Commit | Line | Data |
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252b5132 | 1 | /* ELF object file format |
82704155 | 2 | Copyright (C) 1992-2019 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" | |
87ccc1b0 | 26 | #include "dwarf2dbg.h" |
252b5132 RH |
27 | |
28 | #ifndef ECOFF_DEBUGGING | |
29 | #define ECOFF_DEBUGGING 0 | |
30 | #else | |
31 | #define NEED_ECOFF_DEBUG | |
32 | #endif | |
33 | ||
34 | #ifdef NEED_ECOFF_DEBUG | |
35 | #include "ecoff.h" | |
36 | #endif | |
37 | ||
38 | #ifdef TC_ALPHA | |
39 | #include "elf/alpha.h" | |
40 | #endif | |
41 | ||
42 | #ifdef TC_MIPS | |
43 | #include "elf/mips.h" | |
44 | #endif | |
45 | ||
46 | #ifdef TC_PPC | |
47 | #include "elf/ppc.h" | |
48 | #endif | |
49 | ||
3b22753a L |
50 | #ifdef TC_I386 |
51 | #include "elf/x86-64.h" | |
52 | #endif | |
53 | ||
280d71bf DB |
54 | #ifdef TC_MEP |
55 | #include "elf/mep.h" | |
56 | #endif | |
57 | ||
36591ba1 SL |
58 | #ifdef TC_NIOS2 |
59 | #include "elf/nios2.h" | |
60 | #endif | |
61 | ||
93f11b16 DD |
62 | #ifdef TC_PRU |
63 | #include "elf/pru.h" | |
64 | #endif | |
65 | ||
dbe2df79 AM |
66 | static void obj_elf_line (int); |
67 | static void obj_elf_size (int); | |
68 | static void obj_elf_type (int); | |
69 | static void obj_elf_ident (int); | |
70 | static void obj_elf_weak (int); | |
71 | static void obj_elf_local (int); | |
72 | static void obj_elf_visibility (int); | |
73 | static void obj_elf_symver (int); | |
74 | static void obj_elf_subsection (int); | |
75 | static void obj_elf_popsection (int); | |
0420f52b | 76 | static void obj_elf_gnu_attribute (int); |
dbe2df79 | 77 | static void obj_elf_tls_common (int); |
13c56984 | 78 | static void obj_elf_lcomm (int); |
8fe53b44 | 79 | static void obj_elf_struct (int); |
252b5132 RH |
80 | |
81 | static const pseudo_typeS elf_pseudo_table[] = | |
82 | { | |
83 | {"comm", obj_elf_common, 0}, | |
9be1cda6 | 84 | {"common", obj_elf_common, 1}, |
252b5132 | 85 | {"ident", obj_elf_ident, 0}, |
13c56984 | 86 | {"lcomm", obj_elf_lcomm, 0}, |
252b5132 RH |
87 | {"local", obj_elf_local, 0}, |
88 | {"previous", obj_elf_previous, 0}, | |
89 | {"section", obj_elf_section, 0}, | |
90 | {"section.s", obj_elf_section, 0}, | |
91 | {"sect", obj_elf_section, 0}, | |
92 | {"sect.s", obj_elf_section, 0}, | |
9de8d8f1 RH |
93 | {"pushsection", obj_elf_section, 1}, |
94 | {"popsection", obj_elf_popsection, 0}, | |
252b5132 RH |
95 | {"size", obj_elf_size, 0}, |
96 | {"type", obj_elf_type, 0}, | |
97 | {"version", obj_elf_version, 0}, | |
98 | {"weak", obj_elf_weak, 0}, | |
99 | ||
bf514e21 | 100 | /* These define symbol visibility. */ |
2e13b764 NC |
101 | {"internal", obj_elf_visibility, STV_INTERNAL}, |
102 | {"hidden", obj_elf_visibility, STV_HIDDEN}, | |
103 | {"protected", obj_elf_visibility, STV_PROTECTED}, | |
104 | ||
252b5132 RH |
105 | /* These are used for stabs-in-elf configurations. */ |
106 | {"line", obj_elf_line, 0}, | |
107 | ||
108 | /* This is a GNU extension to handle symbol versions. */ | |
109 | {"symver", obj_elf_symver, 0}, | |
110 | ||
111 | /* A GNU extension to change subsection only. */ | |
112 | {"subsection", obj_elf_subsection, 0}, | |
113 | ||
114 | /* These are GNU extensions to aid in garbage collecting C++ vtables. */ | |
68d20676 NC |
115 | {"vtable_inherit", obj_elf_vtable_inherit, 0}, |
116 | {"vtable_entry", obj_elf_vtable_entry, 0}, | |
252b5132 | 117 | |
0420f52b MR |
118 | /* A GNU extension for object attributes. */ |
119 | {"gnu_attribute", obj_elf_gnu_attribute, 0}, | |
120 | ||
bf514e21 | 121 | /* These are used for dwarf. */ |
252b5132 RH |
122 | {"2byte", cons, 2}, |
123 | {"4byte", cons, 4}, | |
124 | {"8byte", cons, 8}, | |
87ccc1b0 | 125 | /* These are used for dwarf2. */ |
68d20676 | 126 | { "file", dwarf2_directive_file, 0 }, |
87ccc1b0 | 127 | { "loc", dwarf2_directive_loc, 0 }, |
07a53e5c | 128 | { "loc_mark_labels", dwarf2_directive_loc_mark_labels, 0 }, |
252b5132 RH |
129 | |
130 | /* We need to trap the section changing calls to handle .previous. */ | |
131 | {"data", obj_elf_data, 0}, | |
8fe53b44 JB |
132 | {"offset", obj_elf_struct, 0}, |
133 | {"struct", obj_elf_struct, 0}, | |
252b5132 RH |
134 | {"text", obj_elf_text, 0}, |
135 | ||
13ae64f3 JJ |
136 | {"tls_common", obj_elf_tls_common, 0}, |
137 | ||
252b5132 | 138 | /* End sentinel. */ |
ab9da554 | 139 | {NULL, NULL, 0}, |
252b5132 RH |
140 | }; |
141 | ||
142 | static const pseudo_typeS ecoff_debug_pseudo_table[] = | |
143 | { | |
144 | #ifdef NEED_ECOFF_DEBUG | |
145 | /* COFF style debugging information for ECOFF. .ln is not used; .loc | |
146 | is used instead. */ | |
147 | { "def", ecoff_directive_def, 0 }, | |
148 | { "dim", ecoff_directive_dim, 0 }, | |
149 | { "endef", ecoff_directive_endef, 0 }, | |
150 | { "file", ecoff_directive_file, 0 }, | |
151 | { "scl", ecoff_directive_scl, 0 }, | |
152 | { "tag", ecoff_directive_tag, 0 }, | |
153 | { "val", ecoff_directive_val, 0 }, | |
154 | ||
155 | /* COFF debugging requires pseudo-ops .size and .type, but ELF | |
156 | already has meanings for those. We use .esize and .etype | |
157 | instead. These are only generated by gcc anyhow. */ | |
158 | { "esize", ecoff_directive_size, 0 }, | |
159 | { "etype", ecoff_directive_type, 0 }, | |
160 | ||
161 | /* ECOFF specific debugging information. */ | |
37f9ec62 | 162 | { "aent", ecoff_directive_ent, 1 }, |
252b5132 RH |
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 | { |
8d1015a8 AM |
263 | asymbol *bsym; |
264 | ||
c04f5787 AM |
265 | if (!appfile |
266 | || symbol_rootP == NULL | |
8d1015a8 AM |
267 | || (bsym = symbol_get_bfdsym (symbol_rootP)) == NULL |
268 | || (bsym->flags & BSF_FILE) == 0) | |
c04f5787 AM |
269 | { |
270 | symbolS *sym; | |
e57e6ddc | 271 | size_t name_length; |
252b5132 | 272 | |
c04f5787 AM |
273 | sym = symbol_new (s, absolute_section, 0, NULL); |
274 | symbol_set_frag (sym, &zero_address_frag); | |
efa19bfd JB |
275 | |
276 | name_length = strlen (s); | |
277 | if (name_length > strlen (S_GET_NAME (sym))) | |
278 | { | |
279 | obstack_grow (¬es, s, name_length + 1); | |
1e9cc1c2 | 280 | S_SET_NAME (sym, (const char *) obstack_finish (¬es)); |
efa19bfd JB |
281 | } |
282 | else | |
283 | strcpy ((char *) S_GET_NAME (sym), s); | |
284 | ||
c04f5787 | 285 | symbol_get_bfdsym (sym)->flags |= BSF_FILE; |
252b5132 | 286 | |
fbdf9406 | 287 | if (symbol_rootP != sym |
8d1015a8 AM |
288 | && ((bsym = symbol_get_bfdsym (symbol_rootP)) == NULL |
289 | || (bsym->flags & BSF_FILE) == 0)) | |
c04f5787 AM |
290 | { |
291 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); | |
292 | symbol_insert (sym, symbol_rootP, &symbol_rootP, &symbol_lastP); | |
fbdf9406 JB |
293 | } |
294 | ||
252b5132 | 295 | #ifdef DEBUG |
fbdf9406 | 296 | verify_symbol_chain (symbol_rootP, symbol_lastP); |
252b5132 RH |
297 | #endif |
298 | } | |
299 | ||
300 | #ifdef NEED_ECOFF_DEBUG | |
f17c130b | 301 | ecoff_new_file (s, appfile); |
252b5132 RH |
302 | #endif |
303 | } | |
304 | ||
e13bab5a AM |
305 | /* Called from read.c:s_comm after we've parsed .comm symbol, size. |
306 | Parse a possible alignment value. */ | |
307 | ||
3b22753a | 308 | symbolS * |
e13bab5a | 309 | elf_common_parse (int ignore ATTRIBUTE_UNUSED, symbolS *symbolP, addressT size) |
252b5132 | 310 | { |
e13bab5a AM |
311 | addressT align = 0; |
312 | int is_local = symbol_get_obj (symbolP)->local; | |
252b5132 | 313 | |
e13bab5a | 314 | if (*input_line_pointer == ',') |
9be1cda6 | 315 | { |
e13bab5a | 316 | char *save = input_line_pointer; |
9be1cda6 | 317 | |
252b5132 RH |
318 | input_line_pointer++; |
319 | SKIP_WHITESPACE (); | |
e13bab5a AM |
320 | |
321 | if (*input_line_pointer == '"') | |
252b5132 | 322 | { |
e13bab5a AM |
323 | /* For sparc. Accept .common symbol, length, "bss" */ |
324 | input_line_pointer++; | |
325 | /* Some use the dot, some don't. */ | |
326 | if (*input_line_pointer == '.') | |
327 | input_line_pointer++; | |
328 | /* Some say data, some say bss. */ | |
329 | if (strncmp (input_line_pointer, "bss\"", 4) == 0) | |
330 | input_line_pointer += 4; | |
331 | else if (strncmp (input_line_pointer, "data\"", 5) == 0) | |
332 | input_line_pointer += 5; | |
333 | else | |
252b5132 | 334 | { |
e13bab5a AM |
335 | char *p = input_line_pointer; |
336 | char c; | |
337 | ||
338 | while (*--p != '"') | |
339 | ; | |
340 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
341 | if (*input_line_pointer++ == '"') | |
342 | break; | |
343 | c = *input_line_pointer; | |
344 | *input_line_pointer = '\0'; | |
345 | as_bad (_("bad .common segment %s"), p); | |
346 | *input_line_pointer = c; | |
347 | ignore_rest_of_line (); | |
348 | return NULL; | |
252b5132 | 349 | } |
e13bab5a AM |
350 | /* ??? Don't ask me why these are always global. */ |
351 | is_local = 0; | |
252b5132 RH |
352 | } |
353 | else | |
354 | { | |
e13bab5a AM |
355 | input_line_pointer = save; |
356 | align = parse_align (is_local); | |
357 | if (align == (addressT) -1) | |
358 | return NULL; | |
252b5132 RH |
359 | } |
360 | } | |
e13bab5a AM |
361 | |
362 | if (is_local) | |
363 | { | |
364 | bss_alloc (symbolP, size, align); | |
365 | S_CLEAR_EXTERNAL (symbolP); | |
366 | } | |
252b5132 RH |
367 | else |
368 | { | |
e13bab5a AM |
369 | S_SET_VALUE (symbolP, size); |
370 | S_SET_ALIGN (symbolP, align); | |
371 | S_SET_EXTERNAL (symbolP); | |
3b22753a | 372 | S_SET_SEGMENT (symbolP, elf_com_section_ptr); |
252b5132 RH |
373 | } |
374 | ||
49309057 | 375 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; |
252b5132 | 376 | |
13ae64f3 | 377 | return symbolP; |
252b5132 RH |
378 | } |
379 | ||
13ae64f3 | 380 | void |
dbe2df79 | 381 | obj_elf_common (int is_common) |
13ae64f3 | 382 | { |
e13bab5a AM |
383 | if (flag_mri && is_common) |
384 | s_mri_common (0); | |
385 | else | |
386 | s_comm_internal (0, elf_common_parse); | |
13ae64f3 JJ |
387 | } |
388 | ||
389 | static void | |
dbe2df79 | 390 | obj_elf_tls_common (int ignore ATTRIBUTE_UNUSED) |
13ae64f3 | 391 | { |
e13bab5a | 392 | symbolS *symbolP = s_comm_internal (0, elf_common_parse); |
13ae64f3 JJ |
393 | |
394 | if (symbolP) | |
395 | symbol_get_bfdsym (symbolP)->flags |= BSF_THREAD_LOCAL; | |
396 | } | |
397 | ||
13c56984 AM |
398 | static void |
399 | obj_elf_lcomm (int ignore ATTRIBUTE_UNUSED) | |
400 | { | |
401 | symbolS *symbolP = s_comm_internal (0, s_lcomm_internal); | |
402 | ||
403 | if (symbolP) | |
404 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; | |
405 | } | |
406 | ||
6e8bd58f NS |
407 | static symbolS * |
408 | get_sym_from_input_line_and_check (void) | |
409 | { | |
410 | char *name; | |
411 | char c; | |
412 | symbolS *sym; | |
413 | ||
d02603dc | 414 | c = get_symbol_name (& name); |
6e8bd58f NS |
415 | sym = symbol_find_or_make (name); |
416 | *input_line_pointer = c; | |
d02603dc | 417 | SKIP_WHITESPACE_AFTER_NAME (); |
6e8bd58f NS |
418 | |
419 | /* There is no symbol name if input_line_pointer has not moved. */ | |
420 | if (name == input_line_pointer) | |
421 | as_bad (_("Missing symbol name in directive")); | |
422 | return sym; | |
423 | } | |
424 | ||
252b5132 | 425 | static void |
dbe2df79 | 426 | obj_elf_local (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 427 | { |
252b5132 RH |
428 | int c; |
429 | symbolS *symbolP; | |
430 | ||
431 | do | |
432 | { | |
01642c12 | 433 | symbolP = get_sym_from_input_line_and_check (); |
6e8bd58f | 434 | c = *input_line_pointer; |
252b5132 | 435 | S_CLEAR_EXTERNAL (symbolP); |
49309057 | 436 | symbol_get_obj (symbolP)->local = 1; |
252b5132 RH |
437 | if (c == ',') |
438 | { | |
439 | input_line_pointer++; | |
440 | SKIP_WHITESPACE (); | |
441 | if (*input_line_pointer == '\n') | |
442 | c = '\n'; | |
443 | } | |
444 | } | |
445 | while (c == ','); | |
446 | demand_empty_rest_of_line (); | |
447 | } | |
448 | ||
449 | static void | |
dbe2df79 | 450 | obj_elf_weak (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 451 | { |
