elf32-ppc.c revision 1.5 1 1.1 christos /* PowerPC-specific support for 32-bit ELF
2 1.3 christos Copyright (C) 1994-2015 Free Software Foundation, Inc.
3 1.1 christos Written by Ian Lance Taylor, Cygnus Support.
4 1.1 christos
5 1.1 christos This file is part of BFD, the Binary File Descriptor library.
6 1.1 christos
7 1.1 christos This program is free software; you can redistribute it and/or modify
8 1.1 christos it under the terms of the GNU General Public License as published by
9 1.1 christos the Free Software Foundation; either version 3 of the License, or
10 1.1 christos (at your option) any later version.
11 1.1 christos
12 1.1 christos This program is distributed in the hope that it will be useful,
13 1.1 christos but WITHOUT ANY WARRANTY; without even the implied warranty of
14 1.1 christos MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 1.1 christos GNU General Public License for more details.
16 1.1 christos
17 1.1 christos You should have received a copy of the GNU General Public License
18 1.1 christos along with this program; if not, write to the
19 1.1 christos Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
20 1.1 christos Boston, MA 02110-1301, USA. */
21 1.1 christos
22 1.1 christos
23 1.1 christos /* This file is based on a preliminary PowerPC ELF ABI. The
24 1.1 christos information may not match the final PowerPC ELF ABI. It includes
25 1.1 christos suggestions from the in-progress Embedded PowerPC ABI, and that
26 1.1 christos information may also not match. */
27 1.1 christos
28 1.1 christos #include "sysdep.h"
29 1.1 christos #include <stdarg.h>
30 1.1 christos #include "bfd.h"
31 1.1 christos #include "bfdlink.h"
32 1.1 christos #include "libbfd.h"
33 1.1 christos #include "elf-bfd.h"
34 1.1 christos #include "elf/ppc.h"
35 1.1 christos #include "elf32-ppc.h"
36 1.1 christos #include "elf-vxworks.h"
37 1.1 christos #include "dwarf2.h"
38 1.1 christos #include "elf-linux-psinfo.h"
39 1.1 christos
40 1.1 christos typedef enum split16_format_type
41 1.1 christos {
42 1.1 christos split16a_type = 0,
43 1.1 christos split16d_type
44 1.1 christos }
45 1.1 christos split16_format_type;
46 1.1 christos
47 1.1 christos /* RELA relocations are used here. */
48 1.1 christos
49 1.1 christos static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
50 1.1 christos (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
51 1.1 christos static bfd_reloc_status_type ppc_elf_unhandled_reloc
52 1.1 christos (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
53 1.1 christos
54 1.1 christos /* Branch prediction bit for branch taken relocs. */
55 1.1 christos #define BRANCH_PREDICT_BIT 0x200000
56 1.1 christos /* Mask to set RA in memory instructions. */
57 1.1 christos #define RA_REGISTER_MASK 0x001f0000
58 1.1 christos /* Value to shift register by to insert RA. */
59 1.1 christos #define RA_REGISTER_SHIFT 16
60 1.1 christos
61 1.1 christos /* The name of the dynamic interpreter. This is put in the .interp
62 1.1 christos section. */
63 1.1 christos #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
64 1.1 christos
65 1.1 christos /* For old-style PLT. */
66 1.1 christos /* The number of single-slot PLT entries (the rest use two slots). */
67 1.1 christos #define PLT_NUM_SINGLE_ENTRIES 8192
68 1.1 christos
69 1.1 christos /* For new-style .glink and .plt. */
70 1.1 christos #define GLINK_PLTRESOLVE 16*4
71 1.1 christos #define GLINK_ENTRY_SIZE 4*4
72 1.1 christos #define TLS_GET_ADDR_GLINK_SIZE 12*4
73 1.1 christos
74 1.1 christos /* VxWorks uses its own plt layout, filled in by the static linker. */
75 1.1 christos
76 1.1 christos /* The standard VxWorks PLT entry. */
77 1.1 christos #define VXWORKS_PLT_ENTRY_SIZE 32
78 1.1 christos static const bfd_vma ppc_elf_vxworks_plt_entry
79 1.1 christos [VXWORKS_PLT_ENTRY_SIZE / 4] =
80 1.1 christos {
81 1.1 christos 0x3d800000, /* lis r12,0 */
82 1.1 christos 0x818c0000, /* lwz r12,0(r12) */
83 1.1 christos 0x7d8903a6, /* mtctr r12 */
84 1.1 christos 0x4e800420, /* bctr */
85 1.1 christos 0x39600000, /* li r11,0 */
86 1.1 christos 0x48000000, /* b 14 <.PLT0resolve+0x4> */
87 1.1 christos 0x60000000, /* nop */
88 1.1 christos 0x60000000, /* nop */
89 1.1 christos };
90 1.1 christos static const bfd_vma ppc_elf_vxworks_pic_plt_entry
91 1.1 christos [VXWORKS_PLT_ENTRY_SIZE / 4] =
92 1.1 christos {
93 1.1 christos 0x3d9e0000, /* addis r12,r30,0 */
94 1.1 christos 0x818c0000, /* lwz r12,0(r12) */
95 1.1 christos 0x7d8903a6, /* mtctr r12 */
96 1.1 christos 0x4e800420, /* bctr */
97 1.1 christos 0x39600000, /* li r11,0 */
98 1.1 christos 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
99 1.1 christos 0x60000000, /* nop */
100 1.1 christos 0x60000000, /* nop */
101 1.1 christos };
102 1.1 christos
103 1.1 christos /* The initial VxWorks PLT entry. */
104 1.1 christos #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
105 1.1 christos static const bfd_vma ppc_elf_vxworks_plt0_entry
106 1.1 christos [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
107 1.1 christos {
108 1.1 christos 0x3d800000, /* lis r12,0 */
109 1.1 christos 0x398c0000, /* addi r12,r12,0 */
110 1.1 christos 0x800c0008, /* lwz r0,8(r12) */
111 1.1 christos 0x7c0903a6, /* mtctr r0 */
112 1.1 christos 0x818c0004, /* lwz r12,4(r12) */
113 1.1 christos 0x4e800420, /* bctr */
114 1.1 christos 0x60000000, /* nop */
115 1.1 christos 0x60000000, /* nop */
116 1.1 christos };
117 1.1 christos static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
118 1.1 christos [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
119 1.1 christos {
120 1.1 christos 0x819e0008, /* lwz r12,8(r30) */
121 1.1 christos 0x7d8903a6, /* mtctr r12 */
122 1.1 christos 0x819e0004, /* lwz r12,4(r30) */
123 1.1 christos 0x4e800420, /* bctr */
124 1.1 christos 0x60000000, /* nop */
125 1.1 christos 0x60000000, /* nop */
126 1.1 christos 0x60000000, /* nop */
127 1.1 christos 0x60000000, /* nop */
128 1.1 christos };
129 1.1 christos
130 1.1 christos /* For executables, we have some additional relocations in
131 1.1 christos .rela.plt.unloaded, for the kernel loader. */
132 1.1 christos
133 1.1 christos /* The number of non-JMP_SLOT relocations per PLT0 slot. */
134 1.1 christos #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
135 1.1 christos /* The number of relocations in the PLTResolve slot. */
136 1.1 christos #define VXWORKS_PLTRESOLVE_RELOCS 2
137 1.1 christos /* The number of relocations in the PLTResolve slot when when creating
138 1.1 christos a shared library. */
139 1.1 christos #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
140 1.1 christos
141 1.1 christos /* Some instructions. */
142 1.1 christos #define ADDIS_11_11 0x3d6b0000
143 1.1 christos #define ADDIS_11_30 0x3d7e0000
144 1.1 christos #define ADDIS_12_12 0x3d8c0000
145 1.1 christos #define ADDI_11_11 0x396b0000
146 1.1 christos #define ADD_0_11_11 0x7c0b5a14
147 1.1 christos #define ADD_3_12_2 0x7c6c1214
148 1.1 christos #define ADD_11_0_11 0x7d605a14
149 1.1 christos #define B 0x48000000
150 1.3 christos #define BA 0x48000002
151 1.1 christos #define BCL_20_31 0x429f0005
152 1.1 christos #define BCTR 0x4e800420
153 1.1 christos #define BEQLR 0x4d820020
154 1.1 christos #define CMPWI_11_0 0x2c0b0000
155 1.1 christos #define LIS_11 0x3d600000
156 1.1 christos #define LIS_12 0x3d800000
157 1.1 christos #define LWZU_0_12 0x840c0000
158 1.1 christos #define LWZ_0_12 0x800c0000
159 1.1 christos #define LWZ_11_3 0x81630000
160 1.1 christos #define LWZ_11_11 0x816b0000
161 1.1 christos #define LWZ_11_30 0x817e0000
162 1.1 christos #define LWZ_12_3 0x81830000
163 1.1 christos #define LWZ_12_12 0x818c0000
164 1.1 christos #define MR_0_3 0x7c601b78
165 1.1 christos #define MR_3_0 0x7c030378
166 1.1 christos #define MFLR_0 0x7c0802a6
167 1.1 christos #define MFLR_12 0x7d8802a6
168 1.1 christos #define MTCTR_0 0x7c0903a6
169 1.1 christos #define MTCTR_11 0x7d6903a6
170 1.1 christos #define MTLR_0 0x7c0803a6
171 1.1 christos #define NOP 0x60000000
172 1.1 christos #define SUB_11_11_12 0x7d6c5850
173 1.1 christos
174 1.1 christos /* Offset of tp and dtp pointers from start of TLS block. */
175 1.1 christos #define TP_OFFSET 0x7000
176 1.1 christos #define DTP_OFFSET 0x8000
177 1.1 christos
178 1.1 christos /* The value of a defined global symbol. */
179 1.1 christos #define SYM_VAL(SYM) \
180 1.1 christos ((SYM)->root.u.def.section->output_section->vma \
181 1.1 christos + (SYM)->root.u.def.section->output_offset \
182 1.1 christos + (SYM)->root.u.def.value)
183 1.1 christos
184 1.1 christos static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
186 1.1 christos
187 1.1 christos static reloc_howto_type ppc_elf_howto_raw[] = {
188 1.1 christos /* This reloc does nothing. */
189 1.1 christos HOWTO (R_PPC_NONE, /* type */
190 1.5 christos 0, /* rightshift */
191 1.5 christos 3, /* size (0 = byte, 1 = short, 2 = long) */
192 1.1 christos 0, /* bitsize */
193 1.1 christos FALSE, /* pc_relative */
194 1.3 christos 0, /* bitpos */
195 1.1 christos complain_overflow_dont, /* complain_on_overflow */
196 1.1 christos bfd_elf_generic_reloc, /* special_function */
197 1.1 christos "R_PPC_NONE", /* name */
198 1.1 christos FALSE, /* partial_inplace */
199 1.1 christos 0, /* src_mask */
200 1.1 christos 0, /* dst_mask */
201 1.1 christos FALSE), /* pcrel_offset */
202 1.1 christos
203 1.1 christos /* A standard 32 bit relocation. */
204 1.1 christos HOWTO (R_PPC_ADDR32, /* type */
205 1.1 christos 0, /* rightshift */
206 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
207 1.1 christos 32, /* bitsize */
208 1.1 christos FALSE, /* pc_relative */
209 1.3 christos 0, /* bitpos */
210 1.1 christos complain_overflow_dont, /* complain_on_overflow */
211 1.1 christos bfd_elf_generic_reloc, /* special_function */
212 1.1 christos "R_PPC_ADDR32", /* name */
213 1.1 christos FALSE, /* partial_inplace */
214 1.1 christos 0, /* src_mask */
215 1.1 christos 0xffffffff, /* dst_mask */
216 1.1 christos FALSE), /* pcrel_offset */
217 1.1 christos
218 1.1 christos /* An absolute 26 bit branch; the lower two bits must be zero.
219 1.1 christos FIXME: we don't check that, we just clear them. */
220 1.1 christos HOWTO (R_PPC_ADDR24, /* type */
221 1.1 christos 0, /* rightshift */
222 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
223 1.1 christos 26, /* bitsize */
224 1.1 christos FALSE, /* pc_relative */
225 1.3 christos 0, /* bitpos */
226 1.1 christos complain_overflow_signed, /* complain_on_overflow */
227 1.1 christos bfd_elf_generic_reloc, /* special_function */
228 1.1 christos "R_PPC_ADDR24", /* name */
229 1.1 christos FALSE, /* partial_inplace */
230 1.1 christos 0, /* src_mask */
231 1.1 christos 0x3fffffc, /* dst_mask */
232 1.1 christos FALSE), /* pcrel_offset */
233 1.1 christos
234 1.1 christos /* A standard 16 bit relocation. */
235 1.1 christos HOWTO (R_PPC_ADDR16, /* type */
236 1.1 christos 0, /* rightshift */
237 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
238 1.1 christos 16, /* bitsize */
239 1.1 christos FALSE, /* pc_relative */
240 1.1 christos 0, /* bitpos */
241 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
242 1.1 christos bfd_elf_generic_reloc, /* special_function */
243 1.1 christos "R_PPC_ADDR16", /* name */
244 1.1 christos FALSE, /* partial_inplace */
245 1.1 christos 0, /* src_mask */
246 1.1 christos 0xffff, /* dst_mask */
247 1.1 christos FALSE), /* pcrel_offset */
248 1.1 christos
249 1.1 christos /* A 16 bit relocation without overflow. */
250 1.1 christos HOWTO (R_PPC_ADDR16_LO, /* type */
251 1.1 christos 0, /* rightshift */
252 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
253 1.1 christos 16, /* bitsize */
254 1.1 christos FALSE, /* pc_relative */
255 1.1 christos 0, /* bitpos */
256 1.1 christos complain_overflow_dont,/* complain_on_overflow */
257 1.1 christos bfd_elf_generic_reloc, /* special_function */
258 1.1 christos "R_PPC_ADDR16_LO", /* name */
259 1.1 christos FALSE, /* partial_inplace */
260 1.1 christos 0, /* src_mask */
261 1.1 christos 0xffff, /* dst_mask */
262 1.1 christos FALSE), /* pcrel_offset */
263 1.1 christos
264 1.1 christos /* The high order 16 bits of an address. */
265 1.1 christos HOWTO (R_PPC_ADDR16_HI, /* type */
266 1.1 christos 16, /* rightshift */
267 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
268 1.1 christos 16, /* bitsize */
269 1.1 christos FALSE, /* pc_relative */
270 1.1 christos 0, /* bitpos */
271 1.1 christos complain_overflow_dont, /* complain_on_overflow */
272 1.1 christos bfd_elf_generic_reloc, /* special_function */
273 1.1 christos "R_PPC_ADDR16_HI", /* name */
274 1.1 christos FALSE, /* partial_inplace */
275 1.1 christos 0, /* src_mask */
276 1.1 christos 0xffff, /* dst_mask */
277 1.1 christos FALSE), /* pcrel_offset */
278 1.1 christos
279 1.1 christos /* The high order 16 bits of an address, plus 1 if the contents of
280 1.1 christos the low 16 bits, treated as a signed number, is negative. */
281 1.1 christos HOWTO (R_PPC_ADDR16_HA, /* type */
282 1.1 christos 16, /* rightshift */
283 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
284 1.1 christos 16, /* bitsize */
285 1.1 christos FALSE, /* pc_relative */
286 1.1 christos 0, /* bitpos */
287 1.1 christos complain_overflow_dont, /* complain_on_overflow */
288 1.1 christos ppc_elf_addr16_ha_reloc, /* special_function */
289 1.1 christos "R_PPC_ADDR16_HA", /* name */
290 1.1 christos FALSE, /* partial_inplace */
291 1.1 christos 0, /* src_mask */
292 1.1 christos 0xffff, /* dst_mask */
293 1.1 christos FALSE), /* pcrel_offset */
294 1.1 christos
295 1.1 christos /* An absolute 16 bit branch; the lower two bits must be zero.
296 1.1 christos FIXME: we don't check that, we just clear them. */
297 1.1 christos HOWTO (R_PPC_ADDR14, /* type */
298 1.1 christos 0, /* rightshift */
299 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
300 1.1 christos 16, /* bitsize */
301 1.1 christos FALSE, /* pc_relative */
302 1.3 christos 0, /* bitpos */
303 1.1 christos complain_overflow_signed, /* complain_on_overflow */
304 1.1 christos bfd_elf_generic_reloc, /* special_function */
305 1.1 christos "R_PPC_ADDR14", /* name */
306 1.1 christos FALSE, /* partial_inplace */
307 1.1 christos 0, /* src_mask */
308 1.1 christos 0xfffc, /* dst_mask */
309 1.1 christos FALSE), /* pcrel_offset */
310 1.1 christos
311 1.1 christos /* An absolute 16 bit branch, for which bit 10 should be set to
312 1.1 christos indicate that the branch is expected to be taken. The lower two
313 1.1 christos bits must be zero. */
314 1.1 christos HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
315 1.1 christos 0, /* rightshift */
316 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
317 1.1 christos 16, /* bitsize */
318 1.1 christos FALSE, /* pc_relative */
319 1.3 christos 0, /* bitpos */
320 1.1 christos complain_overflow_signed, /* complain_on_overflow */
321 1.1 christos bfd_elf_generic_reloc, /* special_function */
322 1.1 christos "R_PPC_ADDR14_BRTAKEN",/* name */
323 1.1 christos FALSE, /* partial_inplace */
324 1.1 christos 0, /* src_mask */
325 1.1 christos 0xfffc, /* dst_mask */
326 1.1 christos FALSE), /* pcrel_offset */
327 1.1 christos
328 1.1 christos /* An absolute 16 bit branch, for which bit 10 should be set to
329 1.1 christos indicate that the branch is not expected to be taken. The lower
330 1.1 christos two bits must be zero. */
331 1.1 christos HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
332 1.1 christos 0, /* rightshift */
333 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
334 1.1 christos 16, /* bitsize */
335 1.1 christos FALSE, /* pc_relative */
336 1.3 christos 0, /* bitpos */
337 1.1 christos complain_overflow_signed, /* complain_on_overflow */
338 1.1 christos bfd_elf_generic_reloc, /* special_function */
339 1.1 christos "R_PPC_ADDR14_BRNTAKEN",/* name */
340 1.1 christos FALSE, /* partial_inplace */
341 1.1 christos 0, /* src_mask */
342 1.1 christos 0xfffc, /* dst_mask */
343 1.1 christos FALSE), /* pcrel_offset */
344 1.1 christos
345 1.1 christos /* A relative 26 bit branch; the lower two bits must be zero. */
346 1.1 christos HOWTO (R_PPC_REL24, /* type */
347 1.1 christos 0, /* rightshift */
348 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
349 1.1 christos 26, /* bitsize */
350 1.1 christos TRUE, /* pc_relative */
351 1.1 christos 0, /* bitpos */
352 1.1 christos complain_overflow_signed, /* complain_on_overflow */
353 1.1 christos bfd_elf_generic_reloc, /* special_function */
354 1.1 christos "R_PPC_REL24", /* name */
355 1.1 christos FALSE, /* partial_inplace */
356 1.1 christos 0, /* src_mask */
357 1.1 christos 0x3fffffc, /* dst_mask */
358 1.1 christos TRUE), /* pcrel_offset */
359 1.1 christos
360 1.1 christos /* A relative 16 bit branch; the lower two bits must be zero. */
361 1.1 christos HOWTO (R_PPC_REL14, /* type */
362 1.1 christos 0, /* rightshift */
363 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
364 1.1 christos 16, /* bitsize */
365 1.1 christos TRUE, /* pc_relative */
366 1.1 christos 0, /* bitpos */
367 1.1 christos complain_overflow_signed, /* complain_on_overflow */
368 1.1 christos bfd_elf_generic_reloc, /* special_function */
369 1.1 christos "R_PPC_REL14", /* name */
370 1.1 christos FALSE, /* partial_inplace */
371 1.1 christos 0, /* src_mask */
372 1.1 christos 0xfffc, /* dst_mask */
373 1.1 christos TRUE), /* pcrel_offset */
374 1.1 christos
375 1.1 christos /* A relative 16 bit branch. Bit 10 should be set to indicate that
376 1.1 christos the branch is expected to be taken. The lower two bits must be
377 1.1 christos zero. */
378 1.1 christos HOWTO (R_PPC_REL14_BRTAKEN, /* type */
379 1.1 christos 0, /* rightshift */
380 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
381 1.1 christos 16, /* bitsize */
382 1.1 christos TRUE, /* pc_relative */
383 1.1 christos 0, /* bitpos */
384 1.1 christos complain_overflow_signed, /* complain_on_overflow */
385 1.1 christos bfd_elf_generic_reloc, /* special_function */
386 1.1 christos "R_PPC_REL14_BRTAKEN", /* name */
387 1.1 christos FALSE, /* partial_inplace */
388 1.1 christos 0, /* src_mask */
389 1.1 christos 0xfffc, /* dst_mask */
390 1.1 christos TRUE), /* pcrel_offset */
391 1.1 christos
392 1.1 christos /* A relative 16 bit branch. Bit 10 should be set to indicate that
393 1.1 christos the branch is not expected to be taken. The lower two bits must
394 1.1 christos be zero. */
395 1.1 christos HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
396 1.1 christos 0, /* rightshift */
397 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
398 1.1 christos 16, /* bitsize */
399 1.1 christos TRUE, /* pc_relative */
400 1.1 christos 0, /* bitpos */
401 1.1 christos complain_overflow_signed, /* complain_on_overflow */
402 1.1 christos bfd_elf_generic_reloc, /* special_function */
403 1.1 christos "R_PPC_REL14_BRNTAKEN",/* name */
404 1.1 christos FALSE, /* partial_inplace */
405 1.1 christos 0, /* src_mask */
406 1.1 christos 0xfffc, /* dst_mask */
407 1.1 christos TRUE), /* pcrel_offset */
408 1.1 christos
409 1.1 christos /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
410 1.1 christos symbol. */
411 1.1 christos HOWTO (R_PPC_GOT16, /* type */
412 1.1 christos 0, /* rightshift */
413 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
414 1.1 christos 16, /* bitsize */
415 1.1 christos FALSE, /* pc_relative */
416 1.1 christos 0, /* bitpos */
417 1.1 christos complain_overflow_signed, /* complain_on_overflow */
418 1.1 christos bfd_elf_generic_reloc, /* special_function */
419 1.1 christos "R_PPC_GOT16", /* name */
420 1.1 christos FALSE, /* partial_inplace */
421 1.1 christos 0, /* src_mask */
422 1.1 christos 0xffff, /* dst_mask */
423 1.1 christos FALSE), /* pcrel_offset */
424 1.1 christos
425 1.1 christos /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
426 1.1 christos the symbol. */
427 1.1 christos HOWTO (R_PPC_GOT16_LO, /* type */
428 1.1 christos 0, /* rightshift */
429 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
430 1.1 christos 16, /* bitsize */
431 1.1 christos FALSE, /* pc_relative */
432 1.1 christos 0, /* bitpos */
433 1.1 christos complain_overflow_dont, /* complain_on_overflow */
434 1.1 christos bfd_elf_generic_reloc, /* special_function */
435 1.1 christos "R_PPC_GOT16_LO", /* name */
436 1.1 christos FALSE, /* partial_inplace */
437 1.1 christos 0, /* src_mask */
438 1.1 christos 0xffff, /* dst_mask */
439 1.1 christos FALSE), /* pcrel_offset */
440 1.1 christos
441 1.1 christos /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
442 1.1 christos the symbol. */
443 1.1 christos HOWTO (R_PPC_GOT16_HI, /* type */
444 1.1 christos 16, /* rightshift */
445 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
446 1.1 christos 16, /* bitsize */
447 1.1 christos FALSE, /* pc_relative */
448 1.3 christos 0, /* bitpos */
449 1.1 christos complain_overflow_dont, /* complain_on_overflow */
450 1.1 christos bfd_elf_generic_reloc, /* special_function */
451 1.1 christos "R_PPC_GOT16_HI", /* name */
452 1.1 christos FALSE, /* partial_inplace */
453 1.1 christos 0, /* src_mask */
454 1.1 christos 0xffff, /* dst_mask */
455 1.1 christos FALSE), /* pcrel_offset */
456 1.1 christos
457 1.1 christos /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
458 1.1 christos the symbol. */
459 1.1 christos HOWTO (R_PPC_GOT16_HA, /* type */
460 1.1 christos 16, /* rightshift */
461 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
462 1.1 christos 16, /* bitsize */
463 1.1 christos FALSE, /* pc_relative */
464 1.3 christos 0, /* bitpos */
465 1.1 christos complain_overflow_dont, /* complain_on_overflow */
466 1.1 christos ppc_elf_addr16_ha_reloc, /* special_function */
467 1.1 christos "R_PPC_GOT16_HA", /* name */
468 1.1 christos FALSE, /* partial_inplace */
469 1.1 christos 0, /* src_mask */
470 1.1 christos 0xffff, /* dst_mask */
471 1.1 christos FALSE), /* pcrel_offset */
472 1.1 christos
473 1.1 christos /* Like R_PPC_REL24, but referring to the procedure linkage table
474 1.1 christos entry for the symbol. */
475 1.1 christos HOWTO (R_PPC_PLTREL24, /* type */
476 1.1 christos 0, /* rightshift */
477 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
478 1.1 christos 26, /* bitsize */
479 1.1 christos TRUE, /* pc_relative */
480 1.1 christos 0, /* bitpos */
481 1.1 christos complain_overflow_signed, /* complain_on_overflow */
482 1.1 christos bfd_elf_generic_reloc, /* special_function */
483 1.1 christos "R_PPC_PLTREL24", /* name */
484 1.1 christos FALSE, /* partial_inplace */
485 1.1 christos 0, /* src_mask */
486 1.1 christos 0x3fffffc, /* dst_mask */
487 1.1 christos TRUE), /* pcrel_offset */
488 1.1 christos
489 1.1 christos /* This is used only by the dynamic linker. The symbol should exist
490 1.1 christos both in the object being run and in some shared library. The
491 1.1 christos dynamic linker copies the data addressed by the symbol from the
492 1.1 christos shared library into the object, because the object being
493 1.1 christos run has to have the data at some particular address. */
494 1.1 christos HOWTO (R_PPC_COPY, /* type */
495 1.1 christos 0, /* rightshift */
496 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
497 1.1 christos 32, /* bitsize */
498 1.1 christos FALSE, /* pc_relative */
499 1.3 christos 0, /* bitpos */
500 1.1 christos complain_overflow_dont, /* complain_on_overflow */
501 1.1 christos bfd_elf_generic_reloc, /* special_function */
502 1.1 christos "R_PPC_COPY", /* name */
503 1.1 christos FALSE, /* partial_inplace */
504 1.1 christos 0, /* src_mask */
505 1.1 christos 0, /* dst_mask */
506 1.1 christos FALSE), /* pcrel_offset */
507 1.1 christos
508 1.1 christos /* Like R_PPC_ADDR32, but used when setting global offset table
509 1.1 christos entries. */
510 1.1 christos HOWTO (R_PPC_GLOB_DAT, /* type */
511 1.1 christos 0, /* rightshift */
512 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
513 1.1 christos 32, /* bitsize */
514 1.1 christos FALSE, /* pc_relative */
515 1.3 christos 0, /* bitpos */
516 1.1 christos complain_overflow_dont, /* complain_on_overflow */
517 1.1 christos bfd_elf_generic_reloc, /* special_function */
518 1.1 christos "R_PPC_GLOB_DAT", /* name */
519 1.1 christos FALSE, /* partial_inplace */
520 1.1 christos 0, /* src_mask */
521 1.1 christos 0xffffffff, /* dst_mask */
522 1.1 christos FALSE), /* pcrel_offset */
523 1.1 christos
524 1.1 christos /* Marks a procedure linkage table entry for a symbol. */
525 1.1 christos HOWTO (R_PPC_JMP_SLOT, /* type */
526 1.1 christos 0, /* rightshift */
527 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
528 1.1 christos 32, /* bitsize */
529 1.1 christos FALSE, /* pc_relative */
530 1.3 christos 0, /* bitpos */
531 1.1 christos complain_overflow_dont, /* complain_on_overflow */
532 1.1 christos bfd_elf_generic_reloc, /* special_function */
533 1.1 christos "R_PPC_JMP_SLOT", /* name */
534 1.1 christos FALSE, /* partial_inplace */
535 1.1 christos 0, /* src_mask */
536 1.1 christos 0, /* dst_mask */
537 1.1 christos FALSE), /* pcrel_offset */
538 1.1 christos
539 1.1 christos /* Used only by the dynamic linker. When the object is run, this
540 1.1 christos longword is set to the load address of the object, plus the
541 1.1 christos addend. */
542 1.1 christos HOWTO (R_PPC_RELATIVE, /* type */
543 1.1 christos 0, /* rightshift */
544 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
545 1.1 christos 32, /* bitsize */
546 1.1 christos FALSE, /* pc_relative */
547 1.3 christos 0, /* bitpos */
548 1.1 christos complain_overflow_dont, /* complain_on_overflow */
549 1.1 christos bfd_elf_generic_reloc, /* special_function */
550 1.1 christos "R_PPC_RELATIVE", /* name */
551 1.1 christos FALSE, /* partial_inplace */
552 1.1 christos 0, /* src_mask */
553 1.1 christos 0xffffffff, /* dst_mask */
554 1.1 christos FALSE), /* pcrel_offset */
555 1.1 christos
556 1.1 christos /* Like R_PPC_REL24, but uses the value of the symbol within the
557 1.1 christos object rather than the final value. Normally used for
558 1.1 christos _GLOBAL_OFFSET_TABLE_. */
559 1.1 christos HOWTO (R_PPC_LOCAL24PC, /* type */
560 1.1 christos 0, /* rightshift */
561 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
562 1.1 christos 26, /* bitsize */
563 1.1 christos TRUE, /* pc_relative */
564 1.1 christos 0, /* bitpos */
565 1.1 christos complain_overflow_signed, /* complain_on_overflow */
566 1.1 christos bfd_elf_generic_reloc, /* special_function */
567 1.1 christos "R_PPC_LOCAL24PC", /* name */
568 1.1 christos FALSE, /* partial_inplace */
569 1.1 christos 0, /* src_mask */
570 1.1 christos 0x3fffffc, /* dst_mask */
571 1.1 christos TRUE), /* pcrel_offset */
572 1.1 christos
573 1.1 christos /* Like R_PPC_ADDR32, but may be unaligned. */
574 1.1 christos HOWTO (R_PPC_UADDR32, /* type */
575 1.1 christos 0, /* rightshift */
576 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
577 1.1 christos 32, /* bitsize */
578 1.1 christos FALSE, /* pc_relative */
579 1.3 christos 0, /* bitpos */
580 1.1 christos complain_overflow_dont, /* complain_on_overflow */
581 1.1 christos bfd_elf_generic_reloc, /* special_function */
582 1.1 christos "R_PPC_UADDR32", /* name */
583 1.1 christos FALSE, /* partial_inplace */
584 1.1 christos 0, /* src_mask */
585 1.1 christos 0xffffffff, /* dst_mask */
586 1.1 christos FALSE), /* pcrel_offset */
587 1.1 christos
588 1.1 christos /* Like R_PPC_ADDR16, but may be unaligned. */
589 1.1 christos HOWTO (R_PPC_UADDR16, /* type */
590 1.1 christos 0, /* rightshift */
591 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
592 1.1 christos 16, /* bitsize */
593 1.1 christos FALSE, /* pc_relative */
594 1.1 christos 0, /* bitpos */
595 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
596 1.1 christos bfd_elf_generic_reloc, /* special_function */
597 1.1 christos "R_PPC_UADDR16", /* name */
598 1.1 christos FALSE, /* partial_inplace */
599 1.1 christos 0, /* src_mask */
600 1.1 christos 0xffff, /* dst_mask */
601 1.1 christos FALSE), /* pcrel_offset */
602 1.1 christos
603 1.1 christos /* 32-bit PC relative */
604 1.1 christos HOWTO (R_PPC_REL32, /* type */
605 1.1 christos 0, /* rightshift */
606 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
607 1.1 christos 32, /* bitsize */
608 1.1 christos TRUE, /* pc_relative */
609 1.3 christos 0, /* bitpos */
610 1.1 christos complain_overflow_dont, /* complain_on_overflow */
611 1.1 christos bfd_elf_generic_reloc, /* special_function */
612 1.1 christos "R_PPC_REL32", /* name */
613 1.1 christos FALSE, /* partial_inplace */
614 1.1 christos 0, /* src_mask */
615 1.1 christos 0xffffffff, /* dst_mask */
616 1.1 christos TRUE), /* pcrel_offset */
617 1.1 christos
618 1.1 christos /* 32-bit relocation to the symbol's procedure linkage table.
619 1.1 christos FIXME: not supported. */
620 1.1 christos HOWTO (R_PPC_PLT32, /* type */
621 1.1 christos 0, /* rightshift */
622 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
623 1.1 christos 32, /* bitsize */
624 1.1 christos FALSE, /* pc_relative */
625 1.3 christos 0, /* bitpos */
626 1.1 christos complain_overflow_dont, /* complain_on_overflow */
627 1.1 christos bfd_elf_generic_reloc, /* special_function */
628 1.1 christos "R_PPC_PLT32", /* name */
629 1.1 christos FALSE, /* partial_inplace */
630 1.1 christos 0, /* src_mask */
631 1.1 christos 0, /* dst_mask */
632 1.1 christos FALSE), /* pcrel_offset */
633 1.1 christos
634 1.1 christos /* 32-bit PC relative relocation to the symbol's procedure linkage table.
635 1.1 christos FIXME: not supported. */
636 1.1 christos HOWTO (R_PPC_PLTREL32, /* type */
637 1.1 christos 0, /* rightshift */
638 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
639 1.1 christos 32, /* bitsize */
640 1.1 christos TRUE, /* pc_relative */
641 1.3 christos 0, /* bitpos */
642 1.1 christos complain_overflow_dont, /* complain_on_overflow */
643 1.1 christos bfd_elf_generic_reloc, /* special_function */
644 1.1 christos "R_PPC_PLTREL32", /* name */
645 1.1 christos FALSE, /* partial_inplace */
646 1.1 christos 0, /* src_mask */
647 1.1 christos 0, /* dst_mask */
648 1.1 christos TRUE), /* pcrel_offset */
649 1.1 christos
650 1.1 christos /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
651 1.1 christos the symbol. */
652 1.1 christos HOWTO (R_PPC_PLT16_LO, /* type */
653 1.1 christos 0, /* rightshift */
654 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
655 1.1 christos 16, /* bitsize */
656 1.1 christos FALSE, /* pc_relative */
657 1.1 christos 0, /* bitpos */
658 1.1 christos complain_overflow_dont, /* complain_on_overflow */
659 1.1 christos bfd_elf_generic_reloc, /* special_function */
660 1.1 christos "R_PPC_PLT16_LO", /* name */
661 1.1 christos FALSE, /* partial_inplace */
662 1.1 christos 0, /* src_mask */
663 1.1 christos 0xffff, /* dst_mask */
664 1.1 christos FALSE), /* pcrel_offset */
665 1.1 christos
666 1.1 christos /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
667 1.1 christos the symbol. */
668 1.1 christos HOWTO (R_PPC_PLT16_HI, /* type */
669 1.1 christos 16, /* rightshift */
670 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
671 1.1 christos 16, /* bitsize */
672 1.1 christos FALSE, /* pc_relative */
673 1.3 christos 0, /* bitpos */
674 1.1 christos complain_overflow_dont, /* complain_on_overflow */
675 1.1 christos bfd_elf_generic_reloc, /* special_function */
676 1.1 christos "R_PPC_PLT16_HI", /* name */
677 1.1 christos FALSE, /* partial_inplace */
678 1.1 christos 0, /* src_mask */
679 1.1 christos 0xffff, /* dst_mask */
680 1.1 christos FALSE), /* pcrel_offset */
681 1.1 christos
682 1.1 christos /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
683 1.1 christos the symbol. */
684 1.1 christos HOWTO (R_PPC_PLT16_HA, /* type */
685 1.1 christos 16, /* rightshift */
686 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
687 1.1 christos 16, /* bitsize */
688 1.1 christos FALSE, /* pc_relative */
689 1.3 christos 0, /* bitpos */
690 1.1 christos complain_overflow_dont, /* complain_on_overflow */
691 1.1 christos ppc_elf_addr16_ha_reloc, /* special_function */
692 1.1 christos "R_PPC_PLT16_HA", /* name */
693 1.1 christos FALSE, /* partial_inplace */
694 1.1 christos 0, /* src_mask */
695 1.1 christos 0xffff, /* dst_mask */
696 1.1 christos FALSE), /* pcrel_offset */
697 1.1 christos
698 1.1 christos /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
699 1.1 christos small data items. */
700 1.1 christos HOWTO (R_PPC_SDAREL16, /* type */
701 1.1 christos 0, /* rightshift */
702 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
703 1.1 christos 16, /* bitsize */
704 1.1 christos FALSE, /* pc_relative */
705 1.1 christos 0, /* bitpos */
706 1.1 christos complain_overflow_signed, /* complain_on_overflow */
707 1.1 christos bfd_elf_generic_reloc, /* special_function */
708 1.1 christos "R_PPC_SDAREL16", /* name */
709 1.1 christos FALSE, /* partial_inplace */
710 1.1 christos 0, /* src_mask */
711 1.1 christos 0xffff, /* dst_mask */
712 1.1 christos FALSE), /* pcrel_offset */
713 1.1 christos
714 1.1 christos /* 16-bit section relative relocation. */
715 1.1 christos HOWTO (R_PPC_SECTOFF, /* type */
716 1.1 christos 0, /* rightshift */
717 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
718 1.1 christos 16, /* bitsize */
719 1.1 christos FALSE, /* pc_relative */
720 1.3 christos 0, /* bitpos */
721 1.1 christos complain_overflow_signed, /* complain_on_overflow */
722 1.1 christos bfd_elf_generic_reloc, /* special_function */
723 1.1 christos "R_PPC_SECTOFF", /* name */
724 1.1 christos FALSE, /* partial_inplace */
725 1.1 christos 0, /* src_mask */
726 1.1 christos 0xffff, /* dst_mask */
727 1.1 christos FALSE), /* pcrel_offset */
728 1.1 christos
729 1.1 christos /* 16-bit lower half section relative relocation. */
730 1.1 christos HOWTO (R_PPC_SECTOFF_LO, /* type */
731 1.1 christos 0, /* rightshift */
732 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
733 1.1 christos 16, /* bitsize */
734 1.1 christos FALSE, /* pc_relative */
735 1.1 christos 0, /* bitpos */
736 1.1 christos complain_overflow_dont, /* complain_on_overflow */
737 1.1 christos bfd_elf_generic_reloc, /* special_function */
738 1.1 christos "R_PPC_SECTOFF_LO", /* name */
739 1.1 christos FALSE, /* partial_inplace */
740 1.1 christos 0, /* src_mask */
741 1.1 christos 0xffff, /* dst_mask */
742 1.1 christos FALSE), /* pcrel_offset */
743 1.1 christos
744 1.1 christos /* 16-bit upper half section relative relocation. */
745 1.1 christos HOWTO (R_PPC_SECTOFF_HI, /* type */
746 1.1 christos 16, /* rightshift */
747 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
748 1.1 christos 16, /* bitsize */
749 1.1 christos FALSE, /* pc_relative */
750 1.3 christos 0, /* bitpos */
751 1.1 christos complain_overflow_dont, /* complain_on_overflow */
752 1.1 christos bfd_elf_generic_reloc, /* special_function */
753 1.1 christos "R_PPC_SECTOFF_HI", /* name */
754 1.1 christos FALSE, /* partial_inplace */
755 1.1 christos 0, /* src_mask */
756 1.1 christos 0xffff, /* dst_mask */
757 1.1 christos FALSE), /* pcrel_offset */
758 1.1 christos
759 1.1 christos /* 16-bit upper half adjusted section relative relocation. */
760 1.1 christos HOWTO (R_PPC_SECTOFF_HA, /* type */
761 1.1 christos 16, /* rightshift */
762 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
763 1.1 christos 16, /* bitsize */
764 1.1 christos FALSE, /* pc_relative */
765 1.3 christos 0, /* bitpos */
766 1.1 christos complain_overflow_dont, /* complain_on_overflow */
767 1.1 christos ppc_elf_addr16_ha_reloc, /* special_function */
768 1.1 christos "R_PPC_SECTOFF_HA", /* name */
769 1.1 christos FALSE, /* partial_inplace */
770 1.1 christos 0, /* src_mask */
771 1.1 christos 0xffff, /* dst_mask */
772 1.1 christos FALSE), /* pcrel_offset */
773 1.1 christos
774 1.1 christos /* Marker relocs for TLS. */
775 1.1 christos HOWTO (R_PPC_TLS,
776 1.1 christos 0, /* rightshift */
777 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
778 1.1 christos 32, /* bitsize */
779 1.1 christos FALSE, /* pc_relative */
780 1.1 christos 0, /* bitpos */
781 1.1 christos complain_overflow_dont, /* complain_on_overflow */
782 1.1 christos bfd_elf_generic_reloc, /* special_function */
783 1.1 christos "R_PPC_TLS", /* name */
784 1.1 christos FALSE, /* partial_inplace */
785 1.1 christos 0, /* src_mask */
786 1.1 christos 0, /* dst_mask */
787 1.1 christos FALSE), /* pcrel_offset */
788 1.1 christos
789 1.1 christos HOWTO (R_PPC_TLSGD,
790 1.1 christos 0, /* rightshift */
791 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
792 1.1 christos 32, /* bitsize */
793 1.1 christos FALSE, /* pc_relative */
794 1.1 christos 0, /* bitpos */
795 1.1 christos complain_overflow_dont, /* complain_on_overflow */
796 1.1 christos bfd_elf_generic_reloc, /* special_function */
797 1.1 christos "R_PPC_TLSGD", /* name */
798 1.1 christos FALSE, /* partial_inplace */
799 1.1 christos 0, /* src_mask */
800 1.1 christos 0, /* dst_mask */
801 1.1 christos FALSE), /* pcrel_offset */
802 1.1 christos
803 1.1 christos HOWTO (R_PPC_TLSLD,
804 1.1 christos 0, /* rightshift */
805 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
806 1.1 christos 32, /* bitsize */
807 1.1 christos FALSE, /* pc_relative */
808 1.1 christos 0, /* bitpos */
809 1.1 christos complain_overflow_dont, /* complain_on_overflow */
810 1.1 christos bfd_elf_generic_reloc, /* special_function */
811 1.1 christos "R_PPC_TLSLD", /* name */
812 1.1 christos FALSE, /* partial_inplace */
813 1.1 christos 0, /* src_mask */
814 1.1 christos 0, /* dst_mask */
815 1.1 christos FALSE), /* pcrel_offset */
816 1.1 christos
817 1.1 christos /* Computes the load module index of the load module that contains the
818 1.1 christos definition of its TLS sym. */
819 1.1 christos HOWTO (R_PPC_DTPMOD32,
820 1.1 christos 0, /* rightshift */
821 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
822 1.1 christos 32, /* bitsize */
823 1.1 christos FALSE, /* pc_relative */
824 1.1 christos 0, /* bitpos */
825 1.1 christos complain_overflow_dont, /* complain_on_overflow */
826 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
827 1.1 christos "R_PPC_DTPMOD32", /* name */
828 1.1 christos FALSE, /* partial_inplace */
829 1.1 christos 0, /* src_mask */
830 1.1 christos 0xffffffff, /* dst_mask */
831 1.1 christos FALSE), /* pcrel_offset */
832 1.1 christos
833 1.1 christos /* Computes a dtv-relative displacement, the difference between the value
834 1.1 christos of sym+add and the base address of the thread-local storage block that
835 1.1 christos contains the definition of sym, minus 0x8000. */
836 1.1 christos HOWTO (R_PPC_DTPREL32,
837 1.1 christos 0, /* rightshift */
838 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
839 1.1 christos 32, /* bitsize */
840 1.1 christos FALSE, /* pc_relative */
841 1.1 christos 0, /* bitpos */
842 1.1 christos complain_overflow_dont, /* complain_on_overflow */
843 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
844 1.1 christos "R_PPC_DTPREL32", /* name */
845 1.1 christos FALSE, /* partial_inplace */
846 1.1 christos 0, /* src_mask */
847 1.1 christos 0xffffffff, /* dst_mask */
848 1.1 christos FALSE), /* pcrel_offset */
849 1.1 christos
850 1.1 christos /* A 16 bit dtprel reloc. */
851 1.1 christos HOWTO (R_PPC_DTPREL16,
852 1.1 christos 0, /* rightshift */
853 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
854 1.1 christos 16, /* bitsize */
855 1.1 christos FALSE, /* pc_relative */
856 1.1 christos 0, /* bitpos */
857 1.1 christos complain_overflow_signed, /* complain_on_overflow */
858 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
859 1.1 christos "R_PPC_DTPREL16", /* name */
860 1.1 christos FALSE, /* partial_inplace */
861 1.1 christos 0, /* src_mask */
862 1.1 christos 0xffff, /* dst_mask */
863 1.1 christos FALSE), /* pcrel_offset */
864 1.1 christos
865 1.1 christos /* Like DTPREL16, but no overflow. */
866 1.1 christos HOWTO (R_PPC_DTPREL16_LO,
867 1.1 christos 0, /* rightshift */
868 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
869 1.1 christos 16, /* bitsize */
870 1.1 christos FALSE, /* pc_relative */
871 1.1 christos 0, /* bitpos */
872 1.1 christos complain_overflow_dont, /* complain_on_overflow */
873 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
874 1.1 christos "R_PPC_DTPREL16_LO", /* name */
875 1.1 christos FALSE, /* partial_inplace */
876 1.1 christos 0, /* src_mask */
877 1.1 christos 0xffff, /* dst_mask */
878 1.1 christos FALSE), /* pcrel_offset */
879 1.1 christos
880 1.1 christos /* Like DTPREL16_LO, but next higher group of 16 bits. */
881 1.1 christos HOWTO (R_PPC_DTPREL16_HI,
882 1.1 christos 16, /* rightshift */
883 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
884 1.1 christos 16, /* bitsize */
885 1.1 christos FALSE, /* pc_relative */
886 1.1 christos 0, /* bitpos */
887 1.1 christos complain_overflow_dont, /* complain_on_overflow */
888 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
889 1.1 christos "R_PPC_DTPREL16_HI", /* name */
890 1.1 christos FALSE, /* partial_inplace */
891 1.1 christos 0, /* src_mask */
892 1.1 christos 0xffff, /* dst_mask */
893 1.1 christos FALSE), /* pcrel_offset */
894 1.1 christos
895 1.1 christos /* Like DTPREL16_HI, but adjust for low 16 bits. */
896 1.1 christos HOWTO (R_PPC_DTPREL16_HA,
897 1.1 christos 16, /* rightshift */
898 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
899 1.1 christos 16, /* bitsize */
900 1.1 christos FALSE, /* pc_relative */
901 1.1 christos 0, /* bitpos */
902 1.1 christos complain_overflow_dont, /* complain_on_overflow */
903 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
904 1.1 christos "R_PPC_DTPREL16_HA", /* name */
905 1.1 christos FALSE, /* partial_inplace */
906 1.1 christos 0, /* src_mask */
907 1.1 christos 0xffff, /* dst_mask */
908 1.1 christos FALSE), /* pcrel_offset */
909 1.1 christos
910 1.1 christos /* Computes a tp-relative displacement, the difference between the value of
911 1.1 christos sym+add and the value of the thread pointer (r13). */
912 1.1 christos HOWTO (R_PPC_TPREL32,
913 1.1 christos 0, /* rightshift */
914 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
915 1.1 christos 32, /* bitsize */
916 1.1 christos FALSE, /* pc_relative */
917 1.1 christos 0, /* bitpos */
918 1.1 christos complain_overflow_dont, /* complain_on_overflow */
919 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
920 1.1 christos "R_PPC_TPREL32", /* name */
921 1.1 christos FALSE, /* partial_inplace */
922 1.1 christos 0, /* src_mask */
923 1.1 christos 0xffffffff, /* dst_mask */
924 1.1 christos FALSE), /* pcrel_offset */
925 1.1 christos
926 1.1 christos /* A 16 bit tprel reloc. */
927 1.1 christos HOWTO (R_PPC_TPREL16,
928 1.1 christos 0, /* rightshift */
929 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
930 1.1 christos 16, /* bitsize */
931 1.1 christos FALSE, /* pc_relative */
932 1.1 christos 0, /* bitpos */
933 1.1 christos complain_overflow_signed, /* complain_on_overflow */
934 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
935 1.1 christos "R_PPC_TPREL16", /* name */
936 1.1 christos FALSE, /* partial_inplace */
937 1.1 christos 0, /* src_mask */
938 1.1 christos 0xffff, /* dst_mask */
939 1.1 christos FALSE), /* pcrel_offset */
940 1.1 christos
941 1.1 christos /* Like TPREL16, but no overflow. */
942 1.1 christos HOWTO (R_PPC_TPREL16_LO,
943 1.1 christos 0, /* rightshift */
944 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
945 1.1 christos 16, /* bitsize */
946 1.1 christos FALSE, /* pc_relative */
947 1.1 christos 0, /* bitpos */
948 1.1 christos complain_overflow_dont, /* complain_on_overflow */
949 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
950 1.1 christos "R_PPC_TPREL16_LO", /* name */
951 1.1 christos FALSE, /* partial_inplace */
952 1.1 christos 0, /* src_mask */
953 1.1 christos 0xffff, /* dst_mask */
954 1.1 christos FALSE), /* pcrel_offset */
955 1.1 christos
956 1.1 christos /* Like TPREL16_LO, but next higher group of 16 bits. */
957 1.1 christos HOWTO (R_PPC_TPREL16_HI,
958 1.1 christos 16, /* rightshift */
959 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
960 1.1 christos 16, /* bitsize */
961 1.1 christos FALSE, /* pc_relative */
962 1.1 christos 0, /* bitpos */
963 1.1 christos complain_overflow_dont, /* complain_on_overflow */
964 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
965 1.1 christos "R_PPC_TPREL16_HI", /* name */
966 1.1 christos FALSE, /* partial_inplace */
967 1.1 christos 0, /* src_mask */
968 1.1 christos 0xffff, /* dst_mask */
969 1.1 christos FALSE), /* pcrel_offset */
970 1.1 christos
971 1.1 christos /* Like TPREL16_HI, but adjust for low 16 bits. */
972 1.1 christos HOWTO (R_PPC_TPREL16_HA,
973 1.1 christos 16, /* rightshift */
974 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
975 1.1 christos 16, /* bitsize */
976 1.1 christos FALSE, /* pc_relative */
977 1.1 christos 0, /* bitpos */
978 1.1 christos complain_overflow_dont, /* complain_on_overflow */
979 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
980 1.1 christos "R_PPC_TPREL16_HA", /* name */
981 1.1 christos FALSE, /* partial_inplace */
982 1.1 christos 0, /* src_mask */
983 1.1 christos 0xffff, /* dst_mask */
984 1.1 christos FALSE), /* pcrel_offset */
985 1.1 christos
986 1.1 christos /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
987 1.1 christos with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
988 1.1 christos to the first entry. */
989 1.1 christos HOWTO (R_PPC_GOT_TLSGD16,
990 1.1 christos 0, /* rightshift */
991 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
992 1.1 christos 16, /* bitsize */
993 1.1 christos FALSE, /* pc_relative */
994 1.1 christos 0, /* bitpos */
995 1.1 christos complain_overflow_signed, /* complain_on_overflow */
996 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
997 1.1 christos "R_PPC_GOT_TLSGD16", /* name */
998 1.1 christos FALSE, /* partial_inplace */
999 1.1 christos 0, /* src_mask */
1000 1.1 christos 0xffff, /* dst_mask */
1001 1.1 christos FALSE), /* pcrel_offset */
1002 1.1 christos
1003 1.1 christos /* Like GOT_TLSGD16, but no overflow. */
1004 1.1 christos HOWTO (R_PPC_GOT_TLSGD16_LO,
1005 1.1 christos 0, /* rightshift */
1006 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1007 1.1 christos 16, /* bitsize */
1008 1.1 christos FALSE, /* pc_relative */
1009 1.1 christos 0, /* bitpos */
1010 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1011 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1012 1.1 christos "R_PPC_GOT_TLSGD16_LO", /* name */
1013 1.1 christos FALSE, /* partial_inplace */
1014 1.1 christos 0, /* src_mask */
1015 1.1 christos 0xffff, /* dst_mask */
1016 1.1 christos FALSE), /* pcrel_offset */
1017 1.1 christos
1018 1.1 christos /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1019 1.1 christos HOWTO (R_PPC_GOT_TLSGD16_HI,
1020 1.1 christos 16, /* rightshift */
1021 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1022 1.1 christos 16, /* bitsize */
1023 1.1 christos FALSE, /* pc_relative */
1024 1.1 christos 0, /* bitpos */
1025 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1026 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1027 1.1 christos "R_PPC_GOT_TLSGD16_HI", /* name */
1028 1.1 christos FALSE, /* partial_inplace */
1029 1.1 christos 0, /* src_mask */
1030 1.1 christos 0xffff, /* dst_mask */
1031 1.1 christos FALSE), /* pcrel_offset */
1032 1.1 christos
1033 1.1 christos /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1034 1.1 christos HOWTO (R_PPC_GOT_TLSGD16_HA,
1035 1.1 christos 16, /* rightshift */
1036 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1037 1.1 christos 16, /* bitsize */
1038 1.1 christos FALSE, /* pc_relative */
1039 1.1 christos 0, /* bitpos */
1040 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1041 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1042 1.1 christos "R_PPC_GOT_TLSGD16_HA", /* name */
1043 1.1 christos FALSE, /* partial_inplace */
1044 1.1 christos 0, /* src_mask */
1045 1.1 christos 0xffff, /* dst_mask */
1046 1.1 christos FALSE), /* pcrel_offset */
1047 1.1 christos
1048 1.1 christos /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1049 1.1 christos with values (sym+add)@dtpmod and zero, and computes the offset to the
1050 1.1 christos first entry. */
1051 1.1 christos HOWTO (R_PPC_GOT_TLSLD16,
1052 1.1 christos 0, /* rightshift */
1053 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1054 1.1 christos 16, /* bitsize */
1055 1.1 christos FALSE, /* pc_relative */
1056 1.1 christos 0, /* bitpos */
1057 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1058 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1059 1.1 christos "R_PPC_GOT_TLSLD16", /* name */
1060 1.1 christos FALSE, /* partial_inplace */
1061 1.1 christos 0, /* src_mask */
1062 1.1 christos 0xffff, /* dst_mask */
1063 1.1 christos FALSE), /* pcrel_offset */
1064 1.1 christos
1065 1.1 christos /* Like GOT_TLSLD16, but no overflow. */
1066 1.1 christos HOWTO (R_PPC_GOT_TLSLD16_LO,
1067 1.1 christos 0, /* rightshift */
1068 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1069 1.1 christos 16, /* bitsize */
1070 1.1 christos FALSE, /* pc_relative */
1071 1.1 christos 0, /* bitpos */
1072 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1073 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1074 1.1 christos "R_PPC_GOT_TLSLD16_LO", /* name */
1075 1.1 christos FALSE, /* partial_inplace */
1076 1.1 christos 0, /* src_mask */
1077 1.1 christos 0xffff, /* dst_mask */
1078 1.1 christos FALSE), /* pcrel_offset */
1079 1.1 christos
1080 1.1 christos /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1081 1.1 christos HOWTO (R_PPC_GOT_TLSLD16_HI,
1082 1.1 christos 16, /* rightshift */
1083 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1084 1.1 christos 16, /* bitsize */
1085 1.1 christos FALSE, /* pc_relative */
1086 1.1 christos 0, /* bitpos */
1087 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1088 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1089 1.1 christos "R_PPC_GOT_TLSLD16_HI", /* name */
1090 1.1 christos FALSE, /* partial_inplace */
1091 1.1 christos 0, /* src_mask */
1092 1.1 christos 0xffff, /* dst_mask */
1093 1.1 christos FALSE), /* pcrel_offset */
1094 1.1 christos
1095 1.1 christos /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1096 1.1 christos HOWTO (R_PPC_GOT_TLSLD16_HA,
1097 1.1 christos 16, /* rightshift */
1098 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1099 1.1 christos 16, /* bitsize */
1100 1.1 christos FALSE, /* pc_relative */
1101 1.1 christos 0, /* bitpos */
1102 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1103 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1104 1.1 christos "R_PPC_GOT_TLSLD16_HA", /* name */
1105 1.1 christos FALSE, /* partial_inplace */
1106 1.1 christos 0, /* src_mask */
1107 1.1 christos 0xffff, /* dst_mask */
1108 1.1 christos FALSE), /* pcrel_offset */
1109 1.1 christos
1110 1.1 christos /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1111 1.1 christos the offset to the entry. */
1112 1.1 christos HOWTO (R_PPC_GOT_DTPREL16,
1113 1.1 christos 0, /* rightshift */
1114 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1115 1.1 christos 16, /* bitsize */
1116 1.1 christos FALSE, /* pc_relative */
1117 1.1 christos 0, /* bitpos */
1118 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1119 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1120 1.1 christos "R_PPC_GOT_DTPREL16", /* name */
1121 1.1 christos FALSE, /* partial_inplace */
1122 1.1 christos 0, /* src_mask */
1123 1.1 christos 0xffff, /* dst_mask */
1124 1.1 christos FALSE), /* pcrel_offset */
1125 1.1 christos
1126 1.1 christos /* Like GOT_DTPREL16, but no overflow. */
1127 1.1 christos HOWTO (R_PPC_GOT_DTPREL16_LO,
1128 1.1 christos 0, /* rightshift */
1129 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1130 1.1 christos 16, /* bitsize */
1131 1.1 christos FALSE, /* pc_relative */
1132 1.1 christos 0, /* bitpos */
1133 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1134 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1135 1.1 christos "R_PPC_GOT_DTPREL16_LO", /* name */
1136 1.1 christos FALSE, /* partial_inplace */
1137 1.1 christos 0, /* src_mask */
1138 1.1 christos 0xffff, /* dst_mask */
1139 1.1 christos FALSE), /* pcrel_offset */
1140 1.1 christos
1141 1.1 christos /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1142 1.1 christos HOWTO (R_PPC_GOT_DTPREL16_HI,
1143 1.1 christos 16, /* rightshift */
1144 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1145 1.1 christos 16, /* bitsize */
1146 1.1 christos FALSE, /* pc_relative */
1147 1.1 christos 0, /* bitpos */
1148 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1149 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1150 1.1 christos "R_PPC_GOT_DTPREL16_HI", /* name */
1151 1.1 christos FALSE, /* partial_inplace */
1152 1.1 christos 0, /* src_mask */
1153 1.1 christos 0xffff, /* dst_mask */
1154 1.1 christos FALSE), /* pcrel_offset */
1155 1.1 christos
1156 1.1 christos /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1157 1.1 christos HOWTO (R_PPC_GOT_DTPREL16_HA,
1158 1.1 christos 16, /* rightshift */
1159 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1160 1.1 christos 16, /* bitsize */
1161 1.1 christos FALSE, /* pc_relative */
1162 1.1 christos 0, /* bitpos */
1163 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1164 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1165 1.1 christos "R_PPC_GOT_DTPREL16_HA", /* name */
1166 1.1 christos FALSE, /* partial_inplace */
1167 1.1 christos 0, /* src_mask */
1168 1.1 christos 0xffff, /* dst_mask */
1169 1.1 christos FALSE), /* pcrel_offset */
1170 1.1 christos
1171 1.1 christos /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1172 1.1 christos offset to the entry. */
1173 1.1 christos HOWTO (R_PPC_GOT_TPREL16,
1174 1.1 christos 0, /* rightshift */
1175 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1176 1.1 christos 16, /* bitsize */
1177 1.1 christos FALSE, /* pc_relative */
1178 1.1 christos 0, /* bitpos */
1179 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1180 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1181 1.1 christos "R_PPC_GOT_TPREL16", /* name */
1182 1.1 christos FALSE, /* partial_inplace */
1183 1.1 christos 0, /* src_mask */
1184 1.1 christos 0xffff, /* dst_mask */
1185 1.1 christos FALSE), /* pcrel_offset */
1186 1.1 christos
1187 1.1 christos /* Like GOT_TPREL16, but no overflow. */
1188 1.1 christos HOWTO (R_PPC_GOT_TPREL16_LO,
1189 1.1 christos 0, /* rightshift */
1190 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1191 1.1 christos 16, /* bitsize */
1192 1.1 christos FALSE, /* pc_relative */
1193 1.1 christos 0, /* bitpos */
1194 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1195 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1196 1.1 christos "R_PPC_GOT_TPREL16_LO", /* name */
1197 1.1 christos FALSE, /* partial_inplace */
1198 1.1 christos 0, /* src_mask */
1199 1.1 christos 0xffff, /* dst_mask */
1200 1.1 christos FALSE), /* pcrel_offset */
1201 1.1 christos
1202 1.1 christos /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1203 1.1 christos HOWTO (R_PPC_GOT_TPREL16_HI,
1204 1.1 christos 16, /* rightshift */
1205 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1206 1.1 christos 16, /* bitsize */
1207 1.1 christos FALSE, /* pc_relative */
1208 1.1 christos 0, /* bitpos */
1209 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1210 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1211 1.1 christos "R_PPC_GOT_TPREL16_HI", /* name */
1212 1.1 christos FALSE, /* partial_inplace */
1213 1.1 christos 0, /* src_mask */
1214 1.1 christos 0xffff, /* dst_mask */
1215 1.1 christos FALSE), /* pcrel_offset */
1216 1.1 christos
1217 1.1 christos /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1218 1.1 christos HOWTO (R_PPC_GOT_TPREL16_HA,
1219 1.1 christos 16, /* rightshift */
1220 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1221 1.1 christos 16, /* bitsize */
1222 1.1 christos FALSE, /* pc_relative */
1223 1.1 christos 0, /* bitpos */
1224 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1225 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1226 1.1 christos "R_PPC_GOT_TPREL16_HA", /* name */
1227 1.1 christos FALSE, /* partial_inplace */
1228 1.1 christos 0, /* src_mask */
1229 1.1 christos 0xffff, /* dst_mask */
1230 1.1 christos FALSE), /* pcrel_offset */
1231 1.1 christos
1232 1.1 christos /* The remaining relocs are from the Embedded ELF ABI, and are not
1233 1.1 christos in the SVR4 ELF ABI. */
1234 1.1 christos
1235 1.1 christos /* 32 bit value resulting from the addend minus the symbol. */
1236 1.1 christos HOWTO (R_PPC_EMB_NADDR32, /* type */
1237 1.1 christos 0, /* rightshift */
1238 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1239 1.1 christos 32, /* bitsize */
1240 1.1 christos FALSE, /* pc_relative */
1241 1.3 christos 0, /* bitpos */
1242 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1243 1.1 christos bfd_elf_generic_reloc, /* special_function */
