Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* ELF object file format |
cc8a6dd0 | 2 | Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
aa820537 | 3 | 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
ae4a729b | 4 | Free Software Foundation, Inc. |
252b5132 RH |
5 | |
6 | This file is part of GAS, the GNU Assembler. | |
7 | ||
8 | GAS is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as | |
ec2655a6 | 10 | published by the Free Software Foundation; either version 3, |
252b5132 RH |
11 | or (at your option) any later version. |
12 | ||
13 | GAS is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
16 | the GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GAS; see the file COPYING. If not, write to the Free | |
4b4da160 NC |
20 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
21 | 02110-1301, USA. */ | |
252b5132 RH |
22 | |
23 | #define OBJ_HEADER "obj-elf.h" | |
24 | #include "as.h" | |
3882b010 | 25 | #include "safe-ctype.h" |
252b5132 RH |
26 | #include "subsegs.h" |
27 | #include "obstack.h" | |
9758f3fc | 28 | #include "struc-symbol.h" |
87ccc1b0 | 29 | #include "dwarf2dbg.h" |
252b5132 RH |
30 | |
31 | #ifndef ECOFF_DEBUGGING | |
32 | #define ECOFF_DEBUGGING 0 | |
33 | #else | |
34 | #define NEED_ECOFF_DEBUG | |
35 | #endif | |
36 | ||
37 | #ifdef NEED_ECOFF_DEBUG | |
38 | #include "ecoff.h" | |
39 | #endif | |
40 | ||
41 | #ifdef TC_ALPHA | |
42 | #include "elf/alpha.h" | |
43 | #endif | |
44 | ||
45 | #ifdef TC_MIPS | |
46 | #include "elf/mips.h" | |
47 | #endif | |
48 | ||
49 | #ifdef TC_PPC | |
50 | #include "elf/ppc.h" | |
51 | #endif | |
52 | ||
5b93d8bb AM |
53 | #ifdef TC_I370 |
54 | #include "elf/i370.h" | |
55 | #endif | |
56 | ||
3b22753a L |
57 | #ifdef TC_I386 |
58 | #include "elf/x86-64.h" | |
59 | #endif | |
60 | ||
280d71bf DB |
61 | #ifdef TC_MEP |
62 | #include "elf/mep.h" | |
63 | #endif | |
64 | ||
dbe2df79 AM |
65 | static void obj_elf_line (int); |
66 | static void obj_elf_size (int); | |
67 | static void obj_elf_type (int); | |
68 | static void obj_elf_ident (int); | |
69 | static void obj_elf_weak (int); | |
70 | static void obj_elf_local (int); | |
71 | static void obj_elf_visibility (int); | |
72 | static void obj_elf_symver (int); | |
73 | static void obj_elf_subsection (int); | |
74 | static void obj_elf_popsection (int); | |
75 | static void obj_elf_tls_common (int); | |
13c56984 | 76 | static void obj_elf_lcomm (int); |
8fe53b44 | 77 | static void obj_elf_struct (int); |
252b5132 RH |
78 | |
79 | static const pseudo_typeS elf_pseudo_table[] = | |
80 | { | |
81 | {"comm", obj_elf_common, 0}, | |
9be1cda6 | 82 | {"common", obj_elf_common, 1}, |
252b5132 | 83 | {"ident", obj_elf_ident, 0}, |
13c56984 | 84 | {"lcomm", obj_elf_lcomm, 0}, |
252b5132 RH |
85 | {"local", obj_elf_local, 0}, |
86 | {"previous", obj_elf_previous, 0}, | |
87 | {"section", obj_elf_section, 0}, | |
88 | {"section.s", obj_elf_section, 0}, | |
89 | {"sect", obj_elf_section, 0}, | |
90 | {"sect.s", obj_elf_section, 0}, | |
9de8d8f1 RH |
91 | {"pushsection", obj_elf_section, 1}, |
92 | {"popsection", obj_elf_popsection, 0}, | |
252b5132 RH |
93 | {"size", obj_elf_size, 0}, |
94 | {"type", obj_elf_type, 0}, | |
95 | {"version", obj_elf_version, 0}, | |
96 | {"weak", obj_elf_weak, 0}, | |
97 | ||
bf514e21 | 98 | /* These define symbol visibility. */ |
2e13b764 NC |
99 | {"internal", obj_elf_visibility, STV_INTERNAL}, |
100 | {"hidden", obj_elf_visibility, STV_HIDDEN}, | |
101 | {"protected", obj_elf_visibility, STV_PROTECTED}, | |
102 | ||
252b5132 RH |
103 | /* These are used for stabs-in-elf configurations. */ |
104 | {"line", obj_elf_line, 0}, | |
105 | ||
106 | /* This is a GNU extension to handle symbol versions. */ | |
107 | {"symver", obj_elf_symver, 0}, | |
108 | ||
109 | /* A GNU extension to change subsection only. */ | |
110 | {"subsection", obj_elf_subsection, 0}, | |
111 | ||
112 | /* These are GNU extensions to aid in garbage collecting C++ vtables. */ | |
dbe2df79 AM |
113 | {"vtable_inherit", (void (*) (int)) &obj_elf_vtable_inherit, 0}, |
114 | {"vtable_entry", (void (*) (int)) &obj_elf_vtable_entry, 0}, | |
252b5132 | 115 | |
bf514e21 | 116 | /* These are used for dwarf. */ |
252b5132 RH |
117 | {"2byte", cons, 2}, |
118 | {"4byte", cons, 4}, | |
119 | {"8byte", cons, 8}, | |
87ccc1b0 | 120 | /* These are used for dwarf2. */ |
dbe2df79 | 121 | { "file", (void (*) (int)) dwarf2_directive_file, 0 }, |
87ccc1b0 | 122 | { "loc", dwarf2_directive_loc, 0 }, |
07a53e5c | 123 | { "loc_mark_labels", dwarf2_directive_loc_mark_labels, 0 }, |
252b5132 RH |
124 | |
125 | /* We need to trap the section changing calls to handle .previous. */ | |
126 | {"data", obj_elf_data, 0}, | |
8fe53b44 JB |
127 | {"offset", obj_elf_struct, 0}, |
128 | {"struct", obj_elf_struct, 0}, | |
252b5132 RH |
129 | {"text", obj_elf_text, 0}, |
130 | ||
13ae64f3 JJ |
131 | {"tls_common", obj_elf_tls_common, 0}, |
132 | ||
252b5132 | 133 | /* End sentinel. */ |
ab9da554 | 134 | {NULL, NULL, 0}, |
252b5132 RH |
135 | }; |
136 | ||
137 | static const pseudo_typeS ecoff_debug_pseudo_table[] = | |
138 | { | |
139 | #ifdef NEED_ECOFF_DEBUG | |
140 | /* COFF style debugging information for ECOFF. .ln is not used; .loc | |
141 | is used instead. */ | |
142 | { "def", ecoff_directive_def, 0 }, | |
143 | { "dim", ecoff_directive_dim, 0 }, | |
144 | { "endef", ecoff_directive_endef, 0 }, | |
145 | { "file", ecoff_directive_file, 0 }, | |
146 | { "scl", ecoff_directive_scl, 0 }, | |
147 | { "tag", ecoff_directive_tag, 0 }, | |
148 | { "val", ecoff_directive_val, 0 }, | |
149 | ||
150 | /* COFF debugging requires pseudo-ops .size and .type, but ELF | |
151 | already has meanings for those. We use .esize and .etype | |
152 | instead. These are only generated by gcc anyhow. */ | |
153 | { "esize", ecoff_directive_size, 0 }, | |
154 | { "etype", ecoff_directive_type, 0 }, | |
155 | ||
156 | /* ECOFF specific debugging information. */ | |
157 | { "begin", ecoff_directive_begin, 0 }, | |
158 | { "bend", ecoff_directive_bend, 0 }, | |
159 | { "end", ecoff_directive_end, 0 }, | |
160 | { "ent", ecoff_directive_ent, 0 }, | |
161 | { "fmask", ecoff_directive_fmask, 0 }, | |
162 | { "frame", ecoff_directive_frame, 0 }, | |
163 | { "loc", ecoff_directive_loc, 0 }, | |
164 | { "mask", ecoff_directive_mask, 0 }, | |
165 | ||
166 | /* Other ECOFF directives. */ | |
167 | { "extern", ecoff_directive_extern, 0 }, | |
168 | ||
169 | /* These are used on Irix. I don't know how to implement them. */ | |
170 | { "alias", s_ignore, 0 }, | |
171 | { "bgnb", s_ignore, 0 }, | |
172 | { "endb", s_ignore, 0 }, | |
173 | { "lab", s_ignore, 0 }, | |
174 | { "noalias", s_ignore, 0 }, | |
175 | { "verstamp", s_ignore, 0 }, | |
176 | { "vreg", s_ignore, 0 }, | |
177 | #endif | |
178 | ||
ab9da554 | 179 | {NULL, NULL, 0} /* end sentinel */ |
252b5132 RH |
180 | }; |
181 | ||
182 | #undef NO_RELOC | |
183 | #include "aout/aout64.h" | |
184 | ||
185 | /* This is called when the assembler starts. */ | |
186 | ||
3b22753a L |
187 | asection *elf_com_section_ptr; |
188 | ||
252b5132 | 189 | void |
dbe2df79 | 190 | elf_begin (void) |
252b5132 | 191 | { |
dbe2df79 AM |
192 | asection *s; |
193 | ||
252b5132 | 194 | /* Add symbols for the known sections to the symbol table. */ |
dbe2df79 AM |
195 | s = bfd_get_section_by_name (stdoutput, TEXT_SECTION_NAME); |
196 | symbol_table_insert (section_symbol (s)); | |
197 | s = bfd_get_section_by_name (stdoutput, DATA_SECTION_NAME); | |
198 | symbol_table_insert (section_symbol (s)); | |
199 | s = bfd_get_section_by_name (stdoutput, BSS_SECTION_NAME); | |
200 | symbol_table_insert (section_symbol (s)); | |
3b22753a | 201 | elf_com_section_ptr = bfd_com_section_ptr; |
252b5132 RH |
202 | } |
203 | ||
204 | void | |
dbe2df79 | 205 | elf_pop_insert (void) |
252b5132 RH |
206 | { |
207 | pop_insert (elf_pseudo_table); | |
208 | if (ECOFF_DEBUGGING) | |
209 | pop_insert (ecoff_debug_pseudo_table); | |
210 | } | |
211 | ||
212 | static bfd_vma | |
dbe2df79 | 213 | elf_s_get_size (symbolS *sym) |
252b5132 RH |
214 | { |
215 | return S_GET_SIZE (sym); | |
216 | } | |
217 | ||
218 | static void | |
dbe2df79 | 219 | elf_s_set_size (symbolS *sym, bfd_vma sz) |
252b5132 RH |
220 | { |
221 | S_SET_SIZE (sym, sz); | |
222 | } | |
223 | ||
224 | static bfd_vma | |
dbe2df79 | 225 | elf_s_get_align (symbolS *sym) |
252b5132 RH |
226 | { |
227 | return S_GET_ALIGN (sym); | |
228 | } | |
229 | ||
230 | static void | |
dbe2df79 | 231 | elf_s_set_align (symbolS *sym, bfd_vma align) |
252b5132 RH |
232 | { |
233 | S_SET_ALIGN (sym, align); | |
234 | } | |
235 | ||
4c63da97 | 236 | int |
dbe2df79 | 237 | elf_s_get_other (symbolS *sym) |
4c63da97 AM |
238 | { |
239 | return elf_symbol (symbol_get_bfdsym (sym))->internal_elf_sym.st_other; | |
240 | } | |
241 | ||
5110c57e | 242 | static void |
dbe2df79 | 243 | elf_s_set_other (symbolS *sym, int other) |
5110c57e HPN |
244 | { |
245 | S_SET_OTHER (sym, other); | |
246 | } | |
247 | ||
252b5132 | 248 | static int |
dbe2df79 | 249 | elf_sec_sym_ok_for_reloc (asection *sec) |
252b5132 RH |
250 | { |
251 | return obj_sec_sym_ok_for_reloc (sec); | |
252 | } | |
253 | ||
254 | void | |
c04f5787 | 255 | elf_file_symbol (const char *s, int appfile) |
252b5132 | 256 | { |
c04f5787 AM |
257 | if (!appfile |
258 | || symbol_rootP == NULL | |
259 | || symbol_rootP->bsym == NULL | |
260 | || (symbol_rootP->bsym->flags & BSF_FILE) == 0) | |
261 | { | |
262 | symbolS *sym; | |
efa19bfd | 263 | unsigned int name_length; |
252b5132 | 264 | |
c04f5787 AM |
265 | sym = symbol_new (s, absolute_section, 0, NULL); |
266 | symbol_set_frag (sym, &zero_address_frag); | |
efa19bfd JB |
267 | |
268 | name_length = strlen (s); | |
269 | if (name_length > strlen (S_GET_NAME (sym))) | |
270 | { | |
271 | obstack_grow (¬es, s, name_length + 1); | |
272 | S_SET_NAME (sym, obstack_finish (¬es)); | |
273 | } | |
274 | else | |
275 | strcpy ((char *) S_GET_NAME (sym), s); | |
276 | ||
c04f5787 | 277 | symbol_get_bfdsym (sym)->flags |= BSF_FILE; |
252b5132 | 278 | |
c04f5787 AM |
279 | if (symbol_rootP != sym) |
280 | { | |
281 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); | |
282 | symbol_insert (sym, symbol_rootP, &symbol_rootP, &symbol_lastP); | |
252b5132 | 283 | #ifdef DEBUG |
c04f5787 | 284 | verify_symbol_chain (symbol_rootP, symbol_lastP); |
252b5132 | 285 | #endif |
c04f5787 | 286 | } |
252b5132 RH |
287 | } |
288 | ||
289 | #ifdef NEED_ECOFF_DEBUG | |
f17c130b | 290 | ecoff_new_file (s, appfile); |
252b5132 RH |
291 | #endif |
292 | } | |
293 | ||
e13bab5a AM |
294 | /* Called from read.c:s_comm after we've parsed .comm symbol, size. |
295 | Parse a possible alignment value. */ | |
296 | ||
3b22753a | 297 | symbolS * |
e13bab5a | 298 | elf_common_parse (int ignore ATTRIBUTE_UNUSED, symbolS *symbolP, addressT size) |
