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 | 25 | #include "as.h" |
3882b010 | 26 | #include "safe-ctype.h" |
252b5132 RH |
27 | #include "obstack.h" /* For "symbols.h" */ |
28 | #include "subsegs.h" | |
49309057 ILT |
29 | #include "struc-symbol.h" |
30 | ||
252b5132 RH |
31 | /* This is non-zero if symbols are case sensitive, which is the |
32 | default. */ | |
33 | int symbols_case_sensitive = 1; | |
34 | ||
35 | #ifndef WORKING_DOT_WORD | |
36 | extern int new_broken_words; | |
37 | #endif | |
38 | ||
39 | /* symbol-name => struct symbol pointer */ | |
40 | static struct hash_control *sy_hash; | |
41 | ||
49309057 ILT |
42 | /* Table of local symbols. */ |
43 | static struct hash_control *local_hash; | |
44 | ||
7c743825 | 45 | /* Below are commented in "symbols.h". */ |
252b5132 RH |
46 | symbolS *symbol_rootP; |
47 | symbolS *symbol_lastP; | |
48 | symbolS abs_symbol; | |
4a826962 | 49 | symbolS dot_symbol; |
252b5132 RH |
50 | |
51 | #ifdef DEBUG_SYMS | |
52 | #define debug_verify_symchain verify_symbol_chain | |
53 | #else | |
54 | #define debug_verify_symchain(root, last) ((void) 0) | |
55 | #endif | |
56 | ||
aa257fcd NC |
57 | #define DOLLAR_LABEL_CHAR '\001' |
58 | #define LOCAL_LABEL_CHAR '\002' | |
59 | ||
df58fc94 RS |
60 | #ifndef TC_LABEL_IS_LOCAL |
61 | #define TC_LABEL_IS_LOCAL(name) 0 | |
62 | #endif | |
63 | ||
252b5132 | 64 | struct obstack notes; |
22ba0981 | 65 | #ifdef TE_PE |
977cdf5a NC |
66 | /* The name of an external symbol which is |
67 | used to make weak PE symbol names unique. */ | |
68 | const char * an_external_name; | |
69 | #endif | |
252b5132 | 70 | |
74937d39 KH |
71 | static char *save_symbol_name (const char *); |
72 | static void fb_label_init (void); | |
73 | static long dollar_label_instance (long); | |
74 | static long fb_label_instance (long); | |
252b5132 | 75 | |
74937d39 | 76 | static void print_binary (FILE *, const char *, expressionS *); |
252b5132 | 77 | |
7c743825 | 78 | /* Return a pointer to a new symbol. Die if we can't make a new |
252b5132 RH |
79 | symbol. Fill in the symbol's values. Add symbol to end of symbol |
80 | chain. | |
7c743825 | 81 | |
252b5132 RH |
82 | This function should be called in the general case of creating a |
83 | symbol. However, if the output file symbol table has already been | |
84 | set, and you are certain that this symbol won't be wanted in the | |
85 | output file, you can call symbol_create. */ | |
86 | ||
87 | symbolS * | |
74937d39 | 88 | symbol_new (const char *name, segT segment, valueT valu, fragS *frag) |
252b5132 RH |
89 | { |
90 | symbolS *symbolP = symbol_create (name, segment, valu, frag); | |
91 | ||
7c743825 | 92 | /* Link to end of symbol chain. */ |
252b5132 RH |
93 | { |
94 | extern int symbol_table_frozen; | |
95 | if (symbol_table_frozen) | |
96 | abort (); | |
97 | } | |
252b5132 RH |
98 | symbol_append (symbolP, symbol_lastP, &symbol_rootP, &symbol_lastP); |
99 | ||
100 | return symbolP; | |
101 | } | |
102 | ||
49309057 ILT |
103 | /* Save a symbol name on a permanent obstack, and convert it according |
104 | to the object file format. */ | |
105 | ||
106 | static char * | |
74937d39 | 107 | save_symbol_name (const char *name) |
252b5132 RH |
108 | { |
109 | unsigned int name_length; | |
49309057 | 110 | char *ret; |
252b5132 | 111 | |
7c743825 | 112 | name_length = strlen (name) + 1; /* +1 for \0. */ |
252b5132 | 113 | obstack_grow (¬es, name, name_length); |
1e9cc1c2 | 114 | ret = (char *) obstack_finish (¬es); |
49309057 | 115 | |
252b5132 | 116 | #ifdef tc_canonicalize_symbol_name |
49309057 | 117 | ret = tc_canonicalize_symbol_name (ret); |
252b5132 RH |
118 | #endif |
119 | ||
120 | if (! symbols_case_sensitive) | |
121 | { | |
3882b010 | 122 | char *s; |
252b5132 | 123 | |
3882b010 L |
124 | for (s = ret; *s != '\0'; s++) |
125 | *s = TOUPPER (*s); | |
252b5132 RH |
126 | } |
127 | ||
49309057 ILT |
128 | return ret; |
129 | } | |
130 | ||
131 | symbolS * | |
74937d39 KH |
132 | symbol_create (const char *name, /* It is copied, the caller can destroy/modify. */ |
133 | segT segment, /* Segment identifier (SEG_<something>). */ | |
134 | valueT valu, /* Symbol value. */ | |
135 | fragS *frag /* Associated fragment. */) | |
49309057 ILT |
136 | { |
137 | char *preserved_copy_of_name; | |
138 | symbolS *symbolP; | |
139 | ||
140 | preserved_copy_of_name = save_symbol_name (name); | |
141 | ||
1e9cc1c2 | 142 | symbolP = (symbolS *) obstack_alloc (¬es, sizeof (symbolS)); |
252b5132 | 143 | |
7c743825 | 144 | /* symbol must be born in some fixed state. This seems as good as any. */ |
252b5132 RH |
145 | memset (symbolP, 0, sizeof (symbolS)); |
146 | ||
252b5132 RH |
147 | symbolP->bsym = bfd_make_empty_symbol (stdoutput); |
148 | if (symbolP->bsym == NULL) | |
885afe7b | 149 | as_fatal ("bfd_make_empty_symbol: %s", bfd_errmsg (bfd_get_error ())); |
252b5132 RH |
150 | S_SET_NAME (symbolP, preserved_copy_of_name); |
151 | ||
152 | S_SET_SEGMENT (symbolP, segment); | |
153 | S_SET_VALUE (symbolP, valu); | |
154 | symbol_clear_list_pointers (symbolP); | |
155 | ||
156 | symbolP->sy_frag = frag; | |
252b5132 RH |
157 | |
158 | obj_symbol_new_hook (symbolP); | |
159 | ||
160 | #ifdef tc_symbol_new_hook | |
161 | tc_symbol_new_hook (symbolP); | |
162 | #endif | |
163 | ||
164 | return symbolP; | |
165 | } | |
166 | \f | |
49309057 ILT |
167 | |
168 | /* Local symbol support. If we can get away with it, we keep only a | |
169 | small amount of information for local symbols. */ | |
170 | ||
74937d39 | 171 | static symbolS *local_symbol_convert (struct local_symbol *); |
49309057 ILT |
172 | |
173 | /* Used for statistics. */ | |
174 | ||
175 | static unsigned long local_symbol_count; | |
176 | static unsigned long local_symbol_conversion_count; | |
177 | ||
178 | /* This macro is called with a symbol argument passed by reference. | |
179 | It returns whether this is a local symbol. If necessary, it | |
180 | changes its argument to the real symbol. */ | |
181 | ||
182 | #define LOCAL_SYMBOL_CHECK(s) \ | |
158184ac | 183 | (s->sy_flags.sy_local_symbol \ |
49309057 ILT |
184 | ? (local_symbol_converted_p ((struct local_symbol *) s) \ |
185 | ? (s = local_symbol_get_real_symbol ((struct local_symbol *) s), \ | |
186 | 0) \ | |
187 | : 1) \ | |
188 | : 0) | |
189 | ||
190 | /* Create a local symbol and insert it into the local hash table. */ | |
191 | ||
00ce9deb | 192 | struct local_symbol * |
91d6fa6a | 193 | local_symbol_make (const char *name, segT section, valueT val, fragS *frag) |
49309057 ILT |
194 | { |
195 | char *name_copy; | |
196 | struct local_symbol *ret; | |
197 | ||
198 | ++local_symbol_count; | |
199 | ||
200 | name_copy = save_symbol_name (name); | |
201 | ||
1e9cc1c2 | 202 | ret = (struct local_symbol *) obstack_alloc (¬es, sizeof *ret); |
158184ac TG |
203 | ret->lsy_flags.sy_local_symbol = 1; |
204 | ret->lsy_flags.sy_resolved = 0; | |
49309057 ILT |
205 | ret->lsy_name = name_copy; |
206 | ret->lsy_section = section; | |
207 | local_symbol_set_frag (ret, frag); | |
91d6fa6a | 208 | ret->lsy_value = val; |
49309057 | 209 | |
5a49b8ac | 210 | hash_jam (local_hash, name_copy, (void *) ret); |
49309057 ILT |
211 | |
212 | return ret; | |
213 | } | |
214 | ||
215 | /* Convert a local symbol into a real symbol. Note that we do not | |
216 | reclaim the space used by the local symbol. */ | |
217 | ||
218 | static symbolS * | |
74937d39 | 219 | local_symbol_convert (struct local_symbol *locsym) |
49309057 ILT |
220 | { |
221 | symbolS *ret; | |
222 | ||
158184ac | 223 | gas_assert (locsym->lsy_flags.sy_local_symbol); |
49309057 ILT |
224 | if (local_symbol_converted_p (locsym)) |
225 | return local_symbol_get_real_symbol (locsym); | |
226 | ||
227 | ++local_symbol_conversion_count; | |
228 | ||
bd780143 | 229 | ret = symbol_new (locsym->lsy_name, locsym->lsy_section, locsym->lsy_value, |
49309057 ILT |
230 | local_symbol_get_frag (locsym)); |
231 | ||
232 | if (local_symbol_resolved_p (locsym)) | |
158184ac | 233 | ret->sy_flags.sy_resolved = 1; |
49309057 ILT |
234 | |
235 | /* Local symbols are always either defined or used. */ | |
158184ac | 236 | ret->sy_flags.sy_used = 1; |
49309057 | 237 | |
8c5e1ccd AO |
238 | #ifdef TC_LOCAL_SYMFIELD_CONVERT |
239 | TC_LOCAL_SYMFIELD_CONVERT (locsym, ret); | |
240 | #endif | |
241 | ||
49309057 ILT |
242 | symbol_table_insert (ret); |
243 | ||
244 | local_symbol_mark_converted (locsym); | |
245 | local_symbol_set_real_symbol (locsym, ret); | |
246 | ||
247 | hash_jam (local_hash, locsym->lsy_name, NULL); | |
248 | ||
249 | return ret; | |
250 | } | |
49309057 | 251 | \f |
a3371076 AM |
252 | static void |
253 | define_sym_at_dot (symbolS *symbolP) | |
254 | { | |
255 | symbolP->sy_frag = frag_now; | |
a3371076 AM |
256 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); |
257 | S_SET_SEGMENT (symbolP, now_seg); | |
258 | } | |
259 | ||
7c743825 KH |
260 | /* We have just seen "<name>:". |
261 | Creates a struct symbol unless it already exists. | |
262 | ||
263 | Gripes if we are redefining a symbol incompatibly (and ignores it). */ | |
252b5132 | 264 | |
252b5132 | 265 | symbolS * |
74937d39 KH |
266 | colon (/* Just seen "x:" - rattle symbols & frags. */ |
267 | const char *sym_name /* Symbol name, as a cannonical string. */ | |
268 | /* We copy this string: OK to alter later. */) | |
252b5132 | 269 | { |
7c743825 | 270 | register symbolS *symbolP; /* Symbol we are working with. */ |
252b5132 | 271 | |
7cf10893 | 272 | /* Sun local labels go out of scope whenever a non-local symbol is |
252b5132 | 273 | defined. */ |
7be1c489 AM |
274 | if (LOCAL_LABELS_DOLLAR |
275 | && !bfd_is_local_label_name (stdoutput, sym_name)) | |
276 | dollar_label_clear (); | |
252b5132 RH |
277 | |
278 | #ifndef WORKING_DOT_WORD | |
279 | if (new_broken_words) | |
280 | { | |
281 | struct broken_word *a; | |
282 | int possible_bytes; | |
283 | fragS *frag_tmp; | |
284 | char *frag_opcode; | |
285 | ||
7cf10893 NC |
286 | if (now_seg == absolute_section) |
287 | { | |
288 | as_bad (_("cannot define symbol `%s' in absolute section"), sym_name); | |
289 | return NULL; | |
290 | } | |
1d3b2b27 | 291 | |
252b5132 RH |
292 | possible_bytes = (md_short_jump_size |
293 | + new_broken_words * md_long_jump_size); | |
294 | ||
295 | frag_tmp = frag_now; | |
296 | frag_opcode = frag_var (rs_broken_word, | |
297 | possible_bytes, | |
298 | possible_bytes, | |
299 | (relax_substateT) 0, | |
300 | (symbolS *) broken_words, | |
301 | (offsetT) 0, | |
302 | NULL); | |
303 | ||
7c743825 KH |
304 | /* We want to store the pointer to where to insert the jump |
305 | table in the fr_opcode of the rs_broken_word frag. This | |
306 | requires a little hackery. */ | |
252b5132 RH |
307 | while (frag_tmp |
308 | && (frag_tmp->fr_type != rs_broken_word | |
309 | || frag_tmp->fr_opcode)) | |
310 | frag_tmp = frag_tmp->fr_next; | |
311 | know (frag_tmp); | |
312 | frag_tmp->fr_opcode = frag_opcode; | |
313 | new_broken_words = 0; | |
314 | ||
315 | for (a = broken_words; a && a->dispfrag == 0; a = a->next_broken_word) | |
316 | a->dispfrag = frag_tmp; | |
317 | } | |
318 | #endif /* WORKING_DOT_WORD */ | |
319 | ||
320 | if ((symbolP = symbol_find (sym_name)) != 0) | |
321 | { | |
06e77878 | 322 | S_CLEAR_WEAKREFR (symbolP); |
252b5132 RH |
323 | #ifdef RESOLVE_SYMBOL_REDEFINITION |
324 | if (RESOLVE_SYMBOL_REDEFINITION (symbolP)) | |
325 | return symbolP; | |
326 | #endif | |
7c743825 | 327 | /* Now check for undefined symbols. */ |
49309057 ILT |
328 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
329 | { | |
330 | struct local_symbol *locsym = (struct local_symbol *) symbolP; | |
331 | ||
332 | if (locsym->lsy_section != undefined_section | |
333 | && (local_symbol_get_frag (locsym) != frag_now | |
334 | || locsym->lsy_section != now_seg | |
bd780143 | 335 | || locsym->lsy_value != frag_now_fix ())) |
49309057 | 336 | { |
0e389e77 | 337 | as_bad (_("symbol `%s' is already defined"), sym_name); |
49309057 ILT |
338 | return symbolP; |
339 | } | |
340 | ||
341 | locsym->lsy_section = now_seg; | |
342 | local_symbol_set_frag (locsym, frag_now); | |
bd780143 | 343 | locsym->lsy_value = frag_now_fix (); |
49309057 | 344 | } |
b54788f8 | 345 | else if (!(S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
92757bc9 JB |
346 | || S_IS_COMMON (symbolP) |
347 | || S_IS_VOLATILE (symbolP)) | |
252b5132 | 348 | { |
89cdfe57 | 349 | if (S_IS_VOLATILE (symbolP)) |
92757bc9 JB |
350 | { |
351 | symbolP = symbol_clone (symbolP, 1); | |
352 | S_SET_VALUE (symbolP, 0); | |
353 | S_CLEAR_VOLATILE (symbolP); | |
354 | } | |
252b5132 RH |
355 | if (S_GET_VALUE (symbolP) == 0) |
356 | { | |
a3371076 | 357 | define_sym_at_dot (symbolP); |
252b5132 RH |
358 | #ifdef N_UNDF |
359 | know (N_UNDF == 0); | |
7c743825 | 360 | #endif /* if we have one, it better be zero. */ |
252b5132 RH |
361 | |
362 | } | |
363 | else | |
364 | { | |
7c743825 KH |
365 | /* There are still several cases to check: |
366 | ||
367 | A .comm/.lcomm symbol being redefined as initialized | |
368 | data is OK | |
369 | ||
370 | A .comm/.lcomm symbol being redefined with a larger | |
371 | size is also OK | |
372 | ||
373 | This only used to be allowed on VMS gas, but Sun cc | |
374 | on the sparc also depends on it. */ | |
252b5132 RH |
375 | |
376 | if (((!S_IS_DEBUG (symbolP) | |
377 | && (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)) | |
378 | && S_IS_EXTERNAL (symbolP)) | |
379 | || S_GET_SEGMENT (symbolP) == bss_section) | |
380 | && (now_seg == data_section | |
b3ce1bf7 | 381 | || now_seg == bss_section |
252b5132 RH |
382 | || now_seg == S_GET_SEGMENT (symbolP))) |
383 | { | |
7c743825 | 384 | /* Select which of the 2 cases this is. */ |
252b5132 RH |
385 | if (now_seg != data_section) |
386 | { | |
7c743825 KH |
387 | /* New .comm for prev .comm symbol. |
388 | ||
389 | If the new size is larger we just change its | |
390 | value. If the new size is smaller, we ignore | |
