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) \ | |
183 | (s->bsym == NULL \ | |
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); |
49309057 ILT |
203 | ret->lsy_marker = NULL; |
204 | ret->lsy_name = name_copy; | |
205 | ret->lsy_section = section; | |
206 | local_symbol_set_frag (ret, frag); | |
91d6fa6a | 207 | ret->lsy_value = val; |
49309057 | 208 | |
5a49b8ac | 209 | hash_jam (local_hash, name_copy, (void *) ret); |
49309057 ILT |
210 | |
211 | return ret; | |
212 | } | |
213 | ||
214 | /* Convert a local symbol into a real symbol. Note that we do not | |
215 | reclaim the space used by the local symbol. */ | |
216 | ||
217 | static symbolS * | |
74937d39 | 218 | local_symbol_convert (struct local_symbol *locsym) |
49309057 ILT |
219 | { |
220 | symbolS *ret; | |
221 | ||
9c2799c2 | 222 | gas_assert (locsym->lsy_marker == NULL); |
49309057 ILT |
223 | if (local_symbol_converted_p (locsym)) |
224 | return local_symbol_get_real_symbol (locsym); | |
225 | ||
226 | ++local_symbol_conversion_count; | |
227 | ||
bd780143 | 228 | ret = symbol_new (locsym->lsy_name, locsym->lsy_section, locsym->lsy_value, |
49309057 ILT |
229 | local_symbol_get_frag (locsym)); |
230 | ||
231 | if (local_symbol_resolved_p (locsym)) | |
232 | ret->sy_resolved = 1; | |
233 | ||
234 | /* Local symbols are always either defined or used. */ | |
235 | ret->sy_used = 1; | |
236 | ||
8c5e1ccd AO |
237 | #ifdef TC_LOCAL_SYMFIELD_CONVERT |
238 | TC_LOCAL_SYMFIELD_CONVERT (locsym, ret); | |
239 | #endif | |
240 | ||
49309057 ILT |
241 | symbol_table_insert (ret); |
242 | ||
243 | local_symbol_mark_converted (locsym); | |
244 | local_symbol_set_real_symbol (locsym, ret); | |
245 | ||
246 | hash_jam (local_hash, locsym->lsy_name, NULL); | |
247 | ||
248 | return ret; | |
249 | } | |
49309057 | 250 | \f |
a3371076 AM |
251 | static void |
252 | define_sym_at_dot (symbolS *symbolP) | |
253 | { | |
254 | symbolP->sy_frag = frag_now; | |
a3371076 AM |
255 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); |
256 | S_SET_SEGMENT (symbolP, now_seg); | |
257 | } | |
258 | ||
7c743825 KH |
259 | /* We have just seen "<name>:". |
260 | Creates a struct symbol unless it already exists. | |
261 | ||
262 | Gripes if we are redefining a symbol incompatibly (and ignores it). */ | |
252b5132 | 263 | |
252b5132 | 264 | symbolS * |
74937d39 KH |
265 | colon (/* Just seen "x:" - rattle symbols & frags. */ |
266 | const char *sym_name /* Symbol name, as a cannonical string. */ | |
267 | /* We copy this string: OK to alter later. */) | |
252b5132 | 268 | { |
7c743825 | 269 | register symbolS *symbolP; /* Symbol we are working with. */ |
252b5132 | 270 | |
7cf10893 | 271 | /* Sun local labels go out of scope whenever a non-local symbol is |
252b5132 | 272 | defined. */ |
7be1c489 AM |
273 | if (LOCAL_LABELS_DOLLAR |
274 | && !bfd_is_local_label_name (stdoutput, sym_name)) | |
275 | dollar_label_clear (); | |
252b5132 RH |
276 | |
277 | #ifndef WORKING_DOT_WORD | |
278 | if (new_broken_words) | |
279 | { | |
280 | struct broken_word *a; | |
281 | int possible_bytes; | |
282 | fragS *frag_tmp; | |
283 | char *frag_opcode; | |
284 | ||
7cf10893 NC |
285 | if (now_seg == absolute_section) |
286 | { | |
287 | as_bad (_("cannot define symbol `%s' in absolute section"), sym_name); | |
288 | return NULL; | |
289 | } | |
1d3b2b27 | 290 | |
252b5132 RH |
291 | possible_bytes = (md_short_jump_size |
292 | + new_broken_words * md_long_jump_size); | |
293 | ||
294 | frag_tmp = frag_now; | |
295 | frag_opcode = frag_var (rs_broken_word, | |
296 | possible_bytes, | |
297 | possible_bytes, | |
298 | (relax_substateT) 0, | |
299 | (symbolS *) broken_words, | |
300 | (offsetT) 0, | |
301 | NULL); | |
302 | ||
7c743825 KH |
303 | /* We want to store the pointer to where to insert the jump |
304 | table in the fr_opcode of the rs_broken_word frag. This | |
305 | requires a little hackery. */ | |
252b5132 RH |
306 | while (frag_tmp |
307 | && (frag_tmp->fr_type != rs_broken_word | |
308 | || frag_tmp->fr_opcode)) | |
309 | frag_tmp = frag_tmp->fr_next; | |
310 | know (frag_tmp); | |
311 | frag_tmp->fr_opcode = frag_opcode; | |
312 | new_broken_words = 0; | |
313 | ||
314 | for (a = broken_words; a && a->dispfrag == 0; a = a->next_broken_word) | |
315 | a->dispfrag = frag_tmp; | |
316 | } | |
317 | #endif /* WORKING_DOT_WORD */ | |
318 | ||
319 | if ((symbolP = symbol_find (sym_name)) != 0) | |
320 | { | |
06e77878 | 321 | S_CLEAR_WEAKREFR (symbolP); |
252b5132 RH |
322 | #ifdef RESOLVE_SYMBOL_REDEFINITION |
323 | if (RESOLVE_SYMBOL_REDEFINITION (symbolP)) | |
324 | return symbolP; | |
325 | #endif | |
7c743825 | 326 | /* Now check for undefined symbols. */ |
49309057 ILT |
327 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
328 | { | |
329 | struct local_symbol *locsym = (struct local_symbol *) symbolP; | |
330 | ||
331 | if (locsym->lsy_section != undefined_section | |
332 | && (local_symbol_get_frag (locsym) != frag_now | |
333 | || locsym->lsy_section != now_seg | |
bd780143 | 334 | || locsym->lsy_value != frag_now_fix ())) |
49309057 | 335 | { |
0e389e77 | 336 | as_bad (_("symbol `%s' is already defined"), sym_name); |
49309057 ILT |
337 | return symbolP; |
338 | } | |
339 | ||
340 | locsym->lsy_section = now_seg; | |
341 | local_symbol_set_frag (locsym, frag_now); | |
bd780143 | 342 | locsym->lsy_value = frag_now_fix (); |
49309057 | 343 | } |
b54788f8 | 344 | else if (!(S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
92757bc9 JB |
345 | || S_IS_COMMON (symbolP) |
346 | || S_IS_VOLATILE (symbolP)) | |
252b5132 | 347 | { |
89cdfe57 | 348 | if (S_IS_VOLATILE (symbolP)) |
92757bc9 JB |
349 | { |
350 | symbolP = symbol_clone (symbolP, 1); | |
351 | S_SET_VALUE (symbolP, 0); | |
352 | S_CLEAR_VOLATILE (symbolP); | |
353 | } | |
252b5132 RH |
354 | if (S_GET_VALUE (symbolP) == 0) |
355 | { | |
a3371076 | 356 | define_sym_at_dot (symbolP); |
252b5132 RH |
357 | #ifdef N_UNDF |
358 | know (N_UNDF == 0); | |
7c743825 | 359 | #endif /* if we have one, it better be zero. */ |
252b5132 RH |
360 | |
361 | } | |
362 | else | |
363 | { | |
7c743825 KH |
364 | /* There are still several cases to check: |
365 | ||
366 | A .comm/.lcomm symbol being redefined as initialized | |
367 | data is OK | |
368 | ||
369 | A .comm/.lcomm symbol being redefined with a larger | |
370 | size is also OK | |
371 | ||
372 | This only used to be allowed on VMS gas, but Sun cc | |
373 | on the sparc also depends on it. */ | |
252b5132 RH |
374 | |
375 | if (((!S_IS_DEBUG (symbolP) | |
376 | && (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)) | |
377 | && S_IS_EXTERNAL (symbolP)) | |
378 | || S_GET_SEGMENT (symbolP) == bss_section) | |
379 | && (now_seg == data_section | |
b3ce1bf7 | 380 | || now_seg == bss_section |
252b5132 RH |
381 | || now_seg == S_GET_SEGMENT (symbolP))) |
382 | { | |
7c743825 | 383 | /* Select which of the 2 cases this is. */ |
252b5132 RH |
384 | if (now_seg != data_section) |
385 | { | |
7c743825 KH |
386 | /* New .comm for prev .comm symbol. |
387 | ||
388 | If the new size is larger we just change its | |
389 | value. If the new size is smaller, we ignore | |
390 | this symbol. */ | |
252b5132 RH |
391 | if (S_GET_VALUE (symbolP) |
392 | < ((unsigned) frag_now_fix ())) | |
393 | { | |
394 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
395 | } | |
396 | } | |
397 | else | |
398 | { | |
399 | /* It is a .comm/.lcomm being converted to initialized | |
400 | data. */ | |
a3371076 | 401 | define_sym_at_dot (symbolP); |
252b5132 RH |
402 | } |
403 | } | |
404 | else | |
405 | { | |
4c63da97 AM |
406 | #if (!defined (OBJ_AOUT) && !defined (OBJ_MAYBE_AOUT) \ |
407 | && !defined (OBJ_BOUT) && !defined (OBJ_MAYBE_BOUT)) | |
408 | static const char *od_buf = ""; | |
252b5132 | 409 | #else |
4c63da97 AM |
410 | char od_buf[100]; |
411 | od_buf[0] = '\0'; | |
4c63da97 | 412 | if (OUTPUT_FLAVOR == bfd_target_aout_flavour) |
d1a6c242 KH |
413 | sprintf (od_buf, "%d.%d.", |
414 | S_GET_OTHER (symbolP), | |
415 | S_GET_DESC (symbolP)); | |
4c63da97 | 416 | #endif |
0e389e77 | 417 | as_bad (_("symbol `%s' is already defined as \"%s\"/%s%ld"), |
252b5132 RH |
418 | sym_name, |
419 | segment_name (S_GET_SEGMENT (symbolP)), | |
4c63da97 | 420 | od_buf, |
252b5132 | 421 | (long) S_GET_VALUE (symbolP)); |
252b5132 | 422 | } |
7c743825 | 423 | } /* if the undefined symbol has no value */ |
252b5132 RH |
424 | } |
425 | else | |
426 | { | |
7c743825 | 427 | /* Don't blow up if the definition is the same. */ |
252b5132 RH |
428 | if (!(frag_now == symbolP->sy_frag |
429 | && S_GET_VALUE (symbolP) == frag_now_fix () | |
430 | && S_GET_SEGMENT (symbolP) == now_seg)) | |
92757bc9 JB |
431 | { |
432 | as_bad (_("symbol `%s' is already defined"), sym_name); | |
433 | symbolP = symbol_clone (symbolP, 0); | |
a3371076 | 434 | define_sym_at_dot (symbolP); |
92757bc9 | 435 | } |
d4887adc | 436 | } |
252b5132 RH |
437 | |
438 | } | |
49309057 ILT |
439 | else if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, sym_name)) |
440 | { | |
441 | symbolP = (symbolS *) local_symbol_make (sym_name, now_seg, | |
442 | (valueT) frag_now_fix (), | |
443 | frag_now); | |
444 | } | |
252b5132 RH |
445 | else |
446 | { | |
447 | symbolP = symbol_new (sym_name, now_seg, (valueT) frag_now_fix (), | |
448 | frag_now); | |
252b5132 RH |
449 | |
450 | symbol_table_insert (symbolP); | |
d4887adc | 451 | } |
252b5132 RH |
452 | |
453 | if (mri_common_symbol != NULL) | |
454 | { | |
455 | /* This symbol is actually being defined within an MRI common | |
1d3b2b27 | 456 | section. This requires special handling. */ |
49309057 ILT |
457 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
458 | symbolP = local_symbol_convert ((struct local_symbol *) symbolP); | |
252b5132 RH |
459 | symbolP->sy_value.X_op = O_symbol; |
460 | symbolP->sy_value.X_add_symbol = mri_common_symbol; | |
461 | symbolP->sy_value.X_add_number = S_GET_VALUE (mri_common_symbol); | |
462 | symbolP->sy_frag = &zero_address_frag; | |
463 | S_SET_SEGMENT (symbolP, expr_section); | |
464 | symbolP->sy_mri_common = 1; | |
465 | } | |
466 | ||
467 | #ifdef tc_frob_label | |
468 | tc_frob_label (symbolP); | |
469 | #endif | |
470 | #ifdef obj_frob_label | |
471 | obj_frob_label (symbolP); | |
472 | #endif | |
473 | ||
474 | return symbolP; | |
475 | } | |
476 | \f | |
7c743825 | 477 | /* Die if we can't insert the symbol. */ |
252b5132 | 478 | |
7c743825 | 479 | void |
74937d39 | 480 | symbol_table_insert (symbolS *symbolP) |
252b5132 RH |
481 | { |
482 | register const char *error_string; | |
483 | ||
484 | know (symbolP); | |
485 | know (S_GET_NAME (symbolP)); | |
486 | ||
49309057 ILT |
487 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
488 | { | |
489 | error_string = hash_jam (local_hash, S_GET_NAME (symbolP), | |
5a49b8ac | 490 | (void *) symbolP); |
49309057 | 491 | if (error_string != NULL) |
0e389e77 | 492 | as_fatal (_("inserting \"%s\" into symbol table failed: %s"), |
49309057 ILT |
493 | S_GET_NAME (symbolP), error_string); |
494 | return; | |
495 | } | |
496 | ||
5a49b8ac | 497 | if ((error_string = hash_jam (sy_hash, S_GET_NAME (symbolP), (void *) symbolP))) |
252b5132 | 498 | { |
0e389e77 | 499 | as_fatal (_("inserting \"%s\" into symbol table failed: %s"), |
252b5132 | 500 | S_GET_NAME (symbolP), error_string); |
7c743825 KH |
501 | } /* on error */ |
502 | } | |
252b5132 | 503 | \f |
7c743825 KH |
504 | /* If a symbol name does not exist, create it as undefined, and insert |
505 | it into the symbol table. Return a pointer to it. */ | |
506 | ||
252b5132 | 507 | symbolS * |
74937d39 | 508 | symbol_find_or_make (const char *name) |
252b5132 RH |
509 | { |
510 | register symbolS *symbolP; | |
511 | ||
512 | symbolP = symbol_find (name); | |
513 | ||
514 | if (symbolP == NULL) | |
515 | { | |
49309057 ILT |
516 | if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, name)) |
517 | { | |
518 | symbolP = md_undefined_symbol ((char *) name); | |
519 | if (symbolP != NULL) | |
520 | return symbolP; | |
521 | ||
522 | symbolP = (symbolS *) local_symbol_make (name, undefined_section, | |
523 | (valueT) 0, | |
524 | &zero_address_frag); | |
525 | return symbolP; | |
526 | } | |
49309057 | 527 | |
252b5132 RH |
528 | symbolP = symbol_make (name); |
529 | ||
530 | symbol_table_insert (symbolP); | |
531 | } /* if symbol wasn't found */ | |
532 | ||
533 | return (symbolP); | |
7c743825 | 534 | } |
252b5132 RH |
535 | |
536 | symbolS * | |
74937d39 | 537 | symbol_make (const char *name) |
252b5132 RH |
538 | { |
539 | symbolS *symbolP; | |
540 | ||
7c743825 | 541 | /* Let the machine description default it, e.g. for register names. */ |
252b5132 RH |
542 | symbolP = md_undefined_symbol ((char *) name); |
543 | ||
544 | if (!symbolP) | |
545 | symbolP = symbol_new (name, undefined_section, (valueT) 0, &zero_address_frag); | |
546 | ||
547 | return (symbolP); | |
7c743825 | 548 | } |
252b5132 | 549 | |
9497f5ac NC |
550 | symbolS * |
551 | symbol_clone (symbolS *orgsymP, int replace) | |
552 | { | |
553 | symbolS *newsymP; | |
6a2b6326 | 554 | asymbol *bsymorg, *bsymnew; |
9497f5ac | 555 | |
4a826962 MR |
556 | /* Make sure we never clone the dot special symbol. */ |
557 | gas_assert (orgsymP != &dot_symbol); | |
558 | ||
9497f5ac NC |
559 | /* Running local_symbol_convert on a clone that's not the one currently |
