Commit | Line | Data |
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252b5132 | 1 | /* ELF object file format |
2571583a | 2 | Copyright (C) 1992-2017 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. */ | |
37f9ec62 | 167 | { "aent", ecoff_directive_ent, 1 }, |
252b5132 RH |
168 | { "begin", ecoff_directive_begin, 0 }, |
169 | { "bend", ecoff_directive_bend, 0 }, | |
170 | { "end", ecoff_directive_end, 0 }, | |
171 | { "ent", ecoff_directive_ent, 0 }, | |
172 | { "fmask", ecoff_directive_fmask, 0 }, | |
173 | { "frame", ecoff_directive_frame, 0 }, | |
174 | { "loc", ecoff_directive_loc, 0 }, | |
175 | { "mask", ecoff_directive_mask, 0 }, | |
176 | ||
177 | /* Other ECOFF directives. */ | |
178 | { "extern", ecoff_directive_extern, 0 }, | |
179 | ||
180 | /* These are used on Irix. I don't know how to implement them. */ | |
181 | { "alias", s_ignore, 0 }, | |
182 | { "bgnb", s_ignore, 0 }, | |
183 | { "endb", s_ignore, 0 }, | |
184 | { "lab", s_ignore, 0 }, | |
185 | { "noalias", s_ignore, 0 }, | |
186 | { "verstamp", s_ignore, 0 }, | |
187 | { "vreg", s_ignore, 0 }, | |
188 | #endif | |
189 | ||
ab9da554 | 190 | {NULL, NULL, 0} /* end sentinel */ |
252b5132 RH |
191 | }; |
192 | ||
193 | #undef NO_RELOC | |
194 | #include "aout/aout64.h" | |
195 | ||
196 | /* This is called when the assembler starts. */ | |
197 | ||
3b22753a L |
198 | asection *elf_com_section_ptr; |
199 | ||
252b5132 | 200 | void |
dbe2df79 | 201 | elf_begin (void) |
252b5132 | 202 | { |
dbe2df79 AM |
203 | asection *s; |
204 | ||
252b5132 | 205 | /* Add symbols for the known sections to the symbol table. */ |
dbe2df79 AM |
206 | s = bfd_get_section_by_name (stdoutput, TEXT_SECTION_NAME); |
207 | symbol_table_insert (section_symbol (s)); | |
208 | s = bfd_get_section_by_name (stdoutput, DATA_SECTION_NAME); | |
209 | symbol_table_insert (section_symbol (s)); | |
210 | s = bfd_get_section_by_name (stdoutput, BSS_SECTION_NAME); | |
211 | symbol_table_insert (section_symbol (s)); | |
3b22753a | 212 | elf_com_section_ptr = bfd_com_section_ptr; |
252b5132 RH |
213 | } |
214 | ||
215 | void | |
dbe2df79 | 216 | elf_pop_insert (void) |
252b5132 RH |
217 | { |
218 | pop_insert (elf_pseudo_table); | |
219 | if (ECOFF_DEBUGGING) | |
220 | pop_insert (ecoff_debug_pseudo_table); | |
221 | } | |
222 | ||
223 | static bfd_vma | |
dbe2df79 | 224 | elf_s_get_size (symbolS *sym) |
252b5132 RH |
225 | { |
226 | return S_GET_SIZE (sym); | |
227 | } | |
228 | ||
229 | static void | |
dbe2df79 | 230 | elf_s_set_size (symbolS *sym, bfd_vma sz) |
252b5132 RH |
231 | { |
232 | S_SET_SIZE (sym, sz); | |
233 | } | |
234 | ||
235 | static bfd_vma | |
dbe2df79 | 236 | elf_s_get_align (symbolS *sym) |
252b5132 RH |
237 | { |
238 | return S_GET_ALIGN (sym); | |
239 | } | |
240 | ||
241 | static void | |
dbe2df79 | 242 | elf_s_set_align (symbolS *sym, bfd_vma align) |
252b5132 RH |
243 | { |
244 | S_SET_ALIGN (sym, align); | |
245 | } | |
246 | ||
4c63da97 | 247 | int |
dbe2df79 | 248 | elf_s_get_other (symbolS *sym) |
4c63da97 AM |
249 | { |
250 | return elf_symbol (symbol_get_bfdsym (sym))->internal_elf_sym.st_other; | |
251 | } | |
252 | ||
5110c57e | 253 | static void |
dbe2df79 | 254 | elf_s_set_other (symbolS *sym, int other) |
5110c57e HPN |
255 | { |
256 | S_SET_OTHER (sym, other); | |
257 | } | |
258 | ||
252b5132 | 259 | static int |
dbe2df79 | 260 | elf_sec_sym_ok_for_reloc (asection *sec) |
252b5132 RH |
261 | { |
262 | return obj_sec_sym_ok_for_reloc (sec); | |
263 | } | |
264 | ||
265 | void | |
c04f5787 | 266 | elf_file_symbol (const char *s, int appfile) |
252b5132 | 267 | { |
c04f5787 AM |
268 | if (!appfile |
269 | || symbol_rootP == NULL | |
270 | || symbol_rootP->bsym == NULL | |
271 | || (symbol_rootP->bsym->flags & BSF_FILE) == 0) | |
272 | { | |
273 | symbolS *sym; | |
e57e6ddc | 274 | size_t name_length; |
252b5132 | 275 | |
c04f5787 AM |
276 | sym = symbol_new (s, absolute_section, 0, NULL); |
277 | symbol_set_frag (sym, &zero_address_frag); | |
efa19bfd JB |
278 | |
279 | name_length = strlen (s); | |
280 | if (name_length > strlen (S_GET_NAME (sym))) | |
281 | { | |
282 | obstack_grow (¬es, s, name_length + 1); | |
1e9cc1c2 | 283 | S_SET_NAME (sym, (const char *) obstack_finish (¬es)); |
efa19bfd JB |
284 | } |
285 | else | |
286 | strcpy ((char *) S_GET_NAME (sym), s); | |
287 | ||
c04f5787 | 288 | symbol_get_bfdsym (sym)->flags |= BSF_FILE; |
252b5132 | 289 | |
fbdf9406 JB |
290 | if (symbol_rootP != sym |
291 | && (symbol_rootP->bsym == NULL | |
292 | || !(symbol_rootP->bsym->flags & BSF_FILE))) | |
c04f5787 AM |
293 | { |
294 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); | |
295 | symbol_insert (sym, symbol_rootP, &symbol_rootP, &symbol_lastP); | |
fbdf9406 JB |
296 | } |
297 | ||
252b5132 | 298 | #ifdef DEBUG |
fbdf9406 | 299 | verify_symbol_chain (symbol_rootP, symbol_lastP); |
252b5132 RH |
300 | #endif |
301 | } | |
302 | ||
303 | #ifdef NEED_ECOFF_DEBUG | |
f17c130b | 304 | ecoff_new_file (s, appfile); |
252b5132 RH |
305 | #endif |
306 | } | |
307 | ||
e13bab5a AM |
308 | /* Called from read.c:s_comm after we've parsed .comm symbol, size. |
309 | Parse a possible alignment value. */ | |
310 | ||
3b22753a | 311 | symbolS * |
e13bab5a | 312 | elf_common_parse (int ignore ATTRIBUTE_UNUSED, symbolS *symbolP, addressT size) |
252b5132 | 313 | { |
e13bab5a AM |
314 | addressT align = 0; |
315 | int is_local = symbol_get_obj (symbolP)->local; | |
252b5132 | 316 | |
e13bab5a | 317 | if (*input_line_pointer == ',') |
9be1cda6 | 318 | { |
e13bab5a | 319 | char *save = input_line_pointer; |
9be1cda6 | 320 | |
252b5132 RH |
321 | input_line_pointer++; |
322 | SKIP_WHITESPACE (); | |
e13bab5a AM |
323 | |
324 | if (*input_line_pointer == '"') | |
252b5132 | 325 | { |
e13bab5a AM |
326 | /* For sparc. Accept .common symbol, length, "bss" */ |
327 | input_line_pointer++; | |
328 | /* Some use the dot, some don't. */ | |
329 | if (*input_line_pointer == '.') | |
330 | input_line_pointer++; | |
331 | /* Some say data, some say bss. */ | |
332 | if (strncmp (input_line_pointer, "bss\"", 4) == 0) | |
333 | input_line_pointer += 4; | |
334 | else if (strncmp (input_line_pointer, "data\"", 5) == 0) | |
335 | input_line_pointer += 5; | |
336 | else | |
252b5132 | 337 | { |
e13bab5a AM |
338 | char *p = input_line_pointer; |
339 | char c; | |
340 | ||
341 | while (*--p != '"') | |
342 | ; | |
343 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
344 | if (*input_line_pointer++ == '"') | |
345 | break; | |
346 | c = *input_line_pointer; | |
347 | *input_line_pointer = '\0'; | |
348 | as_bad (_("bad .common segment %s"), p); | |
349 | *input_line_pointer = c; | |
350 | ignore_rest_of_line (); | |
351 | return NULL; | |
252b5132 | 352 | } |
e13bab5a AM |
353 | /* ??? Don't ask me why these are always global. */ |
354 | is_local = 0; | |
252b5132 RH |
355 | } |
356 | else | |
357 | { | |
e13bab5a AM |
358 | input_line_pointer = save; |
359 | align = parse_align (is_local); | |
360 | if (align == (addressT) -1) | |
361 | return NULL; | |
252b5132 RH |
362 | } |
363 | } | |
e13bab5a AM |
364 | |
365 | if (is_local) | |
366 | { | |
367 | bss_alloc (symbolP, size, align); | |
368 | S_CLEAR_EXTERNAL (symbolP); | |
369 | } | |
252b5132 RH |
370 | else |
371 | { | |
e13bab5a AM |
372 | S_SET_VALUE (symbolP, size); |
373 | S_SET_ALIGN (symbolP, align); | |
374 | S_SET_EXTERNAL (symbolP); | |
3b22753a | 375 | S_SET_SEGMENT (symbolP, elf_com_section_ptr); |
252b5132 RH |
376 | } |
377 | ||
49309057 | 378 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; |
252b5132 | 379 | |
13ae64f3 | 380 | return symbolP; |
252b5132 RH |
381 | } |
382 | ||
13ae64f3 | 383 | void |
dbe2df79 | 384 | obj_elf_common (int is_common) |
13ae64f3 | 385 | { |
e13bab5a AM |
386 | if (flag_mri && is_common) |
387 | s_mri_common (0); | |
388 | else | |
389 | s_comm_internal (0, elf_common_parse); | |
13ae64f3 JJ |
390 | } |
391 | ||
392 | static void | |
dbe2df79 | 393 | obj_elf_tls_common (int ignore ATTRIBUTE_UNUSED) |
13ae64f3 | 394 | { |
e13bab5a | 395 | symbolS *symbolP = s_comm_internal (0, elf_common_parse); |
13ae64f3 JJ |
396 | |
397 | if (symbolP) | |
398 | symbol_get_bfdsym (symbolP)->flags |= BSF_THREAD_LOCAL; | |
399 | } | |
400 | ||
13c56984 AM |
401 | static void |
402 | obj_elf_lcomm (int ignore ATTRIBUTE_UNUSED) | |
403 | { | |
404 | symbolS *symbolP = s_comm_internal (0, s_lcomm_internal); | |
405 | ||
406 | if (symbolP) | |
407 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; | |
408 | } | |
409 | ||
6e8bd58f NS |
410 | static symbolS * |
411 | get_sym_from_input_line_and_check (void) | |
412 | { | |
413 | char *name; | |
414 | char c; | |
415 | symbolS *sym; | |
416 | ||
d02603dc | 417 | c = get_symbol_name (& name); |
6e8bd58f NS |
418 | sym = symbol_find_or_make (name); |
419 | *input_line_pointer = c; | |
d02603dc | 420 | SKIP_WHITESPACE_AFTER_NAME (); |
6e8bd58f NS |
421 | |
422 | /* There is no symbol name if input_line_pointer has not moved. */ | |
423 | if (name == input_line_pointer) | |
424 | as_bad (_("Missing symbol name in directive")); | |
425 | return sym; | |
426 | } | |
427 | ||
252b5132 | 428 | static void |
dbe2df79 | 429 | obj_elf_local (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 430 | { |
252b5132 RH |
431 | int c; |
432 | symbolS *symbolP; | |
433 | ||
434 | do | |
435 | { | |
01642c12 | 436 | symbolP = get_sym_from_input_line_and_check (); |
6e8bd58f | 437 | c = *input_line_pointer; |
252b5132 | 438 | S_CLEAR_EXTERNAL (symbolP); |
49309057 | 439 | symbol_get_obj (symbolP)->local = 1; |
252b5132 RH |
440 | if (c == ',') |
441 | { | |
442 | input_line_pointer++; | |
443 | SKIP_WHITESPACE (); | |
444 | if (*input_line_pointer == '\n') | |
445 | c = '\n'; | |
446 | } | |
447 | } | |
448 | while (c == ','); | |
449 | demand_empty_rest_of_line (); | |
450 | } | |
451 | ||
452 | static void | |
dbe2df79 | 453 | obj_elf_weak (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 454 | { |
252b5132 RH |
455 | int c; |
456 | symbolS *symbolP; | |
457 | ||
458 | do | |
459 | { | |
01642c12 | 460 | symbolP = get_sym_from_input_line_and_check (); |
6e8bd58f | 461 | c = *input_line_pointer; |
252b5132 | 462 | S_SET_WEAK (symbolP); |
252b5132 RH |
463 | if (c == ',') |
464 | { | |
465 | input_line_pointer++; | |
466 | SKIP_WHITESPACE (); | |
467 | if (*input_line_pointer == '\n') | |
468 | c = '\n'; | |
469 | } | |
470 | } | |
471 | while (c == ','); | |
472 | demand_empty_rest_of_line (); | |
473 | } | |
474 | ||
2e13b764 | 475 | static void |
dbe2df79 | 476 | obj_elf_visibility (int visibility) |
2e13b764 | 477 | { |
2e13b764 NC |
478 | int c; |
479 | symbolS *symbolP; | |
480 | asymbol *bfdsym; | |
481 | elf_symbol_type *elfsym; | |
482 | ||
483 | do | |
484 | { | |
6e8bd58f | 485 | symbolP = get_sym_from_input_line_and_check (); |
fa306131 | 486 | |
2e13b764 NC |
487 | bfdsym = symbol_get_bfdsym (symbolP); |
488 | elfsym = elf_symbol_from (bfd_asymbol_bfd (bfdsym), bfdsym); | |
fa306131 | 489 | |
9c2799c2 | 490 | gas_assert (elfsym); |
fa306131 | 491 | |
20e420c2 RH |
492 | elfsym->internal_elf_sym.st_other &= ~3; |
493 | elfsym->internal_elf_sym.st_other |= visibility; | |
fa306131 | 494 | |
6e8bd58f | 495 | c = *input_line_pointer; |
2e13b764 NC |
496 | if (c == ',') |
497 | { | |
498 | input_line_pointer ++; | |
fa306131 | 499 | |
2e13b764 | 500 | SKIP_WHITESPACE (); |
fa306131 | 501 | |
2e13b764 NC |
502 | if (*input_line_pointer == '\n') |
503 | c = '\n'; | |
504 | } | |
505 | } | |
506 | while (c == ','); | |
fa306131 | 507 | |
2e13b764 NC |
508 | demand_empty_rest_of_line (); |
509 | } | |
510 | ||
252b5132 RH |
511 | static segT previous_section; |
512 | static int previous_subsection; | |
513 | ||
9de8d8f1 RH |
514 | struct section_stack |
515 | { | |
516 | struct section_stack *next; | |
517 | segT seg, prev_seg; | |
518 | int subseg, prev_subseg; | |
