elf32-cris.c revision 1.1.1.6 1 1.1 skrll /* CRIS-specific support for 32-bit ELF.
2 1.1.1.6 christos Copyright (C) 2000-2018 Free Software Foundation, Inc.
3 1.1 skrll Contributed by Axis Communications AB.
4 1.1 skrll Written by Hans-Peter Nilsson, based on elf32-fr30.c
5 1.1 skrll PIC and shlib bits based primarily on elf32-m68k.c and elf32-i386.c.
6 1.1 skrll
7 1.1 skrll This file is part of BFD, the Binary File Descriptor library.
8 1.1 skrll
9 1.1 skrll This program is free software; you can redistribute it and/or modify
10 1.1 skrll it under the terms of the GNU General Public License as published by
11 1.1 skrll the Free Software Foundation; either version 3 of the License, or
12 1.1 skrll (at your option) any later version.
13 1.1 skrll
14 1.1 skrll This program is distributed in the hope that it will be useful,
15 1.1 skrll but WITHOUT ANY WARRANTY; without even the implied warranty of
16 1.1 skrll MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 1.1 skrll GNU General Public License for more details.
18 1.1 skrll
19 1.1 skrll You should have received a copy of the GNU General Public License
20 1.1 skrll along with this program; if not, write to the Free Software
21 1.1 skrll Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22 1.1 skrll MA 02110-1301, USA. */
23 1.1 skrll
24 1.1 skrll #include "sysdep.h"
25 1.1 skrll #include "bfd.h"
26 1.1 skrll #include "libbfd.h"
27 1.1 skrll #include "elf-bfd.h"
28 1.1 skrll #include "elf/cris.h"
29 1.1.1.2 christos #include <limits.h>
30 1.1 skrll
31 1.1.1.3 christos bfd_reloc_status_type
32 1.1.1.3 christos cris_elf_pcrel_reloc (bfd *, arelent *, asymbol *, void *,
33 1.1.1.3 christos asection *, bfd *, char **);
34 1.1.1.3 christos static bfd_boolean
35 1.1.1.3 christos cris_elf_set_mach_from_flags (bfd *, unsigned long);
36 1.1 skrll
37 1.1.1.3 christos /* Forward declarations. */
38 1.1 skrll static reloc_howto_type cris_elf_howto_table [] =
39 1.1 skrll {
40 1.1 skrll /* This reloc does nothing. */
41 1.1 skrll HOWTO (R_CRIS_NONE, /* type */
42 1.1 skrll 0, /* rightshift */
43 1.1.1.4 christos 3, /* size (0 = byte, 1 = short, 2 = long) */
44 1.1.1.4 christos 0, /* bitsize */
45 1.1 skrll FALSE, /* pc_relative */
46 1.1 skrll 0, /* bitpos */
47 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
48 1.1 skrll bfd_elf_generic_reloc, /* special_function */
49 1.1 skrll "R_CRIS_NONE", /* name */
50 1.1 skrll FALSE, /* partial_inplace */
51 1.1 skrll 0, /* src_mask */
52 1.1 skrll 0, /* dst_mask */
53 1.1 skrll FALSE), /* pcrel_offset */
54 1.1 skrll
55 1.1 skrll /* An 8 bit absolute relocation. */
56 1.1 skrll HOWTO (R_CRIS_8, /* type */
57 1.1 skrll 0, /* rightshift */
58 1.1 skrll 0, /* size (0 = byte, 1 = short, 2 = long) */
59 1.1 skrll 8, /* bitsize */
60 1.1 skrll FALSE, /* pc_relative */
61 1.1 skrll 0, /* bitpos */
62 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
63 1.1 skrll bfd_elf_generic_reloc, /* special_function */
64 1.1 skrll "R_CRIS_8", /* name */
65 1.1 skrll FALSE, /* partial_inplace */
66 1.1 skrll 0x0000, /* src_mask */
67 1.1 skrll 0x00ff, /* dst_mask */
68 1.1 skrll FALSE), /* pcrel_offset */
69 1.1 skrll
70 1.1 skrll /* A 16 bit absolute relocation. */
71 1.1 skrll HOWTO (R_CRIS_16, /* type */
72 1.1 skrll 0, /* rightshift */
73 1.1 skrll 1, /* size (0 = byte, 1 = short, 2 = long) */
74 1.1 skrll 16, /* bitsize */
75 1.1 skrll FALSE, /* pc_relative */
76 1.1 skrll 0, /* bitpos */
77 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
78 1.1 skrll bfd_elf_generic_reloc, /* special_function */
79 1.1 skrll "R_CRIS_16", /* name */
80 1.1 skrll FALSE, /* partial_inplace */
81 1.1 skrll 0x00000000, /* src_mask */
82 1.1 skrll 0x0000ffff, /* dst_mask */
83 1.1 skrll FALSE), /* pcrel_offset */
84 1.1 skrll
85 1.1 skrll /* A 32 bit absolute relocation. */
86 1.1 skrll HOWTO (R_CRIS_32, /* type */
87 1.1 skrll 0, /* rightshift */
88 1.1 skrll 2, /* size (0 = byte, 1 = short, 2 = long) */
89 1.1 skrll 32, /* bitsize */
90 1.1 skrll FALSE, /* pc_relative */
91 1.1 skrll 0, /* bitpos */
92 1.1 skrll /* We don't want overflow complaints for 64-bit vma builds
93 1.1 skrll for e.g. sym+0x40000000 (or actually sym-0xc0000000 in
94 1.1 skrll 32-bit ELF) where sym=0xc0001234.
95 1.1 skrll Don't do this for the PIC relocs, as we don't expect to
96 1.1 skrll see them with large offsets. */
97 1.1 skrll complain_overflow_dont, /* complain_on_overflow */
98 1.1 skrll bfd_elf_generic_reloc, /* special_function */
99 1.1 skrll "R_CRIS_32", /* name */
100 1.1 skrll FALSE, /* partial_inplace */
101 1.1 skrll 0x00000000, /* src_mask */
102 1.1 skrll 0xffffffff, /* dst_mask */
103 1.1 skrll FALSE), /* pcrel_offset */
104 1.1 skrll
105 1.1 skrll /* An 8 bit PC-relative relocation. */
106 1.1 skrll HOWTO (R_CRIS_8_PCREL, /* type */
107 1.1 skrll 0, /* rightshift */
108 1.1 skrll 0, /* size (0 = byte, 1 = short, 2 = long) */
109 1.1 skrll 8, /* bitsize */
110 1.1 skrll TRUE, /* pc_relative */
111 1.1 skrll 0, /* bitpos */
112 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
113 1.1 skrll cris_elf_pcrel_reloc, /* special_function */
114 1.1 skrll "R_CRIS_8_PCREL", /* name */
115 1.1 skrll FALSE, /* partial_inplace */
116 1.1 skrll 0x0000, /* src_mask */
117 1.1 skrll 0x00ff, /* dst_mask */
118 1.1 skrll TRUE), /* pcrel_offset */
119 1.1 skrll
120 1.1 skrll /* A 16 bit PC-relative relocation. */
121 1.1 skrll HOWTO (R_CRIS_16_PCREL, /* type */
122 1.1 skrll 0, /* rightshift */
123 1.1 skrll 1, /* size (0 = byte, 1 = short, 2 = long) */
124 1.1 skrll 16, /* bitsize */
125 1.1 skrll TRUE, /* pc_relative */
126 1.1 skrll 0, /* bitpos */
127 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
128 1.1 skrll cris_elf_pcrel_reloc, /* special_function */
129 1.1 skrll "R_CRIS_16_PCREL", /* name */
130 1.1 skrll FALSE, /* partial_inplace */
131 1.1 skrll 0x00000000, /* src_mask */
132 1.1 skrll 0x0000ffff, /* dst_mask */
133 1.1 skrll TRUE), /* pcrel_offset */
134 1.1 skrll
135 1.1 skrll /* A 32 bit PC-relative relocation. */
136 1.1 skrll HOWTO (R_CRIS_32_PCREL, /* type */
137 1.1 skrll 0, /* rightshift */
138 1.1 skrll 2, /* size (0 = byte, 1 = short, 2 = long) */
139 1.1 skrll 32, /* bitsize */
140 1.1 skrll TRUE, /* pc_relative */
141 1.1 skrll 0, /* bitpos */
142 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
143 1.1 skrll cris_elf_pcrel_reloc, /* special_function */
144 1.1 skrll "R_CRIS_32_PCREL", /* name */
145 1.1 skrll FALSE, /* partial_inplace */
146 1.1 skrll 0x00000000, /* src_mask */
147 1.1 skrll 0xffffffff, /* dst_mask */
148 1.1 skrll TRUE), /* pcrel_offset */
149 1.1 skrll
150 1.1 skrll /* GNU extension to record C++ vtable hierarchy. */
151 1.1 skrll HOWTO (R_CRIS_GNU_VTINHERIT, /* type */
152 1.1 skrll 0, /* rightshift */
153 1.1 skrll 2, /* size (0 = byte, 1 = short, 2 = long) */
154 1.1 skrll 0, /* bitsize */
155 1.1 skrll FALSE, /* pc_relative */
156 1.1 skrll 0, /* bitpos */
157 1.1 skrll complain_overflow_dont, /* complain_on_overflow */
158 1.1 skrll NULL, /* special_function */
159 1.1 skrll "R_CRIS_GNU_VTINHERIT", /* name */
160 1.1 skrll FALSE, /* partial_inplace */
161 1.1 skrll 0, /* src_mask */
162 1.1 skrll 0, /* dst_mask */
163 1.1 skrll FALSE), /* pcrel_offset */
164 1.1 skrll
165 1.1 skrll /* GNU extension to record C++ vtable member usage. */
166 1.1 skrll HOWTO (R_CRIS_GNU_VTENTRY, /* type */
167 1.1 skrll 0, /* rightshift */
168 1.1 skrll 2, /* size (0 = byte, 1 = short, 2 = long) */
169 1.1 skrll 0, /* bitsize */
170 1.1 skrll FALSE, /* pc_relative */
171 1.1 skrll 0, /* bitpos */
172 1.1 skrll complain_overflow_dont, /* complain_on_overflow */
173 1.1 skrll _bfd_elf_rel_vtable_reloc_fn, /* special_function */
174 1.1 skrll "R_CRIS_GNU_VTENTRY", /* name */
175 1.1 skrll FALSE, /* partial_inplace */
176 1.1 skrll 0, /* src_mask */
177 1.1 skrll 0, /* dst_mask */
178 1.1 skrll FALSE), /* pcrel_offset */
179 1.1 skrll
180 1.1 skrll /* This is used only by the dynamic linker. The symbol should exist
181 1.1 skrll both in the object being run and in some shared library. The
182 1.1 skrll dynamic linker copies the data addressed by the symbol from the
183 1.1 skrll shared library into the object, because the object being
184 1.1 skrll run has to have the data at some particular address. */
185 1.1 skrll HOWTO (R_CRIS_COPY, /* type */
186 1.1 skrll 0, /* rightshift */
187 1.1 skrll 2, /* size (0 = byte, 1 = short, 2 = long) */
188 1.1 skrll 32, /* bitsize */
189 1.1 skrll FALSE, /* pc_relative */
190 1.1 skrll 0, /* bitpos */
191 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
192 1.1 skrll bfd_elf_generic_reloc, /* special_function */
193 1.1 skrll "R_CRIS_COPY", /* name */
194 1.1 skrll FALSE, /* partial_inplace */
195 1.1 skrll 0, /* src_mask */
196 1.1 skrll 0, /* dst_mask */
197 1.1 skrll FALSE), /* pcrel_offset */
198 1.1 skrll
199 1.1 skrll /* Like R_CRIS_32, but used when setting global offset table entries. */
200 1.1 skrll HOWTO (R_CRIS_GLOB_DAT, /* type */
201 1.1 skrll 0, /* rightshift */
202 1.1 skrll 2, /* size (0 = byte, 1 = short, 2 = long) */
203 1.1 skrll 32, /* bitsize */
204 1.1 skrll FALSE, /* pc_relative */
205 1.1 skrll 0, /* bitpos */
206 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
207 1.1 skrll bfd_elf_generic_reloc, /* special_function */
208 1.1 skrll "R_CRIS_GLOB_DAT", /* name */
209 1.1 skrll FALSE, /* partial_inplace */
210 1.1 skrll 0, /* src_mask */
211 1.1 skrll 0xffffffff, /* dst_mask */
212 1.1 skrll FALSE), /* pcrel_offset */
213 1.1 skrll
214 1.1 skrll /* Marks a procedure linkage table entry for a symbol. */
215 1.1 skrll HOWTO (R_CRIS_JUMP_SLOT, /* type */
216 1.1 skrll 0, /* rightshift */
217 1.1 skrll 2, /* size (0 = byte, 1 = short, 2 = long) */
218 1.1 skrll 32, /* bitsize */
219 1.1 skrll FALSE, /* pc_relative */
220 1.1 skrll 0, /* bitpos */
221 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
222 1.1 skrll bfd_elf_generic_reloc, /* special_function */
223 1.1 skrll "R_CRIS_JUMP_SLOT", /* name */
224 1.1 skrll FALSE, /* partial_inplace */
225 1.1 skrll 0, /* src_mask */
226 1.1 skrll 0, /* dst_mask */
227 1.1 skrll FALSE), /* pcrel_offset */
228 1.1 skrll
229 1.1 skrll /* Used only by the dynamic linker. When the object is run, this
230 1.1 skrll longword is set to the load address of the object, plus the
231 1.1 skrll addend. */
232 1.1 skrll HOWTO (R_CRIS_RELATIVE, /* type */
233 1.1 skrll 0, /* rightshift */
234 1.1 skrll 2, /* size (0 = byte, 1 = short, 2 = long) */
235 1.1 skrll 32, /* bitsize */
236 1.1 skrll FALSE, /* pc_relative */
237 1.1 skrll 0, /* bitpos */
238 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
239 1.1 skrll bfd_elf_generic_reloc, /* special_function */
240 1.1 skrll "R_CRIS_RELATIVE", /* name */
241 1.1 skrll FALSE, /* partial_inplace */
242 1.1 skrll 0, /* src_mask */
243 1.1 skrll 0xffffffff, /* dst_mask */
244 1.1 skrll FALSE), /* pcrel_offset */
245 1.1 skrll
246 1.1 skrll /* Like R_CRIS_32, but referring to the GOT table entry for the symbol. */
247 1.1 skrll HOWTO (R_CRIS_16_GOT, /* type */
248 1.1 skrll 0, /* rightshift */
249 1.1 skrll 1, /* size (0 = byte, 1 = short, 2 = long) */
250 1.1 skrll 16, /* bitsize */
251 1.1 skrll FALSE, /* pc_relative */
252 1.1 skrll 0, /* bitpos */
253 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
254 1.1 skrll bfd_elf_generic_reloc, /* special_function */
255 1.1 skrll "R_CRIS_16_GOT", /* name */
256 1.1 skrll FALSE, /* partial_inplace */
257 1.1 skrll 0, /* src_mask */
258 1.1 skrll 0xffff, /* dst_mask */
259 1.1 skrll FALSE), /* pcrel_offset */
260 1.1 skrll
261 1.1 skrll HOWTO (R_CRIS_32_GOT, /* type */
262 1.1 skrll 0, /* rightshift */
263 1.1 skrll 2, /* size (0 = byte, 1 = short, 2 = long) */
264 1.1 skrll 32, /* bitsize */
265 1.1 skrll FALSE, /* pc_relative */
266 1.1 skrll 0, /* bitpos */
267 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
268 1.1 skrll bfd_elf_generic_reloc, /* special_function */
269 1.1 skrll "R_CRIS_32_GOT", /* name */
270 1.1 skrll FALSE, /* partial_inplace */
271 1.1 skrll 0, /* src_mask */
272 1.1 skrll 0xffffffff, /* dst_mask */
273 1.1 skrll FALSE), /* pcrel_offset */
274 1.1 skrll
275 1.1 skrll /* Like R_CRIS_32_GOT, but referring to (and requesting a) PLT part of
276 1.1 skrll the GOT table for the symbol. */
277 1.1 skrll HOWTO (R_CRIS_16_GOTPLT, /* type */
278 1.1 skrll 0, /* rightshift */
279 1.1 skrll 1, /* size (0 = byte, 1 = short, 2 = long) */
280 1.1 skrll 16, /* bitsize */
281 1.1 skrll FALSE, /* pc_relative */
282 1.1 skrll 0, /* bitpos */
283 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
284 1.1 skrll bfd_elf_generic_reloc, /* special_function */
285 1.1 skrll "R_CRIS_16_GOTPLT", /* name */
286 1.1 skrll FALSE, /* partial_inplace */
287 1.1 skrll 0, /* src_mask */
288 1.1 skrll 0xffff, /* dst_mask */
289 1.1 skrll FALSE), /* pcrel_offset */
290 1.1 skrll
291 1.1 skrll HOWTO (R_CRIS_32_GOTPLT, /* type */
292 1.1 skrll 0, /* rightshift */
293 1.1 skrll 2, /* size (0 = byte, 1 = short, 2 = long) */
294 1.1 skrll 32, /* bitsize */
295 1.1 skrll FALSE, /* pc_relative */
296 1.1 skrll 0, /* bitpos */
297 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
298 1.1 skrll bfd_elf_generic_reloc, /* special_function */
299 1.1 skrll "R_CRIS_32_GOTPLT", /* name */
300 1.1 skrll FALSE, /* partial_inplace */
301 1.1 skrll 0, /* src_mask */
302 1.1 skrll 0xffffffff, /* dst_mask */
303 1.1 skrll FALSE), /* pcrel_offset */
304 1.1 skrll
305 1.1 skrll /* A 32-bit offset from GOT to (local const) symbol: no GOT entry should
306 1.1 skrll be necessary. */
307 1.1 skrll HOWTO (R_CRIS_32_GOTREL, /* type */
308 1.1 skrll 0, /* rightshift */
309 1.1 skrll 2, /* size (0 = byte, 1 = short, 2 = long) */
310 1.1 skrll 32, /* bitsize */
311 1.1 skrll FALSE, /* pc_relative */
312 1.1 skrll 0, /* bitpos */
313 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
314 1.1 skrll bfd_elf_generic_reloc, /* special_function */
315 1.1 skrll "R_CRIS_32_GOTREL", /* name */
316 1.1 skrll FALSE, /* partial_inplace */
317 1.1 skrll 0, /* src_mask */
318 1.1 skrll 0xffffffff, /* dst_mask */
319 1.1 skrll FALSE), /* pcrel_offset */
320 1.1 skrll
321 1.1 skrll /* A 32-bit offset from GOT to entry for this symbol in PLT and request
322 1.1 skrll to create PLT entry for symbol. */
323 1.1 skrll HOWTO (R_CRIS_32_PLT_GOTREL, /* type */
324 1.1 skrll 0, /* rightshift */
325 1.1 skrll 2, /* size (0 = byte, 1 = short, 2 = long) */
326 1.1 skrll 32, /* bitsize */
327 1.1 skrll FALSE, /* pc_relative */
328 1.1 skrll 0, /* bitpos */
329 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
330 1.1 skrll bfd_elf_generic_reloc, /* special_function */
331 1.1 skrll "R_CRIS_32_PLT_GOTREL", /* name */
332 1.1 skrll FALSE, /* partial_inplace */
333 1.1 skrll 0, /* src_mask */
334 1.1 skrll 0xffffffff, /* dst_mask */
335 1.1 skrll FALSE), /* pcrel_offset */
336 1.1 skrll
337 1.1 skrll /* A 32-bit offset from PC (location after the relocation) + addend to
338 1.1 skrll entry for this symbol in PLT and request to create PLT entry for
339 1.1 skrll symbol. */
340 1.1 skrll HOWTO (R_CRIS_32_PLT_PCREL, /* type */
341 1.1 skrll 0, /* rightshift */
342 1.1 skrll 2, /* size (0 = byte, 1 = short, 2 = long) */
343 1.1 skrll 32, /* bitsize */
344 1.1 skrll TRUE, /* pc_relative */
345 1.1 skrll 0, /* bitpos */
346 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
347 1.1 skrll cris_elf_pcrel_reloc, /* special_function */
348 1.1 skrll "R_CRIS_32_PLT_PCREL", /* name */
349 1.1 skrll FALSE, /* partial_inplace */
350 1.1 skrll 0, /* src_mask */
351 1.1 skrll 0xffffffff, /* dst_mask */
352 1.1.1.2 christos TRUE), /* pcrel_offset */
353 1.1.1.2 christos
354 1.1.1.2 christos /* We don't handle these in any special manner and cross-format
355 1.1.1.2 christos linking is not supported; just recognize them enough to pass them
356 1.1.1.2 christos around. FIXME: do the same for most PIC relocs and add sanity
357 1.1.1.2 christos tests to actually refuse gracefully to handle these and PIC
358 1.1.1.2 christos relocs for cross-format linking. */
359 1.1.1.2 christos #define TLSHOWTO32(name) \
360 1.1.1.2 christos HOWTO (name, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, \
361 1.1.1.6 christos bfd_elf_generic_reloc, #name, FALSE, 0, 0xffffffff, FALSE)
362 1.1.1.2 christos #define TLSHOWTO16X(name, X) \
363 1.1.1.2 christos HOWTO (name, 0, 1, 16, FALSE, 0, complain_overflow_ ## X, \
364 1.1.1.6 christos bfd_elf_generic_reloc, #name, FALSE, 0, 0xffff, FALSE)
365 1.1.1.2 christos #define TLSHOWTO16(name) TLSHOWTO16X(name, unsigned)
366 1.1.1.2 christos #define TLSHOWTO16S(name) TLSHOWTO16X(name, signed)
367 1.1.1.2 christos
368 1.1.1.2 christos TLSHOWTO32 (R_CRIS_32_GOT_GD),
369 1.1.1.2 christos TLSHOWTO16 (R_CRIS_16_GOT_GD),
370 1.1.1.2 christos TLSHOWTO32 (R_CRIS_32_GD),
371 1.1.1.2 christos TLSHOWTO32 (R_CRIS_DTP),
372 1.1.1.2 christos TLSHOWTO32 (R_CRIS_32_DTPREL),
373 1.1.1.2 christos TLSHOWTO16S (R_CRIS_16_DTPREL),
374 1.1.1.2 christos TLSHOWTO32 (R_CRIS_32_GOT_TPREL),
375 1.1.1.2 christos TLSHOWTO16S (R_CRIS_16_GOT_TPREL),
376 1.1.1.2 christos TLSHOWTO32 (R_CRIS_32_TPREL),
377 1.1.1.2 christos TLSHOWTO16S (R_CRIS_16_TPREL),
378 1.1.1.2 christos TLSHOWTO32 (R_CRIS_DTPMOD),
379 1.1.1.2 christos TLSHOWTO32 (R_CRIS_32_IE)
380 1.1 skrll };
381 1.1 skrll
382 1.1 skrll /* Map BFD reloc types to CRIS ELF reloc types. */
384 1.1 skrll
385 1.1 skrll struct cris_reloc_map
386 1.1 skrll {
387 1.1 skrll bfd_reloc_code_real_type bfd_reloc_val;
388 1.1 skrll unsigned int cris_reloc_val;
389 1.1 skrll };
390 1.1 skrll
391 1.1 skrll static const struct cris_reloc_map cris_reloc_map [] =
392 1.1 skrll {
393 1.1 skrll { BFD_RELOC_NONE, R_CRIS_NONE },
394 1.1 skrll { BFD_RELOC_8, R_CRIS_8 },
395 1.1 skrll { BFD_RELOC_16, R_CRIS_16 },
396 1.1 skrll { BFD_RELOC_32, R_CRIS_32 },
397 1.1 skrll { BFD_RELOC_8_PCREL, R_CRIS_8_PCREL },
398 1.1 skrll { BFD_RELOC_16_PCREL, R_CRIS_16_PCREL },
399 1.1 skrll { BFD_RELOC_32_PCREL, R_CRIS_32_PCREL },
400 1.1 skrll { BFD_RELOC_VTABLE_INHERIT, R_CRIS_GNU_VTINHERIT },
401 1.1 skrll { BFD_RELOC_VTABLE_ENTRY, R_CRIS_GNU_VTENTRY },
402 1.1 skrll { BFD_RELOC_CRIS_COPY, R_CRIS_COPY },
403 1.1 skrll { BFD_RELOC_CRIS_GLOB_DAT, R_CRIS_GLOB_DAT },
404 1.1 skrll { BFD_RELOC_CRIS_JUMP_SLOT, R_CRIS_JUMP_SLOT },
405 1.1 skrll { BFD_RELOC_CRIS_RELATIVE, R_CRIS_RELATIVE },
406 1.1 skrll { BFD_RELOC_CRIS_16_GOT, R_CRIS_16_GOT },
407 1.1 skrll { BFD_RELOC_CRIS_32_GOT, R_CRIS_32_GOT },
408 1.1 skrll { BFD_RELOC_CRIS_16_GOTPLT, R_CRIS_16_GOTPLT },
409 1.1 skrll { BFD_RELOC_CRIS_32_GOTPLT, R_CRIS_32_GOTPLT },
410 1.1 skrll { BFD_RELOC_CRIS_32_GOTREL, R_CRIS_32_GOTREL },
411 1.1.1.2 christos { BFD_RELOC_CRIS_32_PLT_GOTREL, R_CRIS_32_PLT_GOTREL },
412 1.1.1.2 christos { BFD_RELOC_CRIS_32_PLT_PCREL, R_CRIS_32_PLT_PCREL },
413 1.1.1.2 christos { BFD_RELOC_CRIS_32_GOT_GD, R_CRIS_32_GOT_GD },
414 1.1.1.2 christos { BFD_RELOC_CRIS_16_GOT_GD, R_CRIS_16_GOT_GD },
415 1.1.1.2 christos { BFD_RELOC_CRIS_32_GD, R_CRIS_32_GD },
416 1.1.1.2 christos { BFD_RELOC_CRIS_DTP, R_CRIS_DTP },
417 1.1.1.2 christos { BFD_RELOC_CRIS_32_DTPREL, R_CRIS_32_DTPREL },
418 1.1.1.2 christos { BFD_RELOC_CRIS_16_DTPREL, R_CRIS_16_DTPREL },
419 1.1.1.2 christos { BFD_RELOC_CRIS_32_GOT_TPREL, R_CRIS_32_GOT_TPREL },
420 1.1.1.2 christos { BFD_RELOC_CRIS_16_GOT_TPREL, R_CRIS_16_GOT_TPREL },
421 1.1.1.2 christos { BFD_RELOC_CRIS_32_TPREL, R_CRIS_32_TPREL },
422 1.1.1.2 christos { BFD_RELOC_CRIS_16_TPREL, R_CRIS_16_TPREL },
423 1.1.1.2 christos { BFD_RELOC_CRIS_DTPMOD, R_CRIS_DTPMOD },
424 1.1 skrll { BFD_RELOC_CRIS_32_IE, R_CRIS_32_IE }
425 1.1 skrll };
426 1.1 skrll
427 1.1.1.3 christos static reloc_howto_type *
428 1.1.1.3 christos cris_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
429 1.1 skrll bfd_reloc_code_real_type code)
430 1.1 skrll {
431 1.1 skrll unsigned int i;
432 1.1 skrll
433 1.1 skrll for (i = 0; i < sizeof (cris_reloc_map) / sizeof (cris_reloc_map[0]); i++)
434 1.1 skrll if (cris_reloc_map [i].bfd_reloc_val == code)
435 1.1 skrll return & cris_elf_howto_table [cris_reloc_map[i].cris_reloc_val];
436 1.1 skrll
437 1.1 skrll return NULL;
438 1.1 skrll }
439 1.1 skrll
440 1.1 skrll static reloc_howto_type *
441 1.1 skrll cris_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
442 1.1 skrll {
443 1.1 skrll unsigned int i;
444 1.1 skrll
445 1.1 skrll for (i = 0;
446 1.1 skrll i < sizeof (cris_elf_howto_table) / sizeof (cris_elf_howto_table[0]);
447 1.1 skrll i++)
448 1.1 skrll if (cris_elf_howto_table[i].name != NULL
449 1.1 skrll && strcasecmp (cris_elf_howto_table[i].name, r_name) == 0)
450 1.1 skrll return &cris_elf_howto_table[i];
451 1.1 skrll
452 1.1 skrll return NULL;
453 1.1 skrll }
454 1.1 skrll
455 1.1 skrll /* Set the howto pointer for an CRIS ELF reloc. */
456 1.1 skrll
457 1.1.1.3 christos static void
458 1.1.1.3 christos cris_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED,
459 1.1.1.3 christos arelent * cache_ptr,
460 1.1 skrll Elf_Internal_Rela * dst)
461 1.1.1.2 christos {
462 1.1 skrll enum elf_cris_reloc_type r_type;
463 1.1 skrll
464 1.1.1.4 christos r_type = ELF32_R_TYPE (dst->r_info);
465 1.1.1.4 christos if (r_type >= R_CRIS_max)
466 1.1.1.6 christos {
467 1.1.1.4 christos /* xgettext:c-format */
468 1.1.1.4 christos _bfd_error_handler (_("%B: invalid CRIS reloc number: %d"), abfd, r_type);
469 1.1.1.4 christos r_type = 0;
470 1.1 skrll }
471 1.1 skrll cache_ptr->howto = & cris_elf_howto_table [r_type];
472 1.1 skrll }
473 1.1 skrll
474 1.1.1.3 christos bfd_reloc_status_type
475 1.1.1.3 christos cris_elf_pcrel_reloc (bfd *abfd ATTRIBUTE_UNUSED,
476 1.1.1.3 christos arelent *reloc_entry,
477 1.1.1.3 christos asymbol *symbol,
478 1.1.1.3 christos void * data ATTRIBUTE_UNUSED,
479 1.1.1.3 christos asection *input_section,
480 1.1.1.3 christos bfd *output_bfd,
481 1.1 skrll char **error_message ATTRIBUTE_UNUSED)
482 1.1 skrll {
483 1.1 skrll /* By default (using only bfd_elf_generic_reloc when linking to
484 1.1 skrll non-ELF formats) PC-relative relocs are relative to the beginning
485 1.1 skrll of the reloc. CRIS PC-relative relocs are relative to the position
486 1.1 skrll *after* the reloc because that's what pre-CRISv32 PC points to
487 1.1 skrll after reading an insn field with that reloc. (For CRISv32, PC is
488 1.1 skrll actually relative to the start of the insn, but we keep the old
489 1.1 skrll definition.) Still, we use as much generic machinery as we can.
