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252b5132 | 1 | /* symbols.c -symbol table- |
b3adc24a | 2 | Copyright (C) 1987-2020 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 published by | |
ec2655a6 | 8 | the Free Software Foundation; either version 3, or (at your option) |
252b5132 RH |
9 | any later version. |
10 | ||
11 | GAS is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | 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 | 20 | |
7c743825 | 21 | /* #define DEBUG_SYMS / * to debug symbol list maintenance. */ |
252b5132 | 22 | |
252b5132 | 23 | #include "as.h" |
3882b010 | 24 | #include "safe-ctype.h" |
252b5132 RH |
25 | #include "obstack.h" /* For "symbols.h" */ |
26 | #include "subsegs.h" | |
2469b3c5 | 27 | #include "write.h" |
49309057 | 28 | |
8d1015a8 AM |
29 | struct symbol_flags |
30 | { | |
31 | /* Whether the symbol is a local_symbol. */ | |
32 | unsigned int sy_local_symbol : 1; | |
33 | ||
34 | /* Weather symbol has been written. */ | |
35 | unsigned int sy_written : 1; | |
36 | ||
37 | /* Whether symbol value has been completely resolved (used during | |
38 | final pass over symbol table). */ | |
39 | unsigned int sy_resolved : 1; | |
40 | ||
41 | /* Whether the symbol value is currently being resolved (used to | |
42 | detect loops in symbol dependencies). */ | |
43 | unsigned int sy_resolving : 1; | |
44 | ||
45 | /* Whether the symbol value is used in a reloc. This is used to | |
46 | ensure that symbols used in relocs are written out, even if they | |
47 | are local and would otherwise not be. */ | |
48 | unsigned int sy_used_in_reloc : 1; | |
49 | ||
50 | /* Whether the symbol is used as an operand or in an expression. | |
51 | NOTE: Not all the backends keep this information accurate; | |
52 | backends which use this bit are responsible for setting it when | |
53 | a symbol is used in backend routines. */ | |
54 | unsigned int sy_used : 1; | |
55 | ||
56 | /* Whether the symbol can be re-defined. */ | |
57 | unsigned int sy_volatile : 1; | |
58 | ||
59 | /* Whether the symbol is a forward reference. */ | |
60 | unsigned int sy_forward_ref : 1; | |
61 | ||
62 | /* This is set if the symbol is defined in an MRI common section. | |
63 | We handle such sections as single common symbols, so symbols | |
64 | defined within them must be treated specially by the relocation | |
65 | routines. */ | |
66 | unsigned int sy_mri_common : 1; | |
67 | ||
68 | /* This is set if the symbol is set with a .weakref directive. */ | |
69 | unsigned int sy_weakrefr : 1; | |
70 | ||
71 | /* This is set when the symbol is referenced as part of a .weakref | |
72 | directive, but only if the symbol was not in the symbol table | |
73 | before. It is cleared as soon as any direct reference to the | |
74 | symbol is present. */ | |
75 | unsigned int sy_weakrefd : 1; | |
76 | }; | |
77 | ||
78 | /* The information we keep for a symbol. Note that the symbol table | |
79 | holds pointers both to this and to local_symbol structures. See | |
80 | below. */ | |
81 | ||
82 | struct symbol | |
83 | { | |
84 | /* Symbol flags. */ | |
85 | struct symbol_flags sy_flags; | |
86 | ||
87 | /* BFD symbol */ | |
88 | asymbol *bsym; | |
89 | ||
90 | /* The value of the symbol. */ | |
91 | expressionS sy_value; | |
92 | ||
93 | /* Forwards and (optionally) backwards chain pointers. */ | |
94 | struct symbol *sy_next; | |
95 | struct symbol *sy_previous; | |
96 | ||
97 | /* Pointer to the frag this symbol is attached to, if any. | |
98 | Otherwise, NULL. */ | |
99 | struct frag *sy_frag; | |
100 | ||
101 | #ifdef OBJ_SYMFIELD_TYPE | |
102 | OBJ_SYMFIELD_TYPE sy_obj; | |
103 | #endif | |
104 | ||
105 | #ifdef TC_SYMFIELD_TYPE | |
106 | TC_SYMFIELD_TYPE sy_tc; | |
107 | #endif | |
108 | ||
109 | #ifdef TARGET_SYMBOL_FIELDS | |
110 | TARGET_SYMBOL_FIELDS | |
111 | #endif | |
112 | }; | |
113 | ||
114 | /* A pointer in the symbol may point to either a complete symbol | |
115 | (struct symbol above) or to a local symbol (struct local_symbol | |
116 | defined here). The symbol code can detect the case by examining | |
2a50b401 | 117 | the first field which is present in both structs. |
8d1015a8 AM |
118 | |
119 | We do this because we ordinarily only need a small amount of | |
120 | information for a local symbol. The symbol table takes up a lot of | |
121 | space, and storing less information for a local symbol can make a | |
122 | big difference in assembler memory usage when assembling a large | |
123 | file. */ | |
124 | ||
125 | struct local_symbol | |
126 | { | |
127 | /* Symbol flags. Only sy_local_symbol and sy_resolved are relevant. */ | |
128 | struct symbol_flags lsy_flags; | |
129 | ||
130 | /* The symbol section. This also serves as a flag. If this is | |
131 | reg_section, then this symbol has been converted into a regular | |
132 | symbol, and lsy_sym points to it. */ | |
133 | segT lsy_section; | |
134 | ||
135 | /* The symbol name. */ | |
136 | const char *lsy_name; | |
137 | ||
138 | /* The symbol frag or the real symbol, depending upon the value in | |
139 | lsy_section. */ | |
140 | union | |
141 | { | |
142 | fragS *lsy_frag; | |
143 | symbolS *lsy_sym; | |
144 | } u; | |
145 | ||
146 | /* The value of the symbol. */ | |
147 | valueT lsy_value; | |
148 | ||
149 | #ifdef TC_LOCAL_SYMFIELD_TYPE | |
150 | TC_LOCAL_SYMFIELD_TYPE lsy_tc; | |
151 | #endif | |
152 | }; | |
153 | ||
154 | #define local_symbol_converted_p(l) ((l)->lsy_section == reg_section) | |
155 | #define local_symbol_mark_converted(l) ((l)->lsy_section = reg_section) | |
156 | #define local_symbol_resolved_p(l) ((l)->lsy_flags.sy_resolved) | |
157 | #define local_symbol_mark_resolved(l) ((l)->lsy_flags.sy_resolved = 1) | |
158 | #define local_symbol_get_frag(l) ((l)->u.lsy_frag) | |
159 | #define local_symbol_set_frag(l, f) ((l)->u.lsy_frag = (f)) | |
160 | #define local_symbol_get_real_symbol(l) ((l)->u.lsy_sym) | |
161 | #define local_symbol_set_real_symbol(l, s) ((l)->u.lsy_sym = (s)) | |
162 | ||
252b5132 RH |
163 | /* This is non-zero if symbols are case sensitive, which is the |
164 | default. */ | |
165 | int symbols_case_sensitive = 1; | |
166 | ||
167 | #ifndef WORKING_DOT_WORD | |
168 | extern int new_broken_words; | |
169 | #endif | |
170 | ||
171 | /* symbol-name => struct symbol pointer */ | |
172 | static struct hash_control *sy_hash; | |
173 | ||
49309057 ILT |
174 | /* Table of local symbols. */ |
175 | static struct hash_control *local_hash; | |
176 | ||
7c743825 | 177 | /* Below are commented in "symbols.h". */ |
252b5132 RH |
178 | symbolS *symbol_rootP; |
179 | symbolS *symbol_lastP; | |
180 | symbolS abs_symbol; | |
4a826962 | 181 | symbolS dot_symbol; |
252b5132 RH |
182 | |
183 | #ifdef DEBUG_SYMS | |
184 | #define debug_verify_symchain verify_symbol_chain | |
185 | #else | |
186 | #define debug_verify_symchain(root, last) ((void) 0) | |
187 | #endif | |
188 | ||
aa257fcd NC |
189 | #define DOLLAR_LABEL_CHAR '\001' |
190 | #define LOCAL_LABEL_CHAR '\002' | |
191 | ||
df58fc94 RS |
192 | #ifndef TC_LABEL_IS_LOCAL |
193 | #define TC_LABEL_IS_LOCAL(name) 0 | |
194 | #endif | |
195 | ||
252b5132 | 196 | struct obstack notes; |
22ba0981 | 197 | #ifdef TE_PE |
977cdf5a NC |
198 | /* The name of an external symbol which is |
199 | used to make weak PE symbol names unique. */ | |
200 | const char * an_external_name; | |
201 | #endif | |
252b5132 | 202 | |
b9bb4a93 | 203 | static const char *save_symbol_name (const char *); |
74937d39 KH |
204 | static void fb_label_init (void); |
205 | static long dollar_label_instance (long); | |
206 | static long fb_label_instance (long); | |
252b5132 | 207 | |
74937d39 | 208 | static void print_binary (FILE *, const char *, expressionS *); |
252b5132 | 209 | |
7c743825 | 210 | /* Return a pointer to a new symbol. Die if we can't make a new |
252b5132 RH |
211 | symbol. Fill in the symbol's values. Add symbol to end of symbol |
212 | chain. | |
7c743825 | 213 | |
252b5132 RH |
214 | This function should be called in the general case of creating a |
215 | symbol. However, if the output file symbol table has already been | |
216 | set, and you are certain that this symbol won't be wanted in the | |
217 | output file, you can call symbol_create. */ | |
218 | ||
219 | symbolS * | |
74937d39 | 220 | symbol_new (const char *name, segT segment, valueT valu, fragS *frag) |
252b5132 RH |
221 | { |
222 | symbolS *symbolP = symbol_create (name, segment, valu, frag); | |
223 | ||
7c743825 | 224 | /* Link to end of symbol chain. */ |
252b5132 RH |
225 | { |
226 | extern int symbol_table_frozen; | |
227 | if (symbol_table_frozen) | |
228 | abort (); | |
229 | } | |
252b5132 RH |
230 | symbol_append (symbolP, symbol_lastP, &symbol_rootP, &symbol_lastP); |
231 | ||
232 | return symbolP; | |
233 | } | |
234 | ||
49309057 ILT |
235 | /* Save a symbol name on a permanent obstack, and convert it according |
236 | to the object file format. */ | |
237 | ||
b9bb4a93 | 238 | static const char * |
74937d39 | 239 | save_symbol_name (const char *name) |
252b5132 | 240 | { |
e57e6ddc | 241 | size_t name_length; |
49309057 | 242 | char *ret; |
252b5132 | 243 | |
0df8ad28 | 244 | gas_assert (name != NULL); |
7c743825 | 245 | name_length = strlen (name) + 1; /* +1 for \0. */ |
252b5132 | 246 | obstack_grow (¬es, name, name_length); |
1e9cc1c2 | 247 | ret = (char *) obstack_finish (¬es); |
49309057 | 248 | |
252b5132 | 249 | #ifdef tc_canonicalize_symbol_name |
49309057 | 250 | ret = tc_canonicalize_symbol_name (ret); |
252b5132 RH |
251 | #endif |
252 | ||
253 | if (! symbols_case_sensitive) | |
254 | { | |
3882b010 | 255 | char *s; |
252b5132 | 256 | |
3882b010 L |
257 | for (s = ret; *s != '\0'; s++) |
258 | *s = TOUPPER (*s); | |
252b5132 RH |
259 | } |
260 | ||
49309057 ILT |
261 | return ret; |
262 | } | |
263 | ||
264 | symbolS * | |
74937d39 KH |
265 | symbol_create (const char *name, /* It is copied, the caller can destroy/modify. */ |
266 | segT segment, /* Segment identifier (SEG_<something>). */ | |
267 | valueT valu, /* Symbol value. */ | |
268 | fragS *frag /* Associated fragment. */) | |
49309057 | 269 | { |
b9bb4a93 | 270 | const char *preserved_copy_of_name; |
49309057 ILT |
271 | symbolS *symbolP; |
272 | ||
273 | preserved_copy_of_name = save_symbol_name (name); | |
274 | ||
1e9cc1c2 | 275 | symbolP = (symbolS *) obstack_alloc (¬es, sizeof (symbolS)); |
252b5132 | 276 | |
7c743825 | 277 | /* symbol must be born in some fixed state. This seems as good as any. */ |
252b5132 RH |
278 | memset (symbolP, 0, sizeof (symbolS)); |
279 | ||
252b5132 RH |
280 | symbolP->bsym = bfd_make_empty_symbol (stdoutput); |
281 | if (symbolP->bsym == NULL) | |
885afe7b | 282 | as_fatal ("bfd_make_empty_symbol: %s", bfd_errmsg (bfd_get_error ())); |
252b5132 RH |
283 | S_SET_NAME (symbolP, preserved_copy_of_name); |
284 | ||
285 | S_SET_SEGMENT (symbolP, segment); | |
286 | S_SET_VALUE (symbolP, valu); | |
287 | symbol_clear_list_pointers (symbolP); | |
288 | ||
289 | symbolP->sy_frag = frag; | |
252b5132 RH |
290 | |
291 | obj_symbol_new_hook (symbolP); | |
292 | ||
293 | #ifdef tc_symbol_new_hook | |
294 | tc_symbol_new_hook (symbolP); | |
295 | #endif | |
296 | ||
297 | return symbolP; | |
298 | } | |
299 | \f | |
49309057 ILT |
300 | |
301 | /* Local symbol support. If we can get away with it, we keep only a | |
302 | small amount of information for local symbols. */ | |
303 | ||
74937d39 | 304 | static symbolS *local_symbol_convert (struct local_symbol *); |
49309057 ILT |
305 | |
306 | /* Used for statistics. */ | |
307 | ||
308 | static unsigned long local_symbol_count; | |
309 | static unsigned long local_symbol_conversion_count; | |
310 | ||
311 | /* This macro is called with a symbol argument passed by reference. | |
312 | It returns whether this is a local symbol. If necessary, it | |
313 | changes its argument to the real symbol. */ | |
314 | ||
315 | #define LOCAL_SYMBOL_CHECK(s) \ | |
158184ac | 316 | (s->sy_flags.sy_local_symbol \ |
49309057 ILT |
317 | ? (local_symbol_converted_p ((struct local_symbol *) s) \ |
318 | ? (s = local_symbol_get_real_symbol ((struct local_symbol *) s), \ | |
319 | 0) \ | |
320 | : 1) \ | |
321 | : 0) | |
322 | ||
323 | /* Create a local symbol and insert it into the local hash table. */ | |
324 | ||
00ce9deb | 325 | struct local_symbol * |
91d6fa6a | 326 | local_symbol_make (const char *name, segT section, valueT val, fragS *frag) |
49309057 | 327 | { |
b9bb4a93 | 328 | const char *name_copy; |
49309057 ILT |
329 | struct local_symbol *ret; |
330 | ||
331 | ++local_symbol_count; | |
332 | ||
333 | name_copy = save_symbol_name (name); | |
334 | ||
1e9cc1c2 | 335 | ret = (struct local_symbol *) obstack_alloc (¬es, sizeof *ret); |
158184ac TG |
336 | ret->lsy_flags.sy_local_symbol = 1; |
337 | ret->lsy_flags.sy_resolved = 0; | |
49309057 ILT |
338 | ret->lsy_name = name_copy; |
339 | ret->lsy_section = section; | |
340 | local_symbol_set_frag (ret, frag); | |
91d6fa6a | 341 | ret->lsy_value = val; |
49309057 | 342 | |
5a49b8ac | 343 | hash_jam (local_hash, name_copy, (void *) ret); |
49309057 ILT |
344 | |
345 | return ret; | |
346 | } | |
347 | ||
348 | /* Convert a local symbol into a real symbol. Note that we do not | |
349 | reclaim the space used by the local symbol. */ | |
350 | ||
351 | static symbolS * | |
74937d39 | 352 | local_symbol_convert (struct local_symbol *locsym) |
49309057 ILT |
353 | { |
354 | symbolS *ret; | |
355 | ||
158184ac | 356 | gas_assert (locsym->lsy_flags.sy_local_symbol); |
49309057 ILT |
357 | if (local_symbol_converted_p (locsym)) |
358 | return local_symbol_get_real_symbol (locsym); | |
359 | ||
360 | ++local_symbol_conversion_count; | |
361 | ||
bd780143 | 362 | ret = symbol_new (locsym->lsy_name, locsym->lsy_section, locsym->lsy_value, |
49309057 ILT |
363 | local_symbol_get_frag (locsym)); |
364 | ||
365 | if (local_symbol_resolved_p (locsym)) | |
158184ac | 366 | ret->sy_flags.sy_resolved = 1; |
49309057 ILT |
367 | |
368 | /* Local symbols are always either defined or used. */ | |
158184ac | 369 | ret->sy_flags.sy_used = 1; |
49309057 | 370 | |
8c5e1ccd AO |
371 | #ifdef TC_LOCAL_SYMFIELD_CONVERT |
372 | TC_LOCAL_SYMFIELD_CONVERT (locsym, ret); | |
373 | #endif | |
374 | ||
49309057 ILT |
375 | symbol_table_insert (ret); |
376 | ||
377 | local_symbol_mark_converted (locsym); | |
378 | local_symbol_set_real_symbol (locsym, ret); | |
379 | ||
380 | hash_jam (local_hash, locsym->lsy_name, NULL); | |
381 | ||
382 | return ret; | |
383 | } | |
49309057 | 384 | \f |
a3371076 AM |
385 | static void |
386 | define_sym_at_dot (symbolS *symbolP) | |
387 | { | |
388 | symbolP->sy_frag = frag_now; | |
a3371076 AM |
389 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); |
390 | S_SET_SEGMENT (symbolP, now_seg); | |
391 | } | |
392 | ||
7c743825 KH |
393 | /* We have just seen "<name>:". |
394 | Creates a struct symbol unless it already exists. | |
395 | ||
396 | Gripes if we are redefining a symbol incompatibly (and ignores it). */ | |
252b5132 | 397 | |
252b5132 | 398 | symbolS * |
74937d39 | 399 | colon (/* Just seen "x:" - rattle symbols & frags. */ |
2b0f3761 | 400 | const char *sym_name /* Symbol name, as a canonical string. */ |
74937d39 | 401 | /* We copy this string: OK to alter later. */) |
252b5132 | 402 | { |
ed9e98c2 | 403 | symbolS *symbolP; /* Symbol we are working with. */ |
252b5132 | 404 | |
7cf10893 | 405 | /* Sun local labels go out of scope whenever a non-local symbol is |
252b5132 | 406 | defined. */ |
7be1c489 AM |
407 | if (LOCAL_LABELS_DOLLAR |
408 | && !bfd_is_local_label_name (stdoutput, sym_name)) | |
409 | dollar_label_clear (); | |
252b5132 RH |
410 | |
411 | #ifndef WORKING_DOT_WORD | |
412 | if (new_broken_words) | |
413 | { | |
414 | struct broken_word *a; | |
415 | int possible_bytes; | |
416 | fragS *frag_tmp; | |
417 | char *frag_opcode; | |
418 | ||
7cf10893 NC |
419 | if (now_seg == absolute_section) |
420 | { | |
421 | as_bad (_("cannot define symbol `%s' in absolute section"), sym_name); | |
422 | return NULL; | |
423 | } | |
1d3b2b27 | 424 | |
