Commit | Line | Data |
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252b5132 | 1 | /* ELF object file format |
b3adc24a | 2 | Copyright (C) 1992-2020 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); |
252b5132 RH |
81 | |
82 | static const pseudo_typeS elf_pseudo_table[] = | |
83 | { | |
84 | {"comm", obj_elf_common, 0}, | |
9be1cda6 | 85 | {"common", obj_elf_common, 1}, |
252b5132 | 86 | {"ident", obj_elf_ident, 0}, |
13c56984 | 87 | {"lcomm", obj_elf_lcomm, 0}, |
252b5132 RH |
88 | {"local", obj_elf_local, 0}, |
89 | {"previous", obj_elf_previous, 0}, | |
90 | {"section", obj_elf_section, 0}, | |
91 | {"section.s", obj_elf_section, 0}, | |
92 | {"sect", obj_elf_section, 0}, | |
93 | {"sect.s", obj_elf_section, 0}, | |
9de8d8f1 RH |
94 | {"pushsection", obj_elf_section, 1}, |
95 | {"popsection", obj_elf_popsection, 0}, | |
252b5132 RH |
96 | {"size", obj_elf_size, 0}, |
97 | {"type", obj_elf_type, 0}, | |
98 | {"version", obj_elf_version, 0}, | |
99 | {"weak", obj_elf_weak, 0}, | |
100 | ||
bf514e21 | 101 | /* These define symbol visibility. */ |
2e13b764 NC |
102 | {"internal", obj_elf_visibility, STV_INTERNAL}, |
103 | {"hidden", obj_elf_visibility, STV_HIDDEN}, | |
104 | {"protected", obj_elf_visibility, STV_PROTECTED}, | |
105 | ||
252b5132 RH |
106 | /* These are used for stabs-in-elf configurations. */ |
107 | {"line", obj_elf_line, 0}, | |
108 | ||
109 | /* This is a GNU extension to handle symbol versions. */ | |
110 | {"symver", obj_elf_symver, 0}, | |
111 | ||
112 | /* A GNU extension to change subsection only. */ | |
113 | {"subsection", obj_elf_subsection, 0}, | |
114 | ||
115 | /* These are GNU extensions to aid in garbage collecting C++ vtables. */ | |
68d20676 NC |
116 | {"vtable_inherit", obj_elf_vtable_inherit, 0}, |
117 | {"vtable_entry", obj_elf_vtable_entry, 0}, | |
252b5132 | 118 | |
0420f52b MR |
119 | /* A GNU extension for object attributes. */ |
120 | {"gnu_attribute", obj_elf_gnu_attribute, 0}, | |
121 | ||
bf514e21 | 122 | /* These are used for dwarf. */ |
252b5132 RH |
123 | {"2byte", cons, 2}, |
124 | {"4byte", cons, 4}, | |
125 | {"8byte", cons, 8}, | |
87ccc1b0 | 126 | /* These are used for dwarf2. */ |
68d20676 | 127 | { "file", dwarf2_directive_file, 0 }, |
87ccc1b0 | 128 | { "loc", dwarf2_directive_loc, 0 }, |
07a53e5c | 129 | { "loc_mark_labels", dwarf2_directive_loc_mark_labels, 0 }, |
252b5132 RH |
130 | |
131 | /* We need to trap the section changing calls to handle .previous. */ | |
132 | {"data", obj_elf_data, 0}, | |
8fe53b44 JB |
133 | {"offset", obj_elf_struct, 0}, |
134 | {"struct", obj_elf_struct, 0}, | |
252b5132 RH |
135 | {"text", obj_elf_text, 0}, |
136 | ||
13ae64f3 JJ |
137 | {"tls_common", obj_elf_tls_common, 0}, |
138 | ||
252b5132 | 139 | /* End sentinel. */ |
ab9da554 | 140 | {NULL, NULL, 0}, |
252b5132 RH |
141 | }; |
142 | ||
143 | static const pseudo_typeS ecoff_debug_pseudo_table[] = | |
144 | { | |
145 | #ifdef NEED_ECOFF_DEBUG | |
146 | /* COFF style debugging information for ECOFF. .ln is not used; .loc | |
147 | is used instead. */ | |
148 | { "def", ecoff_directive_def, 0 }, | |
149 | { "dim", ecoff_directive_dim, 0 }, | |
150 | { "endef", ecoff_directive_endef, 0 }, | |
151 | { "file", ecoff_directive_file, 0 }, | |
152 | { "scl", ecoff_directive_scl, 0 }, | |
153 | { "tag", ecoff_directive_tag, 0 }, | |
154 | { "val", ecoff_directive_val, 0 }, | |
155 | ||
156 | /* COFF debugging requires pseudo-ops .size and .type, but ELF | |
157 | already has meanings for those. We use .esize and .etype | |
158 | instead. These are only generated by gcc anyhow. */ | |
159 | { "esize", ecoff_directive_size, 0 }, | |
160 | { "etype", ecoff_directive_type, 0 }, | |
161 | ||
162 | /* ECOFF specific debugging information. */ | |
37f9ec62 | 163 | { "aent", ecoff_directive_ent, 1 }, |
252b5132 RH |
164 | { "begin", ecoff_directive_begin, 0 }, |
165 | { "bend", ecoff_directive_bend, 0 }, | |
166 | { "end", ecoff_directive_end, 0 }, | |
167 | { "ent", ecoff_directive_ent, 0 }, | |
168 | { "fmask", ecoff_directive_fmask, 0 }, | |
169 | { "frame", ecoff_directive_frame, 0 }, | |
170 | { "loc", ecoff_directive_loc, 0 }, | |
171 | { "mask", ecoff_directive_mask, 0 }, | |
172 | ||
173 | /* Other ECOFF directives. */ | |
174 | { "extern", ecoff_directive_extern, 0 }, | |
175 | ||
176 | /* These are used on Irix. I don't know how to implement them. */ | |
177 | { "alias", s_ignore, 0 }, | |
178 | { "bgnb", s_ignore, 0 }, | |
179 | { "endb", s_ignore, 0 }, | |
180 | { "lab", s_ignore, 0 }, | |
181 | { "noalias", s_ignore, 0 }, | |
182 | { "verstamp", s_ignore, 0 }, | |
183 | { "vreg", s_ignore, 0 }, | |
184 | #endif | |
185 | ||
ab9da554 | 186 | {NULL, NULL, 0} /* end sentinel */ |
252b5132 RH |
187 | }; |
188 | ||
189 | #undef NO_RELOC | |
190 | #include "aout/aout64.h" | |
191 | ||
192 | /* This is called when the assembler starts. */ | |
193 | ||
3b22753a L |
194 | asection *elf_com_section_ptr; |
195 | ||
252b5132 | 196 | void |
dbe2df79 | 197 | elf_begin (void) |
252b5132 | 198 | { |
dbe2df79 AM |
199 | asection *s; |
200 | ||
252b5132 | 201 | /* Add symbols for the known sections to the symbol table. */ |
dbe2df79 AM |
202 | s = bfd_get_section_by_name (stdoutput, TEXT_SECTION_NAME); |
203 | symbol_table_insert (section_symbol (s)); | |
204 | s = bfd_get_section_by_name (stdoutput, DATA_SECTION_NAME); | |
205 | symbol_table_insert (section_symbol (s)); | |
206 | s = bfd_get_section_by_name (stdoutput, BSS_SECTION_NAME); | |
207 | symbol_table_insert (section_symbol (s)); | |
3b22753a | 208 | elf_com_section_ptr = bfd_com_section_ptr; |
252b5132 RH |
209 | } |
210 | ||
211 | void | |
dbe2df79 | 212 | elf_pop_insert (void) |
252b5132 RH |
213 | { |
214 | pop_insert (elf_pseudo_table); | |
215 | if (ECOFF_DEBUGGING) | |
216 | pop_insert (ecoff_debug_pseudo_table); | |
217 | } | |
218 | ||
219 | static bfd_vma | |
dbe2df79 | 220 | elf_s_get_size (symbolS *sym) |
252b5132 RH |
221 | { |
222 | return S_GET_SIZE (sym); | |
223 | } | |
224 | ||
225 | static void | |
dbe2df79 | 226 | elf_s_set_size (symbolS *sym, bfd_vma sz) |
252b5132 RH |
227 | { |
228 | S_SET_SIZE (sym, sz); | |
229 | } | |
230 | ||
231 | static bfd_vma | |
dbe2df79 | 232 | elf_s_get_align (symbolS *sym) |
252b5132 RH |
233 | { |
234 | return S_GET_ALIGN (sym); | |
235 | } | |
236 | ||
237 | static void | |
dbe2df79 | 238 | elf_s_set_align (symbolS *sym, bfd_vma align) |
252b5132 RH |
239 | { |
240 | S_SET_ALIGN (sym, align); | |
241 | } | |
242 | ||
4c63da97 | 243 | int |
dbe2df79 | 244 | elf_s_get_other (symbolS *sym) |
4c63da97 AM |
245 | { |
246 | return elf_symbol (symbol_get_bfdsym (sym))->internal_elf_sym.st_other; | |
247 | } | |
248 | ||
5110c57e | 249 | static void |
dbe2df79 | 250 | elf_s_set_other (symbolS *sym, int other) |
5110c57e HPN |
251 | { |
252 | S_SET_OTHER (sym, other); | |
253 | } | |
254 | ||
252b5132 | 255 | static int |
dbe2df79 | 256 | elf_sec_sym_ok_for_reloc (asection *sec) |
252b5132 RH |
257 | { |
258 | return obj_sec_sym_ok_for_reloc (sec); | |
259 | } | |
260 | ||
261 | void | |
c04f5787 | 262 | elf_file_symbol (const char *s, int appfile) |
252b5132 | 263 | { |
8d1015a8 AM |
264 | asymbol *bsym; |
265 | ||
c04f5787 AM |
266 | if (!appfile |
267 | || symbol_rootP == NULL | |
8d1015a8 AM |
268 | || (bsym = symbol_get_bfdsym (symbol_rootP)) == NULL |
269 | || (bsym->flags & BSF_FILE) == 0) | |
c04f5787 AM |
270 | { |
271 | symbolS *sym; | |
e57e6ddc | 272 | size_t name_length; |
252b5132 | 273 | |
c04f5787 AM |
274 | sym = symbol_new (s, absolute_section, 0, NULL); |
275 | symbol_set_frag (sym, &zero_address_frag); | |
efa19bfd JB |
276 | |
277 | name_length = strlen (s); | |
278 | if (name_length > strlen (S_GET_NAME (sym))) | |
279 | { | |
280 | obstack_grow (¬es, s, name_length + 1); | |
1e9cc1c2 | 281 | S_SET_NAME (sym, (const char *) obstack_finish (¬es)); |
efa19bfd JB |
282 | } |
283 | else | |
284 | strcpy ((char *) S_GET_NAME (sym), s); | |
285 | ||
c04f5787 | 286 | symbol_get_bfdsym (sym)->flags |= BSF_FILE; |
252b5132 | 287 | |
fbdf9406 | 288 | if (symbol_rootP != sym |
8d1015a8 AM |
289 | && ((bsym = symbol_get_bfdsym (symbol_rootP)) == NULL |
290 | || (bsym->flags & BSF_FILE) == 0)) | |
c04f5787 AM |
291 | { |
292 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); | |
293 | symbol_insert (sym, symbol_rootP, &symbol_rootP, &symbol_lastP); | |
fbdf9406 JB |
294 | } |
295 | ||
252b5132 | 296 | #ifdef DEBUG |
fbdf9406 | 297 | verify_symbol_chain (symbol_rootP, symbol_lastP); |
252b5132 RH |
298 | #endif |
299 | } | |
300 | ||
301 | #ifdef NEED_ECOFF_DEBUG | |
f17c130b | 302 | ecoff_new_file (s, appfile); |
252b5132 RH |
303 | #endif |
304 | } | |
305 | ||
e13bab5a AM |
306 | /* Called from read.c:s_comm after we've parsed .comm symbol, size. |
307 | Parse a possible alignment value. */ | |
308 | ||
3b22753a | 309 | symbolS * |
e13bab5a | 310 | elf_common_parse (int ignore ATTRIBUTE_UNUSED, symbolS *symbolP, addressT size) |
252b5132 | 311 | { |
e13bab5a AM |
312 | addressT align = 0; |
313 | int is_local = symbol_get_obj (symbolP)->local; | |
252b5132 | 314 | |
e13bab5a | 315 | if (*input_line_pointer == ',') |
9be1cda6 | 316 | { |
e13bab5a | 317 | char *save = input_line_pointer; |
9be1cda6 | 318 | |
252b5132 RH |
319 | input_line_pointer++; |
320 | SKIP_WHITESPACE (); | |
e13bab5a AM |
321 | |
322 | if (*input_line_pointer == '"') | |
252b5132 | 323 | { |
e13bab5a AM |
324 | /* For sparc. Accept .common symbol, length, "bss" */ |
325 | input_line_pointer++; | |
326 | /* Some use the dot, some don't. */ | |
327 | if (*input_line_pointer == '.') | |
328 | input_line_pointer++; | |
329 | /* Some say data, some say bss. */ | |
330 | if (strncmp (input_line_pointer, "bss\"", 4) == 0) | |
331 | input_line_pointer += 4; | |
332 | else if (strncmp (input_line_pointer, "data\"", 5) == 0) | |
333 | input_line_pointer += 5; | |
334 | else | |
252b5132 | 335 | { |
e13bab5a AM |
336 | char *p = input_line_pointer; |
337 | char c; | |
338 | ||
339 | while (*--p != '"') | |
340 | ; | |
341 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
342 | if (*input_line_pointer++ == '"') | |
343 | break; | |
344 | c = *input_line_pointer; | |
345 | *input_line_pointer = '\0'; | |
346 | as_bad (_("bad .common segment %s"), p); | |
347 | *input_line_pointer = c; | |
348 | ignore_rest_of_line (); | |
349 | return NULL; | |
252b5132 | 350 | } |
e13bab5a AM |
351 | /* ??? Don't ask me why these are always global. */ |
352 | is_local = 0; | |
252b5132 RH |
353 | } |
354 | else | |
355 | { | |
e13bab5a AM |
356 | input_line_pointer = save; |
357 | align = parse_align (is_local); | |
358 | if (align == (addressT) -1) | |
359 | return NULL; | |
252b5132 RH |
360 | } |
361 | } | |
e13bab5a AM |
362 | |
363 | if (is_local) | |
364 | { | |
365 | bss_alloc (symbolP, size, align); | |
366 | S_CLEAR_EXTERNAL (symbolP); | |
367 | } | |
252b5132 RH |
368 | else |
369 | { | |
e13bab5a AM |
370 | S_SET_VALUE (symbolP, size); |
371 | S_SET_ALIGN (symbolP, align); | |
372 | S_SET_EXTERNAL (symbolP); | |
3b22753a | 373 | S_SET_SEGMENT (symbolP, elf_com_section_ptr); |
252b5132 RH |
374 | } |
375 | ||
49309057 | 376 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; |
252b5132 | 377 | |
13ae64f3 | 378 | return symbolP; |
252b5132 RH |
379 | } |
380 | ||
13ae64f3 | 381 | void |
dbe2df79 | 382 | obj_elf_common (int is_common) |
13ae64f3 | 383 | { |
e13bab5a AM |
384 | if (flag_mri && is_common) |
385 | s_mri_common (0); | |
386 | else | |
387 | s_comm_internal (0, elf_common_parse); | |
13ae64f3 JJ |
388 | } |
389 | ||
390 | static void | |
dbe2df79 | 391 | obj_elf_tls_common (int ignore ATTRIBUTE_UNUSED) |
13ae64f3 | 392 | { |
e13bab5a | 393 | symbolS *symbolP = s_comm_internal (0, elf_common_parse); |
13ae64f3 JJ |
394 | |
395 | if (symbolP) | |
396 | symbol_get_bfdsym (symbolP)->flags |= BSF_THREAD_LOCAL; | |
397 | } | |
398 | ||
13c56984 AM |
399 | static void |
400 | obj_elf_lcomm (int ignore ATTRIBUTE_UNUSED) | |
401 | { | |
402 | symbolS *symbolP = s_comm_internal (0, s_lcomm_internal); | |
403 | ||
404 | if (symbolP) | |
405 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; | |
406 | } | |
407 | ||
6e8bd58f NS |
408 | static symbolS * |
409 | get_sym_from_input_line_and_check (void) | |
410 | { | |
411 | char *name; | |
412 | char c; | |
413 | symbolS *sym; | |
414 | ||
d02603dc | 415 | c = get_symbol_name (& name); |
6e8bd58f NS |
416 | sym = symbol_find_or_make (name); |
417 | *input_line_pointer = c; | |
d02603dc | 418 | SKIP_WHITESPACE_AFTER_NAME (); |
6e8bd58f NS |
419 | |
420 | /* There is no symbol name if input_line_pointer has not moved. */ | |
421 | if (name == input_line_pointer) | |
422 | as_bad (_("Missing symbol name in directive")); | |
423 | return sym; | |
424 | } | |