519 | }; | |
520 | ||
521 | static struct section_stack *section_stack; | |
522 | ||
a91e1603 L |
523 | /* Match both section group name and the sh_info field. */ |
524 | struct section_match | |
525 | { | |
526 | const char *group_name; | |
527 | unsigned int info; | |
528 | }; | |
529 | ||
fafe6678 | 530 | static bfd_boolean |
86654c12 L |
531 | get_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *inf) |
532 | { | |
a91e1603 L |
533 | struct section_match *match = (struct section_match *) inf; |
534 | const char *gname = match->group_name; | |
86654c12 | 535 | const char *group_name = elf_group_name (sec); |
a91e1603 | 536 | unsigned int info = elf_section_data (sec)->this_hdr.sh_info; |
01fb1836 | 537 | |
a91e1603 L |
538 | return (info == match->info |
539 | && (group_name == gname | |
540 | || (group_name != NULL | |
541 | && gname != NULL | |
542 | && strcmp (group_name, gname) == 0))); | |
86654c12 L |
543 | } |
544 | ||
252b5132 RH |
545 | /* Handle the .section pseudo-op. This code supports two different |
546 | syntaxes. | |
547 | ||
548 | The first is found on Solaris, and looks like | |
549 | .section ".sec1",#alloc,#execinstr,#write | |
550 | Here the names after '#' are the SHF_* flags to turn on for the | |
551 | section. I'm not sure how it determines the SHT_* type (BFD | |
552 | doesn't really give us control over the type, anyhow). | |
553 | ||
554 | The second format is found on UnixWare, and probably most SVR4 | |
555 | machines, and looks like | |
556 | .section .sec1,"a",@progbits | |
557 | The quoted string may contain any combination of a, w, x, and | |
558 | represents the SHF_* flags to turn on for the section. The string | |
559 | beginning with '@' can be progbits or nobits. There should be | |
560 | other possibilities, but I don't know what they are. In any case, | |
561 | BFD doesn't really let us set the section type. */ | |
562 | ||
cca86cc8 | 563 | void |
dbe2df79 | 564 | obj_elf_change_section (const char *name, |
9fb71ee4 | 565 | unsigned int type, |
a91e1603 | 566 | unsigned int info, |
01e1a5bc | 567 | bfd_vma attr, |
dbe2df79 AM |
568 | int entsize, |
569 | const char *group_name, | |
570 | int linkonce, | |
571 | int push) | |
252b5132 | 572 | { |
fafe6678 | 573 | asection *old_sec; |
252b5132 | 574 | segT sec; |
742f45cf | 575 | flagword flags; |
551b43fd | 576 | const struct elf_backend_data *bed; |
f61e8019 | 577 | const struct bfd_elf_special_section *ssect; |
a91e1603 | 578 | struct section_match match; |
252b5132 RH |
579 | |
580 | #ifdef md_flush_pending_output | |
581 | md_flush_pending_output (); | |
582 | #endif | |
583 | ||
9de8d8f1 RH |
584 | /* Switch to the section, creating it if necessary. */ |
585 | if (push) | |
586 | { | |
587 | struct section_stack *elt; | |
325801bd | 588 | elt = XNEW (struct section_stack); |
9de8d8f1 RH |
589 | elt->next = section_stack; |
590 | elt->seg = now_seg; | |
591 | elt->prev_seg = previous_section; | |
592 | elt->subseg = now_subseg; | |
593 | elt->prev_subseg = previous_subsection; | |
594 | section_stack = elt; | |
595 | } | |
596 | previous_section = now_seg; | |
597 | previous_subsection = now_subseg; | |
598 | ||
a91e1603 L |
599 | match.group_name = group_name; |
600 | match.info = info; | |
fafe6678 | 601 | old_sec = bfd_get_section_by_name_if (stdoutput, name, get_section, |
a91e1603 | 602 | (void *) &match); |
fafe6678 | 603 | if (old_sec) |
86654c12 | 604 | { |
fafe6678 | 605 | sec = old_sec; |
86654c12 L |
606 | subseg_set (sec, 0); |
607 | } | |
608 | else | |
609 | sec = subseg_force_new (name, 0); | |
610 | ||
551b43fd AM |
611 | bed = get_elf_backend_data (stdoutput); |
612 | ssect = (*bed->get_sec_type_attr) (stdoutput, sec); | |
9de8d8f1 | 613 | |
f61e8019 | 614 | if (ssect != NULL) |
2f89ff8d | 615 | { |
ea8f8eab L |
616 | bfd_boolean override = FALSE; |
617 | ||
2f89ff8d | 618 | if (type == SHT_NULL) |
f61e8019 AM |
619 | type = ssect->type; |
620 | else if (type != ssect->type) | |
2f89ff8d | 621 | { |
fafe6678 | 622 | if (old_sec == NULL |
23ddb850 | 623 | /* Some older versions of gcc will emit |
7ed1d346 | 624 | |
2f89ff8d | 625 | .section .init_array,"aw",@progbits |
7ed1d346 | 626 | |
2f89ff8d | 627 | for __attribute__ ((section (".init_array"))). |
3b22753a | 628 | "@progbits" is incorrect. Also for x86-64 large bss |
23ddb850 | 629 | sections, some older versions of gcc will emit |
3b22753a L |
630 | |
631 | .section .lbss,"aw",@progbits | |
632 | ||
2f89ff8d | 633 | "@progbits" is incorrect. */ |
3b22753a L |
634 | #ifdef TC_I386 |
635 | && (bed->s->arch_size != 64 | |
636 | || !(ssect->attr & SHF_X86_64_LARGE)) | |
637 | #endif | |
f61e8019 AM |
638 | && ssect->type != SHT_INIT_ARRAY |
639 | && ssect->type != SHT_FINI_ARRAY | |
640 | && ssect->type != SHT_PREINIT_ARRAY) | |
2f89ff8d L |
641 | { |
642 | /* We allow to specify any type for a .note section. */ | |
9fb71ee4 NC |
643 | if (ssect->type != SHT_NOTE |
644 | /* Processor and application defined types are allowed too. */ | |
645 | && type < SHT_LOPROC) | |
2f89ff8d L |
646 | as_warn (_("setting incorrect section type for %s"), |
647 | name); | |
648 | } | |
649 | else | |
650 | { | |
651 | as_warn (_("ignoring incorrect section type for %s"), | |
742f45cf | 652 | name); |
f61e8019 | 653 | type = ssect->type; |
2f89ff8d L |
654 | } |
655 | } | |
656 | ||
9fb71ee4 NC |
657 | if (old_sec == NULL && ((attr & ~(SHF_MASKOS | SHF_MASKPROC)) |
658 | & ~ssect->attr) != 0) | |
2f89ff8d L |
659 | { |
660 | /* As a GNU extension, we permit a .note section to be | |
f61e8019 | 661 | allocatable. If the linker sees an allocatable .note |
2f89ff8d | 662 | section, it will create a PT_NOTE segment in the output |
92191b29 | 663 | file. We also allow "x" for .note.GNU-stack. */ |
f61e8019 AM |
664 | if (ssect->type == SHT_NOTE |
665 | && (attr == SHF_ALLOC || attr == SHF_EXECINSTR)) | |
666 | ; | |
667 | /* Allow different SHF_MERGE and SHF_STRINGS if we have | |
668 | something like .rodata.str. */ | |
669 | else if (ssect->suffix_length == -2 | |
670 | && name[ssect->prefix_length] == '.' | |
ea8f8eab L |
671 | && (attr |
672 | & ~ssect->attr | |
673 | & ~SHF_MERGE | |
674 | & ~SHF_STRINGS) == 0) | |
f61e8019 | 675 | ; |
ea8f8eab L |
676 | /* .interp, .strtab and .symtab can have SHF_ALLOC. */ |
677 | else if (attr == SHF_ALLOC | |
678 | && (strcmp (name, ".interp") == 0 | |
679 | || strcmp (name, ".strtab") == 0 | |
680 | || strcmp (name, ".symtab") == 0)) | |
681 | override = TRUE; | |
b9f18452 L |
682 | /* .note.GNU-stack can have SHF_EXECINSTR. */ |
683 | else if (attr == SHF_EXECINSTR | |
684 | && strcmp (name, ".note.GNU-stack") == 0) | |
685 | override = TRUE; | |
7f841127 L |
686 | #ifdef TC_ALPHA |
687 | /* A section on Alpha may have SHF_ALPHA_GPREL. */ | |
688 | else if ((attr & ~ssect->attr) == SHF_ALPHA_GPREL) | |
689 | override = TRUE; | |
708e2187 NC |
690 | #endif |
691 | #ifdef TC_RX | |
692 | else if (attr == (SHF_EXECINSTR | SHF_WRITE | SHF_ALLOC) | |
693 | && (ssect->type == SHT_INIT_ARRAY | |
694 | || ssect->type == SHT_FINI_ARRAY | |
695 | || ssect->type == SHT_PREINIT_ARRAY)) | |
696 | /* RX init/fini arrays can and should have the "awx" attributes set. */ | |
697 | ; | |
7f841127 | 698 | #endif |
f61e8019 | 699 | else |
ea8f8eab | 700 | { |
86654c12 L |
701 | if (group_name == NULL) |
702 | as_warn (_("setting incorrect section attributes for %s"), | |
703 | name); | |
ea8f8eab L |
704 | override = TRUE; |
705 | } | |
2f89ff8d | 706 | } |
9fb71ee4 | 707 | |
fafe6678 | 708 | if (!override && old_sec == NULL) |
f61e8019 | 709 | attr |= ssect->attr; |
2f89ff8d | 710 | } |
742f45cf | 711 | |
a91e1603 L |
712 | if ((attr & (SHF_ALLOC | SHF_GNU_MBIND)) == SHF_GNU_MBIND) |
713 | as_fatal (_("SHF_ALLOC isn't set for GNU_MBIND section: %s"), name); | |
714 | ||
742f45cf AM |
715 | /* Convert ELF type and flags to BFD flags. */ |
716 | flags = (SEC_RELOC | |
717 | | ((attr & SHF_WRITE) ? 0 : SEC_READONLY) | |
718 | | ((attr & SHF_ALLOC) ? SEC_ALLOC : 0) | |
719 | | (((attr & SHF_ALLOC) && type != SHT_NOBITS) ? SEC_LOAD : 0) | |
f5fa8ca2 JJ |
720 | | ((attr & SHF_EXECINSTR) ? SEC_CODE : 0) |
721 | | ((attr & SHF_MERGE) ? SEC_MERGE : 0) | |
13ae64f3 | 722 | | ((attr & SHF_STRINGS) ? SEC_STRINGS : 0) |
18ae9cc1 | 723 | | ((attr & SHF_EXCLUDE) ? SEC_EXCLUDE: 0) |
13ae64f3 | 724 | | ((attr & SHF_TLS) ? SEC_THREAD_LOCAL : 0)); |
9de8d8f1 | 725 | #ifdef md_elf_section_flags |
742f45cf | 726 | flags = md_elf_section_flags (flags, attr, type); |
9de8d8f1 RH |
727 | #endif |
728 | ||
86654c12 L |
729 | if (linkonce) |
730 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
731 | ||
fafe6678 | 732 | if (old_sec == NULL) |
742f45cf AM |
733 | { |
734 | symbolS *secsym; | |
735 | ||
94be91de JB |
736 | if (type == SHT_NULL) |
737 | type = bfd_elf_get_default_section_type (flags); | |
7a6d0b32 JB |
738 | elf_section_type (sec) = type; |
739 | elf_section_flags (sec) = attr; | |
a91e1603 | 740 | elf_section_data (sec)->this_hdr.sh_info = info; |
7a6d0b32 | 741 | |
9de8d8f1 RH |
742 | /* Prevent SEC_HAS_CONTENTS from being inadvertently set. */ |
743 | if (type == SHT_NOBITS) | |
13c56984 | 744 | seg_info (sec)->bss = 1; |
9de8d8f1 RH |
745 | |
746 | bfd_set_section_flags (stdoutput, sec, flags); | |
f5fa8ca2 JJ |
747 | if (flags & SEC_MERGE) |
748 | sec->entsize = entsize; | |
aa1f4858 | 749 | elf_group_name (sec) = group_name; |
9de8d8f1 RH |
750 | |
751 | /* Add a symbol for this section to the symbol table. */ | |
752 | secsym = symbol_find (name); | |
753 | if (secsym != NULL) | |
754 | symbol_set_bfdsym (secsym, sec->symbol); | |
755 | else | |
13c56984 | 756 | symbol_table_insert (section_symbol (sec)); |
9de8d8f1 | 757 | } |
7a6d0b32 | 758 | else |
742f45cf | 759 | { |
7a6d0b32 JB |
760 | if (type != SHT_NULL |
761 | && (unsigned) type != elf_section_type (old_sec)) | |
762 | as_warn (_("ignoring changed section type for %s"), name); | |
763 | ||
764 | if (attr != 0) | |
765 | { | |
766 | /* If section attributes are specified the second time we see a | |
767 | particular section, then check that they are the same as we | |
768 | saw the first time. */ | |
769 | if (((old_sec->flags ^ flags) | |
770 | & (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE | |
771 | | SEC_EXCLUDE | SEC_SORT_ENTRIES | SEC_MERGE | SEC_STRINGS | |
772 | | SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD | |
773 | | SEC_THREAD_LOCAL))) | |
774 | as_warn (_("ignoring changed section attributes for %s"), name); | |
9fb71ee4 NC |
775 | else |
776 | /* FIXME: Maybe we should consider removing a previously set | |
777 | processor or application specific attribute as suspicious ? */ | |
778 | elf_section_flags (sec) = attr; | |
779 | ||
7a6d0b32 JB |
780 | if ((flags & SEC_MERGE) && old_sec->entsize != (unsigned) entsize) |
781 | as_warn (_("ignoring changed section entity size for %s"), name); | |
782 | } | |
742f45cf | 783 | } |
9de8d8f1 RH |
784 | |
785 | #ifdef md_elf_section_change_hook | |
742f45cf | 786 | md_elf_section_change_hook (); |
9de8d8f1 RH |
787 | #endif |
788 | } | |
789 | ||
01e1a5bc | 790 | static bfd_vma |
f6616a06 | 791 | obj_elf_parse_section_letters (char *str, size_t len, bfd_boolean *is_clone) |
9de8d8f1 | 792 | { |
01e1a5bc | 793 | bfd_vma attr = 0; |
f6616a06 | 794 | *is_clone = FALSE; |
9de8d8f1 RH |
795 | |
796 | while (len > 0) | |
797 | { | |
798 | switch (*str) | |
799 | { | |
800 | case 'a': | |
801 | attr |= SHF_ALLOC; | |
802 | break; | |
18ae9cc1 L |
803 | case 'e': |
804 | attr |= SHF_EXCLUDE; | |
805 | break; | |
9de8d8f1 RH |
806 | case 'w': |
807 | attr |= SHF_WRITE; | |
808 | break; | |
809 | case 'x': | |
810 | attr |= SHF_EXECINSTR; | |
811 | break; | |
9469ddf0 | 812 | case 'M': |
f5fa8ca2 JJ |
813 | attr |= SHF_MERGE; |
814 | break; | |
9469ddf0 | 815 | case 'S': |
f5fa8ca2 JJ |
816 | attr |= SHF_STRINGS; |
817 | break; | |