391 | this symbol. */ | |
252b5132 RH |
392 | if (S_GET_VALUE (symbolP) |
393 | < ((unsigned) frag_now_fix ())) | |
394 | { | |
395 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
396 | } | |
397 | } | |
398 | else | |
399 | { | |
400 | /* It is a .comm/.lcomm being converted to initialized | |
401 | data. */ | |
a3371076 | 402 | define_sym_at_dot (symbolP); |
252b5132 RH |
403 | } |
404 | } | |
405 | else | |
406 | { | |
4c63da97 AM |
407 | #if (!defined (OBJ_AOUT) && !defined (OBJ_MAYBE_AOUT) \ |
408 | && !defined (OBJ_BOUT) && !defined (OBJ_MAYBE_BOUT)) | |
409 | static const char *od_buf = ""; | |
252b5132 | 410 | #else |
4c63da97 AM |
411 | char od_buf[100]; |
412 | od_buf[0] = '\0'; | |
4c63da97 | 413 | if (OUTPUT_FLAVOR == bfd_target_aout_flavour) |
d1a6c242 KH |
414 | sprintf (od_buf, "%d.%d.", |
415 | S_GET_OTHER (symbolP), | |
416 | S_GET_DESC (symbolP)); | |
4c63da97 | 417 | #endif |
0e389e77 | 418 | as_bad (_("symbol `%s' is already defined as \"%s\"/%s%ld"), |
252b5132 RH |
419 | sym_name, |
420 | segment_name (S_GET_SEGMENT (symbolP)), | |
4c63da97 | 421 | od_buf, |
252b5132 | 422 | (long) S_GET_VALUE (symbolP)); |
252b5132 | 423 | } |
7c743825 | 424 | } /* if the undefined symbol has no value */ |
252b5132 RH |
425 | } |
426 | else | |
427 | { | |
7c743825 | 428 | /* Don't blow up if the definition is the same. */ |
252b5132 RH |
429 | if (!(frag_now == symbolP->sy_frag |
430 | && S_GET_VALUE (symbolP) == frag_now_fix () | |
431 | && S_GET_SEGMENT (symbolP) == now_seg)) | |
92757bc9 JB |
432 | { |
433 | as_bad (_("symbol `%s' is already defined"), sym_name); | |
434 | symbolP = symbol_clone (symbolP, 0); | |
a3371076 | 435 | define_sym_at_dot (symbolP); |
92757bc9 | 436 | } |
d4887adc | 437 | } |
252b5132 RH |
438 | |
439 | } | |
49309057 ILT |
440 | else if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, sym_name)) |
441 | { | |
442 | symbolP = (symbolS *) local_symbol_make (sym_name, now_seg, | |
443 | (valueT) frag_now_fix (), | |
444 | frag_now); | |
445 | } | |
252b5132 RH |
446 | else |
447 | { | |
448 | symbolP = symbol_new (sym_name, now_seg, (valueT) frag_now_fix (), | |
449 | frag_now); | |
252b5132 RH |
450 | |
451 | symbol_table_insert (symbolP); | |
d4887adc | 452 | } |
252b5132 RH |
453 | |
454 | if (mri_common_symbol != NULL) | |
455 | { | |
456 | /* This symbol is actually being defined within an MRI common | |
1d3b2b27 | 457 | section. This requires special handling. */ |
49309057 ILT |
458 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
459 | symbolP = local_symbol_convert ((struct local_symbol *) symbolP); | |
252b5132 RH |
460 | symbolP->sy_value.X_op = O_symbol; |
461 | symbolP->sy_value.X_add_symbol = mri_common_symbol; | |
462 | symbolP->sy_value.X_add_number = S_GET_VALUE (mri_common_symbol); | |
463 | symbolP->sy_frag = &zero_address_frag; | |
464 | S_SET_SEGMENT (symbolP, expr_section); | |
158184ac | 465 | symbolP->sy_flags.sy_mri_common = 1; |
252b5132 RH |
466 | } |
467 | ||
468 | #ifdef tc_frob_label | |
469 | tc_frob_label (symbolP); | |
470 | #endif | |
471 | #ifdef obj_frob_label | |
472 | obj_frob_label (symbolP); | |
473 | #endif | |
474 | ||
475 | return symbolP; | |
476 | } | |
477 | \f | |
7c743825 | 478 | /* Die if we can't insert the symbol. */ |
252b5132 | 479 | |
7c743825 | 480 | void |
74937d39 | 481 | symbol_table_insert (symbolS *symbolP) |
252b5132 RH |
482 | { |
483 | register const char *error_string; | |
484 | ||
485 | know (symbolP); | |
486 | know (S_GET_NAME (symbolP)); | |
487 | ||
49309057 ILT |
488 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
489 | { | |
490 | error_string = hash_jam (local_hash, S_GET_NAME (symbolP), | |
5a49b8ac | 491 | (void *) symbolP); |
49309057 | 492 | if (error_string != NULL) |
0e389e77 | 493 | as_fatal (_("inserting \"%s\" into symbol table failed: %s"), |
49309057 ILT |
494 | S_GET_NAME (symbolP), error_string); |
495 | return; | |
496 | } | |
497 | ||
5a49b8ac | 498 | if ((error_string = hash_jam (sy_hash, S_GET_NAME (symbolP), (void *) symbolP))) |
252b5132 | 499 | { |
0e389e77 | 500 | as_fatal (_("inserting \"%s\" into symbol table failed: %s"), |
252b5132 | 501 | S_GET_NAME (symbolP), error_string); |
7c743825 KH |
502 | } /* on error */ |
503 | } | |
252b5132 | 504 | \f |
7c743825 KH |
505 | /* If a symbol name does not exist, create it as undefined, and insert |
506 | it into the symbol table. Return a pointer to it. */ | |
507 | ||
252b5132 | 508 | symbolS * |
74937d39 | 509 | symbol_find_or_make (const char *name) |
252b5132 RH |
510 | { |
511 | register symbolS *symbolP; | |
512 | ||
513 | symbolP = symbol_find (name); | |
514 | ||
515 | if (symbolP == NULL) | |
516 | { | |
49309057 ILT |
517 | if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, name)) |
518 | { | |
519 | symbolP = md_undefined_symbol ((char *) name); | |
520 | if (symbolP != NULL) | |
521 | return symbolP; | |
522 | ||
523 | symbolP = (symbolS *) local_symbol_make (name, undefined_section, | |
524 | (valueT) 0, | |
525 | &zero_address_frag); | |
526 | return symbolP; | |
527 | } | |
49309057 | 528 | |
252b5132 RH |
529 | symbolP = symbol_make (name); |
530 | ||
531 | symbol_table_insert (symbolP); | |
532 | } /* if symbol wasn't found */ | |
533 | ||
534 | return (symbolP); | |
7c743825 | 535 | } |
252b5132 RH |
536 | |
537 | symbolS * | |
74937d39 | 538 | symbol_make (const char *name) |
252b5132 RH |
539 | { |
540 | symbolS *symbolP; | |
541 | ||
7c743825 | 542 | /* Let the machine description default it, e.g. for register names. */ |
252b5132 RH |
543 | symbolP = md_undefined_symbol ((char *) name); |
544 | ||
545 | if (!symbolP) | |
546 | symbolP = symbol_new (name, undefined_section, (valueT) 0, &zero_address_frag); | |
547 | ||
548 | return (symbolP); | |
7c743825 | 549 | } |
252b5132 | 550 | |
9497f5ac NC |
551 | symbolS * |
552 | symbol_clone (symbolS *orgsymP, int replace) | |
553 | { | |
554 | symbolS *newsymP; | |
6a2b6326 | 555 | asymbol *bsymorg, *bsymnew; |
9497f5ac | 556 | |
4a826962 MR |
557 | /* Make sure we never clone the dot special symbol. */ |
558 | gas_assert (orgsymP != &dot_symbol); | |
559 | ||
9497f5ac NC |
560 | /* Running local_symbol_convert on a clone that's not the one currently |
561 | in local_hash would incorrectly replace the hash entry. Thus the | |
562 | symbol must be converted here. Note that the rest of the function | |
563 | depends on not encountering an unconverted symbol. */ | |
564 | if (LOCAL_SYMBOL_CHECK (orgsymP)) | |
565 | orgsymP = local_symbol_convert ((struct local_symbol *) orgsymP); | |
6a2b6326 | 566 | bsymorg = orgsymP->bsym; |
9497f5ac | 567 | |
1e9cc1c2 | 568 | newsymP = (symbolS *) obstack_alloc (¬es, sizeof (*newsymP)); |
9497f5ac | 569 | *newsymP = *orgsymP; |
6a2b6326 JB |
570 | bsymnew = bfd_make_empty_symbol (bfd_asymbol_bfd (bsymorg)); |
571 | if (bsymnew == NULL) | |
885afe7b | 572 | as_fatal ("bfd_make_empty_symbol: %s", bfd_errmsg (bfd_get_error ())); |
6a2b6326 JB |
573 | newsymP->bsym = bsymnew; |
574 | bsymnew->name = bsymorg->name; | |
25313d6a | 575 | bsymnew->flags = bsymorg->flags & ~BSF_SECTION_SYM; |
9d75b288 | 576 | bsymnew->section = bsymorg->section; |
6a2b6326 JB |
577 | bfd_copy_private_symbol_data (bfd_asymbol_bfd (bsymorg), bsymorg, |
578 | bfd_asymbol_bfd (bsymnew), bsymnew); | |
579 | ||
580 | #ifdef obj_symbol_clone_hook | |
581 | obj_symbol_clone_hook (newsymP, orgsymP); | |
582 | #endif | |
583 | ||
584 | #ifdef tc_symbol_clone_hook | |
585 | tc_symbol_clone_hook (newsymP, orgsymP); | |
586 | #endif | |
9497f5ac NC |
587 | |
588 | if (replace) | |
589 | { | |
590 | if (symbol_rootP == orgsymP) | |
591 | symbol_rootP = newsymP; | |
592 | else if (orgsymP->sy_previous) | |
593 | { | |
594 | orgsymP->sy_previous->sy_next = newsymP; | |
595 | orgsymP->sy_previous = NULL; | |
596 | } | |
597 | if (symbol_lastP == orgsymP) | |
598 | symbol_lastP = newsymP; | |
599 | else if (orgsymP->sy_next) | |
600 | orgsymP->sy_next->sy_previous = newsymP; | |
73e24c68 AM |
601 | |
602 | /* Symbols that won't be output can't be external. */ | |
603 | S_CLEAR_EXTERNAL (orgsymP); | |
bdf128d6 | 604 | orgsymP->sy_previous = orgsymP->sy_next = orgsymP; |
9497f5ac NC |
605 | debug_verify_symchain (symbol_rootP, symbol_lastP); |
606 | ||
607 | symbol_table_insert (newsymP); | |
608 | } | |
bdf128d6 | 609 | else |
73e24c68 AM |
610 | { |
611 | /* Symbols that won't be output can't be external. */ | |
612 | S_CLEAR_EXTERNAL (newsymP); | |
613 | newsymP->sy_previous = newsymP->sy_next = newsymP; | |
614 | } | |
9497f5ac NC |
615 | |
616 | return newsymP; | |
617 | } | |
618 | ||
619 | /* Referenced symbols, if they are forward references, need to be cloned | |
620 | (without replacing the original) so that the value of the referenced | |
621 | symbols at the point of use . */ | |
622 | ||
623 | #undef symbol_clone_if_forward_ref | |
624 | symbolS * | |
625 | symbol_clone_if_forward_ref (symbolS *symbolP, int is_forward) | |
626 | { | |
627 | if (symbolP && !LOCAL_SYMBOL_CHECK (symbolP)) | |
628 | { | |
629 | symbolS *add_symbol = symbolP->sy_value.X_add_symbol; | |
630 | symbolS *op_symbol = symbolP->sy_value.X_op_symbol; | |
631 | ||
158184ac | 632 | if (symbolP->sy_flags.sy_forward_ref) |
9497f5ac NC |
633 | is_forward = 1; |
634 | ||
635 | if (is_forward) | |
636 | { | |
637 | /* assign_symbol() clones volatile symbols; pre-existing expressions | |
638 | hold references to the original instance, but want the current | |
639 | value. Just repeat the lookup. */ | |
640 | if (add_symbol && S_IS_VOLATILE (add_symbol)) | |
641 | add_symbol = symbol_find_exact (S_GET_NAME (add_symbol)); | |
642 | if (op_symbol && S_IS_VOLATILE (op_symbol)) | |
643 | op_symbol = symbol_find_exact (S_GET_NAME (op_symbol)); | |
644 | } | |
645 | ||
646 | /* Re-using sy_resolving here, as this routine cannot get called from | |
647 | symbol resolution code. */ | |
158184ac TG |
648 | if ((symbolP->bsym->section == expr_section |
649 | || symbolP->sy_flags.sy_forward_ref) | |
650 | && !symbolP->sy_flags.sy_resolving) | |
9497f5ac | 651 | { |
158184ac | 652 | symbolP->sy_flags.sy_resolving = 1; |
9497f5ac NC |
653 | add_symbol = symbol_clone_if_forward_ref (add_symbol, is_forward); |
654 | op_symbol = symbol_clone_if_forward_ref (op_symbol, is_forward); | |
158184ac | 655 | symbolP->sy_flags.sy_resolving = 0; |
9497f5ac NC |
656 | } |
657 | ||
158184ac | 658 | if (symbolP->sy_flags.sy_forward_ref |
9497f5ac NC |
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); | |
158184ac | 665 | symbolP->sy_flags.sy_resolving = 0; |
4a826962 MR |
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 | 899 | gas_assert (symbolP->bsym != NULL); |
158184ac | 900 | gas_assert (symbolP->sy_flags.sy_local_symbol == 0); |
9c2799c2 | 901 | gas_assert (symbolP->sy_next->sy_previous == symbolP); |
252b5132 RH |
902 | } |
903 | ||
9c2799c2 | 904 | gas_assert (lastP == symbolP); |
252b5132 RH |
905 | } |
906 | ||
280d71bf DB |
907 | #ifdef OBJ_COMPLEX_RELC |
908 | ||
909 | static int | |
910 | use_complex_relocs_for (symbolS * symp) | |
911 | { | |
912 | switch (symp->sy_value.X_op) | |
913 | { | |
914 | case O_constant: | |
915 | return 0; | |
916 | ||
917 | case O_symbol: | |
918 | case O_symbol_rva: | |
919 | case O_uminus: | |
920 | case O_bit_not: | |
921 | case O_logical_not: | |
922 | if ( (S_IS_COMMON (symp->sy_value.X_add_symbol) | |
923 | || S_IS_LOCAL (symp->sy_value.X_add_symbol)) | |
924 | && | |
925 | (S_IS_DEFINED (symp->sy_value.X_add_symbol) | |
926 | && S_GET_SEGMENT (symp->sy_value.X_add_symbol) != expr_section)) | |
927 | return 0; | |
928 | break; | |
929 | ||
930 | case O_multiply: | |
931 | case O_divide: | |
932 | case O_modulus: | |
933 | case O_left_shift: | |
934 | case O_right_shift: | |
935 | case O_bit_inclusive_or: | |
936 | case O_bit_or_not: | |
937 | case O_bit_exclusive_or: | |
938 | case O_bit_and: | |
939 | case O_add: | |
940 | case O_subtract: | |
941 | case O_eq: | |
942 | case O_ne: | |
943 | case O_lt: | |
944 | case O_le: | |
945 | case O_ge: | |
946 | case O_gt: | |
947 | case O_logical_and: | |
948 | case O_logical_or: | |
949 | ||
950 | if ( (S_IS_COMMON (symp->sy_value.X_add_symbol) | |
951 | || S_IS_LOCAL (symp->sy_value.X_add_symbol)) | |
952 | && | |
953 | (S_IS_COMMON (symp->sy_value.X_op_symbol) | |
954 | || S_IS_LOCAL (symp->sy_value.X_op_symbol)) | |
955 | ||
956 | && S_IS_DEFINED (symp->sy_value.X_add_symbol) | |
957 | && S_IS_DEFINED (symp->sy_value.X_op_symbol) | |
958 | && S_GET_SEGMENT (symp->sy_value.X_add_symbol) != expr_section | |
959 | && S_GET_SEGMENT (symp->sy_value.X_op_symbol) != expr_section) | |
960 | return 0; | |
961 | break; | |
962 | ||
963 | default: | |
964 | break; | |
965 | } | |
966 | return 1; | |
967 | } | |
968 | #endif | |
969 | ||
0909233e | 970 | static void |
5a0ade8b | 971 | report_op_error (symbolS *symp, symbolS *left, operatorT op, symbolS *right) |
0909233e AM |
972 | { |
973 | char *file; | |
974 | unsigned int line; | |
5a0ade8b AM |
975 | segT seg_left = left ? S_GET_SEGMENT (left) : 0; |
976 | segT seg_right = S_GET_SEGMENT (right); | |
977 | const char *opname; | |
978 | ||
979 | switch (op) | |
980 | { | |
981 | default: | |
982 | abort (); | |
983 | return; | |
984 | ||
985 | case O_uminus: opname = "-"; break; | |
986 | case O_bit_not: opname = "~"; break; | |
987 | case O_logical_not: opname = "!"; break; | |
988 | case O_multiply: opname = "*"; break; | |
989 | case O_divide: opname = "/"; break; | |
990 | case O_modulus: opname = "%"; break; | |
991 | case O_left_shift: opname = "<<"; break; | |
992 | case O_right_shift: opname = ">>"; break; | |
993 | case O_bit_inclusive_or: opname = "|"; break; | |
994 | case O_bit_or_not: opname = "|~"; break; | |
995 | case O_bit_exclusive_or: opname = "^"; break; | |
996 | case O_bit_and: opname = "&"; break; | |
997 | case O_add: opname = "+"; break; | |
