Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* ELF object file format |
cc8a6dd0 | 2 | Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
f17c130b | 3 | 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc. |
252b5132 RH |
4 | |
5 | This file is part of GAS, the GNU Assembler. | |
6 | ||
7 | GAS is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as | |
9 | published by the Free Software Foundation; either version 2, | |
10 | or (at your option) any later version. | |
11 | ||
12 | GAS is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
15 | the GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GAS; see the file COPYING. If not, write to the Free | |
4b4da160 NC |
19 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
20 | 02110-1301, USA. */ | |
252b5132 RH |
21 | |
22 | #define OBJ_HEADER "obj-elf.h" | |
23 | #include "as.h" | |
3882b010 | 24 | #include "safe-ctype.h" |
252b5132 RH |
25 | #include "subsegs.h" |
26 | #include "obstack.h" | |
9758f3fc | 27 | #include "struc-symbol.h" |
87ccc1b0 | 28 | #include "dwarf2dbg.h" |
252b5132 RH |
29 | |
30 | #ifndef ECOFF_DEBUGGING | |
31 | #define ECOFF_DEBUGGING 0 | |
32 | #else | |
33 | #define NEED_ECOFF_DEBUG | |
34 | #endif | |
35 | ||
36 | #ifdef NEED_ECOFF_DEBUG | |
37 | #include "ecoff.h" | |
38 | #endif | |
39 | ||
40 | #ifdef TC_ALPHA | |
41 | #include "elf/alpha.h" | |
42 | #endif | |
43 | ||
44 | #ifdef TC_MIPS | |
45 | #include "elf/mips.h" | |
46 | #endif | |
47 | ||
48 | #ifdef TC_PPC | |
49 | #include "elf/ppc.h" | |
50 | #endif | |
51 | ||
5b93d8bb AM |
52 | #ifdef TC_I370 |
53 | #include "elf/i370.h" | |
54 | #endif | |
55 | ||
3b22753a L |
56 | #ifdef TC_I386 |
57 | #include "elf/x86-64.h" | |
58 | #endif | |
59 | ||
dbe2df79 AM |
60 | static void obj_elf_line (int); |
61 | static void obj_elf_size (int); | |
62 | static void obj_elf_type (int); | |
63 | static void obj_elf_ident (int); | |
64 | static void obj_elf_weak (int); | |
65 | static void obj_elf_local (int); | |
66 | static void obj_elf_visibility (int); | |
67 | static void obj_elf_symver (int); | |
68 | static void obj_elf_subsection (int); | |
69 | static void obj_elf_popsection (int); | |
70 | static void obj_elf_tls_common (int); | |
13c56984 | 71 | static void obj_elf_lcomm (int); |
8fe53b44 | 72 | static void obj_elf_struct (int); |
252b5132 RH |
73 | |
74 | static const pseudo_typeS elf_pseudo_table[] = | |
75 | { | |
76 | {"comm", obj_elf_common, 0}, | |
9be1cda6 | 77 | {"common", obj_elf_common, 1}, |
252b5132 | 78 | {"ident", obj_elf_ident, 0}, |
13c56984 | 79 | {"lcomm", obj_elf_lcomm, 0}, |
252b5132 RH |
80 | {"local", obj_elf_local, 0}, |
81 | {"previous", obj_elf_previous, 0}, | |
82 | {"section", obj_elf_section, 0}, | |
83 | {"section.s", obj_elf_section, 0}, | |
84 | {"sect", obj_elf_section, 0}, | |
85 | {"sect.s", obj_elf_section, 0}, | |
9de8d8f1 RH |
86 | {"pushsection", obj_elf_section, 1}, |
87 | {"popsection", obj_elf_popsection, 0}, | |
252b5132 RH |
88 | {"size", obj_elf_size, 0}, |
89 | {"type", obj_elf_type, 0}, | |
90 | {"version", obj_elf_version, 0}, | |
91 | {"weak", obj_elf_weak, 0}, | |
92 | ||
bf514e21 | 93 | /* These define symbol visibility. */ |
2e13b764 NC |
94 | {"internal", obj_elf_visibility, STV_INTERNAL}, |
95 | {"hidden", obj_elf_visibility, STV_HIDDEN}, | |
96 | {"protected", obj_elf_visibility, STV_PROTECTED}, | |
97 | ||
252b5132 RH |
98 | /* These are used for stabs-in-elf configurations. */ |
99 | {"line", obj_elf_line, 0}, | |
100 | ||
101 | /* This is a GNU extension to handle symbol versions. */ | |
102 | {"symver", obj_elf_symver, 0}, | |
103 | ||
104 | /* A GNU extension to change subsection only. */ | |
105 | {"subsection", obj_elf_subsection, 0}, | |
106 | ||
107 | /* These are GNU extensions to aid in garbage collecting C++ vtables. */ | |
dbe2df79 AM |
108 | {"vtable_inherit", (void (*) (int)) &obj_elf_vtable_inherit, 0}, |
109 | {"vtable_entry", (void (*) (int)) &obj_elf_vtable_entry, 0}, | |
252b5132 | 110 | |
bf514e21 | 111 | /* These are used for dwarf. */ |
252b5132 RH |
112 | {"2byte", cons, 2}, |
113 | {"4byte", cons, 4}, | |
114 | {"8byte", cons, 8}, | |
87ccc1b0 | 115 | /* These are used for dwarf2. */ |
dbe2df79 | 116 | { "file", (void (*) (int)) dwarf2_directive_file, 0 }, |
87ccc1b0 | 117 | { "loc", dwarf2_directive_loc, 0 }, |
07a53e5c | 118 | { "loc_mark_labels", dwarf2_directive_loc_mark_labels, 0 }, |
252b5132 RH |
119 | |
120 | /* We need to trap the section changing calls to handle .previous. */ | |
121 | {"data", obj_elf_data, 0}, | |
8fe53b44 JB |
122 | {"offset", obj_elf_struct, 0}, |
123 | {"struct", obj_elf_struct, 0}, | |
252b5132 RH |
124 | {"text", obj_elf_text, 0}, |
125 | ||
13ae64f3 JJ |
126 | {"tls_common", obj_elf_tls_common, 0}, |
127 | ||
252b5132 | 128 | /* End sentinel. */ |
ab9da554 | 129 | {NULL, NULL, 0}, |
252b5132 RH |
130 | }; |
131 | ||
132 | static const pseudo_typeS ecoff_debug_pseudo_table[] = | |
133 | { | |
134 | #ifdef NEED_ECOFF_DEBUG | |
135 | /* COFF style debugging information for ECOFF. .ln is not used; .loc | |
136 | is used instead. */ | |
137 | { "def", ecoff_directive_def, 0 }, | |
138 | { "dim", ecoff_directive_dim, 0 }, | |
139 | { "endef", ecoff_directive_endef, 0 }, | |
140 | { "file", ecoff_directive_file, 0 }, | |
141 | { "scl", ecoff_directive_scl, 0 }, | |
142 | { "tag", ecoff_directive_tag, 0 }, | |
143 | { "val", ecoff_directive_val, 0 }, | |
144 | ||
145 | /* COFF debugging requires pseudo-ops .size and .type, but ELF | |
146 | already has meanings for those. We use .esize and .etype | |
147 | instead. These are only generated by gcc anyhow. */ | |
148 | { "esize", ecoff_directive_size, 0 }, | |
149 | { "etype", ecoff_directive_type, 0 }, | |
150 | ||
151 | /* ECOFF specific debugging information. */ | |
152 | { "begin", ecoff_directive_begin, 0 }, | |
153 | { "bend", ecoff_directive_bend, 0 }, | |
154 | { "end", ecoff_directive_end, 0 }, | |
155 | { "ent", ecoff_directive_ent, 0 }, | |
156 | { "fmask", ecoff_directive_fmask, 0 }, | |
157 | { "frame", ecoff_directive_frame, 0 }, | |
158 | { "loc", ecoff_directive_loc, 0 }, | |
159 | { "mask", ecoff_directive_mask, 0 }, | |
160 | ||
161 | /* Other ECOFF directives. */ | |
162 | { "extern", ecoff_directive_extern, 0 }, | |
163 | ||
164 | /* These are used on Irix. I don't know how to implement them. */ | |
165 | { "alias", s_ignore, 0 }, | |
166 | { "bgnb", s_ignore, 0 }, | |
167 | { "endb", s_ignore, 0 }, | |
168 | { "lab", s_ignore, 0 }, | |
169 | { "noalias", s_ignore, 0 }, | |
170 | { "verstamp", s_ignore, 0 }, | |
171 | { "vreg", s_ignore, 0 }, | |
172 | #endif | |
173 | ||
ab9da554 | 174 | {NULL, NULL, 0} /* end sentinel */ |
252b5132 RH |
175 | }; |
176 | ||
177 | #undef NO_RELOC | |
178 | #include "aout/aout64.h" | |
179 | ||
180 | /* This is called when the assembler starts. */ | |
181 | ||
3b22753a L |
182 | asection *elf_com_section_ptr; |
183 | ||
252b5132 | 184 | void |
dbe2df79 | 185 | elf_begin (void) |
252b5132 | 186 | { |
dbe2df79 AM |
187 | asection *s; |
188 | ||
252b5132 | 189 | /* Add symbols for the known sections to the symbol table. */ |
dbe2df79 AM |
190 | s = bfd_get_section_by_name (stdoutput, TEXT_SECTION_NAME); |
191 | symbol_table_insert (section_symbol (s)); | |
192 | s = bfd_get_section_by_name (stdoutput, DATA_SECTION_NAME); | |
193 | symbol_table_insert (section_symbol (s)); | |
194 | s = bfd_get_section_by_name (stdoutput, BSS_SECTION_NAME); | |
195 | symbol_table_insert (section_symbol (s)); | |
3b22753a | 196 | elf_com_section_ptr = bfd_com_section_ptr; |
252b5132 RH |
197 | } |
198 | ||
199 | void | |
dbe2df79 | 200 | elf_pop_insert (void) |
252b5132 RH |
201 | { |
202 | pop_insert (elf_pseudo_table); | |
203 | if (ECOFF_DEBUGGING) | |
204 | pop_insert (ecoff_debug_pseudo_table); | |
205 | } | |
206 | ||
207 | static bfd_vma | |
dbe2df79 | 208 | elf_s_get_size (symbolS *sym) |
252b5132 RH |
209 | { |
210 | return S_GET_SIZE (sym); | |
211 | } | |
212 | ||
213 | static void | |
dbe2df79 | 214 | elf_s_set_size (symbolS *sym, bfd_vma sz) |
252b5132 RH |
215 | { |
216 | S_SET_SIZE (sym, sz); | |
217 | } | |
218 | ||
219 | static bfd_vma | |
dbe2df79 | 220 | elf_s_get_align (symbolS *sym) |
252b5132 RH |
221 | { |
222 | return S_GET_ALIGN (sym); | |
223 | } | |
224 | ||
225 | static void | |
dbe2df79 | 226 | elf_s_set_align (symbolS *sym, bfd_vma align) |
252b5132 RH |
227 | { |
228 | S_SET_ALIGN (sym, align); | |
229 | } | |
230 | ||
4c63da97 | 231 | int |
dbe2df79 | 232 | elf_s_get_other (symbolS *sym) |
4c63da97 AM |
233 | { |
234 | return elf_symbol (symbol_get_bfdsym (sym))->internal_elf_sym.st_other; | |
235 | } | |
236 | ||
5110c57e | 237 | static void |
dbe2df79 | 238 | elf_s_set_other (symbolS *sym, int other) |
5110c57e HPN |
239 | { |
240 | S_SET_OTHER (sym, other); | |
241 | } | |
242 | ||
252b5132 | 243 | static int |
dbe2df79 | 244 | elf_sec_sym_ok_for_reloc (asection *sec) |
252b5132 RH |
245 | { |
246 | return obj_sec_sym_ok_for_reloc (sec); | |
247 | } | |
248 | ||
249 | void | |
c04f5787 | 250 | elf_file_symbol (const char *s, int appfile) |
252b5132 | 251 | { |
c04f5787 AM |
252 | if (!appfile |
253 | || symbol_rootP == NULL | |
254 | || symbol_rootP->bsym == NULL | |
255 | || (symbol_rootP->bsym->flags & BSF_FILE) == 0) | |
256 | { | |
257 | symbolS *sym; | |
252b5132 | 258 | |
c04f5787 AM |
259 | sym = symbol_new (s, absolute_section, 0, NULL); |
260 | symbol_set_frag (sym, &zero_address_frag); | |
261 | symbol_get_bfdsym (sym)->flags |= BSF_FILE; | |
252b5132 | 262 | |
c04f5787 AM |
263 | if (symbol_rootP != sym) |
264 | { | |
265 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); | |
266 | symbol_insert (sym, symbol_rootP, &symbol_rootP, &symbol_lastP); | |
252b5132 | 267 | #ifdef DEBUG |
c04f5787 | 268 | verify_symbol_chain (symbol_rootP, symbol_lastP); |
252b5132 | 269 | #endif |
c04f5787 | 270 | } |
252b5132 RH |
271 | } |
272 | ||
273 | #ifdef NEED_ECOFF_DEBUG | |
f17c130b | 274 | ecoff_new_file (s, appfile); |
252b5132 RH |
275 | #endif |
276 | } | |
277 | ||
e13bab5a AM |
278 | /* Called from read.c:s_comm after we've parsed .comm symbol, size. |
