Commit | Line | Data |
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252b5132 | 1 | /* ELF object file format |
6f2750fe | 2 | Copyright (C) 1992-2016 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 | ||
93f11b16 DD |
67 | #ifdef TC_PRU |
68 | #include "elf/pru.h" | |
69 | #endif | |
70 | ||
dbe2df79 AM |
71 | static void obj_elf_line (int); |
72 | static void obj_elf_size (int); | |
73 | static void obj_elf_type (int); | |
74 | static void obj_elf_ident (int); | |
75 | static void obj_elf_weak (int); | |
76 | static void obj_elf_local (int); | |
77 | static void obj_elf_visibility (int); | |
78 | static void obj_elf_symver (int); | |
79 | static void obj_elf_subsection (int); | |
80 | static void obj_elf_popsection (int); | |
0420f52b | 81 | static void obj_elf_gnu_attribute (int); |
dbe2df79 | 82 | static void obj_elf_tls_common (int); |
13c56984 | 83 | static void obj_elf_lcomm (int); |
8fe53b44 | 84 | static void obj_elf_struct (int); |
252b5132 RH |
85 | |
86 | static const pseudo_typeS elf_pseudo_table[] = | |
87 | { | |
88 | {"comm", obj_elf_common, 0}, | |
9be1cda6 | 89 | {"common", obj_elf_common, 1}, |
252b5132 | 90 | {"ident", obj_elf_ident, 0}, |
13c56984 | 91 | {"lcomm", obj_elf_lcomm, 0}, |
252b5132 RH |
92 | {"local", obj_elf_local, 0}, |
93 | {"previous", obj_elf_previous, 0}, | |
94 | {"section", obj_elf_section, 0}, | |
95 | {"section.s", obj_elf_section, 0}, | |
96 | {"sect", obj_elf_section, 0}, | |
97 | {"sect.s", obj_elf_section, 0}, | |
9de8d8f1 RH |
98 | {"pushsection", obj_elf_section, 1}, |
99 | {"popsection", obj_elf_popsection, 0}, | |
252b5132 RH |
100 | {"size", obj_elf_size, 0}, |
101 | {"type", obj_elf_type, 0}, | |
102 | {"version", obj_elf_version, 0}, | |
103 | {"weak", obj_elf_weak, 0}, | |
104 | ||
bf514e21 | 105 | /* These define symbol visibility. */ |
2e13b764 NC |
106 | {"internal", obj_elf_visibility, STV_INTERNAL}, |
107 | {"hidden", obj_elf_visibility, STV_HIDDEN}, | |
108 | {"protected", obj_elf_visibility, STV_PROTECTED}, | |
109 | ||
252b5132 RH |
110 | /* These are used for stabs-in-elf configurations. */ |
111 | {"line", obj_elf_line, 0}, | |
112 | ||
113 | /* This is a GNU extension to handle symbol versions. */ | |
114 | {"symver", obj_elf_symver, 0}, | |
115 | ||
116 | /* A GNU extension to change subsection only. */ | |
117 | {"subsection", obj_elf_subsection, 0}, | |
118 | ||
119 | /* These are GNU extensions to aid in garbage collecting C++ vtables. */ | |
dbe2df79 AM |
120 | {"vtable_inherit", (void (*) (int)) &obj_elf_vtable_inherit, 0}, |
121 | {"vtable_entry", (void (*) (int)) &obj_elf_vtable_entry, 0}, | |
252b5132 | 122 | |
0420f52b MR |
123 | /* A GNU extension for object attributes. */ |
124 | {"gnu_attribute", obj_elf_gnu_attribute, 0}, | |
125 | ||
bf514e21 | 126 | /* These are used for dwarf. */ |
252b5132 RH |
127 | {"2byte", cons, 2}, |
128 | {"4byte", cons, 4}, | |
129 | {"8byte", cons, 8}, | |
87ccc1b0 | 130 | /* These are used for dwarf2. */ |
dbe2df79 | 131 | { "file", (void (*) (int)) dwarf2_directive_file, 0 }, |
87ccc1b0 | 132 | { "loc", dwarf2_directive_loc, 0 }, |
07a53e5c | 133 | { "loc_mark_labels", dwarf2_directive_loc_mark_labels, 0 }, |
252b5132 RH |
134 | |
135 | /* We need to trap the section changing calls to handle .previous. */ | |
136 | {"data", obj_elf_data, 0}, | |
8fe53b44 JB |
137 | {"offset", obj_elf_struct, 0}, |
138 | {"struct", obj_elf_struct, 0}, | |
252b5132 RH |
139 | {"text", obj_elf_text, 0}, |
140 | ||
13ae64f3 JJ |
141 | {"tls_common", obj_elf_tls_common, 0}, |
142 | ||
252b5132 | 143 | /* End sentinel. */ |
ab9da554 | 144 | {NULL, NULL, 0}, |
252b5132 RH |
145 | }; |
146 | ||
147 | static const pseudo_typeS ecoff_debug_pseudo_table[] = | |
148 | { | |
149 | #ifdef NEED_ECOFF_DEBUG | |
150 | /* COFF style debugging information for ECOFF. .ln is not used; .loc | |
151 | is used instead. */ | |
152 | { "def", ecoff_directive_def, 0 }, | |
153 | { "dim", ecoff_directive_dim, 0 }, | |
154 | { "endef", ecoff_directive_endef, 0 }, | |
155 | { "file", ecoff_directive_file, 0 }, | |
156 | { "scl", ecoff_directive_scl, 0 }, | |
157 | { "tag", ecoff_directive_tag, 0 }, | |
158 | { "val", ecoff_directive_val, 0 }, | |
159 | ||
160 | /* COFF debugging requires pseudo-ops .size and .type, but ELF | |
161 | already has meanings for those. We use .esize and .etype | |
162 | instead. These are only generated by gcc anyhow. */ | |
163 | { "esize", ecoff_directive_size, 0 }, | |
164 | { "etype", ecoff_directive_type, 0 }, | |
165 | ||
166 | /* ECOFF specific debugging information. */ | |
167 | { "begin", ecoff_directive_begin, 0 }, | |
168 | { "bend", ecoff_directive_bend, 0 }, | |
169 | { "end", ecoff_directive_end, 0 }, | |
170 | { "ent", ecoff_directive_ent, 0 }, | |
171 | { "fmask", ecoff_directive_fmask, 0 }, | |
172 | { "frame", ecoff_directive_frame, 0 }, | |
173 | { "loc", ecoff_directive_loc, 0 }, | |
174 | { "mask", ecoff_directive_mask, 0 }, | |
175 | ||
176 | /* Other ECOFF directives. */ | |
177 | { "extern", ecoff_directive_extern, 0 }, | |
178 | ||
179 | /* These are used on Irix. I don't know how to implement them. */ | |
180 | { "alias", s_ignore, 0 }, | |
181 | { "bgnb", s_ignore, 0 }, | |
182 | { "endb", s_ignore, 0 }, | |
183 | { "lab", s_ignore, 0 }, | |
184 | { "noalias", s_ignore, 0 }, | |
185 | { "verstamp", s_ignore, 0 }, | |
186 | { "vreg", s_ignore, 0 }, | |
187 | #endif | |
188 | ||
ab9da554 | 189 | {NULL, NULL, 0} /* end sentinel */ |
252b5132 RH |
190 | }; |
191 | ||
192 | #undef NO_RELOC | |
193 | #include "aout/aout64.h" | |
194 | ||
195 | /* This is called when the assembler starts. */ | |
196 | ||
3b22753a L |
197 | asection *elf_com_section_ptr; |
198 | ||
252b5132 | 199 | void |
dbe2df79 | 200 | elf_begin (void) |
252b5132 | 201 | { |
dbe2df79 AM |
202 | asection *s; |
203 | ||
252b5132 | 204 | /* Add symbols for the known sections to the symbol table. */ |
dbe2df79 AM |
205 | s = bfd_get_section_by_name (stdoutput, TEXT_SECTION_NAME); |
206 | symbol_table_insert (section_symbol (s)); | |
207 | s = bfd_get_section_by_name (stdoutput, DATA_SECTION_NAME); | |
208 | symbol_table_insert (section_symbol (s)); | |
209 | s = bfd_get_section_by_name (stdoutput, BSS_SECTION_NAME); | |
210 | symbol_table_insert (section_symbol (s)); | |
3b22753a | 211 | elf_com_section_ptr = bfd_com_section_ptr; |
252b5132 RH |
212 | } |
213 | ||
214 | void | |
dbe2df79 | 215 | elf_pop_insert (void) |
252b5132 RH |
216 | { |
217 | pop_insert (elf_pseudo_table); | |
218 | if (ECOFF_DEBUGGING) | |
219 | pop_insert (ecoff_debug_pseudo_table); | |
220 | } | |
221 | ||
222 | static bfd_vma | |
dbe2df79 | 223 | elf_s_get_size (symbolS *sym) |
252b5132 RH |
224 | { |
225 | return S_GET_SIZE (sym); | |
226 | } | |
227 | ||
228 | static void | |
dbe2df79 | 229 | elf_s_set_size (symbolS *sym, bfd_vma sz) |
252b5132 RH |
230 | { |
231 | S_SET_SIZE (sym, sz); | |
232 | } | |
233 | ||
234 | static bfd_vma | |
dbe2df79 | 235 | elf_s_get_align (symbolS *sym) |
252b5132 RH |
236 | { |
237 | return S_GET_ALIGN (sym); | |
238 | } | |
239 | ||
240 | static void | |
dbe2df79 | 241 | elf_s_set_align (symbolS *sym, bfd_vma align) |
252b5132 RH |
242 | { |
243 | S_SET_ALIGN (sym, align); | |
244 | } | |
245 | ||
4c63da97 | 246 | int |
dbe2df79 | 247 | elf_s_get_other (symbolS *sym) |
4c63da97 AM |
248 | { |
249 | return elf_symbol (symbol_get_bfdsym (sym))->internal_elf_sym.st_other; | |
250 | } | |
251 | ||
5110c57e | 252 | static void |
dbe2df79 | 253 | elf_s_set_other (symbolS *sym, int other) |
5110c57e HPN |
254 | { |
255 | S_SET_OTHER (sym, other); | |
256 | } | |
257 | ||
252b5132 | 258 | static int |
dbe2df79 | 259 | elf_sec_sym_ok_for_reloc (asection *sec) |
252b5132 RH |
260 | { |
261 | return obj_sec_sym_ok_for_reloc (sec); | |
262 | } | |
263 | ||
264 | void | |
c04f5787 | 265 | elf_file_symbol (const char *s, int appfile) |
252b5132 | 266 | { |
c04f5787 AM |
267 | if (!appfile |
268 | || symbol_rootP == NULL | |
269 | || symbol_rootP->bsym == NULL | |
270 | || (symbol_rootP->bsym->flags & BSF_FILE) == 0) | |
271 | { | |
272 | symbolS *sym; | |
e57e6ddc | 273 | size_t name_length; |
252b5132 | 274 | |
c04f5787 AM |
275 | sym = symbol_new (s, absolute_section, 0, NULL); |
276 | symbol_set_frag (sym, &zero_address_frag); | |
efa19bfd JB |
277 | |
278 | name_length = strlen (s); | |
279 | if (name_length > strlen (S_GET_NAME (sym))) | |
280 | { | |
281 | obstack_grow (¬es, s, name_length + 1); | |
1e9cc1c2 | 282 | S_SET_NAME (sym, (const char *) obstack_finish (¬es)); |
efa19bfd JB |
283 | } |
284 | else | |
285 | strcpy ((char *) S_GET_NAME (sym), s); | |
286 | ||
c04f5787 | 287 | symbol_get_bfdsym (sym)->flags |= BSF_FILE; |
252b5132 | 288 | |
fbdf9406 JB |
289 | if (symbol_rootP != sym |
290 | && (symbol_rootP->bsym == NULL | |
291 | || !(symbol_rootP->bsym->flags & BSF_FILE))) | |
c04f5787 AM |
292 | { |
293 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); | |
294 | symbol_insert (sym, symbol_rootP, &symbol_rootP, &symbol_lastP); | |
fbdf9406 JB |
295 | } |
296 | ||
252b5132 | 297 | #ifdef DEBUG |
fbdf9406 | 298 | verify_symbol_chain (symbol_rootP, symbol_lastP); |
252b5132 RH |
299 | #endif |
300 | } | |
301 | ||
302 | #ifdef NEED_ECOFF_DEBUG | |
f17c130b | 303 | ecoff_new_file (s, appfile); |
252b5132 RH |
304 | #endif |
305 | } | |
306 | ||
e13bab5a AM |
307 | /* Called from read.c:s_comm after we've parsed .comm symbol, size. |
308 | Parse a possible alignment value. */ | |
309 | ||
3b22753a | 310 | symbolS * |
e13bab5a | 311 | elf_common_parse (int ignore ATTRIBUTE_UNUSED, symbolS *symbolP, addressT size) |
252b5132 | 312 | { |
e13bab5a AM |
313 | addressT align = 0; |
314 | int is_local = symbol_get_obj (symbolP)->local; | |
252b5132 | 315 | |
e13bab5a | 316 | if (*input_line_pointer == ',') |
9be1cda6 | 317 | { |
e13bab5a | 318 | char *save = input_line_pointer; |
9be1cda6 | 319 | |
252b5132 RH |
320 | input_line_pointer++; |
321 | SKIP_WHITESPACE (); | |
e13bab5a AM |
322 | |
323 | if (*input_line_pointer == '"') | |
252b5132 | 324 | { |
e13bab5a AM |
325 | /* For sparc. Accept .common symbol, length, "bss" */ |
326 | input_line_pointer++; | |
327 | /* Some use the dot, some don't. */ | |
328 | if (*input_line_pointer == '.') | |
329 | input_line_pointer++; | |
330 | /* Some say data, some say bss. */ | |
331 | if (strncmp (input_line_pointer, "bss\"", 4) == 0) | |
332 | input_line_pointer += 4; | |
333 | else if (strncmp (input_line_pointer, "data\"", 5) == 0) | |
334 | input_line_pointer += 5; | |
335 | else | |
252b5132 | 336 | { |
e13bab5a AM |
337 | char *p = input_line_pointer; |
338 | char c; | |
339 | ||
340 | while (*--p != '"') | |
341 | ; | |
342 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
343 | if (*input_line_pointer++ == '"') | |
344 | break; | |
345 | c = *input_line_pointer; | |
346 | *input_line_pointer = '\0'; | |
347 | as_bad (_("bad .common segment %s"), p); | |
348 | *input_line_pointer = c; | |
349 | ignore_rest_of_line (); | |
350 | return NULL; | |
252b5132 | 351 | } |
e13bab5a AM |
352 | /* ??? Don't ask me why these are always global. */ |
353 | is_local = 0; | |
252b5132 RH |
354 | } |
355 | else | |
356 | { | |
e13bab5a AM |
357 | input_line_pointer = save; |
358 | align = parse_align (is_local); | |
359 | if (align == (addressT) -1) | |
360 | return NULL; | |
252b5132 RH |
361 | } |
362 | } | |
e13bab5a AM |
363 | |
364 | if (is_local) | |
365 | { | |
366 | bss_alloc (symbolP, size, align); | |
367 | S_CLEAR_EXTERNAL (symbolP); | |
368 | } | |
252b5132 RH |
369 | else |
370 | { | |
e13bab5a AM |
371 | S_SET_VALUE (symbolP, size); |
372 | S_SET_ALIGN (symbolP, align); | |
373 | S_SET_EXTERNAL (symbolP); | |
3b22753a | 374 | S_SET_SEGMENT (symbolP, elf_com_section_ptr); |
252b5132 RH |
375 | } |
376 | ||
49309057 | 377 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; |
252b5132 | 378 | |
13ae64f3 | 379 | return symbolP; |
252b5132 RH |
380 | } |
381 | ||
13ae64f3 | 382 | void |
dbe2df79 | 383 | obj_elf_common (int is_common) |
13ae64f3 | 384 | { |
e13bab5a AM |
385 | if (flag_mri && is_common) |
386 | s_mri_common (0); | |
387 | else | |
388 | s_comm_internal (0, elf_common_parse); | |
13ae64f3 JJ |
389 | } |
390 | ||
