elf32-ppc.c revision 1.1.1.1 1 1.1 christos /* PowerPC-specific support for 32-bit ELF
2 1.1 christos Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 1.1 christos 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
4 1.1 christos Free Software Foundation, Inc.
5 1.1 christos Written by Ian Lance Taylor, Cygnus Support.
6 1.1 christos
7 1.1 christos This file is part of BFD, the Binary File Descriptor library.
8 1.1 christos
9 1.1 christos This program is free software; you can redistribute it and/or modify
10 1.1 christos it under the terms of the GNU General Public License as published by
11 1.1 christos the Free Software Foundation; either version 3 of the License, or
12 1.1 christos (at your option) any later version.
13 1.1 christos
14 1.1 christos This program is distributed in the hope that it will be useful,
15 1.1 christos but WITHOUT ANY WARRANTY; without even the implied warranty of
16 1.1 christos MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 1.1 christos GNU General Public License for more details.
18 1.1 christos
19 1.1 christos You should have received a copy of the GNU General Public License
20 1.1 christos along with this program; if not, write to the
21 1.1 christos Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
22 1.1 christos Boston, MA 02110-1301, USA. */
23 1.1 christos
24 1.1 christos
25 1.1 christos /* This file is based on a preliminary PowerPC ELF ABI. The
26 1.1 christos information may not match the final PowerPC ELF ABI. It includes
27 1.1 christos suggestions from the in-progress Embedded PowerPC ABI, and that
28 1.1 christos information may also not match. */
29 1.1 christos
30 1.1 christos #include "sysdep.h"
31 1.1 christos #include <stdarg.h>
32 1.1 christos #include "bfd.h"
33 1.1 christos #include "bfdlink.h"
34 1.1 christos #include "libbfd.h"
35 1.1 christos #include "elf-bfd.h"
36 1.1 christos #include "elf/ppc.h"
37 1.1 christos #include "elf32-ppc.h"
38 1.1 christos #include "elf-vxworks.h"
39 1.1 christos #include "dwarf2.h"
40 1.1 christos #include "elf-linux-psinfo.h"
41 1.1 christos
42 1.1 christos typedef enum split16_format_type
43 1.1 christos {
44 1.1 christos split16a_type = 0,
45 1.1 christos split16d_type
46 1.1 christos }
47 1.1 christos split16_format_type;
48 1.1 christos
49 1.1 christos /* RELA relocations are used here. */
50 1.1 christos
51 1.1 christos static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
52 1.1 christos (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
53 1.1 christos static bfd_reloc_status_type ppc_elf_unhandled_reloc
54 1.1 christos (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
55 1.1 christos static void ppc_elf_vle_split16
56 1.1 christos (bfd *, bfd_byte *, bfd_vma, bfd_vma, split16_format_type);
57 1.1 christos
58 1.1 christos /* Branch prediction bit for branch taken relocs. */
59 1.1 christos #define BRANCH_PREDICT_BIT 0x200000
60 1.1 christos /* Mask to set RA in memory instructions. */
61 1.1 christos #define RA_REGISTER_MASK 0x001f0000
62 1.1 christos /* Value to shift register by to insert RA. */
63 1.1 christos #define RA_REGISTER_SHIFT 16
64 1.1 christos
65 1.1 christos /* The name of the dynamic interpreter. This is put in the .interp
66 1.1 christos section. */
67 1.1 christos #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
68 1.1 christos
69 1.1 christos /* For old-style PLT. */
70 1.1 christos /* The number of single-slot PLT entries (the rest use two slots). */
71 1.1 christos #define PLT_NUM_SINGLE_ENTRIES 8192
72 1.1 christos
73 1.1 christos /* For new-style .glink and .plt. */
74 1.1 christos #define GLINK_PLTRESOLVE 16*4
75 1.1 christos #define GLINK_ENTRY_SIZE 4*4
76 1.1 christos #define TLS_GET_ADDR_GLINK_SIZE 12*4
77 1.1 christos
78 1.1 christos /* VxWorks uses its own plt layout, filled in by the static linker. */
79 1.1 christos
80 1.1 christos /* The standard VxWorks PLT entry. */
81 1.1 christos #define VXWORKS_PLT_ENTRY_SIZE 32
82 1.1 christos static const bfd_vma ppc_elf_vxworks_plt_entry
83 1.1 christos [VXWORKS_PLT_ENTRY_SIZE / 4] =
84 1.1 christos {
85 1.1 christos 0x3d800000, /* lis r12,0 */
86 1.1 christos 0x818c0000, /* lwz r12,0(r12) */
87 1.1 christos 0x7d8903a6, /* mtctr r12 */
88 1.1 christos 0x4e800420, /* bctr */
89 1.1 christos 0x39600000, /* li r11,0 */
90 1.1 christos 0x48000000, /* b 14 <.PLT0resolve+0x4> */
91 1.1 christos 0x60000000, /* nop */
92 1.1 christos 0x60000000, /* nop */
93 1.1 christos };
94 1.1 christos static const bfd_vma ppc_elf_vxworks_pic_plt_entry
95 1.1 christos [VXWORKS_PLT_ENTRY_SIZE / 4] =
96 1.1 christos {
97 1.1 christos 0x3d9e0000, /* addis r12,r30,0 */
98 1.1 christos 0x818c0000, /* lwz r12,0(r12) */
99 1.1 christos 0x7d8903a6, /* mtctr r12 */
100 1.1 christos 0x4e800420, /* bctr */
101 1.1 christos 0x39600000, /* li r11,0 */
102 1.1 christos 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
103 1.1 christos 0x60000000, /* nop */
104 1.1 christos 0x60000000, /* nop */
105 1.1 christos };
106 1.1 christos
107 1.1 christos /* The initial VxWorks PLT entry. */
108 1.1 christos #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
109 1.1 christos static const bfd_vma ppc_elf_vxworks_plt0_entry
110 1.1 christos [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
111 1.1 christos {
112 1.1 christos 0x3d800000, /* lis r12,0 */
113 1.1 christos 0x398c0000, /* addi r12,r12,0 */
114 1.1 christos 0x800c0008, /* lwz r0,8(r12) */
115 1.1 christos 0x7c0903a6, /* mtctr r0 */
116 1.1 christos 0x818c0004, /* lwz r12,4(r12) */
117 1.1 christos 0x4e800420, /* bctr */
118 1.1 christos 0x60000000, /* nop */
119 1.1 christos 0x60000000, /* nop */
120 1.1 christos };
121 1.1 christos static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
122 1.1 christos [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
123 1.1 christos {
124 1.1 christos 0x819e0008, /* lwz r12,8(r30) */
125 1.1 christos 0x7d8903a6, /* mtctr r12 */
126 1.1 christos 0x819e0004, /* lwz r12,4(r30) */
127 1.1 christos 0x4e800420, /* bctr */
128 1.1 christos 0x60000000, /* nop */
129 1.1 christos 0x60000000, /* nop */
130 1.1 christos 0x60000000, /* nop */
131 1.1 christos 0x60000000, /* nop */
132 1.1 christos };
133 1.1 christos
134 1.1 christos /* For executables, we have some additional relocations in
135 1.1 christos .rela.plt.unloaded, for the kernel loader. */
136 1.1 christos
137 1.1 christos /* The number of non-JMP_SLOT relocations per PLT0 slot. */
138 1.1 christos #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
139 1.1 christos /* The number of relocations in the PLTResolve slot. */
140 1.1 christos #define VXWORKS_PLTRESOLVE_RELOCS 2
141 1.1 christos /* The number of relocations in the PLTResolve slot when when creating
142 1.1 christos a shared library. */
143 1.1 christos #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
144 1.1 christos
145 1.1 christos /* Some instructions. */
146 1.1 christos #define ADDIS_11_11 0x3d6b0000
147 1.1 christos #define ADDIS_11_30 0x3d7e0000
148 1.1 christos #define ADDIS_12_12 0x3d8c0000
149 1.1 christos #define ADDI_11_11 0x396b0000
150 1.1 christos #define ADD_0_11_11 0x7c0b5a14
151 1.1 christos #define ADD_3_12_2 0x7c6c1214
152 1.1 christos #define ADD_11_0_11 0x7d605a14
153 1.1 christos #define B 0x48000000
154 1.1 christos #define BCL_20_31 0x429f0005
155 1.1 christos #define BCTR 0x4e800420
156 1.1 christos #define BEQLR 0x4d820020
157 1.1 christos #define CMPWI_11_0 0x2c0b0000
158 1.1 christos #define LIS_11 0x3d600000
159 1.1 christos #define LIS_12 0x3d800000
160 1.1 christos #define LWZU_0_12 0x840c0000
161 1.1 christos #define LWZ_0_12 0x800c0000
162 1.1 christos #define LWZ_11_3 0x81630000
163 1.1 christos #define LWZ_11_11 0x816b0000
164 1.1 christos #define LWZ_11_30 0x817e0000
165 1.1 christos #define LWZ_12_3 0x81830000
166 1.1 christos #define LWZ_12_12 0x818c0000
167 1.1 christos #define MR_0_3 0x7c601b78
168 1.1 christos #define MR_3_0 0x7c030378
169 1.1 christos #define MFLR_0 0x7c0802a6
170 1.1 christos #define MFLR_12 0x7d8802a6
171 1.1 christos #define MTCTR_0 0x7c0903a6
172 1.1 christos #define MTCTR_11 0x7d6903a6
173 1.1 christos #define MTLR_0 0x7c0803a6
174 1.1 christos #define NOP 0x60000000
175 1.1 christos #define SUB_11_11_12 0x7d6c5850
176 1.1 christos
177 1.1 christos /* Offset of tp and dtp pointers from start of TLS block. */
178 1.1 christos #define TP_OFFSET 0x7000
179 1.1 christos #define DTP_OFFSET 0x8000
180 1.1 christos
181 1.1 christos /* The value of a defined global symbol. */
182 1.1 christos #define SYM_VAL(SYM) \
183 1.1 christos ((SYM)->root.u.def.section->output_section->vma \
184 1.1 christos + (SYM)->root.u.def.section->output_offset \
185 1.1 christos + (SYM)->root.u.def.value)
186 1.1 christos
187 1.1 christos static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
189 1.1 christos
190 1.1 christos static reloc_howto_type ppc_elf_howto_raw[] = {
191 1.1 christos /* This reloc does nothing. */
192 1.1 christos HOWTO (R_PPC_NONE, /* type */
193 1.1 christos 0, /* rightshift */
194 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
195 1.1 christos 32, /* bitsize */
196 1.1 christos FALSE, /* pc_relative */
197 1.1 christos 0, /* bitpos */
198 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
199 1.1 christos bfd_elf_generic_reloc, /* special_function */
200 1.1 christos "R_PPC_NONE", /* name */
201 1.1 christos FALSE, /* partial_inplace */
202 1.1 christos 0, /* src_mask */
203 1.1 christos 0, /* dst_mask */
204 1.1 christos FALSE), /* pcrel_offset */
205 1.1 christos
206 1.1 christos /* A standard 32 bit relocation. */
207 1.1 christos HOWTO (R_PPC_ADDR32, /* type */
208 1.1 christos 0, /* rightshift */
209 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
210 1.1 christos 32, /* bitsize */
211 1.1 christos FALSE, /* pc_relative */
212 1.1 christos 0, /* bitpos */
213 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
214 1.1 christos bfd_elf_generic_reloc, /* special_function */
215 1.1 christos "R_PPC_ADDR32", /* name */
216 1.1 christos FALSE, /* partial_inplace */
217 1.1 christos 0, /* src_mask */
218 1.1 christos 0xffffffff, /* dst_mask */
219 1.1 christos FALSE), /* pcrel_offset */
220 1.1 christos
221 1.1 christos /* An absolute 26 bit branch; the lower two bits must be zero.
222 1.1 christos FIXME: we don't check that, we just clear them. */
223 1.1 christos HOWTO (R_PPC_ADDR24, /* type */
224 1.1 christos 0, /* rightshift */
225 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
226 1.1 christos 26, /* bitsize */
227 1.1 christos FALSE, /* pc_relative */
228 1.1 christos 0, /* bitpos */
229 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
230 1.1 christos bfd_elf_generic_reloc, /* special_function */
231 1.1 christos "R_PPC_ADDR24", /* name */
232 1.1 christos FALSE, /* partial_inplace */
233 1.1 christos 0, /* src_mask */
234 1.1 christos 0x3fffffc, /* dst_mask */
235 1.1 christos FALSE), /* pcrel_offset */
236 1.1 christos
237 1.1 christos /* A standard 16 bit relocation. */
238 1.1 christos HOWTO (R_PPC_ADDR16, /* type */
239 1.1 christos 0, /* rightshift */
240 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
241 1.1 christos 16, /* bitsize */
242 1.1 christos FALSE, /* pc_relative */
243 1.1 christos 0, /* bitpos */
244 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
245 1.1 christos bfd_elf_generic_reloc, /* special_function */
246 1.1 christos "R_PPC_ADDR16", /* name */
247 1.1 christos FALSE, /* partial_inplace */
248 1.1 christos 0, /* src_mask */
249 1.1 christos 0xffff, /* dst_mask */
250 1.1 christos FALSE), /* pcrel_offset */
251 1.1 christos
252 1.1 christos /* A 16 bit relocation without overflow. */
253 1.1 christos HOWTO (R_PPC_ADDR16_LO, /* type */
254 1.1 christos 0, /* rightshift */
255 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
256 1.1 christos 16, /* bitsize */
257 1.1 christos FALSE, /* pc_relative */
258 1.1 christos 0, /* bitpos */
259 1.1 christos complain_overflow_dont,/* complain_on_overflow */
260 1.1 christos bfd_elf_generic_reloc, /* special_function */
261 1.1 christos "R_PPC_ADDR16_LO", /* name */
262 1.1 christos FALSE, /* partial_inplace */
263 1.1 christos 0, /* src_mask */
264 1.1 christos 0xffff, /* dst_mask */
265 1.1 christos FALSE), /* pcrel_offset */
266 1.1 christos
267 1.1 christos /* The high order 16 bits of an address. */
268 1.1 christos HOWTO (R_PPC_ADDR16_HI, /* type */
269 1.1 christos 16, /* rightshift */
270 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
271 1.1 christos 16, /* bitsize */
272 1.1 christos FALSE, /* pc_relative */
273 1.1 christos 0, /* bitpos */
274 1.1 christos complain_overflow_dont, /* complain_on_overflow */
275 1.1 christos bfd_elf_generic_reloc, /* special_function */
276 1.1 christos "R_PPC_ADDR16_HI", /* name */
277 1.1 christos FALSE, /* partial_inplace */
278 1.1 christos 0, /* src_mask */
279 1.1 christos 0xffff, /* dst_mask */
280 1.1 christos FALSE), /* pcrel_offset */
281 1.1 christos
282 1.1 christos /* The high order 16 bits of an address, plus 1 if the contents of
283 1.1 christos the low 16 bits, treated as a signed number, is negative. */
284 1.1 christos HOWTO (R_PPC_ADDR16_HA, /* type */
285 1.1 christos 16, /* rightshift */
286 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
287 1.1 christos 16, /* bitsize */
288 1.1 christos FALSE, /* pc_relative */
289 1.1 christos 0, /* bitpos */
290 1.1 christos complain_overflow_dont, /* complain_on_overflow */
291 1.1 christos ppc_elf_addr16_ha_reloc, /* special_function */
292 1.1 christos "R_PPC_ADDR16_HA", /* name */
293 1.1 christos FALSE, /* partial_inplace */
294 1.1 christos 0, /* src_mask */
295 1.1 christos 0xffff, /* dst_mask */
296 1.1 christos FALSE), /* pcrel_offset */
297 1.1 christos
298 1.1 christos /* An absolute 16 bit branch; the lower two bits must be zero.
299 1.1 christos FIXME: we don't check that, we just clear them. */
300 1.1 christos HOWTO (R_PPC_ADDR14, /* type */
301 1.1 christos 0, /* rightshift */
302 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
303 1.1 christos 16, /* bitsize */
304 1.1 christos FALSE, /* pc_relative */
305 1.1 christos 0, /* bitpos */
306 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
307 1.1 christos bfd_elf_generic_reloc, /* special_function */
308 1.1 christos "R_PPC_ADDR14", /* name */
309 1.1 christos FALSE, /* partial_inplace */
310 1.1 christos 0, /* src_mask */
311 1.1 christos 0xfffc, /* dst_mask */
312 1.1 christos FALSE), /* pcrel_offset */
313 1.1 christos
314 1.1 christos /* An absolute 16 bit branch, for which bit 10 should be set to
315 1.1 christos indicate that the branch is expected to be taken. The lower two
316 1.1 christos bits must be zero. */
317 1.1 christos HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
318 1.1 christos 0, /* rightshift */
319 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
320 1.1 christos 16, /* bitsize */
321 1.1 christos FALSE, /* pc_relative */
322 1.1 christos 0, /* bitpos */
323 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
324 1.1 christos bfd_elf_generic_reloc, /* special_function */
325 1.1 christos "R_PPC_ADDR14_BRTAKEN",/* name */
326 1.1 christos FALSE, /* partial_inplace */
327 1.1 christos 0, /* src_mask */
328 1.1 christos 0xfffc, /* dst_mask */
329 1.1 christos FALSE), /* pcrel_offset */
330 1.1 christos
331 1.1 christos /* An absolute 16 bit branch, for which bit 10 should be set to
332 1.1 christos indicate that the branch is not expected to be taken. The lower
333 1.1 christos two bits must be zero. */
334 1.1 christos HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
335 1.1 christos 0, /* rightshift */
336 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
337 1.1 christos 16, /* bitsize */
338 1.1 christos FALSE, /* pc_relative */
339 1.1 christos 0, /* bitpos */
340 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
341 1.1 christos bfd_elf_generic_reloc, /* special_function */
342 1.1 christos "R_PPC_ADDR14_BRNTAKEN",/* name */
343 1.1 christos FALSE, /* partial_inplace */
344 1.1 christos 0, /* src_mask */
345 1.1 christos 0xfffc, /* dst_mask */
346 1.1 christos FALSE), /* pcrel_offset */
347 1.1 christos
348 1.1 christos /* A relative 26 bit branch; the lower two bits must be zero. */
349 1.1 christos HOWTO (R_PPC_REL24, /* type */
350 1.1 christos 0, /* rightshift */
351 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
352 1.1 christos 26, /* bitsize */
353 1.1 christos TRUE, /* pc_relative */
354 1.1 christos 0, /* bitpos */
355 1.1 christos complain_overflow_signed, /* complain_on_overflow */
356 1.1 christos bfd_elf_generic_reloc, /* special_function */
357 1.1 christos "R_PPC_REL24", /* name */
358 1.1 christos FALSE, /* partial_inplace */
359 1.1 christos 0, /* src_mask */
360 1.1 christos 0x3fffffc, /* dst_mask */
361 1.1 christos TRUE), /* pcrel_offset */
362 1.1 christos
363 1.1 christos /* A relative 16 bit branch; the lower two bits must be zero. */
364 1.1 christos HOWTO (R_PPC_REL14, /* type */
365 1.1 christos 0, /* rightshift */
366 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
367 1.1 christos 16, /* bitsize */
368 1.1 christos TRUE, /* pc_relative */
369 1.1 christos 0, /* bitpos */
370 1.1 christos complain_overflow_signed, /* complain_on_overflow */
371 1.1 christos bfd_elf_generic_reloc, /* special_function */
372 1.1 christos "R_PPC_REL14", /* name */
373 1.1 christos FALSE, /* partial_inplace */
374 1.1 christos 0, /* src_mask */
375 1.1 christos 0xfffc, /* dst_mask */
376 1.1 christos TRUE), /* pcrel_offset */
377 1.1 christos
378 1.1 christos /* A relative 16 bit branch. Bit 10 should be set to indicate that
379 1.1 christos the branch is expected to be taken. The lower two bits must be
380 1.1 christos zero. */
381 1.1 christos HOWTO (R_PPC_REL14_BRTAKEN, /* type */
382 1.1 christos 0, /* rightshift */
383 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
384 1.1 christos 16, /* bitsize */
385 1.1 christos TRUE, /* pc_relative */
386 1.1 christos 0, /* bitpos */
387 1.1 christos complain_overflow_signed, /* complain_on_overflow */
388 1.1 christos bfd_elf_generic_reloc, /* special_function */
389 1.1 christos "R_PPC_REL14_BRTAKEN", /* name */
390 1.1 christos FALSE, /* partial_inplace */
391 1.1 christos 0, /* src_mask */
392 1.1 christos 0xfffc, /* dst_mask */
393 1.1 christos TRUE), /* pcrel_offset */
394 1.1 christos
395 1.1 christos /* A relative 16 bit branch. Bit 10 should be set to indicate that
396 1.1 christos the branch is not expected to be taken. The lower two bits must
397 1.1 christos be zero. */
398 1.1 christos HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
399 1.1 christos 0, /* rightshift */
400 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
401 1.1 christos 16, /* bitsize */
402 1.1 christos TRUE, /* pc_relative */
403 1.1 christos 0, /* bitpos */
404 1.1 christos complain_overflow_signed, /* complain_on_overflow */
405 1.1 christos bfd_elf_generic_reloc, /* special_function */
406 1.1 christos "R_PPC_REL14_BRNTAKEN",/* name */
407 1.1 christos FALSE, /* partial_inplace */
408 1.1 christos 0, /* src_mask */
409 1.1 christos 0xfffc, /* dst_mask */
410 1.1 christos TRUE), /* pcrel_offset */
411 1.1 christos
412 1.1 christos /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
413 1.1 christos symbol. */
414 1.1 christos HOWTO (R_PPC_GOT16, /* type */
415 1.1 christos 0, /* rightshift */
416 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
417 1.1 christos 16, /* bitsize */
418 1.1 christos FALSE, /* pc_relative */
419 1.1 christos 0, /* bitpos */
420 1.1 christos complain_overflow_signed, /* complain_on_overflow */
421 1.1 christos bfd_elf_generic_reloc, /* special_function */
422 1.1 christos "R_PPC_GOT16", /* name */
423 1.1 christos FALSE, /* partial_inplace */
424 1.1 christos 0, /* src_mask */
425 1.1 christos 0xffff, /* dst_mask */
426 1.1 christos FALSE), /* pcrel_offset */
427 1.1 christos
428 1.1 christos /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
429 1.1 christos the symbol. */
430 1.1 christos HOWTO (R_PPC_GOT16_LO, /* type */
431 1.1 christos 0, /* rightshift */
432 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
433 1.1 christos 16, /* bitsize */
434 1.1 christos FALSE, /* pc_relative */
435 1.1 christos 0, /* bitpos */
436 1.1 christos complain_overflow_dont, /* complain_on_overflow */
437 1.1 christos bfd_elf_generic_reloc, /* special_function */
438 1.1 christos "R_PPC_GOT16_LO", /* name */
439 1.1 christos FALSE, /* partial_inplace */
440 1.1 christos 0, /* src_mask */
441 1.1 christos 0xffff, /* dst_mask */
442 1.1 christos FALSE), /* pcrel_offset */
443 1.1 christos
444 1.1 christos /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
445 1.1 christos the symbol. */
446 1.1 christos HOWTO (R_PPC_GOT16_HI, /* type */
447 1.1 christos 16, /* rightshift */
448 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
449 1.1 christos 16, /* bitsize */
450 1.1 christos FALSE, /* pc_relative */
451 1.1 christos 0, /* bitpos */
452 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
453 1.1 christos bfd_elf_generic_reloc, /* special_function */
454 1.1 christos "R_PPC_GOT16_HI", /* name */
455 1.1 christos FALSE, /* partial_inplace */
456 1.1 christos 0, /* src_mask */
457 1.1 christos 0xffff, /* dst_mask */
458 1.1 christos FALSE), /* pcrel_offset */
459 1.1 christos
460 1.1 christos /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
461 1.1 christos the symbol. */
462 1.1 christos HOWTO (R_PPC_GOT16_HA, /* type */
463 1.1 christos 16, /* rightshift */
464 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
465 1.1 christos 16, /* bitsize */
466 1.1 christos FALSE, /* pc_relative */
467 1.1 christos 0, /* bitpos */
468 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
469 1.1 christos ppc_elf_addr16_ha_reloc, /* special_function */
470 1.1 christos "R_PPC_GOT16_HA", /* name */
471 1.1 christos FALSE, /* partial_inplace */
472 1.1 christos 0, /* src_mask */
473 1.1 christos 0xffff, /* dst_mask */
474 1.1 christos FALSE), /* pcrel_offset */
475 1.1 christos
476 1.1 christos /* Like R_PPC_REL24, but referring to the procedure linkage table
477 1.1 christos entry for the symbol. */
478 1.1 christos HOWTO (R_PPC_PLTREL24, /* type */
479 1.1 christos 0, /* rightshift */
480 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
481 1.1 christos 26, /* bitsize */
482 1.1 christos TRUE, /* pc_relative */
483 1.1 christos 0, /* bitpos */
484 1.1 christos complain_overflow_signed, /* complain_on_overflow */
485 1.1 christos bfd_elf_generic_reloc, /* special_function */
486 1.1 christos "R_PPC_PLTREL24", /* name */
487 1.1 christos FALSE, /* partial_inplace */
488 1.1 christos 0, /* src_mask */
489 1.1 christos 0x3fffffc, /* dst_mask */
490 1.1 christos TRUE), /* pcrel_offset */
491 1.1 christos
492 1.1 christos /* This is used only by the dynamic linker. The symbol should exist
493 1.1 christos both in the object being run and in some shared library. The
494 1.1 christos dynamic linker copies the data addressed by the symbol from the
495 1.1 christos shared library into the object, because the object being
496 1.1 christos run has to have the data at some particular address. */
497 1.1 christos HOWTO (R_PPC_COPY, /* type */
498 1.1 christos 0, /* rightshift */
499 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
500 1.1 christos 32, /* bitsize */
501 1.1 christos FALSE, /* pc_relative */
502 1.1 christos 0, /* bitpos */
503 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
504 1.1 christos bfd_elf_generic_reloc, /* special_function */
505 1.1 christos "R_PPC_COPY", /* name */
506 1.1 christos FALSE, /* partial_inplace */
507 1.1 christos 0, /* src_mask */
508 1.1 christos 0, /* dst_mask */
509 1.1 christos FALSE), /* pcrel_offset */
510 1.1 christos
511 1.1 christos /* Like R_PPC_ADDR32, but used when setting global offset table
512 1.1 christos entries. */
513 1.1 christos HOWTO (R_PPC_GLOB_DAT, /* type */
514 1.1 christos 0, /* rightshift */
515 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
516 1.1 christos 32, /* bitsize */
517 1.1 christos FALSE, /* pc_relative */
518 1.1 christos 0, /* bitpos */
519 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
520 1.1 christos bfd_elf_generic_reloc, /* special_function */
521 1.1 christos "R_PPC_GLOB_DAT", /* name */
522 1.1 christos FALSE, /* partial_inplace */
523 1.1 christos 0, /* src_mask */
524 1.1 christos 0xffffffff, /* dst_mask */
525 1.1 christos FALSE), /* pcrel_offset */
526 1.1 christos
527 1.1 christos /* Marks a procedure linkage table entry for a symbol. */
528 1.1 christos HOWTO (R_PPC_JMP_SLOT, /* type */
529 1.1 christos 0, /* rightshift */
530 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
531 1.1 christos 32, /* bitsize */
532 1.1 christos FALSE, /* pc_relative */
533 1.1 christos 0, /* bitpos */
534 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
535 1.1 christos bfd_elf_generic_reloc, /* special_function */
536 1.1 christos "R_PPC_JMP_SLOT", /* name */
537 1.1 christos FALSE, /* partial_inplace */
538 1.1 christos 0, /* src_mask */
539 1.1 christos 0, /* dst_mask */
540 1.1 christos FALSE), /* pcrel_offset */
541 1.1 christos
542 1.1 christos /* Used only by the dynamic linker. When the object is run, this
543 1.1 christos longword is set to the load address of the object, plus the
544 1.1 christos addend. */
545 1.1 christos HOWTO (R_PPC_RELATIVE, /* type */
546 1.1 christos 0, /* rightshift */
547 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
548 1.1 christos 32, /* bitsize */
549 1.1 christos FALSE, /* pc_relative */
550 1.1 christos 0, /* bitpos */
551 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
552 1.1 christos bfd_elf_generic_reloc, /* special_function */
553 1.1 christos "R_PPC_RELATIVE", /* name */
554 1.1 christos FALSE, /* partial_inplace */
555 1.1 christos 0, /* src_mask */
556 1.1 christos 0xffffffff, /* dst_mask */
557 1.1 christos FALSE), /* pcrel_offset */
558 1.1 christos
559 1.1 christos /* Like R_PPC_REL24, but uses the value of the symbol within the
560 1.1 christos object rather than the final value. Normally used for
561 1.1 christos _GLOBAL_OFFSET_TABLE_. */
562 1.1 christos HOWTO (R_PPC_LOCAL24PC, /* type */
563 1.1 christos 0, /* rightshift */
564 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
565 1.1 christos 26, /* bitsize */
566 1.1 christos TRUE, /* pc_relative */
567 1.1 christos 0, /* bitpos */
568 1.1 christos complain_overflow_signed, /* complain_on_overflow */
569 1.1 christos bfd_elf_generic_reloc, /* special_function */
570 1.1 christos "R_PPC_LOCAL24PC", /* name */
571 1.1 christos FALSE, /* partial_inplace */
572 1.1 christos 0, /* src_mask */
573 1.1 christos 0x3fffffc, /* dst_mask */
574 1.1 christos TRUE), /* pcrel_offset */
575 1.1 christos
576 1.1 christos /* Like R_PPC_ADDR32, but may be unaligned. */
577 1.1 christos HOWTO (R_PPC_UADDR32, /* type */
578 1.1 christos 0, /* rightshift */
579 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
580 1.1 christos 32, /* bitsize */
581 1.1 christos FALSE, /* pc_relative */
582 1.1 christos 0, /* bitpos */
583 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
584 1.1 christos bfd_elf_generic_reloc, /* special_function */
585 1.1 christos "R_PPC_UADDR32", /* name */
586 1.1 christos FALSE, /* partial_inplace */
587 1.1 christos 0, /* src_mask */
588 1.1 christos 0xffffffff, /* dst_mask */
589 1.1 christos FALSE), /* pcrel_offset */
590 1.1 christos
591 1.1 christos /* Like R_PPC_ADDR16, but may be unaligned. */
592 1.1 christos HOWTO (R_PPC_UADDR16, /* type */
593 1.1 christos 0, /* rightshift */
594 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
595 1.1 christos 16, /* bitsize */
596 1.1 christos FALSE, /* pc_relative */
597 1.1 christos 0, /* bitpos */
598 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
599 1.1 christos bfd_elf_generic_reloc, /* special_function */
600 1.1 christos "R_PPC_UADDR16", /* name */
601 1.1 christos FALSE, /* partial_inplace */
602 1.1 christos 0, /* src_mask */
603 1.1 christos 0xffff, /* dst_mask */
604 1.1 christos FALSE), /* pcrel_offset */
605 1.1 christos
606 1.1 christos /* 32-bit PC relative */
607 1.1 christos HOWTO (R_PPC_REL32, /* type */
608 1.1 christos 0, /* rightshift */
609 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
610 1.1 christos 32, /* bitsize */
611 1.1 christos TRUE, /* pc_relative */
612 1.1 christos 0, /* bitpos */
613 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
614 1.1 christos bfd_elf_generic_reloc, /* special_function */
615 1.1 christos "R_PPC_REL32", /* name */
616 1.1 christos FALSE, /* partial_inplace */
617 1.1 christos 0, /* src_mask */
618 1.1 christos 0xffffffff, /* dst_mask */
619 1.1 christos TRUE), /* pcrel_offset */
620 1.1 christos
621 1.1 christos /* 32-bit relocation to the symbol's procedure linkage table.
622 1.1 christos FIXME: not supported. */
623 1.1 christos HOWTO (R_PPC_PLT32, /* type */
624 1.1 christos 0, /* rightshift */
625 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
626 1.1 christos 32, /* bitsize */
627 1.1 christos FALSE, /* pc_relative */
628 1.1 christos 0, /* bitpos */
629 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
630 1.1 christos bfd_elf_generic_reloc, /* special_function */
631 1.1 christos "R_PPC_PLT32", /* name */
632 1.1 christos FALSE, /* partial_inplace */
633 1.1 christos 0, /* src_mask */
634 1.1 christos 0, /* dst_mask */
635 1.1 christos FALSE), /* pcrel_offset */
636 1.1 christos
637 1.1 christos /* 32-bit PC relative relocation to the symbol's procedure linkage table.
638 1.1 christos FIXME: not supported. */
639 1.1 christos HOWTO (R_PPC_PLTREL32, /* type */
640 1.1 christos 0, /* rightshift */
641 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
642 1.1 christos 32, /* bitsize */
643 1.1 christos TRUE, /* pc_relative */
644 1.1 christos 0, /* bitpos */
645 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
646 1.1 christos bfd_elf_generic_reloc, /* special_function */
647 1.1 christos "R_PPC_PLTREL32", /* name */
648 1.1 christos FALSE, /* partial_inplace */
649 1.1 christos 0, /* src_mask */
650 1.1 christos 0, /* dst_mask */
651 1.1 christos TRUE), /* pcrel_offset */
652 1.1 christos
653 1.1 christos /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
654 1.1 christos the symbol. */
655 1.1 christos HOWTO (R_PPC_PLT16_LO, /* type */
656 1.1 christos 0, /* rightshift */
657 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
658 1.1 christos 16, /* bitsize */
659 1.1 christos FALSE, /* pc_relative */
660 1.1 christos 0, /* bitpos */
661 1.1 christos complain_overflow_dont, /* complain_on_overflow */
662 1.1 christos bfd_elf_generic_reloc, /* special_function */
663 1.1 christos "R_PPC_PLT16_LO", /* name */
664 1.1 christos FALSE, /* partial_inplace */
665 1.1 christos 0, /* src_mask */
666 1.1 christos 0xffff, /* dst_mask */
667 1.1 christos FALSE), /* pcrel_offset */
668 1.1 christos
669 1.1 christos /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
670 1.1 christos the symbol. */
671 1.1 christos HOWTO (R_PPC_PLT16_HI, /* type */
672 1.1 christos 16, /* rightshift */
673 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
674 1.1 christos 16, /* bitsize */
675 1.1 christos FALSE, /* pc_relative */
676 1.1 christos 0, /* bitpos */
677 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
678 1.1 christos bfd_elf_generic_reloc, /* special_function */
679 1.1 christos "R_PPC_PLT16_HI", /* name */
680 1.1 christos FALSE, /* partial_inplace */
681 1.1 christos 0, /* src_mask */
682 1.1 christos 0xffff, /* dst_mask */
683 1.1 christos FALSE), /* pcrel_offset */
684 1.1 christos
685 1.1 christos /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
686 1.1 christos the symbol. */
687 1.1 christos HOWTO (R_PPC_PLT16_HA, /* type */
688 1.1 christos 16, /* rightshift */
689 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
690 1.1 christos 16, /* bitsize */
691 1.1 christos FALSE, /* pc_relative */
692 1.1 christos 0, /* bitpos */
693 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
694 1.1 christos ppc_elf_addr16_ha_reloc, /* special_function */
695 1.1 christos "R_PPC_PLT16_HA", /* name */
696 1.1 christos FALSE, /* partial_inplace */
697 1.1 christos 0, /* src_mask */
698 1.1 christos 0xffff, /* dst_mask */
699 1.1 christos FALSE), /* pcrel_offset */
700 1.1 christos
701 1.1 christos /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
702 1.1 christos small data items. */
703 1.1 christos HOWTO (R_PPC_SDAREL16, /* type */
704 1.1 christos 0, /* rightshift */
705 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
706 1.1 christos 16, /* bitsize */
707 1.1 christos FALSE, /* pc_relative */
708 1.1 christos 0, /* bitpos */
709 1.1 christos complain_overflow_signed, /* complain_on_overflow */
710 1.1 christos bfd_elf_generic_reloc, /* special_function */
711 1.1 christos "R_PPC_SDAREL16", /* name */
712 1.1 christos FALSE, /* partial_inplace */
713 1.1 christos 0, /* src_mask */
714 1.1 christos 0xffff, /* dst_mask */
715 1.1 christos FALSE), /* pcrel_offset */
716 1.1 christos
717 1.1 christos /* 16-bit section relative relocation. */
718 1.1 christos HOWTO (R_PPC_SECTOFF, /* type */
719 1.1 christos 0, /* rightshift */
720 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
721 1.1 christos 16, /* bitsize */
722 1.1 christos FALSE, /* pc_relative */
723 1.1 christos 0, /* bitpos */
724 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
725 1.1 christos bfd_elf_generic_reloc, /* special_function */
726 1.1 christos "R_PPC_SECTOFF", /* name */
727 1.1 christos FALSE, /* partial_inplace */
728 1.1 christos 0, /* src_mask */
729 1.1 christos 0xffff, /* dst_mask */
730 1.1 christos FALSE), /* pcrel_offset */
731 1.1 christos
732 1.1 christos /* 16-bit lower half section relative relocation. */
733 1.1 christos HOWTO (R_PPC_SECTOFF_LO, /* type */
734 1.1 christos 0, /* rightshift */
735 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
736 1.1 christos 16, /* bitsize */
737 1.1 christos FALSE, /* pc_relative */
738 1.1 christos 0, /* bitpos */
739 1.1 christos complain_overflow_dont, /* complain_on_overflow */
740 1.1 christos bfd_elf_generic_reloc, /* special_function */
741 1.1 christos "R_PPC_SECTOFF_LO", /* name */
742 1.1 christos FALSE, /* partial_inplace */
743 1.1 christos 0, /* src_mask */
744 1.1 christos 0xffff, /* dst_mask */
745 1.1 christos FALSE), /* pcrel_offset */
746 1.1 christos
747 1.1 christos /* 16-bit upper half section relative relocation. */
748 1.1 christos HOWTO (R_PPC_SECTOFF_HI, /* type */
749 1.1 christos 16, /* rightshift */
750 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
751 1.1 christos 16, /* bitsize */
752 1.1 christos FALSE, /* pc_relative */
753 1.1 christos 0, /* bitpos */
754 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
755 1.1 christos bfd_elf_generic_reloc, /* special_function */
756 1.1 christos "R_PPC_SECTOFF_HI", /* name */
757 1.1 christos FALSE, /* partial_inplace */
758 1.1 christos 0, /* src_mask */
759 1.1 christos 0xffff, /* dst_mask */
760 1.1 christos FALSE), /* pcrel_offset */
761 1.1 christos
762 1.1 christos /* 16-bit upper half adjusted section relative relocation. */
763 1.1 christos HOWTO (R_PPC_SECTOFF_HA, /* type */
764 1.1 christos 16, /* rightshift */
765 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
766 1.1 christos 16, /* bitsize */
767 1.1 christos FALSE, /* pc_relative */
768 1.1 christos 0, /* bitpos */
769 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
770 1.1 christos ppc_elf_addr16_ha_reloc, /* special_function */
771 1.1 christos "R_PPC_SECTOFF_HA", /* name */
772 1.1 christos FALSE, /* partial_inplace */
773 1.1 christos 0, /* src_mask */
774 1.1 christos 0xffff, /* dst_mask */
775 1.1 christos FALSE), /* pcrel_offset */
776 1.1 christos
777 1.1 christos /* Marker relocs for TLS. */
778 1.1 christos HOWTO (R_PPC_TLS,
779 1.1 christos 0, /* rightshift */
780 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
781 1.1 christos 32, /* bitsize */
782 1.1 christos FALSE, /* pc_relative */
783 1.1 christos 0, /* bitpos */
784 1.1 christos complain_overflow_dont, /* complain_on_overflow */
785 1.1 christos bfd_elf_generic_reloc, /* special_function */
786 1.1 christos "R_PPC_TLS", /* name */
787 1.1 christos FALSE, /* partial_inplace */
788 1.1 christos 0, /* src_mask */
789 1.1 christos 0, /* dst_mask */
790 1.1 christos FALSE), /* pcrel_offset */
791 1.1 christos
792 1.1 christos HOWTO (R_PPC_TLSGD,
793 1.1 christos 0, /* rightshift */
794 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
795 1.1 christos 32, /* bitsize */
796 1.1 christos FALSE, /* pc_relative */
797 1.1 christos 0, /* bitpos */
798 1.1 christos complain_overflow_dont, /* complain_on_overflow */
799 1.1 christos bfd_elf_generic_reloc, /* special_function */
800 1.1 christos "R_PPC_TLSGD", /* name */
801 1.1 christos FALSE, /* partial_inplace */
802 1.1 christos 0, /* src_mask */
803 1.1 christos 0, /* dst_mask */
804 1.1 christos FALSE), /* pcrel_offset */
805 1.1 christos
806 1.1 christos HOWTO (R_PPC_TLSLD,
807 1.1 christos 0, /* rightshift */
808 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
809 1.1 christos 32, /* bitsize */
810 1.1 christos FALSE, /* pc_relative */
811 1.1 christos 0, /* bitpos */
812 1.1 christos complain_overflow_dont, /* complain_on_overflow */
813 1.1 christos bfd_elf_generic_reloc, /* special_function */
814 1.1 christos "R_PPC_TLSLD", /* name */
815 1.1 christos FALSE, /* partial_inplace */
816 1.1 christos 0, /* src_mask */
817 1.1 christos 0, /* dst_mask */
818 1.1 christos FALSE), /* pcrel_offset */
819 1.1 christos
820 1.1 christos /* Computes the load module index of the load module that contains the
821 1.1 christos definition of its TLS sym. */
822 1.1 christos HOWTO (R_PPC_DTPMOD32,
823 1.1 christos 0, /* rightshift */
824 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
825 1.1 christos 32, /* bitsize */
826 1.1 christos FALSE, /* pc_relative */
827 1.1 christos 0, /* bitpos */
828 1.1 christos complain_overflow_dont, /* complain_on_overflow */
829 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
830 1.1 christos "R_PPC_DTPMOD32", /* name */
831 1.1 christos FALSE, /* partial_inplace */
832 1.1 christos 0, /* src_mask */
833 1.1 christos 0xffffffff, /* dst_mask */
834 1.1 christos FALSE), /* pcrel_offset */
835 1.1 christos
836 1.1 christos /* Computes a dtv-relative displacement, the difference between the value
837 1.1 christos of sym+add and the base address of the thread-local storage block that
838 1.1 christos contains the definition of sym, minus 0x8000. */
839 1.1 christos HOWTO (R_PPC_DTPREL32,
840 1.1 christos 0, /* rightshift */
841 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
842 1.1 christos 32, /* bitsize */
843 1.1 christos FALSE, /* pc_relative */
844 1.1 christos 0, /* bitpos */
845 1.1 christos complain_overflow_dont, /* complain_on_overflow */
846 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
847 1.1 christos "R_PPC_DTPREL32", /* name */
848 1.1 christos FALSE, /* partial_inplace */
849 1.1 christos 0, /* src_mask */
850 1.1 christos 0xffffffff, /* dst_mask */
851 1.1 christos FALSE), /* pcrel_offset */
852 1.1 christos
853 1.1 christos /* A 16 bit dtprel reloc. */
854 1.1 christos HOWTO (R_PPC_DTPREL16,
855 1.1 christos 0, /* rightshift */
856 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
857 1.1 christos 16, /* bitsize */
858 1.1 christos FALSE, /* pc_relative */
859 1.1 christos 0, /* bitpos */
860 1.1 christos complain_overflow_signed, /* complain_on_overflow */
861 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
862 1.1 christos "R_PPC_DTPREL16", /* name */
863 1.1 christos FALSE, /* partial_inplace */
864 1.1 christos 0, /* src_mask */
865 1.1 christos 0xffff, /* dst_mask */
866 1.1 christos FALSE), /* pcrel_offset */
867 1.1 christos
868 1.1 christos /* Like DTPREL16, but no overflow. */
869 1.1 christos HOWTO (R_PPC_DTPREL16_LO,
870 1.1 christos 0, /* rightshift */
871 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
872 1.1 christos 16, /* bitsize */
873 1.1 christos FALSE, /* pc_relative */
874 1.1 christos 0, /* bitpos */
875 1.1 christos complain_overflow_dont, /* complain_on_overflow */
876 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
877 1.1 christos "R_PPC_DTPREL16_LO", /* name */
878 1.1 christos FALSE, /* partial_inplace */
879 1.1 christos 0, /* src_mask */
880 1.1 christos 0xffff, /* dst_mask */
881 1.1 christos FALSE), /* pcrel_offset */
882 1.1 christos
883 1.1 christos /* Like DTPREL16_LO, but next higher group of 16 bits. */
884 1.1 christos HOWTO (R_PPC_DTPREL16_HI,
885 1.1 christos 16, /* rightshift */
886 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
887 1.1 christos 16, /* bitsize */
888 1.1 christos FALSE, /* pc_relative */
889 1.1 christos 0, /* bitpos */
890 1.1 christos complain_overflow_dont, /* complain_on_overflow */
891 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
892 1.1 christos "R_PPC_DTPREL16_HI", /* name */
893 1.1 christos FALSE, /* partial_inplace */
894 1.1 christos 0, /* src_mask */
895 1.1 christos 0xffff, /* dst_mask */
896 1.1 christos FALSE), /* pcrel_offset */
897 1.1 christos
898 1.1 christos /* Like DTPREL16_HI, but adjust for low 16 bits. */
899 1.1 christos HOWTO (R_PPC_DTPREL16_HA,
900 1.1 christos 16, /* rightshift */
901 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
902 1.1 christos 16, /* bitsize */
903 1.1 christos FALSE, /* pc_relative */
904 1.1 christos 0, /* bitpos */
905 1.1 christos complain_overflow_dont, /* complain_on_overflow */
906 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
907 1.1 christos "R_PPC_DTPREL16_HA", /* name */
908 1.1 christos FALSE, /* partial_inplace */
909 1.1 christos 0, /* src_mask */
910 1.1 christos 0xffff, /* dst_mask */
911 1.1 christos FALSE), /* pcrel_offset */
912 1.1 christos
913 1.1 christos /* Computes a tp-relative displacement, the difference between the value of
914 1.1 christos sym+add and the value of the thread pointer (r13). */
915 1.1 christos HOWTO (R_PPC_TPREL32,
916 1.1 christos 0, /* rightshift */
917 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
918 1.1 christos 32, /* bitsize */
919 1.1 christos FALSE, /* pc_relative */
920 1.1 christos 0, /* bitpos */
921 1.1 christos complain_overflow_dont, /* complain_on_overflow */
922 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
923 1.1 christos "R_PPC_TPREL32", /* name */
924 1.1 christos FALSE, /* partial_inplace */
925 1.1 christos 0, /* src_mask */
926 1.1 christos 0xffffffff, /* dst_mask */
927 1.1 christos FALSE), /* pcrel_offset */
928 1.1 christos
929 1.1 christos /* A 16 bit tprel reloc. */
930 1.1 christos HOWTO (R_PPC_TPREL16,
931 1.1 christos 0, /* rightshift */
932 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
933 1.1 christos 16, /* bitsize */
934 1.1 christos FALSE, /* pc_relative */
935 1.1 christos 0, /* bitpos */
936 1.1 christos complain_overflow_signed, /* complain_on_overflow */
937 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
938 1.1 christos "R_PPC_TPREL16", /* name */
939 1.1 christos FALSE, /* partial_inplace */
940 1.1 christos 0, /* src_mask */
941 1.1 christos 0xffff, /* dst_mask */
942 1.1 christos FALSE), /* pcrel_offset */
943 1.1 christos
944 1.1 christos /* Like TPREL16, but no overflow. */
945 1.1 christos HOWTO (R_PPC_TPREL16_LO,
946 1.1 christos 0, /* rightshift */
947 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
948 1.1 christos 16, /* bitsize */
949 1.1 christos FALSE, /* pc_relative */
950 1.1 christos 0, /* bitpos */
951 1.1 christos complain_overflow_dont, /* complain_on_overflow */
952 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
953 1.1 christos "R_PPC_TPREL16_LO", /* name */
954 1.1 christos FALSE, /* partial_inplace */
955 1.1 christos 0, /* src_mask */
956 1.1 christos 0xffff, /* dst_mask */
957 1.1 christos FALSE), /* pcrel_offset */
958 1.1 christos
959 1.1 christos /* Like TPREL16_LO, but next higher group of 16 bits. */
960 1.1 christos HOWTO (R_PPC_TPREL16_HI,
961 1.1 christos 16, /* rightshift */
962 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
963 1.1 christos 16, /* bitsize */
964 1.1 christos FALSE, /* pc_relative */
965 1.1 christos 0, /* bitpos */
966 1.1 christos complain_overflow_dont, /* complain_on_overflow */
967 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
968 1.1 christos "R_PPC_TPREL16_HI", /* name */
969 1.1 christos FALSE, /* partial_inplace */
970 1.1 christos 0, /* src_mask */
971 1.1 christos 0xffff, /* dst_mask */
972 1.1 christos FALSE), /* pcrel_offset */
973 1.1 christos
974 1.1 christos /* Like TPREL16_HI, but adjust for low 16 bits. */
975 1.1 christos HOWTO (R_PPC_TPREL16_HA,
976 1.1 christos 16, /* rightshift */
977 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
978 1.1 christos 16, /* bitsize */
979 1.1 christos FALSE, /* pc_relative */
980 1.1 christos 0, /* bitpos */
981 1.1 christos complain_overflow_dont, /* complain_on_overflow */
982 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
983 1.1 christos "R_PPC_TPREL16_HA", /* name */
984 1.1 christos FALSE, /* partial_inplace */
985 1.1 christos 0, /* src_mask */
986 1.1 christos 0xffff, /* dst_mask */
987 1.1 christos FALSE), /* pcrel_offset */
988 1.1 christos
989 1.1 christos /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
990 1.1 christos with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
991 1.1 christos to the first entry. */
992 1.1 christos HOWTO (R_PPC_GOT_TLSGD16,
993 1.1 christos 0, /* rightshift */
994 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
995 1.1 christos 16, /* bitsize */
996 1.1 christos FALSE, /* pc_relative */
997 1.1 christos 0, /* bitpos */
998 1.1 christos complain_overflow_signed, /* complain_on_overflow */
999 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1000 1.1 christos "R_PPC_GOT_TLSGD16", /* name */
1001 1.1 christos FALSE, /* partial_inplace */
1002 1.1 christos 0, /* src_mask */
1003 1.1 christos 0xffff, /* dst_mask */
1004 1.1 christos FALSE), /* pcrel_offset */
1005 1.1 christos
1006 1.1 christos /* Like GOT_TLSGD16, but no overflow. */
1007 1.1 christos HOWTO (R_PPC_GOT_TLSGD16_LO,
1008 1.1 christos 0, /* rightshift */
1009 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1010 1.1 christos 16, /* bitsize */
1011 1.1 christos FALSE, /* pc_relative */
1012 1.1 christos 0, /* bitpos */
1013 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1014 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1015 1.1 christos "R_PPC_GOT_TLSGD16_LO", /* name */
1016 1.1 christos FALSE, /* partial_inplace */
1017 1.1 christos 0, /* src_mask */
1018 1.1 christos 0xffff, /* dst_mask */
1019 1.1 christos FALSE), /* pcrel_offset */
1020 1.1 christos
1021 1.1 christos /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1022 1.1 christos HOWTO (R_PPC_GOT_TLSGD16_HI,
1023 1.1 christos 16, /* rightshift */
1024 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1025 1.1 christos 16, /* bitsize */
1026 1.1 christos FALSE, /* pc_relative */
1027 1.1 christos 0, /* bitpos */
1028 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1029 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1030 1.1 christos "R_PPC_GOT_TLSGD16_HI", /* name */
1031 1.1 christos FALSE, /* partial_inplace */
1032 1.1 christos 0, /* src_mask */
1033 1.1 christos 0xffff, /* dst_mask */
1034 1.1 christos FALSE), /* pcrel_offset */
1035 1.1 christos
1036 1.1 christos /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1037 1.1 christos HOWTO (R_PPC_GOT_TLSGD16_HA,
1038 1.1 christos 16, /* rightshift */
1039 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1040 1.1 christos 16, /* bitsize */
1041 1.1 christos FALSE, /* pc_relative */
1042 1.1 christos 0, /* bitpos */
1043 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1044 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1045 1.1 christos "R_PPC_GOT_TLSGD16_HA", /* name */
1046 1.1 christos FALSE, /* partial_inplace */
1047 1.1 christos 0, /* src_mask */
1048 1.1 christos 0xffff, /* dst_mask */
1049 1.1 christos FALSE), /* pcrel_offset */
1050 1.1 christos
1051 1.1 christos /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1052 1.1 christos with values (sym+add)@dtpmod and zero, and computes the offset to the
1053 1.1 christos first entry. */
1054 1.1 christos HOWTO (R_PPC_GOT_TLSLD16,
1055 1.1 christos 0, /* rightshift */
1056 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1057 1.1 christos 16, /* bitsize */
1058 1.1 christos FALSE, /* pc_relative */
1059 1.1 christos 0, /* bitpos */
1060 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1061 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1062 1.1 christos "R_PPC_GOT_TLSLD16", /* name */
1063 1.1 christos FALSE, /* partial_inplace */
1064 1.1 christos 0, /* src_mask */
1065 1.1 christos 0xffff, /* dst_mask */
1066 1.1 christos FALSE), /* pcrel_offset */
1067 1.1 christos
1068 1.1 christos /* Like GOT_TLSLD16, but no overflow. */
1069 1.1 christos HOWTO (R_PPC_GOT_TLSLD16_LO,
1070 1.1 christos 0, /* rightshift */
1071 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1072 1.1 christos 16, /* bitsize */
1073 1.1 christos FALSE, /* pc_relative */
1074 1.1 christos 0, /* bitpos */
1075 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1076 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1077 1.1 christos "R_PPC_GOT_TLSLD16_LO", /* name */
1078 1.1 christos FALSE, /* partial_inplace */
1079 1.1 christos 0, /* src_mask */
1080 1.1 christos 0xffff, /* dst_mask */
1081 1.1 christos FALSE), /* pcrel_offset */
1082 1.1 christos
1083 1.1 christos /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1084 1.1 christos HOWTO (R_PPC_GOT_TLSLD16_HI,
1085 1.1 christos 16, /* rightshift */
1086 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1087 1.1 christos 16, /* bitsize */
1088 1.1 christos FALSE, /* pc_relative */
1089 1.1 christos 0, /* bitpos */
1090 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1091 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1092 1.1 christos "R_PPC_GOT_TLSLD16_HI", /* name */
1093 1.1 christos FALSE, /* partial_inplace */
1094 1.1 christos 0, /* src_mask */
1095 1.1 christos 0xffff, /* dst_mask */
1096 1.1 christos FALSE), /* pcrel_offset */
1097 1.1 christos
1098 1.1 christos /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1099 1.1 christos HOWTO (R_PPC_GOT_TLSLD16_HA,
1100 1.1 christos 16, /* rightshift */
1101 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1102 1.1 christos 16, /* bitsize */
1103 1.1 christos FALSE, /* pc_relative */
1104 1.1 christos 0, /* bitpos */
1105 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1106 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1107 1.1 christos "R_PPC_GOT_TLSLD16_HA", /* name */
1108 1.1 christos FALSE, /* partial_inplace */
1109 1.1 christos 0, /* src_mask */
1110 1.1 christos 0xffff, /* dst_mask */
1111 1.1 christos FALSE), /* pcrel_offset */
1112 1.1 christos
1113 1.1 christos /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1114 1.1 christos the offset to the entry. */
1115 1.1 christos HOWTO (R_PPC_GOT_DTPREL16,
1116 1.1 christos 0, /* rightshift */
1117 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1118 1.1 christos 16, /* bitsize */
1119 1.1 christos FALSE, /* pc_relative */
1120 1.1 christos 0, /* bitpos */
1121 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1122 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1123 1.1 christos "R_PPC_GOT_DTPREL16", /* name */
1124 1.1 christos FALSE, /* partial_inplace */
1125 1.1 christos 0, /* src_mask */
1126 1.1 christos 0xffff, /* dst_mask */
1127 1.1 christos FALSE), /* pcrel_offset */
1128 1.1 christos
1129 1.1 christos /* Like GOT_DTPREL16, but no overflow. */
1130 1.1 christos HOWTO (R_PPC_GOT_DTPREL16_LO,
1131 1.1 christos 0, /* rightshift */
1132 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1133 1.1 christos 16, /* bitsize */
1134 1.1 christos FALSE, /* pc_relative */
1135 1.1 christos 0, /* bitpos */
1136 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1137 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1138 1.1 christos "R_PPC_GOT_DTPREL16_LO", /* name */
1139 1.1 christos FALSE, /* partial_inplace */
1140 1.1 christos 0, /* src_mask */
1141 1.1 christos 0xffff, /* dst_mask */
1142 1.1 christos FALSE), /* pcrel_offset */
1143 1.1 christos
1144 1.1 christos /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1145 1.1 christos HOWTO (R_PPC_GOT_DTPREL16_HI,
1146 1.1 christos 16, /* rightshift */
1147 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1148 1.1 christos 16, /* bitsize */
1149 1.1 christos FALSE, /* pc_relative */
1150 1.1 christos 0, /* bitpos */
1151 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1152 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1153 1.1 christos "R_PPC_GOT_DTPREL16_HI", /* name */
1154 1.1 christos FALSE, /* partial_inplace */
1155 1.1 christos 0, /* src_mask */
1156 1.1 christos 0xffff, /* dst_mask */
1157 1.1 christos FALSE), /* pcrel_offset */
1158 1.1 christos
1159 1.1 christos /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1160 1.1 christos HOWTO (R_PPC_GOT_DTPREL16_HA,
1161 1.1 christos 16, /* rightshift */
1162 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1163 1.1 christos 16, /* bitsize */
1164 1.1 christos FALSE, /* pc_relative */
1165 1.1 christos 0, /* bitpos */
1166 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1167 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1168 1.1 christos "R_PPC_GOT_DTPREL16_HA", /* name */
1169 1.1 christos FALSE, /* partial_inplace */
1170 1.1 christos 0, /* src_mask */
1171 1.1 christos 0xffff, /* dst_mask */
1172 1.1 christos FALSE), /* pcrel_offset */
1173 1.1 christos
1174 1.1 christos /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1175 1.1 christos offset to the entry. */
1176 1.1 christos HOWTO (R_PPC_GOT_TPREL16,
1177 1.1 christos 0, /* rightshift */
1178 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1179 1.1 christos 16, /* bitsize */
1180 1.1 christos FALSE, /* pc_relative */
1181 1.1 christos 0, /* bitpos */
1182 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1183 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1184 1.1 christos "R_PPC_GOT_TPREL16", /* name */
1185 1.1 christos FALSE, /* partial_inplace */
1186 1.1 christos 0, /* src_mask */
1187 1.1 christos 0xffff, /* dst_mask */
1188 1.1 christos FALSE), /* pcrel_offset */
1189 1.1 christos
1190 1.1 christos /* Like GOT_TPREL16, but no overflow. */
1191 1.1 christos HOWTO (R_PPC_GOT_TPREL16_LO,
1192 1.1 christos 0, /* rightshift */
1193 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1194 1.1 christos 16, /* bitsize */
1195 1.1 christos FALSE, /* pc_relative */
1196 1.1 christos 0, /* bitpos */
1197 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1198 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1199 1.1 christos "R_PPC_GOT_TPREL16_LO", /* name */
1200 1.1 christos FALSE, /* partial_inplace */
1201 1.1 christos 0, /* src_mask */
1202 1.1 christos 0xffff, /* dst_mask */
1203 1.1 christos FALSE), /* pcrel_offset */
1204 1.1 christos
1205 1.1 christos /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1206 1.1 christos HOWTO (R_PPC_GOT_TPREL16_HI,
1207 1.1 christos 16, /* rightshift */
1208 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1209 1.1 christos 16, /* bitsize */
1210 1.1 christos FALSE, /* pc_relative */
1211 1.1 christos 0, /* bitpos */
1212 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1213 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1214 1.1 christos "R_PPC_GOT_TPREL16_HI", /* name */
1215 1.1 christos FALSE, /* partial_inplace */
1216 1.1 christos 0, /* src_mask */
1217 1.1 christos 0xffff, /* dst_mask */
1218 1.1 christos FALSE), /* pcrel_offset */
1219 1.1 christos
1220 1.1 christos /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1221 1.1 christos HOWTO (R_PPC_GOT_TPREL16_HA,
1222 1.1 christos 16, /* rightshift */
1223 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1224 1.1 christos 16, /* bitsize */
1225 1.1 christos FALSE, /* pc_relative */
1226 1.1 christos 0, /* bitpos */
1227 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1228 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1229 1.1 christos "R_PPC_GOT_TPREL16_HA", /* name */
1230 1.1 christos FALSE, /* partial_inplace */
1231 1.1 christos 0, /* src_mask */
1232 1.1 christos 0xffff, /* dst_mask */
1233 1.1 christos FALSE), /* pcrel_offset */
1234 1.1 christos
1235 1.1 christos /* The remaining relocs are from the Embedded ELF ABI, and are not
1236 1.1 christos in the SVR4 ELF ABI. */
1237 1.1 christos
1238 1.1 christos /* 32 bit value resulting from the addend minus the symbol. */
1239 1.1 christos HOWTO (R_PPC_EMB_NADDR32, /* type */
1240 1.1 christos 0, /* rightshift */
1241 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1242 1.1 christos 32, /* bitsize */
