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252b5132 | 1 | /* ELF object file format |
d87bef3a | 2 | Copyright (C) 1992-2023 Free Software Foundation, Inc. |
252b5132 RH |
3 | |
4 | This file is part of GAS, the GNU Assembler. | |
5 | ||
6 | GAS is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as | |
ec2655a6 | 8 | published by the Free Software Foundation; either version 3, |
252b5132 RH |
9 | or (at your option) any later version. |
10 | ||
11 | GAS is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
14 | the GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GAS; see the file COPYING. If not, write to the Free | |
4b4da160 NC |
18 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
19 | 02110-1301, USA. */ | |
252b5132 RH |
20 | |
21 | #define OBJ_HEADER "obj-elf.h" | |
22 | #include "as.h" | |
3882b010 | 23 | #include "safe-ctype.h" |
252b5132 RH |
24 | #include "subsegs.h" |
25 | #include "obstack.h" | |
87ccc1b0 | 26 | #include "dwarf2dbg.h" |
252b5132 RH |
27 | |
28 | #ifndef ECOFF_DEBUGGING | |
29 | #define ECOFF_DEBUGGING 0 | |
30 | #else | |
31 | #define NEED_ECOFF_DEBUG | |
32 | #endif | |
33 | ||
34 | #ifdef NEED_ECOFF_DEBUG | |
35 | #include "ecoff.h" | |
0ba9378a | 36 | #include "bfd/ecoff-bfd.h" |
252b5132 RH |
37 | #endif |
38 | ||
39 | #ifdef TC_ALPHA | |
40 | #include "elf/alpha.h" | |
41 | #endif | |
42 | ||
43 | #ifdef TC_MIPS | |
44 | #include "elf/mips.h" | |
45 | #endif | |
46 | ||
47 | #ifdef TC_PPC | |
48 | #include "elf/ppc.h" | |
49 | #endif | |
50 | ||
3b22753a L |
51 | #ifdef TC_I386 |
52 | #include "elf/x86-64.h" | |
53 | #endif | |
54 | ||
280d71bf DB |
55 | #ifdef TC_MEP |
56 | #include "elf/mep.h" | |
57 | #endif | |
58 | ||
36591ba1 SL |
59 | #ifdef TC_NIOS2 |
60 | #include "elf/nios2.h" | |
61 | #endif | |
62 | ||
93f11b16 DD |
63 | #ifdef TC_PRU |
64 | #include "elf/pru.h" | |
65 | #endif | |
66 | ||
dbe2df79 AM |
67 | static void obj_elf_line (int); |
68 | static void obj_elf_size (int); | |
69 | static void obj_elf_type (int); | |
70 | static void obj_elf_ident (int); | |
71 | static void obj_elf_weak (int); | |
72 | static void obj_elf_local (int); | |
73 | static void obj_elf_visibility (int); | |
74 | static void obj_elf_symver (int); | |
75 | static void obj_elf_subsection (int); | |
76 | static void obj_elf_popsection (int); | |
0420f52b | 77 | static void obj_elf_gnu_attribute (int); |
dbe2df79 | 78 | static void obj_elf_tls_common (int); |
13c56984 | 79 | static void obj_elf_lcomm (int); |
8fe53b44 | 80 | static void obj_elf_struct (int); |
642f545a | 81 | static void obj_elf_attach_to_group (int); |
252b5132 RH |
82 | |
83 | static const pseudo_typeS elf_pseudo_table[] = | |
84 | { | |
642f545a | 85 | {"attach_to_group", obj_elf_attach_to_group, 0}, |
252b5132 | 86 | {"comm", obj_elf_common, 0}, |
9be1cda6 | 87 | {"common", obj_elf_common, 1}, |
252b5132 | 88 | {"ident", obj_elf_ident, 0}, |
13c56984 | 89 | {"lcomm", obj_elf_lcomm, 0}, |
252b5132 RH |
90 | {"local", obj_elf_local, 0}, |
91 | {"previous", obj_elf_previous, 0}, | |
92 | {"section", obj_elf_section, 0}, | |
93 | {"section.s", obj_elf_section, 0}, | |
94 | {"sect", obj_elf_section, 0}, | |
95 | {"sect.s", obj_elf_section, 0}, | |
9de8d8f1 RH |
96 | {"pushsection", obj_elf_section, 1}, |
97 | {"popsection", obj_elf_popsection, 0}, | |
252b5132 RH |
98 | {"size", obj_elf_size, 0}, |
99 | {"type", obj_elf_type, 0}, | |
100 | {"version", obj_elf_version, 0}, | |
101 | {"weak", obj_elf_weak, 0}, | |
102 | ||
bf514e21 | 103 | /* These define symbol visibility. */ |
2e13b764 NC |
104 | {"internal", obj_elf_visibility, STV_INTERNAL}, |
105 | {"hidden", obj_elf_visibility, STV_HIDDEN}, | |
106 | {"protected", obj_elf_visibility, STV_PROTECTED}, | |
107 | ||
252b5132 RH |
108 | /* These are used for stabs-in-elf configurations. */ |
109 | {"line", obj_elf_line, 0}, | |
110 | ||
111 | /* This is a GNU extension to handle symbol versions. */ | |
112 | {"symver", obj_elf_symver, 0}, | |
113 | ||
114 | /* A GNU extension to change subsection only. */ | |
115 | {"subsection", obj_elf_subsection, 0}, | |
116 | ||
117 | /* These are GNU extensions to aid in garbage collecting C++ vtables. */ | |
68d20676 NC |
118 | {"vtable_inherit", obj_elf_vtable_inherit, 0}, |
119 | {"vtable_entry", obj_elf_vtable_entry, 0}, | |
252b5132 | 120 | |
0420f52b MR |
121 | /* A GNU extension for object attributes. */ |
122 | {"gnu_attribute", obj_elf_gnu_attribute, 0}, | |
123 | ||
87ccc1b0 | 124 | /* These are used for dwarf2. */ |
68d20676 | 125 | { "file", dwarf2_directive_file, 0 }, |
87ccc1b0 | 126 | { "loc", dwarf2_directive_loc, 0 }, |
07a53e5c | 127 | { "loc_mark_labels", dwarf2_directive_loc_mark_labels, 0 }, |
252b5132 RH |
128 | |
129 | /* We need to trap the section changing calls to handle .previous. */ | |
130 | {"data", obj_elf_data, 0}, | |
8fe53b44 JB |
131 | {"offset", obj_elf_struct, 0}, |
132 | {"struct", obj_elf_struct, 0}, | |
252b5132 | 133 | {"text", obj_elf_text, 0}, |
476654be | 134 | {"bss", obj_elf_bss, 0}, |
252b5132 | 135 | |
13ae64f3 JJ |
136 | {"tls_common", obj_elf_tls_common, 0}, |
137 | ||
252b5132 | 138 | /* End sentinel. */ |
ab9da554 | 139 | {NULL, NULL, 0}, |
252b5132 RH |
140 | }; |
141 | ||
142 | static const pseudo_typeS ecoff_debug_pseudo_table[] = | |
143 | { | |
144 | #ifdef NEED_ECOFF_DEBUG | |
145 | /* COFF style debugging information for ECOFF. .ln is not used; .loc | |
146 | is used instead. */ | |
147 | { "def", ecoff_directive_def, 0 }, | |
148 | { "dim", ecoff_directive_dim, 0 }, | |
149 | { "endef", ecoff_directive_endef, 0 }, | |
150 | { "file", ecoff_directive_file, 0 }, | |
151 | { "scl", ecoff_directive_scl, 0 }, | |
152 | { "tag", ecoff_directive_tag, 0 }, | |
153 | { "val", ecoff_directive_val, 0 }, | |
154 | ||
155 | /* COFF debugging requires pseudo-ops .size and .type, but ELF | |
156 | already has meanings for those. We use .esize and .etype | |
157 | instead. These are only generated by gcc anyhow. */ | |
158 | { "esize", ecoff_directive_size, 0 }, | |
159 | { "etype", ecoff_directive_type, 0 }, | |
160 | ||
161 | /* ECOFF specific debugging information. */ | |
37f9ec62 | 162 | { "aent", ecoff_directive_ent, 1 }, |
252b5132 RH |
163 | { "begin", ecoff_directive_begin, 0 }, |
164 | { "bend", ecoff_directive_bend, 0 }, | |
165 | { "end", ecoff_directive_end, 0 }, | |
166 | { "ent", ecoff_directive_ent, 0 }, | |
167 | { "fmask", ecoff_directive_fmask, 0 }, | |
168 | { "frame", ecoff_directive_frame, 0 }, | |
169 | { "loc", ecoff_directive_loc, 0 }, | |
170 | { "mask", ecoff_directive_mask, 0 }, | |
171 | ||
172 | /* Other ECOFF directives. */ | |
173 | { "extern", ecoff_directive_extern, 0 }, | |
174 | ||
175 | /* These are used on Irix. I don't know how to implement them. */ | |
176 | { "alias", s_ignore, 0 }, | |
177 | { "bgnb", s_ignore, 0 }, | |
178 | { "endb", s_ignore, 0 }, | |
179 | { "lab", s_ignore, 0 }, | |
180 | { "noalias", s_ignore, 0 }, | |
181 | { "verstamp", s_ignore, 0 }, | |
182 | { "vreg", s_ignore, 0 }, | |
183 | #endif | |
184 | ||
ab9da554 | 185 | {NULL, NULL, 0} /* end sentinel */ |
252b5132 RH |
186 | }; |
187 | ||
188 | #undef NO_RELOC | |
189 | #include "aout/aout64.h" | |
190 | ||
3b22753a L |
191 | asection *elf_com_section_ptr; |
192 | ||
252b5132 | 193 | void |
dbe2df79 | 194 | elf_pop_insert (void) |
252b5132 RH |
195 | { |
196 | pop_insert (elf_pseudo_table); | |
197 | if (ECOFF_DEBUGGING) | |
198 | pop_insert (ecoff_debug_pseudo_table); | |
199 | } | |
200 | ||
201 | static bfd_vma | |
dbe2df79 | 202 | elf_s_get_size (symbolS *sym) |
252b5132 RH |
203 | { |
204 | return S_GET_SIZE (sym); | |
205 | } | |
206 | ||
207 | static void | |
dbe2df79 | 208 | elf_s_set_size (symbolS *sym, bfd_vma sz) |
252b5132 RH |
209 | { |
210 | S_SET_SIZE (sym, sz); | |
211 | } | |
212 | ||
213 | static bfd_vma | |
dbe2df79 | 214 | elf_s_get_align (symbolS *sym) |
252b5132 RH |
215 | { |
216 | return S_GET_ALIGN (sym); | |
217 | } | |
218 | ||
219 | static void | |
dbe2df79 | 220 | elf_s_set_align (symbolS *sym, bfd_vma align) |
252b5132 RH |
221 | { |
222 | S_SET_ALIGN (sym, align); | |
223 | } | |
224 | ||
4c63da97 | 225 | int |
dbe2df79 | 226 | elf_s_get_other (symbolS *sym) |
4c63da97 AM |
227 | { |
228 | return elf_symbol (symbol_get_bfdsym (sym))->internal_elf_sym.st_other; | |
229 | } | |
230 | ||
5110c57e | 231 | static void |
dbe2df79 | 232 | elf_s_set_other (symbolS *sym, int other) |
5110c57e HPN |
233 | { |
234 | S_SET_OTHER (sym, other); | |
235 | } | |
236 | ||
252b5132 | 237 | static int |
dbe2df79 | 238 | elf_sec_sym_ok_for_reloc (asection *sec) |
252b5132 RH |
239 | { |
240 | return obj_sec_sym_ok_for_reloc (sec); | |
241 | } | |
242 | ||
243 | void | |
c39e89c3 | 244 | elf_file_symbol (const char *s) |
252b5132 | 245 | { |
8d1015a8 | 246 | asymbol *bsym; |
c39e89c3 JB |
247 | symbolS *sym = symbol_new (s, absolute_section, &zero_address_frag, 0); |
248 | size_t name_length = strlen (s); | |
8d1015a8 | 249 | |
c39e89c3 | 250 | if (name_length > strlen (S_GET_NAME (sym))) |
c04f5787 | 251 | { |
c39e89c3 JB |
252 | obstack_grow (¬es, s, name_length + 1); |
253 | S_SET_NAME (sym, (const char *) obstack_finish (¬es)); | |
254 | } | |
255 | else | |
256 | strcpy ((char *) S_GET_NAME (sym), s); | |
efa19bfd | 257 | |
c39e89c3 | 258 | symbol_get_bfdsym (sym)->flags |= BSF_FILE; |
252b5132 | 259 | |
c39e89c3 JB |
260 | if (symbol_rootP != sym |
261 | && ((bsym = symbol_get_bfdsym (symbol_rootP)) == NULL | |
262 | || (bsym->flags & BSF_FILE) == 0)) | |
263 | { | |
264 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); | |
265 | symbol_insert (sym, symbol_rootP, &symbol_rootP, &symbol_lastP); | |
266 | } | |
fbdf9406 | 267 | |
252b5132 | 268 | #ifdef DEBUG |
c39e89c3 | 269 | verify_symbol_chain (symbol_rootP, symbol_lastP); |
252b5132 | 270 | #endif |
252b5132 RH |
271 | |
272 | #ifdef NEED_ECOFF_DEBUG | |
c39e89c3 | 273 | ecoff_new_file (s); |
252b5132 RH |
274 | #endif |
275 | } | |
276 | ||
e13bab5a AM |
277 | /* Called from read.c:s_comm after we've parsed .comm symbol, size. |
278 | Parse a possible alignment value. */ | |
279 | ||
3b22753a | 280 | symbolS * |
e13bab5a | 281 | elf_common_parse (int ignore ATTRIBUTE_UNUSED, symbolS *symbolP, addressT size) |
252b5132 | 282 | { |
e13bab5a AM |
283 | addressT align = 0; |
284 | int is_local = symbol_get_obj (symbolP)->local; | |
252b5132 | 285 | |
e13bab5a | 286 | if (*input_line_pointer == ',') |
9be1cda6 | 287 | { |
e13bab5a | 288 | char *save = input_line_pointer; |
9be1cda6 | 289 | |
252b5132 RH |
290 | input_line_pointer++; |
291 | SKIP_WHITESPACE (); | |
e13bab5a AM |
292 | |
293 | if (*input_line_pointer == '"') | |
252b5132 | 294 | { |
e13bab5a AM |
295 | /* For sparc. Accept .common symbol, length, "bss" */ |
296 | input_line_pointer++; | |
297 | /* Some use the dot, some don't. */ | |
298 | if (*input_line_pointer == '.') | |
299 | input_line_pointer++; | |
300 | /* Some say data, some say bss. */ | |
d34049e8 | 301 | if (startswith (input_line_pointer, "bss\"")) |
e13bab5a | 302 | input_line_pointer += 4; |
d34049e8 | 303 | else if (startswith (input_line_pointer, "data\"")) |
e13bab5a AM |
304 | input_line_pointer += 5; |
305 | else | |
252b5132 | 306 | { |
e13bab5a AM |
307 | char *p = input_line_pointer; |
308 | char c; | |
309 | ||
310 | while (*--p != '"') | |
311 | ; | |
312 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
313 | if (*input_line_pointer++ == '"') | |
314 | break; | |
315 | c = *input_line_pointer; | |
316 | *input_line_pointer = '\0'; | |
317 | as_bad (_("bad .common segment %s"), p); | |
318 | *input_line_pointer = c; | |
319 | ignore_rest_of_line (); | |
320 | return NULL; | |
252b5132 | 321 | } |
e13bab5a AM |
322 | /* ??? Don't ask me why these are always global. */ |
323 | is_local = 0; | |
252b5132 RH |
324 | } |
325 | else | |
326 | { | |
e13bab5a AM |
327 | input_line_pointer = save; |
328 | align = parse_align (is_local); | |
329 | if (align == (addressT) -1) | |
330 | return NULL; | |
252b5132 RH |
331 | } |
332 | } | |
e13bab5a AM |
333 | |
334 | if (is_local) | |
335 | { | |
336 | bss_alloc (symbolP, size, align); | |
337 | S_CLEAR_EXTERNAL (symbolP); | |
338 | } | |
252b5132 RH |
339 | else |
340 | { | |
e13bab5a AM |
341 | S_SET_VALUE (symbolP, size); |
342 | S_SET_ALIGN (symbolP, align); | |
343 | S_SET_EXTERNAL (symbolP); | |
3b22753a | 344 | S_SET_SEGMENT (symbolP, elf_com_section_ptr); |
252b5132 RH |
345 | } |
346 | ||
49309057 | 347 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; |
252b5132 | 348 | |
13ae64f3 | 349 | return symbolP; |
252b5132 RH |
350 | } |
351 | ||
13ae64f3 | 352 | void |
dbe2df79 | 353 | obj_elf_common (int is_common) |
13ae64f3 | 354 | { |
e13bab5a AM |
355 | if (flag_mri && is_common) |
356 | s_mri_common (0); | |
357 | else | |
358 | s_comm_internal (0, elf_common_parse); | |
13ae64f3 JJ |
359 | } |
360 | ||
361 | static void | |
dbe2df79 | 362 | obj_elf_tls_common (int ignore ATTRIBUTE_UNUSED) |
13ae64f3 | 363 | { |
e13bab5a | 364 | symbolS *symbolP = s_comm_internal (0, elf_common_parse); |
13ae64f3 JJ |
365 | |
366 | if (symbolP) | |
367 | symbol_get_bfdsym (symbolP)->flags |= BSF_THREAD_LOCAL; | |
368 | } | |
369 | ||
13c56984 AM |
370 | static void |
371 | obj_elf_lcomm (int ignore ATTRIBUTE_UNUSED) | |
372 | { | |
373 | symbolS *symbolP = s_comm_internal (0, s_lcomm_internal); | |
374 | ||
375 | if (symbolP) | |
376 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; | |
377 | } | |
378 | ||
6e8bd58f NS |
379 | static symbolS * |
380 | get_sym_from_input_line_and_check (void) | |
381 | { | |
382 | char *name; | |
383 | char c; | |
384 | symbolS *sym; | |
385 | ||
d02603dc | 386 | c = get_symbol_name (& name); |
6e8bd58f NS |
387 | sym = symbol_find_or_make (name); |
388 | *input_line_pointer = c; | |
d02603dc | 389 | SKIP_WHITESPACE_AFTER_NAME (); |
6e8bd58f NS |
390 | |
391 | /* There is no symbol name if input_line_pointer has not moved. */ | |
392 | if (name == input_line_pointer) | |
393 | as_bad (_("Missing symbol name in directive")); | |
394 | return sym; | |
395 | } | |
396 | ||
252b5132 | 397 | static void |
dbe2df79 | 398 | obj_elf_local (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 399 | { |
252b5132 RH |
400 | int c; |
401 | symbolS *symbolP; | |
402 | ||
403 | do | |
404 | { | |
01642c12 | 405 | symbolP = get_sym_from_input_line_and_check (); |
6e8bd58f | 406 | c = *input_line_pointer; |
252b5132 | 407 | S_CLEAR_EXTERNAL (symbolP); |
49309057 | 408 | symbol_get_obj (symbolP)->local = 1; |
252b5132 RH |