998 | case O_subtract: opname = "-"; break; | |
999 | case O_eq: opname = "=="; break; | |
1000 | case O_ne: opname = "!="; break; | |
1001 | case O_lt: opname = "<"; break; | |
1002 | case O_le: opname = "<="; break; | |
1003 | case O_ge: opname = ">="; break; | |
1004 | case O_gt: opname = ">"; break; | |
1005 | case O_logical_and: opname = "&&"; break; | |
1006 | case O_logical_or: opname = "||"; break; | |
1007 | } | |
1d3b2b27 | 1008 | |
0909233e AM |
1009 | if (expr_symbol_where (symp, &file, &line)) |
1010 | { | |
5a0ade8b | 1011 | if (left) |
0909233e | 1012 | as_bad_where (file, line, |
5a0ade8b AM |
1013 | _("invalid operands (%s and %s sections) for `%s'"), |
1014 | seg_left->name, seg_right->name, opname); | |
1015 | else | |
0909233e | 1016 | as_bad_where (file, line, |
5a0ade8b AM |
1017 | _("invalid operand (%s section) for `%s'"), |
1018 | seg_right->name, opname); | |
0909233e AM |
1019 | } |
1020 | else | |
1021 | { | |
5a0ade8b AM |
1022 | const char *sname = S_GET_NAME (symp); |
1023 | ||
1024 | if (left) | |
1025 | as_bad (_("invalid operands (%s and %s sections) for `%s' when setting `%s'"), | |
1026 | seg_left->name, seg_right->name, opname, sname); | |
1027 | else | |
1028 | as_bad (_("invalid operand (%s section) for `%s' when setting `%s'"), | |
1029 | seg_right->name, opname, sname); | |
0909233e AM |
1030 | } |
1031 | } | |
1032 | ||
252b5132 RH |
1033 | /* Resolve the value of a symbol. This is called during the final |
1034 | pass over the symbol table to resolve any symbols with complex | |
1035 | values. */ | |
1036 | ||
1037 | valueT | |
74937d39 | 1038 | resolve_symbol_value (symbolS *symp) |
252b5132 RH |
1039 | { |
1040 | int resolved; | |
03e83a45 | 1041 | valueT final_val = 0; |
252b5132 RH |
1042 | segT final_seg; |
1043 | ||
49309057 ILT |
1044 | if (LOCAL_SYMBOL_CHECK (symp)) |
1045 | { | |
1046 | struct local_symbol *locsym = (struct local_symbol *) symp; | |
1047 | ||
bd780143 | 1048 | final_val = locsym->lsy_value; |
49309057 | 1049 | if (local_symbol_resolved_p (locsym)) |
bd780143 | 1050 | return final_val; |
49309057 | 1051 | |
bd780143 | 1052 | final_val += local_symbol_get_frag (locsym)->fr_address / OCTETS_PER_BYTE; |
49309057 | 1053 | |
6386f3a7 | 1054 | if (finalize_syms) |
49309057 | 1055 | { |
bd780143 | 1056 | locsym->lsy_value = final_val; |
49309057 ILT |
1057 | local_symbol_mark_resolved (locsym); |
1058 | } | |
1059 | ||
1060 | return final_val; | |
1061 | } | |
1062 | ||
158184ac | 1063 | if (symp->sy_flags.sy_resolved) |
252b5132 RH |
1064 | { |
1065 | if (symp->sy_value.X_op == O_constant) | |
1066 | return (valueT) symp->sy_value.X_add_number; | |
1067 | else | |
1068 | return 0; | |
1069 | } | |
1070 | ||
1071 | resolved = 0; | |
1072 | final_seg = S_GET_SEGMENT (symp); | |
1073 | ||
158184ac | 1074 | if (symp->sy_flags.sy_resolving) |
252b5132 | 1075 | { |
6386f3a7 | 1076 | if (finalize_syms) |
0e389e77 | 1077 | as_bad (_("symbol definition loop encountered at `%s'"), |
7c743825 | 1078 | S_GET_NAME (symp)); |
252b5132 RH |
1079 | final_val = 0; |
1080 | resolved = 1; | |
1081 | } | |
280d71bf DB |
1082 | #ifdef OBJ_COMPLEX_RELC |
1083 | else if (final_seg == expr_section | |
1084 | && use_complex_relocs_for (symp)) | |
1085 | { | |
1086 | symbolS * relc_symbol = NULL; | |
1087 | char * relc_symbol_name = NULL; | |
1088 | ||
1089 | relc_symbol_name = symbol_relc_make_expr (& symp->sy_value); | |
1090 | ||
1091 | /* For debugging, print out conversion input & output. */ | |
1092 | #ifdef DEBUG_SYMS | |
1093 | print_expr (& symp->sy_value); | |
1094 | if (relc_symbol_name) | |
1095 | fprintf (stderr, "-> relc symbol: %s\n", relc_symbol_name); | |
1096 | #endif | |
1097 | ||
1098 | if (relc_symbol_name != NULL) | |
1099 | relc_symbol = symbol_new (relc_symbol_name, undefined_section, | |
1100 | 0, & zero_address_frag); | |
1101 | ||
1102 | if (relc_symbol == NULL) | |
1103 | { | |
1104 | as_bad (_("cannot convert expression symbol %s to complex relocation"), | |
1105 | S_GET_NAME (symp)); | |
1106 | resolved = 0; | |
1107 | } | |
1108 | else | |
1109 | { | |
1110 | symbol_table_insert (relc_symbol); | |
1111 | ||
1112 | /* S_CLEAR_EXTERNAL (relc_symbol); */ | |
1113 | if (symp->bsym->flags & BSF_SRELC) | |
1114 | relc_symbol->bsym->flags |= BSF_SRELC; | |
1115 | else | |
1116 | relc_symbol->bsym->flags |= BSF_RELC; | |
1117 | /* symp->bsym->flags |= BSF_RELC; */ | |
1118 | copy_symbol_attributes (symp, relc_symbol); | |
1119 | symp->sy_value.X_op = O_symbol; | |
1120 | symp->sy_value.X_add_symbol = relc_symbol; | |
1121 | symp->sy_value.X_add_number = 0; | |
1122 | resolved = 1; | |
1123 | } | |
1124 | ||
1125 | final_seg = undefined_section; | |
1126 | goto exit_dont_set_value; | |
1127 | } | |
1128 | #endif | |
252b5132 RH |
1129 | else |
1130 | { | |
1131 | symbolS *add_symbol, *op_symbol; | |
1132 | offsetT left, right; | |
1133 | segT seg_left, seg_right; | |
1134 | operatorT op; | |
2d034539 | 1135 | int move_seg_ok; |
252b5132 | 1136 | |
158184ac | 1137 | symp->sy_flags.sy_resolving = 1; |
252b5132 RH |
1138 | |
1139 | /* Help out with CSE. */ | |
1140 | add_symbol = symp->sy_value.X_add_symbol; | |
1141 | op_symbol = symp->sy_value.X_op_symbol; | |
1142 | final_val = symp->sy_value.X_add_number; | |
1143 | op = symp->sy_value.X_op; | |
1144 | ||
1145 | switch (op) | |
1146 | { | |
1147 | default: | |
1148 | BAD_CASE (op); | |
1149 | break; | |
1150 | ||
1151 | case O_absent: | |
1152 | final_val = 0; | |
1153 | /* Fall through. */ | |
1154 | ||
1155 | case O_constant: | |
bea9907b | 1156 | final_val += symp->sy_frag->fr_address / OCTETS_PER_BYTE; |
252b5132 RH |
1157 | if (final_seg == expr_section) |
1158 | final_seg = absolute_section; | |
db557034 AM |
1159 | /* Fall through. */ |
1160 | ||
1161 | case O_register: | |
252b5132 RH |
1162 | resolved = 1; |
1163 | break; | |
1164 | ||
1165 | case O_symbol: | |
1166 | case O_symbol_rva: | |
6386f3a7 | 1167 | left = resolve_symbol_value (add_symbol); |
e0890092 AM |
1168 | seg_left = S_GET_SEGMENT (add_symbol); |
1169 | if (finalize_syms) | |
1170 | symp->sy_value.X_op_symbol = NULL; | |
252b5132 | 1171 | |
e0890092 | 1172 | do_symbol: |
06e77878 AO |
1173 | if (S_IS_WEAKREFR (symp)) |
1174 | { | |
9c2799c2 | 1175 | gas_assert (final_val == 0); |
06e77878 AO |
1176 | if (S_IS_WEAKREFR (add_symbol)) |
1177 | { | |
9c2799c2 | 1178 | gas_assert (add_symbol->sy_value.X_op == O_symbol |
06e77878 AO |
1179 | && add_symbol->sy_value.X_add_number == 0); |
1180 | add_symbol = add_symbol->sy_value.X_add_symbol; | |
9c2799c2 | 1181 | gas_assert (! S_IS_WEAKREFR (add_symbol)); |
06e77878 AO |
1182 | symp->sy_value.X_add_symbol = add_symbol; |
1183 | } | |
1184 | } | |
1185 | ||
158184ac | 1186 | if (symp->sy_flags.sy_mri_common) |
252b5132 RH |
1187 | { |
1188 | /* This is a symbol inside an MRI common section. The | |
e0890092 AM |
1189 | relocation routines are going to handle it specially. |
1190 | Don't change the value. */ | |
49309057 | 1191 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1192 | break; |
1193 | } | |
1194 | ||
6386f3a7 | 1195 | if (finalize_syms && final_val == 0) |
49309057 ILT |
1196 | { |
1197 | if (LOCAL_SYMBOL_CHECK (add_symbol)) | |
1198 | add_symbol = local_symbol_convert ((struct local_symbol *) | |
1199 | add_symbol); | |
1200 | copy_symbol_attributes (symp, add_symbol); | |
1201 | } | |
252b5132 | 1202 | |
e0890092 AM |
1203 | /* If we have equated this symbol to an undefined or common |
1204 | symbol, keep X_op set to O_symbol, and don't change | |
1205 | X_add_number. This permits the routine which writes out | |
1206 | relocation to detect this case, and convert the | |
1207 | relocation to be against the symbol to which this symbol | |
1208 | is equated. */ | |
977cdf5a | 1209 | if (! S_IS_DEFINED (add_symbol) |
7be1c489 | 1210 | #if defined (OBJ_COFF) && defined (TE_PE) |
977cdf5a NC |
1211 | || S_IS_WEAK (add_symbol) |
1212 | #endif | |
1213 | || S_IS_COMMON (add_symbol)) | |
252b5132 | 1214 | { |
6386f3a7 | 1215 | if (finalize_syms) |
252b5132 | 1216 | { |
252b5132 RH |
1217 | symp->sy_value.X_op = O_symbol; |
1218 | symp->sy_value.X_add_symbol = add_symbol; | |
1219 | symp->sy_value.X_add_number = final_val; | |
e0890092 AM |
1220 | /* Use X_op_symbol as a flag. */ |
1221 | symp->sy_value.X_op_symbol = add_symbol; | |
252b5132 | 1222 | } |
5a0ade8b | 1223 | final_seg = seg_left; |
252b5132 | 1224 | final_val = 0; |
49309057 | 1225 | resolved = symbol_resolved_p (add_symbol); |
158184ac | 1226 | symp->sy_flags.sy_resolving = 0; |
252b5132 RH |
1227 | goto exit_dont_set_value; |
1228 | } | |
0023dd27 AM |
1229 | else if (finalize_syms |
1230 | && ((final_seg == expr_section && seg_left != expr_section) | |
1231 | || symbol_shadow_p (symp))) | |
e0890092 AM |
1232 | { |
1233 | /* If the symbol is an expression symbol, do similarly | |
1234 | as for undefined and common syms above. Handles | |
1235 | "sym +/- expr" where "expr" cannot be evaluated | |
1236 | immediately, and we want relocations to be against | |
1237 | "sym", eg. because it is weak. */ | |
1238 | symp->sy_value.X_op = O_symbol; | |
1239 | symp->sy_value.X_add_symbol = add_symbol; | |
1240 | symp->sy_value.X_add_number = final_val; | |
1241 | symp->sy_value.X_op_symbol = add_symbol; | |
1242 | final_seg = seg_left; | |
1243 | final_val += symp->sy_frag->fr_address + left; | |
1244 | resolved = symbol_resolved_p (add_symbol); | |
158184ac | 1245 | symp->sy_flags.sy_resolving = 0; |
e0890092 AM |
1246 | goto exit_dont_set_value; |
1247 | } | |
252b5132 RH |
1248 | else |
1249 | { | |
1250 | final_val += symp->sy_frag->fr_address + left; | |
1251 | if (final_seg == expr_section || final_seg == undefined_section) | |
e0890092 | 1252 | final_seg = seg_left; |
252b5132 RH |
1253 | } |
1254 | ||
49309057 | 1255 | resolved = symbol_resolved_p (add_symbol); |
06e77878 AO |
1256 | if (S_IS_WEAKREFR (symp)) |
1257 | goto exit_dont_set_value; | |
252b5132 RH |
1258 | break; |
1259 | ||
1260 | case O_uminus: | |
1261 | case O_bit_not: | |
1262 | case O_logical_not: | |
6386f3a7 | 1263 | left = resolve_symbol_value (add_symbol); |
784b640d | 1264 | seg_left = S_GET_SEGMENT (add_symbol); |
252b5132 | 1265 | |
0909233e AM |
1266 | /* By reducing these to the relevant dyadic operator, we get |
1267 | !S -> S == 0 permitted on anything, | |
1268 | -S -> 0 - S only permitted on absolute | |
1269 | ~S -> S ^ ~0 only permitted on absolute */ | |
1270 | if (op != O_logical_not && seg_left != absolute_section | |
1271 | && finalize_syms) | |
5a0ade8b | 1272 | report_op_error (symp, NULL, op, add_symbol); |
1d3b2b27 | 1273 | |
0909233e AM |
1274 | if (final_seg == expr_section || final_seg == undefined_section) |
1275 | final_seg = absolute_section; | |
1d3b2b27 | 1276 | |
252b5132 RH |
1277 | if (op == O_uminus) |
1278 | left = -left; | |
1279 | else if (op == O_logical_not) | |
1280 | left = !left; | |
1281 | else | |
1282 | left = ~left; | |
1283 | ||
1284 | final_val += left + symp->sy_frag->fr_address; | |
252b5132 | 1285 | |
49309057 | 1286 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1287 | break; |
1288 | ||
1289 | case O_multiply: | |
1290 | case O_divide: | |
1291 | case O_modulus: | |
1292 | case O_left_shift: | |
1293 | case O_right_shift: | |
1294 | case O_bit_inclusive_or: | |
1295 | case O_bit_or_not: | |
1296 | case O_bit_exclusive_or: | |
1297 | case O_bit_and: | |
1298 | case O_add: | |
1299 | case O_subtract: | |
1300 | case O_eq: | |
1301 | case O_ne: | |
1302 | case O_lt: | |
1303 | case O_le: | |
1304 | case O_ge: | |
1305 | case O_gt: | |
1306 | case O_logical_and: | |
1307 | case O_logical_or: | |
6386f3a7 AM |
1308 | left = resolve_symbol_value (add_symbol); |
1309 | right = resolve_symbol_value (op_symbol); | |
252b5132 RH |
1310 | seg_left = S_GET_SEGMENT (add_symbol); |
1311 | seg_right = S_GET_SEGMENT (op_symbol); | |
1312 | ||
1313 | /* Simplify addition or subtraction of a constant by folding the | |
1314 | constant into X_add_number. */ | |
e0890092 | 1315 | if (op == O_add) |
252b5132 RH |
1316 | { |
1317 | if (seg_right == absolute_section) | |
1318 | { | |
e0890092 | 1319 | final_val += right; |
252b5132 RH |
1320 | goto do_symbol; |
1321 | } | |
e0890092 | 1322 | else if (seg_left == absolute_section) |
252b5132 | 1323 | { |
252b5132 RH |
1324 | final_val += left; |
1325 | add_symbol = op_symbol; | |
1326 | left = right; | |
e0890092 AM |
1327 | seg_left = seg_right; |
1328 | goto do_symbol; | |
1329 | } | |
1330 | } | |
1331 | else if (op == O_subtract) | |
1332 | { | |
1333 | if (seg_right == absolute_section) | |
1334 | { | |
1335 | final_val -= right; | |
252b5132 RH |
1336 | goto do_symbol; |
1337 | } | |
1338 | } | |
1339 | ||
2d034539 | 1340 | move_seg_ok = 1; |
e0890092 AM |
1341 | /* Equality and non-equality tests are permitted on anything. |
1342 | Subtraction, and other comparison operators are permitted if | |
1343 | both operands are in the same section. Otherwise, both | |
1344 | operands must be absolute. We already handled the case of | |
1345 | addition or subtraction of a constant above. This will | |
1346 | probably need to be changed for an object file format which | |
2d034539 NC |
1347 | supports arbitrary expressions, such as IEEE-695. */ |
1348 | if (!(seg_left == absolute_section | |
5a0ade8b | 1349 | && seg_right == absolute_section) |
0909233e AM |
1350 | && !(op == O_eq || op == O_ne) |
1351 | && !((op == O_subtract | |
1352 | || op == O_lt || op == O_le || op == O_ge || op == O_gt) | |
1353 | && seg_left == seg_right | |
1354 | && (seg_left != undefined_section | |
1355 | || add_symbol == op_symbol))) | |
2d034539 NC |
1356 | { |
1357 | /* Don't emit messages unless we're finalizing the symbol value, | |
1358 | otherwise we may get the same message multiple times. */ | |
1359 | if (finalize_syms) | |
5a0ade8b | 1360 | report_op_error (symp, add_symbol, op, op_symbol); |
2d034539 NC |
