Commit | Line | Data |
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252b5132 | 1 | /* ELF object file format |
4b95cf5c | 2 | Copyright (C) 1992-2014 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" | |
9758f3fc | 26 | #include "struc-symbol.h" |
87ccc1b0 | 27 | #include "dwarf2dbg.h" |
252b5132 RH |
28 | |
29 | #ifndef ECOFF_DEBUGGING | |
30 | #define ECOFF_DEBUGGING 0 | |
31 | #else | |
32 | #define NEED_ECOFF_DEBUG | |
33 | #endif | |
34 | ||
35 | #ifdef NEED_ECOFF_DEBUG | |
36 | #include "ecoff.h" | |
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 | ||
5b93d8bb AM |
51 | #ifdef TC_I370 |
52 | #include "elf/i370.h" | |
53 | #endif | |
54 | ||
3b22753a L |
55 | #ifdef TC_I386 |
56 | #include "elf/x86-64.h" | |
57 | #endif | |
58 | ||
280d71bf DB |
59 | #ifdef TC_MEP |
60 | #include "elf/mep.h" | |
61 | #endif | |
62 | ||
36591ba1 SL |
63 | #ifdef TC_NIOS2 |
64 | #include "elf/nios2.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. */ | |
dbe2df79 AM |
116 | {"vtable_inherit", (void (*) (int)) &obj_elf_vtable_inherit, 0}, |
117 | {"vtable_entry", (void (*) (int)) &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. */ |
dbe2df79 | 127 | { "file", (void (*) (int)) 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. */ | |
163 | { "begin", ecoff_directive_begin, 0 }, | |
164 | { "bend", ecoff_directive_bend, 0 }, | |
165 | { "end", ecoff_directive_end, 0 }, | |
166 | { "ent", ecoff_directive_ent, 0 }, | |
167 | { "fmask", ecoff_directive_fmask, 0 }, | |
168 | { "frame", ecoff_directive_frame, 0 }, | |
169 | { "loc", ecoff_directive_loc, 0 }, | |
170 | { "mask", ecoff_directive_mask, 0 }, | |
171 | ||
172 | /* Other ECOFF directives. */ | |
173 | { "extern", ecoff_directive_extern, 0 }, | |
174 | ||
175 | /* These are used on Irix. I don't know how to implement them. */ | |
176 | { "alias", s_ignore, 0 }, | |
177 | { "bgnb", s_ignore, 0 }, | |
178 | { "endb", s_ignore, 0 }, | |
179 | { "lab", s_ignore, 0 }, | |
180 | { "noalias", s_ignore, 0 }, | |
181 | { "verstamp", s_ignore, 0 }, | |
182 | { "vreg", s_ignore, 0 }, | |
183 | #endif | |
184 | ||
ab9da554 | 185 | {NULL, NULL, 0} /* end sentinel */ |
252b5132 RH |
186 | }; |
187 | ||
188 | #undef NO_RELOC | |
189 | #include "aout/aout64.h" | |
190 | ||
191 | /* This is called when the assembler starts. */ | |
192 | ||
3b22753a L |
193 | asection *elf_com_section_ptr; |
194 | ||
252b5132 | 195 | void |
dbe2df79 | 196 | elf_begin (void) |
252b5132 | 197 | { |
dbe2df79 AM |
198 | asection *s; |
199 | ||
252b5132 | 200 | /* Add symbols for the known sections to the symbol table. */ |
dbe2df79 AM |
201 | s = bfd_get_section_by_name (stdoutput, TEXT_SECTION_NAME); |
202 | symbol_table_insert (section_symbol (s)); | |
203 | s = bfd_get_section_by_name (stdoutput, DATA_SECTION_NAME); | |
204 | symbol_table_insert (section_symbol (s)); | |
205 | s = bfd_get_section_by_name (stdoutput, BSS_SECTION_NAME); | |
206 | symbol_table_insert (section_symbol (s)); | |
3b22753a | 207 | elf_com_section_ptr = bfd_com_section_ptr; |
252b5132 RH |
208 | } |
209 | ||
210 | void | |
dbe2df79 | 211 | elf_pop_insert (void) |
252b5132 RH |
212 | { |
213 | pop_insert (elf_pseudo_table); | |
214 | if (ECOFF_DEBUGGING) | |
215 | pop_insert (ecoff_debug_pseudo_table); | |
216 | } | |
217 | ||
218 | static bfd_vma | |
dbe2df79 | 219 | elf_s_get_size (symbolS *sym) |
252b5132 RH |
220 | { |
221 | return S_GET_SIZE (sym); | |
222 | } | |
223 | ||
224 | static void | |
dbe2df79 | 225 | elf_s_set_size (symbolS *sym, bfd_vma sz) |
252b5132 RH |
226 | { |
227 | S_SET_SIZE (sym, sz); | |
228 | } | |
229 | ||
230 | static bfd_vma | |
dbe2df79 | 231 | elf_s_get_align (symbolS *sym) |
252b5132 RH |
232 | { |
233 | return S_GET_ALIGN (sym); | |
234 | } | |
235 | ||
236 | static void | |
dbe2df79 | 237 | elf_s_set_align (symbolS *sym, bfd_vma align) |
252b5132 RH |
238 | { |
239 | S_SET_ALIGN (sym, align); | |
240 | } | |
241 | ||
4c63da97 | 242 | int |
dbe2df79 | 243 | elf_s_get_other (symbolS *sym) |
4c63da97 AM |
244 | { |
245 | return elf_symbol (symbol_get_bfdsym (sym))->internal_elf_sym.st_other; | |
246 | } | |
247 | ||
5110c57e | 248 | static void |
dbe2df79 | 249 | elf_s_set_other (symbolS *sym, int other) |
5110c57e HPN |
250 | { |
251 | S_SET_OTHER (sym, other); | |
252 | } | |
253 | ||
252b5132 | 254 | static int |
dbe2df79 | 255 | elf_sec_sym_ok_for_reloc (asection *sec) |
252b5132 RH |
256 | { |
257 | return obj_sec_sym_ok_for_reloc (sec); | |
258 | } | |
259 | ||
260 | void | |
c04f5787 | 261 | elf_file_symbol (const char *s, int appfile) |
252b5132 | 262 | { |
c04f5787 AM |
263 | if (!appfile |
264 | || symbol_rootP == NULL | |
265 | || symbol_rootP->bsym == NULL | |
266 | || (symbol_rootP->bsym->flags & BSF_FILE) == 0) | |
267 | { | |
268 | symbolS *sym; | |
efa19bfd | 269 | unsigned int name_length; |
252b5132 | 270 | |
c04f5787 AM |
271 | sym = symbol_new (s, absolute_section, 0, NULL); |
272 | symbol_set_frag (sym, &zero_address_frag); | |
efa19bfd JB |
273 | |
274 | name_length = strlen (s); | |
275 | if (name_length > strlen (S_GET_NAME (sym))) | |
276 | { | |
277 | obstack_grow (¬es, s, name_length + 1); | |
1e9cc1c2 | 278 | S_SET_NAME (sym, (const char *) obstack_finish (¬es)); |
efa19bfd JB |
279 | } |
280 | else | |
281 | strcpy ((char *) S_GET_NAME (sym), s); | |
282 | ||
c04f5787 | 283 | symbol_get_bfdsym (sym)->flags |= BSF_FILE; |
252b5132 | 284 | |
c04f5787 AM |
285 | if (symbol_rootP != sym) |
286 | { | |
287 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); | |
288 | symbol_insert (sym, symbol_rootP, &symbol_rootP, &symbol_lastP); | |
252b5132 | 289 | #ifdef DEBUG |
c04f5787 | 290 | verify_symbol_chain (symbol_rootP, symbol_lastP); |
252b5132 | 291 | #endif |
c04f5787 | 292 | } |
252b5132 RH |
293 | } |
294 | ||
295 | #ifdef NEED_ECOFF_DEBUG | |
f17c130b | 296 | ecoff_new_file (s, appfile); |
252b5132 RH |
297 | #endif |
298 | } | |
299 | ||
e13bab5a AM |
300 | /* Called from read.c:s_comm after we've parsed .comm symbol, size. |
301 | Parse a possible alignment value. */ | |
302 | ||
3b22753a | 303 | symbolS * |
e13bab5a | 304 | elf_common_parse (int ignore ATTRIBUTE_UNUSED, symbolS *symbolP, addressT size) |
252b5132 | 305 | { |
e13bab5a AM |
306 | addressT align = 0; |
307 | int is_local = symbol_get_obj (symbolP)->local; | |
252b5132 | 308 | |
e13bab5a | 309 | if (*input_line_pointer == ',') |
9be1cda6 | 310 | { |
e13bab5a | 311 | char *save = input_line_pointer; |
9be1cda6 | 312 | |
252b5132 RH |
313 | input_line_pointer++; |
314 | SKIP_WHITESPACE (); | |
e13bab5a AM |
315 | |
316 | if (*input_line_pointer == '"') | |
252b5132 | 317 | { |
e13bab5a AM |
318 | /* For sparc. Accept .common symbol, length, "bss" */ |
319 | input_line_pointer++; | |
320 | /* Some use the dot, some don't. */ | |
321 | if (*input_line_pointer == '.') | |
322 | input_line_pointer++; | |
323 | /* Some say data, some say bss. */ | |
324 | if (strncmp (input_line_pointer, "bss\"", 4) == 0) | |
325 | input_line_pointer += 4; | |
326 | else if (strncmp (input_line_pointer, "data\"", 5) == 0) | |
327 | input_line_pointer += 5; | |
328 | else | |
252b5132 | 329 | { |
e13bab5a AM |
330 | char *p = input_line_pointer; |
331 | char c; | |
332 | ||
333 | while (*--p != '"') | |
334 | ; | |
335 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
336 | if (*input_line_pointer++ == '"') | |
337 | break; | |
338 | c = *input_line_pointer; | |
339 | *input_line_pointer = '\0'; | |
340 | as_bad (_("bad .common segment %s"), p); | |
341 | *input_line_pointer = c; | |
342 | ignore_rest_of_line (); | |
343 | return NULL; | |
252b5132 | 344 | } |
e13bab5a AM |
345 | /* ??? Don't ask me why these are always global. */ |
346 | is_local = 0; | |
252b5132 RH |
347 | } |
348 | else | |
349 | { | |
e13bab5a AM |
350 | input_line_pointer = save; |
351 | align = parse_align (is_local); | |
352 | if (align == (addressT) -1) | |
353 | return NULL; | |
252b5132 RH |
354 | } |
355 | } | |
e13bab5a AM |
356 | |
357 | if (is_local) | |
358 | { | |
359 | bss_alloc (symbolP, size, align); | |
360 | S_CLEAR_EXTERNAL (symbolP); | |
361 | } | |
252b5132 RH |
362 | else |
363 | { | |
e13bab5a AM |
364 | S_SET_VALUE (symbolP, size); |
365 | S_SET_ALIGN (symbolP, align); | |
366 | S_SET_EXTERNAL (symbolP); | |
3b22753a | 367 | S_SET_SEGMENT (symbolP, elf_com_section_ptr); |
252b5132 RH |
368 | } |
369 | ||
49309057 | 370 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; |
252b5132 | 371 | |
13ae64f3 | 372 | return symbolP; |
252b5132 RH |
373 | } |
374 | ||
13ae64f3 | 375 | void |
dbe2df79 | 376 | obj_elf_common (int is_common) |
13ae64f3 | 377 | { |
e13bab5a AM |
378 | if (flag_mri && is_common) |
379 | s_mri_common (0); | |
380 | else | |
381 | s_comm_internal (0, elf_common_parse); | |
13ae64f3 JJ |
382 | } |
383 | ||
384 | static void | |
dbe2df79 | 385 | obj_elf_tls_common (int ignore ATTRIBUTE_UNUSED) |
13ae64f3 | 386 | { |
e13bab5a | 387 | symbolS *symbolP = s_comm_internal (0, elf_common_parse); |
13ae64f3 JJ |
388 | |
389 | if (symbolP) | |
390 | symbol_get_bfdsym (symbolP)->flags |= BSF_THREAD_LOCAL; | |
391 | } | |
392 | ||
13c56984 AM |
393 | static void |
394 | obj_elf_lcomm (int ignore ATTRIBUTE_UNUSED) | |
395 | { | |
396 | symbolS *symbolP = s_comm_internal (0, s_lcomm_internal); | |
397 | ||
398 | if (symbolP) | |
399 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; | |
400 | } | |
401 | ||
6e8bd58f NS |
402 | static symbolS * |
403 | get_sym_from_input_line_and_check (void) | |
404 | { | |
405 | char *name; | |
406 | char c; | |
407 | symbolS *sym; | |
408 | ||
409 | name = input_line_pointer; | |
410 | c = get_symbol_end (); | |
411 | sym = symbol_find_or_make (name); | |
412 | *input_line_pointer = c; | |
413 | SKIP_WHITESPACE (); | |
414 | ||
415 | /* There is no symbol name if input_line_pointer has not moved. */ | |
416 | if (name == input_line_pointer) | |
417 | as_bad (_("Missing symbol name in directive")); | |
418 | return sym; | |
419 | } | |
420 | ||
252b5132 | 421 | static void |
dbe2df79 | 422 | obj_elf_local (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 423 | { |
252b5132 RH |
424 | int c; |
425 | symbolS *symbolP; | |
426 | ||
427 | do | |
428 | { | |
01642c12 | 429 | symbolP = get_sym_from_input_line_and_check (); |
6e8bd58f | 430 | c = *input_line_pointer; |
252b5132 | 431 | S_CLEAR_EXTERNAL (symbolP); |
49309057 | 432 | symbol_get_obj (symbolP)->local = 1; |
252b5132 RH |
433 | if (c == ',') |
434 | { | |
435 | input_line_pointer++; | |
436 | SKIP_WHITESPACE (); | |
437 | if (*input_line_pointer == '\n') | |
438 | c = '\n'; | |
439 | } | |
440 | } | |
441 | while (c == ','); | |
442 | demand_empty_rest_of_line (); | |
443 | } | |
444 | ||
445 | static void | |
dbe2df79 | 446 | obj_elf_weak (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 447 | { |
252b5132 RH |
448 | int c; |
449 | symbolS *symbolP; | |
450 | ||
451 | do | |
452 | { | |
01642c12 | 453 | symbolP = get_sym_from_input_line_and_check (); |
6e8bd58f | 454 | c = *input_line_pointer; |
252b5132 | 455 | S_SET_WEAK (symbolP); |
252b5132 RH |
456 | if (c == ',') |
457 | { | |
458 | input_line_pointer++; | |
459 | SKIP_WHITESPACE (); | |
460 | if (*input_line_pointer == '\n') | |
461 | c = '\n'; | |
462 | } | |
463 | } | |
464 | while (c == ','); | |
465 | demand_empty_rest_of_line (); | |
466 | } | |
467 | ||
2e13b764 | 468 | static void |
dbe2df79 | 469 | obj_elf_visibility (int visibility) |
2e13b764 | 470 | { |
2e13b764 NC |
471 | int c; |
472 | symbolS *symbolP; | |