425 | ||
252b5132 | 426 | static void |
dbe2df79 | 427 | obj_elf_local (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 428 | { |
252b5132 RH |
429 | int c; |
430 | symbolS *symbolP; | |
431 | ||
432 | do | |
433 | { | |
01642c12 | 434 | symbolP = get_sym_from_input_line_and_check (); |
6e8bd58f | 435 | c = *input_line_pointer; |
252b5132 | 436 | S_CLEAR_EXTERNAL (symbolP); |
49309057 | 437 | symbol_get_obj (symbolP)->local = 1; |
252b5132 RH |
438 | if (c == ',') |
439 | { | |
440 | input_line_pointer++; | |
441 | SKIP_WHITESPACE (); | |
442 | if (*input_line_pointer == '\n') | |
443 | c = '\n'; | |
444 | } | |
445 | } | |
446 | while (c == ','); | |
447 | demand_empty_rest_of_line (); | |
448 | } | |
449 | ||
450 | static void | |
dbe2df79 | 451 | obj_elf_weak (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 452 | { |
252b5132 RH |
453 | int c; |
454 | symbolS *symbolP; | |
455 | ||
456 | do | |
457 | { | |
01642c12 | 458 | symbolP = get_sym_from_input_line_and_check (); |
6e8bd58f | 459 | c = *input_line_pointer; |
252b5132 | 460 | S_SET_WEAK (symbolP); |
252b5132 RH |
461 | if (c == ',') |
462 | { | |
463 | input_line_pointer++; | |
464 | SKIP_WHITESPACE (); | |
465 | if (*input_line_pointer == '\n') | |
466 | c = '\n'; | |
467 | } | |
468 | } | |
469 | while (c == ','); | |
470 | demand_empty_rest_of_line (); | |
471 | } | |
472 | ||
2e13b764 | 473 | static void |
dbe2df79 | 474 | obj_elf_visibility (int visibility) |
2e13b764 | 475 | { |
2e13b764 NC |
476 | int c; |
477 | symbolS *symbolP; | |
478 | asymbol *bfdsym; | |
479 | elf_symbol_type *elfsym; | |
480 | ||
481 | do | |
482 | { | |
6e8bd58f | 483 | symbolP = get_sym_from_input_line_and_check (); |
fa306131 | 484 | |
2e13b764 NC |
485 | bfdsym = symbol_get_bfdsym (symbolP); |
486 | elfsym = elf_symbol_from (bfd_asymbol_bfd (bfdsym), bfdsym); | |
fa306131 | 487 | |
9c2799c2 | 488 | gas_assert (elfsym); |
fa306131 | 489 | |
20e420c2 RH |
490 | elfsym->internal_elf_sym.st_other &= ~3; |
491 | elfsym->internal_elf_sym.st_other |= visibility; | |
fa306131 | 492 | |
6e8bd58f | 493 | c = *input_line_pointer; |
2e13b764 NC |
494 | if (c == ',') |
495 | { | |
496 | input_line_pointer ++; | |
fa306131 | 497 | |
2e13b764 | 498 | SKIP_WHITESPACE (); |
fa306131 | 499 | |
2e13b764 NC |
500 | if (*input_line_pointer == '\n') |
501 | c = '\n'; | |
502 | } | |
503 | } | |
504 | while (c == ','); | |
fa306131 | 505 | |
2e13b764 NC |
506 | demand_empty_rest_of_line (); |
507 | } | |
508 | ||
252b5132 RH |
509 | static segT previous_section; |
510 | static int previous_subsection; | |
511 | ||
9de8d8f1 RH |
512 | struct section_stack |
513 | { | |
514 | struct section_stack *next; | |
515 | segT seg, prev_seg; | |
516 | int subseg, prev_subseg; | |
517 | }; | |
518 | ||
519 | static struct section_stack *section_stack; | |
520 | ||
fafe6678 | 521 | static bfd_boolean |
86654c12 L |
522 | get_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *inf) |
523 | { | |
a8c4d40b | 524 | struct elf_section_match *match = (struct elf_section_match *) inf; |
a91e1603 | 525 | const char *gname = match->group_name; |
86654c12 | 526 | const char *group_name = elf_group_name (sec); |
b7d07216 L |
527 | const char *linked_to_symbol_name |
528 | = sec->map_head.linked_to_symbol_name; | |
a91e1603 | 529 | unsigned int info = elf_section_data (sec)->this_hdr.sh_info; |
01fb1836 | 530 | |
a91e1603 | 531 | return (info == match->info |
a8c4d40b L |
532 | && ((bfd_section_flags (sec) & SEC_ASSEMBLER_SECTION_ID) |
533 | == (match->flags & SEC_ASSEMBLER_SECTION_ID)) | |
534 | && sec->section_id == match->section_id | |
a91e1603 L |
535 | && (group_name == gname |
536 | || (group_name != NULL | |
537 | && gname != NULL | |
b7d07216 L |
538 | && strcmp (group_name, gname) == 0)) |
539 | && (linked_to_symbol_name == match->linked_to_symbol_name | |
540 | || (linked_to_symbol_name != NULL | |
541 | && match->linked_to_symbol_name != NULL | |
542 | && strcmp (linked_to_symbol_name, | |
543 | match->linked_to_symbol_name) == 0))); | |
86654c12 L |
544 | } |
545 | ||
252b5132 RH |
546 | /* Handle the .section pseudo-op. This code supports two different |
547 | syntaxes. | |
548 | ||
549 | The first is found on Solaris, and looks like | |
550 | .section ".sec1",#alloc,#execinstr,#write | |
551 | Here the names after '#' are the SHF_* flags to turn on for the | |
552 | section. I'm not sure how it determines the SHT_* type (BFD | |
553 | doesn't really give us control over the type, anyhow). | |
554 | ||
555 | The second format is found on UnixWare, and probably most SVR4 | |
556 | machines, and looks like | |
557 | .section .sec1,"a",@progbits | |
558 | The quoted string may contain any combination of a, w, x, and | |
559 | represents the SHF_* flags to turn on for the section. The string | |
560 | beginning with '@' can be progbits or nobits. There should be | |
561 | other possibilities, but I don't know what they are. In any case, | |
562 | BFD doesn't really let us set the section type. */ | |
563 | ||
cca86cc8 | 564 | void |
dbe2df79 | 565 | obj_elf_change_section (const char *name, |
9fb71ee4 | 566 | unsigned int type, |
01e1a5bc | 567 | bfd_vma attr, |
dbe2df79 | 568 | int entsize, |
a8c4d40b | 569 | struct elf_section_match *match_p, |
dbe2df79 AM |
570 | int linkonce, |
571 | int push) | |
252b5132 | 572 | { |
fafe6678 | 573 | asection *old_sec; |
252b5132 | 574 | segT sec; |
742f45cf | 575 | flagword flags; |
551b43fd | 576 | const struct elf_backend_data *bed; |
f61e8019 | 577 | const struct bfd_elf_special_section *ssect; |
a8c4d40b L |
578 | |
579 | if (match_p == NULL) | |
580 | { | |
581 | static struct elf_section_match unused_match; | |
582 | match_p = &unused_match; | |
583 | } | |
252b5132 RH |
584 | |
585 | #ifdef md_flush_pending_output | |
586 | md_flush_pending_output (); | |
587 | #endif | |
588 | ||
9de8d8f1 RH |
589 | /* Switch to the section, creating it if necessary. */ |
590 | if (push) | |
591 | { | |
592 | struct section_stack *elt; | |
325801bd | 593 | elt = XNEW (struct section_stack); |
9de8d8f1 RH |
594 | elt->next = section_stack; |
595 | elt->seg = now_seg; | |
596 | elt->prev_seg = previous_section; | |
597 | elt->subseg = now_subseg; | |
598 | elt->prev_subseg = previous_subsection; | |
599 | section_stack = elt; | |
600 | } | |
601 | previous_section = now_seg; | |
602 | previous_subsection = now_subseg; | |
603 | ||
fafe6678 | 604 | old_sec = bfd_get_section_by_name_if (stdoutput, name, get_section, |
a8c4d40b | 605 | (void *) match_p); |
fafe6678 | 606 | if (old_sec) |
86654c12 | 607 | { |
fafe6678 | 608 | sec = old_sec; |
86654c12 L |
609 | subseg_set (sec, 0); |
610 | } | |
611 | else | |
612 | sec = subseg_force_new (name, 0); | |
613 | ||
551b43fd AM |
614 | bed = get_elf_backend_data (stdoutput); |
615 | ssect = (*bed->get_sec_type_attr) (stdoutput, sec); | |
9de8d8f1 | 616 | |
f61e8019 | 617 | if (ssect != NULL) |
2f89ff8d | 618 | { |
ea8f8eab L |
619 | bfd_boolean override = FALSE; |
620 | ||
2f89ff8d | 621 | if (type == SHT_NULL) |
f61e8019 AM |
622 | type = ssect->type; |
623 | else if (type != ssect->type) | |
2f89ff8d | 624 | { |
fafe6678 | 625 | if (old_sec == NULL |
23ddb850 | 626 | /* Some older versions of gcc will emit |
7ed1d346 | 627 | |
2f89ff8d | 628 | .section .init_array,"aw",@progbits |
7ed1d346 | 629 | |
2f89ff8d | 630 | for __attribute__ ((section (".init_array"))). |
3b22753a | 631 | "@progbits" is incorrect. Also for x86-64 large bss |
23ddb850 | 632 | sections, some older versions of gcc will emit |
3b22753a L |
633 | |
634 | .section .lbss,"aw",@progbits | |
635 | ||
2f89ff8d | 636 | "@progbits" is incorrect. */ |
3b22753a L |
637 | #ifdef TC_I386 |
638 | && (bed->s->arch_size != 64 | |
639 | || !(ssect->attr & SHF_X86_64_LARGE)) | |
640 | #endif | |
f61e8019 AM |
641 | && ssect->type != SHT_INIT_ARRAY |
642 | && ssect->type != SHT_FINI_ARRAY | |
643 | && ssect->type != SHT_PREINIT_ARRAY) | |
2f89ff8d L |
644 | { |
645 | /* We allow to specify any type for a .note section. */ | |
9fb71ee4 NC |
646 | if (ssect->type != SHT_NOTE |
647 | /* Processor and application defined types are allowed too. */ | |
648 | && type < SHT_LOPROC) | |
2f89ff8d L |
649 | as_warn (_("setting incorrect section type for %s"), |
650 | name); | |
651 | } | |
652 | else | |
653 | { | |
654 | as_warn (_("ignoring incorrect section type for %s"), | |
742f45cf | 655 | name); |
f61e8019 | 656 | type = ssect->type; |
2f89ff8d L |
657 | } |
658 | } | |
659 | ||
9fb71ee4 NC |
660 | if (old_sec == NULL && ((attr & ~(SHF_MASKOS | SHF_MASKPROC)) |
661 | & ~ssect->attr) != 0) | |
2f89ff8d L |
662 | { |
663 | /* As a GNU extension, we permit a .note section to be | |
f61e8019 | 664 | allocatable. If the linker sees an allocatable .note |
2f89ff8d | 665 | section, it will create a PT_NOTE segment in the output |
92191b29 | 666 | file. We also allow "x" for .note.GNU-stack. */ |
f61e8019 AM |
667 | if (ssect->type == SHT_NOTE |
668 | && (attr == SHF_ALLOC || attr == SHF_EXECINSTR)) | |
669 | ; | |
670 | /* Allow different SHF_MERGE and SHF_STRINGS if we have | |
671 | something like .rodata.str. */ | |
672 | else if (ssect->suffix_length == -2 | |
673 | && name[ssect->prefix_length] == '.' | |
ea8f8eab L |
674 | && (attr |
675 | & ~ssect->attr | |
676 | & ~SHF_MERGE | |
677 | & ~SHF_STRINGS) == 0) | |
f61e8019 | 678 | ; |
ea8f8eab L |
679 | /* .interp, .strtab and .symtab can have SHF_ALLOC. */ |
680 | else if (attr == SHF_ALLOC | |
681 | && (strcmp (name, ".interp") == 0 | |
682 | || strcmp (name, ".strtab") == 0 | |
683 | || strcmp (name, ".symtab") == 0)) | |
684 | override = TRUE; | |
b9f18452 L |
685 | /* .note.GNU-stack can have SHF_EXECINSTR. */ |
686 | else if (attr == SHF_EXECINSTR | |
687 | && strcmp (name, ".note.GNU-stack") == 0) | |
688 | override = TRUE; | |
7f841127 L |
689 | #ifdef TC_ALPHA |
690 | /* A section on Alpha may have SHF_ALPHA_GPREL. */ | |
691 | else if ((attr & ~ssect->attr) == SHF_ALPHA_GPREL) | |
692 | override = TRUE; | |
708e2187 NC |
693 | #endif |
694 | #ifdef TC_RX | |
695 | else if (attr == (SHF_EXECINSTR | SHF_WRITE | SHF_ALLOC) | |
696 | && (ssect->type == SHT_INIT_ARRAY | |
697 | || ssect->type == SHT_FINI_ARRAY | |
698 | || ssect->type == SHT_PREINIT_ARRAY)) | |
699 | /* RX init/fini arrays can and should have the "awx" attributes set. */ | |
700 | ; | |
7f841127 | 701 | #endif |
f61e8019 | 702 | else |
ea8f8eab | 703 | { |
a8c4d40b | 704 | if (match_p->group_name == NULL) |
86654c12 L |
705 | as_warn (_("setting incorrect section attributes for %s"), |
706 | name); | |
ea8f8eab L |
707 | override = TRUE; |
708 | } | |
2f89ff8d | 709 | } |
9fb71ee4 | 710 | |
fafe6678 | 711 | if (!override && old_sec == NULL) |
f61e8019 | 712 | attr |= ssect->attr; |
2f89ff8d | 713 | } |
742f45cf AM |
714 | |
715 | /* Convert ELF type and flags to BFD flags. */ | |
716 | flags = (SEC_RELOC | |
717 | | ((attr & SHF_WRITE) ? 0 : SEC_READONLY) | |
718 | | ((attr & SHF_ALLOC) ? SEC_ALLOC : 0) | |
719 | | (((attr & SHF_ALLOC) && type != SHT_NOBITS) ? SEC_LOAD : 0) | |
f5fa8ca2 JJ |
720 | | ((attr & SHF_EXECINSTR) ? SEC_CODE : 0) |
721 | | ((attr & SHF_MERGE) ? SEC_MERGE : 0) | |
13ae64f3 | 722 | | ((attr & SHF_STRINGS) ? SEC_STRINGS : 0) |
18ae9cc1 | 723 | | ((attr & SHF_EXCLUDE) ? SEC_EXCLUDE: 0) |
13ae64f3 | 724 | | ((attr & SHF_TLS) ? SEC_THREAD_LOCAL : 0)); |
9de8d8f1 | 725 | #ifdef md_elf_section_flags |
742f45cf | 726 | flags = md_elf_section_flags (flags, attr, type); |
9de8d8f1 RH |
727 | #endif |
728 | ||
86654c12 L |
729 | if (linkonce) |
730 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
731 | ||
fafe6678 | 732 | if (old_sec == NULL) |
742f45cf AM |
733 | { |
734 | symbolS *secsym; | |
735 | ||
94be91de JB |
736 | if (type == SHT_NULL) |
737 | type = bfd_elf_get_default_section_type (flags); | |
7a6d0b32 JB |
738 | elf_section_type (sec) = type; |
739 | elf_section_flags (sec) = attr; | |
a8c4d40b | 740 | elf_section_data (sec)->this_hdr.sh_info = match_p->info; |
7a6d0b32 | 741 | |
9de8d8f1 RH |
742 | /* Prevent SEC_HAS_CONTENTS from being inadvertently set. */ |
743 | if (type == SHT_NOBITS) | |
13c56984 | 744 | seg_info (sec)->bss = 1; |
9de8d8f1 | 745 | |
a8c4d40b L |
746 | /* Set the section ID and flags. */ |
747 | sec->section_id = match_p->section_id; | |
748 | flags |= match_p->flags; | |
749 | ||
b7d07216 L |
750 | /* Set the linked-to symbol name. */ |
751 | sec->map_head.linked_to_symbol_name | |
752 | = match_p->linked_to_symbol_name; | |
753 | ||
fd361982 | 754 | bfd_set_section_flags (sec, flags); |
f5fa8ca2 JJ |
755 | if (flags & SEC_MERGE) |
756 | sec->entsize = entsize; | |
a8c4d40b | 757 | elf_group_name (sec) = match_p->group_name; |
9de8d8f1 RH |
758 | |
759 | /* Add a symbol for this section to the symbol table. */ | |
