Commit | Line | Data |
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252b5132 | 1 | /* ELF object file format |
6f2750fe | 2 | Copyright (C) 1992-2016 Free Software Foundation, Inc. |
252b5132 RH |
3 | |
4 | This file is part of GAS, the GNU Assembler. | |
5 | ||
6 | GAS is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as | |
ec2655a6 | 8 | published by the Free Software Foundation; either version 3, |
252b5132 RH |
9 | or (at your option) any later version. |
10 | ||
11 | GAS is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
14 | the GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GAS; see the file COPYING. If not, write to the Free | |
4b4da160 NC |
18 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
19 | 02110-1301, USA. */ | |
252b5132 RH |
20 | |
21 | #define OBJ_HEADER "obj-elf.h" | |
22 | #include "as.h" | |
3882b010 | 23 | #include "safe-ctype.h" |
252b5132 RH |
24 | #include "subsegs.h" |
25 | #include "obstack.h" | |
9758f3fc | 26 | #include "struc-symbol.h" |
87ccc1b0 | 27 | #include "dwarf2dbg.h" |
252b5132 RH |
28 | |
29 | #ifndef ECOFF_DEBUGGING | |
30 | #define ECOFF_DEBUGGING 0 | |
31 | #else | |
32 | #define NEED_ECOFF_DEBUG | |
33 | #endif | |
34 | ||
35 | #ifdef NEED_ECOFF_DEBUG | |
36 | #include "ecoff.h" | |
37 | #endif | |
38 | ||
39 | #ifdef TC_ALPHA | |
40 | #include "elf/alpha.h" | |
41 | #endif | |
42 | ||
43 | #ifdef TC_MIPS | |
44 | #include "elf/mips.h" | |
45 | #endif | |
46 | ||
47 | #ifdef TC_PPC | |
48 | #include "elf/ppc.h" | |
49 | #endif | |
50 | ||
5b93d8bb AM |
51 | #ifdef TC_I370 |
52 | #include "elf/i370.h" | |
53 | #endif | |
54 | ||
3b22753a L |
55 | #ifdef TC_I386 |
56 | #include "elf/x86-64.h" | |
57 | #endif | |
58 | ||
280d71bf DB |
59 | #ifdef TC_MEP |
60 | #include "elf/mep.h" | |
61 | #endif | |
62 | ||
36591ba1 SL |
63 | #ifdef TC_NIOS2 |
64 | #include "elf/nios2.h" | |
65 | #endif | |
66 | ||
dbe2df79 AM |
67 | static void obj_elf_line (int); |
68 | static void obj_elf_size (int); | |
69 | static void obj_elf_type (int); | |
70 | static void obj_elf_ident (int); | |
71 | static void obj_elf_weak (int); | |
72 | static void obj_elf_local (int); | |
73 | static void obj_elf_visibility (int); | |
74 | static void obj_elf_symver (int); | |
75 | static void obj_elf_subsection (int); | |
76 | static void obj_elf_popsection (int); | |
0420f52b | 77 | static void obj_elf_gnu_attribute (int); |
dbe2df79 | 78 | static void obj_elf_tls_common (int); |
13c56984 | 79 | static void obj_elf_lcomm (int); |
8fe53b44 | 80 | static void obj_elf_struct (int); |
252b5132 RH |
81 | |
82 | static const pseudo_typeS elf_pseudo_table[] = | |
83 | { | |
84 | {"comm", obj_elf_common, 0}, | |
9be1cda6 | 85 | {"common", obj_elf_common, 1}, |
252b5132 | 86 | {"ident", obj_elf_ident, 0}, |
13c56984 | 87 | {"lcomm", obj_elf_lcomm, 0}, |
252b5132 RH |
88 | {"local", obj_elf_local, 0}, |
89 | {"previous", obj_elf_previous, 0}, | |
90 | {"section", obj_elf_section, 0}, | |
91 | {"section.s", obj_elf_section, 0}, | |
92 | {"sect", obj_elf_section, 0}, | |
93 | {"sect.s", obj_elf_section, 0}, | |
9de8d8f1 RH |
94 | {"pushsection", obj_elf_section, 1}, |
95 | {"popsection", obj_elf_popsection, 0}, | |
252b5132 RH |
96 | {"size", obj_elf_size, 0}, |
97 | {"type", obj_elf_type, 0}, | |
98 | {"version", obj_elf_version, 0}, | |
99 | {"weak", obj_elf_weak, 0}, | |
100 | ||
bf514e21 | 101 | /* These define symbol visibility. */ |
2e13b764 NC |
102 | {"internal", obj_elf_visibility, STV_INTERNAL}, |
103 | {"hidden", obj_elf_visibility, STV_HIDDEN}, | |
104 | {"protected", obj_elf_visibility, STV_PROTECTED}, | |
105 | ||
252b5132 RH |
106 | /* These are used for stabs-in-elf configurations. */ |
107 | {"line", obj_elf_line, 0}, | |
108 | ||
109 | /* This is a GNU extension to handle symbol versions. */ | |
110 | {"symver", obj_elf_symver, 0}, | |
111 | ||
112 | /* A GNU extension to change subsection only. */ | |
113 | {"subsection", obj_elf_subsection, 0}, | |
114 | ||
115 | /* These are GNU extensions to aid in garbage collecting C++ vtables. */ | |
dbe2df79 AM |
116 | {"vtable_inherit", (void (*) (int)) &obj_elf_vtable_inherit, 0}, |
117 | {"vtable_entry", (void (*) (int)) &obj_elf_vtable_entry, 0}, | |
252b5132 | 118 | |
0420f52b MR |
119 | /* A GNU extension for object attributes. */ |
120 | {"gnu_attribute", obj_elf_gnu_attribute, 0}, | |
121 | ||
bf514e21 | 122 | /* These are used for dwarf. */ |
252b5132 RH |
123 | {"2byte", cons, 2}, |
124 | {"4byte", cons, 4}, | |
125 | {"8byte", cons, 8}, | |
87ccc1b0 | 126 | /* These are used for dwarf2. */ |
dbe2df79 | 127 | { "file", (void (*) (int)) dwarf2_directive_file, 0 }, |
87ccc1b0 | 128 | { "loc", dwarf2_directive_loc, 0 }, |
07a53e5c | 129 | { "loc_mark_labels", dwarf2_directive_loc_mark_labels, 0 }, |
252b5132 RH |
130 | |
131 | /* We need to trap the section changing calls to handle .previous. */ | |
132 | {"data", obj_elf_data, 0}, | |
8fe53b44 JB |
133 | {"offset", obj_elf_struct, 0}, |
134 | {"struct", obj_elf_struct, 0}, | |
252b5132 RH |
135 | {"text", obj_elf_text, 0}, |
136 | ||
13ae64f3 JJ |
137 | {"tls_common", obj_elf_tls_common, 0}, |
138 | ||
252b5132 | 139 | /* End sentinel. */ |
ab9da554 | 140 | {NULL, NULL, 0}, |
252b5132 RH |
141 | }; |
142 | ||
143 | static const pseudo_typeS ecoff_debug_pseudo_table[] = | |
144 | { | |
145 | #ifdef NEED_ECOFF_DEBUG | |
146 | /* COFF style debugging information for ECOFF. .ln is not used; .loc | |
147 | is used instead. */ | |
148 | { "def", ecoff_directive_def, 0 }, | |
149 | { "dim", ecoff_directive_dim, 0 }, | |
150 | { "endef", ecoff_directive_endef, 0 }, | |
151 | { "file", ecoff_directive_file, 0 }, | |
152 | { "scl", ecoff_directive_scl, 0 }, | |
153 | { "tag", ecoff_directive_tag, 0 }, | |
154 | { "val", ecoff_directive_val, 0 }, | |
155 | ||
156 | /* COFF debugging requires pseudo-ops .size and .type, but ELF | |
157 | already has meanings for those. We use .esize and .etype | |
158 | instead. These are only generated by gcc anyhow. */ | |
159 | { "esize", ecoff_directive_size, 0 }, | |
160 | { "etype", ecoff_directive_type, 0 }, | |
161 | ||
162 | /* ECOFF specific debugging information. */ | |
163 | { "begin", ecoff_directive_begin, 0 }, | |
164 | { "bend", ecoff_directive_bend, 0 }, | |
165 | { "end", ecoff_directive_end, 0 }, | |
166 | { "ent", ecoff_directive_ent, 0 }, | |
167 | { "fmask", ecoff_directive_fmask, 0 }, | |
168 | { "frame", ecoff_directive_frame, 0 }, | |
169 | { "loc", ecoff_directive_loc, 0 }, | |
170 | { "mask", ecoff_directive_mask, 0 }, | |
171 | ||
172 | /* Other ECOFF directives. */ | |
173 | { "extern", ecoff_directive_extern, 0 }, | |
174 | ||
175 | /* These are used on Irix. I don't know how to implement them. */ | |
176 | { "alias", s_ignore, 0 }, | |
177 | { "bgnb", s_ignore, 0 }, | |
178 | { "endb", s_ignore, 0 }, | |
179 | { "lab", s_ignore, 0 }, | |
180 | { "noalias", s_ignore, 0 }, | |
181 | { "verstamp", s_ignore, 0 }, | |
182 | { "vreg", s_ignore, 0 }, | |
183 | #endif | |
184 | ||
ab9da554 | 185 | {NULL, NULL, 0} /* end sentinel */ |
252b5132 RH |
186 | }; |
187 | ||
188 | #undef NO_RELOC | |
189 | #include "aout/aout64.h" | |
190 | ||
191 | /* This is called when the assembler starts. */ | |
192 | ||
3b22753a L |
193 | asection *elf_com_section_ptr; |
194 | ||
252b5132 | 195 | void |
dbe2df79 | 196 | elf_begin (void) |
252b5132 | 197 | { |
dbe2df79 AM |
198 | asection *s; |
199 | ||
252b5132 | 200 | /* Add symbols for the known sections to the symbol table. */ |
dbe2df79 AM |
201 | s = bfd_get_section_by_name (stdoutput, TEXT_SECTION_NAME); |
202 | symbol_table_insert (section_symbol (s)); | |
203 | s = bfd_get_section_by_name (stdoutput, DATA_SECTION_NAME); | |
204 | symbol_table_insert (section_symbol (s)); | |
205 | s = bfd_get_section_by_name (stdoutput, BSS_SECTION_NAME); | |
206 | symbol_table_insert (section_symbol (s)); | |
3b22753a | 207 | elf_com_section_ptr = bfd_com_section_ptr; |
252b5132 RH |
208 | } |
209 | ||
210 | void | |
dbe2df79 | 211 | elf_pop_insert (void) |
252b5132 RH |
212 | { |
213 | pop_insert (elf_pseudo_table); | |
214 | if (ECOFF_DEBUGGING) | |
215 | pop_insert (ecoff_debug_pseudo_table); | |
216 | } | |
217 | ||
218 | static bfd_vma | |
dbe2df79 | 219 | elf_s_get_size (symbolS *sym) |
252b5132 RH |
220 | { |
221 | return S_GET_SIZE (sym); | |
222 | } | |
223 | ||
224 | static void | |
dbe2df79 | 225 | elf_s_set_size (symbolS *sym, bfd_vma sz) |
252b5132 RH |
226 | { |
227 | S_SET_SIZE (sym, sz); | |
228 | } | |
229 | ||
230 | static bfd_vma | |
dbe2df79 | 231 | elf_s_get_align (symbolS *sym) |
252b5132 RH |
232 | { |
233 | return S_GET_ALIGN (sym); | |
234 | } | |
235 | ||
236 | static void | |
dbe2df79 | 237 | elf_s_set_align (symbolS *sym, bfd_vma align) |
252b5132 RH |
238 | { |
239 | S_SET_ALIGN (sym, align); | |
240 | } | |
241 | ||
4c63da97 | 242 | int |
dbe2df79 | 243 | elf_s_get_other (symbolS *sym) |
4c63da97 AM |
244 | { |
245 | return elf_symbol (symbol_get_bfdsym (sym))->internal_elf_sym.st_other; | |
246 | } | |
247 | ||
5110c57e | 248 | static void |
dbe2df79 | 249 | elf_s_set_other (symbolS *sym, int other) |
5110c57e HPN |
250 | { |
251 | S_SET_OTHER (sym, other); | |
252 | } | |
253 | ||
252b5132 | 254 | static int |
dbe2df79 | 255 | elf_sec_sym_ok_for_reloc (asection *sec) |
252b5132 RH |
256 | { |
257 | return obj_sec_sym_ok_for_reloc (sec); | |
258 | } | |
259 | ||
260 | void | |
c04f5787 | 261 | elf_file_symbol (const char *s, int appfile) |
252b5132 | 262 | { |
c04f5787 AM |
263 | if (!appfile |
264 | || symbol_rootP == NULL | |
265 | || symbol_rootP->bsym == NULL | |
266 | || (symbol_rootP->bsym->flags & BSF_FILE) == 0) | |
267 | { | |
268 | symbolS *sym; | |
e57e6ddc | 269 | size_t name_length; |
252b5132 | 270 | |
c04f5787 AM |
271 | sym = symbol_new (s, absolute_section, 0, NULL); |
272 | symbol_set_frag (sym, &zero_address_frag); | |
efa19bfd JB |
273 | |
274 | name_length = strlen (s); | |
275 | if (name_length > strlen (S_GET_NAME (sym))) | |
276 | { | |
277 | obstack_grow (¬es, s, name_length + 1); | |
1e9cc1c2 | 278 | S_SET_NAME (sym, (const char *) obstack_finish (¬es)); |
efa19bfd JB |
279 | } |
280 | else | |
281 | strcpy ((char *) S_GET_NAME (sym), s); | |
282 | ||
c04f5787 | 283 | symbol_get_bfdsym (sym)->flags |= BSF_FILE; |
252b5132 | 284 | |
fbdf9406 JB |
285 | if (symbol_rootP != sym |
286 | && (symbol_rootP->bsym == NULL | |
287 | || !(symbol_rootP->bsym->flags & BSF_FILE))) | |
c04f5787 AM |
288 | { |
289 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); | |
290 | symbol_insert (sym, symbol_rootP, &symbol_rootP, &symbol_lastP); | |
fbdf9406 JB |
291 | } |
292 | ||
252b5132 | 293 | #ifdef DEBUG |
fbdf9406 | 294 | verify_symbol_chain (symbol_rootP, symbol_lastP); |
252b5132 RH |
295 | #endif |
296 | } | |
297 | ||
298 | #ifdef NEED_ECOFF_DEBUG | |
f17c130b | 299 | ecoff_new_file (s, appfile); |
252b5132 RH |
300 | #endif |
301 | } | |
302 | ||
e13bab5a AM |
303 | /* Called from read.c:s_comm after we've parsed .comm symbol, size. |
304 | Parse a possible alignment value. */ | |
305 | ||
3b22753a | 306 | symbolS * |
e13bab5a | 307 | elf_common_parse (int ignore ATTRIBUTE_UNUSED, symbolS *symbolP, addressT size) |
252b5132 | 308 | { |
e13bab5a AM |
309 | addressT align = 0; |
310 | int is_local = symbol_get_obj (symbolP)->local; | |
252b5132 | 311 | |
e13bab5a | 312 | if (*input_line_pointer == ',') |
9be1cda6 | 313 | { |
e13bab5a | 314 | char *save = input_line_pointer; |
9be1cda6 | 315 | |
252b5132 RH |
316 | input_line_pointer++; |
317 | SKIP_WHITESPACE (); | |
e13bab5a AM |
318 | |
319 | if (*input_line_pointer == '"') | |
252b5132 | 320 | { |
e13bab5a AM |
321 | /* For sparc. Accept .common symbol, length, "bss" */ |
322 | input_line_pointer++; | |
323 | /* Some use the dot, some don't. */ | |
324 | if (*input_line_pointer == '.') | |
325 | input_line_pointer++; | |
326 | /* Some say data, some say bss. */ | |
327 | if (strncmp (input_line_pointer, "bss\"", 4) == 0) | |
328 | input_line_pointer += 4; | |
329 | else if (strncmp (input_line_pointer, "data\"", 5) == 0) | |
330 | input_line_pointer += 5; | |
331 | else | |
252b5132 | 332 | { |
e13bab5a AM |
333 | char *p = input_line_pointer; |
334 | char c; | |
335 | ||
336 | while (*--p != '"') | |
337 | ; | |
338 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
339 | if (*input_line_pointer++ == '"') | |
340 | break; | |
341 | c = *input_line_pointer; | |