060adf0e AM |
818 | case 'G': |
819 | attr |= SHF_GROUP; | |
820 | break; | |
13ae64f3 JJ |
821 | case 'T': |
822 | attr |= SHF_TLS; | |
823 | break; | |
a91e1603 L |
824 | case 'd': |
825 | attr |= SHF_GNU_MBIND; | |
826 | break; | |
01642c12 | 827 | case '?': |
f6616a06 | 828 | *is_clone = TRUE; |
01642c12 | 829 | break; |
34105363 L |
830 | /* Compatibility. */ |
831 | case 'm': | |
832 | if (*(str - 1) == 'a') | |
833 | { | |
834 | attr |= SHF_MERGE; | |
835 | if (len > 1 && str[1] == 's') | |
836 | { | |
837 | attr |= SHF_STRINGS; | |
838 | str++, len--; | |
839 | } | |
840 | break; | |
841 | } | |
1a0670f3 | 842 | /* Fall through. */ |
9de8d8f1 RH |
843 | default: |
844 | { | |
6d4af3c2 AM |
845 | const char *bad_msg = _("unrecognized .section attribute:" |
846 | " want a,e,w,x,M,S,G,T or number"); | |
9de8d8f1 | 847 | #ifdef md_elf_section_letter |
01e1a5bc | 848 | bfd_vma md_attr = md_elf_section_letter (*str, &bad_msg); |
8f3bae45 | 849 | if (md_attr != (bfd_vma) -1) |
9de8d8f1 RH |
850 | attr |= md_attr; |
851 | else | |
852 | #endif | |
9fb71ee4 NC |
853 | if (ISDIGIT (*str)) |
854 | { | |
855 | char * end; | |
856 | ||
857 | attr |= strtoul (str, & end, 0); | |
858 | /* Update str and len, allowing for the fact that | |
859 | we will execute str++ and len-- below. */ | |
860 | end --; | |
861 | len -= (end - str); | |
862 | str = end; | |
863 | } | |
864 | else | |
865 | as_fatal ("%s", bad_msg); | |
9de8d8f1 RH |
866 | } |
867 | break; | |
868 | } | |
869 | str++, len--; | |
870 | } | |
871 | ||
872 | return attr; | |
873 | } | |
874 | ||
8d28c9d7 | 875 | static int |
44bf2362 | 876 | obj_elf_section_type (char *str, size_t len, bfd_boolean warn) |
9de8d8f1 RH |
877 | { |
878 | if (len == 8 && strncmp (str, "progbits", 8) == 0) | |
879 | return SHT_PROGBITS; | |
880 | if (len == 6 && strncmp (str, "nobits", 6) == 0) | |
881 | return SHT_NOBITS; | |
34f70875 L |
882 | if (len == 4 && strncmp (str, "note", 4) == 0) |
883 | return SHT_NOTE; | |
10b016c2 PB |
884 | if (len == 10 && strncmp (str, "init_array", 10) == 0) |
885 | return SHT_INIT_ARRAY; | |
886 | if (len == 10 && strncmp (str, "fini_array", 10) == 0) | |
887 | return SHT_FINI_ARRAY; | |
888 | if (len == 13 && strncmp (str, "preinit_array", 13) == 0) | |
889 | return SHT_PREINIT_ARRAY; | |
9de8d8f1 RH |
890 | |
891 | #ifdef md_elf_section_type | |
892 | { | |
893 | int md_type = md_elf_section_type (str, len); | |
894 | if (md_type >= 0) | |
895 | return md_type; | |
896 | } | |
897 | #endif | |
898 | ||
9fb71ee4 NC |
899 | if (ISDIGIT (*str)) |
900 | { | |
901 | char * end; | |
902 | int type = strtoul (str, & end, 0); | |
903 | ||
904 | if (warn && (size_t) (end - str) != len) | |
905 | as_warn (_("extraneous characters at end of numeric section type")); | |
906 | ||
907 | return type; | |
908 | } | |
909 | ||
44bf2362 NC |
910 | if (warn) |
911 | as_warn (_("unrecognized section type")); | |
912 | return 0; | |
913 | } | |
914 | ||
01e1a5bc | 915 | static bfd_vma |
44bf2362 NC |
916 | obj_elf_section_word (char *str, size_t len, int *type) |
917 | { | |
918 | int ret; | |
919 | ||
920 | if (len == 5 && strncmp (str, "write", 5) == 0) | |
921 | return SHF_WRITE; | |
922 | if (len == 5 && strncmp (str, "alloc", 5) == 0) | |
923 | return SHF_ALLOC; | |
924 | if (len == 9 && strncmp (str, "execinstr", 9) == 0) | |
925 | return SHF_EXECINSTR; | |
18ae9cc1 L |
926 | if (len == 7 && strncmp (str, "exclude", 7) == 0) |
927 | return SHF_EXCLUDE; | |
44bf2362 NC |
928 | if (len == 3 && strncmp (str, "tls", 3) == 0) |
929 | return SHF_TLS; | |
930 | ||
931 | #ifdef md_elf_section_word | |
932 | { | |
01e1a5bc NC |
933 | bfd_vma md_attr = md_elf_section_word (str, len); |
934 | if (md_attr > 0) | |
44bf2362 NC |
935 | return md_attr; |
936 | } | |
937 | #endif | |
938 | ||
939 | ret = obj_elf_section_type (str, len, FALSE); | |
940 | if (ret != 0) | |
941 | *type = ret; | |
942 | else | |
943 | as_warn (_("unrecognized section attribute")); | |
944 | ||
9de8d8f1 RH |
945 | return 0; |
946 | } | |
947 | ||
6ce8b369 | 948 | /* Get name of section. */ |
82b8a785 | 949 | const char * |
dbe2df79 | 950 | obj_elf_section_name (void) |
6ce8b369 AM |
951 | { |
952 | char *name; | |
953 | ||
954 | SKIP_WHITESPACE (); | |
955 | if (*input_line_pointer == '"') | |
956 | { | |
957 | int dummy; | |
958 | ||
959 | name = demand_copy_C_string (&dummy); | |
960 | if (name == NULL) | |
961 | { | |
962 | ignore_rest_of_line (); | |
963 | return NULL; | |
964 | } | |
965 | } | |
966 | else | |
967 | { | |
968 | char *end = input_line_pointer; | |
969 | ||
970 | while (0 == strchr ("\n\t,; ", *end)) | |
971 | end++; | |
972 | if (end == input_line_pointer) | |
973 | { | |
c95b35a9 | 974 | as_bad (_("missing name")); |
6ce8b369 AM |
975 | ignore_rest_of_line (); |
976 | return NULL; | |
977 | } | |
978 | ||
29a2809e | 979 | name = xmemdup0 (input_line_pointer, end - input_line_pointer); |
451133ce NP |
980 | |
981 | while (flag_sectname_subst) | |
982 | { | |
983 | char *subst = strchr (name, '%'); | |
984 | if (subst && subst[1] == 'S') | |
985 | { | |
986 | int oldlen = strlen (name); | |
987 | int substlen = strlen (now_seg->name); | |
988 | int newlen = oldlen - 2 + substlen; | |
add39d23 | 989 | char *newname = XNEWVEC (char, newlen + 1); |
451133ce NP |
990 | int headlen = subst - name; |
991 | memcpy (newname, name, headlen); | |
992 | strcpy (newname + headlen, now_seg->name); | |
993 | strcat (newname + headlen, subst + 2); | |
994 | xfree (name); | |
995 | name = newname; | |
996 | } | |
997 | else | |
998 | break; | |
999 | } | |
1000 | ||
612d7b83 L |
1001 | #ifdef tc_canonicalize_section_name |
1002 | name = tc_canonicalize_section_name (name); | |
1003 | #endif | |
6ce8b369 AM |
1004 | input_line_pointer = end; |
1005 | } | |
1006 | SKIP_WHITESPACE (); | |
1007 | return name; | |
1008 | } | |
1009 | ||
9de8d8f1 | 1010 | void |
dbe2df79 | 1011 | obj_elf_section (int push) |
9de8d8f1 | 1012 | { |
82b8a785 TS |
1013 | const char *name, *group_name; |
1014 | char *beg; | |
01e1a5bc NC |
1015 | int type, dummy; |
1016 | bfd_vma attr; | |
f5fa8ca2 | 1017 | int entsize; |
d2dab548 | 1018 | int linkonce; |
6f932bce | 1019 | subsegT new_subsection = -1; |
a91e1603 | 1020 | unsigned int info = 0; |
9de8d8f1 | 1021 | |
5b93d8bb | 1022 | #ifndef TC_I370 |
252b5132 RH |
1023 | if (flag_mri) |
1024 | { | |
1025 | char mri_type; | |
1026 | ||
9de8d8f1 | 1027 | #ifdef md_flush_pending_output |
60bcf0fa | 1028 | md_flush_pending_output (); |
9de8d8f1 RH |
1029 | #endif |
1030 | ||
252b5132 RH |
1031 | previous_section = now_seg; |
1032 | previous_subsection = now_subseg; | |
1033 | ||
1034 | s_mri_sect (&mri_type); | |
1035 | ||
1036 | #ifdef md_elf_section_change_hook | |
1037 | md_elf_section_change_hook (); | |
1038 | #endif | |
1039 | ||
1040 | return; | |
1041 | } | |
5b93d8bb | 1042 | #endif /* ! defined (TC_I370) */ |
252b5132 | 1043 | |
6ce8b369 AM |
1044 | name = obj_elf_section_name (); |
1045 | if (name == NULL) | |
1046 | return; | |
252b5132 RH |
1047 | type = SHT_NULL; |
1048 | attr = 0; | |
aa1f4858 | 1049 | group_name = NULL; |
f5fa8ca2 | 1050 | entsize = 0; |
d2dab548 | 1051 | linkonce = 0; |
252b5132 RH |
1052 | |
1053 | if (*input_line_pointer == ',') | |
1054 | { | |
1055 | /* Skip the comma. */ | |
1056 | ++input_line_pointer; | |
252b5132 RH |
1057 | SKIP_WHITESPACE (); |
1058 | ||
9cfc3331 | 1059 | if (push && ISDIGIT (*input_line_pointer)) |
6f932bce | 1060 | { |
9cfc3331 | 1061 | /* .pushsection has an optional subsection. */ |
6f932bce | 1062 | new_subsection = (subsegT) get_absolute_expression (); |
9cfc3331 L |
1063 | |
1064 | SKIP_WHITESPACE (); | |
1065 | ||
1066 | /* Stop if we don't see a comma. */ | |
1067 | if (*input_line_pointer != ',') | |
1068 | goto done; | |
1069 | ||
1070 | /* Skip the comma. */ | |
1071 | ++input_line_pointer; | |
1072 | SKIP_WHITESPACE (); | |
6f932bce | 1073 | } |
9cfc3331 L |
1074 | |
1075 | if (*input_line_pointer == '"') | |
252b5132 | 1076 | { |
f6616a06 | 1077 | bfd_boolean is_clone; |
01642c12 | 1078 | |
9de8d8f1 RH |
1079 | beg = demand_copy_C_string (&dummy); |
1080 | if (beg == NULL) | |
252b5132 | 1081 | { |
9de8d8f1 RH |
1082 | ignore_rest_of_line (); |
1083 | return; | |
252b5132 | 1084 | } |
f6616a06 | 1085 | attr |= obj_elf_parse_section_letters (beg, strlen (beg), &is_clone); |
252b5132 RH |
1086 | |
1087 | SKIP_WHITESPACE (); | |
1088 | if (*input_line_pointer == ',') | |
1089 | { | |
9de8d8f1 | 1090 | char c; |
060adf0e AM |
1091 | char *save = input_line_pointer; |
1092 | ||
252b5132 RH |
1093 | ++input_line_pointer; |
1094 | SKIP_WHITESPACE (); | |
9de8d8f1 RH |
1095 | c = *input_line_pointer; |
1096 | if (c == '"') | |
252b5132 | 1097 | { |
9de8d8f1 RH |
1098 | beg = demand_copy_C_string (&dummy); |
1099 | if (beg == NULL) | |
252b5132 | 1100 | { |
9de8d8f1 RH |
1101 | ignore_rest_of_line (); |
1102 | return; | |
252b5132 | 1103 | } |
44bf2362 | 1104 | type = obj_elf_section_type (beg, strlen (beg), TRUE); |
9de8d8f1 RH |
1105 | } |
1106 | else if (c == '@' || c == '%') | |
1107 | { | |
d02603dc | 1108 | ++input_line_pointer; |
9fb71ee4 NC |
1109 | |
1110 | if (ISDIGIT (* input_line_pointer)) | |
1111 | { | |
1112 | type = strtoul (input_line_pointer, & input_line_pointer, 0); | |
1113 | } | |
1114 | else | |
1115 | { | |
1116 | c = get_symbol_name (& beg); | |
1117 | (void) restore_line_pointer (c); | |
1118 | type = obj_elf_section_type (beg, input_line_pointer - beg, TRUE); | |
1119 | } | |
252b5132 | 1120 | } |
060adf0e AM |
1121 | else |
1122 | input_line_pointer = save; | |
252b5132 | 1123 | } |
f5fa8ca2 JJ |
1124 | |
1125 | SKIP_WHITESPACE (); | |
6ce8b369 | 1126 | if ((attr & SHF_MERGE) != 0 && *input_line_pointer == ',') |
f5fa8ca2 JJ |
1127 | { |
1128 | ++input_line_pointer; | |
1129 | SKIP_WHITESPACE (); | |
1130 | entsize = get_absolute_expression (); | |
6ce8b369 | 1131 | SKIP_WHITESPACE (); |
f5fa8ca2 JJ |
1132 | if (entsize < 0) |
1133 | { | |
6ce8b369 | 1134 | as_warn (_("invalid merge entity size")); |
f5fa8ca2 JJ |
1135 | attr &= ~SHF_MERGE; |
1136 | entsize = 0; | |
1137 | } | |
1138 | } | |
6ce8b369 AM |
1139 | else if ((attr & SHF_MERGE) != 0) |
1140 | { | |
1141 | as_warn (_("entity size for SHF_MERGE not specified")); | |
1142 | attr &= ~SHF_MERGE; | |
1143 | } | |
060adf0e | 1144 | |
f6616a06 | 1145 | if ((attr & SHF_GROUP) != 0 && is_clone) |
01642c12 RM |
1146 | { |
1147 | as_warn (_("? section flag ignored with G present")); | |
f6616a06 | 1148 | is_clone = FALSE; |
01642c12 | 1149 | } |
060adf0e AM |
1150 | if ((attr & SHF_GROUP) != 0 && *input_line_pointer == ',') |
1151 | { | |
1152 | ++input_line_pointer; | |
aa1f4858 AM |
1153 | group_name = obj_elf_section_name (); |
1154 | if (group_name == NULL) | |
060adf0e | 1155 | attr &= ~SHF_GROUP; |
59365e19 | 1156 | else if (*input_line_pointer == ',') |
d2dab548 | 1157 | { |
59365e19 AM |
1158 | ++input_line_pointer; |
1159 | SKIP_WHITESPACE (); | |
1160 | if (strncmp (input_line_pointer, "comdat", 6) == 0) | |
1161 | { | |
1162 | input_line_pointer += 6; | |
1163 | linkonce = 1; | |
1164 | } | |
d2dab548 AM |
1165 | } |
1166 | else if (strncmp (name, ".gnu.linkonce", 13) == 0) | |
1167 | linkonce = 1; | |
060adf0e AM |
1168 | } |
1169 | else if ((attr & SHF_GROUP) != 0) | |
1170 | { | |
1171 | as_warn (_("group name for SHF_GROUP not specified")); | |
1172 | attr &= ~SHF_GROUP; | |
1173 | } | |
01642c12 | 1174 | |
f6616a06 | 1175 | if (is_clone) |
01642c12 RM |
1176 | { |
1177 | const char *now_group = elf_group_name (now_seg); | |
1178 | if (now_group != NULL) | |
1179 | { | |
1180 | group_name = xstrdup (now_group); | |
1181 | linkonce = (now_seg->flags & SEC_LINK_ONCE) != 0; | |
1182 | } | |
1183 | } | |
a91e1603 L |
1184 | |
1185 | if ((attr & SHF_GNU_MBIND) != 0 && *input_line_pointer == ',') | |
1186 | { | |
1187 | ++input_line_pointer; | |