760 | secsym = symbol_find (name); | |
761 | if (secsym != NULL) | |
762 | symbol_set_bfdsym (secsym, sec->symbol); | |
763 | else | |
13c56984 | 764 | symbol_table_insert (section_symbol (sec)); |
9de8d8f1 | 765 | } |
7a6d0b32 | 766 | else |
742f45cf | 767 | { |
7a6d0b32 JB |
768 | if (type != SHT_NULL |
769 | && (unsigned) type != elf_section_type (old_sec)) | |
33176d91 AM |
770 | { |
771 | if (ssect != NULL) | |
772 | /* This is a special section with known type. User | |
773 | assembly might get the section type wrong; Even high | |
774 | profile projects like glibc have done so in the past. | |
775 | So don't error in this case. */ | |
776 | as_warn (_("ignoring changed section type for %s"), name); | |
777 | else | |
778 | /* Do error when assembly isn't self-consistent. */ | |
779 | as_bad (_("changed section type for %s"), name); | |
780 | } | |
7a6d0b32 JB |
781 | |
782 | if (attr != 0) | |
783 | { | |
784 | /* If section attributes are specified the second time we see a | |
785 | particular section, then check that they are the same as we | |
786 | saw the first time. */ | |
787 | if (((old_sec->flags ^ flags) | |
788 | & (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE | |
789 | | SEC_EXCLUDE | SEC_SORT_ENTRIES | SEC_MERGE | SEC_STRINGS | |
790 | | SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD | |
791 | | SEC_THREAD_LOCAL))) | |
33176d91 AM |
792 | { |
793 | if (ssect != NULL) | |
794 | as_warn (_("ignoring changed section attributes for %s"), name); | |
795 | else | |
796 | as_bad (_("changed section attributes for %s"), name); | |
797 | } | |
9fb71ee4 NC |
798 | else |
799 | /* FIXME: Maybe we should consider removing a previously set | |
800 | processor or application specific attribute as suspicious ? */ | |
801 | elf_section_flags (sec) = attr; | |
802 | ||
7a6d0b32 | 803 | if ((flags & SEC_MERGE) && old_sec->entsize != (unsigned) entsize) |
33176d91 | 804 | as_bad (_("changed section entity size for %s"), name); |
7a6d0b32 | 805 | } |
742f45cf | 806 | } |
9de8d8f1 RH |
807 | |
808 | #ifdef md_elf_section_change_hook | |
742f45cf | 809 | md_elf_section_change_hook (); |
9de8d8f1 RH |
810 | #endif |
811 | } | |
812 | ||
01e1a5bc | 813 | static bfd_vma |
df3a023b AM |
814 | obj_elf_parse_section_letters (char *str, size_t len, |
815 | bfd_boolean *is_clone, bfd_vma *gnu_attr) | |
9de8d8f1 | 816 | { |
01e1a5bc | 817 | bfd_vma attr = 0; |
f6616a06 | 818 | *is_clone = FALSE; |
9de8d8f1 RH |
819 | |
820 | while (len > 0) | |
821 | { | |
822 | switch (*str) | |
823 | { | |
824 | case 'a': | |
825 | attr |= SHF_ALLOC; | |
826 | break; | |
18ae9cc1 L |
827 | case 'e': |
828 | attr |= SHF_EXCLUDE; | |
829 | break; | |
b7d07216 L |
830 | case 'o': |
831 | attr |= SHF_LINK_ORDER; | |
832 | break; | |
9de8d8f1 RH |
833 | case 'w': |
834 | attr |= SHF_WRITE; | |
835 | break; | |
836 | case 'x': | |
837 | attr |= SHF_EXECINSTR; | |
838 | break; | |
9469ddf0 | 839 | case 'M': |
f5fa8ca2 JJ |
840 | attr |= SHF_MERGE; |
841 | break; | |
9469ddf0 | 842 | case 'S': |
f5fa8ca2 JJ |
843 | attr |= SHF_STRINGS; |
844 | break; | |
060adf0e AM |
845 | case 'G': |
846 | attr |= SHF_GROUP; | |
847 | break; | |
13ae64f3 JJ |
848 | case 'T': |
849 | attr |= SHF_TLS; | |
850 | break; | |
a91e1603 | 851 | case 'd': |
df3a023b | 852 | *gnu_attr |= SHF_GNU_MBIND; |
a91e1603 | 853 | break; |
01642c12 | 854 | case '?': |
f6616a06 | 855 | *is_clone = TRUE; |
01642c12 | 856 | break; |
34105363 L |
857 | /* Compatibility. */ |
858 | case 'm': | |
859 | if (*(str - 1) == 'a') | |
860 | { | |
861 | attr |= SHF_MERGE; | |
862 | if (len > 1 && str[1] == 's') | |
863 | { | |
864 | attr |= SHF_STRINGS; | |
865 | str++, len--; | |
866 | } | |
867 | break; | |
868 | } | |
1a0670f3 | 869 | /* Fall through. */ |
9de8d8f1 RH |
870 | default: |
871 | { | |
6d4af3c2 | 872 | const char *bad_msg = _("unrecognized .section attribute:" |
b7d07216 | 873 | " want a,e,o,w,x,M,S,G,T or number"); |
9de8d8f1 | 874 | #ifdef md_elf_section_letter |
01e1a5bc | 875 | bfd_vma md_attr = md_elf_section_letter (*str, &bad_msg); |
8f3bae45 | 876 | if (md_attr != (bfd_vma) -1) |
9de8d8f1 RH |
877 | attr |= md_attr; |
878 | else | |
879 | #endif | |
9fb71ee4 NC |
880 | if (ISDIGIT (*str)) |
881 | { | |
882 | char * end; | |
883 | ||
884 | attr |= strtoul (str, & end, 0); | |
885 | /* Update str and len, allowing for the fact that | |
886 | we will execute str++ and len-- below. */ | |
887 | end --; | |
888 | len -= (end - str); | |
889 | str = end; | |
890 | } | |
891 | else | |
892 | as_fatal ("%s", bad_msg); | |
9de8d8f1 RH |
893 | } |
894 | break; | |
895 | } | |
896 | str++, len--; | |
897 | } | |
898 | ||
899 | return attr; | |
900 | } | |
901 | ||
8d28c9d7 | 902 | static int |
44bf2362 | 903 | obj_elf_section_type (char *str, size_t len, bfd_boolean warn) |
9de8d8f1 RH |
904 | { |
905 | if (len == 8 && strncmp (str, "progbits", 8) == 0) | |
906 | return SHT_PROGBITS; | |
907 | if (len == 6 && strncmp (str, "nobits", 6) == 0) | |
908 | return SHT_NOBITS; | |
34f70875 L |
909 | if (len == 4 && strncmp (str, "note", 4) == 0) |
910 | return SHT_NOTE; | |
10b016c2 PB |
911 | if (len == 10 && strncmp (str, "init_array", 10) == 0) |
912 | return SHT_INIT_ARRAY; | |
913 | if (len == 10 && strncmp (str, "fini_array", 10) == 0) | |
914 | return SHT_FINI_ARRAY; | |
915 | if (len == 13 && strncmp (str, "preinit_array", 13) == 0) | |
916 | return SHT_PREINIT_ARRAY; | |
9de8d8f1 RH |
917 | |
918 | #ifdef md_elf_section_type | |
919 | { | |
920 | int md_type = md_elf_section_type (str, len); | |
921 | if (md_type >= 0) | |
922 | return md_type; | |
923 | } | |
924 | #endif | |
925 | ||
9fb71ee4 NC |
926 | if (ISDIGIT (*str)) |
927 | { | |
928 | char * end; | |
929 | int type = strtoul (str, & end, 0); | |
930 | ||
931 | if (warn && (size_t) (end - str) != len) | |
932 | as_warn (_("extraneous characters at end of numeric section type")); | |
933 | ||
934 | return type; | |
935 | } | |
936 | ||
44bf2362 NC |
937 | if (warn) |
938 | as_warn (_("unrecognized section type")); | |
939 | return 0; | |
940 | } | |
941 | ||
01e1a5bc | 942 | static bfd_vma |
44bf2362 NC |
943 | obj_elf_section_word (char *str, size_t len, int *type) |
944 | { | |
945 | int ret; | |
946 | ||
947 | if (len == 5 && strncmp (str, "write", 5) == 0) | |
948 | return SHF_WRITE; | |
949 | if (len == 5 && strncmp (str, "alloc", 5) == 0) | |
950 | return SHF_ALLOC; | |
951 | if (len == 9 && strncmp (str, "execinstr", 9) == 0) | |
952 | return SHF_EXECINSTR; | |
18ae9cc1 L |
953 | if (len == 7 && strncmp (str, "exclude", 7) == 0) |
954 | return SHF_EXCLUDE; | |
44bf2362 NC |
955 | if (len == 3 && strncmp (str, "tls", 3) == 0) |
956 | return SHF_TLS; | |
957 | ||
958 | #ifdef md_elf_section_word | |
959 | { | |
01e1a5bc NC |
960 | bfd_vma md_attr = md_elf_section_word (str, len); |
961 | if (md_attr > 0) | |
44bf2362 NC |
962 | return md_attr; |
963 | } | |
964 | #endif | |
965 | ||
966 | ret = obj_elf_section_type (str, len, FALSE); | |
967 | if (ret != 0) | |
968 | *type = ret; | |
969 | else | |
970 | as_warn (_("unrecognized section attribute")); | |
971 | ||
9de8d8f1 RH |
972 | return 0; |
973 | } | |
974 | ||
6ce8b369 | 975 | /* Get name of section. */ |
82b8a785 | 976 | const char * |
dbe2df79 | 977 | obj_elf_section_name (void) |
6ce8b369 AM |
978 | { |
979 | char *name; | |
980 | ||
981 | SKIP_WHITESPACE (); | |
982 | if (*input_line_pointer == '"') | |
983 | { | |
984 | int dummy; | |
985 | ||
986 | name = demand_copy_C_string (&dummy); | |
987 | if (name == NULL) | |
988 | { | |
989 | ignore_rest_of_line (); | |
990 | return NULL; | |
991 | } | |
992 | } | |
993 | else | |
994 | { | |
995 | char *end = input_line_pointer; | |
996 | ||
997 | while (0 == strchr ("\n\t,; ", *end)) | |
998 | end++; | |
999 | if (end == input_line_pointer) | |
1000 | { | |
c95b35a9 | 1001 | as_bad (_("missing name")); |
6ce8b369 AM |
1002 | ignore_rest_of_line (); |
1003 | return NULL; | |
1004 | } | |
1005 | ||
29a2809e | 1006 | name = xmemdup0 (input_line_pointer, end - input_line_pointer); |
451133ce NP |
1007 | |
1008 | while (flag_sectname_subst) | |
1009 | { | |
1010 | char *subst = strchr (name, '%'); | |
1011 | if (subst && subst[1] == 'S') | |
1012 | { | |
1013 | int oldlen = strlen (name); | |
1014 | int substlen = strlen (now_seg->name); | |
1015 | int newlen = oldlen - 2 + substlen; | |
add39d23 | 1016 | char *newname = XNEWVEC (char, newlen + 1); |
451133ce NP |
1017 | int headlen = subst - name; |
1018 | memcpy (newname, name, headlen); | |
1019 | strcpy (newname + headlen, now_seg->name); | |
1020 | strcat (newname + headlen, subst + 2); | |
1021 | xfree (name); | |
1022 | name = newname; | |
1023 | } | |
1024 | else | |
1025 | break; | |
1026 | } | |
1027 | ||
612d7b83 L |
1028 | #ifdef tc_canonicalize_section_name |
1029 | name = tc_canonicalize_section_name (name); | |
1030 | #endif | |
6ce8b369 AM |
1031 | input_line_pointer = end; |
1032 | } | |
1033 | SKIP_WHITESPACE (); | |
1034 | return name; | |
1035 | } | |
1036 | ||
9de8d8f1 | 1037 | void |
dbe2df79 | 1038 | obj_elf_section (int push) |
9de8d8f1 | 1039 | { |
a8c4d40b | 1040 | const char *name; |
82b8a785 | 1041 | char *beg; |
01e1a5bc NC |
1042 | int type, dummy; |
1043 | bfd_vma attr; | |
df3a023b | 1044 | bfd_vma gnu_attr; |
f5fa8ca2 | 1045 | int entsize; |
d2dab548 | 1046 | int linkonce; |
6f932bce | 1047 | subsegT new_subsection = -1; |
a8c4d40b | 1048 | struct elf_section_match match; |
9de8d8f1 | 1049 | |
252b5132 RH |
1050 | if (flag_mri) |
1051 | { | |
1052 | char mri_type; | |
1053 | ||
9de8d8f1 | 1054 | #ifdef md_flush_pending_output |
60bcf0fa | 1055 | md_flush_pending_output (); |
9de8d8f1 RH |
1056 | #endif |
1057 | ||
252b5132 RH |
1058 | previous_section = now_seg; |
1059 | previous_subsection = now_subseg; | |
1060 | ||
1061 | s_mri_sect (&mri_type); | |
1062 | ||
1063 | #ifdef md_elf_section_change_hook | |
1064 | md_elf_section_change_hook (); | |
1065 | #endif | |
1066 | ||
1067 | return; | |
1068 | } | |
1069 | ||
6ce8b369 AM |
1070 | name = obj_elf_section_name (); |
1071 | if (name == NULL) | |
1072 | return; | |
f1f28025 | 1073 | |
a8c4d40b L |
1074 | memset (&match, 0, sizeof (match)); |
1075 | ||
f1f28025 NC |
1076 | symbolS * sym; |
1077 | if ((sym = symbol_find (name)) != NULL | |
1078 | && ! symbol_section_p (sym) | |
1079 | && S_IS_DEFINED (sym) | |
1080 | && ! S_IS_VOLATILE (sym) | |
1081 | && ! S_CAN_BE_REDEFINED (sym)) | |
1082 | { | |
1083 | as_bad (_("section name '%s' already defined as another symbol"), name); | |
1084 | ignore_rest_of_line (); | |
1085 | return; | |
1086 | } | |
252b5132 RH |
1087 | type = SHT_NULL; |
1088 | attr = 0; | |
df3a023b | 1089 | gnu_attr = 0; |
f5fa8ca2 | 1090 | entsize = 0; |
d2dab548 | 1091 | linkonce = 0; |
252b5132 RH |
1092 | |
1093 | if (*input_line_pointer == ',') | |
1094 | { | |
1095 | /* Skip the comma. */ | |
1096 | ++input_line_pointer; | |
252b5132 RH |
1097 | SKIP_WHITESPACE (); |
1098 | ||
9cfc3331 | 1099 | if (push && ISDIGIT (*input_line_pointer)) |
6f932bce | 1100 | { |
9cfc3331 | 1101 | /* .pushsection has an optional subsection. */ |
6f932bce | 1102 | new_subsection = (subsegT) get_absolute_expression (); |
9cfc3331 L |
1103 | |
1104 | SKIP_WHITESPACE (); | |
1105 | ||
1106 | /* Stop if we don't see a comma. */ | |
1107 | if (*input_line_pointer != ',') | |
1108 | goto done; | |
1109 | ||
1110 | /* Skip the comma. */ | |
1111 | ++input_line_pointer; | |
1112 | SKIP_WHITESPACE (); | |
6f932bce | 1113 | } |
9cfc3331 L |
1114 | |
1115 | if (*input_line_pointer == '"') | |
252b5132 | 1116 | { |
f6616a06 | 1117 | bfd_boolean is_clone; |
01642c12 | 1118 | |
9de8d8f1 RH |
1119 | beg = demand_copy_C_string (&dummy); |
1120 | if (beg == NULL) | |
252b5132 | 1121 | { |
9de8d8f1 RH |
1122 | ignore_rest_of_line (); |
1123 | return; | |
252b5132 | 1124 | } |
df3a023b AM |
1125 | attr |= obj_elf_parse_section_letters (beg, strlen (beg), |
1126 | &is_clone, &gnu_attr); | |
252b5132 RH |
1127 | |
1128 | SKIP_WHITESPACE (); | |
1129 | if (*input_line_pointer == ',') | |
1130 | { | |
9de8d8f1 | 1131 | char c; |
060adf0e AM |
1132 | char *save = input_line_pointer; |
1133 | ||
252b5132 RH |
1134 | ++input_line_pointer; |
1135 | SKIP_WHITESPACE (); | |
9de8d8f1 RH |
1136 | c = *input_line_pointer; |
1137 | if (c == '"') | |
252b5132 | 1138 | { |
9de8d8f1 RH |
1139 | beg = demand_copy_C_string (&dummy); |
1140 | if (beg == NULL) | |
252b5132 | 1141 | { |
9de8d8f1 RH |
1142 | ignore_rest_of_line (); |
1143 | return; | |
252b5132 | 1144 | } |
44bf2362 | 1145 | type = obj_elf_section_type (beg, strlen (beg), TRUE); |
9de8d8f1 RH |
1146 | } |
1147 | else if (c == '@' || c == '%') | |
1148 | { | |
d02603dc | 1149 | ++input_line_pointer; |
9fb71ee4 NC |
1150 | |