473 | asymbol *bfdsym; | |
474 | elf_symbol_type *elfsym; | |
475 | ||
476 | do | |
477 | { | |
6e8bd58f | 478 | symbolP = get_sym_from_input_line_and_check (); |
fa306131 | 479 | |
2e13b764 NC |
480 | bfdsym = symbol_get_bfdsym (symbolP); |
481 | elfsym = elf_symbol_from (bfd_asymbol_bfd (bfdsym), bfdsym); | |
fa306131 | 482 | |
9c2799c2 | 483 | gas_assert (elfsym); |
fa306131 | 484 | |
20e420c2 RH |
485 | elfsym->internal_elf_sym.st_other &= ~3; |
486 | elfsym->internal_elf_sym.st_other |= visibility; | |
fa306131 | 487 | |
6e8bd58f | 488 | c = *input_line_pointer; |
2e13b764 NC |
489 | if (c == ',') |
490 | { | |
491 | input_line_pointer ++; | |
fa306131 | 492 | |
2e13b764 | 493 | SKIP_WHITESPACE (); |
fa306131 | 494 | |
2e13b764 NC |
495 | if (*input_line_pointer == '\n') |
496 | c = '\n'; | |
497 | } | |
498 | } | |
499 | while (c == ','); | |
fa306131 | 500 | |
2e13b764 NC |
501 | demand_empty_rest_of_line (); |
502 | } | |
503 | ||
252b5132 RH |
504 | static segT previous_section; |
505 | static int previous_subsection; | |
506 | ||
9de8d8f1 RH |
507 | struct section_stack |
508 | { | |
509 | struct section_stack *next; | |
510 | segT seg, prev_seg; | |
511 | int subseg, prev_subseg; | |
512 | }; | |
513 | ||
514 | static struct section_stack *section_stack; | |
515 | ||
fafe6678 | 516 | static bfd_boolean |
86654c12 L |
517 | get_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *inf) |
518 | { | |
1e9cc1c2 | 519 | const char *gname = (const char *) inf; |
86654c12 | 520 | const char *group_name = elf_group_name (sec); |
01fb1836 | 521 | |
fafe6678 | 522 | return (group_name == gname |
86654c12 | 523 | || (group_name != NULL |
fafe6678 L |
524 | && gname != NULL |
525 | && strcmp (group_name, gname) == 0)); | |
86654c12 L |
526 | } |
527 | ||
252b5132 RH |
528 | /* Handle the .section pseudo-op. This code supports two different |
529 | syntaxes. | |
530 | ||
531 | The first is found on Solaris, and looks like | |
532 | .section ".sec1",#alloc,#execinstr,#write | |
533 | Here the names after '#' are the SHF_* flags to turn on for the | |
534 | section. I'm not sure how it determines the SHT_* type (BFD | |
535 | doesn't really give us control over the type, anyhow). | |
536 | ||
537 | The second format is found on UnixWare, and probably most SVR4 | |
538 | machines, and looks like | |
539 | .section .sec1,"a",@progbits | |
540 | The quoted string may contain any combination of a, w, x, and | |
541 | represents the SHF_* flags to turn on for the section. The string | |
542 | beginning with '@' can be progbits or nobits. There should be | |
543 | other possibilities, but I don't know what they are. In any case, | |
544 | BFD doesn't really let us set the section type. */ | |
545 | ||
cca86cc8 | 546 | void |
dbe2df79 AM |
547 | obj_elf_change_section (const char *name, |
548 | int type, | |
01e1a5bc | 549 | bfd_vma attr, |
dbe2df79 AM |
550 | int entsize, |
551 | const char *group_name, | |
552 | int linkonce, | |
553 | int push) | |
252b5132 | 554 | { |
fafe6678 | 555 | asection *old_sec; |
252b5132 | 556 | segT sec; |
742f45cf | 557 | flagword flags; |
551b43fd | 558 | const struct elf_backend_data *bed; |
f61e8019 | 559 | const struct bfd_elf_special_section *ssect; |
252b5132 RH |
560 | |
561 | #ifdef md_flush_pending_output | |
562 | md_flush_pending_output (); | |
563 | #endif | |
564 | ||
9de8d8f1 RH |
565 | /* Switch to the section, creating it if necessary. */ |
566 | if (push) | |
567 | { | |
568 | struct section_stack *elt; | |
1e9cc1c2 | 569 | elt = (struct section_stack *) xmalloc (sizeof (struct section_stack)); |
9de8d8f1 RH |
570 | elt->next = section_stack; |
571 | elt->seg = now_seg; | |
572 | elt->prev_seg = previous_section; | |
573 | elt->subseg = now_subseg; | |
574 | elt->prev_subseg = previous_subsection; | |
575 | section_stack = elt; | |
576 | } | |
577 | previous_section = now_seg; | |
578 | previous_subsection = now_subseg; | |
579 | ||
fafe6678 L |
580 | old_sec = bfd_get_section_by_name_if (stdoutput, name, get_section, |
581 | (void *) group_name); | |
582 | if (old_sec) | |
86654c12 | 583 | { |
fafe6678 | 584 | sec = old_sec; |
86654c12 L |
585 | subseg_set (sec, 0); |
586 | } | |
587 | else | |
588 | sec = subseg_force_new (name, 0); | |
589 | ||
551b43fd AM |
590 | bed = get_elf_backend_data (stdoutput); |
591 | ssect = (*bed->get_sec_type_attr) (stdoutput, sec); | |
9de8d8f1 | 592 | |
f61e8019 | 593 | if (ssect != NULL) |
2f89ff8d | 594 | { |
ea8f8eab L |
595 | bfd_boolean override = FALSE; |
596 | ||
2f89ff8d | 597 | if (type == SHT_NULL) |
f61e8019 AM |
598 | type = ssect->type; |
599 | else if (type != ssect->type) | |
2f89ff8d | 600 | { |
fafe6678 | 601 | if (old_sec == NULL |
23ddb850 | 602 | /* Some older versions of gcc will emit |
7ed1d346 | 603 | |
2f89ff8d | 604 | .section .init_array,"aw",@progbits |
7ed1d346 | 605 | |
2f89ff8d | 606 | for __attribute__ ((section (".init_array"))). |
3b22753a | 607 | "@progbits" is incorrect. Also for x86-64 large bss |
23ddb850 | 608 | sections, some older versions of gcc will emit |
3b22753a L |
609 | |
610 | .section .lbss,"aw",@progbits | |
611 | ||
2f89ff8d | 612 | "@progbits" is incorrect. */ |
3b22753a L |
613 | #ifdef TC_I386 |
614 | && (bed->s->arch_size != 64 | |
615 | || !(ssect->attr & SHF_X86_64_LARGE)) | |
616 | #endif | |
f61e8019 AM |
617 | && ssect->type != SHT_INIT_ARRAY |
618 | && ssect->type != SHT_FINI_ARRAY | |
619 | && ssect->type != SHT_PREINIT_ARRAY) | |
2f89ff8d L |
620 | { |
621 | /* We allow to specify any type for a .note section. */ | |
f61e8019 | 622 | if (ssect->type != SHT_NOTE) |
2f89ff8d L |
623 | as_warn (_("setting incorrect section type for %s"), |
624 | name); | |
625 | } | |
626 | else | |
627 | { | |
628 | as_warn (_("ignoring incorrect section type for %s"), | |
742f45cf | 629 | name); |
f61e8019 | 630 | type = ssect->type; |
2f89ff8d L |
631 | } |
632 | } | |
633 | ||
fafe6678 | 634 | if (old_sec == NULL && (attr & ~ssect->attr) != 0) |
2f89ff8d L |
635 | { |
636 | /* As a GNU extension, we permit a .note section to be | |
f61e8019 | 637 | allocatable. If the linker sees an allocatable .note |
2f89ff8d | 638 | section, it will create a PT_NOTE segment in the output |
92191b29 | 639 | file. We also allow "x" for .note.GNU-stack. */ |
f61e8019 AM |
640 | if (ssect->type == SHT_NOTE |
641 | && (attr == SHF_ALLOC || attr == SHF_EXECINSTR)) | |
642 | ; | |
643 | /* Allow different SHF_MERGE and SHF_STRINGS if we have | |
644 | something like .rodata.str. */ | |
645 | else if (ssect->suffix_length == -2 | |
646 | && name[ssect->prefix_length] == '.' | |
ea8f8eab L |
647 | && (attr |
648 | & ~ssect->attr | |
649 | & ~SHF_MERGE | |
650 | & ~SHF_STRINGS) == 0) | |
f61e8019 | 651 | ; |
ea8f8eab L |
652 | /* .interp, .strtab and .symtab can have SHF_ALLOC. */ |
653 | else if (attr == SHF_ALLOC | |
654 | && (strcmp (name, ".interp") == 0 | |
655 | || strcmp (name, ".strtab") == 0 | |
656 | || strcmp (name, ".symtab") == 0)) | |
657 | override = TRUE; | |
b9f18452 L |
658 | /* .note.GNU-stack can have SHF_EXECINSTR. */ |
659 | else if (attr == SHF_EXECINSTR | |
660 | && strcmp (name, ".note.GNU-stack") == 0) | |
661 | override = TRUE; | |
7f841127 L |
662 | #ifdef TC_ALPHA |
663 | /* A section on Alpha may have SHF_ALPHA_GPREL. */ | |
664 | else if ((attr & ~ssect->attr) == SHF_ALPHA_GPREL) | |
665 | override = TRUE; | |
708e2187 NC |
666 | #endif |
667 | #ifdef TC_RX | |
668 | else if (attr == (SHF_EXECINSTR | SHF_WRITE | SHF_ALLOC) | |
669 | && (ssect->type == SHT_INIT_ARRAY | |
670 | || ssect->type == SHT_FINI_ARRAY | |
671 | || ssect->type == SHT_PREINIT_ARRAY)) | |
672 | /* RX init/fini arrays can and should have the "awx" attributes set. */ | |
673 | ; | |
7f841127 | 674 | #endif |
f61e8019 | 675 | else |
ea8f8eab | 676 | { |
86654c12 L |
677 | if (group_name == NULL) |
678 | as_warn (_("setting incorrect section attributes for %s"), | |
679 | name); | |
ea8f8eab L |
680 | override = TRUE; |
681 | } | |
2f89ff8d | 682 | } |
fafe6678 | 683 | if (!override && old_sec == NULL) |
f61e8019 | 684 | attr |= ssect->attr; |
2f89ff8d | 685 | } |
742f45cf AM |
686 | |
687 | /* Convert ELF type and flags to BFD flags. */ | |
688 | flags = (SEC_RELOC | |
689 | | ((attr & SHF_WRITE) ? 0 : SEC_READONLY) | |
690 | | ((attr & SHF_ALLOC) ? SEC_ALLOC : 0) | |
691 | | (((attr & SHF_ALLOC) && type != SHT_NOBITS) ? SEC_LOAD : 0) | |
f5fa8ca2 JJ |
692 | | ((attr & SHF_EXECINSTR) ? SEC_CODE : 0) |
693 | | ((attr & SHF_MERGE) ? SEC_MERGE : 0) | |
13ae64f3 | 694 | | ((attr & SHF_STRINGS) ? SEC_STRINGS : 0) |
18ae9cc1 | 695 | | ((attr & SHF_EXCLUDE) ? SEC_EXCLUDE: 0) |
13ae64f3 | 696 | | ((attr & SHF_TLS) ? SEC_THREAD_LOCAL : 0)); |
9de8d8f1 | 697 | #ifdef md_elf_section_flags |
742f45cf | 698 | flags = md_elf_section_flags (flags, attr, type); |
9de8d8f1 RH |
699 | #endif |
700 | ||
86654c12 L |
701 | if (linkonce) |
702 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
703 | ||
fafe6678 | 704 | if (old_sec == NULL) |
742f45cf AM |
705 | { |
706 | symbolS *secsym; | |
707 | ||
94be91de JB |
708 | if (type == SHT_NULL) |
709 | type = bfd_elf_get_default_section_type (flags); | |
7a6d0b32 JB |
710 | elf_section_type (sec) = type; |
711 | elf_section_flags (sec) = attr; | |
712 | ||
9de8d8f1 RH |
713 | /* Prevent SEC_HAS_CONTENTS from being inadvertently set. */ |
714 | if (type == SHT_NOBITS) | |
13c56984 | 715 | seg_info (sec)->bss = 1; |
9de8d8f1 RH |
716 | |
717 | bfd_set_section_flags (stdoutput, sec, flags); | |
f5fa8ca2 JJ |
718 | if (flags & SEC_MERGE) |
719 | sec->entsize = entsize; | |
aa1f4858 | 720 | elf_group_name (sec) = group_name; |
9de8d8f1 RH |
721 | |
722 | /* Add a symbol for this section to the symbol table. */ | |
723 | secsym = symbol_find (name); | |
724 | if (secsym != NULL) | |
725 | symbol_set_bfdsym (secsym, sec->symbol); | |
726 | else | |
13c56984 | 727 | symbol_table_insert (section_symbol (sec)); |
9de8d8f1 | 728 | } |
7a6d0b32 | 729 | else |
742f45cf | 730 | { |
7a6d0b32 JB |
731 | if (type != SHT_NULL |
732 | && (unsigned) type != elf_section_type (old_sec)) | |
733 | as_warn (_("ignoring changed section type for %s"), name); | |
734 | ||
735 | if (attr != 0) | |
736 | { | |
737 | /* If section attributes are specified the second time we see a | |
738 | particular section, then check that they are the same as we | |
739 | saw the first time. */ | |
740 | if (((old_sec->flags ^ flags) | |
741 | & (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE | |
742 | | SEC_EXCLUDE | SEC_SORT_ENTRIES | SEC_MERGE | SEC_STRINGS | |
743 | | SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD | |
744 | | SEC_THREAD_LOCAL))) | |
745 | as_warn (_("ignoring changed section attributes for %s"), name); | |
746 | if ((flags & SEC_MERGE) && old_sec->entsize != (unsigned) entsize) | |
747 | as_warn (_("ignoring changed section entity size for %s"), name); | |
748 | } | |
742f45cf | 749 | } |
9de8d8f1 RH |
750 | |
751 | #ifdef md_elf_section_change_hook | |
742f45cf | 752 | md_elf_section_change_hook (); |
9de8d8f1 RH |
753 | #endif |
754 | } | |
755 | ||
01e1a5bc | 756 | static bfd_vma |
f6616a06 | 757 | obj_elf_parse_section_letters (char *str, size_t len, bfd_boolean *is_clone) |
9de8d8f1 | 758 | { |
01e1a5bc | 759 | bfd_vma attr = 0; |
f6616a06 | 760 | *is_clone = FALSE; |
9de8d8f1 RH |
761 | |
762 | while (len > 0) | |
763 | { | |
764 | switch (*str) | |
765 | { | |
766 | case 'a': | |
767 | attr |= SHF_ALLOC; | |
768 | break; | |
18ae9cc1 L |
769 | case 'e': |
770 | attr |= SHF_EXCLUDE; | |
771 | break; | |
