Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* ELF object file format |
cc8a6dd0 | 2 | Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
01e1a5bc | 3 | 2001, 2002, 2003, 2004, 2005, 2006, 2007, 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; | |
252b5132 | 263 | |
c04f5787 AM |
264 | sym = symbol_new (s, absolute_section, 0, NULL); |
265 | symbol_set_frag (sym, &zero_address_frag); | |
266 | symbol_get_bfdsym (sym)->flags |= BSF_FILE; | |
252b5132 | 267 | |
c04f5787 AM |
268 | if (symbol_rootP != sym) |
269 | { | |
270 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); | |
271 | symbol_insert (sym, symbol_rootP, &symbol_rootP, &symbol_lastP); | |
252b5132 | 272 | #ifdef DEBUG |
c04f5787 | 273 | verify_symbol_chain (symbol_rootP, symbol_lastP); |
252b5132 | 274 | #endif |
c04f5787 | 275 | } |
252b5132 RH |
276 | } |
277 | ||
278 | #ifdef NEED_ECOFF_DEBUG | |
f17c130b | 279 | ecoff_new_file (s, appfile); |
252b5132 RH |
280 | #endif |
281 | } | |
282 | ||
e13bab5a AM |
283 | /* Called from read.c:s_comm after we've parsed .comm symbol, size. |
284 | Parse a possible alignment value. */ | |
285 | ||
3b22753a | 286 | symbolS * |
e13bab5a | 287 | elf_common_parse (int ignore ATTRIBUTE_UNUSED, symbolS *symbolP, addressT size) |
252b5132 | 288 | { |
e13bab5a AM |
289 | addressT align = 0; |
290 | int is_local = symbol_get_obj (symbolP)->local; | |
252b5132 | 291 | |
e13bab5a | 292 | if (*input_line_pointer == ',') |
9be1cda6 | 293 | { |
e13bab5a | 294 | char *save = input_line_pointer; |
9be1cda6 | 295 | |
252b5132 RH |
296 | input_line_pointer++; |
297 | SKIP_WHITESPACE (); | |
e13bab5a AM |
298 | |
299 | if (*input_line_pointer == '"') | |
252b5132 | 300 | { |
e13bab5a AM |
301 | /* For sparc. Accept .common symbol, length, "bss" */ |
302 | input_line_pointer++; | |
303 | /* Some use the dot, some don't. */ | |
304 | if (*input_line_pointer == '.') | |
305 | input_line_pointer++; | |
306 | /* Some say data, some say bss. */ | |
307 | if (strncmp (input_line_pointer, "bss\"", 4) == 0) | |
308 | input_line_pointer += 4; | |
309 | else if (strncmp (input_line_pointer, "data\"", 5) == 0) | |
310 | input_line_pointer += 5; | |
311 | else | |
252b5132 | 312 | { |
e13bab5a AM |
313 | char *p = input_line_pointer; |
314 | char c; | |
315 | ||
316 | while (*--p != '"') | |
317 | ; | |
318 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
319 | if (*input_line_pointer++ == '"') | |
320 | break; | |
321 | c = *input_line_pointer; | |
322 | *input_line_pointer = '\0'; | |
323 | as_bad (_("bad .common segment %s"), p); | |
324 | *input_line_pointer = c; | |
325 | ignore_rest_of_line (); | |
326 | return NULL; | |
252b5132 | 327 | } |
e13bab5a AM |
328 | /* ??? Don't ask me why these are always global. */ |
329 | is_local = 0; | |
252b5132 RH |
330 | } |
331 | else | |
332 | { | |
e13bab5a AM |
333 | input_line_pointer = save; |
334 | align = parse_align (is_local); | |
335 | if (align == (addressT) -1) | |
336 | return NULL; | |
252b5132 RH |
337 | } |
338 | } | |
e13bab5a AM |
339 | |
340 | if (is_local) | |
341 | { | |
342 | bss_alloc (symbolP, size, align); | |
343 | S_CLEAR_EXTERNAL (symbolP); | |
344 | } | |
252b5132 RH |
345 | else |
346 | { | |
e13bab5a AM |
347 | S_SET_VALUE (symbolP, size); |
348 | S_SET_ALIGN (symbolP, align); | |
349 | S_SET_EXTERNAL (symbolP); | |
3b22753a | 350 | S_SET_SEGMENT (symbolP, elf_com_section_ptr); |
252b5132 RH |
351 | } |
352 | ||
49309057 | 353 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; |
252b5132 | 354 | |
13ae64f3 | 355 | return symbolP; |
252b5132 RH |
356 | } |
357 | ||
13ae64f3 | 358 | void |
dbe2df79 | 359 | obj_elf_common (int is_common) |
13ae64f3 | 360 | { |
e13bab5a AM |
361 | if (flag_mri && is_common) |
362 | s_mri_common (0); | |
363 | else | |
364 | s_comm_internal (0, elf_common_parse); | |
13ae64f3 JJ |
365 | } |
366 | ||
367 | static void | |
dbe2df79 | 368 | obj_elf_tls_common (int ignore ATTRIBUTE_UNUSED) |
13ae64f3 | 369 | { |
e13bab5a | 370 | symbolS *symbolP = s_comm_internal (0, elf_common_parse); |
13ae64f3 JJ |
371 | |
372 | if (symbolP) | |
373 | symbol_get_bfdsym (symbolP)->flags |= BSF_THREAD_LOCAL; | |
374 | } | |
375 | ||
13c56984 AM |
376 | static void |
377 | obj_elf_lcomm (int ignore ATTRIBUTE_UNUSED) | |
378 | { | |
379 | symbolS *symbolP = s_comm_internal (0, s_lcomm_internal); | |
380 | ||
381 | if (symbolP) | |
382 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; | |
383 | } | |
384 | ||
252b5132 | 385 | static void |
dbe2df79 | 386 | obj_elf_local (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
387 | { |
388 | char *name; | |
389 | int c; | |
390 | symbolS *symbolP; | |
391 | ||
392 | do | |
393 | { | |
394 | name = input_line_pointer; | |
395 | c = get_symbol_end (); | |
396 | symbolP = symbol_find_or_make (name); | |
397 | *input_line_pointer = c; | |
398 | SKIP_WHITESPACE (); | |
399 | S_CLEAR_EXTERNAL (symbolP); | |
49309057 | 400 | symbol_get_obj (symbolP)->local = 1; |
252b5132 RH |
401 | if (c == ',') |
402 | { | |
403 | input_line_pointer++; | |
404 | SKIP_WHITESPACE (); | |
405 | if (*input_line_pointer == '\n') | |
406 | c = '\n'; | |
407 | } | |
408 | } | |
409 | while (c == ','); | |
410 | demand_empty_rest_of_line (); | |
411 | } | |
412 | ||
413 | static void | |
dbe2df79 | 414 | obj_elf_weak (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
415 | { |
416 | char *name; | |
417 | int c; | |
418 | symbolS *symbolP; | |
419 | ||
420 | do | |
421 | { | |
422 | name = input_line_pointer; | |
423 | c = get_symbol_end (); | |
424 | symbolP = symbol_find_or_make (name); | |
425 | *input_line_pointer = c; | |
426 | SKIP_WHITESPACE (); | |
427 | S_SET_WEAK (symbolP); | |
49309057 | 428 | symbol_get_obj (symbolP)->local = 1; |
252b5132 RH |
429 | if (c == ',') |
430 | { | |
431 | input_line_pointer++; | |
432 | SKIP_WHITESPACE (); | |
433 | if (*input_line_pointer == '\n') | |
434 | c = '\n'; | |
435 | } | |
436 | } | |
437 | while (c == ','); | |
438 | demand_empty_rest_of_line (); | |
439 | } | |
440 | ||
2e13b764 | 441 | static void |
dbe2df79 | 442 | obj_elf_visibility (int visibility) |
2e13b764 NC |
443 | { |
444 | char *name; | |
445 | int c; | |
446 | symbolS *symbolP; | |
447 | asymbol *bfdsym; | |
448 | elf_symbol_type *elfsym; | |
449 | ||
450 | do | |
451 | { | |
452 | name = input_line_pointer; | |
453 | c = get_symbol_end (); | |
454 | symbolP = symbol_find_or_make (name); | |
455 | *input_line_pointer = c; | |
fa306131 | 456 | |
2e13b764 | 457 | SKIP_WHITESPACE (); |
fa306131 | 458 | |
2e13b764 NC |
459 | bfdsym = symbol_get_bfdsym (symbolP); |
460 | elfsym = elf_symbol_from (bfd_asymbol_bfd (bfdsym), bfdsym); | |
fa306131 | 461 | |
9c2799c2 | 462 | gas_assert (elfsym); |
fa306131 | 463 | |
20e420c2 RH |
464 | elfsym->internal_elf_sym.st_other &= ~3; |
465 | elfsym->internal_elf_sym.st_other |= visibility; | |
fa306131 | 466 | |
2e13b764 NC |
467 | if (c == ',') |
468 | { | |
469 | input_line_pointer ++; | |
fa306131 | 470 | |
2e13b764 | 471 | SKIP_WHITESPACE (); |
fa306131 | 472 | |
2e13b764 NC |
473 | if (*input_line_pointer == '\n') |
474 | c = '\n'; | |
475 | } | |
476 | } | |
477 | while (c == ','); | |
fa306131 | 478 | |
2e13b764 NC |
479 | demand_empty_rest_of_line (); |
480 | } | |
481 | ||
252b5132 RH |
482 | static segT previous_section; |
483 | static int previous_subsection; | |
484 | ||
9de8d8f1 RH |
485 | struct section_stack |
486 | { | |
487 | struct section_stack *next; | |
488 | segT seg, prev_seg; | |
489 | int subseg, prev_subseg; | |
490 | }; | |
491 | ||
492 | static struct section_stack *section_stack; | |
493 | ||
fafe6678 | 494 | static bfd_boolean |
86654c12 L |
495 | get_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *inf) |
496 | { | |
fafe6678 | 497 | const char *gname = inf; |
86654c12 L |
498 | const char *group_name = elf_group_name (sec); |
499 | ||
fafe6678 | 500 | return (group_name == gname |
86654c12 | 501 | || (group_name != NULL |
fafe6678 L |
502 | && gname != NULL |
503 | && strcmp (group_name, gname) == 0)); | |
86654c12 L |
504 | } |
505 | ||
252b5132 RH |
506 | /* Handle the .section pseudo-op. This code supports two different |
507 | syntaxes. | |
508 | ||
509 | The first is found on Solaris, and looks like | |
510 | .section ".sec1",#alloc,#execinstr,#write | |
511 | Here the names after '#' are the SHF_* flags to turn on for the | |
512 | section. I'm not sure how it determines the SHT_* type (BFD | |
513 | doesn't really give us control over the type, anyhow). | |
514 | ||
515 | The second format is found on UnixWare, and probably most SVR4 | |
516 | machines, and looks like | |
517 | .section .sec1,"a",@progbits | |
518 | The quoted string may contain any combination of a, w, x, and | |
519 | represents the SHF_* flags to turn on for the section. The string | |
520 | beginning with '@' can be progbits or nobits. There should be | |
521 | other possibilities, but I don't know what they are. In any case, | |
522 | BFD doesn't really let us set the section type. */ | |
523 | ||
cca86cc8 | 524 | void |
dbe2df79 AM |
525 | obj_elf_change_section (const char *name, |
526 | int type, | |
01e1a5bc | 527 | bfd_vma attr, |
dbe2df79 AM |
528 | int entsize, |
529 | const char *group_name, | |
530 | int linkonce, | |
531 | int push) | |
252b5132 | 532 | { |
fafe6678 | 533 | asection *old_sec; |
252b5132 | 534 | segT sec; |
742f45cf | 535 | flagword flags; |
551b43fd | 536 | const struct elf_backend_data *bed; |
f61e8019 | 537 | const struct bfd_elf_special_section *ssect; |
