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cbe79dfe TG |
1 | /* IA-64 support for 64-bit ELF |
2 | Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, | |
202e2356 | 3 | 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc. |
cbe79dfe TG |
4 | Contributed by David Mosberger-Tang <davidm@hpl.hp.com> |
5 | ||
6 | This file is part of BFD, the Binary File Descriptor library. | |
7 | ||
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 3 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
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. | |
17 | ||
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, | |
21 | MA 02110-1301, USA. */ | |
22 | ||
23 | #include "sysdep.h" | |
24 | #include "bfd.h" | |
25 | #include "libbfd.h" | |
26 | #include "elf-bfd.h" | |
27 | #include "opcode/ia64.h" | |
28 | #include "elf/ia64.h" | |
29 | #include "objalloc.h" | |
30 | #include "hashtab.h" | |
31 | #include "bfd_stdint.h" | |
32 | #include "elfxx-ia64.h" | |
33 | ||
34 | #define ARCH_SIZE NN | |
35 | ||
36 | #if ARCH_SIZE == 64 | |
37 | #define LOG_SECTION_ALIGN 3 | |
38 | #endif | |
39 | ||
40 | #if ARCH_SIZE == 32 | |
41 | #define LOG_SECTION_ALIGN 2 | |
42 | #endif | |
43 | ||
cbe79dfe TG |
44 | typedef struct bfd_hash_entry *(*new_hash_entry_func) |
45 | (struct bfd_hash_entry *, struct bfd_hash_table *, const char *); | |
46 | ||
47 | /* In dynamically (linker-) created sections, we generally need to keep track | |
48 | of the place a symbol or expression got allocated to. This is done via hash | |
49 | tables that store entries of the following type. */ | |
50 | ||
51 | struct elfNN_ia64_dyn_sym_info | |
52 | { | |
53 | /* The addend for which this entry is relevant. */ | |
54 | bfd_vma addend; | |
55 | ||
56 | bfd_vma got_offset; | |
57 | bfd_vma fptr_offset; | |
58 | bfd_vma pltoff_offset; | |
59 | bfd_vma plt_offset; | |
60 | bfd_vma plt2_offset; | |
61 | bfd_vma tprel_offset; | |
62 | bfd_vma dtpmod_offset; | |
63 | bfd_vma dtprel_offset; | |
64 | ||
65 | /* The symbol table entry, if any, that this was derived from. */ | |
66 | struct elf_link_hash_entry *h; | |
67 | ||
68 | /* Used to count non-got, non-plt relocations for delayed sizing | |
69 | of relocation sections. */ | |
70 | struct elfNN_ia64_dyn_reloc_entry | |
71 | { | |
72 | struct elfNN_ia64_dyn_reloc_entry *next; | |
73 | asection *srel; | |
74 | int type; | |
75 | int count; | |
76 | ||
77 | /* Is this reloc against readonly section? */ | |
78 | bfd_boolean reltext; | |
79 | } *reloc_entries; | |
80 | ||
81 | /* TRUE when the section contents have been updated. */ | |
82 | unsigned got_done : 1; | |
83 | unsigned fptr_done : 1; | |
84 | unsigned pltoff_done : 1; | |
85 | unsigned tprel_done : 1; | |
86 | unsigned dtpmod_done : 1; | |
87 | unsigned dtprel_done : 1; | |
88 | ||
89 | /* TRUE for the different kinds of linker data we want created. */ | |
90 | unsigned want_got : 1; | |
91 | unsigned want_gotx : 1; | |
92 | unsigned want_fptr : 1; | |
93 | unsigned want_ltoff_fptr : 1; | |
94 | unsigned want_plt : 1; | |
95 | unsigned want_plt2 : 1; | |
96 | unsigned want_pltoff : 1; | |
97 | unsigned want_tprel : 1; | |
98 | unsigned want_dtpmod : 1; | |
99 | unsigned want_dtprel : 1; | |
100 | }; | |
101 | ||
102 | struct elfNN_ia64_local_hash_entry | |
103 | { | |
104 | int id; | |
105 | unsigned int r_sym; | |
106 | /* The number of elements in elfNN_ia64_dyn_sym_info array. */ | |
107 | unsigned int count; | |
108 | /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */ | |
109 | unsigned int sorted_count; | |
110 | /* The size of elfNN_ia64_dyn_sym_info array. */ | |
111 | unsigned int size; | |
112 | /* The array of elfNN_ia64_dyn_sym_info. */ | |
113 | struct elfNN_ia64_dyn_sym_info *info; | |
114 | ||
115 | /* TRUE if this hash entry's addends was translated for | |
116 | SHF_MERGE optimization. */ | |
117 | unsigned sec_merge_done : 1; | |
118 | }; | |
119 | ||
120 | struct elfNN_ia64_link_hash_entry | |
121 | { | |
122 | struct elf_link_hash_entry root; | |
123 | /* The number of elements in elfNN_ia64_dyn_sym_info array. */ | |
124 | unsigned int count; | |
125 | /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */ | |
126 | unsigned int sorted_count; | |
127 | /* The size of elfNN_ia64_dyn_sym_info array. */ | |
128 | unsigned int size; | |
129 | /* The array of elfNN_ia64_dyn_sym_info. */ | |
130 | struct elfNN_ia64_dyn_sym_info *info; | |
131 | }; | |
132 | ||
133 | struct elfNN_ia64_link_hash_table | |
134 | { | |
135 | /* The main hash table. */ | |
136 | struct elf_link_hash_table root; | |
137 | ||
138 | asection *fptr_sec; /* Function descriptor table (or NULL). */ | |
139 | asection *rel_fptr_sec; /* Dynamic relocation section for same. */ | |
140 | asection *pltoff_sec; /* Private descriptors for plt (or NULL). */ | |
141 | asection *rel_pltoff_sec; /* Dynamic relocation section for same. */ | |
142 | ||
143 | bfd_size_type minplt_entries; /* Number of minplt entries. */ | |
144 | unsigned reltext : 1; /* Are there relocs against readonly sections? */ | |
145 | unsigned self_dtpmod_done : 1;/* Has self DTPMOD entry been finished? */ | |
146 | bfd_vma self_dtpmod_offset; /* .got offset to self DTPMOD entry. */ | |
147 | /* There are maybe R_IA64_GPREL22 relocations, including those | |
148 | optimized from R_IA64_LTOFF22X, against non-SHF_IA_64_SHORT | |
149 | sections. We need to record those sections so that we can choose | |
150 | a proper GP to cover all R_IA64_GPREL22 relocations. */ | |
151 | asection *max_short_sec; /* Maximum short output section. */ | |
152 | bfd_vma max_short_offset; /* Maximum short offset. */ | |
153 | asection *min_short_sec; /* Minimum short output section. */ | |
154 | bfd_vma min_short_offset; /* Minimum short offset. */ | |
155 | ||
156 | htab_t loc_hash_table; | |
157 | void *loc_hash_memory; | |
158 | }; | |
159 | ||
160 | struct elfNN_ia64_allocate_data | |
161 | { | |
162 | struct bfd_link_info *info; | |
163 | bfd_size_type ofs; | |
164 | bfd_boolean only_got; | |
165 | }; | |
166 | ||
167 | #define elfNN_ia64_hash_table(p) \ | |
168 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ | |
169 | == IA64_ELF_DATA ? ((struct elfNN_ia64_link_hash_table *) ((p)->hash)) : NULL) | |
170 | ||
171 | static struct elfNN_ia64_dyn_sym_info * get_dyn_sym_info | |
172 | (struct elfNN_ia64_link_hash_table *ia64_info, | |
173 | struct elf_link_hash_entry *h, | |
174 | bfd *abfd, const Elf_Internal_Rela *rel, bfd_boolean create); | |
175 | static bfd_boolean elfNN_ia64_dynamic_symbol_p | |
176 | (struct elf_link_hash_entry *h, struct bfd_link_info *info, int); | |
177 | static bfd_boolean elfNN_ia64_choose_gp | |
178 | (bfd *abfd, struct bfd_link_info *info, bfd_boolean final); | |
179 | static void elfNN_ia64_dyn_sym_traverse | |
180 | (struct elfNN_ia64_link_hash_table *ia64_info, | |
2c3fc389 NC |
181 | bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *), |
182 | void * info); | |
cbe79dfe | 183 | static bfd_boolean allocate_global_data_got |
2c3fc389 | 184 | (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data); |
cbe79dfe | 185 | static bfd_boolean allocate_global_fptr_got |
2c3fc389 | 186 | (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data); |
cbe79dfe | 187 | static bfd_boolean allocate_local_got |
2c3fc389 | 188 | (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data); |
cbe79dfe TG |
189 | static bfd_boolean elfNN_ia64_hpux_vec |
190 | (const bfd_target *vec); | |
191 | static bfd_boolean allocate_dynrel_entries | |
2c3fc389 | 192 | (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data); |
cbe79dfe TG |
193 | static asection *get_pltoff |
194 | (bfd *abfd, struct bfd_link_info *info, | |
195 | struct elfNN_ia64_link_hash_table *ia64_info); | |
196 | \f | |
197 | /* ia64-specific relocation. */ | |
198 | ||
199 | /* Given a ELF reloc, return the matching HOWTO structure. */ | |
200 | ||
201 | static void | |
202 | elfNN_ia64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, | |
203 | arelent *bfd_reloc, | |
204 | Elf_Internal_Rela *elf_reloc) | |
205 | { | |
206 | bfd_reloc->howto | |
207 | = ia64_elf_lookup_howto ((unsigned int) ELFNN_R_TYPE (elf_reloc->r_info)); | |
208 | } | |
209 | \f | |
210 | #define PLT_HEADER_SIZE (3 * 16) | |
211 | #define PLT_MIN_ENTRY_SIZE (1 * 16) | |
212 | #define PLT_FULL_ENTRY_SIZE (2 * 16) | |
213 | #define PLT_RESERVED_WORDS 3 | |
214 | ||
215 | static const bfd_byte plt_header[PLT_HEADER_SIZE] = | |
216 | { | |
217 | 0x0b, 0x10, 0x00, 0x1c, 0x00, 0x21, /* [MMI] mov r2=r14;; */ | |
218 | 0xe0, 0x00, 0x08, 0x00, 0x48, 0x00, /* addl r14=0,r2 */ | |
219 | 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */ | |
220 | 0x0b, 0x80, 0x20, 0x1c, 0x18, 0x14, /* [MMI] ld8 r16=[r14],8;; */ | |
221 | 0x10, 0x41, 0x38, 0x30, 0x28, 0x00, /* ld8 r17=[r14],8 */ | |
222 | 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */ | |
223 | 0x11, 0x08, 0x00, 0x1c, 0x18, 0x10, /* [MIB] ld8 r1=[r14] */ | |
224 | 0x60, 0x88, 0x04, 0x80, 0x03, 0x00, /* mov b6=r17 */ | |
225 | 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */ | |
226 | }; | |
227 | ||
228 | static const bfd_byte plt_min_entry[PLT_MIN_ENTRY_SIZE] = | |
229 | { | |
230 | 0x11, 0x78, 0x00, 0x00, 0x00, 0x24, /* [MIB] mov r15=0 */ | |
231 | 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, /* nop.i 0x0 */ | |
232 | 0x00, 0x00, 0x00, 0x40 /* br.few 0 <PLT0>;; */ | |
233 | }; | |
234 | ||
235 | static const bfd_byte plt_full_entry[PLT_FULL_ENTRY_SIZE] = | |
236 | { | |
237 | 0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r15=0,r1;; */ | |
238 | 0x00, 0x41, 0x3c, 0x70, 0x29, 0xc0, /* ld8.acq r16=[r15],8*/ | |
239 | 0x01, 0x08, 0x00, 0x84, /* mov r14=r1;; */ | |
240 | 0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, /* [MIB] ld8 r1=[r15] */ | |
241 | 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */ | |
242 | 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */ | |
243 | }; | |
244 | ||
245 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
246 | ||
247 | static const bfd_byte oor_brl[16] = | |
248 | { | |
249 | 0x05, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */ | |
250 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* brl.sptk.few tgt;; */ | |
251 | 0x00, 0x00, 0x00, 0xc0 | |
252 | }; | |
253 | ||
254 | static const bfd_byte oor_ip[48] = | |
255 | { | |
256 | 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */ | |
257 | 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, /* movl r15=0 */ | |
258 | 0x01, 0x00, 0x00, 0x60, | |
259 | 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MII] nop.m 0 */ | |
260 | 0x00, 0x01, 0x00, 0x60, 0x00, 0x00, /* mov r16=ip;; */ | |
261 | 0xf2, 0x80, 0x00, 0x80, /* add r16=r15,r16;; */ | |
262 | 0x11, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MIB] nop.m 0 */ | |
263 | 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */ | |
264 | 0x60, 0x00, 0x80, 0x00 /* br b6;; */ | |
265 | }; | |
266 | ||
267 | static size_t oor_branch_size = sizeof (oor_brl); | |
268 | ||
269 | void | |
270 | bfd_elfNN_ia64_after_parse (int itanium) | |
271 | { | |
272 | oor_branch_size = itanium ? sizeof (oor_ip) : sizeof (oor_brl); | |
273 | } | |
274 | \f | |
275 | ||
276 | /* Rename some of the generic section flags to better document how they | |
277 | are used here. */ | |
278 | #define skip_relax_pass_0 sec_flg0 | |
279 | #define skip_relax_pass_1 sec_flg1 | |
280 | ||
281 | /* These functions do relaxation for IA-64 ELF. */ | |
282 | ||
283 | static void | |
284 | elfNN_ia64_update_short_info (asection *sec, bfd_vma offset, | |
285 | struct elfNN_ia64_link_hash_table *ia64_info) | |
286 | { | |
287 | /* Skip ABS and SHF_IA_64_SHORT sections. */ | |
288 | if (sec == bfd_abs_section_ptr | |
289 | || (sec->flags & SEC_SMALL_DATA) != 0) | |
290 | return; | |
291 | ||
292 | if (!ia64_info->min_short_sec) | |
293 | { | |
294 | ia64_info->max_short_sec = sec; | |
295 | ia64_info->max_short_offset = offset; | |
296 | ia64_info->min_short_sec = sec; | |
297 | ia64_info->min_short_offset = offset; | |
298 | } | |
299 | else if (sec == ia64_info->max_short_sec | |
300 | && offset > ia64_info->max_short_offset) | |
301 | ia64_info->max_short_offset = offset; | |
302 | else if (sec == ia64_info->min_short_sec | |
303 | && offset < ia64_info->min_short_offset) | |
304 | ia64_info->min_short_offset = offset; | |
305 | else if (sec->output_section->vma | |
306 | > ia64_info->max_short_sec->vma) | |
307 | { | |
308 | ia64_info->max_short_sec = sec; | |
309 | ia64_info->max_short_offset = offset; | |
310 | } | |
311 | else if (sec->output_section->vma | |
312 | < ia64_info->min_short_sec->vma) | |
313 | { | |
314 | ia64_info->min_short_sec = sec; | |
315 | ia64_info->min_short_offset = offset; | |
316 | } | |
317 | } | |
318 | ||
319 | static bfd_boolean | |
320 | elfNN_ia64_relax_section (bfd *abfd, asection *sec, | |
321 | struct bfd_link_info *link_info, | |
322 | bfd_boolean *again) | |
323 | { | |
324 | struct one_fixup | |
325 | { | |
326 | struct one_fixup *next; | |
327 | asection *tsec; | |
328 | bfd_vma toff; | |
329 | bfd_vma trampoff; | |
330 | }; | |
331 | ||
332 | Elf_Internal_Shdr *symtab_hdr; | |
333 | Elf_Internal_Rela *internal_relocs; | |
334 | Elf_Internal_Rela *irel, *irelend; | |
335 | bfd_byte *contents; | |
336 | Elf_Internal_Sym *isymbuf = NULL; | |
337 | struct elfNN_ia64_link_hash_table *ia64_info; | |
338 | struct one_fixup *fixups = NULL; | |
339 | bfd_boolean changed_contents = FALSE; | |
340 | bfd_boolean changed_relocs = FALSE; | |
341 | bfd_boolean changed_got = FALSE; | |
342 | bfd_boolean skip_relax_pass_0 = TRUE; | |
343 | bfd_boolean skip_relax_pass_1 = TRUE; | |
344 | bfd_vma gp = 0; | |
345 | ||
346 | /* Assume we're not going to change any sizes, and we'll only need | |
347 | one pass. */ | |
348 | *again = FALSE; | |
349 | ||
350 | if (link_info->relocatable) | |
351 | (*link_info->callbacks->einfo) | |
352 | (_("%P%F: --relax and -r may not be used together\n")); | |
353 | ||
354 | /* Don't even try to relax for non-ELF outputs. */ | |
355 | if (!is_elf_hash_table (link_info->hash)) | |
356 | return FALSE; | |
357 | ||
358 | /* Nothing to do if there are no relocations or there is no need for | |
359 | the current pass. */ | |
360 | if ((sec->flags & SEC_RELOC) == 0 | |
361 | || sec->reloc_count == 0 | |
362 | || (link_info->relax_pass == 0 && sec->skip_relax_pass_0) | |
363 | || (link_info->relax_pass == 1 && sec->skip_relax_pass_1)) | |
364 | return TRUE; | |
365 | ||
366 | ia64_info = elfNN_ia64_hash_table (link_info); | |
367 | if (ia64_info == NULL) | |
368 | return FALSE; | |
369 | ||
370 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
371 | ||
372 | /* Load the relocations for this section. */ | |
373 | internal_relocs = (_bfd_elf_link_read_relocs | |
374 | (abfd, sec, NULL, (Elf_Internal_Rela *) NULL, | |
375 | link_info->keep_memory)); | |
376 | if (internal_relocs == NULL) | |
377 | return FALSE; | |
378 | ||
379 | irelend = internal_relocs + sec->reloc_count; | |
380 | ||
381 | /* Get the section contents. */ | |
382 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
383 | contents = elf_section_data (sec)->this_hdr.contents; | |
384 | else | |
385 | { | |
386 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
387 | goto error_return; | |
388 | } | |
389 | ||
390 | for (irel = internal_relocs; irel < irelend; irel++) | |
391 | { | |
392 | unsigned long r_type = ELFNN_R_TYPE (irel->r_info); | |
393 | bfd_vma symaddr, reladdr, trampoff, toff, roff; | |
394 | asection *tsec; | |
395 | struct one_fixup *f; | |
396 | bfd_size_type amt; | |
397 | bfd_boolean is_branch; | |
398 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
399 | char symtype; | |
400 | ||
401 | switch (r_type) | |
402 | { | |
403 | case R_IA64_PCREL21B: | |
404 | case R_IA64_PCREL21BI: | |
405 | case R_IA64_PCREL21M: | |
406 | case R_IA64_PCREL21F: | |
407 | /* In pass 1, all br relaxations are done. We can skip it. */ | |
408 | if (link_info->relax_pass == 1) | |
409 | continue; | |
410 | skip_relax_pass_0 = FALSE; | |
411 | is_branch = TRUE; | |
412 | break; | |
413 | ||
414 | case R_IA64_PCREL60B: | |
415 | /* We can't optimize brl to br in pass 0 since br relaxations | |
416 | will increase the code size. Defer it to pass 1. */ | |
417 | if (link_info->relax_pass == 0) | |
418 | { | |
419 | skip_relax_pass_1 = FALSE; | |
420 | continue; | |
421 | } | |
422 | is_branch = TRUE; | |
423 | break; | |
424 | ||
425 | case R_IA64_GPREL22: | |
426 | /* Update max_short_sec/min_short_sec. */ | |
427 | ||
428 | case R_IA64_LTOFF22X: | |
429 | case R_IA64_LDXMOV: | |
430 | /* We can't relax ldx/mov in pass 0 since br relaxations will | |
431 | increase the code size. Defer it to pass 1. */ | |
432 | if (link_info->relax_pass == 0) | |
433 | { | |
434 | skip_relax_pass_1 = FALSE; | |
435 | continue; | |
436 | } | |
437 | is_branch = FALSE; | |
438 | break; | |
439 | ||
440 | default: | |
441 | continue; | |
442 | } | |
443 | ||
444 | /* Get the value of the symbol referred to by the reloc. */ | |
445 | if (ELFNN_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
446 | { | |
447 | /* A local symbol. */ | |
448 | Elf_Internal_Sym *isym; | |
449 | ||
450 | /* Read this BFD's local symbols. */ | |
451 | if (isymbuf == NULL) | |
452 | { | |
453 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
454 | if (isymbuf == NULL) | |
455 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
456 | symtab_hdr->sh_info, 0, | |
457 | NULL, NULL, NULL); | |
458 | if (isymbuf == 0) | |
459 | goto error_return; | |
460 | } | |
461 | ||
462 | isym = isymbuf + ELFNN_R_SYM (irel->r_info); | |
463 | if (isym->st_shndx == SHN_UNDEF) | |
464 | continue; /* We can't do anything with undefined symbols. */ | |
465 | else if (isym->st_shndx == SHN_ABS) | |
466 | tsec = bfd_abs_section_ptr; | |
467 | else if (isym->st_shndx == SHN_COMMON) | |
468 | tsec = bfd_com_section_ptr; | |
469 | else if (isym->st_shndx == SHN_IA_64_ANSI_COMMON) | |
470 | tsec = bfd_com_section_ptr; | |
471 | else | |
472 | tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
473 | ||
474 | toff = isym->st_value; | |
475 | dyn_i = get_dyn_sym_info (ia64_info, NULL, abfd, irel, FALSE); | |
476 | symtype = ELF_ST_TYPE (isym->st_info); | |
477 | } | |
478 | else | |
479 | { | |
480 | unsigned long indx; | |
481 | struct elf_link_hash_entry *h; | |
482 | ||
483 | indx = ELFNN_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
484 | h = elf_sym_hashes (abfd)[indx]; | |
485 | BFD_ASSERT (h != NULL); | |
486 | ||
487 | while (h->root.type == bfd_link_hash_indirect | |
488 | || h->root.type == bfd_link_hash_warning) | |
489 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
490 | ||
491 | dyn_i = get_dyn_sym_info (ia64_info, h, abfd, irel, FALSE); | |
492 | ||
493 | /* For branches to dynamic symbols, we're interested instead | |
494 | in a branch to the PLT entry. */ | |
495 | if (is_branch && dyn_i && dyn_i->want_plt2) | |
496 | { | |
497 | /* Internal branches shouldn't be sent to the PLT. | |
498 | Leave this for now and we'll give an error later. */ | |
499 | if (r_type != R_IA64_PCREL21B) | |
500 | continue; | |
501 | ||
502 | tsec = ia64_info->root.splt; | |
503 | toff = dyn_i->plt2_offset; | |
504 | BFD_ASSERT (irel->r_addend == 0); | |
505 | } | |
506 | ||
507 | /* Can't do anything else with dynamic symbols. */ | |
508 | else if (elfNN_ia64_dynamic_symbol_p (h, link_info, r_type)) | |
509 | continue; | |
510 | ||
511 | else | |
512 | { | |
513 | /* We can't do anything with undefined symbols. */ | |
514 | if (h->root.type == bfd_link_hash_undefined | |
515 | || h->root.type == bfd_link_hash_undefweak) | |
516 | continue; | |
517 | ||
518 | tsec = h->root.u.def.section; | |
519 | toff = h->root.u.def.value; | |
520 | } | |
521 | ||
522 | symtype = h->type; | |
523 | } | |
524 | ||
dbaa2011 | 525 | if (tsec->sec_info_type == SEC_INFO_TYPE_MERGE) |
cbe79dfe TG |
526 | { |
527 | /* At this stage in linking, no SEC_MERGE symbol has been | |
528 | adjusted, so all references to such symbols need to be | |
529 | passed through _bfd_merged_section_offset. (Later, in | |
530 | relocate_section, all SEC_MERGE symbols *except* for | |
531 | section symbols have been adjusted.) | |
532 | ||
533 | gas may reduce relocations against symbols in SEC_MERGE | |
534 | sections to a relocation against the section symbol when | |
535 | the original addend was zero. When the reloc is against | |
536 | a section symbol we should include the addend in the | |
537 | offset passed to _bfd_merged_section_offset, since the | |
538 | location of interest is the original symbol. On the | |
539 | other hand, an access to "sym+addend" where "sym" is not | |
540 | a section symbol should not include the addend; Such an | |
541 | access is presumed to be an offset from "sym"; The | |
542 | location of interest is just "sym". */ | |
543 | if (symtype == STT_SECTION) | |
544 | toff += irel->r_addend; | |
545 | ||
546 | toff = _bfd_merged_section_offset (abfd, &tsec, | |
547 | elf_section_data (tsec)->sec_info, | |
548 | toff); | |
549 | ||
550 | if (symtype != STT_SECTION) | |
551 | toff += irel->r_addend; | |
552 | } | |
553 | else | |
554 | toff += irel->r_addend; | |
555 | ||
556 | symaddr = tsec->output_section->vma + tsec->output_offset + toff; | |
557 | ||
558 | roff = irel->r_offset; | |
559 | ||
560 | if (is_branch) | |
561 | { | |
562 | bfd_signed_vma offset; | |
563 | ||
564 | reladdr = (sec->output_section->vma | |
565 | + sec->output_offset | |
566 | + roff) & (bfd_vma) -4; | |
567 | ||
568 | /* The .plt section is aligned at 32byte and the .text section | |
569 | is aligned at 64byte. The .text section is right after the | |
570 | .plt section. After the first relaxation pass, linker may | |
571 | increase the gap between the .plt and .text sections up | |
572 | to 32byte. We assume linker will always insert 32byte | |
a8685210 | 573 | between the .plt and .text sections after the first |
cbe79dfe TG |
574 | relaxation pass. */ |
575 | if (tsec == ia64_info->root.splt) | |
576 | offset = -0x1000000 + 32; | |
577 | else | |
578 | offset = -0x1000000; | |
579 | ||
580 | /* If the branch is in range, no need to do anything. */ | |
d17fe7b7 | 581 | if ((bfd_signed_vma) (symaddr - reladdr) >= offset |
cbe79dfe TG |
582 | && (bfd_signed_vma) (symaddr - reladdr) <= 0x0FFFFF0) |
583 | { | |
584 | /* If the 60-bit branch is in 21-bit range, optimize it. */ | |
