Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* symbols.c -symbol table- |
f7e42eb4 | 2 | Copyright 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
af65af87 | 3 | 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
252b5132 RH |
4 | Free Software Foundation, Inc. |
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; | |
51 | ||
52 | #ifdef DEBUG_SYMS | |
53 | #define debug_verify_symchain verify_symbol_chain | |
54 | #else | |
55 | #define debug_verify_symchain(root, last) ((void) 0) | |
56 | #endif | |
57 | ||
aa257fcd NC |
58 | #define DOLLAR_LABEL_CHAR '\001' |
59 | #define LOCAL_LABEL_CHAR '\002' | |
60 | ||
252b5132 | 61 | struct obstack notes; |
22ba0981 | 62 | #ifdef TE_PE |
977cdf5a NC |
63 | /* The name of an external symbol which is |
64 | used to make weak PE symbol names unique. */ | |
65 | const char * an_external_name; | |
66 | #endif | |
252b5132 | 67 | |
74937d39 KH |
68 | static char *save_symbol_name (const char *); |
69 | static void fb_label_init (void); | |
70 | static long dollar_label_instance (long); | |
71 | static long fb_label_instance (long); | |
252b5132 | 72 | |
74937d39 KH |
73 | static void print_binary (FILE *, const char *, expressionS *); |
74 | static void report_op_error (symbolS *, symbolS *, symbolS *); | |
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 * |
74937d39 | 191 | local_symbol_make (const char *name, segT section, valueT value, 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); | |
bd780143 | 205 | ret->lsy_value = value; |
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; | |
253 | #ifdef OBJ_VMS | |
254 | S_SET_OTHER (symbolP, const_flag); | |
255 | #endif | |
256 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
257 | S_SET_SEGMENT (symbolP, now_seg); | |
258 | } | |
259 | ||
7c743825 KH |
260 | /* We have just seen "<name>:". |
261 | Creates a struct symbol unless it already exists. | |
262 | ||
263 | Gripes if we are redefining a symbol incompatibly (and ignores it). */ | |
252b5132 | 264 | |
252b5132 | 265 | symbolS * |
74937d39 KH |
266 | colon (/* Just seen "x:" - rattle symbols & frags. */ |
267 | const char *sym_name /* Symbol name, as a cannonical string. */ | |
268 | /* We copy this string: OK to alter later. */) | |
252b5132 | 269 | { |
7c743825 | 270 | register symbolS *symbolP; /* Symbol we are working with. */ |
252b5132 | 271 | |
7cf10893 | 272 | /* Sun local labels go out of scope whenever a non-local symbol is |
252b5132 | 273 | defined. */ |
7be1c489 AM |
274 | if (LOCAL_LABELS_DOLLAR |
275 | && !bfd_is_local_label_name (stdoutput, sym_name)) | |
276 | dollar_label_clear (); | |
252b5132 RH |
277 | |
278 | #ifndef WORKING_DOT_WORD | |
279 | if (new_broken_words) | |
280 | { | |
281 | struct broken_word *a; | |
282 | int possible_bytes; | |
283 | fragS *frag_tmp; | |
284 | char *frag_opcode; | |
285 | ||
7cf10893 NC |
286 | if (now_seg == absolute_section) |
287 | { | |
288 | as_bad (_("cannot define symbol `%s' in absolute section"), sym_name); | |
289 | return NULL; | |
290 | } | |
1d3b2b27 | 291 | |
252b5132 RH |
292 | possible_bytes = (md_short_jump_size |
293 | + new_broken_words * md_long_jump_size); | |
294 | ||
295 | frag_tmp = frag_now; | |
296 | frag_opcode = frag_var (rs_broken_word, | |
297 | possible_bytes, | |
298 | possible_bytes, | |
299 | (relax_substateT) 0, | |
300 | (symbolS *) broken_words, | |
301 | (offsetT) 0, | |
302 | NULL); | |
303 | ||
7c743825 KH |
304 | /* We want to store the pointer to where to insert the jump |
305 | table in the fr_opcode of the rs_broken_word frag. This | |
306 | requires a little hackery. */ | |
252b5132 RH |
307 | while (frag_tmp |
308 | && (frag_tmp->fr_type != rs_broken_word | |
309 | || frag_tmp->fr_opcode)) | |
310 | frag_tmp = frag_tmp->fr_next; | |
311 | know (frag_tmp); | |
312 | frag_tmp->fr_opcode = frag_opcode; | |
313 | new_broken_words = 0; | |
314 | ||
315 | for (a = broken_words; a && a->dispfrag == 0; a = a->next_broken_word) | |
316 | a->dispfrag = frag_tmp; | |
317 | } | |
318 | #endif /* WORKING_DOT_WORD */ | |
319 | ||
320 | if ((symbolP = symbol_find (sym_name)) != 0) | |
321 | { | |
06e77878 | 322 | S_CLEAR_WEAKREFR (symbolP); |
252b5132 RH |
323 | #ifdef RESOLVE_SYMBOL_REDEFINITION |
324 | if (RESOLVE_SYMBOL_REDEFINITION (symbolP)) | |
325 | return symbolP; | |
326 | #endif | |
7c743825 | 327 | /* Now check for undefined symbols. */ |
49309057 ILT |
328 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
329 | { | |
330 | struct local_symbol *locsym = (struct local_symbol *) symbolP; | |
331 | ||
332 | if (locsym->lsy_section != undefined_section | |
333 | && (local_symbol_get_frag (locsym) != frag_now | |
334 | || locsym->lsy_section != now_seg | |
bd780143 | 335 | || locsym->lsy_value != frag_now_fix ())) |
49309057 | 336 | { |
0e389e77 | 337 | as_bad (_("symbol `%s' is already defined"), sym_name); |
49309057 ILT |
338 | return symbolP; |
339 | } | |
340 | ||
341 | locsym->lsy_section = now_seg; | |
342 | local_symbol_set_frag (locsym, frag_now); | |
bd780143 | 343 | locsym->lsy_value = frag_now_fix (); |
49309057 | 344 | } |
b54788f8 | 345 | else if (!(S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
92757bc9 JB |
346 | || S_IS_COMMON (symbolP) |
347 | || S_IS_VOLATILE (symbolP)) | |
252b5132 | 348 | { |
89cdfe57 | 349 | if (S_IS_VOLATILE (symbolP)) |
92757bc9 JB |
350 | { |
351 | symbolP = symbol_clone (symbolP, 1); | |
352 | S_SET_VALUE (symbolP, 0); | |
353 | S_CLEAR_VOLATILE (symbolP); | |
354 | } | |
252b5132 RH |
355 | if (S_GET_VALUE (symbolP) == 0) |
356 | { | |
a3371076 | 357 | define_sym_at_dot (symbolP); |
252b5132 RH |
358 | #ifdef N_UNDF |
359 | know (N_UNDF == 0); | |
7c743825 | 360 | #endif /* if we have one, it better be zero. */ |
252b5132 RH |
361 | |
362 | } | |
363 | else | |
364 | { | |
7c743825 KH |
365 | /* There are still several cases to check: |
366 | ||
367 | A .comm/.lcomm symbol being redefined as initialized | |
368 | data is OK | |
369 | ||
370 | A .comm/.lcomm symbol being redefined with a larger | |
371 | size is also OK | |
372 | ||
373 | This only used to be allowed on VMS gas, but Sun cc | |
374 | on the sparc also depends on it. */ | |
252b5132 RH |
375 | |
376 | if (((!S_IS_DEBUG (symbolP) | |
377 | && (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)) | |
378 | && S_IS_EXTERNAL (symbolP)) | |
379 | || S_GET_SEGMENT (symbolP) == bss_section) | |
380 | && (now_seg == data_section | |
b3ce1bf7 | 381 | || now_seg == bss_section |
252b5132 RH |
382 | || now_seg == S_GET_SEGMENT (symbolP))) |
383 | { | |
7c743825 | 384 | /* Select which of the 2 cases this is. */ |
252b5132 RH |
385 | if (now_seg != data_section) |
386 | { | |
7c743825 KH |
387 | /* New .comm for prev .comm symbol. |
388 | ||
389 | If the new size is larger we just change its | |
390 | value. If the new size is smaller, we ignore | |
391 | this symbol. */ | |
252b5132 RH |
392 | if (S_GET_VALUE (symbolP) |
393 | < ((unsigned) frag_now_fix ())) | |
394 | { | |
395 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
396 | } | |
397 | } | |
398 | else | |
399 | { | |
400 | /* It is a .comm/.lcomm being converted to initialized | |
401 | data. */ | |
a3371076 | 402 | define_sym_at_dot (symbolP); |
252b5132 RH |
403 | } |
404 | } | |
405 | else | |
406 | { | |
4c63da97 AM |
407 | #if (!defined (OBJ_AOUT) && !defined (OBJ_MAYBE_AOUT) \ |
408 | && !defined (OBJ_BOUT) && !defined (OBJ_MAYBE_BOUT)) | |
409 | static const char *od_buf = ""; | |
252b5132 | 410 | #else |
4c63da97 AM |
411 | char od_buf[100]; |
412 | od_buf[0] = '\0'; | |
4c63da97 | 413 | if (OUTPUT_FLAVOR == bfd_target_aout_flavour) |
d1a6c242 KH |
414 | sprintf (od_buf, "%d.%d.", |
415 | S_GET_OTHER (symbolP), | |
416 | S_GET_DESC (symbolP)); | |
4c63da97 | 417 | #endif |
0e389e77 | 418 | as_bad (_("symbol `%s' is already defined as \"%s\"/%s%ld"), |
252b5132 RH |
419 | sym_name, |
420 | segment_name (S_GET_SEGMENT (symbolP)), | |
4c63da97 | 421 | od_buf, |
252b5132 | 422 | (long) S_GET_VALUE (symbolP)); |
252b5132 | 423 | } |
7c743825 | 424 | } /* if the undefined symbol has no value */ |
252b5132 RH |
425 | } |
426 | else | |
427 | { | |
7c743825 | 428 | /* Don't blow up if the definition is the same. */ |
252b5132 RH |
429 | if (!(frag_now == symbolP->sy_frag |
430 | && S_GET_VALUE (symbolP) == frag_now_fix () | |
431 | && S_GET_SEGMENT (symbolP) == now_seg)) | |
92757bc9 JB |
432 | { |
433 | as_bad (_("symbol `%s' is already defined"), sym_name); | |
434 | symbolP = symbol_clone (symbolP, 0); | |
a3371076 | 435 | define_sym_at_dot (symbolP); |
92757bc9 | 436 | } |
d4887adc | 437 | } |
252b5132 RH |
438 | |
439 | } | |
49309057 ILT |
440 | else if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, sym_name)) |
441 | { | |
442 | symbolP = (symbolS *) local_symbol_make (sym_name, now_seg, | |
443 | (valueT) frag_now_fix (), | |
444 | frag_now); | |
445 | } | |
252b5132 RH |
446 | else |
447 | { | |
448 | symbolP = symbol_new (sym_name, now_seg, (valueT) frag_now_fix (), | |
449 | frag_now); | |
450 | #ifdef OBJ_VMS | |
451 | S_SET_OTHER (symbolP, const_flag); | |
452 | #endif /* OBJ_VMS */ | |
453 | ||
454 | symbol_table_insert (symbolP); | |
d4887adc | 455 | } |
252b5132 RH |
456 | |
457 | if (mri_common_symbol != NULL) | |
458 | { | |
459 | /* This symbol is actually being defined within an MRI common | |
1d3b2b27 | 460 | section. This requires special handling. */ |
49309057 ILT |
461 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
462 | symbolP = local_symbol_convert ((struct local_symbol *) symbolP); | |
252b5132 RH |
463 | symbolP->sy_value.X_op = O_symbol; |
464 | symbolP->sy_value.X_add_symbol = mri_common_symbol; | |
465 | symbolP->sy_value.X_add_number = S_GET_VALUE (mri_common_symbol); | |
466 | symbolP->sy_frag = &zero_address_frag; | |
467 | S_SET_SEGMENT (symbolP, expr_section); | |
468 | symbolP->sy_mri_common = 1; | |
469 | } | |
470 | ||
471 | #ifdef tc_frob_label | |
472 | tc_frob_label (symbolP); | |
473 | #endif | |
474 | #ifdef obj_frob_label | |
475 | obj_frob_label (symbolP); | |
476 | #endif | |
477 | ||
478 | return symbolP; | |
479 | } | |
480 | \f | |
7c743825 | 481 | /* Die if we can't insert the symbol. */ |
252b5132 | 482 | |
7c743825 | 483 | void |
74937d39 | 484 | symbol_table_insert (symbolS *symbolP) |
252b5132 RH |
485 | { |
486 | register const char *error_string; | |
487 | ||
488 | know (symbolP); | |
489 | know (S_GET_NAME (symbolP)); | |
490 | ||
49309057 ILT |
491 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
492 | { | |
493 | error_string = hash_jam (local_hash, S_GET_NAME (symbolP), | |
5a49b8ac | 494 | (void *) symbolP); |
49309057 | 495 | if (error_string != NULL) |
0e389e77 | 496 | as_fatal (_("inserting \"%s\" into symbol table failed: %s"), |
49309057 ILT |
497 | S_GET_NAME (symbolP), error_string); |
498 | return; | |
499 | } | |
500 | ||
5a49b8ac | 501 | if ((error_string = hash_jam (sy_hash, S_GET_NAME (symbolP), (void *) symbolP))) |
252b5132 | 502 | { |
0e389e77 | 503 | as_fatal (_("inserting \"%s\" into symbol table failed: %s"), |
252b5132 | 504 | S_GET_NAME (symbolP), error_string); |
7c743825 KH |
505 | } /* on error */ |
506 | } | |
252b5132 | 507 | \f |
7c743825 KH |
508 | /* If a symbol name does not exist, create it as undefined, and insert |
509 | it into the symbol table. Return a pointer to it. */ | |
510 | ||
252b5132 | 511 | symbolS * |
74937d39 | 512 | symbol_find_or_make (const char *name) |
252b5132 RH |
513 | { |
514 | register symbolS *symbolP; | |
515 | ||
516 | symbolP = symbol_find (name); | |
517 | ||
518 | if (symbolP == NULL) | |
519 | { | |
49309057 ILT |
520 | if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, name)) |
521 | { | |
522 | symbolP = md_undefined_symbol ((char *) name); | |
523 | if (symbolP != NULL) | |
524 | return symbolP; | |
525 | ||
526 | symbolP = (symbolS *) local_symbol_make (name, undefined_section, | |
527 | (valueT) 0, | |
528 | &zero_address_frag); | |
529 | return symbolP; | |
530 | } | |
49309057 | 531 | |
252b5132 RH |
532 | symbolP = symbol_make (name); |
533 | ||
534 | symbol_table_insert (symbolP); | |
535 | } /* if symbol wasn't found */ | |
536 | ||
537 | return (symbolP); | |
7c743825 | 538 | } |
252b5132 RH |
539 | |
540 | symbolS * | |
74937d39 | 541 | symbol_make (const char *name) |
252b5132 RH |
542 | { |
543 | symbolS *symbolP; | |
544 | ||
7c743825 | 545 | /* Let the machine description default it, e.g. for register names. */ |
252b5132 RH |
546 | symbolP = md_undefined_symbol ((char *) name); |
547 | ||
548 | if (!symbolP) | |
549 | symbolP = symbol_new (name, undefined_section, (valueT) 0, &zero_address_frag); | |
550 | ||
551 | return (symbolP); | |
7c743825 | 552 | } |
252b5132 | 553 | |
9497f5ac NC |
554 | symbolS * |
555 | symbol_clone (symbolS *orgsymP, int replace) | |
556 | { | |
557 | symbolS *newsymP; | |
6a2b6326 | 558 | asymbol *bsymorg, *bsymnew; |
9497f5ac NC |
559 | |
560 | /* Running local_symbol_convert on a clone that's not the one currently | |
561 | in local_hash would incorrectly replace the hash entry. Thus the | |
562 | symbol must be converted here. Note that the rest of the function | |
563 | depends on not encountering an unconverted symbol. */ | |
564 | if (LOCAL_SYMBOL_CHECK (orgsymP)) | |
565 | orgsymP = local_symbol_convert ((struct local_symbol *) orgsymP); | |
6a2b6326 | 566 | bsymorg = orgsymP->bsym; |
9497f5ac | 567 | |
1e9cc1c2 | 568 | newsymP = (symbolS *) obstack_alloc (¬es, sizeof (*newsymP)); |
9497f5ac | 569 | *newsymP = *orgsymP; |