342 | *input_line_pointer = '\0'; | |
343 | as_bad (_("bad .common segment %s"), p); | |
344 | *input_line_pointer = c; | |
345 | ignore_rest_of_line (); | |
346 | return NULL; | |
252b5132 | 347 | } |
e13bab5a AM |
348 | /* ??? Don't ask me why these are always global. */ |
349 | is_local = 0; | |
252b5132 RH |
350 | } |
351 | else | |
352 | { | |
e13bab5a AM |
353 | input_line_pointer = save; |
354 | align = parse_align (is_local); | |
355 | if (align == (addressT) -1) | |
356 | return NULL; | |
252b5132 RH |
357 | } |
358 | } | |
e13bab5a AM |
359 | |
360 | if (is_local) | |
361 | { | |
362 | bss_alloc (symbolP, size, align); | |
363 | S_CLEAR_EXTERNAL (symbolP); | |
364 | } | |
252b5132 RH |
365 | else |
366 | { | |
e13bab5a AM |
367 | S_SET_VALUE (symbolP, size); |
368 | S_SET_ALIGN (symbolP, align); | |
369 | S_SET_EXTERNAL (symbolP); | |
3b22753a | 370 | S_SET_SEGMENT (symbolP, elf_com_section_ptr); |
252b5132 RH |
371 | } |
372 | ||
49309057 | 373 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; |
252b5132 | 374 | |
13ae64f3 | 375 | return symbolP; |
252b5132 RH |
376 | } |
377 | ||
13ae64f3 | 378 | void |
dbe2df79 | 379 | obj_elf_common (int is_common) |
13ae64f3 | 380 | { |
e13bab5a AM |
381 | if (flag_mri && is_common) |
382 | s_mri_common (0); | |
383 | else | |
384 | s_comm_internal (0, elf_common_parse); | |
13ae64f3 JJ |
385 | } |
386 | ||
387 | static void | |
dbe2df79 | 388 | obj_elf_tls_common (int ignore ATTRIBUTE_UNUSED) |
13ae64f3 | 389 | { |
e13bab5a | 390 | symbolS *symbolP = s_comm_internal (0, elf_common_parse); |
13ae64f3 JJ |
391 | |
392 | if (symbolP) | |
393 | symbol_get_bfdsym (symbolP)->flags |= BSF_THREAD_LOCAL; | |
394 | } | |
395 | ||
13c56984 AM |
396 | static void |
397 | obj_elf_lcomm (int ignore ATTRIBUTE_UNUSED) | |
398 | { | |
399 | symbolS *symbolP = s_comm_internal (0, s_lcomm_internal); | |
400 | ||
401 | if (symbolP) | |
402 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; | |
403 | } | |
404 | ||
6e8bd58f NS |
405 | static symbolS * |
406 | get_sym_from_input_line_and_check (void) | |
407 | { | |
408 | char *name; | |
409 | char c; | |
410 | symbolS *sym; | |
411 | ||
d02603dc | 412 | c = get_symbol_name (& name); |
6e8bd58f NS |
413 | sym = symbol_find_or_make (name); |
414 | *input_line_pointer = c; | |
d02603dc | 415 | SKIP_WHITESPACE_AFTER_NAME (); |
6e8bd58f NS |
416 | |
417 | /* There is no symbol name if input_line_pointer has not moved. */ | |
418 | if (name == input_line_pointer) | |
419 | as_bad (_("Missing symbol name in directive")); | |
420 | return sym; | |
421 | } | |
422 | ||
252b5132 | 423 | static void |
dbe2df79 | 424 | obj_elf_local (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 425 | { |
252b5132 RH |
426 | int c; |
427 | symbolS *symbolP; | |
428 | ||
429 | do | |
430 | { | |
01642c12 | 431 | symbolP = get_sym_from_input_line_and_check (); |
6e8bd58f | 432 | c = *input_line_pointer; |
252b5132 | 433 | S_CLEAR_EXTERNAL (symbolP); |
49309057 | 434 | symbol_get_obj (symbolP)->local = 1; |
252b5132 RH |
435 | if (c == ',') |
436 | { | |
437 | input_line_pointer++; | |
438 | SKIP_WHITESPACE (); | |
439 | if (*input_line_pointer == '\n') | |
440 | c = '\n'; | |
441 | } | |
442 | } | |
443 | while (c == ','); | |
444 | demand_empty_rest_of_line (); | |
445 | } | |
446 | ||
447 | static void | |
dbe2df79 | 448 | obj_elf_weak (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 449 | { |
252b5132 RH |
450 | int c; |
451 | symbolS *symbolP; | |
452 | ||
453 | do | |
454 | { | |
01642c12 | 455 | symbolP = get_sym_from_input_line_and_check (); |
6e8bd58f | 456 | c = *input_line_pointer; |
252b5132 | 457 | S_SET_WEAK (symbolP); |
252b5132 RH |
458 | if (c == ',') |
459 | { | |
460 | input_line_pointer++; | |
461 | SKIP_WHITESPACE (); | |
462 | if (*input_line_pointer == '\n') | |
463 | c = '\n'; | |
464 | } | |
465 | } | |
466 | while (c == ','); | |
467 | demand_empty_rest_of_line (); | |
468 | } | |
469 | ||
2e13b764 | 470 | static void |
dbe2df79 | 471 | obj_elf_visibility (int visibility) |
2e13b764 | 472 | { |
2e13b764 NC |
473 | int c; |
474 | symbolS *symbolP; | |
475 | asymbol *bfdsym; | |
476 | elf_symbol_type *elfsym; | |
477 | ||
478 | do | |
479 | { | |
6e8bd58f | 480 | symbolP = get_sym_from_input_line_and_check (); |
fa306131 | 481 | |
2e13b764 NC |
482 | bfdsym = symbol_get_bfdsym (symbolP); |
483 | elfsym = elf_symbol_from (bfd_asymbol_bfd (bfdsym), bfdsym); | |
fa306131 | 484 | |
9c2799c2 | 485 | gas_assert (elfsym); |
fa306131 | 486 | |
20e420c2 RH |
487 | elfsym->internal_elf_sym.st_other &= ~3; |
488 | elfsym->internal_elf_sym.st_other |= visibility; | |
fa306131 | 489 | |
6e8bd58f | 490 | c = *input_line_pointer; |
2e13b764 NC |
491 | if (c == ',') |
492 | { | |
493 | input_line_pointer ++; | |
fa306131 | 494 | |
2e13b764 | 495 | SKIP_WHITESPACE (); |
fa306131 | 496 | |
2e13b764 NC |
497 | if (*input_line_pointer == '\n') |
498 | c = '\n'; | |
499 | } | |
500 | } | |
501 | while (c == ','); | |
fa306131 | 502 | |
2e13b764 NC |
503 | demand_empty_rest_of_line (); |
504 | } | |
505 | ||
252b5132 RH |
506 | static segT previous_section; |
507 | static int previous_subsection; | |
508 | ||
9de8d8f1 RH |
509 | struct section_stack |
510 | { | |
511 | struct section_stack *next; | |
512 | segT seg, prev_seg; | |
513 | int subseg, prev_subseg; | |
514 | }; | |
515 | ||
516 | static struct section_stack *section_stack; | |
517 | ||
fafe6678 | 518 | static bfd_boolean |
86654c12 L |
519 | get_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *inf) |
520 | { | |
1e9cc1c2 | 521 | const char *gname = (const char *) inf; |
86654c12 | 522 | const char *group_name = elf_group_name (sec); |
01fb1836 | 523 | |
fafe6678 | 524 | return (group_name == gname |
86654c12 | 525 | || (group_name != NULL |
fafe6678 L |
526 | && gname != NULL |
527 | && strcmp (group_name, gname) == 0)); | |
86654c12 L |
528 | } |
529 | ||
252b5132 RH |
530 | /* Handle the .section pseudo-op. This code supports two different |
531 | syntaxes. | |
532 | ||
533 | The first is found on Solaris, and looks like | |
534 | .section ".sec1",#alloc,#execinstr,#write | |
535 | Here the names after '#' are the SHF_* flags to turn on for the | |
536 | section. I'm not sure how it determines the SHT_* type (BFD | |
537 | doesn't really give us control over the type, anyhow). | |
538 | ||
539 | The second format is found on UnixWare, and probably most SVR4 | |
540 | machines, and looks like | |
541 | .section .sec1,"a",@progbits | |
542 | The quoted string may contain any combination of a, w, x, and | |
543 | represents the SHF_* flags to turn on for the section. The string | |
544 | beginning with '@' can be progbits or nobits. There should be | |
545 | other possibilities, but I don't know what they are. In any case, | |
546 | BFD doesn't really let us set the section type. */ | |
547 | ||
cca86cc8 | 548 | void |
dbe2df79 | 549 | obj_elf_change_section (const char *name, |
9fb71ee4 | 550 | unsigned int type, |
01e1a5bc | 551 | bfd_vma attr, |
dbe2df79 AM |
552 | int entsize, |
553 | const char *group_name, | |
554 | int linkonce, | |
555 | int push) | |
252b5132 | 556 | { |
fafe6678 | 557 | asection *old_sec; |
252b5132 | 558 | segT sec; |
742f45cf | 559 | flagword flags; |
551b43fd | 560 | const struct elf_backend_data *bed; |
f61e8019 | 561 | const struct bfd_elf_special_section *ssect; |
252b5132 RH |
562 | |
563 | #ifdef md_flush_pending_output | |
564 | md_flush_pending_output (); | |
565 | #endif | |
566 | ||
9de8d8f1 RH |
567 | /* Switch to the section, creating it if necessary. */ |
568 | if (push) | |
569 | { | |
570 | struct section_stack *elt; | |
325801bd | 571 | elt = XNEW (struct section_stack); |
9de8d8f1 RH |
572 | elt->next = section_stack; |
573 | elt->seg = now_seg; | |
574 | elt->prev_seg = previous_section; | |
575 | elt->subseg = now_subseg; | |
576 | elt->prev_subseg = previous_subsection; | |
577 | section_stack = elt; | |
578 | } | |
579 | previous_section = now_seg; | |
580 | previous_subsection = now_subseg; | |
581 | ||
fafe6678 L |
582 | old_sec = bfd_get_section_by_name_if (stdoutput, name, get_section, |
583 | (void *) group_name); | |
584 | if (old_sec) | |
86654c12 | 585 | { |
fafe6678 | 586 | sec = old_sec; |
86654c12 L |
587 | subseg_set (sec, 0); |
588 | } | |
589 | else | |
590 | sec = subseg_force_new (name, 0); | |
591 | ||
551b43fd AM |
592 | bed = get_elf_backend_data (stdoutput); |
593 | ssect = (*bed->get_sec_type_attr) (stdoutput, sec); | |
9de8d8f1 | 594 | |
f61e8019 | 595 | if (ssect != NULL) |
2f89ff8d | 596 | { |
ea8f8eab L |
597 | bfd_boolean override = FALSE; |
598 | ||
2f89ff8d | 599 | if (type == SHT_NULL) |
f61e8019 AM |
600 | type = ssect->type; |
601 | else if (type != ssect->type) | |
2f89ff8d | 602 | { |
fafe6678 | 603 | if (old_sec == NULL |
23ddb850 | 604 | /* Some older versions of gcc will emit |
7ed1d346 | 605 | |
2f89ff8d | 606 | .section .init_array,"aw",@progbits |
7ed1d346 | 607 | |
2f89ff8d | 608 | for __attribute__ ((section (".init_array"))). |
3b22753a | 609 | "@progbits" is incorrect. Also for x86-64 large bss |
23ddb850 | 610 | sections, some older versions of gcc will emit |
3b22753a L |
611 | |
612 | .section .lbss,"aw",@progbits | |
613 | ||
2f89ff8d | 614 | "@progbits" is incorrect. */ |
3b22753a L |
615 | #ifdef TC_I386 |
616 | && (bed->s->arch_size != 64 | |
617 | || !(ssect->attr & SHF_X86_64_LARGE)) | |
618 | #endif | |
f61e8019 AM |
619 | && ssect->type != SHT_INIT_ARRAY |
620 | && ssect->type != SHT_FINI_ARRAY | |
621 | && ssect->type != SHT_PREINIT_ARRAY) | |
2f89ff8d L |
622 | { |
623 | /* We allow to specify any type for a .note section. */ | |
9fb71ee4 NC |
624 | if (ssect->type != SHT_NOTE |
625 | /* Processor and application defined types are allowed too. */ | |
626 | && type < SHT_LOPROC) | |
2f89ff8d L |
627 | as_warn (_("setting incorrect section type for %s"), |
628 | name); | |
629 | } | |
630 | else | |
631 | { | |
632 | as_warn (_("ignoring incorrect section type for %s"), | |
742f45cf | 633 | name); |
f61e8019 | 634 | type = ssect->type; |
2f89ff8d L |
635 | } |
636 | } | |
637 | ||
9fb71ee4 NC |
638 | if (old_sec == NULL && ((attr & ~(SHF_MASKOS | SHF_MASKPROC)) |
639 | & ~ssect->attr) != 0) | |
2f89ff8d L |
640 | { |
641 | /* As a GNU extension, we permit a .note section to be | |
f61e8019 | 642 | allocatable. If the linker sees an allocatable .note |
2f89ff8d | 643 | section, it will create a PT_NOTE segment in the output |
92191b29 | 644 | file. We also allow "x" for .note.GNU-stack. */ |
f61e8019 AM |
645 | if (ssect->type == SHT_NOTE |
646 | && (attr == SHF_ALLOC || attr == SHF_EXECINSTR)) | |
647 | ; | |
648 | /* Allow different SHF_MERGE and SHF_STRINGS if we have | |
649 | something like .rodata.str. */ | |
650 | else if (ssect->suffix_length == -2 | |
651 | && name[ssect->prefix_length] == '.' | |
ea8f8eab L |
652 | && (attr |
653 | & ~ssect->attr | |
654 | & ~SHF_MERGE | |
655 | & ~SHF_STRINGS) == 0) | |
f61e8019 | 656 | ; |
ea8f8eab L |
657 | /* .interp, .strtab and .symtab can have SHF_ALLOC. */ |
658 | else if (attr == SHF_ALLOC | |
659 | && (strcmp (name, ".interp") == 0 | |
660 | || strcmp (name, ".strtab") == 0 | |
661 | || strcmp (name, ".symtab") == 0)) | |
662 | override = TRUE; | |
b9f18452 L |
663 | /* .note.GNU-stack can have SHF_EXECINSTR. */ |
664 | else if (attr == SHF_EXECINSTR | |
665 | && strcmp (name, ".note.GNU-stack") == 0) | |
666 | override = TRUE; | |
7f841127 L |
667 | #ifdef TC_ALPHA |
668 | /* A section on Alpha may have SHF_ALPHA_GPREL. */ | |
669 | else if ((attr & ~ssect->attr) == SHF_ALPHA_GPREL) | |
670 | override = TRUE; | |
708e2187 NC |
671 | #endif |
672 | #ifdef TC_RX | |
673 | else if (attr == (SHF_EXECINSTR | SHF_WRITE | SHF_ALLOC) | |
674 | && (ssect->type == SHT_INIT_ARRAY | |
675 | || ssect->type == SHT_FINI_ARRAY | |
676 | || ssect->type == SHT_PREINIT_ARRAY)) | |
677 | /* RX init/fini arrays can and should have the "awx" attributes set. */ | |
678 | ; | |
7f841127 | 679 | #endif |
f61e8019 | 680 | else |
ea8f8eab | 681 | { |
86654c12 L |
682 | if (group_name == NULL) |
683 | as_warn (_("setting incorrect section attributes for %s"), | |
684 | name); | |
ea8f8eab L |
685 | override = TRUE; |
686 | } | |
2f89ff8d | 687 | } |
9fb71ee4 | 688 | |
fafe6678 | 689 | if (!override && old_sec == NULL) |
f61e8019 | 690 | attr |= ssect->attr; |
2f89ff8d | 691 | } |
742f45cf AM |