252b5132 RH |
452 | int c; |
453 | symbolS *symbolP; | |
454 | ||
455 | do | |
456 | { | |
01642c12 | 457 | symbolP = get_sym_from_input_line_and_check (); |
6e8bd58f | 458 | c = *input_line_pointer; |
252b5132 | 459 | S_SET_WEAK (symbolP); |
252b5132 RH |
460 | if (c == ',') |
461 | { | |
462 | input_line_pointer++; | |
463 | SKIP_WHITESPACE (); | |
464 | if (*input_line_pointer == '\n') | |
465 | c = '\n'; | |
466 | } | |
467 | } | |
468 | while (c == ','); | |
469 | demand_empty_rest_of_line (); | |
470 | } | |
471 | ||
2e13b764 | 472 | static void |
dbe2df79 | 473 | obj_elf_visibility (int visibility) |
2e13b764 | 474 | { |
2e13b764 NC |
475 | int c; |
476 | symbolS *symbolP; | |
477 | asymbol *bfdsym; | |
478 | elf_symbol_type *elfsym; | |
479 | ||
480 | do | |
481 | { | |
6e8bd58f | 482 | symbolP = get_sym_from_input_line_and_check (); |
fa306131 | 483 | |
2e13b764 NC |
484 | bfdsym = symbol_get_bfdsym (symbolP); |
485 | elfsym = elf_symbol_from (bfd_asymbol_bfd (bfdsym), bfdsym); | |
fa306131 | 486 | |
9c2799c2 | 487 | gas_assert (elfsym); |
fa306131 | 488 | |
20e420c2 RH |
489 | elfsym->internal_elf_sym.st_other &= ~3; |
490 | elfsym->internal_elf_sym.st_other |= visibility; | |
fa306131 | 491 | |
6e8bd58f | 492 | c = *input_line_pointer; |
2e13b764 NC |
493 | if (c == ',') |
494 | { | |
495 | input_line_pointer ++; | |
fa306131 | 496 | |
2e13b764 | 497 | SKIP_WHITESPACE (); |
fa306131 | 498 | |
2e13b764 NC |
499 | if (*input_line_pointer == '\n') |
500 | c = '\n'; | |
501 | } | |
502 | } | |
503 | while (c == ','); | |
fa306131 | 504 | |
2e13b764 NC |
505 | demand_empty_rest_of_line (); |
506 | } | |
507 | ||
252b5132 RH |
508 | static segT previous_section; |
509 | static int previous_subsection; | |
510 | ||
9de8d8f1 RH |
511 | struct section_stack |
512 | { | |
513 | struct section_stack *next; | |
514 | segT seg, prev_seg; | |
515 | int subseg, prev_subseg; | |
516 | }; | |
517 | ||
518 | static struct section_stack *section_stack; | |
519 | ||
a91e1603 L |
520 | /* Match both section group name and the sh_info field. */ |
521 | struct section_match | |
522 | { | |
523 | const char *group_name; | |
524 | unsigned int info; | |
525 | }; | |
526 | ||
fafe6678 | 527 | static bfd_boolean |
86654c12 L |
528 | get_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *inf) |
529 | { | |
a91e1603 L |
530 | struct section_match *match = (struct section_match *) inf; |
531 | const char *gname = match->group_name; | |
86654c12 | 532 | const char *group_name = elf_group_name (sec); |
a91e1603 | 533 | unsigned int info = elf_section_data (sec)->this_hdr.sh_info; |
01fb1836 | 534 | |
a91e1603 L |
535 | return (info == match->info |
536 | && (group_name == gname | |
537 | || (group_name != NULL | |
538 | && gname != NULL | |
539 | && strcmp (group_name, gname) == 0))); | |
86654c12 L |
540 | } |
541 | ||
252b5132 RH |
542 | /* Handle the .section pseudo-op. This code supports two different |
543 | syntaxes. | |
544 | ||
545 | The first is found on Solaris, and looks like | |
546 | .section ".sec1",#alloc,#execinstr,#write | |
547 | Here the names after '#' are the SHF_* flags to turn on for the | |
548 | section. I'm not sure how it determines the SHT_* type (BFD | |
549 | doesn't really give us control over the type, anyhow). | |
550 | ||
551 | The second format is found on UnixWare, and probably most SVR4 | |
552 | machines, and looks like | |
553 | .section .sec1,"a",@progbits | |
554 | The quoted string may contain any combination of a, w, x, and | |
555 | represents the SHF_* flags to turn on for the section. The string | |
556 | beginning with '@' can be progbits or nobits. There should be | |
557 | other possibilities, but I don't know what they are. In any case, | |
558 | BFD doesn't really let us set the section type. */ | |
559 | ||
cca86cc8 | 560 | void |
dbe2df79 | 561 | obj_elf_change_section (const char *name, |
9fb71ee4 | 562 | unsigned int type, |
a91e1603 | 563 | unsigned int info, |
01e1a5bc | 564 | bfd_vma attr, |
dbe2df79 AM |
565 | int entsize, |
566 | const char *group_name, | |
567 | int linkonce, | |
568 | int push) | |
252b5132 | 569 | { |
fafe6678 | 570 | asection *old_sec; |
252b5132 | 571 | segT sec; |
742f45cf | 572 | flagword flags; |
551b43fd | 573 | const struct elf_backend_data *bed; |
f61e8019 | 574 | const struct bfd_elf_special_section *ssect; |
a91e1603 | 575 | struct section_match match; |
252b5132 RH |
576 | |
577 | #ifdef md_flush_pending_output | |
578 | md_flush_pending_output (); | |
579 | #endif | |
580 | ||
9de8d8f1 RH |
581 | /* Switch to the section, creating it if necessary. */ |
582 | if (push) | |
583 | { | |
584 | struct section_stack *elt; | |
325801bd | 585 | elt = XNEW (struct section_stack); |
9de8d8f1 RH |
586 | elt->next = section_stack; |
587 | elt->seg = now_seg; | |
588 | elt->prev_seg = previous_section; | |
589 | elt->subseg = now_subseg; | |
590 | elt->prev_subseg = previous_subsection; | |
591 | section_stack = elt; | |
592 | } | |
593 | previous_section = now_seg; | |
594 | previous_subsection = now_subseg; | |
595 | ||
a91e1603 L |
596 | match.group_name = group_name; |
597 | match.info = info; | |
fafe6678 | 598 | old_sec = bfd_get_section_by_name_if (stdoutput, name, get_section, |
a91e1603 | 599 | (void *) &match); |
fafe6678 | 600 | if (old_sec) |
86654c12 | 601 | { |
fafe6678 | 602 | sec = old_sec; |
86654c12 L |
603 | subseg_set (sec, 0); |
604 | } | |
605 | else | |
606 | sec = subseg_force_new (name, 0); | |
607 | ||
551b43fd AM |
608 | bed = get_elf_backend_data (stdoutput); |
609 | ssect = (*bed->get_sec_type_attr) (stdoutput, sec); | |
9de8d8f1 | 610 | |
f61e8019 | 611 | if (ssect != NULL) |
2f89ff8d | 612 | { |
ea8f8eab L |
613 | bfd_boolean override = FALSE; |
614 | ||
2f89ff8d | 615 | if (type == SHT_NULL) |
f61e8019 AM |
616 | type = ssect->type; |
617 | else if (type != ssect->type) | |
2f89ff8d | 618 | { |
fafe6678 | 619 | if (old_sec == NULL |
23ddb850 | 620 | /* Some older versions of gcc will emit |
7ed1d346 | 621 | |
2f89ff8d | 622 | .section .init_array,"aw",@progbits |
7ed1d346 | 623 | |
2f89ff8d | 624 | for __attribute__ ((section (".init_array"))). |
3b22753a | 625 | "@progbits" is incorrect. Also for x86-64 large bss |
23ddb850 | 626 | sections, some older versions of gcc will emit |
3b22753a L |
627 | |
628 | .section .lbss,"aw",@progbits | |
629 | ||
2f89ff8d | 630 | "@progbits" is incorrect. */ |
3b22753a L |
631 | #ifdef TC_I386 |
632 | && (bed->s->arch_size != 64 | |
633 | || !(ssect->attr & SHF_X86_64_LARGE)) | |
634 | #endif | |
f61e8019 AM |
635 | && ssect->type != SHT_INIT_ARRAY |
636 | && ssect->type != SHT_FINI_ARRAY | |
637 | && ssect->type != SHT_PREINIT_ARRAY) | |
2f89ff8d L |
638 | { |
639 | /* We allow to specify any type for a .note section. */ | |
9fb71ee4 NC |
640 | if (ssect->type != SHT_NOTE |
641 | /* Processor and application defined types are allowed too. */ | |
642 | && type < SHT_LOPROC) | |
2f89ff8d L |
643 | as_warn (_("setting incorrect section type for %s"), |
644 | name); | |
645 | } | |
646 | else | |
647 | { | |
648 | as_warn (_("ignoring incorrect section type for %s"), | |
742f45cf | 649 | name); |
f61e8019 | 650 | type = ssect->type; |
2f89ff8d L |
651 | } |
652 | } | |
653 | ||
9fb71ee4 NC |
654 | if (old_sec == NULL && ((attr & ~(SHF_MASKOS | SHF_MASKPROC)) |
655 | & ~ssect->attr) != 0) | |
2f89ff8d L |
656 | { |
657 | /* As a GNU extension, we permit a .note section to be | |
f61e8019 | 658 | allocatable. If the linker sees an allocatable .note |
2f89ff8d | 659 | section, it will create a PT_NOTE segment in the output |
92191b29 | 660 | file. We also allow "x" for .note.GNU-stack. */ |
f61e8019 AM |
661 | if (ssect->type == SHT_NOTE |
662 | && (attr == SHF_ALLOC || attr == SHF_EXECINSTR)) | |
663 | ; | |
664 | /* Allow different SHF_MERGE and SHF_STRINGS if we have | |
665 | something like .rodata.str. */ | |
666 | else if (ssect->suffix_length == -2 | |
667 | && name[ssect->prefix_length] == '.' | |
ea8f8eab L |
668 | && (attr |
669 | & ~ssect->attr | |
670 | & ~SHF_MERGE | |
671 | & ~SHF_STRINGS) == 0) | |
f61e8019 | 672 | ; |
ea8f8eab L |
673 | /* .interp, .strtab and .symtab can have SHF_ALLOC. */ |
674 | else if (attr == SHF_ALLOC | |
675 | && (strcmp (name, ".interp") == 0 | |
676 | || strcmp (name, ".strtab") == 0 | |
677 | || strcmp (name, ".symtab") == 0)) | |
678 | override = TRUE; | |
b9f18452 L |
679 | /* .note.GNU-stack can have SHF_EXECINSTR. */ |
680 | else if (attr == SHF_EXECINSTR | |
681 | && strcmp (name, ".note.GNU-stack") == 0) | |
682 | override = TRUE; | |
7f841127 L |
683 | #ifdef TC_ALPHA |
684 | /* A section on Alpha may have SHF_ALPHA_GPREL. */ | |
685 | else if ((attr & ~ssect->attr) == SHF_ALPHA_GPREL) | |
686 | override = TRUE; | |
708e2187 NC |
687 | #endif |
688 | #ifdef TC_RX | |
689 | else if (attr == (SHF_EXECINSTR | SHF_WRITE | SHF_ALLOC) | |
690 | && (ssect->type == SHT_INIT_ARRAY | |
691 | || ssect->type == SHT_FINI_ARRAY | |
692 | || ssect->type == SHT_PREINIT_ARRAY)) | |
693 | /* RX init/fini arrays can and should have the "awx" attributes set. */ | |
694 | ; | |
7f841127 | 695 | #endif |
f61e8019 | 696 | else |
ea8f8eab | 697 | { |
86654c12 L |
698 | if (group_name == NULL) |
699 | as_warn (_("setting incorrect section attributes for %s"), | |
700 | name); | |
ea8f8eab L |
701 | override = TRUE; |
702 | } | |
2f89ff8d | 703 | } |
9fb71ee4 | 704 | |
fafe6678 | 705 | if (!override && old_sec == NULL) |
f61e8019 | 706 | attr |= ssect->attr; |
2f89ff8d | 707 | } |
742f45cf AM |
708 | |
709 | /* Convert ELF type and flags to BFD flags. */ | |
710 | flags = (SEC_RELOC | |
711 | | ((attr & SHF_WRITE) ? 0 : SEC_READONLY) | |
712 | | ((attr & SHF_ALLOC) ? SEC_ALLOC : 0) | |
713 | | (((attr & SHF_ALLOC) && type != SHT_NOBITS) ? SEC_LOAD : 0) | |
f5fa8ca2 JJ |
714 | | ((attr & SHF_EXECINSTR) ? SEC_CODE : 0) |
715 | | ((attr & SHF_MERGE) ? SEC_MERGE : 0) | |
13ae64f3 | 716 | | ((attr & SHF_STRINGS) ? SEC_STRINGS : 0) |
18ae9cc1 | 717 | | ((attr & SHF_EXCLUDE) ? SEC_EXCLUDE: 0) |
13ae64f3 | 718 | | ((attr & SHF_TLS) ? SEC_THREAD_LOCAL : 0)); |
9de8d8f1 | 719 | #ifdef md_elf_section_flags |
742f45cf | 720 | flags = md_elf_section_flags (flags, attr, type); |
9de8d8f1 RH |
721 | #endif |
722 | ||
86654c12 L |
723 | if (linkonce) |
724 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
725 | ||
fafe6678 | 726 | if (old_sec == NULL) |
742f45cf AM |
727 | { |
728 | symbolS *secsym; | |
729 | ||
94be91de JB |
730 | if (type == SHT_NULL) |
731 | type = bfd_elf_get_default_section_type (flags); | |
7a6d0b32 JB |
732 | elf_section_type (sec) = type; |
733 | elf_section_flags (sec) = attr; | |
a91e1603 | 734 | elf_section_data (sec)->this_hdr.sh_info = info; |
7a6d0b32 | 735 | |
9de8d8f1 RH |
736 | /* Prevent SEC_HAS_CONTENTS from being inadvertently set. */ |
737 | if (type == SHT_NOBITS) | |
13c56984 | 738 | seg_info (sec)->bss = 1; |
9de8d8f1 RH |
739 | |
740 | bfd_set_section_flags (stdoutput, sec, flags); | |
f5fa8ca2 JJ |
741 | if (flags & SEC_MERGE) |
742 | sec->entsize = entsize; | |
aa1f4858 | 743 | elf_group_name (sec) = group_name; |
9de8d8f1 RH |
744 | |
745 | /* Add a symbol for this section to the symbol table. */ | |
746 | secsym = symbol_find (name); | |
747 | if (secsym != NULL) | |
748 | symbol_set_bfdsym (secsym, sec->symbol); | |
749 | else | |
13c56984 | 750 | symbol_table_insert (section_symbol (sec)); |
9de8d8f1 | 751 | } |
7a6d0b32 | 752 | else |
742f45cf | 753 | { |
7a6d0b32 JB |
754 | if (type != SHT_NULL |
755 | && (unsigned) type != elf_section_type (old_sec)) | |
756 | as_warn (_("ignoring changed section type for %s"), name); | |
757 | ||
758 | if (attr != 0) | |
759 | { | |
760 | /* If section attributes are specified the second time we see a | |
761 | particular section, then check that they are the same as we | |
762 | saw the first time. */ | |
