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06c15ad7 | 1 | /* CRIS-specific support for 32-bit ELF. |
2571583a | 2 | Copyright (C) 2000-2017 Free Software Foundation, Inc. |
06c15ad7 HPN |
3 | Contributed by Axis Communications AB. |
4 | Written by Hans-Peter Nilsson, based on elf32-fr30.c | |
915e5146 | 5 | PIC and shlib bits based primarily on elf32-m68k.c and elf32-i386.c. |
06c15ad7 | 6 | |
ae9a127f | 7 | This file is part of BFD, the Binary File Descriptor library. |
06c15ad7 | 8 | |
ae9a127f NC |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 11 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 12 | (at your option) any later version. |
06c15ad7 | 13 | |
ae9a127f NC |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
06c15ad7 | 18 | |
ae9a127f NC |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
21 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
22 | MA 02110-1301, USA. */ | |
06c15ad7 | 23 | |
06c15ad7 | 24 | #include "sysdep.h" |
3db64b00 | 25 | #include "bfd.h" |
06c15ad7 HPN |
26 | #include "libbfd.h" |
27 | #include "elf-bfd.h" | |
28 | #include "elf/cris.h" | |
100382c7 | 29 | #include <limits.h> |
06c15ad7 | 30 | |
2c3fc389 NC |
31 | bfd_reloc_status_type |
32 | cris_elf_pcrel_reloc (bfd *, arelent *, asymbol *, void *, | |
33 | asection *, bfd *, char **); | |
34 | static bfd_boolean | |
35 | cris_elf_set_mach_from_flags (bfd *, unsigned long); | |
915e5146 | 36 | |
2c3fc389 | 37 | /* Forward declarations. */ |
06c15ad7 HPN |
38 | static reloc_howto_type cris_elf_howto_table [] = |
39 | { | |
40 | /* This reloc does nothing. */ | |
41 | HOWTO (R_CRIS_NONE, /* type */ | |
42 | 0, /* rightshift */ | |
6346d5ca AM |
43 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
44 | 0, /* bitsize */ | |
b34976b6 | 45 | FALSE, /* pc_relative */ |
06c15ad7 | 46 | 0, /* bitpos */ |
6346d5ca | 47 | complain_overflow_dont, /* complain_on_overflow */ |
06c15ad7 HPN |
48 | bfd_elf_generic_reloc, /* special_function */ |
49 | "R_CRIS_NONE", /* name */ | |
b34976b6 | 50 | FALSE, /* partial_inplace */ |
06c15ad7 HPN |
51 | 0, /* src_mask */ |
52 | 0, /* dst_mask */ | |
b34976b6 | 53 | FALSE), /* pcrel_offset */ |
06c15ad7 HPN |
54 | |
55 | /* An 8 bit absolute relocation. */ | |
56 | HOWTO (R_CRIS_8, /* type */ | |
57 | 0, /* rightshift */ | |
58 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
59 | 8, /* bitsize */ | |
b34976b6 | 60 | FALSE, /* pc_relative */ |
06c15ad7 HPN |
61 | 0, /* bitpos */ |
62 | complain_overflow_bitfield, /* complain_on_overflow */ | |
63 | bfd_elf_generic_reloc, /* special_function */ | |
64 | "R_CRIS_8", /* name */ | |
b34976b6 | 65 | FALSE, /* partial_inplace */ |
06c15ad7 HPN |
66 | 0x0000, /* src_mask */ |
67 | 0x00ff, /* dst_mask */ | |
b34976b6 | 68 | FALSE), /* pcrel_offset */ |
06c15ad7 HPN |
69 | |
70 | /* A 16 bit absolute relocation. */ | |
71 | HOWTO (R_CRIS_16, /* type */ | |
72 | 0, /* rightshift */ | |
73 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
74 | 16, /* bitsize */ | |
b34976b6 | 75 | FALSE, /* pc_relative */ |
06c15ad7 HPN |
76 | 0, /* bitpos */ |
77 | complain_overflow_bitfield, /* complain_on_overflow */ | |
78 | bfd_elf_generic_reloc, /* special_function */ | |
79 | "R_CRIS_16", /* name */ | |
b34976b6 | 80 | FALSE, /* partial_inplace */ |
06c15ad7 HPN |
81 | 0x00000000, /* src_mask */ |
82 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 83 | FALSE), /* pcrel_offset */ |
06c15ad7 HPN |
84 | |
85 | /* A 32 bit absolute relocation. */ | |
86 | HOWTO (R_CRIS_32, /* type */ | |
87 | 0, /* rightshift */ | |
88 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
89 | 32, /* bitsize */ | |
b34976b6 | 90 | FALSE, /* pc_relative */ |
06c15ad7 | 91 | 0, /* bitpos */ |
b2efcd36 HPN |
92 | /* We don't want overflow complaints for 64-bit vma builds |
93 | for e.g. sym+0x40000000 (or actually sym-0xc0000000 in | |
94 | 32-bit ELF) where sym=0xc0001234. | |
95 | Don't do this for the PIC relocs, as we don't expect to | |
96 | see them with large offsets. */ | |
97 | complain_overflow_dont, /* complain_on_overflow */ | |
06c15ad7 HPN |
98 | bfd_elf_generic_reloc, /* special_function */ |
99 | "R_CRIS_32", /* name */ | |
b34976b6 | 100 | FALSE, /* partial_inplace */ |
06c15ad7 HPN |
101 | 0x00000000, /* src_mask */ |
102 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 103 | FALSE), /* pcrel_offset */ |
06c15ad7 | 104 | |
915e5146 | 105 | /* An 8 bit PC-relative relocation. */ |
06c15ad7 HPN |
106 | HOWTO (R_CRIS_8_PCREL, /* type */ |
107 | 0, /* rightshift */ | |
108 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
109 | 8, /* bitsize */ | |
b34976b6 | 110 | TRUE, /* pc_relative */ |
06c15ad7 HPN |
111 | 0, /* bitpos */ |
112 | complain_overflow_bitfield, /* complain_on_overflow */ | |
bac23f82 | 113 | cris_elf_pcrel_reloc, /* special_function */ |
06c15ad7 | 114 | "R_CRIS_8_PCREL", /* name */ |
b34976b6 | 115 | FALSE, /* partial_inplace */ |
06c15ad7 HPN |
116 | 0x0000, /* src_mask */ |
117 | 0x00ff, /* dst_mask */ | |
b34976b6 | 118 | TRUE), /* pcrel_offset */ |
06c15ad7 | 119 | |
915e5146 | 120 | /* A 16 bit PC-relative relocation. */ |
06c15ad7 HPN |
121 | HOWTO (R_CRIS_16_PCREL, /* type */ |
122 | 0, /* rightshift */ | |
123 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
124 | 16, /* bitsize */ | |
b34976b6 | 125 | TRUE, /* pc_relative */ |
06c15ad7 HPN |
126 | 0, /* bitpos */ |
127 | complain_overflow_bitfield, /* complain_on_overflow */ | |
bac23f82 | 128 | cris_elf_pcrel_reloc, /* special_function */ |
44aa49bb | 129 | "R_CRIS_16_PCREL", /* name */ |
b34976b6 | 130 | FALSE, /* partial_inplace */ |
06c15ad7 HPN |
131 | 0x00000000, /* src_mask */ |
132 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 133 | TRUE), /* pcrel_offset */ |
06c15ad7 | 134 | |
915e5146 | 135 | /* A 32 bit PC-relative relocation. */ |
06c15ad7 HPN |
136 | HOWTO (R_CRIS_32_PCREL, /* type */ |
137 | 0, /* rightshift */ | |
138 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
139 | 32, /* bitsize */ | |
b34976b6 | 140 | TRUE, /* pc_relative */ |
06c15ad7 HPN |
141 | 0, /* bitpos */ |
142 | complain_overflow_bitfield, /* complain_on_overflow */ | |
bac23f82 | 143 | cris_elf_pcrel_reloc, /* special_function */ |
44aa49bb | 144 | "R_CRIS_32_PCREL", /* name */ |
b34976b6 | 145 | FALSE, /* partial_inplace */ |
06c15ad7 HPN |
146 | 0x00000000, /* src_mask */ |
147 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 148 | TRUE), /* pcrel_offset */ |
06c15ad7 | 149 | |
915e5146 HPN |
150 | /* GNU extension to record C++ vtable hierarchy. */ |
151 | HOWTO (R_CRIS_GNU_VTINHERIT, /* type */ | |
06c15ad7 HPN |
152 | 0, /* rightshift */ |
153 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
154 | 0, /* bitsize */ | |
b34976b6 | 155 | FALSE, /* pc_relative */ |
06c15ad7 HPN |
156 | 0, /* bitpos */ |
157 | complain_overflow_dont, /* complain_on_overflow */ | |
158 | NULL, /* special_function */ | |
159 | "R_CRIS_GNU_VTINHERIT", /* name */ | |
b34976b6 | 160 | FALSE, /* partial_inplace */ |
06c15ad7 HPN |
161 | 0, /* src_mask */ |
162 | 0, /* dst_mask */ | |
b34976b6 | 163 | FALSE), /* pcrel_offset */ |
06c15ad7 | 164 | |
915e5146 HPN |
165 | /* GNU extension to record C++ vtable member usage. */ |
166 | HOWTO (R_CRIS_GNU_VTENTRY, /* type */ | |
06c15ad7 HPN |
167 | 0, /* rightshift */ |
168 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
169 | 0, /* bitsize */ | |
b34976b6 | 170 | FALSE, /* pc_relative */ |
06c15ad7 HPN |
171 | 0, /* bitpos */ |
172 | complain_overflow_dont, /* complain_on_overflow */ | |
173 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
174 | "R_CRIS_GNU_VTENTRY", /* name */ | |
b34976b6 | 175 | FALSE, /* partial_inplace */ |
06c15ad7 HPN |
176 | 0, /* src_mask */ |
177 | 0, /* dst_mask */ | |
b34976b6 | 178 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
179 | |
180 | /* This is used only by the dynamic linker. The symbol should exist | |
181 | both in the object being run and in some shared library. The | |
182 | dynamic linker copies the data addressed by the symbol from the | |
183 | shared library into the object, because the object being | |
184 | run has to have the data at some particular address. */ | |
185 | HOWTO (R_CRIS_COPY, /* type */ | |
186 | 0, /* rightshift */ | |
187 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
188 | 32, /* bitsize */ | |
b34976b6 | 189 | FALSE, /* pc_relative */ |
915e5146 HPN |
190 | 0, /* bitpos */ |
191 | complain_overflow_bitfield, /* complain_on_overflow */ | |
192 | bfd_elf_generic_reloc, /* special_function */ | |
193 | "R_CRIS_COPY", /* name */ | |
b34976b6 | 194 | FALSE, /* partial_inplace */ |
915e5146 HPN |
195 | 0, /* src_mask */ |
196 | 0, /* dst_mask */ | |
b34976b6 | 197 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
198 | |
199 | /* Like R_CRIS_32, but used when setting global offset table entries. */ | |
200 | HOWTO (R_CRIS_GLOB_DAT, /* type */ | |
201 | 0, /* rightshift */ | |
202 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
203 | 32, /* bitsize */ | |
b34976b6 | 204 | FALSE, /* pc_relative */ |
915e5146 HPN |
205 | 0, /* bitpos */ |
206 | complain_overflow_bitfield, /* complain_on_overflow */ | |
207 | bfd_elf_generic_reloc, /* special_function */ | |
208 | "R_CRIS_GLOB_DAT", /* name */ | |
b34976b6 | 209 | FALSE, /* partial_inplace */ |
915e5146 HPN |
210 | 0, /* src_mask */ |
211 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 212 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
213 | |
214 | /* Marks a procedure linkage table entry for a symbol. */ | |
215 | HOWTO (R_CRIS_JUMP_SLOT, /* type */ | |
216 | 0, /* rightshift */ | |
217 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
218 | 32, /* bitsize */ | |
b34976b6 | 219 | FALSE, /* pc_relative */ |
915e5146 HPN |
220 | 0, /* bitpos */ |
221 | complain_overflow_bitfield, /* complain_on_overflow */ | |
222 | bfd_elf_generic_reloc, /* special_function */ | |
223 | "R_CRIS_JUMP_SLOT", /* name */ | |
b34976b6 | 224 | FALSE, /* partial_inplace */ |
915e5146 HPN |
225 | 0, /* src_mask */ |
226 | 0, /* dst_mask */ | |
b34976b6 | 227 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
228 | |
229 | /* Used only by the dynamic linker. When the object is run, this | |
230 | longword is set to the load address of the object, plus the | |
231 | addend. */ | |
232 | HOWTO (R_CRIS_RELATIVE, /* type */ | |
233 | 0, /* rightshift */ | |
234 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
235 | 32, /* bitsize */ | |
b34976b6 | 236 | FALSE, /* pc_relative */ |
915e5146 HPN |
237 | 0, /* bitpos */ |
238 | complain_overflow_bitfield, /* complain_on_overflow */ | |
239 | bfd_elf_generic_reloc, /* special_function */ | |
240 | "R_CRIS_RELATIVE", /* name */ | |
b34976b6 | 241 | FALSE, /* partial_inplace */ |
915e5146 HPN |
242 | 0, /* src_mask */ |
243 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 244 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
245 | |
246 | /* Like R_CRIS_32, but referring to the GOT table entry for the symbol. */ | |
247 | HOWTO (R_CRIS_16_GOT, /* type */ | |
248 | 0, /* rightshift */ | |
249 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
250 | 16, /* bitsize */ | |
b34976b6 | 251 | FALSE, /* pc_relative */ |
915e5146 HPN |
252 | 0, /* bitpos */ |
253 | complain_overflow_bitfield, /* complain_on_overflow */ | |
254 | bfd_elf_generic_reloc, /* special_function */ | |
255 | "R_CRIS_16_GOT", /* name */ | |
b34976b6 | 256 | FALSE, /* partial_inplace */ |
915e5146 HPN |
257 | 0, /* src_mask */ |
258 | 0xffff, /* dst_mask */ | |
b34976b6 | 259 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
260 | |
261 | HOWTO (R_CRIS_32_GOT, /* type */ | |
262 | 0, /* rightshift */ | |
263 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
264 | 32, /* bitsize */ | |
b34976b6 | 265 | FALSE, /* pc_relative */ |
915e5146 HPN |
266 | 0, /* bitpos */ |
267 | complain_overflow_bitfield, /* complain_on_overflow */ | |
268 | bfd_elf_generic_reloc, /* special_function */ | |
269 | "R_CRIS_32_GOT", /* name */ | |
b34976b6 | 270 | FALSE, /* partial_inplace */ |
915e5146 HPN |
271 | 0, /* src_mask */ |
272 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 273 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
274 | |
275 | /* Like R_CRIS_32_GOT, but referring to (and requesting a) PLT part of | |
276 | the GOT table for the symbol. */ | |
277 | HOWTO (R_CRIS_16_GOTPLT, /* type */ | |
278 | 0, /* rightshift */ | |
279 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
280 | 16, /* bitsize */ | |
b34976b6 | 281 | FALSE, /* pc_relative */ |
915e5146 HPN |
282 | 0, /* bitpos */ |
283 | complain_overflow_bitfield, /* complain_on_overflow */ | |
284 | bfd_elf_generic_reloc, /* special_function */ | |
285 | "R_CRIS_16_GOTPLT", /* name */ | |
b34976b6 | 286 | FALSE, /* partial_inplace */ |
915e5146 HPN |
287 | 0, /* src_mask */ |
288 | 0xffff, /* dst_mask */ | |
b34976b6 | 289 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
290 | |
291 | HOWTO (R_CRIS_32_GOTPLT, /* type */ | |
292 | 0, /* rightshift */ | |
293 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
294 | 32, /* bitsize */ | |
b34976b6 | 295 | FALSE, /* pc_relative */ |
915e5146 HPN |
296 | 0, /* bitpos */ |
297 | complain_overflow_bitfield, /* complain_on_overflow */ | |
298 | bfd_elf_generic_reloc, /* special_function */ | |
299 | "R_CRIS_32_GOTPLT", /* name */ | |
b34976b6 | 300 | FALSE, /* partial_inplace */ |
915e5146 HPN |
301 | 0, /* src_mask */ |
302 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 303 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
304 | |
305 | /* A 32-bit offset from GOT to (local const) symbol: no GOT entry should | |
306 | be necessary. */ | |
307 | HOWTO (R_CRIS_32_GOTREL, /* type */ | |
308 | 0, /* rightshift */ | |
309 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
310 | 32, /* bitsize */ | |
b34976b6 | 311 | FALSE, /* pc_relative */ |
915e5146 HPN |
312 | 0, /* bitpos */ |
313 | complain_overflow_bitfield, /* complain_on_overflow */ | |
314 | bfd_elf_generic_reloc, /* special_function */ | |
315 | "R_CRIS_32_GOTREL", /* name */ | |
b34976b6 | 316 | FALSE, /* partial_inplace */ |
915e5146 HPN |
317 | 0, /* src_mask */ |
318 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 319 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
320 | |
321 | /* A 32-bit offset from GOT to entry for this symbol in PLT and request | |
322 | to create PLT entry for symbol. */ | |
323 | HOWTO (R_CRIS_32_PLT_GOTREL, /* type */ | |
324 | 0, /* rightshift */ | |
325 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
326 | 32, /* bitsize */ | |
b34976b6 | 327 | FALSE, /* pc_relative */ |
915e5146 HPN |
328 | 0, /* bitpos */ |
329 | complain_overflow_bitfield, /* complain_on_overflow */ | |
330 | bfd_elf_generic_reloc, /* special_function */ | |
331 | "R_CRIS_32_PLT_GOTREL", /* name */ | |
b34976b6 | 332 | FALSE, /* partial_inplace */ |
915e5146 HPN |
333 | 0, /* src_mask */ |
334 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 335 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
336 | |
337 | /* A 32-bit offset from PC (location after the relocation) + addend to | |
338 | entry for this symbol in PLT and request to create PLT entry for | |
339 | symbol. */ | |
340 | HOWTO (R_CRIS_32_PLT_PCREL, /* type */ | |
341 | 0, /* rightshift */ | |
342 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
343 | 32, /* bitsize */ | |
b34976b6 | 344 | TRUE, /* pc_relative */ |
915e5146 HPN |
345 | 0, /* bitpos */ |
346 | complain_overflow_bitfield, /* complain_on_overflow */ | |
bac23f82 | 347 | cris_elf_pcrel_reloc, /* special_function */ |
915e5146 | 348 | "R_CRIS_32_PLT_PCREL", /* name */ |
b34976b6 | 349 | FALSE, /* partial_inplace */ |
915e5146 HPN |
350 | 0, /* src_mask */ |
351 | 0xffffffff, /* dst_mask */ | |
3926fc54 HPN |
352 | TRUE), /* pcrel_offset */ |
353 | ||
354 | /* We don't handle these in any special manner and cross-format | |
355 | linking is not supported; just recognize them enough to pass them | |
356 | around. FIXME: do the same for most PIC relocs and add sanity | |
357 | tests to actually refuse gracefully to handle these and PIC | |
358 | relocs for cross-format linking. */ | |
359 | #define TLSHOWTO32(name) \ | |
360 | HOWTO (name, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, \ | |
361 | bfd_elf_generic_reloc, #name, FALSE, 0, 0xffffffff, FALSE) | |
100382c7 HPN |
362 | #define TLSHOWTO16X(name, X) \ |
363 | HOWTO (name, 0, 1, 16, FALSE, 0, complain_overflow_ ## X, \ | |
3926fc54 | 364 | bfd_elf_generic_reloc, #name, FALSE, 0, 0xffff, FALSE) |
100382c7 HPN |
365 | #define TLSHOWTO16(name) TLSHOWTO16X(name, unsigned) |
366 | #define TLSHOWTO16S(name) TLSHOWTO16X(name, signed) | |
3926fc54 HPN |
367 | |
368 | TLSHOWTO32 (R_CRIS_32_GOT_GD), | |
369 | TLSHOWTO16 (R_CRIS_16_GOT_GD), | |
370 | TLSHOWTO32 (R_CRIS_32_GD), | |
371 | TLSHOWTO32 (R_CRIS_DTP), | |
372 | TLSHOWTO32 (R_CRIS_32_DTPREL), | |
100382c7 | 373 | TLSHOWTO16S (R_CRIS_16_DTPREL), |
3926fc54 | 374 | TLSHOWTO32 (R_CRIS_32_GOT_TPREL), |
100382c7 | 375 | TLSHOWTO16S (R_CRIS_16_GOT_TPREL), |
3926fc54 | 376 | TLSHOWTO32 (R_CRIS_32_TPREL), |
100382c7 | 377 | TLSHOWTO16S (R_CRIS_16_TPREL), |
75f500d7 HPN |
378 | TLSHOWTO32 (R_CRIS_DTPMOD), |
379 | TLSHOWTO32 (R_CRIS_32_IE) | |
06c15ad7 HPN |
380 | }; |
381 | \f | |
382 | /* Map BFD reloc types to CRIS ELF reloc types. */ | |
383 | ||
384 | struct cris_reloc_map | |
385 | { | |
386 | bfd_reloc_code_real_type bfd_reloc_val; | |
387 | unsigned int cris_reloc_val; | |
388 | }; | |
389 | ||
390 | static const struct cris_reloc_map cris_reloc_map [] = | |
391 | { | |
392 | { BFD_RELOC_NONE, R_CRIS_NONE }, | |
393 | { BFD_RELOC_8, R_CRIS_8 }, | |
394 | { BFD_RELOC_16, R_CRIS_16 }, | |
395 | { BFD_RELOC_32, R_CRIS_32 }, | |
396 | { BFD_RELOC_8_PCREL, R_CRIS_8_PCREL }, | |
397 | { BFD_RELOC_16_PCREL, R_CRIS_16_PCREL }, | |
398 | { BFD_RELOC_32_PCREL, R_CRIS_32_PCREL }, | |
399 | { BFD_RELOC_VTABLE_INHERIT, R_CRIS_GNU_VTINHERIT }, | |
915e5146 HPN |
400 | { BFD_RELOC_VTABLE_ENTRY, R_CRIS_GNU_VTENTRY }, |
401 | { BFD_RELOC_CRIS_COPY, R_CRIS_COPY }, | |
402 | { BFD_RELOC_CRIS_GLOB_DAT, R_CRIS_GLOB_DAT }, | |
403 | { BFD_RELOC_CRIS_JUMP_SLOT, R_CRIS_JUMP_SLOT }, | |
404 | { BFD_RELOC_CRIS_RELATIVE, R_CRIS_RELATIVE }, | |
405 | { BFD_RELOC_CRIS_16_GOT, R_CRIS_16_GOT }, | |
406 | { BFD_RELOC_CRIS_32_GOT, R_CRIS_32_GOT }, | |
407 | { BFD_RELOC_CRIS_16_GOTPLT, R_CRIS_16_GOTPLT }, | |
408 | { BFD_RELOC_CRIS_32_GOTPLT, R_CRIS_32_GOTPLT }, | |
409 | { BFD_RELOC_CRIS_32_GOTREL, R_CRIS_32_GOTREL }, | |
410 | { BFD_RELOC_CRIS_32_PLT_GOTREL, R_CRIS_32_PLT_GOTREL }, | |
3926fc54 HPN |
411 | { BFD_RELOC_CRIS_32_PLT_PCREL, R_CRIS_32_PLT_PCREL }, |
412 | { BFD_RELOC_CRIS_32_GOT_GD, R_CRIS_32_GOT_GD }, | |
413 | { BFD_RELOC_CRIS_16_GOT_GD, R_CRIS_16_GOT_GD }, | |
414 | { BFD_RELOC_CRIS_32_GD, R_CRIS_32_GD }, | |
415 | { BFD_RELOC_CRIS_DTP, R_CRIS_DTP }, | |
416 | { BFD_RELOC_CRIS_32_DTPREL, R_CRIS_32_DTPREL }, | |
417 | { BFD_RELOC_CRIS_16_DTPREL, R_CRIS_16_DTPREL }, | |
418 | { BFD_RELOC_CRIS_32_GOT_TPREL, R_CRIS_32_GOT_TPREL }, | |
419 | { BFD_RELOC_CRIS_16_GOT_TPREL, R_CRIS_16_GOT_TPREL }, | |
420 | { BFD_RELOC_CRIS_32_TPREL, R_CRIS_32_TPREL }, | |
421 | { BFD_RELOC_CRIS_16_TPREL, R_CRIS_16_TPREL }, | |
75f500d7 HPN |
422 | { BFD_RELOC_CRIS_DTPMOD, R_CRIS_DTPMOD }, |
423 | { BFD_RELOC_CRIS_32_IE, R_CRIS_32_IE } | |
06c15ad7 HPN |
424 | }; |
425 | ||
426 | static reloc_howto_type * | |
2c3fc389 NC |
427 | cris_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, |
428 | bfd_reloc_code_real_type code) | |
06c15ad7 | 429 | { |
908d94bf | 430 | unsigned int i; |
06c15ad7 | 431 | |
908d94bf | 432 | for (i = 0; i < sizeof (cris_reloc_map) / sizeof (cris_reloc_map[0]); i++) |
06c15ad7 HPN |
433 | if (cris_reloc_map [i].bfd_reloc_val == code) |
434 | return & cris_elf_howto_table [cris_reloc_map[i].cris_reloc_val]; | |
a7c10850 | 435 | |
06c15ad7 HPN |
436 | return NULL; |
437 | } | |
438 | ||
157090f7 AM |
439 | static reloc_howto_type * |
440 | cris_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name) | |
441 | { | |
442 | unsigned int i; | |
443 | ||
444 | for (i = 0; | |
445 | i < sizeof (cris_elf_howto_table) / sizeof (cris_elf_howto_table[0]); | |
446 | i++) | |
447 | if (cris_elf_howto_table[i].name != NULL | |
448 | && strcasecmp (cris_elf_howto_table[i].name, r_name) == 0) | |
449 | return &cris_elf_howto_table[i]; | |
450 | ||
451 | return NULL; | |
452 | } | |
453 | ||
06c15ad7 HPN |
454 | /* Set the howto pointer for an CRIS ELF reloc. */ |
455 | ||
456 | static void | |
2c3fc389 NC |
457 | cris_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED, |
458 | arelent * cache_ptr, | |
459 | Elf_Internal_Rela * dst) | |
06c15ad7 | 460 | { |
100382c7 | 461 | enum elf_cris_reloc_type r_type; |
06c15ad7 HPN |
462 | |
463 | r_type = ELF32_R_TYPE (dst->r_info); | |
5860e3f8 NC |
464 | if (r_type >= R_CRIS_max) |
465 | { | |
695344c0 | 466 | /* xgettext:c-format */ |
64d29018 | 467 | _bfd_error_handler (_("%B: invalid CRIS reloc number: %d"), abfd, r_type); |
5860e3f8 NC |
468 | r_type = 0; |
469 | } | |
06c15ad7 HPN |
470 | cache_ptr->howto = & cris_elf_howto_table [r_type]; |
471 | } | |
bac23f82 HPN |
472 | |
473 | bfd_reloc_status_type | |
2c3fc389 NC |
474 | cris_elf_pcrel_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
475 | arelent *reloc_entry, | |
476 | asymbol *symbol, | |
477 | void * data ATTRIBUTE_UNUSED, | |
478 | asection *input_section, | |
479 | bfd *output_bfd, | |
480 | char **error_message ATTRIBUTE_UNUSED) | |
bac23f82 HPN |
481 | { |
482 | /* By default (using only bfd_elf_generic_reloc when linking to | |
483 | non-ELF formats) PC-relative relocs are relative to the beginning | |
484 | of the reloc. CRIS PC-relative relocs are relative to the position | |
485 | *after* the reloc because that's what pre-CRISv32 PC points to | |
486 | after reading an insn field with that reloc. (For CRISv32, PC is | |
487 | actually relative to the start of the insn, but we keep the old | |
488 | definition.) Still, we use as much generic machinery as we can. | |
489 | ||
490 | Only adjust when doing a final link. */ | |
491 | if (output_bfd == (bfd *) NULL) | |
492 | reloc_entry->addend -= 1 << reloc_entry->howto->size; | |
493 | ||
494 | return | |
495 | bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
496 | input_section, output_bfd, error_message); | |
497 | } | |
06c15ad7 | 498 | \f |
bac23f82 HPN |
499 | /* Support for core dump NOTE sections. |
500 | The slightly unintuitive code layout is an attempt to keep at least | |
501 | some similarities with other ports, hoping to simplify general | |
502 | changes, while still keeping Linux/CRIS and Linux/CRISv32 code apart. */ | |
72209a1f | 503 | |