9de8d8f1 RH |
772 | case 'w': |
773 | attr |= SHF_WRITE; | |
774 | break; | |
775 | case 'x': | |
776 | attr |= SHF_EXECINSTR; | |
777 | break; | |
9469ddf0 | 778 | case 'M': |
f5fa8ca2 JJ |
779 | attr |= SHF_MERGE; |
780 | break; | |
9469ddf0 | 781 | case 'S': |
f5fa8ca2 JJ |
782 | attr |= SHF_STRINGS; |
783 | break; | |
060adf0e AM |
784 | case 'G': |
785 | attr |= SHF_GROUP; | |
786 | break; | |
13ae64f3 JJ |
787 | case 'T': |
788 | attr |= SHF_TLS; | |
789 | break; | |
01642c12 | 790 | case '?': |
f6616a06 | 791 | *is_clone = TRUE; |
01642c12 | 792 | break; |
34105363 L |
793 | /* Compatibility. */ |
794 | case 'm': | |
795 | if (*(str - 1) == 'a') | |
796 | { | |
797 | attr |= SHF_MERGE; | |
798 | if (len > 1 && str[1] == 's') | |
799 | { | |
800 | attr |= SHF_STRINGS; | |
801 | str++, len--; | |
802 | } | |
803 | break; | |
804 | } | |
9de8d8f1 RH |
805 | default: |
806 | { | |
18ae9cc1 | 807 | char *bad_msg = _("unrecognized .section attribute: want a,e,w,x,M,S,G,T"); |
9de8d8f1 | 808 | #ifdef md_elf_section_letter |
01e1a5bc | 809 | bfd_vma md_attr = md_elf_section_letter (*str, &bad_msg); |
8f3bae45 | 810 | if (md_attr != (bfd_vma) -1) |
9de8d8f1 RH |
811 | attr |= md_attr; |
812 | else | |
813 | #endif | |
711ef82f | 814 | as_fatal ("%s", bad_msg); |
9de8d8f1 RH |
815 | } |
816 | break; | |
817 | } | |
818 | str++, len--; | |
819 | } | |
820 | ||
821 | return attr; | |
822 | } | |
823 | ||
8d28c9d7 | 824 | static int |
44bf2362 | 825 | obj_elf_section_type (char *str, size_t len, bfd_boolean warn) |
9de8d8f1 RH |
826 | { |
827 | if (len == 8 && strncmp (str, "progbits", 8) == 0) | |
828 | return SHT_PROGBITS; | |
829 | if (len == 6 && strncmp (str, "nobits", 6) == 0) | |
830 | return SHT_NOBITS; | |
34f70875 L |
831 | if (len == 4 && strncmp (str, "note", 4) == 0) |
832 | return SHT_NOTE; | |
10b016c2 PB |
833 | if (len == 10 && strncmp (str, "init_array", 10) == 0) |
834 | return SHT_INIT_ARRAY; | |
835 | if (len == 10 && strncmp (str, "fini_array", 10) == 0) | |
836 | return SHT_FINI_ARRAY; | |
837 | if (len == 13 && strncmp (str, "preinit_array", 13) == 0) | |
838 | return SHT_PREINIT_ARRAY; | |
9de8d8f1 RH |
839 | |
840 | #ifdef md_elf_section_type | |
841 | { | |
842 | int md_type = md_elf_section_type (str, len); | |
843 | if (md_type >= 0) | |
844 | return md_type; | |
845 | } | |
846 | #endif | |
847 | ||
44bf2362 NC |
848 | if (warn) |
849 | as_warn (_("unrecognized section type")); | |
850 | return 0; | |
851 | } | |
852 | ||
01e1a5bc | 853 | static bfd_vma |
44bf2362 NC |
854 | obj_elf_section_word (char *str, size_t len, int *type) |
855 | { | |
856 | int ret; | |
857 | ||
858 | if (len == 5 && strncmp (str, "write", 5) == 0) | |
859 | return SHF_WRITE; | |
860 | if (len == 5 && strncmp (str, "alloc", 5) == 0) | |
861 | return SHF_ALLOC; | |
862 | if (len == 9 && strncmp (str, "execinstr", 9) == 0) | |
863 | return SHF_EXECINSTR; | |
18ae9cc1 L |
864 | if (len == 7 && strncmp (str, "exclude", 7) == 0) |
865 | return SHF_EXCLUDE; | |
44bf2362 NC |
866 | if (len == 3 && strncmp (str, "tls", 3) == 0) |
867 | return SHF_TLS; | |
868 | ||
869 | #ifdef md_elf_section_word | |
870 | { | |
01e1a5bc NC |
871 | bfd_vma md_attr = md_elf_section_word (str, len); |
872 | if (md_attr > 0) | |
44bf2362 NC |
873 | return md_attr; |
874 | } | |
875 | #endif | |
876 | ||
877 | ret = obj_elf_section_type (str, len, FALSE); | |
878 | if (ret != 0) | |
879 | *type = ret; | |
880 | else | |
881 | as_warn (_("unrecognized section attribute")); | |
882 | ||
9de8d8f1 RH |
883 | return 0; |
884 | } | |
885 | ||
6ce8b369 | 886 | /* Get name of section. */ |
52b010e4 | 887 | char * |
dbe2df79 | 888 | obj_elf_section_name (void) |
6ce8b369 AM |
889 | { |
890 | char *name; | |
891 | ||
892 | SKIP_WHITESPACE (); | |
893 | if (*input_line_pointer == '"') | |
894 | { | |
895 | int dummy; | |
896 | ||
897 | name = demand_copy_C_string (&dummy); | |
898 | if (name == NULL) | |
899 | { | |
900 | ignore_rest_of_line (); | |
901 | return NULL; | |
902 | } | |
903 | } | |
904 | else | |
905 | { | |
906 | char *end = input_line_pointer; | |
907 | ||
908 | while (0 == strchr ("\n\t,; ", *end)) | |
909 | end++; | |
910 | if (end == input_line_pointer) | |
911 | { | |
c95b35a9 | 912 | as_bad (_("missing name")); |
6ce8b369 AM |
913 | ignore_rest_of_line (); |
914 | return NULL; | |
915 | } | |
916 | ||
1e9cc1c2 | 917 | name = (char *) xmalloc (end - input_line_pointer + 1); |
6ce8b369 AM |
918 | memcpy (name, input_line_pointer, end - input_line_pointer); |
919 | name[end - input_line_pointer] = '\0'; | |
612d7b83 L |
920 | #ifdef tc_canonicalize_section_name |
921 | name = tc_canonicalize_section_name (name); | |
922 | #endif | |
6ce8b369 AM |
923 | input_line_pointer = end; |
924 | } | |
925 | SKIP_WHITESPACE (); | |
926 | return name; | |
927 | } | |
928 | ||
9de8d8f1 | 929 | void |
dbe2df79 | 930 | obj_elf_section (int push) |
9de8d8f1 | 931 | { |
aa1f4858 | 932 | char *name, *group_name, *beg; |
01e1a5bc NC |
933 | int type, dummy; |
934 | bfd_vma attr; | |
f5fa8ca2 | 935 | int entsize; |
d2dab548 | 936 | int linkonce; |
6f932bce | 937 | subsegT new_subsection = -1; |
9de8d8f1 | 938 | |
5b93d8bb | 939 | #ifndef TC_I370 |
252b5132 RH |
940 | if (flag_mri) |
941 | { | |
942 | char mri_type; | |
943 | ||
9de8d8f1 | 944 | #ifdef md_flush_pending_output |
60bcf0fa | 945 | md_flush_pending_output (); |
9de8d8f1 RH |
946 | #endif |
947 | ||
252b5132 RH |
948 | previous_section = now_seg; |
949 | previous_subsection = now_subseg; | |
950 | ||
951 | s_mri_sect (&mri_type); | |
952 | ||
953 | #ifdef md_elf_section_change_hook | |
954 | md_elf_section_change_hook (); | |
955 | #endif | |
956 | ||
957 | return; | |
958 | } | |
5b93d8bb | 959 | #endif /* ! defined (TC_I370) */ |
252b5132 | 960 | |
6ce8b369 AM |
961 | name = obj_elf_section_name (); |
962 | if (name == NULL) | |
963 | return; | |
252b5132 RH |
964 | type = SHT_NULL; |
965 | attr = 0; | |
aa1f4858 | 966 | group_name = NULL; |
f5fa8ca2 | 967 | entsize = 0; |
d2dab548 | 968 | linkonce = 0; |
252b5132 RH |
969 | |
970 | if (*input_line_pointer == ',') | |
971 | { | |
972 | /* Skip the comma. */ | |
973 | ++input_line_pointer; | |
252b5132 RH |
974 | SKIP_WHITESPACE (); |
975 | ||
9cfc3331 | 976 | if (push && ISDIGIT (*input_line_pointer)) |
6f932bce | 977 | { |
9cfc3331 | 978 | /* .pushsection has an optional subsection. */ |
6f932bce | 979 | new_subsection = (subsegT) get_absolute_expression (); |
9cfc3331 L |
980 | |
981 | SKIP_WHITESPACE (); | |
982 | ||
983 | /* Stop if we don't see a comma. */ | |
984 | if (*input_line_pointer != ',') | |
985 | goto done; | |
986 | ||
987 | /* Skip the comma. */ | |
988 | ++input_line_pointer; | |
989 | SKIP_WHITESPACE (); | |
6f932bce | 990 | } |
9cfc3331 L |
991 | |
992 | if (*input_line_pointer == '"') | |
252b5132 | 993 | { |
f6616a06 | 994 | bfd_boolean is_clone; |
01642c12 | 995 | |
9de8d8f1 RH |
996 | beg = demand_copy_C_string (&dummy); |
997 | if (beg == NULL) | |
252b5132 | 998 | { |
9de8d8f1 RH |
999 | ignore_rest_of_line (); |
1000 | return; | |
252b5132 | 1001 | } |
f6616a06 | 1002 | attr |= obj_elf_parse_section_letters (beg, strlen (beg), &is_clone); |
252b5132 RH |
1003 | |
1004 | SKIP_WHITESPACE (); | |
1005 | if (*input_line_pointer == ',') | |
1006 | { | |
9de8d8f1 | 1007 | char c; |
060adf0e AM |
1008 | char *save = input_line_pointer; |
1009 | ||
252b5132 RH |
1010 | ++input_line_pointer; |
1011 | SKIP_WHITESPACE (); | |
9de8d8f1 RH |
1012 | c = *input_line_pointer; |
1013 | if (c == '"') | |
252b5132 | 1014 | { |
9de8d8f1 RH |
1015 | beg = demand_copy_C_string (&dummy); |
1016 | if (beg == NULL) | |
252b5132 | 1017 | { |
9de8d8f1 RH |
1018 | ignore_rest_of_line (); |
1019 | return; | |
252b5132 | 1020 | } |
44bf2362 | 1021 | type = obj_elf_section_type (beg, strlen (beg), TRUE); |
9de8d8f1 RH |
1022 | } |
1023 | else if (c == '@' || c == '%') | |
1024 | { | |
1025 | beg = ++input_line_pointer; | |
1026 | c = get_symbol_end (); | |
1027 | *input_line_pointer = c; | |
44bf2362 | 1028 | type = obj_elf_section_type (beg, input_line_pointer - beg, TRUE); |
252b5132 | 1029 | } |
060adf0e AM |
1030 | else |
1031 | input_line_pointer = save; | |
252b5132 | 1032 | } |
f5fa8ca2 JJ |
1033 | |
1034 | SKIP_WHITESPACE (); | |
6ce8b369 | 1035 | if ((attr & SHF_MERGE) != 0 && *input_line_pointer == ',') |
f5fa8ca2 JJ |
1036 | { |
1037 | ++input_line_pointer; | |
1038 | SKIP_WHITESPACE (); | |
1039 | entsize = get_absolute_expression (); | |
6ce8b369 | 1040 | SKIP_WHITESPACE (); |
f5fa8ca2 JJ |
1041 | if (entsize < 0) |
1042 | { | |
6ce8b369 | 1043 | as_warn (_("invalid merge entity size")); |
f5fa8ca2 JJ |
1044 | attr &= ~SHF_MERGE; |
1045 | entsize = 0; | |
1046 | } | |
1047 | } | |
6ce8b369 AM |
1048 | else if ((attr & SHF_MERGE) != 0) |
1049 | { | |
1050 | as_warn (_("entity size for SHF_MERGE not specified")); | |
1051 | attr &= ~SHF_MERGE; | |
1052 | } | |
060adf0e | 1053 | |
f6616a06 | 1054 | if ((attr & SHF_GROUP) != 0 && is_clone) |
01642c12 RM |
1055 | { |
1056 | as_warn (_("? section flag ignored with G present")); | |
f6616a06 | 1057 | is_clone = FALSE; |
01642c12 | 1058 | } |
060adf0e AM |
1059 | if ((attr & SHF_GROUP) != 0 && *input_line_pointer == ',') |
1060 | { | |
1061 | ++input_line_pointer; | |
aa1f4858 AM |
1062 | group_name = obj_elf_section_name (); |
1063 | if (group_name == NULL) | |
060adf0e | 1064 | attr &= ~SHF_GROUP; |
59365e19 | 1065 | else if (*input_line_pointer == ',') |
d2dab548 | 1066 | { |
59365e19 AM |
1067 | ++input_line_pointer; |
1068 | SKIP_WHITESPACE (); | |
1069 | if (strncmp (input_line_pointer, "comdat", 6) == 0) | |
1070 | { | |
1071 | input_line_pointer += 6; | |
1072 | linkonce = 1; | |
1073 | } | |
d2dab548 AM |
1074 | } |
1075 | else if (strncmp (name, ".gnu.linkonce", 13) == 0) | |
1076 | linkonce = 1; | |
060adf0e AM |
1077 | } |
1078 | else if ((attr & SHF_GROUP) != 0) | |
1079 | { | |
1080 | as_warn (_("group name for SHF_GROUP not specified")); | |
1081 | attr &= ~SHF_GROUP; | |
1082 | } | |
01642c12 | 1083 | |
f6616a06 | 1084 | if (is_clone) |
01642c12 RM |
1085 | { |
1086 | const char *now_group = elf_group_name (now_seg); | |
1087 | if (now_group != NULL) | |
1088 | { | |
1089 | group_name = xstrdup (now_group); | |
1090 | linkonce = (now_seg->flags & SEC_LINK_ONCE) != 0; | |
1091 | } | |
1092 | } | |
252b5132 RH |
1093 | } |
1094 | else | |
1095 | { | |
1096 | do | |
1097 | { | |
9de8d8f1 RH |
1098 | char c; |
1099 | ||
252b5132 RH |
1100 | SKIP_WHITESPACE (); |
1101 | if (*input_line_pointer != '#') | |
1102 | { | |
c95b35a9 | 1103 | as_bad (_("character following name is not '#'")); |
252b5132 RH |
1104 | ignore_rest_of_line (); |
1105 | return; | |
1106 | } | |
9de8d8f1 RH |
1107 | beg = ++input_line_pointer; |
1108 | c = get_symbol_end (); | |
1109 | *input_line_pointer = c; | |
1110 | ||
44bf2362 | 1111 | attr |= obj_elf_section_word (beg, input_line_pointer - beg, & type); |
9de8d8f1 | 1112 | |
252b5132 RH |
1113 | SKIP_WHITESPACE (); |
1114 | } | |
1115 | while (*input_line_pointer++ == ','); | |
1116 | --input_line_pointer; | |
1117 | } | |
1118 | } | |
1119 | ||
9cfc3331 | 1120 | done: |
252b5132 | 1121 | demand_empty_rest_of_line (); |
9de8d8f1 | 1122 | |
d2dab548 | 1123 | obj_elf_change_section (name, type, attr, entsize, group_name, linkonce, push); |
6f932bce NC |
1124 | |
1125 | if (push && new_subsection != -1) | |
1126 | subseg_set (now_seg, new_subsection); | |
252b5132 RH |
1127 | } |
1128 | ||
1129 | /* Change to the .data section. */ | |
1130 | ||
