Commit | Line | Data |
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252b5132 | 1 | /* symbols.c -symbol table- |
f7e42eb4 | 2 | Copyright 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
5a0ade8b AM |
3 | 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, |
4 | 2011 Free Software Foundation, Inc. | |
252b5132 RH |
5 | |
6 | This file is part of GAS, the GNU Assembler. | |
7 | ||
8 | GAS is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
ec2655a6 | 10 | the Free Software Foundation; either version 3, or (at your option) |
252b5132 RH |
11 | any later version. |
12 | ||
13 | GAS is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GAS; see the file COPYING. If not, write to the Free | |
4b4da160 NC |
20 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
21 | 02110-1301, USA. */ | |
252b5132 | 22 | |
7c743825 | 23 | /* #define DEBUG_SYMS / * to debug symbol list maintenance. */ |
252b5132 | 24 | |
252b5132 RH |
25 | #include "as.h" |
26 | ||
3882b010 | 27 | #include "safe-ctype.h" |
252b5132 RH |
28 | #include "obstack.h" /* For "symbols.h" */ |
29 | #include "subsegs.h" | |
30 | ||
49309057 ILT |
31 | #include "struc-symbol.h" |
32 | ||
252b5132 RH |
33 | /* This is non-zero if symbols are case sensitive, which is the |
34 | default. */ | |
35 | int symbols_case_sensitive = 1; | |
36 | ||
37 | #ifndef WORKING_DOT_WORD | |
38 | extern int new_broken_words; | |
39 | #endif | |
40 | ||
41 | /* symbol-name => struct symbol pointer */ | |
42 | static struct hash_control *sy_hash; | |
43 | ||
49309057 ILT |
44 | /* Table of local symbols. */ |
45 | static struct hash_control *local_hash; | |
46 | ||
7c743825 | 47 | /* Below are commented in "symbols.h". */ |
252b5132 RH |
48 | symbolS *symbol_rootP; |
49 | symbolS *symbol_lastP; | |
50 | symbolS abs_symbol; | |
4a826962 | 51 | symbolS dot_symbol; |
252b5132 RH |
52 | |
53 | #ifdef DEBUG_SYMS | |
54 | #define debug_verify_symchain verify_symbol_chain | |
55 | #else | |
56 | #define debug_verify_symchain(root, last) ((void) 0) | |
57 | #endif | |
58 | ||
aa257fcd NC |
59 | #define DOLLAR_LABEL_CHAR '\001' |
60 | #define LOCAL_LABEL_CHAR '\002' | |
61 | ||
df58fc94 RS |
62 | #ifndef TC_LABEL_IS_LOCAL |
63 | #define TC_LABEL_IS_LOCAL(name) 0 | |
64 | #endif | |
65 | ||
252b5132 | 66 | struct obstack notes; |
22ba0981 | 67 | #ifdef TE_PE |
977cdf5a NC |
68 | /* The name of an external symbol which is |
69 | used to make weak PE symbol names unique. */ | |
70 | const char * an_external_name; | |
71 | #endif | |
252b5132 | 72 | |
74937d39 KH |
73 | static char *save_symbol_name (const char *); |
74 | static void fb_label_init (void); | |
75 | static long dollar_label_instance (long); | |
76 | static long fb_label_instance (long); | |
252b5132 | 77 | |
74937d39 | 78 | static void print_binary (FILE *, const char *, expressionS *); |
252b5132 | 79 | |
7c743825 | 80 | /* Return a pointer to a new symbol. Die if we can't make a new |
252b5132 RH |
81 | symbol. Fill in the symbol's values. Add symbol to end of symbol |
82 | chain. | |
7c743825 | 83 | |
252b5132 RH |
84 | This function should be called in the general case of creating a |
85 | symbol. However, if the output file symbol table has already been | |
86 | set, and you are certain that this symbol won't be wanted in the | |
87 | output file, you can call symbol_create. */ | |
88 | ||
89 | symbolS * | |
74937d39 | 90 | symbol_new (const char *name, segT segment, valueT valu, fragS *frag) |
252b5132 RH |
91 | { |
92 | symbolS *symbolP = symbol_create (name, segment, valu, frag); | |
93 | ||
7c743825 | 94 | /* Link to end of symbol chain. */ |
252b5132 RH |
95 | { |
96 | extern int symbol_table_frozen; | |
97 | if (symbol_table_frozen) | |
98 | abort (); | |
99 | } | |
252b5132 RH |
100 | symbol_append (symbolP, symbol_lastP, &symbol_rootP, &symbol_lastP); |
101 | ||
102 | return symbolP; | |
103 | } | |
104 | ||
49309057 ILT |
105 | /* Save a symbol name on a permanent obstack, and convert it according |
106 | to the object file format. */ | |
107 | ||
108 | static char * | |
74937d39 | 109 | save_symbol_name (const char *name) |
252b5132 RH |
110 | { |
111 | unsigned int name_length; | |
49309057 | 112 | char *ret; |
252b5132 | 113 | |
7c743825 | 114 | name_length = strlen (name) + 1; /* +1 for \0. */ |
252b5132 | 115 | obstack_grow (¬es, name, name_length); |
1e9cc1c2 | 116 | ret = (char *) obstack_finish (¬es); |
49309057 | 117 | |
252b5132 | 118 | #ifdef tc_canonicalize_symbol_name |
49309057 | 119 | ret = tc_canonicalize_symbol_name (ret); |
252b5132 RH |
120 | #endif |
121 | ||
122 | if (! symbols_case_sensitive) | |
123 | { | |
3882b010 | 124 | char *s; |
252b5132 | 125 | |
3882b010 L |
126 | for (s = ret; *s != '\0'; s++) |
127 | *s = TOUPPER (*s); | |
252b5132 RH |
128 | } |
129 | ||
49309057 ILT |
130 | return ret; |
131 | } | |
132 | ||
133 | symbolS * | |
74937d39 KH |
134 | symbol_create (const char *name, /* It is copied, the caller can destroy/modify. */ |
135 | segT segment, /* Segment identifier (SEG_<something>). */ | |
136 | valueT valu, /* Symbol value. */ | |
137 | fragS *frag /* Associated fragment. */) | |
49309057 ILT |
138 | { |
139 | char *preserved_copy_of_name; | |
140 | symbolS *symbolP; | |
141 | ||
142 | preserved_copy_of_name = save_symbol_name (name); | |
143 | ||
1e9cc1c2 | 144 | symbolP = (symbolS *) obstack_alloc (¬es, sizeof (symbolS)); |
252b5132 | 145 | |
7c743825 | 146 | /* symbol must be born in some fixed state. This seems as good as any. */ |
252b5132 RH |
147 | memset (symbolP, 0, sizeof (symbolS)); |
148 | ||
252b5132 RH |
149 | symbolP->bsym = bfd_make_empty_symbol (stdoutput); |
150 | if (symbolP->bsym == NULL) | |
885afe7b | 151 | as_fatal ("bfd_make_empty_symbol: %s", bfd_errmsg (bfd_get_error ())); |
252b5132 RH |
152 | S_SET_NAME (symbolP, preserved_copy_of_name); |
153 | ||
154 | S_SET_SEGMENT (symbolP, segment); | |
155 | S_SET_VALUE (symbolP, valu); | |
156 | symbol_clear_list_pointers (symbolP); | |
157 | ||
158 | symbolP->sy_frag = frag; | |
252b5132 RH |
159 | |
160 | obj_symbol_new_hook (symbolP); | |
161 | ||
162 | #ifdef tc_symbol_new_hook | |
163 | tc_symbol_new_hook (symbolP); | |
164 | #endif | |
165 | ||
166 | return symbolP; | |
167 | } | |
168 | \f | |
49309057 ILT |
169 | |
170 | /* Local symbol support. If we can get away with it, we keep only a | |
171 | small amount of information for local symbols. */ | |
172 | ||
74937d39 | 173 | static symbolS *local_symbol_convert (struct local_symbol *); |
49309057 ILT |
174 | |
175 | /* Used for statistics. */ | |
176 | ||
177 | static unsigned long local_symbol_count; | |
178 | static unsigned long local_symbol_conversion_count; | |
179 | ||
180 | /* This macro is called with a symbol argument passed by reference. | |
181 | It returns whether this is a local symbol. If necessary, it | |
182 | changes its argument to the real symbol. */ | |
183 | ||
184 | #define LOCAL_SYMBOL_CHECK(s) \ | |
185 | (s->bsym == NULL \ | |
186 | ? (local_symbol_converted_p ((struct local_symbol *) s) \ | |
187 | ? (s = local_symbol_get_real_symbol ((struct local_symbol *) s), \ | |
188 | 0) \ | |
189 | : 1) \ | |
190 | : 0) | |
191 | ||
192 | /* Create a local symbol and insert it into the local hash table. */ | |
193 | ||
87c245cc | 194 | static struct local_symbol * |
91d6fa6a | 195 | local_symbol_make (const char *name, segT section, valueT val, fragS *frag) |
49309057 ILT |
196 | { |
197 | char *name_copy; | |
198 | struct local_symbol *ret; | |
199 | ||
200 | ++local_symbol_count; | |
201 | ||
202 | name_copy = save_symbol_name (name); | |
203 | ||
1e9cc1c2 | 204 | ret = (struct local_symbol *) obstack_alloc (¬es, sizeof *ret); |
49309057 ILT |
205 | ret->lsy_marker = NULL; |
206 | ret->lsy_name = name_copy; | |
207 | ret->lsy_section = section; | |
208 | local_symbol_set_frag (ret, frag); | |
91d6fa6a | 209 | ret->lsy_value = val; |
49309057 | 210 | |
5a49b8ac | 211 | hash_jam (local_hash, name_copy, (void *) ret); |
49309057 ILT |
212 | |
213 | return ret; | |
214 | } | |
215 | ||
216 | /* Convert a local symbol into a real symbol. Note that we do not | |
217 | reclaim the space used by the local symbol. */ | |
218 | ||
219 | static symbolS * | |
74937d39 | 220 | local_symbol_convert (struct local_symbol *locsym) |
49309057 ILT |
221 | { |
222 | symbolS *ret; | |
223 | ||
9c2799c2 | 224 | gas_assert (locsym->lsy_marker == NULL); |
49309057 ILT |
225 | if (local_symbol_converted_p (locsym)) |
226 | return local_symbol_get_real_symbol (locsym); | |
227 | ||
228 | ++local_symbol_conversion_count; | |
229 | ||
bd780143 | 230 | ret = symbol_new (locsym->lsy_name, locsym->lsy_section, locsym->lsy_value, |
49309057 ILT |
231 | local_symbol_get_frag (locsym)); |
232 | ||
233 | if (local_symbol_resolved_p (locsym)) | |
234 | ret->sy_resolved = 1; | |
235 | ||
236 | /* Local symbols are always either defined or used. */ | |
237 | ret->sy_used = 1; | |
238 | ||
8c5e1ccd AO |
239 | #ifdef TC_LOCAL_SYMFIELD_CONVERT |
240 | TC_LOCAL_SYMFIELD_CONVERT (locsym, ret); | |
241 | #endif | |
242 | ||
49309057 ILT |
243 | symbol_table_insert (ret); |
244 | ||
245 | local_symbol_mark_converted (locsym); | |
246 | local_symbol_set_real_symbol (locsym, ret); | |
247 | ||
248 | hash_jam (local_hash, locsym->lsy_name, NULL); | |
249 | ||
250 | return ret; | |
251 | } | |
49309057 | 252 | \f |
a3371076 AM |
253 | static void |
254 | define_sym_at_dot (symbolS *symbolP) | |
255 | { | |
256 | symbolP->sy_frag = frag_now; | |
a3371076 AM |
257 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); |
258 | S_SET_SEGMENT (symbolP, now_seg); | |
259 | } | |
260 | ||
7c743825 KH |
261 | /* We have just seen "<name>:". |
262 | Creates a struct symbol unless it already exists. | |
263 | ||
264 | Gripes if we are redefining a symbol incompatibly (and ignores it). */ | |
252b5132 | 265 | |
252b5132 | 266 | symbolS * |
74937d39 KH |
267 | colon (/* Just seen "x:" - rattle symbols & frags. */ |
268 | const char *sym_name /* Symbol name, as a cannonical string. */ | |
269 | /* We copy this string: OK to alter later. */) | |
252b5132 | 270 | { |
7c743825 | 271 | register symbolS *symbolP; /* Symbol we are working with. */ |
252b5132 | 272 | |
7cf10893 | 273 | /* Sun local labels go out of scope whenever a non-local symbol is |
252b5132 | 274 | defined. */ |
7be1c489 AM |
275 | if (LOCAL_LABELS_DOLLAR |
276 | && !bfd_is_local_label_name (stdoutput, sym_name)) | |
277 | dollar_label_clear (); | |
252b5132 RH |
278 | |
279 | #ifndef WORKING_DOT_WORD | |
280 | if (new_broken_words) | |
281 | { | |
282 | struct broken_word *a; | |
283 | int possible_bytes; | |
284 | fragS *frag_tmp; | |
285 | char *frag_opcode; | |
286 | ||
7cf10893 NC |
287 | if (now_seg == absolute_section) |
288 | { | |
289 | as_bad (_("cannot define symbol `%s' in absolute section"), sym_name); | |
290 | return NULL; | |
291 | } | |
1d3b2b27 | 292 | |
252b5132 RH |
293 | possible_bytes = (md_short_jump_size |
294 | + new_broken_words * md_long_jump_size); | |
295 | ||
296 | frag_tmp = frag_now; | |
297 | frag_opcode = frag_var (rs_broken_word, | |
298 | possible_bytes, | |
299 | possible_bytes, | |
300 | (relax_substateT) 0, | |
301 | (symbolS *) broken_words, | |
302 | (offsetT) 0, | |
303 | NULL); | |
304 | ||
7c743825 KH |
305 | /* We want to store the pointer to where to insert the jump |
306 | table in the fr_opcode of the rs_broken_word frag. This | |
307 | requires a little hackery. */ | |
252b5132 RH |
308 | while (frag_tmp |
309 | && (frag_tmp->fr_type != rs_broken_word | |
310 | || frag_tmp->fr_opcode)) | |
311 | frag_tmp = frag_tmp->fr_next; | |
312 | know (frag_tmp); | |
313 | frag_tmp->fr_opcode = frag_opcode; | |
314 | new_broken_words = 0; | |
315 | ||
316 | for (a = broken_words; a && a->dispfrag == 0; a = a->next_broken_word) | |
317 | a->dispfrag = frag_tmp; | |
318 | } | |
319 | #endif /* WORKING_DOT_WORD */ | |
320 | ||
321 | if ((symbolP = symbol_find (sym_name)) != 0) | |
322 | { | |
06e77878 | 323 | S_CLEAR_WEAKREFR (symbolP); |
252b5132 RH |
324 | #ifdef RESOLVE_SYMBOL_REDEFINITION |
325 | if (RESOLVE_SYMBOL_REDEFINITION (symbolP)) | |
326 | return symbolP; | |
327 | #endif | |
7c743825 | 328 | /* Now check for undefined symbols. */ |
49309057 ILT |
329 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
330 | { | |
331 | struct local_symbol *locsym = (struct local_symbol *) symbolP; | |
332 | ||
333 | if (locsym->lsy_section != undefined_section | |
334 | && (local_symbol_get_frag (locsym) != frag_now | |
335 | || locsym->lsy_section != now_seg | |
bd780143 | 336 | || locsym->lsy_value != frag_now_fix ())) |
49309057 | 337 | { |
0e389e77 | 338 | as_bad (_("symbol `%s' is already defined"), sym_name); |
49309057 ILT |
339 | return symbolP; |
340 | } | |
341 | ||
342 | locsym->lsy_section = now_seg; | |
343 | local_symbol_set_frag (locsym, frag_now); | |
bd780143 | 344 | locsym->lsy_value = frag_now_fix (); |
49309057 | 345 | } |
b54788f8 | 346 | else if (!(S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
92757bc9 JB |
347 | || S_IS_COMMON (symbolP) |
348 | || S_IS_VOLATILE (symbolP)) | |
252b5132 | 349 | { |
89cdfe57 | 350 | if (S_IS_VOLATILE (symbolP)) |
92757bc9 JB |
351 | { |
352 | symbolP = symbol_clone (symbolP, 1); | |
353 | S_SET_VALUE (symbolP, 0); | |
354 | S_CLEAR_VOLATILE (symbolP); | |
355 | } | |
252b5132 RH |
356 | if (S_GET_VALUE (symbolP) == 0) |
357 | { | |
a3371076 | 358 | define_sym_at_dot (symbolP); |
252b5132 RH |
359 | #ifdef N_UNDF |
360 | know (N_UNDF == 0); | |
7c743825 | 361 | #endif /* if we have one, it better be zero. */ |
252b5132 RH |
362 | |
363 | } | |
364 | else | |
365 | { | |
7c743825 KH |
366 | /* There are still several cases to check: |
367 | ||
368 | A .comm/.lcomm symbol being redefined as initialized | |
369 | data is OK | |
370 | ||
371 | A .comm/.lcomm symbol being redefined with a larger | |
372 | size is also OK | |
373 | ||
374 | This only used to be allowed on VMS gas, but Sun cc | |
375 | on the sparc also depends on it. */ | |
252b5132 RH |
376 | |
377 | if (((!S_IS_DEBUG (symbolP) | |
378 | && (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)) | |
379 | && S_IS_EXTERNAL (symbolP)) | |
380 | || S_GET_SEGMENT (symbolP) == bss_section) | |
381 | && (now_seg == data_section | |
b3ce1bf7 | 382 | || now_seg == bss_section |
252b5132 RH |
383 | || now_seg == S_GET_SEGMENT (symbolP))) |
384 | { | |
7c743825 | 385 | /* Select which of the 2 cases this is. */ |
252b5132 RH |
386 | if (now_seg != data_section) |
387 | { | |
7c743825 KH |
388 | /* New .comm for prev .comm symbol. |
389 | ||
390 | If the new size is larger we just change its | |
391 | value. If the new size is smaller, we ignore | |
392 | this symbol. */ | |
252b5132 RH |
393 | if (S_GET_VALUE (symbolP) |