252b5132 RH |
425 | possible_bytes = (md_short_jump_size |
426 | + new_broken_words * md_long_jump_size); | |
427 | ||
428 | frag_tmp = frag_now; | |
429 | frag_opcode = frag_var (rs_broken_word, | |
430 | possible_bytes, | |
431 | possible_bytes, | |
432 | (relax_substateT) 0, | |
433 | (symbolS *) broken_words, | |
434 | (offsetT) 0, | |
435 | NULL); | |
436 | ||
7c743825 KH |
437 | /* We want to store the pointer to where to insert the jump |
438 | table in the fr_opcode of the rs_broken_word frag. This | |
439 | requires a little hackery. */ | |
252b5132 RH |
440 | while (frag_tmp |
441 | && (frag_tmp->fr_type != rs_broken_word | |
442 | || frag_tmp->fr_opcode)) | |
443 | frag_tmp = frag_tmp->fr_next; | |
444 | know (frag_tmp); | |
445 | frag_tmp->fr_opcode = frag_opcode; | |
446 | new_broken_words = 0; | |
447 | ||
448 | for (a = broken_words; a && a->dispfrag == 0; a = a->next_broken_word) | |
449 | a->dispfrag = frag_tmp; | |
450 | } | |
451 | #endif /* WORKING_DOT_WORD */ | |
452 | ||
cdaa5616 IS |
453 | #ifdef obj_frob_colon |
454 | obj_frob_colon (sym_name); | |
455 | #endif | |
456 | ||
252b5132 RH |
457 | if ((symbolP = symbol_find (sym_name)) != 0) |
458 | { | |
06e77878 | 459 | S_CLEAR_WEAKREFR (symbolP); |
252b5132 RH |
460 | #ifdef RESOLVE_SYMBOL_REDEFINITION |
461 | if (RESOLVE_SYMBOL_REDEFINITION (symbolP)) | |
462 | return symbolP; | |
463 | #endif | |
7c743825 | 464 | /* Now check for undefined symbols. */ |
49309057 ILT |
465 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
466 | { | |
467 | struct local_symbol *locsym = (struct local_symbol *) symbolP; | |
468 | ||
469 | if (locsym->lsy_section != undefined_section | |
470 | && (local_symbol_get_frag (locsym) != frag_now | |
471 | || locsym->lsy_section != now_seg | |
bd780143 | 472 | || locsym->lsy_value != frag_now_fix ())) |
49309057 | 473 | { |
0e389e77 | 474 | as_bad (_("symbol `%s' is already defined"), sym_name); |
49309057 ILT |
475 | return symbolP; |
476 | } | |
477 | ||
478 | locsym->lsy_section = now_seg; | |
479 | local_symbol_set_frag (locsym, frag_now); | |
bd780143 | 480 | locsym->lsy_value = frag_now_fix (); |
49309057 | 481 | } |
b54788f8 | 482 | else if (!(S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
92757bc9 JB |
483 | || S_IS_COMMON (symbolP) |
484 | || S_IS_VOLATILE (symbolP)) | |
252b5132 | 485 | { |
89cdfe57 | 486 | if (S_IS_VOLATILE (symbolP)) |
92757bc9 JB |
487 | { |
488 | symbolP = symbol_clone (symbolP, 1); | |
489 | S_SET_VALUE (symbolP, 0); | |
490 | S_CLEAR_VOLATILE (symbolP); | |
491 | } | |
252b5132 RH |
492 | if (S_GET_VALUE (symbolP) == 0) |
493 | { | |
a3371076 | 494 | define_sym_at_dot (symbolP); |
252b5132 RH |
495 | #ifdef N_UNDF |
496 | know (N_UNDF == 0); | |
7c743825 | 497 | #endif /* if we have one, it better be zero. */ |
252b5132 RH |
498 | |
499 | } | |
500 | else | |
501 | { | |
7c743825 KH |
502 | /* There are still several cases to check: |
503 | ||
504 | A .comm/.lcomm symbol being redefined as initialized | |
505 | data is OK | |
506 | ||
507 | A .comm/.lcomm symbol being redefined with a larger | |
508 | size is also OK | |
509 | ||
510 | This only used to be allowed on VMS gas, but Sun cc | |
511 | on the sparc also depends on it. */ | |
252b5132 RH |
512 | |
513 | if (((!S_IS_DEBUG (symbolP) | |
514 | && (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)) | |
515 | && S_IS_EXTERNAL (symbolP)) | |
516 | || S_GET_SEGMENT (symbolP) == bss_section) | |
517 | && (now_seg == data_section | |
b3ce1bf7 | 518 | || now_seg == bss_section |
252b5132 RH |
519 | || now_seg == S_GET_SEGMENT (symbolP))) |
520 | { | |
7c743825 | 521 | /* Select which of the 2 cases this is. */ |
252b5132 RH |
522 | if (now_seg != data_section) |
523 | { | |
7c743825 KH |
524 | /* New .comm for prev .comm symbol. |
525 | ||
526 | If the new size is larger we just change its | |
527 | value. If the new size is smaller, we ignore | |
528 | this symbol. */ | |
252b5132 RH |
529 | if (S_GET_VALUE (symbolP) |
530 | < ((unsigned) frag_now_fix ())) | |
531 | { | |
532 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
533 | } | |
534 | } | |
535 | else | |
536 | { | |
537 | /* It is a .comm/.lcomm being converted to initialized | |
538 | data. */ | |
a3371076 | 539 | define_sym_at_dot (symbolP); |
252b5132 RH |
540 | } |
541 | } | |
542 | else | |
543 | { | |
a8eb42a8 | 544 | #if (!defined (OBJ_AOUT) && !defined (OBJ_MAYBE_AOUT)) |
4c63da97 | 545 | static const char *od_buf = ""; |
252b5132 | 546 | #else |
4c63da97 AM |
547 | char od_buf[100]; |
548 | od_buf[0] = '\0'; | |
4c63da97 | 549 | if (OUTPUT_FLAVOR == bfd_target_aout_flavour) |
d1a6c242 KH |
550 | sprintf (od_buf, "%d.%d.", |
551 | S_GET_OTHER (symbolP), | |
552 | S_GET_DESC (symbolP)); | |
4c63da97 | 553 | #endif |
0e389e77 | 554 | as_bad (_("symbol `%s' is already defined as \"%s\"/%s%ld"), |
252b5132 RH |
555 | sym_name, |
556 | segment_name (S_GET_SEGMENT (symbolP)), | |
4c63da97 | 557 | od_buf, |
252b5132 | 558 | (long) S_GET_VALUE (symbolP)); |
252b5132 | 559 | } |
7c743825 | 560 | } /* if the undefined symbol has no value */ |
252b5132 RH |
561 | } |
562 | else | |
563 | { | |
7c743825 | 564 | /* Don't blow up if the definition is the same. */ |
252b5132 RH |
565 | if (!(frag_now == symbolP->sy_frag |
566 | && S_GET_VALUE (symbolP) == frag_now_fix () | |
567 | && S_GET_SEGMENT (symbolP) == now_seg)) | |
92757bc9 JB |
568 | { |
569 | as_bad (_("symbol `%s' is already defined"), sym_name); | |
570 | symbolP = symbol_clone (symbolP, 0); | |
a3371076 | 571 | define_sym_at_dot (symbolP); |
92757bc9 | 572 | } |
d4887adc | 573 | } |
252b5132 RH |
574 | |
575 | } | |
49309057 ILT |
576 | else if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, sym_name)) |
577 | { | |
578 | symbolP = (symbolS *) local_symbol_make (sym_name, now_seg, | |
579 | (valueT) frag_now_fix (), | |
580 | frag_now); | |
581 | } | |
252b5132 RH |
582 | else |
583 | { | |
584 | symbolP = symbol_new (sym_name, now_seg, (valueT) frag_now_fix (), | |
585 | frag_now); | |
252b5132 RH |
586 | |
587 | symbol_table_insert (symbolP); | |
d4887adc | 588 | } |
252b5132 RH |
589 | |
590 | if (mri_common_symbol != NULL) | |
591 | { | |
592 | /* This symbol is actually being defined within an MRI common | |
1d3b2b27 | 593 | section. This requires special handling. */ |
49309057 ILT |
594 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
595 | symbolP = local_symbol_convert ((struct local_symbol *) symbolP); | |
252b5132 RH |
596 | symbolP->sy_value.X_op = O_symbol; |
597 | symbolP->sy_value.X_add_symbol = mri_common_symbol; | |
598 | symbolP->sy_value.X_add_number = S_GET_VALUE (mri_common_symbol); | |
599 | symbolP->sy_frag = &zero_address_frag; | |
600 | S_SET_SEGMENT (symbolP, expr_section); | |
158184ac | 601 | symbolP->sy_flags.sy_mri_common = 1; |
252b5132 RH |
602 | } |
603 | ||
604 | #ifdef tc_frob_label | |
605 | tc_frob_label (symbolP); | |
606 | #endif | |
607 | #ifdef obj_frob_label | |
608 | obj_frob_label (symbolP); | |
609 | #endif | |
610 | ||
611 | return symbolP; | |
612 | } | |
613 | \f | |
7c743825 | 614 | /* Die if we can't insert the symbol. */ |
252b5132 | 615 | |
7c743825 | 616 | void |
74937d39 | 617 | symbol_table_insert (symbolS *symbolP) |
252b5132 | 618 | { |
ed9e98c2 | 619 | const char *error_string; |
252b5132 RH |
620 | |
621 | know (symbolP); | |
622 | know (S_GET_NAME (symbolP)); | |
623 | ||
49309057 ILT |
624 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
625 | { | |
626 | error_string = hash_jam (local_hash, S_GET_NAME (symbolP), | |
5a49b8ac | 627 | (void *) symbolP); |
49309057 | 628 | if (error_string != NULL) |
0e389e77 | 629 | as_fatal (_("inserting \"%s\" into symbol table failed: %s"), |
49309057 ILT |
630 | S_GET_NAME (symbolP), error_string); |
631 | return; | |
632 | } | |
633 | ||
5a49b8ac | 634 | if ((error_string = hash_jam (sy_hash, S_GET_NAME (symbolP), (void *) symbolP))) |
252b5132 | 635 | { |
0e389e77 | 636 | as_fatal (_("inserting \"%s\" into symbol table failed: %s"), |
252b5132 | 637 | S_GET_NAME (symbolP), error_string); |
7c743825 KH |
638 | } /* on error */ |
639 | } | |
252b5132 | 640 | \f |
7c743825 KH |
641 | /* If a symbol name does not exist, create it as undefined, and insert |
642 | it into the symbol table. Return a pointer to it. */ | |
643 | ||
252b5132 | 644 | symbolS * |
74937d39 | 645 | symbol_find_or_make (const char *name) |
252b5132 | 646 | { |
ed9e98c2 | 647 | symbolS *symbolP; |
252b5132 RH |
648 | |
649 | symbolP = symbol_find (name); | |
650 | ||
651 | if (symbolP == NULL) | |
652 | { | |
49309057 ILT |
653 | if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, name)) |
654 | { | |
655 | symbolP = md_undefined_symbol ((char *) name); | |
656 | if (symbolP != NULL) | |
657 | return symbolP; | |
658 | ||
659 | symbolP = (symbolS *) local_symbol_make (name, undefined_section, | |
660 | (valueT) 0, | |
661 | &zero_address_frag); | |
662 | return symbolP; | |
663 | } | |
49309057 | 664 | |
252b5132 RH |
665 | symbolP = symbol_make (name); |
666 | ||
667 | symbol_table_insert (symbolP); | |
668 | } /* if symbol wasn't found */ | |
669 | ||
670 | return (symbolP); | |
7c743825 | 671 | } |
252b5132 RH |
672 | |
673 | symbolS * | |
74937d39 | 674 | symbol_make (const char *name) |
252b5132 RH |
675 | { |
676 | symbolS *symbolP; | |
677 | ||
7c743825 | 678 | /* Let the machine description default it, e.g. for register names. */ |
252b5132 RH |
679 | symbolP = md_undefined_symbol ((char *) name); |
680 | ||
681 | if (!symbolP) | |
682 | symbolP = symbol_new (name, undefined_section, (valueT) 0, &zero_address_frag); | |
683 | ||
684 | return (symbolP); | |
7c743825 | 685 | } |
252b5132 | 686 | |
9497f5ac NC |
687 | symbolS * |
688 | symbol_clone (symbolS *orgsymP, int replace) | |
689 | { | |
690 | symbolS *newsymP; | |
6a2b6326 | 691 | asymbol *bsymorg, *bsymnew; |
9497f5ac | 692 | |
4a826962 MR |
693 | /* Make sure we never clone the dot special symbol. */ |
694 | gas_assert (orgsymP != &dot_symbol); | |
695 | ||
9497f5ac NC |
696 | /* Running local_symbol_convert on a clone that's not the one currently |
697 | in local_hash would incorrectly replace the hash entry. Thus the | |
698 | symbol must be converted here. Note that the rest of the function | |
699 | depends on not encountering an unconverted symbol. */ | |
700 | if (LOCAL_SYMBOL_CHECK (orgsymP)) | |
701 | orgsymP = local_symbol_convert ((struct local_symbol *) orgsymP); | |
6a2b6326 | 702 | bsymorg = orgsymP->bsym; |
9497f5ac | 703 | |
1e9cc1c2 | 704 | newsymP = (symbolS *) obstack_alloc (¬es, sizeof (*newsymP)); |
9497f5ac | 705 | *newsymP = *orgsymP; |
6a2b6326 JB |
706 | bsymnew = bfd_make_empty_symbol (bfd_asymbol_bfd (bsymorg)); |
707 | if (bsymnew == NULL) | |
885afe7b | 708 | as_fatal ("bfd_make_empty_symbol: %s", bfd_errmsg (bfd_get_error ())); |
6a2b6326 JB |
709 | newsymP->bsym = bsymnew; |
710 | bsymnew->name = bsymorg->name; | |
25313d6a | 711 | bsymnew->flags = bsymorg->flags & ~BSF_SECTION_SYM; |
9d75b288 | 712 | bsymnew->section = bsymorg->section; |
6a2b6326 JB |
713 | bfd_copy_private_symbol_data (bfd_asymbol_bfd (bsymorg), bsymorg, |
714 | bfd_asymbol_bfd (bsymnew), bsymnew); | |
715 | ||
716 | #ifdef obj_symbol_clone_hook | |
717 | obj_symbol_clone_hook (newsymP, orgsymP); | |
718 | #endif | |
719 | ||
720 | #ifdef tc_symbol_clone_hook | |
721 | tc_symbol_clone_hook (newsymP, orgsymP); | |
722 | #endif | |
9497f5ac NC |
723 | |
724 | if (replace) | |
725 | { | |
726 | if (symbol_rootP == orgsymP) | |
727 | symbol_rootP = newsymP; | |
728 | else if (orgsymP->sy_previous) | |
729 | { | |
730 | orgsymP->sy_previous->sy_next = newsymP; | |
731 | orgsymP->sy_previous = NULL; | |
732 | } | |
733 | if (symbol_lastP == orgsymP) | |
734 | symbol_lastP = newsymP; | |
735 | else if (orgsymP->sy_next) | |
736 | orgsymP->sy_next->sy_previous = newsymP; | |
73e24c68 AM |
737 | |
738 | /* Symbols that won't be output can't be external. */ | |
739 | S_CLEAR_EXTERNAL (orgsymP); | |
bdf128d6 | 740 | orgsymP->sy_previous = orgsymP->sy_next = orgsymP; |
9497f5ac NC |
741 | debug_verify_symchain (symbol_rootP, symbol_lastP); |
742 | ||
743 | symbol_table_insert (newsymP); | |
744 | } | |
bdf128d6 | 745 | else |
73e24c68 AM |
746 | { |
747 | /* Symbols that won't be output can't be external. */ | |
748 | S_CLEAR_EXTERNAL (newsymP); | |
749 | newsymP->sy_previous = newsymP->sy_next = newsymP; | |
750 | } | |
9497f5ac NC |
751 | |
752 | return newsymP; | |
753 | } | |
754 | ||
38cf168b AM |
755 | /* If S is a local symbol that has been converted, return the |
756 | converted symbol. Otherwise return S. */ | |
757 | ||
758 | static inline symbolS * | |
759 | get_real_sym (symbolS *s) | |
760 | { | |
761 | if (s != NULL | |
762 | && s->sy_flags.sy_local_symbol | |
763 | && local_symbol_converted_p ((struct local_symbol *) s)) | |
764 | s = local_symbol_get_real_symbol ((struct local_symbol *) s); | |
765 | return s; | |
766 | } | |
767 | ||
9497f5ac NC |
768 | /* Referenced symbols, if they are forward references, need to be cloned |
769 | (without replacing the original) so that the value of the referenced | |
38cf168b | 770 | symbols at the point of use is saved by the clone. */ |
9497f5ac NC |
771 | |
772 | #undef symbol_clone_if_forward_ref | |
773 | symbolS * | |
774 | symbol_clone_if_forward_ref (symbolS *symbolP, int is_forward) | |
775 | { | |
776 | if (symbolP && !LOCAL_SYMBOL_CHECK (symbolP)) | |
777 | { | |
38cf168b AM |
778 | symbolS *orig_add_symbol = get_real_sym (symbolP->sy_value.X_add_symbol); |
779 | symbolS *orig_op_symbol = get_real_sym (symbolP->sy_value.X_op_symbol); | |
780 | symbolS *add_symbol = orig_add_symbol; | |
781 | symbolS *op_symbol = orig_op_symbol; | |
9497f5ac | 782 | |
158184ac | 783 | if (symbolP->sy_flags.sy_forward_ref) |
9497f5ac NC |
784 | is_forward = 1; |
785 | ||
786 | if (is_forward) | |
787 | { | |
788 | /* assign_symbol() clones volatile symbols; pre-existing expressions | |
789 | hold references to the original instance, but want the current | |
790 | value. Just repeat the lookup. */ | |
791 | if (add_symbol && S_IS_VOLATILE (add_symbol)) | |
792 | add_symbol = symbol_find_exact (S_GET_NAME (add_symbol)); | |
793 | if (op_symbol && S_IS_VOLATILE (op_symbol)) | |
794 | op_symbol = symbol_find_exact (S_GET_NAME (op_symbol)); | |
795 | } | |
796 | ||
797 | /* Re-using sy_resolving here, as this routine cannot get called from | |
798 | symbol resolution code. */ | |
158184ac TG |
799 | if ((symbolP->bsym->section == expr_section |
800 | || symbolP->sy_flags.sy_forward_ref) | |
801 | && !symbolP->sy_flags.sy_resolving) | |
9497f5ac | 802 | { |
158184ac | 803 | symbolP->sy_flags.sy_resolving = 1; |
9497f5ac NC |
804 | add_symbol = symbol_clone_if_forward_ref (add_symbol, is_forward); |
805 | op_symbol = symbol_clone_if_forward_ref (op_symbol, is_forward); | |
158184ac | 806 | symbolP->sy_flags.sy_resolving = 0; |
9497f5ac NC |
807 | } |
808 | ||
158184ac | 809 | if (symbolP->sy_flags.sy_forward_ref |
38cf168b AM |
810 | || add_symbol != orig_add_symbol |
811 | || op_symbol != orig_op_symbol) | |
3df4e177 | 812 | { |
4a826962 MR |
813 | if (symbolP != &dot_symbol) |
814 | { | |
815 | symbolP = symbol_clone (symbolP, 0); | |
158184ac | 816 | symbolP->sy_flags.sy_resolving = 0; |
4a826962 MR |
817 | } |
818 | else | |
a1facbec MR |
819 | { |
820 | symbolP = symbol_temp_new_now (); | |
821 | #ifdef tc_new_dot_label | |
822 | tc_new_dot_label (symbolP); | |
823 | #endif | |
824 | } | |
3df4e177 | 825 | } |
9497f5ac NC |
826 | |
827 | symbolP->sy_value.X_add_symbol = add_symbol; | |
828 | symbolP->sy_value.X_op_symbol = op_symbol; | |
829 | } | |
830 | ||
831 | return symbolP; | |
832 | } | |
833 | ||
b7d6ed97 | 834 | symbolS * |
74937d39 | 835 | symbol_temp_new (segT seg, valueT ofs, fragS *frag) |
b7d6ed97 | 836 | { |
756d1d01 | 837 | return symbol_new (FAKE_LABEL_NAME, seg, ofs, frag); |
b7d6ed97 RH |
838 | } |
839 | ||
840 | symbolS * | |
74937d39 | 841 | symbol_temp_new_now (void) |
b7d6ed97 RH |
842 | { |
843 | return symbol_temp_new (now_seg, frag_now_fix (), frag_now); | |