1151 | if (ISDIGIT (* input_line_pointer)) | |
df3a023b | 1152 | type = strtoul (input_line_pointer, &input_line_pointer, 0); |
9fb71ee4 NC |
1153 | else |
1154 | { | |
1155 | c = get_symbol_name (& beg); | |
1156 | (void) restore_line_pointer (c); | |
df3a023b AM |
1157 | type = obj_elf_section_type (beg, |
1158 | input_line_pointer - beg, | |
1159 | TRUE); | |
9fb71ee4 | 1160 | } |
252b5132 | 1161 | } |
060adf0e AM |
1162 | else |
1163 | input_line_pointer = save; | |
252b5132 | 1164 | } |
f5fa8ca2 JJ |
1165 | |
1166 | SKIP_WHITESPACE (); | |
6ce8b369 | 1167 | if ((attr & SHF_MERGE) != 0 && *input_line_pointer == ',') |
f5fa8ca2 JJ |
1168 | { |
1169 | ++input_line_pointer; | |
1170 | SKIP_WHITESPACE (); | |
1171 | entsize = get_absolute_expression (); | |
6ce8b369 | 1172 | SKIP_WHITESPACE (); |
f5fa8ca2 JJ |
1173 | if (entsize < 0) |
1174 | { | |
6ce8b369 | 1175 | as_warn (_("invalid merge entity size")); |
f5fa8ca2 JJ |
1176 | attr &= ~SHF_MERGE; |
1177 | entsize = 0; | |
1178 | } | |
1179 | } | |
6ce8b369 AM |
1180 | else if ((attr & SHF_MERGE) != 0) |
1181 | { | |
1182 | as_warn (_("entity size for SHF_MERGE not specified")); | |
1183 | attr &= ~SHF_MERGE; | |
1184 | } | |
060adf0e | 1185 | |
b7d07216 L |
1186 | if ((attr & SHF_LINK_ORDER) != 0 && *input_line_pointer == ',') |
1187 | { | |
1188 | char c; | |
1189 | unsigned int length; | |
1190 | ++input_line_pointer; | |
1191 | SKIP_WHITESPACE (); | |
1192 | c = get_symbol_name (& beg); | |
1193 | (void) restore_line_pointer (c); | |
1194 | length = input_line_pointer - beg; | |
1195 | if (length) | |
1196 | match.linked_to_symbol_name = xmemdup0 (beg, length); | |
1197 | } | |
1198 | ||
f6616a06 | 1199 | if ((attr & SHF_GROUP) != 0 && is_clone) |
01642c12 RM |
1200 | { |
1201 | as_warn (_("? section flag ignored with G present")); | |
f6616a06 | 1202 | is_clone = FALSE; |
01642c12 | 1203 | } |
060adf0e AM |
1204 | if ((attr & SHF_GROUP) != 0 && *input_line_pointer == ',') |
1205 | { | |
1206 | ++input_line_pointer; | |
a8c4d40b L |
1207 | match.group_name = obj_elf_section_name (); |
1208 | if (match.group_name == NULL) | |
060adf0e | 1209 | attr &= ~SHF_GROUP; |
59365e19 | 1210 | else if (*input_line_pointer == ',') |
d2dab548 | 1211 | { |
59365e19 AM |
1212 | ++input_line_pointer; |
1213 | SKIP_WHITESPACE (); | |
1214 | if (strncmp (input_line_pointer, "comdat", 6) == 0) | |
1215 | { | |
1216 | input_line_pointer += 6; | |
1217 | linkonce = 1; | |
1218 | } | |
d2dab548 AM |
1219 | } |
1220 | else if (strncmp (name, ".gnu.linkonce", 13) == 0) | |
1221 | linkonce = 1; | |
060adf0e AM |
1222 | } |
1223 | else if ((attr & SHF_GROUP) != 0) | |
1224 | { | |
1225 | as_warn (_("group name for SHF_GROUP not specified")); | |
1226 | attr &= ~SHF_GROUP; | |
1227 | } | |
01642c12 | 1228 | |
f6616a06 | 1229 | if (is_clone) |
01642c12 RM |
1230 | { |
1231 | const char *now_group = elf_group_name (now_seg); | |
1232 | if (now_group != NULL) | |
1233 | { | |
a8c4d40b | 1234 | match.group_name = xstrdup (now_group); |
01642c12 RM |
1235 | linkonce = (now_seg->flags & SEC_LINK_ONCE) != 0; |
1236 | } | |
1237 | } | |
a91e1603 | 1238 | |
df3a023b | 1239 | if ((gnu_attr & SHF_GNU_MBIND) != 0 && *input_line_pointer == ',') |
a91e1603 | 1240 | { |
a8c4d40b | 1241 | char *save = input_line_pointer; |
a91e1603 L |
1242 | ++input_line_pointer; |
1243 | SKIP_WHITESPACE (); | |
1244 | if (ISDIGIT (* input_line_pointer)) | |
1245 | { | |
1246 | char *t = input_line_pointer; | |
a8c4d40b L |
1247 | match.info = strtoul (input_line_pointer, |
1248 | &input_line_pointer, 0); | |
1249 | if (match.info == (unsigned int) -1) | |
a91e1603 L |
1250 | { |
1251 | as_warn (_("unsupported mbind section info: %s"), t); | |
a8c4d40b | 1252 | match.info = 0; |
a91e1603 L |
1253 | } |
1254 | } | |
a8c4d40b L |
1255 | else |
1256 | input_line_pointer = save; | |
1257 | } | |
1258 | ||
1259 | if (*input_line_pointer == ',') | |
1260 | { | |
1261 | char *save = input_line_pointer; | |
1262 | ++input_line_pointer; | |
1263 | SKIP_WHITESPACE (); | |
1264 | if (strncmp (input_line_pointer, "unique", 6) == 0) | |
1265 | { | |
1266 | input_line_pointer += 6; | |
1267 | SKIP_WHITESPACE (); | |
1268 | if (*input_line_pointer == ',') | |
1269 | { | |
1270 | ++input_line_pointer; | |
1271 | SKIP_WHITESPACE (); | |
1272 | if (ISDIGIT (* input_line_pointer)) | |
1273 | { | |
1274 | bfd_vma id; | |
1275 | bfd_boolean overflow; | |
1276 | char *t = input_line_pointer; | |
1277 | if (sizeof (bfd_vma) <= sizeof (unsigned long)) | |
1278 | { | |
1279 | errno = 0; | |
1280 | id = strtoul (input_line_pointer, | |
1281 | &input_line_pointer, 0); | |
1282 | overflow = (id == (unsigned long) -1 | |
1283 | && errno == ERANGE); | |
1284 | } | |
1285 | else | |
1286 | { | |
1287 | id = bfd_scan_vma | |
1288 | (input_line_pointer, | |
1289 | (const char **) &input_line_pointer, 0); | |
1290 | overflow = id == ~(bfd_vma) 0; | |
1291 | } | |
1292 | if (overflow || id > (unsigned int) -1) | |
1293 | { | |
1294 | char *linefeed, saved_char = 0; | |
1295 | if ((linefeed = strchr (t, '\n')) != NULL) | |
1296 | { | |
1297 | saved_char = *linefeed; | |
1298 | *linefeed = '\0'; | |
1299 | } | |
1300 | as_bad (_("unsupported section id: %s"), t); | |
1301 | if (saved_char) | |
1302 | *linefeed = saved_char; | |
1303 | } | |
1304 | else | |
1305 | { | |
1306 | match.section_id = id; | |
1307 | match.flags |= SEC_ASSEMBLER_SECTION_ID; | |
1308 | } | |
1309 | } | |
1310 | } | |
1311 | } | |
1312 | else | |
1313 | input_line_pointer = save; | |
a91e1603 | 1314 | } |
252b5132 RH |
1315 | } |
1316 | else | |
1317 | { | |
1318 | do | |
1319 | { | |
9de8d8f1 RH |
1320 | char c; |
1321 | ||
252b5132 RH |
1322 | SKIP_WHITESPACE (); |
1323 | if (*input_line_pointer != '#') | |
1324 | { | |
c95b35a9 | 1325 | as_bad (_("character following name is not '#'")); |
252b5132 RH |
1326 | ignore_rest_of_line (); |
1327 | return; | |
1328 | } | |
d02603dc NC |
1329 | ++input_line_pointer; |
1330 | c = get_symbol_name (& beg); | |
1331 | (void) restore_line_pointer (c); | |
9de8d8f1 | 1332 | |
df3a023b AM |
1333 | attr |= obj_elf_section_word (beg, input_line_pointer - beg, |
1334 | &type); | |
9de8d8f1 | 1335 | |
252b5132 RH |
1336 | SKIP_WHITESPACE (); |
1337 | } | |
1338 | while (*input_line_pointer++ == ','); | |
1339 | --input_line_pointer; | |
1340 | } | |
1341 | } | |
1342 | ||
dc1e8a47 | 1343 | done: |
252b5132 | 1344 | demand_empty_rest_of_line (); |
9de8d8f1 | 1345 | |
a8c4d40b L |
1346 | obj_elf_change_section (name, type, attr, entsize, &match, linkonce, |
1347 | push); | |
6f932bce | 1348 | |
df3a023b AM |
1349 | if ((gnu_attr & SHF_GNU_MBIND) != 0) |
1350 | { | |
1351 | struct elf_backend_data *bed; | |
1352 | ||
1353 | if ((attr & SHF_ALLOC) == 0) | |
1354 | as_bad (_("SHF_ALLOC isn't set for GNU_MBIND section: %s"), name); | |
1355 | ||
1356 | bed = (struct elf_backend_data *) get_elf_backend_data (stdoutput); | |
1357 | if (bed->elf_osabi == ELFOSABI_NONE) | |
1358 | bed->elf_osabi = ELFOSABI_GNU; | |
1359 | else if (bed->elf_osabi != ELFOSABI_GNU | |
1360 | && bed->elf_osabi != ELFOSABI_FREEBSD) | |
1361 | as_bad (_("GNU_MBIND section is supported only by GNU " | |
1362 | "and FreeBSD targets")); | |
cc364be6 | 1363 | elf_tdata (stdoutput)->has_gnu_osabi |= elf_gnu_osabi_mbind; |
df3a023b AM |
1364 | } |
1365 | elf_section_flags (now_seg) |= gnu_attr; | |
1366 | ||
6f932bce NC |
1367 | if (push && new_subsection != -1) |
1368 | subseg_set (now_seg, new_subsection); | |
252b5132 RH |
1369 | } |
1370 | ||
1371 | /* Change to the .data section. */ | |
1372 | ||
16b93d88 | 1373 | void |
dbe2df79 | 1374 | obj_elf_data (int i) |
252b5132 RH |
1375 | { |
1376 | #ifdef md_flush_pending_output | |
1377 | md_flush_pending_output (); | |
1378 | #endif | |
1379 | ||
1380 | previous_section = now_seg; | |
1381 | previous_subsection = now_subseg; | |
1382 | s_data (i); | |
1383 | ||
1384 | #ifdef md_elf_section_change_hook | |
1385 | md_elf_section_change_hook (); | |
1386 | #endif | |
1387 | } | |
1388 | ||
1389 | /* Change to the .text section. */ | |
1390 | ||
16b93d88 | 1391 | void |
dbe2df79 | 1392 | obj_elf_text (int i) |
252b5132 RH |
1393 | { |
1394 | #ifdef md_flush_pending_output | |
1395 | md_flush_pending_output (); | |
1396 | #endif | |
1397 | ||
1398 | previous_section = now_seg; | |
1399 | previous_subsection = now_subseg; | |
1400 | s_text (i); | |
1401 | ||
1402 | #ifdef md_elf_section_change_hook | |
1403 | md_elf_section_change_hook (); | |
1404 | #endif | |
1405 | } | |
1406 | ||
8fe53b44 JB |
1407 | /* Change to the *ABS* section. */ |
1408 | ||
1409 | void | |
1410 | obj_elf_struct (int i) | |
1411 | { | |
1412 | #ifdef md_flush_pending_output | |
1413 | md_flush_pending_output (); | |
1414 | #endif | |
1415 | ||
1416 | previous_section = now_seg; | |
1417 | previous_subsection = now_subseg; | |
1418 | s_struct (i); | |
1419 | ||
1420 | #ifdef md_elf_section_change_hook | |
1421 | md_elf_section_change_hook (); | |
1422 | #endif | |
1423 | } | |
1424 | ||
252b5132 | 1425 | static void |
dbe2df79 | 1426 | obj_elf_subsection (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1427 | { |
6f932bce | 1428 | int temp; |
252b5132 RH |
1429 | |
1430 | #ifdef md_flush_pending_output | |
1431 | md_flush_pending_output (); | |
1432 | #endif | |
1433 | ||
1434 | previous_section = now_seg; | |
1435 | previous_subsection = now_subseg; | |
1436 | ||
1437 | temp = get_absolute_expression (); | |
1438 | subseg_set (now_seg, (subsegT) temp); | |
1439 | demand_empty_rest_of_line (); | |
1440 | ||
1441 | #ifdef md_elf_section_change_hook | |
1442 | md_elf_section_change_hook (); | |
1443 | #endif | |
1444 | } | |
1445 | ||
1446 | /* This can be called from the processor backends if they change | |
1447 | sections. */ | |
1448 | ||
1449 | void | |
dbe2df79 | 1450 | obj_elf_section_change_hook (void) |
252b5132 RH |
1451 | { |
1452 | previous_section = now_seg; | |
1453 | previous_subsection = now_subseg; | |
1454 | } | |
1455 | ||
1456 | void | |
dbe2df79 | 1457 | obj_elf_previous (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1458 | { |
9de8d8f1 RH |
1459 | segT new_section; |
1460 | int new_subsection; | |
1461 | ||
252b5132 RH |
1462 | if (previous_section == 0) |
1463 | { | |
6ce8b369 | 1464 | as_warn (_(".previous without corresponding .section; ignored")); |
252b5132 RH |
1465 | return; |
1466 | } | |
1467 | ||
1468 | #ifdef md_flush_pending_output | |
1469 | md_flush_pending_output (); | |
1470 | #endif | |
1471 | ||
9de8d8f1 RH |
1472 | new_section = previous_section; |
1473 | new_subsection = previous_subsection; | |
1474 | previous_section = now_seg; | |
1475 | previous_subsection = now_subseg; | |
1476 | subseg_set (new_section, new_subsection); | |
1477 | ||
1478 | #ifdef md_elf_section_change_hook | |
1479 | md_elf_section_change_hook (); | |
1480 | #endif | |
1481 | } | |
1482 | ||
1483 | static void | |
dbe2df79 | 1484 | obj_elf_popsection (int xxx ATTRIBUTE_UNUSED) |
9de8d8f1 RH |
1485 | { |
1486 | struct section_stack *top = section_stack; | |
1487 | ||
1488 | if (top == NULL) | |
1489 | { | |
6ce8b369 | 1490 | as_warn (_(".popsection without corresponding .pushsection; ignored")); |
9de8d8f1 RH |
1491 | return; |
1492 | } | |
1493 | ||
1494 | #ifdef md_flush_pending_output | |
1495 | md_flush_pending_output (); | |
1496 | #endif | |
1497 | ||
1498 | section_stack = top->next; | |
1499 | previous_section = top->prev_seg; | |
1500 | previous_subsection = top->prev_subseg; | |
1501 | subseg_set (top->seg, top->subseg); | |
1502 | free (top); | |
252b5132 RH |
1503 | |
1504 | #ifdef md_elf_section_change_hook | |
1505 | md_elf_section_change_hook (); | |
1506 | #endif | |
1507 | } | |
1508 | ||
1509 | static void | |
dbe2df79 | 1510 | obj_elf_line (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1511 | { |
1512 | /* Assume delimiter is part of expression. BSD4.2 as fails with | |
bf514e21 | 1513 | delightful bug, so we are not being incompatible here. */ |
dbe2df79 | 1514 | new_logical_line (NULL, get_absolute_expression ()); |
252b5132 RH |
1515 | demand_empty_rest_of_line (); |
1516 | } | |
1517 | ||
1518 | /* This handles the .symver pseudo-op, which is used to specify a | |
1519 | symbol version. The syntax is ``.symver NAME,SYMVERNAME''. | |
1520 | SYMVERNAME may contain ELF_VER_CHR ('@') characters. This | |
1521 | pseudo-op causes the assembler to emit a symbol named SYMVERNAME | |
1522 | with the same value as the symbol NAME. */ | |
1523 | ||
1524 | static void | |
dbe2df79 | 1525 | obj_elf_symver (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1526 | { |
1527 | char *name; | |
1528 | char c; | |
468cced8 | 1529 | char old_lexat; |
252b5132 RH |
1530 | symbolS *sym; |
1531 | ||
6e8bd58f | 1532 | sym = get_sym_from_input_line_and_check (); |
