Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* symbols.c -symbol table- |
f7e42eb4 | 2 | Copyright 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
5a0ade8b AM |
3 | 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, |
4 | 2011 Free Software Foundation, Inc. | |
252b5132 RH |
5 | |
6 | This file is part of GAS, the GNU Assembler. | |
7 | ||
8 | GAS is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
ec2655a6 | 10 | the Free Software Foundation; either version 3, or (at your option) |
252b5132 RH |
11 | any later version. |
12 | ||
13 | GAS is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GAS; see the file COPYING. If not, write to the Free | |
4b4da160 NC |
20 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
21 | 02110-1301, USA. */ | |
252b5132 | 22 | |
7c743825 | 23 | /* #define DEBUG_SYMS / * to debug symbol list maintenance. */ |
252b5132 | 24 | |
252b5132 RH |
25 | #include "as.h" |
26 | ||
3882b010 | 27 | #include "safe-ctype.h" |
252b5132 RH |
28 | #include "obstack.h" /* For "symbols.h" */ |
29 | #include "subsegs.h" | |
30 | ||
49309057 ILT |
31 | #include "struc-symbol.h" |
32 | ||
252b5132 RH |
33 | /* This is non-zero if symbols are case sensitive, which is the |
34 | default. */ | |
35 | int symbols_case_sensitive = 1; | |
36 | ||
37 | #ifndef WORKING_DOT_WORD | |
38 | extern int new_broken_words; | |
39 | #endif | |
40 | ||
41 | /* symbol-name => struct symbol pointer */ | |
42 | static struct hash_control *sy_hash; | |
43 | ||
49309057 ILT |
44 | /* Table of local symbols. */ |
45 | static struct hash_control *local_hash; | |
46 | ||
7c743825 | 47 | /* Below are commented in "symbols.h". */ |
252b5132 RH |
48 | symbolS *symbol_rootP; |
49 | symbolS *symbol_lastP; | |
50 | symbolS abs_symbol; | |
4a826962 | 51 | symbolS dot_symbol; |
252b5132 RH |
52 | |
53 | #ifdef DEBUG_SYMS | |
54 | #define debug_verify_symchain verify_symbol_chain | |
55 | #else | |
56 | #define debug_verify_symchain(root, last) ((void) 0) | |
57 | #endif | |
58 | ||
aa257fcd NC |
59 | #define DOLLAR_LABEL_CHAR '\001' |
60 | #define LOCAL_LABEL_CHAR '\002' | |
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) \ | |
181 | (s->bsym == NULL \ | |
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 | ||
87c245cc | 190 | static 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); |
49309057 ILT |
201 | ret->lsy_marker = NULL; |
202 | ret->lsy_name = name_copy; | |
203 | ret->lsy_section = section; | |
204 | local_symbol_set_frag (ret, frag); | |
91d6fa6a | 205 | ret->lsy_value = val; |
49309057 | 206 | |
5a49b8ac | 207 | hash_jam (local_hash, name_copy, (void *) ret); |
49309057 ILT |
208 | |
209 | return ret; | |
210 | } | |
211 | ||
212 | /* Convert a local symbol into a real symbol. Note that we do not | |
213 | reclaim the space used by the local symbol. */ | |
214 | ||
215 | static symbolS * | |
74937d39 | 216 | local_symbol_convert (struct local_symbol *locsym) |
49309057 ILT |
217 | { |
218 | symbolS *ret; | |
219 | ||
9c2799c2 | 220 | gas_assert (locsym->lsy_marker == NULL); |
49309057 ILT |
221 | if (local_symbol_converted_p (locsym)) |
222 | return local_symbol_get_real_symbol (locsym); | |
223 | ||
224 | ++local_symbol_conversion_count; | |
225 | ||
bd780143 | 226 | ret = symbol_new (locsym->lsy_name, locsym->lsy_section, locsym->lsy_value, |
49309057 ILT |
227 | local_symbol_get_frag (locsym)); |
228 | ||
229 | if (local_symbol_resolved_p (locsym)) | |
230 | ret->sy_resolved = 1; | |
231 | ||
232 | /* Local symbols are always either defined or used. */ | |
233 | ret->sy_used = 1; | |
234 | ||
8c5e1ccd AO |
235 | #ifdef TC_LOCAL_SYMFIELD_CONVERT |
236 | TC_LOCAL_SYMFIELD_CONVERT (locsym, ret); | |
237 | #endif | |
238 | ||
49309057 ILT |
239 | symbol_table_insert (ret); |
240 | ||
241 | local_symbol_mark_converted (locsym); | |
242 | local_symbol_set_real_symbol (locsym, ret); | |
243 | ||
244 | hash_jam (local_hash, locsym->lsy_name, NULL); | |
245 | ||
246 | return ret; | |
247 | } | |
49309057 | 248 | \f |
a3371076 AM |
249 | static void |
250 | define_sym_at_dot (symbolS *symbolP) | |
251 | { | |
252 | symbolP->sy_frag = frag_now; | |
a3371076 AM |
253 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); |
254 | S_SET_SEGMENT (symbolP, now_seg); | |
255 | } | |
256 | ||
7c743825 KH |
257 | /* We have just seen "<name>:". |
258 | Creates a struct symbol unless it already exists. | |
259 | ||
260 | Gripes if we are redefining a symbol incompatibly (and ignores it). */ | |
252b5132 | 261 | |
252b5132 | 262 | symbolS * |
74937d39 KH |
263 | colon (/* Just seen "x:" - rattle symbols & frags. */ |
264 | const char *sym_name /* Symbol name, as a cannonical string. */ | |
265 | /* We copy this string: OK to alter later. */) | |
252b5132 | 266 | { |
7c743825 | 267 | register symbolS *symbolP; /* Symbol we are working with. */ |
252b5132 | 268 | |
7cf10893 | 269 | /* Sun local labels go out of scope whenever a non-local symbol is |
252b5132 | 270 | defined. */ |
7be1c489 AM |
271 | if (LOCAL_LABELS_DOLLAR |
272 | && !bfd_is_local_label_name (stdoutput, sym_name)) | |
273 | dollar_label_clear (); | |
252b5132 RH |
274 | |
275 | #ifndef WORKING_DOT_WORD | |
276 | if (new_broken_words) | |
277 | { | |
278 | struct broken_word *a; | |
279 | int possible_bytes; | |
280 | fragS *frag_tmp; | |
281 | char *frag_opcode; | |
282 | ||
7cf10893 NC |
283 | if (now_seg == absolute_section) |
284 | { | |
285 | as_bad (_("cannot define symbol `%s' in absolute section"), sym_name); | |
286 | return NULL; | |
287 | } | |
1d3b2b27 | 288 | |
252b5132 RH |
289 | possible_bytes = (md_short_jump_size |
290 | + new_broken_words * md_long_jump_size); | |
291 | ||
292 | frag_tmp = frag_now; | |
293 | frag_opcode = frag_var (rs_broken_word, | |
294 | possible_bytes, | |
295 | possible_bytes, | |
296 | (relax_substateT) 0, | |
297 | (symbolS *) broken_words, | |
298 | (offsetT) 0, | |
299 | NULL); | |
300 | ||
7c743825 KH |
301 | /* We want to store the pointer to where to insert the jump |
302 | table in the fr_opcode of the rs_broken_word frag. This | |
303 | requires a little hackery. */ | |
252b5132 RH |
304 | while (frag_tmp |
305 | && (frag_tmp->fr_type != rs_broken_word | |
306 | || frag_tmp->fr_opcode)) | |
307 | frag_tmp = frag_tmp->fr_next; | |
308 | know (frag_tmp); | |
309 | frag_tmp->fr_opcode = frag_opcode; | |
310 | new_broken_words = 0; | |
311 | ||
312 | for (a = broken_words; a && a->dispfrag == 0; a = a->next_broken_word) | |
313 | a->dispfrag = frag_tmp; | |
314 | } | |
315 | #endif /* WORKING_DOT_WORD */ | |
316 | ||
317 | if ((symbolP = symbol_find (sym_name)) != 0) | |
318 | { | |
06e77878 | 319 | S_CLEAR_WEAKREFR (symbolP); |
252b5132 RH |
320 | #ifdef RESOLVE_SYMBOL_REDEFINITION |
321 | if (RESOLVE_SYMBOL_REDEFINITION (symbolP)) | |
322 | return symbolP; | |
323 | #endif | |
7c743825 | 324 | /* Now check for undefined symbols. */ |
49309057 ILT |
325 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
326 | { | |
327 | struct local_symbol *locsym = (struct local_symbol *) symbolP; | |
328 | ||
329 | if (locsym->lsy_section != undefined_section | |
330 | && (local_symbol_get_frag (locsym) != frag_now | |
331 | || locsym->lsy_section != now_seg | |
bd780143 | 332 | || locsym->lsy_value != frag_now_fix ())) |
49309057 | 333 | { |
0e389e77 | 334 | as_bad (_("symbol `%s' is already defined"), sym_name); |
49309057 ILT |
335 | return symbolP; |
336 | } | |
337 | ||
338 | locsym->lsy_section = now_seg; | |
339 | local_symbol_set_frag (locsym, frag_now); | |
bd780143 | 340 | locsym->lsy_value = frag_now_fix (); |
49309057 | 341 | } |
b54788f8 | 342 | else if (!(S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
92757bc9 JB |
343 | || S_IS_COMMON (symbolP) |
344 | || S_IS_VOLATILE (symbolP)) | |
252b5132 | 345 | { |
89cdfe57 | 346 | if (S_IS_VOLATILE (symbolP)) |
92757bc9 JB |
347 | { |
348 | symbolP = symbol_clone (symbolP, 1); | |
349 | S_SET_VALUE (symbolP, 0); | |
350 | S_CLEAR_VOLATILE (symbolP); | |
351 | } | |
252b5132 RH |
352 | if (S_GET_VALUE (symbolP) == 0) |
353 | { | |
a3371076 | 354 | define_sym_at_dot (symbolP); |
252b5132 RH |
355 | #ifdef N_UNDF |
356 | know (N_UNDF == 0); | |
7c743825 | 357 | #endif /* if we have one, it better be zero. */ |
252b5132 RH |
358 | |
359 | } | |
360 | else | |
361 | { | |
7c743825 KH |
362 | /* There are still several cases to check: |
363 | ||
364 | A .comm/.lcomm symbol being redefined as initialized | |
365 | data is OK | |
366 | ||
367 | A .comm/.lcomm symbol being redefined with a larger | |
368 | size is also OK | |
369 | ||
370 | This only used to be allowed on VMS gas, but Sun cc | |
371 | on the sparc also depends on it. */ | |
252b5132 RH |
372 | |
373 | if (((!S_IS_DEBUG (symbolP) | |
374 | && (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)) | |
375 | && S_IS_EXTERNAL (symbolP)) | |
376 | || S_GET_SEGMENT (symbolP) == bss_section) | |
377 | && (now_seg == data_section | |
b3ce1bf7 | 378 | || now_seg == bss_section |
252b5132 RH |
379 | || now_seg == S_GET_SEGMENT (symbolP))) |
380 | { | |
7c743825 | 381 | /* Select which of the 2 cases this is. */ |
252b5132 RH |
382 | if (now_seg != data_section) |
383 | { | |
7c743825 KH |
384 | /* New .comm for prev .comm symbol. |
385 | ||
386 | If the new size is larger we just change its | |
387 | value. If the new size is smaller, we ignore | |
388 | this symbol. */ | |
252b5132 RH |
389 | if (S_GET_VALUE (symbolP) |
390 | < ((unsigned) frag_now_fix ())) | |
391 | { | |
392 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
393 | } | |
394 | } | |
395 | else | |
396 | { | |
397 | /* It is a .comm/.lcomm being converted to initialized | |
398 | data. */ | |
a3371076 | 399 | define_sym_at_dot (symbolP); |
252b5132 RH |
400 | } |
401 | } | |
402 | else | |
403 | { | |
4c63da97 AM |
404 | #if (!defined (OBJ_AOUT) && !defined (OBJ_MAYBE_AOUT) \ |
405 | && !defined (OBJ_BOUT) && !defined (OBJ_MAYBE_BOUT)) | |
406 | static const char *od_buf = ""; | |
252b5132 | 407 | #else |
4c63da97 AM |
408 | char od_buf[100]; |
409 | od_buf[0] = '\0'; | |
4c63da97 | 410 | if (OUTPUT_FLAVOR == bfd_target_aout_flavour) |
d1a6c242 KH |
411 | sprintf (od_buf, "%d.%d.", |
412 | S_GET_OTHER (symbolP), | |
413 | S_GET_DESC (symbolP)); | |
4c63da97 | 414 | #endif |
0e389e77 | 415 | as_bad (_("symbol `%s' is already defined as \"%s\"/%s%ld"), |
252b5132 RH |
416 | sym_name, |
417 | segment_name (S_GET_SEGMENT (symbolP)), | |
4c63da97 | 418 | od_buf, |
252b5132 | 419 | (long) S_GET_VALUE (symbolP)); |
252b5132 | 420 | } |
7c743825 | 421 | } /* if the undefined symbol has no value */ |
252b5132 RH |
422 | } |
423 | else | |
424 | { | |
7c743825 | 425 | /* Don't blow up if the definition is the same. */ |
252b5132 RH |
426 | if (!(frag_now == symbolP->sy_frag |
427 | && S_GET_VALUE (symbolP) == frag_now_fix () | |
428 | && S_GET_SEGMENT (symbolP) == now_seg)) | |
92757bc9 JB |
429 | { |
430 | as_bad (_("symbol `%s' is already defined"), sym_name); | |
431 | symbolP = symbol_clone (symbolP, 0); | |
a3371076 | 432 | define_sym_at_dot (symbolP); |
92757bc9 | 433 | } |
d4887adc | 434 | } |
252b5132 RH |
435 | |
436 | } | |
49309057 ILT |
437 | else if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, sym_name)) |
438 | { | |
439 | symbolP = (symbolS *) local_symbol_make (sym_name, now_seg, | |
440 | (valueT) frag_now_fix (), | |
441 | frag_now); | |
442 | } | |
252b5132 RH |
443 | else |
444 | { | |
445 | symbolP = symbol_new (sym_name, now_seg, (valueT) frag_now_fix (), | |
446 | frag_now); | |
252b5132 RH |
447 | |
448 | symbol_table_insert (symbolP); | |
d4887adc | 449 | } |
252b5132 RH |
450 | |
451 | if (mri_common_symbol != NULL) | |
452 | { | |
453 | /* This symbol is actually being defined within an MRI common | |
1d3b2b27 | 454 | section. This requires special handling. */ |
49309057 ILT |
455 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
456 | symbolP = local_symbol_convert ((struct local_symbol *) symbolP); | |
252b5132 RH |
457 | symbolP->sy_value.X_op = O_symbol; |
458 | symbolP->sy_value.X_add_symbol = mri_common_symbol; | |
459 | symbolP->sy_value.X_add_number = S_GET_VALUE (mri_common_symbol); | |
460 | symbolP->sy_frag = &zero_address_frag; | |
461 | S_SET_SEGMENT (symbolP, expr_section); | |
462 | symbolP->sy_mri_common = 1; | |
463 | } | |
464 | ||
465 | #ifdef tc_frob_label | |
466 | tc_frob_label (symbolP); | |
467 | #endif | |
468 | #ifdef obj_frob_label | |
469 | obj_frob_label (symbolP); | |
470 | #endif | |
471 | ||
472 | return symbolP; | |
473 | } | |
474 | \f | |
7c743825 | 475 | /* Die if we can't insert the symbol. */ |
252b5132 | 476 | |
7c743825 | 477 | void |
74937d39 | 478 | symbol_table_insert (symbolS *symbolP) |
252b5132 RH |
479 | { |
480 | register const char *error_string; | |
481 | ||
482 | know (symbolP); | |
483 | know (S_GET_NAME (symbolP)); | |
484 | ||
49309057 ILT |
485 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
486 | { | |
487 | error_string = hash_jam (local_hash, S_GET_NAME (symbolP), | |
5a49b8ac | 488 | (void *) symbolP); |
49309057 | 489 | if (error_string != NULL) |
0e389e77 | 490 | as_fatal (_("inserting \"%s\" into symbol table failed: %s"), |
49309057 ILT |
491 | S_GET_NAME (symbolP), error_string); |
492 | return; | |
493 | } | |
494 | ||
5a49b8ac | 495 | if ((error_string = hash_jam (sy_hash, S_GET_NAME (symbolP), (void *) symbolP))) |
252b5132 | 496 | { |
0e389e77 | 497 | as_fatal (_("inserting \"%s\" into symbol table failed: %s"), |
252b5132 | 498 | S_GET_NAME (symbolP), error_string); |
7c743825 KH |
499 | } /* on error */ |
500 | } | |
252b5132 | 501 | \f |
7c743825 KH |
502 | /* If a symbol name does not exist, create it as undefined, and insert |
503 | it into the symbol table. Return a pointer to it. */ | |
504 | ||
252b5132 | 505 | symbolS * |
74937d39 | 506 | symbol_find_or_make (const char *name) |
252b5132 RH |
507 | { |
508 | register symbolS *symbolP; | |
509 | ||
510 | symbolP = symbol_find (name); | |
511 | ||
512 | if (symbolP == NULL) | |
513 | { | |
49309057 ILT |
514 | if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, name)) |