252b5132 RH |
538 | |
539 | #ifdef md_flush_pending_output | |
540 | md_flush_pending_output (); | |
541 | #endif | |
542 | ||
9de8d8f1 RH |
543 | /* Switch to the section, creating it if necessary. */ |
544 | if (push) | |
545 | { | |
546 | struct section_stack *elt; | |
547 | elt = xmalloc (sizeof (struct section_stack)); | |
548 | elt->next = section_stack; | |
549 | elt->seg = now_seg; | |
550 | elt->prev_seg = previous_section; | |
551 | elt->subseg = now_subseg; | |
552 | elt->prev_subseg = previous_subsection; | |
553 | section_stack = elt; | |
554 | } | |
555 | previous_section = now_seg; | |
556 | previous_subsection = now_subseg; | |
557 | ||
fafe6678 L |
558 | old_sec = bfd_get_section_by_name_if (stdoutput, name, get_section, |
559 | (void *) group_name); | |
560 | if (old_sec) | |
86654c12 | 561 | { |
fafe6678 | 562 | sec = old_sec; |
86654c12 L |
563 | subseg_set (sec, 0); |
564 | } | |
565 | else | |
566 | sec = subseg_force_new (name, 0); | |
567 | ||
551b43fd AM |
568 | bed = get_elf_backend_data (stdoutput); |
569 | ssect = (*bed->get_sec_type_attr) (stdoutput, sec); | |
9de8d8f1 | 570 | |
f61e8019 | 571 | if (ssect != NULL) |
2f89ff8d | 572 | { |
ea8f8eab L |
573 | bfd_boolean override = FALSE; |
574 | ||
2f89ff8d | 575 | if (type == SHT_NULL) |
f61e8019 AM |
576 | type = ssect->type; |
577 | else if (type != ssect->type) | |
2f89ff8d | 578 | { |
fafe6678 | 579 | if (old_sec == NULL |
2f89ff8d | 580 | /* FIXME: gcc, as of 2002-10-22, will emit |
7ed1d346 | 581 | |
2f89ff8d | 582 | .section .init_array,"aw",@progbits |
7ed1d346 | 583 | |
2f89ff8d | 584 | for __attribute__ ((section (".init_array"))). |
3b22753a L |
585 | "@progbits" is incorrect. Also for x86-64 large bss |
586 | sections, gcc, as of 2005-07-06, will emit | |
587 | ||
588 | .section .lbss,"aw",@progbits | |
589 | ||
2f89ff8d | 590 | "@progbits" is incorrect. */ |
3b22753a L |
591 | #ifdef TC_I386 |
592 | && (bed->s->arch_size != 64 | |
593 | || !(ssect->attr & SHF_X86_64_LARGE)) | |
594 | #endif | |
f61e8019 AM |
595 | && ssect->type != SHT_INIT_ARRAY |
596 | && ssect->type != SHT_FINI_ARRAY | |
597 | && ssect->type != SHT_PREINIT_ARRAY) | |
2f89ff8d L |
598 | { |
599 | /* We allow to specify any type for a .note section. */ | |
f61e8019 | 600 | if (ssect->type != SHT_NOTE) |
2f89ff8d L |
601 | as_warn (_("setting incorrect section type for %s"), |
602 | name); | |
603 | } | |
604 | else | |
605 | { | |
606 | as_warn (_("ignoring incorrect section type for %s"), | |
742f45cf | 607 | name); |
f61e8019 | 608 | type = ssect->type; |
2f89ff8d L |
609 | } |
610 | } | |
611 | ||
fafe6678 | 612 | if (old_sec == NULL && (attr & ~ssect->attr) != 0) |
2f89ff8d L |
613 | { |
614 | /* As a GNU extension, we permit a .note section to be | |
f61e8019 | 615 | allocatable. If the linker sees an allocatable .note |
2f89ff8d | 616 | section, it will create a PT_NOTE segment in the output |
92191b29 | 617 | file. We also allow "x" for .note.GNU-stack. */ |
f61e8019 AM |
618 | if (ssect->type == SHT_NOTE |
619 | && (attr == SHF_ALLOC || attr == SHF_EXECINSTR)) | |
620 | ; | |
621 | /* Allow different SHF_MERGE and SHF_STRINGS if we have | |
622 | something like .rodata.str. */ | |
623 | else if (ssect->suffix_length == -2 | |
624 | && name[ssect->prefix_length] == '.' | |
ea8f8eab L |
625 | && (attr |
626 | & ~ssect->attr | |
627 | & ~SHF_MERGE | |
628 | & ~SHF_STRINGS) == 0) | |
f61e8019 | 629 | ; |
ea8f8eab L |
630 | /* .interp, .strtab and .symtab can have SHF_ALLOC. */ |
631 | else if (attr == SHF_ALLOC | |
632 | && (strcmp (name, ".interp") == 0 | |
633 | || strcmp (name, ".strtab") == 0 | |
634 | || strcmp (name, ".symtab") == 0)) | |
635 | override = TRUE; | |
b9f18452 L |
636 | /* .note.GNU-stack can have SHF_EXECINSTR. */ |
637 | else if (attr == SHF_EXECINSTR | |
638 | && strcmp (name, ".note.GNU-stack") == 0) | |
639 | override = TRUE; | |
7f841127 L |
640 | #ifdef TC_ALPHA |
641 | /* A section on Alpha may have SHF_ALPHA_GPREL. */ | |
642 | else if ((attr & ~ssect->attr) == SHF_ALPHA_GPREL) | |
643 | override = TRUE; | |
644 | #endif | |
f61e8019 | 645 | else |
ea8f8eab | 646 | { |
86654c12 L |
647 | if (group_name == NULL) |
648 | as_warn (_("setting incorrect section attributes for %s"), | |
649 | name); | |
ea8f8eab L |
650 | override = TRUE; |
651 | } | |
2f89ff8d | 652 | } |
fafe6678 | 653 | if (!override && old_sec == NULL) |
f61e8019 | 654 | attr |= ssect->attr; |
2f89ff8d | 655 | } |
742f45cf AM |
656 | |
657 | /* Convert ELF type and flags to BFD flags. */ | |
658 | flags = (SEC_RELOC | |
659 | | ((attr & SHF_WRITE) ? 0 : SEC_READONLY) | |
660 | | ((attr & SHF_ALLOC) ? SEC_ALLOC : 0) | |
661 | | (((attr & SHF_ALLOC) && type != SHT_NOBITS) ? SEC_LOAD : 0) | |
f5fa8ca2 JJ |
662 | | ((attr & SHF_EXECINSTR) ? SEC_CODE : 0) |
663 | | ((attr & SHF_MERGE) ? SEC_MERGE : 0) | |
13ae64f3 JJ |
664 | | ((attr & SHF_STRINGS) ? SEC_STRINGS : 0) |
665 | | ((attr & SHF_TLS) ? SEC_THREAD_LOCAL : 0)); | |
9de8d8f1 | 666 | #ifdef md_elf_section_flags |
742f45cf | 667 | flags = md_elf_section_flags (flags, attr, type); |
9de8d8f1 RH |
668 | #endif |
669 | ||
86654c12 L |
670 | if (linkonce) |
671 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
672 | ||
fafe6678 | 673 | if (old_sec == NULL) |
742f45cf AM |
674 | { |
675 | symbolS *secsym; | |
676 | ||
7a6d0b32 JB |
677 | elf_section_type (sec) = type; |
678 | elf_section_flags (sec) = attr; | |
679 | ||
9de8d8f1 RH |
680 | /* Prevent SEC_HAS_CONTENTS from being inadvertently set. */ |
681 | if (type == SHT_NOBITS) | |
13c56984 | 682 | seg_info (sec)->bss = 1; |
9de8d8f1 RH |
683 | |
684 | bfd_set_section_flags (stdoutput, sec, flags); | |
f5fa8ca2 JJ |
685 | if (flags & SEC_MERGE) |
686 | sec->entsize = entsize; | |
aa1f4858 | 687 | elf_group_name (sec) = group_name; |
9de8d8f1 RH |
688 | |
689 | /* Add a symbol for this section to the symbol table. */ | |
690 | secsym = symbol_find (name); | |
691 | if (secsym != NULL) | |
692 | symbol_set_bfdsym (secsym, sec->symbol); | |
693 | else | |
13c56984 | 694 | symbol_table_insert (section_symbol (sec)); |
9de8d8f1 | 695 | } |
7a6d0b32 | 696 | else |
742f45cf | 697 | { |
7a6d0b32 JB |
698 | if (type != SHT_NULL |
699 | && (unsigned) type != elf_section_type (old_sec)) | |
700 | as_warn (_("ignoring changed section type for %s"), name); | |
701 | ||
702 | if (attr != 0) | |
703 | { | |
704 | /* If section attributes are specified the second time we see a | |
705 | particular section, then check that they are the same as we | |
706 | saw the first time. */ | |
707 | if (((old_sec->flags ^ flags) | |
708 | & (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE | |
709 | | SEC_EXCLUDE | SEC_SORT_ENTRIES | SEC_MERGE | SEC_STRINGS | |
710 | | SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD | |
711 | | SEC_THREAD_LOCAL))) | |
712 | as_warn (_("ignoring changed section attributes for %s"), name); | |
713 | if ((flags & SEC_MERGE) && old_sec->entsize != (unsigned) entsize) | |
714 | as_warn (_("ignoring changed section entity size for %s"), name); | |
715 | } | |
742f45cf | 716 | } |
9de8d8f1 RH |
717 | |
718 | #ifdef md_elf_section_change_hook | |
742f45cf | 719 | md_elf_section_change_hook (); |
9de8d8f1 RH |
720 | #endif |
721 | } | |
722 | ||
01e1a5bc | 723 | static bfd_vma |
dbe2df79 | 724 | obj_elf_parse_section_letters (char *str, size_t len) |
9de8d8f1 | 725 | { |
01e1a5bc | 726 | bfd_vma attr = 0; |
9de8d8f1 RH |
727 | |
728 | while (len > 0) | |
729 | { | |
730 | switch (*str) | |
731 | { | |
732 | case 'a': | |
733 | attr |= SHF_ALLOC; | |
734 | break; | |
735 | case 'w': | |
736 | attr |= SHF_WRITE; | |
737 | break; | |
738 | case 'x': | |
739 | attr |= SHF_EXECINSTR; | |
740 | break; | |
9469ddf0 | 741 | case 'M': |
f5fa8ca2 JJ |
742 | attr |= SHF_MERGE; |
743 | break; | |
9469ddf0 | 744 | case 'S': |
f5fa8ca2 JJ |
745 | attr |= SHF_STRINGS; |
746 | break; | |
060adf0e AM |
747 | case 'G': |
748 | attr |= SHF_GROUP; | |
749 | break; | |
13ae64f3 JJ |
750 | case 'T': |
751 | attr |= SHF_TLS; | |
752 | break; | |
34105363 L |
753 | /* Compatibility. */ |
754 | case 'm': | |
755 | if (*(str - 1) == 'a') | |
756 | { | |
757 | attr |= SHF_MERGE; | |
758 | if (len > 1 && str[1] == 's') | |
759 | { | |
760 | attr |= SHF_STRINGS; | |
761 | str++, len--; | |
762 | } | |
763 | break; | |
764 | } | |
9de8d8f1 RH |
765 | default: |
766 | { | |
13ae64f3 | 767 | char *bad_msg = _("unrecognized .section attribute: want a,w,x,M,S,G,T"); |
9de8d8f1 | 768 | #ifdef md_elf_section_letter |
01e1a5bc NC |
769 | bfd_vma md_attr = md_elf_section_letter (*str, &bad_msg); |
770 | if (md_attr > 0) | |
9de8d8f1 RH |
771 | attr |= md_attr; |
772 | else | |
773 | #endif | |
711ef82f | 774 | as_fatal ("%s", bad_msg); |
9de8d8f1 RH |
775 | } |
776 | break; | |
777 | } | |
778 | str++, len--; | |
779 | } | |
780 | ||
781 | return attr; | |
782 | } | |
783 | ||
8d28c9d7 | 784 | static int |
44bf2362 | 785 | obj_elf_section_type (char *str, size_t len, bfd_boolean warn) |
9de8d8f1 RH |
786 | { |
787 | if (len == 8 && strncmp (str, "progbits", 8) == 0) | |
788 | return SHT_PROGBITS; | |
789 | if (len == 6 && strncmp (str, "nobits", 6) == 0) | |
790 | return SHT_NOBITS; | |
34f70875 L |
791 | if (len == 4 && strncmp (str, "note", 4) == 0) |
792 | return SHT_NOTE; | |
10b016c2 PB |
793 | if (len == 10 && strncmp (str, "init_array", 10) == 0) |
794 | return SHT_INIT_ARRAY; | |
795 | if (len == 10 && strncmp (str, "fini_array", 10) == 0) | |
796 | return SHT_FINI_ARRAY; | |
