Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* ELF object file format |
cc8a6dd0 | 2 | Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
5ab504f9 | 3 | 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. |
252b5132 RH |
4 | |
5 | This file is part of GAS, the GNU Assembler. | |
6 | ||
7 | GAS is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as | |
9 | published by the Free Software Foundation; either version 2, | |
10 | or (at your option) any later version. | |
11 | ||
12 | GAS is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
15 | the GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GAS; see the file COPYING. If not, write to the Free | |
4b4da160 NC |
19 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
20 | 02110-1301, USA. */ | |
252b5132 RH |
21 | |
22 | #define OBJ_HEADER "obj-elf.h" | |
23 | #include "as.h" | |
3882b010 | 24 | #include "safe-ctype.h" |
252b5132 RH |
25 | #include "subsegs.h" |
26 | #include "obstack.h" | |
9758f3fc | 27 | #include "struc-symbol.h" |
87ccc1b0 | 28 | #include "dwarf2dbg.h" |
252b5132 RH |
29 | |
30 | #ifndef ECOFF_DEBUGGING | |
31 | #define ECOFF_DEBUGGING 0 | |
32 | #else | |
33 | #define NEED_ECOFF_DEBUG | |
34 | #endif | |
35 | ||
36 | #ifdef NEED_ECOFF_DEBUG | |
37 | #include "ecoff.h" | |
38 | #endif | |
39 | ||
40 | #ifdef TC_ALPHA | |
41 | #include "elf/alpha.h" | |
42 | #endif | |
43 | ||
44 | #ifdef TC_MIPS | |
45 | #include "elf/mips.h" | |
46 | #endif | |
47 | ||
48 | #ifdef TC_PPC | |
49 | #include "elf/ppc.h" | |
50 | #endif | |
51 | ||
5b93d8bb AM |
52 | #ifdef TC_I370 |
53 | #include "elf/i370.h" | |
54 | #endif | |
55 | ||
3b22753a L |
56 | #ifdef TC_I386 |
57 | #include "elf/x86-64.h" | |
58 | #endif | |
59 | ||
280d71bf DB |
60 | #ifdef TC_MEP |
61 | #include "elf/mep.h" | |
62 | #endif | |
63 | ||
dbe2df79 AM |
64 | static void obj_elf_line (int); |
65 | static void obj_elf_size (int); | |
66 | static void obj_elf_type (int); | |
67 | static void obj_elf_ident (int); | |
68 | static void obj_elf_weak (int); | |
69 | static void obj_elf_local (int); | |
70 | static void obj_elf_visibility (int); | |
71 | static void obj_elf_symver (int); | |
72 | static void obj_elf_subsection (int); | |
73 | static void obj_elf_popsection (int); | |
74 | static void obj_elf_tls_common (int); | |
13c56984 | 75 | static void obj_elf_lcomm (int); |
8fe53b44 | 76 | static void obj_elf_struct (int); |
252b5132 RH |
77 | |
78 | static const pseudo_typeS elf_pseudo_table[] = | |
79 | { | |
80 | {"comm", obj_elf_common, 0}, | |
9be1cda6 | 81 | {"common", obj_elf_common, 1}, |
252b5132 | 82 | {"ident", obj_elf_ident, 0}, |
13c56984 | 83 | {"lcomm", obj_elf_lcomm, 0}, |
252b5132 RH |
84 | {"local", obj_elf_local, 0}, |
85 | {"previous", obj_elf_previous, 0}, | |
86 | {"section", obj_elf_section, 0}, | |
87 | {"section.s", obj_elf_section, 0}, | |
88 | {"sect", obj_elf_section, 0}, | |
89 | {"sect.s", obj_elf_section, 0}, | |
9de8d8f1 RH |
90 | {"pushsection", obj_elf_section, 1}, |
91 | {"popsection", obj_elf_popsection, 0}, | |
252b5132 RH |
92 | {"size", obj_elf_size, 0}, |
93 | {"type", obj_elf_type, 0}, | |
94 | {"version", obj_elf_version, 0}, | |
95 | {"weak", obj_elf_weak, 0}, | |
96 | ||
bf514e21 | 97 | /* These define symbol visibility. */ |
2e13b764 NC |
98 | {"internal", obj_elf_visibility, STV_INTERNAL}, |
99 | {"hidden", obj_elf_visibility, STV_HIDDEN}, | |
100 | {"protected", obj_elf_visibility, STV_PROTECTED}, | |
101 | ||
252b5132 RH |
102 | /* These are used for stabs-in-elf configurations. */ |
103 | {"line", obj_elf_line, 0}, | |
104 | ||
105 | /* This is a GNU extension to handle symbol versions. */ | |
106 | {"symver", obj_elf_symver, 0}, | |
107 | ||
108 | /* A GNU extension to change subsection only. */ | |
109 | {"subsection", obj_elf_subsection, 0}, | |
110 | ||
111 | /* These are GNU extensions to aid in garbage collecting C++ vtables. */ | |
dbe2df79 AM |
112 | {"vtable_inherit", (void (*) (int)) &obj_elf_vtable_inherit, 0}, |
113 | {"vtable_entry", (void (*) (int)) &obj_elf_vtable_entry, 0}, | |
252b5132 | 114 | |
bf514e21 | 115 | /* These are used for dwarf. */ |
252b5132 RH |
116 | {"2byte", cons, 2}, |
117 | {"4byte", cons, 4}, | |
118 | {"8byte", cons, 8}, | |
87ccc1b0 | 119 | /* These are used for dwarf2. */ |
dbe2df79 | 120 | { "file", (void (*) (int)) dwarf2_directive_file, 0 }, |
87ccc1b0 | 121 | { "loc", dwarf2_directive_loc, 0 }, |
07a53e5c | 122 | { "loc_mark_labels", dwarf2_directive_loc_mark_labels, 0 }, |
252b5132 RH |
123 | |
124 | /* We need to trap the section changing calls to handle .previous. */ | |
125 | {"data", obj_elf_data, 0}, | |
8fe53b44 JB |
126 | {"offset", obj_elf_struct, 0}, |
127 | {"struct", obj_elf_struct, 0}, | |
252b5132 RH |
128 | {"text", obj_elf_text, 0}, |
129 | ||
13ae64f3 JJ |
130 | {"tls_common", obj_elf_tls_common, 0}, |
131 | ||
252b5132 | 132 | /* End sentinel. */ |
ab9da554 | 133 | {NULL, NULL, 0}, |
252b5132 RH |
134 | }; |
135 | ||
136 | static const pseudo_typeS ecoff_debug_pseudo_table[] = | |
137 | { | |
138 | #ifdef NEED_ECOFF_DEBUG | |
139 | /* COFF style debugging information for ECOFF. .ln is not used; .loc | |
140 | is used instead. */ | |
141 | { "def", ecoff_directive_def, 0 }, | |
142 | { "dim", ecoff_directive_dim, 0 }, | |
143 | { "endef", ecoff_directive_endef, 0 }, | |
144 | { "file", ecoff_directive_file, 0 }, | |
145 | { "scl", ecoff_directive_scl, 0 }, | |
146 | { "tag", ecoff_directive_tag, 0 }, | |
147 | { "val", ecoff_directive_val, 0 }, | |
148 | ||
149 | /* COFF debugging requires pseudo-ops .size and .type, but ELF | |
150 | already has meanings for those. We use .esize and .etype | |
151 | instead. These are only generated by gcc anyhow. */ | |
152 | { "esize", ecoff_directive_size, 0 }, | |
153 | { "etype", ecoff_directive_type, 0 }, | |
154 | ||
155 | /* ECOFF specific debugging information. */ | |
156 | { "begin", ecoff_directive_begin, 0 }, | |
157 | { "bend", ecoff_directive_bend, 0 }, | |
158 | { "end", ecoff_directive_end, 0 }, | |
159 | { "ent", ecoff_directive_ent, 0 }, | |
160 | { "fmask", ecoff_directive_fmask, 0 }, | |
161 | { "frame", ecoff_directive_frame, 0 }, | |
162 | { "loc", ecoff_directive_loc, 0 }, | |
163 | { "mask", ecoff_directive_mask, 0 }, | |
164 | ||
165 | /* Other ECOFF directives. */ | |
166 | { "extern", ecoff_directive_extern, 0 }, | |
167 | ||
168 | /* These are used on Irix. I don't know how to implement them. */ | |
169 | { "alias", s_ignore, 0 }, | |
170 | { "bgnb", s_ignore, 0 }, | |
171 | { "endb", s_ignore, 0 }, | |
172 | { "lab", s_ignore, 0 }, | |
173 | { "noalias", s_ignore, 0 }, | |
174 | { "verstamp", s_ignore, 0 }, | |
175 | { "vreg", s_ignore, 0 }, | |
176 | #endif | |
177 | ||
ab9da554 | 178 | {NULL, NULL, 0} /* end sentinel */ |
252b5132 RH |
179 | }; |
180 | ||
181 | #undef NO_RELOC | |
182 | #include "aout/aout64.h" | |
183 | ||
184 | /* This is called when the assembler starts. */ | |
185 | ||
3b22753a L |
186 | asection *elf_com_section_ptr; |
187 | ||
252b5132 | 188 | void |
dbe2df79 | 189 | elf_begin (void) |
252b5132 | 190 | { |
dbe2df79 AM |
191 | asection *s; |
192 | ||
252b5132 | 193 | /* Add symbols for the known sections to the symbol table. */ |
dbe2df79 AM |
194 | s = bfd_get_section_by_name (stdoutput, TEXT_SECTION_NAME); |
195 | symbol_table_insert (section_symbol (s)); | |
196 | s = bfd_get_section_by_name (stdoutput, DATA_SECTION_NAME); | |
197 | symbol_table_insert (section_symbol (s)); | |
198 | s = bfd_get_section_by_name (stdoutput, BSS_SECTION_NAME); | |
199 | symbol_table_insert (section_symbol (s)); | |
3b22753a | 200 | elf_com_section_ptr = bfd_com_section_ptr; |
252b5132 RH |
201 | } |
202 | ||
203 | void | |
dbe2df79 | 204 | elf_pop_insert (void) |
252b5132 RH |
205 | { |
206 | pop_insert (elf_pseudo_table); | |
207 | if (ECOFF_DEBUGGING) | |
208 | pop_insert (ecoff_debug_pseudo_table); | |
209 | } | |
210 | ||
211 | static bfd_vma | |
dbe2df79 | 212 | elf_s_get_size (symbolS *sym) |
252b5132 RH |
213 | { |
214 | return S_GET_SIZE (sym); | |
215 | } | |
216 | ||
217 | static void | |
dbe2df79 | 218 | elf_s_set_size (symbolS *sym, bfd_vma sz) |
252b5132 RH |
219 | { |
220 | S_SET_SIZE (sym, sz); | |
221 | } | |
222 | ||
223 | static bfd_vma | |
dbe2df79 | 224 | elf_s_get_align (symbolS *sym) |
252b5132 RH |
225 | { |
226 | return S_GET_ALIGN (sym); | |
227 | } | |
228 | ||
229 | static void | |
dbe2df79 | 230 | elf_s_set_align (symbolS *sym, bfd_vma align) |
252b5132 RH |
231 | { |
232 | S_SET_ALIGN (sym, align); | |
233 | } | |
234 | ||
4c63da97 | 235 | int |
dbe2df79 | 236 | elf_s_get_other (symbolS *sym) |
4c63da97 AM |
237 | { |
238 | return elf_symbol (symbol_get_bfdsym (sym))->internal_elf_sym.st_other; | |
239 | } | |
240 | ||
5110c57e | 241 | static void |
dbe2df79 | 242 | elf_s_set_other (symbolS *sym, int other) |
5110c57e HPN |
243 | { |
244 | S_SET_OTHER (sym, other); | |
245 | } | |
246 | ||
252b5132 | 247 | static int |
dbe2df79 | 248 | elf_sec_sym_ok_for_reloc (asection *sec) |
252b5132 RH |
249 | { |
250 | return obj_sec_sym_ok_for_reloc (sec); | |
251 | } | |
252 | ||
253 | void | |
c04f5787 | 254 | elf_file_symbol (const char *s, int appfile) |
252b5132 | 255 | { |
c04f5787 AM |
256 | if (!appfile |
257 | || symbol_rootP == NULL | |
258 | || symbol_rootP->bsym == NULL | |
259 | || (symbol_rootP->bsym->flags & BSF_FILE) == 0) | |
260 | { | |
261 | symbolS *sym; | |
252b5132 | 262 | |
c04f5787 AM |
263 | sym = symbol_new (s, absolute_section, 0, NULL); |
264 | symbol_set_frag (sym, &zero_address_frag); | |
265 | symbol_get_bfdsym (sym)->flags |= BSF_FILE; | |
252b5132 | 266 | |
c04f5787 AM |
267 | if (symbol_rootP != sym) |
268 | { | |
269 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); | |
270 | symbol_insert (sym, symbol_rootP, &symbol_rootP, &symbol_lastP); | |
252b5132 | 271 | #ifdef DEBUG |
c04f5787 | 272 | verify_symbol_chain (symbol_rootP, symbol_lastP); |
252b5132 | 273 | #endif |
c04f5787 | 274 | } |
252b5132 RH |
275 | } |
276 | ||
277 | #ifdef NEED_ECOFF_DEBUG | |
f17c130b | 278 | ecoff_new_file (s, appfile); |
252b5132 RH |
279 | #endif |
280 | } | |
281 | ||
e13bab5a AM |