252b5132 | 1533 | |
252b5132 RH |
1534 | if (*input_line_pointer != ',') |
1535 | { | |
1536 | as_bad (_("expected comma after name in .symver")); | |
1537 | ignore_rest_of_line (); | |
1538 | return; | |
1539 | } | |
1540 | ||
1541 | ++input_line_pointer; | |
eba874d8 | 1542 | SKIP_WHITESPACE (); |
468cced8 AM |
1543 | |
1544 | /* Temporarily include '@' in symbol names. */ | |
1545 | old_lexat = lex_type[(unsigned char) '@']; | |
1546 | lex_type[(unsigned char) '@'] |= LEX_NAME; | |
d02603dc | 1547 | c = get_symbol_name (& name); |
468cced8 | 1548 | lex_type[(unsigned char) '@'] = old_lexat; |
252b5132 | 1549 | |
a3aea05a L |
1550 | if (S_IS_COMMON (sym)) |
1551 | { | |
1552 | as_bad (_("`%s' can't be versioned to common symbol '%s'"), | |
1553 | name, S_GET_NAME (sym)); | |
1554 | ignore_rest_of_line (); | |
1555 | return; | |
1556 | } | |
1557 | ||
339681c0 L |
1558 | if (symbol_get_obj (sym)->versioned_name == NULL) |
1559 | { | |
1560 | symbol_get_obj (sym)->versioned_name = xstrdup (name); | |
252b5132 | 1561 | |
d02603dc | 1562 | (void) restore_line_pointer (c); |
252b5132 | 1563 | |
6f620856 L |
1564 | if (strchr (symbol_get_obj (sym)->versioned_name, |
1565 | ELF_VER_CHR) == NULL) | |
339681c0 L |
1566 | { |
1567 | as_bad (_("missing version name in `%s' for symbol `%s'"), | |
1568 | symbol_get_obj (sym)->versioned_name, | |
1569 | S_GET_NAME (sym)); | |
1570 | ignore_rest_of_line (); | |
1571 | return; | |
1572 | } | |
1573 | } | |
1574 | else | |
252b5132 | 1575 | { |
339681c0 L |
1576 | if (strcmp (symbol_get_obj (sym)->versioned_name, name)) |
1577 | { | |
1578 | as_bad (_("multiple versions [`%s'|`%s'] for symbol `%s'"), | |
1579 | name, symbol_get_obj (sym)->versioned_name, | |
1580 | S_GET_NAME (sym)); | |
1581 | ignore_rest_of_line (); | |
1582 | return; | |
1583 | } | |
1584 | ||
d02603dc | 1585 | (void) restore_line_pointer (c); |
252b5132 RH |
1586 | } |
1587 | ||
1588 | demand_empty_rest_of_line (); | |
1589 | } | |
1590 | ||
1591 | /* This handles the .vtable_inherit pseudo-op, which is used to indicate | |
1592 | to the linker the hierarchy in which a particular table resides. The | |
1593 | syntax is ".vtable_inherit CHILDNAME, PARENTNAME". */ | |
1594 | ||
904a31bf | 1595 | struct fix * |
68d20676 | 1596 | obj_elf_get_vtable_inherit (void) |
252b5132 RH |
1597 | { |
1598 | char *cname, *pname; | |
1599 | symbolS *csym, *psym; | |
1600 | char c, bad = 0; | |
1601 | ||
1602 | if (*input_line_pointer == '#') | |
1603 | ++input_line_pointer; | |
1604 | ||
d02603dc | 1605 | c = get_symbol_name (& cname); |
252b5132 RH |
1606 | csym = symbol_find (cname); |
1607 | ||
1608 | /* GCFIXME: should check that we don't have two .vtable_inherits for | |
1609 | the same child symbol. Also, we can currently only do this if the | |
1610 | child symbol is already exists and is placed in a fragment. */ | |
1611 | ||
49309057 | 1612 | if (csym == NULL || symbol_get_frag (csym) == NULL) |
252b5132 | 1613 | { |
bd3ba5d1 | 1614 | as_bad (_("expected `%s' to have already been set for .vtable_inherit"), |
252b5132 RH |
1615 | cname); |
1616 | bad = 1; | |
1617 | } | |
1618 | ||
1619 | *input_line_pointer = c; | |
1620 | ||
d02603dc | 1621 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
1622 | if (*input_line_pointer != ',') |
1623 | { | |
bd3ba5d1 | 1624 | as_bad (_("expected comma after name in .vtable_inherit")); |
252b5132 | 1625 | ignore_rest_of_line (); |
904a31bf | 1626 | return NULL; |
252b5132 RH |
1627 | } |
1628 | ||
1629 | ++input_line_pointer; | |
1630 | SKIP_WHITESPACE (); | |
1631 | ||
1632 | if (*input_line_pointer == '#') | |
1633 | ++input_line_pointer; | |
1634 | ||
1635 | if (input_line_pointer[0] == '0' | |
1636 | && (input_line_pointer[1] == '\0' | |
3882b010 | 1637 | || ISSPACE (input_line_pointer[1]))) |
252b5132 RH |
1638 | { |
1639 | psym = section_symbol (absolute_section); | |
1640 | ++input_line_pointer; | |
1641 | } | |
1642 | else | |
1643 | { | |
d02603dc | 1644 | c = get_symbol_name (& pname); |
252b5132 | 1645 | psym = symbol_find_or_make (pname); |
d02603dc | 1646 | restore_line_pointer (c); |
252b5132 RH |
1647 | } |
1648 | ||
1649 | demand_empty_rest_of_line (); | |
1650 | ||
1651 | if (bad) | |
904a31bf | 1652 | return NULL; |
252b5132 | 1653 | |
9c2799c2 | 1654 | gas_assert (symbol_get_value_expression (csym)->X_op == O_constant); |
904a31bf AM |
1655 | return fix_new (symbol_get_frag (csym), |
1656 | symbol_get_value_expression (csym)->X_add_number, | |
1657 | 0, psym, 0, 0, BFD_RELOC_VTABLE_INHERIT); | |
252b5132 | 1658 | } |
fa306131 | 1659 | |
68d20676 NC |
1660 | /* This is a version of obj_elf_get_vtable_inherit() that is |
1661 | suitable for use in struct _pseudo_type tables. */ | |
1662 | ||
1663 | void | |
1664 | obj_elf_vtable_inherit (int ignore ATTRIBUTE_UNUSED) | |
1665 | { | |
1666 | (void) obj_elf_get_vtable_inherit (); | |
1667 | } | |
1668 | ||
252b5132 RH |
1669 | /* This handles the .vtable_entry pseudo-op, which is used to indicate |
1670 | to the linker that a vtable slot was used. The syntax is | |
1671 | ".vtable_entry tablename, offset". */ | |
1672 | ||
904a31bf | 1673 | struct fix * |
68d20676 | 1674 | obj_elf_get_vtable_entry (void) |
252b5132 | 1675 | { |
252b5132 RH |
1676 | symbolS *sym; |
1677 | offsetT offset; | |
252b5132 RH |
1678 | |
1679 | if (*input_line_pointer == '#') | |
1680 | ++input_line_pointer; | |
1681 | ||
6e8bd58f | 1682 | sym = get_sym_from_input_line_and_check (); |
252b5132 RH |
1683 | if (*input_line_pointer != ',') |
1684 | { | |
bd3ba5d1 | 1685 | as_bad (_("expected comma after name in .vtable_entry")); |
252b5132 | 1686 | ignore_rest_of_line (); |
904a31bf | 1687 | return NULL; |
252b5132 RH |
1688 | } |
1689 | ||
1690 | ++input_line_pointer; | |
1691 | if (*input_line_pointer == '#') | |
1692 | ++input_line_pointer; | |
1693 | ||
1694 | offset = get_absolute_expression (); | |
1695 | ||
252b5132 | 1696 | demand_empty_rest_of_line (); |
904a31bf AM |
1697 | |
1698 | return fix_new (frag_now, frag_now_fix (), 0, sym, offset, 0, | |
1699 | BFD_RELOC_VTABLE_ENTRY); | |
252b5132 RH |
1700 | } |
1701 | ||
68d20676 NC |
1702 | /* This is a version of obj_elf_get_vtable_entry() that is |
1703 | suitable for use in struct _pseudo_type tables. */ | |
1704 | ||
1705 | void | |
1706 | obj_elf_vtable_entry (int ignore ATTRIBUTE_UNUSED) | |
1707 | { | |
1708 | (void) obj_elf_get_vtable_entry (); | |
1709 | } | |
1710 | ||
0420f52b MR |
1711 | #define skip_whitespace(str) do { if (*(str) == ' ') ++(str); } while (0) |
1712 | ||
1713 | static inline int | |
1714 | skip_past_char (char ** str, char c) | |
1715 | { | |
1716 | if (**str == c) | |
1717 | { | |
1718 | (*str)++; | |
1719 | return 0; | |
1720 | } | |
1721 | else | |
1722 | return -1; | |
1723 | } | |
1724 | #define skip_past_comma(str) skip_past_char (str, ',') | |
1725 | ||
9440a904 RS |
1726 | /* A list of attributes that have been explicitly set by the assembly code. |
1727 | VENDOR is the vendor id, BASE is the tag shifted right by the number | |
1728 | of bits in MASK, and bit N of MASK is set if tag BASE+N has been set. */ | |
1729 | struct recorded_attribute_info { | |
1730 | struct recorded_attribute_info *next; | |
1731 | int vendor; | |
1732 | unsigned int base; | |
1733 | unsigned long mask; | |
1734 | }; | |
1735 | static struct recorded_attribute_info *recorded_attributes; | |
1736 | ||
1737 | /* Record that we have seen an explicit specification of attribute TAG | |
1738 | for vendor VENDOR. */ | |
1739 | ||
1740 | static void | |
1741 | record_attribute (int vendor, unsigned int tag) | |
1742 | { | |
1743 | unsigned int base; | |
1744 | unsigned long mask; | |
1745 | struct recorded_attribute_info *rai; | |
1746 | ||
1747 | base = tag / (8 * sizeof (rai->mask)); | |
1748 | mask = 1UL << (tag % (8 * sizeof (rai->mask))); | |
1749 | for (rai = recorded_attributes; rai; rai = rai->next) | |
1750 | if (rai->vendor == vendor && rai->base == base) | |
1751 | { | |
1752 | rai->mask |= mask; | |
1753 | return; | |
1754 | } | |
1755 | ||
1756 | rai = XNEW (struct recorded_attribute_info); | |
1757 | rai->next = recorded_attributes; | |
1758 | rai->vendor = vendor; | |
1759 | rai->base = base; | |
1760 | rai->mask = mask; | |
1761 | recorded_attributes = rai; | |
1762 | } | |
1763 | ||
1764 | /* Return true if we have seen an explicit specification of attribute TAG | |
1765 | for vendor VENDOR. */ | |
1766 | ||
1767 | bfd_boolean | |
1768 | obj_elf_seen_attribute (int vendor, unsigned int tag) | |
1769 | { | |
1770 | unsigned int base; | |
1771 | unsigned long mask; | |
1772 | struct recorded_attribute_info *rai; | |
1773 | ||
1774 | base = tag / (8 * sizeof (rai->mask)); | |
1775 | mask = 1UL << (tag % (8 * sizeof (rai->mask))); | |
1776 | for (rai = recorded_attributes; rai; rai = rai->next) | |
1777 | if (rai->vendor == vendor && rai->base == base) | |
1778 | return (rai->mask & mask) != 0; | |
1779 | return FALSE; | |
1780 | } | |
1781 | ||
0420f52b MR |
1782 | /* Parse an attribute directive for VENDOR. |
1783 | Returns the attribute number read, or zero on error. */ | |
1784 | ||
1785 | int | |
1786 | obj_elf_vendor_attribute (int vendor) | |
1787 | { | |
1788 | expressionS exp; | |
1789 | int type; | |
1790 | int tag; | |
1791 | unsigned int i = 0; | |
1792 | char *s = NULL; | |
1793 | ||
1794 | /* Read the first number or name. */ | |
1795 | skip_whitespace (input_line_pointer); | |
1796 | s = input_line_pointer; | |
1797 | if (ISDIGIT (*input_line_pointer)) | |
1798 | { | |
1799 | expression (& exp); | |
1800 | if (exp.X_op != O_constant) | |
1801 | goto bad; | |
1802 | tag = exp.X_add_number; | |
1803 | } | |
1804 | else | |
1805 | { | |
1806 | char *name; | |
1807 | ||
1808 | /* A name may contain '_', but no other punctuation. */ | |
1809 | for (; ISALNUM (*input_line_pointer) || *input_line_pointer == '_'; | |
1810 | ++input_line_pointer) | |
1811 | i++; | |
1812 | if (i == 0) | |
1813 | goto bad; | |
1814 | ||
a44e2901 | 1815 | name = xstrndup (s, i); |
0420f52b MR |
1816 | |
1817 | #ifndef CONVERT_SYMBOLIC_ATTRIBUTE | |
1818 | #define CONVERT_SYMBOLIC_ATTRIBUTE(a) -1 | |
1819 | #endif | |
1820 | ||
1821 | tag = CONVERT_SYMBOLIC_ATTRIBUTE (name); | |
1822 | if (tag == -1) | |
1823 | { | |
1824 | as_bad (_("Attribute name not recognised: %s"), name); | |
1825 | ignore_rest_of_line (); | |
e1fa0163 | 1826 | free (name); |
0420f52b MR |
1827 | return 0; |
1828 | } | |
e1fa0163 | 1829 | free (name); |
0420f52b MR |
1830 | } |
1831 | ||
1832 | type = _bfd_elf_obj_attrs_arg_type (stdoutput, vendor, tag); | |
1833 | ||
1834 | if (skip_past_comma (&input_line_pointer) == -1) | |
1835 | goto bad; | |
1836 | if (type & 1) | |
1837 | { | |
1838 | expression (& exp); | |
1839 | if (exp.X_op != O_constant) | |
1840 | { | |
1841 | as_bad (_("expected numeric constant")); | |
1842 | ignore_rest_of_line (); | |
1843 | return 0; | |
1844 | } | |
1845 | i = exp.X_add_number; | |
1846 | } | |
1847 | if ((type & 3) == 3 | |
1848 | && skip_past_comma (&input_line_pointer) == -1) | |
1849 | { | |
1850 | as_bad (_("expected comma")); | |
1851 | ignore_rest_of_line (); | |
1852 | return 0; | |
1853 | } | |
1854 | if (type & 2) | |
1855 | { | |
1856 | int len; | |
1857 | ||
1858 | skip_whitespace (input_line_pointer); | |
1859 | if (*input_line_pointer != '"') | |
1860 | goto bad_string; | |
1861 | s = demand_copy_C_string (&len); | |
1862 | } | |
1863 | ||
9440a904 | 1864 | record_attribute (vendor, tag); |
0420f52b MR |
1865 | switch (type & 3) |
1866 | { | |
1867 | case 3: | |
1868 | bfd_elf_add_obj_attr_int_string (stdoutput, vendor, tag, i, s); | |
1869 | break; | |
1870 | case 2: | |
1871 | bfd_elf_add_obj_attr_string (stdoutput, vendor, tag, s); | |
1872 | break; | |
1873 | case 1: | |
1874 | bfd_elf_add_obj_attr_int (stdoutput, vendor, tag, i); | |
1875 | break; | |
1876 | default: | |
1877 | abort (); | |
1878 | } | |
1879 | ||
1880 | demand_empty_rest_of_line (); | |
1881 | return tag; | |
dc1e8a47 | 1882 | bad_string: |
0420f52b MR |
1883 | as_bad (_("bad string constant")); |
1884 | ignore_rest_of_line (); | |
1885 | return 0; | |
dc1e8a47 | 1886 | bad: |
0420f52b MR |
1887 | as_bad (_("expected <tag> , <value>")); |
1888 | ignore_rest_of_line (); | |
1889 | return 0; | |
1890 | } | |
1891 | ||
1892 | /* Parse a .gnu_attribute directive. */ | |
1893 | ||
1894 | static void | |
1895 | obj_elf_gnu_attribute (int ignored ATTRIBUTE_UNUSED) | |
1896 | { | |
1897 | obj_elf_vendor_attribute (OBJ_ATTR_GNU); | |
1898 | } | |
1899 | ||
252b5132 | 1900 | void |
dbe2df79 | 1901 | elf_obj_read_begin_hook (void) |
252b5132 RH |
1902 | { |
1903 | #ifdef NEED_ECOFF_DEBUG | |
1904 | if (ECOFF_DEBUGGING) | |
1905 | ecoff_read_begin_hook (); | |
1906 | #endif | |
1907 | } | |