394 | < ((unsigned) frag_now_fix ())) | |
395 | { | |
396 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
397 | } | |
398 | } | |
399 | else | |
400 | { | |
401 | /* It is a .comm/.lcomm being converted to initialized | |
402 | data. */ | |
a3371076 | 403 | define_sym_at_dot (symbolP); |
252b5132 RH |
404 | } |
405 | } | |
406 | else | |
407 | { | |
4c63da97 AM |
408 | #if (!defined (OBJ_AOUT) && !defined (OBJ_MAYBE_AOUT) \ |
409 | && !defined (OBJ_BOUT) && !defined (OBJ_MAYBE_BOUT)) | |
410 | static const char *od_buf = ""; | |
252b5132 | 411 | #else |
4c63da97 AM |
412 | char od_buf[100]; |
413 | od_buf[0] = '\0'; | |
4c63da97 | 414 | if (OUTPUT_FLAVOR == bfd_target_aout_flavour) |
d1a6c242 KH |
415 | sprintf (od_buf, "%d.%d.", |
416 | S_GET_OTHER (symbolP), | |
417 | S_GET_DESC (symbolP)); | |
4c63da97 | 418 | #endif |
0e389e77 | 419 | as_bad (_("symbol `%s' is already defined as \"%s\"/%s%ld"), |
252b5132 RH |
420 | sym_name, |
421 | segment_name (S_GET_SEGMENT (symbolP)), | |
4c63da97 | 422 | od_buf, |
252b5132 | 423 | (long) S_GET_VALUE (symbolP)); |
252b5132 | 424 | } |
7c743825 | 425 | } /* if the undefined symbol has no value */ |
252b5132 RH |
426 | } |
427 | else | |
428 | { | |
7c743825 | 429 | /* Don't blow up if the definition is the same. */ |
252b5132 RH |
430 | if (!(frag_now == symbolP->sy_frag |
431 | && S_GET_VALUE (symbolP) == frag_now_fix () | |
432 | && S_GET_SEGMENT (symbolP) == now_seg)) | |
92757bc9 JB |
433 | { |
434 | as_bad (_("symbol `%s' is already defined"), sym_name); | |
435 | symbolP = symbol_clone (symbolP, 0); | |
a3371076 | 436 | define_sym_at_dot (symbolP); |
92757bc9 | 437 | } |
d4887adc | 438 | } |
252b5132 RH |
439 | |
440 | } | |
49309057 ILT |
441 | else if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, sym_name)) |
442 | { | |
443 | symbolP = (symbolS *) local_symbol_make (sym_name, now_seg, | |
444 | (valueT) frag_now_fix (), | |
445 | frag_now); | |
446 | } | |
252b5132 RH |
447 | else |
448 | { | |
449 | symbolP = symbol_new (sym_name, now_seg, (valueT) frag_now_fix (), | |
450 | frag_now); | |
252b5132 RH |
451 | |
452 | symbol_table_insert (symbolP); | |
d4887adc | 453 | } |
252b5132 RH |
454 | |
455 | if (mri_common_symbol != NULL) | |
456 | { | |
457 | /* This symbol is actually being defined within an MRI common | |
1d3b2b27 | 458 | section. This requires special handling. */ |
49309057 ILT |
459 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
460 | symbolP = local_symbol_convert ((struct local_symbol *) symbolP); | |
252b5132 RH |
461 | symbolP->sy_value.X_op = O_symbol; |
462 | symbolP->sy_value.X_add_symbol = mri_common_symbol; | |
463 | symbolP->sy_value.X_add_number = S_GET_VALUE (mri_common_symbol); | |
464 | symbolP->sy_frag = &zero_address_frag; | |
465 | S_SET_SEGMENT (symbolP, expr_section); | |
466 | symbolP->sy_mri_common = 1; | |
467 | } | |
468 | ||
469 | #ifdef tc_frob_label | |
470 | tc_frob_label (symbolP); | |
471 | #endif | |
472 | #ifdef obj_frob_label | |
473 | obj_frob_label (symbolP); | |
474 | #endif | |
475 | ||
476 | return symbolP; | |
477 | } | |
478 | \f | |
7c743825 | 479 | /* Die if we can't insert the symbol. */ |
252b5132 | 480 | |
7c743825 | 481 | void |
74937d39 | 482 | symbol_table_insert (symbolS *symbolP) |
252b5132 RH |
483 | { |
484 | register const char *error_string; | |
485 | ||
486 | know (symbolP); | |
487 | know (S_GET_NAME (symbolP)); | |
488 | ||
49309057 ILT |
489 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
490 | { | |
491 | error_string = hash_jam (local_hash, S_GET_NAME (symbolP), | |
5a49b8ac | 492 | (void *) symbolP); |
49309057 | 493 | if (error_string != NULL) |
0e389e77 | 494 | as_fatal (_("inserting \"%s\" into symbol table failed: %s"), |
49309057 ILT |
495 | S_GET_NAME (symbolP), error_string); |
496 | return; | |
497 | } | |
498 | ||
5a49b8ac | 499 | if ((error_string = hash_jam (sy_hash, S_GET_NAME (symbolP), (void *) symbolP))) |
252b5132 | 500 | { |
0e389e77 | 501 | as_fatal (_("inserting \"%s\" into symbol table failed: %s"), |
252b5132 | 502 | S_GET_NAME (symbolP), error_string); |
7c743825 KH |
503 | } /* on error */ |
504 | } | |
252b5132 | 505 | \f |
7c743825 KH |
506 | /* If a symbol name does not exist, create it as undefined, and insert |
507 | it into the symbol table. Return a pointer to it. */ | |
508 | ||
252b5132 | 509 | symbolS * |
74937d39 | 510 | symbol_find_or_make (const char *name) |
252b5132 RH |
511 | { |
512 | register symbolS *symbolP; | |
513 | ||
514 | symbolP = symbol_find (name); | |
515 | ||
516 | if (symbolP == NULL) | |
517 | { | |
49309057 ILT |
518 | if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, name)) |
519 | { | |
520 | symbolP = md_undefined_symbol ((char *) name); | |
521 | if (symbolP != NULL) | |
522 | return symbolP; | |
523 | ||
524 | symbolP = (symbolS *) local_symbol_make (name, undefined_section, | |
525 | (valueT) 0, | |
526 | &zero_address_frag); | |
527 | return symbolP; | |
528 | } | |
49309057 | 529 | |
252b5132 RH |
530 | symbolP = symbol_make (name); |
531 | ||
532 | symbol_table_insert (symbolP); | |
533 | } /* if symbol wasn't found */ | |
534 | ||
535 | return (symbolP); | |
7c743825 | 536 | } |
252b5132 RH |
537 | |
538 | symbolS * | |
74937d39 | 539 | symbol_make (const char *name) |
252b5132 RH |
540 | { |
541 | symbolS *symbolP; | |
542 | ||
7c743825 | 543 | /* Let the machine description default it, e.g. for register names. */ |
252b5132 RH |
544 | symbolP = md_undefined_symbol ((char *) name); |
545 | ||
546 | if (!symbolP) | |
547 | symbolP = symbol_new (name, undefined_section, (valueT) 0, &zero_address_frag); | |
548 | ||
549 | return (symbolP); | |
7c743825 | 550 | } |
252b5132 | 551 | |
9497f5ac NC |
552 | symbolS * |
553 | symbol_clone (symbolS *orgsymP, int replace) | |
554 | { | |
555 | symbolS *newsymP; | |
6a2b6326 | 556 | asymbol *bsymorg, *bsymnew; |
9497f5ac | 557 | |
4a826962 MR |
558 | /* Make sure we never clone the dot special symbol. */ |
559 | gas_assert (orgsymP != &dot_symbol); | |
560 | ||
9497f5ac NC |
561 | /* Running local_symbol_convert on a clone that's not the one currently |
562 | in local_hash would incorrectly replace the hash entry. Thus the | |
563 | symbol must be converted here. Note that the rest of the function | |
564 | depends on not encountering an unconverted symbol. */ | |
565 | if (LOCAL_SYMBOL_CHECK (orgsymP)) | |
566 | orgsymP = local_symbol_convert ((struct local_symbol *) orgsymP); | |
6a2b6326 | 567 | bsymorg = orgsymP->bsym; |
9497f5ac | 568 | |
1e9cc1c2 | 569 | newsymP = (symbolS *) obstack_alloc (¬es, sizeof (*newsymP)); |
9497f5ac | 570 | *newsymP = *orgsymP; |
6a2b6326 JB |
571 | bsymnew = bfd_make_empty_symbol (bfd_asymbol_bfd (bsymorg)); |
572 | if (bsymnew == NULL) | |
885afe7b | 573 | as_fatal ("bfd_make_empty_symbol: %s", bfd_errmsg (bfd_get_error ())); |
6a2b6326 JB |
574 | newsymP->bsym = bsymnew; |
575 | bsymnew->name = bsymorg->name; | |
25313d6a | 576 | bsymnew->flags = bsymorg->flags & ~BSF_SECTION_SYM; |
9d75b288 | 577 | bsymnew->section = bsymorg->section; |
6a2b6326 JB |
578 | bfd_copy_private_symbol_data (bfd_asymbol_bfd (bsymorg), bsymorg, |
579 | bfd_asymbol_bfd (bsymnew), bsymnew); | |
580 | ||
581 | #ifdef obj_symbol_clone_hook | |
582 | obj_symbol_clone_hook (newsymP, orgsymP); | |
583 | #endif | |
584 | ||
585 | #ifdef tc_symbol_clone_hook | |
586 | tc_symbol_clone_hook (newsymP, orgsymP); | |
587 | #endif | |
9497f5ac NC |
588 | |
589 | if (replace) | |
590 | { | |
591 | if (symbol_rootP == orgsymP) | |
592 | symbol_rootP = newsymP; | |
593 | else if (orgsymP->sy_previous) | |
594 | { | |
595 | orgsymP->sy_previous->sy_next = newsymP; | |
596 | orgsymP->sy_previous = NULL; | |
597 | } | |
598 | if (symbol_lastP == orgsymP) | |
599 | symbol_lastP = newsymP; | |
600 | else if (orgsymP->sy_next) | |
601 | orgsymP->sy_next->sy_previous = newsymP; | |
73e24c68 AM |
602 | |
603 | /* Symbols that won't be output can't be external. */ | |
604 | S_CLEAR_EXTERNAL (orgsymP); | |
bdf128d6 | 605 | orgsymP->sy_previous = orgsymP->sy_next = orgsymP; |
9497f5ac NC |
606 | debug_verify_symchain (symbol_rootP, symbol_lastP); |
607 | ||
608 | symbol_table_insert (newsymP); | |
609 | } | |
bdf128d6 | 610 | else |
73e24c68 AM |
611 | { |
612 | /* Symbols that won't be output can't be external. */ | |
613 | S_CLEAR_EXTERNAL (newsymP); | |
614 | newsymP->sy_previous = newsymP->sy_next = newsymP; | |
615 | } | |
9497f5ac NC |
616 | |
617 | return newsymP; | |
618 | } | |
619 | ||
620 | /* Referenced symbols, if they are forward references, need to be cloned | |
621 | (without replacing the original) so that the value of the referenced | |
622 | symbols at the point of use . */ | |
623 | ||
624 | #undef symbol_clone_if_forward_ref | |
625 | symbolS * | |
626 | symbol_clone_if_forward_ref (symbolS *symbolP, int is_forward) | |
627 | { | |
628 | if (symbolP && !LOCAL_SYMBOL_CHECK (symbolP)) | |
629 | { | |
630 | symbolS *add_symbol = symbolP->sy_value.X_add_symbol; | |
631 | symbolS *op_symbol = symbolP->sy_value.X_op_symbol; | |
632 | ||
633 | if (symbolP->sy_forward_ref) | |
634 | is_forward = 1; | |
635 | ||
636 | if (is_forward) | |
637 | { | |
638 | /* assign_symbol() clones volatile symbols; pre-existing expressions | |
639 | hold references to the original instance, but want the current | |
640 | value. Just repeat the lookup. */ | |
641 | if (add_symbol && S_IS_VOLATILE (add_symbol)) | |
642 | add_symbol = symbol_find_exact (S_GET_NAME (add_symbol)); | |
643 | if (op_symbol && S_IS_VOLATILE (op_symbol)) | |
644 | op_symbol = symbol_find_exact (S_GET_NAME (op_symbol)); | |
645 | } | |
646 | ||
647 | /* Re-using sy_resolving here, as this routine cannot get called from | |
648 | symbol resolution code. */ | |
3df4e177 MR |
649 | if ((symbolP->bsym->section == expr_section || symbolP->sy_forward_ref) |
650 | && !symbolP->sy_resolving) | |
9497f5ac NC |
651 | { |
652 | symbolP->sy_resolving = 1; | |
653 | add_symbol = symbol_clone_if_forward_ref (add_symbol, is_forward); | |
654 | op_symbol = symbol_clone_if_forward_ref (op_symbol, is_forward); | |
655 | symbolP->sy_resolving = 0; | |
656 | } | |
657 | ||
658 | if (symbolP->sy_forward_ref | |
659 | || add_symbol != symbolP->sy_value.X_add_symbol | |
660 | || op_symbol != symbolP->sy_value.X_op_symbol) | |
3df4e177 | 661 | { |
4a826962 MR |
662 | if (symbolP != &dot_symbol) |
663 | { | |
664 | symbolP = symbol_clone (symbolP, 0); | |
665 | symbolP->sy_resolving = 0; | |
666 | } | |
667 | else | |
a1facbec MR |
668 | { |
669 | symbolP = symbol_temp_new_now (); | |
670 | #ifdef tc_new_dot_label | |
671 | tc_new_dot_label (symbolP); | |
672 | #endif | |
673 | } | |
3df4e177 | 674 | } |
9497f5ac NC |
675 | |
676 | symbolP->sy_value.X_add_symbol = add_symbol; | |
677 | symbolP->sy_value.X_op_symbol = op_symbol; | |
678 | } | |
679 | ||
680 | return symbolP; | |
681 | } | |
682 | ||
b7d6ed97 | 683 | symbolS * |
74937d39 | 684 | symbol_temp_new (segT seg, valueT ofs, fragS *frag) |
b7d6ed97 | 685 | { |
756d1d01 | 686 | return symbol_new (FAKE_LABEL_NAME, seg, ofs, frag); |
b7d6ed97 RH |
687 | } |
688 | ||
689 | symbolS * | |
74937d39 | 690 | symbol_temp_new_now (void) |
b7d6ed97 RH |
691 | { |
692 | return symbol_temp_new (now_seg, frag_now_fix (), frag_now); | |
693 | } | |
694 | ||
695 | symbolS * | |
74937d39 | 696 | symbol_temp_make (void) |
b7d6ed97 | 697 | { |
756d1d01 | 698 | return symbol_make (FAKE_LABEL_NAME); |
b7d6ed97 RH |
699 | } |
700 | ||
7c743825 KH |
701 | /* Implement symbol table lookup. |
702 | In: A symbol's name as a string: '\0' can't be part of a symbol name. | |
703 | Out: NULL if the name was not in the symbol table, else the address | |
704 | of a struct symbol associated with that name. */ | |
252b5132 | 705 | |
9758f3fc | 706 | symbolS * |
74937d39 | 707 | symbol_find_exact (const char *name) |
06e77878 AO |
708 | { |
709 | return symbol_find_exact_noref (name, 0); | |
710 | } | |
711 | ||
712 | symbolS * | |
713 | symbol_find_exact_noref (const char *name, int noref) | |
9758f3fc | 714 | { |
7be1c489 | 715 | struct local_symbol *locsym; |
06e77878 | 716 | symbolS* sym; |
9758f3fc | 717 | |
7be1c489 AM |
718 | locsym = (struct local_symbol *) hash_find (local_hash, name); |
719 | if (locsym != NULL) | |
720 | return (symbolS *) locsym; | |
9758f3fc | 721 | |
06e77878 AO |
722 | sym = ((symbolS *) hash_find (sy_hash, name)); |
723 | ||
724 | /* Any references to the symbol, except for the reference in | |
725 | .weakref, must clear this flag, such that the symbol does not | |
726 | turn into a weak symbol. Note that we don't have to handle the | |
727 | local_symbol case, since a weakrefd is always promoted out of the | |
728 | local_symbol table when it is turned into a weak symbol. */ | |
729 | if (sym && ! noref) | |
730 | S_CLEAR_WEAKREFD (sym); | |
731 | ||
732 | return sym; | |
9758f3fc AM |
733 | } |
734 | ||
252b5132 | 735 | symbolS * |
91c4c449 | 736 | symbol_find (const char *name) |
06e77878 AO |
737 | { |
738 | return symbol_find_noref (name, 0); | |
739 | } | |
740 | ||
741 | symbolS * | |
742 | symbol_find_noref (const char *name, int noref) | |
252b5132 | 743 | { |
252b5132 RH |
744 | #ifdef tc_canonicalize_symbol_name |
745 | { | |
746 | char *copy; | |
03987ced | 747 | size_t len = strlen (name) + 1; |
252b5132 | 748 | |
03987ced RH |
749 | copy = (char *) alloca (len); |
750 | memcpy (copy, name, len); | |
252b5132 RH |
751 | name = tc_canonicalize_symbol_name (copy); |
752 | } | |
753 | #endif | |
754 | ||
755 | if (! symbols_case_sensitive) | |
756 | { | |
03987ced RH |
757 | char *copy; |
758 | const char *orig; | |
759 | unsigned char c; | |
760 | ||
761 | orig = name; | |
762 | name = copy = (char *) alloca (strlen (name) + 1); | |
763 | ||
764 | while ((c = *orig++) != '\0') | |
765 | { | |
3882b010 | 766 | *copy++ = TOUPPER (c); |
03987ced RH |
767 | } |
768 | *copy = '\0'; | |
252b5132 RH |
769 | } |
770 | ||
06e77878 | 771 | return symbol_find_exact_noref (name, noref); |
252b5132 RH |
772 | } |
773 | ||
7c743825 KH |
774 | /* Once upon a time, symbols were kept in a singly linked list. At |
775 | least coff needs to be able to rearrange them from time to time, for | |
776 | which a doubly linked list is much more convenient. Loic did these | |
777 | as macros which seemed dangerous to me so they're now functions. | |
778 | xoxorich. */ | |
779 | ||
780 | /* Link symbol ADDME after symbol TARGET in the chain. */ | |
252b5132 | 781 | |
7c743825 | 782 | void |
74937d39 KH |
783 | symbol_append (symbolS *addme, symbolS *target, |
784 | symbolS **rootPP, symbolS **lastPP) | |
252b5132 | 785 | { |
49309057 ILT |
786 | if (LOCAL_SYMBOL_CHECK (addme)) |
787 | abort (); | |
788 | if (target != NULL && LOCAL_SYMBOL_CHECK (target)) | |