282 | /* Called from read.c:s_comm after we've parsed .comm symbol, size. |
283 | Parse a possible alignment value. */ | |
284 | ||
3b22753a | 285 | symbolS * |
e13bab5a | 286 | elf_common_parse (int ignore ATTRIBUTE_UNUSED, symbolS *symbolP, addressT size) |
252b5132 | 287 | { |
e13bab5a AM |
288 | addressT align = 0; |
289 | int is_local = symbol_get_obj (symbolP)->local; | |
252b5132 | 290 | |
e13bab5a | 291 | if (*input_line_pointer == ',') |
9be1cda6 | 292 | { |
e13bab5a | 293 | char *save = input_line_pointer; |
9be1cda6 | 294 | |
252b5132 RH |
295 | input_line_pointer++; |
296 | SKIP_WHITESPACE (); | |
e13bab5a AM |
297 | |
298 | if (*input_line_pointer == '"') | |
252b5132 | 299 | { |
e13bab5a AM |
300 | /* For sparc. Accept .common symbol, length, "bss" */ |
301 | input_line_pointer++; | |
302 | /* Some use the dot, some don't. */ | |
303 | if (*input_line_pointer == '.') | |
304 | input_line_pointer++; | |
305 | /* Some say data, some say bss. */ | |
306 | if (strncmp (input_line_pointer, "bss\"", 4) == 0) | |
307 | input_line_pointer += 4; | |
308 | else if (strncmp (input_line_pointer, "data\"", 5) == 0) | |
309 | input_line_pointer += 5; | |
310 | else | |
252b5132 | 311 | { |
e13bab5a AM |
312 | char *p = input_line_pointer; |
313 | char c; | |
314 | ||
315 | while (*--p != '"') | |
316 | ; | |
317 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
318 | if (*input_line_pointer++ == '"') | |
319 | break; | |
320 | c = *input_line_pointer; | |
321 | *input_line_pointer = '\0'; | |
322 | as_bad (_("bad .common segment %s"), p); | |
323 | *input_line_pointer = c; | |
324 | ignore_rest_of_line (); | |
325 | return NULL; | |
252b5132 | 326 | } |
e13bab5a AM |
327 | /* ??? Don't ask me why these are always global. */ |
328 | is_local = 0; | |
252b5132 RH |
329 | } |
330 | else | |
331 | { | |
e13bab5a AM |
332 | input_line_pointer = save; |
333 | align = parse_align (is_local); | |
334 | if (align == (addressT) -1) | |
335 | return NULL; | |
252b5132 RH |
336 | } |
337 | } | |
e13bab5a AM |
338 | |
339 | if (is_local) | |
340 | { | |
341 | bss_alloc (symbolP, size, align); | |
342 | S_CLEAR_EXTERNAL (symbolP); | |
343 | } | |
252b5132 RH |
344 | else |
345 | { | |
e13bab5a AM |
346 | S_SET_VALUE (symbolP, size); |
347 | S_SET_ALIGN (symbolP, align); | |
348 | S_SET_EXTERNAL (symbolP); | |
3b22753a | 349 | S_SET_SEGMENT (symbolP, elf_com_section_ptr); |
252b5132 RH |
350 | } |
351 | ||
49309057 | 352 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; |
252b5132 | 353 | |
13ae64f3 | 354 | return symbolP; |
252b5132 RH |
355 | } |
356 | ||
13ae64f3 | 357 | void |
dbe2df79 | 358 | obj_elf_common (int is_common) |
13ae64f3 | 359 | { |
e13bab5a AM |
360 | if (flag_mri && is_common) |
361 | s_mri_common (0); | |
362 | else | |
363 | s_comm_internal (0, elf_common_parse); | |
13ae64f3 JJ |
364 | } |
365 | ||
366 | static void | |
dbe2df79 | 367 | obj_elf_tls_common (int ignore ATTRIBUTE_UNUSED) |
13ae64f3 | 368 | { |
e13bab5a | 369 | symbolS *symbolP = s_comm_internal (0, elf_common_parse); |
13ae64f3 JJ |
370 | |
371 | if (symbolP) | |
372 | symbol_get_bfdsym (symbolP)->flags |= BSF_THREAD_LOCAL; | |
373 | } | |
374 | ||
13c56984 AM |
375 | static void |
376 | obj_elf_lcomm (int ignore ATTRIBUTE_UNUSED) | |
377 | { | |
378 | symbolS *symbolP = s_comm_internal (0, s_lcomm_internal); | |
379 | ||
380 | if (symbolP) | |
381 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; | |
382 | } | |
383 | ||
252b5132 | 384 | static void |
dbe2df79 | 385 | obj_elf_local (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
386 | { |
387 | char *name; | |
388 | int c; | |
389 | symbolS *symbolP; | |
390 | ||
391 | do | |
392 | { | |
393 | name = input_line_pointer; | |
394 | c = get_symbol_end (); | |
395 | symbolP = symbol_find_or_make (name); | |
396 | *input_line_pointer = c; | |
397 | SKIP_WHITESPACE (); | |
398 | S_CLEAR_EXTERNAL (symbolP); | |
49309057 | 399 | symbol_get_obj (symbolP)->local = 1; |
252b5132 RH |
400 | if (c == ',') |
401 | { | |
402 | input_line_pointer++; | |
403 | SKIP_WHITESPACE (); | |
404 | if (*input_line_pointer == '\n') | |
405 | c = '\n'; | |
406 | } | |
407 | } | |
408 | while (c == ','); | |
409 | demand_empty_rest_of_line (); | |
410 | } | |
411 | ||
412 | static void | |
dbe2df79 | 413 | obj_elf_weak (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
414 | { |
415 | char *name; | |
416 | int c; | |
417 | symbolS *symbolP; | |
418 | ||
419 | do | |
420 | { | |
421 | name = input_line_pointer; | |
422 | c = get_symbol_end (); | |
423 | symbolP = symbol_find_or_make (name); | |
424 | *input_line_pointer = c; | |
425 | SKIP_WHITESPACE (); | |
426 | S_SET_WEAK (symbolP); | |
49309057 | 427 | symbol_get_obj (symbolP)->local = 1; |
252b5132 RH |
428 | if (c == ',') |
429 | { | |
430 | input_line_pointer++; | |
431 | SKIP_WHITESPACE (); | |
432 | if (*input_line_pointer == '\n') | |
433 | c = '\n'; | |
434 | } | |
435 | } | |
436 | while (c == ','); | |
437 | demand_empty_rest_of_line (); | |
438 | } | |
439 | ||
2e13b764 | 440 | static void |
dbe2df79 | 441 | obj_elf_visibility (int visibility) |
2e13b764 NC |
442 | { |
443 | char *name; | |
444 | int c; | |
445 | symbolS *symbolP; | |
446 | asymbol *bfdsym; | |
447 | elf_symbol_type *elfsym; | |
448 | ||
449 | do | |
450 | { | |
451 | name = input_line_pointer; | |
452 | c = get_symbol_end (); | |
453 | symbolP = symbol_find_or_make (name); | |
454 | *input_line_pointer = c; | |
fa306131 | 455 | |
2e13b764 | 456 | SKIP_WHITESPACE (); |
fa306131 | 457 | |
2e13b764 NC |
458 | bfdsym = symbol_get_bfdsym (symbolP); |
459 | elfsym = elf_symbol_from (bfd_asymbol_bfd (bfdsym), bfdsym); | |
fa306131 | 460 | |
2e13b764 | 461 | assert (elfsym); |
fa306131 | 462 | |
20e420c2 RH |
463 | elfsym->internal_elf_sym.st_other &= ~3; |
464 | elfsym->internal_elf_sym.st_other |= visibility; | |
fa306131 | 465 | |
2e13b764 NC |
466 | if (c == ',') |
467 | { | |
468 | input_line_pointer ++; | |
fa306131 | 469 | |
2e13b764 | 470 | SKIP_WHITESPACE (); |
fa306131 | 471 | |
2e13b764 NC |
472 | if (*input_line_pointer == '\n') |
473 | c = '\n'; | |
474 | } | |
475 | } | |
476 | while (c == ','); | |
fa306131 | 477 | |
2e13b764 NC |
478 | demand_empty_rest_of_line (); |
479 | } | |
480 | ||
252b5132 RH |
481 | static segT previous_section; |
482 | static int previous_subsection; | |
483 | ||
9de8d8f1 RH |
484 | struct section_stack |
485 | { | |
486 | struct section_stack *next; | |
487 | segT seg, prev_seg; | |
488 | int subseg, prev_subseg; | |
489 | }; | |
490 | ||
491 | static struct section_stack *section_stack; | |
492 | ||
fafe6678 | 493 | static bfd_boolean |
86654c12 L |
494 | get_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *inf) |
495 | { | |
fafe6678 | 496 | const char *gname = inf; |
86654c12 L |
497 | const char *group_name = elf_group_name (sec); |
498 | ||
fafe6678 | 499 | return (group_name == gname |
86654c12 | 500 | || (group_name != NULL |
fafe6678 L |
501 | && gname != NULL |
502 | && strcmp (group_name, gname) == 0)); | |
86654c12 L |
503 | } |
504 | ||
252b5132 RH |
505 | /* Handle the .section pseudo-op. This code supports two different |
506 | syntaxes. | |
507 | ||
508 | The first is found on Solaris, and looks like | |
509 | .section ".sec1",#alloc,#execinstr,#write | |
510 | Here the names after '#' are the SHF_* flags to turn on for the | |
511 | section. I'm not sure how it determines the SHT_* type (BFD | |
512 | doesn't really give us control over the type, anyhow). | |
513 | ||
514 | The second format is found on UnixWare, and probably most SVR4 | |
515 | machines, and looks like | |
516 | .section .sec1,"a",@progbits | |
517 | The quoted string may contain any combination of a, w, x, and | |
518 | represents the SHF_* flags to turn on for the section. The string | |
519 | beginning with '@' can be progbits or nobits. There should be | |
520 | other possibilities, but I don't know what they are. In any case, | |
521 | BFD doesn't really let us set the section type. */ | |
522 | ||
cca86cc8 | 523 | void |
dbe2df79 AM |
524 | obj_elf_change_section (const char *name, |
525 | int type, | |
526 | int attr, | |
527 | int entsize, | |
528 | const char *group_name, | |
529 | int linkonce, | |
530 | int push) | |
252b5132 | 531 | { |
fafe6678 | 532 | asection *old_sec; |
252b5132 | 533 | segT sec; |
742f45cf | 534 | flagword flags; |
551b43fd | 535 | const struct elf_backend_data *bed; |
f61e8019 | 536 | const struct bfd_elf_special_section *ssect; |
252b5132 RH |
537 | |
538 | #ifdef md_flush_pending_output | |
539 | md_flush_pending_output (); | |
540 | #endif | |
541 | ||
9de8d8f1 RH |
542 | /* Switch to the section, creating it if necessary. */ |
543 | if (push) | |
544 | { | |
545 | struct section_stack *elt; | |
546 | elt = xmalloc (sizeof (struct section_stack)); | |
547 | elt->next = section_stack; | |
548 | elt->seg = now_seg; | |
549 | elt->prev_seg = previous_section; | |
550 | elt->subseg = now_subseg; | |
551 | elt->prev_subseg = previous_subsection; | |
552 | section_stack = elt; | |
553 | } | |
554 | previous_section = now_seg; | |
555 | previous_subsection = now_subseg; | |
556 | ||
fafe6678 L |
557 | old_sec = bfd_get_section_by_name_if (stdoutput, name, get_section, |
558 | (void *) group_name); | |
559 | if (old_sec) | |
86654c12 | 560 | { |
fafe6678 | 561 | sec = old_sec; |
86654c12 L |
562 | subseg_set (sec, 0); |
563 | } | |
564 | else | |
565 | sec = subseg_force_new (name, 0); | |
566 | ||
551b43fd AM |
567 | bed = get_elf_backend_data (stdoutput); |
568 | ssect = (*bed->get_sec_type_attr) (stdoutput, sec); | |
9de8d8f1 | 569 | |
f61e8019 | 570 | if (ssect != NULL) |
2f89ff8d | 571 | { |
ea8f8eab L |
572 | bfd_boolean override = FALSE; |
573 | ||
2f89ff8d | 574 | if (type == SHT_NULL) |
f61e8019 AM |
575 | type = ssect->type; |
576 | else if (type != ssect->type) | |
2f89ff8d | 577 | { |
fafe6678 | 578 | if (old_sec == NULL |
2f89ff8d | 579 | /* FIXME: gcc, as of 2002-10-22, will emit |
7ed1d346 | 580 | |
2f89ff8d | 581 | .section .init_array,"aw",@progbits |
7ed1d346 | 582 | |
2f89ff8d | 583 | for __attribute__ ((section (".init_array"))). |
3b22753a L |