1244 1.1 christos "R_PPC_EMB_NADDR32", /* name */
1245 1.1 christos FALSE, /* partial_inplace */
1246 1.1 christos 0, /* src_mask */
1247 1.1 christos 0xffffffff, /* dst_mask */
1248 1.1 christos FALSE), /* pcrel_offset */
1249 1.1 christos
1250 1.1 christos /* 16 bit value resulting from the addend minus the symbol. */
1251 1.1 christos HOWTO (R_PPC_EMB_NADDR16, /* type */
1252 1.1 christos 0, /* rightshift */
1253 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1254 1.1 christos 16, /* bitsize */
1255 1.1 christos FALSE, /* pc_relative */
1256 1.3 christos 0, /* bitpos */
1257 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1258 1.1 christos bfd_elf_generic_reloc, /* special_function */
1259 1.1 christos "R_PPC_EMB_NADDR16", /* name */
1260 1.1 christos FALSE, /* partial_inplace */
1261 1.1 christos 0, /* src_mask */
1262 1.1 christos 0xffff, /* dst_mask */
1263 1.1 christos FALSE), /* pcrel_offset */
1264 1.1 christos
1265 1.1 christos /* 16 bit value resulting from the addend minus the symbol. */
1266 1.1 christos HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1267 1.1 christos 0, /* rightshift */
1268 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1269 1.1 christos 16, /* bitsize */
1270 1.1 christos FALSE, /* pc_relative */
1271 1.1 christos 0, /* bitpos */
1272 1.1 christos complain_overflow_dont,/* complain_on_overflow */
1273 1.1 christos bfd_elf_generic_reloc, /* special_function */
1274 1.1 christos "R_PPC_EMB_ADDR16_LO", /* name */
1275 1.1 christos FALSE, /* partial_inplace */
1276 1.1 christos 0, /* src_mask */
1277 1.1 christos 0xffff, /* dst_mask */
1278 1.1 christos FALSE), /* pcrel_offset */
1279 1.1 christos
1280 1.1 christos /* The high order 16 bits of the addend minus the symbol. */
1281 1.1 christos HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1282 1.1 christos 16, /* rightshift */
1283 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1284 1.1 christos 16, /* bitsize */
1285 1.1 christos FALSE, /* pc_relative */
1286 1.1 christos 0, /* bitpos */
1287 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1288 1.1 christos bfd_elf_generic_reloc, /* special_function */
1289 1.1 christos "R_PPC_EMB_NADDR16_HI", /* name */
1290 1.1 christos FALSE, /* partial_inplace */
1291 1.1 christos 0, /* src_mask */
1292 1.1 christos 0xffff, /* dst_mask */
1293 1.1 christos FALSE), /* pcrel_offset */
1294 1.1 christos
1295 1.1 christos /* The high order 16 bits of the result of the addend minus the address,
1296 1.1 christos plus 1 if the contents of the low 16 bits, treated as a signed number,
1297 1.1 christos is negative. */
1298 1.1 christos HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1299 1.1 christos 16, /* rightshift */
1300 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1301 1.1 christos 16, /* bitsize */
1302 1.1 christos FALSE, /* pc_relative */
1303 1.1 christos 0, /* bitpos */
1304 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1305 1.1 christos ppc_elf_addr16_ha_reloc, /* special_function */
1306 1.1 christos "R_PPC_EMB_NADDR16_HA", /* name */
1307 1.1 christos FALSE, /* partial_inplace */
1308 1.1 christos 0, /* src_mask */
1309 1.1 christos 0xffff, /* dst_mask */
1310 1.1 christos FALSE), /* pcrel_offset */
1311 1.1 christos
1312 1.1 christos /* 16 bit value resulting from allocating a 4 byte word to hold an
1313 1.1 christos address in the .sdata section, and returning the offset from
1314 1.1 christos _SDA_BASE_ for that relocation. */
1315 1.1 christos HOWTO (R_PPC_EMB_SDAI16, /* type */
1316 1.1 christos 0, /* rightshift */
1317 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1318 1.1 christos 16, /* bitsize */
1319 1.1 christos FALSE, /* pc_relative */
1320 1.1 christos 0, /* bitpos */
1321 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1322 1.1 christos bfd_elf_generic_reloc, /* special_function */
1323 1.1 christos "R_PPC_EMB_SDAI16", /* name */
1324 1.1 christos FALSE, /* partial_inplace */
1325 1.1 christos 0, /* src_mask */
1326 1.1 christos 0xffff, /* dst_mask */
1327 1.1 christos FALSE), /* pcrel_offset */
1328 1.1 christos
1329 1.1 christos /* 16 bit value resulting from allocating a 4 byte word to hold an
1330 1.1 christos address in the .sdata2 section, and returning the offset from
1331 1.1 christos _SDA2_BASE_ for that relocation. */
1332 1.1 christos HOWTO (R_PPC_EMB_SDA2I16, /* type */
1333 1.1 christos 0, /* rightshift */
1334 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1335 1.1 christos 16, /* bitsize */
1336 1.1 christos FALSE, /* pc_relative */
1337 1.1 christos 0, /* bitpos */
1338 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1339 1.1 christos bfd_elf_generic_reloc, /* special_function */
1340 1.1 christos "R_PPC_EMB_SDA2I16", /* name */
1341 1.1 christos FALSE, /* partial_inplace */
1342 1.1 christos 0, /* src_mask */
1343 1.1 christos 0xffff, /* dst_mask */
1344 1.1 christos FALSE), /* pcrel_offset */
1345 1.1 christos
1346 1.1 christos /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1347 1.1 christos small data items. */
1348 1.1 christos HOWTO (R_PPC_EMB_SDA2REL, /* type */
1349 1.1 christos 0, /* rightshift */
1350 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1351 1.1 christos 16, /* bitsize */
1352 1.1 christos FALSE, /* pc_relative */
1353 1.1 christos 0, /* bitpos */
1354 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1355 1.1 christos bfd_elf_generic_reloc, /* special_function */
1356 1.1 christos "R_PPC_EMB_SDA2REL", /* name */
1357 1.1 christos FALSE, /* partial_inplace */
1358 1.1 christos 0, /* src_mask */
1359 1.1 christos 0xffff, /* dst_mask */
1360 1.1 christos FALSE), /* pcrel_offset */
1361 1.1 christos
1362 1.1 christos /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1363 1.1 christos signed offset from the appropriate base, and filling in the register
1364 1.1 christos field with the appropriate register (0, 2, or 13). */
1365 1.1 christos HOWTO (R_PPC_EMB_SDA21, /* type */
1366 1.1 christos 0, /* rightshift */
1367 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1368 1.1 christos 16, /* bitsize */
1369 1.1 christos FALSE, /* pc_relative */
1370 1.1 christos 0, /* bitpos */
1371 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1372 1.1 christos bfd_elf_generic_reloc, /* special_function */
1373 1.1 christos "R_PPC_EMB_SDA21", /* name */
1374 1.1 christos FALSE, /* partial_inplace */
1375 1.1 christos 0, /* src_mask */
1376 1.1 christos 0xffff, /* dst_mask */
1377 1.1 christos FALSE), /* pcrel_offset */
1378 1.1 christos
1379 1.1 christos /* Relocation not handled: R_PPC_EMB_MRKREF */
1380 1.1 christos /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1381 1.1 christos /* Relocation not handled: R_PPC_EMB_RELST_LO */
1382 1.1 christos /* Relocation not handled: R_PPC_EMB_RELST_HI */
1383 1.1 christos /* Relocation not handled: R_PPC_EMB_RELST_HA */
1384 1.1 christos /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1385 1.1 christos
1386 1.1 christos /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1387 1.1 christos in the 16 bit signed offset from the appropriate base, and filling in the
1388 1.1 christos register field with the appropriate register (0, 2, or 13). */
1389 1.1 christos HOWTO (R_PPC_EMB_RELSDA, /* type */
1390 1.1 christos 0, /* rightshift */
1391 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1392 1.1 christos 16, /* bitsize */
1393 1.1 christos FALSE, /* pc_relative */
1394 1.1 christos 0, /* bitpos */
1395 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1396 1.1 christos bfd_elf_generic_reloc, /* special_function */
1397 1.1 christos "R_PPC_EMB_RELSDA", /* name */
1398 1.1 christos FALSE, /* partial_inplace */
1399 1.1 christos 0, /* src_mask */
1400 1.1 christos 0xffff, /* dst_mask */
1401 1.1 christos FALSE), /* pcrel_offset */
1402 1.1 christos
1403 1.1 christos /* A relative 8 bit branch. */
1404 1.1 christos HOWTO (R_PPC_VLE_REL8, /* type */
1405 1.1 christos 1, /* rightshift */
1406 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1407 1.1 christos 8, /* bitsize */
1408 1.1 christos TRUE, /* pc_relative */
1409 1.1 christos 0, /* bitpos */
1410 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1411 1.1 christos bfd_elf_generic_reloc, /* special_function */
1412 1.1 christos "R_PPC_VLE_REL8", /* name */
1413 1.1 christos FALSE, /* partial_inplace */
1414 1.1 christos 0, /* src_mask */
1415 1.1 christos 0xff, /* dst_mask */
1416 1.1 christos TRUE), /* pcrel_offset */
1417 1.1 christos
1418 1.1 christos /* A relative 15 bit branch. */
1419 1.1 christos HOWTO (R_PPC_VLE_REL15, /* type */
1420 1.1 christos 1, /* rightshift */
1421 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1422 1.1 christos 15, /* bitsize */
1423 1.1 christos TRUE, /* pc_relative */
1424 1.1 christos 1, /* bitpos */
1425 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1426 1.1 christos bfd_elf_generic_reloc, /* special_function */
1427 1.1 christos "R_PPC_VLE_REL15", /* name */
1428 1.1 christos FALSE, /* partial_inplace */
1429 1.1 christos 0, /* src_mask */
1430 1.1 christos 0xfe, /* dst_mask */
1431 1.1 christos TRUE), /* pcrel_offset */
1432 1.1 christos
1433 1.1 christos /* A relative 24 bit branch. */
1434 1.1 christos HOWTO (R_PPC_VLE_REL24, /* type */
1435 1.1 christos 1, /* rightshift */
1436 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1437 1.1 christos 24, /* bitsize */
1438 1.1 christos TRUE, /* pc_relative */
1439 1.1 christos 1, /* bitpos */
1440 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1441 1.1 christos bfd_elf_generic_reloc, /* special_function */
1442 1.1 christos "R_PPC_VLE_REL24", /* name */
1443 1.1 christos FALSE, /* partial_inplace */
1444 1.1 christos 0, /* src_mask */
1445 1.1 christos 0x1fffffe, /* dst_mask */
1446 1.1 christos TRUE), /* pcrel_offset */
1447 1.1 christos
1448 1.1 christos /* The 16 LSBS in split16a format. */
1449 1.1 christos HOWTO (R_PPC_VLE_LO16A, /* type */
1450 1.1 christos 0, /* rightshift */
1451 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1452 1.1 christos 16, /* bitsize */
1453 1.1 christos FALSE, /* pc_relative */
1454 1.3 christos 0, /* bitpos */
1455 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1456 1.1 christos bfd_elf_generic_reloc, /* special_function */
1457 1.1 christos "R_PPC_VLE_LO16A", /* name */
1458 1.1 christos FALSE, /* partial_inplace */
1459 1.1 christos 0, /* src_mask */
1460 1.1 christos 0x1f007ff, /* dst_mask */
1461 1.1 christos FALSE), /* pcrel_offset */
1462 1.1 christos
1463 1.1 christos /* The 16 LSBS in split16d format. */
1464 1.1 christos HOWTO (R_PPC_VLE_LO16D, /* type */
1465 1.1 christos 0, /* rightshift */
1466 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1467 1.1 christos 16, /* bitsize */
1468 1.1 christos FALSE, /* pc_relative */
1469 1.3 christos 0, /* bitpos */
1470 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1471 1.1 christos bfd_elf_generic_reloc, /* special_function */
1472 1.1 christos "R_PPC_VLE_LO16D", /* name */
1473 1.1 christos FALSE, /* partial_inplace */
1474 1.1 christos 0, /* src_mask */
1475 1.1 christos 0x1f07ff, /* dst_mask */
1476 1.1 christos FALSE), /* pcrel_offset */
1477 1.1 christos
1478 1.1 christos /* Bits 16-31 split16a format. */
1479 1.3 christos HOWTO (R_PPC_VLE_HI16A, /* type */
1480 1.1 christos 16, /* rightshift */
1481 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1482 1.1 christos 16, /* bitsize */
1483 1.1 christos FALSE, /* pc_relative */
1484 1.3 christos 0, /* bitpos */
1485 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1486 1.1 christos bfd_elf_generic_reloc, /* special_function */
1487 1.1 christos "R_PPC_VLE_HI16A", /* name */
1488 1.1 christos FALSE, /* partial_inplace */
1489 1.1 christos 0, /* src_mask */
1490 1.1 christos 0x1f007ff, /* dst_mask */
1491 1.1 christos FALSE), /* pcrel_offset */
1492 1.1 christos
1493 1.1 christos /* Bits 16-31 split16d format. */
1494 1.3 christos HOWTO (R_PPC_VLE_HI16D, /* type */
1495 1.1 christos 16, /* rightshift */
1496 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1497 1.1 christos 16, /* bitsize */
1498 1.1 christos FALSE, /* pc_relative */
1499 1.3 christos 0, /* bitpos */
1500 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1501 1.1 christos bfd_elf_generic_reloc, /* special_function */
1502 1.1 christos "R_PPC_VLE_HI16D", /* name */
1503 1.1 christos FALSE, /* partial_inplace */
1504 1.1 christos 0, /* src_mask */
1505 1.1 christos 0x1f07ff, /* dst_mask */
1506 1.1 christos FALSE), /* pcrel_offset */
1507 1.1 christos
1508 1.1 christos /* Bits 16-31 (High Adjusted) in split16a format. */
1509 1.3 christos HOWTO (R_PPC_VLE_HA16A, /* type */
1510 1.1 christos 16, /* rightshift */
1511 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1512 1.1 christos 16, /* bitsize */
1513 1.1 christos FALSE, /* pc_relative */
1514 1.3 christos 0, /* bitpos */
1515 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1516 1.1 christos bfd_elf_generic_reloc, /* special_function */
1517 1.1 christos "R_PPC_VLE_HA16A", /* name */
1518 1.1 christos FALSE, /* partial_inplace */
1519 1.1 christos 0, /* src_mask */
1520 1.1 christos 0x1f007ff, /* dst_mask */
1521 1.1 christos FALSE), /* pcrel_offset */
1522 1.1 christos
1523 1.1 christos /* Bits 16-31 (High Adjusted) in split16d format. */
1524 1.3 christos HOWTO (R_PPC_VLE_HA16D, /* type */
1525 1.1 christos 16, /* rightshift */
1526 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1527 1.1 christos 16, /* bitsize */
1528 1.1 christos FALSE, /* pc_relative */
1529 1.3 christos 0, /* bitpos */
1530 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1531 1.1 christos bfd_elf_generic_reloc, /* special_function */
1532 1.1 christos "R_PPC_VLE_HA16D", /* name */
1533 1.1 christos FALSE, /* partial_inplace */
1534 1.1 christos 0, /* src_mask */
1535 1.1 christos 0x1f07ff, /* dst_mask */
1536 1.1 christos FALSE), /* pcrel_offset */
1537 1.3 christos
1538 1.3 christos /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1539 1.3 christos instructions. If the register base is 0 then the linker changes
1540 1.3 christos the e_add16i to an e_li instruction. */
1541 1.1 christos HOWTO (R_PPC_VLE_SDA21, /* type */
1542 1.1 christos 0, /* rightshift */
1543 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1544 1.1 christos 16, /* bitsize */
1545 1.1 christos FALSE, /* pc_relative */
1546 1.3 christos 0, /* bitpos */
1547 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1548 1.1 christos bfd_elf_generic_reloc, /* special_function */
1549 1.1 christos "R_PPC_VLE_SDA21", /* name */
1550 1.1 christos FALSE, /* partial_inplace */
1551 1.1 christos 0, /* src_mask */
1552 1.1 christos 0xffff, /* dst_mask */
1553 1.1 christos FALSE), /* pcrel_offset */
1554 1.3 christos
1555 1.1 christos /* Like R_PPC_VLE_SDA21 but ignore overflow. */
1556 1.1 christos HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1557 1.1 christos 0, /* rightshift */
1558 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1559 1.1 christos 16, /* bitsize */
1560 1.1 christos FALSE, /* pc_relative */
1561 1.3 christos 0, /* bitpos */
1562 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1563 1.1 christos bfd_elf_generic_reloc, /* special_function */
1564 1.1 christos "R_PPC_VLE_SDA21_LO", /* name */
1565 1.1 christos FALSE, /* partial_inplace */
1566 1.3 christos 0, /* src_mask */
1567 1.1 christos 0xffff, /* dst_mask */
1568 1.1 christos FALSE), /* pcrel_offset */
1569 1.1 christos
1570 1.1 christos /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1571 1.1 christos HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1572 1.1 christos 0, /* rightshift */
1573 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1574 1.1 christos 16, /* bitsize */
1575 1.1 christos FALSE, /* pc_relative */
1576 1.3 christos 0, /* bitpos */
1577 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1578 1.1 christos bfd_elf_generic_reloc, /* special_function */
1579 1.1 christos "R_PPC_VLE_SDAREL_LO16A", /* name */
1580 1.1 christos FALSE, /* partial_inplace */
1581 1.1 christos 0, /* src_mask */
1582 1.1 christos 0x1f007ff, /* dst_mask */
1583 1.1 christos FALSE), /* pcrel_offset */
1584 1.1 christos
1585 1.1 christos /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1586 1.1 christos HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1587 1.1 christos 0, /* rightshift */
1588 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1589 1.1 christos 16, /* bitsize */
1590 1.1 christos FALSE, /* pc_relative */
1591 1.3 christos 0, /* bitpos */
1592 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1593 1.1 christos bfd_elf_generic_reloc, /* special_function */
1594 1.1 christos "R_PPC_VLE_SDAREL_LO16D", /* name */
1595 1.1 christos FALSE, /* partial_inplace */
1596 1.1 christos 0, /* src_mask */
1597 1.1 christos 0x1f07ff, /* dst_mask */
1598 1.1 christos FALSE), /* pcrel_offset */
1599 1.1 christos
1600 1.1 christos /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1601 1.3 christos HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
1602 1.1 christos 16, /* rightshift */
1603 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1604 1.1 christos 16, /* bitsize */
1605 1.1 christos FALSE, /* pc_relative */
1606 1.3 christos 0, /* bitpos */
1607 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1608 1.1 christos bfd_elf_generic_reloc, /* special_function */
1609 1.1 christos "R_PPC_VLE_SDAREL_HI16A", /* name */
1610 1.1 christos FALSE, /* partial_inplace */
1611 1.1 christos 0, /* src_mask */
1612 1.1 christos 0x1f007ff, /* dst_mask */
1613 1.1 christos FALSE), /* pcrel_offset */
1614 1.1 christos
1615 1.1 christos /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1616 1.3 christos HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
1617 1.1 christos 16, /* rightshift */
1618 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1619 1.1 christos 16, /* bitsize */
1620 1.1 christos FALSE, /* pc_relative */
1621 1.3 christos 0, /* bitpos */
1622 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1623 1.1 christos bfd_elf_generic_reloc, /* special_function */
1624 1.1 christos "R_PPC_VLE_SDAREL_HI16D", /* name */
1625 1.1 christos FALSE, /* partial_inplace */
1626 1.1 christos 0, /* src_mask */
1627 1.1 christos 0x1f07ff, /* dst_mask */
1628 1.1 christos FALSE), /* pcrel_offset */
1629 1.1 christos
1630 1.1 christos /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1631 1.3 christos HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
1632 1.1 christos 16, /* rightshift */
1633 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1634 1.1 christos 16, /* bitsize */
1635 1.1 christos FALSE, /* pc_relative */
1636 1.3 christos 0, /* bitpos */
1637 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1638 1.1 christos bfd_elf_generic_reloc, /* special_function */
1639 1.1 christos "R_PPC_VLE_SDAREL_HA16A", /* name */
1640 1.1 christos FALSE, /* partial_inplace */
1641 1.1 christos 0, /* src_mask */
1642 1.1 christos 0x1f007ff, /* dst_mask */
1643 1.1 christos FALSE), /* pcrel_offset */
1644 1.1 christos
1645 1.1 christos /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1646 1.3 christos HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
1647 1.1 christos 16, /* rightshift */
1648 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1649 1.1 christos 16, /* bitsize */
1650 1.1 christos FALSE, /* pc_relative */
1651 1.3 christos 0, /* bitpos */
1652 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1653 1.1 christos bfd_elf_generic_reloc, /* special_function */
1654 1.1 christos "R_PPC_VLE_SDAREL_HA16D", /* name */
1655 1.1 christos FALSE, /* partial_inplace */
1656 1.1 christos 0, /* src_mask */
1657 1.1 christos 0x1f07ff, /* dst_mask */
1658 1.1 christos FALSE), /* pcrel_offset */
1659 1.1 christos
1660 1.1 christos HOWTO (R_PPC_IRELATIVE, /* type */
1661 1.1 christos 0, /* rightshift */
1662 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1663 1.1 christos 32, /* bitsize */
1664 1.1 christos FALSE, /* pc_relative */
1665 1.3 christos 0, /* bitpos */
1666 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1667 1.1 christos bfd_elf_generic_reloc, /* special_function */
1668 1.1 christos "R_PPC_IRELATIVE", /* name */
1669 1.1 christos FALSE, /* partial_inplace */
1670 1.1 christos 0, /* src_mask */
1671 1.1 christos 0xffffffff, /* dst_mask */
1672 1.1 christos FALSE), /* pcrel_offset */
1673 1.1 christos
1674 1.1 christos /* A 16 bit relative relocation. */
1675 1.1 christos HOWTO (R_PPC_REL16, /* type */
1676 1.1 christos 0, /* rightshift */
1677 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1678 1.1 christos 16, /* bitsize */
1679 1.1 christos TRUE, /* pc_relative */
1680 1.3 christos 0, /* bitpos */
1681 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1682 1.1 christos bfd_elf_generic_reloc, /* special_function */
1683 1.1 christos "R_PPC_REL16", /* name */
1684 1.1 christos FALSE, /* partial_inplace */
1685 1.1 christos 0, /* src_mask */
1686 1.1 christos 0xffff, /* dst_mask */
1687 1.1 christos TRUE), /* pcrel_offset */
1688 1.1 christos
1689 1.1 christos /* A 16 bit relative relocation without overflow. */
1690 1.1 christos HOWTO (R_PPC_REL16_LO, /* type */
1691 1.1 christos 0, /* rightshift */
1692 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1693 1.1 christos 16, /* bitsize */
1694 1.1 christos TRUE, /* pc_relative */
1695 1.1 christos 0, /* bitpos */
1696 1.1 christos complain_overflow_dont,/* complain_on_overflow */
1697 1.1 christos bfd_elf_generic_reloc, /* special_function */
1698 1.1 christos "R_PPC_REL16_LO", /* name */
1699 1.1 christos FALSE, /* partial_inplace */
1700 1.1 christos 0, /* src_mask */
1701 1.1 christos 0xffff, /* dst_mask */
1702 1.1 christos TRUE), /* pcrel_offset */
1703 1.1 christos
1704 1.1 christos /* The high order 16 bits of a relative address. */
1705 1.1 christos HOWTO (R_PPC_REL16_HI, /* type */
1706 1.1 christos 16, /* rightshift */
1707 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1708 1.1 christos 16, /* bitsize */
1709 1.1 christos TRUE, /* pc_relative */
1710 1.1 christos 0, /* bitpos */
1711 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1712 1.1 christos bfd_elf_generic_reloc, /* special_function */
1713 1.1 christos "R_PPC_REL16_HI", /* name */
1714 1.1 christos FALSE, /* partial_inplace */
1715 1.1 christos 0, /* src_mask */
1716 1.1 christos 0xffff, /* dst_mask */
1717 1.1 christos TRUE), /* pcrel_offset */
1718 1.1 christos
1719 1.1 christos /* The high order 16 bits of a relative address, plus 1 if the contents of
1720 1.1 christos the low 16 bits, treated as a signed number, is negative. */
1721 1.1 christos HOWTO (R_PPC_REL16_HA, /* type */
1722 1.1 christos 16, /* rightshift */
1723 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1724 1.1 christos 16, /* bitsize */
1725 1.1 christos TRUE, /* pc_relative */
1726 1.1 christos 0, /* bitpos */
1727 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1728 1.1 christos ppc_elf_addr16_ha_reloc, /* special_function */
1729 1.1 christos "R_PPC_REL16_HA", /* name */
1730 1.1 christos FALSE, /* partial_inplace */
1731 1.1 christos 0, /* src_mask */
1732 1.1 christos 0xffff, /* dst_mask */
1733 1.1 christos TRUE), /* pcrel_offset */
1734 1.1 christos
1735 1.1 christos /* GNU extension to record C++ vtable hierarchy. */
1736 1.1 christos HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1737 1.1 christos 0, /* rightshift */
1738 1.1 christos 0, /* size (0 = byte, 1 = short, 2 = long) */
1739 1.1 christos 0, /* bitsize */
1740 1.1 christos FALSE, /* pc_relative */
1741 1.1 christos 0, /* bitpos */
1742 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1743 1.1 christos NULL, /* special_function */
1744 1.1 christos "R_PPC_GNU_VTINHERIT", /* name */
1745 1.1 christos FALSE, /* partial_inplace */
1746 1.1 christos 0, /* src_mask */
1747 1.1 christos 0, /* dst_mask */
1748 1.1 christos FALSE), /* pcrel_offset */
1749 1.1 christos
1750 1.1 christos /* GNU extension to record C++ vtable member usage. */
1751 1.1 christos HOWTO (R_PPC_GNU_VTENTRY, /* type */
1752 1.1 christos 0, /* rightshift */
1753 1.1 christos 0, /* size (0 = byte, 1 = short, 2 = long) */
1754 1.1 christos 0, /* bitsize */
1755 1.1 christos FALSE, /* pc_relative */
1756 1.1 christos 0, /* bitpos */
1757 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1758 1.1 christos NULL, /* special_function */
1759 1.1 christos "R_PPC_GNU_VTENTRY", /* name */
1760 1.1 christos FALSE, /* partial_inplace */
1761 1.1 christos 0, /* src_mask */
1762 1.1 christos 0, /* dst_mask */
1763 1.1 christos FALSE), /* pcrel_offset */
1764 1.1 christos
1765 1.1 christos /* Phony reloc to handle AIX style TOC entries. */
1766 1.1 christos HOWTO (R_PPC_TOC16, /* type */
1767 1.1 christos 0, /* rightshift */
1768 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1769 1.1 christos 16, /* bitsize */
1770 1.1 christos FALSE, /* pc_relative */
1771 1.1 christos 0, /* bitpos */
1772 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1773 1.1 christos bfd_elf_generic_reloc, /* special_function */
1774 1.1 christos "R_PPC_TOC16", /* name */
1775 1.1 christos FALSE, /* partial_inplace */
1776 1.1 christos 0, /* src_mask */
1777 1.1 christos 0xffff, /* dst_mask */
1778 1.1 christos FALSE), /* pcrel_offset */
1779 1.1 christos };
1780 1.1 christos
1781 1.1 christos /* External 32-bit PPC structure for PRPSINFO. This structure is
1782 1.1 christos ABI-defined, thus we choose to use char arrays here in order to
1783 1.1 christos avoid dealing with different types in different architectures.
1784 1.1 christos
1785 1.1 christos The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while
1786 1.1 christos most non-PPC architectures use `short int'.
1787 1.1 christos
1788 1.1 christos This structure will ultimately be written in the corefile's note
1789 1.1 christos section, as the PRPSINFO. */
1790 1.1 christos
1791 1.1 christos struct elf_external_ppc_linux_prpsinfo32
1792 1.1 christos {
1793 1.1 christos char pr_state; /* Numeric process state. */
1794 1.1 christos char pr_sname; /* Char for pr_state. */
1795 1.1 christos char pr_zomb; /* Zombie. */
1796 1.1 christos char pr_nice; /* Nice val. */
1797 1.1 christos char pr_flag[4]; /* Flags. */
1798 1.1 christos char pr_uid[4];
1799 1.1 christos char pr_gid[4];
1800 1.1 christos char pr_pid[4];
1801 1.1 christos char pr_ppid[4];
1802 1.1 christos char pr_pgrp[4];
1803 1.1 christos char pr_sid[4];
1804 1.1 christos char pr_fname[16]; /* Filename of executable. */
1805 1.1 christos char pr_psargs[80]; /* Initial part of arg list. */
1806 1.1 christos };
1807 1.1 christos
1808 1.1 christos /* Helper macro to swap (properly handling endianess) things from the
1809 1.1 christos `elf_internal_prpsinfo' structure to the `elf_external_ppc_prpsinfo32'
1810 1.1 christos structure.
1811 1.1 christos
1812 1.1 christos Note that FROM should be a pointer, and TO should be the explicit type. */
1813 1.1 christos
1814 1.1 christos #define PPC_LINUX_PRPSINFO32_SWAP_FIELDS(abfd, from, to) \
1815 1.1 christos do \
1816 1.1 christos { \
1817 1.1 christos H_PUT_8 (abfd, from->pr_state, &to.pr_state); \
1818 1.1 christos H_PUT_8 (abfd, from->pr_sname, &to.pr_sname); \
1819 1.1 christos H_PUT_8 (abfd, from->pr_zomb, &to.pr_zomb); \
1820 1.1 christos H_PUT_8 (abfd, from->pr_nice, &to.pr_nice); \
1821 1.1 christos H_PUT_32 (abfd, from->pr_flag, to.pr_flag); \
1822 1.1 christos H_PUT_32 (abfd, from->pr_uid, to.pr_uid); \
1823 1.1 christos H_PUT_32 (abfd, from->pr_gid, to.pr_gid); \
1824 1.1 christos H_PUT_32 (abfd, from->pr_pid, to.pr_pid); \
1825 1.1 christos H_PUT_32 (abfd, from->pr_ppid, to.pr_ppid); \
1826 1.1 christos H_PUT_32 (abfd, from->pr_pgrp, to.pr_pgrp); \
1827 1.1 christos H_PUT_32 (abfd, from->pr_sid, to.pr_sid); \
1828 1.1 christos strncpy (to.pr_fname, from->pr_fname, sizeof (to.pr_fname)); \
1829 1.1 christos strncpy (to.pr_psargs, from->pr_psargs, sizeof (to.pr_psargs)); \
1830 1.1 christos } while (0)
1831 1.1 christos
1832 1.1 christos
1833 1.1 christos /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1835 1.1 christos
1836 1.1 christos static void
1837 1.1 christos ppc_elf_howto_init (void)
1838 1.1 christos {
1839 1.1 christos unsigned int i, type;
1840 1.1 christos
1841 1.1 christos for (i = 0;
1842 1.1 christos i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1843 1.1 christos i++)
1844 1.1 christos {
1845 1.1 christos type = ppc_elf_howto_raw[i].type;
1846 1.1 christos if (type >= (sizeof (ppc_elf_howto_table)
1847 1.1 christos / sizeof (ppc_elf_howto_table[0])))
1848 1.1 christos abort ();
1849 1.1 christos ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1850 1.1 christos }
1851 1.1 christos }
1852 1.1 christos
1853 1.1 christos static reloc_howto_type *
1854 1.1 christos ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1855 1.1 christos bfd_reloc_code_real_type code)
1856 1.1 christos {
1857 1.1 christos enum elf_ppc_reloc_type r;
1858 1.1 christos
1859 1.1 christos /* Initialize howto table if not already done. */
1860 1.1 christos if (!ppc_elf_howto_table[R_PPC_ADDR32])
1861 1.1 christos ppc_elf_howto_init ();
1862 1.1 christos
1863 1.1 christos switch (code)
1864 1.1 christos {
1865 1.1 christos default:
1866 1.1 christos return NULL;
1867 1.1 christos
1868 1.1 christos case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1869 1.1 christos case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1870 1.1 christos case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1871 1.1 christos case BFD_RELOC_PPC64_ADDR16_DS:
1872 1.1 christos case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1873 1.1 christos case BFD_RELOC_PPC64_ADDR16_LO_DS:
1874 1.1 christos case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1875 1.1 christos case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1876 1.1 christos case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1877 1.1 christos case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1878 1.1 christos case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1879 1.1 christos case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1880 1.1 christos case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1881 1.1 christos case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1882 1.1 christos case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1883 1.1 christos case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1884 1.1 christos case BFD_RELOC_PPC64_GOT16_DS:
1885 1.1 christos case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1886 1.1 christos case BFD_RELOC_PPC64_GOT16_LO_DS:
1887 1.1 christos case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1888 1.1 christos case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1889 1.1 christos case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1890 1.1 christos case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1891 1.1 christos case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1892 1.1 christos case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1893 1.1 christos case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1894 1.1 christos case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1895 1.1 christos case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1896 1.1 christos case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1897 1.1 christos case BFD_RELOC_PPC64_PLT16_LO_DS:
1898 1.1 christos case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1899 1.1 christos case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1900 1.1 christos case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1901 1.1 christos case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1902 1.1 christos case BFD_RELOC_PPC64_SECTOFF_DS:
1903 1.1 christos case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1904 1.1 christos case BFD_RELOC_PPC64_SECTOFF_LO_DS:
1905 1.1 christos case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1906 1.1 christos case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1907 1.1 christos case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1908 1.1 christos case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1909 1.1 christos case BFD_RELOC_PPC64_TOC16_DS:
1910 1.1 christos case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1911 1.1 christos case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1912 1.1 christos case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1913 1.1 christos case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1914 1.1 christos case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1915 1.1 christos case BFD_RELOC_PPC64_TPREL16_DS:
1916 1.1 christos case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1917 1.1 christos case BFD_RELOC_PPC64_TPREL16_LO_DS:
1918 1.1 christos case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1919 1.1 christos case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1920 1.1 christos case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1921 1.1 christos case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1922 1.1 christos case BFD_RELOC_PPC64_DTPREL16_DS:
1923 1.1 christos case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1924 1.1 christos case BFD_RELOC_PPC64_DTPREL16_LO_DS:
1925 1.1 christos case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1926 1.1 christos case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1927 1.1 christos case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1928 1.1 christos case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1929 1.1 christos case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1930 1.1 christos case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1931 1.1 christos case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1932 1.1 christos case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1933 1.1 christos case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1934 1.1 christos case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1935 1.1 christos case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1936 1.1 christos case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1937 1.1 christos case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1938 1.1 christos case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1939 1.1 christos case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1940 1.1 christos case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1941 1.1 christos case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1942 1.1 christos case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1943 1.1 christos case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1944 1.1 christos case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1945 1.1 christos case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1946 1.1 christos case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1947 1.1 christos case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1948 1.1 christos case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1949 1.1 christos case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1950 1.1 christos case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1951 1.1 christos case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1952 1.1 christos case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1953 1.1 christos case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1954 1.1 christos case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1955 1.1 christos case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1956 1.1 christos case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1957 1.1 christos case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1958 1.1 christos case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1959 1.1 christos case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1960 1.1 christos case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1961 1.1 christos case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1962 1.1 christos case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1963 1.1 christos case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1964 1.1 christos case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1965 1.1 christos case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1966 1.1 christos case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1967 1.1 christos case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1968 1.1 christos case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1969 1.1 christos case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1970 1.1 christos case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1971 1.1 christos case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1972 1.1 christos case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1973 1.1 christos r = R_PPC_VLE_SDAREL_LO16A;
1974 1.1 christos break;
1975 1.1 christos case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1976 1.1 christos r = R_PPC_VLE_SDAREL_LO16D;
1977 1.1 christos break;
1978 1.1 christos case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1979 1.1 christos r = R_PPC_VLE_SDAREL_HI16A;
1980 1.1 christos break;
1981 1.1 christos case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1982 1.1 christos r = R_PPC_VLE_SDAREL_HI16D;
1983 1.1 christos break;
1984 1.1 christos case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1985 1.1 christos r = R_PPC_VLE_SDAREL_HA16A;
1986 1.1 christos break;
1987 1.1 christos case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1988 1.1 christos r = R_PPC_VLE_SDAREL_HA16D;
1989 1.1 christos break;
1990 1.1 christos case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1991 1.1 christos case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1992 1.1 christos case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1993 1.1 christos case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1994 1.1 christos case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1995 1.1 christos case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1996 1.1 christos }
1997 1.1 christos
1998 1.1 christos return ppc_elf_howto_table[r];
1999 1.1 christos };
2000 1.1 christos
2001 1.1 christos static reloc_howto_type *
2002 1.1 christos ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2003 1.1 christos const char *r_name)
2004 1.1 christos {
2005 1.1 christos unsigned int i;
2006 1.1 christos
2007 1.1 christos for (i = 0;
2008 1.1 christos i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2009 1.1 christos i++)
2010 1.1 christos if (ppc_elf_howto_raw[i].name != NULL
2011 1.1 christos && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2012 1.1 christos return &ppc_elf_howto_raw[i];
2013 1.1 christos
2014 1.1 christos return NULL;
2015 1.1 christos }
2016 1.1 christos
2017 1.1 christos /* Set the howto pointer for a PowerPC ELF reloc. */
2018 1.1 christos
2019 1.1 christos static void
2020 1.1 christos ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
2021 1.1 christos arelent *cache_ptr,
2022 1.5 christos Elf_Internal_Rela *dst)
2023 1.5 christos {
2024 1.1 christos unsigned int r_type;
2025 1.1 christos
2026 1.1 christos /* Initialize howto table if not already done. */
2027 1.1 christos if (!ppc_elf_howto_table[R_PPC_ADDR32])
2028 1.5 christos ppc_elf_howto_init ();
2029 1.5 christos
2030 1.5 christos r_type = ELF32_R_TYPE (dst->r_info);
2031 1.5 christos if (r_type >= R_PPC_max)
2032 1.5 christos {
2033 1.5 christos (*_bfd_error_handler) (_("%B: unrecognised PPC reloc number: %d"),
2034 1.5 christos abfd, r_type);
2035 1.5 christos bfd_set_error (bfd_error_bad_value);
2036 1.5 christos r_type = R_PPC_NONE;
2037 1.1 christos }
2038 1.1 christos cache_ptr->howto = ppc_elf_howto_table[r_type];
2039 1.1 christos
2040 1.1 christos /* Just because the above assert didn't trigger doesn't mean that
2041 1.1 christos ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2042 1.1 christos if (!cache_ptr->howto)
2043 1.5 christos {
2044 1.1 christos (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2045 1.1 christos abfd, r_type);
2046 1.1 christos bfd_set_error (bfd_error_bad_value);
2047 1.1 christos
2048 1.1 christos cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2049 1.1 christos }
2050 1.1 christos }
2051 1.1 christos
2052 1.1 christos /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2053 1.1 christos
2054 1.1 christos static bfd_reloc_status_type
2055 1.1 christos ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
2056 1.1 christos arelent *reloc_entry,
2057 1.1 christos asymbol *symbol,
2058 1.1 christos void *data ATTRIBUTE_UNUSED,
2059 1.1 christos asection *input_section,
2060 1.1 christos bfd *output_bfd,
2061 1.1 christos char **error_message ATTRIBUTE_UNUSED)
2062 1.1 christos {
2063 1.1 christos bfd_vma relocation;
2064 1.1 christos
2065 1.1 christos if (output_bfd != NULL)
2066 1.1 christos {
2067 1.1 christos reloc_entry->address += input_section->output_offset;
2068 1.1 christos return bfd_reloc_ok;
2069 1.1 christos }
2070 1.1 christos
2071 1.1 christos if (bfd_is_com_section (symbol->section))
2072 1.1 christos relocation = 0;
2073 1.1 christos else
2074 1.1 christos relocation = symbol->value;
2075 1.1 christos
2076 1.1 christos relocation += symbol->section->output_section->vma;
2077 1.1 christos relocation += symbol->section->output_offset;
2078 1.1 christos relocation += reloc_entry->addend;
2079 1.1 christos if (reloc_entry->howto->pc_relative)
2080 1.1 christos relocation -= reloc_entry->address;
2081 1.1 christos
2082 1.1 christos reloc_entry->addend += (relocation & 0x8000) << 1;
2083 1.1 christos
2084 1.1 christos return bfd_reloc_continue;
2085 1.1 christos }
2086 1.1 christos
2087 1.1 christos static bfd_reloc_status_type
2088 1.1 christos ppc_elf_unhandled_reloc (bfd *abfd,
2089 1.1 christos arelent *reloc_entry,
2090 1.1 christos asymbol *symbol,
2091 1.1 christos void *data,
2092 1.1 christos asection *input_section,
2093 1.1 christos bfd *output_bfd,
2094 1.1 christos char **error_message)
2095 1.1 christos {
2096 1.1 christos /* If this is a relocatable link (output_bfd test tells us), just
2097 1.1 christos call the generic function. Any adjustment will be done at final
2098 1.1 christos link time. */
2099 1.1 christos if (output_bfd != NULL)
2100 1.1 christos return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2101 1.1 christos input_section, output_bfd, error_message);
2102 1.1 christos
2103 1.1 christos if (error_message != NULL)
2104 1.1 christos {
2105 1.1 christos static char buf[60];
2106 1.1 christos sprintf (buf, _("generic linker can't handle %s"),
2107 1.1 christos reloc_entry->howto->name);
2108 1.1 christos *error_message = buf;
2109 1.1 christos }
2110 1.1 christos return bfd_reloc_dangerous;
2111 1.1 christos }
2112 1.1 christos
2113 1.1 christos /* Sections created by the linker. */
2115 1.1 christos
2116 1.1 christos typedef struct elf_linker_section
2117 1.1 christos {
2118 1.1 christos /* Pointer to the bfd section. */
2119 1.1 christos asection *section;
2120 1.1 christos /* Section name. */
2121 1.1 christos const char *name;
2122 1.1 christos /* Associated bss section name. */
2123 1.1 christos const char *bss_name;
2124 1.1 christos /* Associated symbol name. */
2125 1.1 christos const char *sym_name;
2126 1.1 christos /* Associated symbol. */
2127 1.1 christos struct elf_link_hash_entry *sym;
2128 1.1 christos } elf_linker_section_t;
2129 1.1 christos
2130 1.1 christos /* Linked list of allocated pointer entries. This hangs off of the
2131 1.1 christos symbol lists, and provides allows us to return different pointers,
2132 1.1 christos based on different addend's. */
2133 1.1 christos
2134 1.1 christos typedef struct elf_linker_section_pointers
2135 1.1 christos {
2136 1.1 christos /* next allocated pointer for this symbol */
2137 1.1 christos struct elf_linker_section_pointers *next;
2138 1.1 christos /* offset of pointer from beginning of section */
2139 1.1 christos bfd_vma offset;
2140 1.1 christos /* addend used */
2141 1.1 christos bfd_vma addend;
2142 1.1 christos /* which linker section this is */
2143 1.1 christos elf_linker_section_t *lsect;
2144 1.1 christos } elf_linker_section_pointers_t;
2145 1.1 christos
2146 1.1 christos struct ppc_elf_obj_tdata
2147 1.1 christos {
2148 1.1 christos struct elf_obj_tdata elf;
2149 1.1 christos
2150 1.1 christos /* A mapping from local symbols to offsets into the various linker
2151 1.1 christos sections added. This is index by the symbol index. */
2152 1.1 christos elf_linker_section_pointers_t **linker_section_pointers;
2153 1.1 christos
2154 1.1 christos /* Flags used to auto-detect plt type. */
2155 1.1 christos unsigned int makes_plt_call : 1;
2156 1.1 christos unsigned int has_rel16 : 1;
2157 1.1 christos };
2158 1.1 christos
2159 1.1 christos #define ppc_elf_tdata(bfd) \
2160 1.1 christos ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2161 1.1 christos
2162 1.1 christos #define elf_local_ptr_offsets(bfd) \
2163 1.1 christos (ppc_elf_tdata (bfd)->linker_section_pointers)
2164 1.1 christos
2165 1.1 christos #define is_ppc_elf(bfd) \
2166 1.1 christos (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2167 1.1 christos && elf_object_id (bfd) == PPC32_ELF_DATA)
2168 1.1 christos
2169 1.1 christos /* Override the generic function because we store some extras. */
2170 1.1 christos
2171 1.1 christos static bfd_boolean
2172 1.1 christos ppc_elf_mkobject (bfd *abfd)
2173 1.1 christos {
2174 1.1 christos return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2175 1.1 christos PPC32_ELF_DATA);
2176 1.1 christos }
2177 1.1 christos
2178 1.1 christos /* Fix bad default arch selected for a 32 bit input bfd when the
2179 1.1 christos default is 64 bit. */
2180 1.1 christos
2181 1.1 christos static bfd_boolean
2182 1.1 christos ppc_elf_object_p (bfd *abfd)
2183 1.1 christos {
2184 1.1 christos if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
2185 1.1 christos {
2186 1.1 christos Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2187 1.1 christos
2188 1.1 christos if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2189 1.1 christos {
2190 1.1 christos /* Relies on arch after 64 bit default being 32 bit default. */
2191 1.1 christos abfd->arch_info = abfd->arch_info->next;
2192 1.1 christos BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2193 1.1 christos }
2194 1.1 christos }
2195 1.1 christos return TRUE;
2196 1.1 christos }
2197 1.1 christos
2198 1.1 christos /* Function to set whether a module needs the -mrelocatable bit set. */
2199 1.1 christos
2200 1.1 christos static bfd_boolean
2201 1.1 christos ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2202 1.1 christos {
2203 1.1 christos BFD_ASSERT (!elf_flags_init (abfd)
2204 1.1 christos || elf_elfheader (abfd)->e_flags == flags);
2205 1.1 christos
2206 1.1 christos elf_elfheader (abfd)->e_flags = flags;
2207 1.1 christos elf_flags_init (abfd) = TRUE;
2208 1.1 christos return TRUE;
2209 1.1 christos }
2210 1.1 christos
2211 1.1 christos /* Support for core dump NOTE sections. */
2212 1.1 christos
2213 1.1 christos static bfd_boolean
2214 1.1 christos ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2215 1.1 christos {
2216 1.1 christos int offset;
2217 1.1 christos unsigned int size;
2218 1.1 christos
2219 1.1 christos switch (note->descsz)
2220 1.1 christos {
2221 1.1 christos default:
2222 1.1 christos return FALSE;
2223 1.1 christos
2224 1.1 christos case 268: /* Linux/PPC. */
2225 1.1 christos /* pr_cursig */
2226 1.1 christos elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2227 1.1 christos
2228 1.1 christos /* pr_pid */
2229 1.1 christos elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2230 1.1 christos
2231 1.1 christos /* pr_reg */
2232 1.1 christos offset = 72;
2233 1.1 christos size = 192;
2234 1.1 christos
2235 1.1 christos break;
2236 1.1 christos }
2237 1.1 christos
2238 1.1 christos /* Make a ".reg/999" section. */
2239 1.1 christos return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2240 1.1 christos size, note->descpos + offset);
2241 1.1 christos }
2242 1.1 christos
2243 1.1 christos static bfd_boolean
2244 1.1 christos ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2245 1.1 christos {
2246 1.1 christos switch (note->descsz)
2247 1.1 christos {
2248 1.1 christos default:
2249 1.1 christos return FALSE;
2250 1.1 christos
2251 1.1 christos case 128: /* Linux/PPC elf_prpsinfo. */
2252 1.1 christos elf_tdata (abfd)->core->pid
2253 1.1 christos = bfd_get_32 (abfd, note->descdata + 16);
2254 1.1 christos elf_tdata (abfd)->core->program
2255 1.1 christos = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2256 1.1 christos elf_tdata (abfd)->core->command
2257 1.1 christos = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2258 1.1 christos }
2259 1.1 christos
2260 1.1 christos /* Note that for some reason, a spurious space is tacked
2261 1.1 christos onto the end of the args in some (at least one anyway)
2262 1.1 christos implementations, so strip it off if it exists. */
2263 1.1 christos
2264 1.1 christos {
2265 1.1 christos char *command = elf_tdata (abfd)->core->command;
2266 1.1 christos int n = strlen (command);
2267 1.1 christos
2268 1.1 christos if (0 < n && command[n - 1] == ' ')
2269 1.1 christos command[n - 1] = '\0';
2270 1.1 christos }
2271 1.1 christos
2272 1.1 christos return TRUE;
2273 1.1 christos }
2274 1.1 christos
2275 1.1 christos char *
2276 1.1 christos elfcore_write_ppc_linux_prpsinfo32 (bfd *abfd, char *buf, int *bufsiz,
2277 1.1 christos const struct elf_internal_linux_prpsinfo *prpsinfo)
2278 1.1 christos {
2279 1.1 christos struct elf_external_ppc_linux_prpsinfo32 data;
2280 1.1 christos
2281 1.1 christos memset (&data, 0, sizeof (data));
2282 1.1 christos PPC_LINUX_PRPSINFO32_SWAP_FIELDS (abfd, prpsinfo, data);
2283 1.1 christos
2284 1.1 christos return elfcore_write_note (abfd, buf, bufsiz,
2285 1.1 christos "CORE", NT_PRPSINFO, &data, sizeof (data));
2286 1.1 christos }
2287 1.1 christos
2288 1.1 christos static char *
2289 1.1 christos ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2290 1.1 christos {
2291 1.1 christos switch (note_type)
2292 1.1 christos {
2293 1.1 christos default:
2294 1.1 christos return NULL;
2295 1.1 christos
2296 1.1 christos case NT_PRPSINFO:
2297 1.1 christos {
2298 1.1 christos char data[128];
2299 1.1 christos va_list ap;
2300 1.1 christos
2301 1.1 christos va_start (ap, note_type);
2302 1.1 christos memset (data, 0, sizeof (data));
2303 1.1 christos strncpy (data + 32, va_arg (ap, const char *), 16);
2304 1.1 christos strncpy (data + 48, va_arg (ap, const char *), 80);
2305 1.1 christos va_end (ap);
2306 1.1 christos return elfcore_write_note (abfd, buf, bufsiz,
2307 1.1 christos "CORE", note_type, data, sizeof (data));
2308 1.1 christos }
2309 1.1 christos
2310 1.1 christos case NT_PRSTATUS:
2311 1.1 christos {
2312 1.1 christos char data[268];
2313 1.1 christos va_list ap;
2314 1.1 christos long pid;
2315 1.1 christos int cursig;
2316 1.1 christos const void *greg;
2317 1.1 christos
2318 1.1 christos va_start (ap, note_type);
2319 1.1 christos memset (data, 0, 72);
2320 1.1 christos pid = va_arg (ap, long);
2321 1.1 christos bfd_put_32 (abfd, pid, data + 24);
2322 1.1 christos cursig = va_arg (ap, int);
2323 1.1 christos bfd_put_16 (abfd, cursig, data + 12);
2324 1.1 christos greg = va_arg (ap, const void *);
2325 1.1 christos memcpy (data + 72, greg, 192);
2326 1.1 christos memset (data + 264, 0, 4);
2327 1.1 christos va_end (ap);
2328 1.1 christos return elfcore_write_note (abfd, buf, bufsiz,
2329 1.1 christos "CORE", note_type, data, sizeof (data));
2330 1.1 christos }
2331 1.1 christos }
2332 1.1 christos }
2333 1.1 christos
2334 1.1 christos static flagword
2335 1.1 christos ppc_elf_lookup_section_flags (char *flag_name)
2336 1.1 christos {
2337 1.1 christos
2338 1.1 christos if (!strcmp (flag_name, "SHF_PPC_VLE"))
2339 1.1 christos return SHF_PPC_VLE;
2340 1.1 christos
2341 1.1 christos return 0;
2342 1.1 christos }
2343 1.1 christos
2344 1.1 christos /* Add the VLE flag if required. */
2345 1.1 christos
2346 1.1 christos bfd_boolean
2347 1.1 christos ppc_elf_section_processing (bfd *abfd, Elf_Internal_Shdr *shdr)
2348 1.1 christos {
2349 1.1 christos if (bfd_get_mach (abfd) == bfd_mach_ppc_vle
2350 1.1 christos && (shdr->sh_flags & SHF_EXECINSTR) != 0)
2351 1.1 christos shdr->sh_flags |= SHF_PPC_VLE;
2352 1.1 christos
2353 1.1 christos return TRUE;
2354 1.1 christos }
2355 1.1 christos
2356 1.1 christos /* Return address for Ith PLT stub in section PLT, for relocation REL
2357 1.1 christos or (bfd_vma) -1 if it should not be included. */
2358 1.1 christos
2359 1.1 christos static bfd_vma
2360 1.1 christos ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2361 1.1 christos const asection *plt ATTRIBUTE_UNUSED,
2362 1.1 christos const arelent *rel)
2363 1.1 christos {
2364 1.1 christos return rel->address;
2365 1.1 christos }
2366 1.1 christos
2367 1.1 christos /* Handle a PowerPC specific section when reading an object file. This
2368 1.1 christos is called when bfd_section_from_shdr finds a section with an unknown
2369 1.1 christos type. */
2370 1.1 christos
2371 1.1 christos static bfd_boolean
2372 1.1 christos ppc_elf_section_from_shdr (bfd *abfd,
2373 1.1 christos Elf_Internal_Shdr *hdr,
2374 1.1 christos const char *name,
2375 1.1 christos int shindex)
2376 1.1 christos {
2377 1.1 christos asection *newsect;
2378 1.1 christos flagword flags;
2379 1.1 christos
2380 1.1 christos if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2381 1.1 christos return FALSE;
2382 1.1 christos
2383 1.1 christos newsect = hdr->bfd_section;
2384 1.1 christos flags = bfd_get_section_flags (abfd, newsect);
2385 1.1 christos if (hdr->sh_flags & SHF_EXCLUDE)
2386 1.1 christos flags |= SEC_EXCLUDE;
2387 1.1 christos
2388 1.1 christos if (hdr->sh_type == SHT_ORDERED)
2389 1.1 christos flags |= SEC_SORT_ENTRIES;
2390 1.1 christos
2391 1.1 christos bfd_set_section_flags (abfd, newsect, flags);
2392 1.1 christos return TRUE;
2393 1.1 christos }
2394 1.1 christos
2395 1.1 christos /* Set up any other section flags and such that may be necessary. */
2396 1.1 christos
2397 1.1 christos static bfd_boolean
2398 1.1 christos ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2399 1.1 christos Elf_Internal_Shdr *shdr,
2400 1.1 christos asection *asect)
2401 1.1 christos {
2402 1.1 christos if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2403 1.1 christos shdr->sh_type = SHT_ORDERED;
2404 1.1 christos
2405 1.1 christos return TRUE;
2406 1.1 christos }
2407 1.1 christos
2408 1.1 christos /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2409 1.1 christos need to bump up the number of section headers. */
2410 1.1 christos
2411 1.1 christos static int
2412 1.1 christos ppc_elf_additional_program_headers (bfd *abfd,
2413 1.1 christos struct bfd_link_info *info ATTRIBUTE_UNUSED)
2414 1.1 christos {
2415 1.1 christos asection *s;
2416 1.1 christos int ret = 0;
2417 1.1 christos
2418 1.1 christos s = bfd_get_section_by_name (abfd, ".sbss2");
2419 1.1 christos if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2420 1.1 christos ++ret;
2421 1.1 christos
2422 1.1 christos s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2423 1.1 christos if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2424 1.1 christos ++ret;
2425 1.1 christos
2426 1.1 christos return ret;
2427 1.1 christos }
2428 1.1 christos
2429 1.1 christos /* Modify the segment map for VLE executables. */
2430 1.1 christos
2431 1.1 christos bfd_boolean
2432 1.1 christos ppc_elf_modify_segment_map (bfd *abfd,
2433 1.1 christos struct bfd_link_info *info ATTRIBUTE_UNUSED)
2434 1.1 christos {
2435 1.1 christos struct elf_segment_map *m, *n;
2436 1.1 christos bfd_size_type amt;
2437 1.1 christos unsigned int j, k;
2438 1.1 christos bfd_boolean sect0_vle, sectj_vle;
2439 1.1 christos
2440 1.1 christos /* At this point in the link, output sections have already been sorted by
2441 1.1 christos LMA and assigned to segments. All that is left to do is to ensure
2442 1.1 christos there is no mixing of VLE & non-VLE sections in a text segment.
2443 1.1 christos If we find that case, we split the segment.
2444 1.1 christos We maintain the original output section order. */
2445 1.1 christos
2446 1.1 christos for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2447 1.1 christos {
2448 1.1 christos if (m->count == 0)
2449 1.1 christos continue;
2450 1.1 christos
2451 1.1 christos sect0_vle = (elf_section_flags (m->sections[0]) & SHF_PPC_VLE) != 0;
2452 1.1 christos for (j = 1; j < m->count; ++j)
2453 1.1 christos {
2454 1.1 christos sectj_vle = (elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0;
2455 1.1 christos
2456 1.1 christos if (sectj_vle != sect0_vle)
2457 1.1 christos break;
2458 1.1 christos }
2459 1.1 christos if (j >= m->count)
2460 1.1 christos continue;
2461 1.1 christos
2462 1.1 christos /* sections 0..j-1 stay in this (current) segment,
2463 1.1 christos the remainder are put in a new segment.