844 | } | |
845 | ||
d18d1999 CE |
846 | symbolS * |
847 | symbol_temp_new_now_octets (void) | |
848 | { | |
e2b9a97e | 849 | return symbol_temp_new (now_seg, frag_now_fix_octets (), frag_now); |
d18d1999 CE |
850 | } |
851 | ||
b7d6ed97 | 852 | symbolS * |
74937d39 | 853 | symbol_temp_make (void) |
b7d6ed97 | 854 | { |
756d1d01 | 855 | return symbol_make (FAKE_LABEL_NAME); |
b7d6ed97 RH |
856 | } |
857 | ||
7c743825 KH |
858 | /* Implement symbol table lookup. |
859 | In: A symbol's name as a string: '\0' can't be part of a symbol name. | |
860 | Out: NULL if the name was not in the symbol table, else the address | |
861 | of a struct symbol associated with that name. */ | |
252b5132 | 862 | |
9758f3fc | 863 | symbolS * |
74937d39 | 864 | symbol_find_exact (const char *name) |
06e77878 AO |
865 | { |
866 | return symbol_find_exact_noref (name, 0); | |
867 | } | |
868 | ||
869 | symbolS * | |
870 | symbol_find_exact_noref (const char *name, int noref) | |
9758f3fc | 871 | { |
7be1c489 | 872 | struct local_symbol *locsym; |
06e77878 | 873 | symbolS* sym; |
9758f3fc | 874 | |
7be1c489 AM |
875 | locsym = (struct local_symbol *) hash_find (local_hash, name); |
876 | if (locsym != NULL) | |
877 | return (symbolS *) locsym; | |
9758f3fc | 878 | |
06e77878 AO |
879 | sym = ((symbolS *) hash_find (sy_hash, name)); |
880 | ||
881 | /* Any references to the symbol, except for the reference in | |
882 | .weakref, must clear this flag, such that the symbol does not | |
883 | turn into a weak symbol. Note that we don't have to handle the | |
884 | local_symbol case, since a weakrefd is always promoted out of the | |
885 | local_symbol table when it is turned into a weak symbol. */ | |
886 | if (sym && ! noref) | |
887 | S_CLEAR_WEAKREFD (sym); | |
888 | ||
889 | return sym; | |
9758f3fc AM |
890 | } |
891 | ||
252b5132 | 892 | symbolS * |
91c4c449 | 893 | symbol_find (const char *name) |
06e77878 AO |
894 | { |
895 | return symbol_find_noref (name, 0); | |
896 | } | |
897 | ||
898 | symbolS * | |
899 | symbol_find_noref (const char *name, int noref) | |
252b5132 | 900 | { |
e1fa0163 NC |
901 | symbolS * result; |
902 | char * copy = NULL; | |
903 | ||
252b5132 RH |
904 | #ifdef tc_canonicalize_symbol_name |
905 | { | |
e1fa0163 | 906 | copy = xstrdup (name); |
252b5132 RH |
907 | name = tc_canonicalize_symbol_name (copy); |
908 | } | |
909 | #endif | |
910 | ||
911 | if (! symbols_case_sensitive) | |
912 | { | |
03987ced | 913 | const char *orig; |
e1fa0163 | 914 | char *copy2 = NULL; |
03987ced RH |
915 | unsigned char c; |
916 | ||
917 | orig = name; | |
e1fa0163 NC |
918 | if (copy != NULL) |
919 | copy2 = copy; | |
325801bd | 920 | name = copy = XNEWVEC (char, strlen (name) + 1); |
03987ced RH |
921 | |
922 | while ((c = *orig++) != '\0') | |
e1fa0163 | 923 | *copy++ = TOUPPER (c); |
03987ced | 924 | *copy = '\0'; |
e1fa0163 NC |
925 | |
926 | if (copy2 != NULL) | |
927 | free (copy2); | |
928 | copy = (char *) name; | |
252b5132 RH |
929 | } |
930 | ||
e1fa0163 NC |
931 | result = symbol_find_exact_noref (name, noref); |
932 | if (copy != NULL) | |
933 | free (copy); | |
934 | return result; | |
252b5132 RH |
935 | } |
936 | ||
7c743825 KH |
937 | /* Once upon a time, symbols were kept in a singly linked list. At |
938 | least coff needs to be able to rearrange them from time to time, for | |
939 | which a doubly linked list is much more convenient. Loic did these | |
940 | as macros which seemed dangerous to me so they're now functions. | |
941 | xoxorich. */ | |
942 | ||
943 | /* Link symbol ADDME after symbol TARGET in the chain. */ | |
252b5132 | 944 | |
7c743825 | 945 | void |
74937d39 KH |
946 | symbol_append (symbolS *addme, symbolS *target, |
947 | symbolS **rootPP, symbolS **lastPP) | |
252b5132 | 948 | { |
49309057 ILT |
949 | if (LOCAL_SYMBOL_CHECK (addme)) |
950 | abort (); | |
951 | if (target != NULL && LOCAL_SYMBOL_CHECK (target)) | |
952 | abort (); | |
953 | ||
252b5132 RH |
954 | if (target == NULL) |
955 | { | |
956 | know (*rootPP == NULL); | |
957 | know (*lastPP == NULL); | |
958 | addme->sy_next = NULL; | |
252b5132 | 959 | addme->sy_previous = NULL; |
252b5132 RH |
960 | *rootPP = addme; |
961 | *lastPP = addme; | |
962 | return; | |
7c743825 | 963 | } /* if the list is empty */ |
252b5132 RH |
964 | |
965 | if (target->sy_next != NULL) | |
966 | { | |
252b5132 | 967 | target->sy_next->sy_previous = addme; |
252b5132 RH |
968 | } |
969 | else | |
970 | { | |
971 | know (*lastPP == target); | |
972 | *lastPP = addme; | |
7c743825 | 973 | } /* if we have a next */ |
252b5132 RH |
974 | |
975 | addme->sy_next = target->sy_next; | |
976 | target->sy_next = addme; | |
252b5132 | 977 | addme->sy_previous = target; |
252b5132 RH |
978 | |
979 | debug_verify_symchain (symbol_rootP, symbol_lastP); | |
980 | } | |
981 | ||
7c743825 KH |
982 | /* Set the chain pointers of SYMBOL to null. */ |
983 | ||
984 | void | |
74937d39 | 985 | symbol_clear_list_pointers (symbolS *symbolP) |
252b5132 | 986 | { |
49309057 ILT |
987 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
988 | abort (); | |
252b5132 | 989 | symbolP->sy_next = NULL; |
252b5132 | 990 | symbolP->sy_previous = NULL; |
252b5132 RH |
991 | } |
992 | ||
7c743825 KH |
993 | /* Remove SYMBOLP from the list. */ |
994 | ||
995 | void | |
74937d39 | 996 | symbol_remove (symbolS *symbolP, symbolS **rootPP, symbolS **lastPP) |
252b5132 | 997 | { |
49309057 ILT |
998 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
999 | abort (); | |
1000 | ||
252b5132 RH |
1001 | if (symbolP == *rootPP) |
1002 | { | |
1003 | *rootPP = symbolP->sy_next; | |
7c743825 | 1004 | } /* if it was the root */ |
252b5132 RH |
1005 | |
1006 | if (symbolP == *lastPP) | |
1007 | { | |
1008 | *lastPP = symbolP->sy_previous; | |
7c743825 | 1009 | } /* if it was the tail */ |
252b5132 RH |
1010 | |
1011 | if (symbolP->sy_next != NULL) | |
1012 | { | |
1013 | symbolP->sy_next->sy_previous = symbolP->sy_previous; | |
7c743825 | 1014 | } /* if not last */ |
252b5132 RH |
1015 | |
1016 | if (symbolP->sy_previous != NULL) | |
1017 | { | |
1018 | symbolP->sy_previous->sy_next = symbolP->sy_next; | |
7c743825 | 1019 | } /* if not first */ |
252b5132 RH |
1020 | |
1021 | debug_verify_symchain (*rootPP, *lastPP); | |
1022 | } | |
1023 | ||
7c743825 KH |
1024 | /* Link symbol ADDME before symbol TARGET in the chain. */ |
1025 | ||
1026 | void | |
74937d39 KH |
1027 | symbol_insert (symbolS *addme, symbolS *target, |
1028 | symbolS **rootPP, symbolS **lastPP ATTRIBUTE_UNUSED) | |
252b5132 | 1029 | { |
49309057 ILT |
1030 | if (LOCAL_SYMBOL_CHECK (addme)) |
1031 | abort (); | |
1032 | if (LOCAL_SYMBOL_CHECK (target)) | |
1033 | abort (); | |
1034 | ||
252b5132 RH |
1035 | if (target->sy_previous != NULL) |
1036 | { | |
1037 | target->sy_previous->sy_next = addme; | |
1038 | } | |
1039 | else | |
1040 | { | |
1041 | know (*rootPP == target); | |
1042 | *rootPP = addme; | |
7c743825 | 1043 | } /* if not first */ |
252b5132 RH |
1044 | |
1045 | addme->sy_previous = target->sy_previous; | |
1046 | target->sy_previous = addme; | |
1047 | addme->sy_next = target; | |
1048 | ||
1049 | debug_verify_symchain (*rootPP, *lastPP); | |
1050 | } | |
1051 | ||
7c743825 | 1052 | void |
74937d39 | 1053 | verify_symbol_chain (symbolS *rootP, symbolS *lastP) |
252b5132 RH |
1054 | { |
1055 | symbolS *symbolP = rootP; | |
1056 | ||
1057 | if (symbolP == NULL) | |
1058 | return; | |
1059 | ||
1060 | for (; symbol_next (symbolP) != NULL; symbolP = symbol_next (symbolP)) | |
1061 | { | |
9c2799c2 | 1062 | gas_assert (symbolP->bsym != NULL); |
158184ac | 1063 | gas_assert (symbolP->sy_flags.sy_local_symbol == 0); |
9c2799c2 | 1064 | gas_assert (symbolP->sy_next->sy_previous == symbolP); |
252b5132 RH |
1065 | } |
1066 | ||
9c2799c2 | 1067 | gas_assert (lastP == symbolP); |
252b5132 RH |
1068 | } |
1069 | ||
8d1015a8 AM |
1070 | int |
1071 | symbol_on_chain (symbolS *s, symbolS *rootPP, symbolS *lastPP) | |
1072 | { | |
1073 | return (!LOCAL_SYMBOL_CHECK (s) | |
1074 | && ((s->sy_next != s | |
1075 | && s->sy_next != NULL | |
1076 | && s->sy_next->sy_previous == s) | |
1077 | || s == lastPP) | |
1078 | && ((s->sy_previous != s | |
1079 | && s->sy_previous != NULL | |
1080 | && s->sy_previous->sy_next == s) | |
1081 | || s == rootPP)); | |
1082 | } | |
1083 | ||
280d71bf DB |
1084 | #ifdef OBJ_COMPLEX_RELC |
1085 | ||
1086 | static int | |
1087 | use_complex_relocs_for (symbolS * symp) | |
1088 | { | |
1089 | switch (symp->sy_value.X_op) | |
1090 | { | |
1091 | case O_constant: | |
1092 | return 0; | |
1093 | ||
280d71bf DB |
1094 | case O_multiply: |
1095 | case O_divide: | |
1096 | case O_modulus: | |
1097 | case O_left_shift: | |
1098 | case O_right_shift: | |
1099 | case O_bit_inclusive_or: | |
1100 | case O_bit_or_not: | |
1101 | case O_bit_exclusive_or: | |
1102 | case O_bit_and: | |
1103 | case O_add: | |
1104 | case O_subtract: | |
1105 | case O_eq: | |
1106 | case O_ne: | |
1107 | case O_lt: | |
1108 | case O_le: | |
1109 | case O_ge: | |
1110 | case O_gt: | |
1111 | case O_logical_and: | |
1112 | case O_logical_or: | |
0f1309c8 | 1113 | if ((S_IS_COMMON (symp->sy_value.X_op_symbol) |
280d71bf | 1114 | || S_IS_LOCAL (symp->sy_value.X_op_symbol)) |
280d71bf | 1115 | && S_IS_DEFINED (symp->sy_value.X_op_symbol) |
280d71bf | 1116 | && S_GET_SEGMENT (symp->sy_value.X_op_symbol) != expr_section) |
0f1309c8 AM |
1117 | { |
1118 | case O_symbol: | |
1119 | case O_symbol_rva: | |
1120 | case O_uminus: | |
1121 | case O_bit_not: | |
1122 | case O_logical_not: | |
1123 | if ((S_IS_COMMON (symp->sy_value.X_add_symbol) | |
1124 | || S_IS_LOCAL (symp->sy_value.X_add_symbol)) | |
1125 | && S_IS_DEFINED (symp->sy_value.X_add_symbol) | |
1126 | && S_GET_SEGMENT (symp->sy_value.X_add_symbol) != expr_section) | |
1127 | return 0; | |
1128 | } | |
280d71bf | 1129 | break; |
34bca508 | 1130 | |
280d71bf DB |
1131 | default: |
1132 | break; | |
1133 | } | |
1134 | return 1; | |
1135 | } | |
1136 | #endif | |
1137 | ||
0909233e | 1138 | static void |
5a0ade8b | 1139 | report_op_error (symbolS *symp, symbolS *left, operatorT op, symbolS *right) |
0909233e | 1140 | { |
3b4dbbbf | 1141 | const char *file; |
0909233e | 1142 | unsigned int line; |
5a0ade8b AM |
1143 | segT seg_left = left ? S_GET_SEGMENT (left) : 0; |
1144 | segT seg_right = S_GET_SEGMENT (right); | |
1145 | const char *opname; | |
1146 | ||
1147 | switch (op) | |
1148 | { | |
1149 | default: | |
1150 | abort (); | |
1151 | return; | |
1152 | ||
1153 | case O_uminus: opname = "-"; break; | |
1154 | case O_bit_not: opname = "~"; break; | |
1155 | case O_logical_not: opname = "!"; break; | |
1156 | case O_multiply: opname = "*"; break; | |
1157 | case O_divide: opname = "/"; break; | |
1158 | case O_modulus: opname = "%"; break; | |
1159 | case O_left_shift: opname = "<<"; break; | |
1160 | case O_right_shift: opname = ">>"; break; | |
1161 | case O_bit_inclusive_or: opname = "|"; break; | |
1162 | case O_bit_or_not: opname = "|~"; break; | |
1163 | case O_bit_exclusive_or: opname = "^"; break; | |
1164 | case O_bit_and: opname = "&"; break; | |
1165 | case O_add: opname = "+"; break; | |
1166 | case O_subtract: opname = "-"; break; | |
1167 | case O_eq: opname = "=="; break; | |
1168 | case O_ne: opname = "!="; break; | |
1169 | case O_lt: opname = "<"; break; | |
1170 | case O_le: opname = "<="; break; | |
1171 | case O_ge: opname = ">="; break; | |
1172 | case O_gt: opname = ">"; break; | |
1173 | case O_logical_and: opname = "&&"; break; | |
1174 | case O_logical_or: opname = "||"; break; | |
1175 | } | |
1d3b2b27 | 1176 | |
0909233e AM |
1177 | if (expr_symbol_where (symp, &file, &line)) |
1178 | { | |
5a0ade8b | 1179 | if (left) |
0909233e | 1180 | as_bad_where (file, line, |
5a0ade8b AM |
1181 | _("invalid operands (%s and %s sections) for `%s'"), |
1182 | seg_left->name, seg_right->name, opname); | |
1183 | else | |
0909233e | 1184 | as_bad_where (file, line, |
5a0ade8b AM |
1185 | _("invalid operand (%s section) for `%s'"), |
1186 | seg_right->name, opname); | |
0909233e AM |
1187 | } |
1188 | else | |
1189 | { | |
5a0ade8b AM |
1190 | const char *sname = S_GET_NAME (symp); |
1191 | ||
1192 | if (left) | |
1193 | as_bad (_("invalid operands (%s and %s sections) for `%s' when setting `%s'"), | |
1194 | seg_left->name, seg_right->name, opname, sname); | |
1195 | else | |
1196 | as_bad (_("invalid operand (%s section) for `%s' when setting `%s'"), | |
1197 | seg_right->name, opname, sname); | |
0909233e AM |
1198 | } |
1199 | } | |
1200 | ||
252b5132 RH |
1201 | /* Resolve the value of a symbol. This is called during the final |
1202 | pass over the symbol table to resolve any symbols with complex | |
1203 | values. */ | |
1204 | ||
1205 | valueT | |
74937d39 | 1206 | resolve_symbol_value (symbolS *symp) |
252b5132 RH |
1207 | { |
1208 | int resolved; | |
1903f138 | 1209 | valueT final_val; |
252b5132 RH |
1210 | segT final_seg; |
1211 | ||
49309057 ILT |
1212 | if (LOCAL_SYMBOL_CHECK (symp)) |
1213 | { | |
1214 | struct local_symbol *locsym = (struct local_symbol *) symp; | |
1215 | ||
bd780143 | 1216 | final_val = locsym->lsy_value; |
49309057 | 1217 | if (local_symbol_resolved_p (locsym)) |
bd780143 | 1218 | return final_val; |
49309057 | 1219 | |
61826503 CE |
1220 | /* Symbols whose section has SEC_ELF_OCTETS set, |
1221 | resolve to octets instead of target bytes. */ | |
1222 | if (locsym->lsy_section->flags & SEC_OCTETS) | |
1223 | final_val += local_symbol_get_frag (locsym)->fr_address; | |
1224 | else | |
1225 | final_val += (local_symbol_get_frag (locsym)->fr_address | |
1226 | / OCTETS_PER_BYTE); | |
49309057 | 1227 | |
6386f3a7 | 1228 | if (finalize_syms) |
49309057 | 1229 | { |
bd780143 | 1230 | locsym->lsy_value = final_val; |
49309057 ILT |
1231 | local_symbol_mark_resolved (locsym); |
1232 | } | |
1233 | ||
1234 | return final_val; | |
1235 | } | |
1236 | ||
158184ac | 1237 | if (symp->sy_flags.sy_resolved) |
252b5132 | 1238 | { |
1903f138 | 1239 | final_val = 0; |
2a50b401 | 1240 | while (symp->sy_value.X_op == O_symbol) |
1903f138 AM |
1241 | { |
1242 | final_val += symp->sy_value.X_add_number; | |
1243 | symp = symp->sy_value.X_add_symbol; | |
2a50b401 AM |
1244 | if (LOCAL_SYMBOL_CHECK (symp)) |
1245 | { | |
1246 | struct local_symbol *locsym = (struct local_symbol *) symp; | |
1247 | final_val += locsym->lsy_value; | |
1248 | return final_val; | |
1249 | } | |
1250 | if (!symp->sy_flags.sy_resolved) | |
1251 | return 0; | |
1903f138 | 1252 | } |
252b5132 | 1253 | if (symp->sy_value.X_op == O_constant) |
1903f138 | 1254 | final_val += symp->sy_value.X_add_number; |
252b5132 | 1255 | else |
1903f138 AM |
1256 | final_val = 0; |
1257 | return final_val; | |
252b5132 RH |
1258 | } |
1259 | ||
1260 | resolved = 0; | |
1261 | final_seg = S_GET_SEGMENT (symp); | |
1262 | ||
158184ac | 1263 | if (symp->sy_flags.sy_resolving) |
252b5132 | 1264 | { |
6386f3a7 | 1265 | if (finalize_syms) |
0e389e77 | 1266 | as_bad (_("symbol definition loop encountered at `%s'"), |
7c743825 | 1267 | S_GET_NAME (symp)); |
252b5132 RH |
1268 | final_val = 0; |
1269 | resolved = 1; | |
1270 | } | |
280d71bf DB |
1271 | #ifdef OBJ_COMPLEX_RELC |
1272 | else if (final_seg == expr_section | |
1273 | && use_complex_relocs_for (symp)) | |
1274 | { | |
1275 | symbolS * relc_symbol = NULL; | |
1276 | char * relc_symbol_name = NULL; | |
1277 | ||
1278 | relc_symbol_name = symbol_relc_make_expr (& symp->sy_value); | |
1279 | ||
1280 | /* For debugging, print out conversion input & output. */ | |
1281 | #ifdef DEBUG_SYMS | |
1282 | print_expr (& symp->sy_value); | |
1283 | if (relc_symbol_name) | |
1284 | fprintf (stderr, "-> relc symbol: %s\n", relc_symbol_name); | |
1285 | #endif | |
1286 | ||
1287 | if (relc_symbol_name != NULL) | |
1288 | relc_symbol = symbol_new (relc_symbol_name, undefined_section, | |
1289 | 0, & zero_address_frag); | |
1290 | ||
1291 | if (relc_symbol == NULL) | |
1292 | { | |
1293 | as_bad (_("cannot convert expression symbol %s to complex relocation"), | |