692 | |
693 | /* Convert ELF type and flags to BFD flags. */ | |
694 | flags = (SEC_RELOC | |
695 | | ((attr & SHF_WRITE) ? 0 : SEC_READONLY) | |
696 | | ((attr & SHF_ALLOC) ? SEC_ALLOC : 0) | |
697 | | (((attr & SHF_ALLOC) && type != SHT_NOBITS) ? SEC_LOAD : 0) | |
f5fa8ca2 JJ |
698 | | ((attr & SHF_EXECINSTR) ? SEC_CODE : 0) |
699 | | ((attr & SHF_MERGE) ? SEC_MERGE : 0) | |
13ae64f3 | 700 | | ((attr & SHF_STRINGS) ? SEC_STRINGS : 0) |
18ae9cc1 | 701 | | ((attr & SHF_EXCLUDE) ? SEC_EXCLUDE: 0) |
13ae64f3 | 702 | | ((attr & SHF_TLS) ? SEC_THREAD_LOCAL : 0)); |
9de8d8f1 | 703 | #ifdef md_elf_section_flags |
742f45cf | 704 | flags = md_elf_section_flags (flags, attr, type); |
9de8d8f1 RH |
705 | #endif |
706 | ||
86654c12 L |
707 | if (linkonce) |
708 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
709 | ||
fafe6678 | 710 | if (old_sec == NULL) |
742f45cf AM |
711 | { |
712 | symbolS *secsym; | |
713 | ||
94be91de JB |
714 | if (type == SHT_NULL) |
715 | type = bfd_elf_get_default_section_type (flags); | |
7a6d0b32 JB |
716 | elf_section_type (sec) = type; |
717 | elf_section_flags (sec) = attr; | |
718 | ||
9de8d8f1 RH |
719 | /* Prevent SEC_HAS_CONTENTS from being inadvertently set. */ |
720 | if (type == SHT_NOBITS) | |
13c56984 | 721 | seg_info (sec)->bss = 1; |
9de8d8f1 RH |
722 | |
723 | bfd_set_section_flags (stdoutput, sec, flags); | |
f5fa8ca2 JJ |
724 | if (flags & SEC_MERGE) |
725 | sec->entsize = entsize; | |
aa1f4858 | 726 | elf_group_name (sec) = group_name; |
9de8d8f1 RH |
727 | |
728 | /* Add a symbol for this section to the symbol table. */ | |
729 | secsym = symbol_find (name); | |
730 | if (secsym != NULL) | |
731 | symbol_set_bfdsym (secsym, sec->symbol); | |
732 | else | |
13c56984 | 733 | symbol_table_insert (section_symbol (sec)); |
9de8d8f1 | 734 | } |
7a6d0b32 | 735 | else |
742f45cf | 736 | { |
7a6d0b32 JB |
737 | if (type != SHT_NULL |
738 | && (unsigned) type != elf_section_type (old_sec)) | |
739 | as_warn (_("ignoring changed section type for %s"), name); | |
740 | ||
741 | if (attr != 0) | |
742 | { | |
743 | /* If section attributes are specified the second time we see a | |
744 | particular section, then check that they are the same as we | |
745 | saw the first time. */ | |
746 | if (((old_sec->flags ^ flags) | |
747 | & (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE | |
748 | | SEC_EXCLUDE | SEC_SORT_ENTRIES | SEC_MERGE | SEC_STRINGS | |
749 | | SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD | |
750 | | SEC_THREAD_LOCAL))) | |
751 | as_warn (_("ignoring changed section attributes for %s"), name); | |
9fb71ee4 NC |
752 | else |
753 | /* FIXME: Maybe we should consider removing a previously set | |
754 | processor or application specific attribute as suspicious ? */ | |
755 | elf_section_flags (sec) = attr; | |
756 | ||
7a6d0b32 JB |
757 | if ((flags & SEC_MERGE) && old_sec->entsize != (unsigned) entsize) |
758 | as_warn (_("ignoring changed section entity size for %s"), name); | |
759 | } | |
742f45cf | 760 | } |
9de8d8f1 RH |
761 | |
762 | #ifdef md_elf_section_change_hook | |
742f45cf | 763 | md_elf_section_change_hook (); |
9de8d8f1 RH |
764 | #endif |
765 | } | |
766 | ||
01e1a5bc | 767 | static bfd_vma |
f6616a06 | 768 | obj_elf_parse_section_letters (char *str, size_t len, bfd_boolean *is_clone) |
9de8d8f1 | 769 | { |
01e1a5bc | 770 | bfd_vma attr = 0; |
f6616a06 | 771 | *is_clone = FALSE; |
9de8d8f1 RH |
772 | |
773 | while (len > 0) | |
774 | { | |
775 | switch (*str) | |
776 | { | |
777 | case 'a': | |
778 | attr |= SHF_ALLOC; | |
779 | break; | |
18ae9cc1 L |
780 | case 'e': |
781 | attr |= SHF_EXCLUDE; | |
782 | break; | |
9de8d8f1 RH |
783 | case 'w': |
784 | attr |= SHF_WRITE; | |
785 | break; | |
786 | case 'x': | |
787 | attr |= SHF_EXECINSTR; | |
788 | break; | |
9469ddf0 | 789 | case 'M': |
f5fa8ca2 JJ |
790 | attr |= SHF_MERGE; |
791 | break; | |
9469ddf0 | 792 | case 'S': |
f5fa8ca2 JJ |
793 | attr |= SHF_STRINGS; |
794 | break; | |
060adf0e AM |
795 | case 'G': |
796 | attr |= SHF_GROUP; | |
797 | break; | |
13ae64f3 JJ |
798 | case 'T': |
799 | attr |= SHF_TLS; | |
800 | break; | |
01642c12 | 801 | case '?': |
f6616a06 | 802 | *is_clone = TRUE; |
01642c12 | 803 | break; |
34105363 L |
804 | /* Compatibility. */ |
805 | case 'm': | |
806 | if (*(str - 1) == 'a') | |
807 | { | |
808 | attr |= SHF_MERGE; | |
809 | if (len > 1 && str[1] == 's') | |
810 | { | |
811 | attr |= SHF_STRINGS; | |
812 | str++, len--; | |
813 | } | |
814 | break; | |
815 | } | |
1a0670f3 | 816 | /* Fall through. */ |
9de8d8f1 RH |
817 | default: |
818 | { | |
6d4af3c2 AM |
819 | const char *bad_msg = _("unrecognized .section attribute:" |
820 | " want a,e,w,x,M,S,G,T or number"); | |
9de8d8f1 | 821 | #ifdef md_elf_section_letter |
01e1a5bc | 822 | bfd_vma md_attr = md_elf_section_letter (*str, &bad_msg); |
8f3bae45 | 823 | if (md_attr != (bfd_vma) -1) |
9de8d8f1 RH |
824 | attr |= md_attr; |
825 | else | |
826 | #endif | |
9fb71ee4 NC |
827 | if (ISDIGIT (*str)) |
828 | { | |
829 | char * end; | |
830 | ||
831 | attr |= strtoul (str, & end, 0); | |
832 | /* Update str and len, allowing for the fact that | |
833 | we will execute str++ and len-- below. */ | |
834 | end --; | |
835 | len -= (end - str); | |
836 | str = end; | |
837 | } | |
838 | else | |
839 | as_fatal ("%s", bad_msg); | |
9de8d8f1 RH |
840 | } |
841 | break; | |
842 | } | |
843 | str++, len--; | |
844 | } | |
845 | ||
846 | return attr; | |
847 | } | |
848 | ||
8d28c9d7 | 849 | static int |
44bf2362 | 850 | obj_elf_section_type (char *str, size_t len, bfd_boolean warn) |
9de8d8f1 RH |
851 | { |
852 | if (len == 8 && strncmp (str, "progbits", 8) == 0) | |
853 | return SHT_PROGBITS; | |
854 | if (len == 6 && strncmp (str, "nobits", 6) == 0) | |
855 | return SHT_NOBITS; | |
34f70875 L |
856 | if (len == 4 && strncmp (str, "note", 4) == 0) |
857 | return SHT_NOTE; | |
10b016c2 PB |
858 | if (len == 10 && strncmp (str, "init_array", 10) == 0) |
859 | return SHT_INIT_ARRAY; | |
860 | if (len == 10 && strncmp (str, "fini_array", 10) == 0) | |
861 | return SHT_FINI_ARRAY; | |
862 | if (len == 13 && strncmp (str, "preinit_array", 13) == 0) | |
863 | return SHT_PREINIT_ARRAY; | |
9de8d8f1 RH |
864 | |
865 | #ifdef md_elf_section_type | |
866 | { | |
867 | int md_type = md_elf_section_type (str, len); | |
868 | if (md_type >= 0) | |
869 | return md_type; | |
870 | } | |
871 | #endif | |
872 | ||
9fb71ee4 NC |
873 | if (ISDIGIT (*str)) |
874 | { | |
875 | char * end; | |
876 | int type = strtoul (str, & end, 0); | |
877 | ||
878 | if (warn && (size_t) (end - str) != len) | |
879 | as_warn (_("extraneous characters at end of numeric section type")); | |
880 | ||
881 | return type; | |
882 | } | |
883 | ||
44bf2362 NC |
884 | if (warn) |
885 | as_warn (_("unrecognized section type")); | |
886 | return 0; | |
887 | } | |
888 | ||
01e1a5bc | 889 | static bfd_vma |
44bf2362 NC |
890 | obj_elf_section_word (char *str, size_t len, int *type) |
891 | { | |
892 | int ret; | |
893 | ||
894 | if (len == 5 && strncmp (str, "write", 5) == 0) | |
895 | return SHF_WRITE; | |
896 | if (len == 5 && strncmp (str, "alloc", 5) == 0) | |
897 | return SHF_ALLOC; | |
898 | if (len == 9 && strncmp (str, "execinstr", 9) == 0) | |
899 | return SHF_EXECINSTR; | |
18ae9cc1 L |
900 | if (len == 7 && strncmp (str, "exclude", 7) == 0) |
901 | return SHF_EXCLUDE; | |
44bf2362 NC |
902 | if (len == 3 && strncmp (str, "tls", 3) == 0) |
903 | return SHF_TLS; | |
904 | ||
905 | #ifdef md_elf_section_word | |
906 | { | |
01e1a5bc NC |
907 | bfd_vma md_attr = md_elf_section_word (str, len); |
908 | if (md_attr > 0) | |
44bf2362 NC |
909 | return md_attr; |
910 | } | |
911 | #endif | |
912 | ||
913 | ret = obj_elf_section_type (str, len, FALSE); | |
914 | if (ret != 0) | |
915 | *type = ret; | |
916 | else | |
917 | as_warn (_("unrecognized section attribute")); | |
918 | ||
9de8d8f1 RH |
919 | return 0; |
920 | } | |
921 | ||
6ce8b369 | 922 | /* Get name of section. */ |
82b8a785 | 923 | const char * |
dbe2df79 | 924 | obj_elf_section_name (void) |
6ce8b369 AM |
925 | { |
926 | char *name; | |
927 | ||
928 | SKIP_WHITESPACE (); | |
929 | if (*input_line_pointer == '"') | |
930 | { | |
931 | int dummy; | |
932 | ||
933 | name = demand_copy_C_string (&dummy); | |
934 | if (name == NULL) | |
935 | { | |
936 | ignore_rest_of_line (); | |
937 | return NULL; | |
938 | } | |
939 | } | |
940 | else | |
941 | { | |
942 | char *end = input_line_pointer; | |
943 | ||
944 | while (0 == strchr ("\n\t,; ", *end)) | |
945 | end++; | |
946 | if (end == input_line_pointer) | |
947 | { | |
c95b35a9 | 948 | as_bad (_("missing name")); |
6ce8b369 AM |
949 | ignore_rest_of_line (); |
950 | return NULL; | |
951 | } | |
952 | ||
29a2809e | 953 | name = xmemdup0 (input_line_pointer, end - input_line_pointer); |
451133ce NP |
954 | |
955 | while (flag_sectname_subst) | |
956 | { | |
957 | char *subst = strchr (name, '%'); | |
958 | if (subst && subst[1] == 'S') | |
959 | { | |
960 | int oldlen = strlen (name); | |
961 | int substlen = strlen (now_seg->name); | |
962 | int newlen = oldlen - 2 + substlen; | |
add39d23 | 963 | char *newname = XNEWVEC (char, newlen + 1); |
451133ce NP |
964 | int headlen = subst - name; |
965 | memcpy (newname, name, headlen); | |
966 | strcpy (newname + headlen, now_seg->name); | |
967 | strcat (newname + headlen, subst + 2); | |
968 | xfree (name); | |
969 | name = newname; | |
970 | } | |
971 | else | |
972 | break; | |
973 | } | |
974 | ||
612d7b83 L |
975 | #ifdef tc_canonicalize_section_name |
976 | name = tc_canonicalize_section_name (name); | |
977 | #endif | |
6ce8b369 AM |
978 | input_line_pointer = end; |
979 | } | |
980 | SKIP_WHITESPACE (); | |
981 | return name; | |
982 | } | |
983 | ||
9de8d8f1 | 984 | void |
dbe2df79 | 985 | obj_elf_section (int push) |
9de8d8f1 | 986 | { |
82b8a785 TS |
987 | const char *name, *group_name; |
988 | char *beg; | |
01e1a5bc NC |
989 | int type, dummy; |
990 | bfd_vma attr; | |
f5fa8ca2 | 991 | int entsize; |
d2dab548 | 992 | int linkonce; |
6f932bce | 993 | subsegT new_subsection = -1; |
9de8d8f1 | 994 | |
5b93d8bb | 995 | #ifndef TC_I370 |
252b5132 RH |
996 | if (flag_mri) |
997 | { | |
998 | char mri_type; | |
999 | ||
9de8d8f1 | 1000 | #ifdef md_flush_pending_output |
60bcf0fa | 1001 | md_flush_pending_output (); |
9de8d8f1 RH |
1002 | #endif |
1003 | ||
252b5132 RH |
1004 | previous_section = now_seg; |
1005 | previous_subsection = now_subseg; | |
1006 | ||
1007 | s_mri_sect (&mri_type); | |
1008 | ||
1009 | #ifdef md_elf_section_change_hook | |
1010 | md_elf_section_change_hook (); | |
1011 | #endif | |
1012 | ||
1013 | return; | |
1014 | } | |
5b93d8bb | 1015 | #endif /* ! defined (TC_I370) */ |
252b5132 | 1016 | |
6ce8b369 AM |
1017 | name = obj_elf_section_name (); |
1018 | if (name == NULL) | |
1019 | return; | |
252b5132 RH |
1020 | type = SHT_NULL; |
1021 | attr = 0; | |
aa1f4858 | 1022 | group_name = NULL; |
f5fa8ca2 | 1023 | entsize = 0; |
d2dab548 | 1024 | linkonce = 0; |
252b5132 RH |
1025 | |
1026 | if (*input_line_pointer == ',') | |
1027 | { | |
1028 | /* Skip the comma. */ | |
1029 | ++input_line_pointer; | |
252b5132 RH |
1030 | SKIP_WHITESPACE (); |
1031 | ||
9cfc3331 | 1032 | if (push && ISDIGIT (*input_line_pointer)) |
6f932bce | 1033 | { |
9cfc3331 | 1034 | /* .pushsection has an optional subsection. */ |
6f932bce | 1035 | new_subsection = (subsegT) get_absolute_expression (); |
9cfc3331 L |
1036 | |
1037 | SKIP_WHITESPACE (); | |
1038 | ||
1039 | /* Stop if we don't see a comma. */ | |
1040 | if (*input_line_pointer != ',') | |
1041 | goto done; | |
1042 | ||
1043 | /* Skip the comma. */ | |
1044 | ++input_line_pointer; | |
1045 | SKIP_WHITESPACE (); | |
6f932bce | 1046 | } |
9cfc3331 L |
1047 | |
1048 | if (*input_line_pointer == '"') | |
252b5132 | 1049 | { |
f6616a06 | 1050 | bfd_boolean is_clone; |
01642c12 | 1051 | |
9de8d8f1 RH |
1052 | beg = demand_copy_C_string (&dummy); |
1053 | if (beg == NULL) | |
252b5132 | 1054 | { |
9de8d8f1 RH |
1055 | ignore_rest_of_line (); |
1056 | return; | |
252b5132 | 1057 | } |
f6616a06 | 1058 | attr |= obj_elf_parse_section_letters (beg, strlen (beg), &is_clone); |
252b5132 RH |
1059 | |
1060 | SKIP_WHITESPACE (); | |
1061 | if (*input_line_pointer == ',') | |
1062 | { | |
9de8d8f1 | 1063 | char c; |
060adf0e AM |
1064 | char *save = input_line_pointer; |
1065 | ||
252b5132 RH |