16b93d88 | 1131 | void |
dbe2df79 | 1132 | obj_elf_data (int i) |
252b5132 RH |
1133 | { |
1134 | #ifdef md_flush_pending_output | |
1135 | md_flush_pending_output (); | |
1136 | #endif | |
1137 | ||
1138 | previous_section = now_seg; | |
1139 | previous_subsection = now_subseg; | |
1140 | s_data (i); | |
1141 | ||
1142 | #ifdef md_elf_section_change_hook | |
1143 | md_elf_section_change_hook (); | |
1144 | #endif | |
1145 | } | |
1146 | ||
1147 | /* Change to the .text section. */ | |
1148 | ||
16b93d88 | 1149 | void |
dbe2df79 | 1150 | obj_elf_text (int i) |
252b5132 RH |
1151 | { |
1152 | #ifdef md_flush_pending_output | |
1153 | md_flush_pending_output (); | |
1154 | #endif | |
1155 | ||
1156 | previous_section = now_seg; | |
1157 | previous_subsection = now_subseg; | |
1158 | s_text (i); | |
1159 | ||
1160 | #ifdef md_elf_section_change_hook | |
1161 | md_elf_section_change_hook (); | |
1162 | #endif | |
1163 | } | |
1164 | ||
8fe53b44 JB |
1165 | /* Change to the *ABS* section. */ |
1166 | ||
1167 | void | |
1168 | obj_elf_struct (int i) | |
1169 | { | |
1170 | #ifdef md_flush_pending_output | |
1171 | md_flush_pending_output (); | |
1172 | #endif | |
1173 | ||
1174 | previous_section = now_seg; | |
1175 | previous_subsection = now_subseg; | |
1176 | s_struct (i); | |
1177 | ||
1178 | #ifdef md_elf_section_change_hook | |
1179 | md_elf_section_change_hook (); | |
1180 | #endif | |
1181 | } | |
1182 | ||
252b5132 | 1183 | static void |
dbe2df79 | 1184 | obj_elf_subsection (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1185 | { |
6f932bce | 1186 | int temp; |
252b5132 RH |
1187 | |
1188 | #ifdef md_flush_pending_output | |
1189 | md_flush_pending_output (); | |
1190 | #endif | |
1191 | ||
1192 | previous_section = now_seg; | |
1193 | previous_subsection = now_subseg; | |
1194 | ||
1195 | temp = get_absolute_expression (); | |
1196 | subseg_set (now_seg, (subsegT) temp); | |
1197 | demand_empty_rest_of_line (); | |
1198 | ||
1199 | #ifdef md_elf_section_change_hook | |
1200 | md_elf_section_change_hook (); | |
1201 | #endif | |
1202 | } | |
1203 | ||
1204 | /* This can be called from the processor backends if they change | |
1205 | sections. */ | |
1206 | ||
1207 | void | |
dbe2df79 | 1208 | obj_elf_section_change_hook (void) |
252b5132 RH |
1209 | { |
1210 | previous_section = now_seg; | |
1211 | previous_subsection = now_subseg; | |
1212 | } | |
1213 | ||
1214 | void | |
dbe2df79 | 1215 | obj_elf_previous (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1216 | { |
9de8d8f1 RH |
1217 | segT new_section; |
1218 | int new_subsection; | |
1219 | ||
252b5132 RH |
1220 | if (previous_section == 0) |
1221 | { | |
6ce8b369 | 1222 | as_warn (_(".previous without corresponding .section; ignored")); |
252b5132 RH |
1223 | return; |
1224 | } | |
1225 | ||
1226 | #ifdef md_flush_pending_output | |
1227 | md_flush_pending_output (); | |
1228 | #endif | |
1229 | ||
9de8d8f1 RH |
1230 | new_section = previous_section; |
1231 | new_subsection = previous_subsection; | |
1232 | previous_section = now_seg; | |
1233 | previous_subsection = now_subseg; | |
1234 | subseg_set (new_section, new_subsection); | |
1235 | ||
1236 | #ifdef md_elf_section_change_hook | |
1237 | md_elf_section_change_hook (); | |
1238 | #endif | |
1239 | } | |
1240 | ||
1241 | static void | |
dbe2df79 | 1242 | obj_elf_popsection (int xxx ATTRIBUTE_UNUSED) |
9de8d8f1 RH |
1243 | { |
1244 | struct section_stack *top = section_stack; | |
1245 | ||
1246 | if (top == NULL) | |
1247 | { | |
6ce8b369 | 1248 | as_warn (_(".popsection without corresponding .pushsection; ignored")); |
9de8d8f1 RH |
1249 | return; |
1250 | } | |
1251 | ||
1252 | #ifdef md_flush_pending_output | |
1253 | md_flush_pending_output (); | |
1254 | #endif | |
1255 | ||
1256 | section_stack = top->next; | |
1257 | previous_section = top->prev_seg; | |
1258 | previous_subsection = top->prev_subseg; | |
1259 | subseg_set (top->seg, top->subseg); | |
1260 | free (top); | |
252b5132 RH |
1261 | |
1262 | #ifdef md_elf_section_change_hook | |
1263 | md_elf_section_change_hook (); | |
1264 | #endif | |
1265 | } | |
1266 | ||
1267 | static void | |
dbe2df79 | 1268 | obj_elf_line (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1269 | { |
1270 | /* Assume delimiter is part of expression. BSD4.2 as fails with | |
bf514e21 | 1271 | delightful bug, so we are not being incompatible here. */ |
dbe2df79 | 1272 | new_logical_line (NULL, get_absolute_expression ()); |
252b5132 RH |
1273 | demand_empty_rest_of_line (); |
1274 | } | |
1275 | ||
1276 | /* This handles the .symver pseudo-op, which is used to specify a | |
1277 | symbol version. The syntax is ``.symver NAME,SYMVERNAME''. | |
1278 | SYMVERNAME may contain ELF_VER_CHR ('@') characters. This | |
1279 | pseudo-op causes the assembler to emit a symbol named SYMVERNAME | |
1280 | with the same value as the symbol NAME. */ | |
1281 | ||
1282 | static void | |
dbe2df79 | 1283 | obj_elf_symver (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1284 | { |
1285 | char *name; | |
1286 | char c; | |
468cced8 | 1287 | char old_lexat; |
252b5132 RH |
1288 | symbolS *sym; |
1289 | ||
6e8bd58f | 1290 | sym = get_sym_from_input_line_and_check (); |
252b5132 | 1291 | |
252b5132 RH |
1292 | if (*input_line_pointer != ',') |
1293 | { | |
1294 | as_bad (_("expected comma after name in .symver")); | |
1295 | ignore_rest_of_line (); | |
1296 | return; | |
1297 | } | |
1298 | ||
1299 | ++input_line_pointer; | |
eba874d8 | 1300 | SKIP_WHITESPACE (); |
252b5132 | 1301 | name = input_line_pointer; |
468cced8 AM |
1302 | |
1303 | /* Temporarily include '@' in symbol names. */ | |
1304 | old_lexat = lex_type[(unsigned char) '@']; | |
1305 | lex_type[(unsigned char) '@'] |= LEX_NAME; | |
1306 | c = get_symbol_end (); | |
1307 | lex_type[(unsigned char) '@'] = old_lexat; | |
252b5132 | 1308 | |
339681c0 L |
1309 | if (symbol_get_obj (sym)->versioned_name == NULL) |
1310 | { | |
1311 | symbol_get_obj (sym)->versioned_name = xstrdup (name); | |
252b5132 | 1312 | |
339681c0 | 1313 | *input_line_pointer = c; |
252b5132 | 1314 | |
6f620856 L |
1315 | if (strchr (symbol_get_obj (sym)->versioned_name, |
1316 | ELF_VER_CHR) == NULL) | |
339681c0 L |
1317 | { |
1318 | as_bad (_("missing version name in `%s' for symbol `%s'"), | |
1319 | symbol_get_obj (sym)->versioned_name, | |
1320 | S_GET_NAME (sym)); | |
1321 | ignore_rest_of_line (); | |
1322 | return; | |
1323 | } | |
1324 | } | |
1325 | else | |
252b5132 | 1326 | { |
339681c0 L |
1327 | if (strcmp (symbol_get_obj (sym)->versioned_name, name)) |
1328 | { | |
1329 | as_bad (_("multiple versions [`%s'|`%s'] for symbol `%s'"), | |
1330 | name, symbol_get_obj (sym)->versioned_name, | |
1331 | S_GET_NAME (sym)); | |
1332 | ignore_rest_of_line (); | |
1333 | return; | |
1334 | } | |
1335 | ||
1336 | *input_line_pointer = c; | |
252b5132 RH |
1337 | } |
1338 | ||
1339 | demand_empty_rest_of_line (); | |
1340 | } | |
1341 | ||
1342 | /* This handles the .vtable_inherit pseudo-op, which is used to indicate | |
1343 | to the linker the hierarchy in which a particular table resides. The | |
1344 | syntax is ".vtable_inherit CHILDNAME, PARENTNAME". */ | |
1345 | ||
904a31bf | 1346 | struct fix * |
dbe2df79 | 1347 | obj_elf_vtable_inherit (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1348 | { |
1349 | char *cname, *pname; | |
1350 | symbolS *csym, *psym; | |
1351 | char c, bad = 0; | |
1352 | ||
1353 | if (*input_line_pointer == '#') | |
1354 | ++input_line_pointer; | |
1355 | ||
1356 | cname = input_line_pointer; | |
1357 | c = get_symbol_end (); | |
1358 | csym = symbol_find (cname); | |
1359 | ||
1360 | /* GCFIXME: should check that we don't have two .vtable_inherits for | |
1361 | the same child symbol. Also, we can currently only do this if the | |
1362 | child symbol is already exists and is placed in a fragment. */ | |
1363 | ||
49309057 | 1364 | if (csym == NULL || symbol_get_frag (csym) == NULL) |
252b5132 | 1365 | { |
bd3ba5d1 | 1366 | as_bad (_("expected `%s' to have already been set for .vtable_inherit"), |
252b5132 RH |
1367 | cname); |
1368 | bad = 1; | |
1369 | } | |
1370 | ||
1371 | *input_line_pointer = c; | |
1372 | ||
1373 | SKIP_WHITESPACE (); | |
1374 | if (*input_line_pointer != ',') | |
1375 | { | |
bd3ba5d1 | 1376 | as_bad (_("expected comma after name in .vtable_inherit")); |
252b5132 | 1377 | ignore_rest_of_line (); |
904a31bf | 1378 | return NULL; |
252b5132 RH |
1379 | } |
1380 | ||
1381 | ++input_line_pointer; | |
1382 | SKIP_WHITESPACE (); | |
1383 | ||
1384 | if (*input_line_pointer == '#') | |
1385 | ++input_line_pointer; | |
1386 | ||
1387 | if (input_line_pointer[0] == '0' | |
1388 | && (input_line_pointer[1] == '\0' | |
3882b010 | 1389 | || ISSPACE (input_line_pointer[1]))) |
252b5132 RH |
1390 | { |
1391 | psym = section_symbol (absolute_section); | |
1392 | ++input_line_pointer; | |
1393 | } | |
1394 | else | |
1395 | { | |
1396 | pname = input_line_pointer; | |
1397 | c = get_symbol_end (); | |
1398 | psym = symbol_find_or_make (pname); | |
1399 | *input_line_pointer = c; | |
1400 | } | |
1401 | ||
1402 | demand_empty_rest_of_line (); | |
1403 | ||
1404 | if (bad) | |
904a31bf | 1405 | return NULL; |
252b5132 | 1406 | |
9c2799c2 | 1407 | gas_assert (symbol_get_value_expression (csym)->X_op == O_constant); |
904a31bf AM |
1408 | return fix_new (symbol_get_frag (csym), |
1409 | symbol_get_value_expression (csym)->X_add_number, | |
1410 | 0, psym, 0, 0, BFD_RELOC_VTABLE_INHERIT); | |
252b5132 | 1411 | } |
fa306131 | 1412 | |
252b5132 RH |
1413 | /* This handles the .vtable_entry pseudo-op, which is used to indicate |
1414 | to the linker that a vtable slot was used. The syntax is | |
1415 | ".vtable_entry tablename, offset". */ | |
1416 | ||
904a31bf | 1417 | struct fix * |
dbe2df79 | 1418 | obj_elf_vtable_entry (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1419 | { |
252b5132 RH |
1420 | symbolS *sym; |
1421 | offsetT offset; | |
252b5132 RH |
1422 | |
1423 | if (*input_line_pointer == '#') | |
1424 | ++input_line_pointer; | |
1425 | ||
6e8bd58f | 1426 | sym = get_sym_from_input_line_and_check (); |
252b5132 RH |
1427 | if (*input_line_pointer != ',') |
1428 | { | |
bd3ba5d1 | 1429 | as_bad (_("expected comma after name in .vtable_entry")); |
252b5132 | 1430 | ignore_rest_of_line (); |
904a31bf | 1431 | return NULL; |
252b5132 RH |
1432 | } |
1433 | ||
1434 | ++input_line_pointer; | |
1435 | if (*input_line_pointer == '#') | |
1436 | ++input_line_pointer; | |
1437 | ||
1438 | offset = get_absolute_expression (); | |
1439 | ||
252b5132 | 1440 | demand_empty_rest_of_line (); |
904a31bf AM |
1441 | |
1442 | return fix_new (frag_now, frag_now_fix (), 0, sym, offset, 0, | |
1443 | BFD_RELOC_VTABLE_ENTRY); | |
252b5132 RH |
1444 | } |
1445 | ||
0420f52b MR |
1446 | #define skip_whitespace(str) do { if (*(str) == ' ') ++(str); } while (0) |
1447 | ||
1448 | static inline int | |
1449 | skip_past_char (char ** str, char c) | |
1450 | { | |
1451 | if (**str == c) | |
1452 | { | |
1453 | (*str)++; | |
1454 | return 0; | |
1455 | } | |
1456 | else | |
1457 | return -1; | |
1458 | } | |
1459 | #define skip_past_comma(str) skip_past_char (str, ',') | |
1460 | ||
9440a904 RS |
1461 | /* A list of attributes that have been explicitly set by the assembly code. |
1462 | VENDOR is the vendor id, BASE is the tag shifted right by the number | |
1463 | of bits in MASK, and bit N of MASK is set if tag BASE+N has been set. */ | |
1464 | struct recorded_attribute_info { | |
1465 | struct recorded_attribute_info *next; | |