797 | if (len == 13 && strncmp (str, "preinit_array", 13) == 0) | |
798 | return SHT_PREINIT_ARRAY; | |
9de8d8f1 RH |
799 | |
800 | #ifdef md_elf_section_type | |
801 | { | |
802 | int md_type = md_elf_section_type (str, len); | |
803 | if (md_type >= 0) | |
804 | return md_type; | |
805 | } | |
806 | #endif | |
807 | ||
44bf2362 NC |
808 | if (warn) |
809 | as_warn (_("unrecognized section type")); | |
810 | return 0; | |
811 | } | |
812 | ||
01e1a5bc | 813 | static bfd_vma |
44bf2362 NC |
814 | obj_elf_section_word (char *str, size_t len, int *type) |
815 | { | |
816 | int ret; | |
817 | ||
818 | if (len == 5 && strncmp (str, "write", 5) == 0) | |
819 | return SHF_WRITE; | |
820 | if (len == 5 && strncmp (str, "alloc", 5) == 0) | |
821 | return SHF_ALLOC; | |
822 | if (len == 9 && strncmp (str, "execinstr", 9) == 0) | |
823 | return SHF_EXECINSTR; | |
824 | if (len == 3 && strncmp (str, "tls", 3) == 0) | |
825 | return SHF_TLS; | |
826 | ||
827 | #ifdef md_elf_section_word | |
828 | { | |
01e1a5bc NC |
829 | bfd_vma md_attr = md_elf_section_word (str, len); |
830 | if (md_attr > 0) | |
44bf2362 NC |
831 | return md_attr; |
832 | } | |
833 | #endif | |
834 | ||
835 | ret = obj_elf_section_type (str, len, FALSE); | |
836 | if (ret != 0) | |
837 | *type = ret; | |
838 | else | |
839 | as_warn (_("unrecognized section attribute")); | |
840 | ||
9de8d8f1 RH |
841 | return 0; |
842 | } | |
843 | ||
6ce8b369 AM |
844 | /* Get name of section. */ |
845 | static char * | |
dbe2df79 | 846 | obj_elf_section_name (void) |
6ce8b369 AM |
847 | { |
848 | char *name; | |
849 | ||
850 | SKIP_WHITESPACE (); | |
851 | if (*input_line_pointer == '"') | |
852 | { | |
853 | int dummy; | |
854 | ||
855 | name = demand_copy_C_string (&dummy); | |
856 | if (name == NULL) | |
857 | { | |
858 | ignore_rest_of_line (); | |
859 | return NULL; | |
860 | } | |
861 | } | |
862 | else | |
863 | { | |
864 | char *end = input_line_pointer; | |
865 | ||
866 | while (0 == strchr ("\n\t,; ", *end)) | |
867 | end++; | |
868 | if (end == input_line_pointer) | |
869 | { | |
c95b35a9 | 870 | as_bad (_("missing name")); |
6ce8b369 AM |
871 | ignore_rest_of_line (); |
872 | return NULL; | |
873 | } | |
874 | ||
875 | name = xmalloc (end - input_line_pointer + 1); | |
876 | memcpy (name, input_line_pointer, end - input_line_pointer); | |
877 | name[end - input_line_pointer] = '\0'; | |
612d7b83 L |
878 | #ifdef tc_canonicalize_section_name |
879 | name = tc_canonicalize_section_name (name); | |
880 | #endif | |
6ce8b369 AM |
881 | input_line_pointer = end; |
882 | } | |
883 | SKIP_WHITESPACE (); | |
884 | return name; | |
885 | } | |
886 | ||
9de8d8f1 | 887 | void |
dbe2df79 | 888 | obj_elf_section (int push) |
9de8d8f1 | 889 | { |
aa1f4858 | 890 | char *name, *group_name, *beg; |
01e1a5bc NC |
891 | int type, dummy; |
892 | bfd_vma attr; | |
f5fa8ca2 | 893 | int entsize; |
d2dab548 | 894 | int linkonce; |
6f932bce | 895 | subsegT new_subsection = -1; |
9de8d8f1 | 896 | |
5b93d8bb | 897 | #ifndef TC_I370 |
252b5132 RH |
898 | if (flag_mri) |
899 | { | |
900 | char mri_type; | |
901 | ||
9de8d8f1 | 902 | #ifdef md_flush_pending_output |
60bcf0fa | 903 | md_flush_pending_output (); |
9de8d8f1 RH |
904 | #endif |
905 | ||
252b5132 RH |
906 | previous_section = now_seg; |
907 | previous_subsection = now_subseg; | |
908 | ||
909 | s_mri_sect (&mri_type); | |
910 | ||
911 | #ifdef md_elf_section_change_hook | |
912 | md_elf_section_change_hook (); | |
913 | #endif | |
914 | ||
915 | return; | |
916 | } | |
5b93d8bb | 917 | #endif /* ! defined (TC_I370) */ |
252b5132 | 918 | |
6ce8b369 AM |
919 | name = obj_elf_section_name (); |
920 | if (name == NULL) | |
921 | return; | |
252b5132 RH |
922 | type = SHT_NULL; |
923 | attr = 0; | |
aa1f4858 | 924 | group_name = NULL; |
f5fa8ca2 | 925 | entsize = 0; |
d2dab548 | 926 | linkonce = 0; |
252b5132 RH |
927 | |
928 | if (*input_line_pointer == ',') | |
929 | { | |
930 | /* Skip the comma. */ | |
931 | ++input_line_pointer; | |
252b5132 RH |
932 | SKIP_WHITESPACE (); |
933 | ||
9cfc3331 | 934 | if (push && ISDIGIT (*input_line_pointer)) |
6f932bce | 935 | { |
9cfc3331 | 936 | /* .pushsection has an optional subsection. */ |
6f932bce | 937 | new_subsection = (subsegT) get_absolute_expression (); |
9cfc3331 L |
938 | |
939 | SKIP_WHITESPACE (); | |
940 | ||
941 | /* Stop if we don't see a comma. */ | |
942 | if (*input_line_pointer != ',') | |
943 | goto done; | |
944 | ||
945 | /* Skip the comma. */ | |
946 | ++input_line_pointer; | |
947 | SKIP_WHITESPACE (); | |
6f932bce | 948 | } |
9cfc3331 L |
949 | |
950 | if (*input_line_pointer == '"') | |
252b5132 | 951 | { |
9de8d8f1 RH |
952 | beg = demand_copy_C_string (&dummy); |
953 | if (beg == NULL) | |
252b5132 | 954 | { |
9de8d8f1 RH |
955 | ignore_rest_of_line (); |
956 | return; | |
252b5132 | 957 | } |
9de8d8f1 | 958 | attr |= obj_elf_parse_section_letters (beg, strlen (beg)); |
252b5132 RH |
959 | |
960 | SKIP_WHITESPACE (); | |
961 | if (*input_line_pointer == ',') | |
962 | { | |
9de8d8f1 | 963 | char c; |
060adf0e AM |
964 | char *save = input_line_pointer; |
965 | ||
252b5132 RH |
966 | ++input_line_pointer; |
967 | SKIP_WHITESPACE (); | |
9de8d8f1 RH |
968 | c = *input_line_pointer; |
969 | if (c == '"') | |
252b5132 | 970 | { |
9de8d8f1 RH |
971 | beg = demand_copy_C_string (&dummy); |
972 | if (beg == NULL) | |
252b5132 | 973 | { |
9de8d8f1 RH |
974 | ignore_rest_of_line (); |
975 | return; | |
252b5132 | 976 | } |
44bf2362 | 977 | type = obj_elf_section_type (beg, strlen (beg), TRUE); |
9de8d8f1 RH |
978 | } |
979 | else if (c == '@' || c == '%') | |
980 | { | |
981 | beg = ++input_line_pointer; | |
982 | c = get_symbol_end (); | |
983 | *input_line_pointer = c; | |
44bf2362 | 984 | type = obj_elf_section_type (beg, input_line_pointer - beg, TRUE); |
252b5132 | 985 | } |
060adf0e AM |
986 | else |
987 | input_line_pointer = save; | |
252b5132 | 988 | } |
f5fa8ca2 JJ |
989 | |
990 | SKIP_WHITESPACE (); | |
6ce8b369 | 991 | if ((attr & SHF_MERGE) != 0 && *input_line_pointer == ',') |
f5fa8ca2 JJ |
992 | { |
993 | ++input_line_pointer; | |
994 | SKIP_WHITESPACE (); | |
995 | entsize = get_absolute_expression (); | |
6ce8b369 | 996 | SKIP_WHITESPACE (); |
f5fa8ca2 JJ |
997 | if (entsize < 0) |
998 | { | |
6ce8b369 | 999 | as_warn (_("invalid merge entity size")); |
f5fa8ca2 JJ |
1000 | attr &= ~SHF_MERGE; |
1001 | entsize = 0; | |
1002 | } | |
1003 | } | |
6ce8b369 AM |
1004 | else if ((attr & SHF_MERGE) != 0) |
1005 | { | |
1006 | as_warn (_("entity size for SHF_MERGE not specified")); | |
1007 | attr &= ~SHF_MERGE; | |
1008 | } | |
060adf0e AM |
1009 | |
1010 | if ((attr & SHF_GROUP) != 0 && *input_line_pointer == ',') | |
1011 | { | |
1012 | ++input_line_pointer; | |
aa1f4858 AM |
1013 | group_name = obj_elf_section_name (); |
1014 | if (group_name == NULL) | |
060adf0e | 1015 | attr &= ~SHF_GROUP; |
d2dab548 AM |
1016 | else if (strncmp (input_line_pointer, ",comdat", 7) == 0) |
1017 | { | |
1018 | input_line_pointer += 7; | |
1019 | linkonce = 1; | |
1020 | } | |
1021 | else if (strncmp (name, ".gnu.linkonce", 13) == 0) | |
1022 | linkonce = 1; | |
060adf0e AM |
1023 | } |
1024 | else if ((attr & SHF_GROUP) != 0) | |
1025 | { | |
1026 | as_warn (_("group name for SHF_GROUP not specified")); | |
1027 | attr &= ~SHF_GROUP; | |
1028 | } | |
252b5132 RH |
1029 | } |
1030 | else | |
1031 | { | |
1032 | do | |
1033 | { | |
9de8d8f1 RH |
1034 | char c; |
1035 | ||
252b5132 RH |
1036 | SKIP_WHITESPACE (); |
1037 | if (*input_line_pointer != '#') | |
1038 | { | |
c95b35a9 | 1039 | as_bad (_("character following name is not '#'")); |
252b5132 RH |
1040 | ignore_rest_of_line (); |
1041 | return; | |
1042 | } | |
9de8d8f1 RH |
1043 | beg = ++input_line_pointer; |
1044 | c = get_symbol_end (); | |
1045 | *input_line_pointer = c; | |
1046 | ||
44bf2362 | 1047 | attr |= obj_elf_section_word (beg, input_line_pointer - beg, & type); |
9de8d8f1 | 1048 | |
252b5132 RH |
1049 | SKIP_WHITESPACE (); |
1050 | } | |
1051 | while (*input_line_pointer++ == ','); | |
1052 | --input_line_pointer; | |
1053 | } | |
1054 | } | |
1055 | ||
9cfc3331 | 1056 | done: |
252b5132 | 1057 | demand_empty_rest_of_line (); |
9de8d8f1 | 1058 | |
d2dab548 | 1059 | obj_elf_change_section (name, type, attr, entsize, group_name, linkonce, push); |
6f932bce NC |
1060 | |
1061 | if (push && new_subsection != -1) | |
1062 | subseg_set (now_seg, new_subsection); | |
252b5132 RH |
1063 | } |
1064 | ||
1065 | /* Change to the .data section. */ | |
1066 | ||
16b93d88 | 1067 | void |
dbe2df79 | 1068 | obj_elf_data (int i) |
252b5132 RH |
1069 | { |
1070 | #ifdef md_flush_pending_output | |
1071 | md_flush_pending_output (); | |
1072 | #endif | |
1073 | ||
1074 | previous_section = now_seg; | |
1075 | previous_subsection = now_subseg; | |
1076 | s_data (i); | |
1077 | ||
1078 | #ifdef md_elf_section_change_hook | |
1079 | md_elf_section_change_hook (); | |
1080 | #endif | |
1081 | } | |
1082 | ||
1083 | /* Change to the .text section. */ | |
1084 | ||
16b93d88 | 1085 | void |
dbe2df79 | 1086 | obj_elf_text (int i) |
252b5132 RH |
1087 | { |
1088 | #ifdef md_flush_pending_output | |
1089 | md_flush_pending_output (); | |
1090 | #endif | |
1091 | ||
1092 | previous_section = now_seg; | |
1093 | previous_subsection = now_subseg; | |
1094 | s_text (i); | |
1095 | ||
1096 | #ifdef md_elf_section_change_hook | |
1097 | md_elf_section_change_hook (); | |
1098 | #endif | |
1099 | } | |
1100 | ||
8fe53b44 JB |
1101 | /* Change to the *ABS* section. */ |