789 | abort (); | |
790 | ||
252b5132 RH |
791 | if (target == NULL) |
792 | { | |
793 | know (*rootPP == NULL); | |
794 | know (*lastPP == NULL); | |
795 | addme->sy_next = NULL; | |
252b5132 | 796 | addme->sy_previous = NULL; |
252b5132 RH |
797 | *rootPP = addme; |
798 | *lastPP = addme; | |
799 | return; | |
7c743825 | 800 | } /* if the list is empty */ |
252b5132 RH |
801 | |
802 | if (target->sy_next != NULL) | |
803 | { | |
252b5132 | 804 | target->sy_next->sy_previous = addme; |
252b5132 RH |
805 | } |
806 | else | |
807 | { | |
808 | know (*lastPP == target); | |
809 | *lastPP = addme; | |
7c743825 | 810 | } /* if we have a next */ |
252b5132 RH |
811 | |
812 | addme->sy_next = target->sy_next; | |
813 | target->sy_next = addme; | |
252b5132 | 814 | addme->sy_previous = target; |
252b5132 RH |
815 | |
816 | debug_verify_symchain (symbol_rootP, symbol_lastP); | |
817 | } | |
818 | ||
7c743825 KH |
819 | /* Set the chain pointers of SYMBOL to null. */ |
820 | ||
821 | void | |
74937d39 | 822 | symbol_clear_list_pointers (symbolS *symbolP) |
252b5132 | 823 | { |
49309057 ILT |
824 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
825 | abort (); | |
252b5132 | 826 | symbolP->sy_next = NULL; |
252b5132 | 827 | symbolP->sy_previous = NULL; |
252b5132 RH |
828 | } |
829 | ||
7c743825 KH |
830 | /* Remove SYMBOLP from the list. */ |
831 | ||
832 | void | |
74937d39 | 833 | symbol_remove (symbolS *symbolP, symbolS **rootPP, symbolS **lastPP) |
252b5132 | 834 | { |
49309057 ILT |
835 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
836 | abort (); | |
837 | ||
252b5132 RH |
838 | if (symbolP == *rootPP) |
839 | { | |
840 | *rootPP = symbolP->sy_next; | |
7c743825 | 841 | } /* if it was the root */ |
252b5132 RH |
842 | |
843 | if (symbolP == *lastPP) | |
844 | { | |
845 | *lastPP = symbolP->sy_previous; | |
7c743825 | 846 | } /* if it was the tail */ |
252b5132 RH |
847 | |
848 | if (symbolP->sy_next != NULL) | |
849 | { | |
850 | symbolP->sy_next->sy_previous = symbolP->sy_previous; | |
7c743825 | 851 | } /* if not last */ |
252b5132 RH |
852 | |
853 | if (symbolP->sy_previous != NULL) | |
854 | { | |
855 | symbolP->sy_previous->sy_next = symbolP->sy_next; | |
7c743825 | 856 | } /* if not first */ |
252b5132 RH |
857 | |
858 | debug_verify_symchain (*rootPP, *lastPP); | |
859 | } | |
860 | ||
7c743825 KH |
861 | /* Link symbol ADDME before symbol TARGET in the chain. */ |
862 | ||
863 | void | |
74937d39 KH |
864 | symbol_insert (symbolS *addme, symbolS *target, |
865 | symbolS **rootPP, symbolS **lastPP ATTRIBUTE_UNUSED) | |
252b5132 | 866 | { |
49309057 ILT |
867 | if (LOCAL_SYMBOL_CHECK (addme)) |
868 | abort (); | |
869 | if (LOCAL_SYMBOL_CHECK (target)) | |
870 | abort (); | |
871 | ||
252b5132 RH |
872 | if (target->sy_previous != NULL) |
873 | { | |
874 | target->sy_previous->sy_next = addme; | |
875 | } | |
876 | else | |
877 | { | |
878 | know (*rootPP == target); | |
879 | *rootPP = addme; | |
7c743825 | 880 | } /* if not first */ |
252b5132 RH |
881 | |
882 | addme->sy_previous = target->sy_previous; | |
883 | target->sy_previous = addme; | |
884 | addme->sy_next = target; | |
885 | ||
886 | debug_verify_symchain (*rootPP, *lastPP); | |
887 | } | |
888 | ||
7c743825 | 889 | void |
74937d39 | 890 | verify_symbol_chain (symbolS *rootP, symbolS *lastP) |
252b5132 RH |
891 | { |
892 | symbolS *symbolP = rootP; | |
893 | ||
894 | if (symbolP == NULL) | |
895 | return; | |
896 | ||
897 | for (; symbol_next (symbolP) != NULL; symbolP = symbol_next (symbolP)) | |
898 | { | |
9c2799c2 NC |
899 | gas_assert (symbolP->bsym != NULL); |
900 | gas_assert (symbolP->sy_next->sy_previous == symbolP); | |
252b5132 RH |
901 | } |
902 | ||
9c2799c2 | 903 | gas_assert (lastP == symbolP); |
252b5132 RH |
904 | } |
905 | ||
280d71bf DB |
906 | #ifdef OBJ_COMPLEX_RELC |
907 | ||
908 | static int | |
909 | use_complex_relocs_for (symbolS * symp) | |
910 | { | |
911 | switch (symp->sy_value.X_op) | |
912 | { | |
913 | case O_constant: | |
914 | return 0; | |
915 | ||
916 | case O_symbol: | |
917 | case O_symbol_rva: | |
918 | case O_uminus: | |
919 | case O_bit_not: | |
920 | case O_logical_not: | |
921 | if ( (S_IS_COMMON (symp->sy_value.X_add_symbol) | |
922 | || S_IS_LOCAL (symp->sy_value.X_add_symbol)) | |
923 | && | |
924 | (S_IS_DEFINED (symp->sy_value.X_add_symbol) | |
925 | && S_GET_SEGMENT (symp->sy_value.X_add_symbol) != expr_section)) | |
926 | return 0; | |
927 | break; | |
928 | ||
929 | case O_multiply: | |
930 | case O_divide: | |
931 | case O_modulus: | |
932 | case O_left_shift: | |
933 | case O_right_shift: | |
934 | case O_bit_inclusive_or: | |
935 | case O_bit_or_not: | |
936 | case O_bit_exclusive_or: | |
937 | case O_bit_and: | |
938 | case O_add: | |
939 | case O_subtract: | |
940 | case O_eq: | |
941 | case O_ne: | |
942 | case O_lt: | |
943 | case O_le: | |
944 | case O_ge: | |
945 | case O_gt: | |
946 | case O_logical_and: | |
947 | case O_logical_or: | |
948 | ||
949 | if ( (S_IS_COMMON (symp->sy_value.X_add_symbol) | |
950 | || S_IS_LOCAL (symp->sy_value.X_add_symbol)) | |
951 | && | |
952 | (S_IS_COMMON (symp->sy_value.X_op_symbol) | |
953 | || S_IS_LOCAL (symp->sy_value.X_op_symbol)) | |
954 | ||
955 | && S_IS_DEFINED (symp->sy_value.X_add_symbol) | |
956 | && S_IS_DEFINED (symp->sy_value.X_op_symbol) | |
957 | && S_GET_SEGMENT (symp->sy_value.X_add_symbol) != expr_section | |
958 | && S_GET_SEGMENT (symp->sy_value.X_op_symbol) != expr_section) | |
959 | return 0; | |
960 | break; | |
961 | ||
962 | default: | |
963 | break; | |
964 | } | |
965 | return 1; | |
966 | } | |
967 | #endif | |
968 | ||
0909233e | 969 | static void |
5a0ade8b | 970 | report_op_error (symbolS *symp, symbolS *left, operatorT op, symbolS *right) |
0909233e AM |
971 | { |
972 | char *file; | |
973 | unsigned int line; | |
5a0ade8b AM |
974 | segT seg_left = left ? S_GET_SEGMENT (left) : 0; |
975 | segT seg_right = S_GET_SEGMENT (right); | |
976 | const char *opname; | |
977 | ||
978 | switch (op) | |
979 | { | |
980 | default: | |
981 | abort (); | |
982 | return; | |
983 | ||
984 | case O_uminus: opname = "-"; break; | |
985 | case O_bit_not: opname = "~"; break; | |
986 | case O_logical_not: opname = "!"; break; | |
987 | case O_multiply: opname = "*"; break; | |
988 | case O_divide: opname = "/"; break; | |
989 | case O_modulus: opname = "%"; break; | |
990 | case O_left_shift: opname = "<<"; break; | |
991 | case O_right_shift: opname = ">>"; break; | |
992 | case O_bit_inclusive_or: opname = "|"; break; | |
993 | case O_bit_or_not: opname = "|~"; break; | |
994 | case O_bit_exclusive_or: opname = "^"; break; | |
995 | case O_bit_and: opname = "&"; break; | |
996 | case O_add: opname = "+"; break; | |
997 | case O_subtract: opname = "-"; break; | |
998 | case O_eq: opname = "=="; break; | |
999 | case O_ne: opname = "!="; break; | |
1000 | case O_lt: opname = "<"; break; | |
1001 | case O_le: opname = "<="; break; | |
1002 | case O_ge: opname = ">="; break; | |
1003 | case O_gt: opname = ">"; break; | |
1004 | case O_logical_and: opname = "&&"; break; | |
1005 | case O_logical_or: opname = "||"; break; | |
1006 | } | |
1d3b2b27 | 1007 | |
0909233e AM |
1008 | if (expr_symbol_where (symp, &file, &line)) |
1009 | { | |
5a0ade8b | 1010 | if (left) |
0909233e | 1011 | as_bad_where (file, line, |
5a0ade8b AM |
1012 | _("invalid operands (%s and %s sections) for `%s'"), |
1013 | seg_left->name, seg_right->name, opname); | |
1014 | else | |
0909233e | 1015 | as_bad_where (file, line, |
5a0ade8b AM |
1016 | _("invalid operand (%s section) for `%s'"), |
1017 | seg_right->name, opname); | |
0909233e AM |
1018 | } |
1019 | else | |
1020 | { | |
5a0ade8b AM |
1021 | const char *sname = S_GET_NAME (symp); |
1022 | ||
1023 | if (left) | |
1024 | as_bad (_("invalid operands (%s and %s sections) for `%s' when setting `%s'"), | |
1025 | seg_left->name, seg_right->name, opname, sname); | |
1026 | else | |
1027 | as_bad (_("invalid operand (%s section) for `%s' when setting `%s'"), | |
1028 | seg_right->name, opname, sname); | |
0909233e AM |
1029 | } |
1030 | } | |
1031 | ||
252b5132 RH |
1032 | /* Resolve the value of a symbol. This is called during the final |
1033 | pass over the symbol table to resolve any symbols with complex | |
1034 | values. */ | |
1035 | ||
1036 | valueT | |
74937d39 | 1037 | resolve_symbol_value (symbolS *symp) |
252b5132 RH |
1038 | { |
1039 | int resolved; | |
03e83a45 | 1040 | valueT final_val = 0; |
252b5132 RH |
1041 | segT final_seg; |
1042 | ||
49309057 ILT |
1043 | if (LOCAL_SYMBOL_CHECK (symp)) |
1044 | { | |
1045 | struct local_symbol *locsym = (struct local_symbol *) symp; | |
1046 | ||
bd780143 | 1047 | final_val = locsym->lsy_value; |
49309057 | 1048 | if (local_symbol_resolved_p (locsym)) |
bd780143 | 1049 | return final_val; |
49309057 | 1050 | |
bd780143 | 1051 | final_val += local_symbol_get_frag (locsym)->fr_address / OCTETS_PER_BYTE; |
49309057 | 1052 | |
6386f3a7 | 1053 | if (finalize_syms) |
49309057 | 1054 | { |
bd780143 | 1055 | locsym->lsy_value = final_val; |
49309057 ILT |
1056 | local_symbol_mark_resolved (locsym); |
1057 | } | |
1058 | ||
1059 | return final_val; | |
1060 | } | |
1061 | ||
252b5132 RH |
1062 | if (symp->sy_resolved) |
1063 | { | |
1064 | if (symp->sy_value.X_op == O_constant) | |
1065 | return (valueT) symp->sy_value.X_add_number; | |
1066 | else | |
1067 | return 0; | |
1068 | } | |
1069 | ||
1070 | resolved = 0; | |
1071 | final_seg = S_GET_SEGMENT (symp); | |
1072 | ||
1073 | if (symp->sy_resolving) | |
1074 | { | |
6386f3a7 | 1075 | if (finalize_syms) |
0e389e77 | 1076 | as_bad (_("symbol definition loop encountered at `%s'"), |
7c743825 | 1077 | S_GET_NAME (symp)); |
252b5132 RH |
1078 | final_val = 0; |
1079 | resolved = 1; | |
1080 | } | |
280d71bf DB |
1081 | #ifdef OBJ_COMPLEX_RELC |
1082 | else if (final_seg == expr_section | |
1083 | && use_complex_relocs_for (symp)) | |
1084 | { | |
1085 | symbolS * relc_symbol = NULL; | |
1086 | char * relc_symbol_name = NULL; | |
1087 | ||
1088 | relc_symbol_name = symbol_relc_make_expr (& symp->sy_value); | |
1089 | ||
1090 | /* For debugging, print out conversion input & output. */ | |
1091 | #ifdef DEBUG_SYMS | |
1092 | print_expr (& symp->sy_value); | |
1093 | if (relc_symbol_name) | |
1094 | fprintf (stderr, "-> relc symbol: %s\n", relc_symbol_name); | |
1095 | #endif | |
1096 | ||
1097 | if (relc_symbol_name != NULL) | |
1098 | relc_symbol = symbol_new (relc_symbol_name, undefined_section, | |
1099 | 0, & zero_address_frag); | |
1100 | ||
1101 | if (relc_symbol == NULL) | |
1102 | { | |
1103 | as_bad (_("cannot convert expression symbol %s to complex relocation"), | |
1104 | S_GET_NAME (symp)); | |
1105 | resolved = 0; | |
1106 | } | |
1107 | else | |
1108 | { | |
1109 | symbol_table_insert (relc_symbol); | |
1110 | ||
1111 | /* S_CLEAR_EXTERNAL (relc_symbol); */ | |
1112 | if (symp->bsym->flags & BSF_SRELC) | |
1113 | relc_symbol->bsym->flags |= BSF_SRELC; | |
1114 | else | |
1115 | relc_symbol->bsym->flags |= BSF_RELC; | |
1116 | /* symp->bsym->flags |= BSF_RELC; */ | |
1117 | copy_symbol_attributes (symp, relc_symbol); | |
1118 | symp->sy_value.X_op = O_symbol; | |
1119 | symp->sy_value.X_add_symbol = relc_symbol; | |
1120 | symp->sy_value.X_add_number = 0; | |
1121 | resolved = 1; | |
1122 | } | |
1123 | ||
1124 | final_seg = undefined_section; | |
1125 | goto exit_dont_set_value; | |
1126 | } | |
1127 | #endif | |
252b5132 RH |
1128 | else |
1129 | { | |
1130 | symbolS *add_symbol, *op_symbol; | |
1131 | offsetT left, right; | |
1132 | segT seg_left, seg_right; | |
1133 | operatorT op; | |
2d034539 | 1134 | int move_seg_ok; |
252b5132 RH |
1135 | |
1136 | symp->sy_resolving = 1; | |
1137 | ||
1138 | /* Help out with CSE. */ | |
1139 | add_symbol = symp->sy_value.X_add_symbol; | |
1140 | op_symbol = symp->sy_value.X_op_symbol; | |
1141 | final_val = symp->sy_value.X_add_number; | |
1142 | op = symp->sy_value.X_op; | |
1143 | ||
1144 | switch (op) | |
1145 | { | |
1146 | default: | |
1147 | BAD_CASE (op); | |
1148 | break; | |
1149 | ||
1150 | case O_absent: | |
1151 | final_val = 0; | |
1152 | /* Fall through. */ | |
1153 | ||
1154 | case O_constant: | |
bea9907b | 1155 | final_val += symp->sy_frag->fr_address / OCTETS_PER_BYTE; |
252b5132 RH |
1156 | if (final_seg == expr_section) |
1157 | final_seg = absolute_section; | |
db557034 AM |
1158 | /* Fall through. */ |
1159 | ||
1160 | case O_register: | |
252b5132 RH |
1161 | resolved = 1; |
1162 | break; | |
1163 | ||
1164 | case O_symbol: | |
1165 | case O_symbol_rva: | |
6386f3a7 | 1166 | left = resolve_symbol_value (add_symbol); |
e0890092 AM |
1167 | seg_left = S_GET_SEGMENT (add_symbol); |
1168 | if (finalize_syms) | |
1169 | symp->sy_value.X_op_symbol = NULL; | |
252b5132 | 1170 | |
e0890092 | 1171 | do_symbol: |
06e77878 AO |
1172 | if (S_IS_WEAKREFR (symp)) |
1173 | { | |
9c2799c2 | 1174 | gas_assert (final_val == 0); |
06e77878 AO |
1175 | if (S_IS_WEAKREFR (add_symbol)) |
1176 | { | |
9c2799c2 | 1177 | gas_assert (add_symbol->sy_value.X_op == O_symbol |
06e77878 AO |
1178 | && add_symbol->sy_value.X_add_number == 0); |
1179 | add_symbol = add_symbol->sy_value.X_add_symbol; | |
9c2799c2 | 1180 | gas_assert (! S_IS_WEAKREFR (add_symbol)); |
06e77878 AO |
1181 | symp->sy_value.X_add_symbol = add_symbol; |
1182 | } | |
1183 | } | |
1184 | ||
252b5132 RH |
1185 | if (symp->sy_mri_common) |
1186 | { | |
1187 | /* This is a symbol inside an MRI common section. The | |
e0890092 AM |
1188 | relocation routines are going to handle it specially. |
1189 | Don't change the value. */ | |
49309057 | 1190 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1191 | break; |
1192 | } | |
1193 | ||
6386f3a7 | 1194 | if (finalize_syms && final_val == 0) |
49309057 ILT |
1195 | { |
1196 | if (LOCAL_SYMBOL_CHECK (add_symbol)) | |
1197 | add_symbol = local_symbol_convert ((struct local_symbol *) | |
1198 | add_symbol); | |
1199 | copy_symbol_attributes (symp, add_symbol); | |
1200 | } | |
252b5132 | 1201 | |
e0890092 AM |
1202 | /* If we have equated this symbol to an undefined or common |
1203 | symbol, keep X_op set to O_symbol, and don't change | |
1204 | X_add_number. This permits the routine which writes out | |
1205 | relocation to detect this case, and convert the | |
1206 | relocation to be against the symbol to which this symbol | |
1207 | is equated. */ | |
977cdf5a | 1208 | if (! S_IS_DEFINED (add_symbol) |
7be1c489 | 1209 | #if defined (OBJ_COFF) && defined (TE_PE) |
977cdf5a NC |
1210 | || S_IS_WEAK (add_symbol) |
1211 | #endif | |
1212 | || S_IS_COMMON (add_symbol)) | |
252b5132 | 1213 | { |
6386f3a7 | 1214 | if (finalize_syms) |
252b5132 | 1215 | { |
252b5132 RH |