1243 1.1 christos FALSE, /* pc_relative */
1244 1.1 christos 0, /* bitpos */
1245 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
1246 1.1 christos bfd_elf_generic_reloc, /* special_function */
1247 1.1 christos "R_PPC_EMB_NADDR32", /* name */
1248 1.1 christos FALSE, /* partial_inplace */
1249 1.1 christos 0, /* src_mask */
1250 1.1 christos 0xffffffff, /* dst_mask */
1251 1.1 christos FALSE), /* pcrel_offset */
1252 1.1 christos
1253 1.1 christos /* 16 bit value resulting from the addend minus the symbol. */
1254 1.1 christos HOWTO (R_PPC_EMB_NADDR16, /* type */
1255 1.1 christos 0, /* rightshift */
1256 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1257 1.1 christos 16, /* bitsize */
1258 1.1 christos FALSE, /* pc_relative */
1259 1.1 christos 0, /* bitpos */
1260 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
1261 1.1 christos bfd_elf_generic_reloc, /* special_function */
1262 1.1 christos "R_PPC_EMB_NADDR16", /* name */
1263 1.1 christos FALSE, /* partial_inplace */
1264 1.1 christos 0, /* src_mask */
1265 1.1 christos 0xffff, /* dst_mask */
1266 1.1 christos FALSE), /* pcrel_offset */
1267 1.1 christos
1268 1.1 christos /* 16 bit value resulting from the addend minus the symbol. */
1269 1.1 christos HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1270 1.1 christos 0, /* rightshift */
1271 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1272 1.1 christos 16, /* bitsize */
1273 1.1 christos FALSE, /* pc_relative */
1274 1.1 christos 0, /* bitpos */
1275 1.1 christos complain_overflow_dont,/* complain_on_overflow */
1276 1.1 christos bfd_elf_generic_reloc, /* special_function */
1277 1.1 christos "R_PPC_EMB_ADDR16_LO", /* name */
1278 1.1 christos FALSE, /* partial_inplace */
1279 1.1 christos 0, /* src_mask */
1280 1.1 christos 0xffff, /* dst_mask */
1281 1.1 christos FALSE), /* pcrel_offset */
1282 1.1 christos
1283 1.1 christos /* The high order 16 bits of the addend minus the symbol. */
1284 1.1 christos HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1285 1.1 christos 16, /* rightshift */
1286 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1287 1.1 christos 16, /* bitsize */
1288 1.1 christos FALSE, /* pc_relative */
1289 1.1 christos 0, /* bitpos */
1290 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1291 1.1 christos bfd_elf_generic_reloc, /* special_function */
1292 1.1 christos "R_PPC_EMB_NADDR16_HI", /* name */
1293 1.1 christos FALSE, /* partial_inplace */
1294 1.1 christos 0, /* src_mask */
1295 1.1 christos 0xffff, /* dst_mask */
1296 1.1 christos FALSE), /* pcrel_offset */
1297 1.1 christos
1298 1.1 christos /* The high order 16 bits of the result of the addend minus the address,
1299 1.1 christos plus 1 if the contents of the low 16 bits, treated as a signed number,
1300 1.1 christos is negative. */
1301 1.1 christos HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1302 1.1 christos 16, /* rightshift */
1303 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1304 1.1 christos 16, /* bitsize */
1305 1.1 christos FALSE, /* pc_relative */
1306 1.1 christos 0, /* bitpos */
1307 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1308 1.1 christos ppc_elf_addr16_ha_reloc, /* special_function */
1309 1.1 christos "R_PPC_EMB_NADDR16_HA", /* name */
1310 1.1 christos FALSE, /* partial_inplace */
1311 1.1 christos 0, /* src_mask */
1312 1.1 christos 0xffff, /* dst_mask */
1313 1.1 christos FALSE), /* pcrel_offset */
1314 1.1 christos
1315 1.1 christos /* 16 bit value resulting from allocating a 4 byte word to hold an
1316 1.1 christos address in the .sdata section, and returning the offset from
1317 1.1 christos _SDA_BASE_ for that relocation. */
1318 1.1 christos HOWTO (R_PPC_EMB_SDAI16, /* type */
1319 1.1 christos 0, /* rightshift */
1320 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1321 1.1 christos 16, /* bitsize */
1322 1.1 christos FALSE, /* pc_relative */
1323 1.1 christos 0, /* bitpos */
1324 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1325 1.1 christos bfd_elf_generic_reloc, /* special_function */
1326 1.1 christos "R_PPC_EMB_SDAI16", /* name */
1327 1.1 christos FALSE, /* partial_inplace */
1328 1.1 christos 0, /* src_mask */
1329 1.1 christos 0xffff, /* dst_mask */
1330 1.1 christos FALSE), /* pcrel_offset */
1331 1.1 christos
1332 1.1 christos /* 16 bit value resulting from allocating a 4 byte word to hold an
1333 1.1 christos address in the .sdata2 section, and returning the offset from
1334 1.1 christos _SDA2_BASE_ for that relocation. */
1335 1.1 christos HOWTO (R_PPC_EMB_SDA2I16, /* type */
1336 1.1 christos 0, /* rightshift */
1337 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1338 1.1 christos 16, /* bitsize */
1339 1.1 christos FALSE, /* pc_relative */
1340 1.1 christos 0, /* bitpos */
1341 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1342 1.1 christos bfd_elf_generic_reloc, /* special_function */
1343 1.1 christos "R_PPC_EMB_SDA2I16", /* name */
1344 1.1 christos FALSE, /* partial_inplace */
1345 1.1 christos 0, /* src_mask */
1346 1.1 christos 0xffff, /* dst_mask */
1347 1.1 christos FALSE), /* pcrel_offset */
1348 1.1 christos
1349 1.1 christos /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1350 1.1 christos small data items. */
1351 1.1 christos HOWTO (R_PPC_EMB_SDA2REL, /* type */
1352 1.1 christos 0, /* rightshift */
1353 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1354 1.1 christos 16, /* bitsize */
1355 1.1 christos FALSE, /* pc_relative */
1356 1.1 christos 0, /* bitpos */
1357 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1358 1.1 christos bfd_elf_generic_reloc, /* special_function */
1359 1.1 christos "R_PPC_EMB_SDA2REL", /* name */
1360 1.1 christos FALSE, /* partial_inplace */
1361 1.1 christos 0, /* src_mask */
1362 1.1 christos 0xffff, /* dst_mask */
1363 1.1 christos FALSE), /* pcrel_offset */
1364 1.1 christos
1365 1.1 christos /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1366 1.1 christos signed offset from the appropriate base, and filling in the register
1367 1.1 christos field with the appropriate register (0, 2, or 13). */
1368 1.1 christos HOWTO (R_PPC_EMB_SDA21, /* type */
1369 1.1 christos 0, /* rightshift */
1370 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1371 1.1 christos 16, /* bitsize */
1372 1.1 christos FALSE, /* pc_relative */
1373 1.1 christos 0, /* bitpos */
1374 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1375 1.1 christos bfd_elf_generic_reloc, /* special_function */
1376 1.1 christos "R_PPC_EMB_SDA21", /* name */
1377 1.1 christos FALSE, /* partial_inplace */
1378 1.1 christos 0, /* src_mask */
1379 1.1 christos 0xffff, /* dst_mask */
1380 1.1 christos FALSE), /* pcrel_offset */
1381 1.1 christos
1382 1.1 christos /* Relocation not handled: R_PPC_EMB_MRKREF */
1383 1.1 christos /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1384 1.1 christos /* Relocation not handled: R_PPC_EMB_RELST_LO */
1385 1.1 christos /* Relocation not handled: R_PPC_EMB_RELST_HI */
1386 1.1 christos /* Relocation not handled: R_PPC_EMB_RELST_HA */
1387 1.1 christos /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1388 1.1 christos
1389 1.1 christos /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1390 1.1 christos in the 16 bit signed offset from the appropriate base, and filling in the
1391 1.1 christos register field with the appropriate register (0, 2, or 13). */
1392 1.1 christos HOWTO (R_PPC_EMB_RELSDA, /* type */
1393 1.1 christos 0, /* rightshift */
1394 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1395 1.1 christos 16, /* bitsize */
1396 1.1 christos FALSE, /* pc_relative */
1397 1.1 christos 0, /* bitpos */
1398 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1399 1.1 christos bfd_elf_generic_reloc, /* special_function */
1400 1.1 christos "R_PPC_EMB_RELSDA", /* name */
1401 1.1 christos FALSE, /* partial_inplace */
1402 1.1 christos 0, /* src_mask */
1403 1.1 christos 0xffff, /* dst_mask */
1404 1.1 christos FALSE), /* pcrel_offset */
1405 1.1 christos
1406 1.1 christos /* A relative 8 bit branch. */
1407 1.1 christos HOWTO (R_PPC_VLE_REL8, /* type */
1408 1.1 christos 1, /* rightshift */
1409 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1410 1.1 christos 8, /* bitsize */
1411 1.1 christos TRUE, /* pc_relative */
1412 1.1 christos 0, /* bitpos */
1413 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1414 1.1 christos bfd_elf_generic_reloc, /* special_function */
1415 1.1 christos "R_PPC_VLE_REL8", /* name */
1416 1.1 christos FALSE, /* partial_inplace */
1417 1.1 christos 0, /* src_mask */
1418 1.1 christos 0xff, /* dst_mask */
1419 1.1 christos TRUE), /* pcrel_offset */
1420 1.1 christos
1421 1.1 christos /* A relative 15 bit branch. */
1422 1.1 christos HOWTO (R_PPC_VLE_REL15, /* type */
1423 1.1 christos 1, /* rightshift */
1424 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1425 1.1 christos 15, /* bitsize */
1426 1.1 christos TRUE, /* pc_relative */
1427 1.1 christos 1, /* bitpos */
1428 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1429 1.1 christos bfd_elf_generic_reloc, /* special_function */
1430 1.1 christos "R_PPC_VLE_REL15", /* name */
1431 1.1 christos FALSE, /* partial_inplace */
1432 1.1 christos 0, /* src_mask */
1433 1.1 christos 0xfe, /* dst_mask */
1434 1.1 christos TRUE), /* pcrel_offset */
1435 1.1 christos
1436 1.1 christos /* A relative 24 bit branch. */
1437 1.1 christos HOWTO (R_PPC_VLE_REL24, /* type */
1438 1.1 christos 1, /* rightshift */
1439 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1440 1.1 christos 24, /* bitsize */
1441 1.1 christos TRUE, /* pc_relative */
1442 1.1 christos 1, /* bitpos */
1443 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1444 1.1 christos bfd_elf_generic_reloc, /* special_function */
1445 1.1 christos "R_PPC_VLE_REL24", /* name */
1446 1.1 christos FALSE, /* partial_inplace */
1447 1.1 christos 0, /* src_mask */
1448 1.1 christos 0x1fffffe, /* dst_mask */
1449 1.1 christos TRUE), /* pcrel_offset */
1450 1.1 christos
1451 1.1 christos /* The 16 LSBS in split16a format. */
1452 1.1 christos HOWTO (R_PPC_VLE_LO16A, /* type */
1453 1.1 christos 0, /* rightshift */
1454 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1455 1.1 christos 32, /* bitsize */
1456 1.1 christos FALSE, /* pc_relative */
1457 1.1 christos 0, /* bitpos */
1458 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
1459 1.1 christos bfd_elf_generic_reloc, /* special_function */
1460 1.1 christos "R_PPC_VLE_LO16A", /* name */
1461 1.1 christos FALSE, /* partial_inplace */
1462 1.1 christos 0, /* src_mask */
1463 1.1 christos 0x1f007ff, /* dst_mask */
1464 1.1 christos FALSE), /* pcrel_offset */
1465 1.1 christos
1466 1.1 christos /* The 16 LSBS in split16d format. */
1467 1.1 christos HOWTO (R_PPC_VLE_LO16D, /* type */
1468 1.1 christos 0, /* rightshift */
1469 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1470 1.1 christos 32, /* bitsize */
1471 1.1 christos FALSE, /* pc_relative */
1472 1.1 christos 0, /* bitpos */
1473 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
1474 1.1 christos bfd_elf_generic_reloc, /* special_function */
1475 1.1 christos "R_PPC_VLE_LO16D", /* name */
1476 1.1 christos FALSE, /* partial_inplace */
1477 1.1 christos 0, /* src_mask */
1478 1.1 christos 0x1f07ff, /* dst_mask */
1479 1.1 christos FALSE), /* pcrel_offset */
1480 1.1 christos
1481 1.1 christos /* Bits 16-31 split16a format. */
1482 1.1 christos HOWTO (R_PPC_VLE_HI16A, /* type */
1483 1.1 christos 0, /* rightshift */
1484 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1485 1.1 christos 32, /* bitsize */
1486 1.1 christos FALSE, /* pc_relative */
1487 1.1 christos 0, /* bitpos */
1488 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
1489 1.1 christos bfd_elf_generic_reloc, /* special_function */
1490 1.1 christos "R_PPC_VLE_HI16A", /* name */
1491 1.1 christos FALSE, /* partial_inplace */
1492 1.1 christos 0, /* src_mask */
1493 1.1 christos 0x1f007ff, /* dst_mask */
1494 1.1 christos FALSE), /* pcrel_offset */
1495 1.1 christos
1496 1.1 christos /* Bits 16-31 split16d format. */
1497 1.1 christos HOWTO (R_PPC_VLE_HI16D, /* type */
1498 1.1 christos 0, /* rightshift */
1499 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1500 1.1 christos 32, /* bitsize */
1501 1.1 christos FALSE, /* pc_relative */
1502 1.1 christos 0, /* bitpos */
1503 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
1504 1.1 christos bfd_elf_generic_reloc, /* special_function */
1505 1.1 christos "R_PPC_VLE_HI16D", /* name */
1506 1.1 christos FALSE, /* partial_inplace */
1507 1.1 christos 0, /* src_mask */
1508 1.1 christos 0x1f07ff, /* dst_mask */
1509 1.1 christos FALSE), /* pcrel_offset */
1510 1.1 christos
1511 1.1 christos /* Bits 16-31 (High Adjusted) in split16a format. */
1512 1.1 christos HOWTO (R_PPC_VLE_HA16A, /* type */
1513 1.1 christos 0, /* rightshift */
1514 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1515 1.1 christos 32, /* bitsize */
1516 1.1 christos FALSE, /* pc_relative */
1517 1.1 christos 0, /* bitpos */
1518 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
1519 1.1 christos bfd_elf_generic_reloc, /* special_function */
1520 1.1 christos "R_PPC_VLE_HA16A", /* name */
1521 1.1 christos FALSE, /* partial_inplace */
1522 1.1 christos 0, /* src_mask */
1523 1.1 christos 0x1f007ff, /* dst_mask */
1524 1.1 christos FALSE), /* pcrel_offset */
1525 1.1 christos
1526 1.1 christos /* Bits 16-31 (High Adjusted) in split16d format. */
1527 1.1 christos HOWTO (R_PPC_VLE_HA16D, /* type */
1528 1.1 christos 0, /* rightshift */
1529 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1530 1.1 christos 32, /* bitsize */
1531 1.1 christos FALSE, /* pc_relative */
1532 1.1 christos 0, /* bitpos */
1533 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
1534 1.1 christos bfd_elf_generic_reloc, /* special_function */
1535 1.1 christos "R_PPC_VLE_HA16D", /* name */
1536 1.1 christos FALSE, /* partial_inplace */
1537 1.1 christos 0, /* src_mask */
1538 1.1 christos 0x1f07ff, /* dst_mask */
1539 1.1 christos FALSE), /* pcrel_offset */
1540 1.1 christos
1541 1.1 christos /* This reloc does nothing. */
1542 1.1 christos HOWTO (R_PPC_VLE_SDA21, /* type */
1543 1.1 christos 0, /* rightshift */
1544 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1545 1.1 christos 32, /* bitsize */
1546 1.1 christos FALSE, /* pc_relative */
1547 1.1 christos 0, /* bitpos */
1548 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
1549 1.1 christos bfd_elf_generic_reloc, /* special_function */
1550 1.1 christos "R_PPC_VLE_SDA21", /* name */
1551 1.1 christos FALSE, /* partial_inplace */
1552 1.1 christos 0, /* src_mask */
1553 1.1 christos 0xffff, /* dst_mask */
1554 1.1 christos FALSE), /* pcrel_offset */
1555 1.1 christos
1556 1.1 christos /* This reloc does nothing. */
1557 1.1 christos HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1558 1.1 christos 0, /* rightshift */
1559 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1560 1.1 christos 32, /* bitsize */
1561 1.1 christos FALSE, /* pc_relative */
1562 1.1 christos 0, /* bitpos */
1563 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
1564 1.1 christos bfd_elf_generic_reloc, /* special_function */
1565 1.1 christos "R_PPC_VLE_SDA21_LO", /* name */
1566 1.1 christos FALSE, /* partial_inplace */
1567 1.1 christos 0, /* src_mask */
1568 1.1 christos 0, /* dst_mask */
1569 1.1 christos FALSE), /* pcrel_offset */
1570 1.1 christos
1571 1.1 christos /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1572 1.1 christos HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1573 1.1 christos 0, /* rightshift */
1574 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1575 1.1 christos 32, /* bitsize */
1576 1.1 christos FALSE, /* pc_relative */
1577 1.1 christos 0, /* bitpos */
1578 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
1579 1.1 christos bfd_elf_generic_reloc, /* special_function */
1580 1.1 christos "R_PPC_VLE_SDAREL_LO16A", /* name */
1581 1.1 christos FALSE, /* partial_inplace */
1582 1.1 christos 0, /* src_mask */
1583 1.1 christos 0x1f007ff, /* dst_mask */
1584 1.1 christos FALSE), /* pcrel_offset */
1585 1.1 christos
1586 1.1 christos /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1587 1.1 christos /* This reloc does nothing. */
1588 1.1 christos HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1589 1.1 christos 0, /* rightshift */
1590 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1591 1.1 christos 32, /* bitsize */
1592 1.1 christos FALSE, /* pc_relative */
1593 1.1 christos 0, /* bitpos */
1594 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
1595 1.1 christos bfd_elf_generic_reloc, /* special_function */
1596 1.1 christos "R_PPC_VLE_SDAREL_LO16D", /* name */
1597 1.1 christos FALSE, /* partial_inplace */
1598 1.1 christos 0, /* src_mask */
1599 1.1 christos 0x1f07ff, /* dst_mask */
1600 1.1 christos FALSE), /* pcrel_offset */
1601 1.1 christos
1602 1.1 christos /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1603 1.1 christos HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
1604 1.1 christos 0, /* rightshift */
1605 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1606 1.1 christos 32, /* bitsize */
1607 1.1 christos FALSE, /* pc_relative */
1608 1.1 christos 0, /* bitpos */
1609 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
1610 1.1 christos bfd_elf_generic_reloc, /* special_function */
1611 1.1 christos "R_PPC_VLE_SDAREL_HI16A", /* name */
1612 1.1 christos FALSE, /* partial_inplace */
1613 1.1 christos 0, /* src_mask */
1614 1.1 christos 0x1f007ff, /* dst_mask */
1615 1.1 christos FALSE), /* pcrel_offset */
1616 1.1 christos
1617 1.1 christos /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1618 1.1 christos HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
1619 1.1 christos 0, /* rightshift */
1620 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1621 1.1 christos 32, /* bitsize */
1622 1.1 christos FALSE, /* pc_relative */
1623 1.1 christos 0, /* bitpos */
1624 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
1625 1.1 christos bfd_elf_generic_reloc, /* special_function */
1626 1.1 christos "R_PPC_VLE_SDAREL_HI16D", /* name */
1627 1.1 christos FALSE, /* partial_inplace */
1628 1.1 christos 0, /* src_mask */
1629 1.1 christos 0x1f07ff, /* dst_mask */
1630 1.1 christos FALSE), /* pcrel_offset */
1631 1.1 christos
1632 1.1 christos /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1633 1.1 christos HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
1634 1.1 christos 0, /* rightshift */
1635 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1636 1.1 christos 32, /* bitsize */
1637 1.1 christos FALSE, /* pc_relative */
1638 1.1 christos 0, /* bitpos */
1639 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
1640 1.1 christos bfd_elf_generic_reloc, /* special_function */
1641 1.1 christos "R_PPC_VLE_SDAREL_HA16A", /* name */
1642 1.1 christos FALSE, /* partial_inplace */
1643 1.1 christos 0, /* src_mask */
1644 1.1 christos 0x1f007ff, /* dst_mask */
1645 1.1 christos FALSE), /* pcrel_offset */
1646 1.1 christos
1647 1.1 christos /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1648 1.1 christos HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
1649 1.1 christos 0, /* rightshift */
1650 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1651 1.1 christos 32, /* bitsize */
1652 1.1 christos FALSE, /* pc_relative */
1653 1.1 christos 0, /* bitpos */
1654 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
1655 1.1 christos bfd_elf_generic_reloc, /* special_function */
1656 1.1 christos "R_PPC_VLE_SDAREL_HA16D", /* name */
1657 1.1 christos FALSE, /* partial_inplace */
1658 1.1 christos 0, /* src_mask */
1659 1.1 christos 0x1f07ff, /* dst_mask */
1660 1.1 christos FALSE), /* pcrel_offset */
1661 1.1 christos
1662 1.1 christos HOWTO (R_PPC_IRELATIVE, /* type */
1663 1.1 christos 0, /* rightshift */
1664 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1665 1.1 christos 32, /* bitsize */
1666 1.1 christos FALSE, /* pc_relative */
1667 1.1 christos 0, /* bitpos */
1668 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
1669 1.1 christos bfd_elf_generic_reloc, /* special_function */
1670 1.1 christos "R_PPC_IRELATIVE", /* name */
1671 1.1 christos FALSE, /* partial_inplace */
1672 1.1 christos 0, /* src_mask */
1673 1.1 christos 0xffffffff, /* dst_mask */
1674 1.1 christos FALSE), /* pcrel_offset */
1675 1.1 christos
1676 1.1 christos /* A 16 bit relative relocation. */
1677 1.1 christos HOWTO (R_PPC_REL16, /* type */
1678 1.1 christos 0, /* rightshift */
1679 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1680 1.1 christos 16, /* bitsize */
1681 1.1 christos TRUE, /* pc_relative */
1682 1.1 christos 0, /* bitpos */
1683 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
1684 1.1 christos bfd_elf_generic_reloc, /* special_function */
1685 1.1 christos "R_PPC_REL16", /* name */
1686 1.1 christos FALSE, /* partial_inplace */
1687 1.1 christos 0, /* src_mask */
1688 1.1 christos 0xffff, /* dst_mask */
1689 1.1 christos TRUE), /* pcrel_offset */
1690 1.1 christos
1691 1.1 christos /* A 16 bit relative relocation without overflow. */
1692 1.1 christos HOWTO (R_PPC_REL16_LO, /* type */
1693 1.1 christos 0, /* rightshift */
1694 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1695 1.1 christos 16, /* bitsize */
1696 1.1 christos TRUE, /* pc_relative */
1697 1.1 christos 0, /* bitpos */
1698 1.1 christos complain_overflow_dont,/* complain_on_overflow */
1699 1.1 christos bfd_elf_generic_reloc, /* special_function */
1700 1.1 christos "R_PPC_REL16_LO", /* name */
1701 1.1 christos FALSE, /* partial_inplace */
1702 1.1 christos 0, /* src_mask */
1703 1.1 christos 0xffff, /* dst_mask */
1704 1.1 christos TRUE), /* pcrel_offset */
1705 1.1 christos
1706 1.1 christos /* The high order 16 bits of a relative address. */
1707 1.1 christos HOWTO (R_PPC_REL16_HI, /* type */
1708 1.1 christos 16, /* rightshift */
1709 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1710 1.1 christos 16, /* bitsize */
1711 1.1 christos TRUE, /* pc_relative */
1712 1.1 christos 0, /* bitpos */
1713 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1714 1.1 christos bfd_elf_generic_reloc, /* special_function */
1715 1.1 christos "R_PPC_REL16_HI", /* name */
1716 1.1 christos FALSE, /* partial_inplace */
1717 1.1 christos 0, /* src_mask */
1718 1.1 christos 0xffff, /* dst_mask */
1719 1.1 christos TRUE), /* pcrel_offset */
1720 1.1 christos
1721 1.1 christos /* The high order 16 bits of a relative address, plus 1 if the contents of
1722 1.1 christos the low 16 bits, treated as a signed number, is negative. */
1723 1.1 christos HOWTO (R_PPC_REL16_HA, /* type */
1724 1.1 christos 16, /* rightshift */
1725 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1726 1.1 christos 16, /* bitsize */
1727 1.1 christos TRUE, /* pc_relative */
1728 1.1 christos 0, /* bitpos */
1729 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1730 1.1 christos ppc_elf_addr16_ha_reloc, /* special_function */
1731 1.1 christos "R_PPC_REL16_HA", /* name */
1732 1.1 christos FALSE, /* partial_inplace */
1733 1.1 christos 0, /* src_mask */
1734 1.1 christos 0xffff, /* dst_mask */
1735 1.1 christos TRUE), /* pcrel_offset */
1736 1.1 christos
1737 1.1 christos /* GNU extension to record C++ vtable hierarchy. */
1738 1.1 christos HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1739 1.1 christos 0, /* rightshift */
1740 1.1 christos 0, /* size (0 = byte, 1 = short, 2 = long) */
1741 1.1 christos 0, /* bitsize */
1742 1.1 christos FALSE, /* pc_relative */
1743 1.1 christos 0, /* bitpos */
1744 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1745 1.1 christos NULL, /* special_function */
1746 1.1 christos "R_PPC_GNU_VTINHERIT", /* name */
1747 1.1 christos FALSE, /* partial_inplace */
1748 1.1 christos 0, /* src_mask */
1749 1.1 christos 0, /* dst_mask */
1750 1.1 christos FALSE), /* pcrel_offset */
1751 1.1 christos
1752 1.1 christos /* GNU extension to record C++ vtable member usage. */
1753 1.1 christos HOWTO (R_PPC_GNU_VTENTRY, /* type */
1754 1.1 christos 0, /* rightshift */
1755 1.1 christos 0, /* size (0 = byte, 1 = short, 2 = long) */
1756 1.1 christos 0, /* bitsize */
1757 1.1 christos FALSE, /* pc_relative */
1758 1.1 christos 0, /* bitpos */
1759 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1760 1.1 christos NULL, /* special_function */
1761 1.1 christos "R_PPC_GNU_VTENTRY", /* name */
1762 1.1 christos FALSE, /* partial_inplace */
1763 1.1 christos 0, /* src_mask */
1764 1.1 christos 0, /* dst_mask */
1765 1.1 christos FALSE), /* pcrel_offset */
1766 1.1 christos
1767 1.1 christos /* Phony reloc to handle AIX style TOC entries. */
1768 1.1 christos HOWTO (R_PPC_TOC16, /* type */
1769 1.1 christos 0, /* rightshift */
1770 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1771 1.1 christos 16, /* bitsize */
1772 1.1 christos FALSE, /* pc_relative */
1773 1.1 christos 0, /* bitpos */
1774 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1775 1.1 christos bfd_elf_generic_reloc, /* special_function */
1776 1.1 christos "R_PPC_TOC16", /* name */
1777 1.1 christos FALSE, /* partial_inplace */
1778 1.1 christos 0, /* src_mask */
1779 1.1 christos 0xffff, /* dst_mask */
1780 1.1 christos FALSE), /* pcrel_offset */
1781 1.1 christos };
1782 1.1 christos
1783 1.1 christos /* External 32-bit PPC structure for PRPSINFO. This structure is
1784 1.1 christos ABI-defined, thus we choose to use char arrays here in order to
1785 1.1 christos avoid dealing with different types in different architectures.
1786 1.1 christos
1787 1.1 christos The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while
1788 1.1 christos most non-PPC architectures use `short int'.
1789 1.1 christos
1790 1.1 christos This structure will ultimately be written in the corefile's note
1791 1.1 christos section, as the PRPSINFO. */
1792 1.1 christos
1793 1.1 christos struct elf_external_ppc_linux_prpsinfo32
1794 1.1 christos {
1795 1.1 christos char pr_state; /* Numeric process state. */
1796 1.1 christos char pr_sname; /* Char for pr_state. */
1797 1.1 christos char pr_zomb; /* Zombie. */
1798 1.1 christos char pr_nice; /* Nice val. */
1799 1.1 christos char pr_flag[4]; /* Flags. */
1800 1.1 christos char pr_uid[4];
1801 1.1 christos char pr_gid[4];
1802 1.1 christos char pr_pid[4];
1803 1.1 christos char pr_ppid[4];
1804 1.1 christos char pr_pgrp[4];
1805 1.1 christos char pr_sid[4];
1806 1.1 christos char pr_fname[16]; /* Filename of executable. */
1807 1.1 christos char pr_psargs[80]; /* Initial part of arg list. */
1808 1.1 christos };
1809 1.1 christos
1810 1.1 christos /* Helper macro to swap (properly handling endianess) things from the
1811 1.1 christos `elf_internal_prpsinfo' structure to the `elf_external_ppc_prpsinfo32'
1812 1.1 christos structure.
1813 1.1 christos
1814 1.1 christos Note that FROM should be a pointer, and TO should be the explicit type. */
1815 1.1 christos
1816 1.1 christos #define PPC_LINUX_PRPSINFO32_SWAP_FIELDS(abfd, from, to) \
1817 1.1 christos do \
1818 1.1 christos { \
1819 1.1 christos H_PUT_8 (abfd, from->pr_state, &to.pr_state); \
1820 1.1 christos H_PUT_8 (abfd, from->pr_sname, &to.pr_sname); \
1821 1.1 christos H_PUT_8 (abfd, from->pr_zomb, &to.pr_zomb); \
1822 1.1 christos H_PUT_8 (abfd, from->pr_nice, &to.pr_nice); \
1823 1.1 christos H_PUT_32 (abfd, from->pr_flag, to.pr_flag); \
1824 1.1 christos H_PUT_32 (abfd, from->pr_uid, to.pr_uid); \
1825 1.1 christos H_PUT_32 (abfd, from->pr_gid, to.pr_gid); \
1826 1.1 christos H_PUT_32 (abfd, from->pr_pid, to.pr_pid); \
1827 1.1 christos H_PUT_32 (abfd, from->pr_ppid, to.pr_ppid); \
1828 1.1 christos H_PUT_32 (abfd, from->pr_pgrp, to.pr_pgrp); \
1829 1.1 christos H_PUT_32 (abfd, from->pr_sid, to.pr_sid); \
1830 1.1 christos strncpy (to.pr_fname, from->pr_fname, sizeof (to.pr_fname)); \
1831 1.1 christos strncpy (to.pr_psargs, from->pr_psargs, sizeof (to.pr_psargs)); \
1832 1.1 christos } while (0)
1833 1.1 christos
1834 1.1 christos
1835 1.1 christos /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1837 1.1 christos
1838 1.1 christos static void
1839 1.1 christos ppc_elf_howto_init (void)
1840 1.1 christos {
1841 1.1 christos unsigned int i, type;
1842 1.1 christos
1843 1.1 christos for (i = 0;
1844 1.1 christos i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1845 1.1 christos i++)
1846 1.1 christos {
1847 1.1 christos type = ppc_elf_howto_raw[i].type;
1848 1.1 christos if (type >= (sizeof (ppc_elf_howto_table)
1849 1.1 christos / sizeof (ppc_elf_howto_table[0])))
1850 1.1 christos abort ();
1851 1.1 christos ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1852 1.1 christos }
1853 1.1 christos }
1854 1.1 christos
1855 1.1 christos static reloc_howto_type *
1856 1.1 christos ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1857 1.1 christos bfd_reloc_code_real_type code)
1858 1.1 christos {
1859 1.1 christos enum elf_ppc_reloc_type r;
1860 1.1 christos
1861 1.1 christos /* Initialize howto table if not already done. */
1862 1.1 christos if (!ppc_elf_howto_table[R_PPC_ADDR32])
1863 1.1 christos ppc_elf_howto_init ();
1864 1.1 christos
1865 1.1 christos switch (code)
1866 1.1 christos {
1867 1.1 christos default:
1868 1.1 christos return NULL;
1869 1.1 christos
1870 1.1 christos case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1871 1.1 christos case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1872 1.1 christos case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1873 1.1 christos case BFD_RELOC_PPC64_ADDR16_DS:
1874 1.1 christos case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1875 1.1 christos case BFD_RELOC_PPC64_ADDR16_LO_DS:
1876 1.1 christos case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1877 1.1 christos case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1878 1.1 christos case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1879 1.1 christos case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1880 1.1 christos case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1881 1.1 christos case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1882 1.1 christos case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1883 1.1 christos case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1884 1.1 christos case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1885 1.1 christos case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1886 1.1 christos case BFD_RELOC_PPC64_GOT16_DS:
1887 1.1 christos case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1888 1.1 christos case BFD_RELOC_PPC64_GOT16_LO_DS:
1889 1.1 christos case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1890 1.1 christos case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1891 1.1 christos case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1892 1.1 christos case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1893 1.1 christos case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1894 1.1 christos case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1895 1.1 christos case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1896 1.1 christos case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1897 1.1 christos case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1898 1.1 christos case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1899 1.1 christos case BFD_RELOC_PPC64_PLT16_LO_DS:
1900 1.1 christos case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1901 1.1 christos case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1902 1.1 christos case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1903 1.1 christos case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1904 1.1 christos case BFD_RELOC_PPC64_SECTOFF_DS:
1905 1.1 christos case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1906 1.1 christos case BFD_RELOC_PPC64_SECTOFF_LO_DS:
1907 1.1 christos case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1908 1.1 christos case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1909 1.1 christos case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1910 1.1 christos case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1911 1.1 christos case BFD_RELOC_PPC64_TOC16_DS:
1912 1.1 christos case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1913 1.1 christos case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1914 1.1 christos case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1915 1.1 christos case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1916 1.1 christos case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1917 1.1 christos case BFD_RELOC_PPC64_TPREL16_DS:
1918 1.1 christos case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1919 1.1 christos case BFD_RELOC_PPC64_TPREL16_LO_DS:
1920 1.1 christos case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1921 1.1 christos case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1922 1.1 christos case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1923 1.1 christos case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1924 1.1 christos case BFD_RELOC_PPC64_DTPREL16_DS:
1925 1.1 christos case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1926 1.1 christos case BFD_RELOC_PPC64_DTPREL16_LO_DS:
1927 1.1 christos case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1928 1.1 christos case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1929 1.1 christos case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1930 1.1 christos case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1931 1.1 christos case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1932 1.1 christos case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1933 1.1 christos case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1934 1.1 christos case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1935 1.1 christos case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1936 1.1 christos case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1937 1.1 christos case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1938 1.1 christos case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1939 1.1 christos case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1940 1.1 christos case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1941 1.1 christos case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1942 1.1 christos case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1943 1.1 christos case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1944 1.1 christos case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1945 1.1 christos case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1946 1.1 christos case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1947 1.1 christos case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1948 1.1 christos case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1949 1.1 christos case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1950 1.1 christos case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1951 1.1 christos case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1952 1.1 christos case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1953 1.1 christos case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1954 1.1 christos case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1955 1.1 christos case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1956 1.1 christos case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1957 1.1 christos case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1958 1.1 christos case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1959 1.1 christos case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1960 1.1 christos case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1961 1.1 christos case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1962 1.1 christos case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1963 1.1 christos case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1964 1.1 christos case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1965 1.1 christos case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1966 1.1 christos case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1967 1.1 christos case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1968 1.1 christos case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1969 1.1 christos case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1970 1.1 christos case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1971 1.1 christos case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1972 1.1 christos case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1973 1.1 christos case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1974 1.1 christos case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1975 1.1 christos r = R_PPC_VLE_SDAREL_LO16A;
1976 1.1 christos break;
1977 1.1 christos case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1978 1.1 christos r = R_PPC_VLE_SDAREL_LO16D;
1979 1.1 christos break;
1980 1.1 christos case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1981 1.1 christos r = R_PPC_VLE_SDAREL_HI16A;
1982 1.1 christos break;
1983 1.1 christos case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1984 1.1 christos r = R_PPC_VLE_SDAREL_HI16D;
1985 1.1 christos break;
1986 1.1 christos case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1987 1.1 christos r = R_PPC_VLE_SDAREL_HA16A;
1988 1.1 christos break;
1989 1.1 christos case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1990 1.1 christos r = R_PPC_VLE_SDAREL_HA16D;
1991 1.1 christos break;
1992 1.1 christos case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1993 1.1 christos case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1994 1.1 christos case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1995 1.1 christos case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1996 1.1 christos case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1997 1.1 christos case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1998 1.1 christos }
1999 1.1 christos
2000 1.1 christos return ppc_elf_howto_table[r];
2001 1.1 christos };
2002 1.1 christos
2003 1.1 christos static reloc_howto_type *
2004 1.1 christos ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2005 1.1 christos const char *r_name)
2006 1.1 christos {
2007 1.1 christos unsigned int i;
2008 1.1 christos
2009 1.1 christos for (i = 0;
2010 1.1 christos i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2011 1.1 christos i++)
2012 1.1 christos if (ppc_elf_howto_raw[i].name != NULL
2013 1.1 christos && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2014 1.1 christos return &ppc_elf_howto_raw[i];
2015 1.1 christos
2016 1.1 christos return NULL;
2017 1.1 christos }
2018 1.1 christos
2019 1.1 christos /* Set the howto pointer for a PowerPC ELF reloc. */
2020 1.1 christos
2021 1.1 christos static void
2022 1.1 christos ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
2023 1.1 christos arelent *cache_ptr,
2024 1.1 christos Elf_Internal_Rela *dst)
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 1.1 christos ppc_elf_howto_init ();
2029 1.1 christos
2030 1.1 christos BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
2031 1.1 christos cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
2032 1.1 christos
2033 1.1 christos /* Just because the above assert didn't trigger doesn't mean that
2034 1.1 christos ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2035 1.1 christos if (!cache_ptr->howto)
2036 1.1 christos {
2037 1.1 christos (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2038 1.1 christos abfd, ELF32_R_TYPE (dst->r_info));
2039 1.1 christos bfd_set_error (bfd_error_bad_value);
2040 1.1 christos
2041 1.1 christos cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2042 1.1 christos }
2043 1.1 christos }
2044 1.1 christos
2045 1.1 christos /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2046 1.1 christos
2047 1.1 christos static bfd_reloc_status_type
2048 1.1 christos ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
2049 1.1 christos arelent *reloc_entry,
2050 1.1 christos asymbol *symbol,
2051 1.1 christos void *data ATTRIBUTE_UNUSED,
2052 1.1 christos asection *input_section,
2053 1.1 christos bfd *output_bfd,
2054 1.1 christos char **error_message ATTRIBUTE_UNUSED)
2055 1.1 christos {
2056 1.1 christos bfd_vma relocation;
2057 1.1 christos
2058 1.1 christos if (output_bfd != NULL)
2059 1.1 christos {
2060 1.1 christos reloc_entry->address += input_section->output_offset;
2061 1.1 christos return bfd_reloc_ok;
2062 1.1 christos }
2063 1.1 christos
2064 1.1 christos if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
2065 1.1 christos return bfd_reloc_outofrange;
2066 1.1 christos
2067 1.1 christos if (bfd_is_com_section (symbol->section))
2068 1.1 christos relocation = 0;
2069 1.1 christos else
2070 1.1 christos relocation = symbol->value;
2071 1.1 christos
2072 1.1 christos relocation += symbol->section->output_section->vma;
2073 1.1 christos relocation += symbol->section->output_offset;
2074 1.1 christos relocation += reloc_entry->addend;
2075 1.1 christos if (reloc_entry->howto->pc_relative)
2076 1.1 christos relocation -= reloc_entry->address;
2077 1.1 christos
2078 1.1 christos reloc_entry->addend += (relocation & 0x8000) << 1;
2079 1.1 christos
2080 1.1 christos return bfd_reloc_continue;
2081 1.1 christos }
2082 1.1 christos
2083 1.1 christos static bfd_reloc_status_type
2084 1.1 christos ppc_elf_unhandled_reloc (bfd *abfd,
2085 1.1 christos arelent *reloc_entry,
2086 1.1 christos asymbol *symbol,
2087 1.1 christos void *data,
2088 1.1 christos asection *input_section,
2089 1.1 christos bfd *output_bfd,
2090 1.1 christos char **error_message)
2091 1.1 christos {
2092 1.1 christos /* If this is a relocatable link (output_bfd test tells us), just
2093 1.1 christos call the generic function. Any adjustment will be done at final
2094 1.1 christos link time. */
2095 1.1 christos if (output_bfd != NULL)
2096 1.1 christos return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2097 1.1 christos input_section, output_bfd, error_message);
2098 1.1 christos
2099 1.1 christos if (error_message != NULL)
2100 1.1 christos {
2101 1.1 christos static char buf[60];
2102 1.1 christos sprintf (buf, _("generic linker can't handle %s"),
2103 1.1 christos reloc_entry->howto->name);
2104 1.1 christos *error_message = buf;
2105 1.1 christos }
2106 1.1 christos return bfd_reloc_dangerous;
2107 1.1 christos }
2108 1.1 christos
2109 1.1 christos /* Sections created by the linker. */
2111 1.1 christos
2112 1.1 christos typedef struct elf_linker_section
2113 1.1 christos {
2114 1.1 christos /* Pointer to the bfd section. */
2115 1.1 christos asection *section;
2116 1.1 christos /* Section name. */
2117 1.1 christos const char *name;
2118 1.1 christos /* Associated bss section name. */
2119 1.1 christos const char *bss_name;
2120 1.1 christos /* Associated symbol name. */
2121 1.1 christos const char *sym_name;
2122 1.1 christos /* Associated symbol. */
2123 1.1 christos struct elf_link_hash_entry *sym;
2124 1.1 christos } elf_linker_section_t;
2125 1.1 christos
2126 1.1 christos /* Linked list of allocated pointer entries. This hangs off of the
2127 1.1 christos symbol lists, and provides allows us to return different pointers,
2128 1.1 christos based on different addend's. */
2129 1.1 christos
2130 1.1 christos typedef struct elf_linker_section_pointers
2131 1.1 christos {
2132 1.1 christos /* next allocated pointer for this symbol */
2133 1.1 christos struct elf_linker_section_pointers *next;
2134 1.1 christos /* offset of pointer from beginning of section */
2135 1.1 christos bfd_vma offset;
2136 1.1 christos /* addend used */
2137 1.1 christos bfd_vma addend;
2138 1.1 christos /* which linker section this is */
2139 1.1 christos elf_linker_section_t *lsect;
2140 1.1 christos } elf_linker_section_pointers_t;
2141 1.1 christos
2142 1.1 christos struct ppc_elf_obj_tdata
2143 1.1 christos {
2144 1.1 christos struct elf_obj_tdata elf;
2145 1.1 christos
2146 1.1 christos /* A mapping from local symbols to offsets into the various linker
2147 1.1 christos sections added. This is index by the symbol index. */
2148 1.1 christos elf_linker_section_pointers_t **linker_section_pointers;
2149 1.1 christos
2150 1.1 christos /* Flags used to auto-detect plt type. */
2151 1.1 christos unsigned int makes_plt_call : 1;
2152 1.1 christos unsigned int has_rel16 : 1;
2153 1.1 christos };
2154 1.1 christos
2155 1.1 christos #define ppc_elf_tdata(bfd) \
2156 1.1 christos ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2157 1.1 christos
2158 1.1 christos #define elf_local_ptr_offsets(bfd) \
2159 1.1 christos (ppc_elf_tdata (bfd)->linker_section_pointers)
2160 1.1 christos
2161 1.1 christos #define is_ppc_elf(bfd) \
2162 1.1 christos (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2163 1.1 christos && elf_object_id (bfd) == PPC32_ELF_DATA)
2164 1.1 christos
2165 1.1 christos /* Override the generic function because we store some extras. */
2166 1.1 christos
2167 1.1 christos static bfd_boolean
2168 1.1 christos ppc_elf_mkobject (bfd *abfd)
2169 1.1 christos {
2170 1.1 christos return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2171 1.1 christos PPC32_ELF_DATA);
2172 1.1 christos }
2173 1.1 christos
2174 1.1 christos /* Fix bad default arch selected for a 32 bit input bfd when the
2175 1.1 christos default is 64 bit. */
2176 1.1 christos
2177 1.1 christos static bfd_boolean
2178 1.1 christos ppc_elf_object_p (bfd *abfd)
2179 1.1 christos {
2180 1.1 christos if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
2181 1.1 christos {
2182 1.1 christos Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2183 1.1 christos
2184 1.1 christos if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2185 1.1 christos {
2186 1.1 christos /* Relies on arch after 64 bit default being 32 bit default. */
2187 1.1 christos abfd->arch_info = abfd->arch_info->next;
2188 1.1 christos BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2189 1.1 christos }
2190 1.1 christos }
2191 1.1 christos return TRUE;
2192 1.1 christos }
2193 1.1 christos
2194 1.1 christos /* Function to set whether a module needs the -mrelocatable bit set. */
2195 1.1 christos
2196 1.1 christos static bfd_boolean
2197 1.1 christos ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2198 1.1 christos {
2199 1.1 christos BFD_ASSERT (!elf_flags_init (abfd)
2200 1.1 christos || elf_elfheader (abfd)->e_flags == flags);
2201 1.1 christos
2202 1.1 christos elf_elfheader (abfd)->e_flags = flags;
2203 1.1 christos elf_flags_init (abfd) = TRUE;
2204 1.1 christos return TRUE;
2205 1.1 christos }
2206 1.1 christos
2207 1.1 christos /* Support for core dump NOTE sections. */
2208 1.1 christos
2209 1.1 christos static bfd_boolean
2210 1.1 christos ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2211 1.1 christos {
2212 1.1 christos int offset;
2213 1.1 christos unsigned int size;
2214 1.1 christos
2215 1.1 christos switch (note->descsz)
2216 1.1 christos {
2217 1.1 christos default:
2218 1.1 christos return FALSE;
2219 1.1 christos
2220 1.1 christos case 268: /* Linux/PPC. */
2221 1.1 christos /* pr_cursig */
2222 1.1 christos elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2223 1.1 christos
2224 1.1 christos /* pr_pid */
2225 1.1 christos elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2226 1.1 christos
2227 1.1 christos /* pr_reg */
2228 1.1 christos offset = 72;
2229 1.1 christos size = 192;
2230 1.1 christos
2231 1.1 christos break;
2232 1.1 christos }
2233 1.1 christos
2234 1.1 christos /* Make a ".reg/999" section. */
2235 1.1 christos return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2236 1.1 christos size, note->descpos + offset);
2237 1.1 christos }
2238 1.1 christos
2239 1.1 christos static bfd_boolean
2240 1.1 christos ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2241 1.1 christos {
2242 1.1 christos switch (note->descsz)
2243 1.1 christos {
2244 1.1 christos default:
2245 1.1 christos return FALSE;
2246 1.1 christos
2247 1.1 christos case 128: /* Linux/PPC elf_prpsinfo. */
2248 1.1 christos elf_tdata (abfd)->core->pid
2249 1.1 christos = bfd_get_32 (abfd, note->descdata + 16);
2250 1.1 christos elf_tdata (abfd)->core->program
2251 1.1 christos = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2252 1.1 christos elf_tdata (abfd)->core->command
2253 1.1 christos = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2254 1.1 christos }
2255 1.1 christos
2256 1.1 christos /* Note that for some reason, a spurious space is tacked
2257 1.1 christos onto the end of the args in some (at least one anyway)
2258 1.1 christos implementations, so strip it off if it exists. */
2259 1.1 christos
2260 1.1 christos {
2261 1.1 christos char *command = elf_tdata (abfd)->core->command;
2262 1.1 christos int n = strlen (command);
2263 1.1 christos
2264 1.1 christos if (0 < n && command[n - 1] == ' ')
2265 1.1 christos command[n - 1] = '\0';
2266 1.1 christos }
2267 1.1 christos
2268 1.1 christos return TRUE;
2269 1.1 christos }
2270 1.1 christos
2271 1.1 christos char *
2272 1.1 christos elfcore_write_ppc_linux_prpsinfo32 (bfd *abfd, char *buf, int *bufsiz,
2273 1.1 christos const struct elf_internal_linux_prpsinfo *prpsinfo)
2274 1.1 christos {
2275 1.1 christos struct elf_external_ppc_linux_prpsinfo32 data;
2276 1.1 christos
2277 1.1 christos memset (&data, 0, sizeof (data));
2278 1.1 christos PPC_LINUX_PRPSINFO32_SWAP_FIELDS (abfd, prpsinfo, data);
2279 1.1 christos
2280 1.1 christos return elfcore_write_note (abfd, buf, bufsiz,
2281 1.1 christos "CORE", NT_PRPSINFO, &data, sizeof (data));
2282 1.1 christos }
2283 1.1 christos
2284 1.1 christos static char *
2285 1.1 christos ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2286 1.1 christos {
2287 1.1 christos switch (note_type)
2288 1.1 christos {
2289 1.1 christos default:
2290 1.1 christos return NULL;
2291 1.1 christos
2292 1.1 christos case NT_PRPSINFO:
2293 1.1 christos {
2294 1.1 christos char data[128];
2295 1.1 christos va_list ap;
2296 1.1 christos
2297 1.1 christos va_start (ap, note_type);
2298 1.1 christos memset (data, 0, sizeof (data));
2299 1.1 christos strncpy (data + 32, va_arg (ap, const char *), 16);
2300 1.1 christos strncpy (data + 48, va_arg (ap, const char *), 80);
2301 1.1 christos va_end (ap);
2302 1.1 christos return elfcore_write_note (abfd, buf, bufsiz,
2303 1.1 christos "CORE", note_type, data, sizeof (data));
2304 1.1 christos }
2305 1.1 christos
2306 1.1 christos case NT_PRSTATUS:
2307 1.1 christos {
2308 1.1 christos char data[268];
2309 1.1 christos va_list ap;
2310 1.1 christos long pid;
2311 1.1 christos int cursig;
2312 1.1 christos const void *greg;
2313 1.1 christos
2314 1.1 christos va_start (ap, note_type);
2315 1.1 christos memset (data, 0, 72);
2316 1.1 christos pid = va_arg (ap, long);
2317 1.1 christos bfd_put_32 (abfd, pid, data + 24);
2318 1.1 christos cursig = va_arg (ap, int);
2319 1.1 christos bfd_put_16 (abfd, cursig, data + 12);
2320 1.1 christos greg = va_arg (ap, const void *);
2321 1.1 christos memcpy (data + 72, greg, 192);
2322 1.1 christos memset (data + 264, 0, 4);
2323 1.1 christos va_end (ap);
2324 1.1 christos return elfcore_write_note (abfd, buf, bufsiz,
2325 1.1 christos "CORE", note_type, data, sizeof (data));
2326 1.1 christos }
2327 1.1 christos }
2328 1.1 christos }
2329 1.1 christos
2330 1.1 christos static flagword
2331 1.1 christos ppc_elf_lookup_section_flags (char *flag_name)
2332 1.1 christos {
2333 1.1 christos
2334 1.1 christos if (!strcmp (flag_name, "SHF_PPC_VLE"))
2335 1.1 christos return SHF_PPC_VLE;
2336 1.1 christos
2337 1.1 christos return 0;
2338 1.1 christos }
2339 1.1 christos
2340 1.1 christos /* Add the VLE flag if required. */
2341 1.1 christos
2342 1.1 christos bfd_boolean
2343 1.1 christos ppc_elf_section_processing (bfd *abfd, Elf_Internal_Shdr *shdr)
2344 1.1 christos {
2345 1.1 christos if (bfd_get_mach (abfd) == bfd_mach_ppc_vle
2346 1.1 christos && (shdr->sh_flags & SHF_EXECINSTR) != 0)
2347 1.1 christos shdr->sh_flags |= SHF_PPC_VLE;
2348 1.1 christos
2349 1.1 christos return TRUE;
2350 1.1 christos }
2351 1.1 christos
2352 1.1 christos /* Return address for Ith PLT stub in section PLT, for relocation REL
2353 1.1 christos or (bfd_vma) -1 if it should not be included. */
2354 1.1 christos
2355 1.1 christos static bfd_vma
2356 1.1 christos ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2357 1.1 christos const asection *plt ATTRIBUTE_UNUSED,
2358 1.1 christos const arelent *rel)
2359 1.1 christos {
2360 1.1 christos return rel->address;
2361 1.1 christos }
2362 1.1 christos
2363 1.1 christos /* Handle a PowerPC specific section when reading an object file. This
2364 1.1 christos is called when bfd_section_from_shdr finds a section with an unknown
2365 1.1 christos type. */
2366 1.1 christos
2367 1.1 christos static bfd_boolean
2368 1.1 christos ppc_elf_section_from_shdr (bfd *abfd,
2369 1.1 christos Elf_Internal_Shdr *hdr,
2370 1.1 christos const char *name,
2371 1.1 christos int shindex)
2372 1.1 christos {
2373 1.1 christos asection *newsect;
2374 1.1 christos flagword flags;
2375 1.1 christos
2376 1.1 christos if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2377 1.1 christos return FALSE;
2378 1.1 christos
2379 1.1 christos newsect = hdr->bfd_section;
2380 1.1 christos flags = bfd_get_section_flags (abfd, newsect);
2381 1.1 christos if (hdr->sh_flags & SHF_EXCLUDE)
2382 1.1 christos flags |= SEC_EXCLUDE;
2383 1.1 christos
2384 1.1 christos if (hdr->sh_type == SHT_ORDERED)
2385 1.1 christos flags |= SEC_SORT_ENTRIES;
2386 1.1 christos
2387 1.1 christos bfd_set_section_flags (abfd, newsect, flags);
2388 1.1 christos return TRUE;
2389 1.1 christos }
2390 1.1 christos
2391 1.1 christos /* Set up any other section flags and such that may be necessary. */
2392 1.1 christos
2393 1.1 christos static bfd_boolean
2394 1.1 christos ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2395 1.1 christos Elf_Internal_Shdr *shdr,
2396 1.1 christos asection *asect)
2397 1.1 christos {
2398 1.1 christos if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2399 1.1 christos shdr->sh_type = SHT_ORDERED;
2400 1.1 christos
2401 1.1 christos return TRUE;
2402 1.1 christos }
2403 1.1 christos
2404 1.1 christos /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2405 1.1 christos need to bump up the number of section headers. */
2406 1.1 christos
2407 1.1 christos static int
2408 1.1 christos ppc_elf_additional_program_headers (bfd *abfd,
2409 1.1 christos struct bfd_link_info *info ATTRIBUTE_UNUSED)
2410 1.1 christos {
2411 1.1 christos asection *s;
2412 1.1 christos int ret = 0;
2413 1.1 christos
2414 1.1 christos s = bfd_get_section_by_name (abfd, ".sbss2");
2415 1.1 christos if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2416 1.1 christos ++ret;
2417 1.1 christos
2418 1.1 christos s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
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 return ret;
2423 1.1 christos }
2424 1.1 christos
2425 1.1 christos /* Modify the segment map for VLE executables. */
2426 1.1 christos
2427 1.1 christos bfd_boolean
2428 1.1 christos ppc_elf_modify_segment_map (bfd *abfd,
2429 1.1 christos struct bfd_link_info *info ATTRIBUTE_UNUSED)
2430 1.1 christos {
2431 1.1 christos struct elf_segment_map *m, *n;
2432 1.1 christos bfd_size_type amt;
2433 1.1 christos unsigned int j, k;
2434 1.1 christos bfd_boolean sect0_vle, sectj_vle;
2435 1.1 christos
2436 1.1 christos /* At this point in the link, output sections have already been sorted by
2437 1.1 christos LMA and assigned to segments. All that is left to do is to ensure
2438 1.1 christos there is no mixing of VLE & non-VLE sections in a text segment.
2439 1.1 christos If we find that case, we split the segment.
2440 1.1 christos We maintain the original output section order. */
2441 1.1 christos
2442 1.1 christos for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2443 1.1 christos {
2444 1.1 christos if (m->count == 0)
2445 1.1 christos continue;
2446 1.1 christos
2447 1.1 christos sect0_vle = (elf_section_flags (m->sections[0]) & SHF_PPC_VLE) != 0;
2448 1.1 christos for (j = 1; j < m->count; ++j)
2449 1.1 christos {
2450 1.1 christos sectj_vle = (elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0;
2451 1.1 christos
2452 1.1 christos if (sectj_vle != sect0_vle)
2453 1.1 christos break;
2454 1.1 christos }
2455 1.1 christos if (j >= m->count)
2456 1.1 christos continue;
2457 1.1 christos
2458 1.1 christos /* sections 0..j-1 stay in this (current) segment,
2459 1.1 christos the remainder are put in a new segment.