409 | if (c == ',') |
410 | { | |
411 | input_line_pointer++; | |
412 | SKIP_WHITESPACE (); | |
413 | if (*input_line_pointer == '\n') | |
414 | c = '\n'; | |
415 | } | |
416 | } | |
417 | while (c == ','); | |
418 | demand_empty_rest_of_line (); | |
419 | } | |
420 | ||
421 | static void | |
dbe2df79 | 422 | obj_elf_weak (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 423 | { |
252b5132 RH |
424 | int c; |
425 | symbolS *symbolP; | |
426 | ||
427 | do | |
428 | { | |
01642c12 | 429 | symbolP = get_sym_from_input_line_and_check (); |
6e8bd58f | 430 | c = *input_line_pointer; |
252b5132 | 431 | S_SET_WEAK (symbolP); |
252b5132 RH |
432 | if (c == ',') |
433 | { | |
434 | input_line_pointer++; | |
435 | SKIP_WHITESPACE (); | |
436 | if (*input_line_pointer == '\n') | |
437 | c = '\n'; | |
438 | } | |
439 | } | |
440 | while (c == ','); | |
441 | demand_empty_rest_of_line (); | |
442 | } | |
443 | ||
2e13b764 | 444 | static void |
dbe2df79 | 445 | obj_elf_visibility (int visibility) |
2e13b764 | 446 | { |
2e13b764 NC |
447 | int c; |
448 | symbolS *symbolP; | |
449 | asymbol *bfdsym; | |
450 | elf_symbol_type *elfsym; | |
451 | ||
452 | do | |
453 | { | |
6e8bd58f | 454 | symbolP = get_sym_from_input_line_and_check (); |
fa306131 | 455 | |
2e13b764 | 456 | bfdsym = symbol_get_bfdsym (symbolP); |
c1229f84 | 457 | elfsym = elf_symbol_from (bfdsym); |
fa306131 | 458 | |
9c2799c2 | 459 | gas_assert (elfsym); |
fa306131 | 460 | |
20e420c2 RH |
461 | elfsym->internal_elf_sym.st_other &= ~3; |
462 | elfsym->internal_elf_sym.st_other |= visibility; | |
fa306131 | 463 | |
6e8bd58f | 464 | c = *input_line_pointer; |
2e13b764 NC |
465 | if (c == ',') |
466 | { | |
467 | input_line_pointer ++; | |
fa306131 | 468 | |
2e13b764 | 469 | SKIP_WHITESPACE (); |
fa306131 | 470 | |
2e13b764 NC |
471 | if (*input_line_pointer == '\n') |
472 | c = '\n'; | |
473 | } | |
474 | } | |
475 | while (c == ','); | |
fa306131 | 476 | |
2e13b764 NC |
477 | demand_empty_rest_of_line (); |
478 | } | |
479 | ||
252b5132 RH |
480 | static segT previous_section; |
481 | static int previous_subsection; | |
482 | ||
9de8d8f1 RH |
483 | struct section_stack |
484 | { | |
485 | struct section_stack *next; | |
486 | segT seg, prev_seg; | |
487 | int subseg, prev_subseg; | |
488 | }; | |
489 | ||
490 | static struct section_stack *section_stack; | |
491 | ||
037311d1 L |
492 | /* ELF section flags for unique sections. */ |
493 | #define SEC_ASSEMBLER_SHF_MASK SHF_GNU_RETAIN | |
494 | ||
b71702f1 NC |
495 | /* Return TRUE iff SEC matches the section info INF. */ |
496 | ||
5b7c81bd | 497 | static bool |
b71702f1 | 498 | get_section_by_match (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *inf) |
86654c12 | 499 | { |
a8c4d40b | 500 | struct elf_section_match *match = (struct elf_section_match *) inf; |
a91e1603 | 501 | const char *gname = match->group_name; |
86654c12 | 502 | const char *group_name = elf_group_name (sec); |
b7d07216 L |
503 | const char *linked_to_symbol_name |
504 | = sec->map_head.linked_to_symbol_name; | |
037311d1 L |
505 | unsigned int sh_info = elf_section_data (sec)->this_hdr.sh_info; |
506 | bfd_vma sh_flags = (elf_section_data (sec)->this_hdr.sh_flags | |
507 | & SEC_ASSEMBLER_SHF_MASK); | |
01fb1836 | 508 | |
037311d1 L |
509 | return (sh_info == match->sh_info |
510 | && sh_flags == match->sh_flags | |
a8c4d40b L |
511 | && ((bfd_section_flags (sec) & SEC_ASSEMBLER_SECTION_ID) |
512 | == (match->flags & SEC_ASSEMBLER_SECTION_ID)) | |
513 | && sec->section_id == match->section_id | |
a91e1603 L |
514 | && (group_name == gname |
515 | || (group_name != NULL | |
516 | && gname != NULL | |
b7d07216 L |
517 | && strcmp (group_name, gname) == 0)) |
518 | && (linked_to_symbol_name == match->linked_to_symbol_name | |
519 | || (linked_to_symbol_name != NULL | |
520 | && match->linked_to_symbol_name != NULL | |
521 | && strcmp (linked_to_symbol_name, | |
522 | match->linked_to_symbol_name) == 0))); | |
86654c12 L |
523 | } |
524 | ||
252b5132 RH |
525 | /* Handle the .section pseudo-op. This code supports two different |
526 | syntaxes. | |
527 | ||
528 | The first is found on Solaris, and looks like | |
529 | .section ".sec1",#alloc,#execinstr,#write | |
530 | Here the names after '#' are the SHF_* flags to turn on for the | |
531 | section. I'm not sure how it determines the SHT_* type (BFD | |
532 | doesn't really give us control over the type, anyhow). | |
533 | ||
534 | The second format is found on UnixWare, and probably most SVR4 | |
535 | machines, and looks like | |
536 | .section .sec1,"a",@progbits | |
537 | The quoted string may contain any combination of a, w, x, and | |
538 | represents the SHF_* flags to turn on for the section. The string | |
539 | beginning with '@' can be progbits or nobits. There should be | |
540 | other possibilities, but I don't know what they are. In any case, | |
541 | BFD doesn't really let us set the section type. */ | |
542 | ||
cca86cc8 | 543 | void |
dbe2df79 | 544 | obj_elf_change_section (const char *name, |
9fb71ee4 | 545 | unsigned int type, |
01e1a5bc | 546 | bfd_vma attr, |
dbe2df79 | 547 | int entsize, |
a8c4d40b | 548 | struct elf_section_match *match_p, |
dbe2df79 AM |
549 | int linkonce, |
550 | int push) | |
252b5132 | 551 | { |
fafe6678 | 552 | asection *old_sec; |
252b5132 | 553 | segT sec; |
742f45cf | 554 | flagword flags; |
551b43fd | 555 | const struct elf_backend_data *bed; |
f61e8019 | 556 | const struct bfd_elf_special_section *ssect; |
a8c4d40b L |
557 | |
558 | if (match_p == NULL) | |
559 | { | |
560 | static struct elf_section_match unused_match; | |
561 | match_p = &unused_match; | |
562 | } | |
252b5132 RH |
563 | |
564 | #ifdef md_flush_pending_output | |
565 | md_flush_pending_output (); | |
566 | #endif | |
567 | ||
9de8d8f1 RH |
568 | /* Switch to the section, creating it if necessary. */ |
569 | if (push) | |
570 | { | |
571 | struct section_stack *elt; | |
325801bd | 572 | elt = XNEW (struct section_stack); |
9de8d8f1 RH |
573 | elt->next = section_stack; |
574 | elt->seg = now_seg; | |
575 | elt->prev_seg = previous_section; | |
576 | elt->subseg = now_subseg; | |
577 | elt->prev_subseg = previous_subsection; | |
578 | section_stack = elt; | |
579 | } | |
476654be NC |
580 | |
581 | obj_elf_section_change_hook (); | |
9de8d8f1 | 582 | |
b71702f1 | 583 | old_sec = bfd_get_section_by_name_if (stdoutput, name, get_section_by_match, |
a8c4d40b | 584 | (void *) match_p); |
fafe6678 | 585 | if (old_sec) |
86654c12 | 586 | { |
fafe6678 | 587 | sec = old_sec; |
86654c12 L |
588 | subseg_set (sec, 0); |
589 | } | |
590 | else | |
591 | sec = subseg_force_new (name, 0); | |
592 | ||
551b43fd AM |
593 | bed = get_elf_backend_data (stdoutput); |
594 | ssect = (*bed->get_sec_type_attr) (stdoutput, sec); | |
9de8d8f1 | 595 | |
f61e8019 | 596 | if (ssect != NULL) |
2f89ff8d | 597 | { |
5b7c81bd | 598 | bool override = false; |
ea8f8eab | 599 | |
2f89ff8d | 600 | if (type == SHT_NULL) |
f61e8019 AM |
601 | type = ssect->type; |
602 | else if (type != ssect->type) | |
2f89ff8d | 603 | { |
fafe6678 | 604 | if (old_sec == NULL |
23ddb850 | 605 | /* Some older versions of gcc will emit |
7ed1d346 | 606 | |
2f89ff8d | 607 | .section .init_array,"aw",@progbits |
7ed1d346 | 608 | |
2f89ff8d | 609 | for __attribute__ ((section (".init_array"))). |
3b22753a | 610 | "@progbits" is incorrect. Also for x86-64 large bss |
23ddb850 | 611 | sections, some older versions of gcc will emit |
3b22753a L |
612 | |
613 | .section .lbss,"aw",@progbits | |
614 | ||
2f89ff8d | 615 | "@progbits" is incorrect. */ |
3b22753a L |
616 | #ifdef TC_I386 |
617 | && (bed->s->arch_size != 64 | |
618 | || !(ssect->attr & SHF_X86_64_LARGE)) | |
619 | #endif | |
f61e8019 AM |
620 | && ssect->type != SHT_INIT_ARRAY |
621 | && ssect->type != SHT_FINI_ARRAY | |
622 | && ssect->type != SHT_PREINIT_ARRAY) | |
2f89ff8d L |
623 | { |
624 | /* We allow to specify any type for a .note section. */ | |
9fb71ee4 NC |
625 | if (ssect->type != SHT_NOTE |
626 | /* Processor and application defined types are allowed too. */ | |
627 | && type < SHT_LOPROC) | |
2f89ff8d L |
628 | as_warn (_("setting incorrect section type for %s"), |
629 | name); | |
630 | } | |
631 | else | |
632 | { | |
633 | as_warn (_("ignoring incorrect section type for %s"), | |
742f45cf | 634 | name); |
f61e8019 | 635 | type = ssect->type; |
2f89ff8d L |
636 | } |
637 | } | |
638 | ||
cd6d537c L |
639 | if (old_sec == NULL && ((attr & ~(SHF_LINK_ORDER |
640 | | SHF_MASKOS | |
641 | | SHF_MASKPROC)) | |
9fb71ee4 | 642 | & ~ssect->attr) != 0) |
2f89ff8d | 643 | { |
ca1289b9 L |
644 | /* Strip SHF_GNU_RETAIN. */ |
645 | bfd_vma generic_attr = attr; | |
646 | if (elf_tdata (stdoutput)->has_gnu_osabi) | |
647 | generic_attr &= ~SHF_GNU_RETAIN; | |
648 | ||
2f89ff8d | 649 | /* As a GNU extension, we permit a .note section to be |
f61e8019 | 650 | allocatable. If the linker sees an allocatable .note |
2f89ff8d | 651 | section, it will create a PT_NOTE segment in the output |
92191b29 | 652 | file. We also allow "x" for .note.GNU-stack. */ |
f61e8019 | 653 | if (ssect->type == SHT_NOTE |
ca1289b9 L |
654 | && (generic_attr == SHF_ALLOC |
655 | || generic_attr == SHF_EXECINSTR)) | |
f61e8019 AM |
656 | ; |
657 | /* Allow different SHF_MERGE and SHF_STRINGS if we have | |
658 | something like .rodata.str. */ | |
659 | else if (ssect->suffix_length == -2 | |
660 | && name[ssect->prefix_length] == '.' | |
ca1289b9 | 661 | && (generic_attr |
ea8f8eab L |
662 | & ~ssect->attr |
663 | & ~SHF_MERGE | |
664 | & ~SHF_STRINGS) == 0) | |
f61e8019 | 665 | ; |
ea8f8eab | 666 | /* .interp, .strtab and .symtab can have SHF_ALLOC. */ |
ca1289b9 | 667 | else if (generic_attr == SHF_ALLOC |
ea8f8eab L |
668 | && (strcmp (name, ".interp") == 0 |
669 | || strcmp (name, ".strtab") == 0 | |
670 | || strcmp (name, ".symtab") == 0)) | |
5b7c81bd | 671 | override = true; |
b9f18452 | 672 | /* .note.GNU-stack can have SHF_EXECINSTR. */ |
ca1289b9 | 673 | else if (generic_attr == SHF_EXECINSTR |
b9f18452 | 674 | && strcmp (name, ".note.GNU-stack") == 0) |
5b7c81bd | 675 | override = true; |
7f841127 L |
676 | #ifdef TC_ALPHA |
677 | /* A section on Alpha may have SHF_ALPHA_GPREL. */ | |
ca1289b9 | 678 | else if ((generic_attr & ~ssect->attr) == SHF_ALPHA_GPREL) |
5b7c81bd | 679 | override = true; |
708e2187 NC |
680 | #endif |
681 | #ifdef TC_RX | |
ca1289b9 | 682 | else if (generic_attr == (SHF_EXECINSTR | SHF_WRITE | SHF_ALLOC) |
708e2187 NC |
683 | && (ssect->type == SHT_INIT_ARRAY |
684 | || ssect->type == SHT_FINI_ARRAY | |
685 | || ssect->type == SHT_PREINIT_ARRAY)) | |
686 | /* RX init/fini arrays can and should have the "awx" attributes set. */ | |
687 | ; | |
7f841127 | 688 | #endif |
f61e8019 | 689 | else |
ea8f8eab | 690 | { |
a8c4d40b | 691 | if (match_p->group_name == NULL) |
86654c12 L |
692 | as_warn (_("setting incorrect section attributes for %s"), |
693 | name); | |
5b7c81bd | 694 | override = true; |
ea8f8eab | 695 | } |
2f89ff8d | 696 | } |
9fb71ee4 | 697 | |
fafe6678 | 698 | if (!override && old_sec == NULL) |
f61e8019 | 699 | attr |= ssect->attr; |
2f89ff8d | 700 | } |
742f45cf AM |
701 | |
702 | /* Convert ELF type and flags to BFD flags. */ | |
703 | flags = (SEC_RELOC | |
704 | | ((attr & SHF_WRITE) ? 0 : SEC_READONLY) | |
705 | | ((attr & SHF_ALLOC) ? SEC_ALLOC : 0) | |
706 | | (((attr & SHF_ALLOC) && type != SHT_NOBITS) ? SEC_LOAD : 0) | |
f5fa8ca2 JJ |
707 | | ((attr & SHF_EXECINSTR) ? SEC_CODE : 0) |
708 | | ((attr & SHF_MERGE) ? SEC_MERGE : 0) | |
13ae64f3 | 709 | | ((attr & SHF_STRINGS) ? SEC_STRINGS : 0) |
18ae9cc1 | 710 | | ((attr & SHF_EXCLUDE) ? SEC_EXCLUDE: 0) |
13ae64f3 | 711 | | ((attr & SHF_TLS) ? SEC_THREAD_LOCAL : 0)); |
9de8d8f1 | 712 | #ifdef md_elf_section_flags |
742f45cf | 713 | flags = md_elf_section_flags (flags, attr, type); |
9de8d8f1 RH |
714 | #endif |
715 | ||
86654c12 L |
716 | if (linkonce) |
717 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
718 | ||
ef744040 T |
719 | /* PR 28054: Set the SEC_ELF_OCTETS flag for debugging sections. |
720 | Based on the code in bfd/elf.c:_bfd_elf_make_section_from_shdr(). | |
721 | ||
722 | FIXME: We do not set the SEC_DEBUGGING flag because that causes | |
723 | problems for the FT32 and MSP430 targets. Investigate and fix. */ | |
724 | if ((flags & SEC_ALLOC) == 0 && name [0] == '.') | |
725 | { | |
726 | if ( startswith (name, ".debug") | |
727 | || startswith (name, ".zdebug") | |
728 | || startswith (name, ".gnu.debuglto_.debug_") | |
729 | || startswith (name, ".gnu.linkonce.wi.") | |
730 | || startswith (name, GNU_BUILD_ATTRS_SECTION_NAME) | |
731 | || startswith (name, ".note.gnu")) | |
732 | flags |= SEC_ELF_OCTETS; | |
733 | } | |
734 | ||
fafe6678 | 735 | if (old_sec == NULL) |
742f45cf AM |
736 | { |
737 | symbolS *secsym; | |
738 | ||
94be91de JB |
739 | if (type == SHT_NULL) |
740 | type = bfd_elf_get_default_section_type (flags); | |
7a6d0b32 JB |
741 | elf_section_type (sec) = type; |
742 | elf_section_flags (sec) = attr; | |
037311d1 | 743 | elf_section_data (sec)->this_hdr.sh_info = match_p->sh_info; |
7a6d0b32 | 744 | |
9de8d8f1 RH |
745 | /* Prevent SEC_HAS_CONTENTS from being inadvertently set. */ |
746 | if (type == SHT_NOBITS) | |
13c56984 | 747 | seg_info (sec)->bss = 1; |
9de8d8f1 | 748 | |
a8c4d40b L |
749 | /* Set the section ID and flags. */ |
750 | sec->section_id = match_p->section_id; | |
751 | flags |= match_p->flags; | |
752 | ||
b7d07216 L |
753 | /* Set the linked-to symbol name. */ |
754 | sec->map_head.linked_to_symbol_name | |
755 | = match_p->linked_to_symbol_name; | |
756 | ||
fd361982 | 757 | bfd_set_section_flags (sec, flags); |
f5fa8ca2 JJ |
758 | if (flags & SEC_MERGE) |
759 | sec->entsize = entsize; | |
a8c4d40b | 760 | elf_group_name (sec) = match_p->group_name; |
9de8d8f1 RH |
761 | |
762 | /* Add a symbol for this section to the symbol table. */ | |
763 | secsym = symbol_find (name); | |
764 | if (secsym != NULL) | |
d4d05d13 AC |
765 | { |
766 | /* We could be repurposing an undefined symbol here: make sure we | |
767 | reset sy_value to look like other section symbols in order to avoid | |
768 | trying to incorrectly resolve this section symbol later on. */ | |
e37c930f AM |
769 | static const expressionS exp = { .X_op = O_constant }; |
770 | symbol_set_value_expression (secsym, &exp); | |
d4d05d13 AC |
771 | symbol_set_bfdsym (secsym, sec->symbol); |
772 | } | |
9de8d8f1 | 773 | else |
13c56984 | 774 | symbol_table_insert (section_symbol (sec)); |
9de8d8f1 | 775 | } |
7a6d0b32 | 776 | else |