1908 | ||
1909 | void | |
dbe2df79 | 1910 | elf_obj_symbol_new_hook (symbolS *symbolP) |
252b5132 | 1911 | { |
49309057 ILT |
1912 | struct elf_obj_sy *sy_obj; |
1913 | ||
1914 | sy_obj = symbol_get_obj (symbolP); | |
1915 | sy_obj->size = NULL; | |
1916 | sy_obj->versioned_name = NULL; | |
252b5132 RH |
1917 | |
1918 | #ifdef NEED_ECOFF_DEBUG | |
1919 | if (ECOFF_DEBUGGING) | |
1920 | ecoff_symbol_new_hook (symbolP); | |
1921 | #endif | |
1922 | } | |
1923 | ||
8fd3e36b AM |
1924 | /* When setting one symbol equal to another, by default we probably |
1925 | want them to have the same "size", whatever it means in the current | |
1926 | context. */ | |
1927 | ||
1928 | void | |
dbe2df79 | 1929 | elf_copy_symbol_attributes (symbolS *dest, symbolS *src) |
8fd3e36b | 1930 | { |
060adf0e AM |
1931 | struct elf_obj_sy *srcelf = symbol_get_obj (src); |
1932 | struct elf_obj_sy *destelf = symbol_get_obj (dest); | |
1933 | if (srcelf->size) | |
1934 | { | |
1935 | if (destelf->size == NULL) | |
325801bd | 1936 | destelf->size = XNEW (expressionS); |
060adf0e AM |
1937 | *destelf->size = *srcelf->size; |
1938 | } | |
1939 | else | |
1940 | { | |
1941 | if (destelf->size != NULL) | |
1942 | free (destelf->size); | |
1943 | destelf->size = NULL; | |
1944 | } | |
1945 | S_SET_SIZE (dest, S_GET_SIZE (src)); | |
26eb4093 JJ |
1946 | /* Don't copy visibility. */ |
1947 | S_SET_OTHER (dest, (ELF_ST_VISIBILITY (S_GET_OTHER (dest)) | |
1948 | | (S_GET_OTHER (src) & ~ELF_ST_VISIBILITY (-1)))); | |
8fd3e36b AM |
1949 | } |
1950 | ||
252b5132 | 1951 | void |
dbe2df79 | 1952 | obj_elf_version (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1953 | { |
1954 | char *name; | |
1955 | unsigned int c; | |
252b5132 RH |
1956 | char *p; |
1957 | asection *seg = now_seg; | |
1958 | subsegT subseg = now_subseg; | |
1959 | Elf_Internal_Note i_note; | |
1960 | Elf_External_Note e_note; | |
dbe2df79 | 1961 | asection *note_secp = NULL; |
252b5132 RH |
1962 | |
1963 | SKIP_WHITESPACE (); | |
1964 | if (*input_line_pointer == '\"') | |
1965 | { | |
6afdfa61 NC |
1966 | unsigned int len; |
1967 | ||
bf514e21 | 1968 | ++input_line_pointer; /* -> 1st char of string. */ |
252b5132 RH |
1969 | name = input_line_pointer; |
1970 | ||
1971 | while (is_a_char (c = next_char_of_string ())) | |
1972 | ; | |
1973 | c = *input_line_pointer; | |
1974 | *input_line_pointer = '\0'; | |
1975 | *(input_line_pointer - 1) = '\0'; | |
1976 | *input_line_pointer = c; | |
1977 | ||
6afdfa61 | 1978 | /* Create the .note section. */ |
252b5132 | 1979 | note_secp = subseg_new (".note", 0); |
fd361982 | 1980 | bfd_set_section_flags (note_secp, SEC_HAS_CONTENTS | SEC_READONLY); |
ed9c7ee0 | 1981 | record_alignment (note_secp, 2); |
252b5132 | 1982 | |
6afdfa61 NC |
1983 | /* Process the version string. */ |
1984 | len = strlen (name) + 1; | |
252b5132 | 1985 | |
6afdfa61 NC |
1986 | /* PR 3456: Although the name field is padded out to an 4-byte |
1987 | boundary, the namesz field should not be adjusted. */ | |
1988 | i_note.namesz = len; | |
1989 | i_note.descsz = 0; /* No description. */ | |
252b5132 RH |
1990 | i_note.type = NT_VERSION; |
1991 | p = frag_more (sizeof (e_note.namesz)); | |
dbe2df79 | 1992 | md_number_to_chars (p, i_note.namesz, sizeof (e_note.namesz)); |
252b5132 | 1993 | p = frag_more (sizeof (e_note.descsz)); |
dbe2df79 | 1994 | md_number_to_chars (p, i_note.descsz, sizeof (e_note.descsz)); |
252b5132 | 1995 | p = frag_more (sizeof (e_note.type)); |
dbe2df79 | 1996 | md_number_to_chars (p, i_note.type, sizeof (e_note.type)); |
6afdfa61 | 1997 | p = frag_more (len); |
5ab504f9 | 1998 | memcpy (p, name, len); |
252b5132 | 1999 | |
252b5132 RH |
2000 | frag_align (2, 0, 0); |
2001 | ||
2002 | subseg_set (seg, subseg); | |
2003 | } | |
2004 | else | |
6afdfa61 NC |
2005 | as_bad (_("expected quoted string")); |
2006 | ||
252b5132 RH |
2007 | demand_empty_rest_of_line (); |
2008 | } | |
2009 | ||
2010 | static void | |
dbe2df79 | 2011 | obj_elf_size (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2012 | { |
d02603dc NC |
2013 | char *name; |
2014 | char c = get_symbol_name (&name); | |
252b5132 RH |
2015 | char *p; |
2016 | expressionS exp; | |
2017 | symbolS *sym; | |
2018 | ||
2019 | p = input_line_pointer; | |
2020 | *p = c; | |
d02603dc | 2021 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
2022 | if (*input_line_pointer != ',') |
2023 | { | |
2024 | *p = 0; | |
2025 | as_bad (_("expected comma after name `%s' in .size directive"), name); | |
2026 | *p = c; | |
2027 | ignore_rest_of_line (); | |
2028 | return; | |
2029 | } | |
2030 | input_line_pointer++; | |
2031 | expression (&exp); | |
2032 | if (exp.X_op == O_absent) | |
2033 | { | |
2034 | as_bad (_("missing expression in .size directive")); | |
2035 | exp.X_op = O_constant; | |
2036 | exp.X_add_number = 0; | |
2037 | } | |
2038 | *p = 0; | |
2039 | sym = symbol_find_or_make (name); | |
2040 | *p = c; | |
2041 | if (exp.X_op == O_constant) | |
c538998c JJ |
2042 | { |
2043 | S_SET_SIZE (sym, exp.X_add_number); | |
2044 | if (symbol_get_obj (sym)->size) | |
2045 | { | |
2046 | xfree (symbol_get_obj (sym)->size); | |
2047 | symbol_get_obj (sym)->size = NULL; | |
2048 | } | |
2049 | } | |
252b5132 RH |
2050 | else |
2051 | { | |
325801bd | 2052 | symbol_get_obj (sym)->size = XNEW (expressionS); |
49309057 | 2053 | *symbol_get_obj (sym)->size = exp; |
252b5132 RH |
2054 | } |
2055 | demand_empty_rest_of_line (); | |
2056 | } | |
2057 | ||
2058 | /* Handle the ELF .type pseudo-op. This sets the type of a symbol. | |
44bf2362 | 2059 | There are six syntaxes: |
fa306131 | 2060 | |
252b5132 RH |
2061 | The first (used on Solaris) is |
2062 | .type SYM,#function | |
2063 | The second (used on UnixWare) is | |
2064 | .type SYM,@function | |
2065 | The third (reportedly to be used on Irix 6.0) is | |
2066 | .type SYM STT_FUNC | |
2067 | The fourth (used on NetBSD/Arm and Linux/ARM) is | |
2068 | .type SYM,%function | |
aa8c34c3 JE |
2069 | The fifth (used on SVR4/860) is |
2070 | .type SYM,"function" | |
44bf2362 NC |
2071 | The sixth (emitted by recent SunPRO under Solaris) is |
2072 | .type SYM,[0-9] | |
2073 | where the integer is the STT_* value. | |
252b5132 RH |
2074 | */ |
2075 | ||
44bf2362 NC |
2076 | static char * |
2077 | obj_elf_type_name (char *cp) | |
2078 | { | |
2079 | char *p; | |
2080 | ||
2081 | p = input_line_pointer; | |
2082 | if (*input_line_pointer >= '0' | |
2083 | && *input_line_pointer <= '9') | |
2084 | { | |
2085 | while (*input_line_pointer >= '0' | |
2086 | && *input_line_pointer <= '9') | |
2087 | ++input_line_pointer; | |
2088 | *cp = *input_line_pointer; | |
2089 | *input_line_pointer = '\0'; | |
2090 | } | |
2091 | else | |
d02603dc | 2092 | *cp = get_symbol_name (&p); |
44bf2362 NC |
2093 | |
2094 | return p; | |
2095 | } | |
2096 | ||
252b5132 | 2097 | static void |
dbe2df79 | 2098 | obj_elf_type (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2099 | { |
252b5132 RH |
2100 | char c; |
2101 | int type; | |
1e9cc1c2 | 2102 | const char *type_name; |
252b5132 | 2103 | symbolS *sym; |
904a31bf | 2104 | elf_symbol_type *elfsym; |
252b5132 | 2105 | |
6e8bd58f NS |
2106 | sym = get_sym_from_input_line_and_check (); |
2107 | c = *input_line_pointer; | |
904a31bf | 2108 | elfsym = (elf_symbol_type *) symbol_get_bfdsym (sym); |
252b5132 | 2109 | |
252b5132 RH |
2110 | if (*input_line_pointer == ',') |
2111 | ++input_line_pointer; | |
2112 | ||
2113 | SKIP_WHITESPACE (); | |
2114 | if ( *input_line_pointer == '#' | |
2115 | || *input_line_pointer == '@' | |
aa8c34c3 | 2116 | || *input_line_pointer == '"' |
252b5132 RH |
2117 | || *input_line_pointer == '%') |
2118 | ++input_line_pointer; | |
2119 | ||
1e9cc1c2 | 2120 | type_name = obj_elf_type_name (& c); |
252b5132 RH |
2121 | |
2122 | type = 0; | |
1e9cc1c2 NC |
2123 | if (strcmp (type_name, "function") == 0 |
2124 | || strcmp (type_name, "2") == 0 | |
2125 | || strcmp (type_name, "STT_FUNC") == 0) | |
252b5132 | 2126 | type = BSF_FUNCTION; |
1e9cc1c2 NC |
2127 | else if (strcmp (type_name, "object") == 0 |
2128 | || strcmp (type_name, "1") == 0 | |
2129 | || strcmp (type_name, "STT_OBJECT") == 0) | |
252b5132 | 2130 | type = BSF_OBJECT; |
1e9cc1c2 NC |
2131 | else if (strcmp (type_name, "tls_object") == 0 |
2132 | || strcmp (type_name, "6") == 0 | |
2133 | || strcmp (type_name, "STT_TLS") == 0) | |
b9734f35 | 2134 | type = BSF_OBJECT | BSF_THREAD_LOCAL; |
1e9cc1c2 NC |
2135 | else if (strcmp (type_name, "notype") == 0 |
2136 | || strcmp (type_name, "0") == 0 | |
2137 | || strcmp (type_name, "STT_NOTYPE") == 0) | |
e7b9a8c1 | 2138 | ; |
1e9cc1c2 NC |
2139 | else if (strcmp (type_name, "common") == 0 |
2140 | || strcmp (type_name, "5") == 0 | |
2141 | || strcmp (type_name, "STT_COMMON") == 0) | |
504b7d20 NC |
2142 | { |
2143 | type = BSF_OBJECT; | |
2144 | ||
2145 | if (! S_IS_COMMON (sym)) | |
2146 | { | |
2147 | if (S_IS_VOLATILE (sym)) | |
2148 | { | |
2149 | sym = symbol_clone (sym, 1); | |
2150 | S_SET_SEGMENT (sym, bfd_com_section_ptr); | |
2151 | S_SET_VALUE (sym, 0); | |
2152 | S_SET_EXTERNAL (sym); | |
2153 | symbol_set_frag (sym, &zero_address_frag); | |
2154 | S_CLEAR_VOLATILE (sym); | |
2155 | } | |
2156 | else if (S_IS_DEFINED (sym) || symbol_equated_p (sym)) | |
2157 | as_bad (_("symbol '%s' is already defined"), S_GET_NAME (sym)); | |
2158 | else | |
2159 | { | |
2160 | /* FIXME: Is it safe to just change the section ? */ | |
2161 | S_SET_SEGMENT (sym, bfd_com_section_ptr); | |
2162 | S_SET_VALUE (sym, 0); | |
2163 | S_SET_EXTERNAL (sym); | |
2164 | } | |
2165 | } | |
2166 | } | |
1e9cc1c2 NC |
2167 | else if (strcmp (type_name, "gnu_indirect_function") == 0 |
2168 | || strcmp (type_name, "10") == 0 | |
2169 | || strcmp (type_name, "STT_GNU_IFUNC") == 0) | |
d8045f23 | 2170 | { |
df3a023b AM |
2171 | struct elf_backend_data *bed; |
2172 | ||
2173 | bed = (struct elf_backend_data *) get_elf_backend_data (stdoutput); | |
2174 | if (bed->elf_osabi == ELFOSABI_NONE) | |
2175 | bed->elf_osabi = ELFOSABI_GNU; | |
2176 | else if (bed->elf_osabi != ELFOSABI_GNU | |
2177 | && bed->elf_osabi != ELFOSABI_FREEBSD) | |
2178 | as_bad (_("symbol type \"%s\" is supported only by GNU " | |
2179 | "and FreeBSD targets"), type_name); | |
8e4979ac NC |
2180 | /* MIPS targets do not support IFUNCS. */ |
2181 | else if (bed->target_id == MIPS_ELF_DATA) | |
2182 | as_bad (_("symbol type \"%s\" is not supported by " | |
2183 | "MIPS targets"), type_name); | |
cc364be6 | 2184 | elf_tdata (stdoutput)->has_gnu_osabi |= elf_gnu_osabi_ifunc; |
d8045f23 NC |
2185 | type = BSF_FUNCTION | BSF_GNU_INDIRECT_FUNCTION; |
2186 | } | |
1e9cc1c2 | 2187 | else if (strcmp (type_name, "gnu_unique_object") == 0) |
3e7a7d11 | 2188 | { |
d3ce72d0 | 2189 | struct elf_backend_data *bed; |
3e7a7d11 | 2190 | |
d3ce72d0 | 2191 | bed = (struct elf_backend_data *) get_elf_backend_data (stdoutput); |
df3a023b AM |
2192 | if (bed->elf_osabi == ELFOSABI_NONE) |
2193 | bed->elf_osabi = ELFOSABI_GNU; | |
2194 | else if (bed->elf_osabi != ELFOSABI_GNU) | |
3e7a7d11 | 2195 | as_bad (_("symbol type \"%s\" is supported only by GNU targets"), |
1e9cc1c2 | 2196 | type_name); |
cc364be6 | 2197 | elf_tdata (stdoutput)->has_gnu_osabi |= elf_gnu_osabi_unique; |
3e7a7d11 NC |
2198 | type = BSF_OBJECT | BSF_GNU_UNIQUE; |
2199 | } | |
904a31bf | 2200 | #ifdef md_elf_symbol_type |
1e9cc1c2 | 2201 | else if ((type = md_elf_symbol_type (type_name, sym, elfsym)) != -1) |
904a31bf AM |
2202 | ; |
2203 | #endif | |
252b5132 | 2204 | else |
1e9cc1c2 | 2205 | as_bad (_("unrecognized symbol type \"%s\""), type_name); |
252b5132 RH |
2206 | |
2207 | *input_line_pointer = c; | |
2208 | ||
aa8c34c3 JE |
2209 | if (*input_line_pointer == '"') |
2210 | ++input_line_pointer; | |
2211 | ||
f2d4ba38 JB |
2212 | #ifdef md_elf_symbol_type_change |
2213 | if (!md_elf_symbol_type_change (sym, elfsym, type)) | |
2214 | #endif | |
2215 | { | |
2216 | flagword mask = BSF_FUNCTION | BSF_OBJECT; | |
2217 | ||
2218 | if (type != BSF_FUNCTION) | |
2219 | mask |= BSF_GNU_INDIRECT_FUNCTION; | |
2220 | if (type != BSF_OBJECT) | |
2221 | { | |
2222 | mask |= BSF_GNU_UNIQUE | BSF_THREAD_LOCAL; | |
2223 | ||
2224 | if (S_IS_COMMON (sym)) | |
2225 | { | |
2226 | as_bad (_("cannot change type of common symbol '%s'"), | |
2227 | S_GET_NAME (sym)); | |
2228 | mask = type = 0; | |
2229 | } | |
2230 | } | |
2231 | ||
2232 | /* Don't warn when changing to STT_NOTYPE. */ | |
2233 | if (type) | |
2234 | { | |
2235 | flagword new = (elfsym->symbol.flags & ~mask) | type; | |
2236 | ||
2237 | if (new != (elfsym->symbol.flags | type)) | |
2238 | as_warn (_("symbol '%s' already has its type set"), S_GET_NAME (sym)); | |
2239 | elfsym->symbol.flags = new; | |
2240 | } | |
2241 | else | |
2242 | elfsym->symbol.flags &= ~mask; | |