560 | in local_hash would incorrectly replace the hash entry. Thus the | |
561 | symbol must be converted here. Note that the rest of the function | |
562 | depends on not encountering an unconverted symbol. */ | |
563 | if (LOCAL_SYMBOL_CHECK (orgsymP)) | |
564 | orgsymP = local_symbol_convert ((struct local_symbol *) orgsymP); | |
6a2b6326 | 565 | bsymorg = orgsymP->bsym; |
9497f5ac | 566 | |
1e9cc1c2 | 567 | newsymP = (symbolS *) obstack_alloc (¬es, sizeof (*newsymP)); |
9497f5ac | 568 | *newsymP = *orgsymP; |
6a2b6326 JB |
569 | bsymnew = bfd_make_empty_symbol (bfd_asymbol_bfd (bsymorg)); |
570 | if (bsymnew == NULL) | |
885afe7b | 571 | as_fatal ("bfd_make_empty_symbol: %s", bfd_errmsg (bfd_get_error ())); |
6a2b6326 JB |
572 | newsymP->bsym = bsymnew; |
573 | bsymnew->name = bsymorg->name; | |
25313d6a | 574 | bsymnew->flags = bsymorg->flags & ~BSF_SECTION_SYM; |
9d75b288 | 575 | bsymnew->section = bsymorg->section; |
6a2b6326 JB |
576 | bfd_copy_private_symbol_data (bfd_asymbol_bfd (bsymorg), bsymorg, |
577 | bfd_asymbol_bfd (bsymnew), bsymnew); | |
578 | ||
579 | #ifdef obj_symbol_clone_hook | |
580 | obj_symbol_clone_hook (newsymP, orgsymP); | |
581 | #endif | |
582 | ||
583 | #ifdef tc_symbol_clone_hook | |
584 | tc_symbol_clone_hook (newsymP, orgsymP); | |
585 | #endif | |
9497f5ac NC |
586 | |
587 | if (replace) | |
588 | { | |
589 | if (symbol_rootP == orgsymP) | |
590 | symbol_rootP = newsymP; | |
591 | else if (orgsymP->sy_previous) | |
592 | { | |
593 | orgsymP->sy_previous->sy_next = newsymP; | |
594 | orgsymP->sy_previous = NULL; | |
595 | } | |
596 | if (symbol_lastP == orgsymP) | |
597 | symbol_lastP = newsymP; | |
598 | else if (orgsymP->sy_next) | |
599 | orgsymP->sy_next->sy_previous = newsymP; | |
73e24c68 AM |
600 | |
601 | /* Symbols that won't be output can't be external. */ | |
602 | S_CLEAR_EXTERNAL (orgsymP); | |
bdf128d6 | 603 | orgsymP->sy_previous = orgsymP->sy_next = orgsymP; |
9497f5ac NC |
604 | debug_verify_symchain (symbol_rootP, symbol_lastP); |
605 | ||
606 | symbol_table_insert (newsymP); | |
607 | } | |
bdf128d6 | 608 | else |
73e24c68 AM |
609 | { |
610 | /* Symbols that won't be output can't be external. */ | |
611 | S_CLEAR_EXTERNAL (newsymP); | |
612 | newsymP->sy_previous = newsymP->sy_next = newsymP; | |
613 | } | |
9497f5ac NC |
614 | |
615 | return newsymP; | |
616 | } | |
617 | ||
618 | /* Referenced symbols, if they are forward references, need to be cloned | |
619 | (without replacing the original) so that the value of the referenced | |
620 | symbols at the point of use . */ | |
621 | ||
622 | #undef symbol_clone_if_forward_ref | |
623 | symbolS * | |
624 | symbol_clone_if_forward_ref (symbolS *symbolP, int is_forward) | |
625 | { | |
626 | if (symbolP && !LOCAL_SYMBOL_CHECK (symbolP)) | |
627 | { | |
628 | symbolS *add_symbol = symbolP->sy_value.X_add_symbol; | |
629 | symbolS *op_symbol = symbolP->sy_value.X_op_symbol; | |
630 | ||
631 | if (symbolP->sy_forward_ref) | |
632 | is_forward = 1; | |
633 | ||
634 | if (is_forward) | |
635 | { | |
636 | /* assign_symbol() clones volatile symbols; pre-existing expressions | |
637 | hold references to the original instance, but want the current | |
638 | value. Just repeat the lookup. */ | |
639 | if (add_symbol && S_IS_VOLATILE (add_symbol)) | |
640 | add_symbol = symbol_find_exact (S_GET_NAME (add_symbol)); | |
641 | if (op_symbol && S_IS_VOLATILE (op_symbol)) | |
642 | op_symbol = symbol_find_exact (S_GET_NAME (op_symbol)); | |
643 | } | |
644 | ||
645 | /* Re-using sy_resolving here, as this routine cannot get called from | |
646 | symbol resolution code. */ | |
3df4e177 MR |
647 | if ((symbolP->bsym->section == expr_section || symbolP->sy_forward_ref) |
648 | && !symbolP->sy_resolving) | |
9497f5ac NC |
649 | { |
650 | symbolP->sy_resolving = 1; | |
651 | add_symbol = symbol_clone_if_forward_ref (add_symbol, is_forward); | |
652 | op_symbol = symbol_clone_if_forward_ref (op_symbol, is_forward); | |
653 | symbolP->sy_resolving = 0; | |
654 | } | |
655 | ||
656 | if (symbolP->sy_forward_ref | |
657 | || add_symbol != symbolP->sy_value.X_add_symbol | |
658 | || op_symbol != symbolP->sy_value.X_op_symbol) | |
3df4e177 | 659 | { |
4a826962 MR |
660 | if (symbolP != &dot_symbol) |
661 | { | |
662 | symbolP = symbol_clone (symbolP, 0); | |
663 | symbolP->sy_resolving = 0; | |
664 | } | |
665 | else | |
a1facbec MR |
666 | { |
667 | symbolP = symbol_temp_new_now (); | |
668 | #ifdef tc_new_dot_label | |
669 | tc_new_dot_label (symbolP); | |
670 | #endif | |
671 | } | |
3df4e177 | 672 | } |
9497f5ac NC |
673 | |
674 | symbolP->sy_value.X_add_symbol = add_symbol; | |
675 | symbolP->sy_value.X_op_symbol = op_symbol; | |
676 | } | |
677 | ||
678 | return symbolP; | |
679 | } | |
680 | ||
b7d6ed97 | 681 | symbolS * |
74937d39 | 682 | symbol_temp_new (segT seg, valueT ofs, fragS *frag) |
b7d6ed97 | 683 | { |
756d1d01 | 684 | return symbol_new (FAKE_LABEL_NAME, seg, ofs, frag); |
b7d6ed97 RH |
685 | } |
686 | ||
687 | symbolS * | |
74937d39 | 688 | symbol_temp_new_now (void) |
b7d6ed97 RH |
689 | { |
690 | return symbol_temp_new (now_seg, frag_now_fix (), frag_now); | |
691 | } | |
692 | ||
693 | symbolS * | |
74937d39 | 694 | symbol_temp_make (void) |
b7d6ed97 | 695 | { |
756d1d01 | 696 | return symbol_make (FAKE_LABEL_NAME); |
b7d6ed97 RH |
697 | } |
698 | ||
7c743825 KH |
699 | /* Implement symbol table lookup. |
700 | In: A symbol's name as a string: '\0' can't be part of a symbol name. | |
701 | Out: NULL if the name was not in the symbol table, else the address | |
702 | of a struct symbol associated with that name. */ | |
252b5132 | 703 | |
9758f3fc | 704 | symbolS * |
74937d39 | 705 | symbol_find_exact (const char *name) |
06e77878 AO |
706 | { |
707 | return symbol_find_exact_noref (name, 0); | |
708 | } | |
709 | ||
710 | symbolS * | |
711 | symbol_find_exact_noref (const char *name, int noref) | |
9758f3fc | 712 | { |
7be1c489 | 713 | struct local_symbol *locsym; |
06e77878 | 714 | symbolS* sym; |
9758f3fc | 715 | |
7be1c489 AM |
716 | locsym = (struct local_symbol *) hash_find (local_hash, name); |
717 | if (locsym != NULL) | |
718 | return (symbolS *) locsym; | |
9758f3fc | 719 | |
06e77878 AO |
720 | sym = ((symbolS *) hash_find (sy_hash, name)); |
721 | ||
722 | /* Any references to the symbol, except for the reference in | |
723 | .weakref, must clear this flag, such that the symbol does not | |
724 | turn into a weak symbol. Note that we don't have to handle the | |
725 | local_symbol case, since a weakrefd is always promoted out of the | |
726 | local_symbol table when it is turned into a weak symbol. */ | |
727 | if (sym && ! noref) | |
728 | S_CLEAR_WEAKREFD (sym); | |
729 | ||
730 | return sym; | |
9758f3fc AM |
731 | } |
732 | ||
252b5132 | 733 | symbolS * |
91c4c449 | 734 | symbol_find (const char *name) |
06e77878 AO |
735 | { |
736 | return symbol_find_noref (name, 0); | |
737 | } | |
738 | ||
739 | symbolS * | |
740 | symbol_find_noref (const char *name, int noref) | |
252b5132 | 741 | { |
252b5132 RH |
742 | #ifdef tc_canonicalize_symbol_name |
743 | { | |
744 | char *copy; | |
03987ced | 745 | size_t len = strlen (name) + 1; |
252b5132 | 746 | |
03987ced RH |
747 | copy = (char *) alloca (len); |
748 | memcpy (copy, name, len); | |
252b5132 RH |
749 | name = tc_canonicalize_symbol_name (copy); |
750 | } | |
751 | #endif | |
752 | ||
753 | if (! symbols_case_sensitive) | |
754 | { | |
03987ced RH |
755 | char *copy; |
756 | const char *orig; | |
757 | unsigned char c; | |
758 | ||
759 | orig = name; | |
760 | name = copy = (char *) alloca (strlen (name) + 1); | |
761 | ||
762 | while ((c = *orig++) != '\0') | |
763 | { | |
3882b010 | 764 | *copy++ = TOUPPER (c); |
03987ced RH |
765 | } |
766 | *copy = '\0'; | |
252b5132 RH |
767 | } |
768 | ||
06e77878 | 769 | return symbol_find_exact_noref (name, noref); |
252b5132 RH |
770 | } |
771 | ||
7c743825 KH |
772 | /* Once upon a time, symbols were kept in a singly linked list. At |
773 | least coff needs to be able to rearrange them from time to time, for | |
774 | which a doubly linked list is much more convenient. Loic did these | |
775 | as macros which seemed dangerous to me so they're now functions. | |
776 | xoxorich. */ | |
777 | ||
778 | /* Link symbol ADDME after symbol TARGET in the chain. */ | |
252b5132 | 779 | |
7c743825 | 780 | void |
74937d39 KH |
781 | symbol_append (symbolS *addme, symbolS *target, |
782 | symbolS **rootPP, symbolS **lastPP) | |
252b5132 | 783 | { |
49309057 ILT |
784 | if (LOCAL_SYMBOL_CHECK (addme)) |
785 | abort (); | |
786 | if (target != NULL && LOCAL_SYMBOL_CHECK (target)) | |
787 | abort (); | |
788 | ||
252b5132 RH |
789 | if (target == NULL) |
790 | { | |
791 | know (*rootPP == NULL); | |
792 | know (*lastPP == NULL); | |
793 | addme->sy_next = NULL; | |
252b5132 | 794 | addme->sy_previous = NULL; |
252b5132 RH |
795 | *rootPP = addme; |
796 | *lastPP = addme; | |
797 | return; | |
7c743825 | 798 | } /* if the list is empty */ |
252b5132 RH |
799 | |
800 | if (target->sy_next != NULL) | |
801 | { | |
252b5132 | 802 | target->sy_next->sy_previous = addme; |
252b5132 RH |
803 | } |
804 | else | |
805 | { | |
806 | know (*lastPP == target); | |
807 | *lastPP = addme; | |
7c743825 | 808 | } /* if we have a next */ |
252b5132 RH |
809 | |
810 | addme->sy_next = target->sy_next; | |
811 | target->sy_next = addme; | |
252b5132 | 812 | addme->sy_previous = target; |
252b5132 RH |
813 | |
814 | debug_verify_symchain (symbol_rootP, symbol_lastP); | |
815 | } | |
816 | ||
7c743825 KH |
817 | /* Set the chain pointers of SYMBOL to null. */ |
818 | ||
819 | void | |
74937d39 | 820 | symbol_clear_list_pointers (symbolS *symbolP) |
252b5132 | 821 | { |
49309057 ILT |
822 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
823 | abort (); | |
252b5132 | 824 | symbolP->sy_next = NULL; |
252b5132 | 825 | symbolP->sy_previous = NULL; |
252b5132 RH |
826 | } |
827 | ||
7c743825 KH |
828 | /* Remove SYMBOLP from the list. */ |
829 | ||
830 | void | |
74937d39 | 831 | symbol_remove (symbolS *symbolP, symbolS **rootPP, symbolS **lastPP) |
252b5132 | 832 | { |
49309057 ILT |
833 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
834 | abort (); | |
835 | ||
252b5132 RH |
836 | if (symbolP == *rootPP) |
837 | { | |
838 | *rootPP = symbolP->sy_next; | |
7c743825 | 839 | } /* if it was the root */ |
252b5132 RH |
840 | |
841 | if (symbolP == *lastPP) | |
842 | { | |
843 | *lastPP = symbolP->sy_previous; | |
7c743825 | 844 | } /* if it was the tail */ |
252b5132 RH |
845 | |
846 | if (symbolP->sy_next != NULL) | |
847 | { | |
848 | symbolP->sy_next->sy_previous = symbolP->sy_previous; | |
7c743825 | 849 | } /* if not last */ |
252b5132 RH |
850 | |
851 | if (symbolP->sy_previous != NULL) | |
852 | { | |
853 | symbolP->sy_previous->sy_next = symbolP->sy_next; | |
7c743825 | 854 | } /* if not first */ |
252b5132 RH |
855 | |
856 | debug_verify_symchain (*rootPP, *lastPP); | |
857 | } | |
858 | ||
7c743825 KH |
859 | /* Link symbol ADDME before symbol TARGET in the chain. */ |
860 | ||
861 | void | |
74937d39 KH |
862 | symbol_insert (symbolS *addme, symbolS *target, |
863 | symbolS **rootPP, symbolS **lastPP ATTRIBUTE_UNUSED) | |
252b5132 | 864 | { |
49309057 ILT |
865 | if (LOCAL_SYMBOL_CHECK (addme)) |
866 | abort (); | |
867 | if (LOCAL_SYMBOL_CHECK (target)) | |
868 | abort (); | |
869 | ||
252b5132 RH |
870 | if (target->sy_previous != NULL) |
871 | { | |
872 | target->sy_previous->sy_next = addme; | |
873 | } | |
874 | else | |
875 | { | |
876 | know (*rootPP == target); | |
877 | *rootPP = addme; | |
7c743825 | 878 | } /* if not first */ |
252b5132 RH |
879 | |
880 | addme->sy_previous = target->sy_previous; | |
881 | target->sy_previous = addme; | |
882 | addme->sy_next = target; | |
883 | ||
884 | debug_verify_symchain (*rootPP, *lastPP); | |
885 | } | |
886 | ||
7c743825 | 887 | void |
74937d39 | 888 | verify_symbol_chain (symbolS *rootP, symbolS *lastP) |
252b5132 RH |
889 | { |
890 | symbolS *symbolP = rootP; | |
891 | ||
892 | if (symbolP == NULL) | |
893 | return; | |
894 | ||
895 | for (; symbol_next (symbolP) != NULL; symbolP = symbol_next (symbolP)) | |
896 | { | |
9c2799c2 NC |
897 | gas_assert (symbolP->bsym != NULL); |
898 | gas_assert (symbolP->sy_next->sy_previous == symbolP); | |
252b5132 RH |
899 | } |
900 | ||
9c2799c2 | 901 | gas_assert (lastP == symbolP); |
252b5132 RH |
902 | } |
903 | ||
280d71bf DB |
904 | #ifdef OBJ_COMPLEX_RELC |
905 | ||
906 | static int | |
907 | use_complex_relocs_for (symbolS * symp) | |
908 | { | |
909 | switch (symp->sy_value.X_op) | |
910 | { | |
911 | case O_constant: | |
912 | return 0; | |
913 | ||
914 | case O_symbol: | |
915 | case O_symbol_rva: | |
916 | case O_uminus: | |
917 | case O_bit_not: | |
918 | case O_logical_not: | |
919 | if ( (S_IS_COMMON (symp->sy_value.X_add_symbol) | |
920 | || S_IS_LOCAL (symp->sy_value.X_add_symbol)) | |
921 | && | |
922 | (S_IS_DEFINED (symp->sy_value.X_add_symbol) | |
923 | && S_GET_SEGMENT (symp->sy_value.X_add_symbol) != expr_section)) | |
924 | return 0; | |
925 | break; | |
926 | ||
927 | case O_multiply: | |
928 | case O_divide: | |
929 | case O_modulus: | |
930 | case O_left_shift: | |
931 | case O_right_shift: | |
932 | case O_bit_inclusive_or: | |
933 | case O_bit_or_not: | |
934 | case O_bit_exclusive_or: | |