490 1.1 skrll
491 1.1 skrll Only adjust when doing a final link. */
492 1.1 skrll if (output_bfd == (bfd *) NULL)
493 1.1 skrll reloc_entry->addend -= 1 << reloc_entry->howto->size;
494 1.1 skrll
495 1.1 skrll return
496 1.1 skrll bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
497 1.1 skrll input_section, output_bfd, error_message);
498 1.1 skrll }
499 1.1 skrll
500 1.1 skrll /* Support for core dump NOTE sections.
502 1.1 skrll The slightly unintuitive code layout is an attempt to keep at least
503 1.1 skrll some similarities with other ports, hoping to simplify general
504 1.1 skrll changes, while still keeping Linux/CRIS and Linux/CRISv32 code apart. */
505 1.1.1.3 christos
506 1.1 skrll static bfd_boolean
507 1.1 skrll cris_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
508 1.1 skrll {
509 1.1 skrll int offset;
510 1.1 skrll size_t size;
511 1.1 skrll
512 1.1 skrll if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
513 1.1 skrll switch (note->descsz)
514 1.1 skrll {
515 1.1 skrll default:
516 1.1 skrll return FALSE;
517 1.1 skrll
518 1.1.1.4 christos case 202: /* Linux/CRISv32 */
519 1.1 skrll /* pr_cursig */
520 1.1 skrll elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
521 1.1.1.4 christos
522 1.1 skrll /* pr_pid */
523 1.1 skrll elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 22);
524 1.1 skrll
525 1.1 skrll /* pr_reg */
526 1.1 skrll offset = 70;
527 1.1 skrll size = 128;
528 1.1 skrll
529 1.1 skrll break;
530 1.1 skrll }
531 1.1 skrll else
532 1.1 skrll switch (note->descsz)
533 1.1 skrll {
534 1.1 skrll default:
535 1.1 skrll return FALSE;
536 1.1 skrll
537 1.1.1.4 christos case 214: /* Linux/CRIS */
538 1.1 skrll /* pr_cursig */
539 1.1 skrll elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
540 1.1.1.4 christos
541 1.1 skrll /* pr_pid */
542 1.1 skrll elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 22);
543 1.1 skrll
544 1.1 skrll /* pr_reg */
545 1.1 skrll offset = 70;
546 1.1 skrll size = 140;
547 1.1 skrll
548 1.1 skrll break;
549 1.1 skrll }
550 1.1 skrll
551 1.1 skrll /* Make a ".reg/999" section. */
552 1.1 skrll return _bfd_elfcore_make_pseudosection (abfd, ".reg",
553 1.1 skrll size, note->descpos + offset);
554 1.1 skrll }
555 1.1.1.3 christos
556 1.1 skrll static bfd_boolean
557 1.1 skrll cris_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
558 1.1 skrll {
559 1.1 skrll if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
560 1.1 skrll switch (note->descsz)
561 1.1 skrll {
562 1.1 skrll default:
563 1.1 skrll return FALSE;
564 1.1.1.4 christos
565 1.1 skrll case 124: /* Linux/CRISv32 elf_prpsinfo */
566 1.1.1.4 christos elf_tdata (abfd)->core->program
567 1.1 skrll = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
568 1.1 skrll elf_tdata (abfd)->core->command
569 1.1 skrll = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
570 1.1 skrll }
571 1.1 skrll else
572 1.1 skrll switch (note->descsz)
573 1.1 skrll {
574 1.1 skrll default:
575 1.1 skrll return FALSE;
576 1.1.1.4 christos
577 1.1 skrll case 124: /* Linux/CRIS elf_prpsinfo */
578 1.1.1.4 christos elf_tdata (abfd)->core->program
579 1.1 skrll = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
580 1.1 skrll elf_tdata (abfd)->core->command
581 1.1 skrll = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
582 1.1 skrll }
583 1.1 skrll
584 1.1 skrll /* Note that for some reason, a spurious space is tacked
585 1.1 skrll onto the end of the args in some (at least one anyway)
586 1.1 skrll implementations, so strip it off if it exists. */
587 1.1.1.4 christos
588 1.1 skrll {
589 1.1 skrll char *command = elf_tdata (abfd)->core->command;
590 1.1 skrll int n = strlen (command);
591 1.1 skrll
592 1.1 skrll if (0 < n && command[n - 1] == ' ')
593 1.1 skrll command[n - 1] = '\0';
594 1.1 skrll }
595 1.1 skrll
596 1.1 skrll return TRUE;
597 1.1 skrll }
598 1.1 skrll
599 1.1 skrll /* The name of the dynamic interpreter. This is put in the .interp
601 1.1 skrll section. */
602 1.1 skrll
603 1.1 skrll #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
604 1.1 skrll
605 1.1 skrll /* The size in bytes of an entry in the procedure linkage table. */
606 1.1 skrll
607 1.1 skrll #define PLT_ENTRY_SIZE 20
608 1.1 skrll #define PLT_ENTRY_SIZE_V32 26
609 1.1 skrll
610 1.1 skrll /* The first entry in an absolute procedure linkage table looks like this. */
611 1.1 skrll
612 1.1 skrll static const bfd_byte elf_cris_plt0_entry[PLT_ENTRY_SIZE] =
613 1.1 skrll {
614 1.1 skrll 0xfc, 0xe1,
615 1.1 skrll 0x7e, 0x7e, /* push mof. */
616 1.1 skrll 0x7f, 0x0d, /* (dip [pc+]) */
617 1.1 skrll 0, 0, 0, 0, /* Replaced with address of .got + 4. */
618 1.1 skrll 0x30, 0x7a, /* move [...],mof */
619 1.1 skrll 0x7f, 0x0d, /* (dip [pc+]) */
620 1.1 skrll 0, 0, 0, 0, /* Replaced with address of .got + 8. */
621 1.1 skrll 0x30, 0x09 /* jump [...] */
622 1.1 skrll };
623 1.1 skrll
624 1.1 skrll static const bfd_byte elf_cris_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
625 1.1 skrll {
626 1.1 skrll 0x84, 0xe2, /* subq 4,$sp */
627 1.1 skrll 0x6f, 0xfe, /* move.d 0,$acr */
628 1.1 skrll 0, 0, 0, 0, /* Replaced by address of .got + 4. */
629 1.1 skrll 0x7e, 0x7a, /* move $mof,[$sp] */
630 1.1 skrll 0x3f, 0x7a, /* move [$acr],$mof */
631 1.1 skrll 0x04, 0xf2, /* addq 4,acr */
632 1.1 skrll 0x6f, 0xfa, /* move.d [$acr],$acr */
633 1.1 skrll 0xbf, 0x09, /* jump $acr */
634 1.1 skrll 0xb0, 0x05, /* nop */
635 1.1 skrll 0, 0 /* Pad out to 26 bytes. */
636 1.1 skrll };
637 1.1 skrll
638 1.1 skrll /* Subsequent entries in an absolute procedure linkage table look like
639 1.1 skrll this. */
640 1.1 skrll
641 1.1 skrll static const bfd_byte elf_cris_plt_entry[PLT_ENTRY_SIZE] =
642 1.1 skrll {
643 1.1 skrll 0x7f, 0x0d, /* (dip [pc+]) */
644 1.1 skrll 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
645 1.1 skrll 0x30, 0x09, /* jump [...] */
646 1.1 skrll 0x3f, 0x7e, /* move [pc+],mof */
647 1.1 skrll 0, 0, 0, 0, /* Replaced with offset into relocation table. */
648 1.1 skrll 0x2f, 0xfe, /* add.d [pc+],pc */
649 1.1 skrll 0xec, 0xff,
650 1.1 skrll 0xff, 0xff /* Replaced with offset to start of .plt. */
651 1.1 skrll };
652 1.1 skrll
653 1.1 skrll static const bfd_byte elf_cris_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
654 1.1 skrll {
655 1.1 skrll 0x6f, 0xfe, /* move.d 0,$acr */
656 1.1 skrll 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
657 1.1 skrll 0x6f, 0xfa, /* move.d [$acr],$acr */
658 1.1 skrll 0xbf, 0x09, /* jump $acr */
659 1.1 skrll 0xb0, 0x05, /* nop */
660 1.1 skrll 0x3f, 0x7e, /* move 0,mof */
661 1.1 skrll 0, 0, 0, 0, /* Replaced with offset into relocation table. */
662 1.1 skrll 0xbf, 0x0e, /* ba start_of_plt0_entry */
663 1.1 skrll 0, 0, 0, 0, /* Replaced with offset to plt0 entry. */
664 1.1 skrll 0xb0, 0x05 /* nop */
665 1.1 skrll };
666 1.1 skrll
667 1.1 skrll /* The first entry in a PIC procedure linkage table looks like this. */
668 1.1 skrll
669 1.1 skrll static const bfd_byte elf_cris_pic_plt0_entry[PLT_ENTRY_SIZE] =
670 1.1 skrll {
671 1.1 skrll 0xfc, 0xe1, 0x7e, 0x7e, /* push mof */
672 1.1 skrll 0x04, 0x01, 0x30, 0x7a, /* move [r0+4],mof */
673 1.1 skrll 0x08, 0x01, 0x30, 0x09, /* jump [r0+8] */
674 1.1 skrll 0, 0, 0, 0, 0, 0, 0, 0, /* Pad out to 20 bytes. */
675 1.1 skrll };
676 1.1 skrll
677 1.1 skrll static const bfd_byte elf_cris_pic_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
678 1.1 skrll {
679 1.1 skrll 0x84, 0xe2, /* subq 4,$sp */
680 1.1 skrll 0x04, 0x01, /* addoq 4,$r0,$acr */
681 1.1 skrll 0x7e, 0x7a, /* move $mof,[$sp] */
682 1.1 skrll 0x3f, 0x7a, /* move [$acr],$mof */
683 1.1 skrll 0x04, 0xf2, /* addq 4,$acr */
684 1.1 skrll 0x6f, 0xfa, /* move.d [$acr],$acr */
685 1.1 skrll 0xbf, 0x09, /* jump $acr */
686 1.1 skrll 0xb0, 0x05, /* nop */
687 1.1 skrll 0, 0, /* Pad out to 26 bytes. */
688 1.1 skrll 0, 0, 0, 0,
689 1.1 skrll 0, 0, 0, 0
690 1.1 skrll };
691 1.1 skrll
692 1.1 skrll /* Subsequent entries in a PIC procedure linkage table look like this. */
693 1.1 skrll
694 1.1 skrll static const bfd_byte elf_cris_pic_plt_entry[PLT_ENTRY_SIZE] =
695 1.1 skrll {
696 1.1 skrll 0x6f, 0x0d, /* (bdap [pc+].d,r0) */
697 1.1 skrll 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
698 1.1 skrll 0x30, 0x09, /* jump [...] */
699 1.1 skrll 0x3f, 0x7e, /* move [pc+],mof */
700 1.1 skrll 0, 0, 0, 0, /* Replaced with offset into relocation table. */
701 1.1 skrll 0x2f, 0xfe, /* add.d [pc+],pc */
702 1.1 skrll 0xec, 0xff, /* Replaced with offset to start of .plt. */
703 1.1 skrll 0xff, 0xff
704 1.1 skrll };
705 1.1 skrll
706 1.1 skrll static const bfd_byte elf_cris_pic_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
707 1.1 skrll {
708 1.1 skrll 0x6f, 0x0d, /* addo.d 0,$r0,$acr */
709 1.1 skrll 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
710 1.1 skrll 0x6f, 0xfa, /* move.d [$acr],$acr */
711 1.1 skrll 0xbf, 0x09, /* jump $acr */
712 1.1 skrll 0xb0, 0x05, /* nop */
713 1.1 skrll 0x3f, 0x7e, /* move relocoffs,$mof */
714 1.1 skrll 0, 0, 0, 0, /* Replaced with offset into relocation table. */
715 1.1 skrll 0xbf, 0x0e, /* ba start_of_plt */
716 1.1 skrll 0, 0, 0, 0, /* Replaced with offset to start of .plt. */
717 1.1 skrll 0xb0, 0x05 /* nop */
718 1.1 skrll };
719 1.1 skrll
720 1.1 skrll /* We copy elf32-m68k.c and elf32-i386.c for the basic linker hash bits
722 1.1 skrll (and most other PIC/shlib stuff). Check that we don't drift away
723 1.1 skrll without reason.
724 1.1 skrll
725 1.1 skrll The CRIS linker, like the m68k and i386 linkers (and probably the rest
726 1.1 skrll too) needs to keep track of the number of relocs that it decides to
727 1.1 skrll copy in check_relocs for each symbol. This is so that it can discard
728 1.1 skrll PC relative relocs if it doesn't need them when linking with
729 1.1 skrll -Bsymbolic. We store the information in a field extending the regular
730 1.1 skrll ELF linker hash table. */
731 1.1 skrll
732 1.1 skrll /* This structure keeps track of the number of PC relative relocs we have
733 1.1 skrll copied for a given symbol. */
734 1.1 skrll
735 1.1.1.2 christos struct elf_cris_pcrel_relocs_copied
736 1.1 skrll {
737 1.1 skrll /* Next section. */
738 1.1.1.2 christos struct elf_cris_pcrel_relocs_copied *next;
739 1.1 skrll
740 1.1 skrll /* A section in dynobj. */
741 1.1.1.2 christos asection *section;
742 1.1.1.2 christos
743 1.1.1.2 christos /* Number of relocs copied in this section. */
744 1.1 skrll bfd_size_type count;
745 1.1 skrll
746 1.1 skrll /* Example of reloc being copied, for message. */
747 1.1 skrll enum elf_cris_reloc_type r_type;
748 1.1 skrll };
749 1.1 skrll
750 1.1 skrll /* CRIS ELF linker hash entry. */
751 1.1 skrll
752 1.1 skrll struct elf_cris_link_hash_entry
753 1.1 skrll {
754 1.1 skrll struct elf_link_hash_entry root;
755 1.1 skrll
756 1.1 skrll /* Number of PC relative relocs copied for this symbol. */
757 1.1 skrll struct elf_cris_pcrel_relocs_copied *pcrel_relocs_copied;
758 1.1 skrll
759 1.1 skrll /* The GOTPLT references are CRIS-specific; the goal is to avoid having
760 1.1 skrll both a general GOT and a PLT-specific GOT entry for the same symbol,
761 1.1 skrll when it is referenced both as a function and as a function pointer.
762 1.1 skrll
763 1.1 skrll Number of GOTPLT references for a function. */
764 1.1 skrll bfd_signed_vma gotplt_refcount;
765 1.1 skrll
766 1.1 skrll /* Actual GOTPLT index for this symbol, if applicable, or zero if not
767 1.1.1.2 christos (zero is never used as an index). FIXME: We should be able to fold
768 1.1.1.2 christos this with gotplt_refcount in a union, like the got and plt unions in
769 1.1.1.2 christos elf_link_hash_entry. */
770 1.1.1.2 christos bfd_size_type gotplt_offset;
771 1.1.1.2 christos
772 1.1.1.2 christos /* The root.got.refcount is the sum of the regular reference counts
773 1.1.1.2 christos (this) and those members below. We have to keep a separate count
774 1.1.1.2 christos to track when we've found the first (or last) reference to a
775 1.1.1.2 christos regular got entry. The offset is in root.got.offset. */
776 1.1.1.2 christos bfd_signed_vma reg_got_refcount;
777 1.1.1.2 christos
778 1.1.1.2 christos /* Similar to the above, the number of reloc references to this
779 1.1.1.2 christos symbols that need a R_CRIS_32_TPREL slot. The offset is in
780 1.1.1.2 christos root.got.offset, because this and .dtp_refcount can't validly
781 1.1.1.2 christos happen when there's also a regular GOT entry; that's invalid
782 1.1.1.2 christos input for which an error is emitted. */
783 1.1.1.2 christos bfd_signed_vma tprel_refcount;
784 1.1.1.2 christos
785 1.1 skrll /* Similar to the above, the number of reloc references to this
786 1.1 skrll symbols that need a R_CRIS_DTP slot. The offset is in
787 1.1.1.3 christos root.got.offset; plus 4 if .tprel_refcount > 0. */
788 1.1.1.3 christos bfd_signed_vma dtp_refcount;
789 1.1.1.3 christos };
790 1.1.1.3 christos
791 1.1.1.3 christos static bfd_boolean
792 1.1.1.3 christos elf_cris_discard_excess_dso_dynamics (struct elf_cris_link_hash_entry *,
793 1.1.1.3 christos void * );
794 1.1.1.2 christos static bfd_boolean
795 1.1.1.2 christos elf_cris_discard_excess_program_dynamics (struct elf_cris_link_hash_entry *,
796 1.1.1.2 christos void *);
797 1.1.1.2 christos
798 1.1.1.2 christos /* The local_got_refcounts and local_got_offsets are a multiple of
799 1.1.1.2 christos LSNUM in size, namely LGOT_ALLOC_NELTS_FOR(LSNUM) (plus one for the
800 1.1.1.2 christos refcount for GOT itself, see code), with the summary / group offset
801 1.1.1.2 christos for local symbols located at offset N, reference counts for
802 1.1.1.2 christos ordinary (address) relocs at offset N + LSNUM, for R_CRIS_DTP
803 1.1.1.2 christos relocs at offset N + 2*LSNUM, and for R_CRIS_32_TPREL relocs at N +
804 1.1.1.2 christos 3*LSNUM. */
805 1.1.1.2 christos
806 1.1.1.2 christos #define LGOT_REG_NDX(x) ((x) + symtab_hdr->sh_info)
807 1.1 skrll #define LGOT_DTP_NDX(x) ((x) + 2 * symtab_hdr->sh_info)
808 1.1 skrll #define LGOT_TPREL_NDX(x) ((x) + 3 * symtab_hdr->sh_info)
809 1.1 skrll #define LGOT_ALLOC_NELTS_FOR(x) ((x) * 4)
810 1.1 skrll
811 1.1 skrll /* CRIS ELF linker hash table. */
812 1.1 skrll
813 1.1 skrll struct elf_cris_link_hash_table
814 1.1 skrll {
815 1.1 skrll struct elf_link_hash_table root;
816 1.1 skrll
817 1.1.1.2 christos /* We can't use the PLT offset and calculate to get the GOTPLT offset,
818 1.1.1.2 christos since we try and avoid creating GOTPLT:s when there's already a GOT.
819 1.1.1.2 christos Instead, we keep and update the next available index here. */
820 1.1.1.2 christos bfd_size_type next_gotplt_entry;
821 1.1.1.2 christos
822 1.1.1.2 christos /* The number of R_CRIS_32_DTPREL and R_CRIS_16_DTPREL that have
823 1.1.1.2 christos been seen for any input; if != 0, then the constant-offset
824 1.1 skrll R_CRIS_DTPMOD is needed for this DSO/executable. This turns
825 1.1 skrll negative at relocation, so that we don't need an extra flag for
826 1.1 skrll when the reloc is output. */
827 1.1 skrll bfd_signed_vma dtpmod_refcount;
828 1.1 skrll };
829 1.1 skrll
830 1.1 skrll /* Traverse a CRIS ELF linker hash table. */
831 1.1.1.2 christos
832 1.1 skrll #define elf_cris_link_hash_traverse(table, func, info) \
833 1.1 skrll (elf_link_hash_traverse \
834 1.1 skrll (&(table)->root, \
835 1.1 skrll (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
836 1.1 skrll (info)))
837 1.1.1.2 christos
838 1.1.1.2 christos /* Get the CRIS ELF linker hash table from a link_info structure. */
839 1.1.1.2 christos
840 1.1.1.2 christos #define elf_cris_hash_table(p) \
841 1.1.1.2 christos (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
842 1.1.1.2 christos == CRIS_ELF_DATA ? ((struct elf_cris_link_hash_table *) ((p)->hash)) : NULL)
843 1.1.1.2 christos
844 1.1.1.2 christos /* Get the CRIS ELF linker hash entry from a regular hash entry (the
845 1.1.1.2 christos "parent class"). The .root reference is just a simple type
846 1.1 skrll check on the argument. */
847 1.1 skrll
848 1.1 skrll #define elf_cris_hash_entry(p) \
849 1.1 skrll ((struct elf_cris_link_hash_entry *) (&(p)->root))
850 1.1.1.2 christos
851 1.1.1.2 christos /* Create an entry in a CRIS ELF linker hash table. */
852 1.1.1.2 christos
853 1.1 skrll static struct bfd_hash_entry *
854 1.1 skrll elf_cris_link_hash_newfunc (struct bfd_hash_entry *entry,
855 1.1 skrll struct bfd_hash_table *table,
856 1.1 skrll const char *string)
857 1.1 skrll {
858 1.1 skrll struct elf_cris_link_hash_entry *ret =
859 1.1 skrll (struct elf_cris_link_hash_entry *) entry;
860 1.1 skrll
861 1.1 skrll /* Allocate the structure if it has not already been allocated by a
862 1.1 skrll subclass. */
863 1.1 skrll if (ret == (struct elf_cris_link_hash_entry *) NULL)
864 1.1 skrll ret = ((struct elf_cris_link_hash_entry *)
865 1.1 skrll bfd_hash_allocate (table,
866 1.1 skrll sizeof (struct elf_cris_link_hash_entry)));
867 1.1 skrll if (ret == (struct elf_cris_link_hash_entry *) NULL)
868 1.1 skrll return (struct bfd_hash_entry *) ret;
869 1.1 skrll
870 1.1 skrll /* Call the allocation method of the superclass. */
871 1.1 skrll ret = ((struct elf_cris_link_hash_entry *)
872 1.1 skrll _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
873 1.1 skrll table, string));
874 1.1 skrll if (ret != (struct elf_cris_link_hash_entry *) NULL)
875 1.1.1.2 christos {
876 1.1.1.2 christos ret->pcrel_relocs_copied = NULL;
877 1.1.1.2 christos ret->gotplt_refcount = 0;
878 1.1 skrll ret->gotplt_offset = 0;
879 1.1 skrll ret->dtp_refcount = 0;
880 1.1 skrll ret->tprel_refcount = 0;
881 1.1 skrll ret->reg_got_refcount = 0;
882 1.1 skrll }
883 1.1 skrll
884 1.1 skrll return (struct bfd_hash_entry *) ret;
885 1.1 skrll }
886 1.1.1.2 christos
887 1.1 skrll /* Create a CRIS ELF linker hash table. */
888 1.1 skrll
889 1.1 skrll static struct bfd_link_hash_table *
890 1.1 skrll elf_cris_link_hash_table_create (bfd *abfd)
891 1.1.1.4 christos {
892 1.1 skrll struct elf_cris_link_hash_table *ret;
893 1.1 skrll bfd_size_type amt = sizeof (struct elf_cris_link_hash_table);
894 1.1 skrll
895 1.1 skrll ret = ((struct elf_cris_link_hash_table *) bfd_zmalloc (amt));
896 1.1 skrll if (ret == (struct elf_cris_link_hash_table *) NULL)
897 1.1.1.2 christos return NULL;
898 1.1.1.2 christos
899 1.1 skrll if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
900 1.1 skrll elf_cris_link_hash_newfunc,
901 1.1 skrll sizeof (struct elf_cris_link_hash_entry),
902 1.1 skrll CRIS_ELF_DATA))
903 1.1 skrll {
904 1.1 skrll free (ret);
905 1.1 skrll return NULL;
906 1.1 skrll }
907 1.1 skrll
908 1.1 skrll /* Initialize to skip over the first three entries in the gotplt; they
909 1.1 skrll are used for run-time symbol evaluation. */
910 1.1 skrll ret->next_gotplt_entry = 12;
911 1.1 skrll
912 1.1 skrll return &ret->root.root;
913 1.1 skrll }
914 1.1 skrll
915 1.1.1.3 christos /* Perform a single relocation. By default we use the standard BFD
917 1.1.1.6 christos routines, with a few tweaks. */
918 1.1.1.6 christos
919 1.1.1.3 christos static bfd_reloc_status_type
920 1.1.1.6 christos cris_final_link_relocate (reloc_howto_type * howto,
921 1.1 skrll bfd * input_bfd,
922 1.1 skrll asection * input_section,
923 1.1.1.2 christos bfd_byte * contents,
924 1.1 skrll Elf_Internal_Rela * rel,
925 1.1 skrll bfd_vma relocation)
926 1.1 skrll {
927 1.1 skrll bfd_reloc_status_type r;
928 1.1.1.2 christos enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
929 1.1 skrll
930 1.1 skrll /* PC-relative relocations are relative to the position *after*
931 1.1 skrll the reloc. Note that for R_CRIS_8_PCREL the adjustment is
932 1.1 skrll not a single byte, since PC must be 16-bit-aligned. */
933 1.1 skrll switch (r_type)
934 1.1 skrll {
935 1.1 skrll /* Check that the 16-bit GOT relocs are positive. */
936 1.1 skrll case R_CRIS_16_GOTPLT:
937 1.1 skrll case R_CRIS_16_GOT:
938 1.1 skrll if ((bfd_signed_vma) relocation < 0)
939 1.1 skrll return bfd_reloc_overflow;
940 1.1 skrll break;
941 1.1 skrll
942 1.1 skrll case R_CRIS_32_PLT_PCREL:
943 1.1 skrll case R_CRIS_32_PCREL:
944 1.1 skrll relocation -= 2;
945 1.1 skrll /* Fall through. */
946 1.1 skrll case R_CRIS_8_PCREL:
947 1.1 skrll case R_CRIS_16_PCREL:
948 1.1 skrll relocation -= 2;
949 1.1 skrll break;
950 1.1 skrll
951 1.1 skrll default:
952 1.1 skrll break;
953 1.1 skrll }
954 1.1 skrll
955 1.1 skrll r = _bfd_final_link_relocate (howto, input_bfd, input_section,
956 1.1.1.2 christos contents, rel->r_offset,
957 1.1.1.2 christos relocation, rel->r_addend);
958 1.1.1.2 christos return r;
959 1.1.1.2 christos }
960 1.1.1.2 christos
961 1.1.1.2 christos
963 1.1.1.2 christos /* The number of errors left before we stop outputting reloc-specific
964 1.1 skrll explanatory messages. By coincidence, this works nicely together
965 1.1 skrll with the default number of messages you'll get from LD about
966 1.1 skrll "relocation truncated to fit" messages before you get an
967 1.1 skrll "additional relocation overflows omitted from the output". */
968 1.1.1.2 christos static int additional_relocation_error_msg_count = 10;
969 1.1.1.2 christos
970 1.1.1.2 christos /* Relocate an CRIS ELF section. See elf32-fr30.c, from where this was
971 1.1.1.2 christos copied, for further comments. */
972 1.1.1.2 christos
973 1.1.1.2 christos static bfd_boolean
974 1.1.1.2 christos cris_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
975 1.1.1.2 christos struct bfd_link_info *info,
976 1.1 skrll bfd *input_bfd,
977 1.1.1.2 christos asection *input_section,
978 1.1 skrll bfd_byte *contents,
979 1.1 skrll Elf_Internal_Rela *relocs,
980 1.1 skrll Elf_Internal_Sym *local_syms,
981 1.1 skrll asection **local_sections)
982 1.1 skrll {
983 1.1 skrll struct elf_cris_link_hash_table * htab;
984 1.1 skrll bfd *dynobj;
985 1.1 skrll Elf_Internal_Shdr *symtab_hdr;
986 1.1 skrll struct elf_link_hash_entry **sym_hashes;
987 1.1.1.2 christos bfd_vma *local_got_offsets;
988 1.1.1.2 christos asection *sgot;
989 1.1.1.2 christos asection *splt;
990 1.1.1.2 christos asection *sreloc;
991 1.1.1.2 christos Elf_Internal_Rela *rel;
992 1.1 skrll Elf_Internal_Rela *relend;
993 1.1.1.6 christos asection *srelgot;
994 1.1 skrll
995 1.1 skrll htab = elf_cris_hash_table (info);
996 1.1 skrll if (htab == NULL)
997 1.1 skrll return FALSE;
998 1.1 skrll
999 1.1 skrll dynobj = htab->root.dynobj;
1000 1.1 skrll local_got_offsets = elf_local_got_offsets (input_bfd);
1001 1.1 skrll symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1002 1.1.1.2 christos sym_hashes = elf_sym_hashes (input_bfd);
1003 1.1 skrll relend = relocs + input_section->reloc_count;
1004 1.1 skrll
1005 1.1 skrll sgot = NULL;
1006 1.1.1.6 christos splt = NULL;
1007 1.1.1.6 christos sreloc = NULL;
1008 1.1 skrll srelgot = NULL;
1009 1.1 skrll
1010 1.1 skrll if (dynobj != NULL)
1011 1.1 skrll {
1012 1.1 skrll splt = htab->root.splt;
1013 1.1 skrll sgot = htab->root.sgot;
1014 1.1 skrll }
1015 1.1 skrll
1016 1.1 skrll for (rel = relocs; rel < relend; rel ++)
1017 1.1 skrll {
1018 1.1 skrll reloc_howto_type *howto;
1019 1.1 skrll unsigned long r_symndx;
1020 1.1.1.2 christos Elf_Internal_Sym *sym;
1021 1.1.1.6 christos asection *sec;
1022 1.1 skrll struct elf_link_hash_entry *h;
1023 1.1 skrll bfd_vma relocation;
1024 1.1 skrll bfd_reloc_status_type r;
1025 1.1 skrll const char *symname = NULL;
1026 1.1 skrll enum elf_cris_reloc_type r_type;
1027 1.1 skrll bfd_boolean resolved_to_zero;
1028 1.1 skrll
1029 1.1 skrll r_type = ELF32_R_TYPE (rel->r_info);
1030 1.1 skrll
1031 1.1 skrll if ( r_type == R_CRIS_GNU_VTINHERIT
1032 1.1 skrll || r_type == R_CRIS_GNU_VTENTRY)
1033 1.1 skrll continue;
1034 1.1 skrll
1035 1.1 skrll r_symndx = ELF32_R_SYM (rel->r_info);
1036 1.1 skrll howto = cris_elf_howto_table + r_type;
1037 1.1 skrll h = NULL;
1038 1.1 skrll sym = NULL;
1039 1.1 skrll sec = NULL;
1040 1.1 skrll
1041 1.1 skrll if (r_symndx < symtab_hdr->sh_info)
1042 1.1 skrll {
1043 1.1 skrll sym = local_syms + r_symndx;
1044 1.1 skrll sec = local_sections [r_symndx];
1045 1.1 skrll relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1046 1.1 skrll
1047 1.1 skrll symname = (bfd_elf_string_from_elf_section
1048 1.1.1.4 christos (input_bfd, symtab_hdr->sh_link, sym->st_name));
1049 1.1 skrll if (symname == NULL)
1050 1.1 skrll symname = bfd_section_name (input_bfd, sec);
1051 1.1 skrll }
1052 1.1 skrll else
1053 1.1 skrll {
1054 1.1.1.4 christos bfd_boolean warned, ignored;
1055 1.1 skrll bfd_boolean unresolved_reloc;
1056 1.1.1.2 christos
1057 1.1.1.2 christos RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1058 1.1 skrll r_symndx, symtab_hdr, sym_hashes,
1059 1.1 skrll h, sec, relocation,
1060 1.1 skrll unresolved_reloc, warned, ignored);
1061 1.1 skrll
1062 1.1 skrll symname = h->root.root.string;
1063 1.1 skrll
1064 1.1 skrll if (unresolved_reloc
1065 1.1 skrll /* Perhaps we should detect the cases that
1066 1.1 skrll sec->output_section is expected to be NULL like i386 and
1067 1.1 skrll m68k, but apparently (and according to elfxx-ia64.c) all
1068 1.1 skrll valid cases are where the symbol is defined in a shared
1069 1.1 skrll object which we link dynamically against. This includes
1070 1.1 skrll PLT relocs for which we've created a PLT entry and other
1071 1.1 skrll relocs for which we're prepared to create dynamic
1072 1.1 skrll relocations.