584 | "@progbits" is incorrect. Also for x86-64 large bss |
585 | sections, gcc, as of 2005-07-06, will emit | |
586 | ||
587 | .section .lbss,"aw",@progbits | |
588 | ||
2f89ff8d | 589 | "@progbits" is incorrect. */ |
3b22753a L |
590 | #ifdef TC_I386 |
591 | && (bed->s->arch_size != 64 | |
592 | || !(ssect->attr & SHF_X86_64_LARGE)) | |
593 | #endif | |
f61e8019 AM |
594 | && ssect->type != SHT_INIT_ARRAY |
595 | && ssect->type != SHT_FINI_ARRAY | |
596 | && ssect->type != SHT_PREINIT_ARRAY) | |
2f89ff8d L |
597 | { |
598 | /* We allow to specify any type for a .note section. */ | |
f61e8019 | 599 | if (ssect->type != SHT_NOTE) |
2f89ff8d L |
600 | as_warn (_("setting incorrect section type for %s"), |
601 | name); | |
602 | } | |
603 | else | |
604 | { | |
605 | as_warn (_("ignoring incorrect section type for %s"), | |
742f45cf | 606 | name); |
f61e8019 | 607 | type = ssect->type; |
2f89ff8d L |
608 | } |
609 | } | |
610 | ||
fafe6678 | 611 | if (old_sec == NULL && (attr & ~ssect->attr) != 0) |
2f89ff8d L |
612 | { |
613 | /* As a GNU extension, we permit a .note section to be | |
f61e8019 | 614 | allocatable. If the linker sees an allocatable .note |
2f89ff8d | 615 | section, it will create a PT_NOTE segment in the output |
92191b29 | 616 | file. We also allow "x" for .note.GNU-stack. */ |
f61e8019 AM |
617 | if (ssect->type == SHT_NOTE |
618 | && (attr == SHF_ALLOC || attr == SHF_EXECINSTR)) | |
619 | ; | |
620 | /* Allow different SHF_MERGE and SHF_STRINGS if we have | |
621 | something like .rodata.str. */ | |
622 | else if (ssect->suffix_length == -2 | |
623 | && name[ssect->prefix_length] == '.' | |
ea8f8eab L |
624 | && (attr |
625 | & ~ssect->attr | |
626 | & ~SHF_MERGE | |
627 | & ~SHF_STRINGS) == 0) | |
f61e8019 | 628 | ; |
ea8f8eab L |
629 | /* .interp, .strtab and .symtab can have SHF_ALLOC. */ |
630 | else if (attr == SHF_ALLOC | |
631 | && (strcmp (name, ".interp") == 0 | |
632 | || strcmp (name, ".strtab") == 0 | |
633 | || strcmp (name, ".symtab") == 0)) | |
634 | override = TRUE; | |
b9f18452 L |
635 | /* .note.GNU-stack can have SHF_EXECINSTR. */ |
636 | else if (attr == SHF_EXECINSTR | |
637 | && strcmp (name, ".note.GNU-stack") == 0) | |
638 | override = TRUE; | |
7f841127 L |
639 | #ifdef TC_ALPHA |
640 | /* A section on Alpha may have SHF_ALPHA_GPREL. */ | |
641 | else if ((attr & ~ssect->attr) == SHF_ALPHA_GPREL) | |
642 | override = TRUE; | |
643 | #endif | |
f61e8019 | 644 | else |
ea8f8eab | 645 | { |
86654c12 L |
646 | if (group_name == NULL) |
647 | as_warn (_("setting incorrect section attributes for %s"), | |
648 | name); | |
ea8f8eab L |
649 | override = TRUE; |
650 | } | |
2f89ff8d | 651 | } |
fafe6678 | 652 | if (!override && old_sec == NULL) |
f61e8019 | 653 | attr |= ssect->attr; |
2f89ff8d | 654 | } |
742f45cf AM |
655 | |
656 | /* Convert ELF type and flags to BFD flags. */ | |
657 | flags = (SEC_RELOC | |
658 | | ((attr & SHF_WRITE) ? 0 : SEC_READONLY) | |
659 | | ((attr & SHF_ALLOC) ? SEC_ALLOC : 0) | |
660 | | (((attr & SHF_ALLOC) && type != SHT_NOBITS) ? SEC_LOAD : 0) | |
f5fa8ca2 JJ |
661 | | ((attr & SHF_EXECINSTR) ? SEC_CODE : 0) |
662 | | ((attr & SHF_MERGE) ? SEC_MERGE : 0) | |
13ae64f3 JJ |
663 | | ((attr & SHF_STRINGS) ? SEC_STRINGS : 0) |
664 | | ((attr & SHF_TLS) ? SEC_THREAD_LOCAL : 0)); | |
9de8d8f1 | 665 | #ifdef md_elf_section_flags |
742f45cf | 666 | flags = md_elf_section_flags (flags, attr, type); |
9de8d8f1 RH |
667 | #endif |
668 | ||
86654c12 L |
669 | if (linkonce) |
670 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
671 | ||
fafe6678 | 672 | if (old_sec == NULL) |
742f45cf AM |
673 | { |
674 | symbolS *secsym; | |
675 | ||
7a6d0b32 JB |
676 | elf_section_type (sec) = type; |
677 | elf_section_flags (sec) = attr; | |
678 | ||
9de8d8f1 RH |
679 | /* Prevent SEC_HAS_CONTENTS from being inadvertently set. */ |
680 | if (type == SHT_NOBITS) | |
13c56984 | 681 | seg_info (sec)->bss = 1; |
9de8d8f1 RH |
682 | |
683 | bfd_set_section_flags (stdoutput, sec, flags); | |
f5fa8ca2 JJ |
684 | if (flags & SEC_MERGE) |
685 | sec->entsize = entsize; | |
aa1f4858 | 686 | elf_group_name (sec) = group_name; |
9de8d8f1 RH |
687 | |
688 | /* Add a symbol for this section to the symbol table. */ | |
689 | secsym = symbol_find (name); | |
690 | if (secsym != NULL) | |
691 | symbol_set_bfdsym (secsym, sec->symbol); | |
692 | else | |
13c56984 | 693 | symbol_table_insert (section_symbol (sec)); |
9de8d8f1 | 694 | } |
7a6d0b32 | 695 | else |
742f45cf | 696 | { |
7a6d0b32 JB |
697 | if (type != SHT_NULL |
698 | && (unsigned) type != elf_section_type (old_sec)) | |
699 | as_warn (_("ignoring changed section type for %s"), name); | |
700 | ||
701 | if (attr != 0) | |
702 | { | |
703 | /* If section attributes are specified the second time we see a | |
704 | particular section, then check that they are the same as we | |
705 | saw the first time. */ | |
706 | if (((old_sec->flags ^ flags) | |
707 | & (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE | |
708 | | SEC_EXCLUDE | SEC_SORT_ENTRIES | SEC_MERGE | SEC_STRINGS | |
709 | | SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD | |
710 | | SEC_THREAD_LOCAL))) | |
711 | as_warn (_("ignoring changed section attributes for %s"), name); | |
712 | if ((flags & SEC_MERGE) && old_sec->entsize != (unsigned) entsize) | |
713 | as_warn (_("ignoring changed section entity size for %s"), name); | |
714 | } | |
742f45cf | 715 | } |
9de8d8f1 RH |
716 | |
717 | #ifdef md_elf_section_change_hook | |
742f45cf | 718 | md_elf_section_change_hook (); |
9de8d8f1 RH |
719 | #endif |
720 | } | |
721 | ||
8d28c9d7 | 722 | static int |
dbe2df79 | 723 | obj_elf_parse_section_letters (char *str, size_t len) |
9de8d8f1 RH |
724 | { |
725 | int attr = 0; | |
726 | ||
727 | while (len > 0) | |
728 | { | |
729 | switch (*str) | |
730 | { | |
731 | case 'a': | |
732 | attr |= SHF_ALLOC; | |
733 | break; | |
734 | case 'w': | |
735 | attr |= SHF_WRITE; | |
736 | break; | |
737 | case 'x': | |
738 | attr |= SHF_EXECINSTR; | |
739 | break; | |
9469ddf0 | 740 | case 'M': |
f5fa8ca2 JJ |
741 | attr |= SHF_MERGE; |
742 | break; | |
9469ddf0 | 743 | case 'S': |
f5fa8ca2 JJ |
744 | attr |= SHF_STRINGS; |
745 | break; | |
060adf0e AM |
746 | case 'G': |
747 | attr |= SHF_GROUP; | |
748 | break; | |
13ae64f3 JJ |
749 | case 'T': |
750 | attr |= SHF_TLS; | |
751 | break; | |
34105363 L |
752 | /* Compatibility. */ |
753 | case 'm': | |
754 | if (*(str - 1) == 'a') | |
755 | { | |
756 | attr |= SHF_MERGE; | |
757 | if (len > 1 && str[1] == 's') | |
758 | { | |
759 | attr |= SHF_STRINGS; | |
760 | str++, len--; | |
761 | } | |
762 | break; | |
763 | } | |
9de8d8f1 RH |
764 | default: |
765 | { | |
13ae64f3 | 766 | char *bad_msg = _("unrecognized .section attribute: want a,w,x,M,S,G,T"); |
9de8d8f1 RH |
767 | #ifdef md_elf_section_letter |
768 | int md_attr = md_elf_section_letter (*str, &bad_msg); | |
769 | if (md_attr >= 0) | |
770 | attr |= md_attr; | |
771 | else | |
772 | #endif | |
711ef82f | 773 | as_fatal ("%s", bad_msg); |
9de8d8f1 RH |
774 | } |
775 | break; | |
776 | } | |
777 | str++, len--; | |
778 | } | |
779 | ||
780 | return attr; | |
781 | } | |
782 | ||
8d28c9d7 | 783 | static int |
dbe2df79 | 784 | obj_elf_section_word (char *str, size_t len) |
9de8d8f1 RH |
785 | { |
786 | if (len == 5 && strncmp (str, "write", 5) == 0) | |
787 | return SHF_WRITE; | |
788 | if (len == 5 && strncmp (str, "alloc", 5) == 0) | |
789 | return SHF_ALLOC; | |
790 | if (len == 9 && strncmp (str, "execinstr", 9) == 0) | |
791 | return SHF_EXECINSTR; | |
b9734f35 JJ |
792 | if (len == 3 && strncmp (str, "tls", 3) == 0) |
793 | return SHF_TLS; | |
9de8d8f1 RH |
794 | |
795 | #ifdef md_elf_section_word | |
796 | { | |
797 | int md_attr = md_elf_section_word (str, len); | |
798 | if (md_attr >= 0) | |
799 | return md_attr; | |
800 | } | |
801 | #endif | |
802 | ||
6ce8b369 | 803 | as_warn (_("unrecognized section attribute")); |
9de8d8f1 RH |
804 | return 0; |
805 | } | |
806 | ||
8d28c9d7 | 807 | static int |
dbe2df79 | 808 | obj_elf_section_type (char *str, size_t len) |
9de8d8f1 RH |
809 | { |
810 | if (len == 8 && strncmp (str, "progbits", 8) == 0) | |
811 | return SHT_PROGBITS; | |
812 | if (len == 6 && strncmp (str, "nobits", 6) == 0) | |
813 | return SHT_NOBITS; | |
34f70875 L |
814 | if (len == 4 && strncmp (str, "note", 4) == 0) |
815 | return SHT_NOTE; | |
10b016c2 PB |
816 | if (len == 10 && strncmp (str, "init_array", 10) == 0) |
817 | return SHT_INIT_ARRAY; | |
818 | if (len == 10 && strncmp (str, "fini_array", 10) == 0) | |
819 | return SHT_FINI_ARRAY; | |
820 | if (len == 13 && strncmp (str, "preinit_array", 13) == 0) | |
821 | return SHT_PREINIT_ARRAY; | |
9de8d8f1 RH |
822 | |
823 | #ifdef md_elf_section_type | |
824 | { | |
825 | int md_type = md_elf_section_type (str, len); | |
826 | if (md_type >= 0) | |
827 | return md_type; | |
828 | } | |
829 | #endif | |
830 | ||
6ce8b369 | 831 | as_warn (_("unrecognized section type")); |
9de8d8f1 RH |
832 | return 0; |
833 | } | |
834 | ||
6ce8b369 AM |
835 | /* Get name of section. */ |
836 | static char * | |
dbe2df79 | 837 | obj_elf_section_name (void) |
6ce8b369 AM |
838 | { |
839 | char *name; | |
840 | ||
841 | SKIP_WHITESPACE (); | |
842 | if (*input_line_pointer == '"') | |
843 | { | |
844 | int dummy; | |
845 | ||
846 | name = demand_copy_C_string (&dummy); | |
847 | if (name == NULL) | |
848 | { | |
849 | ignore_rest_of_line (); | |
850 | return NULL; | |
851 | } | |
852 | } | |
853 | else | |
854 | { | |
855 | char *end = input_line_pointer; | |
856 | ||
857 | while (0 == strchr ("\n\t,; ", *end)) | |
858 | end++; | |
859 | if (end == input_line_pointer) | |
860 | { | |
c95b35a9 | 861 | as_bad (_("missing name")); |
6ce8b369 AM |
862 | ignore_rest_of_line (); |
863 | return NULL; | |
864 | } | |
865 | ||
866 | name = xmalloc (end - input_line_pointer + 1); | |
867 | memcpy (name, input_line_pointer, end - input_line_pointer); | |
868 | name[end - input_line_pointer] = '\0'; | |
612d7b83 L |
869 | #ifdef tc_canonicalize_section_name |
870 | name = tc_canonicalize_section_name (name); | |
871 | #endif | |
6ce8b369 AM |
872 | input_line_pointer = end; |
873 | } | |
874 | SKIP_WHITESPACE (); | |
