Commit | Line | Data |
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06c15ad7 | 1 | /* CRIS-specific support for 32-bit ELF. |
b90efa5b | 2 | Copyright (C) 2000-2015 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 | { | |
64d29018 | 466 | _bfd_error_handler (_("%B: invalid CRIS reloc number: %d"), abfd, r_type); |
5860e3f8 NC |
467 | r_type = 0; |
468 | } | |
06c15ad7 HPN |
469 | cache_ptr->howto = & cris_elf_howto_table [r_type]; |
470 | } | |
bac23f82 HPN |
471 | |
472 | bfd_reloc_status_type | |
2c3fc389 NC |
473 | cris_elf_pcrel_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
474 | arelent *reloc_entry, | |
475 | asymbol *symbol, | |
476 | void * data ATTRIBUTE_UNUSED, | |
477 | asection *input_section, | |
478 | bfd *output_bfd, | |
479 | char **error_message ATTRIBUTE_UNUSED) | |
bac23f82 HPN |
480 | { |
481 | /* By default (using only bfd_elf_generic_reloc when linking to | |
482 | non-ELF formats) PC-relative relocs are relative to the beginning | |
483 | of the reloc. CRIS PC-relative relocs are relative to the position | |
484 | *after* the reloc because that's what pre-CRISv32 PC points to | |
485 | after reading an insn field with that reloc. (For CRISv32, PC is | |
486 | actually relative to the start of the insn, but we keep the old | |
487 | definition.) Still, we use as much generic machinery as we can. | |
488 | ||
489 | Only adjust when doing a final link. */ | |
490 | if (output_bfd == (bfd *) NULL) | |
491 | reloc_entry->addend -= 1 << reloc_entry->howto->size; | |
492 | ||
493 | return | |
494 | bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
495 | input_section, output_bfd, error_message); | |
496 | } | |
06c15ad7 | 497 | \f |
bac23f82 HPN |
498 | /* Support for core dump NOTE sections. |
499 | The slightly unintuitive code layout is an attempt to keep at least | |
500 | some similarities with other ports, hoping to simplify general | |
501 | changes, while still keeping Linux/CRIS and Linux/CRISv32 code apart. */ | |
72209a1f | 502 | |
b34976b6 | 503 | static bfd_boolean |
2c3fc389 | 504 | cris_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
72209a1f HPN |
505 | { |
506 | int offset; | |
eea6121a | 507 | size_t size; |
72209a1f | 508 | |
bac23f82 HPN |
509 | if (bfd_get_mach (abfd) == bfd_mach_cris_v32) |
510 | switch (note->descsz) | |
511 | { | |
512 | default: | |
513 | return FALSE; | |
514 | ||
515 | case 202: /* Linux/CRISv32 */ | |
516 | /* pr_cursig */ | |
228e534f | 517 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
bac23f82 HPN |
518 | |
519 | /* pr_pid */ | |
228e534f | 520 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 22); |
bac23f82 HPN |
521 | |
522 | /* pr_reg */ | |
523 | offset = 70; | |
524 | size = 128; | |
525 | ||
526 | break; | |
527 | } | |
528 | else | |
529 | switch (note->descsz) | |
530 | { | |
72209a1f | 531 | default: |
b34976b6 | 532 | return FALSE; |
72209a1f | 533 | |
bc0d28ee | 534 | case 214: /* Linux/CRIS */ |
72209a1f | 535 | /* pr_cursig */ |
228e534f | 536 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
72209a1f HPN |
537 | |
538 | /* pr_pid */ | |
228e534f | 539 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 22); |
72209a1f HPN |
540 | |
541 | /* pr_reg */ | |
542 | offset = 70; | |
eea6121a | 543 | size = 140; |
72209a1f HPN |
544 | |
545 | break; | |
bac23f82 | 546 | } |
72209a1f HPN |
547 | |
548 | /* Make a ".reg/999" section. */ | |
549 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 550 | size, note->descpos + offset); |
72209a1f HPN |
551 | } |
552 | ||
b34976b6 | 553 | static bfd_boolean |
2c3fc389 | 554 | cris_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
72209a1f | 555 | { |
bac23f82 HPN |
556 | if (bfd_get_mach (abfd) == bfd_mach_cris_v32) |
557 | switch (note->descsz) | |
558 | { | |
559 | default: | |
560 | return FALSE; | |
561 | ||
562 | case 124: /* Linux/CRISv32 elf_prpsinfo */ | |
228e534f | 563 | elf_tdata (abfd)->core->program |
bac23f82 | 564 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); |
228e534f | 565 | elf_tdata (abfd)->core->command |
bac23f82 HPN |
566 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); |
567 | } | |
568 | else | |
569 | switch (note->descsz) | |
570 | { | |
72209a1f | 571 | default: |
b34976b6 | 572 | return FALSE; |
72209a1f HPN |
573 | |
574 | case 124: /* Linux/CRIS elf_prpsinfo */ | |
228e534f | 575 | elf_tdata (abfd)->core->program |
bac23f82 | 576 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); |
228e534f | 577 | elf_tdata (abfd)->core->command |
bac23f82 HPN |
578 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); |
579 | } | |
72209a1f HPN |
580 | |
581 | /* Note that for some reason, a spurious space is tacked | |
582 | onto the end of the args in some (at least one anyway) | |
583 | implementations, so strip it off if it exists. */ | |
584 | ||
585 | { | |
228e534f | 586 | char *command = elf_tdata (abfd)->core->command; |
72209a1f HPN |
587 | int n = strlen (command); |
588 | ||
589 | if (0 < n && command[n - 1] == ' ') | |
590 | command[n - 1] = '\0'; | |
591 | } | |
592 | ||
b34976b6 | 593 | return TRUE; |
72209a1f HPN |
594 | } |
595 | \f | |
915e5146 HPN |
596 | /* The name of the dynamic interpreter. This is put in the .interp |
597 | section. */ | |
598 | ||
599 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
600 | ||
601 | /* The size in bytes of an entry in the procedure linkage table. */ | |
602 | ||
603 | #define PLT_ENTRY_SIZE 20 | |
bac23f82 | 604 | #define PLT_ENTRY_SIZE_V32 26 |
915e5146 HPN |
605 | |
606 | /* The first entry in an absolute procedure linkage table looks like this. */ | |
607 | ||
608 | static const bfd_byte elf_cris_plt0_entry[PLT_ENTRY_SIZE] = | |
609 | { | |
610 | 0xfc, 0xe1, | |
cedb70c5 | 611 | 0x7e, 0x7e, /* push mof. */ |
915e5146 HPN |
612 | 0x7f, 0x0d, /* (dip [pc+]) */ |
613 | 0, 0, 0, 0, /* Replaced with address of .got + 4. */ | |
614 | 0x30, 0x7a, /* move [...],mof */ | |
615 | 0x7f, 0x0d, /* (dip [pc+]) */ | |
616 | 0, 0, 0, 0, /* Replaced with address of .got + 8. */ | |
bac23f82 HPN |
617 | 0x30, 0x09 /* jump [...] */ |
618 | }; | |
619 | ||
620 | static const bfd_byte elf_cris_plt0_entry_v32[PLT_ENTRY_SIZE_V32] = | |
621 | { | |
622 | 0x84, 0xe2, /* subq 4,$sp */ | |
623 | 0x6f, 0xfe, /* move.d 0,$acr */ | |
624 | 0, 0, 0, 0, /* Replaced by address of .got + 4. */ | |
625 | 0x7e, 0x7a, /* move $mof,[$sp] */ | |
626 | 0x3f, 0x7a, /* move [$acr],$mof */ | |
627 | 0x04, 0xf2, /* addq 4,acr */ | |
628 | 0x6f, 0xfa, /* move.d [$acr],$acr */ | |
629 | 0xbf, 0x09, /* jump $acr */ | |
630 | 0xb0, 0x05, /* nop */ | |
631 | 0, 0 /* Pad out to 26 bytes. */ | |
915e5146 HPN |
632 | }; |
633 | ||
634 | /* Subsequent entries in an absolute procedure linkage table look like | |
635 | this. */ | |
636 | ||
637 | static const bfd_byte elf_cris_plt_entry[PLT_ENTRY_SIZE] = | |
638 | { | |
639 | 0x7f, 0x0d, /* (dip [pc+]) */ | |
640 | 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */ | |
641 | 0x30, 0x09, /* jump [...] */ | |
642 | 0x3f, 0x7e, /* move [pc+],mof */ | |
643 | 0, 0, 0, 0, /* Replaced with offset into relocation table. */ | |
644 | 0x2f, 0xfe, /* add.d [pc+],pc */ | |
645 | 0xec, 0xff, | |
646 | 0xff, 0xff /* Replaced with offset to start of .plt. */ | |
647 | }; | |
648 | ||
bac23f82 HPN |
649 | static const bfd_byte elf_cris_plt_entry_v32[PLT_ENTRY_SIZE_V32] = |
650 | { | |
651 | 0x6f, 0xfe, /* move.d 0,$acr */ | |
652 | 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */ | |
653 | 0x6f, 0xfa, /* move.d [$acr],$acr */ | |
654 | 0xbf, 0x09, /* jump $acr */ | |
655 | 0xb0, 0x05, /* nop */ | |
656 | 0x3f, 0x7e, /* move 0,mof */ | |
657 | 0, 0, 0, 0, /* Replaced with offset into relocation table. */ | |
658 | 0xbf, 0x0e, /* ba start_of_plt0_entry */ | |
659 | 0, 0, 0, 0, /* Replaced with offset to plt0 entry. */ | |
660 | 0xb0, 0x05 /* nop */ | |
661 | }; | |
662 | ||
915e5146 HPN |
663 | /* The first entry in a PIC procedure linkage table looks like this. */ |
664 | ||
665 | static const bfd_byte elf_cris_pic_plt0_entry[PLT_ENTRY_SIZE] = | |
666 | { | |
667 | 0xfc, 0xe1, 0x7e, 0x7e, /* push mof */ | |
668 | 0x04, 0x01, 0x30, 0x7a, /* move [r0+4],mof */ | |
669 | 0x08, 0x01, 0x30, 0x09, /* jump [r0+8] */ | |
670 | 0, 0, 0, 0, 0, 0, 0, 0, /* Pad out to 20 bytes. */ | |
671 | }; | |
672 | ||
bac23f82 HPN |
673 | static const bfd_byte elf_cris_pic_plt0_entry_v32[PLT_ENTRY_SIZE_V32] = |
674 | { | |
675 | 0x84, 0xe2, /* subq 4,$sp */ | |
676 | 0x04, 0x01, /* addoq 4,$r0,$acr */ | |
677 | 0x7e, 0x7a, /* move $mof,[$sp] */ | |
678 | 0x3f, 0x7a, /* move [$acr],$mof */ | |
679 | 0x04, 0xf2, /* addq 4,$acr */ | |
680 | 0x6f, 0xfa, /* move.d [$acr],$acr */ | |
681 | 0xbf, 0x09, /* jump $acr */ | |
682 | 0xb0, 0x05, /* nop */ | |
683 | 0, 0, /* Pad out to 26 bytes. */ | |
684 | 0, 0, 0, 0, | |
685 | 0, 0, 0, 0 | |
686 | }; | |
687 | ||
915e5146 HPN |
688 | /* Subsequent entries in a PIC procedure linkage table look like this. */ |
689 | ||
690 | static const bfd_byte elf_cris_pic_plt_entry[PLT_ENTRY_SIZE] = | |
691 | { | |
692 | 0x6f, 0x0d, /* (bdap [pc+].d,r0) */ | |
693 | 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */ | |
694 | 0x30, 0x09, /* jump [...] */ | |
695 | 0x3f, 0x7e, /* move [pc+],mof */ | |
696 | 0, 0, 0, 0, /* Replaced with offset into relocation table. */ | |
697 | 0x2f, 0xfe, /* add.d [pc+],pc */ | |
698 | 0xec, 0xff, /* Replaced with offset to start of .plt. */ | |
699 | 0xff, 0xff | |
700 | }; | |
bac23f82 HPN |
701 | |
702 | static const bfd_byte elf_cris_pic_plt_entry_v32[PLT_ENTRY_SIZE_V32] = | |
703 | { | |
704 | 0x6f, 0x0d, /* addo.d 0,$r0,$acr */ | |
705 | 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */ | |
706 | 0x6f, 0xfa, /* move.d [$acr],$acr */ | |
707 | 0xbf, 0x09, /* jump $acr */ | |
708 | 0xb0, 0x05, /* nop */ | |
709 | 0x3f, 0x7e, /* move relocoffs,$mof */ | |
710 | 0, 0, 0, 0, /* Replaced with offset into relocation table. */ | |
711 | 0xbf, 0x0e, /* ba start_of_plt */ | |
712 | 0, 0, 0, 0, /* Replaced with offset to start of .plt. */ | |
713 | 0xb0, 0x05 /* nop */ | |
714 | }; | |
915e5146 HPN |
715 | \f |
716 | /* We copy elf32-m68k.c and elf32-i386.c for the basic linker hash bits | |
717 | (and most other PIC/shlib stuff). Check that we don't drift away | |
718 | without reason. | |
719 | ||
720 | The CRIS linker, like the m68k and i386 linkers (and probably the rest | |
721 | too) needs to keep track of the number of relocs that it decides to | |
722 | copy in check_relocs for each symbol. This is so that it can discard | |
723 | PC relative relocs if it doesn't need them when linking with | |
724 | -Bsymbolic. We store the information in a field extending the regular | |
725 | ELF linker hash table. */ | |
726 | ||
727 | /* This structure keeps track of the number of PC relative relocs we have | |
728 | copied for a given symbol. */ | |
729 | ||
730 | struct elf_cris_pcrel_relocs_copied | |
731 | { | |
732 | /* Next section. */ | |
733 | struct elf_cris_pcrel_relocs_copied *next; | |
0d08de41 | 734 | |
915e5146 HPN |
735 | /* A section in dynobj. */ |
736 | asection *section; | |
0d08de41 | 737 | |
915e5146 HPN |
738 | /* Number of relocs copied in this section. */ |
739 | bfd_size_type count; | |
0d08de41 HPN |
740 | |
741 | /* Example of reloc being copied, for message. */ | |
742 | enum elf_cris_reloc_type r_type; | |
915e5146 HPN |
743 | }; |
744 | ||
745 | /* CRIS ELF linker hash entry. */ | |
746 | ||
747 | struct elf_cris_link_hash_entry | |
748 | { | |
749 | struct elf_link_hash_entry root; | |
750 | ||
751 | /* Number of PC relative relocs copied for this symbol. */ | |
752 | struct elf_cris_pcrel_relocs_copied *pcrel_relocs_copied; | |
753 | ||
754 | /* The GOTPLT references are CRIS-specific; the goal is to avoid having | |
755 | both a general GOT and a PLT-specific GOT entry for the same symbol, | |
756 | when it is referenced both as a function and as a function pointer. | |
757 | ||
758 | Number of GOTPLT references for a function. */ | |
759 | bfd_signed_vma gotplt_refcount; | |
760 | ||
761 | /* Actual GOTPLT index for this symbol, if applicable, or zero if not | |
762 | (zero is never used as an index). FIXME: We should be able to fold | |
763 | this with gotplt_refcount in a union, like the got and plt unions in | |
764 | elf_link_hash_entry. */ | |
765 | bfd_size_type gotplt_offset; | |
100382c7 HPN |
766 | |
767 | /* The root.got.refcount is the sum of the regular reference counts | |
768 | (this) and those members below. We have to keep a separate count | |
769 | to track when we've found the first (or last) reference to a | |
770 | regular got entry. The offset is in root.got.offset. */ | |
771 | bfd_signed_vma reg_got_refcount; | |
772 | ||
773 | /* Similar to the above, the number of reloc references to this | |
774 | symbols that need a R_CRIS_32_TPREL slot. The offset is in | |
775 | root.got.offset, because this and .dtp_refcount can't validly | |
776 | happen when there's also a regular GOT entry; that's invalid | |
777 | input for which an error is emitted. */ | |
778 | bfd_signed_vma tprel_refcount; | |
779 | ||
780 | /* Similar to the above, the number of reloc references to this | |
781 | symbols that need a R_CRIS_DTP slot. The offset is in | |
782 | root.got.offset; plus 4 if .tprel_refcount > 0. */ | |
783 | bfd_signed_vma dtp_refcount; | |
915e5146 HPN |
784 | }; |
785 | ||
2c3fc389 NC |
786 | static bfd_boolean |
787 | elf_cris_discard_excess_dso_dynamics (struct elf_cris_link_hash_entry *, | |
788 | void * ); | |
789 | static bfd_boolean | |
790 | elf_cris_discard_excess_program_dynamics (struct elf_cris_link_hash_entry *, | |
791 | void *); | |
792 | ||
100382c7 HPN |
793 | /* The local_got_refcounts and local_got_offsets are a multiple of |
794 | LSNUM in size, namely LGOT_ALLOC_NELTS_FOR(LSNUM) (plus one for the | |
795 | refcount for GOT itself, see code), with the summary / group offset | |
796 | for local symbols located at offset N, reference counts for | |
797 | ordinary (address) relocs at offset N + LSNUM, for R_CRIS_DTP | |
798 | relocs at offset N + 2*LSNUM, and for R_CRIS_32_TPREL relocs at N + | |
799 | 3*LSNUM. */ | |
800 | ||
801 | #define LGOT_REG_NDX(x) ((x) + symtab_hdr->sh_info) | |
802 | #define LGOT_DTP_NDX(x) ((x) + 2 * symtab_hdr->sh_info) | |
803 | #define LGOT_TPREL_NDX(x) ((x) + 3 * symtab_hdr->sh_info) | |
804 | #define LGOT_ALLOC_NELTS_FOR(x) ((x) * 4) | |
805 | ||
915e5146 HPN |
806 | /* CRIS ELF linker hash table. */ |
807 | ||
808 | struct elf_cris_link_hash_table | |
809 | { | |
810 | struct elf_link_hash_table root; | |
811 | ||
812 | /* We can't use the PLT offset and calculate to get the GOTPLT offset, | |
813 | since we try and avoid creating GOTPLT:s when there's already a GOT. | |
814 | Instead, we keep and update the next available index here. */ | |
815 | bfd_size_type next_gotplt_entry; | |
100382c7 HPN |
816 | |
817 | /* The number of R_CRIS_32_DTPREL and R_CRIS_16_DTPREL that have | |
818 | been seen for any input; if != 0, then the constant-offset | |
819 | R_CRIS_DTPMOD is needed for this DSO/executable. This turns | |
820 | negative at relocation, so that we don't need an extra flag for | |
821 | when the reloc is output. */ | |
822 | bfd_signed_vma dtpmod_refcount; | |
915e5146 HPN |
823 | }; |
824 | ||
825 | /* Traverse a CRIS ELF linker hash table. */ | |
826 | ||
827 | #define elf_cris_link_hash_traverse(table, func, info) \ | |
828 | (elf_link_hash_traverse \ | |
829 | (&(table)->root, \ | |
4dfe6ac6 | 830 | (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
915e5146 HPN |
831 | (info))) |
832 | ||
833 | /* Get the CRIS ELF linker hash table from a link_info structure. */ | |
834 | ||
835 | #define elf_cris_hash_table(p) \ | |
4dfe6ac6 NC |
836 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
837 | == CRIS_ELF_DATA ? ((struct elf_cris_link_hash_table *) ((p)->hash)) : NULL) | |
915e5146 | 838 | |
100382c7 HPN |
839 | /* Get the CRIS ELF linker hash entry from a regular hash entry (the |
840 | "parent class"). The .root reference is just a simple type | |
841 | check on the argument. */ | |
842 | ||
843 | #define elf_cris_hash_entry(p) \ | |
844 | ((struct elf_cris_link_hash_entry *) (&(p)->root)) | |
845 | ||
915e5146 HPN |
846 | /* Create an entry in a CRIS ELF linker hash table. */ |
847 | ||
848 | static struct bfd_hash_entry * | |
4dfe6ac6 NC |
849 | elf_cris_link_hash_newfunc (struct bfd_hash_entry *entry, |
850 | struct bfd_hash_table *table, | |
851 | const char *string) | |
915e5146 HPN |
852 | { |
853 | struct elf_cris_link_hash_entry *ret = | |
854 | (struct elf_cris_link_hash_entry *) entry; | |
855 | ||
856 | /* Allocate the structure if it has not already been allocated by a | |
857 | subclass. */ | |
858 | if (ret == (struct elf_cris_link_hash_entry *) NULL) | |
859 | ret = ((struct elf_cris_link_hash_entry *) | |
860 | bfd_hash_allocate (table, | |
861 | sizeof (struct elf_cris_link_hash_entry))); | |
862 | if (ret == (struct elf_cris_link_hash_entry *) NULL) | |
863 | return (struct bfd_hash_entry *) ret; | |
864 | ||
865 | /* Call the allocation method of the superclass. */ | |
866 | ret = ((struct elf_cris_link_hash_entry *) | |
867 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
868 | table, string)); | |
869 | if (ret != (struct elf_cris_link_hash_entry *) NULL) | |
870 | { | |
871 | ret->pcrel_relocs_copied = NULL; | |
872 | ret->gotplt_refcount = 0; | |
873 | ret->gotplt_offset = 0; | |
100382c7 HPN |
874 | ret->dtp_refcount = 0; |
875 | ret->tprel_refcount = 0; | |
876 | ret->reg_got_refcount = 0; | |
915e5146 HPN |
877 | } |
878 | ||
879 | return (struct bfd_hash_entry *) ret; | |
880 | } | |
881 | ||
882 | /* Create a CRIS ELF linker hash table. */ | |
883 | ||
884 | static struct bfd_link_hash_table * | |
4dfe6ac6 | 885 | elf_cris_link_hash_table_create (bfd *abfd) |
915e5146 HPN |
886 | { |
887 | struct elf_cris_link_hash_table *ret; | |
dc810e39 | 888 | bfd_size_type amt = sizeof (struct elf_cris_link_hash_table); |
915e5146 | 889 | |
7bf52ea2 | 890 | ret = ((struct elf_cris_link_hash_table *) bfd_zmalloc (amt)); |
915e5146 HPN |
891 | if (ret == (struct elf_cris_link_hash_table *) NULL) |
892 | return NULL; | |
893 | ||
66eb6687 AM |
894 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
895 | elf_cris_link_hash_newfunc, | |
4dfe6ac6 NC |
896 | sizeof (struct elf_cris_link_hash_entry), |
897 | CRIS_ELF_DATA)) | |
915e5146 | 898 | { |
e2d34d7d | 899 | free (ret); |
915e5146 HPN |
900 | return NULL; |
901 | } | |
902 | ||
903 | /* Initialize to skip over the first three entries in the gotplt; they | |
904 | are used for run-time symbol evaluation. */ | |
905 | ret->next_gotplt_entry = 12; | |
906 | ||
907 | return &ret->root.root; | |
908 | } | |
909 | \f | |
06c15ad7 | 910 | /* Perform a single relocation. By default we use the standard BFD |
915e5146 | 911 | routines, with a few tweaks. */ |
06c15ad7 HPN |
912 | |
913 | static bfd_reloc_status_type | |
2c3fc389 NC |
914 | cris_final_link_relocate (reloc_howto_type * howto, |
915 | bfd * input_bfd, | |
916 | asection * input_section, | |
917 | bfd_byte * contents, | |
918 | Elf_Internal_Rela * rel, | |
919 | bfd_vma relocation) | |
06c15ad7 | 920 | { |
915e5146 | 921 | bfd_reloc_status_type r; |
100382c7 | 922 | enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info); |
915e5146 HPN |
923 | |
924 | /* PC-relative relocations are relative to the position *after* | |