1066 | ++input_line_pointer; |
1067 | SKIP_WHITESPACE (); | |
9de8d8f1 RH |
1068 | c = *input_line_pointer; |
1069 | if (c == '"') | |
252b5132 | 1070 | { |
9de8d8f1 RH |
1071 | beg = demand_copy_C_string (&dummy); |
1072 | if (beg == NULL) | |
252b5132 | 1073 | { |
9de8d8f1 RH |
1074 | ignore_rest_of_line (); |
1075 | return; | |
252b5132 | 1076 | } |
44bf2362 | 1077 | type = obj_elf_section_type (beg, strlen (beg), TRUE); |
9de8d8f1 RH |
1078 | } |
1079 | else if (c == '@' || c == '%') | |
1080 | { | |
d02603dc | 1081 | ++input_line_pointer; |
9fb71ee4 NC |
1082 | |
1083 | if (ISDIGIT (* input_line_pointer)) | |
1084 | { | |
1085 | type = strtoul (input_line_pointer, & input_line_pointer, 0); | |
1086 | } | |
1087 | else | |
1088 | { | |
1089 | c = get_symbol_name (& beg); | |
1090 | (void) restore_line_pointer (c); | |
1091 | type = obj_elf_section_type (beg, input_line_pointer - beg, TRUE); | |
1092 | } | |
252b5132 | 1093 | } |
060adf0e AM |
1094 | else |
1095 | input_line_pointer = save; | |
252b5132 | 1096 | } |
f5fa8ca2 JJ |
1097 | |
1098 | SKIP_WHITESPACE (); | |
6ce8b369 | 1099 | if ((attr & SHF_MERGE) != 0 && *input_line_pointer == ',') |
f5fa8ca2 JJ |
1100 | { |
1101 | ++input_line_pointer; | |
1102 | SKIP_WHITESPACE (); | |
1103 | entsize = get_absolute_expression (); | |
6ce8b369 | 1104 | SKIP_WHITESPACE (); |
f5fa8ca2 JJ |
1105 | if (entsize < 0) |
1106 | { | |
6ce8b369 | 1107 | as_warn (_("invalid merge entity size")); |
f5fa8ca2 JJ |
1108 | attr &= ~SHF_MERGE; |
1109 | entsize = 0; | |
1110 | } | |
1111 | } | |
6ce8b369 AM |
1112 | else if ((attr & SHF_MERGE) != 0) |
1113 | { | |
1114 | as_warn (_("entity size for SHF_MERGE not specified")); | |
1115 | attr &= ~SHF_MERGE; | |
1116 | } | |
060adf0e | 1117 | |
f6616a06 | 1118 | if ((attr & SHF_GROUP) != 0 && is_clone) |
01642c12 RM |
1119 | { |
1120 | as_warn (_("? section flag ignored with G present")); | |
f6616a06 | 1121 | is_clone = FALSE; |
01642c12 | 1122 | } |
060adf0e AM |
1123 | if ((attr & SHF_GROUP) != 0 && *input_line_pointer == ',') |
1124 | { | |
1125 | ++input_line_pointer; | |
aa1f4858 AM |
1126 | group_name = obj_elf_section_name (); |
1127 | if (group_name == NULL) | |
060adf0e | 1128 | attr &= ~SHF_GROUP; |
59365e19 | 1129 | else if (*input_line_pointer == ',') |
d2dab548 | 1130 | { |
59365e19 AM |
1131 | ++input_line_pointer; |
1132 | SKIP_WHITESPACE (); | |
1133 | if (strncmp (input_line_pointer, "comdat", 6) == 0) | |
1134 | { | |
1135 | input_line_pointer += 6; | |
1136 | linkonce = 1; | |
1137 | } | |
d2dab548 AM |
1138 | } |
1139 | else if (strncmp (name, ".gnu.linkonce", 13) == 0) | |
1140 | linkonce = 1; | |
060adf0e AM |
1141 | } |
1142 | else if ((attr & SHF_GROUP) != 0) | |
1143 | { | |
1144 | as_warn (_("group name for SHF_GROUP not specified")); | |
1145 | attr &= ~SHF_GROUP; | |
1146 | } | |
01642c12 | 1147 | |
f6616a06 | 1148 | if (is_clone) |
01642c12 RM |
1149 | { |
1150 | const char *now_group = elf_group_name (now_seg); | |
1151 | if (now_group != NULL) | |
1152 | { | |
1153 | group_name = xstrdup (now_group); | |
1154 | linkonce = (now_seg->flags & SEC_LINK_ONCE) != 0; | |
1155 | } | |
1156 | } | |
252b5132 RH |
1157 | } |
1158 | else | |
1159 | { | |
1160 | do | |
1161 | { | |
9de8d8f1 RH |
1162 | char c; |
1163 | ||
252b5132 RH |
1164 | SKIP_WHITESPACE (); |
1165 | if (*input_line_pointer != '#') | |
1166 | { | |
c95b35a9 | 1167 | as_bad (_("character following name is not '#'")); |
252b5132 RH |
1168 | ignore_rest_of_line (); |
1169 | return; | |
1170 | } | |
d02603dc NC |
1171 | ++input_line_pointer; |
1172 | c = get_symbol_name (& beg); | |
1173 | (void) restore_line_pointer (c); | |
9de8d8f1 | 1174 | |
44bf2362 | 1175 | attr |= obj_elf_section_word (beg, input_line_pointer - beg, & type); |
9de8d8f1 | 1176 | |
252b5132 RH |
1177 | SKIP_WHITESPACE (); |
1178 | } | |
1179 | while (*input_line_pointer++ == ','); | |
1180 | --input_line_pointer; | |
1181 | } | |
1182 | } | |
1183 | ||
9cfc3331 | 1184 | done: |
252b5132 | 1185 | demand_empty_rest_of_line (); |
9de8d8f1 | 1186 | |
d2dab548 | 1187 | obj_elf_change_section (name, type, attr, entsize, group_name, linkonce, push); |
6f932bce NC |
1188 | |
1189 | if (push && new_subsection != -1) | |
1190 | subseg_set (now_seg, new_subsection); | |
252b5132 RH |
1191 | } |
1192 | ||
1193 | /* Change to the .data section. */ | |
1194 | ||
16b93d88 | 1195 | void |
dbe2df79 | 1196 | obj_elf_data (int i) |
252b5132 RH |
1197 | { |
1198 | #ifdef md_flush_pending_output | |
1199 | md_flush_pending_output (); | |
1200 | #endif | |
1201 | ||
1202 | previous_section = now_seg; | |
1203 | previous_subsection = now_subseg; | |
1204 | s_data (i); | |
1205 | ||
1206 | #ifdef md_elf_section_change_hook | |
1207 | md_elf_section_change_hook (); | |
1208 | #endif | |
1209 | } | |
1210 | ||
1211 | /* Change to the .text section. */ | |
1212 | ||
16b93d88 | 1213 | void |
dbe2df79 | 1214 | obj_elf_text (int i) |
252b5132 RH |
1215 | { |
1216 | #ifdef md_flush_pending_output | |
1217 | md_flush_pending_output (); | |
1218 | #endif | |
1219 | ||
1220 | previous_section = now_seg; | |
1221 | previous_subsection = now_subseg; | |
1222 | s_text (i); | |
1223 | ||
1224 | #ifdef md_elf_section_change_hook | |
1225 | md_elf_section_change_hook (); | |
1226 | #endif | |
1227 | } | |
1228 | ||
8fe53b44 JB |
1229 | /* Change to the *ABS* section. */ |
1230 | ||
1231 | void | |
1232 | obj_elf_struct (int i) | |
1233 | { | |
1234 | #ifdef md_flush_pending_output | |
1235 | md_flush_pending_output (); | |
1236 | #endif | |
1237 | ||
1238 | previous_section = now_seg; | |
1239 | previous_subsection = now_subseg; | |
1240 | s_struct (i); | |
1241 | ||
1242 | #ifdef md_elf_section_change_hook | |
1243 | md_elf_section_change_hook (); | |
1244 | #endif | |
1245 | } | |
1246 | ||
252b5132 | 1247 | static void |
dbe2df79 | 1248 | obj_elf_subsection (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1249 | { |
6f932bce | 1250 | int temp; |
252b5132 RH |
1251 | |
1252 | #ifdef md_flush_pending_output | |
1253 | md_flush_pending_output (); | |
1254 | #endif | |
1255 | ||
1256 | previous_section = now_seg; | |
1257 | previous_subsection = now_subseg; | |
1258 | ||
1259 | temp = get_absolute_expression (); | |
1260 | subseg_set (now_seg, (subsegT) temp); | |
1261 | demand_empty_rest_of_line (); | |
1262 | ||
1263 | #ifdef md_elf_section_change_hook | |
1264 | md_elf_section_change_hook (); | |
1265 | #endif | |
1266 | } | |
1267 | ||
1268 | /* This can be called from the processor backends if they change | |
1269 | sections. */ | |
1270 | ||
1271 | void | |
dbe2df79 | 1272 | obj_elf_section_change_hook (void) |
252b5132 RH |
1273 | { |
1274 | previous_section = now_seg; | |
1275 | previous_subsection = now_subseg; | |
1276 | } | |
1277 | ||
1278 | void | |
dbe2df79 | 1279 | obj_elf_previous (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1280 | { |
9de8d8f1 RH |
1281 | segT new_section; |
1282 | int new_subsection; | |
1283 | ||
252b5132 RH |
1284 | if (previous_section == 0) |
1285 | { | |
6ce8b369 | 1286 | as_warn (_(".previous without corresponding .section; ignored")); |
252b5132 RH |
1287 | return; |
1288 | } | |
1289 | ||
1290 | #ifdef md_flush_pending_output | |
1291 | md_flush_pending_output (); | |
1292 | #endif | |
1293 | ||
9de8d8f1 RH |
1294 | new_section = previous_section; |
1295 | new_subsection = previous_subsection; | |
1296 | previous_section = now_seg; | |
1297 | previous_subsection = now_subseg; | |
1298 | subseg_set (new_section, new_subsection); | |
1299 | ||
1300 | #ifdef md_elf_section_change_hook | |
1301 | md_elf_section_change_hook (); | |
1302 | #endif | |
1303 | } | |
1304 | ||
1305 | static void | |
dbe2df79 | 1306 | obj_elf_popsection (int xxx ATTRIBUTE_UNUSED) |
9de8d8f1 RH |
1307 | { |
1308 | struct section_stack *top = section_stack; | |
1309 | ||
1310 | if (top == NULL) | |
1311 | { | |
6ce8b369 | 1312 | as_warn (_(".popsection without corresponding .pushsection; ignored")); |
9de8d8f1 RH |
1313 | return; |
1314 | } | |
1315 | ||
1316 | #ifdef md_flush_pending_output | |
1317 | md_flush_pending_output (); | |
1318 | #endif | |
1319 | ||
1320 | section_stack = top->next; | |
1321 | previous_section = top->prev_seg; | |
1322 | previous_subsection = top->prev_subseg; | |
1323 | subseg_set (top->seg, top->subseg); | |
1324 | free (top); | |
252b5132 RH |
1325 | |
1326 | #ifdef md_elf_section_change_hook | |
1327 | md_elf_section_change_hook (); | |
1328 | #endif | |
1329 | } | |
1330 | ||
1331 | static void | |
dbe2df79 | 1332 | obj_elf_line (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1333 | { |
1334 | /* Assume delimiter is part of expression. BSD4.2 as fails with | |
bf514e21 | 1335 | delightful bug, so we are not being incompatible here. */ |
dbe2df79 | 1336 | new_logical_line (NULL, get_absolute_expression ()); |
252b5132 RH |
1337 | demand_empty_rest_of_line (); |
1338 | } | |
1339 | ||
1340 | /* This handles the .symver pseudo-op, which is used to specify a | |
1341 | symbol version. The syntax is ``.symver NAME,SYMVERNAME''. | |
1342 | SYMVERNAME may contain ELF_VER_CHR ('@') characters. This | |
1343 | pseudo-op causes the assembler to emit a symbol named SYMVERNAME | |
1344 | with the same value as the symbol NAME. */ | |
1345 | ||
1346 | static void | |
dbe2df79 | 1347 | obj_elf_symver (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1348 | { |
1349 | char *name; | |
1350 | char c; | |
468cced8 | 1351 | char old_lexat; |
252b5132 RH |
1352 | symbolS *sym; |
1353 | ||
6e8bd58f | 1354 | sym = get_sym_from_input_line_and_check (); |
252b5132 | 1355 | |
252b5132 RH |
1356 | if (*input_line_pointer != ',') |
1357 | { | |
1358 | as_bad (_("expected comma after name in .symver")); | |
1359 | ignore_rest_of_line (); | |
1360 | return; | |
1361 | } | |
1362 | ||
1363 | ++input_line_pointer; | |
eba874d8 | 1364 | SKIP_WHITESPACE (); |
468cced8 AM |
1365 | |
1366 | /* Temporarily include '@' in symbol names. */ | |
1367 | old_lexat = lex_type[(unsigned char) '@']; | |
1368 | lex_type[(unsigned char) '@'] |= LEX_NAME; | |
d02603dc | 1369 | c = get_symbol_name (& name); |
468cced8 | 1370 | lex_type[(unsigned char) '@'] = old_lexat; |
252b5132 | 1371 | |
339681c0 L |
1372 | if (symbol_get_obj (sym)->versioned_name == NULL) |
1373 | { | |
1374 | symbol_get_obj (sym)->versioned_name = xstrdup (name); | |
252b5132 | 1375 | |
d02603dc | 1376 | (void) restore_line_pointer (c); |
252b5132 | 1377 | |
6f620856 L |
1378 | if (strchr (symbol_get_obj (sym)->versioned_name, |
1379 | ELF_VER_CHR) == NULL) | |
339681c0 L |
1380 | { |
1381 | as_bad (_("missing version name in `%s' for symbol `%s'"), | |
1382 | symbol_get_obj (sym)->versioned_name, | |
1383 | S_GET_NAME (sym)); | |
1384 | ignore_rest_of_line (); | |
1385 | return; | |
1386 | } | |
1387 | } | |
1388 | else | |
252b5132 | 1389 | { |
339681c0 L |
1390 | if (strcmp (symbol_get_obj (sym)->versioned_name, name)) |
1391 | { | |
1392 | as_bad (_("multiple versions [`%s'|`%s'] for symbol `%s'"), | |
1393 | name, symbol_get_obj (sym)->versioned_name, | |
1394 | S_GET_NAME (sym)); | |
1395 | ignore_rest_of_line (); | |
1396 | return; | |
1397 | } | |
1398 | ||
d02603dc | 1399 | (void) restore_line_pointer (c); |
252b5132 RH |
1400 | } |
1401 | ||
1402 | demand_empty_rest_of_line (); | |
1403 | } | |
1404 | ||
1405 | /* This handles the .vtable_inherit pseudo-op, which is used to indicate | |
1406 | to the linker the hierarchy in which a particular table resides. The | |
1407 | syntax is ".vtable_inherit CHILDNAME, PARENTNAME". */ | |
1408 | ||
904a31bf | 1409 | struct fix * |
dbe2df79 | 1410 | obj_elf_vtable_inherit (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1411 | { |
1412 | char *cname, *pname; | |
1413 | symbolS *csym, *psym; | |
1414 | char c, bad = 0; | |
1415 | ||
1416 | if (*input_line_pointer == '#') | |
1417 | ++input_line_pointer; | |
1418 | ||
d02603dc | 1419 | c = get_symbol_name (& cname); |
252b5132 RH |
1420 | csym = symbol_find (cname); |
1421 | ||
1422 | /* GCFIXME: should check that we don't have two .vtable_inherits for | |
1423 | the same child symbol. Also, we can currently only do this if the | |
1424 | child symbol is already exists and is placed in a fragment. */ | |
1425 | ||
49309057 | 1426 | if (csym == NULL || symbol_get_frag (csym) == NULL) |
252b5132 | 1427 | { |
bd3ba5d1 | 1428 | as_bad (_("expected `%s' to have already been set for .vtable_inherit"), |