2460 1.1 christos The scan resumes with the new segment. */
2461 1.1 christos
2462 1.1 christos /* Fix the new segment. */
2463 1.1 christos amt = sizeof (struct elf_segment_map);
2464 1.1 christos amt += (m->count - j - 1) * sizeof (asection *);
2465 1.1 christos n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2466 1.1 christos if (n == NULL)
2467 1.1 christos return FALSE;
2468 1.1 christos
2469 1.1 christos n->p_type = PT_LOAD;
2470 1.1 christos n->p_flags = PF_X | PF_R;
2471 1.1 christos if (sectj_vle)
2472 1.1 christos n->p_flags |= PF_PPC_VLE;
2473 1.1 christos n->count = m->count - j;
2474 1.1 christos for (k = 0; k < n->count; ++k)
2475 1.1 christos {
2476 1.1 christos n->sections[k] = m->sections[j+k];
2477 1.1 christos m->sections[j+k] = NULL;
2478 1.1 christos }
2479 1.1 christos n->next = m->next;
2480 1.1 christos m->next = n;
2481 1.1 christos
2482 1.1 christos /* Fix the current segment */
2483 1.1 christos m->count = j;
2484 1.1 christos }
2485 1.1 christos
2486 1.1 christos return TRUE;
2487 1.1 christos }
2488 1.1 christos
2489 1.1 christos /* Add extra PPC sections -- Note, for now, make .sbss2 and
2490 1.1 christos .PPC.EMB.sbss0 a normal section, and not a bss section so
2491 1.1 christos that the linker doesn't crater when trying to make more than
2492 1.1 christos 2 sections. */
2493 1.1 christos
2494 1.1 christos static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2495 1.1 christos {
2496 1.1 christos { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2497 1.1 christos { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2498 1.1 christos { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2499 1.1 christos { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2500 1.1 christos { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2501 1.1 christos { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2502 1.1 christos { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
2503 1.1 christos { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2504 1.1 christos { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2505 1.1 christos { NULL, 0, 0, 0, 0 }
2506 1.1 christos };
2507 1.1 christos
2508 1.1 christos /* This is what we want for new plt/got. */
2509 1.1 christos static struct bfd_elf_special_section ppc_alt_plt =
2510 1.1 christos { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2511 1.1 christos
2512 1.1 christos static const struct bfd_elf_special_section *
2513 1.1 christos ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2514 1.1 christos {
2515 1.1 christos const struct bfd_elf_special_section *ssect;
2516 1.1 christos
2517 1.1 christos /* See if this is one of the special sections. */
2518 1.1 christos if (sec->name == NULL)
2519 1.1 christos return NULL;
2520 1.1 christos
2521 1.1 christos ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2522 1.1 christos sec->use_rela_p);
2523 1.1 christos if (ssect != NULL)
2524 1.1 christos {
2525 1.1 christos if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2526 1.1 christos ssect = &ppc_alt_plt;
2527 1.1 christos return ssect;
2528 1.1 christos }
2529 1.1 christos
2530 1.1 christos return _bfd_elf_get_sec_type_attr (abfd, sec);
2531 1.1 christos }
2532 1.1 christos
2533 1.1 christos /* Very simple linked list structure for recording apuinfo values. */
2535 1.1 christos typedef struct apuinfo_list
2536 1.1 christos {
2537 1.1 christos struct apuinfo_list *next;
2538 1.1 christos unsigned long value;
2539 1.1 christos }
2540 1.1 christos apuinfo_list;
2541 1.1 christos
2542 1.1 christos static apuinfo_list *head;
2543 1.1 christos static bfd_boolean apuinfo_set;
2544 1.1 christos
2545 1.1 christos static void
2546 1.1 christos apuinfo_list_init (void)
2547 1.1 christos {
2548 1.1 christos head = NULL;
2549 1.1 christos apuinfo_set = FALSE;
2550 1.1 christos }
2551 1.1 christos
2552 1.1 christos static void
2553 1.1 christos apuinfo_list_add (unsigned long value)
2554 1.1 christos {
2555 1.1 christos apuinfo_list *entry = head;
2556 1.1 christos
2557 1.1 christos while (entry != NULL)
2558 1.1 christos {
2559 1.1 christos if (entry->value == value)
2560 1.1 christos return;
2561 1.1 christos entry = entry->next;
2562 1.1 christos }
2563 1.1 christos
2564 1.1 christos entry = bfd_malloc (sizeof (* entry));
2565 1.1 christos if (entry == NULL)
2566 1.1 christos return;
2567 1.1 christos
2568 1.1 christos entry->value = value;
2569 1.1 christos entry->next = head;
2570 1.1 christos head = entry;
2571 1.1 christos }
2572 1.1 christos
2573 1.1 christos static unsigned
2574 1.1 christos apuinfo_list_length (void)
2575 1.1 christos {
2576 1.1 christos apuinfo_list *entry;
2577 1.1 christos unsigned long count;
2578 1.1 christos
2579 1.1 christos for (entry = head, count = 0;
2580 1.1 christos entry;
2581 1.1 christos entry = entry->next)
2582 1.1 christos ++ count;
2583 1.1 christos
2584 1.1 christos return count;
2585 1.1 christos }
2586 1.1 christos
2587 1.1 christos static inline unsigned long
2588 1.1 christos apuinfo_list_element (unsigned long number)
2589 1.1 christos {
2590 1.1 christos apuinfo_list * entry;
2591 1.1 christos
2592 1.1 christos for (entry = head;
2593 1.1 christos entry && number --;
2594 1.1 christos entry = entry->next)
2595 1.1 christos ;
2596 1.1 christos
2597 1.1 christos return entry ? entry->value : 0;
2598 1.1 christos }
2599 1.1 christos
2600 1.1 christos static void
2601 1.1 christos apuinfo_list_finish (void)
2602 1.1 christos {
2603 1.1 christos apuinfo_list *entry;
2604 1.1 christos
2605 1.1 christos for (entry = head; entry;)
2606 1.1 christos {
2607 1.1 christos apuinfo_list *next = entry->next;
2608 1.1 christos free (entry);
2609 1.1 christos entry = next;
2610 1.1 christos }
2611 1.1 christos
2612 1.1 christos head = NULL;
2613 1.1 christos }
2614 1.1 christos
2615 1.1 christos #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2616 1.1 christos #define APUINFO_LABEL "APUinfo"
2617 1.1 christos
2618 1.1 christos /* Scan the input BFDs and create a linked list of
2619 1.1 christos the APUinfo values that will need to be emitted. */
2620 1.1 christos
2621 1.1 christos static void
2622 1.1 christos ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2623 1.1 christos {
2624 1.1 christos bfd *ibfd;
2625 1.1 christos asection *asec;
2626 1.1 christos char *buffer = NULL;
2627 1.1 christos bfd_size_type largest_input_size = 0;
2628 1.1 christos unsigned i;
2629 1.1 christos unsigned long length;
2630 1.1 christos const char *error_message = NULL;
2631 1.1 christos
2632 1.1 christos if (link_info == NULL)
2633 1.1 christos return;
2634 1.1 christos
2635 1.1 christos apuinfo_list_init ();
2636 1.1 christos
2637 1.1 christos /* Read in the input sections contents. */
2638 1.1 christos for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2639 1.1 christos {
2640 1.1 christos unsigned long datum;
2641 1.1 christos
2642 1.1 christos asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2643 1.1 christos if (asec == NULL)
2644 1.1 christos continue;
2645 1.1 christos
2646 1.1 christos error_message = _("corrupt %s section in %B");
2647 1.1 christos length = asec->size;
2648 1.1 christos if (length < 20)
2649 1.1 christos goto fail;
2650 1.1 christos
2651 1.1 christos apuinfo_set = TRUE;
2652 1.1 christos if (largest_input_size < asec->size)
2653 1.1 christos {
2654 1.1 christos if (buffer)
2655 1.1 christos free (buffer);
2656 1.1 christos largest_input_size = asec->size;
2657 1.1 christos buffer = bfd_malloc (largest_input_size);
2658 1.1 christos if (!buffer)
2659 1.1 christos return;
2660 1.1 christos }
2661 1.1 christos
2662 1.1 christos if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2663 1.1 christos || (bfd_bread (buffer, length, ibfd) != length))
2664 1.1 christos {
2665 1.1 christos error_message = _("unable to read in %s section from %B");
2666 1.1 christos goto fail;
2667 1.1 christos }
2668 1.1 christos
2669 1.1 christos /* Verify the contents of the header. Note - we have to
2670 1.1 christos extract the values this way in order to allow for a
2671 1.1 christos host whose endian-ness is different from the target. */
2672 1.1 christos datum = bfd_get_32 (ibfd, buffer);
2673 1.1 christos if (datum != sizeof APUINFO_LABEL)
2674 1.1 christos goto fail;
2675 1.1 christos
2676 1.1 christos datum = bfd_get_32 (ibfd, buffer + 8);
2677 1.1 christos if (datum != 0x2)
2678 1.1 christos goto fail;
2679 1.1 christos
2680 1.1 christos if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2681 1.1 christos goto fail;
2682 1.1 christos
2683 1.1 christos /* Get the number of bytes used for apuinfo entries. */
2684 1.1 christos datum = bfd_get_32 (ibfd, buffer + 4);
2685 1.1 christos if (datum + 20 != length)
2686 1.1 christos goto fail;
2687 1.1 christos
2688 1.1 christos /* Scan the apuinfo section, building a list of apuinfo numbers. */
2689 1.1 christos for (i = 0; i < datum; i += 4)
2690 1.1 christos apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2691 1.1 christos }
2692 1.1 christos
2693 1.1 christos error_message = NULL;
2694 1.1 christos
2695 1.1 christos if (apuinfo_set)
2696 1.1 christos {
2697 1.1 christos /* Compute the size of the output section. */
2698 1.1 christos unsigned num_entries = apuinfo_list_length ();
2699 1.1 christos
2700 1.1 christos /* Set the output section size, if it exists. */
2701 1.1 christos asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2702 1.1 christos
2703 1.1 christos if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2704 1.1 christos {
2705 1.1 christos ibfd = abfd;
2706 1.1 christos error_message = _("warning: unable to set size of %s section in %B");
2707 1.1 christos }
2708 1.1 christos }
2709 1.1 christos
2710 1.1 christos fail:
2711 1.1 christos if (buffer)
2712 1.1 christos free (buffer);
2713 1.1 christos
2714 1.1 christos if (error_message)
2715 1.1 christos (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2716 1.1 christos }
2717 1.1 christos
2718 1.1 christos /* Prevent the output section from accumulating the input sections'
2719 1.1 christos contents. We have already stored this in our linked list structure. */
2720 1.1 christos
2721 1.1 christos static bfd_boolean
2722 1.1 christos ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2723 1.1 christos struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2724 1.1 christos asection *asec,
2725 1.1 christos bfd_byte *contents ATTRIBUTE_UNUSED)
2726 1.1 christos {
2727 1.1 christos return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2728 1.1 christos }
2729 1.1 christos
2730 1.1 christos /* Finally we can generate the output section. */
2731 1.1 christos
2732 1.1 christos static void
2733 1.1 christos ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2734 1.1 christos {
2735 1.1 christos bfd_byte *buffer;
2736 1.1 christos asection *asec;
2737 1.1 christos unsigned i;
2738 1.1 christos unsigned num_entries;
2739 1.1 christos bfd_size_type length;
2740 1.1 christos
2741 1.1 christos asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2742 1.1 christos if (asec == NULL)
2743 1.1 christos return;
2744 1.1 christos
2745 1.1 christos if (!apuinfo_set)
2746 1.1 christos return;
2747 1.1 christos
2748 1.1 christos length = asec->size;
2749 1.1 christos if (length < 20)
2750 1.1 christos return;
2751 1.1 christos
2752 1.1 christos buffer = bfd_malloc (length);
2753 1.1 christos if (buffer == NULL)
2754 1.1 christos {
2755 1.1 christos (*_bfd_error_handler)
2756 1.1 christos (_("failed to allocate space for new APUinfo section."));
2757 1.1 christos return;
2758 1.1 christos }
2759 1.1 christos
2760 1.1 christos /* Create the apuinfo header. */
2761 1.1 christos num_entries = apuinfo_list_length ();
2762 1.1 christos bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2763 1.1 christos bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2764 1.1 christos bfd_put_32 (abfd, 0x2, buffer + 8);
2765 1.1 christos strcpy ((char *) buffer + 12, APUINFO_LABEL);
2766 1.1 christos
2767 1.1 christos length = 20;
2768 1.1 christos for (i = 0; i < num_entries; i++)
2769 1.1 christos {
2770 1.1 christos bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2771 1.1 christos length += 4;
2772 1.1 christos }
2773 1.1 christos
2774 1.1 christos if (length != asec->size)
2775 1.1 christos (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2776 1.1 christos
2777 1.1 christos if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2778 1.1 christos (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2779 1.1 christos
2780 1.1 christos free (buffer);
2781 1.1 christos
2782 1.1 christos apuinfo_list_finish ();
2783 1.1 christos }
2784 1.1 christos
2785 1.1 christos static bfd_boolean
2787 1.1 christos is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2788 1.1 christos {
2789 1.1 christos bfd_byte buf[GLINK_ENTRY_SIZE];
2790 1.1 christos
2791 1.1 christos if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2792 1.1 christos return FALSE;
2793 1.1 christos
2794 1.1 christos return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2795 1.1 christos && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2796 1.1 christos && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2797 1.1 christos && bfd_get_32 (abfd, buf + 12) == BCTR);
2798 1.1 christos }
2799 1.1 christos
2800 1.1 christos static bfd_boolean
2801 1.1 christos section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2802 1.1 christos {
2803 1.1 christos bfd_vma vma = *(bfd_vma *) ptr;
2804 1.1 christos return ((section->flags & SEC_ALLOC) != 0
2805 1.1 christos && section->vma <= vma
2806 1.1 christos && vma < section->vma + section->size);
2807 1.1 christos }
2808 1.1 christos
2809 1.1 christos static long
2810 1.1 christos ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2811 1.1 christos long dynsymcount, asymbol **dynsyms,
2812 1.1 christos asymbol **ret)
2813 1.1 christos {
2814 1.1 christos bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2815 1.1 christos asection *plt, *relplt, *dynamic, *glink;
2816 1.1 christos bfd_vma glink_vma = 0;
2817 1.1 christos bfd_vma resolv_vma = 0;
2818 1.1 christos bfd_vma stub_vma;
2819 1.1 christos asymbol *s;
2820 1.1 christos arelent *p;
2821 1.1 christos long count, i;
2822 1.1 christos size_t size;
2823 1.1 christos char *names;
2824 1.1 christos bfd_byte buf[4];
2825 1.1 christos
2826 1.1 christos *ret = NULL;
2827 1.1 christos
2828 1.1 christos if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2829 1.1 christos return 0;
2830 1.1 christos
2831 1.1 christos if (dynsymcount <= 0)
2832 1.1 christos return 0;
2833 1.1 christos
2834 1.1 christos relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2835 1.1 christos if (relplt == NULL)
2836 1.1 christos return 0;
2837 1.1 christos
2838 1.1 christos plt = bfd_get_section_by_name (abfd, ".plt");
2839 1.1 christos if (plt == NULL)
2840 1.1 christos return 0;
2841 1.1 christos
2842 1.1 christos /* Call common code to handle old-style executable PLTs. */
2843 1.1 christos if (elf_section_flags (plt) & SHF_EXECINSTR)
2844 1.1 christos return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2845 1.1 christos dynsymcount, dynsyms, ret);
2846 1.1 christos
2847 1.1 christos /* If this object was prelinked, the prelinker stored the address
2848 1.1 christos of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2849 1.1 christos dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2850 1.1 christos if (dynamic != NULL)
2851 1.1 christos {
2852 1.1 christos bfd_byte *dynbuf, *extdyn, *extdynend;
2853 1.1 christos size_t extdynsize;
2854 1.1 christos void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2855 1.1 christos
2856 1.1 christos if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2857 1.1 christos return -1;
2858 1.1 christos
2859 1.1 christos extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2860 1.1 christos swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2861 1.1 christos
2862 1.1 christos extdyn = dynbuf;
2863 1.1 christos extdynend = extdyn + dynamic->size;
2864 1.1 christos for (; extdyn < extdynend; extdyn += extdynsize)
2865 1.1 christos {
2866 1.1 christos Elf_Internal_Dyn dyn;
2867 1.1 christos (*swap_dyn_in) (abfd, extdyn, &dyn);
2868 1.1 christos
2869 1.1 christos if (dyn.d_tag == DT_NULL)
2870 1.1 christos break;
2871 1.1 christos
2872 1.1 christos if (dyn.d_tag == DT_PPC_GOT)
2873 1.1 christos {
2874 1.1 christos unsigned int g_o_t = dyn.d_un.d_val;
2875 1.1 christos asection *got = bfd_get_section_by_name (abfd, ".got");
2876 1.1 christos if (got != NULL
2877 1.1 christos && bfd_get_section_contents (abfd, got, buf,
2878 1.1 christos g_o_t - got->vma + 4, 4))
2879 1.1 christos glink_vma = bfd_get_32 (abfd, buf);
2880 1.1 christos break;
2881 1.1 christos }
2882 1.1 christos }
2883 1.1 christos free (dynbuf);
2884 1.1 christos }
2885 1.1 christos
2886 1.1 christos /* Otherwise we read the first plt entry. */
2887 1.1 christos if (glink_vma == 0)
2888 1.1 christos {
2889 1.1 christos if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2890 1.1 christos glink_vma = bfd_get_32 (abfd, buf);
2891 1.1 christos }
2892 1.1 christos
2893 1.1 christos if (glink_vma == 0)
2894 1.1 christos return 0;
2895 1.1 christos
2896 1.1 christos /* The .glink section usually does not survive the final
2897 1.1 christos link; search for the section (usually .text) where the
2898 1.1 christos glink stubs now reside. */
2899 1.1 christos glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2900 1.1 christos if (glink == NULL)
2901 1.1 christos return 0;
2902 1.1 christos
2903 1.1 christos /* Determine glink PLT resolver by reading the relative branch
2904 1.1 christos from the first glink stub. */
2905 1.1 christos if (bfd_get_section_contents (abfd, glink, buf,
2906 1.1 christos glink_vma - glink->vma, 4))
2907 1.1 christos {
2908 1.1 christos unsigned int insn = bfd_get_32 (abfd, buf);
2909 1.1 christos
2910 1.1 christos /* The first glink stub may either branch to the resolver ... */
2911 1.1 christos insn ^= B;
2912 1.1 christos if ((insn & ~0x3fffffc) == 0)
2913 1.1 christos resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2914 1.1 christos
2915 1.1 christos /* ... or fall through a bunch of NOPs. */
2916 1.1 christos else if ((insn ^ B ^ NOP) == 0)
2917 1.1 christos for (i = 4;
2918 1.1 christos bfd_get_section_contents (abfd, glink, buf,
2919 1.1 christos glink_vma - glink->vma + i, 4);
2920 1.1 christos i += 4)
2921 1.1 christos if (bfd_get_32 (abfd, buf) != NOP)
2922 1.1 christos {
2923 1.1 christos resolv_vma = glink_vma + i;
2924 1.1 christos break;
2925 1.1 christos }
2926 1.1 christos }
2927 1.1 christos
2928 1.1 christos count = relplt->size / sizeof (Elf32_External_Rela);
2929 1.1 christos stub_vma = glink_vma - (bfd_vma) count * 16;
2930 1.1 christos /* If the stubs are those for -shared/-pie then we might have
2931 1.1 christos multiple stubs for each plt entry. If that is the case then
2932 1.1 christos there is no way to associate stubs with their plt entries short
2933 1.1 christos of figuring out the GOT pointer value used in the stub. */
2934 1.1 christos if (!is_nonpic_glink_stub (abfd, glink,
2935 1.1 christos glink_vma - GLINK_ENTRY_SIZE - glink->vma))
2936 1.1 christos return 0;
2937 1.1 christos
2938 1.1 christos slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2939 1.1 christos if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2940 1.1 christos return -1;
2941 1.1 christos
2942 1.1 christos size = count * sizeof (asymbol);
2943 1.1 christos p = relplt->relocation;
2944 1.1 christos for (i = 0; i < count; i++, p++)
2945 1.1 christos {
2946 1.1 christos size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2947 1.1 christos if (p->addend != 0)
2948 1.1 christos size += sizeof ("+0x") - 1 + 8;
2949 1.1 christos }
2950 1.1 christos
2951 1.1 christos size += sizeof (asymbol) + sizeof ("__glink");
2952 1.1 christos
2953 1.1 christos if (resolv_vma)
2954 1.1 christos size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2955 1.1 christos
2956 1.1 christos s = *ret = bfd_malloc (size);
2957 1.1 christos if (s == NULL)
2958 1.1 christos return -1;
2959 1.1 christos
2960 1.1 christos names = (char *) (s + count + 1 + (resolv_vma != 0));
2961 1.1 christos p = relplt->relocation;
2962 1.1 christos for (i = 0; i < count; i++, p++)
2963 1.1 christos {
2964 1.1 christos size_t len;
2965 1.1 christos
2966 1.1 christos *s = **p->sym_ptr_ptr;
2967 1.1 christos /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2968 1.1 christos we are defining a symbol, ensure one of them is set. */
2969 1.1 christos if ((s->flags & BSF_LOCAL) == 0)
2970 1.1 christos s->flags |= BSF_GLOBAL;
2971 1.1 christos s->flags |= BSF_SYNTHETIC;
2972 1.1 christos s->section = glink;
2973 1.1 christos s->value = stub_vma - glink->vma;
2974 1.1 christos s->name = names;
2975 1.1 christos s->udata.p = NULL;
2976 1.1 christos len = strlen ((*p->sym_ptr_ptr)->name);
2977 1.1 christos memcpy (names, (*p->sym_ptr_ptr)->name, len);
2978 1.1 christos names += len;
2979 1.1 christos if (p->addend != 0)
2980 1.1 christos {
2981 1.1 christos memcpy (names, "+0x", sizeof ("+0x") - 1);
2982 1.1 christos names += sizeof ("+0x") - 1;
2983 1.1 christos bfd_sprintf_vma (abfd, names, p->addend);
2984 1.1 christos names += strlen (names);
2985 1.1 christos }
2986 1.1 christos memcpy (names, "@plt", sizeof ("@plt"));
2987 1.1 christos names += sizeof ("@plt");
2988 1.1 christos ++s;
2989 1.1 christos stub_vma += 16;
2990 1.1 christos }
2991 1.1 christos
2992 1.1 christos /* Add a symbol at the start of the glink branch table. */
2993 1.1 christos memset (s, 0, sizeof *s);
2994 1.1 christos s->the_bfd = abfd;
2995 1.1 christos s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2996 1.1 christos s->section = glink;
2997 1.1 christos s->value = glink_vma - glink->vma;
2998 1.1 christos s->name = names;
2999 1.1 christos memcpy (names, "__glink", sizeof ("__glink"));
3000 1.1 christos names += sizeof ("__glink");
3001 1.1 christos s++;
3002 1.1 christos count++;
3003 1.1 christos
3004 1.1 christos if (resolv_vma)
3005 1.1 christos {
3006 1.1 christos /* Add a symbol for the glink PLT resolver. */
3007 1.1 christos memset (s, 0, sizeof *s);
3008 1.1 christos s->the_bfd = abfd;
3009 1.1 christos s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3010 1.1 christos s->section = glink;
3011 1.1 christos s->value = resolv_vma - glink->vma;
3012 1.1 christos s->name = names;
3013 1.1 christos memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3014 1.1 christos names += sizeof ("__glink_PLTresolve");
3015 1.1 christos s++;
3016 1.1 christos count++;
3017 1.1 christos }
3018 1.1 christos
3019 1.1 christos return count;
3020 1.1 christos }
3021 1.1 christos
3022 1.1 christos /* The following functions are specific to the ELF linker, while
3024 1.1 christos functions above are used generally. They appear in this file more
3025 1.1 christos or less in the order in which they are called. eg.
3026 1.1 christos ppc_elf_check_relocs is called early in the link process,
3027 1.1 christos ppc_elf_finish_dynamic_sections is one of the last functions
3028 1.1 christos called. */
3029 1.1 christos
3030 1.1 christos /* Track PLT entries needed for a given symbol. We might need more
3031 1.1 christos than one glink entry per symbol when generating a pic binary. */
3032 1.1 christos struct plt_entry
3033 1.1 christos {
3034 1.1 christos struct plt_entry *next;
3035 1.1 christos
3036 1.1 christos /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3037 1.1 christos This field stores the offset into .got2 used to initialise the
3038 1.1 christos GOT pointer reg. It will always be at least 32768. (Current
3039 1.1 christos gcc always uses an offset of 32768, but ld -r will pack .got2
3040 1.1 christos sections together resulting in larger offsets). */
3041 1.1 christos bfd_vma addend;
3042 1.1 christos
3043 1.1 christos /* The .got2 section. */
3044 1.1 christos asection *sec;
3045 1.1 christos
3046 1.1 christos /* PLT refcount or offset. */
3047 1.1 christos union
3048 1.1 christos {
3049 1.1 christos bfd_signed_vma refcount;
3050 1.1 christos bfd_vma offset;
3051 1.1 christos } plt;
3052 1.1 christos
3053 1.1 christos /* .glink stub offset. */
3054 1.1 christos bfd_vma glink_offset;
3055 1.1 christos };
3056 1.1 christos
3057 1.1 christos /* Of those relocs that might be copied as dynamic relocs, this function
3058 1.1 christos selects those that must be copied when linking a shared library,
3059 1.1 christos even when the symbol is local. */
3060 1.1 christos
3061 1.1 christos static int
3062 1.1 christos must_be_dyn_reloc (struct bfd_link_info *info,
3063 1.1 christos enum elf_ppc_reloc_type r_type)
3064 1.1 christos {
3065 1.1 christos switch (r_type)
3066 1.1 christos {
3067 1.1 christos default:
3068 1.1 christos return 1;
3069 1.1 christos
3070 1.1 christos case R_PPC_REL24:
3071 1.1 christos case R_PPC_REL14:
3072 1.1 christos case R_PPC_REL14_BRTAKEN:
3073 1.1 christos case R_PPC_REL14_BRNTAKEN:
3074 1.1 christos case R_PPC_REL32:
3075 1.1 christos return 0;
3076 1.1 christos
3077 1.1 christos case R_PPC_TPREL32:
3078 1.1 christos case R_PPC_TPREL16:
3079 1.1 christos case R_PPC_TPREL16_LO:
3080 1.1 christos case R_PPC_TPREL16_HI:
3081 1.1 christos case R_PPC_TPREL16_HA:
3082 1.1 christos return !info->executable;
3083 1.1 christos }
3084 1.1 christos }
3085 1.1 christos
3086 1.1 christos /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3087 1.1 christos copying dynamic variables from a shared lib into an app's dynbss
3088 1.1 christos section, and instead use a dynamic relocation to point into the
3089 1.1 christos shared lib. */
3090 1.1 christos #define ELIMINATE_COPY_RELOCS 1
3091 1.1 christos
3092 1.1 christos /* Used to track dynamic relocations for local symbols. */
3093 1.1 christos struct ppc_dyn_relocs
3094 1.1 christos {
3095 1.1 christos struct ppc_dyn_relocs *next;
3096 1.1 christos
3097 1.1 christos /* The input section of the reloc. */
3098 1.1 christos asection *sec;
3099 1.1 christos
3100 1.1 christos /* Total number of relocs copied for the input section. */
3101 1.1 christos unsigned int count : 31;
3102 1.1 christos
3103 1.1 christos /* Whether this entry is for STT_GNU_IFUNC symbols. */
3104 1.1 christos unsigned int ifunc : 1;
3105 1.1 christos };
3106 1.1 christos
3107 1.1 christos /* PPC ELF linker hash entry. */
3108 1.1 christos
3109 1.1 christos struct ppc_elf_link_hash_entry
3110 1.1 christos {
3111 1.1 christos struct elf_link_hash_entry elf;
3112 1.1 christos
3113 1.1 christos /* If this symbol is used in the linker created sections, the processor
3114 1.1 christos specific backend uses this field to map the field into the offset
3115 1.1 christos from the beginning of the section. */
3116 1.1 christos elf_linker_section_pointers_t *linker_section_pointer;
3117 1.1 christos
3118 1.1 christos /* Track dynamic relocs copied for this symbol. */
3119 1.1 christos struct elf_dyn_relocs *dyn_relocs;
3120 1.1 christos
3121 1.1 christos /* Contexts in which symbol is used in the GOT (or TOC).
3122 1.1 christos TLS_GD .. TLS_TLS bits are or'd into the mask as the
3123 1.1 christos corresponding relocs are encountered during check_relocs.
3124 1.1 christos tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3125 1.1 christos indicate the corresponding GOT entry type is not needed. */
3126 1.1 christos #define TLS_GD 1 /* GD reloc. */
3127 1.1 christos #define TLS_LD 2 /* LD reloc. */
3128 1.1 christos #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3129 1.1 christos #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3130 1.1 christos #define TLS_TLS 16 /* Any TLS reloc. */
3131 1.1 christos #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3132 1.1 christos #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3133 1.1 christos char tls_mask;
3134 1.1 christos
3135 1.1 christos /* Nonzero if we have seen a small data relocation referring to this
3136 1.1 christos symbol. */
3137 1.1 christos unsigned char has_sda_refs;
3138 1.1 christos };
3139 1.1 christos
3140 1.1 christos #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3141 1.1 christos
3142 1.1 christos /* PPC ELF linker hash table. */
3143 1.1 christos
3144 1.1 christos struct ppc_elf_link_hash_table
3145 1.1 christos {
3146 1.1 christos struct elf_link_hash_table elf;
3147 1.1 christos
3148 1.1 christos /* Short-cuts to get to dynamic linker sections. */
3149 1.1 christos asection *got;
3150 1.1 christos asection *relgot;
3151 1.1 christos asection *glink;
3152 1.1 christos asection *plt;
3153 1.1 christos asection *relplt;
3154 1.1 christos asection *iplt;
3155 1.1 christos asection *reliplt;
3156 1.1 christos asection *dynbss;
3157 1.1 christos asection *relbss;
3158 1.1 christos asection *dynsbss;
3159 1.1 christos asection *relsbss;
3160 1.1 christos elf_linker_section_t sdata[2];
3161 1.1 christos asection *sbss;
3162 1.1 christos asection *glink_eh_frame;
3163 1.1 christos
3164 1.1 christos /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3165 1.1 christos asection *srelplt2;
3166 1.1 christos
3167 1.1 christos /* The .got.plt section (VxWorks only)*/
3168 1.1 christos asection *sgotplt;
3169 1.1 christos
3170 1.1 christos /* Shortcut to __tls_get_addr. */
3171 1.1 christos struct elf_link_hash_entry *tls_get_addr;
3172 1.1 christos
3173 1.1 christos /* The bfd that forced an old-style PLT. */
3174 1.1 christos bfd *old_bfd;
3175 1.1 christos
3176 1.1 christos /* TLS local dynamic got entry handling. */
3177 1.1 christos union {
3178 1.1 christos bfd_signed_vma refcount;
3179 1.1 christos bfd_vma offset;
3180 1.1 christos } tlsld_got;
3181 1.1 christos
3182 1.1 christos /* Offset of branch table to PltResolve function in glink. */
3183 1.1 christos bfd_vma glink_pltresolve;
3184 1.1 christos
3185 1.1 christos /* Size of reserved GOT entries. */
3186 1.1 christos unsigned int got_header_size;
3187 1.1 christos /* Non-zero if allocating the header left a gap. */
3188 1.1 christos unsigned int got_gap;
3189 1.1 christos
3190 1.1 christos /* The type of PLT we have chosen to use. */
3191 1.1 christos enum ppc_elf_plt_type plt_type;
3192 1.1 christos
3193 1.1 christos /* Set if we should emit symbols for stubs. */
3194 1.1 christos unsigned int emit_stub_syms:1;
3195 1.1 christos
3196 1.1 christos /* Set if __tls_get_addr optimization should not be done. */
3197 1.1 christos unsigned int no_tls_get_addr_opt:1;
3198 1.1 christos
3199 1.1 christos /* True if the target system is VxWorks. */
3200 1.1 christos unsigned int is_vxworks:1;
3201 1.1 christos
3202 1.1 christos /* The size of PLT entries. */
3203 1.1 christos int plt_entry_size;
3204 1.1 christos /* The distance between adjacent PLT slots. */
3205 1.1 christos int plt_slot_size;
3206 1.1 christos /* The size of the first PLT entry. */
3207 1.1 christos int plt_initial_entry_size;
3208 1.1 christos
3209 1.1 christos /* Small local sym cache. */
3210 1.1 christos struct sym_cache sym_cache;
3211 1.1 christos };
3212 1.1 christos
3213 1.1 christos /* Rename some of the generic section flags to better document how they
3214 1.1 christos are used for ppc32. The flags are only valid for ppc32 elf objects. */
3215 1.1 christos
3216 1.1 christos /* Nonzero if this section has TLS related relocations. */
3217 1.1 christos #define has_tls_reloc sec_flg0
3218 1.1 christos
3219 1.1 christos /* Nonzero if this section has a call to __tls_get_addr. */
3220 1.1 christos #define has_tls_get_addr_call sec_flg1
3221 1.1 christos
3222 1.1 christos /* Get the PPC ELF linker hash table from a link_info structure. */
3223 1.1 christos
3224 1.1 christos #define ppc_elf_hash_table(p) \
3225 1.1 christos (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3226 1.1 christos == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3227 1.1 christos
3228 1.1 christos /* Create an entry in a PPC ELF linker hash table. */
3229 1.1 christos
3230 1.1 christos static struct bfd_hash_entry *
3231 1.1 christos ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3232 1.1 christos struct bfd_hash_table *table,
3233 1.1 christos const char *string)
3234 1.1 christos {
3235 1.1 christos /* Allocate the structure if it has not already been allocated by a
3236 1.1 christos subclass. */
3237 1.1 christos if (entry == NULL)
3238 1.1 christos {
3239 1.1 christos entry = bfd_hash_allocate (table,
3240 1.1 christos sizeof (struct ppc_elf_link_hash_entry));
3241 1.1 christos if (entry == NULL)
3242 1.1 christos return entry;
3243 1.1 christos }
3244 1.1 christos
3245 1.1 christos /* Call the allocation method of the superclass. */
3246 1.1 christos entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3247 1.1 christos if (entry != NULL)
3248 1.1 christos {
3249 1.1 christos ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3250 1.1 christos ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3251 1.1 christos ppc_elf_hash_entry (entry)->tls_mask = 0;
3252 1.1 christos ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3253 1.1 christos }
3254 1.1 christos
3255 1.1 christos return entry;
3256 1.1 christos }
3257 1.1 christos
3258 1.1 christos /* Create a PPC ELF linker hash table. */
3259 1.1 christos
3260 1.1 christos static struct bfd_link_hash_table *
3261 1.1 christos ppc_elf_link_hash_table_create (bfd *abfd)
3262 1.1 christos {
3263 1.1 christos struct ppc_elf_link_hash_table *ret;
3264 1.1 christos
3265 1.1 christos ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3266 1.1 christos if (ret == NULL)
3267 1.1 christos return NULL;
3268 1.1 christos
3269 1.1 christos if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3270 1.1 christos ppc_elf_link_hash_newfunc,
3271 1.1 christos sizeof (struct ppc_elf_link_hash_entry),
3272 1.1 christos PPC32_ELF_DATA))
3273 1.1 christos {
3274 1.1 christos free (ret);
3275 1.1 christos return NULL;
3276 1.1 christos }
3277 1.1 christos
3278 1.1 christos ret->elf.init_plt_refcount.refcount = 0;
3279 1.1 christos ret->elf.init_plt_refcount.glist = NULL;
3280 1.1 christos ret->elf.init_plt_offset.offset = 0;
3281 1.1 christos ret->elf.init_plt_offset.glist = NULL;
3282 1.1 christos
3283 1.1 christos ret->sdata[0].name = ".sdata";
3284 1.1 christos ret->sdata[0].sym_name = "_SDA_BASE_";
3285 1.1 christos ret->sdata[0].bss_name = ".sbss";
3286 1.1 christos
3287 1.1 christos ret->sdata[1].name = ".sdata2";
3288 1.1 christos ret->sdata[1].sym_name = "_SDA2_BASE_";
3289 1.1 christos ret->sdata[1].bss_name = ".sbss2";
3290 1.1 christos
3291 1.1 christos ret->plt_entry_size = 12;
3292 1.1 christos ret->plt_slot_size = 8;
3293 1.1 christos ret->plt_initial_entry_size = 72;
3294 1.1 christos
3295 1.1 christos return &ret->elf.root;
3296 1.1 christos }
3297 1.1 christos
3298 1.1 christos /* Create .got and the related sections. */
3299 1.1 christos
3300 1.1 christos static bfd_boolean
3301 1.1 christos ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3302 1.1 christos {
3303 1.1 christos struct ppc_elf_link_hash_table *htab;
3304 1.1 christos asection *s;
3305 1.1 christos flagword flags;
3306 1.1 christos
3307 1.1 christos if (!_bfd_elf_create_got_section (abfd, info))
3308 1.1 christos return FALSE;
3309 1.1 christos
3310 1.1 christos htab = ppc_elf_hash_table (info);
3311 1.1 christos htab->got = s = bfd_get_linker_section (abfd, ".got");
3312 1.1 christos if (s == NULL)
3313 1.1 christos abort ();
3314 1.1 christos
3315 1.1 christos if (htab->is_vxworks)
3316 1.1 christos {
3317 1.1 christos htab->sgotplt = bfd_get_linker_section (abfd, ".got.plt");
3318 1.1 christos if (!htab->sgotplt)
3319 1.1 christos abort ();
3320 1.1 christos }
3321 1.1 christos else
3322 1.1 christos {
3323 1.1 christos /* The powerpc .got has a blrl instruction in it. Mark it
3324 1.1 christos executable. */
3325 1.1 christos flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3326 1.1 christos | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3327 1.1 christos if (!bfd_set_section_flags (abfd, s, flags))
3328 1.1 christos return FALSE;
3329 1.1 christos }
3330 1.1 christos
3331 1.1 christos htab->relgot = bfd_get_linker_section (abfd, ".rela.got");
3332 1.1 christos if (!htab->relgot)
3333 1.1 christos abort ();
3334 1.1 christos
3335 1.1 christos return TRUE;
3336 1.1 christos }
3337 1.1 christos
3338 1.1 christos static bfd_boolean
3339 1.1 christos ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3340 1.1 christos {
3341 1.1 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3342 1.1 christos asection *s;
3343 1.1 christos flagword flags;
3344 1.1 christos
3345 1.1 christos flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3346 1.1 christos | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3347 1.1 christos s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3348 1.1 christos htab->glink = s;
3349 1.1 christos if (s == NULL
3350 1.1 christos || !bfd_set_section_alignment (abfd, s, 4))
3351 1.1 christos return FALSE;
3352 1.1 christos
3353 1.1 christos if (!info->no_ld_generated_unwind_info)
3354 1.1 christos {
3355 1.1 christos flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3356 1.1 christos | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3357 1.1 christos s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3358 1.1 christos htab->glink_eh_frame = s;
3359 1.1 christos if (s == NULL
3360 1.1 christos || !bfd_set_section_alignment (abfd, s, 2))
3361 1.1 christos return FALSE;
3362 1.1 christos }
3363 1.1 christos
3364 1.1 christos flags = SEC_ALLOC | SEC_LINKER_CREATED;
3365 1.1 christos s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3366 1.1 christos htab->iplt = s;
3367 1.1 christos if (s == NULL
3368 1.1 christos || !bfd_set_section_alignment (abfd, s, 4))
3369 1.1 christos return FALSE;
3370 1.1 christos
3371 1.1 christos flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3372 1.1 christos | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3373 1.1 christos s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3374 1.1 christos htab->reliplt = s;
3375 1.1 christos if (s == NULL
3376 1.1 christos || ! bfd_set_section_alignment (abfd, s, 2))
3377 1.1 christos return FALSE;
3378 1.1 christos return TRUE;
3379 1.1 christos }
3380 1.1 christos
3381 1.1 christos /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3382 1.1 christos to output sections (just like _bfd_elf_create_dynamic_sections has
3383 1.1 christos to create .dynbss and .rela.bss). */
3384 1.1 christos
3385 1.1 christos static bfd_boolean
3386 1.1 christos ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3387 1.1 christos {
3388 1.1 christos struct ppc_elf_link_hash_table *htab;
3389 1.1 christos asection *s;
3390 1.1 christos flagword flags;
3391 1.1 christos
3392 1.1 christos htab = ppc_elf_hash_table (info);
3393 1.1 christos
3394 1.1 christos if (htab->got == NULL
3395 1.1 christos && !ppc_elf_create_got (abfd, info))
3396 1.1 christos return FALSE;
3397 1.1 christos
3398 1.1 christos if (!_bfd_elf_create_dynamic_sections (abfd, info))
3399 1.1 christos return FALSE;
3400 1.1 christos
3401 1.1 christos if (htab->glink == NULL
3402 1.1 christos && !ppc_elf_create_glink (abfd, info))
3403 1.1 christos return FALSE;
3404 1.1 christos
3405 1.1 christos htab->dynbss = bfd_get_linker_section (abfd, ".dynbss");
3406 1.1 christos s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3407 1.1 christos SEC_ALLOC | SEC_LINKER_CREATED);
3408 1.1 christos htab->dynsbss = s;
3409 1.1 christos if (s == NULL)
3410 1.1 christos return FALSE;
3411 1.1 christos
3412 1.1 christos if (! info->shared)
3413 1.1 christos {
3414 1.1 christos htab->relbss = bfd_get_linker_section (abfd, ".rela.bss");
3415 1.1 christos flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3416 1.1 christos | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3417 1.1 christos s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3418 1.1 christos htab->relsbss = s;
3419 1.1 christos if (s == NULL
3420 1.1 christos || ! bfd_set_section_alignment (abfd, s, 2))
3421 1.1 christos return FALSE;
3422 1.1 christos }
3423 1.1 christos
3424 1.1 christos if (htab->is_vxworks
3425 1.1 christos && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3426 1.1 christos return FALSE;
3427 1.1 christos
3428 1.1 christos htab->relplt = bfd_get_linker_section (abfd, ".rela.plt");
3429 1.1 christos htab->plt = s = bfd_get_linker_section (abfd, ".plt");
3430 1.1 christos if (s == NULL)
3431 1.1 christos abort ();
3432 1.1 christos
3433 1.1 christos flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3434 1.1 christos if (htab->plt_type == PLT_VXWORKS)
3435 1.1 christos /* The VxWorks PLT is a loaded section with contents. */
3436 1.1 christos flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3437 1.1 christos return bfd_set_section_flags (abfd, s, flags);
3438 1.1 christos }
3439 1.1 christos
3440 1.1 christos /* Copy the extra info we tack onto an elf_link_hash_entry. */
3441 1.1 christos
3442 1.1 christos static void
3443 1.1 christos ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3444 1.1 christos struct elf_link_hash_entry *dir,
3445 1.1 christos struct elf_link_hash_entry *ind)
3446 1.1 christos {
3447 1.1 christos struct ppc_elf_link_hash_entry *edir, *eind;
3448 1.1 christos
3449 1.1 christos edir = (struct ppc_elf_link_hash_entry *) dir;
3450 1.1 christos eind = (struct ppc_elf_link_hash_entry *) ind;
3451 1.1 christos
3452 1.1 christos edir->tls_mask |= eind->tls_mask;
3453 1.1 christos edir->has_sda_refs |= eind->has_sda_refs;
3454 1.1 christos
3455 1.1 christos /* If called to transfer flags for a weakdef during processing
3456 1.1 christos of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3457 1.1 christos We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3458 1.1 christos if (!(ELIMINATE_COPY_RELOCS
3459 1.1 christos && eind->elf.root.type != bfd_link_hash_indirect
3460 1.1 christos && edir->elf.dynamic_adjusted))
3461 1.1 christos edir->elf.non_got_ref |= eind->elf.non_got_ref;
3462 1.1 christos
3463 1.1 christos edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3464 1.1 christos edir->elf.ref_regular |= eind->elf.ref_regular;
3465 1.1 christos edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3466 1.1 christos edir->elf.needs_plt |= eind->elf.needs_plt;
3467 1.1 christos edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3468 1.1 christos
3469 1.1 christos if (eind->dyn_relocs != NULL)
3470 1.1 christos {
3471 1.1 christos if (edir->dyn_relocs != NULL)
3472 1.1 christos {
3473 1.1 christos struct elf_dyn_relocs **pp;
3474 1.1 christos struct elf_dyn_relocs *p;
3475 1.1 christos
3476 1.1 christos /* Add reloc counts against the indirect sym to the direct sym
3477 1.1 christos list. Merge any entries against the same section. */
3478 1.1 christos for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3479 1.1 christos {
3480 1.1 christos struct elf_dyn_relocs *q;
3481 1.1 christos
3482 1.1 christos for (q = edir->dyn_relocs; q != NULL; q = q->next)
3483 1.1 christos if (q->sec == p->sec)
3484 1.1 christos {
3485 1.1 christos q->pc_count += p->pc_count;
3486 1.1 christos q->count += p->count;
3487 1.1 christos *pp = p->next;
3488 1.1 christos break;
3489 1.1 christos }
3490 1.1 christos if (q == NULL)
3491 1.1 christos pp = &p->next;
3492 1.1 christos }
3493 1.1 christos *pp = edir->dyn_relocs;
3494 1.1 christos }
3495 1.1 christos
3496 1.1 christos edir->dyn_relocs = eind->dyn_relocs;
3497 1.1 christos eind->dyn_relocs = NULL;
3498 1.1 christos }
3499 1.1 christos
3500 1.1 christos /* If we were called to copy over info for a weak sym, that's all.
3501 1.1 christos You might think dyn_relocs need not be copied over; After all,
3502 1.1 christos both syms will be dynamic or both non-dynamic so we're just
3503 1.1 christos moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3504 1.1 christos code in ppc_elf_adjust_dynamic_symbol needs to check for
3505 1.1 christos dyn_relocs in read-only sections, and it does so on what is the
3506 1.1 christos DIR sym here. */
3507 1.1 christos if (eind->elf.root.type != bfd_link_hash_indirect)
3508 1.1 christos return;
3509 1.1 christos
3510 1.1 christos /* Copy over the GOT refcount entries that we may have already seen to
3511 1.1 christos the symbol which just became indirect. */
3512 1.1 christos edir->elf.got.refcount += eind->elf.got.refcount;
3513 1.1 christos eind->elf.got.refcount = 0;
3514 1.1 christos
3515 1.1 christos /* And plt entries. */
3516 1.1 christos if (eind->elf.plt.plist != NULL)
3517 1.1 christos {
3518 1.1 christos if (edir->elf.plt.plist != NULL)
3519 1.1 christos {
3520 1.1 christos struct plt_entry **entp;
3521 1.1 christos struct plt_entry *ent;
3522 1.1 christos
3523 1.1 christos for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3524 1.1 christos {
3525 1.1 christos struct plt_entry *dent;
3526 1.1 christos
3527 1.1 christos for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3528 1.1 christos if (dent->sec == ent->sec && dent->addend == ent->addend)
3529 1.1 christos {
3530 1.1 christos dent->plt.refcount += ent->plt.refcount;
3531 1.1 christos *entp = ent->next;
3532 1.1 christos break;
3533 1.1 christos }
3534 1.1 christos if (dent == NULL)
3535 1.1 christos entp = &ent->next;
3536 1.1 christos }
3537 1.1 christos *entp = edir->elf.plt.plist;
3538 1.1 christos }
3539 1.1 christos
3540 1.1 christos edir->elf.plt.plist = eind->elf.plt.plist;
3541 1.1 christos eind->elf.plt.plist = NULL;
3542 1.1 christos }
3543 1.1 christos
3544 1.1 christos if (eind->elf.dynindx != -1)
3545 1.1 christos {
3546 1.1 christos if (edir->elf.dynindx != -1)
3547 1.1 christos _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3548 1.1 christos edir->elf.dynstr_index);
3549 1.1 christos edir->elf.dynindx = eind->elf.dynindx;
3550 1.1 christos edir->elf.dynstr_index = eind->elf.dynstr_index;
3551 1.1 christos eind->elf.dynindx = -1;
3552 1.1 christos eind->elf.dynstr_index = 0;
3553 1.1 christos }
3554 1.1 christos }
3555 1.1 christos
3556 1.1 christos /* Hook called by the linker routine which adds symbols from an object
3557 1.1 christos file. We use it to put .comm items in .sbss, and not .bss. */
3558 1.1 christos
3559 1.1 christos static bfd_boolean
3560 1.1 christos ppc_elf_add_symbol_hook (bfd *abfd,
3561 1.1 christos struct bfd_link_info *info,
3562 1.1 christos Elf_Internal_Sym *sym,
3563 1.1 christos const char **namep ATTRIBUTE_UNUSED,
3564 1.1 christos flagword *flagsp ATTRIBUTE_UNUSED,
3565 1.1 christos asection **secp,
3566 1.1 christos bfd_vma *valp)
3567 1.1 christos {
3568 1.1 christos if (sym->st_shndx == SHN_COMMON
3569 1.1 christos && !info->relocatable
3570 1.1 christos && is_ppc_elf (info->output_bfd)
3571 1.1 christos && sym->st_size <= elf_gp_size (abfd))
3572 1.1 christos {
3573 1.1 christos /* Common symbols less than or equal to -G nn bytes are automatically
3574 1.1 christos put into .sbss. */
3575 1.1 christos struct ppc_elf_link_hash_table *htab;
3576 1.1 christos
3577 1.1 christos htab = ppc_elf_hash_table (info);
3578 1.1 christos if (htab->sbss == NULL)
3579 1.1 christos {
3580 1.1 christos flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3581 1.1 christos
3582 1.1 christos if (!htab->elf.dynobj)
3583 1.1 christos htab->elf.dynobj = abfd;
3584 1.1 christos
3585 1.1 christos htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3586 1.1 christos ".sbss",
3587 1.1 christos flags);
3588 1.1 christos if (htab->sbss == NULL)
3589 1.1 christos return FALSE;
3590 1.1 christos }
3591 1.1 christos
3592 1.1 christos *secp = htab->sbss;
3593 1.1 christos *valp = sym->st_size;
3594 1.1 christos }
3595 1.1 christos
3596 1.1 christos if ((abfd->flags & DYNAMIC) == 0
3597 1.1 christos && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3598 1.1 christos || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
3599 1.1 christos elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
3600 1.1 christos
3601 1.1 christos return TRUE;
3602 1.1 christos }
3603 1.1 christos
3604 1.1 christos static bfd_boolean
3606 1.1 christos create_sdata_sym (struct bfd_link_info *info, elf_linker_section_t *lsect)
3607 1.1 christos {
3608 1.1 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3609 1.1 christos
3610 1.1 christos lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
3611 1.1 christos TRUE, FALSE, TRUE);
3612 1.1 christos if (lsect->sym == NULL)
3613 1.1 christos return FALSE;
3614 1.1 christos if (lsect->sym->root.type == bfd_link_hash_new)
3615 1.1 christos lsect->sym->non_elf = 0;
3616 1.1 christos lsect->sym->ref_regular = 1;
3617 1.1 christos _bfd_elf_link_hash_hide_symbol (info, lsect->sym, TRUE);
3618 1.1 christos return TRUE;
3619 1.1 christos }
3620 1.1 christos
3621 1.1 christos /* Create a special linker section. */
3622 1.1 christos
3623 1.1 christos static bfd_boolean
3624 1.1 christos ppc_elf_create_linker_section (bfd *abfd,
3625 1.1 christos struct bfd_link_info *info,
3626 1.1 christos flagword flags,
3627 1.1 christos elf_linker_section_t *lsect)
3628 1.1 christos {
3629 1.1 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3630 1.1 christos asection *s;
3631 1.1 christos
3632 1.1 christos flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3633 1.1 christos | SEC_LINKER_CREATED);
3634 1.1 christos
3635 1.1 christos /* Record the first bfd that needs the special sections. */
3636 1.1 christos if (!htab->elf.dynobj)
3637 1.1 christos htab->elf.dynobj = abfd;
3638 1.1 christos
3639 1.1 christos s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3640 1.1 christos lsect->name,
3641 1.1 christos flags);
3642 1.1 christos if (s == NULL
3643 1.1 christos || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
3644 1.1 christos return FALSE;
3645 1.1 christos lsect->section = s;
3646 1.1 christos
3647 1.1 christos return create_sdata_sym (info, lsect);
3648 1.1 christos }
3649 1.1 christos
3650 1.1 christos /* Find a linker generated pointer with a given addend and type. */
3651 1.1 christos
3652 1.1 christos static elf_linker_section_pointers_t *
3653 1.1 christos elf_find_pointer_linker_section
3654 1.1 christos (elf_linker_section_pointers_t *linker_pointers,
3655 1.1 christos bfd_vma addend,
3656 1.1 christos elf_linker_section_t *lsect)
3657 1.1 christos {
3658 1.1 christos for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3659 1.1 christos if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3660 1.1 christos return linker_pointers;
3661 1.1 christos
3662 1.1 christos return NULL;
3663 1.1 christos }
3664 1.1 christos
3665 1.1 christos /* Allocate a pointer to live in a linker created section. */
3666 1.1 christos
3667 1.1 christos static bfd_boolean
3668 1.1 christos elf_create_pointer_linker_section (bfd *abfd,
3669 1.1 christos elf_linker_section_t *lsect,
3670 1.1 christos struct elf_link_hash_entry *h,
3671 1.1 christos const Elf_Internal_Rela *rel)
3672 1.1 christos {
3673 1.1 christos elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3674 1.1 christos elf_linker_section_pointers_t *linker_section_ptr;
3675 1.1 christos unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3676 1.1 christos bfd_size_type amt;
3677 1.1 christos
3678 1.1 christos BFD_ASSERT (lsect != NULL);
3679 1.1 christos
3680 1.1 christos /* Is this a global symbol? */
3681 1.1 christos if (h != NULL)
3682 1.1 christos {
3683 1.1 christos struct ppc_elf_link_hash_entry *eh;
3684 1.1 christos
3685 1.1 christos /* Has this symbol already been allocated? If so, our work is done. */
3686 1.1 christos eh = (struct ppc_elf_link_hash_entry *) h;
3687 1.1 christos if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3688 1.1 christos rel->r_addend,
3689 1.1 christos lsect))
3690 1.1 christos return TRUE;
3691 1.1 christos
3692 1.1 christos ptr_linker_section_ptr = &eh->linker_section_pointer;
3693 1.1 christos }
3694 1.1 christos else
3695 1.1 christos {
3696 1.1 christos BFD_ASSERT (is_ppc_elf (abfd));
3697 1.1 christos
3698 1.1 christos /* Allocation of a pointer to a local symbol. */
3699 1.1 christos elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3700 1.1 christos
3701 1.1 christos /* Allocate a table to hold the local symbols if first time. */
3702 1.1 christos if (!ptr)
3703 1.1 christos {
3704 1.1 christos unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3705 1.1 christos
3706 1.1 christos amt = num_symbols;
3707 1.1 christos amt *= sizeof (elf_linker_section_pointers_t *);
3708 1.1 christos ptr = bfd_zalloc (abfd, amt);
3709 1.1 christos
3710 1.1 christos if (!ptr)
3711 1.1 christos return FALSE;
3712 1.1 christos
3713 1.1 christos elf_local_ptr_offsets (abfd) = ptr;
3714 1.1 christos }
3715 1.1 christos
3716 1.1 christos /* Has this symbol already been allocated? If so, our work is done. */
3717 1.1 christos if (elf_find_pointer_linker_section (ptr[r_symndx],
3718 1.1 christos rel->r_addend,
3719 1.1 christos lsect))
3720 1.1 christos return TRUE;
3721 1.1 christos
3722 1.1 christos ptr_linker_section_ptr = &ptr[r_symndx];
3723 1.1 christos }
3724 1.1 christos
3725 1.1 christos /* Allocate space for a pointer in the linker section, and allocate
3726 1.1 christos a new pointer record from internal memory. */
3727 1.1 christos BFD_ASSERT (ptr_linker_section_ptr != NULL);
3728 1.1 christos amt = sizeof (elf_linker_section_pointers_t);
3729 1.1 christos linker_section_ptr = bfd_alloc (abfd, amt);
3730 1.1 christos
3731 1.1 christos if (!linker_section_ptr)
3732 1.1 christos return FALSE;
3733 1.1 christos
3734 1.1 christos linker_section_ptr->next = *ptr_linker_section_ptr;
3735 1.1 christos linker_section_ptr->addend = rel->r_addend;
3736 1.1 christos linker_section_ptr->lsect = lsect;
3737 1.1 christos *ptr_linker_section_ptr = linker_section_ptr;
3738 1.1 christos
3739 1.1 christos linker_section_ptr->offset = lsect->section->size;
3740 1.1 christos lsect->section->size += 4;
3741 1.1 christos
3742 1.1 christos #ifdef DEBUG
3743 1.1 christos fprintf (stderr,
3744 1.1 christos "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3745 1.1 christos lsect->name, (long) linker_section_ptr->offset,
3746 1.1 christos (long) lsect->section->size);
3747 1.1 christos #endif
3748 1.1 christos
3749 1.1 christos return TRUE;
3750 1.1 christos }
3751 1.1 christos
3752 1.1 christos static struct plt_entry **
3753 1.1 christos update_local_sym_info (bfd *abfd,
3754 1.1 christos Elf_Internal_Shdr *symtab_hdr,
3755 1.1 christos unsigned long r_symndx,
3756 1.1 christos int tls_type)
3757 1.1 christos {
3758 1.1 christos bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3759 1.1 christos struct plt_entry **local_plt;
3760 1.1 christos char *local_got_tls_masks;
3761 1.1 christos
3762 1.1 christos if (local_got_refcounts == NULL)
3763 1.1 christos {
3764 1.1 christos bfd_size_type size = symtab_hdr->sh_info;
3765 1.1 christos
3766 1.1 christos size *= (sizeof (*local_got_refcounts)
3767 1.1 christos + sizeof (*local_plt)
3768 1.1 christos + sizeof (*local_got_tls_masks));
3769 1.1 christos local_got_refcounts = bfd_zalloc (abfd, size);
3770 1.1 christos if (local_got_refcounts == NULL)
3771 1.1 christos return NULL;
3772 1.1 christos elf_local_got_refcounts (abfd) = local_got_refcounts;
3773 1.1 christos }
3774 1.1 christos
3775 1.1 christos local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3776 1.1 christos local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3777 1.1 christos local_got_tls_masks[r_symndx] |= tls_type;
3778 1.1 christos if (tls_type != PLT_IFUNC)
3779 1.1 christos local_got_refcounts[r_symndx] += 1;
3780 1.1 christos return local_plt + r_symndx;
3781 1.1 christos }
3782 1.1 christos
3783 1.1 christos static bfd_boolean
3784 1.1 christos update_plt_info (bfd *abfd, struct plt_entry **plist,
3785 1.1 christos asection *sec, bfd_vma addend)
3786 1.1 christos {
3787 1.1 christos struct plt_entry *ent;
3788 1.1 christos
3789 1.1 christos if (addend < 32768)
3790 1.1 christos sec = NULL;
3791 1.1 christos for (ent = *plist; ent != NULL; ent = ent->next)
3792 1.1 christos if (ent->sec == sec && ent->addend == addend)
3793 1.1 christos break;
3794 1.1 christos if (ent == NULL)
3795 1.1 christos {
3796 1.1 christos bfd_size_type amt = sizeof (*ent);
3797 1.1 christos ent = bfd_alloc (abfd, amt);
3798 1.1 christos if (ent == NULL)
3799 1.1 christos return FALSE;
3800 1.1 christos ent->next = *plist;
3801 1.1 christos ent->sec = sec;
3802 1.1 christos ent->addend = addend;
3803 1.1 christos ent->plt.refcount = 0;
3804 1.1 christos *plist = ent;
3805 1.1 christos }
3806 1.1 christos ent->plt.refcount += 1;
3807 1.1 christos return TRUE;
3808 1.1 christos }
3809 1.1 christos
3810 1.1 christos static struct plt_entry *
3811 1.1 christos find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3812 1.1 christos {
3813 1.1 christos struct plt_entry *ent;
3814 1.1 christos
3815 1.1 christos if (addend < 32768)
3816 1.1 christos sec = NULL;
3817 1.1 christos for (ent = *plist; ent != NULL; ent = ent->next)
3818 1.1 christos if (ent->sec == sec && ent->addend == addend)
3819 1.1 christos break;
3820 1.1 christos return ent;
3821 1.1 christos }
3822 1.1 christos
3823 1.1 christos static bfd_boolean
3824 1.1 christos is_branch_reloc (enum elf_ppc_reloc_type r_type)
3825 1.1 christos {
3826 1.1 christos return (r_type == R_PPC_PLTREL24
3827 1.1 christos || r_type == R_PPC_LOCAL24PC
3828 1.1 christos || r_type == R_PPC_REL24
3829 1.1 christos || r_type == R_PPC_REL14
3830 1.1 christos || r_type == R_PPC_REL14_BRTAKEN
3831 1.1 christos || r_type == R_PPC_REL14_BRNTAKEN
3832 1.1 christos || r_type == R_PPC_ADDR24
3833 1.1 christos || r_type == R_PPC_ADDR14
3834 1.1 christos || r_type == R_PPC_ADDR14_BRTAKEN
3835 1.1 christos || r_type == R_PPC_ADDR14_BRNTAKEN);
3836 1.1 christos }
3837 1.1 christos
3838 1.1 christos static void
3839 1.1 christos bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3840 1.1 christos {
3841 1.1 christos (*_bfd_error_handler)
3842 1.1 christos (_("%B: relocation %s cannot be used when making a shared object"),
3843 1.1 christos abfd,
3844 1.1 christos ppc_elf_howto_table[r_type]->name);
3845 1.1 christos bfd_set_error (bfd_error_bad_value);
3846 1.1 christos }
3847 1.1 christos
3848 1.1 christos /* Look through the relocs for a section during the first phase, and
3849 1.1 christos allocate space in the global offset table or procedure linkage
3850 1.1 christos table. */
3851 1.1 christos
3852 1.1 christos static bfd_boolean
3853 1.1 christos ppc_elf_check_relocs (bfd *abfd,
3854 1.1 christos struct bfd_link_info *info,
3855 1.1 christos asection *sec,
3856 1.1 christos const Elf_Internal_Rela *relocs)
3857 1.1 christos {
3858 1.1 christos struct ppc_elf_link_hash_table *htab;
3859 1.1 christos Elf_Internal_Shdr *symtab_hdr;
3860 1.1 christos struct elf_link_hash_entry **sym_hashes;
3861 1.1 christos const Elf_Internal_Rela *rel;
3862 1.1 christos const Elf_Internal_Rela *rel_end;
3863 1.1 christos asection *got2, *sreloc;
3864 1.1 christos struct elf_link_hash_entry *tga;
3865 1.1 christos
3866 1.1 christos if (info->relocatable)
3867 1.1 christos return TRUE;
3868 1.1 christos
3869 1.1 christos /* Don't do anything special with non-loaded, non-alloced sections.