6a2b6326 JB |
570 | bsymnew = bfd_make_empty_symbol (bfd_asymbol_bfd (bsymorg)); |
571 | if (bsymnew == NULL) | |
885afe7b | 572 | as_fatal ("bfd_make_empty_symbol: %s", bfd_errmsg (bfd_get_error ())); |
6a2b6326 JB |
573 | newsymP->bsym = bsymnew; |
574 | bsymnew->name = bsymorg->name; | |
575 | bsymnew->flags = bsymorg->flags; | |
576 | bsymnew->section = bsymorg->section; | |
6a2b6326 JB |
577 | bfd_copy_private_symbol_data (bfd_asymbol_bfd (bsymorg), bsymorg, |
578 | bfd_asymbol_bfd (bsymnew), bsymnew); | |
579 | ||
580 | #ifdef obj_symbol_clone_hook | |
581 | obj_symbol_clone_hook (newsymP, orgsymP); | |
582 | #endif | |
583 | ||
584 | #ifdef tc_symbol_clone_hook | |
585 | tc_symbol_clone_hook (newsymP, orgsymP); | |
586 | #endif | |
9497f5ac NC |
587 | |
588 | if (replace) | |
589 | { | |
590 | if (symbol_rootP == orgsymP) | |
591 | symbol_rootP = newsymP; | |
592 | else if (orgsymP->sy_previous) | |
593 | { | |
594 | orgsymP->sy_previous->sy_next = newsymP; | |
595 | orgsymP->sy_previous = NULL; | |
596 | } | |
597 | if (symbol_lastP == orgsymP) | |
598 | symbol_lastP = newsymP; | |
599 | else if (orgsymP->sy_next) | |
600 | orgsymP->sy_next->sy_previous = newsymP; | |
73e24c68 AM |
601 | |
602 | /* Symbols that won't be output can't be external. */ | |
603 | S_CLEAR_EXTERNAL (orgsymP); | |
bdf128d6 | 604 | orgsymP->sy_previous = orgsymP->sy_next = orgsymP; |
9497f5ac NC |
605 | debug_verify_symchain (symbol_rootP, symbol_lastP); |
606 | ||
607 | symbol_table_insert (newsymP); | |
608 | } | |
bdf128d6 | 609 | else |
73e24c68 AM |
610 | { |
611 | /* Symbols that won't be output can't be external. */ | |
612 | S_CLEAR_EXTERNAL (newsymP); | |
613 | newsymP->sy_previous = newsymP->sy_next = newsymP; | |
614 | } | |
9497f5ac NC |
615 | |
616 | return newsymP; | |
617 | } | |
618 | ||
619 | /* Referenced symbols, if they are forward references, need to be cloned | |
620 | (without replacing the original) so that the value of the referenced | |
621 | symbols at the point of use . */ | |
622 | ||
623 | #undef symbol_clone_if_forward_ref | |
624 | symbolS * | |
625 | symbol_clone_if_forward_ref (symbolS *symbolP, int is_forward) | |
626 | { | |
627 | if (symbolP && !LOCAL_SYMBOL_CHECK (symbolP)) | |
628 | { | |
629 | symbolS *add_symbol = symbolP->sy_value.X_add_symbol; | |
630 | symbolS *op_symbol = symbolP->sy_value.X_op_symbol; | |
631 | ||
632 | if (symbolP->sy_forward_ref) | |
633 | is_forward = 1; | |
634 | ||
635 | if (is_forward) | |
636 | { | |
637 | /* assign_symbol() clones volatile symbols; pre-existing expressions | |
638 | hold references to the original instance, but want the current | |
639 | value. Just repeat the lookup. */ | |
640 | if (add_symbol && S_IS_VOLATILE (add_symbol)) | |
641 | add_symbol = symbol_find_exact (S_GET_NAME (add_symbol)); | |
642 | if (op_symbol && S_IS_VOLATILE (op_symbol)) | |
643 | op_symbol = symbol_find_exact (S_GET_NAME (op_symbol)); | |
644 | } | |
645 | ||
646 | /* Re-using sy_resolving here, as this routine cannot get called from | |
647 | symbol resolution code. */ | |
648 | if (symbolP->bsym->section == expr_section && !symbolP->sy_resolving) | |
649 | { | |
650 | symbolP->sy_resolving = 1; | |
651 | add_symbol = symbol_clone_if_forward_ref (add_symbol, is_forward); | |
652 | op_symbol = symbol_clone_if_forward_ref (op_symbol, is_forward); | |
653 | symbolP->sy_resolving = 0; | |
654 | } | |
655 | ||
656 | if (symbolP->sy_forward_ref | |
657 | || add_symbol != symbolP->sy_value.X_add_symbol | |
658 | || op_symbol != symbolP->sy_value.X_op_symbol) | |
659 | symbolP = symbol_clone (symbolP, 0); | |
660 | ||
661 | symbolP->sy_value.X_add_symbol = add_symbol; | |
662 | symbolP->sy_value.X_op_symbol = op_symbol; | |
663 | } | |
664 | ||
665 | return symbolP; | |
666 | } | |
667 | ||
b7d6ed97 | 668 | symbolS * |
74937d39 | 669 | symbol_temp_new (segT seg, valueT ofs, fragS *frag) |
b7d6ed97 | 670 | { |
756d1d01 | 671 | return symbol_new (FAKE_LABEL_NAME, seg, ofs, frag); |
b7d6ed97 RH |
672 | } |
673 | ||
674 | symbolS * | |
74937d39 | 675 | symbol_temp_new_now (void) |
b7d6ed97 RH |
676 | { |
677 | return symbol_temp_new (now_seg, frag_now_fix (), frag_now); | |
678 | } | |
679 | ||
680 | symbolS * | |
74937d39 | 681 | symbol_temp_make (void) |
b7d6ed97 | 682 | { |
756d1d01 | 683 | return symbol_make (FAKE_LABEL_NAME); |
b7d6ed97 RH |
684 | } |
685 | ||
7c743825 KH |
686 | /* Implement symbol table lookup. |
687 | In: A symbol's name as a string: '\0' can't be part of a symbol name. | |
688 | Out: NULL if the name was not in the symbol table, else the address | |
689 | of a struct symbol associated with that name. */ | |
252b5132 | 690 | |
9758f3fc | 691 | symbolS * |
74937d39 | 692 | symbol_find_exact (const char *name) |
06e77878 AO |
693 | { |
694 | return symbol_find_exact_noref (name, 0); | |
695 | } | |
696 | ||
697 | symbolS * | |
698 | symbol_find_exact_noref (const char *name, int noref) | |
9758f3fc | 699 | { |
7be1c489 | 700 | struct local_symbol *locsym; |
06e77878 | 701 | symbolS* sym; |
9758f3fc | 702 | |
7be1c489 AM |
703 | locsym = (struct local_symbol *) hash_find (local_hash, name); |
704 | if (locsym != NULL) | |
705 | return (symbolS *) locsym; | |
9758f3fc | 706 | |
06e77878 AO |
707 | sym = ((symbolS *) hash_find (sy_hash, name)); |
708 | ||
709 | /* Any references to the symbol, except for the reference in | |
710 | .weakref, must clear this flag, such that the symbol does not | |
711 | turn into a weak symbol. Note that we don't have to handle the | |
712 | local_symbol case, since a weakrefd is always promoted out of the | |
713 | local_symbol table when it is turned into a weak symbol. */ | |
714 | if (sym && ! noref) | |
715 | S_CLEAR_WEAKREFD (sym); | |
716 | ||
717 | return sym; | |
9758f3fc AM |
718 | } |
719 | ||
252b5132 | 720 | symbolS * |
91c4c449 | 721 | symbol_find (const char *name) |
06e77878 AO |
722 | { |
723 | return symbol_find_noref (name, 0); | |
724 | } | |
725 | ||
726 | symbolS * | |
727 | symbol_find_noref (const char *name, int noref) | |
252b5132 | 728 | { |
252b5132 RH |
729 | #ifdef tc_canonicalize_symbol_name |
730 | { | |
731 | char *copy; | |
03987ced | 732 | size_t len = strlen (name) + 1; |
252b5132 | 733 | |
03987ced RH |
734 | copy = (char *) alloca (len); |
735 | memcpy (copy, name, len); | |
252b5132 RH |
736 | name = tc_canonicalize_symbol_name (copy); |
737 | } | |
738 | #endif | |
739 | ||
740 | if (! symbols_case_sensitive) | |
741 | { | |
03987ced RH |
742 | char *copy; |
743 | const char *orig; | |
744 | unsigned char c; | |
745 | ||
746 | orig = name; | |
747 | name = copy = (char *) alloca (strlen (name) + 1); | |
748 | ||
749 | while ((c = *orig++) != '\0') | |
750 | { | |
3882b010 | 751 | *copy++ = TOUPPER (c); |
03987ced RH |
752 | } |
753 | *copy = '\0'; | |
252b5132 RH |
754 | } |
755 | ||
06e77878 | 756 | return symbol_find_exact_noref (name, noref); |
252b5132 RH |
757 | } |
758 | ||
7c743825 KH |
759 | /* Once upon a time, symbols were kept in a singly linked list. At |
760 | least coff needs to be able to rearrange them from time to time, for | |
761 | which a doubly linked list is much more convenient. Loic did these | |
762 | as macros which seemed dangerous to me so they're now functions. | |
763 | xoxorich. */ | |
764 | ||
765 | /* Link symbol ADDME after symbol TARGET in the chain. */ | |
252b5132 | 766 | |
7c743825 | 767 | void |
74937d39 KH |
768 | symbol_append (symbolS *addme, symbolS *target, |
769 | symbolS **rootPP, symbolS **lastPP) | |
252b5132 | 770 | { |
49309057 ILT |
771 | if (LOCAL_SYMBOL_CHECK (addme)) |
772 | abort (); | |
773 | if (target != NULL && LOCAL_SYMBOL_CHECK (target)) | |
774 | abort (); | |
775 | ||
252b5132 RH |
776 | if (target == NULL) |
777 | { | |
778 | know (*rootPP == NULL); | |
779 | know (*lastPP == NULL); | |
780 | addme->sy_next = NULL; | |
252b5132 | 781 | addme->sy_previous = NULL; |
252b5132 RH |
782 | *rootPP = addme; |
783 | *lastPP = addme; | |
784 | return; | |
7c743825 | 785 | } /* if the list is empty */ |
252b5132 RH |
786 | |
787 | if (target->sy_next != NULL) | |
788 | { | |
252b5132 | 789 | target->sy_next->sy_previous = addme; |
252b5132 RH |
790 | } |
791 | else | |
792 | { | |
793 | know (*lastPP == target); | |
794 | *lastPP = addme; | |
7c743825 | 795 | } /* if we have a next */ |
252b5132 RH |
796 | |
797 | addme->sy_next = target->sy_next; | |
798 | target->sy_next = addme; | |
252b5132 | 799 | addme->sy_previous = target; |
252b5132 RH |
800 | |
801 | debug_verify_symchain (symbol_rootP, symbol_lastP); | |
802 | } | |
803 | ||
7c743825 KH |
804 | /* Set the chain pointers of SYMBOL to null. */ |
805 | ||
806 | void | |
74937d39 | 807 | symbol_clear_list_pointers (symbolS *symbolP) |
252b5132 | 808 | { |
49309057 ILT |
809 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
810 | abort (); | |
252b5132 | 811 | symbolP->sy_next = NULL; |
252b5132 | 812 | symbolP->sy_previous = NULL; |
252b5132 RH |
813 | } |
814 | ||
7c743825 KH |
815 | /* Remove SYMBOLP from the list. */ |
816 | ||
817 | void | |
74937d39 | 818 | symbol_remove (symbolS *symbolP, symbolS **rootPP, symbolS **lastPP) |
252b5132 | 819 | { |
49309057 ILT |
820 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
821 | abort (); | |
822 | ||
252b5132 RH |
823 | if (symbolP == *rootPP) |
824 | { | |
825 | *rootPP = symbolP->sy_next; | |
7c743825 | 826 | } /* if it was the root */ |
252b5132 RH |
827 | |
828 | if (symbolP == *lastPP) | |
829 | { | |
830 | *lastPP = symbolP->sy_previous; | |
7c743825 | 831 | } /* if it was the tail */ |
252b5132 RH |
832 | |
833 | if (symbolP->sy_next != NULL) | |
834 | { | |
835 | symbolP->sy_next->sy_previous = symbolP->sy_previous; | |
7c743825 | 836 | } /* if not last */ |
252b5132 RH |
837 | |
838 | if (symbolP->sy_previous != NULL) | |
839 | { | |
840 | symbolP->sy_previous->sy_next = symbolP->sy_next; | |
7c743825 | 841 | } /* if not first */ |
252b5132 RH |
842 | |
843 | debug_verify_symchain (*rootPP, *lastPP); | |
844 | } | |
845 | ||
7c743825 KH |
846 | /* Link symbol ADDME before symbol TARGET in the chain. */ |
847 | ||
848 | void | |
74937d39 KH |
849 | symbol_insert (symbolS *addme, symbolS *target, |
850 | symbolS **rootPP, symbolS **lastPP ATTRIBUTE_UNUSED) | |
252b5132 | 851 | { |
49309057 ILT |
852 | if (LOCAL_SYMBOL_CHECK (addme)) |
853 | abort (); | |
854 | if (LOCAL_SYMBOL_CHECK (target)) | |
855 | abort (); | |
856 | ||
252b5132 RH |
857 | if (target->sy_previous != NULL) |
858 | { | |
859 | target->sy_previous->sy_next = addme; | |
860 | } | |
861 | else | |
862 | { | |
863 | know (*rootPP == target); | |
864 | *rootPP = addme; | |
7c743825 | 865 | } /* if not first */ |
252b5132 RH |
866 | |
867 | addme->sy_previous = target->sy_previous; | |
868 | target->sy_previous = addme; | |
869 | addme->sy_next = target; | |
870 | ||
871 | debug_verify_symchain (*rootPP, *lastPP); | |
872 | } | |
873 | ||
7c743825 | 874 | void |
74937d39 | 875 | verify_symbol_chain (symbolS *rootP, symbolS *lastP) |
252b5132 RH |
876 | { |
877 | symbolS *symbolP = rootP; | |
878 | ||
879 | if (symbolP == NULL) | |
880 | return; | |
881 | ||
882 | for (; symbol_next (symbolP) != NULL; symbolP = symbol_next (symbolP)) | |
883 | { | |
9c2799c2 NC |
884 | gas_assert (symbolP->bsym != NULL); |
885 | gas_assert (symbolP->sy_next->sy_previous == symbolP); | |
252b5132 RH |
886 | } |
887 | ||
9c2799c2 | 888 | gas_assert (lastP == symbolP); |
252b5132 RH |
889 | } |
890 | ||
280d71bf DB |
891 | #ifdef OBJ_COMPLEX_RELC |
892 | ||
893 | static int | |
894 | use_complex_relocs_for (symbolS * symp) | |
895 | { | |
896 | switch (symp->sy_value.X_op) | |
897 | { | |
898 | case O_constant: | |
899 | return 0; | |
900 | ||
901 | case O_symbol: | |
902 | case O_symbol_rva: | |
903 | case O_uminus: | |
904 | case O_bit_not: | |
905 | case O_logical_not: | |
906 | if ( (S_IS_COMMON (symp->sy_value.X_add_symbol) | |
907 | || S_IS_LOCAL (symp->sy_value.X_add_symbol)) | |
908 | && | |
909 | (S_IS_DEFINED (symp->sy_value.X_add_symbol) | |
910 | && S_GET_SEGMENT (symp->sy_value.X_add_symbol) != expr_section)) | |
911 | return 0; | |
912 | break; | |
913 | ||
914 | case O_multiply: | |
915 | case O_divide: | |
916 | case O_modulus: | |
917 | case O_left_shift: | |
918 | case O_right_shift: | |
919 | case O_bit_inclusive_or: | |
920 | case O_bit_or_not: | |
921 | case O_bit_exclusive_or: | |
922 | case O_bit_and: | |
923 | case O_add: | |
924 | case O_subtract: | |
925 | case O_eq: | |
926 | case O_ne: | |
927 | case O_lt: | |
928 | case O_le: | |
929 | case O_ge: | |
930 | case O_gt: | |
931 | case O_logical_and: | |
932 | case O_logical_or: | |
933 | ||
934 | if ( (S_IS_COMMON (symp->sy_value.X_add_symbol) | |
935 | || S_IS_LOCAL (symp->sy_value.X_add_symbol)) | |
936 | && | |
937 | (S_IS_COMMON (symp->sy_value.X_op_symbol) | |
938 | || S_IS_LOCAL (symp->sy_value.X_op_symbol)) | |
939 | ||
940 | && S_IS_DEFINED (symp->sy_value.X_add_symbol) | |
941 | && S_IS_DEFINED (symp->sy_value.X_op_symbol) | |
942 | && S_GET_SEGMENT (symp->sy_value.X_add_symbol) != expr_section | |
943 | && S_GET_SEGMENT (symp->sy_value.X_op_symbol) != expr_section) | |
944 | return 0; | |
945 | break; | |
946 | ||
947 | default: | |
948 | break; | |
949 | } | |
950 | return 1; | |
951 | } | |
952 | #endif | |
953 | ||
0909233e | 954 | static void |
74937d39 | 955 | report_op_error (symbolS *symp, symbolS *left, symbolS *right) |
0909233e AM |
956 | { |
957 | char *file; | |
958 | unsigned int line; | |
