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252b5132 | 1 | /* symbols.c -symbol table- |
4b95cf5c | 2 | Copyright (C) 1987-2014 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" | |
49309057 ILT |
27 | #include "struc-symbol.h" |
28 | ||
252b5132 RH |
29 | /* This is non-zero if symbols are case sensitive, which is the |
30 | default. */ | |
31 | int symbols_case_sensitive = 1; | |
32 | ||
33 | #ifndef WORKING_DOT_WORD | |
34 | extern int new_broken_words; | |
35 | #endif | |
36 | ||
37 | /* symbol-name => struct symbol pointer */ | |
38 | static struct hash_control *sy_hash; | |
39 | ||
49309057 ILT |
40 | /* Table of local symbols. */ |
41 | static struct hash_control *local_hash; | |
42 | ||
7c743825 | 43 | /* Below are commented in "symbols.h". */ |
252b5132 RH |
44 | symbolS *symbol_rootP; |
45 | symbolS *symbol_lastP; | |
46 | symbolS abs_symbol; | |
4a826962 | 47 | symbolS dot_symbol; |
252b5132 RH |
48 | |
49 | #ifdef DEBUG_SYMS | |
50 | #define debug_verify_symchain verify_symbol_chain | |
51 | #else | |
52 | #define debug_verify_symchain(root, last) ((void) 0) | |
53 | #endif | |
54 | ||
aa257fcd NC |
55 | #define DOLLAR_LABEL_CHAR '\001' |
56 | #define LOCAL_LABEL_CHAR '\002' | |
57 | ||
df58fc94 RS |
58 | #ifndef TC_LABEL_IS_LOCAL |
59 | #define TC_LABEL_IS_LOCAL(name) 0 | |
60 | #endif | |
61 | ||
252b5132 | 62 | struct obstack notes; |
22ba0981 | 63 | #ifdef TE_PE |
977cdf5a NC |
64 | /* The name of an external symbol which is |
65 | used to make weak PE symbol names unique. */ | |
66 | const char * an_external_name; | |
67 | #endif | |
252b5132 | 68 | |
74937d39 KH |
69 | static char *save_symbol_name (const char *); |
70 | static void fb_label_init (void); | |
71 | static long dollar_label_instance (long); | |
72 | static long fb_label_instance (long); | |
252b5132 | 73 | |
74937d39 | 74 | static void print_binary (FILE *, const char *, expressionS *); |
252b5132 | 75 | |
7c743825 | 76 | /* Return a pointer to a new symbol. Die if we can't make a new |
252b5132 RH |
77 | symbol. Fill in the symbol's values. Add symbol to end of symbol |
78 | chain. | |
7c743825 | 79 | |
252b5132 RH |
80 | This function should be called in the general case of creating a |
81 | symbol. However, if the output file symbol table has already been | |
82 | set, and you are certain that this symbol won't be wanted in the | |
83 | output file, you can call symbol_create. */ | |
84 | ||
85 | symbolS * | |
74937d39 | 86 | symbol_new (const char *name, segT segment, valueT valu, fragS *frag) |
252b5132 RH |
87 | { |
88 | symbolS *symbolP = symbol_create (name, segment, valu, frag); | |
89 | ||
7c743825 | 90 | /* Link to end of symbol chain. */ |
252b5132 RH |
91 | { |
92 | extern int symbol_table_frozen; | |
93 | if (symbol_table_frozen) | |
94 | abort (); | |
95 | } | |
252b5132 RH |
96 | symbol_append (symbolP, symbol_lastP, &symbol_rootP, &symbol_lastP); |
97 | ||
98 | return symbolP; | |
99 | } | |
100 | ||
49309057 ILT |
101 | /* Save a symbol name on a permanent obstack, and convert it according |
102 | to the object file format. */ | |
103 | ||
104 | static char * | |
74937d39 | 105 | save_symbol_name (const char *name) |
252b5132 RH |
106 | { |
107 | unsigned int name_length; | |
49309057 | 108 | char *ret; |
252b5132 | 109 | |
7c743825 | 110 | name_length = strlen (name) + 1; /* +1 for \0. */ |
252b5132 | 111 | obstack_grow (¬es, name, name_length); |
1e9cc1c2 | 112 | ret = (char *) obstack_finish (¬es); |
49309057 | 113 | |
252b5132 | 114 | #ifdef tc_canonicalize_symbol_name |
49309057 | 115 | ret = tc_canonicalize_symbol_name (ret); |
252b5132 RH |
116 | #endif |
117 | ||
118 | if (! symbols_case_sensitive) | |
119 | { | |
3882b010 | 120 | char *s; |
252b5132 | 121 | |
3882b010 L |
122 | for (s = ret; *s != '\0'; s++) |
123 | *s = TOUPPER (*s); | |
252b5132 RH |
124 | } |
125 | ||
49309057 ILT |
126 | return ret; |
127 | } | |
128 | ||
129 | symbolS * | |
74937d39 KH |
130 | symbol_create (const char *name, /* It is copied, the caller can destroy/modify. */ |
131 | segT segment, /* Segment identifier (SEG_<something>). */ | |
132 | valueT valu, /* Symbol value. */ | |
133 | fragS *frag /* Associated fragment. */) | |
49309057 ILT |
134 | { |
135 | char *preserved_copy_of_name; | |
136 | symbolS *symbolP; | |
137 | ||
138 | preserved_copy_of_name = save_symbol_name (name); | |
139 | ||
1e9cc1c2 | 140 | symbolP = (symbolS *) obstack_alloc (¬es, sizeof (symbolS)); |
252b5132 | 141 | |
7c743825 | 142 | /* symbol must be born in some fixed state. This seems as good as any. */ |
252b5132 RH |
143 | memset (symbolP, 0, sizeof (symbolS)); |
144 | ||
252b5132 RH |
145 | symbolP->bsym = bfd_make_empty_symbol (stdoutput); |
146 | if (symbolP->bsym == NULL) | |
885afe7b | 147 | as_fatal ("bfd_make_empty_symbol: %s", bfd_errmsg (bfd_get_error ())); |
252b5132 RH |
148 | S_SET_NAME (symbolP, preserved_copy_of_name); |
149 | ||
150 | S_SET_SEGMENT (symbolP, segment); | |
151 | S_SET_VALUE (symbolP, valu); | |
152 | symbol_clear_list_pointers (symbolP); | |
153 | ||
154 | symbolP->sy_frag = frag; | |
252b5132 RH |
155 | |
156 | obj_symbol_new_hook (symbolP); | |
157 | ||
158 | #ifdef tc_symbol_new_hook | |
159 | tc_symbol_new_hook (symbolP); | |
160 | #endif | |
161 | ||
162 | return symbolP; | |
163 | } | |
164 | \f | |
49309057 ILT |
165 | |
166 | /* Local symbol support. If we can get away with it, we keep only a | |
167 | small amount of information for local symbols. */ | |
168 | ||
74937d39 | 169 | static symbolS *local_symbol_convert (struct local_symbol *); |
49309057 ILT |
170 | |
171 | /* Used for statistics. */ | |
172 | ||
173 | static unsigned long local_symbol_count; | |
174 | static unsigned long local_symbol_conversion_count; | |
175 | ||
176 | /* This macro is called with a symbol argument passed by reference. | |
177 | It returns whether this is a local symbol. If necessary, it | |
178 | changes its argument to the real symbol. */ | |
179 | ||
180 | #define LOCAL_SYMBOL_CHECK(s) \ | |
158184ac | 181 | (s->sy_flags.sy_local_symbol \ |
49309057 ILT |
182 | ? (local_symbol_converted_p ((struct local_symbol *) s) \ |
183 | ? (s = local_symbol_get_real_symbol ((struct local_symbol *) s), \ | |
184 | 0) \ | |
185 | : 1) \ | |
186 | : 0) | |
187 | ||
188 | /* Create a local symbol and insert it into the local hash table. */ | |
189 | ||
00ce9deb | 190 | struct local_symbol * |
91d6fa6a | 191 | local_symbol_make (const char *name, segT section, valueT val, fragS *frag) |
49309057 ILT |
192 | { |
193 | char *name_copy; | |
194 | struct local_symbol *ret; | |
195 | ||
196 | ++local_symbol_count; | |
197 | ||
198 | name_copy = save_symbol_name (name); | |
199 | ||
1e9cc1c2 | 200 | ret = (struct local_symbol *) obstack_alloc (¬es, sizeof *ret); |
158184ac TG |
201 | ret->lsy_flags.sy_local_symbol = 1; |
202 | ret->lsy_flags.sy_resolved = 0; | |
49309057 ILT |
203 | ret->lsy_name = name_copy; |
204 | ret->lsy_section = section; | |
205 | local_symbol_set_frag (ret, frag); | |
91d6fa6a | 206 | ret->lsy_value = val; |
49309057 | 207 | |
5a49b8ac | 208 | hash_jam (local_hash, name_copy, (void *) ret); |
49309057 ILT |
209 | |
210 | return ret; | |
211 | } | |
212 | ||
213 | /* Convert a local symbol into a real symbol. Note that we do not | |
214 | reclaim the space used by the local symbol. */ | |
215 | ||
216 | static symbolS * | |
74937d39 | 217 | local_symbol_convert (struct local_symbol *locsym) |
49309057 ILT |
218 | { |
219 | symbolS *ret; | |
220 | ||
158184ac | 221 | gas_assert (locsym->lsy_flags.sy_local_symbol); |
49309057 ILT |
222 | if (local_symbol_converted_p (locsym)) |
223 | return local_symbol_get_real_symbol (locsym); | |
224 | ||
225 | ++local_symbol_conversion_count; | |
226 | ||
bd780143 | 227 | ret = symbol_new (locsym->lsy_name, locsym->lsy_section, locsym->lsy_value, |
49309057 ILT |
228 | local_symbol_get_frag (locsym)); |
229 | ||
230 | if (local_symbol_resolved_p (locsym)) | |
158184ac | 231 | ret->sy_flags.sy_resolved = 1; |
49309057 ILT |
232 | |
233 | /* Local symbols are always either defined or used. */ | |
158184ac | 234 | ret->sy_flags.sy_used = 1; |
49309057 | 235 | |
8c5e1ccd AO |
236 | #ifdef TC_LOCAL_SYMFIELD_CONVERT |
237 | TC_LOCAL_SYMFIELD_CONVERT (locsym, ret); | |
238 | #endif | |
239 | ||
49309057 ILT |
240 | symbol_table_insert (ret); |
241 | ||
242 | local_symbol_mark_converted (locsym); | |
243 | local_symbol_set_real_symbol (locsym, ret); | |
244 | ||
245 | hash_jam (local_hash, locsym->lsy_name, NULL); | |
246 | ||
247 | return ret; | |
248 | } | |
49309057 | 249 | \f |
a3371076 AM |
250 | static void |
251 | define_sym_at_dot (symbolS *symbolP) | |
252 | { | |
253 | symbolP->sy_frag = frag_now; | |
a3371076 AM |
254 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); |
255 | S_SET_SEGMENT (symbolP, now_seg); | |
256 | } | |
257 | ||
7c743825 KH |
258 | /* We have just seen "<name>:". |
259 | Creates a struct symbol unless it already exists. | |
260 | ||
261 | Gripes if we are redefining a symbol incompatibly (and ignores it). */ | |
252b5132 | 262 | |
252b5132 | 263 | symbolS * |
74937d39 KH |
264 | colon (/* Just seen "x:" - rattle symbols & frags. */ |
265 | const char *sym_name /* Symbol name, as a cannonical string. */ | |
266 | /* We copy this string: OK to alter later. */) | |
252b5132 | 267 | { |
7c743825 | 268 | register symbolS *symbolP; /* Symbol we are working with. */ |
252b5132 | 269 | |
7cf10893 | 270 | /* Sun local labels go out of scope whenever a non-local symbol is |
252b5132 | 271 | defined. */ |
7be1c489 AM |
272 | if (LOCAL_LABELS_DOLLAR |
273 | && !bfd_is_local_label_name (stdoutput, sym_name)) | |
274 | dollar_label_clear (); | |
252b5132 RH |
275 | |
276 | #ifndef WORKING_DOT_WORD | |
277 | if (new_broken_words) | |
278 | { | |
279 | struct broken_word *a; | |
280 | int possible_bytes; | |
281 | fragS *frag_tmp; | |
282 | char *frag_opcode; | |
283 | ||
7cf10893 NC |
284 | if (now_seg == absolute_section) |
285 | { | |
286 | as_bad (_("cannot define symbol `%s' in absolute section"), sym_name); | |
287 | return NULL; | |
288 | } | |
1d3b2b27 | 289 | |
252b5132 RH |
290 | possible_bytes = (md_short_jump_size |
291 | + new_broken_words * md_long_jump_size); | |
292 | ||
293 | frag_tmp = frag_now; | |
294 | frag_opcode = frag_var (rs_broken_word, | |
295 | possible_bytes, | |
296 | possible_bytes, | |
297 | (relax_substateT) 0, | |
298 | (symbolS *) broken_words, | |
299 | (offsetT) 0, | |
300 | NULL); | |
301 | ||
7c743825 KH |
302 | /* We want to store the pointer to where to insert the jump |
303 | table in the fr_opcode of the rs_broken_word frag. This | |
304 | requires a little hackery. */ | |
252b5132 RH |
305 | while (frag_tmp |
306 | && (frag_tmp->fr_type != rs_broken_word | |
307 | || frag_tmp->fr_opcode)) | |
308 | frag_tmp = frag_tmp->fr_next; | |
309 | know (frag_tmp); | |
310 | frag_tmp->fr_opcode = frag_opcode; | |
311 | new_broken_words = 0; | |
312 | ||
313 | for (a = broken_words; a && a->dispfrag == 0; a = a->next_broken_word) | |
314 | a->dispfrag = frag_tmp; | |
315 | } | |
316 | #endif /* WORKING_DOT_WORD */ | |
317 | ||
cdaa5616 IS |
318 | #ifdef obj_frob_colon |
319 | obj_frob_colon (sym_name); | |
320 | #endif | |
321 | ||
252b5132 RH |
322 | if ((symbolP = symbol_find (sym_name)) != 0) |
323 | { | |
06e77878 | 324 | S_CLEAR_WEAKREFR (symbolP); |
252b5132 RH |
325 | #ifdef RESOLVE_SYMBOL_REDEFINITION |
326 | if (RESOLVE_SYMBOL_REDEFINITION (symbolP)) | |
327 | return symbolP; | |
328 | #endif | |
7c743825 | 329 | /* Now check for undefined symbols. */ |
49309057 ILT |
330 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
331 | { | |
332 | struct local_symbol *locsym = (struct local_symbol *) symbolP; | |
333 | ||
334 | if (locsym->lsy_section != undefined_section | |
335 | && (local_symbol_get_frag (locsym) != frag_now | |
336 | || locsym->lsy_section != now_seg | |
bd780143 | 337 | || locsym->lsy_value != frag_now_fix ())) |
49309057 | 338 | { |
0e389e77 | 339 | as_bad (_("symbol `%s' is already defined"), sym_name); |
49309057 ILT |
340 | return symbolP; |
341 | } | |
342 | ||
343 | locsym->lsy_section = now_seg; | |
344 | local_symbol_set_frag (locsym, frag_now); | |
bd780143 | 345 | locsym->lsy_value = frag_now_fix (); |
49309057 | 346 | } |
b54788f8 | 347 | else if (!(S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
92757bc9 JB |
348 | || S_IS_COMMON (symbolP) |
349 | || S_IS_VOLATILE (symbolP)) | |
252b5132 | 350 | { |
89cdfe57 | 351 | if (S_IS_VOLATILE (symbolP)) |
92757bc9 JB |
352 | { |
353 | symbolP = symbol_clone (symbolP, 1); | |
354 | S_SET_VALUE (symbolP, 0); | |
355 | S_CLEAR_VOLATILE (symbolP); | |
356 | } | |
252b5132 RH |
357 | if (S_GET_VALUE (symbolP) == 0) |
358 | { | |
a3371076 | 359 | define_sym_at_dot (symbolP); |
252b5132 RH |
360 | #ifdef N_UNDF |
361 | know (N_UNDF == 0); | |
7c743825 | 362 | #endif /* if we have one, it better be zero. */ |
252b5132 RH |
363 | |
364 | } | |
365 | else | |
366 | { | |
7c743825 KH |
367 | /* There are still several cases to check: |
368 | ||
369 | A .comm/.lcomm symbol being redefined as initialized | |
370 | data is OK | |
371 | ||
372 | A .comm/.lcomm symbol being redefined with a larger | |
373 | size is also OK | |
374 | ||
375 | This only used to be allowed on VMS gas, but Sun cc | |
376 | on the sparc also depends on it. */ | |
252b5132 RH |
377 | |
378 | if (((!S_IS_DEBUG (symbolP) | |
379 | && (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)) | |
380 | && S_IS_EXTERNAL (symbolP)) | |
381 | || S_GET_SEGMENT (symbolP) == bss_section) | |
382 | && (now_seg == data_section | |
b3ce1bf7 | 383 | || now_seg == bss_section |
252b5132 RH |
384 | || now_seg == S_GET_SEGMENT (symbolP))) |
385 | { | |
7c743825 | 386 | /* Select which of the 2 cases this is. */ |
252b5132 RH |
387 | if (now_seg != data_section) |
388 | { | |
7c743825 KH |
389 | /* New .comm for prev .comm symbol. |
390 | ||
391 | If the new size is larger we just change its | |
392 | value. If the new size is smaller, we ignore | |
393 | this symbol. */ | |
252b5132 RH |
394 | if (S_GET_VALUE (symbolP) |
395 | < ((unsigned) frag_now_fix ())) | |
396 | { | |
397 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
398 | } | |
399 | } | |
400 | else | |
401 | { | |
402 | /* It is a .comm/.lcomm being converted to initialized | |
403 | data. */ | |
a3371076 | 404 | define_sym_at_dot (symbolP); |
252b5132 RH |
405 | } |
406 | } | |
407 | else | |
408 | { | |
4c63da97 AM |
409 | #if (!defined (OBJ_AOUT) && !defined (OBJ_MAYBE_AOUT) \ |
410 | && !defined (OBJ_BOUT) && !defined (OBJ_MAYBE_BOUT)) | |
411 | static const char *od_buf = ""; | |
252b5132 | 412 | #else |
4c63da97 AM |
413 | char od_buf[100]; |
414 | od_buf[0] = '\0'; | |
4c63da97 | 415 | if (OUTPUT_FLAVOR == bfd_target_aout_flavour) |
d1a6c242 KH |
416 | sprintf (od_buf, "%d.%d.", |
417 | S_GET_OTHER (symbolP), | |
418 | S_GET_DESC (symbolP)); | |
4c63da97 | 419 | #endif |