585 | if (r_type == R_IA64_PCREL60B) | |
586 | { | |
587 | ia64_elf_relax_brl (contents, roff); | |
588 | ||
589 | irel->r_info | |
590 | = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), | |
591 | R_IA64_PCREL21B); | |
592 | ||
593 | /* If the original relocation offset points to slot | |
594 | 1, change it to slot 2. */ | |
595 | if ((irel->r_offset & 3) == 1) | |
596 | irel->r_offset += 1; | |
597 | } | |
598 | ||
599 | continue; | |
600 | } | |
601 | else if (r_type == R_IA64_PCREL60B) | |
602 | continue; | |
603 | else if (ia64_elf_relax_br (contents, roff)) | |
604 | { | |
605 | irel->r_info | |
606 | = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), | |
607 | R_IA64_PCREL60B); | |
608 | ||
609 | /* Make the relocation offset point to slot 1. */ | |
610 | irel->r_offset = (irel->r_offset & ~((bfd_vma) 0x3)) + 1; | |
611 | continue; | |
612 | } | |
613 | ||
614 | /* We can't put a trampoline in a .init/.fini section. Issue | |
615 | an error. */ | |
616 | if (strcmp (sec->output_section->name, ".init") == 0 | |
617 | || strcmp (sec->output_section->name, ".fini") == 0) | |
618 | { | |
619 | (*_bfd_error_handler) | |
620 | (_("%B: Can't relax br at 0x%lx in section `%A'. Please use brl or indirect branch."), | |
621 | sec->owner, sec, (unsigned long) roff); | |
622 | bfd_set_error (bfd_error_bad_value); | |
623 | goto error_return; | |
624 | } | |
625 | ||
626 | /* If the branch and target are in the same section, you've | |
627 | got one honking big section and we can't help you unless | |
628 | you are branching backwards. You'll get an error message | |
629 | later. */ | |
630 | if (tsec == sec && toff > roff) | |
631 | continue; | |
632 | ||
633 | /* Look for an existing fixup to this address. */ | |
634 | for (f = fixups; f ; f = f->next) | |
635 | if (f->tsec == tsec && f->toff == toff) | |
636 | break; | |
637 | ||
638 | if (f == NULL) | |
639 | { | |
640 | /* Two alternatives: If it's a branch to a PLT entry, we can | |
641 | make a copy of the FULL_PLT entry. Otherwise, we'll have | |
642 | to use a `brl' insn to get where we're going. */ | |
643 | ||
644 | size_t size; | |
645 | ||
646 | if (tsec == ia64_info->root.splt) | |
647 | size = sizeof (plt_full_entry); | |
648 | else | |
649 | size = oor_branch_size; | |
650 | ||
651 | /* Resize the current section to make room for the new branch. */ | |
652 | trampoff = (sec->size + 15) & (bfd_vma) -16; | |
653 | ||
654 | /* If trampoline is out of range, there is nothing we | |
655 | can do. */ | |
656 | offset = trampoff - (roff & (bfd_vma) -4); | |
657 | if (offset < -0x1000000 || offset > 0x0FFFFF0) | |
658 | continue; | |
659 | ||
660 | amt = trampoff + size; | |
661 | contents = (bfd_byte *) bfd_realloc (contents, amt); | |
662 | if (contents == NULL) | |
663 | goto error_return; | |
664 | sec->size = amt; | |
665 | ||
666 | if (tsec == ia64_info->root.splt) | |
667 | { | |
668 | memcpy (contents + trampoff, plt_full_entry, size); | |
669 | ||
670 | /* Hijack the old relocation for use as the PLTOFF reloc. */ | |
671 | irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), | |
672 | R_IA64_PLTOFF22); | |
673 | irel->r_offset = trampoff; | |
674 | } | |
675 | else | |
676 | { | |
677 | if (size == sizeof (oor_ip)) | |
678 | { | |
679 | memcpy (contents + trampoff, oor_ip, size); | |
680 | irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), | |
681 | R_IA64_PCREL64I); | |
682 | irel->r_addend -= 16; | |
683 | irel->r_offset = trampoff + 2; | |
684 | } | |
685 | else | |
686 | { | |
687 | memcpy (contents + trampoff, oor_brl, size); | |
688 | irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), | |
689 | R_IA64_PCREL60B); | |
690 | irel->r_offset = trampoff + 2; | |
691 | } | |
692 | ||
693 | } | |
694 | ||
695 | /* Record the fixup so we don't do it again this section. */ | |
696 | f = (struct one_fixup *) | |
697 | bfd_malloc ((bfd_size_type) sizeof (*f)); | |
698 | f->next = fixups; | |
699 | f->tsec = tsec; | |
700 | f->toff = toff; | |
701 | f->trampoff = trampoff; | |
702 | fixups = f; | |
703 | } | |
704 | else | |
705 | { | |
706 | /* If trampoline is out of range, there is nothing we | |
707 | can do. */ | |
708 | offset = f->trampoff - (roff & (bfd_vma) -4); | |
709 | if (offset < -0x1000000 || offset > 0x0FFFFF0) | |
710 | continue; | |
711 | ||
712 | /* Nop out the reloc, since we're finalizing things here. */ | |
713 | irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE); | |
714 | } | |
715 | ||
716 | /* Fix up the existing branch to hit the trampoline. */ | |
717 | if (ia64_elf_install_value (contents + roff, offset, r_type) | |
718 | != bfd_reloc_ok) | |
719 | goto error_return; | |
720 | ||
721 | changed_contents = TRUE; | |
722 | changed_relocs = TRUE; | |
723 | } | |
724 | else | |
725 | { | |
726 | /* Fetch the gp. */ | |
727 | if (gp == 0) | |
728 | { | |
729 | bfd *obfd = sec->output_section->owner; | |
730 | gp = _bfd_get_gp_value (obfd); | |
731 | if (gp == 0) | |
732 | { | |
733 | if (!elfNN_ia64_choose_gp (obfd, link_info, FALSE)) | |
734 | goto error_return; | |
735 | gp = _bfd_get_gp_value (obfd); | |
736 | } | |
737 | } | |
738 | ||
739 | /* If the data is out of range, do nothing. */ | |
740 | if ((bfd_signed_vma) (symaddr - gp) >= 0x200000 | |
741 | ||(bfd_signed_vma) (symaddr - gp) < -0x200000) | |
742 | continue; | |
743 | ||
744 | if (r_type == R_IA64_GPREL22) | |
745 | elfNN_ia64_update_short_info (tsec->output_section, | |
746 | tsec->output_offset + toff, | |
747 | ia64_info); | |
748 | else if (r_type == R_IA64_LTOFF22X) | |
749 | { | |
750 | irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), | |
751 | R_IA64_GPREL22); | |
752 | changed_relocs = TRUE; | |
753 | if (dyn_i->want_gotx) | |
754 | { | |
755 | dyn_i->want_gotx = 0; | |
756 | changed_got |= !dyn_i->want_got; | |
757 | } | |
758 | ||
759 | elfNN_ia64_update_short_info (tsec->output_section, | |
760 | tsec->output_offset + toff, | |
761 | ia64_info); | |
762 | } | |
763 | else | |
764 | { | |
765 | ia64_elf_relax_ldxmov (contents, roff); | |
766 | irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE); | |
767 | changed_contents = TRUE; | |
768 | changed_relocs = TRUE; | |
769 | } | |
770 | } | |
771 | } | |
772 | ||
773 | /* ??? If we created fixups, this may push the code segment large | |
774 | enough that the data segment moves, which will change the GP. | |
775 | Reset the GP so that we re-calculate next round. We need to | |
776 | do this at the _beginning_ of the next round; now will not do. */ | |
777 | ||
778 | /* Clean up and go home. */ | |
779 | while (fixups) | |
780 | { | |
781 | struct one_fixup *f = fixups; | |
782 | fixups = fixups->next; | |
783 | free (f); | |
784 | } | |
785 | ||
786 | if (isymbuf != NULL | |
787 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
788 | { | |
789 | if (! link_info->keep_memory) | |
790 | free (isymbuf); | |
791 | else | |
792 | { | |
793 | /* Cache the symbols for elf_link_input_bfd. */ | |
794 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
795 | } | |
796 | } | |
797 | ||
798 | if (contents != NULL | |
799 | && elf_section_data (sec)->this_hdr.contents != contents) | |
800 | { | |
801 | if (!changed_contents && !link_info->keep_memory) | |
802 | free (contents); | |
803 | else | |
804 | { | |
805 | /* Cache the section contents for elf_link_input_bfd. */ | |
806 | elf_section_data (sec)->this_hdr.contents = contents; | |
807 | } | |
808 | } | |
809 | ||
810 | if (elf_section_data (sec)->relocs != internal_relocs) | |
811 | { | |
812 | if (!changed_relocs) | |
813 | free (internal_relocs); | |
814 | else | |
815 | elf_section_data (sec)->relocs = internal_relocs; | |
816 | } | |
817 | ||
818 | if (changed_got) | |
819 | { | |
820 | struct elfNN_ia64_allocate_data data; | |
821 | data.info = link_info; | |
822 | data.ofs = 0; | |
823 | ia64_info->self_dtpmod_offset = (bfd_vma) -1; | |
824 | ||
825 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data); | |
826 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data); | |
827 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data); | |
828 | ia64_info->root.sgot->size = data.ofs; | |
829 | ||
830 | if (ia64_info->root.dynamic_sections_created | |
831 | && ia64_info->root.srelgot != NULL) | |
832 | { | |
833 | /* Resize .rela.got. */ | |
834 | ia64_info->root.srelgot->size = 0; | |
835 | if (link_info->shared | |
836 | && ia64_info->self_dtpmod_offset != (bfd_vma) -1) | |
837 | ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela); | |
838 | data.only_got = TRUE; | |
839 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, | |
840 | &data); | |
841 | } | |
842 | } | |
843 | ||
844 | if (link_info->relax_pass == 0) | |
845 | { | |
846 | /* Pass 0 is only needed to relax br. */ | |
847 | sec->skip_relax_pass_0 = skip_relax_pass_0; | |
848 | sec->skip_relax_pass_1 = skip_relax_pass_1; | |
849 | } | |
850 | ||
851 | *again = changed_contents || changed_relocs; | |
852 | return TRUE; | |
853 | ||
854 | error_return: | |
855 | if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents) | |
856 | free (isymbuf); | |
857 | if (contents != NULL | |
858 | && elf_section_data (sec)->this_hdr.contents != contents) | |
859 | free (contents); | |
860 | if (internal_relocs != NULL | |
861 | && elf_section_data (sec)->relocs != internal_relocs) | |
862 | free (internal_relocs); | |
863 | return FALSE; | |
864 | } | |
865 | #undef skip_relax_pass_0 | |
866 | #undef skip_relax_pass_1 | |
867 | \f | |
868 | /* Return TRUE if NAME is an unwind table section name. */ | |
869 | ||
870 | static inline bfd_boolean | |
871 | is_unwind_section_name (bfd *abfd, const char *name) | |
872 | { | |
873 | if (elfNN_ia64_hpux_vec (abfd->xvec) | |
874 | && !strcmp (name, ELF_STRING_ia64_unwind_hdr)) | |
875 | return FALSE; | |
876 | ||
877 | return ((CONST_STRNEQ (name, ELF_STRING_ia64_unwind) | |
878 | && ! CONST_STRNEQ (name, ELF_STRING_ia64_unwind_info)) | |
879 | || CONST_STRNEQ (name, ELF_STRING_ia64_unwind_once)); | |
880 | } | |
881 | ||
882 | /* Handle an IA-64 specific section when reading an object file. This | |
883 | is called when bfd_section_from_shdr finds a section with an unknown | |
884 | type. */ | |
885 | ||
886 | static bfd_boolean | |
887 | elfNN_ia64_section_from_shdr (bfd *abfd, | |
888 | Elf_Internal_Shdr *hdr, | |
889 | const char *name, | |
890 | int shindex) | |
891 | { | |
892 | /* There ought to be a place to keep ELF backend specific flags, but | |
893 | at the moment there isn't one. We just keep track of the | |
894 | sections by their name, instead. Fortunately, the ABI gives | |
895 | suggested names for all the MIPS specific sections, so we will | |
896 | probably get away with this. */ | |
897 | switch (hdr->sh_type) | |
898 | { | |
899 | case SHT_IA_64_UNWIND: | |
900 | case SHT_IA_64_HP_OPT_ANOT: | |
901 | break; | |
902 | ||
903 | case SHT_IA_64_EXT: | |
904 | if (strcmp (name, ELF_STRING_ia64_archext) != 0) | |
905 | return FALSE; | |
906 | break; | |
907 | ||
908 | default: | |
909 | return FALSE; | |
910 | } | |
911 | ||
912 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
913 | return FALSE; | |
914 | ||
915 | return TRUE; | |
916 | } | |
917 | ||
918 | /* Convert IA-64 specific section flags to bfd internal section flags. */ | |
919 | ||
920 | /* ??? There is no bfd internal flag equivalent to the SHF_IA_64_NORECOV | |
921 | flag. */ | |
922 | ||
923 | static bfd_boolean | |
924 | elfNN_ia64_section_flags (flagword *flags, | |
925 | const Elf_Internal_Shdr *hdr) | |
926 | { | |
927 | if (hdr->sh_flags & SHF_IA_64_SHORT) | |
928 | *flags |= SEC_SMALL_DATA; | |
929 | ||
930 | return TRUE; | |
931 | } | |
932 | ||
933 | /* Set the correct type for an IA-64 ELF section. We do this by the | |
934 | section name, which is a hack, but ought to work. */ | |
935 | ||
936 | static bfd_boolean | |
937 | elfNN_ia64_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, | |
938 | asection *sec) | |
939 | { | |
940 | const char *name; | |
941 | ||
942 | name = bfd_get_section_name (abfd, sec); | |
943 | ||
944 | if (is_unwind_section_name (abfd, name)) | |
945 | { | |
946 | /* We don't have the sections numbered at this point, so sh_info | |
947 | is set later, in elfNN_ia64_final_write_processing. */ | |
948 | hdr->sh_type = SHT_IA_64_UNWIND; | |
949 | hdr->sh_flags |= SHF_LINK_ORDER; | |
950 | } | |
951 | else if (strcmp (name, ELF_STRING_ia64_archext) == 0) | |
952 | hdr->sh_type = SHT_IA_64_EXT; | |
953 | else if (strcmp (name, ".HP.opt_annot") == 0) | |
954 | hdr->sh_type = SHT_IA_64_HP_OPT_ANOT; | |
955 | else if (strcmp (name, ".reloc") == 0) | |
956 | /* This is an ugly, but unfortunately necessary hack that is | |
957 | needed when producing EFI binaries on IA-64. It tells | |
958 | elf.c:elf_fake_sections() not to consider ".reloc" as a section | |
959 | containing ELF relocation info. We need this hack in order to | |
960 | be able to generate ELF binaries that can be translated into | |
961 | EFI applications (which are essentially COFF objects). Those | |
962 | files contain a COFF ".reloc" section inside an ELFNN object, | |
963 | which would normally cause BFD to segfault because it would | |
964 | attempt to interpret this section as containing relocation | |
965 | entries for section "oc". With this hack enabled, ".reloc" | |
966 | will be treated as a normal data section, which will avoid the | |
967 | segfault. However, you won't be able to create an ELFNN binary | |
968 | with a section named "oc" that needs relocations, but that's | |
969 | the kind of ugly side-effects you get when detecting section | |
970 | types based on their names... In practice, this limitation is | |
971 | unlikely to bite. */ | |
972 | hdr->sh_type = SHT_PROGBITS; | |
973 | ||
974 | if (sec->flags & SEC_SMALL_DATA) | |
975 | hdr->sh_flags |= SHF_IA_64_SHORT; | |
976 | ||
977 | /* Some HP linkers look for the SHF_IA_64_HP_TLS flag instead of SHF_TLS. */ | |
978 | ||
979 | if (elfNN_ia64_hpux_vec (abfd->xvec) && (sec->flags & SHF_TLS)) | |
980 | hdr->sh_flags |= SHF_IA_64_HP_TLS; | |
981 | ||
982 | return TRUE; | |
983 | } | |
984 | ||
985 | /* The final processing done just before writing out an IA-64 ELF | |
986 | object file. */ | |
987 | ||
988 | static void | |
989 | elfNN_ia64_final_write_processing (bfd *abfd, | |
990 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
991 | { | |
992 | Elf_Internal_Shdr *hdr; | |
993 | asection *s; | |
994 | ||
995 | for (s = abfd->sections; s; s = s->next) | |
996 | { | |
997 | hdr = &elf_section_data (s)->this_hdr; | |
998 | switch (hdr->sh_type) | |
999 | { | |
1000 | case SHT_IA_64_UNWIND: | |
1001 | /* The IA-64 processor-specific ABI requires setting sh_link | |
1002 | to the unwind section, whereas HP-UX requires sh_info to | |
1003 | do so. For maximum compatibility, we'll set both for | |
1004 | now... */ | |
1005 | hdr->sh_info = hdr->sh_link; | |
1006 | break; | |
1007 | } | |
1008 | } | |
1009 | ||
1010 | if (! elf_flags_init (abfd)) | |
1011 | { | |
1012 | unsigned long flags = 0; | |
1013 | ||
1014 | if (abfd->xvec->byteorder == BFD_ENDIAN_BIG) | |
1015 | flags |= EF_IA_64_BE; | |
1016 | if (bfd_get_mach (abfd) == bfd_mach_ia64_elf64) | |
1017 | flags |= EF_IA_64_ABI64; | |
1018 | ||
1019 | elf_elfheader(abfd)->e_flags = flags; | |
1020 | elf_flags_init (abfd) = TRUE; | |
1021 | } | |
1022 | } | |
1023 | ||
1024 | /* Hook called by the linker routine which adds symbols from an object | |
1025 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
1026 | ||
1027 | static bfd_boolean | |
1028 | elfNN_ia64_add_symbol_hook (bfd *abfd, | |
1029 | struct bfd_link_info *info, | |
1030 | Elf_Internal_Sym *sym, | |
1031 | const char **namep ATTRIBUTE_UNUSED, | |
1032 | flagword *flagsp ATTRIBUTE_UNUSED, | |
1033 | asection **secp, | |
1034 | bfd_vma *valp) | |
1035 | { | |
1036 | if (sym->st_shndx == SHN_COMMON | |
1037 | && !info->relocatable | |
1038 | && sym->st_size <= elf_gp_size (abfd)) | |
1039 | { | |
1040 | /* Common symbols less than or equal to -G nn bytes are | |
1041 | automatically put into .sbss. */ | |
1042 | ||
1043 | asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); | |
1044 | ||
1045 | if (scomm == NULL) | |
1046 | { | |
1047 | scomm = bfd_make_section_with_flags (abfd, ".scommon", | |
1048 | (SEC_ALLOC | |
1049 | | SEC_IS_COMMON | |
1050 | | SEC_LINKER_CREATED)); | |
1051 | if (scomm == NULL) | |
1052 | return FALSE; | |
1053 | } | |
1054 | ||
1055 | *secp = scomm; | |
1056 | *valp = sym->st_size; | |
1057 | } | |
1058 | ||
1059 | return TRUE; | |
1060 | } | |
1061 | ||
1062 | /* Return the number of additional phdrs we will need. */ | |
1063 | ||
1064 | static int | |
1065 | elfNN_ia64_additional_program_headers (bfd *abfd, | |
1066 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
1067 | { | |
1068 | asection *s; | |
1069 | int ret = 0; | |
1070 | ||
1071 | /* See if we need a PT_IA_64_ARCHEXT segment. */ | |
1072 | s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext); | |
1073 | if (s && (s->flags & SEC_LOAD)) | |
1074 | ++ret; | |
1075 | ||
1076 | /* Count how many PT_IA_64_UNWIND segments we need. */ | |
1077 | for (s = abfd->sections; s; s = s->next) | |
1078 | if (is_unwind_section_name (abfd, s->name) && (s->flags & SEC_LOAD)) | |
1079 | ++ret; | |
1080 | ||
1081 | return ret; | |
1082 | } | |
1083 | ||
1084 | static bfd_boolean | |
1085 | elfNN_ia64_modify_segment_map (bfd *abfd, | |
1086 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
1087 | { | |
1088 | struct elf_segment_map *m, **pm; | |
1089 | Elf_Internal_Shdr *hdr; | |
1090 | asection *s; | |
1091 | ||
1092 | /* If we need a PT_IA_64_ARCHEXT segment, it must come before | |
1093 | all PT_LOAD segments. */ | |
1094 | s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext); | |
1095 | if (s && (s->flags & SEC_LOAD)) | |
1096 | { | |
12bd6957 | 1097 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
cbe79dfe TG |
1098 | if (m->p_type == PT_IA_64_ARCHEXT) |
1099 | break; | |
1100 | if (m == NULL) | |
1101 | { | |
1102 | m = ((struct elf_segment_map *) | |
1103 | bfd_zalloc (abfd, (bfd_size_type) sizeof *m)); | |
1104 | if (m == NULL) | |
1105 | return FALSE; | |
1106 | ||
1107 | m->p_type = PT_IA_64_ARCHEXT; | |
1108 | m->count = 1; | |
1109 | m->sections[0] = s; | |
1110 | ||
1111 | /* We want to put it after the PHDR and INTERP segments. */ | |
12bd6957 | 1112 | pm = &elf_seg_map (abfd); |
cbe79dfe TG |
1113 | while (*pm != NULL |
1114 | && ((*pm)->p_type == PT_PHDR | |
1115 | || (*pm)->p_type == PT_INTERP)) | |
1116 | pm = &(*pm)->next; | |
1117 | ||
1118 | m->next = *pm; | |
1119 | *pm = m; | |
1120 | } | |
1121 | } | |
1122 | ||
1123 | /* Install PT_IA_64_UNWIND segments, if needed. */ | |
1124 | for (s = abfd->sections; s; s = s->next) | |
1125 | { | |
1126 | hdr = &elf_section_data (s)->this_hdr; | |
1127 | if (hdr->sh_type != SHT_IA_64_UNWIND) | |
1128 | continue; | |
1129 | ||
1130 | if (s && (s->flags & SEC_LOAD)) | |
1131 | { | |
12bd6957 | 1132 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
cbe79dfe TG |
1133 | if (m->p_type == PT_IA_64_UNWIND) |
1134 | { | |
1135 | int i; | |
1136 | ||
1137 | /* Look through all sections in the unwind segment | |
1138 | for a match since there may be multiple sections | |
1139 | to a segment. */ | |
1140 | for (i = m->count - 1; i >= 0; --i) | |
1141 | if (m->sections[i] == s) | |
1142 | break; | |
1143 | ||
1144 | if (i >= 0) | |
1145 | break; | |
1146 | } | |
1147 | ||
1148 | if (m == NULL) | |
1149 | { | |
1150 | m = ((struct elf_segment_map *) | |
1151 | bfd_zalloc (abfd, (bfd_size_type) sizeof *m)); | |
1152 | if (m == NULL) | |
1153 | return FALSE; | |
1154 | ||
1155 | m->p_type = PT_IA_64_UNWIND; | |
1156 | m->count = 1; | |
1157 | m->sections[0] = s; | |
1158 | m->next = NULL; | |
1159 | ||
1160 | /* We want to put it last. */ | |
12bd6957 | 1161 | pm = &elf_seg_map (abfd); |
cbe79dfe TG |
1162 | while (*pm != NULL) |
1163 | pm = &(*pm)->next; | |
1164 | *pm = m; | |
1165 | } | |
1166 | } | |
1167 | } | |
1168 | ||
1169 | return TRUE; | |
1170 | } | |
1171 | ||
1172 | /* Turn on PF_IA_64_NORECOV if needed. This involves traversing all of | |
1173 | the input sections for each output section in the segment and testing | |
1174 | for SHF_IA_64_NORECOV on each. */ | |
1175 | ||
1176 | static bfd_boolean | |
1177 | elfNN_ia64_modify_program_headers (bfd *abfd, | |
1178 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
1179 | { | |
1180 | struct elf_obj_tdata *tdata = elf_tdata (abfd); | |
1181 | struct elf_segment_map *m; | |
1182 | Elf_Internal_Phdr *p; | |
1183 | ||
12bd6957 | 1184 | for (p = tdata->phdr, m = elf_seg_map (abfd); m != NULL; m = m->next, p++) |
cbe79dfe TG |
1185 | if (m->p_type == PT_LOAD) |
1186 | { | |
1187 | int i; | |
1188 | for (i = m->count - 1; i >= 0; --i) | |
1189 | { | |
1190 | struct bfd_link_order *order = m->sections[i]->map_head.link_order; | |
1191 | ||
1192 | while (order != NULL) | |
1193 | { | |
1194 | if (order->type == bfd_indirect_link_order) | |
1195 | { | |
1196 | asection *is = order->u.indirect.section; | |
1197 | bfd_vma flags = elf_section_data(is)->this_hdr.sh_flags; | |
1198 | if (flags & SHF_IA_64_NORECOV) | |
1199 | { | |
1200 | p->p_flags |= PF_IA_64_NORECOV; | |
1201 | goto found; | |
1202 | } | |
1203 | } | |
1204 | order = order->next; | |
1205 | } | |
1206 | } | |
1207 | found:; | |
1208 | } | |
1209 | ||
1210 | return TRUE; | |
1211 | } | |
1212 | ||
1213 | /* According to the Tahoe assembler spec, all labels starting with a | |
1214 | '.' are local. */ | |
1215 | ||
1216 | static bfd_boolean | |
1217 | elfNN_ia64_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, | |
1218 | const char *name) | |
1219 | { | |
1220 | return name[0] == '.'; | |
1221 | } | |
1222 | ||
1223 | /* Should we do dynamic things to this symbol? */ | |
1224 | ||
1225 | static bfd_boolean | |
1226 | elfNN_ia64_dynamic_symbol_p (struct elf_link_hash_entry *h, | |
1227 | struct bfd_link_info *info, int r_type) | |
1228 | { | |
1229 | bfd_boolean ignore_protected | |
1230 | = ((r_type & 0xf8) == 0x40 /* FPTR relocs */ | |
1231 | || (r_type & 0xf8) == 0x50); /* LTOFF_FPTR relocs */ | |
1232 | ||
1233 | return _bfd_elf_dynamic_symbol_p (h, info, ignore_protected); | |
1234 | } | |
1235 | \f | |
1236 | static struct bfd_hash_entry* | |
1237 | elfNN_ia64_new_elf_hash_entry (struct bfd_hash_entry *entry, | |
1238 | struct bfd_hash_table *table, | |