1216 | symp->sy_value.X_op = O_symbol; |
1217 | symp->sy_value.X_add_symbol = add_symbol; | |
1218 | symp->sy_value.X_add_number = final_val; | |
e0890092 AM |
1219 | /* Use X_op_symbol as a flag. */ |
1220 | symp->sy_value.X_op_symbol = add_symbol; | |
252b5132 | 1221 | } |
5a0ade8b | 1222 | final_seg = seg_left; |
252b5132 | 1223 | final_val = 0; |
49309057 | 1224 | resolved = symbol_resolved_p (add_symbol); |
c89c8534 | 1225 | symp->sy_resolving = 0; |
252b5132 RH |
1226 | goto exit_dont_set_value; |
1227 | } | |
0023dd27 AM |
1228 | else if (finalize_syms |
1229 | && ((final_seg == expr_section && seg_left != expr_section) | |
1230 | || symbol_shadow_p (symp))) | |
e0890092 AM |
1231 | { |
1232 | /* If the symbol is an expression symbol, do similarly | |
1233 | as for undefined and common syms above. Handles | |
1234 | "sym +/- expr" where "expr" cannot be evaluated | |
1235 | immediately, and we want relocations to be against | |
1236 | "sym", eg. because it is weak. */ | |
1237 | symp->sy_value.X_op = O_symbol; | |
1238 | symp->sy_value.X_add_symbol = add_symbol; | |
1239 | symp->sy_value.X_add_number = final_val; | |
1240 | symp->sy_value.X_op_symbol = add_symbol; | |
1241 | final_seg = seg_left; | |
1242 | final_val += symp->sy_frag->fr_address + left; | |
1243 | resolved = symbol_resolved_p (add_symbol); | |
1244 | symp->sy_resolving = 0; | |
1245 | goto exit_dont_set_value; | |
1246 | } | |
252b5132 RH |
1247 | else |
1248 | { | |
1249 | final_val += symp->sy_frag->fr_address + left; | |
1250 | if (final_seg == expr_section || final_seg == undefined_section) | |
e0890092 | 1251 | final_seg = seg_left; |
252b5132 RH |
1252 | } |
1253 | ||
49309057 | 1254 | resolved = symbol_resolved_p (add_symbol); |
06e77878 AO |
1255 | if (S_IS_WEAKREFR (symp)) |
1256 | goto exit_dont_set_value; | |
252b5132 RH |
1257 | break; |
1258 | ||
1259 | case O_uminus: | |
1260 | case O_bit_not: | |
1261 | case O_logical_not: | |
6386f3a7 | 1262 | left = resolve_symbol_value (add_symbol); |
784b640d | 1263 | seg_left = S_GET_SEGMENT (add_symbol); |
252b5132 | 1264 | |
0909233e AM |
1265 | /* By reducing these to the relevant dyadic operator, we get |
1266 | !S -> S == 0 permitted on anything, | |
1267 | -S -> 0 - S only permitted on absolute | |
1268 | ~S -> S ^ ~0 only permitted on absolute */ | |
1269 | if (op != O_logical_not && seg_left != absolute_section | |
1270 | && finalize_syms) | |
5a0ade8b | 1271 | report_op_error (symp, NULL, op, add_symbol); |
1d3b2b27 | 1272 | |
0909233e AM |
1273 | if (final_seg == expr_section || final_seg == undefined_section) |
1274 | final_seg = absolute_section; | |
1d3b2b27 | 1275 | |
252b5132 RH |
1276 | if (op == O_uminus) |
1277 | left = -left; | |
1278 | else if (op == O_logical_not) | |
1279 | left = !left; | |
1280 | else | |
1281 | left = ~left; | |
1282 | ||
1283 | final_val += left + symp->sy_frag->fr_address; | |
252b5132 | 1284 | |
49309057 | 1285 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1286 | break; |
1287 | ||
1288 | case O_multiply: | |
1289 | case O_divide: | |
1290 | case O_modulus: | |
1291 | case O_left_shift: | |
1292 | case O_right_shift: | |
1293 | case O_bit_inclusive_or: | |
1294 | case O_bit_or_not: | |
1295 | case O_bit_exclusive_or: | |
1296 | case O_bit_and: | |
1297 | case O_add: | |
1298 | case O_subtract: | |
1299 | case O_eq: | |
1300 | case O_ne: | |
1301 | case O_lt: | |
1302 | case O_le: | |
1303 | case O_ge: | |
1304 | case O_gt: | |
1305 | case O_logical_and: | |
1306 | case O_logical_or: | |
6386f3a7 AM |
1307 | left = resolve_symbol_value (add_symbol); |
1308 | right = resolve_symbol_value (op_symbol); | |
252b5132 RH |
1309 | seg_left = S_GET_SEGMENT (add_symbol); |
1310 | seg_right = S_GET_SEGMENT (op_symbol); | |
1311 | ||
1312 | /* Simplify addition or subtraction of a constant by folding the | |
1313 | constant into X_add_number. */ | |
e0890092 | 1314 | if (op == O_add) |
252b5132 RH |
1315 | { |
1316 | if (seg_right == absolute_section) | |
1317 | { | |
e0890092 | 1318 | final_val += right; |
252b5132 RH |
1319 | goto do_symbol; |
1320 | } | |
e0890092 | 1321 | else if (seg_left == absolute_section) |
252b5132 | 1322 | { |
252b5132 RH |
1323 | final_val += left; |
1324 | add_symbol = op_symbol; | |
1325 | left = right; | |
e0890092 AM |
1326 | seg_left = seg_right; |
1327 | goto do_symbol; | |
1328 | } | |
1329 | } | |
1330 | else if (op == O_subtract) | |
1331 | { | |
1332 | if (seg_right == absolute_section) | |
1333 | { | |
1334 | final_val -= right; | |
252b5132 RH |
1335 | goto do_symbol; |
1336 | } | |
1337 | } | |
1338 | ||
2d034539 | 1339 | move_seg_ok = 1; |
e0890092 AM |
1340 | /* Equality and non-equality tests are permitted on anything. |
1341 | Subtraction, and other comparison operators are permitted if | |
1342 | both operands are in the same section. Otherwise, both | |
1343 | operands must be absolute. We already handled the case of | |
1344 | addition or subtraction of a constant above. This will | |
1345 | probably need to be changed for an object file format which | |
2d034539 NC |
1346 | supports arbitrary expressions, such as IEEE-695. */ |
1347 | if (!(seg_left == absolute_section | |
5a0ade8b | 1348 | && seg_right == absolute_section) |
0909233e AM |
1349 | && !(op == O_eq || op == O_ne) |
1350 | && !((op == O_subtract | |
1351 | || op == O_lt || op == O_le || op == O_ge || op == O_gt) | |
1352 | && seg_left == seg_right | |
1353 | && (seg_left != undefined_section | |
1354 | || add_symbol == op_symbol))) | |
2d034539 NC |
1355 | { |
1356 | /* Don't emit messages unless we're finalizing the symbol value, | |
1357 | otherwise we may get the same message multiple times. */ | |
1358 | if (finalize_syms) | |
5a0ade8b | 1359 | report_op_error (symp, add_symbol, op, op_symbol); |
2d034539 NC |
1360 | /* However do not move the symbol into the absolute section |
1361 | if it cannot currently be resolved - this would confuse | |
1362 | other parts of the assembler into believing that the | |
1363 | expression had been evaluated to zero. */ | |
1364 | else | |
1365 | move_seg_ok = 0; | |
1366 | } | |
1d3b2b27 | 1367 | |
2d034539 NC |
1368 | if (move_seg_ok |
1369 | && (final_seg == expr_section || final_seg == undefined_section)) | |
0909233e | 1370 | final_seg = absolute_section; |
252b5132 RH |
1371 | |
1372 | /* Check for division by zero. */ | |
1373 | if ((op == O_divide || op == O_modulus) && right == 0) | |
1374 | { | |
1375 | /* If seg_right is not absolute_section, then we've | |
e0890092 | 1376 | already issued a warning about using a bad symbol. */ |
6386f3a7 | 1377 | if (seg_right == absolute_section && finalize_syms) |
252b5132 RH |
1378 | { |
1379 | char *file; | |
1380 | unsigned int line; | |
1381 | ||
1382 | if (expr_symbol_where (symp, &file, &line)) | |
1383 | as_bad_where (file, line, _("division by zero")); | |
1384 | else | |
0e389e77 | 1385 | as_bad (_("division by zero when setting `%s'"), |
252b5132 RH |
1386 | S_GET_NAME (symp)); |
1387 | } | |
1388 | ||
1389 | right = 1; | |
1390 | } | |
1391 | ||
1392 | switch (symp->sy_value.X_op) | |
1393 | { | |
1394 | case O_multiply: left *= right; break; | |
1395 | case O_divide: left /= right; break; | |
1396 | case O_modulus: left %= right; break; | |
1397 | case O_left_shift: left <<= right; break; | |
1398 | case O_right_shift: left >>= right; break; | |
1399 | case O_bit_inclusive_or: left |= right; break; | |
1400 | case O_bit_or_not: left |= ~right; break; | |
1401 | case O_bit_exclusive_or: left ^= right; break; | |
1402 | case O_bit_and: left &= right; break; | |
1403 | case O_add: left += right; break; | |
1404 | case O_subtract: left -= right; break; | |
e0890092 AM |
1405 | case O_eq: |
1406 | case O_ne: | |
1407 | left = (left == right && seg_left == seg_right | |
1408 | && (seg_left != undefined_section | |
1409 | || add_symbol == op_symbol) | |
1410 | ? ~ (offsetT) 0 : 0); | |
1411 | if (symp->sy_value.X_op == O_ne) | |
1412 | left = ~left; | |
1413 | break; | |
252b5132 RH |
1414 | case O_lt: left = left < right ? ~ (offsetT) 0 : 0; break; |
1415 | case O_le: left = left <= right ? ~ (offsetT) 0 : 0; break; | |
1416 | case O_ge: left = left >= right ? ~ (offsetT) 0 : 0; break; | |
1417 | case O_gt: left = left > right ? ~ (offsetT) 0 : 0; break; | |
1418 | case O_logical_and: left = left && right; break; | |
1419 | case O_logical_or: left = left || right; break; | |
1420 | default: abort (); | |
1421 | } | |
1422 | ||
1423 | final_val += symp->sy_frag->fr_address + left; | |
1424 | if (final_seg == expr_section || final_seg == undefined_section) | |
784b640d AM |
1425 | { |
1426 | if (seg_left == undefined_section | |
1427 | || seg_right == undefined_section) | |
1428 | final_seg = undefined_section; | |
1429 | else if (seg_left == absolute_section) | |
1430 | final_seg = seg_right; | |
1431 | else | |
1432 | final_seg = seg_left; | |
1433 | } | |
49309057 ILT |
1434 | resolved = (symbol_resolved_p (add_symbol) |
1435 | && symbol_resolved_p (op_symbol)); | |
7c743825 | 1436 | break; |
252b5132 | 1437 | |
252b5132 RH |
1438 | case O_big: |
1439 | case O_illegal: | |
1440 | /* Give an error (below) if not in expr_section. We don't | |
1441 | want to worry about expr_section symbols, because they | |
1442 | are fictional (they are created as part of expression | |
1443 | resolution), and any problems may not actually mean | |
1444 | anything. */ | |
1445 | break; | |
1446 | } | |
1447 | ||
1448 | symp->sy_resolving = 0; | |
1449 | } | |
1450 | ||
6386f3a7 | 1451 | if (finalize_syms) |
05bdb37e | 1452 | S_SET_VALUE (symp, final_val); |
252b5132 | 1453 | |
05bdb37e AM |
1454 | exit_dont_set_value: |
1455 | /* Always set the segment, even if not finalizing the value. | |
1456 | The segment is used to determine whether a symbol is defined. */ | |
05bdb37e | 1457 | S_SET_SEGMENT (symp, final_seg); |
252b5132 | 1458 | |
252b5132 | 1459 | /* Don't worry if we can't resolve an expr_section symbol. */ |
6386f3a7 | 1460 | if (finalize_syms) |
252b5132 RH |
1461 | { |
1462 | if (resolved) | |
1463 | symp->sy_resolved = 1; | |
1464 | else if (S_GET_SEGMENT (symp) != expr_section) | |
1465 | { | |
0e389e77 | 1466 | as_bad (_("can't resolve value for symbol `%s'"), |
7c743825 | 1467 | S_GET_NAME (symp)); |
252b5132 RH |
1468 | symp->sy_resolved = 1; |
1469 | } | |
1470 | } | |
1471 | ||
1472 | return final_val; | |
1473 | } | |
1474 | ||
5a49b8ac | 1475 | static void resolve_local_symbol (const char *, void *); |
49309057 ILT |
1476 | |
1477 | /* A static function passed to hash_traverse. */ | |
1478 | ||
1479 | static void | |
5a49b8ac | 1480 | resolve_local_symbol (const char *key ATTRIBUTE_UNUSED, void *value) |
49309057 ILT |
1481 | { |
1482 | if (value != NULL) | |
1e9cc1c2 | 1483 | resolve_symbol_value ((symbolS *) value); |
49309057 ILT |
1484 | } |
1485 | ||
49309057 ILT |
1486 | /* Resolve all local symbols. */ |
1487 | ||
1488 | void | |
74937d39 | 1489 | resolve_local_symbol_values (void) |
49309057 | 1490 | { |
49309057 | 1491 | hash_traverse (local_hash, resolve_local_symbol); |
49309057 ILT |
1492 | } |
1493 | ||
9497f5ac NC |
1494 | /* Obtain the current value of a symbol without changing any |
1495 | sub-expressions used. */ | |
1496 | ||
1497 | int | |
2e1e12b1 | 1498 | snapshot_symbol (symbolS **symbolPP, valueT *valueP, segT *segP, fragS **fragPP) |
9497f5ac | 1499 | { |
2e1e12b1 JB |
1500 | symbolS *symbolP = *symbolPP; |
1501 | ||
9497f5ac NC |
1502 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
1503 | { | |
1504 | struct local_symbol *locsym = (struct local_symbol *) symbolP; | |
1505 | ||
1506 | *valueP = locsym->lsy_value; | |
1507 | *segP = locsym->lsy_section; | |
1508 | *fragPP = local_symbol_get_frag (locsym); | |
1509 | } | |
1510 | else | |
1511 | { | |
91d6fa6a | 1512 | expressionS exp = symbolP->sy_value; |
9497f5ac | 1513 | |
91d6fa6a | 1514 | if (!symbolP->sy_resolved && exp.X_op != O_illegal) |
9497f5ac NC |
1515 | { |
1516 | int resolved; | |
1517 | ||
1518 | if (symbolP->sy_resolving) | |
1519 | return 0; | |
1520 | symbolP->sy_resolving = 1; | |
91d6fa6a | 1521 | resolved = resolve_expression (&exp); |
9497f5ac NC |
1522 | symbolP->sy_resolving = 0; |
1523 | if (!resolved) | |
1524 | return 0; | |
1525 | ||
91d6fa6a | 1526 | switch (exp.X_op) |
9497f5ac NC |
1527 | { |
1528 | case O_constant: | |
1529 | case O_register: | |
2e1e12b1 | 1530 | if (!symbol_equated_p (symbolP)) |
9497f5ac NC |
1531 | break; |
1532 | /* Fall thru. */ | |
1533 | case O_symbol: | |
1534 | case O_symbol_rva: | |
91d6fa6a | 1535 | symbolP = exp.X_add_symbol; |
9497f5ac NC |
1536 | break; |
1537 | default: | |
1538 | return 0; | |
1539 | } | |
1540 | } | |
1541 | ||
d96eea71 | 1542 | *symbolPP = symbolP; |
91d6fa6a | 1543 | *valueP = exp.X_add_number; |
9497f5ac NC |
1544 | *segP = symbolP->bsym->section; |
1545 | *fragPP = symbolP->sy_frag; | |
1546 | ||
1547 | if (*segP == expr_section) | |
91d6fa6a | 1548 | switch (exp.X_op) |
9497f5ac NC |
1549 | { |
1550 | case O_constant: *segP = absolute_section; break; | |
1551 | case O_register: *segP = reg_section; break; | |
1552 | default: break; | |
1553 | } | |
1554 | } | |
1555 | ||
1556 | return 1; | |
1557 | } | |
1558 | ||
252b5132 RH |
1559 | /* Dollar labels look like a number followed by a dollar sign. Eg, "42$". |
1560 | They are *really* local. That is, they go out of scope whenever we see a | |
1561 | label that isn't local. Also, like fb labels, there can be multiple | |
1562 | instances of a dollar label. Therefor, we name encode each instance with | |
1563 | the instance number, keep a list of defined symbols separate from the real | |
1564 | symbol table, and we treat these buggers as a sparse array. */ | |
1565 | ||
1566 | static long *dollar_labels; | |
1567 | static long *dollar_label_instances; | |
1568 | static char *dollar_label_defines; | |
1569 | static unsigned long dollar_label_count; | |
1570 | static unsigned long dollar_label_max; | |
1571 | ||
7c743825 | 1572 | int |
74937d39 | 1573 | dollar_label_defined (long label) |
252b5132 RH |
1574 | { |
1575 | long *i; | |
1576 | ||
1577 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1578 | ||
1579 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1580 | if (*i == label) | |
1581 | return dollar_label_defines[i - dollar_labels]; | |
1582 | ||
7c743825 | 1583 | /* If we get here, label isn't defined. */ |
252b5132 | 1584 | return 0; |
7c743825 | 1585 | } |
252b5132 RH |
1586 | |
1587 | static long | |
74937d39 | 1588 | dollar_label_instance (long label) |
252b5132 RH |
1589 | { |
1590 | long *i; | |
1591 | ||
1592 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1593 | ||
1594 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1595 | if (*i == label) | |