1102 | ||
1103 | void | |
1104 | obj_elf_struct (int i) | |
1105 | { | |
1106 | #ifdef md_flush_pending_output | |
1107 | md_flush_pending_output (); | |
1108 | #endif | |
1109 | ||
1110 | previous_section = now_seg; | |
1111 | previous_subsection = now_subseg; | |
1112 | s_struct (i); | |
1113 | ||
1114 | #ifdef md_elf_section_change_hook | |
1115 | md_elf_section_change_hook (); | |
1116 | #endif | |
1117 | } | |
1118 | ||
252b5132 | 1119 | static void |
dbe2df79 | 1120 | obj_elf_subsection (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1121 | { |
6f932bce | 1122 | int temp; |
252b5132 RH |
1123 | |
1124 | #ifdef md_flush_pending_output | |
1125 | md_flush_pending_output (); | |
1126 | #endif | |
1127 | ||
1128 | previous_section = now_seg; | |
1129 | previous_subsection = now_subseg; | |
1130 | ||
1131 | temp = get_absolute_expression (); | |
1132 | subseg_set (now_seg, (subsegT) temp); | |
1133 | demand_empty_rest_of_line (); | |
1134 | ||
1135 | #ifdef md_elf_section_change_hook | |
1136 | md_elf_section_change_hook (); | |
1137 | #endif | |
1138 | } | |
1139 | ||
1140 | /* This can be called from the processor backends if they change | |
1141 | sections. */ | |
1142 | ||
1143 | void | |
dbe2df79 | 1144 | obj_elf_section_change_hook (void) |
252b5132 RH |
1145 | { |
1146 | previous_section = now_seg; | |
1147 | previous_subsection = now_subseg; | |
1148 | } | |
1149 | ||
1150 | void | |
dbe2df79 | 1151 | obj_elf_previous (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1152 | { |
9de8d8f1 RH |
1153 | segT new_section; |
1154 | int new_subsection; | |
1155 | ||
252b5132 RH |
1156 | if (previous_section == 0) |
1157 | { | |
6ce8b369 | 1158 | as_warn (_(".previous without corresponding .section; ignored")); |
252b5132 RH |
1159 | return; |
1160 | } | |
1161 | ||
1162 | #ifdef md_flush_pending_output | |
1163 | md_flush_pending_output (); | |
1164 | #endif | |
1165 | ||
9de8d8f1 RH |
1166 | new_section = previous_section; |
1167 | new_subsection = previous_subsection; | |
1168 | previous_section = now_seg; | |
1169 | previous_subsection = now_subseg; | |
1170 | subseg_set (new_section, new_subsection); | |
1171 | ||
1172 | #ifdef md_elf_section_change_hook | |
1173 | md_elf_section_change_hook (); | |
1174 | #endif | |
1175 | } | |
1176 | ||
1177 | static void | |
dbe2df79 | 1178 | obj_elf_popsection (int xxx ATTRIBUTE_UNUSED) |
9de8d8f1 RH |
1179 | { |
1180 | struct section_stack *top = section_stack; | |
1181 | ||
1182 | if (top == NULL) | |
1183 | { | |
6ce8b369 | 1184 | as_warn (_(".popsection without corresponding .pushsection; ignored")); |
9de8d8f1 RH |
1185 | return; |
1186 | } | |
1187 | ||
1188 | #ifdef md_flush_pending_output | |
1189 | md_flush_pending_output (); | |
1190 | #endif | |
1191 | ||
1192 | section_stack = top->next; | |
1193 | previous_section = top->prev_seg; | |
1194 | previous_subsection = top->prev_subseg; | |
1195 | subseg_set (top->seg, top->subseg); | |
1196 | free (top); | |
252b5132 RH |
1197 | |
1198 | #ifdef md_elf_section_change_hook | |
1199 | md_elf_section_change_hook (); | |
1200 | #endif | |
1201 | } | |
1202 | ||
1203 | static void | |
dbe2df79 | 1204 | obj_elf_line (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1205 | { |
1206 | /* Assume delimiter is part of expression. BSD4.2 as fails with | |
bf514e21 | 1207 | delightful bug, so we are not being incompatible here. */ |
dbe2df79 | 1208 | new_logical_line (NULL, get_absolute_expression ()); |
252b5132 RH |
1209 | demand_empty_rest_of_line (); |
1210 | } | |
1211 | ||
1212 | /* This handles the .symver pseudo-op, which is used to specify a | |
1213 | symbol version. The syntax is ``.symver NAME,SYMVERNAME''. | |
1214 | SYMVERNAME may contain ELF_VER_CHR ('@') characters. This | |
1215 | pseudo-op causes the assembler to emit a symbol named SYMVERNAME | |
1216 | with the same value as the symbol NAME. */ | |
1217 | ||
1218 | static void | |
dbe2df79 | 1219 | obj_elf_symver (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1220 | { |
1221 | char *name; | |
1222 | char c; | |
468cced8 | 1223 | char old_lexat; |
252b5132 RH |
1224 | symbolS *sym; |
1225 | ||
1226 | name = input_line_pointer; | |
1227 | c = get_symbol_end (); | |
1228 | ||
1229 | sym = symbol_find_or_make (name); | |
1230 | ||
1231 | *input_line_pointer = c; | |
1232 | ||
252b5132 RH |
1233 | SKIP_WHITESPACE (); |
1234 | if (*input_line_pointer != ',') | |
1235 | { | |
1236 | as_bad (_("expected comma after name in .symver")); | |
1237 | ignore_rest_of_line (); | |
1238 | return; | |
1239 | } | |
1240 | ||
1241 | ++input_line_pointer; | |
eba874d8 | 1242 | SKIP_WHITESPACE (); |
252b5132 | 1243 | name = input_line_pointer; |
468cced8 AM |
1244 | |
1245 | /* Temporarily include '@' in symbol names. */ | |
1246 | old_lexat = lex_type[(unsigned char) '@']; | |
1247 | lex_type[(unsigned char) '@'] |= LEX_NAME; | |
1248 | c = get_symbol_end (); | |
1249 | lex_type[(unsigned char) '@'] = old_lexat; | |
252b5132 | 1250 | |
339681c0 L |
1251 | if (symbol_get_obj (sym)->versioned_name == NULL) |
1252 | { | |
1253 | symbol_get_obj (sym)->versioned_name = xstrdup (name); | |
252b5132 | 1254 | |
339681c0 | 1255 | *input_line_pointer = c; |
252b5132 | 1256 | |
6f620856 L |
1257 | if (strchr (symbol_get_obj (sym)->versioned_name, |
1258 | ELF_VER_CHR) == NULL) | |
339681c0 L |
1259 | { |
1260 | as_bad (_("missing version name in `%s' for symbol `%s'"), | |
1261 | symbol_get_obj (sym)->versioned_name, | |
1262 | S_GET_NAME (sym)); | |
1263 | ignore_rest_of_line (); | |
1264 | return; | |
1265 | } | |
1266 | } | |
1267 | else | |
252b5132 | 1268 | { |
339681c0 L |
1269 | if (strcmp (symbol_get_obj (sym)->versioned_name, name)) |
1270 | { | |
1271 | as_bad (_("multiple versions [`%s'|`%s'] for symbol `%s'"), | |
1272 | name, symbol_get_obj (sym)->versioned_name, | |
1273 | S_GET_NAME (sym)); | |
1274 | ignore_rest_of_line (); | |
1275 | return; | |
1276 | } | |
1277 | ||
1278 | *input_line_pointer = c; | |
252b5132 RH |
1279 | } |
1280 | ||
1281 | demand_empty_rest_of_line (); | |
1282 | } | |
1283 | ||
1284 | /* This handles the .vtable_inherit pseudo-op, which is used to indicate | |
1285 | to the linker the hierarchy in which a particular table resides. The | |
1286 | syntax is ".vtable_inherit CHILDNAME, PARENTNAME". */ | |
1287 | ||
904a31bf | 1288 | struct fix * |
dbe2df79 | 1289 | obj_elf_vtable_inherit (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1290 | { |
1291 | char *cname, *pname; | |
1292 | symbolS *csym, *psym; | |
1293 | char c, bad = 0; | |
1294 | ||
1295 | if (*input_line_pointer == '#') | |
1296 | ++input_line_pointer; | |
1297 | ||
1298 | cname = input_line_pointer; | |
1299 | c = get_symbol_end (); | |
1300 | csym = symbol_find (cname); | |
1301 | ||
1302 | /* GCFIXME: should check that we don't have two .vtable_inherits for | |
1303 | the same child symbol. Also, we can currently only do this if the | |
1304 | child symbol is already exists and is placed in a fragment. */ | |
1305 | ||
49309057 | 1306 | if (csym == NULL || symbol_get_frag (csym) == NULL) |
252b5132 | 1307 | { |
bd3ba5d1 | 1308 | as_bad (_("expected `%s' to have already been set for .vtable_inherit"), |
252b5132 RH |
1309 | cname); |
1310 | bad = 1; | |
1311 | } | |
1312 | ||
1313 | *input_line_pointer = c; | |
1314 | ||
1315 | SKIP_WHITESPACE (); | |
1316 | if (*input_line_pointer != ',') | |
1317 | { | |
bd3ba5d1 | 1318 | as_bad (_("expected comma after name in .vtable_inherit")); |
252b5132 | 1319 | ignore_rest_of_line (); |
904a31bf | 1320 | return NULL; |
252b5132 RH |
1321 | } |
1322 | ||
1323 | ++input_line_pointer; | |
1324 | SKIP_WHITESPACE (); | |
1325 | ||
1326 | if (*input_line_pointer == '#') | |
1327 | ++input_line_pointer; | |
1328 | ||
1329 | if (input_line_pointer[0] == '0' | |
1330 | && (input_line_pointer[1] == '\0' | |
3882b010 | 1331 | || ISSPACE (input_line_pointer[1]))) |
252b5132 RH |
1332 | { |
1333 | psym = section_symbol (absolute_section); | |
1334 | ++input_line_pointer; | |
1335 | } | |
1336 | else | |
1337 | { | |
1338 | pname = input_line_pointer; | |
1339 | c = get_symbol_end (); | |
1340 | psym = symbol_find_or_make (pname); | |
1341 | *input_line_pointer = c; | |
1342 | } | |
1343 | ||
1344 | demand_empty_rest_of_line (); | |
1345 | ||
1346 | if (bad) | |
904a31bf | 1347 | return NULL; |
252b5132 | 1348 | |
9c2799c2 | 1349 | gas_assert (symbol_get_value_expression (csym)->X_op == O_constant); |
904a31bf AM |
1350 | return fix_new (symbol_get_frag (csym), |
1351 | symbol_get_value_expression (csym)->X_add_number, | |
1352 | 0, psym, 0, 0, BFD_RELOC_VTABLE_INHERIT); | |
252b5132 | 1353 | } |
fa306131 | 1354 | |
252b5132 RH |
1355 | /* This handles the .vtable_entry pseudo-op, which is used to indicate |
1356 | to the linker that a vtable slot was used. The syntax is | |
1357 | ".vtable_entry tablename, offset". */ | |
1358 | ||
904a31bf | 1359 | struct fix * |
dbe2df79 | 1360 | obj_elf_vtable_entry (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1361 | { |
1362 | char *name; | |
1363 | symbolS *sym; | |
1364 | offsetT offset; | |
1365 | char c; | |
1366 | ||
1367 | if (*input_line_pointer == '#') | |
1368 | ++input_line_pointer; | |
1369 | ||
1370 | name = input_line_pointer; | |
1371 | c = get_symbol_end (); | |
1372 | sym = symbol_find_or_make (name); | |
1373 | *input_line_pointer = c; | |
1374 | ||
1375 | SKIP_WHITESPACE (); | |
1376 | if (*input_line_pointer != ',') | |
1377 | { | |
bd3ba5d1 | 1378 | as_bad (_("expected comma after name in .vtable_entry")); |
