Commit | Line | Data |
---|---|---|
b3baf5d0 | 1 | /* OpenRISC-specific support for 32-bit ELF. |
ab96bf03 | 2 | Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007 |
07adf181 | 3 | Free Software Foundation, Inc. |
b3baf5d0 NC |
4 | Contributed by Johan Rydberg, jrydberg@opencores.org |
5 | ||
47b0e7ad | 6 | This file is part of BFD, the Binary File Descriptor library. |
b3baf5d0 | 7 | |
47b0e7ad NC |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
b3baf5d0 | 12 | |
47b0e7ad NC |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
b3baf5d0 | 17 | |
47b0e7ad NC |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, | |
21 | USA. */ | |
b3baf5d0 NC |
22 | |
23 | #include "bfd.h" | |
24 | #include "sysdep.h" | |
25 | #include "libbfd.h" | |
26 | #include "elf-bfd.h" | |
27 | #include "elf/openrisc.h" | |
28 | #include "libiberty.h" | |
29 | ||
b3baf5d0 | 30 | static reloc_howto_type openrisc_elf_howto_table[] = |
47b0e7ad | 31 | { |
b3baf5d0 NC |
32 | /* This reloc does nothing. */ |
33 | HOWTO (R_OPENRISC_NONE, /* type */ | |
34 | 0, /* rightshift */ | |
35 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
36 | 32, /* bitsize */ | |
b34976b6 | 37 | FALSE, /* pc_relative */ |
b3baf5d0 NC |
38 | 0, /* bitpos */ |
39 | complain_overflow_bitfield, /* complain_on_overflow */ | |
40 | bfd_elf_generic_reloc, /* special_function */ | |
41 | "R_OPENRISC_NONE", /* name */ | |
b34976b6 | 42 | FALSE, /* partial_inplace */ |
b3baf5d0 NC |
43 | 0, /* src_mask */ |
44 | 0, /* dst_mask */ | |
b34976b6 | 45 | FALSE), /* pcrel_offset */ |
b3baf5d0 NC |
46 | |
47 | /* A PC relative 26 bit relocation, right shifted by 2. */ | |
48 | HOWTO (R_OPENRISC_INSN_REL_26, /* type */ | |
49 | 2, /* rightshift */ | |
50 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
51 | 26, /* bitsize */ | |
b34976b6 | 52 | TRUE, /* pc_relative */ |
b3baf5d0 NC |
53 | 0, /* bitpos */ |
54 | complain_overflow_signed, /* complain_on_overflow */ | |
55 | bfd_elf_generic_reloc, /* special_function */ | |
56 | "R_OPENRISC_INSN_REL_26", /* name */ | |
b34976b6 | 57 | FALSE, /* partial_inplace */ |
b3baf5d0 NC |
58 | 0x00000000, /* src_mask */ |
59 | 0x03ffffff, /* dst_mask */ | |
b34976b6 | 60 | FALSE), /* pcrel_offset */ |
b3baf5d0 NC |
61 | |
62 | /* A absolute 26 bit relocation, right shifted by 2. */ | |
63 | HOWTO (R_OPENRISC_INSN_ABS_26, /* type */ | |
64 | 2, /* rightshift */ | |
65 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
66 | 26, /* bitsize */ | |
b34976b6 | 67 | FALSE, /* pc_relative */ |
b3baf5d0 NC |
68 | 0, /* bitpos */ |
69 | complain_overflow_signed, /* complain_on_overflow */ | |
70 | bfd_elf_generic_reloc, /* special_function */ | |
71 | "R_OPENRISC_INSN_ABS_26", /* name */ | |
b34976b6 | 72 | FALSE, /* partial_inplace */ |
b3baf5d0 NC |
73 | 0x00000000, /* src_mask */ |
74 | 0x03ffffff, /* dst_mask */ | |
b34976b6 | 75 | FALSE), /* pcrel_offset */ |
b3baf5d0 NC |
76 | |
77 | HOWTO (R_OPENRISC_LO_16_IN_INSN, /* type */ | |
78 | 0, /* rightshift */ | |