252b5132 RH |
1429 | cname); |
1430 | bad = 1; | |
1431 | } | |
1432 | ||
1433 | *input_line_pointer = c; | |
1434 | ||
d02603dc | 1435 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
1436 | if (*input_line_pointer != ',') |
1437 | { | |
bd3ba5d1 | 1438 | as_bad (_("expected comma after name in .vtable_inherit")); |
252b5132 | 1439 | ignore_rest_of_line (); |
904a31bf | 1440 | return NULL; |
252b5132 RH |
1441 | } |
1442 | ||
1443 | ++input_line_pointer; | |
1444 | SKIP_WHITESPACE (); | |
1445 | ||
1446 | if (*input_line_pointer == '#') | |
1447 | ++input_line_pointer; | |
1448 | ||
1449 | if (input_line_pointer[0] == '0' | |
1450 | && (input_line_pointer[1] == '\0' | |
3882b010 | 1451 | || ISSPACE (input_line_pointer[1]))) |
252b5132 RH |
1452 | { |
1453 | psym = section_symbol (absolute_section); | |
1454 | ++input_line_pointer; | |
1455 | } | |
1456 | else | |
1457 | { | |
d02603dc | 1458 | c = get_symbol_name (& pname); |
252b5132 | 1459 | psym = symbol_find_or_make (pname); |
d02603dc | 1460 | restore_line_pointer (c); |
252b5132 RH |
1461 | } |
1462 | ||
1463 | demand_empty_rest_of_line (); | |
1464 | ||
1465 | if (bad) | |
904a31bf | 1466 | return NULL; |
252b5132 | 1467 | |
9c2799c2 | 1468 | gas_assert (symbol_get_value_expression (csym)->X_op == O_constant); |
904a31bf AM |
1469 | return fix_new (symbol_get_frag (csym), |
1470 | symbol_get_value_expression (csym)->X_add_number, | |
1471 | 0, psym, 0, 0, BFD_RELOC_VTABLE_INHERIT); | |
252b5132 | 1472 | } |
fa306131 | 1473 | |
252b5132 RH |
1474 | /* This handles the .vtable_entry pseudo-op, which is used to indicate |
1475 | to the linker that a vtable slot was used. The syntax is | |
1476 | ".vtable_entry tablename, offset". */ | |
1477 | ||
904a31bf | 1478 | struct fix * |
dbe2df79 | 1479 | obj_elf_vtable_entry (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1480 | { |
252b5132 RH |
1481 | symbolS *sym; |
1482 | offsetT offset; | |
252b5132 RH |
1483 | |
1484 | if (*input_line_pointer == '#') | |
1485 | ++input_line_pointer; | |
1486 | ||
6e8bd58f | 1487 | sym = get_sym_from_input_line_and_check (); |
252b5132 RH |
1488 | if (*input_line_pointer != ',') |
1489 | { | |
bd3ba5d1 | 1490 | as_bad (_("expected comma after name in .vtable_entry")); |
252b5132 | 1491 | ignore_rest_of_line (); |
904a31bf | 1492 | return NULL; |
252b5132 RH |
1493 | } |
1494 | ||
1495 | ++input_line_pointer; | |
1496 | if (*input_line_pointer == '#') | |
1497 | ++input_line_pointer; | |
1498 | ||
1499 | offset = get_absolute_expression (); | |
1500 | ||
252b5132 | 1501 | demand_empty_rest_of_line (); |
904a31bf AM |
1502 | |
1503 | return fix_new (frag_now, frag_now_fix (), 0, sym, offset, 0, | |
1504 | BFD_RELOC_VTABLE_ENTRY); | |
252b5132 RH |
1505 | } |
1506 | ||
0420f52b MR |
1507 | #define skip_whitespace(str) do { if (*(str) == ' ') ++(str); } while (0) |
1508 | ||
1509 | static inline int | |
1510 | skip_past_char (char ** str, char c) | |
1511 | { | |
1512 | if (**str == c) | |
1513 | { | |
1514 | (*str)++; | |
1515 | return 0; | |
1516 | } | |
1517 | else | |
1518 | return -1; | |
1519 | } | |
1520 | #define skip_past_comma(str) skip_past_char (str, ',') | |
1521 | ||
9440a904 RS |
1522 | /* A list of attributes that have been explicitly set by the assembly code. |
1523 | VENDOR is the vendor id, BASE is the tag shifted right by the number | |
1524 | of bits in MASK, and bit N of MASK is set if tag BASE+N has been set. */ | |
1525 | struct recorded_attribute_info { | |
1526 | struct recorded_attribute_info *next; | |
1527 | int vendor; | |
1528 | unsigned int base; | |
1529 | unsigned long mask; | |
1530 | }; | |
1531 | static struct recorded_attribute_info *recorded_attributes; | |
1532 | ||
1533 | /* Record that we have seen an explicit specification of attribute TAG | |
1534 | for vendor VENDOR. */ | |
1535 | ||
1536 | static void | |
1537 | record_attribute (int vendor, unsigned int tag) | |
1538 | { | |
1539 | unsigned int base; | |
1540 | unsigned long mask; | |
1541 | struct recorded_attribute_info *rai; | |
1542 | ||
1543 | base = tag / (8 * sizeof (rai->mask)); | |
1544 | mask = 1UL << (tag % (8 * sizeof (rai->mask))); | |
1545 | for (rai = recorded_attributes; rai; rai = rai->next) | |
1546 | if (rai->vendor == vendor && rai->base == base) | |
1547 | { | |
1548 | rai->mask |= mask; | |
1549 | return; | |
1550 | } | |
1551 | ||
1552 | rai = XNEW (struct recorded_attribute_info); | |
1553 | rai->next = recorded_attributes; | |
1554 | rai->vendor = vendor; | |
1555 | rai->base = base; | |
1556 | rai->mask = mask; | |
1557 | recorded_attributes = rai; | |
1558 | } | |
1559 | ||
1560 | /* Return true if we have seen an explicit specification of attribute TAG | |
1561 | for vendor VENDOR. */ | |
1562 | ||
1563 | bfd_boolean | |
1564 | obj_elf_seen_attribute (int vendor, unsigned int tag) | |
1565 | { | |
1566 | unsigned int base; | |
1567 | unsigned long mask; | |
1568 | struct recorded_attribute_info *rai; | |
1569 | ||
1570 | base = tag / (8 * sizeof (rai->mask)); | |
1571 | mask = 1UL << (tag % (8 * sizeof (rai->mask))); | |
1572 | for (rai = recorded_attributes; rai; rai = rai->next) | |
1573 | if (rai->vendor == vendor && rai->base == base) | |
1574 | return (rai->mask & mask) != 0; | |
1575 | return FALSE; | |
1576 | } | |
1577 | ||
0420f52b MR |
1578 | /* Parse an attribute directive for VENDOR. |
1579 | Returns the attribute number read, or zero on error. */ | |
1580 | ||
1581 | int | |
1582 | obj_elf_vendor_attribute (int vendor) | |
1583 | { | |
1584 | expressionS exp; | |
1585 | int type; | |
1586 | int tag; | |
1587 | unsigned int i = 0; | |
1588 | char *s = NULL; | |
1589 | ||
1590 | /* Read the first number or name. */ | |
1591 | skip_whitespace (input_line_pointer); | |
1592 | s = input_line_pointer; | |
1593 | if (ISDIGIT (*input_line_pointer)) | |
1594 | { | |
1595 | expression (& exp); | |
1596 | if (exp.X_op != O_constant) | |
1597 | goto bad; | |
1598 | tag = exp.X_add_number; | |
1599 | } | |
1600 | else | |
1601 | { | |
1602 | char *name; | |
1603 | ||
1604 | /* A name may contain '_', but no other punctuation. */ | |
1605 | for (; ISALNUM (*input_line_pointer) || *input_line_pointer == '_'; | |
1606 | ++input_line_pointer) | |
1607 | i++; | |
1608 | if (i == 0) | |
1609 | goto bad; | |
1610 | ||
a44e2901 | 1611 | name = xstrndup (s, i); |
0420f52b MR |
1612 | |
1613 | #ifndef CONVERT_SYMBOLIC_ATTRIBUTE | |
1614 | #define CONVERT_SYMBOLIC_ATTRIBUTE(a) -1 | |
1615 | #endif | |
1616 | ||
1617 | tag = CONVERT_SYMBOLIC_ATTRIBUTE (name); | |
1618 | if (tag == -1) | |
1619 | { | |
1620 | as_bad (_("Attribute name not recognised: %s"), name); | |
1621 | ignore_rest_of_line (); | |
e1fa0163 | 1622 | free (name); |
0420f52b MR |
1623 | return 0; |
1624 | } | |
e1fa0163 | 1625 | free (name); |
0420f52b MR |
1626 | } |
1627 | ||
1628 | type = _bfd_elf_obj_attrs_arg_type (stdoutput, vendor, tag); | |
1629 | ||
1630 | if (skip_past_comma (&input_line_pointer) == -1) | |
1631 | goto bad; | |
1632 | if (type & 1) | |
1633 | { | |
1634 | expression (& exp); | |
1635 | if (exp.X_op != O_constant) | |
1636 | { | |
1637 | as_bad (_("expected numeric constant")); | |
1638 | ignore_rest_of_line (); | |
1639 | return 0; | |
1640 | } | |
1641 | i = exp.X_add_number; | |
1642 | } | |
1643 | if ((type & 3) == 3 | |
1644 | && skip_past_comma (&input_line_pointer) == -1) | |
1645 | { | |
1646 | as_bad (_("expected comma")); | |
1647 | ignore_rest_of_line (); | |
1648 | return 0; | |
1649 | } | |
1650 | if (type & 2) | |
1651 | { | |
1652 | int len; | |
1653 | ||
1654 | skip_whitespace (input_line_pointer); | |
1655 | if (*input_line_pointer != '"') | |
1656 | goto bad_string; | |
1657 | s = demand_copy_C_string (&len); | |
1658 | } | |
1659 | ||
9440a904 | 1660 | record_attribute (vendor, tag); |
0420f52b MR |
1661 | switch (type & 3) |
1662 | { | |
1663 | case 3: | |
1664 | bfd_elf_add_obj_attr_int_string (stdoutput, vendor, tag, i, s); | |
1665 | break; | |
1666 | case 2: | |
1667 | bfd_elf_add_obj_attr_string (stdoutput, vendor, tag, s); | |
1668 | break; | |
1669 | case 1: | |
1670 | bfd_elf_add_obj_attr_int (stdoutput, vendor, tag, i); | |
1671 | break; | |
1672 | default: | |
1673 | abort (); | |
1674 | } | |
1675 | ||
1676 | demand_empty_rest_of_line (); | |
1677 | return tag; | |
1678 | bad_string: | |
1679 | as_bad (_("bad string constant")); | |
1680 | ignore_rest_of_line (); | |
1681 | return 0; | |
1682 | bad: | |
1683 | as_bad (_("expected <tag> , <value>")); | |
1684 | ignore_rest_of_line (); | |
1685 | return 0; | |
1686 | } | |
1687 | ||
1688 | /* Parse a .gnu_attribute directive. */ | |
1689 | ||
1690 | static void | |
1691 | obj_elf_gnu_attribute (int ignored ATTRIBUTE_UNUSED) | |
1692 | { | |
1693 | obj_elf_vendor_attribute (OBJ_ATTR_GNU); | |
1694 | } | |
1695 | ||
252b5132 | 1696 | void |
dbe2df79 | 1697 | elf_obj_read_begin_hook (void) |
252b5132 RH |
1698 | { |
1699 | #ifdef NEED_ECOFF_DEBUG | |
1700 | if (ECOFF_DEBUGGING) | |
1701 | ecoff_read_begin_hook (); | |
1702 | #endif | |
1703 | } | |
1704 | ||
1705 | void | |
dbe2df79 | 1706 | elf_obj_symbol_new_hook (symbolS *symbolP) |
252b5132 | 1707 | { |
49309057 ILT |
1708 | struct elf_obj_sy *sy_obj; |
1709 | ||
1710 | sy_obj = symbol_get_obj (symbolP); | |
1711 | sy_obj->size = NULL; | |
1712 | sy_obj->versioned_name = NULL; | |
252b5132 RH |
1713 | |
1714 | #ifdef NEED_ECOFF_DEBUG | |
1715 | if (ECOFF_DEBUGGING) | |
1716 | ecoff_symbol_new_hook (symbolP); | |
1717 | #endif | |
1718 | } | |
1719 | ||
8fd3e36b AM |
1720 | /* When setting one symbol equal to another, by default we probably |
1721 | want them to have the same "size", whatever it means in the current | |
1722 | context. */ | |
1723 | ||
1724 | void | |
dbe2df79 | 1725 | elf_copy_symbol_attributes (symbolS *dest, symbolS *src) |
8fd3e36b | 1726 | { |
060adf0e AM |
1727 | struct elf_obj_sy *srcelf = symbol_get_obj (src); |
1728 | struct elf_obj_sy *destelf = symbol_get_obj (dest); | |
1729 | if (srcelf->size) | |
1730 | { | |
1731 | if (destelf->size == NULL) | |
325801bd | 1732 | destelf->size = XNEW (expressionS); |
060adf0e AM |
1733 | *destelf->size = *srcelf->size; |
1734 | } | |
1735 | else | |
1736 | { | |
1737 | if (destelf->size != NULL) | |
1738 | free (destelf->size); | |
1739 | destelf->size = NULL; | |
1740 | } | |
1741 | S_SET_SIZE (dest, S_GET_SIZE (src)); | |
26eb4093 JJ |
1742 | /* Don't copy visibility. */ |
1743 | S_SET_OTHER (dest, (ELF_ST_VISIBILITY (S_GET_OTHER (dest)) | |
1744 | | (S_GET_OTHER (src) & ~ELF_ST_VISIBILITY (-1)))); | |
8fd3e36b AM |
1745 | } |
1746 | ||
252b5132 | 1747 | void |
dbe2df79 | 1748 | obj_elf_version (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1749 | { |
1750 | char *name; | |
1751 | unsigned int c; | |
252b5132 RH |
1752 | char *p; |
1753 | asection *seg = now_seg; | |
1754 | subsegT subseg = now_subseg; | |
1755 | Elf_Internal_Note i_note; | |
1756 | Elf_External_Note e_note; | |
dbe2df79 | 1757 | asection *note_secp = NULL; |
252b5132 RH |
1758 | |
1759 | SKIP_WHITESPACE (); | |
1760 | if (*input_line_pointer == '\"') | |
1761 | { | |
6afdfa61 NC |
1762 | unsigned int len; |
1763 | ||
bf514e21 | 1764 | ++input_line_pointer; /* -> 1st char of string. */ |
252b5132 RH |
1765 | name = input_line_pointer; |
1766 | ||
1767 | while (is_a_char (c = next_char_of_string ())) | |
1768 | ; | |
1769 | c = *input_line_pointer; | |
1770 | *input_line_pointer = '\0'; | |
1771 | *(input_line_pointer - 1) = '\0'; | |
1772 | *input_line_pointer = c; | |
1773 | ||
6afdfa61 | 1774 | /* Create the .note section. */ |
252b5132 RH |
1775 | note_secp = subseg_new (".note", 0); |
1776 | bfd_set_section_flags (stdoutput, | |
1777 | note_secp, | |
1778 | SEC_HAS_CONTENTS | SEC_READONLY); | |
1779 | ||
6afdfa61 NC |
1780 | /* Process the version string. */ |
1781 | len = strlen (name) + 1; | |
252b5132 | 1782 | |
6afdfa61 NC |
1783 | /* PR 3456: Although the name field is padded out to an 4-byte |
1784 | boundary, the namesz field should not be adjusted. */ | |
1785 | i_note.namesz = len; | |
1786 | i_note.descsz = 0; /* No description. */ | |
252b5132 RH |
1787 | i_note.type = NT_VERSION; |
1788 | p = frag_more (sizeof (e_note.namesz)); | |
dbe2df79 | 1789 | md_number_to_chars (p, i_note.namesz, sizeof (e_note.namesz)); |
252b5132 | 1790 | p = frag_more (sizeof (e_note.descsz)); |
dbe2df79 | 1791 | md_number_to_chars (p, i_note.descsz, sizeof (e_note.descsz)); |