763 | if (((old_sec->flags ^ flags) | |
764 | & (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE | |
765 | | SEC_EXCLUDE | SEC_SORT_ENTRIES | SEC_MERGE | SEC_STRINGS | |
766 | | SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD | |
767 | | SEC_THREAD_LOCAL))) | |
768 | as_warn (_("ignoring changed section attributes for %s"), name); | |
9fb71ee4 NC |
769 | else |
770 | /* FIXME: Maybe we should consider removing a previously set | |
771 | processor or application specific attribute as suspicious ? */ | |
772 | elf_section_flags (sec) = attr; | |
773 | ||
7a6d0b32 JB |
774 | if ((flags & SEC_MERGE) && old_sec->entsize != (unsigned) entsize) |
775 | as_warn (_("ignoring changed section entity size for %s"), name); | |
776 | } | |
742f45cf | 777 | } |
9de8d8f1 RH |
778 | |
779 | #ifdef md_elf_section_change_hook | |
742f45cf | 780 | md_elf_section_change_hook (); |
9de8d8f1 RH |
781 | #endif |
782 | } | |
783 | ||
01e1a5bc | 784 | static bfd_vma |
df3a023b AM |
785 | obj_elf_parse_section_letters (char *str, size_t len, |
786 | bfd_boolean *is_clone, bfd_vma *gnu_attr) | |
9de8d8f1 | 787 | { |
01e1a5bc | 788 | bfd_vma attr = 0; |
f6616a06 | 789 | *is_clone = FALSE; |
9de8d8f1 RH |
790 | |
791 | while (len > 0) | |
792 | { | |
793 | switch (*str) | |
794 | { | |
795 | case 'a': | |
796 | attr |= SHF_ALLOC; | |
797 | break; | |
18ae9cc1 L |
798 | case 'e': |
799 | attr |= SHF_EXCLUDE; | |
800 | break; | |
9de8d8f1 RH |
801 | case 'w': |
802 | attr |= SHF_WRITE; | |
803 | break; | |
804 | case 'x': | |
805 | attr |= SHF_EXECINSTR; | |
806 | break; | |
9469ddf0 | 807 | case 'M': |
f5fa8ca2 JJ |
808 | attr |= SHF_MERGE; |
809 | break; | |
9469ddf0 | 810 | case 'S': |
f5fa8ca2 JJ |
811 | attr |= SHF_STRINGS; |
812 | break; | |
060adf0e AM |
813 | case 'G': |
814 | attr |= SHF_GROUP; | |
815 | break; | |
13ae64f3 JJ |
816 | case 'T': |
817 | attr |= SHF_TLS; | |
818 | break; | |
a91e1603 | 819 | case 'd': |
df3a023b | 820 | *gnu_attr |= SHF_GNU_MBIND; |
a91e1603 | 821 | break; |
01642c12 | 822 | case '?': |
f6616a06 | 823 | *is_clone = TRUE; |
01642c12 | 824 | break; |
34105363 L |
825 | /* Compatibility. */ |
826 | case 'm': | |
827 | if (*(str - 1) == 'a') | |
828 | { | |
829 | attr |= SHF_MERGE; | |
830 | if (len > 1 && str[1] == 's') | |
831 | { | |
832 | attr |= SHF_STRINGS; | |
833 | str++, len--; | |
834 | } | |
835 | break; | |
836 | } | |
1a0670f3 | 837 | /* Fall through. */ |
9de8d8f1 RH |
838 | default: |
839 | { | |
6d4af3c2 AM |
840 | const char *bad_msg = _("unrecognized .section attribute:" |
841 | " want a,e,w,x,M,S,G,T or number"); | |
9de8d8f1 | 842 | #ifdef md_elf_section_letter |
01e1a5bc | 843 | bfd_vma md_attr = md_elf_section_letter (*str, &bad_msg); |
8f3bae45 | 844 | if (md_attr != (bfd_vma) -1) |
9de8d8f1 RH |
845 | attr |= md_attr; |
846 | else | |
847 | #endif | |
9fb71ee4 NC |
848 | if (ISDIGIT (*str)) |
849 | { | |
850 | char * end; | |
851 | ||
852 | attr |= strtoul (str, & end, 0); | |
853 | /* Update str and len, allowing for the fact that | |
854 | we will execute str++ and len-- below. */ | |
855 | end --; | |
856 | len -= (end - str); | |
857 | str = end; | |
858 | } | |
859 | else | |
860 | as_fatal ("%s", bad_msg); | |
9de8d8f1 RH |
861 | } |
862 | break; | |
863 | } | |
864 | str++, len--; | |
865 | } | |
866 | ||
867 | return attr; | |
868 | } | |
869 | ||
8d28c9d7 | 870 | static int |
44bf2362 | 871 | obj_elf_section_type (char *str, size_t len, bfd_boolean warn) |
9de8d8f1 RH |
872 | { |
873 | if (len == 8 && strncmp (str, "progbits", 8) == 0) | |
874 | return SHT_PROGBITS; | |
875 | if (len == 6 && strncmp (str, "nobits", 6) == 0) | |
876 | return SHT_NOBITS; | |
34f70875 L |
877 | if (len == 4 && strncmp (str, "note", 4) == 0) |
878 | return SHT_NOTE; | |
10b016c2 PB |
879 | if (len == 10 && strncmp (str, "init_array", 10) == 0) |
880 | return SHT_INIT_ARRAY; | |
881 | if (len == 10 && strncmp (str, "fini_array", 10) == 0) | |
882 | return SHT_FINI_ARRAY; | |
883 | if (len == 13 && strncmp (str, "preinit_array", 13) == 0) | |
884 | return SHT_PREINIT_ARRAY; | |
9de8d8f1 RH |
885 | |
886 | #ifdef md_elf_section_type | |
887 | { | |
888 | int md_type = md_elf_section_type (str, len); | |
889 | if (md_type >= 0) | |
890 | return md_type; | |
891 | } | |
892 | #endif | |
893 | ||
9fb71ee4 NC |
894 | if (ISDIGIT (*str)) |
895 | { | |
896 | char * end; | |
897 | int type = strtoul (str, & end, 0); | |
898 | ||
899 | if (warn && (size_t) (end - str) != len) | |
900 | as_warn (_("extraneous characters at end of numeric section type")); | |
901 | ||
902 | return type; | |
903 | } | |
904 | ||
44bf2362 NC |
905 | if (warn) |
906 | as_warn (_("unrecognized section type")); | |
907 | return 0; | |
908 | } | |
909 | ||
01e1a5bc | 910 | static bfd_vma |
44bf2362 NC |
911 | obj_elf_section_word (char *str, size_t len, int *type) |
912 | { | |
913 | int ret; | |
914 | ||
915 | if (len == 5 && strncmp (str, "write", 5) == 0) | |
916 | return SHF_WRITE; | |
917 | if (len == 5 && strncmp (str, "alloc", 5) == 0) | |
918 | return SHF_ALLOC; | |
919 | if (len == 9 && strncmp (str, "execinstr", 9) == 0) | |
920 | return SHF_EXECINSTR; | |
18ae9cc1 L |
921 | if (len == 7 && strncmp (str, "exclude", 7) == 0) |
922 | return SHF_EXCLUDE; | |
44bf2362 NC |
923 | if (len == 3 && strncmp (str, "tls", 3) == 0) |
924 | return SHF_TLS; | |
925 | ||
926 | #ifdef md_elf_section_word | |
927 | { | |
01e1a5bc NC |
928 | bfd_vma md_attr = md_elf_section_word (str, len); |
929 | if (md_attr > 0) | |
44bf2362 NC |
930 | return md_attr; |
931 | } | |
932 | #endif | |
933 | ||
934 | ret = obj_elf_section_type (str, len, FALSE); | |
935 | if (ret != 0) | |
936 | *type = ret; | |
937 | else | |
938 | as_warn (_("unrecognized section attribute")); | |
939 | ||
9de8d8f1 RH |
940 | return 0; |
941 | } | |
942 | ||
6ce8b369 | 943 | /* Get name of section. */ |
82b8a785 | 944 | const char * |
dbe2df79 | 945 | obj_elf_section_name (void) |
6ce8b369 AM |
946 | { |
947 | char *name; | |
948 | ||
949 | SKIP_WHITESPACE (); | |
950 | if (*input_line_pointer == '"') | |
951 | { | |
952 | int dummy; | |
953 | ||
954 | name = demand_copy_C_string (&dummy); | |
955 | if (name == NULL) | |
956 | { | |
957 | ignore_rest_of_line (); | |
958 | return NULL; | |
959 | } | |
960 | } | |
961 | else | |
962 | { | |
963 | char *end = input_line_pointer; | |
964 | ||
965 | while (0 == strchr ("\n\t,; ", *end)) | |
966 | end++; | |
967 | if (end == input_line_pointer) | |
968 | { | |
c95b35a9 | 969 | as_bad (_("missing name")); |
6ce8b369 AM |
970 | ignore_rest_of_line (); |
971 | return NULL; | |
972 | } | |
973 | ||
29a2809e | 974 | name = xmemdup0 (input_line_pointer, end - input_line_pointer); |
451133ce NP |
975 | |
976 | while (flag_sectname_subst) | |
977 | { | |
978 | char *subst = strchr (name, '%'); | |
979 | if (subst && subst[1] == 'S') | |
980 | { | |
981 | int oldlen = strlen (name); | |
982 | int substlen = strlen (now_seg->name); | |
983 | int newlen = oldlen - 2 + substlen; | |
add39d23 | 984 | char *newname = XNEWVEC (char, newlen + 1); |
451133ce NP |
985 | int headlen = subst - name; |
986 | memcpy (newname, name, headlen); | |
987 | strcpy (newname + headlen, now_seg->name); | |
988 | strcat (newname + headlen, subst + 2); | |
989 | xfree (name); | |
990 | name = newname; | |
991 | } | |
992 | else | |
993 | break; | |
994 | } | |
995 | ||
612d7b83 L |
996 | #ifdef tc_canonicalize_section_name |
997 | name = tc_canonicalize_section_name (name); | |
998 | #endif | |
6ce8b369 AM |
999 | input_line_pointer = end; |
1000 | } | |
1001 | SKIP_WHITESPACE (); | |
1002 | return name; | |
1003 | } | |
1004 | ||
9de8d8f1 | 1005 | void |
dbe2df79 | 1006 | obj_elf_section (int push) |
9de8d8f1 | 1007 | { |
82b8a785 TS |
1008 | const char *name, *group_name; |
1009 | char *beg; | |
01e1a5bc NC |
1010 | int type, dummy; |
1011 | bfd_vma attr; | |
df3a023b | 1012 | bfd_vma gnu_attr; |
f5fa8ca2 | 1013 | int entsize; |
d2dab548 | 1014 | int linkonce; |
6f932bce | 1015 | subsegT new_subsection = -1; |
a91e1603 | 1016 | unsigned int info = 0; |
9de8d8f1 | 1017 | |
252b5132 RH |
1018 | if (flag_mri) |
1019 | { | |
1020 | char mri_type; | |
1021 | ||
9de8d8f1 | 1022 | #ifdef md_flush_pending_output |
60bcf0fa | 1023 | md_flush_pending_output (); |
9de8d8f1 RH |
1024 | #endif |
1025 | ||
252b5132 RH |
1026 | previous_section = now_seg; |
1027 | previous_subsection = now_subseg; | |
1028 | ||
1029 | s_mri_sect (&mri_type); | |
1030 | ||
1031 | #ifdef md_elf_section_change_hook | |
1032 | md_elf_section_change_hook (); | |
1033 | #endif | |
1034 | ||
1035 | return; | |
1036 | } | |
1037 | ||
6ce8b369 AM |
1038 | name = obj_elf_section_name (); |
1039 | if (name == NULL) | |
1040 | return; | |
252b5132 RH |
1041 | type = SHT_NULL; |
1042 | attr = 0; | |
df3a023b | 1043 | gnu_attr = 0; |
aa1f4858 | 1044 | group_name = NULL; |
f5fa8ca2 | 1045 | entsize = 0; |
d2dab548 | 1046 | linkonce = 0; |
252b5132 RH |
1047 | |
1048 | if (*input_line_pointer == ',') | |
1049 | { | |
1050 | /* Skip the comma. */ | |
1051 | ++input_line_pointer; | |
252b5132 RH |
1052 | SKIP_WHITESPACE (); |
1053 | ||
9cfc3331 | 1054 | if (push && ISDIGIT (*input_line_pointer)) |
6f932bce | 1055 | { |
9cfc3331 | 1056 | /* .pushsection has an optional subsection. */ |
6f932bce | 1057 | new_subsection = (subsegT) get_absolute_expression (); |
9cfc3331 L |
1058 | |
1059 | SKIP_WHITESPACE (); | |
1060 | ||
1061 | /* Stop if we don't see a comma. */ | |
1062 | if (*input_line_pointer != ',') | |
1063 | goto done; | |
1064 | ||
1065 | /* Skip the comma. */ | |
1066 | ++input_line_pointer; | |
1067 | SKIP_WHITESPACE (); | |
6f932bce | 1068 | } |
9cfc3331 L |
1069 | |
1070 | if (*input_line_pointer == '"') | |
252b5132 | 1071 | { |
f6616a06 | 1072 | bfd_boolean is_clone; |
01642c12 | 1073 | |
9de8d8f1 RH |
1074 | beg = demand_copy_C_string (&dummy); |
1075 | if (beg == NULL) | |
252b5132 | 1076 | { |
9de8d8f1 RH |
1077 | ignore_rest_of_line (); |
1078 | return; | |
252b5132 | 1079 | } |
df3a023b AM |
1080 | attr |= obj_elf_parse_section_letters (beg, strlen (beg), |
1081 | &is_clone, &gnu_attr); | |
252b5132 RH |
1082 | |
1083 | SKIP_WHITESPACE (); | |
1084 | if (*input_line_pointer == ',') | |
1085 | { | |
9de8d8f1 | 1086 | char c; |
060adf0e AM |
1087 | char *save = input_line_pointer; |
1088 | ||
252b5132 RH |
1089 | ++input_line_pointer; |
1090 | SKIP_WHITESPACE (); | |
9de8d8f1 RH |
1091 | c = *input_line_pointer; |
1092 | if (c == '"') | |
252b5132 | 1093 | { |
9de8d8f1 RH |
1094 | beg = demand_copy_C_string (&dummy); |
1095 | if (beg == NULL) | |
252b5132 | 1096 | { |
9de8d8f1 RH |
1097 | ignore_rest_of_line (); |
1098 | return; | |
252b5132 | 1099 | } |
44bf2362 | 1100 | type = obj_elf_section_type (beg, strlen (beg), TRUE); |
9de8d8f1 RH |
1101 | } |
1102 | else if (c == '@' || c == '%') | |
1103 | { | |
d02603dc | 1104 | ++input_line_pointer; |
9fb71ee4 NC |
1105 | |
1106 | if (ISDIGIT (* input_line_pointer)) | |
df3a023b | 1107 | type = strtoul (input_line_pointer, &input_line_pointer, 0); |
9fb71ee4 NC |
1108 | else |
1109 | { | |
1110 | c = get_symbol_name (& beg); | |
1111 | (void) restore_line_pointer (c); | |
df3a023b AM |
1112 | type = obj_elf_section_type (beg, |
1113 | input_line_pointer - beg, | |
1114 | TRUE); | |
9fb71ee4 | 1115 | } |
252b5132 | 1116 | } |
060adf0e AM |
1117 | else |
1118 | input_line_pointer = save; | |
252b5132 | 1119 | } |
f5fa8ca2 JJ |
1120 | |
1121 | SKIP_WHITESPACE (); | |
6ce8b369 | 1122 | if ((attr & SHF_MERGE) != 0 && *input_line_pointer == ',') |
f5fa8ca2 JJ |
1123 | { |
1124 | ++input_line_pointer; | |
1125 | SKIP_WHITESPACE (); | |
1126 | entsize = get_absolute_expression (); | |
6ce8b369 | 1127 | SKIP_WHITESPACE (); |
f5fa8ca2 JJ |
1128 | if (entsize < 0) |
1129 | { | |
6ce8b369 | 1130 | as_warn (_("invalid merge entity size")); |
f5fa8ca2 JJ |