1466 | int vendor; | |
1467 | unsigned int base; | |
1468 | unsigned long mask; | |
1469 | }; | |
1470 | static struct recorded_attribute_info *recorded_attributes; | |
1471 | ||
1472 | /* Record that we have seen an explicit specification of attribute TAG | |
1473 | for vendor VENDOR. */ | |
1474 | ||
1475 | static void | |
1476 | record_attribute (int vendor, unsigned int tag) | |
1477 | { | |
1478 | unsigned int base; | |
1479 | unsigned long mask; | |
1480 | struct recorded_attribute_info *rai; | |
1481 | ||
1482 | base = tag / (8 * sizeof (rai->mask)); | |
1483 | mask = 1UL << (tag % (8 * sizeof (rai->mask))); | |
1484 | for (rai = recorded_attributes; rai; rai = rai->next) | |
1485 | if (rai->vendor == vendor && rai->base == base) | |
1486 | { | |
1487 | rai->mask |= mask; | |
1488 | return; | |
1489 | } | |
1490 | ||
1491 | rai = XNEW (struct recorded_attribute_info); | |
1492 | rai->next = recorded_attributes; | |
1493 | rai->vendor = vendor; | |
1494 | rai->base = base; | |
1495 | rai->mask = mask; | |
1496 | recorded_attributes = rai; | |
1497 | } | |
1498 | ||
1499 | /* Return true if we have seen an explicit specification of attribute TAG | |
1500 | for vendor VENDOR. */ | |
1501 | ||
1502 | bfd_boolean | |
1503 | obj_elf_seen_attribute (int vendor, unsigned int tag) | |
1504 | { | |
1505 | unsigned int base; | |
1506 | unsigned long mask; | |
1507 | struct recorded_attribute_info *rai; | |
1508 | ||
1509 | base = tag / (8 * sizeof (rai->mask)); | |
1510 | mask = 1UL << (tag % (8 * sizeof (rai->mask))); | |
1511 | for (rai = recorded_attributes; rai; rai = rai->next) | |
1512 | if (rai->vendor == vendor && rai->base == base) | |
1513 | return (rai->mask & mask) != 0; | |
1514 | return FALSE; | |
1515 | } | |
1516 | ||
0420f52b MR |
1517 | /* Parse an attribute directive for VENDOR. |
1518 | Returns the attribute number read, or zero on error. */ | |
1519 | ||
1520 | int | |
1521 | obj_elf_vendor_attribute (int vendor) | |
1522 | { | |
1523 | expressionS exp; | |
1524 | int type; | |
1525 | int tag; | |
1526 | unsigned int i = 0; | |
1527 | char *s = NULL; | |
1528 | ||
1529 | /* Read the first number or name. */ | |
1530 | skip_whitespace (input_line_pointer); | |
1531 | s = input_line_pointer; | |
1532 | if (ISDIGIT (*input_line_pointer)) | |
1533 | { | |
1534 | expression (& exp); | |
1535 | if (exp.X_op != O_constant) | |
1536 | goto bad; | |
1537 | tag = exp.X_add_number; | |
1538 | } | |
1539 | else | |
1540 | { | |
1541 | char *name; | |
1542 | ||
1543 | /* A name may contain '_', but no other punctuation. */ | |
1544 | for (; ISALNUM (*input_line_pointer) || *input_line_pointer == '_'; | |
1545 | ++input_line_pointer) | |
1546 | i++; | |
1547 | if (i == 0) | |
1548 | goto bad; | |
1549 | ||
1550 | name = (char *) alloca (i + 1); | |
1551 | memcpy (name, s, i); | |
1552 | name[i] = '\0'; | |
1553 | ||
1554 | #ifndef CONVERT_SYMBOLIC_ATTRIBUTE | |
1555 | #define CONVERT_SYMBOLIC_ATTRIBUTE(a) -1 | |
1556 | #endif | |
1557 | ||
1558 | tag = CONVERT_SYMBOLIC_ATTRIBUTE (name); | |
1559 | if (tag == -1) | |
1560 | { | |
1561 | as_bad (_("Attribute name not recognised: %s"), name); | |
1562 | ignore_rest_of_line (); | |
1563 | return 0; | |
1564 | } | |
1565 | } | |
1566 | ||
1567 | type = _bfd_elf_obj_attrs_arg_type (stdoutput, vendor, tag); | |
1568 | ||
1569 | if (skip_past_comma (&input_line_pointer) == -1) | |
1570 | goto bad; | |
1571 | if (type & 1) | |
1572 | { | |
1573 | expression (& exp); | |
1574 | if (exp.X_op != O_constant) | |
1575 | { | |
1576 | as_bad (_("expected numeric constant")); | |
1577 | ignore_rest_of_line (); | |
1578 | return 0; | |
1579 | } | |
1580 | i = exp.X_add_number; | |
1581 | } | |
1582 | if ((type & 3) == 3 | |
1583 | && skip_past_comma (&input_line_pointer) == -1) | |
1584 | { | |
1585 | as_bad (_("expected comma")); | |
1586 | ignore_rest_of_line (); | |
1587 | return 0; | |
1588 | } | |
1589 | if (type & 2) | |
1590 | { | |
1591 | int len; | |
1592 | ||
1593 | skip_whitespace (input_line_pointer); | |
1594 | if (*input_line_pointer != '"') | |
1595 | goto bad_string; | |
1596 | s = demand_copy_C_string (&len); | |
1597 | } | |
1598 | ||
9440a904 | 1599 | record_attribute (vendor, tag); |
0420f52b MR |
1600 | switch (type & 3) |
1601 | { | |
1602 | case 3: | |
1603 | bfd_elf_add_obj_attr_int_string (stdoutput, vendor, tag, i, s); | |
1604 | break; | |
1605 | case 2: | |
1606 | bfd_elf_add_obj_attr_string (stdoutput, vendor, tag, s); | |
1607 | break; | |
1608 | case 1: | |
1609 | bfd_elf_add_obj_attr_int (stdoutput, vendor, tag, i); | |
1610 | break; | |
1611 | default: | |
1612 | abort (); | |
1613 | } | |
1614 | ||
1615 | demand_empty_rest_of_line (); | |
1616 | return tag; | |
1617 | bad_string: | |
1618 | as_bad (_("bad string constant")); | |
1619 | ignore_rest_of_line (); | |
1620 | return 0; | |
1621 | bad: | |
1622 | as_bad (_("expected <tag> , <value>")); | |
1623 | ignore_rest_of_line (); | |
1624 | return 0; | |
1625 | } | |
1626 | ||
1627 | /* Parse a .gnu_attribute directive. */ | |
1628 | ||
1629 | static void | |
1630 | obj_elf_gnu_attribute (int ignored ATTRIBUTE_UNUSED) | |
1631 | { | |
1632 | obj_elf_vendor_attribute (OBJ_ATTR_GNU); | |
1633 | } | |
1634 | ||
252b5132 | 1635 | void |
dbe2df79 | 1636 | elf_obj_read_begin_hook (void) |
252b5132 RH |
1637 | { |
1638 | #ifdef NEED_ECOFF_DEBUG | |
1639 | if (ECOFF_DEBUGGING) | |
1640 | ecoff_read_begin_hook (); | |
1641 | #endif | |
1642 | } | |
1643 | ||
1644 | void | |
dbe2df79 | 1645 | elf_obj_symbol_new_hook (symbolS *symbolP) |
252b5132 | 1646 | { |
49309057 ILT |
1647 | struct elf_obj_sy *sy_obj; |
1648 | ||
1649 | sy_obj = symbol_get_obj (symbolP); | |
1650 | sy_obj->size = NULL; | |
1651 | sy_obj->versioned_name = NULL; | |
252b5132 RH |
1652 | |
1653 | #ifdef NEED_ECOFF_DEBUG | |
1654 | if (ECOFF_DEBUGGING) | |
1655 | ecoff_symbol_new_hook (symbolP); | |
1656 | #endif | |
1657 | } | |
1658 | ||
8fd3e36b AM |
1659 | /* When setting one symbol equal to another, by default we probably |
1660 | want them to have the same "size", whatever it means in the current | |
1661 | context. */ | |
1662 | ||
1663 | void | |
dbe2df79 | 1664 | elf_copy_symbol_attributes (symbolS *dest, symbolS *src) |
8fd3e36b | 1665 | { |
060adf0e AM |
1666 | struct elf_obj_sy *srcelf = symbol_get_obj (src); |
1667 | struct elf_obj_sy *destelf = symbol_get_obj (dest); | |
1668 | if (srcelf->size) | |
1669 | { | |
1670 | if (destelf->size == NULL) | |
1e9cc1c2 | 1671 | destelf->size = (expressionS *) xmalloc (sizeof (expressionS)); |
060adf0e AM |
1672 | *destelf->size = *srcelf->size; |
1673 | } | |
1674 | else | |
1675 | { | |
1676 | if (destelf->size != NULL) | |
1677 | free (destelf->size); | |
1678 | destelf->size = NULL; | |
1679 | } | |
1680 | S_SET_SIZE (dest, S_GET_SIZE (src)); | |
26eb4093 JJ |
1681 | /* Don't copy visibility. */ |
1682 | S_SET_OTHER (dest, (ELF_ST_VISIBILITY (S_GET_OTHER (dest)) | |
1683 | | (S_GET_OTHER (src) & ~ELF_ST_VISIBILITY (-1)))); | |
8fd3e36b AM |
1684 | } |
1685 | ||
252b5132 | 1686 | void |
dbe2df79 | 1687 | obj_elf_version (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1688 | { |
1689 | char *name; | |
1690 | unsigned int c; | |
252b5132 RH |
1691 | char *p; |
1692 | asection *seg = now_seg; | |
1693 | subsegT subseg = now_subseg; | |
1694 | Elf_Internal_Note i_note; | |
1695 | Elf_External_Note e_note; | |
dbe2df79 | 1696 | asection *note_secp = NULL; |
252b5132 RH |
1697 | |
1698 | SKIP_WHITESPACE (); | |
1699 | if (*input_line_pointer == '\"') | |
1700 | { | |
6afdfa61 NC |
1701 | unsigned int len; |
1702 | ||
bf514e21 | 1703 | ++input_line_pointer; /* -> 1st char of string. */ |
252b5132 RH |
1704 | name = input_line_pointer; |
1705 | ||
1706 | while (is_a_char (c = next_char_of_string ())) | |
1707 | ; | |
1708 | c = *input_line_pointer; | |
1709 | *input_line_pointer = '\0'; | |
1710 | *(input_line_pointer - 1) = '\0'; | |
1711 | *input_line_pointer = c; | |
1712 | ||
6afdfa61 | 1713 | /* Create the .note section. */ |
252b5132 RH |
1714 | note_secp = subseg_new (".note", 0); |
1715 | bfd_set_section_flags (stdoutput, | |
1716 | note_secp, | |
1717 | SEC_HAS_CONTENTS | SEC_READONLY); | |
1718 | ||
6afdfa61 NC |
1719 | /* Process the version string. */ |
1720 | len = strlen (name) + 1; | |
252b5132 | 1721 | |
6afdfa61 NC |
1722 | /* PR 3456: Although the name field is padded out to an 4-byte |
1723 | boundary, the namesz field should not be adjusted. */ | |
1724 | i_note.namesz = len; | |
1725 | i_note.descsz = 0; /* No description. */ | |
252b5132 RH |
1726 | i_note.type = NT_VERSION; |
1727 | p = frag_more (sizeof (e_note.namesz)); | |
dbe2df79 | 1728 | md_number_to_chars (p, i_note.namesz, sizeof (e_note.namesz)); |
252b5132 | 1729 | p = frag_more (sizeof (e_note.descsz)); |
dbe2df79 | 1730 | md_number_to_chars (p, i_note.descsz, sizeof (e_note.descsz)); |
252b5132 | 1731 | p = frag_more (sizeof (e_note.type)); |
dbe2df79 | 1732 | md_number_to_chars (p, i_note.type, sizeof (e_note.type)); |
6afdfa61 | 1733 | p = frag_more (len); |
5ab504f9 | 1734 | memcpy (p, name, len); |
252b5132 | 1735 | |
252b5132 RH |
1736 | frag_align (2, 0, 0); |
1737 | ||
1738 | subseg_set (seg, subseg); | |
1739 | } | |
1740 | else | |
6afdfa61 NC |
1741 | as_bad (_("expected quoted string")); |
1742 | ||
252b5132 RH |
1743 | demand_empty_rest_of_line (); |
1744 | } | |
1745 | ||
1746 | static void | |
dbe2df79 | 1747 | obj_elf_size (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1748 | { |
1749 | char *name = input_line_pointer; | |
1750 | char c = get_symbol_end (); | |
1751 | char *p; | |
1752 | expressionS exp; | |
1753 | symbolS *sym; | |
1754 | ||
1755 | p = input_line_pointer; | |
1756 | *p = c; | |
1757 | SKIP_WHITESPACE (); | |
1758 | if (*input_line_pointer != ',') | |
1759 | { | |
1760 | *p = 0; | |
1761 | as_bad (_("expected comma after name `%s' in .size directive"), name); | |
1762 | *p = c; | |
1763 | ignore_rest_of_line (); | |
1764 | return; | |
1765 | } | |
1766 | input_line_pointer++; | |
1767 | expression (&exp); | |
1768 | if (exp.X_op == O_absent) | |
1769 | { | |
1770 | as_bad (_("missing expression in .size directive")); | |
1771 | exp.X_op = O_constant; | |
1772 | exp.X_add_number = 0; | |
1773 | } | |
1774 | *p = 0; | |
1775 | sym = symbol_find_or_make (name); | |
1776 | *p = c; | |
1777 | if (exp.X_op == O_constant) | |
c538998c JJ |
1778 | { |
1779 | S_SET_SIZE (sym, exp.X_add_number); | |
1780 | if (symbol_get_obj (sym)->size) | |
1781 | { | |
1782 | xfree (symbol_get_obj (sym)->size); | |
1783 | symbol_get_obj (sym)->size = NULL; | |
1784 | } | |
1785 | } | |
252b5132 RH |
1786 | else |
1787 | { | |
1e9cc1c2 NC |
1788 | symbol_get_obj (sym)->size = |
1789 | (expressionS *) xmalloc (sizeof (expressionS)); | |
49309057 | 1790 | *symbol_get_obj (sym)->size = exp; |
252b5132 RH |
1791 | } |
1792 | demand_empty_rest_of_line (); | |
1793 | } | |
1794 | ||
1795 | /* Handle the ELF .type pseudo-op. This sets the type of a symbol. | |
44bf2362 | 1796 | There are six syntaxes: |
fa306131 | 1797 | |
252b5132 RH |
1798 | The first (used on Solaris) is |
1799 | .type SYM,#function | |
1800 | The second (used on UnixWare) is | |
1801 | .type SYM,@function | |
1802 | The third (reportedly to be used on Irix 6.0) is | |
1803 | .type SYM STT_FUNC | |
1804 | The fourth (used on NetBSD/Arm and Linux/ARM) is | |
1805 | .type SYM,%function | |
aa8c34c3 JE |
1806 | The fifth (used on SVR4/860) is |
1807 | .type SYM,"function" | |
44bf2362 NC |