935 | case O_bit_and: | |
936 | case O_add: | |
937 | case O_subtract: | |
938 | case O_eq: | |
939 | case O_ne: | |
940 | case O_lt: | |
941 | case O_le: | |
942 | case O_ge: | |
943 | case O_gt: | |
944 | case O_logical_and: | |
945 | case O_logical_or: | |
946 | ||
947 | if ( (S_IS_COMMON (symp->sy_value.X_add_symbol) | |
948 | || S_IS_LOCAL (symp->sy_value.X_add_symbol)) | |
949 | && | |
950 | (S_IS_COMMON (symp->sy_value.X_op_symbol) | |
951 | || S_IS_LOCAL (symp->sy_value.X_op_symbol)) | |
952 | ||
953 | && S_IS_DEFINED (symp->sy_value.X_add_symbol) | |
954 | && S_IS_DEFINED (symp->sy_value.X_op_symbol) | |
955 | && S_GET_SEGMENT (symp->sy_value.X_add_symbol) != expr_section | |
956 | && S_GET_SEGMENT (symp->sy_value.X_op_symbol) != expr_section) | |
957 | return 0; | |
958 | break; | |
959 | ||
960 | default: | |
961 | break; | |
962 | } | |
963 | return 1; | |
964 | } | |
965 | #endif | |
966 | ||
0909233e | 967 | static void |
5a0ade8b | 968 | report_op_error (symbolS *symp, symbolS *left, operatorT op, symbolS *right) |
0909233e AM |
969 | { |
970 | char *file; | |
971 | unsigned int line; | |
5a0ade8b AM |
972 | segT seg_left = left ? S_GET_SEGMENT (left) : 0; |
973 | segT seg_right = S_GET_SEGMENT (right); | |
974 | const char *opname; | |
975 | ||
976 | switch (op) | |
977 | { | |
978 | default: | |
979 | abort (); | |
980 | return; | |
981 | ||
982 | case O_uminus: opname = "-"; break; | |
983 | case O_bit_not: opname = "~"; break; | |
984 | case O_logical_not: opname = "!"; break; | |
985 | case O_multiply: opname = "*"; break; | |
986 | case O_divide: opname = "/"; break; | |
987 | case O_modulus: opname = "%"; break; | |
988 | case O_left_shift: opname = "<<"; break; | |
989 | case O_right_shift: opname = ">>"; break; | |
990 | case O_bit_inclusive_or: opname = "|"; break; | |
991 | case O_bit_or_not: opname = "|~"; break; | |
992 | case O_bit_exclusive_or: opname = "^"; break; | |
993 | case O_bit_and: opname = "&"; break; | |
994 | case O_add: opname = "+"; break; | |
995 | case O_subtract: opname = "-"; break; | |
996 | case O_eq: opname = "=="; break; | |
997 | case O_ne: opname = "!="; break; | |
998 | case O_lt: opname = "<"; break; | |
999 | case O_le: opname = "<="; break; | |
1000 | case O_ge: opname = ">="; break; | |
1001 | case O_gt: opname = ">"; break; | |
1002 | case O_logical_and: opname = "&&"; break; | |
1003 | case O_logical_or: opname = "||"; break; | |
1004 | } | |
1d3b2b27 | 1005 | |
0909233e AM |
1006 | if (expr_symbol_where (symp, &file, &line)) |
1007 | { | |
5a0ade8b | 1008 | if (left) |
0909233e | 1009 | as_bad_where (file, line, |
5a0ade8b AM |
1010 | _("invalid operands (%s and %s sections) for `%s'"), |
1011 | seg_left->name, seg_right->name, opname); | |
1012 | else | |
0909233e | 1013 | as_bad_where (file, line, |
5a0ade8b AM |
1014 | _("invalid operand (%s section) for `%s'"), |
1015 | seg_right->name, opname); | |
0909233e AM |
1016 | } |
1017 | else | |
1018 | { | |
5a0ade8b AM |
1019 | const char *sname = S_GET_NAME (symp); |
1020 | ||
1021 | if (left) | |
1022 | as_bad (_("invalid operands (%s and %s sections) for `%s' when setting `%s'"), | |
1023 | seg_left->name, seg_right->name, opname, sname); | |
1024 | else | |
1025 | as_bad (_("invalid operand (%s section) for `%s' when setting `%s'"), | |
1026 | seg_right->name, opname, sname); | |
0909233e AM |
1027 | } |
1028 | } | |
1029 | ||
252b5132 RH |
1030 | /* Resolve the value of a symbol. This is called during the final |
1031 | pass over the symbol table to resolve any symbols with complex | |
1032 | values. */ | |
1033 | ||
1034 | valueT | |
74937d39 | 1035 | resolve_symbol_value (symbolS *symp) |
252b5132 RH |
1036 | { |
1037 | int resolved; | |
03e83a45 | 1038 | valueT final_val = 0; |
252b5132 RH |
1039 | segT final_seg; |
1040 | ||
49309057 ILT |
1041 | if (LOCAL_SYMBOL_CHECK (symp)) |
1042 | { | |
1043 | struct local_symbol *locsym = (struct local_symbol *) symp; | |
1044 | ||
bd780143 | 1045 | final_val = locsym->lsy_value; |
49309057 | 1046 | if (local_symbol_resolved_p (locsym)) |
bd780143 | 1047 | return final_val; |
49309057 | 1048 | |
bd780143 | 1049 | final_val += local_symbol_get_frag (locsym)->fr_address / OCTETS_PER_BYTE; |
49309057 | 1050 | |
6386f3a7 | 1051 | if (finalize_syms) |
49309057 | 1052 | { |
bd780143 | 1053 | locsym->lsy_value = final_val; |
49309057 ILT |
1054 | local_symbol_mark_resolved (locsym); |
1055 | } | |
1056 | ||
1057 | return final_val; | |
1058 | } | |
1059 | ||
252b5132 RH |
1060 | if (symp->sy_resolved) |
1061 | { | |
1062 | if (symp->sy_value.X_op == O_constant) | |
1063 | return (valueT) symp->sy_value.X_add_number; | |
1064 | else | |
1065 | return 0; | |
1066 | } | |
1067 | ||
1068 | resolved = 0; | |
1069 | final_seg = S_GET_SEGMENT (symp); | |
1070 | ||
1071 | if (symp->sy_resolving) | |
1072 | { | |
6386f3a7 | 1073 | if (finalize_syms) |
0e389e77 | 1074 | as_bad (_("symbol definition loop encountered at `%s'"), |
7c743825 | 1075 | S_GET_NAME (symp)); |
252b5132 RH |
1076 | final_val = 0; |
1077 | resolved = 1; | |
1078 | } | |
280d71bf DB |
1079 | #ifdef OBJ_COMPLEX_RELC |
1080 | else if (final_seg == expr_section | |
1081 | && use_complex_relocs_for (symp)) | |
1082 | { | |
1083 | symbolS * relc_symbol = NULL; | |
1084 | char * relc_symbol_name = NULL; | |
1085 | ||
1086 | relc_symbol_name = symbol_relc_make_expr (& symp->sy_value); | |
1087 | ||
1088 | /* For debugging, print out conversion input & output. */ | |
1089 | #ifdef DEBUG_SYMS | |
1090 | print_expr (& symp->sy_value); | |
1091 | if (relc_symbol_name) | |
1092 | fprintf (stderr, "-> relc symbol: %s\n", relc_symbol_name); | |
1093 | #endif | |
1094 | ||
1095 | if (relc_symbol_name != NULL) | |
1096 | relc_symbol = symbol_new (relc_symbol_name, undefined_section, | |
1097 | 0, & zero_address_frag); | |
1098 | ||
1099 | if (relc_symbol == NULL) | |
1100 | { | |
1101 | as_bad (_("cannot convert expression symbol %s to complex relocation"), | |
1102 | S_GET_NAME (symp)); | |
1103 | resolved = 0; | |
1104 | } | |
1105 | else | |
1106 | { | |
1107 | symbol_table_insert (relc_symbol); | |
1108 | ||
1109 | /* S_CLEAR_EXTERNAL (relc_symbol); */ | |
1110 | if (symp->bsym->flags & BSF_SRELC) | |
1111 | relc_symbol->bsym->flags |= BSF_SRELC; | |
1112 | else | |
1113 | relc_symbol->bsym->flags |= BSF_RELC; | |
1114 | /* symp->bsym->flags |= BSF_RELC; */ | |
1115 | copy_symbol_attributes (symp, relc_symbol); | |
1116 | symp->sy_value.X_op = O_symbol; | |
1117 | symp->sy_value.X_add_symbol = relc_symbol; | |
1118 | symp->sy_value.X_add_number = 0; | |
1119 | resolved = 1; | |
1120 | } | |
1121 | ||
1122 | final_seg = undefined_section; | |
1123 | goto exit_dont_set_value; | |
1124 | } | |
1125 | #endif | |
252b5132 RH |
1126 | else |
1127 | { | |
1128 | symbolS *add_symbol, *op_symbol; | |
1129 | offsetT left, right; | |
1130 | segT seg_left, seg_right; | |
1131 | operatorT op; | |
2d034539 | 1132 | int move_seg_ok; |
252b5132 RH |
1133 | |
1134 | symp->sy_resolving = 1; | |
1135 | ||
1136 | /* Help out with CSE. */ | |
1137 | add_symbol = symp->sy_value.X_add_symbol; | |
1138 | op_symbol = symp->sy_value.X_op_symbol; | |
1139 | final_val = symp->sy_value.X_add_number; | |
1140 | op = symp->sy_value.X_op; | |
1141 | ||
1142 | switch (op) | |
1143 | { | |
1144 | default: | |
1145 | BAD_CASE (op); | |
1146 | break; | |
1147 | ||
1148 | case O_absent: | |
1149 | final_val = 0; | |
1150 | /* Fall through. */ | |
1151 | ||
1152 | case O_constant: | |
bea9907b | 1153 | final_val += symp->sy_frag->fr_address / OCTETS_PER_BYTE; |
252b5132 RH |
1154 | if (final_seg == expr_section) |
1155 | final_seg = absolute_section; | |
db557034 AM |
1156 | /* Fall through. */ |
1157 | ||
1158 | case O_register: | |
252b5132 RH |
1159 | resolved = 1; |
1160 | break; | |
1161 | ||
1162 | case O_symbol: | |
1163 | case O_symbol_rva: | |
6386f3a7 | 1164 | left = resolve_symbol_value (add_symbol); |
e0890092 AM |
1165 | seg_left = S_GET_SEGMENT (add_symbol); |
1166 | if (finalize_syms) | |
1167 | symp->sy_value.X_op_symbol = NULL; | |
252b5132 | 1168 | |
e0890092 | 1169 | do_symbol: |
06e77878 AO |
1170 | if (S_IS_WEAKREFR (symp)) |
1171 | { | |
9c2799c2 | 1172 | gas_assert (final_val == 0); |
06e77878 AO |
1173 | if (S_IS_WEAKREFR (add_symbol)) |
1174 | { | |
9c2799c2 | 1175 | gas_assert (add_symbol->sy_value.X_op == O_symbol |
06e77878 AO |
1176 | && add_symbol->sy_value.X_add_number == 0); |
1177 | add_symbol = add_symbol->sy_value.X_add_symbol; | |
9c2799c2 | 1178 | gas_assert (! S_IS_WEAKREFR (add_symbol)); |
06e77878 AO |
1179 | symp->sy_value.X_add_symbol = add_symbol; |
1180 | } | |
1181 | } | |
1182 | ||
252b5132 RH |
1183 | if (symp->sy_mri_common) |
1184 | { | |
1185 | /* This is a symbol inside an MRI common section. The | |
e0890092 AM |
1186 | relocation routines are going to handle it specially. |
1187 | Don't change the value. */ | |
49309057 | 1188 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1189 | break; |
1190 | } | |
1191 | ||
6386f3a7 | 1192 | if (finalize_syms && final_val == 0) |
49309057 ILT |
1193 | { |
1194 | if (LOCAL_SYMBOL_CHECK (add_symbol)) | |
1195 | add_symbol = local_symbol_convert ((struct local_symbol *) | |
1196 | add_symbol); | |
1197 | copy_symbol_attributes (symp, add_symbol); | |
1198 | } | |
252b5132 | 1199 | |
e0890092 AM |
1200 | /* If we have equated this symbol to an undefined or common |
1201 | symbol, keep X_op set to O_symbol, and don't change | |
1202 | X_add_number. This permits the routine which writes out | |
1203 | relocation to detect this case, and convert the | |
1204 | relocation to be against the symbol to which this symbol | |
1205 | is equated. */ | |
977cdf5a | 1206 | if (! S_IS_DEFINED (add_symbol) |
7be1c489 | 1207 | #if defined (OBJ_COFF) && defined (TE_PE) |
977cdf5a NC |
1208 | || S_IS_WEAK (add_symbol) |
1209 | #endif | |
1210 | || S_IS_COMMON (add_symbol)) | |
252b5132 | 1211 | { |
6386f3a7 | 1212 | if (finalize_syms) |
252b5132 | 1213 | { |
252b5132 RH |
1214 | symp->sy_value.X_op = O_symbol; |
1215 | symp->sy_value.X_add_symbol = add_symbol; | |
1216 | symp->sy_value.X_add_number = final_val; | |
e0890092 AM |
1217 | /* Use X_op_symbol as a flag. */ |
1218 | symp->sy_value.X_op_symbol = add_symbol; | |
252b5132 | 1219 | } |
5a0ade8b | 1220 | final_seg = seg_left; |
252b5132 | 1221 | final_val = 0; |
49309057 | 1222 | resolved = symbol_resolved_p (add_symbol); |
c89c8534 | 1223 | symp->sy_resolving = 0; |
252b5132 RH |
1224 | goto exit_dont_set_value; |
1225 | } | |
0023dd27 AM |
1226 | else if (finalize_syms |
1227 | && ((final_seg == expr_section && seg_left != expr_section) | |
1228 | || symbol_shadow_p (symp))) | |
e0890092 AM |
1229 | { |
1230 | /* If the symbol is an expression symbol, do similarly | |
1231 | as for undefined and common syms above. Handles | |
1232 | "sym +/- expr" where "expr" cannot be evaluated | |
1233 | immediately, and we want relocations to be against | |
1234 | "sym", eg. because it is weak. */ | |
1235 | symp->sy_value.X_op = O_symbol; | |
1236 | symp->sy_value.X_add_symbol = add_symbol; | |
1237 | symp->sy_value.X_add_number = final_val; | |
1238 | symp->sy_value.X_op_symbol = add_symbol; | |
1239 | final_seg = seg_left; | |
1240 | final_val += symp->sy_frag->fr_address + left; | |
1241 | resolved = symbol_resolved_p (add_symbol); | |
1242 | symp->sy_resolving = 0; | |
1243 | goto exit_dont_set_value; | |
1244 | } | |
252b5132 RH |
1245 | else |
1246 | { | |
1247 | final_val += symp->sy_frag->fr_address + left; | |
1248 | if (final_seg == expr_section || final_seg == undefined_section) | |
e0890092 | 1249 | final_seg = seg_left; |
252b5132 RH |
1250 | } |
1251 | ||
49309057 | 1252 | resolved = symbol_resolved_p (add_symbol); |
06e77878 AO |
1253 | if (S_IS_WEAKREFR (symp)) |
1254 | goto exit_dont_set_value; | |
252b5132 RH |
1255 | break; |
1256 | ||
1257 | case O_uminus: | |
1258 | case O_bit_not: | |
1259 | case O_logical_not: | |
6386f3a7 | 1260 | left = resolve_symbol_value (add_symbol); |
784b640d | 1261 | seg_left = S_GET_SEGMENT (add_symbol); |
252b5132 | 1262 | |
0909233e AM |
1263 | /* By reducing these to the relevant dyadic operator, we get |
1264 | !S -> S == 0 permitted on anything, | |
1265 | -S -> 0 - S only permitted on absolute | |
1266 | ~S -> S ^ ~0 only permitted on absolute */ | |
1267 | if (op != O_logical_not && seg_left != absolute_section | |
1268 | && finalize_syms) | |
5a0ade8b | 1269 | report_op_error (symp, NULL, op, add_symbol); |
1d3b2b27 | 1270 | |
0909233e AM |
1271 | if (final_seg == expr_section || final_seg == undefined_section) |
1272 | final_seg = absolute_section; | |
1d3b2b27 | 1273 | |
252b5132 RH |
1274 | if (op == O_uminus) |
1275 | left = -left; | |
1276 | else if (op == O_logical_not) | |
1277 | left = !left; | |
1278 | else | |
1279 | left = ~left; | |
1280 | ||
1281 | final_val += left + symp->sy_frag->fr_address; | |
252b5132 | 1282 | |
49309057 | 1283 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1284 | break; |
1285 | ||
1286 | case O_multiply: | |
1287 | case O_divide: | |
1288 | case O_modulus: | |
1289 | case O_left_shift: | |
1290 | case O_right_shift: | |
1291 | case O_bit_inclusive_or: | |
1292 | case O_bit_or_not: | |
1293 | case O_bit_exclusive_or: | |
1294 | case O_bit_and: | |
1295 | case O_add: | |
1296 | case O_subtract: | |
1297 | case O_eq: | |