925 | the reloc. Note that for R_CRIS_8_PCREL the adjustment is | |
926 | not a single byte, since PC must be 16-bit-aligned. */ | |
100382c7 | 927 | switch (r_type) |
915e5146 HPN |
928 | { |
929 | /* Check that the 16-bit GOT relocs are positive. */ | |
930 | case R_CRIS_16_GOTPLT: | |
931 | case R_CRIS_16_GOT: | |
932 | if ((bfd_signed_vma) relocation < 0) | |
933 | return bfd_reloc_overflow; | |
934 | break; | |
935 | ||
936 | case R_CRIS_32_PLT_PCREL: | |
937 | case R_CRIS_32_PCREL: | |
938 | relocation -= 2; | |
939 | /* Fall through. */ | |
940 | case R_CRIS_8_PCREL: | |
941 | case R_CRIS_16_PCREL: | |
942 | relocation -= 2; | |
943 | break; | |
944 | ||
945 | default: | |
946 | break; | |
947 | } | |
948 | ||
949 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
06c15ad7 HPN |
950 | contents, rel->r_offset, |
951 | relocation, rel->r_addend); | |
952 | return r; | |
953 | } | |
954 | \f | |
100382c7 HPN |
955 | |
956 | /* The number of errors left before we stop outputting reloc-specific | |
957 | explanatory messages. By coincidence, this works nicely together | |
958 | with the default number of messages you'll get from LD about | |
959 | "relocation truncated to fit" messages before you get an | |
960 | "additional relocation overflows omitted from the output". */ | |
961 | static int additional_relocation_error_msg_count = 10; | |
962 | ||
06c15ad7 HPN |
963 | /* Relocate an CRIS ELF section. See elf32-fr30.c, from where this was |
964 | copied, for further comments. */ | |
965 | ||
b34976b6 | 966 | static bfd_boolean |
4dfe6ac6 NC |
967 | cris_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED, |
968 | struct bfd_link_info *info, | |
969 | bfd *input_bfd, | |
970 | asection *input_section, | |
971 | bfd_byte *contents, | |
972 | Elf_Internal_Rela *relocs, | |
973 | Elf_Internal_Sym *local_syms, | |
974 | asection **local_sections) | |
06c15ad7 | 975 | { |
4dfe6ac6 | 976 | struct elf_cris_link_hash_table * htab; |
915e5146 | 977 | bfd *dynobj; |
b34976b6 AM |
978 | Elf_Internal_Shdr *symtab_hdr; |
979 | struct elf_link_hash_entry **sym_hashes; | |
915e5146 HPN |
980 | bfd_vma *local_got_offsets; |
981 | asection *sgot; | |
982 | asection *splt; | |
983 | asection *sreloc; | |
b34976b6 AM |
984 | Elf_Internal_Rela *rel; |
985 | Elf_Internal_Rela *relend; | |
100382c7 | 986 | asection *srelgot; |
06c15ad7 | 987 | |
4dfe6ac6 NC |
988 | htab = elf_cris_hash_table (info); |
989 | if (htab == NULL) | |
990 | return FALSE; | |
991 | ||
915e5146 HPN |
992 | dynobj = elf_hash_table (info)->dynobj; |
993 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
06c15ad7 HPN |
994 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; |
995 | sym_hashes = elf_sym_hashes (input_bfd); | |
996 | relend = relocs + input_section->reloc_count; | |
997 | ||
915e5146 HPN |
998 | sgot = NULL; |
999 | splt = NULL; | |
1000 | sreloc = NULL; | |
100382c7 | 1001 | srelgot = NULL; |
915e5146 HPN |
1002 | |
1003 | if (dynobj != NULL) | |
1004 | { | |
3d4d4302 AM |
1005 | splt = bfd_get_linker_section (dynobj, ".plt"); |
1006 | sgot = bfd_get_linker_section (dynobj, ".got"); | |
915e5146 HPN |
1007 | } |
1008 | ||
06c15ad7 HPN |
1009 | for (rel = relocs; rel < relend; rel ++) |
1010 | { | |
b34976b6 AM |
1011 | reloc_howto_type *howto; |
1012 | unsigned long r_symndx; | |
1013 | Elf_Internal_Sym *sym; | |
1014 | asection *sec; | |
1015 | struct elf_link_hash_entry *h; | |
1016 | bfd_vma relocation; | |
1017 | bfd_reloc_status_type r; | |
1018 | const char *symname = NULL; | |
100382c7 | 1019 | enum elf_cris_reloc_type r_type; |
a7c10850 | 1020 | |
06c15ad7 | 1021 | r_type = ELF32_R_TYPE (rel->r_info); |
a7c10850 | 1022 | |
06c15ad7 HPN |
1023 | if ( r_type == R_CRIS_GNU_VTINHERIT |
1024 | || r_type == R_CRIS_GNU_VTENTRY) | |
1025 | continue; | |
a7c10850 | 1026 | |
f0fe0e16 | 1027 | r_symndx = ELF32_R_SYM (rel->r_info); |
915e5146 | 1028 | howto = cris_elf_howto_table + r_type; |
06c15ad7 HPN |
1029 | h = NULL; |
1030 | sym = NULL; | |
1031 | sec = NULL; | |
a7c10850 | 1032 | |
06c15ad7 HPN |
1033 | if (r_symndx < symtab_hdr->sh_info) |
1034 | { | |
1035 | sym = local_syms + r_symndx; | |
1036 | sec = local_sections [r_symndx]; | |
8517fae7 | 1037 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
a7c10850 | 1038 | |
dc810e39 AM |
1039 | symname = (bfd_elf_string_from_elf_section |
1040 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
1041 | if (symname == NULL) | |
1042 | symname = bfd_section_name (input_bfd, sec); | |
06c15ad7 HPN |
1043 | } |
1044 | else | |
1045 | { | |
62d887d4 | 1046 | bfd_boolean warned, ignored; |
560e09e9 | 1047 | bfd_boolean unresolved_reloc; |
0a4787a0 | 1048 | |
b2a8e766 AM |
1049 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
1050 | r_symndx, symtab_hdr, sym_hashes, | |
1051 | h, sec, relocation, | |
62d887d4 | 1052 | unresolved_reloc, warned, ignored); |
915e5146 | 1053 | |
100382c7 HPN |
1054 | symname = h->root.root.string; |
1055 | ||
560e09e9 | 1056 | if (unresolved_reloc |
915e5146 HPN |
1057 | /* Perhaps we should detect the cases that |
1058 | sec->output_section is expected to be NULL like i386 and | |
1059 | m68k, but apparently (and according to elfxx-ia64.c) all | |
1060 | valid cases are where the symbol is defined in a shared | |
1061 | object which we link dynamically against. This includes | |
1062 | PLT relocs for which we've created a PLT entry and other | |
1063 | relocs for which we're prepared to create dynamic | |
1064 | relocations. | |
1065 | ||
1066 | For now, new situations cause us to just err when | |
1067 | sec->output_offset is NULL but the object with the symbol | |
1068 | is *not* dynamically linked against. Thus this will | |
1069 | automatically remind us so we can see if there are other | |
1070 | valid cases we need to revisit. */ | |
560e09e9 NC |
1071 | && (sec->owner->flags & DYNAMIC) != 0) |
1072 | relocation = 0; | |
1073 | ||
1074 | else if (h->root.type == bfd_link_hash_defined | |
1075 | || h->root.type == bfd_link_hash_defweak) | |
1076 | { | |
1077 | /* Here follow the cases where the relocation value must | |
1078 | be zero (or when further handling is simplified when | |
1079 | zero). I can't claim to understand the various | |
1080 | conditions and they weren't described in the files | |
1081 | where I copied them from (elf32-m68k.c and | |
1082 | elf32-i386.c), but let's mention examples of where | |
1083 | they happen. FIXME: Perhaps define and use a | |
1084 | dynamic_symbol_p function like ia64. | |
1085 | ||
1086 | - When creating a shared library, we can have an | |
1087 | ordinary relocation for a symbol defined in a shared | |
1088 | library (perhaps the one we create). We then make | |
1089 | the relocation value zero, as the value seen now will | |
1090 | be added into the relocation addend in this shared | |
1091 | library, but must be handled only at dynamic-link | |
1092 | time. FIXME: Not sure this example covers the | |
1093 | h->elf_link_hash_flags test, though it's there in | |
1094 | other targets. */ | |
1095 | if (info->shared | |
1096 | && ((! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1097 | || !h->def_regular) |
560e09e9 NC |
1098 | && (input_section->flags & SEC_ALLOC) != 0 |
1099 | && (r_type == R_CRIS_8 | |
1100 | || r_type == R_CRIS_16 | |
1101 | || r_type == R_CRIS_32 | |
1102 | || r_type == R_CRIS_8_PCREL | |
1103 | || r_type == R_CRIS_16_PCREL | |
1104 | || r_type == R_CRIS_32_PCREL)) | |
915e5146 | 1105 | relocation = 0; |
1d5316ab AM |
1106 | else if (!info->relocatable && unresolved_reloc |
1107 | && (_bfd_elf_section_offset (output_bfd, info, | |
1108 | input_section, | |
1109 | rel->r_offset) | |
1110 | != (bfd_vma) -1)) | |
915e5146 | 1111 | { |
560e09e9 | 1112 | _bfd_error_handler |
bac23f82 | 1113 | (_("%B, section %A: unresolvable relocation %s against symbol `%s'"), |
d003868e AM |
1114 | input_bfd, |
1115 | input_section, | |
8f615d07 | 1116 | cris_elf_howto_table[r_type].name, |
d003868e | 1117 | symname); |
915e5146 | 1118 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 1119 | return FALSE; |
915e5146 | 1120 | } |
06c15ad7 | 1121 | } |
06c15ad7 | 1122 | } |
a7c10850 | 1123 | |
dbaa2011 | 1124 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 1125 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 1126 | rel, 1, relend, howto, 0, contents); |
ab96bf03 AM |
1127 | |
1128 | if (info->relocatable) | |
1129 | continue; | |
1130 | ||
915e5146 | 1131 | switch (r_type) |
06c15ad7 | 1132 | { |
915e5146 HPN |
1133 | case R_CRIS_16_GOTPLT: |
1134 | case R_CRIS_32_GOTPLT: | |
1135 | /* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT, | |
1136 | but we require a PLT, and the PLT handling will take care of | |
1137 | filling in the PLT-specific GOT entry. For the GOT offset, | |
1138 | calculate it as we do when filling it in for the .got.plt | |
1139 | section. If we don't have a PLT, punt to GOT handling. */ | |
1140 | if (h != NULL | |
1141 | && ((struct elf_cris_link_hash_entry *) h)->gotplt_offset != 0) | |
06c15ad7 | 1142 | { |
915e5146 | 1143 | asection *sgotplt |
3d4d4302 | 1144 | = bfd_get_linker_section (dynobj, ".got.plt"); |
915e5146 | 1145 | bfd_vma got_offset; |
a7c10850 | 1146 | |
915e5146 HPN |
1147 | BFD_ASSERT (h->dynindx != -1); |
1148 | BFD_ASSERT (sgotplt != NULL); | |
a7c10850 | 1149 | |
915e5146 HPN |
1150 | got_offset |
1151 | = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset; | |
06c15ad7 | 1152 | |
915e5146 | 1153 | relocation = got_offset; |
06c15ad7 | 1154 | break; |
915e5146 | 1155 | } |
06c15ad7 | 1156 | |
4d96d128 | 1157 | /* We didn't make a PLT entry for this symbol. Maybe everything is |
915e5146 HPN |
1158 | folded into the GOT. Other than folding, this happens when |
1159 | statically linking PIC code, or when using -Bsymbolic. Check | |
1160 | that we instead have a GOT entry as done for us by | |
1161 | elf_cris_adjust_dynamic_symbol, and drop through into the | |
e4a2175c HPN |
1162 | ordinary GOT cases. This must not happen for the |
1163 | executable, because any reference it does to a function | |
1164 | that is satisfied by a DSO must generate a PLT. We assume | |
1165 | these call-specific relocs don't address non-functions. */ | |
1166 | if (h != NULL | |
1167 | && (h->got.offset == (bfd_vma) -1 | |
1168 | || (!info->shared | |
f5385ebf AM |
1169 | && !(h->def_regular |
1170 | || (!h->def_dynamic | |
1171 | && h->root.type == bfd_link_hash_undefweak))))) | |
915e5146 HPN |
1172 | { |
1173 | (*_bfd_error_handler) | |
e4a2175c | 1174 | ((h->got.offset == (bfd_vma) -1) |
bac23f82 | 1175 | ? _("%B, section %A: No PLT nor GOT for relocation %s" |
d003868e | 1176 | " against symbol `%s'") |
bac23f82 | 1177 | : _("%B, section %A: No PLT for relocation %s" |
d003868e AM |
1178 | " against symbol `%s'"), |
1179 | input_bfd, | |
1180 | input_section, | |
915e5146 | 1181 | cris_elf_howto_table[r_type].name, |
ada1953e HPN |
1182 | (symname != NULL && symname[0] != '\0' |
1183 | ? symname : _("[whose name is lost]"))); | |
915e5146 HPN |
1184 | |
1185 | /* FIXME: Perhaps blaming input is not the right thing to | |
1186 | do; this is probably an internal error. But it is true | |
1187 | that we didn't like that particular input. */ | |
1188 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1189 | return FALSE; |
915e5146 HPN |
1190 | } |
1191 | /* Fall through. */ | |
1192 | ||
1193 | /* The size of the actual relocation is not used here; we only | |
1194 | fill in the GOT table here. */ | |
1195 | case R_CRIS_16_GOT: | |
1196 | case R_CRIS_32_GOT: | |
1197 | { | |
1198 | bfd_vma off; | |
1199 | ||
1200 | /* Note that despite using RELA relocations, the .got contents | |
1201 | is always filled in with the link-relative relocation | |
1202 | value; the addend. */ | |
1203 | ||
1204 | if (h != NULL) | |
1205 | { | |
1206 | off = h->got.offset; | |
1207 | BFD_ASSERT (off != (bfd_vma) -1); | |
1208 | ||
1209 | if (!elf_hash_table (info)->dynamic_sections_created | |
205cfeb0 | 1210 | || (! info->shared |
f5385ebf | 1211 | && (h->def_regular |
e4a2175c | 1212 | || h->type == STT_FUNC |
f5385ebf | 1213 | || h->needs_plt)) |
915e5146 HPN |
1214 | || (info->shared |
1215 | && (info->symbolic || h->dynindx == -1) | |
f5385ebf | 1216 | && h->def_regular)) |
915e5146 | 1217 | { |
4d96d128 | 1218 | /* This wasn't checked above for ! info->shared, but |
e4a2175c HPN |
1219 | must hold there if we get here; the symbol must |
1220 | be defined in the regular program or be undefweak | |
1221 | or be a function or otherwise need a PLT. */ | |
6849c52f HPN |
1222 | BFD_ASSERT (!elf_hash_table (info)->dynamic_sections_created |
1223 | || info->shared | |
f5385ebf | 1224 | || h->def_regular |
e4a2175c | 1225 | || h->type == STT_FUNC |
f5385ebf | 1226 | || h->needs_plt |
6849c52f | 1227 | || h->root.type == bfd_link_hash_undefweak); |
4d96d128 | 1228 | |
915e5146 | 1229 | /* This is actually a static link, or it is a |
6849c52f HPN |
1230 | -Bsymbolic link and the symbol is defined locally, |
1231 | or is undefweak, or the symbol was forced to be | |
1232 | local because of a version file, or we're not | |
1233 | creating a dynamic object. We must initialize this | |
1234 | entry in the global offset table. Since the offset | |
1235 | must always be a multiple of 4, we use the least | |
1236 | significant bit to record whether we have | |
1237 | initialized it already. | |
1238 | ||
1239 | If this GOT entry should be runtime-initialized, we | |
1240 | will create a .rela.got relocation entry to | |
1241 | initialize the value. This is done in the | |
1242 | finish_dynamic_symbol routine. */ | |
915e5146 HPN |
1243 | if ((off & 1) != 0) |
1244 | off &= ~1; | |
1245 | else | |
1246 | { | |
1247 | bfd_put_32 (output_bfd, relocation, | |
1248 | sgot->contents + off); | |
1249 | h->got.offset |= 1; | |
1250 | } | |
1251 | } | |
1252 | } | |
1253 | else | |
1254 | { | |
1255 | BFD_ASSERT (local_got_offsets != NULL | |
1256 | && local_got_offsets[r_symndx] != (bfd_vma) -1); | |
1257 | ||
1258 | off = local_got_offsets[r_symndx]; | |
1259 | ||
1260 | /* The offset must always be a multiple of 4. We use | |
1261 | the least significant bit to record whether we have | |
1262 | already generated the necessary reloc. */ | |
1263 | if ((off & 1) != 0) | |
1264 | off &= ~1; | |
1265 | else | |
1266 | { | |
1267 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
1268 | ||
1269 | if (info->shared) | |
1270 | { | |
915e5146 | 1271 | Elf_Internal_Rela outrel; |
947216bf | 1272 | bfd_byte *loc; |
915e5146 | 1273 | |
100382c7 HPN |
1274 | if (srelgot == NULL) |
1275 | srelgot | |
3d4d4302 | 1276 | = bfd_get_linker_section (dynobj, ".rela.got"); |
100382c7 | 1277 | BFD_ASSERT (srelgot != NULL); |
915e5146 HPN |
1278 | |
1279 | outrel.r_offset = (sgot->output_section->vma | |
1280 | + sgot->output_offset | |
1281 | + off); | |
1282 | outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE); | |
1283 | outrel.r_addend = relocation; | |
100382c7 HPN |
1284 | loc = srelgot->contents; |
1285 | loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela); | |
947216bf | 1286 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
915e5146 HPN |
1287 | } |
1288 | ||
1289 | local_got_offsets[r_symndx] |= 1; | |
1290 | } | |
1291 | } | |
1292 | ||
1293 | relocation = sgot->output_offset + off; | |
1294 | if (rel->r_addend != 0) | |
1295 | { | |
1296 | /* We can't do anything for a relocation which is against | |
1297 | a symbol *plus offset*. GOT holds relocations for | |
1298 | symbols. Make this an error; the compiler isn't | |
1299 | allowed to pass us these kinds of things. */ | |
1300 | if (h == NULL) | |
1301 | (*_bfd_error_handler) | |
bac23f82 | 1302 | (_("%B, section %A: relocation %s with non-zero addend %d" |
d003868e AM |
1303 | " against local symbol"), |
1304 | input_bfd, | |
1305 | input_section, | |
915e5146 | 1306 | cris_elf_howto_table[r_type].name, |
d003868e | 1307 | rel->r_addend); |
915e5146 HPN |
1308 | else |
1309 | (*_bfd_error_handler) | |
bac23f82 | 1310 | (_("%B, section %A: relocation %s with non-zero addend %d" |
d003868e AM |
1311 | " against symbol `%s'"), |
1312 | input_bfd, | |
1313 | input_section, | |
915e5146 HPN |
1314 | cris_elf_howto_table[r_type].name, |
1315 | rel->r_addend, | |
d003868e | 1316 | symname[0] != '\0' ? symname : _("[whose name is lost]")); |
915e5146 HPN |
1317 | |
1318 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1319 | return FALSE; |
915e5146 HPN |
1320 | } |
1321 | } | |
1322 | break; | |
06c15ad7 | 1323 | |
915e5146 | 1324 | case R_CRIS_32_GOTREL: |
3dab95d3 HPN |
1325 | /* This relocation must only be performed against local symbols. |
1326 | It's also ok when we link a program and the symbol is either | |
1327 | defined in an ordinary (non-DSO) object or is undefined weak. */ | |
1328 | if (h != NULL | |
1329 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
1330 | && !(!info->shared | |
f5385ebf AM |
1331 | && (h->def_regular |
1332 | || (!h->def_dynamic | |
3dab95d3 | 1333 | && h->root.type == bfd_link_hash_undefweak)))) |
915e5146 HPN |
1334 | { |
1335 | (*_bfd_error_handler) | |
bac23f82 HPN |
1336 | (_("%B, section %A: relocation %s is" |
1337 | " not allowed for global symbol: `%s'"), | |
d003868e AM |
1338 | input_bfd, |
1339 | input_section, | |
915e5146 | 1340 | cris_elf_howto_table[r_type].name, |
d003868e | 1341 | symname); |
915e5146 | 1342 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 1343 | return FALSE; |
06c15ad7 HPN |
1344 | } |
1345 | ||
58255df3 HPN |
1346 | /* This can happen if we get a link error with the input ELF |
1347 | variant mismatching the output variant. Emit an error so | |
1348 | it's noticed if it happens elsewhere. */ | |
1349 | if (sgot == NULL) | |
1350 | { | |
1351 | (*_bfd_error_handler) | |
bac23f82 | 1352 | (_("%B, section %A: relocation %s with no GOT created"), |
d003868e AM |
1353 | input_bfd, |
1354 | input_section, | |
1355 | cris_elf_howto_table[r_type].name); | |
58255df3 | 1356 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 1357 | return FALSE; |
58255df3 HPN |
1358 | } |
1359 | ||
915e5146 HPN |
1360 | /* This relocation is like a PC-relative one, except the |
1361 | reference point is the location of GOT. Note that | |
1362 | sgot->output_offset is not involved in this calculation. We | |
1363 | always want the start of entire .got section, not the | |
1364 | position after the reserved header. */ | |
1365 | relocation -= sgot->output_section->vma; | |
1366 | break; | |
06c15ad7 | 1367 | |
915e5146 HPN |
1368 | case R_CRIS_32_PLT_PCREL: |
1369 | /* Relocation is to the entry for this symbol in the | |
1370 | procedure linkage table. */ | |
06c15ad7 | 1371 | |
915e5146 HPN |
1372 | /* Resolve a PLT_PCREL reloc against a local symbol directly, |
1373 | without using the procedure linkage table. */ | |
0a4787a0 | 1374 | if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
915e5146 HPN |
1375 | break; |
1376 | ||
1377 | if (h->plt.offset == (bfd_vma) -1 | |
1378 | || splt == NULL) | |
1379 | { | |
1380 | /* We didn't make a PLT entry for this symbol. This | |
1381 | happens when statically linking PIC code, or when | |
1382 | using -Bsymbolic. */ | |
1383 | break; | |
1384 | } | |
1385 | ||
1386 | relocation = (splt->output_section->vma | |
1387 | + splt->output_offset | |
1388 | + h->plt.offset); | |
1389 | break; | |
1390 | ||
1391 | case R_CRIS_32_PLT_GOTREL: | |