1073 1.1 skrll
1074 1.1 skrll For now, new situations cause us to just err when
1075 1.1 skrll sec->output_offset is NULL but the object with the symbol
1076 1.1 skrll is *not* dynamically linked against. Thus this will
1077 1.1 skrll automatically remind us so we can see if there are other
1078 1.1 skrll valid cases we need to revisit. */
1079 1.1 skrll && (sec->owner->flags & DYNAMIC) != 0)
1080 1.1 skrll relocation = 0;
1081 1.1 skrll
1082 1.1 skrll else if (h->root.type == bfd_link_hash_defined
1083 1.1 skrll || h->root.type == bfd_link_hash_defweak)
1084 1.1 skrll {
1085 1.1 skrll /* Here follow the cases where the relocation value must
1086 1.1 skrll be zero (or when further handling is simplified when
1087 1.1 skrll zero). I can't claim to understand the various
1088 1.1 skrll conditions and they weren't described in the files
1089 1.1 skrll where I copied them from (elf32-m68k.c and
1090 1.1 skrll elf32-i386.c), but let's mention examples of where
1091 1.1 skrll they happen. FIXME: Perhaps define and use a
1092 1.1 skrll dynamic_symbol_p function like ia64.
1093 1.1 skrll
1094 1.1 skrll - When creating a shared library, we can have an
1095 1.1 skrll ordinary relocation for a symbol defined in a shared
1096 1.1 skrll library (perhaps the one we create). We then make
1097 1.1.1.4 christos the relocation value zero, as the value seen now will
1098 1.1.1.4 christos be added into the relocation addend in this shared
1099 1.1 skrll library, but must be handled only at dynamic-link
1100 1.1 skrll time. FIXME: Not sure this example covers the
1101 1.1 skrll h->elf_link_hash_flags test, though it's there in
1102 1.1 skrll other targets. */
1103 1.1 skrll if (bfd_link_pic (info)
1104 1.1 skrll && ((!SYMBOLIC_BIND (info, h) && h->dynindx != -1)
1105 1.1 skrll || !h->def_regular)
1106 1.1 skrll && (input_section->flags & SEC_ALLOC) != 0
1107 1.1 skrll && (r_type == R_CRIS_8
1108 1.1.1.4 christos || r_type == R_CRIS_16
1109 1.1.1.3 christos || r_type == R_CRIS_32
1110 1.1.1.3 christos || r_type == R_CRIS_8_PCREL
1111 1.1.1.3 christos || r_type == R_CRIS_16_PCREL
1112 1.1.1.3 christos || r_type == R_CRIS_32_PCREL))
1113 1.1 skrll relocation = 0;
1114 1.1 skrll else if (!bfd_link_relocatable (info) && unresolved_reloc
1115 1.1.1.6 christos && (_bfd_elf_section_offset (output_bfd, info,
1116 1.1 skrll input_section,
1117 1.1 skrll rel->r_offset)
1118 1.1 skrll != (bfd_vma) -1))
1119 1.1 skrll {
1120 1.1 skrll _bfd_error_handler
1121 1.1 skrll /* xgettext:c-format */
1122 1.1 skrll (_("%B, section %A: unresolvable relocation %s against symbol `%s'"),
1123 1.1 skrll input_bfd,
1124 1.1 skrll input_section,
1125 1.1 skrll cris_elf_howto_table[r_type].name,
1126 1.1 skrll symname);
1127 1.1.1.3 christos bfd_set_error (bfd_error_bad_value);
1128 1.1.1.2 christos return FALSE;
1129 1.1.1.3 christos }
1130 1.1 skrll }
1131 1.1.1.4 christos }
1132 1.1 skrll
1133 1.1 skrll if (sec != NULL && discarded_section (sec))
1134 1.1.1.6 christos RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
1135 1.1.1.6 christos rel, 1, relend, howto, 0, contents);
1136 1.1.1.6 christos
1137 1.1 skrll if (bfd_link_relocatable (info))
1138 1.1 skrll continue;
1139 1.1 skrll
1140 1.1 skrll resolved_to_zero = (h != NULL
1141 1.1 skrll && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
1142 1.1 skrll
1143 1.1 skrll switch (r_type)
1144 1.1 skrll {
1145 1.1 skrll case R_CRIS_16_GOTPLT:
1146 1.1 skrll case R_CRIS_32_GOTPLT:
1147 1.1 skrll /* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT,
1148 1.1 skrll but we require a PLT, and the PLT handling will take care of
1149 1.1.1.6 christos filling in the PLT-specific GOT entry. For the GOT offset,
1150 1.1 skrll calculate it as we do when filling it in for the .got.plt
1151 1.1 skrll section. If we don't have a PLT, punt to GOT handling. */
1152 1.1 skrll if (h != NULL
1153 1.1 skrll && ((struct elf_cris_link_hash_entry *) h)->gotplt_offset != 0)
1154 1.1 skrll {
1155 1.1 skrll asection *sgotplt = htab->root.sgotplt;
1156 1.1 skrll bfd_vma got_offset;
1157 1.1 skrll
1158 1.1 skrll BFD_ASSERT (h->dynindx != -1);
1159 1.1 skrll BFD_ASSERT (sgotplt != NULL);
1160 1.1 skrll
1161 1.1 skrll got_offset
1162 1.1 skrll = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset;
1163 1.1 skrll
1164 1.1 skrll relocation = got_offset;
1165 1.1 skrll break;
1166 1.1 skrll }
1167 1.1 skrll
1168 1.1 skrll /* We didn't make a PLT entry for this symbol. Maybe everything is
1169 1.1 skrll folded into the GOT. Other than folding, this happens when
1170 1.1 skrll statically linking PIC code, or when using -Bsymbolic. Check
1171 1.1 skrll that we instead have a GOT entry as done for us by
1172 1.1 skrll elf_cris_adjust_dynamic_symbol, and drop through into the
1173 1.1.1.4 christos ordinary GOT cases. This must not happen for the
1174 1.1 skrll executable, because any reference it does to a function
1175 1.1 skrll that is satisfied by a DSO must generate a PLT. We assume
1176 1.1 skrll these call-specific relocs don't address non-functions. */
1177 1.1 skrll if (h != NULL
1178 1.1.1.6 christos && (h->got.offset == (bfd_vma) -1
1179 1.1 skrll || (!bfd_link_pic (info)
1180 1.1.1.6 christos && !(h->def_regular
1181 1.1 skrll || (!h->def_dynamic
1182 1.1 skrll && h->root.type == bfd_link_hash_undefweak)))))
1183 1.1.1.6 christos {
1184 1.1 skrll _bfd_error_handler
1185 1.1 skrll ((h->got.offset == (bfd_vma) -1)
1186 1.1 skrll /* xgettext:c-format */
1187 1.1 skrll ? _("%B, section %A: No PLT nor GOT for relocation %s"
1188 1.1 skrll " against symbol `%s'")
1189 1.1 skrll /* xgettext:c-format */
1190 1.1 skrll : _("%B, section %A: No PLT for relocation %s"
1191 1.1 skrll " against symbol `%s'"),
1192 1.1 skrll input_bfd,
1193 1.1 skrll input_section,
1194 1.1 skrll cris_elf_howto_table[r_type].name,
1195 1.1 skrll (symname != NULL && symname[0] != '\0'
1196 1.1 skrll ? symname : _("[whose name is lost]")));
1197 1.1 skrll
1198 1.1 skrll /* FIXME: Perhaps blaming input is not the right thing to
1199 1.1 skrll do; this is probably an internal error. But it is true
1200 1.1 skrll that we didn't like that particular input. */
1201 1.1 skrll bfd_set_error (bfd_error_bad_value);
1202 1.1 skrll return FALSE;
1203 1.1 skrll }
1204 1.1 skrll /* Fall through. */
1205 1.1 skrll
1206 1.1 skrll /* The size of the actual relocation is not used here; we only
1207 1.1 skrll fill in the GOT table here. */
1208 1.1 skrll case R_CRIS_16_GOT:
1209 1.1 skrll case R_CRIS_32_GOT:
1210 1.1 skrll {
1211 1.1 skrll bfd_vma off;
1212 1.1 skrll
1213 1.1 skrll /* Note that despite using RELA relocations, the .got contents
1214 1.1 skrll is always filled in with the link-relative relocation
1215 1.1 skrll value; the addend. */
1216 1.1 skrll
1217 1.1.1.4 christos if (h != NULL)
1218 1.1 skrll {
1219 1.1 skrll off = h->got.offset;
1220 1.1 skrll BFD_ASSERT (off != (bfd_vma) -1);
1221 1.1.1.4 christos
1222 1.1.1.4 christos if (!elf_hash_table (info)->dynamic_sections_created
1223 1.1 skrll || (! bfd_link_pic (info)
1224 1.1 skrll && (h->def_regular
1225 1.1.1.4 christos || h->type == STT_FUNC
1226 1.1 skrll || h->needs_plt))
1227 1.1 skrll || (bfd_link_pic (info)
1228 1.1 skrll && (SYMBOLIC_BIND (info, h) || h->dynindx == -1)
1229 1.1 skrll && h->def_regular))
1230 1.1.1.4 christos {
1231 1.1 skrll /* This wasn't checked above for ! bfd_link_pic (info), but
1232 1.1 skrll must hold there if we get here; the symbol must
1233 1.1 skrll be defined in the regular program or be undefweak
1234 1.1 skrll or be a function or otherwise need a PLT. */
1235 1.1 skrll BFD_ASSERT (!elf_hash_table (info)->dynamic_sections_created
1236 1.1 skrll || bfd_link_pic (info)
1237 1.1 skrll || h->def_regular
1238 1.1 skrll || h->type == STT_FUNC
1239 1.1 skrll || h->needs_plt
1240 1.1 skrll || h->root.type == bfd_link_hash_undefweak);
1241 1.1 skrll
1242 1.1 skrll /* This is actually a static link, or it is a
1243 1.1 skrll -Bsymbolic link and the symbol is defined locally,
1244 1.1 skrll or is undefweak, or the symbol was forced to be
1245 1.1 skrll local because of a version file, or we're not
1246 1.1 skrll creating a dynamic object. We must initialize this
1247 1.1 skrll entry in the global offset table. Since the offset
1248 1.1 skrll must always be a multiple of 4, we use the least
1249 1.1 skrll significant bit to record whether we have
1250 1.1 skrll initialized it already.
1251 1.1 skrll
1252 1.1 skrll If this GOT entry should be runtime-initialized, we
1253 1.1 skrll will create a .rela.got relocation entry to
1254 1.1 skrll initialize the value. This is done in the
1255 1.1 skrll finish_dynamic_symbol routine. */
1256 1.1 skrll if ((off & 1) != 0)
1257 1.1 skrll off &= ~1;
1258 1.1 skrll else
1259 1.1 skrll {
1260 1.1 skrll bfd_put_32 (output_bfd, relocation,
1261 1.1 skrll sgot->contents + off);
1262 1.1 skrll h->got.offset |= 1;
1263 1.1 skrll }
1264 1.1 skrll }
1265 1.1 skrll }
1266 1.1 skrll else
1267 1.1 skrll {
1268 1.1 skrll BFD_ASSERT (local_got_offsets != NULL
1269 1.1 skrll && local_got_offsets[r_symndx] != (bfd_vma) -1);
1270 1.1 skrll
1271 1.1 skrll off = local_got_offsets[r_symndx];
1272 1.1 skrll
1273 1.1 skrll /* The offset must always be a multiple of 4. We use
1274 1.1 skrll the least significant bit to record whether we have
1275 1.1 skrll already generated the necessary reloc. */
1276 1.1.1.4 christos if ((off & 1) != 0)
1277 1.1 skrll off &= ~1;
1278 1.1 skrll else
1279 1.1 skrll {
1280 1.1 skrll bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1281 1.1.1.6 christos
1282 1.1.1.2 christos if (bfd_link_pic (info))
1283 1.1 skrll {
1284 1.1 skrll Elf_Internal_Rela outrel;
1285 1.1 skrll bfd_byte *loc;
1286 1.1 skrll
1287 1.1 skrll srelgot = htab->root.srelgot;
1288 1.1 skrll BFD_ASSERT (srelgot != NULL);
1289 1.1.1.2 christos
1290 1.1.1.2 christos outrel.r_offset = (sgot->output_section->vma
1291 1.1 skrll + sgot->output_offset
1292 1.1 skrll + off);
1293 1.1 skrll outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1294 1.1 skrll outrel.r_addend = relocation;
1295 1.1 skrll loc = srelgot->contents;
1296 1.1 skrll loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1297 1.1 skrll bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1298 1.1 skrll }
1299 1.1 skrll
1300 1.1 skrll local_got_offsets[r_symndx] |= 1;
1301 1.1 skrll }
1302 1.1 skrll }
1303 1.1 skrll
1304 1.1 skrll relocation = sgot->output_offset + off;
1305 1.1 skrll if (rel->r_addend != 0)
1306 1.1.1.6 christos {
1307 1.1.1.6 christos /* We can't do anything for a relocation which is against
1308 1.1.1.6 christos a symbol *plus offset*. GOT holds relocations for
1309 1.1 skrll symbols. Make this an error; the compiler isn't
1310 1.1 skrll allowed to pass us these kinds of things. */
1311 1.1 skrll if (h == NULL)
1312 1.1 skrll _bfd_error_handler
1313 1.1 skrll /* xgettext:c-format */
1314 1.1 skrll (_("%B, section %A: relocation %s with non-zero addend %Ld"
1315 1.1.1.6 christos " against local symbol"),
1316 1.1.1.6 christos input_bfd,
1317 1.1.1.6 christos input_section,
1318 1.1 skrll cris_elf_howto_table[r_type].name,
1319 1.1 skrll rel->r_addend);
1320 1.1 skrll else
1321 1.1 skrll _bfd_error_handler
1322 1.1 skrll /* xgettext:c-format */
1323 1.1 skrll (_("%B, section %A: relocation %s with non-zero addend %Ld"
1324 1.1 skrll " against symbol `%s'"),
1325 1.1 skrll input_bfd,
1326 1.1 skrll input_section,
1327 1.1 skrll cris_elf_howto_table[r_type].name,
1328 1.1 skrll rel->r_addend,
1329 1.1 skrll symname[0] != '\0' ? symname : _("[whose name is lost]"));
1330 1.1 skrll
1331 1.1 skrll bfd_set_error (bfd_error_bad_value);
1332 1.1 skrll return FALSE;
1333 1.1 skrll }
1334 1.1 skrll }
1335 1.1 skrll break;
1336 1.1 skrll
1337 1.1.1.4 christos case R_CRIS_32_GOTREL:
1338 1.1 skrll /* This relocation must only be performed against local symbols.
1339 1.1 skrll It's also ok when we link a program and the symbol is either
1340 1.1 skrll defined in an ordinary (non-DSO) object or is undefined weak. */
1341 1.1 skrll if (h != NULL
1342 1.1.1.6 christos && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1343 1.1.1.6 christos && !(!bfd_link_pic (info)
1344 1.1 skrll && (h->def_regular
1345 1.1 skrll || (!h->def_dynamic
1346 1.1 skrll && h->root.type == bfd_link_hash_undefweak))))
1347 1.1 skrll {
1348 1.1 skrll _bfd_error_handler
1349 1.1 skrll /* xgettext:c-format */
1350 1.1 skrll (_("%B, section %A: relocation %s is"
1351 1.1 skrll " not allowed for global symbol: `%s'"),
1352 1.1 skrll input_bfd,
1353 1.1 skrll input_section,
1354 1.1 skrll cris_elf_howto_table[r_type].name,
1355 1.1 skrll symname);
1356 1.1 skrll bfd_set_error (bfd_error_bad_value);
1357 1.1 skrll return FALSE;
1358 1.1 skrll }
1359 1.1.1.6 christos
1360 1.1.1.6 christos /* This can happen if we get a link error with the input ELF
1361 1.1 skrll variant mismatching the output variant. Emit an error so
1362 1.1 skrll it's noticed if it happens elsewhere. */
1363 1.1 skrll if (sgot == NULL)
1364 1.1 skrll {
1365 1.1 skrll _bfd_error_handler
1366 1.1 skrll /* xgettext:c-format */
1367 1.1 skrll (_("%B, section %A: relocation %s with no GOT created"),
1368 1.1 skrll input_bfd,
1369 1.1 skrll input_section,
1370 1.1 skrll cris_elf_howto_table[r_type].name);
1371 1.1 skrll bfd_set_error (bfd_error_bad_value);
1372 1.1 skrll return FALSE;
1373 1.1 skrll }
1374 1.1 skrll
1375 1.1 skrll /* This relocation is like a PC-relative one, except the
1376 1.1 skrll reference point is the location of GOT. Note that
1377 1.1 skrll sgot->output_offset is not involved in this calculation. We
1378 1.1 skrll always want the start of entire .got section, not the
1379 1.1 skrll position after the reserved header. */
1380 1.1 skrll relocation -= sgot->output_section->vma;
1381 1.1 skrll break;
1382 1.1 skrll
1383 1.1 skrll case R_CRIS_32_PLT_PCREL:
1384 1.1 skrll /* Relocation is to the entry for this symbol in the
1385 1.1 skrll procedure linkage table. */
1386 1.1 skrll
1387 1.1 skrll /* Resolve a PLT_PCREL reloc against a local symbol directly,
1388 1.1 skrll without using the procedure linkage table. */
1389 1.1 skrll if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1390 1.1 skrll break;
1391 1.1 skrll
1392 1.1 skrll if (h->plt.offset == (bfd_vma) -1
1393 1.1 skrll || splt == NULL)
1394 1.1 skrll {
1395 1.1 skrll /* We didn't make a PLT entry for this symbol. This
1396 1.1 skrll happens when statically linking PIC code, or when
1397 1.1 skrll using -Bsymbolic. */
1398 1.1 skrll break;
1399 1.1 skrll }
1400 1.1 skrll
1401 1.1 skrll relocation = (splt->output_section->vma
1402 1.1 skrll + splt->output_offset
1403 1.1 skrll + h->plt.offset);
1404 1.1 skrll break;
1405 1.1 skrll
1406 1.1 skrll case R_CRIS_32_PLT_GOTREL:
1407 1.1 skrll /* Like R_CRIS_32_PLT_PCREL, but the reference point is the
1408 1.1 skrll start of the .got section. See also comment at
1409 1.1 skrll R_CRIS_32_GOT. */
1410 1.1 skrll relocation -= sgot->output_section->vma;
1411 1.1 skrll
1412 1.1 skrll /* Resolve a PLT_GOTREL reloc against a local symbol directly,
1413 1.1 skrll without using the procedure linkage table. */
1414 1.1 skrll if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1415 1.1 skrll break;
1416 1.1 skrll
1417 1.1 skrll if (h->plt.offset == (bfd_vma) -1
1418 1.1 skrll || splt == NULL)
1419 1.1 skrll {
1420 1.1 skrll /* We didn't make a PLT entry for this symbol. This
1421 1.1 skrll happens when statically linking PIC code, or when
1422 1.1 skrll using -Bsymbolic. */
1423 1.1 skrll break;
1424 1.1 skrll }
1425 1.1 skrll
1426 1.1 skrll relocation = (splt->output_section->vma
1427 1.1 skrll + splt->output_offset
1428 1.1 skrll + h->plt.offset
1429 1.1 skrll - sgot->output_section->vma);
1430 1.1.1.2 christos break;
1431 1.1.1.2 christos
1432 1.1 skrll case R_CRIS_8_PCREL:
1433 1.1 skrll case R_CRIS_16_PCREL:
1434 1.1 skrll case R_CRIS_32_PCREL:
1435 1.1 skrll /* If the symbol was local, we need no shlib-specific handling. */
1436 1.1 skrll if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1437 1.1 skrll || h->dynindx == -1)
1438 1.1.1.4 christos break;
1439 1.1.1.6 christos
1440 1.1.1.2 christos /* Fall through. */
1441 1.1 skrll case R_CRIS_8:
1442 1.1 skrll case R_CRIS_16:
1443 1.1 skrll case R_CRIS_32:
1444 1.1 skrll if (bfd_link_pic (info)
1445 1.1.1.4 christos && !resolved_to_zero
1446 1.1.1.2 christos && r_symndx != STN_UNDEF
1447 1.1 skrll && (input_section->flags & SEC_ALLOC) != 0
1448 1.1 skrll && ((r_type != R_CRIS_8_PCREL
1449 1.1 skrll && r_type != R_CRIS_16_PCREL
1450 1.1 skrll && r_type != R_CRIS_32_PCREL)
1451 1.1 skrll || (!SYMBOLIC_BIND (info, h)
1452 1.1 skrll || (h != NULL && !h->def_regular))))
1453 1.1 skrll {
1454 1.1 skrll Elf_Internal_Rela outrel;
1455 1.1 skrll bfd_byte *loc;
1456 1.1 skrll bfd_boolean skip, relocate;
1457 1.1 skrll
1458 1.1.1.2 christos /* When generating a shared object, these relocations
1459 1.1.1.2 christos are copied into the output file to be resolved at run
1460 1.1.1.2 christos time. */
1461 1.1.1.2 christos
1462 1.1 skrll if (sreloc == NULL)
1463 1.1 skrll {
1464 1.1 skrll sreloc = _bfd_elf_get_dynamic_reloc_section
1465 1.1 skrll (dynobj, input_section, /*rela?*/ TRUE);
1466 1.1 skrll /* The section should have been created in cris_elf_check_relocs,
1467 1.1 skrll but that function will not be called for objects which fail in
1468 1.1 skrll cris_elf_merge_private_bfd_data. */
1469 1.1 skrll if (sreloc == NULL)
1470 1.1 skrll {
1471 1.1 skrll bfd_set_error (bfd_error_bad_value);
1472 1.1 skrll return FALSE;
1473 1.1 skrll }
1474 1.1 skrll }
1475 1.1 skrll
1476 1.1 skrll skip = FALSE;
1477 1.1 skrll relocate = FALSE;
1478 1.1.1.2 christos
1479 1.1.1.2 christos outrel.r_offset =
1480 1.1.1.2 christos _bfd_elf_section_offset (output_bfd, info, input_section,
1481 1.1.1.2 christos rel->r_offset);
1482 1.1.1.2 christos if (outrel.r_offset == (bfd_vma) -1)
1483 1.1.1.2 christos skip = TRUE;
1484 1.1.1.2 christos else if (outrel.r_offset == (bfd_vma) -2
1485 1.1.1.2 christos /* For now, undefined weak symbols with non-default
1486 1.1.1.2 christos visibility (yielding 0), like exception info for
1487 1.1.1.2 christos discarded sections, will get a R_CRIS_NONE
1488 1.1 skrll relocation rather than no relocation, because we
1489 1.1 skrll notice too late that the symbol doesn't need a
1490 1.1 skrll relocation. */
1491 1.1 skrll || (h != NULL
1492 1.1 skrll && h->root.type == bfd_link_hash_undefweak
1493 1.1 skrll && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT))
1494 1.1 skrll skip = TRUE, relocate = TRUE;
1495 1.1 skrll outrel.r_offset += (input_section->output_section->vma
1496 1.1 skrll + input_section->output_offset);
1497 1.1.1.4 christos
1498 1.1 skrll if (skip)
1499 1.1 skrll memset (&outrel, 0, sizeof outrel);
1500 1.1 skrll /* h->dynindx may be -1 if the symbol was marked to
1501 1.1 skrll become local. */
1502 1.1 skrll else if (h != NULL
1503 1.1 skrll && ((!SYMBOLIC_BIND (info, h) && h->dynindx != -1)
1504 1.1 skrll || !h->def_regular))
1505 1.1 skrll {
1506 1.1 skrll BFD_ASSERT (h->dynindx != -1);
1507 1.1 skrll outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1508 1.1 skrll outrel.r_addend = relocation + rel->r_addend;
1509 1.1 skrll }
1510 1.1 skrll else
1511 1.1 skrll {
1512 1.1 skrll outrel.r_addend = relocation + rel->r_addend;
1513 1.1 skrll
1514 1.1 skrll if (r_type == R_CRIS_32)
1515 1.1 skrll {
1516 1.1 skrll relocate = TRUE;
1517 1.1 skrll outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1518 1.1 skrll }
1519 1.1 skrll else
1520 1.1 skrll {
1521 1.1 skrll long indx;
1522 1.1 skrll
1523 1.1 skrll if (bfd_is_abs_section (sec))
1524 1.1 skrll indx = 0;
1525 1.1 skrll else if (sec == NULL || sec->owner == NULL)
1526 1.1 skrll {
1527 1.1 skrll bfd_set_error (bfd_error_bad_value);
1528 1.1 skrll return FALSE;
1529 1.1 skrll }
1530 1.1 skrll else
1531 1.1 skrll {
1532 1.1 skrll asection *osec;
1533 1.1 skrll
1534 1.1 skrll /* We are turning this relocation into one
1535 1.1 skrll against a section symbol. It would be
1536 1.1 skrll proper to subtract the symbol's value,
1537 1.1 skrll osec->vma, from the emitted reloc addend,
1538 1.1 skrll but ld.so expects buggy relocs. */
1539 1.1 skrll osec = sec->output_section;
1540 1.1 skrll indx = elf_section_data (osec)->dynindx;
1541 1.1 skrll if (indx == 0)
1542 1.1 skrll {
1543 1.1 skrll osec = htab->root.text_index_section;
1544 1.1 skrll indx = elf_section_data (osec)->dynindx;
1545 1.1 skrll }
1546 1.1 skrll BFD_ASSERT (indx != 0);
1547 1.1 skrll }
1548 1.1 skrll
1549 1.1 skrll outrel.r_info = ELF32_R_INFO (indx, r_type);
1550 1.1 skrll }
1551 1.1 skrll }
1552 1.1.1.6 christos
1553 1.1.1.6 christos loc = sreloc->contents;
1554 1.1 skrll loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1555 1.1 skrll bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1556 1.1 skrll
1557 1.1 skrll /* This reloc will be computed at runtime, so there's no
1558 1.1 skrll need to do anything now, except for R_CRIS_32 relocations
1559 1.1.1.2 christos that have been turned into R_CRIS_RELATIVE. */
1560 1.1.1.2 christos if (!relocate)
1561 1.1.1.2 christos continue;
1562 1.1.1.2 christos }
1563 1.1.1.2 christos
1564 1.1.1.2 christos break;
1565 1.1.1.2 christos
1566 1.1.1.2 christos case R_CRIS_16_DTPREL:
1567 1.1.1.2 christos case R_CRIS_32_DTPREL:
1568 1.1.1.2 christos /* This relocation must only be performed against local
1569 1.1.1.2 christos symbols, or to sections that are not loadable. It's also
1570 1.1.1.4 christos ok when we link a program and the symbol is defined in an
1571 1.1.1.2 christos ordinary (non-DSO) object (if it's undefined there, we've
1572 1.1.1.2 christos already seen an error). */
1573 1.1.1.2 christos if (h != NULL
1574 1.1.1.6 christos && (input_section->flags & SEC_ALLOC) != 0
1575 1.1.1.2 christos && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1576 1.1.1.2 christos && (bfd_link_pic (info)
1577 1.1.1.6 christos || (!h->def_regular
1578 1.1.1.2 christos && h->root.type != bfd_link_hash_undefined)))
1579 1.1.1.2 christos {
1580 1.1.1.6 christos _bfd_error_handler
1581 1.1.1.6 christos ((h->root.type == bfd_link_hash_undefined)
1582 1.1.1.2 christos /* We shouldn't get here for GCC-emitted code. */
1583 1.1.1.2 christos /* xgettext:c-format */
1584 1.1.1.2 christos ? _("%B, section %A: relocation %s has an undefined"
1585 1.1.1.2 christos " reference to `%s', perhaps a declaration mixup?")