1298 | case O_ne: | |
1299 | case O_lt: | |
1300 | case O_le: | |
1301 | case O_ge: | |
1302 | case O_gt: | |
1303 | case O_logical_and: | |
1304 | case O_logical_or: | |
6386f3a7 AM |
1305 | left = resolve_symbol_value (add_symbol); |
1306 | right = resolve_symbol_value (op_symbol); | |
252b5132 RH |
1307 | seg_left = S_GET_SEGMENT (add_symbol); |
1308 | seg_right = S_GET_SEGMENT (op_symbol); | |
1309 | ||
1310 | /* Simplify addition or subtraction of a constant by folding the | |
1311 | constant into X_add_number. */ | |
e0890092 | 1312 | if (op == O_add) |
252b5132 RH |
1313 | { |
1314 | if (seg_right == absolute_section) | |
1315 | { | |
e0890092 | 1316 | final_val += right; |
252b5132 RH |
1317 | goto do_symbol; |
1318 | } | |
e0890092 | 1319 | else if (seg_left == absolute_section) |
252b5132 | 1320 | { |
252b5132 RH |
1321 | final_val += left; |
1322 | add_symbol = op_symbol; | |
1323 | left = right; | |
e0890092 AM |
1324 | seg_left = seg_right; |
1325 | goto do_symbol; | |
1326 | } | |
1327 | } | |
1328 | else if (op == O_subtract) | |
1329 | { | |
1330 | if (seg_right == absolute_section) | |
1331 | { | |
1332 | final_val -= right; | |
252b5132 RH |
1333 | goto do_symbol; |
1334 | } | |
1335 | } | |
1336 | ||
2d034539 | 1337 | move_seg_ok = 1; |
e0890092 AM |
1338 | /* Equality and non-equality tests are permitted on anything. |
1339 | Subtraction, and other comparison operators are permitted if | |
1340 | both operands are in the same section. Otherwise, both | |
1341 | operands must be absolute. We already handled the case of | |
1342 | addition or subtraction of a constant above. This will | |
1343 | probably need to be changed for an object file format which | |
2d034539 NC |
1344 | supports arbitrary expressions, such as IEEE-695. */ |
1345 | if (!(seg_left == absolute_section | |
5a0ade8b | 1346 | && seg_right == absolute_section) |
0909233e AM |
1347 | && !(op == O_eq || op == O_ne) |
1348 | && !((op == O_subtract | |
1349 | || op == O_lt || op == O_le || op == O_ge || op == O_gt) | |
1350 | && seg_left == seg_right | |
1351 | && (seg_left != undefined_section | |
1352 | || add_symbol == op_symbol))) | |
2d034539 NC |
1353 | { |
1354 | /* Don't emit messages unless we're finalizing the symbol value, | |
1355 | otherwise we may get the same message multiple times. */ | |
1356 | if (finalize_syms) | |
5a0ade8b | 1357 | report_op_error (symp, add_symbol, op, op_symbol); |
2d034539 NC |
1358 | /* However do not move the symbol into the absolute section |
1359 | if it cannot currently be resolved - this would confuse | |
1360 | other parts of the assembler into believing that the | |
1361 | expression had been evaluated to zero. */ | |
1362 | else | |
1363 | move_seg_ok = 0; | |
1364 | } | |
1d3b2b27 | 1365 | |
2d034539 NC |
1366 | if (move_seg_ok |
1367 | && (final_seg == expr_section || final_seg == undefined_section)) | |
0909233e | 1368 | final_seg = absolute_section; |
252b5132 RH |
1369 | |
1370 | /* Check for division by zero. */ | |
1371 | if ((op == O_divide || op == O_modulus) && right == 0) | |
1372 | { | |
1373 | /* If seg_right is not absolute_section, then we've | |
e0890092 | 1374 | already issued a warning about using a bad symbol. */ |
6386f3a7 | 1375 | if (seg_right == absolute_section && finalize_syms) |
252b5132 RH |
1376 | { |
1377 | char *file; | |
1378 | unsigned int line; | |
1379 | ||
1380 | if (expr_symbol_where (symp, &file, &line)) | |
1381 | as_bad_where (file, line, _("division by zero")); | |
1382 | else | |
0e389e77 | 1383 | as_bad (_("division by zero when setting `%s'"), |
252b5132 RH |
1384 | S_GET_NAME (symp)); |
1385 | } | |
1386 | ||
1387 | right = 1; | |
1388 | } | |
1389 | ||
1390 | switch (symp->sy_value.X_op) | |
1391 | { | |
1392 | case O_multiply: left *= right; break; | |
1393 | case O_divide: left /= right; break; | |
1394 | case O_modulus: left %= right; break; | |
1395 | case O_left_shift: left <<= right; break; | |
1396 | case O_right_shift: left >>= right; break; | |
1397 | case O_bit_inclusive_or: left |= right; break; | |
1398 | case O_bit_or_not: left |= ~right; break; | |
1399 | case O_bit_exclusive_or: left ^= right; break; | |
1400 | case O_bit_and: left &= right; break; | |
1401 | case O_add: left += right; break; | |
1402 | case O_subtract: left -= right; break; | |
e0890092 AM |
1403 | case O_eq: |
1404 | case O_ne: | |
1405 | left = (left == right && seg_left == seg_right | |
1406 | && (seg_left != undefined_section | |
1407 | || add_symbol == op_symbol) | |
1408 | ? ~ (offsetT) 0 : 0); | |
1409 | if (symp->sy_value.X_op == O_ne) | |
1410 | left = ~left; | |
1411 | break; | |
252b5132 RH |
1412 | case O_lt: left = left < right ? ~ (offsetT) 0 : 0; break; |
1413 | case O_le: left = left <= right ? ~ (offsetT) 0 : 0; break; | |
1414 | case O_ge: left = left >= right ? ~ (offsetT) 0 : 0; break; | |
1415 | case O_gt: left = left > right ? ~ (offsetT) 0 : 0; break; | |
1416 | case O_logical_and: left = left && right; break; | |
1417 | case O_logical_or: left = left || right; break; | |
1418 | default: abort (); | |
1419 | } | |
1420 | ||
1421 | final_val += symp->sy_frag->fr_address + left; | |
1422 | if (final_seg == expr_section || final_seg == undefined_section) | |
784b640d AM |
1423 | { |
1424 | if (seg_left == undefined_section | |
1425 | || seg_right == undefined_section) | |
1426 | final_seg = undefined_section; | |
1427 | else if (seg_left == absolute_section) | |
1428 | final_seg = seg_right; | |
1429 | else | |
1430 | final_seg = seg_left; | |
1431 | } | |
49309057 ILT |
1432 | resolved = (symbol_resolved_p (add_symbol) |
1433 | && symbol_resolved_p (op_symbol)); | |
7c743825 | 1434 | break; |
252b5132 | 1435 | |
252b5132 RH |
1436 | case O_big: |
1437 | case O_illegal: | |
1438 | /* Give an error (below) if not in expr_section. We don't | |
1439 | want to worry about expr_section symbols, because they | |
1440 | are fictional (they are created as part of expression | |
1441 | resolution), and any problems may not actually mean | |
1442 | anything. */ | |
1443 | break; | |
1444 | } | |
1445 | ||
1446 | symp->sy_resolving = 0; | |
1447 | } | |
1448 | ||
6386f3a7 | 1449 | if (finalize_syms) |
05bdb37e | 1450 | S_SET_VALUE (symp, final_val); |
252b5132 | 1451 | |
05bdb37e AM |
1452 | exit_dont_set_value: |
1453 | /* Always set the segment, even if not finalizing the value. | |
1454 | The segment is used to determine whether a symbol is defined. */ | |
05bdb37e | 1455 | S_SET_SEGMENT (symp, final_seg); |
252b5132 | 1456 | |
252b5132 | 1457 | /* Don't worry if we can't resolve an expr_section symbol. */ |
6386f3a7 | 1458 | if (finalize_syms) |
252b5132 RH |
1459 | { |
1460 | if (resolved) | |
1461 | symp->sy_resolved = 1; | |
1462 | else if (S_GET_SEGMENT (symp) != expr_section) | |
1463 | { | |
0e389e77 | 1464 | as_bad (_("can't resolve value for symbol `%s'"), |
7c743825 | 1465 | S_GET_NAME (symp)); |
252b5132 RH |
1466 | symp->sy_resolved = 1; |
1467 | } | |
1468 | } | |
1469 | ||
1470 | return final_val; | |
1471 | } | |
1472 | ||
5a49b8ac | 1473 | static void resolve_local_symbol (const char *, void *); |
49309057 ILT |
1474 | |
1475 | /* A static function passed to hash_traverse. */ | |
1476 | ||
1477 | static void | |
5a49b8ac | 1478 | resolve_local_symbol (const char *key ATTRIBUTE_UNUSED, void *value) |
49309057 ILT |
1479 | { |
1480 | if (value != NULL) | |
1e9cc1c2 | 1481 | resolve_symbol_value ((symbolS *) value); |
49309057 ILT |
1482 | } |
1483 | ||
49309057 ILT |
1484 | /* Resolve all local symbols. */ |
1485 | ||
1486 | void | |
74937d39 | 1487 | resolve_local_symbol_values (void) |
49309057 | 1488 | { |
49309057 | 1489 | hash_traverse (local_hash, resolve_local_symbol); |
49309057 ILT |
1490 | } |
1491 | ||
9497f5ac NC |
1492 | /* Obtain the current value of a symbol without changing any |
1493 | sub-expressions used. */ | |
1494 | ||
1495 | int | |
2e1e12b1 | 1496 | snapshot_symbol (symbolS **symbolPP, valueT *valueP, segT *segP, fragS **fragPP) |
9497f5ac | 1497 | { |
2e1e12b1 JB |
1498 | symbolS *symbolP = *symbolPP; |
1499 | ||
9497f5ac NC |
1500 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
1501 | { | |
1502 | struct local_symbol *locsym = (struct local_symbol *) symbolP; | |
1503 | ||
1504 | *valueP = locsym->lsy_value; | |
1505 | *segP = locsym->lsy_section; | |
1506 | *fragPP = local_symbol_get_frag (locsym); | |
1507 | } | |
1508 | else | |
1509 | { | |
91d6fa6a | 1510 | expressionS exp = symbolP->sy_value; |
9497f5ac | 1511 | |
91d6fa6a | 1512 | if (!symbolP->sy_resolved && exp.X_op != O_illegal) |
9497f5ac NC |
1513 | { |
1514 | int resolved; | |
1515 | ||
1516 | if (symbolP->sy_resolving) | |
1517 | return 0; | |
1518 | symbolP->sy_resolving = 1; | |
91d6fa6a | 1519 | resolved = resolve_expression (&exp); |
9497f5ac NC |
1520 | symbolP->sy_resolving = 0; |
1521 | if (!resolved) | |
1522 | return 0; | |
1523 | ||
91d6fa6a | 1524 | switch (exp.X_op) |
9497f5ac NC |
1525 | { |
1526 | case O_constant: | |
1527 | case O_register: | |
2e1e12b1 | 1528 | if (!symbol_equated_p (symbolP)) |
9497f5ac NC |
1529 | break; |
1530 | /* Fall thru. */ | |
1531 | case O_symbol: | |
1532 | case O_symbol_rva: | |
91d6fa6a | 1533 | symbolP = exp.X_add_symbol; |
9497f5ac NC |
1534 | break; |
1535 | default: | |
1536 | return 0; | |
1537 | } | |
1538 | } | |
1539 | ||
d96eea71 | 1540 | *symbolPP = symbolP; |
91d6fa6a | 1541 | *valueP = exp.X_add_number; |
9497f5ac NC |
1542 | *segP = symbolP->bsym->section; |
1543 | *fragPP = symbolP->sy_frag; | |
1544 | ||
1545 | if (*segP == expr_section) | |
91d6fa6a | 1546 | switch (exp.X_op) |
9497f5ac NC |
1547 | { |
1548 | case O_constant: *segP = absolute_section; break; | |
1549 | case O_register: *segP = reg_section; break; | |
1550 | default: break; | |
1551 | } | |
1552 | } | |
1553 | ||
1554 | return 1; | |
1555 | } | |
1556 | ||
252b5132 RH |
1557 | /* Dollar labels look like a number followed by a dollar sign. Eg, "42$". |
1558 | They are *really* local. That is, they go out of scope whenever we see a | |
1559 | label that isn't local. Also, like fb labels, there can be multiple | |
1560 | instances of a dollar label. Therefor, we name encode each instance with | |
1561 | the instance number, keep a list of defined symbols separate from the real | |
1562 | symbol table, and we treat these buggers as a sparse array. */ | |
1563 | ||
1564 | static long *dollar_labels; | |
1565 | static long *dollar_label_instances; | |
1566 | static char *dollar_label_defines; | |
1567 | static unsigned long dollar_label_count; | |
1568 | static unsigned long dollar_label_max; | |
1569 | ||
7c743825 | 1570 | int |
74937d39 | 1571 | dollar_label_defined (long label) |
252b5132 RH |
1572 | { |
1573 | long *i; | |
1574 | ||
1575 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1576 | ||
1577 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1578 | if (*i == label) | |
1579 | return dollar_label_defines[i - dollar_labels]; | |
1580 | ||
7c743825 | 1581 | /* If we get here, label isn't defined. */ |
252b5132 | 1582 | return 0; |
7c743825 | 1583 | } |
252b5132 RH |
1584 | |
1585 | static long | |
74937d39 | 1586 | dollar_label_instance (long label) |
252b5132 RH |
1587 | { |
1588 | long *i; | |
1589 | ||
1590 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1591 | ||
1592 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1593 | if (*i == label) | |
1594 | return (dollar_label_instances[i - dollar_labels]); | |
1595 | ||
7c743825 KH |
1596 | /* If we get here, we haven't seen the label before. |
1597 | Therefore its instance count is zero. */ | |
252b5132 RH |
1598 | return 0; |
1599 | } | |
1600 | ||
7c743825 | 1601 | void |
74937d39 | 1602 | dollar_label_clear (void) |
252b5132 RH |
1603 | { |
1604 | memset (dollar_label_defines, '\0', (unsigned int) dollar_label_count); | |
1605 | } | |
1606 | ||
1607 | #define DOLLAR_LABEL_BUMP_BY 10 | |
1608 | ||
7c743825 | 1609 | void |
74937d39 | 1610 | define_dollar_label (long label) |
252b5132 RH |
1611 | { |
1612 | long *i; | |
1613 | ||
1614 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1615 | if (*i == label) | |
1616 | { | |
1617 | ++dollar_label_instances[i - dollar_labels]; | |
1618 | dollar_label_defines[i - dollar_labels] = 1; | |
1619 | return; | |
1620 | } | |
1621 | ||
7c743825 | 1622 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1623 | |
1624 | if (dollar_labels == NULL) | |
1625 | { | |
1626 | dollar_labels = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long)); | |
1627 | dollar_label_instances = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long)); | |
1e9cc1c2 | 1628 | dollar_label_defines = (char *) xmalloc (DOLLAR_LABEL_BUMP_BY); |
252b5132 RH |
1629 | dollar_label_max = DOLLAR_LABEL_BUMP_BY; |
1630 | dollar_label_count = 0; | |
1631 | } | |
1632 | else if (dollar_label_count == dollar_label_max) | |
1633 | { | |
1634 | dollar_label_max += DOLLAR_LABEL_BUMP_BY; | |
1635 | dollar_labels = (long *) xrealloc ((char *) dollar_labels, | |
1636 | dollar_label_max * sizeof (long)); | |
1637 | dollar_label_instances = (long *) xrealloc ((char *) dollar_label_instances, | |
1638 | dollar_label_max * sizeof (long)); | |
1e9cc1c2 | 1639 | dollar_label_defines = (char *) xrealloc (dollar_label_defines, dollar_label_max); |
7c743825 | 1640 | } /* if we needed to grow */ |
252b5132 RH |
1641 | |