875 | return name; | |
876 | } | |
877 | ||
9de8d8f1 | 878 | void |
dbe2df79 | 879 | obj_elf_section (int push) |
9de8d8f1 | 880 | { |
aa1f4858 | 881 | char *name, *group_name, *beg; |
9de8d8f1 | 882 | int type, attr, dummy; |
f5fa8ca2 | 883 | int entsize; |
d2dab548 | 884 | int linkonce; |
9de8d8f1 | 885 | |
5b93d8bb | 886 | #ifndef TC_I370 |
252b5132 RH |
887 | if (flag_mri) |
888 | { | |
889 | char mri_type; | |
890 | ||
9de8d8f1 | 891 | #ifdef md_flush_pending_output |
60bcf0fa | 892 | md_flush_pending_output (); |
9de8d8f1 RH |
893 | #endif |
894 | ||
252b5132 RH |
895 | previous_section = now_seg; |
896 | previous_subsection = now_subseg; | |
897 | ||
898 | s_mri_sect (&mri_type); | |
899 | ||
900 | #ifdef md_elf_section_change_hook | |
901 | md_elf_section_change_hook (); | |
902 | #endif | |
903 | ||
904 | return; | |
905 | } | |
5b93d8bb | 906 | #endif /* ! defined (TC_I370) */ |
252b5132 | 907 | |
6ce8b369 AM |
908 | name = obj_elf_section_name (); |
909 | if (name == NULL) | |
910 | return; | |
252b5132 RH |
911 | type = SHT_NULL; |
912 | attr = 0; | |
aa1f4858 | 913 | group_name = NULL; |
f5fa8ca2 | 914 | entsize = 0; |
d2dab548 | 915 | linkonce = 0; |
252b5132 RH |
916 | |
917 | if (*input_line_pointer == ',') | |
918 | { | |
919 | /* Skip the comma. */ | |
920 | ++input_line_pointer; | |
252b5132 RH |
921 | SKIP_WHITESPACE (); |
922 | ||
923 | if (*input_line_pointer == '"') | |
924 | { | |
9de8d8f1 RH |
925 | beg = demand_copy_C_string (&dummy); |
926 | if (beg == NULL) | |
252b5132 | 927 | { |
9de8d8f1 RH |
928 | ignore_rest_of_line (); |
929 | return; | |
252b5132 | 930 | } |
9de8d8f1 | 931 | attr |= obj_elf_parse_section_letters (beg, strlen (beg)); |
252b5132 RH |
932 | |
933 | SKIP_WHITESPACE (); | |
934 | if (*input_line_pointer == ',') | |
935 | { | |
9de8d8f1 | 936 | char c; |
060adf0e AM |
937 | char *save = input_line_pointer; |
938 | ||
252b5132 RH |
939 | ++input_line_pointer; |
940 | SKIP_WHITESPACE (); | |
9de8d8f1 RH |
941 | c = *input_line_pointer; |
942 | if (c == '"') | |
252b5132 | 943 | { |
9de8d8f1 RH |
944 | beg = demand_copy_C_string (&dummy); |
945 | if (beg == NULL) | |
252b5132 | 946 | { |
9de8d8f1 RH |
947 | ignore_rest_of_line (); |
948 | return; | |
252b5132 | 949 | } |
9de8d8f1 | 950 | type = obj_elf_section_type (beg, strlen (beg)); |
9de8d8f1 RH |
951 | } |
952 | else if (c == '@' || c == '%') | |
953 | { | |
954 | beg = ++input_line_pointer; | |
955 | c = get_symbol_end (); | |
956 | *input_line_pointer = c; | |
957 | type = obj_elf_section_type (beg, input_line_pointer - beg); | |
252b5132 | 958 | } |
060adf0e AM |
959 | else |
960 | input_line_pointer = save; | |
252b5132 | 961 | } |
f5fa8ca2 JJ |
962 | |
963 | SKIP_WHITESPACE (); | |
6ce8b369 | 964 | if ((attr & SHF_MERGE) != 0 && *input_line_pointer == ',') |
f5fa8ca2 JJ |
965 | { |
966 | ++input_line_pointer; | |
967 | SKIP_WHITESPACE (); | |
968 | entsize = get_absolute_expression (); | |
6ce8b369 | 969 | SKIP_WHITESPACE (); |
f5fa8ca2 JJ |
970 | if (entsize < 0) |
971 | { | |
6ce8b369 | 972 | as_warn (_("invalid merge entity size")); |
f5fa8ca2 JJ |
973 | attr &= ~SHF_MERGE; |
974 | entsize = 0; | |
975 | } | |
976 | } | |
6ce8b369 AM |
977 | else if ((attr & SHF_MERGE) != 0) |
978 | { | |
979 | as_warn (_("entity size for SHF_MERGE not specified")); | |
980 | attr &= ~SHF_MERGE; | |
981 | } | |
060adf0e AM |
982 | |
983 | if ((attr & SHF_GROUP) != 0 && *input_line_pointer == ',') | |
984 | { | |
985 | ++input_line_pointer; | |
aa1f4858 AM |
986 | group_name = obj_elf_section_name (); |
987 | if (group_name == NULL) | |
060adf0e | 988 | attr &= ~SHF_GROUP; |
d2dab548 AM |
989 | else if (strncmp (input_line_pointer, ",comdat", 7) == 0) |
990 | { | |
991 | input_line_pointer += 7; | |
992 | linkonce = 1; | |
993 | } | |
994 | else if (strncmp (name, ".gnu.linkonce", 13) == 0) | |
995 | linkonce = 1; | |
060adf0e AM |
996 | } |
997 | else if ((attr & SHF_GROUP) != 0) | |
998 | { | |
999 | as_warn (_("group name for SHF_GROUP not specified")); | |
1000 | attr &= ~SHF_GROUP; | |
1001 | } | |
252b5132 RH |
1002 | } |
1003 | else | |
1004 | { | |
1005 | do | |
1006 | { | |
9de8d8f1 RH |
1007 | char c; |
1008 | ||
252b5132 RH |
1009 | SKIP_WHITESPACE (); |
1010 | if (*input_line_pointer != '#') | |
1011 | { | |
c95b35a9 | 1012 | as_bad (_("character following name is not '#'")); |
252b5132 RH |
1013 | ignore_rest_of_line (); |
1014 | return; | |
1015 | } | |
9de8d8f1 RH |
1016 | beg = ++input_line_pointer; |
1017 | c = get_symbol_end (); | |
1018 | *input_line_pointer = c; | |
1019 | ||
1020 | attr |= obj_elf_section_word (beg, input_line_pointer - beg); | |
1021 | ||
252b5132 RH |
1022 | SKIP_WHITESPACE (); |
1023 | } | |
1024 | while (*input_line_pointer++ == ','); | |
1025 | --input_line_pointer; | |
1026 | } | |
1027 | } | |
1028 | ||
252b5132 | 1029 | demand_empty_rest_of_line (); |
9de8d8f1 | 1030 | |
d2dab548 | 1031 | obj_elf_change_section (name, type, attr, entsize, group_name, linkonce, push); |
252b5132 RH |
1032 | } |
1033 | ||
1034 | /* Change to the .data section. */ | |
1035 | ||
16b93d88 | 1036 | void |
dbe2df79 | 1037 | obj_elf_data (int i) |
252b5132 RH |
1038 | { |
1039 | #ifdef md_flush_pending_output | |
1040 | md_flush_pending_output (); | |
1041 | #endif | |
1042 | ||
1043 | previous_section = now_seg; | |
1044 | previous_subsection = now_subseg; | |
1045 | s_data (i); | |
1046 | ||
1047 | #ifdef md_elf_section_change_hook | |
1048 | md_elf_section_change_hook (); | |
1049 | #endif | |
1050 | } | |
1051 | ||
1052 | /* Change to the .text section. */ | |
1053 | ||
16b93d88 | 1054 | void |
dbe2df79 | 1055 | obj_elf_text (int i) |
252b5132 RH |
1056 | { |
1057 | #ifdef md_flush_pending_output | |
1058 | md_flush_pending_output (); | |
1059 | #endif | |
1060 | ||
1061 | previous_section = now_seg; | |
1062 | previous_subsection = now_subseg; | |
1063 | s_text (i); | |
1064 | ||
1065 | #ifdef md_elf_section_change_hook | |
1066 | md_elf_section_change_hook (); | |
1067 | #endif | |
1068 | } | |
1069 | ||
8fe53b44 JB |
1070 | /* Change to the *ABS* section. */ |
1071 | ||
1072 | void | |
1073 | obj_elf_struct (int i) | |
1074 | { | |
1075 | #ifdef md_flush_pending_output | |
1076 | md_flush_pending_output (); | |
1077 | #endif | |
1078 | ||
1079 | previous_section = now_seg; | |
1080 | previous_subsection = now_subseg; | |
1081 | s_struct (i); | |
1082 | ||
1083 | #ifdef md_elf_section_change_hook | |
1084 | md_elf_section_change_hook (); | |
1085 | #endif | |
1086 | } | |
1087 | ||
252b5132 | 1088 | static void |
dbe2df79 | 1089 | obj_elf_subsection (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1090 | { |
1091 | register int temp; | |
1092 | ||
1093 | #ifdef md_flush_pending_output | |
1094 | md_flush_pending_output (); | |
1095 | #endif | |
1096 | ||
1097 | previous_section = now_seg; | |
1098 | previous_subsection = now_subseg; | |
1099 | ||
1100 | temp = get_absolute_expression (); | |
1101 | subseg_set (now_seg, (subsegT) temp); | |
1102 | demand_empty_rest_of_line (); | |
1103 | ||
1104 | #ifdef md_elf_section_change_hook | |
1105 | md_elf_section_change_hook (); | |
1106 | #endif | |
1107 | } | |
1108 | ||
1109 | /* This can be called from the processor backends if they change | |
1110 | sections. */ | |
1111 | ||
1112 | void | |
dbe2df79 | 1113 | obj_elf_section_change_hook (void) |
252b5132 RH |
1114 | { |
1115 | previous_section = now_seg; | |
1116 | previous_subsection = now_subseg; | |
1117 | } | |
1118 | ||
1119 | void | |
dbe2df79 | 1120 | obj_elf_previous (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1121 | { |
9de8d8f1 RH |
1122 | segT new_section; |
1123 | int new_subsection; | |
1124 | ||
252b5132 RH |
1125 | if (previous_section == 0) |
1126 | { | |
6ce8b369 | 1127 | as_warn (_(".previous without corresponding .section; ignored")); |
252b5132 RH |
1128 | return; |
1129 | } | |
1130 | ||
1131 | #ifdef md_flush_pending_output | |
1132 | md_flush_pending_output (); | |
1133 | #endif | |
1134 | ||
9de8d8f1 RH |
1135 | new_section = previous_section; |
1136 | new_subsection = previous_subsection; | |
1137 | previous_section = now_seg; | |
1138 | previous_subsection = now_subseg; | |
1139 | subseg_set (new_section, new_subsection); | |
1140 | ||
1141 | #ifdef md_elf_section_change_hook | |
1142 | md_elf_section_change_hook (); | |
1143 | #endif | |
1144 | } | |
1145 | ||
1146 | static void | |
dbe2df79 | 1147 | obj_elf_popsection (int xxx ATTRIBUTE_UNUSED) |
9de8d8f1 RH |
1148 | { |
1149 | struct section_stack *top = section_stack; | |
1150 | ||
1151 | if (top == NULL) | |
1152 | { | |
6ce8b369 | 1153 | as_warn (_(".popsection without corresponding .pushsection; ignored")); |
9de8d8f1 RH |
1154 | return; |
1155 | } | |
1156 | ||
1157 | #ifdef md_flush_pending_output | |
1158 | md_flush_pending_output (); | |
1159 | #endif | |
1160 | ||
1161 | section_stack = top->next; | |
1162 | previous_section = top->prev_seg; | |
1163 | previous_subsection = top->prev_subseg; | |
1164 | subseg_set (top->seg, top->subseg); | |
1165 | free (top); | |
252b5132 RH |
1166 | |
1167 | #ifdef md_elf_section_change_hook | |
1168 | md_elf_section_change_hook (); | |
1169 | #endif | |
1170 | } | |
1171 | ||
1172 | static void | |
dbe2df79 | 1173 | obj_elf_line (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1174 | { |
1175 | /* Assume delimiter is part of expression. BSD4.2 as fails with | |
bf514e21 | 1176 | delightful bug, so we are not being incompatible here. */ |
dbe2df79 | 1177 | new_logical_line (NULL, get_absolute_expression ()); |
252b5132 RH |
1178 | demand_empty_rest_of_line (); |
1179 | } | |
1180 | ||
1181 | /* This handles the .symver pseudo-op, which is used to specify a | |
1182 | symbol version. The syntax is ``.symver NAME,SYMVERNAME''. | |
1183 | SYMVERNAME may contain ELF_VER_CHR ('@') characters. This | |
1184 | pseudo-op causes the assembler to emit a symbol named SYMVERNAME | |
1185 | with the same value as the symbol NAME. */ | |
1186 | ||
1187 | static void | |
dbe2df79 | 1188 | obj_elf_symver (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1189 | { |
1190 | char *name; | |
1191 | char c; | |