c7e40348 | 79 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
b3baf5d0 | 80 | 16, /* bitsize */ |
b34976b6 | 81 | FALSE, /* pc_relative */ |
b3baf5d0 | 82 | 0, /* bitpos */ |
c7e40348 | 83 | complain_overflow_dont, /* complain_on_overflow */ |
b3baf5d0 NC |
84 | bfd_elf_generic_reloc, /* special_function */ |
85 | "R_OPENRISC_LO_16_IN_INSN", /* name */ | |
b34976b6 | 86 | FALSE, /* partial_inplace */ |
c7e40348 | 87 | 0, /* src_mask */ |
b3baf5d0 | 88 | 0x0000ffff, /* dst_mask */ |
b34976b6 | 89 | FALSE), /* pcrel_offset */ |
b3baf5d0 NC |
90 | |
91 | HOWTO (R_OPENRISC_HI_16_IN_INSN, /* type */ | |
92 | 16, /* rightshift */ | |
c7e40348 | 93 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
b3baf5d0 | 94 | 16, /* bitsize */ |
b34976b6 | 95 | FALSE, /* pc_relative */ |
b3baf5d0 | 96 | 0, /* bitpos */ |
c7e40348 | 97 | complain_overflow_dont, /* complain_on_overflow */ |
b3baf5d0 NC |
98 | bfd_elf_generic_reloc, /* special_function */ |
99 | "R_OPENRISC_HI_16_IN_INSN", /* name */ | |
b34976b6 | 100 | FALSE, /* partial_inplace */ |
c7e40348 | 101 | 0, /* src_mask */ |
b3baf5d0 | 102 | 0x0000ffff, /* dst_mask */ |
b34976b6 | 103 | FALSE), /* pcrel_offset */ |
b3baf5d0 NC |
104 | |
105 | /* An 8 bit absolute relocation. */ | |
106 | HOWTO (R_OPENRISC_8, /* type */ | |
107 | 0, /* rightshift */ | |
108 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
109 | 8, /* bitsize */ | |
b34976b6 | 110 | FALSE, /* pc_relative */ |
b3baf5d0 NC |
111 | 0, /* bitpos */ |
112 | complain_overflow_bitfield, /* complain_on_overflow */ | |
113 | bfd_elf_generic_reloc, /* special_function */ | |
114 | "R_OPENRISC_8", /* name */ | |
b34976b6 | 115 | TRUE, /* partial_inplace */ |
b3baf5d0 NC |
116 | 0x0000, /* src_mask */ |
117 | 0x00ff, /* dst_mask */ | |
b34976b6 | 118 | FALSE), /* pcrel_offset */ |
b3baf5d0 NC |
119 | |
120 | /* A 16 bit absolute relocation. */ | |
121 | HOWTO (R_OPENRISC_16, /* type */ | |
122 | 0, /* rightshift */ | |
123 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
124 | 16, /* bitsize */ | |
b34976b6 | 125 | FALSE, /* pc_relative */ |
b3baf5d0 NC |
126 | 0, /* bitpos */ |
127 | complain_overflow_bitfield, /* complain_on_overflow */ | |
128 | bfd_elf_generic_reloc, /* special_function */ | |
129 | "R_OPENRISC_16", /* name */ | |
b34976b6 | 130 | TRUE, /* partial_inplace */ |
b3baf5d0 NC |
131 | 0x00000000, /* src_mask */ |
132 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 133 | FALSE), /* pcrel_offset */ |
b3baf5d0 NC |
134 | |
135 | /* A 32 bit absolute relocation. */ | |
136 | HOWTO (R_OPENRISC_32, /* type */ | |
137 | 0, /* rightshift */ | |
138 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
139 | 32, /* bitsize */ | |
b34976b6 | 140 | FALSE, /* pc_relative */ |
b3baf5d0 NC |
141 | 0, /* bitpos */ |
142 | complain_overflow_bitfield, /* complain_on_overflow */ | |
143 | bfd_elf_generic_reloc, /* special_function */ | |
144 | "R_OPENRISC_32", /* name */ | |
b34976b6 | 145 | TRUE, /* partial_inplace */ |
b3baf5d0 NC |
146 | 0x00000000, /* src_mask */ |