b34976b6 | 504 | static bfd_boolean |
2c3fc389 | 505 | cris_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
72209a1f HPN |
506 | { |
507 | int offset; | |
eea6121a | 508 | size_t size; |
72209a1f | 509 | |
bac23f82 HPN |
510 | if (bfd_get_mach (abfd) == bfd_mach_cris_v32) |
511 | switch (note->descsz) | |
512 | { | |
513 | default: | |
514 | return FALSE; | |
515 | ||
516 | case 202: /* Linux/CRISv32 */ | |
517 | /* pr_cursig */ | |
228e534f | 518 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
bac23f82 HPN |
519 | |
520 | /* pr_pid */ | |
228e534f | 521 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 22); |
bac23f82 HPN |
522 | |
523 | /* pr_reg */ | |
524 | offset = 70; | |
525 | size = 128; | |
526 | ||
527 | break; | |
528 | } | |
529 | else | |
530 | switch (note->descsz) | |
531 | { | |
72209a1f | 532 | default: |
b34976b6 | 533 | return FALSE; |
72209a1f | 534 | |
bc0d28ee | 535 | case 214: /* Linux/CRIS */ |
72209a1f | 536 | /* pr_cursig */ |
228e534f | 537 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
72209a1f HPN |
538 | |
539 | /* pr_pid */ | |
228e534f | 540 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 22); |
72209a1f HPN |
541 | |
542 | /* pr_reg */ | |
543 | offset = 70; | |
eea6121a | 544 | size = 140; |
72209a1f HPN |
545 | |
546 | break; | |
bac23f82 | 547 | } |
72209a1f HPN |
548 | |
549 | /* Make a ".reg/999" section. */ | |
550 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 551 | size, note->descpos + offset); |
72209a1f HPN |
552 | } |
553 | ||
b34976b6 | 554 | static bfd_boolean |
2c3fc389 | 555 | cris_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
72209a1f | 556 | { |
bac23f82 HPN |
557 | if (bfd_get_mach (abfd) == bfd_mach_cris_v32) |
558 | switch (note->descsz) | |
559 | { | |
560 | default: | |
561 | return FALSE; | |
562 | ||
563 | case 124: /* Linux/CRISv32 elf_prpsinfo */ | |
228e534f | 564 | elf_tdata (abfd)->core->program |
bac23f82 | 565 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); |
228e534f | 566 | elf_tdata (abfd)->core->command |
bac23f82 HPN |
567 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); |
568 | } | |
569 | else | |
570 | switch (note->descsz) | |
571 | { | |
72209a1f | 572 | default: |
b34976b6 | 573 | return FALSE; |
72209a1f HPN |
574 | |
575 | case 124: /* Linux/CRIS elf_prpsinfo */ | |
228e534f | 576 | elf_tdata (abfd)->core->program |
bac23f82 | 577 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); |
228e534f | 578 | elf_tdata (abfd)->core->command |
bac23f82 HPN |
579 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); |
580 | } | |
72209a1f HPN |
581 | |
582 | /* Note that for some reason, a spurious space is tacked | |
583 | onto the end of the args in some (at least one anyway) | |
584 | implementations, so strip it off if it exists. */ | |
585 | ||
586 | { | |
228e534f | 587 | char *command = elf_tdata (abfd)->core->command; |
72209a1f HPN |
588 | int n = strlen (command); |
589 | ||
590 | if (0 < n && command[n - 1] == ' ') | |
591 | command[n - 1] = '\0'; | |
592 | } | |
593 | ||
b34976b6 | 594 | return TRUE; |
72209a1f HPN |
595 | } |
596 | \f | |
915e5146 HPN |
597 | /* The name of the dynamic interpreter. This is put in the .interp |
598 | section. */ | |
599 | ||
600 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
601 | ||
602 | /* The size in bytes of an entry in the procedure linkage table. */ | |
603 | ||
604 | #define PLT_ENTRY_SIZE 20 | |
bac23f82 | 605 | #define PLT_ENTRY_SIZE_V32 26 |
915e5146 HPN |
606 | |
607 | /* The first entry in an absolute procedure linkage table looks like this. */ | |
608 | ||
609 | static const bfd_byte elf_cris_plt0_entry[PLT_ENTRY_SIZE] = | |
610 | { | |
611 | 0xfc, 0xe1, | |
cedb70c5 | 612 | 0x7e, 0x7e, /* push mof. */ |
915e5146 HPN |
613 | 0x7f, 0x0d, /* (dip [pc+]) */ |
614 | 0, 0, 0, 0, /* Replaced with address of .got + 4. */ | |
615 | 0x30, 0x7a, /* move [...],mof */ | |
616 | 0x7f, 0x0d, /* (dip [pc+]) */ | |
617 | 0, 0, 0, 0, /* Replaced with address of .got + 8. */ | |
bac23f82 HPN |
618 | 0x30, 0x09 /* jump [...] */ |
619 | }; | |
620 | ||
621 | static const bfd_byte elf_cris_plt0_entry_v32[PLT_ENTRY_SIZE_V32] = | |
622 | { | |
623 | 0x84, 0xe2, /* subq 4,$sp */ | |
624 | 0x6f, 0xfe, /* move.d 0,$acr */ | |
625 | 0, 0, 0, 0, /* Replaced by address of .got + 4. */ | |
626 | 0x7e, 0x7a, /* move $mof,[$sp] */ | |
627 | 0x3f, 0x7a, /* move [$acr],$mof */ | |
628 | 0x04, 0xf2, /* addq 4,acr */ | |
629 | 0x6f, 0xfa, /* move.d [$acr],$acr */ | |
630 | 0xbf, 0x09, /* jump $acr */ | |
631 | 0xb0, 0x05, /* nop */ | |
632 | 0, 0 /* Pad out to 26 bytes. */ | |
915e5146 HPN |
633 | }; |
634 | ||
635 | /* Subsequent entries in an absolute procedure linkage table look like | |
636 | this. */ | |
637 | ||
638 | static const bfd_byte elf_cris_plt_entry[PLT_ENTRY_SIZE] = | |
639 | { | |
640 | 0x7f, 0x0d, /* (dip [pc+]) */ | |
641 | 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */ | |
642 | 0x30, 0x09, /* jump [...] */ | |
643 | 0x3f, 0x7e, /* move [pc+],mof */ | |
644 | 0, 0, 0, 0, /* Replaced with offset into relocation table. */ | |
645 | 0x2f, 0xfe, /* add.d [pc+],pc */ | |
646 | 0xec, 0xff, | |
647 | 0xff, 0xff /* Replaced with offset to start of .plt. */ | |
648 | }; | |
649 | ||
bac23f82 HPN |
650 | static const bfd_byte elf_cris_plt_entry_v32[PLT_ENTRY_SIZE_V32] = |
651 | { | |
652 | 0x6f, 0xfe, /* move.d 0,$acr */ | |
653 | 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */ | |
654 | 0x6f, 0xfa, /* move.d [$acr],$acr */ | |
655 | 0xbf, 0x09, /* jump $acr */ | |
656 | 0xb0, 0x05, /* nop */ | |
657 | 0x3f, 0x7e, /* move 0,mof */ | |
658 | 0, 0, 0, 0, /* Replaced with offset into relocation table. */ | |
659 | 0xbf, 0x0e, /* ba start_of_plt0_entry */ | |
660 | 0, 0, 0, 0, /* Replaced with offset to plt0 entry. */ | |
661 | 0xb0, 0x05 /* nop */ | |
662 | }; | |
663 | ||
915e5146 HPN |
664 | /* The first entry in a PIC procedure linkage table looks like this. */ |
665 | ||
666 | static const bfd_byte elf_cris_pic_plt0_entry[PLT_ENTRY_SIZE] = | |
667 | { | |
668 | 0xfc, 0xe1, 0x7e, 0x7e, /* push mof */ | |
669 | 0x04, 0x01, 0x30, 0x7a, /* move [r0+4],mof */ | |
670 | 0x08, 0x01, 0x30, 0x09, /* jump [r0+8] */ | |
671 | 0, 0, 0, 0, 0, 0, 0, 0, /* Pad out to 20 bytes. */ | |
672 | }; | |
673 | ||
bac23f82 HPN |
674 | static const bfd_byte elf_cris_pic_plt0_entry_v32[PLT_ENTRY_SIZE_V32] = |
675 | { | |
676 | 0x84, 0xe2, /* subq 4,$sp */ | |
677 | 0x04, 0x01, /* addoq 4,$r0,$acr */ | |
678 | 0x7e, 0x7a, /* move $mof,[$sp] */ | |
679 | 0x3f, 0x7a, /* move [$acr],$mof */ | |
680 | 0x04, 0xf2, /* addq 4,$acr */ | |
681 | 0x6f, 0xfa, /* move.d [$acr],$acr */ | |
682 | 0xbf, 0x09, /* jump $acr */ | |
683 | 0xb0, 0x05, /* nop */ | |
684 | 0, 0, /* Pad out to 26 bytes. */ | |
685 | 0, 0, 0, 0, | |
686 | 0, 0, 0, 0 | |
687 | }; | |
688 | ||
915e5146 HPN |
689 | /* Subsequent entries in a PIC procedure linkage table look like this. */ |
690 | ||
691 | static const bfd_byte elf_cris_pic_plt_entry[PLT_ENTRY_SIZE] = | |
692 | { | |
693 | 0x6f, 0x0d, /* (bdap [pc+].d,r0) */ | |
694 | 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */ | |
695 | 0x30, 0x09, /* jump [...] */ | |
696 | 0x3f, 0x7e, /* move [pc+],mof */ | |
697 | 0, 0, 0, 0, /* Replaced with offset into relocation table. */ | |
698 | 0x2f, 0xfe, /* add.d [pc+],pc */ | |
699 | 0xec, 0xff, /* Replaced with offset to start of .plt. */ | |
700 | 0xff, 0xff | |
701 | }; | |
bac23f82 HPN |
702 | |
703 | static const bfd_byte elf_cris_pic_plt_entry_v32[PLT_ENTRY_SIZE_V32] = | |
704 | { | |
705 | 0x6f, 0x0d, /* addo.d 0,$r0,$acr */ | |
706 | 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */ | |
707 | 0x6f, 0xfa, /* move.d [$acr],$acr */ | |
708 | 0xbf, 0x09, /* jump $acr */ | |
709 | 0xb0, 0x05, /* nop */ | |
710 | 0x3f, 0x7e, /* move relocoffs,$mof */ | |
711 | 0, 0, 0, 0, /* Replaced with offset into relocation table. */ | |
712 | 0xbf, 0x0e, /* ba start_of_plt */ | |
713 | 0, 0, 0, 0, /* Replaced with offset to start of .plt. */ | |
714 | 0xb0, 0x05 /* nop */ | |
715 | }; | |
915e5146 HPN |
716 | \f |
717 | /* We copy elf32-m68k.c and elf32-i386.c for the basic linker hash bits | |
718 | (and most other PIC/shlib stuff). Check that we don't drift away | |
719 | without reason. | |
720 | ||
721 | The CRIS linker, like the m68k and i386 linkers (and probably the rest | |
722 | too) needs to keep track of the number of relocs that it decides to | |
723 | copy in check_relocs for each symbol. This is so that it can discard | |
724 | PC relative relocs if it doesn't need them when linking with | |
725 | -Bsymbolic. We store the information in a field extending the regular | |
726 | ELF linker hash table. */ | |
727 | ||
728 | /* This structure keeps track of the number of PC relative relocs we have | |
729 | copied for a given symbol. */ | |
730 | ||
731 | struct elf_cris_pcrel_relocs_copied | |
732 | { | |
733 | /* Next section. */ | |
734 | struct elf_cris_pcrel_relocs_copied *next; | |
0d08de41 | 735 | |
915e5146 HPN |
736 | /* A section in dynobj. */ |
737 | asection *section; | |
0d08de41 | 738 | |
915e5146 HPN |
739 | /* Number of relocs copied in this section. */ |
740 | bfd_size_type count; | |
0d08de41 HPN |
741 | |
742 | /* Example of reloc being copied, for message. */ | |
743 | enum elf_cris_reloc_type r_type; | |
915e5146 HPN |
744 | }; |
745 | ||
746 | /* CRIS ELF linker hash entry. */ | |
747 | ||
748 | struct elf_cris_link_hash_entry | |
749 | { | |
750 | struct elf_link_hash_entry root; | |
751 | ||
752 | /* Number of PC relative relocs copied for this symbol. */ | |
753 | struct elf_cris_pcrel_relocs_copied *pcrel_relocs_copied; | |
754 | ||
755 | /* The GOTPLT references are CRIS-specific; the goal is to avoid having | |
756 | both a general GOT and a PLT-specific GOT entry for the same symbol, | |
757 | when it is referenced both as a function and as a function pointer. | |
758 | ||
759 | Number of GOTPLT references for a function. */ | |
760 | bfd_signed_vma gotplt_refcount; | |
761 | ||
762 | /* Actual GOTPLT index for this symbol, if applicable, or zero if not | |
763 | (zero is never used as an index). FIXME: We should be able to fold | |
764 | this with gotplt_refcount in a union, like the got and plt unions in | |
765 | elf_link_hash_entry. */ | |
766 | bfd_size_type gotplt_offset; | |
100382c7 HPN |
767 | |
768 | /* The root.got.refcount is the sum of the regular reference counts | |
769 | (this) and those members below. We have to keep a separate count | |
770 | to track when we've found the first (or last) reference to a | |
771 | regular got entry. The offset is in root.got.offset. */ | |
772 | bfd_signed_vma reg_got_refcount; | |
773 | ||
774 | /* Similar to the above, the number of reloc references to this | |
775 | symbols that need a R_CRIS_32_TPREL slot. The offset is in | |
776 | root.got.offset, because this and .dtp_refcount can't validly | |
777 | happen when there's also a regular GOT entry; that's invalid | |
778 | input for which an error is emitted. */ | |
779 | bfd_signed_vma tprel_refcount; | |
780 | ||
781 | /* Similar to the above, the number of reloc references to this | |
782 | symbols that need a R_CRIS_DTP slot. The offset is in | |
783 | root.got.offset; plus 4 if .tprel_refcount > 0. */ | |
784 | bfd_signed_vma dtp_refcount; | |
915e5146 HPN |
785 | }; |
786 | ||
2c3fc389 NC |
787 | static bfd_boolean |
788 | elf_cris_discard_excess_dso_dynamics (struct elf_cris_link_hash_entry *, | |
789 | void * ); | |
790 | static bfd_boolean | |
791 | elf_cris_discard_excess_program_dynamics (struct elf_cris_link_hash_entry *, | |
792 | void *); | |
793 | ||
100382c7 HPN |
794 | /* The local_got_refcounts and local_got_offsets are a multiple of |
795 | LSNUM in size, namely LGOT_ALLOC_NELTS_FOR(LSNUM) (plus one for the | |
796 | refcount for GOT itself, see code), with the summary / group offset | |
797 | for local symbols located at offset N, reference counts for | |
798 | ordinary (address) relocs at offset N + LSNUM, for R_CRIS_DTP | |
799 | relocs at offset N + 2*LSNUM, and for R_CRIS_32_TPREL relocs at N + | |
800 | 3*LSNUM. */ | |
801 | ||
802 | #define LGOT_REG_NDX(x) ((x) + symtab_hdr->sh_info) | |
803 | #define LGOT_DTP_NDX(x) ((x) + 2 * symtab_hdr->sh_info) | |
804 | #define LGOT_TPREL_NDX(x) ((x) + 3 * symtab_hdr->sh_info) | |
805 | #define LGOT_ALLOC_NELTS_FOR(x) ((x) * 4) | |
806 | ||
915e5146 HPN |
807 | /* CRIS ELF linker hash table. */ |
808 | ||
809 | struct elf_cris_link_hash_table | |
810 | { | |
811 | struct elf_link_hash_table root; | |
812 | ||
813 | /* We can't use the PLT offset and calculate to get the GOTPLT offset, | |
814 | since we try and avoid creating GOTPLT:s when there's already a GOT. | |
815 | Instead, we keep and update the next available index here. */ | |
816 | bfd_size_type next_gotplt_entry; | |
100382c7 HPN |
817 | |
818 | /* The number of R_CRIS_32_DTPREL and R_CRIS_16_DTPREL that have | |
819 | been seen for any input; if != 0, then the constant-offset | |
820 | R_CRIS_DTPMOD is needed for this DSO/executable. This turns | |
821 | negative at relocation, so that we don't need an extra flag for | |
822 | when the reloc is output. */ | |
823 | bfd_signed_vma dtpmod_refcount; | |
915e5146 HPN |
824 | }; |
825 | ||
826 | /* Traverse a CRIS ELF linker hash table. */ | |
827 | ||
828 | #define elf_cris_link_hash_traverse(table, func, info) \ | |
829 | (elf_link_hash_traverse \ | |
830 | (&(table)->root, \ | |
4dfe6ac6 | 831 | (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
915e5146 HPN |
832 | (info))) |
833 | ||
834 | /* Get the CRIS ELF linker hash table from a link_info structure. */ | |
835 | ||
836 | #define elf_cris_hash_table(p) \ | |
4dfe6ac6 NC |
837 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
838 | == CRIS_ELF_DATA ? ((struct elf_cris_link_hash_table *) ((p)->hash)) : NULL) | |
915e5146 | 839 | |
100382c7 HPN |
840 | /* Get the CRIS ELF linker hash entry from a regular hash entry (the |
841 | "parent class"). The .root reference is just a simple type | |
842 | check on the argument. */ | |
843 | ||
844 | #define elf_cris_hash_entry(p) \ | |
845 | ((struct elf_cris_link_hash_entry *) (&(p)->root)) | |
846 | ||
915e5146 HPN |
847 | /* Create an entry in a CRIS ELF linker hash table. */ |
848 | ||
849 | static struct bfd_hash_entry * | |
4dfe6ac6 NC |
850 | elf_cris_link_hash_newfunc (struct bfd_hash_entry *entry, |
851 | struct bfd_hash_table *table, | |
852 | const char *string) | |
915e5146 HPN |
853 | { |
854 | struct elf_cris_link_hash_entry *ret = | |
855 | (struct elf_cris_link_hash_entry *) entry; | |
856 | ||
857 | /* Allocate the structure if it has not already been allocated by a | |
858 | subclass. */ | |
859 | if (ret == (struct elf_cris_link_hash_entry *) NULL) | |
860 | ret = ((struct elf_cris_link_hash_entry *) | |
861 | bfd_hash_allocate (table, | |
862 | sizeof (struct elf_cris_link_hash_entry))); | |
863 | if (ret == (struct elf_cris_link_hash_entry *) NULL) | |
864 | return (struct bfd_hash_entry *) ret; | |
865 | ||
866 | /* Call the allocation method of the superclass. */ | |
867 | ret = ((struct elf_cris_link_hash_entry *) | |
868 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
869 | table, string)); | |
870 | if (ret != (struct elf_cris_link_hash_entry *) NULL) | |
871 | { | |
872 | ret->pcrel_relocs_copied = NULL; | |
873 | ret->gotplt_refcount = 0; | |
874 | ret->gotplt_offset = 0; | |
100382c7 HPN |
875 | ret->dtp_refcount = 0; |
876 | ret->tprel_refcount = 0; | |
877 | ret->reg_got_refcount = 0; | |
915e5146 HPN |
878 | } |
879 | ||
880 | return (struct bfd_hash_entry *) ret; | |
881 | } | |
882 | ||
883 | /* Create a CRIS ELF linker hash table. */ | |
884 | ||
885 | static struct bfd_link_hash_table * | |
4dfe6ac6 | 886 | elf_cris_link_hash_table_create (bfd *abfd) |
915e5146 HPN |
887 | { |
888 | struct elf_cris_link_hash_table *ret; | |
dc810e39 | 889 | bfd_size_type amt = sizeof (struct elf_cris_link_hash_table); |
915e5146 | 890 | |
7bf52ea2 | 891 | ret = ((struct elf_cris_link_hash_table *) bfd_zmalloc (amt)); |
915e5146 HPN |
892 | if (ret == (struct elf_cris_link_hash_table *) NULL) |
893 | return NULL; | |
894 | ||
66eb6687 AM |
895 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
896 | elf_cris_link_hash_newfunc, | |
4dfe6ac6 NC |
897 | sizeof (struct elf_cris_link_hash_entry), |
898 | CRIS_ELF_DATA)) | |
915e5146 | 899 | { |
e2d34d7d | 900 | free (ret); |
915e5146 HPN |
901 | return NULL; |
902 | } | |
903 | ||
904 | /* Initialize to skip over the first three entries in the gotplt; they | |
905 | are used for run-time symbol evaluation. */ | |
906 | ret->next_gotplt_entry = 12; | |
907 | ||
908 | return &ret->root.root; | |
909 | } | |
910 | \f | |
06c15ad7 | 911 | /* Perform a single relocation. By default we use the standard BFD |
915e5146 | 912 | routines, with a few tweaks. */ |
06c15ad7 HPN |
913 | |
914 | static bfd_reloc_status_type | |
2c3fc389 NC |
915 | cris_final_link_relocate (reloc_howto_type * howto, |
916 | bfd * input_bfd, | |
917 | asection * input_section, | |
918 | bfd_byte * contents, | |
919 | Elf_Internal_Rela * rel, | |
920 | bfd_vma relocation) | |
06c15ad7 | 921 | { |
915e5146 | 922 | bfd_reloc_status_type r; |
100382c7 | 923 | enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info); |
915e5146 HPN |
924 | |
925 | /* PC-relative relocations are relative to the position *after* | |
926 | the reloc. Note that for R_CRIS_8_PCREL the adjustment is | |
927 | not a single byte, since PC must be 16-bit-aligned. */ | |
100382c7 | 928 | switch (r_type) |
915e5146 HPN |
929 | { |
930 | /* Check that the 16-bit GOT relocs are positive. */ | |
931 | case R_CRIS_16_GOTPLT: | |
932 | case R_CRIS_16_GOT: | |
933 | if ((bfd_signed_vma) relocation < 0) | |
934 | return bfd_reloc_overflow; | |
935 | break; | |
936 | ||
937 | case R_CRIS_32_PLT_PCREL: | |
938 | case R_CRIS_32_PCREL: | |
939 | relocation -= 2; | |
940 | /* Fall through. */ | |
941 | case R_CRIS_8_PCREL: | |
942 | case R_CRIS_16_PCREL: | |
943 | relocation -= 2; | |
944 | break; | |
945 | ||
946 | default: | |
947 | break; | |
948 | } | |
949 | ||
950 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
06c15ad7 HPN |
951 | contents, rel->r_offset, |
952 | relocation, rel->r_addend); | |
953 | return r; | |
954 | } | |
955 | \f | |
100382c7 HPN |
956 | |
957 | /* The number of errors left before we stop outputting reloc-specific | |
958 | explanatory messages. By coincidence, this works nicely together | |
959 | with the default number of messages you'll get from LD about | |
960 | "relocation truncated to fit" messages before you get an | |
961 | "additional relocation overflows omitted from the output". */ | |
962 | static int additional_relocation_error_msg_count = 10; | |
963 | ||
06c15ad7 HPN |
964 | /* Relocate an CRIS ELF section. See elf32-fr30.c, from where this was |
965 | copied, for further comments. */ | |
966 | ||
b34976b6 | 967 | static bfd_boolean |
4dfe6ac6 NC |
968 | cris_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED, |
969 | struct bfd_link_info *info, | |
970 | bfd *input_bfd, | |
971 | asection *input_section, | |
972 | bfd_byte *contents, | |
973 | Elf_Internal_Rela *relocs, | |
974 | Elf_Internal_Sym *local_syms, | |
975 | asection **local_sections) | |
06c15ad7 | 976 | { |
4dfe6ac6 | 977 | struct elf_cris_link_hash_table * htab; |
915e5146 | 978 | bfd *dynobj; |
b34976b6 AM |
979 | Elf_Internal_Shdr *symtab_hdr; |
980 | struct elf_link_hash_entry **sym_hashes; | |
915e5146 HPN |
981 | bfd_vma *local_got_offsets; |
982 | asection *sgot; | |
983 | asection *splt; | |
984 | asection *sreloc; | |
b34976b6 AM |
985 | Elf_Internal_Rela *rel; |
986 | Elf_Internal_Rela *relend; | |
100382c7 | 987 | asection *srelgot; |
06c15ad7 | 988 | |
4dfe6ac6 NC |
989 | htab = elf_cris_hash_table (info); |
990 | if (htab == NULL) | |
991 | return FALSE; | |
992 | ||
ce558b89 | 993 | dynobj = htab->root.dynobj; |
915e5146 | 994 | local_got_offsets = elf_local_got_offsets (input_bfd); |
06c15ad7 HPN |
995 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; |
996 | sym_hashes = elf_sym_hashes (input_bfd); | |
997 | relend = relocs + input_section->reloc_count; | |
998 | ||
915e5146 HPN |
999 | sgot = NULL; |
1000 | splt = NULL; | |
1001 | sreloc = NULL; | |
100382c7 | 1002 | srelgot = NULL; |
915e5146 HPN |
1003 | |
1004 | if (dynobj != NULL) | |
1005 | { | |
ce558b89 AM |
1006 | splt = htab->root.splt; |
1007 | sgot = htab->root.sgot; | |
915e5146 HPN |
1008 | } |
1009 | ||
06c15ad7 HPN |
1010 | for (rel = relocs; rel < relend; rel ++) |
1011 | { | |
b34976b6 AM |
1012 | reloc_howto_type *howto; |
1013 | unsigned long r_symndx; | |
1014 | Elf_Internal_Sym *sym; | |
1015 | asection *sec; | |
1016 | struct elf_link_hash_entry *h; | |
1017 | bfd_vma relocation; | |
1018 | bfd_reloc_status_type r; | |
1019 | const char *symname = NULL; | |
100382c7 | 1020 | enum elf_cris_reloc_type r_type; |
e01c16a8 | 1021 | bfd_boolean resolved_to_zero; |
a7c10850 | 1022 | |
06c15ad7 | 1023 | r_type = ELF32_R_TYPE (rel->r_info); |
a7c10850 | 1024 | |
06c15ad7 HPN |
1025 | if ( r_type == R_CRIS_GNU_VTINHERIT |
1026 | || r_type == R_CRIS_GNU_VTENTRY) | |
1027 | continue; | |
a7c10850 | 1028 | |
f0fe0e16 | 1029 | r_symndx = ELF32_R_SYM (rel->r_info); |
915e5146 | 1030 | howto = cris_elf_howto_table + r_type; |
06c15ad7 HPN |
1031 | h = NULL; |
1032 | sym = NULL; | |
1033 | sec = NULL; | |
a7c10850 | 1034 | |
06c15ad7 HPN |
1035 | if (r_symndx < symtab_hdr->sh_info) |
1036 | { | |
1037 | sym = local_syms + r_symndx; | |
1038 | sec = local_sections [r_symndx]; | |
8517fae7 | 1039 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
a7c10850 | 1040 | |
dc810e39 AM |
1041 | symname = (bfd_elf_string_from_elf_section |
1042 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
1043 | if (symname == NULL) | |
1044 | symname = bfd_section_name (input_bfd, sec); | |
06c15ad7 HPN |
1045 | } |
1046 | else | |
1047 | { | |
62d887d4 | 1048 | bfd_boolean warned, ignored; |
560e09e9 | 1049 | bfd_boolean unresolved_reloc; |
0a4787a0 | 1050 | |
b2a8e766 AM |
1051 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
1052 | r_symndx, symtab_hdr, sym_hashes, | |
1053 | h, sec, relocation, | |
62d887d4 | 1054 | unresolved_reloc, warned, ignored); |
915e5146 | 1055 | |
100382c7 HPN |
1056 | symname = h->root.root.string; |
1057 | ||
560e09e9 | 1058 | if (unresolved_reloc |
915e5146 HPN |
1059 | /* Perhaps we should detect the cases that |
1060 | sec->output_section is expected to be NULL like i386 and | |
1061 | m68k, but apparently (and according to elfxx-ia64.c) all | |
1062 | valid cases are where the symbol is defined in a shared | |
1063 | object which we link dynamically against. This includes | |