468cced8 | 1192 | char old_lexat; |
252b5132 RH |
1193 | symbolS *sym; |
1194 | ||
1195 | name = input_line_pointer; | |
1196 | c = get_symbol_end (); | |
1197 | ||
1198 | sym = symbol_find_or_make (name); | |
1199 | ||
1200 | *input_line_pointer = c; | |
1201 | ||
252b5132 RH |
1202 | SKIP_WHITESPACE (); |
1203 | if (*input_line_pointer != ',') | |
1204 | { | |
1205 | as_bad (_("expected comma after name in .symver")); | |
1206 | ignore_rest_of_line (); | |
1207 | return; | |
1208 | } | |
1209 | ||
1210 | ++input_line_pointer; | |
eba874d8 | 1211 | SKIP_WHITESPACE (); |
252b5132 | 1212 | name = input_line_pointer; |
468cced8 AM |
1213 | |
1214 | /* Temporarily include '@' in symbol names. */ | |
1215 | old_lexat = lex_type[(unsigned char) '@']; | |
1216 | lex_type[(unsigned char) '@'] |= LEX_NAME; | |
1217 | c = get_symbol_end (); | |
1218 | lex_type[(unsigned char) '@'] = old_lexat; | |
252b5132 | 1219 | |
339681c0 L |
1220 | if (symbol_get_obj (sym)->versioned_name == NULL) |
1221 | { | |
1222 | symbol_get_obj (sym)->versioned_name = xstrdup (name); | |
252b5132 | 1223 | |
339681c0 | 1224 | *input_line_pointer = c; |
252b5132 | 1225 | |
6f620856 L |
1226 | if (strchr (symbol_get_obj (sym)->versioned_name, |
1227 | ELF_VER_CHR) == NULL) | |
339681c0 L |
1228 | { |
1229 | as_bad (_("missing version name in `%s' for symbol `%s'"), | |
1230 | symbol_get_obj (sym)->versioned_name, | |
1231 | S_GET_NAME (sym)); | |
1232 | ignore_rest_of_line (); | |
1233 | return; | |
1234 | } | |
1235 | } | |
1236 | else | |
252b5132 | 1237 | { |
339681c0 L |
1238 | if (strcmp (symbol_get_obj (sym)->versioned_name, name)) |
1239 | { | |
1240 | as_bad (_("multiple versions [`%s'|`%s'] for symbol `%s'"), | |
1241 | name, symbol_get_obj (sym)->versioned_name, | |
1242 | S_GET_NAME (sym)); | |
1243 | ignore_rest_of_line (); | |
1244 | return; | |
1245 | } | |
1246 | ||
1247 | *input_line_pointer = c; | |
252b5132 RH |
1248 | } |
1249 | ||
1250 | demand_empty_rest_of_line (); | |
1251 | } | |
1252 | ||
1253 | /* This handles the .vtable_inherit pseudo-op, which is used to indicate | |
1254 | to the linker the hierarchy in which a particular table resides. The | |
1255 | syntax is ".vtable_inherit CHILDNAME, PARENTNAME". */ | |
1256 | ||
904a31bf | 1257 | struct fix * |
dbe2df79 | 1258 | obj_elf_vtable_inherit (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1259 | { |
1260 | char *cname, *pname; | |
1261 | symbolS *csym, *psym; | |
1262 | char c, bad = 0; | |
1263 | ||
1264 | if (*input_line_pointer == '#') | |
1265 | ++input_line_pointer; | |
1266 | ||
1267 | cname = input_line_pointer; | |
1268 | c = get_symbol_end (); | |
1269 | csym = symbol_find (cname); | |
1270 | ||
1271 | /* GCFIXME: should check that we don't have two .vtable_inherits for | |
1272 | the same child symbol. Also, we can currently only do this if the | |
1273 | child symbol is already exists and is placed in a fragment. */ | |
1274 | ||
49309057 | 1275 | if (csym == NULL || symbol_get_frag (csym) == NULL) |
252b5132 RH |
1276 | { |
1277 | as_bad ("expected `%s' to have already been set for .vtable_inherit", | |
1278 | cname); | |
1279 | bad = 1; | |
1280 | } | |
1281 | ||
1282 | *input_line_pointer = c; | |
1283 | ||
1284 | SKIP_WHITESPACE (); | |
1285 | if (*input_line_pointer != ',') | |
1286 | { | |
1287 | as_bad ("expected comma after name in .vtable_inherit"); | |
1288 | ignore_rest_of_line (); | |
904a31bf | 1289 | return NULL; |
252b5132 RH |
1290 | } |
1291 | ||
1292 | ++input_line_pointer; | |
1293 | SKIP_WHITESPACE (); | |
1294 | ||
1295 | if (*input_line_pointer == '#') | |
1296 | ++input_line_pointer; | |
1297 | ||
1298 | if (input_line_pointer[0] == '0' | |
1299 | && (input_line_pointer[1] == '\0' | |
3882b010 | 1300 | || ISSPACE (input_line_pointer[1]))) |
252b5132 RH |
1301 | { |
1302 | psym = section_symbol (absolute_section); | |
1303 | ++input_line_pointer; | |
1304 | } | |
1305 | else | |
1306 | { | |
1307 | pname = input_line_pointer; | |
1308 | c = get_symbol_end (); | |
1309 | psym = symbol_find_or_make (pname); | |
1310 | *input_line_pointer = c; | |
1311 | } | |
1312 | ||
1313 | demand_empty_rest_of_line (); | |
1314 | ||
1315 | if (bad) | |
904a31bf | 1316 | return NULL; |
252b5132 | 1317 | |
49309057 | 1318 | assert (symbol_get_value_expression (csym)->X_op == O_constant); |
904a31bf AM |
1319 | return fix_new (symbol_get_frag (csym), |
1320 | symbol_get_value_expression (csym)->X_add_number, | |
1321 | 0, psym, 0, 0, BFD_RELOC_VTABLE_INHERIT); | |
252b5132 | 1322 | } |
fa306131 | 1323 | |
252b5132 RH |
1324 | /* This handles the .vtable_entry pseudo-op, which is used to indicate |
1325 | to the linker that a vtable slot was used. The syntax is | |
1326 | ".vtable_entry tablename, offset". */ | |
1327 | ||
904a31bf | 1328 | struct fix * |
dbe2df79 | 1329 | obj_elf_vtable_entry (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1330 | { |
1331 | char *name; | |
1332 | symbolS *sym; | |
1333 | offsetT offset; | |
1334 | char c; | |
1335 | ||
1336 | if (*input_line_pointer == '#') | |
1337 | ++input_line_pointer; | |
1338 | ||
1339 | name = input_line_pointer; | |
1340 | c = get_symbol_end (); | |
1341 | sym = symbol_find_or_make (name); | |
1342 | *input_line_pointer = c; | |
1343 | ||
1344 | SKIP_WHITESPACE (); | |
1345 | if (*input_line_pointer != ',') | |
1346 | { | |
1347 | as_bad ("expected comma after name in .vtable_entry"); | |
1348 | ignore_rest_of_line (); | |
904a31bf | 1349 | return NULL; |
252b5132 RH |
1350 | } |
1351 | ||
1352 | ++input_line_pointer; | |
1353 | if (*input_line_pointer == '#') | |
1354 | ++input_line_pointer; | |
1355 | ||
1356 | offset = get_absolute_expression (); | |
1357 | ||
252b5132 | 1358 | demand_empty_rest_of_line (); |
904a31bf AM |
1359 | |
1360 | return fix_new (frag_now, frag_now_fix (), 0, sym, offset, 0, | |
1361 | BFD_RELOC_VTABLE_ENTRY); | |
252b5132 RH |
1362 | } |
1363 | ||
1364 | void | |
dbe2df79 | 1365 | elf_obj_read_begin_hook (void) |
252b5132 RH |
1366 | { |
1367 | #ifdef NEED_ECOFF_DEBUG | |
1368 | if (ECOFF_DEBUGGING) | |
1369 | ecoff_read_begin_hook (); | |
1370 | #endif | |
1371 | } | |
1372 | ||
1373 | void | |
dbe2df79 | 1374 | elf_obj_symbol_new_hook (symbolS *symbolP) |
252b5132 | 1375 | { |
49309057 ILT |
1376 | struct elf_obj_sy *sy_obj; |
1377 | ||
1378 | sy_obj = symbol_get_obj (symbolP); | |
1379 | sy_obj->size = NULL; | |
1380 | sy_obj->versioned_name = NULL; | |
252b5132 RH |
1381 | |
1382 | #ifdef NEED_ECOFF_DEBUG | |
1383 | if (ECOFF_DEBUGGING) | |
1384 | ecoff_symbol_new_hook (symbolP); | |
1385 | #endif | |
1386 | } | |
1387 | ||
8fd3e36b AM |
1388 | /* When setting one symbol equal to another, by default we probably |
1389 | want them to have the same "size", whatever it means in the current | |
1390 | context. */ | |
1391 | ||
1392 | void | |
dbe2df79 | 1393 | elf_copy_symbol_attributes (symbolS *dest, symbolS *src) |
8fd3e36b | 1394 | { |
060adf0e AM |
1395 | struct elf_obj_sy *srcelf = symbol_get_obj (src); |
1396 | struct elf_obj_sy *destelf = symbol_get_obj (dest); | |
1397 | if (srcelf->size) | |
1398 | { | |
1399 | if (destelf->size == NULL) | |
dbe2df79 | 1400 | destelf->size = xmalloc (sizeof (expressionS)); |
060adf0e AM |
1401 | *destelf->size = *srcelf->size; |
1402 | } | |
1403 | else | |
1404 | { | |
1405 | if (destelf->size != NULL) | |
1406 | free (destelf->size); | |
1407 | destelf->size = NULL; | |
1408 | } | |
1409 | S_SET_SIZE (dest, S_GET_SIZE (src)); | |
26eb4093 JJ |
1410 | /* Don't copy visibility. */ |
1411 | S_SET_OTHER (dest, (ELF_ST_VISIBILITY (S_GET_OTHER (dest)) | |
1412 | | (S_GET_OTHER (src) & ~ELF_ST_VISIBILITY (-1)))); | |
8fd3e36b AM |
1413 | } |
1414 | ||
252b5132 | 1415 | void |
dbe2df79 | 1416 | obj_elf_version (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1417 | { |
1418 | char *name; | |
1419 | unsigned int c; | |
252b5132 RH |
1420 | char *p; |
1421 | asection *seg = now_seg; | |
1422 | subsegT subseg = now_subseg; | |
1423 | Elf_Internal_Note i_note; | |
1424 | Elf_External_Note e_note; | |
dbe2df79 | 1425 | asection *note_secp = NULL; |
252b5132 RH |
1426 | |
1427 | SKIP_WHITESPACE (); | |
1428 | if (*input_line_pointer == '\"') | |
1429 | { | |
6afdfa61 NC |
1430 | unsigned int len; |
1431 | ||
bf514e21 | 1432 | ++input_line_pointer; /* -> 1st char of string. */ |
252b5132 RH |
1433 | name = input_line_pointer; |
1434 | ||
1435 | while (is_a_char (c = next_char_of_string ())) | |
1436 | ; | |
1437 | c = *input_line_pointer; | |
1438 | *input_line_pointer = '\0'; | |
1439 | *(input_line_pointer - 1) = '\0'; | |
1440 | *input_line_pointer = c; | |
1441 | ||
6afdfa61 | 1442 | /* Create the .note section. */ |
252b5132 RH |
1443 | note_secp = subseg_new (".note", 0); |
1444 | bfd_set_section_flags (stdoutput, | |
1445 | note_secp, | |
1446 | SEC_HAS_CONTENTS | SEC_READONLY); | |
1447 | ||
6afdfa61 NC |
1448 | /* Process the version string. */ |
1449 | len = strlen (name) + 1; | |
252b5132 | 1450 | |
6afdfa61 NC |
1451 | /* PR 3456: Although the name field is padded out to an 4-byte |
1452 | boundary, the namesz field should not be adjusted. */ | |
1453 | i_note.namesz = len; | |
1454 | i_note.descsz = 0; /* No description. */ | |
252b5132 RH |
1455 | i_note.type = NT_VERSION; |
1456 | p = frag_more (sizeof (e_note.namesz)); | |
dbe2df79 | 1457 | md_number_to_chars (p, i_note.namesz, sizeof (e_note.namesz)); |
252b5132 | 1458 | p = frag_more (sizeof (e_note.descsz)); |
dbe2df79 | 1459 | md_number_to_chars (p, i_note.descsz, sizeof (e_note.descsz)); |
252b5132 | 1460 | p = frag_more (sizeof (e_note.type)); |
dbe2df79 | 1461 | md_number_to_chars (p, i_note.type, sizeof (e_note.type)); |
6afdfa61 | 1462 | p = frag_more (len); |
5ab504f9 | 1463 | memcpy (p, name, len); |
252b5132 | 1464 | |
252b5132 RH |
1465 | frag_align (2, 0, 0); |
1466 | ||
1467 | subseg_set (seg, subseg); | |
1468 | } | |
1469 | else | |
6afdfa61 NC |
1470 | as_bad (_("expected quoted string")); |
1471 | ||
252b5132 RH |
1472 | demand_empty_rest_of_line (); |
1473 | } | |
1474 | ||
1475 | static void | |
dbe2df79 | 1476 | obj_elf_size (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1477 | { |