1131 | attr &= ~SHF_MERGE; |
1132 | entsize = 0; | |
1133 | } | |
1134 | } | |
6ce8b369 AM |
1135 | else if ((attr & SHF_MERGE) != 0) |
1136 | { | |
1137 | as_warn (_("entity size for SHF_MERGE not specified")); | |
1138 | attr &= ~SHF_MERGE; | |
1139 | } | |
060adf0e | 1140 | |
f6616a06 | 1141 | if ((attr & SHF_GROUP) != 0 && is_clone) |
01642c12 RM |
1142 | { |
1143 | as_warn (_("? section flag ignored with G present")); | |
f6616a06 | 1144 | is_clone = FALSE; |
01642c12 | 1145 | } |
060adf0e AM |
1146 | if ((attr & SHF_GROUP) != 0 && *input_line_pointer == ',') |
1147 | { | |
1148 | ++input_line_pointer; | |
aa1f4858 AM |
1149 | group_name = obj_elf_section_name (); |
1150 | if (group_name == NULL) | |
060adf0e | 1151 | attr &= ~SHF_GROUP; |
59365e19 | 1152 | else if (*input_line_pointer == ',') |
d2dab548 | 1153 | { |
59365e19 AM |
1154 | ++input_line_pointer; |
1155 | SKIP_WHITESPACE (); | |
1156 | if (strncmp (input_line_pointer, "comdat", 6) == 0) | |
1157 | { | |
1158 | input_line_pointer += 6; | |
1159 | linkonce = 1; | |
1160 | } | |
d2dab548 AM |
1161 | } |
1162 | else if (strncmp (name, ".gnu.linkonce", 13) == 0) | |
1163 | linkonce = 1; | |
060adf0e AM |
1164 | } |
1165 | else if ((attr & SHF_GROUP) != 0) | |
1166 | { | |
1167 | as_warn (_("group name for SHF_GROUP not specified")); | |
1168 | attr &= ~SHF_GROUP; | |
1169 | } | |
01642c12 | 1170 | |
f6616a06 | 1171 | if (is_clone) |
01642c12 RM |
1172 | { |
1173 | const char *now_group = elf_group_name (now_seg); | |
1174 | if (now_group != NULL) | |
1175 | { | |
1176 | group_name = xstrdup (now_group); | |
1177 | linkonce = (now_seg->flags & SEC_LINK_ONCE) != 0; | |
1178 | } | |
1179 | } | |
a91e1603 | 1180 | |
df3a023b | 1181 | if ((gnu_attr & SHF_GNU_MBIND) != 0 && *input_line_pointer == ',') |
a91e1603 L |
1182 | { |
1183 | ++input_line_pointer; | |
1184 | SKIP_WHITESPACE (); | |
1185 | if (ISDIGIT (* input_line_pointer)) | |
1186 | { | |
1187 | char *t = input_line_pointer; | |
1188 | info = strtoul (input_line_pointer, | |
1189 | &input_line_pointer, 0); | |
1190 | if (info == (unsigned int) -1) | |
1191 | { | |
1192 | as_warn (_("unsupported mbind section info: %s"), t); | |
1193 | info = 0; | |
1194 | } | |
1195 | } | |
1196 | } | |
252b5132 RH |
1197 | } |
1198 | else | |
1199 | { | |
1200 | do | |
1201 | { | |
9de8d8f1 RH |
1202 | char c; |
1203 | ||
252b5132 RH |
1204 | SKIP_WHITESPACE (); |
1205 | if (*input_line_pointer != '#') | |
1206 | { | |
c95b35a9 | 1207 | as_bad (_("character following name is not '#'")); |
252b5132 RH |
1208 | ignore_rest_of_line (); |
1209 | return; | |
1210 | } | |
d02603dc NC |
1211 | ++input_line_pointer; |
1212 | c = get_symbol_name (& beg); | |
1213 | (void) restore_line_pointer (c); | |
9de8d8f1 | 1214 | |
df3a023b AM |
1215 | attr |= obj_elf_section_word (beg, input_line_pointer - beg, |
1216 | &type); | |
9de8d8f1 | 1217 | |
252b5132 RH |
1218 | SKIP_WHITESPACE (); |
1219 | } | |
1220 | while (*input_line_pointer++ == ','); | |
1221 | --input_line_pointer; | |
1222 | } | |
1223 | } | |
1224 | ||
9cfc3331 | 1225 | done: |
252b5132 | 1226 | demand_empty_rest_of_line (); |
9de8d8f1 | 1227 | |
a91e1603 L |
1228 | obj_elf_change_section (name, type, info, attr, entsize, group_name, |
1229 | linkonce, push); | |
6f932bce | 1230 | |
df3a023b AM |
1231 | if ((gnu_attr & SHF_GNU_MBIND) != 0) |
1232 | { | |
1233 | struct elf_backend_data *bed; | |
1234 | ||
1235 | if ((attr & SHF_ALLOC) == 0) | |
1236 | as_bad (_("SHF_ALLOC isn't set for GNU_MBIND section: %s"), name); | |
1237 | ||
1238 | bed = (struct elf_backend_data *) get_elf_backend_data (stdoutput); | |
1239 | if (bed->elf_osabi == ELFOSABI_NONE) | |
1240 | bed->elf_osabi = ELFOSABI_GNU; | |
1241 | else if (bed->elf_osabi != ELFOSABI_GNU | |
1242 | && bed->elf_osabi != ELFOSABI_FREEBSD) | |
1243 | as_bad (_("GNU_MBIND section is supported only by GNU " | |
1244 | "and FreeBSD targets")); | |
1245 | } | |
1246 | elf_section_flags (now_seg) |= gnu_attr; | |
1247 | ||
6f932bce NC |
1248 | if (push && new_subsection != -1) |
1249 | subseg_set (now_seg, new_subsection); | |
252b5132 RH |
1250 | } |
1251 | ||
1252 | /* Change to the .data section. */ | |
1253 | ||
16b93d88 | 1254 | void |
dbe2df79 | 1255 | obj_elf_data (int i) |
252b5132 RH |
1256 | { |
1257 | #ifdef md_flush_pending_output | |
1258 | md_flush_pending_output (); | |
1259 | #endif | |
1260 | ||
1261 | previous_section = now_seg; | |
1262 | previous_subsection = now_subseg; | |
1263 | s_data (i); | |
1264 | ||
1265 | #ifdef md_elf_section_change_hook | |
1266 | md_elf_section_change_hook (); | |
1267 | #endif | |
1268 | } | |
1269 | ||
1270 | /* Change to the .text section. */ | |
1271 | ||
16b93d88 | 1272 | void |
dbe2df79 | 1273 | obj_elf_text (int i) |
252b5132 RH |
1274 | { |
1275 | #ifdef md_flush_pending_output | |
1276 | md_flush_pending_output (); | |
1277 | #endif | |
1278 | ||
1279 | previous_section = now_seg; | |
1280 | previous_subsection = now_subseg; | |
1281 | s_text (i); | |
1282 | ||
1283 | #ifdef md_elf_section_change_hook | |
1284 | md_elf_section_change_hook (); | |
1285 | #endif | |
1286 | } | |
1287 | ||
8fe53b44 JB |
1288 | /* Change to the *ABS* section. */ |
1289 | ||
1290 | void | |
1291 | obj_elf_struct (int i) | |
1292 | { | |
1293 | #ifdef md_flush_pending_output | |
1294 | md_flush_pending_output (); | |
1295 | #endif | |
1296 | ||
1297 | previous_section = now_seg; | |
1298 | previous_subsection = now_subseg; | |
1299 | s_struct (i); | |
1300 | ||
1301 | #ifdef md_elf_section_change_hook | |
1302 | md_elf_section_change_hook (); | |
1303 | #endif | |
1304 | } | |
1305 | ||
252b5132 | 1306 | static void |
dbe2df79 | 1307 | obj_elf_subsection (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1308 | { |
6f932bce | 1309 | int temp; |
252b5132 RH |
1310 | |
1311 | #ifdef md_flush_pending_output | |
1312 | md_flush_pending_output (); | |
1313 | #endif | |
1314 | ||
1315 | previous_section = now_seg; | |
1316 | previous_subsection = now_subseg; | |
1317 | ||
1318 | temp = get_absolute_expression (); | |
1319 | subseg_set (now_seg, (subsegT) temp); | |
1320 | demand_empty_rest_of_line (); | |
1321 | ||
1322 | #ifdef md_elf_section_change_hook | |
1323 | md_elf_section_change_hook (); | |
1324 | #endif | |
1325 | } | |
1326 | ||
1327 | /* This can be called from the processor backends if they change | |
1328 | sections. */ | |
1329 | ||
1330 | void | |
dbe2df79 | 1331 | obj_elf_section_change_hook (void) |
252b5132 RH |
1332 | { |
1333 | previous_section = now_seg; | |
1334 | previous_subsection = now_subseg; | |
1335 | } | |
1336 | ||
1337 | void | |
dbe2df79 | 1338 | obj_elf_previous (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1339 | { |
9de8d8f1 RH |
1340 | segT new_section; |
1341 | int new_subsection; | |
1342 | ||
252b5132 RH |
1343 | if (previous_section == 0) |
1344 | { | |
6ce8b369 | 1345 | as_warn (_(".previous without corresponding .section; ignored")); |
252b5132 RH |
1346 | return; |
1347 | } | |
1348 | ||
1349 | #ifdef md_flush_pending_output | |
1350 | md_flush_pending_output (); | |
1351 | #endif | |
1352 | ||
9de8d8f1 RH |
1353 | new_section = previous_section; |
1354 | new_subsection = previous_subsection; | |
1355 | previous_section = now_seg; | |
1356 | previous_subsection = now_subseg; | |
1357 | subseg_set (new_section, new_subsection); | |
1358 | ||
1359 | #ifdef md_elf_section_change_hook | |
1360 | md_elf_section_change_hook (); | |
1361 | #endif | |
1362 | } | |
1363 | ||
1364 | static void | |
dbe2df79 | 1365 | obj_elf_popsection (int xxx ATTRIBUTE_UNUSED) |
9de8d8f1 RH |
1366 | { |
1367 | struct section_stack *top = section_stack; | |
1368 | ||
1369 | if (top == NULL) | |
1370 | { | |
6ce8b369 | 1371 | as_warn (_(".popsection without corresponding .pushsection; ignored")); |
9de8d8f1 RH |
1372 | return; |
1373 | } | |
1374 | ||
1375 | #ifdef md_flush_pending_output | |
1376 | md_flush_pending_output (); | |
1377 | #endif | |
1378 | ||
1379 | section_stack = top->next; | |
1380 | previous_section = top->prev_seg; | |
1381 | previous_subsection = top->prev_subseg; | |
1382 | subseg_set (top->seg, top->subseg); | |
1383 | free (top); | |
252b5132 RH |
1384 | |
1385 | #ifdef md_elf_section_change_hook | |
1386 | md_elf_section_change_hook (); | |
1387 | #endif | |
1388 | } | |
1389 | ||
1390 | static void | |
dbe2df79 | 1391 | obj_elf_line (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1392 | { |
1393 | /* Assume delimiter is part of expression. BSD4.2 as fails with | |
bf514e21 | 1394 | delightful bug, so we are not being incompatible here. */ |
dbe2df79 | 1395 | new_logical_line (NULL, get_absolute_expression ()); |
252b5132 RH |
1396 | demand_empty_rest_of_line (); |
1397 | } | |
1398 | ||
1399 | /* This handles the .symver pseudo-op, which is used to specify a | |
1400 | symbol version. The syntax is ``.symver NAME,SYMVERNAME''. | |
1401 | SYMVERNAME may contain ELF_VER_CHR ('@') characters. This | |
1402 | pseudo-op causes the assembler to emit a symbol named SYMVERNAME | |
1403 | with the same value as the symbol NAME. */ | |
1404 | ||
1405 | static void | |
dbe2df79 | 1406 | obj_elf_symver (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1407 | { |
1408 | char *name; | |
1409 | char c; | |
468cced8 | 1410 | char old_lexat; |
252b5132 RH |
1411 | symbolS *sym; |
1412 | ||
6e8bd58f | 1413 | sym = get_sym_from_input_line_and_check (); |
252b5132 | 1414 | |
252b5132 RH |
1415 | if (*input_line_pointer != ',') |
1416 | { | |
1417 | as_bad (_("expected comma after name in .symver")); | |
1418 | ignore_rest_of_line (); | |
1419 | return; | |
1420 | } | |
1421 | ||
1422 | ++input_line_pointer; | |
eba874d8 | 1423 | SKIP_WHITESPACE (); |
468cced8 AM |
1424 | |
1425 | /* Temporarily include '@' in symbol names. */ | |
1426 | old_lexat = lex_type[(unsigned char) '@']; | |
1427 | lex_type[(unsigned char) '@'] |= LEX_NAME; | |
d02603dc | 1428 | c = get_symbol_name (& name); |
468cced8 | 1429 | lex_type[(unsigned char) '@'] = old_lexat; |
252b5132 | 1430 | |
a3aea05a L |
1431 | if (S_IS_COMMON (sym)) |
1432 | { | |
1433 | as_bad (_("`%s' can't be versioned to common symbol '%s'"), | |
1434 | name, S_GET_NAME (sym)); | |
1435 | ignore_rest_of_line (); | |
1436 | return; | |
1437 | } | |
1438 | ||
339681c0 L |
1439 | if (symbol_get_obj (sym)->versioned_name == NULL) |
1440 | { | |
1441 | symbol_get_obj (sym)->versioned_name = xstrdup (name); | |
252b5132 | 1442 | |
d02603dc | 1443 | (void) restore_line_pointer (c); |
252b5132 | 1444 | |
6f620856 L |
1445 | if (strchr (symbol_get_obj (sym)->versioned_name, |
1446 | ELF_VER_CHR) == NULL) | |
339681c0 L |
1447 | { |
1448 | as_bad (_("missing version name in `%s' for symbol `%s'"), | |
1449 | symbol_get_obj (sym)->versioned_name, | |
1450 | S_GET_NAME (sym)); | |
1451 | ignore_rest_of_line (); | |
1452 | return; | |
1453 | } | |
1454 | } | |
1455 | else | |
252b5132 | 1456 | { |
339681c0 L |
1457 | if (strcmp (symbol_get_obj (sym)->versioned_name, name)) |
1458 | { | |
1459 | as_bad (_("multiple versions [`%s'|`%s'] for symbol `%s'"), | |
1460 | name, symbol_get_obj (sym)->versioned_name, | |
1461 | S_GET_NAME (sym)); | |
1462 | ignore_rest_of_line (); | |
1463 | return; | |
1464 | } | |
1465 | ||
d02603dc | 1466 | (void) restore_line_pointer (c); |
252b5132 RH |
1467 | } |
1468 | ||
1469 | demand_empty_rest_of_line (); | |
1470 | } | |
1471 | ||
1472 | /* This handles the .vtable_inherit pseudo-op, which is used to indicate | |
1473 | to the linker the hierarchy in which a particular table resides. The | |
1474 | syntax is ".vtable_inherit CHILDNAME, PARENTNAME". */ | |
1475 | ||
904a31bf | 1476 | struct fix * |
68d20676 | 1477 | obj_elf_get_vtable_inherit (void) |
252b5132 RH |
1478 | { |
1479 | char *cname, *pname; | |
1480 | symbolS *csym, *psym; | |
1481 | char c, bad = 0; | |
1482 | ||
1483 | if (*input_line_pointer == '#') | |