1586 1.1.1.2 christos /* xgettext:c-format */
1587 1.1.1.2 christos : _("%B, section %A: relocation %s is"
1588 1.1.1.2 christos " not allowed for `%s', a global symbol with default"
1589 1.1.1.2 christos " visibility, perhaps a declaration mixup?"),
1590 1.1.1.2 christos input_bfd,
1591 1.1.1.2 christos input_section,
1592 1.1.1.2 christos cris_elf_howto_table[r_type].name,
1593 1.1.1.2 christos symname != NULL && symname[0] != '\0'
1594 1.1.1.2 christos ? symname : _("[whose name is lost]"));
1595 1.1.1.2 christos bfd_set_error (bfd_error_bad_value);
1596 1.1.1.2 christos return FALSE;
1597 1.1.1.2 christos }
1598 1.1.1.2 christos
1599 1.1.1.2 christos BFD_ASSERT ((input_section->flags & SEC_ALLOC) == 0
1600 1.1.1.2 christos || htab->dtpmod_refcount != 0);
1601 1.1.1.2 christos
1602 1.1.1.2 christos /* Fill in a R_CRIS_DTPMOD reloc at offset 3 if we haven't
1603 1.1.1.2 christos already done so. Note that we do this in .got.plt, not
1604 1.1.1.6 christos in .got, as .got.plt contains the first part, still the
1605 1.1.1.2 christos reloc is against .got, because the linker script directs
1606 1.1.1.2 christos (is required to direct) them both into .got. */
1607 1.1.1.4 christos if (htab->dtpmod_refcount > 0
1608 1.1.1.2 christos && (input_section->flags & SEC_ALLOC) != 0)
1609 1.1.1.2 christos {
1610 1.1.1.2 christos asection *sgotplt = htab->root.sgotplt;
1611 1.1.1.2 christos BFD_ASSERT (sgotplt != NULL);
1612 1.1.1.6 christos
1613 1.1.1.2 christos if (bfd_link_pic (info))
1614 1.1.1.2 christos {
1615 1.1.1.2 christos Elf_Internal_Rela outrel;
1616 1.1.1.2 christos bfd_byte *loc;
1617 1.1.1.2 christos
1618 1.1.1.2 christos srelgot = htab->root.srelgot;
1619 1.1.1.2 christos BFD_ASSERT (srelgot != NULL);
1620 1.1.1.2 christos loc = srelgot->contents;
1621 1.1.1.2 christos loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1622 1.1.1.2 christos
1623 1.1.1.2 christos bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 12);
1624 1.1.1.2 christos bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1625 1.1.1.2 christos outrel.r_offset = (sgotplt->output_section->vma
1626 1.1.1.2 christos + sgotplt->output_offset
1627 1.1.1.2 christos + 12);
1628 1.1.1.2 christos outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTPMOD);
1629 1.1.1.2 christos outrel.r_addend = 0;
1630 1.1.1.2 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1631 1.1.1.2 christos }
1632 1.1.1.2 christos else
1633 1.1.1.2 christos {
1634 1.1.1.2 christos /* For an executable, the GOT entry contents is known. */
1635 1.1.1.2 christos bfd_put_32 (output_bfd, (bfd_vma) 1, sgotplt->contents + 12);
1636 1.1.1.2 christos bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1637 1.1.1.2 christos }
1638 1.1.1.2 christos
1639 1.1.1.2 christos /* Reverse the sign to mark that we've emitted the
1640 1.1.1.2 christos required GOT entry. */
1641 1.1.1.2 christos htab->dtpmod_refcount = - htab->dtpmod_refcount;
1642 1.1.1.2 christos }
1643 1.1.1.2 christos
1644 1.1.1.2 christos /* The relocation is the offset from the start of the module
1645 1.1.1.4 christos TLS block to the (local) symbol. */
1646 1.1.1.2 christos relocation -= elf_hash_table (info)->tls_sec == NULL
1647 1.1.1.2 christos ? 0 : elf_hash_table (info)->tls_sec->vma;
1648 1.1.1.2 christos break;
1649 1.1.1.2 christos
1650 1.1.1.2 christos case R_CRIS_32_GD:
1651 1.1.1.2 christos if (bfd_link_pic (info))
1652 1.1.1.2 christos {
1653 1.1.1.2 christos bfd_set_error (bfd_error_invalid_operation);
1654 1.1.1.2 christos
1655 1.1.1.2 christos /* We've already informed in cris_elf_check_relocs that
1656 1.1.1.2 christos this is an error. */
1657 1.1.1.2 christos return FALSE;
1658 1.1.1.2 christos }
1659 1.1.1.2 christos /* Fall through. */
1660 1.1.1.2 christos
1661 1.1.1.2 christos case R_CRIS_16_GOT_GD:
1662 1.1.1.2 christos case R_CRIS_32_GOT_GD:
1663 1.1.1.6 christos if (rel->r_addend != 0)
1664 1.1.1.6 christos {
1665 1.1.1.6 christos /* We can't do anything for a relocation which is against a
1666 1.1.1.2 christos symbol *plus offset*. The GOT holds relocations for
1667 1.1.1.2 christos symbols. Make this an error; the compiler isn't allowed
1668 1.1.1.2 christos to pass us these kinds of things. */
1669 1.1.1.2 christos _bfd_error_handler
1670 1.1.1.2 christos /* xgettext:c-format */
1671 1.1.1.2 christos (_("%B, section %A: relocation %s with non-zero addend %Ld"
1672 1.1.1.2 christos " against symbol `%s'"),
1673 1.1.1.2 christos input_bfd,
1674 1.1.1.2 christos input_section,
1675 1.1.1.2 christos cris_elf_howto_table[r_type].name,
1676 1.1.1.2 christos rel->r_addend,
1677 1.1.1.4 christos symname[0] != '\0' ? symname : _("[whose name is lost]"));
1678 1.1.1.2 christos
1679 1.1.1.2 christos bfd_set_error (bfd_error_bad_value);
1680 1.1.1.2 christos return FALSE;
1681 1.1.1.2 christos }
1682 1.1.1.2 christos
1683 1.1.1.2 christos if (!bfd_link_pic (info)
1684 1.1.1.2 christos && (h == NULL || h->def_regular || ELF_COMMON_DEF_P (h)))
1685 1.1.1.2 christos {
1686 1.1.1.2 christos /* Known contents of the GOT. */
1687 1.1.1.2 christos bfd_vma off;
1688 1.1.1.2 christos
1689 1.1.1.2 christos /* The symbol is defined in the program, so just write
1690 1.1.1.2 christos (1, known_tpoffset) into the GOT. */
1691 1.1.1.2 christos relocation -= elf_hash_table (info)->tls_sec->vma;
1692 1.1.1.2 christos
1693 1.1.1.2 christos if (h != NULL)
1694 1.1.1.2 christos {
1695 1.1.1.2 christos off = elf_cris_hash_entry (h)->tprel_refcount > 0
1696 1.1.1.2 christos ? h->got.offset + 4 : h->got.offset;
1697 1.1.1.2 christos }
1698 1.1.1.2 christos else
1699 1.1.1.2 christos {
1700 1.1.1.2 christos off = local_got_offsets[r_symndx];
1701 1.1.1.2 christos if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1702 1.1.1.2 christos off += 4;
1703 1.1.1.2 christos }
1704 1.1.1.2 christos
1705 1.1.1.2 christos /* We use bit 1 of the offset as a flag for GOT entry with
1706 1.1.1.2 christos the R_CRIS_DTP reloc, setting it when we've emitted the
1707 1.1.1.2 christos GOT entry and reloc. Bit 0 is used for R_CRIS_32_TPREL
1708 1.1.1.2 christos relocs. */
1709 1.1.1.2 christos if ((off & 2) == 0)
1710 1.1.1.2 christos {
1711 1.1.1.2 christos off &= ~3;
1712 1.1.1.2 christos
1713 1.1.1.2 christos if (h != NULL)
1714 1.1.1.2 christos h->got.offset |= 2;
1715 1.1.1.2 christos else
1716 1.1.1.2 christos local_got_offsets[r_symndx] |= 2;
1717 1.1.1.2 christos
1718 1.1.1.2 christos bfd_put_32 (output_bfd, 1, sgot->contents + off);
1719 1.1.1.2 christos bfd_put_32 (output_bfd, relocation, sgot->contents + off + 4);
1720 1.1.1.2 christos }
1721 1.1.1.2 christos else
1722 1.1.1.2 christos off &= ~3;
1723 1.1.1.2 christos
1724 1.1.1.2 christos relocation = sgot->output_offset + off
1725 1.1.1.2 christos + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1726 1.1.1.2 christos }
1727 1.1.1.2 christos else
1728 1.1.1.2 christos {
1729 1.1.1.2 christos /* Not all parts of the GOT entry are known; emit a real
1730 1.1.1.2 christos relocation. */
1731 1.1.1.2 christos bfd_vma off;
1732 1.1.1.2 christos
1733 1.1.1.2 christos if (h != NULL)
1734 1.1.1.2 christos off = elf_cris_hash_entry (h)->tprel_refcount > 0
1735 1.1.1.2 christos ? h->got.offset + 4 : h->got.offset;
1736 1.1.1.2 christos else
1737 1.1.1.2 christos {
1738 1.1.1.2 christos off = local_got_offsets[r_symndx];
1739 1.1.1.2 christos if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1740 1.1.1.2 christos off += 4;
1741 1.1.1.2 christos }
1742 1.1.1.2 christos
1743 1.1.1.2 christos /* See above re bit 1 and bit 0 usage. */
1744 1.1.1.2 christos if ((off & 2) == 0)
1745 1.1.1.2 christos {
1746 1.1.1.2 christos Elf_Internal_Rela outrel;
1747 1.1.1.2 christos bfd_byte *loc;
1748 1.1.1.2 christos
1749 1.1.1.2 christos off &= ~3;
1750 1.1.1.2 christos
1751 1.1.1.2 christos if (h != NULL)
1752 1.1.1.2 christos h->got.offset |= 2;
1753 1.1.1.2 christos else
1754 1.1.1.2 christos local_got_offsets[r_symndx] |= 2;
1755 1.1.1.2 christos
1756 1.1.1.6 christos /* Clear the target contents of the GOT (just as a
1757 1.1.1.2 christos gesture; it's already cleared on allocation): this
1758 1.1.1.2 christos relocation is not like the other dynrelocs. */
1759 1.1.1.2 christos bfd_put_32 (output_bfd, 0, sgot->contents + off);
1760 1.1.1.2 christos bfd_put_32 (output_bfd, 0, sgot->contents + off + 4);
1761 1.1.1.2 christos
1762 1.1.1.2 christos srelgot = htab->root.srelgot;
1763 1.1.1.2 christos BFD_ASSERT (srelgot != NULL);
1764 1.1.1.2 christos
1765 1.1.1.2 christos if (h != NULL && h->dynindx != -1)
1766 1.1.1.2 christos {
1767 1.1.1.2 christos outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_DTP);
1768 1.1.1.2 christos relocation = 0;
1769 1.1.1.2 christos }
1770 1.1.1.2 christos else
1771 1.1.1.2 christos {
1772 1.1.1.2 christos outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTP);
1773 1.1.1.2 christos
1774 1.1.1.2 christos /* NULL if we had an error. */
1775 1.1.1.2 christos relocation -= elf_hash_table (info)->tls_sec == NULL
1776 1.1.1.2 christos ? 0 : elf_hash_table (info)->tls_sec->vma;
1777 1.1.1.2 christos }
1778 1.1.1.2 christos
1779 1.1.1.2 christos outrel.r_offset = (sgot->output_section->vma
1780 1.1.1.2 christos + sgot->output_offset
1781 1.1.1.2 christos + off);
1782 1.1.1.2 christos outrel.r_addend = relocation;
1783 1.1.1.2 christos loc = srelgot->contents;
1784 1.1.1.2 christos loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1785 1.1.1.2 christos
1786 1.1.1.2 christos /* NULL if we had an error. */
1787 1.1.1.2 christos if (srelgot->contents != NULL)
1788 1.1.1.2 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1789 1.1.1.2 christos }
1790 1.1.1.2 christos else
1791 1.1.1.2 christos off &= ~3;
1792 1.1.1.2 christos
1793 1.1.1.2 christos relocation = sgot->output_offset + off
1794 1.1.1.2 christos + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1795 1.1.1.2 christos }
1796 1.1.1.2 christos
1797 1.1.1.4 christos /* The GOT-relative offset to the GOT entry is the
1798 1.1.1.2 christos relocation, or for R_CRIS_32_GD, the actual address of
1799 1.1.1.2 christos the GOT entry. */
1800 1.1.1.2 christos break;
1801 1.1.1.2 christos
1802 1.1.1.2 christos case R_CRIS_32_IE:
1803 1.1.1.2 christos if (bfd_link_pic (info))
1804 1.1.1.2 christos {
1805 1.1.1.2 christos bfd_set_error (bfd_error_invalid_operation);
1806 1.1.1.2 christos
1807 1.1.1.2 christos /* We've already informed in cris_elf_check_relocs that
1808 1.1.1.2 christos this is an error. */
1809 1.1.1.2 christos return FALSE;
1810 1.1.1.2 christos }
1811 1.1.1.2 christos /* Fall through. */
1812 1.1.1.2 christos
1813 1.1.1.2 christos case R_CRIS_32_GOT_TPREL:
1814 1.1.1.2 christos case R_CRIS_16_GOT_TPREL:
1815 1.1.1.2 christos if (rel->r_addend != 0)
1816 1.1.1.6 christos {
1817 1.1.1.6 christos /* We can't do anything for a relocation which is
1818 1.1.1.6 christos against a symbol *plus offset*. GOT holds
1819 1.1.1.2 christos relocations for symbols. Make this an error; the
1820 1.1.1.2 christos compiler isn't allowed to pass us these kinds of
1821 1.1.1.2 christos things. */
1822 1.1.1.2 christos _bfd_error_handler
1823 1.1.1.2 christos /* xgettext:c-format */
1824 1.1.1.2 christos (_("%B, section %A: relocation %s with non-zero addend %Ld"
1825 1.1.1.2 christos " against symbol `%s'"),
1826 1.1.1.2 christos input_bfd,
1827 1.1.1.2 christos input_section,
1828 1.1.1.2 christos cris_elf_howto_table[r_type].name,
1829 1.1.1.4 christos rel->r_addend,
1830 1.1.1.3 christos symname[0] != '\0' ? symname : _("[whose name is lost]"));
1831 1.1.1.2 christos bfd_set_error (bfd_error_bad_value);
1832 1.1.1.2 christos return FALSE;
1833 1.1.1.2 christos }
1834 1.1.1.2 christos
1835 1.1.1.2 christos if (!bfd_link_pic (info)
1836 1.1.1.2 christos && (h == NULL || h->def_regular || ELF_COMMON_DEF_P (h)))
1837 1.1.1.2 christos {
1838 1.1.1.2 christos /* Known contents of the GOT. */
1839 1.1.1.2 christos bfd_vma off;
1840 1.1.1.2 christos
1841 1.1.1.2 christos /* The symbol is defined in the program, so just write
1842 1.1.1.2 christos the -prog_tls_size+known_tpoffset into the GOT. */
1843 1.1.1.2 christos relocation -= elf_hash_table (info)->tls_sec->vma;
1844 1.1.1.2 christos relocation -= elf_hash_table (info)->tls_size;
1845 1.1.1.2 christos
1846 1.1.1.2 christos if (h != NULL)
1847 1.1.1.2 christos off = h->got.offset;
1848 1.1.1.2 christos else
1849 1.1.1.2 christos off = local_got_offsets[r_symndx];
1850 1.1.1.2 christos
1851 1.1.1.2 christos /* Bit 0 is used to mark whether we've emitted the required
1852 1.1.1.2 christos entry (and if needed R_CRIS_32_TPREL reloc). Bit 1
1853 1.1.1.2 christos is used similarly for R_CRIS_DTP, see above. */
1854 1.1.1.2 christos if ((off & 1) == 0)
1855 1.1.1.2 christos {
1856 1.1.1.2 christos off &= ~3;
1857 1.1.1.2 christos
1858 1.1.1.2 christos if (h != NULL)
1859 1.1.1.2 christos h->got.offset |= 1;
1860 1.1.1.2 christos else
1861 1.1.1.2 christos local_got_offsets[r_symndx] |= 1;
1862 1.1.1.2 christos
1863 1.1.1.2 christos bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1864 1.1.1.2 christos }
1865 1.1.1.2 christos else
1866 1.1.1.2 christos off &= ~3;
1867 1.1.1.2 christos
1868 1.1.1.2 christos relocation = sgot->output_offset + off
1869 1.1.1.2 christos + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
1870 1.1.1.2 christos }
1871 1.1.1.2 christos else
1872 1.1.1.2 christos {
1873 1.1.1.2 christos /* Emit a real relocation. */
1874 1.1.1.2 christos bfd_vma off;
1875 1.1.1.2 christos
1876 1.1.1.2 christos if (h != NULL)
1877 1.1.1.2 christos off = h->got.offset;
1878 1.1.1.2 christos else
1879 1.1.1.2 christos off = local_got_offsets[r_symndx];
1880 1.1.1.2 christos
1881 1.1.1.2 christos /* See above re usage of bit 0 and 1. */
1882 1.1.1.2 christos if ((off & 1) == 0)
1883 1.1.1.2 christos {
1884 1.1.1.2 christos Elf_Internal_Rela outrel;
1885 1.1.1.2 christos bfd_byte *loc;
1886 1.1.1.2 christos
1887 1.1.1.2 christos off &= ~3;
1888 1.1.1.6 christos
1889 1.1.1.2 christos if (h != NULL)
1890 1.1.1.2 christos h->got.offset |= 1;
1891 1.1.1.2 christos else
1892 1.1.1.2 christos local_got_offsets[r_symndx] |= 1;
1893 1.1.1.2 christos
1894 1.1.1.2 christos srelgot = htab->root.srelgot;
1895 1.1.1.2 christos BFD_ASSERT (srelgot != NULL);
1896 1.1.1.2 christos
1897 1.1.1.2 christos if (h != NULL && h->dynindx != -1)
1898 1.1.1.2 christos {
1899 1.1.1.2 christos outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_32_TPREL);
1900 1.1.1.2 christos relocation = 0;
1901 1.1.1.2 christos }
1902 1.1.1.2 christos else
1903 1.1.1.2 christos {
1904 1.1.1.2 christos outrel.r_info = ELF32_R_INFO (0, R_CRIS_32_TPREL);
1905 1.1.1.2 christos
1906 1.1.1.2 christos /* NULL if we had an error. */
1907 1.1.1.2 christos relocation -= elf_hash_table (info)->tls_sec == NULL
1908 1.1.1.2 christos ? 0 : elf_hash_table (info)->tls_sec->vma;
1909 1.1.1.2 christos }
1910 1.1.1.2 christos
1911 1.1.1.2 christos /* Just "define" the initial contents in some
1912 1.1.1.2 christos semi-logical way. */
1913 1.1.1.2 christos bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1914 1.1.1.2 christos
1915 1.1.1.2 christos outrel.r_offset = (sgot->output_section->vma
1916 1.1.1.2 christos + sgot->output_offset
1917 1.1.1.2 christos + off);
1918 1.1.1.2 christos outrel.r_addend = relocation;
1919 1.1.1.2 christos loc = srelgot->contents;
1920 1.1.1.2 christos loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1921 1.1.1.2 christos /* NULL if we had an error. */
1922 1.1.1.2 christos if (srelgot->contents != NULL)
1923 1.1.1.2 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1924 1.1.1.2 christos }
1925 1.1.1.2 christos else
1926 1.1.1.2 christos off &= ~3;
1927 1.1.1.2 christos
1928 1.1.1.2 christos relocation = sgot->output_offset + off
1929 1.1.1.2 christos + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
1930 1.1.1.2 christos }
1931 1.1.1.2 christos
1932 1.1.1.2 christos /* The GOT-relative offset to the GOT entry is the relocation,
1933 1.1.1.2 christos or for R_CRIS_32_GD, the actual address of the GOT entry. */
1934 1.1.1.4 christos break;
1935 1.1.1.2 christos
1936 1.1.1.2 christos case R_CRIS_16_TPREL:
1937 1.1.1.2 christos case R_CRIS_32_TPREL:
1938 1.1.1.2 christos /* This relocation must only be performed against symbols
1939 1.1.1.2 christos defined in an ordinary (non-DSO) object. */
1940 1.1.1.2 christos if (bfd_link_pic (info))
1941 1.1.1.2 christos {
1942 1.1.1.2 christos bfd_set_error (bfd_error_invalid_operation);
1943 1.1.1.2 christos
1944 1.1.1.2 christos /* We've already informed in cris_elf_check_relocs that
1945 1.1.1.2 christos this is an error. */
1946 1.1.1.2 christos return FALSE;
1947 1.1.1.2 christos }
1948 1.1.1.2 christos
1949 1.1.1.2 christos if (h != NULL
1950 1.1.1.6 christos && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1951 1.1.1.6 christos && !(h->def_regular || ELF_COMMON_DEF_P (h))
1952 1.1.1.2 christos /* If it's undefined, then an error message has already
1953 1.1.1.2 christos been emitted. */
1954 1.1.1.2 christos && h->root.type != bfd_link_hash_undefined)
1955 1.1.1.2 christos {
1956 1.1.1.2 christos _bfd_error_handler
1957 1.1.1.2 christos /* xgettext:c-format */
1958 1.1.1.2 christos (_("%B, section %A: relocation %s is"
1959 1.1.1.2 christos " not allowed for symbol: `%s'"
1960 1.1.1.2 christos " which is defined outside the program,"
1961 1.1.1.2 christos " perhaps a declaration mixup?"),
1962 1.1.1.2 christos input_bfd,
1963 1.1.1.2 christos input_section,
1964 1.1.1.2 christos cris_elf_howto_table[r_type].name,
1965 1.1.1.2 christos symname);
1966 1.1.1.2 christos bfd_set_error (bfd_error_bad_value);
1967 1.1.1.2 christos return FALSE;
1968 1.1.1.2 christos }
1969 1.1.1.2 christos
1970 1.1.1.2 christos /* NULL if we had an error. */
1971 1.1.1.2 christos relocation -= elf_hash_table (info)->tls_sec == NULL
1972 1.1.1.2 christos ? 0
1973 1.1.1.2 christos : (elf_hash_table (info)->tls_sec->vma
1974 1.1.1.2 christos + elf_hash_table (info)->tls_size);
1975 1.1.1.2 christos
1976 1.1 skrll /* The TLS-relative offset is the relocation. */
1977 1.1 skrll break;
1978 1.1 skrll
1979 1.1 skrll default:
1980 1.1 skrll BFD_FAIL ();
1981 1.1 skrll return FALSE;
1982 1.1 skrll }
1983 1.1 skrll
1984 1.1 skrll r = cris_final_link_relocate (howto, input_bfd, input_section,
1985 1.1 skrll contents, rel, relocation);
1986 1.1 skrll
1987 1.1 skrll if (r != bfd_reloc_ok)
1988 1.1.1.5 christos {
1989 1.1 skrll const char * msg = (const char *) NULL;
1990 1.1 skrll
1991 1.1.1.2 christos switch (r)
1992 1.1.1.2 christos {
1993 1.1.1.2 christos case bfd_reloc_overflow:
1994 1.1.1.2 christos (*info->callbacks->reloc_overflow)
1995 1.1.1.2 christos (info, (h ? &h->root : NULL), symname, howto->name,
1996 1.1.1.2 christos (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
1997 1.1.1.2 christos if (additional_relocation_error_msg_count > 0)
1998 1.1.1.2 christos {
1999 1.1.1.2 christos additional_relocation_error_msg_count--;
2000 1.1.1.2 christos switch (r_type)
2001 1.1.1.2 christos {
2002 1.1.1.2 christos case R_CRIS_16_GOTPLT:
2003 1.1.1.2 christos case R_CRIS_16_GOT:
2004 1.1.1.6 christos
2005 1.1.1.2 christos /* Not just TLS is involved here, so we make
2006 1.1.1.2 christos generation and message depend on -fPIC/-fpic
2007 1.1.1.2 christos only. */
2008 1.1.1.2 christos case R_CRIS_16_GOT_TPREL:
2009 1.1.1.2 christos case R_CRIS_16_GOT_GD:
2010 1.1.1.2 christos _bfd_error_handler
2011 1.1.1.6 christos (_("(too many global variables for -fpic:"
2012 1.1.1.2 christos " recompile with -fPIC)"));
2013 1.1.1.2 christos break;
2014 1.1.1.2 christos
2015 1.1.1.2 christos case R_CRIS_16_TPREL:
2016 1.1.1.2 christos case R_CRIS_16_DTPREL:
2017 1.1.1.2 christos _bfd_error_handler
2018 1.1.1.2 christos (_("(thread-local data too big for -fpic or"
2019 1.1.1.2 christos " -msmall-tls: recompile with -fPIC or"
2020 1.1.1.2 christos " -mno-small-tls)"));
2021 1.1.1.2 christos break;
2022 1.1 skrll
2023 1.1 skrll /* No known cause for overflow for other relocs. */
2024 1.1 skrll default:
2025 1.1.1.5 christos break;
2026 1.1.1.5 christos }
2027 1.1 skrll }
2028 1.1 skrll break;
2029 1.1 skrll
2030 1.1 skrll case bfd_reloc_undefined:
2031 1.1 skrll (*info->callbacks->undefined_symbol)
2032 1.1 skrll (info, symname, input_bfd, input_section, rel->r_offset, TRUE);
2033 1.1 skrll break;
2034 1.1 skrll
2035 1.1 skrll case bfd_reloc_outofrange:
2036 1.1 skrll msg = _("internal error: out of range error");
2037 1.1 skrll break;
2038 1.1 skrll
2039 1.1 skrll case bfd_reloc_notsupported:
2040 1.1 skrll msg = _("internal error: unsupported relocation error");
2041 1.1 skrll break;
2042 1.1 skrll
2043 1.1 skrll case bfd_reloc_dangerous:
2044 1.1 skrll msg = _("internal error: dangerous relocation");
2045 1.1 skrll break;
2046 1.1 skrll
2047 1.1.1.5 christos default:
2048 1.1.1.5 christos msg = _("internal error: unknown error");
2049 1.1 skrll break;
2050 1.1 skrll }
2051 1.1 skrll
2052 1.1 skrll if (msg)
2053 1.1 skrll (*info->callbacks->warning) (info, msg, symname, input_bfd,
2054 1.1 skrll input_section, rel->r_offset);
2055 1.1 skrll }
2056 1.1 skrll }
2057 1.1 skrll
2058 1.1 skrll return TRUE;
2059 1.1.1.2 christos }
2060 1.1.1.2 christos
2061 1.1.1.2 christos /* Finish up dynamic symbol handling. We set the contents of various
2063 1.1 skrll dynamic sections here. */
2064 1.1.1.2 christos
2065 1.1 skrll static bfd_boolean
2066 1.1 skrll elf_cris_finish_dynamic_symbol (bfd *output_bfd,
2067 1.1 skrll struct bfd_link_info *info,
2068 1.1 skrll struct elf_link_hash_entry *h,
2069 1.1 skrll Elf_Internal_Sym *sym)
2070 1.1 skrll {
2071 1.1 skrll struct elf_cris_link_hash_table * htab;
2072 1.1 skrll
2073 1.1 skrll /* Where in the plt entry to put values. */
2074 1.1 skrll int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16;
2075 1.1 skrll
2076 1.1 skrll /* What offset to add to the distance to the first PLT entry for the
2077 1.1 skrll value at plt_off3. */
2078 1.1 skrll int plt_off3_value_bias = 4;
2079 1.1 skrll
2080 1.1.1.2 christos /* Where in the PLT entry the call-dynlink-stub is (happens to be same
2081 1.1.1.2 christos for PIC and non-PIC for v32 and pre-v32). */
2082 1.1.1.2 christos int plt_stub_offset = 8;
2083 1.1.1.2 christos int plt_entry_size = PLT_ENTRY_SIZE;
2084 1.1 skrll const bfd_byte *plt_entry = elf_cris_plt_entry;
2085 1.1 skrll const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry;
2086 1.1 skrll
2087 1.1 skrll htab = elf_cris_hash_table (info);
2088 1.1 skrll if (htab == NULL)
2089 1.1 skrll return FALSE;
2090 1.1 skrll
2091 1.1 skrll /* Adjust the various PLT entry offsets. */
2092 1.1 skrll if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2093 1.1 skrll {
2094 1.1 skrll plt_off2 = 14;
2095 1.1 skrll plt_off3 = 20;
2096 1.1 skrll plt_off3_value_bias = -2;
2097 1.1 skrll plt_stub_offset = 12;
2098 1.1 skrll plt_entry_size = PLT_ENTRY_SIZE_V32;
2099 1.1 skrll plt_entry = elf_cris_plt_entry_v32;
2100 1.1 skrll plt_pic_entry = elf_cris_pic_plt_entry_v32;
2101 1.1 skrll }
2102 1.1 skrll
2103 1.1 skrll if (h->plt.offset != (bfd_vma) -1)
2104 1.1.1.2 christos {
2105 1.1 skrll asection *splt;
2106 1.1 skrll asection *sgotplt;
2107 1.1 skrll asection *srela;
2108 1.1 skrll bfd_vma got_base;
2109 1.1.1.2 christos
2110 1.1.1.2 christos bfd_vma gotplt_offset
2111 1.1.1.2 christos = elf_cris_hash_entry (h)->gotplt_offset;
2112 1.1.1.2 christos Elf_Internal_Rela rela;
2113 1.1.1.2 christos bfd_byte *loc;
2114 1.1.1.2 christos bfd_boolean has_gotplt = gotplt_offset != 0;
2115 1.1.1.2 christos
2116 1.1.1.2 christos /* Get the index in the .rela.plt relocations for the .got.plt
2117 1.1.1.2 christos entry that corresponds to this symbol.