515 | { | |
516 | symbolP = md_undefined_symbol ((char *) name); | |
517 | if (symbolP != NULL) | |
518 | return symbolP; | |
519 | ||
520 | symbolP = (symbolS *) local_symbol_make (name, undefined_section, | |
521 | (valueT) 0, | |
522 | &zero_address_frag); | |
523 | return symbolP; | |
524 | } | |
49309057 | 525 | |
252b5132 RH |
526 | symbolP = symbol_make (name); |
527 | ||
528 | symbol_table_insert (symbolP); | |
529 | } /* if symbol wasn't found */ | |
530 | ||
531 | return (symbolP); | |
7c743825 | 532 | } |
252b5132 RH |
533 | |
534 | symbolS * | |
74937d39 | 535 | symbol_make (const char *name) |
252b5132 RH |
536 | { |
537 | symbolS *symbolP; | |
538 | ||
7c743825 | 539 | /* Let the machine description default it, e.g. for register names. */ |
252b5132 RH |
540 | symbolP = md_undefined_symbol ((char *) name); |
541 | ||
542 | if (!symbolP) | |
543 | symbolP = symbol_new (name, undefined_section, (valueT) 0, &zero_address_frag); | |
544 | ||
545 | return (symbolP); | |
7c743825 | 546 | } |
252b5132 | 547 | |
9497f5ac NC |
548 | symbolS * |
549 | symbol_clone (symbolS *orgsymP, int replace) | |
550 | { | |
551 | symbolS *newsymP; | |
6a2b6326 | 552 | asymbol *bsymorg, *bsymnew; |
9497f5ac | 553 | |
4a826962 MR |
554 | /* Make sure we never clone the dot special symbol. */ |
555 | gas_assert (orgsymP != &dot_symbol); | |
556 | ||
9497f5ac NC |
557 | /* Running local_symbol_convert on a clone that's not the one currently |
558 | in local_hash would incorrectly replace the hash entry. Thus the | |
559 | symbol must be converted here. Note that the rest of the function | |
560 | depends on not encountering an unconverted symbol. */ | |
561 | if (LOCAL_SYMBOL_CHECK (orgsymP)) | |
562 | orgsymP = local_symbol_convert ((struct local_symbol *) orgsymP); | |
6a2b6326 | 563 | bsymorg = orgsymP->bsym; |
9497f5ac | 564 | |
1e9cc1c2 | 565 | newsymP = (symbolS *) obstack_alloc (¬es, sizeof (*newsymP)); |
9497f5ac | 566 | *newsymP = *orgsymP; |
6a2b6326 JB |
567 | bsymnew = bfd_make_empty_symbol (bfd_asymbol_bfd (bsymorg)); |
568 | if (bsymnew == NULL) | |
885afe7b | 569 | as_fatal ("bfd_make_empty_symbol: %s", bfd_errmsg (bfd_get_error ())); |
6a2b6326 JB |
570 | newsymP->bsym = bsymnew; |
571 | bsymnew->name = bsymorg->name; | |
25313d6a | 572 | bsymnew->flags = bsymorg->flags & ~BSF_SECTION_SYM; |
9d75b288 | 573 | bsymnew->section = bsymorg->section; |
6a2b6326 JB |
574 | bfd_copy_private_symbol_data (bfd_asymbol_bfd (bsymorg), bsymorg, |
575 | bfd_asymbol_bfd (bsymnew), bsymnew); | |
576 | ||
577 | #ifdef obj_symbol_clone_hook | |
578 | obj_symbol_clone_hook (newsymP, orgsymP); | |
579 | #endif | |
580 | ||
581 | #ifdef tc_symbol_clone_hook | |
582 | tc_symbol_clone_hook (newsymP, orgsymP); | |
583 | #endif | |
9497f5ac NC |
584 | |
585 | if (replace) | |
586 | { | |
587 | if (symbol_rootP == orgsymP) | |
588 | symbol_rootP = newsymP; | |
589 | else if (orgsymP->sy_previous) | |
590 | { | |
591 | orgsymP->sy_previous->sy_next = newsymP; | |
592 | orgsymP->sy_previous = NULL; | |
593 | } | |
594 | if (symbol_lastP == orgsymP) | |
595 | symbol_lastP = newsymP; | |
596 | else if (orgsymP->sy_next) | |
597 | orgsymP->sy_next->sy_previous = newsymP; | |
73e24c68 AM |
598 | |
599 | /* Symbols that won't be output can't be external. */ | |
600 | S_CLEAR_EXTERNAL (orgsymP); | |
bdf128d6 | 601 | orgsymP->sy_previous = orgsymP->sy_next = orgsymP; |
9497f5ac NC |
602 | debug_verify_symchain (symbol_rootP, symbol_lastP); |
603 | ||
604 | symbol_table_insert (newsymP); | |
605 | } | |
bdf128d6 | 606 | else |
73e24c68 AM |
607 | { |
608 | /* Symbols that won't be output can't be external. */ | |
609 | S_CLEAR_EXTERNAL (newsymP); | |
610 | newsymP->sy_previous = newsymP->sy_next = newsymP; | |
611 | } | |
9497f5ac NC |
612 | |
613 | return newsymP; | |
614 | } | |
615 | ||
616 | /* Referenced symbols, if they are forward references, need to be cloned | |
617 | (without replacing the original) so that the value of the referenced | |
618 | symbols at the point of use . */ | |
619 | ||
620 | #undef symbol_clone_if_forward_ref | |
621 | symbolS * | |
622 | symbol_clone_if_forward_ref (symbolS *symbolP, int is_forward) | |
623 | { | |
624 | if (symbolP && !LOCAL_SYMBOL_CHECK (symbolP)) | |
625 | { | |
626 | symbolS *add_symbol = symbolP->sy_value.X_add_symbol; | |
627 | symbolS *op_symbol = symbolP->sy_value.X_op_symbol; | |
628 | ||
629 | if (symbolP->sy_forward_ref) | |
630 | is_forward = 1; | |
631 | ||
632 | if (is_forward) | |
633 | { | |
634 | /* assign_symbol() clones volatile symbols; pre-existing expressions | |
635 | hold references to the original instance, but want the current | |
636 | value. Just repeat the lookup. */ | |
637 | if (add_symbol && S_IS_VOLATILE (add_symbol)) | |
638 | add_symbol = symbol_find_exact (S_GET_NAME (add_symbol)); | |
639 | if (op_symbol && S_IS_VOLATILE (op_symbol)) | |
640 | op_symbol = symbol_find_exact (S_GET_NAME (op_symbol)); | |
641 | } | |
642 | ||
643 | /* Re-using sy_resolving here, as this routine cannot get called from | |
644 | symbol resolution code. */ | |
3df4e177 MR |
645 | if ((symbolP->bsym->section == expr_section || symbolP->sy_forward_ref) |
646 | && !symbolP->sy_resolving) | |
9497f5ac NC |
647 | { |
648 | symbolP->sy_resolving = 1; | |
649 | add_symbol = symbol_clone_if_forward_ref (add_symbol, is_forward); | |
650 | op_symbol = symbol_clone_if_forward_ref (op_symbol, is_forward); | |
651 | symbolP->sy_resolving = 0; | |
652 | } | |
653 | ||
654 | if (symbolP->sy_forward_ref | |
655 | || add_symbol != symbolP->sy_value.X_add_symbol | |
656 | || op_symbol != symbolP->sy_value.X_op_symbol) | |
3df4e177 | 657 | { |
4a826962 MR |
658 | if (symbolP != &dot_symbol) |
659 | { | |
660 | symbolP = symbol_clone (symbolP, 0); | |
661 | symbolP->sy_resolving = 0; | |
662 | } | |
663 | else | |
a1facbec MR |
664 | { |
665 | symbolP = symbol_temp_new_now (); | |
666 | #ifdef tc_new_dot_label | |
667 | tc_new_dot_label (symbolP); | |
668 | #endif | |
669 | } | |
3df4e177 | 670 | } |
9497f5ac NC |
671 | |
672 | symbolP->sy_value.X_add_symbol = add_symbol; | |
673 | symbolP->sy_value.X_op_symbol = op_symbol; | |
674 | } | |
675 | ||
676 | return symbolP; | |
677 | } | |
678 | ||
b7d6ed97 | 679 | symbolS * |
74937d39 | 680 | symbol_temp_new (segT seg, valueT ofs, fragS *frag) |
b7d6ed97 | 681 | { |
756d1d01 | 682 | return symbol_new (FAKE_LABEL_NAME, seg, ofs, frag); |
b7d6ed97 RH |
683 | } |
684 | ||
685 | symbolS * | |
74937d39 | 686 | symbol_temp_new_now (void) |
b7d6ed97 RH |
687 | { |
688 | return symbol_temp_new (now_seg, frag_now_fix (), frag_now); | |
689 | } | |
690 | ||
691 | symbolS * | |
74937d39 | 692 | symbol_temp_make (void) |
b7d6ed97 | 693 | { |
756d1d01 | 694 | return symbol_make (FAKE_LABEL_NAME); |
b7d6ed97 RH |
695 | } |
696 | ||
7c743825 KH |
697 | /* Implement symbol table lookup. |
698 | In: A symbol's name as a string: '\0' can't be part of a symbol name. | |
699 | Out: NULL if the name was not in the symbol table, else the address | |
700 | of a struct symbol associated with that name. */ | |
252b5132 | 701 | |
9758f3fc | 702 | symbolS * |
74937d39 | 703 | symbol_find_exact (const char *name) |
06e77878 AO |
704 | { |
705 | return symbol_find_exact_noref (name, 0); | |
706 | } | |
707 | ||
708 | symbolS * | |
709 | symbol_find_exact_noref (const char *name, int noref) | |
9758f3fc | 710 | { |
7be1c489 | 711 | struct local_symbol *locsym; |
06e77878 | 712 | symbolS* sym; |
9758f3fc | 713 | |
7be1c489 AM |
714 | locsym = (struct local_symbol *) hash_find (local_hash, name); |
715 | if (locsym != NULL) | |
716 | return (symbolS *) locsym; | |
9758f3fc | 717 | |
06e77878 AO |
718 | sym = ((symbolS *) hash_find (sy_hash, name)); |
719 | ||
720 | /* Any references to the symbol, except for the reference in | |
721 | .weakref, must clear this flag, such that the symbol does not | |
722 | turn into a weak symbol. Note that we don't have to handle the | |
723 | local_symbol case, since a weakrefd is always promoted out of the | |
724 | local_symbol table when it is turned into a weak symbol. */ | |
725 | if (sym && ! noref) | |
726 | S_CLEAR_WEAKREFD (sym); | |
727 | ||
728 | return sym; | |
9758f3fc AM |
729 | } |
730 | ||
252b5132 | 731 | symbolS * |
91c4c449 | 732 | symbol_find (const char *name) |
06e77878 AO |
733 | { |
734 | return symbol_find_noref (name, 0); | |
735 | } | |
736 | ||
737 | symbolS * | |
738 | symbol_find_noref (const char *name, int noref) | |
252b5132 | 739 | { |
252b5132 RH |
740 | #ifdef tc_canonicalize_symbol_name |
741 | { | |
742 | char *copy; | |
03987ced | 743 | size_t len = strlen (name) + 1; |
252b5132 | 744 | |
03987ced RH |
745 | copy = (char *) alloca (len); |
746 | memcpy (copy, name, len); | |
252b5132 RH |
747 | name = tc_canonicalize_symbol_name (copy); |
748 | } | |
749 | #endif | |
750 | ||
751 | if (! symbols_case_sensitive) | |
752 | { | |
03987ced RH |
753 | char *copy; |
754 | const char *orig; | |
755 | unsigned char c; | |
756 | ||
757 | orig = name; | |
758 | name = copy = (char *) alloca (strlen (name) + 1); | |
759 | ||
760 | while ((c = *orig++) != '\0') | |
761 | { | |
3882b010 | 762 | *copy++ = TOUPPER (c); |
03987ced RH |
763 | } |
764 | *copy = '\0'; | |
252b5132 RH |
765 | } |
766 | ||
06e77878 | 767 | return symbol_find_exact_noref (name, noref); |
252b5132 RH |
768 | } |
769 | ||
7c743825 KH |
770 | /* Once upon a time, symbols were kept in a singly linked list. At |
771 | least coff needs to be able to rearrange them from time to time, for | |
772 | which a doubly linked list is much more convenient. Loic did these | |
773 | as macros which seemed dangerous to me so they're now functions. | |
774 | xoxorich. */ | |
775 | ||
776 | /* Link symbol ADDME after symbol TARGET in the chain. */ | |
252b5132 | 777 | |
7c743825 | 778 | void |
74937d39 KH |
779 | symbol_append (symbolS *addme, symbolS *target, |
780 | symbolS **rootPP, symbolS **lastPP) | |
252b5132 | 781 | { |
49309057 ILT |
782 | if (LOCAL_SYMBOL_CHECK (addme)) |
783 | abort (); | |
784 | if (target != NULL && LOCAL_SYMBOL_CHECK (target)) | |
785 | abort (); | |
786 | ||
252b5132 RH |
787 | if (target == NULL) |
788 | { | |
789 | know (*rootPP == NULL); | |
790 | know (*lastPP == NULL); | |
791 | addme->sy_next = NULL; | |
252b5132 | 792 | addme->sy_previous = NULL; |
252b5132 RH |
793 | *rootPP = addme; |
794 | *lastPP = addme; | |
795 | return; | |
7c743825 | 796 | } /* if the list is empty */ |
252b5132 RH |
797 | |
798 | if (target->sy_next != NULL) | |
799 | { | |
252b5132 | 800 | target->sy_next->sy_previous = addme; |
252b5132 RH |
801 | } |
802 | else | |
803 | { | |
804 | know (*lastPP == target); | |
805 | *lastPP = addme; | |
7c743825 | 806 | } /* if we have a next */ |
252b5132 RH |
807 | |
808 | addme->sy_next = target->sy_next; | |
809 | target->sy_next = addme; | |
252b5132 | 810 | addme->sy_previous = target; |
252b5132 RH |
811 | |
812 | debug_verify_symchain (symbol_rootP, symbol_lastP); | |
813 | } | |
814 | ||
7c743825 KH |
815 | /* Set the chain pointers of SYMBOL to null. */ |
816 | ||
817 | void | |
74937d39 | 818 | symbol_clear_list_pointers (symbolS *symbolP) |
252b5132 | 819 | { |
49309057 ILT |
820 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
821 | abort (); | |
252b5132 | 822 | symbolP->sy_next = NULL; |
252b5132 | 823 | symbolP->sy_previous = NULL; |
252b5132 RH |
824 | } |
825 | ||
7c743825 KH |
826 | /* Remove SYMBOLP from the list. */ |
827 | ||
828 | void | |
74937d39 | 829 | symbol_remove (symbolS *symbolP, symbolS **rootPP, symbolS **lastPP) |
252b5132 | 830 | { |
49309057 ILT |
831 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
832 | abort (); | |
833 | ||
252b5132 RH |
834 | if (symbolP == *rootPP) |
835 | { | |
836 | *rootPP = symbolP->sy_next; | |
7c743825 | 837 | } /* if it was the root */ |
252b5132 RH |
838 | |
839 | if (symbolP == *lastPP) | |
840 | { | |
841 | *lastPP = symbolP->sy_previous; | |
7c743825 | 842 | } /* if it was the tail */ |
252b5132 RH |
843 | |
844 | if (symbolP->sy_next != NULL) | |
845 | { | |
846 | symbolP->sy_next->sy_previous = symbolP->sy_previous; | |
7c743825 | 847 | } /* if not last */ |
252b5132 RH |
848 | |
849 | if (symbolP->sy_previous != NULL) | |
850 | { | |
851 | symbolP->sy_previous->sy_next = symbolP->sy_next; | |
7c743825 | 852 | } /* if not first */ |
252b5132 RH |
853 | |
854 | debug_verify_symchain (*rootPP, *lastPP); | |
855 | } | |
856 | ||
7c743825 KH |
857 | /* Link symbol ADDME before symbol TARGET in the chain. */ |
858 | ||
859 | void | |
74937d39 KH |
860 | symbol_insert (symbolS *addme, symbolS *target, |
861 | symbolS **rootPP, symbolS **lastPP ATTRIBUTE_UNUSED) | |
252b5132 | 862 | { |
49309057 ILT |
863 | if (LOCAL_SYMBOL_CHECK (addme)) |
864 | abort (); | |
865 | if (LOCAL_SYMBOL_CHECK (target)) | |
866 | abort (); | |
867 | ||
252b5132 RH |
868 | if (target->sy_previous != NULL) |
869 | { | |
870 | target->sy_previous->sy_next = addme; | |
871 | } | |
872 | else | |
873 | { | |
874 | know (*rootPP == target); | |
875 | *rootPP = addme; | |
7c743825 | 876 | } /* if not first */ |
252b5132 RH |
877 | |
878 | addme->sy_previous = target->sy_previous; | |
879 | target->sy_previous = addme; | |
880 | addme->sy_next = target; | |
881 | ||
882 | debug_verify_symchain (*rootPP, *lastPP); | |
883 | } | |
884 | ||
7c743825 | 885 | void |
74937d39 | 886 | verify_symbol_chain (symbolS *rootP, symbolS *lastP) |
252b5132 RH |
887 | { |
888 | symbolS *symbolP = rootP; | |
889 | ||
890 | if (symbolP == NULL) | |
891 | return; | |
892 | ||
893 | for (; symbol_next (symbolP) != NULL; symbolP = symbol_next (symbolP)) | |
894 | { | |
9c2799c2 NC |
895 | gas_assert (symbolP->bsym != NULL); |
896 | gas_assert (symbolP->sy_next->sy_previous == symbolP); | |
252b5132 RH |
897 | } |
898 | ||
9c2799c2 | 899 | gas_assert (lastP == symbolP); |
252b5132 RH |
900 | } |
901 | ||
280d71bf DB |
902 | #ifdef OBJ_COMPLEX_RELC |
903 | ||
904 | static int | |
905 | use_complex_relocs_for (symbolS * symp) | |
906 | { | |
907 | switch (symp->sy_value.X_op) | |