0e389e77 | 420 | as_bad (_("symbol `%s' is already defined as \"%s\"/%s%ld"), |
252b5132 RH |
421 | sym_name, |
422 | segment_name (S_GET_SEGMENT (symbolP)), | |
4c63da97 | 423 | od_buf, |
252b5132 | 424 | (long) S_GET_VALUE (symbolP)); |
252b5132 | 425 | } |
7c743825 | 426 | } /* if the undefined symbol has no value */ |
252b5132 RH |
427 | } |
428 | else | |
429 | { | |
7c743825 | 430 | /* Don't blow up if the definition is the same. */ |
252b5132 RH |
431 | if (!(frag_now == symbolP->sy_frag |
432 | && S_GET_VALUE (symbolP) == frag_now_fix () | |
433 | && S_GET_SEGMENT (symbolP) == now_seg)) | |
92757bc9 JB |
434 | { |
435 | as_bad (_("symbol `%s' is already defined"), sym_name); | |
436 | symbolP = symbol_clone (symbolP, 0); | |
a3371076 | 437 | define_sym_at_dot (symbolP); |
92757bc9 | 438 | } |
d4887adc | 439 | } |
252b5132 RH |
440 | |
441 | } | |
49309057 ILT |
442 | else if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, sym_name)) |
443 | { | |
444 | symbolP = (symbolS *) local_symbol_make (sym_name, now_seg, | |
445 | (valueT) frag_now_fix (), | |
446 | frag_now); | |
447 | } | |
252b5132 RH |
448 | else |
449 | { | |
450 | symbolP = symbol_new (sym_name, now_seg, (valueT) frag_now_fix (), | |
451 | frag_now); | |
252b5132 RH |
452 | |
453 | symbol_table_insert (symbolP); | |
d4887adc | 454 | } |
252b5132 RH |
455 | |
456 | if (mri_common_symbol != NULL) | |
457 | { | |
458 | /* This symbol is actually being defined within an MRI common | |
1d3b2b27 | 459 | section. This requires special handling. */ |
49309057 ILT |
460 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
461 | symbolP = local_symbol_convert ((struct local_symbol *) symbolP); | |
252b5132 RH |
462 | symbolP->sy_value.X_op = O_symbol; |
463 | symbolP->sy_value.X_add_symbol = mri_common_symbol; | |
464 | symbolP->sy_value.X_add_number = S_GET_VALUE (mri_common_symbol); | |
465 | symbolP->sy_frag = &zero_address_frag; | |
466 | S_SET_SEGMENT (symbolP, expr_section); | |
158184ac | 467 | symbolP->sy_flags.sy_mri_common = 1; |
252b5132 RH |
468 | } |
469 | ||
470 | #ifdef tc_frob_label | |
471 | tc_frob_label (symbolP); | |
472 | #endif | |
473 | #ifdef obj_frob_label | |
474 | obj_frob_label (symbolP); | |
475 | #endif | |
476 | ||
477 | return symbolP; | |
478 | } | |
479 | \f | |
7c743825 | 480 | /* Die if we can't insert the symbol. */ |
252b5132 | 481 | |
7c743825 | 482 | void |
74937d39 | 483 | symbol_table_insert (symbolS *symbolP) |
252b5132 RH |
484 | { |
485 | register const char *error_string; | |
486 | ||
487 | know (symbolP); | |
488 | know (S_GET_NAME (symbolP)); | |
489 | ||
49309057 ILT |
490 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
491 | { | |
492 | error_string = hash_jam (local_hash, S_GET_NAME (symbolP), | |
5a49b8ac | 493 | (void *) symbolP); |
49309057 | 494 | if (error_string != NULL) |
0e389e77 | 495 | as_fatal (_("inserting \"%s\" into symbol table failed: %s"), |
49309057 ILT |
496 | S_GET_NAME (symbolP), error_string); |
497 | return; | |
498 | } | |
499 | ||
5a49b8ac | 500 | if ((error_string = hash_jam (sy_hash, S_GET_NAME (symbolP), (void *) symbolP))) |
252b5132 | 501 | { |
0e389e77 | 502 | as_fatal (_("inserting \"%s\" into symbol table failed: %s"), |
252b5132 | 503 | S_GET_NAME (symbolP), error_string); |
7c743825 KH |
504 | } /* on error */ |
505 | } | |
252b5132 | 506 | \f |
7c743825 KH |
507 | /* If a symbol name does not exist, create it as undefined, and insert |
508 | it into the symbol table. Return a pointer to it. */ | |
509 | ||
252b5132 | 510 | symbolS * |
74937d39 | 511 | symbol_find_or_make (const char *name) |
252b5132 RH |
512 | { |
513 | register symbolS *symbolP; | |
514 | ||
515 | symbolP = symbol_find (name); | |
516 | ||
517 | if (symbolP == NULL) | |
518 | { | |
49309057 ILT |
519 | if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, name)) |
520 | { | |
521 | symbolP = md_undefined_symbol ((char *) name); | |
522 | if (symbolP != NULL) | |
523 | return symbolP; | |
524 | ||
525 | symbolP = (symbolS *) local_symbol_make (name, undefined_section, | |
526 | (valueT) 0, | |
527 | &zero_address_frag); | |
528 | return symbolP; | |
529 | } | |
49309057 | 530 | |
252b5132 RH |
531 | symbolP = symbol_make (name); |
532 | ||
533 | symbol_table_insert (symbolP); | |
534 | } /* if symbol wasn't found */ | |
535 | ||
536 | return (symbolP); | |
7c743825 | 537 | } |
252b5132 RH |
538 | |
539 | symbolS * | |
74937d39 | 540 | symbol_make (const char *name) |
252b5132 RH |
541 | { |
542 | symbolS *symbolP; | |
543 | ||
7c743825 | 544 | /* Let the machine description default it, e.g. for register names. */ |
252b5132 RH |
545 | symbolP = md_undefined_symbol ((char *) name); |
546 | ||
547 | if (!symbolP) | |
548 | symbolP = symbol_new (name, undefined_section, (valueT) 0, &zero_address_frag); | |
549 | ||
550 | return (symbolP); | |
7c743825 | 551 | } |
252b5132 | 552 | |
9497f5ac NC |
553 | symbolS * |
554 | symbol_clone (symbolS *orgsymP, int replace) | |
555 | { | |
556 | symbolS *newsymP; | |
6a2b6326 | 557 | asymbol *bsymorg, *bsymnew; |
9497f5ac | 558 | |
4a826962 MR |
559 | /* Make sure we never clone the dot special symbol. */ |
560 | gas_assert (orgsymP != &dot_symbol); | |
561 | ||
9497f5ac NC |
562 | /* Running local_symbol_convert on a clone that's not the one currently |
563 | in local_hash would incorrectly replace the hash entry. Thus the | |
564 | symbol must be converted here. Note that the rest of the function | |
565 | depends on not encountering an unconverted symbol. */ | |
566 | if (LOCAL_SYMBOL_CHECK (orgsymP)) | |
567 | orgsymP = local_symbol_convert ((struct local_symbol *) orgsymP); | |
6a2b6326 | 568 | bsymorg = orgsymP->bsym; |
9497f5ac | 569 | |
1e9cc1c2 | 570 | newsymP = (symbolS *) obstack_alloc (¬es, sizeof (*newsymP)); |
9497f5ac | 571 | *newsymP = *orgsymP; |
6a2b6326 JB |
572 | bsymnew = bfd_make_empty_symbol (bfd_asymbol_bfd (bsymorg)); |
573 | if (bsymnew == NULL) | |
885afe7b | 574 | as_fatal ("bfd_make_empty_symbol: %s", bfd_errmsg (bfd_get_error ())); |
6a2b6326 JB |
575 | newsymP->bsym = bsymnew; |
576 | bsymnew->name = bsymorg->name; | |
25313d6a | 577 | bsymnew->flags = bsymorg->flags & ~BSF_SECTION_SYM; |
9d75b288 | 578 | bsymnew->section = bsymorg->section; |
6a2b6326 JB |
579 | bfd_copy_private_symbol_data (bfd_asymbol_bfd (bsymorg), bsymorg, |
580 | bfd_asymbol_bfd (bsymnew), bsymnew); | |
581 | ||
582 | #ifdef obj_symbol_clone_hook | |
583 | obj_symbol_clone_hook (newsymP, orgsymP); | |
584 | #endif | |
585 | ||
586 | #ifdef tc_symbol_clone_hook | |
587 | tc_symbol_clone_hook (newsymP, orgsymP); | |
588 | #endif | |
9497f5ac NC |
589 | |
590 | if (replace) | |
591 | { | |
592 | if (symbol_rootP == orgsymP) | |
593 | symbol_rootP = newsymP; | |
594 | else if (orgsymP->sy_previous) | |
595 | { | |
596 | orgsymP->sy_previous->sy_next = newsymP; | |
597 | orgsymP->sy_previous = NULL; | |
598 | } | |
599 | if (symbol_lastP == orgsymP) | |
600 | symbol_lastP = newsymP; | |
601 | else if (orgsymP->sy_next) | |
602 | orgsymP->sy_next->sy_previous = newsymP; | |
73e24c68 AM |
603 | |
604 | /* Symbols that won't be output can't be external. */ | |
605 | S_CLEAR_EXTERNAL (orgsymP); | |
bdf128d6 | 606 | orgsymP->sy_previous = orgsymP->sy_next = orgsymP; |
9497f5ac NC |
607 | debug_verify_symchain (symbol_rootP, symbol_lastP); |
608 | ||
609 | symbol_table_insert (newsymP); | |
610 | } | |
bdf128d6 | 611 | else |
73e24c68 AM |
612 | { |
613 | /* Symbols that won't be output can't be external. */ | |
614 | S_CLEAR_EXTERNAL (newsymP); | |
615 | newsymP->sy_previous = newsymP->sy_next = newsymP; | |
616 | } | |
9497f5ac NC |
617 | |
618 | return newsymP; | |
619 | } | |
620 | ||
621 | /* Referenced symbols, if they are forward references, need to be cloned | |
622 | (without replacing the original) so that the value of the referenced | |
623 | symbols at the point of use . */ | |
624 | ||
625 | #undef symbol_clone_if_forward_ref | |
626 | symbolS * | |
627 | symbol_clone_if_forward_ref (symbolS *symbolP, int is_forward) | |
628 | { | |
629 | if (symbolP && !LOCAL_SYMBOL_CHECK (symbolP)) | |
630 | { | |
631 | symbolS *add_symbol = symbolP->sy_value.X_add_symbol; | |
632 | symbolS *op_symbol = symbolP->sy_value.X_op_symbol; | |
633 | ||
158184ac | 634 | if (symbolP->sy_flags.sy_forward_ref) |
9497f5ac NC |
635 | is_forward = 1; |
636 | ||
637 | if (is_forward) | |
638 | { | |
639 | /* assign_symbol() clones volatile symbols; pre-existing expressions | |
640 | hold references to the original instance, but want the current | |
641 | value. Just repeat the lookup. */ | |
642 | if (add_symbol && S_IS_VOLATILE (add_symbol)) | |
643 | add_symbol = symbol_find_exact (S_GET_NAME (add_symbol)); | |
644 | if (op_symbol && S_IS_VOLATILE (op_symbol)) | |
645 | op_symbol = symbol_find_exact (S_GET_NAME (op_symbol)); | |
646 | } | |
647 | ||
648 | /* Re-using sy_resolving here, as this routine cannot get called from | |
649 | symbol resolution code. */ | |
158184ac TG |
650 | if ((symbolP->bsym->section == expr_section |
651 | || symbolP->sy_flags.sy_forward_ref) | |
652 | && !symbolP->sy_flags.sy_resolving) | |
9497f5ac | 653 | { |
158184ac | 654 | symbolP->sy_flags.sy_resolving = 1; |
9497f5ac NC |
655 | add_symbol = symbol_clone_if_forward_ref (add_symbol, is_forward); |
656 | op_symbol = symbol_clone_if_forward_ref (op_symbol, is_forward); | |
158184ac | 657 | symbolP->sy_flags.sy_resolving = 0; |
9497f5ac NC |
658 | } |
659 | ||
158184ac | 660 | if (symbolP->sy_flags.sy_forward_ref |
9497f5ac NC |
661 | || add_symbol != symbolP->sy_value.X_add_symbol |
662 | || op_symbol != symbolP->sy_value.X_op_symbol) | |
3df4e177 | 663 | { |
4a826962 MR |
664 | if (symbolP != &dot_symbol) |
665 | { | |
666 | symbolP = symbol_clone (symbolP, 0); | |
158184ac | 667 | symbolP->sy_flags.sy_resolving = 0; |
4a826962 MR |
668 | } |
669 | else | |
a1facbec MR |
670 | { |
671 | symbolP = symbol_temp_new_now (); | |
672 | #ifdef tc_new_dot_label | |
673 | tc_new_dot_label (symbolP); | |
674 | #endif | |
675 | } | |
3df4e177 | 676 | } |
9497f5ac NC |
677 | |
678 | symbolP->sy_value.X_add_symbol = add_symbol; | |
679 | symbolP->sy_value.X_op_symbol = op_symbol; | |
680 | } | |
681 | ||
682 | return symbolP; | |
683 | } | |
684 | ||
b7d6ed97 | 685 | symbolS * |
74937d39 | 686 | symbol_temp_new (segT seg, valueT ofs, fragS *frag) |
b7d6ed97 | 687 | { |
756d1d01 | 688 | return symbol_new (FAKE_LABEL_NAME, seg, ofs, frag); |
b7d6ed97 RH |
689 | } |
690 | ||
691 | symbolS * | |
74937d39 | 692 | symbol_temp_new_now (void) |
b7d6ed97 RH |
693 | { |
694 | return symbol_temp_new (now_seg, frag_now_fix (), frag_now); | |
695 | } | |
696 | ||
697 | symbolS * | |
74937d39 | 698 | symbol_temp_make (void) |
b7d6ed97 | 699 | { |
756d1d01 | 700 | return symbol_make (FAKE_LABEL_NAME); |
b7d6ed97 RH |
701 | } |
702 | ||
7c743825 KH |
703 | /* Implement symbol table lookup. |
704 | In: A symbol's name as a string: '\0' can't be part of a symbol name. | |
705 | Out: NULL if the name was not in the symbol table, else the address | |
706 | of a struct symbol associated with that name. */ | |
252b5132 | 707 | |
9758f3fc | 708 | symbolS * |
74937d39 | 709 | symbol_find_exact (const char *name) |
06e77878 AO |
710 | { |
711 | return symbol_find_exact_noref (name, 0); | |
712 | } | |
713 | ||
714 | symbolS * | |
715 | symbol_find_exact_noref (const char *name, int noref) | |
9758f3fc | 716 | { |
7be1c489 | 717 | struct local_symbol *locsym; |
06e77878 | 718 | symbolS* sym; |
9758f3fc | 719 | |
7be1c489 AM |
720 | locsym = (struct local_symbol *) hash_find (local_hash, name); |
721 | if (locsym != NULL) | |
722 | return (symbolS *) locsym; | |
9758f3fc | 723 | |
06e77878 AO |
724 | sym = ((symbolS *) hash_find (sy_hash, name)); |
725 | ||
726 | /* Any references to the symbol, except for the reference in | |
727 | .weakref, must clear this flag, such that the symbol does not | |
728 | turn into a weak symbol. Note that we don't have to handle the | |
729 | local_symbol case, since a weakrefd is always promoted out of the | |
730 | local_symbol table when it is turned into a weak symbol. */ | |
731 | if (sym && ! noref) | |
732 | S_CLEAR_WEAKREFD (sym); | |
733 | ||
734 | return sym; | |
9758f3fc AM |
735 | } |
736 | ||
252b5132 | 737 | symbolS * |
91c4c449 | 738 | symbol_find (const char *name) |
06e77878 AO |
739 | { |
740 | return symbol_find_noref (name, 0); | |
741 | } | |
742 | ||
743 | symbolS * | |
744 | symbol_find_noref (const char *name, int noref) | |
252b5132 | 745 | { |
252b5132 RH |
746 | #ifdef tc_canonicalize_symbol_name |
747 | { | |
748 | char *copy; | |
03987ced | 749 | size_t len = strlen (name) + 1; |
252b5132 | 750 | |
03987ced RH |
751 | copy = (char *) alloca (len); |
752 | memcpy (copy, name, len); | |
252b5132 RH |
753 | name = tc_canonicalize_symbol_name (copy); |
754 | } | |
755 | #endif | |
756 | ||
757 | if (! symbols_case_sensitive) | |
758 | { | |
03987ced RH |
759 | char *copy; |
760 | const char *orig; | |
761 | unsigned char c; | |
762 | ||
763 | orig = name; | |
764 | name = copy = (char *) alloca (strlen (name) + 1); | |
765 | ||
766 | while ((c = *orig++) != '\0') | |
767 | { | |
3882b010 | 768 | *copy++ = TOUPPER (c); |
03987ced RH |
769 | } |
770 | *copy = '\0'; | |
252b5132 RH |
771 | } |
772 | ||
06e77878 | 773 | return symbol_find_exact_noref (name, noref); |
252b5132 RH |
774 | } |
775 | ||
7c743825 KH |
776 | /* Once upon a time, symbols were kept in a singly linked list. At |
777 | least coff needs to be able to rearrange them from time to time, for | |
778 | which a doubly linked list is much more convenient. Loic did these | |
779 | as macros which seemed dangerous to me so they're now functions. | |
780 | xoxorich. */ | |
781 | ||
782 | /* Link symbol ADDME after symbol TARGET in the chain. */ | |
252b5132 | 783 | |
7c743825 | 784 | void |
74937d39 KH |
785 | symbol_append (symbolS *addme, symbolS *target, |
786 | symbolS **rootPP, symbolS **lastPP) | |
252b5132 | 787 | { |
49309057 ILT |
788 | if (LOCAL_SYMBOL_CHECK (addme)) |
789 | abort (); | |
790 | if (target != NULL && LOCAL_SYMBOL_CHECK (target)) | |
791 | abort (); | |
792 | ||
252b5132 RH |
793 | if (target == NULL) |
794 | { | |
795 | know (*rootPP == NULL); | |
796 | know (*lastPP == NULL); | |
797 | addme->sy_next = NULL; | |
252b5132 | 798 | addme->sy_previous = NULL; |
252b5132 RH |
799 | *rootPP = addme; |
800 | *lastPP = addme; | |
801 | return; | |
7c743825 | 802 | } /* if the list is empty */ |
252b5132 RH |
803 | |
804 | if (target->sy_next != NULL) | |
805 | { | |
252b5132 | 806 | target->sy_next->sy_previous = addme; |
252b5132 RH |
807 | } |
808 | else | |
809 | { | |
810 | know (*lastPP == target); | |
811 | *lastPP = addme; | |
7c743825 | 812 | } /* if we have a next */ |
252b5132 RH |
813 | |
814 | addme->sy_next = target->sy_next; | |
815 | target->sy_next = addme; | |
252b5132 | 816 | addme->sy_previous = target; |
252b5132 RH |
817 | |