147 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 148 | FALSE), /* pcrel_offset */ |
b3baf5d0 | 149 | |
47b0e7ad | 150 | /* GNU extension to record C++ vtable hierarchy. */ |
b3baf5d0 NC |
151 | HOWTO (R_OPENRISC_GNU_VTINHERIT, /* type */ |
152 | 0, /* rightshift */ | |
153 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
154 | 0, /* bitsize */ | |
b34976b6 | 155 | FALSE, /* pc_relative */ |
b3baf5d0 NC |
156 | 0, /* bitpos */ |
157 | complain_overflow_dont, /* complain_on_overflow */ | |
158 | NULL, /* special_function */ | |
159 | "R_OPENRISC_GNU_VTINHERIT", /* name */ | |
b34976b6 | 160 | FALSE, /* partial_inplace */ |
b3baf5d0 NC |
161 | 0, /* src_mask */ |
162 | 0, /* dst_mask */ | |
b34976b6 | 163 | FALSE), /* pcrel_offset */ |
b3baf5d0 | 164 | |
47b0e7ad | 165 | /* GNU extension to record C++ vtable member usage. */ |
b3baf5d0 NC |
166 | HOWTO (R_OPENRISC_GNU_VTENTRY, /* type */ |
167 | 0, /* rightshift */ | |
168 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
169 | 0, /* bitsize */ | |
b34976b6 | 170 | FALSE, /* pc_relative */ |
b3baf5d0 NC |
171 | 0, /* bitpos */ |
172 | complain_overflow_dont, /* complain_on_overflow */ | |
173 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
174 | "R_OPENRISC_GNU_VTENTRY", /* name */ | |
b34976b6 | 175 | FALSE, /* partial_inplace */ |
b3baf5d0 NC |
176 | 0, /* src_mask */ |
177 | 0, /* dst_mask */ | |
b34976b6 | 178 | FALSE), /* pcrel_offset */ |
b3baf5d0 NC |
179 | }; |
180 | ||
181 | /* Map BFD reloc types to OpenRISC ELF reloc types. */ | |
182 | ||
183 | struct openrisc_reloc_map | |
47b0e7ad NC |
184 | { |
185 | bfd_reloc_code_real_type bfd_reloc_val; | |
186 | unsigned int openrisc_reloc_val; | |
187 | }; | |
b3baf5d0 NC |
188 | |
189 | static const struct openrisc_reloc_map openrisc_reloc_map[] = | |
47b0e7ad NC |
190 | { |
191 | { BFD_RELOC_NONE, R_OPENRISC_NONE }, | |
192 | { BFD_RELOC_32, R_OPENRISC_32 }, | |
193 | { BFD_RELOC_16, R_OPENRISC_16 }, | |
194 | { BFD_RELOC_8, R_OPENRISC_8 }, | |
195 | { BFD_RELOC_OPENRISC_REL_26,R_OPENRISC_INSN_REL_26 }, | |
196 | { BFD_RELOC_OPENRISC_ABS_26,R_OPENRISC_INSN_ABS_26 }, | |
b3baf5d0 | 197 | { BFD_RELOC_HI16, R_OPENRISC_HI_16_IN_INSN }, |
47b0e7ad NC |
198 | { BFD_RELOC_LO16, R_OPENRISC_LO_16_IN_INSN }, |
199 | { BFD_RELOC_VTABLE_INHERIT, R_OPENRISC_GNU_VTINHERIT }, | |
200 | { BFD_RELOC_VTABLE_ENTRY, R_OPENRISC_GNU_VTENTRY } | |
201 | }; | |
b3baf5d0 NC |
202 | |
203 | static reloc_howto_type * | |
47b0e7ad NC |
204 | openrisc_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, |
205 | bfd_reloc_code_real_type code) | |
b3baf5d0 NC |
206 | { |
207 | unsigned int i; | |
208 | ||
209 | for (i = ARRAY_SIZE (openrisc_reloc_map); --i;) | |
210 | if (openrisc_reloc_map[i].bfd_reloc_val == code) | |
211 | return & openrisc_elf_howto_table[openrisc_reloc_map[i]. | |
212 | openrisc_reloc_val]; | |
213 | ||
214 | return NULL; | |
215 | } | |
216 | ||
217 | /* Set the howto pointer for an OpenRISC ELF reloc. */ | |
218 | ||
219 | static void | |
47b0e7ad NC |