959 | segT seg_left = S_GET_SEGMENT (left); | |
960 | segT seg_right = right ? S_GET_SEGMENT (right) : 0; | |
1d3b2b27 | 961 | |
0909233e AM |
962 | if (expr_symbol_where (symp, &file, &line)) |
963 | { | |
964 | if (seg_left == undefined_section) | |
965 | as_bad_where (file, line, | |
966 | _("undefined symbol `%s' in operation"), | |
967 | S_GET_NAME (left)); | |
968 | if (seg_right == undefined_section) | |
969 | as_bad_where (file, line, | |
970 | _("undefined symbol `%s' in operation"), | |
971 | S_GET_NAME (right)); | |
972 | if (seg_left != undefined_section | |
973 | && seg_right != undefined_section) | |
974 | { | |
975 | if (right) | |
976 | as_bad_where (file, line, | |
977 | _("invalid sections for operation on `%s' and `%s'"), | |
978 | S_GET_NAME (left), S_GET_NAME (right)); | |
979 | else | |
980 | as_bad_where (file, line, | |
981 | _("invalid section for operation on `%s'"), | |
982 | S_GET_NAME (left)); | |
983 | } | |
1d3b2b27 | 984 | |
0909233e AM |
985 | } |
986 | else | |
987 | { | |
988 | if (seg_left == undefined_section) | |
989 | as_bad (_("undefined symbol `%s' in operation setting `%s'"), | |
990 | S_GET_NAME (left), S_GET_NAME (symp)); | |
991 | if (seg_right == undefined_section) | |
992 | as_bad (_("undefined symbol `%s' in operation setting `%s'"), | |
993 | S_GET_NAME (right), S_GET_NAME (symp)); | |
994 | if (seg_left != undefined_section | |
995 | && seg_right != undefined_section) | |
996 | { | |
997 | if (right) | |
d9e05e4e AM |
998 | as_bad (_("invalid sections for operation on `%s' and `%s' setting `%s'"), |
999 | S_GET_NAME (left), S_GET_NAME (right), S_GET_NAME (symp)); | |
0909233e | 1000 | else |
d9e05e4e AM |
1001 | as_bad (_("invalid section for operation on `%s' setting `%s'"), |
1002 | S_GET_NAME (left), S_GET_NAME (symp)); | |
0909233e AM |
1003 | } |
1004 | } | |
1005 | } | |
1006 | ||
252b5132 RH |
1007 | /* Resolve the value of a symbol. This is called during the final |
1008 | pass over the symbol table to resolve any symbols with complex | |
1009 | values. */ | |
1010 | ||
1011 | valueT | |
74937d39 | 1012 | resolve_symbol_value (symbolS *symp) |
252b5132 RH |
1013 | { |
1014 | int resolved; | |
03e83a45 | 1015 | valueT final_val = 0; |
252b5132 RH |
1016 | segT final_seg; |
1017 | ||
49309057 ILT |
1018 | if (LOCAL_SYMBOL_CHECK (symp)) |
1019 | { | |
1020 | struct local_symbol *locsym = (struct local_symbol *) symp; | |
1021 | ||
bd780143 | 1022 | final_val = locsym->lsy_value; |
49309057 | 1023 | if (local_symbol_resolved_p (locsym)) |
bd780143 | 1024 | return final_val; |
49309057 | 1025 | |
bd780143 | 1026 | final_val += local_symbol_get_frag (locsym)->fr_address / OCTETS_PER_BYTE; |
49309057 | 1027 | |
6386f3a7 | 1028 | if (finalize_syms) |
49309057 | 1029 | { |
bd780143 | 1030 | locsym->lsy_value = final_val; |
49309057 ILT |
1031 | local_symbol_mark_resolved (locsym); |
1032 | } | |
1033 | ||
1034 | return final_val; | |
1035 | } | |
1036 | ||
252b5132 RH |
1037 | if (symp->sy_resolved) |
1038 | { | |
1039 | if (symp->sy_value.X_op == O_constant) | |
1040 | return (valueT) symp->sy_value.X_add_number; | |
1041 | else | |
1042 | return 0; | |
1043 | } | |
1044 | ||
1045 | resolved = 0; | |
1046 | final_seg = S_GET_SEGMENT (symp); | |
1047 | ||
1048 | if (symp->sy_resolving) | |
1049 | { | |
6386f3a7 | 1050 | if (finalize_syms) |
0e389e77 | 1051 | as_bad (_("symbol definition loop encountered at `%s'"), |
7c743825 | 1052 | S_GET_NAME (symp)); |
252b5132 RH |
1053 | final_val = 0; |
1054 | resolved = 1; | |
1055 | } | |
280d71bf DB |
1056 | #ifdef OBJ_COMPLEX_RELC |
1057 | else if (final_seg == expr_section | |
1058 | && use_complex_relocs_for (symp)) | |
1059 | { | |
1060 | symbolS * relc_symbol = NULL; | |
1061 | char * relc_symbol_name = NULL; | |
1062 | ||
1063 | relc_symbol_name = symbol_relc_make_expr (& symp->sy_value); | |
1064 | ||
1065 | /* For debugging, print out conversion input & output. */ | |
1066 | #ifdef DEBUG_SYMS | |
1067 | print_expr (& symp->sy_value); | |
1068 | if (relc_symbol_name) | |
1069 | fprintf (stderr, "-> relc symbol: %s\n", relc_symbol_name); | |
1070 | #endif | |
1071 | ||
1072 | if (relc_symbol_name != NULL) | |
1073 | relc_symbol = symbol_new (relc_symbol_name, undefined_section, | |
1074 | 0, & zero_address_frag); | |
1075 | ||
1076 | if (relc_symbol == NULL) | |
1077 | { | |
1078 | as_bad (_("cannot convert expression symbol %s to complex relocation"), | |
1079 | S_GET_NAME (symp)); | |
1080 | resolved = 0; | |
1081 | } | |
1082 | else | |
1083 | { | |
1084 | symbol_table_insert (relc_symbol); | |
1085 | ||
1086 | /* S_CLEAR_EXTERNAL (relc_symbol); */ | |
1087 | if (symp->bsym->flags & BSF_SRELC) | |
1088 | relc_symbol->bsym->flags |= BSF_SRELC; | |
1089 | else | |
1090 | relc_symbol->bsym->flags |= BSF_RELC; | |
1091 | /* symp->bsym->flags |= BSF_RELC; */ | |
1092 | copy_symbol_attributes (symp, relc_symbol); | |
1093 | symp->sy_value.X_op = O_symbol; | |
1094 | symp->sy_value.X_add_symbol = relc_symbol; | |
1095 | symp->sy_value.X_add_number = 0; | |
1096 | resolved = 1; | |
1097 | } | |
1098 | ||
1099 | final_seg = undefined_section; | |
1100 | goto exit_dont_set_value; | |
1101 | } | |
1102 | #endif | |
252b5132 RH |
1103 | else |
1104 | { | |
1105 | symbolS *add_symbol, *op_symbol; | |
1106 | offsetT left, right; | |
1107 | segT seg_left, seg_right; | |
1108 | operatorT op; | |
2d034539 | 1109 | int move_seg_ok; |
252b5132 RH |
1110 | |
1111 | symp->sy_resolving = 1; | |
1112 | ||
1113 | /* Help out with CSE. */ | |
1114 | add_symbol = symp->sy_value.X_add_symbol; | |
1115 | op_symbol = symp->sy_value.X_op_symbol; | |
1116 | final_val = symp->sy_value.X_add_number; | |
1117 | op = symp->sy_value.X_op; | |
1118 | ||
1119 | switch (op) | |
1120 | { | |
1121 | default: | |
1122 | BAD_CASE (op); | |
1123 | break; | |
1124 | ||
1125 | case O_absent: | |
1126 | final_val = 0; | |
1127 | /* Fall through. */ | |
1128 | ||
1129 | case O_constant: | |
bea9907b | 1130 | final_val += symp->sy_frag->fr_address / OCTETS_PER_BYTE; |
252b5132 RH |
1131 | if (final_seg == expr_section) |
1132 | final_seg = absolute_section; | |
db557034 AM |
1133 | /* Fall through. */ |
1134 | ||
1135 | case O_register: | |
252b5132 RH |
1136 | resolved = 1; |
1137 | break; | |
1138 | ||
1139 | case O_symbol: | |
1140 | case O_symbol_rva: | |
6386f3a7 | 1141 | left = resolve_symbol_value (add_symbol); |
e0890092 AM |
1142 | seg_left = S_GET_SEGMENT (add_symbol); |
1143 | if (finalize_syms) | |
1144 | symp->sy_value.X_op_symbol = NULL; | |
252b5132 | 1145 | |
e0890092 | 1146 | do_symbol: |
06e77878 AO |
1147 | if (S_IS_WEAKREFR (symp)) |
1148 | { | |
9c2799c2 | 1149 | gas_assert (final_val == 0); |
06e77878 AO |
1150 | if (S_IS_WEAKREFR (add_symbol)) |
1151 | { | |
9c2799c2 | 1152 | gas_assert (add_symbol->sy_value.X_op == O_symbol |
06e77878 AO |
1153 | && add_symbol->sy_value.X_add_number == 0); |
1154 | add_symbol = add_symbol->sy_value.X_add_symbol; | |
9c2799c2 | 1155 | gas_assert (! S_IS_WEAKREFR (add_symbol)); |
06e77878 AO |
1156 | symp->sy_value.X_add_symbol = add_symbol; |
1157 | } | |
1158 | } | |
1159 | ||
252b5132 RH |
1160 | if (symp->sy_mri_common) |
1161 | { | |
1162 | /* This is a symbol inside an MRI common section. The | |
e0890092 AM |
1163 | relocation routines are going to handle it specially. |
1164 | Don't change the value. */ | |
49309057 | 1165 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1166 | break; |
1167 | } | |
1168 | ||
6386f3a7 | 1169 | if (finalize_syms && final_val == 0) |
49309057 ILT |
1170 | { |
1171 | if (LOCAL_SYMBOL_CHECK (add_symbol)) | |
1172 | add_symbol = local_symbol_convert ((struct local_symbol *) | |
1173 | add_symbol); | |
1174 | copy_symbol_attributes (symp, add_symbol); | |
1175 | } | |
252b5132 | 1176 | |
e0890092 AM |
1177 | /* If we have equated this symbol to an undefined or common |
1178 | symbol, keep X_op set to O_symbol, and don't change | |
1179 | X_add_number. This permits the routine which writes out | |
1180 | relocation to detect this case, and convert the | |
1181 | relocation to be against the symbol to which this symbol | |
1182 | is equated. */ | |
977cdf5a | 1183 | if (! S_IS_DEFINED (add_symbol) |
7be1c489 | 1184 | #if defined (OBJ_COFF) && defined (TE_PE) |
977cdf5a NC |
1185 | || S_IS_WEAK (add_symbol) |
1186 | #endif | |
1187 | || S_IS_COMMON (add_symbol)) | |
252b5132 | 1188 | { |
6386f3a7 | 1189 | if (finalize_syms) |
252b5132 | 1190 | { |
252b5132 RH |
1191 | symp->sy_value.X_op = O_symbol; |
1192 | symp->sy_value.X_add_symbol = add_symbol; | |
1193 | symp->sy_value.X_add_number = final_val; | |
e0890092 AM |
1194 | /* Use X_op_symbol as a flag. */ |
1195 | symp->sy_value.X_op_symbol = add_symbol; | |
1196 | final_seg = seg_left; | |
252b5132 RH |
1197 | } |
1198 | final_val = 0; | |
49309057 | 1199 | resolved = symbol_resolved_p (add_symbol); |
c89c8534 | 1200 | symp->sy_resolving = 0; |
252b5132 RH |
1201 | goto exit_dont_set_value; |
1202 | } | |
0023dd27 AM |
1203 | else if (finalize_syms |
1204 | && ((final_seg == expr_section && seg_left != expr_section) | |
1205 | || symbol_shadow_p (symp))) | |
e0890092 AM |
1206 | { |
1207 | /* If the symbol is an expression symbol, do similarly | |
1208 | as for undefined and common syms above. Handles | |
1209 | "sym +/- expr" where "expr" cannot be evaluated | |
1210 | immediately, and we want relocations to be against | |
1211 | "sym", eg. because it is weak. */ | |
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; | |
1215 | symp->sy_value.X_op_symbol = add_symbol; | |
1216 | final_seg = seg_left; | |
1217 | final_val += symp->sy_frag->fr_address + left; | |
1218 | resolved = symbol_resolved_p (add_symbol); | |
1219 | symp->sy_resolving = 0; | |
1220 | goto exit_dont_set_value; | |
1221 | } | |
252b5132 RH |
1222 | else |
1223 | { | |
1224 | final_val += symp->sy_frag->fr_address + left; | |
1225 | if (final_seg == expr_section || final_seg == undefined_section) | |
e0890092 | 1226 | final_seg = seg_left; |
252b5132 RH |
1227 | } |
1228 | ||
49309057 | 1229 | resolved = symbol_resolved_p (add_symbol); |
06e77878 AO |
1230 | if (S_IS_WEAKREFR (symp)) |
1231 | goto exit_dont_set_value; | |
252b5132 RH |
1232 | break; |
1233 | ||
1234 | case O_uminus: | |
1235 | case O_bit_not: | |
1236 | case O_logical_not: | |
6386f3a7 | 1237 | left = resolve_symbol_value (add_symbol); |
784b640d | 1238 | seg_left = S_GET_SEGMENT (add_symbol); |
252b5132 | 1239 | |
0909233e AM |
1240 | /* By reducing these to the relevant dyadic operator, we get |
1241 | !S -> S == 0 permitted on anything, | |
1242 | -S -> 0 - S only permitted on absolute | |
1243 | ~S -> S ^ ~0 only permitted on absolute */ | |
1244 | if (op != O_logical_not && seg_left != absolute_section | |
1245 | && finalize_syms) | |
1246 | report_op_error (symp, add_symbol, NULL); | |
1d3b2b27 | 1247 | |
0909233e AM |
1248 | if (final_seg == expr_section || final_seg == undefined_section) |
1249 | final_seg = absolute_section; | |
1d3b2b27 | 1250 | |
252b5132 RH |
1251 | if (op == O_uminus) |
1252 | left = -left; | |
1253 | else if (op == O_logical_not) | |
1254 | left = !left; | |
1255 | else | |
1256 | left = ~left; | |
1257 | ||
1258 | final_val += left + symp->sy_frag->fr_address; | |
252b5132 | 1259 | |
49309057 | 1260 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1261 | break; |
1262 | ||
1263 | case O_multiply: | |
1264 | case O_divide: | |
1265 | case O_modulus: | |
1266 | case O_left_shift: | |
1267 | case O_right_shift: | |
1268 | case O_bit_inclusive_or: | |
1269 | case O_bit_or_not: | |
1270 | case O_bit_exclusive_or: | |
1271 | case O_bit_and: | |
1272 | case O_add: | |
1273 | case O_subtract: | |
1274 | case O_eq: | |
1275 | case O_ne: | |
1276 | case O_lt: | |
1277 | case O_le: | |
1278 | case O_ge: | |
1279 | case O_gt: | |
1280 | case O_logical_and: | |
1281 | case O_logical_or: | |
6386f3a7 AM |
1282 | left = resolve_symbol_value (add_symbol); |
1283 | right = resolve_symbol_value (op_symbol); | |
252b5132 RH |
1284 | seg_left = S_GET_SEGMENT (add_symbol); |
1285 | seg_right = S_GET_SEGMENT (op_symbol); | |
1286 | ||
1287 | /* Simplify addition or subtraction of a constant by folding the | |
1288 | constant into X_add_number. */ | |
e0890092 | 1289 | if (op == O_add) |
252b5132 RH |
1290 | { |
1291 | if (seg_right == absolute_section) | |
1292 | { | |
e0890092 | 1293 | final_val += right; |
252b5132 RH |
1294 | goto do_symbol; |
1295 | } | |
e0890092 | 1296 | else if (seg_left == absolute_section) |
252b5132 | 1297 | { |
252b5132 RH |
1298 | final_val += left; |
1299 | add_symbol = op_symbol; | |
1300 | left = right; | |
e0890092 AM |
1301 | seg_left = seg_right; |
1302 | goto do_symbol; | |
1303 | } | |
1304 | } | |
1305 | else if (op == O_subtract) | |
1306 | { | |
1307 | if (seg_right == absolute_section) | |
1308 | { | |
1309 | final_val -= right; | |
252b5132 RH |
1310 | goto do_symbol; |
1311 | } | |
1312 | } | |
1313 | ||
2d034539 | 1314 | move_seg_ok = 1; |
e0890092 AM |
1315 | /* Equality and non-equality tests are permitted on anything. |
1316 | Subtraction, and other comparison operators are permitted if | |
1317 | both operands are in the same section. Otherwise, both | |
1318 | operands must be absolute. We already handled the case of | |
1319 | addition or subtraction of a constant above. This will | |
1320 | probably need to be changed for an object file format which | |
2d034539 NC |
1321 | supports arbitrary expressions, such as IEEE-695. */ |
1322 | if (!(seg_left == absolute_section | |