1478 | char *name = input_line_pointer; | |
1479 | char c = get_symbol_end (); | |
1480 | char *p; | |
1481 | expressionS exp; | |
1482 | symbolS *sym; | |
1483 | ||
1484 | p = input_line_pointer; | |
1485 | *p = c; | |
1486 | SKIP_WHITESPACE (); | |
1487 | if (*input_line_pointer != ',') | |
1488 | { | |
1489 | *p = 0; | |
1490 | as_bad (_("expected comma after name `%s' in .size directive"), name); | |
1491 | *p = c; | |
1492 | ignore_rest_of_line (); | |
1493 | return; | |
1494 | } | |
1495 | input_line_pointer++; | |
1496 | expression (&exp); | |
1497 | if (exp.X_op == O_absent) | |
1498 | { | |
1499 | as_bad (_("missing expression in .size directive")); | |
1500 | exp.X_op = O_constant; | |
1501 | exp.X_add_number = 0; | |
1502 | } | |
1503 | *p = 0; | |
1504 | sym = symbol_find_or_make (name); | |
1505 | *p = c; | |
1506 | if (exp.X_op == O_constant) | |
c538998c JJ |
1507 | { |
1508 | S_SET_SIZE (sym, exp.X_add_number); | |
1509 | if (symbol_get_obj (sym)->size) | |
1510 | { | |
1511 | xfree (symbol_get_obj (sym)->size); | |
1512 | symbol_get_obj (sym)->size = NULL; | |
1513 | } | |
1514 | } | |
252b5132 RH |
1515 | else |
1516 | { | |
dbe2df79 | 1517 | symbol_get_obj (sym)->size = xmalloc (sizeof (expressionS)); |
49309057 | 1518 | *symbol_get_obj (sym)->size = exp; |
252b5132 RH |
1519 | } |
1520 | demand_empty_rest_of_line (); | |
1521 | } | |
1522 | ||
1523 | /* Handle the ELF .type pseudo-op. This sets the type of a symbol. | |
aa8c34c3 | 1524 | There are five syntaxes: |
fa306131 | 1525 | |
252b5132 RH |
1526 | The first (used on Solaris) is |
1527 | .type SYM,#function | |
1528 | The second (used on UnixWare) is | |
1529 | .type SYM,@function | |
1530 | The third (reportedly to be used on Irix 6.0) is | |
1531 | .type SYM STT_FUNC | |
1532 | The fourth (used on NetBSD/Arm and Linux/ARM) is | |
1533 | .type SYM,%function | |
aa8c34c3 JE |
1534 | The fifth (used on SVR4/860) is |
1535 | .type SYM,"function" | |
252b5132 RH |
1536 | */ |
1537 | ||
1538 | static void | |
dbe2df79 | 1539 | obj_elf_type (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1540 | { |
1541 | char *name; | |
1542 | char c; | |
1543 | int type; | |
1544 | const char *typename; | |
1545 | symbolS *sym; | |
904a31bf | 1546 | elf_symbol_type *elfsym; |
252b5132 RH |
1547 | |
1548 | name = input_line_pointer; | |
1549 | c = get_symbol_end (); | |
1550 | sym = symbol_find_or_make (name); | |
904a31bf | 1551 | elfsym = (elf_symbol_type *) symbol_get_bfdsym (sym); |
252b5132 RH |
1552 | *input_line_pointer = c; |
1553 | ||
1554 | SKIP_WHITESPACE (); | |
1555 | if (*input_line_pointer == ',') | |
1556 | ++input_line_pointer; | |
1557 | ||
1558 | SKIP_WHITESPACE (); | |
1559 | if ( *input_line_pointer == '#' | |
1560 | || *input_line_pointer == '@' | |
aa8c34c3 | 1561 | || *input_line_pointer == '"' |
252b5132 RH |
1562 | || *input_line_pointer == '%') |
1563 | ++input_line_pointer; | |
1564 | ||
1565 | typename = input_line_pointer; | |
1566 | c = get_symbol_end (); | |
1567 | ||
1568 | type = 0; | |
1569 | if (strcmp (typename, "function") == 0 | |
1570 | || strcmp (typename, "STT_FUNC") == 0) | |
1571 | type = BSF_FUNCTION; | |
1572 | else if (strcmp (typename, "object") == 0 | |
1573 | || strcmp (typename, "STT_OBJECT") == 0) | |
1574 | type = BSF_OBJECT; | |
b9734f35 JJ |
1575 | else if (strcmp (typename, "tls_object") == 0 |
1576 | || strcmp (typename, "STT_TLS") == 0) | |
1577 | type = BSF_OBJECT | BSF_THREAD_LOCAL; | |
e7b9a8c1 L |
1578 | else if (strcmp (typename, "notype") == 0 |
1579 | || strcmp (typename, "STT_NOTYPE") == 0) | |
1580 | ; | |
904a31bf AM |
1581 | #ifdef md_elf_symbol_type |
1582 | else if ((type = md_elf_symbol_type (typename, sym, elfsym)) != -1) | |
1583 | ; | |
1584 | #endif | |
252b5132 | 1585 | else |
6ce8b369 | 1586 | as_bad (_("unrecognized symbol type \"%s\""), typename); |
252b5132 RH |
1587 | |
1588 | *input_line_pointer = c; | |
1589 | ||
aa8c34c3 JE |
1590 | if (*input_line_pointer == '"') |
1591 | ++input_line_pointer; | |
1592 | ||
904a31bf | 1593 | elfsym->symbol.flags |= type; |
252b5132 RH |
1594 | |
1595 | demand_empty_rest_of_line (); | |
1596 | } | |
1597 | ||
1598 | static void | |
dbe2df79 | 1599 | obj_elf_ident (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1600 | { |
1601 | static segT comment_section; | |
1602 | segT old_section = now_seg; | |
1603 | int old_subsection = now_subseg; | |
1604 | ||
5f91fe03 ILT |
1605 | #ifdef md_flush_pending_output |
1606 | md_flush_pending_output (); | |
1607 | #endif | |
1608 | ||
252b5132 RH |
1609 | if (!comment_section) |
1610 | { | |
1611 | char *p; | |
1612 | comment_section = subseg_new (".comment", 0); | |
1613 | bfd_set_section_flags (stdoutput, comment_section, | |
1614 | SEC_READONLY | SEC_HAS_CONTENTS); | |
1615 | p = frag_more (1); | |
1616 | *p = 0; | |
1617 | } | |
1618 | else | |
1619 | subseg_set (comment_section, 0); | |
1620 | stringer (1); | |
1621 | subseg_set (old_section, old_subsection); | |
1622 | } | |
1623 | ||
1624 | #ifdef INIT_STAB_SECTION | |
1625 | ||
1626 | /* The first entry in a .stabs section is special. */ | |
1627 | ||
1628 | void | |
dbe2df79 | 1629 | obj_elf_init_stab_section (segT seg) |
252b5132 RH |
1630 | { |
1631 | char *file; | |
1632 | char *p; | |
1633 | char *stabstr_name; | |
1634 | unsigned int stroff; | |
1635 | ||
1636 | /* Force the section to align to a longword boundary. Without this, | |
1637 | UnixWare ar crashes. */ | |
1638 | bfd_set_section_alignment (stdoutput, seg, 2); | |
1639 | ||
bf514e21 | 1640 | /* Make space for this first symbol. */ |
252b5132 | 1641 | p = frag_more (12); |
bf514e21 | 1642 | /* Zero it out. */ |
252b5132 | 1643 | memset (p, 0, 12); |
dbe2df79 AM |
1644 | as_where (&file, NULL); |
1645 | stabstr_name = xmalloc (strlen (segment_name (seg)) + 4); | |
252b5132 RH |
1646 | strcpy (stabstr_name, segment_name (seg)); |
1647 | strcat (stabstr_name, "str"); | |
1648 | stroff = get_stab_string_offset (file, stabstr_name); | |
1649 | know (stroff == 1); | |
1650 | md_number_to_chars (p, stroff, 4); | |
1651 | seg_info (seg)->stabu.p = p; | |
1652 | } | |
1653 | ||
1654 | #endif | |
1655 | ||
1656 | /* Fill in the counts in the first entry in a .stabs section. */ | |
1657 | ||
1658 | static void | |
dbe2df79 | 1659 | adjust_stab_sections (bfd *abfd, asection *sec, void *xxx ATTRIBUTE_UNUSED) |
252b5132 RH |
1660 | { |
1661 | char *name; | |
1662 | asection *strsec; | |
1663 | char *p; | |
1664 | int strsz, nsyms; | |
1665 | ||
1666 | if (strncmp (".stab", sec->name, 5)) | |
1667 | return; | |
1668 | if (!strcmp ("str", sec->name + strlen (sec->name) - 3)) | |
1669 | return; | |
1670 | ||
dbe2df79 | 1671 | name = alloca (strlen (sec->name) + 4); |
252b5132 RH |
1672 | strcpy (name, sec->name); |
1673 | strcat (name, "str"); | |
1674 | strsec = bfd_get_section_by_name (abfd, name); | |
1675 | if (strsec) | |
1676 | strsz = bfd_section_size (abfd, strsec); | |
1677 | else | |
1678 | strsz = 0; | |
1679 | nsyms = bfd_section_size (abfd, sec) / 12 - 1; | |
1680 | ||
1681 | p = seg_info (sec)->stabu.p; | |
1682 | assert (p != 0); | |
1683 | ||
dbe2df79 AM |
1684 | bfd_h_put_16 (abfd, nsyms, p + 6); |
1685 | bfd_h_put_32 (abfd, strsz, p + 8); | |
252b5132 RH |
1686 | } |
1687 | ||
1688 | #ifdef NEED_ECOFF_DEBUG | |
1689 | ||
1690 | /* This function is called by the ECOFF code. It is supposed to | |
1691 | record the external symbol information so that the backend can | |
1692 | write it out correctly. The ELF backend doesn't actually handle | |
1693 | this at the moment, so we do it ourselves. We save the information | |
1694 | in the symbol. */ | |
1695 | ||
1696 | void | |
dbe2df79 | 1697 | elf_ecoff_set_ext (symbolS *sym, struct ecoff_extr *ext) |
252b5132 | 1698 | { |
dbe2df79 | 1699 | symbol_get_bfdsym (sym)->udata.p = ext; |
252b5132 RH |
1700 | } |
1701 | ||
1702 | /* This function is called by bfd_ecoff_debug_externals. It is | |
1703 | supposed to *EXT to the external symbol information, and return | |
1704 | whether the symbol should be used at all. */ | |
1705 | ||
b34976b6 | 1706 | static bfd_boolean |
dbe2df79 | 1707 | elf_get_extr (asymbol *sym, EXTR *ext) |
252b5132 RH |
1708 | { |
1709 | if (sym->udata.p == NULL) | |
b34976b6 | 1710 | return FALSE; |
252b5132 | 1711 | *ext = *(EXTR *) sym->udata.p; |
b34976b6 | 1712 | return TRUE; |
252b5132 RH |
1713 | } |
1714 | ||
1715 | /* This function is called by bfd_ecoff_debug_externals. It has | |
1716 | nothing to do for ELF. */ | |
1717 | ||
252b5132 | 1718 | static void |
dbe2df79 AM |
1719 | elf_set_index (asymbol *sym ATTRIBUTE_UNUSED, |
1720 | bfd_size_type indx ATTRIBUTE_UNUSED) | |
252b5132 RH |
1721 | { |
1722 | } | |
1723 | ||
1724 | #endif /* NEED_ECOFF_DEBUG */ | |
1725 | ||
1726 | void | |
dbe2df79 | 1727 | elf_frob_symbol (symbolS *symp, int *puntp) |
252b5132 | 1728 | { |
49309057 ILT |
1729 | struct elf_obj_sy *sy_obj; |
1730 | ||
252b5132 RH |
1731 | #ifdef NEED_ECOFF_DEBUG |
1732 | if (ECOFF_DEBUGGING) | |
1733 | ecoff_frob_symbol (symp); | |
1734 | #endif | |
1735 | ||
49309057 ILT |
1736 | sy_obj = symbol_get_obj (symp); |
1737 | ||
1738 | if (sy_obj->size != NULL) | |
252b5132 | 1739 | { |
49309057 | 1740 | switch (sy_obj->size->X_op) |
252b5132 RH |
1741 | { |
1742 | case O_subtract: | |
1743 | S_SET_SIZE (symp, | |
49309057 ILT |
1744 | (S_GET_VALUE (sy_obj->size->X_add_symbol) |
1745 | + sy_obj->size->X_add_number | |
1746 | - S_GET_VALUE (sy_obj->size->X_op_symbol))); | |
252b5132 RH |
1747 | break; |
1748 | case O_constant: | |
1749 | S_SET_SIZE (symp, | |
49309057 ILT |
1750 | (S_GET_VALUE (sy_obj->size->X_add_symbol) |
1751 | + sy_obj->size->X_add_number)); | |
252b5132 RH |
1752 | break; |
1753 | default: | |
1754 | as_bad (_(".size expression too complicated to fix up")); | |
1755 | break; | |
1756 | } | |
49309057 ILT |
1757 | free (sy_obj->size); |
1758 | sy_obj->size = NULL; | |
252b5132 RH |
1759 | } |
1760 | ||
49309057 | 1761 | if (sy_obj->versioned_name != NULL) |
252b5132 | 1762 | { |
79082ff0 L |
1763 | char *p; |
1764 | ||
1765 | p = strchr (sy_obj->versioned_name, ELF_VER_CHR); | |
1766 | know (p != NULL); | |
1767 | ||
252b5132 RH |