279 | Parse a possible alignment value. */ | |
280 | ||
3b22753a | 281 | symbolS * |
e13bab5a | 282 | elf_common_parse (int ignore ATTRIBUTE_UNUSED, symbolS *symbolP, addressT size) |
252b5132 | 283 | { |
e13bab5a AM |
284 | addressT align = 0; |
285 | int is_local = symbol_get_obj (symbolP)->local; | |
252b5132 | 286 | |
e13bab5a | 287 | if (*input_line_pointer == ',') |
9be1cda6 | 288 | { |
e13bab5a | 289 | char *save = input_line_pointer; |
9be1cda6 | 290 | |
252b5132 RH |
291 | input_line_pointer++; |
292 | SKIP_WHITESPACE (); | |
e13bab5a AM |
293 | |
294 | if (*input_line_pointer == '"') | |
252b5132 | 295 | { |
e13bab5a AM |
296 | /* For sparc. Accept .common symbol, length, "bss" */ |
297 | input_line_pointer++; | |
298 | /* Some use the dot, some don't. */ | |
299 | if (*input_line_pointer == '.') | |
300 | input_line_pointer++; | |
301 | /* Some say data, some say bss. */ | |
302 | if (strncmp (input_line_pointer, "bss\"", 4) == 0) | |
303 | input_line_pointer += 4; | |
304 | else if (strncmp (input_line_pointer, "data\"", 5) == 0) | |
305 | input_line_pointer += 5; | |
306 | else | |
252b5132 | 307 | { |
e13bab5a AM |
308 | char *p = input_line_pointer; |
309 | char c; | |
310 | ||
311 | while (*--p != '"') | |
312 | ; | |
313 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
314 | if (*input_line_pointer++ == '"') | |
315 | break; | |
316 | c = *input_line_pointer; | |
317 | *input_line_pointer = '\0'; | |
318 | as_bad (_("bad .common segment %s"), p); | |
319 | *input_line_pointer = c; | |
320 | ignore_rest_of_line (); | |
321 | return NULL; | |
252b5132 | 322 | } |
e13bab5a AM |
323 | /* ??? Don't ask me why these are always global. */ |
324 | is_local = 0; | |
252b5132 RH |
325 | } |
326 | else | |
327 | { | |
e13bab5a AM |
328 | input_line_pointer = save; |
329 | align = parse_align (is_local); | |
330 | if (align == (addressT) -1) | |
331 | return NULL; | |
252b5132 RH |
332 | } |
333 | } | |
e13bab5a AM |
334 | |
335 | if (is_local) | |
336 | { | |
337 | bss_alloc (symbolP, size, align); | |
338 | S_CLEAR_EXTERNAL (symbolP); | |
339 | } | |
252b5132 RH |
340 | else |
341 | { | |
e13bab5a AM |
342 | S_SET_VALUE (symbolP, size); |
343 | S_SET_ALIGN (symbolP, align); | |
344 | S_SET_EXTERNAL (symbolP); | |
3b22753a | 345 | S_SET_SEGMENT (symbolP, elf_com_section_ptr); |
252b5132 RH |
346 | } |
347 | ||
49309057 | 348 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; |
252b5132 | 349 | |
13ae64f3 | 350 | return symbolP; |
252b5132 RH |
351 | } |
352 | ||
13ae64f3 | 353 | void |
dbe2df79 | 354 | obj_elf_common (int is_common) |
13ae64f3 | 355 | { |
e13bab5a AM |
356 | if (flag_mri && is_common) |
357 | s_mri_common (0); | |
358 | else | |
359 | s_comm_internal (0, elf_common_parse); | |
13ae64f3 JJ |
360 | } |
361 | ||
362 | static void | |
dbe2df79 | 363 | obj_elf_tls_common (int ignore ATTRIBUTE_UNUSED) |
13ae64f3 | 364 | { |
e13bab5a | 365 | symbolS *symbolP = s_comm_internal (0, elf_common_parse); |
13ae64f3 JJ |
366 | |
367 | if (symbolP) | |
368 | symbol_get_bfdsym (symbolP)->flags |= BSF_THREAD_LOCAL; | |
369 | } | |
370 | ||
13c56984 AM |
371 | static void |
372 | obj_elf_lcomm (int ignore ATTRIBUTE_UNUSED) | |
373 | { | |
374 | symbolS *symbolP = s_comm_internal (0, s_lcomm_internal); | |
375 | ||
376 | if (symbolP) | |
377 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; | |
378 | } | |
379 | ||
252b5132 | 380 | static void |
dbe2df79 | 381 | obj_elf_local (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
382 | { |
383 | char *name; | |
384 | int c; | |
385 | symbolS *symbolP; | |
386 | ||
387 | do | |
388 | { | |
389 | name = input_line_pointer; | |
390 | c = get_symbol_end (); | |
391 | symbolP = symbol_find_or_make (name); | |
392 | *input_line_pointer = c; | |
393 | SKIP_WHITESPACE (); | |
394 | S_CLEAR_EXTERNAL (symbolP); | |
49309057 | 395 | symbol_get_obj (symbolP)->local = 1; |
252b5132 RH |
396 | if (c == ',') |
397 | { | |
398 | input_line_pointer++; | |
399 | SKIP_WHITESPACE (); | |
400 | if (*input_line_pointer == '\n') | |
401 | c = '\n'; | |
402 | } | |
403 | } | |
404 | while (c == ','); | |
405 | demand_empty_rest_of_line (); | |
406 | } | |
407 | ||
408 | static void | |
dbe2df79 | 409 | obj_elf_weak (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
410 | { |
411 | char *name; | |
412 | int c; | |
413 | symbolS *symbolP; | |
414 | ||
415 | do | |
416 | { | |
417 | name = input_line_pointer; | |
418 | c = get_symbol_end (); | |
419 | symbolP = symbol_find_or_make (name); | |
420 | *input_line_pointer = c; | |
421 | SKIP_WHITESPACE (); | |
422 | S_SET_WEAK (symbolP); | |
49309057 | 423 | symbol_get_obj (symbolP)->local = 1; |
252b5132 RH |
424 | if (c == ',') |
425 | { | |
426 | input_line_pointer++; | |
427 | SKIP_WHITESPACE (); | |
428 | if (*input_line_pointer == '\n') | |
429 | c = '\n'; | |
430 | } | |
431 | } | |
432 | while (c == ','); | |
433 | demand_empty_rest_of_line (); | |
434 | } | |
435 | ||
2e13b764 | 436 | static void |
dbe2df79 | 437 | obj_elf_visibility (int visibility) |
2e13b764 NC |
438 | { |
439 | char *name; | |
440 | int c; | |
441 | symbolS *symbolP; | |
442 | asymbol *bfdsym; | |
443 | elf_symbol_type *elfsym; | |
444 | ||
445 | do | |
446 | { | |
447 | name = input_line_pointer; | |
448 | c = get_symbol_end (); | |
449 | symbolP = symbol_find_or_make (name); | |
450 | *input_line_pointer = c; | |
fa306131 | 451 | |
2e13b764 | 452 | SKIP_WHITESPACE (); |
fa306131 | 453 | |
2e13b764 NC |
454 | bfdsym = symbol_get_bfdsym (symbolP); |
455 | elfsym = elf_symbol_from (bfd_asymbol_bfd (bfdsym), bfdsym); | |
fa306131 | 456 | |
2e13b764 | 457 | assert (elfsym); |
fa306131 | 458 | |
20e420c2 RH |
459 | elfsym->internal_elf_sym.st_other &= ~3; |
460 | elfsym->internal_elf_sym.st_other |= visibility; | |
fa306131 | 461 | |
2e13b764 NC |
462 | if (c == ',') |
463 | { | |
464 | input_line_pointer ++; | |
fa306131 | 465 | |
2e13b764 | 466 | SKIP_WHITESPACE (); |
fa306131 | 467 | |
2e13b764 NC |
468 | if (*input_line_pointer == '\n') |
469 | c = '\n'; | |
470 | } | |
471 | } | |
472 | while (c == ','); | |
fa306131 | 473 | |
2e13b764 NC |
474 | demand_empty_rest_of_line (); |
475 | } | |
476 | ||
252b5132 RH |
477 | static segT previous_section; |
478 | static int previous_subsection; | |
479 | ||
9de8d8f1 RH |
480 | struct section_stack |
481 | { | |
482 | struct section_stack *next; | |
483 | segT seg, prev_seg; | |
484 | int subseg, prev_subseg; | |
485 | }; | |
486 | ||
487 | static struct section_stack *section_stack; | |
488 | ||
fafe6678 | 489 | static bfd_boolean |
86654c12 L |
490 | get_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *inf) |
491 | { | |
fafe6678 | 492 | const char *gname = inf; |
86654c12 L |
493 | const char *group_name = elf_group_name (sec); |
494 | ||
fafe6678 | 495 | return (group_name == gname |
86654c12 | 496 | || (group_name != NULL |
fafe6678 L |
497 | && gname != NULL |
498 | && strcmp (group_name, gname) == 0)); | |
86654c12 L |
499 | } |
500 | ||
252b5132 RH |
501 | /* Handle the .section pseudo-op. This code supports two different |
502 | syntaxes. | |
503 | ||
504 | The first is found on Solaris, and looks like | |
505 | .section ".sec1",#alloc,#execinstr,#write | |
506 | Here the names after '#' are the SHF_* flags to turn on for the | |
507 | section. I'm not sure how it determines the SHT_* type (BFD | |
508 | doesn't really give us control over the type, anyhow). | |
509 | ||
510 | The second format is found on UnixWare, and probably most SVR4 | |
511 | machines, and looks like | |
512 | .section .sec1,"a",@progbits | |
513 | The quoted string may contain any combination of a, w, x, and | |
514 | represents the SHF_* flags to turn on for the section. The string | |
515 | beginning with '@' can be progbits or nobits. There should be | |
516 | other possibilities, but I don't know what they are. In any case, | |
517 | BFD doesn't really let us set the section type. */ | |
518 | ||
cca86cc8 | 519 | void |
dbe2df79 AM |
520 | obj_elf_change_section (const char *name, |
521 | int type, | |
522 | int attr, | |
523 | int entsize, | |
524 | const char *group_name, | |
525 | int linkonce, | |
526 | int push) | |
252b5132 | 527 | { |
fafe6678 | 528 | asection *old_sec; |
252b5132 | 529 | segT sec; |
742f45cf | 530 | flagword flags; |
551b43fd | 531 | const struct elf_backend_data *bed; |
f61e8019 | 532 | const struct bfd_elf_special_section *ssect; |
252b5132 RH |
533 | |
534 | #ifdef md_flush_pending_output | |
535 | md_flush_pending_output (); | |
536 | #endif | |
537 | ||
9de8d8f1 RH |
538 | /* Switch to the section, creating it if necessary. */ |
539 | if (push) | |
540 | { | |
541 | struct section_stack *elt; | |
542 | elt = xmalloc (sizeof (struct section_stack)); | |
543 | elt->next = section_stack; | |
544 | elt->seg = now_seg; | |
545 | elt->prev_seg = previous_section; | |
546 | elt->subseg = now_subseg; | |
547 | elt->prev_subseg = previous_subsection; | |
548 | section_stack = elt; | |
549 | } | |
550 | previous_section = now_seg; | |
551 | previous_subsection = now_subseg; | |
552 | ||
fafe6678 L |
553 | old_sec = bfd_get_section_by_name_if (stdoutput, name, get_section, |
554 | (void *) group_name); | |
555 | if (old_sec) | |
86654c12 | 556 | { |
fafe6678 | 557 | sec = old_sec; |
86654c12 L |
558 | subseg_set (sec, 0); |
559 | } | |
560 | else | |
561 | sec = subseg_force_new (name, 0); | |
562 | ||
551b43fd AM |
563 | bed = get_elf_backend_data (stdoutput); |
564 | ssect = (*bed->get_sec_type_attr) (stdoutput, sec); | |
9de8d8f1 | 565 | |
f61e8019 | 566 | if (ssect != NULL) |
2f89ff8d | 567 | { |
ea8f8eab L |
568 | bfd_boolean override = FALSE; |
569 | ||
2f89ff8d | 570 | if (type == SHT_NULL) |
f61e8019 AM |
571 | type = ssect->type; |
572 | else if (type != ssect->type) | |
2f89ff8d | 573 | { |
fafe6678 | 574 | if (old_sec == NULL |
2f89ff8d | 575 | /* FIXME: gcc, as of 2002-10-22, will emit |
7ed1d346 | 576 | |
2f89ff8d | 577 | .section .init_array,"aw",@progbits |
7ed1d346 | 578 | |
2f89ff8d | 579 | for __attribute__ ((section (".init_array"))). |
3b22753a L |