742f45cf | 777 | { |
7a6d0b32 JB |
778 | if (type != SHT_NULL |
779 | && (unsigned) type != elf_section_type (old_sec)) | |
33176d91 AM |
780 | { |
781 | if (ssect != NULL) | |
782 | /* This is a special section with known type. User | |
783 | assembly might get the section type wrong; Even high | |
784 | profile projects like glibc have done so in the past. | |
785 | So don't error in this case. */ | |
786 | as_warn (_("ignoring changed section type for %s"), name); | |
787 | else | |
788 | /* Do error when assembly isn't self-consistent. */ | |
789 | as_bad (_("changed section type for %s"), name); | |
790 | } | |
7a6d0b32 JB |
791 | |
792 | if (attr != 0) | |
793 | { | |
794 | /* If section attributes are specified the second time we see a | |
795 | particular section, then check that they are the same as we | |
796 | saw the first time. */ | |
797 | if (((old_sec->flags ^ flags) | |
798 | & (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE | |
799 | | SEC_EXCLUDE | SEC_SORT_ENTRIES | SEC_MERGE | SEC_STRINGS | |
800 | | SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD | |
801 | | SEC_THREAD_LOCAL))) | |
33176d91 AM |
802 | { |
803 | if (ssect != NULL) | |
804 | as_warn (_("ignoring changed section attributes for %s"), name); | |
805 | else | |
806 | as_bad (_("changed section attributes for %s"), name); | |
807 | } | |
9fb71ee4 | 808 | else |
037311d1 L |
809 | /* FIXME: Maybe we should consider removing a previously set |
810 | processor or application specific attribute as suspicious? */ | |
811 | elf_section_flags (sec) = attr; | |
9fb71ee4 | 812 | |
7a6d0b32 | 813 | if ((flags & SEC_MERGE) && old_sec->entsize != (unsigned) entsize) |
33176d91 | 814 | as_bad (_("changed section entity size for %s"), name); |
7a6d0b32 | 815 | } |
742f45cf | 816 | } |
9de8d8f1 RH |
817 | |
818 | #ifdef md_elf_section_change_hook | |
742f45cf | 819 | md_elf_section_change_hook (); |
9de8d8f1 RH |
820 | #endif |
821 | } | |
822 | ||
01e1a5bc | 823 | static bfd_vma |
df3a023b | 824 | obj_elf_parse_section_letters (char *str, size_t len, |
5b7c81bd | 825 | bool *is_clone, bfd_vma *gnu_attr) |
9de8d8f1 | 826 | { |
01e1a5bc | 827 | bfd_vma attr = 0; |
5b7c81bd | 828 | *is_clone = false; |
9de8d8f1 RH |
829 | |
830 | while (len > 0) | |
831 | { | |
832 | switch (*str) | |
833 | { | |
834 | case 'a': | |
835 | attr |= SHF_ALLOC; | |
ca988435 JB |
836 | /* Compatibility. */ |
837 | if (len > 1 && str[1] == 'm') | |
838 | { | |
839 | attr |= SHF_MERGE; | |
840 | str++, len--; | |
841 | if (len > 1 && str[1] == 's') | |
842 | { | |
843 | attr |= SHF_STRINGS; | |
844 | str++, len--; | |
845 | } | |
846 | } | |
9de8d8f1 | 847 | break; |
18ae9cc1 L |
848 | case 'e': |
849 | attr |= SHF_EXCLUDE; | |
850 | break; | |
b7d07216 L |
851 | case 'o': |
852 | attr |= SHF_LINK_ORDER; | |
853 | break; | |
9de8d8f1 RH |
854 | case 'w': |
855 | attr |= SHF_WRITE; | |
856 | break; | |
857 | case 'x': | |
858 | attr |= SHF_EXECINSTR; | |
859 | break; | |
9469ddf0 | 860 | case 'M': |
f5fa8ca2 JJ |
861 | attr |= SHF_MERGE; |
862 | break; | |
9469ddf0 | 863 | case 'S': |
f5fa8ca2 JJ |
864 | attr |= SHF_STRINGS; |
865 | break; | |
060adf0e AM |
866 | case 'G': |
867 | attr |= SHF_GROUP; | |
868 | break; | |
13ae64f3 JJ |
869 | case 'T': |
870 | attr |= SHF_TLS; | |
871 | break; | |
a91e1603 | 872 | case 'd': |
df3a023b | 873 | *gnu_attr |= SHF_GNU_MBIND; |
a91e1603 | 874 | break; |
99fabbc9 JL |
875 | case 'R': |
876 | *gnu_attr |= SHF_GNU_RETAIN; | |
877 | break; | |
01642c12 | 878 | case '?': |
5b7c81bd | 879 | *is_clone = true; |
01642c12 | 880 | break; |
9de8d8f1 RH |
881 | default: |
882 | { | |
6d4af3c2 | 883 | const char *bad_msg = _("unrecognized .section attribute:" |
b7d07216 | 884 | " want a,e,o,w,x,M,S,G,T or number"); |
9de8d8f1 | 885 | #ifdef md_elf_section_letter |
01e1a5bc | 886 | bfd_vma md_attr = md_elf_section_letter (*str, &bad_msg); |
8f3bae45 | 887 | if (md_attr != (bfd_vma) -1) |
9de8d8f1 RH |
888 | attr |= md_attr; |
889 | else | |
890 | #endif | |
9fb71ee4 NC |
891 | if (ISDIGIT (*str)) |
892 | { | |
893 | char * end; | |
99fabbc9 JL |
894 | struct elf_backend_data *bed; |
895 | bfd_vma numeric_flags = strtoul (str, &end, 0); | |
896 | ||
897 | attr |= numeric_flags; | |
898 | ||
899 | bed = (struct elf_backend_data *) | |
900 | get_elf_backend_data (stdoutput); | |
901 | ||
902 | if (bed->elf_osabi == ELFOSABI_NONE | |
903 | || bed->elf_osabi == ELFOSABI_STANDALONE | |
904 | || bed->elf_osabi == ELFOSABI_GNU | |
905 | || bed->elf_osabi == ELFOSABI_FREEBSD) | |
906 | { | |
907 | /* Add flags in the SHF_MASKOS range to gnu_attr for | |
908 | OSABIs that support those flags. | |
909 | Also adding the flags for ELFOSABI_{NONE,STANDALONE} | |
910 | allows them to be validated later in obj_elf_section. | |
911 | We can't just always set these bits in gnu_attr for | |
912 | all OSABIs, since Binutils does not recognize all | |
913 | SHF_MASKOS bits for non-GNU OSABIs. It's therefore | |
914 | possible that numeric flags are being used to set bits | |
915 | in the SHF_MASKOS range for those targets, and we | |
916 | don't want assembly to fail in those situations. */ | |
917 | *gnu_attr |= (numeric_flags & SHF_MASKOS); | |
918 | } | |
9fb71ee4 | 919 | |
9fb71ee4 NC |
920 | /* Update str and len, allowing for the fact that |
921 | we will execute str++ and len-- below. */ | |
922 | end --; | |
923 | len -= (end - str); | |
924 | str = end; | |
925 | } | |
926 | else | |
927 | as_fatal ("%s", bad_msg); | |
9de8d8f1 RH |
928 | } |
929 | break; | |
930 | } | |
931 | str++, len--; | |
932 | } | |
933 | ||
934 | return attr; | |
935 | } | |
936 | ||
8d28c9d7 | 937 | static int |
5b7c81bd | 938 | obj_elf_section_type (char *str, size_t len, bool warn) |
9de8d8f1 | 939 | { |
d34049e8 | 940 | if (len == 8 && startswith (str, "progbits")) |
9de8d8f1 | 941 | return SHT_PROGBITS; |
d34049e8 | 942 | if (len == 6 && startswith (str, "nobits")) |
9de8d8f1 | 943 | return SHT_NOBITS; |
d34049e8 | 944 | if (len == 4 && startswith (str, "note")) |
34f70875 | 945 | return SHT_NOTE; |
d34049e8 | 946 | if (len == 10 && startswith (str, "init_array")) |
10b016c2 | 947 | return SHT_INIT_ARRAY; |
d34049e8 | 948 | if (len == 10 && startswith (str, "fini_array")) |
10b016c2 | 949 | return SHT_FINI_ARRAY; |
d34049e8 | 950 | if (len == 13 && startswith (str, "preinit_array")) |
10b016c2 | 951 | return SHT_PREINIT_ARRAY; |
9de8d8f1 RH |
952 | |
953 | #ifdef md_elf_section_type | |
954 | { | |
955 | int md_type = md_elf_section_type (str, len); | |
956 | if (md_type >= 0) | |
957 | return md_type; | |
958 | } | |
959 | #endif | |
960 | ||
9fb71ee4 NC |
961 | if (ISDIGIT (*str)) |
962 | { | |
963 | char * end; | |
964 | int type = strtoul (str, & end, 0); | |
965 | ||
966 | if (warn && (size_t) (end - str) != len) | |
967 | as_warn (_("extraneous characters at end of numeric section type")); | |
968 | ||
969 | return type; | |
970 | } | |
971 | ||
44bf2362 NC |
972 | if (warn) |
973 | as_warn (_("unrecognized section type")); | |
974 | return 0; | |
975 | } | |
976 | ||
4cb88cfa | 977 | #ifdef TC_SPARC |
01e1a5bc | 978 | static bfd_vma |
44bf2362 NC |
979 | obj_elf_section_word (char *str, size_t len, int *type) |
980 | { | |
981 | int ret; | |
982 | ||
d34049e8 | 983 | if (len == 5 && startswith (str, "write")) |
44bf2362 | 984 | return SHF_WRITE; |
d34049e8 | 985 | if (len == 5 && startswith (str, "alloc")) |
44bf2362 | 986 | return SHF_ALLOC; |
d34049e8 | 987 | if (len == 9 && startswith (str, "execinstr")) |
44bf2362 | 988 | return SHF_EXECINSTR; |
d34049e8 | 989 | if (len == 7 && startswith (str, "exclude")) |
18ae9cc1 | 990 | return SHF_EXCLUDE; |
d34049e8 | 991 | if (len == 3 && startswith (str, "tls")) |
44bf2362 NC |
992 | return SHF_TLS; |
993 | ||
994 | #ifdef md_elf_section_word | |
995 | { | |
01e1a5bc NC |
996 | bfd_vma md_attr = md_elf_section_word (str, len); |
997 | if (md_attr > 0) | |
44bf2362 NC |
998 | return md_attr; |
999 | } | |
1000 | #endif | |
1001 | ||
5b7c81bd | 1002 | ret = obj_elf_section_type (str, len, false); |
44bf2362 NC |
1003 | if (ret != 0) |
1004 | *type = ret; | |
1005 | else | |
1006 | as_warn (_("unrecognized section attribute")); | |
1007 | ||
9de8d8f1 RH |
1008 | return 0; |
1009 | } | |
4cb88cfa | 1010 | #endif |
9de8d8f1 | 1011 | |
6ce8b369 | 1012 | /* Get name of section. */ |
82b8a785 | 1013 | const char * |
dbe2df79 | 1014 | obj_elf_section_name (void) |
6ce8b369 AM |
1015 | { |
1016 | char *name; | |
1017 | ||
1018 | SKIP_WHITESPACE (); | |
1019 | if (*input_line_pointer == '"') | |
1020 | { | |
1021 | int dummy; | |
1022 | ||
1023 | name = demand_copy_C_string (&dummy); | |
1024 | if (name == NULL) | |
1025 | { | |
1026 | ignore_rest_of_line (); | |
1027 | return NULL; | |
1028 | } | |
1029 | } | |
1030 | else | |
1031 | { | |
1032 | char *end = input_line_pointer; | |
1033 | ||
1034 | while (0 == strchr ("\n\t,; ", *end)) | |
1035 | end++; | |
1036 | if (end == input_line_pointer) | |
1037 | { | |
c95b35a9 | 1038 | as_bad (_("missing name")); |
6ce8b369 AM |
1039 | ignore_rest_of_line (); |
1040 | return NULL; | |
1041 | } | |
1042 | ||
15797439 AM |
1043 | obstack_grow0 (¬es, input_line_pointer, end - input_line_pointer); |
1044 | name = obstack_base (¬es); | |
451133ce NP |
1045 | |
1046 | while (flag_sectname_subst) | |
1047 | { | |
1048 | char *subst = strchr (name, '%'); | |
1049 | if (subst && subst[1] == 'S') | |
1050 | { | |
15797439 AM |
1051 | size_t head = subst - name; |
1052 | size_t tail = strlen (subst + 2) + 1; | |
1053 | size_t slen = strlen (now_seg->name); | |
1054 | ||
1055 | if (slen > 2) | |
1056 | { | |
1057 | obstack_blank (¬es, slen - 2); | |
1058 | name = obstack_base (¬es); | |
1059 | } | |
1060 | memmove (name + head + slen, name + head + 2, tail); | |
1061 | memcpy (name + head, now_seg->name, slen); | |
451133ce NP |
1062 | } |
1063 | else | |
1064 | break; | |
1065 | } | |
1066 | ||
15797439 AM |
1067 | obstack_finish (¬es); |
1068 | ||
612d7b83 L |
1069 | #ifdef tc_canonicalize_section_name |
1070 | name = tc_canonicalize_section_name (name); | |
1071 | #endif | |
6ce8b369 AM |
1072 | input_line_pointer = end; |
1073 | } | |
1074 | SKIP_WHITESPACE (); | |
1075 | return name; | |
1076 | } | |
1077 | ||
642f545a NC |
1078 | static void |
1079 | obj_elf_attach_to_group (int dummy ATTRIBUTE_UNUSED) | |
1080 | { | |
1081 | const char * gname = obj_elf_section_name (); | |
1082 | ||
1083 | if (gname == NULL) | |
1084 | { | |
1085 | as_warn (_("group name not parseable")); | |
1086 | return; | |
1087 | } | |
1088 | ||
1089 | if (elf_group_name (now_seg)) | |
1090 | { | |
675b9d61 NC |
1091 | as_warn (_("section %s already has a group (%s)"), |
1092 | bfd_section_name (now_seg), elf_group_name (now_seg)); | |
642f545a NC |
1093 | return; |
1094 | } | |
1095 | ||
15797439 | 1096 | elf_group_name (now_seg) = gname; |
642f545a NC |
1097 | elf_section_flags (now_seg) |= SHF_GROUP; |
1098 | } | |
1099 | ||
9de8d8f1 | 1100 | void |
dbe2df79 | 1101 | obj_elf_section (int push) |
9de8d8f1 | 1102 | { |
a8c4d40b | 1103 | const char *name; |
82b8a785 | 1104 | char *beg; |
01e1a5bc NC |
1105 | int type, dummy; |
1106 | bfd_vma attr; | |
df3a023b | 1107 | bfd_vma gnu_attr; |
f5fa8ca2 | 1108 | int entsize; |
d2dab548 | 1109 | int linkonce; |
6f932bce | 1110 | subsegT new_subsection = -1; |
a8c4d40b | 1111 | struct elf_section_match match; |
b71702f1 | 1112 | unsigned long linked_to_section_index = -1UL; |
9de8d8f1 | 1113 | |
252b5132 RH |
1114 | if (flag_mri) |
1115 | { | |
1116 | char mri_type; | |
1117 | ||
9de8d8f1 | 1118 | #ifdef md_flush_pending_output |
60bcf0fa | 1119 | md_flush_pending_output (); |
9de8d8f1 RH |
1120 | #endif |
1121 | ||
476654be | 1122 | obj_elf_section_change_hook (); |
252b5132 RH |
1123 | |
1124 | s_mri_sect (&mri_type); | |
1125 | ||
1126 | #ifdef md_elf_section_change_hook | |
1127 | md_elf_section_change_hook (); | |
1128 | #endif | |
1129 | ||
1130 | return; | |
1131 | } | |
1132 | ||
6ce8b369 AM |
1133 | name = obj_elf_section_name (); |
1134 | if (name == NULL) | |
1135 | return; | |
f1f28025 | 1136 | |
a8c4d40b L |
1137 | memset (&match, 0, sizeof (match)); |
1138 | ||
f1f28025 NC |
1139 | symbolS * sym; |
1140 | if ((sym = symbol_find (name)) != NULL | |
1141 | && ! symbol_section_p (sym) | |
1142 | && S_IS_DEFINED (sym) | |
1143 | && ! S_IS_VOLATILE (sym) | |
1144 | && ! S_CAN_BE_REDEFINED (sym)) | |
1145 | { | |
1146 | as_bad (_("section name '%s' already defined as another symbol"), name); | |
1147 | ignore_rest_of_line (); | |
1148 | return; | |
1149 | } | |
252b5132 RH |
1150 | type = SHT_NULL; |
1151 | attr = 0; | |
df3a023b | 1152 | gnu_attr = 0; |
f5fa8ca2 | 1153 | entsize = 0; |
d2dab548 | 1154 | linkonce = 0; |
252b5132 RH |
1155 | |
1156 | if (*input_line_pointer == ',') | |
1157 | { | |
1158 | /* Skip the comma. */ | |
1159 | ++input_line_pointer; | |
252b5132 RH |
1160 | SKIP_WHITESPACE (); |
1161 | ||
9cfc3331 | 1162 | if (push && ISDIGIT (*input_line_pointer)) |
6f932bce | 1163 | { |
9cfc3331 | 1164 | /* .pushsection has an optional subsection. */ |
6f932bce | 1165 | new_subsection = (subsegT) get_absolute_expression (); |
9cfc3331 L |
1166 | |
1167 | SKIP_WHITESPACE (); | |
1168 | ||
1169 | /* Stop if we don't see a comma. */ | |
1170 | if (*input_line_pointer != ',') | |
1171 | goto done; | |
1172 | ||
1173 | /* Skip the comma. */ | |
1174 | ++input_line_pointer; | |
1175 | SKIP_WHITESPACE (); | |
6f932bce | 1176 | } |
9cfc3331 L |
1177 | |
1178 | if (*input_line_pointer == '"') | |
252b5132 | 1179 | { |
5b7c81bd | 1180 | bool is_clone; |
01642c12 | 1181 | |
9de8d8f1 RH |
1182 | beg = demand_copy_C_string (&dummy); |
1183 | if (beg == NULL) | |
252b5132 | 1184 | { |
9de8d8f1 RH |
1185 | ignore_rest_of_line (); |
1186 | return; | |
252b5132 | 1187 | } |
df3a023b AM |
1188 | attr |= obj_elf_parse_section_letters (beg, strlen (beg), |
1189 | &is_clone, &gnu_attr); | |
252b5132 RH |
1190 | |
1191 | SKIP_WHITESPACE (); | |
1192 | if (*input_line_pointer == ',') | |
1193 | { | |
9de8d8f1 | 1194 | char c; |
060adf0e AM |
1195 | char *save = input_line_pointer; |
1196 | ||
252b5132 RH |
1197 | ++input_line_pointer; |
1198 | SKIP_WHITESPACE (); | |
9de8d8f1 RH |
1199 | c = *input_line_pointer; |
1200 | if (c == '"') | |
252b5132 | 1201 | { |
9de8d8f1 RH |
1202 | beg = demand_copy_C_string (&dummy); |
1203 | if (beg == NULL) | |
252b5132 | 1204 | { |
9de8d8f1 RH |
1205 | ignore_rest_of_line (); |
1206 | return; | |
252b5132 | 1207 | } |
5b7c81bd | 1208 | type = obj_elf_section_type (beg, strlen (beg), true); |