1768 | /* This symbol was given a new name with the .symver directive. |
1769 | ||
13c56984 AM |
1770 | If this is an external reference, just rename the symbol to |
1771 | include the version string. This will make the relocs be | |
1772 | against the correct versioned symbol. | |
252b5132 RH |
1773 | |
1774 | If this is a definition, add an alias. FIXME: Using an alias | |
1775 | will permit the debugging information to refer to the right | |
1776 | symbol. However, it's not clear whether it is the best | |
1777 | approach. */ | |
1778 | ||
1779 | if (! S_IS_DEFINED (symp)) | |
1780 | { | |
252b5132 | 1781 | /* Verify that the name isn't using the @@ syntax--this is |
13c56984 AM |
1782 | reserved for definitions of the default version to link |
1783 | against. */ | |
252b5132 RH |
1784 | if (p[1] == ELF_VER_CHR) |
1785 | { | |
1786 | as_bad (_("invalid attempt to declare external version name as default in symbol `%s'"), | |
49309057 | 1787 | sy_obj->versioned_name); |
b34976b6 | 1788 | *puntp = TRUE; |
252b5132 | 1789 | } |
49309057 | 1790 | S_SET_NAME (symp, sy_obj->versioned_name); |
252b5132 RH |
1791 | } |
1792 | else | |
1793 | { | |
dbe2df79 | 1794 | if (p[1] == ELF_VER_CHR && p[2] == ELF_VER_CHR) |
79082ff0 L |
1795 | { |
1796 | size_t l; | |
1797 | ||
1798 | /* The @@@ syntax is a special case. It renames the | |
1799 | symbol name to versioned_name with one `@' removed. */ | |
1800 | l = strlen (&p[3]) + 1; | |
dbe2df79 | 1801 | memmove (&p[2], &p[3], l); |
79082ff0 L |
1802 | S_SET_NAME (symp, sy_obj->versioned_name); |
1803 | } | |
1804 | else | |
1805 | { | |
1806 | symbolS *symp2; | |
252b5132 | 1807 | |
79082ff0 L |
1808 | /* FIXME: Creating a new symbol here is risky. We're |
1809 | in the final loop over the symbol table. We can | |
1810 | get away with it only because the symbol goes to | |
1811 | the end of the list, where the loop will still see | |
1812 | it. It would probably be better to do this in | |
1813 | obj_frob_file_before_adjust. */ | |
252b5132 | 1814 | |
79082ff0 | 1815 | symp2 = symbol_find_or_make (sy_obj->versioned_name); |
252b5132 | 1816 | |
79082ff0 | 1817 | /* Now we act as though we saw symp2 = sym. */ |
252b5132 | 1818 | |
79082ff0 | 1819 | S_SET_SEGMENT (symp2, S_GET_SEGMENT (symp)); |
252b5132 | 1820 | |
79082ff0 L |
1821 | /* Subtracting out the frag address here is a hack |
1822 | because we are in the middle of the final loop. */ | |
1823 | S_SET_VALUE (symp2, | |
1824 | (S_GET_VALUE (symp) | |
1825 | - symbol_get_frag (symp)->fr_address)); | |
252b5132 | 1826 | |
79082ff0 | 1827 | symbol_set_frag (symp2, symbol_get_frag (symp)); |
252b5132 | 1828 | |
79082ff0 L |
1829 | /* This will copy over the size information. */ |
1830 | copy_symbol_attributes (symp2, symp); | |
252b5132 | 1831 | |
26eb4093 JJ |
1832 | S_SET_OTHER (symp2, S_GET_OTHER (symp)); |
1833 | ||
79082ff0 L |
1834 | if (S_IS_WEAK (symp)) |
1835 | S_SET_WEAK (symp2); | |
252b5132 | 1836 | |
79082ff0 L |
1837 | if (S_IS_EXTERNAL (symp)) |
1838 | S_SET_EXTERNAL (symp2); | |
1839 | } | |
252b5132 RH |
1840 | } |
1841 | } | |
1842 | ||
1843 | /* Double check weak symbols. */ | |
49309057 | 1844 | if (S_IS_WEAK (symp)) |
252b5132 RH |
1845 | { |
1846 | if (S_IS_COMMON (symp)) | |
6ce8b369 | 1847 | as_bad (_("symbol `%s' can not be both weak and common"), |
252b5132 RH |
1848 | S_GET_NAME (symp)); |
1849 | } | |
1850 | ||
1851 | #ifdef TC_MIPS | |
1852 | /* The Irix 5 and 6 assemblers set the type of any common symbol and | |
1853 | any undefined non-function symbol to STT_OBJECT. We try to be | |
1854 | compatible, since newer Irix 5 and 6 linkers care. However, we | |
1855 | only set undefined symbols to be STT_OBJECT if we are on Irix, | |
1856 | because that is the only time gcc will generate the necessary | |
1857 | .global directives to mark functions. */ | |
1858 | ||
1859 | if (S_IS_COMMON (symp)) | |
49309057 | 1860 | symbol_get_bfdsym (symp)->flags |= BSF_OBJECT; |
252b5132 RH |
1861 | |
1862 | if (strstr (TARGET_OS, "irix") != NULL | |
49309057 ILT |
1863 | && ! S_IS_DEFINED (symp) |
1864 | && (symbol_get_bfdsym (symp)->flags & BSF_FUNCTION) == 0) | |
1865 | symbol_get_bfdsym (symp)->flags |= BSF_OBJECT; | |
252b5132 | 1866 | #endif |
252b5132 RH |
1867 | } |
1868 | ||
060adf0e AM |
1869 | struct group_list |
1870 | { | |
1871 | asection **head; /* Section lists. */ | |
1872 | unsigned int *elt_count; /* Number of sections in each list. */ | |
1873 | unsigned int num_group; /* Number of lists. */ | |
1874 | }; | |
1875 | ||
1876 | /* Called via bfd_map_over_sections. If SEC is a member of a group, | |
1877 | add it to a list of sections belonging to the group. INF is a | |
1878 | pointer to a struct group_list, which is where we store the head of | |
1879 | each list. */ | |
1880 | ||
1881 | static void | |
dbe2df79 | 1882 | build_group_lists (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *inf) |
060adf0e | 1883 | { |
dbe2df79 | 1884 | struct group_list *list = inf; |
aa1f4858 | 1885 | const char *group_name = elf_group_name (sec); |
060adf0e AM |
1886 | unsigned int i; |
1887 | ||
1888 | if (group_name == NULL) | |
1889 | return; | |
1890 | ||
1891 | /* If this group already has a list, add the section to the head of | |
1892 | the list. */ | |
1893 | for (i = 0; i < list->num_group; i++) | |
1894 | { | |
aa1f4858 | 1895 | if (strcmp (group_name, elf_group_name (list->head[i])) == 0) |
060adf0e | 1896 | { |
aa1f4858 | 1897 | elf_next_in_group (sec) = list->head[i]; |
060adf0e AM |
1898 | list->head[i] = sec; |
1899 | list->elt_count[i] += 1; | |
1900 | return; | |
1901 | } | |
1902 | } | |
1903 | ||
1904 | /* New group. Make the arrays bigger in chunks to minimize calls to | |
1905 | realloc. */ | |
1906 | i = list->num_group; | |
1907 | if ((i & 127) == 0) | |
1908 | { | |
1909 | unsigned int newsize = i + 128; | |
1910 | list->head = xrealloc (list->head, newsize * sizeof (*list->head)); | |
1911 | list->elt_count = xrealloc (list->elt_count, | |
1912 | newsize * sizeof (*list->elt_count)); | |
1913 | } | |
1914 | list->head[i] = sec; | |
1915 | list->elt_count[i] = 1; | |
1916 | list->num_group += 1; | |
1917 | } | |
1918 | ||
252b5132 | 1919 | void |
dbe2df79 | 1920 | elf_frob_file (void) |
252b5132 | 1921 | { |
060adf0e AM |
1922 | struct group_list list; |
1923 | unsigned int i; | |
1924 | ||
dbe2df79 | 1925 | bfd_map_over_sections (stdoutput, adjust_stab_sections, NULL); |
252b5132 | 1926 | |
060adf0e AM |
1927 | /* Go find section groups. */ |
1928 | list.num_group = 0; | |
1929 | list.head = NULL; | |
1930 | list.elt_count = NULL; | |
dbe2df79 | 1931 | bfd_map_over_sections (stdoutput, build_group_lists, &list); |
060adf0e AM |
1932 | |
1933 | /* Make the SHT_GROUP sections that describe each section group. We | |
1934 | can't set up the section contents here yet, because elf section | |
1935 | indices have yet to be calculated. elf.c:set_group_contents does | |
1936 | the rest of the work. */ | |
1937 | for (i = 0; i < list.num_group; i++) | |
1938 | { | |
aa1f4858 | 1939 | const char *group_name = elf_group_name (list.head[i]); |
9758f3fc | 1940 | const char *sec_name; |
060adf0e AM |
1941 | asection *s; |
1942 | flagword flags; | |
9758f3fc AM |
1943 | struct symbol *sy; |
1944 | int has_sym; | |
587aac4e | 1945 | bfd_size_type size; |
060adf0e | 1946 | |
060adf0e | 1947 | flags = SEC_READONLY | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_GROUP; |
d2dab548 | 1948 | for (s = list.head[i]; s != NULL; s = elf_next_in_group (s)) |
68bfbfcc | 1949 | if ((s->flags ^ flags) & SEC_LINK_ONCE) |
d2dab548 AM |
1950 | { |
1951 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
1952 | if (s != list.head[i]) | |
1953 | { | |
1954 | as_warn (_("assuming all members of group `%s' are COMDAT"), | |
1955 | group_name); | |
1956 | break; | |
1957 | } | |
1958 | } | |
1959 | ||
9758f3fc AM |
1960 | sec_name = group_name; |
1961 | sy = symbol_find_exact (group_name); | |
1962 | has_sym = 0; | |
1963 | if (sy != NULL | |
1964 | && (sy == symbol_lastP | |
1965 | || (sy->sy_next != NULL | |
1966 | && sy->sy_next->sy_previous == sy))) | |
1967 | { | |
1968 | has_sym = 1; | |
1969 | sec_name = ".group"; | |
1970 | } | |
1971 | s = subseg_force_new (sec_name, 0); | |
060adf0e AM |
1972 | if (s == NULL |
1973 | || !bfd_set_section_flags (stdoutput, s, flags) | |
1974 | || !bfd_set_section_alignment (stdoutput, s, 2)) | |
1975 | { | |
1976 | as_fatal (_("can't create group: %s"), | |
1977 | bfd_errmsg (bfd_get_error ())); | |
1978 | } | |
2f89ff8d | 1979 | elf_section_type (s) = SHT_GROUP; |
060adf0e | 1980 | |
aa1f4858 AM |
1981 | /* Pass a pointer to the first section in this group. */ |
1982 | elf_next_in_group (s) = list.head[i]; | |
9758f3fc AM |
1983 | if (has_sym) |
1984 | elf_group_id (s) = sy->bsym; | |
060adf0e | 1985 | |
587aac4e AM |
1986 | size = 4 * (list.elt_count[i] + 1); |
1987 | bfd_set_section_size (stdoutput, s, size); | |
b7712f8d | 1988 | s->contents = (unsigned char *) frag_more (size); |
060adf0e AM |
1989 | frag_now->fr_fix = frag_now_fix_octets (); |
1990 | } | |
1991 | ||
252b5132 RH |
1992 | #ifdef elf_tc_final_processing |
1993 | elf_tc_final_processing (); | |
1994 | #endif | |
1995 | } | |
1996 | ||
4a1805b1 | 1997 | /* It removes any unneeded versioned symbols from the symbol table. */ |
339681c0 L |
1998 | |
1999 | void | |
dbe2df79 | 2000 | elf_frob_file_before_adjust (void) |
339681c0 L |
2001 | { |
2002 | if (symbol_rootP) | |
2003 | { | |
2004 | symbolS *symp; | |
2005 | ||
2006 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) | |
00e6e13d | 2007 | if (!S_IS_DEFINED (symp)) |
79082ff0 | 2008 | { |
00e6e13d | 2009 | if (symbol_get_obj (symp)->versioned_name) |
79082ff0 L |
2010 | { |
2011 | char *p; | |
2012 | ||
2013 | /* The @@@ syntax is a special case. If the symbol is | |
2014 | not defined, 2 `@'s will be removed from the | |
2015 | versioned_name. */ | |
2016 | ||
2017 | p = strchr (symbol_get_obj (symp)->versioned_name, | |
2018 | ELF_VER_CHR); | |
2019 | know (p != NULL); | |
dbe2df79 | 2020 | if (p[1] == ELF_VER_CHR && p[2] == ELF_VER_CHR) |
79082ff0 L |
2021 | { |
2022 | size_t l = strlen (&p[3]) + 1; | |