3870 1.1 christos In particular, any relocs in such sections should not affect GOT
3871 1.1 christos and PLT reference counting (ie. we don't allow them to create GOT
3872 1.1 christos or PLT entries), there's no possibility or desire to optimize TLS
3873 1.1 christos relocs, and there's not much point in propagating relocs to shared
3874 1.1 christos libs that the dynamic linker won't relocate. */
3875 1.1 christos if ((sec->flags & SEC_ALLOC) == 0)
3876 1.1 christos return TRUE;
3877 1.1 christos
3878 1.1 christos #ifdef DEBUG
3879 1.1 christos _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3880 1.1 christos sec, abfd);
3881 1.1 christos #endif
3882 1.1 christos
3883 1.1 christos BFD_ASSERT (is_ppc_elf (abfd));
3884 1.1 christos
3885 1.1 christos /* Initialize howto table if not already done. */
3886 1.1 christos if (!ppc_elf_howto_table[R_PPC_ADDR32])
3887 1.1 christos ppc_elf_howto_init ();
3888 1.1 christos
3889 1.1 christos htab = ppc_elf_hash_table (info);
3890 1.1 christos if (htab->glink == NULL)
3891 1.1 christos {
3892 1.1 christos if (htab->elf.dynobj == NULL)
3893 1.1 christos htab->elf.dynobj = abfd;
3894 1.1 christos if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3895 1.1 christos return FALSE;
3896 1.1 christos }
3897 1.1 christos tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3898 1.1 christos FALSE, FALSE, TRUE);
3899 1.1 christos symtab_hdr = &elf_symtab_hdr (abfd);
3900 1.1 christos sym_hashes = elf_sym_hashes (abfd);
3901 1.1 christos got2 = bfd_get_section_by_name (abfd, ".got2");
3902 1.1 christos sreloc = NULL;
3903 1.1 christos
3904 1.1 christos rel_end = relocs + sec->reloc_count;
3905 1.1 christos for (rel = relocs; rel < rel_end; rel++)
3906 1.1 christos {
3907 1.1 christos unsigned long r_symndx;
3908 1.1 christos enum elf_ppc_reloc_type r_type;
3909 1.1 christos struct elf_link_hash_entry *h;
3910 1.1 christos int tls_type;
3911 1.1 christos
3912 1.1 christos r_symndx = ELF32_R_SYM (rel->r_info);
3913 1.1 christos if (r_symndx < symtab_hdr->sh_info)
3914 1.1 christos h = NULL;
3915 1.1 christos else
3916 1.1 christos {
3917 1.1 christos h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3918 1.1 christos while (h->root.type == bfd_link_hash_indirect
3919 1.1 christos || h->root.type == bfd_link_hash_warning)
3920 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
3921 1.1 christos
3922 1.1 christos /* PR15323, ref flags aren't set for references in the same
3923 1.1 christos object. */
3924 1.1 christos h->root.non_ir_ref = 1;
3925 1.1 christos }
3926 1.1 christos
3927 1.1 christos /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3928 1.1 christos This shows up in particular in an R_PPC_ADDR32 in the eabi
3929 1.1 christos startup code. */
3930 1.1 christos if (h != NULL
3931 1.1 christos && htab->got == NULL
3932 1.1 christos && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3933 1.1 christos {
3934 1.1 christos if (htab->elf.dynobj == NULL)
3935 1.1 christos htab->elf.dynobj = abfd;
3936 1.1 christos if (!ppc_elf_create_got (htab->elf.dynobj, info))
3937 1.1 christos return FALSE;
3938 1.1 christos BFD_ASSERT (h == htab->elf.hgot);
3939 1.1 christos }
3940 1.1 christos
3941 1.1 christos tls_type = 0;
3942 1.1 christos r_type = ELF32_R_TYPE (rel->r_info);
3943 1.1 christos if (h == NULL && !htab->is_vxworks)
3944 1.1 christos {
3945 1.1 christos Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3946 1.1 christos abfd, r_symndx);
3947 1.1 christos if (isym == NULL)
3948 1.1 christos return FALSE;
3949 1.1 christos
3950 1.1 christos if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3951 1.1 christos {
3952 1.1 christos struct plt_entry **ifunc;
3953 1.1 christos
3954 1.1 christos /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
3955 1.1 christos ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
3956 1.1 christos PLT_IFUNC);
3957 1.1 christos if (ifunc == NULL)
3958 1.1 christos return FALSE;
3959 1.1 christos
3960 1.1 christos /* STT_GNU_IFUNC symbols must have a PLT entry;
3961 1.1 christos In a non-pie executable even when there are
3962 1.1 christos no plt calls. */
3963 1.1 christos if (!info->shared
3964 1.1 christos || is_branch_reloc (r_type))
3965 1.1 christos {
3966 1.1 christos bfd_vma addend = 0;
3967 1.1 christos if (r_type == R_PPC_PLTREL24)
3968 1.1 christos {
3969 1.1 christos ppc_elf_tdata (abfd)->makes_plt_call = 1;
3970 1.1 christos if (info->shared)
3971 1.1 christos addend = rel->r_addend;
3972 1.1 christos }
3973 1.1 christos if (!update_plt_info (abfd, ifunc, got2, addend))
3974 1.1 christos return FALSE;
3975 1.1 christos }
3976 1.1 christos }
3977 1.1 christos }
3978 1.1 christos
3979 1.1 christos if (!htab->is_vxworks
3980 1.1 christos && is_branch_reloc (r_type)
3981 1.1 christos && h != NULL
3982 1.1 christos && h == tga)
3983 1.1 christos {
3984 1.1 christos if (rel != relocs
3985 1.1 christos && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3986 1.1 christos || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
3987 1.1 christos /* We have a new-style __tls_get_addr call with a marker
3988 1.1 christos reloc. */
3989 1.1 christos ;
3990 1.1 christos else
3991 1.1 christos /* Mark this section as having an old-style call. */
3992 1.1 christos sec->has_tls_get_addr_call = 1;
3993 1.1 christos }
3994 1.1 christos
3995 1.1 christos switch (r_type)
3996 1.1 christos {
3997 1.1 christos case R_PPC_TLSGD:
3998 1.1 christos case R_PPC_TLSLD:
3999 1.1 christos /* These special tls relocs tie a call to __tls_get_addr with
4000 1.1 christos its parameter symbol. */
4001 1.1 christos break;
4002 1.1 christos
4003 1.1 christos case R_PPC_GOT_TLSLD16:
4004 1.1 christos case R_PPC_GOT_TLSLD16_LO:
4005 1.1 christos case R_PPC_GOT_TLSLD16_HI:
4006 1.1 christos case R_PPC_GOT_TLSLD16_HA:
4007 1.1 christos tls_type = TLS_TLS | TLS_LD;
4008 1.1 christos goto dogottls;
4009 1.1 christos
4010 1.1 christos case R_PPC_GOT_TLSGD16:
4011 1.1 christos case R_PPC_GOT_TLSGD16_LO:
4012 1.1 christos case R_PPC_GOT_TLSGD16_HI:
4013 1.1 christos case R_PPC_GOT_TLSGD16_HA:
4014 1.1 christos tls_type = TLS_TLS | TLS_GD;
4015 1.1 christos goto dogottls;
4016 1.1 christos
4017 1.1 christos case R_PPC_GOT_TPREL16:
4018 1.1 christos case R_PPC_GOT_TPREL16_LO:
4019 1.1 christos case R_PPC_GOT_TPREL16_HI:
4020 1.1 christos case R_PPC_GOT_TPREL16_HA:
4021 1.1 christos if (!info->executable)
4022 1.1 christos info->flags |= DF_STATIC_TLS;
4023 1.1 christos tls_type = TLS_TLS | TLS_TPREL;
4024 1.1 christos goto dogottls;
4025 1.1 christos
4026 1.1 christos case R_PPC_GOT_DTPREL16:
4027 1.1 christos case R_PPC_GOT_DTPREL16_LO:
4028 1.1 christos case R_PPC_GOT_DTPREL16_HI:
4029 1.1 christos case R_PPC_GOT_DTPREL16_HA:
4030 1.1 christos tls_type = TLS_TLS | TLS_DTPREL;
4031 1.1 christos dogottls:
4032 1.1 christos sec->has_tls_reloc = 1;
4033 1.1 christos /* Fall thru */
4034 1.1 christos
4035 1.1 christos /* GOT16 relocations */
4036 1.1 christos case R_PPC_GOT16:
4037 1.1 christos case R_PPC_GOT16_LO:
4038 1.1 christos case R_PPC_GOT16_HI:
4039 1.1 christos case R_PPC_GOT16_HA:
4040 1.1 christos /* This symbol requires a global offset table entry. */
4041 1.1 christos if (htab->got == NULL)
4042 1.1 christos {
4043 1.1 christos if (htab->elf.dynobj == NULL)
4044 1.1 christos htab->elf.dynobj = abfd;
4045 1.1 christos if (!ppc_elf_create_got (htab->elf.dynobj, info))
4046 1.1 christos return FALSE;
4047 1.1 christos }
4048 1.1 christos if (h != NULL)
4049 1.1 christos {
4050 1.1 christos h->got.refcount += 1;
4051 1.1 christos ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4052 1.1 christos }
4053 1.1 christos else
4054 1.1 christos /* This is a global offset table entry for a local symbol. */
4055 1.1 christos if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4056 1.1 christos return FALSE;
4057 1.1 christos
4058 1.1 christos /* We may also need a plt entry if the symbol turns out to be
4059 1.1 christos an ifunc. */
4060 1.1 christos if (h != NULL && !info->shared)
4061 1.1 christos {
4062 1.1 christos if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4063 1.1 christos return FALSE;
4064 1.1 christos }
4065 1.1 christos break;
4066 1.1 christos
4067 1.1 christos /* Indirect .sdata relocation. */
4068 1.1 christos case R_PPC_EMB_SDAI16:
4069 1.1 christos if (info->shared)
4070 1.1 christos {
4071 1.1 christos bad_shared_reloc (abfd, r_type);
4072 1.1 christos return FALSE;
4073 1.1 christos }
4074 1.1 christos if (htab->sdata[0].section == NULL
4075 1.1 christos && !ppc_elf_create_linker_section (abfd, info, 0,
4076 1.1 christos &htab->sdata[0]))
4077 1.1 christos return FALSE;
4078 1.1 christos if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
4079 1.1 christos h, rel))
4080 1.1 christos return FALSE;
4081 1.1 christos if (h != NULL)
4082 1.1 christos {
4083 1.1 christos ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4084 1.1 christos h->non_got_ref = TRUE;
4085 1.1 christos }
4086 1.1 christos break;
4087 1.1 christos
4088 1.1 christos /* Indirect .sdata2 relocation. */
4089 1.1 christos case R_PPC_EMB_SDA2I16:
4090 1.1 christos if (info->shared)
4091 1.1 christos {
4092 1.1 christos bad_shared_reloc (abfd, r_type);
4093 1.1 christos return FALSE;
4094 1.1 christos }
4095 1.1 christos if (htab->sdata[1].section == NULL
4096 1.1 christos && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
4097 1.1 christos &htab->sdata[1]))
4098 1.1 christos return FALSE;
4099 1.1 christos if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
4100 1.1 christos h, rel))
4101 1.1 christos return FALSE;
4102 1.1 christos if (h != NULL)
4103 1.1 christos {
4104 1.1 christos ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4105 1.1 christos h->non_got_ref = TRUE;
4106 1.1 christos }
4107 1.1 christos break;
4108 1.1 christos
4109 1.1 christos case R_PPC_VLE_SDAREL_LO16A:
4110 1.1 christos case R_PPC_VLE_SDAREL_LO16D:
4111 1.1 christos case R_PPC_VLE_SDAREL_HI16A:
4112 1.1 christos case R_PPC_VLE_SDAREL_HI16D:
4113 1.1 christos case R_PPC_VLE_SDAREL_HA16A:
4114 1.1 christos case R_PPC_VLE_SDAREL_HA16D:
4115 1.1 christos case R_PPC_SDAREL16:
4116 1.1 christos if (htab->sdata[0].sym == NULL
4117 1.1 christos && !create_sdata_sym (info, &htab->sdata[0]))
4118 1.1 christos return FALSE;
4119 1.1 christos
4120 1.1 christos if (htab->sdata[1].sym == NULL
4121 1.1 christos && !create_sdata_sym (info, &htab->sdata[1]))
4122 1.1 christos return FALSE;
4123 1.1 christos
4124 1.1 christos if (h != NULL)
4125 1.1 christos {
4126 1.1 christos ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4127 1.1 christos h->non_got_ref = TRUE;
4128 1.1 christos }
4129 1.1 christos break;
4130 1.1 christos
4131 1.1 christos case R_PPC_VLE_REL8:
4132 1.1 christos case R_PPC_VLE_REL15:
4133 1.1 christos case R_PPC_VLE_REL24:
4134 1.1 christos case R_PPC_VLE_LO16A:
4135 1.1 christos case R_PPC_VLE_LO16D:
4136 1.1 christos case R_PPC_VLE_HI16A:
4137 1.1 christos case R_PPC_VLE_HI16D:
4138 1.1 christos case R_PPC_VLE_HA16A:
4139 1.1 christos case R_PPC_VLE_HA16D:
4140 1.1 christos break;
4141 1.1 christos
4142 1.1 christos case R_PPC_EMB_SDA2REL:
4143 1.1 christos if (info->shared)
4144 1.1 christos {
4145 1.1 christos bad_shared_reloc (abfd, r_type);
4146 1.1 christos return FALSE;
4147 1.1 christos }
4148 1.1 christos if (htab->sdata[1].sym == NULL
4149 1.1 christos && !create_sdata_sym (info, &htab->sdata[1]))
4150 1.1 christos return FALSE;
4151 1.1 christos if (h != NULL)
4152 1.1 christos {
4153 1.1 christos ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4154 1.1 christos h->non_got_ref = TRUE;
4155 1.1 christos }
4156 1.1 christos break;
4157 1.1 christos
4158 1.1 christos case R_PPC_VLE_SDA21_LO:
4159 1.1 christos case R_PPC_VLE_SDA21:
4160 1.1 christos case R_PPC_EMB_SDA21:
4161 1.1 christos case R_PPC_EMB_RELSDA:
4162 1.1 christos if (info->shared)
4163 1.1 christos {
4164 1.1 christos bad_shared_reloc (abfd, r_type);
4165 1.1 christos return FALSE;
4166 1.1 christos }
4167 1.1 christos if (htab->sdata[0].sym == NULL
4168 1.1 christos && !create_sdata_sym (info, &htab->sdata[0]))
4169 1.1 christos return FALSE;
4170 1.1 christos if (htab->sdata[1].sym == NULL
4171 1.1 christos && !create_sdata_sym (info, &htab->sdata[1]))
4172 1.1 christos return FALSE;
4173 1.1 christos if (h != NULL)
4174 1.1 christos {
4175 1.1 christos ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4176 1.1 christos h->non_got_ref = TRUE;
4177 1.1 christos }
4178 1.1 christos break;
4179 1.1 christos
4180 1.1 christos case R_PPC_EMB_NADDR32:
4181 1.1 christos case R_PPC_EMB_NADDR16:
4182 1.1 christos case R_PPC_EMB_NADDR16_LO:
4183 1.1 christos case R_PPC_EMB_NADDR16_HI:
4184 1.1 christos case R_PPC_EMB_NADDR16_HA:
4185 1.1 christos if (info->shared)
4186 1.1 christos {
4187 1.1 christos bad_shared_reloc (abfd, r_type);
4188 1.1 christos return FALSE;
4189 1.1 christos }
4190 1.1 christos if (h != NULL)
4191 1.1 christos h->non_got_ref = TRUE;
4192 1.1 christos break;
4193 1.1 christos
4194 1.1 christos case R_PPC_PLTREL24:
4195 1.1 christos if (h == NULL)
4196 1.1 christos break;
4197 1.1 christos /* Fall through */
4198 1.1 christos case R_PPC_PLT32:
4199 1.1 christos case R_PPC_PLTREL32:
4200 1.1 christos case R_PPC_PLT16_LO:
4201 1.1 christos case R_PPC_PLT16_HI:
4202 1.1 christos case R_PPC_PLT16_HA:
4203 1.1 christos #ifdef DEBUG
4204 1.1 christos fprintf (stderr, "Reloc requires a PLT entry\n");
4205 1.1 christos #endif
4206 1.1 christos /* This symbol requires a procedure linkage table entry. We
4207 1.1 christos actually build the entry in finish_dynamic_symbol,
4208 1.1 christos because this might be a case of linking PIC code without
4209 1.1 christos linking in any dynamic objects, in which case we don't
4210 1.1 christos need to generate a procedure linkage table after all. */
4211 1.1 christos
4212 1.1 christos if (h == NULL)
4213 1.1 christos {
4214 1.1 christos /* It does not make sense to have a procedure linkage
4215 1.1 christos table entry for a local symbol. */
4216 1.1 christos info->callbacks->einfo (_("%P: %H: %s reloc against local symbol\n"),
4217 1.1 christos abfd, sec, rel->r_offset,
4218 1.1 christos ppc_elf_howto_table[r_type]->name);
4219 1.1 christos bfd_set_error (bfd_error_bad_value);
4220 1.1 christos return FALSE;
4221 1.1 christos }
4222 1.1 christos else
4223 1.1 christos {
4224 1.1 christos bfd_vma addend = 0;
4225 1.1 christos
4226 1.1 christos if (r_type == R_PPC_PLTREL24)
4227 1.1 christos {
4228 1.1 christos ppc_elf_tdata (abfd)->makes_plt_call = 1;
4229 1.1 christos if (info->shared)
4230 1.1 christos addend = rel->r_addend;
4231 1.1 christos }
4232 1.1 christos h->needs_plt = 1;
4233 1.1 christos if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4234 1.1 christos return FALSE;
4235 1.1 christos }
4236 1.1 christos break;
4237 1.1 christos
4238 1.1 christos /* The following relocations don't need to propagate the
4239 1.1 christos relocation if linking a shared object since they are
4240 1.1 christos section relative. */
4241 1.1 christos case R_PPC_SECTOFF:
4242 1.1 christos case R_PPC_SECTOFF_LO:
4243 1.1 christos case R_PPC_SECTOFF_HI:
4244 1.1 christos case R_PPC_SECTOFF_HA:
4245 1.1 christos case R_PPC_DTPREL16:
4246 1.1 christos case R_PPC_DTPREL16_LO:
4247 1.1 christos case R_PPC_DTPREL16_HI:
4248 1.1 christos case R_PPC_DTPREL16_HA:
4249 1.1 christos case R_PPC_TOC16:
4250 1.1 christos break;
4251 1.1 christos
4252 1.1 christos case R_PPC_REL16:
4253 1.1 christos case R_PPC_REL16_LO:
4254 1.1 christos case R_PPC_REL16_HI:
4255 1.1 christos case R_PPC_REL16_HA:
4256 1.1 christos ppc_elf_tdata (abfd)->has_rel16 = 1;
4257 1.1 christos break;
4258 1.1 christos
4259 1.1 christos /* These are just markers. */
4260 1.1 christos case R_PPC_TLS:
4261 1.1 christos case R_PPC_EMB_MRKREF:
4262 1.1 christos case R_PPC_NONE:
4263 1.1 christos case R_PPC_max:
4264 1.1 christos case R_PPC_RELAX:
4265 1.1 christos case R_PPC_RELAX_PLT:
4266 1.1 christos case R_PPC_RELAX_PLTREL24:
4267 1.1 christos break;
4268 1.1 christos
4269 1.1 christos /* These should only appear in dynamic objects. */
4270 1.1 christos case R_PPC_COPY:
4271 1.1 christos case R_PPC_GLOB_DAT:
4272 1.1 christos case R_PPC_JMP_SLOT:
4273 1.1 christos case R_PPC_RELATIVE:
4274 1.1 christos case R_PPC_IRELATIVE:
4275 1.1 christos break;
4276 1.1 christos
4277 1.1 christos /* These aren't handled yet. We'll report an error later. */
4278 1.1 christos case R_PPC_ADDR30:
4279 1.1 christos case R_PPC_EMB_RELSEC16:
4280 1.1 christos case R_PPC_EMB_RELST_LO:
4281 1.1 christos case R_PPC_EMB_RELST_HI:
4282 1.1 christos case R_PPC_EMB_RELST_HA:
4283 1.1 christos case R_PPC_EMB_BIT_FLD:
4284 1.1 christos break;
4285 1.1 christos
4286 1.1 christos /* This refers only to functions defined in the shared library. */
4287 1.1 christos case R_PPC_LOCAL24PC:
4288 1.1 christos if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4289 1.1 christos {
4290 1.1 christos htab->plt_type = PLT_OLD;
4291 1.1 christos htab->old_bfd = abfd;
4292 1.1 christos }
4293 1.1 christos break;
4294 1.1 christos
4295 1.1 christos /* This relocation describes the C++ object vtable hierarchy.
4296 1.1 christos Reconstruct it for later use during GC. */
4297 1.1 christos case R_PPC_GNU_VTINHERIT:
4298 1.1 christos if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4299 1.1 christos return FALSE;
4300 1.1 christos break;
4301 1.1 christos
4302 1.1 christos /* This relocation describes which C++ vtable entries are actually
4303 1.1 christos used. Record for later use during GC. */
4304 1.1 christos case R_PPC_GNU_VTENTRY:
4305 1.1 christos BFD_ASSERT (h != NULL);
4306 1.1 christos if (h != NULL
4307 1.1 christos && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4308 1.1 christos return FALSE;
4309 1.1 christos break;
4310 1.1 christos
4311 1.1 christos /* We shouldn't really be seeing these. */
4312 1.1 christos case R_PPC_TPREL32:
4313 1.1 christos case R_PPC_TPREL16:
4314 1.1 christos case R_PPC_TPREL16_LO:
4315 1.1 christos case R_PPC_TPREL16_HI:
4316 1.1 christos case R_PPC_TPREL16_HA:
4317 1.1 christos if (!info->executable)
4318 1.1 christos info->flags |= DF_STATIC_TLS;
4319 1.1 christos goto dodyn;
4320 1.1 christos
4321 1.1 christos /* Nor these. */
4322 1.1 christos case R_PPC_DTPMOD32:
4323 1.1 christos case R_PPC_DTPREL32:
4324 1.1 christos goto dodyn;
4325 1.1 christos
4326 1.1 christos case R_PPC_REL32:
4327 1.1 christos if (h == NULL
4328 1.1 christos && got2 != NULL
4329 1.1 christos && (sec->flags & SEC_CODE) != 0
4330 1.1 christos && info->shared
4331 1.1 christos && htab->plt_type == PLT_UNSET)
4332 1.1 christos {
4333 1.1 christos /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4334 1.1 christos the start of a function, which assembles to a REL32
4335 1.1 christos reference to .got2. If we detect one of these, then
4336 1.1 christos force the old PLT layout because the linker cannot
4337 1.1 christos reliably deduce the GOT pointer value needed for
4338 1.1 christos PLT call stubs. */
4339 1.1 christos asection *s;
4340 1.1 christos Elf_Internal_Sym *isym;
4341 1.1 christos
4342 1.1 christos isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4343 1.1 christos abfd, r_symndx);
4344 1.1 christos if (isym == NULL)
4345 1.1 christos return FALSE;
4346 1.1 christos
4347 1.1 christos s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4348 1.1 christos if (s == got2)
4349 1.1 christos {
4350 1.1 christos htab->plt_type = PLT_OLD;
4351 1.1 christos htab->old_bfd = abfd;
4352 1.1 christos }
4353 1.1 christos }
4354 1.1 christos if (h == NULL || h == htab->elf.hgot)
4355 1.1 christos break;
4356 1.1 christos /* fall through */
4357 1.1 christos
4358 1.1 christos case R_PPC_ADDR32:
4359 1.1 christos case R_PPC_ADDR16:
4360 1.1 christos case R_PPC_ADDR16_LO:
4361 1.1 christos case R_PPC_ADDR16_HI:
4362 1.1 christos case R_PPC_ADDR16_HA:
4363 1.1 christos case R_PPC_UADDR32:
4364 1.1 christos case R_PPC_UADDR16:
4365 1.1 christos if (h != NULL && !info->shared)
4366 1.1 christos {
4367 1.1 christos /* We may need a plt entry if the symbol turns out to be
4368 1.1 christos a function defined in a dynamic object. */
4369 1.1 christos if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4370 1.1 christos return FALSE;
4371 1.1 christos
4372 1.1 christos /* We may need a copy reloc too. */
4373 1.1 christos h->non_got_ref = 1;
4374 1.1 christos h->pointer_equality_needed = 1;
4375 1.1 christos }
4376 1.1 christos goto dodyn;
4377 1.1 christos
4378 1.1 christos case R_PPC_REL24:
4379 1.1 christos case R_PPC_REL14:
4380 1.1 christos case R_PPC_REL14_BRTAKEN:
4381 1.1 christos case R_PPC_REL14_BRNTAKEN:
4382 1.1 christos if (h == NULL)
4383 1.1 christos break;
4384 1.1 christos if (h == htab->elf.hgot)
4385 1.1 christos {
4386 1.1 christos if (htab->plt_type == PLT_UNSET)
4387 1.1 christos {
4388 1.1 christos htab->plt_type = PLT_OLD;
4389 1.1 christos htab->old_bfd = abfd;
4390 1.1 christos }
4391 1.1 christos break;
4392 1.1 christos }
4393 1.1 christos /* fall through */
4394 1.1 christos
4395 1.1 christos case R_PPC_ADDR24:
4396 1.1 christos case R_PPC_ADDR14:
4397 1.1 christos case R_PPC_ADDR14_BRTAKEN:
4398 1.1 christos case R_PPC_ADDR14_BRNTAKEN:
4399 1.1 christos if (h != NULL && !info->shared)
4400 1.1 christos {
4401 1.1 christos /* We may need a plt entry if the symbol turns out to be
4402 1.1 christos a function defined in a dynamic object. */
4403 1.1 christos h->needs_plt = 1;
4404 1.1 christos if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4405 1.1 christos return FALSE;
4406 1.1 christos break;
4407 1.1 christos }
4408 1.1 christos
4409 1.1 christos dodyn:
4410 1.1 christos /* If we are creating a shared library, and this is a reloc
4411 1.1 christos against a global symbol, or a non PC relative reloc
4412 1.1 christos against a local symbol, then we need to copy the reloc
4413 1.1 christos into the shared library. However, if we are linking with
4414 1.1 christos -Bsymbolic, we do not need to copy a reloc against a
4415 1.1 christos global symbol which is defined in an object we are
4416 1.1 christos including in the link (i.e., DEF_REGULAR is set). At
4417 1.1 christos this point we have not seen all the input files, so it is
4418 1.1 christos possible that DEF_REGULAR is not set now but will be set
4419 1.1 christos later (it is never cleared). In case of a weak definition,
4420 1.1 christos DEF_REGULAR may be cleared later by a strong definition in
4421 1.1 christos a shared library. We account for that possibility below by
4422 1.1 christos storing information in the dyn_relocs field of the hash
4423 1.1 christos table entry. A similar situation occurs when creating
4424 1.1 christos shared libraries and symbol visibility changes render the
4425 1.1 christos symbol local.
4426 1.1 christos
4427 1.1 christos If on the other hand, we are creating an executable, we
4428 1.1 christos may need to keep relocations for symbols satisfied by a
4429 1.1 christos dynamic library if we manage to avoid copy relocs for the
4430 1.1 christos symbol. */
4431 1.1 christos if ((info->shared
4432 1.1 christos && (must_be_dyn_reloc (info, r_type)
4433 1.1 christos || (h != NULL
4434 1.1 christos && (!SYMBOLIC_BIND (info, h)
4435 1.1 christos || h->root.type == bfd_link_hash_defweak
4436 1.1 christos || !h->def_regular))))
4437 1.1 christos || (ELIMINATE_COPY_RELOCS
4438 1.1 christos && !info->shared
4439 1.1 christos && h != NULL
4440 1.1 christos && (h->root.type == bfd_link_hash_defweak
4441 1.1 christos || !h->def_regular)))
4442 1.1 christos {
4443 1.1 christos #ifdef DEBUG
4444 1.1 christos fprintf (stderr,
4445 1.1 christos "ppc_elf_check_relocs needs to "
4446 1.1 christos "create relocation for %s\n",
4447 1.1 christos (h && h->root.root.string
4448 1.1 christos ? h->root.root.string : "<unknown>"));
4449 1.1 christos #endif
4450 1.1 christos if (sreloc == NULL)
4451 1.1 christos {
4452 1.1 christos if (htab->elf.dynobj == NULL)
4453 1.1 christos htab->elf.dynobj = abfd;
4454 1.1 christos
4455 1.1 christos sreloc = _bfd_elf_make_dynamic_reloc_section
4456 1.1 christos (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4457 1.1 christos
4458 1.1 christos if (sreloc == NULL)
4459 1.1 christos return FALSE;
4460 1.1 christos }
4461 1.1 christos
4462 1.1 christos /* If this is a global symbol, we count the number of
4463 1.1 christos relocations we need for this symbol. */
4464 1.1 christos if (h != NULL)
4465 1.1 christos {
4466 1.1 christos struct elf_dyn_relocs *p;
4467 1.1 christos struct elf_dyn_relocs **rel_head;
4468 1.1 christos
4469 1.1 christos rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4470 1.1 christos p = *rel_head;
4471 1.1 christos if (p == NULL || p->sec != sec)
4472 1.1 christos {
4473 1.1 christos p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4474 1.1 christos if (p == NULL)
4475 1.1 christos return FALSE;
4476 1.1 christos p->next = *rel_head;
4477 1.1 christos *rel_head = p;
4478 1.1 christos p->sec = sec;
4479 1.1 christos p->count = 0;
4480 1.1 christos p->pc_count = 0;
4481 1.1 christos }
4482 1.1 christos p->count += 1;
4483 1.1 christos if (!must_be_dyn_reloc (info, r_type))
4484 1.1 christos p->pc_count += 1;
4485 1.1 christos }
4486 1.1 christos else
4487 1.1 christos {
4488 1.1 christos /* Track dynamic relocs needed for local syms too.
4489 1.1 christos We really need local syms available to do this
4490 1.1 christos easily. Oh well. */
4491 1.1 christos struct ppc_dyn_relocs *p;
4492 1.1 christos struct ppc_dyn_relocs **rel_head;
4493 1.1 christos bfd_boolean is_ifunc;
4494 1.1 christos asection *s;
4495 1.1 christos void *vpp;
4496 1.1 christos Elf_Internal_Sym *isym;
4497 1.1 christos
4498 1.1 christos isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4499 1.1 christos abfd, r_symndx);
4500 1.1 christos if (isym == NULL)
4501 1.1 christos return FALSE;
4502 1.1 christos
4503 1.1 christos s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4504 1.1 christos if (s == NULL)
4505 1.1 christos s = sec;
4506 1.1 christos
4507 1.1 christos vpp = &elf_section_data (s)->local_dynrel;
4508 1.1 christos rel_head = (struct ppc_dyn_relocs **) vpp;
4509 1.1 christos is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4510 1.1 christos p = *rel_head;
4511 1.1 christos if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4512 1.1 christos p = p->next;
4513 1.1 christos if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4514 1.1 christos {
4515 1.1 christos p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4516 1.1 christos if (p == NULL)
4517 1.1 christos return FALSE;
4518 1.1 christos p->next = *rel_head;
4519 1.1 christos *rel_head = p;
4520 1.1 christos p->sec = sec;
4521 1.1 christos p->ifunc = is_ifunc;
4522 1.1 christos p->count = 0;
4523 1.1 christos }
4524 1.1 christos p->count += 1;
4525 1.1 christos }
4526 1.1 christos }
4527 1.1 christos
4528 1.1 christos break;
4529 1.1 christos }
4530 1.1 christos }
4531 1.1 christos
4532 1.1 christos return TRUE;
4533 1.1 christos }
4534 1.1 christos
4535 1.1 christos
4537 1.1 christos /* Merge object attributes from IBFD into OBFD. Raise an error if
4538 1.1 christos there are conflicting attributes. */
4539 1.1 christos static bfd_boolean
4540 1.1 christos ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4541 1.1 christos {
4542 1.1 christos obj_attribute *in_attr, *in_attrs;
4543 1.1 christos obj_attribute *out_attr, *out_attrs;
4544 1.1 christos
4545 1.1 christos if (!elf_known_obj_attributes_proc (obfd)[0].i)
4546 1.1 christos {
4547 1.1 christos /* This is the first object. Copy the attributes. */
4548 1.1 christos _bfd_elf_copy_obj_attributes (ibfd, obfd);
4549 1.1 christos
4550 1.1 christos /* Use the Tag_null value to indicate the attributes have been
4551 1.1 christos initialized. */
4552 1.1 christos elf_known_obj_attributes_proc (obfd)[0].i = 1;
4553 1.1 christos
4554 1.1 christos return TRUE;
4555 1.1 christos }
4556 1.1 christos
4557 1.1 christos in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4558 1.1 christos out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4559 1.1 christos
4560 1.1 christos /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4561 1.1 christos non-conflicting ones. */
4562 1.1 christos in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4563 1.1 christos out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4564 1.1 christos if (in_attr->i != out_attr->i)
4565 1.1 christos {
4566 1.1 christos out_attr->type = 1;
4567 1.1 christos if (out_attr->i == 0)
4568 1.1 christos out_attr->i = in_attr->i;
4569 1.1 christos else if (in_attr->i == 0)
4570 1.1 christos ;
4571 1.1 christos else if (out_attr->i == 1 && in_attr->i == 2)
4572 1.1 christos _bfd_error_handler
4573 1.1 christos (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4574 1.1 christos else if (out_attr->i == 1 && in_attr->i == 3)
4575 1.1 christos _bfd_error_handler
4576 1.1 christos (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4577 1.1 christos obfd, ibfd);
4578 1.1 christos else if (out_attr->i == 3 && in_attr->i == 1)
4579 1.1 christos _bfd_error_handler
4580 1.1 christos (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4581 1.1 christos ibfd, obfd);
4582 1.1 christos else if (out_attr->i == 3 && in_attr->i == 2)
4583 1.1 christos _bfd_error_handler
4584 1.1 christos (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4585 1.1 christos ibfd, obfd);
4586 1.1 christos else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
4587 1.1 christos _bfd_error_handler
4588 1.1 christos (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4589 1.1 christos else if (in_attr->i > 3)
4590 1.1 christos _bfd_error_handler
4591 1.1 christos (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
4592 1.1 christos in_attr->i);
4593 1.1 christos else
4594 1.1 christos _bfd_error_handler
4595 1.1 christos (_("Warning: %B uses unknown floating point ABI %d"), obfd,
4596 1.1 christos out_attr->i);
4597 1.1 christos }
4598 1.1 christos
4599 1.1 christos /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4600 1.1 christos merge non-conflicting ones. */
4601 1.1 christos in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4602 1.1 christos out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4603 1.1 christos if (in_attr->i != out_attr->i)
4604 1.1 christos {
4605 1.1 christos const char *in_abi = NULL, *out_abi = NULL;
4606 1.1 christos
4607 1.1 christos switch (in_attr->i)
4608 1.1 christos {
4609 1.1 christos case 1: in_abi = "generic"; break;
4610 1.1 christos case 2: in_abi = "AltiVec"; break;
4611 1.1 christos case 3: in_abi = "SPE"; break;
4612 1.1 christos }
4613 1.1 christos
4614 1.1 christos switch (out_attr->i)
4615 1.1 christos {
4616 1.1 christos case 1: out_abi = "generic"; break;
4617 1.1 christos case 2: out_abi = "AltiVec"; break;
4618 1.1 christos case 3: out_abi = "SPE"; break;
4619 1.1 christos }
4620 1.1 christos
4621 1.1 christos out_attr->type = 1;
4622 1.1 christos if (out_attr->i == 0)
4623 1.1 christos out_attr->i = in_attr->i;
4624 1.1 christos else if (in_attr->i == 0)
4625 1.1 christos ;
4626 1.1 christos /* For now, allow generic to transition to AltiVec or SPE
4627 1.1 christos without a warning. If GCC marked files with their stack
4628 1.1 christos alignment and used don't-care markings for files which are
4629 1.1 christos not affected by the vector ABI, we could warn about this
4630 1.1 christos case too. */
4631 1.1 christos else if (out_attr->i == 1)
4632 1.1 christos out_attr->i = in_attr->i;
4633 1.1 christos else if (in_attr->i == 1)
4634 1.1 christos ;
4635 1.1 christos else if (in_abi == NULL)
4636 1.1 christos _bfd_error_handler
4637 1.1 christos (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4638 1.1 christos in_attr->i);
4639 1.1 christos else if (out_abi == NULL)
4640 1.1 christos _bfd_error_handler
4641 1.1 christos (_("Warning: %B uses unknown vector ABI %d"), obfd,
4642 1.1 christos in_attr->i);
4643 1.1 christos else
4644 1.1 christos _bfd_error_handler
4645 1.1 christos (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4646 1.1 christos ibfd, obfd, in_abi, out_abi);
4647 1.1 christos }
4648 1.1 christos
4649 1.1 christos /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4650 1.1 christos and merge non-conflicting ones. */
4651 1.1 christos in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4652 1.1 christos out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4653 1.1 christos if (in_attr->i != out_attr->i)
4654 1.1 christos {
4655 1.1 christos out_attr->type = 1;
4656 1.1 christos if (out_attr->i == 0)
4657 1.1 christos out_attr->i = in_attr->i;
4658 1.1 christos else if (in_attr->i == 0)
4659 1.1 christos ;
4660 1.1 christos else if (out_attr->i == 1 && in_attr->i == 2)
4661 1.1 christos _bfd_error_handler
4662 1.1 christos (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4663 1.1 christos else if (out_attr->i == 2 && in_attr->i == 1)
4664 1.1 christos _bfd_error_handler
4665 1.1 christos (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4666 1.1 christos else if (in_attr->i > 2)
4667 1.1 christos _bfd_error_handler
4668 1.1 christos (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4669 1.1 christos in_attr->i);
4670 1.1 christos else
4671 1.1 christos _bfd_error_handler
4672 1.1 christos (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4673 1.1 christos out_attr->i);
4674 1.1 christos }
4675 1.1 christos
4676 1.1 christos /* Merge Tag_compatibility attributes and any common GNU ones. */
4677 1.1 christos _bfd_elf_merge_object_attributes (ibfd, obfd);
4678 1.1 christos
4679 1.1 christos return TRUE;
4680 1.1 christos }
4681 1.1 christos
4682 1.1 christos /* Merge backend specific data from an object file to the output
4683 1.1 christos object file when linking. */
4684 1.1 christos
4685 1.1 christos static bfd_boolean
4686 1.1 christos ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4687 1.1 christos {
4688 1.1 christos flagword old_flags;
4689 1.1 christos flagword new_flags;
4690 1.1 christos bfd_boolean error;
4691 1.1 christos
4692 1.1 christos if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4693 1.1 christos return TRUE;
4694 1.1 christos
4695 1.1 christos /* Check if we have the same endianness. */
4696 1.1 christos if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4697 1.1 christos return FALSE;
4698 1.1 christos
4699 1.1 christos if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4700 1.1 christos return FALSE;
4701 1.1 christos
4702 1.1 christos new_flags = elf_elfheader (ibfd)->e_flags;
4703 1.1 christos old_flags = elf_elfheader (obfd)->e_flags;
4704 1.1 christos if (!elf_flags_init (obfd))
4705 1.1 christos {
4706 1.1 christos /* First call, no flags set. */
4707 1.1 christos elf_flags_init (obfd) = TRUE;
4708 1.1 christos elf_elfheader (obfd)->e_flags = new_flags;
4709 1.1 christos }
4710 1.1 christos
4711 1.1 christos /* Compatible flags are ok. */
4712 1.1 christos else if (new_flags == old_flags)
4713 1.1 christos ;
4714 1.1 christos
4715 1.1 christos /* Incompatible flags. */
4716 1.1 christos else
4717 1.1 christos {
4718 1.1 christos /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4719 1.1 christos to be linked with either. */
4720 1.1 christos error = FALSE;
4721 1.1 christos if ((new_flags & EF_PPC_RELOCATABLE) != 0
4722 1.1 christos && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4723 1.1 christos {
4724 1.1 christos error = TRUE;
4725 1.1 christos (*_bfd_error_handler)
4726 1.1 christos (_("%B: compiled with -mrelocatable and linked with "
4727 1.1 christos "modules compiled normally"), ibfd);
4728 1.1 christos }
4729 1.1 christos else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4730 1.1 christos && (old_flags & EF_PPC_RELOCATABLE) != 0)
4731 1.1 christos {
4732 1.1 christos error = TRUE;
4733 1.1 christos (*_bfd_error_handler)
4734 1.1 christos (_("%B: compiled normally and linked with "
4735 1.1 christos "modules compiled with -mrelocatable"), ibfd);
4736 1.1 christos }
4737 1.1 christos
4738 1.1 christos /* The output is -mrelocatable-lib iff both the input files are. */
4739 1.1 christos if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4740 1.1 christos elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4741 1.1 christos
4742 1.1 christos /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4743 1.1 christos but each input file is either -mrelocatable or -mrelocatable-lib. */
4744 1.1 christos if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4745 1.1 christos && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4746 1.1 christos && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4747 1.1 christos elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4748 1.1 christos
4749 1.1 christos /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4750 1.1 christos any module uses it. */
4751 1.1 christos elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4752 1.1 christos
4753 1.1 christos new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4754 1.1 christos old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4755 1.1 christos
4756 1.1 christos /* Warn about any other mismatches. */
4757 1.1 christos if (new_flags != old_flags)
4758 1.1 christos {
4759 1.1 christos error = TRUE;
4760 1.1 christos (*_bfd_error_handler)
4761 1.1 christos (_("%B: uses different e_flags (0x%lx) fields "
4762 1.1 christos "than previous modules (0x%lx)"),
4763 1.1 christos ibfd, (long) new_flags, (long) old_flags);
4764 1.1 christos }
4765 1.1 christos
4766 1.1 christos if (error)
4767 1.1 christos {
4768 1.1 christos bfd_set_error (bfd_error_bad_value);
4769 1.1 christos return FALSE;
4770 1.1 christos }
4771 1.1 christos }
4772 1.1 christos
4773 1.1 christos return TRUE;
4774 1.1 christos }
4775 1.1 christos
4776 1.1 christos static void
4777 1.1 christos ppc_elf_vle_split16 (bfd *output_bfd, bfd_byte *contents,
4778 1.1 christos bfd_vma offset, bfd_vma relocation,
4779 1.1 christos split16_format_type split16_format)
4780 1.1 christos
4781 1.1 christos {
4782 1.1 christos bfd_vma insn, top5, bottom11;
4783 1.1 christos
4784 1.1 christos insn = bfd_get_32 (output_bfd, contents + offset);
4785 1.1 christos top5 = relocation >> 11;
4786 1.1 christos top5 = top5 << (split16_format == split16a_type ? 20 : 16);
4787 1.1 christos bottom11 = relocation & 0x7ff;
4788 1.1 christos insn |= top5;
4789 1.1 christos insn |= bottom11;
4790 1.1 christos bfd_put_32 (output_bfd, insn, contents + offset);
4791 1.1 christos }
4792 1.1 christos
4793 1.1 christos
4794 1.1 christos /* Choose which PLT scheme to use, and set .plt flags appropriately.
4796 1.1 christos Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4797 1.1 christos int
4798 1.1 christos ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4799 1.1 christos struct bfd_link_info *info,
4800 1.1 christos enum ppc_elf_plt_type plt_style,
4801 1.1 christos int emit_stub_syms)
4802 1.1 christos {
4803 1.1 christos struct ppc_elf_link_hash_table *htab;
4804 1.1 christos flagword flags;
4805 1.1 christos
4806 1.1 christos htab = ppc_elf_hash_table (info);
4807 1.1 christos
4808 1.1 christos htab->emit_stub_syms = emit_stub_syms;
4809 1.1 christos
4810 1.1 christos if (htab->plt_type == PLT_UNSET)
4811 1.1 christos {
4812 1.1 christos struct elf_link_hash_entry *h;
4813 1.1 christos
4814 1.1 christos if (plt_style == PLT_OLD)
4815 1.1 christos htab->plt_type = PLT_OLD;
4816 1.1 christos else if (info->shared
4817 1.1 christos && htab->elf.dynamic_sections_created
4818 1.1 christos && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4819 1.1 christos FALSE, FALSE, TRUE)) != NULL
4820 1.1 christos && (h->type == STT_FUNC
4821 1.1 christos || h->needs_plt)
4822 1.1 christos && h->ref_regular
4823 1.1 christos && !(SYMBOL_CALLS_LOCAL (info, h)
4824 1.1 christos || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4825 1.1 christos && h->root.type == bfd_link_hash_undefweak)))
4826 1.1 christos {
4827 1.1 christos /* Profiling of shared libs (and pies) is not supported with
4828 1.1 christos secure plt, because ppc32 does profiling before a
4829 1.1 christos function prologue and a secure plt pic call stubs needs
4830 1.1 christos r30 to be set up. */
4831 1.1 christos htab->plt_type = PLT_OLD;
4832 1.1 christos }
4833 1.1 christos else
4834 1.1 christos {
4835 1.1 christos bfd *ibfd;
4836 1.1 christos enum ppc_elf_plt_type plt_type = plt_style;
4837 1.1 christos
4838 1.1 christos /* Look through the reloc flags left by ppc_elf_check_relocs.