1808 | The sixth (emitted by recent SunPRO under Solaris) is |
1809 | .type SYM,[0-9] | |
1810 | where the integer is the STT_* value. | |
252b5132 RH |
1811 | */ |
1812 | ||
44bf2362 NC |
1813 | static char * |
1814 | obj_elf_type_name (char *cp) | |
1815 | { | |
1816 | char *p; | |
1817 | ||
1818 | p = input_line_pointer; | |
1819 | if (*input_line_pointer >= '0' | |
1820 | && *input_line_pointer <= '9') | |
1821 | { | |
1822 | while (*input_line_pointer >= '0' | |
1823 | && *input_line_pointer <= '9') | |
1824 | ++input_line_pointer; | |
1825 | *cp = *input_line_pointer; | |
1826 | *input_line_pointer = '\0'; | |
1827 | } | |
1828 | else | |
1829 | *cp = get_symbol_end (); | |
1830 | ||
1831 | return p; | |
1832 | } | |
1833 | ||
252b5132 | 1834 | static void |
dbe2df79 | 1835 | obj_elf_type (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1836 | { |
252b5132 RH |
1837 | char c; |
1838 | int type; | |
1e9cc1c2 | 1839 | const char *type_name; |
252b5132 | 1840 | symbolS *sym; |
904a31bf | 1841 | elf_symbol_type *elfsym; |
252b5132 | 1842 | |
6e8bd58f NS |
1843 | sym = get_sym_from_input_line_and_check (); |
1844 | c = *input_line_pointer; | |
904a31bf | 1845 | elfsym = (elf_symbol_type *) symbol_get_bfdsym (sym); |
252b5132 | 1846 | |
252b5132 RH |
1847 | if (*input_line_pointer == ',') |
1848 | ++input_line_pointer; | |
1849 | ||
1850 | SKIP_WHITESPACE (); | |
1851 | if ( *input_line_pointer == '#' | |
1852 | || *input_line_pointer == '@' | |
aa8c34c3 | 1853 | || *input_line_pointer == '"' |
252b5132 RH |
1854 | || *input_line_pointer == '%') |
1855 | ++input_line_pointer; | |
1856 | ||
1e9cc1c2 | 1857 | type_name = obj_elf_type_name (& c); |
252b5132 RH |
1858 | |
1859 | type = 0; | |
1e9cc1c2 NC |
1860 | if (strcmp (type_name, "function") == 0 |
1861 | || strcmp (type_name, "2") == 0 | |
1862 | || strcmp (type_name, "STT_FUNC") == 0) | |
252b5132 | 1863 | type = BSF_FUNCTION; |
1e9cc1c2 NC |
1864 | else if (strcmp (type_name, "object") == 0 |
1865 | || strcmp (type_name, "1") == 0 | |
1866 | || strcmp (type_name, "STT_OBJECT") == 0) | |
252b5132 | 1867 | type = BSF_OBJECT; |
1e9cc1c2 NC |
1868 | else if (strcmp (type_name, "tls_object") == 0 |
1869 | || strcmp (type_name, "6") == 0 | |
1870 | || strcmp (type_name, "STT_TLS") == 0) | |
b9734f35 | 1871 | type = BSF_OBJECT | BSF_THREAD_LOCAL; |
1e9cc1c2 NC |
1872 | else if (strcmp (type_name, "notype") == 0 |
1873 | || strcmp (type_name, "0") == 0 | |
1874 | || strcmp (type_name, "STT_NOTYPE") == 0) | |
e7b9a8c1 | 1875 | ; |
1e9cc1c2 NC |
1876 | else if (strcmp (type_name, "common") == 0 |
1877 | || strcmp (type_name, "5") == 0 | |
1878 | || strcmp (type_name, "STT_COMMON") == 0) | |
504b7d20 NC |
1879 | { |
1880 | type = BSF_OBJECT; | |
1881 | ||
1882 | if (! S_IS_COMMON (sym)) | |
1883 | { | |
1884 | if (S_IS_VOLATILE (sym)) | |
1885 | { | |
1886 | sym = symbol_clone (sym, 1); | |
1887 | S_SET_SEGMENT (sym, bfd_com_section_ptr); | |
1888 | S_SET_VALUE (sym, 0); | |
1889 | S_SET_EXTERNAL (sym); | |
1890 | symbol_set_frag (sym, &zero_address_frag); | |
1891 | S_CLEAR_VOLATILE (sym); | |
1892 | } | |
1893 | else if (S_IS_DEFINED (sym) || symbol_equated_p (sym)) | |
1894 | as_bad (_("symbol '%s' is already defined"), S_GET_NAME (sym)); | |
1895 | else | |
1896 | { | |
1897 | /* FIXME: Is it safe to just change the section ? */ | |
1898 | S_SET_SEGMENT (sym, bfd_com_section_ptr); | |
1899 | S_SET_VALUE (sym, 0); | |
1900 | S_SET_EXTERNAL (sym); | |
1901 | } | |
1902 | } | |
1903 | } | |
1e9cc1c2 NC |
1904 | else if (strcmp (type_name, "gnu_indirect_function") == 0 |
1905 | || strcmp (type_name, "10") == 0 | |
1906 | || strcmp (type_name, "STT_GNU_IFUNC") == 0) | |
d8045f23 NC |
1907 | { |
1908 | const struct elf_backend_data *bed; | |
1909 | ||
1910 | bed = get_elf_backend_data (stdoutput); | |
9c55345c | 1911 | if (!(bed->elf_osabi == ELFOSABI_GNU |
83c257ca | 1912 | || bed->elf_osabi == ELFOSABI_FREEBSD |
9c55345c | 1913 | /* GNU is still using the default value 0. */ |
d8045f23 | 1914 | || bed->elf_osabi == ELFOSABI_NONE)) |
83c257ca | 1915 | as_bad (_("symbol type \"%s\" is supported only by GNU and FreeBSD targets"), |
1e9cc1c2 | 1916 | type_name); |
d8045f23 NC |
1917 | type = BSF_FUNCTION | BSF_GNU_INDIRECT_FUNCTION; |
1918 | } | |
1e9cc1c2 | 1919 | else if (strcmp (type_name, "gnu_unique_object") == 0) |
3e7a7d11 | 1920 | { |
d3ce72d0 | 1921 | struct elf_backend_data *bed; |
3e7a7d11 | 1922 | |
d3ce72d0 | 1923 | bed = (struct elf_backend_data *) get_elf_backend_data (stdoutput); |
9c55345c TS |
1924 | if (!(bed->elf_osabi == ELFOSABI_GNU |
1925 | /* GNU is still using the default value 0. */ | |
3e7a7d11 NC |
1926 | || bed->elf_osabi == ELFOSABI_NONE)) |
1927 | as_bad (_("symbol type \"%s\" is supported only by GNU targets"), | |
1e9cc1c2 | 1928 | type_name); |
3e7a7d11 | 1929 | type = BSF_OBJECT | BSF_GNU_UNIQUE; |
9c55345c TS |
1930 | /* PR 10549: Always set OSABI field to GNU for objects containing unique symbols. */ |
1931 | bed->elf_osabi = ELFOSABI_GNU; | |
3e7a7d11 | 1932 | } |
904a31bf | 1933 | #ifdef md_elf_symbol_type |
1e9cc1c2 | 1934 | else if ((type = md_elf_symbol_type (type_name, sym, elfsym)) != -1) |
904a31bf AM |
1935 | ; |
1936 | #endif | |
252b5132 | 1937 | else |
1e9cc1c2 | 1938 | as_bad (_("unrecognized symbol type \"%s\""), type_name); |
252b5132 RH |
1939 | |
1940 | *input_line_pointer = c; | |
1941 | ||
aa8c34c3 JE |
1942 | if (*input_line_pointer == '"') |
1943 | ++input_line_pointer; | |
1944 | ||
904a31bf | 1945 | elfsym->symbol.flags |= type; |
252b5132 RH |
1946 | |
1947 | demand_empty_rest_of_line (); | |
1948 | } | |
1949 | ||
1950 | static void | |
dbe2df79 | 1951 | obj_elf_ident (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1952 | { |
1953 | static segT comment_section; | |
1954 | segT old_section = now_seg; | |
1955 | int old_subsection = now_subseg; | |
1956 | ||
5f91fe03 ILT |
1957 | #ifdef md_flush_pending_output |
1958 | md_flush_pending_output (); | |
1959 | #endif | |
1960 | ||
252b5132 RH |
1961 | if (!comment_section) |
1962 | { | |
1963 | char *p; | |
1964 | comment_section = subseg_new (".comment", 0); | |
1965 | bfd_set_section_flags (stdoutput, comment_section, | |
01fb1836 RM |
1966 | SEC_READONLY | SEC_HAS_CONTENTS |
1967 | | SEC_MERGE | SEC_STRINGS); | |
1968 | comment_section->entsize = 1; | |
cd000bff DJ |
1969 | #ifdef md_elf_section_change_hook |
1970 | md_elf_section_change_hook (); | |
1971 | #endif | |
252b5132 RH |
1972 | p = frag_more (1); |
1973 | *p = 0; | |
1974 | } | |
1975 | else | |
1976 | subseg_set (comment_section, 0); | |
38a57ae7 | 1977 | stringer (8 + 1); |
252b5132 RH |
1978 | subseg_set (old_section, old_subsection); |
1979 | } | |
1980 | ||
1981 | #ifdef INIT_STAB_SECTION | |
1982 | ||
1983 | /* The first entry in a .stabs section is special. */ | |
1984 | ||
1985 | void | |
dbe2df79 | 1986 | obj_elf_init_stab_section (segT seg) |
252b5132 RH |
1987 | { |
1988 | char *file; | |
1989 | char *p; | |
1990 | char *stabstr_name; | |
1991 | unsigned int stroff; | |
1992 | ||
1993 | /* Force the section to align to a longword boundary. Without this, | |
1994 | UnixWare ar crashes. */ | |
1995 | bfd_set_section_alignment (stdoutput, seg, 2); | |
1996 | ||
bf514e21 | 1997 | /* Make space for this first symbol. */ |
252b5132 | 1998 | p = frag_more (12); |
bf514e21 | 1999 | /* Zero it out. */ |
252b5132 | 2000 | memset (p, 0, 12); |
dbe2df79 | 2001 | as_where (&file, NULL); |
1e9cc1c2 | 2002 | stabstr_name = (char *) xmalloc (strlen (segment_name (seg)) + 4); |
252b5132 RH |
2003 | strcpy (stabstr_name, segment_name (seg)); |
2004 | strcat (stabstr_name, "str"); | |
2005 | stroff = get_stab_string_offset (file, stabstr_name); | |
91952a06 | 2006 | know (stroff == 1 || (stroff == 0 && file[0] == '\0')); |
252b5132 RH |
2007 | md_number_to_chars (p, stroff, 4); |
2008 | seg_info (seg)->stabu.p = p; | |
2009 | } | |
2010 | ||
2011 | #endif | |
2012 | ||
2013 | /* Fill in the counts in the first entry in a .stabs section. */ | |
2014 | ||
2015 | static void | |
dbe2df79 | 2016 | adjust_stab_sections (bfd *abfd, asection *sec, void *xxx ATTRIBUTE_UNUSED) |
252b5132 RH |
2017 | { |
2018 | char *name; | |
2019 | asection *strsec; | |
2020 | char *p; | |
2021 | int strsz, nsyms; | |
2022 | ||
2023 | if (strncmp (".stab", sec->name, 5)) | |
2024 | return; | |
2025 | if (!strcmp ("str", sec->name + strlen (sec->name) - 3)) | |
2026 | return; | |
2027 | ||
1e9cc1c2 | 2028 | name = (char *) alloca (strlen (sec->name) + 4); |
252b5132 RH |
2029 | strcpy (name, sec->name); |
2030 | strcat (name, "str"); | |
2031 | strsec = bfd_get_section_by_name (abfd, name); | |
2032 | if (strsec) | |
2033 | strsz = bfd_section_size (abfd, strsec); | |
2034 | else | |
2035 | strsz = 0; | |
2036 | nsyms = bfd_section_size (abfd, sec) / 12 - 1; | |
2037 | ||
2038 | p = seg_info (sec)->stabu.p; | |
9c2799c2 | 2039 | gas_assert (p != 0); |
252b5132 | 2040 | |
dbe2df79 AM |
2041 | bfd_h_put_16 (abfd, nsyms, p + 6); |
2042 | bfd_h_put_32 (abfd, strsz, p + 8); | |
252b5132 RH |
2043 | } |
2044 | ||
2045 | #ifdef NEED_ECOFF_DEBUG | |
2046 | ||
2047 | /* This function is called by the ECOFF code. It is supposed to | |
2048 | record the external symbol information so that the backend can | |
2049 | write it out correctly. The ELF backend doesn't actually handle | |
2050 | this at the moment, so we do it ourselves. We save the information | |
2051 | in the symbol. */ | |
2052 | ||
ae4a729b AM |
2053 | #ifdef OBJ_MAYBE_ELF |
2054 | static | |
2055 | #endif | |
252b5132 | 2056 | void |
dbe2df79 | 2057 | elf_ecoff_set_ext (symbolS *sym, struct ecoff_extr *ext) |
252b5132 | 2058 | { |
dbe2df79 | 2059 | symbol_get_bfdsym (sym)->udata.p = ext; |
252b5132 RH |
2060 | } |
2061 | ||
2062 | /* This function is called by bfd_ecoff_debug_externals. It is | |
2063 | supposed to *EXT to the external symbol information, and return | |
2064 | whether the symbol should be used at all. */ | |
2065 | ||
b34976b6 | 2066 | static bfd_boolean |
dbe2df79 | 2067 | elf_get_extr (asymbol *sym, EXTR *ext) |
252b5132 RH |
2068 | { |
2069 | if (sym->udata.p == NULL) | |
b34976b6 | 2070 | return FALSE; |
252b5132 | 2071 | *ext = *(EXTR *) sym->udata.p; |
b34976b6 | 2072 | return TRUE; |
252b5132 RH |
2073 | } |
2074 | ||
2075 | /* This function is called by bfd_ecoff_debug_externals. It has | |
2076 | nothing to do for ELF. */ | |
2077 | ||
252b5132 | 2078 | static void |
dbe2df79 AM |
2079 | elf_set_index (asymbol *sym ATTRIBUTE_UNUSED, |
2080 | bfd_size_type indx ATTRIBUTE_UNUSED) | |
252b5132 RH |
2081 | { |
2082 | } | |
2083 | ||
2084 | #endif /* NEED_ECOFF_DEBUG */ | |
2085 | ||
2086 | void | |
dbe2df79 | 2087 | elf_frob_symbol (symbolS *symp, int *puntp) |
252b5132 | 2088 | { |
49309057 | 2089 | struct elf_obj_sy *sy_obj; |
49002d7f | 2090 | expressionS *size; |
49309057 | 2091 | |
252b5132 RH |
2092 | #ifdef NEED_ECOFF_DEBUG |
2093 | if (ECOFF_DEBUGGING) | |
2094 | ecoff_frob_symbol (symp); | |
2095 | #endif | |
2096 | ||
49309057 ILT |
2097 | sy_obj = symbol_get_obj (symp); |
2098 | ||
49002d7f L |
2099 | size = sy_obj->size; |
2100 | if (size != NULL) | |
252b5132 | 2101 | { |
49002d7f L |
2102 | if (resolve_expression (size) |
2103 | && size->X_op == O_constant) | |
2104 | S_SET_SIZE (symp, size->X_add_number); | |
e1e90034 | 2105 | else |
49002d7f | 2106 | { |
21be61f5 | 2107 | if (flag_size_check == size_check_error) |
869fe6ea AM |
2108 | as_bad (_(".size expression for %s " |
2109 | "does not evaluate to a constant"), S_GET_NAME (symp)); | |