252b5132 | 1792 | p = frag_more (sizeof (e_note.type)); |
dbe2df79 | 1793 | md_number_to_chars (p, i_note.type, sizeof (e_note.type)); |
6afdfa61 | 1794 | p = frag_more (len); |
5ab504f9 | 1795 | memcpy (p, name, len); |
252b5132 | 1796 | |
252b5132 RH |
1797 | frag_align (2, 0, 0); |
1798 | ||
1799 | subseg_set (seg, subseg); | |
1800 | } | |
1801 | else | |
6afdfa61 NC |
1802 | as_bad (_("expected quoted string")); |
1803 | ||
252b5132 RH |
1804 | demand_empty_rest_of_line (); |
1805 | } | |
1806 | ||
1807 | static void | |
dbe2df79 | 1808 | obj_elf_size (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1809 | { |
d02603dc NC |
1810 | char *name; |
1811 | char c = get_symbol_name (&name); | |
252b5132 RH |
1812 | char *p; |
1813 | expressionS exp; | |
1814 | symbolS *sym; | |
1815 | ||
1816 | p = input_line_pointer; | |
1817 | *p = c; | |
d02603dc | 1818 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
1819 | if (*input_line_pointer != ',') |
1820 | { | |
1821 | *p = 0; | |
1822 | as_bad (_("expected comma after name `%s' in .size directive"), name); | |
1823 | *p = c; | |
1824 | ignore_rest_of_line (); | |
1825 | return; | |
1826 | } | |
1827 | input_line_pointer++; | |
1828 | expression (&exp); | |
1829 | if (exp.X_op == O_absent) | |
1830 | { | |
1831 | as_bad (_("missing expression in .size directive")); | |
1832 | exp.X_op = O_constant; | |
1833 | exp.X_add_number = 0; | |
1834 | } | |
1835 | *p = 0; | |
1836 | sym = symbol_find_or_make (name); | |
1837 | *p = c; | |
1838 | if (exp.X_op == O_constant) | |
c538998c JJ |
1839 | { |
1840 | S_SET_SIZE (sym, exp.X_add_number); | |
1841 | if (symbol_get_obj (sym)->size) | |
1842 | { | |
1843 | xfree (symbol_get_obj (sym)->size); | |
1844 | symbol_get_obj (sym)->size = NULL; | |
1845 | } | |
1846 | } | |
252b5132 RH |
1847 | else |
1848 | { | |
325801bd | 1849 | symbol_get_obj (sym)->size = XNEW (expressionS); |
49309057 | 1850 | *symbol_get_obj (sym)->size = exp; |
252b5132 RH |
1851 | } |
1852 | demand_empty_rest_of_line (); | |
1853 | } | |
1854 | ||
1855 | /* Handle the ELF .type pseudo-op. This sets the type of a symbol. | |
44bf2362 | 1856 | There are six syntaxes: |
fa306131 | 1857 | |
252b5132 RH |
1858 | The first (used on Solaris) is |
1859 | .type SYM,#function | |
1860 | The second (used on UnixWare) is | |
1861 | .type SYM,@function | |
1862 | The third (reportedly to be used on Irix 6.0) is | |
1863 | .type SYM STT_FUNC | |
1864 | The fourth (used on NetBSD/Arm and Linux/ARM) is | |
1865 | .type SYM,%function | |
aa8c34c3 JE |
1866 | The fifth (used on SVR4/860) is |
1867 | .type SYM,"function" | |
44bf2362 NC |
1868 | The sixth (emitted by recent SunPRO under Solaris) is |
1869 | .type SYM,[0-9] | |
1870 | where the integer is the STT_* value. | |
252b5132 RH |
1871 | */ |
1872 | ||
44bf2362 NC |
1873 | static char * |
1874 | obj_elf_type_name (char *cp) | |
1875 | { | |
1876 | char *p; | |
1877 | ||
1878 | p = input_line_pointer; | |
1879 | if (*input_line_pointer >= '0' | |
1880 | && *input_line_pointer <= '9') | |
1881 | { | |
1882 | while (*input_line_pointer >= '0' | |
1883 | && *input_line_pointer <= '9') | |
1884 | ++input_line_pointer; | |
1885 | *cp = *input_line_pointer; | |
1886 | *input_line_pointer = '\0'; | |
1887 | } | |
1888 | else | |
d02603dc | 1889 | *cp = get_symbol_name (&p); |
44bf2362 NC |
1890 | |
1891 | return p; | |
1892 | } | |
1893 | ||
252b5132 | 1894 | static void |
dbe2df79 | 1895 | obj_elf_type (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1896 | { |
252b5132 RH |
1897 | char c; |
1898 | int type; | |
1e9cc1c2 | 1899 | const char *type_name; |
252b5132 | 1900 | symbolS *sym; |
904a31bf | 1901 | elf_symbol_type *elfsym; |
252b5132 | 1902 | |
6e8bd58f NS |
1903 | sym = get_sym_from_input_line_and_check (); |
1904 | c = *input_line_pointer; | |
904a31bf | 1905 | elfsym = (elf_symbol_type *) symbol_get_bfdsym (sym); |
252b5132 | 1906 | |
252b5132 RH |
1907 | if (*input_line_pointer == ',') |
1908 | ++input_line_pointer; | |
1909 | ||
1910 | SKIP_WHITESPACE (); | |
1911 | if ( *input_line_pointer == '#' | |
1912 | || *input_line_pointer == '@' | |
aa8c34c3 | 1913 | || *input_line_pointer == '"' |
252b5132 RH |
1914 | || *input_line_pointer == '%') |
1915 | ++input_line_pointer; | |
1916 | ||
1e9cc1c2 | 1917 | type_name = obj_elf_type_name (& c); |
252b5132 RH |
1918 | |
1919 | type = 0; | |
1e9cc1c2 NC |
1920 | if (strcmp (type_name, "function") == 0 |
1921 | || strcmp (type_name, "2") == 0 | |
1922 | || strcmp (type_name, "STT_FUNC") == 0) | |
252b5132 | 1923 | type = BSF_FUNCTION; |
1e9cc1c2 NC |
1924 | else if (strcmp (type_name, "object") == 0 |
1925 | || strcmp (type_name, "1") == 0 | |
1926 | || strcmp (type_name, "STT_OBJECT") == 0) | |
252b5132 | 1927 | type = BSF_OBJECT; |
1e9cc1c2 NC |
1928 | else if (strcmp (type_name, "tls_object") == 0 |
1929 | || strcmp (type_name, "6") == 0 | |
1930 | || strcmp (type_name, "STT_TLS") == 0) | |
b9734f35 | 1931 | type = BSF_OBJECT | BSF_THREAD_LOCAL; |
1e9cc1c2 NC |
1932 | else if (strcmp (type_name, "notype") == 0 |
1933 | || strcmp (type_name, "0") == 0 | |
1934 | || strcmp (type_name, "STT_NOTYPE") == 0) | |
e7b9a8c1 | 1935 | ; |
1e9cc1c2 NC |
1936 | else if (strcmp (type_name, "common") == 0 |
1937 | || strcmp (type_name, "5") == 0 | |
1938 | || strcmp (type_name, "STT_COMMON") == 0) | |
504b7d20 NC |
1939 | { |
1940 | type = BSF_OBJECT; | |
1941 | ||
1942 | if (! S_IS_COMMON (sym)) | |
1943 | { | |
1944 | if (S_IS_VOLATILE (sym)) | |
1945 | { | |
1946 | sym = symbol_clone (sym, 1); | |
1947 | S_SET_SEGMENT (sym, bfd_com_section_ptr); | |
1948 | S_SET_VALUE (sym, 0); | |
1949 | S_SET_EXTERNAL (sym); | |
1950 | symbol_set_frag (sym, &zero_address_frag); | |
1951 | S_CLEAR_VOLATILE (sym); | |
1952 | } | |
1953 | else if (S_IS_DEFINED (sym) || symbol_equated_p (sym)) | |
1954 | as_bad (_("symbol '%s' is already defined"), S_GET_NAME (sym)); | |
1955 | else | |
1956 | { | |
1957 | /* FIXME: Is it safe to just change the section ? */ | |
1958 | S_SET_SEGMENT (sym, bfd_com_section_ptr); | |
1959 | S_SET_VALUE (sym, 0); | |
1960 | S_SET_EXTERNAL (sym); | |
1961 | } | |
1962 | } | |
1963 | } | |
1e9cc1c2 NC |
1964 | else if (strcmp (type_name, "gnu_indirect_function") == 0 |
1965 | || strcmp (type_name, "10") == 0 | |
1966 | || strcmp (type_name, "STT_GNU_IFUNC") == 0) | |
d8045f23 NC |
1967 | { |
1968 | const struct elf_backend_data *bed; | |
1969 | ||
1970 | bed = get_elf_backend_data (stdoutput); | |
9c55345c | 1971 | if (!(bed->elf_osabi == ELFOSABI_GNU |
83c257ca | 1972 | || bed->elf_osabi == ELFOSABI_FREEBSD |
9c55345c | 1973 | /* GNU is still using the default value 0. */ |
d8045f23 | 1974 | || bed->elf_osabi == ELFOSABI_NONE)) |
83c257ca | 1975 | as_bad (_("symbol type \"%s\" is supported only by GNU and FreeBSD targets"), |
1e9cc1c2 | 1976 | type_name); |
d8045f23 NC |
1977 | type = BSF_FUNCTION | BSF_GNU_INDIRECT_FUNCTION; |
1978 | } | |
1e9cc1c2 | 1979 | else if (strcmp (type_name, "gnu_unique_object") == 0) |
3e7a7d11 | 1980 | { |
d3ce72d0 | 1981 | struct elf_backend_data *bed; |
3e7a7d11 | 1982 | |
d3ce72d0 | 1983 | bed = (struct elf_backend_data *) get_elf_backend_data (stdoutput); |
9c55345c TS |
1984 | if (!(bed->elf_osabi == ELFOSABI_GNU |
1985 | /* GNU is still using the default value 0. */ | |
3e7a7d11 NC |
1986 | || bed->elf_osabi == ELFOSABI_NONE)) |
1987 | as_bad (_("symbol type \"%s\" is supported only by GNU targets"), | |
1e9cc1c2 | 1988 | type_name); |
3e7a7d11 | 1989 | type = BSF_OBJECT | BSF_GNU_UNIQUE; |
9c55345c TS |
1990 | /* PR 10549: Always set OSABI field to GNU for objects containing unique symbols. */ |
1991 | bed->elf_osabi = ELFOSABI_GNU; | |
3e7a7d11 | 1992 | } |
904a31bf | 1993 | #ifdef md_elf_symbol_type |
1e9cc1c2 | 1994 | else if ((type = md_elf_symbol_type (type_name, sym, elfsym)) != -1) |
904a31bf AM |
1995 | ; |
1996 | #endif | |
252b5132 | 1997 | else |
1e9cc1c2 | 1998 | as_bad (_("unrecognized symbol type \"%s\""), type_name); |
252b5132 RH |
1999 | |
2000 | *input_line_pointer = c; | |
2001 | ||
aa8c34c3 JE |
2002 | if (*input_line_pointer == '"') |
2003 | ++input_line_pointer; | |
2004 | ||
904a31bf | 2005 | elfsym->symbol.flags |= type; |
252b5132 RH |
2006 | |
2007 | demand_empty_rest_of_line (); | |
2008 | } | |
2009 | ||
2010 | static void | |
dbe2df79 | 2011 | obj_elf_ident (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2012 | { |
2013 | static segT comment_section; | |
2014 | segT old_section = now_seg; | |
2015 | int old_subsection = now_subseg; | |
2016 | ||
5f91fe03 ILT |
2017 | #ifdef md_flush_pending_output |
2018 | md_flush_pending_output (); | |
2019 | #endif | |
2020 | ||
252b5132 RH |
2021 | if (!comment_section) |
2022 | { | |
2023 | char *p; | |
2024 | comment_section = subseg_new (".comment", 0); | |
2025 | bfd_set_section_flags (stdoutput, comment_section, | |
01fb1836 RM |
2026 | SEC_READONLY | SEC_HAS_CONTENTS |
2027 | | SEC_MERGE | SEC_STRINGS); | |
2028 | comment_section->entsize = 1; | |
cd000bff DJ |
2029 | #ifdef md_elf_section_change_hook |
2030 | md_elf_section_change_hook (); | |
2031 | #endif | |
252b5132 RH |
2032 | p = frag_more (1); |
2033 | *p = 0; | |
2034 | } | |
2035 | else | |
2036 | subseg_set (comment_section, 0); | |
38a57ae7 | 2037 | stringer (8 + 1); |
252b5132 RH |
2038 | subseg_set (old_section, old_subsection); |
2039 | } | |
2040 | ||
2041 | #ifdef INIT_STAB_SECTION | |
2042 | ||
2043 | /* The first entry in a .stabs section is special. */ | |
2044 | ||
2045 | void | |
dbe2df79 | 2046 | obj_elf_init_stab_section (segT seg) |
252b5132 | 2047 | { |
3b4dbbbf | 2048 | const char *file; |
252b5132 RH |
2049 | char *p; |
2050 | char *stabstr_name; | |
2051 | unsigned int stroff; | |
2052 | ||
2053 | /* Force the section to align to a longword boundary. Without this, | |
2054 | UnixWare ar crashes. */ | |
2055 | bfd_set_section_alignment (stdoutput, seg, 2); | |
2056 | ||
bf514e21 | 2057 | /* Make space for this first symbol. */ |
252b5132 | 2058 | p = frag_more (12); |
bf514e21 | 2059 | /* Zero it out. */ |
252b5132 | 2060 | memset (p, 0, 12); |
3b4dbbbf | 2061 | file = as_where (NULL); |
29a2809e | 2062 | stabstr_name = concat (segment_name (seg), "str", (char *) NULL); |
252b5132 | 2063 | stroff = get_stab_string_offset (file, stabstr_name); |
91952a06 | 2064 | know (stroff == 1 || (stroff == 0 && file[0] == '\0')); |
252b5132 RH |
2065 | md_number_to_chars (p, stroff, 4); |
2066 | seg_info (seg)->stabu.p = p; | |
2067 | } | |
2068 | ||
2069 | #endif | |
2070 | ||
2071 | /* Fill in the counts in the first entry in a .stabs section. */ | |
2072 | ||
2073 | static void | |
dbe2df79 | 2074 | adjust_stab_sections (bfd *abfd, asection *sec, void *xxx ATTRIBUTE_UNUSED) |
252b5132 RH |
2075 | { |
2076 | char *name; | |
2077 | asection *strsec; | |
2078 | char *p; | |
2079 | int strsz, nsyms; | |
2080 | ||
2081 | if (strncmp (".stab", sec->name, 5)) | |
2082 | return; | |
2083 | if (!strcmp ("str", sec->name + strlen (sec->name) - 3)) | |
2084 | return; | |
2085 | ||
e1fa0163 | 2086 | name = concat (sec->name, "str", NULL); |
252b5132 RH |
2087 | strsec = bfd_get_section_by_name (abfd, name); |
2088 | if (strsec) | |
2089 | strsz = bfd_section_size (abfd, strsec); | |
2090 | else | |
2091 | strsz = 0; | |
2092 | nsyms = bfd_section_size (abfd, sec) / 12 - 1; | |
2093 | ||
2094 | p = seg_info (sec)->stabu.p; | |
9c2799c2 | 2095 | gas_assert (p != 0); |
252b5132 | 2096 | |
dbe2df79 AM |
2097 | bfd_h_put_16 (abfd, nsyms, p + 6); |
2098 | bfd_h_put_32 (abfd, strsz, p + 8); | |
e1fa0163 | 2099 | free (name); |
252b5132 RH |
2100 | } |
2101 | ||
2102 | #ifdef NEED_ECOFF_DEBUG | |
2103 | ||
2104 | /* This function is called by the ECOFF code. It is supposed to | |
2105 | record the external symbol information so that the backend can | |
2106 | write it out correctly. The ELF backend doesn't actually handle | |
2107 | this at the moment, so we do it ourselves. We save the information | |
2108 | in the symbol. */ | |
2109 | ||
ae4a729b AM |
2110 | #ifdef OBJ_MAYBE_ELF |
2111 | static | |
2112 | #endif | |
252b5132 | 2113 | void |
dbe2df79 | 2114 | elf_ecoff_set_ext (symbolS *sym, struct ecoff_extr *ext) |
252b5132 | 2115 | { |
dbe2df79 | 2116 | symbol_get_bfdsym (sym)->udata.p = ext; |
252b5132 RH |
2117 | } |
2118 | ||
2119 | /* This function is called by bfd_ecoff_debug_externals. It is | |