1642 | dollar_labels[dollar_label_count] = label; | |
1643 | dollar_label_instances[dollar_label_count] = 1; | |
1644 | dollar_label_defines[dollar_label_count] = 1; | |
1645 | ++dollar_label_count; | |
1646 | } | |
1647 | ||
7c743825 KH |
1648 | /* Caller must copy returned name: we re-use the area for the next name. |
1649 | ||
1650 | The mth occurence of label n: is turned into the symbol "Ln^Am" | |
1651 | where n is the label number and m is the instance number. "L" makes | |
1652 | it a label discarded unless debugging and "^A"('\1') ensures no | |
1653 | ordinary symbol SHOULD get the same name as a local label | |
1654 | symbol. The first "4:" is "L4^A1" - the m numbers begin at 1. | |
1655 | ||
1656 | fb labels get the same treatment, except that ^B is used in place | |
1657 | of ^A. */ | |
1658 | ||
1659 | char * /* Return local label name. */ | |
74937d39 KH |
1660 | dollar_label_name (register long n, /* we just saw "n$:" : n a number. */ |
1661 | register int augend /* 0 for current instance, 1 for new instance. */) | |
252b5132 RH |
1662 | { |
1663 | long i; | |
7c743825 | 1664 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 RH |
1665 | static char symbol_name_build[24]; |
1666 | register char *p; | |
1667 | register char *q; | |
7c743825 | 1668 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1669 | |
1670 | know (n >= 0); | |
1671 | know (augend == 0 || augend == 1); | |
1672 | p = symbol_name_build; | |
f84dd1f0 NC |
1673 | #ifdef LOCAL_LABEL_PREFIX |
1674 | *p++ = LOCAL_LABEL_PREFIX; | |
1675 | #endif | |
252b5132 RH |
1676 | *p++ = 'L'; |
1677 | ||
7c743825 KH |
1678 | /* Next code just does sprintf( {}, "%d", n); */ |
1679 | /* Label number. */ | |
252b5132 RH |
1680 | q = symbol_name_temporary; |
1681 | for (*q++ = 0, i = n; i; ++q) | |
1682 | { | |
1683 | *q = i % 10 + '0'; | |
1684 | i /= 10; | |
1685 | } | |
1686 | while ((*p = *--q) != '\0') | |
1687 | ++p; | |
1688 | ||
aa257fcd | 1689 | *p++ = DOLLAR_LABEL_CHAR; /* ^A */ |
252b5132 | 1690 | |
7c743825 | 1691 | /* Instance number. */ |
252b5132 RH |
1692 | q = symbol_name_temporary; |
1693 | for (*q++ = 0, i = dollar_label_instance (n) + augend; i; ++q) | |
1694 | { | |
1695 | *q = i % 10 + '0'; | |
1696 | i /= 10; | |
1697 | } | |
1698 | while ((*p++ = *--q) != '\0');; | |
1699 | ||
7c743825 | 1700 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 RH |
1701 | return symbol_name_build; |
1702 | } | |
1703 | ||
47eebc20 | 1704 | /* Somebody else's idea of local labels. They are made by "n:" where n |
7c743825 KH |
1705 | is any decimal digit. Refer to them with |
1706 | "nb" for previous (backward) n: | |
1707 | or "nf" for next (forward) n:. | |
1708 | ||
1709 | We do a little better and let n be any number, not just a single digit, but | |
1710 | since the other guy's assembler only does ten, we treat the first ten | |
1711 | specially. | |
1712 | ||
1713 | Like someone else's assembler, we have one set of local label counters for | |
1714 | entire assembly, not one set per (sub)segment like in most assemblers. This | |
1715 | implies that one can refer to a label in another segment, and indeed some | |
1716 | crufty compilers have done just that. | |
1717 | ||
1718 | Since there could be a LOT of these things, treat them as a sparse | |
1719 | array. */ | |
252b5132 RH |
1720 | |
1721 | #define FB_LABEL_SPECIAL (10) | |
1722 | ||
1723 | static long fb_low_counter[FB_LABEL_SPECIAL]; | |
1724 | static long *fb_labels; | |
1725 | static long *fb_label_instances; | |
1726 | static long fb_label_count; | |
1727 | static long fb_label_max; | |
1728 | ||
7c743825 | 1729 | /* This must be more than FB_LABEL_SPECIAL. */ |
252b5132 RH |
1730 | #define FB_LABEL_BUMP_BY (FB_LABEL_SPECIAL + 6) |
1731 | ||
7c743825 | 1732 | static void |
74937d39 | 1733 | fb_label_init (void) |
252b5132 RH |
1734 | { |
1735 | memset ((void *) fb_low_counter, '\0', sizeof (fb_low_counter)); | |
7c743825 | 1736 | } |
252b5132 | 1737 | |
7c743825 KH |
1738 | /* Add one to the instance number of this fb label. */ |
1739 | ||
1740 | void | |
74937d39 | 1741 | fb_label_instance_inc (long label) |
252b5132 RH |
1742 | { |
1743 | long *i; | |
1744 | ||
1745 | if (label < FB_LABEL_SPECIAL) | |
1746 | { | |
1747 | ++fb_low_counter[label]; | |
1748 | return; | |
1749 | } | |
1750 | ||
1751 | if (fb_labels != NULL) | |
1752 | { | |
1753 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1754 | i < fb_labels + fb_label_count; ++i) | |
1755 | { | |
1756 | if (*i == label) | |
1757 | { | |
1758 | ++fb_label_instances[i - fb_labels]; | |
1759 | return; | |
7c743825 KH |
1760 | } /* if we find it */ |
1761 | } /* for each existing label */ | |
252b5132 RH |
1762 | } |
1763 | ||
7c743825 | 1764 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1765 | |
1766 | if (fb_labels == NULL) | |
1767 | { | |
1768 | fb_labels = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long)); | |
1769 | fb_label_instances = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long)); | |
1770 | fb_label_max = FB_LABEL_BUMP_BY; | |
1771 | fb_label_count = FB_LABEL_SPECIAL; | |
1772 | ||
1773 | } | |
1774 | else if (fb_label_count == fb_label_max) | |
1775 | { | |
1776 | fb_label_max += FB_LABEL_BUMP_BY; | |
1777 | fb_labels = (long *) xrealloc ((char *) fb_labels, | |
1778 | fb_label_max * sizeof (long)); | |
1779 | fb_label_instances = (long *) xrealloc ((char *) fb_label_instances, | |
1780 | fb_label_max * sizeof (long)); | |
7c743825 | 1781 | } /* if we needed to grow */ |
252b5132 RH |
1782 | |
1783 | fb_labels[fb_label_count] = label; | |
1784 | fb_label_instances[fb_label_count] = 1; | |
1785 | ++fb_label_count; | |
1786 | } | |
1787 | ||
7c743825 | 1788 | static long |
74937d39 | 1789 | fb_label_instance (long label) |
252b5132 RH |
1790 | { |
1791 | long *i; | |
1792 | ||
1793 | if (label < FB_LABEL_SPECIAL) | |
1794 | { | |
1795 | return (fb_low_counter[label]); | |
1796 | } | |
1797 | ||
1798 | if (fb_labels != NULL) | |
1799 | { | |
1800 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1801 | i < fb_labels + fb_label_count; ++i) | |
1802 | { | |
1803 | if (*i == label) | |
1804 | { | |
1805 | return (fb_label_instances[i - fb_labels]); | |
7c743825 KH |
1806 | } /* if we find it */ |
1807 | } /* for each existing label */ | |
252b5132 RH |
1808 | } |
1809 | ||
1810 | /* We didn't find the label, so this must be a reference to the | |
1811 | first instance. */ | |
1812 | return 0; | |
1813 | } | |
1814 | ||
7c743825 KH |
1815 | /* Caller must copy returned name: we re-use the area for the next name. |
1816 | ||
1817 | The mth occurence of label n: is turned into the symbol "Ln^Bm" | |
1818 | where n is the label number and m is the instance number. "L" makes | |
1819 | it a label discarded unless debugging and "^B"('\2') ensures no | |
1820 | ordinary symbol SHOULD get the same name as a local label | |
1821 | symbol. The first "4:" is "L4^B1" - the m numbers begin at 1. | |
1822 | ||
1823 | dollar labels get the same treatment, except that ^A is used in | |
1824 | place of ^B. */ | |
1825 | ||
1826 | char * /* Return local label name. */ | |
74937d39 KH |
1827 | fb_label_name (long n, /* We just saw "n:", "nf" or "nb" : n a number. */ |
1828 | long augend /* 0 for nb, 1 for n:, nf. */) | |
252b5132 RH |
1829 | { |
1830 | long i; | |
7c743825 | 1831 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 RH |
1832 | static char symbol_name_build[24]; |
1833 | register char *p; | |
1834 | register char *q; | |
7c743825 | 1835 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1836 | |
1837 | know (n >= 0); | |
a76903bf | 1838 | #ifdef TC_MMIX |
71ba24a1 | 1839 | know ((unsigned long) augend <= 2 /* See mmix_fb_label. */); |
a76903bf | 1840 | #else |
71ba24a1 | 1841 | know ((unsigned long) augend <= 1); |
a76903bf | 1842 | #endif |
252b5132 | 1843 | p = symbol_name_build; |
aa257fcd NC |
1844 | #ifdef LOCAL_LABEL_PREFIX |
1845 | *p++ = LOCAL_LABEL_PREFIX; | |
1846 | #endif | |
252b5132 RH |
1847 | *p++ = 'L'; |
1848 | ||
7c743825 KH |
1849 | /* Next code just does sprintf( {}, "%d", n); */ |
1850 | /* Label number. */ | |
252b5132 RH |
1851 | q = symbol_name_temporary; |
1852 | for (*q++ = 0, i = n; i; ++q) | |
1853 | { | |
1854 | *q = i % 10 + '0'; | |
1855 | i /= 10; | |
1856 | } | |
1857 | while ((*p = *--q) != '\0') | |
1858 | ++p; | |
1859 | ||
aa257fcd | 1860 | *p++ = LOCAL_LABEL_CHAR; /* ^B */ |
252b5132 | 1861 | |
7c743825 | 1862 | /* Instance number. */ |
252b5132 RH |
1863 | q = symbol_name_temporary; |
1864 | for (*q++ = 0, i = fb_label_instance (n) + augend; i; ++q) | |
1865 | { | |
1866 | *q = i % 10 + '0'; | |
1867 | i /= 10; | |
1868 | } | |
1869 | while ((*p++ = *--q) != '\0');; | |
1870 | ||
7c743825 | 1871 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 | 1872 | return (symbol_name_build); |
7c743825 | 1873 | } |
252b5132 | 1874 | |
7c743825 KH |
1875 | /* Decode name that may have been generated by foo_label_name() above. |
1876 | If the name wasn't generated by foo_label_name(), then return it | |
1877 | unaltered. This is used for error messages. */ | |
252b5132 RH |
1878 | |
1879 | char * | |
74937d39 | 1880 | decode_local_label_name (char *s) |
252b5132 RH |
1881 | { |
1882 | char *p; | |
1883 | char *symbol_decode; | |
1884 | int label_number; | |
1885 | int instance_number; | |
1886 | char *type; | |
d95767bf | 1887 | const char *message_format; |
91d6fa6a | 1888 | int lindex = 0; |
43ad3147 | 1889 | |
aa257fcd | 1890 | #ifdef LOCAL_LABEL_PREFIX |
91d6fa6a NC |
1891 | if (s[lindex] == LOCAL_LABEL_PREFIX) |
1892 | ++lindex; | |
aa257fcd | 1893 | #endif |
43ad3147 | 1894 | |
91d6fa6a | 1895 | if (s[lindex] != 'L') |
252b5132 RH |
1896 | return s; |
1897 | ||
91d6fa6a | 1898 | for (label_number = 0, p = s + lindex + 1; ISDIGIT (*p); ++p) |
252b5132 RH |
1899 | label_number = (10 * label_number) + *p - '0'; |
1900 | ||
aa257fcd | 1901 | if (*p == DOLLAR_LABEL_CHAR) |
252b5132 | 1902 | type = "dollar"; |
aa257fcd | 1903 | else if (*p == LOCAL_LABEL_CHAR) |
252b5132 RH |
1904 | type = "fb"; |
1905 | else | |
1906 | return s; | |
1907 | ||
3882b010 | 1908 | for (instance_number = 0, p++; ISDIGIT (*p); ++p) |
252b5132 RH |
1909 | instance_number = (10 * instance_number) + *p - '0'; |
1910 | ||
d95767bf | 1911 | message_format = _("\"%d\" (instance number %d of a %s label)"); |
1e9cc1c2 | 1912 | symbol_decode = (char *) obstack_alloc (¬es, strlen (message_format) + 30); |
252b5132 RH |
1913 | sprintf (symbol_decode, message_format, label_number, instance_number, type); |
1914 | ||
1915 | return symbol_decode; | |
1916 | } | |
1917 | ||
1918 | /* Get the value of a symbol. */ | |
1919 | ||
1920 | valueT | |
74937d39 | 1921 | S_GET_VALUE (symbolS *s) |
252b5132 | 1922 | { |
49309057 | 1923 | if (LOCAL_SYMBOL_CHECK (s)) |
ac62c346 | 1924 | return resolve_symbol_value (s); |
49309057 | 1925 | |
ac62c346 | 1926 | if (!s->sy_resolved) |
e46d99eb | 1927 | { |
6386f3a7 AM |
1928 | valueT val = resolve_symbol_value (s); |
1929 | if (!finalize_syms) | |
e46d99eb AM |
1930 | return val; |
1931 | } | |
06e77878 AO |
1932 | if (S_IS_WEAKREFR (s)) |
1933 | return S_GET_VALUE (s->sy_value.X_add_symbol); | |
1934 | ||
252b5132 RH |
1935 | if (s->sy_value.X_op != O_constant) |
1936 | { | |
252b5132 RH |
1937 | if (! s->sy_resolved |
1938 | || s->sy_value.X_op != O_symbol | |
1939 | || (S_IS_DEFINED (s) && ! S_IS_COMMON (s))) | |
0e389e77 | 1940 | as_bad (_("attempt to get value of unresolved symbol `%s'"), |
252b5132 | 1941 | S_GET_NAME (s)); |
252b5132 RH |
1942 | } |
1943 | return (valueT) s->sy_value.X_add_number; | |
1944 | } | |
1945 | ||
1946 | /* Set the value of a symbol. */ | |
1947 | ||
1948 | void | |
74937d39 | 1949 | S_SET_VALUE (symbolS *s, valueT val) |
252b5132 | 1950 | { |
49309057 ILT |
1951 | if (LOCAL_SYMBOL_CHECK (s)) |
1952 | { | |
bd780143 | 1953 | ((struct local_symbol *) s)->lsy_value = val; |
49309057 ILT |
1954 | return; |
1955 | } | |
1956 | ||
252b5132 RH |
1957 | s->sy_value.X_op = O_constant; |
1958 | s->sy_value.X_add_number = (offsetT) val; | |
1959 | s->sy_value.X_unsigned = 0; | |
06e77878 | 1960 | S_CLEAR_WEAKREFR (s); |
252b5132 RH |
1961 | } |
1962 | ||
1963 | void | |
74937d39 | 1964 | copy_symbol_attributes (symbolS *dest, symbolS *src) |
252b5132 | 1965 | { |
49309057 | 1966 | if (LOCAL_SYMBOL_CHECK (dest)) |
7f2f689c | 1967 | dest = local_symbol_convert ((struct local_symbol *) dest); |
49309057 | 1968 | if (LOCAL_SYMBOL_CHECK (src)) |
7f2f689c | 1969 | src = local_symbol_convert ((struct local_symbol *) src); |
49309057 | 1970 | |
252b5132 RH |
1971 | /* In an expression, transfer the settings of these flags. |
1972 | The user can override later, of course. */ | |
ad04f5ce L |
1973 | #define COPIED_SYMFLAGS (BSF_FUNCTION | BSF_OBJECT \ |
1974 | | BSF_GNU_INDIRECT_FUNCTION) | |
252b5132 | 1975 | dest->bsym->flags |= src->bsym->flags & COPIED_SYMFLAGS; |
252b5132 RH |
1976 | |
1977 | #ifdef OBJ_COPY_SYMBOL_ATTRIBUTES | |
1978 | OBJ_COPY_SYMBOL_ATTRIBUTES (dest, src); | |
1979 | #endif | |
794ba86a DJ |
1980 | |
1981 | #ifdef TC_COPY_SYMBOL_ATTRIBUTES | |
1982 | TC_COPY_SYMBOL_ATTRIBUTES (dest, src); | |
1983 | #endif | |
252b5132 RH |
1984 | } |
1985 | ||
252b5132 | 1986 | int |
74937d39 | 1987 | S_IS_FUNCTION (symbolS *s) |
252b5132 | 1988 | { |
49309057 ILT |
1989 | flagword flags; |
1990 | ||