1239 | const char *string) | |
1240 | { | |
1241 | struct elfNN_ia64_link_hash_entry *ret; | |
1242 | ret = (struct elfNN_ia64_link_hash_entry *) entry; | |
1243 | ||
1244 | /* Allocate the structure if it has not already been allocated by a | |
1245 | subclass. */ | |
1246 | if (!ret) | |
1247 | ret = bfd_hash_allocate (table, sizeof (*ret)); | |
1248 | ||
1249 | if (!ret) | |
1250 | return 0; | |
1251 | ||
1252 | /* Call the allocation method of the superclass. */ | |
1253 | ret = ((struct elfNN_ia64_link_hash_entry *) | |
1254 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
1255 | table, string)); | |
1256 | ||
1257 | ret->info = NULL; | |
1258 | ret->count = 0; | |
1259 | ret->sorted_count = 0; | |
1260 | ret->size = 0; | |
1261 | return (struct bfd_hash_entry *) ret; | |
1262 | } | |
1263 | ||
1264 | static void | |
1265 | elfNN_ia64_hash_copy_indirect (struct bfd_link_info *info, | |
1266 | struct elf_link_hash_entry *xdir, | |
1267 | struct elf_link_hash_entry *xind) | |
1268 | { | |
1269 | struct elfNN_ia64_link_hash_entry *dir, *ind; | |
1270 | ||
1271 | dir = (struct elfNN_ia64_link_hash_entry *) xdir; | |
1272 | ind = (struct elfNN_ia64_link_hash_entry *) xind; | |
1273 | ||
1274 | /* Copy down any references that we may have already seen to the | |
1275 | symbol which just became indirect. */ | |
1276 | ||
1277 | dir->root.ref_dynamic |= ind->root.ref_dynamic; | |
1278 | dir->root.ref_regular |= ind->root.ref_regular; | |
1279 | dir->root.ref_regular_nonweak |= ind->root.ref_regular_nonweak; | |
1280 | dir->root.needs_plt |= ind->root.needs_plt; | |
1281 | ||
1282 | if (ind->root.root.type != bfd_link_hash_indirect) | |
1283 | return; | |
1284 | ||
1285 | /* Copy over the got and plt data. This would have been done | |
1286 | by check_relocs. */ | |
1287 | ||
1288 | if (ind->info != NULL) | |
1289 | { | |
1290 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
1291 | unsigned int count; | |
1292 | ||
1293 | if (dir->info) | |
1294 | free (dir->info); | |
1295 | ||
1296 | dir->info = ind->info; | |
1297 | dir->count = ind->count; | |
1298 | dir->sorted_count = ind->sorted_count; | |
1299 | dir->size = ind->size; | |
1300 | ||
1301 | ind->info = NULL; | |
1302 | ind->count = 0; | |
1303 | ind->sorted_count = 0; | |
1304 | ind->size = 0; | |
1305 | ||
1306 | /* Fix up the dyn_sym_info pointers to the global symbol. */ | |
1307 | for (count = dir->count, dyn_i = dir->info; | |
1308 | count != 0; | |
1309 | count--, dyn_i++) | |
1310 | dyn_i->h = &dir->root; | |
1311 | } | |
1312 | ||
1313 | /* Copy over the dynindx. */ | |
1314 | ||
1315 | if (ind->root.dynindx != -1) | |
1316 | { | |
1317 | if (dir->root.dynindx != -1) | |
1318 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
1319 | dir->root.dynstr_index); | |
1320 | dir->root.dynindx = ind->root.dynindx; | |
1321 | dir->root.dynstr_index = ind->root.dynstr_index; | |
1322 | ind->root.dynindx = -1; | |
1323 | ind->root.dynstr_index = 0; | |
1324 | } | |
1325 | } | |
1326 | ||
1327 | static void | |
1328 | elfNN_ia64_hash_hide_symbol (struct bfd_link_info *info, | |
1329 | struct elf_link_hash_entry *xh, | |
1330 | bfd_boolean force_local) | |
1331 | { | |
1332 | struct elfNN_ia64_link_hash_entry *h; | |
1333 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
1334 | unsigned int count; | |
1335 | ||
1336 | h = (struct elfNN_ia64_link_hash_entry *)xh; | |
1337 | ||
1338 | _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local); | |
1339 | ||
1340 | for (count = h->count, dyn_i = h->info; | |
1341 | count != 0; | |
1342 | count--, dyn_i++) | |
1343 | { | |
1344 | dyn_i->want_plt2 = 0; | |
1345 | dyn_i->want_plt = 0; | |
1346 | } | |
1347 | } | |
1348 | ||
1349 | /* Compute a hash of a local hash entry. */ | |
1350 | ||
1351 | static hashval_t | |
1352 | elfNN_ia64_local_htab_hash (const void *ptr) | |
1353 | { | |
1354 | struct elfNN_ia64_local_hash_entry *entry | |
1355 | = (struct elfNN_ia64_local_hash_entry *) ptr; | |
1356 | ||
1357 | return ELF_LOCAL_SYMBOL_HASH (entry->id, entry->r_sym); | |
1358 | } | |
1359 | ||
1360 | /* Compare local hash entries. */ | |
1361 | ||
1362 | static int | |
1363 | elfNN_ia64_local_htab_eq (const void *ptr1, const void *ptr2) | |
1364 | { | |
1365 | struct elfNN_ia64_local_hash_entry *entry1 | |
1366 | = (struct elfNN_ia64_local_hash_entry *) ptr1; | |
1367 | struct elfNN_ia64_local_hash_entry *entry2 | |
1368 | = (struct elfNN_ia64_local_hash_entry *) ptr2; | |
1369 | ||
1370 | return entry1->id == entry2->id && entry1->r_sym == entry2->r_sym; | |
1371 | } | |
1372 | ||
1373 | /* Create the derived linker hash table. The IA-64 ELF port uses this | |
1374 | derived hash table to keep information specific to the IA-64 ElF | |
1375 | linker (without using static variables). */ | |
1376 | ||
1377 | static struct bfd_link_hash_table * | |
1378 | elfNN_ia64_hash_table_create (bfd *abfd) | |
1379 | { | |
1380 | struct elfNN_ia64_link_hash_table *ret; | |
1381 | ||
1382 | ret = bfd_zmalloc ((bfd_size_type) sizeof (*ret)); | |
1383 | if (!ret) | |
1384 | return NULL; | |
1385 | ||
1386 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, | |
1387 | elfNN_ia64_new_elf_hash_entry, | |
1388 | sizeof (struct elfNN_ia64_link_hash_entry), | |
1389 | IA64_ELF_DATA)) | |
1390 | { | |
1391 | free (ret); | |
1392 | return NULL; | |
1393 | } | |
1394 | ||
1395 | ret->loc_hash_table = htab_try_create (1024, elfNN_ia64_local_htab_hash, | |
1396 | elfNN_ia64_local_htab_eq, NULL); | |
1397 | ret->loc_hash_memory = objalloc_create (); | |
1398 | if (!ret->loc_hash_table || !ret->loc_hash_memory) | |
1399 | { | |
1400 | free (ret); | |
1401 | return NULL; | |
1402 | } | |
1403 | ||
1404 | return &ret->root.root; | |
1405 | } | |
1406 | ||
1407 | /* Free the global elfNN_ia64_dyn_sym_info array. */ | |
1408 | ||
1409 | static bfd_boolean | |
1410 | elfNN_ia64_global_dyn_info_free (void **xentry, | |
2c3fc389 | 1411 | void * unused ATTRIBUTE_UNUSED) |
cbe79dfe TG |
1412 | { |
1413 | struct elfNN_ia64_link_hash_entry *entry | |
1414 | = (struct elfNN_ia64_link_hash_entry *) xentry; | |
1415 | ||
cbe79dfe TG |
1416 | if (entry->info) |
1417 | { | |
1418 | free (entry->info); | |
1419 | entry->info = NULL; | |
1420 | entry->count = 0; | |
1421 | entry->sorted_count = 0; | |
1422 | entry->size = 0; | |
1423 | } | |
1424 | ||
1425 | return TRUE; | |
1426 | } | |
1427 | ||
1428 | /* Free the local elfNN_ia64_dyn_sym_info array. */ | |
1429 | ||
1430 | static bfd_boolean | |
1431 | elfNN_ia64_local_dyn_info_free (void **slot, | |
2c3fc389 | 1432 | void * unused ATTRIBUTE_UNUSED) |
cbe79dfe TG |
1433 | { |
1434 | struct elfNN_ia64_local_hash_entry *entry | |
1435 | = (struct elfNN_ia64_local_hash_entry *) *slot; | |
1436 | ||
1437 | if (entry->info) | |
1438 | { | |
1439 | free (entry->info); | |
1440 | entry->info = NULL; | |
1441 | entry->count = 0; | |
1442 | entry->sorted_count = 0; | |
1443 | entry->size = 0; | |
1444 | } | |
1445 | ||
1446 | return TRUE; | |
1447 | } | |
1448 | ||
1449 | /* Destroy IA-64 linker hash table. */ | |
1450 | ||
1451 | static void | |
1452 | elfNN_ia64_hash_table_free (struct bfd_link_hash_table *hash) | |
1453 | { | |
1454 | struct elfNN_ia64_link_hash_table *ia64_info | |
1455 | = (struct elfNN_ia64_link_hash_table *) hash; | |
1456 | if (ia64_info->loc_hash_table) | |
1457 | { | |
1458 | htab_traverse (ia64_info->loc_hash_table, | |
1459 | elfNN_ia64_local_dyn_info_free, NULL); | |
1460 | htab_delete (ia64_info->loc_hash_table); | |
1461 | } | |
1462 | if (ia64_info->loc_hash_memory) | |
1463 | objalloc_free ((struct objalloc *) ia64_info->loc_hash_memory); | |
1464 | elf_link_hash_traverse (&ia64_info->root, | |
1465 | elfNN_ia64_global_dyn_info_free, NULL); | |
9f7c3e5e | 1466 | _bfd_elf_link_hash_table_free (hash); |
cbe79dfe TG |
1467 | } |
1468 | ||
1469 | /* Traverse both local and global hash tables. */ | |
1470 | ||
1471 | struct elfNN_ia64_dyn_sym_traverse_data | |
1472 | { | |
2c3fc389 NC |
1473 | bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *); |
1474 | void * data; | |
cbe79dfe TG |
1475 | }; |
1476 | ||
1477 | static bfd_boolean | |
1478 | elfNN_ia64_global_dyn_sym_thunk (struct bfd_hash_entry *xentry, | |
2c3fc389 | 1479 | void * xdata) |
cbe79dfe TG |
1480 | { |
1481 | struct elfNN_ia64_link_hash_entry *entry | |
1482 | = (struct elfNN_ia64_link_hash_entry *) xentry; | |
1483 | struct elfNN_ia64_dyn_sym_traverse_data *data | |
1484 | = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata; | |
1485 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
1486 | unsigned int count; | |
1487 | ||
cbe79dfe TG |
1488 | for (count = entry->count, dyn_i = entry->info; |
1489 | count != 0; | |
1490 | count--, dyn_i++) | |
1491 | if (! (*data->func) (dyn_i, data->data)) | |
1492 | return FALSE; | |
1493 | return TRUE; | |
1494 | } | |
1495 | ||
1496 | static bfd_boolean | |
2c3fc389 | 1497 | elfNN_ia64_local_dyn_sym_thunk (void **slot, void * xdata) |
cbe79dfe TG |
1498 | { |
1499 | struct elfNN_ia64_local_hash_entry *entry | |
1500 | = (struct elfNN_ia64_local_hash_entry *) *slot; | |
1501 | struct elfNN_ia64_dyn_sym_traverse_data *data | |
1502 | = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata; | |
1503 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
1504 | unsigned int count; | |
1505 | ||
1506 | for (count = entry->count, dyn_i = entry->info; | |
1507 | count != 0; | |
1508 | count--, dyn_i++) | |
1509 | if (! (*data->func) (dyn_i, data->data)) | |
1510 | return FALSE; | |
1511 | return TRUE; | |
1512 | } | |
1513 | ||
1514 | static void | |
1515 | elfNN_ia64_dyn_sym_traverse (struct elfNN_ia64_link_hash_table *ia64_info, | |
2c3fc389 NC |
1516 | bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *), |
1517 | void * data) | |
cbe79dfe TG |
1518 | { |
1519 | struct elfNN_ia64_dyn_sym_traverse_data xdata; | |
1520 | ||
1521 | xdata.func = func; | |
1522 | xdata.data = data; | |
1523 | ||
1524 | elf_link_hash_traverse (&ia64_info->root, | |
1525 | elfNN_ia64_global_dyn_sym_thunk, &xdata); | |
1526 | htab_traverse (ia64_info->loc_hash_table, | |
1527 | elfNN_ia64_local_dyn_sym_thunk, &xdata); | |
1528 | } | |
1529 | \f | |
1530 | static bfd_boolean | |
1531 | elfNN_ia64_create_dynamic_sections (bfd *abfd, | |
1532 | struct bfd_link_info *info) | |
1533 | { | |
1534 | struct elfNN_ia64_link_hash_table *ia64_info; | |
1535 | asection *s; | |
1536 | ||
1537 | if (! _bfd_elf_create_dynamic_sections (abfd, info)) | |
1538 | return FALSE; | |
1539 | ||
1540 | ia64_info = elfNN_ia64_hash_table (info); | |
1541 | if (ia64_info == NULL) | |
1542 | return FALSE; | |
1543 | ||
1544 | { | |
1545 | flagword flags = bfd_get_section_flags (abfd, ia64_info->root.sgot); | |
1546 | bfd_set_section_flags (abfd, ia64_info->root.sgot, | |
1547 | SEC_SMALL_DATA | flags); | |
1548 | /* The .got section is always aligned at 8 bytes. */ | |
1549 | bfd_set_section_alignment (abfd, ia64_info->root.sgot, 3); | |
1550 | } | |
1551 | ||
1552 | if (!get_pltoff (abfd, info, ia64_info)) | |
1553 | return FALSE; | |
1554 | ||
3d4d4302 AM |
1555 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.IA_64.pltoff", |
1556 | (SEC_ALLOC | SEC_LOAD | |
1557 | | SEC_HAS_CONTENTS | |
1558 | | SEC_IN_MEMORY | |
1559 | | SEC_LINKER_CREATED | |
1560 | | SEC_READONLY)); | |
cbe79dfe TG |
1561 | if (s == NULL |
1562 | || !bfd_set_section_alignment (abfd, s, LOG_SECTION_ALIGN)) | |
1563 | return FALSE; | |
1564 | ia64_info->rel_pltoff_sec = s; | |
1565 | ||
1566 | return TRUE; | |
1567 | } | |
1568 | ||
1569 | /* Find and/or create a hash entry for local symbol. */ | |
1570 | static struct elfNN_ia64_local_hash_entry * | |
1571 | get_local_sym_hash (struct elfNN_ia64_link_hash_table *ia64_info, | |
1572 | bfd *abfd, const Elf_Internal_Rela *rel, | |
1573 | bfd_boolean create) | |
1574 | { | |
1575 | struct elfNN_ia64_local_hash_entry e, *ret; | |
1576 | asection *sec = abfd->sections; | |
1577 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, | |
1578 | ELFNN_R_SYM (rel->r_info)); | |
1579 | void **slot; | |
1580 | ||
1581 | e.id = sec->id; | |
1582 | e.r_sym = ELFNN_R_SYM (rel->r_info); | |
1583 | slot = htab_find_slot_with_hash (ia64_info->loc_hash_table, &e, h, | |
1584 | create ? INSERT : NO_INSERT); | |
1585 | ||
1586 | if (!slot) | |
1587 | return NULL; | |
1588 | ||
1589 | if (*slot) | |
1590 | return (struct elfNN_ia64_local_hash_entry *) *slot; | |
1591 | ||
1592 | ret = (struct elfNN_ia64_local_hash_entry *) | |
1593 | objalloc_alloc ((struct objalloc *) ia64_info->loc_hash_memory, | |
1594 | sizeof (struct elfNN_ia64_local_hash_entry)); | |
1595 | if (ret) | |
1596 | { | |
1597 | memset (ret, 0, sizeof (*ret)); | |
1598 | ret->id = sec->id; | |
1599 | ret->r_sym = ELFNN_R_SYM (rel->r_info); | |
1600 | *slot = ret; | |
1601 | } | |
1602 | return ret; | |
1603 | } | |
1604 | ||
1605 | /* Used to sort elfNN_ia64_dyn_sym_info array. */ | |
1606 | ||
1607 | static int | |
1608 | addend_compare (const void *xp, const void *yp) | |
1609 | { | |
1610 | const struct elfNN_ia64_dyn_sym_info *x | |
1611 | = (const struct elfNN_ia64_dyn_sym_info *) xp; | |
1612 | const struct elfNN_ia64_dyn_sym_info *y | |
1613 | = (const struct elfNN_ia64_dyn_sym_info *) yp; | |
1614 | ||
1615 | return x->addend < y->addend ? -1 : x->addend > y->addend ? 1 : 0; | |
1616 | } | |
1617 | ||
1618 | /* Sort elfNN_ia64_dyn_sym_info array and remove duplicates. */ | |
1619 | ||
1620 | static unsigned int | |
1621 | sort_dyn_sym_info (struct elfNN_ia64_dyn_sym_info *info, | |
1622 | unsigned int count) | |
1623 | { | |
1624 | bfd_vma curr, prev, got_offset; | |
1625 | unsigned int i, kept, dupes, diff, dest, src, len; | |
1626 | ||
1627 | qsort (info, count, sizeof (*info), addend_compare); | |
1628 | ||
1629 | /* Find the first duplicate. */ | |
1630 | prev = info [0].addend; | |
1631 | got_offset = info [0].got_offset; | |
1632 | for (i = 1; i < count; i++) | |
1633 | { | |
1634 | curr = info [i].addend; | |
1635 | if (curr == prev) | |
1636 | { | |
1637 | /* For duplicates, make sure that GOT_OFFSET is valid. */ | |
1638 | if (got_offset == (bfd_vma) -1) | |
1639 | got_offset = info [i].got_offset; | |
1640 | break; | |
1641 | } | |
1642 | got_offset = info [i].got_offset; | |
1643 | prev = curr; | |
1644 | } | |
1645 | ||
1646 | /* We may move a block of elements to here. */ | |
1647 | dest = i++; | |
1648 | ||
1649 | /* Remove duplicates. */ | |
1650 | if (i < count) | |
1651 | { | |
1652 | while (i < count) | |
1653 | { | |
1654 | /* For duplicates, make sure that the kept one has a valid | |
1655 | got_offset. */ | |
1656 | kept = dest - 1; | |
1657 | if (got_offset != (bfd_vma) -1) | |
1658 | info [kept].got_offset = got_offset; | |
1659 | ||
1660 | curr = info [i].addend; | |
1661 | got_offset = info [i].got_offset; | |
1662 | ||
1663 | /* Move a block of elements whose first one is different from | |
1664 | the previous. */ | |
1665 | if (curr == prev) | |
1666 | { | |
1667 | for (src = i + 1; src < count; src++) | |
1668 | { | |
1669 | if (info [src].addend != curr) | |
1670 | break; | |
1671 | /* For duplicates, make sure that GOT_OFFSET is | |
1672 | valid. */ | |
1673 | if (got_offset == (bfd_vma) -1) | |
1674 | got_offset = info [src].got_offset; | |
1675 | } | |
1676 | ||
1677 | /* Make sure that the kept one has a valid got_offset. */ | |
1678 | if (got_offset != (bfd_vma) -1) | |
1679 | info [kept].got_offset = got_offset; | |
1680 | } | |
1681 | else | |
1682 | src = i; | |
1683 | ||
1684 | if (src >= count) | |
1685 | break; | |
1686 | ||
1687 | /* Find the next duplicate. SRC will be kept. */ | |
1688 | prev = info [src].addend; | |
1689 | got_offset = info [src].got_offset; | |
1690 | for (dupes = src + 1; dupes < count; dupes ++) | |
1691 | { | |
1692 | curr = info [dupes].addend; | |
1693 | if (curr == prev) | |
1694 | { | |
1695 | /* Make sure that got_offset is valid. */ | |
1696 | if (got_offset == (bfd_vma) -1) | |
1697 | got_offset = info [dupes].got_offset; | |
1698 | ||
1699 | /* For duplicates, make sure that the kept one has | |
1700 | a valid got_offset. */ | |
1701 | if (got_offset != (bfd_vma) -1) | |
1702 | info [dupes - 1].got_offset = got_offset; | |
1703 | break; | |
1704 | } | |
1705 | got_offset = info [dupes].got_offset; | |
1706 | prev = curr; | |
1707 | } | |
1708 | ||
1709 | /* How much to move. */ | |
1710 | len = dupes - src; | |
1711 | i = dupes + 1; | |
1712 | ||
1713 | if (len == 1 && dupes < count) | |
1714 | { | |
1715 | /* If we only move 1 element, we combine it with the next | |
1716 | one. There must be at least a duplicate. Find the | |
1717 | next different one. */ | |
1718 | for (diff = dupes + 1, src++; diff < count; diff++, src++) | |
1719 | { | |
1720 | if (info [diff].addend != curr) | |
1721 | break; | |
1722 | /* Make sure that got_offset is valid. */ | |
1723 | if (got_offset == (bfd_vma) -1) | |
1724 | got_offset = info [diff].got_offset; | |
1725 | } | |
1726 | ||
1727 | /* Makre sure that the last duplicated one has an valid | |
1728 | offset. */ | |
1729 | BFD_ASSERT (curr == prev); | |
1730 | if (got_offset != (bfd_vma) -1) | |
1731 | info [diff - 1].got_offset = got_offset; | |
1732 | ||
1733 | if (diff < count) | |
1734 | { | |
1735 | /* Find the next duplicate. Track the current valid | |
1736 | offset. */ | |
1737 | prev = info [diff].addend; | |
1738 | got_offset = info [diff].got_offset; | |
1739 | for (dupes = diff + 1; dupes < count; dupes ++) | |
1740 | { | |
1741 | curr = info [dupes].addend; | |
1742 | if (curr == prev) | |
1743 | { | |
1744 | /* For duplicates, make sure that GOT_OFFSET | |
1745 | is valid. */ | |
1746 | if (got_offset == (bfd_vma) -1) | |
1747 | got_offset = info [dupes].got_offset; | |
1748 | break; | |
1749 | } | |
1750 | got_offset = info [dupes].got_offset; | |
1751 | prev = curr; | |
1752 | diff++; | |
1753 | } | |
1754 | ||
1755 | len = diff - src + 1; | |
1756 | i = diff + 1; | |
1757 | } | |
1758 | } | |
1759 | ||
1760 | memmove (&info [dest], &info [src], len * sizeof (*info)); | |
1761 | ||
1762 | dest += len; | |
1763 | } | |
1764 | ||
1765 | count = dest; | |
1766 | } | |
1767 | else | |
1768 | { | |
1769 | /* When we get here, either there is no duplicate at all or | |
1770 | the only duplicate is the last element. */ | |
1771 | if (dest < count) | |
1772 | { | |
1773 | /* If the last element is a duplicate, make sure that the | |
1774 | kept one has a valid got_offset. We also update count. */ | |
1775 | if (got_offset != (bfd_vma) -1) | |
1776 | info [dest - 1].got_offset = got_offset; | |
1777 | count = dest; | |
1778 | } | |
1779 | } | |
1780 | ||
1781 | return count; | |
1782 | } | |
1783 | ||
1784 | /* Find and/or create a descriptor for dynamic symbol info. This will | |
1785 | vary based on global or local symbol, and the addend to the reloc. | |
1786 | ||
1787 | We don't sort when inserting. Also, we sort and eliminate | |
1788 | duplicates if there is an unsorted section. Typically, this will | |
1789 | only happen once, because we do all insertions before lookups. We | |
1790 | then use bsearch to do a lookup. This also allows lookups to be | |
1791 | fast. So we have fast insertion (O(log N) due to duplicate check), | |
1792 | fast lookup (O(log N)) and one sort (O(N log N) expected time). | |
1793 | Previously, all lookups were O(N) because of the use of the linked | |
1794 | list and also all insertions were O(N) because of the check for | |
1795 | duplicates. There are some complications here because the array | |
1796 | size grows occasionally, which may add an O(N) factor, but this | |
1797 | should be rare. Also, we free the excess array allocation, which | |
1798 | requires a copy which is O(N), but this only happens once. */ | |
1799 | ||
1800 | static struct elfNN_ia64_dyn_sym_info * | |
1801 | get_dyn_sym_info (struct elfNN_ia64_link_hash_table *ia64_info, | |
1802 | struct elf_link_hash_entry *h, bfd *abfd, | |
1803 | const Elf_Internal_Rela *rel, bfd_boolean create) | |
1804 | { | |
1805 | struct elfNN_ia64_dyn_sym_info **info_p, *info, *dyn_i, key; | |
1806 | unsigned int *count_p, *sorted_count_p, *size_p; | |
1807 | unsigned int count, sorted_count, size; | |
1808 | bfd_vma addend = rel ? rel->r_addend : 0; | |
1809 | bfd_size_type amt; | |
1810 | ||
1811 | if (h) | |
1812 | { | |
1813 | struct elfNN_ia64_link_hash_entry *global_h; | |
1814 | ||
1815 | global_h = (struct elfNN_ia64_link_hash_entry *) h; | |
1816 | info_p = &global_h->info; | |
1817 | count_p = &global_h->count; | |
1818 | sorted_count_p = &global_h->sorted_count; | |
1819 | size_p = &global_h->size; | |
1820 | } | |
1821 | else | |
1822 | { | |
1823 | struct elfNN_ia64_local_hash_entry *loc_h; | |
1824 | ||
1825 | loc_h = get_local_sym_hash (ia64_info, abfd, rel, create); | |
1826 | if (!loc_h) | |
1827 | { | |
1828 | BFD_ASSERT (!create); | |
1829 | return NULL; | |
1830 | } | |
1831 | ||
1832 | info_p = &loc_h->info; | |
1833 | count_p = &loc_h->count; | |
1834 | sorted_count_p = &loc_h->sorted_count; | |
1835 | size_p = &loc_h->size; | |
1836 | } | |
1837 | ||
1838 | count = *count_p; | |
1839 | sorted_count = *sorted_count_p; | |
1840 | size = *size_p; | |
1841 | info = *info_p; | |
1842 | if (create) | |
1843 | { | |
1844 | /* When we create the array, we don't check for duplicates, | |
1845 | except in the previously sorted section if one exists, and | |
1846 | against the last inserted entry. This allows insertions to | |
1847 | be fast. */ | |
1848 | if (info) | |
1849 | { | |
1850 | if (sorted_count) | |
1851 | { | |
1852 | /* Try bsearch first on the sorted section. */ | |
1853 | key.addend = addend; | |
1854 | dyn_i = bsearch (&key, info, sorted_count, | |
1855 | sizeof (*info), addend_compare); | |
1856 | ||
1857 | if (dyn_i) | |
1858 | { | |
1859 | return dyn_i; | |
1860 | } | |
1861 | } | |
1862 | ||
1863 | /* Do a quick check for the last inserted entry. */ | |
1864 | dyn_i = info + count - 1; | |
1865 | if (dyn_i->addend == addend) | |
1866 | { | |
1867 | return dyn_i; | |
1868 | } | |
1869 | } | |
1870 | ||
1871 | if (size == 0) | |
1872 | { | |
1873 | /* It is the very first element. We create the array of size | |
1874 | 1. */ | |
1875 | size = 1; | |
1876 | amt = size * sizeof (*info); | |
1877 | info = bfd_malloc (amt); | |
1878 | } | |
1879 | else if (size <= count) | |
1880 | { | |
1881 | /* We double the array size every time when we reach the | |
1882 | size limit. */ | |