2118 1.1.1.2 christos We have to count backwards here, and the result is only valid
2119 1.1.1.2 christos as an index into .rela.plt. We also have to undo the effect
2120 1.1.1.2 christos of the R_CRIS_DTPMOD entry at .got index 3 (offset 12 into
2121 1.1.1.2 christos .got.plt) for which gotplt_offset is adjusted, because while
2122 1.1 skrll that entry goes into .got.plt, its relocation goes into
2123 1.1 skrll .rela.got, not .rela.plt. (It's not PLT-specific; not to be
2124 1.1 skrll processed as part of the runtime lazy .rela.plt relocation).
2125 1.1 skrll FIXME: There be literal constants here... */
2126 1.1 skrll bfd_vma rela_plt_index
2127 1.1 skrll = (htab->dtpmod_refcount != 0
2128 1.1 skrll ? gotplt_offset/4 - 2 - 3 : gotplt_offset/4 - 3);
2129 1.1 skrll
2130 1.1 skrll /* Get the offset into the .got table of the entry that corresponds
2131 1.1.1.2 christos to this function. Note that we embed knowledge that "incoming"
2132 1.1 skrll .got goes after .got.plt in the output without padding (pointer
2133 1.1 skrll aligned). However, that knowledge is present in several other
2134 1.1 skrll places too. */
2135 1.1 skrll bfd_vma got_offset
2136 1.1 skrll = (has_gotplt
2137 1.1 skrll ? gotplt_offset
2138 1.1.1.6 christos : h->got.offset + htab->next_gotplt_entry);
2139 1.1.1.6 christos
2140 1.1.1.6 christos /* This symbol has an entry in the procedure linkage table. Set it
2141 1.1 skrll up. */
2142 1.1 skrll
2143 1.1 skrll BFD_ASSERT (h->dynindx != -1);
2144 1.1 skrll
2145 1.1 skrll splt = htab->root.splt;
2146 1.1 skrll sgotplt = htab->root.sgotplt;
2147 1.1.1.4 christos srela = htab->root.srelplt;
2148 1.1 skrll BFD_ASSERT (splt != NULL && sgotplt != NULL
2149 1.1 skrll && (! has_gotplt || srela != NULL));
2150 1.1 skrll
2151 1.1 skrll got_base = sgotplt->output_section->vma + sgotplt->output_offset;
2152 1.1 skrll
2153 1.1 skrll /* Fill in the entry in the procedure linkage table. */
2154 1.1 skrll if (! bfd_link_pic (info))
2155 1.1 skrll {
2156 1.1 skrll memcpy (splt->contents + h->plt.offset, plt_entry,
2157 1.1 skrll plt_entry_size);
2158 1.1 skrll
2159 1.1 skrll /* We need to enter the absolute address of the GOT entry here. */
2160 1.1 skrll bfd_put_32 (output_bfd, got_base + got_offset,
2161 1.1 skrll splt->contents + h->plt.offset + plt_off1);
2162 1.1 skrll }
2163 1.1 skrll else
2164 1.1 skrll {
2165 1.1 skrll memcpy (splt->contents + h->plt.offset, plt_pic_entry,
2166 1.1 skrll plt_entry_size);
2167 1.1 skrll bfd_put_32 (output_bfd, got_offset,
2168 1.1 skrll splt->contents + h->plt.offset + plt_off1);
2169 1.1 skrll }
2170 1.1.1.2 christos
2171 1.1 skrll /* Fill in the plt entry and make a relocation, if this is a "real"
2172 1.1 skrll PLT entry. */
2173 1.1 skrll if (has_gotplt)
2174 1.1 skrll {
2175 1.1 skrll /* Fill in the offset to the reloc table. */
2176 1.1 skrll bfd_put_32 (output_bfd,
2177 1.1 skrll rela_plt_index * sizeof (Elf32_External_Rela),
2178 1.1 skrll splt->contents + h->plt.offset + plt_off2);
2179 1.1 skrll
2180 1.1 skrll /* Fill in the offset to the first PLT entry, where to "jump". */
2181 1.1 skrll bfd_put_32 (output_bfd,
2182 1.1 skrll - (h->plt.offset + plt_off3 + plt_off3_value_bias),
2183 1.1 skrll splt->contents + h->plt.offset + plt_off3);
2184 1.1 skrll
2185 1.1 skrll /* Fill in the entry in the global offset table with the address of
2186 1.1 skrll the relocating stub. */
2187 1.1 skrll bfd_put_32 (output_bfd,
2188 1.1 skrll (splt->output_section->vma
2189 1.1 skrll + splt->output_offset
2190 1.1 skrll + h->plt.offset
2191 1.1 skrll + plt_stub_offset),
2192 1.1 skrll sgotplt->contents + got_offset);
2193 1.1.1.2 christos
2194 1.1 skrll /* Fill in the entry in the .rela.plt section. */
2195 1.1 skrll rela.r_offset = (sgotplt->output_section->vma
2196 1.1 skrll + sgotplt->output_offset
2197 1.1 skrll + got_offset);
2198 1.1 skrll rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT);
2199 1.1 skrll rela.r_addend = 0;
2200 1.1 skrll loc = srela->contents + rela_plt_index * sizeof (Elf32_External_Rela);
2201 1.1 skrll bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2202 1.1 skrll }
2203 1.1 skrll
2204 1.1 skrll if (!h->def_regular)
2205 1.1 skrll {
2206 1.1 skrll /* Mark the symbol as undefined, rather than as defined in
2207 1.1 skrll the .plt section. Leave the value alone. */
2208 1.1 skrll sym->st_shndx = SHN_UNDEF;
2209 1.1 skrll
2210 1.1 skrll /* FIXME: From elf32-sparc.c 2001-02-19 (1.18). I still don't
2211 1.1 skrll know whether resetting the value is significant; if it really
2212 1.1 skrll is, rather than a quirk or bug in the sparc port, then I
2213 1.1 skrll believe we'd see this elsewhere. */
2214 1.1 skrll /* If the symbol is weak, we do need to clear the value.
2215 1.1 skrll Otherwise, the PLT entry would provide a definition for
2216 1.1 skrll the symbol even if the symbol wasn't defined anywhere,
2217 1.1 skrll and so the symbol would never be NULL. */
2218 1.1 skrll if (!h->ref_regular_nonweak)
2219 1.1 skrll sym->st_value = 0;
2220 1.1 skrll }
2221 1.1 skrll }
2222 1.1.1.2 christos
2223 1.1.1.4 christos /* For an ordinary program, we emit .got relocs only for symbols that
2224 1.1 skrll are in the dynamic-symbols table and are either defined by the
2225 1.1 skrll program or are undefined weak symbols, or are function symbols
2226 1.1 skrll where we do not output a PLT: the PLT reloc was output above and all
2227 1.1 skrll references to the function symbol are redirected to the PLT. */
2228 1.1 skrll if (h->got.offset != (bfd_vma) -1
2229 1.1 skrll && (elf_cris_hash_entry (h)->reg_got_refcount > 0)
2230 1.1 skrll && (bfd_link_pic (info)
2231 1.1 skrll || (h->dynindx != -1
2232 1.1 skrll && h->plt.offset == (bfd_vma) -1
2233 1.1 skrll && !h->def_regular
2234 1.1 skrll && h->root.type != bfd_link_hash_undefweak)))
2235 1.1 skrll {
2236 1.1 skrll asection *sgot;
2237 1.1.1.6 christos asection *srela;
2238 1.1.1.6 christos Elf_Internal_Rela rela;
2239 1.1 skrll bfd_byte *loc;
2240 1.1 skrll bfd_byte *where;
2241 1.1 skrll
2242 1.1 skrll /* This symbol has an entry in the global offset table. Set it up. */
2243 1.1 skrll
2244 1.1 skrll sgot = htab->root.sgot;
2245 1.1 skrll srela = htab->root.srelgot;
2246 1.1 skrll BFD_ASSERT (sgot != NULL && srela != NULL);
2247 1.1 skrll
2248 1.1 skrll rela.r_offset = (sgot->output_section->vma
2249 1.1 skrll + sgot->output_offset
2250 1.1 skrll + (h->got.offset &~ (bfd_vma) 1));
2251 1.1 skrll
2252 1.1.1.4 christos /* If this is a static link, or it is a -Bsymbolic link and the
2253 1.1.1.4 christos symbol is defined locally or was forced to be local because
2254 1.1 skrll of a version file, we just want to emit a RELATIVE reloc.
2255 1.1 skrll The entry in the global offset table will already have been
2256 1.1 skrll initialized in the relocate_section function. */
2257 1.1 skrll where = sgot->contents + (h->got.offset &~ (bfd_vma) 1);
2258 1.1 skrll if (! elf_hash_table (info)->dynamic_sections_created
2259 1.1 skrll || (bfd_link_pic (info)
2260 1.1 skrll && (SYMBOLIC_BIND (info, h) || h->dynindx == -1)
2261 1.1 skrll && h->def_regular))
2262 1.1 skrll {
2263 1.1 skrll rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
2264 1.1 skrll rela.r_addend = bfd_get_signed_32 (output_bfd, where);
2265 1.1 skrll }
2266 1.1 skrll else
2267 1.1 skrll {
2268 1.1 skrll bfd_put_32 (output_bfd, (bfd_vma) 0, where);
2269 1.1 skrll rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT);
2270 1.1 skrll rela.r_addend = 0;
2271 1.1 skrll }
2272 1.1 skrll
2273 1.1 skrll loc = srela->contents;
2274 1.1 skrll loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
2275 1.1 skrll bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2276 1.1 skrll }
2277 1.1 skrll
2278 1.1 skrll if (h->needs_copy)
2279 1.1 skrll {
2280 1.1 skrll asection *s;
2281 1.1 skrll Elf_Internal_Rela rela;
2282 1.1 skrll bfd_byte *loc;
2283 1.1.1.6 christos
2284 1.1.1.6 christos /* This symbol needs a copy reloc. Set it up. */
2285 1.1.1.6 christos
2286 1.1.1.6 christos BFD_ASSERT (h->dynindx != -1
2287 1.1 skrll && (h->root.type == bfd_link_hash_defined
2288 1.1 skrll || h->root.type == bfd_link_hash_defweak));
2289 1.1 skrll
2290 1.1 skrll if (h->root.u.def.section == htab->root.sdynrelro)
2291 1.1 skrll s = htab->root.sreldynrelro;
2292 1.1 skrll else
2293 1.1 skrll s = htab->root.srelbss;
2294 1.1 skrll
2295 1.1 skrll rela.r_offset = (h->root.u.def.value
2296 1.1 skrll + h->root.u.def.section->output_section->vma
2297 1.1 skrll + h->root.u.def.section->output_offset);
2298 1.1.1.4 christos rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY);
2299 1.1 skrll rela.r_addend = 0;
2300 1.1 skrll loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
2301 1.1 skrll bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2302 1.1 skrll }
2303 1.1 skrll
2304 1.1 skrll /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
2305 1.1.1.2 christos if (h == elf_hash_table (info)->hdynamic
2306 1.1.1.2 christos || h == elf_hash_table (info)->hgot)
2307 1.1.1.2 christos sym->st_shndx = SHN_ABS;
2308 1.1 skrll
2309 1.1 skrll return TRUE;
2310 1.1.1.3 christos }
2311 1.1.1.3 christos
2312 1.1 skrll /* Finish up the dynamic sections. Do *not* emit relocs here, as their
2314 1.1 skrll offsets were changed, as part of -z combreloc handling, from those we
2315 1.1 skrll computed. */
2316 1.1 skrll
2317 1.1 skrll static bfd_boolean
2318 1.1 skrll elf_cris_finish_dynamic_sections (bfd *output_bfd,
2319 1.1.1.6 christos struct bfd_link_info *info)
2320 1.1 skrll {
2321 1.1.1.3 christos bfd *dynobj;
2322 1.1 skrll asection *sgot;
2323 1.1 skrll asection *sdyn;
2324 1.1 skrll
2325 1.1 skrll dynobj = elf_hash_table (info)->dynobj;
2326 1.1 skrll
2327 1.1 skrll sgot = elf_hash_table (info)->sgotplt;
2328 1.1.1.6 christos BFD_ASSERT (sgot != NULL);
2329 1.1 skrll sdyn = bfd_get_linker_section (dynobj, ".dynamic");
2330 1.1 skrll
2331 1.1 skrll if (elf_hash_table (info)->dynamic_sections_created)
2332 1.1 skrll {
2333 1.1 skrll asection *splt;
2334 1.1 skrll Elf32_External_Dyn *dyncon, *dynconend;
2335 1.1 skrll
2336 1.1 skrll splt = elf_hash_table (info)->splt;
2337 1.1 skrll BFD_ASSERT (splt != NULL && sdyn != NULL);
2338 1.1 skrll
2339 1.1 skrll dyncon = (Elf32_External_Dyn *) sdyn->contents;
2340 1.1 skrll dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
2341 1.1 skrll for (; dyncon < dynconend; dyncon++)
2342 1.1 skrll {
2343 1.1 skrll Elf_Internal_Dyn dyn;
2344 1.1 skrll asection *s;
2345 1.1 skrll
2346 1.1.1.5 christos bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
2347 1.1 skrll
2348 1.1 skrll switch (dyn.d_tag)
2349 1.1 skrll {
2350 1.1 skrll default:
2351 1.1 skrll break;
2352 1.1 skrll
2353 1.1.1.6 christos case DT_PLTGOT:
2354 1.1.1.5 christos dyn.d_un.d_ptr = sgot->output_section->vma + sgot->output_offset;
2355 1.1.1.5 christos bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2356 1.1 skrll break;
2357 1.1 skrll
2358 1.1 skrll case DT_JMPREL:
2359 1.1 skrll /* Yes, we *can* have a .plt and no .plt.rela, for instance
2360 1.1.1.6 christos if all symbols are found in the .got (not .got.plt). */
2361 1.1 skrll s = elf_hash_table (info)->srelplt;
2362 1.1 skrll dyn.d_un.d_ptr = s != NULL ? (s->output_section->vma
2363 1.1 skrll + s->output_offset) : 0;
2364 1.1 skrll bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2365 1.1 skrll break;
2366 1.1 skrll
2367 1.1 skrll case DT_PLTRELSZ:
2368 1.1 skrll s = elf_hash_table (info)->srelplt;
2369 1.1 skrll if (s == NULL)
2370 1.1 skrll dyn.d_un.d_val = 0;
2371 1.1 skrll else
2372 1.1 skrll dyn.d_un.d_val = s->size;
2373 1.1 skrll bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2374 1.1 skrll break;
2375 1.1.1.4 christos }
2376 1.1 skrll }
2377 1.1 skrll
2378 1.1 skrll /* Fill in the first entry in the procedure linkage table. */
2379 1.1 skrll if (splt->size > 0)
2380 1.1 skrll {
2381 1.1 skrll if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2382 1.1 skrll {
2383 1.1 skrll if (bfd_link_pic (info))
2384 1.1 skrll memcpy (splt->contents, elf_cris_pic_plt0_entry_v32,
2385 1.1 skrll PLT_ENTRY_SIZE_V32);
2386 1.1 skrll else
2387 1.1 skrll {
2388 1.1 skrll memcpy (splt->contents, elf_cris_plt0_entry_v32,
2389 1.1 skrll PLT_ENTRY_SIZE_V32);
2390 1.1 skrll bfd_put_32 (output_bfd,
2391 1.1 skrll sgot->output_section->vma
2392 1.1 skrll + sgot->output_offset + 4,
2393 1.1.1.4 christos splt->contents + 4);
2394 1.1 skrll
2395 1.1 skrll elf_section_data (splt->output_section)->this_hdr.sh_entsize
2396 1.1 skrll = PLT_ENTRY_SIZE_V32;
2397 1.1 skrll }
2398 1.1 skrll }
2399 1.1 skrll else
2400 1.1 skrll {
2401 1.1 skrll if (bfd_link_pic (info))
2402 1.1 skrll memcpy (splt->contents, elf_cris_pic_plt0_entry,
2403 1.1 skrll PLT_ENTRY_SIZE);
2404 1.1 skrll else
2405 1.1 skrll {
2406 1.1 skrll memcpy (splt->contents, elf_cris_plt0_entry,
2407 1.1 skrll PLT_ENTRY_SIZE);
2408 1.1 skrll bfd_put_32 (output_bfd,
2409 1.1 skrll sgot->output_section->vma
2410 1.1 skrll + sgot->output_offset + 4,
2411 1.1 skrll splt->contents + 6);
2412 1.1.1.6 christos bfd_put_32 (output_bfd,
2413 1.1 skrll sgot->output_section->vma
2414 1.1 skrll + sgot->output_offset + 8,
2415 1.1 skrll splt->contents + 14);
2416 1.1 skrll
2417 1.1 skrll elf_section_data (splt->output_section)->this_hdr.sh_entsize
2418 1.1 skrll = PLT_ENTRY_SIZE;
2419 1.1 skrll }
2420 1.1 skrll }
2421 1.1 skrll }
2422 1.1 skrll }
2423 1.1 skrll
2424 1.1 skrll /* Fill in the first three entries in the global offset table. */
2425 1.1 skrll if (sgot->size > 0)
2426 1.1 skrll {
2427 1.1 skrll if (sdyn == NULL)
2428 1.1 skrll bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
2429 1.1 skrll else
2430 1.1 skrll bfd_put_32 (output_bfd,
2431 1.1 skrll sdyn->output_section->vma + sdyn->output_offset,
2432 1.1 skrll sgot->contents);
2433 1.1 skrll bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
2434 1.1 skrll bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
2435 1.1 skrll }
2436 1.1 skrll
2437 1.1 skrll elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
2438 1.1 skrll
2439 1.1 skrll return TRUE;
2440 1.1 skrll }
2441 1.1 skrll
2442 1.1 skrll /* Return the section that should be marked against GC for a given
2444 1.1.1.2 christos relocation. */
2445 1.1 skrll
2446 1.1.1.2 christos static asection *
2447 1.1 skrll cris_elf_gc_mark_hook (asection *sec,
2448 1.1 skrll struct bfd_link_info *info,
2449 1.1 skrll Elf_Internal_Rela *rel,
2450 1.1 skrll struct elf_link_hash_entry *h,
2451 1.1.1.2 christos Elf_Internal_Sym *sym)
2452 1.1.1.2 christos {
2453 1.1.1.2 christos enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
2454 1.1 skrll if (h != NULL)
2455 1.1 skrll switch (r_type)
2456 1.1 skrll {
2457 1.1 skrll case R_CRIS_GNU_VTINHERIT:
2458 1.1 skrll case R_CRIS_GNU_VTENTRY:
2459 1.1.1.2 christos return NULL;
2460 1.1.1.2 christos
2461 1.1.1.2 christos default:
2462 1.1.1.3 christos break;
2463 1.1.1.3 christos }
2464 1.1.1.2 christos
2465 1.1.1.2 christos return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2466 1.1.1.3 christos }
2467 1.1.1.3 christos
2468 1.1.1.3 christos /* The elf_backend_plt_sym_val hook function. */
2469 1.1.1.3 christos
2470 1.1.1.3 christos static bfd_vma
2471 1.1.1.3 christos cris_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED, const asection *plt,
2472 1.1.1.3 christos const arelent *rel)
2473 1.1.1.3 christos {
2474 1.1.1.3 christos bfd_size_type plt_entry_size;
2475 1.1.1.3 christos bfd_size_type pltoffs;
2476 1.1.1.3 christos bfd *abfd = plt->owner;
2477 1.1.1.3 christos
2478 1.1.1.3 christos /* Same for CRIS and CRIS v32; see elf_cris_(|pic_)plt_entry(|_v32)[]. */
2479 1.1.1.2 christos bfd_size_type plt_entry_got_offset = 2;
2480 1.1.1.3 christos bfd_size_type plt_sec_size;
2481 1.1.1.2 christos bfd_size_type got_vma_for_dyn;
2482 1.1.1.3 christos asection *got;
2483 1.1.1.2 christos
2484 1.1.1.2 christos /* FIXME: the .got section should be readily available also when
2485 1.1.1.3 christos we're not linking. */
2486 1.1.1.3 christos if ((got = bfd_get_section_by_name (abfd, ".got")) == NULL)
2487 1.1.1.3 christos return (bfd_vma) -1;
2488 1.1.1.3 christos
2489 1.1.1.3 christos plt_sec_size = bfd_section_size (plt->owner, plt);
2490 1.1.1.3 christos plt_entry_size
2491 1.1.1.3 christos = (bfd_get_mach (abfd) == bfd_mach_cris_v32
2492 1.1.1.3 christos ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2493 1.1.1.3 christos
2494 1.1.1.3 christos /* Data in PLT is GOT-relative for DYN, but absolute for EXE. */
2495 1.1.1.3 christos got_vma_for_dyn = (abfd->flags & EXEC_P) ? 0 : got->vma;
2496 1.1.1.3 christos
2497 1.1.1.3 christos /* Because we can have merged GOT entries; a single .got entry for
2498 1.1.1.3 christos both GOT and the PLT part of the GOT (.got.plt), the index of the
2499 1.1.1.3 christos reloc in .rela.plt is not the same as the index in the PLT.
2500 1.1.1.3 christos Instead, we have to hunt down the GOT offset in the PLT that
2501 1.1.1.3 christos corresponds to that of this reloc. Unfortunately, we will only
2502 1.1.1.3 christos be called for the .rela.plt relocs, so we'll miss synthetic
2503 1.1.1.3 christos symbols for .plt entries with merged GOT entries. (FIXME:
2504 1.1.1.3 christos fixable by providing our own bfd_elf32_get_synthetic_symtab.
2505 1.1.1.3 christos Doesn't seem worthwile at time of this writing.) FIXME: we've
2506 1.1.1.4 christos gone from O(1) to O(N) (N number of PLT entries) for finding each
2507 1.1.1.3 christos PLT address. Shouldn't matter in practice though. */
2508 1.1.1.3 christos
2509 1.1.1.3 christos for (pltoffs = plt_entry_size;
2510 1.1.1.3 christos pltoffs < plt_sec_size;
2511 1.1.1.3 christos pltoffs += plt_entry_size)
2512 1.1.1.3 christos {
2513 1.1.1.3 christos bfd_size_type got_offset;
2514 1.1.1.3 christos bfd_byte gotoffs_raw[4];
2515 1.1.1.3 christos
2516 1.1.1.3 christos if (!bfd_get_section_contents (abfd, (asection *) plt, gotoffs_raw,
2517 1.1.1.3 christos pltoffs + plt_entry_got_offset,
2518 1.1.1.3 christos sizeof (gotoffs_raw)))
2519 1.1.1.3 christos return (bfd_vma) -1;
2520 1.1.1.2 christos
2521 1.1.1.2 christos got_offset = bfd_get_32 (abfd, gotoffs_raw);
2522 1.1 skrll if (got_offset + got_vma_for_dyn == rel->address)
2523 1.1 skrll return plt->vma + pltoffs;
2524 1.1 skrll }
2525 1.1 skrll
2526 1.1 skrll /* While it's tempting to BFD_ASSERT that we shouldn't get here,
2527 1.1 skrll that'd not be graceful behavior for invalid input. */
2528 1.1 skrll return (bfd_vma) -1;
2529 1.1 skrll }
2530 1.1.1.3 christos
2531 1.1 skrll /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
2532 1.1 skrll entry but we found we will not create any. Called when we find we will
2533 1.1 skrll not have any PLT for this symbol, by for example
2534 1.1.1.3 christos elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link,
2535 1.1.1.6 christos or elf_cris_size_dynamic_sections if no dynamic sections will be
2536 1.1.1.3 christos created (we're only linking static objects). */
2537 1.1.1.6 christos
2538 1.1.1.3 christos static bfd_boolean
2539 1.1 skrll elf_cris_adjust_gotplt_to_got (struct elf_cris_link_hash_entry *h, void * p)
2540 1.1 skrll {
2541 1.1 skrll struct bfd_link_info *info = (struct bfd_link_info *) p;
2542 1.1 skrll
2543 1.1 skrll /* A GOTPLT reloc, when activated, is supposed to be included into
2544 1.1.1.2 christos the PLT refcount, when the symbol isn't set-or-forced local. */
2545 1.1 skrll BFD_ASSERT (h->gotplt_refcount == 0
2546 1.1.1.2 christos || h->root.plt.refcount == -1
2547 1.1.1.2 christos || h->gotplt_refcount <= h->root.plt.refcount);
2548 1.1 skrll
2549 1.1 skrll /* If nobody wanted a GOTPLT with this symbol, we're done. */
2550 1.1.1.2 christos if (h->gotplt_refcount <= 0)
2551 1.1 skrll return TRUE;
2552 1.1 skrll
2553 1.1 skrll if (h->reg_got_refcount > 0)
2554 1.1 skrll {
2555 1.1 skrll /* There's a GOT entry for this symbol. Just adjust the refcounts.
2556 1.1 skrll Probably not necessary at this stage, but keeping them accurate
2557 1.1 skrll helps avoiding surprises later. */
2558 1.1 skrll h->root.got.refcount += h->gotplt_refcount;
2559 1.1.1.6 christos h->reg_got_refcount += h->gotplt_refcount;
2560 1.1.1.6 christos h->gotplt_refcount = 0;
2561 1.1 skrll }
2562 1.1.1.2 christos else
2563 1.1.1.6 christos {
2564 1.1.1.2 christos /* No GOT entry for this symbol. We need to create one. */
2565 1.1.1.2 christos asection *sgot;
2566 1.1 skrll asection *srelgot;
2567 1.1 skrll
2568 1.1 skrll sgot = elf_hash_table (info)->sgot;
2569 1.1 skrll srelgot = elf_hash_table (info)->srelgot;
2570 1.1 skrll
2571 1.1 skrll /* Put accurate refcounts there. */
2572 1.1 skrll BFD_ASSERT (h->root.got.refcount >= 0);
2573 1.1 skrll h->root.got.refcount += h->gotplt_refcount;
2574 1.1 skrll h->reg_got_refcount = h->gotplt_refcount;
2575 1.1 skrll
2576 1.1 skrll h->gotplt_refcount = 0;
2577 1.1 skrll
2578 1.1 skrll /* We always have a .got and a .rela.got section if there were
2579 1.1 skrll GOTPLT relocs in input. */
2580 1.1 skrll BFD_ASSERT (sgot != NULL && srelgot != NULL);
2581 1.1 skrll
2582 1.1 skrll /* Allocate space in the .got section. */
2583 1.1 skrll sgot->size += 4;
2584 1.1 skrll
2585 1.1 skrll /* Allocate relocation space. */
2586 1.1 skrll srelgot->size += sizeof (Elf32_External_Rela);
2587 1.1 skrll }
2588 1.1 skrll
2589 1.1 skrll return TRUE;
2590 1.1 skrll }
2591 1.1 skrll
2592 1.1 skrll /* Try to fold PLT entries with GOT entries. There are two cases when we
2593 1.1 skrll want to do this:
2594 1.1 skrll
2595 1.1 skrll - When all PLT references are GOTPLT references, and there are GOT
2596 1.1 skrll references, and this is not the executable. We don't have to
2597 1.1 skrll generate a PLT at all.
2598 1.1 skrll
2599 1.1 skrll - When there are both (ordinary) PLT references and GOT references,
2600 1.1 skrll and this isn't the executable.
2601 1.1 skrll We want to make the PLT reference use the ordinary GOT entry rather
2602 1.1 skrll than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry,
2603 1.1 skrll since the GOT entry will have to be resolved at startup anyway.
2604 1.1 skrll
2605 1.1 skrll Though the latter case is handled when room for the PLT is allocated,
2606 1.1 skrll not here.
2607 1.1 skrll
2608 1.1.1.3 christos By folding into the GOT, we may need a round-trip to a PLT in the
2609 1.1 skrll executable for calls, a loss in performance. Still, losing a
2610 1.1 skrll reloc is a win in size and at least in start-up time.