252b5132 | 1379 | ignore_rest_of_line (); |
904a31bf | 1380 | return NULL; |
252b5132 RH |
1381 | } |
1382 | ||
1383 | ++input_line_pointer; | |
1384 | if (*input_line_pointer == '#') | |
1385 | ++input_line_pointer; | |
1386 | ||
1387 | offset = get_absolute_expression (); | |
1388 | ||
252b5132 | 1389 | demand_empty_rest_of_line (); |
904a31bf AM |
1390 | |
1391 | return fix_new (frag_now, frag_now_fix (), 0, sym, offset, 0, | |
1392 | BFD_RELOC_VTABLE_ENTRY); | |
252b5132 RH |
1393 | } |
1394 | ||
1395 | void | |
dbe2df79 | 1396 | elf_obj_read_begin_hook (void) |
252b5132 RH |
1397 | { |
1398 | #ifdef NEED_ECOFF_DEBUG | |
1399 | if (ECOFF_DEBUGGING) | |
1400 | ecoff_read_begin_hook (); | |
1401 | #endif | |
1402 | } | |
1403 | ||
1404 | void | |
dbe2df79 | 1405 | elf_obj_symbol_new_hook (symbolS *symbolP) |
252b5132 | 1406 | { |
49309057 ILT |
1407 | struct elf_obj_sy *sy_obj; |
1408 | ||
1409 | sy_obj = symbol_get_obj (symbolP); | |
1410 | sy_obj->size = NULL; | |
1411 | sy_obj->versioned_name = NULL; | |
252b5132 RH |
1412 | |
1413 | #ifdef NEED_ECOFF_DEBUG | |
1414 | if (ECOFF_DEBUGGING) | |
1415 | ecoff_symbol_new_hook (symbolP); | |
1416 | #endif | |
1417 | } | |
1418 | ||
8fd3e36b AM |
1419 | /* When setting one symbol equal to another, by default we probably |
1420 | want them to have the same "size", whatever it means in the current | |
1421 | context. */ | |
1422 | ||
1423 | void | |
dbe2df79 | 1424 | elf_copy_symbol_attributes (symbolS *dest, symbolS *src) |
8fd3e36b | 1425 | { |
060adf0e AM |
1426 | struct elf_obj_sy *srcelf = symbol_get_obj (src); |
1427 | struct elf_obj_sy *destelf = symbol_get_obj (dest); | |
1428 | if (srcelf->size) | |
1429 | { | |
1430 | if (destelf->size == NULL) | |
dbe2df79 | 1431 | destelf->size = xmalloc (sizeof (expressionS)); |
060adf0e AM |
1432 | *destelf->size = *srcelf->size; |
1433 | } | |
1434 | else | |
1435 | { | |
1436 | if (destelf->size != NULL) | |
1437 | free (destelf->size); | |
1438 | destelf->size = NULL; | |
1439 | } | |
1440 | S_SET_SIZE (dest, S_GET_SIZE (src)); | |
26eb4093 JJ |
1441 | /* Don't copy visibility. */ |
1442 | S_SET_OTHER (dest, (ELF_ST_VISIBILITY (S_GET_OTHER (dest)) | |
1443 | | (S_GET_OTHER (src) & ~ELF_ST_VISIBILITY (-1)))); | |
8fd3e36b AM |
1444 | } |
1445 | ||
252b5132 | 1446 | void |
dbe2df79 | 1447 | obj_elf_version (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1448 | { |
1449 | char *name; | |
1450 | unsigned int c; | |
252b5132 RH |
1451 | char *p; |
1452 | asection *seg = now_seg; | |
1453 | subsegT subseg = now_subseg; | |
1454 | Elf_Internal_Note i_note; | |
1455 | Elf_External_Note e_note; | |
dbe2df79 | 1456 | asection *note_secp = NULL; |
252b5132 RH |
1457 | |
1458 | SKIP_WHITESPACE (); | |
1459 | if (*input_line_pointer == '\"') | |
1460 | { | |
6afdfa61 NC |
1461 | unsigned int len; |
1462 | ||
bf514e21 | 1463 | ++input_line_pointer; /* -> 1st char of string. */ |
252b5132 RH |
1464 | name = input_line_pointer; |
1465 | ||
1466 | while (is_a_char (c = next_char_of_string ())) | |
1467 | ; | |
1468 | c = *input_line_pointer; | |
1469 | *input_line_pointer = '\0'; | |
1470 | *(input_line_pointer - 1) = '\0'; | |
1471 | *input_line_pointer = c; | |
1472 | ||
6afdfa61 | 1473 | /* Create the .note section. */ |
252b5132 RH |
1474 | note_secp = subseg_new (".note", 0); |
1475 | bfd_set_section_flags (stdoutput, | |
1476 | note_secp, | |
1477 | SEC_HAS_CONTENTS | SEC_READONLY); | |
1478 | ||
6afdfa61 NC |
1479 | /* Process the version string. */ |
1480 | len = strlen (name) + 1; | |
252b5132 | 1481 | |
6afdfa61 NC |
1482 | /* PR 3456: Although the name field is padded out to an 4-byte |
1483 | boundary, the namesz field should not be adjusted. */ | |
1484 | i_note.namesz = len; | |
1485 | i_note.descsz = 0; /* No description. */ | |
252b5132 RH |
1486 | i_note.type = NT_VERSION; |
1487 | p = frag_more (sizeof (e_note.namesz)); | |
dbe2df79 | 1488 | md_number_to_chars (p, i_note.namesz, sizeof (e_note.namesz)); |
252b5132 | 1489 | p = frag_more (sizeof (e_note.descsz)); |
dbe2df79 | 1490 | md_number_to_chars (p, i_note.descsz, sizeof (e_note.descsz)); |
252b5132 | 1491 | p = frag_more (sizeof (e_note.type)); |
dbe2df79 | 1492 | md_number_to_chars (p, i_note.type, sizeof (e_note.type)); |
6afdfa61 | 1493 | p = frag_more (len); |
5ab504f9 | 1494 | memcpy (p, name, len); |
252b5132 | 1495 | |
252b5132 RH |
1496 | frag_align (2, 0, 0); |
1497 | ||
1498 | subseg_set (seg, subseg); | |
1499 | } | |
1500 | else | |
6afdfa61 NC |
1501 | as_bad (_("expected quoted string")); |
1502 | ||
252b5132 RH |
1503 | demand_empty_rest_of_line (); |
1504 | } | |
1505 | ||
1506 | static void | |
dbe2df79 | 1507 | obj_elf_size (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1508 | { |
1509 | char *name = input_line_pointer; | |
1510 | char c = get_symbol_end (); | |
1511 | char *p; | |
1512 | expressionS exp; | |
1513 | symbolS *sym; | |
1514 | ||
1515 | p = input_line_pointer; | |
1516 | *p = c; | |
1517 | SKIP_WHITESPACE (); | |
1518 | if (*input_line_pointer != ',') | |
1519 | { | |
1520 | *p = 0; | |
1521 | as_bad (_("expected comma after name `%s' in .size directive"), name); | |
1522 | *p = c; | |
1523 | ignore_rest_of_line (); | |
1524 | return; | |
1525 | } | |
1526 | input_line_pointer++; | |
1527 | expression (&exp); | |
1528 | if (exp.X_op == O_absent) | |
1529 | { | |
1530 | as_bad (_("missing expression in .size directive")); | |
1531 | exp.X_op = O_constant; | |
1532 | exp.X_add_number = 0; | |
1533 | } | |
1534 | *p = 0; | |
1535 | sym = symbol_find_or_make (name); | |
1536 | *p = c; | |
1537 | if (exp.X_op == O_constant) | |
c538998c JJ |
1538 | { |
1539 | S_SET_SIZE (sym, exp.X_add_number); | |
1540 | if (symbol_get_obj (sym)->size) | |
1541 | { | |
1542 | xfree (symbol_get_obj (sym)->size); | |
1543 | symbol_get_obj (sym)->size = NULL; | |
1544 | } | |
1545 | } | |
252b5132 RH |
1546 | else |
1547 | { | |
dbe2df79 | 1548 | symbol_get_obj (sym)->size = xmalloc (sizeof (expressionS)); |
49309057 | 1549 | *symbol_get_obj (sym)->size = exp; |
252b5132 RH |
1550 | } |
1551 | demand_empty_rest_of_line (); | |
1552 | } | |
1553 | ||
1554 | /* Handle the ELF .type pseudo-op. This sets the type of a symbol. | |
44bf2362 | 1555 | There are six syntaxes: |
fa306131 | 1556 | |
252b5132 RH |
1557 | The first (used on Solaris) is |
1558 | .type SYM,#function | |
1559 | The second (used on UnixWare) is | |
1560 | .type SYM,@function | |
1561 | The third (reportedly to be used on Irix 6.0) is | |
1562 | .type SYM STT_FUNC | |
1563 | The fourth (used on NetBSD/Arm and Linux/ARM) is | |
1564 | .type SYM,%function | |
aa8c34c3 JE |
1565 | The fifth (used on SVR4/860) is |
1566 | .type SYM,"function" | |
44bf2362 NC |
1567 | The sixth (emitted by recent SunPRO under Solaris) is |
1568 | .type SYM,[0-9] | |
1569 | where the integer is the STT_* value. | |
252b5132 RH |
1570 | */ |
1571 | ||
44bf2362 NC |
1572 | static char * |
1573 | obj_elf_type_name (char *cp) | |
1574 | { | |
1575 | char *p; | |
1576 | ||
1577 | p = input_line_pointer; | |
1578 | if (*input_line_pointer >= '0' | |
1579 | && *input_line_pointer <= '9') | |
1580 | { | |
1581 | while (*input_line_pointer >= '0' | |
1582 | && *input_line_pointer <= '9') | |
1583 | ++input_line_pointer; | |
1584 | *cp = *input_line_pointer; | |
1585 | *input_line_pointer = '\0'; | |
1586 | } | |
1587 | else | |
1588 | *cp = get_symbol_end (); | |
1589 | ||
1590 | return p; | |
1591 | } | |
1592 | ||
252b5132 | 1593 | static void |
dbe2df79 | 1594 | obj_elf_type (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1595 | { |
1596 | char *name; | |
1597 | char c; | |
1598 | int type; | |
1599 | const char *typename; | |
1600 | symbolS *sym; | |
904a31bf | 1601 | elf_symbol_type *elfsym; |
252b5132 RH |
1602 | |
1603 | name = input_line_pointer; | |
1604 | c = get_symbol_end (); | |
1605 | sym = symbol_find_or_make (name); | |
904a31bf | 1606 | elfsym = (elf_symbol_type *) symbol_get_bfdsym (sym); |
252b5132 RH |
1607 | *input_line_pointer = c; |
1608 | ||
1609 | SKIP_WHITESPACE (); | |
1610 | if (*input_line_pointer == ',') | |
1611 | ++input_line_pointer; | |
1612 | ||
1613 | SKIP_WHITESPACE (); | |
1614 | if ( *input_line_pointer == '#' | |
1615 | || *input_line_pointer == '@' | |
aa8c34c3 | 1616 | || *input_line_pointer == '"' |
252b5132 RH |
1617 | || *input_line_pointer == '%') |
1618 | ++input_line_pointer; | |
1619 | ||
44bf2362 | 1620 | typename = obj_elf_type_name (& c); |
252b5132 RH |
1621 | |
1622 | type = 0; | |
1623 | if (strcmp (typename, "function") == 0 | |
44bf2362 | 1624 | || strcmp (typename, "2") == 0 |
252b5132 RH |
1625 | || strcmp (typename, "STT_FUNC") == 0) |
1626 | type = BSF_FUNCTION; | |
1627 | else if (strcmp (typename, "object") == 0 | |
44bf2362 | 1628 | || strcmp (typename, "1") == 0 |
252b5132 RH |
1629 | || strcmp (typename, "STT_OBJECT") == 0) |
1630 | type = BSF_OBJECT; | |
b9734f35 | 1631 | else if (strcmp (typename, "tls_object") == 0 |
44bf2362 | 1632 | || strcmp (typename, "6") == 0 |
b9734f35 JJ |
1633 | || strcmp (typename, "STT_TLS") == 0) |
1634 | type = BSF_OBJECT | BSF_THREAD_LOCAL; | |
e7b9a8c1 | 1635 | else if (strcmp (typename, "notype") == 0 |
44bf2362 | 1636 | || strcmp (typename, "0") == 0 |
e7b9a8c1 L |
1637 | || strcmp (typename, "STT_NOTYPE") == 0) |
1638 | ; | |
504b7d20 | 1639 | else if (strcmp (typename, "common") == 0 |
44bf2362 | 1640 | || strcmp (typename, "5") == 0 |
504b7d20 NC |
1641 | || strcmp (typename, "STT_COMMON") == 0) |