252b5132 | 299 | { |
e13bab5a AM |
300 | addressT align = 0; |
301 | int is_local = symbol_get_obj (symbolP)->local; | |
252b5132 | 302 | |
e13bab5a | 303 | if (*input_line_pointer == ',') |
9be1cda6 | 304 | { |
e13bab5a | 305 | char *save = input_line_pointer; |
9be1cda6 | 306 | |
252b5132 RH |
307 | input_line_pointer++; |
308 | SKIP_WHITESPACE (); | |
e13bab5a AM |
309 | |
310 | if (*input_line_pointer == '"') | |
252b5132 | 311 | { |
e13bab5a AM |
312 | /* For sparc. Accept .common symbol, length, "bss" */ |
313 | input_line_pointer++; | |
314 | /* Some use the dot, some don't. */ | |
315 | if (*input_line_pointer == '.') | |
316 | input_line_pointer++; | |
317 | /* Some say data, some say bss. */ | |
318 | if (strncmp (input_line_pointer, "bss\"", 4) == 0) | |
319 | input_line_pointer += 4; | |
320 | else if (strncmp (input_line_pointer, "data\"", 5) == 0) | |
321 | input_line_pointer += 5; | |
322 | else | |
252b5132 | 323 | { |
e13bab5a AM |
324 | char *p = input_line_pointer; |
325 | char c; | |
326 | ||
327 | while (*--p != '"') | |
328 | ; | |
329 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
330 | if (*input_line_pointer++ == '"') | |
331 | break; | |
332 | c = *input_line_pointer; | |
333 | *input_line_pointer = '\0'; | |
334 | as_bad (_("bad .common segment %s"), p); | |
335 | *input_line_pointer = c; | |
336 | ignore_rest_of_line (); | |
337 | return NULL; | |
252b5132 | 338 | } |
e13bab5a AM |
339 | /* ??? Don't ask me why these are always global. */ |
340 | is_local = 0; | |
252b5132 RH |
341 | } |
342 | else | |
343 | { | |
e13bab5a AM |
344 | input_line_pointer = save; |
345 | align = parse_align (is_local); | |
346 | if (align == (addressT) -1) | |
347 | return NULL; | |
252b5132 RH |
348 | } |
349 | } | |
e13bab5a AM |
350 | |
351 | if (is_local) | |
352 | { | |
353 | bss_alloc (symbolP, size, align); | |
354 | S_CLEAR_EXTERNAL (symbolP); | |
355 | } | |
252b5132 RH |
356 | else |
357 | { | |
e13bab5a AM |
358 | S_SET_VALUE (symbolP, size); |
359 | S_SET_ALIGN (symbolP, align); | |
360 | S_SET_EXTERNAL (symbolP); | |
3b22753a | 361 | S_SET_SEGMENT (symbolP, elf_com_section_ptr); |
252b5132 RH |
362 | } |
363 | ||
49309057 | 364 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; |
252b5132 | 365 | |
13ae64f3 | 366 | return symbolP; |
252b5132 RH |
367 | } |
368 | ||
13ae64f3 | 369 | void |
dbe2df79 | 370 | obj_elf_common (int is_common) |
13ae64f3 | 371 | { |
e13bab5a AM |
372 | if (flag_mri && is_common) |
373 | s_mri_common (0); | |
374 | else | |
375 | s_comm_internal (0, elf_common_parse); | |
13ae64f3 JJ |
376 | } |
377 | ||
378 | static void | |
dbe2df79 | 379 | obj_elf_tls_common (int ignore ATTRIBUTE_UNUSED) |
13ae64f3 | 380 | { |
e13bab5a | 381 | symbolS *symbolP = s_comm_internal (0, elf_common_parse); |
13ae64f3 JJ |
382 | |
383 | if (symbolP) | |
384 | symbol_get_bfdsym (symbolP)->flags |= BSF_THREAD_LOCAL; | |
385 | } | |
386 | ||
13c56984 AM |
387 | static void |
388 | obj_elf_lcomm (int ignore ATTRIBUTE_UNUSED) | |
389 | { | |
390 | symbolS *symbolP = s_comm_internal (0, s_lcomm_internal); | |
391 | ||
392 | if (symbolP) | |
393 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; | |
394 | } | |
395 | ||
252b5132 | 396 | static void |
dbe2df79 | 397 | obj_elf_local (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
398 | { |
399 | char *name; | |
400 | int c; | |
401 | symbolS *symbolP; | |
402 | ||
403 | do | |
404 | { | |
405 | name = input_line_pointer; | |
406 | c = get_symbol_end (); | |
407 | symbolP = symbol_find_or_make (name); | |
408 | *input_line_pointer = c; | |
409 | SKIP_WHITESPACE (); | |
410 | S_CLEAR_EXTERNAL (symbolP); | |
49309057 | 411 | symbol_get_obj (symbolP)->local = 1; |
252b5132 RH |
412 | if (c == ',') |
413 | { | |
414 | input_line_pointer++; | |
415 | SKIP_WHITESPACE (); | |
416 | if (*input_line_pointer == '\n') | |
417 | c = '\n'; | |
418 | } | |
419 | } | |
420 | while (c == ','); | |
421 | demand_empty_rest_of_line (); | |
422 | } | |
423 | ||
424 | static void | |
dbe2df79 | 425 | obj_elf_weak (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
426 | { |
427 | char *name; | |
428 | int c; | |
429 | symbolS *symbolP; | |
430 | ||
431 | do | |
432 | { | |
433 | name = input_line_pointer; | |
434 | c = get_symbol_end (); | |
435 | symbolP = symbol_find_or_make (name); | |
436 | *input_line_pointer = c; | |
437 | SKIP_WHITESPACE (); | |
438 | S_SET_WEAK (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 | ||
2e13b764 | 452 | static void |
dbe2df79 | 453 | obj_elf_visibility (int visibility) |
2e13b764 NC |
454 | { |
455 | char *name; | |
456 | int c; | |
457 | symbolS *symbolP; | |
458 | asymbol *bfdsym; | |
459 | elf_symbol_type *elfsym; | |
460 | ||
461 | do | |
462 | { | |
463 | name = input_line_pointer; | |
464 | c = get_symbol_end (); | |
465 | symbolP = symbol_find_or_make (name); | |
466 | *input_line_pointer = c; | |
fa306131 | 467 | |
2e13b764 | 468 | SKIP_WHITESPACE (); |
fa306131 | 469 | |
2e13b764 NC |
470 | bfdsym = symbol_get_bfdsym (symbolP); |
471 | elfsym = elf_symbol_from (bfd_asymbol_bfd (bfdsym), bfdsym); | |
fa306131 | 472 | |
9c2799c2 | 473 | gas_assert (elfsym); |
fa306131 | 474 | |
20e420c2 RH |
475 | elfsym->internal_elf_sym.st_other &= ~3; |
476 | elfsym->internal_elf_sym.st_other |= visibility; | |
fa306131 | 477 | |
2e13b764 NC |
478 | if (c == ',') |
479 | { | |
480 | input_line_pointer ++; | |
fa306131 | 481 | |
2e13b764 | 482 | SKIP_WHITESPACE (); |
fa306131 | 483 | |
2e13b764 NC |
484 | if (*input_line_pointer == '\n') |
485 | c = '\n'; | |
486 | } | |
487 | } | |
488 | while (c == ','); | |
fa306131 | 489 | |
2e13b764 NC |
490 | demand_empty_rest_of_line (); |
491 | } | |
492 | ||
252b5132 RH |
493 | static segT previous_section; |
494 | static int previous_subsection; | |
495 | ||
9de8d8f1 RH |
496 | struct section_stack |
497 | { | |
498 | struct section_stack *next; | |
499 | segT seg, prev_seg; | |
500 | int subseg, prev_subseg; | |
501 | }; | |
502 | ||
503 | static struct section_stack *section_stack; | |
504 | ||
fafe6678 | 505 | static bfd_boolean |
86654c12 L |
506 | get_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *inf) |
507 | { | |
fafe6678 | 508 | const char *gname = inf; |
86654c12 | 509 | const char *group_name = elf_group_name (sec); |
01fb1836 | 510 | |
fafe6678 | 511 | return (group_name == gname |
86654c12 | 512 | || (group_name != NULL |
fafe6678 L |
513 | && gname != NULL |
514 | && strcmp (group_name, gname) == 0)); | |
86654c12 L |
515 | } |
516 | ||
252b5132 RH |
517 | /* Handle the .section pseudo-op. This code supports two different |
518 | syntaxes. | |
519 | ||
520 | The first is found on Solaris, and looks like | |
521 | .section ".sec1",#alloc,#execinstr,#write | |
522 | Here the names after '#' are the SHF_* flags to turn on for the | |
523 | section. I'm not sure how it determines the SHT_* type (BFD | |
524 | doesn't really give us control over the type, anyhow). | |
525 | ||
526 | The second format is found on UnixWare, and probably most SVR4 | |
527 | machines, and looks like | |
528 | .section .sec1,"a",@progbits | |
529 | The quoted string may contain any combination of a, w, x, and | |
530 | represents the SHF_* flags to turn on for the section. The string | |
531 | beginning with '@' can be progbits or nobits. There should be | |
532 | other possibilities, but I don't know what they are. In any case, | |
533 | BFD doesn't really let us set the section type. */ | |
534 | ||
cca86cc8 | 535 | void |
dbe2df79 AM |
536 | obj_elf_change_section (const char *name, |
537 | int type, | |
01e1a5bc | 538 | bfd_vma attr, |
dbe2df79 AM |
539 | int entsize, |
540 | const char *group_name, | |
541 | int linkonce, | |
542 | int push) | |
252b5132 | 543 | { |
fafe6678 | 544 | asection *old_sec; |
252b5132 | 545 | segT sec; |
742f45cf | 546 | flagword flags; |
551b43fd | 547 | const struct elf_backend_data *bed; |
f61e8019 | 548 | const struct bfd_elf_special_section *ssect; |
252b5132 RH |
549 | |
550 | #ifdef md_flush_pending_output | |
551 | md_flush_pending_output (); | |
552 | #endif | |
553 | ||
9de8d8f1 RH |
554 | /* Switch to the section, creating it if necessary. */ |
555 | if (push) | |
556 | { | |
557 | struct section_stack *elt; | |
558 | elt = xmalloc (sizeof (struct section_stack)); | |
559 | elt->next = section_stack; | |
560 | elt->seg = now_seg; | |
561 | elt->prev_seg = previous_section; | |
562 | elt->subseg = now_subseg; | |
563 | elt->prev_subseg = previous_subsection; | |
564 | section_stack = elt; | |
565 | } | |
566 | previous_section = now_seg; | |
567 | previous_subsection = now_subseg; | |
568 | ||
fafe6678 L |
569 | old_sec = bfd_get_section_by_name_if (stdoutput, name, get_section, |
570 | (void *) group_name); | |
571 | if (old_sec) | |
86654c12 | 572 | { |
fafe6678 | 573 | sec = old_sec; |
86654c12 L |
574 | subseg_set (sec, 0); |
575 | } | |
576 | else | |
577 | sec = subseg_force_new (name, 0); | |
578 | ||
551b43fd AM |
579 | bed = get_elf_backend_data (stdoutput); |
580 | ssect = (*bed->get_sec_type_attr) (stdoutput, sec); | |
9de8d8f1 | 581 | |
f61e8019 | 582 | if (ssect != NULL) |
2f89ff8d | 583 | { |
ea8f8eab L |
584 | bfd_boolean override = FALSE; |
585 | ||
2f89ff8d | 586 | if (type == SHT_NULL) |
f61e8019 AM |
587 | type = ssect->type; |
588 | else if (type != ssect->type) | |
2f89ff8d | 589 | { |
fafe6678 | 590 | if (old_sec == NULL |
2f89ff8d | 591 | /* FIXME: gcc, as of 2002-10-22, will emit |
7ed1d346 | 592 | |
2f89ff8d | 593 | .section .init_array,"aw",@progbits |
7ed1d346 | 594 | |
2f89ff8d | 595 | for __attribute__ ((section (".init_array"))). |
3b22753a L |
596 | "@progbits" is incorrect. Also for x86-64 large bss |
597 | sections, gcc, as of 2005-07-06, will emit | |
598 | ||
599 | .section .lbss,"aw",@progbits | |
600 | ||
2f89ff8d | 601 | "@progbits" is incorrect. */ |
3b22753a L |
602 | #ifdef TC_I386 |
603 | && (bed->s->arch_size != 64 | |
604 | || !(ssect->attr & SHF_X86_64_LARGE)) | |
605 | #endif | |
f61e8019 AM |
606 | && ssect->type != SHT_INIT_ARRAY |
607 | && ssect->type != SHT_FINI_ARRAY | |
608 | && ssect->type != SHT_PREINIT_ARRAY) | |
2f89ff8d L |
609 | { |
610 | /* We allow to specify any type for a .note section. */ | |
f61e8019 | 611 | if (ssect->type != SHT_NOTE) |
2f89ff8d L |
612 | as_warn (_("setting incorrect section type for %s"), |
613 | name); | |
614 | } | |
615 | else | |
616 | { | |
617 | as_warn (_("ignoring incorrect section type for %s"), | |
742f45cf | 618 | name); |
f61e8019 | 619 | type = ssect->type; |
2f89ff8d L |
620 | } |
621 | } | |
622 | ||
fafe6678 | 623 | if (old_sec == NULL && (attr & ~ssect->attr) != 0) |
2f89ff8d L |
624 | { |
625 | /* As a GNU extension, we permit a .note section to be | |
f61e8019 | 626 | allocatable. If the linker sees an allocatable .note |