580 | "@progbits" is incorrect. Also for x86-64 large bss |
581 | sections, gcc, as of 2005-07-06, will emit | |
582 | ||
583 | .section .lbss,"aw",@progbits | |
584 | ||
2f89ff8d | 585 | "@progbits" is incorrect. */ |
3b22753a L |
586 | #ifdef TC_I386 |
587 | && (bed->s->arch_size != 64 | |
588 | || !(ssect->attr & SHF_X86_64_LARGE)) | |
589 | #endif | |
f61e8019 AM |
590 | && ssect->type != SHT_INIT_ARRAY |
591 | && ssect->type != SHT_FINI_ARRAY | |
592 | && ssect->type != SHT_PREINIT_ARRAY) | |
2f89ff8d L |
593 | { |
594 | /* We allow to specify any type for a .note section. */ | |
f61e8019 | 595 | if (ssect->type != SHT_NOTE) |
2f89ff8d L |
596 | as_warn (_("setting incorrect section type for %s"), |
597 | name); | |
598 | } | |
599 | else | |
600 | { | |
601 | as_warn (_("ignoring incorrect section type for %s"), | |
742f45cf | 602 | name); |
f61e8019 | 603 | type = ssect->type; |
2f89ff8d L |
604 | } |
605 | } | |
606 | ||
fafe6678 | 607 | if (old_sec == NULL && (attr & ~ssect->attr) != 0) |
2f89ff8d L |
608 | { |
609 | /* As a GNU extension, we permit a .note section to be | |
f61e8019 | 610 | allocatable. If the linker sees an allocatable .note |
2f89ff8d | 611 | section, it will create a PT_NOTE segment in the output |
92191b29 | 612 | file. We also allow "x" for .note.GNU-stack. */ |
f61e8019 AM |
613 | if (ssect->type == SHT_NOTE |
614 | && (attr == SHF_ALLOC || attr == SHF_EXECINSTR)) | |
615 | ; | |
616 | /* Allow different SHF_MERGE and SHF_STRINGS if we have | |
617 | something like .rodata.str. */ | |
618 | else if (ssect->suffix_length == -2 | |
619 | && name[ssect->prefix_length] == '.' | |
ea8f8eab L |
620 | && (attr |
621 | & ~ssect->attr | |
622 | & ~SHF_MERGE | |
623 | & ~SHF_STRINGS) == 0) | |
f61e8019 | 624 | ; |
ea8f8eab L |
625 | /* .interp, .strtab and .symtab can have SHF_ALLOC. */ |
626 | else if (attr == SHF_ALLOC | |
627 | && (strcmp (name, ".interp") == 0 | |
628 | || strcmp (name, ".strtab") == 0 | |
629 | || strcmp (name, ".symtab") == 0)) | |
630 | override = TRUE; | |
b9f18452 L |
631 | /* .note.GNU-stack can have SHF_EXECINSTR. */ |
632 | else if (attr == SHF_EXECINSTR | |
633 | && strcmp (name, ".note.GNU-stack") == 0) | |
634 | override = TRUE; | |
f61e8019 | 635 | else |
ea8f8eab | 636 | { |
86654c12 L |
637 | if (group_name == NULL) |
638 | as_warn (_("setting incorrect section attributes for %s"), | |
639 | name); | |
ea8f8eab L |
640 | override = TRUE; |
641 | } | |
2f89ff8d | 642 | } |
fafe6678 | 643 | if (!override && old_sec == NULL) |
f61e8019 | 644 | attr |= ssect->attr; |
2f89ff8d | 645 | } |
742f45cf AM |
646 | |
647 | /* Convert ELF type and flags to BFD flags. */ | |
648 | flags = (SEC_RELOC | |
649 | | ((attr & SHF_WRITE) ? 0 : SEC_READONLY) | |
650 | | ((attr & SHF_ALLOC) ? SEC_ALLOC : 0) | |
651 | | (((attr & SHF_ALLOC) && type != SHT_NOBITS) ? SEC_LOAD : 0) | |
f5fa8ca2 JJ |
652 | | ((attr & SHF_EXECINSTR) ? SEC_CODE : 0) |
653 | | ((attr & SHF_MERGE) ? SEC_MERGE : 0) | |
13ae64f3 JJ |
654 | | ((attr & SHF_STRINGS) ? SEC_STRINGS : 0) |
655 | | ((attr & SHF_TLS) ? SEC_THREAD_LOCAL : 0)); | |
9de8d8f1 | 656 | #ifdef md_elf_section_flags |
742f45cf | 657 | flags = md_elf_section_flags (flags, attr, type); |
9de8d8f1 RH |
658 | #endif |
659 | ||
86654c12 L |
660 | if (linkonce) |
661 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
662 | ||
fafe6678 | 663 | if (old_sec == NULL) |
742f45cf AM |
664 | { |
665 | symbolS *secsym; | |
666 | ||
7a6d0b32 JB |
667 | elf_section_type (sec) = type; |
668 | elf_section_flags (sec) = attr; | |
669 | ||
9de8d8f1 RH |
670 | /* Prevent SEC_HAS_CONTENTS from being inadvertently set. */ |
671 | if (type == SHT_NOBITS) | |
13c56984 | 672 | seg_info (sec)->bss = 1; |
9de8d8f1 RH |
673 | |
674 | bfd_set_section_flags (stdoutput, sec, flags); | |
f5fa8ca2 JJ |
675 | if (flags & SEC_MERGE) |
676 | sec->entsize = entsize; | |
aa1f4858 | 677 | elf_group_name (sec) = group_name; |
9de8d8f1 RH |
678 | |
679 | /* Add a symbol for this section to the symbol table. */ | |
680 | secsym = symbol_find (name); | |
681 | if (secsym != NULL) | |
682 | symbol_set_bfdsym (secsym, sec->symbol); | |
683 | else | |
13c56984 | 684 | symbol_table_insert (section_symbol (sec)); |
9de8d8f1 | 685 | } |
7a6d0b32 | 686 | else |
742f45cf | 687 | { |
7a6d0b32 JB |
688 | if (type != SHT_NULL |
689 | && (unsigned) type != elf_section_type (old_sec)) | |
690 | as_warn (_("ignoring changed section type for %s"), name); | |
691 | ||
692 | if (attr != 0) | |
693 | { | |
694 | /* If section attributes are specified the second time we see a | |
695 | particular section, then check that they are the same as we | |
696 | saw the first time. */ | |
697 | if (((old_sec->flags ^ flags) | |
698 | & (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE | |
699 | | SEC_EXCLUDE | SEC_SORT_ENTRIES | SEC_MERGE | SEC_STRINGS | |
700 | | SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD | |
701 | | SEC_THREAD_LOCAL))) | |
702 | as_warn (_("ignoring changed section attributes for %s"), name); | |
703 | if ((flags & SEC_MERGE) && old_sec->entsize != (unsigned) entsize) | |
704 | as_warn (_("ignoring changed section entity size for %s"), name); | |
705 | } | |
742f45cf | 706 | } |
9de8d8f1 RH |
707 | |
708 | #ifdef md_elf_section_change_hook | |
742f45cf | 709 | md_elf_section_change_hook (); |
9de8d8f1 RH |
710 | #endif |
711 | } | |
712 | ||
8d28c9d7 | 713 | static int |
dbe2df79 | 714 | obj_elf_parse_section_letters (char *str, size_t len) |
9de8d8f1 RH |
715 | { |
716 | int attr = 0; | |
717 | ||
718 | while (len > 0) | |
719 | { | |
720 | switch (*str) | |
721 | { | |
722 | case 'a': | |
723 | attr |= SHF_ALLOC; | |
724 | break; | |
725 | case 'w': | |
726 | attr |= SHF_WRITE; | |
727 | break; | |
728 | case 'x': | |
729 | attr |= SHF_EXECINSTR; | |
730 | break; | |
9469ddf0 | 731 | case 'M': |
f5fa8ca2 JJ |
732 | attr |= SHF_MERGE; |
733 | break; | |
9469ddf0 | 734 | case 'S': |
f5fa8ca2 JJ |
735 | attr |= SHF_STRINGS; |
736 | break; | |
060adf0e AM |
737 | case 'G': |
738 | attr |= SHF_GROUP; | |
739 | break; | |
13ae64f3 JJ |
740 | case 'T': |
741 | attr |= SHF_TLS; | |
742 | break; | |
34105363 L |
743 | /* Compatibility. */ |
744 | case 'm': | |
745 | if (*(str - 1) == 'a') | |
746 | { | |
747 | attr |= SHF_MERGE; | |
748 | if (len > 1 && str[1] == 's') | |
749 | { | |
750 | attr |= SHF_STRINGS; | |
751 | str++, len--; | |
752 | } | |
753 | break; | |
754 | } | |
9de8d8f1 RH |
755 | default: |
756 | { | |
13ae64f3 | 757 | char *bad_msg = _("unrecognized .section attribute: want a,w,x,M,S,G,T"); |
9de8d8f1 RH |
758 | #ifdef md_elf_section_letter |
759 | int md_attr = md_elf_section_letter (*str, &bad_msg); | |
760 | if (md_attr >= 0) | |
761 | attr |= md_attr; | |
762 | else | |
763 | #endif | |
711ef82f | 764 | as_fatal ("%s", bad_msg); |
9de8d8f1 RH |
765 | } |
766 | break; | |
767 | } | |
768 | str++, len--; | |
769 | } | |
770 | ||
771 | return attr; | |
772 | } | |
773 | ||
8d28c9d7 | 774 | static int |
dbe2df79 | 775 | obj_elf_section_word (char *str, size_t len) |
9de8d8f1 RH |
776 | { |
777 | if (len == 5 && strncmp (str, "write", 5) == 0) | |
778 | return SHF_WRITE; | |
779 | if (len == 5 && strncmp (str, "alloc", 5) == 0) | |
780 | return SHF_ALLOC; | |
781 | if (len == 9 && strncmp (str, "execinstr", 9) == 0) | |
782 | return SHF_EXECINSTR; | |
b9734f35 JJ |
783 | if (len == 3 && strncmp (str, "tls", 3) == 0) |
784 | return SHF_TLS; | |
9de8d8f1 RH |
785 | |
786 | #ifdef md_elf_section_word | |
787 | { | |
788 | int md_attr = md_elf_section_word (str, len); | |
789 | if (md_attr >= 0) | |
790 | return md_attr; | |
791 | } | |
792 | #endif | |
793 | ||
6ce8b369 | 794 | as_warn (_("unrecognized section attribute")); |
9de8d8f1 RH |
795 | return 0; |
796 | } | |
797 | ||
8d28c9d7 | 798 | static int |
dbe2df79 | 799 | obj_elf_section_type (char *str, size_t len) |
9de8d8f1 RH |
800 | { |
801 | if (len == 8 && strncmp (str, "progbits", 8) == 0) | |
802 | return SHT_PROGBITS; | |
803 | if (len == 6 && strncmp (str, "nobits", 6) == 0) | |
804 | return SHT_NOBITS; | |
34f70875 L |
805 | if (len == 4 && strncmp (str, "note", 4) == 0) |
806 | return SHT_NOTE; | |
10b016c2 PB |
807 | if (len == 10 && strncmp (str, "init_array", 10) == 0) |
808 | return SHT_INIT_ARRAY; | |
809 | if (len == 10 && strncmp (str, "fini_array", 10) == 0) | |
810 | return SHT_FINI_ARRAY; | |
811 | if (len == 13 && strncmp (str, "preinit_array", 13) == 0) | |
812 | return SHT_PREINIT_ARRAY; | |
9de8d8f1 RH |
813 | |
814 | #ifdef md_elf_section_type | |
815 | { | |
816 | int md_type = md_elf_section_type (str, len); | |
817 | if (md_type >= 0) | |
818 | return md_type; | |
819 | } | |
820 | #endif | |
821 | ||
6ce8b369 | 822 | as_warn (_("unrecognized section type")); |
9de8d8f1 RH |
823 | return 0; |
824 | } | |
825 | ||
6ce8b369 AM |
826 | /* Get name of section. */ |
827 | static char * | |
dbe2df79 | 828 | obj_elf_section_name (void) |
6ce8b369 AM |
829 | { |
830 | char *name; | |
831 | ||
832 | SKIP_WHITESPACE (); | |
833 | if (*input_line_pointer == '"') | |
834 | { | |
835 | int dummy; | |
836 | ||
837 | name = demand_copy_C_string (&dummy); | |
838 | if (name == NULL) | |
839 | { | |
840 | ignore_rest_of_line (); | |
841 | return NULL; | |
842 | } | |
843 | } | |
844 | else | |
845 | { | |
846 | char *end = input_line_pointer; | |
847 | ||
848 | while (0 == strchr ("\n\t,; ", *end)) | |
849 | end++; | |
850 | if (end == input_line_pointer) | |
851 | { | |
c95b35a9 | 852 | as_bad (_("missing name")); |
6ce8b369 AM |
853 | ignore_rest_of_line (); |
854 | return NULL; | |
855 | } | |
856 | ||
857 | name = xmalloc (end - input_line_pointer + 1); | |
858 | memcpy (name, input_line_pointer, end - input_line_pointer); | |
859 | name[end - input_line_pointer] = '\0'; | |
612d7b83 L |
860 | #ifdef tc_canonicalize_section_name |
861 | name = tc_canonicalize_section_name (name); | |
862 | #endif | |
6ce8b369 AM |
863 | input_line_pointer = end; |
864 | } | |
865 | SKIP_WHITESPACE (); | |
866 | return name; | |
867 | } | |
868 | ||
9de8d8f1 | 869 | void |
dbe2df79 | 870 | obj_elf_section (int push) |