2611 1.1 skrll
2612 1.1 skrll Note that this function is called before symbols are forced local by
2613 1.1 skrll version scripts. The differing cases are handled by
2614 1.1 skrll elf_cris_hide_symbol. */
2615 1.1 skrll
2616 1.1 skrll static bfd_boolean
2617 1.1 skrll elf_cris_try_fold_plt_to_got (struct elf_cris_link_hash_entry *h, void * p)
2618 1.1 skrll {
2619 1.1 skrll struct bfd_link_info *info = (struct bfd_link_info *) p;
2620 1.1 skrll
2621 1.1 skrll /* If there are no GOT references for this symbol, we can't fold any
2622 1.1 skrll other reference so there's nothing to do. Likewise if there are no
2623 1.1 skrll PLT references; GOTPLT references included. */
2624 1.1 skrll if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0)
2625 1.1 skrll return TRUE;
2626 1.1 skrll
2627 1.1 skrll /* GOTPLT relocs are supposed to be included into the PLT refcount. */
2628 1.1 skrll BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount);
2629 1.1 skrll
2630 1.1 skrll if (h->gotplt_refcount == h->root.plt.refcount)
2631 1.1 skrll {
2632 1.1 skrll /* The only PLT references are GOTPLT references, and there are GOT
2633 1.1 skrll references. Convert PLT to GOT references. */
2634 1.1 skrll if (! elf_cris_adjust_gotplt_to_got (h, info))
2635 1.1 skrll return FALSE;
2636 1.1 skrll
2637 1.1 skrll /* Clear the PLT references, so no PLT will be created. */
2638 1.1 skrll h->root.plt.offset = (bfd_vma) -1;
2639 1.1 skrll }
2640 1.1.1.3 christos
2641 1.1.1.3 christos return TRUE;
2642 1.1.1.3 christos }
2643 1.1 skrll
2644 1.1 skrll /* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc
2645 1.1 skrll to use a GOT entry (and create one) rather than requiring a GOTPLT
2646 1.1 skrll entry. */
2647 1.1 skrll
2648 1.1 skrll static void
2649 1.1 skrll elf_cris_hide_symbol (struct bfd_link_info *info,
2650 1.1 skrll struct elf_link_hash_entry *h,
2651 1.1 skrll bfd_boolean force_local)
2652 1.1 skrll {
2653 1.1 skrll elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info);
2654 1.1 skrll
2655 1.1 skrll _bfd_elf_link_hash_hide_symbol (info, h, force_local);
2656 1.1.1.2 christos }
2657 1.1.1.2 christos
2658 1.1 skrll /* Adjust a symbol defined by a dynamic object and referenced by a
2659 1.1.1.2 christos regular object. The current definition is in some section of the
2660 1.1 skrll dynamic object, but we're not including those sections. We have to
2661 1.1 skrll change the definition to something the rest of the link can
2662 1.1.1.6 christos understand. */
2663 1.1 skrll
2664 1.1 skrll static bfd_boolean
2665 1.1.1.2 christos elf_cris_adjust_dynamic_symbol (struct bfd_link_info *info,
2666 1.1.1.2 christos struct elf_link_hash_entry *h)
2667 1.1.1.2 christos {
2668 1.1.1.2 christos struct elf_cris_link_hash_table * htab;
2669 1.1.1.6 christos bfd *dynobj;
2670 1.1 skrll asection *s;
2671 1.1 skrll asection *srel;
2672 1.1 skrll bfd_size_type plt_entry_size;
2673 1.1 skrll
2674 1.1.1.6 christos htab = elf_cris_hash_table (info);
2675 1.1 skrll if (htab == NULL)
2676 1.1 skrll return FALSE;
2677 1.1 skrll
2678 1.1 skrll dynobj = htab->root.dynobj;
2679 1.1 skrll
2680 1.1 skrll /* Make sure we know what is going on here. */
2681 1.1 skrll BFD_ASSERT (dynobj != NULL
2682 1.1 skrll && (h->needs_plt
2683 1.1 skrll || h->is_weakalias
2684 1.1 skrll || (h->def_dynamic
2685 1.1 skrll && h->ref_regular
2686 1.1 skrll && !h->def_regular)));
2687 1.1 skrll
2688 1.1 skrll plt_entry_size
2689 1.1 skrll = (bfd_get_mach (dynobj) == bfd_mach_cris_v32
2690 1.1 skrll ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2691 1.1 skrll
2692 1.1 skrll /* If this is a function, put it in the procedure linkage table. We
2693 1.1 skrll will fill in the contents of the procedure linkage table later,
2694 1.1 skrll when we know the address of the .got section. */
2695 1.1.1.4 christos if (h->type == STT_FUNC
2696 1.1 skrll || h->needs_plt)
2697 1.1 skrll {
2698 1.1 skrll /* If we link a program (not a DSO), we'll get rid of unnecessary
2699 1.1 skrll PLT entries; we point to the actual symbols -- even for pic
2700 1.1 skrll relocs, because a program built with -fpic should have the same
2701 1.1 skrll result as one built without -fpic, specifically considering weak
2702 1.1 skrll symbols.
2703 1.1 skrll FIXME: m68k and i386 differ here, for unclear reasons. */
2704 1.1 skrll if (! bfd_link_pic (info)
2705 1.1 skrll && !h->def_dynamic)
2706 1.1 skrll {
2707 1.1 skrll /* This case can occur if we saw a PLT reloc in an input file,
2708 1.1 skrll but the symbol was not defined by a dynamic object. In such
2709 1.1 skrll a case, we don't actually need to build a procedure linkage
2710 1.1 skrll table, and we can just do an absolute or PC reloc instead, or
2711 1.1 skrll change a .got.plt index to a .got index for GOTPLT relocs. */
2712 1.1 skrll BFD_ASSERT (h->needs_plt);
2713 1.1 skrll h->needs_plt = 0;
2714 1.1 skrll h->plt.offset = (bfd_vma) -1;
2715 1.1 skrll return
2716 1.1 skrll elf_cris_adjust_gotplt_to_got ((struct
2717 1.1.1.4 christos elf_cris_link_hash_entry *) h,
2718 1.1 skrll info);
2719 1.1 skrll }
2720 1.1 skrll
2721 1.1 skrll /* If we had a R_CRIS_GLOB_DAT that didn't have to point to a PLT;
2722 1.1 skrll where a pointer-equivalent symbol was unimportant (i.e. more
2723 1.1 skrll like R_CRIS_JUMP_SLOT after symbol evaluation) we could get rid
2724 1.1 skrll of the PLT. We can't for the executable, because the GOT
2725 1.1 skrll entries will point to the PLT there (and be constant). */
2726 1.1 skrll if (bfd_link_pic (info)
2727 1.1 skrll && !elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry*)
2728 1.1 skrll h, info))
2729 1.1 skrll return FALSE;
2730 1.1 skrll
2731 1.1 skrll /* GC or folding may have rendered this entry unused. */
2732 1.1 skrll if (h->plt.refcount <= 0)
2733 1.1 skrll {
2734 1.1 skrll h->needs_plt = 0;
2735 1.1 skrll h->plt.offset = (bfd_vma) -1;
2736 1.1 skrll return TRUE;
2737 1.1.1.6 christos }
2738 1.1 skrll
2739 1.1 skrll /* Make sure this symbol is output as a dynamic symbol. */
2740 1.1 skrll if (h->dynindx == -1)
2741 1.1 skrll {
2742 1.1 skrll if (! bfd_elf_link_record_dynamic_symbol (info, h))
2743 1.1 skrll return FALSE;
2744 1.1 skrll }
2745 1.1 skrll
2746 1.1 skrll s = htab->root.splt;
2747 1.1 skrll BFD_ASSERT (s != NULL);
2748 1.1.1.4 christos
2749 1.1 skrll /* If this is the first .plt entry, make room for the special
2750 1.1 skrll first entry. */
2751 1.1 skrll if (s->size == 0)
2752 1.1 skrll s->size += plt_entry_size;
2753 1.1 skrll
2754 1.1 skrll /* If this symbol is not defined in a regular file, and we are
2755 1.1 skrll not generating a shared library, then set the symbol to this
2756 1.1 skrll location in the .plt. */
2757 1.1 skrll if (!bfd_link_pic (info)
2758 1.1 skrll && !h->def_regular)
2759 1.1 skrll {
2760 1.1 skrll h->root.u.def.section = s;
2761 1.1.1.4 christos h->root.u.def.value = s->size;
2762 1.1 skrll }
2763 1.1 skrll
2764 1.1 skrll /* If there's already a GOT entry, use that, not a .got.plt. A
2765 1.1 skrll GOT field still has a reference count when we get here; it's
2766 1.1 skrll not yet changed to an offset. We can't do this for an
2767 1.1 skrll executable, because then the reloc associated with the PLT
2768 1.1 skrll would get a non-PLT reloc pointing to the PLT. FIXME: Move
2769 1.1 skrll this to elf_cris_try_fold_plt_to_got. */
2770 1.1 skrll if (bfd_link_pic (info) && h->got.refcount > 0)
2771 1.1 skrll {
2772 1.1 skrll h->got.refcount += h->plt.refcount;
2773 1.1 skrll
2774 1.1 skrll /* Mark the PLT offset to use the GOT entry by setting the low
2775 1.1 skrll bit in the plt offset; it is always a multiple of
2776 1.1 skrll plt_entry_size (which is at least a multiple of 2). */
2777 1.1 skrll BFD_ASSERT ((s->size % plt_entry_size) == 0);
2778 1.1 skrll
2779 1.1 skrll /* Change the PLT refcount to an offset. */
2780 1.1 skrll h->plt.offset = s->size;
2781 1.1 skrll
2782 1.1 skrll /* By not setting gotplt_offset (i.e. it remains at 0), we signal
2783 1.1 skrll that the got entry should be used instead. */
2784 1.1 skrll BFD_ASSERT (((struct elf_cris_link_hash_entry *)
2785 1.1 skrll h)->gotplt_offset == 0);
2786 1.1 skrll
2787 1.1 skrll /* Make room for this entry. */
2788 1.1 skrll s->size += plt_entry_size;
2789 1.1 skrll
2790 1.1 skrll return TRUE;
2791 1.1 skrll }
2792 1.1 skrll
2793 1.1.1.2 christos /* No GOT reference for this symbol; prepare for an ordinary PLT. */
2794 1.1.1.2 christos h->plt.offset = s->size;
2795 1.1 skrll
2796 1.1.1.6 christos /* Make room for this entry. */
2797 1.1 skrll s->size += plt_entry_size;
2798 1.1 skrll
2799 1.1 skrll /* We also need to make an entry in the .got.plt section, which
2800 1.1 skrll will be placed in the .got section by the linker script. */
2801 1.1 skrll ((struct elf_cris_link_hash_entry *) h)->gotplt_offset
2802 1.1.1.6 christos = htab->next_gotplt_entry;
2803 1.1 skrll htab->next_gotplt_entry += 4;
2804 1.1 skrll
2805 1.1 skrll s = htab->root.sgotplt;
2806 1.1 skrll BFD_ASSERT (s != NULL);
2807 1.1 skrll s->size += 4;
2808 1.1 skrll
2809 1.1 skrll /* We also need to make an entry in the .rela.plt section. */
2810 1.1 skrll
2811 1.1 skrll s = htab->root.srelplt;
2812 1.1 skrll BFD_ASSERT (s != NULL);
2813 1.1 skrll s->size += sizeof (Elf32_External_Rela);
2814 1.1 skrll
2815 1.1 skrll return TRUE;
2816 1.1.1.6 christos }
2817 1.1 skrll
2818 1.1.1.6 christos /* Reinitialize the plt offset now that it is not used as a reference
2819 1.1.1.6 christos count any more. */
2820 1.1.1.6 christos h->plt.offset = (bfd_vma) -1;
2821 1.1.1.6 christos
2822 1.1 skrll /* If this is a weak symbol, and there is a real definition, the
2823 1.1 skrll processor independent code will have arranged for us to see the
2824 1.1 skrll real definition first, and we can just use the same value. */
2825 1.1 skrll if (h->is_weakalias)
2826 1.1 skrll {
2827 1.1 skrll struct elf_link_hash_entry *def = weakdef (h);
2828 1.1 skrll BFD_ASSERT (def->root.type == bfd_link_hash_defined);
2829 1.1 skrll h->root.u.def.section = def->root.u.def.section;
2830 1.1 skrll h->root.u.def.value = def->root.u.def.value;
2831 1.1 skrll return TRUE;
2832 1.1.1.4 christos }
2833 1.1 skrll
2834 1.1 skrll /* This is a reference to a symbol defined by a dynamic object which
2835 1.1 skrll is not a function. */
2836 1.1 skrll
2837 1.1 skrll /* If we are creating a shared library, we must presume that the
2838 1.1 skrll only references to the symbol are via the global offset table.
2839 1.1 skrll For such cases we need not do anything here; the relocations will
2840 1.1 skrll be handled correctly by relocate_section. */
2841 1.1 skrll if (bfd_link_pic (info))
2842 1.1 skrll return TRUE;
2843 1.1 skrll
2844 1.1 skrll /* If there are no references to this symbol that do not use the
2845 1.1 skrll GOT, we don't need to generate a copy reloc. */
2846 1.1 skrll if (!h->non_got_ref)
2847 1.1 skrll return TRUE;
2848 1.1 skrll
2849 1.1 skrll /* We must allocate the symbol in our .dynbss section, which will
2850 1.1 skrll become part of the .bss section of the executable. There will be
2851 1.1 skrll an entry for this symbol in the .dynsym section. The dynamic
2852 1.1 skrll object will contain position independent code, so all references
2853 1.1 skrll from the dynamic object to this symbol will go through the global
2854 1.1.1.6 christos offset table. The dynamic linker will use the .dynsym entry to
2855 1.1.1.6 christos determine the address it must put in the global offset table, so
2856 1.1.1.6 christos both the dynamic object and the regular object will refer to the
2857 1.1.1.6 christos same memory location for the variable. */
2858 1.1.1.6 christos
2859 1.1.1.6 christos /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to
2860 1.1.1.6 christos copy the initial value out of the dynamic object and into the
2861 1.1.1.6 christos runtime process image. We need to remember the offset into the
2862 1.1.1.6 christos .rela.bss section we are going to use. */
2863 1.1.1.6 christos
2864 1.1.1.6 christos if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
2865 1.1.1.3 christos {
2866 1.1 skrll s = htab->root.sdynrelro;
2867 1.1 skrll srel = htab->root.sreldynrelro;
2868 1.1 skrll }
2869 1.1 skrll else
2870 1.1 skrll {
2871 1.1 skrll s = htab->root.sdynbss;
2872 1.1.1.6 christos srel = htab->root.srelbss;
2873 1.1.1.6 christos }
2874 1.1.1.4 christos if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2875 1.1 skrll {
2876 1.1 skrll BFD_ASSERT (srel != NULL);
2877 1.1.1.2 christos srel->size += sizeof (Elf32_External_Rela);
2878 1.1.1.2 christos h->needs_copy = 1;
2879 1.1.1.2 christos }
2880 1.1.1.2 christos
2881 1.1.1.2 christos BFD_ASSERT (s != NULL);
2882 1.1.1.2 christos
2883 1.1.1.2 christos return _bfd_elf_adjust_dynamic_copy (info, h, s);
2884 1.1.1.2 christos }
2885 1.1.1.2 christos
2886 1.1.1.2 christos /* Adjust our "subclass" elements for an indirect symbol. */
2887 1.1.1.2 christos
2888 1.1.1.2 christos static void
2889 1.1.1.2 christos elf_cris_copy_indirect_symbol (struct bfd_link_info *info,
2890 1.1.1.2 christos struct elf_link_hash_entry *dir,
2891 1.1.1.2 christos struct elf_link_hash_entry *ind)
2892 1.1.1.2 christos {
2893 1.1.1.2 christos struct elf_cris_link_hash_entry *edir, *eind;
2894 1.1.1.2 christos
2895 1.1.1.2 christos edir = (struct elf_cris_link_hash_entry *) dir;
2896 1.1.1.2 christos eind = (struct elf_cris_link_hash_entry *) ind;
2897 1.1.1.2 christos
2898 1.1.1.2 christos /* Only indirect symbols are replaced; we're not interested in
2899 1.1.1.2 christos updating any of EIND's fields for other symbols. */
2900 1.1.1.2 christos if (eind->root.root.type != bfd_link_hash_indirect)
2901 1.1.1.2 christos {
2902 1.1.1.2 christos /* Still, we need to copy flags for e.g. weak definitions. */
2903 1.1.1.2 christos _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2904 1.1.1.2 christos return;
2905 1.1.1.2 christos }
2906 1.1.1.2 christos
2907 1.1.1.2 christos BFD_ASSERT (edir->gotplt_offset == 0 || eind->gotplt_offset == 0);
2908 1.1.1.2 christos
2909 1.1.1.2 christos #define XMOVOPZ(F, OP, Z) edir->F OP eind->F; eind->F = Z
2910 1.1.1.2 christos #define XMOVE(F) XMOVOPZ (F, +=, 0)
2911 1.1.1.2 christos if (eind->pcrel_relocs_copied != NULL)
2912 1.1.1.2 christos {
2913 1.1.1.2 christos if (edir->pcrel_relocs_copied != NULL)
2914 1.1.1.2 christos {
2915 1.1.1.2 christos struct elf_cris_pcrel_relocs_copied **pp;
2916 1.1.1.2 christos struct elf_cris_pcrel_relocs_copied *p;
2917 1.1.1.2 christos
2918 1.1.1.2 christos /* Add reloc counts against the indirect sym to the direct sym
2919 1.1.1.2 christos list. Merge any entries against the same section. */
2920 1.1.1.2 christos for (pp = &eind->pcrel_relocs_copied; *pp != NULL;)
2921 1.1.1.2 christos {
2922 1.1.1.2 christos struct elf_cris_pcrel_relocs_copied *q;
2923 1.1.1.2 christos p = *pp;
2924 1.1.1.2 christos for (q = edir->pcrel_relocs_copied; q != NULL; q = q->next)
2925 1.1.1.2 christos if (q->section == p->section)
2926 1.1.1.2 christos {
2927 1.1.1.2 christos q->count += p->count;
2928 1.1.1.2 christos *pp = p->next;
2929 1.1.1.2 christos break;
2930 1.1.1.2 christos }
2931 1.1.1.2 christos if (q == NULL)
2932 1.1.1.2 christos pp = &p->next;
2933 1.1.1.2 christos }
2934 1.1.1.2 christos *pp = edir->pcrel_relocs_copied;
2935 1.1.1.2 christos }
2936 1.1.1.2 christos XMOVOPZ (pcrel_relocs_copied, =, NULL);
2937 1.1.1.2 christos }
2938 1.1.1.2 christos XMOVE (gotplt_refcount);
2939 1.1.1.2 christos XMOVE (gotplt_offset);
2940 1.1 skrll XMOVE (reg_got_refcount);
2941 1.1 skrll XMOVE (tprel_refcount);
2942 1.1 skrll XMOVE (dtp_refcount);
2943 1.1.1.2 christos #undef XMOVE
2944 1.1.1.2 christos #undef XMOVOPZ
2945 1.1.1.2 christos
2946 1.1.1.2 christos _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2947 1.1 skrll }
2948 1.1.1.2 christos
2949 1.1 skrll /* Look through the relocs for a section during the first phase. */
2950 1.1 skrll
2951 1.1 skrll static bfd_boolean
2952 1.1 skrll cris_elf_check_relocs (bfd *abfd,
2953 1.1 skrll struct bfd_link_info *info,
2954 1.1 skrll asection *sec,
2955 1.1 skrll const Elf_Internal_Rela *relocs)
2956 1.1 skrll {
2957 1.1 skrll struct elf_cris_link_hash_table * htab;
2958 1.1 skrll bfd *dynobj;
2959 1.1.1.4 christos Elf_Internal_Shdr *symtab_hdr;
2960 1.1 skrll struct elf_link_hash_entry **sym_hashes;
2961 1.1 skrll bfd_signed_vma *local_got_refcounts;
2962 1.1.1.2 christos const Elf_Internal_Rela *rel;
2963 1.1.1.2 christos const Elf_Internal_Rela *rel_end;
2964 1.1.1.2 christos asection *sgot;
2965 1.1.1.2 christos asection *srelgot;
2966 1.1 skrll asection *sreloc;
2967 1.1 skrll
2968 1.1 skrll if (bfd_link_relocatable (info))
2969 1.1 skrll return TRUE;
2970 1.1 skrll
2971 1.1 skrll htab = elf_cris_hash_table (info);
2972 1.1 skrll if (htab == NULL)
2973 1.1 skrll return FALSE;
2974 1.1 skrll
2975 1.1 skrll dynobj = elf_hash_table (info)->dynobj;
2976 1.1 skrll symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2977 1.1 skrll sym_hashes = elf_sym_hashes (abfd);
2978 1.1 skrll local_got_refcounts = elf_local_got_refcounts (abfd);
2979 1.1 skrll
2980 1.1 skrll sgot = NULL;
2981 1.1.1.2 christos srelgot = NULL;
2982 1.1.1.2 christos sreloc = NULL;
2983 1.1 skrll
2984 1.1 skrll rel_end = relocs + sec->reloc_count;
2985 1.1 skrll for (rel = relocs; rel < rel_end; rel++)
2986 1.1.1.2 christos {
2987 1.1.1.2 christos struct elf_link_hash_entry *h;
2988 1.1.1.2 christos unsigned long r_symndx;
2989 1.1.1.2 christos enum elf_cris_reloc_type r_type;
2990 1.1 skrll bfd_signed_vma got_element_size = 4;
2991 1.1 skrll unsigned long r_symndx_lgot = INT_MAX;
2992 1.1 skrll
2993 1.1 skrll r_symndx = ELF32_R_SYM (rel->r_info);
2994 1.1 skrll if (r_symndx < symtab_hdr->sh_info)
2995 1.1 skrll {
2996 1.1 skrll h = NULL;
2997 1.1 skrll r_symndx_lgot = LGOT_REG_NDX (r_symndx);
2998 1.1 skrll }
2999 1.1 skrll else
3000 1.1 skrll {
3001 1.1 skrll h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3002 1.1 skrll while (h->root.type == bfd_link_hash_indirect
3003 1.1 skrll || h->root.type == bfd_link_hash_warning)
3004 1.1.1.2 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
3005 1.1.1.2 christos }
3006 1.1.1.2 christos
3007 1.1.1.2 christos r_type = ELF32_R_TYPE (rel->r_info);
3008 1.1.1.2 christos
3009 1.1.1.2 christos /* Some relocs require linker-created sections; we need to hang them
3010 1.1.1.2 christos on the first input bfd we found that contained dynamic relocs. */
3011 1.1.1.2 christos switch (r_type)
3012 1.1.1.2 christos {
3013 1.1.1.2 christos case R_CRIS_32_DTPREL:
3014 1.1.1.2 christos if ((sec->flags & SEC_ALLOC) == 0)
3015 1.1.1.2 christos /* This'd be a .dtpreld entry in e.g. debug info. We have
3016 1.1.1.2 christos several different switch statements below, but none of
3017 1.1.1.2 christos that is needed; we need no preparations for resolving
3018 1.1.1.2 christos R_CRIS_32_DTPREL into a non-allocated section (debug
3019 1.1.1.2 christos info), so let's just move on to the next
3020 1.1.1.2 christos relocation. */
3021 1.1.1.2 christos continue;
3022 1.1.1.2 christos /* Fall through. */
3023 1.1.1.2 christos case R_CRIS_16_DTPREL:
3024 1.1.1.2 christos /* The first .got.plt entry is right after the R_CRIS_DTPMOD
3025 1.1.1.2 christos entry at index 3. */
3026 1.1.1.2 christos if (htab->dtpmod_refcount == 0)
3027 1.1.1.2 christos htab->next_gotplt_entry += 8;
3028 1.1.1.2 christos
3029 1.1 skrll htab->dtpmod_refcount++;
3030 1.1 skrll /* Fall through. */
3031 1.1 skrll
3032 1.1 skrll case R_CRIS_32_IE:
3033 1.1 skrll case R_CRIS_32_GD:
3034 1.1 skrll case R_CRIS_16_GOT_GD:
3035 1.1 skrll case R_CRIS_32_GOT_GD:
3036 1.1 skrll case R_CRIS_32_GOT_TPREL:
3037 1.1 skrll case R_CRIS_16_GOT_TPREL:
3038 1.1 skrll case R_CRIS_16_GOT:
3039 1.1 skrll case R_CRIS_32_GOT:
3040 1.1 skrll case R_CRIS_32_GOTREL:
3041 1.1 skrll case R_CRIS_32_PLT_GOTREL:
3042 1.1 skrll case R_CRIS_32_PLT_PCREL:
3043 1.1 skrll case R_CRIS_16_GOTPLT:
3044 1.1 skrll case R_CRIS_32_GOTPLT:
3045 1.1.1.6 christos if (dynobj == NULL)
3046 1.1.1.6 christos {
3047 1.1.1.6 christos elf_hash_table (info)->dynobj = dynobj = abfd;
3048 1.1 skrll
3049 1.1 skrll /* We could handle this if we can get a handle on the
3050 1.1 skrll output bfd in elf_cris_adjust_dynamic_symbol. Failing
3051 1.1 skrll that, we must insist on dynobj being a specific mach. */
3052 1.1.1.4 christos if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32)
3053 1.1 skrll {
3054 1.1.1.4 christos _bfd_error_handler
3055 1.1.1.4 christos /* xgettext:c-format */
3056 1.1.1.4 christos (_("%B, section %A:\n v10/v32 compatible object"
3057 1.1.1.4 christos " must not contain a PIC relocation"),
3058 1.1.1.4 christos abfd, sec);
3059 1.1.1.4 christos return FALSE;
3060 1.1.1.4 christos }
3061 1.1 skrll }
3062 1.1 skrll
3063 1.1.1.2 christos if (sgot == NULL)
3064 1.1.1.6 christos {
3065 1.1.1.6 christos /* We may have a dynobj but no .got section, if machine-
3066 1.1.1.4 christos independent parts of the linker found a reason to create
3067 1.1.1.2 christos a dynobj. We want to create the .got section now, so we
3068 1.1.1.2 christos can assume it's always present whenever there's a dynobj.