2f89ff8d | 627 | section, it will create a PT_NOTE segment in the output |
92191b29 | 628 | file. We also allow "x" for .note.GNU-stack. */ |
f61e8019 AM |
629 | if (ssect->type == SHT_NOTE |
630 | && (attr == SHF_ALLOC || attr == SHF_EXECINSTR)) | |
631 | ; | |
632 | /* Allow different SHF_MERGE and SHF_STRINGS if we have | |
633 | something like .rodata.str. */ | |
634 | else if (ssect->suffix_length == -2 | |
635 | && name[ssect->prefix_length] == '.' | |
ea8f8eab L |
636 | && (attr |
637 | & ~ssect->attr | |
638 | & ~SHF_MERGE | |
639 | & ~SHF_STRINGS) == 0) | |
f61e8019 | 640 | ; |
ea8f8eab L |
641 | /* .interp, .strtab and .symtab can have SHF_ALLOC. */ |
642 | else if (attr == SHF_ALLOC | |
643 | && (strcmp (name, ".interp") == 0 | |
644 | || strcmp (name, ".strtab") == 0 | |
645 | || strcmp (name, ".symtab") == 0)) | |
646 | override = TRUE; | |
b9f18452 L |
647 | /* .note.GNU-stack can have SHF_EXECINSTR. */ |
648 | else if (attr == SHF_EXECINSTR | |
649 | && strcmp (name, ".note.GNU-stack") == 0) | |
650 | override = TRUE; | |
7f841127 L |
651 | #ifdef TC_ALPHA |
652 | /* A section on Alpha may have SHF_ALPHA_GPREL. */ | |
653 | else if ((attr & ~ssect->attr) == SHF_ALPHA_GPREL) | |
654 | override = TRUE; | |
655 | #endif | |
f61e8019 | 656 | else |
ea8f8eab | 657 | { |
86654c12 L |
658 | if (group_name == NULL) |
659 | as_warn (_("setting incorrect section attributes for %s"), | |
660 | name); | |
ea8f8eab L |
661 | override = TRUE; |
662 | } | |
2f89ff8d | 663 | } |
fafe6678 | 664 | if (!override && old_sec == NULL) |
f61e8019 | 665 | attr |= ssect->attr; |
2f89ff8d | 666 | } |
742f45cf AM |
667 | |
668 | /* Convert ELF type and flags to BFD flags. */ | |
669 | flags = (SEC_RELOC | |
670 | | ((attr & SHF_WRITE) ? 0 : SEC_READONLY) | |
671 | | ((attr & SHF_ALLOC) ? SEC_ALLOC : 0) | |
672 | | (((attr & SHF_ALLOC) && type != SHT_NOBITS) ? SEC_LOAD : 0) | |
f5fa8ca2 JJ |
673 | | ((attr & SHF_EXECINSTR) ? SEC_CODE : 0) |
674 | | ((attr & SHF_MERGE) ? SEC_MERGE : 0) | |
13ae64f3 JJ |
675 | | ((attr & SHF_STRINGS) ? SEC_STRINGS : 0) |
676 | | ((attr & SHF_TLS) ? SEC_THREAD_LOCAL : 0)); | |
9de8d8f1 | 677 | #ifdef md_elf_section_flags |
742f45cf | 678 | flags = md_elf_section_flags (flags, attr, type); |
9de8d8f1 RH |
679 | #endif |
680 | ||
86654c12 L |
681 | if (linkonce) |
682 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
683 | ||
fafe6678 | 684 | if (old_sec == NULL) |
742f45cf AM |
685 | { |
686 | symbolS *secsym; | |
687 | ||
94be91de JB |
688 | if (type == SHT_NULL) |
689 | type = bfd_elf_get_default_section_type (flags); | |
7a6d0b32 JB |
690 | elf_section_type (sec) = type; |
691 | elf_section_flags (sec) = attr; | |
692 | ||
9de8d8f1 RH |
693 | /* Prevent SEC_HAS_CONTENTS from being inadvertently set. */ |
694 | if (type == SHT_NOBITS) | |
13c56984 | 695 | seg_info (sec)->bss = 1; |
9de8d8f1 RH |
696 | |
697 | bfd_set_section_flags (stdoutput, sec, flags); | |
f5fa8ca2 JJ |
698 | if (flags & SEC_MERGE) |
699 | sec->entsize = entsize; | |
aa1f4858 | 700 | elf_group_name (sec) = group_name; |
9de8d8f1 RH |
701 | |
702 | /* Add a symbol for this section to the symbol table. */ | |
703 | secsym = symbol_find (name); | |
704 | if (secsym != NULL) | |
705 | symbol_set_bfdsym (secsym, sec->symbol); | |
706 | else | |
13c56984 | 707 | symbol_table_insert (section_symbol (sec)); |
9de8d8f1 | 708 | } |
7a6d0b32 | 709 | else |
742f45cf | 710 | { |
7a6d0b32 JB |
711 | if (type != SHT_NULL |
712 | && (unsigned) type != elf_section_type (old_sec)) | |
713 | as_warn (_("ignoring changed section type for %s"), name); | |
714 | ||
715 | if (attr != 0) | |
716 | { | |
717 | /* If section attributes are specified the second time we see a | |
718 | particular section, then check that they are the same as we | |
719 | saw the first time. */ | |
720 | if (((old_sec->flags ^ flags) | |
721 | & (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE | |
722 | | SEC_EXCLUDE | SEC_SORT_ENTRIES | SEC_MERGE | SEC_STRINGS | |
723 | | SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD | |
724 | | SEC_THREAD_LOCAL))) | |
725 | as_warn (_("ignoring changed section attributes for %s"), name); | |
726 | if ((flags & SEC_MERGE) && old_sec->entsize != (unsigned) entsize) | |
727 | as_warn (_("ignoring changed section entity size for %s"), name); | |
728 | } | |
742f45cf | 729 | } |
9de8d8f1 RH |
730 | |
731 | #ifdef md_elf_section_change_hook | |
742f45cf | 732 | md_elf_section_change_hook (); |
9de8d8f1 RH |
733 | #endif |
734 | } | |
735 | ||
01e1a5bc | 736 | static bfd_vma |
dbe2df79 | 737 | obj_elf_parse_section_letters (char *str, size_t len) |
9de8d8f1 | 738 | { |
01e1a5bc | 739 | bfd_vma attr = 0; |
9de8d8f1 RH |
740 | |
741 | while (len > 0) | |
742 | { | |
743 | switch (*str) | |
744 | { | |
745 | case 'a': | |
746 | attr |= SHF_ALLOC; | |
747 | break; | |
748 | case 'w': | |
749 | attr |= SHF_WRITE; | |
750 | break; | |
751 | case 'x': | |
752 | attr |= SHF_EXECINSTR; | |
753 | break; | |
9469ddf0 | 754 | case 'M': |
f5fa8ca2 JJ |
755 | attr |= SHF_MERGE; |
756 | break; | |
9469ddf0 | 757 | case 'S': |
f5fa8ca2 JJ |
758 | attr |= SHF_STRINGS; |
759 | break; | |
060adf0e AM |
760 | case 'G': |
761 | attr |= SHF_GROUP; | |
762 | break; | |
13ae64f3 JJ |
763 | case 'T': |
764 | attr |= SHF_TLS; | |
765 | break; | |
34105363 L |
766 | /* Compatibility. */ |
767 | case 'm': | |
768 | if (*(str - 1) == 'a') | |
769 | { | |
770 | attr |= SHF_MERGE; | |
771 | if (len > 1 && str[1] == 's') | |
772 | { | |
773 | attr |= SHF_STRINGS; | |
774 | str++, len--; | |
775 | } | |
776 | break; | |
777 | } | |
9de8d8f1 RH |
778 | default: |
779 | { | |
13ae64f3 | 780 | char *bad_msg = _("unrecognized .section attribute: want a,w,x,M,S,G,T"); |
9de8d8f1 | 781 | #ifdef md_elf_section_letter |
01e1a5bc NC |
782 | bfd_vma md_attr = md_elf_section_letter (*str, &bad_msg); |
783 | if (md_attr > 0) | |
9de8d8f1 RH |
784 | attr |= md_attr; |
785 | else | |
786 | #endif | |
711ef82f | 787 | as_fatal ("%s", bad_msg); |
9de8d8f1 RH |
788 | } |
789 | break; | |
790 | } | |
791 | str++, len--; | |
792 | } | |
793 | ||
794 | return attr; | |
795 | } | |
796 | ||
8d28c9d7 | 797 | static int |
44bf2362 | 798 | obj_elf_section_type (char *str, size_t len, bfd_boolean warn) |
9de8d8f1 RH |
799 | { |
800 | if (len == 8 && strncmp (str, "progbits", 8) == 0) | |
801 | return SHT_PROGBITS; | |
802 | if (len == 6 && strncmp (str, "nobits", 6) == 0) | |
803 | return SHT_NOBITS; | |
34f70875 L |
804 | if (len == 4 && strncmp (str, "note", 4) == 0) |
805 | return SHT_NOTE; | |
10b016c2 PB |
806 | if (len == 10 && strncmp (str, "init_array", 10) == 0) |
807 | return SHT_INIT_ARRAY; | |
808 | if (len == 10 && strncmp (str, "fini_array", 10) == 0) | |
809 | return SHT_FINI_ARRAY; | |
810 | if (len == 13 && strncmp (str, "preinit_array", 13) == 0) | |
811 | return SHT_PREINIT_ARRAY; | |
9de8d8f1 RH |
812 | |
813 | #ifdef md_elf_section_type | |
814 | { | |
815 | int md_type = md_elf_section_type (str, len); | |
816 | if (md_type >= 0) | |
817 | return md_type; | |
818 | } | |
819 | #endif | |
820 | ||
44bf2362 NC |
821 | if (warn) |
822 | as_warn (_("unrecognized section type")); | |
823 | return 0; | |
824 | } | |
825 | ||
01e1a5bc | 826 | static bfd_vma |
44bf2362 NC |
827 | obj_elf_section_word (char *str, size_t len, int *type) |
828 | { | |
829 | int ret; | |
830 | ||
831 | if (len == 5 && strncmp (str, "write", 5) == 0) | |
832 | return SHF_WRITE; | |
833 | if (len == 5 && strncmp (str, "alloc", 5) == 0) | |
834 | return SHF_ALLOC; | |
835 | if (len == 9 && strncmp (str, "execinstr", 9) == 0) | |
836 | return SHF_EXECINSTR; | |
837 | if (len == 3 && strncmp (str, "tls", 3) == 0) | |
838 | return SHF_TLS; | |
839 | ||
840 | #ifdef md_elf_section_word | |
841 | { | |
01e1a5bc NC |
842 | bfd_vma md_attr = md_elf_section_word (str, len); |
843 | if (md_attr > 0) | |
44bf2362 NC |
844 | return md_attr; |
845 | } | |
846 | #endif | |
847 | ||
848 | ret = obj_elf_section_type (str, len, FALSE); | |
849 | if (ret != 0) | |
850 | *type = ret; | |
851 | else | |
852 | as_warn (_("unrecognized section attribute")); | |
853 | ||
9de8d8f1 RH |
854 | return 0; |
855 | } | |
856 | ||
6ce8b369 AM |
857 | /* Get name of section. */ |
858 | static char * | |
dbe2df79 | 859 | obj_elf_section_name (void) |
6ce8b369 AM |
860 | { |
861 | char *name; | |
862 | ||
863 | SKIP_WHITESPACE (); | |
864 | if (*input_line_pointer == '"') | |
865 | { | |
866 | int dummy; | |
867 | ||
868 | name = demand_copy_C_string (&dummy); | |
869 | if (name == NULL) | |
870 | { | |
871 | ignore_rest_of_line (); | |
872 | return NULL; | |
873 | } | |
874 | } | |
875 | else | |
876 | { | |
877 | char *end = input_line_pointer; | |
878 | ||
879 | while (0 == strchr ("\n\t,; ", *end)) | |
880 | end++; | |
881 | if (end == input_line_pointer) | |
882 | { | |
c95b35a9 | 883 | as_bad (_("missing name")); |
6ce8b369 AM |
884 | ignore_rest_of_line (); |
885 | return NULL; | |
886 | } | |
887 | ||
888 | name = xmalloc (end - input_line_pointer + 1); | |
889 | memcpy (name, input_line_pointer, end - input_line_pointer); | |
890 | name[end - input_line_pointer] = '\0'; | |
612d7b83 L |
891 | #ifdef tc_canonicalize_section_name |
892 | name = tc_canonicalize_section_name (name); | |
893 | #endif | |
6ce8b369 AM |
894 | input_line_pointer = end; |
895 | } | |
896 | SKIP_WHITESPACE (); | |
897 | return name; | |
898 | } | |
899 | ||
9de8d8f1 | 900 | void |
dbe2df79 | 901 | obj_elf_section (int push) |
9de8d8f1 | 902 | { |
aa1f4858 | 903 | char *name, *group_name, *beg; |
01e1a5bc NC |
904 | int type, dummy; |
905 | bfd_vma attr; | |
f5fa8ca2 | 906 | int entsize; |
d2dab548 | 907 | int linkonce; |
6f932bce | 908 | subsegT new_subsection = -1; |
9de8d8f1 | 909 | |
5b93d8bb | 910 | #ifndef TC_I370 |
252b5132 RH |
911 | if (flag_mri) |
912 | { | |
913 | char mri_type; | |
914 | ||
9de8d8f1 | 915 | #ifdef md_flush_pending_output |
60bcf0fa | 916 | md_flush_pending_output (); |
9de8d8f1 RH |
917 | #endif |
918 | ||
252b5132 RH |
919 | previous_section = now_seg; |
920 | previous_subsection = now_subseg; | |
921 | ||
922 | s_mri_sect (&mri_type); | |
923 | ||
924 | #ifdef md_elf_section_change_hook | |
925 | md_elf_section_change_hook (); | |
926 | #endif | |
927 | ||
928 | return; | |
929 | } | |
5b93d8bb | 930 | #endif /* ! defined (TC_I370) */ |
252b5132 | 931 | |
6ce8b369 AM |
932 | name = obj_elf_section_name (); |
933 | if (name == NULL) | |
934 | return; | |
252b5132 RH |
935 | type = SHT_NULL; |
936 | attr = 0; | |
aa1f4858 | 937 | group_name = NULL; |
f5fa8ca2 | 938 | entsize = 0; |
d2dab548 | 939 | linkonce = 0; |
252b5132 RH |
940 | |
941 | if (*input_line_pointer == ',') | |
942 | { | |
943 | /* Skip the comma. */ | |
944 | ++input_line_pointer; | |
252b5132 RH |
945 | SKIP_WHITESPACE (); |