1596 | return (dollar_label_instances[i - dollar_labels]); | |
1597 | ||
7c743825 KH |
1598 | /* If we get here, we haven't seen the label before. |
1599 | Therefore its instance count is zero. */ | |
252b5132 RH |
1600 | return 0; |
1601 | } | |
1602 | ||
7c743825 | 1603 | void |
74937d39 | 1604 | dollar_label_clear (void) |
252b5132 RH |
1605 | { |
1606 | memset (dollar_label_defines, '\0', (unsigned int) dollar_label_count); | |
1607 | } | |
1608 | ||
1609 | #define DOLLAR_LABEL_BUMP_BY 10 | |
1610 | ||
7c743825 | 1611 | void |
74937d39 | 1612 | define_dollar_label (long label) |
252b5132 RH |
1613 | { |
1614 | long *i; | |
1615 | ||
1616 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1617 | if (*i == label) | |
1618 | { | |
1619 | ++dollar_label_instances[i - dollar_labels]; | |
1620 | dollar_label_defines[i - dollar_labels] = 1; | |
1621 | return; | |
1622 | } | |
1623 | ||
7c743825 | 1624 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1625 | |
1626 | if (dollar_labels == NULL) | |
1627 | { | |
1628 | dollar_labels = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long)); | |
1629 | dollar_label_instances = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long)); | |
1e9cc1c2 | 1630 | dollar_label_defines = (char *) xmalloc (DOLLAR_LABEL_BUMP_BY); |
252b5132 RH |
1631 | dollar_label_max = DOLLAR_LABEL_BUMP_BY; |
1632 | dollar_label_count = 0; | |
1633 | } | |
1634 | else if (dollar_label_count == dollar_label_max) | |
1635 | { | |
1636 | dollar_label_max += DOLLAR_LABEL_BUMP_BY; | |
1637 | dollar_labels = (long *) xrealloc ((char *) dollar_labels, | |
1638 | dollar_label_max * sizeof (long)); | |
1639 | dollar_label_instances = (long *) xrealloc ((char *) dollar_label_instances, | |
1640 | dollar_label_max * sizeof (long)); | |
1e9cc1c2 | 1641 | dollar_label_defines = (char *) xrealloc (dollar_label_defines, dollar_label_max); |
7c743825 | 1642 | } /* if we needed to grow */ |
252b5132 RH |
1643 | |
1644 | dollar_labels[dollar_label_count] = label; | |
1645 | dollar_label_instances[dollar_label_count] = 1; | |
1646 | dollar_label_defines[dollar_label_count] = 1; | |
1647 | ++dollar_label_count; | |
1648 | } | |
1649 | ||
7c743825 KH |
1650 | /* Caller must copy returned name: we re-use the area for the next name. |
1651 | ||
1652 | The mth occurence of label n: is turned into the symbol "Ln^Am" | |
1653 | where n is the label number and m is the instance number. "L" makes | |
1654 | it a label discarded unless debugging and "^A"('\1') ensures no | |
1655 | ordinary symbol SHOULD get the same name as a local label | |
1656 | symbol. The first "4:" is "L4^A1" - the m numbers begin at 1. | |
1657 | ||
1658 | fb labels get the same treatment, except that ^B is used in place | |
1659 | of ^A. */ | |
1660 | ||
1661 | char * /* Return local label name. */ | |
74937d39 KH |
1662 | dollar_label_name (register long n, /* we just saw "n$:" : n a number. */ |
1663 | register int augend /* 0 for current instance, 1 for new instance. */) | |
252b5132 RH |
1664 | { |
1665 | long i; | |
7c743825 | 1666 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 RH |
1667 | static char symbol_name_build[24]; |
1668 | register char *p; | |
1669 | register char *q; | |
7c743825 | 1670 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1671 | |
1672 | know (n >= 0); | |
1673 | know (augend == 0 || augend == 1); | |
1674 | p = symbol_name_build; | |
f84dd1f0 NC |
1675 | #ifdef LOCAL_LABEL_PREFIX |
1676 | *p++ = LOCAL_LABEL_PREFIX; | |
1677 | #endif | |
252b5132 RH |
1678 | *p++ = 'L'; |
1679 | ||
7c743825 KH |
1680 | /* Next code just does sprintf( {}, "%d", n); */ |
1681 | /* Label number. */ | |
252b5132 RH |
1682 | q = symbol_name_temporary; |
1683 | for (*q++ = 0, i = n; i; ++q) | |
1684 | { | |
1685 | *q = i % 10 + '0'; | |
1686 | i /= 10; | |
1687 | } | |
1688 | while ((*p = *--q) != '\0') | |
1689 | ++p; | |
1690 | ||
aa257fcd | 1691 | *p++ = DOLLAR_LABEL_CHAR; /* ^A */ |
252b5132 | 1692 | |
7c743825 | 1693 | /* Instance number. */ |
252b5132 RH |
1694 | q = symbol_name_temporary; |
1695 | for (*q++ = 0, i = dollar_label_instance (n) + augend; i; ++q) | |
1696 | { | |
1697 | *q = i % 10 + '0'; | |
1698 | i /= 10; | |
1699 | } | |
1700 | while ((*p++ = *--q) != '\0');; | |
1701 | ||
7c743825 | 1702 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 RH |
1703 | return symbol_name_build; |
1704 | } | |
1705 | ||
47eebc20 | 1706 | /* Somebody else's idea of local labels. They are made by "n:" where n |
7c743825 KH |
1707 | is any decimal digit. Refer to them with |
1708 | "nb" for previous (backward) n: | |
1709 | or "nf" for next (forward) n:. | |
1710 | ||
1711 | We do a little better and let n be any number, not just a single digit, but | |
1712 | since the other guy's assembler only does ten, we treat the first ten | |
1713 | specially. | |
1714 | ||
1715 | Like someone else's assembler, we have one set of local label counters for | |
1716 | entire assembly, not one set per (sub)segment like in most assemblers. This | |
1717 | implies that one can refer to a label in another segment, and indeed some | |
1718 | crufty compilers have done just that. | |
1719 | ||
1720 | Since there could be a LOT of these things, treat them as a sparse | |
1721 | array. */ | |
252b5132 RH |
1722 | |
1723 | #define FB_LABEL_SPECIAL (10) | |
1724 | ||
1725 | static long fb_low_counter[FB_LABEL_SPECIAL]; | |
1726 | static long *fb_labels; | |
1727 | static long *fb_label_instances; | |
1728 | static long fb_label_count; | |
1729 | static long fb_label_max; | |
1730 | ||
7c743825 | 1731 | /* This must be more than FB_LABEL_SPECIAL. */ |
252b5132 RH |
1732 | #define FB_LABEL_BUMP_BY (FB_LABEL_SPECIAL + 6) |
1733 | ||
7c743825 | 1734 | static void |
74937d39 | 1735 | fb_label_init (void) |
252b5132 RH |
1736 | { |
1737 | memset ((void *) fb_low_counter, '\0', sizeof (fb_low_counter)); | |
7c743825 | 1738 | } |
252b5132 | 1739 | |
7c743825 KH |
1740 | /* Add one to the instance number of this fb label. */ |
1741 | ||
1742 | void | |
74937d39 | 1743 | fb_label_instance_inc (long label) |
252b5132 RH |
1744 | { |
1745 | long *i; | |
1746 | ||
1747 | if (label < FB_LABEL_SPECIAL) | |
1748 | { | |
1749 | ++fb_low_counter[label]; | |
1750 | return; | |
1751 | } | |
1752 | ||
1753 | if (fb_labels != NULL) | |
1754 | { | |
1755 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1756 | i < fb_labels + fb_label_count; ++i) | |
1757 | { | |
1758 | if (*i == label) | |
1759 | { | |
1760 | ++fb_label_instances[i - fb_labels]; | |
1761 | return; | |
7c743825 KH |
1762 | } /* if we find it */ |
1763 | } /* for each existing label */ | |
252b5132 RH |
1764 | } |
1765 | ||
7c743825 | 1766 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1767 | |
1768 | if (fb_labels == NULL) | |
1769 | { | |
1770 | fb_labels = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long)); | |
1771 | fb_label_instances = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long)); | |
1772 | fb_label_max = FB_LABEL_BUMP_BY; | |
1773 | fb_label_count = FB_LABEL_SPECIAL; | |
1774 | ||
1775 | } | |
1776 | else if (fb_label_count == fb_label_max) | |
1777 | { | |
1778 | fb_label_max += FB_LABEL_BUMP_BY; | |
1779 | fb_labels = (long *) xrealloc ((char *) fb_labels, | |
1780 | fb_label_max * sizeof (long)); | |
1781 | fb_label_instances = (long *) xrealloc ((char *) fb_label_instances, | |
1782 | fb_label_max * sizeof (long)); | |
7c743825 | 1783 | } /* if we needed to grow */ |
252b5132 RH |
1784 | |
1785 | fb_labels[fb_label_count] = label; | |
1786 | fb_label_instances[fb_label_count] = 1; | |
1787 | ++fb_label_count; | |
1788 | } | |
1789 | ||
7c743825 | 1790 | static long |
74937d39 | 1791 | fb_label_instance (long label) |
252b5132 RH |
1792 | { |
1793 | long *i; | |
1794 | ||
1795 | if (label < FB_LABEL_SPECIAL) | |
1796 | { | |
1797 | return (fb_low_counter[label]); | |
1798 | } | |
1799 | ||
1800 | if (fb_labels != NULL) | |
1801 | { | |
1802 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1803 | i < fb_labels + fb_label_count; ++i) | |
1804 | { | |
1805 | if (*i == label) | |
1806 | { | |
1807 | return (fb_label_instances[i - fb_labels]); | |
7c743825 KH |
1808 | } /* if we find it */ |
1809 | } /* for each existing label */ | |
252b5132 RH |
1810 | } |
1811 | ||
1812 | /* We didn't find the label, so this must be a reference to the | |
1813 | first instance. */ | |
1814 | return 0; | |
1815 | } | |
1816 | ||
7c743825 KH |
1817 | /* Caller must copy returned name: we re-use the area for the next name. |
1818 | ||
1819 | The mth occurence of label n: is turned into the symbol "Ln^Bm" | |
1820 | where n is the label number and m is the instance number. "L" makes | |
1821 | it a label discarded unless debugging and "^B"('\2') ensures no | |
1822 | ordinary symbol SHOULD get the same name as a local label | |
1823 | symbol. The first "4:" is "L4^B1" - the m numbers begin at 1. | |
1824 | ||
1825 | dollar labels get the same treatment, except that ^A is used in | |
1826 | place of ^B. */ | |
1827 | ||
1828 | char * /* Return local label name. */ | |
74937d39 KH |
1829 | fb_label_name (long n, /* We just saw "n:", "nf" or "nb" : n a number. */ |
1830 | long augend /* 0 for nb, 1 for n:, nf. */) | |
252b5132 RH |
1831 | { |
1832 | long i; | |
7c743825 | 1833 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 RH |
1834 | static char symbol_name_build[24]; |
1835 | register char *p; | |
1836 | register char *q; | |
7c743825 | 1837 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1838 | |
1839 | know (n >= 0); | |
a76903bf | 1840 | #ifdef TC_MMIX |
71ba24a1 | 1841 | know ((unsigned long) augend <= 2 /* See mmix_fb_label. */); |
a76903bf | 1842 | #else |
71ba24a1 | 1843 | know ((unsigned long) augend <= 1); |
a76903bf | 1844 | #endif |
252b5132 | 1845 | p = symbol_name_build; |
aa257fcd NC |
1846 | #ifdef LOCAL_LABEL_PREFIX |
1847 | *p++ = LOCAL_LABEL_PREFIX; | |
1848 | #endif | |
252b5132 RH |
1849 | *p++ = 'L'; |
1850 | ||
7c743825 KH |
1851 | /* Next code just does sprintf( {}, "%d", n); */ |
1852 | /* Label number. */ | |
252b5132 RH |
1853 | q = symbol_name_temporary; |
1854 | for (*q++ = 0, i = n; i; ++q) | |
1855 | { | |
1856 | *q = i % 10 + '0'; | |
1857 | i /= 10; | |
1858 | } | |
1859 | while ((*p = *--q) != '\0') | |
1860 | ++p; | |
1861 | ||
aa257fcd | 1862 | *p++ = LOCAL_LABEL_CHAR; /* ^B */ |
252b5132 | 1863 | |
7c743825 | 1864 | /* Instance number. */ |
252b5132 RH |
1865 | q = symbol_name_temporary; |
1866 | for (*q++ = 0, i = fb_label_instance (n) + augend; i; ++q) | |
1867 | { | |
1868 | *q = i % 10 + '0'; | |
1869 | i /= 10; | |
1870 | } | |
1871 | while ((*p++ = *--q) != '\0');; | |
1872 | ||
7c743825 | 1873 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 | 1874 | return (symbol_name_build); |
7c743825 | 1875 | } |
252b5132 | 1876 | |
7c743825 KH |
1877 | /* Decode name that may have been generated by foo_label_name() above. |
1878 | If the name wasn't generated by foo_label_name(), then return it | |
1879 | unaltered. This is used for error messages. */ | |
252b5132 RH |
1880 | |
1881 | char * | |
74937d39 | 1882 | decode_local_label_name (char *s) |
252b5132 RH |
1883 | { |
1884 | char *p; | |
1885 | char *symbol_decode; | |
1886 | int label_number; | |
1887 | int instance_number; | |
1888 | char *type; | |
d95767bf | 1889 | const char *message_format; |
91d6fa6a | 1890 | int lindex = 0; |
43ad3147 | 1891 | |
aa257fcd | 1892 | #ifdef LOCAL_LABEL_PREFIX |
91d6fa6a NC |
1893 | if (s[lindex] == LOCAL_LABEL_PREFIX) |
1894 | ++lindex; | |
aa257fcd | 1895 | #endif |
43ad3147 | 1896 | |
91d6fa6a | 1897 | if (s[lindex] != 'L') |
252b5132 RH |
1898 | return s; |
1899 | ||
91d6fa6a | 1900 | for (label_number = 0, p = s + lindex + 1; ISDIGIT (*p); ++p) |
252b5132 RH |
1901 | label_number = (10 * label_number) + *p - '0'; |
1902 | ||
aa257fcd | 1903 | if (*p == DOLLAR_LABEL_CHAR) |
252b5132 | 1904 | type = "dollar"; |
aa257fcd | 1905 | else if (*p == LOCAL_LABEL_CHAR) |
252b5132 RH |
1906 | type = "fb"; |
1907 | else | |
1908 | return s; | |
1909 | ||
3882b010 | 1910 | for (instance_number = 0, p++; ISDIGIT (*p); ++p) |
252b5132 RH |
1911 | instance_number = (10 * instance_number) + *p - '0'; |
1912 | ||
d95767bf | 1913 | message_format = _("\"%d\" (instance number %d of a %s label)"); |
1e9cc1c2 | 1914 | symbol_decode = (char *) obstack_alloc (¬es, strlen (message_format) + 30); |
252b5132 RH |
1915 | sprintf (symbol_decode, message_format, label_number, instance_number, type); |
1916 | ||
1917 | return symbol_decode; | |
1918 | } | |
1919 | ||
1920 | /* Get the value of a symbol. */ | |
1921 | ||
1922 | valueT | |
74937d39 | 1923 | S_GET_VALUE (symbolS *s) |
252b5132 | 1924 | { |
49309057 | 1925 | if (LOCAL_SYMBOL_CHECK (s)) |
ac62c346 | 1926 | return resolve_symbol_value (s); |
49309057 | 1927 | |
ac62c346 | 1928 | if (!s->sy_resolved) |
e46d99eb | 1929 | { |
6386f3a7 AM |
1930 | valueT val = resolve_symbol_value (s); |
1931 | if (!finalize_syms) | |
e46d99eb AM |
1932 | return val; |
1933 | } | |
06e77878 AO |
1934 | if (S_IS_WEAKREFR (s)) |
1935 | return S_GET_VALUE (s->sy_value.X_add_symbol); | |
1936 | ||
252b5132 RH |
1937 | if (s->sy_value.X_op != O_constant) |
1938 | { | |
252b5132 RH |
1939 | if (! s->sy_resolved |
1940 | || s->sy_value.X_op != O_symbol | |
1941 | || (S_IS_DEFINED (s) && ! S_IS_COMMON (s))) | |
0e389e77 | 1942 | as_bad (_("attempt to get value of unresolved symbol `%s'"), |
252b5132 | 1943 | S_GET_NAME (s)); |
252b5132 RH |
1944 | } |
1945 | return (valueT) s->sy_value.X_add_number; | |
1946 | } | |
1947 | ||
1948 | /* Set the value of a symbol. */ | |
1949 | ||
1950 | void | |
74937d39 | 1951 | S_SET_VALUE (symbolS *s, valueT val) |
252b5132 | 1952 | { |
49309057 ILT |
1953 | if (LOCAL_SYMBOL_CHECK (s)) |
1954 | { | |
bd780143 | 1955 | ((struct local_symbol *) s)->lsy_value = val; |
49309057 ILT |
1956 | return; |
1957 | } | |
1958 | ||
252b5132 RH |
1959 | s->sy_value.X_op = O_constant; |
1960 | s->sy_value.X_add_number = (offsetT) val; | |
1961 | s->sy_value.X_unsigned = 0; | |
06e77878 | 1962 | S_CLEAR_WEAKREFR (s); |
252b5132 RH |
1963 | } |
1964 | ||
1965 | void | |
74937d39 | 1966 | copy_symbol_attributes (symbolS *dest, symbolS *src) |
252b5132 | 1967 | { |
49309057 | 1968 | if (LOCAL_SYMBOL_CHECK (dest)) |
7f2f689c | 1969 | dest = local_symbol_convert ((struct local_symbol *) dest); |
49309057 | 1970 | if (LOCAL_SYMBOL_CHECK (src)) |
7f2f689c | 1971 | src = local_symbol_convert ((struct local_symbol *) src); |
49309057 | 1972 | |
252b5132 RH |
1973 | /* In an expression, transfer the settings of these flags. |
1974 | The user can override later, of course. */ | |
ad04f5ce L |
1975 | #define COPIED_SYMFLAGS (BSF_FUNCTION | BSF_OBJECT \ |
1976 | | BSF_GNU_INDIRECT_FUNCTION) | |