9de8d8f1 | 871 | { |
aa1f4858 | 872 | char *name, *group_name, *beg; |
9de8d8f1 | 873 | int type, attr, dummy; |
f5fa8ca2 | 874 | int entsize; |
d2dab548 | 875 | int linkonce; |
9de8d8f1 | 876 | |
5b93d8bb | 877 | #ifndef TC_I370 |
252b5132 RH |
878 | if (flag_mri) |
879 | { | |
880 | char mri_type; | |
881 | ||
9de8d8f1 | 882 | #ifdef md_flush_pending_output |
60bcf0fa | 883 | md_flush_pending_output (); |
9de8d8f1 RH |
884 | #endif |
885 | ||
252b5132 RH |
886 | previous_section = now_seg; |
887 | previous_subsection = now_subseg; | |
888 | ||
889 | s_mri_sect (&mri_type); | |
890 | ||
891 | #ifdef md_elf_section_change_hook | |
892 | md_elf_section_change_hook (); | |
893 | #endif | |
894 | ||
895 | return; | |
896 | } | |
5b93d8bb | 897 | #endif /* ! defined (TC_I370) */ |
252b5132 | 898 | |
6ce8b369 AM |
899 | name = obj_elf_section_name (); |
900 | if (name == NULL) | |
901 | return; | |
252b5132 RH |
902 | type = SHT_NULL; |
903 | attr = 0; | |
aa1f4858 | 904 | group_name = NULL; |
f5fa8ca2 | 905 | entsize = 0; |
d2dab548 | 906 | linkonce = 0; |
252b5132 RH |
907 | |
908 | if (*input_line_pointer == ',') | |
909 | { | |
910 | /* Skip the comma. */ | |
911 | ++input_line_pointer; | |
252b5132 RH |
912 | SKIP_WHITESPACE (); |
913 | ||
914 | if (*input_line_pointer == '"') | |
915 | { | |
9de8d8f1 RH |
916 | beg = demand_copy_C_string (&dummy); |
917 | if (beg == NULL) | |
252b5132 | 918 | { |
9de8d8f1 RH |
919 | ignore_rest_of_line (); |
920 | return; | |
252b5132 | 921 | } |
9de8d8f1 | 922 | attr |= obj_elf_parse_section_letters (beg, strlen (beg)); |
252b5132 RH |
923 | |
924 | SKIP_WHITESPACE (); | |
925 | if (*input_line_pointer == ',') | |
926 | { | |
9de8d8f1 | 927 | char c; |
060adf0e AM |
928 | char *save = input_line_pointer; |
929 | ||
252b5132 RH |
930 | ++input_line_pointer; |
931 | SKIP_WHITESPACE (); | |
9de8d8f1 RH |
932 | c = *input_line_pointer; |
933 | if (c == '"') | |
252b5132 | 934 | { |
9de8d8f1 RH |
935 | beg = demand_copy_C_string (&dummy); |
936 | if (beg == NULL) | |
252b5132 | 937 | { |
9de8d8f1 RH |
938 | ignore_rest_of_line (); |
939 | return; | |
252b5132 | 940 | } |
9de8d8f1 | 941 | type = obj_elf_section_type (beg, strlen (beg)); |
9de8d8f1 RH |
942 | } |
943 | else if (c == '@' || c == '%') | |
944 | { | |
945 | beg = ++input_line_pointer; | |
946 | c = get_symbol_end (); | |
947 | *input_line_pointer = c; | |
948 | type = obj_elf_section_type (beg, input_line_pointer - beg); | |
252b5132 | 949 | } |
060adf0e AM |
950 | else |
951 | input_line_pointer = save; | |
252b5132 | 952 | } |
f5fa8ca2 JJ |
953 | |
954 | SKIP_WHITESPACE (); | |
6ce8b369 | 955 | if ((attr & SHF_MERGE) != 0 && *input_line_pointer == ',') |
f5fa8ca2 JJ |
956 | { |
957 | ++input_line_pointer; | |
958 | SKIP_WHITESPACE (); | |
959 | entsize = get_absolute_expression (); | |
6ce8b369 | 960 | SKIP_WHITESPACE (); |
f5fa8ca2 JJ |
961 | if (entsize < 0) |
962 | { | |
6ce8b369 | 963 | as_warn (_("invalid merge entity size")); |
f5fa8ca2 JJ |
964 | attr &= ~SHF_MERGE; |
965 | entsize = 0; | |
966 | } | |
967 | } | |
6ce8b369 AM |
968 | else if ((attr & SHF_MERGE) != 0) |
969 | { | |
970 | as_warn (_("entity size for SHF_MERGE not specified")); | |
971 | attr &= ~SHF_MERGE; | |
972 | } | |
060adf0e AM |
973 | |
974 | if ((attr & SHF_GROUP) != 0 && *input_line_pointer == ',') | |
975 | { | |
976 | ++input_line_pointer; | |
aa1f4858 AM |
977 | group_name = obj_elf_section_name (); |
978 | if (group_name == NULL) | |
060adf0e | 979 | attr &= ~SHF_GROUP; |
d2dab548 AM |
980 | else if (strncmp (input_line_pointer, ",comdat", 7) == 0) |
981 | { | |
982 | input_line_pointer += 7; | |
983 | linkonce = 1; | |
984 | } | |
985 | else if (strncmp (name, ".gnu.linkonce", 13) == 0) | |
986 | linkonce = 1; | |
060adf0e AM |
987 | } |
988 | else if ((attr & SHF_GROUP) != 0) | |
989 | { | |
990 | as_warn (_("group name for SHF_GROUP not specified")); | |
991 | attr &= ~SHF_GROUP; | |
992 | } | |
252b5132 RH |
993 | } |
994 | else | |
995 | { | |
996 | do | |
997 | { | |
9de8d8f1 RH |
998 | char c; |
999 | ||
252b5132 RH |
1000 | SKIP_WHITESPACE (); |
1001 | if (*input_line_pointer != '#') | |
1002 | { | |
c95b35a9 | 1003 | as_bad (_("character following name is not '#'")); |
252b5132 RH |
1004 | ignore_rest_of_line (); |
1005 | return; | |
1006 | } | |
9de8d8f1 RH |
1007 | beg = ++input_line_pointer; |
1008 | c = get_symbol_end (); | |
1009 | *input_line_pointer = c; | |
1010 | ||
1011 | attr |= obj_elf_section_word (beg, input_line_pointer - beg); | |
1012 | ||
252b5132 RH |
1013 | SKIP_WHITESPACE (); |
1014 | } | |
1015 | while (*input_line_pointer++ == ','); | |
1016 | --input_line_pointer; | |
1017 | } | |
1018 | } | |
1019 | ||
252b5132 | 1020 | demand_empty_rest_of_line (); |
9de8d8f1 | 1021 | |
d2dab548 | 1022 | obj_elf_change_section (name, type, attr, entsize, group_name, linkonce, push); |
252b5132 RH |
1023 | } |
1024 | ||
1025 | /* Change to the .data section. */ | |
1026 | ||
16b93d88 | 1027 | void |
dbe2df79 | 1028 | obj_elf_data (int i) |
252b5132 RH |
1029 | { |
1030 | #ifdef md_flush_pending_output | |
1031 | md_flush_pending_output (); | |
1032 | #endif | |
1033 | ||
1034 | previous_section = now_seg; | |
1035 | previous_subsection = now_subseg; | |
1036 | s_data (i); | |
1037 | ||
1038 | #ifdef md_elf_section_change_hook | |
1039 | md_elf_section_change_hook (); | |
1040 | #endif | |
1041 | } | |
1042 | ||
1043 | /* Change to the .text section. */ | |
1044 | ||
16b93d88 | 1045 | void |
dbe2df79 | 1046 | obj_elf_text (int i) |
252b5132 RH |
1047 | { |
1048 | #ifdef md_flush_pending_output | |
1049 | md_flush_pending_output (); | |
1050 | #endif | |
1051 | ||
1052 | previous_section = now_seg; | |
1053 | previous_subsection = now_subseg; | |
1054 | s_text (i); | |
1055 | ||
1056 | #ifdef md_elf_section_change_hook | |
1057 | md_elf_section_change_hook (); | |
1058 | #endif | |
1059 | } | |
1060 | ||
8fe53b44 JB |
1061 | /* Change to the *ABS* section. */ |
1062 | ||
1063 | void | |
1064 | obj_elf_struct (int i) | |
1065 | { | |
1066 | #ifdef md_flush_pending_output | |
1067 | md_flush_pending_output (); | |
1068 | #endif | |
1069 | ||
1070 | previous_section = now_seg; | |
1071 | previous_subsection = now_subseg; | |
1072 | s_struct (i); | |
1073 | ||
1074 | #ifdef md_elf_section_change_hook | |
1075 | md_elf_section_change_hook (); | |
1076 | #endif | |
1077 | } | |
1078 | ||
252b5132 | 1079 | static void |
dbe2df79 | 1080 | obj_elf_subsection (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1081 | { |
1082 | register int temp; | |
1083 | ||
1084 | #ifdef md_flush_pending_output | |
1085 | md_flush_pending_output (); | |
1086 | #endif | |
1087 | ||
1088 | previous_section = now_seg; | |
1089 | previous_subsection = now_subseg; | |
1090 | ||
1091 | temp = get_absolute_expression (); | |
1092 | subseg_set (now_seg, (subsegT) temp); | |
1093 | demand_empty_rest_of_line (); | |
1094 | ||
1095 | #ifdef md_elf_section_change_hook | |
1096 | md_elf_section_change_hook (); | |
1097 | #endif | |
1098 | } | |
1099 | ||
1100 | /* This can be called from the processor backends if they change | |
1101 | sections. */ | |
1102 | ||
1103 | void | |
dbe2df79 | 1104 | obj_elf_section_change_hook (void) |
252b5132 RH |
1105 | { |
1106 | previous_section = now_seg; | |
1107 | previous_subsection = now_subseg; | |
1108 | } | |
1109 | ||
1110 | void | |
dbe2df79 | 1111 | obj_elf_previous (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1112 | { |
9de8d8f1 RH |
1113 | segT new_section; |
1114 | int new_subsection; | |
1115 | ||
252b5132 RH |
1116 | if (previous_section == 0) |
1117 | { | |
6ce8b369 | 1118 | as_warn (_(".previous without corresponding .section; ignored")); |
252b5132 RH |
1119 | return; |
1120 | } | |
1121 | ||
1122 | #ifdef md_flush_pending_output | |
1123 | md_flush_pending_output (); | |
1124 | #endif | |
1125 | ||
9de8d8f1 RH |
1126 | new_section = previous_section; |
1127 | new_subsection = previous_subsection; | |
1128 | previous_section = now_seg; | |
1129 | previous_subsection = now_subseg; | |
1130 | subseg_set (new_section, new_subsection); | |
1131 | ||
1132 | #ifdef md_elf_section_change_hook | |
1133 | md_elf_section_change_hook (); | |
1134 | #endif | |
1135 | } | |
1136 | ||
1137 | static void | |
dbe2df79 | 1138 | obj_elf_popsection (int xxx ATTRIBUTE_UNUSED) |
9de8d8f1 RH |
1139 | { |
1140 | struct section_stack *top = section_stack; | |
1141 | ||
1142 | if (top == NULL) | |
1143 | { | |
6ce8b369 | 1144 | as_warn (_(".popsection without corresponding .pushsection; ignored")); |
9de8d8f1 RH |
1145 | return; |
1146 | } | |
1147 | ||
1148 | #ifdef md_flush_pending_output | |
1149 | md_flush_pending_output (); | |
1150 | #endif | |
1151 | ||
1152 | section_stack = top->next; | |
1153 | previous_section = top->prev_seg; | |
1154 | previous_subsection = top->prev_subseg; | |
1155 | subseg_set (top->seg, top->subseg); | |
1156 | free (top); | |
252b5132 RH |
1157 | |
1158 | #ifdef md_elf_section_change_hook | |
1159 | md_elf_section_change_hook (); | |
1160 | #endif | |
1161 | } | |
1162 | ||
1163 | static void | |
dbe2df79 | 1164 | obj_elf_line (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1165 | { |
1166 | /* Assume delimiter is part of expression. BSD4.2 as fails with | |
bf514e21 | 1167 | delightful bug, so we are not being incompatible here. */ |
dbe2df79 | 1168 | new_logical_line (NULL, get_absolute_expression ()); |
252b5132 RH |
1169 | demand_empty_rest_of_line (); |
1170 | } | |
1171 | ||
1172 | /* This handles the .symver pseudo-op, which is used to specify a | |
1173 | symbol version. The syntax is ``.symver NAME,SYMVERNAME''. | |
1174 | SYMVERNAME may contain ELF_VER_CHR ('@') characters. This | |
1175 | pseudo-op causes the assembler to emit a symbol named SYMVERNAME | |
1176 | with the same value as the symbol NAME. */ | |
1177 | ||
1178 | static void | |
dbe2df79 | 1179 | obj_elf_symver (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1180 | { |
1181 | char *name; | |
1182 | char c; | |
468cced8 | 1183 | char old_lexat; |
252b5132 RH |
1184 | symbolS *sym; |
1185 | ||