1361 | /* However do not move the symbol into the absolute section |
1362 | if it cannot currently be resolved - this would confuse | |
1363 | other parts of the assembler into believing that the | |
1364 | expression had been evaluated to zero. */ | |
1365 | else | |
1366 | move_seg_ok = 0; | |
1367 | } | |
1d3b2b27 | 1368 | |
2d034539 NC |
1369 | if (move_seg_ok |
1370 | && (final_seg == expr_section || final_seg == undefined_section)) | |
0909233e | 1371 | final_seg = absolute_section; |
252b5132 RH |
1372 | |
1373 | /* Check for division by zero. */ | |
1374 | if ((op == O_divide || op == O_modulus) && right == 0) | |
1375 | { | |
1376 | /* If seg_right is not absolute_section, then we've | |
e0890092 | 1377 | already issued a warning about using a bad symbol. */ |
6386f3a7 | 1378 | if (seg_right == absolute_section && finalize_syms) |
252b5132 RH |
1379 | { |
1380 | char *file; | |
1381 | unsigned int line; | |
1382 | ||
1383 | if (expr_symbol_where (symp, &file, &line)) | |
1384 | as_bad_where (file, line, _("division by zero")); | |
1385 | else | |
0e389e77 | 1386 | as_bad (_("division by zero when setting `%s'"), |
252b5132 RH |
1387 | S_GET_NAME (symp)); |
1388 | } | |
1389 | ||
1390 | right = 1; | |
1391 | } | |
1392 | ||
1393 | switch (symp->sy_value.X_op) | |
1394 | { | |
1395 | case O_multiply: left *= right; break; | |
1396 | case O_divide: left /= right; break; | |
1397 | case O_modulus: left %= right; break; | |
1398 | case O_left_shift: left <<= right; break; | |
1399 | case O_right_shift: left >>= right; break; | |
1400 | case O_bit_inclusive_or: left |= right; break; | |
1401 | case O_bit_or_not: left |= ~right; break; | |
1402 | case O_bit_exclusive_or: left ^= right; break; | |
1403 | case O_bit_and: left &= right; break; | |
1404 | case O_add: left += right; break; | |
1405 | case O_subtract: left -= right; break; | |
e0890092 AM |
1406 | case O_eq: |
1407 | case O_ne: | |
1408 | left = (left == right && seg_left == seg_right | |
1409 | && (seg_left != undefined_section | |
1410 | || add_symbol == op_symbol) | |
1411 | ? ~ (offsetT) 0 : 0); | |
1412 | if (symp->sy_value.X_op == O_ne) | |
1413 | left = ~left; | |
1414 | break; | |
252b5132 RH |
1415 | case O_lt: left = left < right ? ~ (offsetT) 0 : 0; break; |
1416 | case O_le: left = left <= right ? ~ (offsetT) 0 : 0; break; | |
1417 | case O_ge: left = left >= right ? ~ (offsetT) 0 : 0; break; | |
1418 | case O_gt: left = left > right ? ~ (offsetT) 0 : 0; break; | |
1419 | case O_logical_and: left = left && right; break; | |
1420 | case O_logical_or: left = left || right; break; | |
1421 | default: abort (); | |
1422 | } | |
1423 | ||
1424 | final_val += symp->sy_frag->fr_address + left; | |
1425 | if (final_seg == expr_section || final_seg == undefined_section) | |
784b640d AM |
1426 | { |
1427 | if (seg_left == undefined_section | |
1428 | || seg_right == undefined_section) | |
1429 | final_seg = undefined_section; | |
1430 | else if (seg_left == absolute_section) | |
1431 | final_seg = seg_right; | |
1432 | else | |
1433 | final_seg = seg_left; | |
1434 | } | |
49309057 ILT |
1435 | resolved = (symbol_resolved_p (add_symbol) |
1436 | && symbol_resolved_p (op_symbol)); | |
7c743825 | 1437 | break; |
252b5132 | 1438 | |
252b5132 RH |
1439 | case O_big: |
1440 | case O_illegal: | |
1441 | /* Give an error (below) if not in expr_section. We don't | |
1442 | want to worry about expr_section symbols, because they | |
1443 | are fictional (they are created as part of expression | |
1444 | resolution), and any problems may not actually mean | |
1445 | anything. */ | |
1446 | break; | |
1447 | } | |
1448 | ||
158184ac | 1449 | symp->sy_flags.sy_resolving = 0; |
252b5132 RH |
1450 | } |
1451 | ||
6386f3a7 | 1452 | if (finalize_syms) |
05bdb37e | 1453 | S_SET_VALUE (symp, final_val); |
252b5132 | 1454 | |
05bdb37e AM |
1455 | exit_dont_set_value: |
1456 | /* Always set the segment, even if not finalizing the value. | |
1457 | The segment is used to determine whether a symbol is defined. */ | |
05bdb37e | 1458 | S_SET_SEGMENT (symp, final_seg); |
252b5132 | 1459 | |
252b5132 | 1460 | /* Don't worry if we can't resolve an expr_section symbol. */ |
6386f3a7 | 1461 | if (finalize_syms) |
252b5132 RH |
1462 | { |
1463 | if (resolved) | |
158184ac | 1464 | symp->sy_flags.sy_resolved = 1; |
252b5132 RH |
1465 | else if (S_GET_SEGMENT (symp) != expr_section) |
1466 | { | |
0e389e77 | 1467 | as_bad (_("can't resolve value for symbol `%s'"), |
7c743825 | 1468 | S_GET_NAME (symp)); |
158184ac | 1469 | symp->sy_flags.sy_resolved = 1; |
252b5132 RH |
1470 | } |
1471 | } | |
1472 | ||
1473 | return final_val; | |
1474 | } | |
1475 | ||
5a49b8ac | 1476 | static void resolve_local_symbol (const char *, void *); |
49309057 ILT |
1477 | |
1478 | /* A static function passed to hash_traverse. */ | |
1479 | ||
1480 | static void | |
5a49b8ac | 1481 | resolve_local_symbol (const char *key ATTRIBUTE_UNUSED, void *value) |
49309057 ILT |
1482 | { |
1483 | if (value != NULL) | |
1e9cc1c2 | 1484 | resolve_symbol_value ((symbolS *) value); |
49309057 ILT |
1485 | } |
1486 | ||
49309057 ILT |
1487 | /* Resolve all local symbols. */ |
1488 | ||
1489 | void | |
74937d39 | 1490 | resolve_local_symbol_values (void) |
49309057 | 1491 | { |
49309057 | 1492 | hash_traverse (local_hash, resolve_local_symbol); |
49309057 ILT |
1493 | } |
1494 | ||
9497f5ac NC |
1495 | /* Obtain the current value of a symbol without changing any |
1496 | sub-expressions used. */ | |
1497 | ||
1498 | int | |
2e1e12b1 | 1499 | snapshot_symbol (symbolS **symbolPP, valueT *valueP, segT *segP, fragS **fragPP) |
9497f5ac | 1500 | { |
2e1e12b1 JB |
1501 | symbolS *symbolP = *symbolPP; |
1502 | ||
9497f5ac NC |
1503 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
1504 | { | |
1505 | struct local_symbol *locsym = (struct local_symbol *) symbolP; | |
1506 | ||
1507 | *valueP = locsym->lsy_value; | |
1508 | *segP = locsym->lsy_section; | |
1509 | *fragPP = local_symbol_get_frag (locsym); | |
1510 | } | |
1511 | else | |
1512 | { | |
91d6fa6a | 1513 | expressionS exp = symbolP->sy_value; |
9497f5ac | 1514 | |
158184ac | 1515 | if (!symbolP->sy_flags.sy_resolved && exp.X_op != O_illegal) |
9497f5ac NC |
1516 | { |
1517 | int resolved; | |
1518 | ||
158184ac | 1519 | if (symbolP->sy_flags.sy_resolving) |
9497f5ac | 1520 | return 0; |
158184ac | 1521 | symbolP->sy_flags.sy_resolving = 1; |
91d6fa6a | 1522 | resolved = resolve_expression (&exp); |
158184ac | 1523 | symbolP->sy_flags.sy_resolving = 0; |
9497f5ac NC |
1524 | if (!resolved) |
1525 | return 0; | |
1526 | ||
91d6fa6a | 1527 | switch (exp.X_op) |
9497f5ac NC |
1528 | { |
1529 | case O_constant: | |
1530 | case O_register: | |
2e1e12b1 | 1531 | if (!symbol_equated_p (symbolP)) |
9497f5ac NC |
1532 | break; |
1533 | /* Fall thru. */ | |
1534 | case O_symbol: | |
1535 | case O_symbol_rva: | |
91d6fa6a | 1536 | symbolP = exp.X_add_symbol; |
9497f5ac NC |
1537 | break; |
1538 | default: | |
1539 | return 0; | |
1540 | } | |
1541 | } | |
1542 | ||
d96eea71 | 1543 | *symbolPP = symbolP; |
91d6fa6a | 1544 | *valueP = exp.X_add_number; |
9497f5ac NC |
1545 | *segP = symbolP->bsym->section; |
1546 | *fragPP = symbolP->sy_frag; | |
1547 | ||
1548 | if (*segP == expr_section) | |
91d6fa6a | 1549 | switch (exp.X_op) |
9497f5ac NC |
1550 | { |
1551 | case O_constant: *segP = absolute_section; break; | |
1552 | case O_register: *segP = reg_section; break; | |
1553 | default: break; | |
1554 | } | |
1555 | } | |
1556 | ||
1557 | return 1; | |
1558 | } | |
1559 | ||
252b5132 RH |
1560 | /* Dollar labels look like a number followed by a dollar sign. Eg, "42$". |
1561 | They are *really* local. That is, they go out of scope whenever we see a | |
1562 | label that isn't local. Also, like fb labels, there can be multiple | |
1563 | instances of a dollar label. Therefor, we name encode each instance with | |
1564 | the instance number, keep a list of defined symbols separate from the real | |
1565 | symbol table, and we treat these buggers as a sparse array. */ | |
1566 | ||
1567 | static long *dollar_labels; | |
1568 | static long *dollar_label_instances; | |
1569 | static char *dollar_label_defines; | |
1570 | static unsigned long dollar_label_count; | |
1571 | static unsigned long dollar_label_max; | |
1572 | ||
7c743825 | 1573 | int |
74937d39 | 1574 | dollar_label_defined (long label) |
252b5132 RH |
1575 | { |
1576 | long *i; | |
1577 | ||
1578 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1579 | ||
1580 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1581 | if (*i == label) | |
1582 | return dollar_label_defines[i - dollar_labels]; | |
1583 | ||
7c743825 | 1584 | /* If we get here, label isn't defined. */ |
252b5132 | 1585 | return 0; |
7c743825 | 1586 | } |
252b5132 RH |
1587 | |
1588 | static long | |
74937d39 | 1589 | dollar_label_instance (long label) |
252b5132 RH |
1590 | { |
1591 | long *i; | |
1592 | ||
1593 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1594 | ||
1595 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1596 | if (*i == label) | |
1597 | return (dollar_label_instances[i - dollar_labels]); | |
1598 | ||
7c743825 KH |
1599 | /* If we get here, we haven't seen the label before. |
1600 | Therefore its instance count is zero. */ | |
252b5132 RH |
1601 | return 0; |
1602 | } | |
1603 | ||
7c743825 | 1604 | void |
74937d39 | 1605 | dollar_label_clear (void) |
252b5132 RH |
1606 | { |
1607 | memset (dollar_label_defines, '\0', (unsigned int) dollar_label_count); | |
1608 | } | |
1609 | ||
1610 | #define DOLLAR_LABEL_BUMP_BY 10 | |
1611 | ||
7c743825 | 1612 | void |
74937d39 | 1613 | define_dollar_label (long label) |
252b5132 RH |
1614 | { |
1615 | long *i; | |
1616 | ||
1617 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1618 | if (*i == label) | |
1619 | { | |
1620 | ++dollar_label_instances[i - dollar_labels]; | |
1621 | dollar_label_defines[i - dollar_labels] = 1; | |
1622 | return; | |
1623 | } | |
1624 | ||
7c743825 | 1625 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1626 | |
1627 | if (dollar_labels == NULL) | |
1628 | { | |
1629 | dollar_labels = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long)); | |
1630 | dollar_label_instances = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long)); | |
1e9cc1c2 | 1631 | dollar_label_defines = (char *) xmalloc (DOLLAR_LABEL_BUMP_BY); |
252b5132 RH |
1632 | dollar_label_max = DOLLAR_LABEL_BUMP_BY; |
1633 | dollar_label_count = 0; | |
1634 | } | |
1635 | else if (dollar_label_count == dollar_label_max) | |
1636 | { | |
1637 | dollar_label_max += DOLLAR_LABEL_BUMP_BY; | |
1638 | dollar_labels = (long *) xrealloc ((char *) dollar_labels, | |
1639 | dollar_label_max * sizeof (long)); | |
1640 | dollar_label_instances = (long *) xrealloc ((char *) dollar_label_instances, | |
1641 | dollar_label_max * sizeof (long)); | |
1e9cc1c2 | 1642 | dollar_label_defines = (char *) xrealloc (dollar_label_defines, dollar_label_max); |
7c743825 | 1643 | } /* if we needed to grow */ |
252b5132 RH |
1644 | |
1645 | dollar_labels[dollar_label_count] = label; | |
1646 | dollar_label_instances[dollar_label_count] = 1; | |
1647 | dollar_label_defines[dollar_label_count] = 1; | |
1648 | ++dollar_label_count; | |
1649 | } | |
1650 | ||
7c743825 KH |
1651 | /* Caller must copy returned name: we re-use the area for the next name. |
1652 | ||
1653 | The mth occurence of label n: is turned into the symbol "Ln^Am" | |
1654 | where n is the label number and m is the instance number. "L" makes | |
1655 | it a label discarded unless debugging and "^A"('\1') ensures no | |
1656 | ordinary symbol SHOULD get the same name as a local label | |
1657 | symbol. The first "4:" is "L4^A1" - the m numbers begin at 1. | |
1658 | ||
1659 | fb labels get the same treatment, except that ^B is used in place | |
1660 | of ^A. */ | |
1661 | ||
1662 | char * /* Return local label name. */ | |
74937d39 KH |
1663 | dollar_label_name (register long n, /* we just saw "n$:" : n a number. */ |
1664 | register int augend /* 0 for current instance, 1 for new instance. */) | |
252b5132 RH |
1665 | { |
1666 | long i; | |
7c743825 | 1667 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 RH |
1668 | static char symbol_name_build[24]; |
1669 | register char *p; | |
1670 | register char *q; | |
7c743825 | 1671 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1672 | |
1673 | know (n >= 0); | |
1674 | know (augend == 0 || augend == 1); | |
1675 | p = symbol_name_build; | |
f84dd1f0 NC |
1676 | #ifdef LOCAL_LABEL_PREFIX |
1677 | *p++ = LOCAL_LABEL_PREFIX; | |
1678 | #endif | |
252b5132 RH |
1679 | *p++ = 'L'; |
1680 | ||
7c743825 KH |
1681 | /* Next code just does sprintf( {}, "%d", n); */ |
1682 | /* Label number. */ | |
252b5132 RH |
1683 | q = symbol_name_temporary; |
1684 | for (*q++ = 0, i = n; i; ++q) | |
1685 | { | |
1686 | *q = i % 10 + '0'; | |
1687 | i /= 10; | |
1688 | } | |
1689 | while ((*p = *--q) != '\0') | |
1690 | ++p; | |
1691 | ||
aa257fcd | 1692 | *p++ = DOLLAR_LABEL_CHAR; /* ^A */ |
252b5132 | 1693 | |
7c743825 | 1694 | /* Instance number. */ |
252b5132 RH |
1695 | q = symbol_name_temporary; |
1696 | for (*q++ = 0, i = dollar_label_instance (n) + augend; i; ++q) | |
1697 | { | |
1698 | *q = i % 10 + '0'; | |
1699 | i /= 10; | |
1700 | } | |
1701 | while ((*p++ = *--q) != '\0');; | |
1702 | ||
7c743825 | 1703 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 RH |
1704 | return symbol_name_build; |
1705 | } | |
1706 | ||
47eebc20 | 1707 | /* Somebody else's idea of local labels. They are made by "n:" where n |
7c743825 KH |
1708 | is any decimal digit. Refer to them with |
1709 | "nb" for previous (backward) n: | |
1710 | or "nf" for next (forward) n:. | |
1711 | ||
1712 | We do a little better and let n be any number, not just a single digit, but | |
1713 | since the other guy's assembler only does ten, we treat the first ten | |
1714 | specially. | |