220 | openrisc_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED, |
221 | arelent * cache_ptr, | |
222 | Elf_Internal_Rela * dst) | |
b3baf5d0 NC |
223 | { |
224 | unsigned int r_type; | |
225 | ||
226 | r_type = ELF32_R_TYPE (dst->r_info); | |
227 | BFD_ASSERT (r_type < (unsigned int) R_OPENRISC_max); | |
228 | cache_ptr->howto = & openrisc_elf_howto_table[r_type]; | |
229 | } | |
230 | ||
231 | /* Perform a single relocation. By default we use the standard BFD | |
232 | routines, but a few relocs, we have to do them ourselves. */ | |
233 | ||
234 | static bfd_reloc_status_type | |
47b0e7ad NC |
235 | openrisc_final_link_relocate (reloc_howto_type *howto, |
236 | bfd *input_bfd, | |
237 | asection *input_section, | |
238 | bfd_byte *contents, | |
239 | Elf_Internal_Rela *rel, | |
240 | bfd_vma relocation) | |
b3baf5d0 NC |
241 | { |
242 | bfd_reloc_status_type r = bfd_reloc_ok; | |
243 | ||
244 | switch (howto->type) | |
245 | { | |
246 | case R_OPENRISC_LO_16_IN_INSN: | |
247 | relocation &= 0xffff; | |
248 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
249 | contents, rel->r_offset, | |
250 | relocation, rel->r_addend); | |
251 | break; | |
252 | ||
253 | default: | |
254 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
255 | contents, rel->r_offset, | |
256 | relocation, rel->r_addend); | |
257 | } | |
258 | ||
259 | return r; | |
260 | } | |
261 | ||
262 | /* Relocate an OpenRISC ELF section. | |
b3baf5d0 NC |
263 | |
264 | The RELOCATE_SECTION function is called by the new ELF backend linker | |
265 | to handle the relocations for a section. | |
266 | ||
267 | The relocs are always passed as Rela structures; if the section | |
268 | actually uses Rel structures, the r_addend field will always be | |
269 | zero. | |
270 | ||
271 | This function is responsible for adjusting the section contents as | |
1049f94e | 272 | necessary, and (if using Rela relocs and generating a relocatable |
b3baf5d0 NC |
273 | output file) adjusting the reloc addend as necessary. |
274 | ||
275 | This function does not have to worry about setting the reloc | |
276 | address or the reloc symbol index. | |
277 | ||
278 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
279 | ||
280 | LOCAL_SECTIONS is an array giving the section in the input file | |
281 | corresponding to the st_shndx field of each local symbol. | |
282 | ||
283 | The global hash table entry for the global symbols can be found | |
284 | via elf_sym_hashes (input_bfd). | |
285 | ||
1049f94e | 286 | When generating relocatable output, this function must handle |
b3baf5d0 NC |
287 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
288 | going to be the section symbol corresponding to the output | |
289 | section, which means that the addend must be adjusted | |
290 | accordingly. */ | |
291 | ||
b34976b6 | 292 | static bfd_boolean |
47b0e7ad NC |
293 | openrisc_elf_relocate_section (bfd *output_bfd, |
294 | struct bfd_link_info *info, | |
295 | bfd *input_bfd, | |
296 | asection *input_section, | |
297 | bfd_byte *contents, | |