818 | debug_verify_symchain (symbol_rootP, symbol_lastP); | |
819 | } | |
820 | ||
7c743825 KH |
821 | /* Set the chain pointers of SYMBOL to null. */ |
822 | ||
823 | void | |
74937d39 | 824 | symbol_clear_list_pointers (symbolS *symbolP) |
252b5132 | 825 | { |
49309057 ILT |
826 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
827 | abort (); | |
252b5132 | 828 | symbolP->sy_next = NULL; |
252b5132 | 829 | symbolP->sy_previous = NULL; |
252b5132 RH |
830 | } |
831 | ||
7c743825 KH |
832 | /* Remove SYMBOLP from the list. */ |
833 | ||
834 | void | |
74937d39 | 835 | symbol_remove (symbolS *symbolP, symbolS **rootPP, symbolS **lastPP) |
252b5132 | 836 | { |
49309057 ILT |
837 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
838 | abort (); | |
839 | ||
252b5132 RH |
840 | if (symbolP == *rootPP) |
841 | { | |
842 | *rootPP = symbolP->sy_next; | |
7c743825 | 843 | } /* if it was the root */ |
252b5132 RH |
844 | |
845 | if (symbolP == *lastPP) | |
846 | { | |
847 | *lastPP = symbolP->sy_previous; | |
7c743825 | 848 | } /* if it was the tail */ |
252b5132 RH |
849 | |
850 | if (symbolP->sy_next != NULL) | |
851 | { | |
852 | symbolP->sy_next->sy_previous = symbolP->sy_previous; | |
7c743825 | 853 | } /* if not last */ |
252b5132 RH |
854 | |
855 | if (symbolP->sy_previous != NULL) | |
856 | { | |
857 | symbolP->sy_previous->sy_next = symbolP->sy_next; | |
7c743825 | 858 | } /* if not first */ |
252b5132 RH |
859 | |
860 | debug_verify_symchain (*rootPP, *lastPP); | |
861 | } | |
862 | ||
7c743825 KH |
863 | /* Link symbol ADDME before symbol TARGET in the chain. */ |
864 | ||
865 | void | |
74937d39 KH |
866 | symbol_insert (symbolS *addme, symbolS *target, |
867 | symbolS **rootPP, symbolS **lastPP ATTRIBUTE_UNUSED) | |
252b5132 | 868 | { |
49309057 ILT |
869 | if (LOCAL_SYMBOL_CHECK (addme)) |
870 | abort (); | |
871 | if (LOCAL_SYMBOL_CHECK (target)) | |
872 | abort (); | |
873 | ||
252b5132 RH |
874 | if (target->sy_previous != NULL) |
875 | { | |
876 | target->sy_previous->sy_next = addme; | |
877 | } | |
878 | else | |
879 | { | |
880 | know (*rootPP == target); | |
881 | *rootPP = addme; | |
7c743825 | 882 | } /* if not first */ |
252b5132 RH |
883 | |
884 | addme->sy_previous = target->sy_previous; | |
885 | target->sy_previous = addme; | |
886 | addme->sy_next = target; | |
887 | ||
888 | debug_verify_symchain (*rootPP, *lastPP); | |
889 | } | |
890 | ||
7c743825 | 891 | void |
74937d39 | 892 | verify_symbol_chain (symbolS *rootP, symbolS *lastP) |
252b5132 RH |
893 | { |
894 | symbolS *symbolP = rootP; | |
895 | ||
896 | if (symbolP == NULL) | |
897 | return; | |
898 | ||
899 | for (; symbol_next (symbolP) != NULL; symbolP = symbol_next (symbolP)) | |
900 | { | |
9c2799c2 | 901 | gas_assert (symbolP->bsym != NULL); |
158184ac | 902 | gas_assert (symbolP->sy_flags.sy_local_symbol == 0); |
9c2799c2 | 903 | gas_assert (symbolP->sy_next->sy_previous == symbolP); |
252b5132 RH |
904 | } |
905 | ||
9c2799c2 | 906 | gas_assert (lastP == symbolP); |
252b5132 RH |
907 | } |
908 | ||
280d71bf DB |
909 | #ifdef OBJ_COMPLEX_RELC |
910 | ||
911 | static int | |
912 | use_complex_relocs_for (symbolS * symp) | |
913 | { | |
914 | switch (symp->sy_value.X_op) | |
915 | { | |
916 | case O_constant: | |
917 | return 0; | |
918 | ||
919 | case O_symbol: | |
920 | case O_symbol_rva: | |
921 | case O_uminus: | |
922 | case O_bit_not: | |
923 | case O_logical_not: | |
924 | if ( (S_IS_COMMON (symp->sy_value.X_add_symbol) | |
925 | || S_IS_LOCAL (symp->sy_value.X_add_symbol)) | |
926 | && | |
927 | (S_IS_DEFINED (symp->sy_value.X_add_symbol) | |
928 | && S_GET_SEGMENT (symp->sy_value.X_add_symbol) != expr_section)) | |
929 | return 0; | |
930 | break; | |
931 | ||
932 | case O_multiply: | |
933 | case O_divide: | |
934 | case O_modulus: | |
935 | case O_left_shift: | |
936 | case O_right_shift: | |
937 | case O_bit_inclusive_or: | |
938 | case O_bit_or_not: | |
939 | case O_bit_exclusive_or: | |
940 | case O_bit_and: | |
941 | case O_add: | |
942 | case O_subtract: | |
943 | case O_eq: | |
944 | case O_ne: | |
945 | case O_lt: | |
946 | case O_le: | |
947 | case O_ge: | |
948 | case O_gt: | |
949 | case O_logical_and: | |
950 | case O_logical_or: | |
951 | ||
952 | if ( (S_IS_COMMON (symp->sy_value.X_add_symbol) | |
953 | || S_IS_LOCAL (symp->sy_value.X_add_symbol)) | |
34bca508 | 954 | && |
280d71bf DB |
955 | (S_IS_COMMON (symp->sy_value.X_op_symbol) |
956 | || S_IS_LOCAL (symp->sy_value.X_op_symbol)) | |
957 | ||
958 | && S_IS_DEFINED (symp->sy_value.X_add_symbol) | |
959 | && S_IS_DEFINED (symp->sy_value.X_op_symbol) | |
960 | && S_GET_SEGMENT (symp->sy_value.X_add_symbol) != expr_section | |
961 | && S_GET_SEGMENT (symp->sy_value.X_op_symbol) != expr_section) | |
962 | return 0; | |
963 | break; | |
34bca508 | 964 | |
280d71bf DB |
965 | default: |
966 | break; | |
967 | } | |
968 | return 1; | |
969 | } | |
970 | #endif | |
971 | ||
0909233e | 972 | static void |
5a0ade8b | 973 | report_op_error (symbolS *symp, symbolS *left, operatorT op, symbolS *right) |
0909233e AM |
974 | { |
975 | char *file; | |
976 | unsigned int line; | |
5a0ade8b AM |
977 | segT seg_left = left ? S_GET_SEGMENT (left) : 0; |
978 | segT seg_right = S_GET_SEGMENT (right); | |
979 | const char *opname; | |
980 | ||
981 | switch (op) | |
982 | { | |
983 | default: | |
984 | abort (); | |
985 | return; | |
986 | ||
987 | case O_uminus: opname = "-"; break; | |
988 | case O_bit_not: opname = "~"; break; | |
989 | case O_logical_not: opname = "!"; break; | |
990 | case O_multiply: opname = "*"; break; | |
991 | case O_divide: opname = "/"; break; | |
992 | case O_modulus: opname = "%"; break; | |
993 | case O_left_shift: opname = "<<"; break; | |
994 | case O_right_shift: opname = ">>"; break; | |
995 | case O_bit_inclusive_or: opname = "|"; break; | |
996 | case O_bit_or_not: opname = "|~"; break; | |
997 | case O_bit_exclusive_or: opname = "^"; break; | |
998 | case O_bit_and: opname = "&"; break; | |
999 | case O_add: opname = "+"; break; | |
1000 | case O_subtract: opname = "-"; break; | |
1001 | case O_eq: opname = "=="; break; | |
1002 | case O_ne: opname = "!="; break; | |
1003 | case O_lt: opname = "<"; break; | |
1004 | case O_le: opname = "<="; break; | |
1005 | case O_ge: opname = ">="; break; | |
1006 | case O_gt: opname = ">"; break; | |
1007 | case O_logical_and: opname = "&&"; break; | |
1008 | case O_logical_or: opname = "||"; break; | |
1009 | } | |
1d3b2b27 | 1010 | |
0909233e AM |
1011 | if (expr_symbol_where (symp, &file, &line)) |
1012 | { | |
5a0ade8b | 1013 | if (left) |
0909233e | 1014 | as_bad_where (file, line, |
5a0ade8b AM |
1015 | _("invalid operands (%s and %s sections) for `%s'"), |
1016 | seg_left->name, seg_right->name, opname); | |
1017 | else | |
0909233e | 1018 | as_bad_where (file, line, |
5a0ade8b AM |
1019 | _("invalid operand (%s section) for `%s'"), |
1020 | seg_right->name, opname); | |
0909233e AM |
1021 | } |
1022 | else | |
1023 | { | |
5a0ade8b AM |
1024 | const char *sname = S_GET_NAME (symp); |
1025 | ||
1026 | if (left) | |
1027 | as_bad (_("invalid operands (%s and %s sections) for `%s' when setting `%s'"), | |
1028 | seg_left->name, seg_right->name, opname, sname); | |
1029 | else | |
1030 | as_bad (_("invalid operand (%s section) for `%s' when setting `%s'"), | |
1031 | seg_right->name, opname, sname); | |
0909233e AM |
1032 | } |
1033 | } | |
1034 | ||
252b5132 RH |
1035 | /* Resolve the value of a symbol. This is called during the final |
1036 | pass over the symbol table to resolve any symbols with complex | |
1037 | values. */ | |
1038 | ||
1039 | valueT | |
74937d39 | 1040 | resolve_symbol_value (symbolS *symp) |
252b5132 RH |
1041 | { |
1042 | int resolved; | |
03e83a45 | 1043 | valueT final_val = 0; |
252b5132 RH |
1044 | segT final_seg; |
1045 | ||
49309057 ILT |
1046 | if (LOCAL_SYMBOL_CHECK (symp)) |
1047 | { | |
1048 | struct local_symbol *locsym = (struct local_symbol *) symp; | |
1049 | ||
bd780143 | 1050 | final_val = locsym->lsy_value; |
49309057 | 1051 | if (local_symbol_resolved_p (locsym)) |
bd780143 | 1052 | return final_val; |
49309057 | 1053 | |
bd780143 | 1054 | final_val += local_symbol_get_frag (locsym)->fr_address / OCTETS_PER_BYTE; |
49309057 | 1055 | |
6386f3a7 | 1056 | if (finalize_syms) |
49309057 | 1057 | { |
bd780143 | 1058 | locsym->lsy_value = final_val; |
49309057 ILT |
1059 | local_symbol_mark_resolved (locsym); |
1060 | } | |
1061 | ||
1062 | return final_val; | |
1063 | } | |
1064 | ||
158184ac | 1065 | if (symp->sy_flags.sy_resolved) |
252b5132 RH |
1066 | { |
1067 | if (symp->sy_value.X_op == O_constant) | |
1068 | return (valueT) symp->sy_value.X_add_number; | |
1069 | else | |
1070 | return 0; | |
1071 | } | |
1072 | ||
1073 | resolved = 0; | |
1074 | final_seg = S_GET_SEGMENT (symp); | |
1075 | ||
158184ac | 1076 | if (symp->sy_flags.sy_resolving) |
252b5132 | 1077 | { |
6386f3a7 | 1078 | if (finalize_syms) |
0e389e77 | 1079 | as_bad (_("symbol definition loop encountered at `%s'"), |
7c743825 | 1080 | S_GET_NAME (symp)); |
252b5132 RH |
1081 | final_val = 0; |
1082 | resolved = 1; | |
1083 | } | |
280d71bf DB |
1084 | #ifdef OBJ_COMPLEX_RELC |
1085 | else if (final_seg == expr_section | |
1086 | && use_complex_relocs_for (symp)) | |
1087 | { | |
1088 | symbolS * relc_symbol = NULL; | |
1089 | char * relc_symbol_name = NULL; | |
1090 | ||
1091 | relc_symbol_name = symbol_relc_make_expr (& symp->sy_value); | |
1092 | ||
1093 | /* For debugging, print out conversion input & output. */ | |
1094 | #ifdef DEBUG_SYMS | |
1095 | print_expr (& symp->sy_value); | |
1096 | if (relc_symbol_name) | |
1097 | fprintf (stderr, "-> relc symbol: %s\n", relc_symbol_name); | |
1098 | #endif | |
1099 | ||
1100 | if (relc_symbol_name != NULL) | |
1101 | relc_symbol = symbol_new (relc_symbol_name, undefined_section, | |
1102 | 0, & zero_address_frag); | |
1103 | ||
1104 | if (relc_symbol == NULL) | |
1105 | { | |
1106 | as_bad (_("cannot convert expression symbol %s to complex relocation"), | |
1107 | S_GET_NAME (symp)); | |
1108 | resolved = 0; | |
1109 | } | |
1110 | else | |
1111 | { | |
1112 | symbol_table_insert (relc_symbol); | |
1113 | ||
1114 | /* S_CLEAR_EXTERNAL (relc_symbol); */ | |
1115 | if (symp->bsym->flags & BSF_SRELC) | |
1116 | relc_symbol->bsym->flags |= BSF_SRELC; | |
1117 | else | |
34bca508 | 1118 | relc_symbol->bsym->flags |= BSF_RELC; |
280d71bf DB |
1119 | /* symp->bsym->flags |= BSF_RELC; */ |
1120 | copy_symbol_attributes (symp, relc_symbol); | |
1121 | symp->sy_value.X_op = O_symbol; | |
1122 | symp->sy_value.X_add_symbol = relc_symbol; | |
1123 | symp->sy_value.X_add_number = 0; | |
1124 | resolved = 1; | |
1125 | } | |
1126 | ||
1127 | final_seg = undefined_section; | |
1128 | goto exit_dont_set_value; | |
1129 | } | |
1130 | #endif | |
252b5132 RH |
1131 | else |
1132 | { | |
1133 | symbolS *add_symbol, *op_symbol; | |
1134 | offsetT left, right; | |
1135 | segT seg_left, seg_right; | |
1136 | operatorT op; | |
2d034539 | 1137 | int move_seg_ok; |
252b5132 | 1138 | |
158184ac | 1139 | symp->sy_flags.sy_resolving = 1; |
252b5132 RH |
1140 | |
1141 | /* Help out with CSE. */ | |
1142 | add_symbol = symp->sy_value.X_add_symbol; | |
1143 | op_symbol = symp->sy_value.X_op_symbol; | |
1144 | final_val = symp->sy_value.X_add_number; | |
1145 | op = symp->sy_value.X_op; | |
1146 | ||
1147 | switch (op) | |
1148 | { | |
1149 | default: | |
1150 | BAD_CASE (op); | |
1151 | break; | |
1152 | ||
1153 | case O_absent: | |
1154 | final_val = 0; | |
1155 | /* Fall through. */ | |
1156 | ||
1157 | case O_constant: | |
bea9907b | 1158 | final_val += symp->sy_frag->fr_address / OCTETS_PER_BYTE; |
252b5132 RH |
1159 | if (final_seg == expr_section) |
1160 | final_seg = absolute_section; | |
db557034 AM |
1161 | /* Fall through. */ |
1162 | ||
1163 | case O_register: | |
252b5132 RH |
1164 | resolved = 1; |
1165 | break; | |
1166 | ||
1167 | case O_symbol: | |
1168 | case O_symbol_rva: | |
6386f3a7 | 1169 | left = resolve_symbol_value (add_symbol); |
e0890092 AM |
1170 | seg_left = S_GET_SEGMENT (add_symbol); |
1171 | if (finalize_syms) | |
1172 | symp->sy_value.X_op_symbol = NULL; | |
252b5132 | 1173 | |
e0890092 | 1174 | do_symbol: |
06e77878 AO |
1175 | if (S_IS_WEAKREFR (symp)) |
1176 | { | |
9c2799c2 | 1177 | gas_assert (final_val == 0); |
06e77878 AO |
1178 | if (S_IS_WEAKREFR (add_symbol)) |
1179 | { | |
9c2799c2 | 1180 | gas_assert (add_symbol->sy_value.X_op == O_symbol |
06e77878 AO |
1181 | && add_symbol->sy_value.X_add_number == 0); |
1182 | add_symbol = add_symbol->sy_value.X_add_symbol; | |
9c2799c2 | 1183 | gas_assert (! S_IS_WEAKREFR (add_symbol)); |
06e77878 AO |
1184 | symp->sy_value.X_add_symbol = add_symbol; |
1185 | } | |
1186 | } | |
1187 | ||
158184ac | 1188 | if (symp->sy_flags.sy_mri_common) |
252b5132 RH |
1189 | { |
1190 | /* This is a symbol inside an MRI common section. The | |
e0890092 AM |
1191 | relocation routines are going to handle it specially. |
1192 | Don't change the value. */ | |
49309057 | 1193 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1194 | break; |
1195 | } | |
1196 | ||
6386f3a7 | 1197 | if (finalize_syms && final_val == 0) |
49309057 ILT |
1198 | { |
1199 | if (LOCAL_SYMBOL_CHECK (add_symbol)) | |
1200 | add_symbol = local_symbol_convert ((struct local_symbol *) | |
1201 | add_symbol); | |
1202 | copy_symbol_attributes (symp, add_symbol); | |
1203 | } | |
252b5132 | 1204 | |
e0890092 AM |
1205 | /* If we have equated this symbol to an undefined or common |
1206 | symbol, keep X_op set to O_symbol, and don't change | |
1207 | X_add_number. This permits the routine which writes out | |
1208 | relocation to detect this case, and convert the | |
1209 | relocation to be against the symbol to which this symbol | |
1210 | is equated. */ | |
977cdf5a | 1211 | if (! S_IS_DEFINED (add_symbol) |
7be1c489 | 1212 | #if defined (OBJ_COFF) && defined (TE_PE) |
977cdf5a NC |
1213 | || S_IS_WEAK (add_symbol) |
1214 | #endif | |
1215 | || S_IS_COMMON (add_symbol)) | |
252b5132 | 1216 | { |
6386f3a7 | 1217 | if (finalize_syms) |
252b5132 | 1218 | { |
252b5132 RH |
1219 | symp->sy_value.X_op = O_symbol; |
1220 | symp->sy_value.X_add_symbol = add_symbol; | |
1221 | symp->sy_value.X_add_number = final_val; | |
e0890092 AM |
1222 | /* Use X_op_symbol as a flag. */ |
1223 | symp->sy_value.X_op_symbol = add_symbol; | |
252b5132 | 1224 | } |
5a0ade8b | 1225 | final_seg = seg_left; |
252b5132 | 1226 | final_val = 0; |
49309057 | 1227 | resolved = symbol_resolved_p (add_symbol); |
158184ac | 1228 | symp->sy_flags.sy_resolving = 0; |
252b5132 RH |
1229 | goto exit_dont_set_value; |
1230 | } | |
0023dd27 AM |
1231 | else if (finalize_syms |
1232 | && ((final_seg == expr_section && seg_left != expr_section) | |
1233 | || symbol_shadow_p (symp))) | |
e0890092 AM |
1234 | { |
1235 | /* If the symbol is an expression symbol, do similarly | |
1236 | as for undefined and common syms above. Handles | |