1186 | name = input_line_pointer; | |
1187 | c = get_symbol_end (); | |
1188 | ||
1189 | sym = symbol_find_or_make (name); | |
1190 | ||
1191 | *input_line_pointer = c; | |
1192 | ||
252b5132 RH |
1193 | SKIP_WHITESPACE (); |
1194 | if (*input_line_pointer != ',') | |
1195 | { | |
1196 | as_bad (_("expected comma after name in .symver")); | |
1197 | ignore_rest_of_line (); | |
1198 | return; | |
1199 | } | |
1200 | ||
1201 | ++input_line_pointer; | |
eba874d8 | 1202 | SKIP_WHITESPACE (); |
252b5132 | 1203 | name = input_line_pointer; |
468cced8 AM |
1204 | |
1205 | /* Temporarily include '@' in symbol names. */ | |
1206 | old_lexat = lex_type[(unsigned char) '@']; | |
1207 | lex_type[(unsigned char) '@'] |= LEX_NAME; | |
1208 | c = get_symbol_end (); | |
1209 | lex_type[(unsigned char) '@'] = old_lexat; | |
252b5132 | 1210 | |
339681c0 L |
1211 | if (symbol_get_obj (sym)->versioned_name == NULL) |
1212 | { | |
1213 | symbol_get_obj (sym)->versioned_name = xstrdup (name); | |
252b5132 | 1214 | |
339681c0 | 1215 | *input_line_pointer = c; |
252b5132 | 1216 | |
6f620856 L |
1217 | if (strchr (symbol_get_obj (sym)->versioned_name, |
1218 | ELF_VER_CHR) == NULL) | |
339681c0 L |
1219 | { |
1220 | as_bad (_("missing version name in `%s' for symbol `%s'"), | |
1221 | symbol_get_obj (sym)->versioned_name, | |
1222 | S_GET_NAME (sym)); | |
1223 | ignore_rest_of_line (); | |
1224 | return; | |
1225 | } | |
1226 | } | |
1227 | else | |
252b5132 | 1228 | { |
339681c0 L |
1229 | if (strcmp (symbol_get_obj (sym)->versioned_name, name)) |
1230 | { | |
1231 | as_bad (_("multiple versions [`%s'|`%s'] for symbol `%s'"), | |
1232 | name, symbol_get_obj (sym)->versioned_name, | |
1233 | S_GET_NAME (sym)); | |
1234 | ignore_rest_of_line (); | |
1235 | return; | |
1236 | } | |
1237 | ||
1238 | *input_line_pointer = c; | |
252b5132 RH |
1239 | } |
1240 | ||
1241 | demand_empty_rest_of_line (); | |
1242 | } | |
1243 | ||
1244 | /* This handles the .vtable_inherit pseudo-op, which is used to indicate | |
1245 | to the linker the hierarchy in which a particular table resides. The | |
1246 | syntax is ".vtable_inherit CHILDNAME, PARENTNAME". */ | |
1247 | ||
904a31bf | 1248 | struct fix * |
dbe2df79 | 1249 | obj_elf_vtable_inherit (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1250 | { |
1251 | char *cname, *pname; | |
1252 | symbolS *csym, *psym; | |
1253 | char c, bad = 0; | |
1254 | ||
1255 | if (*input_line_pointer == '#') | |
1256 | ++input_line_pointer; | |
1257 | ||
1258 | cname = input_line_pointer; | |
1259 | c = get_symbol_end (); | |
1260 | csym = symbol_find (cname); | |
1261 | ||
1262 | /* GCFIXME: should check that we don't have two .vtable_inherits for | |
1263 | the same child symbol. Also, we can currently only do this if the | |
1264 | child symbol is already exists and is placed in a fragment. */ | |
1265 | ||
49309057 | 1266 | if (csym == NULL || symbol_get_frag (csym) == NULL) |
252b5132 RH |
1267 | { |
1268 | as_bad ("expected `%s' to have already been set for .vtable_inherit", | |
1269 | cname); | |
1270 | bad = 1; | |
1271 | } | |
1272 | ||
1273 | *input_line_pointer = c; | |
1274 | ||
1275 | SKIP_WHITESPACE (); | |
1276 | if (*input_line_pointer != ',') | |
1277 | { | |
1278 | as_bad ("expected comma after name in .vtable_inherit"); | |
1279 | ignore_rest_of_line (); | |
904a31bf | 1280 | return NULL; |
252b5132 RH |
1281 | } |
1282 | ||
1283 | ++input_line_pointer; | |
1284 | SKIP_WHITESPACE (); | |
1285 | ||
1286 | if (*input_line_pointer == '#') | |
1287 | ++input_line_pointer; | |
1288 | ||
1289 | if (input_line_pointer[0] == '0' | |
1290 | && (input_line_pointer[1] == '\0' | |
3882b010 | 1291 | || ISSPACE (input_line_pointer[1]))) |
252b5132 RH |
1292 | { |
1293 | psym = section_symbol (absolute_section); | |
1294 | ++input_line_pointer; | |
1295 | } | |
1296 | else | |
1297 | { | |
1298 | pname = input_line_pointer; | |
1299 | c = get_symbol_end (); | |
1300 | psym = symbol_find_or_make (pname); | |
1301 | *input_line_pointer = c; | |
1302 | } | |
1303 | ||
1304 | demand_empty_rest_of_line (); | |
1305 | ||
1306 | if (bad) | |
904a31bf | 1307 | return NULL; |
252b5132 | 1308 | |
49309057 | 1309 | assert (symbol_get_value_expression (csym)->X_op == O_constant); |
904a31bf AM |
1310 | return fix_new (symbol_get_frag (csym), |
1311 | symbol_get_value_expression (csym)->X_add_number, | |
1312 | 0, psym, 0, 0, BFD_RELOC_VTABLE_INHERIT); | |
252b5132 | 1313 | } |
fa306131 | 1314 | |
252b5132 RH |
1315 | /* This handles the .vtable_entry pseudo-op, which is used to indicate |
1316 | to the linker that a vtable slot was used. The syntax is | |
1317 | ".vtable_entry tablename, offset". */ | |
1318 | ||
904a31bf | 1319 | struct fix * |
dbe2df79 | 1320 | obj_elf_vtable_entry (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1321 | { |
1322 | char *name; | |
1323 | symbolS *sym; | |
1324 | offsetT offset; | |
1325 | char c; | |
1326 | ||
1327 | if (*input_line_pointer == '#') | |
1328 | ++input_line_pointer; | |
1329 | ||
1330 | name = input_line_pointer; | |
1331 | c = get_symbol_end (); | |
1332 | sym = symbol_find_or_make (name); | |
1333 | *input_line_pointer = c; | |
1334 | ||
1335 | SKIP_WHITESPACE (); | |
1336 | if (*input_line_pointer != ',') | |
1337 | { | |
1338 | as_bad ("expected comma after name in .vtable_entry"); | |
1339 | ignore_rest_of_line (); | |
904a31bf | 1340 | return NULL; |
252b5132 RH |
1341 | } |
1342 | ||
1343 | ++input_line_pointer; | |
1344 | if (*input_line_pointer == '#') | |
1345 | ++input_line_pointer; | |
1346 | ||
1347 | offset = get_absolute_expression (); | |
1348 | ||
252b5132 | 1349 | demand_empty_rest_of_line (); |
904a31bf AM |
1350 | |
1351 | return fix_new (frag_now, frag_now_fix (), 0, sym, offset, 0, | |
1352 | BFD_RELOC_VTABLE_ENTRY); | |
252b5132 RH |
1353 | } |
1354 | ||
1355 | void | |
dbe2df79 | 1356 | elf_obj_read_begin_hook (void) |
252b5132 RH |
1357 | { |
1358 | #ifdef NEED_ECOFF_DEBUG | |
1359 | if (ECOFF_DEBUGGING) | |
1360 | ecoff_read_begin_hook (); | |
1361 | #endif | |
1362 | } | |
1363 | ||
1364 | void | |
dbe2df79 | 1365 | elf_obj_symbol_new_hook (symbolS *symbolP) |
252b5132 | 1366 | { |
49309057 ILT |
1367 | struct elf_obj_sy *sy_obj; |
1368 | ||
1369 | sy_obj = symbol_get_obj (symbolP); | |
1370 | sy_obj->size = NULL; | |
1371 | sy_obj->versioned_name = NULL; | |
252b5132 RH |
1372 | |
1373 | #ifdef NEED_ECOFF_DEBUG | |
1374 | if (ECOFF_DEBUGGING) | |
1375 | ecoff_symbol_new_hook (symbolP); | |
1376 | #endif | |
1377 | } | |
1378 | ||
8fd3e36b AM |
1379 | /* When setting one symbol equal to another, by default we probably |
1380 | want them to have the same "size", whatever it means in the current | |
1381 | context. */ | |
1382 | ||
1383 | void | |
dbe2df79 | 1384 | elf_copy_symbol_attributes (symbolS *dest, symbolS *src) |
8fd3e36b | 1385 | { |
060adf0e AM |
1386 | struct elf_obj_sy *srcelf = symbol_get_obj (src); |
1387 | struct elf_obj_sy *destelf = symbol_get_obj (dest); | |
1388 | if (srcelf->size) | |
1389 | { | |
1390 | if (destelf->size == NULL) | |
dbe2df79 | 1391 | destelf->size = xmalloc (sizeof (expressionS)); |
060adf0e AM |
1392 | *destelf->size = *srcelf->size; |
1393 | } | |
1394 | else | |
1395 | { | |
1396 | if (destelf->size != NULL) | |
1397 | free (destelf->size); | |
1398 | destelf->size = NULL; | |
1399 | } | |
1400 | S_SET_SIZE (dest, S_GET_SIZE (src)); | |
26eb4093 JJ |
1401 | /* Don't copy visibility. */ |
1402 | S_SET_OTHER (dest, (ELF_ST_VISIBILITY (S_GET_OTHER (dest)) | |
1403 | | (S_GET_OTHER (src) & ~ELF_ST_VISIBILITY (-1)))); | |
8fd3e36b AM |
1404 | } |
1405 | ||
252b5132 | 1406 | void |
dbe2df79 | 1407 | obj_elf_version (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1408 | { |
1409 | char *name; | |
1410 | unsigned int c; | |
252b5132 RH |
1411 | char *p; |
1412 | asection *seg = now_seg; | |
1413 | subsegT subseg = now_subseg; | |
1414 | Elf_Internal_Note i_note; | |
1415 | Elf_External_Note e_note; | |
dbe2df79 | 1416 | asection *note_secp = NULL; |
e4afe742 | 1417 | int len; |
252b5132 RH |
1418 | |
1419 | SKIP_WHITESPACE (); | |
1420 | if (*input_line_pointer == '\"') | |
1421 | { | |
bf514e21 | 1422 | ++input_line_pointer; /* -> 1st char of string. */ |
252b5132 RH |
1423 | name = input_line_pointer; |
1424 | ||
1425 | while (is_a_char (c = next_char_of_string ())) | |
1426 | ; | |
1427 | c = *input_line_pointer; | |
1428 | *input_line_pointer = '\0'; | |
1429 | *(input_line_pointer - 1) = '\0'; | |
1430 | *input_line_pointer = c; | |
1431 | ||
1432 | /* create the .note section */ | |
1433 | ||
1434 | note_secp = subseg_new (".note", 0); | |
1435 | bfd_set_section_flags (stdoutput, | |
1436 | note_secp, | |
1437 | SEC_HAS_CONTENTS | SEC_READONLY); | |
1438 | ||
1439 | /* process the version string */ | |
1440 | ||
1441 | len = strlen (name); | |
1442 | ||
1443 | i_note.namesz = ((len + 1) + 3) & ~3; /* round this to word boundary */ | |
1444 | i_note.descsz = 0; /* no description */ | |
1445 | i_note.type = NT_VERSION; | |
1446 | p = frag_more (sizeof (e_note.namesz)); | |
dbe2df79 | 1447 | md_number_to_chars (p, i_note.namesz, sizeof (e_note.namesz)); |
252b5132 | 1448 | p = frag_more (sizeof (e_note.descsz)); |
dbe2df79 | 1449 | md_number_to_chars (p, i_note.descsz, sizeof (e_note.descsz)); |
252b5132 | 1450 | p = frag_more (sizeof (e_note.type)); |
dbe2df79 | 1451 | md_number_to_chars (p, i_note.type, sizeof (e_note.type)); |
e4afe742 AM |
1452 | p = frag_more (len + 1); |
1453 | strcpy (p, name); | |
252b5132 | 1454 | |
252b5132 RH |
1455 | frag_align (2, 0, 0); |
1456 | ||
1457 | subseg_set (seg, subseg); | |
1458 | } | |
1459 | else | |
1460 | { | |
6ce8b369 | 1461 | as_bad (_("expected quoted string")); |
252b5132 RH |
1462 | } |
1463 | demand_empty_rest_of_line (); | |
1464 | } | |
1465 | ||
1466 | static void | |
dbe2df79 | 1467 | obj_elf_size (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1468 | { |
1469 | char *name = input_line_pointer; | |
1470 | char c = get_symbol_end (); | |
1471 | char *p; | |
1472 | expressionS exp; | |
1473 | symbolS *sym; | |
1474 | ||
1475 | p = input_line_pointer; | |