1883 | size += size; | |
1884 | amt = size * sizeof (*info); | |
1885 | info = bfd_realloc (info, amt); | |
1886 | } | |
1887 | else | |
1888 | goto has_space; | |
1889 | ||
1890 | if (info == NULL) | |
1891 | return NULL; | |
1892 | *size_p = size; | |
1893 | *info_p = info; | |
1894 | ||
1895 | has_space: | |
1896 | /* Append the new one to the array. */ | |
1897 | dyn_i = info + count; | |
1898 | memset (dyn_i, 0, sizeof (*dyn_i)); | |
1899 | dyn_i->got_offset = (bfd_vma) -1; | |
1900 | dyn_i->addend = addend; | |
1901 | ||
1902 | /* We increment count only since the new ones are unsorted and | |
1903 | may have duplicate. */ | |
1904 | (*count_p)++; | |
1905 | } | |
1906 | else | |
1907 | { | |
1908 | /* It is a lookup without insertion. Sort array if part of the | |
1909 | array isn't sorted. */ | |
1910 | if (count != sorted_count) | |
1911 | { | |
1912 | count = sort_dyn_sym_info (info, count); | |
1913 | *count_p = count; | |
1914 | *sorted_count_p = count; | |
1915 | } | |
1916 | ||
1917 | /* Free unused memory. */ | |
1918 | if (size != count) | |
1919 | { | |
1920 | amt = count * sizeof (*info); | |
1921 | info = bfd_malloc (amt); | |
1922 | if (info != NULL) | |
1923 | { | |
1924 | memcpy (info, *info_p, amt); | |
1925 | free (*info_p); | |
1926 | *size_p = count; | |
1927 | *info_p = info; | |
1928 | } | |
1929 | } | |
1930 | ||
1931 | key.addend = addend; | |
1932 | dyn_i = bsearch (&key, info, count, | |
1933 | sizeof (*info), addend_compare); | |
1934 | } | |
1935 | ||
1936 | return dyn_i; | |
1937 | } | |
1938 | ||
1939 | static asection * | |
1940 | get_got (bfd *abfd, struct bfd_link_info *info, | |
1941 | struct elfNN_ia64_link_hash_table *ia64_info) | |
1942 | { | |
1943 | asection *got; | |
1944 | bfd *dynobj; | |
1945 | ||
1946 | got = ia64_info->root.sgot; | |
1947 | if (!got) | |
1948 | { | |
1949 | flagword flags; | |
1950 | ||
1951 | dynobj = ia64_info->root.dynobj; | |
1952 | if (!dynobj) | |
1953 | ia64_info->root.dynobj = dynobj = abfd; | |
1954 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
1955 | return 0; | |
1956 | ||
1957 | got = ia64_info->root.sgot; | |
1958 | ||
1959 | /* The .got section is always aligned at 8 bytes. */ | |
1960 | if (!bfd_set_section_alignment (abfd, got, 3)) | |
1961 | return 0; | |
1962 | ||
1963 | flags = bfd_get_section_flags (abfd, got); | |
1964 | bfd_set_section_flags (abfd, got, SEC_SMALL_DATA | flags); | |
1965 | } | |
1966 | ||
1967 | return got; | |
1968 | } | |
1969 | ||
1970 | /* Create function descriptor section (.opd). This section is called .opd | |
1971 | because it contains "official procedure descriptors". The "official" | |
1972 | refers to the fact that these descriptors are used when taking the address | |
1973 | of a procedure, thus ensuring a unique address for each procedure. */ | |
1974 | ||
1975 | static asection * | |
1976 | get_fptr (bfd *abfd, struct bfd_link_info *info, | |
1977 | struct elfNN_ia64_link_hash_table *ia64_info) | |
1978 | { | |
1979 | asection *fptr; | |
1980 | bfd *dynobj; | |
1981 | ||
1982 | fptr = ia64_info->fptr_sec; | |
1983 | if (!fptr) | |
1984 | { | |
1985 | dynobj = ia64_info->root.dynobj; | |
1986 | if (!dynobj) | |
1987 | ia64_info->root.dynobj = dynobj = abfd; | |
1988 | ||
3d4d4302 AM |
1989 | fptr = bfd_make_section_anyway_with_flags (dynobj, ".opd", |
1990 | (SEC_ALLOC | |
1991 | | SEC_LOAD | |
1992 | | SEC_HAS_CONTENTS | |
1993 | | SEC_IN_MEMORY | |
1994 | | (info->pie ? 0 | |
1995 | : SEC_READONLY) | |
1996 | | SEC_LINKER_CREATED)); | |
cbe79dfe TG |
1997 | if (!fptr |
1998 | || !bfd_set_section_alignment (abfd, fptr, 4)) | |
1999 | { | |
2000 | BFD_ASSERT (0); | |
2001 | return NULL; | |
2002 | } | |
2003 | ||
2004 | ia64_info->fptr_sec = fptr; | |
2005 | ||
2006 | if (info->pie) | |
2007 | { | |
2008 | asection *fptr_rel; | |
3d4d4302 AM |
2009 | fptr_rel = bfd_make_section_anyway_with_flags (dynobj, ".rela.opd", |
2010 | (SEC_ALLOC | SEC_LOAD | |
2011 | | SEC_HAS_CONTENTS | |
2012 | | SEC_IN_MEMORY | |
2013 | | SEC_LINKER_CREATED | |
2014 | | SEC_READONLY)); | |
cbe79dfe TG |
2015 | if (fptr_rel == NULL |
2016 | || !bfd_set_section_alignment (abfd, fptr_rel, | |
2017 | LOG_SECTION_ALIGN)) | |
2018 | { | |
2019 | BFD_ASSERT (0); | |
2020 | return NULL; | |
2021 | } | |
2022 | ||
2023 | ia64_info->rel_fptr_sec = fptr_rel; | |
2024 | } | |
2025 | } | |
2026 | ||
2027 | return fptr; | |
2028 | } | |
2029 | ||
2030 | static asection * | |
2031 | get_pltoff (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2032 | struct elfNN_ia64_link_hash_table *ia64_info) | |
2033 | { | |
2034 | asection *pltoff; | |
2035 | bfd *dynobj; | |
2036 | ||
2037 | pltoff = ia64_info->pltoff_sec; | |
2038 | if (!pltoff) | |
2039 | { | |
2040 | dynobj = ia64_info->root.dynobj; | |
2041 | if (!dynobj) | |
2042 | ia64_info->root.dynobj = dynobj = abfd; | |
2043 | ||
3d4d4302 AM |
2044 | pltoff = bfd_make_section_anyway_with_flags (dynobj, |
2045 | ELF_STRING_ia64_pltoff, | |
2046 | (SEC_ALLOC | |
2047 | | SEC_LOAD | |
2048 | | SEC_HAS_CONTENTS | |
2049 | | SEC_IN_MEMORY | |
2050 | | SEC_SMALL_DATA | |
2051 | | SEC_LINKER_CREATED)); | |
cbe79dfe TG |
2052 | if (!pltoff |
2053 | || !bfd_set_section_alignment (abfd, pltoff, 4)) | |
2054 | { | |
2055 | BFD_ASSERT (0); | |
2056 | return NULL; | |
2057 | } | |
2058 | ||
2059 | ia64_info->pltoff_sec = pltoff; | |
2060 | } | |
2061 | ||
2062 | return pltoff; | |
2063 | } | |
2064 | ||
2065 | static asection * | |
2066 | get_reloc_section (bfd *abfd, | |
2067 | struct elfNN_ia64_link_hash_table *ia64_info, | |
2068 | asection *sec, bfd_boolean create) | |
2069 | { | |
2070 | const char *srel_name; | |
2071 | asection *srel; | |
2072 | bfd *dynobj; | |
2073 | ||
2074 | srel_name = (bfd_elf_string_from_elf_section | |
2075 | (abfd, elf_elfheader(abfd)->e_shstrndx, | |
2076 | _bfd_elf_single_rel_hdr (sec)->sh_name)); | |
2077 | if (srel_name == NULL) | |
2078 | return NULL; | |
2079 | ||
2080 | dynobj = ia64_info->root.dynobj; | |
2081 | if (!dynobj) | |
2082 | ia64_info->root.dynobj = dynobj = abfd; | |
2083 | ||
3d4d4302 | 2084 | srel = bfd_get_linker_section (dynobj, srel_name); |
cbe79dfe TG |
2085 | if (srel == NULL && create) |
2086 | { | |
3d4d4302 AM |
2087 | srel = bfd_make_section_anyway_with_flags (dynobj, srel_name, |
2088 | (SEC_ALLOC | SEC_LOAD | |
2089 | | SEC_HAS_CONTENTS | |
2090 | | SEC_IN_MEMORY | |
2091 | | SEC_LINKER_CREATED | |
2092 | | SEC_READONLY)); | |
cbe79dfe TG |
2093 | if (srel == NULL |
2094 | || !bfd_set_section_alignment (dynobj, srel, | |
2095 | LOG_SECTION_ALIGN)) | |
2096 | return NULL; | |
2097 | } | |
2098 | ||
2099 | return srel; | |
2100 | } | |
2101 | ||
2102 | static bfd_boolean | |
2103 | count_dyn_reloc (bfd *abfd, struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2104 | asection *srel, int type, bfd_boolean reltext) | |
2105 | { | |
2106 | struct elfNN_ia64_dyn_reloc_entry *rent; | |
2107 | ||
2108 | for (rent = dyn_i->reloc_entries; rent; rent = rent->next) | |
2109 | if (rent->srel == srel && rent->type == type) | |
2110 | break; | |
2111 | ||
2112 | if (!rent) | |
2113 | { | |
2114 | rent = ((struct elfNN_ia64_dyn_reloc_entry *) | |
2115 | bfd_alloc (abfd, (bfd_size_type) sizeof (*rent))); | |
2116 | if (!rent) | |
2117 | return FALSE; | |
2118 | ||
2119 | rent->next = dyn_i->reloc_entries; | |
2120 | rent->srel = srel; | |
2121 | rent->type = type; | |
2122 | rent->count = 0; | |
2123 | dyn_i->reloc_entries = rent; | |
2124 | } | |
23ebcd30 | 2125 | rent->reltext = reltext; |
cbe79dfe TG |
2126 | rent->count++; |
2127 | ||
2128 | return TRUE; | |
2129 | } | |
2130 | ||
2131 | static bfd_boolean | |
2132 | elfNN_ia64_check_relocs (bfd *abfd, struct bfd_link_info *info, | |
2133 | asection *sec, | |
2134 | const Elf_Internal_Rela *relocs) | |
2135 | { | |
2136 | struct elfNN_ia64_link_hash_table *ia64_info; | |
2137 | const Elf_Internal_Rela *relend; | |
2138 | Elf_Internal_Shdr *symtab_hdr; | |
2139 | const Elf_Internal_Rela *rel; | |
2140 | asection *got, *fptr, *srel, *pltoff; | |
2141 | enum { | |
2142 | NEED_GOT = 1, | |
2143 | NEED_GOTX = 2, | |
2144 | NEED_FPTR = 4, | |
2145 | NEED_PLTOFF = 8, | |
2146 | NEED_MIN_PLT = 16, | |
2147 | NEED_FULL_PLT = 32, | |
2148 | NEED_DYNREL = 64, | |
2149 | NEED_LTOFF_FPTR = 128, | |
2150 | NEED_TPREL = 256, | |
2151 | NEED_DTPMOD = 512, | |
2152 | NEED_DTPREL = 1024 | |
2153 | }; | |
2154 | int need_entry; | |
2155 | struct elf_link_hash_entry *h; | |
2156 | unsigned long r_symndx; | |
2157 | bfd_boolean maybe_dynamic; | |
2158 | ||
2159 | if (info->relocatable) | |
2160 | return TRUE; | |
2161 | ||
2162 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
2163 | ia64_info = elfNN_ia64_hash_table (info); | |
2164 | if (ia64_info == NULL) | |
2165 | return FALSE; | |
2166 | ||
2167 | got = fptr = srel = pltoff = NULL; | |
2168 | ||
2169 | relend = relocs + sec->reloc_count; | |
2170 | ||
2171 | /* We scan relocations first to create dynamic relocation arrays. We | |
2172 | modified get_dyn_sym_info to allow fast insertion and support fast | |
2173 | lookup in the next loop. */ | |
2174 | for (rel = relocs; rel < relend; ++rel) | |
2175 | { | |
2176 | r_symndx = ELFNN_R_SYM (rel->r_info); | |
2177 | if (r_symndx >= symtab_hdr->sh_info) | |
2178 | { | |
2179 | long indx = r_symndx - symtab_hdr->sh_info; | |
2180 | h = elf_sym_hashes (abfd)[indx]; | |
2181 | while (h->root.type == bfd_link_hash_indirect | |
2182 | || h->root.type == bfd_link_hash_warning) | |
2183 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2184 | } | |
2185 | else | |
2186 | h = NULL; | |
2187 | ||
2188 | /* We can only get preliminary data on whether a symbol is | |
2189 | locally or externally defined, as not all of the input files | |
2190 | have yet been processed. Do something with what we know, as | |
2191 | this may help reduce memory usage and processing time later. */ | |
2192 | maybe_dynamic = (h && ((!info->executable | |
2193 | && (!SYMBOLIC_BIND (info, h) | |
2194 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) | |
2195 | || !h->def_regular | |
2196 | || h->root.type == bfd_link_hash_defweak)); | |
2197 | ||
2198 | need_entry = 0; | |
2199 | switch (ELFNN_R_TYPE (rel->r_info)) | |
2200 | { | |
2201 | case R_IA64_TPREL64MSB: | |
2202 | case R_IA64_TPREL64LSB: | |
2203 | if (info->shared || maybe_dynamic) | |
2204 | need_entry = NEED_DYNREL; | |
2205 | break; | |
2206 | ||
2207 | case R_IA64_LTOFF_TPREL22: | |
2208 | need_entry = NEED_TPREL; | |
2209 | if (info->shared) | |
2210 | info->flags |= DF_STATIC_TLS; | |
2211 | break; | |
2212 | ||
2213 | case R_IA64_DTPREL32MSB: | |
2214 | case R_IA64_DTPREL32LSB: | |
2215 | case R_IA64_DTPREL64MSB: | |
2216 | case R_IA64_DTPREL64LSB: | |
2217 | if (info->shared || maybe_dynamic) | |
2218 | need_entry = NEED_DYNREL; | |
2219 | break; | |
2220 | ||
2221 | case R_IA64_LTOFF_DTPREL22: | |
2222 | need_entry = NEED_DTPREL; | |
2223 | break; | |
2224 | ||
2225 | case R_IA64_DTPMOD64MSB: | |
2226 | case R_IA64_DTPMOD64LSB: | |
2227 | if (info->shared || maybe_dynamic) | |
2228 | need_entry = NEED_DYNREL; | |
2229 | break; | |
2230 | ||
2231 | case R_IA64_LTOFF_DTPMOD22: | |
2232 | need_entry = NEED_DTPMOD; | |
2233 | break; | |
2234 | ||
2235 | case R_IA64_LTOFF_FPTR22: | |
2236 | case R_IA64_LTOFF_FPTR64I: | |
2237 | case R_IA64_LTOFF_FPTR32MSB: | |
2238 | case R_IA64_LTOFF_FPTR32LSB: | |
2239 | case R_IA64_LTOFF_FPTR64MSB: | |
2240 | case R_IA64_LTOFF_FPTR64LSB: | |
2241 | need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR; | |
2242 | break; | |
2243 | ||
2244 | case R_IA64_FPTR64I: | |
2245 | case R_IA64_FPTR32MSB: | |
2246 | case R_IA64_FPTR32LSB: | |
2247 | case R_IA64_FPTR64MSB: | |
2248 | case R_IA64_FPTR64LSB: | |
2249 | if (info->shared || h) | |
2250 | need_entry = NEED_FPTR | NEED_DYNREL; | |
2251 | else | |
2252 | need_entry = NEED_FPTR; | |
2253 | break; | |
2254 | ||
2255 | case R_IA64_LTOFF22: | |
2256 | case R_IA64_LTOFF64I: | |
2257 | need_entry = NEED_GOT; | |
2258 | break; | |
2259 | ||
2260 | case R_IA64_LTOFF22X: | |
2261 | need_entry = NEED_GOTX; | |
2262 | break; | |
2263 | ||
2264 | case R_IA64_PLTOFF22: | |
2265 | case R_IA64_PLTOFF64I: | |
2266 | case R_IA64_PLTOFF64MSB: | |
2267 | case R_IA64_PLTOFF64LSB: | |
2268 | need_entry = NEED_PLTOFF; | |
2269 | if (h) | |
2270 | { | |
2271 | if (maybe_dynamic) | |
2272 | need_entry |= NEED_MIN_PLT; | |
2273 | } | |
2274 | else | |
2275 | { | |
2276 | (*info->callbacks->warning) | |
2277 | (info, _("@pltoff reloc against local symbol"), 0, | |
2278 | abfd, 0, (bfd_vma) 0); | |
2279 | } | |
2280 | break; | |
2281 | ||
2282 | case R_IA64_PCREL21B: | |
2283 | case R_IA64_PCREL60B: | |
2284 | /* Depending on where this symbol is defined, we may or may not | |
2285 | need a full plt entry. Only skip if we know we'll not need | |
2286 | the entry -- static or symbolic, and the symbol definition | |
2287 | has already been seen. */ | |
2288 | if (maybe_dynamic && rel->r_addend == 0) | |
2289 | need_entry = NEED_FULL_PLT; | |
2290 | break; | |
2291 | ||
2292 | case R_IA64_IMM14: | |
2293 | case R_IA64_IMM22: | |
2294 | case R_IA64_IMM64: | |
2295 | case R_IA64_DIR32MSB: | |
2296 | case R_IA64_DIR32LSB: | |
2297 | case R_IA64_DIR64MSB: | |
2298 | case R_IA64_DIR64LSB: | |
2299 | /* Shared objects will always need at least a REL relocation. */ | |
2300 | if (info->shared || maybe_dynamic) | |
2301 | need_entry = NEED_DYNREL; | |
2302 | break; | |
2303 | ||
2304 | case R_IA64_IPLTMSB: | |
2305 | case R_IA64_IPLTLSB: | |
2306 | /* Shared objects will always need at least a REL relocation. */ | |
2307 | if (info->shared || maybe_dynamic) | |
2308 | need_entry = NEED_DYNREL; | |
2309 | break; | |
2310 | ||
2311 | case R_IA64_PCREL22: | |
2312 | case R_IA64_PCREL64I: | |
2313 | case R_IA64_PCREL32MSB: | |
2314 | case R_IA64_PCREL32LSB: | |
2315 | case R_IA64_PCREL64MSB: | |
2316 | case R_IA64_PCREL64LSB: | |
2317 | if (maybe_dynamic) | |
2318 | need_entry = NEED_DYNREL; | |
2319 | break; | |
2320 | } | |
2321 | ||
2322 | if (!need_entry) | |
2323 | continue; | |
2324 | ||
2325 | if ((need_entry & NEED_FPTR) != 0 | |
2326 | && rel->r_addend) | |
2327 | { | |
2328 | (*info->callbacks->warning) | |
2329 | (info, _("non-zero addend in @fptr reloc"), 0, | |
2330 | abfd, 0, (bfd_vma) 0); | |
2331 | } | |
2332 | ||
2333 | if (get_dyn_sym_info (ia64_info, h, abfd, rel, TRUE) == NULL) | |
2334 | return FALSE; | |
2335 | } | |
2336 | ||
2337 | /* Now, we only do lookup without insertion, which is very fast | |
2338 | with the modified get_dyn_sym_info. */ | |
2339 | for (rel = relocs; rel < relend; ++rel) | |
2340 | { | |
2341 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
2342 | int dynrel_type = R_IA64_NONE; | |
2343 | ||
2344 | r_symndx = ELFNN_R_SYM (rel->r_info); | |
2345 | if (r_symndx >= symtab_hdr->sh_info) | |
2346 | { | |
2347 | /* We're dealing with a global symbol -- find its hash entry | |
2348 | and mark it as being referenced. */ | |
2349 | long indx = r_symndx - symtab_hdr->sh_info; | |
2350 | h = elf_sym_hashes (abfd)[indx]; | |
2351 | while (h->root.type == bfd_link_hash_indirect | |
2352 | || h->root.type == bfd_link_hash_warning) | |
2353 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2354 | ||
81fbe831 AM |
2355 | /* PR15323, ref flags aren't set for references in the same |
2356 | object. */ | |
2357 | h->root.non_ir_ref = 1; | |
cbe79dfe TG |
2358 | h->ref_regular = 1; |
2359 | } | |
2360 | else | |
2361 | h = NULL; | |
2362 | ||
2363 | /* We can only get preliminary data on whether a symbol is | |
2364 | locally or externally defined, as not all of the input files | |
2365 | have yet been processed. Do something with what we know, as | |
2366 | this may help reduce memory usage and processing time later. */ | |
2367 | maybe_dynamic = (h && ((!info->executable | |
2368 | && (!SYMBOLIC_BIND (info, h) | |
2369 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) | |
2370 | || !h->def_regular | |
2371 | || h->root.type == bfd_link_hash_defweak)); | |
2372 | ||
2373 | need_entry = 0; | |
2374 | switch (ELFNN_R_TYPE (rel->r_info)) | |
2375 | { | |
2376 | case R_IA64_TPREL64MSB: | |
2377 | case R_IA64_TPREL64LSB: | |
2378 | if (info->shared || maybe_dynamic) | |
2379 | need_entry = NEED_DYNREL; | |
2380 | dynrel_type = R_IA64_TPREL64LSB; | |
2381 | if (info->shared) | |
2382 | info->flags |= DF_STATIC_TLS; | |
2383 | break; | |
2384 | ||
2385 | case R_IA64_LTOFF_TPREL22: | |
2386 | need_entry = NEED_TPREL; | |
2387 | if (info->shared) | |
2388 | info->flags |= DF_STATIC_TLS; | |
2389 | break; | |
2390 | ||
2391 | case R_IA64_DTPREL32MSB: | |
2392 | case R_IA64_DTPREL32LSB: | |
2393 | case R_IA64_DTPREL64MSB: | |
2394 | case R_IA64_DTPREL64LSB: | |
2395 | if (info->shared || maybe_dynamic) | |
2396 | need_entry = NEED_DYNREL; | |
2397 | dynrel_type = R_IA64_DTPRELNNLSB; | |
2398 | break; | |
2399 | ||
2400 | case R_IA64_LTOFF_DTPREL22: | |
2401 | need_entry = NEED_DTPREL; | |
2402 | break; | |
2403 | ||
2404 | case R_IA64_DTPMOD64MSB: | |
2405 | case R_IA64_DTPMOD64LSB: | |
2406 | if (info->shared || maybe_dynamic) | |
2407 | need_entry = NEED_DYNREL; | |
2408 | dynrel_type = R_IA64_DTPMOD64LSB; | |
2409 | break; | |
2410 | ||
2411 | case R_IA64_LTOFF_DTPMOD22: | |
2412 | need_entry = NEED_DTPMOD; | |
2413 | break; | |
2414 | ||
2415 | case R_IA64_LTOFF_FPTR22: | |
2416 | case R_IA64_LTOFF_FPTR64I: | |
2417 | case R_IA64_LTOFF_FPTR32MSB: | |
2418 | case R_IA64_LTOFF_FPTR32LSB: | |
2419 | case R_IA64_LTOFF_FPTR64MSB: | |
2420 | case R_IA64_LTOFF_FPTR64LSB: | |
2421 | need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR; | |
2422 | break; | |
2423 | ||
2424 | case R_IA64_FPTR64I: | |
2425 | case R_IA64_FPTR32MSB: | |
2426 | case R_IA64_FPTR32LSB: | |
2427 | case R_IA64_FPTR64MSB: | |
2428 | case R_IA64_FPTR64LSB: | |
2429 | if (info->shared || h) | |
2430 | need_entry = NEED_FPTR | NEED_DYNREL; | |
2431 | else | |
2432 | need_entry = NEED_FPTR; | |
2433 | dynrel_type = R_IA64_FPTRNNLSB; | |
2434 | break; | |
2435 | ||
2436 | case R_IA64_LTOFF22: | |
2437 | case R_IA64_LTOFF64I: | |
2438 | need_entry = NEED_GOT; | |
2439 | break; | |
2440 | ||
2441 | case R_IA64_LTOFF22X: | |
2442 | need_entry = NEED_GOTX; | |
2443 | break; | |
2444 | ||
2445 | case R_IA64_PLTOFF22: | |
2446 | case R_IA64_PLTOFF64I: | |
2447 | case R_IA64_PLTOFF64MSB: | |
2448 | case R_IA64_PLTOFF64LSB: | |
2449 | need_entry = NEED_PLTOFF; | |
2450 | if (h) | |
2451 | { | |
2452 | if (maybe_dynamic) | |
2453 | need_entry |= NEED_MIN_PLT; | |
2454 | } | |
2455 | break; | |
2456 | ||
2457 | case R_IA64_PCREL21B: | |
2458 | case R_IA64_PCREL60B: | |
2459 | /* Depending on where this symbol is defined, we may or may not | |
2460 | need a full plt entry. Only skip if we know we'll not need | |
2461 | the entry -- static or symbolic, and the symbol definition | |
2462 | has already been seen. */ | |
2463 | if (maybe_dynamic && rel->r_addend == 0) | |
2464 | need_entry = NEED_FULL_PLT; | |
2465 | break; | |
2466 | ||
2467 | case R_IA64_IMM14: | |
2468 | case R_IA64_IMM22: | |
2469 | case R_IA64_IMM64: | |
2470 | case R_IA64_DIR32MSB: | |
2471 | case R_IA64_DIR32LSB: | |
2472 | case R_IA64_DIR64MSB: | |
2473 | case R_IA64_DIR64LSB: | |
2474 | /* Shared objects will always need at least a REL relocation. */ | |
2475 | if (info->shared || maybe_dynamic) | |
2476 | need_entry = NEED_DYNREL; | |
2477 | dynrel_type = R_IA64_DIRNNLSB; | |
2478 | break; | |
2479 | ||
2480 | case R_IA64_IPLTMSB: | |
2481 | case R_IA64_IPLTLSB: | |
2482 | /* Shared objects will always need at least a REL relocation. */ | |
2483 | if (info->shared || maybe_dynamic) | |
2484 | need_entry = NEED_DYNREL; | |
2485 | dynrel_type = R_IA64_IPLTLSB; | |
2486 | break; | |
2487 | ||
2488 | case R_IA64_PCREL22: | |
2489 | case R_IA64_PCREL64I: | |
2490 | case R_IA64_PCREL32MSB: | |
2491 | case R_IA64_PCREL32LSB: | |
2492 | case R_IA64_PCREL64MSB: | |
2493 | case R_IA64_PCREL64LSB: | |
2494 | if (maybe_dynamic) | |
2495 | need_entry = NEED_DYNREL; | |
2496 | dynrel_type = R_IA64_PCRELNNLSB; | |
2497 | break; | |
2498 | } | |
2499 | ||
2500 | if (!need_entry) | |
2501 | continue; | |
2502 | ||
2503 | dyn_i = get_dyn_sym_info (ia64_info, h, abfd, rel, FALSE); | |
2504 | ||
2505 | /* Record whether or not this is a local symbol. */ | |
2506 | dyn_i->h = h; | |
2507 | ||
2508 | /* Create what's needed. */ | |
2509 | if (need_entry & (NEED_GOT | NEED_GOTX | NEED_TPREL | |
2510 | | NEED_DTPMOD | NEED_DTPREL)) | |
2511 | { | |
2512 | if (!got) | |
2513 | { | |
2514 | got = get_got (abfd, info, ia64_info); | |
2515 | if (!got) | |
2516 | return FALSE; | |
2517 | } | |
2518 | if (need_entry & NEED_GOT) | |
2519 | dyn_i->want_got = 1; | |
2520 | if (need_entry & NEED_GOTX) | |
2521 | dyn_i->want_gotx = 1; | |
2522 | if (need_entry & NEED_TPREL) | |
2523 | dyn_i->want_tprel = 1; | |
2524 | if (need_entry & NEED_DTPMOD) | |
2525 | dyn_i->want_dtpmod = 1; | |
2526 | if (need_entry & NEED_DTPREL) | |
2527 | dyn_i->want_dtprel = 1; | |
2528 | } | |
2529 | if (need_entry & NEED_FPTR) | |
2530 | { | |
2531 | if (!fptr) | |
2532 | { | |
2533 | fptr = get_fptr (abfd, info, ia64_info); | |
2534 | if (!fptr) | |
2535 | return FALSE; | |
2536 | } | |
2537 | ||
2538 | /* FPTRs for shared libraries are allocated by the dynamic | |
2539 | linker. Make sure this local symbol will appear in the | |
2540 | dynamic symbol table. */ | |
2541 | if (!h && info->shared) | |
2542 | { | |
2543 | if (! (bfd_elf_link_record_local_dynamic_symbol | |
2544 | (info, abfd, (long) r_symndx))) | |
2545 | return FALSE; | |
2546 | } | |
2547 | ||
2548 | dyn_i->want_fptr = 1; | |
2549 | } | |
2550 | if (need_entry & NEED_LTOFF_FPTR) | |
2551 | dyn_i->want_ltoff_fptr = 1; | |
2552 | if (need_entry & (NEED_MIN_PLT | NEED_FULL_PLT)) | |
2553 | { | |
2554 | if (!ia64_info->root.dynobj) | |
2555 | ia64_info->root.dynobj = abfd; | |
2556 | h->needs_plt = 1; | |
2557 | dyn_i->want_plt = 1; | |
2558 | } | |
2559 | if (need_entry & NEED_FULL_PLT) | |
2560 | dyn_i->want_plt2 = 1; | |
2561 | if (need_entry & NEED_PLTOFF) | |
2562 | { | |
2563 | /* This is needed here, in case @pltoff is used in a non-shared | |
2564 | link. */ | |
2565 | if (!pltoff) | |
2566 | { | |
2567 | pltoff = get_pltoff (abfd, info, ia64_info); | |
2568 | if (!pltoff) | |
2569 | return FALSE; | |
2570 | } | |
2571 | ||
2572 | dyn_i->want_pltoff = 1; | |
2573 | } | |
2574 | if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC)) | |