252b5132 | 1977 | dest->bsym->flags |= src->bsym->flags & COPIED_SYMFLAGS; |
252b5132 RH |
1978 | |
1979 | #ifdef OBJ_COPY_SYMBOL_ATTRIBUTES | |
1980 | OBJ_COPY_SYMBOL_ATTRIBUTES (dest, src); | |
1981 | #endif | |
794ba86a DJ |
1982 | |
1983 | #ifdef TC_COPY_SYMBOL_ATTRIBUTES | |
1984 | TC_COPY_SYMBOL_ATTRIBUTES (dest, src); | |
1985 | #endif | |
252b5132 RH |
1986 | } |
1987 | ||
252b5132 | 1988 | int |
74937d39 | 1989 | S_IS_FUNCTION (symbolS *s) |
252b5132 | 1990 | { |
49309057 ILT |
1991 | flagword flags; |
1992 | ||
1993 | if (LOCAL_SYMBOL_CHECK (s)) | |
1994 | return 0; | |
1995 | ||
1996 | flags = s->bsym->flags; | |
252b5132 RH |
1997 | |
1998 | return (flags & BSF_FUNCTION) != 0; | |
1999 | } | |
2000 | ||
2001 | int | |
74937d39 | 2002 | S_IS_EXTERNAL (symbolS *s) |
252b5132 | 2003 | { |
49309057 ILT |
2004 | flagword flags; |
2005 | ||
2006 | if (LOCAL_SYMBOL_CHECK (s)) | |
2007 | return 0; | |
2008 | ||
2009 | flags = s->bsym->flags; | |
252b5132 | 2010 | |
7c743825 | 2011 | /* Sanity check. */ |
252b5132 RH |
2012 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
2013 | abort (); | |
2014 | ||
2015 | return (flags & BSF_GLOBAL) != 0; | |
2016 | } | |
2017 | ||
2018 | int | |
74937d39 | 2019 | S_IS_WEAK (symbolS *s) |
252b5132 | 2020 | { |
49309057 ILT |
2021 | if (LOCAL_SYMBOL_CHECK (s)) |
2022 | return 0; | |
06e77878 AO |
2023 | /* Conceptually, a weakrefr is weak if the referenced symbol is. We |
2024 | could probably handle a WEAKREFR as always weak though. E.g., if | |
2025 | the referenced symbol has lost its weak status, there's no reason | |
2026 | to keep handling the weakrefr as if it was weak. */ | |
2027 | if (S_IS_WEAKREFR (s)) | |
2028 | return S_IS_WEAK (s->sy_value.X_add_symbol); | |
252b5132 RH |
2029 | return (s->bsym->flags & BSF_WEAK) != 0; |
2030 | } | |
2031 | ||
06e77878 AO |
2032 | int |
2033 | S_IS_WEAKREFR (symbolS *s) | |
2034 | { | |
2035 | if (LOCAL_SYMBOL_CHECK (s)) | |
2036 | return 0; | |
2037 | return s->sy_weakrefr != 0; | |
2038 | } | |
2039 | ||
2040 | int | |
2041 | S_IS_WEAKREFD (symbolS *s) | |
2042 | { | |
2043 | if (LOCAL_SYMBOL_CHECK (s)) | |
2044 | return 0; | |
2045 | return s->sy_weakrefd != 0; | |
2046 | } | |
2047 | ||
252b5132 | 2048 | int |
74937d39 | 2049 | S_IS_COMMON (symbolS *s) |
252b5132 | 2050 | { |
49309057 ILT |
2051 | if (LOCAL_SYMBOL_CHECK (s)) |
2052 | return 0; | |
252b5132 RH |
2053 | return bfd_is_com_section (s->bsym->section); |
2054 | } | |
2055 | ||
2056 | int | |
74937d39 | 2057 | S_IS_DEFINED (symbolS *s) |
252b5132 | 2058 | { |
49309057 ILT |
2059 | if (LOCAL_SYMBOL_CHECK (s)) |
2060 | return ((struct local_symbol *) s)->lsy_section != undefined_section; | |
252b5132 RH |
2061 | return s->bsym->section != undefined_section; |
2062 | } | |
2063 | ||
a161fe53 AM |
2064 | |
2065 | #ifndef EXTERN_FORCE_RELOC | |
2066 | #define EXTERN_FORCE_RELOC IS_ELF | |
2067 | #endif | |
2068 | ||
2069 | /* Return true for symbols that should not be reduced to section | |
2070 | symbols or eliminated from expressions, because they may be | |
2071 | overridden by the linker. */ | |
2072 | int | |
74937d39 | 2073 | S_FORCE_RELOC (symbolS *s, int strict) |
a161fe53 AM |
2074 | { |
2075 | if (LOCAL_SYMBOL_CHECK (s)) | |
2076 | return ((struct local_symbol *) s)->lsy_section == undefined_section; | |
2077 | ||
ae6063d4 AM |
2078 | return ((strict |
2079 | && ((s->bsym->flags & BSF_WEAK) != 0 | |
2080 | || (EXTERN_FORCE_RELOC | |
2081 | && (s->bsym->flags & BSF_GLOBAL) != 0))) | |
c969da64 | 2082 | || (s->bsym->flags & BSF_GNU_INDIRECT_FUNCTION) != 0 |
a161fe53 AM |
2083 | || s->bsym->section == undefined_section |
2084 | || bfd_is_com_section (s->bsym->section)); | |
2085 | } | |
2086 | ||
252b5132 | 2087 | int |
74937d39 | 2088 | S_IS_DEBUG (symbolS *s) |
252b5132 | 2089 | { |
49309057 ILT |
2090 | if (LOCAL_SYMBOL_CHECK (s)) |
2091 | return 0; | |
252b5132 RH |
2092 | if (s->bsym->flags & BSF_DEBUGGING) |
2093 | return 1; | |
2094 | return 0; | |
2095 | } | |
2096 | ||
2097 | int | |
74937d39 | 2098 | S_IS_LOCAL (symbolS *s) |
252b5132 | 2099 | { |
49309057 | 2100 | flagword flags; |
252b5132 RH |
2101 | const char *name; |
2102 | ||
49309057 ILT |
2103 | if (LOCAL_SYMBOL_CHECK (s)) |
2104 | return 1; | |
2105 | ||
2106 | flags = s->bsym->flags; | |
2107 | ||
7c743825 | 2108 | /* Sanity check. */ |
252b5132 RH |
2109 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
2110 | abort (); | |
2111 | ||
2112 | if (bfd_get_section (s->bsym) == reg_section) | |
2113 | return 1; | |
2114 | ||
2115 | if (flag_strip_local_absolute | |
bb82af9f NC |
2116 | /* Keep BSF_FILE symbols in order to allow debuggers to identify |
2117 | the source file even when the object file is stripped. */ | |
2118 | && (flags & (BSF_GLOBAL | BSF_FILE)) == 0 | |
252b5132 RH |
2119 | && bfd_get_section (s->bsym) == absolute_section) |
2120 | return 1; | |
2121 | ||
2122 | name = S_GET_NAME (s); | |
2123 | return (name != NULL | |
2124 | && ! S_IS_DEBUG (s) | |
aa257fcd NC |
2125 | && (strchr (name, DOLLAR_LABEL_CHAR) |
2126 | || strchr (name, LOCAL_LABEL_CHAR) | |
df58fc94 | 2127 | || TC_LABEL_IS_LOCAL (name) |
252b5132 RH |
2128 | || (! flag_keep_locals |
2129 | && (bfd_is_local_label (stdoutput, s->bsym) | |
2130 | || (flag_mri | |
2131 | && name[0] == '?' | |
2132 | && name[1] == '?'))))); | |
2133 | } | |
2134 | ||
252b5132 | 2135 | int |
74937d39 | 2136 | S_IS_STABD (symbolS *s) |
252b5132 RH |
2137 | { |
2138 | return S_GET_NAME (s) == 0; | |
2139 | } | |
2140 | ||
9497f5ac NC |
2141 | int |
2142 | S_IS_VOLATILE (const symbolS *s) | |
2143 | { | |
2144 | if (LOCAL_SYMBOL_CHECK (s)) | |
2145 | return 0; | |
2146 | return s->sy_volatile; | |
2147 | } | |
2148 | ||
2149 | int | |
2150 | S_IS_FORWARD_REF (const symbolS *s) | |
2151 | { | |
2152 | if (LOCAL_SYMBOL_CHECK (s)) | |
2153 | return 0; | |
2154 | return s->sy_forward_ref; | |
2155 | } | |
2156 | ||
9758f3fc | 2157 | const char * |
74937d39 | 2158 | S_GET_NAME (symbolS *s) |
252b5132 | 2159 | { |
49309057 ILT |
2160 | if (LOCAL_SYMBOL_CHECK (s)) |
2161 | return ((struct local_symbol *) s)->lsy_name; | |
252b5132 RH |
2162 | return s->bsym->name; |
2163 | } | |
2164 | ||
2165 | segT | |
74937d39 | 2166 | S_GET_SEGMENT (symbolS *s) |
252b5132 | 2167 | { |
49309057 ILT |
2168 | if (LOCAL_SYMBOL_CHECK (s)) |
2169 | return ((struct local_symbol *) s)->lsy_section; | |
252b5132 RH |
2170 | return s->bsym->section; |
2171 | } | |
2172 | ||
2173 | void | |
74937d39 | 2174 | S_SET_SEGMENT (symbolS *s, segT seg) |
252b5132 RH |
2175 | { |
2176 | /* Don't reassign section symbols. The direct reason is to prevent seg | |
2177 | faults assigning back to const global symbols such as *ABS*, but it | |
2178 | shouldn't happen anyway. */ | |
2179 | ||
49309057 ILT |
2180 | if (LOCAL_SYMBOL_CHECK (s)) |
2181 | { | |
2182 | if (seg == reg_section) | |
2183 | s = local_symbol_convert ((struct local_symbol *) s); | |
2184 | else | |
2185 | { | |
2186 | ((struct local_symbol *) s)->lsy_section = seg; | |
2187 | return; | |
2188 | } | |
2189 | } | |
2190 | ||
252b5132 RH |
2191 | if (s->bsym->flags & BSF_SECTION_SYM) |
2192 | { | |
2193 | if (s->bsym->section != seg) | |
7c743825 | 2194 | abort (); |
252b5132 RH |
2195 | } |
2196 | else | |
2197 | s->bsym->section = seg; | |
2198 | } | |
2199 | ||
2200 | void | |
74937d39 | 2201 | S_SET_EXTERNAL (symbolS *s) |
252b5132 | 2202 | { |
49309057 ILT |
2203 | if (LOCAL_SYMBOL_CHECK (s)) |
2204 | s = local_symbol_convert ((struct local_symbol *) s); | |
252b5132 RH |
2205 | if ((s->bsym->flags & BSF_WEAK) != 0) |
2206 | { | |
2207 | /* Let .weak override .global. */ | |
2208 | return; | |
2209 | } | |
4d7c34bf NC |
2210 | if (s->bsym->flags & BSF_SECTION_SYM) |
2211 | { | |
2212 | char * file; | |
2213 | unsigned int line; | |
d1a6c242 | 2214 | |
4d7c34bf NC |
2215 | /* Do not reassign section symbols. */ |
2216 | as_where (& file, & line); | |
2217 | as_warn_where (file, line, | |
0e389e77 | 2218 | _("section symbols are already global")); |
4d7c34bf NC |
2219 | return; |
2220 | } | |
97c4f2d9 | 2221 | #ifndef TC_GLOBAL_REGISTER_SYMBOL_OK |
d0548f34 L |
2222 | if (S_GET_SEGMENT (s) == reg_section) |
2223 | { | |
2224 | as_bad ("can't make register symbol `%s' global", | |
2225 | S_GET_NAME (s)); | |
2226 | return; | |
2227 | } | |
97c4f2d9 | 2228 | #endif |
252b5132 | 2229 | s->bsym->flags |= BSF_GLOBAL; |
7c743825 | 2230 | s->bsym->flags &= ~(BSF_LOCAL | BSF_WEAK); |
977cdf5a | 2231 | |
22ba0981 | 2232 | #ifdef TE_PE |
977cdf5a NC |
2233 | if (! an_external_name && S_GET_NAME(s)[0] != '.') |
2234 | an_external_name = S_GET_NAME (s); | |
2235 | #endif | |
252b5132 RH |
2236 | } |
2237 | ||
2238 | void | |
74937d39 | 2239 | S_CLEAR_EXTERNAL (symbolS *s) |
252b5132 | 2240 | { |
49309057 ILT |
2241 | if (LOCAL_SYMBOL_CHECK (s)) |
2242 | return; | |
252b5132 RH |
2243 | if ((s->bsym->flags & BSF_WEAK) != 0) |
2244 | { | |
2245 | /* Let .weak override. */ | |
2246 | return; | |
2247 | } | |
2248 | s->bsym->flags |= BSF_LOCAL; | |
7c743825 | 2249 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_WEAK); |
252b5132 RH |
2250 | } |
2251 | ||
2252 | void | |
74937d39 | 2253 | S_SET_WEAK (symbolS *s) |
252b5132 | 2254 | { |
49309057 ILT |
2255 | if (LOCAL_SYMBOL_CHECK (s)) |
2256 | s = local_symbol_convert ((struct local_symbol *) s); | |
06e77878 AO |
2257 | #ifdef obj_set_weak_hook |
2258 | obj_set_weak_hook (s); | |
2259 | #endif | |
252b5132 | 2260 | s->bsym->flags |= BSF_WEAK; |
7c743825 | 2261 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_LOCAL); |
252b5132 RH |
2262 | } |
2263 | ||
06e77878 AO |
2264 | void |
2265 | S_SET_WEAKREFR (symbolS *s) | |
2266 | { | |
2267 | if (LOCAL_SYMBOL_CHECK (s)) | |
2268 | s = local_symbol_convert ((struct local_symbol *) s); | |
2269 | s->sy_weakrefr = 1; | |
2270 | /* If the alias was already used, make sure we mark the target as | |
2271 | used as well, otherwise it might be dropped from the symbol | |
2272 | table. This may have unintended side effects if the alias is | |
2273 | later redirected to another symbol, such as keeping the unused | |
2274 | previous target in the symbol table. Since it will be weak, it's | |
2275 | not a big deal. */ | |
2276 | if (s->sy_used) | |
2277 | symbol_mark_used (s->sy_value.X_add_symbol); | |
2278 | } | |
2279 | ||
2280 | void | |
2281 | S_CLEAR_WEAKREFR (symbolS *s) | |
2282 | { | |
2283 | if (LOCAL_SYMBOL_CHECK (s)) | |
2284 | return; | |
2285 | s->sy_weakrefr = 0; | |
2286 | } | |
2287 | ||
2288 | void | |
2289 | S_SET_WEAKREFD (symbolS *s) | |
2290 | { | |
2291 | if (LOCAL_SYMBOL_CHECK (s)) | |
2292 | s = local_symbol_convert ((struct local_symbol *) s); | |
2293 | s->sy_weakrefd = 1; | |
2294 | S_SET_WEAK (s); | |
2295 | } | |
2296 | ||
2297 | void | |
2298 | S_CLEAR_WEAKREFD (symbolS *s) | |
2299 | { | |
2300 | if (LOCAL_SYMBOL_CHECK (s)) | |
2301 | return; | |
2302 | if (s->sy_weakrefd) | |
2303 | { | |
2304 | s->sy_weakrefd = 0; | |
2305 | /* If a weakref target symbol is weak, then it was never | |
2306 | referenced directly before, not even in a .global directive, | |
2307 | so decay it to local. If it remains undefined, it will be | |
2308 | later turned into a global, like any other undefined | |
2309 | symbol. */ | |
2310 | if (s->bsym->flags & BSF_WEAK) | |
2311 | { | |
2312 | #ifdef obj_clear_weak_hook | |
2313 | obj_clear_weak_hook (s); | |
2314 | #endif | |
2315 | s->bsym->flags &= ~BSF_WEAK; | |
2316 | s->bsym->flags |= BSF_LOCAL; | |
2317 | } | |
2318 | } | |
2319 | } | |
2320 | ||
00f7efb6 | 2321 | void |
74937d39 | 2322 | S_SET_THREAD_LOCAL (symbolS *s) |
00f7efb6 JJ |
2323 | { |
2324 | if (LOCAL_SYMBOL_CHECK (s)) | |
2325 | s = local_symbol_convert ((struct local_symbol *) s); | |
2326 | if (bfd_is_com_section (s->bsym->section) | |
2327 | && (s->bsym->flags & BSF_THREAD_LOCAL) != 0) | |
2328 | return; | |
2329 | s->bsym->flags |= BSF_THREAD_LOCAL; | |
2330 | if ((s->bsym->flags & BSF_FUNCTION) != 0) | |
2331 | as_bad (_("Accessing function `%s' as thread-local object"), | |
2332 | S_GET_NAME (s)); | |
2333 | else if (! bfd_is_und_section (s->bsym->section) | |
2334 | && (s->bsym->section->flags & SEC_THREAD_LOCAL) == 0) | |
2335 | as_bad (_("Accessing `%s' as thread-local object"), | |
2336 | S_GET_NAME (s)); | |
2337 | } | |
2338 | ||
252b5132 | 2339 | void |
977cdf5a | 2340 | S_SET_NAME (symbolS *s, const char *name) |
252b5132 | 2341 | { |
49309057 ILT |
2342 | if (LOCAL_SYMBOL_CHECK (s)) |
2343 | { | |
2344 | ((struct local_symbol *) s)->lsy_name = name; | |
2345 | return; | |
2346 | } | |
252b5132 RH |
2347 | s->bsym->name = name; |
2348 | } | |
49309057 | 2349 | |
9497f5ac NC |
2350 | void |
2351 | S_SET_VOLATILE (symbolS *s) | |
2352 | { | |
2353 | if (LOCAL_SYMBOL_CHECK (s)) | |
2354 | s = local_symbol_convert ((struct local_symbol *) s); | |
2355 | s->sy_volatile = 1; | |
2356 | } | |
2357 | ||
92757bc9 JB |
2358 | void |
2359 | S_CLEAR_VOLATILE (symbolS *s) | |
2360 | { | |
2361 | if (!LOCAL_SYMBOL_CHECK (s)) | |
2362 | s->sy_volatile = 0; | |
2363 | } | |
2364 | ||
9497f5ac NC |
2365 | void |
2366 | S_SET_FORWARD_REF (symbolS *s) | |
2367 | { | |
2368 | if (LOCAL_SYMBOL_CHECK (s)) | |
2369 | s = local_symbol_convert ((struct local_symbol *) s); | |
2370 | s->sy_forward_ref = 1; | |
2371 | } | |
2372 | ||
49309057 ILT |
2373 | /* Return the previous symbol in a chain. */ |
2374 | ||
2375 | symbolS * | |
74937d39 | 2376 | symbol_previous (symbolS *s) |
49309057 ILT |
2377 | { |
2378 | if (LOCAL_SYMBOL_CHECK (s)) | |
2379 | abort (); | |
2380 | return s->sy_previous; | |
2381 | } | |
2382 | ||
49309057 ILT |
2383 | /* Return the next symbol in a chain. */ |
2384 | ||
2385 | symbolS * | |
74937d39 | 2386 | symbol_next (symbolS *s) |
49309057 ILT |
2387 | { |
2388 | if (LOCAL_SYMBOL_CHECK (s)) | |
2389 | abort (); | |
2390 | return s->sy_next; | |
2391 | } | |
2392 | ||
2393 | /* Return a pointer to the value of a symbol as an expression. */ | |
2394 | ||
2395 | expressionS * | |
74937d39 | 2396 | symbol_get_value_expression (symbolS *s) |
49309057 ILT |
2397 | { |
2398 | if (LOCAL_SYMBOL_CHECK (s)) | |
2399 | s = local_symbol_convert ((struct local_symbol *) s); | |
2400 | return &s->sy_value; | |
2401 | } | |
2402 | ||
2403 | /* Set the value of a symbol to an expression. */ | |
2404 | ||
2405 | void | |
74937d39 | 2406 | symbol_set_value_expression (symbolS *s, const expressionS *exp) |
49309057 ILT |
2407 | { |
2408 | if (LOCAL_SYMBOL_CHECK (s)) | |
2409 | s = local_symbol_convert ((struct local_symbol *) s); | |
2410 | s->sy_value = *exp; | |
06e77878 | 2411 | S_CLEAR_WEAKREFR (s); |
49309057 ILT |
2412 | } |
2413 | ||
087d837e L |
2414 | /* Return whether 2 symbols are the same. */ |
2415 | ||
2416 | int | |
2417 | symbol_same_p (symbolS *s1, symbolS *s2) | |