1991 | if (LOCAL_SYMBOL_CHECK (s)) | |
1992 | return 0; | |
1993 | ||
1994 | flags = s->bsym->flags; | |
252b5132 RH |
1995 | |
1996 | return (flags & BSF_FUNCTION) != 0; | |
1997 | } | |
1998 | ||
1999 | int | |
74937d39 | 2000 | S_IS_EXTERNAL (symbolS *s) |
252b5132 | 2001 | { |
49309057 ILT |
2002 | flagword flags; |
2003 | ||
2004 | if (LOCAL_SYMBOL_CHECK (s)) | |
2005 | return 0; | |
2006 | ||
2007 | flags = s->bsym->flags; | |
252b5132 | 2008 | |
7c743825 | 2009 | /* Sanity check. */ |
252b5132 RH |
2010 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
2011 | abort (); | |
2012 | ||
2013 | return (flags & BSF_GLOBAL) != 0; | |
2014 | } | |
2015 | ||
2016 | int | |
74937d39 | 2017 | S_IS_WEAK (symbolS *s) |
252b5132 | 2018 | { |
49309057 ILT |
2019 | if (LOCAL_SYMBOL_CHECK (s)) |
2020 | return 0; | |
06e77878 AO |
2021 | /* Conceptually, a weakrefr is weak if the referenced symbol is. We |
2022 | could probably handle a WEAKREFR as always weak though. E.g., if | |
2023 | the referenced symbol has lost its weak status, there's no reason | |
2024 | to keep handling the weakrefr as if it was weak. */ | |
2025 | if (S_IS_WEAKREFR (s)) | |
2026 | return S_IS_WEAK (s->sy_value.X_add_symbol); | |
252b5132 RH |
2027 | return (s->bsym->flags & BSF_WEAK) != 0; |
2028 | } | |
2029 | ||
06e77878 AO |
2030 | int |
2031 | S_IS_WEAKREFR (symbolS *s) | |
2032 | { | |
2033 | if (LOCAL_SYMBOL_CHECK (s)) | |
2034 | return 0; | |
2035 | return s->sy_weakrefr != 0; | |
2036 | } | |
2037 | ||
2038 | int | |
2039 | S_IS_WEAKREFD (symbolS *s) | |
2040 | { | |
2041 | if (LOCAL_SYMBOL_CHECK (s)) | |
2042 | return 0; | |
2043 | return s->sy_weakrefd != 0; | |
2044 | } | |
2045 | ||
252b5132 | 2046 | int |
74937d39 | 2047 | S_IS_COMMON (symbolS *s) |
252b5132 | 2048 | { |
49309057 ILT |
2049 | if (LOCAL_SYMBOL_CHECK (s)) |
2050 | return 0; | |
252b5132 RH |
2051 | return bfd_is_com_section (s->bsym->section); |
2052 | } | |
2053 | ||
2054 | int | |
74937d39 | 2055 | S_IS_DEFINED (symbolS *s) |
252b5132 | 2056 | { |
49309057 ILT |
2057 | if (LOCAL_SYMBOL_CHECK (s)) |
2058 | return ((struct local_symbol *) s)->lsy_section != undefined_section; | |
252b5132 RH |
2059 | return s->bsym->section != undefined_section; |
2060 | } | |
2061 | ||
a161fe53 AM |
2062 | |
2063 | #ifndef EXTERN_FORCE_RELOC | |
2064 | #define EXTERN_FORCE_RELOC IS_ELF | |
2065 | #endif | |
2066 | ||
2067 | /* Return true for symbols that should not be reduced to section | |
2068 | symbols or eliminated from expressions, because they may be | |
2069 | overridden by the linker. */ | |
2070 | int | |
74937d39 | 2071 | S_FORCE_RELOC (symbolS *s, int strict) |
a161fe53 AM |
2072 | { |
2073 | if (LOCAL_SYMBOL_CHECK (s)) | |
2074 | return ((struct local_symbol *) s)->lsy_section == undefined_section; | |
2075 | ||
ae6063d4 AM |
2076 | return ((strict |
2077 | && ((s->bsym->flags & BSF_WEAK) != 0 | |
2078 | || (EXTERN_FORCE_RELOC | |
2079 | && (s->bsym->flags & BSF_GLOBAL) != 0))) | |
c969da64 | 2080 | || (s->bsym->flags & BSF_GNU_INDIRECT_FUNCTION) != 0 |
a161fe53 AM |
2081 | || s->bsym->section == undefined_section |
2082 | || bfd_is_com_section (s->bsym->section)); | |
2083 | } | |
2084 | ||
252b5132 | 2085 | int |
74937d39 | 2086 | S_IS_DEBUG (symbolS *s) |
252b5132 | 2087 | { |
49309057 ILT |
2088 | if (LOCAL_SYMBOL_CHECK (s)) |
2089 | return 0; | |
252b5132 RH |
2090 | if (s->bsym->flags & BSF_DEBUGGING) |
2091 | return 1; | |
2092 | return 0; | |
2093 | } | |
2094 | ||
2095 | int | |
74937d39 | 2096 | S_IS_LOCAL (symbolS *s) |
252b5132 | 2097 | { |
49309057 | 2098 | flagword flags; |
252b5132 RH |
2099 | const char *name; |
2100 | ||
49309057 ILT |
2101 | if (LOCAL_SYMBOL_CHECK (s)) |
2102 | return 1; | |
2103 | ||
2104 | flags = s->bsym->flags; | |
2105 | ||
7c743825 | 2106 | /* Sanity check. */ |
252b5132 RH |
2107 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
2108 | abort (); | |
2109 | ||
2110 | if (bfd_get_section (s->bsym) == reg_section) | |
2111 | return 1; | |
2112 | ||
2113 | if (flag_strip_local_absolute | |
bb82af9f NC |
2114 | /* Keep BSF_FILE symbols in order to allow debuggers to identify |
2115 | the source file even when the object file is stripped. */ | |
2116 | && (flags & (BSF_GLOBAL | BSF_FILE)) == 0 | |
252b5132 RH |
2117 | && bfd_get_section (s->bsym) == absolute_section) |
2118 | return 1; | |
2119 | ||
2120 | name = S_GET_NAME (s); | |
2121 | return (name != NULL | |
2122 | && ! S_IS_DEBUG (s) | |
aa257fcd NC |
2123 | && (strchr (name, DOLLAR_LABEL_CHAR) |
2124 | || strchr (name, LOCAL_LABEL_CHAR) | |
df58fc94 | 2125 | || TC_LABEL_IS_LOCAL (name) |
252b5132 RH |
2126 | || (! flag_keep_locals |
2127 | && (bfd_is_local_label (stdoutput, s->bsym) | |
2128 | || (flag_mri | |
2129 | && name[0] == '?' | |
2130 | && name[1] == '?'))))); | |
2131 | } | |
2132 | ||
252b5132 | 2133 | int |
74937d39 | 2134 | S_IS_STABD (symbolS *s) |
252b5132 RH |
2135 | { |
2136 | return S_GET_NAME (s) == 0; | |
2137 | } | |
2138 | ||
6885131b AM |
2139 | int |
2140 | S_CAN_BE_REDEFINED (const symbolS *s) | |
2141 | { | |
2142 | if (LOCAL_SYMBOL_CHECK (s)) | |
2143 | return (local_symbol_get_frag ((struct local_symbol *) s) | |
2144 | == &predefined_address_frag); | |
2145 | /* Permit register names to be redefined. */ | |
2146 | return s->bsym->section == reg_section; | |
2147 | } | |
2148 | ||
9497f5ac NC |
2149 | int |
2150 | S_IS_VOLATILE (const symbolS *s) | |
2151 | { | |
2152 | if (LOCAL_SYMBOL_CHECK (s)) | |
2153 | return 0; | |
2154 | return s->sy_volatile; | |
2155 | } | |
2156 | ||
2157 | int | |
2158 | S_IS_FORWARD_REF (const symbolS *s) | |
2159 | { | |
2160 | if (LOCAL_SYMBOL_CHECK (s)) | |
2161 | return 0; | |
2162 | return s->sy_forward_ref; | |
2163 | } | |
2164 | ||
9758f3fc | 2165 | const char * |
74937d39 | 2166 | S_GET_NAME (symbolS *s) |
252b5132 | 2167 | { |
49309057 ILT |
2168 | if (LOCAL_SYMBOL_CHECK (s)) |
2169 | return ((struct local_symbol *) s)->lsy_name; | |
252b5132 RH |
2170 | return s->bsym->name; |
2171 | } | |
2172 | ||
2173 | segT | |
74937d39 | 2174 | S_GET_SEGMENT (symbolS *s) |
252b5132 | 2175 | { |
49309057 ILT |
2176 | if (LOCAL_SYMBOL_CHECK (s)) |
2177 | return ((struct local_symbol *) s)->lsy_section; | |
252b5132 RH |
2178 | return s->bsym->section; |
2179 | } | |
2180 | ||
2181 | void | |
74937d39 | 2182 | S_SET_SEGMENT (symbolS *s, segT seg) |
252b5132 RH |
2183 | { |
2184 | /* Don't reassign section symbols. The direct reason is to prevent seg | |
2185 | faults assigning back to const global symbols such as *ABS*, but it | |
2186 | shouldn't happen anyway. */ | |
2187 | ||
49309057 ILT |
2188 | if (LOCAL_SYMBOL_CHECK (s)) |
2189 | { | |
2190 | if (seg == reg_section) | |
2191 | s = local_symbol_convert ((struct local_symbol *) s); | |
2192 | else | |
2193 | { | |
2194 | ((struct local_symbol *) s)->lsy_section = seg; | |
2195 | return; | |
2196 | } | |
2197 | } | |
2198 | ||
252b5132 RH |
2199 | if (s->bsym->flags & BSF_SECTION_SYM) |
2200 | { | |
2201 | if (s->bsym->section != seg) | |
7c743825 | 2202 | abort (); |
252b5132 RH |
2203 | } |
2204 | else | |
2205 | s->bsym->section = seg; | |
2206 | } | |
2207 | ||
2208 | void | |
74937d39 | 2209 | S_SET_EXTERNAL (symbolS *s) |
252b5132 | 2210 | { |
49309057 ILT |
2211 | if (LOCAL_SYMBOL_CHECK (s)) |
2212 | s = local_symbol_convert ((struct local_symbol *) s); | |
252b5132 RH |
2213 | if ((s->bsym->flags & BSF_WEAK) != 0) |
2214 | { | |
2215 | /* Let .weak override .global. */ | |
2216 | return; | |
2217 | } | |
4d7c34bf NC |
2218 | if (s->bsym->flags & BSF_SECTION_SYM) |
2219 | { | |
2220 | char * file; | |
2221 | unsigned int line; | |
d1a6c242 | 2222 | |
4d7c34bf NC |
2223 | /* Do not reassign section symbols. */ |
2224 | as_where (& file, & line); | |
2225 | as_warn_where (file, line, | |
0e389e77 | 2226 | _("section symbols are already global")); |
4d7c34bf NC |
2227 | return; |
2228 | } | |
97c4f2d9 | 2229 | #ifndef TC_GLOBAL_REGISTER_SYMBOL_OK |
d0548f34 L |
2230 | if (S_GET_SEGMENT (s) == reg_section) |
2231 | { | |
2232 | as_bad ("can't make register symbol `%s' global", | |
2233 | S_GET_NAME (s)); | |
2234 | return; | |
2235 | } | |
97c4f2d9 | 2236 | #endif |
252b5132 | 2237 | s->bsym->flags |= BSF_GLOBAL; |
7c743825 | 2238 | s->bsym->flags &= ~(BSF_LOCAL | BSF_WEAK); |
977cdf5a | 2239 | |
22ba0981 | 2240 | #ifdef TE_PE |
977cdf5a NC |
2241 | if (! an_external_name && S_GET_NAME(s)[0] != '.') |
2242 | an_external_name = S_GET_NAME (s); | |
2243 | #endif | |
252b5132 RH |
2244 | } |
2245 | ||
2246 | void | |
74937d39 | 2247 | S_CLEAR_EXTERNAL (symbolS *s) |
252b5132 | 2248 | { |
49309057 ILT |
2249 | if (LOCAL_SYMBOL_CHECK (s)) |
2250 | return; | |
252b5132 RH |
2251 | if ((s->bsym->flags & BSF_WEAK) != 0) |
2252 | { | |
2253 | /* Let .weak override. */ | |
2254 | return; | |
2255 | } | |
2256 | s->bsym->flags |= BSF_LOCAL; | |
7c743825 | 2257 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_WEAK); |
252b5132 RH |
2258 | } |
2259 | ||
2260 | void | |
74937d39 | 2261 | S_SET_WEAK (symbolS *s) |
252b5132 | 2262 | { |
49309057 ILT |
2263 | if (LOCAL_SYMBOL_CHECK (s)) |
2264 | s = local_symbol_convert ((struct local_symbol *) s); | |
06e77878 AO |
2265 | #ifdef obj_set_weak_hook |
2266 | obj_set_weak_hook (s); | |
2267 | #endif | |
252b5132 | 2268 | s->bsym->flags |= BSF_WEAK; |
7c743825 | 2269 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_LOCAL); |
252b5132 RH |
2270 | } |
2271 | ||
06e77878 AO |
2272 | void |
2273 | S_SET_WEAKREFR (symbolS *s) | |
2274 | { | |
2275 | if (LOCAL_SYMBOL_CHECK (s)) | |
2276 | s = local_symbol_convert ((struct local_symbol *) s); | |
2277 | s->sy_weakrefr = 1; | |
2278 | /* If the alias was already used, make sure we mark the target as | |
2279 | used as well, otherwise it might be dropped from the symbol | |
2280 | table. This may have unintended side effects if the alias is | |
2281 | later redirected to another symbol, such as keeping the unused | |
2282 | previous target in the symbol table. Since it will be weak, it's | |
2283 | not a big deal. */ | |
2284 | if (s->sy_used) | |
2285 | symbol_mark_used (s->sy_value.X_add_symbol); | |
2286 | } | |
2287 | ||
2288 | void | |
2289 | S_CLEAR_WEAKREFR (symbolS *s) | |
2290 | { | |
2291 | if (LOCAL_SYMBOL_CHECK (s)) | |
2292 | return; | |
2293 | s->sy_weakrefr = 0; | |
2294 | } | |
2295 | ||
2296 | void | |
2297 | S_SET_WEAKREFD (symbolS *s) | |
2298 | { | |
2299 | if (LOCAL_SYMBOL_CHECK (s)) | |
2300 | s = local_symbol_convert ((struct local_symbol *) s); | |
2301 | s->sy_weakrefd = 1; | |
2302 | S_SET_WEAK (s); | |
2303 | } | |
2304 | ||
2305 | void | |
2306 | S_CLEAR_WEAKREFD (symbolS *s) | |
2307 | { | |
2308 | if (LOCAL_SYMBOL_CHECK (s)) | |
2309 | return; | |
2310 | if (s->sy_weakrefd) | |
2311 | { | |
2312 | s->sy_weakrefd = 0; | |
2313 | /* If a weakref target symbol is weak, then it was never | |
2314 | referenced directly before, not even in a .global directive, | |
2315 | so decay it to local. If it remains undefined, it will be | |
2316 | later turned into a global, like any other undefined | |
2317 | symbol. */ | |
2318 | if (s->bsym->flags & BSF_WEAK) | |
2319 | { | |
2320 | #ifdef obj_clear_weak_hook | |
2321 | obj_clear_weak_hook (s); | |
2322 | #endif | |
2323 | s->bsym->flags &= ~BSF_WEAK; | |
2324 | s->bsym->flags |= BSF_LOCAL; | |
2325 | } | |
2326 | } | |
2327 | } | |
2328 | ||
00f7efb6 | 2329 | void |
74937d39 | 2330 | S_SET_THREAD_LOCAL (symbolS *s) |
00f7efb6 JJ |
2331 | { |
2332 | if (LOCAL_SYMBOL_CHECK (s)) | |
2333 | s = local_symbol_convert ((struct local_symbol *) s); | |
2334 | if (bfd_is_com_section (s->bsym->section) | |
2335 | && (s->bsym->flags & BSF_THREAD_LOCAL) != 0) | |
2336 | return; | |
2337 | s->bsym->flags |= BSF_THREAD_LOCAL; | |
2338 | if ((s->bsym->flags & BSF_FUNCTION) != 0) | |
2339 | as_bad (_("Accessing function `%s' as thread-local object"), | |
2340 | S_GET_NAME (s)); | |
2341 | else if (! bfd_is_und_section (s->bsym->section) | |
2342 | && (s->bsym->section->flags & SEC_THREAD_LOCAL) == 0) | |
2343 | as_bad (_("Accessing `%s' as thread-local object"), | |
2344 | S_GET_NAME (s)); | |
2345 | } | |
2346 | ||
252b5132 | 2347 | void |
977cdf5a | 2348 | S_SET_NAME (symbolS *s, const char *name) |
252b5132 | 2349 | { |
49309057 ILT |
2350 | if (LOCAL_SYMBOL_CHECK (s)) |
2351 | { | |
2352 | ((struct local_symbol *) s)->lsy_name = name; | |
2353 | return; | |
2354 | } | |
252b5132 RH |
2355 | s->bsym->name = name; |
2356 | } | |
49309057 | 2357 | |
9497f5ac NC |
2358 | void |
2359 | S_SET_VOLATILE (symbolS *s) | |
2360 | { | |
2361 | if (LOCAL_SYMBOL_CHECK (s)) | |
2362 | s = local_symbol_convert ((struct local_symbol *) s); | |
2363 | s->sy_volatile = 1; | |
2364 | } | |
2365 | ||
92757bc9 JB |
2366 | void |
2367 | S_CLEAR_VOLATILE (symbolS *s) | |
2368 | { | |
2369 | if (!LOCAL_SYMBOL_CHECK (s)) | |
2370 | s->sy_volatile = 0; | |
2371 | } | |
2372 | ||
9497f5ac NC |
2373 | void |
2374 | S_SET_FORWARD_REF (symbolS *s) | |
2375 | { | |
2376 | if (LOCAL_SYMBOL_CHECK (s)) | |
2377 | s = local_symbol_convert ((struct local_symbol *) s); | |
2378 | s->sy_forward_ref = 1; | |
2379 | } | |
2380 | ||
49309057 ILT |
2381 | /* Return the previous symbol in a chain. */ |
2382 | ||
2383 | symbolS * | |
74937d39 | 2384 | symbol_previous (symbolS *s) |
49309057 ILT |
2385 | { |
2386 | if (LOCAL_SYMBOL_CHECK (s)) | |
2387 | abort (); | |