1294 | S_GET_NAME (symp)); | |
1295 | resolved = 0; | |
1296 | } | |
1297 | else | |
1298 | { | |
1299 | symbol_table_insert (relc_symbol); | |
1300 | ||
1301 | /* S_CLEAR_EXTERNAL (relc_symbol); */ | |
1302 | if (symp->bsym->flags & BSF_SRELC) | |
1303 | relc_symbol->bsym->flags |= BSF_SRELC; | |
1304 | else | |
34bca508 | 1305 | relc_symbol->bsym->flags |= BSF_RELC; |
280d71bf DB |
1306 | /* symp->bsym->flags |= BSF_RELC; */ |
1307 | copy_symbol_attributes (symp, relc_symbol); | |
1308 | symp->sy_value.X_op = O_symbol; | |
1309 | symp->sy_value.X_add_symbol = relc_symbol; | |
1310 | symp->sy_value.X_add_number = 0; | |
1311 | resolved = 1; | |
1312 | } | |
1313 | ||
1903f138 | 1314 | final_val = 0; |
280d71bf DB |
1315 | final_seg = undefined_section; |
1316 | goto exit_dont_set_value; | |
1317 | } | |
1318 | #endif | |
252b5132 RH |
1319 | else |
1320 | { | |
1321 | symbolS *add_symbol, *op_symbol; | |
1322 | offsetT left, right; | |
1323 | segT seg_left, seg_right; | |
1324 | operatorT op; | |
2d034539 | 1325 | int move_seg_ok; |
252b5132 | 1326 | |
158184ac | 1327 | symp->sy_flags.sy_resolving = 1; |
252b5132 RH |
1328 | |
1329 | /* Help out with CSE. */ | |
1330 | add_symbol = symp->sy_value.X_add_symbol; | |
1331 | op_symbol = symp->sy_value.X_op_symbol; | |
1332 | final_val = symp->sy_value.X_add_number; | |
1333 | op = symp->sy_value.X_op; | |
1334 | ||
1335 | switch (op) | |
1336 | { | |
1337 | default: | |
1338 | BAD_CASE (op); | |
1339 | break; | |
1340 | ||
1341 | case O_absent: | |
1342 | final_val = 0; | |
1343 | /* Fall through. */ | |
1344 | ||
1345 | case O_constant: | |
61826503 CE |
1346 | /* Symbols whose section has SEC_ELF_OCTETS set, |
1347 | resolve to octets instead of target bytes. */ | |
1348 | if (symp->bsym->section->flags & SEC_OCTETS) | |
1349 | final_val += symp->sy_frag->fr_address; | |
1350 | else | |
1351 | final_val += symp->sy_frag->fr_address / OCTETS_PER_BYTE; | |
252b5132 RH |
1352 | if (final_seg == expr_section) |
1353 | final_seg = absolute_section; | |
db557034 AM |
1354 | /* Fall through. */ |
1355 | ||
1356 | case O_register: | |
252b5132 RH |
1357 | resolved = 1; |
1358 | break; | |
1359 | ||
1360 | case O_symbol: | |
1361 | case O_symbol_rva: | |
6386f3a7 | 1362 | left = resolve_symbol_value (add_symbol); |
e0890092 AM |
1363 | seg_left = S_GET_SEGMENT (add_symbol); |
1364 | if (finalize_syms) | |
1365 | symp->sy_value.X_op_symbol = NULL; | |
252b5132 | 1366 | |
e0890092 | 1367 | do_symbol: |
06e77878 AO |
1368 | if (S_IS_WEAKREFR (symp)) |
1369 | { | |
9c2799c2 | 1370 | gas_assert (final_val == 0); |
06e77878 AO |
1371 | if (S_IS_WEAKREFR (add_symbol)) |
1372 | { | |
9c2799c2 | 1373 | gas_assert (add_symbol->sy_value.X_op == O_symbol |
06e77878 AO |
1374 | && add_symbol->sy_value.X_add_number == 0); |
1375 | add_symbol = add_symbol->sy_value.X_add_symbol; | |
9c2799c2 | 1376 | gas_assert (! S_IS_WEAKREFR (add_symbol)); |
06e77878 AO |
1377 | symp->sy_value.X_add_symbol = add_symbol; |
1378 | } | |
1379 | } | |
1380 | ||
158184ac | 1381 | if (symp->sy_flags.sy_mri_common) |
252b5132 RH |
1382 | { |
1383 | /* This is a symbol inside an MRI common section. The | |
e0890092 AM |
1384 | relocation routines are going to handle it specially. |
1385 | Don't change the value. */ | |
49309057 | 1386 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1387 | break; |
1388 | } | |
1389 | ||
2a50b401 AM |
1390 | /* Don't leave symbol loops. */ |
1391 | if (finalize_syms | |
1392 | && add_symbol->sy_flags.sy_resolving) | |
1393 | break; | |
1394 | ||
6386f3a7 | 1395 | if (finalize_syms && final_val == 0) |
49309057 ILT |
1396 | { |
1397 | if (LOCAL_SYMBOL_CHECK (add_symbol)) | |
1398 | add_symbol = local_symbol_convert ((struct local_symbol *) | |
1399 | add_symbol); | |
1400 | copy_symbol_attributes (symp, add_symbol); | |
1401 | } | |
252b5132 | 1402 | |
e0890092 AM |
1403 | /* If we have equated this symbol to an undefined or common |
1404 | symbol, keep X_op set to O_symbol, and don't change | |
1405 | X_add_number. This permits the routine which writes out | |
1406 | relocation to detect this case, and convert the | |
1407 | relocation to be against the symbol to which this symbol | |
1408 | is equated. */ | |
1903f138 AM |
1409 | if (seg_left == undefined_section |
1410 | || bfd_is_com_section (seg_left) | |
7be1c489 | 1411 | #if defined (OBJ_COFF) && defined (TE_PE) |
977cdf5a NC |
1412 | || S_IS_WEAK (add_symbol) |
1413 | #endif | |
1903f138 AM |
1414 | || (finalize_syms |
1415 | && ((final_seg == expr_section | |
1416 | && seg_left != expr_section | |
1417 | && seg_left != absolute_section) | |
1418 | || symbol_shadow_p (symp)))) | |
252b5132 | 1419 | { |
6386f3a7 | 1420 | if (finalize_syms) |
252b5132 | 1421 | { |
252b5132 RH |
1422 | symp->sy_value.X_op = O_symbol; |
1423 | symp->sy_value.X_add_symbol = add_symbol; | |
1424 | symp->sy_value.X_add_number = final_val; | |
e0890092 AM |
1425 | /* Use X_op_symbol as a flag. */ |
1426 | symp->sy_value.X_op_symbol = add_symbol; | |
252b5132 | 1427 | } |
5a0ade8b | 1428 | final_seg = seg_left; |
e0890092 AM |
1429 | final_val += symp->sy_frag->fr_address + left; |
1430 | resolved = symbol_resolved_p (add_symbol); | |
158184ac | 1431 | symp->sy_flags.sy_resolving = 0; |
e0890092 AM |
1432 | goto exit_dont_set_value; |
1433 | } | |
252b5132 RH |
1434 | else |
1435 | { | |
1436 | final_val += symp->sy_frag->fr_address + left; | |
1437 | if (final_seg == expr_section || final_seg == undefined_section) | |
e0890092 | 1438 | final_seg = seg_left; |
252b5132 RH |
1439 | } |
1440 | ||
49309057 | 1441 | resolved = symbol_resolved_p (add_symbol); |
06e77878 | 1442 | if (S_IS_WEAKREFR (symp)) |
22987cec AM |
1443 | { |
1444 | symp->sy_flags.sy_resolving = 0; | |
1445 | goto exit_dont_set_value; | |
1446 | } | |
252b5132 RH |
1447 | break; |
1448 | ||
1449 | case O_uminus: | |
1450 | case O_bit_not: | |
1451 | case O_logical_not: | |
6386f3a7 | 1452 | left = resolve_symbol_value (add_symbol); |
784b640d | 1453 | seg_left = S_GET_SEGMENT (add_symbol); |
252b5132 | 1454 | |
0909233e AM |
1455 | /* By reducing these to the relevant dyadic operator, we get |
1456 | !S -> S == 0 permitted on anything, | |
1457 | -S -> 0 - S only permitted on absolute | |
1458 | ~S -> S ^ ~0 only permitted on absolute */ | |
1459 | if (op != O_logical_not && seg_left != absolute_section | |
1460 | && finalize_syms) | |
5a0ade8b | 1461 | report_op_error (symp, NULL, op, add_symbol); |
1d3b2b27 | 1462 | |
0909233e AM |
1463 | if (final_seg == expr_section || final_seg == undefined_section) |
1464 | final_seg = absolute_section; | |
1d3b2b27 | 1465 | |
252b5132 RH |
1466 | if (op == O_uminus) |
1467 | left = -left; | |
1468 | else if (op == O_logical_not) | |
1469 | left = !left; | |
1470 | else | |
1471 | left = ~left; | |
1472 | ||
1473 | final_val += left + symp->sy_frag->fr_address; | |
252b5132 | 1474 | |
49309057 | 1475 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1476 | break; |
1477 | ||
1478 | case O_multiply: | |
1479 | case O_divide: | |
1480 | case O_modulus: | |
1481 | case O_left_shift: | |
1482 | case O_right_shift: | |
1483 | case O_bit_inclusive_or: | |
1484 | case O_bit_or_not: | |
1485 | case O_bit_exclusive_or: | |
1486 | case O_bit_and: | |
1487 | case O_add: | |
1488 | case O_subtract: | |
1489 | case O_eq: | |
1490 | case O_ne: | |
1491 | case O_lt: | |
1492 | case O_le: | |
1493 | case O_ge: | |
1494 | case O_gt: | |
1495 | case O_logical_and: | |
1496 | case O_logical_or: | |
6386f3a7 AM |
1497 | left = resolve_symbol_value (add_symbol); |
1498 | right = resolve_symbol_value (op_symbol); | |
252b5132 RH |
1499 | seg_left = S_GET_SEGMENT (add_symbol); |
1500 | seg_right = S_GET_SEGMENT (op_symbol); | |
1501 | ||
1502 | /* Simplify addition or subtraction of a constant by folding the | |
1503 | constant into X_add_number. */ | |
e0890092 | 1504 | if (op == O_add) |
252b5132 RH |
1505 | { |
1506 | if (seg_right == absolute_section) | |
1507 | { | |
e0890092 | 1508 | final_val += right; |
252b5132 RH |
1509 | goto do_symbol; |
1510 | } | |
e0890092 | 1511 | else if (seg_left == absolute_section) |
252b5132 | 1512 | { |
252b5132 RH |
1513 | final_val += left; |
1514 | add_symbol = op_symbol; | |
1515 | left = right; | |
e0890092 AM |
1516 | seg_left = seg_right; |
1517 | goto do_symbol; | |
1518 | } | |
1519 | } | |
1520 | else if (op == O_subtract) | |
1521 | { | |
1522 | if (seg_right == absolute_section) | |
1523 | { | |
1524 | final_val -= right; | |
252b5132 RH |
1525 | goto do_symbol; |
1526 | } | |
1527 | } | |
1528 | ||
2d034539 | 1529 | move_seg_ok = 1; |
e0890092 AM |
1530 | /* Equality and non-equality tests are permitted on anything. |
1531 | Subtraction, and other comparison operators are permitted if | |
1532 | both operands are in the same section. Otherwise, both | |
1533 | operands must be absolute. We already handled the case of | |
1534 | addition or subtraction of a constant above. This will | |
1535 | probably need to be changed for an object file format which | |
fdef3943 | 1536 | supports arbitrary expressions. */ |
2d034539 | 1537 | if (!(seg_left == absolute_section |
5a0ade8b | 1538 | && seg_right == absolute_section) |
0909233e AM |
1539 | && !(op == O_eq || op == O_ne) |
1540 | && !((op == O_subtract | |
1541 | || op == O_lt || op == O_le || op == O_ge || op == O_gt) | |
1542 | && seg_left == seg_right | |
1543 | && (seg_left != undefined_section | |
1544 | || add_symbol == op_symbol))) | |
2d034539 NC |
1545 | { |
1546 | /* Don't emit messages unless we're finalizing the symbol value, | |
1547 | otherwise we may get the same message multiple times. */ | |
1548 | if (finalize_syms) | |
5a0ade8b | 1549 | report_op_error (symp, add_symbol, op, op_symbol); |
2d034539 NC |
1550 | /* However do not move the symbol into the absolute section |
1551 | if it cannot currently be resolved - this would confuse | |
1552 | other parts of the assembler into believing that the | |
1553 | expression had been evaluated to zero. */ | |
1554 | else | |
1555 | move_seg_ok = 0; | |
1556 | } | |
1d3b2b27 | 1557 | |
2d034539 NC |
1558 | if (move_seg_ok |
1559 | && (final_seg == expr_section || final_seg == undefined_section)) | |
0909233e | 1560 | final_seg = absolute_section; |
252b5132 RH |
1561 | |
1562 | /* Check for division by zero. */ | |
1563 | if ((op == O_divide || op == O_modulus) && right == 0) | |
1564 | { | |
1565 | /* If seg_right is not absolute_section, then we've | |
e0890092 | 1566 | already issued a warning about using a bad symbol. */ |
6386f3a7 | 1567 | if (seg_right == absolute_section && finalize_syms) |
252b5132 | 1568 | { |
3b4dbbbf | 1569 | const char *file; |
252b5132 RH |
1570 | unsigned int line; |
1571 | ||
1572 | if (expr_symbol_where (symp, &file, &line)) | |
1573 | as_bad_where (file, line, _("division by zero")); | |
1574 | else | |
0e389e77 | 1575 | as_bad (_("division by zero when setting `%s'"), |
252b5132 RH |
1576 | S_GET_NAME (symp)); |
1577 | } | |
1578 | ||
1579 | right = 1; | |
1580 | } | |
1581 | ||
1582 | switch (symp->sy_value.X_op) | |
1583 | { | |
1584 | case O_multiply: left *= right; break; | |
1585 | case O_divide: left /= right; break; | |
1586 | case O_modulus: left %= right; break; | |
1587 | case O_left_shift: left <<= right; break; | |
1588 | case O_right_shift: left >>= right; break; | |
1589 | case O_bit_inclusive_or: left |= right; break; | |
1590 | case O_bit_or_not: left |= ~right; break; | |
1591 | case O_bit_exclusive_or: left ^= right; break; | |
1592 | case O_bit_and: left &= right; break; | |
1593 | case O_add: left += right; break; | |
1594 | case O_subtract: left -= right; break; | |
e0890092 AM |
1595 | case O_eq: |
1596 | case O_ne: | |
1597 | left = (left == right && seg_left == seg_right | |
1598 | && (seg_left != undefined_section | |
1599 | || add_symbol == op_symbol) | |
1600 | ? ~ (offsetT) 0 : 0); | |
1601 | if (symp->sy_value.X_op == O_ne) | |
1602 | left = ~left; | |
1603 | break; | |
252b5132 RH |
1604 | case O_lt: left = left < right ? ~ (offsetT) 0 : 0; break; |
1605 | case O_le: left = left <= right ? ~ (offsetT) 0 : 0; break; | |
1606 | case O_ge: left = left >= right ? ~ (offsetT) 0 : 0; break; | |
1607 | case O_gt: left = left > right ? ~ (offsetT) 0 : 0; break; | |
1608 | case O_logical_and: left = left && right; break; | |
1609 | case O_logical_or: left = left || right; break; | |
6d6ad65b NC |
1610 | |
1611 | case O_illegal: | |
1612 | case O_absent: | |
1613 | case O_constant: | |
1614 | /* See PR 20895 for a reproducer. */ | |
1615 | as_bad (_("Invalid operation on symbol")); | |
1616 | goto exit_dont_set_value; | |
1617 | ||
1618 | default: | |
1619 | abort (); | |
252b5132 RH |
1620 | } |
1621 | ||
1622 | final_val += symp->sy_frag->fr_address + left; | |
1623 | if (final_seg == expr_section || final_seg == undefined_section) | |
784b640d AM |
1624 | { |
1625 | if (seg_left == undefined_section | |
1626 | || seg_right == undefined_section) | |
1627 | final_seg = undefined_section; | |
1628 | else if (seg_left == absolute_section) | |
1629 | final_seg = seg_right; | |
1630 | else | |
1631 | final_seg = seg_left; | |
1632 | } | |
49309057 ILT |
1633 | resolved = (symbol_resolved_p (add_symbol) |
1634 | && symbol_resolved_p (op_symbol)); | |
7c743825 | 1635 | break; |
252b5132 | 1636 | |
252b5132 RH |
1637 | case O_big: |
1638 | case O_illegal: | |
1639 | /* Give an error (below) if not in expr_section. We don't | |
1640 | want to worry about expr_section symbols, because they | |
1641 | are fictional (they are created as part of expression | |
1642 | resolution), and any problems may not actually mean | |
1643 | anything. */ | |
1644 | break; | |
1645 | } | |
1646 | ||
158184ac | 1647 | symp->sy_flags.sy_resolving = 0; |
252b5132 RH |
1648 | } |
1649 | ||
6386f3a7 | 1650 | if (finalize_syms) |
05bdb37e | 1651 | S_SET_VALUE (symp, final_val); |
252b5132 | 1652 | |
dc1e8a47 | 1653 | exit_dont_set_value: |
05bdb37e AM |
1654 | /* Always set the segment, even if not finalizing the value. |
1655 | The segment is used to determine whether a symbol is defined. */ | |
05bdb37e | 1656 | S_SET_SEGMENT (symp, final_seg); |
252b5132 | 1657 | |
252b5132 | 1658 | /* Don't worry if we can't resolve an expr_section symbol. */ |
6386f3a7 | 1659 | if (finalize_syms) |
252b5132 RH |
1660 | { |
1661 | if (resolved) | |
158184ac | 1662 | symp->sy_flags.sy_resolved = 1; |
252b5132 RH |
1663 | else if (S_GET_SEGMENT (symp) != expr_section) |
1664 | { | |
0e389e77 | 1665 | as_bad (_("can't resolve value for symbol `%s'"), |
7c743825 | 1666 | S_GET_NAME (symp)); |
158184ac | 1667 | symp->sy_flags.sy_resolved = 1; |
252b5132 RH |
1668 | } |
1669 | } | |
1670 | ||
1671 | return final_val; | |
1672 | } | |
1673 | ||
5a49b8ac | 1674 | static void resolve_local_symbol (const char *, void *); |
49309057 ILT |
1675 | |
1676 | /* A static function passed to hash_traverse. */ | |
1677 | ||
1678 | static void | |
5a49b8ac | 1679 | resolve_local_symbol (const char *key ATTRIBUTE_UNUSED, void *value) |
49309057 ILT |
1680 | { |
1681 | if (value != NULL) | |
1e9cc1c2 | 1682 | resolve_symbol_value ((symbolS *) value); |
49309057 ILT |
1683 | } |
1684 | ||
49309057 ILT |
1685 | /* Resolve all local symbols. */ |
1686 | ||
1687 | void | |
74937d39 | 1688 | resolve_local_symbol_values (void) |
49309057 | 1689 | { |
49309057 | 1690 | hash_traverse (local_hash, resolve_local_symbol); |
49309057 ILT |
1691 | } |
1692 | ||
9497f5ac NC |
1693 | /* Obtain the current value of a symbol without changing any |
1694 | sub-expressions used. */ | |
1695 | ||
1696 | int | |
2e1e12b1 | 1697 | snapshot_symbol (symbolS **symbolPP, valueT *valueP, segT *segP, fragS **fragPP) |
9497f5ac | 1698 | { |
2e1e12b1 JB |
1699 | symbolS *symbolP = *symbolPP; |
1700 | ||
9497f5ac NC |
1701 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
1702 | { | |
1703 | struct local_symbol *locsym = (struct local_symbol *) symbolP; | |
1704 | ||
1705 | *valueP = locsym->lsy_value; | |
1706 | *segP = locsym->lsy_section; | |
1707 | *fragPP = local_symbol_get_frag (locsym); | |