1715 | ||
1716 | Like someone else's assembler, we have one set of local label counters for | |
1717 | entire assembly, not one set per (sub)segment like in most assemblers. This | |
1718 | implies that one can refer to a label in another segment, and indeed some | |
1719 | crufty compilers have done just that. | |
1720 | ||
1721 | Since there could be a LOT of these things, treat them as a sparse | |
1722 | array. */ | |
252b5132 RH |
1723 | |
1724 | #define FB_LABEL_SPECIAL (10) | |
1725 | ||
1726 | static long fb_low_counter[FB_LABEL_SPECIAL]; | |
1727 | static long *fb_labels; | |
1728 | static long *fb_label_instances; | |
1729 | static long fb_label_count; | |
1730 | static long fb_label_max; | |
1731 | ||
7c743825 | 1732 | /* This must be more than FB_LABEL_SPECIAL. */ |
252b5132 RH |
1733 | #define FB_LABEL_BUMP_BY (FB_LABEL_SPECIAL + 6) |
1734 | ||
7c743825 | 1735 | static void |
74937d39 | 1736 | fb_label_init (void) |
252b5132 RH |
1737 | { |
1738 | memset ((void *) fb_low_counter, '\0', sizeof (fb_low_counter)); | |
7c743825 | 1739 | } |
252b5132 | 1740 | |
7c743825 KH |
1741 | /* Add one to the instance number of this fb label. */ |
1742 | ||
1743 | void | |
74937d39 | 1744 | fb_label_instance_inc (long label) |
252b5132 RH |
1745 | { |
1746 | long *i; | |
1747 | ||
1748 | if (label < FB_LABEL_SPECIAL) | |
1749 | { | |
1750 | ++fb_low_counter[label]; | |
1751 | return; | |
1752 | } | |
1753 | ||
1754 | if (fb_labels != NULL) | |
1755 | { | |
1756 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1757 | i < fb_labels + fb_label_count; ++i) | |
1758 | { | |
1759 | if (*i == label) | |
1760 | { | |
1761 | ++fb_label_instances[i - fb_labels]; | |
1762 | return; | |
7c743825 KH |
1763 | } /* if we find it */ |
1764 | } /* for each existing label */ | |
252b5132 RH |
1765 | } |
1766 | ||
7c743825 | 1767 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1768 | |
1769 | if (fb_labels == NULL) | |
1770 | { | |
1771 | fb_labels = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long)); | |
1772 | fb_label_instances = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long)); | |
1773 | fb_label_max = FB_LABEL_BUMP_BY; | |
1774 | fb_label_count = FB_LABEL_SPECIAL; | |
1775 | ||
1776 | } | |
1777 | else if (fb_label_count == fb_label_max) | |
1778 | { | |
1779 | fb_label_max += FB_LABEL_BUMP_BY; | |
1780 | fb_labels = (long *) xrealloc ((char *) fb_labels, | |
1781 | fb_label_max * sizeof (long)); | |
1782 | fb_label_instances = (long *) xrealloc ((char *) fb_label_instances, | |
1783 | fb_label_max * sizeof (long)); | |
7c743825 | 1784 | } /* if we needed to grow */ |
252b5132 RH |
1785 | |
1786 | fb_labels[fb_label_count] = label; | |
1787 | fb_label_instances[fb_label_count] = 1; | |
1788 | ++fb_label_count; | |
1789 | } | |
1790 | ||
7c743825 | 1791 | static long |
74937d39 | 1792 | fb_label_instance (long label) |
252b5132 RH |
1793 | { |
1794 | long *i; | |
1795 | ||
1796 | if (label < FB_LABEL_SPECIAL) | |
1797 | { | |
1798 | return (fb_low_counter[label]); | |
1799 | } | |
1800 | ||
1801 | if (fb_labels != NULL) | |
1802 | { | |
1803 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1804 | i < fb_labels + fb_label_count; ++i) | |
1805 | { | |
1806 | if (*i == label) | |
1807 | { | |
1808 | return (fb_label_instances[i - fb_labels]); | |
7c743825 KH |
1809 | } /* if we find it */ |
1810 | } /* for each existing label */ | |
252b5132 RH |
1811 | } |
1812 | ||
1813 | /* We didn't find the label, so this must be a reference to the | |
1814 | first instance. */ | |
1815 | return 0; | |
1816 | } | |
1817 | ||
7c743825 KH |
1818 | /* Caller must copy returned name: we re-use the area for the next name. |
1819 | ||
1820 | The mth occurence of label n: is turned into the symbol "Ln^Bm" | |
1821 | where n is the label number and m is the instance number. "L" makes | |
1822 | it a label discarded unless debugging and "^B"('\2') ensures no | |
1823 | ordinary symbol SHOULD get the same name as a local label | |
1824 | symbol. The first "4:" is "L4^B1" - the m numbers begin at 1. | |
1825 | ||
1826 | dollar labels get the same treatment, except that ^A is used in | |
1827 | place of ^B. */ | |
1828 | ||
1829 | char * /* Return local label name. */ | |
74937d39 KH |
1830 | fb_label_name (long n, /* We just saw "n:", "nf" or "nb" : n a number. */ |
1831 | long augend /* 0 for nb, 1 for n:, nf. */) | |
252b5132 RH |
1832 | { |
1833 | long i; | |
7c743825 | 1834 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 RH |
1835 | static char symbol_name_build[24]; |
1836 | register char *p; | |
1837 | register char *q; | |
7c743825 | 1838 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1839 | |
1840 | know (n >= 0); | |
a76903bf | 1841 | #ifdef TC_MMIX |
71ba24a1 | 1842 | know ((unsigned long) augend <= 2 /* See mmix_fb_label. */); |
a76903bf | 1843 | #else |
71ba24a1 | 1844 | know ((unsigned long) augend <= 1); |
a76903bf | 1845 | #endif |
252b5132 | 1846 | p = symbol_name_build; |
aa257fcd NC |
1847 | #ifdef LOCAL_LABEL_PREFIX |
1848 | *p++ = LOCAL_LABEL_PREFIX; | |
1849 | #endif | |
252b5132 RH |
1850 | *p++ = 'L'; |
1851 | ||
7c743825 KH |
1852 | /* Next code just does sprintf( {}, "%d", n); */ |
1853 | /* Label number. */ | |
252b5132 RH |
1854 | q = symbol_name_temporary; |
1855 | for (*q++ = 0, i = n; i; ++q) | |
1856 | { | |
1857 | *q = i % 10 + '0'; | |
1858 | i /= 10; | |
1859 | } | |
1860 | while ((*p = *--q) != '\0') | |
1861 | ++p; | |
1862 | ||
aa257fcd | 1863 | *p++ = LOCAL_LABEL_CHAR; /* ^B */ |
252b5132 | 1864 | |
7c743825 | 1865 | /* Instance number. */ |
252b5132 RH |
1866 | q = symbol_name_temporary; |
1867 | for (*q++ = 0, i = fb_label_instance (n) + augend; i; ++q) | |
1868 | { | |
1869 | *q = i % 10 + '0'; | |
1870 | i /= 10; | |
1871 | } | |
1872 | while ((*p++ = *--q) != '\0');; | |
1873 | ||
7c743825 | 1874 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 | 1875 | return (symbol_name_build); |
7c743825 | 1876 | } |
252b5132 | 1877 | |
7c743825 KH |
1878 | /* Decode name that may have been generated by foo_label_name() above. |
1879 | If the name wasn't generated by foo_label_name(), then return it | |
1880 | unaltered. This is used for error messages. */ | |
252b5132 RH |
1881 | |
1882 | char * | |
74937d39 | 1883 | decode_local_label_name (char *s) |
252b5132 RH |
1884 | { |
1885 | char *p; | |
1886 | char *symbol_decode; | |
1887 | int label_number; | |
1888 | int instance_number; | |
1889 | char *type; | |
d95767bf | 1890 | const char *message_format; |
91d6fa6a | 1891 | int lindex = 0; |
43ad3147 | 1892 | |
aa257fcd | 1893 | #ifdef LOCAL_LABEL_PREFIX |
91d6fa6a NC |
1894 | if (s[lindex] == LOCAL_LABEL_PREFIX) |
1895 | ++lindex; | |
aa257fcd | 1896 | #endif |
43ad3147 | 1897 | |
91d6fa6a | 1898 | if (s[lindex] != 'L') |
252b5132 RH |
1899 | return s; |
1900 | ||
91d6fa6a | 1901 | for (label_number = 0, p = s + lindex + 1; ISDIGIT (*p); ++p) |
252b5132 RH |
1902 | label_number = (10 * label_number) + *p - '0'; |
1903 | ||
aa257fcd | 1904 | if (*p == DOLLAR_LABEL_CHAR) |
252b5132 | 1905 | type = "dollar"; |
aa257fcd | 1906 | else if (*p == LOCAL_LABEL_CHAR) |
252b5132 RH |
1907 | type = "fb"; |
1908 | else | |
1909 | return s; | |
1910 | ||
3882b010 | 1911 | for (instance_number = 0, p++; ISDIGIT (*p); ++p) |
252b5132 RH |
1912 | instance_number = (10 * instance_number) + *p - '0'; |
1913 | ||
d95767bf | 1914 | message_format = _("\"%d\" (instance number %d of a %s label)"); |
1e9cc1c2 | 1915 | symbol_decode = (char *) obstack_alloc (¬es, strlen (message_format) + 30); |
252b5132 RH |
1916 | sprintf (symbol_decode, message_format, label_number, instance_number, type); |
1917 | ||
1918 | return symbol_decode; | |
1919 | } | |
1920 | ||
1921 | /* Get the value of a symbol. */ | |
1922 | ||
1923 | valueT | |
74937d39 | 1924 | S_GET_VALUE (symbolS *s) |
252b5132 | 1925 | { |
49309057 | 1926 | if (LOCAL_SYMBOL_CHECK (s)) |
ac62c346 | 1927 | return resolve_symbol_value (s); |
49309057 | 1928 | |
158184ac | 1929 | if (!s->sy_flags.sy_resolved) |
e46d99eb | 1930 | { |
6386f3a7 AM |
1931 | valueT val = resolve_symbol_value (s); |
1932 | if (!finalize_syms) | |
e46d99eb AM |
1933 | return val; |
1934 | } | |
06e77878 AO |
1935 | if (S_IS_WEAKREFR (s)) |
1936 | return S_GET_VALUE (s->sy_value.X_add_symbol); | |
1937 | ||
252b5132 RH |
1938 | if (s->sy_value.X_op != O_constant) |
1939 | { | |
158184ac | 1940 | if (! s->sy_flags.sy_resolved |
252b5132 RH |
1941 | || s->sy_value.X_op != O_symbol |
1942 | || (S_IS_DEFINED (s) && ! S_IS_COMMON (s))) | |
0e389e77 | 1943 | as_bad (_("attempt to get value of unresolved symbol `%s'"), |
252b5132 | 1944 | S_GET_NAME (s)); |
252b5132 RH |
1945 | } |
1946 | return (valueT) s->sy_value.X_add_number; | |
1947 | } | |
1948 | ||
1949 | /* Set the value of a symbol. */ | |
1950 | ||
1951 | void | |
74937d39 | 1952 | S_SET_VALUE (symbolS *s, valueT val) |
252b5132 | 1953 | { |
49309057 ILT |
1954 | if (LOCAL_SYMBOL_CHECK (s)) |
1955 | { | |
bd780143 | 1956 | ((struct local_symbol *) s)->lsy_value = val; |
49309057 ILT |
1957 | return; |
1958 | } | |
1959 | ||
252b5132 RH |
1960 | s->sy_value.X_op = O_constant; |
1961 | s->sy_value.X_add_number = (offsetT) val; | |
1962 | s->sy_value.X_unsigned = 0; | |
06e77878 | 1963 | S_CLEAR_WEAKREFR (s); |
252b5132 RH |
1964 | } |
1965 | ||
1966 | void | |
74937d39 | 1967 | copy_symbol_attributes (symbolS *dest, symbolS *src) |
252b5132 | 1968 | { |
49309057 | 1969 | if (LOCAL_SYMBOL_CHECK (dest)) |
7f2f689c | 1970 | dest = local_symbol_convert ((struct local_symbol *) dest); |
49309057 | 1971 | if (LOCAL_SYMBOL_CHECK (src)) |
7f2f689c | 1972 | src = local_symbol_convert ((struct local_symbol *) src); |
49309057 | 1973 | |
252b5132 RH |
1974 | /* In an expression, transfer the settings of these flags. |
1975 | The user can override later, of course. */ | |
ad04f5ce L |
1976 | #define COPIED_SYMFLAGS (BSF_FUNCTION | BSF_OBJECT \ |
1977 | | BSF_GNU_INDIRECT_FUNCTION) | |
252b5132 | 1978 | dest->bsym->flags |= src->bsym->flags & COPIED_SYMFLAGS; |
252b5132 RH |
1979 | |
1980 | #ifdef OBJ_COPY_SYMBOL_ATTRIBUTES | |
1981 | OBJ_COPY_SYMBOL_ATTRIBUTES (dest, src); | |
1982 | #endif | |
794ba86a DJ |
1983 | |
1984 | #ifdef TC_COPY_SYMBOL_ATTRIBUTES | |
1985 | TC_COPY_SYMBOL_ATTRIBUTES (dest, src); | |
1986 | #endif | |
252b5132 RH |
1987 | } |
1988 | ||
252b5132 | 1989 | int |
74937d39 | 1990 | S_IS_FUNCTION (symbolS *s) |
252b5132 | 1991 | { |
49309057 ILT |
1992 | flagword flags; |
1993 | ||
1994 | if (LOCAL_SYMBOL_CHECK (s)) | |
1995 | return 0; | |
1996 | ||
1997 | flags = s->bsym->flags; | |
252b5132 RH |
1998 | |
1999 | return (flags & BSF_FUNCTION) != 0; | |
2000 | } | |
2001 | ||
2002 | int | |
74937d39 | 2003 | S_IS_EXTERNAL (symbolS *s) |
252b5132 | 2004 | { |
49309057 ILT |
2005 | flagword flags; |
2006 | ||
2007 | if (LOCAL_SYMBOL_CHECK (s)) | |
2008 | return 0; | |
2009 | ||
2010 | flags = s->bsym->flags; | |
252b5132 | 2011 | |
7c743825 | 2012 | /* Sanity check. */ |
252b5132 RH |
2013 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
2014 | abort (); | |
2015 | ||
2016 | return (flags & BSF_GLOBAL) != 0; | |
2017 | } | |
2018 | ||
2019 | int | |
74937d39 | 2020 | S_IS_WEAK (symbolS *s) |
252b5132 | 2021 | { |
49309057 ILT |
2022 | if (LOCAL_SYMBOL_CHECK (s)) |
2023 | return 0; | |
06e77878 AO |
2024 | /* Conceptually, a weakrefr is weak if the referenced symbol is. We |
2025 | could probably handle a WEAKREFR as always weak though. E.g., if | |
2026 | the referenced symbol has lost its weak status, there's no reason | |
2027 | to keep handling the weakrefr as if it was weak. */ | |
2028 | if (S_IS_WEAKREFR (s)) | |
2029 | return S_IS_WEAK (s->sy_value.X_add_symbol); | |
252b5132 RH |
2030 | return (s->bsym->flags & BSF_WEAK) != 0; |
2031 | } | |
2032 | ||
06e77878 AO |
2033 | int |
2034 | S_IS_WEAKREFR (symbolS *s) | |
2035 | { | |
2036 | if (LOCAL_SYMBOL_CHECK (s)) | |
2037 | return 0; | |
158184ac | 2038 | return s->sy_flags.sy_weakrefr != 0; |
06e77878 AO |
2039 | } |
2040 | ||
2041 | int | |
2042 | S_IS_WEAKREFD (symbolS *s) | |
2043 | { | |
2044 | if (LOCAL_SYMBOL_CHECK (s)) | |
2045 | return 0; | |
158184ac | 2046 | return s->sy_flags.sy_weakrefd != 0; |
06e77878 AO |
2047 | } |
2048 | ||
252b5132 | 2049 | int |
74937d39 | 2050 | S_IS_COMMON (symbolS *s) |
252b5132 | 2051 | { |
49309057 ILT |
2052 | if (LOCAL_SYMBOL_CHECK (s)) |
2053 | return 0; | |
252b5132 RH |
2054 | return bfd_is_com_section (s->bsym->section); |
2055 | } | |
2056 | ||
2057 | int | |
74937d39 | 2058 | S_IS_DEFINED (symbolS *s) |
252b5132 | 2059 | { |
49309057 ILT |
2060 | if (LOCAL_SYMBOL_CHECK (s)) |
2061 | return ((struct local_symbol *) s)->lsy_section != undefined_section; | |
252b5132 RH |
2062 | return s->bsym->section != undefined_section; |
2063 | } | |
2064 | ||
a161fe53 AM |
2065 | |
2066 | #ifndef EXTERN_FORCE_RELOC | |
2067 | #define EXTERN_FORCE_RELOC IS_ELF | |
2068 | #endif | |
2069 | ||
2070 | /* Return true for symbols that should not be reduced to section | |
2071 | symbols or eliminated from expressions, because they may be | |
2072 | overridden by the linker. */ | |
2073 | int | |
74937d39 | 2074 | S_FORCE_RELOC (symbolS *s, int strict) |
a161fe53 AM |
2075 | { |
2076 | if (LOCAL_SYMBOL_CHECK (s)) | |
2077 | return ((struct local_symbol *) s)->lsy_section == undefined_section; | |
2078 | ||
ae6063d4 AM |
2079 | return ((strict |
2080 | && ((s->bsym->flags & BSF_WEAK) != 0 | |
2081 | || (EXTERN_FORCE_RELOC | |
2082 | && (s->bsym->flags & BSF_GLOBAL) != 0))) | |
c969da64 | 2083 | || (s->bsym->flags & BSF_GNU_INDIRECT_FUNCTION) != 0 |
a161fe53 AM |
2084 | || s->bsym->section == undefined_section |
2085 | || bfd_is_com_section (s->bsym->section)); | |
2086 | } | |
2087 | ||
252b5132 | 2088 | int |
74937d39 | 2089 | S_IS_DEBUG (symbolS *s) |
252b5132 | 2090 | { |
49309057 ILT |
2091 | if (LOCAL_SYMBOL_CHECK (s)) |
2092 | return 0; | |
252b5132 RH |