2575 | { | |
2576 | if (!srel) | |
2577 | { | |
2578 | srel = get_reloc_section (abfd, ia64_info, sec, TRUE); | |
2579 | if (!srel) | |
2580 | return FALSE; | |
2581 | } | |
2582 | if (!count_dyn_reloc (abfd, dyn_i, srel, dynrel_type, | |
2583 | (sec->flags & SEC_READONLY) != 0)) | |
2584 | return FALSE; | |
2585 | } | |
2586 | } | |
2587 | ||
2588 | return TRUE; | |
2589 | } | |
2590 | ||
2591 | /* For cleanliness, and potentially faster dynamic loading, allocate | |
2592 | external GOT entries first. */ | |
2593 | ||
2594 | static bfd_boolean | |
2595 | allocate_global_data_got (struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2596 | void * data) | |
2597 | { | |
2598 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2599 | ||
2600 | if ((dyn_i->want_got || dyn_i->want_gotx) | |
2601 | && ! dyn_i->want_fptr | |
2602 | && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0)) | |
2603 | { | |
2604 | dyn_i->got_offset = x->ofs; | |
2605 | x->ofs += 8; | |
2606 | } | |
2607 | if (dyn_i->want_tprel) | |
2608 | { | |
2609 | dyn_i->tprel_offset = x->ofs; | |
2610 | x->ofs += 8; | |
2611 | } | |
2612 | if (dyn_i->want_dtpmod) | |
2613 | { | |
2614 | if (elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0)) | |
2615 | { | |
2616 | dyn_i->dtpmod_offset = x->ofs; | |
2617 | x->ofs += 8; | |
2618 | } | |
2619 | else | |
2620 | { | |
2621 | struct elfNN_ia64_link_hash_table *ia64_info; | |
2622 | ||
2623 | ia64_info = elfNN_ia64_hash_table (x->info); | |
2624 | if (ia64_info == NULL) | |
2625 | return FALSE; | |
2626 | ||
2627 | if (ia64_info->self_dtpmod_offset == (bfd_vma) -1) | |
2628 | { | |
2629 | ia64_info->self_dtpmod_offset = x->ofs; | |
2630 | x->ofs += 8; | |
2631 | } | |
2632 | dyn_i->dtpmod_offset = ia64_info->self_dtpmod_offset; | |
2633 | } | |
2634 | } | |
2635 | if (dyn_i->want_dtprel) | |
2636 | { | |
2637 | dyn_i->dtprel_offset = x->ofs; | |
2638 | x->ofs += 8; | |
2639 | } | |
2640 | return TRUE; | |
2641 | } | |
2642 | ||
2643 | /* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */ | |
2644 | ||
2645 | static bfd_boolean | |
2646 | allocate_global_fptr_got (struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2647 | void * data) | |
2648 | { | |
2649 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2650 | ||
2651 | if (dyn_i->want_got | |
2652 | && dyn_i->want_fptr | |
2653 | && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, R_IA64_FPTRNNLSB)) | |
2654 | { | |
2655 | dyn_i->got_offset = x->ofs; | |
2656 | x->ofs += 8; | |
2657 | } | |
2658 | return TRUE; | |
2659 | } | |
2660 | ||
2661 | /* Lastly, allocate all the GOT entries for local data. */ | |
2662 | ||
2663 | static bfd_boolean | |
2664 | allocate_local_got (struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2c3fc389 | 2665 | void * data) |
cbe79dfe TG |
2666 | { |
2667 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2668 | ||
2669 | if ((dyn_i->want_got || dyn_i->want_gotx) | |
2670 | && !elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0)) | |
2671 | { | |
2672 | dyn_i->got_offset = x->ofs; | |
2673 | x->ofs += 8; | |
2674 | } | |
2675 | return TRUE; | |
2676 | } | |
2677 | ||
2678 | /* Search for the index of a global symbol in it's defining object file. */ | |
2679 | ||
2680 | static long | |
2681 | global_sym_index (struct elf_link_hash_entry *h) | |
2682 | { | |
2683 | struct elf_link_hash_entry **p; | |
2684 | bfd *obj; | |
2685 | ||
2686 | BFD_ASSERT (h->root.type == bfd_link_hash_defined | |
2687 | || h->root.type == bfd_link_hash_defweak); | |
2688 | ||
2689 | obj = h->root.u.def.section->owner; | |
2690 | for (p = elf_sym_hashes (obj); *p != h; ++p) | |
2691 | continue; | |
2692 | ||
2693 | return p - elf_sym_hashes (obj) + elf_tdata (obj)->symtab_hdr.sh_info; | |
2694 | } | |
2695 | ||
2696 | /* Allocate function descriptors. We can do these for every function | |
2697 | in a main executable that is not exported. */ | |
2698 | ||
2699 | static bfd_boolean | |
2c3fc389 | 2700 | allocate_fptr (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data) |
cbe79dfe TG |
2701 | { |
2702 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2703 | ||
2704 | if (dyn_i->want_fptr) | |
2705 | { | |
2706 | struct elf_link_hash_entry *h = dyn_i->h; | |
2707 | ||
2708 | if (h) | |
2709 | while (h->root.type == bfd_link_hash_indirect | |
2710 | || h->root.type == bfd_link_hash_warning) | |
2711 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2712 | ||
2713 | if (!x->info->executable | |
2714 | && (!h | |
2715 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2716 | || (h->root.type != bfd_link_hash_undefweak | |
2717 | && h->root.type != bfd_link_hash_undefined))) | |
2718 | { | |
2719 | if (h && h->dynindx == -1) | |
2720 | { | |
2721 | BFD_ASSERT ((h->root.type == bfd_link_hash_defined) | |
2722 | || (h->root.type == bfd_link_hash_defweak)); | |
2723 | ||
2724 | if (!bfd_elf_link_record_local_dynamic_symbol | |
2725 | (x->info, h->root.u.def.section->owner, | |
2726 | global_sym_index (h))) | |
2727 | return FALSE; | |
2728 | } | |
2729 | ||
2730 | dyn_i->want_fptr = 0; | |
2731 | } | |
2732 | else if (h == NULL || h->dynindx == -1) | |
2733 | { | |
2734 | dyn_i->fptr_offset = x->ofs; | |
2735 | x->ofs += 16; | |
2736 | } | |
2737 | else | |
2738 | dyn_i->want_fptr = 0; | |
2739 | } | |
2740 | return TRUE; | |
2741 | } | |
2742 | ||
2743 | /* Allocate all the minimal PLT entries. */ | |
2744 | ||
2745 | static bfd_boolean | |
2746 | allocate_plt_entries (struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2c3fc389 | 2747 | void * data) |
cbe79dfe TG |
2748 | { |
2749 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2750 | ||
2751 | if (dyn_i->want_plt) | |
2752 | { | |
2753 | struct elf_link_hash_entry *h = dyn_i->h; | |
2754 | ||
2755 | if (h) | |
2756 | while (h->root.type == bfd_link_hash_indirect | |
2757 | || h->root.type == bfd_link_hash_warning) | |
2758 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2759 | ||
2760 | /* ??? Versioned symbols seem to lose NEEDS_PLT. */ | |
2761 | if (elfNN_ia64_dynamic_symbol_p (h, x->info, 0)) | |
2762 | { | |
2763 | bfd_size_type offset = x->ofs; | |
2764 | if (offset == 0) | |
2765 | offset = PLT_HEADER_SIZE; | |
2766 | dyn_i->plt_offset = offset; | |
2767 | x->ofs = offset + PLT_MIN_ENTRY_SIZE; | |
2768 | ||
2769 | dyn_i->want_pltoff = 1; | |
2770 | } | |
2771 | else | |
2772 | { | |
2773 | dyn_i->want_plt = 0; | |
2774 | dyn_i->want_plt2 = 0; | |
2775 | } | |
2776 | } | |
2777 | return TRUE; | |
2778 | } | |
2779 | ||
2780 | /* Allocate all the full PLT entries. */ | |
2781 | ||
2782 | static bfd_boolean | |
2783 | allocate_plt2_entries (struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2c3fc389 | 2784 | void * data) |
cbe79dfe TG |
2785 | { |
2786 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2787 | ||
2788 | if (dyn_i->want_plt2) | |
2789 | { | |
2790 | struct elf_link_hash_entry *h = dyn_i->h; | |
2791 | bfd_size_type ofs = x->ofs; | |
2792 | ||
2793 | dyn_i->plt2_offset = ofs; | |
2794 | x->ofs = ofs + PLT_FULL_ENTRY_SIZE; | |
2795 | ||
2796 | while (h->root.type == bfd_link_hash_indirect | |
2797 | || h->root.type == bfd_link_hash_warning) | |
2798 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2799 | dyn_i->h->plt.offset = ofs; | |
2800 | } | |
2801 | return TRUE; | |
2802 | } | |
2803 | ||
2804 | /* Allocate all the PLTOFF entries requested by relocations and | |
2805 | plt entries. We can't share space with allocated FPTR entries, | |
2806 | because the latter are not necessarily addressable by the GP. | |
2807 | ??? Relaxation might be able to determine that they are. */ | |
2808 | ||
2809 | static bfd_boolean | |
2810 | allocate_pltoff_entries (struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2c3fc389 | 2811 | void * data) |
cbe79dfe TG |
2812 | { |
2813 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2814 | ||
2815 | if (dyn_i->want_pltoff) | |
2816 | { | |
2817 | dyn_i->pltoff_offset = x->ofs; | |
2818 | x->ofs += 16; | |
2819 | } | |
2820 | return TRUE; | |
2821 | } | |
2822 | ||
2823 | /* Allocate dynamic relocations for those symbols that turned out | |
2824 | to be dynamic. */ | |
2825 | ||
2826 | static bfd_boolean | |
2827 | allocate_dynrel_entries (struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2c3fc389 | 2828 | void * data) |
cbe79dfe TG |
2829 | { |
2830 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2831 | struct elfNN_ia64_link_hash_table *ia64_info; | |
2832 | struct elfNN_ia64_dyn_reloc_entry *rent; | |
2833 | bfd_boolean dynamic_symbol, shared, resolved_zero; | |
2834 | ||
2835 | ia64_info = elfNN_ia64_hash_table (x->info); | |
2836 | if (ia64_info == NULL) | |
2837 | return FALSE; | |
2838 | ||
2839 | /* Note that this can't be used in relation to FPTR relocs below. */ | |
2840 | dynamic_symbol = elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0); | |
2841 | ||
2842 | shared = x->info->shared; | |
2843 | resolved_zero = (dyn_i->h | |
2844 | && ELF_ST_VISIBILITY (dyn_i->h->other) | |
2845 | && dyn_i->h->root.type == bfd_link_hash_undefweak); | |
2846 | ||
2847 | /* Take care of the GOT and PLT relocations. */ | |
2848 | ||
2849 | if ((!resolved_zero | |
2850 | && (dynamic_symbol || shared) | |
2851 | && (dyn_i->want_got || dyn_i->want_gotx)) | |
2852 | || (dyn_i->want_ltoff_fptr | |
2853 | && dyn_i->h | |
2854 | && dyn_i->h->dynindx != -1)) | |
2855 | { | |
2856 | if (!dyn_i->want_ltoff_fptr | |
2857 | || !x->info->pie | |
2858 | || dyn_i->h == NULL | |
2859 | || dyn_i->h->root.type != bfd_link_hash_undefweak) | |
2860 | ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela); | |
2861 | } | |
2862 | if ((dynamic_symbol || shared) && dyn_i->want_tprel) | |
2863 | ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela); | |
2864 | if (dynamic_symbol && dyn_i->want_dtpmod) | |
2865 | ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela); | |
2866 | if (dynamic_symbol && dyn_i->want_dtprel) | |
2867 | ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela); | |
2868 | ||
2869 | if (x->only_got) | |
2870 | return TRUE; | |
2871 | ||
2872 | if (ia64_info->rel_fptr_sec && dyn_i->want_fptr) | |
2873 | { | |
2874 | if (dyn_i->h == NULL || dyn_i->h->root.type != bfd_link_hash_undefweak) | |
2875 | ia64_info->rel_fptr_sec->size += sizeof (ElfNN_External_Rela); | |
2876 | } | |
2877 | ||
2878 | if (!resolved_zero && dyn_i->want_pltoff) | |
2879 | { | |
2880 | bfd_size_type t = 0; | |
2881 | ||
2882 | /* Dynamic symbols get one IPLT relocation. Local symbols in | |
2883 | shared libraries get two REL relocations. Local symbols in | |
2884 | main applications get nothing. */ | |
2885 | if (dynamic_symbol) | |
2886 | t = sizeof (ElfNN_External_Rela); | |
2887 | else if (shared) | |
2888 | t = 2 * sizeof (ElfNN_External_Rela); | |
2889 | ||
2890 | ia64_info->rel_pltoff_sec->size += t; | |
2891 | } | |
2892 | ||
2893 | /* Take care of the normal data relocations. */ | |
2894 | ||
2895 | for (rent = dyn_i->reloc_entries; rent; rent = rent->next) | |
2896 | { | |
2897 | int count = rent->count; | |
2898 | ||
2899 | switch (rent->type) | |
2900 | { | |
2901 | case R_IA64_FPTR32LSB: | |
2902 | case R_IA64_FPTR64LSB: | |
2903 | /* Allocate one iff !want_fptr and not PIE, which by this point | |
2904 | will be true only if we're actually allocating one statically | |
2905 | in the main executable. Position independent executables | |
2906 | need a relative reloc. */ | |
2907 | if (dyn_i->want_fptr && !x->info->pie) | |
2908 | continue; | |
2909 | break; | |
2910 | case R_IA64_PCREL32LSB: | |
2911 | case R_IA64_PCREL64LSB: | |
2912 | if (!dynamic_symbol) | |
2913 | continue; | |
2914 | break; | |
2915 | case R_IA64_DIR32LSB: | |
2916 | case R_IA64_DIR64LSB: | |
2917 | if (!dynamic_symbol && !shared) | |
2918 | continue; | |
2919 | break; | |
2920 | case R_IA64_IPLTLSB: | |
2921 | if (!dynamic_symbol && !shared) | |
2922 | continue; | |
2923 | /* Use two REL relocations for IPLT relocations | |
2924 | against local symbols. */ | |
2925 | if (!dynamic_symbol) | |
2926 | count *= 2; | |
2927 | break; | |
2928 | case R_IA64_DTPREL32LSB: | |
2929 | case R_IA64_TPREL64LSB: | |
2930 | case R_IA64_DTPREL64LSB: | |
2931 | case R_IA64_DTPMOD64LSB: | |
2932 | break; | |
2933 | default: | |
2934 | abort (); | |
2935 | } | |
2936 | if (rent->reltext) | |
2937 | ia64_info->reltext = 1; | |
2938 | rent->srel->size += sizeof (ElfNN_External_Rela) * count; | |
2939 | } | |
2940 | ||
2941 | return TRUE; | |
2942 | } | |
2943 | ||
2944 | static bfd_boolean | |
2945 | elfNN_ia64_adjust_dynamic_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2946 | struct elf_link_hash_entry *h) | |
2947 | { | |
2948 | /* ??? Undefined symbols with PLT entries should be re-defined | |
2949 | to be the PLT entry. */ | |
2950 | ||
2951 | /* If this is a weak symbol, and there is a real definition, the | |
2952 | processor independent code will have arranged for us to see the | |
2953 | real definition first, and we can just use the same value. */ | |
2954 | if (h->u.weakdef != NULL) | |
2955 | { | |
2956 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined | |
2957 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
2958 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
2959 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
2960 | return TRUE; | |
2961 | } | |
2962 | ||
2963 | /* If this is a reference to a symbol defined by a dynamic object which | |
2964 | is not a function, we might allocate the symbol in our .dynbss section | |
2965 | and allocate a COPY dynamic relocation. | |
2966 | ||
2967 | But IA-64 code is canonically PIC, so as a rule we can avoid this sort | |
2968 | of hackery. */ | |
2969 | ||
2970 | return TRUE; | |
2971 | } | |
2972 | ||
2973 | static bfd_boolean | |
2974 | elfNN_ia64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
2975 | struct bfd_link_info *info) | |
2976 | { | |
2977 | struct elfNN_ia64_allocate_data data; | |
2978 | struct elfNN_ia64_link_hash_table *ia64_info; | |
2979 | asection *sec; | |
2980 | bfd *dynobj; | |
2981 | bfd_boolean relplt = FALSE; | |
2982 | ||
2983 | dynobj = elf_hash_table(info)->dynobj; | |
2984 | ia64_info = elfNN_ia64_hash_table (info); | |
2985 | if (ia64_info == NULL) | |
2986 | return FALSE; | |
2987 | ia64_info->self_dtpmod_offset = (bfd_vma) -1; | |
2988 | BFD_ASSERT(dynobj != NULL); | |
2989 | data.info = info; | |
2990 | ||
2991 | /* Set the contents of the .interp section to the interpreter. */ | |
2992 | if (ia64_info->root.dynamic_sections_created | |
2993 | && info->executable) | |
2994 | { | |
3d4d4302 | 2995 | sec = bfd_get_linker_section (dynobj, ".interp"); |
cbe79dfe TG |
2996 | BFD_ASSERT (sec != NULL); |
2997 | sec->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER; | |
2998 | sec->size = strlen (ELF_DYNAMIC_INTERPRETER) + 1; | |
2999 | } | |
3000 | ||
3001 | /* Allocate the GOT entries. */ | |
3002 | ||
3003 | if (ia64_info->root.sgot) | |
3004 | { | |
3005 | data.ofs = 0; | |
3006 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data); | |
3007 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data); | |
3008 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data); | |
3009 | ia64_info->root.sgot->size = data.ofs; | |
3010 | } | |
3011 | ||
3012 | /* Allocate the FPTR entries. */ | |
3013 | ||
3014 | if (ia64_info->fptr_sec) | |
3015 | { | |
3016 | data.ofs = 0; | |
3017 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_fptr, &data); | |
3018 | ia64_info->fptr_sec->size = data.ofs; | |
3019 | } | |
3020 | ||
3021 | /* Now that we've seen all of the input files, we can decide which | |
3022 | symbols need plt entries. Allocate the minimal PLT entries first. | |
3023 | We do this even though dynamic_sections_created may be FALSE, because | |
3024 | this has the side-effect of clearing want_plt and want_plt2. */ | |
3025 | ||
3026 | data.ofs = 0; | |
3027 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt_entries, &data); | |
3028 | ||
3029 | ia64_info->minplt_entries = 0; | |
3030 | if (data.ofs) | |
3031 | { | |
3032 | ia64_info->minplt_entries | |
3033 | = (data.ofs - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE; | |
3034 | } | |
3035 | ||
3036 | /* Align the pointer for the plt2 entries. */ | |
3037 | data.ofs = (data.ofs + 31) & (bfd_vma) -32; | |
3038 | ||
3039 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt2_entries, &data); | |
3040 | if (data.ofs != 0 || ia64_info->root.dynamic_sections_created) | |
3041 | { | |
3042 | /* FIXME: we always reserve the memory for dynamic linker even if | |
3043 | there are no PLT entries since dynamic linker may assume the | |
3044 | reserved memory always exists. */ | |
3045 | ||
3046 | BFD_ASSERT (ia64_info->root.dynamic_sections_created); | |
3047 | ||
3048 | ia64_info->root.splt->size = data.ofs; | |
3049 | ||
3050 | /* If we've got a .plt, we need some extra memory for the dynamic | |
3051 | linker. We stuff these in .got.plt. */ | |
3d4d4302 | 3052 | sec = bfd_get_linker_section (dynobj, ".got.plt"); |
cbe79dfe TG |
3053 | sec->size = 8 * PLT_RESERVED_WORDS; |
3054 | } | |
3055 | ||
3056 | /* Allocate the PLTOFF entries. */ | |
3057 | ||
3058 | if (ia64_info->pltoff_sec) | |
3059 | { | |
3060 | data.ofs = 0; | |
3061 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_pltoff_entries, &data); | |
3062 | ia64_info->pltoff_sec->size = data.ofs; | |
3063 | } | |
3064 | ||
3065 | if (ia64_info->root.dynamic_sections_created) | |
3066 | { | |
3067 | /* Allocate space for the dynamic relocations that turned out to be | |
3068 | required. */ | |
3069 | ||
3070 | if (info->shared && ia64_info->self_dtpmod_offset != (bfd_vma) -1) | |
3071 | ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela); | |
3072 | data.only_got = FALSE; | |
3073 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, &data); | |
3074 | } | |
3075 | ||
3076 | /* We have now determined the sizes of the various dynamic sections. | |
3077 | Allocate memory for them. */ | |
3078 | for (sec = dynobj->sections; sec != NULL; sec = sec->next) | |
3079 | { | |
3080 | bfd_boolean strip; | |
3081 | ||
3082 | if (!(sec->flags & SEC_LINKER_CREATED)) | |
3083 | continue; | |
3084 | ||
3085 | /* If we don't need this section, strip it from the output file. | |
3086 | There were several sections primarily related to dynamic | |
3087 | linking that must be create before the linker maps input | |
3088 | sections to output sections. The linker does that before | |
3089 | bfd_elf_size_dynamic_sections is called, and it is that | |
3090 | function which decides whether anything needs to go into | |
3091 | these sections. */ | |
3092 | ||
3093 | strip = (sec->size == 0); | |
3094 | ||
3095 | if (sec == ia64_info->root.sgot) | |
3096 | strip = FALSE; | |
3097 | else if (sec == ia64_info->root.srelgot) | |
3098 | { | |
3099 | if (strip) | |
3100 | ia64_info->root.srelgot = NULL; | |
3101 | else | |
3102 | /* We use the reloc_count field as a counter if we need to | |
3103 | copy relocs into the output file. */ | |
3104 | sec->reloc_count = 0; | |
3105 | } | |
3106 | else if (sec == ia64_info->fptr_sec) | |
3107 | { | |
3108 | if (strip) | |
3109 | ia64_info->fptr_sec = NULL; | |
3110 | } | |
3111 | else if (sec == ia64_info->rel_fptr_sec) | |
3112 | { | |
3113 | if (strip) | |
3114 | ia64_info->rel_fptr_sec = NULL; | |
3115 | else | |
3116 | /* We use the reloc_count field as a counter if we need to | |
3117 | copy relocs into the output file. */ | |
3118 | sec->reloc_count = 0; | |
3119 | } | |
3120 | else if (sec == ia64_info->root.splt) | |
3121 | { | |
3122 | if (strip) | |
3123 | ia64_info->root.splt = NULL; | |
3124 | } | |
3125 | else if (sec == ia64_info->pltoff_sec) | |
3126 | { | |
3127 | if (strip) | |
3128 | ia64_info->pltoff_sec = NULL; | |
3129 | } | |
3130 | else if (sec == ia64_info->rel_pltoff_sec) | |
3131 | { | |
3132 | if (strip) | |
3133 | ia64_info->rel_pltoff_sec = NULL; | |
3134 | else | |
3135 | { | |
3136 | relplt = TRUE; | |
3137 | /* We use the reloc_count field as a counter if we need to | |
3138 | copy relocs into the output file. */ | |
3139 | sec->reloc_count = 0; | |
3140 | } | |
3141 | } | |
3142 | else | |
3143 | { | |
3144 | const char *name; | |
3145 | ||
3146 | /* It's OK to base decisions on the section name, because none | |
3147 | of the dynobj section names depend upon the input files. */ | |
3148 | name = bfd_get_section_name (dynobj, sec); | |
3149 | ||
3150 | if (strcmp (name, ".got.plt") == 0) | |
3151 | strip = FALSE; | |
3152 | else if (CONST_STRNEQ (name, ".rel")) | |
3153 | { | |
3154 | if (!strip) | |
3155 | { | |
3156 | /* We use the reloc_count field as a counter if we need to | |
3157 | copy relocs into the output file. */ | |
3158 | sec->reloc_count = 0; | |
3159 | } | |
3160 | } | |
3161 | else | |
3162 | continue; | |
3163 | } | |
3164 | ||
3165 | if (strip) | |
3166 | sec->flags |= SEC_EXCLUDE; | |
3167 | else | |
3168 | { | |
3169 | /* Allocate memory for the section contents. */ | |
3170 | sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->size); | |
3171 | if (sec->contents == NULL && sec->size != 0) | |
3172 | return FALSE; | |
3173 | } | |
3174 | } | |
3175 | ||
3176 | if (elf_hash_table (info)->dynamic_sections_created) | |
3177 | { | |
3178 | /* Add some entries to the .dynamic section. We fill in the values | |
3179 | later (in finish_dynamic_sections) but we must add the entries now | |
3180 | so that we get the correct size for the .dynamic section. */ | |
3181 | ||
3182 | if (info->executable) | |
3183 | { | |
3184 | /* The DT_DEBUG entry is filled in by the dynamic linker and used | |
3185 | by the debugger. */ | |
3186 | #define add_dynamic_entry(TAG, VAL) \ | |
3187 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
3188 | ||
3189 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
3190 | return FALSE; | |
3191 | } | |
3192 | ||
3193 | if (!add_dynamic_entry (DT_IA_64_PLT_RESERVE, 0)) | |
3194 | return FALSE; | |
3195 | if (!add_dynamic_entry (DT_PLTGOT, 0)) | |
3196 | return FALSE; | |
3197 | ||
3198 | if (relplt) | |
3199 | { | |
3200 | if (!add_dynamic_entry (DT_PLTRELSZ, 0) | |
3201 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
3202 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
3203 | return FALSE; | |
3204 | } | |
3205 | ||
3206 | if (!add_dynamic_entry (DT_RELA, 0) | |
3207 | || !add_dynamic_entry (DT_RELASZ, 0) | |