21be61f5 | 2110 | else |
869fe6ea AM |
2111 | as_warn (_(".size expression for %s " |
2112 | "does not evaluate to a constant"), S_GET_NAME (symp)); | |
49002d7f | 2113 | } |
49309057 ILT |
2114 | free (sy_obj->size); |
2115 | sy_obj->size = NULL; | |
252b5132 RH |
2116 | } |
2117 | ||
49309057 | 2118 | if (sy_obj->versioned_name != NULL) |
252b5132 | 2119 | { |
79082ff0 L |
2120 | char *p; |
2121 | ||
2122 | p = strchr (sy_obj->versioned_name, ELF_VER_CHR); | |
2123 | know (p != NULL); | |
2124 | ||
252b5132 RH |
2125 | /* This symbol was given a new name with the .symver directive. |
2126 | ||
13c56984 AM |
2127 | If this is an external reference, just rename the symbol to |
2128 | include the version string. This will make the relocs be | |
2129 | against the correct versioned symbol. | |
252b5132 RH |
2130 | |
2131 | If this is a definition, add an alias. FIXME: Using an alias | |
2132 | will permit the debugging information to refer to the right | |
2133 | symbol. However, it's not clear whether it is the best | |
2134 | approach. */ | |
2135 | ||
2136 | if (! S_IS_DEFINED (symp)) | |
2137 | { | |
252b5132 | 2138 | /* Verify that the name isn't using the @@ syntax--this is |
13c56984 AM |
2139 | reserved for definitions of the default version to link |
2140 | against. */ | |
252b5132 RH |
2141 | if (p[1] == ELF_VER_CHR) |
2142 | { | |
2143 | as_bad (_("invalid attempt to declare external version name as default in symbol `%s'"), | |
49309057 | 2144 | sy_obj->versioned_name); |
b34976b6 | 2145 | *puntp = TRUE; |
252b5132 | 2146 | } |
49309057 | 2147 | S_SET_NAME (symp, sy_obj->versioned_name); |
252b5132 RH |
2148 | } |
2149 | else | |
2150 | { | |
dbe2df79 | 2151 | if (p[1] == ELF_VER_CHR && p[2] == ELF_VER_CHR) |
79082ff0 L |
2152 | { |
2153 | size_t l; | |
2154 | ||
2155 | /* The @@@ syntax is a special case. It renames the | |
2156 | symbol name to versioned_name with one `@' removed. */ | |
2157 | l = strlen (&p[3]) + 1; | |
dbe2df79 | 2158 | memmove (&p[2], &p[3], l); |
79082ff0 L |
2159 | S_SET_NAME (symp, sy_obj->versioned_name); |
2160 | } | |
2161 | else | |
2162 | { | |
2163 | symbolS *symp2; | |
252b5132 | 2164 | |
79082ff0 L |
2165 | /* FIXME: Creating a new symbol here is risky. We're |
2166 | in the final loop over the symbol table. We can | |
2167 | get away with it only because the symbol goes to | |
2168 | the end of the list, where the loop will still see | |
2169 | it. It would probably be better to do this in | |
2170 | obj_frob_file_before_adjust. */ | |
252b5132 | 2171 | |
79082ff0 | 2172 | symp2 = symbol_find_or_make (sy_obj->versioned_name); |
252b5132 | 2173 | |
79082ff0 | 2174 | /* Now we act as though we saw symp2 = sym. */ |
252b5132 | 2175 | |
79082ff0 | 2176 | S_SET_SEGMENT (symp2, S_GET_SEGMENT (symp)); |
252b5132 | 2177 | |
79082ff0 L |
2178 | /* Subtracting out the frag address here is a hack |
2179 | because we are in the middle of the final loop. */ | |
2180 | S_SET_VALUE (symp2, | |
2181 | (S_GET_VALUE (symp) | |
2182 | - symbol_get_frag (symp)->fr_address)); | |
252b5132 | 2183 | |
79082ff0 | 2184 | symbol_set_frag (symp2, symbol_get_frag (symp)); |
252b5132 | 2185 | |
79082ff0 L |
2186 | /* This will copy over the size information. */ |
2187 | copy_symbol_attributes (symp2, symp); | |
252b5132 | 2188 | |
26eb4093 JJ |
2189 | S_SET_OTHER (symp2, S_GET_OTHER (symp)); |
2190 | ||
79082ff0 L |
2191 | if (S_IS_WEAK (symp)) |
2192 | S_SET_WEAK (symp2); | |
252b5132 | 2193 | |
79082ff0 L |
2194 | if (S_IS_EXTERNAL (symp)) |
2195 | S_SET_EXTERNAL (symp2); | |
2196 | } | |
252b5132 RH |
2197 | } |
2198 | } | |
2199 | ||
2200 | /* Double check weak symbols. */ | |
49309057 | 2201 | if (S_IS_WEAK (symp)) |
252b5132 RH |
2202 | { |
2203 | if (S_IS_COMMON (symp)) | |
6ce8b369 | 2204 | as_bad (_("symbol `%s' can not be both weak and common"), |
252b5132 RH |
2205 | S_GET_NAME (symp)); |
2206 | } | |
2207 | ||
2208 | #ifdef TC_MIPS | |
2209 | /* The Irix 5 and 6 assemblers set the type of any common symbol and | |
2210 | any undefined non-function symbol to STT_OBJECT. We try to be | |
2211 | compatible, since newer Irix 5 and 6 linkers care. However, we | |
2212 | only set undefined symbols to be STT_OBJECT if we are on Irix, | |
2213 | because that is the only time gcc will generate the necessary | |
2214 | .global directives to mark functions. */ | |
2215 | ||
2216 | if (S_IS_COMMON (symp)) | |
49309057 | 2217 | symbol_get_bfdsym (symp)->flags |= BSF_OBJECT; |
252b5132 RH |
2218 | |
2219 | if (strstr (TARGET_OS, "irix") != NULL | |
49309057 ILT |
2220 | && ! S_IS_DEFINED (symp) |
2221 | && (symbol_get_bfdsym (symp)->flags & BSF_FUNCTION) == 0) | |
2222 | symbol_get_bfdsym (symp)->flags |= BSF_OBJECT; | |
252b5132 | 2223 | #endif |
252b5132 RH |
2224 | } |
2225 | ||
060adf0e AM |
2226 | struct group_list |
2227 | { | |
2228 | asection **head; /* Section lists. */ | |
2229 | unsigned int *elt_count; /* Number of sections in each list. */ | |
2230 | unsigned int num_group; /* Number of lists. */ | |
1e9cc1c2 | 2231 | struct hash_control *indexes; /* Maps group name to index in head array. */ |
060adf0e AM |
2232 | }; |
2233 | ||
2234 | /* Called via bfd_map_over_sections. If SEC is a member of a group, | |
2235 | add it to a list of sections belonging to the group. INF is a | |
2236 | pointer to a struct group_list, which is where we store the head of | |
2237 | each list. */ | |
2238 | ||
2239 | static void | |
dbe2df79 | 2240 | build_group_lists (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *inf) |
060adf0e | 2241 | { |
1e9cc1c2 | 2242 | struct group_list *list = (struct group_list *) inf; |
aa1f4858 | 2243 | const char *group_name = elf_group_name (sec); |
060adf0e | 2244 | unsigned int i; |
1e9cc1c2 NC |
2245 | unsigned int *elem_idx; |
2246 | unsigned int *idx_ptr; | |
060adf0e AM |
2247 | |
2248 | if (group_name == NULL) | |
2249 | return; | |
2250 | ||
2251 | /* If this group already has a list, add the section to the head of | |
2252 | the list. */ | |
1e9cc1c2 NC |
2253 | elem_idx = (unsigned int *) hash_find (list->indexes, group_name); |
2254 | if (elem_idx != NULL) | |
060adf0e | 2255 | { |
1e9cc1c2 NC |
2256 | elf_next_in_group (sec) = list->head[*elem_idx]; |
2257 | list->head[*elem_idx] = sec; | |
2258 | list->elt_count[*elem_idx] += 1; | |
2259 | return; | |
060adf0e AM |
2260 | } |
2261 | ||
2262 | /* New group. Make the arrays bigger in chunks to minimize calls to | |
2263 | realloc. */ | |
2264 | i = list->num_group; | |
2265 | if ((i & 127) == 0) | |
2266 | { | |
2267 | unsigned int newsize = i + 128; | |
1e9cc1c2 NC |
2268 | list->head = (asection **) xrealloc (list->head, |
2269 | newsize * sizeof (*list->head)); | |
2270 | list->elt_count = (unsigned int *) | |
2271 | xrealloc (list->elt_count, newsize * sizeof (*list->elt_count)); | |
060adf0e AM |
2272 | } |
2273 | list->head[i] = sec; | |
2274 | list->elt_count[i] = 1; | |
2275 | list->num_group += 1; | |
1e9cc1c2 NC |
2276 | |
2277 | /* Add index to hash. */ | |
21d799b5 | 2278 | idx_ptr = (unsigned int *) xmalloc (sizeof (unsigned int)); |
1e9cc1c2 NC |
2279 | *idx_ptr = i; |
2280 | hash_insert (list->indexes, group_name, idx_ptr); | |
2281 | } | |
2282 | ||
2283 | static void free_section_idx (const char *key ATTRIBUTE_UNUSED, void *val) | |
2284 | { | |
2285 | free ((unsigned int *) val); | |
060adf0e AM |
2286 | } |
2287 | ||
252b5132 | 2288 | void |
709001e9 | 2289 | elf_adjust_symtab (void) |
252b5132 | 2290 | { |
060adf0e AM |
2291 | struct group_list list; |
2292 | unsigned int i; | |
2293 | ||
060adf0e AM |
2294 | /* Go find section groups. */ |
2295 | list.num_group = 0; | |
2296 | list.head = NULL; | |
2297 | list.elt_count = NULL; | |
709001e9 | 2298 | list.indexes = hash_new (); |
dbe2df79 | 2299 | bfd_map_over_sections (stdoutput, build_group_lists, &list); |
709001e9 | 2300 | |
060adf0e AM |
2301 | /* Make the SHT_GROUP sections that describe each section group. We |
2302 | can't set up the section contents here yet, because elf section | |
2303 | indices have yet to be calculated. elf.c:set_group_contents does | |
2304 | the rest of the work. */ | |
709001e9 | 2305 | for (i = 0; i < list.num_group; i++) |
060adf0e | 2306 | { |
aa1f4858 | 2307 | const char *group_name = elf_group_name (list.head[i]); |
9758f3fc | 2308 | const char *sec_name; |
060adf0e AM |
2309 | asection *s; |
2310 | flagword flags; | |
9758f3fc | 2311 | struct symbol *sy; |
587aac4e | 2312 | bfd_size_type size; |
060adf0e | 2313 | |
060adf0e | 2314 | flags = SEC_READONLY | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_GROUP; |
d2dab548 | 2315 | for (s = list.head[i]; s != NULL; s = elf_next_in_group (s)) |
68bfbfcc | 2316 | if ((s->flags ^ flags) & SEC_LINK_ONCE) |
d2dab548 AM |
2317 | { |
2318 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
2319 | if (s != list.head[i]) | |
2320 | { | |
2321 | as_warn (_("assuming all members of group `%s' are COMDAT"), | |
2322 | group_name); | |
2323 | break; | |
2324 | } | |
2325 | } | |
2326 | ||
709001e9 | 2327 | sec_name = ".group"; |
9758f3fc | 2328 | s = subseg_force_new (sec_name, 0); |
060adf0e AM |
2329 | if (s == NULL |
2330 | || !bfd_set_section_flags (stdoutput, s, flags) | |
2331 | || !bfd_set_section_alignment (stdoutput, s, 2)) | |
2332 | { | |
2333 | as_fatal (_("can't create group: %s"), | |
2334 | bfd_errmsg (bfd_get_error ())); | |
2335 | } | |
2f89ff8d | 2336 | elf_section_type (s) = SHT_GROUP; |
060adf0e | 2337 | |
aa1f4858 AM |
2338 | /* Pass a pointer to the first section in this group. */ |
2339 | elf_next_in_group (s) = list.head[i]; | |
709001e9 MM |
2340 | /* Make sure that the signature symbol for the group has the |
2341 | name of the group. */ | |
2342 | sy = symbol_find_exact (group_name); | |
2343 | if (!sy | |
2344 | || (sy != symbol_lastP | |
2345 | && (sy->sy_next == NULL | |
2346 | || sy->sy_next->sy_previous != sy))) | |
2347 | { | |
2348 | /* Create the symbol now. */ | |
2349 | sy = symbol_new (group_name, now_seg, (valueT) 0, frag_now); | |
69b70cfe RO |
2350 | #ifdef TE_SOLARIS |
2351 | /* Before Solaris 11 build 154, Sun ld rejects local group | |
2352 | signature symbols, so make them weak hidden instead. */ | |
2353 | symbol_get_bfdsym (sy)->flags |= BSF_WEAK; | |
2354 | S_SET_OTHER (sy, STV_HIDDEN); | |
2355 | #else | |
709001e9 | 2356 | symbol_get_obj (sy)->local = 1; |
69b70cfe | 2357 | #endif |
709001e9 MM |
2358 | symbol_table_insert (sy); |
2359 | } | |
2360 | elf_group_id (s) = symbol_get_bfdsym (sy); | |
060adf0e | 2361 | |
587aac4e AM |
2362 | size = 4 * (list.elt_count[i] + 1); |
2363 | bfd_set_section_size (stdoutput, s, size); | |
b7712f8d | 2364 | s->contents = (unsigned char *) frag_more (size); |
060adf0e | 2365 | frag_now->fr_fix = frag_now_fix_octets (); |
07cb2078 | 2366 | frag_wane (frag_now); |
060adf0e AM |
2367 | } |
2368 | ||
1e9cc1c2 NC |
2369 | /* Cleanup hash. */ |
2370 | hash_traverse (list.indexes, free_section_idx); | |
2371 | hash_die (list.indexes); | |
252b5132 RH |
2372 | } |
2373 | ||
709001e9 MM |
2374 | void |
2375 | elf_frob_file (void) | |
2376 | { | |
2377 | bfd_map_over_sections (stdoutput, adjust_stab_sections, NULL); | |
2378 | ||
2379 | #ifdef elf_tc_final_processing | |
2380 | elf_tc_final_processing (); | |
2381 | #endif | |
2382 | } | |
2383 | ||
4a1805b1 | 2384 | /* It removes any unneeded versioned symbols from the symbol table. */ |
339681c0 L |
2385 | |
2386 | void | |
dbe2df79 | 2387 | elf_frob_file_before_adjust (void) |
339681c0 L |
2388 | { |
2389 | if (symbol_rootP) | |