2464 1.1 christos The scan resumes with the new segment. */
2465 1.1 christos
2466 1.1 christos /* Fix the new segment. */
2467 1.1 christos amt = sizeof (struct elf_segment_map);
2468 1.1 christos amt += (m->count - j - 1) * sizeof (asection *);
2469 1.1 christos n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2470 1.1 christos if (n == NULL)
2471 1.1 christos return FALSE;
2472 1.1 christos
2473 1.1 christos n->p_type = PT_LOAD;
2474 1.1 christos n->p_flags = PF_X | PF_R;
2475 1.1 christos if (sectj_vle)
2476 1.1 christos n->p_flags |= PF_PPC_VLE;
2477 1.1 christos n->count = m->count - j;
2478 1.1 christos for (k = 0; k < n->count; ++k)
2479 1.1 christos {
2480 1.1 christos n->sections[k] = m->sections[j+k];
2481 1.1 christos m->sections[j+k] = NULL;
2482 1.1 christos }
2483 1.1 christos n->next = m->next;
2484 1.1 christos m->next = n;
2485 1.1 christos
2486 1.1 christos /* Fix the current segment */
2487 1.1 christos m->count = j;
2488 1.1 christos }
2489 1.1 christos
2490 1.1 christos return TRUE;
2491 1.1 christos }
2492 1.1 christos
2493 1.1 christos /* Add extra PPC sections -- Note, for now, make .sbss2 and
2494 1.1 christos .PPC.EMB.sbss0 a normal section, and not a bss section so
2495 1.1 christos that the linker doesn't crater when trying to make more than
2496 1.1 christos 2 sections. */
2497 1.1 christos
2498 1.1 christos static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2499 1.1 christos {
2500 1.1 christos { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2501 1.1 christos { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2502 1.1 christos { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2503 1.1 christos { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2504 1.1 christos { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2505 1.1 christos { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2506 1.1 christos { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
2507 1.1 christos { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2508 1.1 christos { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2509 1.1 christos { NULL, 0, 0, 0, 0 }
2510 1.1 christos };
2511 1.1 christos
2512 1.1 christos /* This is what we want for new plt/got. */
2513 1.1 christos static struct bfd_elf_special_section ppc_alt_plt =
2514 1.1 christos { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2515 1.1 christos
2516 1.1 christos static const struct bfd_elf_special_section *
2517 1.1 christos ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2518 1.1 christos {
2519 1.1 christos const struct bfd_elf_special_section *ssect;
2520 1.1 christos
2521 1.1 christos /* See if this is one of the special sections. */
2522 1.1 christos if (sec->name == NULL)
2523 1.1 christos return NULL;
2524 1.1 christos
2525 1.1 christos ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2526 1.1 christos sec->use_rela_p);
2527 1.1 christos if (ssect != NULL)
2528 1.1 christos {
2529 1.1 christos if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2530 1.1 christos ssect = &ppc_alt_plt;
2531 1.1 christos return ssect;
2532 1.1 christos }
2533 1.1 christos
2534 1.1 christos return _bfd_elf_get_sec_type_attr (abfd, sec);
2535 1.1 christos }
2536 1.1 christos
2537 1.1 christos /* Very simple linked list structure for recording apuinfo values. */
2539 1.1 christos typedef struct apuinfo_list
2540 1.1 christos {
2541 1.1 christos struct apuinfo_list *next;
2542 1.1 christos unsigned long value;
2543 1.1 christos }
2544 1.1 christos apuinfo_list;
2545 1.1 christos
2546 1.1 christos static apuinfo_list *head;
2547 1.1 christos static bfd_boolean apuinfo_set;
2548 1.1 christos
2549 1.1 christos static void
2550 1.1 christos apuinfo_list_init (void)
2551 1.1 christos {
2552 1.1 christos head = NULL;
2553 1.1 christos apuinfo_set = FALSE;
2554 1.1 christos }
2555 1.1 christos
2556 1.1 christos static void
2557 1.1 christos apuinfo_list_add (unsigned long value)
2558 1.1 christos {
2559 1.1 christos apuinfo_list *entry = head;
2560 1.1 christos
2561 1.1 christos while (entry != NULL)
2562 1.1 christos {
2563 1.1 christos if (entry->value == value)
2564 1.1 christos return;
2565 1.1 christos entry = entry->next;
2566 1.1 christos }
2567 1.1 christos
2568 1.1 christos entry = bfd_malloc (sizeof (* entry));
2569 1.1 christos if (entry == NULL)
2570 1.1 christos return;
2571 1.1 christos
2572 1.1 christos entry->value = value;
2573 1.1 christos entry->next = head;
2574 1.1 christos head = entry;
2575 1.1 christos }
2576 1.1 christos
2577 1.1 christos static unsigned
2578 1.1 christos apuinfo_list_length (void)
2579 1.1 christos {
2580 1.1 christos apuinfo_list *entry;
2581 1.1 christos unsigned long count;
2582 1.1 christos
2583 1.1 christos for (entry = head, count = 0;
2584 1.1 christos entry;
2585 1.1 christos entry = entry->next)
2586 1.1 christos ++ count;
2587 1.1 christos
2588 1.1 christos return count;
2589 1.1 christos }
2590 1.1 christos
2591 1.1 christos static inline unsigned long
2592 1.1 christos apuinfo_list_element (unsigned long number)
2593 1.1 christos {
2594 1.1 christos apuinfo_list * entry;
2595 1.1 christos
2596 1.1 christos for (entry = head;
2597 1.1 christos entry && number --;
2598 1.1 christos entry = entry->next)
2599 1.1 christos ;
2600 1.1 christos
2601 1.1 christos return entry ? entry->value : 0;
2602 1.1 christos }
2603 1.1 christos
2604 1.1 christos static void
2605 1.1 christos apuinfo_list_finish (void)
2606 1.1 christos {
2607 1.1 christos apuinfo_list *entry;
2608 1.1 christos
2609 1.1 christos for (entry = head; entry;)
2610 1.1 christos {
2611 1.1 christos apuinfo_list *next = entry->next;
2612 1.1 christos free (entry);
2613 1.1 christos entry = next;
2614 1.1 christos }
2615 1.1 christos
2616 1.1 christos head = NULL;
2617 1.1 christos }
2618 1.1 christos
2619 1.1 christos #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2620 1.1 christos #define APUINFO_LABEL "APUinfo"
2621 1.1 christos
2622 1.1 christos /* Scan the input BFDs and create a linked list of
2623 1.1 christos the APUinfo values that will need to be emitted. */
2624 1.1 christos
2625 1.1 christos static void
2626 1.1 christos ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2627 1.1 christos {
2628 1.1 christos bfd *ibfd;
2629 1.1 christos asection *asec;
2630 1.1 christos char *buffer = NULL;
2631 1.1 christos bfd_size_type largest_input_size = 0;
2632 1.1 christos unsigned i;
2633 1.1 christos unsigned long length;
2634 1.1 christos const char *error_message = NULL;
2635 1.1 christos
2636 1.1 christos if (link_info == NULL)
2637 1.1 christos return;
2638 1.3 christos
2639 1.1 christos apuinfo_list_init ();
2640 1.1 christos
2641 1.1 christos /* Read in the input sections contents. */
2642 1.1 christos for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
2643 1.1 christos {
2644 1.1 christos unsigned long datum;
2645 1.1 christos
2646 1.1 christos asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2647 1.1 christos if (asec == NULL)
2648 1.1 christos continue;
2649 1.1 christos
2650 1.1 christos error_message = _("corrupt %s section in %B");
2651 1.1 christos length = asec->size;
2652 1.1 christos if (length < 20)
2653 1.1 christos goto fail;
2654 1.1 christos
2655 1.1 christos apuinfo_set = TRUE;
2656 1.1 christos if (largest_input_size < asec->size)
2657 1.1 christos {
2658 1.1 christos if (buffer)
2659 1.1 christos free (buffer);
2660 1.1 christos largest_input_size = asec->size;
2661 1.1 christos buffer = bfd_malloc (largest_input_size);
2662 1.1 christos if (!buffer)
2663 1.1 christos return;
2664 1.1 christos }
2665 1.1 christos
2666 1.1 christos if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2667 1.1 christos || (bfd_bread (buffer, length, ibfd) != length))
2668 1.1 christos {
2669 1.1 christos error_message = _("unable to read in %s section from %B");
2670 1.1 christos goto fail;
2671 1.1 christos }
2672 1.1 christos
2673 1.1 christos /* Verify the contents of the header. Note - we have to
2674 1.1 christos extract the values this way in order to allow for a
2675 1.1 christos host whose endian-ness is different from the target. */
2676 1.1 christos datum = bfd_get_32 (ibfd, buffer);
2677 1.1 christos if (datum != sizeof APUINFO_LABEL)
2678 1.1 christos goto fail;
2679 1.1 christos
2680 1.1 christos datum = bfd_get_32 (ibfd, buffer + 8);
2681 1.1 christos if (datum != 0x2)
2682 1.1 christos goto fail;
2683 1.1 christos
2684 1.1 christos if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2685 1.1 christos goto fail;
2686 1.1 christos
2687 1.1 christos /* Get the number of bytes used for apuinfo entries. */
2688 1.1 christos datum = bfd_get_32 (ibfd, buffer + 4);
2689 1.1 christos if (datum + 20 != length)
2690 1.1 christos goto fail;
2691 1.1 christos
2692 1.1 christos /* Scan the apuinfo section, building a list of apuinfo numbers. */
2693 1.1 christos for (i = 0; i < datum; i += 4)
2694 1.1 christos apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2695 1.1 christos }
2696 1.1 christos
2697 1.1 christos error_message = NULL;
2698 1.1 christos
2699 1.1 christos if (apuinfo_set)
2700 1.1 christos {
2701 1.1 christos /* Compute the size of the output section. */
2702 1.1 christos unsigned num_entries = apuinfo_list_length ();
2703 1.1 christos
2704 1.1 christos /* Set the output section size, if it exists. */
2705 1.1 christos asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2706 1.1 christos
2707 1.1 christos if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2708 1.1 christos {
2709 1.1 christos ibfd = abfd;
2710 1.1 christos error_message = _("warning: unable to set size of %s section in %B");
2711 1.1 christos }
2712 1.1 christos }
2713 1.1 christos
2714 1.1 christos fail:
2715 1.1 christos if (buffer)
2716 1.1 christos free (buffer);
2717 1.1 christos
2718 1.1 christos if (error_message)
2719 1.1 christos (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2720 1.1 christos }
2721 1.1 christos
2722 1.1 christos /* Prevent the output section from accumulating the input sections'
2723 1.1 christos contents. We have already stored this in our linked list structure. */
2724 1.1 christos
2725 1.1 christos static bfd_boolean
2726 1.1 christos ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2727 1.1 christos struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2728 1.1 christos asection *asec,
2729 1.1 christos bfd_byte *contents ATTRIBUTE_UNUSED)
2730 1.1 christos {
2731 1.1 christos return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2732 1.1 christos }
2733 1.1 christos
2734 1.1 christos /* Finally we can generate the output section. */
2735 1.1 christos
2736 1.1 christos static void
2737 1.1 christos ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2738 1.1 christos {
2739 1.1 christos bfd_byte *buffer;
2740 1.1 christos asection *asec;
2741 1.1 christos unsigned i;
2742 1.1 christos unsigned num_entries;
2743 1.1 christos bfd_size_type length;
2744 1.1 christos
2745 1.1 christos asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2746 1.1 christos if (asec == NULL)
2747 1.1 christos return;
2748 1.1 christos
2749 1.1 christos if (!apuinfo_set)
2750 1.1 christos return;
2751 1.1 christos
2752 1.1 christos length = asec->size;
2753 1.1 christos if (length < 20)
2754 1.1 christos return;
2755 1.1 christos
2756 1.1 christos buffer = bfd_malloc (length);
2757 1.1 christos if (buffer == NULL)
2758 1.1 christos {
2759 1.1 christos (*_bfd_error_handler)
2760 1.1 christos (_("failed to allocate space for new APUinfo section."));
2761 1.1 christos return;
2762 1.1 christos }
2763 1.1 christos
2764 1.1 christos /* Create the apuinfo header. */
2765 1.1 christos num_entries = apuinfo_list_length ();
2766 1.1 christos bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2767 1.1 christos bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2768 1.1 christos bfd_put_32 (abfd, 0x2, buffer + 8);
2769 1.1 christos strcpy ((char *) buffer + 12, APUINFO_LABEL);
2770 1.1 christos
2771 1.1 christos length = 20;
2772 1.1 christos for (i = 0; i < num_entries; i++)
2773 1.1 christos {
2774 1.1 christos bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2775 1.1 christos length += 4;
2776 1.1 christos }
2777 1.1 christos
2778 1.1 christos if (length != asec->size)
2779 1.1 christos (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2780 1.1 christos
2781 1.1 christos if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2782 1.1 christos (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2783 1.1 christos
2784 1.1 christos free (buffer);
2785 1.1 christos
2786 1.1 christos apuinfo_list_finish ();
2787 1.1 christos }
2788 1.1 christos
2789 1.1 christos static bfd_boolean
2791 1.1 christos is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2792 1.1 christos {
2793 1.1 christos bfd_byte buf[GLINK_ENTRY_SIZE];
2794 1.1 christos
2795 1.1 christos if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2796 1.1 christos return FALSE;
2797 1.1 christos
2798 1.1 christos return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2799 1.1 christos && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2800 1.1 christos && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2801 1.1 christos && bfd_get_32 (abfd, buf + 12) == BCTR);
2802 1.1 christos }
2803 1.1 christos
2804 1.1 christos static bfd_boolean
2805 1.1 christos section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2806 1.1 christos {
2807 1.1 christos bfd_vma vma = *(bfd_vma *) ptr;
2808 1.1 christos return ((section->flags & SEC_ALLOC) != 0
2809 1.1 christos && section->vma <= vma
2810 1.1 christos && vma < section->vma + section->size);
2811 1.1 christos }
2812 1.1 christos
2813 1.1 christos static long
2814 1.1 christos ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2815 1.1 christos long dynsymcount, asymbol **dynsyms,
2816 1.1 christos asymbol **ret)
2817 1.1 christos {
2818 1.1 christos bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2819 1.1 christos asection *plt, *relplt, *dynamic, *glink;
2820 1.1 christos bfd_vma glink_vma = 0;
2821 1.1 christos bfd_vma resolv_vma = 0;
2822 1.1 christos bfd_vma stub_vma;
2823 1.1 christos asymbol *s;
2824 1.1 christos arelent *p;
2825 1.1 christos long count, i;
2826 1.1 christos size_t size;
2827 1.1 christos char *names;
2828 1.1 christos bfd_byte buf[4];
2829 1.1 christos
2830 1.1 christos *ret = NULL;
2831 1.1 christos
2832 1.1 christos if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2833 1.1 christos return 0;
2834 1.1 christos
2835 1.1 christos if (dynsymcount <= 0)
2836 1.1 christos return 0;
2837 1.1 christos
2838 1.1 christos relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2839 1.1 christos if (relplt == NULL)
2840 1.1 christos return 0;
2841 1.1 christos
2842 1.1 christos plt = bfd_get_section_by_name (abfd, ".plt");
2843 1.1 christos if (plt == NULL)
2844 1.1 christos return 0;
2845 1.1 christos
2846 1.1 christos /* Call common code to handle old-style executable PLTs. */
2847 1.1 christos if (elf_section_flags (plt) & SHF_EXECINSTR)
2848 1.1 christos return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2849 1.1 christos dynsymcount, dynsyms, ret);
2850 1.1 christos
2851 1.1 christos /* If this object was prelinked, the prelinker stored the address
2852 1.1 christos of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2853 1.1 christos dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2854 1.1 christos if (dynamic != NULL)
2855 1.1 christos {
2856 1.1 christos bfd_byte *dynbuf, *extdyn, *extdynend;
2857 1.1 christos size_t extdynsize;
2858 1.1 christos void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2859 1.1 christos
2860 1.1 christos if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2861 1.1 christos return -1;
2862 1.1 christos
2863 1.1 christos extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2864 1.1 christos swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2865 1.1 christos
2866 1.1 christos extdyn = dynbuf;
2867 1.1 christos extdynend = extdyn + dynamic->size;
2868 1.1 christos for (; extdyn < extdynend; extdyn += extdynsize)
2869 1.1 christos {
2870 1.1 christos Elf_Internal_Dyn dyn;
2871 1.1 christos (*swap_dyn_in) (abfd, extdyn, &dyn);
2872 1.1 christos
2873 1.1 christos if (dyn.d_tag == DT_NULL)
2874 1.1 christos break;
2875 1.1 christos
2876 1.1 christos if (dyn.d_tag == DT_PPC_GOT)
2877 1.1 christos {
2878 1.1 christos unsigned int g_o_t = dyn.d_un.d_val;
2879 1.1 christos asection *got = bfd_get_section_by_name (abfd, ".got");
2880 1.1 christos if (got != NULL
2881 1.1 christos && bfd_get_section_contents (abfd, got, buf,
2882 1.1 christos g_o_t - got->vma + 4, 4))
2883 1.1 christos glink_vma = bfd_get_32 (abfd, buf);
2884 1.1 christos break;
2885 1.1 christos }
2886 1.1 christos }
2887 1.1 christos free (dynbuf);
2888 1.1 christos }
2889 1.1 christos
2890 1.1 christos /* Otherwise we read the first plt entry. */
2891 1.1 christos if (glink_vma == 0)
2892 1.1 christos {
2893 1.1 christos if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2894 1.1 christos glink_vma = bfd_get_32 (abfd, buf);
2895 1.1 christos }
2896 1.1 christos
2897 1.1 christos if (glink_vma == 0)
2898 1.1 christos return 0;
2899 1.1 christos
2900 1.1 christos /* The .glink section usually does not survive the final
2901 1.1 christos link; search for the section (usually .text) where the
2902 1.1 christos glink stubs now reside. */
2903 1.1 christos glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2904 1.1 christos if (glink == NULL)
2905 1.1 christos return 0;
2906 1.1 christos
2907 1.1 christos /* Determine glink PLT resolver by reading the relative branch
2908 1.1 christos from the first glink stub. */
2909 1.1 christos if (bfd_get_section_contents (abfd, glink, buf,
2910 1.1 christos glink_vma - glink->vma, 4))
2911 1.1 christos {
2912 1.1 christos unsigned int insn = bfd_get_32 (abfd, buf);
2913 1.1 christos
2914 1.1 christos /* The first glink stub may either branch to the resolver ... */
2915 1.1 christos insn ^= B;
2916 1.1 christos if ((insn & ~0x3fffffc) == 0)
2917 1.1 christos resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2918 1.1 christos
2919 1.1 christos /* ... or fall through a bunch of NOPs. */
2920 1.1 christos else if ((insn ^ B ^ NOP) == 0)
2921 1.1 christos for (i = 4;
2922 1.1 christos bfd_get_section_contents (abfd, glink, buf,
2923 1.1 christos glink_vma - glink->vma + i, 4);
2924 1.1 christos i += 4)
2925 1.1 christos if (bfd_get_32 (abfd, buf) != NOP)
2926 1.1 christos {
2927 1.1 christos resolv_vma = glink_vma + i;
2928 1.1 christos break;
2929 1.1 christos }
2930 1.1 christos }
2931 1.1 christos
2932 1.1 christos count = relplt->size / sizeof (Elf32_External_Rela);
2933 1.1 christos /* If the stubs are those for -shared/-pie then we might have
2934 1.1 christos multiple stubs for each plt entry. If that is the case then
2935 1.1 christos there is no way to associate stubs with their plt entries short
2936 1.1 christos of figuring out the GOT pointer value used in the stub. */
2937 1.1 christos if (!is_nonpic_glink_stub (abfd, glink,
2938 1.1 christos glink_vma - GLINK_ENTRY_SIZE - glink->vma))
2939 1.1 christos return 0;
2940 1.1 christos
2941 1.1 christos slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2942 1.1 christos if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2943 1.1 christos return -1;
2944 1.1 christos
2945 1.1 christos size = count * sizeof (asymbol);
2946 1.1 christos p = relplt->relocation;
2947 1.1 christos for (i = 0; i < count; i++, p++)
2948 1.1 christos {
2949 1.1 christos size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2950 1.1 christos if (p->addend != 0)
2951 1.1 christos size += sizeof ("+0x") - 1 + 8;
2952 1.1 christos }
2953 1.1 christos
2954 1.1 christos size += sizeof (asymbol) + sizeof ("__glink");
2955 1.1 christos
2956 1.1 christos if (resolv_vma)
2957 1.1 christos size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2958 1.5 christos
2959 1.1 christos s = *ret = bfd_malloc (size);
2960 1.5 christos if (s == NULL)
2961 1.5 christos return -1;
2962 1.1 christos
2963 1.1 christos stub_vma = glink_vma;
2964 1.1 christos names = (char *) (s + count + 1 + (resolv_vma != 0));
2965 1.1 christos p = relplt->relocation + count - 1;
2966 1.1 christos for (i = 0; i < count; i++)
2967 1.1 christos {
2968 1.1 christos size_t len;
2969 1.1 christos
2970 1.1 christos *s = **p->sym_ptr_ptr;
2971 1.1 christos /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2972 1.5 christos we are defining a symbol, ensure one of them is set. */
2973 1.5 christos if ((s->flags & BSF_LOCAL) == 0)
2974 1.5 christos s->flags |= BSF_GLOBAL;
2975 1.1 christos s->flags |= BSF_SYNTHETIC;
2976 1.1 christos s->section = glink;
2977 1.1 christos stub_vma -= 16;
2978 1.1 christos if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
2979 1.1 christos stub_vma -= 32;
2980 1.1 christos s->value = stub_vma - glink->vma;
2981 1.1 christos s->name = names;
2982 1.1 christos s->udata.p = NULL;
2983 1.1 christos len = strlen ((*p->sym_ptr_ptr)->name);
2984 1.1 christos memcpy (names, (*p->sym_ptr_ptr)->name, len);
2985 1.1 christos names += len;
2986 1.1 christos if (p->addend != 0)
2987 1.1 christos {
2988 1.1 christos memcpy (names, "+0x", sizeof ("+0x") - 1);
2989 1.1 christos names += sizeof ("+0x") - 1;
2990 1.1 christos bfd_sprintf_vma (abfd, names, p->addend);
2991 1.5 christos names += strlen (names);
2992 1.1 christos }
2993 1.1 christos memcpy (names, "@plt", sizeof ("@plt"));
2994 1.1 christos names += sizeof ("@plt");
2995 1.1 christos ++s;
2996 1.1 christos --p;
2997 1.1 christos }
2998 1.1 christos
2999 1.1 christos /* Add a symbol at the start of the glink branch table. */
3000 1.1 christos memset (s, 0, sizeof *s);
3001 1.1 christos s->the_bfd = abfd;
3002 1.1 christos s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3003 1.1 christos s->section = glink;
3004 1.1 christos s->value = glink_vma - glink->vma;
3005 1.1 christos s->name = names;
3006 1.1 christos memcpy (names, "__glink", sizeof ("__glink"));
3007 1.1 christos names += sizeof ("__glink");
3008 1.1 christos s++;
3009 1.1 christos count++;
3010 1.1 christos
3011 1.1 christos if (resolv_vma)
3012 1.1 christos {
3013 1.1 christos /* Add a symbol for the glink PLT resolver. */
3014 1.1 christos memset (s, 0, sizeof *s);
3015 1.1 christos s->the_bfd = abfd;
3016 1.1 christos s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3017 1.1 christos s->section = glink;
3018 1.1 christos s->value = resolv_vma - glink->vma;
3019 1.1 christos s->name = names;
3020 1.1 christos memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3021 1.1 christos names += sizeof ("__glink_PLTresolve");
3022 1.1 christos s++;
3023 1.1 christos count++;
3024 1.1 christos }
3025 1.1 christos
3026 1.1 christos return count;
3027 1.1 christos }
3028 1.1 christos
3029 1.1 christos /* The following functions are specific to the ELF linker, while
3031 1.1 christos functions above are used generally. They appear in this file more
3032 1.1 christos or less in the order in which they are called. eg.
3033 1.1 christos ppc_elf_check_relocs is called early in the link process,
3034 1.1 christos ppc_elf_finish_dynamic_sections is one of the last functions
3035 1.1 christos called. */
3036 1.1 christos
3037 1.1 christos /* Track PLT entries needed for a given symbol. We might need more
3038 1.1 christos than one glink entry per symbol when generating a pic binary. */
3039 1.1 christos struct plt_entry
3040 1.1 christos {
3041 1.1 christos struct plt_entry *next;
3042 1.1 christos
3043 1.1 christos /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3044 1.1 christos This field stores the offset into .got2 used to initialise the
3045 1.1 christos GOT pointer reg. It will always be at least 32768. (Current
3046 1.1 christos gcc always uses an offset of 32768, but ld -r will pack .got2
3047 1.1 christos sections together resulting in larger offsets). */
3048 1.1 christos bfd_vma addend;
3049 1.1 christos
3050 1.1 christos /* The .got2 section. */
3051 1.1 christos asection *sec;
3052 1.1 christos
3053 1.1 christos /* PLT refcount or offset. */
3054 1.1 christos union
3055 1.1 christos {
3056 1.1 christos bfd_signed_vma refcount;
3057 1.1 christos bfd_vma offset;
3058 1.1 christos } plt;
3059 1.1 christos
3060 1.1 christos /* .glink stub offset. */
3061 1.1 christos bfd_vma glink_offset;
3062 1.1 christos };
3063 1.1 christos
3064 1.1 christos /* Of those relocs that might be copied as dynamic relocs, this function
3065 1.1 christos selects those that must be copied when linking a shared library,
3066 1.1 christos even when the symbol is local. */
3067 1.1 christos
3068 1.1 christos static int
3069 1.1 christos must_be_dyn_reloc (struct bfd_link_info *info,
3070 1.1 christos enum elf_ppc_reloc_type r_type)
3071 1.1 christos {
3072 1.1 christos switch (r_type)
3073 1.1 christos {
3074 1.1 christos default:
3075 1.1 christos return 1;
3076 1.1 christos
3077 1.1 christos case R_PPC_REL24:
3078 1.1 christos case R_PPC_REL14:
3079 1.1 christos case R_PPC_REL14_BRTAKEN:
3080 1.1 christos case R_PPC_REL14_BRNTAKEN:
3081 1.1 christos case R_PPC_REL32:
3082 1.1 christos return 0;
3083 1.1 christos
3084 1.1 christos case R_PPC_TPREL32:
3085 1.1 christos case R_PPC_TPREL16:
3086 1.1 christos case R_PPC_TPREL16_LO:
3087 1.1 christos case R_PPC_TPREL16_HI:
3088 1.1 christos case R_PPC_TPREL16_HA:
3089 1.1 christos return !info->executable;
3090 1.1 christos }
3091 1.1 christos }
3092 1.1 christos
3093 1.1 christos /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3094 1.1 christos copying dynamic variables from a shared lib into an app's dynbss
3095 1.1 christos section, and instead use a dynamic relocation to point into the
3096 1.1 christos shared lib. */
3097 1.1 christos #define ELIMINATE_COPY_RELOCS 1
3098 1.1 christos
3099 1.1 christos /* Used to track dynamic relocations for local symbols. */
3100 1.1 christos struct ppc_dyn_relocs
3101 1.1 christos {
3102 1.1 christos struct ppc_dyn_relocs *next;
3103 1.1 christos
3104 1.1 christos /* The input section of the reloc. */
3105 1.1 christos asection *sec;
3106 1.1 christos
3107 1.1 christos /* Total number of relocs copied for the input section. */
3108 1.1 christos unsigned int count : 31;
3109 1.1 christos
3110 1.1 christos /* Whether this entry is for STT_GNU_IFUNC symbols. */
3111 1.1 christos unsigned int ifunc : 1;
3112 1.1 christos };
3113 1.1 christos
3114 1.1 christos /* PPC ELF linker hash entry. */
3115 1.1 christos
3116 1.1 christos struct ppc_elf_link_hash_entry
3117 1.1 christos {
3118 1.1 christos struct elf_link_hash_entry elf;
3119 1.1 christos
3120 1.1 christos /* If this symbol is used in the linker created sections, the processor
3121 1.1 christos specific backend uses this field to map the field into the offset
3122 1.1 christos from the beginning of the section. */
3123 1.1 christos elf_linker_section_pointers_t *linker_section_pointer;
3124 1.1 christos
3125 1.1 christos /* Track dynamic relocs copied for this symbol. */
3126 1.1 christos struct elf_dyn_relocs *dyn_relocs;
3127 1.1 christos
3128 1.1 christos /* Contexts in which symbol is used in the GOT (or TOC).
3129 1.1 christos TLS_GD .. TLS_TLS bits are or'd into the mask as the
3130 1.1 christos corresponding relocs are encountered during check_relocs.
3131 1.1 christos tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3132 1.1 christos indicate the corresponding GOT entry type is not needed. */
3133 1.1 christos #define TLS_GD 1 /* GD reloc. */
3134 1.1 christos #define TLS_LD 2 /* LD reloc. */
3135 1.1 christos #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3136 1.1 christos #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3137 1.1 christos #define TLS_TLS 16 /* Any TLS reloc. */
3138 1.5 christos #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3139 1.5 christos #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3140 1.5 christos char tls_mask;
3141 1.5 christos
3142 1.5 christos /* Nonzero if we have seen a small data relocation referring to this
3143 1.1 christos symbol. */
3144 1.1 christos unsigned char has_sda_refs : 1;
3145 1.1 christos
3146 1.1 christos /* Flag use of given relocations. */
3147 1.1 christos unsigned char has_addr16_ha : 1;
3148 1.1 christos unsigned char has_addr16_lo : 1;
3149 1.1 christos };
3150 1.1 christos
3151 1.1 christos #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3152 1.1 christos
3153 1.3 christos /* PPC ELF linker hash table. */
3154 1.3 christos
3155 1.3 christos struct ppc_elf_link_hash_table
3156 1.1 christos {
3157 1.1 christos struct elf_link_hash_table elf;
3158 1.1 christos
3159 1.1 christos /* Various options passed from the linker. */
3160 1.1 christos struct ppc_elf_params *params;
3161 1.1 christos
3162 1.1 christos /* Short-cuts to get to dynamic linker sections. */
3163 1.1 christos asection *got;
3164 1.1 christos asection *relgot;
3165 1.1 christos asection *glink;
3166 1.1 christos asection *plt;
3167 1.1 christos asection *relplt;
3168 1.1 christos asection *iplt;
3169 1.1 christos asection *reliplt;
3170 1.1 christos asection *dynbss;
3171 1.1 christos asection *relbss;
3172 1.1 christos asection *dynsbss;
3173 1.1 christos asection *relsbss;
3174 1.1 christos elf_linker_section_t sdata[2];
3175 1.1 christos asection *sbss;
3176 1.1 christos asection *glink_eh_frame;
3177 1.1 christos
3178 1.1 christos /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3179 1.1 christos asection *srelplt2;
3180 1.1 christos
3181 1.1 christos /* The .got.plt section (VxWorks only)*/
3182 1.1 christos asection *sgotplt;
3183 1.1 christos
3184 1.1 christos /* Shortcut to __tls_get_addr. */
3185 1.1 christos struct elf_link_hash_entry *tls_get_addr;
3186 1.1 christos
3187 1.1 christos /* The bfd that forced an old-style PLT. */
3188 1.1 christos bfd *old_bfd;
3189 1.1 christos
3190 1.1 christos /* TLS local dynamic got entry handling. */
3191 1.1 christos union {
3192 1.1 christos bfd_signed_vma refcount;
3193 1.1 christos bfd_vma offset;
3194 1.1 christos } tlsld_got;
3195 1.1 christos
3196 1.1 christos /* Offset of branch table to PltResolve function in glink. */
3197 1.1 christos bfd_vma glink_pltresolve;
3198 1.1 christos
3199 1.1 christos /* Size of reserved GOT entries. */
3200 1.1 christos unsigned int got_header_size;
3201 1.1 christos /* Non-zero if allocating the header left a gap. */
3202 1.1 christos unsigned int got_gap;
3203 1.1 christos
3204 1.1 christos /* The type of PLT we have chosen to use. */
3205 1.1 christos enum ppc_elf_plt_type plt_type;
3206 1.1 christos
3207 1.1 christos /* True if the target system is VxWorks. */
3208 1.1 christos unsigned int is_vxworks:1;
3209 1.1 christos
3210 1.1 christos /* The size of PLT entries. */
3211 1.1 christos int plt_entry_size;
3212 1.1 christos /* The distance between adjacent PLT slots. */
3213 1.1 christos int plt_slot_size;
3214 1.1 christos /* The size of the first PLT entry. */
3215 1.1 christos int plt_initial_entry_size;
3216 1.1 christos
3217 1.1 christos /* Small local sym cache. */
3218 1.1 christos struct sym_cache sym_cache;
3219 1.1 christos };
3220 1.1 christos
3221 1.1 christos /* Rename some of the generic section flags to better document how they
3222 1.1 christos are used for ppc32. The flags are only valid for ppc32 elf objects. */
3223 1.1 christos
3224 1.1 christos /* Nonzero if this section has TLS related relocations. */
3225 1.1 christos #define has_tls_reloc sec_flg0
3226 1.1 christos
3227 1.1 christos /* Nonzero if this section has a call to __tls_get_addr. */
3228 1.1 christos #define has_tls_get_addr_call sec_flg1
3229 1.1 christos
3230 1.1 christos /* Get the PPC ELF linker hash table from a link_info structure. */
3231 1.1 christos
3232 1.1 christos #define ppc_elf_hash_table(p) \
3233 1.1 christos (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3234 1.1 christos == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3235 1.1 christos
3236 1.1 christos /* Create an entry in a PPC ELF linker hash table. */
3237 1.1 christos
3238 1.1 christos static struct bfd_hash_entry *
3239 1.1 christos ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3240 1.1 christos struct bfd_hash_table *table,
3241 1.1 christos const char *string)
3242 1.1 christos {
3243 1.1 christos /* Allocate the structure if it has not already been allocated by a
3244 1.1 christos subclass. */
3245 1.1 christos if (entry == NULL)
3246 1.1 christos {
3247 1.1 christos entry = bfd_hash_allocate (table,
3248 1.1 christos sizeof (struct ppc_elf_link_hash_entry));
3249 1.1 christos if (entry == NULL)
3250 1.1 christos return entry;
3251 1.1 christos }
3252 1.1 christos
3253 1.1 christos /* Call the allocation method of the superclass. */
3254 1.1 christos entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3255 1.1 christos if (entry != NULL)
3256 1.1 christos {
3257 1.1 christos ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3258 1.1 christos ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3259 1.1 christos ppc_elf_hash_entry (entry)->tls_mask = 0;
3260 1.1 christos ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3261 1.1 christos }
3262 1.1 christos
3263 1.1 christos return entry;
3264 1.1 christos }
3265 1.1 christos
3266 1.5 christos /* Create a PPC ELF linker hash table. */
3267 1.1 christos
3268 1.1 christos static struct bfd_link_hash_table *
3269 1.1 christos ppc_elf_link_hash_table_create (bfd *abfd)
3270 1.1 christos {
3271 1.1 christos struct ppc_elf_link_hash_table *ret;
3272 1.1 christos static struct ppc_elf_params default_params = { PLT_OLD, 0, 1, 0, 0, 12, 0 };
3273 1.1 christos
3274 1.1 christos ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3275 1.1 christos if (ret == NULL)
3276 1.1 christos return NULL;
3277 1.1 christos
3278 1.1 christos if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3279 1.1 christos ppc_elf_link_hash_newfunc,
3280 1.1 christos sizeof (struct ppc_elf_link_hash_entry),
3281 1.1 christos PPC32_ELF_DATA))
3282 1.1 christos {
3283 1.1 christos free (ret);
3284 1.1 christos return NULL;
3285 1.1 christos }
3286 1.3 christos
3287 1.3 christos ret->elf.init_plt_refcount.refcount = 0;
3288 1.1 christos ret->elf.init_plt_refcount.glist = NULL;
3289 1.1 christos ret->elf.init_plt_offset.offset = 0;
3290 1.1 christos ret->elf.init_plt_offset.glist = NULL;
3291 1.1 christos
3292 1.1 christos ret->params = &default_params;
3293 1.1 christos
3294 1.1 christos ret->sdata[0].name = ".sdata";
3295 1.1 christos ret->sdata[0].sym_name = "_SDA_BASE_";
3296 1.1 christos ret->sdata[0].bss_name = ".sbss";
3297 1.1 christos
3298 1.1 christos ret->sdata[1].name = ".sdata2";
3299 1.1 christos ret->sdata[1].sym_name = "_SDA2_BASE_";
3300 1.1 christos ret->sdata[1].bss_name = ".sbss2";
3301 1.1 christos
3302 1.1 christos ret->plt_entry_size = 12;
3303 1.3 christos ret->plt_slot_size = 8;
3304 1.3 christos ret->plt_initial_entry_size = 72;
3305 1.3 christos
3306 1.3 christos return &ret->elf.root;
3307 1.3 christos }
3308 1.3 christos
3309 1.3 christos /* Hook linker params into hash table. */
3310 1.3 christos
3311 1.3 christos void
3312 1.3 christos ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3313 1.3 christos {
3314 1.1 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3315 1.1 christos
3316 1.1 christos if (htab)
3317 1.1 christos htab->params = params;
3318 1.1 christos }
3319 1.1 christos
3320 1.1 christos /* Create .got and the related sections. */
3321 1.1 christos
3322 1.1 christos static bfd_boolean
3323 1.1 christos ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3324 1.1 christos {
3325 1.1 christos struct ppc_elf_link_hash_table *htab;
3326 1.1 christos asection *s;
3327 1.1 christos flagword flags;
3328 1.1 christos
3329 1.1 christos if (!_bfd_elf_create_got_section (abfd, info))
3330 1.1 christos return FALSE;
3331 1.1 christos
3332 1.1 christos htab = ppc_elf_hash_table (info);
3333 1.1 christos htab->got = s = bfd_get_linker_section (abfd, ".got");
3334 1.1 christos if (s == NULL)
3335 1.1 christos abort ();
3336 1.1 christos
3337 1.1 christos if (htab->is_vxworks)
3338 1.1 christos {
3339 1.1 christos htab->sgotplt = bfd_get_linker_section (abfd, ".got.plt");
3340 1.1 christos if (!htab->sgotplt)
3341 1.1 christos abort ();
3342 1.1 christos }
3343 1.1 christos else
3344 1.1 christos {
3345 1.1 christos /* The powerpc .got has a blrl instruction in it. Mark it
3346 1.1 christos executable. */
3347 1.1 christos flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3348 1.1 christos | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3349 1.1 christos if (!bfd_set_section_flags (abfd, s, flags))
3350 1.1 christos return FALSE;
3351 1.1 christos }
3352 1.1 christos
3353 1.1 christos htab->relgot = bfd_get_linker_section (abfd, ".rela.got");
3354 1.3 christos if (!htab->relgot)
3355 1.3 christos abort ();
3356 1.3 christos
3357 1.3 christos return TRUE;
3358 1.3 christos }
3359 1.3 christos
3360 1.3 christos /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3361 1.3 christos R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3362 1.3 christos and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3363 1.3 christos
3364 1.3 christos static bfd_boolean
3365 1.3 christos ppc_elf_create_linker_section (bfd *abfd,
3366 1.3 christos struct bfd_link_info *info,
3367 1.3 christos flagword flags,
3368 1.3 christos elf_linker_section_t *lsect)
3369 1.3 christos {
3370 1.3 christos asection *s;
3371 1.3 christos
3372 1.3 christos flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3373 1.3 christos | SEC_LINKER_CREATED);
3374 1.3 christos
3375 1.3 christos s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3376 1.3 christos if (s == NULL)
3377 1.3 christos return FALSE;
3378 1.3 christos lsect->section = s;
3379 1.3 christos
3380 1.3 christos /* Define the sym on the first section of this name. */
3381 1.3 christos s = bfd_get_section_by_name (abfd, lsect->name);
3382 1.3 christos
3383 1.3 christos lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3384 1.1 christos if (lsect->sym == NULL)
3385 1.1 christos return FALSE;
3386 1.1 christos lsect->sym->root.u.def.value = 0x8000;
3387 1.1 christos return TRUE;
3388 1.1 christos }
3389 1.1 christos
3390 1.1 christos static bfd_boolean
3391 1.1 christos ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3392 1.1 christos {
3393 1.1 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3394 1.1 christos asection *s;
3395 1.1 christos flagword flags;
3396 1.3 christos
3397 1.3 christos flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3398 1.1 christos | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3399 1.1 christos s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3400 1.1 christos htab->glink = s;
3401 1.1 christos if (s == NULL
3402 1.1 christos || !bfd_set_section_alignment (abfd, s,
3403 1.1 christos htab->params->ppc476_workaround ? 6 : 4))
3404 1.1 christos return FALSE;
3405 1.1 christos
3406 1.1 christos if (!info->no_ld_generated_unwind_info)
3407 1.1 christos {
3408 1.1 christos flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3409 1.1 christos | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3410 1.1 christos s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3411 1.1 christos htab->glink_eh_frame = s;
3412 1.1 christos if (s == NULL
3413 1.1 christos || !bfd_set_section_alignment (abfd, s, 2))
3414 1.1 christos return FALSE;
3415 1.1 christos }
3416 1.1 christos
3417 1.1 christos flags = SEC_ALLOC | SEC_LINKER_CREATED;
3418 1.1 christos s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3419 1.1 christos htab->iplt = s;
3420 1.1 christos if (s == NULL
3421 1.1 christos || !bfd_set_section_alignment (abfd, s, 4))
3422 1.1 christos return FALSE;
3423 1.1 christos
3424 1.1 christos flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3425 1.3 christos | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3426 1.3 christos s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3427 1.3 christos htab->reliplt = s;
3428 1.3 christos if (s == NULL
3429 1.3 christos || ! bfd_set_section_alignment (abfd, s, 2))
3430 1.3 christos return FALSE;
3431 1.3 christos
3432 1.3 christos if (!ppc_elf_create_linker_section (abfd, info, 0,
3433 1.3 christos &htab->sdata[0]))
3434 1.1 christos return FALSE;
3435 1.1 christos
3436 1.1 christos if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3437 1.1 christos &htab->sdata[1]))
3438 1.1 christos return FALSE;
3439 1.1 christos
3440 1.1 christos return TRUE;
3441 1.1 christos }
3442 1.1 christos
3443 1.1 christos /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3444 1.1 christos to output sections (just like _bfd_elf_create_dynamic_sections has
3445 1.1 christos to create .dynbss and .rela.bss). */
3446 1.1 christos
3447 1.1 christos static bfd_boolean
3448 1.1 christos ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3449 1.1 christos {
3450 1.1 christos struct ppc_elf_link_hash_table *htab;
3451 1.1 christos asection *s;
3452 1.1 christos flagword flags;
3453 1.1 christos
3454 1.1 christos htab = ppc_elf_hash_table (info);
3455 1.1 christos
3456 1.1 christos if (htab->got == NULL
3457 1.1 christos && !ppc_elf_create_got (abfd, info))
3458 1.1 christos return FALSE;
3459 1.1 christos
3460 1.1 christos if (!_bfd_elf_create_dynamic_sections (abfd, info))
3461 1.1 christos return FALSE;
3462 1.1 christos
3463 1.1 christos if (htab->glink == NULL
3464 1.1 christos && !ppc_elf_create_glink (abfd, info))
3465 1.1 christos return FALSE;
3466 1.1 christos
3467 1.1 christos htab->dynbss = bfd_get_linker_section (abfd, ".dynbss");
3468 1.1 christos s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3469 1.1 christos SEC_ALLOC | SEC_LINKER_CREATED);
3470 1.1 christos htab->dynsbss = s;
3471 1.1 christos if (s == NULL)
3472 1.1 christos return FALSE;
3473 1.1 christos
3474 1.1 christos if (! info->shared)
3475 1.1 christos {
3476 1.1 christos htab->relbss = bfd_get_linker_section (abfd, ".rela.bss");
3477 1.1 christos flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3478 1.1 christos | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3479 1.1 christos s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3480 1.1 christos htab->relsbss = s;
3481 1.1 christos if (s == NULL
3482 1.1 christos || ! bfd_set_section_alignment (abfd, s, 2))
3483 1.1 christos return FALSE;
3484 1.1 christos }
3485 1.1 christos
3486 1.1 christos if (htab->is_vxworks
3487 1.1 christos && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3488 1.1 christos return FALSE;
3489 1.1 christos
3490 1.1 christos htab->relplt = bfd_get_linker_section (abfd, ".rela.plt");
3491 1.1 christos htab->plt = s = bfd_get_linker_section (abfd, ".plt");
3492 1.1 christos if (s == NULL)
3493 1.1 christos abort ();
3494 1.1 christos
3495 1.1 christos flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3496 1.1 christos if (htab->plt_type == PLT_VXWORKS)
3497 1.1 christos /* The VxWorks PLT is a loaded section with contents. */
3498 1.1 christos flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3499 1.1 christos return bfd_set_section_flags (abfd, s, flags);
3500 1.1 christos }
3501 1.1 christos
3502 1.1 christos /* Copy the extra info we tack onto an elf_link_hash_entry. */
3503 1.1 christos
3504 1.1 christos static void
3505 1.1 christos ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3506 1.1 christos struct elf_link_hash_entry *dir,
3507 1.1 christos struct elf_link_hash_entry *ind)
3508 1.1 christos {
3509 1.1 christos struct ppc_elf_link_hash_entry *edir, *eind;
3510 1.1 christos
3511 1.1 christos edir = (struct ppc_elf_link_hash_entry *) dir;
3512 1.1 christos eind = (struct ppc_elf_link_hash_entry *) ind;
3513 1.1 christos
3514 1.1 christos edir->tls_mask |= eind->tls_mask;
3515 1.1 christos edir->has_sda_refs |= eind->has_sda_refs;
3516 1.1 christos
3517 1.1 christos /* If called to transfer flags for a weakdef during processing
3518 1.1 christos of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3519 1.1 christos We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3520 1.1 christos if (!(ELIMINATE_COPY_RELOCS
3521 1.1 christos && eind->elf.root.type != bfd_link_hash_indirect
3522 1.1 christos && edir->elf.dynamic_adjusted))
3523 1.1 christos edir->elf.non_got_ref |= eind->elf.non_got_ref;
3524 1.1 christos
3525 1.1 christos edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3526 1.1 christos edir->elf.ref_regular |= eind->elf.ref_regular;
3527 1.1 christos edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3528 1.1 christos edir->elf.needs_plt |= eind->elf.needs_plt;
3529 1.1 christos edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3530 1.1 christos
3531 1.1 christos if (eind->dyn_relocs != NULL)
3532 1.1 christos {
3533 1.1 christos if (edir->dyn_relocs != NULL)
3534 1.1 christos {
3535 1.1 christos struct elf_dyn_relocs **pp;
3536 1.1 christos struct elf_dyn_relocs *p;
3537 1.1 christos
3538 1.1 christos /* Add reloc counts against the indirect sym to the direct sym
3539 1.1 christos list. Merge any entries against the same section. */
3540 1.1 christos for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3541 1.1 christos {
3542 1.1 christos struct elf_dyn_relocs *q;
3543 1.1 christos
3544 1.1 christos for (q = edir->dyn_relocs; q != NULL; q = q->next)
3545 1.1 christos if (q->sec == p->sec)
3546 1.1 christos {
3547 1.1 christos q->pc_count += p->pc_count;
3548 1.1 christos q->count += p->count;
3549 1.1 christos *pp = p->next;
3550 1.1 christos break;
3551 1.1 christos }
3552 1.1 christos if (q == NULL)
3553 1.1 christos pp = &p->next;
3554 1.1 christos }
3555 1.1 christos *pp = edir->dyn_relocs;
3556 1.1 christos }
3557 1.1 christos
3558 1.1 christos edir->dyn_relocs = eind->dyn_relocs;
3559 1.1 christos eind->dyn_relocs = NULL;
3560 1.1 christos }
3561 1.1 christos
3562 1.1 christos /* If we were called to copy over info for a weak sym, that's all.
3563 1.1 christos You might think dyn_relocs need not be copied over; After all,
3564 1.1 christos both syms will be dynamic or both non-dynamic so we're just
3565 1.1 christos moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3566 1.1 christos code in ppc_elf_adjust_dynamic_symbol needs to check for
3567 1.1 christos dyn_relocs in read-only sections, and it does so on what is the
3568 1.1 christos DIR sym here. */
3569 1.1 christos if (eind->elf.root.type != bfd_link_hash_indirect)
3570 1.1 christos return;
3571 1.1 christos
3572 1.1 christos /* Copy over the GOT refcount entries that we may have already seen to
3573 1.1 christos the symbol which just became indirect. */
3574 1.1 christos edir->elf.got.refcount += eind->elf.got.refcount;
3575 1.1 christos eind->elf.got.refcount = 0;
3576 1.1 christos
3577 1.1 christos /* And plt entries. */
3578 1.1 christos if (eind->elf.plt.plist != NULL)
3579 1.1 christos {
3580 1.1 christos if (edir->elf.plt.plist != NULL)
3581 1.1 christos {
3582 1.1 christos struct plt_entry **entp;
3583 1.1 christos struct plt_entry *ent;
3584 1.1 christos
3585 1.1 christos for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3586 1.1 christos {
3587 1.1 christos struct plt_entry *dent;
3588 1.1 christos
3589 1.1 christos for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3590 1.1 christos if (dent->sec == ent->sec && dent->addend == ent->addend)
3591 1.1 christos {
3592 1.1 christos dent->plt.refcount += ent->plt.refcount;
3593 1.1 christos *entp = ent->next;
3594 1.1 christos break;
3595 1.1 christos }
3596 1.1 christos if (dent == NULL)
3597 1.1 christos entp = &ent->next;
3598 1.1 christos }
3599 1.1 christos *entp = edir->elf.plt.plist;
3600 1.1 christos }
3601 1.1 christos
3602 1.1 christos edir->elf.plt.plist = eind->elf.plt.plist;
3603 1.1 christos eind->elf.plt.plist = NULL;
3604 1.1 christos }
3605 1.1 christos
3606 1.1 christos if (eind->elf.dynindx != -1)
3607 1.1 christos {
3608 1.1 christos if (edir->elf.dynindx != -1)
3609 1.1 christos _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3610 1.1 christos edir->elf.dynstr_index);
3611 1.1 christos edir->elf.dynindx = eind->elf.dynindx;
3612 1.1 christos edir->elf.dynstr_index = eind->elf.dynstr_index;
3613 1.1 christos eind->elf.dynindx = -1;
3614 1.1 christos eind->elf.dynstr_index = 0;
3615 1.1 christos }
3616 1.1 christos }
3617 1.1 christos
3618 1.1 christos /* Hook called by the linker routine which adds symbols from an object
3619 1.1 christos file. We use it to put .comm items in .sbss, and not .bss. */
3620 1.1 christos
3621 1.1 christos static bfd_boolean
3622 1.1 christos ppc_elf_add_symbol_hook (bfd *abfd,
3623 1.1 christos struct bfd_link_info *info,
3624 1.1 christos Elf_Internal_Sym *sym,
3625 1.1 christos const char **namep ATTRIBUTE_UNUSED,
3626 1.1 christos flagword *flagsp ATTRIBUTE_UNUSED,
3627 1.1 christos asection **secp,
3628 1.1 christos bfd_vma *valp)
3629 1.1 christos {
3630 1.1 christos if (sym->st_shndx == SHN_COMMON
3631 1.1 christos && !info->relocatable
3632 1.1 christos && is_ppc_elf (info->output_bfd)
3633 1.1 christos && sym->st_size <= elf_gp_size (abfd))
3634 1.1 christos {
3635 1.1 christos /* Common symbols less than or equal to -G nn bytes are automatically
3636 1.1 christos put into .sbss. */
3637 1.1 christos struct ppc_elf_link_hash_table *htab;
3638 1.1 christos
3639 1.1 christos htab = ppc_elf_hash_table (info);
3640 1.1 christos if (htab->sbss == NULL)
3641 1.1 christos {
3642 1.1 christos flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3643 1.1 christos
3644 1.1 christos if (!htab->elf.dynobj)
3645 1.1 christos htab->elf.dynobj = abfd;
3646 1.1 christos
3647 1.1 christos htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3648 1.1 christos ".sbss",
3649 1.1 christos flags);
3650 1.1 christos if (htab->sbss == NULL)
3651 1.1 christos return FALSE;
3652 1.3 christos }
3653 1.3 christos
3654 1.3 christos *secp = htab->sbss;
3655 1.3 christos *valp = sym->st_size;
3656 1.1 christos }
3657 1.1 christos
3658 1.1 christos if ((ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3659 1.1 christos || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)
3660 1.1 christos && (abfd->flags & DYNAMIC) == 0
3661 1.1 christos && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
3662 1.1 christos elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
3663 1.1 christos
3664 1.1 christos return TRUE;
3665 1.1 christos }
3666 1.1 christos
3667 1.1 christos /* Find a linker generated pointer with a given addend and type. */
3669 1.1 christos
3670 1.1 christos static elf_linker_section_pointers_t *
3671 1.1 christos elf_find_pointer_linker_section
3672 1.1 christos (elf_linker_section_pointers_t *linker_pointers,
3673 1.1 christos bfd_vma addend,
3674 1.1 christos elf_linker_section_t *lsect)
3675 1.1 christos {
3676 1.1 christos for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3677 1.1 christos if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3678 1.1 christos return linker_pointers;
3679 1.3 christos
3680 1.3 christos return NULL;
3681 1.3 christos }
3682 1.3 christos
3683 1.1 christos /* Allocate a pointer to live in a linker created section. */
3684 1.1 christos
3685 1.1 christos static bfd_boolean
3686 1.1 christos elf_allocate_pointer_linker_section (bfd *abfd,
3687 1.1 christos elf_linker_section_t *lsect,
3688 1.1 christos struct elf_link_hash_entry *h,
3689 1.1 christos const Elf_Internal_Rela *rel)
3690 1.1 christos {
3691 1.1 christos elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3692 1.1 christos elf_linker_section_pointers_t *linker_section_ptr;
3693 1.1 christos unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3694 1.1 christos bfd_size_type amt;
3695 1.1 christos
3696 1.1 christos BFD_ASSERT (lsect != NULL);
3697 1.1 christos
3698 1.1 christos /* Is this a global symbol? */
3699 1.1 christos if (h != NULL)
3700 1.1 christos {
3701 1.1 christos struct ppc_elf_link_hash_entry *eh;
3702 1.1 christos
3703 1.1 christos /* Has this symbol already been allocated? If so, our work is done. */
3704 1.1 christos eh = (struct ppc_elf_link_hash_entry *) h;
3705 1.1 christos if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3706 1.1 christos rel->r_addend,
3707 1.1 christos lsect))
3708 1.1 christos return TRUE;
3709 1.1 christos
3710 1.1 christos ptr_linker_section_ptr = &eh->linker_section_pointer;
3711 1.1 christos }
3712 1.1 christos else
3713 1.1 christos {
3714 1.1 christos BFD_ASSERT (is_ppc_elf (abfd));
3715 1.1 christos
3716 1.1 christos /* Allocation of a pointer to a local symbol. */
3717 1.1 christos elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3718 1.1 christos
3719 1.1 christos /* Allocate a table to hold the local symbols if first time. */
3720 1.1 christos if (!ptr)
3721 1.1 christos {
3722 1.1 christos unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3723 1.1 christos
3724 1.1 christos amt = num_symbols;
3725 1.1 christos amt *= sizeof (elf_linker_section_pointers_t *);
3726 1.1 christos ptr = bfd_zalloc (abfd, amt);
3727 1.1 christos
3728 1.1 christos if (!ptr)
3729 1.1 christos return FALSE;
3730 1.1 christos
3731 1.1 christos elf_local_ptr_offsets (abfd) = ptr;
3732 1.1 christos }
3733 1.1 christos
3734 1.1 christos /* Has this symbol already been allocated? If so, our work is done. */
3735 1.1 christos if (elf_find_pointer_linker_section (ptr[r_symndx],
3736 1.1 christos rel->r_addend,
3737 1.1 christos lsect))
3738 1.1 christos return TRUE;
3739 1.1 christos
3740 1.1 christos ptr_linker_section_ptr = &ptr[r_symndx];
3741 1.1 christos }
3742 1.1 christos
3743 1.1 christos /* Allocate space for a pointer in the linker section, and allocate
3744 1.1 christos a new pointer record from internal memory. */
3745 1.1 christos BFD_ASSERT (ptr_linker_section_ptr != NULL);
3746 1.1 christos amt = sizeof (elf_linker_section_pointers_t);
3747 1.1 christos linker_section_ptr = bfd_alloc (abfd, amt);
3748 1.1 christos
3749 1.1 christos if (!linker_section_ptr)
3750 1.3 christos return FALSE;
3751 1.3 christos
3752 1.1 christos linker_section_ptr->next = *ptr_linker_section_ptr;
3753 1.1 christos linker_section_ptr->addend = rel->r_addend;
3754 1.1 christos linker_section_ptr->lsect = lsect;
3755 1.1 christos *ptr_linker_section_ptr = linker_section_ptr;
3756 1.1 christos
3757 1.1 christos if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3758 1.1 christos return FALSE;
3759 1.1 christos linker_section_ptr->offset = lsect->section->size;
3760 1.1 christos lsect->section->size += 4;
3761 1.1 christos
3762 1.1 christos #ifdef DEBUG
3763 1.1 christos fprintf (stderr,
3764 1.1 christos "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3765 1.1 christos lsect->name, (long) linker_section_ptr->offset,
3766 1.1 christos (long) lsect->section->size);
3767 1.1 christos #endif
3768 1.1 christos
3769 1.1 christos return TRUE;
3770 1.1 christos }
3771 1.1 christos
3772 1.1 christos static struct plt_entry **
3773 1.1 christos update_local_sym_info (bfd *abfd,
3774 1.1 christos Elf_Internal_Shdr *symtab_hdr,
3775 1.1 christos unsigned long r_symndx,
3776 1.1 christos int tls_type)
3777 1.1 christos {
3778 1.1 christos bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3779 1.1 christos struct plt_entry **local_plt;
3780 1.1 christos char *local_got_tls_masks;
3781 1.1 christos
3782 1.1 christos if (local_got_refcounts == NULL)
3783 1.1 christos {
3784 1.1 christos bfd_size_type size = symtab_hdr->sh_info;
3785 1.1 christos
3786 1.1 christos size *= (sizeof (*local_got_refcounts)
3787 1.1 christos + sizeof (*local_plt)
3788 1.1 christos + sizeof (*local_got_tls_masks));
3789 1.1 christos local_got_refcounts = bfd_zalloc (abfd, size);
3790 1.1 christos if (local_got_refcounts == NULL)
3791 1.1 christos return NULL;
3792 1.1 christos elf_local_got_refcounts (abfd) = local_got_refcounts;
3793 1.1 christos }
3794 1.1 christos
3795 1.1 christos local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3796 1.1 christos local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3797 1.1 christos local_got_tls_masks[r_symndx] |= tls_type;
3798 1.1 christos if (tls_type != PLT_IFUNC)
3799 1.1 christos local_got_refcounts[r_symndx] += 1;
3800 1.1 christos return local_plt + r_symndx;
3801 1.1 christos }
3802 1.1 christos
3803 1.1 christos static bfd_boolean
3804 1.1 christos update_plt_info (bfd *abfd, struct plt_entry **plist,
3805 1.1 christos asection *sec, bfd_vma addend)
3806 1.1 christos {
3807 1.1 christos struct plt_entry *ent;
3808 1.1 christos
3809 1.1 christos if (addend < 32768)
3810 1.1 christos sec = NULL;
3811 1.1 christos for (ent = *plist; ent != NULL; ent = ent->next)
3812 1.1 christos if (ent->sec == sec && ent->addend == addend)
3813 1.1 christos break;
3814 1.1 christos if (ent == NULL)
3815 1.1 christos {
3816 1.1 christos bfd_size_type amt = sizeof (*ent);
3817 1.1 christos ent = bfd_alloc (abfd, amt);
3818 1.1 christos if (ent == NULL)
3819 1.1 christos return FALSE;
3820 1.1 christos ent->next = *plist;
3821 1.1 christos ent->sec = sec;
3822 1.1 christos ent->addend = addend;
3823 1.1 christos ent->plt.refcount = 0;
3824 1.1 christos *plist = ent;
3825 1.1 christos }
3826 1.1 christos ent->plt.refcount += 1;
3827 1.1 christos return TRUE;
3828 1.1 christos }
3829 1.1 christos
3830 1.1 christos static struct plt_entry *
3831 1.1 christos find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3832 1.1 christos {
3833 1.1 christos struct plt_entry *ent;
3834 1.1 christos
3835 1.1 christos if (addend < 32768)
3836 1.1 christos sec = NULL;
3837 1.1 christos for (ent = *plist; ent != NULL; ent = ent->next)
3838 1.1 christos if (ent->sec == sec && ent->addend == addend)
3839 1.1 christos break;
3840 1.1 christos return ent;
3841 1.1 christos }
3842 1.1 christos
3843 1.1 christos static bfd_boolean
3844 1.1 christos is_branch_reloc (enum elf_ppc_reloc_type r_type)
3845 1.1 christos {
3846 1.1 christos return (r_type == R_PPC_PLTREL24
3847 1.1 christos || r_type == R_PPC_LOCAL24PC
3848 1.1 christos || r_type == R_PPC_REL24
3849 1.1 christos || r_type == R_PPC_REL14
3850 1.1 christos || r_type == R_PPC_REL14_BRTAKEN
3851 1.1 christos || r_type == R_PPC_REL14_BRNTAKEN
3852 1.1 christos || r_type == R_PPC_ADDR24
3853 1.1 christos || r_type == R_PPC_ADDR14
3854 1.1 christos || r_type == R_PPC_ADDR14_BRTAKEN
3855 1.1 christos || r_type == R_PPC_ADDR14_BRNTAKEN);
3856 1.1 christos }
3857 1.1 christos
3858 1.1 christos static void
3859 1.1 christos bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3860 1.1 christos {
3861 1.1 christos (*_bfd_error_handler)
3862 1.1 christos (_("%B: relocation %s cannot be used when making a shared object"),
3863 1.1 christos abfd,
3864 1.1 christos ppc_elf_howto_table[r_type]->name);
3865 1.1 christos bfd_set_error (bfd_error_bad_value);
3866 1.1 christos }
3867 1.1 christos
3868 1.1 christos /* Look through the relocs for a section during the first phase, and
3869 1.1 christos allocate space in the global offset table or procedure linkage
3870 1.1 christos table. */
3871 1.1 christos
3872 1.1 christos static bfd_boolean
3873 1.1 christos ppc_elf_check_relocs (bfd *abfd,
3874 1.1 christos struct bfd_link_info *info,
3875 1.1 christos asection *sec,
3876 1.1 christos const Elf_Internal_Rela *relocs)
3877 1.1 christos {
3878 1.1 christos struct ppc_elf_link_hash_table *htab;
3879 1.1 christos Elf_Internal_Shdr *symtab_hdr;
3880 1.1 christos struct elf_link_hash_entry **sym_hashes;
3881 1.1 christos const Elf_Internal_Rela *rel;
3882 1.1 christos const Elf_Internal_Rela *rel_end;
3883 1.1 christos asection *got2, *sreloc;
3884 1.1 christos struct elf_link_hash_entry *tga;
3885 1.1 christos
3886 1.1 christos if (info->relocatable)
3887 1.1 christos return TRUE;
3888 1.1 christos
3889 1.1 christos /* Don't do anything special with non-loaded, non-alloced sections.