3208 | || !add_dynamic_entry (DT_RELAENT, sizeof (ElfNN_External_Rela))) | |
3209 | return FALSE; | |
3210 | ||
3211 | if (ia64_info->reltext) | |
3212 | { | |
3213 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
3214 | return FALSE; | |
3215 | info->flags |= DF_TEXTREL; | |
3216 | } | |
3217 | } | |
3218 | ||
3219 | /* ??? Perhaps force __gp local. */ | |
3220 | ||
3221 | return TRUE; | |
3222 | } | |
3223 | ||
3224 | static void | |
3225 | elfNN_ia64_install_dyn_reloc (bfd *abfd, struct bfd_link_info *info, | |
3226 | asection *sec, asection *srel, | |
3227 | bfd_vma offset, unsigned int type, | |
3228 | long dynindx, bfd_vma addend) | |
3229 | { | |
3230 | Elf_Internal_Rela outrel; | |
3231 | bfd_byte *loc; | |
3232 | ||
3233 | BFD_ASSERT (dynindx != -1); | |
3234 | outrel.r_info = ELFNN_R_INFO (dynindx, type); | |
3235 | outrel.r_addend = addend; | |
3236 | outrel.r_offset = _bfd_elf_section_offset (abfd, info, sec, offset); | |
3237 | if (outrel.r_offset >= (bfd_vma) -2) | |
3238 | { | |
3239 | /* Run for the hills. We shouldn't be outputting a relocation | |
3240 | for this. So do what everyone else does and output a no-op. */ | |
3241 | outrel.r_info = ELFNN_R_INFO (0, R_IA64_NONE); | |
3242 | outrel.r_addend = 0; | |
3243 | outrel.r_offset = 0; | |
3244 | } | |
3245 | else | |
3246 | outrel.r_offset += sec->output_section->vma + sec->output_offset; | |
3247 | ||
3248 | loc = srel->contents; | |
3249 | loc += srel->reloc_count++ * sizeof (ElfNN_External_Rela); | |
3250 | bfd_elfNN_swap_reloca_out (abfd, &outrel, loc); | |
3251 | BFD_ASSERT (sizeof (ElfNN_External_Rela) * srel->reloc_count <= srel->size); | |
3252 | } | |
3253 | ||
3254 | /* Store an entry for target address TARGET_ADDR in the linkage table | |
3255 | and return the gp-relative address of the linkage table entry. */ | |
3256 | ||
3257 | static bfd_vma | |
3258 | set_got_entry (bfd *abfd, struct bfd_link_info *info, | |
3259 | struct elfNN_ia64_dyn_sym_info *dyn_i, | |
3260 | long dynindx, bfd_vma addend, bfd_vma value, | |
3261 | unsigned int dyn_r_type) | |
3262 | { | |
3263 | struct elfNN_ia64_link_hash_table *ia64_info; | |
3264 | asection *got_sec; | |
3265 | bfd_boolean done; | |
3266 | bfd_vma got_offset; | |
3267 | ||
3268 | ia64_info = elfNN_ia64_hash_table (info); | |
3269 | if (ia64_info == NULL) | |
3270 | return 0; | |
3271 | ||
3272 | got_sec = ia64_info->root.sgot; | |
3273 | ||
3274 | switch (dyn_r_type) | |
3275 | { | |
3276 | case R_IA64_TPREL64LSB: | |
3277 | done = dyn_i->tprel_done; | |
3278 | dyn_i->tprel_done = TRUE; | |
3279 | got_offset = dyn_i->tprel_offset; | |
3280 | break; | |
3281 | case R_IA64_DTPMOD64LSB: | |
3282 | if (dyn_i->dtpmod_offset != ia64_info->self_dtpmod_offset) | |
3283 | { | |
3284 | done = dyn_i->dtpmod_done; | |
3285 | dyn_i->dtpmod_done = TRUE; | |
3286 | } | |
3287 | else | |
3288 | { | |
3289 | done = ia64_info->self_dtpmod_done; | |
3290 | ia64_info->self_dtpmod_done = TRUE; | |
3291 | dynindx = 0; | |
3292 | } | |
3293 | got_offset = dyn_i->dtpmod_offset; | |
3294 | break; | |
3295 | case R_IA64_DTPREL32LSB: | |
3296 | case R_IA64_DTPREL64LSB: | |
3297 | done = dyn_i->dtprel_done; | |
3298 | dyn_i->dtprel_done = TRUE; | |
3299 | got_offset = dyn_i->dtprel_offset; | |
3300 | break; | |
3301 | default: | |
3302 | done = dyn_i->got_done; | |
3303 | dyn_i->got_done = TRUE; | |
3304 | got_offset = dyn_i->got_offset; | |
3305 | break; | |
3306 | } | |
3307 | ||
3308 | BFD_ASSERT ((got_offset & 7) == 0); | |
3309 | ||
3310 | if (! done) | |
3311 | { | |
3312 | /* Store the target address in the linkage table entry. */ | |
3313 | bfd_put_64 (abfd, value, got_sec->contents + got_offset); | |
3314 | ||
3315 | /* Install a dynamic relocation if needed. */ | |
3316 | if (((info->shared | |
3317 | && (!dyn_i->h | |
3318 | || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT | |
3319 | || dyn_i->h->root.type != bfd_link_hash_undefweak) | |
3320 | && dyn_r_type != R_IA64_DTPREL32LSB | |
3321 | && dyn_r_type != R_IA64_DTPREL64LSB) | |
3322 | || elfNN_ia64_dynamic_symbol_p (dyn_i->h, info, dyn_r_type) | |
3323 | || (dynindx != -1 | |
3324 | && (dyn_r_type == R_IA64_FPTR32LSB | |
3325 | || dyn_r_type == R_IA64_FPTR64LSB))) | |
3326 | && (!dyn_i->want_ltoff_fptr | |
3327 | || !info->pie | |
3328 | || !dyn_i->h | |
3329 | || dyn_i->h->root.type != bfd_link_hash_undefweak)) | |
3330 | { | |
3331 | if (dynindx == -1 | |
3332 | && dyn_r_type != R_IA64_TPREL64LSB | |
3333 | && dyn_r_type != R_IA64_DTPMOD64LSB | |
3334 | && dyn_r_type != R_IA64_DTPREL32LSB | |
3335 | && dyn_r_type != R_IA64_DTPREL64LSB) | |
3336 | { | |
3337 | dyn_r_type = R_IA64_RELNNLSB; | |
3338 | dynindx = 0; | |
3339 | addend = value; | |
3340 | } | |
3341 | ||
3342 | if (bfd_big_endian (abfd)) | |
3343 | { | |
3344 | switch (dyn_r_type) | |
3345 | { | |
3346 | case R_IA64_REL32LSB: | |
3347 | dyn_r_type = R_IA64_REL32MSB; | |
3348 | break; | |
3349 | case R_IA64_DIR32LSB: | |
3350 | dyn_r_type = R_IA64_DIR32MSB; | |
3351 | break; | |
3352 | case R_IA64_FPTR32LSB: | |
3353 | dyn_r_type = R_IA64_FPTR32MSB; | |
3354 | break; | |
3355 | case R_IA64_DTPREL32LSB: | |
3356 | dyn_r_type = R_IA64_DTPREL32MSB; | |
3357 | break; | |
3358 | case R_IA64_REL64LSB: | |
3359 | dyn_r_type = R_IA64_REL64MSB; | |
3360 | break; | |
3361 | case R_IA64_DIR64LSB: | |
3362 | dyn_r_type = R_IA64_DIR64MSB; | |
3363 | break; | |
3364 | case R_IA64_FPTR64LSB: | |
3365 | dyn_r_type = R_IA64_FPTR64MSB; | |
3366 | break; | |
3367 | case R_IA64_TPREL64LSB: | |
3368 | dyn_r_type = R_IA64_TPREL64MSB; | |
3369 | break; | |
3370 | case R_IA64_DTPMOD64LSB: | |
3371 | dyn_r_type = R_IA64_DTPMOD64MSB; | |
3372 | break; | |
3373 | case R_IA64_DTPREL64LSB: | |
3374 | dyn_r_type = R_IA64_DTPREL64MSB; | |
3375 | break; | |
3376 | default: | |
3377 | BFD_ASSERT (FALSE); | |
3378 | break; | |
3379 | } | |
3380 | } | |
3381 | ||
3382 | elfNN_ia64_install_dyn_reloc (abfd, NULL, got_sec, | |
3383 | ia64_info->root.srelgot, | |
3384 | got_offset, dyn_r_type, | |
3385 | dynindx, addend); | |
3386 | } | |
3387 | } | |
3388 | ||
3389 | /* Return the address of the linkage table entry. */ | |
3390 | value = (got_sec->output_section->vma | |
3391 | + got_sec->output_offset | |
3392 | + got_offset); | |
3393 | ||
3394 | return value; | |
3395 | } | |
3396 | ||
3397 | /* Fill in a function descriptor consisting of the function's code | |
3398 | address and its global pointer. Return the descriptor's address. */ | |
3399 | ||
3400 | static bfd_vma | |
3401 | set_fptr_entry (bfd *abfd, struct bfd_link_info *info, | |
3402 | struct elfNN_ia64_dyn_sym_info *dyn_i, | |
3403 | bfd_vma value) | |
3404 | { | |
3405 | struct elfNN_ia64_link_hash_table *ia64_info; | |
3406 | asection *fptr_sec; | |
3407 | ||
3408 | ia64_info = elfNN_ia64_hash_table (info); | |
3409 | if (ia64_info == NULL) | |
3410 | return 0; | |
3411 | ||
3412 | fptr_sec = ia64_info->fptr_sec; | |
3413 | ||
3414 | if (!dyn_i->fptr_done) | |
3415 | { | |
3416 | dyn_i->fptr_done = 1; | |
3417 | ||
3418 | /* Fill in the function descriptor. */ | |
3419 | bfd_put_64 (abfd, value, fptr_sec->contents + dyn_i->fptr_offset); | |
3420 | bfd_put_64 (abfd, _bfd_get_gp_value (abfd), | |
3421 | fptr_sec->contents + dyn_i->fptr_offset + 8); | |
3422 | if (ia64_info->rel_fptr_sec) | |
3423 | { | |
3424 | Elf_Internal_Rela outrel; | |
3425 | bfd_byte *loc; | |
3426 | ||
3427 | if (bfd_little_endian (abfd)) | |
3428 | outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTLSB); | |
3429 | else | |
3430 | outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTMSB); | |
3431 | outrel.r_addend = value; | |
3432 | outrel.r_offset = (fptr_sec->output_section->vma | |
3433 | + fptr_sec->output_offset | |
3434 | + dyn_i->fptr_offset); | |
3435 | loc = ia64_info->rel_fptr_sec->contents; | |
3436 | loc += ia64_info->rel_fptr_sec->reloc_count++ | |
3437 | * sizeof (ElfNN_External_Rela); | |
3438 | bfd_elfNN_swap_reloca_out (abfd, &outrel, loc); | |
3439 | } | |
3440 | } | |
3441 | ||
3442 | /* Return the descriptor's address. */ | |
3443 | value = (fptr_sec->output_section->vma | |
3444 | + fptr_sec->output_offset | |
3445 | + dyn_i->fptr_offset); | |
3446 | ||
3447 | return value; | |
3448 | } | |
3449 | ||
3450 | /* Fill in a PLTOFF entry consisting of the function's code address | |
3451 | and its global pointer. Return the descriptor's address. */ | |
3452 | ||
3453 | static bfd_vma | |
3454 | set_pltoff_entry (bfd *abfd, struct bfd_link_info *info, | |
3455 | struct elfNN_ia64_dyn_sym_info *dyn_i, | |
3456 | bfd_vma value, bfd_boolean is_plt) | |
3457 | { | |
3458 | struct elfNN_ia64_link_hash_table *ia64_info; | |
3459 | asection *pltoff_sec; | |
3460 | ||
3461 | ia64_info = elfNN_ia64_hash_table (info); | |
3462 | if (ia64_info == NULL) | |
3463 | return 0; | |
3464 | ||
3465 | pltoff_sec = ia64_info->pltoff_sec; | |
3466 | ||
3467 | /* Don't do anything if this symbol uses a real PLT entry. In | |
3468 | that case, we'll fill this in during finish_dynamic_symbol. */ | |
3469 | if ((! dyn_i->want_plt || is_plt) | |
3470 | && !dyn_i->pltoff_done) | |
3471 | { | |
3472 | bfd_vma gp = _bfd_get_gp_value (abfd); | |
3473 | ||
3474 | /* Fill in the function descriptor. */ | |
3475 | bfd_put_64 (abfd, value, pltoff_sec->contents + dyn_i->pltoff_offset); | |
3476 | bfd_put_64 (abfd, gp, pltoff_sec->contents + dyn_i->pltoff_offset + 8); | |
3477 | ||
3478 | /* Install dynamic relocations if needed. */ | |
3479 | if (!is_plt | |
3480 | && info->shared | |
3481 | && (!dyn_i->h | |
3482 | || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT | |
3483 | || dyn_i->h->root.type != bfd_link_hash_undefweak)) | |
3484 | { | |
3485 | unsigned int dyn_r_type; | |
3486 | ||
3487 | if (bfd_big_endian (abfd)) | |
3488 | dyn_r_type = R_IA64_RELNNMSB; | |
3489 | else | |
3490 | dyn_r_type = R_IA64_RELNNLSB; | |
3491 | ||
3492 | elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec, | |
3493 | ia64_info->rel_pltoff_sec, | |
3494 | dyn_i->pltoff_offset, | |
3495 | dyn_r_type, 0, value); | |
3496 | elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec, | |
3497 | ia64_info->rel_pltoff_sec, | |
3498 | dyn_i->pltoff_offset + ARCH_SIZE / 8, | |
3499 | dyn_r_type, 0, gp); | |
3500 | } | |
3501 | ||
3502 | dyn_i->pltoff_done = 1; | |
3503 | } | |
3504 | ||
3505 | /* Return the descriptor's address. */ | |
3506 | value = (pltoff_sec->output_section->vma | |
3507 | + pltoff_sec->output_offset | |
3508 | + dyn_i->pltoff_offset); | |
3509 | ||
3510 | return value; | |
3511 | } | |
3512 | ||
3513 | /* Return the base VMA address which should be subtracted from real addresses | |
3514 | when resolving @tprel() relocation. | |
3515 | Main program TLS (whose template starts at PT_TLS p_vaddr) | |
3516 | is assigned offset round(2 * size of pointer, PT_TLS p_align). */ | |
3517 | ||
3518 | static bfd_vma | |
3519 | elfNN_ia64_tprel_base (struct bfd_link_info *info) | |
3520 | { | |
3521 | asection *tls_sec = elf_hash_table (info)->tls_sec; | |
3522 | return tls_sec->vma - align_power ((bfd_vma) ARCH_SIZE / 4, | |
3523 | tls_sec->alignment_power); | |
3524 | } | |
3525 | ||
3526 | /* Return the base VMA address which should be subtracted from real addresses | |
3527 | when resolving @dtprel() relocation. | |
3528 | This is PT_TLS segment p_vaddr. */ | |
3529 | ||
3530 | static bfd_vma | |
3531 | elfNN_ia64_dtprel_base (struct bfd_link_info *info) | |
3532 | { | |
3533 | return elf_hash_table (info)->tls_sec->vma; | |
3534 | } | |
3535 | ||
3536 | /* Called through qsort to sort the .IA_64.unwind section during a | |
3537 | non-relocatable link. Set elfNN_ia64_unwind_entry_compare_bfd | |
3538 | to the output bfd so we can do proper endianness frobbing. */ | |
3539 | ||
3540 | static bfd *elfNN_ia64_unwind_entry_compare_bfd; | |
3541 | ||
3542 | static int | |
2c3fc389 | 3543 | elfNN_ia64_unwind_entry_compare (const void * a, const void * b) |
cbe79dfe TG |
3544 | { |
3545 | bfd_vma av, bv; | |
3546 | ||
3547 | av = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, a); | |
3548 | bv = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, b); | |
3549 | ||
3550 | return (av < bv ? -1 : av > bv ? 1 : 0); | |
3551 | } | |
3552 | ||
3553 | /* Make sure we've got ourselves a nice fat __gp value. */ | |
3554 | static bfd_boolean | |
3555 | elfNN_ia64_choose_gp (bfd *abfd, struct bfd_link_info *info, bfd_boolean final) | |
3556 | { | |
3557 | bfd_vma min_vma = (bfd_vma) -1, max_vma = 0; | |
3558 | bfd_vma min_short_vma = min_vma, max_short_vma = 0; | |
3559 | struct elf_link_hash_entry *gp; | |
3560 | bfd_vma gp_val; | |
3561 | asection *os; | |
3562 | struct elfNN_ia64_link_hash_table *ia64_info; | |
3563 | ||
3564 | ia64_info = elfNN_ia64_hash_table (info); | |
3565 | if (ia64_info == NULL) | |
3566 | return FALSE; | |
3567 | ||
3568 | /* Find the min and max vma of all sections marked short. Also collect | |
3569 | min and max vma of any type, for use in selecting a nice gp. */ | |
3570 | for (os = abfd->sections; os ; os = os->next) | |
3571 | { | |
3572 | bfd_vma lo, hi; | |
3573 | ||
3574 | if ((os->flags & SEC_ALLOC) == 0) | |
3575 | continue; | |
3576 | ||
3577 | lo = os->vma; | |
3578 | /* When this function is called from elfNN_ia64_final_link | |
3579 | the correct value to use is os->size. When called from | |
3580 | elfNN_ia64_relax_section we are in the middle of section | |
3581 | sizing; some sections will already have os->size set, others | |
3582 | will have os->size zero and os->rawsize the previous size. */ | |
3583 | hi = os->vma + (!final && os->rawsize ? os->rawsize : os->size); | |
3584 | if (hi < lo) | |
3585 | hi = (bfd_vma) -1; | |
3586 | ||
3587 | if (min_vma > lo) | |
3588 | min_vma = lo; | |
3589 | if (max_vma < hi) | |
3590 | max_vma = hi; | |
3591 | if (os->flags & SEC_SMALL_DATA) | |
3592 | { | |
3593 | if (min_short_vma > lo) | |
3594 | min_short_vma = lo; | |
3595 | if (max_short_vma < hi) | |
3596 | max_short_vma = hi; | |
3597 | } | |
3598 | } | |
3599 | ||
3600 | if (ia64_info->min_short_sec) | |
3601 | { | |
d17fe7b7 | 3602 | if (min_short_vma |
cbe79dfe TG |
3603 | > (ia64_info->min_short_sec->vma |
3604 | + ia64_info->min_short_offset)) | |
3605 | min_short_vma = (ia64_info->min_short_sec->vma | |
3606 | + ia64_info->min_short_offset); | |
3607 | if (max_short_vma | |
3608 | < (ia64_info->max_short_sec->vma | |
3609 | + ia64_info->max_short_offset)) | |
3610 | max_short_vma = (ia64_info->max_short_sec->vma | |
3611 | + ia64_info->max_short_offset); | |
3612 | } | |
3613 | ||
3614 | /* See if the user wants to force a value. */ | |
3615 | gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE, | |
3616 | FALSE, FALSE); | |
3617 | ||
3618 | if (gp | |
3619 | && (gp->root.type == bfd_link_hash_defined | |
3620 | || gp->root.type == bfd_link_hash_defweak)) | |
3621 | { | |
3622 | asection *gp_sec = gp->root.u.def.section; | |
3623 | gp_val = (gp->root.u.def.value | |
3624 | + gp_sec->output_section->vma | |
3625 | + gp_sec->output_offset); | |
3626 | } | |
3627 | else | |
3628 | { | |
3629 | /* Pick a sensible value. */ | |
3630 | ||
3631 | if (ia64_info->min_short_sec) | |
3632 | { | |
3633 | bfd_vma short_range = max_short_vma - min_short_vma; | |
3634 | ||
3635 | /* If min_short_sec is set, pick one in the middle bewteen | |
3636 | min_short_vma and max_short_vma. */ | |
3637 | if (short_range >= 0x400000) | |
3638 | goto overflow; | |
3639 | gp_val = min_short_vma + short_range / 2; | |
3640 | } | |
3641 | else | |
3642 | { | |
3643 | asection *got_sec = ia64_info->root.sgot; | |
3644 | ||
3645 | /* Start with just the address of the .got. */ | |
3646 | if (got_sec) | |
3647 | gp_val = got_sec->output_section->vma; | |
3648 | else if (max_short_vma != 0) | |
3649 | gp_val = min_short_vma; | |
3650 | else if (max_vma - min_vma < 0x200000) | |
3651 | gp_val = min_vma; | |
3652 | else | |
3653 | gp_val = max_vma - 0x200000 + 8; | |
3654 | } | |
3655 | ||
3656 | /* If it is possible to address the entire image, but we | |
3657 | don't with the choice above, adjust. */ | |
3658 | if (max_vma - min_vma < 0x400000 | |
3659 | && (max_vma - gp_val >= 0x200000 | |
3660 | || gp_val - min_vma > 0x200000)) | |
3661 | gp_val = min_vma + 0x200000; | |
3662 | else if (max_short_vma != 0) | |
3663 | { | |
3664 | /* If we don't cover all the short data, adjust. */ | |
3665 | if (max_short_vma - gp_val >= 0x200000) | |
3666 | gp_val = min_short_vma + 0x200000; | |
3667 | ||
3668 | /* If we're addressing stuff past the end, adjust back. */ | |
3669 | if (gp_val > max_vma) | |
3670 | gp_val = max_vma - 0x200000 + 8; | |
3671 | } | |
3672 | } | |
3673 | ||
3674 | /* Validate whether all SHF_IA_64_SHORT sections are within | |
3675 | range of the chosen GP. */ | |
3676 | ||
3677 | if (max_short_vma != 0) | |
3678 | { | |
3679 | if (max_short_vma - min_short_vma >= 0x400000) | |
3680 | { | |
3681 | overflow: | |
3682 | (*_bfd_error_handler) | |
3683 | (_("%s: short data segment overflowed (0x%lx >= 0x400000)"), | |
3684 | bfd_get_filename (abfd), | |
3685 | (unsigned long) (max_short_vma - min_short_vma)); | |
3686 | return FALSE; | |
3687 | } | |
3688 | else if ((gp_val > min_short_vma | |
3689 | && gp_val - min_short_vma > 0x200000) | |
3690 | || (gp_val < max_short_vma | |
3691 | && max_short_vma - gp_val >= 0x200000)) | |
3692 | { | |
3693 | (*_bfd_error_handler) | |
3694 | (_("%s: __gp does not cover short data segment"), | |
3695 | bfd_get_filename (abfd)); | |
3696 | return FALSE; | |
3697 | } | |
3698 | } | |
3699 | ||
3700 | _bfd_set_gp_value (abfd, gp_val); | |
3701 | ||
3702 | return TRUE; | |
3703 | } | |
3704 | ||
3705 | static bfd_boolean | |
3706 | elfNN_ia64_final_link (bfd *abfd, struct bfd_link_info *info) | |
3707 | { | |
3708 | struct elfNN_ia64_link_hash_table *ia64_info; | |
3709 | asection *unwind_output_sec; | |
3710 | ||
3711 | ia64_info = elfNN_ia64_hash_table (info); | |
3712 | if (ia64_info == NULL) | |
3713 | return FALSE; | |
3714 | ||
3715 | /* Make sure we've got ourselves a nice fat __gp value. */ | |
3716 | if (!info->relocatable) | |
3717 | { | |
3718 | bfd_vma gp_val; | |
3719 | struct elf_link_hash_entry *gp; | |
3720 | ||
3721 | /* We assume after gp is set, section size will only decrease. We | |
3722 | need to adjust gp for it. */ | |
3723 | _bfd_set_gp_value (abfd, 0); | |
3724 | if (! elfNN_ia64_choose_gp (abfd, info, TRUE)) | |
3725 | return FALSE; | |
3726 | gp_val = _bfd_get_gp_value (abfd); | |
3727 | ||
3728 | gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE, | |
3729 | FALSE, FALSE); | |
3730 | if (gp) | |
3731 | { | |
3732 | gp->root.type = bfd_link_hash_defined; | |
3733 | gp->root.u.def.value = gp_val; | |
3734 | gp->root.u.def.section = bfd_abs_section_ptr; | |
3735 | } | |
3736 | } | |
3737 | ||
3738 | /* If we're producing a final executable, we need to sort the contents | |
3739 | of the .IA_64.unwind section. Force this section to be relocated | |
3740 | into memory rather than written immediately to the output file. */ | |
3741 | unwind_output_sec = NULL; | |
3742 | if (!info->relocatable) | |
3743 | { | |
3744 | asection *s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind); | |
3745 | if (s) | |
3746 | { | |
3747 | unwind_output_sec = s->output_section; | |
3748 | unwind_output_sec->contents | |
3749 | = bfd_malloc (unwind_output_sec->size); | |
3750 | if (unwind_output_sec->contents == NULL) | |
3751 | return FALSE; | |
3752 | } | |
3753 | } | |
3754 | ||
3755 | /* Invoke the regular ELF backend linker to do all the work. */ | |
3756 | if (!bfd_elf_final_link (abfd, info)) | |
3757 | return FALSE; | |
3758 | ||
3759 | if (unwind_output_sec) | |
3760 | { | |
3761 | elfNN_ia64_unwind_entry_compare_bfd = abfd; | |
3762 | qsort (unwind_output_sec->contents, | |
3763 | (size_t) (unwind_output_sec->size / 24), | |
3764 | 24, | |
3765 | elfNN_ia64_unwind_entry_compare); | |
3766 | ||
3767 | if (! bfd_set_section_contents (abfd, unwind_output_sec, | |
3768 | unwind_output_sec->contents, (bfd_vma) 0, | |
3769 | unwind_output_sec->size)) | |
3770 | return FALSE; | |
3771 | } | |
3772 | ||
3773 | return TRUE; | |
3774 | } | |
3775 | ||
3776 | static bfd_boolean | |
3777 | elfNN_ia64_relocate_section (bfd *output_bfd, | |
3778 | struct bfd_link_info *info, | |
3779 | bfd *input_bfd, | |
3780 | asection *input_section, | |
3781 | bfd_byte *contents, | |
3782 | Elf_Internal_Rela *relocs, | |
3783 | Elf_Internal_Sym *local_syms, | |
3784 | asection **local_sections) | |
3785 | { | |
3786 | struct elfNN_ia64_link_hash_table *ia64_info; | |
3787 | Elf_Internal_Shdr *symtab_hdr; | |
3788 | Elf_Internal_Rela *rel; | |
3789 | Elf_Internal_Rela *relend; | |
3790 | asection *srel; | |
3791 | bfd_boolean ret_val = TRUE; /* for non-fatal errors */ | |
3792 | bfd_vma gp_val; | |
3793 | ||
3794 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3795 | ia64_info = elfNN_ia64_hash_table (info); | |
3796 | if (ia64_info == NULL) | |
3797 | return FALSE; | |
3798 | ||
3799 | /* Infect various flags from the input section to the output section. */ | |
3800 | if (info->relocatable) | |
3801 | { | |
3802 | bfd_vma flags; | |
3803 | ||
3804 | flags = elf_section_data(input_section)->this_hdr.sh_flags; | |
3805 | flags &= SHF_IA_64_NORECOV; | |
3806 | ||
3807 | elf_section_data(input_section->output_section) | |
3808 | ->this_hdr.sh_flags |= flags; | |
3809 | } | |
3810 | ||
3811 | gp_val = _bfd_get_gp_value (output_bfd); | |
3812 | srel = get_reloc_section (input_bfd, ia64_info, input_section, FALSE); | |
3813 | ||
3814 | rel = relocs; | |
3815 | relend = relocs + input_section->reloc_count; | |
3816 | for (; rel < relend; ++rel) | |
3817 | { | |
3818 | struct elf_link_hash_entry *h; | |
3819 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
3820 | bfd_reloc_status_type r; | |
3821 | reloc_howto_type *howto; | |
3822 | unsigned long r_symndx; | |
3823 | Elf_Internal_Sym *sym; | |
3824 | unsigned int r_type; | |
3825 | bfd_vma value; | |
3826 | asection *sym_sec; | |
3827 | bfd_byte *hit_addr; | |
3828 | bfd_boolean dynamic_symbol_p; | |
3829 | bfd_boolean undef_weak_ref; | |
3830 | ||
3831 | r_type = ELFNN_R_TYPE (rel->r_info); | |
3832 | if (r_type > R_IA64_MAX_RELOC_CODE) | |
3833 | { | |
3834 | (*_bfd_error_handler) | |
3835 | (_("%B: unknown relocation type %d"), | |
3836 | input_bfd, (int) r_type); | |
3837 | bfd_set_error (bfd_error_bad_value); | |
3838 | ret_val = FALSE; | |
3839 | continue; | |
3840 | } | |