9de8d8f1 RH |
1209 | } |
1210 | else if (c == '@' || c == '%') | |
1211 | { | |
d02603dc | 1212 | ++input_line_pointer; |
9fb71ee4 NC |
1213 | |
1214 | if (ISDIGIT (* input_line_pointer)) | |
df3a023b | 1215 | type = strtoul (input_line_pointer, &input_line_pointer, 0); |
9fb71ee4 NC |
1216 | else |
1217 | { | |
1218 | c = get_symbol_name (& beg); | |
1219 | (void) restore_line_pointer (c); | |
df3a023b AM |
1220 | type = obj_elf_section_type (beg, |
1221 | input_line_pointer - beg, | |
5b7c81bd | 1222 | true); |
9fb71ee4 | 1223 | } |
252b5132 | 1224 | } |
060adf0e AM |
1225 | else |
1226 | input_line_pointer = save; | |
252b5132 | 1227 | } |
f5fa8ca2 JJ |
1228 | |
1229 | SKIP_WHITESPACE (); | |
6ce8b369 | 1230 | if ((attr & SHF_MERGE) != 0 && *input_line_pointer == ',') |
f5fa8ca2 JJ |
1231 | { |
1232 | ++input_line_pointer; | |
1233 | SKIP_WHITESPACE (); | |
1234 | entsize = get_absolute_expression (); | |
6ce8b369 | 1235 | SKIP_WHITESPACE (); |
f5fa8ca2 JJ |
1236 | if (entsize < 0) |
1237 | { | |
6ce8b369 | 1238 | as_warn (_("invalid merge entity size")); |
f5fa8ca2 JJ |
1239 | attr &= ~SHF_MERGE; |
1240 | entsize = 0; | |
1241 | } | |
1242 | } | |
6ce8b369 AM |
1243 | else if ((attr & SHF_MERGE) != 0) |
1244 | { | |
1245 | as_warn (_("entity size for SHF_MERGE not specified")); | |
1246 | attr &= ~SHF_MERGE; | |
1247 | } | |
060adf0e | 1248 | |
b7d07216 L |
1249 | if ((attr & SHF_LINK_ORDER) != 0 && *input_line_pointer == ',') |
1250 | { | |
b7d07216 L |
1251 | ++input_line_pointer; |
1252 | SKIP_WHITESPACE (); | |
b71702f1 NC |
1253 | /* Check for a numeric section index, rather than a symbol name. */ |
1254 | if (ISDIGIT (* input_line_pointer)) | |
1255 | { | |
1256 | linked_to_section_index = strtoul (input_line_pointer, & input_line_pointer, 0); | |
1257 | } | |
1258 | else | |
1259 | { | |
1260 | char c; | |
1261 | unsigned int length; | |
1262 | ||
1263 | c = get_symbol_name (& beg); | |
1264 | (void) restore_line_pointer (c); | |
1265 | length = input_line_pointer - beg; | |
1266 | if (length) | |
1267 | match.linked_to_symbol_name = xmemdup0 (beg, length); | |
1268 | } | |
b7d07216 L |
1269 | } |
1270 | ||
f6616a06 | 1271 | if ((attr & SHF_GROUP) != 0 && is_clone) |
01642c12 RM |
1272 | { |
1273 | as_warn (_("? section flag ignored with G present")); | |
5b7c81bd | 1274 | is_clone = false; |
01642c12 | 1275 | } |
b71702f1 | 1276 | |
060adf0e AM |
1277 | if ((attr & SHF_GROUP) != 0 && *input_line_pointer == ',') |
1278 | { | |
1279 | ++input_line_pointer; | |
a8c4d40b L |
1280 | match.group_name = obj_elf_section_name (); |
1281 | if (match.group_name == NULL) | |
060adf0e | 1282 | attr &= ~SHF_GROUP; |
59365e19 | 1283 | else if (*input_line_pointer == ',') |
d2dab548 | 1284 | { |
59365e19 AM |
1285 | ++input_line_pointer; |
1286 | SKIP_WHITESPACE (); | |
d34049e8 | 1287 | if (startswith (input_line_pointer, "comdat")) |
59365e19 AM |
1288 | { |
1289 | input_line_pointer += 6; | |
1290 | linkonce = 1; | |
1291 | } | |
d2dab548 | 1292 | } |
d34049e8 | 1293 | else if (startswith (name, ".gnu.linkonce")) |
d2dab548 | 1294 | linkonce = 1; |
060adf0e AM |
1295 | } |
1296 | else if ((attr & SHF_GROUP) != 0) | |
1297 | { | |
1298 | as_warn (_("group name for SHF_GROUP not specified")); | |
1299 | attr &= ~SHF_GROUP; | |
1300 | } | |
01642c12 | 1301 | |
f6616a06 | 1302 | if (is_clone) |
01642c12 RM |
1303 | { |
1304 | const char *now_group = elf_group_name (now_seg); | |
1305 | if (now_group != NULL) | |
1306 | { | |
15797439 | 1307 | match.group_name = now_group; |
01642c12 RM |
1308 | linkonce = (now_seg->flags & SEC_LINK_ONCE) != 0; |
1309 | } | |
1310 | } | |
a91e1603 | 1311 | |
df3a023b | 1312 | if ((gnu_attr & SHF_GNU_MBIND) != 0 && *input_line_pointer == ',') |
a91e1603 | 1313 | { |
a8c4d40b | 1314 | char *save = input_line_pointer; |
a91e1603 L |
1315 | ++input_line_pointer; |
1316 | SKIP_WHITESPACE (); | |
1317 | if (ISDIGIT (* input_line_pointer)) | |
1318 | { | |
1319 | char *t = input_line_pointer; | |
037311d1 | 1320 | match.sh_info = strtoul (input_line_pointer, |
a8c4d40b | 1321 | &input_line_pointer, 0); |
037311d1 | 1322 | if (match.sh_info == (unsigned int) -1) |
a91e1603 L |
1323 | { |
1324 | as_warn (_("unsupported mbind section info: %s"), t); | |
037311d1 | 1325 | match.sh_info = 0; |
a91e1603 L |
1326 | } |
1327 | } | |
a8c4d40b L |
1328 | else |
1329 | input_line_pointer = save; | |
1330 | } | |
1331 | ||
037311d1 L |
1332 | if ((gnu_attr & SHF_GNU_RETAIN) != 0) |
1333 | match.sh_flags |= SHF_GNU_RETAIN; | |
1334 | ||
a8c4d40b L |
1335 | if (*input_line_pointer == ',') |
1336 | { | |
1337 | char *save = input_line_pointer; | |
b71702f1 | 1338 | |
a8c4d40b L |
1339 | ++input_line_pointer; |
1340 | SKIP_WHITESPACE (); | |
d34049e8 | 1341 | if (startswith (input_line_pointer, "unique")) |
a8c4d40b L |
1342 | { |
1343 | input_line_pointer += 6; | |
1344 | SKIP_WHITESPACE (); | |
1345 | if (*input_line_pointer == ',') | |
1346 | { | |
1347 | ++input_line_pointer; | |
1348 | SKIP_WHITESPACE (); | |
1349 | if (ISDIGIT (* input_line_pointer)) | |
1350 | { | |
1351 | bfd_vma id; | |
5b7c81bd | 1352 | bool overflow; |
a8c4d40b L |
1353 | char *t = input_line_pointer; |
1354 | if (sizeof (bfd_vma) <= sizeof (unsigned long)) | |
1355 | { | |
1356 | errno = 0; | |
1357 | id = strtoul (input_line_pointer, | |
1358 | &input_line_pointer, 0); | |
1359 | overflow = (id == (unsigned long) -1 | |
1360 | && errno == ERANGE); | |
1361 | } | |
1362 | else | |
1363 | { | |
1364 | id = bfd_scan_vma | |
1365 | (input_line_pointer, | |
1366 | (const char **) &input_line_pointer, 0); | |
1367 | overflow = id == ~(bfd_vma) 0; | |
1368 | } | |
1369 | if (overflow || id > (unsigned int) -1) | |
1370 | { | |
1371 | char *linefeed, saved_char = 0; | |
1372 | if ((linefeed = strchr (t, '\n')) != NULL) | |
1373 | { | |
1374 | saved_char = *linefeed; | |
1375 | *linefeed = '\0'; | |
1376 | } | |
1377 | as_bad (_("unsupported section id: %s"), t); | |
1378 | if (saved_char) | |
1379 | *linefeed = saved_char; | |
1380 | } | |
1381 | else | |
1382 | { | |
1383 | match.section_id = id; | |
1384 | match.flags |= SEC_ASSEMBLER_SECTION_ID; | |
1385 | } | |
1386 | } | |
1387 | } | |
1388 | } | |
1389 | else | |
1390 | input_line_pointer = save; | |
a91e1603 | 1391 | } |
252b5132 | 1392 | } |
4cb88cfa | 1393 | #ifdef TC_SPARC |
252b5132 RH |
1394 | else |
1395 | { | |
1396 | do | |
1397 | { | |
9de8d8f1 RH |
1398 | char c; |
1399 | ||
252b5132 RH |
1400 | SKIP_WHITESPACE (); |
1401 | if (*input_line_pointer != '#') | |
1402 | { | |
c95b35a9 | 1403 | as_bad (_("character following name is not '#'")); |
252b5132 RH |
1404 | ignore_rest_of_line (); |
1405 | return; | |
1406 | } | |
d02603dc NC |
1407 | ++input_line_pointer; |
1408 | c = get_symbol_name (& beg); | |
1409 | (void) restore_line_pointer (c); | |
9de8d8f1 | 1410 | |
df3a023b AM |
1411 | attr |= obj_elf_section_word (beg, input_line_pointer - beg, |
1412 | &type); | |
9de8d8f1 | 1413 | |
252b5132 RH |
1414 | SKIP_WHITESPACE (); |
1415 | } | |
1416 | while (*input_line_pointer++ == ','); | |
1417 | --input_line_pointer; | |
1418 | } | |
4cb88cfa | 1419 | #endif |
252b5132 RH |
1420 | } |
1421 | ||
dc1e8a47 | 1422 | done: |
252b5132 | 1423 | demand_empty_rest_of_line (); |
9de8d8f1 | 1424 | |
99fabbc9 | 1425 | if ((gnu_attr & (SHF_GNU_MBIND | SHF_GNU_RETAIN)) != 0) |
df3a023b | 1426 | { |
c410035d | 1427 | const struct elf_backend_data *bed; |
5b7c81bd | 1428 | bool mbind_p = (gnu_attr & SHF_GNU_MBIND) != 0; |
df3a023b | 1429 | |
99fabbc9 | 1430 | if (mbind_p && (attr & SHF_ALLOC) == 0) |
df3a023b AM |
1431 | as_bad (_("SHF_ALLOC isn't set for GNU_MBIND section: %s"), name); |
1432 | ||
c410035d | 1433 | bed = get_elf_backend_data (stdoutput); |
99fabbc9 JL |
1434 | |
1435 | if (bed->elf_osabi != ELFOSABI_GNU | |
1436 | && bed->elf_osabi != ELFOSABI_FREEBSD | |
1437 | && bed->elf_osabi != ELFOSABI_NONE) | |
1438 | as_bad (_("%s section is supported only by GNU and FreeBSD targets"), | |
1439 | mbind_p ? "GNU_MBIND" : "GNU_RETAIN"); | |
1440 | else | |
1441 | { | |
99fabbc9 JL |
1442 | if (mbind_p) |
1443 | elf_tdata (stdoutput)->has_gnu_osabi |= elf_gnu_osabi_mbind; | |
1444 | if ((gnu_attr & SHF_GNU_RETAIN) != 0) | |
1445 | elf_tdata (stdoutput)->has_gnu_osabi |= elf_gnu_osabi_retain; | |
1446 | ||
1447 | attr |= gnu_attr; | |
1448 | } | |
df3a023b | 1449 | } |
99fabbc9 JL |
1450 | |
1451 | obj_elf_change_section (name, type, attr, entsize, &match, linkonce, | |
1452 | push); | |
df3a023b | 1453 | |
b71702f1 NC |
1454 | if (linked_to_section_index != -1UL) |
1455 | { | |
1456 | elf_section_flags (now_seg) |= SHF_LINK_ORDER; | |
1457 | elf_section_data (now_seg)->this_hdr.sh_link = linked_to_section_index; | |
1458 | /* FIXME: Should we perform some sanity checking on the section index ? */ | |
1459 | } | |
1460 | ||
6f932bce NC |
1461 | if (push && new_subsection != -1) |
1462 | subseg_set (now_seg, new_subsection); | |
252b5132 RH |
1463 | } |
1464 | ||
476654be NC |
1465 | /* Change to the .bss section. */ |
1466 | ||
1467 | void | |
1468 | obj_elf_bss (int i ATTRIBUTE_UNUSED) | |
1469 | { | |
1470 | int temp; | |
1471 | ||
1472 | #ifdef md_flush_pending_output | |
1473 | md_flush_pending_output (); | |
1474 | #endif | |
1475 | ||
1476 | obj_elf_section_change_hook (); | |
1477 | ||
1478 | temp = get_absolute_expression (); | |
1479 | subseg_set (bss_section, (subsegT) temp); | |
1480 | demand_empty_rest_of_line (); | |
1481 | ||
1482 | #ifdef md_elf_section_change_hook | |
1483 | md_elf_section_change_hook (); | |
1484 | #endif | |
1485 | } | |
1486 | ||
252b5132 RH |
1487 | /* Change to the .data section. */ |
1488 | ||
16b93d88 | 1489 | void |
dbe2df79 | 1490 | obj_elf_data (int i) |
252b5132 RH |
1491 | { |
1492 | #ifdef md_flush_pending_output | |
1493 | md_flush_pending_output (); | |
1494 | #endif | |
1495 | ||
476654be NC |
1496 | obj_elf_section_change_hook (); |
1497 | ||
252b5132 RH |
1498 | s_data (i); |
1499 | ||
1500 | #ifdef md_elf_section_change_hook | |
1501 | md_elf_section_change_hook (); | |
1502 | #endif | |
1503 | } | |
1504 | ||
1505 | /* Change to the .text section. */ | |
1506 | ||
16b93d88 | 1507 | void |
dbe2df79 | 1508 | obj_elf_text (int i) |
252b5132 RH |
1509 | { |
1510 | #ifdef md_flush_pending_output | |
1511 | md_flush_pending_output (); | |
1512 | #endif | |
1513 | ||
476654be NC |
1514 | obj_elf_section_change_hook (); |
1515 | ||
252b5132 RH |
1516 | s_text (i); |
1517 | ||
1518 | #ifdef md_elf_section_change_hook | |
1519 | md_elf_section_change_hook (); | |
1520 | #endif | |
1521 | } | |
1522 | ||
8fe53b44 JB |
1523 | /* Change to the *ABS* section. */ |
1524 | ||
1525 | void | |
1526 | obj_elf_struct (int i) | |
1527 | { | |
1528 | #ifdef md_flush_pending_output | |
1529 | md_flush_pending_output (); | |
1530 | #endif | |
1531 | ||
476654be NC |
1532 | obj_elf_section_change_hook (); |
1533 | ||
8fe53b44 JB |
1534 | s_struct (i); |
1535 | ||
1536 | #ifdef md_elf_section_change_hook | |
1537 | md_elf_section_change_hook (); | |
1538 | #endif | |
1539 | } | |
1540 | ||
252b5132 | 1541 | static void |
dbe2df79 | 1542 | obj_elf_subsection (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1543 | { |
6f932bce | 1544 | int temp; |
252b5132 RH |
1545 | |
1546 | #ifdef md_flush_pending_output | |
1547 | md_flush_pending_output (); | |
1548 | #endif | |
1549 | ||
476654be | 1550 | obj_elf_section_change_hook (); |
252b5132 RH |
1551 | |
1552 | temp = get_absolute_expression (); | |
1553 | subseg_set (now_seg, (subsegT) temp); | |
1554 | demand_empty_rest_of_line (); | |
1555 | ||
1556 | #ifdef md_elf_section_change_hook | |
1557 | md_elf_section_change_hook (); | |
1558 | #endif | |
1559 | } | |
1560 | ||
1561 | /* This can be called from the processor backends if they change | |
1562 | sections. */ | |
1563 | ||
1564 | void | |
dbe2df79 | 1565 | obj_elf_section_change_hook (void) |
252b5132 RH |
1566 | { |
1567 | previous_section = now_seg; | |
1568 | previous_subsection = now_subseg; | |
1569 | } | |
1570 | ||
1571 | void | |
dbe2df79 | 1572 | obj_elf_previous (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1573 | { |
9de8d8f1 RH |
1574 | segT new_section; |
1575 | int new_subsection; | |
1576 | ||
252b5132 RH |
1577 | if (previous_section == 0) |
1578 | { | |
6ce8b369 | 1579 | as_warn (_(".previous without corresponding .section; ignored")); |
252b5132 RH |
1580 | return; |
1581 | } | |
1582 | ||
1583 | #ifdef md_flush_pending_output | |
1584 | md_flush_pending_output (); | |
1585 | #endif | |
1586 | ||
9de8d8f1 RH |
1587 | new_section = previous_section; |
1588 | new_subsection = previous_subsection; | |
476654be NC |
1589 | obj_elf_section_change_hook (); |
1590 | ||
9de8d8f1 RH |
1591 | subseg_set (new_section, new_subsection); |
1592 | ||
1593 | #ifdef md_elf_section_change_hook | |
1594 | md_elf_section_change_hook (); | |
1595 | #endif | |
1596 | } | |
1597 | ||
1598 | static void | |
dbe2df79 | 1599 | obj_elf_popsection (int xxx ATTRIBUTE_UNUSED) |
9de8d8f1 RH |
1600 | { |
1601 | struct section_stack *top = section_stack; | |
1602 | ||
1603 | if (top == NULL) | |
1604 | { | |
6ce8b369 | 1605 | as_warn (_(".popsection without corresponding .pushsection; ignored")); |
9de8d8f1 RH |
1606 | return; |
1607 | } | |
1608 | ||
1609 | #ifdef md_flush_pending_output | |
1610 | md_flush_pending_output (); | |
1611 | #endif | |
1612 | ||
1613 | section_stack = top->next; | |
1614 | previous_section = top->prev_seg; | |
1615 | previous_subsection = top->prev_subseg; | |
1616 | subseg_set (top->seg, top->subseg); | |
1617 | free (top); | |
252b5132 RH |
1618 | |
1619 | #ifdef md_elf_section_change_hook | |
1620 | md_elf_section_change_hook (); | |
1621 | #endif | |
1622 | } | |
1623 | ||
1624 | static void | |
dbe2df79 | 1625 | obj_elf_line (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1626 | { |
1627 | /* Assume delimiter is part of expression. BSD4.2 as fails with | |
bf514e21 | 1628 | delightful bug, so we are not being incompatible here. */ |
dbe2df79 | 1629 | new_logical_line (NULL, get_absolute_expression ()); |
252b5132 RH |
1630 | demand_empty_rest_of_line (); |
1631 | } | |
1632 | ||
6914be53 L |
1633 | static struct elf_versioned_name_list * |
1634 | obj_elf_find_and_add_versioned_name (const char *version_name, | |
1635 | const char *sym_name, | |
1636 | const char *ver, | |
1637 | struct elf_obj_sy *sy_obj) | |
1638 | { | |
1639 | struct elf_versioned_name_list *versioned_name; | |
1640 | const char *p; | |
1641 | ||