908 | { | |
909 | case O_constant: | |
910 | return 0; | |
911 | ||
912 | case O_symbol: | |
913 | case O_symbol_rva: | |
914 | case O_uminus: | |
915 | case O_bit_not: | |
916 | case O_logical_not: | |
917 | if ( (S_IS_COMMON (symp->sy_value.X_add_symbol) | |
918 | || S_IS_LOCAL (symp->sy_value.X_add_symbol)) | |
919 | && | |
920 | (S_IS_DEFINED (symp->sy_value.X_add_symbol) | |
921 | && S_GET_SEGMENT (symp->sy_value.X_add_symbol) != expr_section)) | |
922 | return 0; | |
923 | break; | |
924 | ||
925 | case O_multiply: | |
926 | case O_divide: | |
927 | case O_modulus: | |
928 | case O_left_shift: | |
929 | case O_right_shift: | |
930 | case O_bit_inclusive_or: | |
931 | case O_bit_or_not: | |
932 | case O_bit_exclusive_or: | |
933 | case O_bit_and: | |
934 | case O_add: | |
935 | case O_subtract: | |
936 | case O_eq: | |
937 | case O_ne: | |
938 | case O_lt: | |
939 | case O_le: | |
940 | case O_ge: | |
941 | case O_gt: | |
942 | case O_logical_and: | |
943 | case O_logical_or: | |
944 | ||
945 | if ( (S_IS_COMMON (symp->sy_value.X_add_symbol) | |
946 | || S_IS_LOCAL (symp->sy_value.X_add_symbol)) | |
947 | && | |
948 | (S_IS_COMMON (symp->sy_value.X_op_symbol) | |
949 | || S_IS_LOCAL (symp->sy_value.X_op_symbol)) | |
950 | ||
951 | && S_IS_DEFINED (symp->sy_value.X_add_symbol) | |
952 | && S_IS_DEFINED (symp->sy_value.X_op_symbol) | |
953 | && S_GET_SEGMENT (symp->sy_value.X_add_symbol) != expr_section | |
954 | && S_GET_SEGMENT (symp->sy_value.X_op_symbol) != expr_section) | |
955 | return 0; | |
956 | break; | |
957 | ||
958 | default: | |
959 | break; | |
960 | } | |
961 | return 1; | |
962 | } | |
963 | #endif | |
964 | ||
0909233e | 965 | static void |
5a0ade8b | 966 | report_op_error (symbolS *symp, symbolS *left, operatorT op, symbolS *right) |
0909233e AM |
967 | { |
968 | char *file; | |
969 | unsigned int line; | |
5a0ade8b AM |
970 | segT seg_left = left ? S_GET_SEGMENT (left) : 0; |
971 | segT seg_right = S_GET_SEGMENT (right); | |
972 | const char *opname; | |
973 | ||
974 | switch (op) | |
975 | { | |
976 | default: | |
977 | abort (); | |
978 | return; | |
979 | ||
980 | case O_uminus: opname = "-"; break; | |
981 | case O_bit_not: opname = "~"; break; | |
982 | case O_logical_not: opname = "!"; break; | |
983 | case O_multiply: opname = "*"; break; | |
984 | case O_divide: opname = "/"; break; | |
985 | case O_modulus: opname = "%"; break; | |
986 | case O_left_shift: opname = "<<"; break; | |
987 | case O_right_shift: opname = ">>"; break; | |
988 | case O_bit_inclusive_or: opname = "|"; break; | |
989 | case O_bit_or_not: opname = "|~"; break; | |
990 | case O_bit_exclusive_or: opname = "^"; break; | |
991 | case O_bit_and: opname = "&"; break; | |
992 | case O_add: opname = "+"; break; | |
993 | case O_subtract: opname = "-"; break; | |
994 | case O_eq: opname = "=="; break; | |
995 | case O_ne: opname = "!="; break; | |
996 | case O_lt: opname = "<"; break; | |
997 | case O_le: opname = "<="; break; | |
998 | case O_ge: opname = ">="; break; | |
999 | case O_gt: opname = ">"; break; | |
1000 | case O_logical_and: opname = "&&"; break; | |
1001 | case O_logical_or: opname = "||"; break; | |
1002 | } | |
1d3b2b27 | 1003 | |
0909233e AM |
1004 | if (expr_symbol_where (symp, &file, &line)) |
1005 | { | |
5a0ade8b | 1006 | if (left) |
0909233e | 1007 | as_bad_where (file, line, |
5a0ade8b AM |
1008 | _("invalid operands (%s and %s sections) for `%s'"), |
1009 | seg_left->name, seg_right->name, opname); | |
1010 | else | |
0909233e | 1011 | as_bad_where (file, line, |
5a0ade8b AM |
1012 | _("invalid operand (%s section) for `%s'"), |
1013 | seg_right->name, opname); | |
0909233e AM |
1014 | } |
1015 | else | |
1016 | { | |
5a0ade8b AM |
1017 | const char *sname = S_GET_NAME (symp); |
1018 | ||
1019 | if (left) | |
1020 | as_bad (_("invalid operands (%s and %s sections) for `%s' when setting `%s'"), | |
1021 | seg_left->name, seg_right->name, opname, sname); | |
1022 | else | |
1023 | as_bad (_("invalid operand (%s section) for `%s' when setting `%s'"), | |
1024 | seg_right->name, opname, sname); | |
0909233e AM |
1025 | } |
1026 | } | |
1027 | ||
252b5132 RH |
1028 | /* Resolve the value of a symbol. This is called during the final |
1029 | pass over the symbol table to resolve any symbols with complex | |
1030 | values. */ | |
1031 | ||
1032 | valueT | |
74937d39 | 1033 | resolve_symbol_value (symbolS *symp) |
252b5132 RH |
1034 | { |
1035 | int resolved; | |
03e83a45 | 1036 | valueT final_val = 0; |
252b5132 RH |
1037 | segT final_seg; |
1038 | ||
49309057 ILT |
1039 | if (LOCAL_SYMBOL_CHECK (symp)) |
1040 | { | |
1041 | struct local_symbol *locsym = (struct local_symbol *) symp; | |
1042 | ||
bd780143 | 1043 | final_val = locsym->lsy_value; |
49309057 | 1044 | if (local_symbol_resolved_p (locsym)) |
bd780143 | 1045 | return final_val; |
49309057 | 1046 | |
bd780143 | 1047 | final_val += local_symbol_get_frag (locsym)->fr_address / OCTETS_PER_BYTE; |
49309057 | 1048 | |
6386f3a7 | 1049 | if (finalize_syms) |
49309057 | 1050 | { |
bd780143 | 1051 | locsym->lsy_value = final_val; |
49309057 ILT |
1052 | local_symbol_mark_resolved (locsym); |
1053 | } | |
1054 | ||
1055 | return final_val; | |
1056 | } | |
1057 | ||
252b5132 RH |
1058 | if (symp->sy_resolved) |
1059 | { | |
1060 | if (symp->sy_value.X_op == O_constant) | |
1061 | return (valueT) symp->sy_value.X_add_number; | |
1062 | else | |
1063 | return 0; | |
1064 | } | |
1065 | ||
1066 | resolved = 0; | |
1067 | final_seg = S_GET_SEGMENT (symp); | |
1068 | ||
1069 | if (symp->sy_resolving) | |
1070 | { | |
6386f3a7 | 1071 | if (finalize_syms) |
0e389e77 | 1072 | as_bad (_("symbol definition loop encountered at `%s'"), |
7c743825 | 1073 | S_GET_NAME (symp)); |
252b5132 RH |
1074 | final_val = 0; |
1075 | resolved = 1; | |
1076 | } | |
280d71bf DB |
1077 | #ifdef OBJ_COMPLEX_RELC |
1078 | else if (final_seg == expr_section | |
1079 | && use_complex_relocs_for (symp)) | |
1080 | { | |
1081 | symbolS * relc_symbol = NULL; | |
1082 | char * relc_symbol_name = NULL; | |
1083 | ||
1084 | relc_symbol_name = symbol_relc_make_expr (& symp->sy_value); | |
1085 | ||
1086 | /* For debugging, print out conversion input & output. */ | |
1087 | #ifdef DEBUG_SYMS | |
1088 | print_expr (& symp->sy_value); | |
1089 | if (relc_symbol_name) | |
1090 | fprintf (stderr, "-> relc symbol: %s\n", relc_symbol_name); | |
1091 | #endif | |
1092 | ||
1093 | if (relc_symbol_name != NULL) | |
1094 | relc_symbol = symbol_new (relc_symbol_name, undefined_section, | |
1095 | 0, & zero_address_frag); | |
1096 | ||
1097 | if (relc_symbol == NULL) | |
1098 | { | |
1099 | as_bad (_("cannot convert expression symbol %s to complex relocation"), | |
1100 | S_GET_NAME (symp)); | |
1101 | resolved = 0; | |
1102 | } | |
1103 | else | |
1104 | { | |
1105 | symbol_table_insert (relc_symbol); | |
1106 | ||
1107 | /* S_CLEAR_EXTERNAL (relc_symbol); */ | |
1108 | if (symp->bsym->flags & BSF_SRELC) | |
1109 | relc_symbol->bsym->flags |= BSF_SRELC; | |
1110 | else | |
1111 | relc_symbol->bsym->flags |= BSF_RELC; | |
1112 | /* symp->bsym->flags |= BSF_RELC; */ | |
1113 | copy_symbol_attributes (symp, relc_symbol); | |
1114 | symp->sy_value.X_op = O_symbol; | |
1115 | symp->sy_value.X_add_symbol = relc_symbol; | |
1116 | symp->sy_value.X_add_number = 0; | |
1117 | resolved = 1; | |
1118 | } | |
1119 | ||
1120 | final_seg = undefined_section; | |
1121 | goto exit_dont_set_value; | |
1122 | } | |
1123 | #endif | |
252b5132 RH |
1124 | else |
1125 | { | |
1126 | symbolS *add_symbol, *op_symbol; | |
1127 | offsetT left, right; | |
1128 | segT seg_left, seg_right; | |
1129 | operatorT op; | |
2d034539 | 1130 | int move_seg_ok; |
252b5132 RH |
1131 | |
1132 | symp->sy_resolving = 1; | |
1133 | ||
1134 | /* Help out with CSE. */ | |
1135 | add_symbol = symp->sy_value.X_add_symbol; | |
1136 | op_symbol = symp->sy_value.X_op_symbol; | |
1137 | final_val = symp->sy_value.X_add_number; | |
1138 | op = symp->sy_value.X_op; | |
1139 | ||
1140 | switch (op) | |
1141 | { | |
1142 | default: | |
1143 | BAD_CASE (op); | |
1144 | break; | |
1145 | ||
1146 | case O_absent: | |
1147 | final_val = 0; | |
1148 | /* Fall through. */ | |
1149 | ||
1150 | case O_constant: | |
bea9907b | 1151 | final_val += symp->sy_frag->fr_address / OCTETS_PER_BYTE; |
252b5132 RH |
1152 | if (final_seg == expr_section) |
1153 | final_seg = absolute_section; | |
db557034 AM |
1154 | /* Fall through. */ |
1155 | ||
1156 | case O_register: | |
252b5132 RH |
1157 | resolved = 1; |
1158 | break; | |
1159 | ||
1160 | case O_symbol: | |
1161 | case O_symbol_rva: | |
6386f3a7 | 1162 | left = resolve_symbol_value (add_symbol); |
e0890092 AM |
1163 | seg_left = S_GET_SEGMENT (add_symbol); |
1164 | if (finalize_syms) | |
1165 | symp->sy_value.X_op_symbol = NULL; | |
252b5132 | 1166 | |
e0890092 | 1167 | do_symbol: |
06e77878 AO |
1168 | if (S_IS_WEAKREFR (symp)) |
1169 | { | |
9c2799c2 | 1170 | gas_assert (final_val == 0); |
06e77878 AO |
1171 | if (S_IS_WEAKREFR (add_symbol)) |
1172 | { | |
9c2799c2 | 1173 | gas_assert (add_symbol->sy_value.X_op == O_symbol |
06e77878 AO |
1174 | && add_symbol->sy_value.X_add_number == 0); |
1175 | add_symbol = add_symbol->sy_value.X_add_symbol; | |
9c2799c2 | 1176 | gas_assert (! S_IS_WEAKREFR (add_symbol)); |
06e77878 AO |
1177 | symp->sy_value.X_add_symbol = add_symbol; |
1178 | } | |
1179 | } | |
1180 | ||
252b5132 RH |
1181 | if (symp->sy_mri_common) |
1182 | { | |
1183 | /* This is a symbol inside an MRI common section. The | |
e0890092 AM |
1184 | relocation routines are going to handle it specially. |
1185 | Don't change the value. */ | |
49309057 | 1186 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1187 | break; |
1188 | } | |
1189 | ||
6386f3a7 | 1190 | if (finalize_syms && final_val == 0) |
49309057 ILT |
1191 | { |
1192 | if (LOCAL_SYMBOL_CHECK (add_symbol)) | |
1193 | add_symbol = local_symbol_convert ((struct local_symbol *) | |
1194 | add_symbol); | |
1195 | copy_symbol_attributes (symp, add_symbol); | |
1196 | } | |
252b5132 | 1197 | |
e0890092 AM |
1198 | /* If we have equated this symbol to an undefined or common |
1199 | symbol, keep X_op set to O_symbol, and don't change | |
1200 | X_add_number. This permits the routine which writes out | |
1201 | relocation to detect this case, and convert the | |
1202 | relocation to be against the symbol to which this symbol | |
1203 | is equated. */ | |
977cdf5a | 1204 | if (! S_IS_DEFINED (add_symbol) |
7be1c489 | 1205 | #if defined (OBJ_COFF) && defined (TE_PE) |
977cdf5a NC |
1206 | || S_IS_WEAK (add_symbol) |
1207 | #endif | |
1208 | || S_IS_COMMON (add_symbol)) | |
252b5132 | 1209 | { |
6386f3a7 | 1210 | if (finalize_syms) |
252b5132 | 1211 | { |
252b5132 RH |
1212 | symp->sy_value.X_op = O_symbol; |
1213 | symp->sy_value.X_add_symbol = add_symbol; | |
1214 | symp->sy_value.X_add_number = final_val; | |
e0890092 AM |
1215 | /* Use X_op_symbol as a flag. */ |
1216 | symp->sy_value.X_op_symbol = add_symbol; | |
252b5132 | 1217 | } |
5a0ade8b | 1218 | final_seg = seg_left; |
252b5132 | 1219 | final_val = 0; |
49309057 | 1220 | resolved = symbol_resolved_p (add_symbol); |
c89c8534 | 1221 | symp->sy_resolving = 0; |
252b5132 RH |
1222 | goto exit_dont_set_value; |
1223 | } | |
0023dd27 AM |
1224 | else if (finalize_syms |
1225 | && ((final_seg == expr_section && seg_left != expr_section) | |
1226 | || symbol_shadow_p (symp))) | |
e0890092 AM |
1227 | { |
1228 | /* If the symbol is an expression symbol, do similarly | |
1229 | as for undefined and common syms above. Handles | |
1230 | "sym +/- expr" where "expr" cannot be evaluated | |
1231 | immediately, and we want relocations to be against | |
1232 | "sym", eg. because it is weak. */ | |
1233 | symp->sy_value.X_op = O_symbol; | |
1234 | symp->sy_value.X_add_symbol = add_symbol; | |
1235 | symp->sy_value.X_add_number = final_val; | |
1236 | symp->sy_value.X_op_symbol = add_symbol; | |
1237 | final_seg = seg_left; | |
1238 | final_val += symp->sy_frag->fr_address + left; | |
1239 | resolved = symbol_resolved_p (add_symbol); | |
1240 | symp->sy_resolving = 0; | |
1241 | goto exit_dont_set_value; | |
1242 | } | |
252b5132 RH |
1243 | else |
1244 | { | |
1245 | final_val += symp->sy_frag->fr_address + left; | |
1246 | if (final_seg == expr_section || final_seg == undefined_section) | |
e0890092 | 1247 | final_seg = seg_left; |
252b5132 RH |
1248 | } |
1249 | ||
49309057 | 1250 | resolved = symbol_resolved_p (add_symbol); |
06e77878 AO |
1251 | if (S_IS_WEAKREFR (symp)) |
1252 | goto exit_dont_set_value; | |
252b5132 RH |
1253 | break; |
1254 | ||
1255 | case O_uminus: | |
1256 | case O_bit_not: | |
1257 | case O_logical_not: | |
6386f3a7 | 1258 | left = resolve_symbol_value (add_symbol); |
784b640d | 1259 | seg_left = S_GET_SEGMENT (add_symbol); |
252b5132 | 1260 | |
0909233e AM |
1261 | /* By reducing these to the relevant dyadic operator, we get |
1262 | !S -> S == 0 permitted on anything, | |
1263 | -S -> 0 - S only permitted on absolute | |
1264 | ~S -> S ^ ~0 only permitted on absolute */ | |
1265 | if (op != O_logical_not && seg_left != absolute_section | |
1266 | && finalize_syms) | |
5a0ade8b | 1267 | report_op_error (symp, NULL, op, add_symbol); |
1d3b2b27 | 1268 | |
0909233e AM |
1269 | if (final_seg == expr_section || final_seg == undefined_section) |
1270 | final_seg = absolute_section; | |
1d3b2b27 | 1271 | |
252b5132 RH |
1272 | if (op == O_uminus) |
1273 | left = -left; | |
1274 | else if (op == O_logical_not) | |
1275 | left = !left; | |
1276 | else | |
1277 | left = ~left; | |
1278 | ||
1279 | final_val += left + symp->sy_frag->fr_address; | |
252b5132 | 1280 | |
49309057 | 1281 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1282 | break; |
1283 | ||
1284 | case O_multiply: | |
1285 | case O_divide: | |
1286 | case O_modulus: | |
1287 | case O_left_shift: | |
1288 | case O_right_shift: | |
1289 | case O_bit_inclusive_or: | |
1290 | case O_bit_or_not: | |
1291 | case O_bit_exclusive_or: | |
1292 | case O_bit_and: | |
1293 | case O_add: | |
1294 | case O_subtract: | |