1064 | PLT relocs for which we've created a PLT entry and other | |
1065 | relocs for which we're prepared to create dynamic | |
1066 | relocations. | |
1067 | ||
1068 | For now, new situations cause us to just err when | |
1069 | sec->output_offset is NULL but the object with the symbol | |
1070 | is *not* dynamically linked against. Thus this will | |
1071 | automatically remind us so we can see if there are other | |
1072 | valid cases we need to revisit. */ | |
560e09e9 NC |
1073 | && (sec->owner->flags & DYNAMIC) != 0) |
1074 | relocation = 0; | |
1075 | ||
1076 | else if (h->root.type == bfd_link_hash_defined | |
1077 | || h->root.type == bfd_link_hash_defweak) | |
1078 | { | |
1079 | /* Here follow the cases where the relocation value must | |
1080 | be zero (or when further handling is simplified when | |
1081 | zero). I can't claim to understand the various | |
1082 | conditions and they weren't described in the files | |
1083 | where I copied them from (elf32-m68k.c and | |
1084 | elf32-i386.c), but let's mention examples of where | |
1085 | they happen. FIXME: Perhaps define and use a | |
1086 | dynamic_symbol_p function like ia64. | |
1087 | ||
1088 | - When creating a shared library, we can have an | |
1089 | ordinary relocation for a symbol defined in a shared | |
1090 | library (perhaps the one we create). We then make | |
1091 | the relocation value zero, as the value seen now will | |
1092 | be added into the relocation addend in this shared | |
1093 | library, but must be handled only at dynamic-link | |
1094 | time. FIXME: Not sure this example covers the | |
1095 | h->elf_link_hash_flags test, though it's there in | |
1096 | other targets. */ | |
0e1862bb | 1097 | if (bfd_link_pic (info) |
cb1c8103 | 1098 | && ((!SYMBOLIC_BIND (info, h) && h->dynindx != -1) |
f5385ebf | 1099 | || !h->def_regular) |
560e09e9 NC |
1100 | && (input_section->flags & SEC_ALLOC) != 0 |
1101 | && (r_type == R_CRIS_8 | |
1102 | || r_type == R_CRIS_16 | |
1103 | || r_type == R_CRIS_32 | |
1104 | || r_type == R_CRIS_8_PCREL | |
1105 | || r_type == R_CRIS_16_PCREL | |
1106 | || r_type == R_CRIS_32_PCREL)) | |
915e5146 | 1107 | relocation = 0; |
0e1862bb | 1108 | else if (!bfd_link_relocatable (info) && unresolved_reloc |
1d5316ab AM |
1109 | && (_bfd_elf_section_offset (output_bfd, info, |
1110 | input_section, | |
1111 | rel->r_offset) | |
1112 | != (bfd_vma) -1)) | |
915e5146 | 1113 | { |
560e09e9 | 1114 | _bfd_error_handler |
695344c0 | 1115 | /* xgettext:c-format */ |
bac23f82 | 1116 | (_("%B, section %A: unresolvable relocation %s against symbol `%s'"), |
d003868e AM |
1117 | input_bfd, |
1118 | input_section, | |
8f615d07 | 1119 | cris_elf_howto_table[r_type].name, |
d003868e | 1120 | symname); |
915e5146 | 1121 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 1122 | return FALSE; |
915e5146 | 1123 | } |
06c15ad7 | 1124 | } |
06c15ad7 | 1125 | } |
a7c10850 | 1126 | |
dbaa2011 | 1127 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 1128 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 1129 | rel, 1, relend, howto, 0, contents); |
ab96bf03 | 1130 | |
0e1862bb | 1131 | if (bfd_link_relocatable (info)) |
ab96bf03 AM |
1132 | continue; |
1133 | ||
e01c16a8 L |
1134 | resolved_to_zero = (h != NULL |
1135 | && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
1136 | ||
915e5146 | 1137 | switch (r_type) |
06c15ad7 | 1138 | { |
915e5146 HPN |
1139 | case R_CRIS_16_GOTPLT: |
1140 | case R_CRIS_32_GOTPLT: | |
1141 | /* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT, | |
1142 | but we require a PLT, and the PLT handling will take care of | |
1143 | filling in the PLT-specific GOT entry. For the GOT offset, | |
1144 | calculate it as we do when filling it in for the .got.plt | |
1145 | section. If we don't have a PLT, punt to GOT handling. */ | |
1146 | if (h != NULL | |
1147 | && ((struct elf_cris_link_hash_entry *) h)->gotplt_offset != 0) | |
06c15ad7 | 1148 | { |
ce558b89 | 1149 | asection *sgotplt = htab->root.sgotplt; |
915e5146 | 1150 | bfd_vma got_offset; |
a7c10850 | 1151 | |
915e5146 HPN |
1152 | BFD_ASSERT (h->dynindx != -1); |
1153 | BFD_ASSERT (sgotplt != NULL); | |
a7c10850 | 1154 | |
915e5146 HPN |
1155 | got_offset |
1156 | = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset; | |
06c15ad7 | 1157 | |
915e5146 | 1158 | relocation = got_offset; |
06c15ad7 | 1159 | break; |
915e5146 | 1160 | } |
06c15ad7 | 1161 | |
4d96d128 | 1162 | /* We didn't make a PLT entry for this symbol. Maybe everything is |
915e5146 HPN |
1163 | folded into the GOT. Other than folding, this happens when |
1164 | statically linking PIC code, or when using -Bsymbolic. Check | |
1165 | that we instead have a GOT entry as done for us by | |
1166 | elf_cris_adjust_dynamic_symbol, and drop through into the | |
e4a2175c HPN |
1167 | ordinary GOT cases. This must not happen for the |
1168 | executable, because any reference it does to a function | |
1169 | that is satisfied by a DSO must generate a PLT. We assume | |
1170 | these call-specific relocs don't address non-functions. */ | |
1171 | if (h != NULL | |
1172 | && (h->got.offset == (bfd_vma) -1 | |
0e1862bb | 1173 | || (!bfd_link_pic (info) |
f5385ebf AM |
1174 | && !(h->def_regular |
1175 | || (!h->def_dynamic | |
1176 | && h->root.type == bfd_link_hash_undefweak))))) | |
915e5146 | 1177 | { |
4eca0228 | 1178 | _bfd_error_handler |
e4a2175c | 1179 | ((h->got.offset == (bfd_vma) -1) |
695344c0 | 1180 | /* xgettext:c-format */ |
bac23f82 | 1181 | ? _("%B, section %A: No PLT nor GOT for relocation %s" |
d003868e | 1182 | " against symbol `%s'") |
695344c0 | 1183 | /* xgettext:c-format */ |
bac23f82 | 1184 | : _("%B, section %A: No PLT for relocation %s" |
d003868e AM |
1185 | " against symbol `%s'"), |
1186 | input_bfd, | |
1187 | input_section, | |
915e5146 | 1188 | cris_elf_howto_table[r_type].name, |
ada1953e HPN |
1189 | (symname != NULL && symname[0] != '\0' |
1190 | ? symname : _("[whose name is lost]"))); | |
915e5146 HPN |
1191 | |
1192 | /* FIXME: Perhaps blaming input is not the right thing to | |
1193 | do; this is probably an internal error. But it is true | |
1194 | that we didn't like that particular input. */ | |
1195 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1196 | return FALSE; |
915e5146 HPN |
1197 | } |
1198 | /* Fall through. */ | |
1199 | ||
1200 | /* The size of the actual relocation is not used here; we only | |
1201 | fill in the GOT table here. */ | |
1202 | case R_CRIS_16_GOT: | |
1203 | case R_CRIS_32_GOT: | |
1204 | { | |
1205 | bfd_vma off; | |
1206 | ||
1207 | /* Note that despite using RELA relocations, the .got contents | |
1208 | is always filled in with the link-relative relocation | |
1209 | value; the addend. */ | |
1210 | ||
1211 | if (h != NULL) | |
1212 | { | |
1213 | off = h->got.offset; | |
1214 | BFD_ASSERT (off != (bfd_vma) -1); | |
1215 | ||
1216 | if (!elf_hash_table (info)->dynamic_sections_created | |
0e1862bb | 1217 | || (! bfd_link_pic (info) |
f5385ebf | 1218 | && (h->def_regular |
e4a2175c | 1219 | || h->type == STT_FUNC |
f5385ebf | 1220 | || h->needs_plt)) |
0e1862bb | 1221 | || (bfd_link_pic (info) |
cb1c8103 | 1222 | && (SYMBOLIC_BIND (info, h) || h->dynindx == -1) |
f5385ebf | 1223 | && h->def_regular)) |
915e5146 | 1224 | { |
0e1862bb | 1225 | /* This wasn't checked above for ! bfd_link_pic (info), but |
e4a2175c HPN |
1226 | must hold there if we get here; the symbol must |
1227 | be defined in the regular program or be undefweak | |
1228 | or be a function or otherwise need a PLT. */ | |
6849c52f | 1229 | BFD_ASSERT (!elf_hash_table (info)->dynamic_sections_created |
0e1862bb | 1230 | || bfd_link_pic (info) |
f5385ebf | 1231 | || h->def_regular |
e4a2175c | 1232 | || h->type == STT_FUNC |
f5385ebf | 1233 | || h->needs_plt |
6849c52f | 1234 | || h->root.type == bfd_link_hash_undefweak); |
4d96d128 | 1235 | |
915e5146 | 1236 | /* This is actually a static link, or it is a |
6849c52f HPN |
1237 | -Bsymbolic link and the symbol is defined locally, |
1238 | or is undefweak, or the symbol was forced to be | |
1239 | local because of a version file, or we're not | |
1240 | creating a dynamic object. We must initialize this | |
1241 | entry in the global offset table. Since the offset | |
1242 | must always be a multiple of 4, we use the least | |
1243 | significant bit to record whether we have | |
1244 | initialized it already. | |
1245 | ||
1246 | If this GOT entry should be runtime-initialized, we | |
1247 | will create a .rela.got relocation entry to | |
1248 | initialize the value. This is done in the | |
1249 | finish_dynamic_symbol routine. */ | |
915e5146 HPN |
1250 | if ((off & 1) != 0) |
1251 | off &= ~1; | |
1252 | else | |
1253 | { | |
1254 | bfd_put_32 (output_bfd, relocation, | |
1255 | sgot->contents + off); | |
1256 | h->got.offset |= 1; | |
1257 | } | |
1258 | } | |
1259 | } | |
1260 | else | |
1261 | { | |
1262 | BFD_ASSERT (local_got_offsets != NULL | |
1263 | && local_got_offsets[r_symndx] != (bfd_vma) -1); | |
1264 | ||
1265 | off = local_got_offsets[r_symndx]; | |
1266 | ||
1267 | /* The offset must always be a multiple of 4. We use | |
1268 | the least significant bit to record whether we have | |
1269 | already generated the necessary reloc. */ | |
1270 | if ((off & 1) != 0) | |
1271 | off &= ~1; | |
1272 | else | |
1273 | { | |
1274 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
1275 | ||
0e1862bb | 1276 | if (bfd_link_pic (info)) |
915e5146 | 1277 | { |
915e5146 | 1278 | Elf_Internal_Rela outrel; |
947216bf | 1279 | bfd_byte *loc; |
915e5146 | 1280 | |
ce558b89 | 1281 | srelgot = htab->root.srelgot; |
100382c7 | 1282 | BFD_ASSERT (srelgot != NULL); |
915e5146 HPN |
1283 | |
1284 | outrel.r_offset = (sgot->output_section->vma | |
1285 | + sgot->output_offset | |
1286 | + off); | |
1287 | outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE); | |
1288 | outrel.r_addend = relocation; | |
100382c7 HPN |
1289 | loc = srelgot->contents; |
1290 | loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela); | |
947216bf | 1291 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
915e5146 HPN |
1292 | } |
1293 | ||
1294 | local_got_offsets[r_symndx] |= 1; | |
1295 | } | |
1296 | } | |
1297 | ||
1298 | relocation = sgot->output_offset + off; | |
1299 | if (rel->r_addend != 0) | |
1300 | { | |
1301 | /* We can't do anything for a relocation which is against | |
1302 | a symbol *plus offset*. GOT holds relocations for | |
1303 | symbols. Make this an error; the compiler isn't | |
1304 | allowed to pass us these kinds of things. */ | |
1305 | if (h == NULL) | |
4eca0228 | 1306 | _bfd_error_handler |
695344c0 | 1307 | /* xgettext:c-format */ |
d42c267e | 1308 | (_("%B, section %A: relocation %s with non-zero addend %Ld" |
d003868e AM |
1309 | " against local symbol"), |
1310 | input_bfd, | |
1311 | input_section, | |
915e5146 | 1312 | cris_elf_howto_table[r_type].name, |
d003868e | 1313 | rel->r_addend); |
915e5146 | 1314 | else |
4eca0228 | 1315 | _bfd_error_handler |
695344c0 | 1316 | /* xgettext:c-format */ |
d42c267e | 1317 | (_("%B, section %A: relocation %s with non-zero addend %Ld" |
d003868e AM |
1318 | " against symbol `%s'"), |
1319 | input_bfd, | |
1320 | input_section, | |
915e5146 HPN |
1321 | cris_elf_howto_table[r_type].name, |
1322 | rel->r_addend, | |
d003868e | 1323 | symname[0] != '\0' ? symname : _("[whose name is lost]")); |
915e5146 HPN |
1324 | |
1325 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1326 | return FALSE; |
915e5146 HPN |
1327 | } |
1328 | } | |
1329 | break; | |
06c15ad7 | 1330 | |
915e5146 | 1331 | case R_CRIS_32_GOTREL: |
3dab95d3 HPN |
1332 | /* This relocation must only be performed against local symbols. |
1333 | It's also ok when we link a program and the symbol is either | |
1334 | defined in an ordinary (non-DSO) object or is undefined weak. */ | |
1335 | if (h != NULL | |
1336 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
0e1862bb | 1337 | && !(!bfd_link_pic (info) |
f5385ebf AM |
1338 | && (h->def_regular |
1339 | || (!h->def_dynamic | |
3dab95d3 | 1340 | && h->root.type == bfd_link_hash_undefweak)))) |
915e5146 | 1341 | { |
4eca0228 | 1342 | _bfd_error_handler |
695344c0 | 1343 | /* xgettext:c-format */ |
bac23f82 HPN |
1344 | (_("%B, section %A: relocation %s is" |
1345 | " not allowed for global symbol: `%s'"), | |
d003868e AM |
1346 | input_bfd, |
1347 | input_section, | |
915e5146 | 1348 | cris_elf_howto_table[r_type].name, |
d003868e | 1349 | symname); |
915e5146 | 1350 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 1351 | return FALSE; |
06c15ad7 HPN |
1352 | } |
1353 | ||
58255df3 HPN |
1354 | /* This can happen if we get a link error with the input ELF |
1355 | variant mismatching the output variant. Emit an error so | |
1356 | it's noticed if it happens elsewhere. */ | |
1357 | if (sgot == NULL) | |
1358 | { | |
4eca0228 | 1359 | _bfd_error_handler |
695344c0 | 1360 | /* xgettext:c-format */ |
bac23f82 | 1361 | (_("%B, section %A: relocation %s with no GOT created"), |
d003868e AM |
1362 | input_bfd, |
1363 | input_section, | |
1364 | cris_elf_howto_table[r_type].name); | |
58255df3 | 1365 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 1366 | return FALSE; |
58255df3 HPN |
1367 | } |
1368 | ||
915e5146 HPN |
1369 | /* This relocation is like a PC-relative one, except the |
1370 | reference point is the location of GOT. Note that | |
1371 | sgot->output_offset is not involved in this calculation. We | |
1372 | always want the start of entire .got section, not the | |
1373 | position after the reserved header. */ | |
1374 | relocation -= sgot->output_section->vma; | |
1375 | break; | |
06c15ad7 | 1376 | |
915e5146 HPN |
1377 | case R_CRIS_32_PLT_PCREL: |
1378 | /* Relocation is to the entry for this symbol in the | |
1379 | procedure linkage table. */ | |
06c15ad7 | 1380 | |
915e5146 HPN |
1381 | /* Resolve a PLT_PCREL reloc against a local symbol directly, |
1382 | without using the procedure linkage table. */ | |
0a4787a0 | 1383 | if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
915e5146 HPN |
1384 | break; |
1385 | ||
1386 | if (h->plt.offset == (bfd_vma) -1 | |
1387 | || splt == NULL) | |
1388 | { | |
1389 | /* We didn't make a PLT entry for this symbol. This | |
1390 | happens when statically linking PIC code, or when | |
1391 | using -Bsymbolic. */ | |
1392 | break; | |
1393 | } | |
1394 | ||
1395 | relocation = (splt->output_section->vma | |
1396 | + splt->output_offset | |
1397 | + h->plt.offset); | |
1398 | break; | |
1399 | ||
1400 | case R_CRIS_32_PLT_GOTREL: | |
1401 | /* Like R_CRIS_32_PLT_PCREL, but the reference point is the | |
1402 | start of the .got section. See also comment at | |
1403 | R_CRIS_32_GOT. */ | |
1404 | relocation -= sgot->output_section->vma; | |
1405 | ||
1406 | /* Resolve a PLT_GOTREL reloc against a local symbol directly, | |
1407 | without using the procedure linkage table. */ | |
0a4787a0 | 1408 | if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
915e5146 HPN |
1409 | break; |
1410 | ||
1411 | if (h->plt.offset == (bfd_vma) -1 | |
1412 | || splt == NULL) | |
1413 | { | |
1414 | /* We didn't make a PLT entry for this symbol. This | |
1415 | happens when statically linking PIC code, or when | |
1416 | using -Bsymbolic. */ | |
1417 | break; | |
1418 | } | |
1419 | ||
1420 | relocation = (splt->output_section->vma | |
1421 | + splt->output_offset | |
1422 | + h->plt.offset | |
1423 | - sgot->output_section->vma); | |
1424 | break; | |
1425 | ||
1426 | case R_CRIS_8_PCREL: | |
1427 | case R_CRIS_16_PCREL: | |
1428 | case R_CRIS_32_PCREL: | |
1429 | /* If the symbol was local, we need no shlib-specific handling. */ | |
0d08de41 HPN |
1430 | if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
1431 | || h->dynindx == -1) | |
915e5146 HPN |
1432 | break; |
1433 | ||
1434 | /* Fall through. */ | |
1435 | case R_CRIS_8: | |
1436 | case R_CRIS_16: | |
1437 | case R_CRIS_32: | |
0e1862bb | 1438 | if (bfd_link_pic (info) |
e01c16a8 | 1439 | && !resolved_to_zero |
cf35638d | 1440 | && r_symndx != STN_UNDEF |
915e5146 HPN |
1441 | && (input_section->flags & SEC_ALLOC) != 0 |
1442 | && ((r_type != R_CRIS_8_PCREL | |
1443 | && r_type != R_CRIS_16_PCREL | |
1444 | && r_type != R_CRIS_32_PCREL) | |
cb1c8103 | 1445 | || (!SYMBOLIC_BIND (info, h) |
02865b8e | 1446 | || (h != NULL && !h->def_regular)))) |
915e5146 HPN |
1447 | { |
1448 | Elf_Internal_Rela outrel; | |
947216bf | 1449 | bfd_byte *loc; |
b34976b6 | 1450 | bfd_boolean skip, relocate; |
915e5146 HPN |
1451 | |
1452 | /* When generating a shared object, these relocations | |
1453 | are copied into the output file to be resolved at run | |
1454 | time. */ | |
1455 | ||
1456 | if (sreloc == NULL) | |
1457 | { | |
83bac4b0 | 1458 | sreloc = _bfd_elf_get_dynamic_reloc_section |
e236b51d | 1459 | (dynobj, input_section, /*rela?*/ TRUE); |
83bac4b0 NC |
1460 | /* The section should have been created in cris_elf_check_relocs, |
1461 | but that function will not be called for objects which fail in | |
915e5146 HPN |
1462 | cris_elf_merge_private_bfd_data. */ |
1463 | if (sreloc == NULL) | |
1464 | { | |
915e5146 | 1465 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 1466 | return FALSE; |
915e5146 HPN |
1467 | } |
1468 | } | |
1469 | ||
b34976b6 AM |
1470 | skip = FALSE; |
1471 | relocate = FALSE; | |
915e5146 | 1472 | |
c629eae0 JJ |
1473 | outrel.r_offset = |
1474 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
1475 | rel->r_offset); | |
1476 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 1477 | skip = TRUE; |
b3bf42d8 HPN |
1478 | else if (outrel.r_offset == (bfd_vma) -2 |
1479 | /* For now, undefined weak symbols with non-default | |
1480 | visibility (yielding 0), like exception info for | |
1481 | discarded sections, will get a R_CRIS_NONE | |
1482 | relocation rather than no relocation, because we | |
1483 | notice too late that the symbol doesn't need a | |
1484 | relocation. */ | |
1485 | || (h != NULL | |
1486 | && h->root.type == bfd_link_hash_undefweak | |
1487 | && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)) | |
b34976b6 | 1488 | skip = TRUE, relocate = TRUE; |
915e5146 HPN |
1489 | outrel.r_offset += (input_section->output_section->vma |
1490 | + input_section->output_offset); | |
1491 | ||
1492 | if (skip) | |
0bb2d96a | 1493 | memset (&outrel, 0, sizeof outrel); |
915e5146 HPN |
1494 | /* h->dynindx may be -1 if the symbol was marked to |
1495 | become local. */ | |
1496 | else if (h != NULL | |
cb1c8103 | 1497 | && ((!SYMBOLIC_BIND (info, h) && h->dynindx != -1) |
f5385ebf | 1498 | || !h->def_regular)) |
915e5146 HPN |
1499 | { |
1500 | BFD_ASSERT (h->dynindx != -1); | |
915e5146 HPN |
1501 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
1502 | outrel.r_addend = relocation + rel->r_addend; | |
1503 | } | |
1504 | else | |
1505 | { | |
74541ad4 AM |
1506 | outrel.r_addend = relocation + rel->r_addend; |
1507 | ||
915e5146 HPN |
1508 | if (r_type == R_CRIS_32) |
1509 | { | |
b34976b6 | 1510 | relocate = TRUE; |
915e5146 | 1511 | outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE); |
915e5146 HPN |
1512 | } |
1513 | else | |
1514 | { | |
1515 | long indx; | |
1516 | ||
8517fae7 | 1517 | if (bfd_is_abs_section (sec)) |
915e5146 HPN |
1518 | indx = 0; |
1519 | else if (sec == NULL || sec->owner == NULL) | |
1520 | { | |
1521 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1522 | return FALSE; |
915e5146 HPN |
1523 | } |
1524 | else | |
1525 | { | |
1526 | asection *osec; | |
1527 | ||
74541ad4 AM |
1528 | /* We are turning this relocation into one |
1529 | against a section symbol. It would be | |
1530 | proper to subtract the symbol's value, | |
1531 | osec->vma, from the emitted reloc addend, | |
1532 | but ld.so expects buggy relocs. */ | |
915e5146 HPN |
1533 | osec = sec->output_section; |
1534 | indx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
1535 | if (indx == 0) |
1536 | { | |
74541ad4 AM |
1537 | osec = htab->root.text_index_section; |
1538 | indx = elf_section_data (osec)->dynindx; | |
1539 | } | |
1540 | BFD_ASSERT (indx != 0); | |
915e5146 HPN |
1541 | } |
1542 | ||
915e5146 | 1543 | outrel.r_info = ELF32_R_INFO (indx, r_type); |
915e5146 HPN |
1544 | } |
1545 | } | |
1546 | ||
947216bf AM |
1547 | loc = sreloc->contents; |
1548 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
1549 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
915e5146 HPN |
1550 | |
1551 | /* This reloc will be computed at runtime, so there's no | |
1552 | need to do anything now, except for R_CRIS_32 relocations | |
1553 | that have been turned into R_CRIS_RELATIVE. */ | |
1554 | if (!relocate) | |
1555 | continue; | |
1556 | } | |
1557 | ||
1558 | break; | |
100382c7 HPN |
1559 | |
1560 | case R_CRIS_16_DTPREL: | |
1561 | case R_CRIS_32_DTPREL: | |
1562 | /* This relocation must only be performed against local | |
6718f446 HPN |
1563 | symbols, or to sections that are not loadable. It's also |
1564 | ok when we link a program and the symbol is defined in an | |
1565 | ordinary (non-DSO) object (if it's undefined there, we've | |
1566 | already seen an error). */ | |
100382c7 | 1567 | if (h != NULL |
6718f446 | 1568 | && (input_section->flags & SEC_ALLOC) != 0 |
100382c7 | 1569 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
0e1862bb | 1570 | && (bfd_link_pic (info) |
100382c7 HPN |
1571 | || (!h->def_regular |
1572 | && h->root.type != bfd_link_hash_undefined))) | |
1573 | { | |
4eca0228 | 1574 | _bfd_error_handler |
100382c7 HPN |
1575 | ((h->root.type == bfd_link_hash_undefined) |
1576 | /* We shouldn't get here for GCC-emitted code. */ | |
695344c0 | 1577 | /* xgettext:c-format */ |
100382c7 HPN |
1578 | ? _("%B, section %A: relocation %s has an undefined" |
1579 | " reference to `%s', perhaps a declaration mixup?") | |
695344c0 NC |
1580 | /* xgettext:c-format */ |
1581 | : _("%B, section %A: relocation %s is" | |
100382c7 HPN |
1582 | " not allowed for `%s', a global symbol with default" |
1583 | " visibility, perhaps a declaration mixup?"), | |
1584 | input_bfd, | |
1585 | input_section, | |
1586 | cris_elf_howto_table[r_type].name, | |
1587 | symname != NULL && symname[0] != '\0' | |
1588 | ? symname : _("[whose name is lost]")); | |
1589 | bfd_set_error (bfd_error_bad_value); | |
1590 | return FALSE; | |
1591 | } | |
1592 | ||
6718f446 | 1593 | BFD_ASSERT ((input_section->flags & SEC_ALLOC) == 0 |
4dfe6ac6 | 1594 | || htab->dtpmod_refcount != 0); |
100382c7 HPN |
1595 | |
1596 | /* Fill in a R_CRIS_DTPMOD reloc at offset 3 if we haven't | |
1597 | already done so. Note that we do this in .got.plt, not | |
1598 | in .got, as .got.plt contains the first part, still the | |
1599 | reloc is against .got, because the linker script directs | |