0909233e AM |
1323 | && seg_right == absolute_section) |
1324 | && !(op == O_eq || op == O_ne) | |
1325 | && !((op == O_subtract | |
1326 | || op == O_lt || op == O_le || op == O_ge || op == O_gt) | |
1327 | && seg_left == seg_right | |
1328 | && (seg_left != undefined_section | |
1329 | || add_symbol == op_symbol))) | |
2d034539 NC |
1330 | { |
1331 | /* Don't emit messages unless we're finalizing the symbol value, | |
1332 | otherwise we may get the same message multiple times. */ | |
1333 | if (finalize_syms) | |
1334 | report_op_error (symp, add_symbol, op_symbol); | |
1335 | /* However do not move the symbol into the absolute section | |
1336 | if it cannot currently be resolved - this would confuse | |
1337 | other parts of the assembler into believing that the | |
1338 | expression had been evaluated to zero. */ | |
1339 | else | |
1340 | move_seg_ok = 0; | |
1341 | } | |
1d3b2b27 | 1342 | |
2d034539 NC |
1343 | if (move_seg_ok |
1344 | && (final_seg == expr_section || final_seg == undefined_section)) | |
0909233e | 1345 | final_seg = absolute_section; |
252b5132 RH |
1346 | |
1347 | /* Check for division by zero. */ | |
1348 | if ((op == O_divide || op == O_modulus) && right == 0) | |
1349 | { | |
1350 | /* If seg_right is not absolute_section, then we've | |
e0890092 | 1351 | already issued a warning about using a bad symbol. */ |
6386f3a7 | 1352 | if (seg_right == absolute_section && finalize_syms) |
252b5132 RH |
1353 | { |
1354 | char *file; | |
1355 | unsigned int line; | |
1356 | ||
1357 | if (expr_symbol_where (symp, &file, &line)) | |
1358 | as_bad_where (file, line, _("division by zero")); | |
1359 | else | |
0e389e77 | 1360 | as_bad (_("division by zero when setting `%s'"), |
252b5132 RH |
1361 | S_GET_NAME (symp)); |
1362 | } | |
1363 | ||
1364 | right = 1; | |
1365 | } | |
1366 | ||
1367 | switch (symp->sy_value.X_op) | |
1368 | { | |
1369 | case O_multiply: left *= right; break; | |
1370 | case O_divide: left /= right; break; | |
1371 | case O_modulus: left %= right; break; | |
1372 | case O_left_shift: left <<= right; break; | |
1373 | case O_right_shift: left >>= right; break; | |
1374 | case O_bit_inclusive_or: left |= right; break; | |
1375 | case O_bit_or_not: left |= ~right; break; | |
1376 | case O_bit_exclusive_or: left ^= right; break; | |
1377 | case O_bit_and: left &= right; break; | |
1378 | case O_add: left += right; break; | |
1379 | case O_subtract: left -= right; break; | |
e0890092 AM |
1380 | case O_eq: |
1381 | case O_ne: | |
1382 | left = (left == right && seg_left == seg_right | |
1383 | && (seg_left != undefined_section | |
1384 | || add_symbol == op_symbol) | |
1385 | ? ~ (offsetT) 0 : 0); | |
1386 | if (symp->sy_value.X_op == O_ne) | |
1387 | left = ~left; | |
1388 | break; | |
252b5132 RH |
1389 | case O_lt: left = left < right ? ~ (offsetT) 0 : 0; break; |
1390 | case O_le: left = left <= right ? ~ (offsetT) 0 : 0; break; | |
1391 | case O_ge: left = left >= right ? ~ (offsetT) 0 : 0; break; | |
1392 | case O_gt: left = left > right ? ~ (offsetT) 0 : 0; break; | |
1393 | case O_logical_and: left = left && right; break; | |
1394 | case O_logical_or: left = left || right; break; | |
1395 | default: abort (); | |
1396 | } | |
1397 | ||
1398 | final_val += symp->sy_frag->fr_address + left; | |
1399 | if (final_seg == expr_section || final_seg == undefined_section) | |
784b640d AM |
1400 | { |
1401 | if (seg_left == undefined_section | |
1402 | || seg_right == undefined_section) | |
1403 | final_seg = undefined_section; | |
1404 | else if (seg_left == absolute_section) | |
1405 | final_seg = seg_right; | |
1406 | else | |
1407 | final_seg = seg_left; | |
1408 | } | |
49309057 ILT |
1409 | resolved = (symbol_resolved_p (add_symbol) |
1410 | && symbol_resolved_p (op_symbol)); | |
7c743825 | 1411 | break; |
252b5132 | 1412 | |
252b5132 RH |
1413 | case O_big: |
1414 | case O_illegal: | |
1415 | /* Give an error (below) if not in expr_section. We don't | |
1416 | want to worry about expr_section symbols, because they | |
1417 | are fictional (they are created as part of expression | |
1418 | resolution), and any problems may not actually mean | |
1419 | anything. */ | |
1420 | break; | |
1421 | } | |
1422 | ||
1423 | symp->sy_resolving = 0; | |
1424 | } | |
1425 | ||
6386f3a7 | 1426 | if (finalize_syms) |
05bdb37e | 1427 | S_SET_VALUE (symp, final_val); |
252b5132 | 1428 | |
05bdb37e AM |
1429 | exit_dont_set_value: |
1430 | /* Always set the segment, even if not finalizing the value. | |
1431 | The segment is used to determine whether a symbol is defined. */ | |
05bdb37e | 1432 | S_SET_SEGMENT (symp, final_seg); |
252b5132 | 1433 | |
252b5132 | 1434 | /* Don't worry if we can't resolve an expr_section symbol. */ |
6386f3a7 | 1435 | if (finalize_syms) |
252b5132 RH |
1436 | { |
1437 | if (resolved) | |
1438 | symp->sy_resolved = 1; | |
1439 | else if (S_GET_SEGMENT (symp) != expr_section) | |
1440 | { | |
0e389e77 | 1441 | as_bad (_("can't resolve value for symbol `%s'"), |
7c743825 | 1442 | S_GET_NAME (symp)); |
252b5132 RH |
1443 | symp->sy_resolved = 1; |
1444 | } | |
1445 | } | |
1446 | ||
1447 | return final_val; | |
1448 | } | |
1449 | ||
5a49b8ac | 1450 | static void resolve_local_symbol (const char *, void *); |
49309057 ILT |
1451 | |
1452 | /* A static function passed to hash_traverse. */ | |
1453 | ||
1454 | static void | |
5a49b8ac | 1455 | resolve_local_symbol (const char *key ATTRIBUTE_UNUSED, void *value) |
49309057 ILT |
1456 | { |
1457 | if (value != NULL) | |
1e9cc1c2 | 1458 | resolve_symbol_value ((symbolS *) value); |
49309057 ILT |
1459 | } |
1460 | ||
49309057 ILT |
1461 | /* Resolve all local symbols. */ |
1462 | ||
1463 | void | |
74937d39 | 1464 | resolve_local_symbol_values (void) |
49309057 | 1465 | { |
49309057 | 1466 | hash_traverse (local_hash, resolve_local_symbol); |
49309057 ILT |
1467 | } |
1468 | ||
9497f5ac NC |
1469 | /* Obtain the current value of a symbol without changing any |
1470 | sub-expressions used. */ | |
1471 | ||
1472 | int | |
2e1e12b1 | 1473 | snapshot_symbol (symbolS **symbolPP, valueT *valueP, segT *segP, fragS **fragPP) |
9497f5ac | 1474 | { |
2e1e12b1 JB |
1475 | symbolS *symbolP = *symbolPP; |
1476 | ||
9497f5ac NC |
1477 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
1478 | { | |
1479 | struct local_symbol *locsym = (struct local_symbol *) symbolP; | |
1480 | ||
1481 | *valueP = locsym->lsy_value; | |
1482 | *segP = locsym->lsy_section; | |
1483 | *fragPP = local_symbol_get_frag (locsym); | |
1484 | } | |
1485 | else | |
1486 | { | |
1487 | expressionS expr = symbolP->sy_value; | |
1488 | ||
1489 | if (!symbolP->sy_resolved && expr.X_op != O_illegal) | |
1490 | { | |
1491 | int resolved; | |
1492 | ||
1493 | if (symbolP->sy_resolving) | |
1494 | return 0; | |
1495 | symbolP->sy_resolving = 1; | |
1496 | resolved = resolve_expression (&expr); | |
1497 | symbolP->sy_resolving = 0; | |
1498 | if (!resolved) | |
1499 | return 0; | |
1500 | ||
1501 | switch (expr.X_op) | |
1502 | { | |
1503 | case O_constant: | |
1504 | case O_register: | |
2e1e12b1 | 1505 | if (!symbol_equated_p (symbolP)) |
9497f5ac NC |
1506 | break; |
1507 | /* Fall thru. */ | |
1508 | case O_symbol: | |
1509 | case O_symbol_rva: | |
1510 | symbolP = expr.X_add_symbol; | |
1511 | break; | |
1512 | default: | |
1513 | return 0; | |
1514 | } | |
1515 | } | |
1516 | ||
4dcb3903 L |
1517 | /* Never change a defined symbol. */ |
1518 | if (symbolP->bsym->section == undefined_section | |
1519 | || symbolP->bsym->section == expr_section) | |
1520 | *symbolPP = symbolP; | |
9497f5ac NC |
1521 | *valueP = expr.X_add_number; |
1522 | *segP = symbolP->bsym->section; | |
1523 | *fragPP = symbolP->sy_frag; | |
1524 | ||
1525 | if (*segP == expr_section) | |
1526 | switch (expr.X_op) | |
1527 | { | |
1528 | case O_constant: *segP = absolute_section; break; | |
1529 | case O_register: *segP = reg_section; break; | |
1530 | default: break; | |
1531 | } | |
1532 | } | |
1533 | ||
1534 | return 1; | |
1535 | } | |
1536 | ||
252b5132 RH |
1537 | /* Dollar labels look like a number followed by a dollar sign. Eg, "42$". |
1538 | They are *really* local. That is, they go out of scope whenever we see a | |
1539 | label that isn't local. Also, like fb labels, there can be multiple | |
1540 | instances of a dollar label. Therefor, we name encode each instance with | |
1541 | the instance number, keep a list of defined symbols separate from the real | |
1542 | symbol table, and we treat these buggers as a sparse array. */ | |
1543 | ||
1544 | static long *dollar_labels; | |
1545 | static long *dollar_label_instances; | |
1546 | static char *dollar_label_defines; | |
1547 | static unsigned long dollar_label_count; | |
1548 | static unsigned long dollar_label_max; | |
1549 | ||
7c743825 | 1550 | int |
74937d39 | 1551 | dollar_label_defined (long label) |
252b5132 RH |
1552 | { |
1553 | long *i; | |
1554 | ||
1555 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1556 | ||
1557 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1558 | if (*i == label) | |
1559 | return dollar_label_defines[i - dollar_labels]; | |
1560 | ||
7c743825 | 1561 | /* If we get here, label isn't defined. */ |
252b5132 | 1562 | return 0; |
7c743825 | 1563 | } |
252b5132 RH |
1564 | |
1565 | static long | |
74937d39 | 1566 | dollar_label_instance (long label) |
252b5132 RH |
1567 | { |
1568 | long *i; | |
1569 | ||
1570 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1571 | ||
1572 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1573 | if (*i == label) | |
1574 | return (dollar_label_instances[i - dollar_labels]); | |
1575 | ||
7c743825 KH |
1576 | /* If we get here, we haven't seen the label before. |
1577 | Therefore its instance count is zero. */ | |
252b5132 RH |
1578 | return 0; |
1579 | } | |
1580 | ||
7c743825 | 1581 | void |
74937d39 | 1582 | dollar_label_clear (void) |
252b5132 RH |
1583 | { |
1584 | memset (dollar_label_defines, '\0', (unsigned int) dollar_label_count); | |
1585 | } | |
1586 | ||
1587 | #define DOLLAR_LABEL_BUMP_BY 10 | |
1588 | ||
7c743825 | 1589 | void |
74937d39 | 1590 | define_dollar_label (long label) |
252b5132 RH |
1591 | { |
1592 | long *i; | |
1593 | ||
1594 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1595 | if (*i == label) | |
1596 | { | |
1597 | ++dollar_label_instances[i - dollar_labels]; | |
1598 | dollar_label_defines[i - dollar_labels] = 1; | |
1599 | return; | |
1600 | } | |
1601 | ||
7c743825 | 1602 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1603 | |
1604 | if (dollar_labels == NULL) | |
1605 | { | |
1606 | dollar_labels = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long)); | |
1607 | dollar_label_instances = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long)); | |
1e9cc1c2 | 1608 | dollar_label_defines = (char *) xmalloc (DOLLAR_LABEL_BUMP_BY); |
252b5132 RH |
1609 | dollar_label_max = DOLLAR_LABEL_BUMP_BY; |
1610 | dollar_label_count = 0; | |
1611 | } | |
1612 | else if (dollar_label_count == dollar_label_max) | |
1613 | { | |
1614 | dollar_label_max += DOLLAR_LABEL_BUMP_BY; | |
1615 | dollar_labels = (long *) xrealloc ((char *) dollar_labels, | |
1616 | dollar_label_max * sizeof (long)); | |
1617 | dollar_label_instances = (long *) xrealloc ((char *) dollar_label_instances, | |
1618 | dollar_label_max * sizeof (long)); | |
1e9cc1c2 | 1619 | dollar_label_defines = (char *) xrealloc (dollar_label_defines, dollar_label_max); |
7c743825 | 1620 | } /* if we needed to grow */ |
252b5132 RH |
1621 | |
1622 | dollar_labels[dollar_label_count] = label; | |
1623 | dollar_label_instances[dollar_label_count] = 1; | |
1624 | dollar_label_defines[dollar_label_count] = 1; | |
1625 | ++dollar_label_count; | |
1626 | } | |
1627 | ||
7c743825 KH |
1628 | /* Caller must copy returned name: we re-use the area for the next name. |
1629 | ||
1630 | The mth occurence of label n: is turned into the symbol "Ln^Am" | |
1631 | where n is the label number and m is the instance number. "L" makes | |
1632 | it a label discarded unless debugging and "^A"('\1') ensures no | |
1633 | ordinary symbol SHOULD get the same name as a local label | |
1634 | symbol. The first "4:" is "L4^A1" - the m numbers begin at 1. | |
1635 | ||
1636 | fb labels get the same treatment, except that ^B is used in place | |
1637 | of ^A. */ | |
1638 | ||
1639 | char * /* Return local label name. */ | |
74937d39 KH |
1640 | dollar_label_name (register long n, /* we just saw "n$:" : n a number. */ |
1641 | register int augend /* 0 for current instance, 1 for new instance. */) | |
252b5132 RH |
1642 | { |
1643 | long i; | |
7c743825 | 1644 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 RH |
1645 | static char symbol_name_build[24]; |
1646 | register char *p; | |
1647 | register char *q; | |
7c743825 | 1648 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1649 | |
1650 | know (n >= 0); | |
1651 | know (augend == 0 || augend == 1); | |
1652 | p = symbol_name_build; | |
f84dd1f0 NC |
1653 | #ifdef LOCAL_LABEL_PREFIX |
1654 | *p++ = LOCAL_LABEL_PREFIX; | |
1655 | #endif | |
252b5132 RH |
1656 | *p++ = 'L'; |
1657 | ||
7c743825 KH |
1658 | /* Next code just does sprintf( {}, "%d", n); */ |
1659 | /* Label number. */ | |
252b5132 RH |
1660 | q = symbol_name_temporary; |
1661 | for (*q++ = 0, i = n; i; ++q) | |
1662 | { | |
1663 | *q = i % 10 + '0'; | |
1664 | i /= 10; | |
1665 | } | |
1666 | while ((*p = *--q) != '\0') | |
1667 | ++p; | |
1668 | ||
aa257fcd | 1669 | *p++ = DOLLAR_LABEL_CHAR; /* ^A */ |