2243 | } | |
252b5132 RH |
2244 | |
2245 | demand_empty_rest_of_line (); | |
2246 | } | |
2247 | ||
2248 | static void | |
dbe2df79 | 2249 | obj_elf_ident (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2250 | { |
2251 | static segT comment_section; | |
2252 | segT old_section = now_seg; | |
2253 | int old_subsection = now_subseg; | |
2254 | ||
5f91fe03 ILT |
2255 | #ifdef md_flush_pending_output |
2256 | md_flush_pending_output (); | |
2257 | #endif | |
2258 | ||
252b5132 RH |
2259 | if (!comment_section) |
2260 | { | |
2261 | char *p; | |
2262 | comment_section = subseg_new (".comment", 0); | |
fd361982 AM |
2263 | bfd_set_section_flags (comment_section, (SEC_READONLY | SEC_HAS_CONTENTS |
2264 | | SEC_MERGE | SEC_STRINGS)); | |
01fb1836 | 2265 | comment_section->entsize = 1; |
cd000bff DJ |
2266 | #ifdef md_elf_section_change_hook |
2267 | md_elf_section_change_hook (); | |
2268 | #endif | |
252b5132 RH |
2269 | p = frag_more (1); |
2270 | *p = 0; | |
2271 | } | |
2272 | else | |
2273 | subseg_set (comment_section, 0); | |
38a57ae7 | 2274 | stringer (8 + 1); |
252b5132 RH |
2275 | subseg_set (old_section, old_subsection); |
2276 | } | |
2277 | ||
2278 | #ifdef INIT_STAB_SECTION | |
2279 | ||
2280 | /* The first entry in a .stabs section is special. */ | |
2281 | ||
2282 | void | |
dbe2df79 | 2283 | obj_elf_init_stab_section (segT seg) |
252b5132 | 2284 | { |
3b4dbbbf | 2285 | const char *file; |
252b5132 RH |
2286 | char *p; |
2287 | char *stabstr_name; | |
2288 | unsigned int stroff; | |
2289 | ||
2290 | /* Force the section to align to a longword boundary. Without this, | |
2291 | UnixWare ar crashes. */ | |
fd361982 | 2292 | bfd_set_section_alignment (seg, 2); |
252b5132 | 2293 | |
bf514e21 | 2294 | /* Make space for this first symbol. */ |
252b5132 | 2295 | p = frag_more (12); |
bf514e21 | 2296 | /* Zero it out. */ |
252b5132 | 2297 | memset (p, 0, 12); |
3b4dbbbf | 2298 | file = as_where (NULL); |
29a2809e | 2299 | stabstr_name = concat (segment_name (seg), "str", (char *) NULL); |
0acc7632 | 2300 | stroff = get_stab_string_offset (file, stabstr_name, TRUE); |
91952a06 | 2301 | know (stroff == 1 || (stroff == 0 && file[0] == '\0')); |
252b5132 RH |
2302 | md_number_to_chars (p, stroff, 4); |
2303 | seg_info (seg)->stabu.p = p; | |
2304 | } | |
2305 | ||
2306 | #endif | |
2307 | ||
2308 | /* Fill in the counts in the first entry in a .stabs section. */ | |
2309 | ||
2310 | static void | |
dbe2df79 | 2311 | adjust_stab_sections (bfd *abfd, asection *sec, void *xxx ATTRIBUTE_UNUSED) |
252b5132 RH |
2312 | { |
2313 | char *name; | |
2314 | asection *strsec; | |
2315 | char *p; | |
2316 | int strsz, nsyms; | |
2317 | ||
2318 | if (strncmp (".stab", sec->name, 5)) | |
2319 | return; | |
2320 | if (!strcmp ("str", sec->name + strlen (sec->name) - 3)) | |
2321 | return; | |
2322 | ||
e1fa0163 | 2323 | name = concat (sec->name, "str", NULL); |
252b5132 RH |
2324 | strsec = bfd_get_section_by_name (abfd, name); |
2325 | if (strsec) | |
fd361982 | 2326 | strsz = bfd_section_size (strsec); |
252b5132 RH |
2327 | else |
2328 | strsz = 0; | |
fd361982 | 2329 | nsyms = bfd_section_size (sec) / 12 - 1; |
252b5132 RH |
2330 | |
2331 | p = seg_info (sec)->stabu.p; | |
9c2799c2 | 2332 | gas_assert (p != 0); |
252b5132 | 2333 | |
dbe2df79 AM |
2334 | bfd_h_put_16 (abfd, nsyms, p + 6); |
2335 | bfd_h_put_32 (abfd, strsz, p + 8); | |
e1fa0163 | 2336 | free (name); |
252b5132 RH |
2337 | } |
2338 | ||
2339 | #ifdef NEED_ECOFF_DEBUG | |
2340 | ||
2341 | /* This function is called by the ECOFF code. It is supposed to | |
2342 | record the external symbol information so that the backend can | |
2343 | write it out correctly. The ELF backend doesn't actually handle | |
2344 | this at the moment, so we do it ourselves. We save the information | |
2345 | in the symbol. */ | |
2346 | ||
ae4a729b AM |
2347 | #ifdef OBJ_MAYBE_ELF |
2348 | static | |
2349 | #endif | |
252b5132 | 2350 | void |
dbe2df79 | 2351 | elf_ecoff_set_ext (symbolS *sym, struct ecoff_extr *ext) |
252b5132 | 2352 | { |
dbe2df79 | 2353 | symbol_get_bfdsym (sym)->udata.p = ext; |
252b5132 RH |
2354 | } |
2355 | ||
2356 | /* This function is called by bfd_ecoff_debug_externals. It is | |
2357 | supposed to *EXT to the external symbol information, and return | |
2358 | whether the symbol should be used at all. */ | |
2359 | ||
b34976b6 | 2360 | static bfd_boolean |
dbe2df79 | 2361 | elf_get_extr (asymbol *sym, EXTR *ext) |
252b5132 RH |
2362 | { |
2363 | if (sym->udata.p == NULL) | |
b34976b6 | 2364 | return FALSE; |
252b5132 | 2365 | *ext = *(EXTR *) sym->udata.p; |
b34976b6 | 2366 | return TRUE; |
252b5132 RH |
2367 | } |
2368 | ||
2369 | /* This function is called by bfd_ecoff_debug_externals. It has | |
2370 | nothing to do for ELF. */ | |
2371 | ||
252b5132 | 2372 | static void |
dbe2df79 AM |
2373 | elf_set_index (asymbol *sym ATTRIBUTE_UNUSED, |
2374 | bfd_size_type indx ATTRIBUTE_UNUSED) | |
252b5132 RH |
2375 | { |
2376 | } | |
2377 | ||
2378 | #endif /* NEED_ECOFF_DEBUG */ | |
2379 | ||
2380 | void | |
dbe2df79 | 2381 | elf_frob_symbol (symbolS *symp, int *puntp) |
252b5132 | 2382 | { |
49309057 | 2383 | struct elf_obj_sy *sy_obj; |
49002d7f | 2384 | expressionS *size; |
49309057 | 2385 | |
252b5132 RH |
2386 | #ifdef NEED_ECOFF_DEBUG |
2387 | if (ECOFF_DEBUGGING) | |
2388 | ecoff_frob_symbol (symp); | |
2389 | #endif | |
2390 | ||
49309057 ILT |
2391 | sy_obj = symbol_get_obj (symp); |
2392 | ||
49002d7f L |
2393 | size = sy_obj->size; |
2394 | if (size != NULL) | |
252b5132 | 2395 | { |
49002d7f L |
2396 | if (resolve_expression (size) |
2397 | && size->X_op == O_constant) | |
2398 | S_SET_SIZE (symp, size->X_add_number); | |
e1e90034 | 2399 | else |
49002d7f | 2400 | { |
a90fb5e3 | 2401 | if (!flag_allow_nonconst_size) |
869fe6ea AM |
2402 | as_bad (_(".size expression for %s " |
2403 | "does not evaluate to a constant"), S_GET_NAME (symp)); | |
21be61f5 | 2404 | else |
869fe6ea AM |
2405 | as_warn (_(".size expression for %s " |
2406 | "does not evaluate to a constant"), S_GET_NAME (symp)); | |
49002d7f | 2407 | } |
49309057 ILT |
2408 | free (sy_obj->size); |
2409 | sy_obj->size = NULL; | |
252b5132 RH |
2410 | } |
2411 | ||
49309057 | 2412 | if (sy_obj->versioned_name != NULL) |
252b5132 | 2413 | { |
79082ff0 L |
2414 | char *p; |
2415 | ||
2416 | p = strchr (sy_obj->versioned_name, ELF_VER_CHR); | |
85024cd8 AM |
2417 | if (p == NULL) |
2418 | /* We will have already reported an error about a missing version. */ | |
2419 | *puntp = TRUE; | |
79082ff0 | 2420 | |
252b5132 RH |
2421 | /* This symbol was given a new name with the .symver directive. |
2422 | ||
13c56984 AM |
2423 | If this is an external reference, just rename the symbol to |
2424 | include the version string. This will make the relocs be | |
2425 | against the correct versioned symbol. | |
252b5132 RH |
2426 | |
2427 | If this is a definition, add an alias. FIXME: Using an alias | |
2428 | will permit the debugging information to refer to the right | |
2429 | symbol. However, it's not clear whether it is the best | |
2430 | approach. */ | |
2431 | ||
85024cd8 | 2432 | else if (! S_IS_DEFINED (symp)) |
252b5132 | 2433 | { |
252b5132 | 2434 | /* Verify that the name isn't using the @@ syntax--this is |
13c56984 AM |
2435 | reserved for definitions of the default version to link |
2436 | against. */ | |
252b5132 RH |
2437 | if (p[1] == ELF_VER_CHR) |
2438 | { | |
85024cd8 AM |
2439 | as_bad (_("invalid attempt to declare external version name" |
2440 | " as default in symbol `%s'"), | |
49309057 | 2441 | sy_obj->versioned_name); |
b34976b6 | 2442 | *puntp = TRUE; |
252b5132 | 2443 | } |
49309057 | 2444 | S_SET_NAME (symp, sy_obj->versioned_name); |
252b5132 RH |
2445 | } |
2446 | else | |
2447 | { | |
dbe2df79 | 2448 | if (p[1] == ELF_VER_CHR && p[2] == ELF_VER_CHR) |
79082ff0 L |
2449 | { |
2450 | size_t l; | |
2451 | ||
2452 | /* The @@@ syntax is a special case. It renames the | |
2453 | symbol name to versioned_name with one `@' removed. */ | |
2454 | l = strlen (&p[3]) + 1; | |
dbe2df79 | 2455 | memmove (&p[2], &p[3], l); |
79082ff0 L |
2456 | S_SET_NAME (symp, sy_obj->versioned_name); |
2457 | } | |
2458 | else | |
2459 | { | |
2460 | symbolS *symp2; | |
252b5132 | 2461 | |
79082ff0 L |
2462 | /* FIXME: Creating a new symbol here is risky. We're |
2463 | in the final loop over the symbol table. We can | |
2464 | get away with it only because the symbol goes to | |
2465 | the end of the list, where the loop will still see | |
2466 | it. It would probably be better to do this in | |
2467 | obj_frob_file_before_adjust. */ | |
252b5132 | 2468 | |
79082ff0 | 2469 | symp2 = symbol_find_or_make (sy_obj->versioned_name); |
252b5132 | 2470 | |
79082ff0 | 2471 | /* Now we act as though we saw symp2 = sym. */ |
a3aea05a L |
2472 | if (S_IS_COMMON (symp)) |
2473 | { | |
2474 | as_bad (_("`%s' can't be versioned to common symbol '%s'"), | |
2475 | sy_obj->versioned_name, S_GET_NAME (symp)); | |
2476 | *puntp = TRUE; | |
2477 | return; | |
2478 | } | |
252b5132 | 2479 | |
79082ff0 | 2480 | S_SET_SEGMENT (symp2, S_GET_SEGMENT (symp)); |
252b5132 | 2481 | |
79082ff0 L |
2482 | /* Subtracting out the frag address here is a hack |
2483 | because we are in the middle of the final loop. */ | |
2484 | S_SET_VALUE (symp2, | |
2485 | (S_GET_VALUE (symp) | |
2486 | - symbol_get_frag (symp)->fr_address)); | |
252b5132 | 2487 | |
79082ff0 | 2488 | symbol_set_frag (symp2, symbol_get_frag (symp)); |
252b5132 | 2489 | |
79082ff0 L |
2490 | /* This will copy over the size information. */ |
2491 | copy_symbol_attributes (symp2, symp); | |
252b5132 | 2492 | |
26eb4093 JJ |
2493 | S_SET_OTHER (symp2, S_GET_OTHER (symp)); |
2494 | ||
79082ff0 L |
2495 | if (S_IS_WEAK (symp)) |
2496 | S_SET_WEAK (symp2); | |
252b5132 | 2497 | |
79082ff0 L |
2498 | if (S_IS_EXTERNAL (symp)) |
2499 | S_SET_EXTERNAL (symp2); | |
2500 | } | |
252b5132 RH |
2501 | } |
2502 | } | |
2503 | ||
2504 | /* Double check weak symbols. */ | |
49309057 | 2505 | if (S_IS_WEAK (symp)) |
252b5132 RH |
2506 | { |
2507 | if (S_IS_COMMON (symp)) | |
6ce8b369 | 2508 | as_bad (_("symbol `%s' can not be both weak and common"), |
252b5132 RH |
2509 | S_GET_NAME (symp)); |
2510 | } | |
252b5132 RH |
2511 | } |
2512 | ||
060adf0e AM |
2513 | struct group_list |
2514 | { | |
2515 | asection **head; /* Section lists. */ | |
060adf0e | 2516 | unsigned int num_group; /* Number of lists. */ |
1e9cc1c2 | 2517 | struct hash_control *indexes; /* Maps group name to index in head array. */ |
060adf0e AM |
2518 | }; |
2519 | ||
db4677b8 AM |
2520 | static struct group_list groups; |
2521 | ||
060adf0e AM |
2522 | /* Called via bfd_map_over_sections. If SEC is a member of a group, |
2523 | add it to a list of sections belonging to the group. INF is a | |
2524 | pointer to a struct group_list, which is where we store the head of | |
b7d07216 L |
2525 | each list. If its link_to_symbol_name isn't NULL, set up its |
2526 | linked-to section. */ | |
060adf0e AM |
2527 | |
2528 | static void | |
b7d07216 L |
2529 | build_additional_section_info (bfd *abfd ATTRIBUTE_UNUSED, |
2530 | asection *sec, void *inf) | |
060adf0e | 2531 | { |
1e9cc1c2 | 2532 | struct group_list *list = (struct group_list *) inf; |
aa1f4858 | 2533 | const char *group_name = elf_group_name (sec); |
060adf0e | 2534 | unsigned int i; |
1e9cc1c2 NC |
2535 | unsigned int *elem_idx; |
2536 | unsigned int *idx_ptr; | |
060adf0e | 2537 | |
b7d07216 L |
2538 | if (sec->map_head.linked_to_symbol_name) |
2539 | { | |
2540 | symbolS *linked_to_sym; | |
2541 | linked_to_sym = symbol_find (sec->map_head.linked_to_symbol_name); | |
2542 | if (!linked_to_sym || !S_IS_DEFINED (linked_to_sym)) | |
2543 | as_bad (_("undefined linked-to symbol `%s' on section `%s'"), | |
2544 | sec->map_head.linked_to_symbol_name, | |
2545 | bfd_section_name (sec)); | |
2546 | else | |
2547 | elf_linked_to_section (sec) = S_GET_SEGMENT (linked_to_sym); | |
2548 | } | |
2549 | ||
060adf0e AM |
2550 | if (group_name == NULL) |
2551 | return; | |
2552 | ||
2553 | /* If this group already has a list, add the section to the head of | |
2554 | the list. */ | |
1e9cc1c2 NC |
2555 | elem_idx = (unsigned int *) hash_find (list->indexes, group_name); |
2556 | if (elem_idx != NULL) | |
060adf0e | 2557 | { |
1e9cc1c2 NC |
2558 | elf_next_in_group (sec) = list->head[*elem_idx]; |
2559 | list->head[*elem_idx] = sec; | |
1e9cc1c2 | 2560 | return; |
060adf0e AM |
2561 | } |
2562 | ||
2563 | /* New group. Make the arrays bigger in chunks to minimize calls to | |
2564 | realloc. */ | |
2565 | i = list->num_group; | |
2566 | if ((i & 127) == 0) | |
2567 | { | |
2568 | unsigned int newsize = i + 128; | |
add39d23 | 2569 | list->head = XRESIZEVEC (asection *, list->head, newsize); |