1392 | /* Like R_CRIS_32_PLT_PCREL, but the reference point is the | |
1393 | start of the .got section. See also comment at | |
1394 | R_CRIS_32_GOT. */ | |
1395 | relocation -= sgot->output_section->vma; | |
1396 | ||
1397 | /* Resolve a PLT_GOTREL reloc against a local symbol directly, | |
1398 | without using the procedure linkage table. */ | |
0a4787a0 | 1399 | if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
915e5146 HPN |
1400 | break; |
1401 | ||
1402 | if (h->plt.offset == (bfd_vma) -1 | |
1403 | || splt == NULL) | |
1404 | { | |
1405 | /* We didn't make a PLT entry for this symbol. This | |
1406 | happens when statically linking PIC code, or when | |
1407 | using -Bsymbolic. */ | |
1408 | break; | |
1409 | } | |
1410 | ||
1411 | relocation = (splt->output_section->vma | |
1412 | + splt->output_offset | |
1413 | + h->plt.offset | |
1414 | - sgot->output_section->vma); | |
1415 | break; | |
1416 | ||
1417 | case R_CRIS_8_PCREL: | |
1418 | case R_CRIS_16_PCREL: | |
1419 | case R_CRIS_32_PCREL: | |
1420 | /* If the symbol was local, we need no shlib-specific handling. */ | |
0d08de41 HPN |
1421 | if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
1422 | || h->dynindx == -1) | |
915e5146 HPN |
1423 | break; |
1424 | ||
1425 | /* Fall through. */ | |
1426 | case R_CRIS_8: | |
1427 | case R_CRIS_16: | |
1428 | case R_CRIS_32: | |
1429 | if (info->shared | |
cf35638d | 1430 | && r_symndx != STN_UNDEF |
915e5146 HPN |
1431 | && (input_section->flags & SEC_ALLOC) != 0 |
1432 | && ((r_type != R_CRIS_8_PCREL | |
1433 | && r_type != R_CRIS_16_PCREL | |
1434 | && r_type != R_CRIS_32_PCREL) | |
1435 | || (!info->symbolic | |
02865b8e | 1436 | || (h != NULL && !h->def_regular)))) |
915e5146 HPN |
1437 | { |
1438 | Elf_Internal_Rela outrel; | |
947216bf | 1439 | bfd_byte *loc; |
b34976b6 | 1440 | bfd_boolean skip, relocate; |
915e5146 HPN |
1441 | |
1442 | /* When generating a shared object, these relocations | |
1443 | are copied into the output file to be resolved at run | |
1444 | time. */ | |
1445 | ||
1446 | if (sreloc == NULL) | |
1447 | { | |
83bac4b0 | 1448 | sreloc = _bfd_elf_get_dynamic_reloc_section |
e236b51d | 1449 | (dynobj, input_section, /*rela?*/ TRUE); |
83bac4b0 NC |
1450 | /* The section should have been created in cris_elf_check_relocs, |
1451 | but that function will not be called for objects which fail in | |
915e5146 HPN |
1452 | cris_elf_merge_private_bfd_data. */ |
1453 | if (sreloc == NULL) | |
1454 | { | |
915e5146 | 1455 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 1456 | return FALSE; |
915e5146 HPN |
1457 | } |
1458 | } | |
1459 | ||
b34976b6 AM |
1460 | skip = FALSE; |
1461 | relocate = FALSE; | |
915e5146 | 1462 | |
c629eae0 JJ |
1463 | outrel.r_offset = |
1464 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
1465 | rel->r_offset); | |
1466 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 1467 | skip = TRUE; |
b3bf42d8 HPN |
1468 | else if (outrel.r_offset == (bfd_vma) -2 |
1469 | /* For now, undefined weak symbols with non-default | |
1470 | visibility (yielding 0), like exception info for | |
1471 | discarded sections, will get a R_CRIS_NONE | |
1472 | relocation rather than no relocation, because we | |
1473 | notice too late that the symbol doesn't need a | |
1474 | relocation. */ | |
1475 | || (h != NULL | |
1476 | && h->root.type == bfd_link_hash_undefweak | |
1477 | && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)) | |
b34976b6 | 1478 | skip = TRUE, relocate = TRUE; |
915e5146 HPN |
1479 | outrel.r_offset += (input_section->output_section->vma |
1480 | + input_section->output_offset); | |
1481 | ||
1482 | if (skip) | |
0bb2d96a | 1483 | memset (&outrel, 0, sizeof outrel); |
915e5146 HPN |
1484 | /* h->dynindx may be -1 if the symbol was marked to |
1485 | become local. */ | |
1486 | else if (h != NULL | |
1487 | && ((! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1488 | || !h->def_regular)) |
915e5146 HPN |
1489 | { |
1490 | BFD_ASSERT (h->dynindx != -1); | |
915e5146 HPN |
1491 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
1492 | outrel.r_addend = relocation + rel->r_addend; | |
1493 | } | |
1494 | else | |
1495 | { | |
74541ad4 AM |
1496 | outrel.r_addend = relocation + rel->r_addend; |
1497 | ||
915e5146 HPN |
1498 | if (r_type == R_CRIS_32) |
1499 | { | |
b34976b6 | 1500 | relocate = TRUE; |
915e5146 | 1501 | outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE); |
915e5146 HPN |
1502 | } |
1503 | else | |
1504 | { | |
1505 | long indx; | |
1506 | ||
8517fae7 | 1507 | if (bfd_is_abs_section (sec)) |
915e5146 HPN |
1508 | indx = 0; |
1509 | else if (sec == NULL || sec->owner == NULL) | |
1510 | { | |
1511 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1512 | return FALSE; |
915e5146 HPN |
1513 | } |
1514 | else | |
1515 | { | |
1516 | asection *osec; | |
1517 | ||
74541ad4 AM |
1518 | /* We are turning this relocation into one |
1519 | against a section symbol. It would be | |
1520 | proper to subtract the symbol's value, | |
1521 | osec->vma, from the emitted reloc addend, | |
1522 | but ld.so expects buggy relocs. */ | |
915e5146 HPN |
1523 | osec = sec->output_section; |
1524 | indx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
1525 | if (indx == 0) |
1526 | { | |
74541ad4 AM |
1527 | osec = htab->root.text_index_section; |
1528 | indx = elf_section_data (osec)->dynindx; | |
1529 | } | |
1530 | BFD_ASSERT (indx != 0); | |
915e5146 HPN |
1531 | } |
1532 | ||
915e5146 | 1533 | outrel.r_info = ELF32_R_INFO (indx, r_type); |
915e5146 HPN |
1534 | } |
1535 | } | |
1536 | ||
947216bf AM |
1537 | loc = sreloc->contents; |
1538 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
1539 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
915e5146 HPN |
1540 | |
1541 | /* This reloc will be computed at runtime, so there's no | |
1542 | need to do anything now, except for R_CRIS_32 relocations | |
1543 | that have been turned into R_CRIS_RELATIVE. */ | |
1544 | if (!relocate) | |
1545 | continue; | |
1546 | } | |
1547 | ||
1548 | break; | |
100382c7 HPN |
1549 | |
1550 | case R_CRIS_16_DTPREL: | |
1551 | case R_CRIS_32_DTPREL: | |
1552 | /* This relocation must only be performed against local | |
6718f446 HPN |
1553 | symbols, or to sections that are not loadable. It's also |
1554 | ok when we link a program and the symbol is defined in an | |
1555 | ordinary (non-DSO) object (if it's undefined there, we've | |
1556 | already seen an error). */ | |
100382c7 | 1557 | if (h != NULL |
6718f446 | 1558 | && (input_section->flags & SEC_ALLOC) != 0 |
100382c7 HPN |
1559 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
1560 | && (info->shared | |
1561 | || (!h->def_regular | |
1562 | && h->root.type != bfd_link_hash_undefined))) | |
1563 | { | |
1564 | (*_bfd_error_handler) | |
1565 | ((h->root.type == bfd_link_hash_undefined) | |
1566 | /* We shouldn't get here for GCC-emitted code. */ | |
1567 | ? _("%B, section %A: relocation %s has an undefined" | |
1568 | " reference to `%s', perhaps a declaration mixup?") | |
1569 | : ("%B, section %A: relocation %s is" | |
1570 | " not allowed for `%s', a global symbol with default" | |
1571 | " visibility, perhaps a declaration mixup?"), | |
1572 | input_bfd, | |
1573 | input_section, | |
1574 | cris_elf_howto_table[r_type].name, | |
1575 | symname != NULL && symname[0] != '\0' | |
1576 | ? symname : _("[whose name is lost]")); | |
1577 | bfd_set_error (bfd_error_bad_value); | |
1578 | return FALSE; | |
1579 | } | |
1580 | ||
6718f446 | 1581 | BFD_ASSERT ((input_section->flags & SEC_ALLOC) == 0 |
4dfe6ac6 | 1582 | || htab->dtpmod_refcount != 0); |
100382c7 HPN |
1583 | |
1584 | /* Fill in a R_CRIS_DTPMOD reloc at offset 3 if we haven't | |
1585 | already done so. Note that we do this in .got.plt, not | |
1586 | in .got, as .got.plt contains the first part, still the | |
1587 | reloc is against .got, because the linker script directs | |
1588 | (is required to direct) them both into .got. */ | |
4dfe6ac6 | 1589 | if (htab->dtpmod_refcount > 0 |
6718f446 | 1590 | && (input_section->flags & SEC_ALLOC) != 0) |
100382c7 | 1591 | { |
3d4d4302 | 1592 | asection *sgotplt = bfd_get_linker_section (dynobj, ".got.plt"); |
100382c7 HPN |
1593 | BFD_ASSERT (sgotplt != NULL); |
1594 | ||
1595 | if (info->shared) | |
1596 | { | |
1597 | Elf_Internal_Rela outrel; | |
1598 | bfd_byte *loc; | |
1599 | ||
1600 | if (srelgot == NULL) | |
3d4d4302 | 1601 | srelgot = bfd_get_linker_section (dynobj, ".rela.got"); |
100382c7 HPN |
1602 | BFD_ASSERT (srelgot != NULL); |
1603 | loc = srelgot->contents; | |
1604 | loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela); | |
1605 | ||
1606 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 12); | |
1607 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16); | |
1608 | outrel.r_offset = (sgotplt->output_section->vma | |
1609 | + sgotplt->output_offset | |
1610 | + 12); | |
1611 | outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTPMOD); | |
1612 | outrel.r_addend = 0; | |
1613 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
1614 | } | |
1615 | else | |
1616 | { | |
1617 | /* For an executable, the GOT entry contents is known. */ | |
1618 | bfd_put_32 (output_bfd, (bfd_vma) 1, sgotplt->contents + 12); | |
1619 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16); | |
1620 | } | |
1621 | ||
1622 | /* Reverse the sign to mark that we've emitted the | |
1623 | required GOT entry. */ | |
4dfe6ac6 | 1624 | htab->dtpmod_refcount = - htab->dtpmod_refcount; |
100382c7 HPN |
1625 | } |
1626 | ||
ebf275e3 HPN |
1627 | /* The relocation is the offset from the start of the module |
1628 | TLS block to the (local) symbol. */ | |
100382c7 | 1629 | relocation -= elf_hash_table (info)->tls_sec == NULL |
ebf275e3 | 1630 | ? 0 : elf_hash_table (info)->tls_sec->vma; |
100382c7 HPN |
1631 | break; |
1632 | ||
1633 | case R_CRIS_32_GD: | |
1634 | if (info->shared) | |
1635 | { | |
1636 | bfd_set_error (bfd_error_invalid_operation); | |
1637 | ||
1638 | /* We've already informed in cris_elf_check_relocs that | |
1639 | this is an error. */ | |
1640 | return FALSE; | |
1641 | } | |
1642 | /* Fall through. */ | |
1643 | ||
1644 | case R_CRIS_16_GOT_GD: | |
1645 | case R_CRIS_32_GOT_GD: | |
1646 | if (rel->r_addend != 0) | |
1647 | { | |
1648 | /* We can't do anything for a relocation which is against a | |
1649 | symbol *plus offset*. The GOT holds relocations for | |
1650 | symbols. Make this an error; the compiler isn't allowed | |
1651 | to pass us these kinds of things. */ | |
1652 | (*_bfd_error_handler) | |
1653 | (_("%B, section %A: relocation %s with non-zero addend %d" | |
1654 | " against symbol `%s'"), | |
1655 | input_bfd, | |
1656 | input_section, | |
1657 | cris_elf_howto_table[r_type].name, | |
1658 | rel->r_addend, | |
1659 | symname[0] != '\0' ? symname : _("[whose name is lost]")); | |
1660 | ||
1661 | bfd_set_error (bfd_error_bad_value); | |
1662 | return FALSE; | |
1663 | } | |
1664 | ||
34d3d6b9 HPN |
1665 | if (!info->shared |
1666 | && (h == NULL || h->def_regular || ELF_COMMON_DEF_P (h))) | |
100382c7 HPN |
1667 | { |
1668 | /* Known contents of the GOT. */ | |
1669 | bfd_vma off; | |
1670 | ||
1671 | /* The symbol is defined in the program, so just write | |
019c5a2e | 1672 | (1, known_tpoffset) into the GOT. */ |
100382c7 HPN |
1673 | relocation -= elf_hash_table (info)->tls_sec->vma; |
1674 | ||
1675 | if (h != NULL) | |
1676 | { | |
1677 | off = elf_cris_hash_entry (h)->tprel_refcount > 0 | |
1678 | ? h->got.offset + 4 : h->got.offset; | |
1679 | } | |
1680 | else | |
1681 | { | |
1682 | off = local_got_offsets[r_symndx]; | |
1683 | if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)]) | |
1684 | off += 4; | |
1685 | } | |
1686 | ||
1687 | /* We use bit 1 of the offset as a flag for GOT entry with | |
1688 | the R_CRIS_DTP reloc, setting it when we've emitted the | |
1689 | GOT entry and reloc. Bit 0 is used for R_CRIS_32_TPREL | |
1690 | relocs. */ | |
1691 | if ((off & 2) == 0) | |
1692 | { | |
1693 | off &= ~3; | |
1694 | ||
1695 | if (h != NULL) | |
1696 | h->got.offset |= 2; | |
1697 | else | |
1698 | local_got_offsets[r_symndx] |= 2; | |
1699 | ||
1700 | bfd_put_32 (output_bfd, 1, sgot->contents + off); | |
1701 | bfd_put_32 (output_bfd, relocation, sgot->contents + off + 4); | |
1702 | } | |
1703 | else | |
1704 | off &= ~3; | |
1705 | ||
1706 | relocation = sgot->output_offset + off | |
1707 | + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0); | |
1708 | } | |
1709 | else | |
1710 | { | |
1711 | /* Not all parts of the GOT entry are known; emit a real | |
1712 | relocation. */ | |
1713 | bfd_vma off; | |
1714 | ||
1715 | if (h != NULL) | |
1716 | off = elf_cris_hash_entry (h)->tprel_refcount > 0 | |
1717 | ? h->got.offset + 4 : h->got.offset; | |
1718 | else | |
1719 | { | |
1720 | off = local_got_offsets[r_symndx]; | |
1721 | if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)]) | |
1722 | off += 4; | |
1723 | } | |
1724 | ||
1725 | /* See above re bit 1 and bit 0 usage. */ | |
1726 | if ((off & 2) == 0) | |
1727 | { | |
1728 | Elf_Internal_Rela outrel; | |
1729 | bfd_byte *loc; | |
1730 | ||
1731 | off &= ~3; | |
1732 | ||
1733 | if (h != NULL) | |
1734 | h->got.offset |= 2; | |
1735 | else | |
1736 | local_got_offsets[r_symndx] |= 2; | |
1737 | ||
1738 | /* Clear the target contents of the GOT (just as a | |
1739 | gesture; it's already cleared on allocation): this | |
1740 | relocation is not like the other dynrelocs. */ | |
1741 | bfd_put_32 (output_bfd, 0, sgot->contents + off); | |
1742 | bfd_put_32 (output_bfd, 0, sgot->contents + off + 4); | |
1743 | ||
1744 | if (srelgot == NULL) | |
3d4d4302 | 1745 | srelgot = bfd_get_linker_section (dynobj, ".rela.got"); |
100382c7 HPN |
1746 | BFD_ASSERT (srelgot != NULL); |
1747 | ||
1748 | if (h != NULL && h->dynindx != -1) | |
1749 | { | |
1750 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_DTP); | |
1751 | relocation = 0; | |
1752 | } | |
1753 | else | |
1754 | { | |
1755 | outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTP); | |
1756 | ||
1757 | /* NULL if we had an error. */ | |
1758 | relocation -= elf_hash_table (info)->tls_sec == NULL | |
1759 | ? 0 : elf_hash_table (info)->tls_sec->vma; | |
1760 | } | |
1761 | ||
1762 | outrel.r_offset = (sgot->output_section->vma | |
1763 | + sgot->output_offset | |
1764 | + off); | |
1765 | outrel.r_addend = relocation; | |
1766 | loc = srelgot->contents; | |
1767 | loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela); | |
1768 | ||
1769 | /* NULL if we had an error. */ | |
1770 | if (srelgot->contents != NULL) | |
1771 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
1772 | } | |
1773 | else | |
1774 | off &= ~3; | |
1775 | ||
1776 | relocation = sgot->output_offset + off | |
1777 | + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0); | |
1778 | } | |
1779 | ||
1780 | /* The GOT-relative offset to the GOT entry is the | |
1781 | relocation, or for R_CRIS_32_GD, the actual address of | |
1782 | the GOT entry. */ | |
1783 | break; | |
1784 | ||
75f500d7 HPN |
1785 | case R_CRIS_32_IE: |
1786 | if (info->shared) | |
1787 | { | |
1788 | bfd_set_error (bfd_error_invalid_operation); | |
1789 | ||
1790 | /* We've already informed in cris_elf_check_relocs that | |
1791 | this is an error. */ | |
1792 | return FALSE; | |
1793 | } | |
1794 | /* Fall through. */ | |
1795 | ||
100382c7 HPN |
1796 | case R_CRIS_32_GOT_TPREL: |
1797 | case R_CRIS_16_GOT_TPREL: | |
1798 | if (rel->r_addend != 0) | |
1799 | { | |
1800 | /* We can't do anything for a relocation which is | |
1801 | against a symbol *plus offset*. GOT holds | |
1802 | relocations for symbols. Make this an error; the | |
1803 | compiler isn't allowed to pass us these kinds of | |
1804 | things. */ | |
1805 | (*_bfd_error_handler) | |
1806 | (_("%B, section %A: relocation %s with non-zero addend %d" | |
1807 | " against symbol `%s'"), | |
1808 | input_bfd, | |
1809 | input_section, | |
1810 | cris_elf_howto_table[r_type].name, | |
1811 | rel->r_addend, | |
1812 | symname[0] != '\0' ? symname : _("[whose name is lost]")); | |
1813 | bfd_set_error (bfd_error_bad_value); | |
1814 | return FALSE; | |
1815 | } | |
1816 | ||
26a48bb3 HPN |
1817 | if (!info->shared |
1818 | && (h == NULL || h->def_regular || ELF_COMMON_DEF_P (h))) | |
100382c7 HPN |
1819 | { |
1820 | /* Known contents of the GOT. */ | |
1821 | bfd_vma off; | |
1822 | ||
1823 | /* The symbol is defined in the program, so just write | |
1bc86aea | 1824 | the -prog_tls_size+known_tpoffset into the GOT. */ |
100382c7 | 1825 | relocation -= elf_hash_table (info)->tls_sec->vma; |
f6f05983 | 1826 | relocation -= elf_hash_table (info)->tls_size; |
100382c7 HPN |
1827 | |
1828 | if (h != NULL) | |
1829 | off = h->got.offset; | |
1830 | else | |
1831 | off = local_got_offsets[r_symndx]; | |
1832 | ||
1833 | /* Bit 0 is used to mark whether we've emitted the required | |
1834 | entry (and if needed R_CRIS_32_TPREL reloc). Bit 1 | |
1835 | is used similarly for R_CRIS_DTP, see above. */ | |
1836 | if ((off & 1) == 0) | |
1837 | { | |
1838 | off &= ~3; | |
1839 | ||
1840 | if (h != NULL) | |
1841 | h->got.offset |= 1; | |
1842 | else | |
1843 | local_got_offsets[r_symndx] |= 1; | |
1844 | ||
1845 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
1846 | } | |
1847 | else | |
1848 | off &= ~3; | |
1849 | ||
75f500d7 HPN |
1850 | relocation = sgot->output_offset + off |
1851 | + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0); | |
100382c7 HPN |
1852 | } |
1853 | else | |
1854 | { | |
1855 | /* Emit a real relocation. */ | |
1856 | bfd_vma off; | |
1857 | ||
1858 | if (h != NULL) | |
1859 | off = h->got.offset; | |
1860 | else | |
1861 | off = local_got_offsets[r_symndx]; | |
1862 | ||
1863 | /* See above re usage of bit 0 and 1. */ | |
1864 | if ((off & 1) == 0) | |
1865 | { | |
1866 | Elf_Internal_Rela outrel; | |
1867 | bfd_byte *loc; | |
1868 | ||
1869 | off &= ~3; | |
1870 | ||
1871 | if (h != NULL) | |
1872 | h->got.offset |= 1; | |
1873 | else | |
1874 | local_got_offsets[r_symndx] |= 1; | |
1875 | ||
1876 | if (srelgot == NULL) | |
3d4d4302 | 1877 | srelgot = bfd_get_linker_section (dynobj, ".rela.got"); |
100382c7 HPN |
1878 | BFD_ASSERT (srelgot != NULL); |
1879 | ||
1880 | if (h != NULL && h->dynindx != -1) | |
1881 | { | |
1882 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_32_TPREL); | |
1883 | relocation = 0; | |
1884 | } | |
1885 | else | |
1886 | { | |
1887 | outrel.r_info = ELF32_R_INFO (0, R_CRIS_32_TPREL); | |
1888 | ||
1889 | /* NULL if we had an error. */ | |
1890 | relocation -= elf_hash_table (info)->tls_sec == NULL | |
1891 | ? 0 : elf_hash_table (info)->tls_sec->vma; | |
1892 | } | |
1893 | ||
1894 | /* Just "define" the initial contents in some | |
1895 | semi-logical way. */ | |
1896 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
1897 | ||
1898 | outrel.r_offset = (sgot->output_section->vma | |
1899 | + sgot->output_offset | |
1900 | + off); | |
1901 | outrel.r_addend = relocation; | |
1902 | loc = srelgot->contents; | |
1903 | loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela); | |
1904 | /* NULL if we had an error. */ | |
1905 | if (srelgot->contents != NULL) | |
1906 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
1907 | } | |
1908 | else | |
1909 | off &= ~3; | |
1910 | ||
75f500d7 HPN |
1911 | relocation = sgot->output_offset + off |