1642 | { | |
1643 | type = BSF_OBJECT; | |
1644 | ||
1645 | if (! S_IS_COMMON (sym)) | |
1646 | { | |
1647 | if (S_IS_VOLATILE (sym)) | |
1648 | { | |
1649 | sym = symbol_clone (sym, 1); | |
1650 | S_SET_SEGMENT (sym, bfd_com_section_ptr); | |
1651 | S_SET_VALUE (sym, 0); | |
1652 | S_SET_EXTERNAL (sym); | |
1653 | symbol_set_frag (sym, &zero_address_frag); | |
1654 | S_CLEAR_VOLATILE (sym); | |
1655 | } | |
1656 | else if (S_IS_DEFINED (sym) || symbol_equated_p (sym)) | |
1657 | as_bad (_("symbol '%s' is already defined"), S_GET_NAME (sym)); | |
1658 | else | |
1659 | { | |
1660 | /* FIXME: Is it safe to just change the section ? */ | |
1661 | S_SET_SEGMENT (sym, bfd_com_section_ptr); | |
1662 | S_SET_VALUE (sym, 0); | |
1663 | S_SET_EXTERNAL (sym); | |
1664 | } | |
1665 | } | |
1666 | } | |
d8045f23 NC |
1667 | else if (strcmp (typename, "gnu_indirect_function") == 0 |
1668 | || strcmp (typename, "10") == 0 | |
1669 | || strcmp (typename, "STT_GNU_IFUNC") == 0) | |
1670 | { | |
1671 | const struct elf_backend_data *bed; | |
1672 | ||
1673 | bed = get_elf_backend_data (stdoutput); | |
1674 | if (!(bed->elf_osabi == ELFOSABI_LINUX | |
1675 | /* GNU/Linux is still using the default value 0. */ | |
1676 | || bed->elf_osabi == ELFOSABI_NONE)) | |
1677 | as_bad (_("symbol type \"%s\" is supported only by GNU targets"), | |
1678 | typename); | |
1679 | type = BSF_FUNCTION | BSF_GNU_INDIRECT_FUNCTION; | |
1680 | } | |
904a31bf AM |
1681 | #ifdef md_elf_symbol_type |
1682 | else if ((type = md_elf_symbol_type (typename, sym, elfsym)) != -1) | |
1683 | ; | |
1684 | #endif | |
252b5132 | 1685 | else |
6ce8b369 | 1686 | as_bad (_("unrecognized symbol type \"%s\""), typename); |
252b5132 RH |
1687 | |
1688 | *input_line_pointer = c; | |
1689 | ||
aa8c34c3 JE |
1690 | if (*input_line_pointer == '"') |
1691 | ++input_line_pointer; | |
1692 | ||
904a31bf | 1693 | elfsym->symbol.flags |= type; |
252b5132 RH |
1694 | |
1695 | demand_empty_rest_of_line (); | |
1696 | } | |
1697 | ||
1698 | static void | |
dbe2df79 | 1699 | obj_elf_ident (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1700 | { |
1701 | static segT comment_section; | |
1702 | segT old_section = now_seg; | |
1703 | int old_subsection = now_subseg; | |
1704 | ||
5f91fe03 ILT |
1705 | #ifdef md_flush_pending_output |
1706 | md_flush_pending_output (); | |
1707 | #endif | |
1708 | ||
252b5132 RH |
1709 | if (!comment_section) |
1710 | { | |
1711 | char *p; | |
1712 | comment_section = subseg_new (".comment", 0); | |
1713 | bfd_set_section_flags (stdoutput, comment_section, | |
1714 | SEC_READONLY | SEC_HAS_CONTENTS); | |
1715 | p = frag_more (1); | |
1716 | *p = 0; | |
1717 | } | |
1718 | else | |
1719 | subseg_set (comment_section, 0); | |
38a57ae7 | 1720 | stringer (8 + 1); |
252b5132 RH |
1721 | subseg_set (old_section, old_subsection); |
1722 | } | |
1723 | ||
1724 | #ifdef INIT_STAB_SECTION | |
1725 | ||
1726 | /* The first entry in a .stabs section is special. */ | |
1727 | ||
1728 | void | |
dbe2df79 | 1729 | obj_elf_init_stab_section (segT seg) |
252b5132 RH |
1730 | { |
1731 | char *file; | |
1732 | char *p; | |
1733 | char *stabstr_name; | |
1734 | unsigned int stroff; | |
1735 | ||
1736 | /* Force the section to align to a longword boundary. Without this, | |
1737 | UnixWare ar crashes. */ | |
1738 | bfd_set_section_alignment (stdoutput, seg, 2); | |
1739 | ||
bf514e21 | 1740 | /* Make space for this first symbol. */ |
252b5132 | 1741 | p = frag_more (12); |
bf514e21 | 1742 | /* Zero it out. */ |
252b5132 | 1743 | memset (p, 0, 12); |
dbe2df79 AM |
1744 | as_where (&file, NULL); |
1745 | stabstr_name = xmalloc (strlen (segment_name (seg)) + 4); | |
252b5132 RH |
1746 | strcpy (stabstr_name, segment_name (seg)); |
1747 | strcat (stabstr_name, "str"); | |
1748 | stroff = get_stab_string_offset (file, stabstr_name); | |
1749 | know (stroff == 1); | |
1750 | md_number_to_chars (p, stroff, 4); | |
1751 | seg_info (seg)->stabu.p = p; | |
1752 | } | |
1753 | ||
1754 | #endif | |
1755 | ||
1756 | /* Fill in the counts in the first entry in a .stabs section. */ | |
1757 | ||
1758 | static void | |
dbe2df79 | 1759 | adjust_stab_sections (bfd *abfd, asection *sec, void *xxx ATTRIBUTE_UNUSED) |
252b5132 RH |
1760 | { |
1761 | char *name; | |
1762 | asection *strsec; | |
1763 | char *p; | |
1764 | int strsz, nsyms; | |
1765 | ||
1766 | if (strncmp (".stab", sec->name, 5)) | |
1767 | return; | |
1768 | if (!strcmp ("str", sec->name + strlen (sec->name) - 3)) | |
1769 | return; | |
1770 | ||
dbe2df79 | 1771 | name = alloca (strlen (sec->name) + 4); |
252b5132 RH |
1772 | strcpy (name, sec->name); |
1773 | strcat (name, "str"); | |
1774 | strsec = bfd_get_section_by_name (abfd, name); | |
1775 | if (strsec) | |
1776 | strsz = bfd_section_size (abfd, strsec); | |
1777 | else | |
1778 | strsz = 0; | |
1779 | nsyms = bfd_section_size (abfd, sec) / 12 - 1; | |
1780 | ||
1781 | p = seg_info (sec)->stabu.p; | |
9c2799c2 | 1782 | gas_assert (p != 0); |
252b5132 | 1783 | |
dbe2df79 AM |
1784 | bfd_h_put_16 (abfd, nsyms, p + 6); |
1785 | bfd_h_put_32 (abfd, strsz, p + 8); | |
252b5132 RH |
1786 | } |
1787 | ||
1788 | #ifdef NEED_ECOFF_DEBUG | |
1789 | ||
1790 | /* This function is called by the ECOFF code. It is supposed to | |
1791 | record the external symbol information so that the backend can | |
1792 | write it out correctly. The ELF backend doesn't actually handle | |
1793 | this at the moment, so we do it ourselves. We save the information | |
1794 | in the symbol. */ | |
1795 | ||
ae4a729b AM |
1796 | #ifdef OBJ_MAYBE_ELF |
1797 | static | |
1798 | #endif | |
252b5132 | 1799 | void |
dbe2df79 | 1800 | elf_ecoff_set_ext (symbolS *sym, struct ecoff_extr *ext) |
252b5132 | 1801 | { |
dbe2df79 | 1802 | symbol_get_bfdsym (sym)->udata.p = ext; |
252b5132 RH |
1803 | } |
1804 | ||
1805 | /* This function is called by bfd_ecoff_debug_externals. It is | |
1806 | supposed to *EXT to the external symbol information, and return | |
1807 | whether the symbol should be used at all. */ | |
1808 | ||
b34976b6 | 1809 | static bfd_boolean |
dbe2df79 | 1810 | elf_get_extr (asymbol *sym, EXTR *ext) |
252b5132 RH |
1811 | { |
1812 | if (sym->udata.p == NULL) | |
b34976b6 | 1813 | return FALSE; |
252b5132 | 1814 | *ext = *(EXTR *) sym->udata.p; |
b34976b6 | 1815 | return TRUE; |
252b5132 RH |
1816 | } |
1817 | ||
1818 | /* This function is called by bfd_ecoff_debug_externals. It has | |
1819 | nothing to do for ELF. */ | |
1820 | ||
252b5132 | 1821 | static void |
dbe2df79 AM |
1822 | elf_set_index (asymbol *sym ATTRIBUTE_UNUSED, |
1823 | bfd_size_type indx ATTRIBUTE_UNUSED) | |
252b5132 RH |
1824 | { |
1825 | } | |
1826 | ||
1827 | #endif /* NEED_ECOFF_DEBUG */ | |
1828 | ||
1829 | void | |
dbe2df79 | 1830 | elf_frob_symbol (symbolS *symp, int *puntp) |
252b5132 | 1831 | { |
49309057 ILT |
1832 | struct elf_obj_sy *sy_obj; |
1833 | ||
252b5132 RH |
1834 | #ifdef NEED_ECOFF_DEBUG |
1835 | if (ECOFF_DEBUGGING) | |
1836 | ecoff_frob_symbol (symp); | |
1837 | #endif | |
1838 | ||
49309057 ILT |
1839 | sy_obj = symbol_get_obj (symp); |
1840 | ||
1841 | if (sy_obj->size != NULL) | |
252b5132 | 1842 | { |
49309057 | 1843 | switch (sy_obj->size->X_op) |
252b5132 RH |
1844 | { |
1845 | case O_subtract: | |
1846 | S_SET_SIZE (symp, | |
49309057 ILT |
1847 | (S_GET_VALUE (sy_obj->size->X_add_symbol) |
1848 | + sy_obj->size->X_add_number | |
1849 | - S_GET_VALUE (sy_obj->size->X_op_symbol))); | |
252b5132 RH |
1850 | break; |
1851 | case O_constant: | |
1852 | S_SET_SIZE (symp, | |
49309057 ILT |
1853 | (S_GET_VALUE (sy_obj->size->X_add_symbol) |
1854 | + sy_obj->size->X_add_number)); | |
252b5132 RH |
1855 | break; |
1856 | default: | |
1857 | as_bad (_(".size expression too complicated to fix up")); | |
1858 | break; | |
1859 | } | |
49309057 ILT |
1860 | free (sy_obj->size); |
1861 | sy_obj->size = NULL; | |
252b5132 RH |
1862 | } |
1863 | ||
49309057 | 1864 | if (sy_obj->versioned_name != NULL) |
252b5132 | 1865 | { |
79082ff0 L |
1866 | char *p; |
1867 | ||
1868 | p = strchr (sy_obj->versioned_name, ELF_VER_CHR); | |
1869 | know (p != NULL); | |
1870 | ||
252b5132 RH |
1871 | /* This symbol was given a new name with the .symver directive. |
1872 | ||
13c56984 AM |
1873 | If this is an external reference, just rename the symbol to |
1874 | include the version string. This will make the relocs be | |
1875 | against the correct versioned symbol. | |
252b5132 RH |
1876 | |
1877 | If this is a definition, add an alias. FIXME: Using an alias | |
1878 | will permit the debugging information to refer to the right | |
1879 | symbol. However, it's not clear whether it is the best | |
1880 | approach. */ | |
1881 | ||
1882 | if (! S_IS_DEFINED (symp)) | |
1883 | { | |
252b5132 | 1884 | /* Verify that the name isn't using the @@ syntax--this is |
13c56984 AM |
1885 | reserved for definitions of the default version to link |
1886 | against. */ | |
252b5132 RH |
1887 | if (p[1] == ELF_VER_CHR) |
1888 | { | |
1889 | as_bad (_("invalid attempt to declare external version name as default in symbol `%s'"), | |
49309057 | 1890 | sy_obj->versioned_name); |
b34976b6 | 1891 | *puntp = TRUE; |
252b5132 | 1892 | } |
49309057 | 1893 | S_SET_NAME (symp, sy_obj->versioned_name); |
252b5132 RH |
1894 | } |
1895 | else | |
1896 | { | |
dbe2df79 | 1897 | if (p[1] == ELF_VER_CHR && p[2] == ELF_VER_CHR) |
79082ff0 L |
1898 | { |
1899 | size_t l; | |
1900 | ||
1901 | /* The @@@ syntax is a special case. It renames the | |
1902 | symbol name to versioned_name with one `@' removed. */ | |