946 | ||
9cfc3331 | 947 | if (push && ISDIGIT (*input_line_pointer)) |
6f932bce | 948 | { |
9cfc3331 | 949 | /* .pushsection has an optional subsection. */ |
6f932bce | 950 | new_subsection = (subsegT) get_absolute_expression (); |
9cfc3331 L |
951 | |
952 | SKIP_WHITESPACE (); | |
953 | ||
954 | /* Stop if we don't see a comma. */ | |
955 | if (*input_line_pointer != ',') | |
956 | goto done; | |
957 | ||
958 | /* Skip the comma. */ | |
959 | ++input_line_pointer; | |
960 | SKIP_WHITESPACE (); | |
6f932bce | 961 | } |
9cfc3331 L |
962 | |
963 | if (*input_line_pointer == '"') | |
252b5132 | 964 | { |
9de8d8f1 RH |
965 | beg = demand_copy_C_string (&dummy); |
966 | if (beg == NULL) | |
252b5132 | 967 | { |
9de8d8f1 RH |
968 | ignore_rest_of_line (); |
969 | return; | |
252b5132 | 970 | } |
9de8d8f1 | 971 | attr |= obj_elf_parse_section_letters (beg, strlen (beg)); |
252b5132 RH |
972 | |
973 | SKIP_WHITESPACE (); | |
974 | if (*input_line_pointer == ',') | |
975 | { | |
9de8d8f1 | 976 | char c; |
060adf0e AM |
977 | char *save = input_line_pointer; |
978 | ||
252b5132 RH |
979 | ++input_line_pointer; |
980 | SKIP_WHITESPACE (); | |
9de8d8f1 RH |
981 | c = *input_line_pointer; |
982 | if (c == '"') | |
252b5132 | 983 | { |
9de8d8f1 RH |
984 | beg = demand_copy_C_string (&dummy); |
985 | if (beg == NULL) | |
252b5132 | 986 | { |
9de8d8f1 RH |
987 | ignore_rest_of_line (); |
988 | return; | |
252b5132 | 989 | } |
44bf2362 | 990 | type = obj_elf_section_type (beg, strlen (beg), TRUE); |
9de8d8f1 RH |
991 | } |
992 | else if (c == '@' || c == '%') | |
993 | { | |
994 | beg = ++input_line_pointer; | |
995 | c = get_symbol_end (); | |
996 | *input_line_pointer = c; | |
44bf2362 | 997 | type = obj_elf_section_type (beg, input_line_pointer - beg, TRUE); |
252b5132 | 998 | } |
060adf0e AM |
999 | else |
1000 | input_line_pointer = save; | |
252b5132 | 1001 | } |
f5fa8ca2 JJ |
1002 | |
1003 | SKIP_WHITESPACE (); | |
6ce8b369 | 1004 | if ((attr & SHF_MERGE) != 0 && *input_line_pointer == ',') |
f5fa8ca2 JJ |
1005 | { |
1006 | ++input_line_pointer; | |
1007 | SKIP_WHITESPACE (); | |
1008 | entsize = get_absolute_expression (); | |
6ce8b369 | 1009 | SKIP_WHITESPACE (); |
f5fa8ca2 JJ |
1010 | if (entsize < 0) |
1011 | { | |
6ce8b369 | 1012 | as_warn (_("invalid merge entity size")); |
f5fa8ca2 JJ |
1013 | attr &= ~SHF_MERGE; |
1014 | entsize = 0; | |
1015 | } | |
1016 | } | |
6ce8b369 AM |
1017 | else if ((attr & SHF_MERGE) != 0) |
1018 | { | |
1019 | as_warn (_("entity size for SHF_MERGE not specified")); | |
1020 | attr &= ~SHF_MERGE; | |
1021 | } | |
060adf0e AM |
1022 | |
1023 | if ((attr & SHF_GROUP) != 0 && *input_line_pointer == ',') | |
1024 | { | |
1025 | ++input_line_pointer; | |
aa1f4858 AM |
1026 | group_name = obj_elf_section_name (); |
1027 | if (group_name == NULL) | |
060adf0e | 1028 | attr &= ~SHF_GROUP; |
d2dab548 AM |
1029 | else if (strncmp (input_line_pointer, ",comdat", 7) == 0) |
1030 | { | |
1031 | input_line_pointer += 7; | |
1032 | linkonce = 1; | |
1033 | } | |
1034 | else if (strncmp (name, ".gnu.linkonce", 13) == 0) | |
1035 | linkonce = 1; | |
060adf0e AM |
1036 | } |
1037 | else if ((attr & SHF_GROUP) != 0) | |
1038 | { | |
1039 | as_warn (_("group name for SHF_GROUP not specified")); | |
1040 | attr &= ~SHF_GROUP; | |
1041 | } | |
252b5132 RH |
1042 | } |
1043 | else | |
1044 | { | |
1045 | do | |
1046 | { | |
9de8d8f1 RH |
1047 | char c; |
1048 | ||
252b5132 RH |
1049 | SKIP_WHITESPACE (); |
1050 | if (*input_line_pointer != '#') | |
1051 | { | |
c95b35a9 | 1052 | as_bad (_("character following name is not '#'")); |
252b5132 RH |
1053 | ignore_rest_of_line (); |
1054 | return; | |
1055 | } | |
9de8d8f1 RH |
1056 | beg = ++input_line_pointer; |
1057 | c = get_symbol_end (); | |
1058 | *input_line_pointer = c; | |
1059 | ||
44bf2362 | 1060 | attr |= obj_elf_section_word (beg, input_line_pointer - beg, & type); |
9de8d8f1 | 1061 | |
252b5132 RH |
1062 | SKIP_WHITESPACE (); |
1063 | } | |
1064 | while (*input_line_pointer++ == ','); | |
1065 | --input_line_pointer; | |
1066 | } | |
1067 | } | |
1068 | ||
9cfc3331 | 1069 | done: |
252b5132 | 1070 | demand_empty_rest_of_line (); |
9de8d8f1 | 1071 | |
d2dab548 | 1072 | obj_elf_change_section (name, type, attr, entsize, group_name, linkonce, push); |
6f932bce NC |
1073 | |
1074 | if (push && new_subsection != -1) | |
1075 | subseg_set (now_seg, new_subsection); | |
252b5132 RH |
1076 | } |
1077 | ||
1078 | /* Change to the .data section. */ | |
1079 | ||
16b93d88 | 1080 | void |
dbe2df79 | 1081 | obj_elf_data (int i) |
252b5132 RH |
1082 | { |
1083 | #ifdef md_flush_pending_output | |
1084 | md_flush_pending_output (); | |
1085 | #endif | |
1086 | ||
1087 | previous_section = now_seg; | |
1088 | previous_subsection = now_subseg; | |
1089 | s_data (i); | |
1090 | ||
1091 | #ifdef md_elf_section_change_hook | |
1092 | md_elf_section_change_hook (); | |
1093 | #endif | |
1094 | } | |
1095 | ||
1096 | /* Change to the .text section. */ | |
1097 | ||
16b93d88 | 1098 | void |
dbe2df79 | 1099 | obj_elf_text (int i) |
252b5132 RH |
1100 | { |
1101 | #ifdef md_flush_pending_output | |
1102 | md_flush_pending_output (); | |
1103 | #endif | |
1104 | ||
1105 | previous_section = now_seg; | |
1106 | previous_subsection = now_subseg; | |
1107 | s_text (i); | |
1108 | ||
1109 | #ifdef md_elf_section_change_hook | |
1110 | md_elf_section_change_hook (); | |
1111 | #endif | |
1112 | } | |
1113 | ||
8fe53b44 JB |
1114 | /* Change to the *ABS* section. */ |
1115 | ||
1116 | void | |
1117 | obj_elf_struct (int i) | |
1118 | { | |
1119 | #ifdef md_flush_pending_output | |
1120 | md_flush_pending_output (); | |
1121 | #endif | |
1122 | ||
1123 | previous_section = now_seg; | |
1124 | previous_subsection = now_subseg; | |
1125 | s_struct (i); | |
1126 | ||
1127 | #ifdef md_elf_section_change_hook | |
1128 | md_elf_section_change_hook (); | |
1129 | #endif | |
1130 | } | |
1131 | ||
252b5132 | 1132 | static void |
dbe2df79 | 1133 | obj_elf_subsection (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1134 | { |
6f932bce | 1135 | int temp; |
252b5132 RH |
1136 | |
1137 | #ifdef md_flush_pending_output | |
1138 | md_flush_pending_output (); | |
1139 | #endif | |
1140 | ||
1141 | previous_section = now_seg; | |
1142 | previous_subsection = now_subseg; | |
1143 | ||
1144 | temp = get_absolute_expression (); | |
1145 | subseg_set (now_seg, (subsegT) temp); | |
1146 | demand_empty_rest_of_line (); | |
1147 | ||
1148 | #ifdef md_elf_section_change_hook | |
1149 | md_elf_section_change_hook (); | |
1150 | #endif | |
1151 | } | |
1152 | ||
1153 | /* This can be called from the processor backends if they change | |
1154 | sections. */ | |
1155 | ||
1156 | void | |
dbe2df79 | 1157 | obj_elf_section_change_hook (void) |
252b5132 RH |
1158 | { |
1159 | previous_section = now_seg; | |
1160 | previous_subsection = now_subseg; | |
1161 | } | |
1162 | ||
1163 | void | |
dbe2df79 | 1164 | obj_elf_previous (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1165 | { |
9de8d8f1 RH |
1166 | segT new_section; |
1167 | int new_subsection; | |
1168 | ||
252b5132 RH |
1169 | if (previous_section == 0) |
1170 | { | |
6ce8b369 | 1171 | as_warn (_(".previous without corresponding .section; ignored")); |
252b5132 RH |
1172 | return; |
1173 | } | |
1174 | ||
1175 | #ifdef md_flush_pending_output | |
1176 | md_flush_pending_output (); | |
1177 | #endif | |
1178 | ||
9de8d8f1 RH |
1179 | new_section = previous_section; |
1180 | new_subsection = previous_subsection; | |
1181 | previous_section = now_seg; | |
1182 | previous_subsection = now_subseg; | |
1183 | subseg_set (new_section, new_subsection); | |
1184 | ||
1185 | #ifdef md_elf_section_change_hook | |
1186 | md_elf_section_change_hook (); | |
1187 | #endif | |
1188 | } | |
1189 | ||
1190 | static void | |
dbe2df79 | 1191 | obj_elf_popsection (int xxx ATTRIBUTE_UNUSED) |
9de8d8f1 RH |
1192 | { |
1193 | struct section_stack *top = section_stack; | |
1194 | ||
1195 | if (top == NULL) | |
1196 | { | |
6ce8b369 | 1197 | as_warn (_(".popsection without corresponding .pushsection; ignored")); |
9de8d8f1 RH |
1198 | return; |
1199 | } | |
1200 | ||
1201 | #ifdef md_flush_pending_output | |
1202 | md_flush_pending_output (); | |
1203 | #endif | |
1204 | ||
1205 | section_stack = top->next; | |
1206 | previous_section = top->prev_seg; | |
1207 | previous_subsection = top->prev_subseg; | |
1208 | subseg_set (top->seg, top->subseg); | |
1209 | free (top); | |
252b5132 RH |
1210 | |
1211 | #ifdef md_elf_section_change_hook | |
1212 | md_elf_section_change_hook (); | |
1213 | #endif | |
1214 | } | |
1215 | ||
1216 | static void | |
dbe2df79 | 1217 | obj_elf_line (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1218 | { |
1219 | /* Assume delimiter is part of expression. BSD4.2 as fails with | |
bf514e21 | 1220 | delightful bug, so we are not being incompatible here. */ |
dbe2df79 | 1221 | new_logical_line (NULL, get_absolute_expression ()); |
252b5132 RH |
1222 | demand_empty_rest_of_line (); |
1223 | } | |
1224 | ||
1225 | /* This handles the .symver pseudo-op, which is used to specify a | |
1226 | symbol version. The syntax is ``.symver NAME,SYMVERNAME''. | |
1227 | SYMVERNAME may contain ELF_VER_CHR ('@') characters. This | |
1228 | pseudo-op causes the assembler to emit a symbol named SYMVERNAME | |
1229 | with the same value as the symbol NAME. */ | |
1230 | ||
1231 | static void | |
dbe2df79 | 1232 | obj_elf_symver (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1233 | { |
1234 | char *name; | |
1235 | char c; | |
468cced8 | 1236 | char old_lexat; |
252b5132 RH |
1237 | symbolS *sym; |
1238 | ||
1239 | name = input_line_pointer; | |
1240 | c = get_symbol_end (); | |
1241 | ||
1242 | sym = symbol_find_or_make (name); | |
1243 | ||
1244 | *input_line_pointer = c; | |
1245 | ||
252b5132 RH |
1246 | SKIP_WHITESPACE (); |
1247 | if (*input_line_pointer != ',') | |
1248 | { | |
1249 | as_bad (_("expected comma after name in .symver")); | |
1250 | ignore_rest_of_line (); | |
1251 | return; | |
1252 | } | |
1253 | ||
1254 | ++input_line_pointer; | |
eba874d8 | 1255 | SKIP_WHITESPACE (); |
252b5132 | 1256 | name = input_line_pointer; |
468cced8 AM |
1257 | |
1258 | /* Temporarily include '@' in symbol names. */ | |
1259 | old_lexat = lex_type[(unsigned char) '@']; | |
1260 | lex_type[(unsigned char) '@'] |= LEX_NAME; | |
1261 | c = get_symbol_end (); | |
1262 | lex_type[(unsigned char) '@'] = old_lexat; | |
252b5132 | 1263 | |
339681c0 L |
1264 | if (symbol_get_obj (sym)->versioned_name == NULL) |
1265 | { | |
1266 | symbol_get_obj (sym)->versioned_name = xstrdup (name); | |
252b5132 | 1267 | |
339681c0 | 1268 | *input_line_pointer = c; |
252b5132 | 1269 | |
6f620856 L |
1270 | if (strchr (symbol_get_obj (sym)->versioned_name, |
1271 | ELF_VER_CHR) == NULL) | |