252b5132 | 1670 | |
7c743825 | 1671 | /* Instance number. */ |
252b5132 RH |
1672 | q = symbol_name_temporary; |
1673 | for (*q++ = 0, i = dollar_label_instance (n) + augend; i; ++q) | |
1674 | { | |
1675 | *q = i % 10 + '0'; | |
1676 | i /= 10; | |
1677 | } | |
1678 | while ((*p++ = *--q) != '\0');; | |
1679 | ||
7c743825 | 1680 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 RH |
1681 | return symbol_name_build; |
1682 | } | |
1683 | ||
47eebc20 | 1684 | /* Somebody else's idea of local labels. They are made by "n:" where n |
7c743825 KH |
1685 | is any decimal digit. Refer to them with |
1686 | "nb" for previous (backward) n: | |
1687 | or "nf" for next (forward) n:. | |
1688 | ||
1689 | We do a little better and let n be any number, not just a single digit, but | |
1690 | since the other guy's assembler only does ten, we treat the first ten | |
1691 | specially. | |
1692 | ||
1693 | Like someone else's assembler, we have one set of local label counters for | |
1694 | entire assembly, not one set per (sub)segment like in most assemblers. This | |
1695 | implies that one can refer to a label in another segment, and indeed some | |
1696 | crufty compilers have done just that. | |
1697 | ||
1698 | Since there could be a LOT of these things, treat them as a sparse | |
1699 | array. */ | |
252b5132 RH |
1700 | |
1701 | #define FB_LABEL_SPECIAL (10) | |
1702 | ||
1703 | static long fb_low_counter[FB_LABEL_SPECIAL]; | |
1704 | static long *fb_labels; | |
1705 | static long *fb_label_instances; | |
1706 | static long fb_label_count; | |
1707 | static long fb_label_max; | |
1708 | ||
7c743825 | 1709 | /* This must be more than FB_LABEL_SPECIAL. */ |
252b5132 RH |
1710 | #define FB_LABEL_BUMP_BY (FB_LABEL_SPECIAL + 6) |
1711 | ||
7c743825 | 1712 | static void |
74937d39 | 1713 | fb_label_init (void) |
252b5132 RH |
1714 | { |
1715 | memset ((void *) fb_low_counter, '\0', sizeof (fb_low_counter)); | |
7c743825 | 1716 | } |
252b5132 | 1717 | |
7c743825 KH |
1718 | /* Add one to the instance number of this fb label. */ |
1719 | ||
1720 | void | |
74937d39 | 1721 | fb_label_instance_inc (long label) |
252b5132 RH |
1722 | { |
1723 | long *i; | |
1724 | ||
1725 | if (label < FB_LABEL_SPECIAL) | |
1726 | { | |
1727 | ++fb_low_counter[label]; | |
1728 | return; | |
1729 | } | |
1730 | ||
1731 | if (fb_labels != NULL) | |
1732 | { | |
1733 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1734 | i < fb_labels + fb_label_count; ++i) | |
1735 | { | |
1736 | if (*i == label) | |
1737 | { | |
1738 | ++fb_label_instances[i - fb_labels]; | |
1739 | return; | |
7c743825 KH |
1740 | } /* if we find it */ |
1741 | } /* for each existing label */ | |
252b5132 RH |
1742 | } |
1743 | ||
7c743825 | 1744 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1745 | |
1746 | if (fb_labels == NULL) | |
1747 | { | |
1748 | fb_labels = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long)); | |
1749 | fb_label_instances = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long)); | |
1750 | fb_label_max = FB_LABEL_BUMP_BY; | |
1751 | fb_label_count = FB_LABEL_SPECIAL; | |
1752 | ||
1753 | } | |
1754 | else if (fb_label_count == fb_label_max) | |
1755 | { | |
1756 | fb_label_max += FB_LABEL_BUMP_BY; | |
1757 | fb_labels = (long *) xrealloc ((char *) fb_labels, | |
1758 | fb_label_max * sizeof (long)); | |
1759 | fb_label_instances = (long *) xrealloc ((char *) fb_label_instances, | |
1760 | fb_label_max * sizeof (long)); | |
7c743825 | 1761 | } /* if we needed to grow */ |
252b5132 RH |
1762 | |
1763 | fb_labels[fb_label_count] = label; | |
1764 | fb_label_instances[fb_label_count] = 1; | |
1765 | ++fb_label_count; | |
1766 | } | |
1767 | ||
7c743825 | 1768 | static long |
74937d39 | 1769 | fb_label_instance (long label) |
252b5132 RH |
1770 | { |
1771 | long *i; | |
1772 | ||
1773 | if (label < FB_LABEL_SPECIAL) | |
1774 | { | |
1775 | return (fb_low_counter[label]); | |
1776 | } | |
1777 | ||
1778 | if (fb_labels != NULL) | |
1779 | { | |
1780 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1781 | i < fb_labels + fb_label_count; ++i) | |
1782 | { | |
1783 | if (*i == label) | |
1784 | { | |
1785 | return (fb_label_instances[i - fb_labels]); | |
7c743825 KH |
1786 | } /* if we find it */ |
1787 | } /* for each existing label */ | |
252b5132 RH |
1788 | } |
1789 | ||
1790 | /* We didn't find the label, so this must be a reference to the | |
1791 | first instance. */ | |
1792 | return 0; | |
1793 | } | |
1794 | ||
7c743825 KH |
1795 | /* Caller must copy returned name: we re-use the area for the next name. |
1796 | ||
1797 | The mth occurence of label n: is turned into the symbol "Ln^Bm" | |
1798 | where n is the label number and m is the instance number. "L" makes | |
1799 | it a label discarded unless debugging and "^B"('\2') ensures no | |
1800 | ordinary symbol SHOULD get the same name as a local label | |
1801 | symbol. The first "4:" is "L4^B1" - the m numbers begin at 1. | |
1802 | ||
1803 | dollar labels get the same treatment, except that ^A is used in | |
1804 | place of ^B. */ | |
1805 | ||
1806 | char * /* Return local label name. */ | |
74937d39 KH |
1807 | fb_label_name (long n, /* We just saw "n:", "nf" or "nb" : n a number. */ |
1808 | long augend /* 0 for nb, 1 for n:, nf. */) | |
252b5132 RH |
1809 | { |
1810 | long i; | |
7c743825 | 1811 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 RH |
1812 | static char symbol_name_build[24]; |
1813 | register char *p; | |
1814 | register char *q; | |
7c743825 | 1815 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1816 | |
1817 | know (n >= 0); | |
a76903bf | 1818 | #ifdef TC_MMIX |
71ba24a1 | 1819 | know ((unsigned long) augend <= 2 /* See mmix_fb_label. */); |
a76903bf | 1820 | #else |
71ba24a1 | 1821 | know ((unsigned long) augend <= 1); |
a76903bf | 1822 | #endif |
252b5132 | 1823 | p = symbol_name_build; |
aa257fcd NC |
1824 | #ifdef LOCAL_LABEL_PREFIX |
1825 | *p++ = LOCAL_LABEL_PREFIX; | |
1826 | #endif | |
252b5132 RH |
1827 | *p++ = 'L'; |
1828 | ||
7c743825 KH |
1829 | /* Next code just does sprintf( {}, "%d", n); */ |
1830 | /* Label number. */ | |
252b5132 RH |
1831 | q = symbol_name_temporary; |
1832 | for (*q++ = 0, i = n; i; ++q) | |
1833 | { | |
1834 | *q = i % 10 + '0'; | |
1835 | i /= 10; | |
1836 | } | |
1837 | while ((*p = *--q) != '\0') | |
1838 | ++p; | |
1839 | ||
aa257fcd | 1840 | *p++ = LOCAL_LABEL_CHAR; /* ^B */ |
252b5132 | 1841 | |
7c743825 | 1842 | /* Instance number. */ |
252b5132 RH |
1843 | q = symbol_name_temporary; |
1844 | for (*q++ = 0, i = fb_label_instance (n) + augend; i; ++q) | |
1845 | { | |
1846 | *q = i % 10 + '0'; | |
1847 | i /= 10; | |
1848 | } | |
1849 | while ((*p++ = *--q) != '\0');; | |
1850 | ||
7c743825 | 1851 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 | 1852 | return (symbol_name_build); |
7c743825 | 1853 | } |
252b5132 | 1854 | |
7c743825 KH |
1855 | /* Decode name that may have been generated by foo_label_name() above. |
1856 | If the name wasn't generated by foo_label_name(), then return it | |
1857 | unaltered. This is used for error messages. */ | |
252b5132 RH |
1858 | |
1859 | char * | |
74937d39 | 1860 | decode_local_label_name (char *s) |
252b5132 RH |
1861 | { |
1862 | char *p; | |
1863 | char *symbol_decode; | |
1864 | int label_number; | |
1865 | int instance_number; | |
1866 | char *type; | |
d95767bf | 1867 | const char *message_format; |
aa257fcd | 1868 | int index = 0; |
43ad3147 | 1869 | |
aa257fcd NC |
1870 | #ifdef LOCAL_LABEL_PREFIX |
1871 | if (s[index] == LOCAL_LABEL_PREFIX) | |
1872 | ++index; | |
1873 | #endif | |
43ad3147 | 1874 | |
aa257fcd | 1875 | if (s[index] != 'L') |
252b5132 RH |
1876 | return s; |
1877 | ||
3882b010 | 1878 | for (label_number = 0, p = s + index + 1; ISDIGIT (*p); ++p) |
252b5132 RH |
1879 | label_number = (10 * label_number) + *p - '0'; |
1880 | ||
aa257fcd | 1881 | if (*p == DOLLAR_LABEL_CHAR) |
252b5132 | 1882 | type = "dollar"; |
aa257fcd | 1883 | else if (*p == LOCAL_LABEL_CHAR) |
252b5132 RH |
1884 | type = "fb"; |
1885 | else | |
1886 | return s; | |
1887 | ||
3882b010 | 1888 | for (instance_number = 0, p++; ISDIGIT (*p); ++p) |
252b5132 RH |
1889 | instance_number = (10 * instance_number) + *p - '0'; |
1890 | ||
d95767bf | 1891 | message_format = _("\"%d\" (instance number %d of a %s label)"); |
1e9cc1c2 | 1892 | symbol_decode = (char *) obstack_alloc (¬es, strlen (message_format) + 30); |
252b5132 RH |
1893 | sprintf (symbol_decode, message_format, label_number, instance_number, type); |
1894 | ||
1895 | return symbol_decode; | |
1896 | } | |
1897 | ||
1898 | /* Get the value of a symbol. */ | |
1899 | ||
1900 | valueT | |
74937d39 | 1901 | S_GET_VALUE (symbolS *s) |
252b5132 | 1902 | { |
49309057 | 1903 | if (LOCAL_SYMBOL_CHECK (s)) |
ac62c346 | 1904 | return resolve_symbol_value (s); |
49309057 | 1905 | |
ac62c346 | 1906 | if (!s->sy_resolved) |
e46d99eb | 1907 | { |
6386f3a7 AM |
1908 | valueT val = resolve_symbol_value (s); |
1909 | if (!finalize_syms) | |
e46d99eb AM |
1910 | return val; |
1911 | } | |
06e77878 AO |
1912 | if (S_IS_WEAKREFR (s)) |
1913 | return S_GET_VALUE (s->sy_value.X_add_symbol); | |
1914 | ||
252b5132 RH |
1915 | if (s->sy_value.X_op != O_constant) |
1916 | { | |
252b5132 RH |
1917 | if (! s->sy_resolved |
1918 | || s->sy_value.X_op != O_symbol | |
1919 | || (S_IS_DEFINED (s) && ! S_IS_COMMON (s))) | |
0e389e77 | 1920 | as_bad (_("attempt to get value of unresolved symbol `%s'"), |
252b5132 | 1921 | S_GET_NAME (s)); |
252b5132 RH |
1922 | } |
1923 | return (valueT) s->sy_value.X_add_number; | |
1924 | } | |
1925 | ||
1926 | /* Set the value of a symbol. */ | |
1927 | ||
1928 | void | |
74937d39 | 1929 | S_SET_VALUE (symbolS *s, valueT val) |
252b5132 | 1930 | { |
49309057 ILT |
1931 | if (LOCAL_SYMBOL_CHECK (s)) |
1932 | { | |
bd780143 | 1933 | ((struct local_symbol *) s)->lsy_value = val; |
49309057 ILT |
1934 | return; |
1935 | } | |
1936 | ||
252b5132 RH |
1937 | s->sy_value.X_op = O_constant; |
1938 | s->sy_value.X_add_number = (offsetT) val; | |
1939 | s->sy_value.X_unsigned = 0; | |
06e77878 | 1940 | S_CLEAR_WEAKREFR (s); |
252b5132 RH |
1941 | } |
1942 | ||
1943 | void | |
74937d39 | 1944 | copy_symbol_attributes (symbolS *dest, symbolS *src) |
252b5132 | 1945 | { |
49309057 | 1946 | if (LOCAL_SYMBOL_CHECK (dest)) |
7f2f689c | 1947 | dest = local_symbol_convert ((struct local_symbol *) dest); |
49309057 | 1948 | if (LOCAL_SYMBOL_CHECK (src)) |
7f2f689c | 1949 | src = local_symbol_convert ((struct local_symbol *) src); |
49309057 | 1950 | |
252b5132 RH |
1951 | /* In an expression, transfer the settings of these flags. |
1952 | The user can override later, of course. */ | |
ad04f5ce L |
1953 | #define COPIED_SYMFLAGS (BSF_FUNCTION | BSF_OBJECT \ |
1954 | | BSF_GNU_INDIRECT_FUNCTION) | |
252b5132 | 1955 | dest->bsym->flags |= src->bsym->flags & COPIED_SYMFLAGS; |
252b5132 RH |
1956 | |
1957 | #ifdef OBJ_COPY_SYMBOL_ATTRIBUTES | |
1958 | OBJ_COPY_SYMBOL_ATTRIBUTES (dest, src); | |
1959 | #endif | |
794ba86a DJ |
1960 | |
1961 | #ifdef TC_COPY_SYMBOL_ATTRIBUTES | |
1962 | TC_COPY_SYMBOL_ATTRIBUTES (dest, src); | |
1963 | #endif | |
252b5132 RH |
1964 | } |
1965 | ||
252b5132 | 1966 | int |
74937d39 | 1967 | S_IS_FUNCTION (symbolS *s) |
252b5132 | 1968 | { |
49309057 ILT |
1969 | flagword flags; |
1970 | ||
1971 | if (LOCAL_SYMBOL_CHECK (s)) | |
1972 | return 0; | |
1973 | ||
1974 | flags = s->bsym->flags; | |
252b5132 RH |
1975 | |
1976 | return (flags & BSF_FUNCTION) != 0; | |
1977 | } | |
1978 | ||
1979 | int | |
74937d39 | 1980 | S_IS_EXTERNAL (symbolS *s) |
252b5132 | 1981 | { |
49309057 ILT |
1982 | flagword flags; |
1983 | ||
1984 | if (LOCAL_SYMBOL_CHECK (s)) | |
1985 | return 0; | |
1986 | ||
1987 | flags = s->bsym->flags; | |
252b5132 | 1988 | |
7c743825 | 1989 | /* Sanity check. */ |
252b5132 RH |
1990 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
1991 | abort (); | |
1992 | ||
1993 | return (flags & BSF_GLOBAL) != 0; | |
1994 | } | |
1995 | ||
1996 | int | |
74937d39 | 1997 | S_IS_WEAK (symbolS *s) |
252b5132 | 1998 | { |
49309057 ILT |
1999 | if (LOCAL_SYMBOL_CHECK (s)) |
2000 | return 0; | |
06e77878 AO |
2001 | /* Conceptually, a weakrefr is weak if the referenced symbol is. We |
2002 | could probably handle a WEAKREFR as always weak though. E.g., if | |
2003 | the referenced symbol has lost its weak status, there's no reason | |
2004 | to keep handling the weakrefr as if it was weak. */ | |
2005 | if (S_IS_WEAKREFR (s)) | |
2006 | return S_IS_WEAK (s->sy_value.X_add_symbol); | |
252b5132 RH |
2007 | return (s->bsym->flags & BSF_WEAK) != 0; |
2008 | } | |
2009 | ||
06e77878 AO |
2010 | int |
2011 | S_IS_WEAKREFR (symbolS *s) | |
2012 | { | |
2013 | if (LOCAL_SYMBOL_CHECK (s)) | |
2014 | return 0; | |
2015 | return s->sy_weakrefr != 0; | |
2016 | } | |
2017 | ||
2018 | int | |
2019 | S_IS_WEAKREFD (symbolS *s) | |
2020 | { | |
2021 | if (LOCAL_SYMBOL_CHECK (s)) | |
2022 | return 0; | |
2023 | return s->sy_weakrefd != 0; | |
2024 | } | |
2025 | ||
252b5132 | 2026 | int |
74937d39 | 2027 | S_IS_COMMON (symbolS *s) |
252b5132 | 2028 | { |
49309057 ILT |
2029 | if (LOCAL_SYMBOL_CHECK (s)) |
2030 | return 0; | |
252b5132 RH |
2031 | return bfd_is_com_section (s->bsym->section); |
2032 | } | |
2033 | ||
2034 | int | |
74937d39 | 2035 | S_IS_DEFINED (symbolS *s) |
252b5132 | 2036 | { |
49309057 ILT |
2037 | if (LOCAL_SYMBOL_CHECK (s)) |
2038 | return ((struct local_symbol *) s)->lsy_section != undefined_section; | |
252b5132 RH |