2120 | supposed to *EXT to the external symbol information, and return | |
2121 | whether the symbol should be used at all. */ | |
2122 | ||
b34976b6 | 2123 | static bfd_boolean |
dbe2df79 | 2124 | elf_get_extr (asymbol *sym, EXTR *ext) |
252b5132 RH |
2125 | { |
2126 | if (sym->udata.p == NULL) | |
b34976b6 | 2127 | return FALSE; |
252b5132 | 2128 | *ext = *(EXTR *) sym->udata.p; |
b34976b6 | 2129 | return TRUE; |
252b5132 RH |
2130 | } |
2131 | ||
2132 | /* This function is called by bfd_ecoff_debug_externals. It has | |
2133 | nothing to do for ELF. */ | |
2134 | ||
252b5132 | 2135 | static void |
dbe2df79 AM |
2136 | elf_set_index (asymbol *sym ATTRIBUTE_UNUSED, |
2137 | bfd_size_type indx ATTRIBUTE_UNUSED) | |
252b5132 RH |
2138 | { |
2139 | } | |
2140 | ||
2141 | #endif /* NEED_ECOFF_DEBUG */ | |
2142 | ||
2143 | void | |
dbe2df79 | 2144 | elf_frob_symbol (symbolS *symp, int *puntp) |
252b5132 | 2145 | { |
49309057 | 2146 | struct elf_obj_sy *sy_obj; |
49002d7f | 2147 | expressionS *size; |
49309057 | 2148 | |
252b5132 RH |
2149 | #ifdef NEED_ECOFF_DEBUG |
2150 | if (ECOFF_DEBUGGING) | |
2151 | ecoff_frob_symbol (symp); | |
2152 | #endif | |
2153 | ||
49309057 ILT |
2154 | sy_obj = symbol_get_obj (symp); |
2155 | ||
49002d7f L |
2156 | size = sy_obj->size; |
2157 | if (size != NULL) | |
252b5132 | 2158 | { |
49002d7f L |
2159 | if (resolve_expression (size) |
2160 | && size->X_op == O_constant) | |
2161 | S_SET_SIZE (symp, size->X_add_number); | |
e1e90034 | 2162 | else |
49002d7f | 2163 | { |
a90fb5e3 | 2164 | if (!flag_allow_nonconst_size) |
869fe6ea AM |
2165 | as_bad (_(".size expression for %s " |
2166 | "does not evaluate to a constant"), S_GET_NAME (symp)); | |
21be61f5 | 2167 | else |
869fe6ea AM |
2168 | as_warn (_(".size expression for %s " |
2169 | "does not evaluate to a constant"), S_GET_NAME (symp)); | |
49002d7f | 2170 | } |
49309057 ILT |
2171 | free (sy_obj->size); |
2172 | sy_obj->size = NULL; | |
252b5132 RH |
2173 | } |
2174 | ||
49309057 | 2175 | if (sy_obj->versioned_name != NULL) |
252b5132 | 2176 | { |
79082ff0 L |
2177 | char *p; |
2178 | ||
2179 | p = strchr (sy_obj->versioned_name, ELF_VER_CHR); | |
85024cd8 AM |
2180 | if (p == NULL) |
2181 | /* We will have already reported an error about a missing version. */ | |
2182 | *puntp = TRUE; | |
79082ff0 | 2183 | |
252b5132 RH |
2184 | /* This symbol was given a new name with the .symver directive. |
2185 | ||
13c56984 AM |
2186 | If this is an external reference, just rename the symbol to |
2187 | include the version string. This will make the relocs be | |
2188 | against the correct versioned symbol. | |
252b5132 RH |
2189 | |
2190 | If this is a definition, add an alias. FIXME: Using an alias | |
2191 | will permit the debugging information to refer to the right | |
2192 | symbol. However, it's not clear whether it is the best | |
2193 | approach. */ | |
2194 | ||
85024cd8 | 2195 | else if (! S_IS_DEFINED (symp)) |
252b5132 | 2196 | { |
252b5132 | 2197 | /* Verify that the name isn't using the @@ syntax--this is |
13c56984 AM |
2198 | reserved for definitions of the default version to link |
2199 | against. */ | |
252b5132 RH |
2200 | if (p[1] == ELF_VER_CHR) |
2201 | { | |
85024cd8 AM |
2202 | as_bad (_("invalid attempt to declare external version name" |
2203 | " as default in symbol `%s'"), | |
49309057 | 2204 | sy_obj->versioned_name); |
b34976b6 | 2205 | *puntp = TRUE; |
252b5132 | 2206 | } |
49309057 | 2207 | S_SET_NAME (symp, sy_obj->versioned_name); |
252b5132 RH |
2208 | } |
2209 | else | |
2210 | { | |
dbe2df79 | 2211 | if (p[1] == ELF_VER_CHR && p[2] == ELF_VER_CHR) |
79082ff0 L |
2212 | { |
2213 | size_t l; | |
2214 | ||
2215 | /* The @@@ syntax is a special case. It renames the | |
2216 | symbol name to versioned_name with one `@' removed. */ | |
2217 | l = strlen (&p[3]) + 1; | |
dbe2df79 | 2218 | memmove (&p[2], &p[3], l); |
79082ff0 L |
2219 | S_SET_NAME (symp, sy_obj->versioned_name); |
2220 | } | |
2221 | else | |
2222 | { | |
2223 | symbolS *symp2; | |
252b5132 | 2224 | |
79082ff0 L |
2225 | /* FIXME: Creating a new symbol here is risky. We're |
2226 | in the final loop over the symbol table. We can | |
2227 | get away with it only because the symbol goes to | |
2228 | the end of the list, where the loop will still see | |
2229 | it. It would probably be better to do this in | |
2230 | obj_frob_file_before_adjust. */ | |
252b5132 | 2231 | |
79082ff0 | 2232 | symp2 = symbol_find_or_make (sy_obj->versioned_name); |
252b5132 | 2233 | |
79082ff0 | 2234 | /* Now we act as though we saw symp2 = sym. */ |
252b5132 | 2235 | |
79082ff0 | 2236 | S_SET_SEGMENT (symp2, S_GET_SEGMENT (symp)); |
252b5132 | 2237 | |
79082ff0 L |
2238 | /* Subtracting out the frag address here is a hack |
2239 | because we are in the middle of the final loop. */ | |
2240 | S_SET_VALUE (symp2, | |
2241 | (S_GET_VALUE (symp) | |
2242 | - symbol_get_frag (symp)->fr_address)); | |
252b5132 | 2243 | |
79082ff0 | 2244 | symbol_set_frag (symp2, symbol_get_frag (symp)); |
252b5132 | 2245 | |
79082ff0 L |
2246 | /* This will copy over the size information. */ |
2247 | copy_symbol_attributes (symp2, symp); | |
252b5132 | 2248 | |
26eb4093 JJ |
2249 | S_SET_OTHER (symp2, S_GET_OTHER (symp)); |
2250 | ||
79082ff0 L |
2251 | if (S_IS_WEAK (symp)) |
2252 | S_SET_WEAK (symp2); | |
252b5132 | 2253 | |
79082ff0 L |
2254 | if (S_IS_EXTERNAL (symp)) |
2255 | S_SET_EXTERNAL (symp2); | |
2256 | } | |
252b5132 RH |
2257 | } |
2258 | } | |
2259 | ||
2260 | /* Double check weak symbols. */ | |
49309057 | 2261 | if (S_IS_WEAK (symp)) |
252b5132 RH |
2262 | { |
2263 | if (S_IS_COMMON (symp)) | |
6ce8b369 | 2264 | as_bad (_("symbol `%s' can not be both weak and common"), |
252b5132 RH |
2265 | S_GET_NAME (symp)); |
2266 | } | |
2267 | ||
2268 | #ifdef TC_MIPS | |
2269 | /* The Irix 5 and 6 assemblers set the type of any common symbol and | |
2270 | any undefined non-function symbol to STT_OBJECT. We try to be | |
2271 | compatible, since newer Irix 5 and 6 linkers care. However, we | |
2272 | only set undefined symbols to be STT_OBJECT if we are on Irix, | |
2273 | because that is the only time gcc will generate the necessary | |
2274 | .global directives to mark functions. */ | |
2275 | ||
2276 | if (S_IS_COMMON (symp)) | |
49309057 | 2277 | symbol_get_bfdsym (symp)->flags |= BSF_OBJECT; |
252b5132 RH |
2278 | |
2279 | if (strstr (TARGET_OS, "irix") != NULL | |
49309057 ILT |
2280 | && ! S_IS_DEFINED (symp) |
2281 | && (symbol_get_bfdsym (symp)->flags & BSF_FUNCTION) == 0) | |
2282 | symbol_get_bfdsym (symp)->flags |= BSF_OBJECT; | |
252b5132 | 2283 | #endif |
252b5132 RH |
2284 | } |
2285 | ||
060adf0e AM |
2286 | struct group_list |
2287 | { | |
2288 | asection **head; /* Section lists. */ | |
2289 | unsigned int *elt_count; /* Number of sections in each list. */ | |
2290 | unsigned int num_group; /* Number of lists. */ | |
1e9cc1c2 | 2291 | struct hash_control *indexes; /* Maps group name to index in head array. */ |
060adf0e AM |
2292 | }; |
2293 | ||
2294 | /* Called via bfd_map_over_sections. If SEC is a member of a group, | |
2295 | add it to a list of sections belonging to the group. INF is a | |
2296 | pointer to a struct group_list, which is where we store the head of | |
2297 | each list. */ | |
2298 | ||
2299 | static void | |
dbe2df79 | 2300 | build_group_lists (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *inf) |
060adf0e | 2301 | { |
1e9cc1c2 | 2302 | struct group_list *list = (struct group_list *) inf; |
aa1f4858 | 2303 | const char *group_name = elf_group_name (sec); |
060adf0e | 2304 | unsigned int i; |
1e9cc1c2 NC |
2305 | unsigned int *elem_idx; |
2306 | unsigned int *idx_ptr; | |
060adf0e AM |
2307 | |
2308 | if (group_name == NULL) | |
2309 | return; | |
2310 | ||
2311 | /* If this group already has a list, add the section to the head of | |
2312 | the list. */ | |
1e9cc1c2 NC |
2313 | elem_idx = (unsigned int *) hash_find (list->indexes, group_name); |
2314 | if (elem_idx != NULL) | |
060adf0e | 2315 | { |
1e9cc1c2 NC |
2316 | elf_next_in_group (sec) = list->head[*elem_idx]; |
2317 | list->head[*elem_idx] = sec; | |
2318 | list->elt_count[*elem_idx] += 1; | |
2319 | return; | |
060adf0e AM |
2320 | } |
2321 | ||
2322 | /* New group. Make the arrays bigger in chunks to minimize calls to | |
2323 | realloc. */ | |
2324 | i = list->num_group; | |
2325 | if ((i & 127) == 0) | |
2326 | { | |
2327 | unsigned int newsize = i + 128; | |
add39d23 TS |
2328 | list->head = XRESIZEVEC (asection *, list->head, newsize); |
2329 | list->elt_count = XRESIZEVEC (unsigned int, list->elt_count, newsize); | |
060adf0e AM |
2330 | } |
2331 | list->head[i] = sec; | |
2332 | list->elt_count[i] = 1; | |
2333 | list->num_group += 1; | |
1e9cc1c2 NC |
2334 | |
2335 | /* Add index to hash. */ | |
325801bd | 2336 | idx_ptr = XNEW (unsigned int); |
1e9cc1c2 NC |
2337 | *idx_ptr = i; |
2338 | hash_insert (list->indexes, group_name, idx_ptr); | |
2339 | } | |
2340 | ||
2341 | static void free_section_idx (const char *key ATTRIBUTE_UNUSED, void *val) | |
2342 | { | |
2343 | free ((unsigned int *) val); | |
060adf0e AM |
2344 | } |
2345 | ||
252b5132 | 2346 | void |
709001e9 | 2347 | elf_adjust_symtab (void) |
252b5132 | 2348 | { |
060adf0e AM |
2349 | struct group_list list; |
2350 | unsigned int i; | |
2351 | ||
060adf0e AM |
2352 | /* Go find section groups. */ |
2353 | list.num_group = 0; | |
2354 | list.head = NULL; | |
2355 | list.elt_count = NULL; | |
709001e9 | 2356 | list.indexes = hash_new (); |
dbe2df79 | 2357 | bfd_map_over_sections (stdoutput, build_group_lists, &list); |
3739860c | 2358 | |
060adf0e AM |
2359 | /* Make the SHT_GROUP sections that describe each section group. We |
2360 | can't set up the section contents here yet, because elf section | |
2361 | indices have yet to be calculated. elf.c:set_group_contents does | |
2362 | the rest of the work. */ | |
709001e9 | 2363 | for (i = 0; i < list.num_group; i++) |
060adf0e | 2364 | { |
aa1f4858 | 2365 | const char *group_name = elf_group_name (list.head[i]); |
9758f3fc | 2366 | const char *sec_name; |
060adf0e AM |
2367 | asection *s; |
2368 | flagword flags; | |
9758f3fc | 2369 | struct symbol *sy; |
587aac4e | 2370 | bfd_size_type size; |
060adf0e | 2371 | |
060adf0e | 2372 | flags = SEC_READONLY | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_GROUP; |
d2dab548 | 2373 | for (s = list.head[i]; s != NULL; s = elf_next_in_group (s)) |
68bfbfcc | 2374 | if ((s->flags ^ flags) & SEC_LINK_ONCE) |
d2dab548 AM |
2375 | { |
2376 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
2377 | if (s != list.head[i]) | |
2378 | { | |
2379 | as_warn (_("assuming all members of group `%s' are COMDAT"), | |
2380 | group_name); | |
2381 | break; | |
2382 | } | |
2383 | } | |
2384 | ||
709001e9 | 2385 | sec_name = ".group"; |
9758f3fc | 2386 | s = subseg_force_new (sec_name, 0); |
060adf0e AM |
2387 | if (s == NULL |
2388 | || !bfd_set_section_flags (stdoutput, s, flags) | |
2389 | || !bfd_set_section_alignment (stdoutput, s, 2)) | |
2390 | { | |
2391 | as_fatal (_("can't create group: %s"), | |
2392 | bfd_errmsg (bfd_get_error ())); | |
2393 | } | |
2f89ff8d | 2394 | elf_section_type (s) = SHT_GROUP; |
060adf0e | 2395 | |
aa1f4858 AM |
2396 | /* Pass a pointer to the first section in this group. */ |
2397 | elf_next_in_group (s) = list.head[i]; | |
709001e9 MM |
2398 | /* Make sure that the signature symbol for the group has the |
2399 | name of the group. */ | |
2400 | sy = symbol_find_exact (group_name); | |
2401 | if (!sy | |
2402 | || (sy != symbol_lastP | |
2403 | && (sy->sy_next == NULL | |
2404 | || sy->sy_next->sy_previous != sy))) | |
2405 | { | |
2406 | /* Create the symbol now. */ | |
2407 | sy = symbol_new (group_name, now_seg, (valueT) 0, frag_now); | |
69b70cfe RO |
2408 | #ifdef TE_SOLARIS |
2409 | /* Before Solaris 11 build 154, Sun ld rejects local group | |
2410 | signature symbols, so make them weak hidden instead. */ | |
2411 | symbol_get_bfdsym (sy)->flags |= BSF_WEAK; | |
2412 | S_SET_OTHER (sy, STV_HIDDEN); | |
2413 | #else | |
709001e9 | 2414 | symbol_get_obj (sy)->local = 1; |
69b70cfe | 2415 | #endif |
709001e9 MM |
2416 | symbol_table_insert (sy); |
2417 | } | |
2418 | elf_group_id (s) = symbol_get_bfdsym (sy); | |
060adf0e | 2419 | |
587aac4e AM |
2420 | size = 4 * (list.elt_count[i] + 1); |
2421 | bfd_set_section_size (stdoutput, s, size); | |