1912 | + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0); | |
100382c7 HPN |
1913 | } |
1914 | ||
75f500d7 HPN |
1915 | /* The GOT-relative offset to the GOT entry is the relocation, |
1916 | or for R_CRIS_32_GD, the actual address of the GOT entry. */ | |
100382c7 HPN |
1917 | break; |
1918 | ||
1919 | case R_CRIS_16_TPREL: | |
1920 | case R_CRIS_32_TPREL: | |
1921 | /* This relocation must only be performed against symbols | |
1922 | defined in an ordinary (non-DSO) object. */ | |
1923 | if (info->shared) | |
1924 | { | |
1925 | bfd_set_error (bfd_error_invalid_operation); | |
1926 | ||
1927 | /* We've already informed in cris_elf_check_relocs that | |
1928 | this is an error. */ | |
1929 | return FALSE; | |
1930 | } | |
1931 | ||
1932 | if (h != NULL | |
1933 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
34d3d6b9 | 1934 | && !(h->def_regular || ELF_COMMON_DEF_P (h)) |
100382c7 HPN |
1935 | /* If it's undefined, then an error message has already |
1936 | been emitted. */ | |
1937 | && h->root.type != bfd_link_hash_undefined) | |
1938 | { | |
1939 | (*_bfd_error_handler) | |
1940 | (_("%B, section %A: relocation %s is" | |
1941 | " not allowed for symbol: `%s'" | |
1942 | " which is defined outside the program," | |
1943 | " perhaps a declaration mixup?"), | |
1944 | input_bfd, | |
1945 | input_section, | |
1946 | cris_elf_howto_table[r_type].name, | |
1947 | symname); | |
1948 | bfd_set_error (bfd_error_bad_value); | |
1949 | return FALSE; | |
1950 | } | |
1951 | ||
1952 | /* NULL if we had an error. */ | |
1953 | relocation -= elf_hash_table (info)->tls_sec == NULL | |
1bc86aea HPN |
1954 | ? 0 |
1955 | : (elf_hash_table (info)->tls_sec->vma | |
f6f05983 | 1956 | + elf_hash_table (info)->tls_size); |
100382c7 HPN |
1957 | |
1958 | /* The TLS-relative offset is the relocation. */ | |
1959 | break; | |
1960 | ||
1961 | default: | |
1962 | BFD_FAIL (); | |
1963 | return FALSE; | |
915e5146 HPN |
1964 | } |
1965 | ||
1966 | r = cris_final_link_relocate (howto, input_bfd, input_section, | |
1967 | contents, rel, relocation); | |
1968 | ||
1969 | if (r != bfd_reloc_ok) | |
1970 | { | |
1971 | const char * msg = (const char *) NULL; | |
1972 | ||
1973 | switch (r) | |
1974 | { | |
1975 | case bfd_reloc_overflow: | |
1976 | r = info->callbacks->reloc_overflow | |
dfeffb9f L |
1977 | (info, (h ? &h->root : NULL), symname, howto->name, |
1978 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
100382c7 HPN |
1979 | if (additional_relocation_error_msg_count > 0) |
1980 | { | |
1981 | additional_relocation_error_msg_count--; | |
1982 | switch (r_type) | |
1983 | { | |
1984 | case R_CRIS_16_GOTPLT: | |
1985 | case R_CRIS_16_GOT: | |
1986 | ||
1987 | /* Not just TLS is involved here, so we make | |
1988 | generation and message depend on -fPIC/-fpic | |
1989 | only. */ | |
1990 | case R_CRIS_16_GOT_TPREL: | |
1991 | case R_CRIS_16_GOT_GD: | |
1992 | (*_bfd_error_handler) | |
1993 | (_("(too many global variables for -fpic:" | |
1994 | " recompile with -fPIC)")); | |
1995 | break; | |
1996 | ||
1997 | case R_CRIS_16_TPREL: | |
1998 | case R_CRIS_16_DTPREL: | |
1999 | (*_bfd_error_handler) | |
2000 | (_("(thread-local data too big for -fpic or" | |
2001 | " -msmall-tls: recompile with -fPIC or" | |
2002 | " -mno-small-tls)")); | |
2003 | break; | |
2004 | ||
2005 | /* No known cause for overflow for other relocs. */ | |
2006 | default: | |
2007 | break; | |
2008 | } | |
2009 | } | |
915e5146 HPN |
2010 | break; |
2011 | ||
2012 | case bfd_reloc_undefined: | |
2013 | r = info->callbacks->undefined_symbol | |
dc810e39 | 2014 | (info, symname, input_bfd, input_section, rel->r_offset, |
b34976b6 | 2015 | TRUE); |
915e5146 HPN |
2016 | break; |
2017 | ||
2018 | case bfd_reloc_outofrange: | |
2019 | msg = _("internal error: out of range error"); | |
2020 | break; | |
2021 | ||
2022 | case bfd_reloc_notsupported: | |
2023 | msg = _("internal error: unsupported relocation error"); | |
2024 | break; | |
2025 | ||
2026 | case bfd_reloc_dangerous: | |
2027 | msg = _("internal error: dangerous relocation"); | |
2028 | break; | |
2029 | ||
2030 | default: | |
2031 | msg = _("internal error: unknown error"); | |
2032 | break; | |
2033 | } | |
2034 | ||
2035 | if (msg) | |
2036 | r = info->callbacks->warning | |
dc810e39 | 2037 | (info, msg, symname, input_bfd, input_section, rel->r_offset); |
915e5146 HPN |
2038 | |
2039 | if (! r) | |
b34976b6 | 2040 | return FALSE; |
915e5146 HPN |
2041 | } |
2042 | } | |
2043 | ||
b34976b6 | 2044 | return TRUE; |
915e5146 HPN |
2045 | } |
2046 | \f | |
2047 | /* Finish up dynamic symbol handling. We set the contents of various | |
2048 | dynamic sections here. */ | |
2049 | ||
b34976b6 | 2050 | static bfd_boolean |
4dfe6ac6 NC |
2051 | elf_cris_finish_dynamic_symbol (bfd *output_bfd, |
2052 | struct bfd_link_info *info, | |
2053 | struct elf_link_hash_entry *h, | |
2054 | Elf_Internal_Sym *sym) | |
915e5146 | 2055 | { |
4dfe6ac6 | 2056 | struct elf_cris_link_hash_table * htab; |
915e5146 | 2057 | bfd *dynobj; |
bac23f82 HPN |
2058 | |
2059 | /* Where in the plt entry to put values. */ | |
915e5146 HPN |
2060 | int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16; |
2061 | ||
bac23f82 HPN |
2062 | /* What offset to add to the distance to the first PLT entry for the |
2063 | value at plt_off3. */ | |
2064 | int plt_off3_value_bias = 4; | |
2065 | ||
2066 | /* Where in the PLT entry the call-dynlink-stub is (happens to be same | |
2067 | for PIC and non-PIC for v32 and pre-v32). */ | |
2068 | int plt_stub_offset = 8; | |
2069 | int plt_entry_size = PLT_ENTRY_SIZE; | |
2070 | const bfd_byte *plt_entry = elf_cris_plt_entry; | |
2071 | const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry; | |
2072 | ||
4dfe6ac6 NC |
2073 | htab = elf_cris_hash_table (info); |
2074 | if (htab == NULL) | |
2075 | return FALSE; | |
2076 | ||
bac23f82 HPN |
2077 | /* Adjust the various PLT entry offsets. */ |
2078 | if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32) | |
2079 | { | |
2080 | plt_off2 = 14; | |
2081 | plt_off3 = 20; | |
2082 | plt_off3_value_bias = -2; | |
2083 | plt_stub_offset = 12; | |
2084 | plt_entry_size = PLT_ENTRY_SIZE_V32; | |
2085 | plt_entry = elf_cris_plt_entry_v32; | |
2086 | plt_pic_entry = elf_cris_pic_plt_entry_v32; | |
2087 | } | |
2088 | ||
915e5146 HPN |
2089 | dynobj = elf_hash_table (info)->dynobj; |
2090 | ||
2091 | if (h->plt.offset != (bfd_vma) -1) | |
2092 | { | |
2093 | asection *splt; | |
2094 | asection *sgotplt; | |
915e5146 HPN |
2095 | asection *srela; |
2096 | bfd_vma got_base; | |
2097 | ||
2098 | bfd_vma gotplt_offset | |
100382c7 | 2099 | = elf_cris_hash_entry (h)->gotplt_offset; |
915e5146 | 2100 | Elf_Internal_Rela rela; |
947216bf | 2101 | bfd_byte *loc; |
b34976b6 | 2102 | bfd_boolean has_gotplt = gotplt_offset != 0; |
915e5146 | 2103 | |
0bdf8d40 HPN |
2104 | /* Get the index in the .rela.plt relocations for the .got.plt |
2105 | entry that corresponds to this symbol. | |
2106 | We have to count backwards here, and the result is only valid | |
2107 | as an index into .rela.plt. We also have to undo the effect | |
2108 | of the R_CRIS_DTPMOD entry at .got index 3 (offset 12 into | |
2109 | .got.plt) for which gotplt_offset is adjusted, because while | |
2110 | that entry goes into .got.plt, its relocation goes into | |
2111 | .rela.got, not .rela.plt. (It's not PLT-specific; not to be | |
2112 | processed as part of the runtime lazy .rela.plt relocation). | |
2113 | FIXME: There be literal constants here... */ | |
2114 | bfd_vma rela_plt_index | |
4dfe6ac6 | 2115 | = (htab->dtpmod_refcount != 0 |
0bdf8d40 | 2116 | ? gotplt_offset/4 - 2 - 3 : gotplt_offset/4 - 3); |
915e5146 HPN |
2117 | |
2118 | /* Get the offset into the .got table of the entry that corresponds | |
2119 | to this function. Note that we embed knowledge that "incoming" | |
2120 | .got goes after .got.plt in the output without padding (pointer | |
2121 | aligned). However, that knowledge is present in several other | |
c152c796 | 2122 | places too. */ |
915e5146 HPN |
2123 | bfd_vma got_offset |
2124 | = (has_gotplt | |
2125 | ? gotplt_offset | |
4dfe6ac6 | 2126 | : h->got.offset + htab->next_gotplt_entry); |
915e5146 HPN |
2127 | |
2128 | /* This symbol has an entry in the procedure linkage table. Set it | |
2129 | up. */ | |
2130 | ||
2131 | BFD_ASSERT (h->dynindx != -1); | |
2132 | ||
3d4d4302 AM |
2133 | splt = bfd_get_linker_section (dynobj, ".plt"); |
2134 | sgotplt = bfd_get_linker_section (dynobj, ".got.plt"); | |
2135 | srela = bfd_get_linker_section (dynobj, ".rela.plt"); | |
915e5146 HPN |
2136 | BFD_ASSERT (splt != NULL && sgotplt != NULL |
2137 | && (! has_gotplt || srela != NULL)); | |
2138 | ||
2139 | got_base = sgotplt->output_section->vma + sgotplt->output_offset; | |
2140 | ||
2141 | /* Fill in the entry in the procedure linkage table. */ | |
2142 | if (! info->shared) | |
2143 | { | |
bac23f82 HPN |
2144 | memcpy (splt->contents + h->plt.offset, plt_entry, |
2145 | plt_entry_size); | |
915e5146 HPN |
2146 | |
2147 | /* We need to enter the absolute address of the GOT entry here. */ | |
2148 | bfd_put_32 (output_bfd, got_base + got_offset, | |
2149 | splt->contents + h->plt.offset + plt_off1); | |
2150 | } | |
2151 | else | |
2152 | { | |
bac23f82 HPN |
2153 | memcpy (splt->contents + h->plt.offset, plt_pic_entry, |
2154 | plt_entry_size); | |
915e5146 HPN |
2155 | bfd_put_32 (output_bfd, got_offset, |
2156 | splt->contents + h->plt.offset + plt_off1); | |
2157 | } | |
2158 | ||
2159 | /* Fill in the plt entry and make a relocation, if this is a "real" | |
2160 | PLT entry. */ | |
2161 | if (has_gotplt) | |
2162 | { | |
bac23f82 | 2163 | /* Fill in the offset to the reloc table. */ |
915e5146 | 2164 | bfd_put_32 (output_bfd, |
0bdf8d40 | 2165 | rela_plt_index * sizeof (Elf32_External_Rela), |
915e5146 HPN |
2166 | splt->contents + h->plt.offset + plt_off2); |
2167 | ||
2168 | /* Fill in the offset to the first PLT entry, where to "jump". */ | |
bac23f82 HPN |
2169 | bfd_put_32 (output_bfd, |
2170 | - (h->plt.offset + plt_off3 + plt_off3_value_bias), | |
915e5146 HPN |
2171 | splt->contents + h->plt.offset + plt_off3); |
2172 | ||
2173 | /* Fill in the entry in the global offset table with the address of | |
2174 | the relocating stub. */ | |
2175 | bfd_put_32 (output_bfd, | |
2176 | (splt->output_section->vma | |
2177 | + splt->output_offset | |
2178 | + h->plt.offset | |
bac23f82 | 2179 | + plt_stub_offset), |
915e5146 HPN |
2180 | sgotplt->contents + got_offset); |
2181 | ||
2182 | /* Fill in the entry in the .rela.plt section. */ | |
2183 | rela.r_offset = (sgotplt->output_section->vma | |
2184 | + sgotplt->output_offset | |
2185 | + got_offset); | |
2186 | rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT); | |
2187 | rela.r_addend = 0; | |
0bdf8d40 | 2188 | loc = srela->contents + rela_plt_index * sizeof (Elf32_External_Rela); |
947216bf | 2189 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
915e5146 HPN |
2190 | } |
2191 | ||
f5385ebf | 2192 | if (!h->def_regular) |
915e5146 HPN |
2193 | { |
2194 | /* Mark the symbol as undefined, rather than as defined in | |
2195 | the .plt section. Leave the value alone. */ | |
2196 | sym->st_shndx = SHN_UNDEF; | |
2197 | ||
2198 | /* FIXME: From elf32-sparc.c 2001-02-19 (1.18). I still don't | |
2199 | know whether resetting the value is significant; if it really | |
2200 | is, rather than a quirk or bug in the sparc port, then I | |
2201 | believe we'd see this elsewhere. */ | |
2202 | /* If the symbol is weak, we do need to clear the value. | |
2203 | Otherwise, the PLT entry would provide a definition for | |
2204 | the symbol even if the symbol wasn't defined anywhere, | |
2205 | and so the symbol would never be NULL. */ | |
f5385ebf | 2206 | if (!h->ref_regular_nonweak) |
915e5146 HPN |
2207 | sym->st_value = 0; |
2208 | } | |
2209 | } | |
2210 | ||
e4a2175c HPN |
2211 | /* For an ordinary program, we emit .got relocs only for symbols that |
2212 | are in the dynamic-symbols table and are either defined by the | |
2213 | program or are undefined weak symbols, or are function symbols | |
2214 | where we do not output a PLT: the PLT reloc was output above and all | |
2215 | references to the function symbol are redirected to the PLT. */ | |
4d96d128 | 2216 | if (h->got.offset != (bfd_vma) -1 |
100382c7 | 2217 | && (elf_cris_hash_entry (h)->reg_got_refcount > 0) |
6849c52f HPN |
2218 | && (info->shared |
2219 | || (h->dynindx != -1 | |
e4a2175c | 2220 | && h->plt.offset == (bfd_vma) -1 |
f5385ebf | 2221 | && !h->def_regular |
6849c52f | 2222 | && h->root.type != bfd_link_hash_undefweak))) |
915e5146 HPN |
2223 | { |
2224 | asection *sgot; | |
2225 | asection *srela; | |
2226 | Elf_Internal_Rela rela; | |
947216bf | 2227 | bfd_byte *loc; |
dc810e39 | 2228 | bfd_byte *where; |
915e5146 HPN |
2229 | |
2230 | /* This symbol has an entry in the global offset table. Set it up. */ | |
2231 | ||
3d4d4302 AM |
2232 | sgot = bfd_get_linker_section (dynobj, ".got"); |
2233 | srela = bfd_get_linker_section (dynobj, ".rela.got"); | |
915e5146 HPN |
2234 | BFD_ASSERT (sgot != NULL && srela != NULL); |
2235 | ||
2236 | rela.r_offset = (sgot->output_section->vma | |
2237 | + sgot->output_offset | |
dc810e39 | 2238 | + (h->got.offset &~ (bfd_vma) 1)); |
915e5146 HPN |
2239 | |
2240 | /* If this is a static link, or it is a -Bsymbolic link and the | |
2241 | symbol is defined locally or was forced to be local because | |
2242 | of a version file, we just want to emit a RELATIVE reloc. | |
2243 | The entry in the global offset table will already have been | |
2244 | initialized in the relocate_section function. */ | |
dc810e39 | 2245 | where = sgot->contents + (h->got.offset &~ (bfd_vma) 1); |
915e5146 HPN |
2246 | if (! elf_hash_table (info)->dynamic_sections_created |
2247 | || (info->shared | |
2248 | && (info->symbolic || h->dynindx == -1) | |
f5385ebf | 2249 | && h->def_regular)) |
915e5146 HPN |
2250 | { |
2251 | rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE); | |
dc810e39 | 2252 | rela.r_addend = bfd_get_signed_32 (output_bfd, where); |
915e5146 HPN |
2253 | } |
2254 | else | |
2255 | { | |
dc810e39 | 2256 | bfd_put_32 (output_bfd, (bfd_vma) 0, where); |
915e5146 HPN |
2257 | rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT); |
2258 | rela.r_addend = 0; | |
2259 | } | |
2260 | ||
947216bf AM |
2261 | loc = srela->contents; |
2262 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
2263 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
915e5146 HPN |
2264 | } |
2265 | ||
f5385ebf | 2266 | if (h->needs_copy) |
915e5146 HPN |
2267 | { |
2268 | asection *s; | |
2269 | Elf_Internal_Rela rela; | |
947216bf | 2270 | bfd_byte *loc; |
915e5146 HPN |
2271 | |
2272 | /* This symbol needs a copy reloc. Set it up. */ | |
2273 | ||
2274 | BFD_ASSERT (h->dynindx != -1 | |
2275 | && (h->root.type == bfd_link_hash_defined | |
2276 | || h->root.type == bfd_link_hash_defweak)); | |
2277 | ||
3d4d4302 | 2278 | s = bfd_get_linker_section (dynobj, ".rela.bss"); |
915e5146 HPN |
2279 | BFD_ASSERT (s != NULL); |
2280 | ||
2281 | rela.r_offset = (h->root.u.def.value | |
2282 | + h->root.u.def.section->output_section->vma | |
2283 | + h->root.u.def.section->output_offset); | |
2284 | rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY); | |
2285 | rela.r_addend = 0; | |
947216bf AM |
2286 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
2287 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
915e5146 HPN |
2288 | } |
2289 | ||
2290 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
9637f6ef | 2291 | if (h == elf_hash_table (info)->hdynamic |
22edb2f1 | 2292 | || h == elf_hash_table (info)->hgot) |
915e5146 HPN |
2293 | sym->st_shndx = SHN_ABS; |
2294 | ||
b34976b6 | 2295 | return TRUE; |
915e5146 HPN |
2296 | } |
2297 | \f | |
100382c7 HPN |
2298 | /* Finish up the dynamic sections. Do *not* emit relocs here, as their |
2299 | offsets were changed, as part of -z combreloc handling, from those we | |
2300 | computed. */ | |
915e5146 | 2301 | |
b34976b6 | 2302 | static bfd_boolean |
2c3fc389 NC |
2303 | elf_cris_finish_dynamic_sections (bfd *output_bfd, |
2304 | struct bfd_link_info *info) | |
915e5146 HPN |
2305 | { |
2306 | bfd *dynobj; | |
2307 | asection *sgot; | |
2308 | asection *sdyn; | |
2309 | ||
2310 | dynobj = elf_hash_table (info)->dynobj; | |
2311 | ||
3d4d4302 | 2312 | sgot = bfd_get_linker_section (dynobj, ".got.plt"); |
915e5146 | 2313 | BFD_ASSERT (sgot != NULL); |
3d4d4302 | 2314 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
915e5146 HPN |
2315 | |
2316 | if (elf_hash_table (info)->dynamic_sections_created) | |
2317 | { | |
2318 | asection *splt; | |
2319 | Elf32_External_Dyn *dyncon, *dynconend; | |
2320 | ||
3d4d4302 | 2321 | splt = bfd_get_linker_section (dynobj, ".plt"); |
915e5146 HPN |
2322 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
2323 | ||
2324 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 2325 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
915e5146 HPN |
2326 | for (; dyncon < dynconend; dyncon++) |
2327 | { | |
2328 | Elf_Internal_Dyn dyn; | |
2329 | asection *s; | |
2330 | ||
2331 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
2332 | ||
2333 | switch (dyn.d_tag) | |
2334 | { | |
2335 | default: | |
2336 | break; | |
2337 | ||
2338 | case DT_PLTGOT: | |
2339 | s = bfd_get_section_by_name (output_bfd, ".got"); | |
2340 | BFD_ASSERT (s != NULL); | |
2341 | dyn.d_un.d_ptr = s->vma; | |
2342 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2343 | break; | |
2344 | ||
2345 | case DT_JMPREL: | |
2346 | /* Yes, we *can* have a .plt and no .plt.rela, for instance | |
2347 | if all symbols are found in the .got (not .got.plt). */ | |
2348 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2349 | dyn.d_un.d_ptr = s != NULL ? s->vma : 0; | |
2350 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2351 | break; | |
2352 | ||
2353 | case DT_PLTRELSZ: | |
2354 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2355 | if (s == NULL) | |
2356 | dyn.d_un.d_val = 0; | |
915e5146 | 2357 | else |
eea6121a | 2358 | dyn.d_un.d_val = s->size; |
915e5146 HPN |
2359 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
2360 | break; | |
2361 | ||
2362 | case DT_RELASZ: | |
2363 | /* The procedure linkage table relocs (DT_JMPREL) should | |
2364 | not be included in the overall relocs (DT_RELA). | |
2365 | Therefore, we override the DT_RELASZ entry here to | |
2366 | make it not include the JMPREL relocs. Since the | |
2367 | linker script arranges for .rela.plt to follow all | |
2368 | other relocation sections, we don't have to worry | |
2369 | about changing the DT_RELA entry. */ | |
2370 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2371 | if (s != NULL) | |
eea6121a | 2372 | dyn.d_un.d_val -= s->size; |
915e5146 HPN |
2373 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
2374 | break; | |
2375 | } | |
2376 | } | |
2377 | ||
2378 | /* Fill in the first entry in the procedure linkage table. */ | |
eea6121a | 2379 | if (splt->size > 0) |
915e5146 | 2380 | { |
bac23f82 HPN |
2381 | if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32) |
2382 | { | |
2383 | if (info->shared) | |
2384 | memcpy (splt->contents, elf_cris_pic_plt0_entry_v32, | |
2385 | PLT_ENTRY_SIZE_V32); | |
2386 | else | |
2387 | { | |
2388 | memcpy (splt->contents, elf_cris_plt0_entry_v32, | |
2389 | PLT_ENTRY_SIZE_V32); | |