1237 | "sym +/- expr" where "expr" cannot be evaluated | |
1238 | immediately, and we want relocations to be against | |
1239 | "sym", eg. because it is weak. */ | |
1240 | symp->sy_value.X_op = O_symbol; | |
1241 | symp->sy_value.X_add_symbol = add_symbol; | |
1242 | symp->sy_value.X_add_number = final_val; | |
1243 | symp->sy_value.X_op_symbol = add_symbol; | |
1244 | final_seg = seg_left; | |
1245 | final_val += symp->sy_frag->fr_address + left; | |
1246 | resolved = symbol_resolved_p (add_symbol); | |
158184ac | 1247 | symp->sy_flags.sy_resolving = 0; |
e0890092 AM |
1248 | goto exit_dont_set_value; |
1249 | } | |
252b5132 RH |
1250 | else |
1251 | { | |
1252 | final_val += symp->sy_frag->fr_address + left; | |
1253 | if (final_seg == expr_section || final_seg == undefined_section) | |
e0890092 | 1254 | final_seg = seg_left; |
252b5132 RH |
1255 | } |
1256 | ||
49309057 | 1257 | resolved = symbol_resolved_p (add_symbol); |
06e77878 AO |
1258 | if (S_IS_WEAKREFR (symp)) |
1259 | goto exit_dont_set_value; | |
252b5132 RH |
1260 | break; |
1261 | ||
1262 | case O_uminus: | |
1263 | case O_bit_not: | |
1264 | case O_logical_not: | |
6386f3a7 | 1265 | left = resolve_symbol_value (add_symbol); |
784b640d | 1266 | seg_left = S_GET_SEGMENT (add_symbol); |
252b5132 | 1267 | |
0909233e AM |
1268 | /* By reducing these to the relevant dyadic operator, we get |
1269 | !S -> S == 0 permitted on anything, | |
1270 | -S -> 0 - S only permitted on absolute | |
1271 | ~S -> S ^ ~0 only permitted on absolute */ | |
1272 | if (op != O_logical_not && seg_left != absolute_section | |
1273 | && finalize_syms) | |
5a0ade8b | 1274 | report_op_error (symp, NULL, op, add_symbol); |
1d3b2b27 | 1275 | |
0909233e AM |
1276 | if (final_seg == expr_section || final_seg == undefined_section) |
1277 | final_seg = absolute_section; | |
1d3b2b27 | 1278 | |
252b5132 RH |
1279 | if (op == O_uminus) |
1280 | left = -left; | |
1281 | else if (op == O_logical_not) | |
1282 | left = !left; | |
1283 | else | |
1284 | left = ~left; | |
1285 | ||
1286 | final_val += left + symp->sy_frag->fr_address; | |
252b5132 | 1287 | |
49309057 | 1288 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1289 | break; |
1290 | ||
1291 | case O_multiply: | |
1292 | case O_divide: | |
1293 | case O_modulus: | |
1294 | case O_left_shift: | |
1295 | case O_right_shift: | |
1296 | case O_bit_inclusive_or: | |
1297 | case O_bit_or_not: | |
1298 | case O_bit_exclusive_or: | |
1299 | case O_bit_and: | |
1300 | case O_add: | |
1301 | case O_subtract: | |
1302 | case O_eq: | |
1303 | case O_ne: | |
1304 | case O_lt: | |
1305 | case O_le: | |
1306 | case O_ge: | |
1307 | case O_gt: | |
1308 | case O_logical_and: | |
1309 | case O_logical_or: | |
6386f3a7 AM |
1310 | left = resolve_symbol_value (add_symbol); |
1311 | right = resolve_symbol_value (op_symbol); | |
252b5132 RH |
1312 | seg_left = S_GET_SEGMENT (add_symbol); |
1313 | seg_right = S_GET_SEGMENT (op_symbol); | |
1314 | ||
1315 | /* Simplify addition or subtraction of a constant by folding the | |
1316 | constant into X_add_number. */ | |
e0890092 | 1317 | if (op == O_add) |
252b5132 RH |
1318 | { |
1319 | if (seg_right == absolute_section) | |
1320 | { | |
e0890092 | 1321 | final_val += right; |
252b5132 RH |
1322 | goto do_symbol; |
1323 | } | |
e0890092 | 1324 | else if (seg_left == absolute_section) |
252b5132 | 1325 | { |
252b5132 RH |
1326 | final_val += left; |
1327 | add_symbol = op_symbol; | |
1328 | left = right; | |
e0890092 AM |
1329 | seg_left = seg_right; |
1330 | goto do_symbol; | |
1331 | } | |
1332 | } | |
1333 | else if (op == O_subtract) | |
1334 | { | |
1335 | if (seg_right == absolute_section) | |
1336 | { | |
1337 | final_val -= right; | |
252b5132 RH |
1338 | goto do_symbol; |
1339 | } | |
1340 | } | |
1341 | ||
2d034539 | 1342 | move_seg_ok = 1; |
e0890092 AM |
1343 | /* Equality and non-equality tests are permitted on anything. |
1344 | Subtraction, and other comparison operators are permitted if | |
1345 | both operands are in the same section. Otherwise, both | |
1346 | operands must be absolute. We already handled the case of | |
1347 | addition or subtraction of a constant above. This will | |
1348 | probably need to be changed for an object file format which | |
2d034539 NC |
1349 | supports arbitrary expressions, such as IEEE-695. */ |
1350 | if (!(seg_left == absolute_section | |
5a0ade8b | 1351 | && seg_right == absolute_section) |
0909233e AM |
1352 | && !(op == O_eq || op == O_ne) |
1353 | && !((op == O_subtract | |
1354 | || op == O_lt || op == O_le || op == O_ge || op == O_gt) | |
1355 | && seg_left == seg_right | |
1356 | && (seg_left != undefined_section | |
1357 | || add_symbol == op_symbol))) | |
2d034539 NC |
1358 | { |
1359 | /* Don't emit messages unless we're finalizing the symbol value, | |
1360 | otherwise we may get the same message multiple times. */ | |
1361 | if (finalize_syms) | |
5a0ade8b | 1362 | report_op_error (symp, add_symbol, op, op_symbol); |
2d034539 NC |
1363 | /* However do not move the symbol into the absolute section |
1364 | if it cannot currently be resolved - this would confuse | |
1365 | other parts of the assembler into believing that the | |
1366 | expression had been evaluated to zero. */ | |
1367 | else | |
1368 | move_seg_ok = 0; | |
1369 | } | |
1d3b2b27 | 1370 | |
2d034539 NC |
1371 | if (move_seg_ok |
1372 | && (final_seg == expr_section || final_seg == undefined_section)) | |
0909233e | 1373 | final_seg = absolute_section; |
252b5132 RH |
1374 | |
1375 | /* Check for division by zero. */ | |
1376 | if ((op == O_divide || op == O_modulus) && right == 0) | |
1377 | { | |
1378 | /* If seg_right is not absolute_section, then we've | |
e0890092 | 1379 | already issued a warning about using a bad symbol. */ |
6386f3a7 | 1380 | if (seg_right == absolute_section && finalize_syms) |
252b5132 RH |
1381 | { |
1382 | char *file; | |
1383 | unsigned int line; | |
1384 | ||
1385 | if (expr_symbol_where (symp, &file, &line)) | |
1386 | as_bad_where (file, line, _("division by zero")); | |
1387 | else | |
0e389e77 | 1388 | as_bad (_("division by zero when setting `%s'"), |
252b5132 RH |
1389 | S_GET_NAME (symp)); |
1390 | } | |
1391 | ||
1392 | right = 1; | |
1393 | } | |
1394 | ||
1395 | switch (symp->sy_value.X_op) | |
1396 | { | |
1397 | case O_multiply: left *= right; break; | |
1398 | case O_divide: left /= right; break; | |
1399 | case O_modulus: left %= right; break; | |
1400 | case O_left_shift: left <<= right; break; | |
1401 | case O_right_shift: left >>= right; break; | |
1402 | case O_bit_inclusive_or: left |= right; break; | |
1403 | case O_bit_or_not: left |= ~right; break; | |
1404 | case O_bit_exclusive_or: left ^= right; break; | |
1405 | case O_bit_and: left &= right; break; | |
1406 | case O_add: left += right; break; | |
1407 | case O_subtract: left -= right; break; | |
e0890092 AM |
1408 | case O_eq: |
1409 | case O_ne: | |
1410 | left = (left == right && seg_left == seg_right | |
1411 | && (seg_left != undefined_section | |
1412 | || add_symbol == op_symbol) | |
1413 | ? ~ (offsetT) 0 : 0); | |
1414 | if (symp->sy_value.X_op == O_ne) | |
1415 | left = ~left; | |
1416 | break; | |
252b5132 RH |
1417 | case O_lt: left = left < right ? ~ (offsetT) 0 : 0; break; |
1418 | case O_le: left = left <= right ? ~ (offsetT) 0 : 0; break; | |
1419 | case O_ge: left = left >= right ? ~ (offsetT) 0 : 0; break; | |
1420 | case O_gt: left = left > right ? ~ (offsetT) 0 : 0; break; | |
1421 | case O_logical_and: left = left && right; break; | |
1422 | case O_logical_or: left = left || right; break; | |
1423 | default: abort (); | |
1424 | } | |
1425 | ||
1426 | final_val += symp->sy_frag->fr_address + left; | |
1427 | if (final_seg == expr_section || final_seg == undefined_section) | |
784b640d AM |
1428 | { |
1429 | if (seg_left == undefined_section | |
1430 | || seg_right == undefined_section) | |
1431 | final_seg = undefined_section; | |
1432 | else if (seg_left == absolute_section) | |
1433 | final_seg = seg_right; | |
1434 | else | |
1435 | final_seg = seg_left; | |
1436 | } | |
49309057 ILT |
1437 | resolved = (symbol_resolved_p (add_symbol) |
1438 | && symbol_resolved_p (op_symbol)); | |
7c743825 | 1439 | break; |
252b5132 | 1440 | |
252b5132 RH |
1441 | case O_big: |
1442 | case O_illegal: | |
1443 | /* Give an error (below) if not in expr_section. We don't | |
1444 | want to worry about expr_section symbols, because they | |
1445 | are fictional (they are created as part of expression | |
1446 | resolution), and any problems may not actually mean | |
1447 | anything. */ | |
1448 | break; | |
1449 | } | |
1450 | ||
158184ac | 1451 | symp->sy_flags.sy_resolving = 0; |
252b5132 RH |
1452 | } |
1453 | ||
6386f3a7 | 1454 | if (finalize_syms) |
05bdb37e | 1455 | S_SET_VALUE (symp, final_val); |
252b5132 | 1456 | |
05bdb37e AM |
1457 | exit_dont_set_value: |
1458 | /* Always set the segment, even if not finalizing the value. | |
1459 | The segment is used to determine whether a symbol is defined. */ | |
05bdb37e | 1460 | S_SET_SEGMENT (symp, final_seg); |
252b5132 | 1461 | |
252b5132 | 1462 | /* Don't worry if we can't resolve an expr_section symbol. */ |
6386f3a7 | 1463 | if (finalize_syms) |
252b5132 RH |
1464 | { |
1465 | if (resolved) | |
158184ac | 1466 | symp->sy_flags.sy_resolved = 1; |
252b5132 RH |
1467 | else if (S_GET_SEGMENT (symp) != expr_section) |
1468 | { | |
0e389e77 | 1469 | as_bad (_("can't resolve value for symbol `%s'"), |
7c743825 | 1470 | S_GET_NAME (symp)); |
158184ac | 1471 | symp->sy_flags.sy_resolved = 1; |
252b5132 RH |
1472 | } |
1473 | } | |
1474 | ||
1475 | return final_val; | |
1476 | } | |
1477 | ||
5a49b8ac | 1478 | static void resolve_local_symbol (const char *, void *); |
49309057 ILT |
1479 | |
1480 | /* A static function passed to hash_traverse. */ | |
1481 | ||
1482 | static void | |
5a49b8ac | 1483 | resolve_local_symbol (const char *key ATTRIBUTE_UNUSED, void *value) |
49309057 ILT |
1484 | { |
1485 | if (value != NULL) | |
1e9cc1c2 | 1486 | resolve_symbol_value ((symbolS *) value); |
49309057 ILT |
1487 | } |
1488 | ||
49309057 ILT |
1489 | /* Resolve all local symbols. */ |
1490 | ||
1491 | void | |
74937d39 | 1492 | resolve_local_symbol_values (void) |
49309057 | 1493 | { |
49309057 | 1494 | hash_traverse (local_hash, resolve_local_symbol); |
49309057 ILT |
1495 | } |
1496 | ||
9497f5ac NC |
1497 | /* Obtain the current value of a symbol without changing any |
1498 | sub-expressions used. */ | |
1499 | ||
1500 | int | |
2e1e12b1 | 1501 | snapshot_symbol (symbolS **symbolPP, valueT *valueP, segT *segP, fragS **fragPP) |
9497f5ac | 1502 | { |
2e1e12b1 JB |
1503 | symbolS *symbolP = *symbolPP; |
1504 | ||
9497f5ac NC |
1505 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
1506 | { | |
1507 | struct local_symbol *locsym = (struct local_symbol *) symbolP; | |
1508 | ||
1509 | *valueP = locsym->lsy_value; | |
1510 | *segP = locsym->lsy_section; | |
1511 | *fragPP = local_symbol_get_frag (locsym); | |
1512 | } | |
1513 | else | |
1514 | { | |
91d6fa6a | 1515 | expressionS exp = symbolP->sy_value; |
9497f5ac | 1516 | |
158184ac | 1517 | if (!symbolP->sy_flags.sy_resolved && exp.X_op != O_illegal) |
9497f5ac NC |
1518 | { |
1519 | int resolved; | |
1520 | ||
158184ac | 1521 | if (symbolP->sy_flags.sy_resolving) |
9497f5ac | 1522 | return 0; |
158184ac | 1523 | symbolP->sy_flags.sy_resolving = 1; |
91d6fa6a | 1524 | resolved = resolve_expression (&exp); |
158184ac | 1525 | symbolP->sy_flags.sy_resolving = 0; |
9497f5ac NC |
1526 | if (!resolved) |
1527 | return 0; | |
1528 | ||
91d6fa6a | 1529 | switch (exp.X_op) |
9497f5ac NC |
1530 | { |
1531 | case O_constant: | |
1532 | case O_register: | |
2e1e12b1 | 1533 | if (!symbol_equated_p (symbolP)) |
9497f5ac NC |
1534 | break; |
1535 | /* Fall thru. */ | |
1536 | case O_symbol: | |
1537 | case O_symbol_rva: | |
91d6fa6a | 1538 | symbolP = exp.X_add_symbol; |
9497f5ac NC |
1539 | break; |
1540 | default: | |
1541 | return 0; | |
1542 | } | |
1543 | } | |
1544 | ||
d96eea71 | 1545 | *symbolPP = symbolP; |
91d6fa6a | 1546 | *valueP = exp.X_add_number; |
9497f5ac NC |
1547 | *segP = symbolP->bsym->section; |
1548 | *fragPP = symbolP->sy_frag; | |
1549 | ||
1550 | if (*segP == expr_section) | |
91d6fa6a | 1551 | switch (exp.X_op) |
9497f5ac NC |
1552 | { |
1553 | case O_constant: *segP = absolute_section; break; | |
1554 | case O_register: *segP = reg_section; break; | |
1555 | default: break; | |
1556 | } | |
1557 | } | |
1558 | ||
1559 | return 1; | |
1560 | } | |
1561 | ||
252b5132 RH |
1562 | /* Dollar labels look like a number followed by a dollar sign. Eg, "42$". |
1563 | They are *really* local. That is, they go out of scope whenever we see a | |
1564 | label that isn't local. Also, like fb labels, there can be multiple | |
1565 | instances of a dollar label. Therefor, we name encode each instance with | |
1566 | the instance number, keep a list of defined symbols separate from the real | |
1567 | symbol table, and we treat these buggers as a sparse array. */ | |
1568 | ||
1569 | static long *dollar_labels; | |
1570 | static long *dollar_label_instances; | |
1571 | static char *dollar_label_defines; | |
1572 | static unsigned long dollar_label_count; | |
1573 | static unsigned long dollar_label_max; | |
1574 | ||
7c743825 | 1575 | int |
74937d39 | 1576 | dollar_label_defined (long label) |
252b5132 RH |
1577 | { |
1578 | long *i; | |
1579 | ||
1580 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1581 | ||
1582 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1583 | if (*i == label) | |
1584 | return dollar_label_defines[i - dollar_labels]; | |
1585 | ||
7c743825 | 1586 | /* If we get here, label isn't defined. */ |
252b5132 | 1587 | return 0; |
7c743825 | 1588 | } |
252b5132 RH |
1589 | |
1590 | static long | |
74937d39 | 1591 | dollar_label_instance (long label) |
252b5132 RH |
1592 | { |
1593 | long *i; | |
1594 | ||
1595 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1596 | ||
1597 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1598 | if (*i == label) | |
1599 | return (dollar_label_instances[i - dollar_labels]); | |
1600 | ||
7c743825 KH |
1601 | /* If we get here, we haven't seen the label before. |
1602 | Therefore its instance count is zero. */ | |
252b5132 RH |
1603 | return 0; |
1604 | } | |
1605 | ||
7c743825 | 1606 | void |
74937d39 | 1607 | dollar_label_clear (void) |
252b5132 RH |
1608 | { |
1609 | memset (dollar_label_defines, '\0', (unsigned int) dollar_label_count); | |
1610 | } | |
1611 | ||
1612 | #define DOLLAR_LABEL_BUMP_BY 10 | |
1613 | ||
7c743825 | 1614 | void |
74937d39 | 1615 | define_dollar_label (long label) |
252b5132 RH |
1616 | { |
1617 | long *i; | |
1618 | ||
1619 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1620 | if (*i == label) | |
1621 | { | |
1622 | ++dollar_label_instances[i - dollar_labels]; | |
1623 | dollar_label_defines[i - dollar_labels] = 1; | |
1624 | return; | |
1625 | } | |
1626 | ||