1188 | SKIP_WHITESPACE (); | |
1189 | if (ISDIGIT (* input_line_pointer)) | |
1190 | { | |
1191 | char *t = input_line_pointer; | |
1192 | info = strtoul (input_line_pointer, | |
1193 | &input_line_pointer, 0); | |
1194 | if (info == (unsigned int) -1) | |
1195 | { | |
1196 | as_warn (_("unsupported mbind section info: %s"), t); | |
1197 | info = 0; | |
1198 | } | |
1199 | } | |
1200 | } | |
252b5132 RH |
1201 | } |
1202 | else | |
1203 | { | |
1204 | do | |
1205 | { | |
9de8d8f1 RH |
1206 | char c; |
1207 | ||
252b5132 RH |
1208 | SKIP_WHITESPACE (); |
1209 | if (*input_line_pointer != '#') | |
1210 | { | |
c95b35a9 | 1211 | as_bad (_("character following name is not '#'")); |
252b5132 RH |
1212 | ignore_rest_of_line (); |
1213 | return; | |
1214 | } | |
d02603dc NC |
1215 | ++input_line_pointer; |
1216 | c = get_symbol_name (& beg); | |
1217 | (void) restore_line_pointer (c); | |
9de8d8f1 | 1218 | |
44bf2362 | 1219 | attr |= obj_elf_section_word (beg, input_line_pointer - beg, & type); |
9de8d8f1 | 1220 | |
252b5132 RH |
1221 | SKIP_WHITESPACE (); |
1222 | } | |
1223 | while (*input_line_pointer++ == ','); | |
1224 | --input_line_pointer; | |
1225 | } | |
1226 | } | |
1227 | ||
9cfc3331 | 1228 | done: |
252b5132 | 1229 | demand_empty_rest_of_line (); |
9de8d8f1 | 1230 | |
a91e1603 L |
1231 | obj_elf_change_section (name, type, info, attr, entsize, group_name, |
1232 | linkonce, push); | |
6f932bce NC |
1233 | |
1234 | if (push && new_subsection != -1) | |
1235 | subseg_set (now_seg, new_subsection); | |
252b5132 RH |
1236 | } |
1237 | ||
1238 | /* Change to the .data section. */ | |
1239 | ||
16b93d88 | 1240 | void |
dbe2df79 | 1241 | obj_elf_data (int i) |
252b5132 RH |
1242 | { |
1243 | #ifdef md_flush_pending_output | |
1244 | md_flush_pending_output (); | |
1245 | #endif | |
1246 | ||
1247 | previous_section = now_seg; | |
1248 | previous_subsection = now_subseg; | |
1249 | s_data (i); | |
1250 | ||
1251 | #ifdef md_elf_section_change_hook | |
1252 | md_elf_section_change_hook (); | |
1253 | #endif | |
1254 | } | |
1255 | ||
1256 | /* Change to the .text section. */ | |
1257 | ||
16b93d88 | 1258 | void |
dbe2df79 | 1259 | obj_elf_text (int i) |
252b5132 RH |
1260 | { |
1261 | #ifdef md_flush_pending_output | |
1262 | md_flush_pending_output (); | |
1263 | #endif | |
1264 | ||
1265 | previous_section = now_seg; | |
1266 | previous_subsection = now_subseg; | |
1267 | s_text (i); | |
1268 | ||
1269 | #ifdef md_elf_section_change_hook | |
1270 | md_elf_section_change_hook (); | |
1271 | #endif | |
1272 | } | |
1273 | ||
8fe53b44 JB |
1274 | /* Change to the *ABS* section. */ |
1275 | ||
1276 | void | |
1277 | obj_elf_struct (int i) | |
1278 | { | |
1279 | #ifdef md_flush_pending_output | |
1280 | md_flush_pending_output (); | |
1281 | #endif | |
1282 | ||
1283 | previous_section = now_seg; | |
1284 | previous_subsection = now_subseg; | |
1285 | s_struct (i); | |
1286 | ||
1287 | #ifdef md_elf_section_change_hook | |
1288 | md_elf_section_change_hook (); | |
1289 | #endif | |
1290 | } | |
1291 | ||
252b5132 | 1292 | static void |
dbe2df79 | 1293 | obj_elf_subsection (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1294 | { |
6f932bce | 1295 | int temp; |
252b5132 RH |
1296 | |
1297 | #ifdef md_flush_pending_output | |
1298 | md_flush_pending_output (); | |
1299 | #endif | |
1300 | ||
1301 | previous_section = now_seg; | |
1302 | previous_subsection = now_subseg; | |
1303 | ||
1304 | temp = get_absolute_expression (); | |
1305 | subseg_set (now_seg, (subsegT) temp); | |
1306 | demand_empty_rest_of_line (); | |
1307 | ||
1308 | #ifdef md_elf_section_change_hook | |
1309 | md_elf_section_change_hook (); | |
1310 | #endif | |
1311 | } | |
1312 | ||
1313 | /* This can be called from the processor backends if they change | |
1314 | sections. */ | |
1315 | ||
1316 | void | |
dbe2df79 | 1317 | obj_elf_section_change_hook (void) |
252b5132 RH |
1318 | { |
1319 | previous_section = now_seg; | |
1320 | previous_subsection = now_subseg; | |
1321 | } | |
1322 | ||
1323 | void | |
dbe2df79 | 1324 | obj_elf_previous (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1325 | { |
9de8d8f1 RH |
1326 | segT new_section; |
1327 | int new_subsection; | |
1328 | ||
252b5132 RH |
1329 | if (previous_section == 0) |
1330 | { | |
6ce8b369 | 1331 | as_warn (_(".previous without corresponding .section; ignored")); |
252b5132 RH |
1332 | return; |
1333 | } | |
1334 | ||
1335 | #ifdef md_flush_pending_output | |
1336 | md_flush_pending_output (); | |
1337 | #endif | |
1338 | ||
9de8d8f1 RH |
1339 | new_section = previous_section; |
1340 | new_subsection = previous_subsection; | |
1341 | previous_section = now_seg; | |
1342 | previous_subsection = now_subseg; | |
1343 | subseg_set (new_section, new_subsection); | |
1344 | ||
1345 | #ifdef md_elf_section_change_hook | |
1346 | md_elf_section_change_hook (); | |
1347 | #endif | |
1348 | } | |
1349 | ||
1350 | static void | |
dbe2df79 | 1351 | obj_elf_popsection (int xxx ATTRIBUTE_UNUSED) |
9de8d8f1 RH |
1352 | { |
1353 | struct section_stack *top = section_stack; | |
1354 | ||
1355 | if (top == NULL) | |
1356 | { | |
6ce8b369 | 1357 | as_warn (_(".popsection without corresponding .pushsection; ignored")); |
9de8d8f1 RH |
1358 | return; |
1359 | } | |
1360 | ||
1361 | #ifdef md_flush_pending_output | |
1362 | md_flush_pending_output (); | |
1363 | #endif | |
1364 | ||
1365 | section_stack = top->next; | |
1366 | previous_section = top->prev_seg; | |
1367 | previous_subsection = top->prev_subseg; | |
1368 | subseg_set (top->seg, top->subseg); | |
1369 | free (top); | |
252b5132 RH |
1370 | |
1371 | #ifdef md_elf_section_change_hook | |
1372 | md_elf_section_change_hook (); | |
1373 | #endif | |
1374 | } | |
1375 | ||
1376 | static void | |
dbe2df79 | 1377 | obj_elf_line (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1378 | { |
1379 | /* Assume delimiter is part of expression. BSD4.2 as fails with | |
bf514e21 | 1380 | delightful bug, so we are not being incompatible here. */ |
dbe2df79 | 1381 | new_logical_line (NULL, get_absolute_expression ()); |
252b5132 RH |
1382 | demand_empty_rest_of_line (); |
1383 | } | |
1384 | ||
1385 | /* This handles the .symver pseudo-op, which is used to specify a | |
1386 | symbol version. The syntax is ``.symver NAME,SYMVERNAME''. | |
1387 | SYMVERNAME may contain ELF_VER_CHR ('@') characters. This | |
1388 | pseudo-op causes the assembler to emit a symbol named SYMVERNAME | |
1389 | with the same value as the symbol NAME. */ | |
1390 | ||
1391 | static void | |
dbe2df79 | 1392 | obj_elf_symver (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1393 | { |
1394 | char *name; | |
1395 | char c; | |
468cced8 | 1396 | char old_lexat; |
252b5132 RH |
1397 | symbolS *sym; |
1398 | ||
6e8bd58f | 1399 | sym = get_sym_from_input_line_and_check (); |
252b5132 | 1400 | |
252b5132 RH |
1401 | if (*input_line_pointer != ',') |
1402 | { | |
1403 | as_bad (_("expected comma after name in .symver")); | |
1404 | ignore_rest_of_line (); | |
1405 | return; | |
1406 | } | |
1407 | ||
1408 | ++input_line_pointer; | |
eba874d8 | 1409 | SKIP_WHITESPACE (); |
468cced8 AM |
1410 | |
1411 | /* Temporarily include '@' in symbol names. */ | |
1412 | old_lexat = lex_type[(unsigned char) '@']; | |
1413 | lex_type[(unsigned char) '@'] |= LEX_NAME; | |
d02603dc | 1414 | c = get_symbol_name (& name); |
468cced8 | 1415 | lex_type[(unsigned char) '@'] = old_lexat; |
252b5132 | 1416 | |
339681c0 L |
1417 | if (symbol_get_obj (sym)->versioned_name == NULL) |
1418 | { | |
1419 | symbol_get_obj (sym)->versioned_name = xstrdup (name); | |
252b5132 | 1420 | |
d02603dc | 1421 | (void) restore_line_pointer (c); |
252b5132 | 1422 | |
6f620856 L |
1423 | if (strchr (symbol_get_obj (sym)->versioned_name, |
1424 | ELF_VER_CHR) == NULL) | |
339681c0 L |
1425 | { |
1426 | as_bad (_("missing version name in `%s' for symbol `%s'"), | |
1427 | symbol_get_obj (sym)->versioned_name, | |
1428 | S_GET_NAME (sym)); | |
1429 | ignore_rest_of_line (); | |
1430 | return; | |
1431 | } | |
1432 | } | |
1433 | else | |
252b5132 | 1434 | { |
339681c0 L |
1435 | if (strcmp (symbol_get_obj (sym)->versioned_name, name)) |
1436 | { | |
1437 | as_bad (_("multiple versions [`%s'|`%s'] for symbol `%s'"), | |
1438 | name, symbol_get_obj (sym)->versioned_name, | |
1439 | S_GET_NAME (sym)); | |
1440 | ignore_rest_of_line (); | |
1441 | return; | |
1442 | } | |
1443 | ||
d02603dc | 1444 | (void) restore_line_pointer (c); |
252b5132 RH |
1445 | } |
1446 | ||
1447 | demand_empty_rest_of_line (); | |
1448 | } | |
1449 | ||
1450 | /* This handles the .vtable_inherit pseudo-op, which is used to indicate | |
1451 | to the linker the hierarchy in which a particular table resides. The | |
1452 | syntax is ".vtable_inherit CHILDNAME, PARENTNAME". */ | |
1453 | ||
904a31bf | 1454 | struct fix * |
dbe2df79 | 1455 | obj_elf_vtable_inherit (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1456 | { |
1457 | char *cname, *pname; | |
1458 | symbolS *csym, *psym; | |
1459 | char c, bad = 0; | |
1460 | ||
1461 | if (*input_line_pointer == '#') | |
1462 | ++input_line_pointer; | |
1463 | ||
d02603dc | 1464 | c = get_symbol_name (& cname); |
252b5132 RH |
1465 | csym = symbol_find (cname); |
1466 | ||
1467 | /* GCFIXME: should check that we don't have two .vtable_inherits for | |
1468 | the same child symbol. Also, we can currently only do this if the | |
1469 | child symbol is already exists and is placed in a fragment. */ | |
1470 | ||
49309057 | 1471 | if (csym == NULL || symbol_get_frag (csym) == NULL) |
252b5132 | 1472 | { |
bd3ba5d1 | 1473 | as_bad (_("expected `%s' to have already been set for .vtable_inherit"), |
252b5132 RH |
1474 | cname); |
1475 | bad = 1; | |
1476 | } | |
1477 | ||
1478 | *input_line_pointer = c; | |
1479 | ||
d02603dc | 1480 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
1481 | if (*input_line_pointer != ',') |
1482 | { | |
bd3ba5d1 | 1483 | as_bad (_("expected comma after name in .vtable_inherit")); |
252b5132 | 1484 | ignore_rest_of_line (); |
904a31bf | 1485 | return NULL; |
252b5132 RH |
1486 | } |
1487 | ||
1488 | ++input_line_pointer; | |
1489 | SKIP_WHITESPACE (); | |
1490 | ||
1491 | if (*input_line_pointer == '#') | |
1492 | ++input_line_pointer; | |
1493 | ||
1494 | if (input_line_pointer[0] == '0' | |
1495 | && (input_line_pointer[1] == '\0' | |
3882b010 | 1496 | || ISSPACE (input_line_pointer[1]))) |
252b5132 RH |
1497 | { |
1498 | psym = section_symbol (absolute_section); | |
1499 | ++input_line_pointer; | |
1500 | } | |
1501 | else | |
1502 | { | |
d02603dc | 1503 | c = get_symbol_name (& pname); |
252b5132 | 1504 | psym = symbol_find_or_make (pname); |
d02603dc | 1505 | restore_line_pointer (c); |
252b5132 RH |
1506 | } |
1507 | ||
1508 | demand_empty_rest_of_line (); | |
1509 | ||
1510 | if (bad) | |
904a31bf | 1511 | return NULL; |
252b5132 | 1512 | |
9c2799c2 | 1513 | gas_assert (symbol_get_value_expression (csym)->X_op == O_constant); |
904a31bf AM |
1514 | return fix_new (symbol_get_frag (csym), |
1515 | symbol_get_value_expression (csym)->X_add_number, | |
1516 | 0, psym, 0, 0, BFD_RELOC_VTABLE_INHERIT); | |
252b5132 | 1517 | } |
fa306131 | 1518 | |
252b5132 RH |
1519 | /* This handles the .vtable_entry pseudo-op, which is used to indicate |
1520 | to the linker that a vtable slot was used. The syntax is | |
1521 | ".vtable_entry tablename, offset". */ | |
1522 | ||
904a31bf | 1523 | struct fix * |
dbe2df79 | 1524 | obj_elf_vtable_entry (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1525 | { |
252b5132 RH |
1526 | symbolS *sym; |
1527 | offsetT offset; | |
252b5132 RH |
1528 | |
1529 | if (*input_line_pointer == '#') | |
1530 | ++input_line_pointer; | |
1531 | ||
6e8bd58f | 1532 | sym = get_sym_from_input_line_and_check (); |
252b5132 RH |
1533 | if (*input_line_pointer != ',') |