4839 1.1 christos Use the old style bss plt if a file makes plt calls
4840 1.1 christos without using the new relocs, and if ld isn't given
4841 1.1 christos --secure-plt and we never see REL16 relocs. */
4842 1.1 christos if (plt_type == PLT_UNSET)
4843 1.1 christos plt_type = PLT_OLD;
4844 1.1 christos for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
4845 1.1 christos if (is_ppc_elf (ibfd))
4846 1.1 christos {
4847 1.1 christos if (ppc_elf_tdata (ibfd)->has_rel16)
4848 1.1 christos plt_type = PLT_NEW;
4849 1.1 christos else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4850 1.1 christos {
4851 1.1 christos plt_type = PLT_OLD;
4852 1.1 christos htab->old_bfd = ibfd;
4853 1.1 christos break;
4854 1.1 christos }
4855 1.1 christos }
4856 1.1 christos htab->plt_type = plt_type;
4857 1.1 christos }
4858 1.1 christos }
4859 1.1 christos if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
4860 1.1 christos {
4861 1.1 christos if (htab->old_bfd != NULL)
4862 1.1 christos info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
4863 1.1 christos htab->old_bfd);
4864 1.1 christos else
4865 1.1 christos info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
4866 1.1 christos }
4867 1.1 christos
4868 1.1 christos BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4869 1.1 christos
4870 1.1 christos if (htab->plt_type == PLT_NEW)
4871 1.1 christos {
4872 1.1 christos flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4873 1.1 christos | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4874 1.1 christos
4875 1.1 christos /* The new PLT is a loaded section. */
4876 1.1 christos if (htab->plt != NULL
4877 1.1 christos && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4878 1.1 christos return -1;
4879 1.1 christos
4880 1.1 christos /* The new GOT is not executable. */
4881 1.1 christos if (htab->got != NULL
4882 1.1 christos && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4883 1.1 christos return -1;
4884 1.1 christos }
4885 1.1 christos else
4886 1.1 christos {
4887 1.1 christos /* Stop an unused .glink section from affecting .text alignment. */
4888 1.1 christos if (htab->glink != NULL
4889 1.1 christos && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4890 1.1 christos return -1;
4891 1.1 christos }
4892 1.1 christos return htab->plt_type == PLT_NEW;
4893 1.1 christos }
4894 1.1 christos
4895 1.1 christos /* Return the section that should be marked against GC for a given
4897 1.1 christos relocation. */
4898 1.1 christos
4899 1.1 christos static asection *
4900 1.1 christos ppc_elf_gc_mark_hook (asection *sec,
4901 1.1 christos struct bfd_link_info *info,
4902 1.1 christos Elf_Internal_Rela *rel,
4903 1.1 christos struct elf_link_hash_entry *h,
4904 1.1 christos Elf_Internal_Sym *sym)
4905 1.1 christos {
4906 1.1 christos if (h != NULL)
4907 1.1 christos switch (ELF32_R_TYPE (rel->r_info))
4908 1.1 christos {
4909 1.1 christos case R_PPC_GNU_VTINHERIT:
4910 1.1 christos case R_PPC_GNU_VTENTRY:
4911 1.1 christos return NULL;
4912 1.1 christos }
4913 1.1 christos
4914 1.1 christos return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4915 1.1 christos }
4916 1.1 christos
4917 1.1 christos /* Update the got, plt and dynamic reloc reference counts for the
4918 1.1 christos section being removed. */
4919 1.1 christos
4920 1.1 christos static bfd_boolean
4921 1.1 christos ppc_elf_gc_sweep_hook (bfd *abfd,
4922 1.1 christos struct bfd_link_info *info,
4923 1.1 christos asection *sec,
4924 1.1 christos const Elf_Internal_Rela *relocs)
4925 1.1 christos {
4926 1.1 christos struct ppc_elf_link_hash_table *htab;
4927 1.1 christos Elf_Internal_Shdr *symtab_hdr;
4928 1.1 christos struct elf_link_hash_entry **sym_hashes;
4929 1.1 christos bfd_signed_vma *local_got_refcounts;
4930 1.1 christos const Elf_Internal_Rela *rel, *relend;
4931 1.1 christos asection *got2;
4932 1.1 christos
4933 1.1 christos if (info->relocatable)
4934 1.1 christos return TRUE;
4935 1.1 christos
4936 1.1 christos if ((sec->flags & SEC_ALLOC) == 0)
4937 1.1 christos return TRUE;
4938 1.1 christos
4939 1.1 christos elf_section_data (sec)->local_dynrel = NULL;
4940 1.1 christos
4941 1.1 christos htab = ppc_elf_hash_table (info);
4942 1.1 christos symtab_hdr = &elf_symtab_hdr (abfd);
4943 1.1 christos sym_hashes = elf_sym_hashes (abfd);
4944 1.1 christos local_got_refcounts = elf_local_got_refcounts (abfd);
4945 1.1 christos got2 = bfd_get_section_by_name (abfd, ".got2");
4946 1.1 christos
4947 1.1 christos relend = relocs + sec->reloc_count;
4948 1.1 christos for (rel = relocs; rel < relend; rel++)
4949 1.1 christos {
4950 1.1 christos unsigned long r_symndx;
4951 1.1 christos enum elf_ppc_reloc_type r_type;
4952 1.1 christos struct elf_link_hash_entry *h = NULL;
4953 1.1 christos
4954 1.1 christos r_symndx = ELF32_R_SYM (rel->r_info);
4955 1.1 christos if (r_symndx >= symtab_hdr->sh_info)
4956 1.1 christos {
4957 1.1 christos struct elf_dyn_relocs **pp, *p;
4958 1.1 christos struct ppc_elf_link_hash_entry *eh;
4959 1.1 christos
4960 1.1 christos h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4961 1.1 christos while (h->root.type == bfd_link_hash_indirect
4962 1.1 christos || h->root.type == bfd_link_hash_warning)
4963 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
4964 1.1 christos eh = (struct ppc_elf_link_hash_entry *) h;
4965 1.1 christos
4966 1.1 christos for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4967 1.1 christos if (p->sec == sec)
4968 1.1 christos {
4969 1.1 christos /* Everything must go for SEC. */
4970 1.1 christos *pp = p->next;
4971 1.1 christos break;
4972 1.1 christos }
4973 1.1 christos }
4974 1.1 christos
4975 1.1 christos r_type = ELF32_R_TYPE (rel->r_info);
4976 1.1 christos if (!htab->is_vxworks
4977 1.1 christos && h == NULL
4978 1.1 christos && local_got_refcounts != NULL
4979 1.1 christos && (!info->shared
4980 1.1 christos || is_branch_reloc (r_type)))
4981 1.1 christos {
4982 1.1 christos struct plt_entry **local_plt = (struct plt_entry **)
4983 1.1 christos (local_got_refcounts + symtab_hdr->sh_info);
4984 1.1 christos char *local_got_tls_masks = (char *)
4985 1.1 christos (local_plt + symtab_hdr->sh_info);
4986 1.1 christos if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
4987 1.1 christos {
4988 1.1 christos struct plt_entry **ifunc = local_plt + r_symndx;
4989 1.1 christos bfd_vma addend = 0;
4990 1.1 christos struct plt_entry *ent;
4991 1.1 christos
4992 1.1 christos if (r_type == R_PPC_PLTREL24 && info->shared)
4993 1.1 christos addend = rel->r_addend;
4994 1.1 christos ent = find_plt_ent (ifunc, got2, addend);
4995 1.1 christos if (ent->plt.refcount > 0)
4996 1.1 christos ent->plt.refcount -= 1;
4997 1.1 christos continue;
4998 1.1 christos }
4999 1.1 christos }
5000 1.1 christos
5001 1.1 christos switch (r_type)
5002 1.1 christos {
5003 1.1 christos case R_PPC_GOT_TLSLD16:
5004 1.1 christos case R_PPC_GOT_TLSLD16_LO:
5005 1.1 christos case R_PPC_GOT_TLSLD16_HI:
5006 1.1 christos case R_PPC_GOT_TLSLD16_HA:
5007 1.1 christos case R_PPC_GOT_TLSGD16:
5008 1.1 christos case R_PPC_GOT_TLSGD16_LO:
5009 1.1 christos case R_PPC_GOT_TLSGD16_HI:
5010 1.1 christos case R_PPC_GOT_TLSGD16_HA:
5011 1.1 christos case R_PPC_GOT_TPREL16:
5012 1.1 christos case R_PPC_GOT_TPREL16_LO:
5013 1.1 christos case R_PPC_GOT_TPREL16_HI:
5014 1.1 christos case R_PPC_GOT_TPREL16_HA:
5015 1.1 christos case R_PPC_GOT_DTPREL16:
5016 1.1 christos case R_PPC_GOT_DTPREL16_LO:
5017 1.1 christos case R_PPC_GOT_DTPREL16_HI:
5018 1.1 christos case R_PPC_GOT_DTPREL16_HA:
5019 1.1 christos case R_PPC_GOT16:
5020 1.1 christos case R_PPC_GOT16_LO:
5021 1.1 christos case R_PPC_GOT16_HI:
5022 1.1 christos case R_PPC_GOT16_HA:
5023 1.1 christos if (h != NULL)
5024 1.1 christos {
5025 1.1 christos if (h->got.refcount > 0)
5026 1.1 christos h->got.refcount--;
5027 1.1 christos if (!info->shared)
5028 1.1 christos {
5029 1.1 christos struct plt_entry *ent;
5030 1.1 christos
5031 1.1 christos ent = find_plt_ent (&h->plt.plist, NULL, 0);
5032 1.1 christos if (ent != NULL && ent->plt.refcount > 0)
5033 1.1 christos ent->plt.refcount -= 1;
5034 1.1 christos }
5035 1.1 christos }
5036 1.1 christos else if (local_got_refcounts != NULL)
5037 1.1 christos {
5038 1.1 christos if (local_got_refcounts[r_symndx] > 0)
5039 1.1 christos local_got_refcounts[r_symndx]--;
5040 1.1 christos }
5041 1.1 christos break;
5042 1.1 christos
5043 1.1 christos case R_PPC_REL24:
5044 1.1 christos case R_PPC_REL14:
5045 1.1 christos case R_PPC_REL14_BRTAKEN:
5046 1.1 christos case R_PPC_REL14_BRNTAKEN:
5047 1.1 christos case R_PPC_REL32:
5048 1.1 christos if (h == NULL || h == htab->elf.hgot)
5049 1.1 christos break;
5050 1.1 christos /* Fall thru */
5051 1.1 christos
5052 1.1 christos case R_PPC_ADDR32:
5053 1.1 christos case R_PPC_ADDR24:
5054 1.1 christos case R_PPC_ADDR16:
5055 1.1 christos case R_PPC_ADDR16_LO:
5056 1.1 christos case R_PPC_ADDR16_HI:
5057 1.1 christos case R_PPC_ADDR16_HA:
5058 1.1 christos case R_PPC_ADDR14:
5059 1.1 christos case R_PPC_ADDR14_BRTAKEN:
5060 1.1 christos case R_PPC_ADDR14_BRNTAKEN:
5061 1.1 christos case R_PPC_UADDR32:
5062 1.1 christos case R_PPC_UADDR16:
5063 1.1 christos if (info->shared)
5064 1.1 christos break;
5065 1.1 christos
5066 1.1 christos case R_PPC_PLT32:
5067 1.1 christos case R_PPC_PLTREL24:
5068 1.1 christos case R_PPC_PLTREL32:
5069 1.1 christos case R_PPC_PLT16_LO:
5070 1.1 christos case R_PPC_PLT16_HI:
5071 1.1 christos case R_PPC_PLT16_HA:
5072 1.1 christos if (h != NULL)
5073 1.1 christos {
5074 1.1 christos bfd_vma addend = 0;
5075 1.1 christos struct plt_entry *ent;
5076 1.1 christos
5077 1.1 christos if (r_type == R_PPC_PLTREL24 && info->shared)
5078 1.1 christos addend = rel->r_addend;
5079 1.1 christos ent = find_plt_ent (&h->plt.plist, got2, addend);
5080 1.1 christos if (ent != NULL && ent->plt.refcount > 0)
5081 1.1 christos ent->plt.refcount -= 1;
5082 1.1 christos }
5083 1.1 christos break;
5084 1.1 christos
5085 1.1 christos default:
5086 1.1 christos break;
5087 1.1 christos }
5088 1.1 christos }
5089 1.1 christos return TRUE;
5090 1.1 christos }
5091 1.1 christos
5092 1.1 christos /* Set plt output section type, htab->tls_get_addr, and call the
5094 1.1 christos generic ELF tls_setup function. */
5095 1.1 christos
5096 1.1 christos asection *
5097 1.1 christos ppc_elf_tls_setup (bfd *obfd,
5098 1.1 christos struct bfd_link_info *info,
5099 1.1 christos int no_tls_get_addr_opt)
5100 1.1 christos {
5101 1.1 christos struct ppc_elf_link_hash_table *htab;
5102 1.1 christos
5103 1.1 christos htab = ppc_elf_hash_table (info);
5104 1.1 christos htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5105 1.1 christos FALSE, FALSE, TRUE);
5106 1.1 christos if (!no_tls_get_addr_opt)
5107 1.1 christos {
5108 1.1 christos struct elf_link_hash_entry *opt, *tga;
5109 1.1 christos opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5110 1.1 christos FALSE, FALSE, TRUE);
5111 1.1 christos if (opt != NULL
5112 1.1 christos && (opt->root.type == bfd_link_hash_defined
5113 1.1 christos || opt->root.type == bfd_link_hash_defweak))
5114 1.1 christos {
5115 1.1 christos /* If glibc supports an optimized __tls_get_addr call stub,
5116 1.1 christos signalled by the presence of __tls_get_addr_opt, and we'll
5117 1.1 christos be calling __tls_get_addr via a plt call stub, then
5118 1.1 christos make __tls_get_addr point to __tls_get_addr_opt. */
5119 1.1 christos tga = htab->tls_get_addr;
5120 1.1 christos if (htab->elf.dynamic_sections_created
5121 1.1 christos && tga != NULL
5122 1.1 christos && (tga->type == STT_FUNC
5123 1.1 christos || tga->needs_plt)
5124 1.1 christos && !(SYMBOL_CALLS_LOCAL (info, tga)
5125 1.1 christos || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5126 1.1 christos && tga->root.type == bfd_link_hash_undefweak)))
5127 1.1 christos {
5128 1.1 christos struct plt_entry *ent;
5129 1.1 christos for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5130 1.1 christos if (ent->plt.refcount > 0)
5131 1.1 christos break;
5132 1.1 christos if (ent != NULL)
5133 1.1 christos {
5134 1.1 christos tga->root.type = bfd_link_hash_indirect;
5135 1.1 christos tga->root.u.i.link = &opt->root;
5136 1.1 christos ppc_elf_copy_indirect_symbol (info, opt, tga);
5137 1.1 christos if (opt->dynindx != -1)
5138 1.1 christos {
5139 1.1 christos /* Use __tls_get_addr_opt in dynamic relocations. */
5140 1.1 christos opt->dynindx = -1;
5141 1.1 christos _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5142 1.1 christos opt->dynstr_index);
5143 1.1 christos if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5144 1.1 christos return FALSE;
5145 1.1 christos }
5146 1.1 christos htab->tls_get_addr = opt;
5147 1.1 christos }
5148 1.1 christos }
5149 1.1 christos }
5150 1.1 christos else
5151 1.1 christos no_tls_get_addr_opt = TRUE;
5152 1.1 christos }
5153 1.1 christos htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
5154 1.1 christos if (htab->plt_type == PLT_NEW
5155 1.1 christos && htab->plt != NULL
5156 1.1 christos && htab->plt->output_section != NULL)
5157 1.1 christos {
5158 1.1 christos elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
5159 1.1 christos elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
5160 1.1 christos }
5161 1.1 christos
5162 1.1 christos return _bfd_elf_tls_setup (obfd, info);
5163 1.1 christos }
5164 1.1 christos
5165 1.1 christos /* Return TRUE iff REL is a branch reloc with a global symbol matching
5166 1.1 christos HASH. */
5167 1.1 christos
5168 1.1 christos static bfd_boolean
5169 1.1 christos branch_reloc_hash_match (const bfd *ibfd,
5170 1.1 christos const Elf_Internal_Rela *rel,
5171 1.1 christos const struct elf_link_hash_entry *hash)
5172 1.1 christos {
5173 1.1 christos Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5174 1.1 christos enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5175 1.1 christos unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5176 1.1 christos
5177 1.1 christos if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5178 1.1 christos {
5179 1.1 christos struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5180 1.1 christos struct elf_link_hash_entry *h;
5181 1.1 christos
5182 1.1 christos h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5183 1.1 christos while (h->root.type == bfd_link_hash_indirect
5184 1.1 christos || h->root.type == bfd_link_hash_warning)
5185 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
5186 1.1 christos if (h == hash)
5187 1.1 christos return TRUE;
5188 1.1 christos }
5189 1.1 christos return FALSE;
5190 1.1 christos }
5191 1.1 christos
5192 1.1 christos /* Run through all the TLS relocs looking for optimization
5193 1.1 christos opportunities. */
5194 1.1 christos
5195 1.1 christos bfd_boolean
5196 1.1 christos ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5197 1.1 christos struct bfd_link_info *info)
5198 1.1 christos {
5199 1.1 christos bfd *ibfd;
5200 1.1 christos asection *sec;
5201 1.1 christos struct ppc_elf_link_hash_table *htab;
5202 1.1 christos int pass;
5203 1.1 christos
5204 1.1 christos if (info->relocatable || !info->executable)
5205 1.1 christos return TRUE;
5206 1.1 christos
5207 1.1 christos htab = ppc_elf_hash_table (info);
5208 1.1 christos if (htab == NULL)
5209 1.1 christos return FALSE;
5210 1.1 christos
5211 1.1 christos /* Make two passes through the relocs. First time check that tls
5212 1.1 christos relocs involved in setting up a tls_get_addr call are indeed
5213 1.1 christos followed by such a call. If they are not, don't do any tls
5214 1.1 christos optimization. On the second pass twiddle tls_mask flags to
5215 1.1 christos notify relocate_section that optimization can be done, and
5216 1.1 christos adjust got and plt refcounts. */
5217 1.1 christos for (pass = 0; pass < 2; ++pass)
5218 1.1 christos for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5219 1.1 christos {
5220 1.1 christos Elf_Internal_Sym *locsyms = NULL;
5221 1.1 christos Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5222 1.1 christos asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5223 1.1 christos
5224 1.1 christos for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5225 1.1 christos if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5226 1.1 christos {
5227 1.1 christos Elf_Internal_Rela *relstart, *rel, *relend;
5228 1.1 christos int expecting_tls_get_addr = 0;
5229 1.1 christos
5230 1.1 christos /* Read the relocations. */
5231 1.1 christos relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5232 1.1 christos info->keep_memory);
5233 1.1 christos if (relstart == NULL)
5234 1.1 christos return FALSE;
5235 1.1 christos
5236 1.1 christos relend = relstart + sec->reloc_count;
5237 1.1 christos for (rel = relstart; rel < relend; rel++)
5238 1.1 christos {
5239 1.1 christos enum elf_ppc_reloc_type r_type;
5240 1.1 christos unsigned long r_symndx;
5241 1.1 christos struct elf_link_hash_entry *h = NULL;
5242 1.1 christos char *tls_mask;
5243 1.1 christos char tls_set, tls_clear;
5244 1.1 christos bfd_boolean is_local;
5245 1.1 christos bfd_signed_vma *got_count;
5246 1.1 christos
5247 1.1 christos r_symndx = ELF32_R_SYM (rel->r_info);
5248 1.1 christos if (r_symndx >= symtab_hdr->sh_info)
5249 1.1 christos {
5250 1.1 christos struct elf_link_hash_entry **sym_hashes;
5251 1.1 christos
5252 1.1 christos sym_hashes = elf_sym_hashes (ibfd);
5253 1.1 christos h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5254 1.1 christos while (h->root.type == bfd_link_hash_indirect
5255 1.1 christos || h->root.type == bfd_link_hash_warning)
5256 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
5257 1.1 christos }
5258 1.1 christos
5259 1.1 christos is_local = FALSE;
5260 1.1 christos if (h == NULL
5261 1.1 christos || !h->def_dynamic)
5262 1.1 christos is_local = TRUE;
5263 1.1 christos
5264 1.1 christos r_type = ELF32_R_TYPE (rel->r_info);
5265 1.1 christos /* If this section has old-style __tls_get_addr calls
5266 1.1 christos without marker relocs, then check that each
5267 1.1 christos __tls_get_addr call reloc is preceded by a reloc
5268 1.1 christos that conceivably belongs to the __tls_get_addr arg
5269 1.1 christos setup insn. If we don't find matching arg setup
5270 1.1 christos relocs, don't do any tls optimization. */
5271 1.1 christos if (pass == 0
5272 1.1 christos && sec->has_tls_get_addr_call
5273 1.1 christos && h != NULL
5274 1.1 christos && h == htab->tls_get_addr
5275 1.1 christos && !expecting_tls_get_addr
5276 1.1 christos && is_branch_reloc (r_type))
5277 1.1 christos {
5278 1.1 christos info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5279 1.1 christos "TLS optimization disabled\n",
5280 1.1 christos ibfd, sec, rel->r_offset);
5281 1.1 christos if (elf_section_data (sec)->relocs != relstart)
5282 1.1 christos free (relstart);
5283 1.1 christos return TRUE;
5284 1.1 christos }
5285 1.1 christos
5286 1.1 christos expecting_tls_get_addr = 0;
5287 1.1 christos switch (r_type)
5288 1.1 christos {
5289 1.1 christos case R_PPC_GOT_TLSLD16:
5290 1.1 christos case R_PPC_GOT_TLSLD16_LO:
5291 1.1 christos expecting_tls_get_addr = 1;
5292 1.1 christos /* Fall thru */
5293 1.1 christos
5294 1.1 christos case R_PPC_GOT_TLSLD16_HI:
5295 1.1 christos case R_PPC_GOT_TLSLD16_HA:
5296 1.1 christos /* These relocs should never be against a symbol
5297 1.1 christos defined in a shared lib. Leave them alone if
5298 1.1 christos that turns out to be the case. */
5299 1.1 christos if (!is_local)
5300 1.1 christos continue;
5301 1.1 christos
5302 1.1 christos /* LD -> LE */
5303 1.1 christos tls_set = 0;
5304 1.1 christos tls_clear = TLS_LD;
5305 1.1 christos break;
5306 1.1 christos
5307 1.1 christos case R_PPC_GOT_TLSGD16:
5308 1.1 christos case R_PPC_GOT_TLSGD16_LO:
5309 1.1 christos expecting_tls_get_addr = 1;
5310 1.1 christos /* Fall thru */
5311 1.1 christos
5312 1.1 christos case R_PPC_GOT_TLSGD16_HI:
5313 1.1 christos case R_PPC_GOT_TLSGD16_HA:
5314 1.1 christos if (is_local)
5315 1.1 christos /* GD -> LE */
5316 1.1 christos tls_set = 0;
5317 1.1 christos else
5318 1.1 christos /* GD -> IE */
5319 1.1 christos tls_set = TLS_TLS | TLS_TPRELGD;
5320 1.1 christos tls_clear = TLS_GD;
5321 1.1 christos break;
5322 1.1 christos
5323 1.1 christos case R_PPC_GOT_TPREL16:
5324 1.1 christos case R_PPC_GOT_TPREL16_LO:
5325 1.1 christos case R_PPC_GOT_TPREL16_HI:
5326 1.1 christos case R_PPC_GOT_TPREL16_HA:
5327 1.1 christos if (is_local)
5328 1.1 christos {
5329 1.1 christos /* IE -> LE */
5330 1.1 christos tls_set = 0;
5331 1.1 christos tls_clear = TLS_TPREL;
5332 1.1 christos break;
5333 1.1 christos }
5334 1.1 christos else
5335 1.1 christos continue;
5336 1.1 christos
5337 1.1 christos case R_PPC_TLSGD:
5338 1.1 christos case R_PPC_TLSLD:
5339 1.1 christos expecting_tls_get_addr = 2;
5340 1.1 christos tls_set = 0;
5341 1.1 christos tls_clear = 0;
5342 1.1 christos break;
5343 1.1 christos
5344 1.1 christos default:
5345 1.1 christos continue;
5346 1.1 christos }
5347 1.1 christos
5348 1.1 christos if (pass == 0)
5349 1.1 christos {
5350 1.1 christos if (!expecting_tls_get_addr
5351 1.1 christos || (expecting_tls_get_addr == 1
5352 1.1 christos && !sec->has_tls_get_addr_call))
5353 1.1 christos continue;
5354 1.1 christos
5355 1.1 christos if (rel + 1 < relend
5356 1.1 christos && branch_reloc_hash_match (ibfd, rel + 1,
5357 1.1 christos htab->tls_get_addr))
5358 1.1 christos continue;
5359 1.1 christos
5360 1.1 christos /* Uh oh, we didn't find the expected call. We
5361 1.1 christos could just mark this symbol to exclude it
5362 1.1 christos from tls optimization but it's safer to skip
5363 1.1 christos the entire optimization. */
5364 1.1 christos info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5365 1.1 christos "TLS optimization disabled\n"),
5366 1.1 christos ibfd, sec, rel->r_offset);
5367 1.1 christos if (elf_section_data (sec)->relocs != relstart)
5368 1.1 christos free (relstart);
5369 1.1 christos return TRUE;
5370 1.1 christos }
5371 1.1 christos
5372 1.1 christos if (expecting_tls_get_addr)
5373 1.1 christos {
5374 1.1 christos struct plt_entry *ent;
5375 1.1 christos bfd_vma addend = 0;
5376 1.1 christos
5377 1.1 christos if (info->shared
5378 1.1 christos && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5379 1.1 christos addend = rel[1].r_addend;
5380 1.1 christos ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5381 1.1 christos got2, addend);
5382 1.1 christos if (ent != NULL && ent->plt.refcount > 0)
5383 1.1 christos ent->plt.refcount -= 1;
5384 1.1 christos
5385 1.1 christos if (expecting_tls_get_addr == 2)
5386 1.1 christos continue;
5387 1.1 christos }
5388 1.1 christos
5389 1.1 christos if (h != NULL)
5390 1.1 christos {
5391 1.1 christos tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5392 1.1 christos got_count = &h->got.refcount;
5393 1.1 christos }
5394 1.1 christos else
5395 1.1 christos {
5396 1.1 christos bfd_signed_vma *lgot_refs;
5397 1.1 christos struct plt_entry **local_plt;
5398 1.1 christos char *lgot_masks;
5399 1.1 christos
5400 1.1 christos if (locsyms == NULL)
5401 1.1 christos {
5402 1.1 christos locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5403 1.1 christos if (locsyms == NULL)
5404 1.1 christos locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5405 1.1 christos symtab_hdr->sh_info,
5406 1.1 christos 0, NULL, NULL, NULL);
5407 1.1 christos if (locsyms == NULL)
5408 1.1 christos {
5409 1.1 christos if (elf_section_data (sec)->relocs != relstart)
5410 1.1 christos free (relstart);
5411 1.1 christos return FALSE;
5412 1.1 christos }
5413 1.1 christos }
5414 1.1 christos lgot_refs = elf_local_got_refcounts (ibfd);
5415 1.1 christos if (lgot_refs == NULL)
5416 1.1 christos abort ();
5417 1.1 christos local_plt = (struct plt_entry **)
5418 1.1 christos (lgot_refs + symtab_hdr->sh_info);
5419 1.1 christos lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5420 1.1 christos tls_mask = &lgot_masks[r_symndx];
5421 1.1 christos got_count = &lgot_refs[r_symndx];
5422 1.1 christos }
5423 1.1 christos
5424 1.1 christos if (tls_set == 0)
5425 1.1 christos {
5426 1.1 christos /* We managed to get rid of a got entry. */
5427 1.1 christos if (*got_count > 0)
5428 1.1 christos *got_count -= 1;
5429 1.1 christos }
5430 1.1 christos
5431 1.1 christos *tls_mask |= tls_set;
5432 1.1 christos *tls_mask &= ~tls_clear;
5433 1.1 christos }
5434 1.1 christos
5435 1.1 christos if (elf_section_data (sec)->relocs != relstart)
5436 1.1 christos free (relstart);
5437 1.1 christos }
5438 1.1 christos
5439 1.1 christos if (locsyms != NULL
5440 1.1 christos && (symtab_hdr->contents != (unsigned char *) locsyms))
5441 1.1 christos {
5442 1.1 christos if (!info->keep_memory)
5443 1.1 christos free (locsyms);
5444 1.1 christos else
5445 1.1 christos symtab_hdr->contents = (unsigned char *) locsyms;
5446 1.1 christos }
5447 1.1 christos }
5448 1.1 christos return TRUE;
5449 1.1 christos }
5450 1.1 christos
5451 1.1 christos /* Return true if we have dynamic relocs that apply to read-only sections. */
5453 1.1 christos
5454 1.1 christos static bfd_boolean
5455 1.1 christos readonly_dynrelocs (struct elf_link_hash_entry *h)
5456 1.1 christos {
5457 1.1 christos struct elf_dyn_relocs *p;
5458 1.1 christos
5459 1.1 christos for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5460 1.1 christos {
5461 1.1 christos asection *s = p->sec->output_section;
5462 1.1 christos
5463 1.1 christos if (s != NULL
5464 1.1 christos && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5465 1.1 christos == (SEC_READONLY | SEC_ALLOC)))
5466 1.1 christos return TRUE;
5467 1.1 christos }
5468 1.1 christos return FALSE;
5469 1.1 christos }
5470 1.1 christos
5471 1.1 christos /* Adjust a symbol defined by a dynamic object and referenced by a
5472 1.1 christos regular object. The current definition is in some section of the
5473 1.1 christos dynamic object, but we're not including those sections. We have to
5474 1.1 christos change the definition to something the rest of the link can
5475 1.1 christos understand. */
5476 1.1 christos
5477 1.1 christos static bfd_boolean
5478 1.1 christos ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5479 1.1 christos struct elf_link_hash_entry *h)
5480 1.1 christos {
5481 1.1 christos struct ppc_elf_link_hash_table *htab;
5482 1.1 christos asection *s;
5483 1.1 christos
5484 1.1 christos #ifdef DEBUG
5485 1.1 christos fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5486 1.1 christos h->root.root.string);
5487 1.1 christos #endif
5488 1.1 christos
5489 1.1 christos /* Make sure we know what is going on here. */
5490 1.1 christos htab = ppc_elf_hash_table (info);
5491 1.1 christos BFD_ASSERT (htab->elf.dynobj != NULL
5492 1.1 christos && (h->needs_plt
5493 1.1 christos || h->type == STT_GNU_IFUNC
5494 1.1 christos || h->u.weakdef != NULL
5495 1.1 christos || (h->def_dynamic
5496 1.1 christos && h->ref_regular
5497 1.1 christos && !h->def_regular)));
5498 1.1 christos
5499 1.1 christos /* Deal with function syms. */
5500 1.1 christos if (h->type == STT_FUNC
5501 1.1 christos || h->type == STT_GNU_IFUNC
5502 1.1 christos || h->needs_plt)
5503 1.1 christos {
5504 1.1 christos /* Clear procedure linkage table information for any symbol that
5505 1.1 christos won't need a .plt entry. */
5506 1.1 christos struct plt_entry *ent;
5507 1.1 christos for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5508 1.1 christos if (ent->plt.refcount > 0)
5509 1.1 christos break;
5510 1.1 christos if (ent == NULL
5511 1.1 christos || (h->type != STT_GNU_IFUNC
5512 1.1 christos && (SYMBOL_CALLS_LOCAL (info, h)
5513 1.1 christos || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5514 1.1 christos && h->root.type == bfd_link_hash_undefweak))))
5515 1.1 christos {
5516 1.1 christos /* A PLT entry is not required/allowed when:
5517 1.1 christos
5518 1.1 christos 1. We are not using ld.so; because then the PLT entry
5519 1.1 christos can't be set up, so we can't use one. In this case,
5520 1.1 christos ppc_elf_adjust_dynamic_symbol won't even be called.
5521 1.1 christos
5522 1.1 christos 2. GC has rendered the entry unused.
5523 1.1 christos
5524 1.1 christos 3. We know for certain that a call to this symbol
5525 1.1 christos will go to this object, or will remain undefined. */
5526 1.1 christos h->plt.plist = NULL;
5527 1.1 christos h->needs_plt = 0;
5528 1.1 christos }
5529 1.1 christos else
5530 1.1 christos {
5531 1.1 christos /* After adjust_dynamic_symbol, non_got_ref set in the
5532 1.1 christos non-shared case means that we have allocated space in
5533 1.1 christos .dynbss for the symbol and thus dyn_relocs for this
5534 1.1 christos symbol should be discarded.
5535 1.1 christos If we get here we know we are making a PLT entry for this
5536 1.1 christos symbol, and in an executable we'd normally resolve
5537 1.1 christos relocations against this symbol to the PLT entry. Allow
5538 1.1 christos dynamic relocs if the reference is weak, and the dynamic
5539 1.1 christos relocs will not cause text relocation. */
5540 1.1 christos if (!h->ref_regular_nonweak
5541 1.1 christos && h->non_got_ref
5542 1.1 christos && h->type != STT_GNU_IFUNC
5543 1.1 christos && !htab->is_vxworks
5544 1.1 christos && !ppc_elf_hash_entry (h)->has_sda_refs
5545 1.1 christos && !readonly_dynrelocs (h))
5546 1.1 christos h->non_got_ref = 0;
5547 1.1 christos }
5548 1.1 christos return TRUE;
5549 1.1 christos }
5550 1.1 christos else
5551 1.1 christos h->plt.plist = NULL;
5552 1.1 christos
5553 1.1 christos /* If this is a weak symbol, and there is a real definition, the
5554 1.1 christos processor independent code will have arranged for us to see the
5555 1.1 christos real definition first, and we can just use the same value. */
5556 1.1 christos if (h->u.weakdef != NULL)
5557 1.1 christos {
5558 1.1 christos BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5559 1.1 christos || h->u.weakdef->root.type == bfd_link_hash_defweak);
5560 1.1 christos h->root.u.def.section = h->u.weakdef->root.u.def.section;
5561 1.1 christos h->root.u.def.value = h->u.weakdef->root.u.def.value;
5562 1.1 christos if (ELIMINATE_COPY_RELOCS)
5563 1.1 christos h->non_got_ref = h->u.weakdef->non_got_ref;
5564 1.1 christos return TRUE;
5565 1.1 christos }
5566 1.1 christos
5567 1.1 christos /* This is a reference to a symbol defined by a dynamic object which
5568 1.1 christos is not a function. */
5569 1.1 christos
5570 1.1 christos /* If we are creating a shared library, we must presume that the
5571 1.1 christos only references to the symbol are via the global offset table.
5572 1.1 christos For such cases we need not do anything here; the relocations will
5573 1.1 christos be handled correctly by relocate_section. */
5574 1.1 christos if (info->shared)
5575 1.1 christos return TRUE;
5576 1.1 christos
5577 1.1 christos /* If there are no references to this symbol that do not use the
5578 1.1 christos GOT, we don't need to generate a copy reloc. */
5579 1.1 christos if (!h->non_got_ref)
5580 1.1 christos return TRUE;
5581 1.1 christos
5582 1.1 christos /* If we didn't find any dynamic relocs in read-only sections, then
5583 1.1 christos we'll be keeping the dynamic relocs and avoiding the copy reloc.
5584 1.1 christos We can't do this if there are any small data relocations. This
5585 1.1 christos doesn't work on VxWorks, where we can not have dynamic
5586 1.1 christos relocations (other than copy and jump slot relocations) in an
5587 1.1 christos executable. */
5588 1.1 christos if (ELIMINATE_COPY_RELOCS
5589 1.1 christos && !ppc_elf_hash_entry (h)->has_sda_refs
5590 1.1 christos && !htab->is_vxworks
5591 1.1 christos && !h->def_regular
5592 1.1 christos && !readonly_dynrelocs (h))
5593 1.1 christos {
5594 1.1 christos h->non_got_ref = 0;
5595 1.1 christos return TRUE;
5596 1.1 christos }
5597 1.1 christos
5598 1.1 christos /* We must allocate the symbol in our .dynbss section, which will
5599 1.1 christos become part of the .bss section of the executable. There will be
5600 1.1 christos an entry for this symbol in the .dynsym section. The dynamic
5601 1.1 christos object will contain position independent code, so all references
5602 1.1 christos from the dynamic object to this symbol will go through the global
5603 1.1 christos offset table. The dynamic linker will use the .dynsym entry to
5604 1.1 christos determine the address it must put in the global offset table, so
5605 1.1 christos both the dynamic object and the regular object will refer to the
5606 1.1 christos same memory location for the variable.
5607 1.1 christos
5608 1.1 christos Of course, if the symbol is referenced using SDAREL relocs, we
5609 1.1 christos must instead allocate it in .sbss. */
5610 1.1 christos
5611 1.1 christos if (ppc_elf_hash_entry (h)->has_sda_refs)
5612 1.1 christos s = htab->dynsbss;
5613 1.1 christos else
5614 1.1 christos s = htab->dynbss;
5615 1.1 christos BFD_ASSERT (s != NULL);
5616 1.1 christos
5617 1.1 christos /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5618 1.1 christos copy the initial value out of the dynamic object and into the
5619 1.1 christos runtime process image. We need to remember the offset into the
5620 1.1 christos .rela.bss section we are going to use. */
5621 1.1 christos if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5622 1.1 christos {
5623 1.1 christos asection *srel;
5624 1.1 christos
5625 1.1 christos if (ppc_elf_hash_entry (h)->has_sda_refs)
5626 1.1 christos srel = htab->relsbss;
5627 1.1 christos else
5628 1.1 christos srel = htab->relbss;
5629 1.1 christos BFD_ASSERT (srel != NULL);
5630 1.1 christos srel->size += sizeof (Elf32_External_Rela);
5631 1.1 christos h->needs_copy = 1;
5632 1.1 christos }
5633 1.1 christos
5634 1.1 christos return _bfd_elf_adjust_dynamic_copy (h, s);
5635 1.1 christos }
5636 1.1 christos
5637 1.1 christos /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5639 1.1 christos xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5640 1.1 christos specifying the addend on the plt relocation. For -fpic code, the sym
5641 1.1 christos is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5642 1.1 christos xxxxxxxx.got2.plt_pic32.<callee>. */
5643 1.1 christos
5644 1.1 christos static bfd_boolean
5645 1.1 christos add_stub_sym (struct plt_entry *ent,
5646 1.1 christos struct elf_link_hash_entry *h,
5647 1.1 christos struct bfd_link_info *info)
5648 1.1 christos {
5649 1.1 christos struct elf_link_hash_entry *sh;
5650 1.1 christos size_t len1, len2, len3;
5651 1.1 christos char *name;
5652 1.1 christos const char *stub;
5653 1.1 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5654 1.1 christos
5655 1.1 christos if (info->shared)
5656 1.1 christos stub = ".plt_pic32.";
5657 1.1 christos else
5658 1.1 christos stub = ".plt_call32.";
5659 1.1 christos
5660 1.1 christos len1 = strlen (h->root.root.string);
5661 1.1 christos len2 = strlen (stub);
5662 1.1 christos len3 = 0;
5663 1.1 christos if (ent->sec)
5664 1.1 christos len3 = strlen (ent->sec->name);
5665 1.1 christos name = bfd_malloc (len1 + len2 + len3 + 9);
5666 1.1 christos if (name == NULL)
5667 1.1 christos return FALSE;
5668 1.1 christos sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5669 1.1 christos if (ent->sec)
5670 1.1 christos memcpy (name + 8, ent->sec->name, len3);
5671 1.1 christos memcpy (name + 8 + len3, stub, len2);
5672 1.1 christos memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5673 1.1 christos sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5674 1.1 christos if (sh == NULL)
5675 1.1 christos return FALSE;
5676 1.1 christos if (sh->root.type == bfd_link_hash_new)
5677 1.1 christos {
5678 1.1 christos sh->root.type = bfd_link_hash_defined;
5679 1.1 christos sh->root.u.def.section = htab->glink;
5680 1.1 christos sh->root.u.def.value = ent->glink_offset;
5681 1.1 christos sh->ref_regular = 1;
5682 1.1 christos sh->def_regular = 1;
5683 1.1 christos sh->ref_regular_nonweak = 1;
5684 1.1 christos sh->forced_local = 1;
5685 1.1 christos sh->non_elf = 0;
5686 1.1 christos }
5687 1.1 christos return TRUE;
5688 1.1 christos }
5689 1.1 christos
5690 1.1 christos /* Allocate NEED contiguous space in .got, and return the offset.
5691 1.1 christos Handles allocation of the got header when crossing 32k. */
5692 1.1 christos
5693 1.1 christos static bfd_vma
5694 1.1 christos allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5695 1.1 christos {
5696 1.1 christos bfd_vma where;
5697 1.1 christos unsigned int max_before_header;
5698 1.1 christos
5699 1.1 christos if (htab->plt_type == PLT_VXWORKS)
5700 1.1 christos {
5701 1.1 christos where = htab->got->size;
5702 1.1 christos htab->got->size += need;
5703 1.1 christos }
5704 1.1 christos else
5705 1.1 christos {
5706 1.1 christos max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5707 1.1 christos if (need <= htab->got_gap)
5708 1.1 christos {
5709 1.1 christos where = max_before_header - htab->got_gap;
5710 1.1 christos htab->got_gap -= need;
5711 1.1 christos }
5712 1.1 christos else
5713 1.1 christos {
5714 1.1 christos if (htab->got->size + need > max_before_header
5715 1.1 christos && htab->got->size <= max_before_header)
5716 1.1 christos {
5717 1.1 christos htab->got_gap = max_before_header - htab->got->size;
5718 1.1 christos htab->got->size = max_before_header + htab->got_header_size;
5719 1.1 christos }
5720 1.1 christos where = htab->got->size;
5721 1.1 christos htab->got->size += need;
5722 1.1 christos }
5723 1.1 christos }
5724 1.1 christos return where;
5725 1.1 christos }
5726 1.1 christos
5727 1.1 christos /* Allocate space in associated reloc sections for dynamic relocs. */
5728 1.1 christos
5729 1.1 christos static bfd_boolean
5730 1.1 christos allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5731 1.1 christos {
5732 1.1 christos struct bfd_link_info *info = inf;
5733 1.1 christos struct ppc_elf_link_hash_entry *eh;
5734 1.1 christos struct ppc_elf_link_hash_table *htab;
5735 1.1 christos struct elf_dyn_relocs *p;
5736 1.1 christos
5737 1.1 christos if (h->root.type == bfd_link_hash_indirect)
5738 1.1 christos return TRUE;
5739 1.1 christos
5740 1.1 christos htab = ppc_elf_hash_table (info);
5741 1.1 christos if (htab->elf.dynamic_sections_created
5742 1.1 christos || h->type == STT_GNU_IFUNC)
5743 1.1 christos {
5744 1.1 christos struct plt_entry *ent;
5745 1.1 christos bfd_boolean doneone = FALSE;
5746 1.1 christos bfd_vma plt_offset = 0, glink_offset = 0;
5747 1.1 christos bfd_boolean dyn;
5748 1.1 christos
5749 1.1 christos for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5750 1.1 christos if (ent->plt.refcount > 0)
5751 1.1 christos {
5752 1.1 christos /* Make sure this symbol is output as a dynamic symbol. */
5753 1.1 christos if (h->dynindx == -1
5754 1.1 christos && !h->forced_local
5755 1.1 christos && !h->def_regular
5756 1.1 christos && htab->elf.dynamic_sections_created)
5757 1.1 christos {
5758 1.1 christos if (! bfd_elf_link_record_dynamic_symbol (info, h))
5759 1.1 christos return FALSE;
5760 1.1 christos }
5761 1.1 christos
5762 1.1 christos dyn = htab->elf.dynamic_sections_created;
5763 1.1 christos if (info->shared
5764 1.1 christos || h->type == STT_GNU_IFUNC
5765 1.1 christos || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5766 1.1 christos {
5767 1.1 christos asection *s = htab->plt;
5768 1.1 christos if (!dyn || h->dynindx == -1)
5769 1.1 christos s = htab->iplt;
5770 1.1 christos
5771 1.1 christos if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5772 1.1 christos {
5773 1.1 christos if (!doneone)
5774 1.1 christos {
5775 1.1 christos plt_offset = s->size;
5776 1.1 christos s->size += 4;
5777 1.1 christos }
5778 1.1 christos ent->plt.offset = plt_offset;
5779 1.1 christos
5780 1.1 christos s = htab->glink;
5781 1.1 christos if (!doneone || info->shared)
5782 1.1 christos {
5783 1.1 christos glink_offset = s->size;
5784 1.1 christos s->size += GLINK_ENTRY_SIZE;
5785 1.1 christos if (h == htab->tls_get_addr
5786 1.1 christos && !htab->no_tls_get_addr_opt)
5787 1.1 christos s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5788 1.1 christos }
5789 1.1 christos if (!doneone
5790 1.1 christos && !info->shared
5791 1.1 christos && h->def_dynamic
5792 1.1 christos && !h->def_regular)
5793 1.1 christos {
5794 1.1 christos h->root.u.def.section = s;
5795 1.1 christos h->root.u.def.value = glink_offset;
5796 1.1 christos }
5797 1.1 christos ent->glink_offset = glink_offset;
5798 1.1 christos
5799 1.1 christos if (htab->emit_stub_syms
5800 1.1 christos && !add_stub_sym (ent, h, info))
5801 1.1 christos return FALSE;
5802 1.1 christos }
5803 1.1 christos else
5804 1.1 christos {
5805 1.1 christos if (!doneone)
5806 1.1 christos {
5807 1.1 christos /* If this is the first .plt entry, make room
5808 1.1 christos for the special first entry. */
5809 1.1 christos if (s->size == 0)
5810 1.1 christos s->size += htab->plt_initial_entry_size;
5811 1.1 christos
5812 1.1 christos /* The PowerPC PLT is actually composed of two
5813 1.1 christos parts, the first part is 2 words (for a load
5814 1.1 christos and a jump), and then there is a remaining
5815 1.1 christos word available at the end. */
5816 1.1 christos plt_offset = (htab->plt_initial_entry_size
5817 1.1 christos + (htab->plt_slot_size
5818 1.1 christos * ((s->size
5819 1.1 christos - htab->plt_initial_entry_size)
5820 1.1 christos / htab->plt_entry_size)));
5821 1.1 christos
5822 1.1 christos /* If this symbol is not defined in a regular
5823 1.1 christos file, and we are not generating a shared
5824 1.1 christos library, then set the symbol to this location
5825 1.1 christos in the .plt. This is to avoid text
5826 1.1 christos relocations, and is required to make
5827 1.1 christos function pointers compare as equal between
5828 1.1 christos the normal executable and the shared library. */
5829 1.1 christos if (! info->shared
5830 1.1 christos && h->def_dynamic
5831 1.1 christos && !h->def_regular)
5832 1.1 christos {
5833 1.1 christos h->root.u.def.section = s;
5834 1.1 christos h->root.u.def.value = plt_offset;
5835 1.1 christos }
5836 1.1 christos
5837 1.1 christos /* Make room for this entry. */
5838 1.1 christos s->size += htab->plt_entry_size;
5839 1.1 christos /* After the 8192nd entry, room for two entries
5840 1.1 christos is allocated. */
5841 1.1 christos if (htab->plt_type == PLT_OLD
5842 1.1 christos && (s->size - htab->plt_initial_entry_size)
5843 1.1 christos / htab->plt_entry_size
5844 1.1 christos > PLT_NUM_SINGLE_ENTRIES)
5845 1.1 christos s->size += htab->plt_entry_size;
5846 1.1 christos }
5847 1.1 christos ent->plt.offset = plt_offset;
5848 1.1 christos }
5849 1.1 christos
5850 1.1 christos /* We also need to make an entry in the .rela.plt section. */
5851 1.1 christos if (!doneone)
5852 1.1 christos {
5853 1.1 christos if (!htab->elf.dynamic_sections_created
5854 1.1 christos || h->dynindx == -1)
5855 1.1 christos htab->reliplt->size += sizeof (Elf32_External_Rela);
5856 1.1 christos else
5857 1.1 christos {
5858 1.1 christos htab->relplt->size += sizeof (Elf32_External_Rela);
5859 1.1 christos
5860 1.1 christos if (htab->plt_type == PLT_VXWORKS)
5861 1.1 christos {
5862 1.1 christos /* Allocate space for the unloaded relocations. */
5863 1.1 christos if (!info->shared
5864 1.1 christos && htab->elf.dynamic_sections_created)
5865 1.1 christos {
5866 1.1 christos if (ent->plt.offset
5867 1.1 christos == (bfd_vma) htab->plt_initial_entry_size)
5868 1.1 christos {
5869 1.1 christos htab->srelplt2->size
5870 1.1 christos += (sizeof (Elf32_External_Rela)
5871 1.1 christos * VXWORKS_PLTRESOLVE_RELOCS);
5872 1.1 christos }
5873 1.1 christos
5874 1.1 christos htab->srelplt2->size
5875 1.1 christos += (sizeof (Elf32_External_Rela)
5876 1.1 christos * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
5877 1.1 christos }
5878 1.1 christos
5879 1.1 christos /* Every PLT entry has an associated GOT entry in
5880 1.1 christos .got.plt. */
5881 1.1 christos htab->sgotplt->size += 4;
5882 1.1 christos }
5883 1.1 christos }
5884 1.1 christos doneone = TRUE;
5885 1.1 christos }
5886 1.1 christos }
5887 1.1 christos else
5888 1.1 christos ent->plt.offset = (bfd_vma) -1;
5889 1.1 christos }
5890 1.1 christos else
5891 1.1 christos ent->plt.offset = (bfd_vma) -1;
5892 1.1 christos
5893 1.1 christos if (!doneone)
5894 1.1 christos {
5895 1.1 christos h->plt.plist = NULL;
5896 1.1 christos h->needs_plt = 0;
5897 1.1 christos }
5898 1.1 christos }
5899 1.1 christos else
5900 1.1 christos {
5901 1.1 christos h->plt.plist = NULL;
5902 1.1 christos h->needs_plt = 0;
5903 1.1 christos }
5904 1.1 christos
5905 1.1 christos eh = (struct ppc_elf_link_hash_entry *) h;
5906 1.1 christos if (eh->elf.got.refcount > 0)
5907 1.1 christos {
5908 1.1 christos bfd_boolean dyn;
5909 1.1 christos unsigned int need;
5910 1.1 christos
5911 1.1 christos /* Make sure this symbol is output as a dynamic symbol. */
5912 1.1 christos if (eh->elf.dynindx == -1
5913 1.1 christos && !eh->elf.forced_local
5914 1.1 christos && eh->elf.type != STT_GNU_IFUNC
5915 1.1 christos && htab->elf.dynamic_sections_created)
5916 1.1 christos {
5917 1.1 christos if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
5918 1.1 christos return FALSE;
5919 1.1 christos }
5920 1.1 christos
5921 1.1 christos need = 0;
5922 1.1 christos if ((eh->tls_mask & TLS_TLS) != 0)
5923 1.1 christos {
5924 1.1 christos if ((eh->tls_mask & TLS_LD) != 0)
5925 1.1 christos {
5926 1.1 christos if (!eh->elf.def_dynamic)
5927 1.1 christos /* We'll just use htab->tlsld_got.offset. This should
5928 1.1 christos always be the case. It's a little odd if we have
5929 1.1 christos a local dynamic reloc against a non-local symbol. */
5930 1.1 christos htab->tlsld_got.refcount += 1;
5931 1.1 christos else
5932 1.1 christos need += 8;
5933 1.1 christos }
5934 1.1 christos if ((eh->tls_mask & TLS_GD) != 0)
5935 1.1 christos need += 8;
5936 1.1 christos if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5937 1.1 christos need += 4;
5938 1.1 christos if ((eh->tls_mask & TLS_DTPREL) != 0)
5939 1.1 christos need += 4;
5940 1.1 christos }
5941 1.1 christos else
5942 1.1 christos need += 4;
5943 1.1 christos if (need == 0)
5944 1.1 christos eh->elf.got.offset = (bfd_vma) -1;
5945 1.1 christos else
5946 1.1 christos {
5947 1.1 christos eh->elf.got.offset = allocate_got (htab, need);
5948 1.1 christos dyn = htab->elf.dynamic_sections_created;
5949 1.1 christos if ((info->shared
5950 1.1 christos || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5951 1.1 christos && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5952 1.1 christos || eh->elf.root.type != bfd_link_hash_undefweak))
5953 1.1 christos {
5954 1.1 christos asection *rsec = htab->relgot;
5955 1.1 christos
5956 1.1 christos if (eh->elf.type == STT_GNU_IFUNC)
5957 1.1 christos rsec = htab->reliplt;
5958 1.1 christos /* All the entries we allocated need relocs.
5959 1.1 christos Except LD only needs one. */
5960 1.1 christos if ((eh->tls_mask & TLS_LD) != 0
5961 1.1 christos && eh->elf.def_dynamic)
5962 1.1 christos need -= 4;
5963 1.1 christos rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
5964 1.1 christos }
5965 1.1 christos }
5966 1.1 christos }
5967 1.1 christos else
5968 1.1 christos eh->elf.got.offset = (bfd_vma) -1;
5969 1.1 christos
5970 1.1 christos if (eh->dyn_relocs == NULL
5971 1.1 christos || !htab->elf.dynamic_sections_created)
5972 1.1 christos return TRUE;
5973 1.1 christos
5974 1.1 christos /* In the shared -Bsymbolic case, discard space allocated for
5975 1.1 christos dynamic pc-relative relocs against symbols which turn out to be
5976 1.1 christos defined in regular objects. For the normal shared case, discard
5977 1.1 christos space for relocs that have become local due to symbol visibility
5978 1.1 christos changes. */
5979 1.1 christos
5980 1.1 christos if (info->shared)
5981 1.1 christos {
5982 1.1 christos /* Relocs that use pc_count are those that appear on a call insn,
5983 1.1 christos or certain REL relocs (see must_be_dyn_reloc) that can be
5984 1.1 christos generated via assembly. We want calls to protected symbols to
5985 1.1 christos resolve directly to the function rather than going via the plt.
5986 1.1 christos If people want function pointer comparisons to work as expected
5987 1.1 christos then they should avoid writing weird assembly. */
5988 1.1 christos if (SYMBOL_CALLS_LOCAL (info, h))
5989 1.1 christos {
5990 1.1 christos struct elf_dyn_relocs **pp;
5991 1.1 christos
5992 1.1 christos for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5993 1.1 christos {
5994 1.1 christos p->count -= p->pc_count;
5995 1.1 christos p->pc_count = 0;
5996 1.1 christos if (p->count == 0)
5997 1.1 christos *pp = p->next;
5998 1.1 christos else
5999 1.1 christos pp = &p->next;
6000 1.1 christos }
6001 1.1 christos }
6002 1.1 christos
6003 1.1 christos if (htab->is_vxworks)
6004 1.1 christos {
6005 1.1 christos struct elf_dyn_relocs **pp;
6006 1.1 christos
6007 1.1 christos for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6008 1.1 christos {
6009 1.1 christos if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
6010 1.1 christos *pp = p->next;
6011 1.1 christos else
6012 1.1 christos pp = &p->next;
6013 1.1 christos }
6014 1.1 christos }
6015 1.1 christos
6016 1.1 christos /* Discard relocs on undefined symbols that must be local. */
6017 1.1 christos if (eh->dyn_relocs != NULL
6018 1.1 christos && h->root.type == bfd_link_hash_undefined
6019 1.1 christos && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6020 1.1 christos || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6021 1.1 christos eh->dyn_relocs = NULL;
6022 1.1 christos
6023 1.1 christos /* Also discard relocs on undefined weak syms with non-default
6024 1.1 christos visibility. */
6025 1.1 christos if (eh->dyn_relocs != NULL
6026 1.1 christos && h->root.type == bfd_link_hash_undefweak)
6027 1.1 christos {
6028 1.1 christos if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6029 1.1 christos eh->dyn_relocs = NULL;
6030 1.1 christos
6031 1.1 christos /* Make sure undefined weak symbols are output as a dynamic
6032 1.1 christos symbol in PIEs. */
6033 1.1 christos else if (h->dynindx == -1
6034 1.1 christos && !h->forced_local
6035 1.1 christos && !h->def_regular)
6036 1.1 christos {
6037 1.1 christos if (! bfd_elf_link_record_dynamic_symbol (info, h))
6038 1.1 christos return FALSE;
6039 1.1 christos }
6040 1.1 christos }
6041 1.1 christos }
6042 1.1 christos else if (ELIMINATE_COPY_RELOCS)
6043 1.1 christos {
6044 1.1 christos /* For the non-shared case, discard space for relocs against
6045 1.1 christos symbols which turn out to need copy relocs or are not
6046 1.1 christos dynamic. */
6047 1.1 christos
6048 1.1 christos if (!h->non_got_ref
6049 1.1 christos && !h->def_regular)
6050 1.1 christos {
6051 1.1 christos /* Make sure this symbol is output as a dynamic symbol.
6052 1.1 christos Undefined weak syms won't yet be marked as dynamic. */
6053 1.1 christos if (h->dynindx == -1
6054 1.1 christos && !h->forced_local)
6055 1.1 christos {
6056 1.1 christos if (! bfd_elf_link_record_dynamic_symbol (info, h))
6057 1.1 christos return FALSE;
6058 1.1 christos }
6059 1.1 christos
6060 1.1 christos /* If that succeeded, we know we'll be keeping all the
6061 1.1 christos relocs. */
6062 1.1 christos if (h->dynindx != -1)
6063 1.1 christos goto keep;
6064 1.1 christos }
6065 1.1 christos
6066 1.1 christos eh->dyn_relocs = NULL;
6067 1.1 christos
6068 1.1 christos keep: ;
6069 1.1 christos }
6070 1.1 christos
6071 1.1 christos /* Finally, allocate space. */
6072 1.1 christos for (p = eh->dyn_relocs; p != NULL; p = p->next)
6073 1.1 christos {
6074 1.1 christos asection *sreloc = elf_section_data (p->sec)->sreloc;
6075 1.1 christos if (eh->elf.type == STT_GNU_IFUNC)
6076 1.1 christos sreloc = htab->reliplt;
6077 1.1 christos sreloc->size += p->count * sizeof (Elf32_External_Rela);
6078 1.1 christos }
6079 1.1 christos
6080 1.1 christos return TRUE;
6081 1.1 christos }
6082 1.1 christos
6083 1.1 christos /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6084 1.1 christos read-only sections. */
6085 1.1 christos
6086 1.1 christos static bfd_boolean
6087 1.1 christos maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
6088 1.1 christos {
6089 1.1 christos if (h->root.type == bfd_link_hash_indirect)
6090 1.1 christos return TRUE;
6091 1.1 christos
6092 1.1 christos if (readonly_dynrelocs (h))
6093 1.1 christos {
6094 1.1 christos ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
6095 1.1 christos
6096 1.1 christos /* Not an error, just cut short the traversal. */
6097 1.1 christos return FALSE;
6098 1.1 christos }
6099 1.1 christos return TRUE;
6100 1.1 christos }
6101 1.1 christos
6102 1.1 christos static const unsigned char glink_eh_frame_cie[] =
6103 1.1 christos {
6104 1.1 christos 0, 0, 0, 16, /* length. */
6105 1.1 christos 0, 0, 0, 0, /* id. */
6106 1.1 christos 1, /* CIE version. */
6107 1.1 christos 'z', 'R', 0, /* Augmentation string. */
6108 1.1 christos 4, /* Code alignment. */
6109 1.1 christos 0x7c, /* Data alignment. */
6110 1.1 christos 65, /* RA reg. */
6111 1.1 christos 1, /* Augmentation size. */
6112 1.1 christos DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6113 1.1 christos DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6114 1.1 christos };
6115 1.1 christos
6116 1.1 christos /* Set the sizes of the dynamic sections. */
6117 1.1 christos
6118 1.1 christos static bfd_boolean
6119 1.1 christos ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
6120 1.1 christos struct bfd_link_info *info)
6121 1.1 christos {
6122 1.1 christos struct ppc_elf_link_hash_table *htab;
6123 1.1 christos asection *s;
6124 1.1 christos bfd_boolean relocs;
6125 1.1 christos bfd *ibfd;
6126 1.1 christos
6127 1.1 christos #ifdef DEBUG
6128 1.1 christos fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6129 1.1 christos #endif
6130 1.1 christos
6131 1.1 christos htab = ppc_elf_hash_table (info);
6132 1.1 christos BFD_ASSERT (htab->elf.dynobj != NULL);
6133 1.1 christos
6134 1.1 christos if (elf_hash_table (info)->dynamic_sections_created)
6135 1.1 christos {
6136 1.1 christos /* Set the contents of the .interp section to the interpreter. */
6137 1.1 christos if (info->executable)
6138 1.1 christos {
6139 1.1 christos s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6140 1.1 christos BFD_ASSERT (s != NULL);
6141 1.1 christos s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6142 1.1 christos s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6143 1.1 christos }
6144 1.1 christos }
6145 1.1 christos
6146 1.1 christos if (htab->plt_type == PLT_OLD)
6147 1.1 christos htab->got_header_size = 16;
6148 1.1 christos else if (htab->plt_type == PLT_NEW)
6149 1.1 christos htab->got_header_size = 12;
6150 1.1 christos
6151 1.1 christos /* Set up .got offsets for local syms, and space for local dynamic
6152 1.1 christos relocs. */
6153 1.1 christos for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6154 1.1 christos {
6155 1.1 christos bfd_signed_vma *local_got;
6156 1.1 christos bfd_signed_vma *end_local_got;
6157 1.1 christos struct plt_entry **local_plt;
6158 1.1 christos struct plt_entry **end_local_plt;
6159 1.1 christos char *lgot_masks;
6160 1.1 christos bfd_size_type locsymcount;
6161 1.1 christos Elf_Internal_Shdr *symtab_hdr;
6162 1.1 christos
6163 1.1 christos if (!is_ppc_elf (ibfd))
6164 1.1 christos continue;
6165 1.1 christos
6166 1.1 christos for (s = ibfd->sections; s != NULL; s = s->next)
6167 1.1 christos {
6168 1.1 christos struct ppc_dyn_relocs *p;
6169 1.1 christos
6170 1.1 christos for (p = ((struct ppc_dyn_relocs *)
6171 1.1 christos elf_section_data (s)->local_dynrel);
6172 1.1 christos p != NULL;
6173 1.1 christos p = p->next)
6174 1.1 christos {
6175 1.1 christos if (!bfd_is_abs_section (p->sec)
6176 1.1 christos && bfd_is_abs_section (p->sec->output_section))
6177 1.1 christos {
6178 1.1 christos /* Input section has been discarded, either because
6179 1.1 christos it is a copy of a linkonce section or due to
6180 1.1 christos linker script /DISCARD/, so we'll be discarding
6181 1.1 christos the relocs too. */
6182 1.1 christos }
6183 1.1 christos else if (htab->is_vxworks
6184 1.1 christos && strcmp (p->sec->output_section->name,
6185 1.1 christos ".tls_vars") == 0)
6186 1.1 christos {
6187 1.1 christos /* Relocations in vxworks .tls_vars sections are
6188 1.1 christos handled specially by the loader. */
6189 1.1 christos }
6190 1.1 christos else if (p->count != 0)
6191 1.1 christos {
6192 1.1 christos asection *sreloc = elf_section_data (p->sec)->sreloc;
6193 1.1 christos if (p->ifunc)
6194 1.1 christos sreloc = htab->reliplt;
6195 1.1 christos sreloc->size += p->count * sizeof (Elf32_External_Rela);
6196 1.1 christos if ((p->sec->output_section->flags
6197 1.1 christos & (SEC_READONLY | SEC_ALLOC))
6198 1.1 christos == (SEC_READONLY | SEC_ALLOC))
6199 1.1 christos info->flags |= DF_TEXTREL;
6200 1.1 christos }
6201 1.1 christos }
6202 1.1 christos }
6203 1.1 christos
6204 1.1 christos local_got = elf_local_got_refcounts (ibfd);
6205 1.1 christos if (!local_got)
6206 1.1 christos continue;
6207 1.1 christos
6208 1.1 christos symtab_hdr = &elf_symtab_hdr (ibfd);
6209 1.1 christos locsymcount = symtab_hdr->sh_info;
6210 1.1 christos end_local_got = local_got + locsymcount;
6211 1.1 christos local_plt = (struct plt_entry **) end_local_got;
6212 1.1 christos end_local_plt = local_plt + locsymcount;
6213 1.1 christos lgot_masks = (char *) end_local_plt;
6214 1.1 christos
6215 1.1 christos for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6216 1.1 christos if (*local_got > 0)
6217 1.1 christos {
6218 1.1 christos unsigned int need = 0;
6219 1.1 christos if ((*lgot_masks & TLS_TLS) != 0)
6220 1.1 christos {
6221 1.1 christos if ((*lgot_masks & TLS_GD) != 0)
6222 1.1 christos need += 8;
6223 1.1 christos if ((*lgot_masks & TLS_LD) != 0)
6224 1.1 christos htab->tlsld_got.refcount += 1;
6225 1.1 christos if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6226 1.1 christos need += 4;
6227 1.1 christos if ((*lgot_masks & TLS_DTPREL) != 0)
6228 1.1 christos need += 4;
6229 1.1 christos }
6230 1.1 christos else
6231 1.1 christos need += 4;
6232 1.1 christos if (need == 0)
6233 1.1 christos *local_got = (bfd_vma) -1;
6234 1.1 christos else
6235 1.1 christos {
6236 1.1 christos *local_got = allocate_got (htab, need);
6237 1.1 christos if (info->shared)
6238 1.1 christos {
6239 1.1 christos asection *srel = htab->relgot;
6240 1.1 christos if ((*lgot_masks & PLT_IFUNC) != 0)
6241 1.1 christos srel = htab->reliplt;
6242 1.1 christos srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6243 1.1 christos }
6244 1.1 christos }
6245 1.1 christos }
6246 1.1 christos else
6247 1.1 christos *local_got = (bfd_vma) -1;
6248 1.1 christos
6249 1.1 christos if (htab->is_vxworks)
6250 1.1 christos continue;
6251 1.1 christos
6252 1.1 christos /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6253 1.1 christos for (; local_plt < end_local_plt; ++local_plt)
6254 1.1 christos {
6255 1.1 christos struct plt_entry *ent;
6256 1.1 christos bfd_boolean doneone = FALSE;
6257 1.1 christos bfd_vma plt_offset = 0, glink_offset = 0;
6258 1.1 christos
6259 1.1 christos for (ent = *local_plt; ent != NULL; ent = ent->next)
6260 1.1 christos if (ent->plt.refcount > 0)
6261 1.1 christos {
6262 1.1 christos s = htab->iplt;
6263 1.1 christos
6264 1.1 christos if (!doneone)
6265 1.1 christos {
6266 1.1 christos plt_offset = s->size;
6267 1.1 christos s->size += 4;
6268 1.1 christos }
6269 1.1 christos ent->plt.offset = plt_offset;
6270 1.1 christos
6271 1.1 christos s = htab->glink;
6272 1.1 christos if (!doneone || info->shared)
6273 1.1 christos {
6274 1.1 christos glink_offset = s->size;
6275 1.1 christos s->size += GLINK_ENTRY_SIZE;
6276 1.1 christos }
6277 1.1 christos ent->glink_offset = glink_offset;
6278 1.1 christos
6279 1.1 christos if (!doneone)
6280 1.1 christos {
6281 1.1 christos htab->reliplt->size += sizeof (Elf32_External_Rela);
6282 1.1 christos doneone = TRUE;
6283 1.1 christos }
6284 1.1 christos }
6285 1.1 christos else
6286 1.1 christos ent->plt.offset = (bfd_vma) -1;
6287 1.1 christos }
6288 1.1 christos }
6289 1.1 christos
6290 1.1 christos /* Allocate space for global sym dynamic relocs. */
6291 1.1 christos elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6292 1.1 christos
6293 1.1 christos if (htab->tlsld_got.refcount > 0)
6294 1.1 christos {
6295 1.1 christos htab->tlsld_got.offset = allocate_got (htab, 8);
6296 1.1 christos if (info->shared)
6297 1.1 christos htab->relgot->size += sizeof (Elf32_External_Rela);
6298 1.1 christos }
6299 1.1 christos else
6300 1.1 christos htab->tlsld_got.offset = (bfd_vma) -1;
6301 1.1 christos
6302 1.1 christos if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
6303 1.1 christos {
6304 1.1 christos unsigned int g_o_t = 32768;
6305 1.1 christos
6306 1.1 christos /* If we haven't allocated the header, do so now. When we get here,
6307 1.1 christos for old plt/got the got size will be 0 to 32764 (not allocated),
6308 1.1 christos or 32780 to 65536 (header allocated). For new plt/got, the
6309 1.1 christos corresponding ranges are 0 to 32768 and 32780 to 65536. */
6310 1.1 christos if (htab->got->size <= 32768)
6311 1.1 christos {
6312 1.1 christos g_o_t = htab->got->size;
6313 1.1 christos if (htab->plt_type == PLT_OLD)
6314 1.1 christos g_o_t += 4;
6315 1.1 christos htab->got->size += htab->got_header_size;
6316 1.1 christos }
6317 1.1 christos
6318 1.1 christos htab->elf.hgot->root.u.def.value = g_o_t;
6319 1.1 christos }
6320 1.1 christos if (info->shared)
6321 1.1 christos {
6322 1.1 christos struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6323 1.1 christos if (sda != NULL
6324 1.1 christos && !(sda->root.type == bfd_link_hash_defined
6325 1.1 christos || sda->root.type == bfd_link_hash_defweak))
6326 1.1 christos {
6327 1.1 christos sda->root.type = bfd_link_hash_defined;
6328 1.1 christos sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6329 1.1 christos sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6330 1.1 christos }
6331 1.1 christos }
6332 1.1 christos
6333 1.1 christos if (htab->glink != NULL
6334 1.1 christos && htab->glink->size != 0
6335 1.1 christos && htab->elf.dynamic_sections_created)
6336 1.1 christos {
6337 1.1 christos htab->glink_pltresolve = htab->glink->size;
6338 1.1 christos /* Space for the branch table. */
6339 1.1 christos htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6340 1.1 christos /* Pad out to align the start of PLTresolve. */
6341 1.1 christos htab->glink->size += -htab->glink->size & 15;
6342 1.1 christos htab->glink->size += GLINK_PLTRESOLVE;
6343 1.1 christos
6344 1.1 christos if (htab->emit_stub_syms)
6345 1.1 christos {
6346 1.1 christos struct elf_link_hash_entry *sh;
6347 1.1 christos sh = elf_link_hash_lookup (&htab->elf, "__glink",
6348 1.1 christos TRUE, FALSE, FALSE);
6349 1.1 christos if (sh == NULL)
6350 1.1 christos return FALSE;
6351 1.1 christos if (sh->root.type == bfd_link_hash_new)
6352 1.1 christos {
6353 1.1 christos sh->root.type = bfd_link_hash_defined;
6354 1.1 christos sh->root.u.def.section = htab->glink;
6355 1.1 christos sh->root.u.def.value = htab->glink_pltresolve;
6356 1.1 christos sh->ref_regular = 1;
6357 1.1 christos sh->def_regular = 1;
6358 1.1 christos sh->ref_regular_nonweak = 1;
6359 1.1 christos sh->forced_local = 1;
6360 1.1 christos sh->non_elf = 0;
6361 1.1 christos }
6362 1.1 christos sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6363 1.1 christos TRUE, FALSE, FALSE);
6364 1.1 christos if (sh == NULL)
6365 1.1 christos return FALSE;
6366 1.1 christos if (sh->root.type == bfd_link_hash_new)
6367 1.1 christos {
6368 1.1 christos sh->root.type = bfd_link_hash_defined;
6369 1.1 christos sh->root.u.def.section = htab->glink;
6370 1.1 christos sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6371 1.1 christos sh->ref_regular = 1;
6372 1.1 christos sh->def_regular = 1;
6373 1.1 christos sh->ref_regular_nonweak = 1;
6374 1.1 christos sh->forced_local = 1;
6375 1.1 christos sh->non_elf = 0;
6376 1.1 christos }
6377 1.1 christos }
6378 1.1 christos }
6379 1.1 christos
6380 1.1 christos if (htab->glink != NULL
6381 1.1 christos && htab->glink->size != 0
6382 1.1 christos && htab->glink_eh_frame != NULL
6383 1.1 christos && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6384 1.1 christos && _bfd_elf_eh_frame_present (info))
6385 1.1 christos {
6386 1.1 christos s = htab->glink_eh_frame;
6387 1.1 christos s->size = sizeof (glink_eh_frame_cie) + 20;
6388 1.1 christos if (info->shared)
6389 1.1 christos {
6390 1.1 christos s->size += 4;
6391 1.1 christos if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6392 1.1 christos s->size += 4;
6393 1.1 christos }
6394 1.1 christos }
6395 1.1 christos
6396 1.1 christos /* We've now determined the sizes of the various dynamic sections.