339681c0 L |
1272 | { |
1273 | as_bad (_("missing version name in `%s' for symbol `%s'"), | |
1274 | symbol_get_obj (sym)->versioned_name, | |
1275 | S_GET_NAME (sym)); | |
1276 | ignore_rest_of_line (); | |
1277 | return; | |
1278 | } | |
1279 | } | |
1280 | else | |
252b5132 | 1281 | { |
339681c0 L |
1282 | if (strcmp (symbol_get_obj (sym)->versioned_name, name)) |
1283 | { | |
1284 | as_bad (_("multiple versions [`%s'|`%s'] for symbol `%s'"), | |
1285 | name, symbol_get_obj (sym)->versioned_name, | |
1286 | S_GET_NAME (sym)); | |
1287 | ignore_rest_of_line (); | |
1288 | return; | |
1289 | } | |
1290 | ||
1291 | *input_line_pointer = c; | |
252b5132 RH |
1292 | } |
1293 | ||
1294 | demand_empty_rest_of_line (); | |
1295 | } | |
1296 | ||
1297 | /* This handles the .vtable_inherit pseudo-op, which is used to indicate | |
1298 | to the linker the hierarchy in which a particular table resides. The | |
1299 | syntax is ".vtable_inherit CHILDNAME, PARENTNAME". */ | |
1300 | ||
904a31bf | 1301 | struct fix * |
dbe2df79 | 1302 | obj_elf_vtable_inherit (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1303 | { |
1304 | char *cname, *pname; | |
1305 | symbolS *csym, *psym; | |
1306 | char c, bad = 0; | |
1307 | ||
1308 | if (*input_line_pointer == '#') | |
1309 | ++input_line_pointer; | |
1310 | ||
1311 | cname = input_line_pointer; | |
1312 | c = get_symbol_end (); | |
1313 | csym = symbol_find (cname); | |
1314 | ||
1315 | /* GCFIXME: should check that we don't have two .vtable_inherits for | |
1316 | the same child symbol. Also, we can currently only do this if the | |
1317 | child symbol is already exists and is placed in a fragment. */ | |
1318 | ||
49309057 | 1319 | if (csym == NULL || symbol_get_frag (csym) == NULL) |
252b5132 | 1320 | { |
bd3ba5d1 | 1321 | as_bad (_("expected `%s' to have already been set for .vtable_inherit"), |
252b5132 RH |
1322 | cname); |
1323 | bad = 1; | |
1324 | } | |
1325 | ||
1326 | *input_line_pointer = c; | |
1327 | ||
1328 | SKIP_WHITESPACE (); | |
1329 | if (*input_line_pointer != ',') | |
1330 | { | |
bd3ba5d1 | 1331 | as_bad (_("expected comma after name in .vtable_inherit")); |
252b5132 | 1332 | ignore_rest_of_line (); |
904a31bf | 1333 | return NULL; |
252b5132 RH |
1334 | } |
1335 | ||
1336 | ++input_line_pointer; | |
1337 | SKIP_WHITESPACE (); | |
1338 | ||
1339 | if (*input_line_pointer == '#') | |
1340 | ++input_line_pointer; | |
1341 | ||
1342 | if (input_line_pointer[0] == '0' | |
1343 | && (input_line_pointer[1] == '\0' | |
3882b010 | 1344 | || ISSPACE (input_line_pointer[1]))) |
252b5132 RH |
1345 | { |
1346 | psym = section_symbol (absolute_section); | |
1347 | ++input_line_pointer; | |
1348 | } | |
1349 | else | |
1350 | { | |
1351 | pname = input_line_pointer; | |
1352 | c = get_symbol_end (); | |
1353 | psym = symbol_find_or_make (pname); | |
1354 | *input_line_pointer = c; | |
1355 | } | |
1356 | ||
1357 | demand_empty_rest_of_line (); | |
1358 | ||
1359 | if (bad) | |
904a31bf | 1360 | return NULL; |
252b5132 | 1361 | |
9c2799c2 | 1362 | gas_assert (symbol_get_value_expression (csym)->X_op == O_constant); |
904a31bf AM |
1363 | return fix_new (symbol_get_frag (csym), |
1364 | symbol_get_value_expression (csym)->X_add_number, | |
1365 | 0, psym, 0, 0, BFD_RELOC_VTABLE_INHERIT); | |
252b5132 | 1366 | } |
fa306131 | 1367 | |
252b5132 RH |
1368 | /* This handles the .vtable_entry pseudo-op, which is used to indicate |
1369 | to the linker that a vtable slot was used. The syntax is | |
1370 | ".vtable_entry tablename, offset". */ | |
1371 | ||
904a31bf | 1372 | struct fix * |
dbe2df79 | 1373 | obj_elf_vtable_entry (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1374 | { |
1375 | char *name; | |
1376 | symbolS *sym; | |
1377 | offsetT offset; | |
1378 | char c; | |
1379 | ||
1380 | if (*input_line_pointer == '#') | |
1381 | ++input_line_pointer; | |
1382 | ||
1383 | name = input_line_pointer; | |
1384 | c = get_symbol_end (); | |
1385 | sym = symbol_find_or_make (name); | |
1386 | *input_line_pointer = c; | |
1387 | ||
1388 | SKIP_WHITESPACE (); | |
1389 | if (*input_line_pointer != ',') | |
1390 | { | |
bd3ba5d1 | 1391 | as_bad (_("expected comma after name in .vtable_entry")); |
252b5132 | 1392 | ignore_rest_of_line (); |
904a31bf | 1393 | return NULL; |
252b5132 RH |
1394 | } |
1395 | ||
1396 | ++input_line_pointer; | |
1397 | if (*input_line_pointer == '#') | |
1398 | ++input_line_pointer; | |
1399 | ||
1400 | offset = get_absolute_expression (); | |
1401 | ||
252b5132 | 1402 | demand_empty_rest_of_line (); |
904a31bf AM |
1403 | |
1404 | return fix_new (frag_now, frag_now_fix (), 0, sym, offset, 0, | |
1405 | BFD_RELOC_VTABLE_ENTRY); | |
252b5132 RH |
1406 | } |
1407 | ||
1408 | void | |
dbe2df79 | 1409 | elf_obj_read_begin_hook (void) |
252b5132 RH |
1410 | { |
1411 | #ifdef NEED_ECOFF_DEBUG | |
1412 | if (ECOFF_DEBUGGING) | |
1413 | ecoff_read_begin_hook (); | |
1414 | #endif | |
1415 | } | |
1416 | ||
1417 | void | |
dbe2df79 | 1418 | elf_obj_symbol_new_hook (symbolS *symbolP) |
252b5132 | 1419 | { |
49309057 ILT |
1420 | struct elf_obj_sy *sy_obj; |
1421 | ||
1422 | sy_obj = symbol_get_obj (symbolP); | |
1423 | sy_obj->size = NULL; | |
1424 | sy_obj->versioned_name = NULL; | |
252b5132 RH |
1425 | |
1426 | #ifdef NEED_ECOFF_DEBUG | |
1427 | if (ECOFF_DEBUGGING) | |
1428 | ecoff_symbol_new_hook (symbolP); | |
1429 | #endif | |
1430 | } | |
1431 | ||
8fd3e36b AM |
1432 | /* When setting one symbol equal to another, by default we probably |
1433 | want them to have the same "size", whatever it means in the current | |
1434 | context. */ | |
1435 | ||
1436 | void | |
dbe2df79 | 1437 | elf_copy_symbol_attributes (symbolS *dest, symbolS *src) |
8fd3e36b | 1438 | { |
060adf0e AM |
1439 | struct elf_obj_sy *srcelf = symbol_get_obj (src); |
1440 | struct elf_obj_sy *destelf = symbol_get_obj (dest); | |
1441 | if (srcelf->size) | |
1442 | { | |
1443 | if (destelf->size == NULL) | |
dbe2df79 | 1444 | destelf->size = xmalloc (sizeof (expressionS)); |
060adf0e AM |
1445 | *destelf->size = *srcelf->size; |
1446 | } | |
1447 | else | |
1448 | { | |
1449 | if (destelf->size != NULL) | |
1450 | free (destelf->size); | |
1451 | destelf->size = NULL; | |
1452 | } | |
1453 | S_SET_SIZE (dest, S_GET_SIZE (src)); | |
26eb4093 JJ |
1454 | /* Don't copy visibility. */ |
1455 | S_SET_OTHER (dest, (ELF_ST_VISIBILITY (S_GET_OTHER (dest)) | |
1456 | | (S_GET_OTHER (src) & ~ELF_ST_VISIBILITY (-1)))); | |
8fd3e36b AM |
1457 | } |
1458 | ||
252b5132 | 1459 | void |
dbe2df79 | 1460 | obj_elf_version (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1461 | { |
1462 | char *name; | |
1463 | unsigned int c; | |
252b5132 RH |
1464 | char *p; |
1465 | asection *seg = now_seg; | |
1466 | subsegT subseg = now_subseg; | |
1467 | Elf_Internal_Note i_note; | |
1468 | Elf_External_Note e_note; | |
dbe2df79 | 1469 | asection *note_secp = NULL; |
252b5132 RH |
1470 | |
1471 | SKIP_WHITESPACE (); | |
1472 | if (*input_line_pointer == '\"') | |
1473 | { | |
6afdfa61 NC |
1474 | unsigned int len; |
1475 | ||
bf514e21 | 1476 | ++input_line_pointer; /* -> 1st char of string. */ |
252b5132 RH |
1477 | name = input_line_pointer; |
1478 | ||
1479 | while (is_a_char (c = next_char_of_string ())) | |
1480 | ; | |
1481 | c = *input_line_pointer; | |
1482 | *input_line_pointer = '\0'; | |
1483 | *(input_line_pointer - 1) = '\0'; | |
1484 | *input_line_pointer = c; | |
1485 | ||
6afdfa61 | 1486 | /* Create the .note section. */ |
252b5132 RH |
1487 | note_secp = subseg_new (".note", 0); |
1488 | bfd_set_section_flags (stdoutput, | |
1489 | note_secp, | |
1490 | SEC_HAS_CONTENTS | SEC_READONLY); | |
1491 | ||
6afdfa61 NC |
1492 | /* Process the version string. */ |
1493 | len = strlen (name) + 1; | |
252b5132 | 1494 | |
6afdfa61 NC |
1495 | /* PR 3456: Although the name field is padded out to an 4-byte |
1496 | boundary, the namesz field should not be adjusted. */ | |
1497 | i_note.namesz = len; | |
1498 | i_note.descsz = 0; /* No description. */ | |
252b5132 RH |
1499 | i_note.type = NT_VERSION; |
1500 | p = frag_more (sizeof (e_note.namesz)); | |
dbe2df79 | 1501 | md_number_to_chars (p, i_note.namesz, sizeof (e_note.namesz)); |
252b5132 | 1502 | p = frag_more (sizeof (e_note.descsz)); |
dbe2df79 | 1503 | md_number_to_chars (p, i_note.descsz, sizeof (e_note.descsz)); |
252b5132 | 1504 | p = frag_more (sizeof (e_note.type)); |
dbe2df79 | 1505 | md_number_to_chars (p, i_note.type, sizeof (e_note.type)); |
6afdfa61 | 1506 | p = frag_more (len); |
5ab504f9 | 1507 | memcpy (p, name, len); |
252b5132 | 1508 | |
252b5132 RH |
1509 | frag_align (2, 0, 0); |
1510 | ||
1511 | subseg_set (seg, subseg); | |
1512 | } | |
1513 | else | |
6afdfa61 NC |
1514 | as_bad (_("expected quoted string")); |
1515 | ||
252b5132 RH |
1516 | demand_empty_rest_of_line (); |
1517 | } | |
1518 | ||
1519 | static void | |
dbe2df79 | 1520 | obj_elf_size (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1521 | { |
1522 | char *name = input_line_pointer; | |
1523 | char c = get_symbol_end (); | |
1524 | char *p; | |
1525 | expressionS exp; | |
1526 | symbolS *sym; | |
1527 | ||
1528 | p = input_line_pointer; | |
1529 | *p = c; | |
1530 | SKIP_WHITESPACE (); | |
1531 | if (*input_line_pointer != ',') | |
1532 | { | |
1533 | *p = 0; | |
1534 | as_bad (_("expected comma after name `%s' in .size directive"), name); | |
1535 | *p = c; | |
1536 | ignore_rest_of_line (); | |
1537 | return; | |
1538 | } | |
1539 | input_line_pointer++; | |
1540 | expression (&exp); | |
1541 | if (exp.X_op == O_absent) | |
1542 | { | |
1543 | as_bad (_("missing expression in .size directive")); | |
1544 | exp.X_op = O_constant; | |
1545 | exp.X_add_number = 0; | |
1546 | } | |
1547 | *p = 0; | |
1548 | sym = symbol_find_or_make (name); | |
1549 | *p = c; | |
1550 | if (exp.X_op == O_constant) | |
c538998c JJ |
1551 | { |
1552 | S_SET_SIZE (sym, exp.X_add_number); | |
1553 | if (symbol_get_obj (sym)->size) | |
1554 | { | |
1555 | xfree (symbol_get_obj (sym)->size); | |
1556 | symbol_get_obj (sym)->size = NULL; | |
1557 | } | |
1558 | } | |
252b5132 RH |
1559 | else |
1560 | { | |
dbe2df79 | 1561 | symbol_get_obj (sym)->size = xmalloc (sizeof (expressionS)); |
49309057 | 1562 | *symbol_get_obj (sym)->size = exp; |
252b5132 RH |
1563 | } |
1564 | demand_empty_rest_of_line (); | |
1565 | } | |
1566 | ||
1567 | /* Handle the ELF .type pseudo-op. This sets the type of a symbol. | |
44bf2362 | 1568 | There are six syntaxes: |
fa306131 | 1569 | |
252b5132 RH |
1570 | The first (used on Solaris) is |
1571 | .type SYM,#function | |
1572 | The second (used on UnixWare) is | |
1573 | .type SYM,@function | |
1574 | The third (reportedly to be used on Irix 6.0) is | |
1575 | .type SYM STT_FUNC | |
1576 | The fourth (used on NetBSD/Arm and Linux/ARM) is | |