1534 | { | |
bd3ba5d1 | 1535 | as_bad (_("expected comma after name in .vtable_entry")); |
252b5132 | 1536 | ignore_rest_of_line (); |
904a31bf | 1537 | return NULL; |
252b5132 RH |
1538 | } |
1539 | ||
1540 | ++input_line_pointer; | |
1541 | if (*input_line_pointer == '#') | |
1542 | ++input_line_pointer; | |
1543 | ||
1544 | offset = get_absolute_expression (); | |
1545 | ||
252b5132 | 1546 | demand_empty_rest_of_line (); |
904a31bf AM |
1547 | |
1548 | return fix_new (frag_now, frag_now_fix (), 0, sym, offset, 0, | |
1549 | BFD_RELOC_VTABLE_ENTRY); | |
252b5132 RH |
1550 | } |
1551 | ||
0420f52b MR |
1552 | #define skip_whitespace(str) do { if (*(str) == ' ') ++(str); } while (0) |
1553 | ||
1554 | static inline int | |
1555 | skip_past_char (char ** str, char c) | |
1556 | { | |
1557 | if (**str == c) | |
1558 | { | |
1559 | (*str)++; | |
1560 | return 0; | |
1561 | } | |
1562 | else | |
1563 | return -1; | |
1564 | } | |
1565 | #define skip_past_comma(str) skip_past_char (str, ',') | |
1566 | ||
9440a904 RS |
1567 | /* A list of attributes that have been explicitly set by the assembly code. |
1568 | VENDOR is the vendor id, BASE is the tag shifted right by the number | |
1569 | of bits in MASK, and bit N of MASK is set if tag BASE+N has been set. */ | |
1570 | struct recorded_attribute_info { | |
1571 | struct recorded_attribute_info *next; | |
1572 | int vendor; | |
1573 | unsigned int base; | |
1574 | unsigned long mask; | |
1575 | }; | |
1576 | static struct recorded_attribute_info *recorded_attributes; | |
1577 | ||
1578 | /* Record that we have seen an explicit specification of attribute TAG | |
1579 | for vendor VENDOR. */ | |
1580 | ||
1581 | static void | |
1582 | record_attribute (int vendor, unsigned int tag) | |
1583 | { | |
1584 | unsigned int base; | |
1585 | unsigned long mask; | |
1586 | struct recorded_attribute_info *rai; | |
1587 | ||
1588 | base = tag / (8 * sizeof (rai->mask)); | |
1589 | mask = 1UL << (tag % (8 * sizeof (rai->mask))); | |
1590 | for (rai = recorded_attributes; rai; rai = rai->next) | |
1591 | if (rai->vendor == vendor && rai->base == base) | |
1592 | { | |
1593 | rai->mask |= mask; | |
1594 | return; | |
1595 | } | |
1596 | ||
1597 | rai = XNEW (struct recorded_attribute_info); | |
1598 | rai->next = recorded_attributes; | |
1599 | rai->vendor = vendor; | |
1600 | rai->base = base; | |
1601 | rai->mask = mask; | |
1602 | recorded_attributes = rai; | |
1603 | } | |
1604 | ||
1605 | /* Return true if we have seen an explicit specification of attribute TAG | |
1606 | for vendor VENDOR. */ | |
1607 | ||
1608 | bfd_boolean | |
1609 | obj_elf_seen_attribute (int vendor, unsigned int tag) | |
1610 | { | |
1611 | unsigned int base; | |
1612 | unsigned long mask; | |
1613 | struct recorded_attribute_info *rai; | |
1614 | ||
1615 | base = tag / (8 * sizeof (rai->mask)); | |
1616 | mask = 1UL << (tag % (8 * sizeof (rai->mask))); | |
1617 | for (rai = recorded_attributes; rai; rai = rai->next) | |
1618 | if (rai->vendor == vendor && rai->base == base) | |
1619 | return (rai->mask & mask) != 0; | |
1620 | return FALSE; | |
1621 | } | |
1622 | ||
0420f52b MR |
1623 | /* Parse an attribute directive for VENDOR. |
1624 | Returns the attribute number read, or zero on error. */ | |
1625 | ||
1626 | int | |
1627 | obj_elf_vendor_attribute (int vendor) | |
1628 | { | |
1629 | expressionS exp; | |
1630 | int type; | |
1631 | int tag; | |
1632 | unsigned int i = 0; | |
1633 | char *s = NULL; | |
1634 | ||
1635 | /* Read the first number or name. */ | |
1636 | skip_whitespace (input_line_pointer); | |
1637 | s = input_line_pointer; | |
1638 | if (ISDIGIT (*input_line_pointer)) | |
1639 | { | |
1640 | expression (& exp); | |
1641 | if (exp.X_op != O_constant) | |
1642 | goto bad; | |
1643 | tag = exp.X_add_number; | |
1644 | } | |
1645 | else | |
1646 | { | |
1647 | char *name; | |
1648 | ||
1649 | /* A name may contain '_', but no other punctuation. */ | |
1650 | for (; ISALNUM (*input_line_pointer) || *input_line_pointer == '_'; | |
1651 | ++input_line_pointer) | |
1652 | i++; | |
1653 | if (i == 0) | |
1654 | goto bad; | |
1655 | ||
a44e2901 | 1656 | name = xstrndup (s, i); |
0420f52b MR |
1657 | |
1658 | #ifndef CONVERT_SYMBOLIC_ATTRIBUTE | |
1659 | #define CONVERT_SYMBOLIC_ATTRIBUTE(a) -1 | |
1660 | #endif | |
1661 | ||
1662 | tag = CONVERT_SYMBOLIC_ATTRIBUTE (name); | |
1663 | if (tag == -1) | |
1664 | { | |
1665 | as_bad (_("Attribute name not recognised: %s"), name); | |
1666 | ignore_rest_of_line (); | |
e1fa0163 | 1667 | free (name); |
0420f52b MR |
1668 | return 0; |
1669 | } | |
e1fa0163 | 1670 | free (name); |
0420f52b MR |
1671 | } |
1672 | ||
1673 | type = _bfd_elf_obj_attrs_arg_type (stdoutput, vendor, tag); | |
1674 | ||
1675 | if (skip_past_comma (&input_line_pointer) == -1) | |
1676 | goto bad; | |
1677 | if (type & 1) | |
1678 | { | |
1679 | expression (& exp); | |
1680 | if (exp.X_op != O_constant) | |
1681 | { | |
1682 | as_bad (_("expected numeric constant")); | |
1683 | ignore_rest_of_line (); | |
1684 | return 0; | |
1685 | } | |
1686 | i = exp.X_add_number; | |
1687 | } | |
1688 | if ((type & 3) == 3 | |
1689 | && skip_past_comma (&input_line_pointer) == -1) | |
1690 | { | |
1691 | as_bad (_("expected comma")); | |
1692 | ignore_rest_of_line (); | |
1693 | return 0; | |
1694 | } | |
1695 | if (type & 2) | |
1696 | { | |
1697 | int len; | |
1698 | ||
1699 | skip_whitespace (input_line_pointer); | |
1700 | if (*input_line_pointer != '"') | |
1701 | goto bad_string; | |
1702 | s = demand_copy_C_string (&len); | |
1703 | } | |
1704 | ||
9440a904 | 1705 | record_attribute (vendor, tag); |
0420f52b MR |
1706 | switch (type & 3) |
1707 | { | |
1708 | case 3: | |
1709 | bfd_elf_add_obj_attr_int_string (stdoutput, vendor, tag, i, s); | |
1710 | break; | |
1711 | case 2: | |
1712 | bfd_elf_add_obj_attr_string (stdoutput, vendor, tag, s); | |
1713 | break; | |
1714 | case 1: | |
1715 | bfd_elf_add_obj_attr_int (stdoutput, vendor, tag, i); | |
1716 | break; | |
1717 | default: | |
1718 | abort (); | |
1719 | } | |
1720 | ||
1721 | demand_empty_rest_of_line (); | |
1722 | return tag; | |
1723 | bad_string: | |
1724 | as_bad (_("bad string constant")); | |
1725 | ignore_rest_of_line (); | |
1726 | return 0; | |
1727 | bad: | |
1728 | as_bad (_("expected <tag> , <value>")); | |
1729 | ignore_rest_of_line (); | |
1730 | return 0; | |
1731 | } | |
1732 | ||
1733 | /* Parse a .gnu_attribute directive. */ | |
1734 | ||
1735 | static void | |
1736 | obj_elf_gnu_attribute (int ignored ATTRIBUTE_UNUSED) | |
1737 | { | |
1738 | obj_elf_vendor_attribute (OBJ_ATTR_GNU); | |
1739 | } | |
1740 | ||
252b5132 | 1741 | void |
dbe2df79 | 1742 | elf_obj_read_begin_hook (void) |
252b5132 RH |
1743 | { |
1744 | #ifdef NEED_ECOFF_DEBUG | |
1745 | if (ECOFF_DEBUGGING) | |
1746 | ecoff_read_begin_hook (); | |
1747 | #endif | |
1748 | } | |
1749 | ||
1750 | void | |
dbe2df79 | 1751 | elf_obj_symbol_new_hook (symbolS *symbolP) |
252b5132 | 1752 | { |
49309057 ILT |
1753 | struct elf_obj_sy *sy_obj; |
1754 | ||
1755 | sy_obj = symbol_get_obj (symbolP); | |
1756 | sy_obj->size = NULL; | |
1757 | sy_obj->versioned_name = NULL; | |
252b5132 RH |
1758 | |
1759 | #ifdef NEED_ECOFF_DEBUG | |
1760 | if (ECOFF_DEBUGGING) | |
1761 | ecoff_symbol_new_hook (symbolP); | |
1762 | #endif | |
1763 | } | |
1764 | ||
8fd3e36b AM |
1765 | /* When setting one symbol equal to another, by default we probably |
1766 | want them to have the same "size", whatever it means in the current | |
1767 | context. */ | |
1768 | ||
1769 | void | |
dbe2df79 | 1770 | elf_copy_symbol_attributes (symbolS *dest, symbolS *src) |
8fd3e36b | 1771 | { |
060adf0e AM |
1772 | struct elf_obj_sy *srcelf = symbol_get_obj (src); |
1773 | struct elf_obj_sy *destelf = symbol_get_obj (dest); | |
1774 | if (srcelf->size) | |
1775 | { | |
1776 | if (destelf->size == NULL) | |
325801bd | 1777 | destelf->size = XNEW (expressionS); |
060adf0e AM |
1778 | *destelf->size = *srcelf->size; |
1779 | } | |
1780 | else | |
1781 | { | |
1782 | if (destelf->size != NULL) | |
1783 | free (destelf->size); | |
1784 | destelf->size = NULL; | |
1785 | } | |
1786 | S_SET_SIZE (dest, S_GET_SIZE (src)); | |
26eb4093 JJ |
1787 | /* Don't copy visibility. */ |
1788 | S_SET_OTHER (dest, (ELF_ST_VISIBILITY (S_GET_OTHER (dest)) | |
1789 | | (S_GET_OTHER (src) & ~ELF_ST_VISIBILITY (-1)))); | |
8fd3e36b AM |
1790 | } |
1791 | ||
252b5132 | 1792 | void |
dbe2df79 | 1793 | obj_elf_version (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1794 | { |
1795 | char *name; | |
1796 | unsigned int c; | |
252b5132 RH |
1797 | char *p; |
1798 | asection *seg = now_seg; | |
1799 | subsegT subseg = now_subseg; | |
1800 | Elf_Internal_Note i_note; | |
1801 | Elf_External_Note e_note; | |
dbe2df79 | 1802 | asection *note_secp = NULL; |
252b5132 RH |
1803 | |
1804 | SKIP_WHITESPACE (); | |
1805 | if (*input_line_pointer == '\"') | |
1806 | { | |
6afdfa61 NC |
1807 | unsigned int len; |
1808 | ||
bf514e21 | 1809 | ++input_line_pointer; /* -> 1st char of string. */ |
252b5132 RH |
1810 | name = input_line_pointer; |
1811 | ||
1812 | while (is_a_char (c = next_char_of_string ())) | |
1813 | ; | |
1814 | c = *input_line_pointer; | |
1815 | *input_line_pointer = '\0'; | |
1816 | *(input_line_pointer - 1) = '\0'; | |
1817 | *input_line_pointer = c; | |
1818 | ||
6afdfa61 | 1819 | /* Create the .note section. */ |
252b5132 RH |
1820 | note_secp = subseg_new (".note", 0); |
1821 | bfd_set_section_flags (stdoutput, | |
1822 | note_secp, | |
1823 | SEC_HAS_CONTENTS | SEC_READONLY); | |
1824 | ||
6afdfa61 NC |
1825 | /* Process the version string. */ |
1826 | len = strlen (name) + 1; | |
252b5132 | 1827 | |
6afdfa61 NC |
1828 | /* PR 3456: Although the name field is padded out to an 4-byte |
1829 | boundary, the namesz field should not be adjusted. */ | |
1830 | i_note.namesz = len; | |
1831 | i_note.descsz = 0; /* No description. */ | |
252b5132 RH |
1832 | i_note.type = NT_VERSION; |
1833 | p = frag_more (sizeof (e_note.namesz)); | |
dbe2df79 | 1834 | md_number_to_chars (p, i_note.namesz, sizeof (e_note.namesz)); |
252b5132 | 1835 | p = frag_more (sizeof (e_note.descsz)); |
dbe2df79 | 1836 | md_number_to_chars (p, i_note.descsz, sizeof (e_note.descsz)); |
252b5132 | 1837 | p = frag_more (sizeof (e_note.type)); |
dbe2df79 | 1838 | md_number_to_chars (p, i_note.type, sizeof (e_note.type)); |
6afdfa61 | 1839 | p = frag_more (len); |
5ab504f9 | 1840 | memcpy (p, name, len); |
252b5132 | 1841 | |
252b5132 RH |
1842 | frag_align (2, 0, 0); |
1843 | ||
1844 | subseg_set (seg, subseg); | |
1845 | } | |
1846 | else | |
6afdfa61 NC |
1847 | as_bad (_("expected quoted string")); |
1848 | ||
252b5132 RH |
1849 | demand_empty_rest_of_line (); |
1850 | } | |
1851 | ||
1852 | static void | |
dbe2df79 | 1853 | obj_elf_size (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1854 | { |
d02603dc NC |
1855 | char *name; |
1856 | char c = get_symbol_name (&name); | |
252b5132 RH |
1857 | char *p; |
1858 | expressionS exp; | |
1859 | symbolS *sym; | |
1860 | ||
1861 | p = input_line_pointer; | |
1862 | *p = c; | |
d02603dc | 1863 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
1864 | if (*input_line_pointer != ',') |
1865 | { | |
1866 | *p = 0; | |
1867 | as_bad (_("expected comma after name `%s' in .size directive"), name); | |
1868 | *p = c; | |
1869 | ignore_rest_of_line (); | |
1870 | return; | |
1871 | } | |
1872 | input_line_pointer++; | |
1873 | expression (&exp); | |
1874 | if (exp.X_op == O_absent) | |
1875 | { | |
1876 | as_bad (_("missing expression in .size directive")); | |
1877 | exp.X_op = O_constant; | |
1878 | exp.X_add_number = 0; | |
1879 | } | |
1880 | *p = 0; | |
1881 | sym = symbol_find_or_make (name); | |
1882 | *p = c; | |
1883 | if (exp.X_op == O_constant) | |
c538998c JJ |
1884 | { |
1885 | S_SET_SIZE (sym, exp.X_add_number); | |