1600 | (is required to direct) them both into .got. */ | |
4dfe6ac6 | 1601 | if (htab->dtpmod_refcount > 0 |
6718f446 | 1602 | && (input_section->flags & SEC_ALLOC) != 0) |
100382c7 | 1603 | { |
ce558b89 | 1604 | asection *sgotplt = htab->root.sgotplt; |
100382c7 HPN |
1605 | BFD_ASSERT (sgotplt != NULL); |
1606 | ||
0e1862bb | 1607 | if (bfd_link_pic (info)) |
100382c7 HPN |
1608 | { |
1609 | Elf_Internal_Rela outrel; | |
1610 | bfd_byte *loc; | |
1611 | ||
ce558b89 | 1612 | srelgot = htab->root.srelgot; |
100382c7 HPN |
1613 | BFD_ASSERT (srelgot != NULL); |
1614 | loc = srelgot->contents; | |
1615 | loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela); | |
1616 | ||
1617 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 12); | |
1618 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16); | |
1619 | outrel.r_offset = (sgotplt->output_section->vma | |
1620 | + sgotplt->output_offset | |
1621 | + 12); | |
1622 | outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTPMOD); | |
1623 | outrel.r_addend = 0; | |
1624 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
1625 | } | |
1626 | else | |
1627 | { | |
1628 | /* For an executable, the GOT entry contents is known. */ | |
1629 | bfd_put_32 (output_bfd, (bfd_vma) 1, sgotplt->contents + 12); | |
1630 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16); | |
1631 | } | |
1632 | ||
1633 | /* Reverse the sign to mark that we've emitted the | |
1634 | required GOT entry. */ | |
4dfe6ac6 | 1635 | htab->dtpmod_refcount = - htab->dtpmod_refcount; |
100382c7 HPN |
1636 | } |
1637 | ||
ebf275e3 HPN |
1638 | /* The relocation is the offset from the start of the module |
1639 | TLS block to the (local) symbol. */ | |
100382c7 | 1640 | relocation -= elf_hash_table (info)->tls_sec == NULL |
ebf275e3 | 1641 | ? 0 : elf_hash_table (info)->tls_sec->vma; |
100382c7 HPN |
1642 | break; |
1643 | ||
1644 | case R_CRIS_32_GD: | |
0e1862bb | 1645 | if (bfd_link_pic (info)) |
100382c7 HPN |
1646 | { |
1647 | bfd_set_error (bfd_error_invalid_operation); | |
1648 | ||
1649 | /* We've already informed in cris_elf_check_relocs that | |
1650 | this is an error. */ | |
1651 | return FALSE; | |
1652 | } | |
1653 | /* Fall through. */ | |
1654 | ||
1655 | case R_CRIS_16_GOT_GD: | |
1656 | case R_CRIS_32_GOT_GD: | |
1657 | if (rel->r_addend != 0) | |
1658 | { | |
1659 | /* We can't do anything for a relocation which is against a | |
1660 | symbol *plus offset*. The GOT holds relocations for | |
1661 | symbols. Make this an error; the compiler isn't allowed | |
1662 | to pass us these kinds of things. */ | |
4eca0228 | 1663 | _bfd_error_handler |
695344c0 | 1664 | /* xgettext:c-format */ |
d42c267e | 1665 | (_("%B, section %A: relocation %s with non-zero addend %Ld" |
100382c7 HPN |
1666 | " against symbol `%s'"), |
1667 | input_bfd, | |
1668 | input_section, | |
1669 | cris_elf_howto_table[r_type].name, | |
1670 | rel->r_addend, | |
1671 | symname[0] != '\0' ? symname : _("[whose name is lost]")); | |
1672 | ||
1673 | bfd_set_error (bfd_error_bad_value); | |
1674 | return FALSE; | |
1675 | } | |
1676 | ||
0e1862bb | 1677 | if (!bfd_link_pic (info) |
34d3d6b9 | 1678 | && (h == NULL || h->def_regular || ELF_COMMON_DEF_P (h))) |
100382c7 HPN |
1679 | { |
1680 | /* Known contents of the GOT. */ | |
1681 | bfd_vma off; | |
1682 | ||
1683 | /* The symbol is defined in the program, so just write | |
019c5a2e | 1684 | (1, known_tpoffset) into the GOT. */ |
100382c7 HPN |
1685 | relocation -= elf_hash_table (info)->tls_sec->vma; |
1686 | ||
1687 | if (h != NULL) | |
1688 | { | |
1689 | off = elf_cris_hash_entry (h)->tprel_refcount > 0 | |
1690 | ? h->got.offset + 4 : h->got.offset; | |
1691 | } | |
1692 | else | |
1693 | { | |
1694 | off = local_got_offsets[r_symndx]; | |
1695 | if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)]) | |
1696 | off += 4; | |
1697 | } | |
1698 | ||
1699 | /* We use bit 1 of the offset as a flag for GOT entry with | |
1700 | the R_CRIS_DTP reloc, setting it when we've emitted the | |
1701 | GOT entry and reloc. Bit 0 is used for R_CRIS_32_TPREL | |
1702 | relocs. */ | |
1703 | if ((off & 2) == 0) | |
1704 | { | |
1705 | off &= ~3; | |
1706 | ||
1707 | if (h != NULL) | |
1708 | h->got.offset |= 2; | |
1709 | else | |
1710 | local_got_offsets[r_symndx] |= 2; | |
1711 | ||
1712 | bfd_put_32 (output_bfd, 1, sgot->contents + off); | |
1713 | bfd_put_32 (output_bfd, relocation, sgot->contents + off + 4); | |
1714 | } | |
1715 | else | |
1716 | off &= ~3; | |
1717 | ||
1718 | relocation = sgot->output_offset + off | |
1719 | + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0); | |
1720 | } | |
1721 | else | |
1722 | { | |
1723 | /* Not all parts of the GOT entry are known; emit a real | |
1724 | relocation. */ | |
1725 | bfd_vma off; | |
1726 | ||
1727 | if (h != NULL) | |
1728 | off = elf_cris_hash_entry (h)->tprel_refcount > 0 | |
1729 | ? h->got.offset + 4 : h->got.offset; | |
1730 | else | |
1731 | { | |
1732 | off = local_got_offsets[r_symndx]; | |
1733 | if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)]) | |
1734 | off += 4; | |
1735 | } | |
1736 | ||
1737 | /* See above re bit 1 and bit 0 usage. */ | |
1738 | if ((off & 2) == 0) | |
1739 | { | |
1740 | Elf_Internal_Rela outrel; | |
1741 | bfd_byte *loc; | |
1742 | ||
1743 | off &= ~3; | |
1744 | ||
1745 | if (h != NULL) | |
1746 | h->got.offset |= 2; | |
1747 | else | |
1748 | local_got_offsets[r_symndx] |= 2; | |
1749 | ||
1750 | /* Clear the target contents of the GOT (just as a | |
1751 | gesture; it's already cleared on allocation): this | |
1752 | relocation is not like the other dynrelocs. */ | |
1753 | bfd_put_32 (output_bfd, 0, sgot->contents + off); | |
1754 | bfd_put_32 (output_bfd, 0, sgot->contents + off + 4); | |
1755 | ||
ce558b89 | 1756 | srelgot = htab->root.srelgot; |
100382c7 HPN |
1757 | BFD_ASSERT (srelgot != NULL); |
1758 | ||
1759 | if (h != NULL && h->dynindx != -1) | |
1760 | { | |
1761 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_DTP); | |
1762 | relocation = 0; | |
1763 | } | |
1764 | else | |
1765 | { | |
1766 | outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTP); | |
1767 | ||
1768 | /* NULL if we had an error. */ | |
1769 | relocation -= elf_hash_table (info)->tls_sec == NULL | |
1770 | ? 0 : elf_hash_table (info)->tls_sec->vma; | |
1771 | } | |
1772 | ||
1773 | outrel.r_offset = (sgot->output_section->vma | |
1774 | + sgot->output_offset | |
1775 | + off); | |
1776 | outrel.r_addend = relocation; | |
1777 | loc = srelgot->contents; | |
1778 | loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela); | |
1779 | ||
1780 | /* NULL if we had an error. */ | |
1781 | if (srelgot->contents != NULL) | |
1782 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
1783 | } | |
1784 | else | |
1785 | off &= ~3; | |
1786 | ||
1787 | relocation = sgot->output_offset + off | |
1788 | + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0); | |
1789 | } | |
1790 | ||
1791 | /* The GOT-relative offset to the GOT entry is the | |
1792 | relocation, or for R_CRIS_32_GD, the actual address of | |
1793 | the GOT entry. */ | |
1794 | break; | |
1795 | ||
75f500d7 | 1796 | case R_CRIS_32_IE: |
0e1862bb | 1797 | if (bfd_link_pic (info)) |
75f500d7 HPN |
1798 | { |
1799 | bfd_set_error (bfd_error_invalid_operation); | |
1800 | ||
1801 | /* We've already informed in cris_elf_check_relocs that | |
1802 | this is an error. */ | |
1803 | return FALSE; | |
1804 | } | |
1805 | /* Fall through. */ | |
1806 | ||
100382c7 HPN |
1807 | case R_CRIS_32_GOT_TPREL: |
1808 | case R_CRIS_16_GOT_TPREL: | |
1809 | if (rel->r_addend != 0) | |
1810 | { | |
1811 | /* We can't do anything for a relocation which is | |
1812 | against a symbol *plus offset*. GOT holds | |
1813 | relocations for symbols. Make this an error; the | |
1814 | compiler isn't allowed to pass us these kinds of | |
1815 | things. */ | |
4eca0228 | 1816 | _bfd_error_handler |
695344c0 | 1817 | /* xgettext:c-format */ |
d42c267e | 1818 | (_("%B, section %A: relocation %s with non-zero addend %Ld" |
100382c7 HPN |
1819 | " against symbol `%s'"), |
1820 | input_bfd, | |
1821 | input_section, | |
1822 | cris_elf_howto_table[r_type].name, | |
1823 | rel->r_addend, | |
1824 | symname[0] != '\0' ? symname : _("[whose name is lost]")); | |
1825 | bfd_set_error (bfd_error_bad_value); | |
1826 | return FALSE; | |
1827 | } | |
1828 | ||
0e1862bb | 1829 | if (!bfd_link_pic (info) |
26a48bb3 | 1830 | && (h == NULL || h->def_regular || ELF_COMMON_DEF_P (h))) |
100382c7 HPN |
1831 | { |
1832 | /* Known contents of the GOT. */ | |
1833 | bfd_vma off; | |
1834 | ||
1835 | /* The symbol is defined in the program, so just write | |
1bc86aea | 1836 | the -prog_tls_size+known_tpoffset into the GOT. */ |
100382c7 | 1837 | relocation -= elf_hash_table (info)->tls_sec->vma; |
f6f05983 | 1838 | relocation -= elf_hash_table (info)->tls_size; |
100382c7 HPN |
1839 | |
1840 | if (h != NULL) | |
1841 | off = h->got.offset; | |
1842 | else | |
1843 | off = local_got_offsets[r_symndx]; | |
1844 | ||
1845 | /* Bit 0 is used to mark whether we've emitted the required | |
1846 | entry (and if needed R_CRIS_32_TPREL reloc). Bit 1 | |
1847 | is used similarly for R_CRIS_DTP, see above. */ | |
1848 | if ((off & 1) == 0) | |
1849 | { | |
1850 | off &= ~3; | |
1851 | ||
1852 | if (h != NULL) | |
1853 | h->got.offset |= 1; | |
1854 | else | |
1855 | local_got_offsets[r_symndx] |= 1; | |
1856 | ||
1857 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
1858 | } | |
1859 | else | |
1860 | off &= ~3; | |
1861 | ||
75f500d7 HPN |
1862 | relocation = sgot->output_offset + off |
1863 | + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0); | |
100382c7 HPN |
1864 | } |
1865 | else | |
1866 | { | |
1867 | /* Emit a real relocation. */ | |
1868 | bfd_vma off; | |
1869 | ||
1870 | if (h != NULL) | |
1871 | off = h->got.offset; | |
1872 | else | |
1873 | off = local_got_offsets[r_symndx]; | |
1874 | ||
1875 | /* See above re usage of bit 0 and 1. */ | |
1876 | if ((off & 1) == 0) | |
1877 | { | |
1878 | Elf_Internal_Rela outrel; | |
1879 | bfd_byte *loc; | |
1880 | ||
1881 | off &= ~3; | |
1882 | ||
1883 | if (h != NULL) | |
1884 | h->got.offset |= 1; | |
1885 | else | |
1886 | local_got_offsets[r_symndx] |= 1; | |
1887 | ||
ce558b89 | 1888 | srelgot = htab->root.srelgot; |
100382c7 HPN |
1889 | BFD_ASSERT (srelgot != NULL); |
1890 | ||
1891 | if (h != NULL && h->dynindx != -1) | |
1892 | { | |
1893 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_32_TPREL); | |
1894 | relocation = 0; | |
1895 | } | |
1896 | else | |
1897 | { | |
1898 | outrel.r_info = ELF32_R_INFO (0, R_CRIS_32_TPREL); | |
1899 | ||
1900 | /* NULL if we had an error. */ | |
1901 | relocation -= elf_hash_table (info)->tls_sec == NULL | |
1902 | ? 0 : elf_hash_table (info)->tls_sec->vma; | |
1903 | } | |
1904 | ||
1905 | /* Just "define" the initial contents in some | |
1906 | semi-logical way. */ | |
1907 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
1908 | ||
1909 | outrel.r_offset = (sgot->output_section->vma | |
1910 | + sgot->output_offset | |
1911 | + off); | |
1912 | outrel.r_addend = relocation; | |
1913 | loc = srelgot->contents; | |
1914 | loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela); | |
1915 | /* NULL if we had an error. */ | |
1916 | if (srelgot->contents != NULL) | |
1917 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
1918 | } | |
1919 | else | |
1920 | off &= ~3; | |
1921 | ||
75f500d7 HPN |
1922 | relocation = sgot->output_offset + off |
1923 | + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0); | |
100382c7 HPN |
1924 | } |
1925 | ||
75f500d7 HPN |
1926 | /* The GOT-relative offset to the GOT entry is the relocation, |
1927 | or for R_CRIS_32_GD, the actual address of the GOT entry. */ | |
100382c7 HPN |
1928 | break; |
1929 | ||
1930 | case R_CRIS_16_TPREL: | |
1931 | case R_CRIS_32_TPREL: | |
1932 | /* This relocation must only be performed against symbols | |
1933 | defined in an ordinary (non-DSO) object. */ | |
0e1862bb | 1934 | if (bfd_link_pic (info)) |
100382c7 HPN |
1935 | { |
1936 | bfd_set_error (bfd_error_invalid_operation); | |
1937 | ||
1938 | /* We've already informed in cris_elf_check_relocs that | |
1939 | this is an error. */ | |
1940 | return FALSE; | |
1941 | } | |
1942 | ||
1943 | if (h != NULL | |
1944 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
34d3d6b9 | 1945 | && !(h->def_regular || ELF_COMMON_DEF_P (h)) |
100382c7 HPN |
1946 | /* If it's undefined, then an error message has already |
1947 | been emitted. */ | |
1948 | && h->root.type != bfd_link_hash_undefined) | |
1949 | { | |
4eca0228 | 1950 | _bfd_error_handler |
695344c0 | 1951 | /* xgettext:c-format */ |
100382c7 HPN |
1952 | (_("%B, section %A: relocation %s is" |
1953 | " not allowed for symbol: `%s'" | |
1954 | " which is defined outside the program," | |
1955 | " perhaps a declaration mixup?"), | |
1956 | input_bfd, | |
1957 | input_section, | |
1958 | cris_elf_howto_table[r_type].name, | |
1959 | symname); | |
1960 | bfd_set_error (bfd_error_bad_value); | |
1961 | return FALSE; | |
1962 | } | |
1963 | ||
1964 | /* NULL if we had an error. */ | |
1965 | relocation -= elf_hash_table (info)->tls_sec == NULL | |
1bc86aea HPN |
1966 | ? 0 |
1967 | : (elf_hash_table (info)->tls_sec->vma | |
f6f05983 | 1968 | + elf_hash_table (info)->tls_size); |
100382c7 HPN |
1969 | |
1970 | /* The TLS-relative offset is the relocation. */ | |
1971 | break; | |
1972 | ||
1973 | default: | |
1974 | BFD_FAIL (); | |
1975 | return FALSE; | |
915e5146 HPN |
1976 | } |
1977 | ||
1978 | r = cris_final_link_relocate (howto, input_bfd, input_section, | |
1979 | contents, rel, relocation); | |
1980 | ||
1981 | if (r != bfd_reloc_ok) | |
1982 | { | |
1983 | const char * msg = (const char *) NULL; | |
1984 | ||
1985 | switch (r) | |
1986 | { | |
1987 | case bfd_reloc_overflow: | |
1a72702b | 1988 | (*info->callbacks->reloc_overflow) |
dfeffb9f L |
1989 | (info, (h ? &h->root : NULL), symname, howto->name, |
1990 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
100382c7 HPN |
1991 | if (additional_relocation_error_msg_count > 0) |
1992 | { | |
1993 | additional_relocation_error_msg_count--; | |
1994 | switch (r_type) | |
1995 | { | |
1996 | case R_CRIS_16_GOTPLT: | |
1997 | case R_CRIS_16_GOT: | |
1998 | ||
1999 | /* Not just TLS is involved here, so we make | |
2000 | generation and message depend on -fPIC/-fpic | |
2001 | only. */ | |
2002 | case R_CRIS_16_GOT_TPREL: | |
2003 | case R_CRIS_16_GOT_GD: | |
4eca0228 | 2004 | _bfd_error_handler |
100382c7 HPN |
2005 | (_("(too many global variables for -fpic:" |
2006 | " recompile with -fPIC)")); | |
2007 | break; | |
2008 | ||
2009 | case R_CRIS_16_TPREL: | |
2010 | case R_CRIS_16_DTPREL: | |
4eca0228 | 2011 | _bfd_error_handler |
100382c7 HPN |
2012 | (_("(thread-local data too big for -fpic or" |
2013 | " -msmall-tls: recompile with -fPIC or" | |
2014 | " -mno-small-tls)")); | |
2015 | break; | |
2016 | ||
2017 | /* No known cause for overflow for other relocs. */ | |
2018 | default: | |
2019 | break; | |
2020 | } | |
2021 | } | |
915e5146 HPN |
2022 | break; |
2023 | ||
2024 | case bfd_reloc_undefined: | |
1a72702b AM |
2025 | (*info->callbacks->undefined_symbol) |
2026 | (info, symname, input_bfd, input_section, rel->r_offset, TRUE); | |
915e5146 HPN |
2027 | break; |
2028 | ||
2029 | case bfd_reloc_outofrange: | |
2030 | msg = _("internal error: out of range error"); | |
2031 | break; | |
2032 | ||
2033 | case bfd_reloc_notsupported: | |
2034 | msg = _("internal error: unsupported relocation error"); | |
2035 | break; | |
2036 | ||
2037 | case bfd_reloc_dangerous: | |
2038 | msg = _("internal error: dangerous relocation"); | |
2039 | break; | |
2040 | ||
2041 | default: | |
2042 | msg = _("internal error: unknown error"); | |
2043 | break; | |
2044 | } | |
2045 | ||
2046 | if (msg) | |
1a72702b AM |
2047 | (*info->callbacks->warning) (info, msg, symname, input_bfd, |
2048 | input_section, rel->r_offset); | |
915e5146 HPN |
2049 | } |
2050 | } | |
2051 | ||
b34976b6 | 2052 | return TRUE; |
915e5146 HPN |
2053 | } |
2054 | \f | |
2055 | /* Finish up dynamic symbol handling. We set the contents of various | |
2056 | dynamic sections here. */ | |
2057 | ||
b34976b6 | 2058 | static bfd_boolean |
4dfe6ac6 NC |
2059 | elf_cris_finish_dynamic_symbol (bfd *output_bfd, |
2060 | struct bfd_link_info *info, | |
2061 | struct elf_link_hash_entry *h, | |
2062 | Elf_Internal_Sym *sym) | |
915e5146 | 2063 | { |
4dfe6ac6 | 2064 | struct elf_cris_link_hash_table * htab; |
bac23f82 HPN |
2065 | |
2066 | /* Where in the plt entry to put values. */ | |
915e5146 HPN |
2067 | int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16; |
2068 | ||
bac23f82 HPN |
2069 | /* What offset to add to the distance to the first PLT entry for the |
2070 | value at plt_off3. */ | |
2071 | int plt_off3_value_bias = 4; | |
2072 | ||
2073 | /* Where in the PLT entry the call-dynlink-stub is (happens to be same | |
2074 | for PIC and non-PIC for v32 and pre-v32). */ | |
2075 | int plt_stub_offset = 8; | |
2076 | int plt_entry_size = PLT_ENTRY_SIZE; | |
2077 | const bfd_byte *plt_entry = elf_cris_plt_entry; | |
2078 | const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry; | |
2079 | ||
4dfe6ac6 NC |
2080 | htab = elf_cris_hash_table (info); |
2081 | if (htab == NULL) | |
2082 | return FALSE; | |
2083 | ||
bac23f82 HPN |
2084 | /* Adjust the various PLT entry offsets. */ |
2085 | if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32) | |
2086 | { | |
2087 | plt_off2 = 14; | |
2088 | plt_off3 = 20; | |
2089 | plt_off3_value_bias = -2; | |
2090 | plt_stub_offset = 12; | |
2091 | plt_entry_size = PLT_ENTRY_SIZE_V32; | |
2092 | plt_entry = elf_cris_plt_entry_v32; | |
2093 | plt_pic_entry = elf_cris_pic_plt_entry_v32; | |
2094 | } | |
2095 | ||
915e5146 HPN |
2096 | if (h->plt.offset != (bfd_vma) -1) |
2097 | { | |
2098 | asection *splt; | |
2099 | asection *sgotplt; | |
915e5146 HPN |
2100 | asection *srela; |
2101 | bfd_vma got_base; | |
2102 | ||
2103 | bfd_vma gotplt_offset | |
100382c7 | 2104 | = elf_cris_hash_entry (h)->gotplt_offset; |
915e5146 | 2105 | Elf_Internal_Rela rela; |
947216bf | 2106 | bfd_byte *loc; |
b34976b6 | 2107 | bfd_boolean has_gotplt = gotplt_offset != 0; |
915e5146 | 2108 | |
0bdf8d40 HPN |
2109 | /* Get the index in the .rela.plt relocations for the .got.plt |
2110 | entry that corresponds to this symbol. | |
2111 | We have to count backwards here, and the result is only valid | |
2112 | as an index into .rela.plt. We also have to undo the effect | |
2113 | of the R_CRIS_DTPMOD entry at .got index 3 (offset 12 into | |
2114 | .got.plt) for which gotplt_offset is adjusted, because while | |
2115 | that entry goes into .got.plt, its relocation goes into | |
2116 | .rela.got, not .rela.plt. (It's not PLT-specific; not to be | |
2117 | processed as part of the runtime lazy .rela.plt relocation). | |
2118 | FIXME: There be literal constants here... */ | |
2119 | bfd_vma rela_plt_index | |
4dfe6ac6 | 2120 | = (htab->dtpmod_refcount != 0 |
0bdf8d40 | 2121 | ? gotplt_offset/4 - 2 - 3 : gotplt_offset/4 - 3); |
915e5146 HPN |
2122 | |
2123 | /* Get the offset into the .got table of the entry that corresponds | |
2124 | to this function. Note that we embed knowledge that "incoming" | |
2125 | .got goes after .got.plt in the output without padding (pointer | |
2126 | aligned). However, that knowledge is present in several other | |
c152c796 | 2127 | places too. */ |
915e5146 HPN |
2128 | bfd_vma got_offset |
2129 | = (has_gotplt | |
2130 | ? gotplt_offset | |
4dfe6ac6 | 2131 | : h->got.offset + htab->next_gotplt_entry); |
915e5146 HPN |
2132 | |
2133 | /* This symbol has an entry in the procedure linkage table. Set it | |
2134 | up. */ | |
2135 | ||
2136 | BFD_ASSERT (h->dynindx != -1); | |
2137 | ||
ce558b89 AM |
2138 | splt = htab->root.splt; |
2139 | sgotplt = htab->root.sgotplt; | |
2140 | srela = htab->root.srelplt; | |
915e5146 HPN |
2141 | BFD_ASSERT (splt != NULL && sgotplt != NULL |
2142 | && (! has_gotplt || srela != NULL)); | |
2143 | ||
2144 | got_base = sgotplt->output_section->vma + sgotplt->output_offset; | |
2145 | ||
2146 | /* Fill in the entry in the procedure linkage table. */ | |
0e1862bb | 2147 | if (! bfd_link_pic (info)) |
915e5146 | 2148 | { |
bac23f82 HPN |
2149 | memcpy (splt->contents + h->plt.offset, plt_entry, |
2150 | plt_entry_size); | |
915e5146 HPN |
2151 | |
2152 | /* We need to enter the absolute address of the GOT entry here. */ | |
2153 | bfd_put_32 (output_bfd, got_base + got_offset, | |
2154 | splt->contents + h->plt.offset + plt_off1); | |
2155 | } | |
2156 | else | |
2157 | { | |
bac23f82 HPN |
2158 | memcpy (splt->contents + h->plt.offset, plt_pic_entry, |
2159 | plt_entry_size); | |
915e5146 HPN |
2160 | bfd_put_32 (output_bfd, got_offset, |
2161 | splt->contents + h->plt.offset + plt_off1); | |
2162 | } | |
2163 | ||
2164 | /* Fill in the plt entry and make a relocation, if this is a "real" | |
2165 | PLT entry. */ | |
2166 | if (has_gotplt) | |
2167 | { | |
bac23f82 | 2168 | /* Fill in the offset to the reloc table. */ |
915e5146 | 2169 | bfd_put_32 (output_bfd, |
0bdf8d40 | 2170 | rela_plt_index * sizeof (Elf32_External_Rela), |
915e5146 HPN |
2171 | splt->contents + h->plt.offset + plt_off2); |
2172 | ||
2173 | /* Fill in the offset to the first PLT entry, where to "jump". */ | |
bac23f82 HPN |
2174 | bfd_put_32 (output_bfd, |
2175 | - (h->plt.offset + plt_off3 + plt_off3_value_bias), | |
915e5146 HPN |
2176 | splt->contents + h->plt.offset + plt_off3); |
2177 | ||
2178 | /* Fill in the entry in the global offset table with the address of | |
2179 | the relocating stub. */ | |
2180 | bfd_put_32 (output_bfd, | |
2181 | (splt->output_section->vma | |
2182 | + splt->output_offset | |
2183 | + h->plt.offset | |
bac23f82 | 2184 | + plt_stub_offset), |
915e5146 HPN |
2185 | sgotplt->contents + got_offset); |
2186 | ||
2187 | /* Fill in the entry in the .rela.plt section. */ | |
2188 | rela.r_offset = (sgotplt->output_section->vma | |
2189 | + sgotplt->output_offset | |
2190 | + got_offset); | |
2191 | rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT); | |
2192 | rela.r_addend = 0; | |
0bdf8d40 | 2193 | loc = srela->contents + rela_plt_index * sizeof (Elf32_External_Rela); |
947216bf | 2194 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
915e5146 HPN |
2195 | } |
2196 | ||
f5385ebf | 2197 | if (!h->def_regular) |
915e5146 HPN |
2198 | { |
2199 | /* Mark the symbol as undefined, rather than as defined in | |
2200 | the .plt section. Leave the value alone. */ | |
2201 | sym->st_shndx = SHN_UNDEF; | |
2202 | ||
2203 | /* FIXME: From elf32-sparc.c 2001-02-19 (1.18). I still don't | |