1577 | .type SYM,%function | |
aa8c34c3 JE |
1578 | The fifth (used on SVR4/860) is |
1579 | .type SYM,"function" | |
44bf2362 NC |
1580 | The sixth (emitted by recent SunPRO under Solaris) is |
1581 | .type SYM,[0-9] | |
1582 | where the integer is the STT_* value. | |
252b5132 RH |
1583 | */ |
1584 | ||
44bf2362 NC |
1585 | static char * |
1586 | obj_elf_type_name (char *cp) | |
1587 | { | |
1588 | char *p; | |
1589 | ||
1590 | p = input_line_pointer; | |
1591 | if (*input_line_pointer >= '0' | |
1592 | && *input_line_pointer <= '9') | |
1593 | { | |
1594 | while (*input_line_pointer >= '0' | |
1595 | && *input_line_pointer <= '9') | |
1596 | ++input_line_pointer; | |
1597 | *cp = *input_line_pointer; | |
1598 | *input_line_pointer = '\0'; | |
1599 | } | |
1600 | else | |
1601 | *cp = get_symbol_end (); | |
1602 | ||
1603 | return p; | |
1604 | } | |
1605 | ||
252b5132 | 1606 | static void |
dbe2df79 | 1607 | obj_elf_type (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1608 | { |
1609 | char *name; | |
1610 | char c; | |
1611 | int type; | |
1612 | const char *typename; | |
1613 | symbolS *sym; | |
904a31bf | 1614 | elf_symbol_type *elfsym; |
252b5132 RH |
1615 | |
1616 | name = input_line_pointer; | |
1617 | c = get_symbol_end (); | |
1618 | sym = symbol_find_or_make (name); | |
904a31bf | 1619 | elfsym = (elf_symbol_type *) symbol_get_bfdsym (sym); |
252b5132 RH |
1620 | *input_line_pointer = c; |
1621 | ||
1622 | SKIP_WHITESPACE (); | |
1623 | if (*input_line_pointer == ',') | |
1624 | ++input_line_pointer; | |
1625 | ||
1626 | SKIP_WHITESPACE (); | |
1627 | if ( *input_line_pointer == '#' | |
1628 | || *input_line_pointer == '@' | |
aa8c34c3 | 1629 | || *input_line_pointer == '"' |
252b5132 RH |
1630 | || *input_line_pointer == '%') |
1631 | ++input_line_pointer; | |
1632 | ||
44bf2362 | 1633 | typename = obj_elf_type_name (& c); |
252b5132 RH |
1634 | |
1635 | type = 0; | |
1636 | if (strcmp (typename, "function") == 0 | |
44bf2362 | 1637 | || strcmp (typename, "2") == 0 |
252b5132 RH |
1638 | || strcmp (typename, "STT_FUNC") == 0) |
1639 | type = BSF_FUNCTION; | |
1640 | else if (strcmp (typename, "object") == 0 | |
44bf2362 | 1641 | || strcmp (typename, "1") == 0 |
252b5132 RH |
1642 | || strcmp (typename, "STT_OBJECT") == 0) |
1643 | type = BSF_OBJECT; | |
b9734f35 | 1644 | else if (strcmp (typename, "tls_object") == 0 |
44bf2362 | 1645 | || strcmp (typename, "6") == 0 |
b9734f35 JJ |
1646 | || strcmp (typename, "STT_TLS") == 0) |
1647 | type = BSF_OBJECT | BSF_THREAD_LOCAL; | |
e7b9a8c1 | 1648 | else if (strcmp (typename, "notype") == 0 |
44bf2362 | 1649 | || strcmp (typename, "0") == 0 |
e7b9a8c1 L |
1650 | || strcmp (typename, "STT_NOTYPE") == 0) |
1651 | ; | |
504b7d20 | 1652 | else if (strcmp (typename, "common") == 0 |
44bf2362 | 1653 | || strcmp (typename, "5") == 0 |
504b7d20 NC |
1654 | || strcmp (typename, "STT_COMMON") == 0) |
1655 | { | |
1656 | type = BSF_OBJECT; | |
1657 | ||
1658 | if (! S_IS_COMMON (sym)) | |
1659 | { | |
1660 | if (S_IS_VOLATILE (sym)) | |
1661 | { | |
1662 | sym = symbol_clone (sym, 1); | |
1663 | S_SET_SEGMENT (sym, bfd_com_section_ptr); | |
1664 | S_SET_VALUE (sym, 0); | |
1665 | S_SET_EXTERNAL (sym); | |
1666 | symbol_set_frag (sym, &zero_address_frag); | |
1667 | S_CLEAR_VOLATILE (sym); | |
1668 | } | |
1669 | else if (S_IS_DEFINED (sym) || symbol_equated_p (sym)) | |
1670 | as_bad (_("symbol '%s' is already defined"), S_GET_NAME (sym)); | |
1671 | else | |
1672 | { | |
1673 | /* FIXME: Is it safe to just change the section ? */ | |
1674 | S_SET_SEGMENT (sym, bfd_com_section_ptr); | |
1675 | S_SET_VALUE (sym, 0); | |
1676 | S_SET_EXTERNAL (sym); | |
1677 | } | |
1678 | } | |
1679 | } | |
d8045f23 | 1680 | else if (strcmp (typename, "gnu_indirect_function") == 0 |
3e7a7d11 NC |
1681 | || strcmp (typename, "10") == 0 |
1682 | || strcmp (typename, "STT_GNU_IFUNC") == 0) | |
d8045f23 NC |
1683 | { |
1684 | const struct elf_backend_data *bed; | |
1685 | ||
1686 | bed = get_elf_backend_data (stdoutput); | |
1687 | if (!(bed->elf_osabi == ELFOSABI_LINUX | |
1688 | /* GNU/Linux is still using the default value 0. */ | |
1689 | || bed->elf_osabi == ELFOSABI_NONE)) | |
1690 | as_bad (_("symbol type \"%s\" is supported only by GNU targets"), | |
1691 | typename); | |
1692 | type = BSF_FUNCTION | BSF_GNU_INDIRECT_FUNCTION; | |
1693 | } | |
3e7a7d11 NC |
1694 | else if (strcmp (typename, "gnu_unique_object") == 0) |
1695 | { | |
d3ce72d0 | 1696 | struct elf_backend_data *bed; |
3e7a7d11 | 1697 | |
d3ce72d0 | 1698 | bed = (struct elf_backend_data *) get_elf_backend_data (stdoutput); |
3e7a7d11 NC |
1699 | if (!(bed->elf_osabi == ELFOSABI_LINUX |
1700 | /* GNU/Linux is still using the default value 0. */ | |
1701 | || bed->elf_osabi == ELFOSABI_NONE)) | |
1702 | as_bad (_("symbol type \"%s\" is supported only by GNU targets"), | |
1703 | typename); | |
1704 | type = BSF_OBJECT | BSF_GNU_UNIQUE; | |
d3ce72d0 NC |
1705 | /* PR 10549: Always set OSABI field to LINUX for objects containing unique symbols. */ |
1706 | bed->elf_osabi = ELFOSABI_LINUX; | |
3e7a7d11 | 1707 | } |
904a31bf AM |
1708 | #ifdef md_elf_symbol_type |
1709 | else if ((type = md_elf_symbol_type (typename, sym, elfsym)) != -1) | |
1710 | ; | |
1711 | #endif | |
252b5132 | 1712 | else |
6ce8b369 | 1713 | as_bad (_("unrecognized symbol type \"%s\""), typename); |
252b5132 RH |
1714 | |
1715 | *input_line_pointer = c; | |
1716 | ||
aa8c34c3 JE |
1717 | if (*input_line_pointer == '"') |
1718 | ++input_line_pointer; | |
1719 | ||
904a31bf | 1720 | elfsym->symbol.flags |= type; |
252b5132 RH |
1721 | |
1722 | demand_empty_rest_of_line (); | |
1723 | } | |
1724 | ||
1725 | static void | |
dbe2df79 | 1726 | obj_elf_ident (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1727 | { |
1728 | static segT comment_section; | |
1729 | segT old_section = now_seg; | |
1730 | int old_subsection = now_subseg; | |
1731 | ||
5f91fe03 ILT |
1732 | #ifdef md_flush_pending_output |
1733 | md_flush_pending_output (); | |
1734 | #endif | |
1735 | ||
252b5132 RH |
1736 | if (!comment_section) |
1737 | { | |
1738 | char *p; | |
1739 | comment_section = subseg_new (".comment", 0); | |
1740 | bfd_set_section_flags (stdoutput, comment_section, | |
01fb1836 RM |
1741 | SEC_READONLY | SEC_HAS_CONTENTS |
1742 | | SEC_MERGE | SEC_STRINGS); | |
1743 | comment_section->entsize = 1; | |
cd000bff DJ |
1744 | #ifdef md_elf_section_change_hook |
1745 | md_elf_section_change_hook (); | |
1746 | #endif | |
252b5132 RH |
1747 | p = frag_more (1); |
1748 | *p = 0; | |
1749 | } | |
1750 | else | |
1751 | subseg_set (comment_section, 0); | |
38a57ae7 | 1752 | stringer (8 + 1); |
252b5132 RH |
1753 | subseg_set (old_section, old_subsection); |
1754 | } | |
1755 | ||
1756 | #ifdef INIT_STAB_SECTION | |
1757 | ||
1758 | /* The first entry in a .stabs section is special. */ | |
1759 | ||
1760 | void | |
dbe2df79 | 1761 | obj_elf_init_stab_section (segT seg) |
252b5132 RH |
1762 | { |
1763 | char *file; | |
1764 | char *p; | |
1765 | char *stabstr_name; | |
1766 | unsigned int stroff; | |
1767 | ||
1768 | /* Force the section to align to a longword boundary. Without this, | |
1769 | UnixWare ar crashes. */ | |
1770 | bfd_set_section_alignment (stdoutput, seg, 2); | |
1771 | ||
bf514e21 | 1772 | /* Make space for this first symbol. */ |
252b5132 | 1773 | p = frag_more (12); |
bf514e21 | 1774 | /* Zero it out. */ |
252b5132 | 1775 | memset (p, 0, 12); |
dbe2df79 AM |
1776 | as_where (&file, NULL); |
1777 | stabstr_name = xmalloc (strlen (segment_name (seg)) + 4); | |
252b5132 RH |
1778 | strcpy (stabstr_name, segment_name (seg)); |
1779 | strcat (stabstr_name, "str"); | |
1780 | stroff = get_stab_string_offset (file, stabstr_name); | |
1781 | know (stroff == 1); | |
1782 | md_number_to_chars (p, stroff, 4); | |
1783 | seg_info (seg)->stabu.p = p; | |
1784 | } | |
1785 | ||
1786 | #endif | |
1787 | ||
1788 | /* Fill in the counts in the first entry in a .stabs section. */ | |
1789 | ||
1790 | static void | |
dbe2df79 | 1791 | adjust_stab_sections (bfd *abfd, asection *sec, void *xxx ATTRIBUTE_UNUSED) |
252b5132 RH |
1792 | { |
1793 | char *name; | |
1794 | asection *strsec; | |
1795 | char *p; | |
1796 | int strsz, nsyms; | |
1797 | ||
1798 | if (strncmp (".stab", sec->name, 5)) | |
1799 | return; | |
1800 | if (!strcmp ("str", sec->name + strlen (sec->name) - 3)) | |
1801 | return; | |
1802 | ||
dbe2df79 | 1803 | name = alloca (strlen (sec->name) + 4); |
252b5132 RH |
1804 | strcpy (name, sec->name); |
1805 | strcat (name, "str"); | |
1806 | strsec = bfd_get_section_by_name (abfd, name); | |
1807 | if (strsec) | |
1808 | strsz = bfd_section_size (abfd, strsec); | |
1809 | else | |
1810 | strsz = 0; | |
1811 | nsyms = bfd_section_size (abfd, sec) / 12 - 1; | |
1812 | ||
1813 | p = seg_info (sec)->stabu.p; | |
9c2799c2 | 1814 | gas_assert (p != 0); |
252b5132 | 1815 | |
dbe2df79 AM |
1816 | bfd_h_put_16 (abfd, nsyms, p + 6); |
1817 | bfd_h_put_32 (abfd, strsz, p + 8); | |
252b5132 RH |
1818 | } |
1819 | ||
1820 | #ifdef NEED_ECOFF_DEBUG | |
1821 | ||
1822 | /* This function is called by the ECOFF code. It is supposed to | |
1823 | record the external symbol information so that the backend can | |
1824 | write it out correctly. The ELF backend doesn't actually handle | |
1825 | this at the moment, so we do it ourselves. We save the information | |
1826 | in the symbol. */ | |
1827 | ||
ae4a729b AM |
1828 | #ifdef OBJ_MAYBE_ELF |
1829 | static | |
1830 | #endif | |
252b5132 | 1831 | void |
dbe2df79 | 1832 | elf_ecoff_set_ext (symbolS *sym, struct ecoff_extr *ext) |
252b5132 | 1833 | { |
dbe2df79 | 1834 | symbol_get_bfdsym (sym)->udata.p = ext; |
252b5132 RH |
1835 | } |
1836 | ||
1837 | /* This function is called by bfd_ecoff_debug_externals. It is | |
1838 | supposed to *EXT to the external symbol information, and return | |
1839 | whether the symbol should be used at all. */ | |
1840 | ||
b34976b6 | 1841 | static bfd_boolean |
dbe2df79 | 1842 | elf_get_extr (asymbol *sym, EXTR *ext) |
252b5132 RH |
1843 | { |
1844 | if (sym->udata.p == NULL) | |
b34976b6 | 1845 | return FALSE; |
252b5132 | 1846 | *ext = *(EXTR *) sym->udata.p; |
b34976b6 | 1847 | return TRUE; |
252b5132 RH |
1848 | } |
1849 | ||
1850 | /* This function is called by bfd_ecoff_debug_externals. It has | |
1851 | nothing to do for ELF. */ | |
1852 | ||
252b5132 | 1853 | static void |
dbe2df79 AM |
1854 | elf_set_index (asymbol *sym ATTRIBUTE_UNUSED, |
1855 | bfd_size_type indx ATTRIBUTE_UNUSED) | |
252b5132 RH |
1856 | { |
1857 | } | |
1858 | ||
1859 | #endif /* NEED_ECOFF_DEBUG */ | |
1860 | ||
1861 | void | |
dbe2df79 | 1862 | elf_frob_symbol (symbolS *symp, int *puntp) |
252b5132 | 1863 | { |
49309057 ILT |
1864 | struct elf_obj_sy *sy_obj; |
1865 | ||
252b5132 RH |
1866 | #ifdef NEED_ECOFF_DEBUG |