1476 | *p = c; | |
1477 | SKIP_WHITESPACE (); | |
1478 | if (*input_line_pointer != ',') | |
1479 | { | |
1480 | *p = 0; | |
1481 | as_bad (_("expected comma after name `%s' in .size directive"), name); | |
1482 | *p = c; | |
1483 | ignore_rest_of_line (); | |
1484 | return; | |
1485 | } | |
1486 | input_line_pointer++; | |
1487 | expression (&exp); | |
1488 | if (exp.X_op == O_absent) | |
1489 | { | |
1490 | as_bad (_("missing expression in .size directive")); | |
1491 | exp.X_op = O_constant; | |
1492 | exp.X_add_number = 0; | |
1493 | } | |
1494 | *p = 0; | |
1495 | sym = symbol_find_or_make (name); | |
1496 | *p = c; | |
1497 | if (exp.X_op == O_constant) | |
c538998c JJ |
1498 | { |
1499 | S_SET_SIZE (sym, exp.X_add_number); | |
1500 | if (symbol_get_obj (sym)->size) | |
1501 | { | |
1502 | xfree (symbol_get_obj (sym)->size); | |
1503 | symbol_get_obj (sym)->size = NULL; | |
1504 | } | |
1505 | } | |
252b5132 RH |
1506 | else |
1507 | { | |
dbe2df79 | 1508 | symbol_get_obj (sym)->size = xmalloc (sizeof (expressionS)); |
49309057 | 1509 | *symbol_get_obj (sym)->size = exp; |
252b5132 RH |
1510 | } |
1511 | demand_empty_rest_of_line (); | |
1512 | } | |
1513 | ||
1514 | /* Handle the ELF .type pseudo-op. This sets the type of a symbol. | |
aa8c34c3 | 1515 | There are five syntaxes: |
fa306131 | 1516 | |
252b5132 RH |
1517 | The first (used on Solaris) is |
1518 | .type SYM,#function | |
1519 | The second (used on UnixWare) is | |
1520 | .type SYM,@function | |
1521 | The third (reportedly to be used on Irix 6.0) is | |
1522 | .type SYM STT_FUNC | |
1523 | The fourth (used on NetBSD/Arm and Linux/ARM) is | |
1524 | .type SYM,%function | |
aa8c34c3 JE |
1525 | The fifth (used on SVR4/860) is |
1526 | .type SYM,"function" | |
252b5132 RH |
1527 | */ |
1528 | ||
1529 | static void | |
dbe2df79 | 1530 | obj_elf_type (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1531 | { |
1532 | char *name; | |
1533 | char c; | |
1534 | int type; | |
1535 | const char *typename; | |
1536 | symbolS *sym; | |
904a31bf | 1537 | elf_symbol_type *elfsym; |
252b5132 RH |
1538 | |
1539 | name = input_line_pointer; | |
1540 | c = get_symbol_end (); | |
1541 | sym = symbol_find_or_make (name); | |
904a31bf | 1542 | elfsym = (elf_symbol_type *) symbol_get_bfdsym (sym); |
252b5132 RH |
1543 | *input_line_pointer = c; |
1544 | ||
1545 | SKIP_WHITESPACE (); | |
1546 | if (*input_line_pointer == ',') | |
1547 | ++input_line_pointer; | |
1548 | ||
1549 | SKIP_WHITESPACE (); | |
1550 | if ( *input_line_pointer == '#' | |
1551 | || *input_line_pointer == '@' | |
aa8c34c3 | 1552 | || *input_line_pointer == '"' |
252b5132 RH |
1553 | || *input_line_pointer == '%') |
1554 | ++input_line_pointer; | |
1555 | ||
1556 | typename = input_line_pointer; | |
1557 | c = get_symbol_end (); | |
1558 | ||
1559 | type = 0; | |
1560 | if (strcmp (typename, "function") == 0 | |
1561 | || strcmp (typename, "STT_FUNC") == 0) | |
1562 | type = BSF_FUNCTION; | |
1563 | else if (strcmp (typename, "object") == 0 | |
1564 | || strcmp (typename, "STT_OBJECT") == 0) | |
1565 | type = BSF_OBJECT; | |
b9734f35 JJ |
1566 | else if (strcmp (typename, "tls_object") == 0 |
1567 | || strcmp (typename, "STT_TLS") == 0) | |
1568 | type = BSF_OBJECT | BSF_THREAD_LOCAL; | |
e7b9a8c1 L |
1569 | else if (strcmp (typename, "notype") == 0 |
1570 | || strcmp (typename, "STT_NOTYPE") == 0) | |
1571 | ; | |
904a31bf AM |
1572 | #ifdef md_elf_symbol_type |
1573 | else if ((type = md_elf_symbol_type (typename, sym, elfsym)) != -1) | |
1574 | ; | |
1575 | #endif | |
252b5132 | 1576 | else |
6ce8b369 | 1577 | as_bad (_("unrecognized symbol type \"%s\""), typename); |
252b5132 RH |
1578 | |
1579 | *input_line_pointer = c; | |
1580 | ||
aa8c34c3 JE |
1581 | if (*input_line_pointer == '"') |
1582 | ++input_line_pointer; | |
1583 | ||
904a31bf | 1584 | elfsym->symbol.flags |= type; |
252b5132 RH |
1585 | |
1586 | demand_empty_rest_of_line (); | |
1587 | } | |
1588 | ||
1589 | static void | |
dbe2df79 | 1590 | obj_elf_ident (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1591 | { |
1592 | static segT comment_section; | |
1593 | segT old_section = now_seg; | |
1594 | int old_subsection = now_subseg; | |
1595 | ||
5f91fe03 ILT |
1596 | #ifdef md_flush_pending_output |
1597 | md_flush_pending_output (); | |
1598 | #endif | |
1599 | ||
252b5132 RH |
1600 | if (!comment_section) |
1601 | { | |
1602 | char *p; | |
1603 | comment_section = subseg_new (".comment", 0); | |
1604 | bfd_set_section_flags (stdoutput, comment_section, | |
1605 | SEC_READONLY | SEC_HAS_CONTENTS); | |
1606 | p = frag_more (1); | |
1607 | *p = 0; | |
1608 | } | |
1609 | else | |
1610 | subseg_set (comment_section, 0); | |
1611 | stringer (1); | |
1612 | subseg_set (old_section, old_subsection); | |
1613 | } | |
1614 | ||
1615 | #ifdef INIT_STAB_SECTION | |
1616 | ||
1617 | /* The first entry in a .stabs section is special. */ | |
1618 | ||
1619 | void | |
dbe2df79 | 1620 | obj_elf_init_stab_section (segT seg) |
252b5132 RH |
1621 | { |
1622 | char *file; | |
1623 | char *p; | |
1624 | char *stabstr_name; | |
1625 | unsigned int stroff; | |
1626 | ||
1627 | /* Force the section to align to a longword boundary. Without this, | |
1628 | UnixWare ar crashes. */ | |
1629 | bfd_set_section_alignment (stdoutput, seg, 2); | |
1630 | ||
bf514e21 | 1631 | /* Make space for this first symbol. */ |
252b5132 | 1632 | p = frag_more (12); |
bf514e21 | 1633 | /* Zero it out. */ |
252b5132 | 1634 | memset (p, 0, 12); |
dbe2df79 AM |
1635 | as_where (&file, NULL); |
1636 | stabstr_name = xmalloc (strlen (segment_name (seg)) + 4); | |
252b5132 RH |
1637 | strcpy (stabstr_name, segment_name (seg)); |
1638 | strcat (stabstr_name, "str"); | |
1639 | stroff = get_stab_string_offset (file, stabstr_name); | |
1640 | know (stroff == 1); | |
1641 | md_number_to_chars (p, stroff, 4); | |
1642 | seg_info (seg)->stabu.p = p; | |
1643 | } | |
1644 | ||
1645 | #endif | |
1646 | ||
1647 | /* Fill in the counts in the first entry in a .stabs section. */ | |
1648 | ||
1649 | static void | |
dbe2df79 | 1650 | adjust_stab_sections (bfd *abfd, asection *sec, void *xxx ATTRIBUTE_UNUSED) |
252b5132 RH |
1651 | { |
1652 | char *name; | |
1653 | asection *strsec; | |
1654 | char *p; | |
1655 | int strsz, nsyms; | |
1656 | ||
1657 | if (strncmp (".stab", sec->name, 5)) | |
1658 | return; | |
1659 | if (!strcmp ("str", sec->name + strlen (sec->name) - 3)) | |
1660 | return; | |
1661 | ||
dbe2df79 | 1662 | name = alloca (strlen (sec->name) + 4); |
252b5132 RH |
1663 | strcpy (name, sec->name); |
1664 | strcat (name, "str"); | |
1665 | strsec = bfd_get_section_by_name (abfd, name); | |
1666 | if (strsec) | |
1667 | strsz = bfd_section_size (abfd, strsec); | |
1668 | else | |
1669 | strsz = 0; | |
1670 | nsyms = bfd_section_size (abfd, sec) / 12 - 1; | |
1671 | ||
1672 | p = seg_info (sec)->stabu.p; | |
1673 | assert (p != 0); | |
1674 | ||
dbe2df79 AM |
1675 | bfd_h_put_16 (abfd, nsyms, p + 6); |
1676 | bfd_h_put_32 (abfd, strsz, p + 8); | |
252b5132 RH |
1677 | } |
1678 | ||
1679 | #ifdef NEED_ECOFF_DEBUG | |
1680 | ||
1681 | /* This function is called by the ECOFF code. It is supposed to | |
1682 | record the external symbol information so that the backend can | |
1683 | write it out correctly. The ELF backend doesn't actually handle | |
1684 | this at the moment, so we do it ourselves. We save the information | |
1685 | in the symbol. */ | |
1686 | ||
1687 | void | |
dbe2df79 | 1688 | elf_ecoff_set_ext (symbolS *sym, struct ecoff_extr *ext) |
252b5132 | 1689 | { |
dbe2df79 | 1690 | symbol_get_bfdsym (sym)->udata.p = ext; |
252b5132 RH |
1691 | } |
1692 | ||
1693 | /* This function is called by bfd_ecoff_debug_externals. It is | |
1694 | supposed to *EXT to the external symbol information, and return | |
1695 | whether the symbol should be used at all. */ | |
1696 | ||
b34976b6 | 1697 | static bfd_boolean |
dbe2df79 | 1698 | elf_get_extr (asymbol *sym, EXTR *ext) |
252b5132 RH |
1699 | { |
1700 | if (sym->udata.p == NULL) | |
b34976b6 | 1701 | return FALSE; |
252b5132 | 1702 | *ext = *(EXTR *) sym->udata.p; |
b34976b6 | 1703 | return TRUE; |
252b5132 RH |
1704 | } |
1705 | ||
1706 | /* This function is called by bfd_ecoff_debug_externals. It has | |
1707 | nothing to do for ELF. */ | |
1708 | ||
252b5132 | 1709 | static void |
dbe2df79 AM |
1710 | elf_set_index (asymbol *sym ATTRIBUTE_UNUSED, |
1711 | bfd_size_type indx ATTRIBUTE_UNUSED) | |
252b5132 RH |
1712 | { |
1713 | } | |
1714 | ||
1715 | #endif /* NEED_ECOFF_DEBUG */ | |
1716 | ||
1717 | void | |
dbe2df79 | 1718 | elf_frob_symbol (symbolS *symp, int *puntp) |
252b5132 | 1719 | { |
49309057 ILT |
1720 | struct elf_obj_sy *sy_obj; |
1721 | ||
252b5132 RH |
1722 | #ifdef NEED_ECOFF_DEBUG |
1723 | if (ECOFF_DEBUGGING) | |
1724 | ecoff_frob_symbol (symp); | |
1725 | #endif | |
1726 | ||
49309057 ILT |
1727 | sy_obj = symbol_get_obj (symp); |
1728 | ||
1729 | if (sy_obj->size != NULL) | |
252b5132 | 1730 | { |
49309057 | 1731 | switch (sy_obj->size->X_op) |
252b5132 RH |
1732 | { |
1733 | case O_subtract: | |
1734 | S_SET_SIZE (symp, | |
49309057 ILT |
1735 | (S_GET_VALUE (sy_obj->size->X_add_symbol) |
1736 | + sy_obj->size->X_add_number | |
1737 | - S_GET_VALUE (sy_obj->size->X_op_symbol))); | |
252b5132 RH |
1738 | break; |
1739 | case O_constant: | |
1740 | S_SET_SIZE (symp, | |
49309057 ILT |
1741 | (S_GET_VALUE (sy_obj->size->X_add_symbol) |
1742 | + sy_obj->size->X_add_number)); | |
252b5132 RH |
1743 | break; |
1744 | default: | |
1745 | as_bad (_(".size expression too complicated to fix up")); | |
1746 | break; | |
1747 | } | |
49309057 ILT |
1748 | free (sy_obj->size); |
1749 | sy_obj->size = NULL; | |
252b5132 RH |
1750 | } |
1751 | ||
49309057 | 1752 | if (sy_obj->versioned_name != NULL) |
252b5132 | 1753 | { |
79082ff0 L |
1754 | char *p; |
1755 | ||
1756 | p = strchr (sy_obj->versioned_name, ELF_VER_CHR); | |
1757 | know (p != NULL); | |
1758 | ||
252b5132 RH |
1759 | /* This symbol was given a new name with the .symver directive. |
1760 | ||
13c56984 AM |