1642 | for (p = ver + 1; *p == ELF_VER_CHR; p++) | |
1643 | ; | |
1644 | ||
1645 | /* NB: Since some tests in ld/testsuite/ld-elfvers have no version | |
1646 | names, we have to disable this. */ | |
1647 | if (0 && *p == '\0') | |
1648 | { | |
1649 | as_bad (_("missing version name in `%s' for symbol `%s'"), | |
1650 | version_name, sym_name); | |
1651 | return NULL; | |
1652 | } | |
1653 | ||
1654 | versioned_name = sy_obj->versioned_name; | |
1655 | ||
1656 | switch (p - ver) | |
1657 | { | |
1658 | case 1: | |
1659 | case 2: | |
1660 | break; | |
1661 | case 3: | |
1662 | if (sy_obj->rename) | |
1663 | { | |
1664 | if (strcmp (versioned_name->name, version_name) == 0) | |
1665 | return versioned_name; | |
1666 | else | |
1667 | { | |
1668 | as_bad (_("only one version name with `@@@' is allowed " | |
1669 | "for symbol `%s'"), sym_name); | |
1670 | return NULL; | |
1671 | } | |
1672 | } | |
5b7c81bd | 1673 | sy_obj->rename = true; |
6914be53 L |
1674 | break; |
1675 | default: | |
1676 | as_bad (_("invalid version name '%s' for symbol `%s'"), | |
1677 | version_name, sym_name); | |
1678 | return NULL; | |
1679 | } | |
1680 | ||
1681 | for (; | |
1682 | versioned_name != NULL; | |
1683 | versioned_name = versioned_name->next) | |
1684 | if (strcmp (versioned_name->name, version_name) == 0) | |
1685 | return versioned_name; | |
1686 | ||
1687 | /* Add this versioned name to the head of the list, */ | |
1688 | versioned_name = (struct elf_versioned_name_list *) | |
1689 | xmalloc (sizeof (*versioned_name)); | |
1690 | versioned_name->name = xstrdup (version_name); | |
1691 | versioned_name->next = sy_obj->versioned_name; | |
1692 | sy_obj->versioned_name = versioned_name; | |
1693 | ||
1694 | return versioned_name; | |
1695 | } | |
1696 | ||
252b5132 RH |
1697 | /* This handles the .symver pseudo-op, which is used to specify a |
1698 | symbol version. The syntax is ``.symver NAME,SYMVERNAME''. | |
1699 | SYMVERNAME may contain ELF_VER_CHR ('@') characters. This | |
1700 | pseudo-op causes the assembler to emit a symbol named SYMVERNAME | |
1701 | with the same value as the symbol NAME. */ | |
1702 | ||
1703 | static void | |
dbe2df79 | 1704 | obj_elf_symver (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1705 | { |
1706 | char *name; | |
6914be53 | 1707 | const char *sym_name; |
252b5132 | 1708 | char c; |
468cced8 | 1709 | char old_lexat; |
252b5132 | 1710 | symbolS *sym; |
6914be53 L |
1711 | struct elf_obj_sy *sy_obj; |
1712 | char *p; | |
252b5132 | 1713 | |
6e8bd58f | 1714 | sym = get_sym_from_input_line_and_check (); |
252b5132 | 1715 | |
252b5132 RH |
1716 | if (*input_line_pointer != ',') |
1717 | { | |
1718 | as_bad (_("expected comma after name in .symver")); | |
1719 | ignore_rest_of_line (); | |
1720 | return; | |
1721 | } | |
1722 | ||
1723 | ++input_line_pointer; | |
eba874d8 | 1724 | SKIP_WHITESPACE (); |
468cced8 AM |
1725 | |
1726 | /* Temporarily include '@' in symbol names. */ | |
1727 | old_lexat = lex_type[(unsigned char) '@']; | |
1728 | lex_type[(unsigned char) '@'] |= LEX_NAME; | |
d02603dc | 1729 | c = get_symbol_name (& name); |
468cced8 | 1730 | lex_type[(unsigned char) '@'] = old_lexat; |
6914be53 | 1731 | sym_name = S_GET_NAME (sym); |
252b5132 | 1732 | |
a3aea05a L |
1733 | if (S_IS_COMMON (sym)) |
1734 | { | |
1735 | as_bad (_("`%s' can't be versioned to common symbol '%s'"), | |
6914be53 | 1736 | name, sym_name); |
a3aea05a L |
1737 | ignore_rest_of_line (); |
1738 | return; | |
1739 | } | |
1740 | ||
6914be53 L |
1741 | p = strchr (name, ELF_VER_CHR); |
1742 | if (p == NULL) | |
339681c0 | 1743 | { |
6914be53 L |
1744 | as_bad (_("missing version name in `%s' for symbol `%s'"), |
1745 | name, sym_name); | |
1746 | ignore_rest_of_line (); | |
1747 | return; | |
1748 | } | |
1749 | ||
1750 | sy_obj = symbol_get_obj (sym); | |
1751 | if (obj_elf_find_and_add_versioned_name (name, sym_name, | |
1752 | p, sy_obj) == NULL) | |
1753 | { | |
5b7c81bd | 1754 | sy_obj->bad_version = true; |
6914be53 L |
1755 | ignore_rest_of_line (); |
1756 | return; | |
1757 | } | |
252b5132 | 1758 | |
6914be53 | 1759 | (void) restore_line_pointer (c); |
252b5132 | 1760 | |
6914be53 L |
1761 | if (*input_line_pointer == ',') |
1762 | { | |
1763 | char *save = input_line_pointer; | |
1764 | ||
1765 | ++input_line_pointer; | |
1766 | SKIP_WHITESPACE (); | |
d34049e8 | 1767 | if (startswith (input_line_pointer, "local")) |
339681c0 | 1768 | { |
6914be53 L |
1769 | input_line_pointer += 5; |
1770 | sy_obj->visibility = visibility_local; | |
339681c0 | 1771 | } |
d34049e8 | 1772 | else if (startswith (input_line_pointer, "hidden")) |
339681c0 | 1773 | { |
6914be53 L |
1774 | input_line_pointer += 6; |
1775 | sy_obj->visibility = visibility_hidden; | |
339681c0 | 1776 | } |
d34049e8 | 1777 | else if (startswith (input_line_pointer, "remove")) |
6914be53 L |
1778 | { |
1779 | input_line_pointer += 6; | |
1780 | sy_obj->visibility = visibility_remove; | |
1781 | } | |
1782 | else | |
1783 | input_line_pointer = save; | |
252b5132 RH |
1784 | } |
1785 | ||
1786 | demand_empty_rest_of_line (); | |
1787 | } | |
1788 | ||
1789 | /* This handles the .vtable_inherit pseudo-op, which is used to indicate | |
1790 | to the linker the hierarchy in which a particular table resides. The | |
1791 | syntax is ".vtable_inherit CHILDNAME, PARENTNAME". */ | |
1792 | ||
904a31bf | 1793 | struct fix * |
68d20676 | 1794 | obj_elf_get_vtable_inherit (void) |
252b5132 RH |
1795 | { |
1796 | char *cname, *pname; | |
1797 | symbolS *csym, *psym; | |
1798 | char c, bad = 0; | |
1799 | ||
1800 | if (*input_line_pointer == '#') | |
1801 | ++input_line_pointer; | |
1802 | ||
d02603dc | 1803 | c = get_symbol_name (& cname); |
252b5132 RH |
1804 | csym = symbol_find (cname); |
1805 | ||
1806 | /* GCFIXME: should check that we don't have two .vtable_inherits for | |
1807 | the same child symbol. Also, we can currently only do this if the | |
1808 | child symbol is already exists and is placed in a fragment. */ | |
1809 | ||
49309057 | 1810 | if (csym == NULL || symbol_get_frag (csym) == NULL) |
252b5132 | 1811 | { |
bd3ba5d1 | 1812 | as_bad (_("expected `%s' to have already been set for .vtable_inherit"), |
252b5132 RH |
1813 | cname); |
1814 | bad = 1; | |
1815 | } | |
1816 | ||
1817 | *input_line_pointer = c; | |
1818 | ||
d02603dc | 1819 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
1820 | if (*input_line_pointer != ',') |
1821 | { | |
bd3ba5d1 | 1822 | as_bad (_("expected comma after name in .vtable_inherit")); |
252b5132 | 1823 | ignore_rest_of_line (); |
904a31bf | 1824 | return NULL; |
252b5132 RH |
1825 | } |
1826 | ||
1827 | ++input_line_pointer; | |
1828 | SKIP_WHITESPACE (); | |
1829 | ||
1830 | if (*input_line_pointer == '#') | |
1831 | ++input_line_pointer; | |
1832 | ||
1833 | if (input_line_pointer[0] == '0' | |
1834 | && (input_line_pointer[1] == '\0' | |
3882b010 | 1835 | || ISSPACE (input_line_pointer[1]))) |
252b5132 RH |
1836 | { |
1837 | psym = section_symbol (absolute_section); | |
1838 | ++input_line_pointer; | |
1839 | } | |
1840 | else | |
1841 | { | |
d02603dc | 1842 | c = get_symbol_name (& pname); |
252b5132 | 1843 | psym = symbol_find_or_make (pname); |
d02603dc | 1844 | restore_line_pointer (c); |
252b5132 RH |
1845 | } |
1846 | ||
1847 | demand_empty_rest_of_line (); | |
1848 | ||
1849 | if (bad) | |
904a31bf | 1850 | return NULL; |
252b5132 | 1851 | |
9c2799c2 | 1852 | gas_assert (symbol_get_value_expression (csym)->X_op == O_constant); |
904a31bf AM |
1853 | return fix_new (symbol_get_frag (csym), |
1854 | symbol_get_value_expression (csym)->X_add_number, | |
1855 | 0, psym, 0, 0, BFD_RELOC_VTABLE_INHERIT); | |
252b5132 | 1856 | } |
fa306131 | 1857 | |
68d20676 NC |
1858 | /* This is a version of obj_elf_get_vtable_inherit() that is |
1859 | suitable for use in struct _pseudo_type tables. */ | |
1860 | ||
1861 | void | |
1862 | obj_elf_vtable_inherit (int ignore ATTRIBUTE_UNUSED) | |
1863 | { | |
1864 | (void) obj_elf_get_vtable_inherit (); | |
1865 | } | |
1866 | ||
252b5132 RH |
1867 | /* This handles the .vtable_entry pseudo-op, which is used to indicate |
1868 | to the linker that a vtable slot was used. The syntax is | |
1869 | ".vtable_entry tablename, offset". */ | |
1870 | ||
904a31bf | 1871 | struct fix * |
68d20676 | 1872 | obj_elf_get_vtable_entry (void) |
252b5132 | 1873 | { |
252b5132 RH |
1874 | symbolS *sym; |
1875 | offsetT offset; | |
252b5132 RH |
1876 | |
1877 | if (*input_line_pointer == '#') | |
1878 | ++input_line_pointer; | |
1879 | ||
6e8bd58f | 1880 | sym = get_sym_from_input_line_and_check (); |
252b5132 RH |
1881 | if (*input_line_pointer != ',') |
1882 | { | |
bd3ba5d1 | 1883 | as_bad (_("expected comma after name in .vtable_entry")); |
252b5132 | 1884 | ignore_rest_of_line (); |
904a31bf | 1885 | return NULL; |
252b5132 RH |
1886 | } |
1887 | ||
1888 | ++input_line_pointer; | |
1889 | if (*input_line_pointer == '#') | |
1890 | ++input_line_pointer; | |
1891 | ||
1892 | offset = get_absolute_expression (); | |
1893 | ||
252b5132 | 1894 | demand_empty_rest_of_line (); |
904a31bf AM |
1895 | |
1896 | return fix_new (frag_now, frag_now_fix (), 0, sym, offset, 0, | |
1897 | BFD_RELOC_VTABLE_ENTRY); | |
252b5132 RH |
1898 | } |
1899 | ||
68d20676 NC |
1900 | /* This is a version of obj_elf_get_vtable_entry() that is |
1901 | suitable for use in struct _pseudo_type tables. */ | |
1902 | ||
1903 | void | |
1904 | obj_elf_vtable_entry (int ignore ATTRIBUTE_UNUSED) | |
1905 | { | |
1906 | (void) obj_elf_get_vtable_entry (); | |
1907 | } | |
1908 | ||
0420f52b MR |
1909 | #define skip_whitespace(str) do { if (*(str) == ' ') ++(str); } while (0) |
1910 | ||
1911 | static inline int | |
1912 | skip_past_char (char ** str, char c) | |
1913 | { | |
1914 | if (**str == c) | |
1915 | { | |
1916 | (*str)++; | |
1917 | return 0; | |
1918 | } | |
1919 | else | |
1920 | return -1; | |
1921 | } | |
1922 | #define skip_past_comma(str) skip_past_char (str, ',') | |
1923 | ||
9440a904 RS |
1924 | /* A list of attributes that have been explicitly set by the assembly code. |
1925 | VENDOR is the vendor id, BASE is the tag shifted right by the number | |
1926 | of bits in MASK, and bit N of MASK is set if tag BASE+N has been set. */ | |
1927 | struct recorded_attribute_info { | |
1928 | struct recorded_attribute_info *next; | |
1929 | int vendor; | |
1930 | unsigned int base; | |
1931 | unsigned long mask; | |
1932 | }; | |
1933 | static struct recorded_attribute_info *recorded_attributes; | |
1934 | ||
1935 | /* Record that we have seen an explicit specification of attribute TAG | |
1936 | for vendor VENDOR. */ | |
1937 | ||
1938 | static void | |
1939 | record_attribute (int vendor, unsigned int tag) | |
1940 | { | |
1941 | unsigned int base; | |
1942 | unsigned long mask; | |
1943 | struct recorded_attribute_info *rai; | |
1944 | ||
1945 | base = tag / (8 * sizeof (rai->mask)); | |
1946 | mask = 1UL << (tag % (8 * sizeof (rai->mask))); | |
1947 | for (rai = recorded_attributes; rai; rai = rai->next) | |
1948 | if (rai->vendor == vendor && rai->base == base) | |
1949 | { | |
1950 | rai->mask |= mask; | |
1951 | return; | |
1952 | } | |
1953 | ||
1954 | rai = XNEW (struct recorded_attribute_info); | |
1955 | rai->next = recorded_attributes; | |
1956 | rai->vendor = vendor; | |
1957 | rai->base = base; | |
1958 | rai->mask = mask; | |
1959 | recorded_attributes = rai; | |
1960 | } | |
1961 | ||
1962 | /* Return true if we have seen an explicit specification of attribute TAG | |
1963 | for vendor VENDOR. */ | |
1964 | ||
5b7c81bd | 1965 | bool |
9440a904 RS |
1966 | obj_elf_seen_attribute (int vendor, unsigned int tag) |
1967 | { | |
1968 | unsigned int base; | |
1969 | unsigned long mask; | |
1970 | struct recorded_attribute_info *rai; | |
1971 | ||
1972 | base = tag / (8 * sizeof (rai->mask)); | |
1973 | mask = 1UL << (tag % (8 * sizeof (rai->mask))); | |
1974 | for (rai = recorded_attributes; rai; rai = rai->next) | |
1975 | if (rai->vendor == vendor && rai->base == base) | |
1976 | return (rai->mask & mask) != 0; | |
5b7c81bd | 1977 | return false; |
9440a904 RS |
1978 | } |
1979 | ||
0420f52b MR |
1980 | /* Parse an attribute directive for VENDOR. |
1981 | Returns the attribute number read, or zero on error. */ | |
1982 | ||
1983 | int | |
1984 | obj_elf_vendor_attribute (int vendor) | |
1985 | { | |
1986 | expressionS exp; | |
1987 | int type; | |
1988 | int tag; | |
1989 | unsigned int i = 0; | |
1990 | char *s = NULL; | |
1991 | ||
1992 | /* Read the first number or name. */ | |
1993 | skip_whitespace (input_line_pointer); | |
1994 | s = input_line_pointer; | |
1995 | if (ISDIGIT (*input_line_pointer)) | |
1996 | { | |
1997 | expression (& exp); | |
1998 | if (exp.X_op != O_constant) | |
1999 | goto bad; | |
2000 | tag = exp.X_add_number; | |
2001 | } | |
2002 | else | |
2003 | { | |
2004 | char *name; | |
2005 | ||
2006 | /* A name may contain '_', but no other punctuation. */ | |
2007 | for (; ISALNUM (*input_line_pointer) || *input_line_pointer == '_'; | |
2008 | ++input_line_pointer) | |
2009 | i++; | |
2010 | if (i == 0) | |
2011 | goto bad; | |
2012 | ||
15797439 | 2013 | name = xmemdup0 (s, i); |
0420f52b MR |
2014 | |
2015 | #ifndef CONVERT_SYMBOLIC_ATTRIBUTE | |
2016 | #define CONVERT_SYMBOLIC_ATTRIBUTE(a) -1 | |
2017 | #endif | |
2018 | ||
2019 | tag = CONVERT_SYMBOLIC_ATTRIBUTE (name); | |
2020 | if (tag == -1) | |
2021 | { | |
2022 | as_bad (_("Attribute name not recognised: %s"), name); | |
2023 | ignore_rest_of_line (); | |
e1fa0163 | 2024 | free (name); |
0420f52b MR |
2025 | return 0; |
2026 | } | |
e1fa0163 | 2027 | free (name); |
0420f52b MR |
2028 | } |
2029 | ||
2030 | type = _bfd_elf_obj_attrs_arg_type (stdoutput, vendor, tag); | |
2031 | ||
2032 | if (skip_past_comma (&input_line_pointer) == -1) | |
2033 | goto bad; | |
2034 | if (type & 1) | |
2035 | { | |
2036 | expression (& exp); | |
2037 | if (exp.X_op != O_constant) | |
2038 | { | |
2039 | as_bad (_("expected numeric constant")); | |
2040 | ignore_rest_of_line (); | |
2041 | return 0; | |
2042 | } | |
2043 | i = exp.X_add_number; | |
2044 | } | |
2045 | if ((type & 3) == 3 | |
2046 | && skip_past_comma (&input_line_pointer) == -1) | |
2047 | { | |
2048 | as_bad (_("expected comma")); | |
2049 | ignore_rest_of_line (); | |
2050 | return 0; | |
2051 | } | |
2052 | if (type & 2) | |
2053 | { | |
2054 | int len; | |
2055 | ||
2056 | skip_whitespace (input_line_pointer); | |
2057 | if (*input_line_pointer != '"') | |
2058 | goto bad_string; | |
2059 | s = demand_copy_C_string (&len); | |