298 | Elf_Internal_Rela *relocs, | |
299 | Elf_Internal_Sym *local_syms, | |
300 | asection **local_sections) | |
b3baf5d0 NC |
301 | { |
302 | Elf_Internal_Shdr *symtab_hdr; | |
303 | struct elf_link_hash_entry **sym_hashes; | |
304 | Elf_Internal_Rela *rel; | |
305 | Elf_Internal_Rela *relend; | |
306 | ||
307 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
308 | sym_hashes = elf_sym_hashes (input_bfd); | |
309 | relend = relocs + input_section->reloc_count; | |
310 | ||
311 | for (rel = relocs; rel < relend; rel++) | |
312 | { | |
313 | reloc_howto_type *howto; | |
314 | unsigned long r_symndx; | |
315 | Elf_Internal_Sym *sym; | |
316 | asection *sec; | |
317 | struct elf_link_hash_entry *h; | |
318 | bfd_vma relocation; | |
319 | bfd_reloc_status_type r; | |
320 | const char *name = NULL; | |
321 | int r_type; | |
322 | ||
323 | r_type = ELF32_R_TYPE (rel->r_info); | |
324 | r_symndx = ELF32_R_SYM (rel->r_info); | |
325 | ||
326 | if (r_type == R_OPENRISC_GNU_VTINHERIT | |
327 | || r_type == R_OPENRISC_GNU_VTENTRY) | |
328 | continue; | |
329 | ||
b3baf5d0 NC |
330 | if ((unsigned int) r_type > |
331 | (sizeof openrisc_elf_howto_table / sizeof (reloc_howto_type))) | |
332 | abort (); | |
333 | ||
b3baf5d0 NC |
334 | howto = openrisc_elf_howto_table + ELF32_R_TYPE (rel->r_info); |
335 | h = NULL; | |
336 | sym = NULL; | |
337 | sec = NULL; | |
338 | ||
339 | if (r_symndx < symtab_hdr->sh_info) | |
340 | { | |
341 | sym = local_syms + r_symndx; | |
342 | sec = local_sections[r_symndx]; | |
8517fae7 | 343 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
b3baf5d0 NC |
344 | |
345 | name = bfd_elf_string_from_elf_section | |
346 | (input_bfd, symtab_hdr->sh_link, sym->st_name); | |
347 | name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name; | |
348 | } | |
349 | else | |
350 | { | |
59c2e50f | 351 | bfd_boolean unresolved_reloc, warned; |
b3baf5d0 | 352 | |
b2a8e766 AM |
353 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
354 | r_symndx, symtab_hdr, sym_hashes, | |
355 | h, sec, relocation, | |
356 | unresolved_reloc, warned); | |
b3baf5d0 NC |
357 | } |
358 | ||
ab96bf03 AM |
359 | if (sec != NULL && elf_discarded_section (sec)) |
360 | { | |
361 | /* For relocs against symbols from removed linkonce sections, | |
362 | or sections discarded by a linker script, we just want the | |
363 | section contents zeroed. Avoid any special processing. */ | |
364 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); | |
365 | rel->r_info = 0; | |
366 | rel->r_addend = 0; | |
367 | continue; | |
368 | } | |
369 | ||
370 | if (info->relocatable) | |
371 | continue; | |
372 | ||
b3baf5d0 NC |
373 | r = openrisc_final_link_relocate (howto, input_bfd, input_section, |
374 | contents, rel, relocation); | |
375 | ||
376 | if (r != bfd_reloc_ok) | |
377 | { | |
47b0e7ad | 378 | const char *msg = NULL; |
b3baf5d0 NC |
379 | |
380 | switch (r) | |
381 | { | |
382 | case bfd_reloc_overflow: | |
383 | r = info->callbacks->reloc_overflow | |
dfeffb9f L |
384 | (info, (h ? &h->root : NULL), name, howto->name, |