3890 1.1 christos In particular, any relocs in such sections should not affect GOT
3891 1.1 christos and PLT reference counting (ie. we don't allow them to create GOT
3892 1.1 christos or PLT entries), there's no possibility or desire to optimize TLS
3893 1.1 christos relocs, and there's not much point in propagating relocs to shared
3894 1.1 christos libs that the dynamic linker won't relocate. */
3895 1.1 christos if ((sec->flags & SEC_ALLOC) == 0)
3896 1.1 christos return TRUE;
3897 1.1 christos
3898 1.1 christos #ifdef DEBUG
3899 1.1 christos _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3900 1.1 christos sec, abfd);
3901 1.1 christos #endif
3902 1.1 christos
3903 1.1 christos BFD_ASSERT (is_ppc_elf (abfd));
3904 1.1 christos
3905 1.1 christos /* Initialize howto table if not already done. */
3906 1.1 christos if (!ppc_elf_howto_table[R_PPC_ADDR32])
3907 1.1 christos ppc_elf_howto_init ();
3908 1.1 christos
3909 1.1 christos htab = ppc_elf_hash_table (info);
3910 1.1 christos if (htab->glink == NULL)
3911 1.1 christos {
3912 1.1 christos if (htab->elf.dynobj == NULL)
3913 1.1 christos htab->elf.dynobj = abfd;
3914 1.1 christos if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3915 1.1 christos return FALSE;
3916 1.1 christos }
3917 1.1 christos tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3918 1.1 christos FALSE, FALSE, TRUE);
3919 1.1 christos symtab_hdr = &elf_symtab_hdr (abfd);
3920 1.1 christos sym_hashes = elf_sym_hashes (abfd);
3921 1.1 christos got2 = bfd_get_section_by_name (abfd, ".got2");
3922 1.1 christos sreloc = NULL;
3923 1.1 christos
3924 1.1 christos rel_end = relocs + sec->reloc_count;
3925 1.1 christos for (rel = relocs; rel < rel_end; rel++)
3926 1.1 christos {
3927 1.1 christos unsigned long r_symndx;
3928 1.1 christos enum elf_ppc_reloc_type r_type;
3929 1.1 christos struct elf_link_hash_entry *h;
3930 1.1 christos int tls_type;
3931 1.1 christos
3932 1.1 christos r_symndx = ELF32_R_SYM (rel->r_info);
3933 1.1 christos if (r_symndx < symtab_hdr->sh_info)
3934 1.1 christos h = NULL;
3935 1.1 christos else
3936 1.1 christos {
3937 1.1 christos h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3938 1.1 christos while (h->root.type == bfd_link_hash_indirect
3939 1.1 christos || h->root.type == bfd_link_hash_warning)
3940 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
3941 1.1 christos
3942 1.1 christos /* PR15323, ref flags aren't set for references in the same
3943 1.1 christos object. */
3944 1.1 christos h->root.non_ir_ref = 1;
3945 1.1 christos }
3946 1.1 christos
3947 1.1 christos /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3948 1.1 christos This shows up in particular in an R_PPC_ADDR32 in the eabi
3949 1.1 christos startup code. */
3950 1.1 christos if (h != NULL
3951 1.1 christos && htab->got == NULL
3952 1.1 christos && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3953 1.1 christos {
3954 1.1 christos if (htab->elf.dynobj == NULL)
3955 1.1 christos htab->elf.dynobj = abfd;
3956 1.1 christos if (!ppc_elf_create_got (htab->elf.dynobj, info))
3957 1.1 christos return FALSE;
3958 1.1 christos BFD_ASSERT (h == htab->elf.hgot);
3959 1.1 christos }
3960 1.1 christos
3961 1.1 christos tls_type = 0;
3962 1.1 christos r_type = ELF32_R_TYPE (rel->r_info);
3963 1.1 christos if (h == NULL && !htab->is_vxworks)
3964 1.1 christos {
3965 1.1 christos Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3966 1.1 christos abfd, r_symndx);
3967 1.1 christos if (isym == NULL)
3968 1.1 christos return FALSE;
3969 1.1 christos
3970 1.1 christos if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3971 1.1 christos {
3972 1.1 christos struct plt_entry **ifunc;
3973 1.1 christos
3974 1.1 christos /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
3975 1.1 christos ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
3976 1.1 christos PLT_IFUNC);
3977 1.1 christos if (ifunc == NULL)
3978 1.1 christos return FALSE;
3979 1.1 christos
3980 1.1 christos /* STT_GNU_IFUNC symbols must have a PLT entry;
3981 1.1 christos In a non-pie executable even when there are
3982 1.1 christos no plt calls. */
3983 1.1 christos if (!info->shared
3984 1.1 christos || is_branch_reloc (r_type))
3985 1.1 christos {
3986 1.1 christos bfd_vma addend = 0;
3987 1.1 christos if (r_type == R_PPC_PLTREL24)
3988 1.1 christos {
3989 1.1 christos ppc_elf_tdata (abfd)->makes_plt_call = 1;
3990 1.1 christos if (info->shared)
3991 1.1 christos addend = rel->r_addend;
3992 1.1 christos }
3993 1.1 christos if (!update_plt_info (abfd, ifunc, got2, addend))
3994 1.1 christos return FALSE;
3995 1.1 christos }
3996 1.1 christos }
3997 1.1 christos }
3998 1.1 christos
3999 1.1 christos if (!htab->is_vxworks
4000 1.1 christos && is_branch_reloc (r_type)
4001 1.1 christos && h != NULL
4002 1.1 christos && h == tga)
4003 1.1 christos {
4004 1.1 christos if (rel != relocs
4005 1.1 christos && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4006 1.1 christos || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4007 1.1 christos /* We have a new-style __tls_get_addr call with a marker
4008 1.1 christos reloc. */
4009 1.1 christos ;
4010 1.1 christos else
4011 1.1 christos /* Mark this section as having an old-style call. */
4012 1.1 christos sec->has_tls_get_addr_call = 1;
4013 1.1 christos }
4014 1.1 christos
4015 1.1 christos switch (r_type)
4016 1.1 christos {
4017 1.1 christos case R_PPC_TLSGD:
4018 1.1 christos case R_PPC_TLSLD:
4019 1.1 christos /* These special tls relocs tie a call to __tls_get_addr with
4020 1.1 christos its parameter symbol. */
4021 1.1 christos break;
4022 1.1 christos
4023 1.1 christos case R_PPC_GOT_TLSLD16:
4024 1.1 christos case R_PPC_GOT_TLSLD16_LO:
4025 1.1 christos case R_PPC_GOT_TLSLD16_HI:
4026 1.1 christos case R_PPC_GOT_TLSLD16_HA:
4027 1.1 christos tls_type = TLS_TLS | TLS_LD;
4028 1.1 christos goto dogottls;
4029 1.1 christos
4030 1.1 christos case R_PPC_GOT_TLSGD16:
4031 1.1 christos case R_PPC_GOT_TLSGD16_LO:
4032 1.1 christos case R_PPC_GOT_TLSGD16_HI:
4033 1.1 christos case R_PPC_GOT_TLSGD16_HA:
4034 1.3 christos tls_type = TLS_TLS | TLS_GD;
4035 1.1 christos goto dogottls;
4036 1.1 christos
4037 1.1 christos case R_PPC_GOT_TPREL16:
4038 1.1 christos case R_PPC_GOT_TPREL16_LO:
4039 1.1 christos case R_PPC_GOT_TPREL16_HI:
4040 1.1 christos case R_PPC_GOT_TPREL16_HA:
4041 1.1 christos if (info->shared)
4042 1.1 christos info->flags |= DF_STATIC_TLS;
4043 1.1 christos tls_type = TLS_TLS | TLS_TPREL;
4044 1.1 christos goto dogottls;
4045 1.1 christos
4046 1.1 christos case R_PPC_GOT_DTPREL16:
4047 1.1 christos case R_PPC_GOT_DTPREL16_LO:
4048 1.1 christos case R_PPC_GOT_DTPREL16_HI:
4049 1.1 christos case R_PPC_GOT_DTPREL16_HA:
4050 1.1 christos tls_type = TLS_TLS | TLS_DTPREL;
4051 1.1 christos dogottls:
4052 1.1 christos sec->has_tls_reloc = 1;
4053 1.1 christos /* Fall thru */
4054 1.1 christos
4055 1.1 christos /* GOT16 relocations */
4056 1.1 christos case R_PPC_GOT16:
4057 1.1 christos case R_PPC_GOT16_LO:
4058 1.1 christos case R_PPC_GOT16_HI:
4059 1.1 christos case R_PPC_GOT16_HA:
4060 1.1 christos /* This symbol requires a global offset table entry. */
4061 1.1 christos if (htab->got == NULL)
4062 1.1 christos {
4063 1.1 christos if (htab->elf.dynobj == NULL)
4064 1.1 christos htab->elf.dynobj = abfd;
4065 1.1 christos if (!ppc_elf_create_got (htab->elf.dynobj, info))
4066 1.1 christos return FALSE;
4067 1.1 christos }
4068 1.1 christos if (h != NULL)
4069 1.1 christos {
4070 1.1 christos h->got.refcount += 1;
4071 1.1 christos ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4072 1.1 christos }
4073 1.1 christos else
4074 1.1 christos /* This is a global offset table entry for a local symbol. */
4075 1.1 christos if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4076 1.1 christos return FALSE;
4077 1.1 christos
4078 1.1 christos /* We may also need a plt entry if the symbol turns out to be
4079 1.1 christos an ifunc. */
4080 1.1 christos if (h != NULL && !info->shared)
4081 1.1 christos {
4082 1.1 christos if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4083 1.1 christos return FALSE;
4084 1.1 christos }
4085 1.1 christos break;
4086 1.1 christos
4087 1.3 christos /* Indirect .sdata relocation. */
4088 1.3 christos case R_PPC_EMB_SDAI16:
4089 1.3 christos if (info->shared)
4090 1.1 christos {
4091 1.1 christos bad_shared_reloc (abfd, r_type);
4092 1.1 christos return FALSE;
4093 1.1 christos }
4094 1.1 christos htab->sdata[0].sym->ref_regular = 1;
4095 1.1 christos if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4096 1.1 christos h, rel))
4097 1.1 christos return FALSE;
4098 1.1 christos if (h != NULL)
4099 1.1 christos {
4100 1.1 christos ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4101 1.1 christos h->non_got_ref = TRUE;
4102 1.1 christos }
4103 1.1 christos break;
4104 1.1 christos
4105 1.3 christos /* Indirect .sdata2 relocation. */
4106 1.3 christos case R_PPC_EMB_SDA2I16:
4107 1.3 christos if (info->shared)
4108 1.1 christos {
4109 1.1 christos bad_shared_reloc (abfd, r_type);
4110 1.1 christos return FALSE;
4111 1.1 christos }
4112 1.1 christos htab->sdata[1].sym->ref_regular = 1;
4113 1.1 christos if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4114 1.1 christos h, rel))
4115 1.1 christos return FALSE;
4116 1.3 christos if (h != NULL)
4117 1.3 christos {
4118 1.3 christos ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4119 1.3 christos h->non_got_ref = TRUE;
4120 1.1 christos }
4121 1.1 christos break;
4122 1.1 christos
4123 1.1 christos case R_PPC_SDAREL16:
4124 1.1 christos htab->sdata[0].sym->ref_regular = 1;
4125 1.1 christos /* Fall thru */
4126 1.1 christos
4127 1.1 christos case R_PPC_VLE_SDAREL_LO16A:
4128 1.1 christos case R_PPC_VLE_SDAREL_LO16D:
4129 1.1 christos case R_PPC_VLE_SDAREL_HI16A:
4130 1.1 christos case R_PPC_VLE_SDAREL_HI16D:
4131 1.1 christos case R_PPC_VLE_SDAREL_HA16A:
4132 1.1 christos case R_PPC_VLE_SDAREL_HA16D:
4133 1.1 christos if (h != NULL)
4134 1.1 christos {
4135 1.1 christos ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4136 1.1 christos h->non_got_ref = TRUE;
4137 1.1 christos }
4138 1.1 christos break;
4139 1.1 christos
4140 1.1 christos case R_PPC_VLE_REL8:
4141 1.1 christos case R_PPC_VLE_REL15:
4142 1.1 christos case R_PPC_VLE_REL24:
4143 1.1 christos case R_PPC_VLE_LO16A:
4144 1.1 christos case R_PPC_VLE_LO16D:
4145 1.1 christos case R_PPC_VLE_HI16A:
4146 1.1 christos case R_PPC_VLE_HI16D:
4147 1.1 christos case R_PPC_VLE_HA16A:
4148 1.1 christos case R_PPC_VLE_HA16D:
4149 1.1 christos break;
4150 1.3 christos
4151 1.1 christos case R_PPC_EMB_SDA2REL:
4152 1.1 christos if (info->shared)
4153 1.1 christos {
4154 1.1 christos bad_shared_reloc (abfd, r_type);
4155 1.1 christos return FALSE;
4156 1.1 christos }
4157 1.1 christos htab->sdata[1].sym->ref_regular = 1;
4158 1.1 christos if (h != NULL)
4159 1.1 christos {
4160 1.1 christos ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4161 1.1 christos h->non_got_ref = TRUE;
4162 1.1 christos }
4163 1.1 christos break;
4164 1.1 christos
4165 1.1 christos case R_PPC_VLE_SDA21_LO:
4166 1.1 christos case R_PPC_VLE_SDA21:
4167 1.1 christos case R_PPC_EMB_SDA21:
4168 1.1 christos case R_PPC_EMB_RELSDA:
4169 1.1 christos if (info->shared)
4170 1.1 christos {
4171 1.1 christos bad_shared_reloc (abfd, r_type);
4172 1.1 christos return FALSE;
4173 1.1 christos }
4174 1.1 christos if (h != NULL)
4175 1.1 christos {
4176 1.1 christos ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4177 1.1 christos h->non_got_ref = TRUE;
4178 1.1 christos }
4179 1.1 christos break;
4180 1.1 christos
4181 1.1 christos case R_PPC_EMB_NADDR32:
4182 1.1 christos case R_PPC_EMB_NADDR16:
4183 1.1 christos case R_PPC_EMB_NADDR16_LO:
4184 1.1 christos case R_PPC_EMB_NADDR16_HI:
4185 1.1 christos case R_PPC_EMB_NADDR16_HA:
4186 1.1 christos if (info->shared)
4187 1.1 christos {
4188 1.1 christos bad_shared_reloc (abfd, r_type);
4189 1.1 christos return FALSE;
4190 1.1 christos }
4191 1.1 christos if (h != NULL)
4192 1.1 christos h->non_got_ref = TRUE;
4193 1.1 christos break;
4194 1.1 christos
4195 1.1 christos case R_PPC_PLTREL24:
4196 1.1 christos if (h == NULL)
4197 1.1 christos break;
4198 1.1 christos /* Fall through */
4199 1.1 christos case R_PPC_PLT32:
4200 1.1 christos case R_PPC_PLTREL32:
4201 1.1 christos case R_PPC_PLT16_LO:
4202 1.1 christos case R_PPC_PLT16_HI:
4203 1.1 christos case R_PPC_PLT16_HA:
4204 1.1 christos #ifdef DEBUG
4205 1.1 christos fprintf (stderr, "Reloc requires a PLT entry\n");
4206 1.1 christos #endif
4207 1.1 christos /* This symbol requires a procedure linkage table entry. We
4208 1.1 christos actually build the entry in finish_dynamic_symbol,
4209 1.1 christos because this might be a case of linking PIC code without
4210 1.1 christos linking in any dynamic objects, in which case we don't
4211 1.1 christos need to generate a procedure linkage table after all. */
4212 1.1 christos
4213 1.1 christos if (h == NULL)
4214 1.1 christos {
4215 1.1 christos /* It does not make sense to have a procedure linkage
4216 1.1 christos table entry for a local symbol. */
4217 1.1 christos info->callbacks->einfo (_("%P: %H: %s reloc against local symbol\n"),
4218 1.1 christos abfd, sec, rel->r_offset,
4219 1.1 christos ppc_elf_howto_table[r_type]->name);
4220 1.1 christos bfd_set_error (bfd_error_bad_value);
4221 1.1 christos return FALSE;
4222 1.1 christos }
4223 1.1 christos else
4224 1.1 christos {
4225 1.1 christos bfd_vma addend = 0;
4226 1.1 christos
4227 1.1 christos if (r_type == R_PPC_PLTREL24)
4228 1.1 christos {
4229 1.1 christos ppc_elf_tdata (abfd)->makes_plt_call = 1;
4230 1.1 christos if (info->shared)
4231 1.1 christos addend = rel->r_addend;
4232 1.1 christos }
4233 1.1 christos h->needs_plt = 1;
4234 1.1 christos if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4235 1.1 christos return FALSE;
4236 1.1 christos }
4237 1.1 christos break;
4238 1.1 christos
4239 1.1 christos /* The following relocations don't need to propagate the
4240 1.1 christos relocation if linking a shared object since they are
4241 1.1 christos section relative. */
4242 1.1 christos case R_PPC_SECTOFF:
4243 1.1 christos case R_PPC_SECTOFF_LO:
4244 1.1 christos case R_PPC_SECTOFF_HI:
4245 1.1 christos case R_PPC_SECTOFF_HA:
4246 1.1 christos case R_PPC_DTPREL16:
4247 1.1 christos case R_PPC_DTPREL16_LO:
4248 1.1 christos case R_PPC_DTPREL16_HI:
4249 1.1 christos case R_PPC_DTPREL16_HA:
4250 1.1 christos case R_PPC_TOC16:
4251 1.1 christos break;
4252 1.1 christos
4253 1.1 christos case R_PPC_REL16:
4254 1.1 christos case R_PPC_REL16_LO:
4255 1.1 christos case R_PPC_REL16_HI:
4256 1.1 christos case R_PPC_REL16_HA:
4257 1.1 christos ppc_elf_tdata (abfd)->has_rel16 = 1;
4258 1.1 christos break;
4259 1.1 christos
4260 1.1 christos /* These are just markers. */
4261 1.1 christos case R_PPC_TLS:
4262 1.1 christos case R_PPC_EMB_MRKREF:
4263 1.1 christos case R_PPC_NONE:
4264 1.1 christos case R_PPC_max:
4265 1.1 christos case R_PPC_RELAX:
4266 1.1 christos case R_PPC_RELAX_PLT:
4267 1.1 christos case R_PPC_RELAX_PLTREL24:
4268 1.1 christos break;
4269 1.1 christos
4270 1.1 christos /* These should only appear in dynamic objects. */
4271 1.1 christos case R_PPC_COPY:
4272 1.1 christos case R_PPC_GLOB_DAT:
4273 1.1 christos case R_PPC_JMP_SLOT:
4274 1.1 christos case R_PPC_RELATIVE:
4275 1.1 christos case R_PPC_IRELATIVE:
4276 1.1 christos break;
4277 1.1 christos
4278 1.1 christos /* These aren't handled yet. We'll report an error later. */
4279 1.1 christos case R_PPC_ADDR30:
4280 1.1 christos case R_PPC_EMB_RELSEC16:
4281 1.1 christos case R_PPC_EMB_RELST_LO:
4282 1.1 christos case R_PPC_EMB_RELST_HI:
4283 1.1 christos case R_PPC_EMB_RELST_HA:
4284 1.1 christos case R_PPC_EMB_BIT_FLD:
4285 1.1 christos break;
4286 1.1 christos
4287 1.3 christos /* This refers only to functions defined in the shared library. */
4288 1.3 christos case R_PPC_LOCAL24PC:
4289 1.3 christos if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4290 1.3 christos {
4291 1.3 christos htab->plt_type = PLT_OLD;
4292 1.3 christos htab->old_bfd = abfd;
4293 1.3 christos }
4294 1.3 christos if (h != NULL && h->type == STT_GNU_IFUNC)
4295 1.3 christos {
4296 1.3 christos if (info->shared)
4297 1.3 christos {
4298 1.3 christos info->callbacks->einfo (_("%P: %H: @local call to ifunc %s\n"),
4299 1.3 christos abfd, sec, rel->r_offset,
4300 1.3 christos h->root.root.string);
4301 1.1 christos bfd_set_error (bfd_error_bad_value);
4302 1.1 christos return FALSE;
4303 1.1 christos }
4304 1.1 christos h->needs_plt = 1;
4305 1.1 christos if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4306 1.1 christos return FALSE;
4307 1.1 christos }
4308 1.1 christos break;
4309 1.1 christos
4310 1.1 christos /* This relocation describes the C++ object vtable hierarchy.
4311 1.1 christos Reconstruct it for later use during GC. */
4312 1.1 christos case R_PPC_GNU_VTINHERIT:
4313 1.1 christos if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4314 1.1 christos return FALSE;
4315 1.1 christos break;
4316 1.1 christos
4317 1.1 christos /* This relocation describes which C++ vtable entries are actually
4318 1.1 christos used. Record for later use during GC. */
4319 1.1 christos case R_PPC_GNU_VTENTRY:
4320 1.1 christos BFD_ASSERT (h != NULL);
4321 1.1 christos if (h != NULL
4322 1.1 christos && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4323 1.1 christos return FALSE;
4324 1.1 christos break;
4325 1.3 christos
4326 1.1 christos /* We shouldn't really be seeing these. */
4327 1.1 christos case R_PPC_TPREL32:
4328 1.1 christos case R_PPC_TPREL16:
4329 1.1 christos case R_PPC_TPREL16_LO:
4330 1.1 christos case R_PPC_TPREL16_HI:
4331 1.1 christos case R_PPC_TPREL16_HA:
4332 1.1 christos if (info->shared)
4333 1.1 christos info->flags |= DF_STATIC_TLS;
4334 1.1 christos goto dodyn;
4335 1.1 christos
4336 1.1 christos /* Nor these. */
4337 1.1 christos case R_PPC_DTPMOD32:
4338 1.1 christos case R_PPC_DTPREL32:
4339 1.1 christos goto dodyn;
4340 1.1 christos
4341 1.1 christos case R_PPC_REL32:
4342 1.1 christos if (h == NULL
4343 1.1 christos && got2 != NULL
4344 1.1 christos && (sec->flags & SEC_CODE) != 0
4345 1.1 christos && info->shared
4346 1.1 christos && htab->plt_type == PLT_UNSET)
4347 1.1 christos {
4348 1.1 christos /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4349 1.1 christos the start of a function, which assembles to a REL32
4350 1.1 christos reference to .got2. If we detect one of these, then
4351 1.1 christos force the old PLT layout because the linker cannot
4352 1.1 christos reliably deduce the GOT pointer value needed for
4353 1.1 christos PLT call stubs. */
4354 1.1 christos asection *s;
4355 1.1 christos Elf_Internal_Sym *isym;
4356 1.1 christos
4357 1.1 christos isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4358 1.1 christos abfd, r_symndx);
4359 1.1 christos if (isym == NULL)
4360 1.1 christos return FALSE;
4361 1.1 christos
4362 1.1 christos s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4363 1.1 christos if (s == got2)
4364 1.1 christos {
4365 1.1 christos htab->plt_type = PLT_OLD;
4366 1.1 christos htab->old_bfd = abfd;
4367 1.1 christos }
4368 1.1 christos }
4369 1.1 christos if (h == NULL || h == htab->elf.hgot)
4370 1.1 christos break;
4371 1.1 christos /* fall through */
4372 1.1 christos
4373 1.1 christos case R_PPC_ADDR32:
4374 1.1 christos case R_PPC_ADDR16:
4375 1.1 christos case R_PPC_ADDR16_LO:
4376 1.1 christos case R_PPC_ADDR16_HI:
4377 1.1 christos case R_PPC_ADDR16_HA:
4378 1.1 christos case R_PPC_UADDR32:
4379 1.1 christos case R_PPC_UADDR16:
4380 1.1 christos if (h != NULL && !info->shared)
4381 1.1 christos {
4382 1.1 christos /* We may need a plt entry if the symbol turns out to be
4383 1.5 christos a function defined in a dynamic object. */
4384 1.5 christos if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4385 1.5 christos return FALSE;
4386 1.5 christos
4387 1.1 christos /* We may need a copy reloc too. */
4388 1.1 christos h->non_got_ref = 1;
4389 1.1 christos h->pointer_equality_needed = 1;
4390 1.1 christos if (r_type == R_PPC_ADDR16_HA)
4391 1.1 christos ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4392 1.1 christos if (r_type == R_PPC_ADDR16_LO)
4393 1.1 christos ppc_elf_hash_entry (h)->has_addr16_lo = 1;
4394 1.1 christos }
4395 1.1 christos goto dodyn;
4396 1.1 christos
4397 1.1 christos case R_PPC_REL24:
4398 1.1 christos case R_PPC_REL14:
4399 1.1 christos case R_PPC_REL14_BRTAKEN:
4400 1.1 christos case R_PPC_REL14_BRNTAKEN:
4401 1.1 christos if (h == NULL)
4402 1.1 christos break;
4403 1.1 christos if (h == htab->elf.hgot)
4404 1.1 christos {
4405 1.1 christos if (htab->plt_type == PLT_UNSET)
4406 1.1 christos {
4407 1.1 christos htab->plt_type = PLT_OLD;
4408 1.1 christos htab->old_bfd = abfd;
4409 1.1 christos }
4410 1.1 christos break;
4411 1.1 christos }
4412 1.1 christos /* fall through */
4413 1.1 christos
4414 1.1 christos case R_PPC_ADDR24:
4415 1.1 christos case R_PPC_ADDR14:
4416 1.1 christos case R_PPC_ADDR14_BRTAKEN:
4417 1.1 christos case R_PPC_ADDR14_BRNTAKEN:
4418 1.1 christos if (h != NULL && !info->shared)
4419 1.1 christos {
4420 1.1 christos /* We may need a plt entry if the symbol turns out to be
4421 1.1 christos a function defined in a dynamic object. */
4422 1.1 christos h->needs_plt = 1;
4423 1.1 christos if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4424 1.1 christos return FALSE;
4425 1.1 christos break;
4426 1.1 christos }
4427 1.1 christos
4428 1.1 christos dodyn:
4429 1.1 christos /* If we are creating a shared library, and this is a reloc
4430 1.1 christos against a global symbol, or a non PC relative reloc
4431 1.1 christos against a local symbol, then we need to copy the reloc
4432 1.1 christos into the shared library. However, if we are linking with
4433 1.1 christos -Bsymbolic, we do not need to copy a reloc against a
4434 1.1 christos global symbol which is defined in an object we are
4435 1.1 christos including in the link (i.e., DEF_REGULAR is set). At
4436 1.1 christos this point we have not seen all the input files, so it is
4437 1.1 christos possible that DEF_REGULAR is not set now but will be set
4438 1.1 christos later (it is never cleared). In case of a weak definition,
4439 1.1 christos DEF_REGULAR may be cleared later by a strong definition in
4440 1.1 christos a shared library. We account for that possibility below by
4441 1.1 christos storing information in the dyn_relocs field of the hash
4442 1.1 christos table entry. A similar situation occurs when creating
4443 1.1 christos shared libraries and symbol visibility changes render the
4444 1.1 christos symbol local.
4445 1.1 christos
4446 1.1 christos If on the other hand, we are creating an executable, we
4447 1.1 christos may need to keep relocations for symbols satisfied by a
4448 1.1 christos dynamic library if we manage to avoid copy relocs for the
4449 1.1 christos symbol. */
4450 1.1 christos if ((info->shared
4451 1.1 christos && (must_be_dyn_reloc (info, r_type)
4452 1.1 christos || (h != NULL
4453 1.1 christos && (!SYMBOLIC_BIND (info, h)
4454 1.1 christos || h->root.type == bfd_link_hash_defweak
4455 1.1 christos || !h->def_regular))))
4456 1.1 christos || (ELIMINATE_COPY_RELOCS
4457 1.1 christos && !info->shared
4458 1.1 christos && h != NULL
4459 1.1 christos && (h->root.type == bfd_link_hash_defweak
4460 1.1 christos || !h->def_regular)))
4461 1.1 christos {
4462 1.1 christos #ifdef DEBUG
4463 1.1 christos fprintf (stderr,
4464 1.1 christos "ppc_elf_check_relocs needs to "
4465 1.1 christos "create relocation for %s\n",
4466 1.1 christos (h && h->root.root.string
4467 1.1 christos ? h->root.root.string : "<unknown>"));
4468 1.1 christos #endif
4469 1.1 christos if (sreloc == NULL)
4470 1.1 christos {
4471 1.1 christos if (htab->elf.dynobj == NULL)
4472 1.1 christos htab->elf.dynobj = abfd;
4473 1.1 christos
4474 1.1 christos sreloc = _bfd_elf_make_dynamic_reloc_section
4475 1.1 christos (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4476 1.1 christos
4477 1.1 christos if (sreloc == NULL)
4478 1.1 christos return FALSE;
4479 1.1 christos }
4480 1.1 christos
4481 1.1 christos /* If this is a global symbol, we count the number of
4482 1.1 christos relocations we need for this symbol. */
4483 1.1 christos if (h != NULL)
4484 1.1 christos {
4485 1.1 christos struct elf_dyn_relocs *p;
4486 1.1 christos struct elf_dyn_relocs **rel_head;
4487 1.1 christos
4488 1.1 christos rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4489 1.1 christos p = *rel_head;
4490 1.1 christos if (p == NULL || p->sec != sec)
4491 1.1 christos {
4492 1.1 christos p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4493 1.1 christos if (p == NULL)
4494 1.1 christos return FALSE;
4495 1.1 christos p->next = *rel_head;
4496 1.1 christos *rel_head = p;
4497 1.1 christos p->sec = sec;
4498 1.1 christos p->count = 0;
4499 1.1 christos p->pc_count = 0;
4500 1.1 christos }
4501 1.1 christos p->count += 1;
4502 1.1 christos if (!must_be_dyn_reloc (info, r_type))
4503 1.1 christos p->pc_count += 1;
4504 1.1 christos }
4505 1.1 christos else
4506 1.1 christos {
4507 1.1 christos /* Track dynamic relocs needed for local syms too.
4508 1.1 christos We really need local syms available to do this
4509 1.1 christos easily. Oh well. */
4510 1.1 christos struct ppc_dyn_relocs *p;
4511 1.1 christos struct ppc_dyn_relocs **rel_head;
4512 1.1 christos bfd_boolean is_ifunc;
4513 1.1 christos asection *s;
4514 1.1 christos void *vpp;
4515 1.1 christos Elf_Internal_Sym *isym;
4516 1.1 christos
4517 1.1 christos isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4518 1.1 christos abfd, r_symndx);
4519 1.1 christos if (isym == NULL)
4520 1.1 christos return FALSE;
4521 1.1 christos
4522 1.1 christos s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4523 1.1 christos if (s == NULL)
4524 1.1 christos s = sec;
4525 1.1 christos
4526 1.1 christos vpp = &elf_section_data (s)->local_dynrel;
4527 1.1 christos rel_head = (struct ppc_dyn_relocs **) vpp;
4528 1.1 christos is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4529 1.1 christos p = *rel_head;
4530 1.1 christos if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4531 1.1 christos p = p->next;
4532 1.1 christos if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4533 1.1 christos {
4534 1.1 christos p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4535 1.1 christos if (p == NULL)
4536 1.1 christos return FALSE;
4537 1.1 christos p->next = *rel_head;
4538 1.1 christos *rel_head = p;
4539 1.1 christos p->sec = sec;
4540 1.1 christos p->ifunc = is_ifunc;
4541 1.1 christos p->count = 0;
4542 1.1 christos }
4543 1.1 christos p->count += 1;
4544 1.1 christos }
4545 1.1 christos }
4546 1.1 christos
4547 1.1 christos break;
4548 1.1 christos }
4549 1.1 christos }
4550 1.1 christos
4551 1.1 christos return TRUE;
4552 1.1 christos }
4553 1.1 christos
4554 1.1 christos
4556 1.1 christos /* Merge object attributes from IBFD into OBFD. Raise an error if
4557 1.1 christos there are conflicting attributes. */
4558 1.1 christos static bfd_boolean
4559 1.1 christos ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4560 1.1 christos {
4561 1.1 christos obj_attribute *in_attr, *in_attrs;
4562 1.1 christos obj_attribute *out_attr, *out_attrs;
4563 1.1 christos
4564 1.1 christos if (!elf_known_obj_attributes_proc (obfd)[0].i)
4565 1.1 christos {
4566 1.1 christos /* This is the first object. Copy the attributes. */
4567 1.1 christos _bfd_elf_copy_obj_attributes (ibfd, obfd);
4568 1.1 christos
4569 1.1 christos /* Use the Tag_null value to indicate the attributes have been
4570 1.1 christos initialized. */
4571 1.1 christos elf_known_obj_attributes_proc (obfd)[0].i = 1;
4572 1.1 christos
4573 1.1 christos return TRUE;
4574 1.1 christos }
4575 1.1 christos
4576 1.1 christos in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4577 1.1 christos out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4578 1.1 christos
4579 1.1 christos /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4580 1.1 christos non-conflicting ones. */
4581 1.1 christos in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4582 1.1 christos out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4583 1.1 christos if (in_attr->i != out_attr->i)
4584 1.1 christos {
4585 1.1 christos out_attr->type = 1;
4586 1.1 christos if (out_attr->i == 0)
4587 1.1 christos out_attr->i = in_attr->i;
4588 1.1 christos else if (in_attr->i == 0)
4589 1.1 christos ;
4590 1.1 christos else if (out_attr->i == 1 && in_attr->i == 2)
4591 1.1 christos _bfd_error_handler
4592 1.1 christos (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4593 1.1 christos else if (out_attr->i == 1 && in_attr->i == 3)
4594 1.1 christos _bfd_error_handler
4595 1.1 christos (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4596 1.1 christos obfd, ibfd);
4597 1.1 christos else if (out_attr->i == 3 && in_attr->i == 1)
4598 1.1 christos _bfd_error_handler
4599 1.1 christos (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4600 1.1 christos ibfd, obfd);
4601 1.1 christos else if (out_attr->i == 3 && in_attr->i == 2)
4602 1.1 christos _bfd_error_handler
4603 1.1 christos (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4604 1.1 christos ibfd, obfd);
4605 1.1 christos else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
4606 1.1 christos _bfd_error_handler
4607 1.1 christos (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4608 1.1 christos else if (in_attr->i > 3)
4609 1.1 christos _bfd_error_handler
4610 1.1 christos (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
4611 1.1 christos in_attr->i);
4612 1.1 christos else
4613 1.1 christos _bfd_error_handler
4614 1.1 christos (_("Warning: %B uses unknown floating point ABI %d"), obfd,
4615 1.1 christos out_attr->i);
4616 1.1 christos }
4617 1.1 christos
4618 1.1 christos /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4619 1.1 christos merge non-conflicting ones. */
4620 1.1 christos in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4621 1.1 christos out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4622 1.1 christos if (in_attr->i != out_attr->i)
4623 1.1 christos {
4624 1.1 christos const char *in_abi = NULL, *out_abi = NULL;
4625 1.1 christos
4626 1.1 christos switch (in_attr->i)
4627 1.1 christos {
4628 1.1 christos case 1: in_abi = "generic"; break;
4629 1.1 christos case 2: in_abi = "AltiVec"; break;
4630 1.1 christos case 3: in_abi = "SPE"; break;
4631 1.1 christos }
4632 1.1 christos
4633 1.1 christos switch (out_attr->i)
4634 1.1 christos {
4635 1.1 christos case 1: out_abi = "generic"; break;
4636 1.1 christos case 2: out_abi = "AltiVec"; break;
4637 1.1 christos case 3: out_abi = "SPE"; break;
4638 1.1 christos }
4639 1.1 christos
4640 1.1 christos out_attr->type = 1;
4641 1.1 christos if (out_attr->i == 0)
4642 1.1 christos out_attr->i = in_attr->i;
4643 1.1 christos else if (in_attr->i == 0)
4644 1.1 christos ;
4645 1.1 christos /* For now, allow generic to transition to AltiVec or SPE
4646 1.1 christos without a warning. If GCC marked files with their stack
4647 1.1 christos alignment and used don't-care markings for files which are
4648 1.1 christos not affected by the vector ABI, we could warn about this
4649 1.1 christos case too. */
4650 1.1 christos else if (out_attr->i == 1)
4651 1.1 christos out_attr->i = in_attr->i;
4652 1.1 christos else if (in_attr->i == 1)
4653 1.1 christos ;
4654 1.1 christos else if (in_abi == NULL)
4655 1.1 christos _bfd_error_handler
4656 1.1 christos (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4657 1.1 christos in_attr->i);
4658 1.1 christos else if (out_abi == NULL)
4659 1.1 christos _bfd_error_handler
4660 1.1 christos (_("Warning: %B uses unknown vector ABI %d"), obfd,
4661 1.1 christos in_attr->i);
4662 1.1 christos else
4663 1.1 christos _bfd_error_handler
4664 1.1 christos (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4665 1.1 christos ibfd, obfd, in_abi, out_abi);
4666 1.1 christos }
4667 1.1 christos
4668 1.1 christos /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4669 1.1 christos and merge non-conflicting ones. */
4670 1.1 christos in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4671 1.1 christos out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4672 1.1 christos if (in_attr->i != out_attr->i)
4673 1.1 christos {
4674 1.1 christos out_attr->type = 1;
4675 1.1 christos if (out_attr->i == 0)
4676 1.1 christos out_attr->i = in_attr->i;
4677 1.1 christos else if (in_attr->i == 0)
4678 1.1 christos ;
4679 1.1 christos else if (out_attr->i == 1 && in_attr->i == 2)
4680 1.1 christos _bfd_error_handler
4681 1.1 christos (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4682 1.1 christos else if (out_attr->i == 2 && in_attr->i == 1)
4683 1.1 christos _bfd_error_handler
4684 1.1 christos (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4685 1.1 christos else if (in_attr->i > 2)
4686 1.1 christos _bfd_error_handler
4687 1.1 christos (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4688 1.1 christos in_attr->i);
4689 1.1 christos else
4690 1.1 christos _bfd_error_handler
4691 1.1 christos (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4692 1.1 christos out_attr->i);
4693 1.1 christos }
4694 1.1 christos
4695 1.1 christos /* Merge Tag_compatibility attributes and any common GNU ones. */
4696 1.1 christos _bfd_elf_merge_object_attributes (ibfd, obfd);
4697 1.1 christos
4698 1.1 christos return TRUE;
4699 1.1 christos }
4700 1.1 christos
4701 1.1 christos /* Merge backend specific data from an object file to the output
4702 1.1 christos object file when linking. */
4703 1.1 christos
4704 1.1 christos static bfd_boolean
4705 1.1 christos ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4706 1.1 christos {
4707 1.1 christos flagword old_flags;
4708 1.1 christos flagword new_flags;
4709 1.1 christos bfd_boolean error;
4710 1.1 christos
4711 1.1 christos if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4712 1.1 christos return TRUE;
4713 1.1 christos
4714 1.1 christos /* Check if we have the same endianness. */
4715 1.1 christos if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4716 1.1 christos return FALSE;
4717 1.1 christos
4718 1.1 christos if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4719 1.1 christos return FALSE;
4720 1.1 christos
4721 1.1 christos new_flags = elf_elfheader (ibfd)->e_flags;
4722 1.1 christos old_flags = elf_elfheader (obfd)->e_flags;
4723 1.1 christos if (!elf_flags_init (obfd))
4724 1.1 christos {
4725 1.1 christos /* First call, no flags set. */
4726 1.1 christos elf_flags_init (obfd) = TRUE;
4727 1.1 christos elf_elfheader (obfd)->e_flags = new_flags;
4728 1.1 christos }
4729 1.1 christos
4730 1.1 christos /* Compatible flags are ok. */
4731 1.1 christos else if (new_flags == old_flags)
4732 1.1 christos ;
4733 1.1 christos
4734 1.1 christos /* Incompatible flags. */
4735 1.1 christos else
4736 1.1 christos {
4737 1.1 christos /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4738 1.1 christos to be linked with either. */
4739 1.1 christos error = FALSE;
4740 1.1 christos if ((new_flags & EF_PPC_RELOCATABLE) != 0
4741 1.1 christos && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4742 1.1 christos {
4743 1.1 christos error = TRUE;
4744 1.1 christos (*_bfd_error_handler)
4745 1.1 christos (_("%B: compiled with -mrelocatable and linked with "
4746 1.1 christos "modules compiled normally"), ibfd);
4747 1.1 christos }
4748 1.1 christos else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4749 1.1 christos && (old_flags & EF_PPC_RELOCATABLE) != 0)
4750 1.1 christos {
4751 1.1 christos error = TRUE;
4752 1.1 christos (*_bfd_error_handler)
4753 1.1 christos (_("%B: compiled normally and linked with "
4754 1.1 christos "modules compiled with -mrelocatable"), ibfd);
4755 1.1 christos }
4756 1.1 christos
4757 1.1 christos /* The output is -mrelocatable-lib iff both the input files are. */
4758 1.1 christos if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4759 1.1 christos elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4760 1.1 christos
4761 1.1 christos /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4762 1.1 christos but each input file is either -mrelocatable or -mrelocatable-lib. */
4763 1.1 christos if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4764 1.1 christos && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4765 1.1 christos && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4766 1.1 christos elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4767 1.1 christos
4768 1.1 christos /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4769 1.1 christos any module uses it. */
4770 1.1 christos elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4771 1.1 christos
4772 1.1 christos new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4773 1.1 christos old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4774 1.1 christos
4775 1.1 christos /* Warn about any other mismatches. */
4776 1.1 christos if (new_flags != old_flags)
4777 1.1 christos {
4778 1.1 christos error = TRUE;
4779 1.1 christos (*_bfd_error_handler)
4780 1.1 christos (_("%B: uses different e_flags (0x%lx) fields "
4781 1.1 christos "than previous modules (0x%lx)"),
4782 1.1 christos ibfd, (long) new_flags, (long) old_flags);
4783 1.1 christos }
4784 1.1 christos
4785 1.1 christos if (error)
4786 1.1 christos {
4787 1.1 christos bfd_set_error (bfd_error_bad_value);
4788 1.3 christos return FALSE;
4789 1.3 christos }
4790 1.3 christos }
4791 1.1 christos
4792 1.1 christos return TRUE;
4793 1.3 christos }
4794 1.1 christos
4795 1.3 christos static void
4796 1.3 christos ppc_elf_vle_split16 (bfd *output_bfd, bfd_byte *loc,
4797 1.3 christos bfd_vma value,
4798 1.1 christos split16_format_type split16_format)
4799 1.3 christos
4800 1.3 christos {
4801 1.1 christos unsigned int insn, top5;
4802 1.1 christos
4803 1.1 christos insn = bfd_get_32 (output_bfd, loc);
4804 1.1 christos top5 = value & 0xf800;
4805 1.1 christos top5 = top5 << (split16_format == split16a_type ? 9 : 5);
4806 1.1 christos insn |= top5;
4807 1.1 christos insn |= value & 0x7ff;
4808 1.3 christos bfd_put_32 (output_bfd, insn, loc);
4809 1.1 christos }
4810 1.1 christos
4811 1.1 christos
4812 1.1 christos /* Choose which PLT scheme to use, and set .plt flags appropriately.
4814 1.1 christos Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4815 1.1 christos int
4816 1.1 christos ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4817 1.1 christos struct bfd_link_info *info)
4818 1.1 christos {
4819 1.3 christos struct ppc_elf_link_hash_table *htab;
4820 1.1 christos flagword flags;
4821 1.1 christos
4822 1.1 christos htab = ppc_elf_hash_table (info);
4823 1.1 christos
4824 1.1 christos if (htab->plt_type == PLT_UNSET)
4825 1.1 christos {
4826 1.1 christos struct elf_link_hash_entry *h;
4827 1.1 christos
4828 1.1 christos if (htab->params->plt_style == PLT_OLD)
4829 1.1 christos htab->plt_type = PLT_OLD;
4830 1.1 christos else if (info->shared
4831 1.1 christos && htab->elf.dynamic_sections_created
4832 1.1 christos && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4833 1.1 christos FALSE, FALSE, TRUE)) != NULL
4834 1.1 christos && (h->type == STT_FUNC
4835 1.1 christos || h->needs_plt)
4836 1.1 christos && h->ref_regular
4837 1.1 christos && !(SYMBOL_CALLS_LOCAL (info, h)
4838 1.1 christos || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4839 1.1 christos && h->root.type == bfd_link_hash_undefweak)))
4840 1.1 christos {
4841 1.3 christos /* Profiling of shared libs (and pies) is not supported with
4842 1.1 christos secure plt, because ppc32 does profiling before a
4843 1.1 christos function prologue and a secure plt pic call stubs needs
4844 1.1 christos r30 to be set up. */
4845 1.1 christos htab->plt_type = PLT_OLD;
4846 1.1 christos }
4847 1.1 christos else
4848 1.1 christos {
4849 1.3 christos bfd *ibfd;
4850 1.1 christos enum ppc_elf_plt_type plt_type = htab->params->plt_style;
4851 1.1 christos
4852 1.1 christos /* Look through the reloc flags left by ppc_elf_check_relocs.
4853 1.1 christos Use the old style bss plt if a file makes plt calls
4854 1.1 christos without using the new relocs, and if ld isn't given
4855 1.1 christos --secure-plt and we never see REL16 relocs. */
4856 1.1 christos if (plt_type == PLT_UNSET)
4857 1.1 christos plt_type = PLT_OLD;
4858 1.1 christos for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
4859 1.1 christos if (is_ppc_elf (ibfd))
4860 1.1 christos {
4861 1.1 christos if (ppc_elf_tdata (ibfd)->has_rel16)
4862 1.1 christos plt_type = PLT_NEW;
4863 1.1 christos else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4864 1.3 christos {
4865 1.1 christos plt_type = PLT_OLD;
4866 1.1 christos htab->old_bfd = ibfd;
4867 1.1 christos break;
4868 1.1 christos }
4869 1.1 christos }
4870 1.1 christos htab->plt_type = plt_type;
4871 1.1 christos }
4872 1.1 christos }
4873 1.1 christos if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
4874 1.1 christos {
4875 1.1 christos if (htab->old_bfd != NULL)
4876 1.1 christos info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
4877 1.1 christos htab->old_bfd);
4878 1.1 christos else
4879 1.1 christos info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
4880 1.1 christos }
4881 1.1 christos
4882 1.1 christos BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4883 1.1 christos
4884 1.1 christos if (htab->plt_type == PLT_NEW)
4885 1.1 christos {
4886 1.1 christos flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4887 1.1 christos | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4888 1.1 christos
4889 1.1 christos /* The new PLT is a loaded section. */
4890 1.1 christos if (htab->plt != NULL
4891 1.1 christos && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4892 1.1 christos return -1;
4893 1.1 christos
4894 1.1 christos /* The new GOT is not executable. */
4895 1.1 christos if (htab->got != NULL
4896 1.1 christos && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4897 1.1 christos return -1;
4898 1.1 christos }
4899 1.1 christos else
4900 1.1 christos {
4901 1.1 christos /* Stop an unused .glink section from affecting .text alignment. */
4902 1.1 christos if (htab->glink != NULL
4903 1.1 christos && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4904 1.1 christos return -1;
4905 1.1 christos }
4906 1.1 christos return htab->plt_type == PLT_NEW;
4907 1.1 christos }
4908 1.1 christos
4909 1.1 christos /* Return the section that should be marked against GC for a given
4911 1.1 christos relocation. */
4912 1.1 christos
4913 1.1 christos static asection *
4914 1.1 christos ppc_elf_gc_mark_hook (asection *sec,
4915 1.1 christos struct bfd_link_info *info,
4916 1.1 christos Elf_Internal_Rela *rel,
4917 1.1 christos struct elf_link_hash_entry *h,
4918 1.1 christos Elf_Internal_Sym *sym)
4919 1.1 christos {
4920 1.1 christos if (h != NULL)
4921 1.1 christos switch (ELF32_R_TYPE (rel->r_info))
4922 1.1 christos {
4923 1.1 christos case R_PPC_GNU_VTINHERIT:
4924 1.1 christos case R_PPC_GNU_VTENTRY:
4925 1.1 christos return NULL;
4926 1.1 christos }
4927 1.1 christos
4928 1.1 christos return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4929 1.1 christos }
4930 1.1 christos
4931 1.1 christos /* Update the got, plt and dynamic reloc reference counts for the
4932 1.1 christos section being removed. */
4933 1.1 christos
4934 1.1 christos static bfd_boolean
4935 1.1 christos ppc_elf_gc_sweep_hook (bfd *abfd,
4936 1.1 christos struct bfd_link_info *info,
4937 1.1 christos asection *sec,
4938 1.1 christos const Elf_Internal_Rela *relocs)
4939 1.1 christos {
4940 1.1 christos struct ppc_elf_link_hash_table *htab;
4941 1.1 christos Elf_Internal_Shdr *symtab_hdr;
4942 1.1 christos struct elf_link_hash_entry **sym_hashes;
4943 1.1 christos bfd_signed_vma *local_got_refcounts;
4944 1.1 christos const Elf_Internal_Rela *rel, *relend;
4945 1.1 christos asection *got2;
4946 1.1 christos
4947 1.1 christos if (info->relocatable)
4948 1.1 christos return TRUE;
4949 1.1 christos
4950 1.1 christos if ((sec->flags & SEC_ALLOC) == 0)
4951 1.1 christos return TRUE;
4952 1.1 christos
4953 1.1 christos elf_section_data (sec)->local_dynrel = NULL;
4954 1.1 christos
4955 1.1 christos htab = ppc_elf_hash_table (info);
4956 1.1 christos symtab_hdr = &elf_symtab_hdr (abfd);
4957 1.1 christos sym_hashes = elf_sym_hashes (abfd);
4958 1.1 christos local_got_refcounts = elf_local_got_refcounts (abfd);
4959 1.1 christos got2 = bfd_get_section_by_name (abfd, ".got2");
4960 1.1 christos
4961 1.1 christos relend = relocs + sec->reloc_count;
4962 1.1 christos for (rel = relocs; rel < relend; rel++)
4963 1.1 christos {
4964 1.1 christos unsigned long r_symndx;
4965 1.1 christos enum elf_ppc_reloc_type r_type;
4966 1.1 christos struct elf_link_hash_entry *h = NULL;
4967 1.1 christos
4968 1.1 christos r_symndx = ELF32_R_SYM (rel->r_info);
4969 1.1 christos if (r_symndx >= symtab_hdr->sh_info)
4970 1.1 christos {
4971 1.1 christos struct elf_dyn_relocs **pp, *p;
4972 1.1 christos struct ppc_elf_link_hash_entry *eh;
4973 1.1 christos
4974 1.1 christos h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4975 1.1 christos while (h->root.type == bfd_link_hash_indirect
4976 1.1 christos || h->root.type == bfd_link_hash_warning)
4977 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
4978 1.1 christos eh = (struct ppc_elf_link_hash_entry *) h;
4979 1.1 christos
4980 1.1 christos for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4981 1.1 christos if (p->sec == sec)
4982 1.1 christos {
4983 1.1 christos /* Everything must go for SEC. */
4984 1.1 christos *pp = p->next;
4985 1.1 christos break;
4986 1.1 christos }
4987 1.1 christos }
4988 1.1 christos
4989 1.1 christos r_type = ELF32_R_TYPE (rel->r_info);
4990 1.1 christos if (!htab->is_vxworks
4991 1.1 christos && h == NULL
4992 1.1 christos && local_got_refcounts != NULL
4993 1.1 christos && (!info->shared
4994 1.1 christos || is_branch_reloc (r_type)))
4995 1.1 christos {
4996 1.1 christos struct plt_entry **local_plt = (struct plt_entry **)
4997 1.1 christos (local_got_refcounts + symtab_hdr->sh_info);
4998 1.1 christos char *local_got_tls_masks = (char *)
4999 1.1 christos (local_plt + symtab_hdr->sh_info);
5000 1.1 christos if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5001 1.1 christos {
5002 1.1 christos struct plt_entry **ifunc = local_plt + r_symndx;
5003 1.1 christos bfd_vma addend = 0;
5004 1.1 christos struct plt_entry *ent;
5005 1.1 christos
5006 1.1 christos if (r_type == R_PPC_PLTREL24 && info->shared)
5007 1.1 christos addend = rel->r_addend;
5008 1.1 christos ent = find_plt_ent (ifunc, got2, addend);
5009 1.1 christos if (ent->plt.refcount > 0)
5010 1.1 christos ent->plt.refcount -= 1;
5011 1.1 christos continue;
5012 1.1 christos }
5013 1.1 christos }
5014 1.1 christos
5015 1.1 christos switch (r_type)
5016 1.1 christos {
5017 1.1 christos case R_PPC_GOT_TLSLD16:
5018 1.1 christos case R_PPC_GOT_TLSLD16_LO:
5019 1.1 christos case R_PPC_GOT_TLSLD16_HI:
5020 1.1 christos case R_PPC_GOT_TLSLD16_HA:
5021 1.1 christos case R_PPC_GOT_TLSGD16:
5022 1.1 christos case R_PPC_GOT_TLSGD16_LO:
5023 1.1 christos case R_PPC_GOT_TLSGD16_HI:
5024 1.1 christos case R_PPC_GOT_TLSGD16_HA:
5025 1.1 christos case R_PPC_GOT_TPREL16:
5026 1.1 christos case R_PPC_GOT_TPREL16_LO:
5027 1.1 christos case R_PPC_GOT_TPREL16_HI:
5028 1.1 christos case R_PPC_GOT_TPREL16_HA:
5029 1.1 christos case R_PPC_GOT_DTPREL16:
5030 1.1 christos case R_PPC_GOT_DTPREL16_LO:
5031 1.1 christos case R_PPC_GOT_DTPREL16_HI:
5032 1.1 christos case R_PPC_GOT_DTPREL16_HA:
5033 1.1 christos case R_PPC_GOT16:
5034 1.1 christos case R_PPC_GOT16_LO:
5035 1.1 christos case R_PPC_GOT16_HI:
5036 1.1 christos case R_PPC_GOT16_HA:
5037 1.1 christos if (h != NULL)
5038 1.1 christos {
5039 1.1 christos if (h->got.refcount > 0)
5040 1.1 christos h->got.refcount--;
5041 1.1 christos if (!info->shared)
5042 1.1 christos {
5043 1.1 christos struct plt_entry *ent;
5044 1.1 christos
5045 1.1 christos ent = find_plt_ent (&h->plt.plist, NULL, 0);
5046 1.1 christos if (ent != NULL && ent->plt.refcount > 0)
5047 1.1 christos ent->plt.refcount -= 1;
5048 1.1 christos }
5049 1.1 christos }
5050 1.1 christos else if (local_got_refcounts != NULL)
5051 1.1 christos {
5052 1.1 christos if (local_got_refcounts[r_symndx] > 0)
5053 1.1 christos local_got_refcounts[r_symndx]--;
5054 1.1 christos }
5055 1.1 christos break;
5056 1.1 christos
5057 1.1 christos case R_PPC_REL24:
5058 1.1 christos case R_PPC_REL14:
5059 1.1 christos case R_PPC_REL14_BRTAKEN:
5060 1.1 christos case R_PPC_REL14_BRNTAKEN:
5061 1.1 christos case R_PPC_REL32:
5062 1.1 christos if (h == NULL || h == htab->elf.hgot)
5063 1.1 christos break;
5064 1.1 christos /* Fall thru */
5065 1.1 christos
5066 1.1 christos case R_PPC_ADDR32:
5067 1.1 christos case R_PPC_ADDR24:
5068 1.1 christos case R_PPC_ADDR16:
5069 1.1 christos case R_PPC_ADDR16_LO:
5070 1.1 christos case R_PPC_ADDR16_HI:
5071 1.1 christos case R_PPC_ADDR16_HA:
5072 1.1 christos case R_PPC_ADDR14:
5073 1.1 christos case R_PPC_ADDR14_BRTAKEN:
5074 1.1 christos case R_PPC_ADDR14_BRNTAKEN:
5075 1.1 christos case R_PPC_UADDR32:
5076 1.1 christos case R_PPC_UADDR16:
5077 1.1 christos if (info->shared)
5078 1.1 christos break;
5079 1.1 christos
5080 1.1 christos case R_PPC_PLT32:
5081 1.1 christos case R_PPC_PLTREL24:
5082 1.1 christos case R_PPC_PLTREL32:
5083 1.1 christos case R_PPC_PLT16_LO:
5084 1.1 christos case R_PPC_PLT16_HI:
5085 1.1 christos case R_PPC_PLT16_HA:
5086 1.1 christos if (h != NULL)
5087 1.1 christos {
5088 1.1 christos bfd_vma addend = 0;
5089 1.1 christos struct plt_entry *ent;
5090 1.1 christos
5091 1.1 christos if (r_type == R_PPC_PLTREL24 && info->shared)
5092 1.1 christos addend = rel->r_addend;
5093 1.1 christos ent = find_plt_ent (&h->plt.plist, got2, addend);
5094 1.1 christos if (ent != NULL && ent->plt.refcount > 0)
5095 1.1 christos ent->plt.refcount -= 1;
5096 1.1 christos }
5097 1.1 christos break;
5098 1.1 christos
5099 1.1 christos default:
5100 1.3 christos break;
5101 1.1 christos }
5102 1.1 christos }
5103 1.1 christos return TRUE;
5104 1.1 christos }
5105 1.1 christos
5106 1.1 christos /* Set plt output section type, htab->tls_get_addr, and call the
5108 1.5 christos generic ELF tls_setup function. */
5109 1.5 christos
5110 1.3 christos asection *
5111 1.1 christos ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5112 1.1 christos {
5113 1.1 christos struct ppc_elf_link_hash_table *htab;
5114 1.1 christos
5115 1.1 christos htab = ppc_elf_hash_table (info);
5116 1.1 christos htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5117 1.1 christos FALSE, FALSE, TRUE);
5118 1.1 christos if (htab->plt_type != PLT_NEW)
5119 1.1 christos htab->params->no_tls_get_addr_opt = TRUE;
5120 1.1 christos
5121 1.1 christos if (!htab->params->no_tls_get_addr_opt)
5122 1.1 christos {
5123 1.1 christos struct elf_link_hash_entry *opt, *tga;
5124 1.1 christos opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5125 1.1 christos FALSE, FALSE, TRUE);
5126 1.1 christos if (opt != NULL
5127 1.1 christos && (opt->root.type == bfd_link_hash_defined
5128 1.1 christos || opt->root.type == bfd_link_hash_defweak))
5129 1.1 christos {
5130 1.1 christos /* If glibc supports an optimized __tls_get_addr call stub,
5131 1.1 christos signalled by the presence of __tls_get_addr_opt, and we'll
5132 1.1 christos be calling __tls_get_addr via a plt call stub, then
5133 1.1 christos make __tls_get_addr point to __tls_get_addr_opt. */
5134 1.1 christos tga = htab->tls_get_addr;
5135 1.1 christos if (htab->elf.dynamic_sections_created
5136 1.1 christos && tga != NULL
5137 1.1 christos && (tga->type == STT_FUNC
5138 1.1 christos || tga->needs_plt)
5139 1.1 christos && !(SYMBOL_CALLS_LOCAL (info, tga)
5140 1.1 christos || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5141 1.1 christos && tga->root.type == bfd_link_hash_undefweak)))
5142 1.1 christos {
5143 1.1 christos struct plt_entry *ent;
5144 1.1 christos for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5145 1.1 christos if (ent->plt.refcount > 0)
5146 1.1 christos break;
5147 1.1 christos if (ent != NULL)
5148 1.1 christos {
5149 1.1 christos tga->root.type = bfd_link_hash_indirect;
5150 1.1 christos tga->root.u.i.link = &opt->root;
5151 1.1 christos ppc_elf_copy_indirect_symbol (info, opt, tga);
5152 1.1 christos if (opt->dynindx != -1)
5153 1.1 christos {
5154 1.1 christos /* Use __tls_get_addr_opt in dynamic relocations. */
5155 1.3 christos opt->dynindx = -1;
5156 1.1 christos _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5157 1.1 christos opt->dynstr_index);
5158 1.1 christos if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5159 1.1 christos return FALSE;
5160 1.1 christos }
5161 1.1 christos htab->tls_get_addr = opt;
5162 1.1 christos }
5163 1.1 christos }
5164 1.1 christos }
5165 1.1 christos else
5166 1.1 christos htab->params->no_tls_get_addr_opt = TRUE;
5167 1.1 christos }
5168 1.1 christos if (htab->plt_type == PLT_NEW
5169 1.1 christos && htab->plt != NULL
5170 1.1 christos && htab->plt->output_section != NULL)
5171 1.1 christos {
5172 1.1 christos elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
5173 1.1 christos elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
5174 1.1 christos }
5175 1.1 christos
5176 1.1 christos return _bfd_elf_tls_setup (obfd, info);
5177 1.1 christos }
5178 1.1 christos
5179 1.1 christos /* Return TRUE iff REL is a branch reloc with a global symbol matching
5180 1.1 christos HASH. */
5181 1.1 christos
5182 1.1 christos static bfd_boolean
5183 1.1 christos branch_reloc_hash_match (const bfd *ibfd,
5184 1.1 christos const Elf_Internal_Rela *rel,
5185 1.1 christos const struct elf_link_hash_entry *hash)
5186 1.1 christos {
5187 1.1 christos Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5188 1.1 christos enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5189 1.1 christos unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5190 1.1 christos
5191 1.1 christos if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5192 1.1 christos {
5193 1.1 christos struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5194 1.1 christos struct elf_link_hash_entry *h;
5195 1.1 christos
5196 1.1 christos h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5197 1.1 christos while (h->root.type == bfd_link_hash_indirect
5198 1.1 christos || h->root.type == bfd_link_hash_warning)
5199 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
5200 1.1 christos if (h == hash)
5201 1.1 christos return TRUE;
5202 1.1 christos }
5203 1.1 christos return FALSE;
5204 1.1 christos }
5205 1.1 christos
5206 1.1 christos /* Run through all the TLS relocs looking for optimization
5207 1.1 christos opportunities. */
5208 1.1 christos
5209 1.1 christos bfd_boolean
5210 1.1 christos ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5211 1.1 christos struct bfd_link_info *info)
5212 1.1 christos {
5213 1.1 christos bfd *ibfd;
5214 1.1 christos asection *sec;
5215 1.1 christos struct ppc_elf_link_hash_table *htab;
5216 1.1 christos int pass;
5217 1.1 christos
5218 1.1 christos if (info->relocatable || !info->executable)
5219 1.1 christos return TRUE;
5220 1.1 christos
5221 1.3 christos htab = ppc_elf_hash_table (info);
5222 1.1 christos if (htab == NULL)
5223 1.1 christos return FALSE;
5224 1.1 christos
5225 1.1 christos /* Make two passes through the relocs. First time check that tls
5226 1.1 christos relocs involved in setting up a tls_get_addr call are indeed
5227 1.1 christos followed by such a call. If they are not, don't do any tls
5228 1.1 christos optimization. On the second pass twiddle tls_mask flags to
5229 1.1 christos notify relocate_section that optimization can be done, and
5230 1.1 christos adjust got and plt refcounts. */
5231 1.1 christos for (pass = 0; pass < 2; ++pass)
5232 1.1 christos for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5233 1.1 christos {
5234 1.1 christos Elf_Internal_Sym *locsyms = NULL;
5235 1.1 christos Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5236 1.1 christos asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5237 1.1 christos
5238 1.1 christos for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5239 1.1 christos if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5240 1.1 christos {
5241 1.1 christos Elf_Internal_Rela *relstart, *rel, *relend;
5242 1.1 christos int expecting_tls_get_addr = 0;
5243 1.1 christos
5244 1.1 christos /* Read the relocations. */
5245 1.1 christos relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5246 1.1 christos info->keep_memory);
5247 1.1 christos if (relstart == NULL)
5248 1.1 christos return FALSE;
5249 1.1 christos
5250 1.1 christos relend = relstart + sec->reloc_count;
5251 1.1 christos for (rel = relstart; rel < relend; rel++)
5252 1.1 christos {
5253 1.1 christos enum elf_ppc_reloc_type r_type;
5254 1.1 christos unsigned long r_symndx;
5255 1.1 christos struct elf_link_hash_entry *h = NULL;
5256 1.1 christos char *tls_mask;
5257 1.1 christos char tls_set, tls_clear;
5258 1.1 christos bfd_boolean is_local;
5259 1.1 christos bfd_signed_vma *got_count;
5260 1.1 christos
5261 1.1 christos r_symndx = ELF32_R_SYM (rel->r_info);
5262 1.1 christos if (r_symndx >= symtab_hdr->sh_info)
5263 1.1 christos {
5264 1.1 christos struct elf_link_hash_entry **sym_hashes;
5265 1.1 christos
5266 1.1 christos sym_hashes = elf_sym_hashes (ibfd);
5267 1.1 christos h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5268 1.1 christos while (h->root.type == bfd_link_hash_indirect
5269 1.1 christos || h->root.type == bfd_link_hash_warning)
5270 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
5271 1.1 christos }
5272 1.1 christos
5273 1.1 christos is_local = FALSE;
5274 1.1 christos if (h == NULL
5275 1.1 christos || !h->def_dynamic)
5276 1.1 christos is_local = TRUE;
5277 1.1 christos
5278 1.1 christos r_type = ELF32_R_TYPE (rel->r_info);
5279 1.1 christos /* If this section has old-style __tls_get_addr calls
5280 1.1 christos without marker relocs, then check that each
5281 1.1 christos __tls_get_addr call reloc is preceded by a reloc
5282 1.1 christos that conceivably belongs to the __tls_get_addr arg
5283 1.1 christos setup insn. If we don't find matching arg setup
5284 1.1 christos relocs, don't do any tls optimization. */
5285 1.1 christos if (pass == 0
5286 1.1 christos && sec->has_tls_get_addr_call
5287 1.1 christos && h != NULL
5288 1.1 christos && h == htab->tls_get_addr
5289 1.1 christos && !expecting_tls_get_addr
5290 1.1 christos && is_branch_reloc (r_type))
5291 1.1 christos {
5292 1.1 christos info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5293 1.1 christos "TLS optimization disabled\n",
5294 1.1 christos ibfd, sec, rel->r_offset);
5295 1.1 christos if (elf_section_data (sec)->relocs != relstart)
5296 1.1 christos free (relstart);
5297 1.1 christos return TRUE;
5298 1.1 christos }
5299 1.1 christos
5300 1.1 christos expecting_tls_get_addr = 0;
5301 1.1 christos switch (r_type)
5302 1.1 christos {
5303 1.1 christos case R_PPC_GOT_TLSLD16:
5304 1.1 christos case R_PPC_GOT_TLSLD16_LO:
5305 1.1 christos expecting_tls_get_addr = 1;
5306 1.1 christos /* Fall thru */
5307 1.1 christos
5308 1.1 christos case R_PPC_GOT_TLSLD16_HI:
5309 1.1 christos case R_PPC_GOT_TLSLD16_HA:
5310 1.1 christos /* These relocs should never be against a symbol
5311 1.1 christos defined in a shared lib. Leave them alone if
5312 1.1 christos that turns out to be the case. */
5313 1.1 christos if (!is_local)
5314 1.1 christos continue;
5315 1.1 christos
5316 1.1 christos /* LD -> LE */
5317 1.1 christos tls_set = 0;
5318 1.1 christos tls_clear = TLS_LD;
5319 1.1 christos break;
5320 1.1 christos
5321 1.1 christos case R_PPC_GOT_TLSGD16:
5322 1.1 christos case R_PPC_GOT_TLSGD16_LO:
5323 1.1 christos expecting_tls_get_addr = 1;
5324 1.1 christos /* Fall thru */
5325 1.1 christos
5326 1.1 christos case R_PPC_GOT_TLSGD16_HI:
5327 1.1 christos case R_PPC_GOT_TLSGD16_HA:
5328 1.1 christos if (is_local)
5329 1.1 christos /* GD -> LE */
5330 1.1 christos tls_set = 0;
5331 1.1 christos else
5332 1.1 christos /* GD -> IE */
5333 1.1 christos tls_set = TLS_TLS | TLS_TPRELGD;
5334 1.1 christos tls_clear = TLS_GD;
5335 1.1 christos break;
5336 1.1 christos
5337 1.1 christos case R_PPC_GOT_TPREL16:
5338 1.1 christos case R_PPC_GOT_TPREL16_LO:
5339 1.1 christos case R_PPC_GOT_TPREL16_HI:
5340 1.1 christos case R_PPC_GOT_TPREL16_HA:
5341 1.1 christos if (is_local)
5342 1.1 christos {
5343 1.1 christos /* IE -> LE */
5344 1.1 christos tls_set = 0;
5345 1.1 christos tls_clear = TLS_TPREL;
5346 1.1 christos break;
5347 1.1 christos }
5348 1.1 christos else
5349 1.1 christos continue;
5350 1.1 christos
5351 1.1 christos case R_PPC_TLSGD:
5352 1.1 christos case R_PPC_TLSLD:
5353 1.1 christos expecting_tls_get_addr = 2;
5354 1.1 christos tls_set = 0;
5355 1.1 christos tls_clear = 0;
5356 1.1 christos break;
5357 1.1 christos
5358 1.1 christos default:
5359 1.1 christos continue;
5360 1.1 christos }
5361 1.1 christos
5362 1.1 christos if (pass == 0)
5363 1.1 christos {
5364 1.1 christos if (!expecting_tls_get_addr
5365 1.1 christos || (expecting_tls_get_addr == 1
5366 1.1 christos && !sec->has_tls_get_addr_call))
5367 1.1 christos continue;
5368 1.1 christos
5369 1.1 christos if (rel + 1 < relend
5370 1.1 christos && branch_reloc_hash_match (ibfd, rel + 1,
5371 1.1 christos htab->tls_get_addr))
5372 1.1 christos continue;
5373 1.1 christos
5374 1.1 christos /* Uh oh, we didn't find the expected call. We
5375 1.1 christos could just mark this symbol to exclude it
5376 1.1 christos from tls optimization but it's safer to skip
5377 1.1 christos the entire optimization. */
5378 1.1 christos info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5379 1.1 christos "TLS optimization disabled\n"),
5380 1.1 christos ibfd, sec, rel->r_offset);
5381 1.1 christos if (elf_section_data (sec)->relocs != relstart)
5382 1.1 christos free (relstart);
5383 1.1 christos return TRUE;
5384 1.1 christos }
5385 1.1 christos
5386 1.1 christos if (expecting_tls_get_addr)
5387 1.1 christos {
5388 1.1 christos struct plt_entry *ent;
5389 1.1 christos bfd_vma addend = 0;
5390 1.1 christos
5391 1.1 christos if (info->shared
5392 1.1 christos && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5393 1.1 christos addend = rel[1].r_addend;
5394 1.1 christos ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5395 1.1 christos got2, addend);
5396 1.1 christos if (ent != NULL && ent->plt.refcount > 0)
5397 1.1 christos ent->plt.refcount -= 1;
5398 1.1 christos
5399 1.1 christos if (expecting_tls_get_addr == 2)
5400 1.1 christos continue;
5401 1.1 christos }
5402 1.1 christos
5403 1.1 christos if (h != NULL)
5404 1.1 christos {
5405 1.1 christos tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5406 1.1 christos got_count = &h->got.refcount;
5407 1.1 christos }
5408 1.1 christos else
5409 1.1 christos {
5410 1.1 christos bfd_signed_vma *lgot_refs;
5411 1.1 christos struct plt_entry **local_plt;
5412 1.1 christos char *lgot_masks;
5413 1.1 christos
5414 1.1 christos if (locsyms == NULL)
5415 1.1 christos {
5416 1.1 christos locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5417 1.1 christos if (locsyms == NULL)
5418 1.1 christos locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5419 1.1 christos symtab_hdr->sh_info,
5420 1.1 christos 0, NULL, NULL, NULL);
5421 1.1 christos if (locsyms == NULL)
5422 1.1 christos {
5423 1.1 christos if (elf_section_data (sec)->relocs != relstart)
5424 1.1 christos free (relstart);
5425 1.1 christos return FALSE;
5426 1.1 christos }
5427 1.1 christos }
5428 1.1 christos lgot_refs = elf_local_got_refcounts (ibfd);
5429 1.1 christos if (lgot_refs == NULL)
5430 1.1 christos abort ();
5431 1.1 christos local_plt = (struct plt_entry **)
5432 1.1 christos (lgot_refs + symtab_hdr->sh_info);
5433 1.1 christos lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5434 1.1 christos tls_mask = &lgot_masks[r_symndx];
5435 1.1 christos got_count = &lgot_refs[r_symndx];
5436 1.1 christos }
5437 1.1 christos
5438 1.1 christos if (tls_set == 0)
5439 1.1 christos {
5440 1.1 christos /* We managed to get rid of a got entry. */
5441 1.1 christos if (*got_count > 0)
5442 1.1 christos *got_count -= 1;
5443 1.1 christos }
5444 1.1 christos
5445 1.1 christos *tls_mask |= tls_set;
5446 1.1 christos *tls_mask &= ~tls_clear;
5447 1.1 christos }
5448 1.1 christos
5449 1.1 christos if (elf_section_data (sec)->relocs != relstart)
5450 1.1 christos free (relstart);
5451 1.1 christos }
5452 1.1 christos
5453 1.1 christos if (locsyms != NULL
5454 1.1 christos && (symtab_hdr->contents != (unsigned char *) locsyms))
5455 1.1 christos {
5456 1.1 christos if (!info->keep_memory)
5457 1.1 christos free (locsyms);
5458 1.1 christos else
5459 1.1 christos symtab_hdr->contents = (unsigned char *) locsyms;
5460 1.1 christos }
5461 1.1 christos }
5462 1.1 christos return TRUE;
5463 1.1 christos }
5464 1.1 christos
5465 1.1 christos /* Return true if we have dynamic relocs that apply to read-only sections. */
5467 1.1 christos
5468 1.1 christos static bfd_boolean
5469 1.1 christos readonly_dynrelocs (struct elf_link_hash_entry *h)
5470 1.1 christos {
5471 1.1 christos struct elf_dyn_relocs *p;
5472 1.1 christos
5473 1.1 christos for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5474 1.1 christos {
5475 1.1 christos asection *s = p->sec->output_section;
5476 1.1 christos
5477 1.1 christos if (s != NULL
5478 1.1 christos && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5479 1.1 christos == (SEC_READONLY | SEC_ALLOC)))
5480 1.1 christos return TRUE;
5481 1.1 christos }
5482 1.1 christos return FALSE;
5483 1.1 christos }
5484 1.1 christos
5485 1.1 christos /* Adjust a symbol defined by a dynamic object and referenced by a
5486 1.1 christos regular object. The current definition is in some section of the
5487 1.1 christos dynamic object, but we're not including those sections. We have to
5488 1.1 christos change the definition to something the rest of the link can
5489 1.1 christos understand. */
5490 1.1 christos
5491 1.1 christos static bfd_boolean
5492 1.1 christos ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5493 1.1 christos struct elf_link_hash_entry *h)
5494 1.1 christos {
5495 1.1 christos struct ppc_elf_link_hash_table *htab;
5496 1.1 christos asection *s;
5497 1.1 christos
5498 1.1 christos #ifdef DEBUG
5499 1.1 christos fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5500 1.1 christos h->root.root.string);
5501 1.1 christos #endif
5502 1.1 christos
5503 1.1 christos /* Make sure we know what is going on here. */
5504 1.1 christos htab = ppc_elf_hash_table (info);
5505 1.1 christos BFD_ASSERT (htab->elf.dynobj != NULL
5506 1.1 christos && (h->needs_plt
5507 1.1 christos || h->type == STT_GNU_IFUNC
5508 1.1 christos || h->u.weakdef != NULL
5509 1.1 christos || (h->def_dynamic
5510 1.1 christos && h->ref_regular
5511 1.1 christos && !h->def_regular)));
5512 1.1 christos
5513 1.1 christos /* Deal with function syms. */
5514 1.1 christos if (h->type == STT_FUNC
5515 1.1 christos || h->type == STT_GNU_IFUNC
5516 1.1 christos || h->needs_plt)
5517 1.1 christos {
5518 1.1 christos /* Clear procedure linkage table information for any symbol that
5519 1.1 christos won't need a .plt entry. */
5520 1.1 christos struct plt_entry *ent;
5521 1.1 christos for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5522 1.1 christos if (ent->plt.refcount > 0)
5523 1.1 christos break;
5524 1.1 christos if (ent == NULL
5525 1.1 christos || (h->type != STT_GNU_IFUNC
5526 1.1 christos && (SYMBOL_CALLS_LOCAL (info, h)
5527 1.1 christos || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5528 1.1 christos && h->root.type == bfd_link_hash_undefweak))))
5529 1.1 christos {
5530 1.3 christos /* A PLT entry is not required/allowed when:
5531 1.1 christos
5532 1.1 christos 1. We are not using ld.so; because then the PLT entry
5533 1.1 christos can't be set up, so we can't use one. In this case,
5534 1.3 christos ppc_elf_adjust_dynamic_symbol won't even be called.