2060 | } | |
2061 | ||
9440a904 | 2062 | record_attribute (vendor, tag); |
0420f52b MR |
2063 | switch (type & 3) |
2064 | { | |
2065 | case 3: | |
2066 | bfd_elf_add_obj_attr_int_string (stdoutput, vendor, tag, i, s); | |
2067 | break; | |
2068 | case 2: | |
2069 | bfd_elf_add_obj_attr_string (stdoutput, vendor, tag, s); | |
2070 | break; | |
2071 | case 1: | |
2072 | bfd_elf_add_obj_attr_int (stdoutput, vendor, tag, i); | |
2073 | break; | |
2074 | default: | |
2075 | abort (); | |
2076 | } | |
2077 | ||
2078 | demand_empty_rest_of_line (); | |
2079 | return tag; | |
dc1e8a47 | 2080 | bad_string: |
0420f52b MR |
2081 | as_bad (_("bad string constant")); |
2082 | ignore_rest_of_line (); | |
2083 | return 0; | |
dc1e8a47 | 2084 | bad: |
0420f52b MR |
2085 | as_bad (_("expected <tag> , <value>")); |
2086 | ignore_rest_of_line (); | |
2087 | return 0; | |
2088 | } | |
2089 | ||
2090 | /* Parse a .gnu_attribute directive. */ | |
2091 | ||
2092 | static void | |
2093 | obj_elf_gnu_attribute (int ignored ATTRIBUTE_UNUSED) | |
2094 | { | |
2095 | obj_elf_vendor_attribute (OBJ_ATTR_GNU); | |
2096 | } | |
2097 | ||
252b5132 | 2098 | void |
dbe2df79 | 2099 | elf_obj_read_begin_hook (void) |
252b5132 RH |
2100 | { |
2101 | #ifdef NEED_ECOFF_DEBUG | |
2102 | if (ECOFF_DEBUGGING) | |
2103 | ecoff_read_begin_hook (); | |
2104 | #endif | |
2105 | } | |
2106 | ||
2107 | void | |
dbe2df79 | 2108 | elf_obj_symbol_new_hook (symbolS *symbolP) |
252b5132 | 2109 | { |
49309057 ILT |
2110 | struct elf_obj_sy *sy_obj; |
2111 | ||
2112 | sy_obj = symbol_get_obj (symbolP); | |
2113 | sy_obj->size = NULL; | |
2114 | sy_obj->versioned_name = NULL; | |
252b5132 RH |
2115 | |
2116 | #ifdef NEED_ECOFF_DEBUG | |
2117 | if (ECOFF_DEBUGGING) | |
2118 | ecoff_symbol_new_hook (symbolP); | |
2119 | #endif | |
2120 | } | |
2121 | ||
7bed8466 AM |
2122 | /* Deduplicate size expressions. We might get into trouble with |
2123 | multiple freeing or use after free if we leave them pointing to the | |
2124 | same expressionS. */ | |
2125 | ||
2126 | void | |
2127 | elf_obj_symbol_clone_hook (symbolS *newsym, symbolS *orgsym ATTRIBUTE_UNUSED) | |
2128 | { | |
2129 | struct elf_obj_sy *newelf = symbol_get_obj (newsym); | |
2130 | if (newelf->size) | |
2131 | { | |
2132 | expressionS *exp = XNEW (expressionS); | |
2133 | *exp = *newelf->size; | |
2134 | newelf->size = exp; | |
2135 | } | |
2136 | } | |
2137 | ||
8fd3e36b | 2138 | void |
dbe2df79 | 2139 | elf_copy_symbol_attributes (symbolS *dest, symbolS *src) |
8fd3e36b | 2140 | { |
060adf0e AM |
2141 | struct elf_obj_sy *srcelf = symbol_get_obj (src); |
2142 | struct elf_obj_sy *destelf = symbol_get_obj (dest); | |
867b8c30 FS |
2143 | /* If size is unset, copy size from src. Because we don't track whether |
2144 | .size has been used, we can't differentiate .size dest, 0 from the case | |
2145 | where dest's size is unset. */ | |
2146 | if (!destelf->size && S_GET_SIZE (dest) == 0) | |
060adf0e | 2147 | { |
867b8c30 FS |
2148 | if (srcelf->size) |
2149 | { | |
2150 | destelf->size = XNEW (expressionS); | |
2151 | *destelf->size = *srcelf->size; | |
2152 | } | |
2153 | S_SET_SIZE (dest, S_GET_SIZE (src)); | |
060adf0e | 2154 | } |
26eb4093 JJ |
2155 | /* Don't copy visibility. */ |
2156 | S_SET_OTHER (dest, (ELF_ST_VISIBILITY (S_GET_OTHER (dest)) | |
2157 | | (S_GET_OTHER (src) & ~ELF_ST_VISIBILITY (-1)))); | |
8fd3e36b AM |
2158 | } |
2159 | ||
252b5132 | 2160 | void |
dbe2df79 | 2161 | obj_elf_version (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2162 | { |
2163 | char *name; | |
2164 | unsigned int c; | |
252b5132 RH |
2165 | char *p; |
2166 | asection *seg = now_seg; | |
2167 | subsegT subseg = now_subseg; | |
2168 | Elf_Internal_Note i_note; | |
2169 | Elf_External_Note e_note; | |
dbe2df79 | 2170 | asection *note_secp = NULL; |
252b5132 RH |
2171 | |
2172 | SKIP_WHITESPACE (); | |
2173 | if (*input_line_pointer == '\"') | |
2174 | { | |
6afdfa61 NC |
2175 | unsigned int len; |
2176 | ||
bf514e21 | 2177 | ++input_line_pointer; /* -> 1st char of string. */ |
252b5132 RH |
2178 | name = input_line_pointer; |
2179 | ||
2180 | while (is_a_char (c = next_char_of_string ())) | |
2181 | ; | |
2182 | c = *input_line_pointer; | |
2183 | *input_line_pointer = '\0'; | |
2184 | *(input_line_pointer - 1) = '\0'; | |
2185 | *input_line_pointer = c; | |
2186 | ||
6afdfa61 | 2187 | /* Create the .note section. */ |
252b5132 | 2188 | note_secp = subseg_new (".note", 0); |
fd361982 | 2189 | bfd_set_section_flags (note_secp, SEC_HAS_CONTENTS | SEC_READONLY); |
ed9c7ee0 | 2190 | record_alignment (note_secp, 2); |
252b5132 | 2191 | |
6afdfa61 NC |
2192 | /* Process the version string. */ |
2193 | len = strlen (name) + 1; | |
252b5132 | 2194 | |
6afdfa61 NC |
2195 | /* PR 3456: Although the name field is padded out to an 4-byte |
2196 | boundary, the namesz field should not be adjusted. */ | |
2197 | i_note.namesz = len; | |
2198 | i_note.descsz = 0; /* No description. */ | |
252b5132 RH |
2199 | i_note.type = NT_VERSION; |
2200 | p = frag_more (sizeof (e_note.namesz)); | |
dbe2df79 | 2201 | md_number_to_chars (p, i_note.namesz, sizeof (e_note.namesz)); |
252b5132 | 2202 | p = frag_more (sizeof (e_note.descsz)); |
dbe2df79 | 2203 | md_number_to_chars (p, i_note.descsz, sizeof (e_note.descsz)); |
252b5132 | 2204 | p = frag_more (sizeof (e_note.type)); |
dbe2df79 | 2205 | md_number_to_chars (p, i_note.type, sizeof (e_note.type)); |
6afdfa61 | 2206 | p = frag_more (len); |
5ab504f9 | 2207 | memcpy (p, name, len); |
252b5132 | 2208 | |
252b5132 RH |
2209 | frag_align (2, 0, 0); |
2210 | ||
2211 | subseg_set (seg, subseg); | |
2212 | } | |
2213 | else | |
6afdfa61 NC |
2214 | as_bad (_("expected quoted string")); |
2215 | ||
252b5132 RH |
2216 | demand_empty_rest_of_line (); |
2217 | } | |
2218 | ||
2219 | static void | |
dbe2df79 | 2220 | obj_elf_size (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2221 | { |
d02603dc NC |
2222 | char *name; |
2223 | char c = get_symbol_name (&name); | |
252b5132 RH |
2224 | char *p; |
2225 | expressionS exp; | |
2226 | symbolS *sym; | |
2227 | ||
2228 | p = input_line_pointer; | |
2229 | *p = c; | |
d02603dc | 2230 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
2231 | if (*input_line_pointer != ',') |
2232 | { | |
2233 | *p = 0; | |
2234 | as_bad (_("expected comma after name `%s' in .size directive"), name); | |
2235 | *p = c; | |
2236 | ignore_rest_of_line (); | |
2237 | return; | |
2238 | } | |
2239 | input_line_pointer++; | |
2240 | expression (&exp); | |
2241 | if (exp.X_op == O_absent) | |
2242 | { | |
2243 | as_bad (_("missing expression in .size directive")); | |
2244 | exp.X_op = O_constant; | |
2245 | exp.X_add_number = 0; | |
2246 | } | |
2247 | *p = 0; | |
2248 | sym = symbol_find_or_make (name); | |
2249 | *p = c; | |
2250 | if (exp.X_op == O_constant) | |
c538998c JJ |
2251 | { |
2252 | S_SET_SIZE (sym, exp.X_add_number); | |
9fbb53c7 AM |
2253 | xfree (symbol_get_obj (sym)->size); |
2254 | symbol_get_obj (sym)->size = NULL; | |
c538998c | 2255 | } |
252b5132 RH |
2256 | else |
2257 | { | |
325801bd | 2258 | symbol_get_obj (sym)->size = XNEW (expressionS); |
49309057 | 2259 | *symbol_get_obj (sym)->size = exp; |
252b5132 RH |
2260 | } |
2261 | demand_empty_rest_of_line (); | |
2262 | } | |
2263 | ||
2264 | /* Handle the ELF .type pseudo-op. This sets the type of a symbol. | |
44bf2362 | 2265 | There are six syntaxes: |
fa306131 | 2266 | |
252b5132 RH |
2267 | The first (used on Solaris) is |
2268 | .type SYM,#function | |
2269 | The second (used on UnixWare) is | |
2270 | .type SYM,@function | |
2271 | The third (reportedly to be used on Irix 6.0) is | |
2272 | .type SYM STT_FUNC | |
2273 | The fourth (used on NetBSD/Arm and Linux/ARM) is | |
2274 | .type SYM,%function | |
aa8c34c3 JE |
2275 | The fifth (used on SVR4/860) is |
2276 | .type SYM,"function" | |
44bf2362 NC |
2277 | The sixth (emitted by recent SunPRO under Solaris) is |
2278 | .type SYM,[0-9] | |
2279 | where the integer is the STT_* value. | |
252b5132 RH |
2280 | */ |
2281 | ||
44bf2362 NC |
2282 | static char * |
2283 | obj_elf_type_name (char *cp) | |
2284 | { | |
2285 | char *p; | |
2286 | ||
2287 | p = input_line_pointer; | |
2288 | if (*input_line_pointer >= '0' | |
2289 | && *input_line_pointer <= '9') | |
2290 | { | |
2291 | while (*input_line_pointer >= '0' | |
2292 | && *input_line_pointer <= '9') | |
2293 | ++input_line_pointer; | |
2294 | *cp = *input_line_pointer; | |
2295 | *input_line_pointer = '\0'; | |
2296 | } | |
2297 | else | |
d02603dc | 2298 | *cp = get_symbol_name (&p); |
44bf2362 NC |
2299 | |
2300 | return p; | |
2301 | } | |
2302 | ||
252b5132 | 2303 | static void |
dbe2df79 | 2304 | obj_elf_type (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2305 | { |
252b5132 RH |
2306 | char c; |
2307 | int type; | |
1e9cc1c2 | 2308 | const char *type_name; |
252b5132 | 2309 | symbolS *sym; |
904a31bf | 2310 | elf_symbol_type *elfsym; |
252b5132 | 2311 | |
6e8bd58f NS |
2312 | sym = get_sym_from_input_line_and_check (); |
2313 | c = *input_line_pointer; | |
904a31bf | 2314 | elfsym = (elf_symbol_type *) symbol_get_bfdsym (sym); |
252b5132 | 2315 | |
252b5132 RH |
2316 | if (*input_line_pointer == ',') |
2317 | ++input_line_pointer; | |
2318 | ||
2319 | SKIP_WHITESPACE (); | |
2320 | if ( *input_line_pointer == '#' | |
2321 | || *input_line_pointer == '@' | |
aa8c34c3 | 2322 | || *input_line_pointer == '"' |
252b5132 RH |
2323 | || *input_line_pointer == '%') |
2324 | ++input_line_pointer; | |
2325 | ||
1e9cc1c2 | 2326 | type_name = obj_elf_type_name (& c); |
252b5132 RH |
2327 | |
2328 | type = 0; | |
1e9cc1c2 NC |
2329 | if (strcmp (type_name, "function") == 0 |
2330 | || strcmp (type_name, "2") == 0 | |
2331 | || strcmp (type_name, "STT_FUNC") == 0) | |
252b5132 | 2332 | type = BSF_FUNCTION; |
1e9cc1c2 NC |
2333 | else if (strcmp (type_name, "object") == 0 |
2334 | || strcmp (type_name, "1") == 0 | |
2335 | || strcmp (type_name, "STT_OBJECT") == 0) | |
252b5132 | 2336 | type = BSF_OBJECT; |
1e9cc1c2 NC |
2337 | else if (strcmp (type_name, "tls_object") == 0 |
2338 | || strcmp (type_name, "6") == 0 | |
2339 | || strcmp (type_name, "STT_TLS") == 0) | |
b9734f35 | 2340 | type = BSF_OBJECT | BSF_THREAD_LOCAL; |
1e9cc1c2 NC |
2341 | else if (strcmp (type_name, "notype") == 0 |
2342 | || strcmp (type_name, "0") == 0 | |
2343 | || strcmp (type_name, "STT_NOTYPE") == 0) | |
e7b9a8c1 | 2344 | ; |
1e9cc1c2 NC |
2345 | else if (strcmp (type_name, "common") == 0 |
2346 | || strcmp (type_name, "5") == 0 | |
2347 | || strcmp (type_name, "STT_COMMON") == 0) | |
504b7d20 NC |
2348 | { |
2349 | type = BSF_OBJECT; | |
2350 | ||
2351 | if (! S_IS_COMMON (sym)) | |
2352 | { | |
2353 | if (S_IS_VOLATILE (sym)) | |
2354 | { | |
2355 | sym = symbol_clone (sym, 1); | |
2356 | S_SET_SEGMENT (sym, bfd_com_section_ptr); | |
2357 | S_SET_VALUE (sym, 0); | |
2358 | S_SET_EXTERNAL (sym); | |
2359 | symbol_set_frag (sym, &zero_address_frag); | |
2360 | S_CLEAR_VOLATILE (sym); | |
2361 | } | |
2362 | else if (S_IS_DEFINED (sym) || symbol_equated_p (sym)) | |
2363 | as_bad (_("symbol '%s' is already defined"), S_GET_NAME (sym)); | |
2364 | else | |
2365 | { | |
2366 | /* FIXME: Is it safe to just change the section ? */ | |
2367 | S_SET_SEGMENT (sym, bfd_com_section_ptr); | |
2368 | S_SET_VALUE (sym, 0); | |
2369 | S_SET_EXTERNAL (sym); | |
2370 | } | |
2371 | } | |
2372 | } | |
1e9cc1c2 NC |
2373 | else if (strcmp (type_name, "gnu_indirect_function") == 0 |
2374 | || strcmp (type_name, "10") == 0 | |
2375 | || strcmp (type_name, "STT_GNU_IFUNC") == 0) | |
d8045f23 | 2376 | { |
c410035d | 2377 | const struct elf_backend_data *bed; |
df3a023b | 2378 | |
c410035d AM |
2379 | bed = get_elf_backend_data (stdoutput); |
2380 | if (bed->elf_osabi != ELFOSABI_NONE | |
2381 | && bed->elf_osabi != ELFOSABI_GNU | |
2382 | && bed->elf_osabi != ELFOSABI_FREEBSD) | |
df3a023b AM |
2383 | as_bad (_("symbol type \"%s\" is supported only by GNU " |
2384 | "and FreeBSD targets"), type_name); | |
8e4979ac NC |
2385 | /* MIPS targets do not support IFUNCS. */ |
2386 | else if (bed->target_id == MIPS_ELF_DATA) | |
2387 | as_bad (_("symbol type \"%s\" is not supported by " | |
2388 | "MIPS targets"), type_name); | |
cc364be6 | 2389 | elf_tdata (stdoutput)->has_gnu_osabi |= elf_gnu_osabi_ifunc; |
d8045f23 NC |
2390 | type = BSF_FUNCTION | BSF_GNU_INDIRECT_FUNCTION; |
2391 | } | |
1e9cc1c2 | 2392 | else if (strcmp (type_name, "gnu_unique_object") == 0) |
3e7a7d11 | 2393 | { |
c410035d | 2394 | const struct elf_backend_data *bed; |
3e7a7d11 | 2395 | |
c410035d AM |
2396 | bed = get_elf_backend_data (stdoutput); |
2397 | if (bed->elf_osabi != ELFOSABI_NONE | |
2398 | && bed->elf_osabi != ELFOSABI_GNU) | |
3e7a7d11 | 2399 | as_bad (_("symbol type \"%s\" is supported only by GNU targets"), |
1e9cc1c2 | 2400 | type_name); |
cc364be6 | 2401 | elf_tdata (stdoutput)->has_gnu_osabi |= elf_gnu_osabi_unique; |
3e7a7d11 NC |
2402 | type = BSF_OBJECT | BSF_GNU_UNIQUE; |
2403 | } | |
904a31bf | 2404 | #ifdef md_elf_symbol_type |
1e9cc1c2 | 2405 | else if ((type = md_elf_symbol_type (type_name, sym, elfsym)) != -1) |
904a31bf AM |
2406 | ; |
2407 | #endif | |
252b5132 | 2408 | else |
1e9cc1c2 | 2409 | as_bad (_("unrecognized symbol type \"%s\""), type_name); |
252b5132 RH |
2410 | |
2411 | *input_line_pointer = c; | |
2412 | ||
aa8c34c3 JE |
2413 | if (*input_line_pointer == '"') |
2414 | ++input_line_pointer; | |
2415 | ||
f2d4ba38 JB |
2416 | #ifdef md_elf_symbol_type_change |
2417 | if (!md_elf_symbol_type_change (sym, elfsym, type)) | |
2418 | #endif | |
2419 | { | |
2420 | flagword mask = BSF_FUNCTION | BSF_OBJECT; | |
2421 | ||
2422 | if (type != BSF_FUNCTION) | |
2423 | mask |= BSF_GNU_INDIRECT_FUNCTION; | |
2424 | if (type != BSF_OBJECT) | |
2425 | { | |
2426 | mask |= BSF_GNU_UNIQUE | BSF_THREAD_LOCAL; | |
2427 | ||
2428 | if (S_IS_COMMON (sym)) | |
2429 | { | |
2430 | as_bad (_("cannot change type of common symbol '%s'"), | |
2431 | S_GET_NAME (sym)); | |
2432 | mask = type = 0; | |
2433 | } | |
2434 | } | |
2435 | ||
2436 | /* Don't warn when changing to STT_NOTYPE. */ | |
2437 | if (type) | |
2438 | { | |
2439 | flagword new = (elfsym->symbol.flags & ~mask) | type; | |
2440 | ||
2441 | if (new != (elfsym->symbol.flags | type)) | |
2442 | as_warn (_("symbol '%s' already has its type set"), S_GET_NAME (sym)); | |
2443 | elfsym->symbol.flags = new; | |
2444 | } | |
2445 | else | |
2446 | elfsym->symbol.flags &= ~mask; | |
2447 | } | |
252b5132 RH |