1295 | case O_eq: | |
1296 | case O_ne: | |
1297 | case O_lt: | |
1298 | case O_le: | |
1299 | case O_ge: | |
1300 | case O_gt: | |
1301 | case O_logical_and: | |
1302 | case O_logical_or: | |
6386f3a7 AM |
1303 | left = resolve_symbol_value (add_symbol); |
1304 | right = resolve_symbol_value (op_symbol); | |
252b5132 RH |
1305 | seg_left = S_GET_SEGMENT (add_symbol); |
1306 | seg_right = S_GET_SEGMENT (op_symbol); | |
1307 | ||
1308 | /* Simplify addition or subtraction of a constant by folding the | |
1309 | constant into X_add_number. */ | |
e0890092 | 1310 | if (op == O_add) |
252b5132 RH |
1311 | { |
1312 | if (seg_right == absolute_section) | |
1313 | { | |
e0890092 | 1314 | final_val += right; |
252b5132 RH |
1315 | goto do_symbol; |
1316 | } | |
e0890092 | 1317 | else if (seg_left == absolute_section) |
252b5132 | 1318 | { |
252b5132 RH |
1319 | final_val += left; |
1320 | add_symbol = op_symbol; | |
1321 | left = right; | |
e0890092 AM |
1322 | seg_left = seg_right; |
1323 | goto do_symbol; | |
1324 | } | |
1325 | } | |
1326 | else if (op == O_subtract) | |
1327 | { | |
1328 | if (seg_right == absolute_section) | |
1329 | { | |
1330 | final_val -= right; | |
252b5132 RH |
1331 | goto do_symbol; |
1332 | } | |
1333 | } | |
1334 | ||
2d034539 | 1335 | move_seg_ok = 1; |
e0890092 AM |
1336 | /* Equality and non-equality tests are permitted on anything. |
1337 | Subtraction, and other comparison operators are permitted if | |
1338 | both operands are in the same section. Otherwise, both | |
1339 | operands must be absolute. We already handled the case of | |
1340 | addition or subtraction of a constant above. This will | |
1341 | probably need to be changed for an object file format which | |
2d034539 NC |
1342 | supports arbitrary expressions, such as IEEE-695. */ |
1343 | if (!(seg_left == absolute_section | |
5a0ade8b | 1344 | && seg_right == absolute_section) |
0909233e AM |
1345 | && !(op == O_eq || op == O_ne) |
1346 | && !((op == O_subtract | |
1347 | || op == O_lt || op == O_le || op == O_ge || op == O_gt) | |
1348 | && seg_left == seg_right | |
1349 | && (seg_left != undefined_section | |
1350 | || add_symbol == op_symbol))) | |
2d034539 NC |
1351 | { |
1352 | /* Don't emit messages unless we're finalizing the symbol value, | |
1353 | otherwise we may get the same message multiple times. */ | |
1354 | if (finalize_syms) | |
5a0ade8b | 1355 | report_op_error (symp, add_symbol, op, op_symbol); |
2d034539 NC |
1356 | /* However do not move the symbol into the absolute section |
1357 | if it cannot currently be resolved - this would confuse | |
1358 | other parts of the assembler into believing that the | |
1359 | expression had been evaluated to zero. */ | |
1360 | else | |
1361 | move_seg_ok = 0; | |
1362 | } | |
1d3b2b27 | 1363 | |
2d034539 NC |
1364 | if (move_seg_ok |
1365 | && (final_seg == expr_section || final_seg == undefined_section)) | |
0909233e | 1366 | final_seg = absolute_section; |
252b5132 RH |
1367 | |
1368 | /* Check for division by zero. */ | |
1369 | if ((op == O_divide || op == O_modulus) && right == 0) | |
1370 | { | |
1371 | /* If seg_right is not absolute_section, then we've | |
e0890092 | 1372 | already issued a warning about using a bad symbol. */ |
6386f3a7 | 1373 | if (seg_right == absolute_section && finalize_syms) |
252b5132 RH |
1374 | { |
1375 | char *file; | |
1376 | unsigned int line; | |
1377 | ||
1378 | if (expr_symbol_where (symp, &file, &line)) | |
1379 | as_bad_where (file, line, _("division by zero")); | |
1380 | else | |
0e389e77 | 1381 | as_bad (_("division by zero when setting `%s'"), |
252b5132 RH |
1382 | S_GET_NAME (symp)); |
1383 | } | |
1384 | ||
1385 | right = 1; | |
1386 | } | |
1387 | ||
1388 | switch (symp->sy_value.X_op) | |
1389 | { | |
1390 | case O_multiply: left *= right; break; | |
1391 | case O_divide: left /= right; break; | |
1392 | case O_modulus: left %= right; break; | |
1393 | case O_left_shift: left <<= right; break; | |
1394 | case O_right_shift: left >>= right; break; | |
1395 | case O_bit_inclusive_or: left |= right; break; | |
1396 | case O_bit_or_not: left |= ~right; break; | |
1397 | case O_bit_exclusive_or: left ^= right; break; | |
1398 | case O_bit_and: left &= right; break; | |
1399 | case O_add: left += right; break; | |
1400 | case O_subtract: left -= right; break; | |
e0890092 AM |
1401 | case O_eq: |
1402 | case O_ne: | |
1403 | left = (left == right && seg_left == seg_right | |
1404 | && (seg_left != undefined_section | |
1405 | || add_symbol == op_symbol) | |
1406 | ? ~ (offsetT) 0 : 0); | |
1407 | if (symp->sy_value.X_op == O_ne) | |
1408 | left = ~left; | |
1409 | break; | |
252b5132 RH |
1410 | case O_lt: left = left < right ? ~ (offsetT) 0 : 0; break; |
1411 | case O_le: left = left <= right ? ~ (offsetT) 0 : 0; break; | |
1412 | case O_ge: left = left >= right ? ~ (offsetT) 0 : 0; break; | |
1413 | case O_gt: left = left > right ? ~ (offsetT) 0 : 0; break; | |
1414 | case O_logical_and: left = left && right; break; | |
1415 | case O_logical_or: left = left || right; break; | |
1416 | default: abort (); | |
1417 | } | |
1418 | ||
1419 | final_val += symp->sy_frag->fr_address + left; | |
1420 | if (final_seg == expr_section || final_seg == undefined_section) | |
784b640d AM |
1421 | { |
1422 | if (seg_left == undefined_section | |
1423 | || seg_right == undefined_section) | |
1424 | final_seg = undefined_section; | |
1425 | else if (seg_left == absolute_section) | |
1426 | final_seg = seg_right; | |
1427 | else | |
1428 | final_seg = seg_left; | |
1429 | } | |
49309057 ILT |
1430 | resolved = (symbol_resolved_p (add_symbol) |
1431 | && symbol_resolved_p (op_symbol)); | |
7c743825 | 1432 | break; |
252b5132 | 1433 | |
252b5132 RH |
1434 | case O_big: |
1435 | case O_illegal: | |
1436 | /* Give an error (below) if not in expr_section. We don't | |
1437 | want to worry about expr_section symbols, because they | |
1438 | are fictional (they are created as part of expression | |
1439 | resolution), and any problems may not actually mean | |
1440 | anything. */ | |
1441 | break; | |
1442 | } | |
1443 | ||
1444 | symp->sy_resolving = 0; | |
1445 | } | |
1446 | ||
6386f3a7 | 1447 | if (finalize_syms) |
05bdb37e | 1448 | S_SET_VALUE (symp, final_val); |
252b5132 | 1449 | |
05bdb37e AM |
1450 | exit_dont_set_value: |
1451 | /* Always set the segment, even if not finalizing the value. | |
1452 | The segment is used to determine whether a symbol is defined. */ | |
05bdb37e | 1453 | S_SET_SEGMENT (symp, final_seg); |
252b5132 | 1454 | |
252b5132 | 1455 | /* Don't worry if we can't resolve an expr_section symbol. */ |
6386f3a7 | 1456 | if (finalize_syms) |
252b5132 RH |
1457 | { |
1458 | if (resolved) | |
1459 | symp->sy_resolved = 1; | |
1460 | else if (S_GET_SEGMENT (symp) != expr_section) | |
1461 | { | |
0e389e77 | 1462 | as_bad (_("can't resolve value for symbol `%s'"), |
7c743825 | 1463 | S_GET_NAME (symp)); |
252b5132 RH |
1464 | symp->sy_resolved = 1; |
1465 | } | |
1466 | } | |
1467 | ||
1468 | return final_val; | |
1469 | } | |
1470 | ||
5a49b8ac | 1471 | static void resolve_local_symbol (const char *, void *); |
49309057 ILT |
1472 | |
1473 | /* A static function passed to hash_traverse. */ | |
1474 | ||
1475 | static void | |
5a49b8ac | 1476 | resolve_local_symbol (const char *key ATTRIBUTE_UNUSED, void *value) |
49309057 ILT |
1477 | { |
1478 | if (value != NULL) | |
1e9cc1c2 | 1479 | resolve_symbol_value ((symbolS *) value); |
49309057 ILT |
1480 | } |
1481 | ||
49309057 ILT |
1482 | /* Resolve all local symbols. */ |
1483 | ||
1484 | void | |
74937d39 | 1485 | resolve_local_symbol_values (void) |
49309057 | 1486 | { |
49309057 | 1487 | hash_traverse (local_hash, resolve_local_symbol); |
49309057 ILT |
1488 | } |
1489 | ||
9497f5ac NC |
1490 | /* Obtain the current value of a symbol without changing any |
1491 | sub-expressions used. */ | |
1492 | ||
1493 | int | |
2e1e12b1 | 1494 | snapshot_symbol (symbolS **symbolPP, valueT *valueP, segT *segP, fragS **fragPP) |
9497f5ac | 1495 | { |
2e1e12b1 JB |
1496 | symbolS *symbolP = *symbolPP; |
1497 | ||
9497f5ac NC |
1498 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
1499 | { | |
1500 | struct local_symbol *locsym = (struct local_symbol *) symbolP; | |
1501 | ||
1502 | *valueP = locsym->lsy_value; | |
1503 | *segP = locsym->lsy_section; | |
1504 | *fragPP = local_symbol_get_frag (locsym); | |
1505 | } | |
1506 | else | |
1507 | { | |
91d6fa6a | 1508 | expressionS exp = symbolP->sy_value; |
9497f5ac | 1509 | |
91d6fa6a | 1510 | if (!symbolP->sy_resolved && exp.X_op != O_illegal) |
9497f5ac NC |
1511 | { |
1512 | int resolved; | |
1513 | ||
1514 | if (symbolP->sy_resolving) | |
1515 | return 0; | |
1516 | symbolP->sy_resolving = 1; | |
91d6fa6a | 1517 | resolved = resolve_expression (&exp); |
9497f5ac NC |
1518 | symbolP->sy_resolving = 0; |
1519 | if (!resolved) | |
1520 | return 0; | |
1521 | ||
91d6fa6a | 1522 | switch (exp.X_op) |
9497f5ac NC |
1523 | { |
1524 | case O_constant: | |
1525 | case O_register: | |
2e1e12b1 | 1526 | if (!symbol_equated_p (symbolP)) |
9497f5ac NC |
1527 | break; |
1528 | /* Fall thru. */ | |
1529 | case O_symbol: | |
1530 | case O_symbol_rva: | |
91d6fa6a | 1531 | symbolP = exp.X_add_symbol; |
9497f5ac NC |
1532 | break; |
1533 | default: | |
1534 | return 0; | |
1535 | } | |
1536 | } | |
1537 | ||
d96eea71 | 1538 | *symbolPP = symbolP; |
91d6fa6a | 1539 | *valueP = exp.X_add_number; |
9497f5ac NC |
1540 | *segP = symbolP->bsym->section; |
1541 | *fragPP = symbolP->sy_frag; | |
1542 | ||
1543 | if (*segP == expr_section) | |
91d6fa6a | 1544 | switch (exp.X_op) |
9497f5ac NC |
1545 | { |
1546 | case O_constant: *segP = absolute_section; break; | |
1547 | case O_register: *segP = reg_section; break; | |
1548 | default: break; | |
1549 | } | |
1550 | } | |
1551 | ||
1552 | return 1; | |
1553 | } | |
1554 | ||
252b5132 RH |
1555 | /* Dollar labels look like a number followed by a dollar sign. Eg, "42$". |
1556 | They are *really* local. That is, they go out of scope whenever we see a | |
1557 | label that isn't local. Also, like fb labels, there can be multiple | |
1558 | instances of a dollar label. Therefor, we name encode each instance with | |
1559 | the instance number, keep a list of defined symbols separate from the real | |
1560 | symbol table, and we treat these buggers as a sparse array. */ | |
1561 | ||
1562 | static long *dollar_labels; | |
1563 | static long *dollar_label_instances; | |
1564 | static char *dollar_label_defines; | |
1565 | static unsigned long dollar_label_count; | |
1566 | static unsigned long dollar_label_max; | |
1567 | ||
7c743825 | 1568 | int |
74937d39 | 1569 | dollar_label_defined (long label) |
252b5132 RH |
1570 | { |
1571 | long *i; | |
1572 | ||
1573 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1574 | ||
1575 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1576 | if (*i == label) | |
1577 | return dollar_label_defines[i - dollar_labels]; | |
1578 | ||
7c743825 | 1579 | /* If we get here, label isn't defined. */ |
252b5132 | 1580 | return 0; |
7c743825 | 1581 | } |
252b5132 RH |
1582 | |
1583 | static long | |
74937d39 | 1584 | dollar_label_instance (long label) |
252b5132 RH |
1585 | { |
1586 | long *i; | |
1587 | ||
1588 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1589 | ||
1590 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1591 | if (*i == label) | |
1592 | return (dollar_label_instances[i - dollar_labels]); | |
1593 | ||
7c743825 KH |
1594 | /* If we get here, we haven't seen the label before. |
1595 | Therefore its instance count is zero. */ | |
252b5132 RH |
1596 | return 0; |
1597 | } | |
1598 | ||
7c743825 | 1599 | void |
74937d39 | 1600 | dollar_label_clear (void) |
252b5132 RH |
1601 | { |
1602 | memset (dollar_label_defines, '\0', (unsigned int) dollar_label_count); | |
1603 | } | |
1604 | ||
1605 | #define DOLLAR_LABEL_BUMP_BY 10 | |
1606 | ||
7c743825 | 1607 | void |
74937d39 | 1608 | define_dollar_label (long label) |
252b5132 RH |
1609 | { |
1610 | long *i; | |
1611 | ||
1612 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1613 | if (*i == label) | |
1614 | { | |
1615 | ++dollar_label_instances[i - dollar_labels]; | |
1616 | dollar_label_defines[i - dollar_labels] = 1; | |
1617 | return; | |
1618 | } | |
1619 | ||
7c743825 | 1620 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1621 | |
1622 | if (dollar_labels == NULL) | |
1623 | { | |
1624 | dollar_labels = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long)); | |
1625 | dollar_label_instances = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long)); | |
1e9cc1c2 | 1626 | dollar_label_defines = (char *) xmalloc (DOLLAR_LABEL_BUMP_BY); |
252b5132 RH |
1627 | dollar_label_max = DOLLAR_LABEL_BUMP_BY; |
1628 | dollar_label_count = 0; | |
1629 | } | |
1630 | else if (dollar_label_count == dollar_label_max) | |
1631 | { | |
1632 | dollar_label_max += DOLLAR_LABEL_BUMP_BY; | |
1633 | dollar_labels = (long *) xrealloc ((char *) dollar_labels, | |
1634 | dollar_label_max * sizeof (long)); | |
1635 | dollar_label_instances = (long *) xrealloc ((char *) dollar_label_instances, | |
1636 | dollar_label_max * sizeof (long)); | |
1e9cc1c2 | 1637 | dollar_label_defines = (char *) xrealloc (dollar_label_defines, dollar_label_max); |
7c743825 | 1638 | } /* if we needed to grow */ |
252b5132 RH |
1639 | |
1640 | dollar_labels[dollar_label_count] = label; | |
1641 | dollar_label_instances[dollar_label_count] = 1; | |
1642 | dollar_label_defines[dollar_label_count] = 1; | |
1643 | ++dollar_label_count; | |
1644 | } | |
1645 | ||
7c743825 KH |
1646 | /* Caller must copy returned name: we re-use the area for the next name. |
1647 | ||
1648 | The mth occurence of label n: is turned into the symbol "Ln^Am" | |
1649 | where n is the label number and m is the instance number. "L" makes | |
1650 | it a label discarded unless debugging and "^A"('\1') ensures no | |
1651 | ordinary symbol SHOULD get the same name as a local label | |
1652 | symbol. The first "4:" is "L4^A1" - the m numbers begin at 1. | |
1653 | ||