2390 | bfd_put_32 (output_bfd, | |
2391 | sgot->output_section->vma | |
2392 | + sgot->output_offset + 4, | |
2393 | splt->contents + 4); | |
2394 | ||
2395 | elf_section_data (splt->output_section)->this_hdr.sh_entsize | |
2396 | = PLT_ENTRY_SIZE_V32; | |
2397 | } | |
2398 | } | |
915e5146 | 2399 | else |
bac23f82 HPN |
2400 | { |
2401 | if (info->shared) | |
2402 | memcpy (splt->contents, elf_cris_pic_plt0_entry, | |
2403 | PLT_ENTRY_SIZE); | |
2404 | else | |
2405 | { | |
2406 | memcpy (splt->contents, elf_cris_plt0_entry, | |
2407 | PLT_ENTRY_SIZE); | |
2408 | bfd_put_32 (output_bfd, | |
2409 | sgot->output_section->vma | |
2410 | + sgot->output_offset + 4, | |
2411 | splt->contents + 6); | |
2412 | bfd_put_32 (output_bfd, | |
2413 | sgot->output_section->vma | |
2414 | + sgot->output_offset + 8, | |
2415 | splt->contents + 14); | |
2416 | ||
2417 | elf_section_data (splt->output_section)->this_hdr.sh_entsize | |
2418 | = PLT_ENTRY_SIZE; | |
2419 | } | |
915e5146 HPN |
2420 | } |
2421 | } | |
2422 | } | |
2423 | ||
2424 | /* Fill in the first three entries in the global offset table. */ | |
eea6121a | 2425 | if (sgot->size > 0) |
915e5146 HPN |
2426 | { |
2427 | if (sdyn == NULL) | |
2428 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
2429 | else | |
2430 | bfd_put_32 (output_bfd, | |
2431 | sdyn->output_section->vma + sdyn->output_offset, | |
2432 | sgot->contents); | |
2433 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
2434 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
2435 | } | |
2436 | ||
2437 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
2438 | ||
b34976b6 | 2439 | return TRUE; |
06c15ad7 HPN |
2440 | } |
2441 | \f | |
2442 | /* Return the section that should be marked against GC for a given | |
2443 | relocation. */ | |
2444 | ||
2445 | static asection * | |
07adf181 AM |
2446 | cris_elf_gc_mark_hook (asection *sec, |
2447 | struct bfd_link_info *info, | |
2448 | Elf_Internal_Rela *rel, | |
2449 | struct elf_link_hash_entry *h, | |
2450 | Elf_Internal_Sym *sym) | |
06c15ad7 | 2451 | { |
100382c7 | 2452 | enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info); |
06c15ad7 | 2453 | if (h != NULL) |
100382c7 | 2454 | switch (r_type) |
07adf181 AM |
2455 | { |
2456 | case R_CRIS_GNU_VTINHERIT: | |
2457 | case R_CRIS_GNU_VTENTRY: | |
2458 | return NULL; | |
100382c7 HPN |
2459 | |
2460 | default: | |
2461 | break; | |
07adf181 | 2462 | } |
06c15ad7 | 2463 | |
07adf181 | 2464 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
06c15ad7 HPN |
2465 | } |
2466 | ||
2467 | /* Update the got entry reference counts for the section being removed. */ | |
2468 | ||
b34976b6 | 2469 | static bfd_boolean |
07adf181 AM |
2470 | cris_elf_gc_sweep_hook (bfd *abfd, |
2471 | struct bfd_link_info *info, | |
2472 | asection *sec, | |
2473 | const Elf_Internal_Rela *relocs) | |
06c15ad7 | 2474 | { |
4dfe6ac6 | 2475 | struct elf_cris_link_hash_table * htab; |
915e5146 HPN |
2476 | Elf_Internal_Shdr *symtab_hdr; |
2477 | struct elf_link_hash_entry **sym_hashes; | |
2478 | bfd_signed_vma *local_got_refcounts; | |
2479 | const Elf_Internal_Rela *rel, *relend; | |
915e5146 HPN |
2480 | bfd *dynobj; |
2481 | asection *sgot; | |
2482 | asection *srelgot; | |
2483 | ||
7dda2462 TG |
2484 | if (info->relocatable) |
2485 | return TRUE; | |
2486 | ||
915e5146 HPN |
2487 | dynobj = elf_hash_table (info)->dynobj; |
2488 | if (dynobj == NULL) | |
b34976b6 | 2489 | return TRUE; |
915e5146 | 2490 | |
4dfe6ac6 NC |
2491 | htab = elf_cris_hash_table (info); |
2492 | if (htab == NULL) | |
2493 | return FALSE; | |
2494 | ||
babfd660 KH |
2495 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
2496 | sym_hashes = elf_sym_hashes (abfd); | |
2497 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
2498 | ||
3d4d4302 AM |
2499 | sgot = bfd_get_linker_section (dynobj, ".got"); |
2500 | srelgot = bfd_get_linker_section (dynobj, ".rela.got"); | |
915e5146 HPN |
2501 | |
2502 | relend = relocs + sec->reloc_count; | |
2503 | for (rel = relocs; rel < relend; rel++) | |
2504 | { | |
babfd660 | 2505 | unsigned long r_symndx; |
3eb128b2 | 2506 | struct elf_link_hash_entry *h = NULL; |
100382c7 HPN |
2507 | bfd_signed_vma got_element_size = 4; |
2508 | bfd_signed_vma *specific_refcount = NULL; | |
2509 | enum elf_cris_reloc_type r_type; | |
3eb128b2 AM |
2510 | |
2511 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2512 | if (r_symndx >= symtab_hdr->sh_info) | |
2513 | { | |
2514 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
2515 | while (h->root.type == bfd_link_hash_indirect | |
2516 | || h->root.type == bfd_link_hash_warning) | |
2517 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2518 | } | |
babfd660 | 2519 | |
100382c7 HPN |
2520 | r_type = ELF32_R_TYPE (rel->r_info); |
2521 | switch (r_type) | |
2522 | { | |
2523 | case R_CRIS_32_GOT: | |
2524 | case R_CRIS_16_GOT: | |
2525 | case R_CRIS_16_GOTPLT: | |
2526 | case R_CRIS_32_GOTPLT: | |
2527 | specific_refcount = h != NULL | |
2528 | ? &((struct elf_cris_link_hash_entry *) h)->reg_got_refcount | |
2529 | : &local_got_refcounts[LGOT_REG_NDX (r_symndx)]; | |
2530 | break; | |
2531 | ||
2532 | case R_CRIS_32_GD: | |
2533 | case R_CRIS_32_GOT_GD: | |
2534 | case R_CRIS_16_GOT_GD: | |
2535 | got_element_size = 8; | |
2536 | specific_refcount = h != NULL | |
2537 | ? &((struct elf_cris_link_hash_entry *) h)->dtp_refcount | |
2538 | : &local_got_refcounts[LGOT_DTP_NDX (r_symndx)]; | |
2539 | break; | |
2540 | ||
75f500d7 | 2541 | case R_CRIS_32_IE: |
100382c7 HPN |
2542 | case R_CRIS_16_GOT_TPREL: |
2543 | case R_CRIS_32_GOT_TPREL: | |
2544 | specific_refcount = h != NULL | |
2545 | ? &((struct elf_cris_link_hash_entry *) h)->tprel_refcount | |
2546 | : &local_got_refcounts[LGOT_TPREL_NDX (r_symndx)]; | |
2547 | break; | |
2548 | ||
2549 | default: | |
2550 | break; | |
2551 | } | |
2552 | ||
2553 | switch (r_type) | |
915e5146 | 2554 | { |
75f500d7 | 2555 | case R_CRIS_32_IE: |
100382c7 HPN |
2556 | case R_CRIS_32_GD: |
2557 | case R_CRIS_16_GOT_TPREL: | |
2558 | case R_CRIS_32_GOT_TPREL: | |
2559 | case R_CRIS_32_GOT_GD: | |
2560 | case R_CRIS_16_GOT_GD: | |
915e5146 HPN |
2561 | case R_CRIS_16_GOT: |
2562 | case R_CRIS_32_GOT: | |
3eb128b2 | 2563 | if (h != NULL) |
915e5146 | 2564 | { |
100382c7 HPN |
2565 | /* If the counters are 0 when we got here, we've |
2566 | miscounted somehow somewhere, an internal error. */ | |
2567 | BFD_ASSERT (h->got.refcount > 0); | |
2568 | --h->got.refcount; | |
2569 | ||
2570 | BFD_ASSERT (*specific_refcount > 0); | |
2571 | --*specific_refcount; | |
2572 | if (*specific_refcount == 0) | |
915e5146 | 2573 | { |
100382c7 HPN |
2574 | /* We don't need the .got entry any more. */ |
2575 | sgot->size -= got_element_size; | |
2576 | srelgot->size -= sizeof (Elf32_External_Rela); | |
915e5146 HPN |
2577 | } |
2578 | break; | |
2579 | } | |
2580 | ||
2581 | local_got_reloc: | |
2582 | if (local_got_refcounts != NULL) | |
2583 | { | |
100382c7 HPN |
2584 | /* If the counters are 0 when we got here, we've |
2585 | miscounted somehow somewhere, an internal error. */ | |
2586 | BFD_ASSERT (local_got_refcounts[r_symndx] > 0); | |
2587 | --local_got_refcounts[r_symndx]; | |
2588 | ||
2589 | BFD_ASSERT (*specific_refcount > 0); | |
2590 | --*specific_refcount; | |
2591 | if (*specific_refcount == 0) | |
915e5146 | 2592 | { |
100382c7 HPN |
2593 | /* We don't need the .got entry any more. */ |
2594 | sgot->size -= got_element_size; | |
2595 | if (info->shared) | |
2596 | srelgot->size -= sizeof (Elf32_External_Rela); | |
915e5146 HPN |
2597 | } |
2598 | } | |
2599 | break; | |
2600 | ||
2601 | case R_CRIS_16_GOTPLT: | |
2602 | case R_CRIS_32_GOTPLT: | |
2603 | /* For local symbols, treat these like GOT relocs. */ | |
3eb128b2 | 2604 | if (h == NULL) |
915e5146 | 2605 | goto local_got_reloc; |
970d488d HPN |
2606 | else |
2607 | /* For global symbols, adjust the reloc-specific refcount. */ | |
2608 | elf_cris_hash_entry (h)->gotplt_refcount--; | |
e4a2175c | 2609 | /* Fall through. */ |
3eb128b2 | 2610 | |
915e5146 HPN |
2611 | case R_CRIS_32_PLT_GOTREL: |
2612 | /* FIXME: We don't garbage-collect away the .got section. */ | |
2613 | if (local_got_refcounts != NULL) | |
2614 | local_got_refcounts[-1]--; | |
2615 | /* Fall through. */ | |
3eb128b2 | 2616 | |
970d488d HPN |
2617 | case R_CRIS_8: |
2618 | case R_CRIS_16: | |
2619 | case R_CRIS_32: | |
915e5146 HPN |
2620 | case R_CRIS_8_PCREL: |
2621 | case R_CRIS_16_PCREL: | |
2622 | case R_CRIS_32_PCREL: | |
2623 | case R_CRIS_32_PLT_PCREL: | |
970d488d | 2624 | /* Negate the increment we did in cris_elf_check_relocs. */ |
3eb128b2 | 2625 | if (h != NULL) |
915e5146 | 2626 | { |
0a4787a0 HPN |
2627 | if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
2628 | && h->plt.refcount > 0) | |
915e5146 HPN |
2629 | --h->plt.refcount; |
2630 | } | |
2631 | break; | |
2632 | ||
100382c7 | 2633 | case R_CRIS_32_DTPREL: |
6718f446 HPN |
2634 | /* This'd be a .dtpreld entry in e.g. debug info. */ |
2635 | if ((sec->flags & SEC_ALLOC) == 0) | |
2636 | break; | |
2637 | /* Fall through. */ | |
100382c7 | 2638 | case R_CRIS_16_DTPREL: |
4dfe6ac6 NC |
2639 | htab->dtpmod_refcount--; |
2640 | if (htab->dtpmod_refcount == 0) | |
2641 | htab->next_gotplt_entry -= 8; | |
100382c7 HPN |
2642 | BFD_ASSERT (local_got_refcounts != NULL); |
2643 | local_got_refcounts[-1]--; | |
2644 | break; | |
2645 | ||
915e5146 HPN |
2646 | default: |
2647 | break; | |
2648 | } | |
2649 | } | |
2650 | ||
b34976b6 | 2651 | return TRUE; |
06c15ad7 HPN |
2652 | } |
2653 | ||
5d5a918a HPN |
2654 | /* The elf_backend_plt_sym_val hook function. */ |
2655 | ||
2656 | static bfd_vma | |
51806b97 HPN |
2657 | cris_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED, const asection *plt, |
2658 | const arelent *rel) | |
5d5a918a HPN |
2659 | { |
2660 | bfd_size_type plt_entry_size; | |
51806b97 HPN |
2661 | bfd_size_type pltoffs; |
2662 | bfd *abfd = plt->owner; | |
5d5a918a | 2663 | |
51806b97 HPN |
2664 | /* Same for CRIS and CRIS v32; see elf_cris_(|pic_)plt_entry(|_v32)[]. */ |
2665 | bfd_size_type plt_entry_got_offset = 2; | |
2666 | bfd_size_type plt_sec_size; | |
2667 | bfd_size_type got_vma_for_dyn; | |
2668 | asection *got; | |
2669 | ||
2670 | /* FIXME: the .got section should be readily available also when | |
2671 | we're not linking. */ | |
2672 | if ((got = bfd_get_section_by_name (abfd, ".got")) == NULL) | |
2673 | return (bfd_vma) -1; | |
2674 | ||
2675 | plt_sec_size = bfd_section_size (plt->owner, plt); | |
5d5a918a | 2676 | plt_entry_size |
51806b97 | 2677 | = (bfd_get_mach (abfd) == bfd_mach_cris_v32 |
5d5a918a HPN |
2678 | ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE); |
2679 | ||
51806b97 HPN |
2680 | /* Data in PLT is GOT-relative for DYN, but absolute for EXE. */ |
2681 | got_vma_for_dyn = (abfd->flags & EXEC_P) ? 0 : got->vma; | |
2682 | ||
2683 | /* Because we can have merged GOT entries; a single .got entry for | |
2684 | both GOT and the PLT part of the GOT (.got.plt), the index of the | |
2685 | reloc in .rela.plt is not the same as the index in the PLT. | |
2686 | Instead, we have to hunt down the GOT offset in the PLT that | |
2687 | corresponds to that of this reloc. Unfortunately, we will only | |
2688 | be called for the .rela.plt relocs, so we'll miss synthetic | |
2689 | symbols for .plt entries with merged GOT entries. (FIXME: | |
2690 | fixable by providing our own bfd_elf32_get_synthetic_symtab. | |
2691 | Doesn't seem worthwile at time of this writing.) FIXME: we've | |
2692 | gone from O(1) to O(N) (N number of PLT entries) for finding each | |
2693 | PLT address. Shouldn't matter in practice though. */ | |
2694 | ||
2695 | for (pltoffs = plt_entry_size; | |
2696 | pltoffs < plt_sec_size; | |
2697 | pltoffs += plt_entry_size) | |
2698 | { | |
2699 | bfd_size_type got_offset; | |
2700 | bfd_byte gotoffs_raw[4]; | |
68ffbac6 | 2701 | |
51806b97 HPN |
2702 | if (!bfd_get_section_contents (abfd, (asection *) plt, gotoffs_raw, |
2703 | pltoffs + plt_entry_got_offset, | |
2704 | sizeof (gotoffs_raw))) | |
2705 | return (bfd_vma) -1; | |
2706 | ||
2707 | got_offset = bfd_get_32 (abfd, gotoffs_raw); | |
2708 | if (got_offset + got_vma_for_dyn == rel->address) | |
2709 | return plt->vma + pltoffs; | |
2710 | } | |
2711 | ||
2712 | /* While it's tempting to BFD_ASSERT that we shouldn't get here, | |
2713 | that'd not be graceful behavior for invalid input. */ | |
2714 | return (bfd_vma) -1; | |
5d5a918a HPN |
2715 | } |
2716 | ||
915e5146 HPN |
2717 | /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT |
2718 | entry but we found we will not create any. Called when we find we will | |
4d96d128 HPN |
2719 | not have any PLT for this symbol, by for example |
2720 | elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link, | |
2721 | or elf_cris_size_dynamic_sections if no dynamic sections will be | |
2722 | created (we're only linking static objects). */ | |
915e5146 | 2723 | |
b34976b6 | 2724 | static bfd_boolean |
2c3fc389 | 2725 | elf_cris_adjust_gotplt_to_got (struct elf_cris_link_hash_entry *h, void * p) |
915e5146 HPN |
2726 | { |
2727 | struct bfd_link_info *info = (struct bfd_link_info *) p; | |
915e5146 | 2728 | |
970d488d HPN |
2729 | /* A GOTPLT reloc, when activated, is supposed to be included into |
2730 | the PLT refcount. */ | |
2731 | BFD_ASSERT (h->gotplt_refcount == 0 | |
2732 | || h->gotplt_refcount <= h->root.plt.refcount); | |
2733 | ||
915e5146 HPN |
2734 | /* If nobody wanted a GOTPLT with this symbol, we're done. */ |
2735 | if (h->gotplt_refcount <= 0) | |
b34976b6 | 2736 | return TRUE; |
915e5146 | 2737 | |
100382c7 | 2738 | if (h->reg_got_refcount > 0) |
915e5146 | 2739 | { |
100382c7 HPN |
2740 | /* There's a GOT entry for this symbol. Just adjust the refcounts. |
2741 | Probably not necessary at this stage, but keeping them accurate | |
915e5146 HPN |
2742 | helps avoiding surprises later. */ |
2743 | h->root.got.refcount += h->gotplt_refcount; | |
100382c7 | 2744 | h->reg_got_refcount += h->gotplt_refcount; |
5e0f5ae3 | 2745 | h->gotplt_refcount = 0; |
915e5146 HPN |
2746 | } |
2747 | else | |
2748 | { | |
4d96d128 | 2749 | /* No GOT entry for this symbol. We need to create one. */ |
8d1d654f AM |
2750 | bfd *dynobj = elf_hash_table (info)->dynobj; |
2751 | asection *sgot; | |
2752 | asection *srelgot; | |
2753 | ||
2754 | BFD_ASSERT (dynobj != NULL); | |
3d4d4302 AM |
2755 | sgot = bfd_get_linker_section (dynobj, ".got"); |
2756 | srelgot = bfd_get_linker_section (dynobj, ".rela.got"); | |
915e5146 | 2757 | |
100382c7 HPN |
2758 | /* Put accurate refcounts there. */ |
2759 | h->root.got.refcount += h->gotplt_refcount; | |
2760 | h->reg_got_refcount = h->gotplt_refcount; | |
915e5146 | 2761 | |
5e0f5ae3 | 2762 | h->gotplt_refcount = 0; |
915e5146 | 2763 | |
44aa49bb HPN |
2764 | /* We always have a .got and a .rela.got section if there were |
2765 | GOTPLT relocs in input. */ | |
2766 | BFD_ASSERT (sgot != NULL && srelgot != NULL); | |
915e5146 HPN |
2767 | |
2768 | /* Allocate space in the .got section. */ | |
eea6121a | 2769 | sgot->size += 4; |
915e5146 HPN |
2770 | |
2771 | /* Allocate relocation space. */ | |
eea6121a | 2772 | srelgot->size += sizeof (Elf32_External_Rela); |
915e5146 HPN |
2773 | } |
2774 | ||
b34976b6 | 2775 | return TRUE; |
915e5146 HPN |
2776 | } |
2777 | ||
2778 | /* Try to fold PLT entries with GOT entries. There are two cases when we | |
2779 | want to do this: | |
2780 | ||
2781 | - When all PLT references are GOTPLT references, and there are GOT | |
e4a2175c HPN |
2782 | references, and this is not the executable. We don't have to |
2783 | generate a PLT at all. | |
915e5146 | 2784 | |
e4a2175c HPN |
2785 | - When there are both (ordinary) PLT references and GOT references, |
2786 | and this isn't the executable. | |
915e5146 | 2787 | We want to make the PLT reference use the ordinary GOT entry rather |
e4a2175c HPN |
2788 | than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry, |
2789 | since the GOT entry will have to be resolved at startup anyway. | |
915e5146 HPN |
2790 | |
2791 | Though the latter case is handled when room for the PLT is allocated, | |
2792 | not here. | |
2793 | ||
e4a2175c HPN |
2794 | By folding into the GOT, we may need a round-trip to a PLT in the |
2795 | executable for calls, a loss in performance. Still, losing a | |
2796 | reloc is a win in size and at least in start-up time. | |
2797 | ||
915e5146 HPN |
2798 | Note that this function is called before symbols are forced local by |
2799 | version scripts. The differing cases are handled by | |
2800 | elf_cris_hide_symbol. */ | |
2801 | ||
b34976b6 | 2802 | static bfd_boolean |
2c3fc389 | 2803 | elf_cris_try_fold_plt_to_got (struct elf_cris_link_hash_entry *h, void * p) |
915e5146 HPN |
2804 | { |
2805 | struct bfd_link_info *info = (struct bfd_link_info *) p; | |
2806 | ||
2807 | /* If there are no GOT references for this symbol, we can't fold any | |
2808 | other reference so there's nothing to do. Likewise if there are no | |
2809 | PLT references; GOTPLT references included. */ | |
2810 | if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0) | |
b34976b6 | 2811 | return TRUE; |
915e5146 HPN |
2812 | |
2813 | /* GOTPLT relocs are supposed to be included into the PLT refcount. */ | |
2814 | BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount); | |
2815 | ||
2816 | if (h->gotplt_refcount == h->root.plt.refcount) | |
2817 | { | |
4d96d128 | 2818 | /* The only PLT references are GOTPLT references, and there are GOT |
915e5146 HPN |
2819 | references. Convert PLT to GOT references. */ |
2820 | if (! elf_cris_adjust_gotplt_to_got (h, info)) | |
b34976b6 | 2821 | return FALSE; |
915e5146 HPN |
2822 | |
2823 | /* Clear the PLT references, so no PLT will be created. */ | |
2824 | h->root.plt.offset = (bfd_vma) -1; | |
2825 | } | |
2826 | ||
b34976b6 | 2827 | return TRUE; |
915e5146 HPN |
2828 | } |
2829 | ||
2830 | /* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc | |
2831 | to use a GOT entry (and create one) rather than requiring a GOTPLT | |
2832 | entry. */ | |
2833 | ||
2834 | static void | |
2c3fc389 NC |
2835 | elf_cris_hide_symbol (struct bfd_link_info *info, |
2836 | struct elf_link_hash_entry *h, | |
2837 | bfd_boolean force_local) | |
915e5146 HPN |
2838 | { |
2839 | elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info); | |
2840 | ||
e5094212 | 2841 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
915e5146 HPN |
2842 | } |
2843 | ||
2844 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
2845 | regular object. The current definition is in some section of the | |
2846 | dynamic object, but we're not including those sections. We have to | |
2847 | change the definition to something the rest of the link can | |
2848 | understand. */ | |
2849 | ||
b34976b6 | 2850 | static bfd_boolean |
4dfe6ac6 NC |
2851 | elf_cris_adjust_dynamic_symbol (struct bfd_link_info *info, |
2852 | struct elf_link_hash_entry *h) | |
915e5146 | 2853 | { |
4dfe6ac6 | 2854 | struct elf_cris_link_hash_table * htab; |
915e5146 HPN |
2855 | bfd *dynobj; |
2856 | asection *s; | |
bac23f82 | 2857 | bfd_size_type plt_entry_size; |
915e5146 | 2858 | |
4dfe6ac6 NC |
2859 | htab = elf_cris_hash_table (info); |
2860 | if (htab == NULL) | |
2861 | return FALSE; | |
2862 | ||
915e5146 HPN |
2863 | dynobj = elf_hash_table (info)->dynobj; |
2864 | ||