2448 | |
2449 | demand_empty_rest_of_line (); | |
2450 | } | |
2451 | ||
2ccd2276 AM |
2452 | static segT comment_section; |
2453 | ||
252b5132 | 2454 | static void |
dbe2df79 | 2455 | obj_elf_ident (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2456 | { |
252b5132 RH |
2457 | segT old_section = now_seg; |
2458 | int old_subsection = now_subseg; | |
2459 | ||
5f91fe03 ILT |
2460 | #ifdef md_flush_pending_output |
2461 | md_flush_pending_output (); | |
2462 | #endif | |
2463 | ||
252b5132 RH |
2464 | if (!comment_section) |
2465 | { | |
2466 | char *p; | |
2467 | comment_section = subseg_new (".comment", 0); | |
fd361982 AM |
2468 | bfd_set_section_flags (comment_section, (SEC_READONLY | SEC_HAS_CONTENTS |
2469 | | SEC_MERGE | SEC_STRINGS)); | |
01fb1836 | 2470 | comment_section->entsize = 1; |
cd000bff DJ |
2471 | #ifdef md_elf_section_change_hook |
2472 | md_elf_section_change_hook (); | |
2473 | #endif | |
252b5132 RH |
2474 | p = frag_more (1); |
2475 | *p = 0; | |
2476 | } | |
2477 | else | |
2478 | subseg_set (comment_section, 0); | |
38a57ae7 | 2479 | stringer (8 + 1); |
252b5132 RH |
2480 | subseg_set (old_section, old_subsection); |
2481 | } | |
2482 | ||
2483 | #ifdef INIT_STAB_SECTION | |
2484 | ||
2485 | /* The first entry in a .stabs section is special. */ | |
2486 | ||
2487 | void | |
dbe2df79 | 2488 | obj_elf_init_stab_section (segT seg) |
252b5132 | 2489 | { |
82cb2524 | 2490 | char *file; |
252b5132 RH |
2491 | char *p; |
2492 | char *stabstr_name; | |
2493 | unsigned int stroff; | |
2494 | ||
2495 | /* Force the section to align to a longword boundary. Without this, | |
2496 | UnixWare ar crashes. */ | |
fd361982 | 2497 | bfd_set_section_alignment (seg, 2); |
252b5132 | 2498 | |
bf514e21 | 2499 | /* Make space for this first symbol. */ |
252b5132 | 2500 | p = frag_more (12); |
bf514e21 | 2501 | /* Zero it out. */ |
252b5132 | 2502 | memset (p, 0, 12); |
05412017 | 2503 | file = remap_debug_filename (as_where (NULL)); |
29a2809e | 2504 | stabstr_name = concat (segment_name (seg), "str", (char *) NULL); |
5b7c81bd | 2505 | stroff = get_stab_string_offset (file, stabstr_name, true); |
91952a06 | 2506 | know (stroff == 1 || (stroff == 0 && file[0] == '\0')); |
252b5132 RH |
2507 | md_number_to_chars (p, stroff, 4); |
2508 | seg_info (seg)->stabu.p = p; | |
82cb2524 | 2509 | free (file); |
252b5132 RH |
2510 | } |
2511 | ||
2512 | #endif | |
2513 | ||
2514 | /* Fill in the counts in the first entry in a .stabs section. */ | |
2515 | ||
2516 | static void | |
dbe2df79 | 2517 | adjust_stab_sections (bfd *abfd, asection *sec, void *xxx ATTRIBUTE_UNUSED) |
252b5132 RH |
2518 | { |
2519 | char *name; | |
2520 | asection *strsec; | |
2521 | char *p; | |
2522 | int strsz, nsyms; | |
2523 | ||
d34049e8 | 2524 | if (!startswith (sec->name, ".stab")) |
252b5132 RH |
2525 | return; |
2526 | if (!strcmp ("str", sec->name + strlen (sec->name) - 3)) | |
2527 | return; | |
2528 | ||
e1fa0163 | 2529 | name = concat (sec->name, "str", NULL); |
252b5132 RH |
2530 | strsec = bfd_get_section_by_name (abfd, name); |
2531 | if (strsec) | |
fd361982 | 2532 | strsz = bfd_section_size (strsec); |
252b5132 RH |
2533 | else |
2534 | strsz = 0; | |
fd361982 | 2535 | nsyms = bfd_section_size (sec) / 12 - 1; |
252b5132 RH |
2536 | |
2537 | p = seg_info (sec)->stabu.p; | |
9c2799c2 | 2538 | gas_assert (p != 0); |
252b5132 | 2539 | |
dbe2df79 AM |
2540 | bfd_h_put_16 (abfd, nsyms, p + 6); |
2541 | bfd_h_put_32 (abfd, strsz, p + 8); | |
e1fa0163 | 2542 | free (name); |
252b5132 RH |
2543 | } |
2544 | ||
2545 | #ifdef NEED_ECOFF_DEBUG | |
2546 | ||
2547 | /* This function is called by the ECOFF code. It is supposed to | |
2548 | record the external symbol information so that the backend can | |
2549 | write it out correctly. The ELF backend doesn't actually handle | |
2550 | this at the moment, so we do it ourselves. We save the information | |
2551 | in the symbol. */ | |
2552 | ||
ae4a729b AM |
2553 | #ifdef OBJ_MAYBE_ELF |
2554 | static | |
2555 | #endif | |
252b5132 | 2556 | void |
dbe2df79 | 2557 | elf_ecoff_set_ext (symbolS *sym, struct ecoff_extr *ext) |
252b5132 | 2558 | { |
dbe2df79 | 2559 | symbol_get_bfdsym (sym)->udata.p = ext; |
252b5132 RH |
2560 | } |
2561 | ||
2562 | /* This function is called by bfd_ecoff_debug_externals. It is | |
2563 | supposed to *EXT to the external symbol information, and return | |
2564 | whether the symbol should be used at all. */ | |
2565 | ||
5b7c81bd | 2566 | static bool |
dbe2df79 | 2567 | elf_get_extr (asymbol *sym, EXTR *ext) |
252b5132 RH |
2568 | { |
2569 | if (sym->udata.p == NULL) | |
5b7c81bd | 2570 | return false; |
252b5132 | 2571 | *ext = *(EXTR *) sym->udata.p; |
5b7c81bd | 2572 | return true; |
252b5132 RH |
2573 | } |
2574 | ||
2575 | /* This function is called by bfd_ecoff_debug_externals. It has | |
2576 | nothing to do for ELF. */ | |
2577 | ||
252b5132 | 2578 | static void |
dbe2df79 AM |
2579 | elf_set_index (asymbol *sym ATTRIBUTE_UNUSED, |
2580 | bfd_size_type indx ATTRIBUTE_UNUSED) | |
252b5132 RH |
2581 | { |
2582 | } | |
2583 | ||
2584 | #endif /* NEED_ECOFF_DEBUG */ | |
2585 | ||
2586 | void | |
dbe2df79 | 2587 | elf_frob_symbol (symbolS *symp, int *puntp) |
252b5132 | 2588 | { |
49309057 | 2589 | struct elf_obj_sy *sy_obj; |
49002d7f | 2590 | expressionS *size; |
6914be53 | 2591 | struct elf_versioned_name_list *versioned_name; |
49309057 | 2592 | |
252b5132 RH |
2593 | #ifdef NEED_ECOFF_DEBUG |
2594 | if (ECOFF_DEBUGGING) | |
2595 | ecoff_frob_symbol (symp); | |
2596 | #endif | |
2597 | ||
49309057 ILT |
2598 | sy_obj = symbol_get_obj (symp); |
2599 | ||
49002d7f L |
2600 | size = sy_obj->size; |
2601 | if (size != NULL) | |
252b5132 | 2602 | { |
49002d7f L |
2603 | if (resolve_expression (size) |
2604 | && size->X_op == O_constant) | |
2605 | S_SET_SIZE (symp, size->X_add_number); | |
e1e90034 | 2606 | else |
49002d7f | 2607 | { |
a90fb5e3 | 2608 | if (!flag_allow_nonconst_size) |
869fe6ea AM |
2609 | as_bad (_(".size expression for %s " |
2610 | "does not evaluate to a constant"), S_GET_NAME (symp)); | |
21be61f5 | 2611 | else |
869fe6ea AM |
2612 | as_warn (_(".size expression for %s " |
2613 | "does not evaluate to a constant"), S_GET_NAME (symp)); | |
49002d7f | 2614 | } |
49309057 ILT |
2615 | free (sy_obj->size); |
2616 | sy_obj->size = NULL; | |
252b5132 RH |
2617 | } |
2618 | ||
6914be53 L |
2619 | versioned_name = sy_obj->versioned_name; |
2620 | if (versioned_name) | |
252b5132 RH |
2621 | { |
2622 | /* This symbol was given a new name with the .symver directive. | |
13c56984 AM |
2623 | If this is an external reference, just rename the symbol to |
2624 | include the version string. This will make the relocs be | |
6914be53 | 2625 | against the correct versioned symbol. */ |
252b5132 | 2626 | |
6914be53 L |
2627 | /* We will have already reported an version error. */ |
2628 | if (sy_obj->bad_version) | |
5b7c81bd | 2629 | *puntp = true; |
6914be53 L |
2630 | /* elf_frob_file_before_adjust only allows one version symbol for |
2631 | renamed symbol. */ | |
2632 | else if (sy_obj->rename) | |
2633 | S_SET_NAME (symp, versioned_name->name); | |
2634 | else if (S_IS_COMMON (symp)) | |
252b5132 | 2635 | { |
6914be53 L |
2636 | as_bad (_("`%s' can't be versioned to common symbol '%s'"), |
2637 | versioned_name->name, S_GET_NAME (symp)); | |
5b7c81bd | 2638 | *puntp = true; |
252b5132 RH |
2639 | } |
2640 | else | |
2641 | { | |
6914be53 L |
2642 | asymbol *bfdsym; |
2643 | elf_symbol_type *elfsym; | |
2644 | ||
2645 | /* This is a definition. Add an alias for each version. | |
2646 | FIXME: Using an alias will permit the debugging information | |
2647 | to refer to the right symbol. However, it's not clear | |
2648 | whether it is the best approach. */ | |
2649 | ||
2650 | /* FIXME: Creating a new symbol here is risky. We're | |
2651 | in the final loop over the symbol table. We can | |
2652 | get away with it only because the symbol goes to | |
2653 | the end of the list, where the loop will still see | |
2654 | it. It would probably be better to do this in | |
2655 | obj_frob_file_before_adjust. */ | |
2656 | for (; versioned_name != NULL; | |
2657 | versioned_name = versioned_name->next) | |
79082ff0 | 2658 | { |
6914be53 | 2659 | symbolS *symp2 = symbol_find_or_make (versioned_name->name); |
252b5132 | 2660 | |
79082ff0 | 2661 | S_SET_SEGMENT (symp2, S_GET_SEGMENT (symp)); |
252b5132 | 2662 | |
79082ff0 L |
2663 | /* Subtracting out the frag address here is a hack |
2664 | because we are in the middle of the final loop. */ | |
2665 | S_SET_VALUE (symp2, | |
2666 | (S_GET_VALUE (symp) | |
05862db7 CE |
2667 | - (symbol_get_frag (symp)->fr_address |
2668 | / OCTETS_PER_BYTE))); | |
252b5132 | 2669 | |
79082ff0 | 2670 | symbol_set_frag (symp2, symbol_get_frag (symp)); |
252b5132 | 2671 | |
79082ff0 L |
2672 | /* This will copy over the size information. */ |
2673 | copy_symbol_attributes (symp2, symp); | |
252b5132 | 2674 | |
26eb4093 JJ |
2675 | S_SET_OTHER (symp2, S_GET_OTHER (symp)); |
2676 | ||
79082ff0 L |
2677 | if (S_IS_WEAK (symp)) |
2678 | S_SET_WEAK (symp2); | |
252b5132 | 2679 | |
79082ff0 L |
2680 | if (S_IS_EXTERNAL (symp)) |
2681 | S_SET_EXTERNAL (symp2); | |
2682 | } | |
6914be53 | 2683 | |
eb09df16 | 2684 | switch (sy_obj->visibility) |
6914be53 L |
2685 | { |
2686 | case visibility_unchanged: | |
2687 | break; | |
2688 | case visibility_hidden: | |
2689 | bfdsym = symbol_get_bfdsym (symp); | |
c1229f84 | 2690 | elfsym = elf_symbol_from (bfdsym); |
6914be53 L |
2691 | elfsym->internal_elf_sym.st_other &= ~3; |
2692 | elfsym->internal_elf_sym.st_other |= STV_HIDDEN; | |
2693 | break; | |
2694 | case visibility_remove: | |
eb09df16 L |
2695 | /* Don't remove the symbol if it is used in relocation. |
2696 | Instead, mark it as to be removed and issue an error | |
2697 | if the symbol has more than one versioned name. */ | |
2698 | if (symbol_used_in_reloc_p (symp)) | |
2699 | { | |
2700 | if (sy_obj->versioned_name->next != NULL) | |
2701 | as_bad (_("symbol '%s' with multiple versions cannot be used in relocation"), | |
2702 | S_GET_NAME (symp)); | |
2703 | symbol_mark_removed (symp); | |
2704 | } | |
2705 | else | |
2706 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
6914be53 L |
2707 | break; |
2708 | case visibility_local: | |
2709 | S_CLEAR_EXTERNAL (symp); | |
2710 | break; | |
2711 | } | |
252b5132 RH |
2712 | } |
2713 | } | |
2714 | ||
2715 | /* Double check weak symbols. */ | |
49309057 | 2716 | if (S_IS_WEAK (symp)) |
252b5132 RH |
2717 | { |
2718 | if (S_IS_COMMON (symp)) | |
6ce8b369 | 2719 | as_bad (_("symbol `%s' can not be both weak and common"), |
252b5132 RH |
2720 | S_GET_NAME (symp)); |
2721 | } | |
252b5132 RH |
2722 | } |
2723 | ||
eb09df16 L |
2724 | /* Fix up SYMPP which has been marked to be removed by .symver. */ |
2725 | ||
2726 | void | |
2727 | elf_fixup_removed_symbol (symbolS **sympp) | |
2728 | { | |
2729 | symbolS *symp = *sympp; | |
2730 | struct elf_obj_sy *sy_obj = symbol_get_obj (symp); | |
2731 | ||
2732 | /* Replace the removed symbol with the versioned symbol. */ | |
2733 | symp = symbol_find (sy_obj->versioned_name->name); | |
2734 | *sympp = symp; | |
2735 | } | |
2736 | ||
060adf0e AM |
2737 | struct group_list |
2738 | { | |
2739 | asection **head; /* Section lists. */ | |
060adf0e | 2740 | unsigned int num_group; /* Number of lists. */ |
629310ab | 2741 | htab_t indexes; /* Maps group name to index in head array. */ |
060adf0e AM |
2742 | }; |
2743 | ||
db4677b8 AM |
2744 | static struct group_list groups; |
2745 | ||
060adf0e AM |
2746 | /* Called via bfd_map_over_sections. If SEC is a member of a group, |
2747 | add it to a list of sections belonging to the group. INF is a | |
2748 | pointer to a struct group_list, which is where we store the head of | |
b7d07216 L |
2749 | each list. If its link_to_symbol_name isn't NULL, set up its |
2750 | linked-to section. */ | |
060adf0e AM |
2751 | |
2752 | static void | |
b7d07216 L |
2753 | build_additional_section_info (bfd *abfd ATTRIBUTE_UNUSED, |
2754 | asection *sec, void *inf) | |
060adf0e | 2755 | { |
1e9cc1c2 | 2756 | struct group_list *list = (struct group_list *) inf; |
aa1f4858 | 2757 | const char *group_name = elf_group_name (sec); |
060adf0e | 2758 | unsigned int i; |
1e9cc1c2 NC |
2759 | unsigned int *elem_idx; |
2760 | unsigned int *idx_ptr; | |
060adf0e | 2761 | |
b7d07216 L |
2762 | if (sec->map_head.linked_to_symbol_name) |
2763 | { | |
2764 | symbolS *linked_to_sym; | |
2765 | linked_to_sym = symbol_find (sec->map_head.linked_to_symbol_name); | |
2766 | if (!linked_to_sym || !S_IS_DEFINED (linked_to_sym)) | |
2767 | as_bad (_("undefined linked-to symbol `%s' on section `%s'"), | |
2768 | sec->map_head.linked_to_symbol_name, | |
2769 | bfd_section_name (sec)); | |
2770 | else | |
2771 | elf_linked_to_section (sec) = S_GET_SEGMENT (linked_to_sym); | |
2772 | } | |
2773 | ||
060adf0e AM |
2774 | if (group_name == NULL) |
2775 | return; | |
2776 | ||
2777 | /* If this group already has a list, add the section to the head of | |
2778 | the list. */ | |
629310ab | 2779 | elem_idx = (unsigned int *) str_hash_find (list->indexes, group_name); |
1e9cc1c2 | 2780 | if (elem_idx != NULL) |
060adf0e | 2781 | { |
1e9cc1c2 NC |
2782 | elf_next_in_group (sec) = list->head[*elem_idx]; |
2783 | list->head[*elem_idx] = sec; | |
1e9cc1c2 | 2784 | return; |
060adf0e AM |
2785 | } |
2786 | ||
2787 | /* New group. Make the arrays bigger in chunks to minimize calls to | |
2788 | realloc. */ | |
2789 | i = list->num_group; | |
2790 | if ((i & 127) == 0) | |
2791 | { | |
2792 | unsigned int newsize = i + 128; | |
add39d23 | 2793 | list->head = XRESIZEVEC (asection *, list->head, newsize); |
060adf0e AM |
2794 | } |
2795 | list->head[i] = sec; | |
060adf0e | 2796 | list->num_group += 1; |
1e9cc1c2 NC |
2797 | |
2798 | /* Add index to hash. */ | |
325801bd | 2799 | idx_ptr = XNEW (unsigned int); |
1e9cc1c2 | 2800 | *idx_ptr = i; |
fe0e921f | 2801 | str_hash_insert (list->indexes, group_name, idx_ptr, 0); |
1e9cc1c2 NC |
2802 | } |
2803 | ||
2ccd2276 AM |
2804 | static void |
2805 | free_section_idx (void *ent) | |
1e9cc1c2 | 2806 | { |
2ccd2276 AM |
2807 | string_tuple_t *tuple = ent; |
2808 | free ((char *) tuple->value); | |
060adf0e AM |
2809 | } |
2810 | ||
db4677b8 AM |
2811 | /* Create symbols for group signature. */ |
2812 | ||
252b5132 | 2813 | void |
709001e9 | 2814 | elf_adjust_symtab (void) |
252b5132 | 2815 | { |
060adf0e AM |
2816 | unsigned int i; |
2817 | ||