2039 | return s->bsym->section != undefined_section; |
2040 | } | |
2041 | ||
a161fe53 AM |
2042 | |
2043 | #ifndef EXTERN_FORCE_RELOC | |
2044 | #define EXTERN_FORCE_RELOC IS_ELF | |
2045 | #endif | |
2046 | ||
2047 | /* Return true for symbols that should not be reduced to section | |
2048 | symbols or eliminated from expressions, because they may be | |
2049 | overridden by the linker. */ | |
2050 | int | |
74937d39 | 2051 | S_FORCE_RELOC (symbolS *s, int strict) |
a161fe53 AM |
2052 | { |
2053 | if (LOCAL_SYMBOL_CHECK (s)) | |
2054 | return ((struct local_symbol *) s)->lsy_section == undefined_section; | |
2055 | ||
ae6063d4 AM |
2056 | return ((strict |
2057 | && ((s->bsym->flags & BSF_WEAK) != 0 | |
af65af87 | 2058 | || (s->bsym->flags & BSF_GNU_INDIRECT_FUNCTION) != 0 |
ae6063d4 AM |
2059 | || (EXTERN_FORCE_RELOC |
2060 | && (s->bsym->flags & BSF_GLOBAL) != 0))) | |
a161fe53 AM |
2061 | || s->bsym->section == undefined_section |
2062 | || bfd_is_com_section (s->bsym->section)); | |
2063 | } | |
2064 | ||
252b5132 | 2065 | int |
74937d39 | 2066 | S_IS_DEBUG (symbolS *s) |
252b5132 | 2067 | { |
49309057 ILT |
2068 | if (LOCAL_SYMBOL_CHECK (s)) |
2069 | return 0; | |
252b5132 RH |
2070 | if (s->bsym->flags & BSF_DEBUGGING) |
2071 | return 1; | |
2072 | return 0; | |
2073 | } | |
2074 | ||
2075 | int | |
74937d39 | 2076 | S_IS_LOCAL (symbolS *s) |
252b5132 | 2077 | { |
49309057 | 2078 | flagword flags; |
252b5132 RH |
2079 | const char *name; |
2080 | ||
49309057 ILT |
2081 | if (LOCAL_SYMBOL_CHECK (s)) |
2082 | return 1; | |
2083 | ||
2084 | flags = s->bsym->flags; | |
2085 | ||
7c743825 | 2086 | /* Sanity check. */ |
252b5132 RH |
2087 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
2088 | abort (); | |
2089 | ||
2090 | if (bfd_get_section (s->bsym) == reg_section) | |
2091 | return 1; | |
2092 | ||
2093 | if (flag_strip_local_absolute | |
bb82af9f NC |
2094 | /* Keep BSF_FILE symbols in order to allow debuggers to identify |
2095 | the source file even when the object file is stripped. */ | |
2096 | && (flags & (BSF_GLOBAL | BSF_FILE)) == 0 | |
252b5132 RH |
2097 | && bfd_get_section (s->bsym) == absolute_section) |
2098 | return 1; | |
2099 | ||
2100 | name = S_GET_NAME (s); | |
2101 | return (name != NULL | |
2102 | && ! S_IS_DEBUG (s) | |
aa257fcd NC |
2103 | && (strchr (name, DOLLAR_LABEL_CHAR) |
2104 | || strchr (name, LOCAL_LABEL_CHAR) | |
252b5132 RH |
2105 | || (! flag_keep_locals |
2106 | && (bfd_is_local_label (stdoutput, s->bsym) | |
2107 | || (flag_mri | |
2108 | && name[0] == '?' | |
2109 | && name[1] == '?'))))); | |
2110 | } | |
2111 | ||
252b5132 | 2112 | int |
74937d39 | 2113 | S_IS_STABD (symbolS *s) |
252b5132 RH |
2114 | { |
2115 | return S_GET_NAME (s) == 0; | |
2116 | } | |
2117 | ||
9497f5ac NC |
2118 | int |
2119 | S_IS_VOLATILE (const symbolS *s) | |
2120 | { | |
2121 | if (LOCAL_SYMBOL_CHECK (s)) | |
2122 | return 0; | |
2123 | return s->sy_volatile; | |
2124 | } | |
2125 | ||
2126 | int | |
2127 | S_IS_FORWARD_REF (const symbolS *s) | |
2128 | { | |
2129 | if (LOCAL_SYMBOL_CHECK (s)) | |
2130 | return 0; | |
2131 | return s->sy_forward_ref; | |
2132 | } | |
2133 | ||
9758f3fc | 2134 | const char * |
74937d39 | 2135 | S_GET_NAME (symbolS *s) |
252b5132 | 2136 | { |
49309057 ILT |
2137 | if (LOCAL_SYMBOL_CHECK (s)) |
2138 | return ((struct local_symbol *) s)->lsy_name; | |
252b5132 RH |
2139 | return s->bsym->name; |
2140 | } | |
2141 | ||
2142 | segT | |
74937d39 | 2143 | S_GET_SEGMENT (symbolS *s) |
252b5132 | 2144 | { |
49309057 ILT |
2145 | if (LOCAL_SYMBOL_CHECK (s)) |
2146 | return ((struct local_symbol *) s)->lsy_section; | |
252b5132 RH |
2147 | return s->bsym->section; |
2148 | } | |
2149 | ||
2150 | void | |
74937d39 | 2151 | S_SET_SEGMENT (symbolS *s, segT seg) |
252b5132 RH |
2152 | { |
2153 | /* Don't reassign section symbols. The direct reason is to prevent seg | |
2154 | faults assigning back to const global symbols such as *ABS*, but it | |
2155 | shouldn't happen anyway. */ | |
2156 | ||
49309057 ILT |
2157 | if (LOCAL_SYMBOL_CHECK (s)) |
2158 | { | |
2159 | if (seg == reg_section) | |
2160 | s = local_symbol_convert ((struct local_symbol *) s); | |
2161 | else | |
2162 | { | |
2163 | ((struct local_symbol *) s)->lsy_section = seg; | |
2164 | return; | |
2165 | } | |
2166 | } | |
2167 | ||
252b5132 RH |
2168 | if (s->bsym->flags & BSF_SECTION_SYM) |
2169 | { | |
2170 | if (s->bsym->section != seg) | |
7c743825 | 2171 | abort (); |
252b5132 RH |
2172 | } |
2173 | else | |
2174 | s->bsym->section = seg; | |
2175 | } | |
2176 | ||
2177 | void | |
74937d39 | 2178 | S_SET_EXTERNAL (symbolS *s) |
252b5132 | 2179 | { |
49309057 ILT |
2180 | if (LOCAL_SYMBOL_CHECK (s)) |
2181 | s = local_symbol_convert ((struct local_symbol *) s); | |
252b5132 RH |
2182 | if ((s->bsym->flags & BSF_WEAK) != 0) |
2183 | { | |
2184 | /* Let .weak override .global. */ | |
2185 | return; | |
2186 | } | |
4d7c34bf NC |
2187 | if (s->bsym->flags & BSF_SECTION_SYM) |
2188 | { | |
2189 | char * file; | |
2190 | unsigned int line; | |
d1a6c242 | 2191 | |
4d7c34bf NC |
2192 | /* Do not reassign section symbols. */ |
2193 | as_where (& file, & line); | |
2194 | as_warn_where (file, line, | |
0e389e77 | 2195 | _("section symbols are already global")); |
4d7c34bf NC |
2196 | return; |
2197 | } | |
97c4f2d9 | 2198 | #ifndef TC_GLOBAL_REGISTER_SYMBOL_OK |
d0548f34 L |
2199 | if (S_GET_SEGMENT (s) == reg_section) |
2200 | { | |
2201 | as_bad ("can't make register symbol `%s' global", | |
2202 | S_GET_NAME (s)); | |
2203 | return; | |
2204 | } | |
97c4f2d9 | 2205 | #endif |
252b5132 | 2206 | s->bsym->flags |= BSF_GLOBAL; |
7c743825 | 2207 | s->bsym->flags &= ~(BSF_LOCAL | BSF_WEAK); |
977cdf5a | 2208 | |
22ba0981 | 2209 | #ifdef TE_PE |
977cdf5a NC |
2210 | if (! an_external_name && S_GET_NAME(s)[0] != '.') |
2211 | an_external_name = S_GET_NAME (s); | |
2212 | #endif | |
252b5132 RH |
2213 | } |
2214 | ||
2215 | void | |
74937d39 | 2216 | S_CLEAR_EXTERNAL (symbolS *s) |
252b5132 | 2217 | { |
49309057 ILT |
2218 | if (LOCAL_SYMBOL_CHECK (s)) |
2219 | return; | |
252b5132 RH |
2220 | if ((s->bsym->flags & BSF_WEAK) != 0) |
2221 | { | |
2222 | /* Let .weak override. */ | |
2223 | return; | |
2224 | } | |
2225 | s->bsym->flags |= BSF_LOCAL; | |
7c743825 | 2226 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_WEAK); |
252b5132 RH |
2227 | } |
2228 | ||
2229 | void | |
74937d39 | 2230 | S_SET_WEAK (symbolS *s) |
252b5132 | 2231 | { |
49309057 ILT |
2232 | if (LOCAL_SYMBOL_CHECK (s)) |
2233 | s = local_symbol_convert ((struct local_symbol *) s); | |
06e77878 AO |
2234 | #ifdef obj_set_weak_hook |
2235 | obj_set_weak_hook (s); | |
2236 | #endif | |
252b5132 | 2237 | s->bsym->flags |= BSF_WEAK; |
7c743825 | 2238 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_LOCAL); |
252b5132 RH |
2239 | } |
2240 | ||
06e77878 AO |
2241 | void |
2242 | S_SET_WEAKREFR (symbolS *s) | |
2243 | { | |
2244 | if (LOCAL_SYMBOL_CHECK (s)) | |
2245 | s = local_symbol_convert ((struct local_symbol *) s); | |
2246 | s->sy_weakrefr = 1; | |
2247 | /* If the alias was already used, make sure we mark the target as | |
2248 | used as well, otherwise it might be dropped from the symbol | |
2249 | table. This may have unintended side effects if the alias is | |
2250 | later redirected to another symbol, such as keeping the unused | |
2251 | previous target in the symbol table. Since it will be weak, it's | |
2252 | not a big deal. */ | |
2253 | if (s->sy_used) | |
2254 | symbol_mark_used (s->sy_value.X_add_symbol); | |
2255 | } | |
2256 | ||
2257 | void | |
2258 | S_CLEAR_WEAKREFR (symbolS *s) | |
2259 | { | |
2260 | if (LOCAL_SYMBOL_CHECK (s)) | |
2261 | return; | |
2262 | s->sy_weakrefr = 0; | |
2263 | } | |
2264 | ||
2265 | void | |
2266 | S_SET_WEAKREFD (symbolS *s) | |
2267 | { | |
2268 | if (LOCAL_SYMBOL_CHECK (s)) | |
2269 | s = local_symbol_convert ((struct local_symbol *) s); | |
2270 | s->sy_weakrefd = 1; | |
2271 | S_SET_WEAK (s); | |
2272 | } | |
2273 | ||
2274 | void | |
2275 | S_CLEAR_WEAKREFD (symbolS *s) | |
2276 | { | |
2277 | if (LOCAL_SYMBOL_CHECK (s)) | |
2278 | return; | |
2279 | if (s->sy_weakrefd) | |
2280 | { | |
2281 | s->sy_weakrefd = 0; | |
2282 | /* If a weakref target symbol is weak, then it was never | |
2283 | referenced directly before, not even in a .global directive, | |
2284 | so decay it to local. If it remains undefined, it will be | |
2285 | later turned into a global, like any other undefined | |
2286 | symbol. */ | |
2287 | if (s->bsym->flags & BSF_WEAK) | |
2288 | { | |
2289 | #ifdef obj_clear_weak_hook | |
2290 | obj_clear_weak_hook (s); | |
2291 | #endif | |
2292 | s->bsym->flags &= ~BSF_WEAK; | |
2293 | s->bsym->flags |= BSF_LOCAL; | |
2294 | } | |
2295 | } | |
2296 | } | |
2297 | ||
00f7efb6 | 2298 | void |
74937d39 | 2299 | S_SET_THREAD_LOCAL (symbolS *s) |
00f7efb6 JJ |
2300 | { |
2301 | if (LOCAL_SYMBOL_CHECK (s)) | |
2302 | s = local_symbol_convert ((struct local_symbol *) s); | |
2303 | if (bfd_is_com_section (s->bsym->section) | |
2304 | && (s->bsym->flags & BSF_THREAD_LOCAL) != 0) | |
2305 | return; | |
2306 | s->bsym->flags |= BSF_THREAD_LOCAL; | |
2307 | if ((s->bsym->flags & BSF_FUNCTION) != 0) | |
2308 | as_bad (_("Accessing function `%s' as thread-local object"), | |
2309 | S_GET_NAME (s)); | |
2310 | else if (! bfd_is_und_section (s->bsym->section) | |
2311 | && (s->bsym->section->flags & SEC_THREAD_LOCAL) == 0) | |
2312 | as_bad (_("Accessing `%s' as thread-local object"), | |
2313 | S_GET_NAME (s)); | |
2314 | } | |
2315 | ||
252b5132 | 2316 | void |
977cdf5a | 2317 | S_SET_NAME (symbolS *s, const char *name) |
252b5132 | 2318 | { |
49309057 ILT |
2319 | if (LOCAL_SYMBOL_CHECK (s)) |
2320 | { | |
2321 | ((struct local_symbol *) s)->lsy_name = name; | |
2322 | return; | |
2323 | } | |
252b5132 RH |
2324 | s->bsym->name = name; |
2325 | } | |
49309057 | 2326 | |
9497f5ac NC |
2327 | void |
2328 | S_SET_VOLATILE (symbolS *s) | |
2329 | { | |
2330 | if (LOCAL_SYMBOL_CHECK (s)) | |
2331 | s = local_symbol_convert ((struct local_symbol *) s); | |
2332 | s->sy_volatile = 1; | |
2333 | } | |
2334 | ||
92757bc9 JB |
2335 | void |
2336 | S_CLEAR_VOLATILE (symbolS *s) | |
2337 | { | |
2338 | if (!LOCAL_SYMBOL_CHECK (s)) | |
2339 | s->sy_volatile = 0; | |
2340 | } | |
2341 | ||
9497f5ac NC |
2342 | void |
2343 | S_SET_FORWARD_REF (symbolS *s) | |
2344 | { | |
2345 | if (LOCAL_SYMBOL_CHECK (s)) | |
2346 | s = local_symbol_convert ((struct local_symbol *) s); | |
2347 | s->sy_forward_ref = 1; | |
2348 | } | |
2349 | ||
49309057 ILT |
2350 | /* Return the previous symbol in a chain. */ |
2351 | ||
2352 | symbolS * | |
74937d39 | 2353 | symbol_previous (symbolS *s) |
49309057 ILT |
2354 | { |
2355 | if (LOCAL_SYMBOL_CHECK (s)) | |
2356 | abort (); | |
2357 | return s->sy_previous; | |
2358 | } | |
2359 | ||
49309057 ILT |
2360 | /* Return the next symbol in a chain. */ |
2361 | ||
2362 | symbolS * | |
74937d39 | 2363 | symbol_next (symbolS *s) |
49309057 ILT |
2364 | { |
2365 | if (LOCAL_SYMBOL_CHECK (s)) | |
2366 | abort (); | |
2367 | return s->sy_next; | |
2368 | } | |
2369 | ||
2370 | /* Return a pointer to the value of a symbol as an expression. */ | |
2371 | ||
2372 | expressionS * | |
74937d39 | 2373 | symbol_get_value_expression (symbolS *s) |
49309057 ILT |
2374 | { |
2375 | if (LOCAL_SYMBOL_CHECK (s)) | |
2376 | s = local_symbol_convert ((struct local_symbol *) s); | |
2377 | return &s->sy_value; | |
2378 | } | |
2379 | ||
2380 | /* Set the value of a symbol to an expression. */ | |
2381 | ||
2382 | void | |
74937d39 | 2383 | symbol_set_value_expression (symbolS *s, const expressionS *exp) |
49309057 ILT |
2384 | { |
2385 | if (LOCAL_SYMBOL_CHECK (s)) | |
2386 | s = local_symbol_convert ((struct local_symbol *) s); | |
2387 | s->sy_value = *exp; | |
06e77878 | 2388 | S_CLEAR_WEAKREFR (s); |
49309057 ILT |
2389 | } |
2390 | ||
be95a9c1 AM |
2391 | /* Return a pointer to the X_add_number component of a symbol. */ |
2392 | ||
514d955d | 2393 | offsetT * |
be95a9c1 AM |
2394 | symbol_X_add_number (symbolS *s) |
2395 | { | |
be95a9c1 | 2396 | if (LOCAL_SYMBOL_CHECK (s)) |
514d955d | 2397 | return (offsetT *) &((struct local_symbol *) s)->lsy_value; |
be95a9c1 | 2398 | |
514d955d | 2399 | return &s->sy_value.X_add_number; |
be95a9c1 AM |
2400 | } |
2401 | ||
b7d6ed97 RH |
2402 | /* Set the value of SYM to the current position in the current segment. */ |
2403 | ||
2404 | void | |
74937d39 | 2405 | symbol_set_value_now (symbolS *sym) |
b7d6ed97 RH |
2406 | { |
2407 | S_SET_SEGMENT (sym, now_seg); | |
2408 | S_SET_VALUE (sym, frag_now_fix ()); | |
2409 | symbol_set_frag (sym, frag_now); | |
2410 | } | |
2411 | ||
49309057 ILT |
2412 | /* Set the frag of a symbol. */ |
2413 | ||
2414 | void | |
74937d39 | 2415 | symbol_set_frag (symbolS *s, fragS *f) |
49309057 ILT |
2416 | { |
2417 | if (LOCAL_SYMBOL_CHECK (s)) | |
2418 | { | |
2419 | local_symbol_set_frag ((struct local_symbol *) s, f); | |
2420 | return; | |
2421 | } | |
2422 | s->sy_frag = f; | |
06e77878 | 2423 | S_CLEAR_WEAKREFR (s); |
49309057 ILT |
2424 | } |
2425 | ||
2426 | /* Return the frag of a symbol. */ | |
2427 | ||
2428 | fragS * | |
74937d39 | 2429 | symbol_get_frag (symbolS *s) |
49309057 ILT |
2430 | { |
2431 | if (LOCAL_SYMBOL_CHECK (s)) | |
2432 | return local_symbol_get_frag ((struct local_symbol *) s); | |
2433 | return s->sy_frag; | |
2434 | } | |
2435 | ||
2436 | /* Mark a symbol as having been used. */ | |
2437 | ||
2438 | void | |
74937d39 | 2439 | symbol_mark_used (symbolS *s) |