2204 | know whether resetting the value is significant; if it really | |
2205 | is, rather than a quirk or bug in the sparc port, then I | |
2206 | believe we'd see this elsewhere. */ | |
2207 | /* If the symbol is weak, we do need to clear the value. | |
2208 | Otherwise, the PLT entry would provide a definition for | |
2209 | the symbol even if the symbol wasn't defined anywhere, | |
2210 | and so the symbol would never be NULL. */ | |
f5385ebf | 2211 | if (!h->ref_regular_nonweak) |
915e5146 HPN |
2212 | sym->st_value = 0; |
2213 | } | |
2214 | } | |
2215 | ||
e4a2175c HPN |
2216 | /* For an ordinary program, we emit .got relocs only for symbols that |
2217 | are in the dynamic-symbols table and are either defined by the | |
2218 | program or are undefined weak symbols, or are function symbols | |
2219 | where we do not output a PLT: the PLT reloc was output above and all | |
2220 | references to the function symbol are redirected to the PLT. */ | |
4d96d128 | 2221 | if (h->got.offset != (bfd_vma) -1 |
100382c7 | 2222 | && (elf_cris_hash_entry (h)->reg_got_refcount > 0) |
0e1862bb | 2223 | && (bfd_link_pic (info) |
6849c52f | 2224 | || (h->dynindx != -1 |
e4a2175c | 2225 | && h->plt.offset == (bfd_vma) -1 |
f5385ebf | 2226 | && !h->def_regular |
6849c52f | 2227 | && h->root.type != bfd_link_hash_undefweak))) |
915e5146 HPN |
2228 | { |
2229 | asection *sgot; | |
2230 | asection *srela; | |
2231 | Elf_Internal_Rela rela; | |
947216bf | 2232 | bfd_byte *loc; |
dc810e39 | 2233 | bfd_byte *where; |
915e5146 HPN |
2234 | |
2235 | /* This symbol has an entry in the global offset table. Set it up. */ | |
2236 | ||
ce558b89 AM |
2237 | sgot = htab->root.sgot; |
2238 | srela = htab->root.srelgot; | |
915e5146 HPN |
2239 | BFD_ASSERT (sgot != NULL && srela != NULL); |
2240 | ||
2241 | rela.r_offset = (sgot->output_section->vma | |
2242 | + sgot->output_offset | |
dc810e39 | 2243 | + (h->got.offset &~ (bfd_vma) 1)); |
915e5146 HPN |
2244 | |
2245 | /* If this is a static link, or it is a -Bsymbolic link and the | |
2246 | symbol is defined locally or was forced to be local because | |
2247 | of a version file, we just want to emit a RELATIVE reloc. | |
2248 | The entry in the global offset table will already have been | |
2249 | initialized in the relocate_section function. */ | |
dc810e39 | 2250 | where = sgot->contents + (h->got.offset &~ (bfd_vma) 1); |
915e5146 | 2251 | if (! elf_hash_table (info)->dynamic_sections_created |
0e1862bb | 2252 | || (bfd_link_pic (info) |
cb1c8103 | 2253 | && (SYMBOLIC_BIND (info, h) || h->dynindx == -1) |
f5385ebf | 2254 | && h->def_regular)) |
915e5146 HPN |
2255 | { |
2256 | rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE); | |
dc810e39 | 2257 | rela.r_addend = bfd_get_signed_32 (output_bfd, where); |
915e5146 HPN |
2258 | } |
2259 | else | |
2260 | { | |
dc810e39 | 2261 | bfd_put_32 (output_bfd, (bfd_vma) 0, where); |
915e5146 HPN |
2262 | rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT); |
2263 | rela.r_addend = 0; | |
2264 | } | |
2265 | ||
947216bf AM |
2266 | loc = srela->contents; |
2267 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
2268 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
915e5146 HPN |
2269 | } |
2270 | ||
f5385ebf | 2271 | if (h->needs_copy) |
915e5146 HPN |
2272 | { |
2273 | asection *s; | |
2274 | Elf_Internal_Rela rela; | |
947216bf | 2275 | bfd_byte *loc; |
915e5146 HPN |
2276 | |
2277 | /* This symbol needs a copy reloc. Set it up. */ | |
2278 | ||
2279 | BFD_ASSERT (h->dynindx != -1 | |
2280 | && (h->root.type == bfd_link_hash_defined | |
2281 | || h->root.type == bfd_link_hash_defweak)); | |
2282 | ||
afbf7e8e | 2283 | if (h->root.u.def.section == htab->root.sdynrelro) |
1fbd05e1 HPN |
2284 | s = htab->root.sreldynrelro; |
2285 | else | |
2286 | s = htab->root.srelbss; | |
915e5146 HPN |
2287 | |
2288 | rela.r_offset = (h->root.u.def.value | |
2289 | + h->root.u.def.section->output_section->vma | |
2290 | + h->root.u.def.section->output_offset); | |
2291 | rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY); | |
2292 | rela.r_addend = 0; | |
947216bf AM |
2293 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
2294 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
915e5146 HPN |
2295 | } |
2296 | ||
2297 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
9637f6ef | 2298 | if (h == elf_hash_table (info)->hdynamic |
22edb2f1 | 2299 | || h == elf_hash_table (info)->hgot) |
915e5146 HPN |
2300 | sym->st_shndx = SHN_ABS; |
2301 | ||
b34976b6 | 2302 | return TRUE; |
915e5146 HPN |
2303 | } |
2304 | \f | |
100382c7 HPN |
2305 | /* Finish up the dynamic sections. Do *not* emit relocs here, as their |
2306 | offsets were changed, as part of -z combreloc handling, from those we | |
2307 | computed. */ | |
915e5146 | 2308 | |
b34976b6 | 2309 | static bfd_boolean |
2c3fc389 NC |
2310 | elf_cris_finish_dynamic_sections (bfd *output_bfd, |
2311 | struct bfd_link_info *info) | |
915e5146 HPN |
2312 | { |
2313 | bfd *dynobj; | |
2314 | asection *sgot; | |
2315 | asection *sdyn; | |
2316 | ||
2317 | dynobj = elf_hash_table (info)->dynobj; | |
2318 | ||
ce558b89 | 2319 | sgot = elf_hash_table (info)->sgotplt; |
915e5146 | 2320 | BFD_ASSERT (sgot != NULL); |
3d4d4302 | 2321 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
915e5146 HPN |
2322 | |
2323 | if (elf_hash_table (info)->dynamic_sections_created) | |
2324 | { | |
2325 | asection *splt; | |
2326 | Elf32_External_Dyn *dyncon, *dynconend; | |
2327 | ||
ce558b89 | 2328 | splt = elf_hash_table (info)->splt; |
915e5146 HPN |
2329 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
2330 | ||
2331 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 2332 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
915e5146 HPN |
2333 | for (; dyncon < dynconend; dyncon++) |
2334 | { | |
2335 | Elf_Internal_Dyn dyn; | |
2336 | asection *s; | |
2337 | ||
2338 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
2339 | ||
2340 | switch (dyn.d_tag) | |
2341 | { | |
2342 | default: | |
2343 | break; | |
2344 | ||
2345 | case DT_PLTGOT: | |
4ade44b7 | 2346 | dyn.d_un.d_ptr = sgot->output_section->vma + sgot->output_offset; |
915e5146 HPN |
2347 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
2348 | break; | |
2349 | ||
2350 | case DT_JMPREL: | |
2351 | /* Yes, we *can* have a .plt and no .plt.rela, for instance | |
2352 | if all symbols are found in the .got (not .got.plt). */ | |
ce558b89 | 2353 | s = elf_hash_table (info)->srelplt; |
4ade44b7 AM |
2354 | dyn.d_un.d_ptr = s != NULL ? (s->output_section->vma |
2355 | + s->output_offset) : 0; | |
915e5146 HPN |
2356 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
2357 | break; | |
2358 | ||
2359 | case DT_PLTRELSZ: | |
ce558b89 | 2360 | s = elf_hash_table (info)->srelplt; |
915e5146 HPN |
2361 | if (s == NULL) |
2362 | dyn.d_un.d_val = 0; | |
915e5146 | 2363 | else |
eea6121a | 2364 | dyn.d_un.d_val = s->size; |
915e5146 HPN |
2365 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
2366 | break; | |
915e5146 HPN |
2367 | } |
2368 | } | |
2369 | ||
2370 | /* Fill in the first entry in the procedure linkage table. */ | |
eea6121a | 2371 | if (splt->size > 0) |
915e5146 | 2372 | { |
bac23f82 HPN |
2373 | if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32) |
2374 | { | |
0e1862bb | 2375 | if (bfd_link_pic (info)) |
bac23f82 HPN |
2376 | memcpy (splt->contents, elf_cris_pic_plt0_entry_v32, |
2377 | PLT_ENTRY_SIZE_V32); | |
2378 | else | |
2379 | { | |
2380 | memcpy (splt->contents, elf_cris_plt0_entry_v32, | |
2381 | PLT_ENTRY_SIZE_V32); | |
2382 | bfd_put_32 (output_bfd, | |
2383 | sgot->output_section->vma | |
2384 | + sgot->output_offset + 4, | |
2385 | splt->contents + 4); | |
2386 | ||
2387 | elf_section_data (splt->output_section)->this_hdr.sh_entsize | |
2388 | = PLT_ENTRY_SIZE_V32; | |
2389 | } | |
2390 | } | |
915e5146 | 2391 | else |
bac23f82 | 2392 | { |
0e1862bb | 2393 | if (bfd_link_pic (info)) |
bac23f82 HPN |
2394 | memcpy (splt->contents, elf_cris_pic_plt0_entry, |
2395 | PLT_ENTRY_SIZE); | |
2396 | else | |
2397 | { | |
2398 | memcpy (splt->contents, elf_cris_plt0_entry, | |
2399 | PLT_ENTRY_SIZE); | |
2400 | bfd_put_32 (output_bfd, | |
2401 | sgot->output_section->vma | |
2402 | + sgot->output_offset + 4, | |
2403 | splt->contents + 6); | |
2404 | bfd_put_32 (output_bfd, | |
2405 | sgot->output_section->vma | |
2406 | + sgot->output_offset + 8, | |
2407 | splt->contents + 14); | |
2408 | ||
2409 | elf_section_data (splt->output_section)->this_hdr.sh_entsize | |
2410 | = PLT_ENTRY_SIZE; | |
2411 | } | |
915e5146 HPN |
2412 | } |
2413 | } | |
2414 | } | |
2415 | ||
2416 | /* Fill in the first three entries in the global offset table. */ | |
eea6121a | 2417 | if (sgot->size > 0) |
915e5146 HPN |
2418 | { |
2419 | if (sdyn == NULL) | |
2420 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
2421 | else | |
2422 | bfd_put_32 (output_bfd, | |
2423 | sdyn->output_section->vma + sdyn->output_offset, | |
2424 | sgot->contents); | |
2425 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
2426 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
2427 | } | |
2428 | ||
2429 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
2430 | ||
b34976b6 | 2431 | return TRUE; |
06c15ad7 HPN |
2432 | } |
2433 | \f | |
2434 | /* Return the section that should be marked against GC for a given | |
2435 | relocation. */ | |
2436 | ||
2437 | static asection * | |
07adf181 AM |
2438 | cris_elf_gc_mark_hook (asection *sec, |
2439 | struct bfd_link_info *info, | |
2440 | Elf_Internal_Rela *rel, | |
2441 | struct elf_link_hash_entry *h, | |
2442 | Elf_Internal_Sym *sym) | |
06c15ad7 | 2443 | { |
100382c7 | 2444 | enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info); |
06c15ad7 | 2445 | if (h != NULL) |
100382c7 | 2446 | switch (r_type) |
07adf181 AM |
2447 | { |
2448 | case R_CRIS_GNU_VTINHERIT: | |
2449 | case R_CRIS_GNU_VTENTRY: | |
2450 | return NULL; | |
100382c7 HPN |
2451 | |
2452 | default: | |
2453 | break; | |
07adf181 | 2454 | } |
06c15ad7 | 2455 | |
07adf181 | 2456 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
06c15ad7 HPN |
2457 | } |
2458 | ||
2459 | /* Update the got entry reference counts for the section being removed. */ | |
2460 | ||
b34976b6 | 2461 | static bfd_boolean |
07adf181 AM |
2462 | cris_elf_gc_sweep_hook (bfd *abfd, |
2463 | struct bfd_link_info *info, | |
2464 | asection *sec, | |
2465 | const Elf_Internal_Rela *relocs) | |
06c15ad7 | 2466 | { |
4dfe6ac6 | 2467 | struct elf_cris_link_hash_table * htab; |
915e5146 HPN |
2468 | Elf_Internal_Shdr *symtab_hdr; |
2469 | struct elf_link_hash_entry **sym_hashes; | |
2470 | bfd_signed_vma *local_got_refcounts; | |
2471 | const Elf_Internal_Rela *rel, *relend; | |
915e5146 HPN |
2472 | bfd *dynobj; |
2473 | asection *sgot; | |
2474 | asection *srelgot; | |
2475 | ||
0e1862bb | 2476 | if (bfd_link_relocatable (info)) |
7dda2462 TG |
2477 | return TRUE; |
2478 | ||
915e5146 HPN |
2479 | dynobj = elf_hash_table (info)->dynobj; |
2480 | if (dynobj == NULL) | |
b34976b6 | 2481 | return TRUE; |
915e5146 | 2482 | |
4dfe6ac6 NC |
2483 | htab = elf_cris_hash_table (info); |
2484 | if (htab == NULL) | |
2485 | return FALSE; | |
2486 | ||
babfd660 KH |
2487 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
2488 | sym_hashes = elf_sym_hashes (abfd); | |
2489 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
2490 | ||
ce558b89 AM |
2491 | sgot = htab->root.sgot; |
2492 | srelgot = htab->root.srelgot; | |
915e5146 HPN |
2493 | |
2494 | relend = relocs + sec->reloc_count; | |
2495 | for (rel = relocs; rel < relend; rel++) | |
2496 | { | |
babfd660 | 2497 | unsigned long r_symndx; |
3eb128b2 | 2498 | struct elf_link_hash_entry *h = NULL; |
100382c7 HPN |
2499 | bfd_signed_vma got_element_size = 4; |
2500 | bfd_signed_vma *specific_refcount = NULL; | |
2501 | enum elf_cris_reloc_type r_type; | |
3eb128b2 AM |
2502 | |
2503 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2504 | if (r_symndx >= symtab_hdr->sh_info) | |
2505 | { | |
2506 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
2507 | while (h->root.type == bfd_link_hash_indirect | |
2508 | || h->root.type == bfd_link_hash_warning) | |
2509 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2510 | } | |
babfd660 | 2511 | |
100382c7 HPN |
2512 | r_type = ELF32_R_TYPE (rel->r_info); |
2513 | switch (r_type) | |
2514 | { | |
2515 | case R_CRIS_32_GOT: | |
2516 | case R_CRIS_16_GOT: | |
2517 | case R_CRIS_16_GOTPLT: | |
2518 | case R_CRIS_32_GOTPLT: | |
2519 | specific_refcount = h != NULL | |
2520 | ? &((struct elf_cris_link_hash_entry *) h)->reg_got_refcount | |
2521 | : &local_got_refcounts[LGOT_REG_NDX (r_symndx)]; | |
2522 | break; | |
2523 | ||
2524 | case R_CRIS_32_GD: | |
2525 | case R_CRIS_32_GOT_GD: | |
2526 | case R_CRIS_16_GOT_GD: | |
2527 | got_element_size = 8; | |
2528 | specific_refcount = h != NULL | |
2529 | ? &((struct elf_cris_link_hash_entry *) h)->dtp_refcount | |
2530 | : &local_got_refcounts[LGOT_DTP_NDX (r_symndx)]; | |
2531 | break; | |
2532 | ||
75f500d7 | 2533 | case R_CRIS_32_IE: |
100382c7 HPN |
2534 | case R_CRIS_16_GOT_TPREL: |
2535 | case R_CRIS_32_GOT_TPREL: | |
2536 | specific_refcount = h != NULL | |
2537 | ? &((struct elf_cris_link_hash_entry *) h)->tprel_refcount | |
2538 | : &local_got_refcounts[LGOT_TPREL_NDX (r_symndx)]; | |
2539 | break; | |
2540 | ||
2541 | default: | |
2542 | break; | |
2543 | } | |
2544 | ||
2545 | switch (r_type) | |
915e5146 | 2546 | { |
75f500d7 | 2547 | case R_CRIS_32_IE: |
100382c7 HPN |
2548 | case R_CRIS_32_GD: |
2549 | case R_CRIS_16_GOT_TPREL: | |
2550 | case R_CRIS_32_GOT_TPREL: | |
2551 | case R_CRIS_32_GOT_GD: | |
2552 | case R_CRIS_16_GOT_GD: | |
915e5146 HPN |
2553 | case R_CRIS_16_GOT: |
2554 | case R_CRIS_32_GOT: | |
3eb128b2 | 2555 | if (h != NULL) |
915e5146 | 2556 | { |
100382c7 HPN |
2557 | /* If the counters are 0 when we got here, we've |
2558 | miscounted somehow somewhere, an internal error. */ | |
2559 | BFD_ASSERT (h->got.refcount > 0); | |
2560 | --h->got.refcount; | |
2561 | ||
2562 | BFD_ASSERT (*specific_refcount > 0); | |
2563 | --*specific_refcount; | |
2564 | if (*specific_refcount == 0) | |
915e5146 | 2565 | { |
100382c7 HPN |
2566 | /* We don't need the .got entry any more. */ |
2567 | sgot->size -= got_element_size; | |
2568 | srelgot->size -= sizeof (Elf32_External_Rela); | |
915e5146 HPN |
2569 | } |
2570 | break; | |
2571 | } | |
2572 | ||
2573 | local_got_reloc: | |
2574 | if (local_got_refcounts != NULL) | |
2575 | { | |
100382c7 HPN |
2576 | /* If the counters are 0 when we got here, we've |
2577 | miscounted somehow somewhere, an internal error. */ | |
2578 | BFD_ASSERT (local_got_refcounts[r_symndx] > 0); | |
2579 | --local_got_refcounts[r_symndx]; | |
2580 | ||
2581 | BFD_ASSERT (*specific_refcount > 0); | |
2582 | --*specific_refcount; | |
2583 | if (*specific_refcount == 0) | |
915e5146 | 2584 | { |
100382c7 HPN |
2585 | /* We don't need the .got entry any more. */ |
2586 | sgot->size -= got_element_size; | |
0e1862bb | 2587 | if (bfd_link_pic (info)) |
100382c7 | 2588 | srelgot->size -= sizeof (Elf32_External_Rela); |
915e5146 HPN |
2589 | } |
2590 | } | |
2591 | break; | |
2592 | ||
2593 | case R_CRIS_16_GOTPLT: | |
2594 | case R_CRIS_32_GOTPLT: | |
2595 | /* For local symbols, treat these like GOT relocs. */ | |
3eb128b2 | 2596 | if (h == NULL) |
915e5146 | 2597 | goto local_got_reloc; |
970d488d HPN |
2598 | else |
2599 | /* For global symbols, adjust the reloc-specific refcount. */ | |
2600 | elf_cris_hash_entry (h)->gotplt_refcount--; | |
e4a2175c | 2601 | /* Fall through. */ |
3eb128b2 | 2602 | |
915e5146 HPN |
2603 | case R_CRIS_32_PLT_GOTREL: |
2604 | /* FIXME: We don't garbage-collect away the .got section. */ | |
2605 | if (local_got_refcounts != NULL) | |
2606 | local_got_refcounts[-1]--; | |
2607 | /* Fall through. */ | |
3eb128b2 | 2608 | |
970d488d HPN |
2609 | case R_CRIS_8: |
2610 | case R_CRIS_16: | |
2611 | case R_CRIS_32: | |
915e5146 HPN |
2612 | case R_CRIS_8_PCREL: |
2613 | case R_CRIS_16_PCREL: | |
2614 | case R_CRIS_32_PCREL: | |
2615 | case R_CRIS_32_PLT_PCREL: | |
970d488d | 2616 | /* Negate the increment we did in cris_elf_check_relocs. */ |
3eb128b2 | 2617 | if (h != NULL) |
915e5146 | 2618 | { |
0a4787a0 HPN |
2619 | if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
2620 | && h->plt.refcount > 0) | |
915e5146 HPN |
2621 | --h->plt.refcount; |
2622 | } | |
2623 | break; | |
2624 | ||
100382c7 | 2625 | case R_CRIS_32_DTPREL: |
6718f446 HPN |
2626 | /* This'd be a .dtpreld entry in e.g. debug info. */ |
2627 | if ((sec->flags & SEC_ALLOC) == 0) | |
2628 | break; | |
2629 | /* Fall through. */ | |
100382c7 | 2630 | case R_CRIS_16_DTPREL: |
4dfe6ac6 NC |
2631 | htab->dtpmod_refcount--; |
2632 | if (htab->dtpmod_refcount == 0) | |
2633 | htab->next_gotplt_entry -= 8; | |
100382c7 HPN |
2634 | BFD_ASSERT (local_got_refcounts != NULL); |
2635 | local_got_refcounts[-1]--; | |
2636 | break; | |
2637 | ||
915e5146 HPN |
2638 | default: |
2639 | break; | |
2640 | } | |
2641 | } | |
2642 | ||
b34976b6 | 2643 | return TRUE; |
06c15ad7 HPN |
2644 | } |
2645 | ||
5d5a918a HPN |
2646 | /* The elf_backend_plt_sym_val hook function. */ |
2647 | ||
2648 | static bfd_vma | |
51806b97 HPN |
2649 | cris_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED, const asection *plt, |
2650 | const arelent *rel) | |
5d5a918a HPN |
2651 | { |
2652 | bfd_size_type plt_entry_size; | |
51806b97 HPN |
2653 | bfd_size_type pltoffs; |
2654 | bfd *abfd = plt->owner; | |
5d5a918a | 2655 | |
51806b97 HPN |
2656 | /* Same for CRIS and CRIS v32; see elf_cris_(|pic_)plt_entry(|_v32)[]. */ |
2657 | bfd_size_type plt_entry_got_offset = 2; | |
2658 | bfd_size_type plt_sec_size; | |
2659 | bfd_size_type got_vma_for_dyn; | |
2660 | asection *got; | |
2661 | ||
2662 | /* FIXME: the .got section should be readily available also when | |
2663 | we're not linking. */ | |
2664 | if ((got = bfd_get_section_by_name (abfd, ".got")) == NULL) | |
2665 | return (bfd_vma) -1; | |
2666 | ||
2667 | plt_sec_size = bfd_section_size (plt->owner, plt); | |
5d5a918a | 2668 | plt_entry_size |
51806b97 | 2669 | = (bfd_get_mach (abfd) == bfd_mach_cris_v32 |
5d5a918a HPN |
2670 | ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE); |
2671 | ||
51806b97 HPN |
2672 | /* Data in PLT is GOT-relative for DYN, but absolute for EXE. */ |
2673 | got_vma_for_dyn = (abfd->flags & EXEC_P) ? 0 : got->vma; | |
2674 | ||
2675 | /* Because we can have merged GOT entries; a single .got entry for | |
2676 | both GOT and the PLT part of the GOT (.got.plt), the index of the | |
2677 | reloc in .rela.plt is not the same as the index in the PLT. | |
2678 | Instead, we have to hunt down the GOT offset in the PLT that | |
2679 | corresponds to that of this reloc. Unfortunately, we will only | |
2680 | be called for the .rela.plt relocs, so we'll miss synthetic | |
2681 | symbols for .plt entries with merged GOT entries. (FIXME: | |
2682 | fixable by providing our own bfd_elf32_get_synthetic_symtab. | |
2683 | Doesn't seem worthwile at time of this writing.) FIXME: we've | |
2684 | gone from O(1) to O(N) (N number of PLT entries) for finding each | |
2685 | PLT address. Shouldn't matter in practice though. */ | |
2686 | ||
2687 | for (pltoffs = plt_entry_size; | |
2688 | pltoffs < plt_sec_size; | |
2689 | pltoffs += plt_entry_size) | |
2690 | { | |
2691 | bfd_size_type got_offset; | |
2692 | bfd_byte gotoffs_raw[4]; | |
68ffbac6 | 2693 | |
51806b97 HPN |
2694 | if (!bfd_get_section_contents (abfd, (asection *) plt, gotoffs_raw, |
2695 | pltoffs + plt_entry_got_offset, | |
2696 | sizeof (gotoffs_raw))) | |
2697 | return (bfd_vma) -1; | |
2698 | ||
2699 | got_offset = bfd_get_32 (abfd, gotoffs_raw); | |
2700 | if (got_offset + got_vma_for_dyn == rel->address) | |
2701 | return plt->vma + pltoffs; | |
2702 | } | |
2703 | ||
2704 | /* While it's tempting to BFD_ASSERT that we shouldn't get here, | |
2705 | that'd not be graceful behavior for invalid input. */ | |
2706 | return (bfd_vma) -1; | |
5d5a918a HPN |
2707 | } |
2708 | ||
915e5146 HPN |
2709 | /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT |
2710 | entry but we found we will not create any. Called when we find we will | |
4d96d128 HPN |
2711 | not have any PLT for this symbol, by for example |
2712 | elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link, | |
2713 | or elf_cris_size_dynamic_sections if no dynamic sections will be | |
2714 | created (we're only linking static objects). */ | |
915e5146 | 2715 | |
b34976b6 | 2716 | static bfd_boolean |
2c3fc389 | 2717 | elf_cris_adjust_gotplt_to_got (struct elf_cris_link_hash_entry *h, void * p) |
915e5146 HPN |
2718 | { |
2719 | struct bfd_link_info *info = (struct bfd_link_info *) p; | |
915e5146 | 2720 | |
970d488d | 2721 | /* A GOTPLT reloc, when activated, is supposed to be included into |
086554e8 | 2722 | the PLT refcount, when the symbol isn't set-or-forced local. */ |
970d488d | 2723 | BFD_ASSERT (h->gotplt_refcount == 0 |
086554e8 | 2724 | || h->root.plt.refcount == -1 |
970d488d HPN |
2725 | || h->gotplt_refcount <= h->root.plt.refcount); |
2726 | ||
915e5146 HPN |
2727 | /* If nobody wanted a GOTPLT with this symbol, we're done. */ |
2728 | if (h->gotplt_refcount <= 0) | |
b34976b6 | 2729 | return TRUE; |
915e5146 | 2730 | |
100382c7 | 2731 | if (h->reg_got_refcount > 0) |
915e5146 | 2732 | { |
100382c7 HPN |
2733 | /* There's a GOT entry for this symbol. Just adjust the refcounts. |
2734 | Probably not necessary at this stage, but keeping them accurate | |
915e5146 HPN |
2735 | helps avoiding surprises later. */ |
2736 | h->root.got.refcount += h->gotplt_refcount; | |
100382c7 | 2737 | h->reg_got_refcount += h->gotplt_refcount; |
5e0f5ae3 | 2738 | h->gotplt_refcount = 0; |
915e5146 HPN |
2739 | } |
2740 | else | |
2741 | { | |
4d96d128 | 2742 | /* No GOT entry for this symbol. We need to create one. */ |
8d1d654f AM |
2743 | asection *sgot; |
2744 | asection *srelgot; | |
2745 | ||
ce558b89 AM |
2746 | sgot = elf_hash_table (info)->sgot; |
2747 | srelgot = elf_hash_table (info)->srelgot; | |
915e5146 | 2748 | |
100382c7 | 2749 | /* Put accurate refcounts there. */ |
086554e8 | 2750 | BFD_ASSERT (h->root.got.refcount >= 0); |
100382c7 HPN |
2751 | h->root.got.refcount += h->gotplt_refcount; |
2752 | h->reg_got_refcount = h->gotplt_refcount; | |
915e5146 | 2753 | |
5e0f5ae3 | 2754 | h->gotplt_refcount = 0; |
915e5146 | 2755 | |
44aa49bb HPN |
2756 | /* We always have a .got and a .rela.got section if there were |
2757 | GOTPLT relocs in input. */ | |
2758 | BFD_ASSERT (sgot != NULL && srelgot != NULL); | |
915e5146 HPN |
2759 | |
2760 | /* Allocate space in the .got section. */ | |
eea6121a | 2761 | sgot->size += 4; |