1903 | l = strlen (&p[3]) + 1; | |
dbe2df79 | 1904 | memmove (&p[2], &p[3], l); |
79082ff0 L |
1905 | S_SET_NAME (symp, sy_obj->versioned_name); |
1906 | } | |
1907 | else | |
1908 | { | |
1909 | symbolS *symp2; | |
252b5132 | 1910 | |
79082ff0 L |
1911 | /* FIXME: Creating a new symbol here is risky. We're |
1912 | in the final loop over the symbol table. We can | |
1913 | get away with it only because the symbol goes to | |
1914 | the end of the list, where the loop will still see | |
1915 | it. It would probably be better to do this in | |
1916 | obj_frob_file_before_adjust. */ | |
252b5132 | 1917 | |
79082ff0 | 1918 | symp2 = symbol_find_or_make (sy_obj->versioned_name); |
252b5132 | 1919 | |
79082ff0 | 1920 | /* Now we act as though we saw symp2 = sym. */ |
252b5132 | 1921 | |
79082ff0 | 1922 | S_SET_SEGMENT (symp2, S_GET_SEGMENT (symp)); |
252b5132 | 1923 | |
79082ff0 L |
1924 | /* Subtracting out the frag address here is a hack |
1925 | because we are in the middle of the final loop. */ | |
1926 | S_SET_VALUE (symp2, | |
1927 | (S_GET_VALUE (symp) | |
1928 | - symbol_get_frag (symp)->fr_address)); | |
252b5132 | 1929 | |
79082ff0 | 1930 | symbol_set_frag (symp2, symbol_get_frag (symp)); |
252b5132 | 1931 | |
79082ff0 L |
1932 | /* This will copy over the size information. */ |
1933 | copy_symbol_attributes (symp2, symp); | |
252b5132 | 1934 | |
26eb4093 JJ |
1935 | S_SET_OTHER (symp2, S_GET_OTHER (symp)); |
1936 | ||
79082ff0 L |
1937 | if (S_IS_WEAK (symp)) |
1938 | S_SET_WEAK (symp2); | |
252b5132 | 1939 | |
79082ff0 L |
1940 | if (S_IS_EXTERNAL (symp)) |
1941 | S_SET_EXTERNAL (symp2); | |
1942 | } | |
252b5132 RH |
1943 | } |
1944 | } | |
1945 | ||
1946 | /* Double check weak symbols. */ | |
49309057 | 1947 | if (S_IS_WEAK (symp)) |
252b5132 RH |
1948 | { |
1949 | if (S_IS_COMMON (symp)) | |
6ce8b369 | 1950 | as_bad (_("symbol `%s' can not be both weak and common"), |
252b5132 RH |
1951 | S_GET_NAME (symp)); |
1952 | } | |
1953 | ||
1954 | #ifdef TC_MIPS | |
1955 | /* The Irix 5 and 6 assemblers set the type of any common symbol and | |
1956 | any undefined non-function symbol to STT_OBJECT. We try to be | |
1957 | compatible, since newer Irix 5 and 6 linkers care. However, we | |
1958 | only set undefined symbols to be STT_OBJECT if we are on Irix, | |
1959 | because that is the only time gcc will generate the necessary | |
1960 | .global directives to mark functions. */ | |
1961 | ||
1962 | if (S_IS_COMMON (symp)) | |
49309057 | 1963 | symbol_get_bfdsym (symp)->flags |= BSF_OBJECT; |
252b5132 RH |
1964 | |
1965 | if (strstr (TARGET_OS, "irix") != NULL | |
49309057 ILT |
1966 | && ! S_IS_DEFINED (symp) |
1967 | && (symbol_get_bfdsym (symp)->flags & BSF_FUNCTION) == 0) | |
1968 | symbol_get_bfdsym (symp)->flags |= BSF_OBJECT; | |
252b5132 | 1969 | #endif |
252b5132 RH |
1970 | } |
1971 | ||
060adf0e AM |
1972 | struct group_list |
1973 | { | |
1974 | asection **head; /* Section lists. */ | |
1975 | unsigned int *elt_count; /* Number of sections in each list. */ | |
1976 | unsigned int num_group; /* Number of lists. */ | |
1977 | }; | |
1978 | ||
1979 | /* Called via bfd_map_over_sections. If SEC is a member of a group, | |
1980 | add it to a list of sections belonging to the group. INF is a | |
1981 | pointer to a struct group_list, which is where we store the head of | |
1982 | each list. */ | |
1983 | ||
1984 | static void | |
dbe2df79 | 1985 | build_group_lists (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *inf) |
060adf0e | 1986 | { |
dbe2df79 | 1987 | struct group_list *list = inf; |
aa1f4858 | 1988 | const char *group_name = elf_group_name (sec); |
060adf0e AM |
1989 | unsigned int i; |
1990 | ||
1991 | if (group_name == NULL) | |
1992 | return; | |
1993 | ||
1994 | /* If this group already has a list, add the section to the head of | |
1995 | the list. */ | |
1996 | for (i = 0; i < list->num_group; i++) | |
1997 | { | |
aa1f4858 | 1998 | if (strcmp (group_name, elf_group_name (list->head[i])) == 0) |
060adf0e | 1999 | { |
aa1f4858 | 2000 | elf_next_in_group (sec) = list->head[i]; |
060adf0e AM |
2001 | list->head[i] = sec; |
2002 | list->elt_count[i] += 1; | |
2003 | return; | |
2004 | } | |
2005 | } | |
2006 | ||
2007 | /* New group. Make the arrays bigger in chunks to minimize calls to | |
2008 | realloc. */ | |
2009 | i = list->num_group; | |
2010 | if ((i & 127) == 0) | |
2011 | { | |
2012 | unsigned int newsize = i + 128; | |
2013 | list->head = xrealloc (list->head, newsize * sizeof (*list->head)); | |
2014 | list->elt_count = xrealloc (list->elt_count, | |
2015 | newsize * sizeof (*list->elt_count)); | |
2016 | } | |
2017 | list->head[i] = sec; | |
2018 | list->elt_count[i] = 1; | |
2019 | list->num_group += 1; | |
2020 | } | |
2021 | ||
252b5132 | 2022 | void |
dbe2df79 | 2023 | elf_frob_file (void) |
252b5132 | 2024 | { |
060adf0e AM |
2025 | struct group_list list; |
2026 | unsigned int i; | |
2027 | ||
dbe2df79 | 2028 | bfd_map_over_sections (stdoutput, adjust_stab_sections, NULL); |
252b5132 | 2029 | |
060adf0e AM |
2030 | /* Go find section groups. */ |
2031 | list.num_group = 0; | |
2032 | list.head = NULL; | |
2033 | list.elt_count = NULL; | |
dbe2df79 | 2034 | bfd_map_over_sections (stdoutput, build_group_lists, &list); |
060adf0e AM |
2035 | |
2036 | /* Make the SHT_GROUP sections that describe each section group. We | |
2037 | can't set up the section contents here yet, because elf section | |
2038 | indices have yet to be calculated. elf.c:set_group_contents does | |
2039 | the rest of the work. */ | |
2040 | for (i = 0; i < list.num_group; i++) | |
2041 | { | |
aa1f4858 | 2042 | const char *group_name = elf_group_name (list.head[i]); |
9758f3fc | 2043 | const char *sec_name; |
060adf0e AM |
2044 | asection *s; |
2045 | flagword flags; | |
9758f3fc AM |
2046 | struct symbol *sy; |
2047 | int has_sym; | |
587aac4e | 2048 | bfd_size_type size; |
060adf0e | 2049 | |
060adf0e | 2050 | flags = SEC_READONLY | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_GROUP; |
d2dab548 | 2051 | for (s = list.head[i]; s != NULL; s = elf_next_in_group (s)) |
68bfbfcc | 2052 | if ((s->flags ^ flags) & SEC_LINK_ONCE) |
d2dab548 AM |
2053 | { |
2054 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
2055 | if (s != list.head[i]) | |
2056 | { | |
2057 | as_warn (_("assuming all members of group `%s' are COMDAT"), | |
2058 | group_name); | |
2059 | break; | |
2060 | } | |
2061 | } | |
2062 | ||
9758f3fc AM |
2063 | sec_name = group_name; |
2064 | sy = symbol_find_exact (group_name); | |
2065 | has_sym = 0; | |
2066 | if (sy != NULL | |
2067 | && (sy == symbol_lastP | |
2068 | || (sy->sy_next != NULL | |
2069 | && sy->sy_next->sy_previous == sy))) | |
2070 | { | |
2071 | has_sym = 1; | |
2072 | sec_name = ".group"; | |
2073 | } | |
2074 | s = subseg_force_new (sec_name, 0); | |
060adf0e AM |
2075 | if (s == NULL |
2076 | || !bfd_set_section_flags (stdoutput, s, flags) | |
2077 | || !bfd_set_section_alignment (stdoutput, s, 2)) | |
2078 | { | |
2079 | as_fatal (_("can't create group: %s"), | |
2080 | bfd_errmsg (bfd_get_error ())); | |
2081 | } | |
2f89ff8d | 2082 | elf_section_type (s) = SHT_GROUP; |
060adf0e | 2083 | |
aa1f4858 AM |
2084 | /* Pass a pointer to the first section in this group. */ |
2085 | elf_next_in_group (s) = list.head[i]; | |
9758f3fc AM |
2086 | if (has_sym) |
2087 | elf_group_id (s) = sy->bsym; | |
060adf0e | 2088 | |
587aac4e AM |
2089 | size = 4 * (list.elt_count[i] + 1); |
2090 | bfd_set_section_size (stdoutput, s, size); | |
b7712f8d | 2091 | s->contents = (unsigned char *) frag_more (size); |
060adf0e | 2092 | frag_now->fr_fix = frag_now_fix_octets (); |
07cb2078 | 2093 | frag_wane (frag_now); |
060adf0e AM |
2094 | } |
2095 | ||
252b5132 RH |
2096 | #ifdef elf_tc_final_processing |
2097 | elf_tc_final_processing (); | |
2098 | #endif | |
2099 | } | |
2100 | ||
4a1805b1 | 2101 | /* It removes any unneeded versioned symbols from the symbol table. */ |
339681c0 L |
2102 | |
2103 | void | |
dbe2df79 | 2104 | elf_frob_file_before_adjust (void) |
339681c0 L |
2105 | { |
2106 | if (symbol_rootP) | |
2107 | { | |
2108 | symbolS *symp; | |
2109 | ||
2110 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) | |
00e6e13d | 2111 | if (!S_IS_DEFINED (symp)) |
79082ff0 | 2112 | { |
00e6e13d | 2113 | if (symbol_get_obj (symp)->versioned_name) |
79082ff0 L |
2114 | { |
2115 | char *p; | |
2116 | ||
2117 | /* The @@@ syntax is a special case. If the symbol is | |
2118 | not defined, 2 `@'s will be removed from the | |
2119 | versioned_name. */ | |
2120 | ||
2121 | p = strchr (symbol_get_obj (symp)->versioned_name, | |
2122 | ELF_VER_CHR); | |
2123 | know (p != NULL); | |
dbe2df79 | 2124 | if (p[1] == ELF_VER_CHR && p[2] == ELF_VER_CHR) |
79082ff0 L |
2125 | { |
2126 | size_t l = strlen (&p[3]) + 1; | |
dbe2df79 | 2127 | memmove (&p[1], &p[3], l); |
79082ff0 L |
2128 | } |
2129 | if (symbol_used_p (symp) == 0 | |
2130 | && symbol_used_in_reloc_p (symp) == 0) | |
2131 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
2132 | } | |
00e6e13d JJ |
2133 | |
2134 | /* If there was .weak foo, but foo was neither defined nor | |
2135 | used anywhere, remove it. */ | |
2136 | ||
2137 | else if (S_IS_WEAK (symp) | |
2138 | && symbol_used_p (symp) == 0 | |
2139 | && symbol_used_in_reloc_p (symp) == 0) | |
2140 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
79082ff0 | 2141 | } |
339681c0 L |
2142 | } |
2143 | } | |
2144 | ||
252b5132 RH |