1708 | } | |
1709 | else | |
1710 | { | |
91d6fa6a | 1711 | expressionS exp = symbolP->sy_value; |
9497f5ac | 1712 | |
158184ac | 1713 | if (!symbolP->sy_flags.sy_resolved && exp.X_op != O_illegal) |
9497f5ac NC |
1714 | { |
1715 | int resolved; | |
1716 | ||
158184ac | 1717 | if (symbolP->sy_flags.sy_resolving) |
9497f5ac | 1718 | return 0; |
158184ac | 1719 | symbolP->sy_flags.sy_resolving = 1; |
91d6fa6a | 1720 | resolved = resolve_expression (&exp); |
158184ac | 1721 | symbolP->sy_flags.sy_resolving = 0; |
9497f5ac NC |
1722 | if (!resolved) |
1723 | return 0; | |
1724 | ||
91d6fa6a | 1725 | switch (exp.X_op) |
9497f5ac NC |
1726 | { |
1727 | case O_constant: | |
1728 | case O_register: | |
2e1e12b1 | 1729 | if (!symbol_equated_p (symbolP)) |
9497f5ac | 1730 | break; |
2b0f3761 | 1731 | /* Fallthru. */ |
9497f5ac NC |
1732 | case O_symbol: |
1733 | case O_symbol_rva: | |
91d6fa6a | 1734 | symbolP = exp.X_add_symbol; |
9497f5ac NC |
1735 | break; |
1736 | default: | |
1737 | return 0; | |
1738 | } | |
1739 | } | |
1740 | ||
d96eea71 | 1741 | *symbolPP = symbolP; |
e78bb25c NC |
1742 | |
1743 | /* A bogus input file can result in resolve_expression() | |
1744 | generating a local symbol, so we have to check again. */ | |
1745 | if (LOCAL_SYMBOL_CHECK (symbolP)) | |
1746 | { | |
1747 | struct local_symbol *locsym = (struct local_symbol *) symbolP; | |
1748 | ||
1749 | *valueP = locsym->lsy_value; | |
1750 | *segP = locsym->lsy_section; | |
1751 | *fragPP = local_symbol_get_frag (locsym); | |
1752 | } | |
1753 | else | |
1754 | { | |
1755 | *valueP = exp.X_add_number; | |
1756 | *segP = symbolP->bsym->section; | |
1757 | *fragPP = symbolP->sy_frag; | |
1758 | } | |
9497f5ac NC |
1759 | |
1760 | if (*segP == expr_section) | |
91d6fa6a | 1761 | switch (exp.X_op) |
9497f5ac NC |
1762 | { |
1763 | case O_constant: *segP = absolute_section; break; | |
1764 | case O_register: *segP = reg_section; break; | |
1765 | default: break; | |
1766 | } | |
1767 | } | |
1768 | ||
1769 | return 1; | |
1770 | } | |
1771 | ||
252b5132 RH |
1772 | /* Dollar labels look like a number followed by a dollar sign. Eg, "42$". |
1773 | They are *really* local. That is, they go out of scope whenever we see a | |
1774 | label that isn't local. Also, like fb labels, there can be multiple | |
1775 | instances of a dollar label. Therefor, we name encode each instance with | |
1776 | the instance number, keep a list of defined symbols separate from the real | |
1777 | symbol table, and we treat these buggers as a sparse array. */ | |
1778 | ||
1779 | static long *dollar_labels; | |
1780 | static long *dollar_label_instances; | |
1781 | static char *dollar_label_defines; | |
1782 | static unsigned long dollar_label_count; | |
1783 | static unsigned long dollar_label_max; | |
1784 | ||
7c743825 | 1785 | int |
74937d39 | 1786 | dollar_label_defined (long label) |
252b5132 RH |
1787 | { |
1788 | long *i; | |
1789 | ||
1790 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1791 | ||
1792 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1793 | if (*i == label) | |
1794 | return dollar_label_defines[i - dollar_labels]; | |
1795 | ||
7c743825 | 1796 | /* If we get here, label isn't defined. */ |
252b5132 | 1797 | return 0; |
7c743825 | 1798 | } |
252b5132 RH |
1799 | |
1800 | static long | |
74937d39 | 1801 | dollar_label_instance (long label) |
252b5132 RH |
1802 | { |
1803 | long *i; | |
1804 | ||
1805 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1806 | ||
1807 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1808 | if (*i == label) | |
1809 | return (dollar_label_instances[i - dollar_labels]); | |
1810 | ||
7c743825 KH |
1811 | /* If we get here, we haven't seen the label before. |
1812 | Therefore its instance count is zero. */ | |
252b5132 RH |
1813 | return 0; |
1814 | } | |
1815 | ||
7c743825 | 1816 | void |
74937d39 | 1817 | dollar_label_clear (void) |
252b5132 RH |
1818 | { |
1819 | memset (dollar_label_defines, '\0', (unsigned int) dollar_label_count); | |
1820 | } | |
1821 | ||
1822 | #define DOLLAR_LABEL_BUMP_BY 10 | |
1823 | ||
7c743825 | 1824 | void |
74937d39 | 1825 | define_dollar_label (long label) |
252b5132 RH |
1826 | { |
1827 | long *i; | |
1828 | ||
1829 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1830 | if (*i == label) | |
1831 | { | |
1832 | ++dollar_label_instances[i - dollar_labels]; | |
1833 | dollar_label_defines[i - dollar_labels] = 1; | |
1834 | return; | |
1835 | } | |
1836 | ||
7c743825 | 1837 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1838 | |
1839 | if (dollar_labels == NULL) | |
1840 | { | |
325801bd TS |
1841 | dollar_labels = XNEWVEC (long, DOLLAR_LABEL_BUMP_BY); |
1842 | dollar_label_instances = XNEWVEC (long, DOLLAR_LABEL_BUMP_BY); | |
add39d23 | 1843 | dollar_label_defines = XNEWVEC (char, DOLLAR_LABEL_BUMP_BY); |
252b5132 RH |
1844 | dollar_label_max = DOLLAR_LABEL_BUMP_BY; |
1845 | dollar_label_count = 0; | |
1846 | } | |
1847 | else if (dollar_label_count == dollar_label_max) | |
1848 | { | |
1849 | dollar_label_max += DOLLAR_LABEL_BUMP_BY; | |
325801bd TS |
1850 | dollar_labels = XRESIZEVEC (long, dollar_labels, dollar_label_max); |
1851 | dollar_label_instances = XRESIZEVEC (long, dollar_label_instances, | |
1852 | dollar_label_max); | |
add39d23 TS |
1853 | dollar_label_defines = XRESIZEVEC (char, dollar_label_defines, |
1854 | dollar_label_max); | |
7c743825 | 1855 | } /* if we needed to grow */ |
252b5132 RH |
1856 | |
1857 | dollar_labels[dollar_label_count] = label; | |
1858 | dollar_label_instances[dollar_label_count] = 1; | |
1859 | dollar_label_defines[dollar_label_count] = 1; | |
1860 | ++dollar_label_count; | |
1861 | } | |
1862 | ||
7c743825 KH |
1863 | /* Caller must copy returned name: we re-use the area for the next name. |
1864 | ||
2b0f3761 | 1865 | The mth occurrence of label n: is turned into the symbol "Ln^Am" |
7c743825 KH |
1866 | where n is the label number and m is the instance number. "L" makes |
1867 | it a label discarded unless debugging and "^A"('\1') ensures no | |
1868 | ordinary symbol SHOULD get the same name as a local label | |
1869 | symbol. The first "4:" is "L4^A1" - the m numbers begin at 1. | |
1870 | ||
1871 | fb labels get the same treatment, except that ^B is used in place | |
1872 | of ^A. */ | |
1873 | ||
1874 | char * /* Return local label name. */ | |
ed9e98c2 AM |
1875 | dollar_label_name (long n, /* we just saw "n$:" : n a number. */ |
1876 | int augend /* 0 for current instance, 1 for new instance. */) | |
252b5132 RH |
1877 | { |
1878 | long i; | |
7c743825 | 1879 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 | 1880 | static char symbol_name_build[24]; |
ed9e98c2 AM |
1881 | char *p; |
1882 | char *q; | |
7c743825 | 1883 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1884 | |
1885 | know (n >= 0); | |
1886 | know (augend == 0 || augend == 1); | |
1887 | p = symbol_name_build; | |
f84dd1f0 NC |
1888 | #ifdef LOCAL_LABEL_PREFIX |
1889 | *p++ = LOCAL_LABEL_PREFIX; | |
1890 | #endif | |
252b5132 RH |
1891 | *p++ = 'L'; |
1892 | ||
7c743825 KH |
1893 | /* Next code just does sprintf( {}, "%d", n); */ |
1894 | /* Label number. */ | |
252b5132 RH |
1895 | q = symbol_name_temporary; |
1896 | for (*q++ = 0, i = n; i; ++q) | |
1897 | { | |
1898 | *q = i % 10 + '0'; | |
1899 | i /= 10; | |
1900 | } | |
1901 | while ((*p = *--q) != '\0') | |
1902 | ++p; | |
1903 | ||
aa257fcd | 1904 | *p++ = DOLLAR_LABEL_CHAR; /* ^A */ |
252b5132 | 1905 | |
7c743825 | 1906 | /* Instance number. */ |
252b5132 RH |
1907 | q = symbol_name_temporary; |
1908 | for (*q++ = 0, i = dollar_label_instance (n) + augend; i; ++q) | |
1909 | { | |
1910 | *q = i % 10 + '0'; | |
1911 | i /= 10; | |
1912 | } | |
5bb3703f | 1913 | while ((*p++ = *--q) != '\0'); |
252b5132 | 1914 | |
7c743825 | 1915 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 RH |
1916 | return symbol_name_build; |
1917 | } | |
1918 | ||
47eebc20 | 1919 | /* Somebody else's idea of local labels. They are made by "n:" where n |
7c743825 KH |
1920 | is any decimal digit. Refer to them with |
1921 | "nb" for previous (backward) n: | |
1922 | or "nf" for next (forward) n:. | |
1923 | ||
1924 | We do a little better and let n be any number, not just a single digit, but | |
1925 | since the other guy's assembler only does ten, we treat the first ten | |
1926 | specially. | |
1927 | ||
1928 | Like someone else's assembler, we have one set of local label counters for | |
1929 | entire assembly, not one set per (sub)segment like in most assemblers. This | |
1930 | implies that one can refer to a label in another segment, and indeed some | |
1931 | crufty compilers have done just that. | |
1932 | ||
1933 | Since there could be a LOT of these things, treat them as a sparse | |
1934 | array. */ | |
252b5132 RH |
1935 | |
1936 | #define FB_LABEL_SPECIAL (10) | |
1937 | ||
1938 | static long fb_low_counter[FB_LABEL_SPECIAL]; | |
1939 | static long *fb_labels; | |
1940 | static long *fb_label_instances; | |
1941 | static long fb_label_count; | |
1942 | static long fb_label_max; | |
1943 | ||
7c743825 | 1944 | /* This must be more than FB_LABEL_SPECIAL. */ |
252b5132 RH |
1945 | #define FB_LABEL_BUMP_BY (FB_LABEL_SPECIAL + 6) |
1946 | ||
7c743825 | 1947 | static void |
74937d39 | 1948 | fb_label_init (void) |
252b5132 RH |
1949 | { |
1950 | memset ((void *) fb_low_counter, '\0', sizeof (fb_low_counter)); | |
7c743825 | 1951 | } |
252b5132 | 1952 | |
7c743825 KH |
1953 | /* Add one to the instance number of this fb label. */ |
1954 | ||
1955 | void | |
74937d39 | 1956 | fb_label_instance_inc (long label) |
252b5132 RH |
1957 | { |
1958 | long *i; | |
1959 | ||
b4e6cb80 | 1960 | if ((unsigned long) label < FB_LABEL_SPECIAL) |
252b5132 RH |
1961 | { |
1962 | ++fb_low_counter[label]; | |
1963 | return; | |
1964 | } | |
1965 | ||
1966 | if (fb_labels != NULL) | |
1967 | { | |
1968 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1969 | i < fb_labels + fb_label_count; ++i) | |
1970 | { | |
1971 | if (*i == label) | |
1972 | { | |
1973 | ++fb_label_instances[i - fb_labels]; | |
1974 | return; | |
7c743825 KH |
1975 | } /* if we find it */ |
1976 | } /* for each existing label */ | |
252b5132 RH |
1977 | } |
1978 | ||
7c743825 | 1979 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1980 | |
1981 | if (fb_labels == NULL) | |
1982 | { | |
325801bd TS |
1983 | fb_labels = XNEWVEC (long, FB_LABEL_BUMP_BY); |
1984 | fb_label_instances = XNEWVEC (long, FB_LABEL_BUMP_BY); | |
252b5132 RH |
1985 | fb_label_max = FB_LABEL_BUMP_BY; |
1986 | fb_label_count = FB_LABEL_SPECIAL; | |
1987 | ||
1988 | } | |
1989 | else if (fb_label_count == fb_label_max) | |
1990 | { | |
1991 | fb_label_max += FB_LABEL_BUMP_BY; | |
325801bd TS |
1992 | fb_labels = XRESIZEVEC (long, fb_labels, fb_label_max); |
1993 | fb_label_instances = XRESIZEVEC (long, fb_label_instances, fb_label_max); | |
7c743825 | 1994 | } /* if we needed to grow */ |
252b5132 RH |
1995 | |
1996 | fb_labels[fb_label_count] = label; | |
1997 | fb_label_instances[fb_label_count] = 1; | |
1998 | ++fb_label_count; | |
1999 | } | |
2000 | ||
7c743825 | 2001 | static long |
74937d39 | 2002 | fb_label_instance (long label) |
252b5132 RH |
2003 | { |
2004 | long *i; | |
2005 | ||
b4e6cb80 | 2006 | if ((unsigned long) label < FB_LABEL_SPECIAL) |
252b5132 RH |
2007 | { |
2008 | return (fb_low_counter[label]); | |
2009 | } | |
2010 | ||
2011 | if (fb_labels != NULL) | |
2012 | { | |
2013 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
2014 | i < fb_labels + fb_label_count; ++i) | |
2015 | { | |
2016 | if (*i == label) | |
2017 | { | |
2018 | return (fb_label_instances[i - fb_labels]); | |
7c743825 KH |
2019 | } /* if we find it */ |
2020 | } /* for each existing label */ | |
252b5132 RH |
2021 | } |
2022 | ||
2023 | /* We didn't find the label, so this must be a reference to the | |
2024 | first instance. */ | |
2025 | return 0; | |
2026 | } | |
2027 | ||
7c743825 KH |
2028 | /* Caller must copy returned name: we re-use the area for the next name. |
2029 | ||
2b0f3761 | 2030 | The mth occurrence of label n: is turned into the symbol "Ln^Bm" |
7c743825 KH |
2031 | where n is the label number and m is the instance number. "L" makes |
2032 | it a label discarded unless debugging and "^B"('\2') ensures no | |
2033 | ordinary symbol SHOULD get the same name as a local label | |
2034 | symbol. The first "4:" is "L4^B1" - the m numbers begin at 1. | |
2035 | ||
2036 | dollar labels get the same treatment, except that ^A is used in | |
2037 | place of ^B. */ | |
2038 | ||
2039 | char * /* Return local label name. */ | |
74937d39 KH |
2040 | fb_label_name (long n, /* We just saw "n:", "nf" or "nb" : n a number. */ |
2041 | long augend /* 0 for nb, 1 for n:, nf. */) | |
252b5132 RH |
2042 | { |
2043 | long i; | |
7c743825 | 2044 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 | 2045 | static char symbol_name_build[24]; |
ed9e98c2 AM |
2046 | char *p; |
2047 | char *q; | |
7c743825 | 2048 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
2049 | |
2050 | know (n >= 0); | |
a76903bf | 2051 | #ifdef TC_MMIX |
71ba24a1 | 2052 | know ((unsigned long) augend <= 2 /* See mmix_fb_label. */); |
a76903bf | 2053 | #else |
71ba24a1 | 2054 | know ((unsigned long) augend <= 1); |
a76903bf | 2055 | #endif |
252b5132 | 2056 | p = symbol_name_build; |
aa257fcd NC |
2057 | #ifdef LOCAL_LABEL_PREFIX |
2058 | *p++ = LOCAL_LABEL_PREFIX; | |
2059 | #endif | |
252b5132 RH |
2060 | *p++ = 'L'; |
2061 | ||
7c743825 KH |
2062 | /* Next code just does sprintf( {}, "%d", n); */ |
2063 | /* Label number. */ | |
252b5132 RH |
2064 | q = symbol_name_temporary; |
2065 | for (*q++ = 0, i = n; i; ++q) | |
2066 | { | |
2067 | *q = i % 10 + '0'; | |
2068 | i /= 10; | |
2069 | } | |
2070 | while ((*p = *--q) != '\0') | |
2071 | ++p; | |
2072 | ||
aa257fcd | 2073 | *p++ = LOCAL_LABEL_CHAR; /* ^B */ |
252b5132 | 2074 | |
7c743825 | 2075 | /* Instance number. */ |
252b5132 RH |
2076 | q = symbol_name_temporary; |
2077 | for (*q++ = 0, i = fb_label_instance (n) + augend; i; ++q) | |
2078 | { | |
2079 | *q = i % 10 + '0'; | |
2080 | i /= 10; | |
2081 | } | |
5bb3703f | 2082 | while ((*p++ = *--q) != '\0'); |
252b5132 | 2083 | |
7c743825 | 2084 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 | 2085 | return (symbol_name_build); |
7c743825 | 2086 | } |
252b5132 | 2087 | |
7c743825 KH |
2088 | /* Decode name that may have been generated by foo_label_name() above. |
2089 | If the name wasn't generated by foo_label_name(), then return it | |
2090 | unaltered. This is used for error messages. */ | |
252b5132 RH |
2091 | |
2092 | char * | |
74937d39 | 2093 | decode_local_label_name (char *s) |
252b5132 RH |
2094 | { |
2095 | char *p; | |
2096 | char *symbol_decode; | |
2097 | int label_number; | |
2098 | int instance_number; | |
cd0bbe6e | 2099 | const char *type; |
d95767bf | 2100 | const char *message_format; |
91d6fa6a | 2101 | int lindex = 0; |
43ad3147 | 2102 | |
aa257fcd | 2103 | #ifdef LOCAL_LABEL_PREFIX |
91d6fa6a NC |
2104 | if (s[lindex] == LOCAL_LABEL_PREFIX) |
2105 | ++lindex; | |
aa257fcd | 2106 | #endif |
43ad3147 | 2107 | |
91d6fa6a | 2108 | if (s[lindex] != 'L') |
252b5132 RH |
2109 | return s; |
2110 | ||
91d6fa6a | 2111 | for (label_number = 0, p = s + lindex + 1; ISDIGIT (*p); ++p) |
252b5132 RH |
2112 | label_number = (10 * label_number) + *p - '0'; |
2113 | ||
aa257fcd | 2114 | if (*p == DOLLAR_LABEL_CHAR) |
252b5132 | 2115 | type = "dollar"; |
aa257fcd | 2116 | else if (*p == LOCAL_LABEL_CHAR) |
252b5132 RH |
2117 | type = "fb"; |
2118 | else | |
2119 | return s; | |
2120 | ||
3882b010 | 2121 | for (instance_number = 0, p++; ISDIGIT (*p); ++p) |
252b5132 RH |
2122 | instance_number = (10 * instance_number) + *p - '0'; |
2123 | ||
d95767bf | 2124 | message_format = _("\"%d\" (instance number %d of a %s label)"); |
1e9cc1c2 | 2125 | symbol_decode = (char *) obstack_alloc (¬es, strlen (message_format) + 30); |
252b5132 RH |
2126 | sprintf (symbol_decode, message_format, label_number, instance_number, type); |