2093 | if (s->bsym->flags & BSF_DEBUGGING) |
2094 | return 1; | |
2095 | return 0; | |
2096 | } | |
2097 | ||
2098 | int | |
74937d39 | 2099 | S_IS_LOCAL (symbolS *s) |
252b5132 | 2100 | { |
49309057 | 2101 | flagword flags; |
252b5132 RH |
2102 | const char *name; |
2103 | ||
49309057 ILT |
2104 | if (LOCAL_SYMBOL_CHECK (s)) |
2105 | return 1; | |
2106 | ||
2107 | flags = s->bsym->flags; | |
2108 | ||
7c743825 | 2109 | /* Sanity check. */ |
252b5132 RH |
2110 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
2111 | abort (); | |
2112 | ||
2113 | if (bfd_get_section (s->bsym) == reg_section) | |
2114 | return 1; | |
2115 | ||
2116 | if (flag_strip_local_absolute | |
bb82af9f NC |
2117 | /* Keep BSF_FILE symbols in order to allow debuggers to identify |
2118 | the source file even when the object file is stripped. */ | |
2119 | && (flags & (BSF_GLOBAL | BSF_FILE)) == 0 | |
252b5132 RH |
2120 | && bfd_get_section (s->bsym) == absolute_section) |
2121 | return 1; | |
2122 | ||
2123 | name = S_GET_NAME (s); | |
2124 | return (name != NULL | |
2125 | && ! S_IS_DEBUG (s) | |
aa257fcd NC |
2126 | && (strchr (name, DOLLAR_LABEL_CHAR) |
2127 | || strchr (name, LOCAL_LABEL_CHAR) | |
df58fc94 | 2128 | || TC_LABEL_IS_LOCAL (name) |
252b5132 RH |
2129 | || (! flag_keep_locals |
2130 | && (bfd_is_local_label (stdoutput, s->bsym) | |
2131 | || (flag_mri | |
2132 | && name[0] == '?' | |
2133 | && name[1] == '?'))))); | |
2134 | } | |
2135 | ||
252b5132 | 2136 | int |
74937d39 | 2137 | S_IS_STABD (symbolS *s) |
252b5132 RH |
2138 | { |
2139 | return S_GET_NAME (s) == 0; | |
2140 | } | |
2141 | ||
6885131b AM |
2142 | int |
2143 | S_CAN_BE_REDEFINED (const symbolS *s) | |
2144 | { | |
2145 | if (LOCAL_SYMBOL_CHECK (s)) | |
2146 | return (local_symbol_get_frag ((struct local_symbol *) s) | |
2147 | == &predefined_address_frag); | |
2148 | /* Permit register names to be redefined. */ | |
2149 | return s->bsym->section == reg_section; | |
2150 | } | |
2151 | ||
9497f5ac NC |
2152 | int |
2153 | S_IS_VOLATILE (const symbolS *s) | |
2154 | { | |
2155 | if (LOCAL_SYMBOL_CHECK (s)) | |
2156 | return 0; | |
158184ac | 2157 | return s->sy_flags.sy_volatile; |
9497f5ac NC |
2158 | } |
2159 | ||
2160 | int | |
2161 | S_IS_FORWARD_REF (const symbolS *s) | |
2162 | { | |
2163 | if (LOCAL_SYMBOL_CHECK (s)) | |
2164 | return 0; | |
158184ac | 2165 | return s->sy_flags.sy_forward_ref; |
9497f5ac NC |
2166 | } |
2167 | ||
9758f3fc | 2168 | const char * |
74937d39 | 2169 | S_GET_NAME (symbolS *s) |
252b5132 | 2170 | { |
49309057 ILT |
2171 | if (LOCAL_SYMBOL_CHECK (s)) |
2172 | return ((struct local_symbol *) s)->lsy_name; | |
252b5132 RH |
2173 | return s->bsym->name; |
2174 | } | |
2175 | ||
2176 | segT | |
74937d39 | 2177 | S_GET_SEGMENT (symbolS *s) |
252b5132 | 2178 | { |
49309057 ILT |
2179 | if (LOCAL_SYMBOL_CHECK (s)) |
2180 | return ((struct local_symbol *) s)->lsy_section; | |
252b5132 RH |
2181 | return s->bsym->section; |
2182 | } | |
2183 | ||
2184 | void | |
74937d39 | 2185 | S_SET_SEGMENT (symbolS *s, segT seg) |
252b5132 RH |
2186 | { |
2187 | /* Don't reassign section symbols. The direct reason is to prevent seg | |
2188 | faults assigning back to const global symbols such as *ABS*, but it | |
2189 | shouldn't happen anyway. */ | |
2190 | ||
49309057 ILT |
2191 | if (LOCAL_SYMBOL_CHECK (s)) |
2192 | { | |
2193 | if (seg == reg_section) | |
2194 | s = local_symbol_convert ((struct local_symbol *) s); | |
2195 | else | |
2196 | { | |
2197 | ((struct local_symbol *) s)->lsy_section = seg; | |
2198 | return; | |
2199 | } | |
2200 | } | |
2201 | ||
252b5132 RH |
2202 | if (s->bsym->flags & BSF_SECTION_SYM) |
2203 | { | |
2204 | if (s->bsym->section != seg) | |
7c743825 | 2205 | abort (); |
252b5132 RH |
2206 | } |
2207 | else | |
2208 | s->bsym->section = seg; | |
2209 | } | |
2210 | ||
2211 | void | |
74937d39 | 2212 | S_SET_EXTERNAL (symbolS *s) |
252b5132 | 2213 | { |
49309057 ILT |
2214 | if (LOCAL_SYMBOL_CHECK (s)) |
2215 | s = local_symbol_convert ((struct local_symbol *) s); | |
252b5132 RH |
2216 | if ((s->bsym->flags & BSF_WEAK) != 0) |
2217 | { | |
2218 | /* Let .weak override .global. */ | |
2219 | return; | |
2220 | } | |
4d7c34bf NC |
2221 | if (s->bsym->flags & BSF_SECTION_SYM) |
2222 | { | |
2223 | char * file; | |
2224 | unsigned int line; | |
d1a6c242 | 2225 | |
4d7c34bf NC |
2226 | /* Do not reassign section symbols. */ |
2227 | as_where (& file, & line); | |
2228 | as_warn_where (file, line, | |
0e389e77 | 2229 | _("section symbols are already global")); |
4d7c34bf NC |
2230 | return; |
2231 | } | |
97c4f2d9 | 2232 | #ifndef TC_GLOBAL_REGISTER_SYMBOL_OK |
d0548f34 L |
2233 | if (S_GET_SEGMENT (s) == reg_section) |
2234 | { | |
2235 | as_bad ("can't make register symbol `%s' global", | |
2236 | S_GET_NAME (s)); | |
2237 | return; | |
2238 | } | |
97c4f2d9 | 2239 | #endif |
252b5132 | 2240 | s->bsym->flags |= BSF_GLOBAL; |
7c743825 | 2241 | s->bsym->flags &= ~(BSF_LOCAL | BSF_WEAK); |
977cdf5a | 2242 | |
22ba0981 | 2243 | #ifdef TE_PE |
977cdf5a NC |
2244 | if (! an_external_name && S_GET_NAME(s)[0] != '.') |
2245 | an_external_name = S_GET_NAME (s); | |
2246 | #endif | |
252b5132 RH |
2247 | } |
2248 | ||
2249 | void | |
74937d39 | 2250 | S_CLEAR_EXTERNAL (symbolS *s) |
252b5132 | 2251 | { |
49309057 ILT |
2252 | if (LOCAL_SYMBOL_CHECK (s)) |
2253 | return; | |
252b5132 RH |
2254 | if ((s->bsym->flags & BSF_WEAK) != 0) |
2255 | { | |
2256 | /* Let .weak override. */ | |
2257 | return; | |
2258 | } | |
2259 | s->bsym->flags |= BSF_LOCAL; | |
7c743825 | 2260 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_WEAK); |
252b5132 RH |
2261 | } |
2262 | ||
2263 | void | |
74937d39 | 2264 | S_SET_WEAK (symbolS *s) |
252b5132 | 2265 | { |
49309057 ILT |
2266 | if (LOCAL_SYMBOL_CHECK (s)) |
2267 | s = local_symbol_convert ((struct local_symbol *) s); | |
06e77878 AO |
2268 | #ifdef obj_set_weak_hook |
2269 | obj_set_weak_hook (s); | |
2270 | #endif | |
252b5132 | 2271 | s->bsym->flags |= BSF_WEAK; |
7c743825 | 2272 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_LOCAL); |
252b5132 RH |
2273 | } |
2274 | ||
06e77878 AO |
2275 | void |
2276 | S_SET_WEAKREFR (symbolS *s) | |
2277 | { | |
2278 | if (LOCAL_SYMBOL_CHECK (s)) | |
2279 | s = local_symbol_convert ((struct local_symbol *) s); | |
158184ac | 2280 | s->sy_flags.sy_weakrefr = 1; |
06e77878 AO |
2281 | /* If the alias was already used, make sure we mark the target as |
2282 | used as well, otherwise it might be dropped from the symbol | |
2283 | table. This may have unintended side effects if the alias is | |
2284 | later redirected to another symbol, such as keeping the unused | |
2285 | previous target in the symbol table. Since it will be weak, it's | |
2286 | not a big deal. */ | |
158184ac | 2287 | if (s->sy_flags.sy_used) |
06e77878 AO |
2288 | symbol_mark_used (s->sy_value.X_add_symbol); |
2289 | } | |
2290 | ||
2291 | void | |
2292 | S_CLEAR_WEAKREFR (symbolS *s) | |
2293 | { | |
2294 | if (LOCAL_SYMBOL_CHECK (s)) | |
2295 | return; | |
158184ac | 2296 | s->sy_flags.sy_weakrefr = 0; |
06e77878 AO |
2297 | } |
2298 | ||
2299 | void | |
2300 | S_SET_WEAKREFD (symbolS *s) | |
2301 | { | |
2302 | if (LOCAL_SYMBOL_CHECK (s)) | |
2303 | s = local_symbol_convert ((struct local_symbol *) s); | |
158184ac | 2304 | s->sy_flags.sy_weakrefd = 1; |
06e77878 AO |
2305 | S_SET_WEAK (s); |
2306 | } | |
2307 | ||
2308 | void | |
2309 | S_CLEAR_WEAKREFD (symbolS *s) | |
2310 | { | |
2311 | if (LOCAL_SYMBOL_CHECK (s)) | |
2312 | return; | |
158184ac | 2313 | if (s->sy_flags.sy_weakrefd) |
06e77878 | 2314 | { |
158184ac | 2315 | s->sy_flags.sy_weakrefd = 0; |
06e77878 AO |
2316 | /* If a weakref target symbol is weak, then it was never |
2317 | referenced directly before, not even in a .global directive, | |
2318 | so decay it to local. If it remains undefined, it will be | |
2319 | later turned into a global, like any other undefined | |
2320 | symbol. */ | |
2321 | if (s->bsym->flags & BSF_WEAK) | |
2322 | { | |
2323 | #ifdef obj_clear_weak_hook | |
2324 | obj_clear_weak_hook (s); | |
2325 | #endif | |
2326 | s->bsym->flags &= ~BSF_WEAK; | |
2327 | s->bsym->flags |= BSF_LOCAL; | |
2328 | } | |
2329 | } | |
2330 | } | |
2331 | ||
00f7efb6 | 2332 | void |
74937d39 | 2333 | S_SET_THREAD_LOCAL (symbolS *s) |
00f7efb6 JJ |
2334 | { |
2335 | if (LOCAL_SYMBOL_CHECK (s)) | |
2336 | s = local_symbol_convert ((struct local_symbol *) s); | |
2337 | if (bfd_is_com_section (s->bsym->section) | |
2338 | && (s->bsym->flags & BSF_THREAD_LOCAL) != 0) | |
2339 | return; | |
2340 | s->bsym->flags |= BSF_THREAD_LOCAL; | |
2341 | if ((s->bsym->flags & BSF_FUNCTION) != 0) | |
2342 | as_bad (_("Accessing function `%s' as thread-local object"), | |
2343 | S_GET_NAME (s)); | |
2344 | else if (! bfd_is_und_section (s->bsym->section) | |
2345 | && (s->bsym->section->flags & SEC_THREAD_LOCAL) == 0) | |
2346 | as_bad (_("Accessing `%s' as thread-local object"), | |
2347 | S_GET_NAME (s)); | |
2348 | } | |
2349 | ||
252b5132 | 2350 | void |
977cdf5a | 2351 | S_SET_NAME (symbolS *s, const char *name) |
252b5132 | 2352 | { |
49309057 ILT |
2353 | if (LOCAL_SYMBOL_CHECK (s)) |
2354 | { | |
2355 | ((struct local_symbol *) s)->lsy_name = name; | |
2356 | return; | |
2357 | } | |
252b5132 RH |
2358 | s->bsym->name = name; |
2359 | } | |
49309057 | 2360 | |
9497f5ac NC |
2361 | void |
2362 | S_SET_VOLATILE (symbolS *s) | |
2363 | { | |
2364 | if (LOCAL_SYMBOL_CHECK (s)) | |
2365 | s = local_symbol_convert ((struct local_symbol *) s); | |
158184ac | 2366 | s->sy_flags.sy_volatile = 1; |
9497f5ac NC |
2367 | } |
2368 | ||
92757bc9 JB |
2369 | void |
2370 | S_CLEAR_VOLATILE (symbolS *s) | |
2371 | { | |
2372 | if (!LOCAL_SYMBOL_CHECK (s)) | |
158184ac | 2373 | s->sy_flags.sy_volatile = 0; |
92757bc9 JB |
2374 | } |
2375 | ||
9497f5ac NC |
2376 | void |
2377 | S_SET_FORWARD_REF (symbolS *s) | |
2378 | { | |
2379 | if (LOCAL_SYMBOL_CHECK (s)) | |
2380 | s = local_symbol_convert ((struct local_symbol *) s); | |
158184ac | 2381 | s->sy_flags.sy_forward_ref = 1; |
9497f5ac NC |
2382 | } |
2383 | ||
49309057 ILT |
2384 | /* Return the previous symbol in a chain. */ |
2385 | ||
2386 | symbolS * | |
74937d39 | 2387 | symbol_previous (symbolS *s) |
49309057 ILT |
2388 | { |
2389 | if (LOCAL_SYMBOL_CHECK (s)) | |
2390 | abort (); | |
2391 | return s->sy_previous; | |
2392 | } | |
2393 | ||
49309057 ILT |
2394 | /* Return the next symbol in a chain. */ |
2395 | ||
2396 | symbolS * | |
74937d39 | 2397 | symbol_next (symbolS *s) |
49309057 ILT |
2398 | { |
2399 | if (LOCAL_SYMBOL_CHECK (s)) | |
2400 | abort (); | |
2401 | return s->sy_next; | |
2402 | } | |
2403 | ||
2404 | /* Return a pointer to the value of a symbol as an expression. */ | |
2405 | ||
2406 | expressionS * | |
74937d39 | 2407 | symbol_get_value_expression (symbolS *s) |
49309057 ILT |
2408 | { |
2409 | if (LOCAL_SYMBOL_CHECK (s)) | |
2410 | s = local_symbol_convert ((struct local_symbol *) s); | |
2411 | return &s->sy_value; | |
2412 | } | |
2413 | ||
2414 | /* Set the value of a symbol to an expression. */ | |
2415 | ||
2416 | void | |
74937d39 | 2417 | symbol_set_value_expression (symbolS *s, const expressionS *exp) |
49309057 ILT |
2418 | { |
2419 | if (LOCAL_SYMBOL_CHECK (s)) | |
2420 | s = local_symbol_convert ((struct local_symbol *) s); | |
2421 | s->sy_value = *exp; | |
06e77878 | 2422 | S_CLEAR_WEAKREFR (s); |
49309057 ILT |
2423 | } |
2424 | ||
087d837e L |
2425 | /* Return whether 2 symbols are the same. */ |
2426 | ||
2427 | int | |
2428 | symbol_same_p (symbolS *s1, symbolS *s2) | |
2429 | { | |
158184ac | 2430 | if (s1->sy_flags.sy_local_symbol |
087d837e L |
2431 | && local_symbol_converted_p ((struct local_symbol *) s1)) |
2432 | s1 = local_symbol_get_real_symbol ((struct local_symbol *) s1); | |
158184ac | 2433 | if (s2->sy_flags.sy_local_symbol |
087d837e L |
2434 | && local_symbol_converted_p ((struct local_symbol *) s2)) |
2435 | s2 = local_symbol_get_real_symbol ((struct local_symbol *) s2); | |
2436 | return s1 == s2; | |
2437 | } | |
2438 | ||
be95a9c1 AM |
2439 | /* Return a pointer to the X_add_number component of a symbol. */ |
2440 | ||
514d955d | 2441 | offsetT * |
be95a9c1 AM |
2442 | symbol_X_add_number (symbolS *s) |
2443 | { | |
be95a9c1 | 2444 | if (LOCAL_SYMBOL_CHECK (s)) |
514d955d | 2445 | return (offsetT *) &((struct local_symbol *) s)->lsy_value; |
be95a9c1 | 2446 | |
514d955d | 2447 | return &s->sy_value.X_add_number; |
be95a9c1 AM |
2448 | } |
2449 | ||
b7d6ed97 RH |
2450 | /* Set the value of SYM to the current position in the current segment. */ |
2451 | ||
2452 | void | |
74937d39 | 2453 | symbol_set_value_now (symbolS *sym) |
b7d6ed97 RH |
2454 | { |
2455 | S_SET_SEGMENT (sym, now_seg); | |
2456 | S_SET_VALUE (sym, frag_now_fix ()); | |
2457 | symbol_set_frag (sym, frag_now); | |
2458 | } | |
2459 | ||
49309057 ILT |
2460 | /* Set the frag of a symbol. */ |
2461 | ||
2462 | void | |
74937d39 | 2463 | symbol_set_frag (symbolS *s, fragS *f) |
49309057 ILT |
2464 | { |
2465 | if (LOCAL_SYMBOL_CHECK (s)) | |
2466 | { | |
2467 | local_symbol_set_frag ((struct local_symbol *) s, f); | |
2468 | return; | |
2469 | } | |
2470 | s->sy_frag = f; | |
06e77878 | 2471 | S_CLEAR_WEAKREFR (s); |
49309057 ILT |
2472 | } |
2473 | ||
2474 | /* Return the frag of a symbol. */ | |
2475 | ||
2476 | fragS * | |
74937d39 | 2477 | symbol_get_frag (symbolS *s) |
49309057 ILT |
2478 | { |
2479 | if (LOCAL_SYMBOL_CHECK (s)) | |
2480 | return local_symbol_get_frag ((struct local_symbol *) s); | |
2481 | return s->sy_frag; | |
2482 | } | |
2483 | ||
2484 | /* Mark a symbol as having been used. */ | |
2485 | ||
2486 | void | |
74937d39 | 2487 | symbol_mark_used (symbolS *s) |
49309057 ILT |
2488 | { |
2489 | if (LOCAL_SYMBOL_CHECK (s)) | |
2490 | return; | |
158184ac | 2491 | s->sy_flags.sy_used = 1; |
06e77878 AO |
2492 | if (S_IS_WEAKREFR (s)) |
2493 | symbol_mark_used (s->sy_value.X_add_symbol); | |