49309057 ILT |
2440 | { |
2441 | if (LOCAL_SYMBOL_CHECK (s)) | |
2442 | return; | |
2443 | s->sy_used = 1; | |
06e77878 AO |
2444 | if (S_IS_WEAKREFR (s)) |
2445 | symbol_mark_used (s->sy_value.X_add_symbol); | |
49309057 ILT |
2446 | } |
2447 | ||
2448 | /* Clear the mark of whether a symbol has been used. */ | |
2449 | ||
2450 | void | |
74937d39 | 2451 | symbol_clear_used (symbolS *s) |
49309057 ILT |
2452 | { |
2453 | if (LOCAL_SYMBOL_CHECK (s)) | |
2454 | s = local_symbol_convert ((struct local_symbol *) s); | |
2455 | s->sy_used = 0; | |
2456 | } | |
2457 | ||
2458 | /* Return whether a symbol has been used. */ | |
2459 | ||
2460 | int | |
74937d39 | 2461 | symbol_used_p (symbolS *s) |
49309057 ILT |
2462 | { |
2463 | if (LOCAL_SYMBOL_CHECK (s)) | |
2464 | return 1; | |
2465 | return s->sy_used; | |
2466 | } | |
2467 | ||
2468 | /* Mark a symbol as having been used in a reloc. */ | |
2469 | ||
2470 | void | |
74937d39 | 2471 | symbol_mark_used_in_reloc (symbolS *s) |
49309057 ILT |
2472 | { |
2473 | if (LOCAL_SYMBOL_CHECK (s)) | |
2474 | s = local_symbol_convert ((struct local_symbol *) s); | |
2475 | s->sy_used_in_reloc = 1; | |
2476 | } | |
2477 | ||
2478 | /* Clear the mark of whether a symbol has been used in a reloc. */ | |
2479 | ||
2480 | void | |
74937d39 | 2481 | symbol_clear_used_in_reloc (symbolS *s) |
49309057 ILT |
2482 | { |
2483 | if (LOCAL_SYMBOL_CHECK (s)) | |
2484 | return; | |
2485 | s->sy_used_in_reloc = 0; | |
2486 | } | |
2487 | ||
2488 | /* Return whether a symbol has been used in a reloc. */ | |
2489 | ||
2490 | int | |
74937d39 | 2491 | symbol_used_in_reloc_p (symbolS *s) |
49309057 ILT |
2492 | { |
2493 | if (LOCAL_SYMBOL_CHECK (s)) | |
2494 | return 0; | |
2495 | return s->sy_used_in_reloc; | |
2496 | } | |
2497 | ||
2498 | /* Mark a symbol as an MRI common symbol. */ | |
2499 | ||
2500 | void | |
74937d39 | 2501 | symbol_mark_mri_common (symbolS *s) |
49309057 ILT |
2502 | { |
2503 | if (LOCAL_SYMBOL_CHECK (s)) | |
2504 | s = local_symbol_convert ((struct local_symbol *) s); | |
2505 | s->sy_mri_common = 1; | |
2506 | } | |
2507 | ||
2508 | /* Clear the mark of whether a symbol is an MRI common symbol. */ | |
2509 | ||
2510 | void | |
74937d39 | 2511 | symbol_clear_mri_common (symbolS *s) |
49309057 ILT |
2512 | { |
2513 | if (LOCAL_SYMBOL_CHECK (s)) | |
2514 | return; | |
2515 | s->sy_mri_common = 0; | |
2516 | } | |
2517 | ||
2518 | /* Return whether a symbol is an MRI common symbol. */ | |
2519 | ||
2520 | int | |
74937d39 | 2521 | symbol_mri_common_p (symbolS *s) |
49309057 ILT |
2522 | { |
2523 | if (LOCAL_SYMBOL_CHECK (s)) | |
2524 | return 0; | |
2525 | return s->sy_mri_common; | |
2526 | } | |
2527 | ||
2528 | /* Mark a symbol as having been written. */ | |
2529 | ||
2530 | void | |
74937d39 | 2531 | symbol_mark_written (symbolS *s) |
49309057 ILT |
2532 | { |
2533 | if (LOCAL_SYMBOL_CHECK (s)) | |
2534 | return; | |
2535 | s->written = 1; | |
2536 | } | |
2537 | ||
2538 | /* Clear the mark of whether a symbol has been written. */ | |
2539 | ||
2540 | void | |
74937d39 | 2541 | symbol_clear_written (symbolS *s) |
49309057 ILT |
2542 | { |
2543 | if (LOCAL_SYMBOL_CHECK (s)) | |
2544 | return; | |
2545 | s->written = 0; | |
2546 | } | |
2547 | ||
2548 | /* Return whether a symbol has been written. */ | |
2549 | ||
2550 | int | |
74937d39 | 2551 | symbol_written_p (symbolS *s) |
49309057 ILT |
2552 | { |
2553 | if (LOCAL_SYMBOL_CHECK (s)) | |
2554 | return 0; | |
2555 | return s->written; | |
2556 | } | |
2557 | ||
2558 | /* Mark a symbol has having been resolved. */ | |
2559 | ||
2560 | void | |
74937d39 | 2561 | symbol_mark_resolved (symbolS *s) |
49309057 ILT |
2562 | { |
2563 | if (LOCAL_SYMBOL_CHECK (s)) | |
2564 | { | |
2565 | local_symbol_mark_resolved ((struct local_symbol *) s); | |
2566 | return; | |
2567 | } | |
2568 | s->sy_resolved = 1; | |
2569 | } | |
2570 | ||
2571 | /* Return whether a symbol has been resolved. */ | |
2572 | ||
2573 | int | |
74937d39 | 2574 | symbol_resolved_p (symbolS *s) |
49309057 ILT |
2575 | { |
2576 | if (LOCAL_SYMBOL_CHECK (s)) | |
2577 | return local_symbol_resolved_p ((struct local_symbol *) s); | |
2578 | return s->sy_resolved; | |
2579 | } | |
2580 | ||
2581 | /* Return whether a symbol is a section symbol. */ | |
2582 | ||
2583 | int | |
74937d39 | 2584 | symbol_section_p (symbolS *s ATTRIBUTE_UNUSED) |
49309057 ILT |
2585 | { |
2586 | if (LOCAL_SYMBOL_CHECK (s)) | |
2587 | return 0; | |
49309057 | 2588 | return (s->bsym->flags & BSF_SECTION_SYM) != 0; |
49309057 ILT |
2589 | } |
2590 | ||
2591 | /* Return whether a symbol is equated to another symbol. */ | |
2592 | ||
2593 | int | |
74937d39 | 2594 | symbol_equated_p (symbolS *s) |
49309057 ILT |
2595 | { |
2596 | if (LOCAL_SYMBOL_CHECK (s)) | |
2597 | return 0; | |
2598 | return s->sy_value.X_op == O_symbol; | |
2599 | } | |
2600 | ||
e0890092 AM |
2601 | /* Return whether a symbol is equated to another symbol, and should be |
2602 | treated specially when writing out relocs. */ | |
2603 | ||
2604 | int | |
74937d39 | 2605 | symbol_equated_reloc_p (symbolS *s) |
e0890092 AM |
2606 | { |
2607 | if (LOCAL_SYMBOL_CHECK (s)) | |
2608 | return 0; | |
2609 | /* X_op_symbol, normally not used for O_symbol, is set by | |
2610 | resolve_symbol_value to flag expression syms that have been | |
2611 | equated. */ | |
2612 | return (s->sy_value.X_op == O_symbol | |
7be1c489 | 2613 | #if defined (OBJ_COFF) && defined (TE_PE) |
977cdf5a NC |
2614 | && ! S_IS_WEAK (s) |
2615 | #endif | |
e0890092 AM |
2616 | && ((s->sy_resolved && s->sy_value.X_op_symbol != NULL) |
2617 | || ! S_IS_DEFINED (s) | |
2618 | || S_IS_COMMON (s))); | |
2619 | } | |
2620 | ||
49309057 ILT |
2621 | /* Return whether a symbol has a constant value. */ |
2622 | ||
2623 | int | |
74937d39 | 2624 | symbol_constant_p (symbolS *s) |
49309057 ILT |
2625 | { |
2626 | if (LOCAL_SYMBOL_CHECK (s)) | |
2627 | return 1; | |
2628 | return s->sy_value.X_op == O_constant; | |
2629 | } | |
2630 | ||
bdf128d6 JB |
2631 | /* Return whether a symbol was cloned and thus removed from the global |
2632 | symbol list. */ | |
2633 | ||
2634 | int | |
2635 | symbol_shadow_p (symbolS *s) | |
2636 | { | |
2637 | if (LOCAL_SYMBOL_CHECK (s)) | |
2638 | return 0; | |
2639 | return s->sy_next == s; | |
2640 | } | |
2641 | ||
49309057 ILT |
2642 | /* Return the BFD symbol for a symbol. */ |
2643 | ||
2644 | asymbol * | |
74937d39 | 2645 | symbol_get_bfdsym (symbolS *s) |
49309057 ILT |
2646 | { |
2647 | if (LOCAL_SYMBOL_CHECK (s)) | |
2648 | s = local_symbol_convert ((struct local_symbol *) s); | |
2649 | return s->bsym; | |
2650 | } | |
2651 | ||
2652 | /* Set the BFD symbol for a symbol. */ | |
2653 | ||
2654 | void | |
74937d39 | 2655 | symbol_set_bfdsym (symbolS *s, asymbol *bsym) |
49309057 ILT |
2656 | { |
2657 | if (LOCAL_SYMBOL_CHECK (s)) | |
2658 | s = local_symbol_convert ((struct local_symbol *) s); | |
22fe14ad NC |
2659 | /* Usually, it is harmless to reset a symbol to a BFD section |
2660 | symbol. For example, obj_elf_change_section sets the BFD symbol | |
2661 | of an old symbol with the newly created section symbol. But when | |
2662 | we have multiple sections with the same name, the newly created | |
2663 | section may have the same name as an old section. We check if the | |
2664 | old symbol has been already marked as a section symbol before | |
2665 | resetting it. */ | |
2666 | if ((s->bsym->flags & BSF_SECTION_SYM) == 0) | |
2667 | s->bsym = bsym; | |
2668 | /* else XXX - What do we do now ? */ | |
49309057 ILT |
2669 | } |
2670 | ||
49309057 ILT |
2671 | #ifdef OBJ_SYMFIELD_TYPE |
2672 | ||
2673 | /* Get a pointer to the object format information for a symbol. */ | |
2674 | ||
2675 | OBJ_SYMFIELD_TYPE * | |
74937d39 | 2676 | symbol_get_obj (symbolS *s) |
49309057 ILT |
2677 | { |
2678 | if (LOCAL_SYMBOL_CHECK (s)) | |
2679 | s = local_symbol_convert ((struct local_symbol *) s); | |
2680 | return &s->sy_obj; | |
2681 | } | |
2682 | ||
2683 | /* Set the object format information for a symbol. */ | |
2684 | ||
2685 | void | |
74937d39 | 2686 | symbol_set_obj (symbolS *s, OBJ_SYMFIELD_TYPE *o) |
49309057 ILT |
2687 | { |
2688 | if (LOCAL_SYMBOL_CHECK (s)) | |
2689 | s = local_symbol_convert ((struct local_symbol *) s); | |
2690 | s->sy_obj = *o; | |
2691 | } | |
2692 | ||
2693 | #endif /* OBJ_SYMFIELD_TYPE */ | |
2694 | ||
2695 | #ifdef TC_SYMFIELD_TYPE | |
2696 | ||
2697 | /* Get a pointer to the processor information for a symbol. */ | |
2698 | ||
2699 | TC_SYMFIELD_TYPE * | |
74937d39 | 2700 | symbol_get_tc (symbolS *s) |
49309057 ILT |
2701 | { |
2702 | if (LOCAL_SYMBOL_CHECK (s)) | |
2703 | s = local_symbol_convert ((struct local_symbol *) s); | |
2704 | return &s->sy_tc; | |
2705 | } | |
2706 | ||
2707 | /* Set the processor information for a symbol. */ | |
2708 | ||
2709 | void | |
74937d39 | 2710 | symbol_set_tc (symbolS *s, TC_SYMFIELD_TYPE *o) |
49309057 ILT |
2711 | { |
2712 | if (LOCAL_SYMBOL_CHECK (s)) | |
2713 | s = local_symbol_convert ((struct local_symbol *) s); | |
2714 | s->sy_tc = *o; | |
2715 | } | |
2716 | ||
2717 | #endif /* TC_SYMFIELD_TYPE */ | |
2718 | ||
252b5132 | 2719 | void |
74937d39 | 2720 | symbol_begin (void) |
252b5132 RH |
2721 | { |
2722 | symbol_lastP = NULL; | |
7c743825 | 2723 | symbol_rootP = NULL; /* In case we have 0 symbols (!!) */ |
252b5132 | 2724 | sy_hash = hash_new (); |
49309057 | 2725 | local_hash = hash_new (); |
252b5132 RH |
2726 | |
2727 | memset ((char *) (&abs_symbol), '\0', sizeof (abs_symbol)); | |
252b5132 RH |
2728 | #if defined (EMIT_SECTION_SYMBOLS) || !defined (RELOC_REQUIRES_SYMBOL) |
2729 | abs_symbol.bsym = bfd_abs_section.symbol; | |
252b5132 RH |
2730 | #endif |
2731 | abs_symbol.sy_value.X_op = O_constant; | |
2732 | abs_symbol.sy_frag = &zero_address_frag; | |
2733 | ||
2734 | if (LOCAL_LABELS_FB) | |
2735 | fb_label_init (); | |
2736 | } | |
252b5132 RH |
2737 | \f |
2738 | int indent_level; | |
2739 | ||
2740 | /* Maximum indent level. | |
2741 | Available for modification inside a gdb session. */ | |
87c245cc | 2742 | static int max_indent_level = 8; |
252b5132 | 2743 | |
252b5132 | 2744 | void |
74937d39 | 2745 | print_symbol_value_1 (FILE *file, symbolS *sym) |
252b5132 RH |
2746 | { |
2747 | const char *name = S_GET_NAME (sym); | |
2748 | if (!name || !name[0]) | |
2749 | name = "(unnamed)"; | |
d2df793a NC |
2750 | fprintf (file, "sym "); |
2751 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) sym)); | |
2752 | fprintf (file, " %s", name); | |
49309057 ILT |
2753 | |
2754 | if (LOCAL_SYMBOL_CHECK (sym)) | |
2755 | { | |
2756 | struct local_symbol *locsym = (struct local_symbol *) sym; | |
d2df793a NC |
2757 | |
2758 | if (local_symbol_get_frag (locsym) != & zero_address_frag | |
49309057 | 2759 | && local_symbol_get_frag (locsym) != NULL) |
d2df793a NC |
2760 | { |
2761 | fprintf (file, " frag "); | |
2762 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) local_symbol_get_frag (locsym))); | |
2763 | } | |
49309057 ILT |
2764 | if (local_symbol_resolved_p (locsym)) |
2765 | fprintf (file, " resolved"); | |
2766 | fprintf (file, " local"); | |
2767 | } | |
2768 | else | |
2769 | { | |
2770 | if (sym->sy_frag != &zero_address_frag) | |
d2df793a NC |
2771 | { |
2772 | fprintf (file, " frag "); | |
2773 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) sym->sy_frag)); | |
2774 | } | |
49309057 ILT |
2775 | if (sym->written) |
2776 | fprintf (file, " written"); | |
2777 | if (sym->sy_resolved) | |
2778 | fprintf (file, " resolved"); | |
2779 | else if (sym->sy_resolving) | |
2780 | fprintf (file, " resolving"); | |
2781 | if (sym->sy_used_in_reloc) | |
2782 | fprintf (file, " used-in-reloc"); | |
2783 | if (sym->sy_used) | |
2784 | fprintf (file, " used"); | |
2785 | if (S_IS_LOCAL (sym)) | |
2786 | fprintf (file, " local"); | |
e97b3f28 | 2787 | if (S_IS_EXTERNAL (sym)) |
49309057 | 2788 | fprintf (file, " extern"); |
06e77878 AO |
2789 | if (S_IS_WEAK (sym)) |
2790 | fprintf (file, " weak"); | |
49309057 ILT |
2791 | if (S_IS_DEBUG (sym)) |
2792 | fprintf (file, " debug"); | |
2793 | if (S_IS_DEFINED (sym)) | |
2794 | fprintf (file, " defined"); | |
2795 | } | |
06e77878 AO |
2796 | if (S_IS_WEAKREFR (sym)) |
2797 | fprintf (file, " weakrefr"); | |
2798 | if (S_IS_WEAKREFD (sym)) | |
2799 | fprintf (file, " weakrefd"); | |
252b5132 | 2800 | fprintf (file, " %s", segment_name (S_GET_SEGMENT (sym))); |
49309057 | 2801 | if (symbol_resolved_p (sym)) |
252b5132 RH |
2802 | { |
2803 | segT s = S_GET_SEGMENT (sym); | |
2804 | ||
2805 | if (s != undefined_section | |
411863a4 | 2806 | && s != expr_section) |
0af1713e | 2807 | fprintf (file, " %lx", (unsigned long) S_GET_VALUE (sym)); |
252b5132 RH |
2808 | } |
2809 | else if (indent_level < max_indent_level | |
2810 | && S_GET_SEGMENT (sym) != undefined_section) | |
2811 | { | |
2812 | indent_level++; | |
2813 | fprintf (file, "\n%*s<", indent_level * 4, ""); | |
49309057 ILT |
2814 | if (LOCAL_SYMBOL_CHECK (sym)) |
2815 | fprintf (file, "constant %lx", | |
0af1713e | 2816 | (unsigned long) ((struct local_symbol *) sym)->lsy_value); |
49309057 ILT |
2817 | else |
2818 | print_expr_1 (file, &sym->sy_value); | |
252b5132 RH |
2819 | fprintf (file, ">"); |
2820 | indent_level--; | |
2821 | } | |
2822 | fflush (file); | |
2823 | } | |
2824 | ||
2825 | void | |
74937d39 | 2826 | print_symbol_value (symbolS *sym) |
252b5132 RH |
2827 | { |
2828 | indent_level = 0; | |
2829 | print_symbol_value_1 (stderr, sym); | |