391 | static void | |
dbe2df79 | 392 | obj_elf_tls_common (int ignore ATTRIBUTE_UNUSED) |
13ae64f3 | 393 | { |
e13bab5a | 394 | symbolS *symbolP = s_comm_internal (0, elf_common_parse); |
13ae64f3 JJ |
395 | |
396 | if (symbolP) | |
397 | symbol_get_bfdsym (symbolP)->flags |= BSF_THREAD_LOCAL; | |
398 | } | |
399 | ||
13c56984 AM |
400 | static void |
401 | obj_elf_lcomm (int ignore ATTRIBUTE_UNUSED) | |
402 | { | |
403 | symbolS *symbolP = s_comm_internal (0, s_lcomm_internal); | |
404 | ||
405 | if (symbolP) | |
406 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; | |
407 | } | |
408 | ||
6e8bd58f NS |
409 | static symbolS * |
410 | get_sym_from_input_line_and_check (void) | |
411 | { | |
412 | char *name; | |
413 | char c; | |
414 | symbolS *sym; | |
415 | ||
d02603dc | 416 | c = get_symbol_name (& name); |
6e8bd58f NS |
417 | sym = symbol_find_or_make (name); |
418 | *input_line_pointer = c; | |
d02603dc | 419 | SKIP_WHITESPACE_AFTER_NAME (); |
6e8bd58f NS |
420 | |
421 | /* There is no symbol name if input_line_pointer has not moved. */ | |
422 | if (name == input_line_pointer) | |
423 | as_bad (_("Missing symbol name in directive")); | |
424 | return sym; | |
425 | } | |
426 | ||
252b5132 | 427 | static void |
dbe2df79 | 428 | obj_elf_local (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 429 | { |
252b5132 RH |
430 | int c; |
431 | symbolS *symbolP; | |
432 | ||
433 | do | |
434 | { | |
01642c12 | 435 | symbolP = get_sym_from_input_line_and_check (); |
6e8bd58f | 436 | c = *input_line_pointer; |
252b5132 | 437 | S_CLEAR_EXTERNAL (symbolP); |
49309057 | 438 | symbol_get_obj (symbolP)->local = 1; |
252b5132 RH |
439 | if (c == ',') |
440 | { | |
441 | input_line_pointer++; | |
442 | SKIP_WHITESPACE (); | |
443 | if (*input_line_pointer == '\n') | |
444 | c = '\n'; | |
445 | } | |
446 | } | |
447 | while (c == ','); | |
448 | demand_empty_rest_of_line (); | |
449 | } | |
450 | ||
451 | static void | |
dbe2df79 | 452 | obj_elf_weak (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 453 | { |
252b5132 RH |
454 | int c; |
455 | symbolS *symbolP; | |
456 | ||
457 | do | |
458 | { | |
01642c12 | 459 | symbolP = get_sym_from_input_line_and_check (); |
6e8bd58f | 460 | c = *input_line_pointer; |
252b5132 | 461 | S_SET_WEAK (symbolP); |
252b5132 RH |
462 | if (c == ',') |
463 | { | |
464 | input_line_pointer++; | |
465 | SKIP_WHITESPACE (); | |
466 | if (*input_line_pointer == '\n') | |
467 | c = '\n'; | |
468 | } | |
469 | } | |
470 | while (c == ','); | |
471 | demand_empty_rest_of_line (); | |
472 | } | |
473 | ||
2e13b764 | 474 | static void |
dbe2df79 | 475 | obj_elf_visibility (int visibility) |
2e13b764 | 476 | { |
2e13b764 NC |
477 | int c; |
478 | symbolS *symbolP; | |
479 | asymbol *bfdsym; | |
480 | elf_symbol_type *elfsym; | |
481 | ||
482 | do | |
483 | { | |
6e8bd58f | 484 | symbolP = get_sym_from_input_line_and_check (); |
fa306131 | 485 | |
2e13b764 NC |
486 | bfdsym = symbol_get_bfdsym (symbolP); |
487 | elfsym = elf_symbol_from (bfd_asymbol_bfd (bfdsym), bfdsym); | |
fa306131 | 488 | |
9c2799c2 | 489 | gas_assert (elfsym); |
fa306131 | 490 | |
20e420c2 RH |
491 | elfsym->internal_elf_sym.st_other &= ~3; |
492 | elfsym->internal_elf_sym.st_other |= visibility; | |
fa306131 | 493 | |
6e8bd58f | 494 | c = *input_line_pointer; |
2e13b764 NC |
495 | if (c == ',') |
496 | { | |
497 | input_line_pointer ++; | |
fa306131 | 498 | |
2e13b764 | 499 | SKIP_WHITESPACE (); |
fa306131 | 500 | |
2e13b764 NC |
501 | if (*input_line_pointer == '\n') |
502 | c = '\n'; | |
503 | } | |
504 | } | |
505 | while (c == ','); | |
fa306131 | 506 | |
2e13b764 NC |
507 | demand_empty_rest_of_line (); |
508 | } | |
509 | ||
252b5132 RH |
510 | static segT previous_section; |
511 | static int previous_subsection; | |
512 | ||
9de8d8f1 RH |
513 | struct section_stack |
514 | { | |
515 | struct section_stack *next; | |
516 | segT seg, prev_seg; | |
517 | int subseg, prev_subseg; | |
518 | }; | |
519 | ||
520 | static struct section_stack *section_stack; | |
521 | ||
fafe6678 | 522 | static bfd_boolean |
86654c12 L |
523 | get_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *inf) |
524 | { | |
1e9cc1c2 | 525 | const char *gname = (const char *) inf; |
86654c12 | 526 | const char *group_name = elf_group_name (sec); |
01fb1836 | 527 | |
fafe6678 | 528 | return (group_name == gname |
86654c12 | 529 | || (group_name != NULL |
fafe6678 L |
530 | && gname != NULL |
531 | && strcmp (group_name, gname) == 0)); | |
86654c12 L |
532 | } |
533 | ||
252b5132 RH |
534 | /* Handle the .section pseudo-op. This code supports two different |
535 | syntaxes. | |
536 | ||
537 | The first is found on Solaris, and looks like | |
538 | .section ".sec1",#alloc,#execinstr,#write | |
539 | Here the names after '#' are the SHF_* flags to turn on for the | |
540 | section. I'm not sure how it determines the SHT_* type (BFD | |
541 | doesn't really give us control over the type, anyhow). | |
542 | ||
543 | The second format is found on UnixWare, and probably most SVR4 | |
544 | machines, and looks like | |
545 | .section .sec1,"a",@progbits | |
546 | The quoted string may contain any combination of a, w, x, and | |
547 | represents the SHF_* flags to turn on for the section. The string | |
548 | beginning with '@' can be progbits or nobits. There should be | |
549 | other possibilities, but I don't know what they are. In any case, | |
550 | BFD doesn't really let us set the section type. */ | |
551 | ||
cca86cc8 | 552 | void |
dbe2df79 | 553 | obj_elf_change_section (const char *name, |
9fb71ee4 | 554 | unsigned int type, |
01e1a5bc | 555 | bfd_vma attr, |
dbe2df79 AM |
556 | int entsize, |
557 | const char *group_name, | |
558 | int linkonce, | |
559 | int push) | |
252b5132 | 560 | { |
fafe6678 | 561 | asection *old_sec; |
252b5132 | 562 | segT sec; |
742f45cf | 563 | flagword flags; |
551b43fd | 564 | const struct elf_backend_data *bed; |
f61e8019 | 565 | const struct bfd_elf_special_section *ssect; |
252b5132 RH |
566 | |
567 | #ifdef md_flush_pending_output | |
568 | md_flush_pending_output (); | |
569 | #endif | |
570 | ||
9de8d8f1 RH |
571 | /* Switch to the section, creating it if necessary. */ |
572 | if (push) | |
573 | { | |
574 | struct section_stack *elt; | |
325801bd | 575 | elt = XNEW (struct section_stack); |
9de8d8f1 RH |
576 | elt->next = section_stack; |
577 | elt->seg = now_seg; | |
578 | elt->prev_seg = previous_section; | |
579 | elt->subseg = now_subseg; | |
580 | elt->prev_subseg = previous_subsection; | |
581 | section_stack = elt; | |
582 | } | |
583 | previous_section = now_seg; | |
584 | previous_subsection = now_subseg; | |
585 | ||
fafe6678 L |
586 | old_sec = bfd_get_section_by_name_if (stdoutput, name, get_section, |
587 | (void *) group_name); | |
588 | if (old_sec) | |
86654c12 | 589 | { |
fafe6678 | 590 | sec = old_sec; |
86654c12 L |
591 | subseg_set (sec, 0); |
592 | } | |
593 | else | |
594 | sec = subseg_force_new (name, 0); | |
595 | ||
551b43fd AM |
596 | bed = get_elf_backend_data (stdoutput); |
597 | ssect = (*bed->get_sec_type_attr) (stdoutput, sec); | |
9de8d8f1 | 598 | |
f61e8019 | 599 | if (ssect != NULL) |
2f89ff8d | 600 | { |
ea8f8eab L |
601 | bfd_boolean override = FALSE; |
602 | ||
2f89ff8d | 603 | if (type == SHT_NULL) |
f61e8019 AM |
604 | type = ssect->type; |
605 | else if (type != ssect->type) | |
2f89ff8d | 606 | { |
fafe6678 | 607 | if (old_sec == NULL |
23ddb850 | 608 | /* Some older versions of gcc will emit |
7ed1d346 | 609 | |
2f89ff8d | 610 | .section .init_array,"aw",@progbits |
7ed1d346 | 611 | |
2f89ff8d | 612 | for __attribute__ ((section (".init_array"))). |
3b22753a | 613 | "@progbits" is incorrect. Also for x86-64 large bss |
23ddb850 | 614 | sections, some older versions of gcc will emit |
3b22753a L |
615 | |
616 | .section .lbss,"aw",@progbits | |
617 | ||
2f89ff8d | 618 | "@progbits" is incorrect. */ |
3b22753a L |
619 | #ifdef TC_I386 |
620 | && (bed->s->arch_size != 64 | |
621 | || !(ssect->attr & SHF_X86_64_LARGE)) | |
622 | #endif | |
f61e8019 AM |
623 | && ssect->type != SHT_INIT_ARRAY |
624 | && ssect->type != SHT_FINI_ARRAY | |
625 | && ssect->type != SHT_PREINIT_ARRAY) | |
2f89ff8d L |
626 | { |
627 | /* We allow to specify any type for a .note section. */ | |
9fb71ee4 NC |
628 | if (ssect->type != SHT_NOTE |
629 | /* Processor and application defined types are allowed too. */ | |
630 | && type < SHT_LOPROC) | |
2f89ff8d L |
631 | as_warn (_("setting incorrect section type for %s"), |
632 | name); | |
633 | } | |
634 | else | |
635 | { | |
636 | as_warn (_("ignoring incorrect section type for %s"), | |
742f45cf | 637 | name); |
f61e8019 | 638 | type = ssect->type; |
2f89ff8d L |
639 | } |
640 | } | |
641 | ||
9fb71ee4 NC |
642 | if (old_sec == NULL && ((attr & ~(SHF_MASKOS | SHF_MASKPROC)) |
643 | & ~ssect->attr) != 0) | |
2f89ff8d L |
644 | { |
645 | /* As a GNU extension, we permit a .note section to be | |
f61e8019 | 646 | allocatable. If the linker sees an allocatable .note |
2f89ff8d | 647 | section, it will create a PT_NOTE segment in the output |
92191b29 | 648 | file. We also allow "x" for .note.GNU-stack. */ |
f61e8019 AM |
649 | if (ssect->type == SHT_NOTE |
650 | && (attr == SHF_ALLOC || attr == SHF_EXECINSTR)) | |
651 | ; | |
652 | /* Allow different SHF_MERGE and SHF_STRINGS if we have | |
653 | something like .rodata.str. */ | |
654 | else if (ssect->suffix_length == -2 | |
655 | && name[ssect->prefix_length] == '.' | |
ea8f8eab L |
656 | && (attr |
657 | & ~ssect->attr | |
658 | & ~SHF_MERGE | |
659 | & ~SHF_STRINGS) == 0) | |
f61e8019 | 660 | ; |
ea8f8eab L |
661 | /* .interp, .strtab and .symtab can have SHF_ALLOC. */ |
662 | else if (attr == SHF_ALLOC | |
663 | && (strcmp (name, ".interp") == 0 | |
664 | || strcmp (name, ".strtab") == 0 | |
665 | || strcmp (name, ".symtab") == 0)) | |
666 | override = TRUE; | |
b9f18452 L |
667 | /* .note.GNU-stack can have SHF_EXECINSTR. */ |
668 | else if (attr == SHF_EXECINSTR | |
669 | && strcmp (name, ".note.GNU-stack") == 0) | |
670 | override = TRUE; | |
7f841127 L |
671 | #ifdef TC_ALPHA |
672 | /* A section on Alpha may have SHF_ALPHA_GPREL. */ | |
673 | else if ((attr & ~ssect->attr) == SHF_ALPHA_GPREL) | |
674 | override = TRUE; | |
708e2187 NC |
675 | #endif |
676 | #ifdef TC_RX | |
677 | else if (attr == (SHF_EXECINSTR | SHF_WRITE | SHF_ALLOC) | |
678 | && (ssect->type == SHT_INIT_ARRAY | |
679 | || ssect->type == SHT_FINI_ARRAY | |
680 | || ssect->type == SHT_PREINIT_ARRAY)) | |
681 | /* RX init/fini arrays can and should have the "awx" attributes set. */ | |
682 | ; | |
7f841127 | 683 | #endif |
f61e8019 | 684 | else |
ea8f8eab | 685 | { |
86654c12 L |
686 | if (group_name == NULL) |
687 | as_warn (_("setting incorrect section attributes for %s"), | |
688 | name); | |
ea8f8eab L |
689 | override = TRUE; |
690 | } | |
2f89ff8d | 691 | } |
9fb71ee4 | 692 | |
fafe6678 | 693 | if (!override && old_sec == NULL) |
f61e8019 | 694 | attr |= ssect->attr; |
2f89ff8d | 695 | } |
742f45cf AM |
696 | |
697 | /* Convert ELF type and flags to BFD flags. */ | |
698 | flags = (SEC_RELOC | |
699 | | ((attr & SHF_WRITE) ? 0 : SEC_READONLY) | |
700 | | ((attr & SHF_ALLOC) ? SEC_ALLOC : 0) | |
701 | | (((attr & SHF_ALLOC) && type != SHT_NOBITS) ? SEC_LOAD : 0) | |
f5fa8ca2 JJ |
702 | | ((attr & SHF_EXECINSTR) ? SEC_CODE : 0) |
703 | | ((attr & SHF_MERGE) ? SEC_MERGE : 0) | |
13ae64f3 | 704 | | ((attr & SHF_STRINGS) ? SEC_STRINGS : 0) |
18ae9cc1 | 705 | | ((attr & SHF_EXCLUDE) ? SEC_EXCLUDE: 0) |
13ae64f3 | 706 | | ((attr & SHF_TLS) ? SEC_THREAD_LOCAL : 0)); |
9de8d8f1 | 707 | #ifdef md_elf_section_flags |
742f45cf | 708 | flags = md_elf_section_flags (flags, attr, type); |
9de8d8f1 RH |
709 | #endif |
710 | ||
86654c12 L |
711 | if (linkonce) |
712 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
713 | ||
fafe6678 | 714 | if (old_sec == NULL) |
742f45cf AM |
715 | { |
716 | symbolS *secsym; | |
717 | ||
94be91de JB |
718 | if (type == SHT_NULL) |
719 | type = bfd_elf_get_default_section_type (flags); | |
7a6d0b32 JB |
720 | elf_section_type (sec) = type; |
721 | elf_section_flags (sec) = attr; | |
722 | ||
9de8d8f1 RH |
723 | /* Prevent SEC_HAS_CONTENTS from being inadvertently set. */ |