2418 | { | |
2419 | if (s1->bsym == NULL | |
2420 | && local_symbol_converted_p ((struct local_symbol *) s1)) | |
2421 | s1 = local_symbol_get_real_symbol ((struct local_symbol *) s1); | |
2422 | if (s2->bsym == NULL | |
2423 | && local_symbol_converted_p ((struct local_symbol *) s2)) | |
2424 | s2 = local_symbol_get_real_symbol ((struct local_symbol *) s2); | |
2425 | return s1 == s2; | |
2426 | } | |
2427 | ||
be95a9c1 AM |
2428 | /* Return a pointer to the X_add_number component of a symbol. */ |
2429 | ||
514d955d | 2430 | offsetT * |
be95a9c1 AM |
2431 | symbol_X_add_number (symbolS *s) |
2432 | { | |
be95a9c1 | 2433 | if (LOCAL_SYMBOL_CHECK (s)) |
514d955d | 2434 | return (offsetT *) &((struct local_symbol *) s)->lsy_value; |
be95a9c1 | 2435 | |
514d955d | 2436 | return &s->sy_value.X_add_number; |
be95a9c1 AM |
2437 | } |
2438 | ||
b7d6ed97 RH |
2439 | /* Set the value of SYM to the current position in the current segment. */ |
2440 | ||
2441 | void | |
74937d39 | 2442 | symbol_set_value_now (symbolS *sym) |
b7d6ed97 RH |
2443 | { |
2444 | S_SET_SEGMENT (sym, now_seg); | |
2445 | S_SET_VALUE (sym, frag_now_fix ()); | |
2446 | symbol_set_frag (sym, frag_now); | |
2447 | } | |
2448 | ||
49309057 ILT |
2449 | /* Set the frag of a symbol. */ |
2450 | ||
2451 | void | |
74937d39 | 2452 | symbol_set_frag (symbolS *s, fragS *f) |
49309057 ILT |
2453 | { |
2454 | if (LOCAL_SYMBOL_CHECK (s)) | |
2455 | { | |
2456 | local_symbol_set_frag ((struct local_symbol *) s, f); | |
2457 | return; | |
2458 | } | |
2459 | s->sy_frag = f; | |
06e77878 | 2460 | S_CLEAR_WEAKREFR (s); |
49309057 ILT |
2461 | } |
2462 | ||
2463 | /* Return the frag of a symbol. */ | |
2464 | ||
2465 | fragS * | |
74937d39 | 2466 | symbol_get_frag (symbolS *s) |
49309057 ILT |
2467 | { |
2468 | if (LOCAL_SYMBOL_CHECK (s)) | |
2469 | return local_symbol_get_frag ((struct local_symbol *) s); | |
2470 | return s->sy_frag; | |
2471 | } | |
2472 | ||
2473 | /* Mark a symbol as having been used. */ | |
2474 | ||
2475 | void | |
74937d39 | 2476 | symbol_mark_used (symbolS *s) |
49309057 ILT |
2477 | { |
2478 | if (LOCAL_SYMBOL_CHECK (s)) | |
2479 | return; | |
2480 | s->sy_used = 1; | |
06e77878 AO |
2481 | if (S_IS_WEAKREFR (s)) |
2482 | symbol_mark_used (s->sy_value.X_add_symbol); | |
49309057 ILT |
2483 | } |
2484 | ||
2485 | /* Clear the mark of whether a symbol has been used. */ | |
2486 | ||
2487 | void | |
74937d39 | 2488 | symbol_clear_used (symbolS *s) |
49309057 ILT |
2489 | { |
2490 | if (LOCAL_SYMBOL_CHECK (s)) | |
2491 | s = local_symbol_convert ((struct local_symbol *) s); | |
2492 | s->sy_used = 0; | |
2493 | } | |
2494 | ||
2495 | /* Return whether a symbol has been used. */ | |
2496 | ||
2497 | int | |
74937d39 | 2498 | symbol_used_p (symbolS *s) |
49309057 ILT |
2499 | { |
2500 | if (LOCAL_SYMBOL_CHECK (s)) | |
2501 | return 1; | |
2502 | return s->sy_used; | |
2503 | } | |
2504 | ||
2505 | /* Mark a symbol as having been used in a reloc. */ | |
2506 | ||
2507 | void | |
74937d39 | 2508 | symbol_mark_used_in_reloc (symbolS *s) |
49309057 ILT |
2509 | { |
2510 | if (LOCAL_SYMBOL_CHECK (s)) | |
2511 | s = local_symbol_convert ((struct local_symbol *) s); | |
2512 | s->sy_used_in_reloc = 1; | |
2513 | } | |
2514 | ||
2515 | /* Clear the mark of whether a symbol has been used in a reloc. */ | |
2516 | ||
2517 | void | |
74937d39 | 2518 | symbol_clear_used_in_reloc (symbolS *s) |
49309057 ILT |
2519 | { |
2520 | if (LOCAL_SYMBOL_CHECK (s)) | |
2521 | return; | |
2522 | s->sy_used_in_reloc = 0; | |
2523 | } | |
2524 | ||
2525 | /* Return whether a symbol has been used in a reloc. */ | |
2526 | ||
2527 | int | |
74937d39 | 2528 | symbol_used_in_reloc_p (symbolS *s) |
49309057 ILT |
2529 | { |
2530 | if (LOCAL_SYMBOL_CHECK (s)) | |
2531 | return 0; | |
2532 | return s->sy_used_in_reloc; | |
2533 | } | |
2534 | ||
2535 | /* Mark a symbol as an MRI common symbol. */ | |
2536 | ||
2537 | void | |
74937d39 | 2538 | symbol_mark_mri_common (symbolS *s) |
49309057 ILT |
2539 | { |
2540 | if (LOCAL_SYMBOL_CHECK (s)) | |
2541 | s = local_symbol_convert ((struct local_symbol *) s); | |
2542 | s->sy_mri_common = 1; | |
2543 | } | |
2544 | ||
2545 | /* Clear the mark of whether a symbol is an MRI common symbol. */ | |
2546 | ||
2547 | void | |
74937d39 | 2548 | symbol_clear_mri_common (symbolS *s) |
49309057 ILT |
2549 | { |
2550 | if (LOCAL_SYMBOL_CHECK (s)) | |
2551 | return; | |
2552 | s->sy_mri_common = 0; | |
2553 | } | |
2554 | ||
2555 | /* Return whether a symbol is an MRI common symbol. */ | |
2556 | ||
2557 | int | |
74937d39 | 2558 | symbol_mri_common_p (symbolS *s) |
49309057 ILT |
2559 | { |
2560 | if (LOCAL_SYMBOL_CHECK (s)) | |
2561 | return 0; | |
2562 | return s->sy_mri_common; | |
2563 | } | |
2564 | ||
2565 | /* Mark a symbol as having been written. */ | |
2566 | ||
2567 | void | |
74937d39 | 2568 | symbol_mark_written (symbolS *s) |
49309057 ILT |
2569 | { |
2570 | if (LOCAL_SYMBOL_CHECK (s)) | |
2571 | return; | |
2572 | s->written = 1; | |
2573 | } | |
2574 | ||
2575 | /* Clear the mark of whether a symbol has been written. */ | |
2576 | ||
2577 | void | |
74937d39 | 2578 | symbol_clear_written (symbolS *s) |
49309057 ILT |
2579 | { |
2580 | if (LOCAL_SYMBOL_CHECK (s)) | |
2581 | return; | |
2582 | s->written = 0; | |
2583 | } | |
2584 | ||
2585 | /* Return whether a symbol has been written. */ | |
2586 | ||
2587 | int | |
74937d39 | 2588 | symbol_written_p (symbolS *s) |
49309057 ILT |
2589 | { |
2590 | if (LOCAL_SYMBOL_CHECK (s)) | |
2591 | return 0; | |
2592 | return s->written; | |
2593 | } | |
2594 | ||
2595 | /* Mark a symbol has having been resolved. */ | |
2596 | ||
2597 | void | |
74937d39 | 2598 | symbol_mark_resolved (symbolS *s) |
49309057 ILT |
2599 | { |
2600 | if (LOCAL_SYMBOL_CHECK (s)) | |
2601 | { | |
2602 | local_symbol_mark_resolved ((struct local_symbol *) s); | |
2603 | return; | |
2604 | } | |
2605 | s->sy_resolved = 1; | |
2606 | } | |
2607 | ||
2608 | /* Return whether a symbol has been resolved. */ | |
2609 | ||
2610 | int | |
74937d39 | 2611 | symbol_resolved_p (symbolS *s) |
49309057 ILT |
2612 | { |
2613 | if (LOCAL_SYMBOL_CHECK (s)) | |
2614 | return local_symbol_resolved_p ((struct local_symbol *) s); | |
2615 | return s->sy_resolved; | |
2616 | } | |
2617 | ||
2618 | /* Return whether a symbol is a section symbol. */ | |
2619 | ||
2620 | int | |
74937d39 | 2621 | symbol_section_p (symbolS *s ATTRIBUTE_UNUSED) |
49309057 ILT |
2622 | { |
2623 | if (LOCAL_SYMBOL_CHECK (s)) | |
2624 | return 0; | |
49309057 | 2625 | return (s->bsym->flags & BSF_SECTION_SYM) != 0; |
49309057 ILT |
2626 | } |
2627 | ||
2628 | /* Return whether a symbol is equated to another symbol. */ | |
2629 | ||
2630 | int | |
74937d39 | 2631 | symbol_equated_p (symbolS *s) |
49309057 ILT |
2632 | { |
2633 | if (LOCAL_SYMBOL_CHECK (s)) | |
2634 | return 0; | |
2635 | return s->sy_value.X_op == O_symbol; | |
2636 | } | |
2637 | ||
e0890092 AM |
2638 | /* Return whether a symbol is equated to another symbol, and should be |
2639 | treated specially when writing out relocs. */ | |
2640 | ||
2641 | int | |
74937d39 | 2642 | symbol_equated_reloc_p (symbolS *s) |
e0890092 AM |
2643 | { |
2644 | if (LOCAL_SYMBOL_CHECK (s)) | |
2645 | return 0; | |
2646 | /* X_op_symbol, normally not used for O_symbol, is set by | |
2647 | resolve_symbol_value to flag expression syms that have been | |
2648 | equated. */ | |
2649 | return (s->sy_value.X_op == O_symbol | |
7be1c489 | 2650 | #if defined (OBJ_COFF) && defined (TE_PE) |
977cdf5a NC |
2651 | && ! S_IS_WEAK (s) |
2652 | #endif | |
e0890092 AM |
2653 | && ((s->sy_resolved && s->sy_value.X_op_symbol != NULL) |
2654 | || ! S_IS_DEFINED (s) | |
2655 | || S_IS_COMMON (s))); | |
2656 | } | |
2657 | ||
49309057 ILT |
2658 | /* Return whether a symbol has a constant value. */ |
2659 | ||
2660 | int | |
74937d39 | 2661 | symbol_constant_p (symbolS *s) |
49309057 ILT |
2662 | { |
2663 | if (LOCAL_SYMBOL_CHECK (s)) | |
2664 | return 1; | |
2665 | return s->sy_value.X_op == O_constant; | |
2666 | } | |
2667 | ||
bdf128d6 JB |
2668 | /* Return whether a symbol was cloned and thus removed from the global |
2669 | symbol list. */ | |
2670 | ||
2671 | int | |
2672 | symbol_shadow_p (symbolS *s) | |
2673 | { | |
2674 | if (LOCAL_SYMBOL_CHECK (s)) | |
2675 | return 0; | |
2676 | return s->sy_next == s; | |
2677 | } | |
2678 | ||
49309057 ILT |
2679 | /* Return the BFD symbol for a symbol. */ |
2680 | ||
2681 | asymbol * | |
74937d39 | 2682 | symbol_get_bfdsym (symbolS *s) |
49309057 ILT |
2683 | { |
2684 | if (LOCAL_SYMBOL_CHECK (s)) | |
2685 | s = local_symbol_convert ((struct local_symbol *) s); | |
2686 | return s->bsym; | |
2687 | } | |
2688 | ||
2689 | /* Set the BFD symbol for a symbol. */ | |
2690 | ||
2691 | void | |
74937d39 | 2692 | symbol_set_bfdsym (symbolS *s, asymbol *bsym) |
49309057 ILT |
2693 | { |
2694 | if (LOCAL_SYMBOL_CHECK (s)) | |
2695 | s = local_symbol_convert ((struct local_symbol *) s); | |
22fe14ad NC |
2696 | /* Usually, it is harmless to reset a symbol to a BFD section |
2697 | symbol. For example, obj_elf_change_section sets the BFD symbol | |
2698 | of an old symbol with the newly created section symbol. But when | |
2699 | we have multiple sections with the same name, the newly created | |
2700 | section may have the same name as an old section. We check if the | |
2701 | old symbol has been already marked as a section symbol before | |
2702 | resetting it. */ | |
2703 | if ((s->bsym->flags & BSF_SECTION_SYM) == 0) | |
2704 | s->bsym = bsym; | |
2705 | /* else XXX - What do we do now ? */ | |
49309057 ILT |
2706 | } |
2707 | ||
49309057 ILT |
2708 | #ifdef OBJ_SYMFIELD_TYPE |
2709 | ||
2710 | /* Get a pointer to the object format information for a symbol. */ | |
2711 | ||
2712 | OBJ_SYMFIELD_TYPE * | |
74937d39 | 2713 | symbol_get_obj (symbolS *s) |
49309057 ILT |
2714 | { |
2715 | if (LOCAL_SYMBOL_CHECK (s)) | |
2716 | s = local_symbol_convert ((struct local_symbol *) s); | |
2717 | return &s->sy_obj; | |
2718 | } | |
2719 | ||
2720 | /* Set the object format information for a symbol. */ | |
2721 | ||
2722 | void | |
74937d39 | 2723 | symbol_set_obj (symbolS *s, OBJ_SYMFIELD_TYPE *o) |
49309057 ILT |
2724 | { |
2725 | if (LOCAL_SYMBOL_CHECK (s)) | |
2726 | s = local_symbol_convert ((struct local_symbol *) s); | |
2727 | s->sy_obj = *o; | |
2728 | } | |
2729 | ||
2730 | #endif /* OBJ_SYMFIELD_TYPE */ | |
2731 | ||
2732 | #ifdef TC_SYMFIELD_TYPE | |
2733 | ||
2734 | /* Get a pointer to the processor information for a symbol. */ | |
2735 | ||
2736 | TC_SYMFIELD_TYPE * | |
74937d39 | 2737 | symbol_get_tc (symbolS *s) |
49309057 ILT |
2738 | { |
2739 | if (LOCAL_SYMBOL_CHECK (s)) | |
2740 | s = local_symbol_convert ((struct local_symbol *) s); | |
2741 | return &s->sy_tc; | |
2742 | } | |
2743 | ||
2744 | /* Set the processor information for a symbol. */ | |
2745 | ||
2746 | void | |
74937d39 | 2747 | symbol_set_tc (symbolS *s, TC_SYMFIELD_TYPE *o) |
49309057 ILT |
2748 | { |
2749 | if (LOCAL_SYMBOL_CHECK (s)) | |
2750 | s = local_symbol_convert ((struct local_symbol *) s); | |
2751 | s->sy_tc = *o; | |
2752 | } | |
2753 | ||
2754 | #endif /* TC_SYMFIELD_TYPE */ | |
2755 | ||
252b5132 | 2756 | void |
74937d39 | 2757 | symbol_begin (void) |
252b5132 RH |
2758 | { |
2759 | symbol_lastP = NULL; | |
7c743825 | 2760 | symbol_rootP = NULL; /* In case we have 0 symbols (!!) */ |
252b5132 | 2761 | sy_hash = hash_new (); |
49309057 | 2762 | local_hash = hash_new (); |
252b5132 RH |
2763 | |
2764 | memset ((char *) (&abs_symbol), '\0', sizeof (abs_symbol)); | |
252b5132 RH |
2765 | #if defined (EMIT_SECTION_SYMBOLS) || !defined (RELOC_REQUIRES_SYMBOL) |
2766 | abs_symbol.bsym = bfd_abs_section.symbol; | |
252b5132 RH |
2767 | #endif |
2768 | abs_symbol.sy_value.X_op = O_constant; | |
2769 | abs_symbol.sy_frag = &zero_address_frag; | |
2770 | ||
2771 | if (LOCAL_LABELS_FB) | |
2772 | fb_label_init (); | |
2773 | } | |
4a826962 MR |
2774 | |
2775 | void | |
2776 | dot_symbol_init (void) | |
2777 | { | |
2778 | dot_symbol.bsym = bfd_make_empty_symbol (stdoutput); | |
2779 | if (dot_symbol.bsym == NULL) | |
2780 | as_fatal ("bfd_make_empty_symbol: %s", bfd_errmsg (bfd_get_error ())); | |
2781 | dot_symbol.bsym->name = "."; | |
2782 | dot_symbol.sy_forward_ref = 1; | |
2783 | dot_symbol.sy_value.X_op = O_constant; | |
2784 | } | |
252b5132 RH |
2785 | \f |
2786 | int indent_level; | |
2787 | ||
2788 | /* Maximum indent level. | |
2789 | Available for modification inside a gdb session. */ | |
87c245cc | 2790 | static int max_indent_level = 8; |
252b5132 | 2791 | |
252b5132 | 2792 | void |
74937d39 | 2793 | print_symbol_value_1 (FILE *file, symbolS *sym) |
252b5132 RH |
2794 | { |
2795 | const char *name = S_GET_NAME (sym); | |
2796 | if (!name || !name[0]) | |
2797 | name = "(unnamed)"; | |
d2df793a NC |
2798 | fprintf (file, "sym "); |
2799 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) sym)); | |
2800 | fprintf (file, " %s", name); | |
49309057 ILT |
2801 | |
2802 | if (LOCAL_SYMBOL_CHECK (sym)) | |
2803 | { | |
2804 | struct local_symbol *locsym = (struct local_symbol *) sym; | |
d2df793a NC |
2805 | |
2806 | if (local_symbol_get_frag (locsym) != & zero_address_frag | |
49309057 | 2807 | && local_symbol_get_frag (locsym) != NULL) |
d2df793a NC |
2808 | { |
2809 | fprintf (file, " frag "); | |
2810 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) local_symbol_get_frag (locsym))); | |
2811 | } | |
49309057 ILT |
2812 | if (local_symbol_resolved_p (locsym)) |
2813 | fprintf (file, " resolved"); | |
2814 | fprintf (file, " local"); | |
2815 | } | |
2816 | else | |
2817 | { | |
2818 | if (sym->sy_frag != &zero_address_frag) | |
d2df793a NC |
2819 | { |
2820 | fprintf (file, " frag "); | |
2821 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) sym->sy_frag)); | |
2822 | } | |
49309057 ILT |
2823 | if (sym->written) |
2824 | fprintf (file, " written"); | |
2825 | if (sym->sy_resolved) | |
2826 | fprintf (file, " resolved"); | |
2827 | else if (sym->sy_resolving) | |
2828 | fprintf (file, " resolving"); | |
2829 | if (sym->sy_used_in_reloc) | |
2830 | fprintf (file, " used-in-reloc"); | |
2831 | if (sym->sy_used) | |
2832 | fprintf (file, " used"); | |
2833 | if (S_IS_LOCAL (sym)) | |
2834 | fprintf (file, " local"); | |
e97b3f28 | 2835 | if (S_IS_EXTERNAL (sym)) |
49309057 | 2836 | fprintf (file, " extern"); |
06e77878 AO |
2837 | if (S_IS_WEAK (sym)) |
2838 | fprintf (file, " weak"); | |
49309057 ILT |
2839 | if (S_IS_DEBUG (sym)) |
2840 | fprintf (file, " debug"); | |
2841 | if (S_IS_DEFINED (sym)) | |
2842 | fprintf (file, " defined"); | |
2843 | } | |
06e77878 AO |
2844 | if (S_IS_WEAKREFR (sym)) |
2845 | fprintf (file, " weakrefr"); | |