2390 | { | |
2391 | symbolS *symp; | |
2392 | ||
2393 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) | |
00e6e13d | 2394 | if (!S_IS_DEFINED (symp)) |
79082ff0 | 2395 | { |
00e6e13d | 2396 | if (symbol_get_obj (symp)->versioned_name) |
79082ff0 L |
2397 | { |
2398 | char *p; | |
2399 | ||
2400 | /* The @@@ syntax is a special case. If the symbol is | |
2401 | not defined, 2 `@'s will be removed from the | |
2402 | versioned_name. */ | |
2403 | ||
2404 | p = strchr (symbol_get_obj (symp)->versioned_name, | |
2405 | ELF_VER_CHR); | |
2406 | know (p != NULL); | |
dbe2df79 | 2407 | if (p[1] == ELF_VER_CHR && p[2] == ELF_VER_CHR) |
79082ff0 L |
2408 | { |
2409 | size_t l = strlen (&p[3]) + 1; | |
dbe2df79 | 2410 | memmove (&p[1], &p[3], l); |
79082ff0 L |
2411 | } |
2412 | if (symbol_used_p (symp) == 0 | |
2413 | && symbol_used_in_reloc_p (symp) == 0) | |
2414 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
2415 | } | |
00e6e13d JJ |
2416 | |
2417 | /* If there was .weak foo, but foo was neither defined nor | |
2418 | used anywhere, remove it. */ | |
2419 | ||
2420 | else if (S_IS_WEAK (symp) | |
2421 | && symbol_used_p (symp) == 0 | |
2422 | && symbol_used_in_reloc_p (symp) == 0) | |
2423 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
79082ff0 | 2424 | } |
339681c0 L |
2425 | } |
2426 | } | |
2427 | ||
252b5132 RH |
2428 | /* It is required that we let write_relocs have the opportunity to |
2429 | optimize away fixups before output has begun, since it is possible | |
2430 | to eliminate all fixups for a section and thus we never should | |
2431 | have generated the relocation section. */ | |
2432 | ||
2433 | void | |
dbe2df79 | 2434 | elf_frob_file_after_relocs (void) |
252b5132 RH |
2435 | { |
2436 | #ifdef NEED_ECOFF_DEBUG | |
2437 | if (ECOFF_DEBUGGING) | |
2438 | /* Generate the ECOFF debugging information. */ | |
2439 | { | |
2440 | const struct ecoff_debug_swap *debug_swap; | |
2441 | struct ecoff_debug_info debug; | |
2442 | char *buf; | |
2443 | asection *sec; | |
2444 | ||
2445 | debug_swap | |
2446 | = get_elf_backend_data (stdoutput)->elf_backend_ecoff_debug_swap; | |
dbe2df79 | 2447 | know (debug_swap != NULL); |
252b5132 RH |
2448 | ecoff_build_debug (&debug.symbolic_header, &buf, debug_swap); |
2449 | ||
2450 | /* Set up the pointers in debug. */ | |
2451 | #define SET(ptr, offset, type) \ | |
2452 | debug.ptr = (type) (buf + debug.symbolic_header.offset) | |
2453 | ||
2454 | SET (line, cbLineOffset, unsigned char *); | |
dbe2df79 AM |
2455 | SET (external_dnr, cbDnOffset, void *); |
2456 | SET (external_pdr, cbPdOffset, void *); | |
2457 | SET (external_sym, cbSymOffset, void *); | |
2458 | SET (external_opt, cbOptOffset, void *); | |
252b5132 RH |
2459 | SET (external_aux, cbAuxOffset, union aux_ext *); |
2460 | SET (ss, cbSsOffset, char *); | |
dbe2df79 AM |
2461 | SET (external_fdr, cbFdOffset, void *); |
2462 | SET (external_rfd, cbRfdOffset, void *); | |
252b5132 RH |
2463 | /* ssext and external_ext are set up just below. */ |
2464 | ||
2465 | #undef SET | |
2466 | ||
2467 | /* Set up the external symbols. */ | |
2468 | debug.ssext = debug.ssext_end = NULL; | |
2469 | debug.external_ext = debug.external_ext_end = NULL; | |
b34976b6 | 2470 | if (! bfd_ecoff_debug_externals (stdoutput, &debug, debug_swap, TRUE, |
252b5132 | 2471 | elf_get_extr, elf_set_index)) |
6ce8b369 | 2472 | as_fatal (_("failed to set up debugging information: %s"), |
252b5132 RH |
2473 | bfd_errmsg (bfd_get_error ())); |
2474 | ||
2475 | sec = bfd_get_section_by_name (stdoutput, ".mdebug"); | |
9c2799c2 | 2476 | gas_assert (sec != NULL); |
252b5132 | 2477 | |
b34976b6 | 2478 | know (!stdoutput->output_has_begun); |
252b5132 RH |
2479 | |
2480 | /* We set the size of the section, call bfd_set_section_contents | |
2481 | to force the ELF backend to allocate a file position, and then | |
2482 | write out the data. FIXME: Is this really the best way to do | |
2483 | this? */ | |
587aac4e AM |
2484 | bfd_set_section_size |
2485 | (stdoutput, sec, bfd_ecoff_debug_size (stdoutput, &debug, debug_swap)); | |
252b5132 | 2486 | |
5f91fe03 | 2487 | /* Pass BUF to bfd_set_section_contents because this will |
13c56984 AM |
2488 | eventually become a call to fwrite, and ISO C prohibits |
2489 | passing a NULL pointer to a stdio function even if the | |
2490 | pointer will not be used. */ | |
dbe2df79 | 2491 | if (! bfd_set_section_contents (stdoutput, sec, buf, 0, 0)) |
6ce8b369 | 2492 | as_fatal (_("can't start writing .mdebug section: %s"), |
252b5132 RH |
2493 | bfd_errmsg (bfd_get_error ())); |
2494 | ||
b34976b6 | 2495 | know (stdoutput->output_has_begun); |
252b5132 RH |
2496 | know (sec->filepos != 0); |
2497 | ||
2498 | if (! bfd_ecoff_write_debug (stdoutput, &debug, debug_swap, | |
2499 | sec->filepos)) | |
6ce8b369 | 2500 | as_fatal (_("could not write .mdebug section: %s"), |
252b5132 RH |
2501 | bfd_errmsg (bfd_get_error ())); |
2502 | } | |
2503 | #endif /* NEED_ECOFF_DEBUG */ | |
2504 | } | |
2505 | ||
2506 | #ifdef SCO_ELF | |
2507 | ||
aaa2624b | 2508 | /* Heavily plagiarized from obj_elf_version. The idea is to emit the |
252b5132 RH |
2509 | SCO specific identifier in the .notes section to satisfy the SCO |
2510 | linker. | |
2511 | ||
2512 | This looks more complicated than it really is. As opposed to the | |
2513 | "obvious" solution, this should handle the cross dev cases | |
2514 | correctly. (i.e, hosting on a 64 bit big endian processor, but | |
2515 | generating SCO Elf code) Efficiency isn't a concern, as there | |
2516 | should be exactly one of these sections per object module. | |
2517 | ||
2518 | SCO OpenServer 5 identifies it's ELF modules with a standard ELF | |
2519 | .note section. | |
2520 | ||
fa306131 AM |
2521 | int_32 namesz = 4 ; Name size |
2522 | int_32 descsz = 12 ; Descriptive information | |
2523 | int_32 type = 1 ; | |
2524 | char name[4] = "SCO" ; Originator name ALWAYS SCO + NULL | |
252b5132 RH |
2525 | int_32 version = (major ver # << 16) | version of tools ; |
2526 | int_32 source = (tool_id << 16 ) | 1 ; | |
2527 | int_32 info = 0 ; These are set by the SCO tools, but we | |
13c56984 | 2528 | don't know enough about the source |
252b5132 RH |
2529 | environment to set them. SCO ld currently |
2530 | ignores them, and recommends we set them | |
2531 | to zero. */ | |
2532 | ||
2533 | #define SCO_MAJOR_VERSION 0x1 | |
2534 | #define SCO_MINOR_VERSION 0x1 | |
2535 | ||
2536 | void | |
dbe2df79 | 2537 | sco_id (void) |
252b5132 RH |
2538 | { |
2539 | ||
2540 | char *name; | |
2541 | unsigned int c; | |
2542 | char ch; | |
2543 | char *p; | |
2544 | asection *seg = now_seg; | |
2545 | subsegT subseg = now_subseg; | |
2546 | Elf_Internal_Note i_note; | |
2547 | Elf_External_Note e_note; | |
dbe2df79 | 2548 | asection *note_secp = NULL; |
252b5132 RH |
2549 | int i, len; |
2550 | ||
2551 | /* create the .note section */ | |
2552 | ||
2553 | note_secp = subseg_new (".note", 0); | |
2554 | bfd_set_section_flags (stdoutput, | |
2555 | note_secp, | |
2556 | SEC_HAS_CONTENTS | SEC_READONLY); | |
2557 | ||
2558 | /* process the version string */ | |
2559 | ||
fa306131 | 2560 | i_note.namesz = 4; |
252b5132 RH |
2561 | i_note.descsz = 12; /* 12 descriptive bytes */ |
2562 | i_note.type = NT_VERSION; /* Contains a version string */ | |
2563 | ||
2564 | p = frag_more (sizeof (i_note.namesz)); | |
dbe2df79 | 2565 | md_number_to_chars (p, i_note.namesz, 4); |
252b5132 RH |
2566 | |
2567 | p = frag_more (sizeof (i_note.descsz)); | |
dbe2df79 | 2568 | md_number_to_chars (p, i_note.descsz, 4); |
252b5132 RH |
2569 | |
2570 | p = frag_more (sizeof (i_note.type)); | |
dbe2df79 | 2571 | md_number_to_chars (p, i_note.type, 4); |
252b5132 RH |
2572 | |
2573 | p = frag_more (4); | |
fa306131 | 2574 | strcpy (p, "SCO"); |
252b5132 RH |
2575 | |
2576 | /* Note: this is the version number of the ELF we're representing */ | |
2577 | p = frag_more (4); | |
2578 | md_number_to_chars (p, (SCO_MAJOR_VERSION << 16) | (SCO_MINOR_VERSION), 4); | |
2579 | ||
2580 | /* Here, we pick a magic number for ourselves (yes, I "registered" | |
2581 | it with SCO. The bottom bit shows that we are compat with the | |
2582 | SCO ABI. */ | |
2583 | p = frag_more (4); | |
2584 | md_number_to_chars (p, 0x4c520000 | 0x0001, 4); | |
2585 | ||
2586 | /* If we knew (or cared) what the source language options were, we'd | |
2587 | fill them in here. SCO has given us permission to ignore these | |
2588 | and just set them to zero. */ | |
2589 | p = frag_more (4); | |
2590 | md_number_to_chars (p, 0x0000, 4); | |
fa306131 | 2591 | |
252b5132 RH |
2592 | frag_align (2, 0, 0); |
2593 | ||
2594 | /* We probably can't restore the current segment, for there likely | |
2595 | isn't one yet... */ | |
2596 | if (seg && subseg) | |
2597 | subseg_set (seg, subseg); | |
2598 | ||
2599 | } | |
2600 | ||
2601 | #endif /* SCO_ELF */ | |
2602 | ||
bc6b4acc RO |
2603 | static void |
2604 | elf_generate_asm_lineno (void) | |
2605 | { | |
2606 | #ifdef NEED_ECOFF_DEBUG | |
2607 | if (ECOFF_DEBUGGING) | |
2608 | ecoff_generate_asm_lineno (); | |
2609 | #endif | |
2610 | } | |
2611 | ||
2612 | static void | |
bd937d21 L |
2613 | elf_process_stab (segT sec ATTRIBUTE_UNUSED, |
2614 | int what ATTRIBUTE_UNUSED, | |
2615 | const char *string ATTRIBUTE_UNUSED, | |
2616 | int type ATTRIBUTE_UNUSED, | |
2617 | int other ATTRIBUTE_UNUSED, | |
2618 | int desc ATTRIBUTE_UNUSED) | |
bc6b4acc RO |
2619 | { |
2620 | #ifdef NEED_ECOFF_DEBUG | |
2621 | if (ECOFF_DEBUGGING) | |
2622 | ecoff_stab (sec, what, string, type, other, desc); | |
2623 | #endif | |
2624 | } | |
2625 | ||
5110c57e | 2626 | static int |
dbe2df79 | 2627 | elf_separate_stab_sections (void) |
5110c57e HPN |
2628 | { |
2629 | #ifdef NEED_ECOFF_DEBUG | |
2630 | return (!ECOFF_DEBUGGING); | |
2631 | #else | |
2632 | return 1; | |
2633 | #endif | |
2634 | } | |
2635 | ||
2636 | static void | |
dbe2df79 | 2637 | elf_init_stab_section (segT seg) |
5110c57e HPN |
2638 | { |
2639 | #ifdef NEED_ECOFF_DEBUG | |
2640 | if (!ECOFF_DEBUGGING) | |
2641 | #endif | |
2642 | obj_elf_init_stab_section (seg); | |
2643 | } | |
2644 | ||
252b5132 RH |
2645 | const struct format_ops elf_format_ops = |
2646 | { | |
2647 | bfd_target_elf_flavour, | |
4c63da97 AM |
2648 | 0, /* dfl_leading_underscore */ |
2649 | 1, /* emit_section_symbols */ | |
5110c57e HPN |
2650 | elf_begin, |
2651 | elf_file_symbol, | |
252b5132 RH |
2652 | elf_frob_symbol, |
2653 | elf_frob_file, | |
339681c0 | 2654 | elf_frob_file_before_adjust, |
a161fe53 | 2655 | 0, /* obj_frob_file_before_fix */ |
252b5132 RH |
2656 | elf_frob_file_after_relocs, |
2657 | elf_s_get_size, elf_s_set_size, | |
2658 | elf_s_get_align, elf_s_set_align, | |
4c63da97 | 2659 | elf_s_get_other, |
5110c57e | 2660 | elf_s_set_other, |
4c63da97 | 2661 | 0, /* s_get_desc */ |
5110c57e HPN |
2662 | 0, /* s_set_desc */ |
2663 | 0, /* s_get_type */ | |
2664 | 0, /* s_set_type */ | |
252b5132 | 2665 | elf_copy_symbol_attributes, |
bc6b4acc RO |
2666 | elf_generate_asm_lineno, |
2667 | elf_process_stab, | |
5110c57e HPN |
2668 | elf_separate_stab_sections, |
2669 | elf_init_stab_section, | |
252b5132 RH |
2670 | elf_sec_sym_ok_for_reloc, |
2671 | elf_pop_insert, | |
2672 | #ifdef NEED_ECOFF_DEBUG | |
2673 | elf_ecoff_set_ext, | |
2674 | #else | |
4c63da97 | 2675 | 0, /* ecoff_set_ext */ |
252b5132 | 2676 | #endif |
4c63da97 | 2677 | elf_obj_read_begin_hook, |
4cae74aa | 2678 | elf_obj_symbol_new_hook, |
645ea3ea AM |
2679 | 0, |
2680 | elf_adjust_symtab | |
252b5132 | 2681 | }; |