5535 1.3 christos
5536 1.3 christos 2. GC has rendered the entry unused.
5537 1.3 christos
5538 1.3 christos 3. We know for certain that a call to this symbol
5539 1.3 christos will go to this object, or will remain undefined. */
5540 1.3 christos h->plt.plist = NULL;
5541 1.3 christos h->needs_plt = 0;
5542 1.3 christos h->pointer_equality_needed = 0;
5543 1.3 christos }
5544 1.3 christos else
5545 1.3 christos {
5546 1.3 christos /* Taking a function's address in a read/write section
5547 1.3 christos doesn't require us to define the function symbol in the
5548 1.1 christos executable on a plt call stub. A dynamic reloc can
5549 1.1 christos be used instead. */
5550 1.1 christos if (h->pointer_equality_needed
5551 1.1 christos && h->type != STT_GNU_IFUNC
5552 1.1 christos && !htab->is_vxworks
5553 1.1 christos && !ppc_elf_hash_entry (h)->has_sda_refs
5554 1.1 christos && !readonly_dynrelocs (h))
5555 1.1 christos {
5556 1.1 christos h->pointer_equality_needed = 0;
5557 1.3 christos h->non_got_ref = 0;
5558 1.3 christos }
5559 1.3 christos
5560 1.3 christos /* After adjust_dynamic_symbol, non_got_ref set in the
5561 1.3 christos non-shared case means that we have allocated space in
5562 1.3 christos .dynbss for the symbol and thus dyn_relocs for this
5563 1.1 christos symbol should be discarded.
5564 1.1 christos If we get here we know we are making a PLT entry for this
5565 1.5 christos symbol, and in an executable we'd normally resolve
5566 1.1 christos relocations against this symbol to the PLT entry. Allow
5567 1.1 christos dynamic relocs if the reference is weak, and the dynamic
5568 1.1 christos relocs will not cause text relocation. */
5569 1.1 christos else if (!h->ref_regular_nonweak
5570 1.1 christos && h->non_got_ref
5571 1.1 christos && h->type != STT_GNU_IFUNC
5572 1.1 christos && !htab->is_vxworks
5573 1.1 christos && !ppc_elf_hash_entry (h)->has_sda_refs
5574 1.1 christos && !readonly_dynrelocs (h))
5575 1.1 christos h->non_got_ref = 0;
5576 1.1 christos }
5577 1.1 christos h->protected_def = 0;
5578 1.1 christos return TRUE;
5579 1.1 christos }
5580 1.1 christos else
5581 1.1 christos h->plt.plist = NULL;
5582 1.1 christos
5583 1.1 christos /* If this is a weak symbol, and there is a real definition, the
5584 1.1 christos processor independent code will have arranged for us to see the
5585 1.1 christos real definition first, and we can just use the same value. */
5586 1.1 christos if (h->u.weakdef != NULL)
5587 1.1 christos {
5588 1.1 christos BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5589 1.1 christos || h->u.weakdef->root.type == bfd_link_hash_defweak);
5590 1.1 christos h->root.u.def.section = h->u.weakdef->root.u.def.section;
5591 1.1 christos h->root.u.def.value = h->u.weakdef->root.u.def.value;
5592 1.1 christos if (ELIMINATE_COPY_RELOCS)
5593 1.5 christos h->non_got_ref = h->u.weakdef->non_got_ref;
5594 1.5 christos return TRUE;
5595 1.5 christos }
5596 1.5 christos
5597 1.1 christos /* This is a reference to a symbol defined by a dynamic object which
5598 1.1 christos is not a function. */
5599 1.1 christos
5600 1.1 christos /* If we are creating a shared library, we must presume that the
5601 1.5 christos only references to the symbol are via the global offset table.
5602 1.5 christos For such cases we need not do anything here; the relocations will
5603 1.5 christos be handled correctly by relocate_section. */
5604 1.5 christos if (info->shared)
5605 1.5 christos {
5606 1.5 christos h->protected_def = 0;
5607 1.5 christos return TRUE;
5608 1.5 christos }
5609 1.5 christos
5610 1.5 christos /* If there are no references to this symbol that do not use the
5611 1.5 christos GOT, we don't need to generate a copy reloc. */
5612 1.5 christos if (!h->non_got_ref)
5613 1.5 christos {
5614 1.5 christos h->protected_def = 0;
5615 1.5 christos return TRUE;
5616 1.5 christos }
5617 1.5 christos
5618 1.5 christos /* Protected variables do not work with .dynbss. The copy in
5619 1.5 christos .dynbss won't be used by the shared library with the protected
5620 1.5 christos definition for the variable. Editing to PIC, or text relocations
5621 1.5 christos are preferable to an incorrect program. */
5622 1.5 christos if (h->protected_def)
5623 1.5 christos {
5624 1.5 christos if (ELIMINATE_COPY_RELOCS
5625 1.5 christos && ppc_elf_hash_entry (h)->has_addr16_ha
5626 1.5 christos && ppc_elf_hash_entry (h)->has_addr16_lo
5627 1.5 christos && htab->params->pic_fixup == 0
5628 1.1 christos && info->disable_target_specific_optimizations <= 1)
5629 1.1 christos htab->params->pic_fixup = 1;
5630 1.1 christos h->non_got_ref = 0;
5631 1.1 christos return TRUE;
5632 1.1 christos }
5633 1.1 christos
5634 1.1 christos /* If -z nocopyreloc was given, we won't generate them either. */
5635 1.1 christos if (info->nocopyreloc)
5636 1.1 christos {
5637 1.1 christos h->non_got_ref = 0;
5638 1.1 christos return TRUE;
5639 1.1 christos }
5640 1.1 christos
5641 1.1 christos /* If we didn't find any dynamic relocs in read-only sections, then
5642 1.1 christos we'll be keeping the dynamic relocs and avoiding the copy reloc.
5643 1.1 christos We can't do this if there are any small data relocations. This
5644 1.1 christos doesn't work on VxWorks, where we can not have dynamic
5645 1.1 christos relocations (other than copy and jump slot relocations) in an
5646 1.1 christos executable. */
5647 1.1 christos if (ELIMINATE_COPY_RELOCS
5648 1.1 christos && !ppc_elf_hash_entry (h)->has_sda_refs
5649 1.1 christos && !htab->is_vxworks
5650 1.1 christos && !h->def_regular
5651 1.1 christos && !readonly_dynrelocs (h))
5652 1.1 christos {
5653 1.1 christos h->non_got_ref = 0;
5654 1.1 christos return TRUE;
5655 1.1 christos }
5656 1.1 christos
5657 1.1 christos /* We must allocate the symbol in our .dynbss section, which will
5658 1.1 christos become part of the .bss section of the executable. There will be
5659 1.1 christos an entry for this symbol in the .dynsym section. The dynamic
5660 1.1 christos object will contain position independent code, so all references
5661 1.1 christos from the dynamic object to this symbol will go through the global
5662 1.1 christos offset table. The dynamic linker will use the .dynsym entry to
5663 1.1 christos determine the address it must put in the global offset table, so
5664 1.1 christos both the dynamic object and the regular object will refer to the
5665 1.1 christos same memory location for the variable.
5666 1.1 christos
5667 1.1 christos Of course, if the symbol is referenced using SDAREL relocs, we
5668 1.1 christos must instead allocate it in .sbss. */
5669 1.1 christos
5670 1.1 christos if (ppc_elf_hash_entry (h)->has_sda_refs)
5671 1.1 christos s = htab->dynsbss;
5672 1.1 christos else
5673 1.1 christos s = htab->dynbss;
5674 1.1 christos BFD_ASSERT (s != NULL);
5675 1.1 christos
5676 1.1 christos /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5677 1.1 christos copy the initial value out of the dynamic object and into the
5678 1.1 christos runtime process image. We need to remember the offset into the
5679 1.1 christos .rela.bss section we are going to use. */
5680 1.1 christos if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5681 1.3 christos {
5682 1.1 christos asection *srel;
5683 1.1 christos
5684 1.1 christos if (ppc_elf_hash_entry (h)->has_sda_refs)
5685 1.1 christos srel = htab->relsbss;
5686 1.1 christos else
5687 1.1 christos srel = htab->relbss;
5688 1.1 christos BFD_ASSERT (srel != NULL);
5689 1.1 christos srel->size += sizeof (Elf32_External_Rela);
5690 1.1 christos h->needs_copy = 1;
5691 1.1 christos }
5692 1.1 christos
5693 1.1 christos return _bfd_elf_adjust_dynamic_copy (info, h, s);
5694 1.1 christos }
5695 1.1 christos
5696 1.1 christos /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5698 1.1 christos xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5699 1.1 christos specifying the addend on the plt relocation. For -fpic code, the sym
5700 1.1 christos is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5701 1.1 christos xxxxxxxx.got2.plt_pic32.<callee>. */
5702 1.1 christos
5703 1.1 christos static bfd_boolean
5704 1.1 christos add_stub_sym (struct plt_entry *ent,
5705 1.1 christos struct elf_link_hash_entry *h,
5706 1.1 christos struct bfd_link_info *info)
5707 1.1 christos {
5708 1.1 christos struct elf_link_hash_entry *sh;
5709 1.1 christos size_t len1, len2, len3;
5710 1.1 christos char *name;
5711 1.1 christos const char *stub;
5712 1.1 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5713 1.1 christos
5714 1.1 christos if (info->shared)
5715 1.1 christos stub = ".plt_pic32.";
5716 1.1 christos else
5717 1.1 christos stub = ".plt_call32.";
5718 1.1 christos
5719 1.1 christos len1 = strlen (h->root.root.string);
5720 1.1 christos len2 = strlen (stub);
5721 1.1 christos len3 = 0;
5722 1.1 christos if (ent->sec)
5723 1.1 christos len3 = strlen (ent->sec->name);
5724 1.1 christos name = bfd_malloc (len1 + len2 + len3 + 9);
5725 1.1 christos if (name == NULL)
5726 1.1 christos return FALSE;
5727 1.1 christos sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5728 1.1 christos if (ent->sec)
5729 1.1 christos memcpy (name + 8, ent->sec->name, len3);
5730 1.1 christos memcpy (name + 8 + len3, stub, len2);
5731 1.1 christos memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5732 1.5 christos sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5733 1.1 christos if (sh == NULL)
5734 1.1 christos return FALSE;
5735 1.1 christos if (sh->root.type == bfd_link_hash_new)
5736 1.1 christos {
5737 1.1 christos sh->root.type = bfd_link_hash_defined;
5738 1.1 christos sh->root.u.def.section = htab->glink;
5739 1.1 christos sh->root.u.def.value = ent->glink_offset;
5740 1.1 christos sh->ref_regular = 1;
5741 1.1 christos sh->def_regular = 1;
5742 1.1 christos sh->ref_regular_nonweak = 1;
5743 1.1 christos sh->forced_local = 1;
5744 1.1 christos sh->non_elf = 0;
5745 1.1 christos sh->root.linker_def = 1;
5746 1.1 christos }
5747 1.1 christos return TRUE;
5748 1.1 christos }
5749 1.1 christos
5750 1.1 christos /* Allocate NEED contiguous space in .got, and return the offset.
5751 1.1 christos Handles allocation of the got header when crossing 32k. */
5752 1.1 christos
5753 1.1 christos static bfd_vma
5754 1.1 christos allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5755 1.1 christos {
5756 1.1 christos bfd_vma where;
5757 1.1 christos unsigned int max_before_header;
5758 1.1 christos
5759 1.1 christos if (htab->plt_type == PLT_VXWORKS)
5760 1.1 christos {
5761 1.1 christos where = htab->got->size;
5762 1.1 christos htab->got->size += need;
5763 1.1 christos }
5764 1.1 christos else
5765 1.1 christos {
5766 1.1 christos max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5767 1.1 christos if (need <= htab->got_gap)
5768 1.1 christos {
5769 1.1 christos where = max_before_header - htab->got_gap;
5770 1.1 christos htab->got_gap -= need;
5771 1.1 christos }
5772 1.1 christos else
5773 1.1 christos {
5774 1.1 christos if (htab->got->size + need > max_before_header
5775 1.1 christos && htab->got->size <= max_before_header)
5776 1.1 christos {
5777 1.1 christos htab->got_gap = max_before_header - htab->got->size;
5778 1.1 christos htab->got->size = max_before_header + htab->got_header_size;
5779 1.1 christos }
5780 1.1 christos where = htab->got->size;
5781 1.1 christos htab->got->size += need;
5782 1.1 christos }
5783 1.1 christos }
5784 1.1 christos return where;
5785 1.1 christos }
5786 1.1 christos
5787 1.1 christos /* Allocate space in associated reloc sections for dynamic relocs. */
5788 1.1 christos
5789 1.1 christos static bfd_boolean
5790 1.1 christos allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5791 1.1 christos {
5792 1.1 christos struct bfd_link_info *info = inf;
5793 1.1 christos struct ppc_elf_link_hash_entry *eh;
5794 1.1 christos struct ppc_elf_link_hash_table *htab;
5795 1.1 christos struct elf_dyn_relocs *p;
5796 1.1 christos
5797 1.1 christos if (h->root.type == bfd_link_hash_indirect)
5798 1.1 christos return TRUE;
5799 1.1 christos
5800 1.1 christos htab = ppc_elf_hash_table (info);
5801 1.1 christos if (htab->elf.dynamic_sections_created
5802 1.1 christos || h->type == STT_GNU_IFUNC)
5803 1.1 christos {
5804 1.1 christos struct plt_entry *ent;
5805 1.1 christos bfd_boolean doneone = FALSE;
5806 1.1 christos bfd_vma plt_offset = 0, glink_offset = 0;
5807 1.1 christos bfd_boolean dyn;
5808 1.1 christos
5809 1.1 christos for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5810 1.1 christos if (ent->plt.refcount > 0)
5811 1.1 christos {
5812 1.1 christos /* Make sure this symbol is output as a dynamic symbol. */
5813 1.1 christos if (h->dynindx == -1
5814 1.1 christos && !h->forced_local
5815 1.1 christos && !h->def_regular
5816 1.1 christos && htab->elf.dynamic_sections_created)
5817 1.1 christos {
5818 1.1 christos if (! bfd_elf_link_record_dynamic_symbol (info, h))
5819 1.1 christos return FALSE;
5820 1.1 christos }
5821 1.1 christos
5822 1.1 christos dyn = htab->elf.dynamic_sections_created;
5823 1.1 christos if (info->shared
5824 1.1 christos || h->type == STT_GNU_IFUNC
5825 1.1 christos || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5826 1.1 christos {
5827 1.1 christos asection *s = htab->plt;
5828 1.1 christos if (!dyn || h->dynindx == -1)
5829 1.1 christos s = htab->iplt;
5830 1.1 christos
5831 1.1 christos if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5832 1.1 christos {
5833 1.3 christos if (!doneone)
5834 1.1 christos {
5835 1.1 christos plt_offset = s->size;
5836 1.1 christos s->size += 4;
5837 1.1 christos }
5838 1.1 christos ent->plt.offset = plt_offset;
5839 1.1 christos
5840 1.1 christos s = htab->glink;
5841 1.1 christos if (!doneone || info->shared)
5842 1.1 christos {
5843 1.1 christos glink_offset = s->size;
5844 1.1 christos s->size += GLINK_ENTRY_SIZE;
5845 1.1 christos if (h == htab->tls_get_addr
5846 1.3 christos && !htab->params->no_tls_get_addr_opt)
5847 1.1 christos s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5848 1.1 christos }
5849 1.1 christos if (!doneone
5850 1.1 christos && !info->shared
5851 1.1 christos && h->def_dynamic
5852 1.1 christos && !h->def_regular)
5853 1.1 christos {
5854 1.1 christos h->root.u.def.section = s;
5855 1.1 christos h->root.u.def.value = glink_offset;
5856 1.1 christos }
5857 1.1 christos ent->glink_offset = glink_offset;
5858 1.1 christos
5859 1.1 christos if (htab->params->emit_stub_syms
5860 1.1 christos && !add_stub_sym (ent, h, info))
5861 1.1 christos return FALSE;
5862 1.1 christos }
5863 1.1 christos else
5864 1.1 christos {
5865 1.1 christos if (!doneone)
5866 1.1 christos {
5867 1.1 christos /* If this is the first .plt entry, make room
5868 1.1 christos for the special first entry. */
5869 1.1 christos if (s->size == 0)
5870 1.1 christos s->size += htab->plt_initial_entry_size;
5871 1.1 christos
5872 1.1 christos /* The PowerPC PLT is actually composed of two
5873 1.1 christos parts, the first part is 2 words (for a load
5874 1.1 christos and a jump), and then there is a remaining
5875 1.1 christos word available at the end. */
5876 1.1 christos plt_offset = (htab->plt_initial_entry_size
5877 1.1 christos + (htab->plt_slot_size
5878 1.1 christos * ((s->size
5879 1.1 christos - htab->plt_initial_entry_size)
5880 1.1 christos / htab->plt_entry_size)));
5881 1.1 christos
5882 1.1 christos /* If this symbol is not defined in a regular
5883 1.1 christos file, and we are not generating a shared
5884 1.1 christos library, then set the symbol to this location
5885 1.1 christos in the .plt. This is to avoid text
5886 1.1 christos relocations, and is required to make
5887 1.1 christos function pointers compare as equal between
5888 1.1 christos the normal executable and the shared library. */
5889 1.1 christos if (! info->shared
5890 1.1 christos && h->def_dynamic
5891 1.1 christos && !h->def_regular)
5892 1.1 christos {
5893 1.1 christos h->root.u.def.section = s;
5894 1.1 christos h->root.u.def.value = plt_offset;
5895 1.1 christos }
5896 1.1 christos
5897 1.1 christos /* Make room for this entry. */
5898 1.1 christos s->size += htab->plt_entry_size;
5899 1.1 christos /* After the 8192nd entry, room for two entries
5900 1.1 christos is allocated. */
5901 1.1 christos if (htab->plt_type == PLT_OLD
5902 1.1 christos && (s->size - htab->plt_initial_entry_size)
5903 1.1 christos / htab->plt_entry_size
5904 1.1 christos > PLT_NUM_SINGLE_ENTRIES)
5905 1.1 christos s->size += htab->plt_entry_size;
5906 1.1 christos }
5907 1.1 christos ent->plt.offset = plt_offset;
5908 1.1 christos }
5909 1.1 christos
5910 1.1 christos /* We also need to make an entry in the .rela.plt section. */
5911 1.1 christos if (!doneone)
5912 1.1 christos {
5913 1.1 christos if (!htab->elf.dynamic_sections_created
5914 1.1 christos || h->dynindx == -1)
5915 1.1 christos htab->reliplt->size += sizeof (Elf32_External_Rela);
5916 1.1 christos else
5917 1.1 christos {
5918 1.1 christos htab->relplt->size += sizeof (Elf32_External_Rela);
5919 1.1 christos
5920 1.1 christos if (htab->plt_type == PLT_VXWORKS)
5921 1.1 christos {
5922 1.1 christos /* Allocate space for the unloaded relocations. */
5923 1.1 christos if (!info->shared
5924 1.1 christos && htab->elf.dynamic_sections_created)
5925 1.1 christos {
5926 1.1 christos if (ent->plt.offset
5927 1.1 christos == (bfd_vma) htab->plt_initial_entry_size)
5928 1.1 christos {
5929 1.1 christos htab->srelplt2->size
5930 1.1 christos += (sizeof (Elf32_External_Rela)
5931 1.1 christos * VXWORKS_PLTRESOLVE_RELOCS);
5932 1.1 christos }
5933 1.1 christos
5934 1.1 christos htab->srelplt2->size
5935 1.1 christos += (sizeof (Elf32_External_Rela)
5936 1.1 christos * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
5937 1.1 christos }
5938 1.1 christos
5939 1.1 christos /* Every PLT entry has an associated GOT entry in
5940 1.1 christos .got.plt. */
5941 1.1 christos htab->sgotplt->size += 4;
5942 1.1 christos }
5943 1.1 christos }
5944 1.1 christos doneone = TRUE;
5945 1.1 christos }
5946 1.1 christos }
5947 1.1 christos else
5948 1.1 christos ent->plt.offset = (bfd_vma) -1;
5949 1.1 christos }
5950 1.1 christos else
5951 1.1 christos ent->plt.offset = (bfd_vma) -1;
5952 1.1 christos
5953 1.5 christos if (!doneone)
5954 1.5 christos {
5955 1.5 christos h->plt.plist = NULL;
5956 1.5 christos h->needs_plt = 0;
5957 1.5 christos }
5958 1.5 christos }
5959 1.5 christos else
5960 1.1 christos {
5961 1.1 christos h->plt.plist = NULL;
5962 1.1 christos h->needs_plt = 0;
5963 1.1 christos }
5964 1.1 christos
5965 1.1 christos eh = (struct ppc_elf_link_hash_entry *) h;
5966 1.1 christos if (eh->elf.got.refcount > 0
5967 1.1 christos || (ELIMINATE_COPY_RELOCS
5968 1.1 christos && !eh->elf.def_regular
5969 1.1 christos && eh->elf.protected_def
5970 1.1 christos && eh->has_addr16_ha
5971 1.1 christos && eh->has_addr16_lo
5972 1.1 christos && htab->params->pic_fixup > 0))
5973 1.1 christos {
5974 1.1 christos bfd_boolean dyn;
5975 1.1 christos unsigned int need;
5976 1.1 christos
5977 1.1 christos /* Make sure this symbol is output as a dynamic symbol. */
5978 1.1 christos if (eh->elf.dynindx == -1
5979 1.1 christos && !eh->elf.forced_local
5980 1.1 christos && eh->elf.type != STT_GNU_IFUNC
5981 1.1 christos && htab->elf.dynamic_sections_created)
5982 1.1 christos {
5983 1.1 christos if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
5984 1.1 christos return FALSE;
5985 1.1 christos }
5986 1.1 christos
5987 1.1 christos need = 0;
5988 1.1 christos if ((eh->tls_mask & TLS_TLS) != 0)
5989 1.1 christos {
5990 1.1 christos if ((eh->tls_mask & TLS_LD) != 0)
5991 1.1 christos {
5992 1.1 christos if (!eh->elf.def_dynamic)
5993 1.1 christos /* We'll just use htab->tlsld_got.offset. This should
5994 1.1 christos always be the case. It's a little odd if we have
5995 1.1 christos a local dynamic reloc against a non-local symbol. */
5996 1.1 christos htab->tlsld_got.refcount += 1;
5997 1.1 christos else
5998 1.1 christos need += 8;
5999 1.1 christos }
6000 1.1 christos if ((eh->tls_mask & TLS_GD) != 0)
6001 1.1 christos need += 8;
6002 1.1 christos if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
6003 1.1 christos need += 4;
6004 1.1 christos if ((eh->tls_mask & TLS_DTPREL) != 0)
6005 1.1 christos need += 4;
6006 1.1 christos }
6007 1.1 christos else
6008 1.1 christos need += 4;
6009 1.1 christos if (need == 0)
6010 1.1 christos eh->elf.got.offset = (bfd_vma) -1;
6011 1.1 christos else
6012 1.1 christos {
6013 1.1 christos eh->elf.got.offset = allocate_got (htab, need);
6014 1.1 christos dyn = htab->elf.dynamic_sections_created;
6015 1.1 christos if ((info->shared
6016 1.1 christos || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
6017 1.1 christos && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
6018 1.1 christos || eh->elf.root.type != bfd_link_hash_undefweak))
6019 1.1 christos {
6020 1.1 christos asection *rsec = htab->relgot;
6021 1.1 christos
6022 1.1 christos if (eh->elf.type == STT_GNU_IFUNC)
6023 1.1 christos rsec = htab->reliplt;
6024 1.1 christos /* All the entries we allocated need relocs.
6025 1.1 christos Except LD only needs one. */
6026 1.1 christos if ((eh->tls_mask & TLS_LD) != 0
6027 1.1 christos && eh->elf.def_dynamic)
6028 1.1 christos need -= 4;
6029 1.1 christos rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
6030 1.1 christos }
6031 1.1 christos }
6032 1.1 christos }
6033 1.1 christos else
6034 1.1 christos eh->elf.got.offset = (bfd_vma) -1;
6035 1.1 christos
6036 1.1 christos if (eh->dyn_relocs == NULL
6037 1.1 christos || !htab->elf.dynamic_sections_created)
6038 1.1 christos return TRUE;
6039 1.1 christos
6040 1.1 christos /* In the shared -Bsymbolic case, discard space allocated for
6041 1.1 christos dynamic pc-relative relocs against symbols which turn out to be
6042 1.1 christos defined in regular objects. For the normal shared case, discard
6043 1.1 christos space for relocs that have become local due to symbol visibility
6044 1.1 christos changes. */
6045 1.1 christos
6046 1.1 christos if (info->shared)
6047 1.1 christos {
6048 1.1 christos /* Relocs that use pc_count are those that appear on a call insn,
6049 1.1 christos or certain REL relocs (see must_be_dyn_reloc) that can be
6050 1.1 christos generated via assembly. We want calls to protected symbols to
6051 1.1 christos resolve directly to the function rather than going via the plt.
6052 1.1 christos If people want function pointer comparisons to work as expected
6053 1.1 christos then they should avoid writing weird assembly. */
6054 1.1 christos if (SYMBOL_CALLS_LOCAL (info, h))
6055 1.1 christos {
6056 1.1 christos struct elf_dyn_relocs **pp;
6057 1.1 christos
6058 1.1 christos for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6059 1.1 christos {
6060 1.1 christos p->count -= p->pc_count;
6061 1.1 christos p->pc_count = 0;
6062 1.1 christos if (p->count == 0)
6063 1.1 christos *pp = p->next;
6064 1.1 christos else
6065 1.1 christos pp = &p->next;
6066 1.1 christos }
6067 1.1 christos }
6068 1.1 christos
6069 1.1 christos if (htab->is_vxworks)
6070 1.1 christos {
6071 1.1 christos struct elf_dyn_relocs **pp;
6072 1.1 christos
6073 1.1 christos for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6074 1.1 christos {
6075 1.1 christos if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
6076 1.1 christos *pp = p->next;
6077 1.1 christos else
6078 1.1 christos pp = &p->next;
6079 1.1 christos }
6080 1.1 christos }
6081 1.1 christos
6082 1.1 christos /* Discard relocs on undefined symbols that must be local. */
6083 1.1 christos if (eh->dyn_relocs != NULL
6084 1.1 christos && h->root.type == bfd_link_hash_undefined
6085 1.1 christos && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6086 1.1 christos || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6087 1.1 christos eh->dyn_relocs = NULL;
6088 1.1 christos
6089 1.1 christos /* Also discard relocs on undefined weak syms with non-default
6090 1.1 christos visibility. */
6091 1.1 christos if (eh->dyn_relocs != NULL
6092 1.1 christos && h->root.type == bfd_link_hash_undefweak)
6093 1.1 christos {
6094 1.1 christos if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6095 1.1 christos eh->dyn_relocs = NULL;
6096 1.1 christos
6097 1.1 christos /* Make sure undefined weak symbols are output as a dynamic
6098 1.1 christos symbol in PIEs. */
6099 1.1 christos else if (h->dynindx == -1
6100 1.1 christos && !h->forced_local
6101 1.1 christos && !h->def_regular)
6102 1.5 christos {
6103 1.5 christos if (! bfd_elf_link_record_dynamic_symbol (info, h))
6104 1.5 christos return FALSE;
6105 1.5 christos }
6106 1.5 christos }
6107 1.1 christos }
6108 1.1 christos else if (ELIMINATE_COPY_RELOCS)
6109 1.1 christos {
6110 1.1 christos /* For the non-shared case, discard space for relocs against
6111 1.1 christos symbols which turn out to need copy relocs or are not
6112 1.1 christos dynamic. */
6113 1.1 christos
6114 1.1 christos if (!h->non_got_ref
6115 1.1 christos && !h->def_regular
6116 1.1 christos && !(h->protected_def
6117 1.1 christos && eh->has_addr16_ha
6118 1.1 christos && eh->has_addr16_lo
6119 1.1 christos && htab->params->pic_fixup > 0))
6120 1.1 christos {
6121 1.1 christos /* Make sure this symbol is output as a dynamic symbol.
6122 1.1 christos Undefined weak syms won't yet be marked as dynamic. */
6123 1.1 christos if (h->dynindx == -1
6124 1.1 christos && !h->forced_local)
6125 1.1 christos {
6126 1.1 christos if (! bfd_elf_link_record_dynamic_symbol (info, h))
6127 1.1 christos return FALSE;
6128 1.1 christos }
6129 1.1 christos
6130 1.1 christos /* If that succeeded, we know we'll be keeping all the
6131 1.1 christos relocs. */
6132 1.1 christos if (h->dynindx != -1)
6133 1.1 christos goto keep;
6134 1.1 christos }
6135 1.1 christos
6136 1.1 christos eh->dyn_relocs = NULL;
6137 1.1 christos
6138 1.1 christos keep: ;
6139 1.1 christos }
6140 1.1 christos
6141 1.1 christos /* Finally, allocate space. */
6142 1.1 christos for (p = eh->dyn_relocs; p != NULL; p = p->next)
6143 1.1 christos {
6144 1.1 christos asection *sreloc = elf_section_data (p->sec)->sreloc;
6145 1.1 christos if (eh->elf.type == STT_GNU_IFUNC)
6146 1.1 christos sreloc = htab->reliplt;
6147 1.1 christos sreloc->size += p->count * sizeof (Elf32_External_Rela);
6148 1.1 christos }
6149 1.1 christos
6150 1.1 christos return TRUE;
6151 1.1 christos }
6152 1.1 christos
6153 1.1 christos /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6154 1.1 christos read-only sections. */
6155 1.1 christos
6156 1.1 christos static bfd_boolean
6157 1.1 christos maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
6158 1.1 christos {
6159 1.1 christos if (h->root.type == bfd_link_hash_indirect)
6160 1.1 christos return TRUE;
6161 1.1 christos
6162 1.1 christos if (readonly_dynrelocs (h))
6163 1.1 christos {
6164 1.1 christos ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
6165 1.1 christos
6166 1.1 christos /* Not an error, just cut short the traversal. */
6167 1.1 christos return FALSE;
6168 1.1 christos }
6169 1.1 christos return TRUE;
6170 1.1 christos }
6171 1.1 christos
6172 1.1 christos static const unsigned char glink_eh_frame_cie[] =
6173 1.1 christos {
6174 1.1 christos 0, 0, 0, 16, /* length. */
6175 1.1 christos 0, 0, 0, 0, /* id. */
6176 1.3 christos 1, /* CIE version. */
6177 1.1 christos 'z', 'R', 0, /* Augmentation string. */
6178 1.1 christos 4, /* Code alignment. */
6179 1.1 christos 0x7c, /* Data alignment. */
6180 1.1 christos 65, /* RA reg. */
6181 1.1 christos 1, /* Augmentation size. */
6182 1.1 christos DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6183 1.1 christos DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6184 1.1 christos };
6185 1.1 christos
6186 1.1 christos /* Set the sizes of the dynamic sections. */
6187 1.1 christos
6188 1.1 christos static bfd_boolean
6189 1.1 christos ppc_elf_size_dynamic_sections (bfd *output_bfd,
6190 1.1 christos struct bfd_link_info *info)
6191 1.1 christos {
6192 1.1 christos struct ppc_elf_link_hash_table *htab;
6193 1.1 christos asection *s;
6194 1.1 christos bfd_boolean relocs;
6195 1.1 christos bfd *ibfd;
6196 1.1 christos
6197 1.1 christos #ifdef DEBUG
6198 1.1 christos fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6199 1.1 christos #endif
6200 1.1 christos
6201 1.1 christos htab = ppc_elf_hash_table (info);
6202 1.1 christos BFD_ASSERT (htab->elf.dynobj != NULL);
6203 1.1 christos
6204 1.1 christos if (elf_hash_table (info)->dynamic_sections_created)
6205 1.1 christos {
6206 1.1 christos /* Set the contents of the .interp section to the interpreter. */
6207 1.1 christos if (info->executable)
6208 1.1 christos {
6209 1.1 christos s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6210 1.3 christos BFD_ASSERT (s != NULL);
6211 1.1 christos s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6212 1.1 christos s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6213 1.1 christos }
6214 1.1 christos }
6215 1.1 christos
6216 1.1 christos if (htab->plt_type == PLT_OLD)
6217 1.1 christos htab->got_header_size = 16;
6218 1.1 christos else if (htab->plt_type == PLT_NEW)
6219 1.1 christos htab->got_header_size = 12;
6220 1.1 christos
6221 1.1 christos /* Set up .got offsets for local syms, and space for local dynamic
6222 1.1 christos relocs. */
6223 1.1 christos for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6224 1.1 christos {
6225 1.1 christos bfd_signed_vma *local_got;
6226 1.1 christos bfd_signed_vma *end_local_got;
6227 1.1 christos struct plt_entry **local_plt;
6228 1.1 christos struct plt_entry **end_local_plt;
6229 1.1 christos char *lgot_masks;
6230 1.1 christos bfd_size_type locsymcount;
6231 1.1 christos Elf_Internal_Shdr *symtab_hdr;
6232 1.1 christos
6233 1.1 christos if (!is_ppc_elf (ibfd))
6234 1.1 christos continue;
6235 1.1 christos
6236 1.1 christos for (s = ibfd->sections; s != NULL; s = s->next)
6237 1.1 christos {
6238 1.1 christos struct ppc_dyn_relocs *p;
6239 1.1 christos
6240 1.1 christos for (p = ((struct ppc_dyn_relocs *)
6241 1.1 christos elf_section_data (s)->local_dynrel);
6242 1.1 christos p != NULL;
6243 1.1 christos p = p->next)
6244 1.1 christos {
6245 1.1 christos if (!bfd_is_abs_section (p->sec)
6246 1.1 christos && bfd_is_abs_section (p->sec->output_section))
6247 1.1 christos {
6248 1.1 christos /* Input section has been discarded, either because
6249 1.1 christos it is a copy of a linkonce section or due to
6250 1.1 christos linker script /DISCARD/, so we'll be discarding
6251 1.1 christos the relocs too. */
6252 1.1 christos }
6253 1.1 christos else if (htab->is_vxworks
6254 1.1 christos && strcmp (p->sec->output_section->name,
6255 1.1 christos ".tls_vars") == 0)
6256 1.1 christos {
6257 1.1 christos /* Relocations in vxworks .tls_vars sections are
6258 1.1 christos handled specially by the loader. */
6259 1.1 christos }
6260 1.1 christos else if (p->count != 0)
6261 1.1 christos {
6262 1.1 christos asection *sreloc = elf_section_data (p->sec)->sreloc;
6263 1.1 christos if (p->ifunc)
6264 1.1 christos sreloc = htab->reliplt;
6265 1.1 christos sreloc->size += p->count * sizeof (Elf32_External_Rela);
6266 1.1 christos if ((p->sec->output_section->flags
6267 1.1 christos & (SEC_READONLY | SEC_ALLOC))
6268 1.1 christos == (SEC_READONLY | SEC_ALLOC))
6269 1.1 christos info->flags |= DF_TEXTREL;
6270 1.1 christos }
6271 1.1 christos }
6272 1.1 christos }
6273 1.1 christos
6274 1.1 christos local_got = elf_local_got_refcounts (ibfd);
6275 1.1 christos if (!local_got)
6276 1.1 christos continue;
6277 1.1 christos
6278 1.1 christos symtab_hdr = &elf_symtab_hdr (ibfd);
6279 1.1 christos locsymcount = symtab_hdr->sh_info;
6280 1.1 christos end_local_got = local_got + locsymcount;
6281 1.1 christos local_plt = (struct plt_entry **) end_local_got;
6282 1.1 christos end_local_plt = local_plt + locsymcount;
6283 1.1 christos lgot_masks = (char *) end_local_plt;
6284 1.1 christos
6285 1.1 christos for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6286 1.1 christos if (*local_got > 0)
6287 1.1 christos {
6288 1.1 christos unsigned int need = 0;
6289 1.1 christos if ((*lgot_masks & TLS_TLS) != 0)
6290 1.1 christos {
6291 1.1 christos if ((*lgot_masks & TLS_GD) != 0)
6292 1.1 christos need += 8;
6293 1.1 christos if ((*lgot_masks & TLS_LD) != 0)
6294 1.1 christos htab->tlsld_got.refcount += 1;
6295 1.1 christos if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6296 1.1 christos need += 4;
6297 1.1 christos if ((*lgot_masks & TLS_DTPREL) != 0)
6298 1.1 christos need += 4;
6299 1.1 christos }
6300 1.1 christos else
6301 1.1 christos need += 4;
6302 1.1 christos if (need == 0)
6303 1.1 christos *local_got = (bfd_vma) -1;
6304 1.1 christos else
6305 1.1 christos {
6306 1.1 christos *local_got = allocate_got (htab, need);
6307 1.1 christos if (info->shared)
6308 1.1 christos {
6309 1.1 christos asection *srel = htab->relgot;
6310 1.1 christos if ((*lgot_masks & PLT_IFUNC) != 0)
6311 1.1 christos srel = htab->reliplt;
6312 1.1 christos srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6313 1.1 christos }
6314 1.1 christos }
6315 1.1 christos }
6316 1.1 christos else
6317 1.1 christos *local_got = (bfd_vma) -1;
6318 1.1 christos
6319 1.1 christos if (htab->is_vxworks)
6320 1.1 christos continue;
6321 1.1 christos
6322 1.1 christos /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6323 1.1 christos for (; local_plt < end_local_plt; ++local_plt)
6324 1.1 christos {
6325 1.1 christos struct plt_entry *ent;
6326 1.1 christos bfd_boolean doneone = FALSE;
6327 1.1 christos bfd_vma plt_offset = 0, glink_offset = 0;
6328 1.1 christos
6329 1.1 christos for (ent = *local_plt; ent != NULL; ent = ent->next)
6330 1.1 christos if (ent->plt.refcount > 0)
6331 1.1 christos {
6332 1.1 christos s = htab->iplt;
6333 1.1 christos
6334 1.1 christos if (!doneone)
6335 1.1 christos {
6336 1.1 christos plt_offset = s->size;
6337 1.1 christos s->size += 4;
6338 1.1 christos }
6339 1.1 christos ent->plt.offset = plt_offset;
6340 1.1 christos
6341 1.1 christos s = htab->glink;
6342 1.1 christos if (!doneone || info->shared)
6343 1.1 christos {
6344 1.1 christos glink_offset = s->size;
6345 1.1 christos s->size += GLINK_ENTRY_SIZE;
6346 1.1 christos }
6347 1.1 christos ent->glink_offset = glink_offset;
6348 1.1 christos
6349 1.1 christos if (!doneone)
6350 1.1 christos {
6351 1.1 christos htab->reliplt->size += sizeof (Elf32_External_Rela);
6352 1.1 christos doneone = TRUE;
6353 1.1 christos }
6354 1.1 christos }
6355 1.1 christos else
6356 1.1 christos ent->plt.offset = (bfd_vma) -1;
6357 1.1 christos }
6358 1.1 christos }
6359 1.1 christos
6360 1.1 christos /* Allocate space for global sym dynamic relocs. */
6361 1.1 christos elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6362 1.1 christos
6363 1.1 christos if (htab->tlsld_got.refcount > 0)
6364 1.1 christos {
6365 1.1 christos htab->tlsld_got.offset = allocate_got (htab, 8);
6366 1.1 christos if (info->shared)
6367 1.1 christos htab->relgot->size += sizeof (Elf32_External_Rela);
6368 1.1 christos }
6369 1.1 christos else
6370 1.1 christos htab->tlsld_got.offset = (bfd_vma) -1;
6371 1.1 christos
6372 1.1 christos if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
6373 1.1 christos {
6374 1.1 christos unsigned int g_o_t = 32768;
6375 1.1 christos
6376 1.1 christos /* If we haven't allocated the header, do so now. When we get here,
6377 1.1 christos for old plt/got the got size will be 0 to 32764 (not allocated),
6378 1.1 christos or 32780 to 65536 (header allocated). For new plt/got, the
6379 1.1 christos corresponding ranges are 0 to 32768 and 32780 to 65536. */
6380 1.3 christos if (htab->got->size <= 32768)
6381 1.3 christos {
6382 1.3 christos g_o_t = htab->got->size;
6383 1.3 christos if (htab->plt_type == PLT_OLD)
6384 1.3 christos g_o_t += 4;
6385 1.3 christos htab->got->size += htab->got_header_size;
6386 1.3 christos }
6387 1.3 christos
6388 1.3 christos htab->elf.hgot->root.u.def.value = g_o_t;
6389 1.3 christos }
6390 1.3 christos if (info->shared)
6391 1.3 christos {
6392 1.3 christos struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6393 1.1 christos
6394 1.1 christos sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6395 1.1 christos sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6396 1.1 christos }
6397 1.1 christos if (info->emitrelocations)
6398 1.1 christos {
6399 1.1 christos struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6400 1.1 christos
6401 1.1 christos if (sda != NULL && sda->ref_regular)
6402 1.1 christos sda->root.u.def.section->flags |= SEC_KEEP;
6403 1.3 christos sda = htab->sdata[1].sym;
6404 1.3 christos if (sda != NULL && sda->ref_regular)
6405 1.1 christos sda->root.u.def.section->flags |= SEC_KEEP;
6406 1.1 christos }
6407 1.3 christos
6408 1.1 christos if (htab->glink != NULL
6409 1.1 christos && htab->glink->size != 0
6410 1.1 christos && htab->elf.dynamic_sections_created)
6411 1.1 christos {
6412 1.1 christos htab->glink_pltresolve = htab->glink->size;
6413 1.1 christos /* Space for the branch table. */
6414 1.1 christos htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6415 1.1 christos /* Pad out to align the start of PLTresolve. */
6416 1.1 christos htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6417 1.1 christos ? 63 : 15);
6418 1.1 christos htab->glink->size += GLINK_PLTRESOLVE;
6419 1.1 christos
6420 1.1 christos if (htab->params->emit_stub_syms)
6421 1.1 christos {
6422 1.1 christos struct elf_link_hash_entry *sh;
6423 1.1 christos sh = elf_link_hash_lookup (&htab->elf, "__glink",
6424 1.5 christos TRUE, FALSE, FALSE);
6425 1.1 christos if (sh == NULL)
6426 1.1 christos return FALSE;
6427 1.1 christos if (sh->root.type == bfd_link_hash_new)
6428 1.1 christos {
6429 1.1 christos sh->root.type = bfd_link_hash_defined;
6430 1.1 christos sh->root.u.def.section = htab->glink;
6431 1.1 christos sh->root.u.def.value = htab->glink_pltresolve;
6432 1.1 christos sh->ref_regular = 1;
6433 1.1 christos sh->def_regular = 1;
6434 1.1 christos sh->ref_regular_nonweak = 1;
6435 1.1 christos sh->forced_local = 1;
6436 1.1 christos sh->non_elf = 0;
6437 1.1 christos sh->root.linker_def = 1;
6438 1.1 christos }
6439 1.1 christos sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6440 1.5 christos TRUE, FALSE, FALSE);
6441 1.1 christos if (sh == NULL)
6442 1.1 christos return FALSE;
6443 1.1 christos if (sh->root.type == bfd_link_hash_new)
6444 1.1 christos {
6445 1.1 christos sh->root.type = bfd_link_hash_defined;
6446 1.1 christos sh->root.u.def.section = htab->glink;
6447 1.1 christos sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6448 1.1 christos sh->ref_regular = 1;
6449 1.1 christos sh->def_regular = 1;
6450 1.1 christos sh->ref_regular_nonweak = 1;
6451 1.1 christos sh->forced_local = 1;
6452 1.1 christos sh->non_elf = 0;
6453 1.1 christos sh->root.linker_def = 1;
6454 1.1 christos }
6455 1.1 christos }
6456 1.1 christos }
6457 1.1 christos
6458 1.1 christos if (htab->glink != NULL
6459 1.1 christos && htab->glink->size != 0
6460 1.1 christos && htab->glink_eh_frame != NULL
6461 1.1 christos && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6462 1.1 christos && _bfd_elf_eh_frame_present (info))
6463 1.1 christos {
6464 1.1 christos s = htab->glink_eh_frame;
6465 1.1 christos s->size = sizeof (glink_eh_frame_cie) + 20;
6466 1.1 christos if (info->shared)
6467 1.1 christos {
6468 1.1 christos s->size += 4;
6469 1.1 christos if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6470 1.1 christos s->size += 4;
6471 1.1 christos }
6472 1.1 christos }
6473 1.1 christos
6474 1.1 christos /* We've now determined the sizes of the various dynamic sections.
6475 1.1 christos Allocate memory for them. */
6476 1.1 christos relocs = FALSE;
6477 1.1 christos for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6478 1.1 christos {
6479 1.1 christos bfd_boolean strip_section = TRUE;
6480 1.1 christos
6481 1.1 christos if ((s->flags & SEC_LINKER_CREATED) == 0)
6482 1.1 christos continue;
6483 1.1 christos
6484 1.1 christos if (s == htab->plt
6485 1.1 christos || s == htab->got)
6486 1.1 christos {
6487 1.1 christos /* We'd like to strip these sections if they aren't needed, but if
6488 1.3 christos we've exported dynamic symbols from them we must leave them.