2145 | /* It is required that we let write_relocs have the opportunity to |
2146 | optimize away fixups before output has begun, since it is possible | |
2147 | to eliminate all fixups for a section and thus we never should | |
2148 | have generated the relocation section. */ | |
2149 | ||
2150 | void | |
dbe2df79 | 2151 | elf_frob_file_after_relocs (void) |
252b5132 RH |
2152 | { |
2153 | #ifdef NEED_ECOFF_DEBUG | |
2154 | if (ECOFF_DEBUGGING) | |
2155 | /* Generate the ECOFF debugging information. */ | |
2156 | { | |
2157 | const struct ecoff_debug_swap *debug_swap; | |
2158 | struct ecoff_debug_info debug; | |
2159 | char *buf; | |
2160 | asection *sec; | |
2161 | ||
2162 | debug_swap | |
2163 | = get_elf_backend_data (stdoutput)->elf_backend_ecoff_debug_swap; | |
dbe2df79 | 2164 | know (debug_swap != NULL); |
252b5132 RH |
2165 | ecoff_build_debug (&debug.symbolic_header, &buf, debug_swap); |
2166 | ||
2167 | /* Set up the pointers in debug. */ | |
2168 | #define SET(ptr, offset, type) \ | |
2169 | debug.ptr = (type) (buf + debug.symbolic_header.offset) | |
2170 | ||
2171 | SET (line, cbLineOffset, unsigned char *); | |
dbe2df79 AM |
2172 | SET (external_dnr, cbDnOffset, void *); |
2173 | SET (external_pdr, cbPdOffset, void *); | |
2174 | SET (external_sym, cbSymOffset, void *); | |
2175 | SET (external_opt, cbOptOffset, void *); | |
252b5132 RH |
2176 | SET (external_aux, cbAuxOffset, union aux_ext *); |
2177 | SET (ss, cbSsOffset, char *); | |
dbe2df79 AM |
2178 | SET (external_fdr, cbFdOffset, void *); |
2179 | SET (external_rfd, cbRfdOffset, void *); | |
252b5132 RH |
2180 | /* ssext and external_ext are set up just below. */ |
2181 | ||
2182 | #undef SET | |
2183 | ||
2184 | /* Set up the external symbols. */ | |
2185 | debug.ssext = debug.ssext_end = NULL; | |
2186 | debug.external_ext = debug.external_ext_end = NULL; | |
b34976b6 | 2187 | if (! bfd_ecoff_debug_externals (stdoutput, &debug, debug_swap, TRUE, |
252b5132 | 2188 | elf_get_extr, elf_set_index)) |
6ce8b369 | 2189 | as_fatal (_("failed to set up debugging information: %s"), |
252b5132 RH |
2190 | bfd_errmsg (bfd_get_error ())); |
2191 | ||
2192 | sec = bfd_get_section_by_name (stdoutput, ".mdebug"); | |
9c2799c2 | 2193 | gas_assert (sec != NULL); |
252b5132 | 2194 | |
b34976b6 | 2195 | know (!stdoutput->output_has_begun); |
252b5132 RH |
2196 | |
2197 | /* We set the size of the section, call bfd_set_section_contents | |
2198 | to force the ELF backend to allocate a file position, and then | |
2199 | write out the data. FIXME: Is this really the best way to do | |
2200 | this? */ | |
587aac4e AM |
2201 | bfd_set_section_size |
2202 | (stdoutput, sec, bfd_ecoff_debug_size (stdoutput, &debug, debug_swap)); | |
252b5132 | 2203 | |
5f91fe03 | 2204 | /* Pass BUF to bfd_set_section_contents because this will |
13c56984 AM |
2205 | eventually become a call to fwrite, and ISO C prohibits |
2206 | passing a NULL pointer to a stdio function even if the | |
2207 | pointer will not be used. */ | |
dbe2df79 | 2208 | if (! bfd_set_section_contents (stdoutput, sec, buf, 0, 0)) |
6ce8b369 | 2209 | as_fatal (_("can't start writing .mdebug section: %s"), |
252b5132 RH |
2210 | bfd_errmsg (bfd_get_error ())); |
2211 | ||
b34976b6 | 2212 | know (stdoutput->output_has_begun); |
252b5132 RH |
2213 | know (sec->filepos != 0); |
2214 | ||
2215 | if (! bfd_ecoff_write_debug (stdoutput, &debug, debug_swap, | |
2216 | sec->filepos)) | |
6ce8b369 | 2217 | as_fatal (_("could not write .mdebug section: %s"), |
252b5132 RH |
2218 | bfd_errmsg (bfd_get_error ())); |
2219 | } | |
2220 | #endif /* NEED_ECOFF_DEBUG */ | |
2221 | } | |
2222 | ||
2223 | #ifdef SCO_ELF | |
2224 | ||
aaa2624b | 2225 | /* Heavily plagiarized from obj_elf_version. The idea is to emit the |
252b5132 RH |
2226 | SCO specific identifier in the .notes section to satisfy the SCO |
2227 | linker. | |
2228 | ||
2229 | This looks more complicated than it really is. As opposed to the | |
2230 | "obvious" solution, this should handle the cross dev cases | |
2231 | correctly. (i.e, hosting on a 64 bit big endian processor, but | |
2232 | generating SCO Elf code) Efficiency isn't a concern, as there | |
2233 | should be exactly one of these sections per object module. | |
2234 | ||
2235 | SCO OpenServer 5 identifies it's ELF modules with a standard ELF | |
2236 | .note section. | |
2237 | ||
fa306131 AM |
2238 | int_32 namesz = 4 ; Name size |
2239 | int_32 descsz = 12 ; Descriptive information | |
2240 | int_32 type = 1 ; | |
2241 | char name[4] = "SCO" ; Originator name ALWAYS SCO + NULL | |
252b5132 RH |
2242 | int_32 version = (major ver # << 16) | version of tools ; |
2243 | int_32 source = (tool_id << 16 ) | 1 ; | |
2244 | int_32 info = 0 ; These are set by the SCO tools, but we | |
13c56984 | 2245 | don't know enough about the source |
252b5132 RH |
2246 | environment to set them. SCO ld currently |
2247 | ignores them, and recommends we set them | |
2248 | to zero. */ | |
2249 | ||
2250 | #define SCO_MAJOR_VERSION 0x1 | |
2251 | #define SCO_MINOR_VERSION 0x1 | |
2252 | ||
2253 | void | |
dbe2df79 | 2254 | sco_id (void) |
252b5132 RH |
2255 | { |
2256 | ||
2257 | char *name; | |
2258 | unsigned int c; | |
2259 | char ch; | |
2260 | char *p; | |
2261 | asection *seg = now_seg; | |
2262 | subsegT subseg = now_subseg; | |
2263 | Elf_Internal_Note i_note; | |
2264 | Elf_External_Note e_note; | |
dbe2df79 | 2265 | asection *note_secp = NULL; |
252b5132 RH |
2266 | int i, len; |
2267 | ||
2268 | /* create the .note section */ | |
2269 | ||
2270 | note_secp = subseg_new (".note", 0); | |
2271 | bfd_set_section_flags (stdoutput, | |
2272 | note_secp, | |
2273 | SEC_HAS_CONTENTS | SEC_READONLY); | |
2274 | ||
2275 | /* process the version string */ | |
2276 | ||
fa306131 | 2277 | i_note.namesz = 4; |
252b5132 RH |
2278 | i_note.descsz = 12; /* 12 descriptive bytes */ |
2279 | i_note.type = NT_VERSION; /* Contains a version string */ | |
2280 | ||
2281 | p = frag_more (sizeof (i_note.namesz)); | |
dbe2df79 | 2282 | md_number_to_chars (p, i_note.namesz, 4); |
252b5132 RH |
2283 | |
2284 | p = frag_more (sizeof (i_note.descsz)); | |
dbe2df79 | 2285 | md_number_to_chars (p, i_note.descsz, 4); |
252b5132 RH |
2286 | |
2287 | p = frag_more (sizeof (i_note.type)); | |
dbe2df79 | 2288 | md_number_to_chars (p, i_note.type, 4); |
252b5132 RH |
2289 | |
2290 | p = frag_more (4); | |
fa306131 | 2291 | strcpy (p, "SCO"); |
252b5132 RH |
2292 | |
2293 | /* Note: this is the version number of the ELF we're representing */ | |
2294 | p = frag_more (4); | |
2295 | md_number_to_chars (p, (SCO_MAJOR_VERSION << 16) | (SCO_MINOR_VERSION), 4); | |
2296 | ||
2297 | /* Here, we pick a magic number for ourselves (yes, I "registered" | |
2298 | it with SCO. The bottom bit shows that we are compat with the | |
2299 | SCO ABI. */ | |
2300 | p = frag_more (4); | |
2301 | md_number_to_chars (p, 0x4c520000 | 0x0001, 4); | |
2302 | ||
2303 | /* If we knew (or cared) what the source language options were, we'd | |
2304 | fill them in here. SCO has given us permission to ignore these | |
2305 | and just set them to zero. */ | |
2306 | p = frag_more (4); | |
2307 | md_number_to_chars (p, 0x0000, 4); | |
fa306131 | 2308 | |
252b5132 RH |
2309 | frag_align (2, 0, 0); |
2310 | ||
2311 | /* We probably can't restore the current segment, for there likely | |
2312 | isn't one yet... */ | |
2313 | if (seg && subseg) | |
2314 | subseg_set (seg, subseg); | |
2315 | ||
2316 | } | |
2317 | ||
2318 | #endif /* SCO_ELF */ | |
2319 | ||
5110c57e | 2320 | static int |
dbe2df79 | 2321 | elf_separate_stab_sections (void) |
5110c57e HPN |
2322 | { |
2323 | #ifdef NEED_ECOFF_DEBUG | |
2324 | return (!ECOFF_DEBUGGING); | |
2325 | #else | |
2326 | return 1; | |
2327 | #endif | |
2328 | } | |
2329 | ||
2330 | static void | |
dbe2df79 | 2331 | elf_init_stab_section (segT seg) |
5110c57e HPN |
2332 | { |
2333 | #ifdef NEED_ECOFF_DEBUG | |
2334 | if (!ECOFF_DEBUGGING) | |
2335 | #endif | |
2336 | obj_elf_init_stab_section (seg); | |
2337 | } | |
2338 | ||
252b5132 RH |
2339 | const struct format_ops elf_format_ops = |
2340 | { | |
2341 | bfd_target_elf_flavour, | |
4c63da97 AM |
2342 | 0, /* dfl_leading_underscore */ |
2343 | 1, /* emit_section_symbols */ | |
5110c57e HPN |
2344 | elf_begin, |
2345 | elf_file_symbol, | |
252b5132 RH |
2346 | elf_frob_symbol, |
2347 | elf_frob_file, | |
339681c0 | 2348 | elf_frob_file_before_adjust, |
a161fe53 | 2349 | 0, /* obj_frob_file_before_fix */ |
252b5132 RH |
2350 | elf_frob_file_after_relocs, |
2351 | elf_s_get_size, elf_s_set_size, | |
2352 | elf_s_get_align, elf_s_set_align, | |
4c63da97 | 2353 | elf_s_get_other, |
5110c57e | 2354 | elf_s_set_other, |
4c63da97 | 2355 | 0, /* s_get_desc */ |
5110c57e HPN |
2356 | 0, /* s_set_desc */ |
2357 | 0, /* s_get_type */ | |
2358 | 0, /* s_set_type */ | |
252b5132 RH |
2359 | elf_copy_symbol_attributes, |
2360 | #ifdef NEED_ECOFF_DEBUG | |
2361 | ecoff_generate_asm_lineno, | |
2362 | ecoff_stab, | |
2363 | #else | |
4c63da97 AM |
2364 | 0, /* generate_asm_lineno */ |
2365 | 0, /* process_stab */ | |
252b5132 | 2366 | #endif |
5110c57e HPN |
2367 | elf_separate_stab_sections, |
2368 | elf_init_stab_section, | |
252b5132 RH |
2369 | elf_sec_sym_ok_for_reloc, |
2370 | elf_pop_insert, | |
2371 | #ifdef NEED_ECOFF_DEBUG | |
2372 | elf_ecoff_set_ext, | |
2373 | #else | |
4c63da97 | 2374 | 0, /* ecoff_set_ext */ |
252b5132 | 2375 | #endif |
4c63da97 | 2376 | elf_obj_read_begin_hook, |
5110c57e | 2377 | elf_obj_symbol_new_hook |
252b5132 | 2378 | }; |