1867 | if (ECOFF_DEBUGGING) | |
1868 | ecoff_frob_symbol (symp); | |
1869 | #endif | |
1870 | ||
49309057 ILT |
1871 | sy_obj = symbol_get_obj (symp); |
1872 | ||
1873 | if (sy_obj->size != NULL) | |
252b5132 | 1874 | { |
49309057 | 1875 | switch (sy_obj->size->X_op) |
252b5132 RH |
1876 | { |
1877 | case O_subtract: | |
1878 | S_SET_SIZE (symp, | |
49309057 ILT |
1879 | (S_GET_VALUE (sy_obj->size->X_add_symbol) |
1880 | + sy_obj->size->X_add_number | |
1881 | - S_GET_VALUE (sy_obj->size->X_op_symbol))); | |
252b5132 RH |
1882 | break; |
1883 | case O_constant: | |
1884 | S_SET_SIZE (symp, | |
49309057 ILT |
1885 | (S_GET_VALUE (sy_obj->size->X_add_symbol) |
1886 | + sy_obj->size->X_add_number)); | |
252b5132 RH |
1887 | break; |
1888 | default: | |
1889 | as_bad (_(".size expression too complicated to fix up")); | |
1890 | break; | |
1891 | } | |
49309057 ILT |
1892 | free (sy_obj->size); |
1893 | sy_obj->size = NULL; | |
252b5132 RH |
1894 | } |
1895 | ||
49309057 | 1896 | if (sy_obj->versioned_name != NULL) |
252b5132 | 1897 | { |
79082ff0 L |
1898 | char *p; |
1899 | ||
1900 | p = strchr (sy_obj->versioned_name, ELF_VER_CHR); | |
1901 | know (p != NULL); | |
1902 | ||
252b5132 RH |
1903 | /* This symbol was given a new name with the .symver directive. |
1904 | ||
13c56984 AM |
1905 | If this is an external reference, just rename the symbol to |
1906 | include the version string. This will make the relocs be | |
1907 | against the correct versioned symbol. | |
252b5132 RH |
1908 | |
1909 | If this is a definition, add an alias. FIXME: Using an alias | |
1910 | will permit the debugging information to refer to the right | |
1911 | symbol. However, it's not clear whether it is the best | |
1912 | approach. */ | |
1913 | ||
1914 | if (! S_IS_DEFINED (symp)) | |
1915 | { | |
252b5132 | 1916 | /* Verify that the name isn't using the @@ syntax--this is |
13c56984 AM |
1917 | reserved for definitions of the default version to link |
1918 | against. */ | |
252b5132 RH |
1919 | if (p[1] == ELF_VER_CHR) |
1920 | { | |
1921 | as_bad (_("invalid attempt to declare external version name as default in symbol `%s'"), | |
49309057 | 1922 | sy_obj->versioned_name); |
b34976b6 | 1923 | *puntp = TRUE; |
252b5132 | 1924 | } |
49309057 | 1925 | S_SET_NAME (symp, sy_obj->versioned_name); |
252b5132 RH |
1926 | } |
1927 | else | |
1928 | { | |
dbe2df79 | 1929 | if (p[1] == ELF_VER_CHR && p[2] == ELF_VER_CHR) |
79082ff0 L |
1930 | { |
1931 | size_t l; | |
1932 | ||
1933 | /* The @@@ syntax is a special case. It renames the | |
1934 | symbol name to versioned_name with one `@' removed. */ | |
1935 | l = strlen (&p[3]) + 1; | |
dbe2df79 | 1936 | memmove (&p[2], &p[3], l); |
79082ff0 L |
1937 | S_SET_NAME (symp, sy_obj->versioned_name); |
1938 | } | |
1939 | else | |
1940 | { | |
1941 | symbolS *symp2; | |
252b5132 | 1942 | |
79082ff0 L |
1943 | /* FIXME: Creating a new symbol here is risky. We're |
1944 | in the final loop over the symbol table. We can | |
1945 | get away with it only because the symbol goes to | |
1946 | the end of the list, where the loop will still see | |
1947 | it. It would probably be better to do this in | |
1948 | obj_frob_file_before_adjust. */ | |
252b5132 | 1949 | |
79082ff0 | 1950 | symp2 = symbol_find_or_make (sy_obj->versioned_name); |
252b5132 | 1951 | |
79082ff0 | 1952 | /* Now we act as though we saw symp2 = sym. */ |
252b5132 | 1953 | |
79082ff0 | 1954 | S_SET_SEGMENT (symp2, S_GET_SEGMENT (symp)); |
252b5132 | 1955 | |
79082ff0 L |
1956 | /* Subtracting out the frag address here is a hack |
1957 | because we are in the middle of the final loop. */ | |
1958 | S_SET_VALUE (symp2, | |
1959 | (S_GET_VALUE (symp) | |
1960 | - symbol_get_frag (symp)->fr_address)); | |
252b5132 | 1961 | |
79082ff0 | 1962 | symbol_set_frag (symp2, symbol_get_frag (symp)); |
252b5132 | 1963 | |
79082ff0 L |
1964 | /* This will copy over the size information. */ |
1965 | copy_symbol_attributes (symp2, symp); | |
252b5132 | 1966 | |
26eb4093 JJ |
1967 | S_SET_OTHER (symp2, S_GET_OTHER (symp)); |
1968 | ||
79082ff0 L |
1969 | if (S_IS_WEAK (symp)) |
1970 | S_SET_WEAK (symp2); | |
252b5132 | 1971 | |
79082ff0 L |
1972 | if (S_IS_EXTERNAL (symp)) |
1973 | S_SET_EXTERNAL (symp2); | |
1974 | } | |
252b5132 RH |
1975 | } |
1976 | } | |
1977 | ||
1978 | /* Double check weak symbols. */ | |
49309057 | 1979 | if (S_IS_WEAK (symp)) |
252b5132 RH |
1980 | { |
1981 | if (S_IS_COMMON (symp)) | |
6ce8b369 | 1982 | as_bad (_("symbol `%s' can not be both weak and common"), |
252b5132 RH |
1983 | S_GET_NAME (symp)); |
1984 | } | |
1985 | ||
1986 | #ifdef TC_MIPS | |
1987 | /* The Irix 5 and 6 assemblers set the type of any common symbol and | |
1988 | any undefined non-function symbol to STT_OBJECT. We try to be | |
1989 | compatible, since newer Irix 5 and 6 linkers care. However, we | |
1990 | only set undefined symbols to be STT_OBJECT if we are on Irix, | |
1991 | because that is the only time gcc will generate the necessary | |
1992 | .global directives to mark functions. */ | |
1993 | ||
1994 | if (S_IS_COMMON (symp)) | |
49309057 | 1995 | symbol_get_bfdsym (symp)->flags |= BSF_OBJECT; |
252b5132 RH |
1996 | |
1997 | if (strstr (TARGET_OS, "irix") != NULL | |
49309057 ILT |
1998 | && ! S_IS_DEFINED (symp) |
1999 | && (symbol_get_bfdsym (symp)->flags & BSF_FUNCTION) == 0) | |
2000 | symbol_get_bfdsym (symp)->flags |= BSF_OBJECT; | |
252b5132 | 2001 | #endif |
252b5132 RH |
2002 | } |
2003 | ||
060adf0e AM |
2004 | struct group_list |
2005 | { | |
2006 | asection **head; /* Section lists. */ | |
2007 | unsigned int *elt_count; /* Number of sections in each list. */ | |
2008 | unsigned int num_group; /* Number of lists. */ | |
2009 | }; | |
2010 | ||
2011 | /* Called via bfd_map_over_sections. If SEC is a member of a group, | |
2012 | add it to a list of sections belonging to the group. INF is a | |
2013 | pointer to a struct group_list, which is where we store the head of | |
2014 | each list. */ | |
2015 | ||
2016 | static void | |
dbe2df79 | 2017 | build_group_lists (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *inf) |
060adf0e | 2018 | { |
dbe2df79 | 2019 | struct group_list *list = inf; |
aa1f4858 | 2020 | const char *group_name = elf_group_name (sec); |
060adf0e AM |
2021 | unsigned int i; |
2022 | ||
2023 | if (group_name == NULL) | |
2024 | return; | |
2025 | ||
2026 | /* If this group already has a list, add the section to the head of | |
2027 | the list. */ | |
2028 | for (i = 0; i < list->num_group; i++) | |
2029 | { | |
aa1f4858 | 2030 | if (strcmp (group_name, elf_group_name (list->head[i])) == 0) |
060adf0e | 2031 | { |
aa1f4858 | 2032 | elf_next_in_group (sec) = list->head[i]; |
060adf0e AM |
2033 | list->head[i] = sec; |
2034 | list->elt_count[i] += 1; | |
2035 | return; | |
2036 | } | |
2037 | } | |
2038 | ||
2039 | /* New group. Make the arrays bigger in chunks to minimize calls to | |
2040 | realloc. */ | |
2041 | i = list->num_group; | |
2042 | if ((i & 127) == 0) | |
2043 | { | |
2044 | unsigned int newsize = i + 128; | |
2045 | list->head = xrealloc (list->head, newsize * sizeof (*list->head)); | |
2046 | list->elt_count = xrealloc (list->elt_count, | |
2047 | newsize * sizeof (*list->elt_count)); | |
2048 | } | |
2049 | list->head[i] = sec; | |
2050 | list->elt_count[i] = 1; | |
2051 | list->num_group += 1; | |
2052 | } | |
2053 | ||
252b5132 | 2054 | void |
dbe2df79 | 2055 | elf_frob_file (void) |
252b5132 | 2056 | { |
060adf0e AM |
2057 | struct group_list list; |
2058 | unsigned int i; | |
2059 | ||
dbe2df79 | 2060 | bfd_map_over_sections (stdoutput, adjust_stab_sections, NULL); |
252b5132 | 2061 | |
060adf0e AM |
2062 | /* Go find section groups. */ |
2063 | list.num_group = 0; | |
2064 | list.head = NULL; | |
2065 | list.elt_count = NULL; | |
dbe2df79 | 2066 | bfd_map_over_sections (stdoutput, build_group_lists, &list); |
060adf0e AM |
2067 | |
2068 | /* Make the SHT_GROUP sections that describe each section group. We | |
2069 | can't set up the section contents here yet, because elf section | |
2070 | indices have yet to be calculated. elf.c:set_group_contents does | |
2071 | the rest of the work. */ | |
2072 | for (i = 0; i < list.num_group; i++) | |
2073 | { | |
aa1f4858 | 2074 | const char *group_name = elf_group_name (list.head[i]); |
9758f3fc | 2075 | const char *sec_name; |
060adf0e AM |
2076 | asection *s; |
2077 | flagword flags; | |
9758f3fc AM |
2078 | struct symbol *sy; |
2079 | int has_sym; | |
587aac4e | 2080 | bfd_size_type size; |
060adf0e | 2081 | |
060adf0e | 2082 | flags = SEC_READONLY | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_GROUP; |
d2dab548 | 2083 | for (s = list.head[i]; s != NULL; s = elf_next_in_group (s)) |
68bfbfcc | 2084 | if ((s->flags ^ flags) & SEC_LINK_ONCE) |
d2dab548 AM |
2085 | { |
2086 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
2087 | if (s != list.head[i]) | |
2088 | { | |
2089 | as_warn (_("assuming all members of group `%s' are COMDAT"), | |
2090 | group_name); | |
2091 | break; | |
2092 | } | |
2093 | } | |
2094 | ||
9758f3fc AM |
2095 | sec_name = group_name; |
2096 | sy = symbol_find_exact (group_name); | |
2097 | has_sym = 0; | |
2098 | if (sy != NULL | |
2099 | && (sy == symbol_lastP | |
2100 | || (sy->sy_next != NULL | |
2101 | && sy->sy_next->sy_previous == sy))) | |
2102 | { | |
2103 | has_sym = 1; | |
2104 | sec_name = ".group"; | |
2105 | } | |
2106 | s = subseg_force_new (sec_name, 0); | |
060adf0e AM |
2107 | if (s == NULL |
2108 | || !bfd_set_section_flags (stdoutput, s, flags) | |
2109 | || !bfd_set_section_alignment (stdoutput, s, 2)) | |
2110 | { | |
2111 | as_fatal (_("can't create group: %s"), | |
2112 | bfd_errmsg (bfd_get_error ())); | |
2113 | } | |
2f89ff8d | 2114 | elf_section_type (s) = SHT_GROUP; |
060adf0e | 2115 | |
aa1f4858 AM |
2116 | /* Pass a pointer to the first section in this group. */ |
2117 | elf_next_in_group (s) = list.head[i]; | |
9758f3fc AM |
2118 | if (has_sym) |
2119 | elf_group_id (s) = sy->bsym; | |
060adf0e | 2120 | |
587aac4e AM |
2121 | size = 4 * (list.elt_count[i] + 1); |
2122 | bfd_set_section_size (stdoutput, s, size); | |
b7712f8d | 2123 | s->contents = (unsigned char *) frag_more (size); |
060adf0e | 2124 | frag_now->fr_fix = frag_now_fix_octets (); |
07cb2078 | 2125 | frag_wane (frag_now); |
060adf0e AM |
2126 | } |
2127 | ||
252b5132 RH |
2128 | #ifdef elf_tc_final_processing |
2129 | elf_tc_final_processing (); | |
2130 | #endif | |
2131 | } | |
2132 | ||
4a1805b1 | 2133 | /* It removes any unneeded versioned symbols from the symbol table. */ |
339681c0 L |
2134 | |
2135 | void | |
dbe2df79 | 2136 | elf_frob_file_before_adjust (void) |
339681c0 L |
2137 | { |
2138 | if (symbol_rootP) | |
2139 | { | |
2140 | symbolS *symp; | |
2141 | ||
2142 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) | |