060adf0e | 2818 | /* Go find section groups. */ |
db4677b8 AM |
2819 | groups.num_group = 0; |
2820 | groups.head = NULL; | |
2ccd2276 AM |
2821 | groups.indexes = htab_create_alloc (16, hash_string_tuple, eq_string_tuple, |
2822 | free_section_idx, notes_calloc, NULL); | |
b7d07216 L |
2823 | bfd_map_over_sections (stdoutput, build_additional_section_info, |
2824 | &groups); | |
3739860c | 2825 | |
060adf0e AM |
2826 | /* Make the SHT_GROUP sections that describe each section group. We |
2827 | can't set up the section contents here yet, because elf section | |
2828 | indices have yet to be calculated. elf.c:set_group_contents does | |
2829 | the rest of the work. */ | |
db4677b8 | 2830 | for (i = 0; i < groups.num_group; i++) |
060adf0e | 2831 | { |
db4677b8 | 2832 | const char *group_name = elf_group_name (groups.head[i]); |
9758f3fc | 2833 | const char *sec_name; |
060adf0e AM |
2834 | asection *s; |
2835 | flagword flags; | |
9758f3fc | 2836 | struct symbol *sy; |
060adf0e | 2837 | |
060adf0e | 2838 | flags = SEC_READONLY | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_GROUP; |
db4677b8 | 2839 | for (s = groups.head[i]; s != NULL; s = elf_next_in_group (s)) |
68bfbfcc | 2840 | if ((s->flags ^ flags) & SEC_LINK_ONCE) |
d2dab548 AM |
2841 | { |
2842 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
db4677b8 | 2843 | if (s != groups.head[i]) |
d2dab548 AM |
2844 | { |
2845 | as_warn (_("assuming all members of group `%s' are COMDAT"), | |
2846 | group_name); | |
2847 | break; | |
2848 | } | |
2849 | } | |
2850 | ||
709001e9 | 2851 | sec_name = ".group"; |
9758f3fc | 2852 | s = subseg_force_new (sec_name, 0); |
060adf0e | 2853 | if (s == NULL |
fd361982 AM |
2854 | || !bfd_set_section_flags (s, flags) |
2855 | || !bfd_set_section_alignment (s, 2)) | |
060adf0e AM |
2856 | { |
2857 | as_fatal (_("can't create group: %s"), | |
2858 | bfd_errmsg (bfd_get_error ())); | |
2859 | } | |
2f89ff8d | 2860 | elf_section_type (s) = SHT_GROUP; |
060adf0e | 2861 | |
aa1f4858 | 2862 | /* Pass a pointer to the first section in this group. */ |
db4677b8 AM |
2863 | elf_next_in_group (s) = groups.head[i]; |
2864 | elf_sec_group (groups.head[i]) = s; | |
709001e9 MM |
2865 | /* Make sure that the signature symbol for the group has the |
2866 | name of the group. */ | |
2867 | sy = symbol_find_exact (group_name); | |
8d1015a8 | 2868 | if (!sy || !symbol_on_chain (sy, symbol_rootP, symbol_lastP)) |
709001e9 MM |
2869 | { |
2870 | /* Create the symbol now. */ | |
e01e1cee | 2871 | sy = symbol_new (group_name, now_seg, frag_now, 0); |
69b70cfe RO |
2872 | #ifdef TE_SOLARIS |
2873 | /* Before Solaris 11 build 154, Sun ld rejects local group | |
2874 | signature symbols, so make them weak hidden instead. */ | |
2875 | symbol_get_bfdsym (sy)->flags |= BSF_WEAK; | |
2876 | S_SET_OTHER (sy, STV_HIDDEN); | |
2877 | #else | |
709001e9 | 2878 | symbol_get_obj (sy)->local = 1; |
69b70cfe | 2879 | #endif |
709001e9 MM |
2880 | symbol_table_insert (sy); |
2881 | } | |
2882 | elf_group_id (s) = symbol_get_bfdsym (sy); | |
d1bcae83 L |
2883 | /* Mark the group signature symbol as used so that it will be |
2884 | included in the symbol table. */ | |
2885 | symbol_mark_used_in_reloc (sy); | |
060adf0e | 2886 | } |
252b5132 RH |
2887 | } |
2888 | ||
709001e9 MM |
2889 | void |
2890 | elf_frob_file (void) | |
2891 | { | |
2892 | bfd_map_over_sections (stdoutput, adjust_stab_sections, NULL); | |
2893 | ||
2894 | #ifdef elf_tc_final_processing | |
2895 | elf_tc_final_processing (); | |
2896 | #endif | |
2897 | } | |
2898 | ||
4a1805b1 | 2899 | /* It removes any unneeded versioned symbols from the symbol table. */ |
339681c0 L |
2900 | |
2901 | void | |
dbe2df79 | 2902 | elf_frob_file_before_adjust (void) |
339681c0 L |
2903 | { |
2904 | if (symbol_rootP) | |
2905 | { | |
2906 | symbolS *symp; | |
2907 | ||
2908 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) | |
6914be53 L |
2909 | { |
2910 | struct elf_obj_sy *sy_obj = symbol_get_obj (symp); | |
2911 | int is_defined = !!S_IS_DEFINED (symp); | |
00e6e13d | 2912 | |
6914be53 L |
2913 | if (sy_obj->versioned_name) |
2914 | { | |
2915 | char *p = strchr (sy_obj->versioned_name->name, | |
2916 | ELF_VER_CHR); | |
00e6e13d | 2917 | |
6914be53 L |
2918 | if (sy_obj->rename) |
2919 | { | |
2920 | /* The @@@ syntax is a special case. If the symbol is | |
2921 | not defined, 2 `@'s will be removed from the | |
2922 | versioned_name. Otherwise, 1 `@' will be removed. */ | |
2923 | size_t l = strlen (&p[3]) + 1; | |
2924 | memmove (&p[1 + is_defined], &p[3], l); | |
2925 | } | |
2926 | ||
2927 | if (!is_defined) | |
2928 | { | |
2929 | /* Verify that the name isn't using the @@ syntax--this | |
2930 | is reserved for definitions of the default version | |
2931 | to link against. */ | |
2932 | if (!sy_obj->rename && p[1] == ELF_VER_CHR) | |
2933 | { | |
2934 | as_bad (_("invalid attempt to declare external " | |
2935 | "version name as default in symbol `%s'"), | |
2936 | sy_obj->versioned_name->name); | |
2937 | return; | |
2938 | } | |
2939 | ||
2940 | /* Only one version symbol is allowed for undefined | |
2941 | symbol. */ | |
2942 | if (sy_obj->versioned_name->next) | |
2943 | { | |
2944 | as_bad (_("multiple versions [`%s'|`%s'] for " | |
2945 | "symbol `%s'"), | |
2946 | sy_obj->versioned_name->name, | |
2947 | sy_obj->versioned_name->next->name, | |
2948 | S_GET_NAME (symp)); | |
2949 | return; | |
2950 | } | |
2951 | ||
5b7c81bd | 2952 | sy_obj->rename = true; |
6914be53 L |
2953 | } |
2954 | } | |
2955 | ||
2956 | /* If there was .symver or .weak, but symbol was neither | |
2957 | defined nor used anywhere, remove it. */ | |
2958 | if (!is_defined | |
2959 | && (sy_obj->versioned_name || S_IS_WEAK (symp)) | |
2960 | && symbol_used_p (symp) == 0 | |
2961 | && symbol_used_in_reloc_p (symp) == 0) | |
2962 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
2963 | } | |
339681c0 L |
2964 | } |
2965 | } | |
2966 | ||
252b5132 RH |
2967 | /* It is required that we let write_relocs have the opportunity to |
2968 | optimize away fixups before output has begun, since it is possible | |
2969 | to eliminate all fixups for a section and thus we never should | |
2970 | have generated the relocation section. */ | |
2971 | ||
2972 | void | |
dbe2df79 | 2973 | elf_frob_file_after_relocs (void) |
252b5132 | 2974 | { |
db4677b8 AM |
2975 | unsigned int i; |
2976 | ||
2977 | /* Set SHT_GROUP section size. */ | |
2978 | for (i = 0; i < groups.num_group; i++) | |
2979 | { | |
2980 | asection *s, *head, *group; | |
2981 | bfd_size_type size; | |
2982 | ||
2983 | head = groups.head[i]; | |
2984 | size = 4; | |
2985 | for (s = head; s != NULL; s = elf_next_in_group (s)) | |
2986 | size += (s->flags & SEC_RELOC) != 0 ? 8 : 4; | |
2987 | ||
2988 | group = elf_sec_group (head); | |
2989 | subseg_set (group, 0); | |
fd361982 | 2990 | bfd_set_section_size (group, size); |
db4677b8 AM |
2991 | group->contents = (unsigned char *) frag_more (size); |
2992 | frag_now->fr_fix = frag_now_fix_octets (); | |
2993 | frag_wane (frag_now); | |
2994 | } | |
2995 | ||
252b5132 RH |
2996 | #ifdef NEED_ECOFF_DEBUG |
2997 | if (ECOFF_DEBUGGING) | |
2998 | /* Generate the ECOFF debugging information. */ | |
2999 | { | |
3000 | const struct ecoff_debug_swap *debug_swap; | |
3001 | struct ecoff_debug_info debug; | |
3002 | char *buf; | |
3003 | asection *sec; | |
3004 | ||
3005 | debug_swap | |
3006 | = get_elf_backend_data (stdoutput)->elf_backend_ecoff_debug_swap; | |
dbe2df79 | 3007 | know (debug_swap != NULL); |
252b5132 RH |
3008 | ecoff_build_debug (&debug.symbolic_header, &buf, debug_swap); |
3009 | ||
3010 | /* Set up the pointers in debug. */ | |
ce3ab55f | 3011 | debug.alloc_syments = true; |
252b5132 RH |
3012 | #define SET(ptr, offset, type) \ |
3013 | debug.ptr = (type) (buf + debug.symbolic_header.offset) | |
3014 | ||
3015 | SET (line, cbLineOffset, unsigned char *); | |
dbe2df79 AM |
3016 | SET (external_dnr, cbDnOffset, void *); |
3017 | SET (external_pdr, cbPdOffset, void *); | |
3018 | SET (external_sym, cbSymOffset, void *); | |
3019 | SET (external_opt, cbOptOffset, void *); | |
252b5132 RH |
3020 | SET (external_aux, cbAuxOffset, union aux_ext *); |
3021 | SET (ss, cbSsOffset, char *); | |
dbe2df79 AM |
3022 | SET (external_fdr, cbFdOffset, void *); |
3023 | SET (external_rfd, cbRfdOffset, void *); | |
252b5132 RH |
3024 | /* ssext and external_ext are set up just below. */ |
3025 | ||
3026 | #undef SET | |
3027 | ||
3028 | /* Set up the external symbols. */ | |
3029 | debug.ssext = debug.ssext_end = NULL; | |
3030 | debug.external_ext = debug.external_ext_end = NULL; | |
5b7c81bd | 3031 | if (! bfd_ecoff_debug_externals (stdoutput, &debug, debug_swap, true, |
252b5132 | 3032 | elf_get_extr, elf_set_index)) |
6ce8b369 | 3033 | as_fatal (_("failed to set up debugging information: %s"), |
252b5132 RH |
3034 | bfd_errmsg (bfd_get_error ())); |
3035 | ||
3036 | sec = bfd_get_section_by_name (stdoutput, ".mdebug"); | |
9c2799c2 | 3037 | gas_assert (sec != NULL); |
252b5132 | 3038 | |
b34976b6 | 3039 | know (!stdoutput->output_has_begun); |
252b5132 RH |
3040 | |
3041 | /* We set the size of the section, call bfd_set_section_contents | |
3042 | to force the ELF backend to allocate a file position, and then | |
3043 | write out the data. FIXME: Is this really the best way to do | |
3044 | this? */ | |
fd361982 AM |
3045 | bfd_set_section_size (sec, bfd_ecoff_debug_size (stdoutput, &debug, |
3046 | debug_swap)); | |
252b5132 | 3047 | |
5f91fe03 | 3048 | /* Pass BUF to bfd_set_section_contents because this will |
13c56984 AM |
3049 | eventually become a call to fwrite, and ISO C prohibits |
3050 | passing a NULL pointer to a stdio function even if the | |
3051 | pointer will not be used. */ | |
dbe2df79 | 3052 | if (! bfd_set_section_contents (stdoutput, sec, buf, 0, 0)) |
6ce8b369 | 3053 | as_fatal (_("can't start writing .mdebug section: %s"), |
252b5132 RH |
3054 | bfd_errmsg (bfd_get_error ())); |
3055 | ||
b34976b6 | 3056 | know (stdoutput->output_has_begun); |
252b5132 RH |
3057 | know (sec->filepos != 0); |
3058 | ||
3059 | if (! bfd_ecoff_write_debug (stdoutput, &debug, debug_swap, | |
3060 | sec->filepos)) | |
6ce8b369 | 3061 | as_fatal (_("could not write .mdebug section: %s"), |
252b5132 RH |
3062 | bfd_errmsg (bfd_get_error ())); |
3063 | } | |
3064 | #endif /* NEED_ECOFF_DEBUG */ | |
3065 | } | |
3066 | ||
bc6b4acc RO |
3067 | static void |
3068 | elf_generate_asm_lineno (void) | |
3069 | { | |
3070 | #ifdef NEED_ECOFF_DEBUG | |
3071 | if (ECOFF_DEBUGGING) | |
3072 | ecoff_generate_asm_lineno (); | |
3073 | #endif | |
3074 | } | |
3075 | ||
3076 | static void | |
bd937d21 L |
3077 | elf_process_stab (segT sec ATTRIBUTE_UNUSED, |
3078 | int what ATTRIBUTE_UNUSED, | |
3079 | const char *string ATTRIBUTE_UNUSED, | |
3080 | int type ATTRIBUTE_UNUSED, | |
3081 | int other ATTRIBUTE_UNUSED, | |
3082 | int desc ATTRIBUTE_UNUSED) | |
bc6b4acc RO |
3083 | { |
3084 | #ifdef NEED_ECOFF_DEBUG | |
3085 | if (ECOFF_DEBUGGING) | |
3086 | ecoff_stab (sec, what, string, type, other, desc); | |
3087 | #endif | |
3088 | } | |
3089 | ||
5110c57e | 3090 | static int |
dbe2df79 | 3091 | elf_separate_stab_sections (void) |
5110c57e HPN |
3092 | { |
3093 | #ifdef NEED_ECOFF_DEBUG | |
3094 | return (!ECOFF_DEBUGGING); | |
3095 | #else | |
3096 | return 1; | |
3097 | #endif | |
3098 | } | |
3099 | ||
3100 | static void | |
dbe2df79 | 3101 | elf_init_stab_section (segT seg) |
5110c57e HPN |
3102 | { |
3103 | #ifdef NEED_ECOFF_DEBUG | |
3104 | if (!ECOFF_DEBUGGING) | |
3105 | #endif | |
3106 | obj_elf_init_stab_section (seg); | |
3107 | } | |
3108 | ||
2ccd2276 AM |
3109 | /* This is called when the assembler starts. */ |
3110 | ||
3111 | void | |
3112 | elf_begin (void) | |
3113 | { | |
3114 | asection *s; | |
3115 | ||
3116 | /* Add symbols for the known sections to the symbol table. */ | |
3117 | s = bfd_get_section_by_name (stdoutput, TEXT_SECTION_NAME); | |
3118 | symbol_table_insert (section_symbol (s)); | |
3119 | s = bfd_get_section_by_name (stdoutput, DATA_SECTION_NAME); | |
3120 | symbol_table_insert (section_symbol (s)); | |
3121 | s = bfd_get_section_by_name (stdoutput, BSS_SECTION_NAME); | |
3122 | symbol_table_insert (section_symbol (s)); | |
3123 | elf_com_section_ptr = bfd_com_section_ptr; | |
3124 | previous_section = NULL; | |
3125 | previous_subsection = 0; | |
3126 | comment_section = NULL; | |
3127 | memset (&groups, 0, sizeof (groups)); | |
3128 | } | |
3129 | ||
3130 | void | |
3131 | elf_end (void) | |
3132 | { | |
3133 | while (section_stack) | |
3134 | { | |
3135 | struct section_stack *top = section_stack; | |
3136 | section_stack = top->next; | |
3137 | free (top); | |
3138 | } | |
3139 | while (recorded_attributes) | |
3140 | { | |
3141 | struct recorded_attribute_info *rai = recorded_attributes; | |
3142 | recorded_attributes = rai->next; | |
3143 | free (rai); | |
3144 | } | |
3145 | if (groups.indexes) | |
3146 | { | |
3147 | htab_delete (groups.indexes); | |
3148 | free (groups.head); | |
3149 | } | |
3150 | } | |
3151 | ||
252b5132 RH |
3152 | const struct format_ops elf_format_ops = |
3153 | { | |
3154 | bfd_target_elf_flavour, | |
4c63da97 AM |
3155 | 0, /* dfl_leading_underscore */ |
3156 | 1, /* emit_section_symbols */ | |
5110c57e | 3157 | elf_begin, |
2ccd2276 | 3158 | elf_end, |
5110c57e | 3159 | elf_file_symbol, |
252b5132 RH |
3160 | elf_frob_symbol, |
3161 | elf_frob_file, | |
339681c0 | 3162 | elf_frob_file_before_adjust, |
a161fe53 | 3163 | 0, /* obj_frob_file_before_fix */ |
252b5132 RH |
3164 | elf_frob_file_after_relocs, |
3165 | elf_s_get_size, elf_s_set_size, | |
3166 | elf_s_get_align, elf_s_set_align, | |
4c63da97 | 3167 | elf_s_get_other, |
5110c57e | 3168 | elf_s_set_other, |
4c63da97 | 3169 | 0, /* s_get_desc */ |
5110c57e HPN |
3170 | 0, /* s_set_desc */ |
3171 | 0, /* s_get_type */ | |
3172 | 0, /* s_set_type */ | |
252b5132 | 3173 | elf_copy_symbol_attributes, |
bc6b4acc RO |
3174 | elf_generate_asm_lineno, |
3175 | elf_process_stab, | |
5110c57e HPN |
3176 | elf_separate_stab_sections, |
3177 | elf_init_stab_section, | |
252b5132 RH |
3178 | elf_sec_sym_ok_for_reloc, |
3179 | elf_pop_insert, | |
3180 | #ifdef NEED_ECOFF_DEBUG | |
3181 | elf_ecoff_set_ext, | |
3182 | #else | |
4c63da97 | 3183 | 0, /* ecoff_set_ext */ |
252b5132 | 3184 | #endif |
4c63da97 | 3185 | elf_obj_read_begin_hook, |
4cae74aa | 3186 | elf_obj_symbol_new_hook, |
7bed8466 | 3187 | elf_obj_symbol_clone_hook, |
645ea3ea | 3188 | elf_adjust_symtab |
252b5132 | 3189 | }; |