724 | if (type == SHT_NOBITS) | |
13c56984 | 725 | seg_info (sec)->bss = 1; |
9de8d8f1 RH |
726 | |
727 | bfd_set_section_flags (stdoutput, sec, flags); | |
f5fa8ca2 JJ |
728 | if (flags & SEC_MERGE) |
729 | sec->entsize = entsize; | |
aa1f4858 | 730 | elf_group_name (sec) = group_name; |
9de8d8f1 RH |
731 | |
732 | /* Add a symbol for this section to the symbol table. */ | |
733 | secsym = symbol_find (name); | |
734 | if (secsym != NULL) | |
735 | symbol_set_bfdsym (secsym, sec->symbol); | |
736 | else | |
13c56984 | 737 | symbol_table_insert (section_symbol (sec)); |
9de8d8f1 | 738 | } |
7a6d0b32 | 739 | else |
742f45cf | 740 | { |
7a6d0b32 JB |
741 | if (type != SHT_NULL |
742 | && (unsigned) type != elf_section_type (old_sec)) | |
743 | as_warn (_("ignoring changed section type for %s"), name); | |
744 | ||
745 | if (attr != 0) | |
746 | { | |
747 | /* If section attributes are specified the second time we see a | |
748 | particular section, then check that they are the same as we | |
749 | saw the first time. */ | |
750 | if (((old_sec->flags ^ flags) | |
751 | & (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE | |
752 | | SEC_EXCLUDE | SEC_SORT_ENTRIES | SEC_MERGE | SEC_STRINGS | |
753 | | SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD | |
754 | | SEC_THREAD_LOCAL))) | |
755 | as_warn (_("ignoring changed section attributes for %s"), name); | |
9fb71ee4 NC |
756 | else |
757 | /* FIXME: Maybe we should consider removing a previously set | |
758 | processor or application specific attribute as suspicious ? */ | |
759 | elf_section_flags (sec) = attr; | |
760 | ||
7a6d0b32 JB |
761 | if ((flags & SEC_MERGE) && old_sec->entsize != (unsigned) entsize) |
762 | as_warn (_("ignoring changed section entity size for %s"), name); | |
763 | } | |
742f45cf | 764 | } |
9de8d8f1 RH |
765 | |
766 | #ifdef md_elf_section_change_hook | |
742f45cf | 767 | md_elf_section_change_hook (); |
9de8d8f1 RH |
768 | #endif |
769 | } | |
770 | ||
01e1a5bc | 771 | static bfd_vma |
f6616a06 | 772 | obj_elf_parse_section_letters (char *str, size_t len, bfd_boolean *is_clone) |
9de8d8f1 | 773 | { |
01e1a5bc | 774 | bfd_vma attr = 0; |
f6616a06 | 775 | *is_clone = FALSE; |
9de8d8f1 RH |
776 | |
777 | while (len > 0) | |
778 | { | |
779 | switch (*str) | |
780 | { | |
781 | case 'a': | |
782 | attr |= SHF_ALLOC; | |
783 | break; | |
18ae9cc1 L |
784 | case 'e': |
785 | attr |= SHF_EXCLUDE; | |
786 | break; | |
9de8d8f1 RH |
787 | case 'w': |
788 | attr |= SHF_WRITE; | |
789 | break; | |
790 | case 'x': | |
791 | attr |= SHF_EXECINSTR; | |
792 | break; | |
9469ddf0 | 793 | case 'M': |
f5fa8ca2 JJ |
794 | attr |= SHF_MERGE; |
795 | break; | |
9469ddf0 | 796 | case 'S': |
f5fa8ca2 JJ |
797 | attr |= SHF_STRINGS; |
798 | break; | |
060adf0e AM |
799 | case 'G': |
800 | attr |= SHF_GROUP; | |
801 | break; | |
13ae64f3 JJ |
802 | case 'T': |
803 | attr |= SHF_TLS; | |
804 | break; | |
01642c12 | 805 | case '?': |
f6616a06 | 806 | *is_clone = TRUE; |
01642c12 | 807 | break; |
34105363 L |
808 | /* Compatibility. */ |
809 | case 'm': | |
810 | if (*(str - 1) == 'a') | |
811 | { | |
812 | attr |= SHF_MERGE; | |
813 | if (len > 1 && str[1] == 's') | |
814 | { | |
815 | attr |= SHF_STRINGS; | |
816 | str++, len--; | |
817 | } | |
818 | break; | |
819 | } | |
1a0670f3 | 820 | /* Fall through. */ |
9de8d8f1 RH |
821 | default: |
822 | { | |
6d4af3c2 AM |
823 | const char *bad_msg = _("unrecognized .section attribute:" |
824 | " want a,e,w,x,M,S,G,T or number"); | |
9de8d8f1 | 825 | #ifdef md_elf_section_letter |
01e1a5bc | 826 | bfd_vma md_attr = md_elf_section_letter (*str, &bad_msg); |
8f3bae45 | 827 | if (md_attr != (bfd_vma) -1) |
9de8d8f1 RH |
828 | attr |= md_attr; |
829 | else | |
830 | #endif | |
9fb71ee4 NC |
831 | if (ISDIGIT (*str)) |
832 | { | |
833 | char * end; | |
834 | ||
835 | attr |= strtoul (str, & end, 0); | |
836 | /* Update str and len, allowing for the fact that | |
837 | we will execute str++ and len-- below. */ | |
838 | end --; | |
839 | len -= (end - str); | |
840 | str = end; | |
841 | } | |
842 | else | |
843 | as_fatal ("%s", bad_msg); | |
9de8d8f1 RH |
844 | } |
845 | break; | |
846 | } | |
847 | str++, len--; | |
848 | } | |
849 | ||
850 | return attr; | |
851 | } | |
852 | ||
8d28c9d7 | 853 | static int |
44bf2362 | 854 | obj_elf_section_type (char *str, size_t len, bfd_boolean warn) |
9de8d8f1 RH |
855 | { |
856 | if (len == 8 && strncmp (str, "progbits", 8) == 0) | |
857 | return SHT_PROGBITS; | |
858 | if (len == 6 && strncmp (str, "nobits", 6) == 0) | |
859 | return SHT_NOBITS; | |
34f70875 L |
860 | if (len == 4 && strncmp (str, "note", 4) == 0) |
861 | return SHT_NOTE; | |
10b016c2 PB |
862 | if (len == 10 && strncmp (str, "init_array", 10) == 0) |
863 | return SHT_INIT_ARRAY; | |
864 | if (len == 10 && strncmp (str, "fini_array", 10) == 0) | |
865 | return SHT_FINI_ARRAY; | |
866 | if (len == 13 && strncmp (str, "preinit_array", 13) == 0) | |
867 | return SHT_PREINIT_ARRAY; | |
9de8d8f1 RH |
868 | |
869 | #ifdef md_elf_section_type | |
870 | { | |
871 | int md_type = md_elf_section_type (str, len); | |
872 | if (md_type >= 0) | |
873 | return md_type; | |
874 | } | |
875 | #endif | |
876 | ||
9fb71ee4 NC |
877 | if (ISDIGIT (*str)) |
878 | { | |
879 | char * end; | |
880 | int type = strtoul (str, & end, 0); | |
881 | ||
882 | if (warn && (size_t) (end - str) != len) | |
883 | as_warn (_("extraneous characters at end of numeric section type")); | |
884 | ||
885 | return type; | |
886 | } | |
887 | ||
44bf2362 NC |
888 | if (warn) |
889 | as_warn (_("unrecognized section type")); | |
890 | return 0; | |
891 | } | |
892 | ||
01e1a5bc | 893 | static bfd_vma |
44bf2362 NC |
894 | obj_elf_section_word (char *str, size_t len, int *type) |
895 | { | |
896 | int ret; | |
897 | ||
898 | if (len == 5 && strncmp (str, "write", 5) == 0) | |
899 | return SHF_WRITE; | |
900 | if (len == 5 && strncmp (str, "alloc", 5) == 0) | |
901 | return SHF_ALLOC; | |
902 | if (len == 9 && strncmp (str, "execinstr", 9) == 0) | |
903 | return SHF_EXECINSTR; | |
18ae9cc1 L |
904 | if (len == 7 && strncmp (str, "exclude", 7) == 0) |
905 | return SHF_EXCLUDE; | |
44bf2362 NC |
906 | if (len == 3 && strncmp (str, "tls", 3) == 0) |
907 | return SHF_TLS; | |
908 | ||
909 | #ifdef md_elf_section_word | |
910 | { | |
01e1a5bc NC |
911 | bfd_vma md_attr = md_elf_section_word (str, len); |
912 | if (md_attr > 0) | |
44bf2362 NC |
913 | return md_attr; |
914 | } | |
915 | #endif | |
916 | ||
917 | ret = obj_elf_section_type (str, len, FALSE); | |
918 | if (ret != 0) | |
919 | *type = ret; | |
920 | else | |
921 | as_warn (_("unrecognized section attribute")); | |
922 | ||
9de8d8f1 RH |
923 | return 0; |
924 | } | |
925 | ||
6ce8b369 | 926 | /* Get name of section. */ |
82b8a785 | 927 | const char * |
dbe2df79 | 928 | obj_elf_section_name (void) |
6ce8b369 AM |
929 | { |
930 | char *name; | |
931 | ||
932 | SKIP_WHITESPACE (); | |
933 | if (*input_line_pointer == '"') | |
934 | { | |
935 | int dummy; | |
936 | ||
937 | name = demand_copy_C_string (&dummy); | |
938 | if (name == NULL) | |
939 | { | |
940 | ignore_rest_of_line (); | |
941 | return NULL; | |
942 | } | |
943 | } | |
944 | else | |
945 | { | |
946 | char *end = input_line_pointer; | |
947 | ||
948 | while (0 == strchr ("\n\t,; ", *end)) | |
949 | end++; | |
950 | if (end == input_line_pointer) | |
951 | { | |
c95b35a9 | 952 | as_bad (_("missing name")); |
6ce8b369 AM |
953 | ignore_rest_of_line (); |
954 | return NULL; | |
955 | } | |
956 | ||
29a2809e | 957 | name = xmemdup0 (input_line_pointer, end - input_line_pointer); |
451133ce NP |
958 | |
959 | while (flag_sectname_subst) | |
960 | { | |
961 | char *subst = strchr (name, '%'); | |
962 | if (subst && subst[1] == 'S') | |
963 | { | |
964 | int oldlen = strlen (name); | |
965 | int substlen = strlen (now_seg->name); | |
966 | int newlen = oldlen - 2 + substlen; | |
add39d23 | 967 | char *newname = XNEWVEC (char, newlen + 1); |
451133ce NP |
968 | int headlen = subst - name; |
969 | memcpy (newname, name, headlen); | |
970 | strcpy (newname + headlen, now_seg->name); | |
971 | strcat (newname + headlen, subst + 2); | |
972 | xfree (name); | |
973 | name = newname; | |
974 | } | |
975 | else | |
976 | break; | |
977 | } | |
978 | ||
612d7b83 L |
979 | #ifdef tc_canonicalize_section_name |
980 | name = tc_canonicalize_section_name (name); | |
981 | #endif | |
6ce8b369 AM |
982 | input_line_pointer = end; |
983 | } | |
984 | SKIP_WHITESPACE (); | |
985 | return name; | |
986 | } | |
987 | ||
9de8d8f1 | 988 | void |
dbe2df79 | 989 | obj_elf_section (int push) |
9de8d8f1 | 990 | { |
82b8a785 TS |
991 | const char *name, *group_name; |
992 | char *beg; | |
01e1a5bc NC |
993 | int type, dummy; |
994 | bfd_vma attr; | |
f5fa8ca2 | 995 | int entsize; |
d2dab548 | 996 | int linkonce; |
6f932bce | 997 | subsegT new_subsection = -1; |
9de8d8f1 | 998 | |
5b93d8bb | 999 | #ifndef TC_I370 |
252b5132 RH |
1000 | if (flag_mri) |
1001 | { | |
1002 | char mri_type; | |
1003 | ||
9de8d8f1 | 1004 | #ifdef md_flush_pending_output |
60bcf0fa | 1005 | md_flush_pending_output (); |
9de8d8f1 RH |
1006 | #endif |
1007 | ||
252b5132 RH |
1008 | previous_section = now_seg; |
1009 | previous_subsection = now_subseg; | |
1010 | ||
1011 | s_mri_sect (&mri_type); | |
1012 | ||
1013 | #ifdef md_elf_section_change_hook | |
1014 | md_elf_section_change_hook (); | |
1015 | #endif | |
1016 | ||
1017 | return; | |
1018 | } | |
5b93d8bb | 1019 | #endif /* ! defined (TC_I370) */ |
252b5132 | 1020 | |
6ce8b369 AM |
1021 | name = obj_elf_section_name (); |
1022 | if (name == NULL) | |
1023 | return; | |
252b5132 RH |
1024 | type = SHT_NULL; |
1025 | attr = 0; | |
aa1f4858 | 1026 | group_name = NULL; |
f5fa8ca2 | 1027 | entsize = 0; |
d2dab548 | 1028 | linkonce = 0; |
252b5132 RH |
1029 | |
1030 | if (*input_line_pointer == ',') | |
1031 | { | |
1032 | /* Skip the comma. */ | |
1033 | ++input_line_pointer; | |
252b5132 RH |
1034 | SKIP_WHITESPACE (); |
1035 | ||
9cfc3331 | 1036 | if (push && ISDIGIT (*input_line_pointer)) |
6f932bce | 1037 | { |
9cfc3331 | 1038 | /* .pushsection has an optional subsection. */ |
6f932bce | 1039 | new_subsection = (subsegT) get_absolute_expression (); |
9cfc3331 L |
1040 | |
1041 | SKIP_WHITESPACE (); | |
1042 | ||
1043 | /* Stop if we don't see a comma. */ | |
1044 | if (*input_line_pointer != ',') | |
1045 | goto done; | |
1046 | ||
1047 | /* Skip the comma. */ | |
1048 | ++input_line_pointer; | |
1049 | SKIP_WHITESPACE (); | |
6f932bce | 1050 | } |
9cfc3331 L |
1051 | |
1052 | if (*input_line_pointer == '"') | |
252b5132 | 1053 | { |
f6616a06 | 1054 | bfd_boolean is_clone; |
01642c12 | 1055 | |
9de8d8f1 RH |
1056 | beg = demand_copy_C_string (&dummy); |
1057 | if (beg == NULL) | |
252b5132 | 1058 | { |
9de8d8f1 RH |
1059 | ignore_rest_of_line (); |
1060 | return; | |
252b5132 | 1061 | } |
f6616a06 | 1062 | attr |= obj_elf_parse_section_letters (beg, strlen (beg), &is_clone); |
252b5132 RH |
1063 | |
1064 | SKIP_WHITESPACE (); | |
1065 | if (*input_line_pointer == ',') | |
1066 | { | |
9de8d8f1 | 1067 | char c; |
060adf0e AM |
1068 | char *save = input_line_pointer; |
1069 | ||
252b5132 RH |
1070 | ++input_line_pointer; |
1071 | SKIP_WHITESPACE (); | |
9de8d8f1 RH |
1072 | c = *input_line_pointer; |
1073 | if (c == '"') | |
252b5132 | 1074 | { |
9de8d8f1 RH |
1075 | beg = demand_copy_C_string (&dummy); |
1076 | if (beg == NULL) | |
252b5132 | 1077 | { |
9de8d8f1 RH |
1078 | ignore_rest_of_line (); |
1079 | return; | |
252b5132 | 1080 | } |
44bf2362 | 1081 | type = obj_elf_section_type (beg, strlen (beg), TRUE); |
9de8d8f1 RH |
1082 | } |
1083 | else if (c == '@' || c == '%') | |
1084 | { | |
d02603dc | 1085 | ++input_line_pointer; |
9fb71ee4 NC |
1086 | |
1087 | if (ISDIGIT (* input_line_pointer)) | |
1088 | { | |
1089 | type = strtoul (input_line_pointer, & input_line_pointer, 0); | |
1090 | } | |
1091 | else | |
1092 | { | |
1093 | c = get_symbol_name (& beg); | |
1094 | (void) restore_line_pointer (c); | |
1095 | type = obj_elf_section_type (beg, input_line_pointer - beg, TRUE); | |
1096 | } | |
252b5132 | 1097 | } |
060adf0e AM |
1098 | else |
1099 | input_line_pointer = save; | |