2865 | /* Make sure we know what is going on here. */ | |
2866 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 2867 | && (h->needs_plt |
f6e332e6 | 2868 | || h->u.weakdef != NULL |
f5385ebf AM |
2869 | || (h->def_dynamic |
2870 | && h->ref_regular | |
2871 | && !h->def_regular))); | |
915e5146 | 2872 | |
bac23f82 HPN |
2873 | plt_entry_size |
2874 | = (bfd_get_mach (dynobj) == bfd_mach_cris_v32 | |
2875 | ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE); | |
2876 | ||
915e5146 HPN |
2877 | /* If this is a function, put it in the procedure linkage table. We |
2878 | will fill in the contents of the procedure linkage table later, | |
2879 | when we know the address of the .got section. */ | |
2880 | if (h->type == STT_FUNC | |
f5385ebf | 2881 | || h->needs_plt) |
915e5146 | 2882 | { |
6849c52f HPN |
2883 | /* If we link a program (not a DSO), we'll get rid of unnecessary |
2884 | PLT entries; we point to the actual symbols -- even for pic | |
2885 | relocs, because a program built with -fpic should have the same | |
2886 | result as one built without -fpic, specifically considering weak | |
2887 | symbols. | |
2888 | FIXME: m68k and i386 differ here, for unclear reasons. */ | |
915e5146 | 2889 | if (! info->shared |
f5385ebf | 2890 | && !h->def_dynamic) |
915e5146 HPN |
2891 | { |
2892 | /* This case can occur if we saw a PLT reloc in an input file, | |
6849c52f HPN |
2893 | but the symbol was not defined by a dynamic object. In such |
2894 | a case, we don't actually need to build a procedure linkage | |
2895 | table, and we can just do an absolute or PC reloc instead, or | |
4d96d128 | 2896 | change a .got.plt index to a .got index for GOTPLT relocs. */ |
f5385ebf AM |
2897 | BFD_ASSERT (h->needs_plt); |
2898 | h->needs_plt = 0; | |
915e5146 | 2899 | h->plt.offset = (bfd_vma) -1; |
915e5146 HPN |
2900 | return |
2901 | elf_cris_adjust_gotplt_to_got ((struct | |
2902 | elf_cris_link_hash_entry *) h, | |
2903 | info); | |
2904 | } | |
2905 | ||
e4a2175c HPN |
2906 | /* If we had a R_CRIS_GLOB_DAT that didn't have to point to a PLT; |
2907 | where a pointer-equivalent symbol was unimportant (i.e. more | |
2908 | like R_CRIS_JUMP_SLOT after symbol evaluation) we could get rid | |
2909 | of the PLT. We can't for the executable, because the GOT | |
2910 | entries will point to the PLT there (and be constant). */ | |
2911 | if (info->shared | |
2912 | && !elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry*) | |
2913 | h, info)) | |
b34976b6 | 2914 | return FALSE; |
915e5146 HPN |
2915 | |
2916 | /* GC or folding may have rendered this entry unused. */ | |
2917 | if (h->plt.refcount <= 0) | |
2918 | { | |
f5385ebf | 2919 | h->needs_plt = 0; |
915e5146 | 2920 | h->plt.offset = (bfd_vma) -1; |
b34976b6 | 2921 | return TRUE; |
915e5146 HPN |
2922 | } |
2923 | ||
2924 | /* Make sure this symbol is output as a dynamic symbol. */ | |
2925 | if (h->dynindx == -1) | |
2926 | { | |
c152c796 | 2927 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2928 | return FALSE; |
915e5146 HPN |
2929 | } |
2930 | ||
3d4d4302 | 2931 | s = bfd_get_linker_section (dynobj, ".plt"); |
915e5146 HPN |
2932 | BFD_ASSERT (s != NULL); |
2933 | ||
2934 | /* If this is the first .plt entry, make room for the special | |
2935 | first entry. */ | |
eea6121a | 2936 | if (s->size == 0) |
bac23f82 | 2937 | s->size += plt_entry_size; |
915e5146 HPN |
2938 | |
2939 | /* If this symbol is not defined in a regular file, and we are | |
2940 | not generating a shared library, then set the symbol to this | |
6849c52f | 2941 | location in the .plt. */ |
915e5146 | 2942 | if (!info->shared |
f5385ebf | 2943 | && !h->def_regular) |
915e5146 HPN |
2944 | { |
2945 | h->root.u.def.section = s; | |
eea6121a | 2946 | h->root.u.def.value = s->size; |
915e5146 HPN |
2947 | } |
2948 | ||
4d96d128 HPN |
2949 | /* If there's already a GOT entry, use that, not a .got.plt. A |
2950 | GOT field still has a reference count when we get here; it's | |
e4a2175c HPN |
2951 | not yet changed to an offset. We can't do this for an |
2952 | executable, because then the reloc associated with the PLT | |
2953 | would get a non-PLT reloc pointing to the PLT. FIXME: Move | |
2954 | this to elf_cris_try_fold_plt_to_got. */ | |
2955 | if (info->shared && h->got.refcount > 0) | |
915e5146 HPN |
2956 | { |
2957 | h->got.refcount += h->plt.refcount; | |
2958 | ||
2959 | /* Mark the PLT offset to use the GOT entry by setting the low | |
2960 | bit in the plt offset; it is always a multiple of | |
bac23f82 HPN |
2961 | plt_entry_size (which is at least a multiple of 2). */ |
2962 | BFD_ASSERT ((s->size % plt_entry_size) == 0); | |
915e5146 HPN |
2963 | |
2964 | /* Change the PLT refcount to an offset. */ | |
eea6121a | 2965 | h->plt.offset = s->size; |
915e5146 HPN |
2966 | |
2967 | /* By not setting gotplt_offset (i.e. it remains at 0), we signal | |
2968 | that the got entry should be used instead. */ | |
2969 | BFD_ASSERT (((struct elf_cris_link_hash_entry *) | |
2970 | h)->gotplt_offset == 0); | |
2971 | ||
2972 | /* Make room for this entry. */ | |
bac23f82 | 2973 | s->size += plt_entry_size; |
915e5146 | 2974 | |
b34976b6 | 2975 | return TRUE; |
915e5146 HPN |
2976 | } |
2977 | ||
2978 | /* No GOT reference for this symbol; prepare for an ordinary PLT. */ | |
eea6121a | 2979 | h->plt.offset = s->size; |
915e5146 HPN |
2980 | |
2981 | /* Make room for this entry. */ | |
bac23f82 | 2982 | s->size += plt_entry_size; |
915e5146 HPN |
2983 | |
2984 | /* We also need to make an entry in the .got.plt section, which | |
2985 | will be placed in the .got section by the linker script. */ | |
2986 | ((struct elf_cris_link_hash_entry *) h)->gotplt_offset | |
4dfe6ac6 NC |
2987 | = htab->next_gotplt_entry; |
2988 | htab->next_gotplt_entry += 4; | |
915e5146 | 2989 | |
3d4d4302 | 2990 | s = bfd_get_linker_section (dynobj, ".got.plt"); |
915e5146 | 2991 | BFD_ASSERT (s != NULL); |
eea6121a | 2992 | s->size += 4; |
915e5146 HPN |
2993 | |
2994 | /* We also need to make an entry in the .rela.plt section. */ | |
2995 | ||
3d4d4302 | 2996 | s = bfd_get_linker_section (dynobj, ".rela.plt"); |
915e5146 | 2997 | BFD_ASSERT (s != NULL); |
eea6121a | 2998 | s->size += sizeof (Elf32_External_Rela); |
915e5146 | 2999 | |
b34976b6 | 3000 | return TRUE; |
915e5146 HPN |
3001 | } |
3002 | ||
3003 | /* Reinitialize the plt offset now that it is not used as a reference | |
3004 | count any more. */ | |
3005 | h->plt.offset = (bfd_vma) -1; | |
3006 | ||
3007 | /* If this is a weak symbol, and there is a real definition, the | |
3008 | processor independent code will have arranged for us to see the | |
3009 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 3010 | if (h->u.weakdef != NULL) |
915e5146 | 3011 | { |
f6e332e6 AM |
3012 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
3013 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
3014 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
3015 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 3016 | return TRUE; |
915e5146 HPN |
3017 | } |
3018 | ||
3019 | /* This is a reference to a symbol defined by a dynamic object which | |
3020 | is not a function. */ | |
3021 | ||
3022 | /* If we are creating a shared library, we must presume that the | |
3023 | only references to the symbol are via the global offset table. | |
3024 | For such cases we need not do anything here; the relocations will | |
3025 | be handled correctly by relocate_section. */ | |
3026 | if (info->shared) | |
b34976b6 | 3027 | return TRUE; |
915e5146 HPN |
3028 | |
3029 | /* If there are no references to this symbol that do not use the | |
3030 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 3031 | if (!h->non_got_ref) |
b34976b6 | 3032 | return TRUE; |
915e5146 HPN |
3033 | |
3034 | /* We must allocate the symbol in our .dynbss section, which will | |
3035 | become part of the .bss section of the executable. There will be | |
3036 | an entry for this symbol in the .dynsym section. The dynamic | |
3037 | object will contain position independent code, so all references | |
3038 | from the dynamic object to this symbol will go through the global | |
3039 | offset table. The dynamic linker will use the .dynsym entry to | |
3040 | determine the address it must put in the global offset table, so | |
3041 | both the dynamic object and the regular object will refer to the | |
3042 | same memory location for the variable. */ | |
3043 | ||
3d4d4302 | 3044 | s = bfd_get_linker_section (dynobj, ".dynbss"); |
915e5146 HPN |
3045 | BFD_ASSERT (s != NULL); |
3046 | ||
3047 | /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to | |
3048 | copy the initial value out of the dynamic object and into the | |
3049 | runtime process image. We need to remember the offset into the | |
3050 | .rela.bss section we are going to use. */ | |
1d7e9d18 | 3051 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
915e5146 HPN |
3052 | { |
3053 | asection *srel; | |
3054 | ||
3d4d4302 | 3055 | srel = bfd_get_linker_section (dynobj, ".rela.bss"); |
915e5146 | 3056 | BFD_ASSERT (srel != NULL); |
eea6121a | 3057 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 3058 | h->needs_copy = 1; |
915e5146 HPN |
3059 | } |
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 | |
1049f94e | 3146 | if (info->relocatable) |
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. */ | |
3186 | h->root.non_ir_ref = 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 | { | |
3236 | (*_bfd_error_handler) | |
3237 | (_("%B, section %A:\n v10/v32 compatible object %s" | |
3238 | " must not contain a PIC relocation"), | |
3239 | abfd, sec); | |
3240 | return FALSE; | |
3241 | } | |
6dd38d79 | 3242 | } |
bac23f82 | 3243 | |
6dd38d79 HPN |
3244 | if (sgot == NULL) |
3245 | { | |
3246 | /* We may have a dynobj but no .got section, if machine- | |
3247 | independent parts of the linker found a reason to create | |
3248 | a dynobj. We want to create the .got section now, so we | |
3249 | can assume it's always present whenever there's a dynobj. | |
3250 | It's ok to call this function more than once. */ | |
915e5146 | 3251 | if (!_bfd_elf_create_got_section (dynobj, info)) |
b34976b6 | 3252 | return FALSE; |
100382c7 | 3253 | |
6dd38d79 HPN |
3254 | sgot = bfd_get_linker_section (dynobj, ".got"); |
3255 | } | |
100382c7 HPN |
3256 | |
3257 | if (local_got_refcounts == NULL) | |
3258 | { | |
3259 | bfd_size_type amt; | |
3260 | ||
3261 | /* We use index local_got_refcounts[-1] to count all | |
3262 | GOT-relative relocations that do not have explicit | |
3263 | GOT entries. */ | |
3264 | amt = LGOT_ALLOC_NELTS_FOR (symtab_hdr->sh_info) + 1; | |
3265 | amt *= sizeof (bfd_signed_vma); | |
3266 | local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt)); | |
3267 | if (local_got_refcounts == NULL) | |
3268 | return FALSE; | |
3269 | ||
3270 | local_got_refcounts++; | |
3271 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
3272 | } | |
915e5146 HPN |
3273 | break; |
3274 | ||
3275 | default: | |
3276 | break; | |
3277 | } | |
3278 | ||
3279 | /* Some relocs require a global offset table (but perhaps not a | |
3280 | specific GOT entry). */ | |
4d96d128 | 3281 | switch (r_type) |
915e5146 | 3282 | { |
100382c7 HPN |
3283 | case R_CRIS_16_DTPREL: |
3284 | case R_CRIS_32_DTPREL: | |
3285 | /* Not requesting .got.rela for an executable: the contents | |
3286 | of the first entry is constant there. For a shared | |
3287 | library, we need .got.rela for the R_CRIS_DTPMOD | |
3288 | relocation at index 3. */ | |
3289 | if (!info->shared) | |
3290 | break; | |
3291 | /* Fall through. */ | |
3292 | ||
75f500d7 | 3293 | case R_CRIS_32_IE: |
100382c7 HPN |
3294 | case R_CRIS_32_GD: |
3295 | case R_CRIS_16_GOT_GD: | |
3296 | case R_CRIS_32_GOT_GD: | |
3297 | case R_CRIS_32_GOT_TPREL: | |
3298 | case R_CRIS_16_GOT_TPREL: | |
3299 | /* Fall through. */ | |
3300 | ||
44aa49bb HPN |
3301 | /* For R_CRIS_16_GOTPLT and R_CRIS_32_GOTPLT, we need a GOT |
3302 | entry only for local symbols. Unfortunately, we don't know | |
3303 | until later on if there's a version script that forces the | |
3304 | symbol local. We must have the .rela.got section in place | |
3305 | before we know if the symbol looks global now, so we need | |
3306 | to treat the reloc just like for R_CRIS_16_GOT and | |
3307 | R_CRIS_32_GOT. */ | |
3308 | case R_CRIS_16_GOTPLT: | |
3309 | case R_CRIS_32_GOTPLT: | |
915e5146 HPN |
3310 | case R_CRIS_16_GOT: |
3311 | case R_CRIS_32_GOT: | |
44aa49bb HPN |
3312 | if (srelgot == NULL |
3313 | && (h != NULL || info->shared)) | |
3314 | { | |
3d4d4302 | 3315 | srelgot = bfd_get_linker_section (dynobj, ".rela.got"); |
44aa49bb HPN |
3316 | if (srelgot == NULL) |
3317 | { | |
3d4d4302 AM |
3318 | flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS |
3319 | | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
3320 | | SEC_READONLY); | |
3321 | srelgot = bfd_make_section_anyway_with_flags (dynobj, | |
3322 | ".rela.got", | |
3323 | flags); | |
44aa49bb | 3324 | if (srelgot == NULL |
44aa49bb | 3325 | || !bfd_set_section_alignment (dynobj, srelgot, 2)) |
b34976b6 | 3326 | return FALSE; |
44aa49bb HPN |
3327 | } |
3328 | } | |
100382c7 | 3329 | break; |
44aa49bb | 3330 | |
100382c7 HPN |
3331 | default: |
3332 | break; | |
3333 | } | |
915e5146 | 3334 | |
100382c7 HPN |
3335 | /* Warn and error for invalid input. */ |
3336 | switch (r_type) | |
3337 | { | |
75f500d7 | 3338 | case R_CRIS_32_IE: |
100382c7 HPN |
3339 | case R_CRIS_32_TPREL: |
3340 | case R_CRIS_16_TPREL: | |
3341 | case R_CRIS_32_GD: | |
3342 | if (info->shared) | |
915e5146 | 3343 | { |
100382c7 HPN |
3344 | (*_bfd_error_handler) |
3345 | (_("%B, section %A:\n relocation %s not valid" | |
3346 | " in a shared object;" | |
3347 | " typically an option mixup, recompile with -fPIC"), | |
3348 | abfd, | |
3349 | sec, | |
3350 | cris_elf_howto_table[r_type].name); | |
3351 | /* Don't return FALSE here; we want messages for all of | |
3352 | these and the error behavior is ungraceful | |
3353 | anyway. */ | |
3354 | } | |
3355 | default: | |
3356 | break; | |
3357 | } | |
915e5146 | 3358 | |
100382c7 HPN |
3359 | switch (r_type) |
3360 | { | |
3361 | case R_CRIS_32_GD: | |
3362 | case R_CRIS_16_GOT_GD: | |
3363 | case R_CRIS_32_GOT_GD: | |
3364 | /* These are requests for tls_index entries, run-time R_CRIS_DTP. */ | |
3365 | got_element_size = 8; | |
3366 | r_symndx_lgot = LGOT_DTP_NDX (r_symndx); | |
3367 | break; | |
915e5146 | 3368 | |
100382c7 HPN |
3369 | case R_CRIS_16_DTPREL: |
3370 | case R_CRIS_32_DTPREL: | |
3371 | /* These two just request for the constant-index | |
3372 | module-local tls_index-sized GOT entry, which we add | |
3373 | elsewhere. */ | |
915e5146 HPN |
3374 | break; |
3375 | ||
75f500d7 | 3376 | case R_CRIS_32_IE: |
100382c7 HPN |
3377 | case R_CRIS_32_GOT_TPREL: |
3378 | case R_CRIS_16_GOT_TPREL: | |
3379 | r_symndx_lgot = LGOT_TPREL_NDX (r_symndx); | |
3380 | ||
75f500d7 | 3381 | /* Those relocs also require that a DSO is of type |
100382c7 HPN |
3382 | Initial Exec. Like other targets, we don't reset this |
3383 | flag even if the relocs are GC:ed away. */ | |
3384 | if (info->shared) | |
3385 | info->flags |= DF_STATIC_TLS; | |
3386 | break; | |
3387 | ||
3388 | /* Let's list the other assembler-generated TLS-relocs too, | |
3389 | just to show that they're not forgotten. */ | |
3390 | case R_CRIS_16_TPREL: | |
3391 | case R_CRIS_32_TPREL: | |
915e5146 HPN |
3392 | default: |
3393 | break; | |
3394 | } | |
3395 | ||
4d96d128 | 3396 | switch (r_type) |
06c15ad7 | 3397 | { |
915e5146 HPN |
3398 | case R_CRIS_16_GOTPLT: |
3399 | case R_CRIS_32_GOTPLT: | |
3400 | /* Mark that we need a GOT entry if the PLT entry (and its GOT | |
3401 | entry) is eliminated. We can only do this for a non-local | |
3402 | symbol. */ | |
3403 | if (h != NULL) | |
3404 | { | |
100382c7 | 3405 | elf_cris_hash_entry (h)->gotplt_refcount++; |
915e5146 HPN |
3406 | goto handle_gotplt_reloc; |
3407 | } | |
3408 | /* If h is NULL then this is a local symbol, and we must make a | |
3409 | GOT entry for it, so handle it like a GOT reloc. */ | |
3410 | /* Fall through. */ | |
3411 | ||
75f500d7 | 3412 | case R_CRIS_32_IE: |
100382c7 HPN |
3413 | case R_CRIS_32_GD: |
3414 | case R_CRIS_16_GOT_GD: | |
3415 | case R_CRIS_32_GOT_GD: | |
3416 | case R_CRIS_32_GOT_TPREL: | |
3417 | case R_CRIS_16_GOT_TPREL: | |
915e5146 HPN |
3418 | case R_CRIS_16_GOT: |
3419 | case R_CRIS_32_GOT: | |
3420 | /* This symbol requires a global offset table entry. */ | |
915e5146 HPN |
3421 | if (h != NULL) |
3422 | { | |
51b64d56 | 3423 | if (h->got.refcount == 0) |
915e5146 | 3424 | { |
915e5146 HPN |
3425 | /* Make sure this symbol is output as a dynamic symbol. */ |
3426 | if (h->dynindx == -1) | |
3427 | { | |
c152c796 | 3428 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 3429 | return FALSE; |
915e5146 | 3430 | } |
915e5146 | 3431 | } |
100382c7 HPN |
3432 | |
3433 | /* Update the sum of reloc counts for this symbol. */ | |
51b64d56 | 3434 | h->got.refcount++; |
100382c7 HPN |
3435 | |
3436 | switch (r_type) | |
3437 | { | |
3438 | case R_CRIS_16_GOT: | |
3439 | case R_CRIS_32_GOT: | |
3440 | if (elf_cris_hash_entry (h)->reg_got_refcount == 0) | |
3441 | { | |
3442 | /* Allocate space in the .got section. */ | |
3443 | sgot->size += got_element_size; | |
3444 | /* Allocate relocation space. */ | |
3445 | srelgot->size += sizeof (Elf32_External_Rela); | |
3446 | } | |
3447 | elf_cris_hash_entry (h)->reg_got_refcount++; | |
3448 | break; | |
3449 | ||
3450 | case R_CRIS_32_GD: | |
3451 | case R_CRIS_16_GOT_GD: | |
3452 | case R_CRIS_32_GOT_GD: | |
3453 | if (elf_cris_hash_entry (h)->dtp_refcount == 0) | |
3454 | { | |
3455 | /* Allocate space in the .got section. */ | |
3456 | sgot->size += got_element_size; | |
3457 | /* Allocate relocation space. */ | |
3458 | srelgot->size += sizeof (Elf32_External_Rela); | |
3459 | } | |
3460 | elf_cris_hash_entry (h)->dtp_refcount++; | |
3461 | break; | |
3462 | ||
75f500d7 | 3463 | case R_CRIS_32_IE: |
100382c7 HPN |
3464 | case R_CRIS_32_GOT_TPREL: |
3465 | case R_CRIS_16_GOT_TPREL: | |
3466 | if (elf_cris_hash_entry (h)->tprel_refcount == 0) | |
3467 | { | |
3468 | /* Allocate space in the .got section. */ | |
3469 | sgot->size += got_element_size; | |
3470 | /* Allocate relocation space. */ | |
3471 | srelgot->size += sizeof (Elf32_External_Rela); | |
3472 | } | |
3473 | elf_cris_hash_entry (h)->tprel_refcount++; | |
3474 | break; | |
3475 | ||
3476 | default: | |
3477 | BFD_FAIL (); | |
3478 | break; | |
3479 | } | |
915e5146 HPN |
3480 | } |
3481 | else | |
3482 | { | |
3483 | /* This is a global offset table entry for a local symbol. */ | |
100382c7 | 3484 | if (local_got_refcounts[r_symndx_lgot] == 0) |
915e5146 | 3485 | { |
100382c7 | 3486 | sgot->size += got_element_size; |
915e5146 HPN |
3487 | if (info->shared) |
3488 | { | |
100382c7 HPN |
3489 | /* If we are generating a shared object, we need |
3490 | to output a R_CRIS_RELATIVE reloc so that the | |
3491 | dynamic linker can adjust this GOT entry. | |
3492 | Similarly for non-regular got entries. */ | |
eea6121a | 3493 | srelgot->size += sizeof (Elf32_External_Rela); |
915e5146 HPN |
3494 | } |
3495 | } | |
100382c7 HPN |
3496 | /* Update the reloc-specific count. */ |
3497 | local_got_refcounts[r_symndx_lgot]++; | |
3498 | ||
3499 | /* This one is the sum of all the others. */ | |
51b64d56 | 3500 | local_got_refcounts[r_symndx]++; |