7c743825 | 1627 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1628 | |
1629 | if (dollar_labels == NULL) | |
1630 | { | |
1631 | dollar_labels = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long)); | |
1632 | dollar_label_instances = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long)); | |
1e9cc1c2 | 1633 | dollar_label_defines = (char *) xmalloc (DOLLAR_LABEL_BUMP_BY); |
252b5132 RH |
1634 | dollar_label_max = DOLLAR_LABEL_BUMP_BY; |
1635 | dollar_label_count = 0; | |
1636 | } | |
1637 | else if (dollar_label_count == dollar_label_max) | |
1638 | { | |
1639 | dollar_label_max += DOLLAR_LABEL_BUMP_BY; | |
1640 | dollar_labels = (long *) xrealloc ((char *) dollar_labels, | |
1641 | dollar_label_max * sizeof (long)); | |
1642 | dollar_label_instances = (long *) xrealloc ((char *) dollar_label_instances, | |
1643 | dollar_label_max * sizeof (long)); | |
1e9cc1c2 | 1644 | dollar_label_defines = (char *) xrealloc (dollar_label_defines, dollar_label_max); |
7c743825 | 1645 | } /* if we needed to grow */ |
252b5132 RH |
1646 | |
1647 | dollar_labels[dollar_label_count] = label; | |
1648 | dollar_label_instances[dollar_label_count] = 1; | |
1649 | dollar_label_defines[dollar_label_count] = 1; | |
1650 | ++dollar_label_count; | |
1651 | } | |
1652 | ||
7c743825 KH |
1653 | /* Caller must copy returned name: we re-use the area for the next name. |
1654 | ||
1655 | The mth occurence of label n: is turned into the symbol "Ln^Am" | |
1656 | where n is the label number and m is the instance number. "L" makes | |
1657 | it a label discarded unless debugging and "^A"('\1') ensures no | |
1658 | ordinary symbol SHOULD get the same name as a local label | |
1659 | symbol. The first "4:" is "L4^A1" - the m numbers begin at 1. | |
1660 | ||
1661 | fb labels get the same treatment, except that ^B is used in place | |
1662 | of ^A. */ | |
1663 | ||
1664 | char * /* Return local label name. */ | |
74937d39 KH |
1665 | dollar_label_name (register long n, /* we just saw "n$:" : n a number. */ |
1666 | register int augend /* 0 for current instance, 1 for new instance. */) | |
252b5132 RH |
1667 | { |
1668 | long i; | |
7c743825 | 1669 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 RH |
1670 | static char symbol_name_build[24]; |
1671 | register char *p; | |
1672 | register char *q; | |
7c743825 | 1673 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1674 | |
1675 | know (n >= 0); | |
1676 | know (augend == 0 || augend == 1); | |
1677 | p = symbol_name_build; | |
f84dd1f0 NC |
1678 | #ifdef LOCAL_LABEL_PREFIX |
1679 | *p++ = LOCAL_LABEL_PREFIX; | |
1680 | #endif | |
252b5132 RH |
1681 | *p++ = 'L'; |
1682 | ||
7c743825 KH |
1683 | /* Next code just does sprintf( {}, "%d", n); */ |
1684 | /* Label number. */ | |
252b5132 RH |
1685 | q = symbol_name_temporary; |
1686 | for (*q++ = 0, i = n; i; ++q) | |
1687 | { | |
1688 | *q = i % 10 + '0'; | |
1689 | i /= 10; | |
1690 | } | |
1691 | while ((*p = *--q) != '\0') | |
1692 | ++p; | |
1693 | ||
aa257fcd | 1694 | *p++ = DOLLAR_LABEL_CHAR; /* ^A */ |
252b5132 | 1695 | |
7c743825 | 1696 | /* Instance number. */ |
252b5132 RH |
1697 | q = symbol_name_temporary; |
1698 | for (*q++ = 0, i = dollar_label_instance (n) + augend; i; ++q) | |
1699 | { | |
1700 | *q = i % 10 + '0'; | |
1701 | i /= 10; | |
1702 | } | |
5bb3703f | 1703 | while ((*p++ = *--q) != '\0'); |
252b5132 | 1704 | |
7c743825 | 1705 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 RH |
1706 | return symbol_name_build; |
1707 | } | |
1708 | ||
47eebc20 | 1709 | /* Somebody else's idea of local labels. They are made by "n:" where n |
7c743825 KH |
1710 | is any decimal digit. Refer to them with |
1711 | "nb" for previous (backward) n: | |
1712 | or "nf" for next (forward) n:. | |
1713 | ||
1714 | We do a little better and let n be any number, not just a single digit, but | |
1715 | since the other guy's assembler only does ten, we treat the first ten | |
1716 | specially. | |
1717 | ||
1718 | Like someone else's assembler, we have one set of local label counters for | |
1719 | entire assembly, not one set per (sub)segment like in most assemblers. This | |
1720 | implies that one can refer to a label in another segment, and indeed some | |
1721 | crufty compilers have done just that. | |
1722 | ||
1723 | Since there could be a LOT of these things, treat them as a sparse | |
1724 | array. */ | |
252b5132 RH |
1725 | |
1726 | #define FB_LABEL_SPECIAL (10) | |
1727 | ||
1728 | static long fb_low_counter[FB_LABEL_SPECIAL]; | |
1729 | static long *fb_labels; | |
1730 | static long *fb_label_instances; | |
1731 | static long fb_label_count; | |
1732 | static long fb_label_max; | |
1733 | ||
7c743825 | 1734 | /* This must be more than FB_LABEL_SPECIAL. */ |
252b5132 RH |
1735 | #define FB_LABEL_BUMP_BY (FB_LABEL_SPECIAL + 6) |
1736 | ||
7c743825 | 1737 | static void |
74937d39 | 1738 | fb_label_init (void) |
252b5132 RH |
1739 | { |
1740 | memset ((void *) fb_low_counter, '\0', sizeof (fb_low_counter)); | |
7c743825 | 1741 | } |
252b5132 | 1742 | |
7c743825 KH |
1743 | /* Add one to the instance number of this fb label. */ |
1744 | ||
1745 | void | |
74937d39 | 1746 | fb_label_instance_inc (long label) |
252b5132 RH |
1747 | { |
1748 | long *i; | |
1749 | ||
b4e6cb80 | 1750 | if ((unsigned long) label < FB_LABEL_SPECIAL) |
252b5132 RH |
1751 | { |
1752 | ++fb_low_counter[label]; | |
1753 | return; | |
1754 | } | |
1755 | ||
1756 | if (fb_labels != NULL) | |
1757 | { | |
1758 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1759 | i < fb_labels + fb_label_count; ++i) | |
1760 | { | |
1761 | if (*i == label) | |
1762 | { | |
1763 | ++fb_label_instances[i - fb_labels]; | |
1764 | return; | |
7c743825 KH |
1765 | } /* if we find it */ |
1766 | } /* for each existing label */ | |
252b5132 RH |
1767 | } |
1768 | ||
7c743825 | 1769 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1770 | |
1771 | if (fb_labels == NULL) | |
1772 | { | |
1773 | fb_labels = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long)); | |
1774 | fb_label_instances = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long)); | |
1775 | fb_label_max = FB_LABEL_BUMP_BY; | |
1776 | fb_label_count = FB_LABEL_SPECIAL; | |
1777 | ||
1778 | } | |
1779 | else if (fb_label_count == fb_label_max) | |
1780 | { | |
1781 | fb_label_max += FB_LABEL_BUMP_BY; | |
1782 | fb_labels = (long *) xrealloc ((char *) fb_labels, | |
1783 | fb_label_max * sizeof (long)); | |
1784 | fb_label_instances = (long *) xrealloc ((char *) fb_label_instances, | |
1785 | fb_label_max * sizeof (long)); | |
7c743825 | 1786 | } /* if we needed to grow */ |
252b5132 RH |
1787 | |
1788 | fb_labels[fb_label_count] = label; | |
1789 | fb_label_instances[fb_label_count] = 1; | |
1790 | ++fb_label_count; | |
1791 | } | |
1792 | ||
7c743825 | 1793 | static long |
74937d39 | 1794 | fb_label_instance (long label) |
252b5132 RH |
1795 | { |
1796 | long *i; | |
1797 | ||
b4e6cb80 | 1798 | if ((unsigned long) label < FB_LABEL_SPECIAL) |
252b5132 RH |
1799 | { |
1800 | return (fb_low_counter[label]); | |
1801 | } | |
1802 | ||
1803 | if (fb_labels != NULL) | |
1804 | { | |
1805 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1806 | i < fb_labels + fb_label_count; ++i) | |
1807 | { | |
1808 | if (*i == label) | |
1809 | { | |
1810 | return (fb_label_instances[i - fb_labels]); | |
7c743825 KH |
1811 | } /* if we find it */ |
1812 | } /* for each existing label */ | |
252b5132 RH |
1813 | } |
1814 | ||
1815 | /* We didn't find the label, so this must be a reference to the | |
1816 | first instance. */ | |
1817 | return 0; | |
1818 | } | |
1819 | ||
7c743825 KH |
1820 | /* Caller must copy returned name: we re-use the area for the next name. |
1821 | ||
1822 | The mth occurence of label n: is turned into the symbol "Ln^Bm" | |
1823 | where n is the label number and m is the instance number. "L" makes | |
1824 | it a label discarded unless debugging and "^B"('\2') ensures no | |
1825 | ordinary symbol SHOULD get the same name as a local label | |
1826 | symbol. The first "4:" is "L4^B1" - the m numbers begin at 1. | |
1827 | ||
1828 | dollar labels get the same treatment, except that ^A is used in | |
1829 | place of ^B. */ | |
1830 | ||
1831 | char * /* Return local label name. */ | |
74937d39 KH |
1832 | fb_label_name (long n, /* We just saw "n:", "nf" or "nb" : n a number. */ |
1833 | long augend /* 0 for nb, 1 for n:, nf. */) | |
252b5132 RH |
1834 | { |
1835 | long i; | |
7c743825 | 1836 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 RH |
1837 | static char symbol_name_build[24]; |
1838 | register char *p; | |
1839 | register char *q; | |
7c743825 | 1840 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1841 | |
1842 | know (n >= 0); | |
a76903bf | 1843 | #ifdef TC_MMIX |
71ba24a1 | 1844 | know ((unsigned long) augend <= 2 /* See mmix_fb_label. */); |
a76903bf | 1845 | #else |
71ba24a1 | 1846 | know ((unsigned long) augend <= 1); |
a76903bf | 1847 | #endif |
252b5132 | 1848 | p = symbol_name_build; |
aa257fcd NC |
1849 | #ifdef LOCAL_LABEL_PREFIX |
1850 | *p++ = LOCAL_LABEL_PREFIX; | |
1851 | #endif | |
252b5132 RH |
1852 | *p++ = 'L'; |
1853 | ||
7c743825 KH |
1854 | /* Next code just does sprintf( {}, "%d", n); */ |
1855 | /* Label number. */ | |
252b5132 RH |
1856 | q = symbol_name_temporary; |
1857 | for (*q++ = 0, i = n; i; ++q) | |
1858 | { | |
1859 | *q = i % 10 + '0'; | |
1860 | i /= 10; | |
1861 | } | |
1862 | while ((*p = *--q) != '\0') | |
1863 | ++p; | |
1864 | ||
aa257fcd | 1865 | *p++ = LOCAL_LABEL_CHAR; /* ^B */ |
252b5132 | 1866 | |
7c743825 | 1867 | /* Instance number. */ |
252b5132 RH |
1868 | q = symbol_name_temporary; |
1869 | for (*q++ = 0, i = fb_label_instance (n) + augend; i; ++q) | |
1870 | { | |
1871 | *q = i % 10 + '0'; | |
1872 | i /= 10; | |
1873 | } | |
5bb3703f | 1874 | while ((*p++ = *--q) != '\0'); |
252b5132 | 1875 | |
7c743825 | 1876 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 | 1877 | return (symbol_name_build); |
7c743825 | 1878 | } |
252b5132 | 1879 | |
7c743825 KH |
1880 | /* Decode name that may have been generated by foo_label_name() above. |
1881 | If the name wasn't generated by foo_label_name(), then return it | |
1882 | unaltered. This is used for error messages. */ | |
252b5132 RH |
1883 | |
1884 | char * | |
74937d39 | 1885 | decode_local_label_name (char *s) |
252b5132 RH |
1886 | { |
1887 | char *p; | |
1888 | char *symbol_decode; | |
1889 | int label_number; | |
1890 | int instance_number; | |
1891 | char *type; | |
d95767bf | 1892 | const char *message_format; |
91d6fa6a | 1893 | int lindex = 0; |
43ad3147 | 1894 | |
aa257fcd | 1895 | #ifdef LOCAL_LABEL_PREFIX |
91d6fa6a NC |
1896 | if (s[lindex] == LOCAL_LABEL_PREFIX) |
1897 | ++lindex; | |
aa257fcd | 1898 | #endif |
43ad3147 | 1899 | |
91d6fa6a | 1900 | if (s[lindex] != 'L') |
252b5132 RH |
1901 | return s; |
1902 | ||
91d6fa6a | 1903 | for (label_number = 0, p = s + lindex + 1; ISDIGIT (*p); ++p) |
252b5132 RH |
1904 | label_number = (10 * label_number) + *p - '0'; |
1905 | ||
aa257fcd | 1906 | if (*p == DOLLAR_LABEL_CHAR) |
252b5132 | 1907 | type = "dollar"; |
aa257fcd | 1908 | else if (*p == LOCAL_LABEL_CHAR) |
252b5132 RH |
1909 | type = "fb"; |
1910 | else | |
1911 | return s; | |
1912 | ||
3882b010 | 1913 | for (instance_number = 0, p++; ISDIGIT (*p); ++p) |
252b5132 RH |
1914 | instance_number = (10 * instance_number) + *p - '0'; |
1915 | ||
d95767bf | 1916 | message_format = _("\"%d\" (instance number %d of a %s label)"); |
1e9cc1c2 | 1917 | symbol_decode = (char *) obstack_alloc (¬es, strlen (message_format) + 30); |
252b5132 RH |
1918 | sprintf (symbol_decode, message_format, label_number, instance_number, type); |
1919 | ||
1920 | return symbol_decode; | |
1921 | } | |
1922 | ||
1923 | /* Get the value of a symbol. */ | |
1924 | ||
1925 | valueT | |
74937d39 | 1926 | S_GET_VALUE (symbolS *s) |
252b5132 | 1927 | { |
49309057 | 1928 | if (LOCAL_SYMBOL_CHECK (s)) |
ac62c346 | 1929 | return resolve_symbol_value (s); |
49309057 | 1930 | |
158184ac | 1931 | if (!s->sy_flags.sy_resolved) |
e46d99eb | 1932 | { |
6386f3a7 AM |
1933 | valueT val = resolve_symbol_value (s); |
1934 | if (!finalize_syms) | |
e46d99eb AM |
1935 | return val; |
1936 | } | |
06e77878 AO |
1937 | if (S_IS_WEAKREFR (s)) |
1938 | return S_GET_VALUE (s->sy_value.X_add_symbol); | |
1939 | ||
252b5132 RH |
1940 | if (s->sy_value.X_op != O_constant) |
1941 | { | |
158184ac | 1942 | if (! s->sy_flags.sy_resolved |
252b5132 RH |
1943 | || s->sy_value.X_op != O_symbol |
1944 | || (S_IS_DEFINED (s) && ! S_IS_COMMON (s))) | |
0e389e77 | 1945 | as_bad (_("attempt to get value of unresolved symbol `%s'"), |
252b5132 | 1946 | S_GET_NAME (s)); |
252b5132 RH |
1947 | } |
1948 | return (valueT) s->sy_value.X_add_number; | |
1949 | } | |
1950 | ||
1951 | /* Set the value of a symbol. */ | |
1952 | ||
1953 | void | |
74937d39 | 1954 | S_SET_VALUE (symbolS *s, valueT val) |
252b5132 | 1955 | { |
49309057 ILT |
1956 | if (LOCAL_SYMBOL_CHECK (s)) |
1957 | { | |
bd780143 | 1958 | ((struct local_symbol *) s)->lsy_value = val; |
49309057 ILT |
1959 | return; |
1960 | } | |
1961 | ||
252b5132 RH |
1962 | s->sy_value.X_op = O_constant; |
1963 | s->sy_value.X_add_number = (offsetT) val; | |
1964 | s->sy_value.X_unsigned = 0; | |
06e77878 | 1965 | S_CLEAR_WEAKREFR (s); |
252b5132 RH |
1966 | } |
1967 | ||
1968 | void | |
74937d39 | 1969 | copy_symbol_attributes (symbolS *dest, symbolS *src) |
252b5132 | 1970 | { |
49309057 | 1971 | if (LOCAL_SYMBOL_CHECK (dest)) |
7f2f689c | 1972 | dest = local_symbol_convert ((struct local_symbol *) dest); |
49309057 | 1973 | if (LOCAL_SYMBOL_CHECK (src)) |
7f2f689c | 1974 | src = local_symbol_convert ((struct local_symbol *) src); |
49309057 | 1975 | |
252b5132 RH |
1976 | /* In an expression, transfer the settings of these flags. |
1977 | The user can override later, of course. */ | |
ad04f5ce L |
1978 | #define COPIED_SYMFLAGS (BSF_FUNCTION | BSF_OBJECT \ |
1979 | | BSF_GNU_INDIRECT_FUNCTION) | |
252b5132 | 1980 | dest->bsym->flags |= src->bsym->flags & COPIED_SYMFLAGS; |
252b5132 RH |
1981 | |
1982 | #ifdef OBJ_COPY_SYMBOL_ATTRIBUTES | |
1983 | OBJ_COPY_SYMBOL_ATTRIBUTES (dest, src); | |
1984 | #endif | |
794ba86a DJ |
1985 | |
1986 | #ifdef TC_COPY_SYMBOL_ATTRIBUTES | |
1987 | TC_COPY_SYMBOL_ATTRIBUTES (dest, src); | |
1988 | #endif | |
252b5132 RH |
1989 | } |
1990 | ||
252b5132 | 1991 | int |
74937d39 | 1992 | S_IS_FUNCTION (symbolS *s) |
252b5132 | 1993 | { |
49309057 ILT |
1994 | flagword flags; |
1995 | ||
1996 | if (LOCAL_SYMBOL_CHECK (s)) | |
1997 | return 0; | |
1998 | ||
1999 | flags = s->bsym->flags; | |
252b5132 RH |
2000 | |
2001 | return (flags & BSF_FUNCTION) != 0; | |
2002 | } | |
2003 | ||
2004 | int | |
74937d39 | 2005 | S_IS_EXTERNAL (symbolS *s) |
252b5132 | 2006 | { |
49309057 ILT |
2007 | flagword flags; |
2008 | ||
2009 | if (LOCAL_SYMBOL_CHECK (s)) | |
2010 | return 0; | |
2011 | ||
2012 | flags = s->bsym->flags; | |