252b5132 | 1100 | } |
f5fa8ca2 JJ |
1101 | |
1102 | SKIP_WHITESPACE (); | |
6ce8b369 | 1103 | if ((attr & SHF_MERGE) != 0 && *input_line_pointer == ',') |
f5fa8ca2 JJ |
1104 | { |
1105 | ++input_line_pointer; | |
1106 | SKIP_WHITESPACE (); | |
1107 | entsize = get_absolute_expression (); | |
6ce8b369 | 1108 | SKIP_WHITESPACE (); |
f5fa8ca2 JJ |
1109 | if (entsize < 0) |
1110 | { | |
6ce8b369 | 1111 | as_warn (_("invalid merge entity size")); |
f5fa8ca2 JJ |
1112 | attr &= ~SHF_MERGE; |
1113 | entsize = 0; | |
1114 | } | |
1115 | } | |
6ce8b369 AM |
1116 | else if ((attr & SHF_MERGE) != 0) |
1117 | { | |
1118 | as_warn (_("entity size for SHF_MERGE not specified")); | |
1119 | attr &= ~SHF_MERGE; | |
1120 | } | |
060adf0e | 1121 | |
f6616a06 | 1122 | if ((attr & SHF_GROUP) != 0 && is_clone) |
01642c12 RM |
1123 | { |
1124 | as_warn (_("? section flag ignored with G present")); | |
f6616a06 | 1125 | is_clone = FALSE; |
01642c12 | 1126 | } |
060adf0e AM |
1127 | if ((attr & SHF_GROUP) != 0 && *input_line_pointer == ',') |
1128 | { | |
1129 | ++input_line_pointer; | |
aa1f4858 AM |
1130 | group_name = obj_elf_section_name (); |
1131 | if (group_name == NULL) | |
060adf0e | 1132 | attr &= ~SHF_GROUP; |
59365e19 | 1133 | else if (*input_line_pointer == ',') |
d2dab548 | 1134 | { |
59365e19 AM |
1135 | ++input_line_pointer; |
1136 | SKIP_WHITESPACE (); | |
1137 | if (strncmp (input_line_pointer, "comdat", 6) == 0) | |
1138 | { | |
1139 | input_line_pointer += 6; | |
1140 | linkonce = 1; | |
1141 | } | |
d2dab548 AM |
1142 | } |
1143 | else if (strncmp (name, ".gnu.linkonce", 13) == 0) | |
1144 | linkonce = 1; | |
060adf0e AM |
1145 | } |
1146 | else if ((attr & SHF_GROUP) != 0) | |
1147 | { | |
1148 | as_warn (_("group name for SHF_GROUP not specified")); | |
1149 | attr &= ~SHF_GROUP; | |
1150 | } | |
01642c12 | 1151 | |
f6616a06 | 1152 | if (is_clone) |
01642c12 RM |
1153 | { |
1154 | const char *now_group = elf_group_name (now_seg); | |
1155 | if (now_group != NULL) | |
1156 | { | |
1157 | group_name = xstrdup (now_group); | |
1158 | linkonce = (now_seg->flags & SEC_LINK_ONCE) != 0; | |
1159 | } | |
1160 | } | |
252b5132 RH |
1161 | } |
1162 | else | |
1163 | { | |
1164 | do | |
1165 | { | |
9de8d8f1 RH |
1166 | char c; |
1167 | ||
252b5132 RH |
1168 | SKIP_WHITESPACE (); |
1169 | if (*input_line_pointer != '#') | |
1170 | { | |
c95b35a9 | 1171 | as_bad (_("character following name is not '#'")); |
252b5132 RH |
1172 | ignore_rest_of_line (); |
1173 | return; | |
1174 | } | |
d02603dc NC |
1175 | ++input_line_pointer; |
1176 | c = get_symbol_name (& beg); | |
1177 | (void) restore_line_pointer (c); | |
9de8d8f1 | 1178 | |
44bf2362 | 1179 | attr |= obj_elf_section_word (beg, input_line_pointer - beg, & type); |
9de8d8f1 | 1180 | |
252b5132 RH |
1181 | SKIP_WHITESPACE (); |
1182 | } | |
1183 | while (*input_line_pointer++ == ','); | |
1184 | --input_line_pointer; | |
1185 | } | |
1186 | } | |
1187 | ||
9cfc3331 | 1188 | done: |
252b5132 | 1189 | demand_empty_rest_of_line (); |
9de8d8f1 | 1190 | |
d2dab548 | 1191 | obj_elf_change_section (name, type, attr, entsize, group_name, linkonce, push); |
6f932bce NC |
1192 | |
1193 | if (push && new_subsection != -1) | |
1194 | subseg_set (now_seg, new_subsection); | |
252b5132 RH |
1195 | } |
1196 | ||
1197 | /* Change to the .data section. */ | |
1198 | ||
16b93d88 | 1199 | void |
dbe2df79 | 1200 | obj_elf_data (int i) |
252b5132 RH |
1201 | { |
1202 | #ifdef md_flush_pending_output | |
1203 | md_flush_pending_output (); | |
1204 | #endif | |
1205 | ||
1206 | previous_section = now_seg; | |
1207 | previous_subsection = now_subseg; | |
1208 | s_data (i); | |
1209 | ||
1210 | #ifdef md_elf_section_change_hook | |
1211 | md_elf_section_change_hook (); | |
1212 | #endif | |
1213 | } | |
1214 | ||
1215 | /* Change to the .text section. */ | |
1216 | ||
16b93d88 | 1217 | void |
dbe2df79 | 1218 | obj_elf_text (int i) |
252b5132 RH |
1219 | { |
1220 | #ifdef md_flush_pending_output | |
1221 | md_flush_pending_output (); | |
1222 | #endif | |
1223 | ||
1224 | previous_section = now_seg; | |
1225 | previous_subsection = now_subseg; | |
1226 | s_text (i); | |
1227 | ||
1228 | #ifdef md_elf_section_change_hook | |
1229 | md_elf_section_change_hook (); | |
1230 | #endif | |
1231 | } | |
1232 | ||
8fe53b44 JB |
1233 | /* Change to the *ABS* section. */ |
1234 | ||
1235 | void | |
1236 | obj_elf_struct (int i) | |
1237 | { | |
1238 | #ifdef md_flush_pending_output | |
1239 | md_flush_pending_output (); | |
1240 | #endif | |
1241 | ||
1242 | previous_section = now_seg; | |
1243 | previous_subsection = now_subseg; | |
1244 | s_struct (i); | |
1245 | ||
1246 | #ifdef md_elf_section_change_hook | |
1247 | md_elf_section_change_hook (); | |
1248 | #endif | |
1249 | } | |
1250 | ||
252b5132 | 1251 | static void |
dbe2df79 | 1252 | obj_elf_subsection (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1253 | { |
6f932bce | 1254 | int temp; |
252b5132 RH |
1255 | |
1256 | #ifdef md_flush_pending_output | |
1257 | md_flush_pending_output (); | |
1258 | #endif | |
1259 | ||
1260 | previous_section = now_seg; | |
1261 | previous_subsection = now_subseg; | |
1262 | ||
1263 | temp = get_absolute_expression (); | |
1264 | subseg_set (now_seg, (subsegT) temp); | |
1265 | demand_empty_rest_of_line (); | |
1266 | ||
1267 | #ifdef md_elf_section_change_hook | |
1268 | md_elf_section_change_hook (); | |
1269 | #endif | |
1270 | } | |
1271 | ||
1272 | /* This can be called from the processor backends if they change | |
1273 | sections. */ | |
1274 | ||
1275 | void | |
dbe2df79 | 1276 | obj_elf_section_change_hook (void) |
252b5132 RH |
1277 | { |
1278 | previous_section = now_seg; | |
1279 | previous_subsection = now_subseg; | |
1280 | } | |
1281 | ||
1282 | void | |
dbe2df79 | 1283 | obj_elf_previous (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1284 | { |
9de8d8f1 RH |
1285 | segT new_section; |
1286 | int new_subsection; | |
1287 | ||
252b5132 RH |
1288 | if (previous_section == 0) |
1289 | { | |
6ce8b369 | 1290 | as_warn (_(".previous without corresponding .section; ignored")); |
252b5132 RH |
1291 | return; |
1292 | } | |
1293 | ||
1294 | #ifdef md_flush_pending_output | |
1295 | md_flush_pending_output (); | |
1296 | #endif | |
1297 | ||
9de8d8f1 RH |
1298 | new_section = previous_section; |
1299 | new_subsection = previous_subsection; | |
1300 | previous_section = now_seg; | |
1301 | previous_subsection = now_subseg; | |
1302 | subseg_set (new_section, new_subsection); | |
1303 | ||
1304 | #ifdef md_elf_section_change_hook | |
1305 | md_elf_section_change_hook (); | |
1306 | #endif | |
1307 | } | |
1308 | ||
1309 | static void | |
dbe2df79 | 1310 | obj_elf_popsection (int xxx ATTRIBUTE_UNUSED) |
9de8d8f1 RH |
1311 | { |
1312 | struct section_stack *top = section_stack; | |
1313 | ||
1314 | if (top == NULL) | |
1315 | { | |
6ce8b369 | 1316 | as_warn (_(".popsection without corresponding .pushsection; ignored")); |
9de8d8f1 RH |
1317 | return; |
1318 | } | |
1319 | ||
1320 | #ifdef md_flush_pending_output | |
1321 | md_flush_pending_output (); | |
1322 | #endif | |
1323 | ||
1324 | section_stack = top->next; | |
1325 | previous_section = top->prev_seg; | |
1326 | previous_subsection = top->prev_subseg; | |
1327 | subseg_set (top->seg, top->subseg); | |
1328 | free (top); | |
252b5132 RH |
1329 | |
1330 | #ifdef md_elf_section_change_hook | |
1331 | md_elf_section_change_hook (); | |
1332 | #endif | |
1333 | } | |
1334 | ||
1335 | static void | |
dbe2df79 | 1336 | obj_elf_line (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1337 | { |
1338 | /* Assume delimiter is part of expression. BSD4.2 as fails with | |
bf514e21 | 1339 | delightful bug, so we are not being incompatible here. */ |
dbe2df79 | 1340 | new_logical_line (NULL, get_absolute_expression ()); |
252b5132 RH |
1341 | demand_empty_rest_of_line (); |
1342 | } | |
1343 | ||
1344 | /* This handles the .symver pseudo-op, which is used to specify a | |
1345 | symbol version. The syntax is ``.symver NAME,SYMVERNAME''. | |
1346 | SYMVERNAME may contain ELF_VER_CHR ('@') characters. This | |
1347 | pseudo-op causes the assembler to emit a symbol named SYMVERNAME | |
1348 | with the same value as the symbol NAME. */ | |
1349 | ||
1350 | static void | |
dbe2df79 | 1351 | obj_elf_symver (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1352 | { |
1353 | char *name; | |
1354 | char c; | |
468cced8 | 1355 | char old_lexat; |
252b5132 RH |
1356 | symbolS *sym; |
1357 | ||
6e8bd58f | 1358 | sym = get_sym_from_input_line_and_check (); |
252b5132 | 1359 | |
252b5132 RH |
1360 | if (*input_line_pointer != ',') |
1361 | { | |
1362 | as_bad (_("expected comma after name in .symver")); | |
1363 | ignore_rest_of_line (); | |
1364 | return; | |
1365 | } | |
1366 | ||
1367 | ++input_line_pointer; | |
eba874d8 | 1368 | SKIP_WHITESPACE (); |
468cced8 AM |
1369 | |
1370 | /* Temporarily include '@' in symbol names. */ | |
1371 | old_lexat = lex_type[(unsigned char) '@']; | |
1372 | lex_type[(unsigned char) '@'] |= LEX_NAME; | |
d02603dc | 1373 | c = get_symbol_name (& name); |
468cced8 | 1374 | lex_type[(unsigned char) '@'] = old_lexat; |
252b5132 | 1375 | |
339681c0 L |
1376 | if (symbol_get_obj (sym)->versioned_name == NULL) |
1377 | { | |
1378 | symbol_get_obj (sym)->versioned_name = xstrdup (name); | |
252b5132 | 1379 | |
d02603dc | 1380 | (void) restore_line_pointer (c); |
252b5132 | 1381 | |
6f620856 L |
1382 | if (strchr (symbol_get_obj (sym)->versioned_name, |
1383 | ELF_VER_CHR) == NULL) | |
339681c0 L |
1384 | { |
1385 | as_bad (_("missing version name in `%s' for symbol `%s'"), | |
1386 | symbol_get_obj (sym)->versioned_name, | |
1387 | S_GET_NAME (sym)); | |
1388 | ignore_rest_of_line (); | |
1389 | return; | |
1390 | } | |
1391 | } | |
1392 | else | |
252b5132 | 1393 | { |
339681c0 L |
1394 | if (strcmp (symbol_get_obj (sym)->versioned_name, name)) |
1395 | { | |
1396 | as_bad (_("multiple versions [`%s'|`%s'] for symbol `%s'"), | |
1397 | name, symbol_get_obj (sym)->versioned_name, | |
1398 | S_GET_NAME (sym)); | |
1399 | ignore_rest_of_line (); | |
1400 | return; | |
1401 | } | |
1402 | ||
d02603dc | 1403 | (void) restore_line_pointer (c); |
252b5132 RH |
1404 | } |
1405 | ||
1406 | demand_empty_rest_of_line (); | |
1407 | } | |
1408 | ||
1409 | /* This handles the .vtable_inherit pseudo-op, which is used to indicate | |
1410 | to the linker the hierarchy in which a particular table resides. The | |
1411 | syntax is ".vtable_inherit CHILDNAME, PARENTNAME". */ | |
1412 | ||
904a31bf | 1413 | struct fix * |
dbe2df79 | 1414 | obj_elf_vtable_inherit (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1415 | { |
1416 | char *cname, *pname; | |
1417 | symbolS *csym, *psym; | |
1418 | char c, bad = 0; | |
1419 | ||
1420 | if (*input_line_pointer == '#') | |
1421 | ++input_line_pointer; | |
1422 | ||
d02603dc | 1423 | c = get_symbol_name (& cname); |
252b5132 RH |
1424 | csym = symbol_find (cname); |
1425 | ||
1426 | /* GCFIXME: should check that we don't have two .vtable_inherits for | |
1427 | the same child symbol. Also, we can currently only do this if the | |
1428 | child symbol is already exists and is placed in a fragment. */ | |
1429 | ||
49309057 | 1430 | if (csym == NULL || symbol_get_frag (csym) == NULL) |
252b5132 | 1431 | { |
bd3ba5d1 | 1432 | as_bad (_("expected `%s' to have already been set for .vtable_inherit"), |
252b5132 RH |
1433 | cname); |
1434 | bad = 1; | |
1435 | } | |
1436 | ||
1437 | *input_line_pointer = c; | |
1438 | ||
d02603dc | 1439 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
1440 | if (*input_line_pointer != ',') |
1441 | { | |
bd3ba5d1 | 1442 | as_bad (_("expected comma after name in .vtable_inherit")); |
252b5132 | 1443 | ignore_rest_of_line (); |
904a31bf | 1444 | return NULL; |
252b5132 RH |
1445 | } |
1446 | ||
1447 | ++input_line_pointer; | |
1448 | SKIP_WHITESPACE (); | |
1449 | ||
1450 | if (*input_line_pointer == '#') | |
1451 | ++input_line_pointer; | |
1452 | ||
1453 | if (input_line_pointer[0] == '0' | |
1454 | && (input_line_pointer[1] == '\0' | |
3882b010 | 1455 | || ISSPACE (input_line_pointer[1]))) |
252b5132 RH |
1456 | { |