1654 | fb labels get the same treatment, except that ^B is used in place | |
1655 | of ^A. */ | |
1656 | ||
1657 | char * /* Return local label name. */ | |
74937d39 KH |
1658 | dollar_label_name (register long n, /* we just saw "n$:" : n a number. */ |
1659 | register int augend /* 0 for current instance, 1 for new instance. */) | |
252b5132 RH |
1660 | { |
1661 | long i; | |
7c743825 | 1662 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 RH |
1663 | static char symbol_name_build[24]; |
1664 | register char *p; | |
1665 | register char *q; | |
7c743825 | 1666 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1667 | |
1668 | know (n >= 0); | |
1669 | know (augend == 0 || augend == 1); | |
1670 | p = symbol_name_build; | |
f84dd1f0 NC |
1671 | #ifdef LOCAL_LABEL_PREFIX |
1672 | *p++ = LOCAL_LABEL_PREFIX; | |
1673 | #endif | |
252b5132 RH |
1674 | *p++ = 'L'; |
1675 | ||
7c743825 KH |
1676 | /* Next code just does sprintf( {}, "%d", n); */ |
1677 | /* Label number. */ | |
252b5132 RH |
1678 | q = symbol_name_temporary; |
1679 | for (*q++ = 0, i = n; i; ++q) | |
1680 | { | |
1681 | *q = i % 10 + '0'; | |
1682 | i /= 10; | |
1683 | } | |
1684 | while ((*p = *--q) != '\0') | |
1685 | ++p; | |
1686 | ||
aa257fcd | 1687 | *p++ = DOLLAR_LABEL_CHAR; /* ^A */ |
252b5132 | 1688 | |
7c743825 | 1689 | /* Instance number. */ |
252b5132 RH |
1690 | q = symbol_name_temporary; |
1691 | for (*q++ = 0, i = dollar_label_instance (n) + augend; i; ++q) | |
1692 | { | |
1693 | *q = i % 10 + '0'; | |
1694 | i /= 10; | |
1695 | } | |
1696 | while ((*p++ = *--q) != '\0');; | |
1697 | ||
7c743825 | 1698 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 RH |
1699 | return symbol_name_build; |
1700 | } | |
1701 | ||
47eebc20 | 1702 | /* Somebody else's idea of local labels. They are made by "n:" where n |
7c743825 KH |
1703 | is any decimal digit. Refer to them with |
1704 | "nb" for previous (backward) n: | |
1705 | or "nf" for next (forward) n:. | |
1706 | ||
1707 | We do a little better and let n be any number, not just a single digit, but | |
1708 | since the other guy's assembler only does ten, we treat the first ten | |
1709 | specially. | |
1710 | ||
1711 | Like someone else's assembler, we have one set of local label counters for | |
1712 | entire assembly, not one set per (sub)segment like in most assemblers. This | |
1713 | implies that one can refer to a label in another segment, and indeed some | |
1714 | crufty compilers have done just that. | |
1715 | ||
1716 | Since there could be a LOT of these things, treat them as a sparse | |
1717 | array. */ | |
252b5132 RH |
1718 | |
1719 | #define FB_LABEL_SPECIAL (10) | |
1720 | ||
1721 | static long fb_low_counter[FB_LABEL_SPECIAL]; | |
1722 | static long *fb_labels; | |
1723 | static long *fb_label_instances; | |
1724 | static long fb_label_count; | |
1725 | static long fb_label_max; | |
1726 | ||
7c743825 | 1727 | /* This must be more than FB_LABEL_SPECIAL. */ |
252b5132 RH |
1728 | #define FB_LABEL_BUMP_BY (FB_LABEL_SPECIAL + 6) |
1729 | ||
7c743825 | 1730 | static void |
74937d39 | 1731 | fb_label_init (void) |
252b5132 RH |
1732 | { |
1733 | memset ((void *) fb_low_counter, '\0', sizeof (fb_low_counter)); | |
7c743825 | 1734 | } |
252b5132 | 1735 | |
7c743825 KH |
1736 | /* Add one to the instance number of this fb label. */ |
1737 | ||
1738 | void | |
74937d39 | 1739 | fb_label_instance_inc (long label) |
252b5132 RH |
1740 | { |
1741 | long *i; | |
1742 | ||
1743 | if (label < FB_LABEL_SPECIAL) | |
1744 | { | |
1745 | ++fb_low_counter[label]; | |
1746 | return; | |
1747 | } | |
1748 | ||
1749 | if (fb_labels != NULL) | |
1750 | { | |
1751 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1752 | i < fb_labels + fb_label_count; ++i) | |
1753 | { | |
1754 | if (*i == label) | |
1755 | { | |
1756 | ++fb_label_instances[i - fb_labels]; | |
1757 | return; | |
7c743825 KH |
1758 | } /* if we find it */ |
1759 | } /* for each existing label */ | |
252b5132 RH |
1760 | } |
1761 | ||
7c743825 | 1762 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1763 | |
1764 | if (fb_labels == NULL) | |
1765 | { | |
1766 | fb_labels = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long)); | |
1767 | fb_label_instances = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long)); | |
1768 | fb_label_max = FB_LABEL_BUMP_BY; | |
1769 | fb_label_count = FB_LABEL_SPECIAL; | |
1770 | ||
1771 | } | |
1772 | else if (fb_label_count == fb_label_max) | |
1773 | { | |
1774 | fb_label_max += FB_LABEL_BUMP_BY; | |
1775 | fb_labels = (long *) xrealloc ((char *) fb_labels, | |
1776 | fb_label_max * sizeof (long)); | |
1777 | fb_label_instances = (long *) xrealloc ((char *) fb_label_instances, | |
1778 | fb_label_max * sizeof (long)); | |
7c743825 | 1779 | } /* if we needed to grow */ |
252b5132 RH |
1780 | |
1781 | fb_labels[fb_label_count] = label; | |
1782 | fb_label_instances[fb_label_count] = 1; | |
1783 | ++fb_label_count; | |
1784 | } | |
1785 | ||
7c743825 | 1786 | static long |
74937d39 | 1787 | fb_label_instance (long label) |
252b5132 RH |
1788 | { |
1789 | long *i; | |
1790 | ||
1791 | if (label < FB_LABEL_SPECIAL) | |
1792 | { | |
1793 | return (fb_low_counter[label]); | |
1794 | } | |
1795 | ||
1796 | if (fb_labels != NULL) | |
1797 | { | |
1798 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1799 | i < fb_labels + fb_label_count; ++i) | |
1800 | { | |
1801 | if (*i == label) | |
1802 | { | |
1803 | return (fb_label_instances[i - fb_labels]); | |
7c743825 KH |
1804 | } /* if we find it */ |
1805 | } /* for each existing label */ | |
252b5132 RH |
1806 | } |
1807 | ||
1808 | /* We didn't find the label, so this must be a reference to the | |
1809 | first instance. */ | |
1810 | return 0; | |
1811 | } | |
1812 | ||
7c743825 KH |
1813 | /* Caller must copy returned name: we re-use the area for the next name. |
1814 | ||
1815 | The mth occurence of label n: is turned into the symbol "Ln^Bm" | |
1816 | where n is the label number and m is the instance number. "L" makes | |
1817 | it a label discarded unless debugging and "^B"('\2') ensures no | |
1818 | ordinary symbol SHOULD get the same name as a local label | |
1819 | symbol. The first "4:" is "L4^B1" - the m numbers begin at 1. | |
1820 | ||
1821 | dollar labels get the same treatment, except that ^A is used in | |
1822 | place of ^B. */ | |
1823 | ||
1824 | char * /* Return local label name. */ | |
74937d39 KH |
1825 | fb_label_name (long n, /* We just saw "n:", "nf" or "nb" : n a number. */ |
1826 | long augend /* 0 for nb, 1 for n:, nf. */) | |
252b5132 RH |
1827 | { |
1828 | long i; | |
7c743825 | 1829 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 RH |
1830 | static char symbol_name_build[24]; |
1831 | register char *p; | |
1832 | register char *q; | |
7c743825 | 1833 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1834 | |
1835 | know (n >= 0); | |
a76903bf | 1836 | #ifdef TC_MMIX |
71ba24a1 | 1837 | know ((unsigned long) augend <= 2 /* See mmix_fb_label. */); |
a76903bf | 1838 | #else |
71ba24a1 | 1839 | know ((unsigned long) augend <= 1); |
a76903bf | 1840 | #endif |
252b5132 | 1841 | p = symbol_name_build; |
aa257fcd NC |
1842 | #ifdef LOCAL_LABEL_PREFIX |
1843 | *p++ = LOCAL_LABEL_PREFIX; | |
1844 | #endif | |
252b5132 RH |
1845 | *p++ = 'L'; |
1846 | ||
7c743825 KH |
1847 | /* Next code just does sprintf( {}, "%d", n); */ |
1848 | /* Label number. */ | |
252b5132 RH |
1849 | q = symbol_name_temporary; |
1850 | for (*q++ = 0, i = n; i; ++q) | |
1851 | { | |
1852 | *q = i % 10 + '0'; | |
1853 | i /= 10; | |
1854 | } | |
1855 | while ((*p = *--q) != '\0') | |
1856 | ++p; | |
1857 | ||
aa257fcd | 1858 | *p++ = LOCAL_LABEL_CHAR; /* ^B */ |
252b5132 | 1859 | |
7c743825 | 1860 | /* Instance number. */ |
252b5132 RH |
1861 | q = symbol_name_temporary; |
1862 | for (*q++ = 0, i = fb_label_instance (n) + augend; i; ++q) | |
1863 | { | |
1864 | *q = i % 10 + '0'; | |
1865 | i /= 10; | |
1866 | } | |
1867 | while ((*p++ = *--q) != '\0');; | |
1868 | ||
7c743825 | 1869 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 | 1870 | return (symbol_name_build); |
7c743825 | 1871 | } |
252b5132 | 1872 | |
7c743825 KH |
1873 | /* Decode name that may have been generated by foo_label_name() above. |
1874 | If the name wasn't generated by foo_label_name(), then return it | |
1875 | unaltered. This is used for error messages. */ | |
252b5132 RH |
1876 | |
1877 | char * | |
74937d39 | 1878 | decode_local_label_name (char *s) |
252b5132 RH |
1879 | { |
1880 | char *p; | |
1881 | char *symbol_decode; | |
1882 | int label_number; | |
1883 | int instance_number; | |
1884 | char *type; | |
d95767bf | 1885 | const char *message_format; |
91d6fa6a | 1886 | int lindex = 0; |
43ad3147 | 1887 | |
aa257fcd | 1888 | #ifdef LOCAL_LABEL_PREFIX |
91d6fa6a NC |
1889 | if (s[lindex] == LOCAL_LABEL_PREFIX) |
1890 | ++lindex; | |
aa257fcd | 1891 | #endif |
43ad3147 | 1892 | |
91d6fa6a | 1893 | if (s[lindex] != 'L') |
252b5132 RH |
1894 | return s; |
1895 | ||
91d6fa6a | 1896 | for (label_number = 0, p = s + lindex + 1; ISDIGIT (*p); ++p) |
252b5132 RH |
1897 | label_number = (10 * label_number) + *p - '0'; |
1898 | ||
aa257fcd | 1899 | if (*p == DOLLAR_LABEL_CHAR) |
252b5132 | 1900 | type = "dollar"; |
aa257fcd | 1901 | else if (*p == LOCAL_LABEL_CHAR) |
252b5132 RH |
1902 | type = "fb"; |
1903 | else | |
1904 | return s; | |
1905 | ||
3882b010 | 1906 | for (instance_number = 0, p++; ISDIGIT (*p); ++p) |
252b5132 RH |
1907 | instance_number = (10 * instance_number) + *p - '0'; |
1908 | ||
d95767bf | 1909 | message_format = _("\"%d\" (instance number %d of a %s label)"); |
1e9cc1c2 | 1910 | symbol_decode = (char *) obstack_alloc (¬es, strlen (message_format) + 30); |
252b5132 RH |
1911 | sprintf (symbol_decode, message_format, label_number, instance_number, type); |
1912 | ||
1913 | return symbol_decode; | |
1914 | } | |
1915 | ||
1916 | /* Get the value of a symbol. */ | |
1917 | ||
1918 | valueT | |
74937d39 | 1919 | S_GET_VALUE (symbolS *s) |
252b5132 | 1920 | { |
49309057 | 1921 | if (LOCAL_SYMBOL_CHECK (s)) |
ac62c346 | 1922 | return resolve_symbol_value (s); |
49309057 | 1923 | |
ac62c346 | 1924 | if (!s->sy_resolved) |
e46d99eb | 1925 | { |
6386f3a7 AM |
1926 | valueT val = resolve_symbol_value (s); |
1927 | if (!finalize_syms) | |
e46d99eb AM |
1928 | return val; |
1929 | } | |
06e77878 AO |
1930 | if (S_IS_WEAKREFR (s)) |
1931 | return S_GET_VALUE (s->sy_value.X_add_symbol); | |
1932 | ||
252b5132 RH |
1933 | if (s->sy_value.X_op != O_constant) |
1934 | { | |
252b5132 RH |
1935 | if (! s->sy_resolved |
1936 | || s->sy_value.X_op != O_symbol | |
1937 | || (S_IS_DEFINED (s) && ! S_IS_COMMON (s))) | |
0e389e77 | 1938 | as_bad (_("attempt to get value of unresolved symbol `%s'"), |
252b5132 | 1939 | S_GET_NAME (s)); |
252b5132 RH |
1940 | } |
1941 | return (valueT) s->sy_value.X_add_number; | |
1942 | } | |
1943 | ||
1944 | /* Set the value of a symbol. */ | |
1945 | ||
1946 | void | |
74937d39 | 1947 | S_SET_VALUE (symbolS *s, valueT val) |
252b5132 | 1948 | { |
49309057 ILT |
1949 | if (LOCAL_SYMBOL_CHECK (s)) |
1950 | { | |
bd780143 | 1951 | ((struct local_symbol *) s)->lsy_value = val; |
49309057 ILT |
1952 | return; |
1953 | } | |
1954 | ||
252b5132 RH |
1955 | s->sy_value.X_op = O_constant; |
1956 | s->sy_value.X_add_number = (offsetT) val; | |
1957 | s->sy_value.X_unsigned = 0; | |
06e77878 | 1958 | S_CLEAR_WEAKREFR (s); |
252b5132 RH |
1959 | } |
1960 | ||
1961 | void | |
74937d39 | 1962 | copy_symbol_attributes (symbolS *dest, symbolS *src) |
252b5132 | 1963 | { |
49309057 | 1964 | if (LOCAL_SYMBOL_CHECK (dest)) |
7f2f689c | 1965 | dest = local_symbol_convert ((struct local_symbol *) dest); |
49309057 | 1966 | if (LOCAL_SYMBOL_CHECK (src)) |
7f2f689c | 1967 | src = local_symbol_convert ((struct local_symbol *) src); |
49309057 | 1968 | |
252b5132 RH |
1969 | /* In an expression, transfer the settings of these flags. |
1970 | The user can override later, of course. */ | |
ad04f5ce L |
1971 | #define COPIED_SYMFLAGS (BSF_FUNCTION | BSF_OBJECT \ |
1972 | | BSF_GNU_INDIRECT_FUNCTION) | |
252b5132 | 1973 | dest->bsym->flags |= src->bsym->flags & COPIED_SYMFLAGS; |
252b5132 RH |
1974 | |
1975 | #ifdef OBJ_COPY_SYMBOL_ATTRIBUTES | |
1976 | OBJ_COPY_SYMBOL_ATTRIBUTES (dest, src); | |
1977 | #endif | |
794ba86a DJ |
1978 | |
1979 | #ifdef TC_COPY_SYMBOL_ATTRIBUTES | |
1980 | TC_COPY_SYMBOL_ATTRIBUTES (dest, src); | |
1981 | #endif | |
252b5132 RH |
1982 | } |
1983 | ||
252b5132 | 1984 | int |
74937d39 | 1985 | S_IS_FUNCTION (symbolS *s) |
252b5132 | 1986 | { |
49309057 ILT |
1987 | flagword flags; |
1988 | ||
1989 | if (LOCAL_SYMBOL_CHECK (s)) | |
1990 | return 0; | |
1991 | ||
1992 | flags = s->bsym->flags; | |
252b5132 RH |
1993 | |
1994 | return (flags & BSF_FUNCTION) != 0; | |
1995 | } | |
1996 | ||
1997 | int | |
74937d39 | 1998 | S_IS_EXTERNAL (symbolS *s) |
252b5132 | 1999 | { |
49309057 ILT |
2000 | flagword flags; |
2001 | ||
2002 | if (LOCAL_SYMBOL_CHECK (s)) | |
2003 | return 0; | |
2004 | ||
2005 | flags = s->bsym->flags; | |
252b5132 | 2006 | |
7c743825 | 2007 | /* Sanity check. */ |
252b5132 RH |
2008 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
2009 | abort (); | |
2010 | ||
2011 | return (flags & BSF_GLOBAL) != 0; | |
2012 | } | |
2013 | ||
2014 | int | |
74937d39 | 2015 | S_IS_WEAK (symbolS *s) |
252b5132 | 2016 | { |
49309057 ILT |
2017 | if (LOCAL_SYMBOL_CHECK (s)) |
2018 | return 0; | |
06e77878 AO |
2019 | /* Conceptually, a weakrefr is weak if the referenced symbol is. We |
2020 | could probably handle a WEAKREFR as always weak though. E.g., if | |
2021 | the referenced symbol has lost its weak status, there's no reason | |
2022 | to keep handling the weakrefr as if it was weak. */ | |
2023 | if (S_IS_WEAKREFR (s)) | |
2024 | return S_IS_WEAK (s->sy_value.X_add_symbol); | |
252b5132 RH |
2025 | return (s->bsym->flags & BSF_WEAK) != 0; |
2026 | } | |
2027 | ||
06e77878 AO |
2028 | int |
2029 | S_IS_WEAKREFR (symbolS *s) | |
2030 | { | |
2031 | if (LOCAL_SYMBOL_CHECK (s)) | |
2032 | return 0; | |