6489 1.3 christos It's too late to tell BFD to get rid of the symbols. */
6490 1.3 christos if (htab->elf.hplt != NULL)
6491 1.3 christos strip_section = FALSE;
6492 1.3 christos /* Strip this section if we don't need it; see the
6493 1.1 christos comment below. */
6494 1.1 christos }
6495 1.3 christos else if (s == htab->iplt
6496 1.1 christos || s == htab->glink
6497 1.1 christos || s == htab->glink_eh_frame
6498 1.1 christos || s == htab->sgotplt
6499 1.1 christos || s == htab->sbss
6500 1.1 christos || s == htab->dynbss
6501 1.1 christos || s == htab->dynsbss)
6502 1.1 christos {
6503 1.1 christos /* Strip these too. */
6504 1.1 christos }
6505 1.1 christos else if (s == htab->sdata[0].section
6506 1.1 christos || s == htab->sdata[1].section)
6507 1.1 christos {
6508 1.1 christos strip_section = (s->flags & SEC_KEEP) == 0;
6509 1.1 christos }
6510 1.1 christos else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6511 1.1 christos ".rela"))
6512 1.1 christos {
6513 1.1 christos if (s->size != 0)
6514 1.1 christos {
6515 1.1 christos /* Remember whether there are any relocation sections. */
6516 1.1 christos relocs = TRUE;
6517 1.1 christos
6518 1.1 christos /* We use the reloc_count field as a counter if we need
6519 1.1 christos to copy relocs into the output file. */
6520 1.1 christos s->reloc_count = 0;
6521 1.1 christos }
6522 1.1 christos }
6523 1.1 christos else
6524 1.1 christos {
6525 1.1 christos /* It's not one of our sections, so don't allocate space. */
6526 1.1 christos continue;
6527 1.1 christos }
6528 1.1 christos
6529 1.1 christos if (s->size == 0 && strip_section)
6530 1.1 christos {
6531 1.1 christos /* If we don't need this section, strip it from the
6532 1.1 christos output file. This is mostly to handle .rela.bss and
6533 1.1 christos .rela.plt. We must create both sections in
6534 1.1 christos create_dynamic_sections, because they must be created
6535 1.1 christos before the linker maps input sections to output
6536 1.1 christos sections. The linker does that before
6537 1.1 christos adjust_dynamic_symbol is called, and it is that
6538 1.1 christos function which decides whether anything needs to go
6539 1.1 christos into these sections. */
6540 1.1 christos s->flags |= SEC_EXCLUDE;
6541 1.1 christos continue;
6542 1.1 christos }
6543 1.1 christos
6544 1.1 christos if ((s->flags & SEC_HAS_CONTENTS) == 0)
6545 1.1 christos continue;
6546 1.1 christos
6547 1.1 christos /* Allocate memory for the section contents. */
6548 1.1 christos s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6549 1.1 christos if (s->contents == NULL)
6550 1.1 christos return FALSE;
6551 1.1 christos }
6552 1.1 christos
6553 1.1 christos if (htab->elf.dynamic_sections_created)
6554 1.1 christos {
6555 1.1 christos /* Add some entries to the .dynamic section. We fill in the
6556 1.1 christos values later, in ppc_elf_finish_dynamic_sections, but we
6557 1.1 christos must add the entries now so that we get the correct size for
6558 1.1 christos the .dynamic section. The DT_DEBUG entry is filled in by the
6559 1.1 christos dynamic linker and used by the debugger. */
6560 1.1 christos #define add_dynamic_entry(TAG, VAL) \
6561 1.1 christos _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6562 1.1 christos
6563 1.1 christos if (info->executable)
6564 1.1 christos {
6565 1.3 christos if (!add_dynamic_entry (DT_DEBUG, 0))
6566 1.3 christos return FALSE;
6567 1.3 christos }
6568 1.1 christos
6569 1.1 christos if (htab->plt != NULL && htab->plt->size != 0)
6570 1.1 christos {
6571 1.3 christos if (!add_dynamic_entry (DT_PLTGOT, 0)
6572 1.1 christos || !add_dynamic_entry (DT_PLTRELSZ, 0)
6573 1.1 christos || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6574 1.1 christos || !add_dynamic_entry (DT_JMPREL, 0))
6575 1.1 christos return FALSE;
6576 1.1 christos }
6577 1.1 christos
6578 1.1 christos if (htab->plt_type == PLT_NEW
6579 1.1 christos && htab->glink != NULL
6580 1.1 christos && htab->glink->size != 0)
6581 1.1 christos {
6582 1.1 christos if (!add_dynamic_entry (DT_PPC_GOT, 0))
6583 1.1 christos return FALSE;
6584 1.1 christos if (!htab->params->no_tls_get_addr_opt
6585 1.1 christos && htab->tls_get_addr != NULL
6586 1.1 christos && htab->tls_get_addr->plt.plist != NULL
6587 1.1 christos && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6588 1.1 christos return FALSE;
6589 1.1 christos }
6590 1.1 christos
6591 1.1 christos if (relocs)
6592 1.1 christos {
6593 1.1 christos if (!add_dynamic_entry (DT_RELA, 0)
6594 1.1 christos || !add_dynamic_entry (DT_RELASZ, 0)
6595 1.1 christos || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6596 1.1 christos return FALSE;
6597 1.1 christos }
6598 1.1 christos
6599 1.1 christos /* If any dynamic relocs apply to a read-only section, then we
6600 1.1 christos need a DT_TEXTREL entry. */
6601 1.1 christos if ((info->flags & DF_TEXTREL) == 0)
6602 1.1 christos elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6603 1.1 christos info);
6604 1.1 christos
6605 1.1 christos if ((info->flags & DF_TEXTREL) != 0)
6606 1.1 christos {
6607 1.1 christos if (!add_dynamic_entry (DT_TEXTREL, 0))
6608 1.1 christos return FALSE;
6609 1.1 christos }
6610 1.1 christos if (htab->is_vxworks
6611 1.1 christos && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6612 1.1 christos return FALSE;
6613 1.1 christos }
6614 1.1 christos #undef add_dynamic_entry
6615 1.1 christos
6616 1.1 christos if (htab->glink_eh_frame != NULL
6617 1.1 christos && htab->glink_eh_frame->contents != NULL)
6618 1.1 christos {
6619 1.1 christos unsigned char *p = htab->glink_eh_frame->contents;
6620 1.1 christos bfd_vma val;
6621 1.1 christos
6622 1.1 christos memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6623 1.1 christos /* CIE length (rewrite in case little-endian). */
6624 1.1 christos bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6625 1.1 christos p += sizeof (glink_eh_frame_cie);
6626 1.1 christos /* FDE length. */
6627 1.1 christos val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6628 1.1 christos bfd_put_32 (htab->elf.dynobj, val, p);
6629 1.1 christos p += 4;
6630 1.1 christos /* CIE pointer. */
6631 1.1 christos val = p - htab->glink_eh_frame->contents;
6632 1.1 christos bfd_put_32 (htab->elf.dynobj, val, p);
6633 1.1 christos p += 4;
6634 1.1 christos /* Offset to .glink. Set later. */
6635 1.1 christos p += 4;
6636 1.1 christos /* .glink size. */
6637 1.1 christos bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6638 1.1 christos p += 4;
6639 1.1 christos /* Augmentation. */
6640 1.1 christos p += 1;
6641 1.1 christos
6642 1.1 christos if (info->shared
6643 1.1 christos && htab->elf.dynamic_sections_created)
6644 1.1 christos {
6645 1.1 christos bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6646 1.1 christos if (adv < 64)
6647 1.1 christos *p++ = DW_CFA_advance_loc + adv;
6648 1.1 christos else if (adv < 256)
6649 1.1 christos {
6650 1.1 christos *p++ = DW_CFA_advance_loc1;
6651 1.1 christos *p++ = adv;
6652 1.1 christos }
6653 1.1 christos else if (adv < 65536)
6654 1.1 christos {
6655 1.1 christos *p++ = DW_CFA_advance_loc2;
6656 1.1 christos bfd_put_16 (htab->elf.dynobj, adv, p);
6657 1.1 christos p += 2;
6658 1.1 christos }
6659 1.1 christos else
6660 1.1 christos {
6661 1.1 christos *p++ = DW_CFA_advance_loc4;
6662 1.1 christos bfd_put_32 (htab->elf.dynobj, adv, p);
6663 1.1 christos p += 4;
6664 1.1 christos }
6665 1.1 christos *p++ = DW_CFA_register;
6666 1.3 christos *p++ = 65;
6667 1.3 christos p++;
6668 1.3 christos *p++ = DW_CFA_advance_loc + 4;
6669 1.3 christos *p++ = DW_CFA_restore_extended;
6670 1.3 christos *p++ = 65;
6671 1.3 christos }
6672 1.3 christos BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6673 1.3 christos == htab->glink_eh_frame->size);
6674 1.3 christos }
6675 1.3 christos
6676 1.3 christos return TRUE;
6677 1.3 christos }
6678 1.3 christos
6679 1.3 christos /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6680 1.3 christos if it looks like nothing is using them. */
6681 1.3 christos
6682 1.3 christos static void
6683 1.3 christos maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6684 1.3 christos {
6685 1.3 christos struct elf_link_hash_entry *sda = lsect->sym;
6686 1.3 christos
6687 1.3 christos if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6688 1.3 christos {
6689 1.3 christos asection *s;
6690 1.3 christos
6691 1.3 christos s = bfd_get_section_by_name (output_bfd, lsect->name);
6692 1.3 christos if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6693 1.3 christos {
6694 1.3 christos s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6695 1.3 christos if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6696 1.3 christos {
6697 1.3 christos sda->def_regular = 0;
6698 1.3 christos /* This is somewhat magic. See elf_link_output_extsym. */
6699 1.3 christos sda->ref_dynamic = 1;
6700 1.3 christos sda->forced_local = 0;
6701 1.3 christos }
6702 1.3 christos }
6703 1.3 christos }
6704 1.3 christos }
6705 1.3 christos
6706 1.1 christos void
6707 1.1 christos ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6708 1.1 christos {
6709 1.1 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6710 1.1 christos
6711 1.1 christos if (htab != NULL)
6712 1.1 christos {
6713 1.1 christos maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6714 1.1 christos maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6715 1.1 christos }
6716 1.1 christos }
6717 1.1 christos
6718 1.1 christos
6719 1.1 christos /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6720 1.1 christos
6721 1.1 christos static bfd_boolean
6722 1.1 christos ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6723 1.1 christos {
6724 1.1 christos if (h->plt.plist != NULL
6725 1.1 christos && !h->def_regular
6726 1.1 christos && (!h->pointer_equality_needed
6727 1.1 christos || !h->ref_regular_nonweak))
6728 1.1 christos return FALSE;
6729 1.1 christos
6730 1.3 christos return _bfd_elf_hash_symbol (h);
6731 1.1 christos }
6732 1.1 christos
6733 1.1 christos #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6735 1.1 christos
6736 1.1 christos /* Relaxation trampolines. r12 is available for clobbering (r11, is
6737 1.1 christos used for some functions that are allowed to break the ABI). */
6738 1.1 christos static const int shared_stub_entry[] =
6739 1.1 christos {
6740 1.1 christos 0x7c0802a6, /* mflr 0 */
6741 1.1 christos 0x429f0005, /* bcl 20, 31, .Lxxx */
6742 1.1 christos 0x7d8802a6, /* mflr 12 */
6743 1.1 christos 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6744 1.3 christos 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6745 1.3 christos 0x7c0803a6, /* mtlr 0 */
6746 1.3 christos 0x7d8903a6, /* mtctr 12 */
6747 1.5 christos 0x4e800420, /* bctr */
6748 1.3 christos };
6749 1.3 christos
6750 1.3 christos static const int stub_entry[] =
6751 1.3 christos {
6752 1.3 christos 0x3d800000, /* lis 12,xxx@ha */
6753 1.3 christos 0x398c0000, /* addi 12,12,xxx@l */
6754 1.3 christos 0x7d8903a6, /* mtctr 12 */
6755 1.1 christos 0x4e800420, /* bctr */
6756 1.1 christos };
6757 1.1 christos
6758 1.1 christos struct ppc_elf_relax_info
6759 1.1 christos {
6760 1.1 christos unsigned int workaround_size;
6761 1.5 christos unsigned int picfixup_size;
6762 1.1 christos };
6763 1.5 christos
6764 1.1 christos /* This function implements long branch trampolines, and the ppc476
6765 1.1 christos icache bug workaround. Any section needing trampolines or patch
6766 1.1 christos space for the workaround has its size extended so that we can
6767 1.1 christos add trampolines at the end of the section. */
6768 1.1 christos
6769 1.1 christos static bfd_boolean
6770 1.1 christos ppc_elf_relax_section (bfd *abfd,
6771 1.1 christos asection *isec,
6772 1.1 christos struct bfd_link_info *link_info,
6773 1.1 christos bfd_boolean *again)
6774 1.1 christos {
6775 1.3 christos struct one_branch_fixup
6776 1.5 christos {
6777 1.3 christos struct one_branch_fixup *next;
6778 1.1 christos asection *tsec;
6779 1.3 christos /* Final link, can use the symbol offset. For a
6780 1.1 christos relocatable link we use the symbol's index. */
6781 1.5 christos bfd_vma toff;
6782 1.1 christos bfd_vma trampoff;
6783 1.1 christos };
6784 1.1 christos
6785 1.1 christos Elf_Internal_Shdr *symtab_hdr;
6786 1.1 christos bfd_byte *contents = NULL;
6787 1.3 christos Elf_Internal_Sym *isymbuf = NULL;
6788 1.1 christos Elf_Internal_Rela *internal_relocs = NULL;
6789 1.1 christos Elf_Internal_Rela *irel, *irelend = NULL;
6790 1.3 christos struct one_branch_fixup *branch_fixups = NULL;
6791 1.3 christos struct ppc_elf_relax_info *relax_info = NULL;
6792 1.1 christos unsigned changes = 0;
6793 1.1 christos bfd_boolean workaround_change;
6794 1.1 christos struct ppc_elf_link_hash_table *htab;
6795 1.1 christos bfd_size_type trampbase, trampoff, newsize, picfixup_size;
6796 1.1 christos asection *got2;
6797 1.1 christos bfd_boolean maybe_pasted;
6798 1.3 christos
6799 1.3 christos *again = FALSE;
6800 1.3 christos
6801 1.3 christos /* No need to do anything with non-alloc or non-code sections. */
6802 1.3 christos if ((isec->flags & SEC_ALLOC) == 0
6803 1.3 christos || (isec->flags & SEC_CODE) == 0
6804 1.3 christos || (isec->flags & SEC_LINKER_CREATED) != 0
6805 1.3 christos || isec->size < 4)
6806 1.3 christos return TRUE;
6807 1.3 christos
6808 1.3 christos /* We cannot represent the required PIC relocs in the output, so don't
6809 1.3 christos do anything. The linker doesn't support mixing -shared and -r
6810 1.3 christos anyway. */
6811 1.3 christos if (link_info->relocatable && link_info->shared)
6812 1.3 christos return TRUE;
6813 1.5 christos
6814 1.5 christos htab = ppc_elf_hash_table (link_info);
6815 1.3 christos if (htab == NULL)
6816 1.3 christos return TRUE;
6817 1.3 christos
6818 1.3 christos isec->size = (isec->size + 3) & -4;
6819 1.3 christos if (isec->rawsize == 0)
6820 1.3 christos isec->rawsize = isec->size;
6821 1.3 christos trampbase = isec->size;
6822 1.3 christos
6823 1.3 christos BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6824 1.3 christos || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6825 1.3 christos isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6826 1.1 christos
6827 1.1 christos if (htab->params->ppc476_workaround
6828 1.1 christos || htab->params->pic_fixup > 0)
6829 1.1 christos {
6830 1.3 christos if (elf_section_data (isec)->sec_info == NULL)
6831 1.3 christos {
6832 1.1 christos elf_section_data (isec)->sec_info
6833 1.1 christos = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6834 1.1 christos if (elf_section_data (isec)->sec_info == NULL)
6835 1.5 christos return FALSE;
6836 1.5 christos }
6837 1.5 christos relax_info = elf_section_data (isec)->sec_info;
6838 1.1 christos trampbase -= relax_info->workaround_size;
6839 1.3 christos }
6840 1.3 christos
6841 1.1 christos maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6842 1.3 christos || strcmp (isec->output_section->name, ".fini") == 0);
6843 1.3 christos /* Space for a branch around any trampolines. */
6844 1.3 christos trampoff = trampbase;
6845 1.3 christos if (maybe_pasted && trampbase == isec->rawsize)
6846 1.3 christos trampoff += 4;
6847 1.1 christos
6848 1.3 christos symtab_hdr = &elf_symtab_hdr (abfd);
6849 1.1 christos picfixup_size = 0;
6850 1.3 christos if (htab->params->branch_trampolines
6851 1.3 christos || htab->params->pic_fixup > 0)
6852 1.3 christos {
6853 1.3 christos /* Get a copy of the native relocations. */
6854 1.3 christos if (isec->reloc_count != 0)
6855 1.3 christos {
6856 1.5 christos internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6857 1.3 christos link_info->keep_memory);
6858 1.5 christos if (internal_relocs == NULL)
6859 1.3 christos goto error_return;
6860 1.3 christos }
6861 1.3 christos
6862 1.3 christos got2 = bfd_get_section_by_name (abfd, ".got2");
6863 1.3 christos
6864 1.3 christos irelend = internal_relocs + isec->reloc_count;
6865 1.3 christos for (irel = internal_relocs; irel < irelend; irel++)
6866 1.3 christos {
6867 1.3 christos unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6868 1.3 christos bfd_vma toff, roff;
6869 1.3 christos asection *tsec;
6870 1.3 christos struct one_branch_fixup *f;
6871 1.3 christos size_t insn_offset = 0;
6872 1.1 christos bfd_vma max_branch_offset = 0, val;
6873 1.3 christos bfd_byte *hit_addr;
6874 1.3 christos unsigned long t0;
6875 1.3 christos struct elf_link_hash_entry *h;
6876 1.3 christos struct plt_entry **plist;
6877 1.3 christos unsigned char sym_type;
6878 1.1 christos
6879 1.5 christos switch (r_type)
6880 1.5 christos {
6881 1.5 christos case R_PPC_REL24:
6882 1.5 christos case R_PPC_LOCAL24PC:
6883 1.5 christos case R_PPC_PLTREL24:
6884 1.3 christos max_branch_offset = 1 << 25;
6885 1.3 christos break;
6886 1.1 christos
6887 1.1 christos case R_PPC_REL14:
6888 1.3 christos case R_PPC_REL14_BRTAKEN:
6889 1.3 christos case R_PPC_REL14_BRNTAKEN:
6890 1.3 christos max_branch_offset = 1 << 15;
6891 1.3 christos break;
6892 1.3 christos
6893 1.3 christos case R_PPC_ADDR16_HA:
6894 1.1 christos if (htab->params->pic_fixup > 0)
6895 1.3 christos break;
6896 1.3 christos continue;
6897 1.3 christos
6898 1.3 christos default:
6899 1.3 christos continue;
6900 1.3 christos }
6901 1.3 christos
6902 1.3 christos /* Get the value of the symbol referred to by the reloc. */
6903 1.3 christos h = NULL;
6904 1.3 christos if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6905 1.3 christos {
6906 1.3 christos /* A local symbol. */
6907 1.3 christos Elf_Internal_Sym *isym;
6908 1.3 christos
6909 1.3 christos /* Read this BFD's local symbols. */
6910 1.3 christos if (isymbuf == NULL)
6911 1.3 christos {
6912 1.3 christos isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6913 1.3 christos if (isymbuf == NULL)
6914 1.3 christos isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6915 1.1 christos symtab_hdr->sh_info, 0,
6916 1.3 christos NULL, NULL, NULL);
6917 1.3 christos if (isymbuf == 0)
6918 1.1 christos goto error_return;
6919 1.3 christos }
6920 1.1 christos isym = isymbuf + ELF32_R_SYM (irel->r_info);
6921 1.3 christos if (isym->st_shndx == SHN_UNDEF)
6922 1.3 christos tsec = bfd_und_section_ptr;
6923 1.1 christos else if (isym->st_shndx == SHN_ABS)
6924 1.3 christos tsec = bfd_abs_section_ptr;
6925 1.3 christos else if (isym->st_shndx == SHN_COMMON)
6926 1.1 christos tsec = bfd_com_section_ptr;
6927 1.3 christos else
6928 1.3 christos tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6929 1.3 christos
6930 1.1 christos toff = isym->st_value;
6931 1.3 christos sym_type = ELF_ST_TYPE (isym->st_info);
6932 1.3 christos }
6933 1.3 christos else
6934 1.3 christos {
6935 1.3 christos /* Global symbol handling. */
6936 1.3 christos unsigned long indx;
6937 1.3 christos
6938 1.3 christos indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6939 1.1 christos h = elf_sym_hashes (abfd)[indx];
6940 1.3 christos
6941 1.3 christos while (h->root.type == bfd_link_hash_indirect
6942 1.1 christos || h->root.type == bfd_link_hash_warning)
6943 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
6944 1.3 christos
6945 1.3 christos if (h->root.type == bfd_link_hash_defined
6946 1.3 christos || h->root.type == bfd_link_hash_defweak)
6947 1.3 christos {
6948 1.3 christos tsec = h->root.u.def.section;
6949 1.3 christos toff = h->root.u.def.value;
6950 1.3 christos }
6951 1.3 christos else if (h->root.type == bfd_link_hash_undefined
6952 1.3 christos || h->root.type == bfd_link_hash_undefweak)
6953 1.1 christos {
6954 1.3 christos tsec = bfd_und_section_ptr;
6955 1.3 christos toff = link_info->relocatable ? indx : 0;
6956 1.3 christos }
6957 1.3 christos else
6958 1.3 christos continue;
6959 1.3 christos
6960 1.3 christos /* If this branch is to __tls_get_addr then we may later
6961 1.3 christos optimise away the call. We won't be needing a long-
6962 1.3 christos branch stub in that case. */
6963 1.3 christos if (link_info->executable
6964 1.3 christos && !link_info->relocatable
6965 1.3 christos && h == htab->tls_get_addr
6966 1.3 christos && irel != internal_relocs)
6967 1.3 christos {
6968 1.3 christos unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
6969 1.3 christos unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
6970 1.3 christos unsigned int tls_mask = 0;
6971 1.3 christos
6972 1.3 christos /* The previous reloc should be one of R_PPC_TLSGD or
6973 1.3 christos R_PPC_TLSLD, or for older object files, a reloc
6974 1.3 christos on the __tls_get_addr arg setup insn. Get tls
6975 1.3 christos mask bits from the symbol on that reloc. */
6976 1.3 christos if (t_symndx < symtab_hdr->sh_info)
6977 1.3 christos {
6978 1.3 christos bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6979 1.1 christos
6980 1.3 christos if (local_got_offsets != NULL)
6981 1.3 christos {
6982 1.3 christos struct plt_entry **local_plt = (struct plt_entry **)
6983 1.1 christos (local_got_offsets + symtab_hdr->sh_info);
6984 1.3 christos char *lgot_masks = (char *)
6985 1.3 christos (local_plt + symtab_hdr->sh_info);
6986 1.3 christos tls_mask = lgot_masks[t_symndx];
6987 1.1 christos }
6988 1.3 christos }
6989 1.3 christos else
6990 1.3 christos {
6991 1.3 christos struct elf_link_hash_entry *th
6992 1.3 christos = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
6993 1.3 christos
6994 1.3 christos while (th->root.type == bfd_link_hash_indirect
6995 1.3 christos || th->root.type == bfd_link_hash_warning)
6996 1.3 christos th = (struct elf_link_hash_entry *) th->root.u.i.link;
6997 1.3 christos
6998 1.3 christos tls_mask
6999 1.3 christos = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
7000 1.3 christos }
7001 1.1 christos
7002 1.3 christos /* The mask bits tell us if the call will be
7003 1.3 christos optimised away. */
7004 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7005 1.5 christos && (t_rtype == R_PPC_TLSGD
7006 1.5 christos || t_rtype == R_PPC_GOT_TLSGD16
7007 1.5 christos || t_rtype == R_PPC_GOT_TLSGD16_LO))
7008 1.5 christos continue;
7009 1.5 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7010 1.5 christos && (t_rtype == R_PPC_TLSLD
7011 1.5 christos || t_rtype == R_PPC_GOT_TLSLD16
7012 1.5 christos || t_rtype == R_PPC_GOT_TLSLD16_LO))
7013 1.5 christos continue;
7014 1.5 christos }
7015 1.5 christos
7016 1.3 christos sym_type = h->type;
7017 1.3 christos }
7018 1.3 christos
7019 1.3 christos if (r_type == R_PPC_ADDR16_HA)
7020 1.3 christos {
7021 1.3 christos if (h != NULL
7022 1.3 christos && !h->def_regular
7023 1.3 christos && h->protected_def
7024 1.3 christos && ppc_elf_hash_entry (h)->has_addr16_ha
7025 1.3 christos && ppc_elf_hash_entry (h)->has_addr16_lo)
7026 1.3 christos picfixup_size += 12;
7027 1.3 christos continue;
7028 1.3 christos }
7029 1.3 christos
7030 1.3 christos /* The condition here under which we call find_plt_ent must
7031 1.3 christos match that in relocate_section. If we call find_plt_ent here
7032 1.3 christos but not in relocate_section, or vice versa, then the branch
7033 1.3 christos destination used here may be incorrect. */
7034 1.3 christos plist = NULL;
7035 1.3 christos if (h != NULL)
7036 1.3 christos {
7037 1.3 christos /* We know is_branch_reloc (r_type) is true. */
7038 1.3 christos if (h->type == STT_GNU_IFUNC
7039 1.3 christos || r_type == R_PPC_PLTREL24)
7040 1.1 christos plist = &h->plt.plist;
7041 1.3 christos }
7042 1.3 christos else if (sym_type == STT_GNU_IFUNC
7043 1.3 christos && elf_local_got_offsets (abfd) != NULL)
7044 1.3 christos {
7045 1.3 christos bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7046 1.3 christos struct plt_entry **local_plt = (struct plt_entry **)
7047 1.3 christos (local_got_offsets + symtab_hdr->sh_info);
7048 1.3 christos plist = local_plt + ELF32_R_SYM (irel->r_info);
7049 1.3 christos }
7050 1.3 christos if (plist != NULL)
7051 1.3 christos {
7052 1.3 christos bfd_vma addend = 0;
7053 1.3 christos struct plt_entry *ent;
7054 1.3 christos
7055 1.3 christos if (r_type == R_PPC_PLTREL24 && link_info->shared)
7056 1.3 christos addend = irel->r_addend;
7057 1.3 christos ent = find_plt_ent (plist, got2, addend);
7058 1.3 christos if (ent != NULL)
7059 1.3 christos {
7060 1.3 christos if (htab->plt_type == PLT_NEW
7061 1.1 christos || h == NULL
7062 1.3 christos || !htab->elf.dynamic_sections_created
7063 1.3 christos || h->dynindx == -1)
7064 1.3 christos {
7065 1.3 christos tsec = htab->glink;
7066 1.1 christos toff = ent->glink_offset;
7067 1.1 christos }
7068 1.3 christos else
7069 1.3 christos {
7070 1.3 christos tsec = htab->plt;
7071 1.3 christos toff = ent->plt.offset;
7072 1.3 christos }
7073 1.3 christos }
7074 1.3 christos }
7075 1.3 christos
7076 1.3 christos /* If the branch and target are in the same section, you have
7077 1.3 christos no hope of adding stubs. We'll error out later should the
7078 1.3 christos branch overflow. */
7079 1.3 christos if (tsec == isec)
7080 1.3 christos continue;
7081 1.3 christos
7082 1.3 christos /* There probably isn't any reason to handle symbols in
7083 1.3 christos SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7084 1.3 christos attribute for a code section, and we are only looking at
7085 1.3 christos branches. However, implement it correctly here as a
7086 1.3 christos reference for other target relax_section functions. */
7087 1.3 christos if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7088 1.3 christos {
7089 1.3 christos /* At this stage in linking, no SEC_MERGE symbol has been
7090 1.3 christos adjusted, so all references to such symbols need to be
7091 1.3 christos passed through _bfd_merged_section_offset. (Later, in
7092 1.3 christos relocate_section, all SEC_MERGE symbols *except* for
7093 1.3 christos section symbols have been adjusted.)
7094 1.3 christos
7095 1.3 christos gas may reduce relocations against symbols in SEC_MERGE
7096 1.3 christos sections to a relocation against the section symbol when
7097 1.3 christos the original addend was zero. When the reloc is against
7098 1.1 christos a section symbol we should include the addend in the
7099 1.3 christos offset passed to _bfd_merged_section_offset, since the
7100 1.3 christos location of interest is the original symbol. On the
7101 1.3 christos other hand, an access to "sym+addend" where "sym" is not
7102 1.3 christos a section symbol should not include the addend; Such an
7103 1.3 christos access is presumed to be an offset from "sym"; The
7104 1.3 christos location of interest is just "sym". */
7105 1.1 christos if (sym_type == STT_SECTION)
7106 1.3 christos toff += irel->r_addend;
7107 1.3 christos
7108 1.3 christos toff
7109 1.3 christos = _bfd_merged_section_offset (abfd, &tsec,
7110 1.3 christos elf_section_data (tsec)->sec_info,
7111 1.3 christos toff);
7112 1.1 christos
7113 1.1 christos if (sym_type != STT_SECTION)
7114 1.3 christos toff += irel->r_addend;
7115 1.3 christos }
7116 1.3 christos /* PLTREL24 addends are special. */
7117 1.3 christos else if (r_type != R_PPC_PLTREL24)
7118 1.3 christos toff += irel->r_addend;
7119 1.3 christos
7120 1.3 christos /* Attempted -shared link of non-pic code loses. */
7121 1.3 christos if ((!link_info->relocatable
7122 1.3 christos && tsec == bfd_und_section_ptr)
7123 1.3 christos || tsec->output_section == NULL
7124 1.3 christos || (tsec->owner != NULL
7125 1.3 christos && (tsec->owner->flags & BFD_PLUGIN) != 0))
7126 1.3 christos continue;
7127 1.3 christos
7128 1.3 christos roff = irel->r_offset;
7129 1.3 christos
7130 1.1 christos /* If the branch is in range, no need to do anything. */
7131 1.3 christos if (tsec != bfd_und_section_ptr
7132 1.3 christos && (!link_info->relocatable
7133 1.5 christos /* A relocatable link may have sections moved during
7134 1.3 christos final link, so do not presume they remain in range. */
7135 1.3 christos || tsec->output_section == isec->output_section))
7136 1.3 christos {
7137 1.3 christos bfd_vma symaddr, reladdr;
7138 1.1 christos
7139 1.3 christos symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7140 1.3 christos reladdr = isec->output_section->vma + isec->output_offset + roff;
7141 1.1 christos if (symaddr - reladdr + max_branch_offset
7142 1.3 christos < 2 * max_branch_offset)
7143 1.3 christos continue;
7144 1.3 christos }
7145 1.3 christos
7146 1.3 christos /* Look for an existing fixup to this address. */
7147 1.1 christos for (f = branch_fixups; f ; f = f->next)
7148 1.3 christos if (f->tsec == tsec && f->toff == toff)
7149 1.3 christos break;
7150 1.3 christos
7151 1.3 christos if (f == NULL)
7152 1.3 christos {
7153 1.3 christos size_t size;
7154 1.3 christos unsigned long stub_rtype;
7155 1.3 christos
7156 1.3 christos val = trampoff - roff;
7157 1.3 christos if (val >= max_branch_offset)
7158 1.3 christos /* Oh dear, we can't reach a trampoline. Don't try to add
7159 1.3 christos one. We'll report an error later. */
7160 1.3 christos continue;
7161 1.3 christos
7162 1.3 christos if (link_info->shared)
7163 1.3 christos {
7164 1.3 christos size = 4 * ARRAY_SIZE (shared_stub_entry);
7165 1.3 christos insn_offset = 12;
7166 1.1 christos }
7167 1.3 christos else
7168 1.3 christos {
7169 1.3 christos size = 4 * ARRAY_SIZE (stub_entry);
7170 1.3 christos insn_offset = 0;
7171 1.3 christos }
7172 1.3 christos stub_rtype = R_PPC_RELAX;
7173 1.3 christos if (tsec == htab->plt
7174 1.3 christos || tsec == htab->glink)
7175 1.3 christos {
7176 1.3 christos stub_rtype = R_PPC_RELAX_PLT;
7177 1.3 christos if (r_type == R_PPC_PLTREL24)
7178 1.5 christos stub_rtype = R_PPC_RELAX_PLTREL24;
7179 1.3 christos }
7180 1.3 christos
7181 1.3 christos /* Hijack the old relocation. Since we need two
7182 1.5 christos relocations for this use a "composite" reloc. */
7183 1.1 christos irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7184 1.3 christos stub_rtype);
7185 1.3 christos irel->r_offset = trampoff + insn_offset;
7186 1.3 christos if (r_type == R_PPC_PLTREL24
7187 1.1 christos && stub_rtype != R_PPC_RELAX_PLTREL24)
7188 1.1 christos irel->r_addend = 0;
7189 1.3 christos
7190 1.3 christos /* Record the fixup so we don't do it again this section. */
7191 1.3 christos f = bfd_malloc (sizeof (*f));
7192 1.3 christos f->next = branch_fixups;
7193 1.3 christos f->tsec = tsec;
7194 1.3 christos f->toff = toff;
7195 1.3 christos f->trampoff = trampoff;
7196 1.3 christos branch_fixups = f;
7197 1.3 christos
7198 1.3 christos trampoff += size;
7199 1.3 christos changes++;
7200 1.3 christos }
7201 1.3 christos else
7202 1.3 christos {
7203 1.1 christos val = f->trampoff - roff;
7204 1.3 christos if (val >= max_branch_offset)
7205 1.1 christos continue;
7206 1.1 christos
7207 1.1 christos /* Nop out the reloc, since we're finalizing things here. */
7208 1.3 christos irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7209 1.3 christos }
7210 1.3 christos
7211 1.3 christos /* Get the section contents. */
7212 1.3 christos if (contents == NULL)
7213 1.3 christos {
7214 1.3 christos /* Get cached copy if it exists. */
7215 1.3 christos if (elf_section_data (isec)->this_hdr.contents != NULL)
7216 1.3 christos contents = elf_section_data (isec)->this_hdr.contents;
7217 1.3 christos /* Go get them off disk. */
7218 1.3 christos else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7219 1.3 christos goto error_return;
7220 1.1 christos }
7221 1.3 christos
7222 1.3 christos /* Fix up the existing branch to hit the trampoline. */
7223 1.3 christos hit_addr = contents + roff;
7224 1.3 christos switch (r_type)
7225 1.3 christos {
7226 1.3 christos case R_PPC_REL24:
7227 1.3 christos case R_PPC_LOCAL24PC:
7228 1.3 christos case R_PPC_PLTREL24:
7229 1.3 christos t0 = bfd_get_32 (abfd, hit_addr);
7230 1.1 christos t0 &= ~0x3fffffc;
7231 1.1 christos t0 |= val & 0x3fffffc;
7232 1.5 christos bfd_put_32 (abfd, t0, hit_addr);
7233 1.1 christos break;
7234 1.5 christos
7235 1.5 christos case R_PPC_REL14:
7236 1.1 christos case R_PPC_REL14_BRTAKEN:
7237 1.1 christos case R_PPC_REL14_BRNTAKEN:
7238 1.3 christos t0 = bfd_get_32 (abfd, hit_addr);
7239 1.1 christos t0 &= ~0xfffc;
7240 1.3 christos t0 |= val & 0xfffc;
7241 1.3 christos bfd_put_32 (abfd, t0, hit_addr);
7242 1.3 christos break;
7243 1.3 christos }
7244 1.3 christos }
7245 1.3 christos
7246 1.3 christos while (branch_fixups != NULL)
7247 1.3 christos {
7248 1.3 christos struct one_branch_fixup *f = branch_fixups;
7249 1.3 christos branch_fixups = branch_fixups->next;
7250 1.3 christos free (f);
7251 1.3 christos }
7252 1.3 christos }
7253 1.3 christos
7254 1.3 christos workaround_change = FALSE;
7255 1.3 christos newsize = trampoff;
7256 1.3 christos if (htab->params->ppc476_workaround
7257 1.3 christos && (!link_info->relocatable
7258 1.3 christos || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7259 1.3 christos {
7260 1.3 christos bfd_vma addr, end_addr;
7261 1.3 christos unsigned int crossings;
7262 1.3 christos bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7263 1.3 christos
7264 1.3 christos addr = isec->output_section->vma + isec->output_offset;
7265 1.3 christos end_addr = addr + trampoff;
7266 1.3 christos addr &= -pagesize;
7267 1.3 christos crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7268 1.1 christos if (crossings != 0)
7269 1.3 christos {
7270 1.3 christos /* Keep space aligned, to ensure the patch code itself does
7271 1.1 christos not cross a page. Don't decrease size calculated on a
7272 1.5 christos previous pass as otherwise we might never settle on a layout. */
7273 1.5 christos newsize = 15 - ((end_addr - 1) & 15);
7274 1.5 christos newsize += crossings * 16;
7275 1.5 christos if (relax_info->workaround_size < newsize)
7276 1.5 christos {
7277 1.5 christos relax_info->workaround_size = newsize;
7278 1.5 christos workaround_change = TRUE;
7279 1.5 christos }
7280 1.5 christos /* Ensure relocate_section is called. */
7281 1.3 christos isec->flags |= SEC_RELOC;
7282 1.1 christos }
7283 1.1 christos newsize = trampoff + relax_info->workaround_size;
7284 1.1 christos }
7285 1.1 christos
7286 1.1 christos if (htab->params->pic_fixup > 0)
7287 1.1 christos {
7288 1.1 christos picfixup_size -= relax_info->picfixup_size;
7289 1.1 christos if (picfixup_size != 0)
7290 1.1 christos relax_info->picfixup_size += picfixup_size;
7291 1.1 christos newsize += relax_info->picfixup_size;
7292 1.1 christos }
7293 1.1 christos
7294 1.1 christos if (changes != 0 || picfixup_size != 0 || workaround_change)
7295 1.1 christos isec->size = newsize;
7296 1.1 christos
7297 1.1 christos if (isymbuf != NULL
7298 1.1 christos && symtab_hdr->contents != (unsigned char *) isymbuf)
7299 1.1 christos {
7300 1.1 christos if (! link_info->keep_memory)
7301 1.1 christos free (isymbuf);
7302 1.1 christos else
7303 1.1 christos {
7304 1.1 christos /* Cache the symbols for elf_link_input_bfd. */
7305 1.1 christos symtab_hdr->contents = (unsigned char *) isymbuf;
7306 1.1 christos }
7307 1.5 christos }
7308 1.1 christos
7309 1.1 christos if (contents != NULL
7310 1.1 christos && elf_section_data (isec)->this_hdr.contents != contents)
7311 1.1 christos {
7312 1.1 christos if (!changes && !link_info->keep_memory)
7313 1.1 christos free (contents);
7314 1.1 christos else
7315 1.1 christos {
7316 1.1 christos /* Cache the section contents for elf_link_input_bfd. */
7317 1.1 christos elf_section_data (isec)->this_hdr.contents = contents;
7318 1.1 christos }
7319 1.1 christos }
7320 1.1 christos
7321 1.1 christos changes += picfixup_size;
7322 1.1 christos if (changes != 0)
7323 1.1 christos {
7324 1.1 christos /* Append sufficient NOP relocs so we can write out relocation
7325 1.1 christos information for the trampolines. */
7326 1.1 christos Elf_Internal_Shdr *rel_hdr;
7327 1.1 christos Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7328 1.1 christos * sizeof (*new_relocs));
7329 1.1 christos unsigned ix;
7330 1.1 christos
7331 1.1 christos if (!new_relocs)
7332 1.1 christos goto error_return;
7333 1.1 christos memcpy (new_relocs, internal_relocs,
7334 1.3 christos isec->reloc_count * sizeof (*new_relocs));
7335 1.3 christos for (ix = changes; ix--;)
7336 1.1 christos {
7337 1.1 christos irel = new_relocs + ix + isec->reloc_count;
7338 1.3 christos
7339 1.1 christos irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7340 1.1 christos }
7341 1.1 christos if (internal_relocs != elf_section_data (isec)->relocs)
7342 1.5 christos free (internal_relocs);
7343 1.3 christos elf_section_data (isec)->relocs = new_relocs;
7344 1.5 christos isec->reloc_count += changes;
7345 1.5 christos rel_hdr = _bfd_elf_single_rel_hdr (isec);
7346 1.3 christos rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7347 1.3 christos }
7348 1.1 christos else if (internal_relocs != NULL
7349 1.1 christos && elf_section_data (isec)->relocs != internal_relocs)
7350 1.1 christos free (internal_relocs);
7351 1.1 christos
7352 1.1 christos *again = changes != 0 || workaround_change;
7353 1.1 christos return TRUE;
7354 1.1 christos
7355 1.1 christos error_return:
7356 1.1 christos while (branch_fixups != NULL)
7357 1.1 christos {
7358 1.1 christos struct one_branch_fixup *f = branch_fixups;
7359 1.1 christos branch_fixups = branch_fixups->next;
7360 1.1 christos free (f);
7361 1.1 christos }
7362 1.1 christos if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7363 1.1 christos free (isymbuf);
7364 1.1 christos if (contents != NULL
7365 1.1 christos && elf_section_data (isec)->this_hdr.contents != contents)
7366 1.1 christos free (contents);
7367 1.1 christos if (internal_relocs != NULL
7368 1.1 christos && elf_section_data (isec)->relocs != internal_relocs)
7369 1.1 christos free (internal_relocs);
7370 1.1 christos return FALSE;
7371 1.1 christos }
7372 1.1 christos
7373 1.1 christos /* What to do when ld finds relocations against symbols defined in
7375 1.1 christos discarded sections. */
7376 1.1 christos
7377 1.1 christos static unsigned int
7378 1.1 christos ppc_elf_action_discarded (asection *sec)
7379 1.1 christos {
7380 1.1 christos if (strcmp (".fixup", sec->name) == 0)
7381 1.1 christos return 0;
7382 1.1 christos
7383 1.1 christos if (strcmp (".got2", sec->name) == 0)
7384 1.1 christos return 0;
7385 1.1 christos
7386 1.1 christos return _bfd_elf_default_action_discarded (sec);
7387 1.1 christos }
7388 1.1 christos
7389 1.1 christos /* Fill in the address for a pointer generated in a linker section. */
7391 1.1 christos
7392 1.1 christos static bfd_vma
7393 1.1 christos elf_finish_pointer_linker_section (bfd *input_bfd,
7394 1.1 christos elf_linker_section_t *lsect,
7395 1.1 christos struct elf_link_hash_entry *h,
7396 1.1 christos bfd_vma relocation,
7397 1.1 christos const Elf_Internal_Rela *rel)
7398 1.1 christos {
7399 1.1 christos elf_linker_section_pointers_t *linker_section_ptr;
7400 1.1 christos
7401 1.1 christos BFD_ASSERT (lsect != NULL);
7402 1.1 christos
7403 1.1 christos if (h != NULL)
7404 1.1 christos {
7405 1.1 christos /* Handle global symbol. */
7406 1.1 christos struct ppc_elf_link_hash_entry *eh;
7407 1.1 christos
7408 1.1 christos eh = (struct ppc_elf_link_hash_entry *) h;
7409 1.1 christos BFD_ASSERT (eh->elf.def_regular);
7410 1.1 christos linker_section_ptr = eh->linker_section_pointer;
7411 1.1 christos }
7412 1.1 christos else
7413 1.1 christos {
7414 1.1 christos /* Handle local symbol. */
7415 1.1 christos unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7416 1.1 christos
7417 1.1 christos BFD_ASSERT (is_ppc_elf (input_bfd));
7418 1.1 christos BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7419 1.1 christos linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7420 1.1 christos }
7421 1.1 christos
7422 1.1 christos linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7423 1.1 christos rel->r_addend,
7424 1.1 christos lsect);
7425 1.1 christos BFD_ASSERT (linker_section_ptr != NULL);
7426 1.1 christos
7427 1.1 christos /* Offset will always be a multiple of four, so use the bottom bit
7428 1.1 christos as a "written" flag. */
7429 1.1 christos if ((linker_section_ptr->offset & 1) == 0)
7430 1.1 christos {
7431 1.1 christos bfd_put_32 (lsect->section->owner,
7432 1.1 christos relocation + linker_section_ptr->addend,
7433 1.1 christos lsect->section->contents + linker_section_ptr->offset);
7434 1.1 christos linker_section_ptr->offset += 1;
7435 1.1 christos }
7436 1.1 christos
7437 1.1 christos relocation = (lsect->section->output_section->vma
7438 1.1 christos + lsect->section->output_offset
7439 1.1 christos + linker_section_ptr->offset - 1
7440 1.1 christos - SYM_VAL (lsect->sym));
7441 1.1 christos
7442 1.1 christos #ifdef DEBUG
7443 1.1 christos fprintf (stderr,
7444 1.1 christos "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7445 1.1 christos lsect->name, (long) relocation, (long) relocation);
7446 1.1 christos #endif
7447 1.1 christos
7448 1.1 christos return relocation;
7449 1.1 christos }
7450 1.1 christos
7451 1.1 christos #define PPC_LO(v) ((v) & 0xffff)
7452 1.1 christos #define PPC_HI(v) (((v) >> 16) & 0xffff)
7453 1.1 christos #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7454 1.1 christos
7455 1.1 christos static void
7456 1.1 christos write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7457 1.1 christos struct bfd_link_info *info)
7458 1.1 christos {
7459 1.1 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7460 1.1 christos bfd *output_bfd = info->output_bfd;
7461 1.1 christos bfd_vma plt;
7462 1.1 christos
7463 1.1 christos plt = ((ent->plt.offset & ~1)
7464 1.1 christos + plt_sec->output_section->vma
7465 1.1 christos + plt_sec->output_offset);
7466 1.1 christos
7467 1.1 christos if (info->shared)
7468 1.1 christos {
7469 1.1 christos bfd_vma got = 0;
7470 1.1 christos
7471 1.1 christos if (ent->addend >= 32768)
7472 1.3 christos got = (ent->addend
7473 1.1 christos + ent->sec->output_section->vma
7474 1.1 christos + ent->sec->output_offset);
7475 1.1 christos else if (htab->elf.hgot != NULL)
7476 1.1 christos got = SYM_VAL (htab->elf.hgot);
7477 1.1 christos
7478 1.1 christos plt -= got;
7479 1.1 christos
7480 1.1 christos if (plt + 0x8000 < 0x10000)
7481 1.1 christos {
7482 1.1 christos bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7483 1.1 christos p += 4;
7484 1.1 christos bfd_put_32 (output_bfd, MTCTR_11, p);
7485 1.1 christos p += 4;
7486 1.1 christos bfd_put_32 (output_bfd, BCTR, p);
7487 1.1 christos p += 4;
7488 1.1 christos bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7489 1.1 christos p += 4;
7490 1.1 christos }
7491 1.1 christos else
7492 1.1 christos {
7493 1.1 christos bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7494 1.1 christos p += 4;
7495 1.1 christos bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7496 1.1 christos p += 4;
7497 1.1 christos bfd_put_32 (output_bfd, MTCTR_11, p);
7498 1.1 christos p += 4;
7499 1.1 christos bfd_put_32 (output_bfd, BCTR, p);
7500 1.1 christos p += 4;
7501 1.1 christos }
7502 1.1 christos }
7503 1.1 christos else
7504 1.1 christos {
7505 1.1 christos bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7506 1.1 christos p += 4;
7507 1.1 christos bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7508 1.1 christos p += 4;
7509 1.1 christos bfd_put_32 (output_bfd, MTCTR_11, p);
7510 1.1 christos p += 4;
7511 1.1 christos bfd_put_32 (output_bfd, BCTR, p);
7512 1.1 christos p += 4;
7513 1.1 christos }
7514 1.1 christos }
7515 1.1 christos
7516 1.1 christos /* Return true if symbol is defined statically. */
7517 1.1 christos
7518 1.1 christos static bfd_boolean
7519 1.1 christos is_static_defined (struct elf_link_hash_entry *h)
7520 1.1 christos {
7521 1.1 christos return ((h->root.type == bfd_link_hash_defined
7522 1.1 christos || h->root.type == bfd_link_hash_defweak)
7523 1.1 christos && h->root.u.def.section != NULL
7524 1.1 christos && h->root.u.def.section->output_section != NULL);
7525 1.1 christos }
7526 1.1 christos
7527 1.1 christos /* If INSN is an opcode that may be used with an @tls operand, return
7528 1.1 christos the transformed insn for TLS optimisation, otherwise return 0. If
7529 1.1 christos REG is non-zero only match an insn with RB or RA equal to REG. */
7530 1.1 christos
7531 1.1 christos unsigned int
7532 1.1 christos _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7533 1.1 christos {
7534 1.1 christos unsigned int rtra;
7535 1.1 christos
7536 1.1 christos if ((insn & (0x3f << 26)) != 31 << 26)
7537 1.1 christos return 0;
7538 1.1 christos
7539 1.1 christos if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7540 1.1 christos rtra = insn & ((1 << 26) - (1 << 16));
7541 1.1 christos else if (((insn >> 16) & 0x1f) == reg)
7542 1.1 christos rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7543 1.1 christos else
7544 1.1 christos return 0;
7545 1.1 christos
7546 1.1 christos if ((insn & (0x3ff << 1)) == 266 << 1)
7547 1.1 christos /* add -> addi. */
7548 1.1 christos insn = 14 << 26;
7549 1.1 christos else if ((insn & (0x1f << 1)) == 23 << 1
7550 1.1 christos && ((insn & (0x1f << 6)) < 14 << 6
7551 1.1 christos || ((insn & (0x1f << 6)) >= 16 << 6
7552 1.1 christos && (insn & (0x1f << 6)) < 24 << 6)))
7553 1.1 christos /* load and store indexed -> dform. */
7554 1.1 christos insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7555 1.1 christos else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7556 1.1 christos /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7557 1.1 christos insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7558 1.1 christos else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7559 1.1 christos /* lwax -> lwa. */
7560 1.1 christos insn = (58 << 26) | 2;
7561 1.1 christos else
7562 1.1 christos return 0;
7563 1.1 christos insn |= rtra;
7564 1.1 christos return insn;
7565 1.1 christos }
7566 1.1 christos
7567 1.1 christos /* If INSN is an opcode that may be used with an @tprel operand, return
7568 1.1 christos the transformed insn for an undefined weak symbol, ie. with the
7569 1.1 christos thread pointer REG operand removed. Otherwise return 0. */
7570 1.1 christos
7571 1.1 christos unsigned int
7572 1.1 christos _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7573 1.1 christos {
7574 1.1 christos if ((insn & (0x1f << 16)) == reg << 16
7575 1.1 christos && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7576 1.1 christos || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7577 1.1 christos || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7578 1.1 christos || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7579 1.1 christos || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7580 1.1 christos || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7581 1.1 christos || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7582 1.1 christos || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7583 1.1 christos || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7584 1.1 christos || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7585 1.1 christos || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7586 1.1 christos || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7587 1.1 christos || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7588 1.1 christos || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7589 1.1 christos || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7590 1.1 christos || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7591 1.1 christos && (insn & 3) != 1)
7592 1.1 christos || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7593 1.1 christos && ((insn & 3) == 0 || (insn & 3) == 3))))
7594 1.1 christos {
7595 1.1 christos insn &= ~(0x1f << 16);
7596 1.1 christos }
7597 1.1 christos else if ((insn & (0x1f << 21)) == reg << 21
7598 1.1 christos && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7599 1.1 christos || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7600 1.1 christos || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7601 1.1 christos {
7602 1.1 christos insn &= ~(0x1f << 21);
7603 1.1 christos insn |= (insn & (0x1f << 16)) << 5;
7604 1.1 christos if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7605 1.1 christos insn -= 2 >> 26; /* convert to ori,oris */
7606 1.1 christos }
7607 1.1 christos else
7608 1.1 christos insn = 0;
7609 1.1 christos return insn;
7610 1.1 christos }
7611 1.1 christos
7612 1.1 christos static bfd_boolean
7613 1.1 christos is_insn_ds_form (unsigned int insn)
7614 1.1 christos {
7615 1.1 christos return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7616 1.1 christos || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7617 1.1 christos || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7618 1.1 christos || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7619 1.1 christos }
7620 1.1 christos
7621 1.1 christos static bfd_boolean
7622 1.1 christos is_insn_dq_form (unsigned int insn)
7623 1.1 christos {
7624 1.1 christos return (insn & (0x3f << 26)) == 56u << 26; /* lq */
7625 1.1 christos }
7626 1.1 christos
7627 1.1 christos /* The RELOCATE_SECTION function is called by the ELF backend linker
7628 1.1 christos to handle the relocations for a section.
7629 1.1 christos
7630 1.1 christos The relocs are always passed as Rela structures; if the section
7631 1.1 christos actually uses Rel structures, the r_addend field will always be
7632 1.1 christos zero.
7633 1.1 christos
7634 1.1 christos This function is responsible for adjust the section contents as
7635 1.1 christos necessary, and (if using Rela relocs and generating a
7636 1.1 christos relocatable output file) adjusting the reloc addend as
7637 1.1 christos necessary.
7638 1.1 christos
7639 1.1 christos This function does not have to worry about setting the reloc
7640 1.1 christos address or the reloc symbol index.
7641 1.1 christos
7642 1.1 christos LOCAL_SYMS is a pointer to the swapped in local symbols.
7643 1.1 christos
7644 1.1 christos LOCAL_SECTIONS is an array giving the section in the input file
7645 1.1 christos corresponding to the st_shndx field of each local symbol.
7646 1.1 christos
7647 1.1 christos The global hash table entry for the global symbols can be found
7648 1.1 christos via elf_sym_hashes (input_bfd).
7649 1.1 christos
7650 1.1 christos When generating relocatable output, this function must handle
7651 1.1 christos STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7652 1.1 christos going to be the section symbol corresponding to the output
7653 1.1 christos section, which means that the addend must be adjusted
7654 1.1 christos accordingly. */
7655 1.1 christos
7656 1.1 christos static bfd_boolean
7657 1.1 christos ppc_elf_relocate_section (bfd *output_bfd,
7658 1.1 christos struct bfd_link_info *info,
7659 1.1 christos bfd *input_bfd,
7660 1.1 christos asection *input_section,
7661 1.5 christos bfd_byte *contents,
7662 1.5 christos Elf_Internal_Rela *relocs,
7663 1.1 christos Elf_Internal_Sym *local_syms,
7664 1.1 christos asection **local_sections)
7665 1.1 christos {
7666 1.1 christos Elf_Internal_Shdr *symtab_hdr;
7667 1.1 christos struct elf_link_hash_entry **sym_hashes;
7668 1.1 christos struct ppc_elf_link_hash_table *htab;
7669 1.1 christos Elf_Internal_Rela *rel;
7670 1.1 christos Elf_Internal_Rela *relend;
7671 1.1 christos Elf_Internal_Rela outrel;
7672 1.1 christos asection *got2;
7673 1.1 christos bfd_vma *local_got_offsets;
7674 1.1 christos bfd_boolean ret = TRUE;
7675 1.1 christos bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
7676 1.1 christos bfd_boolean is_vxworks_tls;
7677 1.1 christos unsigned int picfixup_size = 0;
7678 1.1 christos struct ppc_elf_relax_info *relax_info = NULL;
7679 1.1 christos
7680 1.1 christos #ifdef DEBUG
7681 1.1 christos _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7682 1.1 christos "%ld relocations%s",
7683 1.1 christos input_bfd, input_section,
7684 1.1 christos (long) input_section->reloc_count,
7685 1.1 christos (info->relocatable) ? " (relocatable)" : "");
7686 1.1 christos #endif
7687 1.5 christos
7688 1.5 christos got2 = bfd_get_section_by_name (input_bfd, ".got2");
7689 1.1 christos
7690 1.1 christos /* Initialize howto table if not already done. */
7691 1.1 christos if (!ppc_elf_howto_table[R_PPC_ADDR32])
7692 1.1 christos ppc_elf_howto_init ();
7693 1.1 christos
7694 1.1 christos htab = ppc_elf_hash_table (info);
7695 1.1 christos local_got_offsets = elf_local_got_offsets (input_bfd);
7696 1.1 christos symtab_hdr = &elf_symtab_hdr (input_bfd);
7697 1.1 christos sym_hashes = elf_sym_hashes (input_bfd);
7698 1.1 christos /* We have to handle relocations in vxworks .tls_vars sections
7699 1.1 christos specially, because the dynamic loader is 'weird'. */
7700 1.1 christos is_vxworks_tls = (htab->is_vxworks && info->shared
7701 1.1 christos && !strcmp (input_section->output_section->name,
7702 1.1 christos ".tls_vars"));
7703 1.1 christos if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7704 1.1 christos relax_info = elf_section_data (input_section)->sec_info;
7705 1.1 christos rel = relocs;
7706 1.1 christos relend = relocs + input_section->reloc_count;
7707 1.1 christos for (; rel < relend; rel++)
7708 1.3 christos {
7709 1.1 christos enum elf_ppc_reloc_type r_type;
7710 1.1 christos bfd_vma addend;
7711 1.1 christos bfd_reloc_status_type r;
7712 1.1 christos Elf_Internal_Sym *sym;
7713 1.1 christos asection *sec;
7714 1.1 christos struct elf_link_hash_entry *h;
7715 1.1 christos const char *sym_name;
7716 1.1 christos reloc_howto_type *howto;
7717 1.1 christos unsigned long r_symndx;
7718 1.1 christos bfd_vma relocation;
7719 1.1 christos bfd_vma branch_bit, from;
7720 1.1 christos bfd_boolean unresolved_reloc;
7721 1.1 christos bfd_boolean warned;
7722 1.1 christos unsigned int tls_type, tls_mask, tls_gd;
7723 1.1 christos struct plt_entry **ifunc;
7724 1.1 christos struct reloc_howto_struct alt_howto;
7725 1.1 christos
7726 1.1 christos r_type = ELF32_R_TYPE (rel->r_info);
7727 1.1 christos sym = NULL;
7728 1.1 christos sec = NULL;
7729 1.1 christos h = NULL;
7730 1.1 christos unresolved_reloc = FALSE;
7731 1.1 christos warned = FALSE;
7732 1.1 christos r_symndx = ELF32_R_SYM (rel->r_info);
7733 1.1 christos
7734 1.1 christos if (r_symndx < symtab_hdr->sh_info)
7735 1.1 christos {
7736 1.1 christos sym = local_syms + r_symndx;
7737 1.1 christos sec = local_sections[r_symndx];
7738 1.1 christos sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7739 1.1 christos
7740 1.1 christos relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7741 1.1 christos }
7742 1.1 christos else
7743 1.1 christos {
7744 1.1 christos bfd_boolean ignored;
7745 1.1 christos
7746 1.1 christos RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7747 1.1 christos r_symndx, symtab_hdr, sym_hashes,
7748 1.1 christos h, sec, relocation,
7749 1.1 christos unresolved_reloc, warned, ignored);
7750 1.1 christos
7751 1.1 christos sym_name = h->root.root.string;
7752 1.1 christos }
7753 1.1 christos
7754 1.1 christos if (sec != NULL && discarded_section (sec))
7755 1.1 christos {
7756 1.1 christos /* For relocs against symbols from removed linkonce sections,
7757 1.1 christos or sections discarded by a linker script, we just want the
7758 1.1 christos section contents zeroed. Avoid any special processing. */
7759 1.1 christos howto = NULL;
7760 1.3 christos if (r_type < R_PPC_max)
7761 1.3 christos howto = ppc_elf_howto_table[r_type];
7762 1.3 christos RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
7763 1.3 christos rel, 1, relend, howto, 0, contents);
7764 1.1 christos }
7765 1.1 christos
7766 1.1 christos if (info->relocatable)
7767 1.1 christos {
7768 1.1 christos if (got2 != NULL
7769 1.1 christos && r_type == R_PPC_PLTREL24
7770 1.1 christos && rel->r_addend != 0)
7771 1.1 christos {
7772 1.1 christos /* R_PPC_PLTREL24 is rather special. If non-zero, the
7773 1.1 christos addend specifies the GOT pointer offset within .got2. */
7774 1.1 christos rel->r_addend += got2->output_offset;
7775 1.1 christos }
7776 1.1 christos if (r_type != R_PPC_RELAX_PLT
7777 1.1 christos && r_type != R_PPC_RELAX_PLTREL24
7778 1.1 christos && r_type != R_PPC_RELAX)
7779 1.1 christos continue;
7780 1.1 christos }
7781 1.1 christos
7782 1.1 christos /* TLS optimizations. Replace instruction sequences and relocs
7783 1.1 christos based on information we collected in tls_optimize. We edit
7784 1.1 christos RELOCS so that --emit-relocs will output something sensible
7785 1.1 christos for the final instruction stream. */
7786 1.1 christos tls_mask = 0;
7787 1.1 christos tls_gd = 0;
7788 1.1 christos if (h != NULL)
7789 1.1 christos tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7790 1.1 christos else if (local_got_offsets != NULL)
7791 1.1 christos {
7792 1.1 christos struct plt_entry **local_plt;
7793 1.1 christos char *lgot_masks;
7794 1.1 christos local_plt
7795 1.1 christos = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7796 1.1 christos lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7797 1.1 christos tls_mask = lgot_masks[r_symndx];
7798 1.1 christos }
7799 1.1 christos
7800 1.1 christos /* Ensure reloc mapping code below stays sane. */
7801 1.1 christos if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7802 1.1 christos || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7803 1.1 christos || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7804 1.1 christos || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7805 1.1 christos || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7806 1.1 christos || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7807 1.1 christos || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7808 1.1 christos || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7809 1.1 christos abort ();
7810 1.1 christos switch (r_type)
7811 1.1 christos {
7812 1.1 christos default:
7813 1.1 christos break;
7814 1.1 christos
7815 1.1 christos case R_PPC_GOT_TPREL16:
7816 1.1 christos case R_PPC_GOT_TPREL16_LO:
7817 1.1 christos if ((tls_mask & TLS_TLS) != 0
7818 1.1 christos && (tls_mask & TLS_TPREL) == 0)
7819 1.1 christos {
7820 1.1 christos bfd_vma insn;
7821 1.1 christos
7822 1.1 christos insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
7823 1.1 christos insn &= 31 << 21;
7824 1.1 christos insn |= 0x3c020000; /* addis 0,2,0 */
7825 1.1 christos bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
7826 1.1 christos r_type = R_PPC_TPREL16_HA;
7827 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7828 1.1 christos }
7829 1.1 christos break;
7830 1.1 christos
7831 1.1 christos case R_PPC_TLS:
7832 1.1 christos if ((tls_mask & TLS_TLS) != 0
7833 1.1 christos && (tls_mask & TLS_TPREL) == 0)
7834 1.1 christos {
7835 1.1 christos bfd_vma insn;
7836 1.1 christos
7837 1.1 christos insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7838 1.1 christos insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7839 1.1 christos if (insn == 0)
7840 1.1 christos abort ();
7841 1.1 christos bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7842 1.1 christos r_type = R_PPC_TPREL16_LO;
7843 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7844 1.1 christos
7845 1.1 christos /* Was PPC_TLS which sits on insn boundary, now
7846 1.1 christos PPC_TPREL16_LO which is at low-order half-word. */
7847 1.1 christos rel->r_offset += d_offset;
7848 1.1 christos }
7849 1.1 christos break;
7850 1.1 christos
7851 1.1 christos case R_PPC_GOT_TLSGD16_HI:
7852 1.5 christos case R_PPC_GOT_TLSGD16_HA:
7853 1.1 christos tls_gd = TLS_TPRELGD;
7854 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7855 1.1 christos goto tls_gdld_hi;
7856 1.1 christos break;
7857 1.1 christos
7858 1.1 christos case R_PPC_GOT_TLSLD16_HI:
7859 1.1 christos case R_PPC_GOT_TLSLD16_HA:
7860 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7861 1.1 christos {
7862 1.1 christos tls_gdld_hi:
7863 1.1 christos if ((tls_mask & tls_gd) != 0)
7864 1.1 christos r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7865 1.1 christos + R_PPC_GOT_TPREL16);
7866 1.1 christos else
7867 1.1 christos {
7868 1.1 christos rel->r_offset -= d_offset;
7869 1.1 christos bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7870 1.1 christos r_type = R_PPC_NONE;
7871 1.1 christos }
7872 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7873 1.1 christos }
7874 1.1 christos break;
7875 1.1 christos
7876 1.1 christos case R_PPC_GOT_TLSGD16:
7877 1.1 christos case R_PPC_GOT_TLSGD16_LO:
7878 1.1 christos tls_gd = TLS_TPRELGD;
7879 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7880 1.1 christos goto tls_ldgd_opt;
7881 1.1 christos break;
7882 1.1 christos
7883 1.1 christos case R_PPC_GOT_TLSLD16:
7884 1.1 christos case R_PPC_GOT_TLSLD16_LO:
7885 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7886 1.5 christos {
7887 1.5 christos unsigned int insn1, insn2;
7888 1.5 christos bfd_vma offset;
7889 1.5 christos
7890 1.5 christos tls_ldgd_opt:
7891 1.5 christos offset = (bfd_vma) -1;
7892 1.1 christos /* If not using the newer R_PPC_TLSGD/LD to mark
7893 1.1 christos __tls_get_addr calls, we must trust that the call
7894 1.1 christos stays with its arg setup insns, ie. that the next
7895 1.5 christos reloc is the __tls_get_addr call associated with
7896 1.1 christos the current reloc. Edit both insns. */
7897 1.1 christos if (input_section->has_tls_get_addr_call
7898 1.1 christos && rel + 1 < relend
7899 1.1 christos && branch_reloc_hash_match (input_bfd, rel + 1,
7900 1.1 christos htab->tls_get_addr))
7901 1.1 christos offset = rel[1].r_offset;
7902 1.1 christos /* We read the low GOT_TLS insn because we need to keep
7903 1.1 christos the destination reg. It may be something other than
7904 1.1 christos the usual r3, and moved to r3 before the call by
7905 1.1 christos intervening code. */
7906 1.1 christos insn1 = bfd_get_32 (output_bfd,
7907 1.1 christos contents + rel->r_offset - d_offset);
7908 1.1 christos if ((tls_mask & tls_gd) != 0)
7909 1.1 christos {
7910 1.5 christos /* IE */
7911 1.5 christos insn1 &= (0x1f << 21) | (0x1f << 16);
7912 1.1 christos insn1 |= 32 << 26; /* lwz */
7913 1.1 christos if (offset != (bfd_vma) -1)
7914 1.1 christos {
7915 1.1 christos rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7916 1.1 christos insn2 = 0x7c631214; /* add 3,3,2 */
7917 1.1 christos bfd_put_32 (output_bfd, insn2, contents + offset);
7918 1.1 christos }
7919 1.1 christos r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7920 1.1 christos + R_PPC_GOT_TPREL16);
7921 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7922 1.1 christos }
7923 1.1 christos else
7924 1.1 christos {
7925 1.1 christos /* LE */
7926 1.1 christos insn1 &= 0x1f << 21;
7927 1.1 christos insn1 |= 0x3c020000; /* addis r,2,0 */
7928 1.1 christos if (tls_gd == 0)
7929 1.1 christos {
7930 1.1 christos /* Was an LD reloc. */
7931 1.1 christos for (r_symndx = 0;
7932 1.1 christos r_symndx < symtab_hdr->sh_info;
7933 1.1 christos r_symndx++)
7934 1.1 christos if (local_sections[r_symndx] == sec)
7935 1.1 christos break;
7936 1.1 christos if (r_symndx >= symtab_hdr->sh_info)
7937 1.1 christos r_symndx = STN_UNDEF;
7938 1.1 christos rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7939 1.1 christos if (r_symndx != STN_UNDEF)
7940 1.1 christos rel->r_addend -= (local_syms[r_symndx].st_value
7941 1.1 christos + sec->output_offset
7942 1.1 christos + sec->output_section->vma);
7943 1.1 christos }
7944 1.1 christos r_type = R_PPC_TPREL16_HA;
7945 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7946 1.1 christos if (offset != (bfd_vma) -1)
7947 1.1 christos {
7948 1.1 christos rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7949 1.1 christos rel[1].r_offset = offset + d_offset;
7950 1.1 christos rel[1].r_addend = rel->r_addend;
7951 1.1 christos insn2 = 0x38630000; /* addi 3,3,0 */
7952 1.1 christos bfd_put_32 (output_bfd, insn2, contents + offset);
7953 1.1 christos }
7954 1.1 christos }
7955 1.1 christos bfd_put_32 (output_bfd, insn1,
7956 1.1 christos contents + rel->r_offset - d_offset);
7957 1.1 christos if (tls_gd == 0)
7958 1.1 christos {
7959 1.1 christos /* We changed the symbol on an LD reloc. Start over
7960 1.1 christos in order to get h, sym, sec etc. right. */
7961 1.1 christos rel--;
7962 1.1 christos continue;
7963 1.1 christos }
7964 1.1 christos }
7965 1.1 christos break;
7966 1.1 christos
7967 1.1 christos case R_PPC_TLSGD:
7968 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7969 1.1 christos {
7970 1.1 christos unsigned int insn2;
7971 1.1 christos bfd_vma offset = rel->r_offset;
7972 1.1 christos
7973 1.1 christos if ((tls_mask & TLS_TPRELGD) != 0)
7974 1.1 christos {
7975 1.1 christos /* IE */
7976 1.1 christos r_type = R_PPC_NONE;
7977 1.1 christos insn2 = 0x7c631214; /* add 3,3,2 */
7978 1.1 christos }
7979 1.1 christos else
7980 1.1 christos {
7981 1.1 christos /* LE */
7982 1.1 christos r_type = R_PPC_TPREL16_LO;
7983 1.1 christos rel->r_offset += d_offset;
7984 1.1 christos insn2 = 0x38630000; /* addi 3,3,0 */
7985 1.1 christos }
7986 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7987 1.1 christos bfd_put_32 (output_bfd, insn2, contents + offset);
7988 1.1 christos /* Zap the reloc on the _tls_get_addr call too. */
7989 1.1 christos BFD_ASSERT (offset == rel[1].r_offset);
7990 1.1 christos rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7991 1.1 christos }
7992 1.1 christos break;
7993 1.1 christos
7994 1.1 christos case R_PPC_TLSLD:
7995 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7996 1.1 christos {
7997 1.1 christos unsigned int insn2;
7998 1.1 christos
7999 1.1 christos for (r_symndx = 0;
8000 1.1 christos r_symndx < symtab_hdr->sh_info;
8001 1.1 christos r_symndx++)
8002 1.1 christos if (local_sections[r_symndx] == sec)
8003 1.1 christos break;
8004 1.1 christos if (r_symndx >= symtab_hdr->sh_info)
8005 1.1 christos r_symndx = STN_UNDEF;
8006 1.1 christos rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8007 1.1 christos if (r_symndx != STN_UNDEF)
8008 1.1 christos rel->r_addend -= (local_syms[r_symndx].st_value
8009 1.1 christos + sec->output_offset
8010 1.1 christos + sec->output_section->vma);
8011 1.1 christos
8012 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8013 1.1 christos rel->r_offset += d_offset;
8014 1.1 christos insn2 = 0x38630000; /* addi 3,3,0 */
8015 1.1 christos bfd_put_32 (output_bfd, insn2,
8016 1.1 christos contents + rel->r_offset - d_offset);
8017 1.1 christos /* Zap the reloc on the _tls_get_addr call too. */
8018 1.1 christos BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
8019 1.1 christos rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8020 1.1 christos rel--;
8021 1.1 christos continue;
8022 1.1 christos }
8023 1.1 christos break;
8024 1.1 christos }
8025 1.1 christos
8026 1.1 christos /* Handle other relocations that tweak non-addend part of insn. */
8027 1.1 christos branch_bit = 0;
8028 1.1 christos switch (r_type)
8029 1.1 christos {
8030 1.1 christos default:
8031 1.1 christos break;
8032 1.1 christos
8033 1.1 christos /* Branch taken prediction relocations. */
8034 1.1 christos case R_PPC_ADDR14_BRTAKEN:
8035 1.1 christos case R_PPC_REL14_BRTAKEN:
8036 1.1 christos branch_bit = BRANCH_PREDICT_BIT;
8037 1.1 christos /* Fall thru */
8038 1.1 christos
8039 1.1 christos /* Branch not taken prediction relocations. */
8040 1.1 christos case R_PPC_ADDR14_BRNTAKEN:
8041 1.1 christos case R_PPC_REL14_BRNTAKEN:
8042 1.1 christos {
8043 1.1 christos bfd_vma insn;
8044 1.1 christos
8045 1.1 christos insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
8046 1.5 christos insn &= ~BRANCH_PREDICT_BIT;
8047 1.5 christos insn |= branch_bit;
8048 1.5 christos
8049 1.5 christos from = (rel->r_offset
8050 1.5 christos + input_section->output_offset
8051 1.5 christos + input_section->output_section->vma);
8052 1.5 christos
8053 1.5 christos /* Invert 'y' bit if not the default. */
8054 1.5 christos if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8055 1.5 christos insn ^= BRANCH_PREDICT_BIT;
8056 1.5 christos
8057 1.5 christos bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8058 1.5 christos break;
8059 1.5 christos }
8060 1.5 christos }
8061 1.5 christos
8062 1.5 christos if (ELIMINATE_COPY_RELOCS
8063 1.5 christos && h != NULL
8064 1.5 christos && !h->def_regular
8065 1.5 christos && h->protected_def
8066 1.5 christos && ppc_elf_hash_entry (h)->has_addr16_ha
8067 1.5 christos && ppc_elf_hash_entry (h)->has_addr16_lo
8068 1.5 christos && htab->params->pic_fixup > 0)
8069 1.5 christos {
8070 1.5 christos /* Convert lis;addi or lis;load/store accessing a protected
8071 1.5 christos variable defined in a shared library to PIC. */
8072 1.5 christos unsigned int insn;
8073 1.5 christos
8074 1.5 christos if (r_type == R_PPC_ADDR16_HA)
8075 1.5 christos {
8076 1.5 christos insn = bfd_get_32 (output_bfd,
8077 1.5 christos contents + rel->r_offset - d_offset);
8078 1.5 christos if ((insn & (0x3f << 26)) == (15u << 26)
8079 1.5 christos && (insn & (0x1f << 16)) == 0 /* lis */)
8080 1.5 christos {
8081 1.5 christos bfd_byte *p;
8082 1.5 christos bfd_vma off;
8083 1.5 christos bfd_vma got_addr;
8084 1.5 christos
8085 1.5 christos p = (contents + input_section->size
8086 1.5 christos - relax_info->workaround_size
8087 1.5 christos - relax_info->picfixup_size
8088 1.5 christos + picfixup_size);
8089 1.5 christos off = (p - contents) - (rel->r_offset - d_offset);
8090 1.5 christos if (off > 0x1fffffc || (off & 3) != 0)
8091 1.5 christos info->callbacks->einfo
8092 1.5 christos (_("%P: %H: fixup branch overflow\n"),
8093 1.5 christos input_bfd, input_section, rel->r_offset);
8094 1.5 christos
8095 1.5 christos bfd_put_32 (output_bfd, B | off,
8096 1.5 christos contents + rel->r_offset - d_offset);
8097 1.5 christos got_addr = (htab->got->output_section->vma
8098 1.5 christos + htab->got->output_offset
8099 1.5 christos + (h->got.offset & ~1));
8100 1.5 christos rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8101 1.5 christos rel->r_addend = got_addr;
8102 1.5 christos rel->r_offset = (p - contents) + d_offset;
8103 1.5 christos insn &= ~0xffff;
8104 1.5 christos insn |= ((unsigned int )(got_addr + 0x8000) >> 16) & 0xffff;
8105 1.5 christos bfd_put_32 (output_bfd, insn, p);
8106 1.5 christos
8107 1.5 christos /* Convert lis to lwz, loading address from GOT. */
8108 1.5 christos insn &= ~0xffff;
8109 1.5 christos insn ^= (32u ^ 15u) << 26;
8110 1.5 christos insn |= (insn & (0x1f << 21)) >> 5;
8111 1.5 christos insn |= got_addr & 0xffff;
8112 1.5 christos bfd_put_32 (output_bfd, insn, p + 4);
8113 1.5 christos
8114 1.5 christos bfd_put_32 (output_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8115 1.5 christos picfixup_size += 12;
8116 1.5 christos
8117 1.5 christos /* Use one of the spare relocs, so --emit-relocs
8118 1.5 christos output is reasonable. */
8119 1.5 christos memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8120 1.5 christos rel++;
8121 1.5 christos rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
8122 1.5 christos rel->r_offset += 4;
8123 1.5 christos
8124 1.5 christos /* Continue on as if we had a got reloc, to output
8125 1.5 christos dynamic reloc. */
8126 1.5 christos r_type = R_PPC_GOT16_LO;
8127 1.5 christos }
8128 1.5 christos else
8129 1.5 christos info->callbacks->einfo
8130 1.5 christos (_("%P: %H: error: %s with unexpected instruction %x\n"),
8131 1.5 christos input_bfd, input_section, rel->r_offset,
8132 1.5 christos "R_PPC_ADDR16_HA", insn);
8133 1.5 christos }
8134 1.5 christos else if (r_type == R_PPC_ADDR16_LO)
8135 1.5 christos {
8136 1.5 christos insn = bfd_get_32 (output_bfd,
8137 1.5 christos contents + rel->r_offset - d_offset);
8138 1.5 christos if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8139 1.5 christos || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8140 1.5 christos || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8141 1.5 christos || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8142 1.5 christos || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8143 1.5 christos || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8144 1.5 christos || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8145 1.5 christos || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8146 1.5 christos || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8147 1.5 christos || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8148 1.5 christos || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8149 1.5 christos || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8150 1.5 christos || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8151 1.5 christos || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8152 1.5 christos || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8153 1.5 christos && (insn & 3) != 1)
8154 1.1 christos || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8155 1.1 christos && ((insn & 3) == 0 || (insn & 3) == 3)))
8156 1.1 christos {
8157 1.1 christos /* Arrange to apply the reloc addend, if any. */
8158 1.1 christos relocation = 0;
8159 1.1 christos unresolved_reloc = FALSE;
8160 1.1 christos rel->r_info = ELF32_R_INFO (0, r_type);
8161 1.1 christos }
8162 1.1 christos else
8163 1.1 christos info->callbacks->einfo
8164 1.1 christos (_("%P: %H: error: %s with unexpected instruction %x\n"),
8165 1.1 christos input_bfd, input_section, rel->r_offset,
8166 1.1 christos "R_PPC_ADDR16_LO", insn);
8167 1.1 christos }
8168 1.1 christos }
8169 1.1 christos
8170 1.1 christos ifunc = NULL;
8171 1.1 christos if (!htab->is_vxworks)
8172 1.1 christos {
8173 1.1 christos struct plt_entry *ent;
8174 1.1 christos
8175 1.1 christos if (h != NULL)
8176 1.1 christos {
8177 1.1 christos if (h->type == STT_GNU_IFUNC)
8178 1.1 christos ifunc = &h->plt.plist;
8179 1.1 christos }
8180 1.1 christos else if (local_got_offsets != NULL
8181 1.1 christos && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8182 1.1 christos {
8183 1.1 christos struct plt_entry **local_plt;
8184 1.1 christos
8185 1.1 christos local_plt = (struct plt_entry **) (local_got_offsets
8186 1.1 christos + symtab_hdr->sh_info);
8187 1.1 christos ifunc = local_plt + r_symndx;
8188 1.1 christos }
8189 1.1 christos
8190 1.1 christos ent = NULL;
8191 1.1 christos if (ifunc != NULL
8192 1.1 christos && (!info->shared
8193 1.1 christos || is_branch_reloc (r_type)))
8194 1.1 christos {
8195 1.1 christos addend = 0;
8196 1.1 christos if (r_type == R_PPC_PLTREL24 && info->shared)
8197 1.1 christos addend = rel->r_addend;
8198 1.1 christos ent = find_plt_ent (ifunc, got2, addend);
8199 1.1 christos }
8200 1.1 christos if (ent != NULL)
8201 1.1 christos {
8202 1.1 christos if (h == NULL && (ent->plt.offset & 1) == 0)
8203 1.1 christos {
8204 1.1 christos Elf_Internal_Rela rela;
8205 1.1 christos bfd_byte *loc;
8206 1.1 christos
8207 1.1 christos rela.r_offset = (htab->iplt->output_section->vma
8208 1.1 christos + htab->iplt->output_offset
8209 1.1 christos + ent->plt.offset);
8210 1.1 christos rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8211 1.1 christos rela.r_addend = relocation;
8212 1.1 christos loc = htab->reliplt->contents;
8213 1.1 christos loc += (htab->reliplt->reloc_count++
8214 1.3 christos * sizeof (Elf32_External_Rela));
8215 1.3 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8216 1.1 christos
8217 1.1 christos ent->plt.offset |= 1;
8218 1.1 christos }
8219 1.1 christos if (h == NULL && (ent->glink_offset & 1) == 0)
8220 1.1 christos {
8221 1.1 christos unsigned char *p = ((unsigned char *) htab->glink->contents
8222 1.1 christos + ent->glink_offset);
8223 1.1 christos write_glink_stub (ent, htab->iplt, p, info);
8224 1.1 christos ent->glink_offset |= 1;
8225 1.1 christos }
8226 1.1 christos
8227 1.1 christos unresolved_reloc = FALSE;
8228 1.1 christos if (htab->plt_type == PLT_NEW
8229 1.1 christos || !htab->elf.dynamic_sections_created
8230 1.1 christos || h == NULL
8231 1.1 christos || h->dynindx == -1)
8232 1.1 christos relocation = (htab->glink->output_section->vma
8233 1.1 christos + htab->glink->output_offset
8234 1.1 christos + (ent->glink_offset & ~1));
8235 1.1 christos else
8236 1.1 christos relocation = (htab->plt->output_section->vma
8237 1.1 christos + htab->plt->output_offset
8238 1.1 christos + ent->plt.offset);
8239 1.1 christos }
8240 1.1 christos }
8241 1.1 christos
8242 1.1 christos addend = rel->r_addend;
8243 1.1 christos tls_type = 0;
8244 1.1 christos howto = NULL;
8245 1.1 christos if (r_type < R_PPC_max)
8246 1.1 christos howto = ppc_elf_howto_table[r_type];
8247 1.1 christos switch (r_type)
8248 1.1 christos {
8249 1.1 christos default:
8250 1.1 christos info->callbacks->einfo
8251 1.1 christos (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8252 1.1 christos input_bfd, (int) r_type, sym_name);
8253 1.1 christos
8254 1.1 christos bfd_set_error (bfd_error_bad_value);
8255 1.1 christos ret = FALSE;
8256 1.1 christos continue;
8257 1.1 christos
8258 1.1 christos case R_PPC_NONE:
8259 1.1 christos case R_PPC_TLS:
8260 1.1 christos case R_PPC_TLSGD:
8261 1.1 christos case R_PPC_TLSLD:
8262 1.1 christos case R_PPC_EMB_MRKREF:
8263 1.1 christos case R_PPC_GNU_VTINHERIT:
8264 1.1 christos case R_PPC_GNU_VTENTRY:
8265 1.1 christos continue;
8266 1.1 christos
8267 1.1 christos /* GOT16 relocations. Like an ADDR16 using the symbol's
8268 1.1 christos address in the GOT as relocation value instead of the
8269 1.1 christos symbol's value itself. Also, create a GOT entry for the
8270 1.1 christos symbol and put the symbol value there. */
8271 1.1 christos case R_PPC_GOT_TLSGD16:
8272 1.1 christos case R_PPC_GOT_TLSGD16_LO:
8273 1.1 christos case R_PPC_GOT_TLSGD16_HI:
8274 1.1 christos case R_PPC_GOT_TLSGD16_HA:
8275 1.1 christos tls_type = TLS_TLS | TLS_GD;
8276 1.1 christos goto dogot;
8277 1.1 christos
8278 1.1 christos case R_PPC_GOT_TLSLD16:
8279 1.1 christos case R_PPC_GOT_TLSLD16_LO:
8280 1.1 christos case R_PPC_GOT_TLSLD16_HI:
8281 1.1 christos case R_PPC_GOT_TLSLD16_HA:
8282 1.1 christos tls_type = TLS_TLS | TLS_LD;
8283 1.1 christos goto dogot;
8284 1.1 christos
8285 1.1 christos case R_PPC_GOT_TPREL16:
8286 1.1 christos case R_PPC_GOT_TPREL16_LO:
8287 1.1 christos case R_PPC_GOT_TPREL16_HI:
8288 1.1 christos case R_PPC_GOT_TPREL16_HA:
8289 1.1 christos tls_type = TLS_TLS | TLS_TPREL;
8290 1.1 christos goto dogot;
8291 1.1 christos
8292 1.1 christos case R_PPC_GOT_DTPREL16:
8293 1.1 christos case R_PPC_GOT_DTPREL16_LO:
8294 1.1 christos case R_PPC_GOT_DTPREL16_HI:
8295 1.1 christos case R_PPC_GOT_DTPREL16_HA:
8296 1.1 christos tls_type = TLS_TLS | TLS_DTPREL;
8297 1.1 christos goto dogot;
8298 1.1 christos
8299 1.1 christos case R_PPC_GOT16:
8300 1.1 christos case R_PPC_GOT16_LO:
8301 1.1 christos case R_PPC_GOT16_HI:
8302 1.1 christos case R_PPC_GOT16_HA:
8303 1.1 christos tls_mask = 0;
8304 1.1 christos dogot:
8305 1.1 christos {
8306 1.1 christos /* Relocation is to the entry for this symbol in the global
8307 1.1 christos offset table. */
8308 1.1 christos bfd_vma off;
8309 1.1 christos bfd_vma *offp;
8310 1.1 christos unsigned long indx;
8311 1.1 christos
8312 1.1 christos if (htab->got == NULL)
8313 1.1 christos abort ();
8314 1.1 christos
8315 1.1 christos indx = 0;
8316 1.1 christos if (tls_type == (TLS_TLS | TLS_LD)
8317 1.1 christos && (h == NULL
8318 1.1 christos || !h->def_dynamic))
8319 1.1 christos offp = &htab->tlsld_got.offset;
8320 1.1 christos else if (h != NULL)
8321 1.1 christos {
8322 1.1 christos bfd_boolean dyn;
8323 1.1 christos dyn = htab->elf.dynamic_sections_created;
8324 1.1 christos if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
8325 1.1 christos || (info->shared
8326 1.1 christos && SYMBOL_REFERENCES_LOCAL (info, h)))
8327 1.1 christos /* This is actually a static link, or it is a
8328 1.1 christos -Bsymbolic link and the symbol is defined
8329 1.1 christos locally, or the symbol was forced to be local
8330 1.1 christos because of a version file. */
8331 1.1 christos ;
8332 1.1 christos else
8333 1.1 christos {
8334 1.1 christos BFD_ASSERT (h->dynindx != -1);
8335 1.1 christos indx = h->dynindx;
8336 1.1 christos unresolved_reloc = FALSE;
8337 1.1 christos }
8338 1.1 christos offp = &h->got.offset;
8339 1.1 christos }
8340 1.1 christos else
8341 1.1 christos {
8342 1.1 christos if (local_got_offsets == NULL)
8343 1.1 christos abort ();
8344 1.1 christos offp = &local_got_offsets[r_symndx];
8345 1.1 christos }
8346 1.1 christos
8347 1.1 christos /* The offset must always be a multiple of 4. We use the
8348 1.1 christos least significant bit to record whether we have already
8349 1.1 christos processed this entry. */
8350 1.1 christos off = *offp;
8351 1.1 christos if ((off & 1) != 0)
8352 1.1 christos off &= ~1;
8353 1.1 christos else
8354 1.1 christos {
8355 1.1 christos unsigned int tls_m = (tls_mask
8356 1.1 christos & (TLS_LD | TLS_GD | TLS_DTPREL
8357 1.1 christos | TLS_TPREL | TLS_TPRELGD));
8358 1.1 christos
8359 1.1 christos if (offp == &htab->tlsld_got.offset)
8360 1.1 christos tls_m = TLS_LD;
8361 1.1 christos else if (h == NULL
8362 1.1 christos || !h->def_dynamic)
8363 1.1 christos tls_m &= ~TLS_LD;
8364 1.1 christos
8365 1.1 christos /* We might have multiple got entries for this sym.