6397 1.1 christos Allocate memory for them. */
6398 1.1 christos relocs = FALSE;
6399 1.1 christos for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6400 1.1 christos {
6401 1.1 christos bfd_boolean strip_section = TRUE;
6402 1.1 christos
6403 1.1 christos if ((s->flags & SEC_LINKER_CREATED) == 0)
6404 1.1 christos continue;
6405 1.1 christos
6406 1.1 christos if (s == htab->plt
6407 1.1 christos || s == htab->got)
6408 1.1 christos {
6409 1.1 christos /* We'd like to strip these sections if they aren't needed, but if
6410 1.1 christos we've exported dynamic symbols from them we must leave them.
6411 1.1 christos It's too late to tell BFD to get rid of the symbols. */
6412 1.1 christos if (htab->elf.hplt != NULL)
6413 1.1 christos strip_section = FALSE;
6414 1.1 christos /* Strip this section if we don't need it; see the
6415 1.1 christos comment below. */
6416 1.1 christos }
6417 1.1 christos else if (s == htab->iplt
6418 1.1 christos || s == htab->glink
6419 1.1 christos || s == htab->glink_eh_frame
6420 1.1 christos || s == htab->sgotplt
6421 1.1 christos || s == htab->sbss
6422 1.1 christos || s == htab->dynbss
6423 1.1 christos || s == htab->dynsbss
6424 1.1 christos || s == htab->sdata[0].section
6425 1.1 christos || s == htab->sdata[1].section)
6426 1.1 christos {
6427 1.1 christos /* Strip these too. */
6428 1.1 christos }
6429 1.1 christos else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6430 1.1 christos ".rela"))
6431 1.1 christos {
6432 1.1 christos if (s->size != 0)
6433 1.1 christos {
6434 1.1 christos /* Remember whether there are any relocation sections. */
6435 1.1 christos relocs = TRUE;
6436 1.1 christos
6437 1.1 christos /* We use the reloc_count field as a counter if we need
6438 1.1 christos to copy relocs into the output file. */
6439 1.1 christos s->reloc_count = 0;
6440 1.1 christos }
6441 1.1 christos }
6442 1.1 christos else
6443 1.1 christos {
6444 1.1 christos /* It's not one of our sections, so don't allocate space. */
6445 1.1 christos continue;
6446 1.1 christos }
6447 1.1 christos
6448 1.1 christos if (s->size == 0 && strip_section)
6449 1.1 christos {
6450 1.1 christos /* If we don't need this section, strip it from the
6451 1.1 christos output file. This is mostly to handle .rela.bss and
6452 1.1 christos .rela.plt. We must create both sections in
6453 1.1 christos create_dynamic_sections, because they must be created
6454 1.1 christos before the linker maps input sections to output
6455 1.1 christos sections. The linker does that before
6456 1.1 christos adjust_dynamic_symbol is called, and it is that
6457 1.1 christos function which decides whether anything needs to go
6458 1.1 christos into these sections. */
6459 1.1 christos s->flags |= SEC_EXCLUDE;
6460 1.1 christos continue;
6461 1.1 christos }
6462 1.1 christos
6463 1.1 christos if ((s->flags & SEC_HAS_CONTENTS) == 0)
6464 1.1 christos continue;
6465 1.1 christos
6466 1.1 christos /* Allocate memory for the section contents. */
6467 1.1 christos s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6468 1.1 christos if (s->contents == NULL)
6469 1.1 christos return FALSE;
6470 1.1 christos }
6471 1.1 christos
6472 1.1 christos if (htab->elf.dynamic_sections_created)
6473 1.1 christos {
6474 1.1 christos /* Add some entries to the .dynamic section. We fill in the
6475 1.1 christos values later, in ppc_elf_finish_dynamic_sections, but we
6476 1.1 christos must add the entries now so that we get the correct size for
6477 1.1 christos the .dynamic section. The DT_DEBUG entry is filled in by the
6478 1.1 christos dynamic linker and used by the debugger. */
6479 1.1 christos #define add_dynamic_entry(TAG, VAL) \
6480 1.1 christos _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6481 1.1 christos
6482 1.1 christos if (info->executable)
6483 1.1 christos {
6484 1.1 christos if (!add_dynamic_entry (DT_DEBUG, 0))
6485 1.1 christos return FALSE;
6486 1.1 christos }
6487 1.1 christos
6488 1.1 christos if (htab->plt != NULL && htab->plt->size != 0)
6489 1.1 christos {
6490 1.1 christos if (!add_dynamic_entry (DT_PLTGOT, 0)
6491 1.1 christos || !add_dynamic_entry (DT_PLTRELSZ, 0)
6492 1.1 christos || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6493 1.1 christos || !add_dynamic_entry (DT_JMPREL, 0))
6494 1.1 christos return FALSE;
6495 1.1 christos }
6496 1.1 christos
6497 1.1 christos if (htab->glink != NULL && htab->glink->size != 0)
6498 1.1 christos {
6499 1.1 christos if (!add_dynamic_entry (DT_PPC_GOT, 0))
6500 1.1 christos return FALSE;
6501 1.1 christos if (!htab->no_tls_get_addr_opt
6502 1.1 christos && htab->tls_get_addr != NULL
6503 1.1 christos && htab->tls_get_addr->plt.plist != NULL
6504 1.1 christos && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6505 1.1 christos return FALSE;
6506 1.1 christos }
6507 1.1 christos
6508 1.1 christos if (relocs)
6509 1.1 christos {
6510 1.1 christos if (!add_dynamic_entry (DT_RELA, 0)
6511 1.1 christos || !add_dynamic_entry (DT_RELASZ, 0)
6512 1.1 christos || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6513 1.1 christos return FALSE;
6514 1.1 christos }
6515 1.1 christos
6516 1.1 christos /* If any dynamic relocs apply to a read-only section, then we
6517 1.1 christos need a DT_TEXTREL entry. */
6518 1.1 christos if ((info->flags & DF_TEXTREL) == 0)
6519 1.1 christos elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6520 1.1 christos info);
6521 1.1 christos
6522 1.1 christos if ((info->flags & DF_TEXTREL) != 0)
6523 1.1 christos {
6524 1.1 christos if (!add_dynamic_entry (DT_TEXTREL, 0))
6525 1.1 christos return FALSE;
6526 1.1 christos }
6527 1.1 christos if (htab->is_vxworks
6528 1.1 christos && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6529 1.1 christos return FALSE;
6530 1.1 christos }
6531 1.1 christos #undef add_dynamic_entry
6532 1.1 christos
6533 1.1 christos if (htab->glink_eh_frame != NULL
6534 1.1 christos && htab->glink_eh_frame->contents != NULL)
6535 1.1 christos {
6536 1.1 christos unsigned char *p = htab->glink_eh_frame->contents;
6537 1.1 christos bfd_vma val;
6538 1.1 christos
6539 1.1 christos memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6540 1.1 christos /* CIE length (rewrite in case little-endian). */
6541 1.1 christos bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6542 1.1 christos p += sizeof (glink_eh_frame_cie);
6543 1.1 christos /* FDE length. */
6544 1.1 christos val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6545 1.1 christos bfd_put_32 (htab->elf.dynobj, val, p);
6546 1.1 christos p += 4;
6547 1.1 christos /* CIE pointer. */
6548 1.1 christos val = p - htab->glink_eh_frame->contents;
6549 1.1 christos bfd_put_32 (htab->elf.dynobj, val, p);
6550 1.1 christos p += 4;
6551 1.1 christos /* Offset to .glink. Set later. */
6552 1.1 christos p += 4;
6553 1.1 christos /* .glink size. */
6554 1.1 christos bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6555 1.1 christos p += 4;
6556 1.1 christos /* Augmentation. */
6557 1.1 christos p += 1;
6558 1.1 christos
6559 1.1 christos if (info->shared
6560 1.1 christos && htab->elf.dynamic_sections_created)
6561 1.1 christos {
6562 1.1 christos bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6563 1.1 christos if (adv < 64)
6564 1.1 christos *p++ = DW_CFA_advance_loc + adv;
6565 1.1 christos else if (adv < 256)
6566 1.1 christos {
6567 1.1 christos *p++ = DW_CFA_advance_loc1;
6568 1.1 christos *p++ = adv;
6569 1.1 christos }
6570 1.1 christos else if (adv < 65536)
6571 1.1 christos {
6572 1.1 christos *p++ = DW_CFA_advance_loc2;
6573 1.1 christos bfd_put_16 (htab->elf.dynobj, adv, p);
6574 1.1 christos p += 2;
6575 1.1 christos }
6576 1.1 christos else
6577 1.1 christos {
6578 1.1 christos *p++ = DW_CFA_advance_loc4;
6579 1.1 christos bfd_put_32 (htab->elf.dynobj, adv, p);
6580 1.1 christos p += 4;
6581 1.1 christos }
6582 1.1 christos *p++ = DW_CFA_register;
6583 1.1 christos *p++ = 65;
6584 1.1 christos p++;
6585 1.1 christos *p++ = DW_CFA_advance_loc + 4;
6586 1.1 christos *p++ = DW_CFA_restore_extended;
6587 1.1 christos *p++ = 65;
6588 1.1 christos }
6589 1.1 christos BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6590 1.1 christos == htab->glink_eh_frame->size);
6591 1.1 christos }
6592 1.1 christos
6593 1.1 christos return TRUE;
6594 1.1 christos }
6595 1.1 christos
6596 1.1 christos /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6597 1.1 christos
6598 1.1 christos static bfd_boolean
6599 1.1 christos ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6600 1.1 christos {
6601 1.1 christos if (h->plt.plist != NULL
6602 1.1 christos && !h->def_regular
6603 1.1 christos && (!h->pointer_equality_needed
6604 1.1 christos || !h->ref_regular_nonweak))
6605 1.1 christos return FALSE;
6606 1.1 christos
6607 1.1 christos return _bfd_elf_hash_symbol (h);
6608 1.1 christos }
6609 1.1 christos
6610 1.1 christos #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6612 1.1 christos
6613 1.1 christos /* Relaxation trampolines. r12 is available for clobbering (r11, is
6614 1.1 christos used for some functions that are allowed to break the ABI). */
6615 1.1 christos static const int shared_stub_entry[] =
6616 1.1 christos {
6617 1.1 christos 0x7c0802a6, /* mflr 0 */
6618 1.1 christos 0x429f0005, /* bcl 20, 31, .Lxxx */
6619 1.1 christos 0x7d8802a6, /* mflr 12 */
6620 1.1 christos 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6621 1.1 christos 0x398c0008, /* addi 12, 12, (xxx-.Lxxx)@l */
6622 1.1 christos 0x7c0803a6, /* mtlr 0 */
6623 1.1 christos 0x7d8903a6, /* mtctr 12 */
6624 1.1 christos 0x4e800420, /* bctr */
6625 1.1 christos };
6626 1.1 christos
6627 1.1 christos static const int stub_entry[] =
6628 1.1 christos {
6629 1.1 christos 0x3d800000, /* lis 12,xxx@ha */
6630 1.1 christos 0x398c0000, /* addi 12,12,xxx@l */
6631 1.1 christos 0x7d8903a6, /* mtctr 12 */
6632 1.1 christos 0x4e800420, /* bctr */
6633 1.1 christos };
6634 1.1 christos
6635 1.1 christos static bfd_boolean
6636 1.1 christos ppc_elf_relax_section (bfd *abfd,
6637 1.1 christos asection *isec,
6638 1.1 christos struct bfd_link_info *link_info,
6639 1.1 christos bfd_boolean *again)
6640 1.1 christos {
6641 1.1 christos struct one_fixup
6642 1.1 christos {
6643 1.1 christos struct one_fixup *next;
6644 1.1 christos asection *tsec;
6645 1.1 christos /* Final link, can use the symbol offset. For a
6646 1.1 christos relocatable link we use the symbol's index. */
6647 1.1 christos bfd_vma toff;
6648 1.1 christos bfd_vma trampoff;
6649 1.1 christos };
6650 1.1 christos
6651 1.1 christos Elf_Internal_Shdr *symtab_hdr;
6652 1.1 christos bfd_byte *contents = NULL;
6653 1.1 christos Elf_Internal_Sym *isymbuf = NULL;
6654 1.1 christos Elf_Internal_Rela *internal_relocs = NULL;
6655 1.1 christos Elf_Internal_Rela *irel, *irelend;
6656 1.1 christos struct one_fixup *fixups = NULL;
6657 1.1 christos unsigned changes = 0;
6658 1.1 christos struct ppc_elf_link_hash_table *htab;
6659 1.1 christos bfd_size_type trampoff;
6660 1.1 christos asection *got2;
6661 1.1 christos bfd_boolean maybe_pasted;
6662 1.1 christos
6663 1.1 christos *again = FALSE;
6664 1.1 christos
6665 1.1 christos /* Nothing to do if there are no relocations, and no need to do
6666 1.1 christos anything with non-alloc or non-code sections. */
6667 1.1 christos if ((isec->flags & SEC_ALLOC) == 0
6668 1.1 christos || (isec->flags & SEC_CODE) == 0
6669 1.1 christos || (isec->flags & SEC_RELOC) == 0
6670 1.1 christos || isec->reloc_count == 0)
6671 1.1 christos return TRUE;
6672 1.1 christos
6673 1.1 christos /* We cannot represent the required PIC relocs in the output, so don't
6674 1.1 christos do anything. The linker doesn't support mixing -shared and -r
6675 1.1 christos anyway. */
6676 1.1 christos if (link_info->relocatable && link_info->shared)
6677 1.1 christos return TRUE;
6678 1.1 christos
6679 1.1 christos trampoff = (isec->size + 3) & (bfd_vma) -4;
6680 1.1 christos maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6681 1.1 christos || strcmp (isec->output_section->name, ".fini") == 0);
6682 1.1 christos /* Space for a branch around any trampolines. */
6683 1.1 christos if (maybe_pasted)
6684 1.1 christos trampoff += 4;
6685 1.1 christos
6686 1.1 christos symtab_hdr = &elf_symtab_hdr (abfd);
6687 1.1 christos
6688 1.1 christos /* Get a copy of the native relocations. */
6689 1.1 christos internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6690 1.1 christos link_info->keep_memory);
6691 1.1 christos if (internal_relocs == NULL)
6692 1.1 christos goto error_return;
6693 1.1 christos
6694 1.1 christos htab = ppc_elf_hash_table (link_info);
6695 1.1 christos got2 = bfd_get_section_by_name (abfd, ".got2");
6696 1.1 christos
6697 1.1 christos irelend = internal_relocs + isec->reloc_count;
6698 1.1 christos for (irel = internal_relocs; irel < irelend; irel++)
6699 1.1 christos {
6700 1.1 christos unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6701 1.1 christos bfd_vma toff, roff;
6702 1.1 christos asection *tsec;
6703 1.1 christos struct one_fixup *f;
6704 1.1 christos size_t insn_offset = 0;
6705 1.1 christos bfd_vma max_branch_offset, val;
6706 1.1 christos bfd_byte *hit_addr;
6707 1.1 christos unsigned long t0;
6708 1.1 christos struct elf_link_hash_entry *h;
6709 1.1 christos struct plt_entry **plist;
6710 1.1 christos unsigned char sym_type;
6711 1.1 christos
6712 1.1 christos switch (r_type)
6713 1.1 christos {
6714 1.1 christos case R_PPC_REL24:
6715 1.1 christos case R_PPC_LOCAL24PC:
6716 1.1 christos case R_PPC_PLTREL24:
6717 1.1 christos max_branch_offset = 1 << 25;
6718 1.1 christos break;
6719 1.1 christos
6720 1.1 christos case R_PPC_REL14:
6721 1.1 christos case R_PPC_REL14_BRTAKEN:
6722 1.1 christos case R_PPC_REL14_BRNTAKEN:
6723 1.1 christos max_branch_offset = 1 << 15;
6724 1.1 christos break;
6725 1.1 christos
6726 1.1 christos default:
6727 1.1 christos continue;
6728 1.1 christos }
6729 1.1 christos
6730 1.1 christos /* Get the value of the symbol referred to by the reloc. */
6731 1.1 christos h = NULL;
6732 1.1 christos if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6733 1.1 christos {
6734 1.1 christos /* A local symbol. */
6735 1.1 christos Elf_Internal_Sym *isym;
6736 1.1 christos
6737 1.1 christos /* Read this BFD's local symbols. */
6738 1.1 christos if (isymbuf == NULL)
6739 1.1 christos {
6740 1.1 christos isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6741 1.1 christos if (isymbuf == NULL)
6742 1.1 christos isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6743 1.1 christos symtab_hdr->sh_info, 0,
6744 1.1 christos NULL, NULL, NULL);
6745 1.1 christos if (isymbuf == 0)
6746 1.1 christos goto error_return;
6747 1.1 christos }
6748 1.1 christos isym = isymbuf + ELF32_R_SYM (irel->r_info);
6749 1.1 christos if (isym->st_shndx == SHN_UNDEF)
6750 1.1 christos tsec = bfd_und_section_ptr;
6751 1.1 christos else if (isym->st_shndx == SHN_ABS)
6752 1.1 christos tsec = bfd_abs_section_ptr;
6753 1.1 christos else if (isym->st_shndx == SHN_COMMON)
6754 1.1 christos tsec = bfd_com_section_ptr;
6755 1.1 christos else
6756 1.1 christos tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6757 1.1 christos
6758 1.1 christos toff = isym->st_value;
6759 1.1 christos sym_type = ELF_ST_TYPE (isym->st_info);
6760 1.1 christos }
6761 1.1 christos else
6762 1.1 christos {
6763 1.1 christos /* Global symbol handling. */
6764 1.1 christos unsigned long indx;
6765 1.1 christos
6766 1.1 christos indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6767 1.1 christos h = elf_sym_hashes (abfd)[indx];
6768 1.1 christos
6769 1.1 christos while (h->root.type == bfd_link_hash_indirect
6770 1.1 christos || h->root.type == bfd_link_hash_warning)
6771 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
6772 1.1 christos
6773 1.1 christos if (h->root.type == bfd_link_hash_defined
6774 1.1 christos || h->root.type == bfd_link_hash_defweak)
6775 1.1 christos {
6776 1.1 christos tsec = h->root.u.def.section;
6777 1.1 christos toff = h->root.u.def.value;
6778 1.1 christos }
6779 1.1 christos else if (h->root.type == bfd_link_hash_undefined
6780 1.1 christos || h->root.type == bfd_link_hash_undefweak)
6781 1.1 christos {
6782 1.1 christos tsec = bfd_und_section_ptr;
6783 1.1 christos toff = link_info->relocatable ? indx : 0;
6784 1.1 christos }
6785 1.1 christos else
6786 1.1 christos continue;
6787 1.1 christos
6788 1.1 christos sym_type = h->type;
6789 1.1 christos }
6790 1.1 christos
6791 1.1 christos /* The condition here under which we call find_plt_ent must
6792 1.1 christos match that in relocate_section. If we call find_plt_ent here
6793 1.1 christos but not in relocate_section, or vice versa, then the branch
6794 1.1 christos destination used here may be incorrect. */
6795 1.1 christos plist = NULL;
6796 1.1 christos if (h != NULL)
6797 1.1 christos {
6798 1.1 christos /* We know is_branch_reloc (r_type) is true. */
6799 1.1 christos if (h->type == STT_GNU_IFUNC
6800 1.1 christos || r_type == R_PPC_PLTREL24)
6801 1.1 christos plist = &h->plt.plist;
6802 1.1 christos }
6803 1.1 christos else if (sym_type == STT_GNU_IFUNC
6804 1.1 christos && elf_local_got_offsets (abfd) != NULL)
6805 1.1 christos {
6806 1.1 christos bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6807 1.1 christos struct plt_entry **local_plt = (struct plt_entry **)
6808 1.1 christos (local_got_offsets + symtab_hdr->sh_info);
6809 1.1 christos plist = local_plt + ELF32_R_SYM (irel->r_info);
6810 1.1 christos }
6811 1.1 christos if (plist != NULL)
6812 1.1 christos {
6813 1.1 christos bfd_vma addend = 0;
6814 1.1 christos struct plt_entry *ent;
6815 1.1 christos
6816 1.1 christos if (r_type == R_PPC_PLTREL24 && link_info->shared)
6817 1.1 christos addend = irel->r_addend;
6818 1.1 christos ent = find_plt_ent (plist, got2, addend);
6819 1.1 christos if (ent != NULL)
6820 1.1 christos {
6821 1.1 christos if (htab->plt_type == PLT_NEW
6822 1.1 christos || h == NULL
6823 1.1 christos || !htab->elf.dynamic_sections_created
6824 1.1 christos || h->dynindx == -1)
6825 1.1 christos {
6826 1.1 christos tsec = htab->glink;
6827 1.1 christos toff = ent->glink_offset;
6828 1.1 christos }
6829 1.1 christos else
6830 1.1 christos {
6831 1.1 christos tsec = htab->plt;
6832 1.1 christos toff = ent->plt.offset;
6833 1.1 christos }
6834 1.1 christos }
6835 1.1 christos }
6836 1.1 christos
6837 1.1 christos /* If the branch and target are in the same section, you have
6838 1.1 christos no hope of adding stubs. We'll error out later should the
6839 1.1 christos branch overflow. */
6840 1.1 christos if (tsec == isec)
6841 1.1 christos continue;
6842 1.1 christos
6843 1.1 christos /* There probably isn't any reason to handle symbols in
6844 1.1 christos SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6845 1.1 christos attribute for a code section, and we are only looking at
6846 1.1 christos branches. However, implement it correctly here as a
6847 1.1 christos reference for other target relax_section functions. */
6848 1.1 christos if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
6849 1.1 christos {
6850 1.1 christos /* At this stage in linking, no SEC_MERGE symbol has been
6851 1.1 christos adjusted, so all references to such symbols need to be
6852 1.1 christos passed through _bfd_merged_section_offset. (Later, in
6853 1.1 christos relocate_section, all SEC_MERGE symbols *except* for
6854 1.1 christos section symbols have been adjusted.)
6855 1.1 christos
6856 1.1 christos gas may reduce relocations against symbols in SEC_MERGE
6857 1.1 christos sections to a relocation against the section symbol when
6858 1.1 christos the original addend was zero. When the reloc is against
6859 1.1 christos a section symbol we should include the addend in the
6860 1.1 christos offset passed to _bfd_merged_section_offset, since the
6861 1.1 christos location of interest is the original symbol. On the
6862 1.1 christos other hand, an access to "sym+addend" where "sym" is not
6863 1.1 christos a section symbol should not include the addend; Such an
6864 1.1 christos access is presumed to be an offset from "sym"; The
6865 1.1 christos location of interest is just "sym". */
6866 1.1 christos if (sym_type == STT_SECTION)
6867 1.1 christos toff += irel->r_addend;
6868 1.1 christos
6869 1.1 christos toff = _bfd_merged_section_offset (abfd, &tsec,
6870 1.1 christos elf_section_data (tsec)->sec_info,
6871 1.1 christos toff);
6872 1.1 christos
6873 1.1 christos if (sym_type != STT_SECTION)
6874 1.1 christos toff += irel->r_addend;
6875 1.1 christos }
6876 1.1 christos /* PLTREL24 addends are special. */
6877 1.1 christos else if (r_type != R_PPC_PLTREL24)
6878 1.1 christos toff += irel->r_addend;
6879 1.1 christos
6880 1.1 christos /* Attempted -shared link of non-pic code loses. */
6881 1.1 christos if (tsec->output_section == NULL)
6882 1.1 christos continue;
6883 1.1 christos
6884 1.1 christos roff = irel->r_offset;
6885 1.1 christos
6886 1.1 christos /* If the branch is in range, no need to do anything. */
6887 1.1 christos if (tsec != bfd_und_section_ptr
6888 1.1 christos && (!link_info->relocatable
6889 1.1 christos /* A relocatable link may have sections moved during
6890 1.1 christos final link, so do not presume they remain in range. */
6891 1.1 christos || tsec->output_section == isec->output_section))
6892 1.1 christos {
6893 1.1 christos bfd_vma symaddr, reladdr;
6894 1.1 christos
6895 1.1 christos symaddr = tsec->output_section->vma + tsec->output_offset + toff;
6896 1.1 christos reladdr = isec->output_section->vma + isec->output_offset + roff;
6897 1.1 christos if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
6898 1.1 christos continue;
6899 1.1 christos }
6900 1.1 christos
6901 1.1 christos /* Look for an existing fixup to this address. */
6902 1.1 christos for (f = fixups; f ; f = f->next)
6903 1.1 christos if (f->tsec == tsec && f->toff == toff)
6904 1.1 christos break;
6905 1.1 christos
6906 1.1 christos if (f == NULL)
6907 1.1 christos {
6908 1.1 christos size_t size;
6909 1.1 christos unsigned long stub_rtype;
6910 1.1 christos
6911 1.1 christos val = trampoff - roff;
6912 1.1 christos if (val >= max_branch_offset)
6913 1.1 christos /* Oh dear, we can't reach a trampoline. Don't try to add
6914 1.1 christos one. We'll report an error later. */
6915 1.1 christos continue;
6916 1.1 christos
6917 1.1 christos if (link_info->shared)
6918 1.1 christos {
6919 1.1 christos size = 4 * ARRAY_SIZE (shared_stub_entry);
6920 1.1 christos insn_offset = 12;
6921 1.1 christos }
6922 1.1 christos else
6923 1.1 christos {
6924 1.1 christos size = 4 * ARRAY_SIZE (stub_entry);
6925 1.1 christos insn_offset = 0;
6926 1.1 christos }
6927 1.1 christos stub_rtype = R_PPC_RELAX;
6928 1.1 christos if (tsec == htab->plt
6929 1.1 christos || tsec == htab->glink)
6930 1.1 christos {
6931 1.1 christos stub_rtype = R_PPC_RELAX_PLT;
6932 1.1 christos if (r_type == R_PPC_PLTREL24)
6933 1.1 christos stub_rtype = R_PPC_RELAX_PLTREL24;
6934 1.1 christos }
6935 1.1 christos
6936 1.1 christos /* Hijack the old relocation. Since we need two
6937 1.1 christos relocations for this use a "composite" reloc. */
6938 1.1 christos irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
6939 1.1 christos stub_rtype);
6940 1.1 christos irel->r_offset = trampoff + insn_offset;
6941 1.1 christos if (r_type == R_PPC_PLTREL24
6942 1.1 christos && stub_rtype != R_PPC_RELAX_PLTREL24)
6943 1.1 christos irel->r_addend = 0;
6944 1.1 christos
6945 1.1 christos /* Record the fixup so we don't do it again this section. */
6946 1.1 christos f = bfd_malloc (sizeof (*f));
6947 1.1 christos f->next = fixups;
6948 1.1 christos f->tsec = tsec;
6949 1.1 christos f->toff = toff;
6950 1.1 christos f->trampoff = trampoff;
6951 1.1 christos fixups = f;
6952 1.1 christos
6953 1.1 christos trampoff += size;
6954 1.1 christos changes++;
6955 1.1 christos }
6956 1.1 christos else
6957 1.1 christos {
6958 1.1 christos val = f->trampoff - roff;
6959 1.1 christos if (val >= max_branch_offset)
6960 1.1 christos continue;
6961 1.1 christos
6962 1.1 christos /* Nop out the reloc, since we're finalizing things here. */
6963 1.1 christos irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6964 1.1 christos }
6965 1.1 christos
6966 1.1 christos /* Get the section contents. */
6967 1.1 christos if (contents == NULL)
6968 1.1 christos {
6969 1.1 christos /* Get cached copy if it exists. */
6970 1.1 christos if (elf_section_data (isec)->this_hdr.contents != NULL)
6971 1.1 christos contents = elf_section_data (isec)->this_hdr.contents;
6972 1.1 christos else
6973 1.1 christos {
6974 1.1 christos /* Go get them off disk. */
6975 1.1 christos if (!bfd_malloc_and_get_section (abfd, isec, &contents))
6976 1.1 christos goto error_return;
6977 1.1 christos }
6978 1.1 christos }
6979 1.1 christos
6980 1.1 christos /* Fix up the existing branch to hit the trampoline. */
6981 1.1 christos hit_addr = contents + roff;
6982 1.1 christos switch (r_type)
6983 1.1 christos {
6984 1.1 christos case R_PPC_REL24:
6985 1.1 christos case R_PPC_LOCAL24PC:
6986 1.1 christos case R_PPC_PLTREL24:
6987 1.1 christos t0 = bfd_get_32 (abfd, hit_addr);
6988 1.1 christos t0 &= ~0x3fffffc;
6989 1.1 christos t0 |= val & 0x3fffffc;
6990 1.1 christos bfd_put_32 (abfd, t0, hit_addr);
6991 1.1 christos break;
6992 1.1 christos
6993 1.1 christos case R_PPC_REL14:
6994 1.1 christos case R_PPC_REL14_BRTAKEN:
6995 1.1 christos case R_PPC_REL14_BRNTAKEN:
6996 1.1 christos t0 = bfd_get_32 (abfd, hit_addr);
6997 1.1 christos t0 &= ~0xfffc;
6998 1.1 christos t0 |= val & 0xfffc;
6999 1.1 christos bfd_put_32 (abfd, t0, hit_addr);
7000 1.1 christos break;
7001 1.1 christos }
7002 1.1 christos }
7003 1.1 christos
7004 1.1 christos /* Write out the trampolines. */
7005 1.1 christos if (fixups != NULL)
7006 1.1 christos {
7007 1.1 christos const int *stub;
7008 1.1 christos bfd_byte *dest;
7009 1.1 christos int i, size;
7010 1.1 christos
7011 1.1 christos do
7012 1.1 christos {
7013 1.1 christos struct one_fixup *f = fixups;
7014 1.1 christos fixups = fixups->next;
7015 1.1 christos free (f);
7016 1.1 christos }
7017 1.1 christos while (fixups);
7018 1.1 christos
7019 1.1 christos contents = bfd_realloc_or_free (contents, trampoff);
7020 1.1 christos if (contents == NULL)
7021 1.1 christos goto error_return;
7022 1.1 christos
7023 1.1 christos isec->size = (isec->size + 3) & (bfd_vma) -4;
7024 1.1 christos dest = contents + isec->size;
7025 1.1 christos /* Branch around the trampolines. */
7026 1.1 christos if (maybe_pasted)
7027 1.1 christos {
7028 1.1 christos bfd_vma val = B + trampoff - isec->size;
7029 1.1 christos bfd_put_32 (abfd, val, dest);
7030 1.1 christos dest += 4;
7031 1.1 christos }
7032 1.1 christos isec->size = trampoff;
7033 1.1 christos
7034 1.1 christos if (link_info->shared)
7035 1.1 christos {
7036 1.1 christos stub = shared_stub_entry;
7037 1.1 christos size = ARRAY_SIZE (shared_stub_entry);
7038 1.1 christos }
7039 1.1 christos else
7040 1.1 christos {
7041 1.1 christos stub = stub_entry;
7042 1.1 christos size = ARRAY_SIZE (stub_entry);
7043 1.1 christos }
7044 1.1 christos
7045 1.1 christos i = 0;
7046 1.1 christos while (dest < contents + trampoff)
7047 1.1 christos {
7048 1.1 christos bfd_put_32 (abfd, stub[i], dest);
7049 1.1 christos i++;
7050 1.1 christos if (i == size)
7051 1.1 christos i = 0;
7052 1.1 christos dest += 4;
7053 1.1 christos }
7054 1.1 christos BFD_ASSERT (i == 0);
7055 1.1 christos }
7056 1.1 christos
7057 1.1 christos if (isymbuf != NULL
7058 1.1 christos && symtab_hdr->contents != (unsigned char *) isymbuf)
7059 1.1 christos {
7060 1.1 christos if (! link_info->keep_memory)
7061 1.1 christos free (isymbuf);
7062 1.1 christos else
7063 1.1 christos {
7064 1.1 christos /* Cache the symbols for elf_link_input_bfd. */
7065 1.1 christos symtab_hdr->contents = (unsigned char *) isymbuf;
7066 1.1 christos }
7067 1.1 christos }
7068 1.1 christos
7069 1.1 christos if (contents != NULL
7070 1.1 christos && elf_section_data (isec)->this_hdr.contents != contents)
7071 1.1 christos {
7072 1.1 christos if (!changes && !link_info->keep_memory)
7073 1.1 christos free (contents);
7074 1.1 christos else
7075 1.1 christos {
7076 1.1 christos /* Cache the section contents for elf_link_input_bfd. */
7077 1.1 christos elf_section_data (isec)->this_hdr.contents = contents;
7078 1.1 christos }
7079 1.1 christos }
7080 1.1 christos
7081 1.1 christos if (changes != 0)
7082 1.1 christos {
7083 1.1 christos /* Append sufficient NOP relocs so we can write out relocation
7084 1.1 christos information for the trampolines. */
7085 1.1 christos Elf_Internal_Shdr *rel_hdr;
7086 1.1 christos Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7087 1.1 christos * sizeof (*new_relocs));
7088 1.1 christos unsigned ix;
7089 1.1 christos
7090 1.1 christos if (!new_relocs)
7091 1.1 christos goto error_return;
7092 1.1 christos memcpy (new_relocs, internal_relocs,
7093 1.1 christos isec->reloc_count * sizeof (*new_relocs));
7094 1.1 christos for (ix = changes; ix--;)
7095 1.1 christos {
7096 1.1 christos irel = new_relocs + ix + isec->reloc_count;
7097 1.1 christos
7098 1.1 christos irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7099 1.1 christos }
7100 1.1 christos if (internal_relocs != elf_section_data (isec)->relocs)
7101 1.1 christos free (internal_relocs);
7102 1.1 christos elf_section_data (isec)->relocs = new_relocs;
7103 1.1 christos isec->reloc_count += changes;
7104 1.1 christos rel_hdr = _bfd_elf_single_rel_hdr (isec);
7105 1.1 christos rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7106 1.1 christos }
7107 1.1 christos else if (elf_section_data (isec)->relocs != internal_relocs)
7108 1.1 christos free (internal_relocs);
7109 1.1 christos
7110 1.1 christos *again = changes != 0;
7111 1.1 christos if (!*again && link_info->relocatable)
7112 1.1 christos {
7113 1.1 christos /* Convert the internal relax relocs to external form. */
7114 1.1 christos for (irel = internal_relocs; irel < irelend; irel++)
7115 1.1 christos if (ELF32_R_TYPE (irel->r_info) == R_PPC_RELAX)
7116 1.1 christos {
7117 1.1 christos unsigned long r_symndx = ELF32_R_SYM (irel->r_info);
7118 1.1 christos
7119 1.1 christos /* Rewrite the reloc and convert one of the trailing nop
7120 1.1 christos relocs to describe this relocation. */
7121 1.1 christos BFD_ASSERT (ELF32_R_TYPE (irelend[-1].r_info) == R_PPC_NONE);
7122 1.1 christos /* The relocs are at the bottom 2 bytes */
7123 1.1 christos irel[0].r_offset += 2;
7124 1.1 christos memmove (irel + 1, irel, (irelend - irel - 1) * sizeof (*irel));
7125 1.1 christos irel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
7126 1.1 christos irel[1].r_offset += 4;
7127 1.1 christos irel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
7128 1.1 christos irel++;
7129 1.1 christos }
7130 1.1 christos }
7131 1.1 christos
7132 1.1 christos return TRUE;
7133 1.1 christos
7134 1.1 christos error_return:
7135 1.1 christos if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7136 1.1 christos free (isymbuf);
7137 1.1 christos if (contents != NULL
7138 1.1 christos && elf_section_data (isec)->this_hdr.contents != contents)
7139 1.1 christos free (contents);
7140 1.1 christos if (internal_relocs != NULL
7141 1.1 christos && elf_section_data (isec)->relocs != internal_relocs)
7142 1.1 christos free (internal_relocs);
7143 1.1 christos return FALSE;
7144 1.1 christos }
7145 1.1 christos
7146 1.1 christos /* What to do when ld finds relocations against symbols defined in
7148 1.1 christos discarded sections. */
7149 1.1 christos
7150 1.1 christos static unsigned int
7151 1.1 christos ppc_elf_action_discarded (asection *sec)
7152 1.1 christos {
7153 1.1 christos if (strcmp (".fixup", sec->name) == 0)
7154 1.1 christos return 0;
7155 1.1 christos
7156 1.1 christos if (strcmp (".got2", sec->name) == 0)
7157 1.1 christos return 0;
7158 1.1 christos
7159 1.1 christos return _bfd_elf_default_action_discarded (sec);
7160 1.1 christos }
7161 1.1 christos
7162 1.1 christos /* Fill in the address for a pointer generated in a linker section. */
7164 1.1 christos
7165 1.1 christos static bfd_vma
7166 1.1 christos elf_finish_pointer_linker_section (bfd *input_bfd,
7167 1.1 christos elf_linker_section_t *lsect,
7168 1.1 christos struct elf_link_hash_entry *h,
7169 1.1 christos bfd_vma relocation,
7170 1.1 christos const Elf_Internal_Rela *rel)
7171 1.1 christos {
7172 1.1 christos elf_linker_section_pointers_t *linker_section_ptr;
7173 1.1 christos
7174 1.1 christos BFD_ASSERT (lsect != NULL);
7175 1.1 christos
7176 1.1 christos if (h != NULL)
7177 1.1 christos {
7178 1.1 christos /* Handle global symbol. */
7179 1.1 christos struct ppc_elf_link_hash_entry *eh;
7180 1.1 christos
7181 1.1 christos eh = (struct ppc_elf_link_hash_entry *) h;
7182 1.1 christos BFD_ASSERT (eh->elf.def_regular);
7183 1.1 christos linker_section_ptr = eh->linker_section_pointer;
7184 1.1 christos }
7185 1.1 christos else
7186 1.1 christos {
7187 1.1 christos /* Handle local symbol. */
7188 1.1 christos unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7189 1.1 christos
7190 1.1 christos BFD_ASSERT (is_ppc_elf (input_bfd));
7191 1.1 christos BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7192 1.1 christos linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7193 1.1 christos }
7194 1.1 christos
7195 1.1 christos linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7196 1.1 christos rel->r_addend,
7197 1.1 christos lsect);
7198 1.1 christos BFD_ASSERT (linker_section_ptr != NULL);
7199 1.1 christos
7200 1.1 christos /* Offset will always be a multiple of four, so use the bottom bit
7201 1.1 christos as a "written" flag. */
7202 1.1 christos if ((linker_section_ptr->offset & 1) == 0)
7203 1.1 christos {
7204 1.1 christos bfd_put_32 (lsect->section->owner,
7205 1.1 christos relocation + linker_section_ptr->addend,
7206 1.1 christos lsect->section->contents + linker_section_ptr->offset);
7207 1.1 christos linker_section_ptr->offset += 1;
7208 1.1 christos }
7209 1.1 christos
7210 1.1 christos relocation = (lsect->section->output_section->vma
7211 1.1 christos + lsect->section->output_offset
7212 1.1 christos + linker_section_ptr->offset - 1
7213 1.1 christos - SYM_VAL (lsect->sym));
7214 1.1 christos
7215 1.1 christos #ifdef DEBUG
7216 1.1 christos fprintf (stderr,
7217 1.1 christos "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7218 1.1 christos lsect->name, (long) relocation, (long) relocation);
7219 1.1 christos #endif
7220 1.1 christos
7221 1.1 christos return relocation;
7222 1.1 christos }
7223 1.1 christos
7224 1.1 christos #define PPC_LO(v) ((v) & 0xffff)
7225 1.1 christos #define PPC_HI(v) (((v) >> 16) & 0xffff)
7226 1.1 christos #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7227 1.1 christos
7228 1.1 christos static void
7229 1.1 christos write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7230 1.1 christos struct bfd_link_info *info)
7231 1.1 christos {
7232 1.1 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7233 1.1 christos bfd *output_bfd = info->output_bfd;
7234 1.1 christos bfd_vma plt;
7235 1.1 christos
7236 1.1 christos plt = ((ent->plt.offset & ~1)
7237 1.1 christos + plt_sec->output_section->vma
7238 1.1 christos + plt_sec->output_offset);
7239 1.1 christos
7240 1.1 christos if (info->shared)
7241 1.1 christos {
7242 1.1 christos bfd_vma got = 0;
7243 1.1 christos
7244 1.1 christos if (ent->addend >= 32768)
7245 1.1 christos got = (ent->addend
7246 1.1 christos + ent->sec->output_section->vma
7247 1.1 christos + ent->sec->output_offset);
7248 1.1 christos else if (htab->elf.hgot != NULL)
7249 1.1 christos got = SYM_VAL (htab->elf.hgot);
7250 1.1 christos
7251 1.1 christos plt -= got;
7252 1.1 christos
7253 1.1 christos if (plt + 0x8000 < 0x10000)
7254 1.1 christos {
7255 1.1 christos bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7256 1.1 christos p += 4;
7257 1.1 christos bfd_put_32 (output_bfd, MTCTR_11, p);
7258 1.1 christos p += 4;
7259 1.1 christos bfd_put_32 (output_bfd, BCTR, p);
7260 1.1 christos p += 4;
7261 1.1 christos bfd_put_32 (output_bfd, NOP, p);
7262 1.1 christos p += 4;
7263 1.1 christos }
7264 1.1 christos else
7265 1.1 christos {
7266 1.1 christos bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7267 1.1 christos p += 4;
7268 1.1 christos bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7269 1.1 christos p += 4;
7270 1.1 christos bfd_put_32 (output_bfd, MTCTR_11, p);
7271 1.1 christos p += 4;
7272 1.1 christos bfd_put_32 (output_bfd, BCTR, p);
7273 1.1 christos p += 4;
7274 1.1 christos }
7275 1.1 christos }
7276 1.1 christos else
7277 1.1 christos {
7278 1.1 christos bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7279 1.1 christos p += 4;
7280 1.1 christos bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7281 1.1 christos p += 4;
7282 1.1 christos bfd_put_32 (output_bfd, MTCTR_11, p);
7283 1.1 christos p += 4;
7284 1.1 christos bfd_put_32 (output_bfd, BCTR, p);
7285 1.1 christos p += 4;
7286 1.1 christos }
7287 1.1 christos }
7288 1.1 christos
7289 1.1 christos /* Return true if symbol is defined statically. */
7290 1.1 christos
7291 1.1 christos static bfd_boolean
7292 1.1 christos is_static_defined (struct elf_link_hash_entry *h)
7293 1.1 christos {
7294 1.1 christos return ((h->root.type == bfd_link_hash_defined
7295 1.1 christos || h->root.type == bfd_link_hash_defweak)
7296 1.1 christos && h->root.u.def.section != NULL
7297 1.1 christos && h->root.u.def.section->output_section != NULL);
7298 1.1 christos }
7299 1.1 christos
7300 1.1 christos /* If INSN is an opcode that may be used with an @tls operand, return
7301 1.1 christos the transformed insn for TLS optimisation, otherwise return 0. If
7302 1.1 christos REG is non-zero only match an insn with RB or RA equal to REG. */
7303 1.1 christos
7304 1.1 christos unsigned int
7305 1.1 christos _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7306 1.1 christos {
7307 1.1 christos unsigned int rtra;
7308 1.1 christos
7309 1.1 christos if ((insn & (0x3f << 26)) != 31 << 26)
7310 1.1 christos return 0;
7311 1.1 christos
7312 1.1 christos if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7313 1.1 christos rtra = insn & ((1 << 26) - (1 << 16));
7314 1.1 christos else if (((insn >> 16) & 0x1f) == reg)
7315 1.1 christos rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7316 1.1 christos else
7317 1.1 christos return 0;
7318 1.1 christos
7319 1.1 christos if ((insn & (0x3ff << 1)) == 266 << 1)
7320 1.1 christos /* add -> addi. */
7321 1.1 christos insn = 14 << 26;
7322 1.1 christos else if ((insn & (0x1f << 1)) == 23 << 1
7323 1.1 christos && ((insn & (0x1f << 6)) < 14 << 6
7324 1.1 christos || ((insn & (0x1f << 6)) >= 16 << 6
7325 1.1 christos && (insn & (0x1f << 6)) < 24 << 6)))
7326 1.1 christos /* load and store indexed -> dform. */
7327 1.1 christos insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7328 1.1 christos else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7329 1.1 christos /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7330 1.1 christos insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7331 1.1 christos else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7332 1.1 christos /* lwax -> lwa. */
7333 1.1 christos insn = (58 << 26) | 2;
7334 1.1 christos else
7335 1.1 christos return 0;
7336 1.1 christos insn |= rtra;
7337 1.1 christos return insn;
7338 1.1 christos }
7339 1.1 christos
7340 1.1 christos /* If INSN is an opcode that may be used with an @tprel operand, return
7341 1.1 christos the transformed insn for an undefined weak symbol, ie. with the
7342 1.1 christos thread pointer REG operand removed. Otherwise return 0. */
7343 1.1 christos
7344 1.1 christos unsigned int
7345 1.1 christos _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7346 1.1 christos {
7347 1.1 christos if ((insn & (0x1f << 16)) == reg << 16
7348 1.1 christos && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7349 1.1 christos || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7350 1.1 christos || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7351 1.1 christos || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7352 1.1 christos || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7353 1.1 christos || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7354 1.1 christos || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7355 1.1 christos || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7356 1.1 christos || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7357 1.1 christos || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7358 1.1 christos || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7359 1.1 christos || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7360 1.1 christos || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7361 1.1 christos || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7362 1.1 christos || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7363 1.1 christos || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7364 1.1 christos && (insn & 3) != 1)
7365 1.1 christos || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7366 1.1 christos && ((insn & 3) == 0 || (insn & 3) == 3))))
7367 1.1 christos {
7368 1.1 christos insn &= ~(0x1f << 16);
7369 1.1 christos }
7370 1.1 christos else if ((insn & (0x1f << 21)) == reg << 21
7371 1.1 christos && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7372 1.1 christos || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7373 1.1 christos || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7374 1.1 christos {
7375 1.1 christos insn &= ~(0x1f << 21);
7376 1.1 christos insn |= (insn & (0x1f << 16)) << 5;
7377 1.1 christos if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7378 1.1 christos insn -= 2 >> 26; /* convert to ori,oris */
7379 1.1 christos }
7380 1.1 christos else
7381 1.1 christos insn = 0;
7382 1.1 christos return insn;
7383 1.1 christos }
7384 1.1 christos
7385 1.1 christos static bfd_boolean
7386 1.1 christos is_insn_ds_form (unsigned int insn)
7387 1.1 christos {
7388 1.1 christos return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7389 1.1 christos || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7390 1.1 christos || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7391 1.1 christos || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7392 1.1 christos }
7393 1.1 christos
7394 1.1 christos static bfd_boolean
7395 1.1 christos is_insn_dq_form (unsigned int insn)
7396 1.1 christos {
7397 1.1 christos return (insn & (0x3f << 26)) == 56u << 26; /* lq */
7398 1.1 christos }
7399 1.1 christos
7400 1.1 christos /* The RELOCATE_SECTION function is called by the ELF backend linker
7401 1.1 christos to handle the relocations for a section.
7402 1.1 christos
7403 1.1 christos The relocs are always passed as Rela structures; if the section
7404 1.1 christos actually uses Rel structures, the r_addend field will always be
7405 1.1 christos zero.
7406 1.1 christos
7407 1.1 christos This function is responsible for adjust the section contents as
7408 1.1 christos necessary, and (if using Rela relocs and generating a
7409 1.1 christos relocatable output file) adjusting the reloc addend as
7410 1.1 christos necessary.
7411 1.1 christos
7412 1.1 christos This function does not have to worry about setting the reloc
7413 1.1 christos address or the reloc symbol index.
7414 1.1 christos
7415 1.1 christos LOCAL_SYMS is a pointer to the swapped in local symbols.
7416 1.1 christos
7417 1.1 christos LOCAL_SECTIONS is an array giving the section in the input file
7418 1.1 christos corresponding to the st_shndx field of each local symbol.
7419 1.1 christos
7420 1.1 christos The global hash table entry for the global symbols can be found
7421 1.1 christos via elf_sym_hashes (input_bfd).