1457 | psym = section_symbol (absolute_section); | |
1458 | ++input_line_pointer; | |
1459 | } | |
1460 | else | |
1461 | { | |
d02603dc | 1462 | c = get_symbol_name (& pname); |
252b5132 | 1463 | psym = symbol_find_or_make (pname); |
d02603dc | 1464 | restore_line_pointer (c); |
252b5132 RH |
1465 | } |
1466 | ||
1467 | demand_empty_rest_of_line (); | |
1468 | ||
1469 | if (bad) | |
904a31bf | 1470 | return NULL; |
252b5132 | 1471 | |
9c2799c2 | 1472 | gas_assert (symbol_get_value_expression (csym)->X_op == O_constant); |
904a31bf AM |
1473 | return fix_new (symbol_get_frag (csym), |
1474 | symbol_get_value_expression (csym)->X_add_number, | |
1475 | 0, psym, 0, 0, BFD_RELOC_VTABLE_INHERIT); | |
252b5132 | 1476 | } |
fa306131 | 1477 | |
252b5132 RH |
1478 | /* This handles the .vtable_entry pseudo-op, which is used to indicate |
1479 | to the linker that a vtable slot was used. The syntax is | |
1480 | ".vtable_entry tablename, offset". */ | |
1481 | ||
904a31bf | 1482 | struct fix * |
dbe2df79 | 1483 | obj_elf_vtable_entry (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1484 | { |
252b5132 RH |
1485 | symbolS *sym; |
1486 | offsetT offset; | |
252b5132 RH |
1487 | |
1488 | if (*input_line_pointer == '#') | |
1489 | ++input_line_pointer; | |
1490 | ||
6e8bd58f | 1491 | sym = get_sym_from_input_line_and_check (); |
252b5132 RH |
1492 | if (*input_line_pointer != ',') |
1493 | { | |
bd3ba5d1 | 1494 | as_bad (_("expected comma after name in .vtable_entry")); |
252b5132 | 1495 | ignore_rest_of_line (); |
904a31bf | 1496 | return NULL; |
252b5132 RH |
1497 | } |
1498 | ||
1499 | ++input_line_pointer; | |
1500 | if (*input_line_pointer == '#') | |
1501 | ++input_line_pointer; | |
1502 | ||
1503 | offset = get_absolute_expression (); | |
1504 | ||
252b5132 | 1505 | demand_empty_rest_of_line (); |
904a31bf AM |
1506 | |
1507 | return fix_new (frag_now, frag_now_fix (), 0, sym, offset, 0, | |
1508 | BFD_RELOC_VTABLE_ENTRY); | |
252b5132 RH |
1509 | } |
1510 | ||
0420f52b MR |
1511 | #define skip_whitespace(str) do { if (*(str) == ' ') ++(str); } while (0) |
1512 | ||
1513 | static inline int | |
1514 | skip_past_char (char ** str, char c) | |
1515 | { | |
1516 | if (**str == c) | |
1517 | { | |
1518 | (*str)++; | |
1519 | return 0; | |
1520 | } | |
1521 | else | |
1522 | return -1; | |
1523 | } | |
1524 | #define skip_past_comma(str) skip_past_char (str, ',') | |
1525 | ||
9440a904 RS |
1526 | /* A list of attributes that have been explicitly set by the assembly code. |
1527 | VENDOR is the vendor id, BASE is the tag shifted right by the number | |
1528 | of bits in MASK, and bit N of MASK is set if tag BASE+N has been set. */ | |
1529 | struct recorded_attribute_info { | |
1530 | struct recorded_attribute_info *next; | |
1531 | int vendor; | |
1532 | unsigned int base; | |
1533 | unsigned long mask; | |
1534 | }; | |
1535 | static struct recorded_attribute_info *recorded_attributes; | |
1536 | ||
1537 | /* Record that we have seen an explicit specification of attribute TAG | |
1538 | for vendor VENDOR. */ | |
1539 | ||
1540 | static void | |
1541 | record_attribute (int vendor, unsigned int tag) | |
1542 | { | |
1543 | unsigned int base; | |
1544 | unsigned long mask; | |
1545 | struct recorded_attribute_info *rai; | |
1546 | ||
1547 | base = tag / (8 * sizeof (rai->mask)); | |
1548 | mask = 1UL << (tag % (8 * sizeof (rai->mask))); | |
1549 | for (rai = recorded_attributes; rai; rai = rai->next) | |
1550 | if (rai->vendor == vendor && rai->base == base) | |
1551 | { | |
1552 | rai->mask |= mask; | |
1553 | return; | |
1554 | } | |
1555 | ||
1556 | rai = XNEW (struct recorded_attribute_info); | |
1557 | rai->next = recorded_attributes; | |
1558 | rai->vendor = vendor; | |
1559 | rai->base = base; | |
1560 | rai->mask = mask; | |
1561 | recorded_attributes = rai; | |
1562 | } | |
1563 | ||
1564 | /* Return true if we have seen an explicit specification of attribute TAG | |
1565 | for vendor VENDOR. */ | |
1566 | ||
1567 | bfd_boolean | |
1568 | obj_elf_seen_attribute (int vendor, unsigned int tag) | |
1569 | { | |
1570 | unsigned int base; | |
1571 | unsigned long mask; | |
1572 | struct recorded_attribute_info *rai; | |
1573 | ||
1574 | base = tag / (8 * sizeof (rai->mask)); | |
1575 | mask = 1UL << (tag % (8 * sizeof (rai->mask))); | |
1576 | for (rai = recorded_attributes; rai; rai = rai->next) | |
1577 | if (rai->vendor == vendor && rai->base == base) | |
1578 | return (rai->mask & mask) != 0; | |
1579 | return FALSE; | |
1580 | } | |
1581 | ||
0420f52b MR |
1582 | /* Parse an attribute directive for VENDOR. |
1583 | Returns the attribute number read, or zero on error. */ | |
1584 | ||
1585 | int | |
1586 | obj_elf_vendor_attribute (int vendor) | |
1587 | { | |
1588 | expressionS exp; | |
1589 | int type; | |
1590 | int tag; | |
1591 | unsigned int i = 0; | |
1592 | char *s = NULL; | |
1593 | ||
1594 | /* Read the first number or name. */ | |
1595 | skip_whitespace (input_line_pointer); | |
1596 | s = input_line_pointer; | |
1597 | if (ISDIGIT (*input_line_pointer)) | |
1598 | { | |
1599 | expression (& exp); | |
1600 | if (exp.X_op != O_constant) | |
1601 | goto bad; | |
1602 | tag = exp.X_add_number; | |
1603 | } | |
1604 | else | |
1605 | { | |
1606 | char *name; | |
1607 | ||
1608 | /* A name may contain '_', but no other punctuation. */ | |
1609 | for (; ISALNUM (*input_line_pointer) || *input_line_pointer == '_'; | |
1610 | ++input_line_pointer) | |
1611 | i++; | |
1612 | if (i == 0) | |
1613 | goto bad; | |
1614 | ||
a44e2901 | 1615 | name = xstrndup (s, i); |
0420f52b MR |
1616 | |
1617 | #ifndef CONVERT_SYMBOLIC_ATTRIBUTE | |
1618 | #define CONVERT_SYMBOLIC_ATTRIBUTE(a) -1 | |
1619 | #endif | |
1620 | ||
1621 | tag = CONVERT_SYMBOLIC_ATTRIBUTE (name); | |
1622 | if (tag == -1) | |
1623 | { | |
1624 | as_bad (_("Attribute name not recognised: %s"), name); | |
1625 | ignore_rest_of_line (); | |
e1fa0163 | 1626 | free (name); |
0420f52b MR |
1627 | return 0; |
1628 | } | |
e1fa0163 | 1629 | free (name); |
0420f52b MR |
1630 | } |
1631 | ||
1632 | type = _bfd_elf_obj_attrs_arg_type (stdoutput, vendor, tag); | |
1633 | ||
1634 | if (skip_past_comma (&input_line_pointer) == -1) | |
1635 | goto bad; | |
1636 | if (type & 1) | |
1637 | { | |
1638 | expression (& exp); | |
1639 | if (exp.X_op != O_constant) | |
1640 | { | |
1641 | as_bad (_("expected numeric constant")); | |
1642 | ignore_rest_of_line (); | |
1643 | return 0; | |
1644 | } | |
1645 | i = exp.X_add_number; | |
1646 | } | |
1647 | if ((type & 3) == 3 | |
1648 | && skip_past_comma (&input_line_pointer) == -1) | |
1649 | { | |
1650 | as_bad (_("expected comma")); | |
1651 | ignore_rest_of_line (); | |
1652 | return 0; | |
1653 | } | |
1654 | if (type & 2) | |
1655 | { | |
1656 | int len; | |
1657 | ||
1658 | skip_whitespace (input_line_pointer); | |
1659 | if (*input_line_pointer != '"') | |
1660 | goto bad_string; | |
1661 | s = demand_copy_C_string (&len); | |
1662 | } | |
1663 | ||
9440a904 | 1664 | record_attribute (vendor, tag); |
0420f52b MR |
1665 | switch (type & 3) |
1666 | { | |
1667 | case 3: | |
1668 | bfd_elf_add_obj_attr_int_string (stdoutput, vendor, tag, i, s); | |
1669 | break; | |
1670 | case 2: | |
1671 | bfd_elf_add_obj_attr_string (stdoutput, vendor, tag, s); | |
1672 | break; | |
1673 | case 1: | |
1674 | bfd_elf_add_obj_attr_int (stdoutput, vendor, tag, i); | |
1675 | break; | |
1676 | default: | |
1677 | abort (); | |
1678 | } | |
1679 | ||
1680 | demand_empty_rest_of_line (); | |
1681 | return tag; | |
1682 | bad_string: | |
1683 | as_bad (_("bad string constant")); | |
1684 | ignore_rest_of_line (); | |
1685 | return 0; | |
1686 | bad: | |
1687 | as_bad (_("expected <tag> , <value>")); | |
1688 | ignore_rest_of_line (); | |
1689 | return 0; | |
1690 | } | |
1691 | ||
1692 | /* Parse a .gnu_attribute directive. */ | |
1693 | ||
1694 | static void | |
1695 | obj_elf_gnu_attribute (int ignored ATTRIBUTE_UNUSED) | |
1696 | { | |
1697 | obj_elf_vendor_attribute (OBJ_ATTR_GNU); | |
1698 | } | |
1699 | ||
252b5132 | 1700 | void |
dbe2df79 | 1701 | elf_obj_read_begin_hook (void) |
252b5132 RH |
1702 | { |
1703 | #ifdef NEED_ECOFF_DEBUG | |
1704 | if (ECOFF_DEBUGGING) | |
1705 | ecoff_read_begin_hook (); | |
1706 | #endif | |
1707 | } | |
1708 | ||
1709 | void | |
dbe2df79 | 1710 | elf_obj_symbol_new_hook (symbolS *symbolP) |
252b5132 | 1711 | { |
49309057 ILT |
1712 | struct elf_obj_sy *sy_obj; |
1713 | ||
1714 | sy_obj = symbol_get_obj (symbolP); | |
1715 | sy_obj->size = NULL; | |
1716 | sy_obj->versioned_name = NULL; | |
252b5132 RH |
1717 | |
1718 | #ifdef NEED_ECOFF_DEBUG | |
1719 | if (ECOFF_DEBUGGING) | |
1720 | ecoff_symbol_new_hook (symbolP); | |
1721 | #endif | |
1722 | } | |
1723 | ||
8fd3e36b AM |
1724 | /* When setting one symbol equal to another, by default we probably |
1725 | want them to have the same "size", whatever it means in the current | |
1726 | context. */ | |
1727 | ||
1728 | void | |
dbe2df79 | 1729 | elf_copy_symbol_attributes (symbolS *dest, symbolS *src) |
8fd3e36b | 1730 | { |
060adf0e AM |
1731 | struct elf_obj_sy *srcelf = symbol_get_obj (src); |
1732 | struct elf_obj_sy *destelf = symbol_get_obj (dest); | |
1733 | if (srcelf->size) | |
1734 | { | |
1735 | if (destelf->size == NULL) | |
325801bd | 1736 | destelf->size = XNEW (expressionS); |
060adf0e AM |
1737 | *destelf->size = *srcelf->size; |
1738 | } | |
1739 | else | |
1740 | { | |
1741 | if (destelf->size != NULL) | |
1742 | free (destelf->size); | |
1743 | destelf->size = NULL; | |
1744 | } | |
1745 | S_SET_SIZE (dest, S_GET_SIZE (src)); | |
26eb4093 JJ |
1746 | /* Don't copy visibility. */ |
1747 | S_SET_OTHER (dest, (ELF_ST_VISIBILITY (S_GET_OTHER (dest)) | |
1748 | | (S_GET_OTHER (src) & ~ELF_ST_VISIBILITY (-1)))); | |
8fd3e36b AM |
1749 | } |
1750 | ||
252b5132 | 1751 | void |
dbe2df79 | 1752 | obj_elf_version (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1753 | { |
1754 | char *name; | |
1755 | unsigned int c; | |
252b5132 RH |
1756 | char *p; |
1757 | asection *seg = now_seg; | |
1758 | subsegT subseg = now_subseg; | |
1759 | Elf_Internal_Note i_note; | |
1760 | Elf_External_Note e_note; | |
dbe2df79 | 1761 | asection *note_secp = NULL; |
252b5132 RH |
1762 | |
1763 | SKIP_WHITESPACE (); | |
1764 | if (*input_line_pointer == '\"') | |
1765 | { | |
6afdfa61 NC |
1766 | unsigned int len; |
1767 | ||
bf514e21 | 1768 | ++input_line_pointer; /* -> 1st char of string. */ |
252b5132 RH |
1769 | name = input_line_pointer; |
1770 | ||
1771 | while (is_a_char (c = next_char_of_string ())) | |
1772 | ; | |
1773 | c = *input_line_pointer; | |
1774 | *input_line_pointer = '\0'; | |
1775 | *(input_line_pointer - 1) = '\0'; | |
1776 | *input_line_pointer = c; | |
1777 | ||
6afdfa61 | 1778 | /* Create the .note section. */ |
252b5132 RH |
1779 | note_secp = subseg_new (".note", 0); |
1780 | bfd_set_section_flags (stdoutput, | |
1781 | note_secp, | |
1782 | SEC_HAS_CONTENTS | SEC_READONLY); | |
1783 | ||
6afdfa61 NC |
1784 | /* Process the version string. */ |
1785 | len = strlen (name) + 1; | |
252b5132 | 1786 | |
6afdfa61 NC |
1787 | /* PR 3456: Although the name field is padded out to an 4-byte |
1788 | boundary, the namesz field should not be adjusted. */ | |
1789 | i_note.namesz = len; | |
1790 | i_note.descsz = 0; /* No description. */ | |
252b5132 RH |
1791 | i_note.type = NT_VERSION; |
1792 | p = frag_more (sizeof (e_note.namesz)); | |
dbe2df79 | 1793 | md_number_to_chars (p, i_note.namesz, sizeof (e_note.namesz)); |
252b5132 | 1794 | p = frag_more (sizeof (e_note.descsz)); |
dbe2df79 | 1795 | md_number_to_chars (p, i_note.descsz, sizeof (e_note.descsz)); |
252b5132 | 1796 | p = frag_more (sizeof (e_note.type)); |
dbe2df79 | 1797 | md_number_to_chars (p, i_note.type, sizeof (e_note.type)); |
6afdfa61 | 1798 | p = frag_more (len); |
5ab504f9 | 1799 | memcpy (p, name, len); |
252b5132 | 1800 | |
252b5132 RH |
1801 | frag_align (2, 0, 0); |
1802 | ||
1803 | subseg_set (seg, subseg); | |
1804 | } | |
1805 | else | |
6afdfa61 NC |
1806 | as_bad (_("expected quoted string")); |
1807 | ||
252b5132 RH |
1808 | demand_empty_rest_of_line (); |
1809 | } | |
1810 | ||
1811 | static void | |