385 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
b3baf5d0 NC |
386 | break; |
387 | ||
388 | case bfd_reloc_undefined: | |
389 | r = info->callbacks->undefined_symbol | |
b34976b6 | 390 | (info, name, input_bfd, input_section, rel->r_offset, TRUE); |
b3baf5d0 NC |
391 | break; |
392 | ||
393 | case bfd_reloc_outofrange: | |
394 | msg = _("internal error: out of range error"); | |
395 | break; | |
396 | ||
397 | case bfd_reloc_notsupported: | |
398 | msg = _("internal error: unsupported relocation error"); | |
399 | break; | |
400 | ||
401 | case bfd_reloc_dangerous: | |
402 | msg = _("internal error: dangerous relocation"); | |
403 | break; | |
404 | ||
405 | default: | |
406 | msg = _("internal error: unknown error"); | |
407 | break; | |
408 | } | |
409 | ||
410 | if (msg) | |
411 | r = info->callbacks->warning | |
412 | (info, msg, name, input_bfd, input_section, rel->r_offset); | |
413 | ||
414 | if (!r) | |
b34976b6 | 415 | return FALSE; |
b3baf5d0 NC |
416 | } |
417 | } | |
418 | ||
b34976b6 | 419 | return TRUE; |
b3baf5d0 NC |
420 | } |
421 | ||
422 | /* Return the section that should be marked against GC for a given | |
423 | relocation. */ | |
424 | ||
425 | static asection * | |
47b0e7ad | 426 | openrisc_elf_gc_mark_hook (asection *sec, |
07adf181 | 427 | struct bfd_link_info *info, |
47b0e7ad NC |
428 | Elf_Internal_Rela *rel, |
429 | struct elf_link_hash_entry *h, | |
430 | Elf_Internal_Sym *sym) | |
b3baf5d0 | 431 | { |
07adf181 AM |
432 | if (h != NULL) |
433 | switch (ELF32_R_TYPE (rel->r_info)) | |
434 | { | |
435 | case R_OPENRISC_GNU_VTINHERIT: | |
436 | case R_OPENRISC_GNU_VTENTRY: | |
437 | return NULL; | |
438 | } | |
439 | ||
440 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
b3baf5d0 NC |
441 | } |
442 | ||
443 | /* Look through the relocs for a section during the first phase. | |
444 | Since we don't do .gots or .plts, we just need to consider the | |
445 | virtual table relocs for gc. */ | |
446 | ||
b34976b6 | 447 | static bfd_boolean |
47b0e7ad NC |
448 | openrisc_elf_check_relocs (bfd *abfd, |
449 | struct bfd_link_info *info, | |
450 | asection *sec, | |
451 | const Elf_Internal_Rela *relocs) | |
b3baf5d0 NC |
452 | { |
453 | Elf_Internal_Shdr *symtab_hdr; | |
454 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
455 | const Elf_Internal_Rela *rel; | |
456 | const Elf_Internal_Rela *rel_end; | |
457 | ||
1049f94e | 458 | if (info->relocatable) |
b34976b6 | 459 | return TRUE; |
b3baf5d0 NC |
460 | |
461 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
462 | sym_hashes = elf_sym_hashes (abfd); | |
463 | sym_hashes_end = | |
464 | sym_hashes + symtab_hdr->sh_size / sizeof (Elf32_External_Sym); | |
465 | if (!elf_bad_symtab (abfd)) | |
466 | sym_hashes_end -= symtab_hdr->sh_info; | |
467 | ||
468 | rel_end = relocs + sec->reloc_count; | |
469 | for (rel = relocs; rel < rel_end; rel++) | |
470 | { | |
471 | struct elf_link_hash_entry *h; | |
472 | unsigned long r_symndx; | |
473 | ||
474 | r_symndx = ELF32_R_SYM (rel->r_info); | |