252b5132 | 2013 | |
7c743825 | 2014 | /* Sanity check. */ |
252b5132 RH |
2015 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
2016 | abort (); | |
2017 | ||
2018 | return (flags & BSF_GLOBAL) != 0; | |
2019 | } | |
2020 | ||
2021 | int | |
74937d39 | 2022 | S_IS_WEAK (symbolS *s) |
252b5132 | 2023 | { |
49309057 ILT |
2024 | if (LOCAL_SYMBOL_CHECK (s)) |
2025 | return 0; | |
06e77878 AO |
2026 | /* Conceptually, a weakrefr is weak if the referenced symbol is. We |
2027 | could probably handle a WEAKREFR as always weak though. E.g., if | |
2028 | the referenced symbol has lost its weak status, there's no reason | |
2029 | to keep handling the weakrefr as if it was weak. */ | |
2030 | if (S_IS_WEAKREFR (s)) | |
2031 | return S_IS_WEAK (s->sy_value.X_add_symbol); | |
252b5132 RH |
2032 | return (s->bsym->flags & BSF_WEAK) != 0; |
2033 | } | |
2034 | ||
06e77878 AO |
2035 | int |
2036 | S_IS_WEAKREFR (symbolS *s) | |
2037 | { | |
2038 | if (LOCAL_SYMBOL_CHECK (s)) | |
2039 | return 0; | |
158184ac | 2040 | return s->sy_flags.sy_weakrefr != 0; |
06e77878 AO |
2041 | } |
2042 | ||
2043 | int | |
2044 | S_IS_WEAKREFD (symbolS *s) | |
2045 | { | |
2046 | if (LOCAL_SYMBOL_CHECK (s)) | |
2047 | return 0; | |
158184ac | 2048 | return s->sy_flags.sy_weakrefd != 0; |
06e77878 AO |
2049 | } |
2050 | ||
252b5132 | 2051 | int |
74937d39 | 2052 | S_IS_COMMON (symbolS *s) |
252b5132 | 2053 | { |
49309057 ILT |
2054 | if (LOCAL_SYMBOL_CHECK (s)) |
2055 | return 0; | |
252b5132 RH |
2056 | return bfd_is_com_section (s->bsym->section); |
2057 | } | |
2058 | ||
2059 | int | |
74937d39 | 2060 | S_IS_DEFINED (symbolS *s) |
252b5132 | 2061 | { |
49309057 ILT |
2062 | if (LOCAL_SYMBOL_CHECK (s)) |
2063 | return ((struct local_symbol *) s)->lsy_section != undefined_section; | |
252b5132 RH |
2064 | return s->bsym->section != undefined_section; |
2065 | } | |
2066 | ||
a161fe53 AM |
2067 | |
2068 | #ifndef EXTERN_FORCE_RELOC | |
2069 | #define EXTERN_FORCE_RELOC IS_ELF | |
2070 | #endif | |
2071 | ||
2072 | /* Return true for symbols that should not be reduced to section | |
2073 | symbols or eliminated from expressions, because they may be | |
2074 | overridden by the linker. */ | |
2075 | int | |
74937d39 | 2076 | S_FORCE_RELOC (symbolS *s, int strict) |
a161fe53 AM |
2077 | { |
2078 | if (LOCAL_SYMBOL_CHECK (s)) | |
2079 | return ((struct local_symbol *) s)->lsy_section == undefined_section; | |
2080 | ||
ae6063d4 AM |
2081 | return ((strict |
2082 | && ((s->bsym->flags & BSF_WEAK) != 0 | |
2083 | || (EXTERN_FORCE_RELOC | |
2084 | && (s->bsym->flags & BSF_GLOBAL) != 0))) | |
c969da64 | 2085 | || (s->bsym->flags & BSF_GNU_INDIRECT_FUNCTION) != 0 |
a161fe53 AM |
2086 | || s->bsym->section == undefined_section |
2087 | || bfd_is_com_section (s->bsym->section)); | |
2088 | } | |
2089 | ||
252b5132 | 2090 | int |
74937d39 | 2091 | S_IS_DEBUG (symbolS *s) |
252b5132 | 2092 | { |
49309057 ILT |
2093 | if (LOCAL_SYMBOL_CHECK (s)) |
2094 | return 0; | |
252b5132 RH |
2095 | if (s->bsym->flags & BSF_DEBUGGING) |
2096 | return 1; | |
2097 | return 0; | |
2098 | } | |
2099 | ||
2100 | int | |
74937d39 | 2101 | S_IS_LOCAL (symbolS *s) |
252b5132 | 2102 | { |
49309057 | 2103 | flagword flags; |
252b5132 RH |
2104 | const char *name; |
2105 | ||
49309057 ILT |
2106 | if (LOCAL_SYMBOL_CHECK (s)) |
2107 | return 1; | |
2108 | ||
2109 | flags = s->bsym->flags; | |
2110 | ||
7c743825 | 2111 | /* Sanity check. */ |
252b5132 RH |
2112 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
2113 | abort (); | |
2114 | ||
2115 | if (bfd_get_section (s->bsym) == reg_section) | |
2116 | return 1; | |
2117 | ||
2118 | if (flag_strip_local_absolute | |
bb82af9f NC |
2119 | /* Keep BSF_FILE symbols in order to allow debuggers to identify |
2120 | the source file even when the object file is stripped. */ | |
2121 | && (flags & (BSF_GLOBAL | BSF_FILE)) == 0 | |
252b5132 RH |
2122 | && bfd_get_section (s->bsym) == absolute_section) |
2123 | return 1; | |
2124 | ||
2125 | name = S_GET_NAME (s); | |
2126 | return (name != NULL | |
2127 | && ! S_IS_DEBUG (s) | |
aa257fcd NC |
2128 | && (strchr (name, DOLLAR_LABEL_CHAR) |
2129 | || strchr (name, LOCAL_LABEL_CHAR) | |
df58fc94 | 2130 | || TC_LABEL_IS_LOCAL (name) |
252b5132 RH |
2131 | || (! flag_keep_locals |
2132 | && (bfd_is_local_label (stdoutput, s->bsym) | |
2133 | || (flag_mri | |
2134 | && name[0] == '?' | |
2135 | && name[1] == '?'))))); | |
2136 | } | |
2137 | ||
252b5132 | 2138 | int |
74937d39 | 2139 | S_IS_STABD (symbolS *s) |
252b5132 RH |
2140 | { |
2141 | return S_GET_NAME (s) == 0; | |
2142 | } | |
2143 | ||
6885131b AM |
2144 | int |
2145 | S_CAN_BE_REDEFINED (const symbolS *s) | |
2146 | { | |
2147 | if (LOCAL_SYMBOL_CHECK (s)) | |
2148 | return (local_symbol_get_frag ((struct local_symbol *) s) | |
2149 | == &predefined_address_frag); | |
2150 | /* Permit register names to be redefined. */ | |
2151 | return s->bsym->section == reg_section; | |
2152 | } | |
2153 | ||
9497f5ac NC |
2154 | int |
2155 | S_IS_VOLATILE (const symbolS *s) | |
2156 | { | |
2157 | if (LOCAL_SYMBOL_CHECK (s)) | |
2158 | return 0; | |
158184ac | 2159 | return s->sy_flags.sy_volatile; |
9497f5ac NC |
2160 | } |
2161 | ||
2162 | int | |
2163 | S_IS_FORWARD_REF (const symbolS *s) | |
2164 | { | |
2165 | if (LOCAL_SYMBOL_CHECK (s)) | |
2166 | return 0; | |
158184ac | 2167 | return s->sy_flags.sy_forward_ref; |
9497f5ac NC |
2168 | } |
2169 | ||
9758f3fc | 2170 | const char * |
74937d39 | 2171 | S_GET_NAME (symbolS *s) |
252b5132 | 2172 | { |
49309057 ILT |
2173 | if (LOCAL_SYMBOL_CHECK (s)) |
2174 | return ((struct local_symbol *) s)->lsy_name; | |
252b5132 RH |
2175 | return s->bsym->name; |
2176 | } | |
2177 | ||
2178 | segT | |
74937d39 | 2179 | S_GET_SEGMENT (symbolS *s) |
252b5132 | 2180 | { |
49309057 ILT |
2181 | if (LOCAL_SYMBOL_CHECK (s)) |
2182 | return ((struct local_symbol *) s)->lsy_section; | |
252b5132 RH |
2183 | return s->bsym->section; |
2184 | } | |
2185 | ||
2186 | void | |
74937d39 | 2187 | S_SET_SEGMENT (symbolS *s, segT seg) |
252b5132 RH |
2188 | { |
2189 | /* Don't reassign section symbols. The direct reason is to prevent seg | |
2190 | faults assigning back to const global symbols such as *ABS*, but it | |
2191 | shouldn't happen anyway. */ | |
2192 | ||
49309057 ILT |
2193 | if (LOCAL_SYMBOL_CHECK (s)) |
2194 | { | |
2195 | if (seg == reg_section) | |
2196 | s = local_symbol_convert ((struct local_symbol *) s); | |
2197 | else | |
2198 | { | |
2199 | ((struct local_symbol *) s)->lsy_section = seg; | |
2200 | return; | |
2201 | } | |
2202 | } | |
2203 | ||
252b5132 RH |
2204 | if (s->bsym->flags & BSF_SECTION_SYM) |
2205 | { | |
2206 | if (s->bsym->section != seg) | |
7c743825 | 2207 | abort (); |
252b5132 RH |
2208 | } |
2209 | else | |
2210 | s->bsym->section = seg; | |
2211 | } | |
2212 | ||
2213 | void | |
74937d39 | 2214 | S_SET_EXTERNAL (symbolS *s) |
252b5132 | 2215 | { |
49309057 ILT |
2216 | if (LOCAL_SYMBOL_CHECK (s)) |
2217 | s = local_symbol_convert ((struct local_symbol *) s); | |
252b5132 RH |
2218 | if ((s->bsym->flags & BSF_WEAK) != 0) |
2219 | { | |
2220 | /* Let .weak override .global. */ | |
2221 | return; | |
2222 | } | |
4d7c34bf NC |
2223 | if (s->bsym->flags & BSF_SECTION_SYM) |
2224 | { | |
2225 | char * file; | |
2226 | unsigned int line; | |
d1a6c242 | 2227 | |
4d7c34bf NC |
2228 | /* Do not reassign section symbols. */ |
2229 | as_where (& file, & line); | |
2230 | as_warn_where (file, line, | |
0e389e77 | 2231 | _("section symbols are already global")); |
4d7c34bf NC |
2232 | return; |
2233 | } | |
97c4f2d9 | 2234 | #ifndef TC_GLOBAL_REGISTER_SYMBOL_OK |
d0548f34 L |
2235 | if (S_GET_SEGMENT (s) == reg_section) |
2236 | { | |
2237 | as_bad ("can't make register symbol `%s' global", | |
2238 | S_GET_NAME (s)); | |
2239 | return; | |
2240 | } | |
97c4f2d9 | 2241 | #endif |
252b5132 | 2242 | s->bsym->flags |= BSF_GLOBAL; |
7c743825 | 2243 | s->bsym->flags &= ~(BSF_LOCAL | BSF_WEAK); |
977cdf5a | 2244 | |
22ba0981 | 2245 | #ifdef TE_PE |
977cdf5a NC |
2246 | if (! an_external_name && S_GET_NAME(s)[0] != '.') |
2247 | an_external_name = S_GET_NAME (s); | |
2248 | #endif | |
252b5132 RH |
2249 | } |
2250 | ||
2251 | void | |
74937d39 | 2252 | S_CLEAR_EXTERNAL (symbolS *s) |
252b5132 | 2253 | { |
49309057 ILT |
2254 | if (LOCAL_SYMBOL_CHECK (s)) |
2255 | return; | |
252b5132 RH |
2256 | if ((s->bsym->flags & BSF_WEAK) != 0) |
2257 | { | |
2258 | /* Let .weak override. */ | |
2259 | return; | |
2260 | } | |
2261 | s->bsym->flags |= BSF_LOCAL; | |
7c743825 | 2262 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_WEAK); |
252b5132 RH |
2263 | } |
2264 | ||
2265 | void | |
74937d39 | 2266 | S_SET_WEAK (symbolS *s) |
252b5132 | 2267 | { |
49309057 ILT |
2268 | if (LOCAL_SYMBOL_CHECK (s)) |
2269 | s = local_symbol_convert ((struct local_symbol *) s); | |
06e77878 AO |
2270 | #ifdef obj_set_weak_hook |
2271 | obj_set_weak_hook (s); | |
2272 | #endif | |
252b5132 | 2273 | s->bsym->flags |= BSF_WEAK; |
7c743825 | 2274 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_LOCAL); |
252b5132 RH |
2275 | } |
2276 | ||
06e77878 AO |
2277 | void |
2278 | S_SET_WEAKREFR (symbolS *s) | |
2279 | { | |
2280 | if (LOCAL_SYMBOL_CHECK (s)) | |
2281 | s = local_symbol_convert ((struct local_symbol *) s); | |
158184ac | 2282 | s->sy_flags.sy_weakrefr = 1; |
06e77878 AO |
2283 | /* If the alias was already used, make sure we mark the target as |
2284 | used as well, otherwise it might be dropped from the symbol | |
2285 | table. This may have unintended side effects if the alias is | |
2286 | later redirected to another symbol, such as keeping the unused | |
2287 | previous target in the symbol table. Since it will be weak, it's | |
2288 | not a big deal. */ | |
158184ac | 2289 | if (s->sy_flags.sy_used) |
06e77878 AO |
2290 | symbol_mark_used (s->sy_value.X_add_symbol); |
2291 | } | |
2292 | ||
2293 | void | |
2294 | S_CLEAR_WEAKREFR (symbolS *s) | |
2295 | { | |
2296 | if (LOCAL_SYMBOL_CHECK (s)) | |
2297 | return; | |
158184ac | 2298 | s->sy_flags.sy_weakrefr = 0; |
06e77878 AO |
2299 | } |
2300 | ||
2301 | void | |
2302 | S_SET_WEAKREFD (symbolS *s) | |
2303 | { | |
2304 | if (LOCAL_SYMBOL_CHECK (s)) | |
2305 | s = local_symbol_convert ((struct local_symbol *) s); | |
158184ac | 2306 | s->sy_flags.sy_weakrefd = 1; |
06e77878 AO |
2307 | S_SET_WEAK (s); |
2308 | } | |
2309 | ||
2310 | void | |
2311 | S_CLEAR_WEAKREFD (symbolS *s) | |
2312 | { | |
2313 | if (LOCAL_SYMBOL_CHECK (s)) | |
2314 | return; | |
158184ac | 2315 | if (s->sy_flags.sy_weakrefd) |
06e77878 | 2316 | { |
158184ac | 2317 | s->sy_flags.sy_weakrefd = 0; |
06e77878 AO |
2318 | /* If a weakref target symbol is weak, then it was never |
2319 | referenced directly before, not even in a .global directive, | |
2320 | so decay it to local. If it remains undefined, it will be | |
2321 | later turned into a global, like any other undefined | |
2322 | symbol. */ | |
2323 | if (s->bsym->flags & BSF_WEAK) | |
2324 | { | |
2325 | #ifdef obj_clear_weak_hook | |
2326 | obj_clear_weak_hook (s); | |
2327 | #endif | |
2328 | s->bsym->flags &= ~BSF_WEAK; | |
2329 | s->bsym->flags |= BSF_LOCAL; | |
2330 | } | |
2331 | } | |
2332 | } | |
2333 | ||
00f7efb6 | 2334 | void |
74937d39 | 2335 | S_SET_THREAD_LOCAL (symbolS *s) |
00f7efb6 JJ |
2336 | { |
2337 | if (LOCAL_SYMBOL_CHECK (s)) | |
2338 | s = local_symbol_convert ((struct local_symbol *) s); | |
2339 | if (bfd_is_com_section (s->bsym->section) | |
2340 | && (s->bsym->flags & BSF_THREAD_LOCAL) != 0) | |
2341 | return; | |
2342 | s->bsym->flags |= BSF_THREAD_LOCAL; | |
2343 | if ((s->bsym->flags & BSF_FUNCTION) != 0) | |
2344 | as_bad (_("Accessing function `%s' as thread-local object"), | |
2345 | S_GET_NAME (s)); | |
2346 | else if (! bfd_is_und_section (s->bsym->section) | |
2347 | && (s->bsym->section->flags & SEC_THREAD_LOCAL) == 0) | |
2348 | as_bad (_("Accessing `%s' as thread-local object"), | |
2349 | S_GET_NAME (s)); | |
2350 | } | |
2351 | ||
252b5132 | 2352 | void |
977cdf5a | 2353 | S_SET_NAME (symbolS *s, const char *name) |
252b5132 | 2354 | { |
49309057 ILT |
2355 | if (LOCAL_SYMBOL_CHECK (s)) |
2356 | { | |
2357 | ((struct local_symbol *) s)->lsy_name = name; | |
2358 | return; | |
2359 | } | |
252b5132 RH |
2360 | s->bsym->name = name; |
2361 | } | |
49309057 | 2362 | |
9497f5ac NC |
2363 | void |
2364 | S_SET_VOLATILE (symbolS *s) | |
2365 | { | |
2366 | if (LOCAL_SYMBOL_CHECK (s)) | |
2367 | s = local_symbol_convert ((struct local_symbol *) s); | |
158184ac | 2368 | s->sy_flags.sy_volatile = 1; |
9497f5ac NC |
2369 | } |
2370 | ||
92757bc9 JB |
2371 | void |
2372 | S_CLEAR_VOLATILE (symbolS *s) | |
2373 | { | |
2374 | if (!LOCAL_SYMBOL_CHECK (s)) | |
158184ac | 2375 | s->sy_flags.sy_volatile = 0; |
92757bc9 JB |
2376 | } |
2377 | ||
9497f5ac NC |
2378 | void |
2379 | S_SET_FORWARD_REF (symbolS *s) | |
2380 | { | |
2381 | if (LOCAL_SYMBOL_CHECK (s)) | |
2382 | s = local_symbol_convert ((struct local_symbol *) s); | |
158184ac | 2383 | s->sy_flags.sy_forward_ref = 1; |
9497f5ac NC |
2384 | } |
2385 | ||
49309057 ILT |
2386 | /* Return the previous symbol in a chain. */ |
2387 | ||
2388 | symbolS * | |
74937d39 | 2389 | symbol_previous (symbolS *s) |
49309057 ILT |
2390 | { |
2391 | if (LOCAL_SYMBOL_CHECK (s)) | |
2392 | abort (); | |
2393 | return s->sy_previous; | |
2394 | } | |
2395 | ||
49309057 ILT |
2396 | /* Return the next symbol in a chain. */ |
2397 | ||
2398 | symbolS * | |
74937d39 | 2399 | symbol_next (symbolS *s) |
49309057 ILT |
2400 | { |
2401 | if (LOCAL_SYMBOL_CHECK (s)) | |
2402 | abort (); | |
2403 | return s->sy_next; | |
2404 | } | |
2405 | ||
2406 | /* Return a pointer to the value of a symbol as an expression. */ | |
2407 | ||
2408 | expressionS * | |
74937d39 | 2409 | symbol_get_value_expression (symbolS *s) |
49309057 ILT |
2410 | { |
2411 | if (LOCAL_SYMBOL_CHECK (s)) | |
2412 | s = local_symbol_convert ((struct local_symbol *) s); | |
2413 | return &s->sy_value; | |
2414 | } | |
2415 | ||
2416 | /* Set the value of a symbol to an expression. */ | |
2417 | ||
2418 | void | |
74937d39 | 2419 | symbol_set_value_expression (symbolS *s, const expressionS *exp) |
49309057 ILT |
2420 | { |
2421 | if (LOCAL_SYMBOL_CHECK (s)) | |
2422 | s = local_symbol_convert ((struct local_symbol *) s); | |
2423 | s->sy_value = *exp; | |
06e77878 | 2424 | S_CLEAR_WEAKREFR (s); |
49309057 ILT |
2425 | } |
2426 | ||
087d837e L |
2427 | /* Return whether 2 symbols are the same. */ |
2428 | ||
2429 | int | |
2430 | symbol_same_p (symbolS *s1, symbolS *s2) | |
2431 | { | |
158184ac | 2432 | if (s1->sy_flags.sy_local_symbol |
087d837e L |
2433 | && local_symbol_converted_p ((struct local_symbol *) s1)) |
2434 | s1 = local_symbol_get_real_symbol ((struct local_symbol *) s1); | |
158184ac | 2435 | if (s2->sy_flags.sy_local_symbol |
087d837e L |
2436 | && local_symbol_converted_p ((struct local_symbol *) s2)) |