dbe2df79 | 1812 | obj_elf_size (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1813 | { |
d02603dc NC |
1814 | char *name; |
1815 | char c = get_symbol_name (&name); | |
252b5132 RH |
1816 | char *p; |
1817 | expressionS exp; | |
1818 | symbolS *sym; | |
1819 | ||
1820 | p = input_line_pointer; | |
1821 | *p = c; | |
d02603dc | 1822 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
1823 | if (*input_line_pointer != ',') |
1824 | { | |
1825 | *p = 0; | |
1826 | as_bad (_("expected comma after name `%s' in .size directive"), name); | |
1827 | *p = c; | |
1828 | ignore_rest_of_line (); | |
1829 | return; | |
1830 | } | |
1831 | input_line_pointer++; | |
1832 | expression (&exp); | |
1833 | if (exp.X_op == O_absent) | |
1834 | { | |
1835 | as_bad (_("missing expression in .size directive")); | |
1836 | exp.X_op = O_constant; | |
1837 | exp.X_add_number = 0; | |
1838 | } | |
1839 | *p = 0; | |
1840 | sym = symbol_find_or_make (name); | |
1841 | *p = c; | |
1842 | if (exp.X_op == O_constant) | |
c538998c JJ |
1843 | { |
1844 | S_SET_SIZE (sym, exp.X_add_number); | |
1845 | if (symbol_get_obj (sym)->size) | |
1846 | { | |
1847 | xfree (symbol_get_obj (sym)->size); | |
1848 | symbol_get_obj (sym)->size = NULL; | |
1849 | } | |
1850 | } | |
252b5132 RH |
1851 | else |
1852 | { | |
325801bd | 1853 | symbol_get_obj (sym)->size = XNEW (expressionS); |
49309057 | 1854 | *symbol_get_obj (sym)->size = exp; |
252b5132 RH |
1855 | } |
1856 | demand_empty_rest_of_line (); | |
1857 | } | |
1858 | ||
1859 | /* Handle the ELF .type pseudo-op. This sets the type of a symbol. | |
44bf2362 | 1860 | There are six syntaxes: |
fa306131 | 1861 | |
252b5132 RH |
1862 | The first (used on Solaris) is |
1863 | .type SYM,#function | |
1864 | The second (used on UnixWare) is | |
1865 | .type SYM,@function | |
1866 | The third (reportedly to be used on Irix 6.0) is | |
1867 | .type SYM STT_FUNC | |
1868 | The fourth (used on NetBSD/Arm and Linux/ARM) is | |
1869 | .type SYM,%function | |
aa8c34c3 JE |
1870 | The fifth (used on SVR4/860) is |
1871 | .type SYM,"function" | |
44bf2362 NC |
1872 | The sixth (emitted by recent SunPRO under Solaris) is |
1873 | .type SYM,[0-9] | |
1874 | where the integer is the STT_* value. | |
252b5132 RH |
1875 | */ |
1876 | ||
44bf2362 NC |
1877 | static char * |
1878 | obj_elf_type_name (char *cp) | |
1879 | { | |
1880 | char *p; | |
1881 | ||
1882 | p = input_line_pointer; | |
1883 | if (*input_line_pointer >= '0' | |
1884 | && *input_line_pointer <= '9') | |
1885 | { | |
1886 | while (*input_line_pointer >= '0' | |
1887 | && *input_line_pointer <= '9') | |
1888 | ++input_line_pointer; | |
1889 | *cp = *input_line_pointer; | |
1890 | *input_line_pointer = '\0'; | |
1891 | } | |
1892 | else | |
d02603dc | 1893 | *cp = get_symbol_name (&p); |
44bf2362 NC |
1894 | |
1895 | return p; | |
1896 | } | |
1897 | ||
252b5132 | 1898 | static void |
dbe2df79 | 1899 | obj_elf_type (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1900 | { |
252b5132 RH |
1901 | char c; |
1902 | int type; | |
1e9cc1c2 | 1903 | const char *type_name; |
252b5132 | 1904 | symbolS *sym; |
904a31bf | 1905 | elf_symbol_type *elfsym; |
252b5132 | 1906 | |
6e8bd58f NS |
1907 | sym = get_sym_from_input_line_and_check (); |
1908 | c = *input_line_pointer; | |
904a31bf | 1909 | elfsym = (elf_symbol_type *) symbol_get_bfdsym (sym); |
252b5132 | 1910 | |
252b5132 RH |
1911 | if (*input_line_pointer == ',') |
1912 | ++input_line_pointer; | |
1913 | ||
1914 | SKIP_WHITESPACE (); | |
1915 | if ( *input_line_pointer == '#' | |
1916 | || *input_line_pointer == '@' | |
aa8c34c3 | 1917 | || *input_line_pointer == '"' |
252b5132 RH |
1918 | || *input_line_pointer == '%') |
1919 | ++input_line_pointer; | |
1920 | ||
1e9cc1c2 | 1921 | type_name = obj_elf_type_name (& c); |
252b5132 RH |
1922 | |
1923 | type = 0; | |
1e9cc1c2 NC |
1924 | if (strcmp (type_name, "function") == 0 |
1925 | || strcmp (type_name, "2") == 0 | |
1926 | || strcmp (type_name, "STT_FUNC") == 0) | |
252b5132 | 1927 | type = BSF_FUNCTION; |
1e9cc1c2 NC |
1928 | else if (strcmp (type_name, "object") == 0 |
1929 | || strcmp (type_name, "1") == 0 | |
1930 | || strcmp (type_name, "STT_OBJECT") == 0) | |
252b5132 | 1931 | type = BSF_OBJECT; |
1e9cc1c2 NC |
1932 | else if (strcmp (type_name, "tls_object") == 0 |
1933 | || strcmp (type_name, "6") == 0 | |
1934 | || strcmp (type_name, "STT_TLS") == 0) | |
b9734f35 | 1935 | type = BSF_OBJECT | BSF_THREAD_LOCAL; |
1e9cc1c2 NC |
1936 | else if (strcmp (type_name, "notype") == 0 |
1937 | || strcmp (type_name, "0") == 0 | |
1938 | || strcmp (type_name, "STT_NOTYPE") == 0) | |
e7b9a8c1 | 1939 | ; |
1e9cc1c2 NC |
1940 | else if (strcmp (type_name, "common") == 0 |
1941 | || strcmp (type_name, "5") == 0 | |
1942 | || strcmp (type_name, "STT_COMMON") == 0) | |
504b7d20 NC |
1943 | { |
1944 | type = BSF_OBJECT; | |
1945 | ||
1946 | if (! S_IS_COMMON (sym)) | |
1947 | { | |
1948 | if (S_IS_VOLATILE (sym)) | |
1949 | { | |
1950 | sym = symbol_clone (sym, 1); | |
1951 | S_SET_SEGMENT (sym, bfd_com_section_ptr); | |
1952 | S_SET_VALUE (sym, 0); | |
1953 | S_SET_EXTERNAL (sym); | |
1954 | symbol_set_frag (sym, &zero_address_frag); | |
1955 | S_CLEAR_VOLATILE (sym); | |
1956 | } | |
1957 | else if (S_IS_DEFINED (sym) || symbol_equated_p (sym)) | |
1958 | as_bad (_("symbol '%s' is already defined"), S_GET_NAME (sym)); | |
1959 | else | |
1960 | { | |
1961 | /* FIXME: Is it safe to just change the section ? */ | |
1962 | S_SET_SEGMENT (sym, bfd_com_section_ptr); | |
1963 | S_SET_VALUE (sym, 0); | |
1964 | S_SET_EXTERNAL (sym); | |
1965 | } | |
1966 | } | |
1967 | } | |
1e9cc1c2 NC |
1968 | else if (strcmp (type_name, "gnu_indirect_function") == 0 |
1969 | || strcmp (type_name, "10") == 0 | |
1970 | || strcmp (type_name, "STT_GNU_IFUNC") == 0) | |
d8045f23 NC |
1971 | { |
1972 | const struct elf_backend_data *bed; | |
1973 | ||
1974 | bed = get_elf_backend_data (stdoutput); | |
9c55345c | 1975 | if (!(bed->elf_osabi == ELFOSABI_GNU |
83c257ca | 1976 | || bed->elf_osabi == ELFOSABI_FREEBSD |
9c55345c | 1977 | /* GNU is still using the default value 0. */ |
d8045f23 | 1978 | || bed->elf_osabi == ELFOSABI_NONE)) |
83c257ca | 1979 | as_bad (_("symbol type \"%s\" is supported only by GNU and FreeBSD targets"), |
1e9cc1c2 | 1980 | type_name); |
d8045f23 NC |
1981 | type = BSF_FUNCTION | BSF_GNU_INDIRECT_FUNCTION; |
1982 | } | |
1e9cc1c2 | 1983 | else if (strcmp (type_name, "gnu_unique_object") == 0) |
3e7a7d11 | 1984 | { |
d3ce72d0 | 1985 | struct elf_backend_data *bed; |
3e7a7d11 | 1986 | |
d3ce72d0 | 1987 | bed = (struct elf_backend_data *) get_elf_backend_data (stdoutput); |
9c55345c TS |
1988 | if (!(bed->elf_osabi == ELFOSABI_GNU |
1989 | /* GNU is still using the default value 0. */ | |
3e7a7d11 NC |
1990 | || bed->elf_osabi == ELFOSABI_NONE)) |
1991 | as_bad (_("symbol type \"%s\" is supported only by GNU targets"), | |
1e9cc1c2 | 1992 | type_name); |
3e7a7d11 | 1993 | type = BSF_OBJECT | BSF_GNU_UNIQUE; |
9c55345c TS |
1994 | /* PR 10549: Always set OSABI field to GNU for objects containing unique symbols. */ |
1995 | bed->elf_osabi = ELFOSABI_GNU; | |
3e7a7d11 | 1996 | } |
904a31bf | 1997 | #ifdef md_elf_symbol_type |
1e9cc1c2 | 1998 | else if ((type = md_elf_symbol_type (type_name, sym, elfsym)) != -1) |
904a31bf AM |
1999 | ; |
2000 | #endif | |
252b5132 | 2001 | else |
1e9cc1c2 | 2002 | as_bad (_("unrecognized symbol type \"%s\""), type_name); |
252b5132 RH |
2003 | |
2004 | *input_line_pointer = c; | |
2005 | ||
aa8c34c3 JE |
2006 | if (*input_line_pointer == '"') |
2007 | ++input_line_pointer; | |
2008 | ||
904a31bf | 2009 | elfsym->symbol.flags |= type; |
252b5132 RH |
2010 | |
2011 | demand_empty_rest_of_line (); | |
2012 | } | |
2013 | ||
2014 | static void | |
dbe2df79 | 2015 | obj_elf_ident (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2016 | { |
2017 | static segT comment_section; | |
2018 | segT old_section = now_seg; | |
2019 | int old_subsection = now_subseg; | |
2020 | ||
5f91fe03 ILT |
2021 | #ifdef md_flush_pending_output |
2022 | md_flush_pending_output (); | |
2023 | #endif | |
2024 | ||
252b5132 RH |
2025 | if (!comment_section) |
2026 | { | |
2027 | char *p; | |
2028 | comment_section = subseg_new (".comment", 0); | |
2029 | bfd_set_section_flags (stdoutput, comment_section, | |
01fb1836 RM |
2030 | SEC_READONLY | SEC_HAS_CONTENTS |
2031 | | SEC_MERGE | SEC_STRINGS); | |
2032 | comment_section->entsize = 1; | |
cd000bff DJ |
2033 | #ifdef md_elf_section_change_hook |
2034 | md_elf_section_change_hook (); | |
2035 | #endif | |
252b5132 RH |
2036 | p = frag_more (1); |
2037 | *p = 0; | |
2038 | } | |
2039 | else | |
2040 | subseg_set (comment_section, 0); | |
38a57ae7 | 2041 | stringer (8 + 1); |
252b5132 RH |
2042 | subseg_set (old_section, old_subsection); |
2043 | } | |
2044 | ||
2045 | #ifdef INIT_STAB_SECTION | |
2046 | ||
2047 | /* The first entry in a .stabs section is special. */ | |
2048 | ||
2049 | void | |
dbe2df79 | 2050 | obj_elf_init_stab_section (segT seg) |
252b5132 | 2051 | { |
3b4dbbbf | 2052 | const char *file; |
252b5132 RH |
2053 | char *p; |
2054 | char *stabstr_name; | |
2055 | unsigned int stroff; | |
2056 | ||
2057 | /* Force the section to align to a longword boundary. Without this, | |
2058 | UnixWare ar crashes. */ | |
2059 | bfd_set_section_alignment (stdoutput, seg, 2); | |
2060 | ||
bf514e21 | 2061 | /* Make space for this first symbol. */ |
252b5132 | 2062 | p = frag_more (12); |
bf514e21 | 2063 | /* Zero it out. */ |
252b5132 | 2064 | memset (p, 0, 12); |
3b4dbbbf | 2065 | file = as_where (NULL); |
29a2809e | 2066 | stabstr_name = concat (segment_name (seg), "str", (char *) NULL); |
252b5132 | 2067 | stroff = get_stab_string_offset (file, stabstr_name); |
91952a06 | 2068 | know (stroff == 1 || (stroff == 0 && file[0] == '\0')); |
252b5132 RH |
2069 | md_number_to_chars (p, stroff, 4); |
2070 | seg_info (seg)->stabu.p = p; | |
2071 | } | |
2072 | ||
2073 | #endif | |
2074 | ||
2075 | /* Fill in the counts in the first entry in a .stabs section. */ | |
2076 | ||
2077 | static void | |
dbe2df79 | 2078 | adjust_stab_sections (bfd *abfd, asection *sec, void *xxx ATTRIBUTE_UNUSED) |
252b5132 RH |
2079 | { |
2080 | char *name; | |
2081 | asection *strsec; | |
2082 | char *p; | |
2083 | int strsz, nsyms; | |
2084 | ||
2085 | if (strncmp (".stab", sec->name, 5)) | |
2086 | return; | |
2087 | if (!strcmp ("str", sec->name + strlen (sec->name) - 3)) | |
2088 | return; | |
2089 | ||
e1fa0163 | 2090 | name = concat (sec->name, "str", NULL); |
252b5132 RH |
2091 | strsec = bfd_get_section_by_name (abfd, name); |
2092 | if (strsec) | |
2093 | strsz = bfd_section_size (abfd, strsec); | |
2094 | else | |
2095 | strsz = 0; | |
2096 | nsyms = bfd_section_size (abfd, sec) / 12 - 1; | |
2097 | ||
2098 | p = seg_info (sec)->stabu.p; | |
9c2799c2 | 2099 | gas_assert (p != 0); |
252b5132 | 2100 | |
dbe2df79 AM |
2101 | bfd_h_put_16 (abfd, nsyms, p + 6); |
2102 | bfd_h_put_32 (abfd, strsz, p + 8); | |
e1fa0163 | 2103 | free (name); |
252b5132 RH |
2104 | } |
2105 | ||
2106 | #ifdef NEED_ECOFF_DEBUG | |
2107 | ||
2108 | /* This function is called by the ECOFF code. It is supposed to | |
2109 | record the external symbol information so that the backend can | |
2110 | write it out correctly. The ELF backend doesn't actually handle | |
2111 | this at the moment, so we do it ourselves. We save the information | |
2112 | in the symbol. */ | |
2113 | ||
ae4a729b AM |
2114 | #ifdef OBJ_MAYBE_ELF |
2115 | static | |
2116 | #endif | |
252b5132 | 2117 | void |
dbe2df79 | 2118 | elf_ecoff_set_ext (symbolS *sym, struct ecoff_extr *ext) |
252b5132 | 2119 | { |
dbe2df79 | 2120 | symbol_get_bfdsym (sym)->udata.p = ext; |
252b5132 RH |
2121 | } |
2122 | ||
2123 | /* This function is called by bfd_ecoff_debug_externals. It is | |
2124 | supposed to *EXT to the external symbol information, and return | |
2125 | whether the symbol should be used at all. */ | |
2126 | ||
b34976b6 | 2127 | static bfd_boolean |
dbe2df79 | 2128 | elf_get_extr (asymbol *sym, EXTR *ext) |
252b5132 RH |
2129 | { |
2130 | if (sym->udata.p == NULL) | |
b34976b6 | 2131 | return FALSE; |
252b5132 | 2132 | *ext = *(EXTR *) sym->udata.p; |
b34976b6 | 2133 | return TRUE; |