2127 | ||
2128 | return symbol_decode; | |
2129 | } | |
2130 | ||
2131 | /* Get the value of a symbol. */ | |
2132 | ||
2133 | valueT | |
74937d39 | 2134 | S_GET_VALUE (symbolS *s) |
252b5132 | 2135 | { |
49309057 | 2136 | if (LOCAL_SYMBOL_CHECK (s)) |
ac62c346 | 2137 | return resolve_symbol_value (s); |
49309057 | 2138 | |
158184ac | 2139 | if (!s->sy_flags.sy_resolved) |
e46d99eb | 2140 | { |
6386f3a7 AM |
2141 | valueT val = resolve_symbol_value (s); |
2142 | if (!finalize_syms) | |
e46d99eb AM |
2143 | return val; |
2144 | } | |
06e77878 AO |
2145 | if (S_IS_WEAKREFR (s)) |
2146 | return S_GET_VALUE (s->sy_value.X_add_symbol); | |
2147 | ||
252b5132 RH |
2148 | if (s->sy_value.X_op != O_constant) |
2149 | { | |
158184ac | 2150 | if (! s->sy_flags.sy_resolved |
252b5132 RH |
2151 | || s->sy_value.X_op != O_symbol |
2152 | || (S_IS_DEFINED (s) && ! S_IS_COMMON (s))) | |
0e389e77 | 2153 | as_bad (_("attempt to get value of unresolved symbol `%s'"), |
252b5132 | 2154 | S_GET_NAME (s)); |
252b5132 RH |
2155 | } |
2156 | return (valueT) s->sy_value.X_add_number; | |
2157 | } | |
2158 | ||
2159 | /* Set the value of a symbol. */ | |
2160 | ||
2161 | void | |
74937d39 | 2162 | S_SET_VALUE (symbolS *s, valueT val) |
252b5132 | 2163 | { |
49309057 ILT |
2164 | if (LOCAL_SYMBOL_CHECK (s)) |
2165 | { | |
bd780143 | 2166 | ((struct local_symbol *) s)->lsy_value = val; |
49309057 ILT |
2167 | return; |
2168 | } | |
2169 | ||
252b5132 RH |
2170 | s->sy_value.X_op = O_constant; |
2171 | s->sy_value.X_add_number = (offsetT) val; | |
2172 | s->sy_value.X_unsigned = 0; | |
06e77878 | 2173 | S_CLEAR_WEAKREFR (s); |
252b5132 RH |
2174 | } |
2175 | ||
2176 | void | |
74937d39 | 2177 | copy_symbol_attributes (symbolS *dest, symbolS *src) |
252b5132 | 2178 | { |
49309057 | 2179 | if (LOCAL_SYMBOL_CHECK (dest)) |
7f2f689c | 2180 | dest = local_symbol_convert ((struct local_symbol *) dest); |
49309057 | 2181 | if (LOCAL_SYMBOL_CHECK (src)) |
7f2f689c | 2182 | src = local_symbol_convert ((struct local_symbol *) src); |
49309057 | 2183 | |
252b5132 RH |
2184 | /* In an expression, transfer the settings of these flags. |
2185 | The user can override later, of course. */ | |
ad04f5ce L |
2186 | #define COPIED_SYMFLAGS (BSF_FUNCTION | BSF_OBJECT \ |
2187 | | BSF_GNU_INDIRECT_FUNCTION) | |
252b5132 | 2188 | dest->bsym->flags |= src->bsym->flags & COPIED_SYMFLAGS; |
252b5132 RH |
2189 | |
2190 | #ifdef OBJ_COPY_SYMBOL_ATTRIBUTES | |
2191 | OBJ_COPY_SYMBOL_ATTRIBUTES (dest, src); | |
2192 | #endif | |
794ba86a DJ |
2193 | |
2194 | #ifdef TC_COPY_SYMBOL_ATTRIBUTES | |
2195 | TC_COPY_SYMBOL_ATTRIBUTES (dest, src); | |
2196 | #endif | |
252b5132 RH |
2197 | } |
2198 | ||
252b5132 | 2199 | int |
74937d39 | 2200 | S_IS_FUNCTION (symbolS *s) |
252b5132 | 2201 | { |
49309057 ILT |
2202 | flagword flags; |
2203 | ||
2204 | if (LOCAL_SYMBOL_CHECK (s)) | |
2205 | return 0; | |
2206 | ||
2207 | flags = s->bsym->flags; | |
252b5132 RH |
2208 | |
2209 | return (flags & BSF_FUNCTION) != 0; | |
2210 | } | |
2211 | ||
2212 | int | |
74937d39 | 2213 | S_IS_EXTERNAL (symbolS *s) |
252b5132 | 2214 | { |
49309057 ILT |
2215 | flagword flags; |
2216 | ||
2217 | if (LOCAL_SYMBOL_CHECK (s)) | |
2218 | return 0; | |
2219 | ||
2220 | flags = s->bsym->flags; | |
252b5132 | 2221 | |
7c743825 | 2222 | /* Sanity check. */ |
252b5132 RH |
2223 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
2224 | abort (); | |
2225 | ||
2226 | return (flags & BSF_GLOBAL) != 0; | |
2227 | } | |
2228 | ||
2229 | int | |
74937d39 | 2230 | S_IS_WEAK (symbolS *s) |
252b5132 | 2231 | { |
49309057 ILT |
2232 | if (LOCAL_SYMBOL_CHECK (s)) |
2233 | return 0; | |
06e77878 AO |
2234 | /* Conceptually, a weakrefr is weak if the referenced symbol is. We |
2235 | could probably handle a WEAKREFR as always weak though. E.g., if | |
2236 | the referenced symbol has lost its weak status, there's no reason | |
2237 | to keep handling the weakrefr as if it was weak. */ | |
2238 | if (S_IS_WEAKREFR (s)) | |
2239 | return S_IS_WEAK (s->sy_value.X_add_symbol); | |
252b5132 RH |
2240 | return (s->bsym->flags & BSF_WEAK) != 0; |
2241 | } | |
2242 | ||
06e77878 AO |
2243 | int |
2244 | S_IS_WEAKREFR (symbolS *s) | |
2245 | { | |
2246 | if (LOCAL_SYMBOL_CHECK (s)) | |
2247 | return 0; | |
158184ac | 2248 | return s->sy_flags.sy_weakrefr != 0; |
06e77878 AO |
2249 | } |
2250 | ||
2251 | int | |
2252 | S_IS_WEAKREFD (symbolS *s) | |
2253 | { | |
2254 | if (LOCAL_SYMBOL_CHECK (s)) | |
2255 | return 0; | |
158184ac | 2256 | return s->sy_flags.sy_weakrefd != 0; |
06e77878 AO |
2257 | } |
2258 | ||
252b5132 | 2259 | int |
74937d39 | 2260 | S_IS_COMMON (symbolS *s) |
252b5132 | 2261 | { |
49309057 ILT |
2262 | if (LOCAL_SYMBOL_CHECK (s)) |
2263 | return 0; | |
252b5132 RH |
2264 | return bfd_is_com_section (s->bsym->section); |
2265 | } | |
2266 | ||
2267 | int | |
74937d39 | 2268 | S_IS_DEFINED (symbolS *s) |
252b5132 | 2269 | { |
49309057 ILT |
2270 | if (LOCAL_SYMBOL_CHECK (s)) |
2271 | return ((struct local_symbol *) s)->lsy_section != undefined_section; | |
252b5132 RH |
2272 | return s->bsym->section != undefined_section; |
2273 | } | |
2274 | ||
a161fe53 AM |
2275 | |
2276 | #ifndef EXTERN_FORCE_RELOC | |
2277 | #define EXTERN_FORCE_RELOC IS_ELF | |
2278 | #endif | |
2279 | ||
2280 | /* Return true for symbols that should not be reduced to section | |
2281 | symbols or eliminated from expressions, because they may be | |
2282 | overridden by the linker. */ | |
2283 | int | |
74937d39 | 2284 | S_FORCE_RELOC (symbolS *s, int strict) |
a161fe53 | 2285 | { |
f2d830a5 | 2286 | segT sec; |
a161fe53 | 2287 | if (LOCAL_SYMBOL_CHECK (s)) |
f2d830a5 AM |
2288 | sec = ((struct local_symbol *) s)->lsy_section; |
2289 | else | |
2290 | { | |
2291 | if ((strict | |
ae6063d4 AM |
2292 | && ((s->bsym->flags & BSF_WEAK) != 0 |
2293 | || (EXTERN_FORCE_RELOC | |
2294 | && (s->bsym->flags & BSF_GLOBAL) != 0))) | |
f2d830a5 AM |
2295 | || (s->bsym->flags & BSF_GNU_INDIRECT_FUNCTION) != 0) |
2296 | return TRUE; | |
2297 | sec = s->bsym->section; | |
2298 | } | |
2299 | return bfd_is_und_section (sec) || bfd_is_com_section (sec); | |
a161fe53 AM |
2300 | } |
2301 | ||
252b5132 | 2302 | int |
74937d39 | 2303 | S_IS_DEBUG (symbolS *s) |
252b5132 | 2304 | { |
49309057 ILT |
2305 | if (LOCAL_SYMBOL_CHECK (s)) |
2306 | return 0; | |
252b5132 RH |
2307 | if (s->bsym->flags & BSF_DEBUGGING) |
2308 | return 1; | |
2309 | return 0; | |
2310 | } | |
2311 | ||
2312 | int | |
74937d39 | 2313 | S_IS_LOCAL (symbolS *s) |
252b5132 | 2314 | { |
49309057 | 2315 | flagword flags; |
252b5132 RH |
2316 | const char *name; |
2317 | ||
49309057 ILT |
2318 | if (LOCAL_SYMBOL_CHECK (s)) |
2319 | return 1; | |
2320 | ||
2321 | flags = s->bsym->flags; | |
2322 | ||
7c743825 | 2323 | /* Sanity check. */ |
252b5132 RH |
2324 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
2325 | abort (); | |
2326 | ||
e6f7f6d1 | 2327 | if (bfd_asymbol_section (s->bsym) == reg_section) |
252b5132 RH |
2328 | return 1; |
2329 | ||
2330 | if (flag_strip_local_absolute | |
bb82af9f NC |
2331 | /* Keep BSF_FILE symbols in order to allow debuggers to identify |
2332 | the source file even when the object file is stripped. */ | |
2333 | && (flags & (BSF_GLOBAL | BSF_FILE)) == 0 | |
e6f7f6d1 | 2334 | && bfd_asymbol_section (s->bsym) == absolute_section) |
252b5132 RH |
2335 | return 1; |
2336 | ||
2337 | name = S_GET_NAME (s); | |
2338 | return (name != NULL | |
2339 | && ! S_IS_DEBUG (s) | |
aa257fcd NC |
2340 | && (strchr (name, DOLLAR_LABEL_CHAR) |
2341 | || strchr (name, LOCAL_LABEL_CHAR) | |
2469b3c5 JW |
2342 | #if FAKE_LABEL_CHAR != DOLLAR_LABEL_CHAR |
2343 | || strchr (name, FAKE_LABEL_CHAR) | |
2344 | #endif | |
df58fc94 | 2345 | || TC_LABEL_IS_LOCAL (name) |
252b5132 RH |
2346 | || (! flag_keep_locals |
2347 | && (bfd_is_local_label (stdoutput, s->bsym) | |
2348 | || (flag_mri | |
2349 | && name[0] == '?' | |
2350 | && name[1] == '?'))))); | |
2351 | } | |
2352 | ||
252b5132 | 2353 | int |
74937d39 | 2354 | S_IS_STABD (symbolS *s) |
252b5132 RH |
2355 | { |
2356 | return S_GET_NAME (s) == 0; | |
2357 | } | |
2358 | ||
6885131b AM |
2359 | int |
2360 | S_CAN_BE_REDEFINED (const symbolS *s) | |
2361 | { | |
2362 | if (LOCAL_SYMBOL_CHECK (s)) | |
2363 | return (local_symbol_get_frag ((struct local_symbol *) s) | |
2364 | == &predefined_address_frag); | |
2365 | /* Permit register names to be redefined. */ | |
2366 | return s->bsym->section == reg_section; | |
2367 | } | |
2368 | ||
9497f5ac NC |
2369 | int |
2370 | S_IS_VOLATILE (const symbolS *s) | |
2371 | { | |
2372 | if (LOCAL_SYMBOL_CHECK (s)) | |
2373 | return 0; | |
158184ac | 2374 | return s->sy_flags.sy_volatile; |
9497f5ac NC |
2375 | } |
2376 | ||
2377 | int | |
2378 | S_IS_FORWARD_REF (const symbolS *s) | |
2379 | { | |
2380 | if (LOCAL_SYMBOL_CHECK (s)) | |
2381 | return 0; | |
158184ac | 2382 | return s->sy_flags.sy_forward_ref; |
9497f5ac NC |
2383 | } |
2384 | ||
9758f3fc | 2385 | const char * |
74937d39 | 2386 | S_GET_NAME (symbolS *s) |
252b5132 | 2387 | { |
49309057 ILT |
2388 | if (LOCAL_SYMBOL_CHECK (s)) |
2389 | return ((struct local_symbol *) s)->lsy_name; | |
252b5132 RH |
2390 | return s->bsym->name; |
2391 | } | |
2392 | ||
2393 | segT | |
74937d39 | 2394 | S_GET_SEGMENT (symbolS *s) |
252b5132 | 2395 | { |
49309057 ILT |
2396 | if (LOCAL_SYMBOL_CHECK (s)) |
2397 | return ((struct local_symbol *) s)->lsy_section; | |
252b5132 RH |
2398 | return s->bsym->section; |
2399 | } | |
2400 | ||
2401 | void | |
74937d39 | 2402 | S_SET_SEGMENT (symbolS *s, segT seg) |
252b5132 RH |
2403 | { |
2404 | /* Don't reassign section symbols. The direct reason is to prevent seg | |
2405 | faults assigning back to const global symbols such as *ABS*, but it | |
2406 | shouldn't happen anyway. */ | |
2407 | ||
49309057 ILT |
2408 | if (LOCAL_SYMBOL_CHECK (s)) |
2409 | { | |
2410 | if (seg == reg_section) | |
2411 | s = local_symbol_convert ((struct local_symbol *) s); | |
2412 | else | |
2413 | { | |
2414 | ((struct local_symbol *) s)->lsy_section = seg; | |
2415 | return; | |
2416 | } | |
2417 | } | |
2418 | ||
252b5132 RH |
2419 | if (s->bsym->flags & BSF_SECTION_SYM) |
2420 | { | |
2421 | if (s->bsym->section != seg) | |
7c743825 | 2422 | abort (); |
252b5132 RH |
2423 | } |
2424 | else | |
2425 | s->bsym->section = seg; | |
2426 | } | |
2427 | ||
2428 | void | |
74937d39 | 2429 | S_SET_EXTERNAL (symbolS *s) |
252b5132 | 2430 | { |
49309057 ILT |
2431 | if (LOCAL_SYMBOL_CHECK (s)) |
2432 | s = local_symbol_convert ((struct local_symbol *) s); | |
252b5132 RH |
2433 | if ((s->bsym->flags & BSF_WEAK) != 0) |
2434 | { | |
2435 | /* Let .weak override .global. */ | |
2436 | return; | |
2437 | } | |
4d7c34bf NC |
2438 | if (s->bsym->flags & BSF_SECTION_SYM) |
2439 | { | |
4d7c34bf | 2440 | /* Do not reassign section symbols. */ |
3b4dbbbf | 2441 | as_warn (_("section symbols are already global")); |
4d7c34bf NC |
2442 | return; |
2443 | } | |
97c4f2d9 | 2444 | #ifndef TC_GLOBAL_REGISTER_SYMBOL_OK |
d0548f34 L |
2445 | if (S_GET_SEGMENT (s) == reg_section) |
2446 | { | |
2447 | as_bad ("can't make register symbol `%s' global", | |
2448 | S_GET_NAME (s)); | |
2449 | return; | |
2450 | } | |
97c4f2d9 | 2451 | #endif |
252b5132 | 2452 | s->bsym->flags |= BSF_GLOBAL; |
7c743825 | 2453 | s->bsym->flags &= ~(BSF_LOCAL | BSF_WEAK); |
977cdf5a | 2454 | |
22ba0981 | 2455 | #ifdef TE_PE |
977cdf5a NC |
2456 | if (! an_external_name && S_GET_NAME(s)[0] != '.') |
2457 | an_external_name = S_GET_NAME (s); | |
2458 | #endif | |
252b5132 RH |
2459 | } |
2460 | ||
2461 | void | |
74937d39 | 2462 | S_CLEAR_EXTERNAL (symbolS *s) |
252b5132 | 2463 | { |
49309057 ILT |
2464 | if (LOCAL_SYMBOL_CHECK (s)) |
2465 | return; | |
252b5132 RH |
2466 | if ((s->bsym->flags & BSF_WEAK) != 0) |
2467 | { | |
2468 | /* Let .weak override. */ | |
2469 | return; | |
2470 | } | |
2471 | s->bsym->flags |= BSF_LOCAL; | |
7c743825 | 2472 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_WEAK); |
252b5132 RH |
2473 | } |
2474 | ||
2475 | void | |
74937d39 | 2476 | S_SET_WEAK (symbolS *s) |
252b5132 | 2477 | { |
49309057 ILT |
2478 | if (LOCAL_SYMBOL_CHECK (s)) |
2479 | s = local_symbol_convert ((struct local_symbol *) s); | |
06e77878 AO |
2480 | #ifdef obj_set_weak_hook |
2481 | obj_set_weak_hook (s); | |
2482 | #endif | |
252b5132 | 2483 | s->bsym->flags |= BSF_WEAK; |
7c743825 | 2484 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_LOCAL); |
252b5132 RH |
2485 | } |
2486 | ||
06e77878 AO |
2487 | void |
2488 | S_SET_WEAKREFR (symbolS *s) | |
2489 | { | |
2490 | if (LOCAL_SYMBOL_CHECK (s)) | |
2491 | s = local_symbol_convert ((struct local_symbol *) s); | |
158184ac | 2492 | s->sy_flags.sy_weakrefr = 1; |
06e77878 AO |
2493 | /* If the alias was already used, make sure we mark the target as |
2494 | used as well, otherwise it might be dropped from the symbol | |
2495 | table. This may have unintended side effects if the alias is | |
2496 | later redirected to another symbol, such as keeping the unused | |
2497 | previous target in the symbol table. Since it will be weak, it's | |
2498 | not a big deal. */ | |
158184ac | 2499 | if (s->sy_flags.sy_used) |
06e77878 AO |
2500 | symbol_mark_used (s->sy_value.X_add_symbol); |
2501 | } | |
2502 | ||
2503 | void | |
2504 | S_CLEAR_WEAKREFR (symbolS *s) | |
2505 | { | |
2506 | if (LOCAL_SYMBOL_CHECK (s)) | |
2507 | return; | |
158184ac | 2508 | s->sy_flags.sy_weakrefr = 0; |
06e77878 AO |
2509 | } |
2510 | ||
2511 | void | |
2512 | S_SET_WEAKREFD (symbolS *s) | |
2513 | { | |
2514 | if (LOCAL_SYMBOL_CHECK (s)) | |
2515 | s = local_symbol_convert ((struct local_symbol *) s); | |
158184ac | 2516 | s->sy_flags.sy_weakrefd = 1; |
06e77878 AO |
2517 | S_SET_WEAK (s); |
2518 | } | |
2519 | ||
2520 | void | |
2521 | S_CLEAR_WEAKREFD (symbolS *s) | |
2522 | { | |
2523 | if (LOCAL_SYMBOL_CHECK (s)) | |
2524 | return; | |
158184ac | 2525 | if (s->sy_flags.sy_weakrefd) |
06e77878 | 2526 | { |
158184ac | 2527 | s->sy_flags.sy_weakrefd = 0; |
06e77878 AO |
2528 | /* If a weakref target symbol is weak, then it was never |
2529 | referenced directly before, not even in a .global directive, | |
2530 | so decay it to local. If it remains undefined, it will be | |
2531 | later turned into a global, like any other undefined | |
2532 | symbol. */ | |
2533 | if (s->bsym->flags & BSF_WEAK) | |
2534 | { | |
2535 | #ifdef obj_clear_weak_hook | |
2536 | obj_clear_weak_hook (s); | |
2537 | #endif | |
2538 | s->bsym->flags &= ~BSF_WEAK; | |
2539 | s->bsym->flags |= BSF_LOCAL; | |
2540 | } | |
2541 | } | |
2542 | } | |
2543 | ||
00f7efb6 | 2544 | void |
74937d39 | 2545 | S_SET_THREAD_LOCAL (symbolS *s) |
00f7efb6 JJ |
2546 | { |
2547 | if (LOCAL_SYMBOL_CHECK (s)) | |
2548 | s = local_symbol_convert ((struct local_symbol *) s); | |
2549 | if (bfd_is_com_section (s->bsym->section) | |
2550 | && (s->bsym->flags & BSF_THREAD_LOCAL) != 0) | |
2551 | return; | |
2552 | s->bsym->flags |= BSF_THREAD_LOCAL; | |
2553 | if ((s->bsym->flags & BSF_FUNCTION) != 0) | |
2554 | as_bad (_("Accessing function `%s' as thread-local object"), | |
2555 | S_GET_NAME (s)); | |
2556 | else if (! bfd_is_und_section (s->bsym->section) | |
2557 | && (s->bsym->section->flags & SEC_THREAD_LOCAL) == 0) | |
2558 | as_bad (_("Accessing `%s' as thread-local object"), | |
2559 | S_GET_NAME (s)); | |
2560 | } | |
2561 | ||
252b5132 | 2562 | void |
977cdf5a | 2563 | S_SET_NAME (symbolS *s, const char *name) |
252b5132 | 2564 | { |
49309057 ILT |
2565 | if (LOCAL_SYMBOL_CHECK (s)) |
2566 | { | |
2567 | ((struct local_symbol *) s)->lsy_name = name; | |
2568 | return; | |
2569 | } | |
252b5132 RH |
2570 | s->bsym->name = name; |
2571 | } | |
49309057 | 2572 | |
9497f5ac NC |
2573 | void |
2574 | S_SET_VOLATILE (symbolS *s) | |
2575 | { | |
2576 | if (LOCAL_SYMBOL_CHECK (s)) | |
2577 | s = local_symbol_convert ((struct local_symbol *) s); | |
158184ac | 2578 | s->sy_flags.sy_volatile = 1; |
9497f5ac NC |
2579 | } |
2580 | ||
92757bc9 JB |
2581 | void |
2582 | S_CLEAR_VOLATILE (symbolS *s) | |
2583 | { | |