7422 1.1 christos
7423 1.1 christos When generating relocatable output, this function must handle
7424 1.1 christos STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7425 1.1 christos going to be the section symbol corresponding to the output
7426 1.1 christos section, which means that the addend must be adjusted
7427 1.1 christos accordingly. */
7428 1.1 christos
7429 1.1 christos static bfd_boolean
7430 1.1 christos ppc_elf_relocate_section (bfd *output_bfd,
7431 1.1 christos struct bfd_link_info *info,
7432 1.1 christos bfd *input_bfd,
7433 1.1 christos asection *input_section,
7434 1.1 christos bfd_byte *contents,
7435 1.1 christos Elf_Internal_Rela *relocs,
7436 1.1 christos Elf_Internal_Sym *local_syms,
7437 1.1 christos asection **local_sections)
7438 1.1 christos {
7439 1.1 christos Elf_Internal_Shdr *symtab_hdr;
7440 1.1 christos struct elf_link_hash_entry **sym_hashes;
7441 1.1 christos struct ppc_elf_link_hash_table *htab;
7442 1.1 christos Elf_Internal_Rela *rel;
7443 1.1 christos Elf_Internal_Rela *relend;
7444 1.1 christos Elf_Internal_Rela outrel;
7445 1.1 christos asection *got2;
7446 1.1 christos bfd_vma *local_got_offsets;
7447 1.1 christos bfd_boolean ret = TRUE;
7448 1.1 christos bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
7449 1.1 christos bfd_boolean is_vxworks_tls;
7450 1.1 christos
7451 1.1 christos #ifdef DEBUG
7452 1.1 christos _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7453 1.1 christos "%ld relocations%s",
7454 1.1 christos input_bfd, input_section,
7455 1.1 christos (long) input_section->reloc_count,
7456 1.1 christos (info->relocatable) ? " (relocatable)" : "");
7457 1.1 christos #endif
7458 1.1 christos
7459 1.1 christos got2 = bfd_get_section_by_name (input_bfd, ".got2");
7460 1.1 christos
7461 1.1 christos /* Initialize howto table if not already done. */
7462 1.1 christos if (!ppc_elf_howto_table[R_PPC_ADDR32])
7463 1.1 christos ppc_elf_howto_init ();
7464 1.1 christos
7465 1.1 christos htab = ppc_elf_hash_table (info);
7466 1.1 christos local_got_offsets = elf_local_got_offsets (input_bfd);
7467 1.1 christos symtab_hdr = &elf_symtab_hdr (input_bfd);
7468 1.1 christos sym_hashes = elf_sym_hashes (input_bfd);
7469 1.1 christos /* We have to handle relocations in vxworks .tls_vars sections
7470 1.1 christos specially, because the dynamic loader is 'weird'. */
7471 1.1 christos is_vxworks_tls = (htab->is_vxworks && info->shared
7472 1.1 christos && !strcmp (input_section->output_section->name,
7473 1.1 christos ".tls_vars"));
7474 1.1 christos rel = relocs;
7475 1.1 christos relend = relocs + input_section->reloc_count;
7476 1.1 christos for (; rel < relend; rel++)
7477 1.1 christos {
7478 1.1 christos enum elf_ppc_reloc_type r_type;
7479 1.1 christos bfd_vma addend;
7480 1.1 christos bfd_reloc_status_type r;
7481 1.1 christos Elf_Internal_Sym *sym;
7482 1.1 christos asection *sec;
7483 1.1 christos struct elf_link_hash_entry *h;
7484 1.1 christos const char *sym_name;
7485 1.1 christos reloc_howto_type *howto;
7486 1.1 christos unsigned long r_symndx;
7487 1.1 christos bfd_vma relocation;
7488 1.1 christos bfd_vma branch_bit, from;
7489 1.1 christos bfd_boolean unresolved_reloc;
7490 1.1 christos bfd_boolean warned;
7491 1.1 christos unsigned int tls_type, tls_mask, tls_gd;
7492 1.1 christos struct plt_entry **ifunc;
7493 1.1 christos
7494 1.1 christos r_type = ELF32_R_TYPE (rel->r_info);
7495 1.1 christos sym = NULL;
7496 1.1 christos sec = NULL;
7497 1.1 christos h = NULL;
7498 1.1 christos unresolved_reloc = FALSE;
7499 1.1 christos warned = FALSE;
7500 1.1 christos r_symndx = ELF32_R_SYM (rel->r_info);
7501 1.1 christos
7502 1.1 christos if (r_symndx < symtab_hdr->sh_info)
7503 1.1 christos {
7504 1.1 christos sym = local_syms + r_symndx;
7505 1.1 christos sec = local_sections[r_symndx];
7506 1.1 christos sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7507 1.1 christos
7508 1.1 christos relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7509 1.1 christos }
7510 1.1 christos else
7511 1.1 christos {
7512 1.1 christos bfd_boolean ignored;
7513 1.1 christos
7514 1.1 christos RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7515 1.1 christos r_symndx, symtab_hdr, sym_hashes,
7516 1.1 christos h, sec, relocation,
7517 1.1 christos unresolved_reloc, warned, ignored);
7518 1.1 christos
7519 1.1 christos sym_name = h->root.root.string;
7520 1.1 christos }
7521 1.1 christos
7522 1.1 christos if (sec != NULL && discarded_section (sec))
7523 1.1 christos {
7524 1.1 christos /* For relocs against symbols from removed linkonce sections,
7525 1.1 christos or sections discarded by a linker script, we just want the
7526 1.1 christos section contents zeroed. Avoid any special processing. */
7527 1.1 christos howto = NULL;
7528 1.1 christos if (r_type < R_PPC_max)
7529 1.1 christos howto = ppc_elf_howto_table[r_type];
7530 1.1 christos RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
7531 1.1 christos rel, 1, relend, howto, 0, contents);
7532 1.1 christos }
7533 1.1 christos
7534 1.1 christos if (info->relocatable)
7535 1.1 christos {
7536 1.1 christos if (got2 != NULL
7537 1.1 christos && r_type == R_PPC_PLTREL24
7538 1.1 christos && rel->r_addend != 0)
7539 1.1 christos {
7540 1.1 christos /* R_PPC_PLTREL24 is rather special. If non-zero, the
7541 1.1 christos addend specifies the GOT pointer offset within .got2. */
7542 1.1 christos rel->r_addend += got2->output_offset;
7543 1.1 christos }
7544 1.1 christos continue;
7545 1.1 christos }
7546 1.1 christos
7547 1.1 christos /* TLS optimizations. Replace instruction sequences and relocs
7548 1.1 christos based on information we collected in tls_optimize. We edit
7549 1.1 christos RELOCS so that --emit-relocs will output something sensible
7550 1.1 christos for the final instruction stream. */
7551 1.1 christos tls_mask = 0;
7552 1.1 christos tls_gd = 0;
7553 1.1 christos if (h != NULL)
7554 1.1 christos tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7555 1.1 christos else if (local_got_offsets != NULL)
7556 1.1 christos {
7557 1.1 christos struct plt_entry **local_plt;
7558 1.1 christos char *lgot_masks;
7559 1.1 christos local_plt
7560 1.1 christos = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7561 1.1 christos lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7562 1.1 christos tls_mask = lgot_masks[r_symndx];
7563 1.1 christos }
7564 1.1 christos
7565 1.1 christos /* Ensure reloc mapping code below stays sane. */
7566 1.1 christos if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7567 1.1 christos || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7568 1.1 christos || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7569 1.1 christos || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7570 1.1 christos || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7571 1.1 christos || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7572 1.1 christos || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7573 1.1 christos || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7574 1.1 christos abort ();
7575 1.1 christos switch (r_type)
7576 1.1 christos {
7577 1.1 christos default:
7578 1.1 christos break;
7579 1.1 christos
7580 1.1 christos case R_PPC_GOT_TPREL16:
7581 1.1 christos case R_PPC_GOT_TPREL16_LO:
7582 1.1 christos if ((tls_mask & TLS_TLS) != 0
7583 1.1 christos && (tls_mask & TLS_TPREL) == 0)
7584 1.1 christos {
7585 1.1 christos bfd_vma insn;
7586 1.1 christos
7587 1.1 christos insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
7588 1.1 christos insn &= 31 << 21;
7589 1.1 christos insn |= 0x3c020000; /* addis 0,2,0 */
7590 1.1 christos bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
7591 1.1 christos r_type = R_PPC_TPREL16_HA;
7592 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7593 1.1 christos }
7594 1.1 christos break;
7595 1.1 christos
7596 1.1 christos case R_PPC_TLS:
7597 1.1 christos if ((tls_mask & TLS_TLS) != 0
7598 1.1 christos && (tls_mask & TLS_TPREL) == 0)
7599 1.1 christos {
7600 1.1 christos bfd_vma insn;
7601 1.1 christos
7602 1.1 christos insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7603 1.1 christos insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7604 1.1 christos if (insn == 0)
7605 1.1 christos abort ();
7606 1.1 christos bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7607 1.1 christos r_type = R_PPC_TPREL16_LO;
7608 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7609 1.1 christos
7610 1.1 christos /* Was PPC_TLS which sits on insn boundary, now
7611 1.1 christos PPC_TPREL16_LO which is at low-order half-word. */
7612 1.1 christos rel->r_offset += d_offset;
7613 1.1 christos }
7614 1.1 christos break;
7615 1.1 christos
7616 1.1 christos case R_PPC_GOT_TLSGD16_HI:
7617 1.1 christos case R_PPC_GOT_TLSGD16_HA:
7618 1.1 christos tls_gd = TLS_TPRELGD;
7619 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7620 1.1 christos goto tls_gdld_hi;
7621 1.1 christos break;
7622 1.1 christos
7623 1.1 christos case R_PPC_GOT_TLSLD16_HI:
7624 1.1 christos case R_PPC_GOT_TLSLD16_HA:
7625 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7626 1.1 christos {
7627 1.1 christos tls_gdld_hi:
7628 1.1 christos if ((tls_mask & tls_gd) != 0)
7629 1.1 christos r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7630 1.1 christos + R_PPC_GOT_TPREL16);
7631 1.1 christos else
7632 1.1 christos {
7633 1.1 christos bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7634 1.1 christos rel->r_offset -= d_offset;
7635 1.1 christos r_type = R_PPC_NONE;
7636 1.1 christos }
7637 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7638 1.1 christos }
7639 1.1 christos break;
7640 1.1 christos
7641 1.1 christos case R_PPC_GOT_TLSGD16:
7642 1.1 christos case R_PPC_GOT_TLSGD16_LO:
7643 1.1 christos tls_gd = TLS_TPRELGD;
7644 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7645 1.1 christos goto tls_ldgd_opt;
7646 1.1 christos break;
7647 1.1 christos
7648 1.1 christos case R_PPC_GOT_TLSLD16:
7649 1.1 christos case R_PPC_GOT_TLSLD16_LO:
7650 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7651 1.1 christos {
7652 1.1 christos unsigned int insn1, insn2;
7653 1.1 christos bfd_vma offset;
7654 1.1 christos
7655 1.1 christos tls_ldgd_opt:
7656 1.1 christos offset = (bfd_vma) -1;
7657 1.1 christos /* If not using the newer R_PPC_TLSGD/LD to mark
7658 1.1 christos __tls_get_addr calls, we must trust that the call
7659 1.1 christos stays with its arg setup insns, ie. that the next
7660 1.1 christos reloc is the __tls_get_addr call associated with
7661 1.1 christos the current reloc. Edit both insns. */
7662 1.1 christos if (input_section->has_tls_get_addr_call
7663 1.1 christos && rel + 1 < relend
7664 1.1 christos && branch_reloc_hash_match (input_bfd, rel + 1,
7665 1.1 christos htab->tls_get_addr))
7666 1.1 christos offset = rel[1].r_offset;
7667 1.1 christos if ((tls_mask & tls_gd) != 0)
7668 1.1 christos {
7669 1.1 christos /* IE */
7670 1.1 christos insn1 = bfd_get_32 (output_bfd,
7671 1.1 christos contents + rel->r_offset - d_offset);
7672 1.1 christos insn1 &= (1 << 26) - 1;
7673 1.1 christos insn1 |= 32 << 26; /* lwz */
7674 1.1 christos if (offset != (bfd_vma) -1)
7675 1.1 christos {
7676 1.1 christos rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7677 1.1 christos insn2 = 0x7c631214; /* add 3,3,2 */
7678 1.1 christos bfd_put_32 (output_bfd, insn2, contents + offset);
7679 1.1 christos }
7680 1.1 christos r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7681 1.1 christos + R_PPC_GOT_TPREL16);
7682 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7683 1.1 christos }
7684 1.1 christos else
7685 1.1 christos {
7686 1.1 christos /* LE */
7687 1.1 christos insn1 = 0x3c620000; /* addis 3,2,0 */
7688 1.1 christos if (tls_gd == 0)
7689 1.1 christos {
7690 1.1 christos /* Was an LD reloc. */
7691 1.1 christos for (r_symndx = 0;
7692 1.1 christos r_symndx < symtab_hdr->sh_info;
7693 1.1 christos r_symndx++)
7694 1.1 christos if (local_sections[r_symndx] == sec)
7695 1.1 christos break;
7696 1.1 christos if (r_symndx >= symtab_hdr->sh_info)
7697 1.1 christos r_symndx = STN_UNDEF;
7698 1.1 christos rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7699 1.1 christos if (r_symndx != STN_UNDEF)
7700 1.1 christos rel->r_addend -= (local_syms[r_symndx].st_value
7701 1.1 christos + sec->output_offset
7702 1.1 christos + sec->output_section->vma);
7703 1.1 christos }
7704 1.1 christos r_type = R_PPC_TPREL16_HA;
7705 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7706 1.1 christos if (offset != (bfd_vma) -1)
7707 1.1 christos {
7708 1.1 christos rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7709 1.1 christos rel[1].r_offset = offset + d_offset;
7710 1.1 christos rel[1].r_addend = rel->r_addend;
7711 1.1 christos insn2 = 0x38630000; /* addi 3,3,0 */
7712 1.1 christos bfd_put_32 (output_bfd, insn2, contents + offset);
7713 1.1 christos }
7714 1.1 christos }
7715 1.1 christos bfd_put_32 (output_bfd, insn1,
7716 1.1 christos contents + rel->r_offset - d_offset);
7717 1.1 christos if (tls_gd == 0)
7718 1.1 christos {
7719 1.1 christos /* We changed the symbol on an LD reloc. Start over
7720 1.1 christos in order to get h, sym, sec etc. right. */
7721 1.1 christos rel--;
7722 1.1 christos continue;
7723 1.1 christos }
7724 1.1 christos }
7725 1.1 christos break;
7726 1.1 christos
7727 1.1 christos case R_PPC_TLSGD:
7728 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7729 1.1 christos {
7730 1.1 christos unsigned int insn2;
7731 1.1 christos bfd_vma offset = rel->r_offset;
7732 1.1 christos
7733 1.1 christos if ((tls_mask & TLS_TPRELGD) != 0)
7734 1.1 christos {
7735 1.1 christos /* IE */
7736 1.1 christos r_type = R_PPC_NONE;
7737 1.1 christos insn2 = 0x7c631214; /* add 3,3,2 */
7738 1.1 christos }
7739 1.1 christos else
7740 1.1 christos {
7741 1.1 christos /* LE */
7742 1.1 christos r_type = R_PPC_TPREL16_LO;
7743 1.1 christos rel->r_offset += d_offset;
7744 1.1 christos insn2 = 0x38630000; /* addi 3,3,0 */
7745 1.1 christos }
7746 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7747 1.1 christos bfd_put_32 (output_bfd, insn2, contents + offset);
7748 1.1 christos /* Zap the reloc on the _tls_get_addr call too. */
7749 1.1 christos BFD_ASSERT (offset == rel[1].r_offset);
7750 1.1 christos rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7751 1.1 christos }
7752 1.1 christos break;
7753 1.1 christos
7754 1.1 christos case R_PPC_TLSLD:
7755 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7756 1.1 christos {
7757 1.1 christos unsigned int insn2;
7758 1.1 christos
7759 1.1 christos for (r_symndx = 0;
7760 1.1 christos r_symndx < symtab_hdr->sh_info;
7761 1.1 christos r_symndx++)
7762 1.1 christos if (local_sections[r_symndx] == sec)
7763 1.1 christos break;
7764 1.1 christos if (r_symndx >= symtab_hdr->sh_info)
7765 1.1 christos r_symndx = STN_UNDEF;
7766 1.1 christos rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7767 1.1 christos if (r_symndx != STN_UNDEF)
7768 1.1 christos rel->r_addend -= (local_syms[r_symndx].st_value
7769 1.1 christos + sec->output_offset
7770 1.1 christos + sec->output_section->vma);
7771 1.1 christos
7772 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7773 1.1 christos rel->r_offset += d_offset;
7774 1.1 christos insn2 = 0x38630000; /* addi 3,3,0 */
7775 1.1 christos bfd_put_32 (output_bfd, insn2,
7776 1.1 christos contents + rel->r_offset - d_offset);
7777 1.1 christos /* Zap the reloc on the _tls_get_addr call too. */
7778 1.1 christos BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
7779 1.1 christos rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7780 1.1 christos rel--;
7781 1.1 christos continue;
7782 1.1 christos }
7783 1.1 christos break;
7784 1.1 christos }
7785 1.1 christos
7786 1.1 christos /* Handle other relocations that tweak non-addend part of insn. */
7787 1.1 christos branch_bit = 0;
7788 1.1 christos switch (r_type)
7789 1.1 christos {
7790 1.1 christos default:
7791 1.1 christos break;
7792 1.1 christos
7793 1.1 christos /* Branch taken prediction relocations. */
7794 1.1 christos case R_PPC_ADDR14_BRTAKEN:
7795 1.1 christos case R_PPC_REL14_BRTAKEN:
7796 1.1 christos branch_bit = BRANCH_PREDICT_BIT;
7797 1.1 christos /* Fall thru */
7798 1.1 christos
7799 1.1 christos /* Branch not taken prediction relocations. */
7800 1.1 christos case R_PPC_ADDR14_BRNTAKEN:
7801 1.1 christos case R_PPC_REL14_BRNTAKEN:
7802 1.1 christos {
7803 1.1 christos bfd_vma insn;
7804 1.1 christos
7805 1.1 christos insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7806 1.1 christos insn &= ~BRANCH_PREDICT_BIT;
7807 1.1 christos insn |= branch_bit;
7808 1.1 christos
7809 1.1 christos from = (rel->r_offset
7810 1.1 christos + input_section->output_offset
7811 1.1 christos + input_section->output_section->vma);
7812 1.1 christos
7813 1.1 christos /* Invert 'y' bit if not the default. */
7814 1.1 christos if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
7815 1.1 christos insn ^= BRANCH_PREDICT_BIT;
7816 1.1 christos
7817 1.1 christos bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7818 1.1 christos break;
7819 1.1 christos }
7820 1.1 christos }
7821 1.1 christos
7822 1.1 christos ifunc = NULL;
7823 1.1 christos if (!htab->is_vxworks)
7824 1.1 christos {
7825 1.1 christos struct plt_entry *ent;
7826 1.1 christos
7827 1.1 christos if (h != NULL)
7828 1.1 christos {
7829 1.1 christos if (h->type == STT_GNU_IFUNC)
7830 1.1 christos ifunc = &h->plt.plist;
7831 1.1 christos }
7832 1.1 christos else if (local_got_offsets != NULL
7833 1.1 christos && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
7834 1.1 christos {
7835 1.1 christos struct plt_entry **local_plt;
7836 1.1 christos
7837 1.1 christos local_plt = (struct plt_entry **) (local_got_offsets
7838 1.1 christos + symtab_hdr->sh_info);
7839 1.1 christos ifunc = local_plt + r_symndx;
7840 1.1 christos }
7841 1.1 christos
7842 1.1 christos ent = NULL;
7843 1.1 christos if (ifunc != NULL
7844 1.1 christos && (!info->shared
7845 1.1 christos || is_branch_reloc (r_type)))
7846 1.1 christos {
7847 1.1 christos addend = 0;
7848 1.1 christos if (r_type == R_PPC_PLTREL24 && info->shared)
7849 1.1 christos addend = rel->r_addend;
7850 1.1 christos ent = find_plt_ent (ifunc, got2, addend);
7851 1.1 christos }
7852 1.1 christos if (ent != NULL)
7853 1.1 christos {
7854 1.1 christos if (h == NULL && (ent->plt.offset & 1) == 0)
7855 1.1 christos {
7856 1.1 christos Elf_Internal_Rela rela;
7857 1.1 christos bfd_byte *loc;
7858 1.1 christos
7859 1.1 christos rela.r_offset = (htab->iplt->output_section->vma
7860 1.1 christos + htab->iplt->output_offset
7861 1.1 christos + ent->plt.offset);
7862 1.1 christos rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7863 1.1 christos rela.r_addend = relocation;
7864 1.1 christos loc = htab->reliplt->contents;
7865 1.1 christos loc += (htab->reliplt->reloc_count++
7866 1.1 christos * sizeof (Elf32_External_Rela));
7867 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7868 1.1 christos
7869 1.1 christos ent->plt.offset |= 1;
7870 1.1 christos }
7871 1.1 christos if (h == NULL && (ent->glink_offset & 1) == 0)
7872 1.1 christos {
7873 1.1 christos unsigned char *p = ((unsigned char *) htab->glink->contents
7874 1.1 christos + ent->glink_offset);
7875 1.1 christos write_glink_stub (ent, htab->iplt, p, info);
7876 1.1 christos ent->glink_offset |= 1;
7877 1.1 christos }
7878 1.1 christos
7879 1.1 christos unresolved_reloc = FALSE;
7880 1.1 christos if (htab->plt_type == PLT_NEW
7881 1.1 christos || !htab->elf.dynamic_sections_created
7882 1.1 christos || h == NULL)
7883 1.1 christos relocation = (htab->glink->output_section->vma
7884 1.1 christos + htab->glink->output_offset
7885 1.1 christos + (ent->glink_offset & ~1));
7886 1.1 christos else
7887 1.1 christos relocation = (htab->plt->output_section->vma
7888 1.1 christos + htab->plt->output_offset
7889 1.1 christos + ent->plt.offset);
7890 1.1 christos }
7891 1.1 christos }
7892 1.1 christos
7893 1.1 christos addend = rel->r_addend;
7894 1.1 christos tls_type = 0;
7895 1.1 christos howto = NULL;
7896 1.1 christos if (r_type < R_PPC_max)
7897 1.1 christos howto = ppc_elf_howto_table[r_type];
7898 1.1 christos switch (r_type)
7899 1.1 christos {
7900 1.1 christos default:
7901 1.1 christos info->callbacks->einfo
7902 1.1 christos (_("%P: %B: unknown relocation type %d for symbol %s\n"),
7903 1.1 christos input_bfd, (int) r_type, sym_name);
7904 1.1 christos
7905 1.1 christos bfd_set_error (bfd_error_bad_value);
7906 1.1 christos ret = FALSE;
7907 1.1 christos continue;
7908 1.1 christos
7909 1.1 christos case R_PPC_NONE:
7910 1.1 christos case R_PPC_TLS:
7911 1.1 christos case R_PPC_TLSGD:
7912 1.1 christos case R_PPC_TLSLD:
7913 1.1 christos case R_PPC_EMB_MRKREF:
7914 1.1 christos case R_PPC_GNU_VTINHERIT:
7915 1.1 christos case R_PPC_GNU_VTENTRY:
7916 1.1 christos continue;
7917 1.1 christos
7918 1.1 christos /* GOT16 relocations. Like an ADDR16 using the symbol's
7919 1.1 christos address in the GOT as relocation value instead of the
7920 1.1 christos symbol's value itself. Also, create a GOT entry for the
7921 1.1 christos symbol and put the symbol value there. */
7922 1.1 christos case R_PPC_GOT_TLSGD16:
7923 1.1 christos case R_PPC_GOT_TLSGD16_LO:
7924 1.1 christos case R_PPC_GOT_TLSGD16_HI:
7925 1.1 christos case R_PPC_GOT_TLSGD16_HA:
7926 1.1 christos tls_type = TLS_TLS | TLS_GD;
7927 1.1 christos goto dogot;
7928 1.1 christos
7929 1.1 christos case R_PPC_GOT_TLSLD16:
7930 1.1 christos case R_PPC_GOT_TLSLD16_LO:
7931 1.1 christos case R_PPC_GOT_TLSLD16_HI:
7932 1.1 christos case R_PPC_GOT_TLSLD16_HA:
7933 1.1 christos tls_type = TLS_TLS | TLS_LD;
7934 1.1 christos goto dogot;
7935 1.1 christos
7936 1.1 christos case R_PPC_GOT_TPREL16:
7937 1.1 christos case R_PPC_GOT_TPREL16_LO:
7938 1.1 christos case R_PPC_GOT_TPREL16_HI:
7939 1.1 christos case R_PPC_GOT_TPREL16_HA:
7940 1.1 christos tls_type = TLS_TLS | TLS_TPREL;
7941 1.1 christos goto dogot;
7942 1.1 christos
7943 1.1 christos case R_PPC_GOT_DTPREL16:
7944 1.1 christos case R_PPC_GOT_DTPREL16_LO:
7945 1.1 christos case R_PPC_GOT_DTPREL16_HI:
7946 1.1 christos case R_PPC_GOT_DTPREL16_HA:
7947 1.1 christos tls_type = TLS_TLS | TLS_DTPREL;
7948 1.1 christos goto dogot;
7949 1.1 christos
7950 1.1 christos case R_PPC_GOT16:
7951 1.1 christos case R_PPC_GOT16_LO:
7952 1.1 christos case R_PPC_GOT16_HI:
7953 1.1 christos case R_PPC_GOT16_HA:
7954 1.1 christos tls_mask = 0;
7955 1.1 christos dogot:
7956 1.1 christos {
7957 1.1 christos /* Relocation is to the entry for this symbol in the global
7958 1.1 christos offset table. */
7959 1.1 christos bfd_vma off;
7960 1.1 christos bfd_vma *offp;
7961 1.1 christos unsigned long indx;
7962 1.1 christos
7963 1.1 christos if (htab->got == NULL)
7964 1.1 christos abort ();
7965 1.1 christos
7966 1.1 christos indx = 0;
7967 1.1 christos if (tls_type == (TLS_TLS | TLS_LD)
7968 1.1 christos && (h == NULL
7969 1.1 christos || !h->def_dynamic))
7970 1.1 christos offp = &htab->tlsld_got.offset;
7971 1.1 christos else if (h != NULL)
7972 1.1 christos {
7973 1.1 christos bfd_boolean dyn;
7974 1.1 christos dyn = htab->elf.dynamic_sections_created;
7975 1.1 christos if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7976 1.1 christos || (info->shared
7977 1.1 christos && SYMBOL_REFERENCES_LOCAL (info, h)))
7978 1.1 christos /* This is actually a static link, or it is a
7979 1.1 christos -Bsymbolic link and the symbol is defined
7980 1.1 christos locally, or the symbol was forced to be local
7981 1.1 christos because of a version file. */
7982 1.1 christos ;
7983 1.1 christos else
7984 1.1 christos {
7985 1.1 christos BFD_ASSERT (h->dynindx != -1);
7986 1.1 christos indx = h->dynindx;
7987 1.1 christos unresolved_reloc = FALSE;
7988 1.1 christos }
7989 1.1 christos offp = &h->got.offset;
7990 1.1 christos }
7991 1.1 christos else
7992 1.1 christos {
7993 1.1 christos if (local_got_offsets == NULL)
7994 1.1 christos abort ();
7995 1.1 christos offp = &local_got_offsets[r_symndx];
7996 1.1 christos }
7997 1.1 christos
7998 1.1 christos /* The offset must always be a multiple of 4. We use the
7999 1.1 christos least significant bit to record whether we have already
8000 1.1 christos processed this entry. */
8001 1.1 christos off = *offp;
8002 1.1 christos if ((off & 1) != 0)
8003 1.1 christos off &= ~1;
8004 1.1 christos else
8005 1.1 christos {
8006 1.1 christos unsigned int tls_m = (tls_mask
8007 1.1 christos & (TLS_LD | TLS_GD | TLS_DTPREL
8008 1.1 christos | TLS_TPREL | TLS_TPRELGD));
8009 1.1 christos
8010 1.1 christos if (offp == &htab->tlsld_got.offset)
8011 1.1 christos tls_m = TLS_LD;
8012 1.1 christos else if (h == NULL
8013 1.1 christos || !h->def_dynamic)
8014 1.1 christos tls_m &= ~TLS_LD;
8015 1.1 christos
8016 1.1 christos /* We might have multiple got entries for this sym.
8017 1.1 christos Initialize them all. */
8018 1.1 christos do
8019 1.1 christos {
8020 1.1 christos int tls_ty = 0;
8021 1.1 christos
8022 1.1 christos if ((tls_m & TLS_LD) != 0)
8023 1.1 christos {
8024 1.1 christos tls_ty = TLS_TLS | TLS_LD;
8025 1.1 christos tls_m &= ~TLS_LD;
8026 1.1 christos }
8027 1.1 christos else if ((tls_m & TLS_GD) != 0)
8028 1.1 christos {
8029 1.1 christos tls_ty = TLS_TLS | TLS_GD;
8030 1.1 christos tls_m &= ~TLS_GD;
8031 1.1 christos }
8032 1.1 christos else if ((tls_m & TLS_DTPREL) != 0)
8033 1.1 christos {
8034 1.1 christos tls_ty = TLS_TLS | TLS_DTPREL;
8035 1.1 christos tls_m &= ~TLS_DTPREL;
8036 1.1 christos }
8037 1.1 christos else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8038 1.1 christos {
8039 1.1 christos tls_ty = TLS_TLS | TLS_TPREL;
8040 1.1 christos tls_m = 0;
8041 1.1 christos }
8042 1.1 christos
8043 1.1 christos /* Generate relocs for the dynamic linker. */
8044 1.1 christos if ((info->shared || indx != 0)
8045 1.1 christos && (offp == &htab->tlsld_got.offset
8046 1.1 christos || h == NULL
8047 1.1 christos || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8048 1.1 christos || h->root.type != bfd_link_hash_undefweak))
8049 1.1 christos {
8050 1.1 christos asection *rsec = htab->relgot;
8051 1.1 christos bfd_byte * loc;
8052 1.1 christos
8053 1.1 christos if (ifunc != NULL)
8054 1.1 christos rsec = htab->reliplt;
8055 1.1 christos outrel.r_offset = (htab->got->output_section->vma
8056 1.1 christos + htab->got->output_offset
8057 1.1 christos + off);
8058 1.1 christos outrel.r_addend = 0;
8059 1.1 christos if (tls_ty & (TLS_LD | TLS_GD))
8060 1.1 christos {
8061 1.1 christos outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8062 1.1 christos if (tls_ty == (TLS_TLS | TLS_GD))
8063 1.1 christos {
8064 1.1 christos loc = rsec->contents;
8065 1.1 christos loc += (rsec->reloc_count++
8066 1.1 christos * sizeof (Elf32_External_Rela));
8067 1.1 christos bfd_elf32_swap_reloca_out (output_bfd,
8068 1.1 christos &outrel, loc);
8069 1.1 christos outrel.r_offset += 4;
8070 1.1 christos outrel.r_info
8071 1.1 christos = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8072 1.1 christos }
8073 1.1 christos }
8074 1.1 christos else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8075 1.1 christos outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8076 1.1 christos else if (tls_ty == (TLS_TLS | TLS_TPREL))
8077 1.1 christos outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8078 1.1 christos else if (indx != 0)
8079 1.1 christos outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8080 1.1 christos else if (ifunc != NULL)
8081 1.1 christos outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8082 1.1 christos else
8083 1.1 christos outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8084 1.1 christos if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8085 1.1 christos {
8086 1.1 christos outrel.r_addend += relocation;
8087 1.1 christos if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8088 1.1 christos outrel.r_addend -= htab->elf.tls_sec->vma;
8089 1.1 christos }
8090 1.1 christos loc = rsec->contents;
8091 1.1 christos loc += (rsec->reloc_count++
8092 1.1 christos * sizeof (Elf32_External_Rela));
8093 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8094 1.1 christos }
8095 1.1 christos
8096 1.1 christos /* Init the .got section contents if we're not
8097 1.1 christos emitting a reloc. */
8098 1.1 christos else
8099 1.1 christos {
8100 1.1 christos bfd_vma value = relocation;
8101 1.1 christos
8102 1.1 christos if (tls_ty == (TLS_TLS | TLS_LD))
8103 1.1 christos value = 1;
8104 1.1 christos else if (tls_ty != 0)
8105 1.1 christos {
8106 1.1 christos value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8107 1.1 christos if (tls_ty == (TLS_TLS | TLS_TPREL))
8108 1.1 christos value += DTP_OFFSET - TP_OFFSET;
8109 1.1 christos
8110 1.1 christos if (tls_ty == (TLS_TLS | TLS_GD))
8111 1.1 christos {
8112 1.1 christos bfd_put_32 (output_bfd, value,
8113 1.1 christos htab->got->contents + off + 4);
8114 1.1 christos value = 1;
8115 1.1 christos }
8116 1.1 christos }
8117 1.1 christos bfd_put_32 (output_bfd, value,
8118 1.1 christos htab->got->contents + off);
8119 1.1 christos }
8120 1.1 christos
8121 1.1 christos off += 4;
8122 1.1 christos if (tls_ty & (TLS_LD | TLS_GD))
8123 1.1 christos off += 4;
8124 1.1 christos }
8125 1.1 christos while (tls_m != 0);
8126 1.1 christos
8127 1.1 christos off = *offp;
8128 1.1 christos *offp = off | 1;
8129 1.1 christos }
8130 1.1 christos
8131 1.1 christos if (off >= (bfd_vma) -2)
8132 1.1 christos abort ();
8133 1.1 christos
8134 1.1 christos if ((tls_type & TLS_TLS) != 0)
8135 1.1 christos {
8136 1.1 christos if (tls_type != (TLS_TLS | TLS_LD))
8137 1.1 christos {
8138 1.1 christos if ((tls_mask & TLS_LD) != 0
8139 1.1 christos && !(h == NULL
8140 1.1 christos || !h->def_dynamic))
8141 1.1 christos off += 8;
8142 1.1 christos if (tls_type != (TLS_TLS | TLS_GD))
8143 1.1 christos {
8144 1.1 christos if ((tls_mask & TLS_GD) != 0)
8145 1.1 christos off += 8;
8146 1.1 christos if (tls_type != (TLS_TLS | TLS_DTPREL))
8147 1.1 christos {
8148 1.1 christos if ((tls_mask & TLS_DTPREL) != 0)
8149 1.1 christos off += 4;
8150 1.1 christos }
8151 1.1 christos }
8152 1.1 christos }
8153 1.1 christos }
8154 1.1 christos
8155 1.1 christos relocation = (htab->got->output_section->vma
8156 1.1 christos + htab->got->output_offset
8157 1.1 christos + off
8158 1.1 christos - SYM_VAL (htab->elf.hgot));
8159 1.1 christos
8160 1.1 christos /* Addends on got relocations don't make much sense.
8161 1.1 christos x+off@got is actually x@got+off, and since the got is
8162 1.1 christos generated by a hash table traversal, the value in the
8163 1.1 christos got at entry m+n bears little relation to the entry m. */
8164 1.1 christos if (addend != 0)
8165 1.1 christos info->callbacks->einfo
8166 1.1 christos (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
8167 1.1 christos input_bfd, input_section, rel->r_offset,
8168 1.1 christos howto->name,
8169 1.1 christos sym_name);
8170 1.1 christos }
8171 1.1 christos break;
8172 1.1 christos
8173 1.1 christos /* Relocations that need no special processing. */
8174 1.1 christos case R_PPC_LOCAL24PC:
8175 1.1 christos /* It makes no sense to point a local relocation
8176 1.1 christos at a symbol not in this object. */
8177 1.1 christos if (unresolved_reloc)
8178 1.1 christos {
8179 1.1 christos if (! (*info->callbacks->undefined_symbol) (info,
8180 1.1 christos h->root.root.string,
8181 1.1 christos input_bfd,
8182 1.1 christos input_section,
8183 1.1 christos rel->r_offset,
8184 1.1 christos TRUE))
8185 1.1 christos return FALSE;
8186 1.1 christos continue;
8187 1.1 christos }
8188 1.1 christos break;
8189 1.1 christos
8190 1.1 christos case R_PPC_DTPREL16:
8191 1.1 christos case R_PPC_DTPREL16_LO:
8192 1.1 christos case R_PPC_DTPREL16_HI:
8193 1.1 christos case R_PPC_DTPREL16_HA:
8194 1.1 christos addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8195 1.1 christos break;
8196 1.1 christos
8197 1.1 christos /* Relocations that may need to be propagated if this is a shared
8198 1.1 christos object. */
8199 1.1 christos case R_PPC_TPREL16:
8200 1.1 christos case R_PPC_TPREL16_LO:
8201 1.1 christos case R_PPC_TPREL16_HI:
8202 1.1 christos case R_PPC_TPREL16_HA:
8203 1.1 christos if (h != NULL
8204 1.1 christos && h->root.type == bfd_link_hash_undefweak
8205 1.1 christos && h->dynindx == -1)
8206 1.1 christos {
8207 1.1 christos /* Make this relocation against an undefined weak symbol
8208 1.1 christos resolve to zero. This is really just a tweak, since
8209 1.1 christos code using weak externs ought to check that they are
8210 1.1 christos defined before using them. */
8211 1.1 christos bfd_byte *p = contents + rel->r_offset - d_offset;
8212 1.1 christos unsigned int insn = bfd_get_32 (output_bfd, p);
8213 1.1 christos insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8214 1.1 christos if (insn != 0)
8215 1.1 christos bfd_put_32 (output_bfd, insn, p);
8216 1.1 christos break;
8217 1.1 christos }
8218 1.1 christos addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8219 1.1 christos /* The TPREL16 relocs shouldn't really be used in shared
8220 1.1 christos libs as they will result in DT_TEXTREL being set, but
8221 1.1 christos support them anyway. */
8222 1.1 christos goto dodyn;
8223 1.1 christos
8224 1.1 christos case R_PPC_TPREL32:
8225 1.1 christos addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8226 1.1 christos goto dodyn;
8227 1.1 christos
8228 1.1 christos case R_PPC_DTPREL32:
8229 1.1 christos addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8230 1.1 christos goto dodyn;
8231 1.1 christos
8232 1.1 christos case R_PPC_DTPMOD32:
8233 1.1 christos relocation = 1;
8234 1.1 christos addend = 0;
8235 1.1 christos goto dodyn;
8236 1.1 christos
8237 1.1 christos case R_PPC_REL16:
8238 1.1 christos case R_PPC_REL16_LO:
8239 1.1 christos case R_PPC_REL16_HI:
8240 1.1 christos case R_PPC_REL16_HA:
8241 1.1 christos break;
8242 1.1 christos
8243 1.1 christos case R_PPC_REL32:
8244 1.1 christos if (h == NULL || h == htab->elf.hgot)
8245 1.1 christos break;
8246 1.1 christos /* fall through */
8247 1.1 christos
8248 1.1 christos case R_PPC_ADDR32:
8249 1.1 christos case R_PPC_ADDR16:
8250 1.1 christos case R_PPC_ADDR16_LO:
8251 1.1 christos case R_PPC_ADDR16_HI:
8252 1.1 christos case R_PPC_ADDR16_HA:
8253 1.1 christos case R_PPC_UADDR32:
8254 1.1 christos case R_PPC_UADDR16:
8255 1.1 christos goto dodyn;
8256 1.1 christos
8257 1.1 christos case R_PPC_VLE_REL8:
8258 1.1 christos case R_PPC_VLE_REL15:
8259 1.1 christos case R_PPC_VLE_REL24:
8260 1.1 christos case R_PPC_REL24:
8261 1.1 christos case R_PPC_REL14:
8262 1.1 christos case R_PPC_REL14_BRTAKEN:
8263 1.1 christos case R_PPC_REL14_BRNTAKEN:
8264 1.1 christos /* If these relocations are not to a named symbol, they can be
8265 1.1 christos handled right here, no need to bother the dynamic linker. */
8266 1.1 christos if (SYMBOL_CALLS_LOCAL (info, h)
8267 1.1 christos || h == htab->elf.hgot)
8268 1.1 christos break;
8269 1.1 christos /* fall through */
8270 1.1 christos
8271 1.1 christos case R_PPC_ADDR24:
8272 1.1 christos case R_PPC_ADDR14:
8273 1.1 christos case R_PPC_ADDR14_BRTAKEN:
8274 1.1 christos case R_PPC_ADDR14_BRNTAKEN:
8275 1.1 christos if (h != NULL && !info->shared)
8276 1.1 christos break;
8277 1.1 christos /* fall through */
8278 1.1 christos
8279 1.1 christos dodyn:
8280 1.1 christos if ((input_section->flags & SEC_ALLOC) == 0
8281 1.1 christos || is_vxworks_tls)
8282 1.1 christos break;
8283 1.1 christos
8284 1.1 christos if ((info->shared
8285 1.1 christos && !(h != NULL
8286 1.1 christos && ((h->root.type == bfd_link_hash_undefined
8287 1.1 christos && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8288 1.1 christos || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8289 1.1 christos || (h->root.type == bfd_link_hash_undefweak
8290 1.1 christos && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
8291 1.1 christos && (must_be_dyn_reloc (info, r_type)
8292 1.1 christos || !SYMBOL_CALLS_LOCAL (info, h)))
8293 1.1 christos || (ELIMINATE_COPY_RELOCS
8294 1.1 christos && !info->shared
8295 1.1 christos && h != NULL
8296 1.1 christos && h->dynindx != -1
8297 1.1 christos && !h->non_got_ref
8298 1.1 christos && !h->def_regular))
8299 1.1 christos {
8300 1.1 christos int skip;
8301 1.1 christos bfd_byte *loc;
8302 1.1 christos asection *sreloc;
8303 1.1 christos #ifdef DEBUG
8304 1.1 christos fprintf (stderr, "ppc_elf_relocate_section needs to "
8305 1.1 christos "create relocation for %s\n",
8306 1.1 christos (h && h->root.root.string
8307 1.1 christos ? h->root.root.string : "<unknown>"));
8308 1.1 christos #endif
8309 1.1 christos
8310 1.1 christos /* When generating a shared object, these relocations
8311 1.1 christos are copied into the output file to be resolved at run
8312 1.1 christos time. */
8313 1.1 christos sreloc = elf_section_data (input_section)->sreloc;
8314 1.1 christos if (ifunc)
8315 1.1 christos sreloc = htab->reliplt;
8316 1.1 christos if (sreloc == NULL)
8317 1.1 christos return FALSE;
8318 1.1 christos
8319 1.1 christos skip = 0;
8320 1.1 christos outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8321 1.1 christos input_section,
8322 1.1 christos rel->r_offset);
8323 1.1 christos if (outrel.r_offset == (bfd_vma) -1
8324 1.1 christos || outrel.r_offset == (bfd_vma) -2)
8325 1.1 christos skip = (int) outrel.r_offset;
8326 1.1 christos outrel.r_offset += (input_section->output_section->vma
8327 1.1 christos + input_section->output_offset);
8328 1.1 christos
8329 1.1 christos if (skip)
8330 1.1 christos memset (&outrel, 0, sizeof outrel);
8331 1.1 christos else if ((h != NULL
8332 1.1 christos && (h->root.type == bfd_link_hash_undefined
8333 1.1 christos || h->root.type == bfd_link_hash_undefweak))
8334 1.1 christos || !SYMBOL_REFERENCES_LOCAL (info, h))
8335 1.1 christos {
8336 1.1 christos BFD_ASSERT (h->dynindx != -1);
8337 1.1 christos unresolved_reloc = FALSE;
8338 1.1 christos outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8339 1.1 christos outrel.r_addend = rel->r_addend;
8340 1.1 christos }
8341 1.1 christos else
8342 1.1 christos {
8343 1.1 christos outrel.r_addend = relocation + rel->r_addend;
8344 1.1 christos
8345 1.1 christos if (r_type != R_PPC_ADDR32)
8346 1.1 christos {
8347 1.1 christos long indx = 0;
8348 1.1 christos
8349 1.1 christos if (ifunc != NULL)
8350 1.1 christos {
8351 1.1 christos /* If we get here when building a static
8352 1.1 christos executable, then the libc startup function
8353 1.1 christos responsible for applying indirect function
8354 1.1 christos relocations is going to complain about
8355 1.1 christos the reloc type.
8356 1.1 christos If we get here when building a dynamic
8357 1.1 christos executable, it will be because we have
8358 1.1 christos a text relocation. The dynamic loader
8359 1.1 christos will set the text segment writable and
8360 1.1 christos non-executable to apply text relocations.
8361 1.1 christos So we'll segfault when trying to run the
8362 1.1 christos indirection function to resolve the reloc. */
8363 1.1 christos info->callbacks->einfo
8364 1.1 christos (_("%P: %H: relocation %s for indirect "
8365 1.1 christos "function %s unsupported\n"),
8366 1.1 christos input_bfd, input_section, rel->r_offset,
8367 1.1 christos howto->name,
8368 1.1 christos sym_name);
8369 1.1 christos ret = FALSE;
8370 1.1 christos }
8371 1.1 christos else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8372 1.1 christos ;
8373 1.1 christos else if (sec == NULL || sec->owner == NULL)
8374 1.1 christos {
8375 1.1 christos bfd_set_error (bfd_error_bad_value);
8376 1.1 christos ret = FALSE;
8377 1.1 christos }
8378 1.1 christos else
8379 1.1 christos {
8380 1.1 christos asection *osec;
8381 1.1 christos
8382 1.1 christos /* We are turning this relocation into one
8383 1.1 christos against a section symbol. It would be
8384 1.1 christos proper to subtract the symbol's value,
8385 1.1 christos osec->vma, from the emitted reloc addend,
8386 1.1 christos but ld.so expects buggy relocs.
8387 1.1 christos FIXME: Why not always use a zero index? */
8388 1.1 christos osec = sec->output_section;
8389 1.1 christos indx = elf_section_data (osec)->dynindx;
8390 1.1 christos if (indx == 0)
8391 1.1 christos {
8392 1.1 christos osec = htab->elf.text_index_section;
8393 1.1 christos indx = elf_section_data (osec)->dynindx;
8394 1.1 christos }
8395 1.1 christos BFD_ASSERT (indx != 0);
8396 1.1 christos #ifdef DEBUG
8397 1.1 christos if (indx == 0)
8398 1.1 christos printf ("indx=%ld section=%s flags=%08x name=%s\n",
8399 1.1 christos indx, osec->name, osec->flags,
8400 1.1 christos h->root.root.string);
8401 1.1 christos #endif
8402 1.1 christos }
8403 1.1 christos
8404 1.1 christos outrel.r_info = ELF32_R_INFO (indx, r_type);
8405 1.1 christos }
8406 1.1 christos else if (ifunc != NULL)
8407 1.1 christos outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8408 1.1 christos else
8409 1.1 christos outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8410 1.1 christos }
8411 1.1 christos
8412 1.1 christos loc = sreloc->contents;
8413 1.1 christos loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8414 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8415 1.1 christos
8416 1.1 christos if (skip == -1)
8417 1.1 christos continue;
8418 1.1 christos
8419 1.1 christos /* This reloc will be computed at runtime. We clear the memory
8420 1.1 christos so that it contains predictable value. */
8421 1.1 christos if (! skip
8422 1.1 christos && ((input_section->flags & SEC_ALLOC) != 0
8423 1.1 christos || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
8424 1.1 christos {
8425 1.1 christos relocation = howto->pc_relative ? outrel.r_offset : 0;
8426 1.1 christos addend = 0;
8427 1.1 christos break;
8428 1.1 christos }
8429 1.1 christos }
8430 1.1 christos break;
8431 1.1 christos
8432 1.1 christos case R_PPC_RELAX_PLT:
8433 1.1 christos case R_PPC_RELAX_PLTREL24:
8434 1.1 christos if (h != NULL)
8435 1.1 christos {
8436 1.1 christos struct plt_entry *ent;
8437 1.1 christos bfd_vma got2_addend = 0;
8438 1.1 christos
8439 1.1 christos if (r_type == R_PPC_RELAX_PLTREL24)
8440 1.1 christos {
8441 1.1 christos if (info->shared)
8442 1.1 christos got2_addend = addend;
8443 1.1 christos addend = 0;
8444 1.1 christos }
8445 1.1 christos ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8446 1.1 christos if (htab->plt_type == PLT_NEW)
8447 1.1 christos relocation = (htab->glink->output_section->vma
8448 1.1 christos + htab->glink->output_offset
8449 1.1 christos + ent->glink_offset);
8450 1.1 christos else
8451 1.1 christos relocation = (htab->plt->output_section->vma
8452 1.1 christos + htab->plt->output_offset
8453 1.1 christos + ent->plt.offset);
8454 1.1 christos }
8455 1.1 christos /* Fall thru */
8456 1.1 christos
8457 1.1 christos case R_PPC_RELAX:
8458 1.1 christos if (info->shared)
8459 1.1 christos relocation -= (input_section->output_section->vma
8460 1.1 christos + input_section->output_offset
8461 1.1 christos + rel->r_offset - 4);
8462 1.1 christos
8463 1.1 christos {
8464 1.1 christos unsigned long t0;
8465 1.1 christos unsigned long t1;
8466 1.1 christos
8467 1.1 christos t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
8468 1.1 christos t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
8469 1.1 christos
8470 1.1 christos /* We're clearing the bits for R_PPC_ADDR16_HA
8471 1.1 christos and R_PPC_ADDR16_LO here. */
8472 1.1 christos t0 &= ~0xffff;
8473 1.1 christos t1 &= ~0xffff;
8474 1.1 christos
8475 1.1 christos /* t0 is HA, t1 is LO */
8476 1.1 christos relocation += addend;
8477 1.1 christos t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
8478 1.1 christos t1 |= relocation & 0xffff;
8479 1.1 christos
8480 1.1 christos bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
8481 1.1 christos bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
8482 1.1 christos
8483 1.1 christos /* Rewrite the reloc and convert one of the trailing nop
8484 1.1 christos relocs to describe this relocation. */
8485 1.1 christos BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
8486 1.1 christos /* The relocs are at the bottom 2 bytes */
8487 1.1 christos rel[0].r_offset += 2;
8488 1.1 christos memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8489 1.1 christos rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
8490 1.1 christos rel[1].r_offset += 4;
8491 1.1 christos rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
8492 1.1 christos rel++;
8493 1.1 christos }
8494 1.1 christos continue;
8495 1.1 christos
8496 1.1 christos /* Indirect .sdata relocation. */
8497 1.1 christos case R_PPC_EMB_SDAI16:
8498 1.1 christos BFD_ASSERT (htab->sdata[0].section != NULL);
8499 1.1 christos if (!is_static_defined (htab->sdata[0].sym))
8500 1.1 christos {
8501 1.1 christos unresolved_reloc = TRUE;
8502 1.1 christos break;
8503 1.1 christos }
8504 1.1 christos relocation
8505 1.1 christos = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
8506 1.1 christos h, relocation, rel);
8507 1.1 christos addend = 0;
8508 1.1 christos break;
8509 1.1 christos
8510 1.1 christos /* Indirect .sdata2 relocation. */
8511 1.1 christos case R_PPC_EMB_SDA2I16:
8512 1.1 christos BFD_ASSERT (htab->sdata[1].section != NULL);
8513 1.1 christos if (!is_static_defined (htab->sdata[1].sym))
8514 1.1 christos {
8515 1.1 christos unresolved_reloc = TRUE;
8516 1.1 christos break;
8517 1.1 christos }
8518 1.1 christos relocation
8519 1.1 christos = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
8520 1.1 christos h, relocation, rel);
8521 1.1 christos addend = 0;
8522 1.1 christos break;
8523 1.1 christos
8524 1.1 christos /* Handle the TOC16 reloc. We want to use the offset within the .got
8525 1.1 christos section, not the actual VMA. This is appropriate when generating
8526 1.1 christos an embedded ELF object, for which the .got section acts like the
8527 1.1 christos AIX .toc section. */
8528 1.1 christos case R_PPC_TOC16: /* phony GOT16 relocations */
8529 1.1 christos if (sec == NULL || sec->output_section == NULL)
8530 1.1 christos {
8531 1.1 christos unresolved_reloc = TRUE;
8532 1.1 christos break;
8533 1.1 christos }
8534 1.1 christos BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
8535 1.1 christos ".got") == 0
8536 1.1 christos || strcmp (bfd_get_section_name (sec->owner, sec),
8537 1.1 christos ".cgot") == 0);
8538 1.1 christos
8539 1.1 christos addend -= sec->output_section->vma + sec->output_offset + 0x8000;
8540 1.1 christos break;
8541 1.1 christos
8542 1.1 christos case R_PPC_PLTREL24:
8543 1.1 christos if (h != NULL && ifunc == NULL)
8544 1.1 christos {
8545 1.1 christos struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
8546 1.1 christos info->shared ? addend : 0);
8547 1.1 christos if (ent == NULL
8548 1.1 christos || htab->plt == NULL)
8549 1.1 christos {
8550 1.1 christos /* We didn't make a PLT entry for this symbol. This
8551 1.1 christos happens when statically linking PIC code, or when
8552 1.1 christos using -Bsymbolic. */
8553 1.1 christos }
8554 1.1 christos else
8555 1.1 christos {
8556 1.1 christos /* Relocation is to the entry for this symbol in the
8557 1.1 christos procedure linkage table. */
8558 1.1 christos unresolved_reloc = FALSE;
8559 1.1 christos if (htab->plt_type == PLT_NEW)
8560 1.1 christos relocation = (htab->glink->output_section->vma
8561 1.1 christos + htab->glink->output_offset
8562 1.1 christos + ent->glink_offset);
8563 1.1 christos else
8564 1.1 christos relocation = (htab->plt->output_section->vma
8565 1.1 christos + htab->plt->output_offset
8566 1.1 christos + ent->plt.offset);
8567 1.1 christos }
8568 1.1 christos }
8569 1.1 christos
8570 1.1 christos /* R_PPC_PLTREL24 is rather special. If non-zero, the
8571 1.1 christos addend specifies the GOT pointer offset within .got2.
8572 1.1 christos Don't apply it to the relocation field. */
8573 1.1 christos addend = 0;
8574 1.1 christos break;
8575 1.1 christos
8576 1.1 christos /* Relocate against _SDA_BASE_. */
8577 1.1 christos case R_PPC_SDAREL16:
8578 1.1 christos {
8579 1.1 christos const char *name;
8580 1.1 christos struct elf_link_hash_entry *sda = htab->sdata[0].sym;
8581 1.1 christos
8582 1.1 christos if (sec == NULL
8583 1.1 christos || sec->output_section == NULL
8584 1.1 christos || !is_static_defined (sda))
8585 1.1 christos {
8586 1.1 christos unresolved_reloc = TRUE;
8587 1.1 christos break;
8588 1.1 christos }
8589 1.1 christos addend -= SYM_VAL (sda);
8590 1.1 christos
8591 1.1 christos name = bfd_get_section_name (output_bfd, sec->output_section);
8592 1.1 christos if (! ((CONST_STRNEQ (name, ".sdata")
8593 1.1 christos && (name[6] == 0 || name[6] == '.'))
8594 1.1 christos || (CONST_STRNEQ (name, ".sbss")
8595 1.1 christos && (name[5] == 0 || name[5] == '.'))))
8596 1.1 christos {
8597 1.1 christos info->callbacks->einfo
8598 1.1 christos (_("%P: %B: the target (%s) of a %s relocation is "
8599 1.1 christos "in the wrong output section (%s)\n"),
8600 1.1 christos input_bfd,
8601 1.1 christos sym_name,
8602 1.1 christos howto->name,
8603 1.1 christos name);
8604 1.1 christos }
8605 1.1 christos }
8606 1.1 christos break;
8607 1.1 christos
8608 1.1 christos /* Relocate against _SDA2_BASE_. */
8609 1.1 christos case R_PPC_EMB_SDA2REL:
8610 1.1 christos {
8611 1.1 christos const char *name;
8612 1.1 christos struct elf_link_hash_entry *sda = htab->sdata[1].sym;
8613 1.1 christos
8614 1.1 christos if (sec == NULL
8615 1.1 christos || sec->output_section == NULL
8616 1.1 christos || !is_static_defined (sda))
8617 1.1 christos {
8618 1.1 christos unresolved_reloc = TRUE;
8619 1.1 christos break;
8620 1.1 christos }
8621 1.1 christos addend -= SYM_VAL (sda);
8622 1.1 christos
8623 1.1 christos name = bfd_get_section_name (output_bfd, sec->output_section);
8624 1.1 christos if (! (CONST_STRNEQ (name, ".sdata2")
8625 1.1 christos || CONST_STRNEQ (name, ".sbss2")))
8626 1.1 christos {
8627 1.1 christos info->callbacks->einfo
8628 1.1 christos (_("%P: %B: the target (%s) of a %s relocation is "
8629 1.1 christos "in the wrong output section (%s)\n"),
8630 1.1 christos input_bfd,
8631 1.1 christos sym_name,
8632 1.1 christos howto->name,
8633 1.1 christos name);
8634 1.1 christos }
8635 1.1 christos }
8636 1.1 christos break;
8637 1.1 christos
8638 1.1 christos case R_PPC_VLE_LO16A:
8639 1.1 christos relocation = (relocation + addend) & 0xffff;
8640 1.1 christos ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8641 1.1 christos relocation, split16a_type);
8642 1.1 christos continue;
8643 1.1 christos
8644 1.1 christos case R_PPC_VLE_LO16D:
8645 1.1 christos relocation = (relocation + addend) & 0xffff;
8646 1.1 christos ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8647 1.1 christos relocation, split16d_type);
8648 1.1 christos continue;
8649 1.1 christos
8650 1.1 christos case R_PPC_VLE_HI16A:
8651 1.1 christos relocation = ((relocation + addend) >> 16) & 0xffff;
8652 1.1 christos ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8653 1.1 christos relocation, split16a_type);
8654 1.1 christos continue;
8655 1.1 christos
8656 1.1 christos case R_PPC_VLE_HI16D:
8657 1.1 christos relocation = ((relocation + addend) >> 16) & 0xffff;
8658 1.1 christos ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8659 1.1 christos relocation, split16d_type);
8660 1.1 christos continue;
8661 1.1 christos
8662 1.1 christos case R_PPC_VLE_HA16A:
8663 1.1 christos {
8664 1.1 christos bfd_vma value = relocation + addend;
8665 1.1 christos value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8666 1.1 christos ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8667 1.1 christos value, split16a_type);
8668 1.1 christos }
8669 1.1 christos continue;
8670 1.1 christos
8671 1.1 christos case R_PPC_VLE_HA16D:
8672 1.1 christos {
8673 1.1 christos bfd_vma value = relocation + addend;
8674 1.1 christos value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8675 1.1 christos ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8676 1.1 christos value, split16d_type);
8677 1.1 christos }
8678 1.1 christos continue;
8679 1.1 christos
8680 1.1 christos /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
8681 1.1 christos case R_PPC_EMB_SDA21:
8682 1.1 christos case R_PPC_VLE_SDA21:
8683 1.1 christos case R_PPC_EMB_RELSDA:
8684 1.1 christos case R_PPC_VLE_SDA21_LO:
8685 1.1 christos {
8686 1.1 christos const char *name;
8687 1.1 christos int reg;
8688 1.1 christos struct elf_link_hash_entry *sda = NULL;
8689 1.1 christos
8690 1.1 christos if (sec == NULL || sec->output_section == NULL)
8691 1.1 christos {
8692 1.1 christos unresolved_reloc = TRUE;
8693 1.1 christos break;
8694 1.1 christos }
8695 1.1 christos
8696 1.1 christos name = bfd_get_section_name (output_bfd, sec->output_section);
8697 1.1 christos if (((CONST_STRNEQ (name, ".sdata")
8698 1.1 christos && (name[6] == 0 || name[6] == '.'))
8699 1.1 christos || (CONST_STRNEQ (name, ".sbss")
8700 1.1 christos && (name[5] == 0 || name[5] == '.'))))
8701 1.1 christos {
8702 1.1 christos reg = 13;
8703 1.1 christos sda = htab->sdata[0].sym;
8704 1.1 christos }
8705 1.1 christos else if (CONST_STRNEQ (name, ".sdata2")
8706 1.1 christos || CONST_STRNEQ (name, ".sbss2"))
8707 1.1 christos {
8708 1.1 christos reg = 2;
8709 1.1 christos sda = htab->sdata[1].sym;
8710 1.1 christos }
8711 1.1 christos else if (strcmp (name, ".PPC.EMB.sdata0") == 0
8712 1.1 christos || strcmp (name, ".PPC.EMB.sbss0") == 0)
8713 1.1 christos {
8714 1.1 christos reg = 0;
8715 1.1 christos }
8716 1.1 christos else
8717 1.1 christos {
8718 1.1 christos info->callbacks->einfo
8719 1.1 christos (_("%P: %B: the target (%s) of a %s relocation is "
8720 1.1 christos "in the wrong output section (%s)\n"),
8721 1.1 christos input_bfd,
8722 1.1 christos sym_name,
8723 1.1 christos howto->name,
8724 1.1 christos name);
8725 1.1 christos
8726 1.1 christos bfd_set_error (bfd_error_bad_value);
8727 1.1 christos ret = FALSE;
8728 1.1 christos continue;
8729 1.1 christos }
8730 1.1 christos
8731 1.1 christos if (sda != NULL)
8732 1.1 christos {
8733 1.1 christos if (!is_static_defined (sda))
8734 1.1 christos {
8735 1.1 christos unresolved_reloc = TRUE;
8736 1.1 christos break;
8737 1.1 christos }
8738 1.1 christos addend -= SYM_VAL (sda);
8739 1.1 christos }
8740 1.1 christos
8741 1.1 christos if (reg == 0
8742 1.1 christos && (r_type == R_PPC_VLE_SDA21
8743 1.1 christos || r_type == R_PPC_VLE_SDA21_LO))
8744 1.1 christos {
8745 1.1 christos /* Use the split20 format. */
8746 1.1 christos bfd_vma insn, bits12to15, bits21to31;
8747 1.1 christos bfd_vma value = (relocation + rel->r_offset) & 0xffff;
8748 1.1 christos /* Propagate sign bit, if necessary. */
8749 1.1 christos insn = (value & 0x8000) ? 0x70107800 : 0x70000000;
8750 1.1 christos bits12to15 = value & 0x700;
8751 1.1 christos bits21to31 = value & 0x7ff;
8752 1.1 christos insn |= bits12to15;
8753 1.1 christos insn |= bits21to31;
8754 1.1 christos bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8755 1.1 christos continue;
8756 1.1 christos }
8757 1.1 christos else if (r_type == R_PPC_EMB_SDA21
8758 1.1 christos || r_type == R_PPC_VLE_SDA21
8759 1.1 christos || r_type == R_PPC_VLE_SDA21_LO)
8760 1.1 christos {
8761 1.1 christos bfd_vma insn; /* Fill in register field. */
8762 1.1 christos
8763 1.1 christos insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
8764 1.1 christos insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
8765 1.1 christos bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8766 1.1 christos }
8767 1.1 christos }
8768 1.1 christos break;
8769 1.1 christos
8770 1.1 christos case R_PPC_VLE_SDAREL_LO16A:
8771 1.1 christos case R_PPC_VLE_SDAREL_LO16D:
8772 1.1 christos case R_PPC_VLE_SDAREL_HI16A:
8773 1.1 christos case R_PPC_VLE_SDAREL_HI16D:
8774 1.1 christos case R_PPC_VLE_SDAREL_HA16A:
8775 1.1 christos case R_PPC_VLE_SDAREL_HA16D:
8776 1.1 christos {
8777 1.1 christos bfd_vma value;
8778 1.1 christos const char *name;
8779 1.1 christos //int reg;
8780 1.1 christos struct elf_link_hash_entry *sda = NULL;
8781 1.1 christos
8782 1.1 christos if (sec == NULL || sec->output_section == NULL)
8783 1.1 christos {
8784 1.1 christos unresolved_reloc = TRUE;
8785 1.1 christos break;
8786 1.1 christos }
8787 1.1 christos
8788 1.1 christos name = bfd_get_section_name (output_bfd, sec->output_section);
8789 1.1 christos if (((CONST_STRNEQ (name, ".sdata")
8790 1.1 christos && (name[6] == 0 || name[6] == '.'))
8791 1.1 christos || (CONST_STRNEQ (name, ".sbss")
8792 1.1 christos && (name[5] == 0 || name[5] == '.'))))