3841 | ||
3842 | howto = ia64_elf_lookup_howto (r_type); | |
3843 | r_symndx = ELFNN_R_SYM (rel->r_info); | |
3844 | h = NULL; | |
3845 | sym = NULL; | |
3846 | sym_sec = NULL; | |
3847 | undef_weak_ref = FALSE; | |
3848 | ||
3849 | if (r_symndx < symtab_hdr->sh_info) | |
3850 | { | |
3851 | /* Reloc against local symbol. */ | |
3852 | asection *msec; | |
3853 | sym = local_syms + r_symndx; | |
3854 | sym_sec = local_sections[r_symndx]; | |
3855 | msec = sym_sec; | |
3856 | value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel); | |
3857 | if (!info->relocatable | |
3858 | && (sym_sec->flags & SEC_MERGE) != 0 | |
3859 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION | |
dbaa2011 | 3860 | && sym_sec->sec_info_type == SEC_INFO_TYPE_MERGE) |
d17fe7b7 | 3861 | { |
cbe79dfe TG |
3862 | struct elfNN_ia64_local_hash_entry *loc_h; |
3863 | ||
3864 | loc_h = get_local_sym_hash (ia64_info, input_bfd, rel, FALSE); | |
3865 | if (loc_h && ! loc_h->sec_merge_done) | |
3866 | { | |
3867 | struct elfNN_ia64_dyn_sym_info *dynent; | |
3868 | unsigned int count; | |
3869 | ||
3870 | for (count = loc_h->count, dynent = loc_h->info; | |
3871 | count != 0; | |
3872 | count--, dynent++) | |
3873 | { | |
3874 | msec = sym_sec; | |
3875 | dynent->addend = | |
3876 | _bfd_merged_section_offset (output_bfd, &msec, | |
3877 | elf_section_data (msec)-> | |
3878 | sec_info, | |
3879 | sym->st_value | |
3880 | + dynent->addend); | |
3881 | dynent->addend -= sym->st_value; | |
3882 | dynent->addend += msec->output_section->vma | |
3883 | + msec->output_offset | |
3884 | - sym_sec->output_section->vma | |
3885 | - sym_sec->output_offset; | |
3886 | } | |
3887 | ||
3888 | /* We may have introduced duplicated entries. We need | |
3889 | to remove them properly. */ | |
3890 | count = sort_dyn_sym_info (loc_h->info, loc_h->count); | |
3891 | if (count != loc_h->count) | |
3892 | { | |
3893 | loc_h->count = count; | |
3894 | loc_h->sorted_count = count; | |
3895 | } | |
3896 | ||
3897 | loc_h->sec_merge_done = 1; | |
3898 | } | |
3899 | } | |
3900 | } | |
3901 | else | |
3902 | { | |
3903 | bfd_boolean unresolved_reloc; | |
3904 | bfd_boolean warned; | |
3905 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); | |
3906 | ||
3907 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
3908 | r_symndx, symtab_hdr, sym_hashes, | |
3909 | h, sym_sec, value, | |
3910 | unresolved_reloc, warned); | |
3911 | ||
3912 | if (h->root.type == bfd_link_hash_undefweak) | |
3913 | undef_weak_ref = TRUE; | |
3914 | else if (warned) | |
3915 | continue; | |
3916 | } | |
3917 | ||
dbaa2011 | 3918 | if (sym_sec != NULL && discarded_section (sym_sec)) |
cbe79dfe | 3919 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 3920 | rel, 1, relend, howto, 0, contents); |
cbe79dfe TG |
3921 | |
3922 | if (info->relocatable) | |
3923 | continue; | |
3924 | ||
3925 | hit_addr = contents + rel->r_offset; | |
3926 | value += rel->r_addend; | |
3927 | dynamic_symbol_p = elfNN_ia64_dynamic_symbol_p (h, info, r_type); | |
3928 | ||
3929 | switch (r_type) | |
3930 | { | |
3931 | case R_IA64_NONE: | |
3932 | case R_IA64_LDXMOV: | |
3933 | continue; | |
3934 | ||
3935 | case R_IA64_IMM14: | |
3936 | case R_IA64_IMM22: | |
3937 | case R_IA64_IMM64: | |
3938 | case R_IA64_DIR32MSB: | |
3939 | case R_IA64_DIR32LSB: | |
3940 | case R_IA64_DIR64MSB: | |
3941 | case R_IA64_DIR64LSB: | |
3942 | /* Install a dynamic relocation for this reloc. */ | |
3943 | if ((dynamic_symbol_p || info->shared) | |
3944 | && r_symndx != STN_UNDEF | |
3945 | && (input_section->flags & SEC_ALLOC) != 0) | |
3946 | { | |
3947 | unsigned int dyn_r_type; | |
3948 | long dynindx; | |
3949 | bfd_vma addend; | |
3950 | ||
3951 | BFD_ASSERT (srel != NULL); | |
3952 | ||
3953 | switch (r_type) | |
3954 | { | |
3955 | case R_IA64_IMM14: | |
3956 | case R_IA64_IMM22: | |
3957 | case R_IA64_IMM64: | |
3958 | /* ??? People shouldn't be doing non-pic code in | |
3959 | shared libraries nor dynamic executables. */ | |
3960 | (*_bfd_error_handler) | |
3961 | (_("%B: non-pic code with imm relocation against dynamic symbol `%s'"), | |
3962 | input_bfd, | |
3963 | h ? h->root.root.string | |
3964 | : bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
3965 | sym_sec)); | |
3966 | ret_val = FALSE; | |
3967 | continue; | |
3968 | ||
3969 | default: | |
3970 | break; | |
3971 | } | |
3972 | ||
3973 | /* If we don't need dynamic symbol lookup, find a | |
3974 | matching RELATIVE relocation. */ | |
3975 | dyn_r_type = r_type; | |
3976 | if (dynamic_symbol_p) | |
3977 | { | |
3978 | dynindx = h->dynindx; | |
3979 | addend = rel->r_addend; | |
3980 | value = 0; | |
3981 | } | |
3982 | else | |
3983 | { | |
3984 | switch (r_type) | |
3985 | { | |
3986 | case R_IA64_DIR32MSB: | |
3987 | dyn_r_type = R_IA64_REL32MSB; | |
3988 | break; | |
3989 | case R_IA64_DIR32LSB: | |
3990 | dyn_r_type = R_IA64_REL32LSB; | |
3991 | break; | |
3992 | case R_IA64_DIR64MSB: | |
3993 | dyn_r_type = R_IA64_REL64MSB; | |
3994 | break; | |
3995 | case R_IA64_DIR64LSB: | |
3996 | dyn_r_type = R_IA64_REL64LSB; | |
3997 | break; | |
3998 | ||
3999 | default: | |
4000 | break; | |
4001 | } | |
4002 | dynindx = 0; | |
4003 | addend = value; | |
4004 | } | |
4005 | ||
4006 | elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section, | |
4007 | srel, rel->r_offset, dyn_r_type, | |
4008 | dynindx, addend); | |
4009 | } | |
4010 | /* Fall through. */ | |
4011 | ||
4012 | case R_IA64_LTV32MSB: | |
4013 | case R_IA64_LTV32LSB: | |
4014 | case R_IA64_LTV64MSB: | |
4015 | case R_IA64_LTV64LSB: | |
4016 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4017 | break; | |
4018 | ||
4019 | case R_IA64_GPREL22: | |
4020 | case R_IA64_GPREL64I: | |
4021 | case R_IA64_GPREL32MSB: | |
4022 | case R_IA64_GPREL32LSB: | |
4023 | case R_IA64_GPREL64MSB: | |
4024 | case R_IA64_GPREL64LSB: | |
4025 | if (dynamic_symbol_p) | |
4026 | { | |
4027 | (*_bfd_error_handler) | |
4028 | (_("%B: @gprel relocation against dynamic symbol %s"), | |
4029 | input_bfd, | |
4030 | h ? h->root.root.string | |
4031 | : bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
4032 | sym_sec)); | |
4033 | ret_val = FALSE; | |
4034 | continue; | |
4035 | } | |
4036 | value -= gp_val; | |
4037 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4038 | break; | |
4039 | ||
4040 | case R_IA64_LTOFF22: | |
4041 | case R_IA64_LTOFF22X: | |
4042 | case R_IA64_LTOFF64I: | |
4043 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); | |
4044 | value = set_got_entry (input_bfd, info, dyn_i, (h ? h->dynindx : -1), | |
4045 | rel->r_addend, value, R_IA64_DIRNNLSB); | |
4046 | value -= gp_val; | |
4047 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4048 | break; | |
4049 | ||
4050 | case R_IA64_PLTOFF22: | |
4051 | case R_IA64_PLTOFF64I: | |
4052 | case R_IA64_PLTOFF64MSB: | |
4053 | case R_IA64_PLTOFF64LSB: | |
4054 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); | |
4055 | value = set_pltoff_entry (output_bfd, info, dyn_i, value, FALSE); | |
4056 | value -= gp_val; | |
4057 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4058 | break; | |
4059 | ||
4060 | case R_IA64_FPTR64I: | |
4061 | case R_IA64_FPTR32MSB: | |
4062 | case R_IA64_FPTR32LSB: | |
4063 | case R_IA64_FPTR64MSB: | |
4064 | case R_IA64_FPTR64LSB: | |
4065 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); | |
4066 | if (dyn_i->want_fptr) | |
4067 | { | |
4068 | if (!undef_weak_ref) | |
4069 | value = set_fptr_entry (output_bfd, info, dyn_i, value); | |
4070 | } | |
4071 | if (!dyn_i->want_fptr || info->pie) | |
4072 | { | |
4073 | long dynindx; | |
4074 | unsigned int dyn_r_type = r_type; | |
4075 | bfd_vma addend = rel->r_addend; | |
4076 | ||
4077 | /* Otherwise, we expect the dynamic linker to create | |
4078 | the entry. */ | |
4079 | ||
4080 | if (dyn_i->want_fptr) | |
4081 | { | |
4082 | if (r_type == R_IA64_FPTR64I) | |
4083 | { | |
4084 | /* We can't represent this without a dynamic symbol. | |
4085 | Adjust the relocation to be against an output | |
4086 | section symbol, which are always present in the | |
4087 | dynamic symbol table. */ | |
4088 | /* ??? People shouldn't be doing non-pic code in | |
4089 | shared libraries. Hork. */ | |
4090 | (*_bfd_error_handler) | |
4091 | (_("%B: linking non-pic code in a position independent executable"), | |
4092 | input_bfd); | |
4093 | ret_val = FALSE; | |
4094 | continue; | |
4095 | } | |
4096 | dynindx = 0; | |
4097 | addend = value; | |
4098 | dyn_r_type = r_type + R_IA64_RELNNLSB - R_IA64_FPTRNNLSB; | |
4099 | } | |
4100 | else if (h) | |
4101 | { | |
4102 | if (h->dynindx != -1) | |
4103 | dynindx = h->dynindx; | |
4104 | else | |
4105 | dynindx = (_bfd_elf_link_lookup_local_dynindx | |
4106 | (info, h->root.u.def.section->owner, | |
4107 | global_sym_index (h))); | |
4108 | value = 0; | |
4109 | } | |
4110 | else | |
4111 | { | |
4112 | dynindx = (_bfd_elf_link_lookup_local_dynindx | |
4113 | (info, input_bfd, (long) r_symndx)); | |
4114 | value = 0; | |
4115 | } | |
4116 | ||
4117 | elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section, | |
4118 | srel, rel->r_offset, dyn_r_type, | |
4119 | dynindx, addend); | |
4120 | } | |
4121 | ||
4122 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4123 | break; | |
4124 | ||
4125 | case R_IA64_LTOFF_FPTR22: | |
4126 | case R_IA64_LTOFF_FPTR64I: | |
4127 | case R_IA64_LTOFF_FPTR32MSB: | |
4128 | case R_IA64_LTOFF_FPTR32LSB: | |
4129 | case R_IA64_LTOFF_FPTR64MSB: | |
4130 | case R_IA64_LTOFF_FPTR64LSB: | |
4131 | { | |
4132 | long dynindx; | |
4133 | ||
4134 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); | |
4135 | if (dyn_i->want_fptr) | |
4136 | { | |
4137 | BFD_ASSERT (h == NULL || h->dynindx == -1); | |
4138 | if (!undef_weak_ref) | |
4139 | value = set_fptr_entry (output_bfd, info, dyn_i, value); | |
4140 | dynindx = -1; | |
4141 | } | |
4142 | else | |
4143 | { | |
4144 | /* Otherwise, we expect the dynamic linker to create | |
4145 | the entry. */ | |
4146 | if (h) | |
4147 | { | |
4148 | if (h->dynindx != -1) | |
4149 | dynindx = h->dynindx; | |
4150 | else | |
4151 | dynindx = (_bfd_elf_link_lookup_local_dynindx | |
4152 | (info, h->root.u.def.section->owner, | |
4153 | global_sym_index (h))); | |
4154 | } | |
4155 | else | |
4156 | dynindx = (_bfd_elf_link_lookup_local_dynindx | |
4157 | (info, input_bfd, (long) r_symndx)); | |
4158 | value = 0; | |
4159 | } | |
4160 | ||
4161 | value = set_got_entry (output_bfd, info, dyn_i, dynindx, | |
4162 | rel->r_addend, value, R_IA64_FPTRNNLSB); | |
4163 | value -= gp_val; | |
4164 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4165 | } | |
4166 | break; | |
4167 | ||
4168 | case R_IA64_PCREL32MSB: | |
4169 | case R_IA64_PCREL32LSB: | |
4170 | case R_IA64_PCREL64MSB: | |
4171 | case R_IA64_PCREL64LSB: | |
4172 | /* Install a dynamic relocation for this reloc. */ | |
4173 | if (dynamic_symbol_p && r_symndx != STN_UNDEF) | |
4174 | { | |
4175 | BFD_ASSERT (srel != NULL); | |
4176 | ||
4177 | elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section, | |
4178 | srel, rel->r_offset, r_type, | |
4179 | h->dynindx, rel->r_addend); | |
4180 | } | |
4181 | goto finish_pcrel; | |
4182 | ||
4183 | case R_IA64_PCREL21B: | |
4184 | case R_IA64_PCREL60B: | |
4185 | /* We should have created a PLT entry for any dynamic symbol. */ | |
4186 | dyn_i = NULL; | |
4187 | if (h) | |
4188 | dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE); | |
4189 | ||
4190 | if (dyn_i && dyn_i->want_plt2) | |
4191 | { | |
4192 | /* Should have caught this earlier. */ | |
4193 | BFD_ASSERT (rel->r_addend == 0); | |
4194 | ||
4195 | value = (ia64_info->root.splt->output_section->vma | |
4196 | + ia64_info->root.splt->output_offset | |
4197 | + dyn_i->plt2_offset); | |
4198 | } | |
4199 | else | |
4200 | { | |
4201 | /* Since there's no PLT entry, Validate that this is | |
4202 | locally defined. */ | |
4203 | BFD_ASSERT (undef_weak_ref || sym_sec->output_section != NULL); | |
4204 | ||
4205 | /* If the symbol is undef_weak, we shouldn't be trying | |
4206 | to call it. There's every chance that we'd wind up | |
4207 | with an out-of-range fixup here. Don't bother setting | |
4208 | any value at all. */ | |
4209 | if (undef_weak_ref) | |
4210 | continue; | |
4211 | } | |
4212 | goto finish_pcrel; | |
4213 | ||
4214 | case R_IA64_PCREL21BI: | |
4215 | case R_IA64_PCREL21F: | |
4216 | case R_IA64_PCREL21M: | |
4217 | case R_IA64_PCREL22: | |
4218 | case R_IA64_PCREL64I: | |
4219 | /* The PCREL21BI reloc is specifically not intended for use with | |
4220 | dynamic relocs. PCREL21F and PCREL21M are used for speculation | |
4221 | fixup code, and thus probably ought not be dynamic. The | |
4222 | PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */ | |
4223 | if (dynamic_symbol_p) | |
4224 | { | |
4225 | const char *msg; | |
4226 | ||
4227 | if (r_type == R_IA64_PCREL21BI) | |
4228 | msg = _("%B: @internal branch to dynamic symbol %s"); | |
4229 | else if (r_type == R_IA64_PCREL21F || r_type == R_IA64_PCREL21M) | |
4230 | msg = _("%B: speculation fixup to dynamic symbol %s"); | |
4231 | else | |
4232 | msg = _("%B: @pcrel relocation against dynamic symbol %s"); | |
4233 | (*_bfd_error_handler) (msg, input_bfd, | |
4234 | h ? h->root.root.string | |
4235 | : bfd_elf_sym_name (input_bfd, | |
4236 | symtab_hdr, | |
4237 | sym, | |
4238 | sym_sec)); | |
4239 | ret_val = FALSE; | |
4240 | continue; | |
4241 | } | |
4242 | goto finish_pcrel; | |
4243 | ||
4244 | finish_pcrel: | |
4245 | /* Make pc-relative. */ | |
4246 | value -= (input_section->output_section->vma | |
4247 | + input_section->output_offset | |
4248 | + rel->r_offset) & ~ (bfd_vma) 0x3; | |
4249 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4250 | break; | |
4251 | ||
4252 | case R_IA64_SEGREL32MSB: | |
4253 | case R_IA64_SEGREL32LSB: | |
4254 | case R_IA64_SEGREL64MSB: | |
4255 | case R_IA64_SEGREL64LSB: | |
4256 | { | |
4257 | /* Find the segment that contains the output_section. */ | |
4258 | Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section | |
4259 | (output_bfd, input_section->output_section); | |
4260 | ||
4261 | if (p == NULL) | |
4262 | { | |
4263 | r = bfd_reloc_notsupported; | |
4264 | } | |
4265 | else | |
4266 | { | |
4267 | /* The VMA of the segment is the vaddr of the associated | |
4268 | program header. */ | |
4269 | if (value > p->p_vaddr) | |
4270 | value -= p->p_vaddr; | |
4271 | else | |
4272 | value = 0; | |
4273 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4274 | } | |
4275 | break; | |
4276 | } | |
4277 | ||
4278 | case R_IA64_SECREL32MSB: | |
4279 | case R_IA64_SECREL32LSB: | |
4280 | case R_IA64_SECREL64MSB: | |
4281 | case R_IA64_SECREL64LSB: | |
4282 | /* Make output-section relative to section where the symbol | |
4283 | is defined. PR 475 */ | |
4284 | if (sym_sec) | |
4285 | value -= sym_sec->output_section->vma; | |
4286 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4287 | break; | |
4288 | ||
4289 | case R_IA64_IPLTMSB: | |
4290 | case R_IA64_IPLTLSB: | |
4291 | /* Install a dynamic relocation for this reloc. */ | |
4292 | if ((dynamic_symbol_p || info->shared) | |
4293 | && (input_section->flags & SEC_ALLOC) != 0) | |
4294 | { | |
4295 | BFD_ASSERT (srel != NULL); | |
4296 | ||
4297 | /* If we don't need dynamic symbol lookup, install two | |
4298 | RELATIVE relocations. */ | |
4299 | if (!dynamic_symbol_p) | |
4300 | { | |
4301 | unsigned int dyn_r_type; | |
4302 | ||
4303 | if (r_type == R_IA64_IPLTMSB) | |
4304 | dyn_r_type = R_IA64_REL64MSB; | |
4305 | else | |
4306 | dyn_r_type = R_IA64_REL64LSB; | |
4307 | ||
4308 | elfNN_ia64_install_dyn_reloc (output_bfd, info, | |
4309 | input_section, | |
4310 | srel, rel->r_offset, | |
4311 | dyn_r_type, 0, value); | |
4312 | elfNN_ia64_install_dyn_reloc (output_bfd, info, | |
4313 | input_section, | |
4314 | srel, rel->r_offset + 8, | |
4315 | dyn_r_type, 0, gp_val); | |
4316 | } | |
4317 | else | |
4318 | elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section, | |
4319 | srel, rel->r_offset, r_type, | |
4320 | h->dynindx, rel->r_addend); | |
4321 | } | |
4322 | ||
4323 | if (r_type == R_IA64_IPLTMSB) | |
4324 | r_type = R_IA64_DIR64MSB; | |
4325 | else | |
4326 | r_type = R_IA64_DIR64LSB; | |
4327 | ia64_elf_install_value (hit_addr, value, r_type); | |
4328 | r = ia64_elf_install_value (hit_addr + 8, gp_val, r_type); | |
4329 | break; | |
4330 | ||
4331 | case R_IA64_TPREL14: | |
4332 | case R_IA64_TPREL22: | |
4333 | case R_IA64_TPREL64I: | |
4334 | if (elf_hash_table (info)->tls_sec == NULL) | |
4335 | goto missing_tls_sec; | |
4336 | value -= elfNN_ia64_tprel_base (info); | |
4337 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4338 | break; | |
4339 | ||
4340 | case R_IA64_DTPREL14: | |
4341 | case R_IA64_DTPREL22: | |
4342 | case R_IA64_DTPREL64I: | |
4343 | case R_IA64_DTPREL32LSB: | |
4344 | case R_IA64_DTPREL32MSB: | |
4345 | case R_IA64_DTPREL64LSB: | |
4346 | case R_IA64_DTPREL64MSB: | |
4347 | if (elf_hash_table (info)->tls_sec == NULL) | |
4348 | goto missing_tls_sec; | |
4349 | value -= elfNN_ia64_dtprel_base (info); | |
4350 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4351 | break; | |
4352 | ||
4353 | case R_IA64_LTOFF_TPREL22: | |
4354 | case R_IA64_LTOFF_DTPMOD22: | |
4355 | case R_IA64_LTOFF_DTPREL22: | |
4356 | { | |
4357 | int got_r_type; | |
4358 | long dynindx = h ? h->dynindx : -1; | |
4359 | bfd_vma r_addend = rel->r_addend; | |
4360 | ||
4361 | switch (r_type) | |
4362 | { | |
4363 | default: | |
4364 | case R_IA64_LTOFF_TPREL22: | |
4365 | if (!dynamic_symbol_p) | |
4366 | { | |
4367 | if (elf_hash_table (info)->tls_sec == NULL) | |
4368 | goto missing_tls_sec; | |
4369 | if (!info->shared) | |
4370 | value -= elfNN_ia64_tprel_base (info); | |
4371 | else | |
4372 | { | |
4373 | r_addend += value - elfNN_ia64_dtprel_base (info); | |
4374 | dynindx = 0; | |
4375 | } | |
4376 | } | |
4377 | got_r_type = R_IA64_TPREL64LSB; | |
4378 | break; | |
4379 | case R_IA64_LTOFF_DTPMOD22: | |
4380 | if (!dynamic_symbol_p && !info->shared) | |
4381 | value = 1; | |
4382 | got_r_type = R_IA64_DTPMOD64LSB; | |
4383 | break; | |
4384 | case R_IA64_LTOFF_DTPREL22: | |
4385 | if (!dynamic_symbol_p) | |
4386 | { | |
4387 | if (elf_hash_table (info)->tls_sec == NULL) | |
4388 | goto missing_tls_sec; | |
4389 | value -= elfNN_ia64_dtprel_base (info); | |
4390 | } | |
4391 | got_r_type = R_IA64_DTPRELNNLSB; | |
4392 | break; | |
4393 | } | |
4394 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); | |
4395 | value = set_got_entry (input_bfd, info, dyn_i, dynindx, r_addend, | |
4396 | value, got_r_type); | |
4397 | value -= gp_val; | |
4398 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4399 | } | |
4400 | break; | |
4401 | ||
4402 | default: | |
4403 | r = bfd_reloc_notsupported; | |
4404 | break; | |
4405 | } | |
4406 | ||
4407 | switch (r) | |
4408 | { | |
4409 | case bfd_reloc_ok: | |
4410 | break; | |
4411 | ||
4412 | case bfd_reloc_undefined: | |
4413 | /* This can happen for global table relative relocs if | |
4414 | __gp is undefined. This is a panic situation so we | |
4415 | don't try to continue. */ | |
4416 | (*info->callbacks->undefined_symbol) | |
4417 | (info, "__gp", input_bfd, input_section, rel->r_offset, 1); | |
4418 | return FALSE; | |
4419 | ||
4420 | case bfd_reloc_notsupported: | |
4421 | { | |
4422 | const char *name; | |
4423 | ||
4424 | if (h) | |
4425 | name = h->root.root.string; | |
4426 | else | |
4427 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
4428 | sym_sec); | |
4429 | if (!(*info->callbacks->warning) (info, _("unsupported reloc"), | |
4430 | name, input_bfd, | |
4431 | input_section, rel->r_offset)) | |
4432 | return FALSE; | |
4433 | ret_val = FALSE; | |
4434 | } | |
4435 | break; | |
4436 | ||
4437 | case bfd_reloc_dangerous: | |
4438 | case bfd_reloc_outofrange: | |
4439 | case bfd_reloc_overflow: | |
4440 | default: | |
4441 | missing_tls_sec: | |
4442 | { | |
4443 | const char *name; | |
4444 | ||
4445 | if (h) | |
4446 | name = h->root.root.string; | |
4447 | else | |
4448 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
4449 | sym_sec); | |
4450 | ||
4451 | switch (r_type) | |
4452 | { | |
4453 | case R_IA64_TPREL14: | |
4454 | case R_IA64_TPREL22: | |
4455 | case R_IA64_TPREL64I: | |
4456 | case R_IA64_DTPREL14: | |
4457 | case R_IA64_DTPREL22: | |
4458 | case R_IA64_DTPREL64I: | |
4459 | case R_IA64_DTPREL32LSB: | |
4460 | case R_IA64_DTPREL32MSB: | |
4461 | case R_IA64_DTPREL64LSB: | |
4462 | case R_IA64_DTPREL64MSB: | |
4463 | case R_IA64_LTOFF_TPREL22: | |
4464 | case R_IA64_LTOFF_DTPMOD22: | |
4465 | case R_IA64_LTOFF_DTPREL22: | |
4466 | (*_bfd_error_handler) | |
4467 | (_("%B: missing TLS section for relocation %s against `%s' at 0x%lx in section `%A'."), | |
4468 | input_bfd, input_section, howto->name, name, | |
4469 | rel->r_offset); | |
4470 | break; | |
4471 | ||
4472 | case R_IA64_PCREL21B: | |
4473 | case R_IA64_PCREL21BI: | |
4474 | case R_IA64_PCREL21M: | |
4475 | case R_IA64_PCREL21F: | |
4476 | if (is_elf_hash_table (info->hash)) | |
4477 | { | |
4478 | /* Relaxtion is always performed for ELF output. | |
4479 | Overflow failures for those relocations mean | |
4480 | that the section is too big to relax. */ | |
4481 | (*_bfd_error_handler) | |
4482 | (_("%B: Can't relax br (%s) to `%s' at 0x%lx in section `%A' with size 0x%lx (> 0x1000000)."), | |
4483 | input_bfd, input_section, howto->name, name, | |
4484 | rel->r_offset, input_section->size); | |
4485 | break; | |
4486 | } | |
4487 | default: | |
4488 | if (!(*info->callbacks->reloc_overflow) (info, | |
4489 | &h->root, | |
4490 | name, | |
4491 | howto->name, | |
4492 | (bfd_vma) 0, | |
4493 | input_bfd, | |
4494 | input_section, | |
4495 | rel->r_offset)) | |
4496 | return FALSE; | |
4497 | break; | |
4498 | } | |
4499 | ||
4500 | ret_val = FALSE; | |
4501 | } | |
4502 | break; | |
4503 | } | |
4504 | } | |
4505 | ||
4506 | return ret_val; | |
4507 | } | |
4508 | ||
4509 | static bfd_boolean | |
4510 | elfNN_ia64_finish_dynamic_symbol (bfd *output_bfd, | |
4511 | struct bfd_link_info *info, | |
4512 | struct elf_link_hash_entry *h, | |
4513 | Elf_Internal_Sym *sym) | |
4514 | { | |
4515 | struct elfNN_ia64_link_hash_table *ia64_info; | |
4516 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
4517 | ||
4518 | ia64_info = elfNN_ia64_hash_table (info); | |
4519 | if (ia64_info == NULL) | |
4520 | return FALSE; | |