475 | if (r_symndx < symtab_hdr->sh_info) | |
476 | h = NULL; | |
477 | else | |
973a3492 L |
478 | { |
479 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
480 | while (h->root.type == bfd_link_hash_indirect | |
481 | || h->root.type == bfd_link_hash_warning) | |
482 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
483 | } | |
b3baf5d0 NC |
484 | |
485 | switch (ELF32_R_TYPE (rel->r_info)) | |
486 | { | |
487 | /* This relocation describes the C++ object vtable hierarchy. | |
488 | Reconstruct it for later use during GC. */ | |
489 | case R_OPENRISC_GNU_VTINHERIT: | |
c152c796 | 490 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 491 | return FALSE; |
b3baf5d0 NC |
492 | break; |
493 | ||
494 | /* This relocation describes which C++ vtable entries are actually | |
495 | used. Record for later use during GC. */ | |
496 | case R_OPENRISC_GNU_VTENTRY: | |
c152c796 | 497 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 498 | return FALSE; |
b3baf5d0 NC |
499 | break; |
500 | } | |
501 | } | |
502 | ||
b34976b6 | 503 | return TRUE; |
b3baf5d0 NC |
504 | } |
505 | ||
506 | /* Set the right machine number. */ | |
507 | ||
b34976b6 | 508 | static bfd_boolean |
47b0e7ad | 509 | openrisc_elf_object_p (bfd *abfd) |
b3baf5d0 | 510 | { |
47b0e7ad | 511 | bfd_default_set_arch_mach (abfd, bfd_arch_openrisc, 0); |
b34976b6 | 512 | return TRUE; |
b3baf5d0 NC |
513 | } |
514 | ||
515 | /* Store the machine number in the flags field. */ | |
516 | ||
517 | static void | |
47b0e7ad NC |
518 | openrisc_elf_final_write_processing (bfd *abfd, |
519 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
b3baf5d0 NC |
520 | { |
521 | unsigned long val; | |
522 | ||
523 | switch (bfd_get_mach (abfd)) | |
524 | { | |
525 | default: | |
526 | val = 0; | |
527 | break; | |
528 | } | |
529 | ||
530 | elf_elfheader (abfd)->e_flags &= ~0xf; | |
531 | elf_elfheader (abfd)->e_flags |= val; | |
532 | } | |
533 | ||
534 | ||
535 | #define ELF_ARCH bfd_arch_openrisc | |
536 | #define ELF_MACHINE_CODE EM_OPENRISC | |
c11cc227 | 537 | #define ELF_MACHINE_ALT1 EM_OPENRISC_OLD |
b3baf5d0 NC |
538 | #define ELF_MAXPAGESIZE 0x1000 |
539 | ||
540 | #define TARGET_BIG_SYM bfd_elf32_openrisc_vec | |
541 | #define TARGET_BIG_NAME "elf32-openrisc" | |
542 | ||
543 | #define elf_info_to_howto_rel NULL | |
544 | #define elf_info_to_howto openrisc_info_to_howto_rela | |
545 | #define elf_backend_relocate_section openrisc_elf_relocate_section | |
546 | #define elf_backend_gc_mark_hook openrisc_elf_gc_mark_hook | |
b3baf5d0 NC |
547 | #define elf_backend_check_relocs openrisc_elf_check_relocs |
548 | ||
549 | #define elf_backend_can_gc_sections 1 | |
b491616a | 550 | #define elf_backend_rela_normal 1 |
b3baf5d0 NC |
551 | |
552 | #define bfd_elf32_bfd_reloc_type_lookup openrisc_reloc_type_lookup | |
553 | ||
554 | #define elf_backend_object_p openrisc_elf_object_p | |
555 | #define elf_backend_final_write_processing openrisc_elf_final_write_processing | |
556 | ||
557 | #include "elf32-target.h" |