8793 1.1 christos {
8794 1.1 christos //reg = 13;
8795 1.1 christos sda = htab->sdata[0].sym;
8796 1.1 christos }
8797 1.1 christos else if (CONST_STRNEQ (name, ".sdata2")
8798 1.1 christos || CONST_STRNEQ (name, ".sbss2"))
8799 1.1 christos {
8800 1.1 christos //reg = 2;
8801 1.1 christos sda = htab->sdata[1].sym;
8802 1.1 christos }
8803 1.1 christos else
8804 1.1 christos {
8805 1.1 christos (*_bfd_error_handler)
8806 1.1 christos (_("%B: the target (%s) of a %s relocation is "
8807 1.1 christos "in the wrong output section (%s)"),
8808 1.1 christos input_bfd,
8809 1.1 christos sym_name,
8810 1.1 christos howto->name,
8811 1.1 christos name);
8812 1.1 christos
8813 1.1 christos bfd_set_error (bfd_error_bad_value);
8814 1.1 christos ret = FALSE;
8815 1.1 christos continue;
8816 1.1 christos }
8817 1.1 christos
8818 1.1 christos if (sda != NULL)
8819 1.1 christos {
8820 1.1 christos if (!is_static_defined (sda))
8821 1.1 christos {
8822 1.1 christos unresolved_reloc = TRUE;
8823 1.1 christos break;
8824 1.1 christos }
8825 1.1 christos }
8826 1.1 christos
8827 1.1 christos value = sda->root.u.def.section->output_section->vma
8828 1.1 christos + sda->root.u.def.section->output_offset;
8829 1.1 christos
8830 1.1 christos if (r_type == R_PPC_VLE_SDAREL_LO16A)
8831 1.1 christos {
8832 1.1 christos value = (value + addend) & 0xffff;
8833 1.1 christos ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8834 1.1 christos value, split16a_type);
8835 1.1 christos }
8836 1.1 christos else if (r_type == R_PPC_VLE_SDAREL_LO16D)
8837 1.1 christos {
8838 1.1 christos value = (value + addend) & 0xffff;
8839 1.1 christos ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8840 1.1 christos value, split16d_type);
8841 1.1 christos }
8842 1.1 christos else if (r_type == R_PPC_VLE_SDAREL_HI16A)
8843 1.1 christos {
8844 1.1 christos value = ((value + addend) >> 16) & 0xffff;
8845 1.1 christos ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8846 1.1 christos value, split16a_type);
8847 1.1 christos }
8848 1.1 christos else if (r_type == R_PPC_VLE_SDAREL_HI16D)
8849 1.1 christos {
8850 1.1 christos value = ((value + addend) >> 16) & 0xffff;
8851 1.1 christos ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8852 1.1 christos value, split16d_type);
8853 1.1 christos }
8854 1.1 christos else if (r_type == R_PPC_VLE_SDAREL_HA16A)
8855 1.1 christos {
8856 1.1 christos value += addend;
8857 1.1 christos value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8858 1.1 christos ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8859 1.1 christos value, split16a_type);
8860 1.1 christos }
8861 1.1 christos else if (r_type == R_PPC_VLE_SDAREL_HA16D)
8862 1.1 christos {
8863 1.1 christos value += addend;
8864 1.1 christos value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8865 1.1 christos ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8866 1.1 christos value, split16d_type);
8867 1.1 christos }
8868 1.1 christos }
8869 1.1 christos continue;
8870 1.1 christos
8871 1.1 christos /* Relocate against the beginning of the section. */
8872 1.1 christos case R_PPC_SECTOFF:
8873 1.1 christos case R_PPC_SECTOFF_LO:
8874 1.1 christos case R_PPC_SECTOFF_HI:
8875 1.1 christos case R_PPC_SECTOFF_HA:
8876 1.1 christos if (sec == NULL || sec->output_section == NULL)
8877 1.1 christos {
8878 1.1 christos unresolved_reloc = TRUE;
8879 1.1 christos break;
8880 1.1 christos }
8881 1.1 christos addend -= sec->output_section->vma;
8882 1.1 christos break;
8883 1.1 christos
8884 1.1 christos /* Negative relocations. */
8885 1.1 christos case R_PPC_EMB_NADDR32:
8886 1.1 christos case R_PPC_EMB_NADDR16:
8887 1.1 christos case R_PPC_EMB_NADDR16_LO:
8888 1.1 christos case R_PPC_EMB_NADDR16_HI:
8889 1.1 christos case R_PPC_EMB_NADDR16_HA:
8890 1.1 christos addend -= 2 * relocation;
8891 1.1 christos break;
8892 1.1 christos
8893 1.1 christos case R_PPC_COPY:
8894 1.1 christos case R_PPC_GLOB_DAT:
8895 1.1 christos case R_PPC_JMP_SLOT:
8896 1.1 christos case R_PPC_RELATIVE:
8897 1.1 christos case R_PPC_IRELATIVE:
8898 1.1 christos case R_PPC_PLT32:
8899 1.1 christos case R_PPC_PLTREL32:
8900 1.1 christos case R_PPC_PLT16_LO:
8901 1.1 christos case R_PPC_PLT16_HI:
8902 1.1 christos case R_PPC_PLT16_HA:
8903 1.1 christos case R_PPC_ADDR30:
8904 1.1 christos case R_PPC_EMB_RELSEC16:
8905 1.1 christos case R_PPC_EMB_RELST_LO:
8906 1.1 christos case R_PPC_EMB_RELST_HI:
8907 1.1 christos case R_PPC_EMB_RELST_HA:
8908 1.1 christos case R_PPC_EMB_BIT_FLD:
8909 1.1 christos info->callbacks->einfo
8910 1.1 christos (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
8911 1.1 christos input_bfd,
8912 1.1 christos howto->name,
8913 1.1 christos sym_name);
8914 1.1 christos
8915 1.1 christos bfd_set_error (bfd_error_invalid_operation);
8916 1.1 christos ret = FALSE;
8917 1.1 christos continue;
8918 1.1 christos }
8919 1.1 christos
8920 1.1 christos /* Do any further special processing. */
8921 1.1 christos switch (r_type)
8922 1.1 christos {
8923 1.1 christos default:
8924 1.1 christos break;
8925 1.1 christos
8926 1.1 christos case R_PPC_ADDR16_HA:
8927 1.1 christos case R_PPC_REL16_HA:
8928 1.1 christos case R_PPC_SECTOFF_HA:
8929 1.1 christos case R_PPC_TPREL16_HA:
8930 1.1 christos case R_PPC_DTPREL16_HA:
8931 1.1 christos case R_PPC_EMB_NADDR16_HA:
8932 1.1 christos case R_PPC_EMB_RELST_HA:
8933 1.1 christos /* It's just possible that this symbol is a weak symbol
8934 1.1 christos that's not actually defined anywhere. In that case,
8935 1.1 christos 'sec' would be NULL, and we should leave the symbol
8936 1.1 christos alone (it will be set to zero elsewhere in the link). */
8937 1.1 christos if (sec == NULL)
8938 1.1 christos break;
8939 1.1 christos /* Fall thru */
8940 1.1 christos
8941 1.1 christos case R_PPC_PLT16_HA:
8942 1.1 christos case R_PPC_GOT16_HA:
8943 1.1 christos case R_PPC_GOT_TLSGD16_HA:
8944 1.1 christos case R_PPC_GOT_TLSLD16_HA:
8945 1.1 christos case R_PPC_GOT_TPREL16_HA:
8946 1.1 christos case R_PPC_GOT_DTPREL16_HA:
8947 1.1 christos /* Add 0x10000 if sign bit in 0:15 is set.
8948 1.1 christos Bits 0:15 are not used. */
8949 1.1 christos addend += 0x8000;
8950 1.1 christos break;
8951 1.1 christos
8952 1.1 christos case R_PPC_ADDR16:
8953 1.1 christos case R_PPC_ADDR16_LO:
8954 1.1 christos case R_PPC_GOT16:
8955 1.1 christos case R_PPC_GOT16_LO:
8956 1.1 christos case R_PPC_SDAREL16:
8957 1.1 christos case R_PPC_SECTOFF:
8958 1.1 christos case R_PPC_SECTOFF_LO:
8959 1.1 christos case R_PPC_DTPREL16:
8960 1.1 christos case R_PPC_DTPREL16_LO:
8961 1.1 christos case R_PPC_TPREL16:
8962 1.1 christos case R_PPC_TPREL16_LO:
8963 1.1 christos case R_PPC_GOT_TLSGD16:
8964 1.1 christos case R_PPC_GOT_TLSGD16_LO:
8965 1.1 christos case R_PPC_GOT_TLSLD16:
8966 1.1 christos case R_PPC_GOT_TLSLD16_LO:
8967 1.1 christos case R_PPC_GOT_DTPREL16:
8968 1.1 christos case R_PPC_GOT_DTPREL16_LO:
8969 1.1 christos case R_PPC_GOT_TPREL16:
8970 1.1 christos case R_PPC_GOT_TPREL16_LO:
8971 1.1 christos {
8972 1.1 christos /* The 32-bit ABI lacks proper relocations to deal with
8973 1.1 christos certain 64-bit instructions. Prevent damage to bits
8974 1.1 christos that make up part of the insn opcode. */
8975 1.1 christos unsigned int insn, mask, lobit;
8976 1.1 christos
8977 1.1 christos insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
8978 1.1 christos mask = 0;
8979 1.1 christos if (is_insn_ds_form (insn))
8980 1.1 christos mask = 3;
8981 1.1 christos else if (is_insn_dq_form (insn))
8982 1.1 christos mask = 15;
8983 1.1 christos else
8984 1.1 christos break;
8985 1.1 christos lobit = mask & (relocation + addend);
8986 1.1 christos if (lobit != 0)
8987 1.1 christos {
8988 1.1 christos addend -= lobit;
8989 1.1 christos info->callbacks->einfo
8990 1.1 christos (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
8991 1.1 christos input_bfd, input_section, rel->r_offset,
8992 1.1 christos howto->name, sym_name, mask + 1);
8993 1.1 christos bfd_set_error (bfd_error_bad_value);
8994 1.1 christos ret = FALSE;
8995 1.1 christos }
8996 1.1 christos addend += insn & mask;
8997 1.1 christos }
8998 1.1 christos break;
8999 1.1 christos }
9000 1.1 christos
9001 1.1 christos #ifdef DEBUG
9002 1.1 christos fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9003 1.1 christos "offset = %ld, addend = %ld\n",
9004 1.1 christos howto->name,
9005 1.1 christos (int) r_type,
9006 1.1 christos sym_name,
9007 1.1 christos r_symndx,
9008 1.1 christos (long) rel->r_offset,
9009 1.1 christos (long) addend);
9010 1.1 christos #endif
9011 1.1 christos
9012 1.1 christos if (unresolved_reloc
9013 1.1 christos && !((input_section->flags & SEC_DEBUGGING) != 0
9014 1.1 christos && h->def_dynamic)
9015 1.1 christos && _bfd_elf_section_offset (output_bfd, info, input_section,
9016 1.1 christos rel->r_offset) != (bfd_vma) -1)
9017 1.1 christos {
9018 1.1 christos info->callbacks->einfo
9019 1.1 christos (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
9020 1.1 christos input_bfd, input_section, rel->r_offset,
9021 1.1 christos howto->name,
9022 1.1 christos sym_name);
9023 1.1 christos ret = FALSE;
9024 1.1 christos }
9025 1.1 christos
9026 1.1 christos r = _bfd_final_link_relocate (howto,
9027 1.1 christos input_bfd,
9028 1.1 christos input_section,
9029 1.1 christos contents,
9030 1.1 christos rel->r_offset,
9031 1.1 christos relocation,
9032 1.1 christos addend);
9033 1.1 christos
9034 1.1 christos if (r != bfd_reloc_ok)
9035 1.1 christos {
9036 1.1 christos if (r == bfd_reloc_overflow)
9037 1.1 christos {
9038 1.1 christos if (warned)
9039 1.1 christos continue;
9040 1.1 christos if (h != NULL
9041 1.1 christos && h->root.type == bfd_link_hash_undefweak
9042 1.1 christos && howto->pc_relative)
9043 1.1 christos {
9044 1.1 christos /* Assume this is a call protected by other code that
9045 1.1 christos detect the symbol is undefined. If this is the case,
9046 1.1 christos we can safely ignore the overflow. If not, the
9047 1.1 christos program is hosed anyway, and a little warning isn't
9048 1.1 christos going to help. */
9049 1.1 christos
9050 1.1 christos continue;
9051 1.1 christos }
9052 1.1 christos
9053 1.1 christos if (! (*info->callbacks->reloc_overflow) (info,
9054 1.1 christos (h ? &h->root : NULL),
9055 1.1 christos sym_name,
9056 1.1 christos howto->name,
9057 1.1 christos rel->r_addend,
9058 1.1 christos input_bfd,
9059 1.1 christos input_section,
9060 1.1 christos rel->r_offset))
9061 1.1 christos return FALSE;
9062 1.1 christos }
9063 1.1 christos else
9064 1.1 christos {
9065 1.1 christos info->callbacks->einfo
9066 1.1 christos (_("%P: %H: %s reloc against `%s': error %d\n"),
9067 1.1 christos input_bfd, input_section, rel->r_offset,
9068 1.1 christos howto->name, sym_name, (int) r);
9069 1.1 christos ret = FALSE;
9070 1.1 christos }
9071 1.1 christos }
9072 1.1 christos }
9073 1.1 christos
9074 1.1 christos #ifdef DEBUG
9075 1.1 christos fprintf (stderr, "\n");
9076 1.1 christos #endif
9077 1.1 christos
9078 1.1 christos return ret;
9079 1.1 christos }
9080 1.1 christos
9081 1.1 christos /* Finish up dynamic symbol handling. We set the contents of various
9083 1.1 christos dynamic sections here. */
9084 1.1 christos
9085 1.1 christos static bfd_boolean
9086 1.1 christos ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9087 1.1 christos struct bfd_link_info *info,
9088 1.1 christos struct elf_link_hash_entry *h,
9089 1.1 christos Elf_Internal_Sym *sym)
9090 1.1 christos {
9091 1.1 christos struct ppc_elf_link_hash_table *htab;
9092 1.1 christos struct plt_entry *ent;
9093 1.1 christos bfd_boolean doneone;
9094 1.1 christos
9095 1.1 christos #ifdef DEBUG
9096 1.1 christos fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9097 1.1 christos h->root.root.string);
9098 1.1 christos #endif
9099 1.1 christos
9100 1.1 christos htab = ppc_elf_hash_table (info);
9101 1.1 christos BFD_ASSERT (htab->elf.dynobj != NULL);
9102 1.1 christos
9103 1.1 christos doneone = FALSE;
9104 1.1 christos for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9105 1.1 christos if (ent->plt.offset != (bfd_vma) -1)
9106 1.1 christos {
9107 1.1 christos if (!doneone)
9108 1.1 christos {
9109 1.1 christos Elf_Internal_Rela rela;
9110 1.1 christos bfd_byte *loc;
9111 1.1 christos bfd_vma reloc_index;
9112 1.1 christos
9113 1.1 christos if (htab->plt_type == PLT_NEW
9114 1.1 christos || !htab->elf.dynamic_sections_created
9115 1.1 christos || h->dynindx == -1)
9116 1.1 christos reloc_index = ent->plt.offset / 4;
9117 1.1 christos else
9118 1.1 christos {
9119 1.1 christos reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
9120 1.1 christos / htab->plt_slot_size);
9121 1.1 christos if (reloc_index > PLT_NUM_SINGLE_ENTRIES
9122 1.1 christos && htab->plt_type == PLT_OLD)
9123 1.1 christos reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
9124 1.1 christos }
9125 1.1 christos
9126 1.1 christos /* This symbol has an entry in the procedure linkage table.
9127 1.1 christos Set it up. */
9128 1.1 christos if (htab->plt_type == PLT_VXWORKS
9129 1.1 christos && htab->elf.dynamic_sections_created
9130 1.1 christos && h->dynindx != -1)
9131 1.1 christos {
9132 1.1 christos bfd_vma got_offset;
9133 1.1 christos const bfd_vma *plt_entry;
9134 1.1 christos
9135 1.1 christos /* The first three entries in .got.plt are reserved. */
9136 1.1 christos got_offset = (reloc_index + 3) * 4;
9137 1.1 christos
9138 1.1 christos /* Use the right PLT. */
9139 1.1 christos plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
9140 1.1 christos : ppc_elf_vxworks_plt_entry;
9141 1.1 christos
9142 1.1 christos /* Fill in the .plt on VxWorks. */
9143 1.1 christos if (info->shared)
9144 1.1 christos {
9145 1.1 christos bfd_put_32 (output_bfd,
9146 1.1 christos plt_entry[0] | PPC_HA (got_offset),
9147 1.1 christos htab->plt->contents + ent->plt.offset + 0);
9148 1.1 christos bfd_put_32 (output_bfd,
9149 1.1 christos plt_entry[1] | PPC_LO (got_offset),
9150 1.1 christos htab->plt->contents + ent->plt.offset + 4);
9151 1.1 christos }
9152 1.1 christos else
9153 1.1 christos {
9154 1.1 christos bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
9155 1.1 christos
9156 1.1 christos bfd_put_32 (output_bfd,
9157 1.1 christos plt_entry[0] | PPC_HA (got_loc),
9158 1.1 christos htab->plt->contents + ent->plt.offset + 0);
9159 1.1 christos bfd_put_32 (output_bfd,
9160 1.1 christos plt_entry[1] | PPC_LO (got_loc),
9161 1.1 christos htab->plt->contents + ent->plt.offset + 4);
9162 1.1 christos }
9163 1.1 christos
9164 1.1 christos bfd_put_32 (output_bfd, plt_entry[2],
9165 1.1 christos htab->plt->contents + ent->plt.offset + 8);
9166 1.1 christos bfd_put_32 (output_bfd, plt_entry[3],
9167 1.1 christos htab->plt->contents + ent->plt.offset + 12);
9168 1.1 christos
9169 1.1 christos /* This instruction is an immediate load. The value loaded is
9170 1.1 christos the byte offset of the R_PPC_JMP_SLOT relocation from the
9171 1.1 christos start of the .rela.plt section. The value is stored in the
9172 1.1 christos low-order 16 bits of the load instruction. */
9173 1.1 christos /* NOTE: It appears that this is now an index rather than a
9174 1.1 christos prescaled offset. */
9175 1.1 christos bfd_put_32 (output_bfd,
9176 1.1 christos plt_entry[4] | reloc_index,
9177 1.1 christos htab->plt->contents + ent->plt.offset + 16);
9178 1.1 christos /* This instruction is a PC-relative branch whose target is
9179 1.1 christos the start of the PLT section. The address of this branch
9180 1.1 christos instruction is 20 bytes beyond the start of this PLT entry.
9181 1.1 christos The address is encoded in bits 6-29, inclusive. The value
9182 1.1 christos stored is right-shifted by two bits, permitting a 26-bit
9183 1.1 christos offset. */
9184 1.1 christos bfd_put_32 (output_bfd,
9185 1.1 christos (plt_entry[5]
9186 1.1 christos | (-(ent->plt.offset + 20) & 0x03fffffc)),
9187 1.1 christos htab->plt->contents + ent->plt.offset + 20);
9188 1.1 christos bfd_put_32 (output_bfd, plt_entry[6],
9189 1.1 christos htab->plt->contents + ent->plt.offset + 24);
9190 1.1 christos bfd_put_32 (output_bfd, plt_entry[7],
9191 1.1 christos htab->plt->contents + ent->plt.offset + 28);
9192 1.1 christos
9193 1.1 christos /* Fill in the GOT entry corresponding to this PLT slot with
9194 1.1 christos the address immediately after the "bctr" instruction
9195 1.1 christos in this PLT entry. */
9196 1.1 christos bfd_put_32 (output_bfd, (htab->plt->output_section->vma
9197 1.1 christos + htab->plt->output_offset
9198 1.1 christos + ent->plt.offset + 16),
9199 1.1 christos htab->sgotplt->contents + got_offset);
9200 1.1 christos
9201 1.1 christos if (!info->shared)
9202 1.1 christos {
9203 1.1 christos /* Fill in a couple of entries in .rela.plt.unloaded. */
9204 1.1 christos loc = htab->srelplt2->contents
9205 1.1 christos + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
9206 1.1 christos * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
9207 1.1 christos * sizeof (Elf32_External_Rela));
9208 1.1 christos
9209 1.1 christos /* Provide the @ha relocation for the first instruction. */
9210 1.1 christos rela.r_offset = (htab->plt->output_section->vma
9211 1.1 christos + htab->plt->output_offset
9212 1.1 christos + ent->plt.offset + 2);
9213 1.1 christos rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9214 1.1 christos R_PPC_ADDR16_HA);
9215 1.1 christos rela.r_addend = got_offset;
9216 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9217 1.1 christos loc += sizeof (Elf32_External_Rela);
9218 1.1 christos
9219 1.1 christos /* Provide the @l relocation for the second instruction. */
9220 1.1 christos rela.r_offset = (htab->plt->output_section->vma
9221 1.1 christos + htab->plt->output_offset
9222 1.1 christos + ent->plt.offset + 6);
9223 1.1 christos rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9224 1.1 christos R_PPC_ADDR16_LO);
9225 1.1 christos rela.r_addend = got_offset;
9226 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9227 1.1 christos loc += sizeof (Elf32_External_Rela);
9228 1.1 christos
9229 1.1 christos /* Provide a relocation for the GOT entry corresponding to this
9230 1.1 christos PLT slot. Point it at the middle of the .plt entry. */
9231 1.1 christos rela.r_offset = (htab->sgotplt->output_section->vma
9232 1.1 christos + htab->sgotplt->output_offset
9233 1.1 christos + got_offset);
9234 1.1 christos rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9235 1.1 christos R_PPC_ADDR32);
9236 1.1 christos rela.r_addend = ent->plt.offset + 16;
9237 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9238 1.1 christos }
9239 1.1 christos
9240 1.1 christos /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
9241 1.1 christos In particular, the offset for the relocation is not the
9242 1.1 christos address of the PLT entry for this function, as specified
9243 1.1 christos by the ABI. Instead, the offset is set to the address of
9244 1.1 christos the GOT slot for this function. See EABI 4.4.4.1. */
9245 1.1 christos rela.r_offset = (htab->sgotplt->output_section->vma
9246 1.1 christos + htab->sgotplt->output_offset
9247 1.1 christos + got_offset);
9248 1.1 christos
9249 1.1 christos }
9250 1.1 christos else
9251 1.1 christos {
9252 1.1 christos asection *splt = htab->plt;
9253 1.1 christos if (!htab->elf.dynamic_sections_created
9254 1.1 christos || h->dynindx == -1)
9255 1.1 christos splt = htab->iplt;
9256 1.1 christos
9257 1.1 christos rela.r_offset = (splt->output_section->vma
9258 1.1 christos + splt->output_offset
9259 1.1 christos + ent->plt.offset);
9260 1.1 christos if (htab->plt_type == PLT_OLD
9261 1.1 christos || !htab->elf.dynamic_sections_created
9262 1.1 christos || h->dynindx == -1)
9263 1.1 christos {
9264 1.1 christos /* We don't need to fill in the .plt. The ppc dynamic
9265 1.1 christos linker will fill it in. */
9266 1.1 christos }
9267 1.1 christos else
9268 1.1 christos {
9269 1.1 christos bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
9270 1.1 christos + htab->glink->output_section->vma
9271 1.1 christos + htab->glink->output_offset);
9272 1.1 christos bfd_put_32 (output_bfd, val,
9273 1.1 christos splt->contents + ent->plt.offset);
9274 1.1 christos }
9275 1.1 christos }
9276 1.1 christos
9277 1.1 christos /* Fill in the entry in the .rela.plt section. */
9278 1.1 christos rela.r_addend = 0;
9279 1.1 christos if (!htab->elf.dynamic_sections_created
9280 1.1 christos || h->dynindx == -1)
9281 1.1 christos {
9282 1.1 christos BFD_ASSERT (h->type == STT_GNU_IFUNC
9283 1.1 christos && h->def_regular
9284 1.1 christos && (h->root.type == bfd_link_hash_defined
9285 1.1 christos || h->root.type == bfd_link_hash_defweak));
9286 1.1 christos rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
9287 1.1 christos rela.r_addend = SYM_VAL (h);
9288 1.1 christos }
9289 1.1 christos else
9290 1.1 christos rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
9291 1.1 christos
9292 1.1 christos if (!htab->elf.dynamic_sections_created
9293 1.1 christos || h->dynindx == -1)
9294 1.1 christos loc = (htab->reliplt->contents
9295 1.1 christos + (htab->reliplt->reloc_count++
9296 1.1 christos * sizeof (Elf32_External_Rela)));
9297 1.1 christos else
9298 1.1 christos loc = (htab->relplt->contents
9299 1.1 christos + reloc_index * sizeof (Elf32_External_Rela));
9300 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9301 1.1 christos
9302 1.1 christos if (!h->def_regular)
9303 1.1 christos {
9304 1.1 christos /* Mark the symbol as undefined, rather than as
9305 1.1 christos defined in the .plt section. Leave the value if
9306 1.1 christos there were any relocations where pointer equality
9307 1.1 christos matters (this is a clue for the dynamic linker, to
9308 1.1 christos make function pointer comparisons work between an
9309 1.1 christos application and shared library), otherwise set it
9310 1.1 christos to zero. */
9311 1.1 christos sym->st_shndx = SHN_UNDEF;
9312 1.1 christos if (!h->pointer_equality_needed)
9313 1.1 christos sym->st_value = 0;
9314 1.1 christos else if (!h->ref_regular_nonweak)
9315 1.1 christos {
9316 1.1 christos /* This breaks function pointer comparisons, but
9317 1.1 christos that is better than breaking tests for a NULL
9318 1.1 christos function pointer. */
9319 1.1 christos sym->st_value = 0;
9320 1.1 christos }
9321 1.1 christos }
9322 1.1 christos else if (h->type == STT_GNU_IFUNC
9323 1.1 christos && !info->shared)
9324 1.1 christos {
9325 1.1 christos /* Set the value of ifunc symbols in a non-pie
9326 1.1 christos executable to the glink entry. This is to avoid
9327 1.1 christos text relocations. We can't do this for ifunc in
9328 1.1 christos allocate_dynrelocs, as we do for normal dynamic
9329 1.1 christos function symbols with plt entries, because we need
9330 1.1 christos to keep the original value around for the ifunc
9331 1.1 christos relocation. */
9332 1.1 christos sym->st_shndx = (_bfd_elf_section_from_bfd_section
9333 1.1 christos (output_bfd, htab->glink->output_section));
9334 1.1 christos sym->st_value = (ent->glink_offset
9335 1.1 christos + htab->glink->output_offset
9336 1.1 christos + htab->glink->output_section->vma);
9337 1.1 christos }
9338 1.1 christos doneone = TRUE;
9339 1.1 christos }
9340 1.1 christos
9341 1.1 christos if (htab->plt_type == PLT_NEW
9342 1.1 christos || !htab->elf.dynamic_sections_created
9343 1.1 christos || h->dynindx == -1)
9344 1.1 christos {
9345 1.1 christos unsigned char *p;
9346 1.1 christos asection *splt = htab->plt;
9347 1.1 christos if (!htab->elf.dynamic_sections_created
9348 1.1 christos || h->dynindx == -1)
9349 1.1 christos splt = htab->iplt;
9350 1.1 christos
9351 1.1 christos p = (unsigned char *) htab->glink->contents + ent->glink_offset;
9352 1.1 christos
9353 1.1 christos if (h == htab->tls_get_addr && !htab->no_tls_get_addr_opt)
9354 1.1 christos {
9355 1.1 christos bfd_put_32 (output_bfd, LWZ_11_3, p);
9356 1.1 christos p += 4;
9357 1.1 christos bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
9358 1.1 christos p += 4;
9359 1.1 christos bfd_put_32 (output_bfd, MR_0_3, p);
9360 1.1 christos p += 4;
9361 1.1 christos bfd_put_32 (output_bfd, CMPWI_11_0, p);
9362 1.1 christos p += 4;
9363 1.1 christos bfd_put_32 (output_bfd, ADD_3_12_2, p);
9364 1.1 christos p += 4;
9365 1.1 christos bfd_put_32 (output_bfd, BEQLR, p);
9366 1.1 christos p += 4;
9367 1.1 christos bfd_put_32 (output_bfd, MR_3_0, p);
9368 1.1 christos p += 4;
9369 1.1 christos bfd_put_32 (output_bfd, NOP, p);
9370 1.1 christos p += 4;
9371 1.1 christos }
9372 1.1 christos
9373 1.1 christos write_glink_stub (ent, splt, p, info);
9374 1.1 christos
9375 1.1 christos if (!info->shared)
9376 1.1 christos /* We only need one non-PIC glink stub. */
9377 1.1 christos break;
9378 1.1 christos }
9379 1.1 christos else
9380 1.1 christos break;
9381 1.1 christos }
9382 1.1 christos
9383 1.1 christos if (h->needs_copy)
9384 1.1 christos {
9385 1.1 christos asection *s;
9386 1.1 christos Elf_Internal_Rela rela;
9387 1.1 christos bfd_byte *loc;
9388 1.1 christos
9389 1.1 christos /* This symbols needs a copy reloc. Set it up. */
9390 1.1 christos
9391 1.1 christos #ifdef DEBUG
9392 1.1 christos fprintf (stderr, ", copy");
9393 1.1 christos #endif
9394 1.1 christos
9395 1.1 christos BFD_ASSERT (h->dynindx != -1);
9396 1.1 christos
9397 1.1 christos if (ppc_elf_hash_entry (h)->has_sda_refs)
9398 1.1 christos s = htab->relsbss;
9399 1.1 christos else
9400 1.1 christos s = htab->relbss;
9401 1.1 christos BFD_ASSERT (s != NULL);
9402 1.1 christos
9403 1.1 christos rela.r_offset = SYM_VAL (h);
9404 1.1 christos rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
9405 1.1 christos rela.r_addend = 0;
9406 1.1 christos loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
9407 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9408 1.1 christos }
9409 1.1 christos
9410 1.1 christos #ifdef DEBUG
9411 1.1 christos fprintf (stderr, "\n");
9412 1.1 christos #endif
9413 1.1 christos
9414 1.1 christos return TRUE;
9415 1.1 christos }
9416 1.1 christos
9417 1.1 christos static enum elf_reloc_type_class
9419 1.1 christos ppc_elf_reloc_type_class (const struct bfd_link_info *info,
9420 1.1 christos const asection *rel_sec,
9421 1.1 christos const Elf_Internal_Rela *rela)
9422 1.1 christos {
9423 1.1 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
9424 1.1 christos
9425 1.1 christos if (rel_sec == htab->reliplt)
9426 1.1 christos return reloc_class_ifunc;
9427 1.1 christos
9428 1.1 christos switch (ELF32_R_TYPE (rela->r_info))
9429 1.1 christos {
9430 1.1 christos case R_PPC_RELATIVE:
9431 1.1 christos return reloc_class_relative;
9432 1.1 christos case R_PPC_JMP_SLOT:
9433 1.1 christos return reloc_class_plt;
9434 1.1 christos case R_PPC_COPY:
9435 1.1 christos return reloc_class_copy;
9436 1.1 christos default:
9437 1.1 christos return reloc_class_normal;
9438 1.1 christos }
9439 1.1 christos }
9440 1.1 christos
9441 1.1 christos /* Finish up the dynamic sections. */
9443 1.1 christos
9444 1.1 christos static bfd_boolean
9445 1.1 christos ppc_elf_finish_dynamic_sections (bfd *output_bfd,
9446 1.1 christos struct bfd_link_info *info)
9447 1.1 christos {
9448 1.1 christos asection *sdyn;
9449 1.1 christos asection *splt;
9450 1.1 christos struct ppc_elf_link_hash_table *htab;
9451 1.1 christos bfd_vma got;
9452 1.1 christos bfd *dynobj;
9453 1.1 christos bfd_boolean ret = TRUE;
9454 1.1 christos
9455 1.1 christos #ifdef DEBUG
9456 1.1 christos fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
9457 1.1 christos #endif
9458 1.1 christos
9459 1.1 christos htab = ppc_elf_hash_table (info);
9460 1.1 christos dynobj = elf_hash_table (info)->dynobj;
9461 1.1 christos sdyn = bfd_get_linker_section (dynobj, ".dynamic");
9462 1.1 christos if (htab->is_vxworks)
9463 1.1 christos splt = bfd_get_linker_section (dynobj, ".plt");
9464 1.1 christos else
9465 1.1 christos splt = NULL;
9466 1.1 christos
9467 1.1 christos got = 0;
9468 1.1 christos if (htab->elf.hgot != NULL)
9469 1.1 christos got = SYM_VAL (htab->elf.hgot);
9470 1.1 christos
9471 1.1 christos if (htab->elf.dynamic_sections_created)
9472 1.1 christos {
9473 1.1 christos Elf32_External_Dyn *dyncon, *dynconend;
9474 1.1 christos
9475 1.1 christos BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
9476 1.1 christos
9477 1.1 christos dyncon = (Elf32_External_Dyn *) sdyn->contents;
9478 1.1 christos dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
9479 1.1 christos for (; dyncon < dynconend; dyncon++)
9480 1.1 christos {
9481 1.1 christos Elf_Internal_Dyn dyn;
9482 1.1 christos asection *s;
9483 1.1 christos
9484 1.1 christos bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
9485 1.1 christos
9486 1.1 christos switch (dyn.d_tag)
9487 1.1 christos {
9488 1.1 christos case DT_PLTGOT:
9489 1.1 christos if (htab->is_vxworks)
9490 1.1 christos s = htab->sgotplt;
9491 1.1 christos else
9492 1.1 christos s = htab->plt;
9493 1.1 christos dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9494 1.1 christos break;
9495 1.1 christos
9496 1.1 christos case DT_PLTRELSZ:
9497 1.1 christos dyn.d_un.d_val = htab->relplt->size;
9498 1.1 christos break;
9499 1.1 christos
9500 1.1 christos case DT_JMPREL:
9501 1.1 christos s = htab->relplt;
9502 1.1 christos dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9503 1.1 christos break;
9504 1.1 christos
9505 1.1 christos case DT_PPC_GOT:
9506 1.1 christos dyn.d_un.d_ptr = got;
9507 1.1 christos break;
9508 1.1 christos
9509 1.1 christos case DT_RELASZ:
9510 1.1 christos if (htab->is_vxworks)
9511 1.1 christos {
9512 1.1 christos if (htab->relplt)
9513 1.1 christos dyn.d_un.d_ptr -= htab->relplt->size;
9514 1.1 christos break;
9515 1.1 christos }
9516 1.1 christos continue;
9517 1.1 christos
9518 1.1 christos default:
9519 1.1 christos if (htab->is_vxworks
9520 1.1 christos && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
9521 1.1 christos break;
9522 1.1 christos continue;
9523 1.1 christos }
9524 1.1 christos
9525 1.1 christos bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9526 1.1 christos }
9527 1.1 christos }
9528 1.1 christos
9529 1.1 christos if (htab->got != NULL)
9530 1.1 christos {
9531 1.1 christos if (htab->elf.hgot->root.u.def.section == htab->got
9532 1.1 christos || htab->elf.hgot->root.u.def.section == htab->sgotplt)
9533 1.1 christos {
9534 1.1 christos unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
9535 1.1 christos
9536 1.1 christos p += htab->elf.hgot->root.u.def.value;
9537 1.1 christos if (htab->plt_type == PLT_OLD)
9538 1.1 christos {
9539 1.1 christos /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
9540 1.1 christos so that a function can easily find the address of
9541 1.1 christos _GLOBAL_OFFSET_TABLE_. */
9542 1.1 christos BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
9543 1.1 christos < htab->elf.hgot->root.u.def.section->size);
9544 1.1 christos bfd_put_32 (output_bfd, 0x4e800021, p - 4);
9545 1.1 christos }
9546 1.1 christos
9547 1.1 christos if (sdyn != NULL)
9548 1.1 christos {
9549 1.1 christos bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
9550 1.1 christos BFD_ASSERT (htab->elf.hgot->root.u.def.value
9551 1.1 christos < htab->elf.hgot->root.u.def.section->size);
9552 1.1 christos bfd_put_32 (output_bfd, val, p);
9553 1.1 christos }
9554 1.1 christos }
9555 1.1 christos else
9556 1.1 christos {
9557 1.1 christos info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
9558 1.1 christos htab->elf.hgot->root.root.string,
9559 1.1 christos (htab->sgotplt != NULL
9560 1.1 christos ? htab->sgotplt->name : htab->got->name));
9561 1.1 christos bfd_set_error (bfd_error_bad_value);
9562 1.1 christos ret = FALSE;
9563 1.1 christos }
9564 1.1 christos
9565 1.1 christos elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
9566 1.1 christos }
9567 1.1 christos
9568 1.1 christos /* Fill in the first entry in the VxWorks procedure linkage table. */
9569 1.1 christos if (splt && splt->size > 0)
9570 1.1 christos {
9571 1.1 christos /* Use the right PLT. */
9572 1.1 christos const bfd_vma *plt_entry = (info->shared
9573 1.1 christos ? ppc_elf_vxworks_pic_plt0_entry
9574 1.1 christos : ppc_elf_vxworks_plt0_entry);
9575 1.1 christos
9576 1.1 christos if (!info->shared)
9577 1.1 christos {
9578 1.1 christos bfd_vma got_value = SYM_VAL (htab->elf.hgot);
9579 1.1 christos
9580 1.1 christos bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
9581 1.1 christos splt->contents + 0);
9582 1.1 christos bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
9583 1.1 christos splt->contents + 4);
9584 1.1 christos }
9585 1.1 christos else
9586 1.1 christos {
9587 1.1 christos bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
9588 1.1 christos bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
9589 1.1 christos }
9590 1.1 christos bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
9591 1.1 christos bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
9592 1.1 christos bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
9593 1.1 christos bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
9594 1.1 christos bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
9595 1.1 christos bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
9596 1.1 christos
9597 1.1 christos if (! info->shared)
9598 1.1 christos {
9599 1.1 christos Elf_Internal_Rela rela;
9600 1.1 christos bfd_byte *loc;
9601 1.1 christos
9602 1.1 christos loc = htab->srelplt2->contents;
9603 1.1 christos
9604 1.1 christos /* Output the @ha relocation for the first instruction. */
9605 1.1 christos rela.r_offset = (htab->plt->output_section->vma
9606 1.1 christos + htab->plt->output_offset
9607 1.1 christos + 2);
9608 1.1 christos rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9609 1.1 christos rela.r_addend = 0;
9610 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9611 1.1 christos loc += sizeof (Elf32_External_Rela);
9612 1.1 christos
9613 1.1 christos /* Output the @l relocation for the second instruction. */
9614 1.1 christos rela.r_offset = (htab->plt->output_section->vma
9615 1.1 christos + htab->plt->output_offset
9616 1.1 christos + 6);
9617 1.1 christos rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9618 1.1 christos rela.r_addend = 0;
9619 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9620 1.1 christos loc += sizeof (Elf32_External_Rela);
9621 1.1 christos
9622 1.1 christos /* Fix up the remaining relocations. They may have the wrong
9623 1.1 christos symbol index for _G_O_T_ or _P_L_T_ depending on the order
9624 1.1 christos in which symbols were output. */
9625 1.1 christos while (loc < htab->srelplt2->contents + htab->srelplt2->size)
9626 1.1 christos {
9627 1.1 christos Elf_Internal_Rela rel;
9628 1.1 christos
9629 1.1 christos bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
9630 1.1 christos rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9631 1.1 christos bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
9632 1.1 christos loc += sizeof (Elf32_External_Rela);
9633 1.1 christos
9634 1.1 christos bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
9635 1.1 christos rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9636 1.1 christos bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
9637 1.1 christos loc += sizeof (Elf32_External_Rela);
9638 1.1 christos
9639 1.1 christos bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
9640 1.1 christos rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
9641 1.1 christos bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
9642 1.1 christos loc += sizeof (Elf32_External_Rela);
9643 1.1 christos }
9644 1.1 christos }
9645 1.1 christos }
9646 1.1 christos
9647 1.1 christos if (htab->glink != NULL
9648 1.1 christos && htab->glink->contents != NULL
9649 1.1 christos && htab->elf.dynamic_sections_created)
9650 1.1 christos {
9651 1.1 christos unsigned char *p;
9652 1.1 christos unsigned char *endp;
9653 1.1 christos bfd_vma res0;
9654 1.1 christos unsigned int i;
9655 1.1 christos
9656 1.1 christos /*
9657 1.1 christos * PIC glink code is the following:
9658 1.1 christos *
9659 1.1 christos * # ith PLT code stub.
9660 1.1 christos * addis 11,30,(plt+(i-1)*4-got)@ha
9661 1.1 christos * lwz 11,(plt+(i-1)*4-got)@l(11)
9662 1.1 christos * mtctr 11
9663 1.1 christos * bctr
9664 1.1 christos *
9665 1.1 christos * # A table of branches, one for each plt entry.
9666 1.1 christos * # The idea is that the plt call stub loads ctr and r11 with these
9667 1.1 christos * # addresses, so (r11 - res_0) gives the plt index * 4.
9668 1.1 christos * res_0: b PLTresolve
9669 1.1 christos * res_1: b PLTresolve
9670 1.1 christos * .
9671 1.1 christos * # Some number of entries towards the end can be nops
9672 1.1 christos * res_n_m3: nop
9673 1.1 christos * res_n_m2: nop
9674 1.1 christos * res_n_m1:
9675 1.1 christos *
9676 1.1 christos * PLTresolve:
9677 1.1 christos * addis 11,11,(1f-res_0)@ha
9678 1.1 christos * mflr 0
9679 1.1 christos * bcl 20,31,1f
9680 1.1 christos * 1: addi 11,11,(1b-res_0)@l
9681 1.1 christos * mflr 12
9682 1.1 christos * mtlr 0
9683 1.1 christos * sub 11,11,12 # r11 = index * 4
9684 1.1 christos * addis 12,12,(got+4-1b)@ha
9685 1.1 christos * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
9686 1.1 christos * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
9687 1.1 christos * mtctr 0
9688 1.1 christos * add 0,11,11
9689 1.1 christos * add 11,0,11 # r11 = index * 12 = reloc offset.
9690 1.1 christos * bctr
9691 1.1 christos */
9692 1.1 christos static const unsigned int pic_plt_resolve[] =
9693 1.1 christos {
9694 1.1 christos ADDIS_11_11,
9695 1.1 christos MFLR_0,
9696 1.1 christos BCL_20_31,
9697 1.1 christos ADDI_11_11,
9698 1.1 christos MFLR_12,
9699 1.1 christos MTLR_0,
9700 1.1 christos SUB_11_11_12,
9701 1.1 christos ADDIS_12_12,
9702 1.1 christos LWZ_0_12,
9703 1.1 christos LWZ_12_12,
9704 1.1 christos MTCTR_0,
9705 1.1 christos ADD_0_11_11,
9706 1.1 christos ADD_11_0_11,
9707 1.1 christos BCTR,
9708 1.1 christos NOP,
9709 1.1 christos NOP
9710 1.1 christos };
9711 1.1 christos
9712 1.1 christos /*
9713 1.1 christos * Non-PIC glink code is a little simpler.
9714 1.1 christos *
9715 1.1 christos * # ith PLT code stub.
9716 1.1 christos * lis 11,(plt+(i-1)*4)@ha
9717 1.1 christos * lwz 11,(plt+(i-1)*4)@l(11)
9718 1.1 christos * mtctr 11
9719 1.1 christos * bctr
9720 1.1 christos *
9721 1.1 christos * The branch table is the same, then comes
9722 1.1 christos *
9723 1.1 christos * PLTresolve:
9724 1.1 christos * lis 12,(got+4)@ha
9725 1.1 christos * addis 11,11,(-res_0)@ha
9726 1.1 christos * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
9727 1.1 christos * addi 11,11,(-res_0)@l # r11 = index * 4
9728 1.1 christos * mtctr 0
9729 1.1 christos * add 0,11,11
9730 1.1 christos * lwz 12,(got+8)@l(12) # got[2] contains the map address
9731 1.1 christos * add 11,0,11 # r11 = index * 12 = reloc offset.
9732 1.1 christos * bctr
9733 1.1 christos */
9734 1.1 christos static const unsigned int plt_resolve[] =
9735 1.1 christos {
9736 1.1 christos LIS_12,
9737 1.1 christos ADDIS_11_11,
9738 1.1 christos LWZ_0_12,
9739 1.1 christos ADDI_11_11,
9740 1.1 christos MTCTR_0,
9741 1.1 christos ADD_0_11_11,
9742 1.1 christos LWZ_12_12,
9743 1.1 christos ADD_11_0_11,
9744 1.1 christos BCTR,
9745 1.1 christos NOP,
9746 1.1 christos NOP,
9747 1.1 christos NOP,
9748 1.1 christos NOP,
9749 1.1 christos NOP,
9750 1.1 christos NOP,
9751 1.1 christos NOP
9752 1.1 christos };
9753 1.1 christos
9754 1.1 christos if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
9755 1.1 christos abort ();
9756 1.1 christos if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
9757 1.1 christos abort ();
9758 1.1 christos
9759 1.1 christos /* Build the branch table, one for each plt entry (less one),
9760 1.1 christos and perhaps some padding. */
9761 1.1 christos p = htab->glink->contents;
9762 1.1 christos p += htab->glink_pltresolve;
9763 1.1 christos endp = htab->glink->contents;
9764 1.1 christos endp += htab->glink->size - GLINK_PLTRESOLVE;
9765 1.1 christos while (p < endp - 8 * 4)
9766 1.1 christos {
9767 1.1 christos bfd_put_32 (output_bfd, B + endp - p, p);
9768 1.1 christos p += 4;
9769 1.1 christos }
9770 1.1 christos while (p < endp)
9771 1.1 christos {
9772 1.1 christos bfd_put_32 (output_bfd, NOP, p);
9773 1.1 christos p += 4;
9774 1.1 christos }
9775 1.1 christos
9776 1.1 christos res0 = (htab->glink_pltresolve
9777 1.1 christos + htab->glink->output_section->vma
9778 1.1 christos + htab->glink->output_offset);
9779 1.1 christos
9780 1.1 christos /* Last comes the PLTresolve stub. */
9781 1.1 christos if (info->shared)
9782 1.1 christos {
9783 1.1 christos bfd_vma bcl;
9784 1.1 christos
9785 1.1 christos for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
9786 1.1 christos {
9787 1.1 christos bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
9788 1.1 christos p += 4;
9789 1.1 christos }
9790 1.1 christos p -= 4 * ARRAY_SIZE (pic_plt_resolve);
9791 1.1 christos
9792 1.1 christos bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
9793 1.1 christos + htab->glink->output_section->vma
9794 1.1 christos + htab->glink->output_offset);
9795 1.1 christos
9796 1.1 christos bfd_put_32 (output_bfd,
9797 1.1 christos ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
9798 1.1 christos bfd_put_32 (output_bfd,
9799 1.1 christos ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
9800 1.1 christos bfd_put_32 (output_bfd,
9801 1.1 christos ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
9802 1.1 christos if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
9803 1.1 christos {
9804 1.1 christos bfd_put_32 (output_bfd,
9805 1.1 christos LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
9806 1.1 christos bfd_put_32 (output_bfd,
9807 1.1 christos LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
9808 1.1 christos }
9809 1.1 christos else
9810 1.1 christos {
9811 1.1 christos bfd_put_32 (output_bfd,
9812 1.1 christos LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
9813 1.1 christos bfd_put_32 (output_bfd,
9814 1.1 christos LWZ_12_12 + 4, p + 9*4);
9815 1.1 christos }
9816 1.1 christos }
9817 1.1 christos else
9818 1.1 christos {
9819 1.1 christos for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
9820 1.1 christos {
9821 1.1 christos bfd_put_32 (output_bfd, plt_resolve[i], p);
9822 1.1 christos p += 4;
9823 1.1 christos }
9824 1.1 christos p -= 4 * ARRAY_SIZE (plt_resolve);
9825 1.1 christos
9826 1.1 christos bfd_put_32 (output_bfd,
9827 1.1 christos LIS_12 + PPC_HA (got + 4), p + 0*4);
9828 1.1 christos bfd_put_32 (output_bfd,
9829 1.1 christos ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
9830 1.1 christos bfd_put_32 (output_bfd,
9831 1.1 christos ADDI_11_11 + PPC_LO (-res0), p + 3*4);
9832 1.1 christos if (PPC_HA (got + 4) == PPC_HA (got + 8))
9833 1.1 christos {
9834 1.1 christos bfd_put_32 (output_bfd,
9835 1.1 christos LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
9836 1.1 christos bfd_put_32 (output_bfd,
9837 1.1 christos LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
9838 1.1 christos }
9839 1.1 christos else
9840 1.1 christos {
9841 1.1 christos bfd_put_32 (output_bfd,
9842 1.1 christos LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
9843 1.1 christos bfd_put_32 (output_bfd,
9844 1.1 christos LWZ_12_12 + 4, p + 6*4);
9845 1.1 christos }
9846 1.1 christos }
9847 1.1 christos }
9848 1.1 christos
9849 1.1 christos if (htab->glink_eh_frame != NULL
9850 1.1 christos && htab->glink_eh_frame->contents != NULL)
9851 1.1 christos {
9852 1.1 christos unsigned char *p = htab->glink_eh_frame->contents;
9853 1.1 christos bfd_vma val;
9854 1.1 christos
9855 1.1 christos p += sizeof (glink_eh_frame_cie);
9856 1.1 christos /* FDE length. */
9857 1.1 christos p += 4;
9858 1.1 christos /* CIE pointer. */
9859 1.1 christos p += 4;
9860 1.1 christos /* Offset to .glink. */
9861 1.1 christos val = (htab->glink->output_section->vma
9862 1.1 christos + htab->glink->output_offset);
9863 1.1 christos val -= (htab->glink_eh_frame->output_section->vma
9864 1.1 christos + htab->glink_eh_frame->output_offset);
9865 1.1 christos val -= p - htab->glink_eh_frame->contents;
9866 1.1 christos bfd_put_32 (htab->elf.dynobj, val, p);
9867 1.1 christos
9868 1.1 christos if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
9869 1.1 christos && !_bfd_elf_write_section_eh_frame (output_bfd, info,
9870 1.1 christos htab->glink_eh_frame,
9871 1.1 christos htab->glink_eh_frame->contents))
9872 1.1 christos return FALSE;
9873 1.1 christos }
9874 1.1 christos
9875 1.1 christos return ret;
9876 1.1 christos }
9877 1.1 christos
9878 1.1 christos #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
9880 1.1 christos #define TARGET_LITTLE_NAME "elf32-powerpcle"
9881 1.1 christos #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
9882 1.1 christos #define TARGET_BIG_NAME "elf32-powerpc"
9883 1.1 christos #define ELF_ARCH bfd_arch_powerpc
9884 1.1 christos #define ELF_TARGET_ID PPC32_ELF_DATA
9885 1.1 christos #define ELF_MACHINE_CODE EM_PPC
9886 1.1 christos #ifdef __QNXTARGET__
9887 1.1 christos #define ELF_MAXPAGESIZE 0x1000
9888 1.1 christos #else
9889 1.1 christos #define ELF_MAXPAGESIZE 0x10000
9890 1.1 christos #endif
9891 1.1 christos #define ELF_MINPAGESIZE 0x1000
9892 1.1 christos #define ELF_COMMONPAGESIZE 0x1000
9893 1.1 christos #define elf_info_to_howto ppc_elf_info_to_howto
9894 1.1 christos
9895 1.1 christos #ifdef EM_CYGNUS_POWERPC
9896 1.1 christos #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
9897 1.1 christos #endif
9898 1.1 christos
9899 1.1 christos #ifdef EM_PPC_OLD
9900 1.1 christos #define ELF_MACHINE_ALT2 EM_PPC_OLD
9901 1.1 christos #endif
9902 1.1 christos
9903 1.1 christos #define elf_backend_plt_not_loaded 1
9904 1.1 christos #define elf_backend_can_gc_sections 1
9905 1.1 christos #define elf_backend_can_refcount 1
9906 1.1 christos #define elf_backend_rela_normal 1
9907 1.1 christos
9908 1.1 christos #define bfd_elf32_mkobject ppc_elf_mkobject
9909 1.1 christos #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
9910 1.1 christos #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
9911 1.1 christos #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
9912 1.1 christos #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
9913 1.1 christos #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
9914 1.1 christos #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
9915 1.1 christos #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
9916 1.1 christos
9917 1.1 christos #define elf_backend_object_p ppc_elf_object_p
9918 1.1 christos #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
9919 1.1 christos #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
9920 1.1 christos #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
9921 1.1 christos #define elf_backend_relocate_section ppc_elf_relocate_section
9922 1.1 christos #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
9923 1.1 christos #define elf_backend_check_relocs ppc_elf_check_relocs
9924 1.1 christos #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
9925 1.1 christos #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
9926 1.1 christos #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
9927 1.1 christos #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
9928 1.1 christos #define elf_backend_hash_symbol ppc_elf_hash_symbol
9929 1.1 christos #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
9930 1.1 christos #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
9931 1.1 christos #define elf_backend_fake_sections ppc_elf_fake_sections
9932 1.1 christos #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
9933 1.1 christos #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
9934 1.1 christos #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
9935 1.1 christos #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
9936 1.1 christos #define elf_backend_write_core_note ppc_elf_write_core_note
9937 1.1 christos #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
9938 1.1 christos #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
9939 1.1 christos #define elf_backend_final_write_processing ppc_elf_final_write_processing
9940 1.1 christos #define elf_backend_write_section ppc_elf_write_section
9941 1.1 christos #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
9942 1.1 christos #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
9943 1.1 christos #define elf_backend_action_discarded ppc_elf_action_discarded
9944 1.1 christos #define elf_backend_init_index_section _bfd_elf_init_1_index_section
9945 1.1 christos #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
9946 1.1 christos #define elf_backend_section_processing ppc_elf_section_processing
9947 1.1 christos
9948 1.1 christos #include "elf32-target.h"
9949 1.1 christos
9950 1.1 christos /* FreeBSD Target */
9951 1.1 christos
9952 1.1 christos #undef TARGET_LITTLE_SYM
9953 1.1 christos #undef TARGET_LITTLE_NAME
9954 1.1 christos
9955 1.1 christos #undef TARGET_BIG_SYM
9956 1.1 christos #define TARGET_BIG_SYM bfd_elf32_powerpc_freebsd_vec
9957 1.1 christos #undef TARGET_BIG_NAME
9958 1.1 christos #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
9959 1.1 christos
9960 1.1 christos #undef ELF_OSABI
9961 1.1 christos #define ELF_OSABI ELFOSABI_FREEBSD
9962 1.1 christos
9963 1.1 christos #undef elf32_bed
9964 1.1 christos #define elf32_bed elf32_powerpc_fbsd_bed
9965 1.1 christos
9966 1.1 christos #include "elf32-target.h"
9967 1.1 christos
9968 1.1 christos /* VxWorks Target */
9969 1.1 christos
9970 1.1 christos #undef TARGET_LITTLE_SYM
9971 1.1 christos #undef TARGET_LITTLE_NAME
9972 1.1 christos
9973 1.1 christos #undef TARGET_BIG_SYM
9974 1.1 christos #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
9975 1.1 christos #undef TARGET_BIG_NAME
9976 1.1 christos #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
9977 1.1 christos
9978 1.1 christos #undef ELF_OSABI
9979 1.1 christos
9980 1.1 christos /* VxWorks uses the elf default section flags for .plt. */
9981 1.1 christos static const struct bfd_elf_special_section *
9982 1.1 christos ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
9983 1.1 christos {
9984 1.1 christos if (sec->name == NULL)
9985 1.1 christos return NULL;
9986 1.1 christos
9987 1.1 christos if (strcmp (sec->name, ".plt") == 0)
9988 1.1 christos return _bfd_elf_get_sec_type_attr (abfd, sec);
9989 1.1 christos
9990 1.1 christos return ppc_elf_get_sec_type_attr (abfd, sec);
9991 1.1 christos }
9992 1.1 christos
9993 1.1 christos /* Like ppc_elf_link_hash_table_create, but overrides
9994 1.1 christos appropriately for VxWorks. */
9995 1.1 christos static struct bfd_link_hash_table *
9996 1.1 christos ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
9997 1.1 christos {
9998 1.1 christos struct bfd_link_hash_table *ret;
9999 1.1 christos
10000 1.1 christos ret = ppc_elf_link_hash_table_create (abfd);
10001 1.1 christos if (ret)
10002 1.1 christos {
10003 1.1 christos struct ppc_elf_link_hash_table *htab
10004 1.1 christos = (struct ppc_elf_link_hash_table *)ret;
10005 1.1 christos htab->is_vxworks = 1;
10006 1.1 christos htab->plt_type = PLT_VXWORKS;
10007 1.1 christos htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10008 1.1 christos htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10009 1.1 christos htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10010 1.1 christos }
10011 1.1 christos return ret;
10012 1.1 christos }
10013 1.1 christos
10014 1.1 christos /* Tweak magic VxWorks symbols as they are loaded. */
10015 1.1 christos static bfd_boolean
10016 1.1 christos ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10017 1.1 christos struct bfd_link_info *info,
10018 1.1 christos Elf_Internal_Sym *sym,
10019 1.1 christos const char **namep ATTRIBUTE_UNUSED,
10020 1.1 christos flagword *flagsp ATTRIBUTE_UNUSED,
10021 1.1 christos asection **secp,
10022 1.1 christos bfd_vma *valp)
10023 1.1 christos {
10024 1.1 christos if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
10025 1.1 christos valp))
10026 1.1 christos return FALSE;
10027 1.1 christos
10028 1.1 christos return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
10029 1.1 christos }
10030 1.1 christos
10031 1.1 christos static void
10032 1.1 christos ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10033 1.1 christos {
10034 1.1 christos ppc_elf_final_write_processing(abfd, linker);
10035 1.1 christos elf_vxworks_final_write_processing(abfd, linker);
10036 1.1 christos }
10037 1.1 christos
10038 1.1 christos /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10039 1.1 christos define it. */
10040 1.1 christos #undef elf_backend_want_plt_sym
10041 1.1 christos #define elf_backend_want_plt_sym 1
10042 1.1 christos #undef elf_backend_want_got_plt
10043 1.1 christos #define elf_backend_want_got_plt 1
10044 1.1 christos #undef elf_backend_got_symbol_offset
10045 1.1 christos #define elf_backend_got_symbol_offset 0
10046 1.1 christos #undef elf_backend_plt_not_loaded
10047 1.1 christos #define elf_backend_plt_not_loaded 0
10048 1.1 christos #undef elf_backend_plt_readonly
10049 1.1 christos #define elf_backend_plt_readonly 1
10050 1.1 christos #undef elf_backend_got_header_size
10051 1.1 christos #define elf_backend_got_header_size 12
10052 1.1 christos
10053 1.1 christos #undef bfd_elf32_get_synthetic_symtab
10054 1.1 christos
10055 1.1 christos #undef bfd_elf32_bfd_link_hash_table_create
10056 1.1 christos #define bfd_elf32_bfd_link_hash_table_create \
10057 1.1 christos ppc_elf_vxworks_link_hash_table_create
10058 1.1 christos #undef elf_backend_add_symbol_hook
10059 #define elf_backend_add_symbol_hook \
10060 ppc_elf_vxworks_add_symbol_hook
10061 #undef elf_backend_link_output_symbol_hook
10062 #define elf_backend_link_output_symbol_hook \
10063 elf_vxworks_link_output_symbol_hook
10064 #undef elf_backend_final_write_processing
10065 #define elf_backend_final_write_processing \
10066 ppc_elf_vxworks_final_write_processing
10067 #undef elf_backend_get_sec_type_attr
10068 #define elf_backend_get_sec_type_attr \
10069 ppc_elf_vxworks_get_sec_type_attr
10070 #undef elf_backend_emit_relocs
10071 #define elf_backend_emit_relocs \
10072 elf_vxworks_emit_relocs
10073
10074 #undef elf32_bed
10075 #define elf32_bed ppc_elf_vxworks_bed
10076 #undef elf_backend_post_process_headers
10077
10078 #include "elf32-target.h"
10079