1484 | ++input_line_pointer; | |
1485 | ||
d02603dc | 1486 | c = get_symbol_name (& cname); |
252b5132 RH |
1487 | csym = symbol_find (cname); |
1488 | ||
1489 | /* GCFIXME: should check that we don't have two .vtable_inherits for | |
1490 | the same child symbol. Also, we can currently only do this if the | |
1491 | child symbol is already exists and is placed in a fragment. */ | |
1492 | ||
49309057 | 1493 | if (csym == NULL || symbol_get_frag (csym) == NULL) |
252b5132 | 1494 | { |
bd3ba5d1 | 1495 | as_bad (_("expected `%s' to have already been set for .vtable_inherit"), |
252b5132 RH |
1496 | cname); |
1497 | bad = 1; | |
1498 | } | |
1499 | ||
1500 | *input_line_pointer = c; | |
1501 | ||
d02603dc | 1502 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
1503 | if (*input_line_pointer != ',') |
1504 | { | |
bd3ba5d1 | 1505 | as_bad (_("expected comma after name in .vtable_inherit")); |
252b5132 | 1506 | ignore_rest_of_line (); |
904a31bf | 1507 | return NULL; |
252b5132 RH |
1508 | } |
1509 | ||
1510 | ++input_line_pointer; | |
1511 | SKIP_WHITESPACE (); | |
1512 | ||
1513 | if (*input_line_pointer == '#') | |
1514 | ++input_line_pointer; | |
1515 | ||
1516 | if (input_line_pointer[0] == '0' | |
1517 | && (input_line_pointer[1] == '\0' | |
3882b010 | 1518 | || ISSPACE (input_line_pointer[1]))) |
252b5132 RH |
1519 | { |
1520 | psym = section_symbol (absolute_section); | |
1521 | ++input_line_pointer; | |
1522 | } | |
1523 | else | |
1524 | { | |
d02603dc | 1525 | c = get_symbol_name (& pname); |
252b5132 | 1526 | psym = symbol_find_or_make (pname); |
d02603dc | 1527 | restore_line_pointer (c); |
252b5132 RH |
1528 | } |
1529 | ||
1530 | demand_empty_rest_of_line (); | |
1531 | ||
1532 | if (bad) | |
904a31bf | 1533 | return NULL; |
252b5132 | 1534 | |
9c2799c2 | 1535 | gas_assert (symbol_get_value_expression (csym)->X_op == O_constant); |
904a31bf AM |
1536 | return fix_new (symbol_get_frag (csym), |
1537 | symbol_get_value_expression (csym)->X_add_number, | |
1538 | 0, psym, 0, 0, BFD_RELOC_VTABLE_INHERIT); | |
252b5132 | 1539 | } |
fa306131 | 1540 | |
68d20676 NC |
1541 | /* This is a version of obj_elf_get_vtable_inherit() that is |
1542 | suitable for use in struct _pseudo_type tables. */ | |
1543 | ||
1544 | void | |
1545 | obj_elf_vtable_inherit (int ignore ATTRIBUTE_UNUSED) | |
1546 | { | |
1547 | (void) obj_elf_get_vtable_inherit (); | |
1548 | } | |
1549 | ||
252b5132 RH |
1550 | /* This handles the .vtable_entry pseudo-op, which is used to indicate |
1551 | to the linker that a vtable slot was used. The syntax is | |
1552 | ".vtable_entry tablename, offset". */ | |
1553 | ||
904a31bf | 1554 | struct fix * |
68d20676 | 1555 | obj_elf_get_vtable_entry (void) |
252b5132 | 1556 | { |
252b5132 RH |
1557 | symbolS *sym; |
1558 | offsetT offset; | |
252b5132 RH |
1559 | |
1560 | if (*input_line_pointer == '#') | |
1561 | ++input_line_pointer; | |
1562 | ||
6e8bd58f | 1563 | sym = get_sym_from_input_line_and_check (); |
252b5132 RH |
1564 | if (*input_line_pointer != ',') |
1565 | { | |
bd3ba5d1 | 1566 | as_bad (_("expected comma after name in .vtable_entry")); |
252b5132 | 1567 | ignore_rest_of_line (); |
904a31bf | 1568 | return NULL; |
252b5132 RH |
1569 | } |
1570 | ||
1571 | ++input_line_pointer; | |
1572 | if (*input_line_pointer == '#') | |
1573 | ++input_line_pointer; | |
1574 | ||
1575 | offset = get_absolute_expression (); | |
1576 | ||
252b5132 | 1577 | demand_empty_rest_of_line (); |
904a31bf AM |
1578 | |
1579 | return fix_new (frag_now, frag_now_fix (), 0, sym, offset, 0, | |
1580 | BFD_RELOC_VTABLE_ENTRY); | |
252b5132 RH |
1581 | } |
1582 | ||
68d20676 NC |
1583 | /* This is a version of obj_elf_get_vtable_entry() that is |
1584 | suitable for use in struct _pseudo_type tables. */ | |
1585 | ||
1586 | void | |
1587 | obj_elf_vtable_entry (int ignore ATTRIBUTE_UNUSED) | |
1588 | { | |
1589 | (void) obj_elf_get_vtable_entry (); | |
1590 | } | |
1591 | ||
0420f52b MR |
1592 | #define skip_whitespace(str) do { if (*(str) == ' ') ++(str); } while (0) |
1593 | ||
1594 | static inline int | |
1595 | skip_past_char (char ** str, char c) | |
1596 | { | |
1597 | if (**str == c) | |
1598 | { | |
1599 | (*str)++; | |
1600 | return 0; | |
1601 | } | |
1602 | else | |
1603 | return -1; | |
1604 | } | |
1605 | #define skip_past_comma(str) skip_past_char (str, ',') | |
1606 | ||
9440a904 RS |
1607 | /* A list of attributes that have been explicitly set by the assembly code. |
1608 | VENDOR is the vendor id, BASE is the tag shifted right by the number | |
1609 | of bits in MASK, and bit N of MASK is set if tag BASE+N has been set. */ | |
1610 | struct recorded_attribute_info { | |
1611 | struct recorded_attribute_info *next; | |
1612 | int vendor; | |
1613 | unsigned int base; | |
1614 | unsigned long mask; | |
1615 | }; | |
1616 | static struct recorded_attribute_info *recorded_attributes; | |
1617 | ||
1618 | /* Record that we have seen an explicit specification of attribute TAG | |
1619 | for vendor VENDOR. */ | |
1620 | ||
1621 | static void | |
1622 | record_attribute (int vendor, unsigned int tag) | |
1623 | { | |
1624 | unsigned int base; | |
1625 | unsigned long mask; | |
1626 | struct recorded_attribute_info *rai; | |
1627 | ||
1628 | base = tag / (8 * sizeof (rai->mask)); | |
1629 | mask = 1UL << (tag % (8 * sizeof (rai->mask))); | |
1630 | for (rai = recorded_attributes; rai; rai = rai->next) | |
1631 | if (rai->vendor == vendor && rai->base == base) | |
1632 | { | |
1633 | rai->mask |= mask; | |
1634 | return; | |
1635 | } | |
1636 | ||
1637 | rai = XNEW (struct recorded_attribute_info); | |
1638 | rai->next = recorded_attributes; | |
1639 | rai->vendor = vendor; | |
1640 | rai->base = base; | |
1641 | rai->mask = mask; | |
1642 | recorded_attributes = rai; | |
1643 | } | |
1644 | ||
1645 | /* Return true if we have seen an explicit specification of attribute TAG | |
1646 | for vendor VENDOR. */ | |
1647 | ||
1648 | bfd_boolean | |
1649 | obj_elf_seen_attribute (int vendor, unsigned int tag) | |
1650 | { | |
1651 | unsigned int base; | |
1652 | unsigned long mask; | |
1653 | struct recorded_attribute_info *rai; | |
1654 | ||
1655 | base = tag / (8 * sizeof (rai->mask)); | |
1656 | mask = 1UL << (tag % (8 * sizeof (rai->mask))); | |
1657 | for (rai = recorded_attributes; rai; rai = rai->next) | |
1658 | if (rai->vendor == vendor && rai->base == base) | |
1659 | return (rai->mask & mask) != 0; | |
1660 | return FALSE; | |
1661 | } | |
1662 | ||
0420f52b MR |
1663 | /* Parse an attribute directive for VENDOR. |
1664 | Returns the attribute number read, or zero on error. */ | |
1665 | ||
1666 | int | |
1667 | obj_elf_vendor_attribute (int vendor) | |
1668 | { | |
1669 | expressionS exp; | |
1670 | int type; | |
1671 | int tag; | |
1672 | unsigned int i = 0; | |
1673 | char *s = NULL; | |
1674 | ||
1675 | /* Read the first number or name. */ | |
1676 | skip_whitespace (input_line_pointer); | |
1677 | s = input_line_pointer; | |
1678 | if (ISDIGIT (*input_line_pointer)) | |
1679 | { | |
1680 | expression (& exp); | |
1681 | if (exp.X_op != O_constant) | |
1682 | goto bad; | |
1683 | tag = exp.X_add_number; | |
1684 | } | |
1685 | else | |
1686 | { | |
1687 | char *name; | |
1688 | ||
1689 | /* A name may contain '_', but no other punctuation. */ | |
1690 | for (; ISALNUM (*input_line_pointer) || *input_line_pointer == '_'; | |
1691 | ++input_line_pointer) | |
1692 | i++; | |
1693 | if (i == 0) | |
1694 | goto bad; | |
1695 | ||
a44e2901 | 1696 | name = xstrndup (s, i); |
0420f52b MR |
1697 | |
1698 | #ifndef CONVERT_SYMBOLIC_ATTRIBUTE | |
1699 | #define CONVERT_SYMBOLIC_ATTRIBUTE(a) -1 | |
1700 | #endif | |
1701 | ||
1702 | tag = CONVERT_SYMBOLIC_ATTRIBUTE (name); | |
1703 | if (tag == -1) | |
1704 | { | |
1705 | as_bad (_("Attribute name not recognised: %s"), name); | |
1706 | ignore_rest_of_line (); | |
e1fa0163 | 1707 | free (name); |
0420f52b MR |
1708 | return 0; |
1709 | } | |
e1fa0163 | 1710 | free (name); |
0420f52b MR |
1711 | } |
1712 | ||
1713 | type = _bfd_elf_obj_attrs_arg_type (stdoutput, vendor, tag); | |
1714 | ||
1715 | if (skip_past_comma (&input_line_pointer) == -1) | |
1716 | goto bad; | |
1717 | if (type & 1) | |
1718 | { | |
1719 | expression (& exp); | |
1720 | if (exp.X_op != O_constant) | |
1721 | { | |
1722 | as_bad (_("expected numeric constant")); | |
1723 | ignore_rest_of_line (); | |
1724 | return 0; | |
1725 | } | |
1726 | i = exp.X_add_number; | |
1727 | } | |
1728 | if ((type & 3) == 3 | |
1729 | && skip_past_comma (&input_line_pointer) == -1) | |
1730 | { | |
1731 | as_bad (_("expected comma")); | |
1732 | ignore_rest_of_line (); | |
1733 | return 0; | |
1734 | } | |
1735 | if (type & 2) | |
1736 | { | |
1737 | int len; | |
1738 | ||
1739 | skip_whitespace (input_line_pointer); | |
1740 | if (*input_line_pointer != '"') | |
1741 | goto bad_string; | |
1742 | s = demand_copy_C_string (&len); | |
1743 | } | |
1744 | ||
9440a904 | 1745 | record_attribute (vendor, tag); |
0420f52b MR |
1746 | switch (type & 3) |
1747 | { | |
1748 | case 3: | |
1749 | bfd_elf_add_obj_attr_int_string (stdoutput, vendor, tag, i, s); | |
1750 | break; | |
1751 | case 2: | |
1752 | bfd_elf_add_obj_attr_string (stdoutput, vendor, tag, s); | |
1753 | break; | |
1754 | case 1: | |
1755 | bfd_elf_add_obj_attr_int (stdoutput, vendor, tag, i); | |
1756 | break; | |
1757 | default: | |
1758 | abort (); | |
1759 | } | |
1760 | ||
1761 | demand_empty_rest_of_line (); | |
1762 | return tag; | |
1763 | bad_string: | |
1764 | as_bad (_("bad string constant")); | |
1765 | ignore_rest_of_line (); | |
1766 | return 0; | |
1767 | bad: | |
1768 | as_bad (_("expected <tag> , <value>")); | |
1769 | ignore_rest_of_line (); | |
1770 | return 0; | |
1771 | } | |
1772 | ||
1773 | /* Parse a .gnu_attribute directive. */ | |
1774 | ||
1775 | static void | |
1776 | obj_elf_gnu_attribute (int ignored ATTRIBUTE_UNUSED) | |
1777 | { | |
1778 | obj_elf_vendor_attribute (OBJ_ATTR_GNU); | |
1779 | } | |
1780 | ||
252b5132 | 1781 | void |
dbe2df79 | 1782 | elf_obj_read_begin_hook (void) |
252b5132 RH |
1783 | { |
1784 | #ifdef NEED_ECOFF_DEBUG | |
1785 | if (ECOFF_DEBUGGING) | |
1786 | ecoff_read_begin_hook (); | |
1787 | #endif | |
1788 | } | |
1789 | ||
1790 | void | |
dbe2df79 | 1791 | elf_obj_symbol_new_hook (symbolS *symbolP) |
252b5132 | 1792 | { |
49309057 ILT |
1793 | struct elf_obj_sy *sy_obj; |
1794 | ||
1795 | sy_obj = symbol_get_obj (symbolP); | |
1796 | sy_obj->size = NULL; | |
1797 | sy_obj->versioned_name = NULL; | |
252b5132 RH |
1798 | |
1799 | #ifdef NEED_ECOFF_DEBUG | |
1800 | if (ECOFF_DEBUGGING) | |
1801 | ecoff_symbol_new_hook (symbolP); | |
1802 | #endif | |
1803 | } | |
1804 | ||
8fd3e36b AM |
1805 | /* When setting one symbol equal to another, by default we probably |
1806 | want them to have the same "size", whatever it means in the current | |
1807 | context. */ | |
1808 | ||
1809 | void | |
dbe2df79 | 1810 | elf_copy_symbol_attributes (symbolS *dest, symbolS *src) |
8fd3e36b | 1811 | { |
060adf0e AM |
1812 | struct elf_obj_sy *srcelf = symbol_get_obj (src); |
1813 | struct elf_obj_sy *destelf = symbol_get_obj (dest); | |
1814 | if (srcelf->size) | |
1815 | { | |
1816 | if (destelf->size == NULL) | |
325801bd | 1817 | destelf->size = XNEW (expressionS); |
060adf0e AM |
1818 | *destelf->size = *srcelf->size; |
1819 | } | |
1820 | else | |
1821 | { | |
1822 | if (destelf->size != NULL) | |
1823 | free (destelf->size); | |
1824 | destelf->size = NULL; | |
1825 | } | |
1826 | S_SET_SIZE (dest, S_GET_SIZE (src)); | |
26eb4093 JJ |
1827 | /* Don't copy visibility. */ |
1828 | S_SET_OTHER (dest, (ELF_ST_VISIBILITY (S_GET_OTHER (dest)) | |
1829 | | (S_GET_OTHER (src) & ~ELF_ST_VISIBILITY (-1)))); | |
8fd3e36b AM |
1830 | } |
1831 | ||
252b5132 | 1832 | void |
dbe2df79 | 1833 | obj_elf_version (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1834 | { |