00e6e13d | 2143 | if (!S_IS_DEFINED (symp)) |
79082ff0 | 2144 | { |
00e6e13d | 2145 | if (symbol_get_obj (symp)->versioned_name) |
79082ff0 L |
2146 | { |
2147 | char *p; | |
2148 | ||
2149 | /* The @@@ syntax is a special case. If the symbol is | |
2150 | not defined, 2 `@'s will be removed from the | |
2151 | versioned_name. */ | |
2152 | ||
2153 | p = strchr (symbol_get_obj (symp)->versioned_name, | |
2154 | ELF_VER_CHR); | |
2155 | know (p != NULL); | |
dbe2df79 | 2156 | if (p[1] == ELF_VER_CHR && p[2] == ELF_VER_CHR) |
79082ff0 L |
2157 | { |
2158 | size_t l = strlen (&p[3]) + 1; | |
dbe2df79 | 2159 | memmove (&p[1], &p[3], l); |
79082ff0 L |
2160 | } |
2161 | if (symbol_used_p (symp) == 0 | |
2162 | && symbol_used_in_reloc_p (symp) == 0) | |
2163 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
2164 | } | |
00e6e13d JJ |
2165 | |
2166 | /* If there was .weak foo, but foo was neither defined nor | |
2167 | used anywhere, remove it. */ | |
2168 | ||
2169 | else if (S_IS_WEAK (symp) | |
2170 | && symbol_used_p (symp) == 0 | |
2171 | && symbol_used_in_reloc_p (symp) == 0) | |
2172 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
79082ff0 | 2173 | } |
339681c0 L |
2174 | } |
2175 | } | |
2176 | ||
252b5132 RH |
2177 | /* It is required that we let write_relocs have the opportunity to |
2178 | optimize away fixups before output has begun, since it is possible | |
2179 | to eliminate all fixups for a section and thus we never should | |
2180 | have generated the relocation section. */ | |
2181 | ||
2182 | void | |
dbe2df79 | 2183 | elf_frob_file_after_relocs (void) |
252b5132 RH |
2184 | { |
2185 | #ifdef NEED_ECOFF_DEBUG | |
2186 | if (ECOFF_DEBUGGING) | |
2187 | /* Generate the ECOFF debugging information. */ | |
2188 | { | |
2189 | const struct ecoff_debug_swap *debug_swap; | |
2190 | struct ecoff_debug_info debug; | |
2191 | char *buf; | |
2192 | asection *sec; | |
2193 | ||
2194 | debug_swap | |
2195 | = get_elf_backend_data (stdoutput)->elf_backend_ecoff_debug_swap; | |
dbe2df79 | 2196 | know (debug_swap != NULL); |
252b5132 RH |
2197 | ecoff_build_debug (&debug.symbolic_header, &buf, debug_swap); |
2198 | ||
2199 | /* Set up the pointers in debug. */ | |
2200 | #define SET(ptr, offset, type) \ | |
2201 | debug.ptr = (type) (buf + debug.symbolic_header.offset) | |
2202 | ||
2203 | SET (line, cbLineOffset, unsigned char *); | |
dbe2df79 AM |
2204 | SET (external_dnr, cbDnOffset, void *); |
2205 | SET (external_pdr, cbPdOffset, void *); | |
2206 | SET (external_sym, cbSymOffset, void *); | |
2207 | SET (external_opt, cbOptOffset, void *); | |
252b5132 RH |
2208 | SET (external_aux, cbAuxOffset, union aux_ext *); |
2209 | SET (ss, cbSsOffset, char *); | |
dbe2df79 AM |
2210 | SET (external_fdr, cbFdOffset, void *); |
2211 | SET (external_rfd, cbRfdOffset, void *); | |
252b5132 RH |
2212 | /* ssext and external_ext are set up just below. */ |
2213 | ||
2214 | #undef SET | |
2215 | ||
2216 | /* Set up the external symbols. */ | |
2217 | debug.ssext = debug.ssext_end = NULL; | |
2218 | debug.external_ext = debug.external_ext_end = NULL; | |
b34976b6 | 2219 | if (! bfd_ecoff_debug_externals (stdoutput, &debug, debug_swap, TRUE, |
252b5132 | 2220 | elf_get_extr, elf_set_index)) |
6ce8b369 | 2221 | as_fatal (_("failed to set up debugging information: %s"), |
252b5132 RH |
2222 | bfd_errmsg (bfd_get_error ())); |
2223 | ||
2224 | sec = bfd_get_section_by_name (stdoutput, ".mdebug"); | |
9c2799c2 | 2225 | gas_assert (sec != NULL); |
252b5132 | 2226 | |
b34976b6 | 2227 | know (!stdoutput->output_has_begun); |
252b5132 RH |
2228 | |
2229 | /* We set the size of the section, call bfd_set_section_contents | |
2230 | to force the ELF backend to allocate a file position, and then | |
2231 | write out the data. FIXME: Is this really the best way to do | |
2232 | this? */ | |
587aac4e AM |
2233 | bfd_set_section_size |
2234 | (stdoutput, sec, bfd_ecoff_debug_size (stdoutput, &debug, debug_swap)); | |
252b5132 | 2235 | |
5f91fe03 | 2236 | /* Pass BUF to bfd_set_section_contents because this will |
13c56984 AM |
2237 | eventually become a call to fwrite, and ISO C prohibits |
2238 | passing a NULL pointer to a stdio function even if the | |
2239 | pointer will not be used. */ | |
dbe2df79 | 2240 | if (! bfd_set_section_contents (stdoutput, sec, buf, 0, 0)) |
6ce8b369 | 2241 | as_fatal (_("can't start writing .mdebug section: %s"), |
252b5132 RH |
2242 | bfd_errmsg (bfd_get_error ())); |
2243 | ||
b34976b6 | 2244 | know (stdoutput->output_has_begun); |
252b5132 RH |
2245 | know (sec->filepos != 0); |
2246 | ||
2247 | if (! bfd_ecoff_write_debug (stdoutput, &debug, debug_swap, | |
2248 | sec->filepos)) | |
6ce8b369 | 2249 | as_fatal (_("could not write .mdebug section: %s"), |
252b5132 RH |
2250 | bfd_errmsg (bfd_get_error ())); |
2251 | } | |
2252 | #endif /* NEED_ECOFF_DEBUG */ | |
2253 | } | |
2254 | ||
2255 | #ifdef SCO_ELF | |
2256 | ||
aaa2624b | 2257 | /* Heavily plagiarized from obj_elf_version. The idea is to emit the |
252b5132 RH |
2258 | SCO specific identifier in the .notes section to satisfy the SCO |
2259 | linker. | |
2260 | ||
2261 | This looks more complicated than it really is. As opposed to the | |
2262 | "obvious" solution, this should handle the cross dev cases | |
2263 | correctly. (i.e, hosting on a 64 bit big endian processor, but | |
2264 | generating SCO Elf code) Efficiency isn't a concern, as there | |
2265 | should be exactly one of these sections per object module. | |
2266 | ||
2267 | SCO OpenServer 5 identifies it's ELF modules with a standard ELF | |
2268 | .note section. | |
2269 | ||
fa306131 AM |
2270 | int_32 namesz = 4 ; Name size |
2271 | int_32 descsz = 12 ; Descriptive information | |
2272 | int_32 type = 1 ; | |
2273 | char name[4] = "SCO" ; Originator name ALWAYS SCO + NULL | |
252b5132 RH |
2274 | int_32 version = (major ver # << 16) | version of tools ; |
2275 | int_32 source = (tool_id << 16 ) | 1 ; | |
2276 | int_32 info = 0 ; These are set by the SCO tools, but we | |
13c56984 | 2277 | don't know enough about the source |
252b5132 RH |
2278 | environment to set them. SCO ld currently |
2279 | ignores them, and recommends we set them | |
2280 | to zero. */ | |
2281 | ||
2282 | #define SCO_MAJOR_VERSION 0x1 | |
2283 | #define SCO_MINOR_VERSION 0x1 | |
2284 | ||
2285 | void | |
dbe2df79 | 2286 | sco_id (void) |
252b5132 RH |
2287 | { |
2288 | ||
2289 | char *name; | |
2290 | unsigned int c; | |
2291 | char ch; | |
2292 | char *p; | |
2293 | asection *seg = now_seg; | |
2294 | subsegT subseg = now_subseg; | |
2295 | Elf_Internal_Note i_note; | |
2296 | Elf_External_Note e_note; | |
dbe2df79 | 2297 | asection *note_secp = NULL; |
252b5132 RH |
2298 | int i, len; |
2299 | ||
2300 | /* create the .note section */ | |
2301 | ||
2302 | note_secp = subseg_new (".note", 0); | |
2303 | bfd_set_section_flags (stdoutput, | |
2304 | note_secp, | |
2305 | SEC_HAS_CONTENTS | SEC_READONLY); | |
2306 | ||
2307 | /* process the version string */ | |
2308 | ||
fa306131 | 2309 | i_note.namesz = 4; |
252b5132 RH |
2310 | i_note.descsz = 12; /* 12 descriptive bytes */ |
2311 | i_note.type = NT_VERSION; /* Contains a version string */ | |
2312 | ||
2313 | p = frag_more (sizeof (i_note.namesz)); | |
dbe2df79 | 2314 | md_number_to_chars (p, i_note.namesz, 4); |
252b5132 RH |
2315 | |
2316 | p = frag_more (sizeof (i_note.descsz)); | |
dbe2df79 | 2317 | md_number_to_chars (p, i_note.descsz, 4); |
252b5132 RH |
2318 | |
2319 | p = frag_more (sizeof (i_note.type)); | |
dbe2df79 | 2320 | md_number_to_chars (p, i_note.type, 4); |
252b5132 RH |
2321 | |
2322 | p = frag_more (4); | |
fa306131 | 2323 | strcpy (p, "SCO"); |
252b5132 RH |
2324 | |
2325 | /* Note: this is the version number of the ELF we're representing */ | |
2326 | p = frag_more (4); | |
2327 | md_number_to_chars (p, (SCO_MAJOR_VERSION << 16) | (SCO_MINOR_VERSION), 4); | |
2328 | ||
2329 | /* Here, we pick a magic number for ourselves (yes, I "registered" | |
2330 | it with SCO. The bottom bit shows that we are compat with the | |
2331 | SCO ABI. */ | |
2332 | p = frag_more (4); | |
2333 | md_number_to_chars (p, 0x4c520000 | 0x0001, 4); | |
2334 | ||
2335 | /* If we knew (or cared) what the source language options were, we'd | |
2336 | fill them in here. SCO has given us permission to ignore these | |
2337 | and just set them to zero. */ | |
2338 | p = frag_more (4); | |
2339 | md_number_to_chars (p, 0x0000, 4); | |
fa306131 | 2340 | |
252b5132 RH |
2341 | frag_align (2, 0, 0); |
2342 | ||
2343 | /* We probably can't restore the current segment, for there likely | |
2344 | isn't one yet... */ | |
2345 | if (seg && subseg) | |
2346 | subseg_set (seg, subseg); | |
2347 | ||
2348 | } | |
2349 | ||
2350 | #endif /* SCO_ELF */ | |
2351 | ||
5110c57e | 2352 | static int |
dbe2df79 | 2353 | elf_separate_stab_sections (void) |
5110c57e HPN |
2354 | { |
2355 | #ifdef NEED_ECOFF_DEBUG | |
2356 | return (!ECOFF_DEBUGGING); | |
2357 | #else | |
2358 | return 1; | |
2359 | #endif | |
2360 | } | |
2361 | ||
2362 | static void | |
dbe2df79 | 2363 | elf_init_stab_section (segT seg) |
5110c57e HPN |
2364 | { |
2365 | #ifdef NEED_ECOFF_DEBUG | |
2366 | if (!ECOFF_DEBUGGING) | |
2367 | #endif | |
2368 | obj_elf_init_stab_section (seg); | |
2369 | } | |
2370 | ||
252b5132 RH |
2371 | const struct format_ops elf_format_ops = |
2372 | { | |
2373 | bfd_target_elf_flavour, | |
4c63da97 AM |
2374 | 0, /* dfl_leading_underscore */ |
2375 | 1, /* emit_section_symbols */ | |
5110c57e HPN |
2376 | elf_begin, |
2377 | elf_file_symbol, | |
252b5132 RH |
2378 | elf_frob_symbol, |
2379 | elf_frob_file, | |
339681c0 | 2380 | elf_frob_file_before_adjust, |
a161fe53 | 2381 | 0, /* obj_frob_file_before_fix */ |
252b5132 RH |
2382 | elf_frob_file_after_relocs, |
2383 | elf_s_get_size, elf_s_set_size, | |
2384 | elf_s_get_align, elf_s_set_align, | |
4c63da97 | 2385 | elf_s_get_other, |
5110c57e | 2386 | elf_s_set_other, |
4c63da97 | 2387 | 0, /* s_get_desc */ |
5110c57e HPN |
2388 | 0, /* s_set_desc */ |
2389 | 0, /* s_get_type */ | |
2390 | 0, /* s_set_type */ | |
252b5132 RH |
2391 | elf_copy_symbol_attributes, |
2392 | #ifdef NEED_ECOFF_DEBUG | |
2393 | ecoff_generate_asm_lineno, | |
2394 | ecoff_stab, | |
2395 | #else | |
4c63da97 AM |
2396 | 0, /* generate_asm_lineno */ |
2397 | 0, /* process_stab */ | |
252b5132 | 2398 | #endif |
5110c57e HPN |
2399 | elf_separate_stab_sections, |
2400 | elf_init_stab_section, | |
252b5132 RH |
2401 | elf_sec_sym_ok_for_reloc, |
2402 | elf_pop_insert, | |
2403 | #ifdef NEED_ECOFF_DEBUG | |
2404 | elf_ecoff_set_ext, | |
2405 | #else | |
4c63da97 | 2406 | 0, /* ecoff_set_ext */ |
252b5132 | 2407 | #endif |
4c63da97 | 2408 | elf_obj_read_begin_hook, |
5110c57e | 2409 | elf_obj_symbol_new_hook |
252b5132 | 2410 | }; |