49309057 ILT |
2494 | } |
2495 | ||
2496 | /* Clear the mark of whether a symbol has been used. */ | |
2497 | ||
2498 | void | |
74937d39 | 2499 | symbol_clear_used (symbolS *s) |
49309057 ILT |
2500 | { |
2501 | if (LOCAL_SYMBOL_CHECK (s)) | |
2502 | s = local_symbol_convert ((struct local_symbol *) s); | |
158184ac | 2503 | s->sy_flags.sy_used = 0; |
49309057 ILT |
2504 | } |
2505 | ||
2506 | /* Return whether a symbol has been used. */ | |
2507 | ||
2508 | int | |
74937d39 | 2509 | symbol_used_p (symbolS *s) |
49309057 ILT |
2510 | { |
2511 | if (LOCAL_SYMBOL_CHECK (s)) | |
2512 | return 1; | |
158184ac | 2513 | return s->sy_flags.sy_used; |
49309057 ILT |
2514 | } |
2515 | ||
2516 | /* Mark a symbol as having been used in a reloc. */ | |
2517 | ||
2518 | void | |
74937d39 | 2519 | symbol_mark_used_in_reloc (symbolS *s) |
49309057 ILT |
2520 | { |
2521 | if (LOCAL_SYMBOL_CHECK (s)) | |
2522 | s = local_symbol_convert ((struct local_symbol *) s); | |
158184ac | 2523 | s->sy_flags.sy_used_in_reloc = 1; |
49309057 ILT |
2524 | } |
2525 | ||
2526 | /* Clear the mark of whether a symbol has been used in a reloc. */ | |
2527 | ||
2528 | void | |
74937d39 | 2529 | symbol_clear_used_in_reloc (symbolS *s) |
49309057 ILT |
2530 | { |
2531 | if (LOCAL_SYMBOL_CHECK (s)) | |
2532 | return; | |
158184ac | 2533 | s->sy_flags.sy_used_in_reloc = 0; |
49309057 ILT |
2534 | } |
2535 | ||
2536 | /* Return whether a symbol has been used in a reloc. */ | |
2537 | ||
2538 | int | |
74937d39 | 2539 | symbol_used_in_reloc_p (symbolS *s) |
49309057 ILT |
2540 | { |
2541 | if (LOCAL_SYMBOL_CHECK (s)) | |
2542 | return 0; | |
158184ac | 2543 | return s->sy_flags.sy_used_in_reloc; |
49309057 ILT |
2544 | } |
2545 | ||
2546 | /* Mark a symbol as an MRI common symbol. */ | |
2547 | ||
2548 | void | |
74937d39 | 2549 | symbol_mark_mri_common (symbolS *s) |
49309057 ILT |
2550 | { |
2551 | if (LOCAL_SYMBOL_CHECK (s)) | |
2552 | s = local_symbol_convert ((struct local_symbol *) s); | |
158184ac | 2553 | s->sy_flags.sy_mri_common = 1; |
49309057 ILT |
2554 | } |
2555 | ||
2556 | /* Clear the mark of whether a symbol is an MRI common symbol. */ | |
2557 | ||
2558 | void | |
74937d39 | 2559 | symbol_clear_mri_common (symbolS *s) |
49309057 ILT |
2560 | { |
2561 | if (LOCAL_SYMBOL_CHECK (s)) | |
2562 | return; | |
158184ac | 2563 | s->sy_flags.sy_mri_common = 0; |
49309057 ILT |
2564 | } |
2565 | ||
2566 | /* Return whether a symbol is an MRI common symbol. */ | |
2567 | ||
2568 | int | |
74937d39 | 2569 | symbol_mri_common_p (symbolS *s) |
49309057 ILT |
2570 | { |
2571 | if (LOCAL_SYMBOL_CHECK (s)) | |
2572 | return 0; | |
158184ac | 2573 | return s->sy_flags.sy_mri_common; |
49309057 ILT |
2574 | } |
2575 | ||
2576 | /* Mark a symbol as having been written. */ | |
2577 | ||
2578 | void | |
74937d39 | 2579 | symbol_mark_written (symbolS *s) |
49309057 ILT |
2580 | { |
2581 | if (LOCAL_SYMBOL_CHECK (s)) | |
2582 | return; | |
158184ac | 2583 | s->sy_flags.sy_written = 1; |
49309057 ILT |
2584 | } |
2585 | ||
2586 | /* Clear the mark of whether a symbol has been written. */ | |
2587 | ||
2588 | void | |
74937d39 | 2589 | symbol_clear_written (symbolS *s) |
49309057 ILT |
2590 | { |
2591 | if (LOCAL_SYMBOL_CHECK (s)) | |
2592 | return; | |
158184ac | 2593 | s->sy_flags.sy_written = 0; |
49309057 ILT |
2594 | } |
2595 | ||
2596 | /* Return whether a symbol has been written. */ | |
2597 | ||
2598 | int | |
74937d39 | 2599 | symbol_written_p (symbolS *s) |
49309057 ILT |
2600 | { |
2601 | if (LOCAL_SYMBOL_CHECK (s)) | |
2602 | return 0; | |
158184ac | 2603 | return s->sy_flags.sy_written; |
49309057 ILT |
2604 | } |
2605 | ||
2606 | /* Mark a symbol has having been resolved. */ | |
2607 | ||
2608 | void | |
74937d39 | 2609 | symbol_mark_resolved (symbolS *s) |
49309057 ILT |
2610 | { |
2611 | if (LOCAL_SYMBOL_CHECK (s)) | |
2612 | { | |
2613 | local_symbol_mark_resolved ((struct local_symbol *) s); | |
2614 | return; | |
2615 | } | |
158184ac | 2616 | s->sy_flags.sy_resolved = 1; |
49309057 ILT |
2617 | } |
2618 | ||
2619 | /* Return whether a symbol has been resolved. */ | |
2620 | ||
2621 | int | |
74937d39 | 2622 | symbol_resolved_p (symbolS *s) |
49309057 ILT |
2623 | { |
2624 | if (LOCAL_SYMBOL_CHECK (s)) | |
2625 | return local_symbol_resolved_p ((struct local_symbol *) s); | |
158184ac | 2626 | return s->sy_flags.sy_resolved; |
49309057 ILT |
2627 | } |
2628 | ||
2629 | /* Return whether a symbol is a section symbol. */ | |
2630 | ||
2631 | int | |
74937d39 | 2632 | symbol_section_p (symbolS *s ATTRIBUTE_UNUSED) |
49309057 ILT |
2633 | { |
2634 | if (LOCAL_SYMBOL_CHECK (s)) | |
2635 | return 0; | |
49309057 | 2636 | return (s->bsym->flags & BSF_SECTION_SYM) != 0; |
49309057 ILT |
2637 | } |
2638 | ||
2639 | /* Return whether a symbol is equated to another symbol. */ | |
2640 | ||
2641 | int | |
74937d39 | 2642 | symbol_equated_p (symbolS *s) |
49309057 ILT |
2643 | { |
2644 | if (LOCAL_SYMBOL_CHECK (s)) | |
2645 | return 0; | |
2646 | return s->sy_value.X_op == O_symbol; | |
2647 | } | |
2648 | ||
e0890092 AM |
2649 | /* Return whether a symbol is equated to another symbol, and should be |
2650 | treated specially when writing out relocs. */ | |
2651 | ||
2652 | int | |
74937d39 | 2653 | symbol_equated_reloc_p (symbolS *s) |
e0890092 AM |
2654 | { |
2655 | if (LOCAL_SYMBOL_CHECK (s)) | |
2656 | return 0; | |
2657 | /* X_op_symbol, normally not used for O_symbol, is set by | |
2658 | resolve_symbol_value to flag expression syms that have been | |
2659 | equated. */ | |
2660 | return (s->sy_value.X_op == O_symbol | |
7be1c489 | 2661 | #if defined (OBJ_COFF) && defined (TE_PE) |
977cdf5a NC |
2662 | && ! S_IS_WEAK (s) |
2663 | #endif | |
158184ac | 2664 | && ((s->sy_flags.sy_resolved && s->sy_value.X_op_symbol != NULL) |
e0890092 AM |
2665 | || ! S_IS_DEFINED (s) |
2666 | || S_IS_COMMON (s))); | |
2667 | } | |
2668 | ||
49309057 ILT |
2669 | /* Return whether a symbol has a constant value. */ |
2670 | ||
2671 | int | |
74937d39 | 2672 | symbol_constant_p (symbolS *s) |
49309057 ILT |
2673 | { |
2674 | if (LOCAL_SYMBOL_CHECK (s)) | |
2675 | return 1; | |
2676 | return s->sy_value.X_op == O_constant; | |
2677 | } | |
2678 | ||
bdf128d6 JB |
2679 | /* Return whether a symbol was cloned and thus removed from the global |
2680 | symbol list. */ | |
2681 | ||
2682 | int | |
2683 | symbol_shadow_p (symbolS *s) | |
2684 | { | |
2685 | if (LOCAL_SYMBOL_CHECK (s)) | |
2686 | return 0; | |
2687 | return s->sy_next == s; | |
2688 | } | |
2689 | ||
49309057 ILT |
2690 | /* Return the BFD symbol for a symbol. */ |
2691 | ||
2692 | asymbol * | |
74937d39 | 2693 | symbol_get_bfdsym (symbolS *s) |
49309057 ILT |
2694 | { |
2695 | if (LOCAL_SYMBOL_CHECK (s)) | |
2696 | s = local_symbol_convert ((struct local_symbol *) s); | |
2697 | return s->bsym; | |
2698 | } | |
2699 | ||
2700 | /* Set the BFD symbol for a symbol. */ | |
2701 | ||
2702 | void | |
74937d39 | 2703 | symbol_set_bfdsym (symbolS *s, asymbol *bsym) |
49309057 ILT |
2704 | { |
2705 | if (LOCAL_SYMBOL_CHECK (s)) | |
2706 | s = local_symbol_convert ((struct local_symbol *) s); | |
22fe14ad NC |
2707 | /* Usually, it is harmless to reset a symbol to a BFD section |
2708 | symbol. For example, obj_elf_change_section sets the BFD symbol | |
2709 | of an old symbol with the newly created section symbol. But when | |
2710 | we have multiple sections with the same name, the newly created | |
2711 | section may have the same name as an old section. We check if the | |
2712 | old symbol has been already marked as a section symbol before | |
2713 | resetting it. */ | |
2714 | if ((s->bsym->flags & BSF_SECTION_SYM) == 0) | |
2715 | s->bsym = bsym; | |
2716 | /* else XXX - What do we do now ? */ | |
49309057 ILT |
2717 | } |
2718 | ||
49309057 ILT |
2719 | #ifdef OBJ_SYMFIELD_TYPE |
2720 | ||
2721 | /* Get a pointer to the object format information for a symbol. */ | |
2722 | ||
2723 | OBJ_SYMFIELD_TYPE * | |
74937d39 | 2724 | symbol_get_obj (symbolS *s) |
49309057 ILT |
2725 | { |
2726 | if (LOCAL_SYMBOL_CHECK (s)) | |
2727 | s = local_symbol_convert ((struct local_symbol *) s); | |
2728 | return &s->sy_obj; | |
2729 | } | |
2730 | ||
2731 | /* Set the object format information for a symbol. */ | |
2732 | ||
2733 | void | |
74937d39 | 2734 | symbol_set_obj (symbolS *s, OBJ_SYMFIELD_TYPE *o) |
49309057 ILT |
2735 | { |
2736 | if (LOCAL_SYMBOL_CHECK (s)) | |
2737 | s = local_symbol_convert ((struct local_symbol *) s); | |
2738 | s->sy_obj = *o; | |
2739 | } | |
2740 | ||
2741 | #endif /* OBJ_SYMFIELD_TYPE */ | |
2742 | ||
2743 | #ifdef TC_SYMFIELD_TYPE | |
2744 | ||
2745 | /* Get a pointer to the processor information for a symbol. */ | |
2746 | ||
2747 | TC_SYMFIELD_TYPE * | |
74937d39 | 2748 | symbol_get_tc (symbolS *s) |
49309057 ILT |
2749 | { |
2750 | if (LOCAL_SYMBOL_CHECK (s)) | |
2751 | s = local_symbol_convert ((struct local_symbol *) s); | |
2752 | return &s->sy_tc; | |
2753 | } | |
2754 | ||
2755 | /* Set the processor information for a symbol. */ | |
2756 | ||
2757 | void | |
74937d39 | 2758 | symbol_set_tc (symbolS *s, TC_SYMFIELD_TYPE *o) |
49309057 ILT |
2759 | { |
2760 | if (LOCAL_SYMBOL_CHECK (s)) | |
2761 | s = local_symbol_convert ((struct local_symbol *) s); | |
2762 | s->sy_tc = *o; | |
2763 | } | |
2764 | ||
2765 | #endif /* TC_SYMFIELD_TYPE */ | |
2766 | ||
252b5132 | 2767 | void |
74937d39 | 2768 | symbol_begin (void) |
252b5132 RH |
2769 | { |
2770 | symbol_lastP = NULL; | |
7c743825 | 2771 | symbol_rootP = NULL; /* In case we have 0 symbols (!!) */ |
252b5132 | 2772 | sy_hash = hash_new (); |
49309057 | 2773 | local_hash = hash_new (); |
252b5132 RH |
2774 | |
2775 | memset ((char *) (&abs_symbol), '\0', sizeof (abs_symbol)); | |
252b5132 RH |
2776 | #if defined (EMIT_SECTION_SYMBOLS) || !defined (RELOC_REQUIRES_SYMBOL) |
2777 | abs_symbol.bsym = bfd_abs_section.symbol; | |
252b5132 RH |
2778 | #endif |
2779 | abs_symbol.sy_value.X_op = O_constant; | |
2780 | abs_symbol.sy_frag = &zero_address_frag; | |
2781 | ||
2782 | if (LOCAL_LABELS_FB) | |
2783 | fb_label_init (); | |
2784 | } | |
4a826962 MR |
2785 | |
2786 | void | |
2787 | dot_symbol_init (void) | |
2788 | { | |
2789 | dot_symbol.bsym = bfd_make_empty_symbol (stdoutput); | |
2790 | if (dot_symbol.bsym == NULL) | |
2791 | as_fatal ("bfd_make_empty_symbol: %s", bfd_errmsg (bfd_get_error ())); | |
2792 | dot_symbol.bsym->name = "."; | |
158184ac | 2793 | dot_symbol.sy_flags.sy_forward_ref = 1; |
4a826962 MR |
2794 | dot_symbol.sy_value.X_op = O_constant; |
2795 | } | |
252b5132 RH |
2796 | \f |
2797 | int indent_level; | |
2798 | ||
2799 | /* Maximum indent level. | |
2800 | Available for modification inside a gdb session. */ | |
87c245cc | 2801 | static int max_indent_level = 8; |
252b5132 | 2802 | |
252b5132 | 2803 | void |
74937d39 | 2804 | print_symbol_value_1 (FILE *file, symbolS *sym) |
252b5132 RH |
2805 | { |
2806 | const char *name = S_GET_NAME (sym); | |
2807 | if (!name || !name[0]) | |
2808 | name = "(unnamed)"; | |
d2df793a NC |
2809 | fprintf (file, "sym "); |
2810 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) sym)); | |
2811 | fprintf (file, " %s", name); | |
49309057 ILT |
2812 | |
2813 | if (LOCAL_SYMBOL_CHECK (sym)) | |
2814 | { | |
2815 | struct local_symbol *locsym = (struct local_symbol *) sym; | |
d2df793a NC |
2816 | |
2817 | if (local_symbol_get_frag (locsym) != & zero_address_frag | |
49309057 | 2818 | && local_symbol_get_frag (locsym) != NULL) |
d2df793a NC |
2819 | { |
2820 | fprintf (file, " frag "); | |
2821 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) local_symbol_get_frag (locsym))); | |
2822 | } | |
49309057 ILT |
2823 | if (local_symbol_resolved_p (locsym)) |
2824 | fprintf (file, " resolved"); | |
2825 | fprintf (file, " local"); | |
2826 | } | |
2827 | else | |
2828 | { | |
2829 | if (sym->sy_frag != &zero_address_frag) | |
d2df793a NC |
2830 | { |
2831 | fprintf (file, " frag "); | |
2832 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) sym->sy_frag)); | |
2833 | } | |
158184ac | 2834 | if (sym->sy_flags.sy_written) |
49309057 | 2835 | fprintf (file, " written"); |
158184ac | 2836 | if (sym->sy_flags.sy_resolved) |
49309057 | 2837 | fprintf (file, " resolved"); |
158184ac | 2838 | else if (sym->sy_flags.sy_resolving) |
49309057 | 2839 | fprintf (file, " resolving"); |
158184ac | 2840 | if (sym->sy_flags.sy_used_in_reloc) |
49309057 | 2841 | fprintf (file, " used-in-reloc"); |
158184ac | 2842 | if (sym->sy_flags.sy_used) |
49309057 ILT |
2843 | fprintf (file, " used"); |
2844 | if (S_IS_LOCAL (sym)) | |
2845 | fprintf (file, " local"); | |
e97b3f28 | 2846 | if (S_IS_EXTERNAL (sym)) |
49309057 | 2847 | fprintf (file, " extern"); |
06e77878 AO |
2848 | if (S_IS_WEAK (sym)) |
2849 | fprintf (file, " weak"); | |
49309057 ILT |
2850 | if (S_IS_DEBUG (sym)) |
2851 | fprintf (file, " debug"); | |
2852 | if (S_IS_DEFINED (sym)) | |
2853 | fprintf (file, " defined"); | |
2854 | } | |
06e77878 AO |
2855 | if (S_IS_WEAKREFR (sym)) |
2856 | fprintf (file, " weakrefr"); | |
2857 | if (S_IS_WEAKREFD (sym)) | |
2858 | fprintf (file, " weakrefd"); | |
252b5132 | 2859 | fprintf (file, " %s", segment_name (S_GET_SEGMENT (sym))); |
49309057 | 2860 | if (symbol_resolved_p (sym)) |
252b5132 RH |
2861 | { |
2862 | segT s = S_GET_SEGMENT (sym); | |
2863 | ||
2864 | if (s != undefined_section | |
411863a4 | 2865 | && s != expr_section) |
0af1713e | 2866 | fprintf (file, " %lx", (unsigned long) S_GET_VALUE (sym)); |
252b5132 RH |
2867 | } |
2868 | else if (indent_level < max_indent_level | |
2869 | && S_GET_SEGMENT (sym) != undefined_section) | |
2870 | { | |
2871 | indent_level++; | |
2872 | fprintf (file, "\n%*s<", indent_level * 4, ""); | |
49309057 ILT |
2873 | if (LOCAL_SYMBOL_CHECK (sym)) |
2874 | fprintf (file, "constant %lx", | |
0af1713e | 2875 | (unsigned long) ((struct local_symbol *) sym)->lsy_value); |