2830 | fprintf (stderr, "\n"); | |
2831 | } | |
2832 | ||
2833 | static void | |
74937d39 | 2834 | print_binary (FILE *file, const char *name, expressionS *exp) |
252b5132 RH |
2835 | { |
2836 | indent_level++; | |
2837 | fprintf (file, "%s\n%*s<", name, indent_level * 4, ""); | |
2838 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2839 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2840 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2841 | fprintf (file, ">"); | |
2842 | indent_level--; | |
2843 | } | |
2844 | ||
2845 | void | |
74937d39 | 2846 | print_expr_1 (FILE *file, expressionS *exp) |
252b5132 | 2847 | { |
d2df793a NC |
2848 | fprintf (file, "expr "); |
2849 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) exp)); | |
2850 | fprintf (file, " "); | |
252b5132 RH |
2851 | switch (exp->X_op) |
2852 | { | |
2853 | case O_illegal: | |
2854 | fprintf (file, "illegal"); | |
2855 | break; | |
2856 | case O_absent: | |
2857 | fprintf (file, "absent"); | |
2858 | break; | |
2859 | case O_constant: | |
0af1713e | 2860 | fprintf (file, "constant %lx", (unsigned long) exp->X_add_number); |
252b5132 RH |
2861 | break; |
2862 | case O_symbol: | |
2863 | indent_level++; | |
2864 | fprintf (file, "symbol\n%*s<", indent_level * 4, ""); | |
2865 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2866 | fprintf (file, ">"); | |
2867 | maybe_print_addnum: | |
2868 | if (exp->X_add_number) | |
2869 | fprintf (file, "\n%*s%lx", indent_level * 4, "", | |
0af1713e | 2870 | (unsigned long) exp->X_add_number); |
252b5132 RH |
2871 | indent_level--; |
2872 | break; | |
2873 | case O_register: | |
2874 | fprintf (file, "register #%d", (int) exp->X_add_number); | |
2875 | break; | |
2876 | case O_big: | |
2877 | fprintf (file, "big"); | |
2878 | break; | |
2879 | case O_uminus: | |
2880 | fprintf (file, "uminus -<"); | |
2881 | indent_level++; | |
2882 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2883 | fprintf (file, ">"); | |
2884 | goto maybe_print_addnum; | |
2885 | case O_bit_not: | |
2886 | fprintf (file, "bit_not"); | |
2887 | break; | |
2888 | case O_multiply: | |
2889 | print_binary (file, "multiply", exp); | |
2890 | break; | |
2891 | case O_divide: | |
2892 | print_binary (file, "divide", exp); | |
2893 | break; | |
2894 | case O_modulus: | |
2895 | print_binary (file, "modulus", exp); | |
2896 | break; | |
2897 | case O_left_shift: | |
2898 | print_binary (file, "lshift", exp); | |
2899 | break; | |
2900 | case O_right_shift: | |
2901 | print_binary (file, "rshift", exp); | |
2902 | break; | |
2903 | case O_bit_inclusive_or: | |
2904 | print_binary (file, "bit_ior", exp); | |
2905 | break; | |
2906 | case O_bit_exclusive_or: | |
2907 | print_binary (file, "bit_xor", exp); | |
2908 | break; | |
2909 | case O_bit_and: | |
2910 | print_binary (file, "bit_and", exp); | |
2911 | break; | |
2912 | case O_eq: | |
2913 | print_binary (file, "eq", exp); | |
2914 | break; | |
2915 | case O_ne: | |
2916 | print_binary (file, "ne", exp); | |
2917 | break; | |
2918 | case O_lt: | |
2919 | print_binary (file, "lt", exp); | |
2920 | break; | |
2921 | case O_le: | |
2922 | print_binary (file, "le", exp); | |
2923 | break; | |
2924 | case O_ge: | |
2925 | print_binary (file, "ge", exp); | |
2926 | break; | |
2927 | case O_gt: | |
2928 | print_binary (file, "gt", exp); | |
2929 | break; | |
2930 | case O_logical_and: | |
2931 | print_binary (file, "logical_and", exp); | |
2932 | break; | |
2933 | case O_logical_or: | |
2934 | print_binary (file, "logical_or", exp); | |
2935 | break; | |
2936 | case O_add: | |
2937 | indent_level++; | |
2938 | fprintf (file, "add\n%*s<", indent_level * 4, ""); | |
2939 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2940 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2941 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2942 | fprintf (file, ">"); | |
2943 | goto maybe_print_addnum; | |
2944 | case O_subtract: | |
2945 | indent_level++; | |
2946 | fprintf (file, "subtract\n%*s<", indent_level * 4, ""); | |
2947 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2948 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2949 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2950 | fprintf (file, ">"); | |
2951 | goto maybe_print_addnum; | |
2952 | default: | |
2953 | fprintf (file, "{unknown opcode %d}", (int) exp->X_op); | |
2954 | break; | |
2955 | } | |
2956 | fflush (stdout); | |
2957 | } | |
2958 | ||
2959 | void | |
74937d39 | 2960 | print_expr (expressionS *exp) |
252b5132 RH |
2961 | { |
2962 | print_expr_1 (stderr, exp); | |
2963 | fprintf (stderr, "\n"); | |
2964 | } | |
2965 | ||
2966 | void | |
74937d39 | 2967 | symbol_print_statistics (FILE *file) |
252b5132 RH |
2968 | { |
2969 | hash_print_statistics (file, "symbol table", sy_hash); | |
49309057 ILT |
2970 | hash_print_statistics (file, "mini local symbol table", local_hash); |
2971 | fprintf (file, "%lu mini local symbols created, %lu converted\n", | |
2972 | local_symbol_count, local_symbol_conversion_count); | |
252b5132 | 2973 | } |
280d71bf DB |
2974 | |
2975 | #ifdef OBJ_COMPLEX_RELC | |
2976 | ||
2977 | /* Convert given symbol to a new complex-relocation symbol name. This | |
6f12865c | 2978 | may be a recursive function, since it might be called for non-leaf |
280d71bf | 2979 | nodes (plain symbols) in the expression tree. The caller owns the |
6f12865c AM |
2980 | returning string, so should free it eventually. Errors are |
2981 | indicated via as_bad and a NULL return value. The given symbol | |
280d71bf DB |
2982 | is marked with sy_used_in_reloc. */ |
2983 | ||
2984 | char * | |
2985 | symbol_relc_make_sym (symbolS * sym) | |
2986 | { | |
2987 | char * terminal = NULL; | |
2988 | const char * sname; | |
2989 | char typetag; | |
2990 | int sname_len; | |
2991 | ||
9c2799c2 | 2992 | gas_assert (sym != NULL); |
280d71bf DB |
2993 | |
2994 | /* Recurse to symbol_relc_make_expr if this symbol | |
2995 | is defined as an expression or a plain value. */ | |
2996 | if ( S_GET_SEGMENT (sym) == expr_section | |
2997 | || S_GET_SEGMENT (sym) == absolute_section) | |
2998 | return symbol_relc_make_expr (& sym->sy_value); | |
2999 | ||
3000 | /* This may be a "fake symbol" L0\001, referring to ".". | |
3001 | Write out a special null symbol to refer to this position. */ | |
3002 | if (! strcmp (S_GET_NAME (sym), FAKE_LABEL_NAME)) | |
3003 | return xstrdup ("."); | |
3004 | ||
3005 | /* We hope this is a plain leaf symbol. Construct the encoding | |
3006 | as {S,s}II...:CCCCCCC.... | |
3007 | where 'S'/'s' means section symbol / plain symbol | |
3008 | III is decimal for the symbol name length | |
3009 | CCC is the symbol name itself. */ | |
3010 | symbol_mark_used_in_reloc (sym); | |
3011 | ||
3012 | sname = S_GET_NAME (sym); | |
3013 | sname_len = strlen (sname); | |
3014 | typetag = symbol_section_p (sym) ? 'S' : 's'; | |
3015 | ||
3016 | terminal = xmalloc (1 /* S or s */ | |
3017 | + 8 /* sname_len in decimal */ | |
3018 | + 1 /* _ spacer */ | |
3019 | + sname_len /* name itself */ | |
3020 | + 1 /* \0 */ ); | |
3021 | ||
3022 | sprintf (terminal, "%c%d:%s", typetag, sname_len, sname); | |
3023 | return terminal; | |
3024 | } | |
3025 | ||
3026 | /* Convert given value to a new complex-relocation symbol name. This | |
3027 | is a non-recursive function, since it is be called for leaf nodes | |
3028 | (plain values) in the expression tree. The caller owns the | |
3029 | returning string, so should free() it eventually. No errors. */ | |
3030 | ||
3031 | char * | |
3032 | symbol_relc_make_value (offsetT val) | |
3033 | { | |
3034 | char * terminal = xmalloc (28); /* Enough for long long. */ | |
3035 | ||
3036 | terminal[0] = '#'; | |
1a412f5f | 3037 | bfd_sprintf_vma (stdoutput, terminal + 1, val); |
280d71bf DB |
3038 | return terminal; |
3039 | } | |
3040 | ||
3041 | /* Convert given expression to a new complex-relocation symbol name. | |
3042 | This is a recursive function, since it traverses the entire given | |
3043 | expression tree. The caller owns the returning string, so should | |
3044 | free() it eventually. Errors are indicated via as_bad() and a NULL | |
3045 | return value. */ | |
3046 | ||
3047 | char * | |
3048 | symbol_relc_make_expr (expressionS * exp) | |
3049 | { | |
3050 | char * opstr = NULL; /* Operator prefix string. */ | |
3051 | int arity = 0; /* Arity of this operator. */ | |
3052 | char * operands[3]; /* Up to three operands. */ | |
3053 | char * concat_string = NULL; | |
3054 | ||
3055 | operands[0] = operands[1] = operands[2] = NULL; | |
3056 | ||
9c2799c2 | 3057 | gas_assert (exp != NULL); |
280d71bf DB |
3058 | |
3059 | /* Match known operators -> fill in opstr, arity, operands[] and fall | |
3060 | through to construct subexpression fragments; may instead return | |
3061 | string directly for leaf nodes. */ | |
3062 | ||
3063 | /* See expr.h for the meaning of all these enums. Many operators | |
3064 | have an unnatural arity (X_add_number implicitly added). The | |
3065 | conversion logic expands them to explicit "+" subexpressions. */ | |
3066 | ||
3067 | switch (exp->X_op) | |
3068 | { | |
3069 | default: | |
3070 | as_bad ("Unknown expression operator (enum %d)", exp->X_op); | |
3071 | break; | |
3072 | ||
3073 | /* Leaf nodes. */ | |
3074 | case O_constant: | |
3075 | return symbol_relc_make_value (exp->X_add_number); | |
3076 | ||
3077 | case O_symbol: | |
3078 | if (exp->X_add_number) | |
3079 | { | |
3080 | arity = 2; | |
3081 | opstr = "+"; | |
3082 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); | |
3083 | operands[1] = symbol_relc_make_value (exp->X_add_number); | |
3084 | break; | |
3085 | } | |
3086 | else | |
3087 | return symbol_relc_make_sym (exp->X_add_symbol); | |
3088 | ||
3089 | /* Helper macros for nesting nodes. */ | |
3090 | ||
3091 | #define HANDLE_XADD_OPT1(str_) \ | |
3092 | if (exp->X_add_number) \ | |
3093 | { \ | |
3094 | arity = 2; \ | |
3095 | opstr = "+:" str_; \ | |
3096 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3097 | operands[1] = symbol_relc_make_value (exp->X_add_number); \ | |
3098 | break; \ | |
3099 | } \ | |
3100 | else \ | |
3101 | { \ | |
3102 | arity = 1; \ | |
3103 | opstr = str_; \ | |
3104 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3105 | } \ | |
3106 | break | |
3107 | ||
3108 | #define HANDLE_XADD_OPT2(str_) \ | |
3109 | if (exp->X_add_number) \ | |
3110 | { \ | |
3111 | arity = 3; \ | |
3112 | opstr = "+:" str_; \ | |
3113 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3114 | operands[1] = symbol_relc_make_sym (exp->X_op_symbol); \ | |
3115 | operands[2] = symbol_relc_make_value (exp->X_add_number); \ | |
3116 | } \ | |
3117 | else \ | |
3118 | { \ | |
3119 | arity = 2; \ | |
3120 | opstr = str_; \ | |
3121 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3122 | operands[1] = symbol_relc_make_sym (exp->X_op_symbol); \ | |
3123 | } \ | |
3124 | break | |
3125 | ||
3126 | /* Nesting nodes. */ | |
3127 | ||
3128 | case O_uminus: HANDLE_XADD_OPT1 ("0-"); | |
3129 | case O_bit_not: HANDLE_XADD_OPT1 ("~"); | |
3130 | case O_logical_not: HANDLE_XADD_OPT1 ("!"); | |
3131 | case O_multiply: HANDLE_XADD_OPT2 ("*"); | |
3132 | case O_divide: HANDLE_XADD_OPT2 ("/"); | |
3133 | case O_modulus: HANDLE_XADD_OPT2 ("%"); | |
3134 | case O_left_shift: HANDLE_XADD_OPT2 ("<<"); | |
3135 | case O_right_shift: HANDLE_XADD_OPT2 (">>"); | |
3136 | case O_bit_inclusive_or: HANDLE_XADD_OPT2 ("|"); | |
3137 | case O_bit_exclusive_or: HANDLE_XADD_OPT2 ("^"); | |
3138 | case O_bit_and: HANDLE_XADD_OPT2 ("&"); | |
3139 | case O_add: HANDLE_XADD_OPT2 ("+"); | |
3140 | case O_subtract: HANDLE_XADD_OPT2 ("-"); | |
3141 | case O_eq: HANDLE_XADD_OPT2 ("=="); | |
3142 | case O_ne: HANDLE_XADD_OPT2 ("!="); | |
3143 | case O_lt: HANDLE_XADD_OPT2 ("<"); | |
3144 | case O_le: HANDLE_XADD_OPT2 ("<="); | |
3145 | case O_ge: HANDLE_XADD_OPT2 (">="); | |
3146 | case O_gt: HANDLE_XADD_OPT2 (">"); | |
3147 | case O_logical_and: HANDLE_XADD_OPT2 ("&&"); | |
3148 | case O_logical_or: HANDLE_XADD_OPT2 ("||"); | |
3149 | } | |
3150 | ||
3151 | /* Validate & reject early. */ | |
3152 | if (arity >= 1 && ((operands[0] == NULL) || (strlen (operands[0]) == 0))) | |
3153 | opstr = NULL; | |
3154 | if (arity >= 2 && ((operands[1] == NULL) || (strlen (operands[1]) == 0))) | |
3155 | opstr = NULL; | |
3156 | if (arity >= 3 && ((operands[2] == NULL) || (strlen (operands[2]) == 0))) | |
3157 | opstr = NULL; | |
3158 | ||
3159 | if (opstr == NULL) | |
3160 | concat_string = NULL; | |
3161 | else | |
3162 | { | |
3163 | /* Allocate new string; include inter-operand padding gaps etc. */ | |
3164 | concat_string = xmalloc (strlen (opstr) | |
3165 | + 1 | |
3166 | + (arity >= 1 ? (strlen (operands[0]) + 1 ) : 0) | |
3167 | + (arity >= 2 ? (strlen (operands[1]) + 1 ) : 0) | |
3168 | + (arity >= 3 ? (strlen (operands[2]) + 0 ) : 0) | |
3169 | + 1); | |
9c2799c2 | 3170 | gas_assert (concat_string != NULL); |
280d71bf DB |
3171 | |
3172 | /* Format the thing. */ | |
3173 | sprintf (concat_string, | |
3174 | (arity == 0 ? "%s" : | |
3175 | arity == 1 ? "%s:%s" : | |
3176 | arity == 2 ? "%s:%s:%s" : | |
3177 | /* arity == 3 */ "%s:%s:%s:%s"), | |
3178 | opstr, operands[0], operands[1], operands[2]); | |
3179 | } | |
3180 | ||
3181 | /* Free operand strings (not opstr). */ | |
3182 | if (arity >= 1) xfree (operands[0]); | |
3183 | if (arity >= 2) xfree (operands[1]); | |
3184 | if (arity >= 3) xfree (operands[2]); | |
3185 | ||
3186 | return concat_string; | |
3187 | } | |
3188 | ||
3189 | #endif |