dbe2df79 | 2023 | memmove (&p[1], &p[3], l); |
79082ff0 L |
2024 | } |
2025 | if (symbol_used_p (symp) == 0 | |
2026 | && symbol_used_in_reloc_p (symp) == 0) | |
2027 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
2028 | } | |
00e6e13d JJ |
2029 | |
2030 | /* If there was .weak foo, but foo was neither defined nor | |
2031 | used anywhere, remove it. */ | |
2032 | ||
2033 | else if (S_IS_WEAK (symp) | |
2034 | && symbol_used_p (symp) == 0 | |
2035 | && symbol_used_in_reloc_p (symp) == 0) | |
2036 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
79082ff0 | 2037 | } |
339681c0 L |
2038 | } |
2039 | } | |
2040 | ||
252b5132 RH |
2041 | /* It is required that we let write_relocs have the opportunity to |
2042 | optimize away fixups before output has begun, since it is possible | |
2043 | to eliminate all fixups for a section and thus we never should | |
2044 | have generated the relocation section. */ | |
2045 | ||
2046 | void | |
dbe2df79 | 2047 | elf_frob_file_after_relocs (void) |
252b5132 RH |
2048 | { |
2049 | #ifdef NEED_ECOFF_DEBUG | |
2050 | if (ECOFF_DEBUGGING) | |
2051 | /* Generate the ECOFF debugging information. */ | |
2052 | { | |
2053 | const struct ecoff_debug_swap *debug_swap; | |
2054 | struct ecoff_debug_info debug; | |
2055 | char *buf; | |
2056 | asection *sec; | |
2057 | ||
2058 | debug_swap | |
2059 | = get_elf_backend_data (stdoutput)->elf_backend_ecoff_debug_swap; | |
dbe2df79 | 2060 | know (debug_swap != NULL); |
252b5132 RH |
2061 | ecoff_build_debug (&debug.symbolic_header, &buf, debug_swap); |
2062 | ||
2063 | /* Set up the pointers in debug. */ | |
2064 | #define SET(ptr, offset, type) \ | |
2065 | debug.ptr = (type) (buf + debug.symbolic_header.offset) | |
2066 | ||
2067 | SET (line, cbLineOffset, unsigned char *); | |
dbe2df79 AM |
2068 | SET (external_dnr, cbDnOffset, void *); |
2069 | SET (external_pdr, cbPdOffset, void *); | |
2070 | SET (external_sym, cbSymOffset, void *); | |
2071 | SET (external_opt, cbOptOffset, void *); | |
252b5132 RH |
2072 | SET (external_aux, cbAuxOffset, union aux_ext *); |
2073 | SET (ss, cbSsOffset, char *); | |
dbe2df79 AM |
2074 | SET (external_fdr, cbFdOffset, void *); |
2075 | SET (external_rfd, cbRfdOffset, void *); | |
252b5132 RH |
2076 | /* ssext and external_ext are set up just below. */ |
2077 | ||
2078 | #undef SET | |
2079 | ||
2080 | /* Set up the external symbols. */ | |
2081 | debug.ssext = debug.ssext_end = NULL; | |
2082 | debug.external_ext = debug.external_ext_end = NULL; | |
b34976b6 | 2083 | if (! bfd_ecoff_debug_externals (stdoutput, &debug, debug_swap, TRUE, |
252b5132 | 2084 | elf_get_extr, elf_set_index)) |
6ce8b369 | 2085 | as_fatal (_("failed to set up debugging information: %s"), |
252b5132 RH |
2086 | bfd_errmsg (bfd_get_error ())); |
2087 | ||
2088 | sec = bfd_get_section_by_name (stdoutput, ".mdebug"); | |
2089 | assert (sec != NULL); | |
2090 | ||
b34976b6 | 2091 | know (!stdoutput->output_has_begun); |
252b5132 RH |
2092 | |
2093 | /* We set the size of the section, call bfd_set_section_contents | |
2094 | to force the ELF backend to allocate a file position, and then | |
2095 | write out the data. FIXME: Is this really the best way to do | |
2096 | this? */ | |
587aac4e AM |
2097 | bfd_set_section_size |
2098 | (stdoutput, sec, bfd_ecoff_debug_size (stdoutput, &debug, debug_swap)); | |
252b5132 | 2099 | |
5f91fe03 | 2100 | /* Pass BUF to bfd_set_section_contents because this will |
13c56984 AM |
2101 | eventually become a call to fwrite, and ISO C prohibits |
2102 | passing a NULL pointer to a stdio function even if the | |
2103 | pointer will not be used. */ | |
dbe2df79 | 2104 | if (! bfd_set_section_contents (stdoutput, sec, buf, 0, 0)) |
6ce8b369 | 2105 | as_fatal (_("can't start writing .mdebug section: %s"), |
252b5132 RH |
2106 | bfd_errmsg (bfd_get_error ())); |
2107 | ||
b34976b6 | 2108 | know (stdoutput->output_has_begun); |
252b5132 RH |
2109 | know (sec->filepos != 0); |
2110 | ||
2111 | if (! bfd_ecoff_write_debug (stdoutput, &debug, debug_swap, | |
2112 | sec->filepos)) | |
6ce8b369 | 2113 | as_fatal (_("could not write .mdebug section: %s"), |
252b5132 RH |
2114 | bfd_errmsg (bfd_get_error ())); |
2115 | } | |
2116 | #endif /* NEED_ECOFF_DEBUG */ | |
2117 | } | |
2118 | ||
2119 | #ifdef SCO_ELF | |
2120 | ||
aaa2624b | 2121 | /* Heavily plagiarized from obj_elf_version. The idea is to emit the |
252b5132 RH |
2122 | SCO specific identifier in the .notes section to satisfy the SCO |
2123 | linker. | |
2124 | ||
2125 | This looks more complicated than it really is. As opposed to the | |
2126 | "obvious" solution, this should handle the cross dev cases | |
2127 | correctly. (i.e, hosting on a 64 bit big endian processor, but | |
2128 | generating SCO Elf code) Efficiency isn't a concern, as there | |
2129 | should be exactly one of these sections per object module. | |
2130 | ||
2131 | SCO OpenServer 5 identifies it's ELF modules with a standard ELF | |
2132 | .note section. | |
2133 | ||
fa306131 AM |
2134 | int_32 namesz = 4 ; Name size |
2135 | int_32 descsz = 12 ; Descriptive information | |
2136 | int_32 type = 1 ; | |
2137 | char name[4] = "SCO" ; Originator name ALWAYS SCO + NULL | |
252b5132 RH |
2138 | int_32 version = (major ver # << 16) | version of tools ; |
2139 | int_32 source = (tool_id << 16 ) | 1 ; | |
2140 | int_32 info = 0 ; These are set by the SCO tools, but we | |
13c56984 | 2141 | don't know enough about the source |
252b5132 RH |
2142 | environment to set them. SCO ld currently |
2143 | ignores them, and recommends we set them | |
2144 | to zero. */ | |
2145 | ||
2146 | #define SCO_MAJOR_VERSION 0x1 | |
2147 | #define SCO_MINOR_VERSION 0x1 | |
2148 | ||
2149 | void | |
dbe2df79 | 2150 | sco_id (void) |
252b5132 RH |
2151 | { |
2152 | ||
2153 | char *name; | |
2154 | unsigned int c; | |
2155 | char ch; | |
2156 | char *p; | |
2157 | asection *seg = now_seg; | |
2158 | subsegT subseg = now_subseg; | |
2159 | Elf_Internal_Note i_note; | |
2160 | Elf_External_Note e_note; | |
dbe2df79 | 2161 | asection *note_secp = NULL; |
252b5132 RH |
2162 | int i, len; |
2163 | ||
2164 | /* create the .note section */ | |
2165 | ||
2166 | note_secp = subseg_new (".note", 0); | |
2167 | bfd_set_section_flags (stdoutput, | |
2168 | note_secp, | |
2169 | SEC_HAS_CONTENTS | SEC_READONLY); | |
2170 | ||
2171 | /* process the version string */ | |
2172 | ||
fa306131 | 2173 | i_note.namesz = 4; |
252b5132 RH |
2174 | i_note.descsz = 12; /* 12 descriptive bytes */ |
2175 | i_note.type = NT_VERSION; /* Contains a version string */ | |
2176 | ||
2177 | p = frag_more (sizeof (i_note.namesz)); | |
dbe2df79 | 2178 | md_number_to_chars (p, i_note.namesz, 4); |
252b5132 RH |
2179 | |
2180 | p = frag_more (sizeof (i_note.descsz)); | |
dbe2df79 | 2181 | md_number_to_chars (p, i_note.descsz, 4); |
252b5132 RH |
2182 | |
2183 | p = frag_more (sizeof (i_note.type)); | |
dbe2df79 | 2184 | md_number_to_chars (p, i_note.type, 4); |
252b5132 RH |
2185 | |
2186 | p = frag_more (4); | |
fa306131 | 2187 | strcpy (p, "SCO"); |
252b5132 RH |
2188 | |
2189 | /* Note: this is the version number of the ELF we're representing */ | |
2190 | p = frag_more (4); | |
2191 | md_number_to_chars (p, (SCO_MAJOR_VERSION << 16) | (SCO_MINOR_VERSION), 4); | |
2192 | ||
2193 | /* Here, we pick a magic number for ourselves (yes, I "registered" | |
2194 | it with SCO. The bottom bit shows that we are compat with the | |
2195 | SCO ABI. */ | |
2196 | p = frag_more (4); | |
2197 | md_number_to_chars (p, 0x4c520000 | 0x0001, 4); | |
2198 | ||
2199 | /* If we knew (or cared) what the source language options were, we'd | |
2200 | fill them in here. SCO has given us permission to ignore these | |
2201 | and just set them to zero. */ | |
2202 | p = frag_more (4); | |
2203 | md_number_to_chars (p, 0x0000, 4); | |
fa306131 | 2204 | |
252b5132 RH |
2205 | frag_align (2, 0, 0); |
2206 | ||
2207 | /* We probably can't restore the current segment, for there likely | |
2208 | isn't one yet... */ | |
2209 | if (seg && subseg) | |
2210 | subseg_set (seg, subseg); | |
2211 | ||
2212 | } | |
2213 | ||
2214 | #endif /* SCO_ELF */ | |
2215 | ||
5110c57e | 2216 | static int |
dbe2df79 | 2217 | elf_separate_stab_sections (void) |
5110c57e HPN |
2218 | { |
2219 | #ifdef NEED_ECOFF_DEBUG | |
2220 | return (!ECOFF_DEBUGGING); | |
2221 | #else | |
2222 | return 1; | |
2223 | #endif | |
2224 | } | |
2225 | ||
2226 | static void | |
dbe2df79 | 2227 | elf_init_stab_section (segT seg) |
5110c57e HPN |
2228 | { |
2229 | #ifdef NEED_ECOFF_DEBUG | |
2230 | if (!ECOFF_DEBUGGING) | |
2231 | #endif | |
2232 | obj_elf_init_stab_section (seg); | |
2233 | } | |
2234 | ||
252b5132 RH |
2235 | const struct format_ops elf_format_ops = |
2236 | { | |
2237 | bfd_target_elf_flavour, | |
4c63da97 AM |
2238 | 0, /* dfl_leading_underscore */ |
2239 | 1, /* emit_section_symbols */ | |
5110c57e HPN |
2240 | elf_begin, |
2241 | elf_file_symbol, | |
252b5132 RH |
2242 | elf_frob_symbol, |
2243 | elf_frob_file, | |
339681c0 | 2244 | elf_frob_file_before_adjust, |
a161fe53 | 2245 | 0, /* obj_frob_file_before_fix */ |
252b5132 RH |
2246 | elf_frob_file_after_relocs, |
2247 | elf_s_get_size, elf_s_set_size, | |
2248 | elf_s_get_align, elf_s_set_align, | |
4c63da97 | 2249 | elf_s_get_other, |
5110c57e | 2250 | elf_s_set_other, |
4c63da97 | 2251 | 0, /* s_get_desc */ |
5110c57e HPN |
2252 | 0, /* s_set_desc */ |
2253 | 0, /* s_get_type */ | |
2254 | 0, /* s_set_type */ | |
252b5132 RH |
2255 | elf_copy_symbol_attributes, |
2256 | #ifdef NEED_ECOFF_DEBUG | |
2257 | ecoff_generate_asm_lineno, | |
2258 | ecoff_stab, | |
2259 | #else | |
4c63da97 AM |
2260 | 0, /* generate_asm_lineno */ |
2261 | 0, /* process_stab */ | |
252b5132 | 2262 | #endif |
5110c57e HPN |
2263 | elf_separate_stab_sections, |
2264 | elf_init_stab_section, | |
252b5132 RH |
2265 | elf_sec_sym_ok_for_reloc, |
2266 | elf_pop_insert, | |
2267 | #ifdef NEED_ECOFF_DEBUG | |
2268 | elf_ecoff_set_ext, | |
2269 | #else | |
4c63da97 | 2270 | 0, /* ecoff_set_ext */ |
252b5132 | 2271 | #endif |
4c63da97 | 2272 | elf_obj_read_begin_hook, |
5110c57e | 2273 | elf_obj_symbol_new_hook |
252b5132 | 2274 | }; |