2388 | return s->sy_previous; | |
2389 | } | |
2390 | ||
49309057 ILT |
2391 | /* Return the next symbol in a chain. */ |
2392 | ||
2393 | symbolS * | |
74937d39 | 2394 | symbol_next (symbolS *s) |
49309057 ILT |
2395 | { |
2396 | if (LOCAL_SYMBOL_CHECK (s)) | |
2397 | abort (); | |
2398 | return s->sy_next; | |
2399 | } | |
2400 | ||
2401 | /* Return a pointer to the value of a symbol as an expression. */ | |
2402 | ||
2403 | expressionS * | |
74937d39 | 2404 | symbol_get_value_expression (symbolS *s) |
49309057 ILT |
2405 | { |
2406 | if (LOCAL_SYMBOL_CHECK (s)) | |
2407 | s = local_symbol_convert ((struct local_symbol *) s); | |
2408 | return &s->sy_value; | |
2409 | } | |
2410 | ||
2411 | /* Set the value of a symbol to an expression. */ | |
2412 | ||
2413 | void | |
74937d39 | 2414 | symbol_set_value_expression (symbolS *s, const expressionS *exp) |
49309057 ILT |
2415 | { |
2416 | if (LOCAL_SYMBOL_CHECK (s)) | |
2417 | s = local_symbol_convert ((struct local_symbol *) s); | |
2418 | s->sy_value = *exp; | |
06e77878 | 2419 | S_CLEAR_WEAKREFR (s); |
49309057 ILT |
2420 | } |
2421 | ||
087d837e L |
2422 | /* Return whether 2 symbols are the same. */ |
2423 | ||
2424 | int | |
2425 | symbol_same_p (symbolS *s1, symbolS *s2) | |
2426 | { | |
2427 | if (s1->bsym == NULL | |
2428 | && local_symbol_converted_p ((struct local_symbol *) s1)) | |
2429 | s1 = local_symbol_get_real_symbol ((struct local_symbol *) s1); | |
2430 | if (s2->bsym == NULL | |
2431 | && local_symbol_converted_p ((struct local_symbol *) s2)) | |
2432 | s2 = local_symbol_get_real_symbol ((struct local_symbol *) s2); | |
2433 | return s1 == s2; | |
2434 | } | |
2435 | ||
be95a9c1 AM |
2436 | /* Return a pointer to the X_add_number component of a symbol. */ |
2437 | ||
514d955d | 2438 | offsetT * |
be95a9c1 AM |
2439 | symbol_X_add_number (symbolS *s) |
2440 | { | |
be95a9c1 | 2441 | if (LOCAL_SYMBOL_CHECK (s)) |
514d955d | 2442 | return (offsetT *) &((struct local_symbol *) s)->lsy_value; |
be95a9c1 | 2443 | |
514d955d | 2444 | return &s->sy_value.X_add_number; |
be95a9c1 AM |
2445 | } |
2446 | ||
b7d6ed97 RH |
2447 | /* Set the value of SYM to the current position in the current segment. */ |
2448 | ||
2449 | void | |
74937d39 | 2450 | symbol_set_value_now (symbolS *sym) |
b7d6ed97 RH |
2451 | { |
2452 | S_SET_SEGMENT (sym, now_seg); | |
2453 | S_SET_VALUE (sym, frag_now_fix ()); | |
2454 | symbol_set_frag (sym, frag_now); | |
2455 | } | |
2456 | ||
49309057 ILT |
2457 | /* Set the frag of a symbol. */ |
2458 | ||
2459 | void | |
74937d39 | 2460 | symbol_set_frag (symbolS *s, fragS *f) |
49309057 ILT |
2461 | { |
2462 | if (LOCAL_SYMBOL_CHECK (s)) | |
2463 | { | |
2464 | local_symbol_set_frag ((struct local_symbol *) s, f); | |
2465 | return; | |
2466 | } | |
2467 | s->sy_frag = f; | |
06e77878 | 2468 | S_CLEAR_WEAKREFR (s); |
49309057 ILT |
2469 | } |
2470 | ||
2471 | /* Return the frag of a symbol. */ | |
2472 | ||
2473 | fragS * | |
74937d39 | 2474 | symbol_get_frag (symbolS *s) |
49309057 ILT |
2475 | { |
2476 | if (LOCAL_SYMBOL_CHECK (s)) | |
2477 | return local_symbol_get_frag ((struct local_symbol *) s); | |
2478 | return s->sy_frag; | |
2479 | } | |
2480 | ||
2481 | /* Mark a symbol as having been used. */ | |
2482 | ||
2483 | void | |
74937d39 | 2484 | symbol_mark_used (symbolS *s) |
49309057 ILT |
2485 | { |
2486 | if (LOCAL_SYMBOL_CHECK (s)) | |
2487 | return; | |
2488 | s->sy_used = 1; | |
06e77878 AO |
2489 | if (S_IS_WEAKREFR (s)) |
2490 | symbol_mark_used (s->sy_value.X_add_symbol); | |
49309057 ILT |
2491 | } |
2492 | ||
2493 | /* Clear the mark of whether a symbol has been used. */ | |
2494 | ||
2495 | void | |
74937d39 | 2496 | symbol_clear_used (symbolS *s) |
49309057 ILT |
2497 | { |
2498 | if (LOCAL_SYMBOL_CHECK (s)) | |
2499 | s = local_symbol_convert ((struct local_symbol *) s); | |
2500 | s->sy_used = 0; | |
2501 | } | |
2502 | ||
2503 | /* Return whether a symbol has been used. */ | |
2504 | ||
2505 | int | |
74937d39 | 2506 | symbol_used_p (symbolS *s) |
49309057 ILT |
2507 | { |
2508 | if (LOCAL_SYMBOL_CHECK (s)) | |
2509 | return 1; | |
2510 | return s->sy_used; | |
2511 | } | |
2512 | ||
2513 | /* Mark a symbol as having been used in a reloc. */ | |
2514 | ||
2515 | void | |
74937d39 | 2516 | symbol_mark_used_in_reloc (symbolS *s) |
49309057 ILT |
2517 | { |
2518 | if (LOCAL_SYMBOL_CHECK (s)) | |
2519 | s = local_symbol_convert ((struct local_symbol *) s); | |
2520 | s->sy_used_in_reloc = 1; | |
2521 | } | |
2522 | ||
2523 | /* Clear the mark of whether a symbol has been used in a reloc. */ | |
2524 | ||
2525 | void | |
74937d39 | 2526 | symbol_clear_used_in_reloc (symbolS *s) |
49309057 ILT |
2527 | { |
2528 | if (LOCAL_SYMBOL_CHECK (s)) | |
2529 | return; | |
2530 | s->sy_used_in_reloc = 0; | |
2531 | } | |
2532 | ||
2533 | /* Return whether a symbol has been used in a reloc. */ | |
2534 | ||
2535 | int | |
74937d39 | 2536 | symbol_used_in_reloc_p (symbolS *s) |
49309057 ILT |
2537 | { |
2538 | if (LOCAL_SYMBOL_CHECK (s)) | |
2539 | return 0; | |
2540 | return s->sy_used_in_reloc; | |
2541 | } | |
2542 | ||
2543 | /* Mark a symbol as an MRI common symbol. */ | |
2544 | ||
2545 | void | |
74937d39 | 2546 | symbol_mark_mri_common (symbolS *s) |
49309057 ILT |
2547 | { |
2548 | if (LOCAL_SYMBOL_CHECK (s)) | |
2549 | s = local_symbol_convert ((struct local_symbol *) s); | |
2550 | s->sy_mri_common = 1; | |
2551 | } | |
2552 | ||
2553 | /* Clear the mark of whether a symbol is an MRI common symbol. */ | |
2554 | ||
2555 | void | |
74937d39 | 2556 | symbol_clear_mri_common (symbolS *s) |
49309057 ILT |
2557 | { |
2558 | if (LOCAL_SYMBOL_CHECK (s)) | |
2559 | return; | |
2560 | s->sy_mri_common = 0; | |
2561 | } | |
2562 | ||
2563 | /* Return whether a symbol is an MRI common symbol. */ | |
2564 | ||
2565 | int | |
74937d39 | 2566 | symbol_mri_common_p (symbolS *s) |
49309057 ILT |
2567 | { |
2568 | if (LOCAL_SYMBOL_CHECK (s)) | |
2569 | return 0; | |
2570 | return s->sy_mri_common; | |
2571 | } | |
2572 | ||
2573 | /* Mark a symbol as having been written. */ | |
2574 | ||
2575 | void | |
74937d39 | 2576 | symbol_mark_written (symbolS *s) |
49309057 ILT |
2577 | { |
2578 | if (LOCAL_SYMBOL_CHECK (s)) | |
2579 | return; | |
2580 | s->written = 1; | |
2581 | } | |
2582 | ||
2583 | /* Clear the mark of whether a symbol has been written. */ | |
2584 | ||
2585 | void | |
74937d39 | 2586 | symbol_clear_written (symbolS *s) |
49309057 ILT |
2587 | { |
2588 | if (LOCAL_SYMBOL_CHECK (s)) | |
2589 | return; | |
2590 | s->written = 0; | |
2591 | } | |
2592 | ||
2593 | /* Return whether a symbol has been written. */ | |
2594 | ||
2595 | int | |
74937d39 | 2596 | symbol_written_p (symbolS *s) |
49309057 ILT |
2597 | { |
2598 | if (LOCAL_SYMBOL_CHECK (s)) | |
2599 | return 0; | |
2600 | return s->written; | |
2601 | } | |
2602 | ||
2603 | /* Mark a symbol has having been resolved. */ | |
2604 | ||
2605 | void | |
74937d39 | 2606 | symbol_mark_resolved (symbolS *s) |
49309057 ILT |
2607 | { |
2608 | if (LOCAL_SYMBOL_CHECK (s)) | |
2609 | { | |
2610 | local_symbol_mark_resolved ((struct local_symbol *) s); | |
2611 | return; | |
2612 | } | |
2613 | s->sy_resolved = 1; | |
2614 | } | |
2615 | ||
2616 | /* Return whether a symbol has been resolved. */ | |
2617 | ||
2618 | int | |
74937d39 | 2619 | symbol_resolved_p (symbolS *s) |
49309057 ILT |
2620 | { |
2621 | if (LOCAL_SYMBOL_CHECK (s)) | |
2622 | return local_symbol_resolved_p ((struct local_symbol *) s); | |
2623 | return s->sy_resolved; | |
2624 | } | |
2625 | ||
2626 | /* Return whether a symbol is a section symbol. */ | |
2627 | ||
2628 | int | |
74937d39 | 2629 | symbol_section_p (symbolS *s ATTRIBUTE_UNUSED) |
49309057 ILT |
2630 | { |
2631 | if (LOCAL_SYMBOL_CHECK (s)) | |
2632 | return 0; | |
49309057 | 2633 | return (s->bsym->flags & BSF_SECTION_SYM) != 0; |
49309057 ILT |
2634 | } |
2635 | ||
2636 | /* Return whether a symbol is equated to another symbol. */ | |
2637 | ||
2638 | int | |
74937d39 | 2639 | symbol_equated_p (symbolS *s) |
49309057 ILT |
2640 | { |
2641 | if (LOCAL_SYMBOL_CHECK (s)) | |
2642 | return 0; | |
2643 | return s->sy_value.X_op == O_symbol; | |
2644 | } | |
2645 | ||
e0890092 AM |
2646 | /* Return whether a symbol is equated to another symbol, and should be |
2647 | treated specially when writing out relocs. */ | |
2648 | ||
2649 | int | |
74937d39 | 2650 | symbol_equated_reloc_p (symbolS *s) |
e0890092 AM |
2651 | { |
2652 | if (LOCAL_SYMBOL_CHECK (s)) | |
2653 | return 0; | |
2654 | /* X_op_symbol, normally not used for O_symbol, is set by | |
2655 | resolve_symbol_value to flag expression syms that have been | |
2656 | equated. */ | |
2657 | return (s->sy_value.X_op == O_symbol | |
7be1c489 | 2658 | #if defined (OBJ_COFF) && defined (TE_PE) |
977cdf5a NC |
2659 | && ! S_IS_WEAK (s) |
2660 | #endif | |
e0890092 AM |
2661 | && ((s->sy_resolved && s->sy_value.X_op_symbol != NULL) |
2662 | || ! S_IS_DEFINED (s) | |
2663 | || S_IS_COMMON (s))); | |
2664 | } | |
2665 | ||
49309057 ILT |
2666 | /* Return whether a symbol has a constant value. */ |
2667 | ||
2668 | int | |
74937d39 | 2669 | symbol_constant_p (symbolS *s) |
49309057 ILT |
2670 | { |
2671 | if (LOCAL_SYMBOL_CHECK (s)) | |
2672 | return 1; | |
2673 | return s->sy_value.X_op == O_constant; | |
2674 | } | |
2675 | ||
bdf128d6 JB |
2676 | /* Return whether a symbol was cloned and thus removed from the global |
2677 | symbol list. */ | |
2678 | ||
2679 | int | |
2680 | symbol_shadow_p (symbolS *s) | |
2681 | { | |
2682 | if (LOCAL_SYMBOL_CHECK (s)) | |
2683 | return 0; | |
2684 | return s->sy_next == s; | |
2685 | } | |
2686 | ||
49309057 ILT |
2687 | /* Return the BFD symbol for a symbol. */ |
2688 | ||
2689 | asymbol * | |
74937d39 | 2690 | symbol_get_bfdsym (symbolS *s) |
49309057 ILT |
2691 | { |
2692 | if (LOCAL_SYMBOL_CHECK (s)) | |
2693 | s = local_symbol_convert ((struct local_symbol *) s); | |
2694 | return s->bsym; | |
2695 | } | |
2696 | ||
2697 | /* Set the BFD symbol for a symbol. */ | |
2698 | ||
2699 | void | |
74937d39 | 2700 | symbol_set_bfdsym (symbolS *s, asymbol *bsym) |
49309057 ILT |
2701 | { |
2702 | if (LOCAL_SYMBOL_CHECK (s)) | |
2703 | s = local_symbol_convert ((struct local_symbol *) s); | |
22fe14ad NC |
2704 | /* Usually, it is harmless to reset a symbol to a BFD section |
2705 | symbol. For example, obj_elf_change_section sets the BFD symbol | |
2706 | of an old symbol with the newly created section symbol. But when | |
2707 | we have multiple sections with the same name, the newly created | |
2708 | section may have the same name as an old section. We check if the | |
2709 | old symbol has been already marked as a section symbol before | |
2710 | resetting it. */ | |
2711 | if ((s->bsym->flags & BSF_SECTION_SYM) == 0) | |
2712 | s->bsym = bsym; | |
2713 | /* else XXX - What do we do now ? */ | |
49309057 ILT |
2714 | } |
2715 | ||
49309057 ILT |
2716 | #ifdef OBJ_SYMFIELD_TYPE |
2717 | ||
2718 | /* Get a pointer to the object format information for a symbol. */ | |
2719 | ||
2720 | OBJ_SYMFIELD_TYPE * | |
74937d39 | 2721 | symbol_get_obj (symbolS *s) |
49309057 ILT |
2722 | { |
2723 | if (LOCAL_SYMBOL_CHECK (s)) | |
2724 | s = local_symbol_convert ((struct local_symbol *) s); | |
2725 | return &s->sy_obj; | |
2726 | } | |
2727 | ||
2728 | /* Set the object format information for a symbol. */ | |
2729 | ||
2730 | void | |
74937d39 | 2731 | symbol_set_obj (symbolS *s, OBJ_SYMFIELD_TYPE *o) |
49309057 ILT |
2732 | { |
2733 | if (LOCAL_SYMBOL_CHECK (s)) | |
2734 | s = local_symbol_convert ((struct local_symbol *) s); | |
2735 | s->sy_obj = *o; | |
2736 | } | |
2737 | ||
2738 | #endif /* OBJ_SYMFIELD_TYPE */ | |
2739 | ||
2740 | #ifdef TC_SYMFIELD_TYPE | |
2741 | ||
2742 | /* Get a pointer to the processor information for a symbol. */ | |
2743 | ||
2744 | TC_SYMFIELD_TYPE * | |
74937d39 | 2745 | symbol_get_tc (symbolS *s) |
49309057 ILT |
2746 | { |
2747 | if (LOCAL_SYMBOL_CHECK (s)) | |
2748 | s = local_symbol_convert ((struct local_symbol *) s); | |
2749 | return &s->sy_tc; | |
2750 | } | |
2751 | ||
2752 | /* Set the processor information for a symbol. */ | |
2753 | ||
2754 | void | |
74937d39 | 2755 | symbol_set_tc (symbolS *s, TC_SYMFIELD_TYPE *o) |
49309057 ILT |
2756 | { |
2757 | if (LOCAL_SYMBOL_CHECK (s)) | |
2758 | s = local_symbol_convert ((struct local_symbol *) s); | |
2759 | s->sy_tc = *o; | |
2760 | } | |
2761 | ||
2762 | #endif /* TC_SYMFIELD_TYPE */ | |
2763 | ||
252b5132 | 2764 | void |
74937d39 | 2765 | symbol_begin (void) |
252b5132 RH |
2766 | { |
2767 | symbol_lastP = NULL; | |
7c743825 | 2768 | symbol_rootP = NULL; /* In case we have 0 symbols (!!) */ |
252b5132 | 2769 | sy_hash = hash_new (); |
49309057 | 2770 | local_hash = hash_new (); |
252b5132 RH |
2771 | |
2772 | memset ((char *) (&abs_symbol), '\0', sizeof (abs_symbol)); | |
252b5132 RH |
2773 | #if defined (EMIT_SECTION_SYMBOLS) || !defined (RELOC_REQUIRES_SYMBOL) |
2774 | abs_symbol.bsym = bfd_abs_section.symbol; | |
252b5132 RH |
2775 | #endif |
2776 | abs_symbol.sy_value.X_op = O_constant; | |
2777 | abs_symbol.sy_frag = &zero_address_frag; | |
2778 | ||
2779 | if (LOCAL_LABELS_FB) | |
2780 | fb_label_init (); | |
2781 | } | |
4a826962 MR |
2782 | |
2783 | void | |
2784 | dot_symbol_init (void) | |
2785 | { | |
2786 | dot_symbol.bsym = bfd_make_empty_symbol (stdoutput); | |