3069 1.1.1.2 christos It's ok to call this function more than once. */
3070 1.1.1.2 christos if (!_bfd_elf_create_got_section (dynobj, info))
3071 1.1.1.2 christos return FALSE;
3072 1.1.1.2 christos
3073 1.1.1.2 christos sgot = elf_hash_table (info)->sgot;
3074 1.1.1.2 christos srelgot = elf_hash_table (info)->srelgot;
3075 1.1.1.2 christos }
3076 1.1.1.2 christos
3077 1.1.1.2 christos if (local_got_refcounts == NULL)
3078 1.1.1.2 christos {
3079 1.1.1.2 christos bfd_size_type amt;
3080 1.1.1.2 christos
3081 1.1.1.2 christos /* We use index local_got_refcounts[-1] to count all
3082 1.1.1.2 christos GOT-relative relocations that do not have explicit
3083 1.1.1.2 christos GOT entries. */
3084 1.1 skrll amt = LGOT_ALLOC_NELTS_FOR (symtab_hdr->sh_info) + 1;
3085 1.1 skrll amt *= sizeof (bfd_signed_vma);
3086 1.1 skrll local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt));
3087 1.1 skrll if (local_got_refcounts == NULL)
3088 1.1 skrll return FALSE;
3089 1.1 skrll
3090 1.1.1.2 christos local_got_refcounts++;
3091 1.1.1.2 christos elf_local_got_refcounts (abfd) = local_got_refcounts;
3092 1.1.1.2 christos }
3093 1.1.1.2 christos break;
3094 1.1.1.2 christos
3095 1.1.1.2 christos default:
3096 1.1.1.2 christos break;
3097 1.1.1.4 christos }
3098 1.1 skrll
3099 1.1.1.6 christos /* Warn and error for invalid input. */
3100 1.1.1.6 christos switch (r_type)
3101 1.1.1.2 christos {
3102 1.1.1.2 christos case R_CRIS_32_IE:
3103 1.1.1.2 christos case R_CRIS_32_TPREL:
3104 1.1.1.2 christos case R_CRIS_16_TPREL:
3105 1.1.1.2 christos case R_CRIS_32_GD:
3106 1.1.1.2 christos if (bfd_link_pic (info))
3107 1.1.1.2 christos {
3108 1.1.1.2 christos _bfd_error_handler
3109 1.1.1.2 christos /* xgettext:c-format */
3110 1.1.1.2 christos (_("%B, section %A:\n relocation %s not valid"
3111 1.1.1.2 christos " in a shared object;"
3112 1.1.1.2 christos " typically an option mixup, recompile with -fPIC"),
3113 1.1.1.2 christos abfd,
3114 1.1 skrll sec,
3115 1.1.1.2 christos cris_elf_howto_table[r_type].name);
3116 1.1.1.2 christos /* Don't return FALSE here; we want messages for all of
3117 1.1.1.2 christos these and the error behavior is ungraceful
3118 1.1.1.2 christos anyway. */
3119 1.1.1.2 christos }
3120 1.1.1.2 christos default:
3121 1.1.1.2 christos break;
3122 1.1.1.2 christos }
3123 1.1.1.2 christos
3124 1.1 skrll switch (r_type)
3125 1.1.1.2 christos {
3126 1.1.1.2 christos case R_CRIS_32_GD:
3127 1.1.1.2 christos case R_CRIS_16_GOT_GD:
3128 1.1.1.2 christos case R_CRIS_32_GOT_GD:
3129 1.1.1.2 christos /* These are requests for tls_index entries, run-time R_CRIS_DTP. */
3130 1.1.1.2 christos got_element_size = 8;
3131 1.1.1.2 christos r_symndx_lgot = LGOT_DTP_NDX (r_symndx);
3132 1.1.1.2 christos break;
3133 1.1.1.2 christos
3134 1.1.1.2 christos case R_CRIS_16_DTPREL:
3135 1.1.1.2 christos case R_CRIS_32_DTPREL:
3136 1.1.1.2 christos /* These two just request for the constant-index
3137 1.1.1.2 christos module-local tls_index-sized GOT entry, which we add
3138 1.1.1.2 christos elsewhere. */
3139 1.1.1.2 christos break;
3140 1.1.1.4 christos
3141 1.1.1.2 christos case R_CRIS_32_IE:
3142 1.1 skrll case R_CRIS_32_GOT_TPREL:
3143 1.1 skrll case R_CRIS_16_GOT_TPREL:
3144 1.1.1.2 christos r_symndx_lgot = LGOT_TPREL_NDX (r_symndx);
3145 1.1.1.2 christos
3146 1.1.1.2 christos /* Those relocs also require that a DSO is of type
3147 1.1.1.2 christos Initial Exec. Like other targets, we don't reset this
3148 1.1 skrll flag even if the relocs are GC:ed away. */
3149 1.1 skrll if (bfd_link_pic (info))
3150 1.1 skrll info->flags |= DF_STATIC_TLS;
3151 1.1 skrll break;
3152 1.1 skrll
3153 1.1.1.6 christos /* Let's list the other assembler-generated TLS-relocs too,
3154 1.1 skrll just to show that they're not forgotten. */
3155 1.1 skrll case R_CRIS_16_TPREL:
3156 1.1 skrll case R_CRIS_32_TPREL:
3157 1.1 skrll default:
3158 1.1 skrll break;
3159 1.1 skrll }
3160 1.1 skrll
3161 1.1.1.2 christos switch (r_type)
3162 1.1 skrll {
3163 1.1 skrll case R_CRIS_16_GOTPLT:
3164 1.1 skrll case R_CRIS_32_GOTPLT:
3165 1.1 skrll /* Mark that we need a GOT entry if the PLT entry (and its GOT
3166 1.1 skrll entry) is eliminated. We can only do this for a non-local
3167 1.1 skrll symbol. */
3168 1.1.1.2 christos if (h != NULL)
3169 1.1.1.2 christos {
3170 1.1.1.2 christos elf_cris_hash_entry (h)->gotplt_refcount++;
3171 1.1.1.2 christos goto handle_gotplt_reloc;
3172 1.1.1.2 christos }
3173 1.1.1.2 christos /* If h is NULL then this is a local symbol, and we must make a
3174 1.1 skrll GOT entry for it, so handle it like a GOT reloc. */
3175 1.1 skrll /* Fall through. */
3176 1.1 skrll
3177 1.1 skrll case R_CRIS_32_IE:
3178 1.1 skrll case R_CRIS_32_GD:
3179 1.1 skrll case R_CRIS_16_GOT_GD:
3180 1.1 skrll case R_CRIS_32_GOT_GD:
3181 1.1 skrll case R_CRIS_32_GOT_TPREL:
3182 1.1 skrll case R_CRIS_16_GOT_TPREL:
3183 1.1 skrll case R_CRIS_16_GOT:
3184 1.1 skrll case R_CRIS_32_GOT:
3185 1.1 skrll /* This symbol requires a global offset table entry. */
3186 1.1 skrll if (h != NULL)
3187 1.1 skrll {
3188 1.1.1.2 christos if (h->got.refcount == 0)
3189 1.1.1.2 christos {
3190 1.1 skrll /* Make sure this symbol is output as a dynamic symbol. */
3191 1.1.1.2 christos if (h->dynindx == -1)
3192 1.1.1.2 christos {
3193 1.1.1.2 christos if (!bfd_elf_link_record_dynamic_symbol (info, h))
3194 1.1.1.2 christos return FALSE;
3195 1.1.1.2 christos }
3196 1.1.1.2 christos }
3197 1.1.1.2 christos
3198 1.1.1.2 christos /* Update the sum of reloc counts for this symbol. */
3199 1.1.1.2 christos h->got.refcount++;
3200 1.1.1.2 christos
3201 1.1.1.2 christos switch (r_type)
3202 1.1.1.2 christos {
3203 1.1.1.2 christos case R_CRIS_16_GOT:
3204 1.1.1.2 christos case R_CRIS_32_GOT:
3205 1.1.1.2 christos if (elf_cris_hash_entry (h)->reg_got_refcount == 0)
3206 1.1.1.2 christos {
3207 1.1.1.2 christos /* Allocate space in the .got section. */
3208 1.1.1.2 christos sgot->size += got_element_size;
3209 1.1.1.2 christos /* Allocate relocation space. */
3210 1.1.1.2 christos srelgot->size += sizeof (Elf32_External_Rela);
3211 1.1.1.2 christos }
3212 1.1.1.2 christos elf_cris_hash_entry (h)->reg_got_refcount++;
3213 1.1.1.2 christos break;
3214 1.1.1.2 christos
3215 1.1.1.2 christos case R_CRIS_32_GD:
3216 1.1.1.2 christos case R_CRIS_16_GOT_GD:
3217 1.1.1.2 christos case R_CRIS_32_GOT_GD:
3218 1.1.1.2 christos if (elf_cris_hash_entry (h)->dtp_refcount == 0)
3219 1.1.1.2 christos {
3220 1.1.1.2 christos /* Allocate space in the .got section. */
3221 1.1.1.2 christos sgot->size += got_element_size;
3222 1.1.1.2 christos /* Allocate relocation space. */
3223 1.1.1.2 christos srelgot->size += sizeof (Elf32_External_Rela);
3224 1.1.1.2 christos }
3225 1.1.1.2 christos elf_cris_hash_entry (h)->dtp_refcount++;
3226 1.1.1.2 christos break;
3227 1.1.1.2 christos
3228 1.1.1.2 christos case R_CRIS_32_IE:
3229 1.1.1.2 christos case R_CRIS_32_GOT_TPREL:
3230 1.1.1.2 christos case R_CRIS_16_GOT_TPREL:
3231 1.1.1.2 christos if (elf_cris_hash_entry (h)->tprel_refcount == 0)
3232 1.1.1.2 christos {
3233 1.1.1.2 christos /* Allocate space in the .got section. */
3234 1.1.1.2 christos sgot->size += got_element_size;
3235 1.1.1.2 christos /* Allocate relocation space. */
3236 1.1 skrll srelgot->size += sizeof (Elf32_External_Rela);
3237 1.1 skrll }
3238 1.1 skrll elf_cris_hash_entry (h)->tprel_refcount++;
3239 1.1 skrll break;
3240 1.1.1.2 christos
3241 1.1 skrll default:
3242 1.1.1.2 christos BFD_FAIL ();
3243 1.1.1.4 christos break;
3244 1.1 skrll }
3245 1.1.1.2 christos }
3246 1.1.1.2 christos else
3247 1.1.1.2 christos {
3248 1.1.1.2 christos /* This is a global offset table entry for a local symbol. */
3249 1.1 skrll if (local_got_refcounts[r_symndx_lgot] == 0)
3250 1.1 skrll {
3251 1.1 skrll sgot->size += got_element_size;
3252 1.1.1.2 christos if (bfd_link_pic (info))
3253 1.1.1.2 christos {
3254 1.1.1.2 christos /* If we are generating a shared object, we need
3255 1.1.1.2 christos to output a R_CRIS_RELATIVE reloc so that the
3256 1.1 skrll dynamic linker can adjust this GOT entry.
3257 1.1 skrll Similarly for non-regular got entries. */
3258 1.1 skrll srelgot->size += sizeof (Elf32_External_Rela);
3259 1.1 skrll }
3260 1.1.1.2 christos }
3261 1.1.1.2 christos /* Update the reloc-specific count. */
3262 1.1 skrll local_got_refcounts[r_symndx_lgot]++;
3263 1.1 skrll
3264 1.1 skrll /* This one is the sum of all the others. */
3265 1.1 skrll local_got_refcounts[r_symndx]++;
3266 1.1 skrll }
3267 1.1 skrll break;
3268 1.1 skrll
3269 1.1 skrll case R_CRIS_16_DTPREL:
3270 1.1 skrll case R_CRIS_32_DTPREL:
3271 1.1 skrll case R_CRIS_32_GOTREL:
3272 1.1 skrll /* This reference requires a global offset table.
3273 1.1 skrll FIXME: The actual refcount isn't used currently; the .got
3274 1.1 skrll section can't be removed if there were any references in the
3275 1.1 skrll input. */
3276 1.1 skrll local_got_refcounts[-1]++;
3277 1.1 skrll break;
3278 1.1 skrll
3279 1.1 skrll handle_gotplt_reloc:
3280 1.1.1.6 christos
3281 1.1.1.6 christos case R_CRIS_32_PLT_GOTREL:
3282 1.1.1.6 christos /* This reference requires a global offset table. */
3283 1.1.1.6 christos local_got_refcounts[-1]++;
3284 1.1 skrll /* Fall through. */
3285 1.1 skrll
3286 1.1 skrll case R_CRIS_32_PLT_PCREL:
3287 1.1 skrll /* This symbol requires a procedure linkage table entry. We
3288 1.1 skrll actually build the entry in adjust_dynamic_symbol,
3289 1.1 skrll because this might be a case of linking PIC code which is
3290 1.1 skrll never referenced by a dynamic object, in which case we
3291 1.1 skrll don't need to generate a procedure linkage table entry
3292 1.1 skrll after all. */
3293 1.1 skrll
3294 1.1 skrll /* Beware: if we'd check for visibility of the symbol here
3295 1.1.1.6 christos (and not marking the need for a PLT when non-visible), we'd
3296 1.1.1.6 christos get into trouble with keeping handling consistent with
3297 1.1.1.6 christos regards to relocs found before definition and GOTPLT
3298 1.1.1.6 christos handling. Eliminable PLT entries will be dealt with later
3299 1.1 skrll anyway. */
3300 1.1 skrll if (h == NULL)
3301 1.1 skrll continue;
3302 1.1 skrll
3303 1.1 skrll h->needs_plt = 1;
3304 1.1 skrll
3305 1.1.1.2 christos /* If the symbol is forced local, the refcount is unavailable. */
3306 1.1.1.2 christos if (h->plt.refcount != -1)
3307 1.1.1.2 christos h->plt.refcount++;
3308 1.1.1.2 christos break;
3309 1.1.1.2 christos
3310 1.1.1.2 christos case R_CRIS_8:
3311 1.1.1.2 christos case R_CRIS_16:
3312 1.1.1.4 christos case R_CRIS_32:
3313 1.1 skrll /* Let's help debug shared library creation. Any of these
3314 1.1 skrll relocs *can* be used in shared libs, but pages containing
3315 1.1 skrll them cannot be shared, so they're not appropriate for
3316 1.1 skrll common use. Don't warn for sections we don't care about,
3317 1.1.1.6 christos such as debug sections or non-constant sections. We
3318 1.1.1.6 christos can't help tables of (global) function pointers, for
3319 1.1 skrll example, though they must be emitted in a (writable) data
3320 1.1 skrll section to avoid having impure text sections. */
3321 1.1 skrll if (bfd_link_pic (info)
3322 1.1 skrll && (sec->flags & SEC_ALLOC) != 0
3323 1.1 skrll && (sec->flags & SEC_READONLY) != 0)
3324 1.1 skrll {
3325 1.1.1.3 christos /* FIXME: How do we make this optionally a warning only? */
3326 1.1.1.3 christos _bfd_error_handler
3327 1.1.1.3 christos /* xgettext:c-format */
3328 1.1.1.3 christos (_("%B, section %A:\n relocation %s should not"
3329 1.1.1.3 christos " be used in a shared object; recompile with -fPIC"),
3330 1.1.1.3 christos abfd,
3331 1.1.1.2 christos sec,
3332 1.1.1.2 christos cris_elf_howto_table[r_type].name);
3333 1.1.1.2 christos }
3334 1.1.1.2 christos
3335 1.1.1.2 christos /* We don't need to handle relocs into sections not going into
3336 1.1.1.2 christos the "real" output. */
3337 1.1.1.2 christos if ((sec->flags & SEC_ALLOC) == 0)
3338 1.1.1.2 christos break;
3339 1.1.1.2 christos
3340 1.1.1.2 christos if (h != NULL)
3341 1.1.1.2 christos {
3342 1.1.1.2 christos h->non_got_ref = 1;
3343 1.1.1.2 christos
3344 1.1.1.2 christos /* Make sure a plt entry is created for this symbol if it
3345 1.1.1.2 christos turns out to be a function defined by a dynamic object. */
3346 1.1.1.2 christos if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3347 1.1.1.2 christos h->plt.refcount++;
3348 1.1.1.2 christos }
3349 1.1.1.2 christos
3350 1.1.1.2 christos /* If we are creating a shared library and this is not a local
3351 1.1.1.2 christos symbol, we need to copy the reloc into the shared library.
3352 1.1.1.2 christos However when linking with -Bsymbolic and this is a global
3353 1.1.1.2 christos symbol which is defined in an object we are including in the
3354 1.1.1.2 christos link (i.e., DEF_REGULAR is set), then we can resolve the
3355 1.1.1.2 christos reloc directly. At this point we have not seen all the input
3356 1.1.1.2 christos files, so it is possible that DEF_REGULAR is not set now but
3357 1.1.1.6 christos will be set later (it is never cleared). In case of a weak
3358 1.1.1.6 christos definition, DEF_REGULAR may be cleared later by a strong
3359 1.1.1.2 christos definition in a shared library. We account for that
3360 1.1.1.2 christos possibility below by storing information in the relocs_copied
3361 1.1.1.2 christos field of the hash table entry. A similar situation occurs
3362 1.1.1.2 christos when creating shared libraries and symbol visibility changes
3363 1.1.1.2 christos render the symbol local. */
3364 1.1.1.2 christos
3365 1.1.1.2 christos /* No need to do anything if we're not creating a shared object. */
3366 1.1.1.2 christos if (! bfd_link_pic (info)
3367 1.1.1.2 christos || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
3368 1.1.1.2 christos break;
3369 1.1.1.2 christos
3370 1.1.1.2 christos /* We may need to create a reloc section in the dynobj and made room
3371 1.1.1.2 christos for this reloc. */
3372 1.1.1.2 christos if (sreloc == NULL)
3373 1.1.1.2 christos {
3374 1.1.1.2 christos sreloc = _bfd_elf_make_dynamic_reloc_section
3375 1.1.1.2 christos (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3376 1.1.1.2 christos
3377 1.1 skrll if (sreloc == NULL)
3378 1.1 skrll return FALSE;
3379 1.1 skrll }
3380 1.1 skrll
3381 1.1 skrll if (sec->flags & SEC_READONLY)
3382 1.1 skrll info->flags |= DF_TEXTREL;
3383 1.1 skrll
3384 1.1 skrll sreloc->size += sizeof (Elf32_External_Rela);
3385 1.1 skrll break;
3386 1.1 skrll
3387 1.1 skrll case R_CRIS_8_PCREL:
3388 1.1 skrll case R_CRIS_16_PCREL:
3389 1.1 skrll case R_CRIS_32_PCREL:
3390 1.1 skrll if (h != NULL)
3391 1.1 skrll {
3392 1.1 skrll h->non_got_ref = 1;
3393 1.1 skrll
3394 1.1 skrll /* Make sure a plt entry is created for this symbol if it
3395 1.1 skrll turns out to be a function defined by a dynamic object. */
3396 1.1 skrll if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3397 1.1 skrll h->plt.refcount++;
3398 1.1 skrll }
3399 1.1 skrll
3400 1.1 skrll /* If we are creating a shared library and this is not a local
3401 1.1 skrll symbol, we need to copy the reloc into the shared library.
3402 1.1 skrll However when linking with -Bsymbolic and this is a global
3403 1.1 skrll symbol which is defined in an object we are including in the
3404 1.1 skrll link (i.e., DEF_REGULAR is set), then we can resolve the
3405 1.1 skrll reloc directly. At this point we have not seen all the input
3406 1.1 skrll files, so it is possible that DEF_REGULAR is not set now but
3407 1.1.1.4 christos will be set later (it is never cleared). In case of a weak
3408 1.1 skrll definition, DEF_REGULAR may be cleared later by a strong
3409 1.1 skrll definition in a shared library. We account for that
3410 1.1 skrll possibility below by storing information in the relocs_copied
3411 1.1 skrll field of the hash table entry. A similar situation occurs
3412 1.1 skrll when creating shared libraries and symbol visibility changes
3413 1.1 skrll render the symbol local. */
3414 1.1 skrll
3415 1.1.1.2 christos /* No need to do anything if we're not creating a shared object. */
3416 1.1.1.2 christos if (! bfd_link_pic (info))
3417 1.1.1.2 christos break;
3418 1.1.1.2 christos
3419 1.1 skrll /* We don't need to handle relocs into sections not going into
3420 1.1.1.2 christos the "real" output. */
3421 1.1.1.2 christos if ((sec->flags & SEC_ALLOC) == 0)
3422 1.1.1.2 christos break;
3423 1.1.1.2 christos
3424 1.1.1.2 christos /* If the symbol is local, then we know already we can
3425 1.1.1.4 christos eliminate the reloc. */
3426 1.1.1.2 christos if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3427 1.1.1.2 christos break;
3428 1.1.1.2 christos
3429 1.1 skrll /* If this is with -Bsymbolic and the symbol isn't weak, and
3430 1.1.1.2 christos is defined by an ordinary object (the ones we include in
3431 1.1.1.2 christos this shared library) then we can also eliminate the
3432 1.1 skrll reloc. See comment above for more eliminable cases which
3433 1.1 skrll we can't identify at this time. */
3434 1.1.1.2 christos if (SYMBOLIC_BIND (info, h)
3435 1.1.1.2 christos && h->root.type != bfd_link_hash_defweak
3436 1.1 skrll && h->def_regular)
3437 1.1 skrll break;
3438 1.1.1.2 christos
3439 1.1 skrll /* We may need to create a reloc section in the dynobj and made room
3440 1.1 skrll for this reloc. */
3441 1.1 skrll if (sreloc == NULL)
3442 1.1 skrll {
3443 1.1.1.2 christos sreloc = _bfd_elf_make_dynamic_reloc_section
3444 1.1.1.2 christos (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3445 1.1.1.2 christos
3446 1.1.1.2 christos if (sreloc == NULL)
3447 1.1 skrll return FALSE;
3448 1.1.1.2 christos }
3449 1.1.1.2 christos
3450 1.1.1.2 christos sreloc->size += sizeof (Elf32_External_Rela);
3451 1.1 skrll
3452 1.1.1.2 christos /* We count the number of PC relative relocations we have
3453 1.1 skrll entered for this symbol, so that we can discard them
3454 1.1.1.2 christos again if the symbol is later defined by a regular object.
3455 1.1.1.2 christos We know that h is really a pointer to an
3456 1.1.1.2 christos elf_cris_link_hash_entry. */
3457 1.1 skrll {
3458 1.1.1.2 christos struct elf_cris_link_hash_entry *eh;
3459 1.1.1.2 christos struct elf_cris_pcrel_relocs_copied *p;
3460 1.1.1.2 christos
3461 1.1.1.2 christos eh = elf_cris_hash_entry (h);
3462 1.1.1.2 christos
3463 1.1.1.2 christos for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
3464 1.1.1.2 christos if (p->section == sec)
3465 1.1.1.2 christos break;
3466 1.1.1.2 christos
3467 1.1.1.2 christos if (p == NULL)
3468 1.1.1.2 christos {
3469 1.1.1.2 christos p = ((struct elf_cris_pcrel_relocs_copied *)
3470 1.1 skrll bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
3471 1.1.1.2 christos if (p == NULL)
3472 1.1.1.2 christos return FALSE;
3473 1.1 skrll p->next = eh->pcrel_relocs_copied;
3474 1.1 skrll eh->pcrel_relocs_copied = p;
3475 1.1.1.6 christos p->section = sec;
3476 1.1.1.6 christos p->count = 0;
3477 1.1.1.6 christos p->r_type = r_type;
3478 1.1.1.6 christos }
3479 1.1.1.6 christos
3480 1.1.1.6 christos ++p->count;
3481 1.1.1.6 christos }
3482 1.1.1.6 christos break;
3483 1.1.1.6 christos
3484 1.1.1.6 christos /* This relocation describes the C++ object vtable hierarchy.
3485 1.1.1.6 christos Reconstruct it for later use during GC. */
3486 1.1.1.6 christos case R_CRIS_GNU_VTINHERIT:
3487 1.1.1.6 christos if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3488 1.1.1.6 christos return FALSE;
3489 1.1.1.6 christos break;
3490 1.1 skrll
3491 1.1.1.2 christos /* This relocation describes which C++ vtable entries are actually
3492 1.1.1.2 christos used. Record for later use during GC. */
3493 1.1.1.2 christos case R_CRIS_GNU_VTENTRY:
3494 1.1.1.2 christos BFD_ASSERT (h != NULL);
3495 1.1.1.2 christos if (h != NULL
3496 1.1 skrll && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3497 1.1 skrll return FALSE;
3498 1.1 skrll break;
3499 1.1 skrll
3500 1.1.1.6 christos case R_CRIS_16_TPREL:
3501 1.1 skrll case R_CRIS_32_TPREL:
3502 1.1 skrll /* Already warned above, when necessary. */
3503 1.1 skrll break;
3504 1.1 skrll
3505 1.1 skrll default:
3506 1.1 skrll /* Other relocs do not appear here. */
3507 1.1 skrll bfd_set_error (bfd_error_bad_value);
3508 1.1 skrll return FALSE;
3509 1.1.1.2 christos }
3510 1.1.1.2 christos }
3511 1.1 skrll
3512 1.1.1.2 christos return TRUE;
3513 1.1 skrll }
3514 1.1 skrll
3515 1.1 skrll /* Set the sizes of the dynamic sections. */
3516 1.1 skrll
3517 1.1 skrll static bfd_boolean
3518 1.1.1.2 christos elf_cris_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
3519 1.1.1.2 christos struct bfd_link_info *info)
3520 1.1.1.2 christos {
3521 1.1.1.2 christos struct elf_cris_link_hash_table * htab;
3522 1.1.1.6 christos bfd *dynobj;
3523 1.1 skrll asection *s;
3524 1.1 skrll bfd_boolean plt;
3525 1.1.1.6 christos bfd_boolean relocs;
3526 1.1 skrll
3527 1.1 skrll htab = elf_cris_hash_table (info);
3528 1.1.1.4 christos if (htab == NULL)
3529 1.1 skrll return FALSE;
3530 1.1.1.3 christos
3531 1.1 skrll dynobj = htab->root.dynobj;
3532 1.1 skrll BFD_ASSERT (dynobj != NULL);
3533 1.1 skrll
3534 1.1 skrll if (htab->root.dynamic_sections_created)
3535 1.1 skrll {
3536 1.1 skrll /* Set the contents of the .interp section to the interpreter. */
3537 1.1 skrll if (bfd_link_executable (info) && !info->nointerp)
3538 1.1 skrll {
3539 1.1.1.2 christos s = bfd_get_linker_section (dynobj, ".interp");
3540 1.1.1.2 christos BFD_ASSERT (s != NULL);
3541 1.1 skrll s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3542 1.1 skrll s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3543 1.1 skrll }
3544 1.1 skrll }
3545 1.1 skrll else
3546 1.1 skrll {
3547 1.1.1.6 christos /* Adjust all expected GOTPLT uses to use a GOT entry instead. */
3548 1.1 skrll elf_cris_link_hash_traverse (htab, elf_cris_adjust_gotplt_to_got,
3549 1.1 skrll info);
3550 1.1 skrll
3551 1.1 skrll /* We may have created entries in the .rela.got section.