8366 1.1 christos Initialize them all. */
8367 1.1 christos do
8368 1.1 christos {
8369 1.1 christos int tls_ty = 0;
8370 1.1 christos
8371 1.1 christos if ((tls_m & TLS_LD) != 0)
8372 1.1 christos {
8373 1.1 christos tls_ty = TLS_TLS | TLS_LD;
8374 1.1 christos tls_m &= ~TLS_LD;
8375 1.1 christos }
8376 1.1 christos else if ((tls_m & TLS_GD) != 0)
8377 1.1 christos {
8378 1.1 christos tls_ty = TLS_TLS | TLS_GD;
8379 1.1 christos tls_m &= ~TLS_GD;
8380 1.1 christos }
8381 1.1 christos else if ((tls_m & TLS_DTPREL) != 0)
8382 1.1 christos {
8383 1.1 christos tls_ty = TLS_TLS | TLS_DTPREL;
8384 1.1 christos tls_m &= ~TLS_DTPREL;
8385 1.1 christos }
8386 1.1 christos else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8387 1.1 christos {
8388 1.1 christos tls_ty = TLS_TLS | TLS_TPREL;
8389 1.1 christos tls_m = 0;
8390 1.1 christos }
8391 1.1 christos
8392 1.1 christos /* Generate relocs for the dynamic linker. */
8393 1.1 christos if ((info->shared || indx != 0)
8394 1.1 christos && (offp == &htab->tlsld_got.offset
8395 1.1 christos || h == NULL
8396 1.1 christos || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8397 1.1 christos || h->root.type != bfd_link_hash_undefweak))
8398 1.1 christos {
8399 1.1 christos asection *rsec = htab->relgot;
8400 1.1 christos bfd_byte * loc;
8401 1.1 christos
8402 1.1 christos if (ifunc != NULL)
8403 1.1 christos rsec = htab->reliplt;
8404 1.1 christos outrel.r_offset = (htab->got->output_section->vma
8405 1.1 christos + htab->got->output_offset
8406 1.1 christos + off);
8407 1.1 christos outrel.r_addend = 0;
8408 1.1 christos if (tls_ty & (TLS_LD | TLS_GD))
8409 1.1 christos {
8410 1.1 christos outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8411 1.1 christos if (tls_ty == (TLS_TLS | TLS_GD))
8412 1.1 christos {
8413 1.1 christos loc = rsec->contents;
8414 1.1 christos loc += (rsec->reloc_count++
8415 1.1 christos * sizeof (Elf32_External_Rela));
8416 1.1 christos bfd_elf32_swap_reloca_out (output_bfd,
8417 1.1 christos &outrel, loc);
8418 1.1 christos outrel.r_offset += 4;
8419 1.1 christos outrel.r_info
8420 1.1 christos = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8421 1.5 christos }
8422 1.5 christos }
8423 1.5 christos else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8424 1.5 christos outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8425 1.5 christos else if (tls_ty == (TLS_TLS | TLS_TPREL))
8426 1.5 christos outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8427 1.1 christos else if (indx != 0)
8428 1.1 christos outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8429 1.1 christos else if (ifunc != NULL)
8430 1.1 christos outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8431 1.1 christos else
8432 1.1 christos outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8433 1.1 christos if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8434 1.1 christos {
8435 1.1 christos outrel.r_addend += relocation;
8436 1.1 christos if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8437 1.1 christos {
8438 1.1 christos if (htab->elf.tls_sec == NULL)
8439 1.1 christos outrel.r_addend = 0;
8440 1.1 christos else
8441 1.1 christos outrel.r_addend -= htab->elf.tls_sec->vma;
8442 1.1 christos }
8443 1.1 christos }
8444 1.5 christos loc = rsec->contents;
8445 1.5 christos loc += (rsec->reloc_count++
8446 1.5 christos * sizeof (Elf32_External_Rela));
8447 1.5 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8448 1.5 christos }
8449 1.5 christos
8450 1.5 christos /* Init the .got section contents if we're not
8451 1.5 christos emitting a reloc. */
8452 1.1 christos else
8453 1.1 christos {
8454 1.1 christos bfd_vma value = relocation;
8455 1.1 christos
8456 1.1 christos if (tls_ty == (TLS_TLS | TLS_LD))
8457 1.1 christos value = 1;
8458 1.1 christos else if (tls_ty != 0)
8459 1.1 christos {
8460 1.1 christos if (htab->elf.tls_sec == NULL)
8461 1.1 christos value = 0;
8462 1.1 christos else
8463 1.1 christos {
8464 1.1 christos value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8465 1.1 christos if (tls_ty == (TLS_TLS | TLS_TPREL))
8466 1.1 christos value += DTP_OFFSET - TP_OFFSET;
8467 1.1 christos }
8468 1.1 christos
8469 1.1 christos if (tls_ty == (TLS_TLS | TLS_GD))
8470 1.1 christos {
8471 1.1 christos bfd_put_32 (output_bfd, value,
8472 1.1 christos htab->got->contents + off + 4);
8473 1.1 christos value = 1;
8474 1.1 christos }
8475 1.1 christos }
8476 1.1 christos bfd_put_32 (output_bfd, value,
8477 1.1 christos htab->got->contents + off);
8478 1.1 christos }
8479 1.1 christos
8480 1.1 christos off += 4;
8481 1.1 christos if (tls_ty & (TLS_LD | TLS_GD))
8482 1.1 christos off += 4;
8483 1.1 christos }
8484 1.1 christos while (tls_m != 0);
8485 1.1 christos
8486 1.1 christos off = *offp;
8487 1.1 christos *offp = off | 1;
8488 1.1 christos }
8489 1.1 christos
8490 1.1 christos if (off >= (bfd_vma) -2)
8491 1.1 christos abort ();
8492 1.1 christos
8493 1.1 christos if ((tls_type & TLS_TLS) != 0)
8494 1.1 christos {
8495 1.1 christos if (tls_type != (TLS_TLS | TLS_LD))
8496 1.1 christos {
8497 1.1 christos if ((tls_mask & TLS_LD) != 0
8498 1.5 christos && !(h == NULL
8499 1.5 christos || !h->def_dynamic))
8500 1.5 christos off += 8;
8501 1.5 christos if (tls_type != (TLS_TLS | TLS_GD))
8502 1.1 christos {
8503 1.1 christos if ((tls_mask & TLS_GD) != 0)
8504 1.1 christos off += 8;
8505 1.1 christos if (tls_type != (TLS_TLS | TLS_DTPREL))
8506 1.1 christos {
8507 1.1 christos if ((tls_mask & TLS_DTPREL) != 0)
8508 1.1 christos off += 4;
8509 1.1 christos }
8510 1.1 christos }
8511 1.1 christos }
8512 1.1 christos }
8513 1.1 christos
8514 1.1 christos /* If here for a picfixup, we're done. */
8515 1.1 christos if (r_type != ELF32_R_TYPE (rel->r_info))
8516 1.1 christos continue;
8517 1.1 christos
8518 1.3 christos relocation = (htab->got->output_section->vma
8519 1.1 christos + htab->got->output_offset
8520 1.3 christos + off
8521 1.1 christos - SYM_VAL (htab->elf.hgot));
8522 1.1 christos
8523 1.1 christos /* Addends on got relocations don't make much sense.
8524 1.1 christos x+off@got is actually x@got+off, and since the got is
8525 1.1 christos generated by a hash table traversal, the value in the
8526 1.1 christos got at entry m+n bears little relation to the entry m. */
8527 1.1 christos if (addend != 0)
8528 1.1 christos info->callbacks->einfo
8529 1.1 christos (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
8530 1.1 christos input_bfd, input_section, rel->r_offset,
8531 1.1 christos howto->name,
8532 1.1 christos sym_name);
8533 1.1 christos }
8534 1.1 christos break;
8535 1.1 christos
8536 1.1 christos /* Relocations that need no special processing. */
8537 1.1 christos case R_PPC_LOCAL24PC:
8538 1.1 christos /* It makes no sense to point a local relocation
8539 1.1 christos at a symbol not in this object. */
8540 1.1 christos if (unresolved_reloc)
8541 1.5 christos {
8542 1.5 christos if (! (*info->callbacks->undefined_symbol) (info,
8543 1.1 christos h->root.root.string,
8544 1.1 christos input_bfd,
8545 1.1 christos input_section,
8546 1.1 christos rel->r_offset,
8547 1.1 christos TRUE))
8548 1.1 christos return FALSE;
8549 1.1 christos continue;
8550 1.1 christos }
8551 1.1 christos break;
8552 1.1 christos
8553 1.1 christos case R_PPC_DTPREL16:
8554 1.1 christos case R_PPC_DTPREL16_LO:
8555 1.1 christos case R_PPC_DTPREL16_HI:
8556 1.1 christos case R_PPC_DTPREL16_HA:
8557 1.1 christos if (htab->elf.tls_sec != NULL)
8558 1.1 christos addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8559 1.1 christos break;
8560 1.1 christos
8561 1.1 christos /* Relocations that may need to be propagated if this is a shared
8562 1.1 christos object. */
8563 1.1 christos case R_PPC_TPREL16:
8564 1.1 christos case R_PPC_TPREL16_LO:
8565 1.1 christos case R_PPC_TPREL16_HI:
8566 1.5 christos case R_PPC_TPREL16_HA:
8567 1.5 christos if (h != NULL
8568 1.1 christos && h->root.type == bfd_link_hash_undefweak
8569 1.1 christos && h->dynindx == -1)
8570 1.1 christos {
8571 1.1 christos /* Make this relocation against an undefined weak symbol
8572 1.1 christos resolve to zero. This is really just a tweak, since
8573 1.1 christos code using weak externs ought to check that they are
8574 1.5 christos defined before using them. */
8575 1.5 christos bfd_byte *p = contents + rel->r_offset - d_offset;
8576 1.1 christos unsigned int insn = bfd_get_32 (output_bfd, p);
8577 1.1 christos insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8578 1.1 christos if (insn != 0)
8579 1.5 christos bfd_put_32 (output_bfd, insn, p);
8580 1.5 christos break;
8581 1.1 christos }
8582 1.1 christos if (htab->elf.tls_sec != NULL)
8583 1.1 christos addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8584 1.1 christos /* The TPREL16 relocs shouldn't really be used in shared
8585 1.1 christos libs as they will result in DT_TEXTREL being set, but
8586 1.1 christos support them anyway. */
8587 1.1 christos goto dodyn;
8588 1.1 christos
8589 1.1 christos case R_PPC_TPREL32:
8590 1.1 christos if (htab->elf.tls_sec != NULL)
8591 1.1 christos addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8592 1.1 christos goto dodyn;
8593 1.1 christos
8594 1.1 christos case R_PPC_DTPREL32:
8595 1.1 christos if (htab->elf.tls_sec != NULL)
8596 1.1 christos addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8597 1.1 christos goto dodyn;
8598 1.1 christos
8599 1.1 christos case R_PPC_DTPMOD32:
8600 1.1 christos relocation = 1;
8601 1.1 christos addend = 0;
8602 1.1 christos goto dodyn;
8603 1.1 christos
8604 1.1 christos case R_PPC_REL16:
8605 1.1 christos case R_PPC_REL16_LO:
8606 1.1 christos case R_PPC_REL16_HI:
8607 1.1 christos case R_PPC_REL16_HA:
8608 1.1 christos break;
8609 1.1 christos
8610 1.1 christos case R_PPC_REL32:
8611 1.1 christos if (h == NULL || h == htab->elf.hgot)
8612 1.1 christos break;
8613 1.1 christos /* fall through */
8614 1.1 christos
8615 1.1 christos case R_PPC_ADDR32:
8616 1.1 christos case R_PPC_ADDR16:
8617 1.1 christos case R_PPC_ADDR16_LO:
8618 1.1 christos case R_PPC_ADDR16_HI:
8619 1.1 christos case R_PPC_ADDR16_HA:
8620 1.1 christos case R_PPC_UADDR32:
8621 1.1 christos case R_PPC_UADDR16:
8622 1.1 christos goto dodyn;
8623 1.1 christos
8624 1.1 christos case R_PPC_VLE_REL8:
8625 1.1 christos case R_PPC_VLE_REL15:
8626 1.1 christos case R_PPC_VLE_REL24:
8627 1.1 christos case R_PPC_REL24:
8628 1.1 christos case R_PPC_REL14:
8629 1.1 christos case R_PPC_REL14_BRTAKEN:
8630 1.1 christos case R_PPC_REL14_BRNTAKEN:
8631 1.1 christos /* If these relocations are not to a named symbol, they can be
8632 1.1 christos handled right here, no need to bother the dynamic linker. */
8633 1.1 christos if (SYMBOL_CALLS_LOCAL (info, h)
8634 1.1 christos || h == htab->elf.hgot)
8635 1.1 christos break;
8636 1.1 christos /* fall through */
8637 1.1 christos
8638 1.1 christos case R_PPC_ADDR24:
8639 1.1 christos case R_PPC_ADDR14:
8640 1.1 christos case R_PPC_ADDR14_BRTAKEN:
8641 1.1 christos case R_PPC_ADDR14_BRNTAKEN:
8642 1.1 christos if (h != NULL && !info->shared)
8643 1.1 christos break;
8644 1.1 christos /* fall through */
8645 1.1 christos
8646 1.1 christos dodyn:
8647 1.1 christos if ((input_section->flags & SEC_ALLOC) == 0
8648 1.1 christos || is_vxworks_tls)
8649 1.5 christos break;
8650 1.5 christos
8651 1.5 christos if ((info->shared
8652 1.5 christos && !(h != NULL
8653 1.5 christos && ((h->root.type == bfd_link_hash_undefined
8654 1.1 christos && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8655 1.1 christos || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8656 1.1 christos || (h->root.type == bfd_link_hash_undefweak
8657 1.1 christos && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
8658 1.1 christos && (must_be_dyn_reloc (info, r_type)
8659 1.1 christos || !SYMBOL_CALLS_LOCAL (info, h)))
8660 1.1 christos || (ELIMINATE_COPY_RELOCS
8661 1.1 christos && !info->shared
8662 1.1 christos && h != NULL
8663 1.1 christos && h->dynindx != -1
8664 1.1 christos && !h->non_got_ref
8665 1.1 christos && !h->def_regular
8666 1.1 christos && !(h->protected_def
8667 1.1 christos && ppc_elf_hash_entry (h)->has_addr16_ha
8668 1.1 christos && ppc_elf_hash_entry (h)->has_addr16_lo
8669 1.1 christos && htab->params->pic_fixup > 0)))
8670 1.1 christos {
8671 1.1 christos int skip;
8672 1.1 christos bfd_byte *loc;
8673 1.1 christos asection *sreloc;
8674 1.1 christos #ifdef DEBUG
8675 1.1 christos fprintf (stderr, "ppc_elf_relocate_section needs to "
8676 1.1 christos "create relocation for %s\n",
8677 1.1 christos (h && h->root.root.string
8678 1.1 christos ? h->root.root.string : "<unknown>"));
8679 1.1 christos #endif
8680 1.1 christos
8681 1.1 christos /* When generating a shared object, these relocations
8682 1.1 christos are copied into the output file to be resolved at run
8683 1.1 christos time. */
8684 1.1 christos sreloc = elf_section_data (input_section)->sreloc;
8685 1.1 christos if (ifunc)
8686 1.1 christos sreloc = htab->reliplt;
8687 1.1 christos if (sreloc == NULL)
8688 1.1 christos return FALSE;
8689 1.1 christos
8690 1.1 christos skip = 0;
8691 1.1 christos outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8692 1.1 christos input_section,
8693 1.1 christos rel->r_offset);
8694 1.1 christos if (outrel.r_offset == (bfd_vma) -1
8695 1.1 christos || outrel.r_offset == (bfd_vma) -2)
8696 1.1 christos skip = (int) outrel.r_offset;
8697 1.1 christos outrel.r_offset += (input_section->output_section->vma
8698 1.1 christos + input_section->output_offset);
8699 1.1 christos
8700 1.1 christos if (skip)
8701 1.1 christos memset (&outrel, 0, sizeof outrel);
8702 1.1 christos else if ((h != NULL
8703 1.1 christos && (h->root.type == bfd_link_hash_undefined
8704 1.1 christos || h->root.type == bfd_link_hash_undefweak))
8705 1.1 christos || !SYMBOL_REFERENCES_LOCAL (info, h))
8706 1.1 christos {
8707 1.1 christos BFD_ASSERT (h->dynindx != -1);
8708 1.1 christos unresolved_reloc = FALSE;
8709 1.1 christos outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8710 1.1 christos outrel.r_addend = rel->r_addend;
8711 1.1 christos }
8712 1.1 christos else
8713 1.1 christos {
8714 1.1 christos outrel.r_addend = relocation + rel->r_addend;
8715 1.1 christos
8716 1.1 christos if (r_type != R_PPC_ADDR32)
8717 1.1 christos {
8718 1.1 christos long indx = 0;
8719 1.1 christos
8720 1.1 christos if (ifunc != NULL)
8721 1.1 christos {
8722 1.1 christos /* If we get here when building a static
8723 1.1 christos executable, then the libc startup function
8724 1.1 christos responsible for applying indirect function
8725 1.1 christos relocations is going to complain about
8726 1.1 christos the reloc type.
8727 1.1 christos If we get here when building a dynamic
8728 1.1 christos executable, it will be because we have
8729 1.1 christos a text relocation. The dynamic loader
8730 1.1 christos will set the text segment writable and
8731 1.1 christos non-executable to apply text relocations.
8732 1.1 christos So we'll segfault when trying to run the
8733 1.1 christos indirection function to resolve the reloc. */
8734 1.1 christos info->callbacks->einfo
8735 1.1 christos (_("%P: %H: relocation %s for indirect "
8736 1.1 christos "function %s unsupported\n"),
8737 1.1 christos input_bfd, input_section, rel->r_offset,
8738 1.1 christos howto->name,
8739 1.1 christos sym_name);
8740 1.1 christos ret = FALSE;
8741 1.1 christos }
8742 1.1 christos else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8743 1.1 christos ;
8744 1.1 christos else if (sec == NULL || sec->owner == NULL)
8745 1.1 christos {
8746 1.1 christos bfd_set_error (bfd_error_bad_value);
8747 1.1 christos ret = FALSE;
8748 1.1 christos }
8749 1.1 christos else
8750 1.1 christos {
8751 1.1 christos asection *osec;
8752 1.1 christos
8753 1.1 christos /* We are turning this relocation into one
8754 1.1 christos against a section symbol. It would be
8755 1.1 christos proper to subtract the symbol's value,
8756 1.1 christos osec->vma, from the emitted reloc addend,
8757 1.1 christos but ld.so expects buggy relocs.
8758 1.1 christos FIXME: Why not always use a zero index? */
8759 1.1 christos osec = sec->output_section;
8760 1.1 christos indx = elf_section_data (osec)->dynindx;
8761 1.1 christos if (indx == 0)
8762 1.1 christos {
8763 1.1 christos osec = htab->elf.text_index_section;
8764 1.1 christos indx = elf_section_data (osec)->dynindx;
8765 1.1 christos }
8766 1.1 christos BFD_ASSERT (indx != 0);
8767 1.1 christos #ifdef DEBUG
8768 1.1 christos if (indx == 0)
8769 1.1 christos printf ("indx=%ld section=%s flags=%08x name=%s\n",
8770 1.1 christos indx, osec->name, osec->flags,
8771 1.1 christos h->root.root.string);
8772 1.1 christos #endif
8773 1.1 christos }
8774 1.1 christos
8775 1.1 christos outrel.r_info = ELF32_R_INFO (indx, r_type);
8776 1.1 christos }
8777 1.1 christos else if (ifunc != NULL)
8778 1.1 christos outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8779 1.1 christos else
8780 1.1 christos outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8781 1.1 christos }
8782 1.1 christos
8783 1.1 christos loc = sreloc->contents;
8784 1.1 christos loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8785 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8786 1.1 christos
8787 1.1 christos if (skip == -1)
8788 1.1 christos continue;
8789 1.1 christos
8790 1.1 christos /* This reloc will be computed at runtime. We clear the memory
8791 1.1 christos so that it contains predictable value. */
8792 1.1 christos if (! skip
8793 1.1 christos && ((input_section->flags & SEC_ALLOC) != 0
8794 1.1 christos || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
8795 1.1 christos {
8796 1.1 christos relocation = howto->pc_relative ? outrel.r_offset : 0;
8797 1.1 christos addend = 0;
8798 1.1 christos break;
8799 1.1 christos }
8800 1.1 christos }
8801 1.1 christos break;
8802 1.1 christos
8803 1.1 christos case R_PPC_RELAX_PLT:
8804 1.1 christos case R_PPC_RELAX_PLTREL24:
8805 1.1 christos if (h != NULL)
8806 1.1 christos {
8807 1.1 christos struct plt_entry *ent;
8808 1.1 christos bfd_vma got2_addend = 0;
8809 1.1 christos
8810 1.1 christos if (r_type == R_PPC_RELAX_PLTREL24)
8811 1.1 christos {
8812 1.1 christos if (info->shared)
8813 1.1 christos got2_addend = addend;
8814 1.3 christos addend = 0;
8815 1.3 christos }
8816 1.3 christos ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8817 1.3 christos if (htab->plt_type == PLT_NEW)
8818 1.3 christos relocation = (htab->glink->output_section->vma
8819 1.3 christos + htab->glink->output_offset
8820 1.3 christos + ent->glink_offset);
8821 1.3 christos else
8822 1.3 christos relocation = (htab->plt->output_section->vma
8823 1.3 christos + htab->plt->output_offset
8824 1.3 christos + ent->plt.offset);
8825 1.3 christos }
8826 1.3 christos /* Fall thru */
8827 1.3 christos
8828 1.3 christos case R_PPC_RELAX:
8829 1.3 christos {
8830 1.3 christos const int *stub;
8831 1.3 christos size_t size;
8832 1.3 christos size_t insn_offset = rel->r_offset;
8833 1.3 christos unsigned int insn;
8834 1.3 christos
8835 1.3 christos if (info->shared)
8836 1.1 christos {
8837 1.1 christos relocation -= (input_section->output_section->vma
8838 1.3 christos + input_section->output_offset
8839 1.3 christos + rel->r_offset - 4);
8840 1.1 christos stub = shared_stub_entry;
8841 1.3 christos bfd_put_32 (output_bfd, stub[0], contents + insn_offset - 12);
8842 1.3 christos bfd_put_32 (output_bfd, stub[1], contents + insn_offset - 8);
8843 1.3 christos bfd_put_32 (output_bfd, stub[2], contents + insn_offset - 4);
8844 1.3 christos stub += 3;
8845 1.3 christos size = ARRAY_SIZE (shared_stub_entry) - 3;
8846 1.3 christos }
8847 1.3 christos else
8848 1.3 christos {
8849 1.3 christos stub = stub_entry;
8850 1.3 christos size = ARRAY_SIZE (stub_entry);
8851 1.3 christos }
8852 1.3 christos
8853 1.3 christos relocation += addend;
8854 1.3 christos if (info->relocatable)
8855 1.3 christos relocation = 0;
8856 1.3 christos
8857 1.3 christos /* First insn is HA, second is LO. */
8858 1.3 christos insn = *stub++;
8859 1.3 christos insn |= ((relocation + 0x8000) >> 16) & 0xffff;
8860 1.1 christos bfd_put_32 (output_bfd, insn, contents + insn_offset);
8861 1.1 christos insn_offset += 4;
8862 1.1 christos
8863 1.1 christos insn = *stub++;
8864 1.1 christos insn |= relocation & 0xffff;
8865 1.3 christos bfd_put_32 (output_bfd, insn, contents + insn_offset);
8866 1.1 christos insn_offset += 4;
8867 1.1 christos size -= 2;
8868 1.1 christos
8869 1.1 christos while (size != 0)
8870 1.1 christos {
8871 1.1 christos insn = *stub++;
8872 1.1 christos --size;
8873 1.1 christos bfd_put_32 (output_bfd, insn, contents + insn_offset);
8874 1.1 christos insn_offset += 4;
8875 1.1 christos }
8876 1.1 christos
8877 1.1 christos /* Rewrite the reloc and convert one of the trailing nop
8878 1.1 christos relocs to describe this relocation. */
8879 1.1 christos BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
8880 1.1 christos /* The relocs are at the bottom 2 bytes */
8881 1.1 christos rel[0].r_offset += d_offset;
8882 1.1 christos memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8883 1.1 christos rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
8884 1.1 christos rel[1].r_offset += 4;
8885 1.1 christos rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
8886 1.1 christos rel++;
8887 1.1 christos }
8888 1.1 christos continue;
8889 1.1 christos
8890 1.1 christos /* Indirect .sdata relocation. */
8891 1.1 christos case R_PPC_EMB_SDAI16:
8892 1.1 christos BFD_ASSERT (htab->sdata[0].section != NULL);
8893 1.1 christos if (!is_static_defined (htab->sdata[0].sym))
8894 1.1 christos {
8895 1.1 christos unresolved_reloc = TRUE;
8896 1.1 christos break;
8897 1.1 christos }
8898 1.1 christos relocation
8899 1.1 christos = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
8900 1.1 christos h, relocation, rel);
8901 1.1 christos addend = 0;
8902 1.1 christos break;
8903 1.1 christos
8904 1.1 christos /* Indirect .sdata2 relocation. */
8905 1.1 christos case R_PPC_EMB_SDA2I16:
8906 1.1 christos BFD_ASSERT (htab->sdata[1].section != NULL);
8907 1.1 christos if (!is_static_defined (htab->sdata[1].sym))
8908 1.1 christos {
8909 1.1 christos unresolved_reloc = TRUE;
8910 1.1 christos break;
8911 1.1 christos }
8912 1.1 christos relocation
8913 1.1 christos = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
8914 1.1 christos h, relocation, rel);
8915 1.1 christos addend = 0;
8916 1.1 christos break;
8917 1.1 christos
8918 1.1 christos /* Handle the TOC16 reloc. We want to use the offset within the .got
8919 1.1 christos section, not the actual VMA. This is appropriate when generating
8920 1.1 christos an embedded ELF object, for which the .got section acts like the
8921 1.1 christos AIX .toc section. */
8922 1.1 christos case R_PPC_TOC16: /* phony GOT16 relocations */
8923 1.1 christos if (sec == NULL || sec->output_section == NULL)
8924 1.1 christos {
8925 1.1 christos unresolved_reloc = TRUE;
8926 1.1 christos break;
8927 1.1 christos }
8928 1.1 christos BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
8929 1.1 christos ".got") == 0
8930 1.1 christos || strcmp (bfd_get_section_name (sec->owner, sec),
8931 1.1 christos ".cgot") == 0);
8932 1.1 christos
8933 1.1 christos addend -= sec->output_section->vma + sec->output_offset + 0x8000;
8934 1.1 christos break;
8935 1.1 christos
8936 1.1 christos case R_PPC_PLTREL24:
8937 1.1 christos if (h != NULL && ifunc == NULL)
8938 1.1 christos {
8939 1.1 christos struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
8940 1.1 christos info->shared ? addend : 0);
8941 1.1 christos if (ent == NULL
8942 1.1 christos || htab->plt == NULL)
8943 1.1 christos {
8944 1.1 christos /* We didn't make a PLT entry for this symbol. This
8945 1.1 christos happens when statically linking PIC code, or when
8946 1.1 christos using -Bsymbolic. */
8947 1.1 christos }
8948 1.1 christos else
8949 1.1 christos {
8950 1.1 christos /* Relocation is to the entry for this symbol in the
8951 1.1 christos procedure linkage table. */
8952 1.1 christos unresolved_reloc = FALSE;
8953 1.1 christos if (htab->plt_type == PLT_NEW)
8954 1.1 christos relocation = (htab->glink->output_section->vma
8955 1.1 christos + htab->glink->output_offset
8956 1.1 christos + ent->glink_offset);
8957 1.1 christos else
8958 1.1 christos relocation = (htab->plt->output_section->vma
8959 1.1 christos + htab->plt->output_offset
8960 1.1 christos + ent->plt.offset);
8961 1.1 christos }
8962 1.1 christos }
8963 1.1 christos
8964 1.1 christos /* R_PPC_PLTREL24 is rather special. If non-zero, the
8965 1.1 christos addend specifies the GOT pointer offset within .got2.
8966 1.1 christos Don't apply it to the relocation field. */
8967 1.1 christos addend = 0;
8968 1.1 christos break;
8969 1.1 christos
8970 1.3 christos /* Relocate against _SDA_BASE_. */
8971 1.3 christos case R_PPC_SDAREL16:
8972 1.1 christos {
8973 1.1 christos const char *name;
8974 1.1 christos struct elf_link_hash_entry *sda = htab->sdata[0].sym;
8975 1.1 christos
8976 1.1 christos if (sec == NULL
8977 1.1 christos || sec->output_section == NULL
8978 1.1 christos || !is_static_defined (sda))
8979 1.1 christos {
8980 1.1 christos unresolved_reloc = TRUE;
8981 1.1 christos break;
8982 1.1 christos }
8983 1.1 christos addend -= SYM_VAL (sda);
8984 1.1 christos
8985 1.1 christos name = bfd_get_section_name (output_bfd, sec->output_section);
8986 1.1 christos if (!(strcmp (name, ".sdata") == 0
8987 1.1 christos || strcmp (name, ".sbss") == 0))
8988 1.1 christos {
8989 1.1 christos info->callbacks->einfo
8990 1.1 christos (_("%P: %B: the target (%s) of a %s relocation is "
8991 1.1 christos "in the wrong output section (%s)\n"),
8992 1.1 christos input_bfd,
8993 1.1 christos sym_name,
8994 1.1 christos howto->name,
8995 1.1 christos name);
8996 1.1 christos }
8997 1.1 christos }
8998 1.1 christos break;
8999 1.1 christos
9000 1.3 christos /* Relocate against _SDA2_BASE_. */
9001 1.3 christos case R_PPC_EMB_SDA2REL:
9002 1.1 christos {
9003 1.1 christos const char *name;
9004 1.1 christos struct elf_link_hash_entry *sda = htab->sdata[1].sym;
9005 1.1 christos
9006 1.1 christos if (sec == NULL
9007 1.1 christos || sec->output_section == NULL
9008 1.1 christos || !is_static_defined (sda))
9009 1.1 christos {
9010 1.1 christos unresolved_reloc = TRUE;
9011 1.1 christos break;
9012 1.1 christos }
9013 1.1 christos addend -= SYM_VAL (sda);
9014 1.1 christos
9015 1.3 christos name = bfd_get_section_name (output_bfd, sec->output_section);
9016 1.3 christos if (!(strcmp (name, ".sdata2") == 0
9017 1.3 christos || strcmp (name, ".sbss2") == 0))
9018 1.1 christos {
9019 1.1 christos info->callbacks->einfo
9020 1.1 christos (_("%P: %B: the target (%s) of a %s relocation is "
9021 1.3 christos "in the wrong output section (%s)\n"),
9022 1.3 christos input_bfd,
9023 1.3 christos sym_name,
9024 1.1 christos howto->name,
9025 1.1 christos name);
9026 1.1 christos }
9027 1.3 christos }
9028 1.3 christos break;
9029 1.3 christos
9030 1.1 christos case R_PPC_VLE_LO16A:
9031 1.1 christos relocation = relocation + addend;
9032 1.1 christos ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9033 1.3 christos relocation, split16a_type);
9034 1.3 christos continue;
9035 1.3 christos
9036 1.1 christos case R_PPC_VLE_LO16D:
9037 1.1 christos relocation = relocation + addend;
9038 1.1 christos ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9039 1.3 christos relocation, split16d_type);
9040 1.3 christos continue;
9041 1.3 christos
9042 1.1 christos case R_PPC_VLE_HI16A:
9043 1.1 christos relocation = (relocation + addend) >> 16;
9044 1.1 christos ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9045 1.3 christos relocation, split16a_type);
9046 1.3 christos continue;
9047 1.3 christos
9048 1.1 christos case R_PPC_VLE_HI16D:
9049 1.1 christos relocation = (relocation + addend) >> 16;
9050 1.1 christos ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9051 1.1 christos relocation, split16d_type);
9052 1.1 christos continue;
9053 1.1 christos
9054 1.1 christos case R_PPC_VLE_HA16A:
9055 1.1 christos relocation = (relocation + addend + 0x8000) >> 16;
9056 1.1 christos ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9057 1.1 christos relocation, split16a_type);
9058 1.3 christos continue;
9059 1.1 christos
9060 1.1 christos case R_PPC_VLE_HA16D:
9061 1.1 christos relocation = (relocation + addend + 0x8000) >> 16;
9062 1.1 christos ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9063 1.1 christos relocation, split16d_type);
9064 1.1 christos continue;
9065 1.1 christos
9066 1.1 christos /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9067 1.1 christos case R_PPC_EMB_SDA21:
9068 1.3 christos case R_PPC_VLE_SDA21:
9069 1.3 christos case R_PPC_EMB_RELSDA:
9070 1.1 christos case R_PPC_VLE_SDA21_LO:
9071 1.1 christos {
9072 1.1 christos const char *name;
9073 1.1 christos int reg;
9074 1.3 christos unsigned int insn;
9075 1.3 christos struct elf_link_hash_entry *sda = NULL;
9076 1.1 christos
9077 1.1 christos if (sec == NULL || sec->output_section == NULL)
9078 1.1 christos {
9079 1.1 christos unresolved_reloc = TRUE;
9080 1.1 christos break;
9081 1.1 christos }
9082 1.1 christos
9083 1.1 christos name = bfd_get_section_name (output_bfd, sec->output_section);
9084 1.1 christos if (strcmp (name, ".sdata") == 0
9085 1.1 christos || strcmp (name, ".sbss") == 0)
9086 1.1 christos {
9087 1.1 christos reg = 13;
9088 1.1 christos sda = htab->sdata[0].sym;
9089 1.1 christos }
9090 1.1 christos else if (strcmp (name, ".sdata2") == 0
9091 1.1 christos || strcmp (name, ".sbss2") == 0)
9092 1.1 christos {
9093 1.1 christos reg = 2;
9094 1.1 christos sda = htab->sdata[1].sym;
9095 1.1 christos }
9096 1.1 christos else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9097 1.1 christos || strcmp (name, ".PPC.EMB.sbss0") == 0)
9098 1.1 christos {
9099 1.1 christos reg = 0;
9100 1.1 christos }
9101 1.1 christos else
9102 1.1 christos {
9103 1.1 christos info->callbacks->einfo
9104 1.1 christos (_("%P: %B: the target (%s) of a %s relocation is "
9105 1.1 christos "in the wrong output section (%s)\n"),
9106 1.1 christos input_bfd,
9107 1.1 christos sym_name,
9108 1.1 christos howto->name,
9109 1.1 christos name);
9110 1.3 christos
9111 1.1 christos bfd_set_error (bfd_error_bad_value);
9112 1.1 christos ret = FALSE;
9113 1.1 christos continue;
9114 1.1 christos }
9115 1.3 christos
9116 1.3 christos if (sda != NULL)
9117 1.3 christos {
9118 1.3 christos if (!is_static_defined (sda))
9119 1.3 christos {
9120 1.3 christos unresolved_reloc = TRUE;
9121 1.3 christos break;
9122 1.3 christos }
9123 1.3 christos addend -= SYM_VAL (sda);
9124 1.3 christos }
9125 1.3 christos
9126 1.3 christos insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
9127 1.3 christos if (reg == 0
9128 1.3 christos && (r_type == R_PPC_VLE_SDA21
9129 1.3 christos || r_type == R_PPC_VLE_SDA21_LO))
9130 1.3 christos {
9131 1.3 christos relocation = relocation + addend;
9132 1.3 christos addend = 0;
9133 1.3 christos
9134 1.3 christos /* Force e_li insn, keeping RT from original insn. */
9135 1.1 christos insn &= 0x1f << 21;
9136 1.1 christos insn |= 28u << 26;
9137 1.1 christos
9138 1.1 christos /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9139 1.1 christos /* Top 4 bits of value to 17..20. */
9140 1.1 christos insn |= (relocation & 0xf0000) >> 5;
9141 1.3 christos /* Next 5 bits of the value to 11..15. */
9142 1.1 christos insn |= (relocation & 0xf800) << 5;
9143 1.1 christos /* And the final 11 bits of the value to bits 21 to 31. */
9144 1.3 christos insn |= relocation & 0x7ff;
9145 1.1 christos
9146 1.1 christos bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9147 1.1 christos
9148 1.1 christos if (r_type == R_PPC_VLE_SDA21
9149 1.1 christos && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9150 1.1 christos goto overflow;
9151 1.1 christos continue;
9152 1.1 christos }
9153 1.1 christos else if (r_type == R_PPC_EMB_SDA21
9154 1.1 christos || r_type == R_PPC_VLE_SDA21
9155 1.1 christos || r_type == R_PPC_VLE_SDA21_LO)
9156 1.1 christos {
9157 1.1 christos /* Fill in register field. */
9158 1.1 christos insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
9159 1.1 christos }
9160 1.1 christos bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9161 1.1 christos }
9162 1.1 christos break;
9163 1.1 christos
9164 1.1 christos case R_PPC_VLE_SDAREL_LO16A:
9165 1.1 christos case R_PPC_VLE_SDAREL_LO16D:
9166 1.1 christos case R_PPC_VLE_SDAREL_HI16A:
9167 1.3 christos case R_PPC_VLE_SDAREL_HI16D:
9168 1.3 christos case R_PPC_VLE_SDAREL_HA16A:
9169 1.1 christos case R_PPC_VLE_SDAREL_HA16D:
9170 1.1 christos {
9171 1.1 christos bfd_vma value;
9172 1.1 christos const char *name;
9173 1.3 christos //int reg;
9174 1.3 christos struct elf_link_hash_entry *sda = NULL;
9175 1.1 christos
9176 1.1 christos if (sec == NULL || sec->output_section == NULL)
9177 1.1 christos {
9178 1.1 christos unresolved_reloc = TRUE;
9179 1.1 christos break;
9180 1.1 christos }
9181 1.1 christos
9182 1.1 christos name = bfd_get_section_name (output_bfd, sec->output_section);
9183 1.1 christos if (strcmp (name, ".sdata") == 0
9184 1.1 christos || strcmp (name, ".sbss") == 0)
9185 1.1 christos {
9186 1.1 christos //reg = 13;
9187 1.1 christos sda = htab->sdata[0].sym;
9188 1.1 christos }
9189 1.1 christos else if (strcmp (name, ".sdata2") == 0
9190 1.1 christos || strcmp (name, ".sbss2") == 0)
9191 1.1 christos {
9192 1.1 christos //reg = 2;
9193 1.1 christos sda = htab->sdata[1].sym;
9194 1.1 christos }
9195 1.1 christos else
9196 1.1 christos {
9197 1.1 christos (*_bfd_error_handler)
9198 1.1 christos (_("%B: the target (%s) of a %s relocation is "
9199 1.1 christos "in the wrong output section (%s)"),
9200 1.1 christos input_bfd,
9201 1.1 christos sym_name,
9202 1.1 christos howto->name,
9203 1.3 christos name);
9204 1.3 christos
9205 1.3 christos bfd_set_error (bfd_error_bad_value);
9206 1.3 christos ret = FALSE;
9207 1.3 christos continue;
9208 1.3 christos }
9209 1.3 christos
9210 1.3 christos if (sda != NULL)
9211 1.3 christos {
9212 1.3 christos if (!is_static_defined (sda))
9213 1.3 christos {
9214 1.3 christos unresolved_reloc = TRUE;
9215 1.3 christos break;
9216 1.3 christos }
9217 1.3 christos }
9218 1.3 christos
9219 1.3 christos value = (sda->root.u.def.section->output_section->vma
9220 1.3 christos + sda->root.u.def.section->output_offset
9221 1.3 christos + addend);
9222 1.3 christos
9223 1.3 christos if (r_type == R_PPC_VLE_SDAREL_LO16A)
9224 1.3 christos ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9225 1.3 christos value, split16a_type);
9226 1.3 christos else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9227 1.3 christos ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9228 1.3 christos value, split16d_type);
9229 1.3 christos else if (r_type == R_PPC_VLE_SDAREL_HI16A)
9230 1.3 christos {
9231 1.3 christos value = value >> 16;
9232 1.3 christos ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9233 1.3 christos value, split16a_type);
9234 1.3 christos }
9235 1.3 christos else if (r_type == R_PPC_VLE_SDAREL_HI16D)
9236 1.1 christos {
9237 1.1 christos value = value >> 16;
9238 1.1 christos ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9239 1.1 christos value, split16d_type);
9240 1.1 christos }
9241 1.1 christos else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9242 1.1 christos {
9243 1.1 christos value = (value + 0x8000) >> 16;
9244 1.1 christos ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9245 1.1 christos value, split16a_type);
9246 1.1 christos }
9247 1.1 christos else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9248 1.1 christos {
9249 1.1 christos value = (value + 0x8000) >> 16;
9250 1.1 christos ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9251 1.1 christos value, split16d_type);
9252 1.1 christos }
9253 1.1 christos }
9254 1.1 christos continue;
9255 1.1 christos
9256 1.1 christos /* Relocate against the beginning of the section. */
9257 1.1 christos case R_PPC_SECTOFF:
9258 1.1 christos case R_PPC_SECTOFF_LO:
9259 1.1 christos case R_PPC_SECTOFF_HI:
9260 1.1 christos case R_PPC_SECTOFF_HA:
9261 1.1 christos if (sec == NULL || sec->output_section == NULL)
9262 1.1 christos {
9263 1.1 christos unresolved_reloc = TRUE;
9264 1.1 christos break;
9265 1.1 christos }
9266 1.1 christos addend -= sec->output_section->vma;
9267 1.1 christos break;
9268 1.1 christos
9269 1.1 christos /* Negative relocations. */
9270 1.1 christos case R_PPC_EMB_NADDR32:
9271 1.1 christos case R_PPC_EMB_NADDR16:
9272 1.1 christos case R_PPC_EMB_NADDR16_LO:
9273 1.1 christos case R_PPC_EMB_NADDR16_HI:
9274 1.1 christos case R_PPC_EMB_NADDR16_HA:
9275 1.1 christos addend -= 2 * relocation;
9276 1.1 christos break;
9277 1.1 christos
9278 1.1 christos case R_PPC_COPY:
9279 1.1 christos case R_PPC_GLOB_DAT:
9280 1.1 christos case R_PPC_JMP_SLOT:
9281 1.1 christos case R_PPC_RELATIVE:
9282 1.1 christos case R_PPC_IRELATIVE:
9283 1.1 christos case R_PPC_PLT32:
9284 1.1 christos case R_PPC_PLTREL32:
9285 1.1 christos case R_PPC_PLT16_LO:
9286 1.1 christos case R_PPC_PLT16_HI:
9287 1.1 christos case R_PPC_PLT16_HA:
9288 1.1 christos case R_PPC_ADDR30:
9289 1.1 christos case R_PPC_EMB_RELSEC16:
9290 1.1 christos case R_PPC_EMB_RELST_LO:
9291 1.1 christos case R_PPC_EMB_RELST_HI:
9292 1.1 christos case R_PPC_EMB_RELST_HA:
9293 1.1 christos case R_PPC_EMB_BIT_FLD:
9294 1.1 christos info->callbacks->einfo
9295 1.1 christos (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9296 1.1 christos input_bfd,
9297 1.1 christos howto->name,
9298 1.1 christos sym_name);
9299 1.1 christos
9300 1.1 christos bfd_set_error (bfd_error_invalid_operation);
9301 1.1 christos ret = FALSE;
9302 1.1 christos continue;
9303 1.1 christos }
9304 1.1 christos
9305 1.1 christos /* Do any further special processing. */
9306 1.1 christos switch (r_type)
9307 1.1 christos {
9308 1.1 christos default:
9309 1.1 christos break;
9310 1.1 christos
9311 1.1 christos case R_PPC_ADDR16_HA:
9312 1.1 christos case R_PPC_REL16_HA:
9313 1.1 christos case R_PPC_SECTOFF_HA:
9314 1.1 christos case R_PPC_TPREL16_HA:
9315 1.1 christos case R_PPC_DTPREL16_HA:
9316 1.1 christos case R_PPC_EMB_NADDR16_HA:
9317 1.1 christos case R_PPC_EMB_RELST_HA:
9318 1.1 christos /* It's just possible that this symbol is a weak symbol
9319 1.1 christos that's not actually defined anywhere. In that case,
9320 1.1 christos 'sec' would be NULL, and we should leave the symbol
9321 1.1 christos alone (it will be set to zero elsewhere in the link). */
9322 1.1 christos if (sec == NULL)
9323 1.1 christos break;
9324 1.1 christos /* Fall thru */
9325 1.1 christos
9326 1.1 christos case R_PPC_PLT16_HA:
9327 1.1 christos case R_PPC_GOT16_HA:
9328 1.1 christos case R_PPC_GOT_TLSGD16_HA:
9329 1.1 christos case R_PPC_GOT_TLSLD16_HA:
9330 1.1 christos case R_PPC_GOT_TPREL16_HA:
9331 1.1 christos case R_PPC_GOT_DTPREL16_HA:
9332 1.1 christos /* Add 0x10000 if sign bit in 0:15 is set.