1761 | If this is an external reference, just rename the symbol to |
1762 | include the version string. This will make the relocs be | |
1763 | against the correct versioned symbol. | |
252b5132 RH |
1764 | |
1765 | If this is a definition, add an alias. FIXME: Using an alias | |
1766 | will permit the debugging information to refer to the right | |
1767 | symbol. However, it's not clear whether it is the best | |
1768 | approach. */ | |
1769 | ||
1770 | if (! S_IS_DEFINED (symp)) | |
1771 | { | |
252b5132 | 1772 | /* Verify that the name isn't using the @@ syntax--this is |
13c56984 AM |
1773 | reserved for definitions of the default version to link |
1774 | against. */ | |
252b5132 RH |
1775 | if (p[1] == ELF_VER_CHR) |
1776 | { | |
1777 | as_bad (_("invalid attempt to declare external version name as default in symbol `%s'"), | |
49309057 | 1778 | sy_obj->versioned_name); |
b34976b6 | 1779 | *puntp = TRUE; |
252b5132 | 1780 | } |
49309057 | 1781 | S_SET_NAME (symp, sy_obj->versioned_name); |
252b5132 RH |
1782 | } |
1783 | else | |
1784 | { | |
dbe2df79 | 1785 | if (p[1] == ELF_VER_CHR && p[2] == ELF_VER_CHR) |
79082ff0 L |
1786 | { |
1787 | size_t l; | |
1788 | ||
1789 | /* The @@@ syntax is a special case. It renames the | |
1790 | symbol name to versioned_name with one `@' removed. */ | |
1791 | l = strlen (&p[3]) + 1; | |
dbe2df79 | 1792 | memmove (&p[2], &p[3], l); |
79082ff0 L |
1793 | S_SET_NAME (symp, sy_obj->versioned_name); |
1794 | } | |
1795 | else | |
1796 | { | |
1797 | symbolS *symp2; | |
252b5132 | 1798 | |
79082ff0 L |
1799 | /* FIXME: Creating a new symbol here is risky. We're |
1800 | in the final loop over the symbol table. We can | |
1801 | get away with it only because the symbol goes to | |
1802 | the end of the list, where the loop will still see | |
1803 | it. It would probably be better to do this in | |
1804 | obj_frob_file_before_adjust. */ | |
252b5132 | 1805 | |
79082ff0 | 1806 | symp2 = symbol_find_or_make (sy_obj->versioned_name); |
252b5132 | 1807 | |
79082ff0 | 1808 | /* Now we act as though we saw symp2 = sym. */ |
252b5132 | 1809 | |
79082ff0 | 1810 | S_SET_SEGMENT (symp2, S_GET_SEGMENT (symp)); |
252b5132 | 1811 | |
79082ff0 L |
1812 | /* Subtracting out the frag address here is a hack |
1813 | because we are in the middle of the final loop. */ | |
1814 | S_SET_VALUE (symp2, | |
1815 | (S_GET_VALUE (symp) | |
1816 | - symbol_get_frag (symp)->fr_address)); | |
252b5132 | 1817 | |
79082ff0 | 1818 | symbol_set_frag (symp2, symbol_get_frag (symp)); |
252b5132 | 1819 | |
79082ff0 L |
1820 | /* This will copy over the size information. */ |
1821 | copy_symbol_attributes (symp2, symp); | |
252b5132 | 1822 | |
26eb4093 JJ |
1823 | S_SET_OTHER (symp2, S_GET_OTHER (symp)); |
1824 | ||
79082ff0 L |
1825 | if (S_IS_WEAK (symp)) |
1826 | S_SET_WEAK (symp2); | |
252b5132 | 1827 | |
79082ff0 L |
1828 | if (S_IS_EXTERNAL (symp)) |
1829 | S_SET_EXTERNAL (symp2); | |
1830 | } | |
252b5132 RH |
1831 | } |
1832 | } | |
1833 | ||
1834 | /* Double check weak symbols. */ | |
49309057 | 1835 | if (S_IS_WEAK (symp)) |
252b5132 RH |
1836 | { |
1837 | if (S_IS_COMMON (symp)) | |
6ce8b369 | 1838 | as_bad (_("symbol `%s' can not be both weak and common"), |
252b5132 RH |
1839 | S_GET_NAME (symp)); |
1840 | } | |
1841 | ||
1842 | #ifdef TC_MIPS | |
1843 | /* The Irix 5 and 6 assemblers set the type of any common symbol and | |
1844 | any undefined non-function symbol to STT_OBJECT. We try to be | |
1845 | compatible, since newer Irix 5 and 6 linkers care. However, we | |
1846 | only set undefined symbols to be STT_OBJECT if we are on Irix, | |
1847 | because that is the only time gcc will generate the necessary | |
1848 | .global directives to mark functions. */ | |
1849 | ||
1850 | if (S_IS_COMMON (symp)) | |
49309057 | 1851 | symbol_get_bfdsym (symp)->flags |= BSF_OBJECT; |
252b5132 RH |
1852 | |
1853 | if (strstr (TARGET_OS, "irix") != NULL | |
49309057 ILT |
1854 | && ! S_IS_DEFINED (symp) |
1855 | && (symbol_get_bfdsym (symp)->flags & BSF_FUNCTION) == 0) | |
1856 | symbol_get_bfdsym (symp)->flags |= BSF_OBJECT; | |
252b5132 | 1857 | #endif |
252b5132 RH |
1858 | } |
1859 | ||
060adf0e AM |
1860 | struct group_list |
1861 | { | |
1862 | asection **head; /* Section lists. */ | |
1863 | unsigned int *elt_count; /* Number of sections in each list. */ | |
1864 | unsigned int num_group; /* Number of lists. */ | |
1865 | }; | |
1866 | ||
1867 | /* Called via bfd_map_over_sections. If SEC is a member of a group, | |
1868 | add it to a list of sections belonging to the group. INF is a | |
1869 | pointer to a struct group_list, which is where we store the head of | |
1870 | each list. */ | |
1871 | ||
1872 | static void | |
dbe2df79 | 1873 | build_group_lists (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *inf) |
060adf0e | 1874 | { |
dbe2df79 | 1875 | struct group_list *list = inf; |
aa1f4858 | 1876 | const char *group_name = elf_group_name (sec); |
060adf0e AM |
1877 | unsigned int i; |
1878 | ||
1879 | if (group_name == NULL) | |
1880 | return; | |
1881 | ||
1882 | /* If this group already has a list, add the section to the head of | |
1883 | the list. */ | |
1884 | for (i = 0; i < list->num_group; i++) | |
1885 | { | |
aa1f4858 | 1886 | if (strcmp (group_name, elf_group_name (list->head[i])) == 0) |
060adf0e | 1887 | { |
aa1f4858 | 1888 | elf_next_in_group (sec) = list->head[i]; |
060adf0e AM |
1889 | list->head[i] = sec; |
1890 | list->elt_count[i] += 1; | |
1891 | return; | |
1892 | } | |
1893 | } | |
1894 | ||
1895 | /* New group. Make the arrays bigger in chunks to minimize calls to | |
1896 | realloc. */ | |
1897 | i = list->num_group; | |
1898 | if ((i & 127) == 0) | |
1899 | { | |
1900 | unsigned int newsize = i + 128; | |
1901 | list->head = xrealloc (list->head, newsize * sizeof (*list->head)); | |
1902 | list->elt_count = xrealloc (list->elt_count, | |
1903 | newsize * sizeof (*list->elt_count)); | |
1904 | } | |
1905 | list->head[i] = sec; | |
1906 | list->elt_count[i] = 1; | |
1907 | list->num_group += 1; | |
1908 | } | |
1909 | ||
252b5132 | 1910 | void |
dbe2df79 | 1911 | elf_frob_file (void) |
252b5132 | 1912 | { |
060adf0e AM |
1913 | struct group_list list; |
1914 | unsigned int i; | |
1915 | ||
dbe2df79 | 1916 | bfd_map_over_sections (stdoutput, adjust_stab_sections, NULL); |
252b5132 | 1917 | |
060adf0e AM |
1918 | /* Go find section groups. */ |
1919 | list.num_group = 0; | |
1920 | list.head = NULL; | |
1921 | list.elt_count = NULL; | |
dbe2df79 | 1922 | bfd_map_over_sections (stdoutput, build_group_lists, &list); |
060adf0e AM |
1923 | |
1924 | /* Make the SHT_GROUP sections that describe each section group. We | |
1925 | can't set up the section contents here yet, because elf section | |
1926 | indices have yet to be calculated. elf.c:set_group_contents does | |
1927 | the rest of the work. */ | |
1928 | for (i = 0; i < list.num_group; i++) | |
1929 | { | |
aa1f4858 | 1930 | const char *group_name = elf_group_name (list.head[i]); |
9758f3fc | 1931 | const char *sec_name; |
060adf0e AM |
1932 | asection *s; |
1933 | flagword flags; | |
9758f3fc AM |
1934 | struct symbol *sy; |
1935 | int has_sym; | |
587aac4e | 1936 | bfd_size_type size; |
060adf0e | 1937 | |
060adf0e | 1938 | flags = SEC_READONLY | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_GROUP; |
d2dab548 | 1939 | for (s = list.head[i]; s != NULL; s = elf_next_in_group (s)) |
68bfbfcc | 1940 | if ((s->flags ^ flags) & SEC_LINK_ONCE) |
d2dab548 AM |
1941 | { |
1942 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
1943 | if (s != list.head[i]) | |
1944 | { | |
1945 | as_warn (_("assuming all members of group `%s' are COMDAT"), | |
1946 | group_name); | |
1947 | break; | |
1948 | } | |
1949 | } | |
1950 | ||
9758f3fc AM |
1951 | sec_name = group_name; |
1952 | sy = symbol_find_exact (group_name); | |
1953 | has_sym = 0; | |
1954 | if (sy != NULL | |
1955 | && (sy == symbol_lastP | |
1956 | || (sy->sy_next != NULL | |
1957 | && sy->sy_next->sy_previous == sy))) | |
1958 | { | |
1959 | has_sym = 1; | |
1960 | sec_name = ".group"; | |
1961 | } | |
1962 | s = subseg_force_new (sec_name, 0); | |
060adf0e AM |
1963 | if (s == NULL |
1964 | || !bfd_set_section_flags (stdoutput, s, flags) | |
1965 | || !bfd_set_section_alignment (stdoutput, s, 2)) | |
1966 | { | |
1967 | as_fatal (_("can't create group: %s"), | |
1968 | bfd_errmsg (bfd_get_error ())); | |
1969 | } | |
2f89ff8d | 1970 | elf_section_type (s) = SHT_GROUP; |
060adf0e | 1971 | |
aa1f4858 AM |
1972 | /* Pass a pointer to the first section in this group. */ |
1973 | elf_next_in_group (s) = list.head[i]; | |
9758f3fc AM |
1974 | if (has_sym) |
1975 | elf_group_id (s) = sy->bsym; | |
060adf0e | 1976 | |
587aac4e AM |
1977 | size = 4 * (list.elt_count[i] + 1); |
1978 | bfd_set_section_size (stdoutput, s, size); | |
b7712f8d | 1979 | s->contents = (unsigned char *) frag_more (size); |
060adf0e AM |
1980 | frag_now->fr_fix = frag_now_fix_octets (); |
1981 | } | |
1982 | ||
252b5132 RH |
1983 | #ifdef elf_tc_final_processing |
1984 | elf_tc_final_processing (); | |
1985 | #endif | |
1986 | } | |
1987 | ||
4a1805b1 | 1988 | /* It removes any unneeded versioned symbols from the symbol table. */ |
339681c0 L |
1989 | |
1990 | void | |
dbe2df79 | 1991 | elf_frob_file_before_adjust (void) |
339681c0 L |
1992 | { |
1993 | if (symbol_rootP) | |
1994 | { | |
1995 | symbolS *symp; | |
1996 | ||
1997 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) | |
00e6e13d | 1998 | if (!S_IS_DEFINED (symp)) |
79082ff0 | 1999 | { |
00e6e13d | 2000 | if (symbol_get_obj (symp)->versioned_name) |
79082ff0 L |
2001 | { |
2002 | char *p; | |
2003 | ||
2004 | /* The @@@ syntax is a special case. If the symbol is | |
2005 | not defined, 2 `@'s will be removed from the | |
2006 | versioned_name. */ | |
2007 | ||
2008 | p = strchr (symbol_get_obj (symp)->versioned_name, | |
2009 | ELF_VER_CHR); | |
2010 | know (p != NULL); | |
dbe2df79 | 2011 | if (p[1] == ELF_VER_CHR && p[2] == ELF_VER_CHR) |
79082ff0 L |
2012 | { |
2013 | size_t l = strlen (&p[3]) + 1; | |
dbe2df79 | 2014 | memmove (&p[1], &p[3], l); |
79082ff0 L |