3552 1.1 skrll However, if we are not creating the dynamic sections, we will
3553 1.1 skrll not actually use these entries. Reset the size of .rela.got,
3554 1.1 skrll which will cause it to get stripped from the output file
3555 1.1 skrll below. */
3556 1.1 skrll s = htab->root.srelgot;
3557 1.1 skrll if (s != NULL)
3558 1.1 skrll s->size = 0;
3559 1.1.1.4 christos }
3560 1.1.1.2 christos
3561 1.1 skrll /* If this is a -Bsymbolic shared link, then we need to discard all PC
3562 1.1.1.2 christos relative relocs against symbols defined in a regular object. We
3563 1.1 skrll allocated space for them in the check_relocs routine, but we will not
3564 1.1.1.2 christos fill them in in the relocate_section routine. We also discard space
3565 1.1 skrll for relocs that have become for local symbols due to symbol
3566 1.1.1.2 christos visibility changes. For programs, we discard space for relocs for
3567 1.1 skrll symbols not referenced by any dynamic object. */
3568 1.1 skrll if (bfd_link_pic (info))
3569 1.1 skrll elf_cris_link_hash_traverse (htab,
3570 1.1 skrll elf_cris_discard_excess_dso_dynamics,
3571 1.1 skrll info);
3572 1.1 skrll else
3573 1.1 skrll elf_cris_link_hash_traverse (htab,
3574 1.1 skrll elf_cris_discard_excess_program_dynamics,
3575 1.1 skrll info);
3576 1.1 skrll
3577 1.1 skrll /* The check_relocs and adjust_dynamic_symbol entry points have
3578 1.1 skrll determined the sizes of the various dynamic sections. Allocate
3579 1.1 skrll memory for them. */
3580 1.1 skrll plt = FALSE;
3581 1.1 skrll relocs = FALSE;
3582 1.1 skrll for (s = dynobj->sections; s != NULL; s = s->next)
3583 1.1 skrll {
3584 1.1 skrll const char *name;
3585 1.1 skrll
3586 1.1 skrll if ((s->flags & SEC_LINKER_CREATED) == 0)
3587 1.1 skrll continue;
3588 1.1 skrll
3589 1.1.1.2 christos /* It's OK to base decisions on the section name, because none
3590 1.1.1.2 christos of the dynobj section names depend upon the input files. */
3591 1.1.1.2 christos name = bfd_get_section_name (dynobj, s);
3592 1.1.1.2 christos
3593 1.1.1.2 christos if (strcmp (name, ".plt") == 0)
3594 1.1.1.2 christos {
3595 1.1.1.2 christos /* Remember whether there is a PLT. */
3596 1.1.1.2 christos plt = s->size != 0;
3597 1.1 skrll }
3598 1.1 skrll else if (strcmp (name, ".got.plt") == 0)
3599 1.1.1.2 christos {
3600 1.1.1.2 christos /* The .got.plt contains the .got header as well as the
3601 1.1.1.4 christos actual .got.plt contents. The .got header may contain a
3602 1.1.1.2 christos R_CRIS_DTPMOD entry at index 3. */
3603 1.1.1.2 christos s->size += htab->dtpmod_refcount != 0
3604 1.1 skrll ? 8 : 0;
3605 1.1 skrll }
3606 1.1 skrll else if (CONST_STRNEQ (name, ".rela"))
3607 1.1.1.6 christos {
3608 1.1 skrll if (strcmp (name, ".rela.got") == 0
3609 1.1 skrll && htab->dtpmod_refcount != 0
3610 1.1 skrll && bfd_link_pic (info))
3611 1.1 skrll s->size += sizeof (Elf32_External_Rela);
3612 1.1 skrll
3613 1.1 skrll if (s->size != 0)
3614 1.1 skrll {
3615 1.1 skrll /* Remember whether there are any reloc sections other
3616 1.1 skrll than .rela.plt. */
3617 1.1.1.6 christos if (strcmp (name, ".rela.plt") != 0)
3618 1.1.1.6 christos relocs = TRUE;
3619 1.1 skrll
3620 1.1 skrll /* We use the reloc_count field as a counter if we need
3621 1.1 skrll to copy relocs into the output file. */
3622 1.1 skrll s->reloc_count = 0;
3623 1.1 skrll }
3624 1.1 skrll }
3625 1.1 skrll else if (! CONST_STRNEQ (name, ".got")
3626 1.1 skrll && strcmp (name, ".dynbss") != 0
3627 1.1 skrll && s != htab->root.sdynrelro)
3628 1.1 skrll {
3629 1.1 skrll /* It's not one of our sections, so don't allocate space. */
3630 1.1 skrll continue;
3631 1.1 skrll }
3632 1.1 skrll
3633 1.1 skrll if (s->size == 0)
3634 1.1 skrll {
3635 1.1 skrll /* If we don't need this section, strip it from the
3636 1.1 skrll output file. This is mostly to handle .rela.bss and
3637 1.1 skrll .rela.plt. We must create both sections in
3638 1.1 skrll create_dynamic_sections, because they must be created
3639 1.1 skrll before the linker maps input sections to output
3640 1.1 skrll sections. The linker does that before
3641 1.1 skrll adjust_dynamic_symbol is called, and it is that
3642 1.1 skrll function which decides whether anything needs to go
3643 1.1 skrll into these sections. */
3644 1.1 skrll s->flags |= SEC_EXCLUDE;
3645 1.1 skrll continue;
3646 1.1 skrll }
3647 1.1 skrll
3648 1.1 skrll if ((s->flags & SEC_HAS_CONTENTS) == 0)
3649 1.1 skrll continue;
3650 1.1 skrll
3651 1.1 skrll /* Allocate memory for the section contents. We use bfd_zalloc here
3652 1.1 skrll in case unused entries are not reclaimed before the section's
3653 1.1 skrll contents are written out. This should not happen, but this way
3654 1.1 skrll if it does, we will not write out garbage. For reloc sections,
3655 1.1 skrll this will make entries have the type R_CRIS_NONE. */
3656 1.1 skrll s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3657 1.1 skrll if (s->contents == NULL)
3658 1.1 skrll return FALSE;
3659 1.1 skrll }
3660 1.1 skrll
3661 1.1 skrll if (elf_hash_table (info)->dynamic_sections_created)
3662 1.1.1.4 christos {
3663 1.1 skrll /* Add some entries to the .dynamic section. We fill in the
3664 1.1 skrll values later, in elf_cris_finish_dynamic_sections, but we
3665 1.1 skrll must add the entries now so that we get the correct size for
3666 1.1 skrll the .dynamic section. The DT_DEBUG entry is filled in by the
3667 1.1 skrll dynamic linker and used by the debugger. */
3668 1.1 skrll #define add_dynamic_entry(TAG, VAL) \
3669 1.1 skrll _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3670 1.1 skrll
3671 1.1 skrll if (!bfd_link_pic (info))
3672 1.1 skrll {
3673 1.1 skrll if (!add_dynamic_entry (DT_DEBUG, 0))
3674 1.1 skrll return FALSE;
3675 1.1 skrll }
3676 1.1 skrll
3677 1.1 skrll if (plt)
3678 1.1 skrll {
3679 1.1 skrll if (!add_dynamic_entry (DT_PLTGOT, 0)
3680 1.1 skrll || !add_dynamic_entry (DT_PLTRELSZ, 0)
3681 1.1 skrll || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3682 1.1 skrll || !add_dynamic_entry (DT_JMPREL, 0))
3683 1.1 skrll return FALSE;
3684 1.1 skrll }
3685 1.1 skrll
3686 1.1 skrll if (relocs)
3687 1.1 skrll {
3688 1.1 skrll if (!add_dynamic_entry (DT_RELA, 0)
3689 1.1 skrll || !add_dynamic_entry (DT_RELASZ, 0)
3690 1.1 skrll || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3691 1.1 skrll return FALSE;
3692 1.1 skrll }
3693 1.1 skrll
3694 1.1 skrll if ((info->flags & DF_TEXTREL) != 0)
3695 1.1 skrll {
3696 1.1 skrll if (!add_dynamic_entry (DT_TEXTREL, 0))
3697 1.1 skrll return FALSE;
3698 1.1 skrll info->flags |= DF_TEXTREL;
3699 1.1 skrll }
3700 1.1 skrll }
3701 1.1 skrll #undef add_dynamic_entry
3702 1.1 skrll
3703 1.1 skrll return TRUE;
3704 1.1 skrll }
3705 1.1 skrll
3706 1.1 skrll /* This function is called via elf_cris_link_hash_traverse if we are
3707 1.1.1.3 christos creating a shared object. In the -Bsymbolic case, it discards the
3708 1.1.1.3 christos space allocated to copy PC relative relocs against symbols which
3709 1.1 skrll are defined in regular objects. For the normal non-symbolic case,
3710 1.1 skrll we also discard space for relocs that have become local due to
3711 1.1 skrll symbol visibility changes. We allocated space for them in the
3712 1.1 skrll check_relocs routine, but we won't fill them in in the
3713 1.1 skrll relocate_section routine. */
3714 1.1 skrll
3715 1.1 skrll static bfd_boolean
3716 1.1 skrll elf_cris_discard_excess_dso_dynamics (struct elf_cris_link_hash_entry *h,
3717 1.1 skrll void * inf)
3718 1.1.1.4 christos {
3719 1.1 skrll struct elf_cris_pcrel_relocs_copied *s;
3720 1.1 skrll struct bfd_link_info *info = (struct bfd_link_info *) inf;
3721 1.1.1.2 christos
3722 1.1.1.2 christos /* If a symbol has been forced local or we have found a regular
3723 1.1.1.2 christos definition for the symbolic link case, then we won't be needing
3724 1.1.1.2 christos any relocs. */
3725 1.1.1.2 christos if (h->root.def_regular
3726 1.1.1.2 christos && (h->root.forced_local
3727 1.1.1.2 christos || SYMBOLIC_BIND (info, &h->root)))
3728 1.1.1.2 christos {
3729 1.1.1.2 christos for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3730 1.1 skrll {
3731 1.1 skrll asection *sreloc
3732 1.1.1.2 christos = _bfd_elf_get_dynamic_reloc_section (elf_hash_table (info)
3733 1.1.1.2 christos ->dynobj,
3734 1.1.1.2 christos s->section,
3735 1.1.1.2 christos /*rela?*/ TRUE);
3736 1.1.1.2 christos sreloc->size -= s->count * sizeof (Elf32_External_Rela);
3737 1.1.1.2 christos }
3738 1.1.1.2 christos return TRUE;
3739 1.1.1.2 christos }
3740 1.1.1.2 christos
3741 1.1.1.2 christos /* If we have accounted for PC-relative relocs for read-only
3742 1.1.1.6 christos sections, now is the time to warn for them. We can't do it in
3743 1.1.1.6 christos cris_elf_check_relocs, because we don't know the status of all
3744 1.1.1.2 christos symbols at that time (and it's common to force symbols local
3745 1.1.1.2 christos late). */
3746 1.1.1.2 christos
3747 1.1.1.2 christos for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3748 1.1.1.2 christos if ((s->section->flags & SEC_READONLY) != 0)
3749 1.1.1.2 christos {
3750 1.1.1.2 christos /* FIXME: How do we make this optionally a warning only? */
3751 1.1.1.2 christos _bfd_error_handler
3752 1.1.1.2 christos /* xgettext:c-format */
3753 1.1.1.2 christos (_("%B, section `%A', to symbol `%s':\n"
3754 1.1.1.2 christos " relocation %s should not be used"
3755 1.1 skrll " in a shared object; recompile with -fPIC"),
3756 1.1 skrll s->section->owner,
3757 1.1 skrll s->section,
3758 1.1 skrll h->root.root.root.string,
3759 1.1 skrll cris_elf_howto_table[s->r_type].name);
3760 1.1 skrll
3761 1.1 skrll info->flags |= DF_TEXTREL;
3762 1.1 skrll }
3763 1.1.1.3 christos
3764 1.1.1.3 christos return TRUE;
3765 1.1 skrll }
3766 1.1 skrll
3767 1.1 skrll /* This function is called via elf_cris_link_hash_traverse if we are *not*
3768 1.1 skrll creating a shared object. We discard space for relocs for symbols put
3769 1.1 skrll in the .got, but which we found we do not have to resolve at run-time. */
3770 1.1 skrll
3771 1.1 skrll static bfd_boolean
3772 1.1 skrll elf_cris_discard_excess_program_dynamics (struct elf_cris_link_hash_entry *h,
3773 1.1 skrll void * inf)
3774 1.1 skrll {
3775 1.1 skrll struct bfd_link_info *info = (struct bfd_link_info *) inf;
3776 1.1.1.2 christos
3777 1.1 skrll /* If we're not creating a shared library and have a symbol which is
3778 1.1 skrll referred to by .got references, but the symbol is defined locally,
3779 1.1 skrll (or rather, not defined by a DSO) then lose the reloc for the .got
3780 1.1 skrll (don't allocate room for it). Likewise for relocs for something
3781 1.1 skrll for which we create a PLT. */
3782 1.1 skrll if (!h->root.def_dynamic
3783 1.1.1.6 christos || h->root.plt.refcount > 0)
3784 1.1 skrll {
3785 1.1 skrll if (h->reg_got_refcount > 0
3786 1.1 skrll /* The size of this section is only valid and in sync with the
3787 1.1 skrll various reference counts if we do dynamic; don't decrement it
3788 1.1 skrll otherwise. */
3789 1.1 skrll && elf_hash_table (info)->dynamic_sections_created)
3790 1.1 skrll {
3791 1.1 skrll bfd *dynobj = elf_hash_table (info)->dynobj;
3792 1.1 skrll asection *srelgot = elf_hash_table (info)->srelgot;
3793 1.1 skrll
3794 1.1 skrll BFD_ASSERT (dynobj != NULL);
3795 1.1.1.5 christos BFD_ASSERT (srelgot != NULL);
3796 1.1.1.5 christos
3797 1.1.1.5 christos srelgot->size -= sizeof (Elf32_External_Rela);
3798 1.1.1.5 christos }
3799 1.1 skrll
3800 1.1.1.6 christos /* If the locally-defined symbol isn't used by a DSO, then we don't
3801 1.1 skrll have to export it as a dynamic symbol. This was already done for
3802 1.1 skrll functions; doing this for all symbols would presumably not
3803 1.1 skrll introduce new problems. Of course we don't do this if we're
3804 1.1 skrll exporting all dynamic symbols, or all data symbols, regardless of
3805 1.1 skrll them being referenced or not. */
3806 1.1 skrll if (! (info->export_dynamic
3807 1.1 skrll || (h->root.type != STT_FUNC && info->dynamic_data))
3808 1.1 skrll && h->root.dynindx != -1
3809 1.1 skrll && !h->root.dynamic
3810 1.1 skrll && !h->root.def_dynamic
3811 1.1 skrll && !h->root.ref_dynamic)
3812 1.1 skrll {
3813 1.1 skrll h->root.dynindx = -1;
3814 1.1 skrll _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3815 1.1 skrll h->root.dynstr_index);
3816 1.1 skrll }
3817 1.1.1.3 christos }
3818 1.1 skrll
3819 1.1 skrll return TRUE;
3820 1.1 skrll }
3821 1.1 skrll
3822 1.1 skrll /* Reject a file depending on presence and expectation of prefixed
3823 1.1 skrll underscores on symbols. */
3824 1.1 skrll
3825 1.1 skrll static bfd_boolean
3826 1.1 skrll cris_elf_object_p (bfd *abfd)
3827 1.1 skrll {
3828 1.1 skrll if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags))
3829 1.1 skrll return FALSE;
3830 1.1 skrll
3831 1.1 skrll if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE))
3832 1.1.1.3 christos return (bfd_get_symbol_leading_char (abfd) == '_');
3833 1.1.1.3 christos else
3834 1.1 skrll return (bfd_get_symbol_leading_char (abfd) == 0);
3835 1.1 skrll }
3836 1.1 skrll
3837 1.1 skrll /* Mark presence or absence of leading underscore. Set machine type
3838 1.1 skrll flags from mach type. */
3839 1.1 skrll
3840 1.1 skrll static void
3841 1.1 skrll cris_elf_final_write_processing (bfd *abfd,
3842 1.1 skrll bfd_boolean linker ATTRIBUTE_UNUSED)
3843 1.1 skrll {
3844 1.1 skrll unsigned long e_flags = elf_elfheader (abfd)->e_flags;
3845 1.1 skrll
3846 1.1 skrll e_flags &= ~EF_CRIS_UNDERSCORE;
3847 1.1 skrll if (bfd_get_symbol_leading_char (abfd) == '_')
3848 1.1 skrll e_flags |= EF_CRIS_UNDERSCORE;
3849 1.1 skrll
3850 1.1 skrll switch (bfd_get_mach (abfd))
3851 1.1 skrll {
3852 1.1 skrll case bfd_mach_cris_v0_v10:
3853 1.1 skrll e_flags |= EF_CRIS_VARIANT_ANY_V0_V10;
3854 1.1 skrll break;
3855 1.1 skrll
3856 1.1 skrll case bfd_mach_cris_v10_v32:
3857 1.1 skrll e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32;
3858 1.1 skrll break;
3859 1.1 skrll
3860 1.1 skrll case bfd_mach_cris_v32:
3861 1.1 skrll e_flags |= EF_CRIS_VARIANT_V32;
3862 1.1 skrll break;
3863 1.1 skrll
3864 1.1 skrll default:
3865 1.1 skrll _bfd_abort (__FILE__, __LINE__,
3866 1.1.1.3 christos _("Unexpected machine number"));
3867 1.1.1.3 christos }
3868 1.1 skrll
3869 1.1 skrll elf_elfheader (abfd)->e_flags = e_flags;
3870 1.1 skrll }
3871 1.1 skrll
3872 1.1 skrll /* Set the mach type from e_flags value. */
3873 1.1 skrll
3874 1.1 skrll static bfd_boolean
3875 1.1 skrll cris_elf_set_mach_from_flags (bfd *abfd,
3876 1.1 skrll unsigned long flags)
3877 1.1 skrll {
3878 1.1 skrll switch (flags & EF_CRIS_VARIANT_MASK)
3879 1.1 skrll {
3880 1.1 skrll case EF_CRIS_VARIANT_ANY_V0_V10:
3881 1.1 skrll bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10);
3882 1.1 skrll break;
3883 1.1 skrll
3884 1.1 skrll case EF_CRIS_VARIANT_V32:
3885 1.1 skrll bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32);
3886 1.1 skrll break;
3887 1.1 skrll
3888 1.1 skrll case EF_CRIS_VARIANT_COMMON_V10_V32:
3889 1.1 skrll bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32);
3890 1.1 skrll break;
3891 1.1 skrll
3892 1.1 skrll default:
3893 1.1 skrll /* Since we don't recognize them, we obviously can't support them
3894 1.1 skrll with this code; we'd have to require that all future handling
3895 1.1 skrll would be optional. */
3896 1.1 skrll bfd_set_error (bfd_error_wrong_format);
3897 1.1.1.3 christos return FALSE;
3898 1.1 skrll }
3899 1.1 skrll
3900 1.1 skrll return TRUE;
3901 1.1 skrll }
3902 1.1 skrll
3903 1.1 skrll /* Display the flags field. */
3904 1.1 skrll
3905 1.1 skrll static bfd_boolean
3906 1.1 skrll cris_elf_print_private_bfd_data (bfd *abfd, void * ptr)
3907 1.1 skrll {
3908 1.1 skrll FILE *file = (FILE *) ptr;
3909 1.1 skrll
3910 1.1 skrll BFD_ASSERT (abfd != NULL && ptr != NULL);
3911 1.1 skrll
3912 1.1 skrll _bfd_elf_print_private_bfd_data (abfd, ptr);
3913 1.1 skrll
3914 1.1 skrll fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
3915 1.1 skrll
3916 1.1 skrll if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)
3917 1.1 skrll fprintf (file, _(" [symbols have a _ prefix]"));
3918 1.1 skrll if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
3919 1.1 skrll == EF_CRIS_VARIANT_COMMON_V10_V32)
3920 1.1 skrll fprintf (file, _(" [v10 and v32]"));
3921 1.1 skrll if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
3922 1.1 skrll == EF_CRIS_VARIANT_V32)
3923 1.1.1.6 christos fprintf (file, _(" [v32]"));
3924 1.1 skrll
3925 1.1.1.6 christos fputc ('\n', file);
3926 1.1 skrll return TRUE;
3927 1.1 skrll }
3928 1.1.1.6 christos
3929 1.1 skrll /* Don't mix files with and without a leading underscore. */
3930 1.1 skrll
3931 1.1 skrll static bfd_boolean
3932 1.1 skrll cris_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
3933 1.1 skrll {
3934 1.1 skrll bfd *obfd = info->output_bfd;
3935 1.1 skrll int imach, omach;
3936 1.1 skrll
3937 1.1 skrll if (! _bfd_generic_verify_endian_match (ibfd, info))
3938 1.1 skrll return FALSE;
3939 1.1 skrll
3940 1.1 skrll if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3941 1.1 skrll || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3942 1.1 skrll return TRUE;
3943 1.1 skrll
3944 1.1 skrll imach = bfd_get_mach (ibfd);
3945 1.1 skrll
3946 1.1 skrll if (! elf_flags_init (obfd))
3947 1.1 skrll {
3948 1.1 skrll /* This happens when ld starts out with a 'blank' output file. */
3949 1.1 skrll elf_flags_init (obfd) = TRUE;
3950 1.1 skrll
3951 1.1 skrll /* We ignore the linker-set mach, and instead set it according to
3952 1.1 skrll the first input file. This would also happen if we could
3953 1.1 skrll somehow filter out the OUTPUT_ARCH () setting from elf.sc.
3954 1.1 skrll This allows us to keep the same linker config across
3955 1.1 skrll cris(v0..v10) and crisv32. The drawback is that we can't force
3956 1.1.1.6 christos the output type, which might be a sane thing to do for a
3957 1.1 skrll v10+v32 compatibility object. */
3958 1.1 skrll if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
3959 1.1 skrll return FALSE;
3960 1.1 skrll }
3961 1.1 skrll
3962 1.1 skrll if (bfd_get_symbol_leading_char (ibfd)
3963 1.1 skrll != bfd_get_symbol_leading_char (obfd))
3964 1.1 skrll {
3965 1.1 skrll _bfd_error_handler
3966 1.1 skrll (bfd_get_symbol_leading_char (ibfd) == '_'
3967 1.1 skrll ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols")
3968 1.1 skrll : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"),
3969 1.1 skrll ibfd);
3970 1.1 skrll bfd_set_error (bfd_error_bad_value);
3971 1.1 skrll return FALSE;
3972 1.1 skrll }
3973 1.1 skrll
3974 1.1 skrll omach = bfd_get_mach (obfd);
3975 1.1 skrll
3976 1.1.1.6 christos if (imach != omach)
3977 1.1 skrll {
3978 1.1 skrll /* We can get an incompatible combination only if either is
3979 1.1 skrll bfd_mach_cris_v32, and the other one isn't compatible. */
3980 1.1 skrll if ((imach == bfd_mach_cris_v32
3981 1.1 skrll && omach != bfd_mach_cris_v10_v32)
3982 1.1 skrll || (omach == bfd_mach_cris_v32
3983 1.1 skrll && imach != bfd_mach_cris_v10_v32))
3984 1.1 skrll {
3985 1.1 skrll _bfd_error_handler
3986 1.1 skrll ((imach == bfd_mach_cris_v32)
3987 1.1 skrll ? _("%B contains CRIS v32 code, incompatible"
3988 1.1 skrll " with previous objects")
3989 1.1 skrll : _("%B contains non-CRIS-v32 code, incompatible"
3990 1.1 skrll " with previous objects"),
3991 1.1 skrll ibfd);
3992 1.1 skrll bfd_set_error (bfd_error_bad_value);
3993 1.1 skrll return FALSE;
3994 1.1 skrll }
3995 1.1 skrll
3996 1.1 skrll /* We don't have to check the case where the input is compatible
3997 1.1 skrll with v10 and v32, because the output is already known to be set
3998 1.1 skrll to the other (compatible) mach. */
3999 1.1 skrll if (omach == bfd_mach_cris_v10_v32
4000 1.1 skrll && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4001 1.1.1.3 christos return FALSE;
4002 1.1 skrll }
4003 1.1 skrll
4004 1.1 skrll return TRUE;
4005 1.1 skrll }
4006 1.1 skrll
4007 1.1.1.6 christos /* Do side-effects of e_flags copying to obfd. */
4008 1.1.1.6 christos
4009 1.1.1.6 christos static bfd_boolean
4010 1.1.1.6 christos cris_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
4011 1.1 skrll {
4012 1.1 skrll if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4013 1.1 skrll || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4014 1.1 skrll return TRUE;
4015 1.1 skrll
4016 1.1.1.4 christos /* Call the base function. */
4017 1.1.1.4 christos if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd))
4018 1.1.1.4 christos return FALSE;
4019 1.1 skrll
4020 1.1.1.2 christos /* Do what we really came here for. */
4021 1.1.1.2 christos return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd));
4022 1.1 skrll }
4023 1.1 skrll
4024 1.1 skrll static enum elf_reloc_type_class
4025 1.1 skrll elf_cris_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4026 1.1 skrll const asection *rel_sec ATTRIBUTE_UNUSED,
4027 1.1 skrll const Elf_Internal_Rela *rela)
4028 1.1 skrll {
4029 1.1 skrll enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rela->r_info);
4030 1.1 skrll switch (r_type)
4031 1.1 skrll {
4032 1.1 skrll case R_CRIS_RELATIVE:
4033 1.1.1.2 christos return reloc_class_relative;
4034 1.1.1.2 christos case R_CRIS_JUMP_SLOT:
4035 1.1.1.2 christos return reloc_class_plt;
4036 1.1.1.2 christos case R_CRIS_COPY:
4037 1.1.1.2 christos return reloc_class_copy;
4038 1.1.1.2 christos default:
4039 1.1.1.2 christos return reloc_class_normal;
4040 1.1.1.2 christos }
4041 1.1.1.2 christos }
4042 1.1.1.2 christos
4043 1.1.1.2 christos /* The elf_backend_got_elt_size worker. For one symbol, we can have up to
4044 1.1.1.2 christos two GOT entries from three types with two different sizes. We handle
4045 1.1.1.2 christos it as a single entry, so we can use the regular offset-calculation
4046 1.1.1.2 christos machinery. */
4047 1.1.1.2 christos
4048 1.1.1.2 christos static bfd_vma
4049 1.1.1.2 christos elf_cris_got_elt_size (bfd *abfd ATTRIBUTE_UNUSED,
4050 1.1.1.2 christos struct bfd_link_info *info ATTRIBUTE_UNUSED,
4051 1.1.1.2 christos struct elf_link_hash_entry *hr,
4052 1.1.1.2 christos bfd *ibfd,
4053 1.1.1.2 christos unsigned long symndx)
4054 1.1.1.2 christos {
4055 1.1.1.2 christos struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) hr;
4056 1.1.1.2 christos bfd_vma eltsiz = 0;
4057 1.1.1.2 christos
4058 1.1.1.2 christos /* We may have one regular GOT entry or up to two TLS GOT
4059 1.1.1.2 christos entries. */
4060 1.1.1.2 christos if (h == NULL)
4061 1.1.1.2 christos {
4062 1.1.1.2 christos Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4063 1.1.1.2 christos bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (ibfd);
4064 1.1.1.2 christos
4065 1.1.1.2 christos BFD_ASSERT (local_got_refcounts != NULL);
4066 1.1.1.2 christos
4067 1.1.1.2 christos if (local_got_refcounts[LGOT_REG_NDX (symndx)] > 0)
4068 1.1.1.2 christos {
4069 1.1.1.2 christos /* We can't have a variable referred to both as a regular
4070 1.1.1.2 christos variable and through TLS relocs. */
4071 1.1.1.2 christos BFD_ASSERT (local_got_refcounts[LGOT_DTP_NDX (symndx)] == 0
4072 1.1.1.2 christos && local_got_refcounts[LGOT_TPREL_NDX (symndx)] == 0);
4073 1.1.1.2 christos return 4;
4074 1.1.1.2 christos }
4075 1.1.1.2 christos
4076 1.1.1.2 christos if (local_got_refcounts[LGOT_DTP_NDX (symndx)] > 0)
4077 1.1.1.2 christos eltsiz += 8;
4078 1.1.1.2 christos
4079 1.1.1.2 christos if (local_got_refcounts[LGOT_TPREL_NDX (symndx)] > 0)
4080 1.1.1.2 christos eltsiz += 4;
4081 1.1.1.2 christos }
4082 1.1.1.2 christos else
4083 1.1.1.2 christos {
4084 1.1.1.2 christos struct elf_cris_link_hash_entry *hh = elf_cris_hash_entry (h);
4085 1.1.1.2 christos if (hh->reg_got_refcount > 0)
4086 1.1.1.2 christos {
4087 1.1.1.2 christos /* The actual error-on-input is emitted elsewhere. */
4088 1.1.1.2 christos BFD_ASSERT (hh->dtp_refcount == 0 && hh->tprel_refcount == 0);
4089 1.1.1.2 christos return 4;
4090 1.1.1.2 christos }
4091 1.1.1.2 christos
4092 1.1.1.2 christos if (hh->dtp_refcount > 0)
4093 1.1.1.2 christos eltsiz += 8;
4094 1.1.1.2 christos
4095 1.1 skrll if (hh->tprel_refcount > 0)
4096 1.1 skrll eltsiz += 4;
4097 1.1.1.2 christos }
4098 1.1 skrll
4099 1.1 skrll /* We're only called when h->got.refcount is non-zero, so we must
4100 1.1 skrll have a non-zero size. */
4101 1.1.1.4 christos BFD_ASSERT (eltsiz != 0);
4102 1.1 skrll return eltsiz;
4103 1.1 skrll }
4104 1.1 skrll
4105 1.1 skrll #define ELF_ARCH bfd_arch_cris
4107 1.1 skrll #define ELF_TARGET_ID CRIS_ELF_DATA
4108 1.1 skrll #define ELF_MACHINE_CODE EM_CRIS
4109 1.1.1.2 christos #define ELF_MAXPAGESIZE 0x2000
4110 1.1.1.6 christos
4111 1.1 skrll #define TARGET_LITTLE_SYM cris_elf32_vec
4112 1.1 skrll #define TARGET_LITTLE_NAME "elf32-cris"
4113 1.1 skrll #define elf_symbol_leading_char 0
4114 1.1 skrll
4115 1.1 skrll #define elf_info_to_howto_rel NULL
4116 1.1 skrll #define elf_info_to_howto cris_info_to_howto_rela
4117 1.1 skrll #define elf_backend_relocate_section cris_elf_relocate_section
4118 1.1 skrll #define elf_backend_gc_mark_hook cris_elf_gc_mark_hook
4119 1.1 skrll #define elf_backend_plt_sym_val cris_elf_plt_sym_val
4120 1.1 skrll #define elf_backend_check_relocs cris_elf_check_relocs
4121 1.1 skrll #define elf_backend_grok_prstatus cris_elf_grok_prstatus
4122 1.1 skrll #define elf_backend_grok_psinfo cris_elf_grok_psinfo
4123 1.1 skrll
4124 1.1 skrll #define elf_backend_can_gc_sections 1
4125 1.1 skrll #define elf_backend_can_refcount 1
4126 1.1 skrll
4127 1.1 skrll #define elf_backend_object_p cris_elf_object_p
4128 1.1 skrll #define elf_backend_final_write_processing \
4129 1.1 skrll cris_elf_final_write_processing
4130 1.1 skrll #define bfd_elf32_bfd_print_private_bfd_data \
4131 1.1 skrll cris_elf_print_private_bfd_data
4132 1.1 skrll #define bfd_elf32_bfd_merge_private_bfd_data \
4133 1.1 skrll cris_elf_merge_private_bfd_data
4134 1.1.1.2 christos #define bfd_elf32_bfd_copy_private_bfd_data \
4135 1.1.1.2 christos cris_elf_copy_private_bfd_data
4136 1.1 skrll
4137 1.1 skrll #define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup
4138 1.1 skrll #define bfd_elf32_bfd_reloc_name_lookup cris_reloc_name_lookup
4139 1.1 skrll
4140 1.1 skrll #define bfd_elf32_bfd_link_hash_table_create \
4141 1.1 skrll elf_cris_link_hash_table_create
4142 1.1 skrll #define elf_backend_adjust_dynamic_symbol \
4143 1.1 skrll elf_cris_adjust_dynamic_symbol
4144 1.1 skrll #define elf_backend_copy_indirect_symbol \
4145 1.1 skrll elf_cris_copy_indirect_symbol
4146 1.1 skrll #define elf_backend_size_dynamic_sections \
4147 1.1 skrll elf_cris_size_dynamic_sections
4148 1.1 skrll #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4149 1.1 skrll #define elf_backend_finish_dynamic_symbol \
4150 1.1 skrll elf_cris_finish_dynamic_symbol
4151 1.1 skrll #define elf_backend_finish_dynamic_sections \
4152 1.1 skrll elf_cris_finish_dynamic_sections
4153 1.1 skrll #define elf_backend_create_dynamic_sections \
4154 1.1.1.2 christos _bfd_elf_create_dynamic_sections
4155 1.1.1.6 christos #define bfd_elf32_bfd_final_link \
4156 1.1.1.6 christos bfd_elf_gc_common_final_link
4157 1.1 skrll #define elf_backend_hide_symbol elf_cris_hide_symbol
4158 1.1 skrll #define elf_backend_reloc_type_class elf_cris_reloc_type_class
4159 1.1 skrll
4160 1.1 skrll #define elf_backend_want_got_plt 1
4161 1.1 skrll #define elf_backend_plt_readonly 1
4162 1.1 skrll #define elf_backend_want_plt_sym 0
4163 1.1 skrll #define elf_backend_got_header_size 12
4164 1.1 skrll #define elf_backend_got_elt_size elf_cris_got_elt_size
4165 1.1.1.6 christos #define elf_backend_dtrel_excludes_plt 1
4166 1.1.1.6 christos #define elf_backend_want_dynrelro 1
4167 1.1 skrll
4168 1.1 skrll /* Later, we my want to optimize RELA entries into REL entries for dynamic
4169 1.1 skrll linking and libraries (if it's a win of any significance). Until then,
4170 1.1 skrll take the easy route. */
4171 1.1 skrll #define elf_backend_may_use_rel_p 0
4172 1.1 skrll #define elf_backend_may_use_rela_p 1
4173 1.1.1.4 christos #define elf_backend_rela_normal 1
4174 1.1 skrll
4175 1.1 skrll #define elf_backend_linux_prpsinfo32_ugid16 TRUE
4176 1.1 skrll
4177 1.1 skrll #include "elf32-target.h"
4178 1.1 skrll
4179 1.1 skrll #undef TARGET_LITTLE_SYM
4180 #undef TARGET_LITTLE_NAME
4181 #undef elf_symbol_leading_char
4182
4183 #define TARGET_LITTLE_SYM cris_elf32_us_vec
4184 #define TARGET_LITTLE_NAME "elf32-us-cris"
4185 #define elf_symbol_leading_char '_'
4186 #undef elf32_bed
4187 #define elf32_bed elf32_us_cris_bed
4188
4189 #include "elf32-target.h"
4190