252b5132 RH |
2134 | } |
2135 | ||
2136 | /* This function is called by bfd_ecoff_debug_externals. It has | |
2137 | nothing to do for ELF. */ | |
2138 | ||
252b5132 | 2139 | static void |
dbe2df79 AM |
2140 | elf_set_index (asymbol *sym ATTRIBUTE_UNUSED, |
2141 | bfd_size_type indx ATTRIBUTE_UNUSED) | |
252b5132 RH |
2142 | { |
2143 | } | |
2144 | ||
2145 | #endif /* NEED_ECOFF_DEBUG */ | |
2146 | ||
2147 | void | |
dbe2df79 | 2148 | elf_frob_symbol (symbolS *symp, int *puntp) |
252b5132 | 2149 | { |
49309057 | 2150 | struct elf_obj_sy *sy_obj; |
49002d7f | 2151 | expressionS *size; |
49309057 | 2152 | |
252b5132 RH |
2153 | #ifdef NEED_ECOFF_DEBUG |
2154 | if (ECOFF_DEBUGGING) | |
2155 | ecoff_frob_symbol (symp); | |
2156 | #endif | |
2157 | ||
49309057 ILT |
2158 | sy_obj = symbol_get_obj (symp); |
2159 | ||
49002d7f L |
2160 | size = sy_obj->size; |
2161 | if (size != NULL) | |
252b5132 | 2162 | { |
49002d7f L |
2163 | if (resolve_expression (size) |
2164 | && size->X_op == O_constant) | |
2165 | S_SET_SIZE (symp, size->X_add_number); | |
e1e90034 | 2166 | else |
49002d7f | 2167 | { |
a90fb5e3 | 2168 | if (!flag_allow_nonconst_size) |
869fe6ea AM |
2169 | as_bad (_(".size expression for %s " |
2170 | "does not evaluate to a constant"), S_GET_NAME (symp)); | |
21be61f5 | 2171 | else |
869fe6ea AM |
2172 | as_warn (_(".size expression for %s " |
2173 | "does not evaluate to a constant"), S_GET_NAME (symp)); | |
49002d7f | 2174 | } |
49309057 ILT |
2175 | free (sy_obj->size); |
2176 | sy_obj->size = NULL; | |
252b5132 RH |
2177 | } |
2178 | ||
49309057 | 2179 | if (sy_obj->versioned_name != NULL) |
252b5132 | 2180 | { |
79082ff0 L |
2181 | char *p; |
2182 | ||
2183 | p = strchr (sy_obj->versioned_name, ELF_VER_CHR); | |
85024cd8 AM |
2184 | if (p == NULL) |
2185 | /* We will have already reported an error about a missing version. */ | |
2186 | *puntp = TRUE; | |
79082ff0 | 2187 | |
252b5132 RH |
2188 | /* This symbol was given a new name with the .symver directive. |
2189 | ||
13c56984 AM |
2190 | If this is an external reference, just rename the symbol to |
2191 | include the version string. This will make the relocs be | |
2192 | against the correct versioned symbol. | |
252b5132 RH |
2193 | |
2194 | If this is a definition, add an alias. FIXME: Using an alias | |
2195 | will permit the debugging information to refer to the right | |
2196 | symbol. However, it's not clear whether it is the best | |
2197 | approach. */ | |
2198 | ||
85024cd8 | 2199 | else if (! S_IS_DEFINED (symp)) |
252b5132 | 2200 | { |
252b5132 | 2201 | /* Verify that the name isn't using the @@ syntax--this is |
13c56984 AM |
2202 | reserved for definitions of the default version to link |
2203 | against. */ | |
252b5132 RH |
2204 | if (p[1] == ELF_VER_CHR) |
2205 | { | |
85024cd8 AM |
2206 | as_bad (_("invalid attempt to declare external version name" |
2207 | " as default in symbol `%s'"), | |
49309057 | 2208 | sy_obj->versioned_name); |
b34976b6 | 2209 | *puntp = TRUE; |
252b5132 | 2210 | } |
49309057 | 2211 | S_SET_NAME (symp, sy_obj->versioned_name); |
252b5132 RH |
2212 | } |
2213 | else | |
2214 | { | |
dbe2df79 | 2215 | if (p[1] == ELF_VER_CHR && p[2] == ELF_VER_CHR) |
79082ff0 L |
2216 | { |
2217 | size_t l; | |
2218 | ||
2219 | /* The @@@ syntax is a special case. It renames the | |
2220 | symbol name to versioned_name with one `@' removed. */ | |
2221 | l = strlen (&p[3]) + 1; | |
dbe2df79 | 2222 | memmove (&p[2], &p[3], l); |
79082ff0 L |
2223 | S_SET_NAME (symp, sy_obj->versioned_name); |
2224 | } | |
2225 | else | |
2226 | { | |
2227 | symbolS *symp2; | |
252b5132 | 2228 | |
79082ff0 L |
2229 | /* FIXME: Creating a new symbol here is risky. We're |
2230 | in the final loop over the symbol table. We can | |
2231 | get away with it only because the symbol goes to | |
2232 | the end of the list, where the loop will still see | |
2233 | it. It would probably be better to do this in | |
2234 | obj_frob_file_before_adjust. */ | |
252b5132 | 2235 | |
79082ff0 | 2236 | symp2 = symbol_find_or_make (sy_obj->versioned_name); |
252b5132 | 2237 | |
79082ff0 | 2238 | /* Now we act as though we saw symp2 = sym. */ |
252b5132 | 2239 | |
79082ff0 | 2240 | S_SET_SEGMENT (symp2, S_GET_SEGMENT (symp)); |
252b5132 | 2241 | |
79082ff0 L |
2242 | /* Subtracting out the frag address here is a hack |
2243 | because we are in the middle of the final loop. */ | |
2244 | S_SET_VALUE (symp2, | |
2245 | (S_GET_VALUE (symp) | |
2246 | - symbol_get_frag (symp)->fr_address)); | |
252b5132 | 2247 | |
79082ff0 | 2248 | symbol_set_frag (symp2, symbol_get_frag (symp)); |
252b5132 | 2249 | |
79082ff0 L |
2250 | /* This will copy over the size information. */ |
2251 | copy_symbol_attributes (symp2, symp); | |
252b5132 | 2252 | |
26eb4093 JJ |
2253 | S_SET_OTHER (symp2, S_GET_OTHER (symp)); |
2254 | ||
79082ff0 L |
2255 | if (S_IS_WEAK (symp)) |
2256 | S_SET_WEAK (symp2); | |
252b5132 | 2257 | |
79082ff0 L |
2258 | if (S_IS_EXTERNAL (symp)) |
2259 | S_SET_EXTERNAL (symp2); | |
2260 | } | |
252b5132 RH |
2261 | } |
2262 | } | |
2263 | ||
2264 | /* Double check weak symbols. */ | |
49309057 | 2265 | if (S_IS_WEAK (symp)) |
252b5132 RH |
2266 | { |
2267 | if (S_IS_COMMON (symp)) | |
6ce8b369 | 2268 | as_bad (_("symbol `%s' can not be both weak and common"), |
252b5132 RH |
2269 | S_GET_NAME (symp)); |
2270 | } | |
2271 | ||
2272 | #ifdef TC_MIPS | |
2273 | /* The Irix 5 and 6 assemblers set the type of any common symbol and | |
2274 | any undefined non-function symbol to STT_OBJECT. We try to be | |
2275 | compatible, since newer Irix 5 and 6 linkers care. However, we | |
2276 | only set undefined symbols to be STT_OBJECT if we are on Irix, | |
2277 | because that is the only time gcc will generate the necessary | |
2278 | .global directives to mark functions. */ | |
2279 | ||
2280 | if (S_IS_COMMON (symp)) | |
49309057 | 2281 | symbol_get_bfdsym (symp)->flags |= BSF_OBJECT; |
252b5132 RH |
2282 | |
2283 | if (strstr (TARGET_OS, "irix") != NULL | |
49309057 ILT |
2284 | && ! S_IS_DEFINED (symp) |
2285 | && (symbol_get_bfdsym (symp)->flags & BSF_FUNCTION) == 0) | |
2286 | symbol_get_bfdsym (symp)->flags |= BSF_OBJECT; | |
252b5132 | 2287 | #endif |
252b5132 RH |
2288 | } |
2289 | ||
060adf0e AM |
2290 | struct group_list |
2291 | { | |
2292 | asection **head; /* Section lists. */ | |
2293 | unsigned int *elt_count; /* Number of sections in each list. */ | |
2294 | unsigned int num_group; /* Number of lists. */ | |
1e9cc1c2 | 2295 | struct hash_control *indexes; /* Maps group name to index in head array. */ |
060adf0e AM |
2296 | }; |
2297 | ||
2298 | /* Called via bfd_map_over_sections. If SEC is a member of a group, | |
2299 | add it to a list of sections belonging to the group. INF is a | |
2300 | pointer to a struct group_list, which is where we store the head of | |
2301 | each list. */ | |
2302 | ||
2303 | static void | |
dbe2df79 | 2304 | build_group_lists (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *inf) |
060adf0e | 2305 | { |
1e9cc1c2 | 2306 | struct group_list *list = (struct group_list *) inf; |
aa1f4858 | 2307 | const char *group_name = elf_group_name (sec); |
060adf0e | 2308 | unsigned int i; |
1e9cc1c2 NC |
2309 | unsigned int *elem_idx; |
2310 | unsigned int *idx_ptr; | |
060adf0e AM |
2311 | |
2312 | if (group_name == NULL) | |
2313 | return; | |
2314 | ||
2315 | /* If this group already has a list, add the section to the head of | |
2316 | the list. */ | |
1e9cc1c2 NC |
2317 | elem_idx = (unsigned int *) hash_find (list->indexes, group_name); |
2318 | if (elem_idx != NULL) | |
060adf0e | 2319 | { |
1e9cc1c2 NC |
2320 | elf_next_in_group (sec) = list->head[*elem_idx]; |
2321 | list->head[*elem_idx] = sec; | |
2322 | list->elt_count[*elem_idx] += 1; | |
2323 | return; | |
060adf0e AM |
2324 | } |
2325 | ||
2326 | /* New group. Make the arrays bigger in chunks to minimize calls to | |
2327 | realloc. */ | |
2328 | i = list->num_group; | |
2329 | if ((i & 127) == 0) | |
2330 | { | |
2331 | unsigned int newsize = i + 128; | |
add39d23 TS |
2332 | list->head = XRESIZEVEC (asection *, list->head, newsize); |
2333 | list->elt_count = XRESIZEVEC (unsigned int, list->elt_count, newsize); | |
060adf0e AM |
2334 | } |
2335 | list->head[i] = sec; | |
2336 | list->elt_count[i] = 1; | |
2337 | list->num_group += 1; | |
1e9cc1c2 NC |
2338 | |
2339 | /* Add index to hash. */ | |
325801bd | 2340 | idx_ptr = XNEW (unsigned int); |
1e9cc1c2 NC |
2341 | *idx_ptr = i; |
2342 | hash_insert (list->indexes, group_name, idx_ptr); | |
2343 | } | |
2344 | ||
2345 | static void free_section_idx (const char *key ATTRIBUTE_UNUSED, void *val) | |
2346 | { | |
2347 | free ((unsigned int *) val); | |
060adf0e AM |
2348 | } |
2349 | ||
252b5132 | 2350 | void |
709001e9 | 2351 | elf_adjust_symtab (void) |
252b5132 | 2352 | { |
060adf0e AM |
2353 | struct group_list list; |
2354 | unsigned int i; | |
2355 | ||
060adf0e AM |
2356 | /* Go find section groups. */ |
2357 | list.num_group = 0; | |
2358 | list.head = NULL; | |
2359 | list.elt_count = NULL; | |
709001e9 | 2360 | list.indexes = hash_new (); |
dbe2df79 | 2361 | bfd_map_over_sections (stdoutput, build_group_lists, &list); |
3739860c | 2362 | |
060adf0e AM |
2363 | /* Make the SHT_GROUP sections that describe each section group. We |
2364 | can't set up the section contents here yet, because elf section | |
2365 | indices have yet to be calculated. elf.c:set_group_contents does | |
2366 | the rest of the work. */ | |
709001e9 | 2367 | for (i = 0; i < list.num_group; i++) |
060adf0e | 2368 | { |
aa1f4858 | 2369 | const char *group_name = elf_group_name (list.head[i]); |
9758f3fc | 2370 | const char *sec_name; |
060adf0e AM |
2371 | asection *s; |
2372 | flagword flags; | |
9758f3fc | 2373 | struct symbol *sy; |
587aac4e | 2374 | bfd_size_type size; |
060adf0e | 2375 | |
060adf0e | 2376 | flags = SEC_READONLY | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_GROUP; |
d2dab548 | 2377 | for (s = list.head[i]; s != NULL; s = elf_next_in_group (s)) |
68bfbfcc | 2378 | if ((s->flags ^ flags) & SEC_LINK_ONCE) |
d2dab548 AM |
2379 | { |
2380 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
2381 | if (s != list.head[i]) | |
2382 | { | |
2383 | as_warn (_("assuming all members of group `%s' are COMDAT"), | |
2384 | group_name); | |
2385 | break; | |
2386 | } | |
2387 | } | |
2388 | ||
709001e9 | 2389 | sec_name = ".group"; |
9758f3fc | 2390 | s = subseg_force_new (sec_name, 0); |
060adf0e AM |
2391 | if (s == NULL |
2392 | || !bfd_set_section_flags (stdoutput, s, flags) | |
2393 | || !bfd_set_section_alignment (stdoutput, s, 2)) | |
2394 | { | |
2395 | as_fatal (_("can't create group: %s"), | |
2396 | bfd_errmsg (bfd_get_error ())); | |
2397 | } | |
2f89ff8d | 2398 | elf_section_type (s) = SHT_GROUP; |
060adf0e | 2399 | |
aa1f4858 AM |
2400 | /* Pass a pointer to the first section in this group. */ |
2401 | elf_next_in_group (s) = list.head[i]; | |
709001e9 MM |
2402 | /* Make sure that the signature symbol for the group has the |
2403 | name of the group. */ | |
2404 | sy = symbol_find_exact (group_name); | |
2405 | if (!sy | |
2406 | || (sy != symbol_lastP | |
2407 | && (sy->sy_next == NULL | |
2408 | || sy->sy_next->sy_previous != sy))) | |
2409 | { | |
2410 | /* Create the symbol now. */ | |
2411 | sy = symbol_new (group_name, now_seg, (valueT) 0, frag_now); | |
69b70cfe RO |
2412 | #ifdef TE_SOLARIS |
2413 | /* Before Solaris 11 build 154, Sun ld rejects local group | |
2414 | signature symbols, so make them weak hidden instead. */ | |
2415 | symbol_get_bfdsym (sy)->flags |= BSF_WEAK; | |
2416 | S_SET_OTHER (sy, STV_HIDDEN); | |
2417 | #else | |
709001e9 | 2418 | symbol_get_obj (sy)->local = 1; |
69b70cfe | 2419 | #endif |
709001e9 MM |
2420 | symbol_table_insert (sy); |
2421 | } | |
2422 | elf_group_id (s) = symbol_get_bfdsym (sy); | |
060adf0e | 2423 | |
587aac4e AM |
2424 | size = 4 * (list.elt_count[i] + 1); |
2425 | bfd_set_section_size (stdoutput, s, size); | |
b7712f8d | 2426 | s->contents = (unsigned char *) frag_more (size); |
060adf0e | 2427 | frag_now->fr_fix = frag_now_fix_octets (); |
07cb2078 | 2428 | frag_wane (frag_now); |
060adf0e AM |
2429 | } |
2430 | ||