2033 | return s->sy_weakrefr != 0; | |
2034 | } | |
2035 | ||
2036 | int | |
2037 | S_IS_WEAKREFD (symbolS *s) | |
2038 | { | |
2039 | if (LOCAL_SYMBOL_CHECK (s)) | |
2040 | return 0; | |
2041 | return s->sy_weakrefd != 0; | |
2042 | } | |
2043 | ||
252b5132 | 2044 | int |
74937d39 | 2045 | S_IS_COMMON (symbolS *s) |
252b5132 | 2046 | { |
49309057 ILT |
2047 | if (LOCAL_SYMBOL_CHECK (s)) |
2048 | return 0; | |
252b5132 RH |
2049 | return bfd_is_com_section (s->bsym->section); |
2050 | } | |
2051 | ||
2052 | int | |
74937d39 | 2053 | S_IS_DEFINED (symbolS *s) |
252b5132 | 2054 | { |
49309057 ILT |
2055 | if (LOCAL_SYMBOL_CHECK (s)) |
2056 | return ((struct local_symbol *) s)->lsy_section != undefined_section; | |
252b5132 RH |
2057 | return s->bsym->section != undefined_section; |
2058 | } | |
2059 | ||
a161fe53 AM |
2060 | |
2061 | #ifndef EXTERN_FORCE_RELOC | |
2062 | #define EXTERN_FORCE_RELOC IS_ELF | |
2063 | #endif | |
2064 | ||
2065 | /* Return true for symbols that should not be reduced to section | |
2066 | symbols or eliminated from expressions, because they may be | |
2067 | overridden by the linker. */ | |
2068 | int | |
74937d39 | 2069 | S_FORCE_RELOC (symbolS *s, int strict) |
a161fe53 AM |
2070 | { |
2071 | if (LOCAL_SYMBOL_CHECK (s)) | |
2072 | return ((struct local_symbol *) s)->lsy_section == undefined_section; | |
2073 | ||
ae6063d4 AM |
2074 | return ((strict |
2075 | && ((s->bsym->flags & BSF_WEAK) != 0 | |
2076 | || (EXTERN_FORCE_RELOC | |
2077 | && (s->bsym->flags & BSF_GLOBAL) != 0))) | |
c969da64 | 2078 | || (s->bsym->flags & BSF_GNU_INDIRECT_FUNCTION) != 0 |
a161fe53 AM |
2079 | || s->bsym->section == undefined_section |
2080 | || bfd_is_com_section (s->bsym->section)); | |
2081 | } | |
2082 | ||
252b5132 | 2083 | int |
74937d39 | 2084 | S_IS_DEBUG (symbolS *s) |
252b5132 | 2085 | { |
49309057 ILT |
2086 | if (LOCAL_SYMBOL_CHECK (s)) |
2087 | return 0; | |
252b5132 RH |
2088 | if (s->bsym->flags & BSF_DEBUGGING) |
2089 | return 1; | |
2090 | return 0; | |
2091 | } | |
2092 | ||
2093 | int | |
74937d39 | 2094 | S_IS_LOCAL (symbolS *s) |
252b5132 | 2095 | { |
49309057 | 2096 | flagword flags; |
252b5132 RH |
2097 | const char *name; |
2098 | ||
49309057 ILT |
2099 | if (LOCAL_SYMBOL_CHECK (s)) |
2100 | return 1; | |
2101 | ||
2102 | flags = s->bsym->flags; | |
2103 | ||
7c743825 | 2104 | /* Sanity check. */ |
252b5132 RH |
2105 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
2106 | abort (); | |
2107 | ||
2108 | if (bfd_get_section (s->bsym) == reg_section) | |
2109 | return 1; | |
2110 | ||
2111 | if (flag_strip_local_absolute | |
bb82af9f NC |
2112 | /* Keep BSF_FILE symbols in order to allow debuggers to identify |
2113 | the source file even when the object file is stripped. */ | |
2114 | && (flags & (BSF_GLOBAL | BSF_FILE)) == 0 | |
252b5132 RH |
2115 | && bfd_get_section (s->bsym) == absolute_section) |
2116 | return 1; | |
2117 | ||
2118 | name = S_GET_NAME (s); | |
2119 | return (name != NULL | |
2120 | && ! S_IS_DEBUG (s) | |
aa257fcd NC |
2121 | && (strchr (name, DOLLAR_LABEL_CHAR) |
2122 | || strchr (name, LOCAL_LABEL_CHAR) | |
252b5132 RH |
2123 | || (! flag_keep_locals |
2124 | && (bfd_is_local_label (stdoutput, s->bsym) | |
2125 | || (flag_mri | |
2126 | && name[0] == '?' | |
2127 | && name[1] == '?'))))); | |
2128 | } | |
2129 | ||
252b5132 | 2130 | int |
74937d39 | 2131 | S_IS_STABD (symbolS *s) |
252b5132 RH |
2132 | { |
2133 | return S_GET_NAME (s) == 0; | |
2134 | } | |
2135 | ||
9497f5ac NC |
2136 | int |
2137 | S_IS_VOLATILE (const symbolS *s) | |
2138 | { | |
2139 | if (LOCAL_SYMBOL_CHECK (s)) | |
2140 | return 0; | |
2141 | return s->sy_volatile; | |
2142 | } | |
2143 | ||
2144 | int | |
2145 | S_IS_FORWARD_REF (const symbolS *s) | |
2146 | { | |
2147 | if (LOCAL_SYMBOL_CHECK (s)) | |
2148 | return 0; | |
2149 | return s->sy_forward_ref; | |
2150 | } | |
2151 | ||
9758f3fc | 2152 | const char * |
74937d39 | 2153 | S_GET_NAME (symbolS *s) |
252b5132 | 2154 | { |
49309057 ILT |
2155 | if (LOCAL_SYMBOL_CHECK (s)) |
2156 | return ((struct local_symbol *) s)->lsy_name; | |
252b5132 RH |
2157 | return s->bsym->name; |
2158 | } | |
2159 | ||
2160 | segT | |
74937d39 | 2161 | S_GET_SEGMENT (symbolS *s) |
252b5132 | 2162 | { |
49309057 ILT |
2163 | if (LOCAL_SYMBOL_CHECK (s)) |
2164 | return ((struct local_symbol *) s)->lsy_section; | |
252b5132 RH |
2165 | return s->bsym->section; |
2166 | } | |
2167 | ||
2168 | void | |
74937d39 | 2169 | S_SET_SEGMENT (symbolS *s, segT seg) |
252b5132 RH |
2170 | { |
2171 | /* Don't reassign section symbols. The direct reason is to prevent seg | |
2172 | faults assigning back to const global symbols such as *ABS*, but it | |
2173 | shouldn't happen anyway. */ | |
2174 | ||
49309057 ILT |
2175 | if (LOCAL_SYMBOL_CHECK (s)) |
2176 | { | |
2177 | if (seg == reg_section) | |
2178 | s = local_symbol_convert ((struct local_symbol *) s); | |
2179 | else | |
2180 | { | |
2181 | ((struct local_symbol *) s)->lsy_section = seg; | |
2182 | return; | |
2183 | } | |
2184 | } | |
2185 | ||
252b5132 RH |
2186 | if (s->bsym->flags & BSF_SECTION_SYM) |
2187 | { | |
2188 | if (s->bsym->section != seg) | |
7c743825 | 2189 | abort (); |
252b5132 RH |
2190 | } |
2191 | else | |
2192 | s->bsym->section = seg; | |
2193 | } | |
2194 | ||
2195 | void | |
74937d39 | 2196 | S_SET_EXTERNAL (symbolS *s) |
252b5132 | 2197 | { |
49309057 ILT |
2198 | if (LOCAL_SYMBOL_CHECK (s)) |
2199 | s = local_symbol_convert ((struct local_symbol *) s); | |
252b5132 RH |
2200 | if ((s->bsym->flags & BSF_WEAK) != 0) |
2201 | { | |
2202 | /* Let .weak override .global. */ | |
2203 | return; | |
2204 | } | |
4d7c34bf NC |
2205 | if (s->bsym->flags & BSF_SECTION_SYM) |
2206 | { | |
2207 | char * file; | |
2208 | unsigned int line; | |
d1a6c242 | 2209 | |
4d7c34bf NC |
2210 | /* Do not reassign section symbols. */ |
2211 | as_where (& file, & line); | |
2212 | as_warn_where (file, line, | |
0e389e77 | 2213 | _("section symbols are already global")); |
4d7c34bf NC |
2214 | return; |
2215 | } | |
97c4f2d9 | 2216 | #ifndef TC_GLOBAL_REGISTER_SYMBOL_OK |
d0548f34 L |
2217 | if (S_GET_SEGMENT (s) == reg_section) |
2218 | { | |
2219 | as_bad ("can't make register symbol `%s' global", | |
2220 | S_GET_NAME (s)); | |
2221 | return; | |
2222 | } | |
97c4f2d9 | 2223 | #endif |
252b5132 | 2224 | s->bsym->flags |= BSF_GLOBAL; |
7c743825 | 2225 | s->bsym->flags &= ~(BSF_LOCAL | BSF_WEAK); |
977cdf5a | 2226 | |
22ba0981 | 2227 | #ifdef TE_PE |
977cdf5a NC |
2228 | if (! an_external_name && S_GET_NAME(s)[0] != '.') |
2229 | an_external_name = S_GET_NAME (s); | |
2230 | #endif | |
252b5132 RH |
2231 | } |
2232 | ||
2233 | void | |
74937d39 | 2234 | S_CLEAR_EXTERNAL (symbolS *s) |
252b5132 | 2235 | { |
49309057 ILT |
2236 | if (LOCAL_SYMBOL_CHECK (s)) |
2237 | return; | |
252b5132 RH |
2238 | if ((s->bsym->flags & BSF_WEAK) != 0) |
2239 | { | |
2240 | /* Let .weak override. */ | |
2241 | return; | |
2242 | } | |
2243 | s->bsym->flags |= BSF_LOCAL; | |
7c743825 | 2244 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_WEAK); |
252b5132 RH |
2245 | } |
2246 | ||
2247 | void | |
74937d39 | 2248 | S_SET_WEAK (symbolS *s) |
252b5132 | 2249 | { |
49309057 ILT |
2250 | if (LOCAL_SYMBOL_CHECK (s)) |
2251 | s = local_symbol_convert ((struct local_symbol *) s); | |
06e77878 AO |
2252 | #ifdef obj_set_weak_hook |
2253 | obj_set_weak_hook (s); | |
2254 | #endif | |
252b5132 | 2255 | s->bsym->flags |= BSF_WEAK; |
7c743825 | 2256 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_LOCAL); |
252b5132 RH |
2257 | } |
2258 | ||
06e77878 AO |
2259 | void |
2260 | S_SET_WEAKREFR (symbolS *s) | |
2261 | { | |
2262 | if (LOCAL_SYMBOL_CHECK (s)) | |
2263 | s = local_symbol_convert ((struct local_symbol *) s); | |
2264 | s->sy_weakrefr = 1; | |
2265 | /* If the alias was already used, make sure we mark the target as | |
2266 | used as well, otherwise it might be dropped from the symbol | |
2267 | table. This may have unintended side effects if the alias is | |
2268 | later redirected to another symbol, such as keeping the unused | |
2269 | previous target in the symbol table. Since it will be weak, it's | |
2270 | not a big deal. */ | |
2271 | if (s->sy_used) | |
2272 | symbol_mark_used (s->sy_value.X_add_symbol); | |
2273 | } | |
2274 | ||
2275 | void | |
2276 | S_CLEAR_WEAKREFR (symbolS *s) | |
2277 | { | |
2278 | if (LOCAL_SYMBOL_CHECK (s)) | |
2279 | return; | |
2280 | s->sy_weakrefr = 0; | |
2281 | } | |
2282 | ||
2283 | void | |
2284 | S_SET_WEAKREFD (symbolS *s) | |
2285 | { | |
2286 | if (LOCAL_SYMBOL_CHECK (s)) | |
2287 | s = local_symbol_convert ((struct local_symbol *) s); | |
2288 | s->sy_weakrefd = 1; | |
2289 | S_SET_WEAK (s); | |
2290 | } | |
2291 | ||
2292 | void | |
2293 | S_CLEAR_WEAKREFD (symbolS *s) | |
2294 | { | |
2295 | if (LOCAL_SYMBOL_CHECK (s)) | |
2296 | return; | |
2297 | if (s->sy_weakrefd) | |
2298 | { | |
2299 | s->sy_weakrefd = 0; | |
2300 | /* If a weakref target symbol is weak, then it was never | |
2301 | referenced directly before, not even in a .global directive, | |
2302 | so decay it to local. If it remains undefined, it will be | |
2303 | later turned into a global, like any other undefined | |
2304 | symbol. */ | |
2305 | if (s->bsym->flags & BSF_WEAK) | |
2306 | { | |
2307 | #ifdef obj_clear_weak_hook | |
2308 | obj_clear_weak_hook (s); | |
2309 | #endif | |
2310 | s->bsym->flags &= ~BSF_WEAK; | |
2311 | s->bsym->flags |= BSF_LOCAL; | |
2312 | } | |
2313 | } | |
2314 | } | |
2315 | ||
00f7efb6 | 2316 | void |
74937d39 | 2317 | S_SET_THREAD_LOCAL (symbolS *s) |
00f7efb6 JJ |
2318 | { |
2319 | if (LOCAL_SYMBOL_CHECK (s)) | |
2320 | s = local_symbol_convert ((struct local_symbol *) s); | |
2321 | if (bfd_is_com_section (s->bsym->section) | |
2322 | && (s->bsym->flags & BSF_THREAD_LOCAL) != 0) | |
2323 | return; | |
2324 | s->bsym->flags |= BSF_THREAD_LOCAL; | |
2325 | if ((s->bsym->flags & BSF_FUNCTION) != 0) | |
2326 | as_bad (_("Accessing function `%s' as thread-local object"), | |
2327 | S_GET_NAME (s)); | |
2328 | else if (! bfd_is_und_section (s->bsym->section) | |
2329 | && (s->bsym->section->flags & SEC_THREAD_LOCAL) == 0) | |
2330 | as_bad (_("Accessing `%s' as thread-local object"), | |
2331 | S_GET_NAME (s)); | |
2332 | } | |
2333 | ||
252b5132 | 2334 | void |
977cdf5a | 2335 | S_SET_NAME (symbolS *s, const char *name) |
252b5132 | 2336 | { |
49309057 ILT |
2337 | if (LOCAL_SYMBOL_CHECK (s)) |
2338 | { | |
2339 | ((struct local_symbol *) s)->lsy_name = name; | |
2340 | return; | |
2341 | } | |
252b5132 RH |
2342 | s->bsym->name = name; |
2343 | } | |
49309057 | 2344 | |
9497f5ac NC |
2345 | void |
2346 | S_SET_VOLATILE (symbolS *s) | |
2347 | { | |
2348 | if (LOCAL_SYMBOL_CHECK (s)) | |
2349 | s = local_symbol_convert ((struct local_symbol *) s); | |
2350 | s->sy_volatile = 1; | |
2351 | } | |
2352 | ||
92757bc9 JB |
2353 | void |
2354 | S_CLEAR_VOLATILE (symbolS *s) | |
2355 | { | |
2356 | if (!LOCAL_SYMBOL_CHECK (s)) | |
2357 | s->sy_volatile = 0; | |
2358 | } | |
2359 | ||
9497f5ac NC |
2360 | void |
2361 | S_SET_FORWARD_REF (symbolS *s) | |
2362 | { | |
2363 | if (LOCAL_SYMBOL_CHECK (s)) | |
2364 | s = local_symbol_convert ((struct local_symbol *) s); | |
2365 | s->sy_forward_ref = 1; | |
2366 | } | |
2367 | ||
49309057 ILT |
2368 | /* Return the previous symbol in a chain. */ |
2369 | ||
2370 | symbolS * | |
74937d39 | 2371 | symbol_previous (symbolS *s) |
49309057 ILT |
2372 | { |
2373 | if (LOCAL_SYMBOL_CHECK (s)) | |
2374 | abort (); | |
2375 | return s->sy_previous; | |
2376 | } | |
2377 | ||
49309057 ILT |
2378 | /* Return the next symbol in a chain. */ |
2379 | ||
2380 | symbolS * | |
74937d39 | 2381 | symbol_next (symbolS *s) |
49309057 ILT |
2382 | { |
2383 | if (LOCAL_SYMBOL_CHECK (s)) | |
2384 | abort (); | |
2385 | return s->sy_next; | |
2386 | } | |
2387 | ||
2388 | /* Return a pointer to the value of a symbol as an expression. */ | |
2389 | ||
2390 | expressionS * | |
74937d39 | 2391 | symbol_get_value_expression (symbolS *s) |
49309057 ILT |
2392 | { |
2393 | if (LOCAL_SYMBOL_CHECK (s)) | |
2394 | s = local_symbol_convert ((struct local_symbol *) s); | |
2395 | return &s->sy_value; | |
2396 | } | |
2397 | ||
2398 | /* Set the value of a symbol to an expression. */ | |
2399 | ||
2400 | void | |
74937d39 | 2401 | symbol_set_value_expression (symbolS *s, const expressionS *exp) |
49309057 ILT |
2402 | { |
2403 | if (LOCAL_SYMBOL_CHECK (s)) | |
2404 | s = local_symbol_convert ((struct local_symbol *) s); | |
2405 | s->sy_value = *exp; | |
06e77878 | 2406 | S_CLEAR_WEAKREFR (s); |
49309057 ILT |
2407 | } |
2408 | ||
087d837e L |
2409 | /* Return whether 2 symbols are the same. */ |
2410 | ||
2411 | int | |
2412 | symbol_same_p (symbolS *s1, symbolS *s2) | |
2413 | { | |
2414 | if (s1->bsym == NULL | |
2415 | && local_symbol_converted_p ((struct local_symbol *) s1)) | |
2416 | s1 = local_symbol_get_real_symbol ((struct local_symbol *) s1); | |
2417 | if (s2->bsym == NULL | |
2418 | && local_symbol_converted_p ((struct local_symbol *) s2)) | |
2419 | s2 = local_symbol_get_real_symbol ((struct local_symbol *) s2); | |
2420 | return s1 == s2; | |
2421 | } | |
2422 | ||
be95a9c1 AM |
2423 | /* Return a pointer to the X_add_number component of a symbol. */ |
2424 | ||
514d955d | 2425 | offsetT * |
be95a9c1 AM |
2426 | symbol_X_add_number (symbolS *s) |
2427 | { | |
be95a9c1 | 2428 | if (LOCAL_SYMBOL_CHECK (s)) |
514d955d | 2429 | return (offsetT *) &((struct local_symbol *) s)->lsy_value; |
be95a9c1 | 2430 | |
514d955d | 2431 | return &s->sy_value.X_add_number; |
be95a9c1 AM |
2432 | } |
2433 | ||
b7d6ed97 RH |
2434 | /* Set the value of SYM to the current position in the current segment. */ |
2435 | ||
2436 | void | |
74937d39 | 2437 | symbol_set_value_now (symbolS *sym) |
b7d6ed97 RH |
2438 | { |
2439 | S_SET_SEGMENT (sym, now_seg); | |
2440 | S_SET_VALUE (sym, frag_now_fix ()); | |
2441 | symbol_set_frag (sym, frag_now); | |
2442 | } | |
2443 | ||
49309057 ILT |
2444 | /* Set the frag of a symbol. */ |
2445 | ||
2446 | void | |
74937d39 | 2447 | symbol_set_frag (symbolS *s, fragS *f) |