b7712f8d | 2422 | s->contents = (unsigned char *) frag_more (size); |
060adf0e | 2423 | frag_now->fr_fix = frag_now_fix_octets (); |
07cb2078 | 2424 | frag_wane (frag_now); |
060adf0e AM |
2425 | } |
2426 | ||
1e9cc1c2 NC |
2427 | /* Cleanup hash. */ |
2428 | hash_traverse (list.indexes, free_section_idx); | |
2429 | hash_die (list.indexes); | |
252b5132 RH |
2430 | } |
2431 | ||
709001e9 MM |
2432 | void |
2433 | elf_frob_file (void) | |
2434 | { | |
2435 | bfd_map_over_sections (stdoutput, adjust_stab_sections, NULL); | |
2436 | ||
2437 | #ifdef elf_tc_final_processing | |
2438 | elf_tc_final_processing (); | |
2439 | #endif | |
2440 | } | |
2441 | ||
4a1805b1 | 2442 | /* It removes any unneeded versioned symbols from the symbol table. */ |
339681c0 L |
2443 | |
2444 | void | |
dbe2df79 | 2445 | elf_frob_file_before_adjust (void) |
339681c0 L |
2446 | { |
2447 | if (symbol_rootP) | |
2448 | { | |
2449 | symbolS *symp; | |
2450 | ||
2451 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) | |
00e6e13d | 2452 | if (!S_IS_DEFINED (symp)) |
79082ff0 | 2453 | { |
00e6e13d | 2454 | if (symbol_get_obj (symp)->versioned_name) |
79082ff0 L |
2455 | { |
2456 | char *p; | |
2457 | ||
2458 | /* The @@@ syntax is a special case. If the symbol is | |
2459 | not defined, 2 `@'s will be removed from the | |
2460 | versioned_name. */ | |
2461 | ||
2462 | p = strchr (symbol_get_obj (symp)->versioned_name, | |
2463 | ELF_VER_CHR); | |
85024cd8 | 2464 | if (p != NULL && p[1] == ELF_VER_CHR && p[2] == ELF_VER_CHR) |
79082ff0 L |
2465 | { |
2466 | size_t l = strlen (&p[3]) + 1; | |
dbe2df79 | 2467 | memmove (&p[1], &p[3], l); |
79082ff0 L |
2468 | } |
2469 | if (symbol_used_p (symp) == 0 | |
2470 | && symbol_used_in_reloc_p (symp) == 0) | |
2471 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
2472 | } | |
00e6e13d JJ |
2473 | |
2474 | /* If there was .weak foo, but foo was neither defined nor | |
2475 | used anywhere, remove it. */ | |
2476 | ||
2477 | else if (S_IS_WEAK (symp) | |
2478 | && symbol_used_p (symp) == 0 | |
2479 | && symbol_used_in_reloc_p (symp) == 0) | |
2480 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
79082ff0 | 2481 | } |
339681c0 L |
2482 | } |
2483 | } | |
2484 | ||
252b5132 RH |
2485 | /* It is required that we let write_relocs have the opportunity to |
2486 | optimize away fixups before output has begun, since it is possible | |
2487 | to eliminate all fixups for a section and thus we never should | |
2488 | have generated the relocation section. */ | |
2489 | ||
2490 | void | |
dbe2df79 | 2491 | elf_frob_file_after_relocs (void) |
252b5132 RH |
2492 | { |
2493 | #ifdef NEED_ECOFF_DEBUG | |
2494 | if (ECOFF_DEBUGGING) | |
2495 | /* Generate the ECOFF debugging information. */ | |
2496 | { | |
2497 | const struct ecoff_debug_swap *debug_swap; | |
2498 | struct ecoff_debug_info debug; | |
2499 | char *buf; | |
2500 | asection *sec; | |
2501 | ||
2502 | debug_swap | |
2503 | = get_elf_backend_data (stdoutput)->elf_backend_ecoff_debug_swap; | |
dbe2df79 | 2504 | know (debug_swap != NULL); |
252b5132 RH |
2505 | ecoff_build_debug (&debug.symbolic_header, &buf, debug_swap); |
2506 | ||
2507 | /* Set up the pointers in debug. */ | |
2508 | #define SET(ptr, offset, type) \ | |
2509 | debug.ptr = (type) (buf + debug.symbolic_header.offset) | |
2510 | ||
2511 | SET (line, cbLineOffset, unsigned char *); | |
dbe2df79 AM |
2512 | SET (external_dnr, cbDnOffset, void *); |
2513 | SET (external_pdr, cbPdOffset, void *); | |
2514 | SET (external_sym, cbSymOffset, void *); | |
2515 | SET (external_opt, cbOptOffset, void *); | |
252b5132 RH |
2516 | SET (external_aux, cbAuxOffset, union aux_ext *); |
2517 | SET (ss, cbSsOffset, char *); | |
dbe2df79 AM |
2518 | SET (external_fdr, cbFdOffset, void *); |
2519 | SET (external_rfd, cbRfdOffset, void *); | |
252b5132 RH |
2520 | /* ssext and external_ext are set up just below. */ |
2521 | ||
2522 | #undef SET | |
2523 | ||
2524 | /* Set up the external symbols. */ | |
2525 | debug.ssext = debug.ssext_end = NULL; | |
2526 | debug.external_ext = debug.external_ext_end = NULL; | |
b34976b6 | 2527 | if (! bfd_ecoff_debug_externals (stdoutput, &debug, debug_swap, TRUE, |
252b5132 | 2528 | elf_get_extr, elf_set_index)) |
6ce8b369 | 2529 | as_fatal (_("failed to set up debugging information: %s"), |
252b5132 RH |
2530 | bfd_errmsg (bfd_get_error ())); |
2531 | ||
2532 | sec = bfd_get_section_by_name (stdoutput, ".mdebug"); | |
9c2799c2 | 2533 | gas_assert (sec != NULL); |
252b5132 | 2534 | |
b34976b6 | 2535 | know (!stdoutput->output_has_begun); |
252b5132 RH |
2536 | |
2537 | /* We set the size of the section, call bfd_set_section_contents | |
2538 | to force the ELF backend to allocate a file position, and then | |
2539 | write out the data. FIXME: Is this really the best way to do | |
2540 | this? */ | |
587aac4e AM |
2541 | bfd_set_section_size |
2542 | (stdoutput, sec, bfd_ecoff_debug_size (stdoutput, &debug, debug_swap)); | |
252b5132 | 2543 | |
5f91fe03 | 2544 | /* Pass BUF to bfd_set_section_contents because this will |
13c56984 AM |
2545 | eventually become a call to fwrite, and ISO C prohibits |
2546 | passing a NULL pointer to a stdio function even if the | |
2547 | pointer will not be used. */ | |
dbe2df79 | 2548 | if (! bfd_set_section_contents (stdoutput, sec, buf, 0, 0)) |
6ce8b369 | 2549 | as_fatal (_("can't start writing .mdebug section: %s"), |
252b5132 RH |
2550 | bfd_errmsg (bfd_get_error ())); |
2551 | ||
b34976b6 | 2552 | know (stdoutput->output_has_begun); |
252b5132 RH |
2553 | know (sec->filepos != 0); |
2554 | ||
2555 | if (! bfd_ecoff_write_debug (stdoutput, &debug, debug_swap, | |
2556 | sec->filepos)) | |
6ce8b369 | 2557 | as_fatal (_("could not write .mdebug section: %s"), |
252b5132 RH |
2558 | bfd_errmsg (bfd_get_error ())); |
2559 | } | |
2560 | #endif /* NEED_ECOFF_DEBUG */ | |
2561 | } | |
2562 | ||
2563 | #ifdef SCO_ELF | |
2564 | ||
aaa2624b | 2565 | /* Heavily plagiarized from obj_elf_version. The idea is to emit the |
252b5132 RH |
2566 | SCO specific identifier in the .notes section to satisfy the SCO |
2567 | linker. | |
2568 | ||
2569 | This looks more complicated than it really is. As opposed to the | |
2570 | "obvious" solution, this should handle the cross dev cases | |
2571 | correctly. (i.e, hosting on a 64 bit big endian processor, but | |
2572 | generating SCO Elf code) Efficiency isn't a concern, as there | |
2573 | should be exactly one of these sections per object module. | |
2574 | ||
2575 | SCO OpenServer 5 identifies it's ELF modules with a standard ELF | |
2576 | .note section. | |
2577 | ||
fa306131 AM |
2578 | int_32 namesz = 4 ; Name size |
2579 | int_32 descsz = 12 ; Descriptive information | |
2580 | int_32 type = 1 ; | |
2581 | char name[4] = "SCO" ; Originator name ALWAYS SCO + NULL | |
252b5132 RH |
2582 | int_32 version = (major ver # << 16) | version of tools ; |
2583 | int_32 source = (tool_id << 16 ) | 1 ; | |
2584 | int_32 info = 0 ; These are set by the SCO tools, but we | |
13c56984 | 2585 | don't know enough about the source |
252b5132 RH |
2586 | environment to set them. SCO ld currently |
2587 | ignores them, and recommends we set them | |
2588 | to zero. */ | |
2589 | ||
2590 | #define SCO_MAJOR_VERSION 0x1 | |
2591 | #define SCO_MINOR_VERSION 0x1 | |
2592 | ||
2593 | void | |
dbe2df79 | 2594 | sco_id (void) |
252b5132 RH |
2595 | { |
2596 | ||
2597 | char *name; | |
2598 | unsigned int c; | |
2599 | char ch; | |
2600 | char *p; | |
2601 | asection *seg = now_seg; | |
2602 | subsegT subseg = now_subseg; | |
2603 | Elf_Internal_Note i_note; | |
2604 | Elf_External_Note e_note; | |
dbe2df79 | 2605 | asection *note_secp = NULL; |
252b5132 RH |
2606 | int i, len; |
2607 | ||
2608 | /* create the .note section */ | |
2609 | ||
2610 | note_secp = subseg_new (".note", 0); | |
2611 | bfd_set_section_flags (stdoutput, | |
2612 | note_secp, | |
2613 | SEC_HAS_CONTENTS | SEC_READONLY); | |
2614 | ||
2615 | /* process the version string */ | |
2616 | ||
fa306131 | 2617 | i_note.namesz = 4; |
252b5132 RH |
2618 | i_note.descsz = 12; /* 12 descriptive bytes */ |
2619 | i_note.type = NT_VERSION; /* Contains a version string */ | |
2620 | ||
2621 | p = frag_more (sizeof (i_note.namesz)); | |
dbe2df79 | 2622 | md_number_to_chars (p, i_note.namesz, 4); |
252b5132 RH |
2623 | |
2624 | p = frag_more (sizeof (i_note.descsz)); | |
dbe2df79 | 2625 | md_number_to_chars (p, i_note.descsz, 4); |
252b5132 RH |
2626 | |
2627 | p = frag_more (sizeof (i_note.type)); | |
dbe2df79 | 2628 | md_number_to_chars (p, i_note.type, 4); |
252b5132 RH |
2629 | |
2630 | p = frag_more (4); | |
fa306131 | 2631 | strcpy (p, "SCO"); |
252b5132 RH |
2632 | |
2633 | /* Note: this is the version number of the ELF we're representing */ | |
2634 | p = frag_more (4); | |
2635 | md_number_to_chars (p, (SCO_MAJOR_VERSION << 16) | (SCO_MINOR_VERSION), 4); | |
2636 | ||
2637 | /* Here, we pick a magic number for ourselves (yes, I "registered" | |
2638 | it with SCO. The bottom bit shows that we are compat with the | |
2639 | SCO ABI. */ | |
2640 | p = frag_more (4); | |
2641 | md_number_to_chars (p, 0x4c520000 | 0x0001, 4); | |
2642 | ||
2643 | /* If we knew (or cared) what the source language options were, we'd | |
2644 | fill them in here. SCO has given us permission to ignore these | |
2645 | and just set them to zero. */ | |
2646 | p = frag_more (4); | |
2647 | md_number_to_chars (p, 0x0000, 4); | |
fa306131 | 2648 | |
252b5132 RH |
2649 | frag_align (2, 0, 0); |
2650 | ||
2651 | /* We probably can't restore the current segment, for there likely | |
2652 | isn't one yet... */ | |
2653 | if (seg && subseg) | |
2654 | subseg_set (seg, subseg); | |
2655 | ||
2656 | } | |
2657 | ||
2658 | #endif /* SCO_ELF */ | |
2659 | ||
bc6b4acc RO |
2660 | static void |
2661 | elf_generate_asm_lineno (void) | |
2662 | { | |
2663 | #ifdef NEED_ECOFF_DEBUG | |
2664 | if (ECOFF_DEBUGGING) | |
2665 | ecoff_generate_asm_lineno (); | |
2666 | #endif | |
2667 | } | |
2668 | ||
2669 | static void | |
bd937d21 L |
2670 | elf_process_stab (segT sec ATTRIBUTE_UNUSED, |
2671 | int what ATTRIBUTE_UNUSED, | |
2672 | const char *string ATTRIBUTE_UNUSED, | |
2673 | int type ATTRIBUTE_UNUSED, | |
2674 | int other ATTRIBUTE_UNUSED, | |
2675 | int desc ATTRIBUTE_UNUSED) | |
bc6b4acc RO |
2676 | { |
2677 | #ifdef NEED_ECOFF_DEBUG | |
2678 | if (ECOFF_DEBUGGING) | |
2679 | ecoff_stab (sec, what, string, type, other, desc); | |
2680 | #endif | |
2681 | } | |
2682 | ||
5110c57e | 2683 | static int |
dbe2df79 | 2684 | elf_separate_stab_sections (void) |
5110c57e HPN |
2685 | { |
2686 | #ifdef NEED_ECOFF_DEBUG | |
2687 | return (!ECOFF_DEBUGGING); | |
2688 | #else | |
2689 | return 1; | |
2690 | #endif | |
2691 | } | |
2692 | ||
2693 | static void | |
dbe2df79 | 2694 | elf_init_stab_section (segT seg) |
5110c57e HPN |
2695 | { |
2696 | #ifdef NEED_ECOFF_DEBUG | |
2697 | if (!ECOFF_DEBUGGING) | |
2698 | #endif | |
2699 | obj_elf_init_stab_section (seg); | |
2700 | } | |
2701 | ||
252b5132 RH |
2702 | const struct format_ops elf_format_ops = |
2703 | { | |
2704 | bfd_target_elf_flavour, | |
4c63da97 AM |
2705 | 0, /* dfl_leading_underscore */ |
2706 | 1, /* emit_section_symbols */ | |
5110c57e HPN |
2707 | elf_begin, |
2708 | elf_file_symbol, | |
252b5132 RH |
2709 | elf_frob_symbol, |
2710 | elf_frob_file, | |
339681c0 | 2711 | elf_frob_file_before_adjust, |
a161fe53 | 2712 | 0, /* obj_frob_file_before_fix */ |
252b5132 RH |
2713 | elf_frob_file_after_relocs, |
2714 | elf_s_get_size, elf_s_set_size, | |
2715 | elf_s_get_align, elf_s_set_align, | |
4c63da97 | 2716 | elf_s_get_other, |
5110c57e | 2717 | elf_s_set_other, |
4c63da97 | 2718 | 0, /* s_get_desc */ |
5110c57e HPN |
2719 | 0, /* s_set_desc */ |
2720 | 0, /* s_get_type */ | |
2721 | 0, /* s_set_type */ | |
252b5132 | 2722 | elf_copy_symbol_attributes, |
bc6b4acc RO |
2723 | elf_generate_asm_lineno, |
2724 | elf_process_stab, | |
5110c57e HPN |
2725 | elf_separate_stab_sections, |
2726 | elf_init_stab_section, | |
252b5132 RH |
2727 | elf_sec_sym_ok_for_reloc, |
2728 | elf_pop_insert, | |
2729 | #ifdef NEED_ECOFF_DEBUG | |
2730 | elf_ecoff_set_ext, | |
2731 | #else | |
4c63da97 | 2732 | 0, /* ecoff_set_ext */ |
252b5132 | 2733 | #endif |
4c63da97 | 2734 | elf_obj_read_begin_hook, |
4cae74aa | 2735 | elf_obj_symbol_new_hook, |
645ea3ea AM |
2736 | 0, |
2737 | elf_adjust_symtab | |
252b5132 | 2738 | }; |