1e9cc1c2 NC |
2431 | /* Cleanup hash. */ |
2432 | hash_traverse (list.indexes, free_section_idx); | |
2433 | hash_die (list.indexes); | |
252b5132 RH |
2434 | } |
2435 | ||
709001e9 MM |
2436 | void |
2437 | elf_frob_file (void) | |
2438 | { | |
2439 | bfd_map_over_sections (stdoutput, adjust_stab_sections, NULL); | |
2440 | ||
2441 | #ifdef elf_tc_final_processing | |
2442 | elf_tc_final_processing (); | |
2443 | #endif | |
2444 | } | |
2445 | ||
4a1805b1 | 2446 | /* It removes any unneeded versioned symbols from the symbol table. */ |
339681c0 L |
2447 | |
2448 | void | |
dbe2df79 | 2449 | elf_frob_file_before_adjust (void) |
339681c0 L |
2450 | { |
2451 | if (symbol_rootP) | |
2452 | { | |
2453 | symbolS *symp; | |
2454 | ||
2455 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) | |
00e6e13d | 2456 | if (!S_IS_DEFINED (symp)) |
79082ff0 | 2457 | { |
00e6e13d | 2458 | if (symbol_get_obj (symp)->versioned_name) |
79082ff0 L |
2459 | { |
2460 | char *p; | |
2461 | ||
2462 | /* The @@@ syntax is a special case. If the symbol is | |
2463 | not defined, 2 `@'s will be removed from the | |
2464 | versioned_name. */ | |
2465 | ||
2466 | p = strchr (symbol_get_obj (symp)->versioned_name, | |
2467 | ELF_VER_CHR); | |
85024cd8 | 2468 | if (p != NULL && p[1] == ELF_VER_CHR && p[2] == ELF_VER_CHR) |
79082ff0 L |
2469 | { |
2470 | size_t l = strlen (&p[3]) + 1; | |
dbe2df79 | 2471 | memmove (&p[1], &p[3], l); |
79082ff0 L |
2472 | } |
2473 | if (symbol_used_p (symp) == 0 | |
2474 | && symbol_used_in_reloc_p (symp) == 0) | |
2475 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
2476 | } | |
00e6e13d JJ |
2477 | |
2478 | /* If there was .weak foo, but foo was neither defined nor | |
2479 | used anywhere, remove it. */ | |
2480 | ||
2481 | else if (S_IS_WEAK (symp) | |
2482 | && symbol_used_p (symp) == 0 | |
2483 | && symbol_used_in_reloc_p (symp) == 0) | |
2484 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
79082ff0 | 2485 | } |
339681c0 L |
2486 | } |
2487 | } | |
2488 | ||
252b5132 RH |
2489 | /* It is required that we let write_relocs have the opportunity to |
2490 | optimize away fixups before output has begun, since it is possible | |
2491 | to eliminate all fixups for a section and thus we never should | |
2492 | have generated the relocation section. */ | |
2493 | ||
2494 | void | |
dbe2df79 | 2495 | elf_frob_file_after_relocs (void) |
252b5132 RH |
2496 | { |
2497 | #ifdef NEED_ECOFF_DEBUG | |
2498 | if (ECOFF_DEBUGGING) | |
2499 | /* Generate the ECOFF debugging information. */ | |
2500 | { | |
2501 | const struct ecoff_debug_swap *debug_swap; | |
2502 | struct ecoff_debug_info debug; | |
2503 | char *buf; | |
2504 | asection *sec; | |
2505 | ||
2506 | debug_swap | |
2507 | = get_elf_backend_data (stdoutput)->elf_backend_ecoff_debug_swap; | |
dbe2df79 | 2508 | know (debug_swap != NULL); |
252b5132 RH |
2509 | ecoff_build_debug (&debug.symbolic_header, &buf, debug_swap); |
2510 | ||
2511 | /* Set up the pointers in debug. */ | |
2512 | #define SET(ptr, offset, type) \ | |
2513 | debug.ptr = (type) (buf + debug.symbolic_header.offset) | |
2514 | ||
2515 | SET (line, cbLineOffset, unsigned char *); | |
dbe2df79 AM |
2516 | SET (external_dnr, cbDnOffset, void *); |
2517 | SET (external_pdr, cbPdOffset, void *); | |
2518 | SET (external_sym, cbSymOffset, void *); | |
2519 | SET (external_opt, cbOptOffset, void *); | |
252b5132 RH |
2520 | SET (external_aux, cbAuxOffset, union aux_ext *); |
2521 | SET (ss, cbSsOffset, char *); | |
dbe2df79 AM |
2522 | SET (external_fdr, cbFdOffset, void *); |
2523 | SET (external_rfd, cbRfdOffset, void *); | |
252b5132 RH |
2524 | /* ssext and external_ext are set up just below. */ |
2525 | ||
2526 | #undef SET | |
2527 | ||
2528 | /* Set up the external symbols. */ | |
2529 | debug.ssext = debug.ssext_end = NULL; | |
2530 | debug.external_ext = debug.external_ext_end = NULL; | |
b34976b6 | 2531 | if (! bfd_ecoff_debug_externals (stdoutput, &debug, debug_swap, TRUE, |
252b5132 | 2532 | elf_get_extr, elf_set_index)) |
6ce8b369 | 2533 | as_fatal (_("failed to set up debugging information: %s"), |
252b5132 RH |
2534 | bfd_errmsg (bfd_get_error ())); |
2535 | ||
2536 | sec = bfd_get_section_by_name (stdoutput, ".mdebug"); | |
9c2799c2 | 2537 | gas_assert (sec != NULL); |
252b5132 | 2538 | |
b34976b6 | 2539 | know (!stdoutput->output_has_begun); |
252b5132 RH |
2540 | |
2541 | /* We set the size of the section, call bfd_set_section_contents | |
2542 | to force the ELF backend to allocate a file position, and then | |
2543 | write out the data. FIXME: Is this really the best way to do | |
2544 | this? */ | |
587aac4e AM |
2545 | bfd_set_section_size |
2546 | (stdoutput, sec, bfd_ecoff_debug_size (stdoutput, &debug, debug_swap)); | |
252b5132 | 2547 | |
5f91fe03 | 2548 | /* Pass BUF to bfd_set_section_contents because this will |
13c56984 AM |
2549 | eventually become a call to fwrite, and ISO C prohibits |
2550 | passing a NULL pointer to a stdio function even if the | |
2551 | pointer will not be used. */ | |
dbe2df79 | 2552 | if (! bfd_set_section_contents (stdoutput, sec, buf, 0, 0)) |
6ce8b369 | 2553 | as_fatal (_("can't start writing .mdebug section: %s"), |
252b5132 RH |
2554 | bfd_errmsg (bfd_get_error ())); |
2555 | ||
b34976b6 | 2556 | know (stdoutput->output_has_begun); |
252b5132 RH |
2557 | know (sec->filepos != 0); |
2558 | ||
2559 | if (! bfd_ecoff_write_debug (stdoutput, &debug, debug_swap, | |
2560 | sec->filepos)) | |
6ce8b369 | 2561 | as_fatal (_("could not write .mdebug section: %s"), |
252b5132 RH |
2562 | bfd_errmsg (bfd_get_error ())); |
2563 | } | |
2564 | #endif /* NEED_ECOFF_DEBUG */ | |
2565 | } | |
2566 | ||
2567 | #ifdef SCO_ELF | |
2568 | ||
aaa2624b | 2569 | /* Heavily plagiarized from obj_elf_version. The idea is to emit the |
252b5132 RH |
2570 | SCO specific identifier in the .notes section to satisfy the SCO |
2571 | linker. | |
2572 | ||
2573 | This looks more complicated than it really is. As opposed to the | |
2574 | "obvious" solution, this should handle the cross dev cases | |
2575 | correctly. (i.e, hosting on a 64 bit big endian processor, but | |
2576 | generating SCO Elf code) Efficiency isn't a concern, as there | |
2577 | should be exactly one of these sections per object module. | |
2578 | ||
2579 | SCO OpenServer 5 identifies it's ELF modules with a standard ELF | |
2580 | .note section. | |
2581 | ||
fa306131 AM |
2582 | int_32 namesz = 4 ; Name size |
2583 | int_32 descsz = 12 ; Descriptive information | |
2584 | int_32 type = 1 ; | |
2585 | char name[4] = "SCO" ; Originator name ALWAYS SCO + NULL | |
252b5132 RH |
2586 | int_32 version = (major ver # << 16) | version of tools ; |
2587 | int_32 source = (tool_id << 16 ) | 1 ; | |
2588 | int_32 info = 0 ; These are set by the SCO tools, but we | |
13c56984 | 2589 | don't know enough about the source |
252b5132 RH |
2590 | environment to set them. SCO ld currently |
2591 | ignores them, and recommends we set them | |
2592 | to zero. */ | |
2593 | ||
2594 | #define SCO_MAJOR_VERSION 0x1 | |
2595 | #define SCO_MINOR_VERSION 0x1 | |
2596 | ||
2597 | void | |
dbe2df79 | 2598 | sco_id (void) |
252b5132 RH |
2599 | { |
2600 | ||
2601 | char *name; | |
2602 | unsigned int c; | |
2603 | char ch; | |
2604 | char *p; | |
2605 | asection *seg = now_seg; | |
2606 | subsegT subseg = now_subseg; | |
2607 | Elf_Internal_Note i_note; | |
2608 | Elf_External_Note e_note; | |
dbe2df79 | 2609 | asection *note_secp = NULL; |
252b5132 RH |
2610 | int i, len; |
2611 | ||
2612 | /* create the .note section */ | |
2613 | ||
2614 | note_secp = subseg_new (".note", 0); | |
2615 | bfd_set_section_flags (stdoutput, | |
2616 | note_secp, | |
2617 | SEC_HAS_CONTENTS | SEC_READONLY); | |
2618 | ||
2619 | /* process the version string */ | |
2620 | ||
fa306131 | 2621 | i_note.namesz = 4; |
252b5132 RH |
2622 | i_note.descsz = 12; /* 12 descriptive bytes */ |
2623 | i_note.type = NT_VERSION; /* Contains a version string */ | |
2624 | ||
2625 | p = frag_more (sizeof (i_note.namesz)); | |
dbe2df79 | 2626 | md_number_to_chars (p, i_note.namesz, 4); |
252b5132 RH |
2627 | |
2628 | p = frag_more (sizeof (i_note.descsz)); | |
dbe2df79 | 2629 | md_number_to_chars (p, i_note.descsz, 4); |
252b5132 RH |
2630 | |
2631 | p = frag_more (sizeof (i_note.type)); | |
dbe2df79 | 2632 | md_number_to_chars (p, i_note.type, 4); |
252b5132 RH |
2633 | |
2634 | p = frag_more (4); | |
fa306131 | 2635 | strcpy (p, "SCO"); |
252b5132 RH |
2636 | |
2637 | /* Note: this is the version number of the ELF we're representing */ | |
2638 | p = frag_more (4); | |
2639 | md_number_to_chars (p, (SCO_MAJOR_VERSION << 16) | (SCO_MINOR_VERSION), 4); | |
2640 | ||
2641 | /* Here, we pick a magic number for ourselves (yes, I "registered" | |
2642 | it with SCO. The bottom bit shows that we are compat with the | |
2643 | SCO ABI. */ | |
2644 | p = frag_more (4); | |
2645 | md_number_to_chars (p, 0x4c520000 | 0x0001, 4); | |
2646 | ||
2647 | /* If we knew (or cared) what the source language options were, we'd | |
2648 | fill them in here. SCO has given us permission to ignore these | |
2649 | and just set them to zero. */ | |
2650 | p = frag_more (4); | |
2651 | md_number_to_chars (p, 0x0000, 4); | |
fa306131 | 2652 | |
252b5132 RH |
2653 | frag_align (2, 0, 0); |
2654 | ||
2655 | /* We probably can't restore the current segment, for there likely | |
2656 | isn't one yet... */ | |
2657 | if (seg && subseg) | |
2658 | subseg_set (seg, subseg); | |
2659 | ||
2660 | } | |
2661 | ||
2662 | #endif /* SCO_ELF */ | |
2663 | ||
bc6b4acc RO |
2664 | static void |
2665 | elf_generate_asm_lineno (void) | |
2666 | { | |
2667 | #ifdef NEED_ECOFF_DEBUG | |
2668 | if (ECOFF_DEBUGGING) | |
2669 | ecoff_generate_asm_lineno (); | |
2670 | #endif | |
2671 | } | |
2672 | ||
2673 | static void | |
bd937d21 L |
2674 | elf_process_stab (segT sec ATTRIBUTE_UNUSED, |
2675 | int what ATTRIBUTE_UNUSED, | |
2676 | const char *string ATTRIBUTE_UNUSED, | |
2677 | int type ATTRIBUTE_UNUSED, | |
2678 | int other ATTRIBUTE_UNUSED, | |
2679 | int desc ATTRIBUTE_UNUSED) | |
bc6b4acc RO |
2680 | { |
2681 | #ifdef NEED_ECOFF_DEBUG | |
2682 | if (ECOFF_DEBUGGING) | |
2683 | ecoff_stab (sec, what, string, type, other, desc); | |
2684 | #endif | |
2685 | } | |
2686 | ||
5110c57e | 2687 | static int |
dbe2df79 | 2688 | elf_separate_stab_sections (void) |
5110c57e HPN |
2689 | { |
2690 | #ifdef NEED_ECOFF_DEBUG | |
2691 | return (!ECOFF_DEBUGGING); | |
2692 | #else | |
2693 | return 1; | |
2694 | #endif | |
2695 | } | |
2696 | ||
2697 | static void | |
dbe2df79 | 2698 | elf_init_stab_section (segT seg) |
5110c57e HPN |
2699 | { |
2700 | #ifdef NEED_ECOFF_DEBUG | |
2701 | if (!ECOFF_DEBUGGING) | |
2702 | #endif | |
2703 | obj_elf_init_stab_section (seg); | |
2704 | } | |
2705 | ||
252b5132 RH |
2706 | const struct format_ops elf_format_ops = |
2707 | { | |
2708 | bfd_target_elf_flavour, | |
4c63da97 AM |
2709 | 0, /* dfl_leading_underscore */ |
2710 | 1, /* emit_section_symbols */ | |
5110c57e HPN |
2711 | elf_begin, |
2712 | elf_file_symbol, | |
252b5132 RH |
2713 | elf_frob_symbol, |
2714 | elf_frob_file, | |
339681c0 | 2715 | elf_frob_file_before_adjust, |
a161fe53 | 2716 | 0, /* obj_frob_file_before_fix */ |
252b5132 RH |
2717 | elf_frob_file_after_relocs, |
2718 | elf_s_get_size, elf_s_set_size, | |
2719 | elf_s_get_align, elf_s_set_align, | |
4c63da97 | 2720 | elf_s_get_other, |
5110c57e | 2721 | elf_s_set_other, |
4c63da97 | 2722 | 0, /* s_get_desc */ |
5110c57e HPN |
2723 | 0, /* s_set_desc */ |
2724 | 0, /* s_get_type */ | |
2725 | 0, /* s_set_type */ | |
252b5132 | 2726 | elf_copy_symbol_attributes, |
bc6b4acc RO |
2727 | elf_generate_asm_lineno, |
2728 | elf_process_stab, | |
5110c57e HPN |
2729 | elf_separate_stab_sections, |
2730 | elf_init_stab_section, | |
252b5132 RH |
2731 | elf_sec_sym_ok_for_reloc, |
2732 | elf_pop_insert, | |
2733 | #ifdef NEED_ECOFF_DEBUG | |
2734 | elf_ecoff_set_ext, | |
2735 | #else | |
4c63da97 | 2736 | 0, /* ecoff_set_ext */ |
252b5132 | 2737 | #endif |
4c63da97 | 2738 | elf_obj_read_begin_hook, |
4cae74aa | 2739 | elf_obj_symbol_new_hook, |
645ea3ea AM |
2740 | 0, |
2741 | elf_adjust_symtab | |
252b5132 | 2742 | }; |