49309057 ILT |
2448 | { |
2449 | if (LOCAL_SYMBOL_CHECK (s)) | |
2450 | { | |
2451 | local_symbol_set_frag ((struct local_symbol *) s, f); | |
2452 | return; | |
2453 | } | |
2454 | s->sy_frag = f; | |
06e77878 | 2455 | S_CLEAR_WEAKREFR (s); |
49309057 ILT |
2456 | } |
2457 | ||
2458 | /* Return the frag of a symbol. */ | |
2459 | ||
2460 | fragS * | |
74937d39 | 2461 | symbol_get_frag (symbolS *s) |
49309057 ILT |
2462 | { |
2463 | if (LOCAL_SYMBOL_CHECK (s)) | |
2464 | return local_symbol_get_frag ((struct local_symbol *) s); | |
2465 | return s->sy_frag; | |
2466 | } | |
2467 | ||
2468 | /* Mark a symbol as having been used. */ | |
2469 | ||
2470 | void | |
74937d39 | 2471 | symbol_mark_used (symbolS *s) |
49309057 ILT |
2472 | { |
2473 | if (LOCAL_SYMBOL_CHECK (s)) | |
2474 | return; | |
2475 | s->sy_used = 1; | |
06e77878 AO |
2476 | if (S_IS_WEAKREFR (s)) |
2477 | symbol_mark_used (s->sy_value.X_add_symbol); | |
49309057 ILT |
2478 | } |
2479 | ||
2480 | /* Clear the mark of whether a symbol has been used. */ | |
2481 | ||
2482 | void | |
74937d39 | 2483 | symbol_clear_used (symbolS *s) |
49309057 ILT |
2484 | { |
2485 | if (LOCAL_SYMBOL_CHECK (s)) | |
2486 | s = local_symbol_convert ((struct local_symbol *) s); | |
2487 | s->sy_used = 0; | |
2488 | } | |
2489 | ||
2490 | /* Return whether a symbol has been used. */ | |
2491 | ||
2492 | int | |
74937d39 | 2493 | symbol_used_p (symbolS *s) |
49309057 ILT |
2494 | { |
2495 | if (LOCAL_SYMBOL_CHECK (s)) | |
2496 | return 1; | |
2497 | return s->sy_used; | |
2498 | } | |
2499 | ||
2500 | /* Mark a symbol as having been used in a reloc. */ | |
2501 | ||
2502 | void | |
74937d39 | 2503 | symbol_mark_used_in_reloc (symbolS *s) |
49309057 ILT |
2504 | { |
2505 | if (LOCAL_SYMBOL_CHECK (s)) | |
2506 | s = local_symbol_convert ((struct local_symbol *) s); | |
2507 | s->sy_used_in_reloc = 1; | |
2508 | } | |
2509 | ||
2510 | /* Clear the mark of whether a symbol has been used in a reloc. */ | |
2511 | ||
2512 | void | |
74937d39 | 2513 | symbol_clear_used_in_reloc (symbolS *s) |
49309057 ILT |
2514 | { |
2515 | if (LOCAL_SYMBOL_CHECK (s)) | |
2516 | return; | |
2517 | s->sy_used_in_reloc = 0; | |
2518 | } | |
2519 | ||
2520 | /* Return whether a symbol has been used in a reloc. */ | |
2521 | ||
2522 | int | |
74937d39 | 2523 | symbol_used_in_reloc_p (symbolS *s) |
49309057 ILT |
2524 | { |
2525 | if (LOCAL_SYMBOL_CHECK (s)) | |
2526 | return 0; | |
2527 | return s->sy_used_in_reloc; | |
2528 | } | |
2529 | ||
2530 | /* Mark a symbol as an MRI common symbol. */ | |
2531 | ||
2532 | void | |
74937d39 | 2533 | symbol_mark_mri_common (symbolS *s) |
49309057 ILT |
2534 | { |
2535 | if (LOCAL_SYMBOL_CHECK (s)) | |
2536 | s = local_symbol_convert ((struct local_symbol *) s); | |
2537 | s->sy_mri_common = 1; | |
2538 | } | |
2539 | ||
2540 | /* Clear the mark of whether a symbol is an MRI common symbol. */ | |
2541 | ||
2542 | void | |
74937d39 | 2543 | symbol_clear_mri_common (symbolS *s) |
49309057 ILT |
2544 | { |
2545 | if (LOCAL_SYMBOL_CHECK (s)) | |
2546 | return; | |
2547 | s->sy_mri_common = 0; | |
2548 | } | |
2549 | ||
2550 | /* Return whether a symbol is an MRI common symbol. */ | |
2551 | ||
2552 | int | |
74937d39 | 2553 | symbol_mri_common_p (symbolS *s) |
49309057 ILT |
2554 | { |
2555 | if (LOCAL_SYMBOL_CHECK (s)) | |
2556 | return 0; | |
2557 | return s->sy_mri_common; | |
2558 | } | |
2559 | ||
2560 | /* Mark a symbol as having been written. */ | |
2561 | ||
2562 | void | |
74937d39 | 2563 | symbol_mark_written (symbolS *s) |
49309057 ILT |
2564 | { |
2565 | if (LOCAL_SYMBOL_CHECK (s)) | |
2566 | return; | |
2567 | s->written = 1; | |
2568 | } | |
2569 | ||
2570 | /* Clear the mark of whether a symbol has been written. */ | |
2571 | ||
2572 | void | |
74937d39 | 2573 | symbol_clear_written (symbolS *s) |
49309057 ILT |
2574 | { |
2575 | if (LOCAL_SYMBOL_CHECK (s)) | |
2576 | return; | |
2577 | s->written = 0; | |
2578 | } | |
2579 | ||
2580 | /* Return whether a symbol has been written. */ | |
2581 | ||
2582 | int | |
74937d39 | 2583 | symbol_written_p (symbolS *s) |
49309057 ILT |
2584 | { |
2585 | if (LOCAL_SYMBOL_CHECK (s)) | |
2586 | return 0; | |
2587 | return s->written; | |
2588 | } | |
2589 | ||
2590 | /* Mark a symbol has having been resolved. */ | |
2591 | ||
2592 | void | |
74937d39 | 2593 | symbol_mark_resolved (symbolS *s) |
49309057 ILT |
2594 | { |
2595 | if (LOCAL_SYMBOL_CHECK (s)) | |
2596 | { | |
2597 | local_symbol_mark_resolved ((struct local_symbol *) s); | |
2598 | return; | |
2599 | } | |
2600 | s->sy_resolved = 1; | |
2601 | } | |
2602 | ||
2603 | /* Return whether a symbol has been resolved. */ | |
2604 | ||
2605 | int | |
74937d39 | 2606 | symbol_resolved_p (symbolS *s) |
49309057 ILT |
2607 | { |
2608 | if (LOCAL_SYMBOL_CHECK (s)) | |
2609 | return local_symbol_resolved_p ((struct local_symbol *) s); | |
2610 | return s->sy_resolved; | |
2611 | } | |
2612 | ||
2613 | /* Return whether a symbol is a section symbol. */ | |
2614 | ||
2615 | int | |
74937d39 | 2616 | symbol_section_p (symbolS *s ATTRIBUTE_UNUSED) |
49309057 ILT |
2617 | { |
2618 | if (LOCAL_SYMBOL_CHECK (s)) | |
2619 | return 0; | |
49309057 | 2620 | return (s->bsym->flags & BSF_SECTION_SYM) != 0; |
49309057 ILT |
2621 | } |
2622 | ||
2623 | /* Return whether a symbol is equated to another symbol. */ | |
2624 | ||
2625 | int | |
74937d39 | 2626 | symbol_equated_p (symbolS *s) |
49309057 ILT |
2627 | { |
2628 | if (LOCAL_SYMBOL_CHECK (s)) | |
2629 | return 0; | |
2630 | return s->sy_value.X_op == O_symbol; | |
2631 | } | |
2632 | ||
e0890092 AM |
2633 | /* Return whether a symbol is equated to another symbol, and should be |
2634 | treated specially when writing out relocs. */ | |
2635 | ||
2636 | int | |
74937d39 | 2637 | symbol_equated_reloc_p (symbolS *s) |
e0890092 AM |
2638 | { |
2639 | if (LOCAL_SYMBOL_CHECK (s)) | |
2640 | return 0; | |
2641 | /* X_op_symbol, normally not used for O_symbol, is set by | |
2642 | resolve_symbol_value to flag expression syms that have been | |
2643 | equated. */ | |
2644 | return (s->sy_value.X_op == O_symbol | |
7be1c489 | 2645 | #if defined (OBJ_COFF) && defined (TE_PE) |
977cdf5a NC |
2646 | && ! S_IS_WEAK (s) |
2647 | #endif | |
e0890092 AM |
2648 | && ((s->sy_resolved && s->sy_value.X_op_symbol != NULL) |
2649 | || ! S_IS_DEFINED (s) | |
2650 | || S_IS_COMMON (s))); | |
2651 | } | |
2652 | ||
49309057 ILT |
2653 | /* Return whether a symbol has a constant value. */ |
2654 | ||
2655 | int | |
74937d39 | 2656 | symbol_constant_p (symbolS *s) |
49309057 ILT |
2657 | { |
2658 | if (LOCAL_SYMBOL_CHECK (s)) | |
2659 | return 1; | |
2660 | return s->sy_value.X_op == O_constant; | |
2661 | } | |
2662 | ||
bdf128d6 JB |
2663 | /* Return whether a symbol was cloned and thus removed from the global |
2664 | symbol list. */ | |
2665 | ||
2666 | int | |
2667 | symbol_shadow_p (symbolS *s) | |
2668 | { | |
2669 | if (LOCAL_SYMBOL_CHECK (s)) | |
2670 | return 0; | |
2671 | return s->sy_next == s; | |
2672 | } | |
2673 | ||
49309057 ILT |
2674 | /* Return the BFD symbol for a symbol. */ |
2675 | ||
2676 | asymbol * | |
74937d39 | 2677 | symbol_get_bfdsym (symbolS *s) |
49309057 ILT |
2678 | { |
2679 | if (LOCAL_SYMBOL_CHECK (s)) | |
2680 | s = local_symbol_convert ((struct local_symbol *) s); | |
2681 | return s->bsym; | |
2682 | } | |
2683 | ||
2684 | /* Set the BFD symbol for a symbol. */ | |
2685 | ||
2686 | void | |
74937d39 | 2687 | symbol_set_bfdsym (symbolS *s, asymbol *bsym) |
49309057 ILT |
2688 | { |
2689 | if (LOCAL_SYMBOL_CHECK (s)) | |
2690 | s = local_symbol_convert ((struct local_symbol *) s); | |
22fe14ad NC |
2691 | /* Usually, it is harmless to reset a symbol to a BFD section |
2692 | symbol. For example, obj_elf_change_section sets the BFD symbol | |
2693 | of an old symbol with the newly created section symbol. But when | |
2694 | we have multiple sections with the same name, the newly created | |
2695 | section may have the same name as an old section. We check if the | |
2696 | old symbol has been already marked as a section symbol before | |
2697 | resetting it. */ | |
2698 | if ((s->bsym->flags & BSF_SECTION_SYM) == 0) | |
2699 | s->bsym = bsym; | |
2700 | /* else XXX - What do we do now ? */ | |
49309057 ILT |
2701 | } |
2702 | ||
49309057 ILT |
2703 | #ifdef OBJ_SYMFIELD_TYPE |
2704 | ||
2705 | /* Get a pointer to the object format information for a symbol. */ | |
2706 | ||
2707 | OBJ_SYMFIELD_TYPE * | |
74937d39 | 2708 | symbol_get_obj (symbolS *s) |
49309057 ILT |
2709 | { |
2710 | if (LOCAL_SYMBOL_CHECK (s)) | |
2711 | s = local_symbol_convert ((struct local_symbol *) s); | |
2712 | return &s->sy_obj; | |
2713 | } | |
2714 | ||
2715 | /* Set the object format information for a symbol. */ | |
2716 | ||
2717 | void | |
74937d39 | 2718 | symbol_set_obj (symbolS *s, OBJ_SYMFIELD_TYPE *o) |
49309057 ILT |
2719 | { |
2720 | if (LOCAL_SYMBOL_CHECK (s)) | |
2721 | s = local_symbol_convert ((struct local_symbol *) s); | |
2722 | s->sy_obj = *o; | |
2723 | } | |
2724 | ||
2725 | #endif /* OBJ_SYMFIELD_TYPE */ | |
2726 | ||
2727 | #ifdef TC_SYMFIELD_TYPE | |
2728 | ||
2729 | /* Get a pointer to the processor information for a symbol. */ | |
2730 | ||
2731 | TC_SYMFIELD_TYPE * | |
74937d39 | 2732 | symbol_get_tc (symbolS *s) |
49309057 ILT |
2733 | { |
2734 | if (LOCAL_SYMBOL_CHECK (s)) | |
2735 | s = local_symbol_convert ((struct local_symbol *) s); | |
2736 | return &s->sy_tc; | |
2737 | } | |
2738 | ||
2739 | /* Set the processor information for a symbol. */ | |
2740 | ||
2741 | void | |
74937d39 | 2742 | symbol_set_tc (symbolS *s, TC_SYMFIELD_TYPE *o) |
49309057 ILT |
2743 | { |
2744 | if (LOCAL_SYMBOL_CHECK (s)) | |
2745 | s = local_symbol_convert ((struct local_symbol *) s); | |
2746 | s->sy_tc = *o; | |
2747 | } | |
2748 | ||
2749 | #endif /* TC_SYMFIELD_TYPE */ | |
2750 | ||
252b5132 | 2751 | void |
74937d39 | 2752 | symbol_begin (void) |
252b5132 RH |
2753 | { |
2754 | symbol_lastP = NULL; | |
7c743825 | 2755 | symbol_rootP = NULL; /* In case we have 0 symbols (!!) */ |
252b5132 | 2756 | sy_hash = hash_new (); |
49309057 | 2757 | local_hash = hash_new (); |
252b5132 RH |
2758 | |
2759 | memset ((char *) (&abs_symbol), '\0', sizeof (abs_symbol)); | |
252b5132 RH |
2760 | #if defined (EMIT_SECTION_SYMBOLS) || !defined (RELOC_REQUIRES_SYMBOL) |
2761 | abs_symbol.bsym = bfd_abs_section.symbol; | |
252b5132 RH |
2762 | #endif |
2763 | abs_symbol.sy_value.X_op = O_constant; | |
2764 | abs_symbol.sy_frag = &zero_address_frag; | |
2765 | ||
2766 | if (LOCAL_LABELS_FB) | |
2767 | fb_label_init (); | |
2768 | } | |
4a826962 MR |
2769 | |
2770 | void | |
2771 | dot_symbol_init (void) | |
2772 | { | |
2773 | dot_symbol.bsym = bfd_make_empty_symbol (stdoutput); | |
2774 | if (dot_symbol.bsym == NULL) | |
2775 | as_fatal ("bfd_make_empty_symbol: %s", bfd_errmsg (bfd_get_error ())); | |
2776 | dot_symbol.bsym->name = "."; | |
2777 | dot_symbol.sy_forward_ref = 1; | |
2778 | dot_symbol.sy_value.X_op = O_constant; | |
2779 | } | |
252b5132 RH |
2780 | \f |
2781 | int indent_level; | |
2782 | ||
2783 | /* Maximum indent level. | |
2784 | Available for modification inside a gdb session. */ | |
87c245cc | 2785 | static int max_indent_level = 8; |
252b5132 | 2786 | |
252b5132 | 2787 | void |
74937d39 | 2788 | print_symbol_value_1 (FILE *file, symbolS *sym) |
252b5132 RH |
2789 | { |
2790 | const char *name = S_GET_NAME (sym); | |
2791 | if (!name || !name[0]) | |
2792 | name = "(unnamed)"; | |
d2df793a NC |
2793 | fprintf (file, "sym "); |
2794 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) sym)); | |
2795 | fprintf (file, " %s", name); | |
49309057 ILT |
2796 | |
2797 | if (LOCAL_SYMBOL_CHECK (sym)) | |
2798 | { | |
2799 | struct local_symbol *locsym = (struct local_symbol *) sym; | |
d2df793a NC |
2800 | |
2801 | if (local_symbol_get_frag (locsym) != & zero_address_frag | |
49309057 | 2802 | && local_symbol_get_frag (locsym) != NULL) |
d2df793a NC |
2803 | { |
2804 | fprintf (file, " frag "); | |
2805 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) local_symbol_get_frag (locsym))); | |
2806 | } | |
49309057 ILT |
2807 | if (local_symbol_resolved_p (locsym)) |
2808 | fprintf (file, " resolved"); | |
2809 | fprintf (file, " local"); | |
2810 | } | |
2811 | else | |
2812 | { | |
2813 | if (sym->sy_frag != &zero_address_frag) | |
d2df793a NC |
2814 | { |
2815 | fprintf (file, " frag "); | |
2816 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) sym->sy_frag)); | |
2817 | } | |
49309057 ILT |
2818 | if (sym->written) |
2819 | fprintf (file, " written"); | |
2820 | if (sym->sy_resolved) | |
2821 | fprintf (file, " resolved"); | |
2822 | else if (sym->sy_resolving) | |
2823 | fprintf (file, " resolving"); | |
2824 | if (sym->sy_used_in_reloc) | |
2825 | fprintf (file, " used-in-reloc"); | |
2826 | if (sym->sy_used) | |
2827 | fprintf (file, " used"); | |
2828 | if (S_IS_LOCAL (sym)) | |
2829 | fprintf (file, " local"); | |
e97b3f28 | 2830 | if (S_IS_EXTERNAL (sym)) |
49309057 | 2831 | fprintf (file, " extern"); |
06e77878 AO |
2832 | if (S_IS_WEAK (sym)) |
2833 | fprintf (file, " weak"); | |
49309057 ILT |
2834 | if (S_IS_DEBUG (sym)) |
2835 | fprintf (file, " debug"); | |
2836 | if (S_IS_DEFINED (sym)) | |
2837 | fprintf (file, " defined"); | |
2838 | } | |
06e77878 AO |
2839 | if (S_IS_WEAKREFR (sym)) |
2840 | fprintf (file, " weakrefr"); | |
2841 | if (S_IS_WEAKREFD (sym)) | |
2842 | fprintf (file, " weakrefd"); | |
252b5132 | 2843 | fprintf (file, " %s", segment_name (S_GET_SEGMENT (sym))); |
49309057 | 2844 | if (symbol_resolved_p (sym)) |
252b5132 RH |
2845 | { |
2846 | segT s = S_GET_SEGMENT (sym); | |
2847 | ||
2848 | if (s != undefined_section | |
411863a4 | 2849 | && s != expr_section) |
0af1713e | 2850 | fprintf (file, " %lx", (unsigned long) S_GET_VALUE (sym)); |
252b5132 RH |
2851 | } |
2852 | else if (indent_level < max_indent_level | |
2853 | && S_GET_SEGMENT (sym) != undefined_section) | |
2854 | { | |
2855 | indent_level++; | |
2856 | fprintf (file, "\n%*s<", indent_level * 4, ""); | |