2584 | if (!LOCAL_SYMBOL_CHECK (s)) | |
158184ac | 2585 | s->sy_flags.sy_volatile = 0; |
92757bc9 JB |
2586 | } |
2587 | ||
9497f5ac NC |
2588 | void |
2589 | S_SET_FORWARD_REF (symbolS *s) | |
2590 | { | |
2591 | if (LOCAL_SYMBOL_CHECK (s)) | |
2592 | s = local_symbol_convert ((struct local_symbol *) s); | |
158184ac | 2593 | s->sy_flags.sy_forward_ref = 1; |
9497f5ac NC |
2594 | } |
2595 | ||
49309057 ILT |
2596 | /* Return the previous symbol in a chain. */ |
2597 | ||
2598 | symbolS * | |
74937d39 | 2599 | symbol_previous (symbolS *s) |
49309057 ILT |
2600 | { |
2601 | if (LOCAL_SYMBOL_CHECK (s)) | |
2602 | abort (); | |
2603 | return s->sy_previous; | |
2604 | } | |
2605 | ||
49309057 ILT |
2606 | /* Return the next symbol in a chain. */ |
2607 | ||
2608 | symbolS * | |
74937d39 | 2609 | symbol_next (symbolS *s) |
49309057 ILT |
2610 | { |
2611 | if (LOCAL_SYMBOL_CHECK (s)) | |
2612 | abort (); | |
2613 | return s->sy_next; | |
2614 | } | |
2615 | ||
2616 | /* Return a pointer to the value of a symbol as an expression. */ | |
2617 | ||
2618 | expressionS * | |
74937d39 | 2619 | symbol_get_value_expression (symbolS *s) |
49309057 ILT |
2620 | { |
2621 | if (LOCAL_SYMBOL_CHECK (s)) | |
2622 | s = local_symbol_convert ((struct local_symbol *) s); | |
2623 | return &s->sy_value; | |
2624 | } | |
2625 | ||
2626 | /* Set the value of a symbol to an expression. */ | |
2627 | ||
2628 | void | |
74937d39 | 2629 | symbol_set_value_expression (symbolS *s, const expressionS *exp) |
49309057 ILT |
2630 | { |
2631 | if (LOCAL_SYMBOL_CHECK (s)) | |
2632 | s = local_symbol_convert ((struct local_symbol *) s); | |
2633 | s->sy_value = *exp; | |
06e77878 | 2634 | S_CLEAR_WEAKREFR (s); |
49309057 ILT |
2635 | } |
2636 | ||
087d837e L |
2637 | /* Return whether 2 symbols are the same. */ |
2638 | ||
2639 | int | |
2640 | symbol_same_p (symbolS *s1, symbolS *s2) | |
2641 | { | |
38cf168b AM |
2642 | s1 = get_real_sym (s1); |
2643 | s2 = get_real_sym (s2); | |
087d837e L |
2644 | return s1 == s2; |
2645 | } | |
2646 | ||
be95a9c1 AM |
2647 | /* Return a pointer to the X_add_number component of a symbol. */ |
2648 | ||
514d955d | 2649 | offsetT * |
be95a9c1 AM |
2650 | symbol_X_add_number (symbolS *s) |
2651 | { | |
be95a9c1 | 2652 | if (LOCAL_SYMBOL_CHECK (s)) |
514d955d | 2653 | return (offsetT *) &((struct local_symbol *) s)->lsy_value; |
be95a9c1 | 2654 | |
514d955d | 2655 | return &s->sy_value.X_add_number; |
be95a9c1 AM |
2656 | } |
2657 | ||
b7d6ed97 RH |
2658 | /* Set the value of SYM to the current position in the current segment. */ |
2659 | ||
2660 | void | |
74937d39 | 2661 | symbol_set_value_now (symbolS *sym) |
b7d6ed97 RH |
2662 | { |
2663 | S_SET_SEGMENT (sym, now_seg); | |
2664 | S_SET_VALUE (sym, frag_now_fix ()); | |
2665 | symbol_set_frag (sym, frag_now); | |
2666 | } | |
2667 | ||
49309057 ILT |
2668 | /* Set the frag of a symbol. */ |
2669 | ||
2670 | void | |
74937d39 | 2671 | symbol_set_frag (symbolS *s, fragS *f) |
49309057 ILT |
2672 | { |
2673 | if (LOCAL_SYMBOL_CHECK (s)) | |
2674 | { | |
2675 | local_symbol_set_frag ((struct local_symbol *) s, f); | |
2676 | return; | |
2677 | } | |
2678 | s->sy_frag = f; | |
06e77878 | 2679 | S_CLEAR_WEAKREFR (s); |
49309057 ILT |
2680 | } |
2681 | ||
2682 | /* Return the frag of a symbol. */ | |
2683 | ||
2684 | fragS * | |
74937d39 | 2685 | symbol_get_frag (symbolS *s) |
49309057 ILT |
2686 | { |
2687 | if (LOCAL_SYMBOL_CHECK (s)) | |
2688 | return local_symbol_get_frag ((struct local_symbol *) s); | |
2689 | return s->sy_frag; | |
2690 | } | |
2691 | ||
2692 | /* Mark a symbol as having been used. */ | |
2693 | ||
2694 | void | |
74937d39 | 2695 | symbol_mark_used (symbolS *s) |
49309057 ILT |
2696 | { |
2697 | if (LOCAL_SYMBOL_CHECK (s)) | |
2698 | return; | |
158184ac | 2699 | s->sy_flags.sy_used = 1; |
06e77878 AO |
2700 | if (S_IS_WEAKREFR (s)) |
2701 | symbol_mark_used (s->sy_value.X_add_symbol); | |
49309057 ILT |
2702 | } |
2703 | ||
2704 | /* Clear the mark of whether a symbol has been used. */ | |
2705 | ||
2706 | void | |
74937d39 | 2707 | symbol_clear_used (symbolS *s) |
49309057 ILT |
2708 | { |
2709 | if (LOCAL_SYMBOL_CHECK (s)) | |
2710 | s = local_symbol_convert ((struct local_symbol *) s); | |
158184ac | 2711 | s->sy_flags.sy_used = 0; |
49309057 ILT |
2712 | } |
2713 | ||
2714 | /* Return whether a symbol has been used. */ | |
2715 | ||
2716 | int | |
74937d39 | 2717 | symbol_used_p (symbolS *s) |
49309057 ILT |
2718 | { |
2719 | if (LOCAL_SYMBOL_CHECK (s)) | |
2720 | return 1; | |
158184ac | 2721 | return s->sy_flags.sy_used; |
49309057 ILT |
2722 | } |
2723 | ||
2724 | /* Mark a symbol as having been used in a reloc. */ | |
2725 | ||
2726 | void | |
74937d39 | 2727 | symbol_mark_used_in_reloc (symbolS *s) |
49309057 ILT |
2728 | { |
2729 | if (LOCAL_SYMBOL_CHECK (s)) | |
2730 | s = local_symbol_convert ((struct local_symbol *) s); | |
158184ac | 2731 | s->sy_flags.sy_used_in_reloc = 1; |
49309057 ILT |
2732 | } |
2733 | ||
2734 | /* Clear the mark of whether a symbol has been used in a reloc. */ | |
2735 | ||
2736 | void | |
74937d39 | 2737 | symbol_clear_used_in_reloc (symbolS *s) |
49309057 ILT |
2738 | { |
2739 | if (LOCAL_SYMBOL_CHECK (s)) | |
2740 | return; | |
158184ac | 2741 | s->sy_flags.sy_used_in_reloc = 0; |
49309057 ILT |
2742 | } |
2743 | ||
2744 | /* Return whether a symbol has been used in a reloc. */ | |
2745 | ||
2746 | int | |
74937d39 | 2747 | symbol_used_in_reloc_p (symbolS *s) |
49309057 ILT |
2748 | { |
2749 | if (LOCAL_SYMBOL_CHECK (s)) | |
2750 | return 0; | |
158184ac | 2751 | return s->sy_flags.sy_used_in_reloc; |
49309057 ILT |
2752 | } |
2753 | ||
2754 | /* Mark a symbol as an MRI common symbol. */ | |
2755 | ||
2756 | void | |
74937d39 | 2757 | symbol_mark_mri_common (symbolS *s) |
49309057 ILT |
2758 | { |
2759 | if (LOCAL_SYMBOL_CHECK (s)) | |
2760 | s = local_symbol_convert ((struct local_symbol *) s); | |
158184ac | 2761 | s->sy_flags.sy_mri_common = 1; |
49309057 ILT |
2762 | } |
2763 | ||
2764 | /* Clear the mark of whether a symbol is an MRI common symbol. */ | |
2765 | ||
2766 | void | |
74937d39 | 2767 | symbol_clear_mri_common (symbolS *s) |
49309057 ILT |
2768 | { |
2769 | if (LOCAL_SYMBOL_CHECK (s)) | |
2770 | return; | |
158184ac | 2771 | s->sy_flags.sy_mri_common = 0; |
49309057 ILT |
2772 | } |
2773 | ||
2774 | /* Return whether a symbol is an MRI common symbol. */ | |
2775 | ||
2776 | int | |
74937d39 | 2777 | symbol_mri_common_p (symbolS *s) |
49309057 ILT |
2778 | { |
2779 | if (LOCAL_SYMBOL_CHECK (s)) | |
2780 | return 0; | |
158184ac | 2781 | return s->sy_flags.sy_mri_common; |
49309057 ILT |
2782 | } |
2783 | ||
2784 | /* Mark a symbol as having been written. */ | |
2785 | ||
2786 | void | |
74937d39 | 2787 | symbol_mark_written (symbolS *s) |
49309057 ILT |
2788 | { |
2789 | if (LOCAL_SYMBOL_CHECK (s)) | |
2790 | return; | |
158184ac | 2791 | s->sy_flags.sy_written = 1; |
49309057 ILT |
2792 | } |
2793 | ||
2794 | /* Clear the mark of whether a symbol has been written. */ | |
2795 | ||
2796 | void | |
74937d39 | 2797 | symbol_clear_written (symbolS *s) |
49309057 ILT |
2798 | { |
2799 | if (LOCAL_SYMBOL_CHECK (s)) | |
2800 | return; | |
158184ac | 2801 | s->sy_flags.sy_written = 0; |
49309057 ILT |
2802 | } |
2803 | ||
2804 | /* Return whether a symbol has been written. */ | |
2805 | ||
2806 | int | |
74937d39 | 2807 | symbol_written_p (symbolS *s) |
49309057 ILT |
2808 | { |
2809 | if (LOCAL_SYMBOL_CHECK (s)) | |
2810 | return 0; | |
158184ac | 2811 | return s->sy_flags.sy_written; |
49309057 ILT |
2812 | } |
2813 | ||
2814 | /* Mark a symbol has having been resolved. */ | |
2815 | ||
2816 | void | |
74937d39 | 2817 | symbol_mark_resolved (symbolS *s) |
49309057 ILT |
2818 | { |
2819 | if (LOCAL_SYMBOL_CHECK (s)) | |
2820 | { | |
2821 | local_symbol_mark_resolved ((struct local_symbol *) s); | |
2822 | return; | |
2823 | } | |
158184ac | 2824 | s->sy_flags.sy_resolved = 1; |
49309057 ILT |
2825 | } |
2826 | ||
2827 | /* Return whether a symbol has been resolved. */ | |
2828 | ||
2829 | int | |
74937d39 | 2830 | symbol_resolved_p (symbolS *s) |
49309057 ILT |
2831 | { |
2832 | if (LOCAL_SYMBOL_CHECK (s)) | |
2833 | return local_symbol_resolved_p ((struct local_symbol *) s); | |
158184ac | 2834 | return s->sy_flags.sy_resolved; |
49309057 ILT |
2835 | } |
2836 | ||
2837 | /* Return whether a symbol is a section symbol. */ | |
2838 | ||
2839 | int | |
74937d39 | 2840 | symbol_section_p (symbolS *s ATTRIBUTE_UNUSED) |
49309057 ILT |
2841 | { |
2842 | if (LOCAL_SYMBOL_CHECK (s)) | |
2843 | return 0; | |
49309057 | 2844 | return (s->bsym->flags & BSF_SECTION_SYM) != 0; |
49309057 ILT |
2845 | } |
2846 | ||
2847 | /* Return whether a symbol is equated to another symbol. */ | |
2848 | ||
2849 | int | |
74937d39 | 2850 | symbol_equated_p (symbolS *s) |
49309057 ILT |
2851 | { |
2852 | if (LOCAL_SYMBOL_CHECK (s)) | |
2853 | return 0; | |
2854 | return s->sy_value.X_op == O_symbol; | |
2855 | } | |
2856 | ||
e0890092 AM |
2857 | /* Return whether a symbol is equated to another symbol, and should be |
2858 | treated specially when writing out relocs. */ | |
2859 | ||
2860 | int | |
74937d39 | 2861 | symbol_equated_reloc_p (symbolS *s) |
e0890092 AM |
2862 | { |
2863 | if (LOCAL_SYMBOL_CHECK (s)) | |
2864 | return 0; | |
2865 | /* X_op_symbol, normally not used for O_symbol, is set by | |
2866 | resolve_symbol_value to flag expression syms that have been | |
2867 | equated. */ | |
2868 | return (s->sy_value.X_op == O_symbol | |
7be1c489 | 2869 | #if defined (OBJ_COFF) && defined (TE_PE) |
977cdf5a NC |
2870 | && ! S_IS_WEAK (s) |
2871 | #endif | |
158184ac | 2872 | && ((s->sy_flags.sy_resolved && s->sy_value.X_op_symbol != NULL) |
e0890092 AM |
2873 | || ! S_IS_DEFINED (s) |
2874 | || S_IS_COMMON (s))); | |
2875 | } | |
2876 | ||
49309057 ILT |
2877 | /* Return whether a symbol has a constant value. */ |
2878 | ||
2879 | int | |
74937d39 | 2880 | symbol_constant_p (symbolS *s) |
49309057 ILT |
2881 | { |
2882 | if (LOCAL_SYMBOL_CHECK (s)) | |
2883 | return 1; | |
2884 | return s->sy_value.X_op == O_constant; | |
2885 | } | |
2886 | ||
bdf128d6 JB |
2887 | /* Return whether a symbol was cloned and thus removed from the global |
2888 | symbol list. */ | |
2889 | ||
2890 | int | |
2891 | symbol_shadow_p (symbolS *s) | |
2892 | { | |
2893 | if (LOCAL_SYMBOL_CHECK (s)) | |
2894 | return 0; | |
2895 | return s->sy_next == s; | |
2896 | } | |
2897 | ||
8d1015a8 AM |
2898 | /* If S was created as a struct symbol, return S, otherwise if S is a |
2899 | converted local_symbol return the converted symbol, otherwise | |
2900 | return NULL. */ | |
2901 | ||
2902 | symbolS * | |
2903 | symbol_symbolS (symbolS *s) | |
2904 | { | |
2905 | if (LOCAL_SYMBOL_CHECK (s)) | |
2906 | return NULL; | |
2907 | return s; | |
2908 | } | |
2909 | ||
49309057 ILT |
2910 | /* Return the BFD symbol for a symbol. */ |
2911 | ||
2912 | asymbol * | |
74937d39 | 2913 | symbol_get_bfdsym (symbolS *s) |
49309057 ILT |
2914 | { |
2915 | if (LOCAL_SYMBOL_CHECK (s)) | |
2916 | s = local_symbol_convert ((struct local_symbol *) s); | |
2917 | return s->bsym; | |
2918 | } | |
2919 | ||
2920 | /* Set the BFD symbol for a symbol. */ | |
2921 | ||
2922 | void | |
74937d39 | 2923 | symbol_set_bfdsym (symbolS *s, asymbol *bsym) |
49309057 ILT |
2924 | { |
2925 | if (LOCAL_SYMBOL_CHECK (s)) | |
2926 | s = local_symbol_convert ((struct local_symbol *) s); | |
22fe14ad NC |
2927 | /* Usually, it is harmless to reset a symbol to a BFD section |
2928 | symbol. For example, obj_elf_change_section sets the BFD symbol | |
2929 | of an old symbol with the newly created section symbol. But when | |
2930 | we have multiple sections with the same name, the newly created | |
2931 | section may have the same name as an old section. We check if the | |
2932 | old symbol has been already marked as a section symbol before | |
2933 | resetting it. */ | |
2934 | if ((s->bsym->flags & BSF_SECTION_SYM) == 0) | |
2935 | s->bsym = bsym; | |
2936 | /* else XXX - What do we do now ? */ | |
49309057 ILT |
2937 | } |
2938 | ||
49309057 ILT |
2939 | #ifdef OBJ_SYMFIELD_TYPE |
2940 | ||
2941 | /* Get a pointer to the object format information for a symbol. */ | |
2942 | ||
2943 | OBJ_SYMFIELD_TYPE * | |
74937d39 | 2944 | symbol_get_obj (symbolS *s) |
49309057 ILT |
2945 | { |
2946 | if (LOCAL_SYMBOL_CHECK (s)) | |
2947 | s = local_symbol_convert ((struct local_symbol *) s); | |
2948 | return &s->sy_obj; | |
2949 | } | |
2950 | ||
2951 | /* Set the object format information for a symbol. */ | |
2952 | ||
2953 | void | |
74937d39 | 2954 | symbol_set_obj (symbolS *s, OBJ_SYMFIELD_TYPE *o) |
49309057 ILT |
2955 | { |
2956 | if (LOCAL_SYMBOL_CHECK (s)) | |
2957 | s = local_symbol_convert ((struct local_symbol *) s); | |
2958 | s->sy_obj = *o; | |
2959 | } | |
2960 | ||
2961 | #endif /* OBJ_SYMFIELD_TYPE */ | |
2962 | ||
2963 | #ifdef TC_SYMFIELD_TYPE | |
2964 | ||
2965 | /* Get a pointer to the processor information for a symbol. */ | |
2966 | ||
2967 | TC_SYMFIELD_TYPE * | |
74937d39 | 2968 | symbol_get_tc (symbolS *s) |
49309057 ILT |
2969 | { |
2970 | if (LOCAL_SYMBOL_CHECK (s)) | |
2971 | s = local_symbol_convert ((struct local_symbol *) s); | |
2972 | return &s->sy_tc; | |
2973 | } | |
2974 | ||
2975 | /* Set the processor information for a symbol. */ | |
2976 | ||
2977 | void | |
74937d39 | 2978 | symbol_set_tc (symbolS *s, TC_SYMFIELD_TYPE *o) |
49309057 ILT |
2979 | { |
2980 | if (LOCAL_SYMBOL_CHECK (s)) | |
2981 | s = local_symbol_convert ((struct local_symbol *) s); | |
2982 | s->sy_tc = *o; | |
2983 | } | |
2984 | ||
2985 | #endif /* TC_SYMFIELD_TYPE */ | |
2986 | ||
252b5132 | 2987 | void |
74937d39 | 2988 | symbol_begin (void) |
252b5132 RH |
2989 | { |
2990 | symbol_lastP = NULL; | |
7c743825 | 2991 | symbol_rootP = NULL; /* In case we have 0 symbols (!!) */ |
252b5132 | 2992 | sy_hash = hash_new (); |
49309057 | 2993 | local_hash = hash_new (); |
252b5132 RH |
2994 | |
2995 | memset ((char *) (&abs_symbol), '\0', sizeof (abs_symbol)); | |
252b5132 | 2996 | #if defined (EMIT_SECTION_SYMBOLS) || !defined (RELOC_REQUIRES_SYMBOL) |
45dfa85a | 2997 | abs_symbol.bsym = bfd_abs_section_ptr->symbol; |
252b5132 RH |
2998 | #endif |
2999 | abs_symbol.sy_value.X_op = O_constant; | |
3000 | abs_symbol.sy_frag = &zero_address_frag; | |
3001 | ||
3002 | if (LOCAL_LABELS_FB) | |
3003 | fb_label_init (); | |
3004 | } | |
4a826962 MR |
3005 | |
3006 | void | |
3007 | dot_symbol_init (void) | |
3008 | { | |
3009 | dot_symbol.bsym = bfd_make_empty_symbol (stdoutput); | |
3010 | if (dot_symbol.bsym == NULL) | |
3011 | as_fatal ("bfd_make_empty_symbol: %s", bfd_errmsg (bfd_get_error ())); | |
3012 | dot_symbol.bsym->name = "."; | |
158184ac | 3013 | dot_symbol.sy_flags.sy_forward_ref = 1; |
4a826962 MR |
3014 | dot_symbol.sy_value.X_op = O_constant; |
3015 | } | |
252b5132 RH |
3016 | \f |
3017 | int indent_level; | |
3018 | ||
3019 | /* Maximum indent level. | |
3020 | Available for modification inside a gdb session. */ | |
87c245cc | 3021 | static int max_indent_level = 8; |
252b5132 | 3022 | |
252b5132 | 3023 | void |
74937d39 | 3024 | print_symbol_value_1 (FILE *file, symbolS *sym) |
252b5132 RH |
3025 | { |
3026 | const char *name = S_GET_NAME (sym); | |
3027 | if (!name || !name[0]) | |
3028 | name = "(unnamed)"; | |
d2df793a NC |
3029 | fprintf (file, "sym "); |
3030 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) sym)); | |
3031 | fprintf (file, " %s", name); | |
49309057 ILT |
3032 | |
3033 | if (LOCAL_SYMBOL_CHECK (sym)) | |
3034 | { | |
3035 | struct local_symbol *locsym = (struct local_symbol *) sym; | |
d2df793a NC |
3036 | |
3037 | if (local_symbol_get_frag (locsym) != & zero_address_frag | |
49309057 | 3038 | && local_symbol_get_frag (locsym) != NULL) |
d2df793a NC |
3039 | { |
3040 | fprintf (file, " frag "); | |
3041 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) local_symbol_get_frag (locsym))); | |
3042 | } | |
49309057 ILT |
3043 | if (local_symbol_resolved_p (locsym)) |
3044 | fprintf (file, " resolved"); | |