915e5146 HPN |
2762 | |
2763 | /* Allocate relocation space. */ | |
eea6121a | 2764 | srelgot->size += sizeof (Elf32_External_Rela); |
915e5146 HPN |
2765 | } |
2766 | ||
b34976b6 | 2767 | return TRUE; |
915e5146 HPN |
2768 | } |
2769 | ||
2770 | /* Try to fold PLT entries with GOT entries. There are two cases when we | |
2771 | want to do this: | |
2772 | ||
2773 | - When all PLT references are GOTPLT references, and there are GOT | |
e4a2175c HPN |
2774 | references, and this is not the executable. We don't have to |
2775 | generate a PLT at all. | |
915e5146 | 2776 | |
e4a2175c HPN |
2777 | - When there are both (ordinary) PLT references and GOT references, |
2778 | and this isn't the executable. | |
915e5146 | 2779 | We want to make the PLT reference use the ordinary GOT entry rather |
e4a2175c HPN |
2780 | than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry, |
2781 | since the GOT entry will have to be resolved at startup anyway. | |
915e5146 HPN |
2782 | |
2783 | Though the latter case is handled when room for the PLT is allocated, | |
2784 | not here. | |
2785 | ||
e4a2175c HPN |
2786 | By folding into the GOT, we may need a round-trip to a PLT in the |
2787 | executable for calls, a loss in performance. Still, losing a | |
2788 | reloc is a win in size and at least in start-up time. | |
2789 | ||
915e5146 HPN |
2790 | Note that this function is called before symbols are forced local by |
2791 | version scripts. The differing cases are handled by | |
2792 | elf_cris_hide_symbol. */ | |
2793 | ||
b34976b6 | 2794 | static bfd_boolean |
2c3fc389 | 2795 | elf_cris_try_fold_plt_to_got (struct elf_cris_link_hash_entry *h, void * p) |
915e5146 HPN |
2796 | { |
2797 | struct bfd_link_info *info = (struct bfd_link_info *) p; | |
2798 | ||
2799 | /* If there are no GOT references for this symbol, we can't fold any | |
2800 | other reference so there's nothing to do. Likewise if there are no | |
2801 | PLT references; GOTPLT references included. */ | |
2802 | if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0) | |
b34976b6 | 2803 | return TRUE; |
915e5146 HPN |
2804 | |
2805 | /* GOTPLT relocs are supposed to be included into the PLT refcount. */ | |
2806 | BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount); | |
2807 | ||
2808 | if (h->gotplt_refcount == h->root.plt.refcount) | |
2809 | { | |
4d96d128 | 2810 | /* The only PLT references are GOTPLT references, and there are GOT |
915e5146 HPN |
2811 | references. Convert PLT to GOT references. */ |
2812 | if (! elf_cris_adjust_gotplt_to_got (h, info)) | |
b34976b6 | 2813 | return FALSE; |
915e5146 HPN |
2814 | |
2815 | /* Clear the PLT references, so no PLT will be created. */ | |
2816 | h->root.plt.offset = (bfd_vma) -1; | |
2817 | } | |
2818 | ||
b34976b6 | 2819 | return TRUE; |
915e5146 HPN |
2820 | } |
2821 | ||
2822 | /* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc | |
2823 | to use a GOT entry (and create one) rather than requiring a GOTPLT | |
2824 | entry. */ | |
2825 | ||
2826 | static void | |
2c3fc389 NC |
2827 | elf_cris_hide_symbol (struct bfd_link_info *info, |
2828 | struct elf_link_hash_entry *h, | |
2829 | bfd_boolean force_local) | |
915e5146 HPN |
2830 | { |
2831 | elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info); | |
2832 | ||
e5094212 | 2833 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
915e5146 HPN |
2834 | } |
2835 | ||
2836 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
2837 | regular object. The current definition is in some section of the | |
2838 | dynamic object, but we're not including those sections. We have to | |
2839 | change the definition to something the rest of the link can | |
2840 | understand. */ | |
2841 | ||
b34976b6 | 2842 | static bfd_boolean |
4dfe6ac6 NC |
2843 | elf_cris_adjust_dynamic_symbol (struct bfd_link_info *info, |
2844 | struct elf_link_hash_entry *h) | |
915e5146 | 2845 | { |
4dfe6ac6 | 2846 | struct elf_cris_link_hash_table * htab; |
915e5146 HPN |
2847 | bfd *dynobj; |
2848 | asection *s; | |
1fbd05e1 | 2849 | asection *srel; |
bac23f82 | 2850 | bfd_size_type plt_entry_size; |
915e5146 | 2851 | |
4dfe6ac6 NC |
2852 | htab = elf_cris_hash_table (info); |
2853 | if (htab == NULL) | |
2854 | return FALSE; | |
2855 | ||
ce558b89 | 2856 | dynobj = htab->root.dynobj; |
915e5146 HPN |
2857 | |
2858 | /* Make sure we know what is going on here. */ | |
2859 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 2860 | && (h->needs_plt |
f6e332e6 | 2861 | || h->u.weakdef != NULL |
f5385ebf AM |
2862 | || (h->def_dynamic |
2863 | && h->ref_regular | |
2864 | && !h->def_regular))); | |
915e5146 | 2865 | |
bac23f82 HPN |
2866 | plt_entry_size |
2867 | = (bfd_get_mach (dynobj) == bfd_mach_cris_v32 | |
2868 | ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE); | |
2869 | ||
915e5146 HPN |
2870 | /* If this is a function, put it in the procedure linkage table. We |
2871 | will fill in the contents of the procedure linkage table later, | |
2872 | when we know the address of the .got section. */ | |
2873 | if (h->type == STT_FUNC | |
f5385ebf | 2874 | || h->needs_plt) |
915e5146 | 2875 | { |
6849c52f HPN |
2876 | /* If we link a program (not a DSO), we'll get rid of unnecessary |
2877 | PLT entries; we point to the actual symbols -- even for pic | |
2878 | relocs, because a program built with -fpic should have the same | |
2879 | result as one built without -fpic, specifically considering weak | |
2880 | symbols. | |
2881 | FIXME: m68k and i386 differ here, for unclear reasons. */ | |
0e1862bb | 2882 | if (! bfd_link_pic (info) |
f5385ebf | 2883 | && !h->def_dynamic) |
915e5146 HPN |
2884 | { |
2885 | /* This case can occur if we saw a PLT reloc in an input file, | |
6849c52f HPN |
2886 | but the symbol was not defined by a dynamic object. In such |
2887 | a case, we don't actually need to build a procedure linkage | |
2888 | table, and we can just do an absolute or PC reloc instead, or | |
4d96d128 | 2889 | change a .got.plt index to a .got index for GOTPLT relocs. */ |
f5385ebf AM |
2890 | BFD_ASSERT (h->needs_plt); |
2891 | h->needs_plt = 0; | |
915e5146 | 2892 | h->plt.offset = (bfd_vma) -1; |
915e5146 HPN |
2893 | return |
2894 | elf_cris_adjust_gotplt_to_got ((struct | |
2895 | elf_cris_link_hash_entry *) h, | |
2896 | info); | |
2897 | } | |
2898 | ||
e4a2175c HPN |
2899 | /* If we had a R_CRIS_GLOB_DAT that didn't have to point to a PLT; |
2900 | where a pointer-equivalent symbol was unimportant (i.e. more | |
2901 | like R_CRIS_JUMP_SLOT after symbol evaluation) we could get rid | |
2902 | of the PLT. We can't for the executable, because the GOT | |
2903 | entries will point to the PLT there (and be constant). */ | |
0e1862bb | 2904 | if (bfd_link_pic (info) |
e4a2175c HPN |
2905 | && !elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry*) |
2906 | h, info)) | |
b34976b6 | 2907 | return FALSE; |
915e5146 HPN |
2908 | |
2909 | /* GC or folding may have rendered this entry unused. */ | |
2910 | if (h->plt.refcount <= 0) | |
2911 | { | |
f5385ebf | 2912 | h->needs_plt = 0; |
915e5146 | 2913 | h->plt.offset = (bfd_vma) -1; |
b34976b6 | 2914 | return TRUE; |
915e5146 HPN |
2915 | } |
2916 | ||
2917 | /* Make sure this symbol is output as a dynamic symbol. */ | |
2918 | if (h->dynindx == -1) | |
2919 | { | |
c152c796 | 2920 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2921 | return FALSE; |
915e5146 HPN |
2922 | } |
2923 | ||
ce558b89 | 2924 | s = htab->root.splt; |
915e5146 HPN |
2925 | BFD_ASSERT (s != NULL); |
2926 | ||
2927 | /* If this is the first .plt entry, make room for the special | |
2928 | first entry. */ | |
eea6121a | 2929 | if (s->size == 0) |
bac23f82 | 2930 | s->size += plt_entry_size; |
915e5146 HPN |
2931 | |
2932 | /* If this symbol is not defined in a regular file, and we are | |
2933 | not generating a shared library, then set the symbol to this | |
6849c52f | 2934 | location in the .plt. */ |
0e1862bb | 2935 | if (!bfd_link_pic (info) |
f5385ebf | 2936 | && !h->def_regular) |
915e5146 HPN |
2937 | { |
2938 | h->root.u.def.section = s; | |
eea6121a | 2939 | h->root.u.def.value = s->size; |
915e5146 HPN |
2940 | } |
2941 | ||
4d96d128 HPN |
2942 | /* If there's already a GOT entry, use that, not a .got.plt. A |
2943 | GOT field still has a reference count when we get here; it's | |
e4a2175c HPN |
2944 | not yet changed to an offset. We can't do this for an |
2945 | executable, because then the reloc associated with the PLT | |
2946 | would get a non-PLT reloc pointing to the PLT. FIXME: Move | |
2947 | this to elf_cris_try_fold_plt_to_got. */ | |
0e1862bb | 2948 | if (bfd_link_pic (info) && h->got.refcount > 0) |
915e5146 HPN |
2949 | { |
2950 | h->got.refcount += h->plt.refcount; | |
2951 | ||
2952 | /* Mark the PLT offset to use the GOT entry by setting the low | |
2953 | bit in the plt offset; it is always a multiple of | |
bac23f82 HPN |
2954 | plt_entry_size (which is at least a multiple of 2). */ |
2955 | BFD_ASSERT ((s->size % plt_entry_size) == 0); | |
915e5146 HPN |
2956 | |
2957 | /* Change the PLT refcount to an offset. */ | |
eea6121a | 2958 | h->plt.offset = s->size; |
915e5146 HPN |
2959 | |
2960 | /* By not setting gotplt_offset (i.e. it remains at 0), we signal | |
2961 | that the got entry should be used instead. */ | |
2962 | BFD_ASSERT (((struct elf_cris_link_hash_entry *) | |
2963 | h)->gotplt_offset == 0); | |
2964 | ||
2965 | /* Make room for this entry. */ | |
bac23f82 | 2966 | s->size += plt_entry_size; |
915e5146 | 2967 | |
b34976b6 | 2968 | return TRUE; |
915e5146 HPN |
2969 | } |
2970 | ||
2971 | /* No GOT reference for this symbol; prepare for an ordinary PLT. */ | |
eea6121a | 2972 | h->plt.offset = s->size; |
915e5146 HPN |
2973 | |
2974 | /* Make room for this entry. */ | |
bac23f82 | 2975 | s->size += plt_entry_size; |
915e5146 HPN |
2976 | |
2977 | /* We also need to make an entry in the .got.plt section, which | |
2978 | will be placed in the .got section by the linker script. */ | |
2979 | ((struct elf_cris_link_hash_entry *) h)->gotplt_offset | |
4dfe6ac6 NC |
2980 | = htab->next_gotplt_entry; |
2981 | htab->next_gotplt_entry += 4; | |
915e5146 | 2982 | |
ce558b89 | 2983 | s = htab->root.sgotplt; |
915e5146 | 2984 | BFD_ASSERT (s != NULL); |
eea6121a | 2985 | s->size += 4; |
915e5146 HPN |
2986 | |
2987 | /* We also need to make an entry in the .rela.plt section. */ | |
2988 | ||
ce558b89 | 2989 | s = htab->root.srelplt; |
915e5146 | 2990 | BFD_ASSERT (s != NULL); |
eea6121a | 2991 | s->size += sizeof (Elf32_External_Rela); |
915e5146 | 2992 | |
b34976b6 | 2993 | return TRUE; |
915e5146 HPN |
2994 | } |
2995 | ||
2996 | /* Reinitialize the plt offset now that it is not used as a reference | |
2997 | count any more. */ | |
2998 | h->plt.offset = (bfd_vma) -1; | |
2999 | ||
3000 | /* If this is a weak symbol, and there is a real definition, the | |
3001 | processor independent code will have arranged for us to see the | |
3002 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 3003 | if (h->u.weakdef != NULL) |
915e5146 | 3004 | { |
f6e332e6 AM |
3005 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
3006 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
3007 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
3008 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 3009 | return TRUE; |
915e5146 HPN |
3010 | } |
3011 | ||
3012 | /* This is a reference to a symbol defined by a dynamic object which | |
3013 | is not a function. */ | |
3014 | ||
3015 | /* If we are creating a shared library, we must presume that the | |
3016 | only references to the symbol are via the global offset table. | |
3017 | For such cases we need not do anything here; the relocations will | |
3018 | be handled correctly by relocate_section. */ | |
0e1862bb | 3019 | if (bfd_link_pic (info)) |
b34976b6 | 3020 | return TRUE; |
915e5146 HPN |
3021 | |
3022 | /* If there are no references to this symbol that do not use the | |
3023 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 3024 | if (!h->non_got_ref) |
b34976b6 | 3025 | return TRUE; |
915e5146 HPN |
3026 | |
3027 | /* We must allocate the symbol in our .dynbss section, which will | |
3028 | become part of the .bss section of the executable. There will be | |
3029 | an entry for this symbol in the .dynsym section. The dynamic | |
3030 | object will contain position independent code, so all references | |
3031 | from the dynamic object to this symbol will go through the global | |
3032 | offset table. The dynamic linker will use the .dynsym entry to | |
3033 | determine the address it must put in the global offset table, so | |
3034 | both the dynamic object and the regular object will refer to the | |
3035 | same memory location for the variable. */ | |
3036 | ||
915e5146 HPN |
3037 | /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to |
3038 | copy the initial value out of the dynamic object and into the | |
3039 | runtime process image. We need to remember the offset into the | |
3040 | .rela.bss section we are going to use. */ | |
1fbd05e1 HPN |
3041 | |
3042 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) | |
3043 | { | |
3044 | s = htab->root.sdynrelro; | |
3045 | srel = htab->root.sreldynrelro; | |
3046 | } | |
3047 | else | |
3048 | { | |
3049 | s = htab->root.sdynbss; | |
3050 | srel = htab->root.srelbss; | |
3051 | } | |
1d7e9d18 | 3052 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
915e5146 | 3053 | { |
915e5146 | 3054 | BFD_ASSERT (srel != NULL); |
eea6121a | 3055 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 3056 | h->needs_copy = 1; |
915e5146 HPN |
3057 | } |
3058 | ||
1fbd05e1 HPN |
3059 | BFD_ASSERT (s != NULL); |
3060 | ||
6cabe1ea | 3061 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
915e5146 HPN |
3062 | } |
3063 | ||
237bc7f0 HPN |
3064 | /* Adjust our "subclass" elements for an indirect symbol. */ |
3065 | ||
3066 | static void | |
3067 | elf_cris_copy_indirect_symbol (struct bfd_link_info *info, | |
3068 | struct elf_link_hash_entry *dir, | |
3069 | struct elf_link_hash_entry *ind) | |
3070 | { | |
3071 | struct elf_cris_link_hash_entry *edir, *eind; | |
3072 | ||
3073 | edir = (struct elf_cris_link_hash_entry *) dir; | |
3074 | eind = (struct elf_cris_link_hash_entry *) ind; | |
3075 | ||
867ea5fd HPN |
3076 | /* Only indirect symbols are replaced; we're not interested in |
3077 | updating any of EIND's fields for other symbols. */ | |
3078 | if (eind->root.root.type != bfd_link_hash_indirect) | |
451ffe63 HPN |
3079 | { |
3080 | /* Still, we need to copy flags for e.g. weak definitions. */ | |
3081 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
3082 | return; | |
3083 | } | |
867ea5fd | 3084 | |
237bc7f0 HPN |
3085 | BFD_ASSERT (edir->gotplt_offset == 0 || eind->gotplt_offset == 0); |
3086 | ||
3087 | #define XMOVOPZ(F, OP, Z) edir->F OP eind->F; eind->F = Z | |
3088 | #define XMOVE(F) XMOVOPZ (F, +=, 0) | |
bfbff9eb HPN |
3089 | if (eind->pcrel_relocs_copied != NULL) |
3090 | { | |
3091 | if (edir->pcrel_relocs_copied != NULL) | |
3092 | { | |
3093 | struct elf_cris_pcrel_relocs_copied **pp; | |
3094 | struct elf_cris_pcrel_relocs_copied *p; | |
3095 | ||
3096 | /* Add reloc counts against the indirect sym to the direct sym | |
3097 | list. Merge any entries against the same section. */ | |
3098 | for (pp = &eind->pcrel_relocs_copied; *pp != NULL;) | |
3099 | { | |
3100 | struct elf_cris_pcrel_relocs_copied *q; | |
3101 | p = *pp; | |
3102 | for (q = edir->pcrel_relocs_copied; q != NULL; q = q->next) | |
3103 | if (q->section == p->section) | |
3104 | { | |
3105 | q->count += p->count; | |
3106 | *pp = p->next; | |
3107 | break; | |
3108 | } | |
3109 | if (q == NULL) | |
3110 | pp = &p->next; | |
3111 | } | |
3112 | *pp = edir->pcrel_relocs_copied; | |
3113 | } | |
3114 | XMOVOPZ (pcrel_relocs_copied, =, NULL); | |
3115 | } | |
237bc7f0 HPN |
3116 | XMOVE (gotplt_refcount); |
3117 | XMOVE (gotplt_offset); | |
3118 | XMOVE (reg_got_refcount); | |
3119 | XMOVE (tprel_refcount); | |
3120 | XMOVE (dtp_refcount); | |
3121 | #undef XMOVE | |
3122 | #undef XMOVOPZ | |
3123 | ||
3124 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
3125 | } | |
3126 | ||
915e5146 | 3127 | /* Look through the relocs for a section during the first phase. */ |
a7c10850 | 3128 | |
b34976b6 | 3129 | static bfd_boolean |
4dfe6ac6 NC |
3130 | cris_elf_check_relocs (bfd *abfd, |
3131 | struct bfd_link_info *info, | |
3132 | asection *sec, | |
3133 | const Elf_Internal_Rela *relocs) | |
06c15ad7 | 3134 | { |
4dfe6ac6 | 3135 | struct elf_cris_link_hash_table * htab; |
915e5146 | 3136 | bfd *dynobj; |
06c15ad7 | 3137 | Elf_Internal_Shdr *symtab_hdr; |
5582a088 | 3138 | struct elf_link_hash_entry **sym_hashes; |
915e5146 | 3139 | bfd_signed_vma *local_got_refcounts; |
06c15ad7 HPN |
3140 | const Elf_Internal_Rela *rel; |
3141 | const Elf_Internal_Rela *rel_end; | |
915e5146 HPN |
3142 | asection *sgot; |
3143 | asection *srelgot; | |
3144 | asection *sreloc; | |
a7c10850 | 3145 | |
0e1862bb | 3146 | if (bfd_link_relocatable (info)) |
b34976b6 | 3147 | return TRUE; |
a7c10850 | 3148 | |
4dfe6ac6 NC |
3149 | htab = elf_cris_hash_table (info); |
3150 | if (htab == NULL) | |
3151 | return FALSE; | |
3152 | ||
915e5146 | 3153 | dynobj = elf_hash_table (info)->dynobj; |
06c15ad7 HPN |
3154 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
3155 | sym_hashes = elf_sym_hashes (abfd); | |
915e5146 HPN |
3156 | local_got_refcounts = elf_local_got_refcounts (abfd); |
3157 | ||
3158 | sgot = NULL; | |
3159 | srelgot = NULL; | |
3160 | sreloc = NULL; | |
3161 | ||
06c15ad7 HPN |
3162 | rel_end = relocs + sec->reloc_count; |
3163 | for (rel = relocs; rel < rel_end; rel++) | |
3164 | { | |
3165 | struct elf_link_hash_entry *h; | |
3166 | unsigned long r_symndx; | |
915e5146 | 3167 | enum elf_cris_reloc_type r_type; |
100382c7 HPN |
3168 | bfd_signed_vma got_element_size = 4; |
3169 | unsigned long r_symndx_lgot = INT_MAX; | |
a7c10850 | 3170 | |
06c15ad7 HPN |
3171 | r_symndx = ELF32_R_SYM (rel->r_info); |
3172 | if (r_symndx < symtab_hdr->sh_info) | |
100382c7 HPN |
3173 | { |
3174 | h = NULL; | |
3175 | r_symndx_lgot = LGOT_REG_NDX (r_symndx); | |
3176 | } | |
06c15ad7 | 3177 | else |
973a3492 L |
3178 | { |
3179 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3180 | while (h->root.type == bfd_link_hash_indirect | |
3181 | || h->root.type == bfd_link_hash_warning) | |
3182 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
81fbe831 AM |
3183 | |
3184 | /* PR15323, ref flags aren't set for references in the same | |
3185 | object. */ | |
bc4e12de | 3186 | h->root.non_ir_ref_regular = 1; |
973a3492 | 3187 | } |
a7c10850 | 3188 | |
915e5146 HPN |
3189 | r_type = ELF32_R_TYPE (rel->r_info); |
3190 | ||
3191 | /* Some relocs require linker-created sections; we need to hang them | |
3192 | on the first input bfd we found that contained dynamic relocs. */ | |
3193 | switch (r_type) | |
3194 | { | |
100382c7 | 3195 | case R_CRIS_32_DTPREL: |
6718f446 HPN |
3196 | if ((sec->flags & SEC_ALLOC) == 0) |
3197 | /* This'd be a .dtpreld entry in e.g. debug info. We have | |
3198 | several different switch statements below, but none of | |
3199 | that is needed; we need no preparations for resolving | |
3200 | R_CRIS_32_DTPREL into a non-allocated section (debug | |
3201 | info), so let's just move on to the next | |
3202 | relocation. */ | |
3203 | continue; | |
3204 | /* Fall through. */ | |
3205 | case R_CRIS_16_DTPREL: | |
100382c7 HPN |
3206 | /* The first .got.plt entry is right after the R_CRIS_DTPMOD |
3207 | entry at index 3. */ | |
4dfe6ac6 NC |
3208 | if (htab->dtpmod_refcount == 0) |
3209 | htab->next_gotplt_entry += 8; | |
3210 | ||
3211 | htab->dtpmod_refcount++; | |
100382c7 HPN |
3212 | /* Fall through. */ |
3213 | ||
75f500d7 | 3214 | case R_CRIS_32_IE: |
100382c7 HPN |
3215 | case R_CRIS_32_GD: |
3216 | case R_CRIS_16_GOT_GD: | |
3217 | case R_CRIS_32_GOT_GD: | |
3218 | case R_CRIS_32_GOT_TPREL: | |
3219 | case R_CRIS_16_GOT_TPREL: | |
915e5146 HPN |
3220 | case R_CRIS_16_GOT: |
3221 | case R_CRIS_32_GOT: | |
3222 | case R_CRIS_32_GOTREL: | |
3223 | case R_CRIS_32_PLT_GOTREL: | |
3224 | case R_CRIS_32_PLT_PCREL: | |
3225 | case R_CRIS_16_GOTPLT: | |
3226 | case R_CRIS_32_GOTPLT: | |
3227 | if (dynobj == NULL) | |
3228 | { | |
3229 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
3230 | ||
bac23f82 HPN |
3231 | /* We could handle this if we can get a handle on the |
3232 | output bfd in elf_cris_adjust_dynamic_symbol. Failing | |
3233 | that, we must insist on dynobj being a specific mach. */ | |
3234 | if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32) | |
3235 | { | |
4eca0228 | 3236 | _bfd_error_handler |
695344c0 | 3237 | /* xgettext:c-format */ |
d42c267e | 3238 | (_("%B, section %A:\n v10/v32 compatible object" |
bac23f82 HPN |
3239 | " must not contain a PIC relocation"), |
3240 | abfd, sec); | |
3241 | return FALSE; | |
3242 | } | |
6dd38d79 | 3243 | } |
bac23f82 | 3244 | |
6dd38d79 HPN |
3245 | if (sgot == NULL) |
3246 | { | |
3247 | /* We may have a dynobj but no .got section, if machine- | |
3248 | independent parts of the linker found a reason to create | |
3249 | a dynobj. We want to create the .got section now, so we | |
3250 | can assume it's always present whenever there's a dynobj. | |
3251 | It's ok to call this function more than once. */ | |
915e5146 | 3252 | if (!_bfd_elf_create_got_section (dynobj, info)) |
b34976b6 | 3253 | return FALSE; |
100382c7 | 3254 | |
ce558b89 AM |
3255 | sgot = elf_hash_table (info)->sgot; |
3256 | srelgot = elf_hash_table (info)->srelgot; | |
6dd38d79 | 3257 | } |
100382c7 HPN |
3258 | |
3259 | if (local_got_refcounts == NULL) | |
3260 | { | |
3261 | bfd_size_type amt; | |
3262 | ||
3263 | /* We use index local_got_refcounts[-1] to count all | |
3264 | GOT-relative relocations that do not have explicit | |
3265 | GOT entries. */ | |
3266 | amt = LGOT_ALLOC_NELTS_FOR (symtab_hdr->sh_info) + 1; | |
3267 | amt *= sizeof (bfd_signed_vma); | |
3268 | local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt)); | |
3269 | if (local_got_refcounts == NULL) | |
3270 | return FALSE; | |
3271 | ||
3272 | local_got_refcounts++; | |
3273 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
3274 | } | |
915e5146 HPN |
3275 | break; |
3276 | ||
3277 | default: | |
3278 | break; | |
3279 | } | |
3280 | ||
100382c7 HPN |
3281 | /* Warn and error for invalid input. */ |
3282 | switch (r_type) | |
3283 | { | |
75f500d7 | 3284 | case R_CRIS_32_IE: |
100382c7 HPN |
3285 | case R_CRIS_32_TPREL: |
3286 | case R_CRIS_16_TPREL: | |
3287 | case R_CRIS_32_GD: | |
0e1862bb | 3288 | if (bfd_link_pic (info)) |
915e5146 | 3289 | { |
4eca0228 | 3290 | _bfd_error_handler |