2437 | s2 = local_symbol_get_real_symbol ((struct local_symbol *) s2); | |
2438 | return s1 == s2; | |
2439 | } | |
2440 | ||
be95a9c1 AM |
2441 | /* Return a pointer to the X_add_number component of a symbol. */ |
2442 | ||
514d955d | 2443 | offsetT * |
be95a9c1 AM |
2444 | symbol_X_add_number (symbolS *s) |
2445 | { | |
be95a9c1 | 2446 | if (LOCAL_SYMBOL_CHECK (s)) |
514d955d | 2447 | return (offsetT *) &((struct local_symbol *) s)->lsy_value; |
be95a9c1 | 2448 | |
514d955d | 2449 | return &s->sy_value.X_add_number; |
be95a9c1 AM |
2450 | } |
2451 | ||
b7d6ed97 RH |
2452 | /* Set the value of SYM to the current position in the current segment. */ |
2453 | ||
2454 | void | |
74937d39 | 2455 | symbol_set_value_now (symbolS *sym) |
b7d6ed97 RH |
2456 | { |
2457 | S_SET_SEGMENT (sym, now_seg); | |
2458 | S_SET_VALUE (sym, frag_now_fix ()); | |
2459 | symbol_set_frag (sym, frag_now); | |
2460 | } | |
2461 | ||
49309057 ILT |
2462 | /* Set the frag of a symbol. */ |
2463 | ||
2464 | void | |
74937d39 | 2465 | symbol_set_frag (symbolS *s, fragS *f) |
49309057 ILT |
2466 | { |
2467 | if (LOCAL_SYMBOL_CHECK (s)) | |
2468 | { | |
2469 | local_symbol_set_frag ((struct local_symbol *) s, f); | |
2470 | return; | |
2471 | } | |
2472 | s->sy_frag = f; | |
06e77878 | 2473 | S_CLEAR_WEAKREFR (s); |
49309057 ILT |
2474 | } |
2475 | ||
2476 | /* Return the frag of a symbol. */ | |
2477 | ||
2478 | fragS * | |
74937d39 | 2479 | symbol_get_frag (symbolS *s) |
49309057 ILT |
2480 | { |
2481 | if (LOCAL_SYMBOL_CHECK (s)) | |
2482 | return local_symbol_get_frag ((struct local_symbol *) s); | |
2483 | return s->sy_frag; | |
2484 | } | |
2485 | ||
2486 | /* Mark a symbol as having been used. */ | |
2487 | ||
2488 | void | |
74937d39 | 2489 | symbol_mark_used (symbolS *s) |
49309057 ILT |
2490 | { |
2491 | if (LOCAL_SYMBOL_CHECK (s)) | |
2492 | return; | |
158184ac | 2493 | s->sy_flags.sy_used = 1; |
06e77878 AO |
2494 | if (S_IS_WEAKREFR (s)) |
2495 | symbol_mark_used (s->sy_value.X_add_symbol); | |
49309057 ILT |
2496 | } |
2497 | ||
2498 | /* Clear the mark of whether a symbol has been used. */ | |
2499 | ||
2500 | void | |
74937d39 | 2501 | symbol_clear_used (symbolS *s) |
49309057 ILT |
2502 | { |
2503 | if (LOCAL_SYMBOL_CHECK (s)) | |
2504 | s = local_symbol_convert ((struct local_symbol *) s); | |
158184ac | 2505 | s->sy_flags.sy_used = 0; |
49309057 ILT |
2506 | } |
2507 | ||
2508 | /* Return whether a symbol has been used. */ | |
2509 | ||
2510 | int | |
74937d39 | 2511 | symbol_used_p (symbolS *s) |
49309057 ILT |
2512 | { |
2513 | if (LOCAL_SYMBOL_CHECK (s)) | |
2514 | return 1; | |
158184ac | 2515 | return s->sy_flags.sy_used; |
49309057 ILT |
2516 | } |
2517 | ||
2518 | /* Mark a symbol as having been used in a reloc. */ | |
2519 | ||
2520 | void | |
74937d39 | 2521 | symbol_mark_used_in_reloc (symbolS *s) |
49309057 ILT |
2522 | { |
2523 | if (LOCAL_SYMBOL_CHECK (s)) | |
2524 | s = local_symbol_convert ((struct local_symbol *) s); | |
158184ac | 2525 | s->sy_flags.sy_used_in_reloc = 1; |
49309057 ILT |
2526 | } |
2527 | ||
2528 | /* Clear the mark of whether a symbol has been used in a reloc. */ | |
2529 | ||
2530 | void | |
74937d39 | 2531 | symbol_clear_used_in_reloc (symbolS *s) |
49309057 ILT |
2532 | { |
2533 | if (LOCAL_SYMBOL_CHECK (s)) | |
2534 | return; | |
158184ac | 2535 | s->sy_flags.sy_used_in_reloc = 0; |
49309057 ILT |
2536 | } |
2537 | ||
2538 | /* Return whether a symbol has been used in a reloc. */ | |
2539 | ||
2540 | int | |
74937d39 | 2541 | symbol_used_in_reloc_p (symbolS *s) |
49309057 ILT |
2542 | { |
2543 | if (LOCAL_SYMBOL_CHECK (s)) | |
2544 | return 0; | |
158184ac | 2545 | return s->sy_flags.sy_used_in_reloc; |
49309057 ILT |
2546 | } |
2547 | ||
2548 | /* Mark a symbol as an MRI common symbol. */ | |
2549 | ||
2550 | void | |
74937d39 | 2551 | symbol_mark_mri_common (symbolS *s) |
49309057 ILT |
2552 | { |
2553 | if (LOCAL_SYMBOL_CHECK (s)) | |
2554 | s = local_symbol_convert ((struct local_symbol *) s); | |
158184ac | 2555 | s->sy_flags.sy_mri_common = 1; |
49309057 ILT |
2556 | } |
2557 | ||
2558 | /* Clear the mark of whether a symbol is an MRI common symbol. */ | |
2559 | ||
2560 | void | |
74937d39 | 2561 | symbol_clear_mri_common (symbolS *s) |
49309057 ILT |
2562 | { |
2563 | if (LOCAL_SYMBOL_CHECK (s)) | |
2564 | return; | |
158184ac | 2565 | s->sy_flags.sy_mri_common = 0; |
49309057 ILT |
2566 | } |
2567 | ||
2568 | /* Return whether a symbol is an MRI common symbol. */ | |
2569 | ||
2570 | int | |
74937d39 | 2571 | symbol_mri_common_p (symbolS *s) |
49309057 ILT |
2572 | { |
2573 | if (LOCAL_SYMBOL_CHECK (s)) | |
2574 | return 0; | |
158184ac | 2575 | return s->sy_flags.sy_mri_common; |
49309057 ILT |
2576 | } |
2577 | ||
2578 | /* Mark a symbol as having been written. */ | |
2579 | ||
2580 | void | |
74937d39 | 2581 | symbol_mark_written (symbolS *s) |
49309057 ILT |
2582 | { |
2583 | if (LOCAL_SYMBOL_CHECK (s)) | |
2584 | return; | |
158184ac | 2585 | s->sy_flags.sy_written = 1; |
49309057 ILT |
2586 | } |
2587 | ||
2588 | /* Clear the mark of whether a symbol has been written. */ | |
2589 | ||
2590 | void | |
74937d39 | 2591 | symbol_clear_written (symbolS *s) |
49309057 ILT |
2592 | { |
2593 | if (LOCAL_SYMBOL_CHECK (s)) | |
2594 | return; | |
158184ac | 2595 | s->sy_flags.sy_written = 0; |
49309057 ILT |
2596 | } |
2597 | ||
2598 | /* Return whether a symbol has been written. */ | |
2599 | ||
2600 | int | |
74937d39 | 2601 | symbol_written_p (symbolS *s) |
49309057 ILT |
2602 | { |
2603 | if (LOCAL_SYMBOL_CHECK (s)) | |
2604 | return 0; | |
158184ac | 2605 | return s->sy_flags.sy_written; |
49309057 ILT |
2606 | } |
2607 | ||
2608 | /* Mark a symbol has having been resolved. */ | |
2609 | ||
2610 | void | |
74937d39 | 2611 | symbol_mark_resolved (symbolS *s) |
49309057 ILT |
2612 | { |
2613 | if (LOCAL_SYMBOL_CHECK (s)) | |
2614 | { | |
2615 | local_symbol_mark_resolved ((struct local_symbol *) s); | |
2616 | return; | |
2617 | } | |
158184ac | 2618 | s->sy_flags.sy_resolved = 1; |
49309057 ILT |
2619 | } |
2620 | ||
2621 | /* Return whether a symbol has been resolved. */ | |
2622 | ||
2623 | int | |
74937d39 | 2624 | symbol_resolved_p (symbolS *s) |
49309057 ILT |
2625 | { |
2626 | if (LOCAL_SYMBOL_CHECK (s)) | |
2627 | return local_symbol_resolved_p ((struct local_symbol *) s); | |
158184ac | 2628 | return s->sy_flags.sy_resolved; |
49309057 ILT |
2629 | } |
2630 | ||
2631 | /* Return whether a symbol is a section symbol. */ | |
2632 | ||
2633 | int | |
74937d39 | 2634 | symbol_section_p (symbolS *s ATTRIBUTE_UNUSED) |
49309057 ILT |
2635 | { |
2636 | if (LOCAL_SYMBOL_CHECK (s)) | |
2637 | return 0; | |
49309057 | 2638 | return (s->bsym->flags & BSF_SECTION_SYM) != 0; |
49309057 ILT |
2639 | } |
2640 | ||
2641 | /* Return whether a symbol is equated to another symbol. */ | |
2642 | ||
2643 | int | |
74937d39 | 2644 | symbol_equated_p (symbolS *s) |
49309057 ILT |
2645 | { |
2646 | if (LOCAL_SYMBOL_CHECK (s)) | |
2647 | return 0; | |
2648 | return s->sy_value.X_op == O_symbol; | |
2649 | } | |
2650 | ||
e0890092 AM |
2651 | /* Return whether a symbol is equated to another symbol, and should be |
2652 | treated specially when writing out relocs. */ | |
2653 | ||
2654 | int | |
74937d39 | 2655 | symbol_equated_reloc_p (symbolS *s) |
e0890092 AM |
2656 | { |
2657 | if (LOCAL_SYMBOL_CHECK (s)) | |
2658 | return 0; | |
2659 | /* X_op_symbol, normally not used for O_symbol, is set by | |
2660 | resolve_symbol_value to flag expression syms that have been | |
2661 | equated. */ | |
2662 | return (s->sy_value.X_op == O_symbol | |
7be1c489 | 2663 | #if defined (OBJ_COFF) && defined (TE_PE) |
977cdf5a NC |
2664 | && ! S_IS_WEAK (s) |
2665 | #endif | |
158184ac | 2666 | && ((s->sy_flags.sy_resolved && s->sy_value.X_op_symbol != NULL) |
e0890092 AM |
2667 | || ! S_IS_DEFINED (s) |
2668 | || S_IS_COMMON (s))); | |
2669 | } | |
2670 | ||
49309057 ILT |
2671 | /* Return whether a symbol has a constant value. */ |
2672 | ||
2673 | int | |
74937d39 | 2674 | symbol_constant_p (symbolS *s) |
49309057 ILT |
2675 | { |
2676 | if (LOCAL_SYMBOL_CHECK (s)) | |
2677 | return 1; | |
2678 | return s->sy_value.X_op == O_constant; | |
2679 | } | |
2680 | ||
bdf128d6 JB |
2681 | /* Return whether a symbol was cloned and thus removed from the global |
2682 | symbol list. */ | |
2683 | ||
2684 | int | |
2685 | symbol_shadow_p (symbolS *s) | |
2686 | { | |
2687 | if (LOCAL_SYMBOL_CHECK (s)) | |
2688 | return 0; | |
2689 | return s->sy_next == s; | |
2690 | } | |
2691 | ||
49309057 ILT |
2692 | /* Return the BFD symbol for a symbol. */ |
2693 | ||
2694 | asymbol * | |
74937d39 | 2695 | symbol_get_bfdsym (symbolS *s) |
49309057 ILT |
2696 | { |
2697 | if (LOCAL_SYMBOL_CHECK (s)) | |
2698 | s = local_symbol_convert ((struct local_symbol *) s); | |
2699 | return s->bsym; | |
2700 | } | |
2701 | ||
2702 | /* Set the BFD symbol for a symbol. */ | |
2703 | ||
2704 | void | |
74937d39 | 2705 | symbol_set_bfdsym (symbolS *s, asymbol *bsym) |
49309057 ILT |
2706 | { |
2707 | if (LOCAL_SYMBOL_CHECK (s)) | |
2708 | s = local_symbol_convert ((struct local_symbol *) s); | |
22fe14ad NC |
2709 | /* Usually, it is harmless to reset a symbol to a BFD section |
2710 | symbol. For example, obj_elf_change_section sets the BFD symbol | |
2711 | of an old symbol with the newly created section symbol. But when | |
2712 | we have multiple sections with the same name, the newly created | |
2713 | section may have the same name as an old section. We check if the | |
2714 | old symbol has been already marked as a section symbol before | |
2715 | resetting it. */ | |
2716 | if ((s->bsym->flags & BSF_SECTION_SYM) == 0) | |
2717 | s->bsym = bsym; | |
2718 | /* else XXX - What do we do now ? */ | |
49309057 ILT |
2719 | } |
2720 | ||
49309057 ILT |
2721 | #ifdef OBJ_SYMFIELD_TYPE |
2722 | ||
2723 | /* Get a pointer to the object format information for a symbol. */ | |
2724 | ||
2725 | OBJ_SYMFIELD_TYPE * | |
74937d39 | 2726 | symbol_get_obj (symbolS *s) |
49309057 ILT |
2727 | { |
2728 | if (LOCAL_SYMBOL_CHECK (s)) | |
2729 | s = local_symbol_convert ((struct local_symbol *) s); | |
2730 | return &s->sy_obj; | |
2731 | } | |
2732 | ||
2733 | /* Set the object format information for a symbol. */ | |
2734 | ||
2735 | void | |
74937d39 | 2736 | symbol_set_obj (symbolS *s, OBJ_SYMFIELD_TYPE *o) |
49309057 ILT |
2737 | { |
2738 | if (LOCAL_SYMBOL_CHECK (s)) | |
2739 | s = local_symbol_convert ((struct local_symbol *) s); | |
2740 | s->sy_obj = *o; | |
2741 | } | |
2742 | ||
2743 | #endif /* OBJ_SYMFIELD_TYPE */ | |
2744 | ||
2745 | #ifdef TC_SYMFIELD_TYPE | |
2746 | ||
2747 | /* Get a pointer to the processor information for a symbol. */ | |
2748 | ||
2749 | TC_SYMFIELD_TYPE * | |
74937d39 | 2750 | symbol_get_tc (symbolS *s) |
49309057 ILT |
2751 | { |
2752 | if (LOCAL_SYMBOL_CHECK (s)) | |
2753 | s = local_symbol_convert ((struct local_symbol *) s); | |
2754 | return &s->sy_tc; | |
2755 | } | |
2756 | ||
2757 | /* Set the processor information for a symbol. */ | |
2758 | ||
2759 | void | |
74937d39 | 2760 | symbol_set_tc (symbolS *s, TC_SYMFIELD_TYPE *o) |
49309057 ILT |
2761 | { |
2762 | if (LOCAL_SYMBOL_CHECK (s)) | |
2763 | s = local_symbol_convert ((struct local_symbol *) s); | |
2764 | s->sy_tc = *o; | |
2765 | } | |
2766 | ||
2767 | #endif /* TC_SYMFIELD_TYPE */ | |
2768 | ||
252b5132 | 2769 | void |
74937d39 | 2770 | symbol_begin (void) |
252b5132 RH |
2771 | { |
2772 | symbol_lastP = NULL; | |
7c743825 | 2773 | symbol_rootP = NULL; /* In case we have 0 symbols (!!) */ |
252b5132 | 2774 | sy_hash = hash_new (); |
49309057 | 2775 | local_hash = hash_new (); |
252b5132 RH |
2776 | |
2777 | memset ((char *) (&abs_symbol), '\0', sizeof (abs_symbol)); | |
252b5132 | 2778 | #if defined (EMIT_SECTION_SYMBOLS) || !defined (RELOC_REQUIRES_SYMBOL) |
45dfa85a | 2779 | abs_symbol.bsym = bfd_abs_section_ptr->symbol; |
252b5132 RH |
2780 | #endif |
2781 | abs_symbol.sy_value.X_op = O_constant; | |
2782 | abs_symbol.sy_frag = &zero_address_frag; | |
2783 | ||
2784 | if (LOCAL_LABELS_FB) | |
2785 | fb_label_init (); | |
2786 | } | |
4a826962 MR |
2787 | |
2788 | void | |
2789 | dot_symbol_init (void) | |
2790 | { | |
2791 | dot_symbol.bsym = bfd_make_empty_symbol (stdoutput); | |
2792 | if (dot_symbol.bsym == NULL) | |
2793 | as_fatal ("bfd_make_empty_symbol: %s", bfd_errmsg (bfd_get_error ())); | |
2794 | dot_symbol.bsym->name = "."; | |
158184ac | 2795 | dot_symbol.sy_flags.sy_forward_ref = 1; |
4a826962 MR |
2796 | dot_symbol.sy_value.X_op = O_constant; |
2797 | } | |
252b5132 RH |
2798 | \f |
2799 | int indent_level; | |
2800 | ||
2801 | /* Maximum indent level. | |
2802 | Available for modification inside a gdb session. */ | |
87c245cc | 2803 | static int max_indent_level = 8; |
252b5132 | 2804 | |
252b5132 | 2805 | void |
74937d39 | 2806 | print_symbol_value_1 (FILE *file, symbolS *sym) |
252b5132 RH |
2807 | { |
2808 | const char *name = S_GET_NAME (sym); | |
2809 | if (!name || !name[0]) | |
2810 | name = "(unnamed)"; | |
d2df793a NC |
2811 | fprintf (file, "sym "); |
2812 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) sym)); | |
2813 | fprintf (file, " %s", name); | |
49309057 ILT |
2814 | |
2815 | if (LOCAL_SYMBOL_CHECK (sym)) | |
2816 | { | |
2817 | struct local_symbol *locsym = (struct local_symbol *) sym; | |
d2df793a NC |
2818 | |
2819 | if (local_symbol_get_frag (locsym) != & zero_address_frag | |
49309057 | 2820 | && local_symbol_get_frag (locsym) != NULL) |
d2df793a NC |
2821 | { |
2822 | fprintf (file, " frag "); | |
2823 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) local_symbol_get_frag (locsym))); | |
2824 | } | |
49309057 ILT |
2825 | if (local_symbol_resolved_p (locsym)) |
2826 | fprintf (file, " resolved"); | |
2827 | fprintf (file, " local"); | |
2828 | } | |
2829 | else | |
2830 | { | |
2831 | if (sym->sy_frag != &zero_address_frag) | |
d2df793a NC |
2832 | { |
2833 | fprintf (file, " frag "); | |
2834 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) sym->sy_frag)); | |
2835 | } | |
158184ac | 2836 | if (sym->sy_flags.sy_written) |
49309057 | 2837 | fprintf (file, " written"); |
158184ac | 2838 | if (sym->sy_flags.sy_resolved) |
49309057 | 2839 | fprintf (file, " resolved"); |
158184ac | 2840 | else if (sym->sy_flags.sy_resolving) |
49309057 | 2841 | fprintf (file, " resolving"); |
158184ac | 2842 | if (sym->sy_flags.sy_used_in_reloc) |
49309057 | 2843 | fprintf (file, " used-in-reloc"); |
158184ac | 2844 | if (sym->sy_flags.sy_used) |
49309057 ILT |
2845 | fprintf (file, " used"); |
2846 | if (S_IS_LOCAL (sym)) | |
2847 | fprintf (file, " local"); | |
e97b3f28 | 2848 | if (S_IS_EXTERNAL (sym)) |
49309057 | 2849 | fprintf (file, " extern"); |
06e77878 AO |
2850 | if (S_IS_WEAK (sym)) |
2851 | fprintf (file, " weak"); | |
49309057 ILT |
2852 | if (S_IS_DEBUG (sym)) |
2853 | fprintf (file, " debug"); | |
2854 | if (S_IS_DEFINED (sym)) | |
2855 | fprintf (file, " defined"); | |
2856 | } | |
06e77878 AO |