2015 | } |
2016 | if (symbol_used_p (symp) == 0 | |
2017 | && symbol_used_in_reloc_p (symp) == 0) | |
2018 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
2019 | } | |
00e6e13d JJ |
2020 | |
2021 | /* If there was .weak foo, but foo was neither defined nor | |
2022 | used anywhere, remove it. */ | |
2023 | ||
2024 | else if (S_IS_WEAK (symp) | |
2025 | && symbol_used_p (symp) == 0 | |
2026 | && symbol_used_in_reloc_p (symp) == 0) | |
2027 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
79082ff0 | 2028 | } |
339681c0 L |
2029 | } |
2030 | } | |
2031 | ||
252b5132 RH |
2032 | /* It is required that we let write_relocs have the opportunity to |
2033 | optimize away fixups before output has begun, since it is possible | |
2034 | to eliminate all fixups for a section and thus we never should | |
2035 | have generated the relocation section. */ | |
2036 | ||
2037 | void | |
dbe2df79 | 2038 | elf_frob_file_after_relocs (void) |
252b5132 RH |
2039 | { |
2040 | #ifdef NEED_ECOFF_DEBUG | |
2041 | if (ECOFF_DEBUGGING) | |
2042 | /* Generate the ECOFF debugging information. */ | |
2043 | { | |
2044 | const struct ecoff_debug_swap *debug_swap; | |
2045 | struct ecoff_debug_info debug; | |
2046 | char *buf; | |
2047 | asection *sec; | |
2048 | ||
2049 | debug_swap | |
2050 | = get_elf_backend_data (stdoutput)->elf_backend_ecoff_debug_swap; | |
dbe2df79 | 2051 | know (debug_swap != NULL); |
252b5132 RH |
2052 | ecoff_build_debug (&debug.symbolic_header, &buf, debug_swap); |
2053 | ||
2054 | /* Set up the pointers in debug. */ | |
2055 | #define SET(ptr, offset, type) \ | |
2056 | debug.ptr = (type) (buf + debug.symbolic_header.offset) | |
2057 | ||
2058 | SET (line, cbLineOffset, unsigned char *); | |
dbe2df79 AM |
2059 | SET (external_dnr, cbDnOffset, void *); |
2060 | SET (external_pdr, cbPdOffset, void *); | |
2061 | SET (external_sym, cbSymOffset, void *); | |
2062 | SET (external_opt, cbOptOffset, void *); | |
252b5132 RH |
2063 | SET (external_aux, cbAuxOffset, union aux_ext *); |
2064 | SET (ss, cbSsOffset, char *); | |
dbe2df79 AM |
2065 | SET (external_fdr, cbFdOffset, void *); |
2066 | SET (external_rfd, cbRfdOffset, void *); | |
252b5132 RH |
2067 | /* ssext and external_ext are set up just below. */ |
2068 | ||
2069 | #undef SET | |
2070 | ||
2071 | /* Set up the external symbols. */ | |
2072 | debug.ssext = debug.ssext_end = NULL; | |
2073 | debug.external_ext = debug.external_ext_end = NULL; | |
b34976b6 | 2074 | if (! bfd_ecoff_debug_externals (stdoutput, &debug, debug_swap, TRUE, |
252b5132 | 2075 | elf_get_extr, elf_set_index)) |
6ce8b369 | 2076 | as_fatal (_("failed to set up debugging information: %s"), |
252b5132 RH |
2077 | bfd_errmsg (bfd_get_error ())); |
2078 | ||
2079 | sec = bfd_get_section_by_name (stdoutput, ".mdebug"); | |
2080 | assert (sec != NULL); | |
2081 | ||
b34976b6 | 2082 | know (!stdoutput->output_has_begun); |
252b5132 RH |
2083 | |
2084 | /* We set the size of the section, call bfd_set_section_contents | |
2085 | to force the ELF backend to allocate a file position, and then | |
2086 | write out the data. FIXME: Is this really the best way to do | |
2087 | this? */ | |
587aac4e AM |
2088 | bfd_set_section_size |
2089 | (stdoutput, sec, bfd_ecoff_debug_size (stdoutput, &debug, debug_swap)); | |
252b5132 | 2090 | |
5f91fe03 | 2091 | /* Pass BUF to bfd_set_section_contents because this will |
13c56984 AM |
2092 | eventually become a call to fwrite, and ISO C prohibits |
2093 | passing a NULL pointer to a stdio function even if the | |
2094 | pointer will not be used. */ | |
dbe2df79 | 2095 | if (! bfd_set_section_contents (stdoutput, sec, buf, 0, 0)) |
6ce8b369 | 2096 | as_fatal (_("can't start writing .mdebug section: %s"), |
252b5132 RH |
2097 | bfd_errmsg (bfd_get_error ())); |
2098 | ||
b34976b6 | 2099 | know (stdoutput->output_has_begun); |
252b5132 RH |
2100 | know (sec->filepos != 0); |
2101 | ||
2102 | if (! bfd_ecoff_write_debug (stdoutput, &debug, debug_swap, | |
2103 | sec->filepos)) | |
6ce8b369 | 2104 | as_fatal (_("could not write .mdebug section: %s"), |
252b5132 RH |
2105 | bfd_errmsg (bfd_get_error ())); |
2106 | } | |
2107 | #endif /* NEED_ECOFF_DEBUG */ | |
2108 | } | |
2109 | ||
2110 | #ifdef SCO_ELF | |
2111 | ||
aaa2624b | 2112 | /* Heavily plagiarized from obj_elf_version. The idea is to emit the |
252b5132 RH |
2113 | SCO specific identifier in the .notes section to satisfy the SCO |
2114 | linker. | |
2115 | ||
2116 | This looks more complicated than it really is. As opposed to the | |
2117 | "obvious" solution, this should handle the cross dev cases | |
2118 | correctly. (i.e, hosting on a 64 bit big endian processor, but | |
2119 | generating SCO Elf code) Efficiency isn't a concern, as there | |
2120 | should be exactly one of these sections per object module. | |
2121 | ||
2122 | SCO OpenServer 5 identifies it's ELF modules with a standard ELF | |
2123 | .note section. | |
2124 | ||
fa306131 AM |
2125 | int_32 namesz = 4 ; Name size |
2126 | int_32 descsz = 12 ; Descriptive information | |
2127 | int_32 type = 1 ; | |
2128 | char name[4] = "SCO" ; Originator name ALWAYS SCO + NULL | |
252b5132 RH |
2129 | int_32 version = (major ver # << 16) | version of tools ; |
2130 | int_32 source = (tool_id << 16 ) | 1 ; | |
2131 | int_32 info = 0 ; These are set by the SCO tools, but we | |
13c56984 | 2132 | don't know enough about the source |
252b5132 RH |
2133 | environment to set them. SCO ld currently |
2134 | ignores them, and recommends we set them | |
2135 | to zero. */ | |
2136 | ||
2137 | #define SCO_MAJOR_VERSION 0x1 | |
2138 | #define SCO_MINOR_VERSION 0x1 | |
2139 | ||
2140 | void | |
dbe2df79 | 2141 | sco_id (void) |
252b5132 RH |
2142 | { |
2143 | ||
2144 | char *name; | |
2145 | unsigned int c; | |
2146 | char ch; | |
2147 | char *p; | |
2148 | asection *seg = now_seg; | |
2149 | subsegT subseg = now_subseg; | |
2150 | Elf_Internal_Note i_note; | |
2151 | Elf_External_Note e_note; | |
dbe2df79 | 2152 | asection *note_secp = NULL; |
252b5132 RH |
2153 | int i, len; |
2154 | ||
2155 | /* create the .note section */ | |
2156 | ||
2157 | note_secp = subseg_new (".note", 0); | |
2158 | bfd_set_section_flags (stdoutput, | |
2159 | note_secp, | |
2160 | SEC_HAS_CONTENTS | SEC_READONLY); | |
2161 | ||
2162 | /* process the version string */ | |
2163 | ||
fa306131 | 2164 | i_note.namesz = 4; |
252b5132 RH |
2165 | i_note.descsz = 12; /* 12 descriptive bytes */ |
2166 | i_note.type = NT_VERSION; /* Contains a version string */ | |
2167 | ||
2168 | p = frag_more (sizeof (i_note.namesz)); | |
dbe2df79 | 2169 | md_number_to_chars (p, i_note.namesz, 4); |
252b5132 RH |
2170 | |
2171 | p = frag_more (sizeof (i_note.descsz)); | |
dbe2df79 | 2172 | md_number_to_chars (p, i_note.descsz, 4); |
252b5132 RH |
2173 | |
2174 | p = frag_more (sizeof (i_note.type)); | |
dbe2df79 | 2175 | md_number_to_chars (p, i_note.type, 4); |
252b5132 RH |
2176 | |
2177 | p = frag_more (4); | |
fa306131 | 2178 | strcpy (p, "SCO"); |
252b5132 RH |
2179 | |
2180 | /* Note: this is the version number of the ELF we're representing */ | |
2181 | p = frag_more (4); | |
2182 | md_number_to_chars (p, (SCO_MAJOR_VERSION << 16) | (SCO_MINOR_VERSION), 4); | |
2183 | ||
2184 | /* Here, we pick a magic number for ourselves (yes, I "registered" | |
2185 | it with SCO. The bottom bit shows that we are compat with the | |
2186 | SCO ABI. */ | |
2187 | p = frag_more (4); | |
2188 | md_number_to_chars (p, 0x4c520000 | 0x0001, 4); | |
2189 | ||
2190 | /* If we knew (or cared) what the source language options were, we'd | |
2191 | fill them in here. SCO has given us permission to ignore these | |
2192 | and just set them to zero. */ | |
2193 | p = frag_more (4); | |
2194 | md_number_to_chars (p, 0x0000, 4); | |
fa306131 | 2195 | |
252b5132 RH |
2196 | frag_align (2, 0, 0); |
2197 | ||
2198 | /* We probably can't restore the current segment, for there likely | |
2199 | isn't one yet... */ | |
2200 | if (seg && subseg) | |
2201 | subseg_set (seg, subseg); | |
2202 | ||
2203 | } | |
2204 | ||
2205 | #endif /* SCO_ELF */ | |
2206 | ||
5110c57e | 2207 | static int |
dbe2df79 | 2208 | elf_separate_stab_sections (void) |
5110c57e HPN |
2209 | { |
2210 | #ifdef NEED_ECOFF_DEBUG | |
2211 | return (!ECOFF_DEBUGGING); | |
2212 | #else | |
2213 | return 1; | |
2214 | #endif | |
2215 | } | |
2216 | ||
2217 | static void | |
dbe2df79 | 2218 | elf_init_stab_section (segT seg) |
5110c57e HPN |
2219 | { |
2220 | #ifdef NEED_ECOFF_DEBUG | |
2221 | if (!ECOFF_DEBUGGING) | |
2222 | #endif | |
2223 | obj_elf_init_stab_section (seg); | |
2224 | } | |
2225 | ||
252b5132 RH |
2226 | const struct format_ops elf_format_ops = |
2227 | { | |
2228 | bfd_target_elf_flavour, | |
4c63da97 AM |
2229 | 0, /* dfl_leading_underscore */ |
2230 | 1, /* emit_section_symbols */ | |
5110c57e HPN |
2231 | elf_begin, |
2232 | elf_file_symbol, | |
252b5132 RH |
2233 | elf_frob_symbol, |
2234 | elf_frob_file, | |
339681c0 | 2235 | elf_frob_file_before_adjust, |
a161fe53 | 2236 | 0, /* obj_frob_file_before_fix */ |
252b5132 RH |
2237 | elf_frob_file_after_relocs, |
2238 | elf_s_get_size, elf_s_set_size, | |
2239 | elf_s_get_align, elf_s_set_align, | |
4c63da97 | 2240 | elf_s_get_other, |
5110c57e | 2241 | elf_s_set_other, |
4c63da97 | 2242 | 0, /* s_get_desc */ |
5110c57e HPN |
2243 | 0, /* s_set_desc */ |
2244 | 0, /* s_get_type */ | |
2245 | 0, /* s_set_type */ | |
252b5132 RH |
2246 | elf_copy_symbol_attributes, |
2247 | #ifdef NEED_ECOFF_DEBUG | |
2248 | ecoff_generate_asm_lineno, | |
2249 | ecoff_stab, | |
2250 | #else | |
4c63da97 AM |
2251 | 0, /* generate_asm_lineno */ |
2252 | 0, /* process_stab */ | |
252b5132 | 2253 | #endif |
5110c57e HPN |
2254 | elf_separate_stab_sections, |
2255 | elf_init_stab_section, | |
252b5132 RH |
2256 | elf_sec_sym_ok_for_reloc, |
2257 | elf_pop_insert, | |
2258 | #ifdef NEED_ECOFF_DEBUG | |
2259 | elf_ecoff_set_ext, | |
2260 | #else | |
4c63da97 | 2261 | 0, /* ecoff_set_ext */ |
252b5132 | 2262 | #endif |
4c63da97 | 2263 | elf_obj_read_begin_hook, |
5110c57e | 2264 | elf_obj_symbol_new_hook |
252b5132 | 2265 | }; |