49309057 ILT |
2857 | if (LOCAL_SYMBOL_CHECK (sym)) |
2858 | fprintf (file, "constant %lx", | |
0af1713e | 2859 | (unsigned long) ((struct local_symbol *) sym)->lsy_value); |
49309057 ILT |
2860 | else |
2861 | print_expr_1 (file, &sym->sy_value); | |
252b5132 RH |
2862 | fprintf (file, ">"); |
2863 | indent_level--; | |
2864 | } | |
2865 | fflush (file); | |
2866 | } | |
2867 | ||
2868 | void | |
74937d39 | 2869 | print_symbol_value (symbolS *sym) |
252b5132 RH |
2870 | { |
2871 | indent_level = 0; | |
2872 | print_symbol_value_1 (stderr, sym); | |
2873 | fprintf (stderr, "\n"); | |
2874 | } | |
2875 | ||
2876 | static void | |
74937d39 | 2877 | print_binary (FILE *file, const char *name, expressionS *exp) |
252b5132 RH |
2878 | { |
2879 | indent_level++; | |
2880 | fprintf (file, "%s\n%*s<", name, indent_level * 4, ""); | |
2881 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2882 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2883 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2884 | fprintf (file, ">"); | |
2885 | indent_level--; | |
2886 | } | |
2887 | ||
2888 | void | |
74937d39 | 2889 | print_expr_1 (FILE *file, expressionS *exp) |
252b5132 | 2890 | { |
d2df793a NC |
2891 | fprintf (file, "expr "); |
2892 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) exp)); | |
2893 | fprintf (file, " "); | |
252b5132 RH |
2894 | switch (exp->X_op) |
2895 | { | |
2896 | case O_illegal: | |
2897 | fprintf (file, "illegal"); | |
2898 | break; | |
2899 | case O_absent: | |
2900 | fprintf (file, "absent"); | |
2901 | break; | |
2902 | case O_constant: | |
0af1713e | 2903 | fprintf (file, "constant %lx", (unsigned long) exp->X_add_number); |
252b5132 RH |
2904 | break; |
2905 | case O_symbol: | |
2906 | indent_level++; | |
2907 | fprintf (file, "symbol\n%*s<", indent_level * 4, ""); | |
2908 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2909 | fprintf (file, ">"); | |
2910 | maybe_print_addnum: | |
2911 | if (exp->X_add_number) | |
2912 | fprintf (file, "\n%*s%lx", indent_level * 4, "", | |
0af1713e | 2913 | (unsigned long) exp->X_add_number); |
252b5132 RH |
2914 | indent_level--; |
2915 | break; | |
2916 | case O_register: | |
2917 | fprintf (file, "register #%d", (int) exp->X_add_number); | |
2918 | break; | |
2919 | case O_big: | |
2920 | fprintf (file, "big"); | |
2921 | break; | |
2922 | case O_uminus: | |
2923 | fprintf (file, "uminus -<"); | |
2924 | indent_level++; | |
2925 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2926 | fprintf (file, ">"); | |
2927 | goto maybe_print_addnum; | |
2928 | case O_bit_not: | |
2929 | fprintf (file, "bit_not"); | |
2930 | break; | |
2931 | case O_multiply: | |
2932 | print_binary (file, "multiply", exp); | |
2933 | break; | |
2934 | case O_divide: | |
2935 | print_binary (file, "divide", exp); | |
2936 | break; | |
2937 | case O_modulus: | |
2938 | print_binary (file, "modulus", exp); | |
2939 | break; | |
2940 | case O_left_shift: | |
2941 | print_binary (file, "lshift", exp); | |
2942 | break; | |
2943 | case O_right_shift: | |
2944 | print_binary (file, "rshift", exp); | |
2945 | break; | |
2946 | case O_bit_inclusive_or: | |
2947 | print_binary (file, "bit_ior", exp); | |
2948 | break; | |
2949 | case O_bit_exclusive_or: | |
2950 | print_binary (file, "bit_xor", exp); | |
2951 | break; | |
2952 | case O_bit_and: | |
2953 | print_binary (file, "bit_and", exp); | |
2954 | break; | |
2955 | case O_eq: | |
2956 | print_binary (file, "eq", exp); | |
2957 | break; | |
2958 | case O_ne: | |
2959 | print_binary (file, "ne", exp); | |
2960 | break; | |
2961 | case O_lt: | |
2962 | print_binary (file, "lt", exp); | |
2963 | break; | |
2964 | case O_le: | |
2965 | print_binary (file, "le", exp); | |
2966 | break; | |
2967 | case O_ge: | |
2968 | print_binary (file, "ge", exp); | |
2969 | break; | |
2970 | case O_gt: | |
2971 | print_binary (file, "gt", exp); | |
2972 | break; | |
2973 | case O_logical_and: | |
2974 | print_binary (file, "logical_and", exp); | |
2975 | break; | |
2976 | case O_logical_or: | |
2977 | print_binary (file, "logical_or", exp); | |
2978 | break; | |
2979 | case O_add: | |
2980 | indent_level++; | |
2981 | fprintf (file, "add\n%*s<", indent_level * 4, ""); | |
2982 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2983 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2984 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2985 | fprintf (file, ">"); | |
2986 | goto maybe_print_addnum; | |
2987 | case O_subtract: | |
2988 | indent_level++; | |
2989 | fprintf (file, "subtract\n%*s<", indent_level * 4, ""); | |
2990 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2991 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2992 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2993 | fprintf (file, ">"); | |
2994 | goto maybe_print_addnum; | |
2995 | default: | |
2996 | fprintf (file, "{unknown opcode %d}", (int) exp->X_op); | |
2997 | break; | |
2998 | } | |
2999 | fflush (stdout); | |
3000 | } | |
3001 | ||
3002 | void | |
74937d39 | 3003 | print_expr (expressionS *exp) |
252b5132 RH |
3004 | { |
3005 | print_expr_1 (stderr, exp); | |
3006 | fprintf (stderr, "\n"); | |
3007 | } | |
3008 | ||
3009 | void | |
74937d39 | 3010 | symbol_print_statistics (FILE *file) |
252b5132 RH |
3011 | { |
3012 | hash_print_statistics (file, "symbol table", sy_hash); | |
49309057 ILT |
3013 | hash_print_statistics (file, "mini local symbol table", local_hash); |
3014 | fprintf (file, "%lu mini local symbols created, %lu converted\n", | |
3015 | local_symbol_count, local_symbol_conversion_count); | |
252b5132 | 3016 | } |
280d71bf DB |
3017 | |
3018 | #ifdef OBJ_COMPLEX_RELC | |
3019 | ||
3020 | /* Convert given symbol to a new complex-relocation symbol name. This | |
6f12865c | 3021 | may be a recursive function, since it might be called for non-leaf |
280d71bf | 3022 | nodes (plain symbols) in the expression tree. The caller owns the |
6f12865c AM |
3023 | returning string, so should free it eventually. Errors are |
3024 | indicated via as_bad and a NULL return value. The given symbol | |
280d71bf DB |
3025 | is marked with sy_used_in_reloc. */ |
3026 | ||
3027 | char * | |
3028 | symbol_relc_make_sym (symbolS * sym) | |
3029 | { | |
3030 | char * terminal = NULL; | |
3031 | const char * sname; | |
3032 | char typetag; | |
3033 | int sname_len; | |
3034 | ||
9c2799c2 | 3035 | gas_assert (sym != NULL); |
280d71bf DB |
3036 | |
3037 | /* Recurse to symbol_relc_make_expr if this symbol | |
3038 | is defined as an expression or a plain value. */ | |
3039 | if ( S_GET_SEGMENT (sym) == expr_section | |
3040 | || S_GET_SEGMENT (sym) == absolute_section) | |
3041 | return symbol_relc_make_expr (& sym->sy_value); | |
3042 | ||
3043 | /* This may be a "fake symbol" L0\001, referring to ".". | |
3044 | Write out a special null symbol to refer to this position. */ | |
3045 | if (! strcmp (S_GET_NAME (sym), FAKE_LABEL_NAME)) | |
3046 | return xstrdup ("."); | |
3047 | ||
3048 | /* We hope this is a plain leaf symbol. Construct the encoding | |
3049 | as {S,s}II...:CCCCCCC.... | |
3050 | where 'S'/'s' means section symbol / plain symbol | |
3051 | III is decimal for the symbol name length | |
3052 | CCC is the symbol name itself. */ | |
3053 | symbol_mark_used_in_reloc (sym); | |
3054 | ||
3055 | sname = S_GET_NAME (sym); | |
3056 | sname_len = strlen (sname); | |
3057 | typetag = symbol_section_p (sym) ? 'S' : 's'; | |
3058 | ||
3059 | terminal = xmalloc (1 /* S or s */ | |
3060 | + 8 /* sname_len in decimal */ | |
3061 | + 1 /* _ spacer */ | |
3062 | + sname_len /* name itself */ | |
3063 | + 1 /* \0 */ ); | |
3064 | ||
3065 | sprintf (terminal, "%c%d:%s", typetag, sname_len, sname); | |
3066 | return terminal; | |
3067 | } | |
3068 | ||
3069 | /* Convert given value to a new complex-relocation symbol name. This | |
3070 | is a non-recursive function, since it is be called for leaf nodes | |
3071 | (plain values) in the expression tree. The caller owns the | |
3072 | returning string, so should free() it eventually. No errors. */ | |
3073 | ||
3074 | char * | |
3075 | symbol_relc_make_value (offsetT val) | |
3076 | { | |
3077 | char * terminal = xmalloc (28); /* Enough for long long. */ | |
3078 | ||
3079 | terminal[0] = '#'; | |
1a412f5f | 3080 | bfd_sprintf_vma (stdoutput, terminal + 1, val); |
280d71bf DB |
3081 | return terminal; |
3082 | } | |
3083 | ||
3084 | /* Convert given expression to a new complex-relocation symbol name. | |
3085 | This is a recursive function, since it traverses the entire given | |
3086 | expression tree. The caller owns the returning string, so should | |
3087 | free() it eventually. Errors are indicated via as_bad() and a NULL | |
3088 | return value. */ | |
3089 | ||
3090 | char * | |
3091 | symbol_relc_make_expr (expressionS * exp) | |
3092 | { | |
3093 | char * opstr = NULL; /* Operator prefix string. */ | |
3094 | int arity = 0; /* Arity of this operator. */ | |
3095 | char * operands[3]; /* Up to three operands. */ | |
3096 | char * concat_string = NULL; | |
3097 | ||
3098 | operands[0] = operands[1] = operands[2] = NULL; | |
3099 | ||
9c2799c2 | 3100 | gas_assert (exp != NULL); |
280d71bf DB |
3101 | |
3102 | /* Match known operators -> fill in opstr, arity, operands[] and fall | |
3103 | through to construct subexpression fragments; may instead return | |
3104 | string directly for leaf nodes. */ | |
3105 | ||
3106 | /* See expr.h for the meaning of all these enums. Many operators | |
3107 | have an unnatural arity (X_add_number implicitly added). The | |
3108 | conversion logic expands them to explicit "+" subexpressions. */ | |
3109 | ||
3110 | switch (exp->X_op) | |
3111 | { | |
3112 | default: | |
3113 | as_bad ("Unknown expression operator (enum %d)", exp->X_op); | |
3114 | break; | |
3115 | ||
3116 | /* Leaf nodes. */ | |
3117 | case O_constant: | |
3118 | return symbol_relc_make_value (exp->X_add_number); | |
3119 | ||
3120 | case O_symbol: | |
3121 | if (exp->X_add_number) | |
3122 | { | |
3123 | arity = 2; | |
3124 | opstr = "+"; | |
3125 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); | |
3126 | operands[1] = symbol_relc_make_value (exp->X_add_number); | |
3127 | break; | |
3128 | } | |
3129 | else | |
3130 | return symbol_relc_make_sym (exp->X_add_symbol); | |
3131 | ||
3132 | /* Helper macros for nesting nodes. */ | |
3133 | ||
3134 | #define HANDLE_XADD_OPT1(str_) \ | |
3135 | if (exp->X_add_number) \ | |
3136 | { \ | |
3137 | arity = 2; \ | |
3138 | opstr = "+:" str_; \ | |
3139 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3140 | operands[1] = symbol_relc_make_value (exp->X_add_number); \ | |
3141 | break; \ | |
3142 | } \ | |
3143 | else \ | |
3144 | { \ | |
3145 | arity = 1; \ | |
3146 | opstr = str_; \ | |
3147 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3148 | } \ | |
3149 | break | |
3150 | ||
3151 | #define HANDLE_XADD_OPT2(str_) \ | |
3152 | if (exp->X_add_number) \ | |
3153 | { \ | |
3154 | arity = 3; \ | |
3155 | opstr = "+:" str_; \ | |
3156 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3157 | operands[1] = symbol_relc_make_sym (exp->X_op_symbol); \ | |
3158 | operands[2] = symbol_relc_make_value (exp->X_add_number); \ | |
3159 | } \ | |
3160 | else \ | |
3161 | { \ | |
3162 | arity = 2; \ | |
3163 | opstr = str_; \ | |
3164 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3165 | operands[1] = symbol_relc_make_sym (exp->X_op_symbol); \ | |
3166 | } \ | |
3167 | break | |
3168 | ||
3169 | /* Nesting nodes. */ | |
3170 | ||
3171 | case O_uminus: HANDLE_XADD_OPT1 ("0-"); | |
3172 | case O_bit_not: HANDLE_XADD_OPT1 ("~"); | |
3173 | case O_logical_not: HANDLE_XADD_OPT1 ("!"); | |
3174 | case O_multiply: HANDLE_XADD_OPT2 ("*"); | |
3175 | case O_divide: HANDLE_XADD_OPT2 ("/"); | |
3176 | case O_modulus: HANDLE_XADD_OPT2 ("%"); | |
3177 | case O_left_shift: HANDLE_XADD_OPT2 ("<<"); | |
3178 | case O_right_shift: HANDLE_XADD_OPT2 (">>"); | |
3179 | case O_bit_inclusive_or: HANDLE_XADD_OPT2 ("|"); | |
3180 | case O_bit_exclusive_or: HANDLE_XADD_OPT2 ("^"); | |
3181 | case O_bit_and: HANDLE_XADD_OPT2 ("&"); | |
3182 | case O_add: HANDLE_XADD_OPT2 ("+"); | |
3183 | case O_subtract: HANDLE_XADD_OPT2 ("-"); | |
3184 | case O_eq: HANDLE_XADD_OPT2 ("=="); | |
3185 | case O_ne: HANDLE_XADD_OPT2 ("!="); | |
3186 | case O_lt: HANDLE_XADD_OPT2 ("<"); | |
3187 | case O_le: HANDLE_XADD_OPT2 ("<="); | |
3188 | case O_ge: HANDLE_XADD_OPT2 (">="); | |
3189 | case O_gt: HANDLE_XADD_OPT2 (">"); | |
3190 | case O_logical_and: HANDLE_XADD_OPT2 ("&&"); | |
3191 | case O_logical_or: HANDLE_XADD_OPT2 ("||"); | |
3192 | } | |
3193 | ||
3194 | /* Validate & reject early. */ | |
3195 | if (arity >= 1 && ((operands[0] == NULL) || (strlen (operands[0]) == 0))) | |
3196 | opstr = NULL; | |
3197 | if (arity >= 2 && ((operands[1] == NULL) || (strlen (operands[1]) == 0))) | |
3198 | opstr = NULL; | |
3199 | if (arity >= 3 && ((operands[2] == NULL) || (strlen (operands[2]) == 0))) | |
3200 | opstr = NULL; | |
3201 | ||
3202 | if (opstr == NULL) | |
3203 | concat_string = NULL; | |
3204 | else | |
3205 | { | |
3206 | /* Allocate new string; include inter-operand padding gaps etc. */ | |
3207 | concat_string = xmalloc (strlen (opstr) | |
3208 | + 1 | |
3209 | + (arity >= 1 ? (strlen (operands[0]) + 1 ) : 0) | |
3210 | + (arity >= 2 ? (strlen (operands[1]) + 1 ) : 0) | |
3211 | + (arity >= 3 ? (strlen (operands[2]) + 0 ) : 0) | |
3212 | + 1); | |
9c2799c2 | 3213 | gas_assert (concat_string != NULL); |
280d71bf DB |
3214 | |
3215 | /* Format the thing. */ | |
3216 | sprintf (concat_string, | |
3217 | (arity == 0 ? "%s" : | |
3218 | arity == 1 ? "%s:%s" : | |
3219 | arity == 2 ? "%s:%s:%s" : | |
3220 | /* arity == 3 */ "%s:%s:%s:%s"), | |
3221 | opstr, operands[0], operands[1], operands[2]); | |
3222 | } | |
3223 | ||
3224 | /* Free operand strings (not opstr). */ | |
3225 | if (arity >= 1) xfree (operands[0]); | |
3226 | if (arity >= 2) xfree (operands[1]); | |
3227 | if (arity >= 3) xfree (operands[2]); | |
3228 | ||
3229 | return concat_string; | |
3230 | } | |
3231 | ||
3232 | #endif |