695344c0 | 3291 | /* xgettext:c-format */ |
100382c7 HPN |
3292 | (_("%B, section %A:\n relocation %s not valid" |
3293 | " in a shared object;" | |
3294 | " typically an option mixup, recompile with -fPIC"), | |
3295 | abfd, | |
3296 | sec, | |
3297 | cris_elf_howto_table[r_type].name); | |
3298 | /* Don't return FALSE here; we want messages for all of | |
3299 | these and the error behavior is ungraceful | |
3300 | anyway. */ | |
3301 | } | |
3302 | default: | |
3303 | break; | |
3304 | } | |
915e5146 | 3305 | |
100382c7 HPN |
3306 | switch (r_type) |
3307 | { | |
3308 | case R_CRIS_32_GD: | |
3309 | case R_CRIS_16_GOT_GD: | |
3310 | case R_CRIS_32_GOT_GD: | |
3311 | /* These are requests for tls_index entries, run-time R_CRIS_DTP. */ | |
3312 | got_element_size = 8; | |
3313 | r_symndx_lgot = LGOT_DTP_NDX (r_symndx); | |
3314 | break; | |
915e5146 | 3315 | |
100382c7 HPN |
3316 | case R_CRIS_16_DTPREL: |
3317 | case R_CRIS_32_DTPREL: | |
3318 | /* These two just request for the constant-index | |
3319 | module-local tls_index-sized GOT entry, which we add | |
3320 | elsewhere. */ | |
915e5146 HPN |
3321 | break; |
3322 | ||
75f500d7 | 3323 | case R_CRIS_32_IE: |
100382c7 HPN |
3324 | case R_CRIS_32_GOT_TPREL: |
3325 | case R_CRIS_16_GOT_TPREL: | |
3326 | r_symndx_lgot = LGOT_TPREL_NDX (r_symndx); | |
3327 | ||
75f500d7 | 3328 | /* Those relocs also require that a DSO is of type |
100382c7 HPN |
3329 | Initial Exec. Like other targets, we don't reset this |
3330 | flag even if the relocs are GC:ed away. */ | |
0e1862bb | 3331 | if (bfd_link_pic (info)) |
100382c7 HPN |
3332 | info->flags |= DF_STATIC_TLS; |
3333 | break; | |
3334 | ||
3335 | /* Let's list the other assembler-generated TLS-relocs too, | |
3336 | just to show that they're not forgotten. */ | |
3337 | case R_CRIS_16_TPREL: | |
3338 | case R_CRIS_32_TPREL: | |
915e5146 HPN |
3339 | default: |
3340 | break; | |
3341 | } | |
3342 | ||
4d96d128 | 3343 | switch (r_type) |
06c15ad7 | 3344 | { |
915e5146 HPN |
3345 | case R_CRIS_16_GOTPLT: |
3346 | case R_CRIS_32_GOTPLT: | |
3347 | /* Mark that we need a GOT entry if the PLT entry (and its GOT | |
3348 | entry) is eliminated. We can only do this for a non-local | |
3349 | symbol. */ | |
3350 | if (h != NULL) | |
3351 | { | |
100382c7 | 3352 | elf_cris_hash_entry (h)->gotplt_refcount++; |
915e5146 HPN |
3353 | goto handle_gotplt_reloc; |
3354 | } | |
3355 | /* If h is NULL then this is a local symbol, and we must make a | |
3356 | GOT entry for it, so handle it like a GOT reloc. */ | |
3357 | /* Fall through. */ | |
3358 | ||
75f500d7 | 3359 | case R_CRIS_32_IE: |
100382c7 HPN |
3360 | case R_CRIS_32_GD: |
3361 | case R_CRIS_16_GOT_GD: | |
3362 | case R_CRIS_32_GOT_GD: | |
3363 | case R_CRIS_32_GOT_TPREL: | |
3364 | case R_CRIS_16_GOT_TPREL: | |
915e5146 HPN |
3365 | case R_CRIS_16_GOT: |
3366 | case R_CRIS_32_GOT: | |
3367 | /* This symbol requires a global offset table entry. */ | |
915e5146 HPN |
3368 | if (h != NULL) |
3369 | { | |
51b64d56 | 3370 | if (h->got.refcount == 0) |
915e5146 | 3371 | { |
915e5146 HPN |
3372 | /* Make sure this symbol is output as a dynamic symbol. */ |
3373 | if (h->dynindx == -1) | |
3374 | { | |
c152c796 | 3375 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 3376 | return FALSE; |
915e5146 | 3377 | } |
915e5146 | 3378 | } |
100382c7 HPN |
3379 | |
3380 | /* Update the sum of reloc counts for this symbol. */ | |
51b64d56 | 3381 | h->got.refcount++; |
100382c7 HPN |
3382 | |
3383 | switch (r_type) | |
3384 | { | |
3385 | case R_CRIS_16_GOT: | |
3386 | case R_CRIS_32_GOT: | |
3387 | if (elf_cris_hash_entry (h)->reg_got_refcount == 0) | |
3388 | { | |
3389 | /* Allocate space in the .got section. */ | |
3390 | sgot->size += got_element_size; | |
3391 | /* Allocate relocation space. */ | |
3392 | srelgot->size += sizeof (Elf32_External_Rela); | |
3393 | } | |
3394 | elf_cris_hash_entry (h)->reg_got_refcount++; | |
3395 | break; | |
3396 | ||
3397 | case R_CRIS_32_GD: | |
3398 | case R_CRIS_16_GOT_GD: | |
3399 | case R_CRIS_32_GOT_GD: | |
3400 | if (elf_cris_hash_entry (h)->dtp_refcount == 0) | |
3401 | { | |
3402 | /* Allocate space in the .got section. */ | |
3403 | sgot->size += got_element_size; | |
3404 | /* Allocate relocation space. */ | |
3405 | srelgot->size += sizeof (Elf32_External_Rela); | |
3406 | } | |
3407 | elf_cris_hash_entry (h)->dtp_refcount++; | |
3408 | break; | |
3409 | ||
75f500d7 | 3410 | case R_CRIS_32_IE: |
100382c7 HPN |
3411 | case R_CRIS_32_GOT_TPREL: |
3412 | case R_CRIS_16_GOT_TPREL: | |
3413 | if (elf_cris_hash_entry (h)->tprel_refcount == 0) | |
3414 | { | |
3415 | /* Allocate space in the .got section. */ | |
3416 | sgot->size += got_element_size; | |
3417 | /* Allocate relocation space. */ | |
3418 | srelgot->size += sizeof (Elf32_External_Rela); | |
3419 | } | |
3420 | elf_cris_hash_entry (h)->tprel_refcount++; | |
3421 | break; | |
3422 | ||
3423 | default: | |
3424 | BFD_FAIL (); | |
3425 | break; | |
3426 | } | |
915e5146 HPN |
3427 | } |
3428 | else | |
3429 | { | |
3430 | /* This is a global offset table entry for a local symbol. */ | |
100382c7 | 3431 | if (local_got_refcounts[r_symndx_lgot] == 0) |
915e5146 | 3432 | { |
100382c7 | 3433 | sgot->size += got_element_size; |
0e1862bb | 3434 | if (bfd_link_pic (info)) |
915e5146 | 3435 | { |
100382c7 HPN |
3436 | /* If we are generating a shared object, we need |
3437 | to output a R_CRIS_RELATIVE reloc so that the | |
3438 | dynamic linker can adjust this GOT entry. | |
3439 | Similarly for non-regular got entries. */ | |
eea6121a | 3440 | srelgot->size += sizeof (Elf32_External_Rela); |
915e5146 HPN |
3441 | } |
3442 | } | |
100382c7 HPN |
3443 | /* Update the reloc-specific count. */ |
3444 | local_got_refcounts[r_symndx_lgot]++; | |
3445 | ||
3446 | /* This one is the sum of all the others. */ | |
51b64d56 | 3447 | local_got_refcounts[r_symndx]++; |
915e5146 HPN |
3448 | } |
3449 | break; | |
3450 | ||
100382c7 HPN |
3451 | case R_CRIS_16_DTPREL: |
3452 | case R_CRIS_32_DTPREL: | |
915e5146 HPN |
3453 | case R_CRIS_32_GOTREL: |
3454 | /* This reference requires a global offset table. | |
3455 | FIXME: The actual refcount isn't used currently; the .got | |
3456 | section can't be removed if there were any references in the | |
3457 | input. */ | |
3458 | local_got_refcounts[-1]++; | |
3459 | break; | |
3460 | ||
3461 | handle_gotplt_reloc: | |
3462 | ||
3463 | case R_CRIS_32_PLT_GOTREL: | |
3464 | /* This reference requires a global offset table. */ | |
3465 | local_got_refcounts[-1]++; | |
3466 | /* Fall through. */ | |
3467 | ||
3468 | case R_CRIS_32_PLT_PCREL: | |
3469 | /* This symbol requires a procedure linkage table entry. We | |
3470 | actually build the entry in adjust_dynamic_symbol, | |
3471 | because this might be a case of linking PIC code which is | |
3472 | never referenced by a dynamic object, in which case we | |
3473 | don't need to generate a procedure linkage table entry | |
3474 | after all. */ | |
3475 | ||
ada1953e HPN |
3476 | /* Beware: if we'd check for visibility of the symbol here |
3477 | (and not marking the need for a PLT when non-visible), we'd | |
3478 | get into trouble with keeping handling consistent with | |
3479 | regards to relocs found before definition and GOTPLT | |
3480 | handling. Eliminable PLT entries will be dealt with later | |
3481 | anyway. */ | |
3482 | if (h == NULL) | |
915e5146 HPN |
3483 | continue; |
3484 | ||
f5385ebf | 3485 | h->needs_plt = 1; |
086554e8 HPN |
3486 | |
3487 | /* If the symbol is forced local, the refcount is unavailable. */ | |
3488 | if (h->plt.refcount != -1) | |
3489 | h->plt.refcount++; | |
915e5146 HPN |
3490 | break; |
3491 | ||
3492 | case R_CRIS_8: | |
3493 | case R_CRIS_16: | |
3494 | case R_CRIS_32: | |
3495 | /* Let's help debug shared library creation. Any of these | |
0d08de41 HPN |
3496 | relocs *can* be used in shared libs, but pages containing |
3497 | them cannot be shared, so they're not appropriate for | |
3498 | common use. Don't warn for sections we don't care about, | |
3499 | such as debug sections or non-constant sections. We | |
3500 | can't help tables of (global) function pointers, for | |
3501 | example, though they must be emitted in a (writable) data | |
3502 | section to avoid having impure text sections. */ | |
0e1862bb | 3503 | if (bfd_link_pic (info) |
915e5146 HPN |
3504 | && (sec->flags & SEC_ALLOC) != 0 |
3505 | && (sec->flags & SEC_READONLY) != 0) | |
3506 | { | |
3507 | /* FIXME: How do we make this optionally a warning only? */ | |
4eca0228 | 3508 | _bfd_error_handler |
695344c0 | 3509 | /* xgettext:c-format */ |
bac23f82 HPN |
3510 | (_("%B, section %A:\n relocation %s should not" |
3511 | " be used in a shared object; recompile with -fPIC"), | |
d003868e AM |
3512 | abfd, |
3513 | sec, | |
8f615d07 | 3514 | cris_elf_howto_table[r_type].name); |
915e5146 | 3515 | } |
28f68c73 HPN |
3516 | |
3517 | /* We don't need to handle relocs into sections not going into | |
3518 | the "real" output. */ | |
3519 | if ((sec->flags & SEC_ALLOC) == 0) | |
3520 | break; | |
3521 | ||
0d08de41 HPN |
3522 | if (h != NULL) |
3523 | { | |
3524 | h->non_got_ref = 1; | |
100382c7 | 3525 | |
0d08de41 HPN |
3526 | /* Make sure a plt entry is created for this symbol if it |
3527 | turns out to be a function defined by a dynamic object. */ | |
3528 | if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
3529 | h->plt.refcount++; | |
3530 | } | |
3531 | ||
3532 | /* If we are creating a shared library and this is not a local | |
3533 | symbol, we need to copy the reloc into the shared library. | |
3534 | However when linking with -Bsymbolic and this is a global | |
3535 | symbol which is defined in an object we are including in the | |
3536 | link (i.e., DEF_REGULAR is set), then we can resolve the | |
3537 | reloc directly. At this point we have not seen all the input | |
3538 | files, so it is possible that DEF_REGULAR is not set now but | |
3539 | will be set later (it is never cleared). In case of a weak | |
3540 | definition, DEF_REGULAR may be cleared later by a strong | |
3541 | definition in a shared library. We account for that | |
3542 | possibility below by storing information in the relocs_copied | |
3543 | field of the hash table entry. A similar situation occurs | |
3544 | when creating shared libraries and symbol visibility changes | |
3545 | render the symbol local. */ | |
3546 | ||
3547 | /* No need to do anything if we're not creating a shared object. */ | |
e01c16a8 L |
3548 | if (! bfd_link_pic (info) |
3549 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
0d08de41 HPN |
3550 | break; |
3551 | ||
0d08de41 HPN |
3552 | /* We may need to create a reloc section in the dynobj and made room |
3553 | for this reloc. */ | |
3554 | if (sreloc == NULL) | |
3555 | { | |
3556 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
3557 | (sec, dynobj, 2, abfd, /*rela?*/ TRUE); | |
3558 | ||
3559 | if (sreloc == NULL) | |
3560 | return FALSE; | |
3561 | } | |
3562 | ||
3563 | if (sec->flags & SEC_READONLY) | |
3564 | info->flags |= DF_TEXTREL; | |
3565 | ||
3566 | sreloc->size += sizeof (Elf32_External_Rela); | |
3567 | break; | |
915e5146 HPN |
3568 | |
3569 | case R_CRIS_8_PCREL: | |
3570 | case R_CRIS_16_PCREL: | |
3571 | case R_CRIS_32_PCREL: | |
3572 | if (h != NULL) | |
3573 | { | |
f5385ebf | 3574 | h->non_got_ref = 1; |
915e5146 HPN |
3575 | |
3576 | /* Make sure a plt entry is created for this symbol if it | |
3577 | turns out to be a function defined by a dynamic object. */ | |
0a4787a0 HPN |
3578 | if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) |
3579 | h->plt.refcount++; | |
915e5146 HPN |
3580 | } |
3581 | ||
3582 | /* If we are creating a shared library and this is not a local | |
3583 | symbol, we need to copy the reloc into the shared library. | |
3584 | However when linking with -Bsymbolic and this is a global | |
3585 | symbol which is defined in an object we are including in the | |
3586 | link (i.e., DEF_REGULAR is set), then we can resolve the | |
3587 | reloc directly. At this point we have not seen all the input | |
3588 | files, so it is possible that DEF_REGULAR is not set now but | |
3589 | will be set later (it is never cleared). In case of a weak | |
3590 | definition, DEF_REGULAR may be cleared later by a strong | |
3591 | definition in a shared library. We account for that | |
3592 | possibility below by storing information in the relocs_copied | |
3593 | field of the hash table entry. A similar situation occurs | |
3594 | when creating shared libraries and symbol visibility changes | |
3595 | render the symbol local. */ | |
3596 | ||
3597 | /* No need to do anything if we're not creating a shared object. */ | |
0e1862bb | 3598 | if (! bfd_link_pic (info)) |
915e5146 HPN |
3599 | break; |
3600 | ||
3601 | /* We don't need to handle relocs into sections not going into | |
3602 | the "real" output. */ | |
3603 | if ((sec->flags & SEC_ALLOC) == 0) | |
3604 | break; | |
3605 | ||
0d08de41 HPN |
3606 | /* If the symbol is local, then we know already we can |
3607 | eliminate the reloc. */ | |
3608 | if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
3609 | break; | |
bac23f82 | 3610 | |
0d08de41 HPN |
3611 | /* If this is with -Bsymbolic and the symbol isn't weak, and |
3612 | is defined by an ordinary object (the ones we include in | |
3613 | this shared library) then we can also eliminate the | |
3614 | reloc. See comment above for more eliminable cases which | |
3615 | we can't identify at this time. */ | |
cb1c8103 | 3616 | if (SYMBOLIC_BIND (info, h) |
0d08de41 HPN |
3617 | && h->root.type != bfd_link_hash_defweak |
3618 | && h->def_regular) | |
3619 | break; | |
915e5146 | 3620 | |
83bac4b0 NC |
3621 | /* We may need to create a reloc section in the dynobj and made room |
3622 | for this reloc. */ | |
915e5146 HPN |
3623 | if (sreloc == NULL) |
3624 | { | |
83bac4b0 NC |
3625 | sreloc = _bfd_elf_make_dynamic_reloc_section |
3626 | (sec, dynobj, 2, abfd, /*rela?*/ TRUE); | |
915e5146 | 3627 | |
83bac4b0 | 3628 | if (sreloc == NULL) |
b34976b6 | 3629 | return FALSE; |
915e5146 HPN |
3630 | } |
3631 | ||
eea6121a | 3632 | sreloc->size += sizeof (Elf32_External_Rela); |
915e5146 | 3633 | |
0d08de41 HPN |
3634 | /* We count the number of PC relative relocations we have |
3635 | entered for this symbol, so that we can discard them | |
3636 | again if the symbol is later defined by a regular object. | |
3637 | We know that h is really a pointer to an | |
915e5146 | 3638 | elf_cris_link_hash_entry. */ |
0d08de41 HPN |
3639 | { |
3640 | struct elf_cris_link_hash_entry *eh; | |
3641 | struct elf_cris_pcrel_relocs_copied *p; | |
915e5146 | 3642 | |
0d08de41 | 3643 | eh = elf_cris_hash_entry (h); |
915e5146 | 3644 | |
0d08de41 | 3645 | for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next) |
bfbff9eb | 3646 | if (p->section == sec) |
0d08de41 | 3647 | break; |
915e5146 | 3648 | |
0d08de41 HPN |
3649 | if (p == NULL) |
3650 | { | |
3651 | p = ((struct elf_cris_pcrel_relocs_copied *) | |
3652 | bfd_alloc (dynobj, (bfd_size_type) sizeof *p)); | |
3653 | if (p == NULL) | |
3654 | return FALSE; | |
3655 | p->next = eh->pcrel_relocs_copied; | |
3656 | eh->pcrel_relocs_copied = p; | |
bfbff9eb | 3657 | p->section = sec; |
0d08de41 HPN |
3658 | p->count = 0; |
3659 | p->r_type = r_type; | |
3660 | } | |
915e5146 | 3661 | |
0d08de41 HPN |
3662 | ++p->count; |
3663 | } | |
915e5146 HPN |
3664 | break; |
3665 | ||
06c15ad7 HPN |
3666 | /* This relocation describes the C++ object vtable hierarchy. |
3667 | Reconstruct it for later use during GC. */ | |
3668 | case R_CRIS_GNU_VTINHERIT: | |
c152c796 | 3669 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 3670 | return FALSE; |
06c15ad7 | 3671 | break; |
a7c10850 | 3672 | |
06c15ad7 HPN |
3673 | /* This relocation describes which C++ vtable entries are actually |
3674 | used. Record for later use during GC. */ | |
3675 | case R_CRIS_GNU_VTENTRY: | |
d17e0c6e JB |
3676 | BFD_ASSERT (h != NULL); |
3677 | if (h != NULL | |
3678 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 3679 | return FALSE; |
06c15ad7 | 3680 | break; |
4d96d128 | 3681 | |
100382c7 HPN |
3682 | case R_CRIS_16_TPREL: |
3683 | case R_CRIS_32_TPREL: | |
3684 | /* Already warned above, when necessary. */ | |
3685 | break; | |
3686 | ||
4d96d128 HPN |
3687 | default: |
3688 | /* Other relocs do not appear here. */ | |
3689 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 3690 | return FALSE; |
06c15ad7 HPN |
3691 | } |
3692 | } | |
a7c10850 | 3693 | |
b34976b6 | 3694 | return TRUE; |
06c15ad7 | 3695 | } |
4da81684 | 3696 | |
915e5146 HPN |
3697 | /* Set the sizes of the dynamic sections. */ |
3698 | ||
b34976b6 | 3699 | static bfd_boolean |
4dfe6ac6 NC |
3700 | elf_cris_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
3701 | struct bfd_link_info *info) | |
915e5146 | 3702 | { |
4dfe6ac6 | 3703 | struct elf_cris_link_hash_table * htab; |
915e5146 HPN |
3704 | bfd *dynobj; |
3705 | asection *s; | |
b34976b6 AM |
3706 | bfd_boolean plt; |
3707 | bfd_boolean relocs; | |
915e5146 | 3708 | |
4dfe6ac6 NC |
3709 | htab = elf_cris_hash_table (info); |
3710 | if (htab == NULL) | |
3711 | return FALSE; | |
3712 | ||
ce558b89 | 3713 | dynobj = htab->root.dynobj; |
915e5146 HPN |
3714 | BFD_ASSERT (dynobj != NULL); |
3715 | ||
ce558b89 | 3716 | if (htab->root.dynamic_sections_created) |
915e5146 HPN |
3717 | { |
3718 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 3719 | if (bfd_link_executable (info) && !info->nointerp) |
915e5146 | 3720 | { |
3d4d4302 | 3721 | s = bfd_get_linker_section (dynobj, ".interp"); |
915e5146 | 3722 | BFD_ASSERT (s != NULL); |
eea6121a | 3723 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
915e5146 HPN |
3724 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
3725 | } | |
3726 | } | |
3727 | else | |
3728 | { | |
3729 | /* Adjust all expected GOTPLT uses to use a GOT entry instead. */ | |
4dfe6ac6 NC |
3730 | elf_cris_link_hash_traverse (htab, elf_cris_adjust_gotplt_to_got, |
3731 | info); | |
915e5146 HPN |
3732 | |
3733 | /* We may have created entries in the .rela.got section. | |
3734 | However, if we are not creating the dynamic sections, we will | |
3735 | not actually use these entries. Reset the size of .rela.got, | |
3736 | which will cause it to get stripped from the output file | |
3737 | below. */ | |
ce558b89 | 3738 | s = htab->root.srelgot; |
915e5146 | 3739 | if (s != NULL) |
eea6121a | 3740 | s->size = 0; |
915e5146 HPN |
3741 | } |
3742 | ||
3743 | /* If this is a -Bsymbolic shared link, then we need to discard all PC | |
3744 | relative relocs against symbols defined in a regular object. We | |
3745 | allocated space for them in the check_relocs routine, but we will not | |
3746 | fill them in in the relocate_section routine. We also discard space | |
3747 | for relocs that have become for local symbols due to symbol | |
4d96d128 HPN |
3748 | visibility changes. For programs, we discard space for relocs for |
3749 | symbols not referenced by any dynamic object. */ | |
0e1862bb | 3750 | if (bfd_link_pic (info)) |
4dfe6ac6 | 3751 | elf_cris_link_hash_traverse (htab, |
4d96d128 | 3752 | elf_cris_discard_excess_dso_dynamics, |
4dfe6ac6 | 3753 | info); |
4d96d128 | 3754 | else |
4dfe6ac6 | 3755 | elf_cris_link_hash_traverse (htab, |
4d96d128 | 3756 | elf_cris_discard_excess_program_dynamics, |
4dfe6ac6 | 3757 | info); |
915e5146 HPN |
3758 | |
3759 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
3760 | determined the sizes of the various dynamic sections. Allocate | |
3761 | memory for them. */ | |
b34976b6 AM |
3762 | plt = FALSE; |
3763 | relocs = FALSE; | |
915e5146 HPN |
3764 | for (s = dynobj->sections; s != NULL; s = s->next) |
3765 | { | |
3766 | const char *name; | |
915e5146 HPN |
3767 | |
3768 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
3769 | continue; | |
3770 | ||
3771 | /* It's OK to base decisions on the section name, because none | |
3772 | of the dynobj section names depend upon the input files. */ | |
3773 | name = bfd_get_section_name (dynobj, s); | |
3774 | ||
915e5146 HPN |
3775 | if (strcmp (name, ".plt") == 0) |
3776 | { | |
c456f082 AM |
3777 | /* Remember whether there is a PLT. */ |
3778 | plt = s->size != 0; | |
915e5146 | 3779 | } |
100382c7 HPN |
3780 | else if (strcmp (name, ".got.plt") == 0) |
3781 | { | |
3782 | /* The .got.plt contains the .got header as well as the | |
3783 | actual .got.plt contents. The .got header may contain a | |
3784 | R_CRIS_DTPMOD entry at index 3. */ | |
4dfe6ac6 | 3785 | s->size += htab->dtpmod_refcount != 0 |
100382c7 HPN |
3786 | ? 8 : 0; |
3787 | } | |
0112cd26 | 3788 | else if (CONST_STRNEQ (name, ".rela")) |
915e5146 | 3789 | { |
100382c7 | 3790 | if (strcmp (name, ".rela.got") == 0 |
4dfe6ac6 | 3791 | && htab->dtpmod_refcount != 0 |
0e1862bb | 3792 | && bfd_link_pic (info)) |
100382c7 HPN |
3793 | s->size += sizeof (Elf32_External_Rela); |
3794 | ||
c456f082 | 3795 | if (s->size != 0) |
915e5146 | 3796 | { |
915e5146 HPN |
3797 | /* Remember whether there are any reloc sections other |
3798 | than .rela.plt. */ | |
3799 | if (strcmp (name, ".rela.plt") != 0) | |
b34976b6 | 3800 | relocs = TRUE; |
915e5146 | 3801 | |
915e5146 HPN |
3802 | /* We use the reloc_count field as a counter if we need |
3803 | to copy relocs into the output file. */ | |
3804 | s->reloc_count = 0; | |
3805 | } | |
3806 | } | |
0112cd26 | 3807 | else if (! CONST_STRNEQ (name, ".got") |
1fbd05e1 HPN |
3808 | && strcmp (name, ".dynbss") != 0 |
3809 | && s != htab->root.sdynrelro) | |
915e5146 HPN |
3810 | { |
3811 | /* It's not one of our sections, so don't allocate space. */ | |
3812 | continue; | |
3813 | } | |
3814 | ||
c456f082 | 3815 | if (s->size == 0) |
915e5146 | 3816 | { |
c456f082 AM |
3817 | /* If we don't need this section, strip it from the |
3818 | output file. This is mostly to handle .rela.bss and | |
3819 | .rela.plt. We must create both sections in | |
3820 | create_dynamic_sections, because they must be created | |
3821 | before the linker maps input sections to output | |
3822 | sections. The linker does that before | |
3823 | adjust_dynamic_symbol is called, and it is that | |
3824 | function which decides whether anything needs to go | |
3825 | into these sections. */ | |
8423293d | 3826 | s->flags |= SEC_EXCLUDE; |
915e5146 HPN |
3827 | continue; |
3828 | } | |
3829 | ||
c456f082 AM |
3830 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
3831 | continue; | |
3832 | ||
915e5146 HPN |
3833 | /* Allocate memory for the section contents. We use bfd_zalloc here |
3834 | in case unused entries are not reclaimed before the section's | |
3835 | contents are written out. This should not happen, but this way | |