1835 | char *name; | |
1836 | unsigned int c; | |
252b5132 RH |
1837 | char *p; |
1838 | asection *seg = now_seg; | |
1839 | subsegT subseg = now_subseg; | |
1840 | Elf_Internal_Note i_note; | |
1841 | Elf_External_Note e_note; | |
dbe2df79 | 1842 | asection *note_secp = NULL; |
252b5132 RH |
1843 | |
1844 | SKIP_WHITESPACE (); | |
1845 | if (*input_line_pointer == '\"') | |
1846 | { | |
6afdfa61 NC |
1847 | unsigned int len; |
1848 | ||
bf514e21 | 1849 | ++input_line_pointer; /* -> 1st char of string. */ |
252b5132 RH |
1850 | name = input_line_pointer; |
1851 | ||
1852 | while (is_a_char (c = next_char_of_string ())) | |
1853 | ; | |
1854 | c = *input_line_pointer; | |
1855 | *input_line_pointer = '\0'; | |
1856 | *(input_line_pointer - 1) = '\0'; | |
1857 | *input_line_pointer = c; | |
1858 | ||
6afdfa61 | 1859 | /* Create the .note section. */ |
252b5132 RH |
1860 | note_secp = subseg_new (".note", 0); |
1861 | bfd_set_section_flags (stdoutput, | |
1862 | note_secp, | |
1863 | SEC_HAS_CONTENTS | SEC_READONLY); | |
ed9c7ee0 | 1864 | record_alignment (note_secp, 2); |
252b5132 | 1865 | |
6afdfa61 NC |
1866 | /* Process the version string. */ |
1867 | len = strlen (name) + 1; | |
252b5132 | 1868 | |
6afdfa61 NC |
1869 | /* PR 3456: Although the name field is padded out to an 4-byte |
1870 | boundary, the namesz field should not be adjusted. */ | |
1871 | i_note.namesz = len; | |
1872 | i_note.descsz = 0; /* No description. */ | |
252b5132 RH |
1873 | i_note.type = NT_VERSION; |
1874 | p = frag_more (sizeof (e_note.namesz)); | |
dbe2df79 | 1875 | md_number_to_chars (p, i_note.namesz, sizeof (e_note.namesz)); |
252b5132 | 1876 | p = frag_more (sizeof (e_note.descsz)); |
dbe2df79 | 1877 | md_number_to_chars (p, i_note.descsz, sizeof (e_note.descsz)); |
252b5132 | 1878 | p = frag_more (sizeof (e_note.type)); |
dbe2df79 | 1879 | md_number_to_chars (p, i_note.type, sizeof (e_note.type)); |
6afdfa61 | 1880 | p = frag_more (len); |
5ab504f9 | 1881 | memcpy (p, name, len); |
252b5132 | 1882 | |
252b5132 RH |
1883 | frag_align (2, 0, 0); |
1884 | ||
1885 | subseg_set (seg, subseg); | |
1886 | } | |
1887 | else | |
6afdfa61 NC |
1888 | as_bad (_("expected quoted string")); |
1889 | ||
252b5132 RH |
1890 | demand_empty_rest_of_line (); |
1891 | } | |
1892 | ||
1893 | static void | |
dbe2df79 | 1894 | obj_elf_size (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1895 | { |
d02603dc NC |
1896 | char *name; |
1897 | char c = get_symbol_name (&name); | |
252b5132 RH |
1898 | char *p; |
1899 | expressionS exp; | |
1900 | symbolS *sym; | |
1901 | ||
1902 | p = input_line_pointer; | |
1903 | *p = c; | |
d02603dc | 1904 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
1905 | if (*input_line_pointer != ',') |
1906 | { | |
1907 | *p = 0; | |
1908 | as_bad (_("expected comma after name `%s' in .size directive"), name); | |
1909 | *p = c; | |
1910 | ignore_rest_of_line (); | |
1911 | return; | |
1912 | } | |
1913 | input_line_pointer++; | |
1914 | expression (&exp); | |
1915 | if (exp.X_op == O_absent) | |
1916 | { | |
1917 | as_bad (_("missing expression in .size directive")); | |
1918 | exp.X_op = O_constant; | |
1919 | exp.X_add_number = 0; | |
1920 | } | |
1921 | *p = 0; | |
1922 | sym = symbol_find_or_make (name); | |
1923 | *p = c; | |
1924 | if (exp.X_op == O_constant) | |
c538998c JJ |
1925 | { |
1926 | S_SET_SIZE (sym, exp.X_add_number); | |
1927 | if (symbol_get_obj (sym)->size) | |
1928 | { | |
1929 | xfree (symbol_get_obj (sym)->size); | |
1930 | symbol_get_obj (sym)->size = NULL; | |
1931 | } | |
1932 | } | |
252b5132 RH |
1933 | else |
1934 | { | |
325801bd | 1935 | symbol_get_obj (sym)->size = XNEW (expressionS); |
49309057 | 1936 | *symbol_get_obj (sym)->size = exp; |
252b5132 RH |
1937 | } |
1938 | demand_empty_rest_of_line (); | |
1939 | } | |
1940 | ||
1941 | /* Handle the ELF .type pseudo-op. This sets the type of a symbol. | |
44bf2362 | 1942 | There are six syntaxes: |
fa306131 | 1943 | |
252b5132 RH |
1944 | The first (used on Solaris) is |
1945 | .type SYM,#function | |
1946 | The second (used on UnixWare) is | |
1947 | .type SYM,@function | |
1948 | The third (reportedly to be used on Irix 6.0) is | |
1949 | .type SYM STT_FUNC | |
1950 | The fourth (used on NetBSD/Arm and Linux/ARM) is | |
1951 | .type SYM,%function | |
aa8c34c3 JE |
1952 | The fifth (used on SVR4/860) is |
1953 | .type SYM,"function" | |
44bf2362 NC |
1954 | The sixth (emitted by recent SunPRO under Solaris) is |
1955 | .type SYM,[0-9] | |
1956 | where the integer is the STT_* value. | |
252b5132 RH |
1957 | */ |
1958 | ||
44bf2362 NC |
1959 | static char * |
1960 | obj_elf_type_name (char *cp) | |
1961 | { | |
1962 | char *p; | |
1963 | ||
1964 | p = input_line_pointer; | |
1965 | if (*input_line_pointer >= '0' | |
1966 | && *input_line_pointer <= '9') | |
1967 | { | |
1968 | while (*input_line_pointer >= '0' | |
1969 | && *input_line_pointer <= '9') | |
1970 | ++input_line_pointer; | |
1971 | *cp = *input_line_pointer; | |
1972 | *input_line_pointer = '\0'; | |
1973 | } | |
1974 | else | |
d02603dc | 1975 | *cp = get_symbol_name (&p); |
44bf2362 NC |
1976 | |
1977 | return p; | |
1978 | } | |
1979 | ||
252b5132 | 1980 | static void |
dbe2df79 | 1981 | obj_elf_type (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1982 | { |
252b5132 RH |
1983 | char c; |
1984 | int type; | |
1e9cc1c2 | 1985 | const char *type_name; |
252b5132 | 1986 | symbolS *sym; |
904a31bf | 1987 | elf_symbol_type *elfsym; |
252b5132 | 1988 | |
6e8bd58f NS |
1989 | sym = get_sym_from_input_line_and_check (); |
1990 | c = *input_line_pointer; | |
904a31bf | 1991 | elfsym = (elf_symbol_type *) symbol_get_bfdsym (sym); |
252b5132 | 1992 | |
252b5132 RH |
1993 | if (*input_line_pointer == ',') |
1994 | ++input_line_pointer; | |
1995 | ||
1996 | SKIP_WHITESPACE (); | |
1997 | if ( *input_line_pointer == '#' | |
1998 | || *input_line_pointer == '@' | |
aa8c34c3 | 1999 | || *input_line_pointer == '"' |
252b5132 RH |
2000 | || *input_line_pointer == '%') |
2001 | ++input_line_pointer; | |
2002 | ||
1e9cc1c2 | 2003 | type_name = obj_elf_type_name (& c); |
252b5132 RH |
2004 | |
2005 | type = 0; | |
1e9cc1c2 NC |
2006 | if (strcmp (type_name, "function") == 0 |
2007 | || strcmp (type_name, "2") == 0 | |
2008 | || strcmp (type_name, "STT_FUNC") == 0) | |
252b5132 | 2009 | type = BSF_FUNCTION; |
1e9cc1c2 NC |
2010 | else if (strcmp (type_name, "object") == 0 |
2011 | || strcmp (type_name, "1") == 0 | |
2012 | || strcmp (type_name, "STT_OBJECT") == 0) | |
252b5132 | 2013 | type = BSF_OBJECT; |
1e9cc1c2 NC |
2014 | else if (strcmp (type_name, "tls_object") == 0 |
2015 | || strcmp (type_name, "6") == 0 | |
2016 | || strcmp (type_name, "STT_TLS") == 0) | |
b9734f35 | 2017 | type = BSF_OBJECT | BSF_THREAD_LOCAL; |
1e9cc1c2 NC |
2018 | else if (strcmp (type_name, "notype") == 0 |
2019 | || strcmp (type_name, "0") == 0 | |
2020 | || strcmp (type_name, "STT_NOTYPE") == 0) | |
e7b9a8c1 | 2021 | ; |
1e9cc1c2 NC |
2022 | else if (strcmp (type_name, "common") == 0 |
2023 | || strcmp (type_name, "5") == 0 | |
2024 | || strcmp (type_name, "STT_COMMON") == 0) | |
504b7d20 NC |
2025 | { |
2026 | type = BSF_OBJECT; | |
2027 | ||
2028 | if (! S_IS_COMMON (sym)) | |
2029 | { | |
2030 | if (S_IS_VOLATILE (sym)) | |
2031 | { | |
2032 | sym = symbol_clone (sym, 1); | |
2033 | S_SET_SEGMENT (sym, bfd_com_section_ptr); | |
2034 | S_SET_VALUE (sym, 0); | |
2035 | S_SET_EXTERNAL (sym); | |
2036 | symbol_set_frag (sym, &zero_address_frag); | |
2037 | S_CLEAR_VOLATILE (sym); | |
2038 | } | |
2039 | else if (S_IS_DEFINED (sym) || symbol_equated_p (sym)) | |
2040 | as_bad (_("symbol '%s' is already defined"), S_GET_NAME (sym)); | |
2041 | else | |
2042 | { | |
2043 | /* FIXME: Is it safe to just change the section ? */ | |
2044 | S_SET_SEGMENT (sym, bfd_com_section_ptr); | |
2045 | S_SET_VALUE (sym, 0); | |
2046 | S_SET_EXTERNAL (sym); | |
2047 | } | |
2048 | } | |
2049 | } | |
1e9cc1c2 NC |
2050 | else if (strcmp (type_name, "gnu_indirect_function") == 0 |
2051 | || strcmp (type_name, "10") == 0 | |
2052 | || strcmp (type_name, "STT_GNU_IFUNC") == 0) | |
d8045f23 | 2053 | { |
df3a023b AM |
2054 | struct elf_backend_data *bed; |
2055 | ||
2056 | bed = (struct elf_backend_data *) get_elf_backend_data (stdoutput); | |
2057 | if (bed->elf_osabi == ELFOSABI_NONE) | |
2058 | bed->elf_osabi = ELFOSABI_GNU; | |
2059 | else if (bed->elf_osabi != ELFOSABI_GNU | |
2060 | && bed->elf_osabi != ELFOSABI_FREEBSD) | |
2061 | as_bad (_("symbol type \"%s\" is supported only by GNU " | |
2062 | "and FreeBSD targets"), type_name); | |
d8045f23 NC |
2063 | type = BSF_FUNCTION | BSF_GNU_INDIRECT_FUNCTION; |
2064 | } | |
1e9cc1c2 | 2065 | else if (strcmp (type_name, "gnu_unique_object") == 0) |
3e7a7d11 | 2066 | { |
d3ce72d0 | 2067 | struct elf_backend_data *bed; |
3e7a7d11 | 2068 | |
d3ce72d0 | 2069 | bed = (struct elf_backend_data *) get_elf_backend_data (stdoutput); |
df3a023b AM |
2070 | if (bed->elf_osabi == ELFOSABI_NONE) |
2071 | bed->elf_osabi = ELFOSABI_GNU; | |
2072 | else if (bed->elf_osabi != ELFOSABI_GNU) | |
3e7a7d11 | 2073 | as_bad (_("symbol type \"%s\" is supported only by GNU targets"), |
1e9cc1c2 | 2074 | type_name); |
3e7a7d11 NC |
2075 | type = BSF_OBJECT | BSF_GNU_UNIQUE; |
2076 | } | |
904a31bf | 2077 | #ifdef md_elf_symbol_type |
1e9cc1c2 | 2078 | else if ((type = md_elf_symbol_type (type_name, sym, elfsym)) != -1) |
904a31bf AM |
2079 | ; |
2080 | #endif | |
252b5132 | 2081 | else |
1e9cc1c2 | 2082 | as_bad (_("unrecognized symbol type \"%s\""), type_name); |
252b5132 RH |
2083 | |
2084 | *input_line_pointer = c; | |
2085 | ||
aa8c34c3 JE |
2086 | if (*input_line_pointer == '"') |
2087 | ++input_line_pointer; | |
2088 | ||
f2d4ba38 JB |
2089 | #ifdef md_elf_symbol_type_change |
2090 | if (!md_elf_symbol_type_change (sym, elfsym, type)) | |
2091 | #endif | |
2092 | { | |
2093 | flagword mask = BSF_FUNCTION | BSF_OBJECT; | |
2094 | ||
2095 | if (type != BSF_FUNCTION) | |
2096 | mask |= BSF_GNU_INDIRECT_FUNCTION; | |
2097 | if (type != BSF_OBJECT) | |
2098 | { | |
2099 | mask |= BSF_GNU_UNIQUE | BSF_THREAD_LOCAL; | |
2100 | ||
2101 | if (S_IS_COMMON (sym)) | |
2102 | { | |
2103 | as_bad (_("cannot change type of common symbol '%s'"), | |
2104 | S_GET_NAME (sym)); | |
2105 | mask = type = 0; | |
2106 | } | |
2107 | } | |
2108 | ||
2109 | /* Don't warn when changing to STT_NOTYPE. */ | |
2110 | if (type) | |
2111 | { | |
2112 | flagword new = (elfsym->symbol.flags & ~mask) | type; | |
2113 | ||
2114 | if (new != (elfsym->symbol.flags | type)) | |
2115 | as_warn (_("symbol '%s' already has its type set"), S_GET_NAME (sym)); | |
2116 | elfsym->symbol.flags = new; | |
2117 | } | |
2118 | else | |
2119 | elfsym->symbol.flags &= ~mask; | |
2120 | } | |
252b5132 RH |
2121 | |
2122 | demand_empty_rest_of_line (); | |
2123 | } | |
2124 | ||
2125 | static void | |
dbe2df79 | 2126 | obj_elf_ident (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2127 | { |
2128 | static segT comment_section; | |
2129 | segT old_section = now_seg; | |
2130 | int old_subsection = now_subseg; | |
2131 | ||
5f91fe03 ILT |
2132 | #ifdef md_flush_pending_output |
2133 | md_flush_pending_output (); | |
2134 | #endif | |
2135 | ||
252b5132 RH |
2136 | if (!comment_section) |
2137 | { | |
2138 | char *p; | |
2139 | comment_section = subseg_new (".comment", 0); | |
2140 | bfd_set_section_flags (stdoutput, comment_section, | |
01fb1836 RM |
2141 | SEC_READONLY | SEC_HAS_CONTENTS |
2142 | | SEC_MERGE | SEC_STRINGS); | |
2143 | comment_section->entsize = 1; | |
cd000bff DJ |
2144 | #ifdef md_elf_section_change_hook |
2145 | md_elf_section_change_hook (); | |
2146 | #endif | |
252b5132 RH |
2147 | p = frag_more (1); |
2148 | *p = 0; | |
2149 | } | |
2150 | else | |
2151 | subseg_set (comment_section, 0); | |
38a57ae7 | 2152 | stringer (8 + 1); |