4521 | ||
4522 | dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE); | |
4523 | ||
4524 | /* Fill in the PLT data, if required. */ | |
4525 | if (dyn_i && dyn_i->want_plt) | |
4526 | { | |
4527 | Elf_Internal_Rela outrel; | |
4528 | bfd_byte *loc; | |
4529 | asection *plt_sec; | |
4530 | bfd_vma plt_addr, pltoff_addr, gp_val, plt_index; | |
4531 | ||
4532 | gp_val = _bfd_get_gp_value (output_bfd); | |
4533 | ||
4534 | /* Initialize the minimal PLT entry. */ | |
4535 | ||
4536 | plt_index = (dyn_i->plt_offset - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE; | |
4537 | plt_sec = ia64_info->root.splt; | |
4538 | loc = plt_sec->contents + dyn_i->plt_offset; | |
4539 | ||
4540 | memcpy (loc, plt_min_entry, PLT_MIN_ENTRY_SIZE); | |
4541 | ia64_elf_install_value (loc, plt_index, R_IA64_IMM22); | |
4542 | ia64_elf_install_value (loc+2, -dyn_i->plt_offset, R_IA64_PCREL21B); | |
4543 | ||
4544 | plt_addr = (plt_sec->output_section->vma | |
4545 | + plt_sec->output_offset | |
4546 | + dyn_i->plt_offset); | |
4547 | pltoff_addr = set_pltoff_entry (output_bfd, info, dyn_i, plt_addr, TRUE); | |
4548 | ||
4549 | /* Initialize the FULL PLT entry, if needed. */ | |
4550 | if (dyn_i->want_plt2) | |
4551 | { | |
4552 | loc = plt_sec->contents + dyn_i->plt2_offset; | |
4553 | ||
4554 | memcpy (loc, plt_full_entry, PLT_FULL_ENTRY_SIZE); | |
4555 | ia64_elf_install_value (loc, pltoff_addr - gp_val, R_IA64_IMM22); | |
4556 | ||
4557 | /* Mark the symbol as undefined, rather than as defined in the | |
4558 | plt section. Leave the value alone. */ | |
4559 | /* ??? We didn't redefine it in adjust_dynamic_symbol in the | |
4560 | first place. But perhaps elflink.c did some for us. */ | |
4561 | if (!h->def_regular) | |
4562 | sym->st_shndx = SHN_UNDEF; | |
4563 | } | |
4564 | ||
4565 | /* Create the dynamic relocation. */ | |
4566 | outrel.r_offset = pltoff_addr; | |
4567 | if (bfd_little_endian (output_bfd)) | |
4568 | outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTLSB); | |
4569 | else | |
4570 | outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTMSB); | |
4571 | outrel.r_addend = 0; | |
4572 | ||
4573 | /* This is fun. In the .IA_64.pltoff section, we've got entries | |
4574 | that correspond both to real PLT entries, and those that | |
4575 | happened to resolve to local symbols but need to be created | |
4576 | to satisfy @pltoff relocations. The .rela.IA_64.pltoff | |
4577 | relocations for the real PLT should come at the end of the | |
4578 | section, so that they can be indexed by plt entry at runtime. | |
4579 | ||
4580 | We emitted all of the relocations for the non-PLT @pltoff | |
4581 | entries during relocate_section. So we can consider the | |
4582 | existing sec->reloc_count to be the base of the array of | |
4583 | PLT relocations. */ | |
4584 | ||
4585 | loc = ia64_info->rel_pltoff_sec->contents; | |
4586 | loc += ((ia64_info->rel_pltoff_sec->reloc_count + plt_index) | |
4587 | * sizeof (ElfNN_External_Rela)); | |
4588 | bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc); | |
4589 | } | |
4590 | ||
4591 | /* Mark some specially defined symbols as absolute. */ | |
9637f6ef | 4592 | if (h == ia64_info->root.hdynamic |
cbe79dfe TG |
4593 | || h == ia64_info->root.hgot |
4594 | || h == ia64_info->root.hplt) | |
4595 | sym->st_shndx = SHN_ABS; | |
4596 | ||
4597 | return TRUE; | |
4598 | } | |
4599 | ||
4600 | static bfd_boolean | |
4601 | elfNN_ia64_finish_dynamic_sections (bfd *abfd, | |
4602 | struct bfd_link_info *info) | |
4603 | { | |
4604 | struct elfNN_ia64_link_hash_table *ia64_info; | |
4605 | bfd *dynobj; | |
4606 | ||
4607 | ia64_info = elfNN_ia64_hash_table (info); | |
4608 | if (ia64_info == NULL) | |
4609 | return FALSE; | |
4610 | ||
4611 | dynobj = ia64_info->root.dynobj; | |
4612 | ||
4613 | if (elf_hash_table (info)->dynamic_sections_created) | |
4614 | { | |
4615 | ElfNN_External_Dyn *dyncon, *dynconend; | |
4616 | asection *sdyn, *sgotplt; | |
4617 | bfd_vma gp_val; | |
4618 | ||
3d4d4302 AM |
4619 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
4620 | sgotplt = bfd_get_linker_section (dynobj, ".got.plt"); | |
cbe79dfe TG |
4621 | BFD_ASSERT (sdyn != NULL); |
4622 | dyncon = (ElfNN_External_Dyn *) sdyn->contents; | |
4623 | dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size); | |
4624 | ||
4625 | gp_val = _bfd_get_gp_value (abfd); | |
4626 | ||
4627 | for (; dyncon < dynconend; dyncon++) | |
4628 | { | |
4629 | Elf_Internal_Dyn dyn; | |
4630 | ||
4631 | bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn); | |
4632 | ||
4633 | switch (dyn.d_tag) | |
4634 | { | |
4635 | case DT_PLTGOT: | |
4636 | dyn.d_un.d_ptr = gp_val; | |
4637 | break; | |
4638 | ||
4639 | case DT_PLTRELSZ: | |
4640 | dyn.d_un.d_val = (ia64_info->minplt_entries | |
4641 | * sizeof (ElfNN_External_Rela)); | |
4642 | break; | |
4643 | ||
4644 | case DT_JMPREL: | |
4645 | /* See the comment above in finish_dynamic_symbol. */ | |
4646 | dyn.d_un.d_ptr = (ia64_info->rel_pltoff_sec->output_section->vma | |
4647 | + ia64_info->rel_pltoff_sec->output_offset | |
4648 | + (ia64_info->rel_pltoff_sec->reloc_count | |
4649 | * sizeof (ElfNN_External_Rela))); | |
4650 | break; | |
4651 | ||
4652 | case DT_IA_64_PLT_RESERVE: | |
4653 | dyn.d_un.d_ptr = (sgotplt->output_section->vma | |
4654 | + sgotplt->output_offset); | |
4655 | break; | |
4656 | ||
4657 | case DT_RELASZ: | |
4658 | /* Do not have RELASZ include JMPREL. This makes things | |
4659 | easier on ld.so. This is not what the rest of BFD set up. */ | |
4660 | dyn.d_un.d_val -= (ia64_info->minplt_entries | |
4661 | * sizeof (ElfNN_External_Rela)); | |
4662 | break; | |
4663 | } | |
4664 | ||
4665 | bfd_elfNN_swap_dyn_out (abfd, &dyn, dyncon); | |
4666 | } | |
4667 | ||
4668 | /* Initialize the PLT0 entry. */ | |
4669 | if (ia64_info->root.splt) | |
4670 | { | |
4671 | bfd_byte *loc = ia64_info->root.splt->contents; | |
4672 | bfd_vma pltres; | |
4673 | ||
4674 | memcpy (loc, plt_header, PLT_HEADER_SIZE); | |
4675 | ||
4676 | pltres = (sgotplt->output_section->vma | |
4677 | + sgotplt->output_offset | |
4678 | - gp_val); | |
4679 | ||
4680 | ia64_elf_install_value (loc+1, pltres, R_IA64_GPREL22); | |
4681 | } | |
4682 | } | |
4683 | ||
4684 | return TRUE; | |
4685 | } | |
4686 | \f | |
4687 | /* ELF file flag handling: */ | |
4688 | ||
4689 | /* Function to keep IA-64 specific file flags. */ | |
4690 | static bfd_boolean | |
4691 | elfNN_ia64_set_private_flags (bfd *abfd, flagword flags) | |
4692 | { | |
4693 | BFD_ASSERT (!elf_flags_init (abfd) | |
4694 | || elf_elfheader (abfd)->e_flags == flags); | |
4695 | ||
4696 | elf_elfheader (abfd)->e_flags = flags; | |
4697 | elf_flags_init (abfd) = TRUE; | |
4698 | return TRUE; | |
4699 | } | |
4700 | ||
4701 | /* Merge backend specific data from an object file to the output | |
4702 | object file when linking. */ | |
4703 | static bfd_boolean | |
4704 | elfNN_ia64_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
4705 | { | |
4706 | flagword out_flags; | |
4707 | flagword in_flags; | |
4708 | bfd_boolean ok = TRUE; | |
4709 | ||
4710 | /* Don't even pretend to support mixed-format linking. */ | |
4711 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
4712 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
4713 | return FALSE; | |
4714 | ||
4715 | in_flags = elf_elfheader (ibfd)->e_flags; | |
4716 | out_flags = elf_elfheader (obfd)->e_flags; | |
4717 | ||
4718 | if (! elf_flags_init (obfd)) | |
4719 | { | |
4720 | elf_flags_init (obfd) = TRUE; | |
4721 | elf_elfheader (obfd)->e_flags = in_flags; | |
4722 | ||
4723 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
4724 | && bfd_get_arch_info (obfd)->the_default) | |
4725 | { | |
4726 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
4727 | bfd_get_mach (ibfd)); | |
4728 | } | |
4729 | ||
4730 | return TRUE; | |
4731 | } | |
4732 | ||
4733 | /* Check flag compatibility. */ | |
4734 | if (in_flags == out_flags) | |
4735 | return TRUE; | |
4736 | ||
4737 | /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */ | |
4738 | if (!(in_flags & EF_IA_64_REDUCEDFP) && (out_flags & EF_IA_64_REDUCEDFP)) | |
4739 | elf_elfheader (obfd)->e_flags &= ~EF_IA_64_REDUCEDFP; | |
4740 | ||
4741 | if ((in_flags & EF_IA_64_TRAPNIL) != (out_flags & EF_IA_64_TRAPNIL)) | |
4742 | { | |
4743 | (*_bfd_error_handler) | |
4744 | (_("%B: linking trap-on-NULL-dereference with non-trapping files"), | |
4745 | ibfd); | |
4746 | ||
4747 | bfd_set_error (bfd_error_bad_value); | |
4748 | ok = FALSE; | |
4749 | } | |
4750 | if ((in_flags & EF_IA_64_BE) != (out_flags & EF_IA_64_BE)) | |
4751 | { | |
4752 | (*_bfd_error_handler) | |
4753 | (_("%B: linking big-endian files with little-endian files"), | |
4754 | ibfd); | |
4755 | ||
4756 | bfd_set_error (bfd_error_bad_value); | |
4757 | ok = FALSE; | |
4758 | } | |
4759 | if ((in_flags & EF_IA_64_ABI64) != (out_flags & EF_IA_64_ABI64)) | |
4760 | { | |
4761 | (*_bfd_error_handler) | |
4762 | (_("%B: linking 64-bit files with 32-bit files"), | |
4763 | ibfd); | |
4764 | ||
4765 | bfd_set_error (bfd_error_bad_value); | |
4766 | ok = FALSE; | |
4767 | } | |
4768 | if ((in_flags & EF_IA_64_CONS_GP) != (out_flags & EF_IA_64_CONS_GP)) | |
4769 | { | |
4770 | (*_bfd_error_handler) | |
4771 | (_("%B: linking constant-gp files with non-constant-gp files"), | |
4772 | ibfd); | |
4773 | ||
4774 | bfd_set_error (bfd_error_bad_value); | |
4775 | ok = FALSE; | |
4776 | } | |
4777 | if ((in_flags & EF_IA_64_NOFUNCDESC_CONS_GP) | |
4778 | != (out_flags & EF_IA_64_NOFUNCDESC_CONS_GP)) | |
4779 | { | |
4780 | (*_bfd_error_handler) | |
4781 | (_("%B: linking auto-pic files with non-auto-pic files"), | |
4782 | ibfd); | |
4783 | ||
4784 | bfd_set_error (bfd_error_bad_value); | |
4785 | ok = FALSE; | |
4786 | } | |
4787 | ||
4788 | return ok; | |
4789 | } | |
4790 | ||
4791 | static bfd_boolean | |
2c3fc389 | 4792 | elfNN_ia64_print_private_bfd_data (bfd *abfd, void * ptr) |
cbe79dfe TG |
4793 | { |
4794 | FILE *file = (FILE *) ptr; | |
4795 | flagword flags = elf_elfheader (abfd)->e_flags; | |
4796 | ||
4797 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
4798 | ||
4799 | fprintf (file, "private flags = %s%s%s%s%s%s%s%s\n", | |
4800 | (flags & EF_IA_64_TRAPNIL) ? "TRAPNIL, " : "", | |
4801 | (flags & EF_IA_64_EXT) ? "EXT, " : "", | |
4802 | (flags & EF_IA_64_BE) ? "BE, " : "LE, ", | |
4803 | (flags & EF_IA_64_REDUCEDFP) ? "REDUCEDFP, " : "", | |
4804 | (flags & EF_IA_64_CONS_GP) ? "CONS_GP, " : "", | |
4805 | (flags & EF_IA_64_NOFUNCDESC_CONS_GP) ? "NOFUNCDESC_CONS_GP, " : "", | |
4806 | (flags & EF_IA_64_ABSOLUTE) ? "ABSOLUTE, " : "", | |
4807 | (flags & EF_IA_64_ABI64) ? "ABI64" : "ABI32"); | |
4808 | ||
4809 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
4810 | return TRUE; | |
4811 | } | |
4812 | ||
4813 | static enum elf_reloc_type_class | |
7e612e98 AM |
4814 | elfNN_ia64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
4815 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
4816 | const Elf_Internal_Rela *rela) | |
cbe79dfe TG |
4817 | { |
4818 | switch ((int) ELFNN_R_TYPE (rela->r_info)) | |
4819 | { | |
4820 | case R_IA64_REL32MSB: | |
4821 | case R_IA64_REL32LSB: | |
4822 | case R_IA64_REL64MSB: | |
4823 | case R_IA64_REL64LSB: | |
4824 | return reloc_class_relative; | |
4825 | case R_IA64_IPLTMSB: | |
4826 | case R_IA64_IPLTLSB: | |
4827 | return reloc_class_plt; | |
4828 | case R_IA64_COPY: | |
4829 | return reloc_class_copy; | |
4830 | default: | |
4831 | return reloc_class_normal; | |
4832 | } | |
4833 | } | |
4834 | ||
4835 | static const struct bfd_elf_special_section elfNN_ia64_special_sections[] = | |
4836 | { | |
4837 | { STRING_COMMA_LEN (".sbss"), -1, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, | |
4838 | { STRING_COMMA_LEN (".sdata"), -1, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, | |
4839 | { NULL, 0, 0, 0, 0 } | |
4840 | }; | |
4841 | ||
4842 | static bfd_boolean | |
4843 | elfNN_ia64_object_p (bfd *abfd) | |
4844 | { | |
4845 | asection *sec; | |
4846 | asection *group, *unwi, *unw; | |
4847 | flagword flags; | |
4848 | const char *name; | |
4849 | char *unwi_name, *unw_name; | |
4850 | bfd_size_type amt; | |
4851 | ||
4852 | if (abfd->flags & DYNAMIC) | |
4853 | return TRUE; | |
4854 | ||
4855 | /* Flags for fake group section. */ | |
4856 | flags = (SEC_LINKER_CREATED | SEC_GROUP | SEC_LINK_ONCE | |
4857 | | SEC_EXCLUDE); | |
4858 | ||
4859 | /* We add a fake section group for each .gnu.linkonce.t.* section, | |
4860 | which isn't in a section group, and its unwind sections. */ | |
4861 | for (sec = abfd->sections; sec != NULL; sec = sec->next) | |
4862 | { | |
4863 | if (elf_sec_group (sec) == NULL | |
4864 | && ((sec->flags & (SEC_LINK_ONCE | SEC_CODE | SEC_GROUP)) | |
4865 | == (SEC_LINK_ONCE | SEC_CODE)) | |
4866 | && CONST_STRNEQ (sec->name, ".gnu.linkonce.t.")) | |
4867 | { | |
4868 | name = sec->name + 16; | |
4869 | ||
4870 | amt = strlen (name) + sizeof (".gnu.linkonce.ia64unwi."); | |
4871 | unwi_name = bfd_alloc (abfd, amt); | |
4872 | if (!unwi_name) | |
4873 | return FALSE; | |
4874 | ||
4875 | strcpy (stpcpy (unwi_name, ".gnu.linkonce.ia64unwi."), name); | |
4876 | unwi = bfd_get_section_by_name (abfd, unwi_name); | |
4877 | ||
4878 | amt = strlen (name) + sizeof (".gnu.linkonce.ia64unw."); | |
4879 | unw_name = bfd_alloc (abfd, amt); | |
4880 | if (!unw_name) | |
4881 | return FALSE; | |
4882 | ||
4883 | strcpy (stpcpy (unw_name, ".gnu.linkonce.ia64unw."), name); | |
4884 | unw = bfd_get_section_by_name (abfd, unw_name); | |
4885 | ||
4886 | /* We need to create a fake group section for it and its | |
4887 | unwind sections. */ | |
4888 | group = bfd_make_section_anyway_with_flags (abfd, name, | |
4889 | flags); | |
4890 | if (group == NULL) | |
4891 | return FALSE; | |
4892 | ||
4893 | /* Move the fake group section to the beginning. */ | |
4894 | bfd_section_list_remove (abfd, group); | |
4895 | bfd_section_list_prepend (abfd, group); | |
4896 | ||
4897 | elf_next_in_group (group) = sec; | |
4898 | ||
4899 | elf_group_name (sec) = name; | |
4900 | elf_next_in_group (sec) = sec; | |
4901 | elf_sec_group (sec) = group; | |
4902 | ||
4903 | if (unwi) | |
4904 | { | |
4905 | elf_group_name (unwi) = name; | |
4906 | elf_next_in_group (unwi) = sec; | |
4907 | elf_next_in_group (sec) = unwi; | |
4908 | elf_sec_group (unwi) = group; | |
4909 | } | |
4910 | ||
4911 | if (unw) | |
4912 | { | |
4913 | elf_group_name (unw) = name; | |
4914 | if (unwi) | |
4915 | { | |
4916 | elf_next_in_group (unw) = elf_next_in_group (unwi); | |
4917 | elf_next_in_group (unwi) = unw; | |
4918 | } | |
4919 | else | |
4920 | { | |
4921 | elf_next_in_group (unw) = sec; | |
4922 | elf_next_in_group (sec) = unw; | |
4923 | } | |
4924 | elf_sec_group (unw) = group; | |
4925 | } | |
4926 | ||
4927 | /* Fake SHT_GROUP section header. */ | |
4928 | elf_section_data (group)->this_hdr.bfd_section = group; | |
4929 | elf_section_data (group)->this_hdr.sh_type = SHT_GROUP; | |
4930 | } | |
4931 | } | |
4932 | return TRUE; | |
4933 | } | |
4934 | ||
4935 | static bfd_boolean | |
4936 | elfNN_ia64_hpux_vec (const bfd_target *vec) | |
4937 | { | |
4938 | extern const bfd_target bfd_elfNN_ia64_hpux_big_vec; | |
4939 | return (vec == & bfd_elfNN_ia64_hpux_big_vec); | |
4940 | } | |
4941 | ||
4942 | static void | |
4943 | elfNN_hpux_post_process_headers (bfd *abfd, | |
4944 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
4945 | { | |
4946 | Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); | |
4947 | ||
4948 | i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi; | |
4949 | i_ehdrp->e_ident[EI_ABIVERSION] = 1; | |
4950 | } | |
4951 | ||
4952 | static bfd_boolean | |
4953 | elfNN_hpux_backend_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, | |
4954 | asection *sec, int *retval) | |
4955 | { | |
4956 | if (bfd_is_com_section (sec)) | |
4957 | { | |
4958 | *retval = SHN_IA_64_ANSI_COMMON; | |
4959 | return TRUE; | |
4960 | } | |
4961 | return FALSE; | |
4962 | } | |
4963 | ||
4964 | static void | |
4965 | elfNN_hpux_backend_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, | |
4966 | asymbol *asym) | |
4967 | { | |
4968 | elf_symbol_type *elfsym = (elf_symbol_type *) asym; | |
4969 | ||
4970 | switch (elfsym->internal_elf_sym.st_shndx) | |
4971 | { | |
4972 | case SHN_IA_64_ANSI_COMMON: | |
4973 | asym->section = bfd_com_section_ptr; | |
4974 | asym->value = elfsym->internal_elf_sym.st_size; | |
4975 | asym->flags &= ~BSF_GLOBAL; | |
4976 | break; | |
4977 | } | |
4978 | } | |
cbe79dfe TG |
4979 | \f |
4980 | #define TARGET_LITTLE_SYM bfd_elfNN_ia64_little_vec | |
4981 | #define TARGET_LITTLE_NAME "elfNN-ia64-little" | |
4982 | #define TARGET_BIG_SYM bfd_elfNN_ia64_big_vec | |
4983 | #define TARGET_BIG_NAME "elfNN-ia64-big" | |
4984 | #define ELF_ARCH bfd_arch_ia64 | |
4985 | #define ELF_TARGET_ID IA64_ELF_DATA | |
4986 | #define ELF_MACHINE_CODE EM_IA_64 | |
4987 | #define ELF_MACHINE_ALT1 1999 /* EAS2.3 */ | |
4988 | #define ELF_MACHINE_ALT2 1998 /* EAS2.2 */ | |
4989 | #define ELF_MAXPAGESIZE 0x10000 /* 64KB */ | |
4990 | #define ELF_COMMONPAGESIZE 0x4000 /* 16KB */ | |
4991 | ||
4992 | #define elf_backend_section_from_shdr \ | |
4993 | elfNN_ia64_section_from_shdr | |
4994 | #define elf_backend_section_flags \ | |
4995 | elfNN_ia64_section_flags | |
4996 | #define elf_backend_fake_sections \ | |
4997 | elfNN_ia64_fake_sections | |
4998 | #define elf_backend_final_write_processing \ | |
4999 | elfNN_ia64_final_write_processing | |
5000 | #define elf_backend_add_symbol_hook \ | |
5001 | elfNN_ia64_add_symbol_hook | |
5002 | #define elf_backend_additional_program_headers \ | |
5003 | elfNN_ia64_additional_program_headers | |
5004 | #define elf_backend_modify_segment_map \ | |
5005 | elfNN_ia64_modify_segment_map | |
5006 | #define elf_backend_modify_program_headers \ | |
5007 | elfNN_ia64_modify_program_headers | |
5008 | #define elf_info_to_howto \ | |
5009 | elfNN_ia64_info_to_howto | |
5010 | ||
5011 | #define bfd_elfNN_bfd_reloc_type_lookup \ | |
5012 | ia64_elf_reloc_type_lookup | |
5013 | #define bfd_elfNN_bfd_reloc_name_lookup \ | |
5014 | ia64_elf_reloc_name_lookup | |
5015 | #define bfd_elfNN_bfd_is_local_label_name \ | |
5016 | elfNN_ia64_is_local_label_name | |
5017 | #define bfd_elfNN_bfd_relax_section \ | |
5018 | elfNN_ia64_relax_section | |
5019 | ||
5020 | #define elf_backend_object_p \ | |
5021 | elfNN_ia64_object_p | |
5022 | ||
5023 | /* Stuff for the BFD linker: */ | |
5024 | #define bfd_elfNN_bfd_link_hash_table_create \ | |
5025 | elfNN_ia64_hash_table_create | |
5026 | #define bfd_elfNN_bfd_link_hash_table_free \ | |
5027 | elfNN_ia64_hash_table_free | |
5028 | #define elf_backend_create_dynamic_sections \ | |
5029 | elfNN_ia64_create_dynamic_sections | |
5030 | #define elf_backend_check_relocs \ | |
5031 | elfNN_ia64_check_relocs | |
5032 | #define elf_backend_adjust_dynamic_symbol \ | |
5033 | elfNN_ia64_adjust_dynamic_symbol | |
5034 | #define elf_backend_size_dynamic_sections \ | |
5035 | elfNN_ia64_size_dynamic_sections | |
5036 | #define elf_backend_omit_section_dynsym \ | |
5037 | ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) | |
5038 | #define elf_backend_relocate_section \ | |
5039 | elfNN_ia64_relocate_section | |
5040 | #define elf_backend_finish_dynamic_symbol \ | |
5041 | elfNN_ia64_finish_dynamic_symbol | |
5042 | #define elf_backend_finish_dynamic_sections \ | |
5043 | elfNN_ia64_finish_dynamic_sections | |
5044 | #define bfd_elfNN_bfd_final_link \ | |
5045 | elfNN_ia64_final_link | |
5046 | ||
5047 | #define bfd_elfNN_bfd_merge_private_bfd_data \ | |
5048 | elfNN_ia64_merge_private_bfd_data | |
5049 | #define bfd_elfNN_bfd_set_private_flags \ | |
5050 | elfNN_ia64_set_private_flags | |
5051 | #define bfd_elfNN_bfd_print_private_bfd_data \ | |
5052 | elfNN_ia64_print_private_bfd_data | |
5053 | ||
5054 | #define elf_backend_plt_readonly 1 | |
5055 | #define elf_backend_want_plt_sym 0 | |
5056 | #define elf_backend_plt_alignment 5 | |
5057 | #define elf_backend_got_header_size 0 | |
5058 | #define elf_backend_want_got_plt 1 | |
5059 | #define elf_backend_may_use_rel_p 1 | |
5060 | #define elf_backend_may_use_rela_p 1 | |
5061 | #define elf_backend_default_use_rela_p 1 | |
5062 | #define elf_backend_want_dynbss 0 | |
5063 | #define elf_backend_copy_indirect_symbol elfNN_ia64_hash_copy_indirect | |
5064 | #define elf_backend_hide_symbol elfNN_ia64_hash_hide_symbol | |
5065 | #define elf_backend_fixup_symbol _bfd_elf_link_hash_fixup_symbol | |
5066 | #define elf_backend_reloc_type_class elfNN_ia64_reloc_type_class | |
5067 | #define elf_backend_rela_normal 1 | |
5068 | #define elf_backend_special_sections elfNN_ia64_special_sections | |
5069 | #define elf_backend_default_execstack 0 | |
5070 | ||
5071 | /* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with | |
5072 | SHF_LINK_ORDER. But it doesn't set the sh_link or sh_info fields. | |
5073 | We don't want to flood users with so many error messages. We turn | |
5074 | off the warning for now. It will be turned on later when the Intel | |
5075 | compiler is fixed. */ | |
5076 | #define elf_backend_link_order_error_handler NULL | |
5077 | ||
5078 | #include "elfNN-target.h" | |
5079 | ||
5080 | /* HPUX-specific vectors. */ | |
5081 | ||
5082 | #undef TARGET_LITTLE_SYM | |
5083 | #undef TARGET_LITTLE_NAME | |
5084 | #undef TARGET_BIG_SYM | |
5085 | #define TARGET_BIG_SYM bfd_elfNN_ia64_hpux_big_vec | |
5086 | #undef TARGET_BIG_NAME | |
5087 | #define TARGET_BIG_NAME "elfNN-ia64-hpux-big" | |
5088 | ||
5089 | /* These are HP-UX specific functions. */ | |
5090 | ||
5091 | #undef elf_backend_post_process_headers | |
5092 | #define elf_backend_post_process_headers elfNN_hpux_post_process_headers | |
5093 | ||
5094 | #undef elf_backend_section_from_bfd_section | |
5095 | #define elf_backend_section_from_bfd_section elfNN_hpux_backend_section_from_bfd_section | |
5096 | ||
5097 | #undef elf_backend_symbol_processing | |
5098 | #define elf_backend_symbol_processing elfNN_hpux_backend_symbol_processing | |
5099 | ||
5100 | #undef elf_backend_want_p_paddr_set_to_zero | |
5101 | #define elf_backend_want_p_paddr_set_to_zero 1 | |
5102 | ||
5103 | #undef ELF_COMMONPAGESIZE | |
5104 | #undef ELF_OSABI | |
5105 | #define ELF_OSABI ELFOSABI_HPUX | |
5106 | ||
5107 | #undef elfNN_bed | |
5108 | #define elfNN_bed elfNN_ia64_hpux_bed | |
5109 | ||
5110 | #include "elfNN-target.h" |