2857 | if (S_IS_WEAKREFR (sym)) |
2858 | fprintf (file, " weakrefr"); | |
2859 | if (S_IS_WEAKREFD (sym)) | |
2860 | fprintf (file, " weakrefd"); | |
252b5132 | 2861 | fprintf (file, " %s", segment_name (S_GET_SEGMENT (sym))); |
49309057 | 2862 | if (symbol_resolved_p (sym)) |
252b5132 RH |
2863 | { |
2864 | segT s = S_GET_SEGMENT (sym); | |
2865 | ||
2866 | if (s != undefined_section | |
411863a4 | 2867 | && s != expr_section) |
0af1713e | 2868 | fprintf (file, " %lx", (unsigned long) S_GET_VALUE (sym)); |
252b5132 RH |
2869 | } |
2870 | else if (indent_level < max_indent_level | |
2871 | && S_GET_SEGMENT (sym) != undefined_section) | |
2872 | { | |
2873 | indent_level++; | |
2874 | fprintf (file, "\n%*s<", indent_level * 4, ""); | |
49309057 ILT |
2875 | if (LOCAL_SYMBOL_CHECK (sym)) |
2876 | fprintf (file, "constant %lx", | |
0af1713e | 2877 | (unsigned long) ((struct local_symbol *) sym)->lsy_value); |
49309057 ILT |
2878 | else |
2879 | print_expr_1 (file, &sym->sy_value); | |
252b5132 RH |
2880 | fprintf (file, ">"); |
2881 | indent_level--; | |
2882 | } | |
2883 | fflush (file); | |
2884 | } | |
2885 | ||
2886 | void | |
74937d39 | 2887 | print_symbol_value (symbolS *sym) |
252b5132 RH |
2888 | { |
2889 | indent_level = 0; | |
2890 | print_symbol_value_1 (stderr, sym); | |
2891 | fprintf (stderr, "\n"); | |
2892 | } | |
2893 | ||
2894 | static void | |
74937d39 | 2895 | print_binary (FILE *file, const char *name, expressionS *exp) |
252b5132 RH |
2896 | { |
2897 | indent_level++; | |
2898 | fprintf (file, "%s\n%*s<", name, indent_level * 4, ""); | |
2899 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2900 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2901 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2902 | fprintf (file, ">"); | |
2903 | indent_level--; | |
2904 | } | |
2905 | ||
2906 | void | |
74937d39 | 2907 | print_expr_1 (FILE *file, expressionS *exp) |
252b5132 | 2908 | { |
d2df793a NC |
2909 | fprintf (file, "expr "); |
2910 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) exp)); | |
2911 | fprintf (file, " "); | |
252b5132 RH |
2912 | switch (exp->X_op) |
2913 | { | |
2914 | case O_illegal: | |
2915 | fprintf (file, "illegal"); | |
2916 | break; | |
2917 | case O_absent: | |
2918 | fprintf (file, "absent"); | |
2919 | break; | |
2920 | case O_constant: | |
0af1713e | 2921 | fprintf (file, "constant %lx", (unsigned long) exp->X_add_number); |
252b5132 RH |
2922 | break; |
2923 | case O_symbol: | |
2924 | indent_level++; | |
2925 | fprintf (file, "symbol\n%*s<", indent_level * 4, ""); | |
2926 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2927 | fprintf (file, ">"); | |
2928 | maybe_print_addnum: | |
2929 | if (exp->X_add_number) | |
2930 | fprintf (file, "\n%*s%lx", indent_level * 4, "", | |
0af1713e | 2931 | (unsigned long) exp->X_add_number); |
252b5132 RH |
2932 | indent_level--; |
2933 | break; | |
2934 | case O_register: | |
2935 | fprintf (file, "register #%d", (int) exp->X_add_number); | |
2936 | break; | |
2937 | case O_big: | |
2938 | fprintf (file, "big"); | |
2939 | break; | |
2940 | case O_uminus: | |
2941 | fprintf (file, "uminus -<"); | |
2942 | indent_level++; | |
2943 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2944 | fprintf (file, ">"); | |
2945 | goto maybe_print_addnum; | |
2946 | case O_bit_not: | |
2947 | fprintf (file, "bit_not"); | |
2948 | break; | |
2949 | case O_multiply: | |
2950 | print_binary (file, "multiply", exp); | |
2951 | break; | |
2952 | case O_divide: | |
2953 | print_binary (file, "divide", exp); | |
2954 | break; | |
2955 | case O_modulus: | |
2956 | print_binary (file, "modulus", exp); | |
2957 | break; | |
2958 | case O_left_shift: | |
2959 | print_binary (file, "lshift", exp); | |
2960 | break; | |
2961 | case O_right_shift: | |
2962 | print_binary (file, "rshift", exp); | |
2963 | break; | |
2964 | case O_bit_inclusive_or: | |
2965 | print_binary (file, "bit_ior", exp); | |
2966 | break; | |
2967 | case O_bit_exclusive_or: | |
2968 | print_binary (file, "bit_xor", exp); | |
2969 | break; | |
2970 | case O_bit_and: | |
2971 | print_binary (file, "bit_and", exp); | |
2972 | break; | |
2973 | case O_eq: | |
2974 | print_binary (file, "eq", exp); | |
2975 | break; | |
2976 | case O_ne: | |
2977 | print_binary (file, "ne", exp); | |
2978 | break; | |
2979 | case O_lt: | |
2980 | print_binary (file, "lt", exp); | |
2981 | break; | |
2982 | case O_le: | |
2983 | print_binary (file, "le", exp); | |
2984 | break; | |
2985 | case O_ge: | |
2986 | print_binary (file, "ge", exp); | |
2987 | break; | |
2988 | case O_gt: | |
2989 | print_binary (file, "gt", exp); | |
2990 | break; | |
2991 | case O_logical_and: | |
2992 | print_binary (file, "logical_and", exp); | |
2993 | break; | |
2994 | case O_logical_or: | |
2995 | print_binary (file, "logical_or", exp); | |
2996 | break; | |
2997 | case O_add: | |
2998 | indent_level++; | |
2999 | fprintf (file, "add\n%*s<", indent_level * 4, ""); | |
3000 | print_symbol_value_1 (file, exp->X_add_symbol); | |
3001 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
3002 | print_symbol_value_1 (file, exp->X_op_symbol); | |
3003 | fprintf (file, ">"); | |
3004 | goto maybe_print_addnum; | |
3005 | case O_subtract: | |
3006 | indent_level++; | |
3007 | fprintf (file, "subtract\n%*s<", indent_level * 4, ""); | |
3008 | print_symbol_value_1 (file, exp->X_add_symbol); | |
3009 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
3010 | print_symbol_value_1 (file, exp->X_op_symbol); | |
3011 | fprintf (file, ">"); | |
3012 | goto maybe_print_addnum; | |
3013 | default: | |
3014 | fprintf (file, "{unknown opcode %d}", (int) exp->X_op); | |
3015 | break; | |
3016 | } | |
3017 | fflush (stdout); | |
3018 | } | |
3019 | ||
3020 | void | |
74937d39 | 3021 | print_expr (expressionS *exp) |
252b5132 RH |
3022 | { |
3023 | print_expr_1 (stderr, exp); | |
3024 | fprintf (stderr, "\n"); | |
3025 | } | |
3026 | ||
3027 | void | |
74937d39 | 3028 | symbol_print_statistics (FILE *file) |
252b5132 RH |
3029 | { |
3030 | hash_print_statistics (file, "symbol table", sy_hash); | |
49309057 ILT |
3031 | hash_print_statistics (file, "mini local symbol table", local_hash); |
3032 | fprintf (file, "%lu mini local symbols created, %lu converted\n", | |
3033 | local_symbol_count, local_symbol_conversion_count); | |
252b5132 | 3034 | } |
280d71bf DB |
3035 | |
3036 | #ifdef OBJ_COMPLEX_RELC | |
3037 | ||
3038 | /* Convert given symbol to a new complex-relocation symbol name. This | |
6f12865c | 3039 | may be a recursive function, since it might be called for non-leaf |
280d71bf | 3040 | nodes (plain symbols) in the expression tree. The caller owns the |
6f12865c AM |
3041 | returning string, so should free it eventually. Errors are |
3042 | indicated via as_bad and a NULL return value. The given symbol | |
280d71bf DB |
3043 | is marked with sy_used_in_reloc. */ |
3044 | ||
3045 | char * | |
3046 | symbol_relc_make_sym (symbolS * sym) | |
3047 | { | |
3048 | char * terminal = NULL; | |
3049 | const char * sname; | |
3050 | char typetag; | |
3051 | int sname_len; | |
3052 | ||
9c2799c2 | 3053 | gas_assert (sym != NULL); |
280d71bf DB |
3054 | |
3055 | /* Recurse to symbol_relc_make_expr if this symbol | |
3056 | is defined as an expression or a plain value. */ | |
3057 | if ( S_GET_SEGMENT (sym) == expr_section | |
3058 | || S_GET_SEGMENT (sym) == absolute_section) | |
3059 | return symbol_relc_make_expr (& sym->sy_value); | |
3060 | ||
3061 | /* This may be a "fake symbol" L0\001, referring to ".". | |
3062 | Write out a special null symbol to refer to this position. */ | |
3063 | if (! strcmp (S_GET_NAME (sym), FAKE_LABEL_NAME)) | |
3064 | return xstrdup ("."); | |
3065 | ||
3066 | /* We hope this is a plain leaf symbol. Construct the encoding | |
3067 | as {S,s}II...:CCCCCCC.... | |
3068 | where 'S'/'s' means section symbol / plain symbol | |
3069 | III is decimal for the symbol name length | |
3070 | CCC is the symbol name itself. */ | |
3071 | symbol_mark_used_in_reloc (sym); | |
3072 | ||
3073 | sname = S_GET_NAME (sym); | |
3074 | sname_len = strlen (sname); | |
3075 | typetag = symbol_section_p (sym) ? 'S' : 's'; | |
3076 | ||
3077 | terminal = xmalloc (1 /* S or s */ | |
3078 | + 8 /* sname_len in decimal */ | |
3079 | + 1 /* _ spacer */ | |
3080 | + sname_len /* name itself */ | |
3081 | + 1 /* \0 */ ); | |
3082 | ||
3083 | sprintf (terminal, "%c%d:%s", typetag, sname_len, sname); | |
3084 | return terminal; | |
3085 | } | |
3086 | ||
3087 | /* Convert given value to a new complex-relocation symbol name. This | |
3088 | is a non-recursive function, since it is be called for leaf nodes | |
3089 | (plain values) in the expression tree. The caller owns the | |
3090 | returning string, so should free() it eventually. No errors. */ | |
3091 | ||
3092 | char * | |
3093 | symbol_relc_make_value (offsetT val) | |
3094 | { | |
3095 | char * terminal = xmalloc (28); /* Enough for long long. */ | |
3096 | ||
3097 | terminal[0] = '#'; | |
1a412f5f | 3098 | bfd_sprintf_vma (stdoutput, terminal + 1, val); |
280d71bf DB |
3099 | return terminal; |
3100 | } | |
3101 | ||
3102 | /* Convert given expression to a new complex-relocation symbol name. | |
3103 | This is a recursive function, since it traverses the entire given | |
3104 | expression tree. The caller owns the returning string, so should | |
3105 | free() it eventually. Errors are indicated via as_bad() and a NULL | |
3106 | return value. */ | |
3107 | ||
3108 | char * | |
3109 | symbol_relc_make_expr (expressionS * exp) | |
3110 | { | |
3111 | char * opstr = NULL; /* Operator prefix string. */ | |
3112 | int arity = 0; /* Arity of this operator. */ | |
3113 | char * operands[3]; /* Up to three operands. */ | |
3114 | char * concat_string = NULL; | |
3115 | ||
3116 | operands[0] = operands[1] = operands[2] = NULL; | |
3117 | ||
9c2799c2 | 3118 | gas_assert (exp != NULL); |
280d71bf DB |
3119 | |
3120 | /* Match known operators -> fill in opstr, arity, operands[] and fall | |
34bca508 | 3121 | through to construct subexpression fragments; may instead return |
280d71bf DB |
3122 | string directly for leaf nodes. */ |
3123 | ||
34bca508 | 3124 | /* See expr.h for the meaning of all these enums. Many operators |
280d71bf DB |
3125 | have an unnatural arity (X_add_number implicitly added). The |
3126 | conversion logic expands them to explicit "+" subexpressions. */ | |
3127 | ||
3128 | switch (exp->X_op) | |
3129 | { | |
3130 | default: | |
3131 | as_bad ("Unknown expression operator (enum %d)", exp->X_op); | |
3132 | break; | |
3133 | ||
3134 | /* Leaf nodes. */ | |
3135 | case O_constant: | |
3136 | return symbol_relc_make_value (exp->X_add_number); | |
3137 | ||
3138 | case O_symbol: | |
34bca508 L |
3139 | if (exp->X_add_number) |
3140 | { | |
3141 | arity = 2; | |
3142 | opstr = "+"; | |
280d71bf DB |
3143 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); |
3144 | operands[1] = symbol_relc_make_value (exp->X_add_number); | |
3145 | break; | |
3146 | } | |
3147 | else | |
3148 | return symbol_relc_make_sym (exp->X_add_symbol); | |
3149 | ||
3150 | /* Helper macros for nesting nodes. */ | |
3151 | ||
3152 | #define HANDLE_XADD_OPT1(str_) \ | |
3153 | if (exp->X_add_number) \ | |
3154 | { \ | |
3155 | arity = 2; \ | |
3156 | opstr = "+:" str_; \ | |
3157 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3158 | operands[1] = symbol_relc_make_value (exp->X_add_number); \ | |
3159 | break; \ | |
3160 | } \ | |
3161 | else \ | |
3162 | { \ | |
3163 | arity = 1; \ | |
3164 | opstr = str_; \ | |
3165 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3166 | } \ | |
3167 | break | |
34bca508 | 3168 | |
280d71bf DB |
3169 | #define HANDLE_XADD_OPT2(str_) \ |
3170 | if (exp->X_add_number) \ | |
3171 | { \ | |
3172 | arity = 3; \ | |
3173 | opstr = "+:" str_; \ | |
3174 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3175 | operands[1] = symbol_relc_make_sym (exp->X_op_symbol); \ | |
3176 | operands[2] = symbol_relc_make_value (exp->X_add_number); \ | |
3177 | } \ | |
3178 | else \ | |
3179 | { \ | |
3180 | arity = 2; \ | |
3181 | opstr = str_; \ | |
3182 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3183 | operands[1] = symbol_relc_make_sym (exp->X_op_symbol); \ | |
3184 | } \ | |
3185 | break | |
3186 | ||
3187 | /* Nesting nodes. */ | |
3188 | ||
3189 | case O_uminus: HANDLE_XADD_OPT1 ("0-"); | |
3190 | case O_bit_not: HANDLE_XADD_OPT1 ("~"); | |
3191 | case O_logical_not: HANDLE_XADD_OPT1 ("!"); | |
3192 | case O_multiply: HANDLE_XADD_OPT2 ("*"); | |
3193 | case O_divide: HANDLE_XADD_OPT2 ("/"); | |
3194 | case O_modulus: HANDLE_XADD_OPT2 ("%"); | |
3195 | case O_left_shift: HANDLE_XADD_OPT2 ("<<"); | |
3196 | case O_right_shift: HANDLE_XADD_OPT2 (">>"); | |
3197 | case O_bit_inclusive_or: HANDLE_XADD_OPT2 ("|"); | |
3198 | case O_bit_exclusive_or: HANDLE_XADD_OPT2 ("^"); | |
3199 | case O_bit_and: HANDLE_XADD_OPT2 ("&"); | |
3200 | case O_add: HANDLE_XADD_OPT2 ("+"); | |
3201 | case O_subtract: HANDLE_XADD_OPT2 ("-"); | |
3202 | case O_eq: HANDLE_XADD_OPT2 ("=="); | |
3203 | case O_ne: HANDLE_XADD_OPT2 ("!="); | |
3204 | case O_lt: HANDLE_XADD_OPT2 ("<"); | |
3205 | case O_le: HANDLE_XADD_OPT2 ("<="); | |
3206 | case O_ge: HANDLE_XADD_OPT2 (">="); | |
3207 | case O_gt: HANDLE_XADD_OPT2 (">"); | |
3208 | case O_logical_and: HANDLE_XADD_OPT2 ("&&"); | |
3209 | case O_logical_or: HANDLE_XADD_OPT2 ("||"); | |
3210 | } | |
3211 | ||
3212 | /* Validate & reject early. */ | |
3213 | if (arity >= 1 && ((operands[0] == NULL) || (strlen (operands[0]) == 0))) | |
3214 | opstr = NULL; | |
3215 | if (arity >= 2 && ((operands[1] == NULL) || (strlen (operands[1]) == 0))) | |
3216 | opstr = NULL; | |
3217 | if (arity >= 3 && ((operands[2] == NULL) || (strlen (operands[2]) == 0))) | |
3218 | opstr = NULL; | |
3219 | ||
3220 | if (opstr == NULL) | |
3221 | concat_string = NULL; | |
3222 | else | |
3223 | { | |
3224 | /* Allocate new string; include inter-operand padding gaps etc. */ | |
34bca508 | 3225 | concat_string = xmalloc (strlen (opstr) |
280d71bf DB |
3226 | + 1 |
3227 | + (arity >= 1 ? (strlen (operands[0]) + 1 ) : 0) | |
3228 | + (arity >= 2 ? (strlen (operands[1]) + 1 ) : 0) | |
3229 | + (arity >= 3 ? (strlen (operands[2]) + 0 ) : 0) | |
3230 | + 1); | |
9c2799c2 | 3231 | gas_assert (concat_string != NULL); |
34bca508 | 3232 | |
280d71bf | 3233 | /* Format the thing. */ |
34bca508 | 3234 | sprintf (concat_string, |
280d71bf DB |
3235 | (arity == 0 ? "%s" : |
3236 | arity == 1 ? "%s:%s" : | |
3237 | arity == 2 ? "%s:%s:%s" : | |
3238 | /* arity == 3 */ "%s:%s:%s:%s"), | |
3239 | opstr, operands[0], operands[1], operands[2]); | |
3240 | } | |
3241 | ||
3242 | /* Free operand strings (not opstr). */ | |
3243 | if (arity >= 1) xfree (operands[0]); | |
3244 | if (arity >= 2) xfree (operands[1]); | |
3245 | if (arity >= 3) xfree (operands[2]); | |
3246 | ||
3247 | return concat_string; | |
3248 | } | |
3249 | ||
3250 | #endif |