1886 | if (symbol_get_obj (sym)->size) | |
1887 | { | |
1888 | xfree (symbol_get_obj (sym)->size); | |
1889 | symbol_get_obj (sym)->size = NULL; | |
1890 | } | |
1891 | } | |
252b5132 RH |
1892 | else |
1893 | { | |
325801bd | 1894 | symbol_get_obj (sym)->size = XNEW (expressionS); |
49309057 | 1895 | *symbol_get_obj (sym)->size = exp; |
252b5132 RH |
1896 | } |
1897 | demand_empty_rest_of_line (); | |
1898 | } | |
1899 | ||
1900 | /* Handle the ELF .type pseudo-op. This sets the type of a symbol. | |
44bf2362 | 1901 | There are six syntaxes: |
fa306131 | 1902 | |
252b5132 RH |
1903 | The first (used on Solaris) is |
1904 | .type SYM,#function | |
1905 | The second (used on UnixWare) is | |
1906 | .type SYM,@function | |
1907 | The third (reportedly to be used on Irix 6.0) is | |
1908 | .type SYM STT_FUNC | |
1909 | The fourth (used on NetBSD/Arm and Linux/ARM) is | |
1910 | .type SYM,%function | |
aa8c34c3 JE |
1911 | The fifth (used on SVR4/860) is |
1912 | .type SYM,"function" | |
44bf2362 NC |
1913 | The sixth (emitted by recent SunPRO under Solaris) is |
1914 | .type SYM,[0-9] | |
1915 | where the integer is the STT_* value. | |
252b5132 RH |
1916 | */ |
1917 | ||
44bf2362 NC |
1918 | static char * |
1919 | obj_elf_type_name (char *cp) | |
1920 | { | |
1921 | char *p; | |
1922 | ||
1923 | p = input_line_pointer; | |
1924 | if (*input_line_pointer >= '0' | |
1925 | && *input_line_pointer <= '9') | |
1926 | { | |
1927 | while (*input_line_pointer >= '0' | |
1928 | && *input_line_pointer <= '9') | |
1929 | ++input_line_pointer; | |
1930 | *cp = *input_line_pointer; | |
1931 | *input_line_pointer = '\0'; | |
1932 | } | |
1933 | else | |
d02603dc | 1934 | *cp = get_symbol_name (&p); |
44bf2362 NC |
1935 | |
1936 | return p; | |
1937 | } | |
1938 | ||
252b5132 | 1939 | static void |
dbe2df79 | 1940 | obj_elf_type (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1941 | { |
252b5132 RH |
1942 | char c; |
1943 | int type; | |
1e9cc1c2 | 1944 | const char *type_name; |
252b5132 | 1945 | symbolS *sym; |
904a31bf | 1946 | elf_symbol_type *elfsym; |
252b5132 | 1947 | |
6e8bd58f NS |
1948 | sym = get_sym_from_input_line_and_check (); |
1949 | c = *input_line_pointer; | |
904a31bf | 1950 | elfsym = (elf_symbol_type *) symbol_get_bfdsym (sym); |
252b5132 | 1951 | |
252b5132 RH |
1952 | if (*input_line_pointer == ',') |
1953 | ++input_line_pointer; | |
1954 | ||
1955 | SKIP_WHITESPACE (); | |
1956 | if ( *input_line_pointer == '#' | |
1957 | || *input_line_pointer == '@' | |
aa8c34c3 | 1958 | || *input_line_pointer == '"' |
252b5132 RH |
1959 | || *input_line_pointer == '%') |
1960 | ++input_line_pointer; | |
1961 | ||
1e9cc1c2 | 1962 | type_name = obj_elf_type_name (& c); |
252b5132 RH |
1963 | |
1964 | type = 0; | |
1e9cc1c2 NC |
1965 | if (strcmp (type_name, "function") == 0 |
1966 | || strcmp (type_name, "2") == 0 | |
1967 | || strcmp (type_name, "STT_FUNC") == 0) | |
252b5132 | 1968 | type = BSF_FUNCTION; |
1e9cc1c2 NC |
1969 | else if (strcmp (type_name, "object") == 0 |
1970 | || strcmp (type_name, "1") == 0 | |
1971 | || strcmp (type_name, "STT_OBJECT") == 0) | |
252b5132 | 1972 | type = BSF_OBJECT; |
1e9cc1c2 NC |
1973 | else if (strcmp (type_name, "tls_object") == 0 |
1974 | || strcmp (type_name, "6") == 0 | |
1975 | || strcmp (type_name, "STT_TLS") == 0) | |
b9734f35 | 1976 | type = BSF_OBJECT | BSF_THREAD_LOCAL; |
1e9cc1c2 NC |
1977 | else if (strcmp (type_name, "notype") == 0 |
1978 | || strcmp (type_name, "0") == 0 | |
1979 | || strcmp (type_name, "STT_NOTYPE") == 0) | |
e7b9a8c1 | 1980 | ; |
1e9cc1c2 NC |
1981 | else if (strcmp (type_name, "common") == 0 |
1982 | || strcmp (type_name, "5") == 0 | |
1983 | || strcmp (type_name, "STT_COMMON") == 0) | |
504b7d20 NC |
1984 | { |
1985 | type = BSF_OBJECT; | |
1986 | ||
1987 | if (! S_IS_COMMON (sym)) | |
1988 | { | |
1989 | if (S_IS_VOLATILE (sym)) | |
1990 | { | |
1991 | sym = symbol_clone (sym, 1); | |
1992 | S_SET_SEGMENT (sym, bfd_com_section_ptr); | |
1993 | S_SET_VALUE (sym, 0); | |
1994 | S_SET_EXTERNAL (sym); | |
1995 | symbol_set_frag (sym, &zero_address_frag); | |
1996 | S_CLEAR_VOLATILE (sym); | |
1997 | } | |
1998 | else if (S_IS_DEFINED (sym) || symbol_equated_p (sym)) | |
1999 | as_bad (_("symbol '%s' is already defined"), S_GET_NAME (sym)); | |
2000 | else | |
2001 | { | |
2002 | /* FIXME: Is it safe to just change the section ? */ | |
2003 | S_SET_SEGMENT (sym, bfd_com_section_ptr); | |
2004 | S_SET_VALUE (sym, 0); | |
2005 | S_SET_EXTERNAL (sym); | |
2006 | } | |
2007 | } | |
2008 | } | |
1e9cc1c2 NC |
2009 | else if (strcmp (type_name, "gnu_indirect_function") == 0 |
2010 | || strcmp (type_name, "10") == 0 | |
2011 | || strcmp (type_name, "STT_GNU_IFUNC") == 0) | |
d8045f23 NC |
2012 | { |
2013 | const struct elf_backend_data *bed; | |
2014 | ||
2015 | bed = get_elf_backend_data (stdoutput); | |
9c55345c | 2016 | if (!(bed->elf_osabi == ELFOSABI_GNU |
83c257ca | 2017 | || bed->elf_osabi == ELFOSABI_FREEBSD |
9c55345c | 2018 | /* GNU is still using the default value 0. */ |
d8045f23 | 2019 | || bed->elf_osabi == ELFOSABI_NONE)) |
83c257ca | 2020 | as_bad (_("symbol type \"%s\" is supported only by GNU and FreeBSD targets"), |
1e9cc1c2 | 2021 | type_name); |
d8045f23 NC |
2022 | type = BSF_FUNCTION | BSF_GNU_INDIRECT_FUNCTION; |
2023 | } | |
1e9cc1c2 | 2024 | else if (strcmp (type_name, "gnu_unique_object") == 0) |
3e7a7d11 | 2025 | { |
d3ce72d0 | 2026 | struct elf_backend_data *bed; |
3e7a7d11 | 2027 | |
d3ce72d0 | 2028 | bed = (struct elf_backend_data *) get_elf_backend_data (stdoutput); |
9c55345c TS |
2029 | if (!(bed->elf_osabi == ELFOSABI_GNU |
2030 | /* GNU is still using the default value 0. */ | |
3e7a7d11 NC |
2031 | || bed->elf_osabi == ELFOSABI_NONE)) |
2032 | as_bad (_("symbol type \"%s\" is supported only by GNU targets"), | |
1e9cc1c2 | 2033 | type_name); |
3e7a7d11 | 2034 | type = BSF_OBJECT | BSF_GNU_UNIQUE; |
9c55345c TS |
2035 | /* PR 10549: Always set OSABI field to GNU for objects containing unique symbols. */ |
2036 | bed->elf_osabi = ELFOSABI_GNU; | |
3e7a7d11 | 2037 | } |
904a31bf | 2038 | #ifdef md_elf_symbol_type |
1e9cc1c2 | 2039 | else if ((type = md_elf_symbol_type (type_name, sym, elfsym)) != -1) |
904a31bf AM |
2040 | ; |
2041 | #endif | |
252b5132 | 2042 | else |
1e9cc1c2 | 2043 | as_bad (_("unrecognized symbol type \"%s\""), type_name); |
252b5132 RH |
2044 | |
2045 | *input_line_pointer = c; | |
2046 | ||
aa8c34c3 JE |
2047 | if (*input_line_pointer == '"') |
2048 | ++input_line_pointer; | |
2049 | ||
904a31bf | 2050 | elfsym->symbol.flags |= type; |
252b5132 RH |
2051 | |
2052 | demand_empty_rest_of_line (); | |
2053 | } | |
2054 | ||
2055 | static void | |
dbe2df79 | 2056 | obj_elf_ident (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2057 | { |
2058 | static segT comment_section; | |
2059 | segT old_section = now_seg; | |
2060 | int old_subsection = now_subseg; | |
2061 | ||
5f91fe03 ILT |
2062 | #ifdef md_flush_pending_output |
2063 | md_flush_pending_output (); | |
2064 | #endif | |
2065 | ||
252b5132 RH |
2066 | if (!comment_section) |
2067 | { | |
2068 | char *p; | |
2069 | comment_section = subseg_new (".comment", 0); | |
2070 | bfd_set_section_flags (stdoutput, comment_section, | |
01fb1836 RM |
2071 | SEC_READONLY | SEC_HAS_CONTENTS |
2072 | | SEC_MERGE | SEC_STRINGS); | |
2073 | comment_section->entsize = 1; | |
cd000bff DJ |
2074 | #ifdef md_elf_section_change_hook |
2075 | md_elf_section_change_hook (); | |
2076 | #endif | |
252b5132 RH |
2077 | p = frag_more (1); |
2078 | *p = 0; | |
2079 | } | |
2080 | else | |
2081 | subseg_set (comment_section, 0); | |
38a57ae7 | 2082 | stringer (8 + 1); |
252b5132 RH |
2083 | subseg_set (old_section, old_subsection); |
2084 | } | |
2085 | ||
2086 | #ifdef INIT_STAB_SECTION | |
2087 | ||
2088 | /* The first entry in a .stabs section is special. */ | |
2089 | ||
2090 | void | |
dbe2df79 | 2091 | obj_elf_init_stab_section (segT seg) |
252b5132 | 2092 | { |
3b4dbbbf | 2093 | const char *file; |
252b5132 RH |
2094 | char *p; |
2095 | char *stabstr_name; | |
2096 | unsigned int stroff; | |
2097 | ||
2098 | /* Force the section to align to a longword boundary. Without this, | |
2099 | UnixWare ar crashes. */ | |
2100 | bfd_set_section_alignment (stdoutput, seg, 2); | |
2101 | ||
bf514e21 | 2102 | /* Make space for this first symbol. */ |
252b5132 | 2103 | p = frag_more (12); |
bf514e21 | 2104 | /* Zero it out. */ |
252b5132 | 2105 | memset (p, 0, 12); |
3b4dbbbf | 2106 | file = as_where (NULL); |
29a2809e | 2107 | stabstr_name = concat (segment_name (seg), "str", (char *) NULL); |
252b5132 | 2108 | stroff = get_stab_string_offset (file, stabstr_name); |
91952a06 | 2109 | know (stroff == 1 || (stroff == 0 && file[0] == '\0')); |
252b5132 RH |
2110 | md_number_to_chars (p, stroff, 4); |
2111 | seg_info (seg)->stabu.p = p; | |
2112 | } | |
2113 | ||
2114 | #endif | |
2115 | ||
2116 | /* Fill in the counts in the first entry in a .stabs section. */ | |
2117 | ||
2118 | static void | |
dbe2df79 | 2119 | adjust_stab_sections (bfd *abfd, asection *sec, void *xxx ATTRIBUTE_UNUSED) |
252b5132 RH |
2120 | { |
2121 | char *name; | |
2122 | asection *strsec; | |
2123 | char *p; | |
2124 | int strsz, nsyms; | |
2125 | ||
2126 | if (strncmp (".stab", sec->name, 5)) | |
2127 | return; | |
2128 | if (!strcmp ("str", sec->name + strlen (sec->name) - 3)) | |
2129 | return; | |
2130 | ||
e1fa0163 | 2131 | name = concat (sec->name, "str", NULL); |
252b5132 RH |
2132 | strsec = bfd_get_section_by_name (abfd, name); |
2133 | if (strsec) | |
2134 | strsz = bfd_section_size (abfd, strsec); | |
2135 | else | |
2136 | strsz = 0; | |
2137 | nsyms = bfd_section_size (abfd, sec) / 12 - 1; | |
2138 | ||
2139 | p = seg_info (sec)->stabu.p; | |
9c2799c2 | 2140 | gas_assert (p != 0); |
252b5132 | 2141 | |
dbe2df79 AM |
2142 | bfd_h_put_16 (abfd, nsyms, p + 6); |
2143 | bfd_h_put_32 (abfd, strsz, p + 8); | |
e1fa0163 | 2144 | free (name); |
252b5132 RH |
2145 | } |
2146 | ||
2147 | #ifdef NEED_ECOFF_DEBUG | |
2148 | ||
2149 | /* This function is called by the ECOFF code. It is supposed to | |
2150 | record the external symbol information so that the backend can | |
2151 | write it out correctly. The ELF backend doesn't actually handle | |
2152 | this at the moment, so we do it ourselves. We save the information | |
2153 | in the symbol. */ | |
2154 | ||
ae4a729b AM |
2155 | #ifdef OBJ_MAYBE_ELF |
2156 | static | |
2157 | #endif | |
252b5132 | 2158 | void |
dbe2df79 | 2159 | elf_ecoff_set_ext (symbolS *sym, struct ecoff_extr *ext) |
252b5132 | 2160 | { |
dbe2df79 | 2161 | symbol_get_bfdsym (sym)->udata.p = ext; |
252b5132 RH |
2162 | } |
2163 | ||
2164 | /* This function is called by bfd_ecoff_debug_externals. It is | |
2165 | supposed to *EXT to the external symbol information, and return | |
2166 | whether the symbol should be used at all. */ | |
2167 | ||
b34976b6 | 2168 | static bfd_boolean |
dbe2df79 | 2169 | elf_get_extr (asymbol *sym, EXTR *ext) |
252b5132 RH |
2170 | { |
2171 | if (sym->udata.p == NULL) | |
b34976b6 | 2172 | return FALSE; |
252b5132 | 2173 | *ext = *(EXTR *) sym->udata.p; |
b34976b6 | 2174 | return TRUE; |
252b5132 RH |
2175 | } |
2176 | ||
2177 | /* This function is called by bfd_ecoff_debug_externals. It has | |
2178 | nothing to do for ELF. */ | |
2179 | ||
252b5132 | 2180 | static void |
dbe2df79 AM |
2181 | elf_set_index (asymbol *sym ATTRIBUTE_UNUSED, |
2182 | bfd_size_type indx ATTRIBUTE_UNUSED) | |
252b5132 RH |
2183 | { |
2184 | } | |
2185 | ||
2186 | #endif /* NEED_ECOFF_DEBUG */ | |
2187 | ||
2188 | void | |
dbe2df79 | 2189 | elf_frob_symbol (symbolS *symp, int *puntp) |
252b5132 | 2190 | { |
49309057 | 2191 | struct elf_obj_sy *sy_obj; |
49002d7f | 2192 | expressionS *size; |
49309057 | 2193 | |
252b5132 RH |
2194 | #ifdef NEED_ECOFF_DEBUG |
2195 | if (ECOFF_DEBUGGING) | |