2846 | if (S_IS_WEAKREFD (sym)) | |
2847 | fprintf (file, " weakrefd"); | |
252b5132 | 2848 | fprintf (file, " %s", segment_name (S_GET_SEGMENT (sym))); |
49309057 | 2849 | if (symbol_resolved_p (sym)) |
252b5132 RH |
2850 | { |
2851 | segT s = S_GET_SEGMENT (sym); | |
2852 | ||
2853 | if (s != undefined_section | |
411863a4 | 2854 | && s != expr_section) |
0af1713e | 2855 | fprintf (file, " %lx", (unsigned long) S_GET_VALUE (sym)); |
252b5132 RH |
2856 | } |
2857 | else if (indent_level < max_indent_level | |
2858 | && S_GET_SEGMENT (sym) != undefined_section) | |
2859 | { | |
2860 | indent_level++; | |
2861 | fprintf (file, "\n%*s<", indent_level * 4, ""); | |
49309057 ILT |
2862 | if (LOCAL_SYMBOL_CHECK (sym)) |
2863 | fprintf (file, "constant %lx", | |
0af1713e | 2864 | (unsigned long) ((struct local_symbol *) sym)->lsy_value); |
49309057 ILT |
2865 | else |
2866 | print_expr_1 (file, &sym->sy_value); | |
252b5132 RH |
2867 | fprintf (file, ">"); |
2868 | indent_level--; | |
2869 | } | |
2870 | fflush (file); | |
2871 | } | |
2872 | ||
2873 | void | |
74937d39 | 2874 | print_symbol_value (symbolS *sym) |
252b5132 RH |
2875 | { |
2876 | indent_level = 0; | |
2877 | print_symbol_value_1 (stderr, sym); | |
2878 | fprintf (stderr, "\n"); | |
2879 | } | |
2880 | ||
2881 | static void | |
74937d39 | 2882 | print_binary (FILE *file, const char *name, expressionS *exp) |
252b5132 RH |
2883 | { |
2884 | indent_level++; | |
2885 | fprintf (file, "%s\n%*s<", name, indent_level * 4, ""); | |
2886 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2887 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2888 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2889 | fprintf (file, ">"); | |
2890 | indent_level--; | |
2891 | } | |
2892 | ||
2893 | void | |
74937d39 | 2894 | print_expr_1 (FILE *file, expressionS *exp) |
252b5132 | 2895 | { |
d2df793a NC |
2896 | fprintf (file, "expr "); |
2897 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) exp)); | |
2898 | fprintf (file, " "); | |
252b5132 RH |
2899 | switch (exp->X_op) |
2900 | { | |
2901 | case O_illegal: | |
2902 | fprintf (file, "illegal"); | |
2903 | break; | |
2904 | case O_absent: | |
2905 | fprintf (file, "absent"); | |
2906 | break; | |
2907 | case O_constant: | |
0af1713e | 2908 | fprintf (file, "constant %lx", (unsigned long) exp->X_add_number); |
252b5132 RH |
2909 | break; |
2910 | case O_symbol: | |
2911 | indent_level++; | |
2912 | fprintf (file, "symbol\n%*s<", indent_level * 4, ""); | |
2913 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2914 | fprintf (file, ">"); | |
2915 | maybe_print_addnum: | |
2916 | if (exp->X_add_number) | |
2917 | fprintf (file, "\n%*s%lx", indent_level * 4, "", | |
0af1713e | 2918 | (unsigned long) exp->X_add_number); |
252b5132 RH |
2919 | indent_level--; |
2920 | break; | |
2921 | case O_register: | |
2922 | fprintf (file, "register #%d", (int) exp->X_add_number); | |
2923 | break; | |
2924 | case O_big: | |
2925 | fprintf (file, "big"); | |
2926 | break; | |
2927 | case O_uminus: | |
2928 | fprintf (file, "uminus -<"); | |
2929 | indent_level++; | |
2930 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2931 | fprintf (file, ">"); | |
2932 | goto maybe_print_addnum; | |
2933 | case O_bit_not: | |
2934 | fprintf (file, "bit_not"); | |
2935 | break; | |
2936 | case O_multiply: | |
2937 | print_binary (file, "multiply", exp); | |
2938 | break; | |
2939 | case O_divide: | |
2940 | print_binary (file, "divide", exp); | |
2941 | break; | |
2942 | case O_modulus: | |
2943 | print_binary (file, "modulus", exp); | |
2944 | break; | |
2945 | case O_left_shift: | |
2946 | print_binary (file, "lshift", exp); | |
2947 | break; | |
2948 | case O_right_shift: | |
2949 | print_binary (file, "rshift", exp); | |
2950 | break; | |
2951 | case O_bit_inclusive_or: | |
2952 | print_binary (file, "bit_ior", exp); | |
2953 | break; | |
2954 | case O_bit_exclusive_or: | |
2955 | print_binary (file, "bit_xor", exp); | |
2956 | break; | |
2957 | case O_bit_and: | |
2958 | print_binary (file, "bit_and", exp); | |
2959 | break; | |
2960 | case O_eq: | |
2961 | print_binary (file, "eq", exp); | |
2962 | break; | |
2963 | case O_ne: | |
2964 | print_binary (file, "ne", exp); | |
2965 | break; | |
2966 | case O_lt: | |
2967 | print_binary (file, "lt", exp); | |
2968 | break; | |
2969 | case O_le: | |
2970 | print_binary (file, "le", exp); | |
2971 | break; | |
2972 | case O_ge: | |
2973 | print_binary (file, "ge", exp); | |
2974 | break; | |
2975 | case O_gt: | |
2976 | print_binary (file, "gt", exp); | |
2977 | break; | |
2978 | case O_logical_and: | |
2979 | print_binary (file, "logical_and", exp); | |
2980 | break; | |
2981 | case O_logical_or: | |
2982 | print_binary (file, "logical_or", exp); | |
2983 | break; | |
2984 | case O_add: | |
2985 | indent_level++; | |
2986 | fprintf (file, "add\n%*s<", indent_level * 4, ""); | |
2987 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2988 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2989 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2990 | fprintf (file, ">"); | |
2991 | goto maybe_print_addnum; | |
2992 | case O_subtract: | |
2993 | indent_level++; | |
2994 | fprintf (file, "subtract\n%*s<", indent_level * 4, ""); | |
2995 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2996 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2997 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2998 | fprintf (file, ">"); | |
2999 | goto maybe_print_addnum; | |
3000 | default: | |
3001 | fprintf (file, "{unknown opcode %d}", (int) exp->X_op); | |
3002 | break; | |
3003 | } | |
3004 | fflush (stdout); | |
3005 | } | |
3006 | ||
3007 | void | |
74937d39 | 3008 | print_expr (expressionS *exp) |
252b5132 RH |
3009 | { |
3010 | print_expr_1 (stderr, exp); | |
3011 | fprintf (stderr, "\n"); | |
3012 | } | |
3013 | ||
3014 | void | |
74937d39 | 3015 | symbol_print_statistics (FILE *file) |
252b5132 RH |
3016 | { |
3017 | hash_print_statistics (file, "symbol table", sy_hash); | |
49309057 ILT |
3018 | hash_print_statistics (file, "mini local symbol table", local_hash); |
3019 | fprintf (file, "%lu mini local symbols created, %lu converted\n", | |
3020 | local_symbol_count, local_symbol_conversion_count); | |
252b5132 | 3021 | } |
280d71bf DB |
3022 | |
3023 | #ifdef OBJ_COMPLEX_RELC | |
3024 | ||
3025 | /* Convert given symbol to a new complex-relocation symbol name. This | |
6f12865c | 3026 | may be a recursive function, since it might be called for non-leaf |
280d71bf | 3027 | nodes (plain symbols) in the expression tree. The caller owns the |
6f12865c AM |
3028 | returning string, so should free it eventually. Errors are |
3029 | indicated via as_bad and a NULL return value. The given symbol | |
280d71bf DB |
3030 | is marked with sy_used_in_reloc. */ |
3031 | ||
3032 | char * | |
3033 | symbol_relc_make_sym (symbolS * sym) | |
3034 | { | |
3035 | char * terminal = NULL; | |
3036 | const char * sname; | |
3037 | char typetag; | |
3038 | int sname_len; | |
3039 | ||
9c2799c2 | 3040 | gas_assert (sym != NULL); |
280d71bf DB |
3041 | |
3042 | /* Recurse to symbol_relc_make_expr if this symbol | |
3043 | is defined as an expression or a plain value. */ | |
3044 | if ( S_GET_SEGMENT (sym) == expr_section | |
3045 | || S_GET_SEGMENT (sym) == absolute_section) | |
3046 | return symbol_relc_make_expr (& sym->sy_value); | |
3047 | ||
3048 | /* This may be a "fake symbol" L0\001, referring to ".". | |
3049 | Write out a special null symbol to refer to this position. */ | |
3050 | if (! strcmp (S_GET_NAME (sym), FAKE_LABEL_NAME)) | |
3051 | return xstrdup ("."); | |
3052 | ||
3053 | /* We hope this is a plain leaf symbol. Construct the encoding | |
3054 | as {S,s}II...:CCCCCCC.... | |
3055 | where 'S'/'s' means section symbol / plain symbol | |
3056 | III is decimal for the symbol name length | |
3057 | CCC is the symbol name itself. */ | |
3058 | symbol_mark_used_in_reloc (sym); | |
3059 | ||
3060 | sname = S_GET_NAME (sym); | |
3061 | sname_len = strlen (sname); | |
3062 | typetag = symbol_section_p (sym) ? 'S' : 's'; | |
3063 | ||
3064 | terminal = xmalloc (1 /* S or s */ | |
3065 | + 8 /* sname_len in decimal */ | |
3066 | + 1 /* _ spacer */ | |
3067 | + sname_len /* name itself */ | |
3068 | + 1 /* \0 */ ); | |
3069 | ||
3070 | sprintf (terminal, "%c%d:%s", typetag, sname_len, sname); | |
3071 | return terminal; | |
3072 | } | |
3073 | ||
3074 | /* Convert given value to a new complex-relocation symbol name. This | |
3075 | is a non-recursive function, since it is be called for leaf nodes | |
3076 | (plain values) in the expression tree. The caller owns the | |
3077 | returning string, so should free() it eventually. No errors. */ | |
3078 | ||
3079 | char * | |
3080 | symbol_relc_make_value (offsetT val) | |
3081 | { | |
3082 | char * terminal = xmalloc (28); /* Enough for long long. */ | |
3083 | ||
3084 | terminal[0] = '#'; | |
1a412f5f | 3085 | bfd_sprintf_vma (stdoutput, terminal + 1, val); |
280d71bf DB |
3086 | return terminal; |
3087 | } | |
3088 | ||
3089 | /* Convert given expression to a new complex-relocation symbol name. | |
3090 | This is a recursive function, since it traverses the entire given | |
3091 | expression tree. The caller owns the returning string, so should | |
3092 | free() it eventually. Errors are indicated via as_bad() and a NULL | |
3093 | return value. */ | |
3094 | ||
3095 | char * | |
3096 | symbol_relc_make_expr (expressionS * exp) | |
3097 | { | |
3098 | char * opstr = NULL; /* Operator prefix string. */ | |
3099 | int arity = 0; /* Arity of this operator. */ | |
3100 | char * operands[3]; /* Up to three operands. */ | |
3101 | char * concat_string = NULL; | |
3102 | ||
3103 | operands[0] = operands[1] = operands[2] = NULL; | |
3104 | ||
9c2799c2 | 3105 | gas_assert (exp != NULL); |
280d71bf DB |
3106 | |
3107 | /* Match known operators -> fill in opstr, arity, operands[] and fall | |
3108 | through to construct subexpression fragments; may instead return | |
3109 | string directly for leaf nodes. */ | |
3110 | ||
3111 | /* See expr.h for the meaning of all these enums. Many operators | |
3112 | have an unnatural arity (X_add_number implicitly added). The | |
3113 | conversion logic expands them to explicit "+" subexpressions. */ | |
3114 | ||
3115 | switch (exp->X_op) | |
3116 | { | |
3117 | default: | |
3118 | as_bad ("Unknown expression operator (enum %d)", exp->X_op); | |
3119 | break; | |
3120 | ||
3121 | /* Leaf nodes. */ | |
3122 | case O_constant: | |
3123 | return symbol_relc_make_value (exp->X_add_number); | |
3124 | ||
3125 | case O_symbol: | |
3126 | if (exp->X_add_number) | |
3127 | { | |
3128 | arity = 2; | |
3129 | opstr = "+"; | |
3130 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); | |
3131 | operands[1] = symbol_relc_make_value (exp->X_add_number); | |
3132 | break; | |
3133 | } | |
3134 | else | |
3135 | return symbol_relc_make_sym (exp->X_add_symbol); | |
3136 | ||
3137 | /* Helper macros for nesting nodes. */ | |
3138 | ||
3139 | #define HANDLE_XADD_OPT1(str_) \ | |
3140 | if (exp->X_add_number) \ | |
3141 | { \ | |
3142 | arity = 2; \ | |
3143 | opstr = "+:" str_; \ | |
3144 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3145 | operands[1] = symbol_relc_make_value (exp->X_add_number); \ | |
3146 | break; \ | |
3147 | } \ | |
3148 | else \ | |
3149 | { \ | |
3150 | arity = 1; \ | |
3151 | opstr = str_; \ | |
3152 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3153 | } \ | |
3154 | break | |
3155 | ||
3156 | #define HANDLE_XADD_OPT2(str_) \ | |
3157 | if (exp->X_add_number) \ | |
3158 | { \ | |
3159 | arity = 3; \ | |
3160 | opstr = "+:" str_; \ | |
3161 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3162 | operands[1] = symbol_relc_make_sym (exp->X_op_symbol); \ | |
3163 | operands[2] = symbol_relc_make_value (exp->X_add_number); \ | |
3164 | } \ | |
3165 | else \ | |
3166 | { \ | |
3167 | arity = 2; \ | |
3168 | opstr = str_; \ | |
3169 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3170 | operands[1] = symbol_relc_make_sym (exp->X_op_symbol); \ | |
3171 | } \ | |
3172 | break | |
3173 | ||
3174 | /* Nesting nodes. */ | |
3175 | ||
3176 | case O_uminus: HANDLE_XADD_OPT1 ("0-"); | |
3177 | case O_bit_not: HANDLE_XADD_OPT1 ("~"); | |
3178 | case O_logical_not: HANDLE_XADD_OPT1 ("!"); | |
3179 | case O_multiply: HANDLE_XADD_OPT2 ("*"); | |
3180 | case O_divide: HANDLE_XADD_OPT2 ("/"); | |
3181 | case O_modulus: HANDLE_XADD_OPT2 ("%"); | |
3182 | case O_left_shift: HANDLE_XADD_OPT2 ("<<"); | |
3183 | case O_right_shift: HANDLE_XADD_OPT2 (">>"); | |
3184 | case O_bit_inclusive_or: HANDLE_XADD_OPT2 ("|"); | |
3185 | case O_bit_exclusive_or: HANDLE_XADD_OPT2 ("^"); | |
3186 | case O_bit_and: HANDLE_XADD_OPT2 ("&"); | |
3187 | case O_add: HANDLE_XADD_OPT2 ("+"); | |
3188 | case O_subtract: HANDLE_XADD_OPT2 ("-"); | |
3189 | case O_eq: HANDLE_XADD_OPT2 ("=="); | |
3190 | case O_ne: HANDLE_XADD_OPT2 ("!="); | |
3191 | case O_lt: HANDLE_XADD_OPT2 ("<"); | |
3192 | case O_le: HANDLE_XADD_OPT2 ("<="); | |
3193 | case O_ge: HANDLE_XADD_OPT2 (">="); | |
3194 | case O_gt: HANDLE_XADD_OPT2 (">"); | |
3195 | case O_logical_and: HANDLE_XADD_OPT2 ("&&"); | |
3196 | case O_logical_or: HANDLE_XADD_OPT2 ("||"); | |
3197 | } | |
3198 | ||
3199 | /* Validate & reject early. */ | |
3200 | if (arity >= 1 && ((operands[0] == NULL) || (strlen (operands[0]) == 0))) | |
3201 | opstr = NULL; | |
3202 | if (arity >= 2 && ((operands[1] == NULL) || (strlen (operands[1]) == 0))) | |
3203 | opstr = NULL; | |
3204 | if (arity >= 3 && ((operands[2] == NULL) || (strlen (operands[2]) == 0))) | |
3205 | opstr = NULL; | |
3206 | ||
3207 | if (opstr == NULL) | |
3208 | concat_string = NULL; | |
3209 | else | |
3210 | { | |
3211 | /* Allocate new string; include inter-operand padding gaps etc. */ | |
3212 | concat_string = xmalloc (strlen (opstr) | |
3213 | + 1 | |
3214 | + (arity >= 1 ? (strlen (operands[0]) + 1 ) : 0) | |
3215 | + (arity >= 2 ? (strlen (operands[1]) + 1 ) : 0) | |
3216 | + (arity >= 3 ? (strlen (operands[2]) + 0 ) : 0) | |
3217 | + 1); | |
9c2799c2 | 3218 | gas_assert (concat_string != NULL); |
280d71bf DB |
3219 | |
3220 | /* Format the thing. */ | |
3221 | sprintf (concat_string, | |
3222 | (arity == 0 ? "%s" : | |
3223 | arity == 1 ? "%s:%s" : | |
3224 | arity == 2 ? "%s:%s:%s" : | |
3225 | /* arity == 3 */ "%s:%s:%s:%s"), | |
3226 | opstr, operands[0], operands[1], operands[2]); | |
3227 | } | |
3228 | ||
3229 | /* Free operand strings (not opstr). */ | |
3230 | if (arity >= 1) xfree (operands[0]); | |
3231 | if (arity >= 2) xfree (operands[1]); | |
3232 | if (arity >= 3) xfree (operands[2]); | |
3233 | ||
3234 | return concat_string; | |
3235 | } | |
3236 | ||
3237 | #endif |