060adf0e AM |
2570 | } |
2571 | list->head[i] = sec; | |
060adf0e | 2572 | list->num_group += 1; |
1e9cc1c2 NC |
2573 | |
2574 | /* Add index to hash. */ | |
325801bd | 2575 | idx_ptr = XNEW (unsigned int); |
1e9cc1c2 NC |
2576 | *idx_ptr = i; |
2577 | hash_insert (list->indexes, group_name, idx_ptr); | |
2578 | } | |
2579 | ||
2580 | static void free_section_idx (const char *key ATTRIBUTE_UNUSED, void *val) | |
2581 | { | |
2582 | free ((unsigned int *) val); | |
060adf0e AM |
2583 | } |
2584 | ||
db4677b8 AM |
2585 | /* Create symbols for group signature. */ |
2586 | ||
252b5132 | 2587 | void |
709001e9 | 2588 | elf_adjust_symtab (void) |
252b5132 | 2589 | { |
060adf0e AM |
2590 | unsigned int i; |
2591 | ||
060adf0e | 2592 | /* Go find section groups. */ |
db4677b8 AM |
2593 | groups.num_group = 0; |
2594 | groups.head = NULL; | |
2595 | groups.indexes = hash_new (); | |
b7d07216 L |
2596 | bfd_map_over_sections (stdoutput, build_additional_section_info, |
2597 | &groups); | |
3739860c | 2598 | |
060adf0e AM |
2599 | /* Make the SHT_GROUP sections that describe each section group. We |
2600 | can't set up the section contents here yet, because elf section | |
2601 | indices have yet to be calculated. elf.c:set_group_contents does | |
2602 | the rest of the work. */ | |
db4677b8 | 2603 | for (i = 0; i < groups.num_group; i++) |
060adf0e | 2604 | { |
db4677b8 | 2605 | const char *group_name = elf_group_name (groups.head[i]); |
9758f3fc | 2606 | const char *sec_name; |
060adf0e AM |
2607 | asection *s; |
2608 | flagword flags; | |
9758f3fc | 2609 | struct symbol *sy; |
060adf0e | 2610 | |
060adf0e | 2611 | flags = SEC_READONLY | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_GROUP; |
db4677b8 | 2612 | for (s = groups.head[i]; s != NULL; s = elf_next_in_group (s)) |
68bfbfcc | 2613 | if ((s->flags ^ flags) & SEC_LINK_ONCE) |
d2dab548 AM |
2614 | { |
2615 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
db4677b8 | 2616 | if (s != groups.head[i]) |
d2dab548 AM |
2617 | { |
2618 | as_warn (_("assuming all members of group `%s' are COMDAT"), | |
2619 | group_name); | |
2620 | break; | |
2621 | } | |
2622 | } | |
2623 | ||
709001e9 | 2624 | sec_name = ".group"; |
9758f3fc | 2625 | s = subseg_force_new (sec_name, 0); |
060adf0e | 2626 | if (s == NULL |
fd361982 AM |
2627 | || !bfd_set_section_flags (s, flags) |
2628 | || !bfd_set_section_alignment (s, 2)) | |
060adf0e AM |
2629 | { |
2630 | as_fatal (_("can't create group: %s"), | |
2631 | bfd_errmsg (bfd_get_error ())); | |
2632 | } | |
2f89ff8d | 2633 | elf_section_type (s) = SHT_GROUP; |
060adf0e | 2634 | |
aa1f4858 | 2635 | /* Pass a pointer to the first section in this group. */ |
db4677b8 AM |
2636 | elf_next_in_group (s) = groups.head[i]; |
2637 | elf_sec_group (groups.head[i]) = s; | |
709001e9 MM |
2638 | /* Make sure that the signature symbol for the group has the |
2639 | name of the group. */ | |
2640 | sy = symbol_find_exact (group_name); | |
8d1015a8 | 2641 | if (!sy || !symbol_on_chain (sy, symbol_rootP, symbol_lastP)) |
709001e9 MM |
2642 | { |
2643 | /* Create the symbol now. */ | |
2644 | sy = symbol_new (group_name, now_seg, (valueT) 0, frag_now); | |
69b70cfe RO |
2645 | #ifdef TE_SOLARIS |
2646 | /* Before Solaris 11 build 154, Sun ld rejects local group | |
2647 | signature symbols, so make them weak hidden instead. */ | |
2648 | symbol_get_bfdsym (sy)->flags |= BSF_WEAK; | |
2649 | S_SET_OTHER (sy, STV_HIDDEN); | |
2650 | #else | |
709001e9 | 2651 | symbol_get_obj (sy)->local = 1; |
69b70cfe | 2652 | #endif |
709001e9 MM |
2653 | symbol_table_insert (sy); |
2654 | } | |
2655 | elf_group_id (s) = symbol_get_bfdsym (sy); | |
060adf0e | 2656 | } |
252b5132 RH |
2657 | } |
2658 | ||
709001e9 MM |
2659 | void |
2660 | elf_frob_file (void) | |
2661 | { | |
2662 | bfd_map_over_sections (stdoutput, adjust_stab_sections, NULL); | |
2663 | ||
2664 | #ifdef elf_tc_final_processing | |
2665 | elf_tc_final_processing (); | |
2666 | #endif | |
2667 | } | |
2668 | ||
4a1805b1 | 2669 | /* It removes any unneeded versioned symbols from the symbol table. */ |
339681c0 L |
2670 | |
2671 | void | |
dbe2df79 | 2672 | elf_frob_file_before_adjust (void) |
339681c0 L |
2673 | { |
2674 | if (symbol_rootP) | |
2675 | { | |
2676 | symbolS *symp; | |
2677 | ||
2678 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) | |
00e6e13d | 2679 | if (!S_IS_DEFINED (symp)) |
79082ff0 | 2680 | { |
00e6e13d | 2681 | if (symbol_get_obj (symp)->versioned_name) |
79082ff0 L |
2682 | { |
2683 | char *p; | |
2684 | ||
2685 | /* The @@@ syntax is a special case. If the symbol is | |
2686 | not defined, 2 `@'s will be removed from the | |
2687 | versioned_name. */ | |
2688 | ||
2689 | p = strchr (symbol_get_obj (symp)->versioned_name, | |
2690 | ELF_VER_CHR); | |
85024cd8 | 2691 | if (p != NULL && p[1] == ELF_VER_CHR && p[2] == ELF_VER_CHR) |
79082ff0 L |
2692 | { |
2693 | size_t l = strlen (&p[3]) + 1; | |
dbe2df79 | 2694 | memmove (&p[1], &p[3], l); |
79082ff0 L |
2695 | } |
2696 | if (symbol_used_p (symp) == 0 | |
2697 | && symbol_used_in_reloc_p (symp) == 0) | |
2698 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
2699 | } | |
00e6e13d JJ |
2700 | |
2701 | /* If there was .weak foo, but foo was neither defined nor | |
2702 | used anywhere, remove it. */ | |
2703 | ||
2704 | else if (S_IS_WEAK (symp) | |
2705 | && symbol_used_p (symp) == 0 | |
2706 | && symbol_used_in_reloc_p (symp) == 0) | |
2707 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
79082ff0 | 2708 | } |
339681c0 L |
2709 | } |
2710 | } | |
2711 | ||
252b5132 RH |
2712 | /* It is required that we let write_relocs have the opportunity to |
2713 | optimize away fixups before output has begun, since it is possible | |
2714 | to eliminate all fixups for a section and thus we never should | |
2715 | have generated the relocation section. */ | |
2716 | ||
2717 | void | |
dbe2df79 | 2718 | elf_frob_file_after_relocs (void) |
252b5132 | 2719 | { |
db4677b8 AM |
2720 | unsigned int i; |
2721 | ||
2722 | /* Set SHT_GROUP section size. */ | |
2723 | for (i = 0; i < groups.num_group; i++) | |
2724 | { | |
2725 | asection *s, *head, *group; | |
2726 | bfd_size_type size; | |
2727 | ||
2728 | head = groups.head[i]; | |
2729 | size = 4; | |
2730 | for (s = head; s != NULL; s = elf_next_in_group (s)) | |
2731 | size += (s->flags & SEC_RELOC) != 0 ? 8 : 4; | |
2732 | ||
2733 | group = elf_sec_group (head); | |
2734 | subseg_set (group, 0); | |
fd361982 | 2735 | bfd_set_section_size (group, size); |
db4677b8 AM |
2736 | group->contents = (unsigned char *) frag_more (size); |
2737 | frag_now->fr_fix = frag_now_fix_octets (); | |
2738 | frag_wane (frag_now); | |
2739 | } | |
2740 | ||
2741 | /* Cleanup hash. */ | |
2742 | hash_traverse (groups.indexes, free_section_idx); | |
2743 | hash_die (groups.indexes); | |
2744 | ||
252b5132 RH |
2745 | #ifdef NEED_ECOFF_DEBUG |
2746 | if (ECOFF_DEBUGGING) | |
2747 | /* Generate the ECOFF debugging information. */ | |
2748 | { | |
2749 | const struct ecoff_debug_swap *debug_swap; | |
2750 | struct ecoff_debug_info debug; | |
2751 | char *buf; | |
2752 | asection *sec; | |
2753 | ||
2754 | debug_swap | |
2755 | = get_elf_backend_data (stdoutput)->elf_backend_ecoff_debug_swap; | |
dbe2df79 | 2756 | know (debug_swap != NULL); |
252b5132 RH |
2757 | ecoff_build_debug (&debug.symbolic_header, &buf, debug_swap); |
2758 | ||
2759 | /* Set up the pointers in debug. */ | |
2760 | #define SET(ptr, offset, type) \ | |
2761 | debug.ptr = (type) (buf + debug.symbolic_header.offset) | |
2762 | ||
2763 | SET (line, cbLineOffset, unsigned char *); | |
dbe2df79 AM |
2764 | SET (external_dnr, cbDnOffset, void *); |
2765 | SET (external_pdr, cbPdOffset, void *); | |
2766 | SET (external_sym, cbSymOffset, void *); | |
2767 | SET (external_opt, cbOptOffset, void *); | |
252b5132 RH |
2768 | SET (external_aux, cbAuxOffset, union aux_ext *); |
2769 | SET (ss, cbSsOffset, char *); | |
dbe2df79 AM |
2770 | SET (external_fdr, cbFdOffset, void *); |
2771 | SET (external_rfd, cbRfdOffset, void *); | |
252b5132 RH |
2772 | /* ssext and external_ext are set up just below. */ |
2773 | ||
2774 | #undef SET | |
2775 | ||
2776 | /* Set up the external symbols. */ | |
2777 | debug.ssext = debug.ssext_end = NULL; | |
2778 | debug.external_ext = debug.external_ext_end = NULL; | |
b34976b6 | 2779 | if (! bfd_ecoff_debug_externals (stdoutput, &debug, debug_swap, TRUE, |
252b5132 | 2780 | elf_get_extr, elf_set_index)) |
6ce8b369 | 2781 | as_fatal (_("failed to set up debugging information: %s"), |
252b5132 RH |
2782 | bfd_errmsg (bfd_get_error ())); |
2783 | ||
2784 | sec = bfd_get_section_by_name (stdoutput, ".mdebug"); | |
9c2799c2 | 2785 | gas_assert (sec != NULL); |
252b5132 | 2786 | |
b34976b6 | 2787 | know (!stdoutput->output_has_begun); |
252b5132 RH |
2788 | |
2789 | /* We set the size of the section, call bfd_set_section_contents | |
2790 | to force the ELF backend to allocate a file position, and then | |
2791 | write out the data. FIXME: Is this really the best way to do | |
2792 | this? */ | |
fd361982 AM |
2793 | bfd_set_section_size (sec, bfd_ecoff_debug_size (stdoutput, &debug, |
2794 | debug_swap)); | |
252b5132 | 2795 | |
5f91fe03 | 2796 | /* Pass BUF to bfd_set_section_contents because this will |
13c56984 AM |
2797 | eventually become a call to fwrite, and ISO C prohibits |
2798 | passing a NULL pointer to a stdio function even if the | |
2799 | pointer will not be used. */ | |
dbe2df79 | 2800 | if (! bfd_set_section_contents (stdoutput, sec, buf, 0, 0)) |
6ce8b369 | 2801 | as_fatal (_("can't start writing .mdebug section: %s"), |
252b5132 RH |
2802 | bfd_errmsg (bfd_get_error ())); |
2803 | ||
b34976b6 | 2804 | know (stdoutput->output_has_begun); |
252b5132 RH |
2805 | know (sec->filepos != 0); |
2806 | ||
2807 | if (! bfd_ecoff_write_debug (stdoutput, &debug, debug_swap, | |
2808 | sec->filepos)) | |
6ce8b369 | 2809 | as_fatal (_("could not write .mdebug section: %s"), |
252b5132 RH |
2810 | bfd_errmsg (bfd_get_error ())); |
2811 | } | |
2812 | #endif /* NEED_ECOFF_DEBUG */ | |
2813 | } | |
2814 | ||
bc6b4acc RO |
2815 | static void |
2816 | elf_generate_asm_lineno (void) | |
2817 | { | |
2818 | #ifdef NEED_ECOFF_DEBUG | |
2819 | if (ECOFF_DEBUGGING) | |
2820 | ecoff_generate_asm_lineno (); | |
2821 | #endif | |
2822 | } | |
2823 | ||
2824 | static void | |
bd937d21 L |
2825 | elf_process_stab (segT sec ATTRIBUTE_UNUSED, |
2826 | int what ATTRIBUTE_UNUSED, | |
2827 | const char *string ATTRIBUTE_UNUSED, | |
2828 | int type ATTRIBUTE_UNUSED, | |
2829 | int other ATTRIBUTE_UNUSED, | |
2830 | int desc ATTRIBUTE_UNUSED) | |
bc6b4acc RO |
2831 | { |
2832 | #ifdef NEED_ECOFF_DEBUG | |
2833 | if (ECOFF_DEBUGGING) | |
2834 | ecoff_stab (sec, what, string, type, other, desc); | |
2835 | #endif | |
2836 | } | |
2837 | ||
5110c57e | 2838 | static int |
dbe2df79 | 2839 | elf_separate_stab_sections (void) |
5110c57e HPN |
2840 | { |
2841 | #ifdef NEED_ECOFF_DEBUG | |
2842 | return (!ECOFF_DEBUGGING); | |
2843 | #else | |
2844 | return 1; | |
2845 | #endif | |
2846 | } | |
2847 | ||
2848 | static void | |
dbe2df79 | 2849 | elf_init_stab_section (segT seg) |
5110c57e HPN |
2850 | { |
2851 | #ifdef NEED_ECOFF_DEBUG | |
2852 | if (!ECOFF_DEBUGGING) | |
2853 | #endif | |
2854 | obj_elf_init_stab_section (seg); | |
2855 | } | |
2856 | ||
252b5132 RH |
2857 | const struct format_ops elf_format_ops = |
2858 | { | |
2859 | bfd_target_elf_flavour, | |
4c63da97 AM |
2860 | 0, /* dfl_leading_underscore */ |
2861 | 1, /* emit_section_symbols */ | |
5110c57e HPN |
2862 | elf_begin, |
2863 | elf_file_symbol, | |
252b5132 RH |
2864 | elf_frob_symbol, |
2865 | elf_frob_file, | |
339681c0 | 2866 | elf_frob_file_before_adjust, |
a161fe53 | 2867 | 0, /* obj_frob_file_before_fix */ |
252b5132 RH |
2868 | elf_frob_file_after_relocs, |
2869 | elf_s_get_size, elf_s_set_size, | |
2870 | elf_s_get_align, elf_s_set_align, | |
4c63da97 | 2871 | elf_s_get_other, |
5110c57e | 2872 | elf_s_set_other, |
4c63da97 | 2873 | 0, /* s_get_desc */ |
5110c57e HPN |
2874 | 0, /* s_set_desc */ |
2875 | 0, /* s_get_type */ | |
2876 | 0, /* s_set_type */ | |
252b5132 | 2877 | elf_copy_symbol_attributes, |
bc6b4acc RO |
2878 | elf_generate_asm_lineno, |
2879 | elf_process_stab, | |
5110c57e HPN |
2880 | elf_separate_stab_sections, |
2881 | elf_init_stab_section, | |
252b5132 RH |
2882 | elf_sec_sym_ok_for_reloc, |
2883 | elf_pop_insert, | |
2884 | #ifdef NEED_ECOFF_DEBUG | |
2885 | elf_ecoff_set_ext, | |
2886 | #else | |
4c63da97 | 2887 | 0, /* ecoff_set_ext */ |
252b5132 | 2888 | #endif |
4c63da97 | 2889 | elf_obj_read_begin_hook, |
4cae74aa | 2890 | elf_obj_symbol_new_hook, |
645ea3ea AM |
2891 | 0, |
2892 | elf_adjust_symtab | |
252b5132 | 2893 | }; |