2196 | ecoff_frob_symbol (symp); | |
2197 | #endif | |
2198 | ||
49309057 ILT |
2199 | sy_obj = symbol_get_obj (symp); |
2200 | ||
49002d7f L |
2201 | size = sy_obj->size; |
2202 | if (size != NULL) | |
252b5132 | 2203 | { |
49002d7f L |
2204 | if (resolve_expression (size) |
2205 | && size->X_op == O_constant) | |
2206 | S_SET_SIZE (symp, size->X_add_number); | |
e1e90034 | 2207 | else |
49002d7f | 2208 | { |
a90fb5e3 | 2209 | if (!flag_allow_nonconst_size) |
869fe6ea AM |
2210 | as_bad (_(".size expression for %s " |
2211 | "does not evaluate to a constant"), S_GET_NAME (symp)); | |
21be61f5 | 2212 | else |
869fe6ea AM |
2213 | as_warn (_(".size expression for %s " |
2214 | "does not evaluate to a constant"), S_GET_NAME (symp)); | |
49002d7f | 2215 | } |
49309057 ILT |
2216 | free (sy_obj->size); |
2217 | sy_obj->size = NULL; | |
252b5132 RH |
2218 | } |
2219 | ||
49309057 | 2220 | if (sy_obj->versioned_name != NULL) |
252b5132 | 2221 | { |
79082ff0 L |
2222 | char *p; |
2223 | ||
2224 | p = strchr (sy_obj->versioned_name, ELF_VER_CHR); | |
85024cd8 AM |
2225 | if (p == NULL) |
2226 | /* We will have already reported an error about a missing version. */ | |
2227 | *puntp = TRUE; | |
79082ff0 | 2228 | |
252b5132 RH |
2229 | /* This symbol was given a new name with the .symver directive. |
2230 | ||
13c56984 AM |
2231 | If this is an external reference, just rename the symbol to |
2232 | include the version string. This will make the relocs be | |
2233 | against the correct versioned symbol. | |
252b5132 RH |
2234 | |
2235 | If this is a definition, add an alias. FIXME: Using an alias | |
2236 | will permit the debugging information to refer to the right | |
2237 | symbol. However, it's not clear whether it is the best | |
2238 | approach. */ | |
2239 | ||
85024cd8 | 2240 | else if (! S_IS_DEFINED (symp)) |
252b5132 | 2241 | { |
252b5132 | 2242 | /* Verify that the name isn't using the @@ syntax--this is |
13c56984 AM |
2243 | reserved for definitions of the default version to link |
2244 | against. */ | |
252b5132 RH |
2245 | if (p[1] == ELF_VER_CHR) |
2246 | { | |
85024cd8 AM |
2247 | as_bad (_("invalid attempt to declare external version name" |
2248 | " as default in symbol `%s'"), | |
49309057 | 2249 | sy_obj->versioned_name); |
b34976b6 | 2250 | *puntp = TRUE; |
252b5132 | 2251 | } |
49309057 | 2252 | S_SET_NAME (symp, sy_obj->versioned_name); |
252b5132 RH |
2253 | } |
2254 | else | |
2255 | { | |
dbe2df79 | 2256 | if (p[1] == ELF_VER_CHR && p[2] == ELF_VER_CHR) |
79082ff0 L |
2257 | { |
2258 | size_t l; | |
2259 | ||
2260 | /* The @@@ syntax is a special case. It renames the | |
2261 | symbol name to versioned_name with one `@' removed. */ | |
2262 | l = strlen (&p[3]) + 1; | |
dbe2df79 | 2263 | memmove (&p[2], &p[3], l); |
79082ff0 L |
2264 | S_SET_NAME (symp, sy_obj->versioned_name); |
2265 | } | |
2266 | else | |
2267 | { | |
2268 | symbolS *symp2; | |
252b5132 | 2269 | |
79082ff0 L |
2270 | /* FIXME: Creating a new symbol here is risky. We're |
2271 | in the final loop over the symbol table. We can | |
2272 | get away with it only because the symbol goes to | |
2273 | the end of the list, where the loop will still see | |
2274 | it. It would probably be better to do this in | |
2275 | obj_frob_file_before_adjust. */ | |
252b5132 | 2276 | |
79082ff0 | 2277 | symp2 = symbol_find_or_make (sy_obj->versioned_name); |
252b5132 | 2278 | |
79082ff0 | 2279 | /* Now we act as though we saw symp2 = sym. */ |
252b5132 | 2280 | |
79082ff0 | 2281 | S_SET_SEGMENT (symp2, S_GET_SEGMENT (symp)); |
252b5132 | 2282 | |
79082ff0 L |
2283 | /* Subtracting out the frag address here is a hack |
2284 | because we are in the middle of the final loop. */ | |
2285 | S_SET_VALUE (symp2, | |
2286 | (S_GET_VALUE (symp) | |
2287 | - symbol_get_frag (symp)->fr_address)); | |
252b5132 | 2288 | |
79082ff0 | 2289 | symbol_set_frag (symp2, symbol_get_frag (symp)); |
252b5132 | 2290 | |
79082ff0 L |
2291 | /* This will copy over the size information. */ |
2292 | copy_symbol_attributes (symp2, symp); | |
252b5132 | 2293 | |
26eb4093 JJ |
2294 | S_SET_OTHER (symp2, S_GET_OTHER (symp)); |
2295 | ||
79082ff0 L |
2296 | if (S_IS_WEAK (symp)) |
2297 | S_SET_WEAK (symp2); | |
252b5132 | 2298 | |
79082ff0 L |
2299 | if (S_IS_EXTERNAL (symp)) |
2300 | S_SET_EXTERNAL (symp2); | |
2301 | } | |
252b5132 RH |
2302 | } |
2303 | } | |
2304 | ||
2305 | /* Double check weak symbols. */ | |
49309057 | 2306 | if (S_IS_WEAK (symp)) |
252b5132 RH |
2307 | { |
2308 | if (S_IS_COMMON (symp)) | |
6ce8b369 | 2309 | as_bad (_("symbol `%s' can not be both weak and common"), |
252b5132 RH |
2310 | S_GET_NAME (symp)); |
2311 | } | |
2312 | ||
2313 | #ifdef TC_MIPS | |
2314 | /* The Irix 5 and 6 assemblers set the type of any common symbol and | |
2315 | any undefined non-function symbol to STT_OBJECT. We try to be | |
2316 | compatible, since newer Irix 5 and 6 linkers care. However, we | |
2317 | only set undefined symbols to be STT_OBJECT if we are on Irix, | |
2318 | because that is the only time gcc will generate the necessary | |
2319 | .global directives to mark functions. */ | |
2320 | ||
2321 | if (S_IS_COMMON (symp)) | |
49309057 | 2322 | symbol_get_bfdsym (symp)->flags |= BSF_OBJECT; |
252b5132 RH |
2323 | |
2324 | if (strstr (TARGET_OS, "irix") != NULL | |
49309057 ILT |
2325 | && ! S_IS_DEFINED (symp) |
2326 | && (symbol_get_bfdsym (symp)->flags & BSF_FUNCTION) == 0) | |
2327 | symbol_get_bfdsym (symp)->flags |= BSF_OBJECT; | |
252b5132 | 2328 | #endif |
252b5132 RH |
2329 | } |
2330 | ||
060adf0e AM |
2331 | struct group_list |
2332 | { | |
2333 | asection **head; /* Section lists. */ | |
2334 | unsigned int *elt_count; /* Number of sections in each list. */ | |
2335 | unsigned int num_group; /* Number of lists. */ | |
1e9cc1c2 | 2336 | struct hash_control *indexes; /* Maps group name to index in head array. */ |
060adf0e AM |
2337 | }; |
2338 | ||
2339 | /* Called via bfd_map_over_sections. If SEC is a member of a group, | |
2340 | add it to a list of sections belonging to the group. INF is a | |
2341 | pointer to a struct group_list, which is where we store the head of | |
2342 | each list. */ | |
2343 | ||
2344 | static void | |
dbe2df79 | 2345 | build_group_lists (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *inf) |
060adf0e | 2346 | { |
1e9cc1c2 | 2347 | struct group_list *list = (struct group_list *) inf; |
aa1f4858 | 2348 | const char *group_name = elf_group_name (sec); |
060adf0e | 2349 | unsigned int i; |
1e9cc1c2 NC |
2350 | unsigned int *elem_idx; |
2351 | unsigned int *idx_ptr; | |
060adf0e AM |
2352 | |
2353 | if (group_name == NULL) | |
2354 | return; | |
2355 | ||
2356 | /* If this group already has a list, add the section to the head of | |
2357 | the list. */ | |
1e9cc1c2 NC |
2358 | elem_idx = (unsigned int *) hash_find (list->indexes, group_name); |
2359 | if (elem_idx != NULL) | |
060adf0e | 2360 | { |
1e9cc1c2 NC |
2361 | elf_next_in_group (sec) = list->head[*elem_idx]; |
2362 | list->head[*elem_idx] = sec; | |
2363 | list->elt_count[*elem_idx] += 1; | |
2364 | return; | |
060adf0e AM |
2365 | } |
2366 | ||
2367 | /* New group. Make the arrays bigger in chunks to minimize calls to | |
2368 | realloc. */ | |
2369 | i = list->num_group; | |
2370 | if ((i & 127) == 0) | |
2371 | { | |
2372 | unsigned int newsize = i + 128; | |
add39d23 TS |
2373 | list->head = XRESIZEVEC (asection *, list->head, newsize); |
2374 | list->elt_count = XRESIZEVEC (unsigned int, list->elt_count, newsize); | |
060adf0e AM |
2375 | } |
2376 | list->head[i] = sec; | |
2377 | list->elt_count[i] = 1; | |
2378 | list->num_group += 1; | |
1e9cc1c2 NC |
2379 | |
2380 | /* Add index to hash. */ | |
325801bd | 2381 | idx_ptr = XNEW (unsigned int); |
1e9cc1c2 NC |
2382 | *idx_ptr = i; |
2383 | hash_insert (list->indexes, group_name, idx_ptr); | |
2384 | } | |
2385 | ||
2386 | static void free_section_idx (const char *key ATTRIBUTE_UNUSED, void *val) | |
2387 | { | |
2388 | free ((unsigned int *) val); | |
060adf0e AM |
2389 | } |
2390 | ||
252b5132 | 2391 | void |
709001e9 | 2392 | elf_adjust_symtab (void) |
252b5132 | 2393 | { |
060adf0e AM |
2394 | struct group_list list; |
2395 | unsigned int i; | |
2396 | ||
060adf0e AM |
2397 | /* Go find section groups. */ |
2398 | list.num_group = 0; | |
2399 | list.head = NULL; | |
2400 | list.elt_count = NULL; | |
709001e9 | 2401 | list.indexes = hash_new (); |
dbe2df79 | 2402 | bfd_map_over_sections (stdoutput, build_group_lists, &list); |
3739860c | 2403 | |
060adf0e AM |
2404 | /* Make the SHT_GROUP sections that describe each section group. We |
2405 | can't set up the section contents here yet, because elf section | |
2406 | indices have yet to be calculated. elf.c:set_group_contents does | |
2407 | the rest of the work. */ | |
709001e9 | 2408 | for (i = 0; i < list.num_group; i++) |
060adf0e | 2409 | { |
aa1f4858 | 2410 | const char *group_name = elf_group_name (list.head[i]); |
9758f3fc | 2411 | const char *sec_name; |
060adf0e AM |
2412 | asection *s; |
2413 | flagword flags; | |
9758f3fc | 2414 | struct symbol *sy; |
587aac4e | 2415 | bfd_size_type size; |
060adf0e | 2416 | |
060adf0e | 2417 | flags = SEC_READONLY | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_GROUP; |
d2dab548 | 2418 | for (s = list.head[i]; s != NULL; s = elf_next_in_group (s)) |
68bfbfcc | 2419 | if ((s->flags ^ flags) & SEC_LINK_ONCE) |
d2dab548 AM |
2420 | { |
2421 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
2422 | if (s != list.head[i]) | |
2423 | { | |
2424 | as_warn (_("assuming all members of group `%s' are COMDAT"), | |
2425 | group_name); | |
2426 | break; | |
2427 | } | |
2428 | } | |
2429 | ||
709001e9 | 2430 | sec_name = ".group"; |
9758f3fc | 2431 | s = subseg_force_new (sec_name, 0); |
060adf0e AM |
2432 | if (s == NULL |
2433 | || !bfd_set_section_flags (stdoutput, s, flags) | |
2434 | || !bfd_set_section_alignment (stdoutput, s, 2)) | |
2435 | { | |
2436 | as_fatal (_("can't create group: %s"), | |
2437 | bfd_errmsg (bfd_get_error ())); | |
2438 | } | |
2f89ff8d | 2439 | elf_section_type (s) = SHT_GROUP; |
060adf0e | 2440 | |
aa1f4858 AM |
2441 | /* Pass a pointer to the first section in this group. */ |
2442 | elf_next_in_group (s) = list.head[i]; | |
709001e9 MM |
2443 | /* Make sure that the signature symbol for the group has the |
2444 | name of the group. */ | |
2445 | sy = symbol_find_exact (group_name); | |
2446 | if (!sy | |
2447 | || (sy != symbol_lastP | |
2448 | && (sy->sy_next == NULL | |
2449 | || sy->sy_next->sy_previous != sy))) | |
2450 | { | |
2451 | /* Create the symbol now. */ | |
2452 | sy = symbol_new (group_name, now_seg, (valueT) 0, frag_now); | |
69b70cfe RO |
2453 | #ifdef TE_SOLARIS |
2454 | /* Before Solaris 11 build 154, Sun ld rejects local group | |
2455 | signature symbols, so make them weak hidden instead. */ | |
2456 | symbol_get_bfdsym (sy)->flags |= BSF_WEAK; | |
2457 | S_SET_OTHER (sy, STV_HIDDEN); | |
2458 | #else | |
709001e9 | 2459 | symbol_get_obj (sy)->local = 1; |
69b70cfe | 2460 | #endif |
709001e9 MM |
2461 | symbol_table_insert (sy); |
2462 | } | |
2463 | elf_group_id (s) = symbol_get_bfdsym (sy); | |
060adf0e | 2464 | |
587aac4e AM |
2465 | size = 4 * (list.elt_count[i] + 1); |
2466 | bfd_set_section_size (stdoutput, s, size); | |
b7712f8d | 2467 | s->contents = (unsigned char *) frag_more (size); |
060adf0e | 2468 | frag_now->fr_fix = frag_now_fix_octets (); |
07cb2078 | 2469 | frag_wane (frag_now); |
060adf0e AM |
2470 | } |
2471 | ||
1e9cc1c2 NC |
2472 | /* Cleanup hash. */ |
2473 | hash_traverse (list.indexes, free_section_idx); | |
2474 | hash_die (list.indexes); | |
252b5132 RH |
2475 | } |
2476 | ||
709001e9 MM |
2477 | void |
2478 | elf_frob_file (void) | |
2479 | { | |
2480 | bfd_map_over_sections (stdoutput, adjust_stab_sections, NULL); | |
2481 | ||