252b5132 RH |
2153 | subseg_set (old_section, old_subsection); |
2154 | } | |
2155 | ||
2156 | #ifdef INIT_STAB_SECTION | |
2157 | ||
2158 | /* The first entry in a .stabs section is special. */ | |
2159 | ||
2160 | void | |
dbe2df79 | 2161 | obj_elf_init_stab_section (segT seg) |
252b5132 | 2162 | { |
3b4dbbbf | 2163 | const char *file; |
252b5132 RH |
2164 | char *p; |
2165 | char *stabstr_name; | |
2166 | unsigned int stroff; | |
2167 | ||
2168 | /* Force the section to align to a longword boundary. Without this, | |
2169 | UnixWare ar crashes. */ | |
2170 | bfd_set_section_alignment (stdoutput, seg, 2); | |
2171 | ||
bf514e21 | 2172 | /* Make space for this first symbol. */ |
252b5132 | 2173 | p = frag_more (12); |
bf514e21 | 2174 | /* Zero it out. */ |
252b5132 | 2175 | memset (p, 0, 12); |
3b4dbbbf | 2176 | file = as_where (NULL); |
29a2809e | 2177 | stabstr_name = concat (segment_name (seg), "str", (char *) NULL); |
0acc7632 | 2178 | stroff = get_stab_string_offset (file, stabstr_name, TRUE); |
91952a06 | 2179 | know (stroff == 1 || (stroff == 0 && file[0] == '\0')); |
252b5132 RH |
2180 | md_number_to_chars (p, stroff, 4); |
2181 | seg_info (seg)->stabu.p = p; | |
2182 | } | |
2183 | ||
2184 | #endif | |
2185 | ||
2186 | /* Fill in the counts in the first entry in a .stabs section. */ | |
2187 | ||
2188 | static void | |
dbe2df79 | 2189 | adjust_stab_sections (bfd *abfd, asection *sec, void *xxx ATTRIBUTE_UNUSED) |
252b5132 RH |
2190 | { |
2191 | char *name; | |
2192 | asection *strsec; | |
2193 | char *p; | |
2194 | int strsz, nsyms; | |
2195 | ||
2196 | if (strncmp (".stab", sec->name, 5)) | |
2197 | return; | |
2198 | if (!strcmp ("str", sec->name + strlen (sec->name) - 3)) | |
2199 | return; | |
2200 | ||
e1fa0163 | 2201 | name = concat (sec->name, "str", NULL); |
252b5132 RH |
2202 | strsec = bfd_get_section_by_name (abfd, name); |
2203 | if (strsec) | |
2204 | strsz = bfd_section_size (abfd, strsec); | |
2205 | else | |
2206 | strsz = 0; | |
2207 | nsyms = bfd_section_size (abfd, sec) / 12 - 1; | |
2208 | ||
2209 | p = seg_info (sec)->stabu.p; | |
9c2799c2 | 2210 | gas_assert (p != 0); |
252b5132 | 2211 | |
dbe2df79 AM |
2212 | bfd_h_put_16 (abfd, nsyms, p + 6); |
2213 | bfd_h_put_32 (abfd, strsz, p + 8); | |
e1fa0163 | 2214 | free (name); |
252b5132 RH |
2215 | } |
2216 | ||
2217 | #ifdef NEED_ECOFF_DEBUG | |
2218 | ||
2219 | /* This function is called by the ECOFF code. It is supposed to | |
2220 | record the external symbol information so that the backend can | |
2221 | write it out correctly. The ELF backend doesn't actually handle | |
2222 | this at the moment, so we do it ourselves. We save the information | |
2223 | in the symbol. */ | |
2224 | ||
ae4a729b AM |
2225 | #ifdef OBJ_MAYBE_ELF |
2226 | static | |
2227 | #endif | |
252b5132 | 2228 | void |
dbe2df79 | 2229 | elf_ecoff_set_ext (symbolS *sym, struct ecoff_extr *ext) |
252b5132 | 2230 | { |
dbe2df79 | 2231 | symbol_get_bfdsym (sym)->udata.p = ext; |
252b5132 RH |
2232 | } |
2233 | ||
2234 | /* This function is called by bfd_ecoff_debug_externals. It is | |
2235 | supposed to *EXT to the external symbol information, and return | |
2236 | whether the symbol should be used at all. */ | |
2237 | ||
b34976b6 | 2238 | static bfd_boolean |
dbe2df79 | 2239 | elf_get_extr (asymbol *sym, EXTR *ext) |
252b5132 RH |
2240 | { |
2241 | if (sym->udata.p == NULL) | |
b34976b6 | 2242 | return FALSE; |
252b5132 | 2243 | *ext = *(EXTR *) sym->udata.p; |
b34976b6 | 2244 | return TRUE; |
252b5132 RH |
2245 | } |
2246 | ||
2247 | /* This function is called by bfd_ecoff_debug_externals. It has | |
2248 | nothing to do for ELF. */ | |
2249 | ||
252b5132 | 2250 | static void |
dbe2df79 AM |
2251 | elf_set_index (asymbol *sym ATTRIBUTE_UNUSED, |
2252 | bfd_size_type indx ATTRIBUTE_UNUSED) | |
252b5132 RH |
2253 | { |
2254 | } | |
2255 | ||
2256 | #endif /* NEED_ECOFF_DEBUG */ | |
2257 | ||
2258 | void | |
dbe2df79 | 2259 | elf_frob_symbol (symbolS *symp, int *puntp) |
252b5132 | 2260 | { |
49309057 | 2261 | struct elf_obj_sy *sy_obj; |
49002d7f | 2262 | expressionS *size; |
49309057 | 2263 | |
252b5132 RH |
2264 | #ifdef NEED_ECOFF_DEBUG |
2265 | if (ECOFF_DEBUGGING) | |
2266 | ecoff_frob_symbol (symp); | |
2267 | #endif | |
2268 | ||
49309057 ILT |
2269 | sy_obj = symbol_get_obj (symp); |
2270 | ||
49002d7f L |
2271 | size = sy_obj->size; |
2272 | if (size != NULL) | |
252b5132 | 2273 | { |
49002d7f L |
2274 | if (resolve_expression (size) |
2275 | && size->X_op == O_constant) | |
2276 | S_SET_SIZE (symp, size->X_add_number); | |
e1e90034 | 2277 | else |
49002d7f | 2278 | { |
a90fb5e3 | 2279 | if (!flag_allow_nonconst_size) |
869fe6ea AM |
2280 | as_bad (_(".size expression for %s " |
2281 | "does not evaluate to a constant"), S_GET_NAME (symp)); | |
21be61f5 | 2282 | else |
869fe6ea AM |
2283 | as_warn (_(".size expression for %s " |
2284 | "does not evaluate to a constant"), S_GET_NAME (symp)); | |
49002d7f | 2285 | } |
49309057 ILT |
2286 | free (sy_obj->size); |
2287 | sy_obj->size = NULL; | |
252b5132 RH |
2288 | } |
2289 | ||
49309057 | 2290 | if (sy_obj->versioned_name != NULL) |
252b5132 | 2291 | { |
79082ff0 L |
2292 | char *p; |
2293 | ||
2294 | p = strchr (sy_obj->versioned_name, ELF_VER_CHR); | |
85024cd8 AM |
2295 | if (p == NULL) |
2296 | /* We will have already reported an error about a missing version. */ | |
2297 | *puntp = TRUE; | |
79082ff0 | 2298 | |
252b5132 RH |
2299 | /* This symbol was given a new name with the .symver directive. |
2300 | ||
13c56984 AM |
2301 | If this is an external reference, just rename the symbol to |
2302 | include the version string. This will make the relocs be | |
2303 | against the correct versioned symbol. | |
252b5132 RH |
2304 | |
2305 | If this is a definition, add an alias. FIXME: Using an alias | |
2306 | will permit the debugging information to refer to the right | |
2307 | symbol. However, it's not clear whether it is the best | |
2308 | approach. */ | |
2309 | ||
85024cd8 | 2310 | else if (! S_IS_DEFINED (symp)) |
252b5132 | 2311 | { |
252b5132 | 2312 | /* Verify that the name isn't using the @@ syntax--this is |
13c56984 AM |
2313 | reserved for definitions of the default version to link |
2314 | against. */ | |
252b5132 RH |
2315 | if (p[1] == ELF_VER_CHR) |
2316 | { | |
85024cd8 AM |
2317 | as_bad (_("invalid attempt to declare external version name" |
2318 | " as default in symbol `%s'"), | |
49309057 | 2319 | sy_obj->versioned_name); |
b34976b6 | 2320 | *puntp = TRUE; |
252b5132 | 2321 | } |
49309057 | 2322 | S_SET_NAME (symp, sy_obj->versioned_name); |
252b5132 RH |
2323 | } |
2324 | else | |
2325 | { | |
dbe2df79 | 2326 | if (p[1] == ELF_VER_CHR && p[2] == ELF_VER_CHR) |
79082ff0 L |
2327 | { |
2328 | size_t l; | |
2329 | ||
2330 | /* The @@@ syntax is a special case. It renames the | |
2331 | symbol name to versioned_name with one `@' removed. */ | |
2332 | l = strlen (&p[3]) + 1; | |
dbe2df79 | 2333 | memmove (&p[2], &p[3], l); |
79082ff0 L |
2334 | S_SET_NAME (symp, sy_obj->versioned_name); |
2335 | } | |
2336 | else | |
2337 | { | |
2338 | symbolS *symp2; | |
252b5132 | 2339 | |
79082ff0 L |
2340 | /* FIXME: Creating a new symbol here is risky. We're |
2341 | in the final loop over the symbol table. We can | |
2342 | get away with it only because the symbol goes to | |
2343 | the end of the list, where the loop will still see | |
2344 | it. It would probably be better to do this in | |
2345 | obj_frob_file_before_adjust. */ | |
252b5132 | 2346 | |
79082ff0 | 2347 | symp2 = symbol_find_or_make (sy_obj->versioned_name); |
252b5132 | 2348 | |
79082ff0 | 2349 | /* Now we act as though we saw symp2 = sym. */ |
a3aea05a L |
2350 | if (S_IS_COMMON (symp)) |
2351 | { | |
2352 | as_bad (_("`%s' can't be versioned to common symbol '%s'"), | |
2353 | sy_obj->versioned_name, S_GET_NAME (symp)); | |
2354 | *puntp = TRUE; | |
2355 | return; | |
2356 | } | |
252b5132 | 2357 | |
79082ff0 | 2358 | S_SET_SEGMENT (symp2, S_GET_SEGMENT (symp)); |
252b5132 | 2359 | |
79082ff0 L |
2360 | /* Subtracting out the frag address here is a hack |
2361 | because we are in the middle of the final loop. */ | |
2362 | S_SET_VALUE (symp2, | |
2363 | (S_GET_VALUE (symp) | |
2364 | - symbol_get_frag (symp)->fr_address)); | |
252b5132 | 2365 | |
79082ff0 | 2366 | symbol_set_frag (symp2, symbol_get_frag (symp)); |
252b5132 | 2367 | |
79082ff0 L |
2368 | /* This will copy over the size information. */ |
2369 | copy_symbol_attributes (symp2, symp); | |
252b5132 | 2370 | |
26eb4093 JJ |
2371 | S_SET_OTHER (symp2, S_GET_OTHER (symp)); |
2372 | ||
79082ff0 L |
2373 | if (S_IS_WEAK (symp)) |
2374 | S_SET_WEAK (symp2); | |
252b5132 | 2375 | |
79082ff0 L |
2376 | if (S_IS_EXTERNAL (symp)) |
2377 | S_SET_EXTERNAL (symp2); | |
2378 | } | |
252b5132 RH |
2379 | } |
2380 | } | |
2381 | ||
2382 | /* Double check weak symbols. */ | |
49309057 | 2383 | if (S_IS_WEAK (symp)) |
252b5132 RH |
2384 | { |
2385 | if (S_IS_COMMON (symp)) | |
6ce8b369 | 2386 | as_bad (_("symbol `%s' can not be both weak and common"), |
252b5132 RH |
2387 | S_GET_NAME (symp)); |
2388 | } | |
252b5132 RH |
2389 | } |
2390 | ||
060adf0e AM |
2391 | struct group_list |
2392 | { | |
2393 | asection **head; /* Section lists. */ | |
060adf0e | 2394 | unsigned int num_group; /* Number of lists. */ |
1e9cc1c2 | 2395 | struct hash_control *indexes; /* Maps group name to index in head array. */ |
060adf0e AM |
2396 | }; |
2397 | ||
db4677b8 AM |
2398 | static struct group_list groups; |
2399 | ||
060adf0e AM |
2400 | /* Called via bfd_map_over_sections. If SEC is a member of a group, |
2401 | add it to a list of sections belonging to the group. INF is a | |
2402 | pointer to a struct group_list, which is where we store the head of | |
2403 | each list. */ | |
2404 | ||
2405 | static void | |
dbe2df79 | 2406 | build_group_lists (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *inf) |
060adf0e | 2407 | { |
1e9cc1c2 | 2408 | struct group_list *list = (struct group_list *) inf; |
aa1f4858 | 2409 | const char *group_name = elf_group_name (sec); |
060adf0e | 2410 | unsigned int i; |
1e9cc1c2 NC |
2411 | unsigned int *elem_idx; |
2412 | unsigned int *idx_ptr; | |
060adf0e AM |
2413 | |
2414 | if (group_name == NULL) | |
2415 | return; | |
2416 | ||
2417 | /* If this group already has a list, add the section to the head of | |
2418 | the list. */ | |
1e9cc1c2 NC |
2419 | elem_idx = (unsigned int *) hash_find (list->indexes, group_name); |
2420 | if (elem_idx != NULL) | |
060adf0e | 2421 | { |
1e9cc1c2 NC |
2422 | elf_next_in_group (sec) = list->head[*elem_idx]; |
2423 | list->head[*elem_idx] = sec; | |
1e9cc1c2 | 2424 | return; |
060adf0e AM |
2425 | } |
2426 | ||
2427 | /* New group. Make the arrays bigger in chunks to minimize calls to | |
2428 | realloc. */ | |
2429 | i = list->num_group; | |
2430 | if ((i & 127) == 0) | |
2431 | { | |
2432 | unsigned int newsize = i + 128; | |
add39d23 | 2433 | list->head = XRESIZEVEC (asection *, list->head, newsize); |
060adf0e AM |
2434 | } |
2435 | list->head[i] = sec; | |
060adf0e | 2436 | list->num_group += 1; |
1e9cc1c2 NC |
2437 | |
2438 | /* Add index to hash. */ | |
325801bd | 2439 | idx_ptr = XNEW (unsigned int); |
1e9cc1c2 NC |
2440 | *idx_ptr = i; |
2441 | hash_insert (list->indexes, group_name, idx_ptr); | |
2442 | } | |
2443 | ||
2444 | static void free_section_idx (const char *key ATTRIBUTE_UNUSED, void *val) | |
2445 | { | |
2446 | free ((unsigned int *) val); | |
060adf0e AM |
2447 | } |
2448 | ||
db4677b8 AM |
2449 | /* Create symbols for group signature. */ |
2450 | ||
252b5132 | 2451 | void |
709001e9 | 2452 | elf_adjust_symtab (void) |
252b5132 | 2453 | { |
060adf0e AM |
2454 | unsigned int i; |
2455 | ||
060adf0e | 2456 | /* Go find section groups. */ |
db4677b8 AM |
2457 | groups.num_group = 0; |
2458 | groups.head = NULL; | |