915e5146 HPN |
3501 | } |
3502 | break; | |
3503 | ||
100382c7 HPN |
3504 | case R_CRIS_16_DTPREL: |
3505 | case R_CRIS_32_DTPREL: | |
915e5146 HPN |
3506 | case R_CRIS_32_GOTREL: |
3507 | /* This reference requires a global offset table. | |
3508 | FIXME: The actual refcount isn't used currently; the .got | |
3509 | section can't be removed if there were any references in the | |
3510 | input. */ | |
3511 | local_got_refcounts[-1]++; | |
3512 | break; | |
3513 | ||
3514 | handle_gotplt_reloc: | |
3515 | ||
3516 | case R_CRIS_32_PLT_GOTREL: | |
3517 | /* This reference requires a global offset table. */ | |
3518 | local_got_refcounts[-1]++; | |
3519 | /* Fall through. */ | |
3520 | ||
3521 | case R_CRIS_32_PLT_PCREL: | |
3522 | /* This symbol requires a procedure linkage table entry. We | |
3523 | actually build the entry in adjust_dynamic_symbol, | |
3524 | because this might be a case of linking PIC code which is | |
3525 | never referenced by a dynamic object, in which case we | |
3526 | don't need to generate a procedure linkage table entry | |
3527 | after all. */ | |
3528 | ||
ada1953e HPN |
3529 | /* Beware: if we'd check for visibility of the symbol here |
3530 | (and not marking the need for a PLT when non-visible), we'd | |
3531 | get into trouble with keeping handling consistent with | |
3532 | regards to relocs found before definition and GOTPLT | |
3533 | handling. Eliminable PLT entries will be dealt with later | |
3534 | anyway. */ | |
3535 | if (h == NULL) | |
915e5146 HPN |
3536 | continue; |
3537 | ||
f5385ebf | 3538 | h->needs_plt = 1; |
51b64d56 | 3539 | h->plt.refcount++; |
915e5146 HPN |
3540 | break; |
3541 | ||
3542 | case R_CRIS_8: | |
3543 | case R_CRIS_16: | |
3544 | case R_CRIS_32: | |
3545 | /* Let's help debug shared library creation. Any of these | |
0d08de41 HPN |
3546 | relocs *can* be used in shared libs, but pages containing |
3547 | them cannot be shared, so they're not appropriate for | |
3548 | common use. Don't warn for sections we don't care about, | |
3549 | such as debug sections or non-constant sections. We | |
3550 | can't help tables of (global) function pointers, for | |
3551 | example, though they must be emitted in a (writable) data | |
3552 | section to avoid having impure text sections. */ | |
915e5146 HPN |
3553 | if (info->shared |
3554 | && (sec->flags & SEC_ALLOC) != 0 | |
3555 | && (sec->flags & SEC_READONLY) != 0) | |
3556 | { | |
3557 | /* FIXME: How do we make this optionally a warning only? */ | |
8f615d07 | 3558 | (*_bfd_error_handler) |
bac23f82 HPN |
3559 | (_("%B, section %A:\n relocation %s should not" |
3560 | " be used in a shared object; recompile with -fPIC"), | |
d003868e AM |
3561 | abfd, |
3562 | sec, | |
8f615d07 | 3563 | cris_elf_howto_table[r_type].name); |
915e5146 | 3564 | } |
28f68c73 HPN |
3565 | |
3566 | /* We don't need to handle relocs into sections not going into | |
3567 | the "real" output. */ | |
3568 | if ((sec->flags & SEC_ALLOC) == 0) | |
3569 | break; | |
3570 | ||
0d08de41 HPN |
3571 | if (h != NULL) |
3572 | { | |
3573 | h->non_got_ref = 1; | |
100382c7 | 3574 | |
0d08de41 HPN |
3575 | /* Make sure a plt entry is created for this symbol if it |
3576 | turns out to be a function defined by a dynamic object. */ | |
3577 | if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
3578 | h->plt.refcount++; | |
3579 | } | |
3580 | ||
3581 | /* If we are creating a shared library and this is not a local | |
3582 | symbol, we need to copy the reloc into the shared library. | |
3583 | However when linking with -Bsymbolic and this is a global | |
3584 | symbol which is defined in an object we are including in the | |
3585 | link (i.e., DEF_REGULAR is set), then we can resolve the | |
3586 | reloc directly. At this point we have not seen all the input | |
3587 | files, so it is possible that DEF_REGULAR is not set now but | |
3588 | will be set later (it is never cleared). In case of a weak | |
3589 | definition, DEF_REGULAR may be cleared later by a strong | |
3590 | definition in a shared library. We account for that | |
3591 | possibility below by storing information in the relocs_copied | |
3592 | field of the hash table entry. A similar situation occurs | |
3593 | when creating shared libraries and symbol visibility changes | |
3594 | render the symbol local. */ | |
3595 | ||
3596 | /* No need to do anything if we're not creating a shared object. */ | |
3597 | if (! info->shared) | |
3598 | break; | |
3599 | ||
0d08de41 HPN |
3600 | /* We may need to create a reloc section in the dynobj and made room |
3601 | for this reloc. */ | |
3602 | if (sreloc == NULL) | |
3603 | { | |
3604 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
3605 | (sec, dynobj, 2, abfd, /*rela?*/ TRUE); | |
3606 | ||
3607 | if (sreloc == NULL) | |
3608 | return FALSE; | |
3609 | } | |
3610 | ||
3611 | if (sec->flags & SEC_READONLY) | |
3612 | info->flags |= DF_TEXTREL; | |
3613 | ||
3614 | sreloc->size += sizeof (Elf32_External_Rela); | |
3615 | break; | |
915e5146 HPN |
3616 | |
3617 | case R_CRIS_8_PCREL: | |
3618 | case R_CRIS_16_PCREL: | |
3619 | case R_CRIS_32_PCREL: | |
3620 | if (h != NULL) | |
3621 | { | |
f5385ebf | 3622 | h->non_got_ref = 1; |
915e5146 HPN |
3623 | |
3624 | /* Make sure a plt entry is created for this symbol if it | |
3625 | turns out to be a function defined by a dynamic object. */ | |
0a4787a0 HPN |
3626 | if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) |
3627 | h->plt.refcount++; | |
915e5146 HPN |
3628 | } |
3629 | ||
3630 | /* If we are creating a shared library and this is not a local | |
3631 | symbol, we need to copy the reloc into the shared library. | |
3632 | However when linking with -Bsymbolic and this is a global | |
3633 | symbol which is defined in an object we are including in the | |
3634 | link (i.e., DEF_REGULAR is set), then we can resolve the | |
3635 | reloc directly. At this point we have not seen all the input | |
3636 | files, so it is possible that DEF_REGULAR is not set now but | |
3637 | will be set later (it is never cleared). In case of a weak | |
3638 | definition, DEF_REGULAR may be cleared later by a strong | |
3639 | definition in a shared library. We account for that | |
3640 | possibility below by storing information in the relocs_copied | |
3641 | field of the hash table entry. A similar situation occurs | |
3642 | when creating shared libraries and symbol visibility changes | |
3643 | render the symbol local. */ | |
3644 | ||
3645 | /* No need to do anything if we're not creating a shared object. */ | |
3646 | if (! info->shared) | |
3647 | break; | |
3648 | ||
3649 | /* We don't need to handle relocs into sections not going into | |
3650 | the "real" output. */ | |
3651 | if ((sec->flags & SEC_ALLOC) == 0) | |
3652 | break; | |
3653 | ||
0d08de41 HPN |
3654 | /* If the symbol is local, then we know already we can |
3655 | eliminate the reloc. */ | |
3656 | if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
3657 | break; | |
bac23f82 | 3658 | |
0d08de41 HPN |
3659 | /* If this is with -Bsymbolic and the symbol isn't weak, and |
3660 | is defined by an ordinary object (the ones we include in | |
3661 | this shared library) then we can also eliminate the | |
3662 | reloc. See comment above for more eliminable cases which | |
3663 | we can't identify at this time. */ | |
3664 | if (info->symbolic | |
3665 | && h->root.type != bfd_link_hash_defweak | |
3666 | && h->def_regular) | |
3667 | break; | |
915e5146 | 3668 | |
83bac4b0 NC |
3669 | /* We may need to create a reloc section in the dynobj and made room |
3670 | for this reloc. */ | |
915e5146 HPN |
3671 | if (sreloc == NULL) |
3672 | { | |
83bac4b0 NC |
3673 | sreloc = _bfd_elf_make_dynamic_reloc_section |
3674 | (sec, dynobj, 2, abfd, /*rela?*/ TRUE); | |
915e5146 | 3675 | |
83bac4b0 | 3676 | if (sreloc == NULL) |
b34976b6 | 3677 | return FALSE; |
915e5146 HPN |
3678 | } |
3679 | ||
eea6121a | 3680 | sreloc->size += sizeof (Elf32_External_Rela); |
915e5146 | 3681 | |
0d08de41 HPN |
3682 | /* We count the number of PC relative relocations we have |
3683 | entered for this symbol, so that we can discard them | |
3684 | again if the symbol is later defined by a regular object. | |
3685 | We know that h is really a pointer to an | |
915e5146 | 3686 | elf_cris_link_hash_entry. */ |
0d08de41 HPN |
3687 | { |
3688 | struct elf_cris_link_hash_entry *eh; | |
3689 | struct elf_cris_pcrel_relocs_copied *p; | |
915e5146 | 3690 | |
0d08de41 | 3691 | eh = elf_cris_hash_entry (h); |
915e5146 | 3692 | |
0d08de41 | 3693 | for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next) |
bfbff9eb | 3694 | if (p->section == sec) |
0d08de41 | 3695 | break; |
915e5146 | 3696 | |
0d08de41 HPN |
3697 | if (p == NULL) |
3698 | { | |
3699 | p = ((struct elf_cris_pcrel_relocs_copied *) | |
3700 | bfd_alloc (dynobj, (bfd_size_type) sizeof *p)); | |
3701 | if (p == NULL) | |
3702 | return FALSE; | |
3703 | p->next = eh->pcrel_relocs_copied; | |
3704 | eh->pcrel_relocs_copied = p; | |
bfbff9eb | 3705 | p->section = sec; |
0d08de41 HPN |
3706 | p->count = 0; |
3707 | p->r_type = r_type; | |
3708 | } | |
915e5146 | 3709 | |
0d08de41 HPN |
3710 | ++p->count; |
3711 | } | |
915e5146 HPN |
3712 | break; |
3713 | ||
06c15ad7 HPN |
3714 | /* This relocation describes the C++ object vtable hierarchy. |
3715 | Reconstruct it for later use during GC. */ | |
3716 | case R_CRIS_GNU_VTINHERIT: | |
c152c796 | 3717 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 3718 | return FALSE; |
06c15ad7 | 3719 | break; |
a7c10850 | 3720 | |
06c15ad7 HPN |
3721 | /* This relocation describes which C++ vtable entries are actually |
3722 | used. Record for later use during GC. */ | |
3723 | case R_CRIS_GNU_VTENTRY: | |
d17e0c6e JB |
3724 | BFD_ASSERT (h != NULL); |
3725 | if (h != NULL | |
3726 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 3727 | return FALSE; |
06c15ad7 | 3728 | break; |
4d96d128 | 3729 | |
100382c7 HPN |
3730 | case R_CRIS_16_TPREL: |
3731 | case R_CRIS_32_TPREL: | |
3732 | /* Already warned above, when necessary. */ | |
3733 | break; | |
3734 | ||
4d96d128 HPN |
3735 | default: |
3736 | /* Other relocs do not appear here. */ | |
3737 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 3738 | return FALSE; |
06c15ad7 HPN |
3739 | } |
3740 | } | |
a7c10850 | 3741 | |
b34976b6 | 3742 | return TRUE; |
06c15ad7 | 3743 | } |
4da81684 | 3744 | |
915e5146 HPN |
3745 | /* Set the sizes of the dynamic sections. */ |
3746 | ||
b34976b6 | 3747 | static bfd_boolean |
4dfe6ac6 NC |
3748 | elf_cris_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
3749 | struct bfd_link_info *info) | |
915e5146 | 3750 | { |
4dfe6ac6 | 3751 | struct elf_cris_link_hash_table * htab; |
915e5146 HPN |
3752 | bfd *dynobj; |
3753 | asection *s; | |
b34976b6 AM |
3754 | bfd_boolean plt; |
3755 | bfd_boolean relocs; | |
915e5146 | 3756 | |
4dfe6ac6 NC |
3757 | htab = elf_cris_hash_table (info); |
3758 | if (htab == NULL) | |
3759 | return FALSE; | |
3760 | ||
915e5146 HPN |
3761 | dynobj = elf_hash_table (info)->dynobj; |
3762 | BFD_ASSERT (dynobj != NULL); | |
3763 | ||
3764 | if (elf_hash_table (info)->dynamic_sections_created) | |
3765 | { | |
3766 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 3767 | if (info->executable) |
915e5146 | 3768 | { |
3d4d4302 | 3769 | s = bfd_get_linker_section (dynobj, ".interp"); |
915e5146 | 3770 | BFD_ASSERT (s != NULL); |
eea6121a | 3771 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
915e5146 HPN |
3772 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
3773 | } | |
3774 | } | |
3775 | else | |
3776 | { | |
3777 | /* Adjust all expected GOTPLT uses to use a GOT entry instead. */ | |
4dfe6ac6 NC |
3778 | elf_cris_link_hash_traverse (htab, elf_cris_adjust_gotplt_to_got, |
3779 | info); | |
915e5146 HPN |
3780 | |
3781 | /* We may have created entries in the .rela.got section. | |
3782 | However, if we are not creating the dynamic sections, we will | |
3783 | not actually use these entries. Reset the size of .rela.got, | |
3784 | which will cause it to get stripped from the output file | |
3785 | below. */ | |
3d4d4302 | 3786 | s = bfd_get_linker_section (dynobj, ".rela.got"); |
915e5146 | 3787 | if (s != NULL) |
eea6121a | 3788 | s->size = 0; |
915e5146 HPN |
3789 | } |
3790 | ||
3791 | /* If this is a -Bsymbolic shared link, then we need to discard all PC | |
3792 | relative relocs against symbols defined in a regular object. We | |
3793 | allocated space for them in the check_relocs routine, but we will not | |
3794 | fill them in in the relocate_section routine. We also discard space | |
3795 | for relocs that have become for local symbols due to symbol | |
4d96d128 HPN |
3796 | visibility changes. For programs, we discard space for relocs for |
3797 | symbols not referenced by any dynamic object. */ | |
915e5146 | 3798 | if (info->shared) |
4dfe6ac6 | 3799 | elf_cris_link_hash_traverse (htab, |
4d96d128 | 3800 | elf_cris_discard_excess_dso_dynamics, |
4dfe6ac6 | 3801 | info); |
4d96d128 | 3802 | else |
4dfe6ac6 | 3803 | elf_cris_link_hash_traverse (htab, |
4d96d128 | 3804 | elf_cris_discard_excess_program_dynamics, |
4dfe6ac6 | 3805 | info); |
915e5146 HPN |
3806 | |
3807 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
3808 | determined the sizes of the various dynamic sections. Allocate | |
3809 | memory for them. */ | |
b34976b6 AM |
3810 | plt = FALSE; |
3811 | relocs = FALSE; | |
915e5146 HPN |
3812 | for (s = dynobj->sections; s != NULL; s = s->next) |
3813 | { | |
3814 | const char *name; | |
915e5146 HPN |
3815 | |
3816 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
3817 | continue; | |
3818 | ||
3819 | /* It's OK to base decisions on the section name, because none | |
3820 | of the dynobj section names depend upon the input files. */ | |
3821 | name = bfd_get_section_name (dynobj, s); | |
3822 | ||
915e5146 HPN |
3823 | if (strcmp (name, ".plt") == 0) |
3824 | { | |
c456f082 AM |
3825 | /* Remember whether there is a PLT. */ |
3826 | plt = s->size != 0; | |
915e5146 | 3827 | } |
100382c7 HPN |
3828 | else if (strcmp (name, ".got.plt") == 0) |
3829 | { | |
3830 | /* The .got.plt contains the .got header as well as the | |
3831 | actual .got.plt contents. The .got header may contain a | |
3832 | R_CRIS_DTPMOD entry at index 3. */ | |
4dfe6ac6 | 3833 | s->size += htab->dtpmod_refcount != 0 |
100382c7 HPN |
3834 | ? 8 : 0; |
3835 | } | |
0112cd26 | 3836 | else if (CONST_STRNEQ (name, ".rela")) |
915e5146 | 3837 | { |
100382c7 | 3838 | if (strcmp (name, ".rela.got") == 0 |
4dfe6ac6 | 3839 | && htab->dtpmod_refcount != 0 |
100382c7 HPN |
3840 | && info->shared) |
3841 | s->size += sizeof (Elf32_External_Rela); | |
3842 | ||
c456f082 | 3843 | if (s->size != 0) |
915e5146 | 3844 | { |
915e5146 HPN |
3845 | /* Remember whether there are any reloc sections other |
3846 | than .rela.plt. */ | |
3847 | if (strcmp (name, ".rela.plt") != 0) | |
b34976b6 | 3848 | relocs = TRUE; |
915e5146 | 3849 | |
915e5146 HPN |
3850 | /* We use the reloc_count field as a counter if we need |
3851 | to copy relocs into the output file. */ | |
3852 | s->reloc_count = 0; | |
3853 | } | |
3854 | } | |
0112cd26 | 3855 | else if (! CONST_STRNEQ (name, ".got") |
c456f082 | 3856 | && strcmp (name, ".dynbss") != 0) |
915e5146 HPN |
3857 | { |
3858 | /* It's not one of our sections, so don't allocate space. */ | |
3859 | continue; | |
3860 | } | |
3861 | ||
c456f082 | 3862 | if (s->size == 0) |
915e5146 | 3863 | { |
c456f082 AM |
3864 | /* If we don't need this section, strip it from the |
3865 | output file. This is mostly to handle .rela.bss and | |
3866 | .rela.plt. We must create both sections in | |
3867 | create_dynamic_sections, because they must be created | |
3868 | before the linker maps input sections to output | |
3869 | sections. The linker does that before | |
3870 | adjust_dynamic_symbol is called, and it is that | |
3871 | function which decides whether anything needs to go | |
3872 | into these sections. */ | |
8423293d | 3873 | s->flags |= SEC_EXCLUDE; |
915e5146 HPN |
3874 | continue; |
3875 | } | |
3876 | ||
c456f082 AM |
3877 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
3878 | continue; | |
3879 | ||
915e5146 HPN |
3880 | /* Allocate memory for the section contents. We use bfd_zalloc here |
3881 | in case unused entries are not reclaimed before the section's | |
3882 | contents are written out. This should not happen, but this way | |
3883 | if it does, we will not write out garbage. For reloc sections, | |
3884 | this will make entries have the type R_CRIS_NONE. */ | |
eea6121a | 3885 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
c456f082 | 3886 | if (s->contents == NULL) |
b34976b6 | 3887 | return FALSE; |
915e5146 HPN |
3888 | } |
3889 | ||
3890 | if (elf_hash_table (info)->dynamic_sections_created) | |
3891 | { | |
3892 | /* Add some entries to the .dynamic section. We fill in the | |
3893 | values later, in elf_cris_finish_dynamic_sections, but we | |
3894 | must add the entries now so that we get the correct size for | |
3895 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
3896 | dynamic linker and used by the debugger. */ | |
dc810e39 | 3897 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 3898 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 3899 | |
915e5146 HPN |
3900 | if (!info->shared) |
3901 | { | |
dc810e39 | 3902 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 3903 | return FALSE; |
915e5146 HPN |
3904 | } |
3905 | ||
3906 | if (plt) | |
3907 | { | |
dc810e39 AM |
3908 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
3909 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
3910 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
3911 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 3912 | return FALSE; |
915e5146 HPN |
3913 | } |
3914 | ||
3915 | if (relocs) | |
3916 | { | |
dc810e39 AM |
3917 | if (!add_dynamic_entry (DT_RELA, 0) |
3918 | || !add_dynamic_entry (DT_RELASZ, 0) | |
3919 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 3920 | return FALSE; |
915e5146 HPN |
3921 | } |
3922 | ||
99e4ae17 | 3923 | if ((info->flags & DF_TEXTREL) != 0) |
915e5146 | 3924 | { |
dc810e39 | 3925 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 3926 | return FALSE; |
915e5146 HPN |
3927 | info->flags |= DF_TEXTREL; |
3928 | } | |
3929 | } | |
dc810e39 | 3930 | #undef add_dynamic_entry |
915e5146 | 3931 | |
b34976b6 | 3932 | return TRUE; |
915e5146 HPN |
3933 | } |
3934 | ||
3935 | /* This function is called via elf_cris_link_hash_traverse if we are | |
3936 | creating a shared object. In the -Bsymbolic case, it discards the | |
3937 | space allocated to copy PC relative relocs against symbols which | |
3938 | are defined in regular objects. For the normal non-symbolic case, | |
3939 | we also discard space for relocs that have become local due to | |
3940 | symbol visibility changes. We allocated space for them in the | |
3941 | check_relocs routine, but we won't fill them in in the | |
3942 | relocate_section routine. */ | |
3943 | ||
b34976b6 | 3944 | static bfd_boolean |
2c3fc389 NC |
3945 | elf_cris_discard_excess_dso_dynamics (struct elf_cris_link_hash_entry *h, |
3946 | void * inf) | |
915e5146 HPN |
3947 | { |
3948 | struct elf_cris_pcrel_relocs_copied *s; | |
3949 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
3950 | ||
3951 | /* If a symbol has been forced local or we have found a regular | |