2482 | #ifdef elf_tc_final_processing | |
2483 | elf_tc_final_processing (); | |
2484 | #endif | |
2485 | } | |
2486 | ||
4a1805b1 | 2487 | /* It removes any unneeded versioned symbols from the symbol table. */ |
339681c0 L |
2488 | |
2489 | void | |
dbe2df79 | 2490 | elf_frob_file_before_adjust (void) |
339681c0 L |
2491 | { |
2492 | if (symbol_rootP) | |
2493 | { | |
2494 | symbolS *symp; | |
2495 | ||
2496 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) | |
00e6e13d | 2497 | if (!S_IS_DEFINED (symp)) |
79082ff0 | 2498 | { |
00e6e13d | 2499 | if (symbol_get_obj (symp)->versioned_name) |
79082ff0 L |
2500 | { |
2501 | char *p; | |
2502 | ||
2503 | /* The @@@ syntax is a special case. If the symbol is | |
2504 | not defined, 2 `@'s will be removed from the | |
2505 | versioned_name. */ | |
2506 | ||
2507 | p = strchr (symbol_get_obj (symp)->versioned_name, | |
2508 | ELF_VER_CHR); | |
85024cd8 | 2509 | if (p != NULL && p[1] == ELF_VER_CHR && p[2] == ELF_VER_CHR) |
79082ff0 L |
2510 | { |
2511 | size_t l = strlen (&p[3]) + 1; | |
dbe2df79 | 2512 | memmove (&p[1], &p[3], l); |
79082ff0 L |
2513 | } |
2514 | if (symbol_used_p (symp) == 0 | |
2515 | && symbol_used_in_reloc_p (symp) == 0) | |
2516 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
2517 | } | |
00e6e13d JJ |
2518 | |
2519 | /* If there was .weak foo, but foo was neither defined nor | |
2520 | used anywhere, remove it. */ | |
2521 | ||
2522 | else if (S_IS_WEAK (symp) | |
2523 | && symbol_used_p (symp) == 0 | |
2524 | && symbol_used_in_reloc_p (symp) == 0) | |
2525 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
79082ff0 | 2526 | } |
339681c0 L |
2527 | } |
2528 | } | |
2529 | ||
252b5132 RH |
2530 | /* It is required that we let write_relocs have the opportunity to |
2531 | optimize away fixups before output has begun, since it is possible | |
2532 | to eliminate all fixups for a section and thus we never should | |
2533 | have generated the relocation section. */ | |
2534 | ||
2535 | void | |
dbe2df79 | 2536 | elf_frob_file_after_relocs (void) |
252b5132 RH |
2537 | { |
2538 | #ifdef NEED_ECOFF_DEBUG | |
2539 | if (ECOFF_DEBUGGING) | |
2540 | /* Generate the ECOFF debugging information. */ | |
2541 | { | |
2542 | const struct ecoff_debug_swap *debug_swap; | |
2543 | struct ecoff_debug_info debug; | |
2544 | char *buf; | |
2545 | asection *sec; | |
2546 | ||
2547 | debug_swap | |
2548 | = get_elf_backend_data (stdoutput)->elf_backend_ecoff_debug_swap; | |
dbe2df79 | 2549 | know (debug_swap != NULL); |
252b5132 RH |
2550 | ecoff_build_debug (&debug.symbolic_header, &buf, debug_swap); |
2551 | ||
2552 | /* Set up the pointers in debug. */ | |
2553 | #define SET(ptr, offset, type) \ | |
2554 | debug.ptr = (type) (buf + debug.symbolic_header.offset) | |
2555 | ||
2556 | SET (line, cbLineOffset, unsigned char *); | |
dbe2df79 AM |
2557 | SET (external_dnr, cbDnOffset, void *); |
2558 | SET (external_pdr, cbPdOffset, void *); | |
2559 | SET (external_sym, cbSymOffset, void *); | |
2560 | SET (external_opt, cbOptOffset, void *); | |
252b5132 RH |
2561 | SET (external_aux, cbAuxOffset, union aux_ext *); |
2562 | SET (ss, cbSsOffset, char *); | |
dbe2df79 AM |
2563 | SET (external_fdr, cbFdOffset, void *); |
2564 | SET (external_rfd, cbRfdOffset, void *); | |
252b5132 RH |
2565 | /* ssext and external_ext are set up just below. */ |
2566 | ||
2567 | #undef SET | |
2568 | ||
2569 | /* Set up the external symbols. */ | |
2570 | debug.ssext = debug.ssext_end = NULL; | |
2571 | debug.external_ext = debug.external_ext_end = NULL; | |
b34976b6 | 2572 | if (! bfd_ecoff_debug_externals (stdoutput, &debug, debug_swap, TRUE, |
252b5132 | 2573 | elf_get_extr, elf_set_index)) |
6ce8b369 | 2574 | as_fatal (_("failed to set up debugging information: %s"), |
252b5132 RH |
2575 | bfd_errmsg (bfd_get_error ())); |
2576 | ||
2577 | sec = bfd_get_section_by_name (stdoutput, ".mdebug"); | |
9c2799c2 | 2578 | gas_assert (sec != NULL); |
252b5132 | 2579 | |
b34976b6 | 2580 | know (!stdoutput->output_has_begun); |
252b5132 RH |
2581 | |
2582 | /* We set the size of the section, call bfd_set_section_contents | |
2583 | to force the ELF backend to allocate a file position, and then | |
2584 | write out the data. FIXME: Is this really the best way to do | |
2585 | this? */ | |
587aac4e AM |
2586 | bfd_set_section_size |
2587 | (stdoutput, sec, bfd_ecoff_debug_size (stdoutput, &debug, debug_swap)); | |
252b5132 | 2588 | |
5f91fe03 | 2589 | /* Pass BUF to bfd_set_section_contents because this will |
13c56984 AM |
2590 | eventually become a call to fwrite, and ISO C prohibits |
2591 | passing a NULL pointer to a stdio function even if the | |
2592 | pointer will not be used. */ | |
dbe2df79 | 2593 | if (! bfd_set_section_contents (stdoutput, sec, buf, 0, 0)) |
6ce8b369 | 2594 | as_fatal (_("can't start writing .mdebug section: %s"), |
252b5132 RH |
2595 | bfd_errmsg (bfd_get_error ())); |
2596 | ||
b34976b6 | 2597 | know (stdoutput->output_has_begun); |
252b5132 RH |
2598 | know (sec->filepos != 0); |
2599 | ||
2600 | if (! bfd_ecoff_write_debug (stdoutput, &debug, debug_swap, | |
2601 | sec->filepos)) | |
6ce8b369 | 2602 | as_fatal (_("could not write .mdebug section: %s"), |
252b5132 RH |
2603 | bfd_errmsg (bfd_get_error ())); |
2604 | } | |
2605 | #endif /* NEED_ECOFF_DEBUG */ | |
2606 | } | |
2607 | ||
2608 | #ifdef SCO_ELF | |
2609 | ||
aaa2624b | 2610 | /* Heavily plagiarized from obj_elf_version. The idea is to emit the |
252b5132 RH |
2611 | SCO specific identifier in the .notes section to satisfy the SCO |
2612 | linker. | |
2613 | ||
2614 | This looks more complicated than it really is. As opposed to the | |
2615 | "obvious" solution, this should handle the cross dev cases | |
2616 | correctly. (i.e, hosting on a 64 bit big endian processor, but | |
2617 | generating SCO Elf code) Efficiency isn't a concern, as there | |
2618 | should be exactly one of these sections per object module. | |
2619 | ||
2620 | SCO OpenServer 5 identifies it's ELF modules with a standard ELF | |
2621 | .note section. | |
2622 | ||
fa306131 AM |
2623 | int_32 namesz = 4 ; Name size |
2624 | int_32 descsz = 12 ; Descriptive information | |
2625 | int_32 type = 1 ; | |
2626 | char name[4] = "SCO" ; Originator name ALWAYS SCO + NULL | |
252b5132 RH |
2627 | int_32 version = (major ver # << 16) | version of tools ; |
2628 | int_32 source = (tool_id << 16 ) | 1 ; | |
2629 | int_32 info = 0 ; These are set by the SCO tools, but we | |
13c56984 | 2630 | don't know enough about the source |
252b5132 RH |
2631 | environment to set them. SCO ld currently |
2632 | ignores them, and recommends we set them | |
2633 | to zero. */ | |
2634 | ||
2635 | #define SCO_MAJOR_VERSION 0x1 | |
2636 | #define SCO_MINOR_VERSION 0x1 | |
2637 | ||
2638 | void | |
dbe2df79 | 2639 | sco_id (void) |
252b5132 RH |
2640 | { |
2641 | ||
2642 | char *name; | |
2643 | unsigned int c; | |
2644 | char ch; | |
2645 | char *p; | |
2646 | asection *seg = now_seg; | |
2647 | subsegT subseg = now_subseg; | |
2648 | Elf_Internal_Note i_note; | |
2649 | Elf_External_Note e_note; | |
dbe2df79 | 2650 | asection *note_secp = NULL; |
252b5132 RH |
2651 | int i, len; |
2652 | ||
2653 | /* create the .note section */ | |
2654 | ||
2655 | note_secp = subseg_new (".note", 0); | |
2656 | bfd_set_section_flags (stdoutput, | |
2657 | note_secp, | |
2658 | SEC_HAS_CONTENTS | SEC_READONLY); | |
2659 | ||
2660 | /* process the version string */ | |
2661 | ||
fa306131 | 2662 | i_note.namesz = 4; |
252b5132 RH |
2663 | i_note.descsz = 12; /* 12 descriptive bytes */ |
2664 | i_note.type = NT_VERSION; /* Contains a version string */ | |
2665 | ||
2666 | p = frag_more (sizeof (i_note.namesz)); | |
dbe2df79 | 2667 | md_number_to_chars (p, i_note.namesz, 4); |
252b5132 RH |
2668 | |
2669 | p = frag_more (sizeof (i_note.descsz)); | |
dbe2df79 | 2670 | md_number_to_chars (p, i_note.descsz, 4); |
252b5132 RH |
2671 | |
2672 | p = frag_more (sizeof (i_note.type)); | |
dbe2df79 | 2673 | md_number_to_chars (p, i_note.type, 4); |
252b5132 RH |
2674 | |
2675 | p = frag_more (4); | |
fa306131 | 2676 | strcpy (p, "SCO"); |
252b5132 RH |
2677 | |
2678 | /* Note: this is the version number of the ELF we're representing */ | |
2679 | p = frag_more (4); | |
2680 | md_number_to_chars (p, (SCO_MAJOR_VERSION << 16) | (SCO_MINOR_VERSION), 4); | |
2681 | ||
2682 | /* Here, we pick a magic number for ourselves (yes, I "registered" | |
2683 | it with SCO. The bottom bit shows that we are compat with the | |
2684 | SCO ABI. */ | |
2685 | p = frag_more (4); | |
2686 | md_number_to_chars (p, 0x4c520000 | 0x0001, 4); | |
2687 | ||
2688 | /* If we knew (or cared) what the source language options were, we'd | |
2689 | fill them in here. SCO has given us permission to ignore these | |
2690 | and just set them to zero. */ | |
2691 | p = frag_more (4); | |
2692 | md_number_to_chars (p, 0x0000, 4); | |
fa306131 | 2693 | |
252b5132 RH |
2694 | frag_align (2, 0, 0); |
2695 | ||
2696 | /* We probably can't restore the current segment, for there likely | |
2697 | isn't one yet... */ | |
2698 | if (seg && subseg) | |
2699 | subseg_set (seg, subseg); | |
2700 | ||
2701 | } | |
2702 | ||
2703 | #endif /* SCO_ELF */ | |
2704 | ||
bc6b4acc RO |
2705 | static void |
2706 | elf_generate_asm_lineno (void) | |
2707 | { | |
2708 | #ifdef NEED_ECOFF_DEBUG | |
2709 | if (ECOFF_DEBUGGING) | |
2710 | ecoff_generate_asm_lineno (); | |
2711 | #endif | |
2712 | } | |
2713 | ||
2714 | static void | |
bd937d21 L |
2715 | elf_process_stab (segT sec ATTRIBUTE_UNUSED, |
2716 | int what ATTRIBUTE_UNUSED, | |
2717 | const char *string ATTRIBUTE_UNUSED, | |
2718 | int type ATTRIBUTE_UNUSED, | |
2719 | int other ATTRIBUTE_UNUSED, | |
2720 | int desc ATTRIBUTE_UNUSED) | |
bc6b4acc RO |
2721 | { |
2722 | #ifdef NEED_ECOFF_DEBUG | |
2723 | if (ECOFF_DEBUGGING) | |
2724 | ecoff_stab (sec, what, string, type, other, desc); | |
2725 | #endif | |
2726 | } | |
2727 | ||
5110c57e | 2728 | static int |
dbe2df79 | 2729 | elf_separate_stab_sections (void) |
5110c57e HPN |
2730 | { |
2731 | #ifdef NEED_ECOFF_DEBUG | |
2732 | return (!ECOFF_DEBUGGING); | |
2733 | #else | |
2734 | return 1; | |
2735 | #endif | |
2736 | } | |
2737 | ||
2738 | static void | |
dbe2df79 | 2739 | elf_init_stab_section (segT seg) |
5110c57e HPN |
2740 | { |
2741 | #ifdef NEED_ECOFF_DEBUG | |
2742 | if (!ECOFF_DEBUGGING) | |
2743 | #endif | |
2744 | obj_elf_init_stab_section (seg); | |
2745 | } | |
2746 | ||
252b5132 RH |
2747 | const struct format_ops elf_format_ops = |
2748 | { | |
2749 | bfd_target_elf_flavour, | |
4c63da97 AM |
2750 | 0, /* dfl_leading_underscore */ |
2751 | 1, /* emit_section_symbols */ | |
5110c57e HPN |
2752 | elf_begin, |
2753 | elf_file_symbol, | |
252b5132 RH |
2754 | elf_frob_symbol, |
2755 | elf_frob_file, | |
339681c0 | 2756 | elf_frob_file_before_adjust, |
a161fe53 | 2757 | 0, /* obj_frob_file_before_fix */ |
252b5132 RH |
2758 | elf_frob_file_after_relocs, |
2759 | elf_s_get_size, elf_s_set_size, | |
2760 | elf_s_get_align, elf_s_set_align, | |
4c63da97 | 2761 | elf_s_get_other, |
5110c57e | 2762 | elf_s_set_other, |
4c63da97 | 2763 | 0, /* s_get_desc */ |
5110c57e HPN |
2764 | 0, /* s_set_desc */ |
2765 | 0, /* s_get_type */ | |
2766 | 0, /* s_set_type */ | |
252b5132 | 2767 | elf_copy_symbol_attributes, |
bc6b4acc RO |
2768 | elf_generate_asm_lineno, |
2769 | elf_process_stab, | |
5110c57e HPN |
2770 | elf_separate_stab_sections, |
2771 | elf_init_stab_section, | |
252b5132 RH |
2772 | elf_sec_sym_ok_for_reloc, |
2773 | elf_pop_insert, | |
2774 | #ifdef NEED_ECOFF_DEBUG | |
2775 | elf_ecoff_set_ext, | |
2776 | #else | |
4c63da97 | 2777 | 0, /* ecoff_set_ext */ |
252b5132 | 2778 | #endif |
4c63da97 | 2779 | elf_obj_read_begin_hook, |
4cae74aa | 2780 | elf_obj_symbol_new_hook, |
645ea3ea AM |
2781 | 0, |
2782 | elf_adjust_symtab | |
252b5132 | 2783 | }; |