49309057 ILT |
2876 | else |
2877 | print_expr_1 (file, &sym->sy_value); | |
252b5132 RH |
2878 | fprintf (file, ">"); |
2879 | indent_level--; | |
2880 | } | |
2881 | fflush (file); | |
2882 | } | |
2883 | ||
2884 | void | |
74937d39 | 2885 | print_symbol_value (symbolS *sym) |
252b5132 RH |
2886 | { |
2887 | indent_level = 0; | |
2888 | print_symbol_value_1 (stderr, sym); | |
2889 | fprintf (stderr, "\n"); | |
2890 | } | |
2891 | ||
2892 | static void | |
74937d39 | 2893 | print_binary (FILE *file, const char *name, expressionS *exp) |
252b5132 RH |
2894 | { |
2895 | indent_level++; | |
2896 | fprintf (file, "%s\n%*s<", name, indent_level * 4, ""); | |
2897 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2898 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2899 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2900 | fprintf (file, ">"); | |
2901 | indent_level--; | |
2902 | } | |
2903 | ||
2904 | void | |
74937d39 | 2905 | print_expr_1 (FILE *file, expressionS *exp) |
252b5132 | 2906 | { |
d2df793a NC |
2907 | fprintf (file, "expr "); |
2908 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) exp)); | |
2909 | fprintf (file, " "); | |
252b5132 RH |
2910 | switch (exp->X_op) |
2911 | { | |
2912 | case O_illegal: | |
2913 | fprintf (file, "illegal"); | |
2914 | break; | |
2915 | case O_absent: | |
2916 | fprintf (file, "absent"); | |
2917 | break; | |
2918 | case O_constant: | |
0af1713e | 2919 | fprintf (file, "constant %lx", (unsigned long) exp->X_add_number); |
252b5132 RH |
2920 | break; |
2921 | case O_symbol: | |
2922 | indent_level++; | |
2923 | fprintf (file, "symbol\n%*s<", indent_level * 4, ""); | |
2924 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2925 | fprintf (file, ">"); | |
2926 | maybe_print_addnum: | |
2927 | if (exp->X_add_number) | |
2928 | fprintf (file, "\n%*s%lx", indent_level * 4, "", | |
0af1713e | 2929 | (unsigned long) exp->X_add_number); |
252b5132 RH |
2930 | indent_level--; |
2931 | break; | |
2932 | case O_register: | |
2933 | fprintf (file, "register #%d", (int) exp->X_add_number); | |
2934 | break; | |
2935 | case O_big: | |
2936 | fprintf (file, "big"); | |
2937 | break; | |
2938 | case O_uminus: | |
2939 | fprintf (file, "uminus -<"); | |
2940 | indent_level++; | |
2941 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2942 | fprintf (file, ">"); | |
2943 | goto maybe_print_addnum; | |
2944 | case O_bit_not: | |
2945 | fprintf (file, "bit_not"); | |
2946 | break; | |
2947 | case O_multiply: | |
2948 | print_binary (file, "multiply", exp); | |
2949 | break; | |
2950 | case O_divide: | |
2951 | print_binary (file, "divide", exp); | |
2952 | break; | |
2953 | case O_modulus: | |
2954 | print_binary (file, "modulus", exp); | |
2955 | break; | |
2956 | case O_left_shift: | |
2957 | print_binary (file, "lshift", exp); | |
2958 | break; | |
2959 | case O_right_shift: | |
2960 | print_binary (file, "rshift", exp); | |
2961 | break; | |
2962 | case O_bit_inclusive_or: | |
2963 | print_binary (file, "bit_ior", exp); | |
2964 | break; | |
2965 | case O_bit_exclusive_or: | |
2966 | print_binary (file, "bit_xor", exp); | |
2967 | break; | |
2968 | case O_bit_and: | |
2969 | print_binary (file, "bit_and", exp); | |
2970 | break; | |
2971 | case O_eq: | |
2972 | print_binary (file, "eq", exp); | |
2973 | break; | |
2974 | case O_ne: | |
2975 | print_binary (file, "ne", exp); | |
2976 | break; | |
2977 | case O_lt: | |
2978 | print_binary (file, "lt", exp); | |
2979 | break; | |
2980 | case O_le: | |
2981 | print_binary (file, "le", exp); | |
2982 | break; | |
2983 | case O_ge: | |
2984 | print_binary (file, "ge", exp); | |
2985 | break; | |
2986 | case O_gt: | |
2987 | print_binary (file, "gt", exp); | |
2988 | break; | |
2989 | case O_logical_and: | |
2990 | print_binary (file, "logical_and", exp); | |
2991 | break; | |
2992 | case O_logical_or: | |
2993 | print_binary (file, "logical_or", exp); | |
2994 | break; | |
2995 | case O_add: | |
2996 | indent_level++; | |
2997 | fprintf (file, "add\n%*s<", indent_level * 4, ""); | |
2998 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2999 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
3000 | print_symbol_value_1 (file, exp->X_op_symbol); | |
3001 | fprintf (file, ">"); | |
3002 | goto maybe_print_addnum; | |
3003 | case O_subtract: | |
3004 | indent_level++; | |
3005 | fprintf (file, "subtract\n%*s<", indent_level * 4, ""); | |
3006 | print_symbol_value_1 (file, exp->X_add_symbol); | |
3007 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
3008 | print_symbol_value_1 (file, exp->X_op_symbol); | |
3009 | fprintf (file, ">"); | |
3010 | goto maybe_print_addnum; | |
3011 | default: | |
3012 | fprintf (file, "{unknown opcode %d}", (int) exp->X_op); | |
3013 | break; | |
3014 | } | |
3015 | fflush (stdout); | |
3016 | } | |
3017 | ||
3018 | void | |
74937d39 | 3019 | print_expr (expressionS *exp) |
252b5132 RH |
3020 | { |
3021 | print_expr_1 (stderr, exp); | |
3022 | fprintf (stderr, "\n"); | |
3023 | } | |
3024 | ||
3025 | void | |
74937d39 | 3026 | symbol_print_statistics (FILE *file) |
252b5132 RH |
3027 | { |
3028 | hash_print_statistics (file, "symbol table", sy_hash); | |
49309057 ILT |
3029 | hash_print_statistics (file, "mini local symbol table", local_hash); |
3030 | fprintf (file, "%lu mini local symbols created, %lu converted\n", | |
3031 | local_symbol_count, local_symbol_conversion_count); | |
252b5132 | 3032 | } |
280d71bf DB |
3033 | |
3034 | #ifdef OBJ_COMPLEX_RELC | |
3035 | ||
3036 | /* Convert given symbol to a new complex-relocation symbol name. This | |
6f12865c | 3037 | may be a recursive function, since it might be called for non-leaf |
280d71bf | 3038 | nodes (plain symbols) in the expression tree. The caller owns the |
6f12865c AM |
3039 | returning string, so should free it eventually. Errors are |
3040 | indicated via as_bad and a NULL return value. The given symbol | |
280d71bf DB |
3041 | is marked with sy_used_in_reloc. */ |
3042 | ||
3043 | char * | |
3044 | symbol_relc_make_sym (symbolS * sym) | |
3045 | { | |
3046 | char * terminal = NULL; | |
3047 | const char * sname; | |
3048 | char typetag; | |
3049 | int sname_len; | |
3050 | ||
9c2799c2 | 3051 | gas_assert (sym != NULL); |
280d71bf DB |
3052 | |
3053 | /* Recurse to symbol_relc_make_expr if this symbol | |
3054 | is defined as an expression or a plain value. */ | |
3055 | if ( S_GET_SEGMENT (sym) == expr_section | |
3056 | || S_GET_SEGMENT (sym) == absolute_section) | |
3057 | return symbol_relc_make_expr (& sym->sy_value); | |
3058 | ||
3059 | /* This may be a "fake symbol" L0\001, referring to ".". | |
3060 | Write out a special null symbol to refer to this position. */ | |
3061 | if (! strcmp (S_GET_NAME (sym), FAKE_LABEL_NAME)) | |
3062 | return xstrdup ("."); | |
3063 | ||
3064 | /* We hope this is a plain leaf symbol. Construct the encoding | |
3065 | as {S,s}II...:CCCCCCC.... | |
3066 | where 'S'/'s' means section symbol / plain symbol | |
3067 | III is decimal for the symbol name length | |
3068 | CCC is the symbol name itself. */ | |
3069 | symbol_mark_used_in_reloc (sym); | |
3070 | ||
3071 | sname = S_GET_NAME (sym); | |
3072 | sname_len = strlen (sname); | |
3073 | typetag = symbol_section_p (sym) ? 'S' : 's'; | |
3074 | ||
3075 | terminal = xmalloc (1 /* S or s */ | |
3076 | + 8 /* sname_len in decimal */ | |
3077 | + 1 /* _ spacer */ | |
3078 | + sname_len /* name itself */ | |
3079 | + 1 /* \0 */ ); | |
3080 | ||
3081 | sprintf (terminal, "%c%d:%s", typetag, sname_len, sname); | |
3082 | return terminal; | |
3083 | } | |
3084 | ||
3085 | /* Convert given value to a new complex-relocation symbol name. This | |
3086 | is a non-recursive function, since it is be called for leaf nodes | |
3087 | (plain values) in the expression tree. The caller owns the | |
3088 | returning string, so should free() it eventually. No errors. */ | |
3089 | ||
3090 | char * | |
3091 | symbol_relc_make_value (offsetT val) | |
3092 | { | |
3093 | char * terminal = xmalloc (28); /* Enough for long long. */ | |
3094 | ||
3095 | terminal[0] = '#'; | |
1a412f5f | 3096 | bfd_sprintf_vma (stdoutput, terminal + 1, val); |
280d71bf DB |
3097 | return terminal; |
3098 | } | |
3099 | ||
3100 | /* Convert given expression to a new complex-relocation symbol name. | |
3101 | This is a recursive function, since it traverses the entire given | |
3102 | expression tree. The caller owns the returning string, so should | |
3103 | free() it eventually. Errors are indicated via as_bad() and a NULL | |
3104 | return value. */ | |
3105 | ||
3106 | char * | |
3107 | symbol_relc_make_expr (expressionS * exp) | |
3108 | { | |
3109 | char * opstr = NULL; /* Operator prefix string. */ | |
3110 | int arity = 0; /* Arity of this operator. */ | |
3111 | char * operands[3]; /* Up to three operands. */ | |
3112 | char * concat_string = NULL; | |
3113 | ||
3114 | operands[0] = operands[1] = operands[2] = NULL; | |
3115 | ||
9c2799c2 | 3116 | gas_assert (exp != NULL); |
280d71bf DB |
3117 | |
3118 | /* Match known operators -> fill in opstr, arity, operands[] and fall | |
3119 | through to construct subexpression fragments; may instead return | |
3120 | string directly for leaf nodes. */ | |
3121 | ||
3122 | /* See expr.h for the meaning of all these enums. Many operators | |
3123 | have an unnatural arity (X_add_number implicitly added). The | |
3124 | conversion logic expands them to explicit "+" subexpressions. */ | |
3125 | ||
3126 | switch (exp->X_op) | |
3127 | { | |
3128 | default: | |
3129 | as_bad ("Unknown expression operator (enum %d)", exp->X_op); | |
3130 | break; | |
3131 | ||
3132 | /* Leaf nodes. */ | |
3133 | case O_constant: | |
3134 | return symbol_relc_make_value (exp->X_add_number); | |
3135 | ||
3136 | case O_symbol: | |
3137 | if (exp->X_add_number) | |
3138 | { | |
3139 | arity = 2; | |
3140 | opstr = "+"; | |
3141 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); | |
3142 | operands[1] = symbol_relc_make_value (exp->X_add_number); | |
3143 | break; | |
3144 | } | |
3145 | else | |
3146 | return symbol_relc_make_sym (exp->X_add_symbol); | |
3147 | ||
3148 | /* Helper macros for nesting nodes. */ | |
3149 | ||
3150 | #define HANDLE_XADD_OPT1(str_) \ | |
3151 | if (exp->X_add_number) \ | |
3152 | { \ | |
3153 | arity = 2; \ | |
3154 | opstr = "+:" str_; \ | |
3155 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3156 | operands[1] = symbol_relc_make_value (exp->X_add_number); \ | |
3157 | break; \ | |
3158 | } \ | |
3159 | else \ | |
3160 | { \ | |
3161 | arity = 1; \ | |
3162 | opstr = str_; \ | |
3163 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3164 | } \ | |
3165 | break | |
3166 | ||
3167 | #define HANDLE_XADD_OPT2(str_) \ | |
3168 | if (exp->X_add_number) \ | |
3169 | { \ | |
3170 | arity = 3; \ | |
3171 | opstr = "+:" str_; \ | |
3172 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3173 | operands[1] = symbol_relc_make_sym (exp->X_op_symbol); \ | |
3174 | operands[2] = symbol_relc_make_value (exp->X_add_number); \ | |
3175 | } \ | |
3176 | else \ | |
3177 | { \ | |
3178 | arity = 2; \ | |
3179 | opstr = str_; \ | |
3180 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3181 | operands[1] = symbol_relc_make_sym (exp->X_op_symbol); \ | |
3182 | } \ | |
3183 | break | |
3184 | ||
3185 | /* Nesting nodes. */ | |
3186 | ||
3187 | case O_uminus: HANDLE_XADD_OPT1 ("0-"); | |
3188 | case O_bit_not: HANDLE_XADD_OPT1 ("~"); | |
3189 | case O_logical_not: HANDLE_XADD_OPT1 ("!"); | |
3190 | case O_multiply: HANDLE_XADD_OPT2 ("*"); | |
3191 | case O_divide: HANDLE_XADD_OPT2 ("/"); | |
3192 | case O_modulus: HANDLE_XADD_OPT2 ("%"); | |
3193 | case O_left_shift: HANDLE_XADD_OPT2 ("<<"); | |
3194 | case O_right_shift: HANDLE_XADD_OPT2 (">>"); | |
3195 | case O_bit_inclusive_or: HANDLE_XADD_OPT2 ("|"); | |
3196 | case O_bit_exclusive_or: HANDLE_XADD_OPT2 ("^"); | |
3197 | case O_bit_and: HANDLE_XADD_OPT2 ("&"); | |
3198 | case O_add: HANDLE_XADD_OPT2 ("+"); | |
3199 | case O_subtract: HANDLE_XADD_OPT2 ("-"); | |
3200 | case O_eq: HANDLE_XADD_OPT2 ("=="); | |
3201 | case O_ne: HANDLE_XADD_OPT2 ("!="); | |
3202 | case O_lt: HANDLE_XADD_OPT2 ("<"); | |
3203 | case O_le: HANDLE_XADD_OPT2 ("<="); | |
3204 | case O_ge: HANDLE_XADD_OPT2 (">="); | |
3205 | case O_gt: HANDLE_XADD_OPT2 (">"); | |
3206 | case O_logical_and: HANDLE_XADD_OPT2 ("&&"); | |
3207 | case O_logical_or: HANDLE_XADD_OPT2 ("||"); | |
3208 | } | |
3209 | ||
3210 | /* Validate & reject early. */ | |
3211 | if (arity >= 1 && ((operands[0] == NULL) || (strlen (operands[0]) == 0))) | |
3212 | opstr = NULL; | |
3213 | if (arity >= 2 && ((operands[1] == NULL) || (strlen (operands[1]) == 0))) | |
3214 | opstr = NULL; | |
3215 | if (arity >= 3 && ((operands[2] == NULL) || (strlen (operands[2]) == 0))) | |
3216 | opstr = NULL; | |
3217 | ||
3218 | if (opstr == NULL) | |
3219 | concat_string = NULL; | |
3220 | else | |
3221 | { | |
3222 | /* Allocate new string; include inter-operand padding gaps etc. */ | |
3223 | concat_string = xmalloc (strlen (opstr) | |
3224 | + 1 | |
3225 | + (arity >= 1 ? (strlen (operands[0]) + 1 ) : 0) | |
3226 | + (arity >= 2 ? (strlen (operands[1]) + 1 ) : 0) | |
3227 | + (arity >= 3 ? (strlen (operands[2]) + 0 ) : 0) | |
3228 | + 1); | |
9c2799c2 | 3229 | gas_assert (concat_string != NULL); |
280d71bf DB |
3230 | |
3231 | /* Format the thing. */ | |
3232 | sprintf (concat_string, | |
3233 | (arity == 0 ? "%s" : | |
3234 | arity == 1 ? "%s:%s" : | |
3235 | arity == 2 ? "%s:%s:%s" : | |
3236 | /* arity == 3 */ "%s:%s:%s:%s"), | |
3237 | opstr, operands[0], operands[1], operands[2]); | |
3238 | } | |
3239 | ||
3240 | /* Free operand strings (not opstr). */ | |
3241 | if (arity >= 1) xfree (operands[0]); | |
3242 | if (arity >= 2) xfree (operands[1]); | |
3243 | if (arity >= 3) xfree (operands[2]); | |
3244 | ||
3245 | return concat_string; | |
3246 | } | |
3247 | ||
3248 | #endif |