9333 1.1 christos Bits 0:15 are not used. */
9334 1.1 christos addend += 0x8000;
9335 1.1 christos break;
9336 1.1 christos
9337 1.1 christos case R_PPC_ADDR16:
9338 1.1 christos case R_PPC_ADDR16_LO:
9339 1.1 christos case R_PPC_GOT16:
9340 1.1 christos case R_PPC_GOT16_LO:
9341 1.1 christos case R_PPC_SDAREL16:
9342 1.1 christos case R_PPC_SECTOFF:
9343 1.1 christos case R_PPC_SECTOFF_LO:
9344 1.1 christos case R_PPC_DTPREL16:
9345 1.1 christos case R_PPC_DTPREL16_LO:
9346 1.1 christos case R_PPC_TPREL16:
9347 1.1 christos case R_PPC_TPREL16_LO:
9348 1.1 christos case R_PPC_GOT_TLSGD16:
9349 1.1 christos case R_PPC_GOT_TLSGD16_LO:
9350 1.1 christos case R_PPC_GOT_TLSLD16:
9351 1.1 christos case R_PPC_GOT_TLSLD16_LO:
9352 1.1 christos case R_PPC_GOT_DTPREL16:
9353 1.1 christos case R_PPC_GOT_DTPREL16_LO:
9354 1.1 christos case R_PPC_GOT_TPREL16:
9355 1.1 christos case R_PPC_GOT_TPREL16_LO:
9356 1.1 christos {
9357 1.1 christos /* The 32-bit ABI lacks proper relocations to deal with
9358 1.1 christos certain 64-bit instructions. Prevent damage to bits
9359 1.1 christos that make up part of the insn opcode. */
9360 1.1 christos unsigned int insn, mask, lobit;
9361 1.1 christos
9362 1.1 christos insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
9363 1.1 christos mask = 0;
9364 1.1 christos if (is_insn_ds_form (insn))
9365 1.1 christos mask = 3;
9366 1.1 christos else if (is_insn_dq_form (insn))
9367 1.1 christos mask = 15;
9368 1.1 christos else
9369 1.1 christos break;
9370 1.1 christos lobit = mask & (relocation + addend);
9371 1.1 christos if (lobit != 0)
9372 1.1 christos {
9373 1.1 christos addend -= lobit;
9374 1.1 christos info->callbacks->einfo
9375 1.1 christos (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
9376 1.1 christos input_bfd, input_section, rel->r_offset,
9377 1.1 christos howto->name, sym_name, mask + 1);
9378 1.1 christos bfd_set_error (bfd_error_bad_value);
9379 1.1 christos ret = FALSE;
9380 1.1 christos }
9381 1.1 christos addend += insn & mask;
9382 1.1 christos }
9383 1.1 christos break;
9384 1.1 christos }
9385 1.1 christos
9386 1.1 christos #ifdef DEBUG
9387 1.1 christos fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9388 1.1 christos "offset = %ld, addend = %ld\n",
9389 1.1 christos howto->name,
9390 1.1 christos (int) r_type,
9391 1.1 christos sym_name,
9392 1.1 christos r_symndx,
9393 1.1 christos (long) rel->r_offset,
9394 1.1 christos (long) addend);
9395 1.3 christos #endif
9396 1.3 christos
9397 1.3 christos if (unresolved_reloc
9398 1.3 christos && !((input_section->flags & SEC_DEBUGGING) != 0
9399 1.3 christos && h->def_dynamic)
9400 1.3 christos && _bfd_elf_section_offset (output_bfd, info, input_section,
9401 1.3 christos rel->r_offset) != (bfd_vma) -1)
9402 1.3 christos {
9403 1.3 christos info->callbacks->einfo
9404 1.3 christos (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
9405 1.3 christos input_bfd, input_section, rel->r_offset,
9406 1.3 christos howto->name,
9407 1.3 christos sym_name);
9408 1.3 christos ret = FALSE;
9409 1.3 christos }
9410 1.3 christos
9411 1.3 christos /* 16-bit fields in insns mostly have signed values, but a
9412 1.3 christos few insns have 16-bit unsigned values. Really, we should
9413 1.3 christos have different reloc types. */
9414 1.3 christos if (howto->complain_on_overflow != complain_overflow_dont
9415 1.3 christos && howto->dst_mask == 0xffff
9416 1.3 christos && (input_section->flags & SEC_CODE) != 0)
9417 1.3 christos {
9418 1.3 christos enum complain_overflow complain = complain_overflow_signed;
9419 1.3 christos
9420 1.3 christos if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9421 1.3 christos {
9422 1.3 christos unsigned int insn;
9423 1.3 christos
9424 1.3 christos insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9425 1.3 christos if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9426 1.1 christos complain = complain_overflow_bitfield;
9427 1.1 christos else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9428 1.1 christos || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9429 1.1 christos || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
9430 1.1 christos complain = complain_overflow_unsigned;
9431 1.3 christos }
9432 1.5 christos if (howto->complain_on_overflow != complain)
9433 1.5 christos {
9434 1.5 christos alt_howto = *howto;
9435 1.5 christos alt_howto.complain_on_overflow = complain;
9436 1.5 christos howto = &alt_howto;
9437 1.5 christos }
9438 1.5 christos }
9439 1.5 christos
9440 1.5 christos r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9441 1.5 christos rel->r_offset, relocation, addend);
9442 1.5 christos
9443 1.5 christos if (r != bfd_reloc_ok)
9444 1.5 christos {
9445 1.1 christos if (r == bfd_reloc_overflow)
9446 1.1 christos {
9447 1.1 christos overflow:
9448 1.1 christos /* On code like "if (foo) foo();" don't report overflow
9449 1.1 christos on a branch to zero when foo is undefined. */
9450 1.1 christos if (!warned
9451 1.1 christos && !(h != NULL
9452 1.1 christos && (h->root.type == bfd_link_hash_undefweak
9453 1.1 christos || h->root.type == bfd_link_hash_undefined)
9454 1.1 christos && is_branch_reloc (r_type)))
9455 1.1 christos {
9456 1.1 christos if (!((*info->callbacks->reloc_overflow)
9457 1.1 christos (info, (h ? &h->root : NULL), sym_name,
9458 1.1 christos howto->name, rel->r_addend,
9459 1.1 christos input_bfd, input_section, rel->r_offset)))
9460 1.1 christos return FALSE;
9461 1.1 christos }
9462 1.3 christos }
9463 1.3 christos else
9464 1.3 christos {
9465 1.3 christos info->callbacks->einfo
9466 1.3 christos (_("%P: %H: %s reloc against `%s': error %d\n"),
9467 1.3 christos input_bfd, input_section, rel->r_offset,
9468 1.3 christos howto->name, sym_name, (int) r);
9469 1.3 christos ret = FALSE;
9470 1.3 christos }
9471 1.3 christos }
9472 1.3 christos }
9473 1.3 christos
9474 1.3 christos #ifdef DEBUG
9475 1.3 christos fprintf (stderr, "\n");
9476 1.3 christos #endif
9477 1.3 christos
9478 1.3 christos if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9479 1.3 christos && input_section->size != input_section->rawsize
9480 1.3 christos && (strcmp (input_section->output_section->name, ".init") == 0
9481 1.3 christos || strcmp (input_section->output_section->name, ".fini") == 0))
9482 1.3 christos {
9483 1.3 christos /* Branch around the trampolines. */
9484 1.3 christos unsigned int insn = B + input_section->size - input_section->rawsize;
9485 1.3 christos bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9486 1.3 christos }
9487 1.3 christos
9488 1.3 christos if (htab->params->ppc476_workaround
9489 1.3 christos && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9490 1.3 christos && (!info->relocatable
9491 1.3 christos || (input_section->output_section->alignment_power
9492 1.3 christos >= htab->params->pagesize_p2)))
9493 1.3 christos {
9494 1.3 christos bfd_vma start_addr, end_addr, addr;
9495 1.3 christos bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9496 1.3 christos
9497 1.3 christos if (relax_info->workaround_size != 0)
9498 1.3 christos {
9499 1.3 christos bfd_byte *p;
9500 1.3 christos unsigned int n;
9501 1.3 christos bfd_byte fill[4];
9502 1.3 christos
9503 1.3 christos bfd_put_32 (input_bfd, BA, fill);
9504 1.3 christos p = contents + input_section->size - relax_info->workaround_size;
9505 1.3 christos n = relax_info->workaround_size >> 2;
9506 1.3 christos while (n--)
9507 1.3 christos {
9508 1.3 christos memcpy (p, fill, 4);
9509 1.3 christos p += 4;
9510 1.3 christos }
9511 1.3 christos }
9512 1.3 christos
9513 1.3 christos /* The idea is: Replace the last instruction on a page with a
9514 1.3 christos branch to a patch area. Put the insn there followed by a
9515 1.3 christos branch back to the next page. Complicated a little by
9516 1.3 christos needing to handle moved conditional branches, and by not
9517 1.3 christos wanting to touch data-in-text. */
9518 1.3 christos
9519 1.3 christos start_addr = (input_section->output_section->vma
9520 1.3 christos + input_section->output_offset);
9521 1.3 christos end_addr = (start_addr + input_section->size
9522 1.3 christos - relax_info->workaround_size);
9523 1.3 christos for (addr = ((start_addr & -pagesize) + pagesize - 4);
9524 1.3 christos addr < end_addr;
9525 1.3 christos addr += pagesize)
9526 1.3 christos {
9527 1.3 christos bfd_vma offset = addr - start_addr;
9528 1.3 christos Elf_Internal_Rela *lo, *hi;
9529 1.3 christos bfd_boolean is_data;
9530 1.3 christos bfd_vma patch_off, patch_addr;
9531 1.3 christos unsigned int insn;
9532 1.3 christos
9533 1.3 christos /* Do we have a data reloc at this offset? If so, leave
9534 1.3 christos the word alone. */
9535 1.3 christos is_data = FALSE;
9536 1.3 christos lo = relocs;
9537 1.3 christos hi = relend;
9538 1.3 christos rel = NULL;
9539 1.3 christos while (lo < hi)
9540 1.3 christos {
9541 1.3 christos rel = lo + (hi - lo) / 2;
9542 1.3 christos if (rel->r_offset < offset)
9543 1.3 christos lo = rel + 1;
9544 1.3 christos else if (rel->r_offset > offset + 3)
9545 1.3 christos hi = rel;
9546 1.3 christos else
9547 1.3 christos {
9548 1.3 christos switch (ELF32_R_TYPE (rel->r_info))
9549 1.3 christos {
9550 1.3 christos case R_PPC_ADDR32:
9551 1.3 christos case R_PPC_UADDR32:
9552 1.3 christos case R_PPC_REL32:
9553 1.3 christos case R_PPC_ADDR30:
9554 1.3 christos is_data = TRUE;
9555 1.3 christos break;
9556 1.3 christos default:
9557 1.3 christos break;
9558 1.3 christos }
9559 1.3 christos break;
9560 1.3 christos }
9561 1.3 christos }
9562 1.3 christos if (is_data)
9563 1.3 christos continue;
9564 1.3 christos
9565 1.3 christos /* Some instructions can be left alone too. Unconditional
9566 1.3 christos branches, except for bcctr with BO=0x14 (bctr, bctrl),
9567 1.3 christos avoid the icache failure.
9568 1.3 christos
9569 1.3 christos The problem occurs due to prefetch across a page boundary
9570 1.3 christos where stale instructions can be fetched from the next
9571 1.3 christos page, and the mechanism for flushing these bad
9572 1.3 christos instructions fails under certain circumstances. The
9573 1.3 christos unconditional branches:
9574 1.3 christos 1) Branch: b, bl, ba, bla,
9575 1.3 christos 2) Branch Conditional: bc, bca, bcl, bcla,
9576 1.3 christos 3) Branch Conditional to Link Register: bclr, bclrl,
9577 1.3 christos where (2) and (3) have BO=0x14 making them unconditional,
9578 1.3 christos prevent the bad prefetch because the prefetch itself is
9579 1.3 christos affected by these instructions. This happens even if the
9580 1.3 christos instruction is not executed.
9581 1.3 christos
9582 1.3 christos A bctr example:
9583 1.3 christos .
9584 1.3 christos . lis 9,new_page@ha
9585 1.3 christos . addi 9,9,new_page@l
9586 1.3 christos . mtctr 9
9587 1.3 christos . bctr
9588 1.3 christos . nop
9589 1.3 christos . nop
9590 1.3 christos . new_page:
9591 1.3 christos .
9592 1.3 christos The bctr is not predicted taken due to ctr not being
9593 1.3 christos ready, so prefetch continues on past the bctr into the
9594 1.3 christos new page which might have stale instructions. If they
9595 1.3 christos fail to be flushed, then they will be executed after the
9596 1.3 christos bctr executes. Either of the following modifications
9597 1.3 christos prevent the bad prefetch from happening in the first
9598 1.3 christos place:
9599 1.3 christos .
9600 1.3 christos . lis 9,new_page@ha lis 9,new_page@ha
9601 1.3 christos . addi 9,9,new_page@l addi 9,9,new_page@l
9602 1.3 christos . mtctr 9 mtctr 9
9603 1.3 christos . bctr bctr
9604 1.3 christos . nop b somewhere_else
9605 1.3 christos . b somewhere_else nop
9606 1.3 christos . new_page: new_page:
9607 1.3 christos . */
9608 1.3 christos insn = bfd_get_32 (input_bfd, contents + offset);
9609 1.3 christos if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9610 1.3 christos || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9611 1.5 christos && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9612 1.5 christos || ((insn & (0x3f << 26)) == (19u << 26)
9613 1.3 christos && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9614 1.3 christos && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9615 1.3 christos continue;
9616 1.3 christos
9617 1.3 christos patch_addr = (start_addr + input_section->size
9618 1.3 christos - relax_info->workaround_size);
9619 1.3 christos patch_addr = (patch_addr + 15) & -16;
9620 1.3 christos patch_off = patch_addr - start_addr;
9621 1.3 christos bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9622 1.3 christos
9623 1.3 christos if (rel != NULL
9624 1.3 christos && rel->r_offset >= offset
9625 1.5 christos && rel->r_offset < offset + 4)
9626 1.5 christos {
9627 1.5 christos asection *sreloc;
9628 1.5 christos
9629 1.5 christos /* If the insn we are patching had a reloc, adjust the
9630 1.5 christos reloc r_offset so that the reloc applies to the moved
9631 1.5 christos location. This matters for -r and --emit-relocs. */
9632 1.5 christos if (rel + 1 != relend)
9633 1.5 christos {
9634 1.5 christos Elf_Internal_Rela tmp = *rel;
9635 1.5 christos
9636 1.5 christos /* Keep the relocs sorted by r_offset. */
9637 1.5 christos memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9638 1.5 christos relend[-1] = tmp;
9639 1.5 christos }
9640 1.5 christos relend[-1].r_offset += patch_off - offset;
9641 1.5 christos
9642 1.5 christos /* Adjust REL16 addends too. */
9643 1.5 christos switch (ELF32_R_TYPE (relend[-1].r_info))
9644 1.5 christos {
9645 1.5 christos case R_PPC_REL16:
9646 1.5 christos case R_PPC_REL16_LO:
9647 1.5 christos case R_PPC_REL16_HI:
9648 1.5 christos case R_PPC_REL16_HA:
9649 1.5 christos relend[-1].r_addend += patch_off - offset;
9650 1.5 christos break;
9651 1.5 christos default:
9652 1.5 christos break;
9653 1.5 christos }
9654 1.5 christos
9655 1.5 christos /* If we are building a PIE or shared library with
9656 1.5 christos non-PIC objects, perhaps we had a dynamic reloc too?
9657 1.5 christos If so, the dynamic reloc must move with the insn. */
9658 1.5 christos sreloc = elf_section_data (input_section)->sreloc;
9659 1.5 christos if (sreloc != NULL)
9660 1.5 christos {
9661 1.5 christos Elf32_External_Rela *slo, *shi, *srelend;
9662 1.5 christos bfd_vma soffset;
9663 1.5 christos
9664 1.5 christos slo = (Elf32_External_Rela *) sreloc->contents;
9665 1.5 christos shi = srelend = slo + sreloc->reloc_count;
9666 1.5 christos soffset = (offset + input_section->output_section->vma
9667 1.5 christos + input_section->output_offset);
9668 1.5 christos while (slo < shi)
9669 1.5 christos {
9670 1.5 christos Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9671 1.5 christos bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9672 1.5 christos &outrel);
9673 1.5 christos if (outrel.r_offset < soffset)
9674 1.5 christos slo = srel + 1;
9675 1.5 christos else if (outrel.r_offset > soffset + 3)
9676 1.3 christos shi = srel;
9677 1.3 christos else
9678 1.3 christos {
9679 1.3 christos if (srel + 1 != srelend)
9680 1.3 christos {
9681 1.3 christos memmove (srel, srel + 1,
9682 1.3 christos (srelend - (srel + 1)) * sizeof (*srel));
9683 1.3 christos srel = srelend - 1;
9684 1.3 christos }
9685 1.3 christos outrel.r_offset += patch_off - offset;
9686 1.3 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9687 1.3 christos (bfd_byte *) srel);
9688 1.3 christos break;
9689 1.3 christos }
9690 1.3 christos }
9691 1.3 christos }
9692 1.3 christos }
9693 1.3 christos else
9694 1.3 christos rel = NULL;
9695 1.3 christos
9696 1.3 christos if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9697 1.3 christos && (insn & 2) == 0 /* relative */)
9698 1.3 christos {
9699 1.3 christos bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9700 1.3 christos
9701 1.3 christos delta += offset - patch_off;
9702 1.3 christos if (info->relocatable && rel != NULL)
9703 1.3 christos delta = 0;
9704 1.3 christos if (!info->relocatable && rel != NULL)
9705 1.3 christos {
9706 1.3 christos enum elf_ppc_reloc_type r_type;
9707 1.3 christos
9708 1.3 christos r_type = ELF32_R_TYPE (relend[-1].r_info);
9709 1.3 christos if (r_type == R_PPC_REL14_BRTAKEN)
9710 1.3 christos insn |= BRANCH_PREDICT_BIT;
9711 1.3 christos else if (r_type == R_PPC_REL14_BRNTAKEN)
9712 1.3 christos insn &= ~BRANCH_PREDICT_BIT;
9713 1.3 christos else
9714 1.3 christos BFD_ASSERT (r_type == R_PPC_REL14);
9715 1.3 christos
9716 1.3 christos if ((r_type == R_PPC_REL14_BRTAKEN
9717 1.3 christos || r_type == R_PPC_REL14_BRNTAKEN)
9718 1.3 christos && delta + 0x8000 < 0x10000
9719 1.3 christos && (bfd_signed_vma) delta < 0)
9720 1.3 christos insn ^= BRANCH_PREDICT_BIT;
9721 1.3 christos }
9722 1.3 christos if (delta + 0x8000 < 0x10000)
9723 1.3 christos {
9724 1.3 christos bfd_put_32 (input_bfd,
9725 1.3 christos (insn & ~0xfffc) | (delta & 0xfffc),
9726 1.3 christos contents + patch_off);
9727 1.3 christos patch_off += 4;
9728 1.3 christos bfd_put_32 (input_bfd,
9729 1.3 christos B | ((offset + 4 - patch_off) & 0x3fffffc),
9730 1.3 christos contents + patch_off);
9731 1.3 christos patch_off += 4;
9732 1.3 christos }
9733 1.3 christos else
9734 1.3 christos {
9735 1.3 christos if (rel != NULL)
9736 1.3 christos {
9737 1.3 christos unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9738 1.3 christos
9739 1.3 christos relend[-1].r_offset += 8;
9740 1.3 christos relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9741 1.3 christos }
9742 1.3 christos bfd_put_32 (input_bfd,
9743 1.3 christos (insn & ~0xfffc) | 8,
9744 1.3 christos contents + patch_off);
9745 1.3 christos patch_off += 4;
9746 1.3 christos bfd_put_32 (input_bfd,
9747 1.3 christos B | ((offset + 4 - patch_off) & 0x3fffffc),
9748 1.3 christos contents + patch_off);
9749 1.3 christos patch_off += 4;
9750 1.3 christos bfd_put_32 (input_bfd,
9751 1.3 christos B | ((delta - 8) & 0x3fffffc),
9752 1.3 christos contents + patch_off);
9753 1.3 christos patch_off += 4;
9754 1.1 christos }
9755 1.1 christos }
9756 1.1 christos else
9757 1.1 christos {
9758 1.1 christos bfd_put_32 (input_bfd, insn, contents + patch_off);
9759 1.1 christos patch_off += 4;
9760 1.1 christos bfd_put_32 (input_bfd,
9761 1.1 christos B | ((offset + 4 - patch_off) & 0x3fffffc),
9762 1.1 christos contents + patch_off);
9763 1.1 christos patch_off += 4;
9764 1.1 christos }
9765 1.1 christos BFD_ASSERT (patch_off <= input_section->size);
9766 1.1 christos relax_info->workaround_size = input_section->size - patch_off;
9767 1.1 christos }
9768 1.1 christos }
9769 1.1 christos
9770 1.1 christos return ret;
9771 1.1 christos }
9772 1.1 christos
9773 1.1 christos /* Finish up dynamic symbol handling. We set the contents of various
9775 1.1 christos dynamic sections here. */
9776 1.1 christos
9777 1.1 christos static bfd_boolean
9778 1.1 christos ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9779 1.1 christos struct bfd_link_info *info,
9780 1.1 christos struct elf_link_hash_entry *h,
9781 1.1 christos Elf_Internal_Sym *sym)
9782 1.1 christos {
9783 1.1 christos struct ppc_elf_link_hash_table *htab;
9784 1.1 christos struct plt_entry *ent;
9785 1.1 christos bfd_boolean doneone;
9786 1.1 christos
9787 1.1 christos #ifdef DEBUG
9788 1.1 christos fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9789 1.1 christos h->root.root.string);
9790 1.1 christos #endif
9791 1.1 christos
9792 1.1 christos htab = ppc_elf_hash_table (info);
9793 1.1 christos BFD_ASSERT (htab->elf.dynobj != NULL);
9794 1.1 christos
9795 1.1 christos doneone = FALSE;
9796 1.1 christos for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9797 1.1 christos if (ent->plt.offset != (bfd_vma) -1)
9798 1.1 christos {
9799 1.1 christos if (!doneone)
9800 1.1 christos {
9801 1.1 christos Elf_Internal_Rela rela;
9802 1.1 christos bfd_byte *loc;
9803 1.1 christos bfd_vma reloc_index;
9804 1.1 christos
9805 1.1 christos if (htab->plt_type == PLT_NEW
9806 1.1 christos || !htab->elf.dynamic_sections_created
9807 1.1 christos || h->dynindx == -1)
9808 1.1 christos reloc_index = ent->plt.offset / 4;
9809 1.1 christos else
9810 1.1 christos {
9811 1.1 christos reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
9812 1.1 christos / htab->plt_slot_size);
9813 1.1 christos if (reloc_index > PLT_NUM_SINGLE_ENTRIES
9814 1.1 christos && htab->plt_type == PLT_OLD)
9815 1.1 christos reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
9816 1.1 christos }
9817 1.1 christos
9818 1.1 christos /* This symbol has an entry in the procedure linkage table.
9819 1.1 christos Set it up. */
9820 1.1 christos if (htab->plt_type == PLT_VXWORKS
9821 1.1 christos && htab->elf.dynamic_sections_created
9822 1.1 christos && h->dynindx != -1)
9823 1.1 christos {
9824 1.1 christos bfd_vma got_offset;
9825 1.1 christos const bfd_vma *plt_entry;
9826 1.1 christos
9827 1.1 christos /* The first three entries in .got.plt are reserved. */
9828 1.1 christos got_offset = (reloc_index + 3) * 4;
9829 1.1 christos
9830 1.1 christos /* Use the right PLT. */
9831 1.1 christos plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
9832 1.1 christos : ppc_elf_vxworks_plt_entry;
9833 1.1 christos
9834 1.1 christos /* Fill in the .plt on VxWorks. */
9835 1.1 christos if (info->shared)
9836 1.1 christos {
9837 1.1 christos bfd_put_32 (output_bfd,
9838 1.1 christos plt_entry[0] | PPC_HA (got_offset),
9839 1.1 christos htab->plt->contents + ent->plt.offset + 0);
9840 1.1 christos bfd_put_32 (output_bfd,
9841 1.1 christos plt_entry[1] | PPC_LO (got_offset),
9842 1.1 christos htab->plt->contents + ent->plt.offset + 4);
9843 1.1 christos }
9844 1.1 christos else
9845 1.1 christos {
9846 1.1 christos bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
9847 1.1 christos
9848 1.1 christos bfd_put_32 (output_bfd,
9849 1.1 christos plt_entry[0] | PPC_HA (got_loc),
9850 1.1 christos htab->plt->contents + ent->plt.offset + 0);
9851 1.1 christos bfd_put_32 (output_bfd,
9852 1.1 christos plt_entry[1] | PPC_LO (got_loc),
9853 1.1 christos htab->plt->contents + ent->plt.offset + 4);
9854 1.1 christos }
9855 1.1 christos
9856 1.1 christos bfd_put_32 (output_bfd, plt_entry[2],
9857 1.1 christos htab->plt->contents + ent->plt.offset + 8);
9858 1.1 christos bfd_put_32 (output_bfd, plt_entry[3],
9859 1.1 christos htab->plt->contents + ent->plt.offset + 12);
9860 1.1 christos
9861 1.1 christos /* This instruction is an immediate load. The value loaded is
9862 1.1 christos the byte offset of the R_PPC_JMP_SLOT relocation from the
9863 1.1 christos start of the .rela.plt section. The value is stored in the
9864 1.1 christos low-order 16 bits of the load instruction. */
9865 1.1 christos /* NOTE: It appears that this is now an index rather than a
9866 1.1 christos prescaled offset. */
9867 1.1 christos bfd_put_32 (output_bfd,
9868 1.1 christos plt_entry[4] | reloc_index,
9869 1.1 christos htab->plt->contents + ent->plt.offset + 16);
9870 1.1 christos /* This instruction is a PC-relative branch whose target is
9871 1.1 christos the start of the PLT section. The address of this branch
9872 1.1 christos instruction is 20 bytes beyond the start of this PLT entry.
9873 1.1 christos The address is encoded in bits 6-29, inclusive. The value
9874 1.1 christos stored is right-shifted by two bits, permitting a 26-bit
9875 1.1 christos offset. */
9876 1.1 christos bfd_put_32 (output_bfd,
9877 1.1 christos (plt_entry[5]
9878 1.1 christos | (-(ent->plt.offset + 20) & 0x03fffffc)),
9879 1.1 christos htab->plt->contents + ent->plt.offset + 20);
9880 1.1 christos bfd_put_32 (output_bfd, plt_entry[6],
9881 1.1 christos htab->plt->contents + ent->plt.offset + 24);
9882 1.1 christos bfd_put_32 (output_bfd, plt_entry[7],
9883 1.1 christos htab->plt->contents + ent->plt.offset + 28);
9884 1.1 christos
9885 1.1 christos /* Fill in the GOT entry corresponding to this PLT slot with
9886 1.1 christos the address immediately after the "bctr" instruction
9887 1.1 christos in this PLT entry. */
9888 1.1 christos bfd_put_32 (output_bfd, (htab->plt->output_section->vma
9889 1.1 christos + htab->plt->output_offset
9890 1.1 christos + ent->plt.offset + 16),
9891 1.1 christos htab->sgotplt->contents + got_offset);
9892 1.1 christos
9893 1.1 christos if (!info->shared)
9894 1.1 christos {
9895 1.1 christos /* Fill in a couple of entries in .rela.plt.unloaded. */
9896 1.1 christos loc = htab->srelplt2->contents
9897 1.1 christos + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
9898 1.1 christos * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
9899 1.1 christos * sizeof (Elf32_External_Rela));
9900 1.1 christos
9901 1.1 christos /* Provide the @ha relocation for the first instruction. */
9902 1.1 christos rela.r_offset = (htab->plt->output_section->vma
9903 1.1 christos + htab->plt->output_offset
9904 1.1 christos + ent->plt.offset + 2);
9905 1.1 christos rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9906 1.1 christos R_PPC_ADDR16_HA);
9907 1.1 christos rela.r_addend = got_offset;
9908 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9909 1.1 christos loc += sizeof (Elf32_External_Rela);
9910 1.1 christos
9911 1.1 christos /* Provide the @l relocation for the second instruction. */
9912 1.1 christos rela.r_offset = (htab->plt->output_section->vma
9913 1.1 christos + htab->plt->output_offset
9914 1.1 christos + ent->plt.offset + 6);
9915 1.1 christos rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9916 1.1 christos R_PPC_ADDR16_LO);
9917 1.1 christos rela.r_addend = got_offset;
9918 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9919 1.1 christos loc += sizeof (Elf32_External_Rela);
9920 1.1 christos
9921 1.1 christos /* Provide a relocation for the GOT entry corresponding to this
9922 1.1 christos PLT slot. Point it at the middle of the .plt entry. */
9923 1.1 christos rela.r_offset = (htab->sgotplt->output_section->vma
9924 1.1 christos + htab->sgotplt->output_offset
9925 1.1 christos + got_offset);
9926 1.1 christos rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9927 1.1 christos R_PPC_ADDR32);
9928 1.1 christos rela.r_addend = ent->plt.offset + 16;
9929 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9930 1.1 christos }
9931 1.1 christos
9932 1.1 christos /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
9933 1.1 christos In particular, the offset for the relocation is not the
9934 1.1 christos address of the PLT entry for this function, as specified
9935 1.1 christos by the ABI. Instead, the offset is set to the address of
9936 1.1 christos the GOT slot for this function. See EABI 4.4.4.1. */
9937 1.1 christos rela.r_offset = (htab->sgotplt->output_section->vma
9938 1.1 christos + htab->sgotplt->output_offset
9939 1.1 christos + got_offset);
9940 1.1 christos
9941 1.1 christos }
9942 1.1 christos else
9943 1.1 christos {
9944 1.1 christos asection *splt = htab->plt;
9945 1.1 christos if (!htab->elf.dynamic_sections_created
9946 1.1 christos || h->dynindx == -1)
9947 1.1 christos splt = htab->iplt;
9948 1.1 christos
9949 1.1 christos rela.r_offset = (splt->output_section->vma
9950 1.1 christos + splt->output_offset
9951 1.1 christos + ent->plt.offset);
9952 1.1 christos if (htab->plt_type == PLT_OLD
9953 1.1 christos || !htab->elf.dynamic_sections_created
9954 1.1 christos || h->dynindx == -1)
9955 1.1 christos {
9956 1.1 christos /* We don't need to fill in the .plt. The ppc dynamic
9957 1.1 christos linker will fill it in. */
9958 1.1 christos }
9959 1.1 christos else
9960 1.1 christos {
9961 1.1 christos bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
9962 1.1 christos + htab->glink->output_section->vma
9963 1.1 christos + htab->glink->output_offset);
9964 1.1 christos bfd_put_32 (output_bfd, val,
9965 1.1 christos splt->contents + ent->plt.offset);
9966 1.1 christos }
9967 1.1 christos }
9968 1.1 christos
9969 1.1 christos /* Fill in the entry in the .rela.plt section. */
9970 1.1 christos rela.r_addend = 0;
9971 1.1 christos if (!htab->elf.dynamic_sections_created
9972 1.1 christos || h->dynindx == -1)
9973 1.1 christos {
9974 1.1 christos BFD_ASSERT (h->type == STT_GNU_IFUNC
9975 1.1 christos && h->def_regular
9976 1.1 christos && (h->root.type == bfd_link_hash_defined
9977 1.1 christos || h->root.type == bfd_link_hash_defweak));
9978 1.1 christos rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
9979 1.1 christos rela.r_addend = SYM_VAL (h);
9980 1.1 christos }
9981 1.1 christos else
9982 1.1 christos rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
9983 1.1 christos
9984 1.1 christos if (!htab->elf.dynamic_sections_created
9985 1.1 christos || h->dynindx == -1)
9986 1.1 christos loc = (htab->reliplt->contents
9987 1.1 christos + (htab->reliplt->reloc_count++
9988 1.1 christos * sizeof (Elf32_External_Rela)));
9989 1.1 christos else
9990 1.1 christos loc = (htab->relplt->contents
9991 1.1 christos + reloc_index * sizeof (Elf32_External_Rela));
9992 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9993 1.1 christos
9994 1.1 christos if (!h->def_regular)
9995 1.1 christos {
9996 1.1 christos /* Mark the symbol as undefined, rather than as
9997 1.1 christos defined in the .plt section. Leave the value if
9998 1.1 christos there were any relocations where pointer equality
9999 1.1 christos matters (this is a clue for the dynamic linker, to
10000 1.1 christos make function pointer comparisons work between an
10001 1.1 christos application and shared library), otherwise set it
10002 1.1 christos to zero. */
10003 1.1 christos sym->st_shndx = SHN_UNDEF;
10004 1.1 christos if (!h->pointer_equality_needed)
10005 1.1 christos sym->st_value = 0;
10006 1.1 christos else if (!h->ref_regular_nonweak)
10007 1.1 christos {
10008 1.1 christos /* This breaks function pointer comparisons, but
10009 1.1 christos that is better than breaking tests for a NULL
10010 1.1 christos function pointer. */
10011 1.1 christos sym->st_value = 0;
10012 1.1 christos }
10013 1.1 christos }
10014 1.1 christos else if (h->type == STT_GNU_IFUNC
10015 1.1 christos && !info->shared)
10016 1.1 christos {
10017 1.1 christos /* Set the value of ifunc symbols in a non-pie
10018 1.1 christos executable to the glink entry. This is to avoid
10019 1.1 christos text relocations. We can't do this for ifunc in
10020 1.1 christos allocate_dynrelocs, as we do for normal dynamic
10021 1.1 christos function symbols with plt entries, because we need
10022 1.1 christos to keep the original value around for the ifunc
10023 1.1 christos relocation. */
10024 1.1 christos sym->st_shndx = (_bfd_elf_section_from_bfd_section
10025 1.1 christos (output_bfd, htab->glink->output_section));
10026 1.1 christos sym->st_value = (ent->glink_offset
10027 1.1 christos + htab->glink->output_offset
10028 1.3 christos + htab->glink->output_section->vma);
10029 1.1 christos }
10030 1.1 christos doneone = TRUE;
10031 1.1 christos }
10032 1.1 christos
10033 1.1 christos if (htab->plt_type == PLT_NEW
10034 1.1 christos || !htab->elf.dynamic_sections_created
10035 1.1 christos || h->dynindx == -1)
10036 1.1 christos {
10037 1.1 christos unsigned char *p;
10038 1.1 christos asection *splt = htab->plt;
10039 1.1 christos if (!htab->elf.dynamic_sections_created
10040 1.1 christos || h->dynindx == -1)
10041 1.1 christos splt = htab->iplt;
10042 1.1 christos
10043 1.1 christos p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10044 1.1 christos
10045 1.1 christos if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
10046 1.1 christos {
10047 1.1 christos bfd_put_32 (output_bfd, LWZ_11_3, p);
10048 1.1 christos p += 4;
10049 1.1 christos bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
10050 1.1 christos p += 4;
10051 1.1 christos bfd_put_32 (output_bfd, MR_0_3, p);
10052 1.1 christos p += 4;
10053 1.1 christos bfd_put_32 (output_bfd, CMPWI_11_0, p);
10054 1.1 christos p += 4;
10055 1.1 christos bfd_put_32 (output_bfd, ADD_3_12_2, p);
10056 1.1 christos p += 4;
10057 1.1 christos bfd_put_32 (output_bfd, BEQLR, p);
10058 1.1 christos p += 4;
10059 1.1 christos bfd_put_32 (output_bfd, MR_3_0, p);
10060 1.1 christos p += 4;
10061 1.1 christos bfd_put_32 (output_bfd, NOP, p);
10062 1.1 christos p += 4;
10063 1.1 christos }
10064 1.1 christos
10065 1.1 christos write_glink_stub (ent, splt, p, info);
10066 1.1 christos
10067 1.1 christos if (!info->shared)
10068 1.1 christos /* We only need one non-PIC glink stub. */
10069 1.1 christos break;
10070 1.1 christos }
10071 1.1 christos else
10072 1.1 christos break;
10073 1.1 christos }
10074 1.1 christos
10075 1.1 christos if (h->needs_copy)
10076 1.1 christos {
10077 1.1 christos asection *s;
10078 1.1 christos Elf_Internal_Rela rela;
10079 1.1 christos bfd_byte *loc;
10080 1.1 christos
10081 1.1 christos /* This symbols needs a copy reloc. Set it up. */
10082 1.1 christos
10083 1.1 christos #ifdef DEBUG
10084 1.1 christos fprintf (stderr, ", copy");
10085 1.1 christos #endif
10086 1.1 christos
10087 1.1 christos BFD_ASSERT (h->dynindx != -1);
10088 1.1 christos
10089 1.1 christos if (ppc_elf_hash_entry (h)->has_sda_refs)
10090 1.1 christos s = htab->relsbss;
10091 1.1 christos else
10092 1.1 christos s = htab->relbss;
10093 1.1 christos BFD_ASSERT (s != NULL);
10094 1.1 christos
10095 1.1 christos rela.r_offset = SYM_VAL (h);
10096 1.1 christos rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10097 1.1 christos rela.r_addend = 0;
10098 1.1 christos loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10099 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10100 1.1 christos }
10101 1.1 christos
10102 1.1 christos #ifdef DEBUG
10103 1.1 christos fprintf (stderr, "\n");
10104 1.1 christos #endif
10105 1.1 christos
10106 1.1 christos return TRUE;
10107 1.1 christos }
10108 1.1 christos
10109 1.1 christos static enum elf_reloc_type_class
10111 1.1 christos ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10112 1.1 christos const asection *rel_sec,
10113 1.1 christos const Elf_Internal_Rela *rela)
10114 1.1 christos {
10115 1.1 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10116 1.1 christos
10117 1.1 christos if (rel_sec == htab->reliplt)
10118 1.1 christos return reloc_class_ifunc;
10119 1.1 christos
10120 1.1 christos switch (ELF32_R_TYPE (rela->r_info))
10121 1.1 christos {
10122 1.1 christos case R_PPC_RELATIVE:
10123 1.1 christos return reloc_class_relative;
10124 1.1 christos case R_PPC_JMP_SLOT:
10125 1.1 christos return reloc_class_plt;
10126 1.1 christos case R_PPC_COPY:
10127 1.1 christos return reloc_class_copy;
10128 1.1 christos default:
10129 1.1 christos return reloc_class_normal;
10130 1.1 christos }
10131 1.1 christos }
10132 1.1 christos
10133 1.1 christos /* Finish up the dynamic sections. */
10135 1.1 christos
10136 1.1 christos static bfd_boolean
10137 1.1 christos ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10138 1.1 christos struct bfd_link_info *info)
10139 1.1 christos {
10140 1.1 christos asection *sdyn;
10141 1.1 christos asection *splt;
10142 1.1 christos struct ppc_elf_link_hash_table *htab;
10143 1.1 christos bfd_vma got;
10144 1.1 christos bfd *dynobj;
10145 1.1 christos bfd_boolean ret = TRUE;
10146 1.1 christos
10147 1.1 christos #ifdef DEBUG
10148 1.1 christos fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10149 1.1 christos #endif
10150 1.1 christos
10151 1.1 christos htab = ppc_elf_hash_table (info);
10152 1.1 christos dynobj = elf_hash_table (info)->dynobj;
10153 1.1 christos sdyn = bfd_get_linker_section (dynobj, ".dynamic");
10154 1.1 christos if (htab->is_vxworks)
10155 1.1 christos splt = bfd_get_linker_section (dynobj, ".plt");
10156 1.1 christos else
10157 1.1 christos splt = NULL;
10158 1.1 christos
10159 1.1 christos got = 0;
10160 1.1 christos if (htab->elf.hgot != NULL)
10161 1.1 christos got = SYM_VAL (htab->elf.hgot);
10162 1.1 christos
10163 1.1 christos if (htab->elf.dynamic_sections_created)
10164 1.1 christos {
10165 1.1 christos Elf32_External_Dyn *dyncon, *dynconend;
10166 1.1 christos
10167 1.1 christos BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
10168 1.1 christos
10169 1.1 christos dyncon = (Elf32_External_Dyn *) sdyn->contents;
10170 1.1 christos dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10171 1.1 christos for (; dyncon < dynconend; dyncon++)
10172 1.1 christos {
10173 1.1 christos Elf_Internal_Dyn dyn;
10174 1.1 christos asection *s;
10175 1.1 christos
10176 1.1 christos bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
10177 1.1 christos
10178 1.1 christos switch (dyn.d_tag)
10179 1.1 christos {
10180 1.1 christos case DT_PLTGOT:
10181 1.1 christos if (htab->is_vxworks)
10182 1.1 christos s = htab->sgotplt;
10183 1.1 christos else
10184 1.1 christos s = htab->plt;
10185 1.1 christos dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10186 1.1 christos break;
10187 1.1 christos
10188 1.1 christos case DT_PLTRELSZ:
10189 1.1 christos dyn.d_un.d_val = htab->relplt->size;
10190 1.1 christos break;
10191 1.1 christos
10192 1.1 christos case DT_JMPREL:
10193 1.1 christos s = htab->relplt;
10194 1.1 christos dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10195 1.1 christos break;
10196 1.1 christos
10197 1.1 christos case DT_PPC_GOT:
10198 1.1 christos dyn.d_un.d_ptr = got;
10199 1.1 christos break;
10200 1.1 christos
10201 1.1 christos case DT_RELASZ:
10202 1.1 christos if (htab->is_vxworks)
10203 1.1 christos {
10204 1.1 christos if (htab->relplt)
10205 1.1 christos dyn.d_un.d_ptr -= htab->relplt->size;
10206 1.1 christos break;
10207 1.1 christos }
10208 1.1 christos continue;
10209 1.1 christos
10210 1.1 christos default:
10211 1.1 christos if (htab->is_vxworks
10212 1.1 christos && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10213 1.1 christos break;
10214 1.1 christos continue;
10215 1.1 christos }
10216 1.1 christos
10217 1.1 christos bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10218 1.1 christos }
10219 1.1 christos }
10220 1.1 christos
10221 1.1 christos if (htab->got != NULL)
10222 1.1 christos {
10223 1.1 christos if (htab->elf.hgot->root.u.def.section == htab->got
10224 1.1 christos || htab->elf.hgot->root.u.def.section == htab->sgotplt)
10225 1.1 christos {
10226 1.1 christos unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
10227 1.1 christos
10228 1.1 christos p += htab->elf.hgot->root.u.def.value;
10229 1.1 christos if (htab->plt_type == PLT_OLD)
10230 1.1 christos {
10231 1.1 christos /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10232 1.1 christos so that a function can easily find the address of
10233 1.1 christos _GLOBAL_OFFSET_TABLE_. */
10234 1.1 christos BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10235 1.1 christos < htab->elf.hgot->root.u.def.section->size);
10236 1.1 christos bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10237 1.1 christos }
10238 1.1 christos
10239 1.1 christos if (sdyn != NULL)
10240 1.1 christos {
10241 1.1 christos bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10242 1.1 christos BFD_ASSERT (htab->elf.hgot->root.u.def.value
10243 1.1 christos < htab->elf.hgot->root.u.def.section->size);
10244 1.1 christos bfd_put_32 (output_bfd, val, p);
10245 1.1 christos }
10246 1.1 christos }
10247 1.1 christos else
10248 1.1 christos {
10249 1.1 christos info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
10250 1.1 christos htab->elf.hgot->root.root.string,
10251 1.1 christos (htab->sgotplt != NULL
10252 1.1 christos ? htab->sgotplt->name : htab->got->name));
10253 1.1 christos bfd_set_error (bfd_error_bad_value);
10254 1.1 christos ret = FALSE;
10255 1.1 christos }
10256 1.1 christos
10257 1.1 christos elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
10258 1.1 christos }
10259 1.1 christos
10260 1.1 christos /* Fill in the first entry in the VxWorks procedure linkage table. */
10261 1.1 christos if (splt && splt->size > 0)
10262 1.1 christos {
10263 1.1 christos /* Use the right PLT. */
10264 1.1 christos const bfd_vma *plt_entry = (info->shared
10265 1.1 christos ? ppc_elf_vxworks_pic_plt0_entry
10266 1.1 christos : ppc_elf_vxworks_plt0_entry);
10267 1.1 christos
10268 1.1 christos if (!info->shared)
10269 1.1 christos {
10270 1.1 christos bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10271 1.1 christos
10272 1.1 christos bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10273 1.1 christos splt->contents + 0);
10274 1.1 christos bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10275 1.1 christos splt->contents + 4);
10276 1.1 christos }
10277 1.1 christos else
10278 1.1 christos {
10279 1.1 christos bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10280 1.1 christos bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10281 1.1 christos }
10282 1.1 christos bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10283 1.1 christos bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10284 1.1 christos bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10285 1.1 christos bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10286 1.1 christos bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10287 1.1 christos bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10288 1.1 christos
10289 1.1 christos if (! info->shared)
10290 1.1 christos {
10291 1.1 christos Elf_Internal_Rela rela;
10292 1.1 christos bfd_byte *loc;
10293 1.1 christos
10294 1.1 christos loc = htab->srelplt2->contents;
10295 1.1 christos
10296 1.1 christos /* Output the @ha relocation for the first instruction. */
10297 1.1 christos rela.r_offset = (htab->plt->output_section->vma
10298 1.1 christos + htab->plt->output_offset
10299 1.1 christos + 2);
10300 1.1 christos rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10301 1.1 christos rela.r_addend = 0;
10302 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10303 1.1 christos loc += sizeof (Elf32_External_Rela);
10304 1.1 christos
10305 1.1 christos /* Output the @l relocation for the second instruction. */
10306 1.1 christos rela.r_offset = (htab->plt->output_section->vma
10307 1.1 christos + htab->plt->output_offset
10308 1.1 christos + 6);
10309 1.1 christos rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10310 1.1 christos rela.r_addend = 0;
10311 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10312 1.1 christos loc += sizeof (Elf32_External_Rela);
10313 1.1 christos
10314 1.1 christos /* Fix up the remaining relocations. They may have the wrong
10315 1.1 christos symbol index for _G_O_T_ or _P_L_T_ depending on the order
10316 1.1 christos in which symbols were output. */
10317 1.1 christos while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10318 1.1 christos {
10319 1.1 christos Elf_Internal_Rela rel;
10320 1.1 christos
10321 1.1 christos bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10322 1.1 christos rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10323 1.1 christos bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10324 1.1 christos loc += sizeof (Elf32_External_Rela);
10325 1.1 christos
10326 1.1 christos bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10327 1.1 christos rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10328 1.1 christos bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10329 1.1 christos loc += sizeof (Elf32_External_Rela);
10330 1.1 christos
10331 1.1 christos bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10332 1.1 christos rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10333 1.1 christos bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10334 1.1 christos loc += sizeof (Elf32_External_Rela);
10335 1.1 christos }
10336 1.1 christos }
10337 1.1 christos }
10338 1.1 christos
10339 1.1 christos if (htab->glink != NULL
10340 1.1 christos && htab->glink->contents != NULL
10341 1.1 christos && htab->elf.dynamic_sections_created)
10342 1.1 christos {
10343 1.1 christos unsigned char *p;
10344 1.1 christos unsigned char *endp;
10345 1.1 christos bfd_vma res0;
10346 1.1 christos unsigned int i;
10347 1.1 christos
10348 1.1 christos /*
10349 1.1 christos * PIC glink code is the following:
10350 1.1 christos *
10351 1.1 christos * # ith PLT code stub.
10352 1.1 christos * addis 11,30,(plt+(i-1)*4-got)@ha
10353 1.1 christos * lwz 11,(plt+(i-1)*4-got)@l(11)
10354 1.1 christos * mtctr 11
10355 1.1 christos * bctr
10356 1.1 christos *
10357 1.1 christos * # A table of branches, one for each plt entry.
10358 1.1 christos * # The idea is that the plt call stub loads ctr and r11 with these
10359 1.1 christos * # addresses, so (r11 - res_0) gives the plt index * 4.
10360 1.1 christos * res_0: b PLTresolve
10361 1.1 christos * res_1: b PLTresolve
10362 1.1 christos * .
10363 1.1 christos * # Some number of entries towards the end can be nops
10364 1.1 christos * res_n_m3: nop
10365 1.1 christos * res_n_m2: nop
10366 1.1 christos * res_n_m1:
10367 1.1 christos *
10368 1.1 christos * PLTresolve:
10369 1.1 christos * addis 11,11,(1f-res_0)@ha
10370 1.1 christos * mflr 0
10371 1.1 christos * bcl 20,31,1f
10372 1.1 christos * 1: addi 11,11,(1b-res_0)@l
10373 1.1 christos * mflr 12
10374 1.1 christos * mtlr 0
10375 1.1 christos * sub 11,11,12 # r11 = index * 4
10376 1.1 christos * addis 12,12,(got+4-1b)@ha
10377 1.1 christos * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10378 1.1 christos * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10379 1.1 christos * mtctr 0
10380 1.1 christos * add 0,11,11
10381 1.1 christos * add 11,0,11 # r11 = index * 12 = reloc offset.
10382 1.1 christos * bctr
10383 1.1 christos */
10384 1.1 christos static const unsigned int pic_plt_resolve[] =
10385 1.1 christos {
10386 1.1 christos ADDIS_11_11,
10387 1.1 christos MFLR_0,
10388 1.1 christos BCL_20_31,
10389 1.1 christos ADDI_11_11,
10390 1.1 christos MFLR_12,
10391 1.1 christos MTLR_0,
10392 1.1 christos SUB_11_11_12,
10393 1.1 christos ADDIS_12_12,
10394 1.1 christos LWZ_0_12,
10395 1.1 christos LWZ_12_12,
10396 1.1 christos MTCTR_0,
10397 1.1 christos ADD_0_11_11,
10398 1.1 christos ADD_11_0_11,
10399 1.1 christos BCTR,
10400 1.1 christos NOP,
10401 1.1 christos NOP
10402 1.1 christos };
10403 1.1 christos
10404 1.1 christos /*
10405 1.1 christos * Non-PIC glink code is a little simpler.
10406 1.1 christos *
10407 1.1 christos * # ith PLT code stub.
10408 1.1 christos * lis 11,(plt+(i-1)*4)@ha
10409 1.1 christos * lwz 11,(plt+(i-1)*4)@l(11)
10410 1.1 christos * mtctr 11
10411 1.1 christos * bctr
10412 1.1 christos *
10413 1.1 christos * The branch table is the same, then comes
10414 1.1 christos *
10415 1.1 christos * PLTresolve:
10416 1.1 christos * lis 12,(got+4)@ha
10417 1.1 christos * addis 11,11,(-res_0)@ha
10418 1.1 christos * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10419 1.1 christos * addi 11,11,(-res_0)@l # r11 = index * 4
10420 1.1 christos * mtctr 0
10421 1.1 christos * add 0,11,11
10422 1.1 christos * lwz 12,(got+8)@l(12) # got[2] contains the map address
10423 1.1 christos * add 11,0,11 # r11 = index * 12 = reloc offset.
10424 1.1 christos * bctr
10425 1.1 christos */
10426 1.1 christos static const unsigned int plt_resolve[] =
10427 1.1 christos {
10428 1.1 christos LIS_12,
10429 1.1 christos ADDIS_11_11,
10430 1.1 christos LWZ_0_12,
10431 1.1 christos ADDI_11_11,
10432 1.1 christos MTCTR_0,
10433 1.1 christos ADD_0_11_11,
10434 1.1 christos LWZ_12_12,
10435 1.1 christos ADD_11_0_11,
10436 1.1 christos BCTR,
10437 1.1 christos NOP,
10438 1.3 christos NOP,
10439 1.1 christos NOP,
10440 1.1 christos NOP,
10441 1.1 christos NOP,
10442 1.1 christos NOP,
10443 1.1 christos NOP
10444 1.1 christos };
10445 1.1 christos
10446 1.1 christos if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10447 1.1 christos abort ();
10448 1.1 christos if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
10449 1.1 christos abort ();
10450 1.1 christos
10451 1.1 christos /* Build the branch table, one for each plt entry (less one),
10452 1.1 christos and perhaps some padding. */
10453 1.3 christos p = htab->glink->contents;
10454 1.3 christos p += htab->glink_pltresolve;
10455 1.3 christos endp = htab->glink->contents;
10456 1.3 christos endp += htab->glink->size - GLINK_PLTRESOLVE;
10457 1.3 christos while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10458 1.3 christos {
10459 1.3 christos bfd_put_32 (output_bfd, B + endp - p, p);
10460 1.3 christos p += 4;
10461 1.3 christos }
10462 1.3 christos while (p < endp)
10463 1.3 christos {
10464 1.3 christos bfd_put_32 (output_bfd, NOP, p);
10465 1.3 christos p += 4;
10466 1.3 christos }
10467 1.3 christos
10468 1.3 christos res0 = (htab->glink_pltresolve
10469 1.3 christos + htab->glink->output_section->vma
10470 1.3 christos + htab->glink->output_offset);
10471 1.3 christos
10472 1.3 christos if (htab->params->ppc476_workaround)
10473 1.3 christos {
10474 1.3 christos /* Ensure that a call stub at the end of a page doesn't
10475 1.3 christos result in prefetch over the end of the page into the
10476 1.3 christos glink branch table. */
10477 1.3 christos bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10478 1.3 christos bfd_vma page_addr;
10479 1.3 christos bfd_vma glink_start = (htab->glink->output_section->vma
10480 1.3 christos + htab->glink->output_offset);
10481 1.3 christos
10482 1.3 christos for (page_addr = res0 & -pagesize;
10483 1.3 christos page_addr > glink_start;
10484 1.3 christos page_addr -= pagesize)
10485 1.3 christos {
10486 1.1 christos /* We have a plt call stub that may need fixing. */
10487 1.1 christos bfd_byte *loc;
10488 1.1 christos unsigned int insn;
10489 1.1 christos
10490 1.1 christos loc = htab->glink->contents + page_addr - 4 - glink_start;
10491 1.1 christos insn = bfd_get_32 (output_bfd, loc);
10492 1.1 christos if (insn == BCTR)
10493 1.3 christos {
10494 1.3 christos /* By alignment, we know that there must be at least
10495 1.3 christos one other call stub before this one. */
10496 1.3 christos insn = bfd_get_32 (output_bfd, loc - 16);
10497 1.3 christos if (insn == BCTR)
10498 1.1 christos bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10499 1.1 christos else
10500 1.1 christos bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10501 1.1 christos }
10502 1.1 christos }
10503 1.1 christos }
10504 1.1 christos
10505 1.1 christos /* Last comes the PLTresolve stub. */
10506 1.1 christos if (info->shared)
10507 1.1 christos {
10508 1.1 christos bfd_vma bcl;
10509 1.1 christos
10510 1.1 christos for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
10511 1.1 christos {
10512 1.1 christos unsigned int insn = pic_plt_resolve[i];
10513 1.1 christos
10514 1.1 christos if (htab->params->ppc476_workaround && insn == NOP)
10515 1.1 christos insn = BA + 0;
10516 1.1 christos bfd_put_32 (output_bfd, insn, p);
10517 1.1 christos p += 4;
10518 1.1 christos }
10519 1.1 christos p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10520 1.1 christos
10521 1.1 christos bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10522 1.1 christos + htab->glink->output_section->vma
10523 1.1 christos + htab->glink->output_offset);
10524 1.1 christos
10525 1.1 christos bfd_put_32 (output_bfd,
10526 1.1 christos ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10527 1.1 christos bfd_put_32 (output_bfd,
10528 1.1 christos ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10529 1.1 christos bfd_put_32 (output_bfd,
10530 1.1 christos ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10531 1.3 christos if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10532 1.3 christos {
10533 1.3 christos bfd_put_32 (output_bfd,
10534 1.3 christos LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10535 1.3 christos bfd_put_32 (output_bfd,
10536 1.1 christos LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10537 1.1 christos }
10538 1.1 christos else
10539 1.1 christos {
10540 1.1 christos bfd_put_32 (output_bfd,
10541 1.1 christos LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10542 1.1 christos bfd_put_32 (output_bfd,
10543 1.1 christos LWZ_12_12 + 4, p + 9*4);
10544 1.1 christos }
10545 1.1 christos }
10546 1.1 christos else
10547 1.1 christos {
10548 1.1 christos for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
10549 1.1 christos {
10550 1.1 christos unsigned int insn = plt_resolve[i];
10551 1.1 christos
10552 1.1 christos if (htab->params->ppc476_workaround && insn == NOP)
10553 1.1 christos insn = BA + 0;
10554 1.1 christos bfd_put_32 (output_bfd, insn, p);
10555 1.1 christos p += 4;
10556 1.1 christos }
10557 1.1 christos p -= 4 * ARRAY_SIZE (plt_resolve);
10558 1.1 christos
10559 1.1 christos bfd_put_32 (output_bfd,
10560 1.1 christos LIS_12 + PPC_HA (got + 4), p + 0*4);
10561 1.1 christos bfd_put_32 (output_bfd,
10562 1.1 christos ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10563 1.1 christos bfd_put_32 (output_bfd,
10564 1.1 christos ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10565 1.1 christos if (PPC_HA (got + 4) == PPC_HA (got + 8))
10566 1.1 christos {
10567 1.1 christos bfd_put_32 (output_bfd,
10568 1.1 christos LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10569 1.1 christos bfd_put_32 (output_bfd,
10570 1.1 christos LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10571 1.1 christos }
10572 1.1 christos else
10573 1.1 christos {
10574 1.1 christos bfd_put_32 (output_bfd,
10575 1.1 christos LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10576 1.1 christos bfd_put_32 (output_bfd,
10577 1.1 christos LWZ_12_12 + 4, p + 6*4);
10578 1.1 christos }
10579 1.1 christos }
10580 1.1 christos }
10581 1.1 christos
10582 1.1 christos if (htab->glink_eh_frame != NULL
10583 1.1 christos && htab->glink_eh_frame->contents != NULL)
10584 1.1 christos {
10585 1.1 christos unsigned char *p = htab->glink_eh_frame->contents;
10586 1.1 christos bfd_vma val;
10587 1.1 christos
10588 1.1 christos p += sizeof (glink_eh_frame_cie);
10589 1.1 christos /* FDE length. */
10590 1.1 christos p += 4;
10591 1.1 christos /* CIE pointer. */
10592 1.3 christos p += 4;
10593 1.1 christos /* Offset to .glink. */
10594 1.3 christos val = (htab->glink->output_section->vma
10595 1.1 christos + htab->glink->output_offset);
10596 1.1 christos val -= (htab->glink_eh_frame->output_section->vma
10597 1.1 christos + htab->glink_eh_frame->output_offset);
10598 1.1 christos val -= p - htab->glink_eh_frame->contents;
10599 1.1 christos bfd_put_32 (htab->elf.dynobj, val, p);
10600 1.1 christos
10601 1.3 christos if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10602 1.1 christos && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10603 1.1 christos htab->glink_eh_frame,
10604 1.3 christos htab->glink_eh_frame->contents))
10605 1.1 christos return FALSE;
10606 1.1 christos }
10607 1.1 christos
10608 1.1 christos return ret;
10609 1.1 christos }
10610 1.1 christos
10611 1.1 christos #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10613 1.1 christos #define TARGET_LITTLE_NAME "elf32-powerpcle"
10614 1.1 christos #define TARGET_BIG_SYM powerpc_elf32_vec
10615 1.1 christos #define TARGET_BIG_NAME "elf32-powerpc"
10616 1.1 christos #define ELF_ARCH bfd_arch_powerpc
10617 1.1 christos #define ELF_TARGET_ID PPC32_ELF_DATA
10618 1.1 christos #define ELF_MACHINE_CODE EM_PPC
10619 1.1 christos #ifdef __QNXTARGET__
10620 1.1 christos #define ELF_MAXPAGESIZE 0x1000
10621 1.3 christos #define ELF_COMMONPAGESIZE 0x1000
10622 1.1 christos #else
10623 1.1 christos #define ELF_MAXPAGESIZE 0x10000
10624 1.1 christos #define ELF_COMMONPAGESIZE 0x10000
10625 1.1 christos #endif
10626 1.1 christos #define ELF_MINPAGESIZE 0x1000
10627 1.1 christos #define elf_info_to_howto ppc_elf_info_to_howto
10628 1.1 christos
10629 1.1 christos #ifdef EM_CYGNUS_POWERPC
10630 1.1 christos #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10631 1.1 christos #endif
10632 1.1 christos
10633 1.1 christos #ifdef EM_PPC_OLD
10634 1.1 christos #define ELF_MACHINE_ALT2 EM_PPC_OLD
10635 1.1 christos #endif
10636 1.1 christos
10637 1.1 christos #define elf_backend_plt_not_loaded 1
10638 1.1 christos #define elf_backend_can_gc_sections 1
10639 1.1 christos #define elf_backend_can_refcount 1
10640 1.1 christos #define elf_backend_rela_normal 1
10641 1.1 christos #define elf_backend_caches_rawsize 1
10642 1.1 christos
10643 1.1 christos #define bfd_elf32_mkobject ppc_elf_mkobject
10644 1.1 christos #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10645 1.1 christos #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10646 1.1 christos #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10647 1.1 christos #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10648 1.1 christos #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10649 1.1 christos #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10650 1.1 christos #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10651 1.1 christos
10652 1.1 christos #define elf_backend_object_p ppc_elf_object_p
10653 1.1 christos #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10654 1.1 christos #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10655 1.1 christos #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10656 1.1 christos #define elf_backend_relocate_section ppc_elf_relocate_section
10657 1.1 christos #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10658 1.1 christos #define elf_backend_check_relocs ppc_elf_check_relocs
10659 1.1 christos #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10660 1.1 christos #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10661 1.1 christos #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10662 1.1 christos #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10663 1.1 christos #define elf_backend_hash_symbol ppc_elf_hash_symbol
10664 1.1 christos #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10665 1.1 christos #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10666 1.1 christos #define elf_backend_fake_sections ppc_elf_fake_sections
10667 1.1 christos #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10668 1.1 christos #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10669 1.1 christos #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10670 1.1 christos #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10671 1.3 christos #define elf_backend_write_core_note ppc_elf_write_core_note
10672 1.1 christos #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10673 1.1 christos #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10674 1.1 christos #define elf_backend_final_write_processing ppc_elf_final_write_processing
10675 1.1 christos #define elf_backend_write_section ppc_elf_write_section
10676 1.1 christos #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10677 1.1 christos #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10678 1.1 christos #define elf_backend_action_discarded ppc_elf_action_discarded
10679 1.1 christos #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10680 1.1 christos #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10681 1.1 christos #define elf_backend_section_processing ppc_elf_section_processing
10682 1.1 christos
10683 1.1 christos #include "elf32-target.h"
10684 1.1 christos
10685 1.1 christos /* FreeBSD Target */
10686 1.1 christos
10687 1.1 christos #undef TARGET_LITTLE_SYM
10688 1.1 christos #undef TARGET_LITTLE_NAME
10689 1.3 christos
10690 1.1 christos #undef TARGET_BIG_SYM
10691 1.1 christos #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10692 1.1 christos #undef TARGET_BIG_NAME
10693 1.1 christos #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10694 1.1 christos
10695 1.1 christos #undef ELF_OSABI
10696 1.1 christos #define ELF_OSABI ELFOSABI_FREEBSD
10697 1.1 christos
10698 1.1 christos #undef elf32_bed
10699 1.1 christos #define elf32_bed elf32_powerpc_fbsd_bed
10700 1.1 christos
10701 1.1 christos #include "elf32-target.h"
10702 1.1 christos
10703 1.1 christos /* VxWorks Target */
10704 1.1 christos
10705 1.1 christos #undef TARGET_LITTLE_SYM
10706 1.1 christos #undef TARGET_LITTLE_NAME
10707 1.1 christos
10708 1.1 christos #undef TARGET_BIG_SYM
10709 1.1 christos #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10710 1.1 christos #undef TARGET_BIG_NAME
10711 1.1 christos #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10712 1.1 christos
10713 1.1 christos #undef ELF_OSABI
10714 1.1 christos
10715 1.1 christos /* VxWorks uses the elf default section flags for .plt. */
10716 1.1 christos static const struct bfd_elf_special_section *
10717 1.1 christos ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
10718 1.1 christos {
10719 1.1 christos if (sec->name == NULL)
10720 1.1 christos return NULL;
10721 1.1 christos
10722 1.1 christos if (strcmp (sec->name, ".plt") == 0)
10723 1.1 christos return _bfd_elf_get_sec_type_attr (abfd, sec);
10724 1.1 christos
10725 1.1 christos return ppc_elf_get_sec_type_attr (abfd, sec);
10726 1.1 christos }
10727 1.1 christos
10728 1.1 christos /* Like ppc_elf_link_hash_table_create, but overrides
10729 1.1 christos appropriately for VxWorks. */
10730 1.1 christos static struct bfd_link_hash_table *
10731 1.1 christos ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10732 1.1 christos {
10733 1.1 christos struct bfd_link_hash_table *ret;
10734 1.1 christos
10735 1.1 christos ret = ppc_elf_link_hash_table_create (abfd);
10736 1.1 christos if (ret)
10737 1.1 christos {
10738 1.1 christos struct ppc_elf_link_hash_table *htab
10739 1.1 christos = (struct ppc_elf_link_hash_table *)ret;
10740 1.1 christos htab->is_vxworks = 1;
10741 1.1 christos htab->plt_type = PLT_VXWORKS;
10742 1.1 christos htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10743 1.1 christos htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10744 1.1 christos htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10745 1.1 christos }
10746 1.1 christos return ret;
10747 1.1 christos }
10748 1.1 christos
10749 1.1 christos /* Tweak magic VxWorks symbols as they are loaded. */
10750 1.1 christos static bfd_boolean
10751 1.1 christos ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10752 1.1 christos struct bfd_link_info *info,
10753 1.1 christos Elf_Internal_Sym *sym,
10754 1.1 christos const char **namep ATTRIBUTE_UNUSED,
10755 1.1 christos flagword *flagsp ATTRIBUTE_UNUSED,
10756 1.1 christos asection **secp,
10757 1.1 christos bfd_vma *valp)
10758 1.1 christos {
10759 1.1 christos if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
10760 1.1 christos valp))
10761 1.1 christos return FALSE;
10762 1.1 christos
10763 1.1 christos return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
10764 1.1 christos }
10765 1.1 christos
10766 1.1 christos static void
10767 1.1 christos ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10768 1.1 christos {
10769 1.1 christos ppc_elf_final_write_processing(abfd, linker);
10770 1.1 christos elf_vxworks_final_write_processing(abfd, linker);
10771 1.1 christos }
10772 1.1 christos
10773 1.1 christos /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10774 1.1 christos define it. */
10775 1.1 christos #undef elf_backend_want_plt_sym
10776 1.1 christos #define elf_backend_want_plt_sym 1
10777 1.1 christos #undef elf_backend_want_got_plt
10778 1.1 christos #define elf_backend_want_got_plt 1
10779 1.1 christos #undef elf_backend_got_symbol_offset
10780 1.1 christos #define elf_backend_got_symbol_offset 0
10781 1.1 christos #undef elf_backend_plt_not_loaded
10782 1.1 christos #define elf_backend_plt_not_loaded 0
10783 1.1 christos #undef elf_backend_plt_readonly
10784 1.1 christos #define elf_backend_plt_readonly 1
10785 1.1 christos #undef elf_backend_got_header_size
10786 1.1 christos #define elf_backend_got_header_size 12
10787 1.1 christos
10788 1.1 christos #undef bfd_elf32_get_synthetic_symtab
10789 1.1 christos
10790 1.1 christos #undef bfd_elf32_bfd_link_hash_table_create
10791 1.1 christos #define bfd_elf32_bfd_link_hash_table_create \
10792 1.1 christos ppc_elf_vxworks_link_hash_table_create
10793 1.1 christos #undef elf_backend_add_symbol_hook
10794 #define elf_backend_add_symbol_hook \
10795 ppc_elf_vxworks_add_symbol_hook
10796 #undef elf_backend_link_output_symbol_hook
10797 #define elf_backend_link_output_symbol_hook \
10798 elf_vxworks_link_output_symbol_hook
10799 #undef elf_backend_final_write_processing
10800 #define elf_backend_final_write_processing \
10801 ppc_elf_vxworks_final_write_processing
10802 #undef elf_backend_get_sec_type_attr
10803 #define elf_backend_get_sec_type_attr \
10804 ppc_elf_vxworks_get_sec_type_attr
10805 #undef elf_backend_emit_relocs
10806 #define elf_backend_emit_relocs \
10807 elf_vxworks_emit_relocs
10808
10809 #undef elf32_bed
10810 #define elf32_bed ppc_elf_vxworks_bed
10811 #undef elf_backend_post_process_headers
10812
10813 #include "elf32-target.h"
10814