3952 | definition for the symbolic link case, then we won't be needing | |
3953 | any relocs. */ | |
f5385ebf AM |
3954 | if (h->root.def_regular |
3955 | && (h->root.forced_local | |
915e5146 HPN |
3956 | || info->symbolic)) |
3957 | { | |
3958 | for (s = h->pcrel_relocs_copied; s != NULL; s = s->next) | |
bfbff9eb HPN |
3959 | { |
3960 | asection *sreloc | |
e236b51d HPN |
3961 | = _bfd_elf_get_dynamic_reloc_section (elf_hash_table (info) |
3962 | ->dynobj, | |
bfbff9eb HPN |
3963 | s->section, |
3964 | /*rela?*/ TRUE); | |
3965 | sreloc->size -= s->count * sizeof (Elf32_External_Rela); | |
3966 | } | |
0d08de41 HPN |
3967 | return TRUE; |
3968 | } | |
3969 | ||
3970 | /* If we have accounted for PC-relative relocs for read-only | |
3971 | sections, now is the time to warn for them. We can't do it in | |
3972 | cris_elf_check_relocs, because we don't know the status of all | |
3973 | symbols at that time (and it's common to force symbols local | |
3974 | late). */ | |
3975 | ||
3976 | for (s = h->pcrel_relocs_copied; s != NULL; s = s->next) | |
bfbff9eb HPN |
3977 | if ((s->section->flags & SEC_READONLY) != 0) |
3978 | { | |
3979 | /* FIXME: How do we make this optionally a warning only? */ | |
3980 | (*_bfd_error_handler) | |
3981 | (_("%B, section `%A', to symbol `%s':\n" | |
3982 | " relocation %s should not be used" | |
3983 | " in a shared object; recompile with -fPIC"), | |
3984 | s->section->owner, | |
3985 | s->section, | |
3986 | h->root.root.root.string, | |
3987 | cris_elf_howto_table[s->r_type].name); | |
3988 | ||
3989 | info->flags |= DF_TEXTREL; | |
3990 | } | |
4d96d128 | 3991 | |
b34976b6 | 3992 | return TRUE; |
4d96d128 HPN |
3993 | } |
3994 | ||
3995 | /* This function is called via elf_cris_link_hash_traverse if we are *not* | |
3996 | creating a shared object. We discard space for relocs for symbols put | |
3997 | in the .got, but which we found we do not have to resolve at run-time. */ | |
3998 | ||
b34976b6 | 3999 | static bfd_boolean |
2c3fc389 NC |
4000 | elf_cris_discard_excess_program_dynamics (struct elf_cris_link_hash_entry *h, |
4001 | void * inf) | |
4d96d128 HPN |
4002 | { |
4003 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
4004 | ||
4005 | /* If we're not creating a shared library and have a symbol which is | |
4006 | referred to by .got references, but the symbol is defined locally, | |
e4a2175c HPN |
4007 | (or rather, not defined by a DSO) then lose the reloc for the .got |
4008 | (don't allocate room for it). Likewise for relocs for something | |
4009 | for which we create a PLT. */ | |
f5385ebf | 4010 | if (!h->root.def_dynamic |
e4a2175c | 4011 | || h->root.plt.refcount > 0) |
4d96d128 | 4012 | { |
100382c7 | 4013 | if (h->reg_got_refcount > 0 |
4d96d128 HPN |
4014 | /* The size of this section is only valid and in sync with the |
4015 | various reference counts if we do dynamic; don't decrement it | |
4016 | otherwise. */ | |
4017 | && elf_hash_table (info)->dynamic_sections_created) | |
4018 | { | |
4019 | bfd *dynobj = elf_hash_table (info)->dynobj; | |
4020 | asection *srelgot; | |
4021 | ||
4022 | BFD_ASSERT (dynobj != NULL); | |
99c79b2e | 4023 | |
3d4d4302 | 4024 | srelgot = bfd_get_linker_section (dynobj, ".rela.got"); |
4d96d128 HPN |
4025 | |
4026 | BFD_ASSERT (srelgot != NULL); | |
4027 | ||
eea6121a | 4028 | srelgot->size -= sizeof (Elf32_External_Rela); |
4d96d128 HPN |
4029 | } |
4030 | ||
4031 | /* If the locally-defined symbol isn't used by a DSO, then we don't | |
4032 | have to export it as a dynamic symbol. This was already done for | |
4033 | functions; doing this for all symbols would presumably not | |
e5dfef09 HPN |
4034 | introduce new problems. Of course we don't do this if we're |
4035 | exporting all dynamic symbols. */ | |
0741c7be | 4036 | if (! info->export_dynamic |
77cfaee6 | 4037 | && h->root.dynindx != -1 |
f5385ebf AM |
4038 | && !h->root.def_dynamic |
4039 | && !h->root.ref_dynamic) | |
e5dfef09 HPN |
4040 | { |
4041 | h->root.dynindx = -1; | |
4042 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4043 | h->root.dynstr_index); | |
4044 | } | |
915e5146 HPN |
4045 | } |
4046 | ||
b34976b6 | 4047 | return TRUE; |
915e5146 HPN |
4048 | } |
4049 | ||
4050 | /* Reject a file depending on presence and expectation of prefixed | |
4051 | underscores on symbols. */ | |
4da81684 | 4052 | |
b34976b6 | 4053 | static bfd_boolean |
2c3fc389 | 4054 | cris_elf_object_p (bfd *abfd) |
4da81684 | 4055 | { |
bac23f82 HPN |
4056 | if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags)) |
4057 | return FALSE; | |
4058 | ||
4da81684 HPN |
4059 | if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)) |
4060 | return (bfd_get_symbol_leading_char (abfd) == '_'); | |
4061 | else | |
4062 | return (bfd_get_symbol_leading_char (abfd) == 0); | |
4063 | } | |
4064 | ||
bac23f82 HPN |
4065 | /* Mark presence or absence of leading underscore. Set machine type |
4066 | flags from mach type. */ | |
4da81684 HPN |
4067 | |
4068 | static void | |
2c3fc389 NC |
4069 | cris_elf_final_write_processing (bfd *abfd, |
4070 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
4da81684 | 4071 | { |
bac23f82 HPN |
4072 | unsigned long e_flags = elf_elfheader (abfd)->e_flags; |
4073 | ||
4074 | e_flags &= ~EF_CRIS_UNDERSCORE; | |
4da81684 | 4075 | if (bfd_get_symbol_leading_char (abfd) == '_') |
bac23f82 HPN |
4076 | e_flags |= EF_CRIS_UNDERSCORE; |
4077 | ||
4078 | switch (bfd_get_mach (abfd)) | |
4079 | { | |
4080 | case bfd_mach_cris_v0_v10: | |
4081 | e_flags |= EF_CRIS_VARIANT_ANY_V0_V10; | |
4082 | break; | |
4083 | ||
4084 | case bfd_mach_cris_v10_v32: | |
4085 | e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32; | |
4086 | break; | |
4087 | ||
4088 | case bfd_mach_cris_v32: | |
4089 | e_flags |= EF_CRIS_VARIANT_V32; | |
4090 | break; | |
4091 | ||
4092 | default: | |
4093 | _bfd_abort (__FILE__, __LINE__, | |
4094 | _("Unexpected machine number")); | |
4095 | } | |
4096 | ||
4097 | elf_elfheader (abfd)->e_flags = e_flags; | |
4098 | } | |
4099 | ||
4100 | /* Set the mach type from e_flags value. */ | |
4101 | ||
4102 | static bfd_boolean | |
2c3fc389 NC |
4103 | cris_elf_set_mach_from_flags (bfd *abfd, |
4104 | unsigned long flags) | |
bac23f82 HPN |
4105 | { |
4106 | switch (flags & EF_CRIS_VARIANT_MASK) | |
4107 | { | |
4108 | case EF_CRIS_VARIANT_ANY_V0_V10: | |
4109 | bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10); | |
4110 | break; | |
4111 | ||
4112 | case EF_CRIS_VARIANT_V32: | |
4113 | bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32); | |
4114 | break; | |
4115 | ||
4116 | case EF_CRIS_VARIANT_COMMON_V10_V32: | |
4117 | bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32); | |
4118 | break; | |
4119 | ||
4120 | default: | |
4121 | /* Since we don't recognize them, we obviously can't support them | |
4122 | with this code; we'd have to require that all future handling | |
4123 | would be optional. */ | |
4124 | bfd_set_error (bfd_error_wrong_format); | |
4125 | return FALSE; | |
4126 | } | |
4127 | ||
4128 | return TRUE; | |
4da81684 HPN |
4129 | } |
4130 | ||
4131 | /* Display the flags field. */ | |
4132 | ||
b34976b6 | 4133 | static bfd_boolean |
2c3fc389 | 4134 | cris_elf_print_private_bfd_data (bfd *abfd, void * ptr) |
4da81684 HPN |
4135 | { |
4136 | FILE *file = (FILE *) ptr; | |
4137 | ||
f12123c0 | 4138 | BFD_ASSERT (abfd != NULL && ptr != NULL); |
4da81684 HPN |
4139 | |
4140 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
4141 | ||
4142 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
4143 | ||
4144 | if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE) | |
4145 | fprintf (file, _(" [symbols have a _ prefix]")); | |
bac23f82 HPN |
4146 | if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK) |
4147 | == EF_CRIS_VARIANT_COMMON_V10_V32) | |
4148 | fprintf (file, _(" [v10 and v32]")); | |
4149 | if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK) | |
4150 | == EF_CRIS_VARIANT_V32) | |
4151 | fprintf (file, _(" [v32]")); | |
4da81684 HPN |
4152 | |
4153 | fputc ('\n', file); | |
b34976b6 | 4154 | return TRUE; |
4da81684 HPN |
4155 | } |
4156 | ||
4157 | /* Don't mix files with and without a leading underscore. */ | |
4158 | ||
b34976b6 | 4159 | static bfd_boolean |
2c3fc389 | 4160 | cris_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
4da81684 | 4161 | { |
bac23f82 | 4162 | int imach, omach; |
4da81684 | 4163 | |
82e51918 | 4164 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) |
b34976b6 | 4165 | return FALSE; |
4da81684 HPN |
4166 | |
4167 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
4168 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 4169 | return TRUE; |
4da81684 | 4170 | |
bac23f82 HPN |
4171 | imach = bfd_get_mach (ibfd); |
4172 | ||
4da81684 HPN |
4173 | if (! elf_flags_init (obfd)) |
4174 | { | |
4175 | /* This happens when ld starts out with a 'blank' output file. */ | |
b34976b6 | 4176 | elf_flags_init (obfd) = TRUE; |
4da81684 | 4177 | |
bac23f82 HPN |
4178 | /* We ignore the linker-set mach, and instead set it according to |
4179 | the first input file. This would also happen if we could | |
4180 | somehow filter out the OUTPUT_ARCH () setting from elf.sc. | |
4181 | This allows us to keep the same linker config across | |
4182 | cris(v0..v10) and crisv32. The drawback is that we can't force | |
4183 | the output type, which might be a sane thing to do for a | |
4184 | v10+v32 compatibility object. */ | |
4185 | if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach)) | |
4186 | return FALSE; | |
4da81684 HPN |
4187 | } |
4188 | ||
bac23f82 HPN |
4189 | if (bfd_get_symbol_leading_char (ibfd) |
4190 | != bfd_get_symbol_leading_char (obfd)) | |
4da81684 HPN |
4191 | { |
4192 | (*_bfd_error_handler) | |
bac23f82 | 4193 | (bfd_get_symbol_leading_char (ibfd) == '_' |
d003868e AM |
4194 | ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols") |
4195 | : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"), | |
4196 | ibfd); | |
4da81684 | 4197 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4198 | return FALSE; |
4da81684 HPN |
4199 | } |
4200 | ||
bac23f82 HPN |
4201 | omach = bfd_get_mach (obfd); |
4202 | ||
4203 | if (imach != omach) | |
4204 | { | |
4205 | /* We can get an incompatible combination only if either is | |
4206 | bfd_mach_cris_v32, and the other one isn't compatible. */ | |
4207 | if ((imach == bfd_mach_cris_v32 | |
4208 | && omach != bfd_mach_cris_v10_v32) | |
4209 | || (omach == bfd_mach_cris_v32 | |
4210 | && imach != bfd_mach_cris_v10_v32)) | |
4211 | { | |
4212 | (*_bfd_error_handler) | |
4213 | ((imach == bfd_mach_cris_v32) | |
4214 | ? _("%B contains CRIS v32 code, incompatible" | |
4215 | " with previous objects") | |
4216 | : _("%B contains non-CRIS-v32 code, incompatible" | |
4217 | " with previous objects"), | |
4218 | ibfd); | |
4219 | bfd_set_error (bfd_error_bad_value); | |
4220 | return FALSE; | |
4221 | } | |
4222 | ||
4223 | /* We don't have to check the case where the input is compatible | |
4224 | with v10 and v32, because the output is already known to be set | |
4225 | to the other (compatible) mach. */ | |
4226 | if (omach == bfd_mach_cris_v10_v32 | |
4227 | && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach)) | |
4228 | return FALSE; | |
4229 | } | |
4230 | ||
b34976b6 | 4231 | return TRUE; |
4da81684 | 4232 | } |
99e4ae17 | 4233 | |
bac23f82 HPN |
4234 | /* Do side-effects of e_flags copying to obfd. */ |
4235 | ||
4236 | static bfd_boolean | |
2c3fc389 | 4237 | cris_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
bac23f82 HPN |
4238 | { |
4239 | /* Call the base function. */ | |
4240 | if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd)) | |
4241 | return FALSE; | |
4242 | ||
4243 | /* If output is big-endian for some obscure reason, stop here. */ | |
4244 | if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE) | |
4245 | return FALSE; | |
4246 | ||
4247 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
4248 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
4249 | return TRUE; | |
4250 | ||
4251 | /* Do what we really came here for. */ | |
4252 | return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd)); | |
4253 | } | |
99e4ae17 AJ |
4254 | |
4255 | static enum elf_reloc_type_class | |
7e612e98 AM |
4256 | elf_cris_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
4257 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
4258 | const Elf_Internal_Rela *rela) | |
99e4ae17 | 4259 | { |
100382c7 HPN |
4260 | enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rela->r_info); |
4261 | switch (r_type) | |
99e4ae17 AJ |
4262 | { |
4263 | case R_CRIS_RELATIVE: | |
4264 | return reloc_class_relative; | |
4265 | case R_CRIS_JUMP_SLOT: | |
4266 | return reloc_class_plt; | |
4267 | case R_CRIS_COPY: | |
4268 | return reloc_class_copy; | |
4269 | default: | |
4270 | return reloc_class_normal; | |
4271 | } | |
4272 | } | |
100382c7 HPN |
4273 | |
4274 | /* The elf_backend_got_elt_size worker. For one symbol, we can have up to | |
4275 | two GOT entries from three types with two different sizes. We handle | |
4276 | it as a single entry, so we can use the regular offset-calculation | |
4277 | machinery. */ | |
4278 | ||
4279 | static bfd_vma | |
4280 | elf_cris_got_elt_size (bfd *abfd ATTRIBUTE_UNUSED, | |
4281 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
4282 | struct elf_link_hash_entry *hr, | |
4283 | bfd *ibfd, | |
4284 | unsigned long symndx) | |
4285 | { | |
4286 | struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) hr; | |
100382c7 HPN |
4287 | bfd_vma eltsiz = 0; |
4288 | ||
4289 | /* We may have one regular GOT entry or up to two TLS GOT | |
4290 | entries. */ | |
4291 | if (h == NULL) | |
4292 | { | |
b2e254f9 | 4293 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
100382c7 HPN |
4294 | bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (ibfd); |
4295 | ||
4296 | BFD_ASSERT (local_got_refcounts != NULL); | |
4297 | ||
4298 | if (local_got_refcounts[LGOT_REG_NDX (symndx)] > 0) | |
4299 | { | |
4300 | /* We can't have a variable referred to both as a regular | |
4301 | variable and through TLS relocs. */ | |
4302 | BFD_ASSERT (local_got_refcounts[LGOT_DTP_NDX (symndx)] == 0 | |
4303 | && local_got_refcounts[LGOT_TPREL_NDX (symndx)] == 0); | |
4304 | return 4; | |
4305 | } | |
4306 | ||
4307 | if (local_got_refcounts[LGOT_DTP_NDX (symndx)] > 0) | |
4308 | eltsiz += 8; | |
4309 | ||
4310 | if (local_got_refcounts[LGOT_TPREL_NDX (symndx)] > 0) | |
4311 | eltsiz += 4; | |
4312 | } | |
4313 | else | |
4314 | { | |
4315 | struct elf_cris_link_hash_entry *hh = elf_cris_hash_entry (h); | |
4316 | if (hh->reg_got_refcount > 0) | |
4317 | { | |
4318 | /* The actual error-on-input is emitted elsewhere. */ | |
4319 | BFD_ASSERT (hh->dtp_refcount == 0 && hh->tprel_refcount == 0); | |
4320 | return 4; | |
4321 | } | |
4322 | ||
4323 | if (hh->dtp_refcount > 0) | |
4324 | eltsiz += 8; | |
4325 | ||
4326 | if (hh->tprel_refcount > 0) | |
4327 | eltsiz += 4; | |
4328 | } | |
4329 | ||
b2e254f9 HPN |
4330 | /* We're only called when h->got.refcount is non-zero, so we must |
4331 | have a non-zero size. */ | |
4332 | BFD_ASSERT (eltsiz != 0); | |
100382c7 HPN |
4333 | return eltsiz; |
4334 | } | |
06c15ad7 HPN |
4335 | \f |
4336 | #define ELF_ARCH bfd_arch_cris | |
ae95ffa6 | 4337 | #define ELF_TARGET_ID CRIS_ELF_DATA |
06c15ad7 HPN |
4338 | #define ELF_MACHINE_CODE EM_CRIS |
4339 | #define ELF_MAXPAGESIZE 0x2000 | |
4340 | ||
6d00b590 | 4341 | #define TARGET_LITTLE_SYM cris_elf32_vec |
06c15ad7 | 4342 | #define TARGET_LITTLE_NAME "elf32-cris" |
4da81684 | 4343 | #define elf_symbol_leading_char 0 |
06c15ad7 HPN |
4344 | |
4345 | #define elf_info_to_howto_rel NULL | |
4346 | #define elf_info_to_howto cris_info_to_howto_rela | |
4347 | #define elf_backend_relocate_section cris_elf_relocate_section | |
4348 | #define elf_backend_gc_mark_hook cris_elf_gc_mark_hook | |
4349 | #define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook | |
5d5a918a | 4350 | #define elf_backend_plt_sym_val cris_elf_plt_sym_val |
06c15ad7 | 4351 | #define elf_backend_check_relocs cris_elf_check_relocs |
72209a1f HPN |
4352 | #define elf_backend_grok_prstatus cris_elf_grok_prstatus |
4353 | #define elf_backend_grok_psinfo cris_elf_grok_psinfo | |
06c15ad7 HPN |
4354 | |
4355 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 4356 | #define elf_backend_can_refcount 1 |
06c15ad7 | 4357 | |
4da81684 HPN |
4358 | #define elf_backend_object_p cris_elf_object_p |
4359 | #define elf_backend_final_write_processing \ | |
4360 | cris_elf_final_write_processing | |
4361 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
4362 | cris_elf_print_private_bfd_data | |
4363 | #define bfd_elf32_bfd_merge_private_bfd_data \ | |
4364 | cris_elf_merge_private_bfd_data | |
bac23f82 HPN |
4365 | #define bfd_elf32_bfd_copy_private_bfd_data \ |
4366 | cris_elf_copy_private_bfd_data | |
4da81684 | 4367 | |
06c15ad7 | 4368 | #define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup |
157090f7 | 4369 | #define bfd_elf32_bfd_reloc_name_lookup cris_reloc_name_lookup |
06c15ad7 | 4370 | |
915e5146 HPN |
4371 | #define bfd_elf32_bfd_link_hash_table_create \ |
4372 | elf_cris_link_hash_table_create | |
4373 | #define elf_backend_adjust_dynamic_symbol \ | |
4374 | elf_cris_adjust_dynamic_symbol | |
237bc7f0 HPN |
4375 | #define elf_backend_copy_indirect_symbol \ |
4376 | elf_cris_copy_indirect_symbol | |
915e5146 HPN |
4377 | #define elf_backend_size_dynamic_sections \ |
4378 | elf_cris_size_dynamic_sections | |
74541ad4 | 4379 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
915e5146 HPN |
4380 | #define elf_backend_finish_dynamic_symbol \ |
4381 | elf_cris_finish_dynamic_symbol | |
4382 | #define elf_backend_finish_dynamic_sections \ | |
4383 | elf_cris_finish_dynamic_sections | |
4384 | #define elf_backend_create_dynamic_sections \ | |
4385 | _bfd_elf_create_dynamic_sections | |
4386 | #define bfd_elf32_bfd_final_link \ | |
c152c796 | 4387 | bfd_elf_gc_common_final_link |
915e5146 | 4388 | #define elf_backend_hide_symbol elf_cris_hide_symbol |
99e4ae17 | 4389 | #define elf_backend_reloc_type_class elf_cris_reloc_type_class |
915e5146 HPN |
4390 | |
4391 | #define elf_backend_want_got_plt 1 | |
4392 | #define elf_backend_plt_readonly 1 | |
4393 | #define elf_backend_want_plt_sym 0 | |
4394 | #define elf_backend_got_header_size 12 | |
100382c7 | 4395 | #define elf_backend_got_elt_size elf_cris_got_elt_size |
915e5146 | 4396 | |
06c15ad7 HPN |
4397 | /* Later, we my want to optimize RELA entries into REL entries for dynamic |
4398 | linking and libraries (if it's a win of any significance). Until then, | |
4399 | take the easy route. */ | |
4400 | #define elf_backend_may_use_rel_p 0 | |
4401 | #define elf_backend_may_use_rela_p 1 | |
f0fe0e16 | 4402 | #define elf_backend_rela_normal 1 |
06c15ad7 HPN |
4403 | |
4404 | #include "elf32-target.h" | |
4da81684 | 4405 | |
4da81684 HPN |
4406 | #undef TARGET_LITTLE_SYM |
4407 | #undef TARGET_LITTLE_NAME | |
4408 | #undef elf_symbol_leading_char | |
4409 | ||
6d00b590 | 4410 | #define TARGET_LITTLE_SYM cris_elf32_us_vec |
4da81684 HPN |
4411 | #define TARGET_LITTLE_NAME "elf32-us-cris" |
4412 | #define elf_symbol_leading_char '_' | |
16cecee5 L |
4413 | #undef elf32_bed |
4414 | #define elf32_bed elf32_us_cris_bed | |
4da81684 HPN |
4415 | |
4416 | #include "elf32-target.h" |