3045 | fprintf (file, " local"); | |
3046 | } | |
3047 | else | |
3048 | { | |
3049 | if (sym->sy_frag != &zero_address_frag) | |
d2df793a NC |
3050 | { |
3051 | fprintf (file, " frag "); | |
3052 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) sym->sy_frag)); | |
3053 | } | |
158184ac | 3054 | if (sym->sy_flags.sy_written) |
49309057 | 3055 | fprintf (file, " written"); |
158184ac | 3056 | if (sym->sy_flags.sy_resolved) |
49309057 | 3057 | fprintf (file, " resolved"); |
158184ac | 3058 | else if (sym->sy_flags.sy_resolving) |
49309057 | 3059 | fprintf (file, " resolving"); |
158184ac | 3060 | if (sym->sy_flags.sy_used_in_reloc) |
49309057 | 3061 | fprintf (file, " used-in-reloc"); |
158184ac | 3062 | if (sym->sy_flags.sy_used) |
49309057 ILT |
3063 | fprintf (file, " used"); |
3064 | if (S_IS_LOCAL (sym)) | |
3065 | fprintf (file, " local"); | |
e97b3f28 | 3066 | if (S_IS_EXTERNAL (sym)) |
49309057 | 3067 | fprintf (file, " extern"); |
06e77878 AO |
3068 | if (S_IS_WEAK (sym)) |
3069 | fprintf (file, " weak"); | |
49309057 ILT |
3070 | if (S_IS_DEBUG (sym)) |
3071 | fprintf (file, " debug"); | |
3072 | if (S_IS_DEFINED (sym)) | |
3073 | fprintf (file, " defined"); | |
3074 | } | |
06e77878 AO |
3075 | if (S_IS_WEAKREFR (sym)) |
3076 | fprintf (file, " weakrefr"); | |
3077 | if (S_IS_WEAKREFD (sym)) | |
3078 | fprintf (file, " weakrefd"); | |
252b5132 | 3079 | fprintf (file, " %s", segment_name (S_GET_SEGMENT (sym))); |
49309057 | 3080 | if (symbol_resolved_p (sym)) |
252b5132 RH |
3081 | { |
3082 | segT s = S_GET_SEGMENT (sym); | |
3083 | ||
3084 | if (s != undefined_section | |
411863a4 | 3085 | && s != expr_section) |
0af1713e | 3086 | fprintf (file, " %lx", (unsigned long) S_GET_VALUE (sym)); |
252b5132 RH |
3087 | } |
3088 | else if (indent_level < max_indent_level | |
3089 | && S_GET_SEGMENT (sym) != undefined_section) | |
3090 | { | |
3091 | indent_level++; | |
3092 | fprintf (file, "\n%*s<", indent_level * 4, ""); | |
49309057 ILT |
3093 | if (LOCAL_SYMBOL_CHECK (sym)) |
3094 | fprintf (file, "constant %lx", | |
0af1713e | 3095 | (unsigned long) ((struct local_symbol *) sym)->lsy_value); |
49309057 ILT |
3096 | else |
3097 | print_expr_1 (file, &sym->sy_value); | |
252b5132 RH |
3098 | fprintf (file, ">"); |
3099 | indent_level--; | |
3100 | } | |
3101 | fflush (file); | |
3102 | } | |
3103 | ||
3104 | void | |
74937d39 | 3105 | print_symbol_value (symbolS *sym) |
252b5132 RH |
3106 | { |
3107 | indent_level = 0; | |
3108 | print_symbol_value_1 (stderr, sym); | |
3109 | fprintf (stderr, "\n"); | |
3110 | } | |
3111 | ||
3112 | static void | |
74937d39 | 3113 | print_binary (FILE *file, const char *name, expressionS *exp) |
252b5132 RH |
3114 | { |
3115 | indent_level++; | |
3116 | fprintf (file, "%s\n%*s<", name, indent_level * 4, ""); | |
3117 | print_symbol_value_1 (file, exp->X_add_symbol); | |
3118 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
3119 | print_symbol_value_1 (file, exp->X_op_symbol); | |
3120 | fprintf (file, ">"); | |
3121 | indent_level--; | |
3122 | } | |
3123 | ||
3124 | void | |
74937d39 | 3125 | print_expr_1 (FILE *file, expressionS *exp) |
252b5132 | 3126 | { |
d2df793a NC |
3127 | fprintf (file, "expr "); |
3128 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) exp)); | |
3129 | fprintf (file, " "); | |
252b5132 RH |
3130 | switch (exp->X_op) |
3131 | { | |
3132 | case O_illegal: | |
3133 | fprintf (file, "illegal"); | |
3134 | break; | |
3135 | case O_absent: | |
3136 | fprintf (file, "absent"); | |
3137 | break; | |
3138 | case O_constant: | |
0af1713e | 3139 | fprintf (file, "constant %lx", (unsigned long) exp->X_add_number); |
252b5132 RH |
3140 | break; |
3141 | case O_symbol: | |
3142 | indent_level++; | |
3143 | fprintf (file, "symbol\n%*s<", indent_level * 4, ""); | |
3144 | print_symbol_value_1 (file, exp->X_add_symbol); | |
3145 | fprintf (file, ">"); | |
3146 | maybe_print_addnum: | |
3147 | if (exp->X_add_number) | |
3148 | fprintf (file, "\n%*s%lx", indent_level * 4, "", | |
0af1713e | 3149 | (unsigned long) exp->X_add_number); |
252b5132 RH |
3150 | indent_level--; |
3151 | break; | |
3152 | case O_register: | |
3153 | fprintf (file, "register #%d", (int) exp->X_add_number); | |
3154 | break; | |
3155 | case O_big: | |
3156 | fprintf (file, "big"); | |
3157 | break; | |
3158 | case O_uminus: | |
3159 | fprintf (file, "uminus -<"); | |
3160 | indent_level++; | |
3161 | print_symbol_value_1 (file, exp->X_add_symbol); | |
3162 | fprintf (file, ">"); | |
3163 | goto maybe_print_addnum; | |
3164 | case O_bit_not: | |
3165 | fprintf (file, "bit_not"); | |
3166 | break; | |
3167 | case O_multiply: | |
3168 | print_binary (file, "multiply", exp); | |
3169 | break; | |
3170 | case O_divide: | |
3171 | print_binary (file, "divide", exp); | |
3172 | break; | |
3173 | case O_modulus: | |
3174 | print_binary (file, "modulus", exp); | |
3175 | break; | |
3176 | case O_left_shift: | |
3177 | print_binary (file, "lshift", exp); | |
3178 | break; | |
3179 | case O_right_shift: | |
3180 | print_binary (file, "rshift", exp); | |
3181 | break; | |
3182 | case O_bit_inclusive_or: | |
3183 | print_binary (file, "bit_ior", exp); | |
3184 | break; | |
3185 | case O_bit_exclusive_or: | |
3186 | print_binary (file, "bit_xor", exp); | |
3187 | break; | |
3188 | case O_bit_and: | |
3189 | print_binary (file, "bit_and", exp); | |
3190 | break; | |
3191 | case O_eq: | |
3192 | print_binary (file, "eq", exp); | |
3193 | break; | |
3194 | case O_ne: | |
3195 | print_binary (file, "ne", exp); | |
3196 | break; | |
3197 | case O_lt: | |
3198 | print_binary (file, "lt", exp); | |
3199 | break; | |
3200 | case O_le: | |
3201 | print_binary (file, "le", exp); | |
3202 | break; | |
3203 | case O_ge: | |
3204 | print_binary (file, "ge", exp); | |
3205 | break; | |
3206 | case O_gt: | |
3207 | print_binary (file, "gt", exp); | |
3208 | break; | |
3209 | case O_logical_and: | |
3210 | print_binary (file, "logical_and", exp); | |
3211 | break; | |
3212 | case O_logical_or: | |
3213 | print_binary (file, "logical_or", exp); | |
3214 | break; | |
3215 | case O_add: | |
3216 | indent_level++; | |
3217 | fprintf (file, "add\n%*s<", indent_level * 4, ""); | |
3218 | print_symbol_value_1 (file, exp->X_add_symbol); | |
3219 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
3220 | print_symbol_value_1 (file, exp->X_op_symbol); | |
3221 | fprintf (file, ">"); | |
3222 | goto maybe_print_addnum; | |
3223 | case O_subtract: | |
3224 | indent_level++; | |
3225 | fprintf (file, "subtract\n%*s<", indent_level * 4, ""); | |
3226 | print_symbol_value_1 (file, exp->X_add_symbol); | |
3227 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
3228 | print_symbol_value_1 (file, exp->X_op_symbol); | |
3229 | fprintf (file, ">"); | |
3230 | goto maybe_print_addnum; | |
3231 | default: | |
3232 | fprintf (file, "{unknown opcode %d}", (int) exp->X_op); | |
3233 | break; | |
3234 | } | |
3235 | fflush (stdout); | |
3236 | } | |
3237 | ||
3238 | void | |
74937d39 | 3239 | print_expr (expressionS *exp) |
252b5132 RH |
3240 | { |
3241 | print_expr_1 (stderr, exp); | |
3242 | fprintf (stderr, "\n"); | |
3243 | } | |
3244 | ||
3245 | void | |
74937d39 | 3246 | symbol_print_statistics (FILE *file) |
252b5132 RH |
3247 | { |
3248 | hash_print_statistics (file, "symbol table", sy_hash); | |
49309057 ILT |
3249 | hash_print_statistics (file, "mini local symbol table", local_hash); |
3250 | fprintf (file, "%lu mini local symbols created, %lu converted\n", | |
3251 | local_symbol_count, local_symbol_conversion_count); | |
252b5132 | 3252 | } |
280d71bf DB |
3253 | |
3254 | #ifdef OBJ_COMPLEX_RELC | |
3255 | ||
3256 | /* Convert given symbol to a new complex-relocation symbol name. This | |
6f12865c | 3257 | may be a recursive function, since it might be called for non-leaf |
280d71bf | 3258 | nodes (plain symbols) in the expression tree. The caller owns the |
6f12865c AM |
3259 | returning string, so should free it eventually. Errors are |
3260 | indicated via as_bad and a NULL return value. The given symbol | |
280d71bf DB |
3261 | is marked with sy_used_in_reloc. */ |
3262 | ||
3263 | char * | |
3264 | symbol_relc_make_sym (symbolS * sym) | |
3265 | { | |
3266 | char * terminal = NULL; | |
3267 | const char * sname; | |
3268 | char typetag; | |
3269 | int sname_len; | |
3270 | ||
9c2799c2 | 3271 | gas_assert (sym != NULL); |
280d71bf DB |
3272 | |
3273 | /* Recurse to symbol_relc_make_expr if this symbol | |
3274 | is defined as an expression or a plain value. */ | |
3275 | if ( S_GET_SEGMENT (sym) == expr_section | |
3276 | || S_GET_SEGMENT (sym) == absolute_section) | |
be0d3bbb | 3277 | return symbol_relc_make_expr (symbol_get_value_expression (sym)); |
280d71bf | 3278 | |
2469b3c5 | 3279 | /* This may be a "fake symbol", referring to ".". |
280d71bf DB |
3280 | Write out a special null symbol to refer to this position. */ |
3281 | if (! strcmp (S_GET_NAME (sym), FAKE_LABEL_NAME)) | |
3282 | return xstrdup ("."); | |
3283 | ||
3284 | /* We hope this is a plain leaf symbol. Construct the encoding | |
3285 | as {S,s}II...:CCCCCCC.... | |
3286 | where 'S'/'s' means section symbol / plain symbol | |
3287 | III is decimal for the symbol name length | |
3288 | CCC is the symbol name itself. */ | |
3289 | symbol_mark_used_in_reloc (sym); | |
3290 | ||
3291 | sname = S_GET_NAME (sym); | |
3292 | sname_len = strlen (sname); | |
3293 | typetag = symbol_section_p (sym) ? 'S' : 's'; | |
3294 | ||
add39d23 TS |
3295 | terminal = XNEWVEC (char, (1 /* S or s */ |
3296 | + 8 /* sname_len in decimal */ | |
3297 | + 1 /* _ spacer */ | |
3298 | + sname_len /* name itself */ | |
3299 | + 1 /* \0 */ )); | |
280d71bf DB |
3300 | |
3301 | sprintf (terminal, "%c%d:%s", typetag, sname_len, sname); | |
3302 | return terminal; | |
3303 | } | |
3304 | ||
3305 | /* Convert given value to a new complex-relocation symbol name. This | |
3306 | is a non-recursive function, since it is be called for leaf nodes | |
3307 | (plain values) in the expression tree. The caller owns the | |
3308 | returning string, so should free() it eventually. No errors. */ | |
3309 | ||
3310 | char * | |
3311 | symbol_relc_make_value (offsetT val) | |
3312 | { | |
325801bd | 3313 | char * terminal = XNEWVEC (char, 28); /* Enough for long long. */ |
280d71bf DB |
3314 | |
3315 | terminal[0] = '#'; | |
1a412f5f | 3316 | bfd_sprintf_vma (stdoutput, terminal + 1, val); |
280d71bf DB |
3317 | return terminal; |
3318 | } | |
3319 | ||
3320 | /* Convert given expression to a new complex-relocation symbol name. | |
3321 | This is a recursive function, since it traverses the entire given | |
3322 | expression tree. The caller owns the returning string, so should | |
3323 | free() it eventually. Errors are indicated via as_bad() and a NULL | |
3324 | return value. */ | |
3325 | ||
3326 | char * | |
3327 | symbol_relc_make_expr (expressionS * exp) | |
3328 | { | |
b9bb4a93 | 3329 | const char * opstr = NULL; /* Operator prefix string. */ |
280d71bf DB |
3330 | int arity = 0; /* Arity of this operator. */ |
3331 | char * operands[3]; /* Up to three operands. */ | |
3332 | char * concat_string = NULL; | |
3333 | ||
3334 | operands[0] = operands[1] = operands[2] = NULL; | |
3335 | ||
9c2799c2 | 3336 | gas_assert (exp != NULL); |
280d71bf DB |
3337 | |
3338 | /* Match known operators -> fill in opstr, arity, operands[] and fall | |
34bca508 | 3339 | through to construct subexpression fragments; may instead return |
280d71bf DB |
3340 | string directly for leaf nodes. */ |
3341 | ||
34bca508 | 3342 | /* See expr.h for the meaning of all these enums. Many operators |
280d71bf DB |
3343 | have an unnatural arity (X_add_number implicitly added). The |
3344 | conversion logic expands them to explicit "+" subexpressions. */ | |
3345 | ||
3346 | switch (exp->X_op) | |
3347 | { | |
3348 | default: | |
3349 | as_bad ("Unknown expression operator (enum %d)", exp->X_op); | |
3350 | break; | |
3351 | ||
3352 | /* Leaf nodes. */ | |
3353 | case O_constant: | |
3354 | return symbol_relc_make_value (exp->X_add_number); | |
3355 | ||
3356 | case O_symbol: | |
34bca508 L |
3357 | if (exp->X_add_number) |
3358 | { | |
3359 | arity = 2; | |
3360 | opstr = "+"; | |
280d71bf DB |
3361 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); |
3362 | operands[1] = symbol_relc_make_value (exp->X_add_number); | |
3363 | break; | |
3364 | } | |
3365 | else | |
3366 | return symbol_relc_make_sym (exp->X_add_symbol); | |
3367 | ||
3368 | /* Helper macros for nesting nodes. */ | |
3369 | ||
3370 | #define HANDLE_XADD_OPT1(str_) \ | |
3371 | if (exp->X_add_number) \ | |
3372 | { \ | |
3373 | arity = 2; \ | |
3374 | opstr = "+:" str_; \ | |
3375 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3376 | operands[1] = symbol_relc_make_value (exp->X_add_number); \ | |
3377 | break; \ | |
3378 | } \ | |
3379 | else \ | |
3380 | { \ | |
3381 | arity = 1; \ | |
3382 | opstr = str_; \ | |
3383 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3384 | } \ | |
3385 | break | |
34bca508 | 3386 | |
280d71bf DB |
3387 | #define HANDLE_XADD_OPT2(str_) \ |
3388 | if (exp->X_add_number) \ | |
3389 | { \ | |
3390 | arity = 3; \ | |
3391 | opstr = "+:" str_; \ | |
3392 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3393 | operands[1] = symbol_relc_make_sym (exp->X_op_symbol); \ | |
3394 | operands[2] = symbol_relc_make_value (exp->X_add_number); \ | |
3395 | } \ | |
3396 | else \ | |
3397 | { \ | |
3398 | arity = 2; \ | |
3399 | opstr = str_; \ | |
3400 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3401 | operands[1] = symbol_relc_make_sym (exp->X_op_symbol); \ | |
3402 | } \ | |
3403 | break | |
3404 | ||
3405 | /* Nesting nodes. */ | |
3406 | ||
3407 | case O_uminus: HANDLE_XADD_OPT1 ("0-"); | |
3408 | case O_bit_not: HANDLE_XADD_OPT1 ("~"); | |
3409 | case O_logical_not: HANDLE_XADD_OPT1 ("!"); | |
3410 | case O_multiply: HANDLE_XADD_OPT2 ("*"); | |
3411 | case O_divide: HANDLE_XADD_OPT2 ("/"); | |
3412 | case O_modulus: HANDLE_XADD_OPT2 ("%"); | |
3413 | case O_left_shift: HANDLE_XADD_OPT2 ("<<"); | |
3414 | case O_right_shift: HANDLE_XADD_OPT2 (">>"); | |
3415 | case O_bit_inclusive_or: HANDLE_XADD_OPT2 ("|"); | |
3416 | case O_bit_exclusive_or: HANDLE_XADD_OPT2 ("^"); | |
3417 | case O_bit_and: HANDLE_XADD_OPT2 ("&"); | |
3418 | case O_add: HANDLE_XADD_OPT2 ("+"); | |
3419 | case O_subtract: HANDLE_XADD_OPT2 ("-"); | |
3420 | case O_eq: HANDLE_XADD_OPT2 ("=="); | |
3421 | case O_ne: HANDLE_XADD_OPT2 ("!="); | |
3422 | case O_lt: HANDLE_XADD_OPT2 ("<"); | |
3423 | case O_le: HANDLE_XADD_OPT2 ("<="); | |
3424 | case O_ge: HANDLE_XADD_OPT2 (">="); | |
3425 | case O_gt: HANDLE_XADD_OPT2 (">"); | |
3426 | case O_logical_and: HANDLE_XADD_OPT2 ("&&"); | |
3427 | case O_logical_or: HANDLE_XADD_OPT2 ("||"); | |
3428 | } | |
3429 | ||
3430 | /* Validate & reject early. */ | |
3431 | if (arity >= 1 && ((operands[0] == NULL) || (strlen (operands[0]) == 0))) | |
3432 | opstr = NULL; | |
3433 | if (arity >= 2 && ((operands[1] == NULL) || (strlen (operands[1]) == 0))) | |
3434 | opstr = NULL; | |
3435 | if (arity >= 3 && ((operands[2] == NULL) || (strlen (operands[2]) == 0))) | |
3436 | opstr = NULL; | |
3437 | ||
3438 | if (opstr == NULL) | |
3439 | concat_string = NULL; | |
29a2809e TS |
3440 | else if (arity == 0) |
3441 | concat_string = xstrdup (opstr); | |
3442 | else if (arity == 1) | |
3443 | concat_string = concat (opstr, ":", operands[0], (char *) NULL); | |
3444 | else if (arity == 2) | |
3445 | concat_string = concat (opstr, ":", operands[0], ":", operands[1], | |
3446 | (char *) NULL); | |
280d71bf | 3447 | else |
29a2809e TS |
3448 | concat_string = concat (opstr, ":", operands[0], ":", operands[1], ":", |
3449 | operands[2], (char *) NULL); | |
280d71bf DB |
3450 | |
3451 | /* Free operand strings (not opstr). */ | |
3452 | if (arity >= 1) xfree (operands[0]); | |
3453 | if (arity >= 2) xfree (operands[1]); | |
3454 | if (arity >= 3) xfree (operands[2]); | |
3455 | ||
3456 | return concat_string; | |
3457 | } | |
3458 | ||
3459 | #endif |