2459 | groups.indexes = hash_new (); | |
2460 | bfd_map_over_sections (stdoutput, build_group_lists, &groups); | |
3739860c | 2461 | |
060adf0e AM |
2462 | /* Make the SHT_GROUP sections that describe each section group. We |
2463 | can't set up the section contents here yet, because elf section | |
2464 | indices have yet to be calculated. elf.c:set_group_contents does | |
2465 | the rest of the work. */ | |
db4677b8 | 2466 | for (i = 0; i < groups.num_group; i++) |
060adf0e | 2467 | { |
db4677b8 | 2468 | const char *group_name = elf_group_name (groups.head[i]); |
9758f3fc | 2469 | const char *sec_name; |
060adf0e AM |
2470 | asection *s; |
2471 | flagword flags; | |
9758f3fc | 2472 | struct symbol *sy; |
060adf0e | 2473 | |
060adf0e | 2474 | flags = SEC_READONLY | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_GROUP; |
db4677b8 | 2475 | for (s = groups.head[i]; s != NULL; s = elf_next_in_group (s)) |
68bfbfcc | 2476 | if ((s->flags ^ flags) & SEC_LINK_ONCE) |
d2dab548 AM |
2477 | { |
2478 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
db4677b8 | 2479 | if (s != groups.head[i]) |
d2dab548 AM |
2480 | { |
2481 | as_warn (_("assuming all members of group `%s' are COMDAT"), | |
2482 | group_name); | |
2483 | break; | |
2484 | } | |
2485 | } | |
2486 | ||
709001e9 | 2487 | sec_name = ".group"; |
9758f3fc | 2488 | s = subseg_force_new (sec_name, 0); |
060adf0e AM |
2489 | if (s == NULL |
2490 | || !bfd_set_section_flags (stdoutput, s, flags) | |
2491 | || !bfd_set_section_alignment (stdoutput, s, 2)) | |
2492 | { | |
2493 | as_fatal (_("can't create group: %s"), | |
2494 | bfd_errmsg (bfd_get_error ())); | |
2495 | } | |
2f89ff8d | 2496 | elf_section_type (s) = SHT_GROUP; |
060adf0e | 2497 | |
aa1f4858 | 2498 | /* Pass a pointer to the first section in this group. */ |
db4677b8 AM |
2499 | elf_next_in_group (s) = groups.head[i]; |
2500 | elf_sec_group (groups.head[i]) = s; | |
709001e9 MM |
2501 | /* Make sure that the signature symbol for the group has the |
2502 | name of the group. */ | |
2503 | sy = symbol_find_exact (group_name); | |
8d1015a8 | 2504 | if (!sy || !symbol_on_chain (sy, symbol_rootP, symbol_lastP)) |
709001e9 MM |
2505 | { |
2506 | /* Create the symbol now. */ | |
2507 | sy = symbol_new (group_name, now_seg, (valueT) 0, frag_now); | |
69b70cfe RO |
2508 | #ifdef TE_SOLARIS |
2509 | /* Before Solaris 11 build 154, Sun ld rejects local group | |
2510 | signature symbols, so make them weak hidden instead. */ | |
2511 | symbol_get_bfdsym (sy)->flags |= BSF_WEAK; | |
2512 | S_SET_OTHER (sy, STV_HIDDEN); | |
2513 | #else | |
709001e9 | 2514 | symbol_get_obj (sy)->local = 1; |
69b70cfe | 2515 | #endif |
709001e9 MM |
2516 | symbol_table_insert (sy); |
2517 | } | |
2518 | elf_group_id (s) = symbol_get_bfdsym (sy); | |
060adf0e | 2519 | } |
252b5132 RH |
2520 | } |
2521 | ||
709001e9 MM |
2522 | void |
2523 | elf_frob_file (void) | |
2524 | { | |
2525 | bfd_map_over_sections (stdoutput, adjust_stab_sections, NULL); | |
2526 | ||
2527 | #ifdef elf_tc_final_processing | |
2528 | elf_tc_final_processing (); | |
2529 | #endif | |
2530 | } | |
2531 | ||
4a1805b1 | 2532 | /* It removes any unneeded versioned symbols from the symbol table. */ |
339681c0 L |
2533 | |
2534 | void | |
dbe2df79 | 2535 | elf_frob_file_before_adjust (void) |
339681c0 L |
2536 | { |
2537 | if (symbol_rootP) | |
2538 | { | |
2539 | symbolS *symp; | |
2540 | ||
2541 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) | |
00e6e13d | 2542 | if (!S_IS_DEFINED (symp)) |
79082ff0 | 2543 | { |
00e6e13d | 2544 | if (symbol_get_obj (symp)->versioned_name) |
79082ff0 L |
2545 | { |
2546 | char *p; | |
2547 | ||
2548 | /* The @@@ syntax is a special case. If the symbol is | |
2549 | not defined, 2 `@'s will be removed from the | |
2550 | versioned_name. */ | |
2551 | ||
2552 | p = strchr (symbol_get_obj (symp)->versioned_name, | |
2553 | ELF_VER_CHR); | |
85024cd8 | 2554 | if (p != NULL && p[1] == ELF_VER_CHR && p[2] == ELF_VER_CHR) |
79082ff0 L |
2555 | { |
2556 | size_t l = strlen (&p[3]) + 1; | |
dbe2df79 | 2557 | memmove (&p[1], &p[3], l); |
79082ff0 L |
2558 | } |
2559 | if (symbol_used_p (symp) == 0 | |
2560 | && symbol_used_in_reloc_p (symp) == 0) | |
2561 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
2562 | } | |
00e6e13d JJ |
2563 | |
2564 | /* If there was .weak foo, but foo was neither defined nor | |
2565 | used anywhere, remove it. */ | |
2566 | ||
2567 | else if (S_IS_WEAK (symp) | |
2568 | && symbol_used_p (symp) == 0 | |
2569 | && symbol_used_in_reloc_p (symp) == 0) | |
2570 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
79082ff0 | 2571 | } |
339681c0 L |
2572 | } |
2573 | } | |
2574 | ||
252b5132 RH |
2575 | /* It is required that we let write_relocs have the opportunity to |
2576 | optimize away fixups before output has begun, since it is possible | |
2577 | to eliminate all fixups for a section and thus we never should | |
2578 | have generated the relocation section. */ | |
2579 | ||
2580 | void | |
dbe2df79 | 2581 | elf_frob_file_after_relocs (void) |
252b5132 | 2582 | { |
db4677b8 AM |
2583 | unsigned int i; |
2584 | ||
2585 | /* Set SHT_GROUP section size. */ | |
2586 | for (i = 0; i < groups.num_group; i++) | |
2587 | { | |
2588 | asection *s, *head, *group; | |
2589 | bfd_size_type size; | |
2590 | ||
2591 | head = groups.head[i]; | |
2592 | size = 4; | |
2593 | for (s = head; s != NULL; s = elf_next_in_group (s)) | |
2594 | size += (s->flags & SEC_RELOC) != 0 ? 8 : 4; | |
2595 | ||
2596 | group = elf_sec_group (head); | |
2597 | subseg_set (group, 0); | |
2598 | bfd_set_section_size (stdoutput, group, size); | |
2599 | group->contents = (unsigned char *) frag_more (size); | |
2600 | frag_now->fr_fix = frag_now_fix_octets (); | |
2601 | frag_wane (frag_now); | |
2602 | } | |
2603 | ||
2604 | /* Cleanup hash. */ | |
2605 | hash_traverse (groups.indexes, free_section_idx); | |
2606 | hash_die (groups.indexes); | |
2607 | ||
252b5132 RH |
2608 | #ifdef NEED_ECOFF_DEBUG |
2609 | if (ECOFF_DEBUGGING) | |
2610 | /* Generate the ECOFF debugging information. */ | |
2611 | { | |
2612 | const struct ecoff_debug_swap *debug_swap; | |
2613 | struct ecoff_debug_info debug; | |
2614 | char *buf; | |
2615 | asection *sec; | |
2616 | ||
2617 | debug_swap | |
2618 | = get_elf_backend_data (stdoutput)->elf_backend_ecoff_debug_swap; | |
dbe2df79 | 2619 | know (debug_swap != NULL); |
252b5132 RH |
2620 | ecoff_build_debug (&debug.symbolic_header, &buf, debug_swap); |
2621 | ||
2622 | /* Set up the pointers in debug. */ | |
2623 | #define SET(ptr, offset, type) \ | |
2624 | debug.ptr = (type) (buf + debug.symbolic_header.offset) | |
2625 | ||
2626 | SET (line, cbLineOffset, unsigned char *); | |
dbe2df79 AM |
2627 | SET (external_dnr, cbDnOffset, void *); |
2628 | SET (external_pdr, cbPdOffset, void *); | |
2629 | SET (external_sym, cbSymOffset, void *); | |
2630 | SET (external_opt, cbOptOffset, void *); | |
252b5132 RH |
2631 | SET (external_aux, cbAuxOffset, union aux_ext *); |
2632 | SET (ss, cbSsOffset, char *); | |
dbe2df79 AM |
2633 | SET (external_fdr, cbFdOffset, void *); |
2634 | SET (external_rfd, cbRfdOffset, void *); | |
252b5132 RH |
2635 | /* ssext and external_ext are set up just below. */ |
2636 | ||
2637 | #undef SET | |
2638 | ||
2639 | /* Set up the external symbols. */ | |
2640 | debug.ssext = debug.ssext_end = NULL; | |
2641 | debug.external_ext = debug.external_ext_end = NULL; | |
b34976b6 | 2642 | if (! bfd_ecoff_debug_externals (stdoutput, &debug, debug_swap, TRUE, |
252b5132 | 2643 | elf_get_extr, elf_set_index)) |
6ce8b369 | 2644 | as_fatal (_("failed to set up debugging information: %s"), |
252b5132 RH |
2645 | bfd_errmsg (bfd_get_error ())); |
2646 | ||
2647 | sec = bfd_get_section_by_name (stdoutput, ".mdebug"); | |
9c2799c2 | 2648 | gas_assert (sec != NULL); |
252b5132 | 2649 | |
b34976b6 | 2650 | know (!stdoutput->output_has_begun); |
252b5132 RH |
2651 | |
2652 | /* We set the size of the section, call bfd_set_section_contents | |
2653 | to force the ELF backend to allocate a file position, and then | |
2654 | write out the data. FIXME: Is this really the best way to do | |
2655 | this? */ | |
587aac4e AM |
2656 | bfd_set_section_size |
2657 | (stdoutput, sec, bfd_ecoff_debug_size (stdoutput, &debug, debug_swap)); | |
252b5132 | 2658 | |
5f91fe03 | 2659 | /* Pass BUF to bfd_set_section_contents because this will |
13c56984 AM |
2660 | eventually become a call to fwrite, and ISO C prohibits |
2661 | passing a NULL pointer to a stdio function even if the | |
2662 | pointer will not be used. */ | |
dbe2df79 | 2663 | if (! bfd_set_section_contents (stdoutput, sec, buf, 0, 0)) |
6ce8b369 | 2664 | as_fatal (_("can't start writing .mdebug section: %s"), |
252b5132 RH |
2665 | bfd_errmsg (bfd_get_error ())); |
2666 | ||
b34976b6 | 2667 | know (stdoutput->output_has_begun); |
252b5132 RH |
2668 | know (sec->filepos != 0); |
2669 | ||
2670 | if (! bfd_ecoff_write_debug (stdoutput, &debug, debug_swap, | |
2671 | sec->filepos)) | |
6ce8b369 | 2672 | as_fatal (_("could not write .mdebug section: %s"), |
252b5132 RH |
2673 | bfd_errmsg (bfd_get_error ())); |
2674 | } | |
2675 | #endif /* NEED_ECOFF_DEBUG */ | |
2676 | } | |
2677 | ||
bc6b4acc RO |
2678 | static void |
2679 | elf_generate_asm_lineno (void) | |
2680 | { | |
2681 | #ifdef NEED_ECOFF_DEBUG | |
2682 | if (ECOFF_DEBUGGING) | |
2683 | ecoff_generate_asm_lineno (); | |
2684 | #endif | |
2685 | } | |
2686 | ||
2687 | static void | |
bd937d21 L |
2688 | elf_process_stab (segT sec ATTRIBUTE_UNUSED, |
2689 | int what ATTRIBUTE_UNUSED, | |
2690 | const char *string ATTRIBUTE_UNUSED, | |
2691 | int type ATTRIBUTE_UNUSED, | |
2692 | int other ATTRIBUTE_UNUSED, | |
2693 | int desc ATTRIBUTE_UNUSED) | |
bc6b4acc RO |
2694 | { |
2695 | #ifdef NEED_ECOFF_DEBUG | |
2696 | if (ECOFF_DEBUGGING) | |
2697 | ecoff_stab (sec, what, string, type, other, desc); | |
2698 | #endif | |
2699 | } | |
2700 | ||
5110c57e | 2701 | static int |
dbe2df79 | 2702 | elf_separate_stab_sections (void) |
5110c57e HPN |
2703 | { |
2704 | #ifdef NEED_ECOFF_DEBUG | |
2705 | return (!ECOFF_DEBUGGING); | |
2706 | #else | |
2707 | return 1; | |
2708 | #endif | |
2709 | } | |
2710 | ||
2711 | static void | |
dbe2df79 | 2712 | elf_init_stab_section (segT seg) |
5110c57e HPN |
2713 | { |
2714 | #ifdef NEED_ECOFF_DEBUG | |
2715 | if (!ECOFF_DEBUGGING) | |
2716 | #endif | |
2717 | obj_elf_init_stab_section (seg); | |
2718 | } | |
2719 | ||
252b5132 RH |
2720 | const struct format_ops elf_format_ops = |
2721 | { | |
2722 | bfd_target_elf_flavour, | |
4c63da97 AM |
2723 | 0, /* dfl_leading_underscore */ |
2724 | 1, /* emit_section_symbols */ | |
5110c57e HPN |
2725 | elf_begin, |
2726 | elf_file_symbol, | |
252b5132 RH |
2727 | elf_frob_symbol, |
2728 | elf_frob_file, | |
339681c0 | 2729 | elf_frob_file_before_adjust, |
a161fe53 | 2730 | 0, /* obj_frob_file_before_fix */ |
252b5132 RH |
2731 | elf_frob_file_after_relocs, |
2732 | elf_s_get_size, elf_s_set_size, | |
2733 | elf_s_get_align, elf_s_set_align, | |
4c63da97 | 2734 | elf_s_get_other, |
5110c57e | 2735 | elf_s_set_other, |
4c63da97 | 2736 | 0, /* s_get_desc */ |
5110c57e HPN |
2737 | 0, /* s_set_desc */ |
2738 | 0, /* s_get_type */ | |
2739 | 0, /* s_set_type */ | |
252b5132 | 2740 | elf_copy_symbol_attributes, |
bc6b4acc RO |
2741 | elf_generate_asm_lineno, |
2742 | elf_process_stab, | |
5110c57e HPN |
2743 | elf_separate_stab_sections, |
2744 | elf_init_stab_section, | |
252b5132 RH |
2745 | elf_sec_sym_ok_for_reloc, |
2746 | elf_pop_insert, | |
2747 | #ifdef NEED_ECOFF_DEBUG | |
2748 | elf_ecoff_set_ext, | |
2749 | #else | |
4c63da97 | 2750 | 0, /* ecoff_set_ext */ |
252b5132 | 2751 | #endif |
4c63da97 | 2752 | elf_obj_read_begin_hook, |
4cae74aa | 2753 | elf_obj_symbol_new_hook, |
645ea3ea AM |
2754 | 0, |
2755 | elf_adjust_symtab | |
252b5132 | 2756 | }; |