3836 | if it does, we will not write out garbage. For reloc sections, | |
3837 | this will make entries have the type R_CRIS_NONE. */ | |
eea6121a | 3838 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
c456f082 | 3839 | if (s->contents == NULL) |
b34976b6 | 3840 | return FALSE; |
915e5146 HPN |
3841 | } |
3842 | ||
3843 | if (elf_hash_table (info)->dynamic_sections_created) | |
3844 | { | |
3845 | /* Add some entries to the .dynamic section. We fill in the | |
3846 | values later, in elf_cris_finish_dynamic_sections, but we | |
3847 | must add the entries now so that we get the correct size for | |
3848 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
3849 | dynamic linker and used by the debugger. */ | |
dc810e39 | 3850 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 3851 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 3852 | |
0e1862bb | 3853 | if (!bfd_link_pic (info)) |
915e5146 | 3854 | { |
dc810e39 | 3855 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 3856 | return FALSE; |
915e5146 HPN |
3857 | } |
3858 | ||
3859 | if (plt) | |
3860 | { | |
dc810e39 AM |
3861 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
3862 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
3863 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
3864 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 3865 | return FALSE; |
915e5146 HPN |
3866 | } |
3867 | ||
3868 | if (relocs) | |
3869 | { | |
dc810e39 AM |
3870 | if (!add_dynamic_entry (DT_RELA, 0) |
3871 | || !add_dynamic_entry (DT_RELASZ, 0) | |
3872 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 3873 | return FALSE; |
915e5146 HPN |
3874 | } |
3875 | ||
99e4ae17 | 3876 | if ((info->flags & DF_TEXTREL) != 0) |
915e5146 | 3877 | { |
dc810e39 | 3878 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 3879 | return FALSE; |
915e5146 HPN |
3880 | info->flags |= DF_TEXTREL; |
3881 | } | |
3882 | } | |
dc810e39 | 3883 | #undef add_dynamic_entry |
915e5146 | 3884 | |
b34976b6 | 3885 | return TRUE; |
915e5146 HPN |
3886 | } |
3887 | ||
3888 | /* This function is called via elf_cris_link_hash_traverse if we are | |
3889 | creating a shared object. In the -Bsymbolic case, it discards the | |
3890 | space allocated to copy PC relative relocs against symbols which | |
3891 | are defined in regular objects. For the normal non-symbolic case, | |
3892 | we also discard space for relocs that have become local due to | |
3893 | symbol visibility changes. We allocated space for them in the | |
3894 | check_relocs routine, but we won't fill them in in the | |
3895 | relocate_section routine. */ | |
3896 | ||
b34976b6 | 3897 | static bfd_boolean |
2c3fc389 NC |
3898 | elf_cris_discard_excess_dso_dynamics (struct elf_cris_link_hash_entry *h, |
3899 | void * inf) | |
915e5146 HPN |
3900 | { |
3901 | struct elf_cris_pcrel_relocs_copied *s; | |
3902 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
3903 | ||
3904 | /* If a symbol has been forced local or we have found a regular | |
3905 | definition for the symbolic link case, then we won't be needing | |
3906 | any relocs. */ | |
f5385ebf AM |
3907 | if (h->root.def_regular |
3908 | && (h->root.forced_local | |
cb1c8103 | 3909 | || SYMBOLIC_BIND (info, &h->root))) |
915e5146 HPN |
3910 | { |
3911 | for (s = h->pcrel_relocs_copied; s != NULL; s = s->next) | |
bfbff9eb HPN |
3912 | { |
3913 | asection *sreloc | |
e236b51d HPN |
3914 | = _bfd_elf_get_dynamic_reloc_section (elf_hash_table (info) |
3915 | ->dynobj, | |
bfbff9eb HPN |
3916 | s->section, |
3917 | /*rela?*/ TRUE); | |
3918 | sreloc->size -= s->count * sizeof (Elf32_External_Rela); | |
3919 | } | |
0d08de41 HPN |
3920 | return TRUE; |
3921 | } | |
3922 | ||
3923 | /* If we have accounted for PC-relative relocs for read-only | |
3924 | sections, now is the time to warn for them. We can't do it in | |
3925 | cris_elf_check_relocs, because we don't know the status of all | |
3926 | symbols at that time (and it's common to force symbols local | |
3927 | late). */ | |
3928 | ||
3929 | for (s = h->pcrel_relocs_copied; s != NULL; s = s->next) | |
bfbff9eb HPN |
3930 | if ((s->section->flags & SEC_READONLY) != 0) |
3931 | { | |
3932 | /* FIXME: How do we make this optionally a warning only? */ | |
4eca0228 | 3933 | _bfd_error_handler |
695344c0 | 3934 | /* xgettext:c-format */ |
bfbff9eb HPN |
3935 | (_("%B, section `%A', to symbol `%s':\n" |
3936 | " relocation %s should not be used" | |
3937 | " in a shared object; recompile with -fPIC"), | |
3938 | s->section->owner, | |
3939 | s->section, | |
3940 | h->root.root.root.string, | |
3941 | cris_elf_howto_table[s->r_type].name); | |
3942 | ||
3943 | info->flags |= DF_TEXTREL; | |
3944 | } | |
4d96d128 | 3945 | |
b34976b6 | 3946 | return TRUE; |
4d96d128 HPN |
3947 | } |
3948 | ||
3949 | /* This function is called via elf_cris_link_hash_traverse if we are *not* | |
3950 | creating a shared object. We discard space for relocs for symbols put | |
3951 | in the .got, but which we found we do not have to resolve at run-time. */ | |
3952 | ||
b34976b6 | 3953 | static bfd_boolean |
2c3fc389 NC |
3954 | elf_cris_discard_excess_program_dynamics (struct elf_cris_link_hash_entry *h, |
3955 | void * inf) | |
4d96d128 HPN |
3956 | { |
3957 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
3958 | ||
3959 | /* If we're not creating a shared library and have a symbol which is | |
3960 | referred to by .got references, but the symbol is defined locally, | |
e4a2175c HPN |
3961 | (or rather, not defined by a DSO) then lose the reloc for the .got |
3962 | (don't allocate room for it). Likewise for relocs for something | |
3963 | for which we create a PLT. */ | |
f5385ebf | 3964 | if (!h->root.def_dynamic |
e4a2175c | 3965 | || h->root.plt.refcount > 0) |
4d96d128 | 3966 | { |
100382c7 | 3967 | if (h->reg_got_refcount > 0 |
4d96d128 HPN |
3968 | /* The size of this section is only valid and in sync with the |
3969 | various reference counts if we do dynamic; don't decrement it | |
3970 | otherwise. */ | |
3971 | && elf_hash_table (info)->dynamic_sections_created) | |
3972 | { | |
3973 | bfd *dynobj = elf_hash_table (info)->dynobj; | |
ce558b89 | 3974 | asection *srelgot = elf_hash_table (info)->srelgot; |
4d96d128 HPN |
3975 | |
3976 | BFD_ASSERT (dynobj != NULL); | |
4d96d128 HPN |
3977 | BFD_ASSERT (srelgot != NULL); |
3978 | ||
eea6121a | 3979 | srelgot->size -= sizeof (Elf32_External_Rela); |
4d96d128 HPN |
3980 | } |
3981 | ||
3982 | /* If the locally-defined symbol isn't used by a DSO, then we don't | |
3983 | have to export it as a dynamic symbol. This was already done for | |
3984 | functions; doing this for all symbols would presumably not | |
e5dfef09 | 3985 | introduce new problems. Of course we don't do this if we're |
2d8dcb81 HPN |
3986 | exporting all dynamic symbols, or all data symbols, regardless of |
3987 | them being referenced or not. */ | |
3988 | if (! (info->export_dynamic | |
3989 | || (h->root.type != STT_FUNC && info->dynamic_data)) | |
77cfaee6 | 3990 | && h->root.dynindx != -1 |
5d84490b | 3991 | && !h->root.dynamic |
f5385ebf AM |
3992 | && !h->root.def_dynamic |
3993 | && !h->root.ref_dynamic) | |
e5dfef09 HPN |
3994 | { |
3995 | h->root.dynindx = -1; | |
3996 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
3997 | h->root.dynstr_index); | |
3998 | } | |
915e5146 HPN |
3999 | } |
4000 | ||
b34976b6 | 4001 | return TRUE; |
915e5146 HPN |
4002 | } |
4003 | ||
4004 | /* Reject a file depending on presence and expectation of prefixed | |
4005 | underscores on symbols. */ | |
4da81684 | 4006 | |
b34976b6 | 4007 | static bfd_boolean |
2c3fc389 | 4008 | cris_elf_object_p (bfd *abfd) |
4da81684 | 4009 | { |
bac23f82 HPN |
4010 | if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags)) |
4011 | return FALSE; | |
4012 | ||
4da81684 HPN |
4013 | if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)) |
4014 | return (bfd_get_symbol_leading_char (abfd) == '_'); | |
4015 | else | |
4016 | return (bfd_get_symbol_leading_char (abfd) == 0); | |
4017 | } | |
4018 | ||
bac23f82 HPN |
4019 | /* Mark presence or absence of leading underscore. Set machine type |
4020 | flags from mach type. */ | |
4da81684 HPN |
4021 | |
4022 | static void | |
2c3fc389 NC |
4023 | cris_elf_final_write_processing (bfd *abfd, |
4024 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
4da81684 | 4025 | { |
bac23f82 HPN |
4026 | unsigned long e_flags = elf_elfheader (abfd)->e_flags; |
4027 | ||
4028 | e_flags &= ~EF_CRIS_UNDERSCORE; | |
4da81684 | 4029 | if (bfd_get_symbol_leading_char (abfd) == '_') |
bac23f82 HPN |
4030 | e_flags |= EF_CRIS_UNDERSCORE; |
4031 | ||
4032 | switch (bfd_get_mach (abfd)) | |
4033 | { | |
4034 | case bfd_mach_cris_v0_v10: | |
4035 | e_flags |= EF_CRIS_VARIANT_ANY_V0_V10; | |
4036 | break; | |
4037 | ||
4038 | case bfd_mach_cris_v10_v32: | |
4039 | e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32; | |
4040 | break; | |
4041 | ||
4042 | case bfd_mach_cris_v32: | |
4043 | e_flags |= EF_CRIS_VARIANT_V32; | |
4044 | break; | |
4045 | ||
4046 | default: | |
4047 | _bfd_abort (__FILE__, __LINE__, | |
4048 | _("Unexpected machine number")); | |
4049 | } | |
4050 | ||
4051 | elf_elfheader (abfd)->e_flags = e_flags; | |
4052 | } | |
4053 | ||
4054 | /* Set the mach type from e_flags value. */ | |
4055 | ||
4056 | static bfd_boolean | |
2c3fc389 NC |
4057 | cris_elf_set_mach_from_flags (bfd *abfd, |
4058 | unsigned long flags) | |
bac23f82 HPN |
4059 | { |
4060 | switch (flags & EF_CRIS_VARIANT_MASK) | |
4061 | { | |
4062 | case EF_CRIS_VARIANT_ANY_V0_V10: | |
4063 | bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10); | |
4064 | break; | |
4065 | ||
4066 | case EF_CRIS_VARIANT_V32: | |
4067 | bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32); | |
4068 | break; | |
4069 | ||
4070 | case EF_CRIS_VARIANT_COMMON_V10_V32: | |
4071 | bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32); | |
4072 | break; | |
4073 | ||
4074 | default: | |
4075 | /* Since we don't recognize them, we obviously can't support them | |
4076 | with this code; we'd have to require that all future handling | |
4077 | would be optional. */ | |
4078 | bfd_set_error (bfd_error_wrong_format); | |
4079 | return FALSE; | |
4080 | } | |
4081 | ||
4082 | return TRUE; | |
4da81684 HPN |
4083 | } |
4084 | ||
4085 | /* Display the flags field. */ | |
4086 | ||
b34976b6 | 4087 | static bfd_boolean |
2c3fc389 | 4088 | cris_elf_print_private_bfd_data (bfd *abfd, void * ptr) |
4da81684 HPN |
4089 | { |
4090 | FILE *file = (FILE *) ptr; | |
4091 | ||
f12123c0 | 4092 | BFD_ASSERT (abfd != NULL && ptr != NULL); |
4da81684 HPN |
4093 | |
4094 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
4095 | ||
4096 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
4097 | ||
4098 | if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE) | |
4099 | fprintf (file, _(" [symbols have a _ prefix]")); | |
bac23f82 HPN |
4100 | if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK) |
4101 | == EF_CRIS_VARIANT_COMMON_V10_V32) | |
4102 | fprintf (file, _(" [v10 and v32]")); | |
4103 | if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK) | |
4104 | == EF_CRIS_VARIANT_V32) | |
4105 | fprintf (file, _(" [v32]")); | |
4da81684 HPN |
4106 | |
4107 | fputc ('\n', file); | |
b34976b6 | 4108 | return TRUE; |
4da81684 HPN |
4109 | } |
4110 | ||
4111 | /* Don't mix files with and without a leading underscore. */ | |
4112 | ||
b34976b6 | 4113 | static bfd_boolean |
50e03d47 | 4114 | cris_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
4da81684 | 4115 | { |
50e03d47 | 4116 | bfd *obfd = info->output_bfd; |
bac23f82 | 4117 | int imach, omach; |
4da81684 | 4118 | |
50e03d47 | 4119 | if (! _bfd_generic_verify_endian_match (ibfd, info)) |
b34976b6 | 4120 | return FALSE; |
4da81684 HPN |
4121 | |
4122 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
4123 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 4124 | return TRUE; |
4da81684 | 4125 | |
bac23f82 HPN |
4126 | imach = bfd_get_mach (ibfd); |
4127 | ||
4da81684 HPN |
4128 | if (! elf_flags_init (obfd)) |
4129 | { | |
4130 | /* This happens when ld starts out with a 'blank' output file. */ | |
b34976b6 | 4131 | elf_flags_init (obfd) = TRUE; |
4da81684 | 4132 | |
bac23f82 HPN |
4133 | /* We ignore the linker-set mach, and instead set it according to |
4134 | the first input file. This would also happen if we could | |
4135 | somehow filter out the OUTPUT_ARCH () setting from elf.sc. | |
4136 | This allows us to keep the same linker config across | |
4137 | cris(v0..v10) and crisv32. The drawback is that we can't force | |
4138 | the output type, which might be a sane thing to do for a | |
4139 | v10+v32 compatibility object. */ | |
4140 | if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach)) | |
4141 | return FALSE; | |
4da81684 HPN |
4142 | } |
4143 | ||
bac23f82 HPN |
4144 | if (bfd_get_symbol_leading_char (ibfd) |
4145 | != bfd_get_symbol_leading_char (obfd)) | |
4da81684 | 4146 | { |
4eca0228 | 4147 | _bfd_error_handler |
bac23f82 | 4148 | (bfd_get_symbol_leading_char (ibfd) == '_' |
d003868e AM |
4149 | ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols") |
4150 | : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"), | |
4151 | ibfd); | |
4da81684 | 4152 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4153 | return FALSE; |
4da81684 HPN |
4154 | } |
4155 | ||
bac23f82 HPN |
4156 | omach = bfd_get_mach (obfd); |
4157 | ||
4158 | if (imach != omach) | |
4159 | { | |
4160 | /* We can get an incompatible combination only if either is | |
4161 | bfd_mach_cris_v32, and the other one isn't compatible. */ | |
4162 | if ((imach == bfd_mach_cris_v32 | |
4163 | && omach != bfd_mach_cris_v10_v32) | |
4164 | || (omach == bfd_mach_cris_v32 | |
4165 | && imach != bfd_mach_cris_v10_v32)) | |
4166 | { | |
4eca0228 | 4167 | _bfd_error_handler |
bac23f82 HPN |
4168 | ((imach == bfd_mach_cris_v32) |
4169 | ? _("%B contains CRIS v32 code, incompatible" | |
4170 | " with previous objects") | |
4171 | : _("%B contains non-CRIS-v32 code, incompatible" | |
4172 | " with previous objects"), | |
4173 | ibfd); | |
4174 | bfd_set_error (bfd_error_bad_value); | |
4175 | return FALSE; | |
4176 | } | |
4177 | ||
4178 | /* We don't have to check the case where the input is compatible | |
4179 | with v10 and v32, because the output is already known to be set | |
4180 | to the other (compatible) mach. */ | |
4181 | if (omach == bfd_mach_cris_v10_v32 | |
4182 | && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach)) | |
4183 | return FALSE; | |
4184 | } | |
4185 | ||
b34976b6 | 4186 | return TRUE; |
4da81684 | 4187 | } |
99e4ae17 | 4188 | |
bac23f82 HPN |
4189 | /* Do side-effects of e_flags copying to obfd. */ |
4190 | ||
4191 | static bfd_boolean | |
2c3fc389 | 4192 | cris_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
bac23f82 | 4193 | { |
bac23f82 HPN |
4194 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
4195 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
4196 | return TRUE; | |
4197 | ||
1047201f AM |
4198 | /* Call the base function. */ |
4199 | if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd)) | |
4200 | return FALSE; | |
4201 | ||
bac23f82 HPN |
4202 | /* Do what we really came here for. */ |
4203 | return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd)); | |
4204 | } | |
99e4ae17 AJ |
4205 | |
4206 | static enum elf_reloc_type_class | |
7e612e98 AM |
4207 | elf_cris_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
4208 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
4209 | const Elf_Internal_Rela *rela) | |
99e4ae17 | 4210 | { |
100382c7 HPN |
4211 | enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rela->r_info); |
4212 | switch (r_type) | |
99e4ae17 AJ |
4213 | { |
4214 | case R_CRIS_RELATIVE: | |
4215 | return reloc_class_relative; | |
4216 | case R_CRIS_JUMP_SLOT: | |
4217 | return reloc_class_plt; | |
4218 | case R_CRIS_COPY: | |
4219 | return reloc_class_copy; | |
4220 | default: | |
4221 | return reloc_class_normal; | |
4222 | } | |
4223 | } | |
100382c7 HPN |
4224 | |
4225 | /* The elf_backend_got_elt_size worker. For one symbol, we can have up to | |
4226 | two GOT entries from three types with two different sizes. We handle | |
4227 | it as a single entry, so we can use the regular offset-calculation | |
4228 | machinery. */ | |
4229 | ||
4230 | static bfd_vma | |
4231 | elf_cris_got_elt_size (bfd *abfd ATTRIBUTE_UNUSED, | |
4232 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
4233 | struct elf_link_hash_entry *hr, | |
4234 | bfd *ibfd, | |
4235 | unsigned long symndx) | |
4236 | { | |
4237 | struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) hr; | |
100382c7 HPN |
4238 | bfd_vma eltsiz = 0; |
4239 | ||
4240 | /* We may have one regular GOT entry or up to two TLS GOT | |
4241 | entries. */ | |
4242 | if (h == NULL) | |
4243 | { | |
b2e254f9 | 4244 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
100382c7 HPN |
4245 | bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (ibfd); |
4246 | ||
4247 | BFD_ASSERT (local_got_refcounts != NULL); | |
4248 | ||
4249 | if (local_got_refcounts[LGOT_REG_NDX (symndx)] > 0) | |
4250 | { | |
4251 | /* We can't have a variable referred to both as a regular | |
4252 | variable and through TLS relocs. */ | |
4253 | BFD_ASSERT (local_got_refcounts[LGOT_DTP_NDX (symndx)] == 0 | |
4254 | && local_got_refcounts[LGOT_TPREL_NDX (symndx)] == 0); | |
4255 | return 4; | |
4256 | } | |
4257 | ||
4258 | if (local_got_refcounts[LGOT_DTP_NDX (symndx)] > 0) | |
4259 | eltsiz += 8; | |
4260 | ||
4261 | if (local_got_refcounts[LGOT_TPREL_NDX (symndx)] > 0) | |
4262 | eltsiz += 4; | |
4263 | } | |
4264 | else | |
4265 | { | |
4266 | struct elf_cris_link_hash_entry *hh = elf_cris_hash_entry (h); | |
4267 | if (hh->reg_got_refcount > 0) | |
4268 | { | |
4269 | /* The actual error-on-input is emitted elsewhere. */ | |
4270 | BFD_ASSERT (hh->dtp_refcount == 0 && hh->tprel_refcount == 0); | |
4271 | return 4; | |
4272 | } | |
4273 | ||
4274 | if (hh->dtp_refcount > 0) | |
4275 | eltsiz += 8; | |
4276 | ||
4277 | if (hh->tprel_refcount > 0) | |
4278 | eltsiz += 4; | |
4279 | } | |
4280 | ||
b2e254f9 HPN |
4281 | /* We're only called when h->got.refcount is non-zero, so we must |
4282 | have a non-zero size. */ | |
4283 | BFD_ASSERT (eltsiz != 0); | |
100382c7 HPN |
4284 | return eltsiz; |
4285 | } | |
06c15ad7 HPN |
4286 | \f |
4287 | #define ELF_ARCH bfd_arch_cris | |
ae95ffa6 | 4288 | #define ELF_TARGET_ID CRIS_ELF_DATA |
06c15ad7 HPN |
4289 | #define ELF_MACHINE_CODE EM_CRIS |
4290 | #define ELF_MAXPAGESIZE 0x2000 | |
4291 | ||
6d00b590 | 4292 | #define TARGET_LITTLE_SYM cris_elf32_vec |
06c15ad7 | 4293 | #define TARGET_LITTLE_NAME "elf32-cris" |
4da81684 | 4294 | #define elf_symbol_leading_char 0 |
06c15ad7 HPN |
4295 | |
4296 | #define elf_info_to_howto_rel NULL | |
4297 | #define elf_info_to_howto cris_info_to_howto_rela | |
4298 | #define elf_backend_relocate_section cris_elf_relocate_section | |
4299 | #define elf_backend_gc_mark_hook cris_elf_gc_mark_hook | |
4300 | #define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook | |
5d5a918a | 4301 | #define elf_backend_plt_sym_val cris_elf_plt_sym_val |
06c15ad7 | 4302 | #define elf_backend_check_relocs cris_elf_check_relocs |
72209a1f HPN |
4303 | #define elf_backend_grok_prstatus cris_elf_grok_prstatus |
4304 | #define elf_backend_grok_psinfo cris_elf_grok_psinfo | |
06c15ad7 HPN |
4305 | |
4306 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 4307 | #define elf_backend_can_refcount 1 |
06c15ad7 | 4308 | |
4da81684 HPN |
4309 | #define elf_backend_object_p cris_elf_object_p |
4310 | #define elf_backend_final_write_processing \ | |
4311 | cris_elf_final_write_processing | |
4312 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
4313 | cris_elf_print_private_bfd_data | |
4314 | #define bfd_elf32_bfd_merge_private_bfd_data \ | |
4315 | cris_elf_merge_private_bfd_data | |
bac23f82 HPN |
4316 | #define bfd_elf32_bfd_copy_private_bfd_data \ |
4317 | cris_elf_copy_private_bfd_data | |
4da81684 | 4318 | |
06c15ad7 | 4319 | #define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup |
157090f7 | 4320 | #define bfd_elf32_bfd_reloc_name_lookup cris_reloc_name_lookup |
06c15ad7 | 4321 | |
915e5146 HPN |
4322 | #define bfd_elf32_bfd_link_hash_table_create \ |
4323 | elf_cris_link_hash_table_create | |
4324 | #define elf_backend_adjust_dynamic_symbol \ | |
4325 | elf_cris_adjust_dynamic_symbol | |
237bc7f0 HPN |
4326 | #define elf_backend_copy_indirect_symbol \ |
4327 | elf_cris_copy_indirect_symbol | |
915e5146 HPN |
4328 | #define elf_backend_size_dynamic_sections \ |
4329 | elf_cris_size_dynamic_sections | |
74541ad4 | 4330 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
915e5146 HPN |
4331 | #define elf_backend_finish_dynamic_symbol \ |
4332 | elf_cris_finish_dynamic_symbol | |
4333 | #define elf_backend_finish_dynamic_sections \ | |
4334 | elf_cris_finish_dynamic_sections | |
4335 | #define elf_backend_create_dynamic_sections \ | |
4336 | _bfd_elf_create_dynamic_sections | |
4337 | #define bfd_elf32_bfd_final_link \ | |
c152c796 | 4338 | bfd_elf_gc_common_final_link |
915e5146 | 4339 | #define elf_backend_hide_symbol elf_cris_hide_symbol |
99e4ae17 | 4340 | #define elf_backend_reloc_type_class elf_cris_reloc_type_class |
915e5146 HPN |
4341 | |
4342 | #define elf_backend_want_got_plt 1 | |
4343 | #define elf_backend_plt_readonly 1 | |
4344 | #define elf_backend_want_plt_sym 0 | |
4345 | #define elf_backend_got_header_size 12 | |
100382c7 | 4346 | #define elf_backend_got_elt_size elf_cris_got_elt_size |
64f52338 | 4347 | #define elf_backend_dtrel_excludes_plt 1 |
1fbd05e1 | 4348 | #define elf_backend_want_dynrelro 1 |
915e5146 | 4349 | |
06c15ad7 HPN |
4350 | /* Later, we my want to optimize RELA entries into REL entries for dynamic |
4351 | linking and libraries (if it's a win of any significance). Until then, | |
4352 | take the easy route. */ | |
4353 | #define elf_backend_may_use_rel_p 0 | |
4354 | #define elf_backend_may_use_rela_p 1 | |
f0fe0e16 | 4355 | #define elf_backend_rela_normal 1 |
06c15ad7 | 4356 | |
a2f63b2e MR |
4357 | #define elf_backend_linux_prpsinfo32_ugid16 TRUE |
4358 | ||
06c15ad7 | 4359 | #include "elf32-target.h" |
4da81684 | 4360 | |
4da81684 HPN |
4361 | #undef TARGET_LITTLE_SYM |
4362 | #undef TARGET_LITTLE_NAME | |
4363 | #undef elf_symbol_leading_char | |
4364 | ||
6d00b590 | 4365 | #define TARGET_LITTLE_SYM cris_elf32_us_vec |
4da81684 HPN |
4366 | #define TARGET_LITTLE_NAME "elf32-us-cris" |
4367 | #define elf_symbol_leading_char '_' | |
16cecee5 L |
4368 | #undef elf32_bed |
4369 | #define elf32_bed elf32_us_cris_bed | |
4da81684 HPN |
4370 | |
4371 | #include "elf32-target.h" |