2787 | if (dot_symbol.bsym == NULL) | |
2788 | as_fatal ("bfd_make_empty_symbol: %s", bfd_errmsg (bfd_get_error ())); | |
2789 | dot_symbol.bsym->name = "."; | |
2790 | dot_symbol.sy_forward_ref = 1; | |
2791 | dot_symbol.sy_value.X_op = O_constant; | |
2792 | } | |
252b5132 RH |
2793 | \f |
2794 | int indent_level; | |
2795 | ||
2796 | /* Maximum indent level. | |
2797 | Available for modification inside a gdb session. */ | |
87c245cc | 2798 | static int max_indent_level = 8; |
252b5132 | 2799 | |
252b5132 | 2800 | void |
74937d39 | 2801 | print_symbol_value_1 (FILE *file, symbolS *sym) |
252b5132 RH |
2802 | { |
2803 | const char *name = S_GET_NAME (sym); | |
2804 | if (!name || !name[0]) | |
2805 | name = "(unnamed)"; | |
d2df793a NC |
2806 | fprintf (file, "sym "); |
2807 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) sym)); | |
2808 | fprintf (file, " %s", name); | |
49309057 ILT |
2809 | |
2810 | if (LOCAL_SYMBOL_CHECK (sym)) | |
2811 | { | |
2812 | struct local_symbol *locsym = (struct local_symbol *) sym; | |
d2df793a NC |
2813 | |
2814 | if (local_symbol_get_frag (locsym) != & zero_address_frag | |
49309057 | 2815 | && local_symbol_get_frag (locsym) != NULL) |
d2df793a NC |
2816 | { |
2817 | fprintf (file, " frag "); | |
2818 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) local_symbol_get_frag (locsym))); | |
2819 | } | |
49309057 ILT |
2820 | if (local_symbol_resolved_p (locsym)) |
2821 | fprintf (file, " resolved"); | |
2822 | fprintf (file, " local"); | |
2823 | } | |
2824 | else | |
2825 | { | |
2826 | if (sym->sy_frag != &zero_address_frag) | |
d2df793a NC |
2827 | { |
2828 | fprintf (file, " frag "); | |
2829 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) sym->sy_frag)); | |
2830 | } | |
49309057 ILT |
2831 | if (sym->written) |
2832 | fprintf (file, " written"); | |
2833 | if (sym->sy_resolved) | |
2834 | fprintf (file, " resolved"); | |
2835 | else if (sym->sy_resolving) | |
2836 | fprintf (file, " resolving"); | |
2837 | if (sym->sy_used_in_reloc) | |
2838 | fprintf (file, " used-in-reloc"); | |
2839 | if (sym->sy_used) | |
2840 | fprintf (file, " used"); | |
2841 | if (S_IS_LOCAL (sym)) | |
2842 | fprintf (file, " local"); | |
e97b3f28 | 2843 | if (S_IS_EXTERNAL (sym)) |
49309057 | 2844 | fprintf (file, " extern"); |
06e77878 AO |
2845 | if (S_IS_WEAK (sym)) |
2846 | fprintf (file, " weak"); | |
49309057 ILT |
2847 | if (S_IS_DEBUG (sym)) |
2848 | fprintf (file, " debug"); | |
2849 | if (S_IS_DEFINED (sym)) | |
2850 | fprintf (file, " defined"); | |
2851 | } | |
06e77878 AO |
2852 | if (S_IS_WEAKREFR (sym)) |
2853 | fprintf (file, " weakrefr"); | |
2854 | if (S_IS_WEAKREFD (sym)) | |
2855 | fprintf (file, " weakrefd"); | |
252b5132 | 2856 | fprintf (file, " %s", segment_name (S_GET_SEGMENT (sym))); |
49309057 | 2857 | if (symbol_resolved_p (sym)) |
252b5132 RH |
2858 | { |
2859 | segT s = S_GET_SEGMENT (sym); | |
2860 | ||
2861 | if (s != undefined_section | |
411863a4 | 2862 | && s != expr_section) |
0af1713e | 2863 | fprintf (file, " %lx", (unsigned long) S_GET_VALUE (sym)); |
252b5132 RH |
2864 | } |
2865 | else if (indent_level < max_indent_level | |
2866 | && S_GET_SEGMENT (sym) != undefined_section) | |
2867 | { | |
2868 | indent_level++; | |
2869 | fprintf (file, "\n%*s<", indent_level * 4, ""); | |
49309057 ILT |
2870 | if (LOCAL_SYMBOL_CHECK (sym)) |
2871 | fprintf (file, "constant %lx", | |
0af1713e | 2872 | (unsigned long) ((struct local_symbol *) sym)->lsy_value); |
49309057 ILT |
2873 | else |
2874 | print_expr_1 (file, &sym->sy_value); | |
252b5132 RH |
2875 | fprintf (file, ">"); |
2876 | indent_level--; | |
2877 | } | |
2878 | fflush (file); | |
2879 | } | |
2880 | ||
2881 | void | |
74937d39 | 2882 | print_symbol_value (symbolS *sym) |
252b5132 RH |
2883 | { |
2884 | indent_level = 0; | |
2885 | print_symbol_value_1 (stderr, sym); | |
2886 | fprintf (stderr, "\n"); | |
2887 | } | |
2888 | ||
2889 | static void | |
74937d39 | 2890 | print_binary (FILE *file, const char *name, expressionS *exp) |
252b5132 RH |
2891 | { |
2892 | indent_level++; | |
2893 | fprintf (file, "%s\n%*s<", name, indent_level * 4, ""); | |
2894 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2895 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2896 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2897 | fprintf (file, ">"); | |
2898 | indent_level--; | |
2899 | } | |
2900 | ||
2901 | void | |
74937d39 | 2902 | print_expr_1 (FILE *file, expressionS *exp) |
252b5132 | 2903 | { |
d2df793a NC |
2904 | fprintf (file, "expr "); |
2905 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) exp)); | |
2906 | fprintf (file, " "); | |
252b5132 RH |
2907 | switch (exp->X_op) |
2908 | { | |
2909 | case O_illegal: | |
2910 | fprintf (file, "illegal"); | |
2911 | break; | |
2912 | case O_absent: | |
2913 | fprintf (file, "absent"); | |
2914 | break; | |
2915 | case O_constant: | |
0af1713e | 2916 | fprintf (file, "constant %lx", (unsigned long) exp->X_add_number); |
252b5132 RH |
2917 | break; |
2918 | case O_symbol: | |
2919 | indent_level++; | |
2920 | fprintf (file, "symbol\n%*s<", indent_level * 4, ""); | |
2921 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2922 | fprintf (file, ">"); | |
2923 | maybe_print_addnum: | |
2924 | if (exp->X_add_number) | |
2925 | fprintf (file, "\n%*s%lx", indent_level * 4, "", | |
0af1713e | 2926 | (unsigned long) exp->X_add_number); |
252b5132 RH |
2927 | indent_level--; |
2928 | break; | |
2929 | case O_register: | |
2930 | fprintf (file, "register #%d", (int) exp->X_add_number); | |
2931 | break; | |
2932 | case O_big: | |
2933 | fprintf (file, "big"); | |
2934 | break; | |
2935 | case O_uminus: | |
2936 | fprintf (file, "uminus -<"); | |
2937 | indent_level++; | |
2938 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2939 | fprintf (file, ">"); | |
2940 | goto maybe_print_addnum; | |
2941 | case O_bit_not: | |
2942 | fprintf (file, "bit_not"); | |
2943 | break; | |
2944 | case O_multiply: | |
2945 | print_binary (file, "multiply", exp); | |
2946 | break; | |
2947 | case O_divide: | |
2948 | print_binary (file, "divide", exp); | |
2949 | break; | |
2950 | case O_modulus: | |
2951 | print_binary (file, "modulus", exp); | |
2952 | break; | |
2953 | case O_left_shift: | |
2954 | print_binary (file, "lshift", exp); | |
2955 | break; | |
2956 | case O_right_shift: | |
2957 | print_binary (file, "rshift", exp); | |
2958 | break; | |
2959 | case O_bit_inclusive_or: | |
2960 | print_binary (file, "bit_ior", exp); | |
2961 | break; | |
2962 | case O_bit_exclusive_or: | |
2963 | print_binary (file, "bit_xor", exp); | |
2964 | break; | |
2965 | case O_bit_and: | |
2966 | print_binary (file, "bit_and", exp); | |
2967 | break; | |
2968 | case O_eq: | |
2969 | print_binary (file, "eq", exp); | |
2970 | break; | |
2971 | case O_ne: | |
2972 | print_binary (file, "ne", exp); | |
2973 | break; | |
2974 | case O_lt: | |
2975 | print_binary (file, "lt", exp); | |
2976 | break; | |
2977 | case O_le: | |
2978 | print_binary (file, "le", exp); | |
2979 | break; | |
2980 | case O_ge: | |
2981 | print_binary (file, "ge", exp); | |
2982 | break; | |
2983 | case O_gt: | |
2984 | print_binary (file, "gt", exp); | |
2985 | break; | |
2986 | case O_logical_and: | |
2987 | print_binary (file, "logical_and", exp); | |
2988 | break; | |
2989 | case O_logical_or: | |
2990 | print_binary (file, "logical_or", exp); | |
2991 | break; | |
2992 | case O_add: | |
2993 | indent_level++; | |
2994 | fprintf (file, "add\n%*s<", indent_level * 4, ""); | |
2995 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2996 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2997 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2998 | fprintf (file, ">"); | |
2999 | goto maybe_print_addnum; | |
3000 | case O_subtract: | |
3001 | indent_level++; | |
3002 | fprintf (file, "subtract\n%*s<", indent_level * 4, ""); | |
3003 | print_symbol_value_1 (file, exp->X_add_symbol); | |
3004 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
3005 | print_symbol_value_1 (file, exp->X_op_symbol); | |
3006 | fprintf (file, ">"); | |
3007 | goto maybe_print_addnum; | |
3008 | default: | |
3009 | fprintf (file, "{unknown opcode %d}", (int) exp->X_op); | |
3010 | break; | |
3011 | } | |
3012 | fflush (stdout); | |
3013 | } | |
3014 | ||
3015 | void | |
74937d39 | 3016 | print_expr (expressionS *exp) |
252b5132 RH |
3017 | { |
3018 | print_expr_1 (stderr, exp); | |
3019 | fprintf (stderr, "\n"); | |
3020 | } | |
3021 | ||
3022 | void | |
74937d39 | 3023 | symbol_print_statistics (FILE *file) |
252b5132 RH |
3024 | { |
3025 | hash_print_statistics (file, "symbol table", sy_hash); | |
49309057 ILT |
3026 | hash_print_statistics (file, "mini local symbol table", local_hash); |
3027 | fprintf (file, "%lu mini local symbols created, %lu converted\n", | |
3028 | local_symbol_count, local_symbol_conversion_count); | |
252b5132 | 3029 | } |
280d71bf DB |
3030 | |
3031 | #ifdef OBJ_COMPLEX_RELC | |
3032 | ||
3033 | /* Convert given symbol to a new complex-relocation symbol name. This | |
6f12865c | 3034 | may be a recursive function, since it might be called for non-leaf |
280d71bf | 3035 | nodes (plain symbols) in the expression tree. The caller owns the |
6f12865c AM |
3036 | returning string, so should free it eventually. Errors are |
3037 | indicated via as_bad and a NULL return value. The given symbol | |
280d71bf DB |
3038 | is marked with sy_used_in_reloc. */ |
3039 | ||
3040 | char * | |
3041 | symbol_relc_make_sym (symbolS * sym) | |
3042 | { | |
3043 | char * terminal = NULL; | |
3044 | const char * sname; | |
3045 | char typetag; | |
3046 | int sname_len; | |
3047 | ||
9c2799c2 | 3048 | gas_assert (sym != NULL); |
280d71bf DB |
3049 | |
3050 | /* Recurse to symbol_relc_make_expr if this symbol | |
3051 | is defined as an expression or a plain value. */ | |
3052 | if ( S_GET_SEGMENT (sym) == expr_section | |
3053 | || S_GET_SEGMENT (sym) == absolute_section) | |
3054 | return symbol_relc_make_expr (& sym->sy_value); | |
3055 | ||
3056 | /* This may be a "fake symbol" L0\001, referring to ".". | |
3057 | Write out a special null symbol to refer to this position. */ | |
3058 | if (! strcmp (S_GET_NAME (sym), FAKE_LABEL_NAME)) | |
3059 | return xstrdup ("."); | |
3060 | ||
3061 | /* We hope this is a plain leaf symbol. Construct the encoding | |
3062 | as {S,s}II...:CCCCCCC.... | |
3063 | where 'S'/'s' means section symbol / plain symbol | |
3064 | III is decimal for the symbol name length | |
3065 | CCC is the symbol name itself. */ | |
3066 | symbol_mark_used_in_reloc (sym); | |
3067 | ||
3068 | sname = S_GET_NAME (sym); | |
3069 | sname_len = strlen (sname); | |
3070 | typetag = symbol_section_p (sym) ? 'S' : 's'; | |
3071 | ||
3072 | terminal = xmalloc (1 /* S or s */ | |
3073 | + 8 /* sname_len in decimal */ | |
3074 | + 1 /* _ spacer */ | |
3075 | + sname_len /* name itself */ | |
3076 | + 1 /* \0 */ ); | |
3077 | ||
3078 | sprintf (terminal, "%c%d:%s", typetag, sname_len, sname); | |
3079 | return terminal; | |
3080 | } | |
3081 | ||
3082 | /* Convert given value to a new complex-relocation symbol name. This | |
3083 | is a non-recursive function, since it is be called for leaf nodes | |
3084 | (plain values) in the expression tree. The caller owns the | |
3085 | returning string, so should free() it eventually. No errors. */ | |
3086 | ||
3087 | char * | |
3088 | symbol_relc_make_value (offsetT val) | |
3089 | { | |
3090 | char * terminal = xmalloc (28); /* Enough for long long. */ | |
3091 | ||
3092 | terminal[0] = '#'; | |
1a412f5f | 3093 | bfd_sprintf_vma (stdoutput, terminal + 1, val); |
280d71bf DB |
3094 | return terminal; |
3095 | } | |
3096 | ||
3097 | /* Convert given expression to a new complex-relocation symbol name. | |
3098 | This is a recursive function, since it traverses the entire given | |
3099 | expression tree. The caller owns the returning string, so should | |
3100 | free() it eventually. Errors are indicated via as_bad() and a NULL | |
3101 | return value. */ | |
3102 | ||
3103 | char * | |
3104 | symbol_relc_make_expr (expressionS * exp) | |
3105 | { | |
3106 | char * opstr = NULL; /* Operator prefix string. */ | |
3107 | int arity = 0; /* Arity of this operator. */ | |
3108 | char * operands[3]; /* Up to three operands. */ | |
3109 | char * concat_string = NULL; | |
3110 | ||
3111 | operands[0] = operands[1] = operands[2] = NULL; | |
3112 | ||
9c2799c2 | 3113 | gas_assert (exp != NULL); |
280d71bf DB |
3114 | |
3115 | /* Match known operators -> fill in opstr, arity, operands[] and fall | |
3116 | through to construct subexpression fragments; may instead return | |
3117 | string directly for leaf nodes. */ | |
3118 | ||
3119 | /* See expr.h for the meaning of all these enums. Many operators | |
3120 | have an unnatural arity (X_add_number implicitly added). The | |
3121 | conversion logic expands them to explicit "+" subexpressions. */ | |
3122 | ||
3123 | switch (exp->X_op) | |
3124 | { | |
3125 | default: | |
3126 | as_bad ("Unknown expression operator (enum %d)", exp->X_op); | |
3127 | break; | |
3128 | ||
3129 | /* Leaf nodes. */ | |
3130 | case O_constant: | |
3131 | return symbol_relc_make_value (exp->X_add_number); | |
3132 | ||
3133 | case O_symbol: | |
3134 | if (exp->X_add_number) | |
3135 | { | |
3136 | arity = 2; | |
3137 | opstr = "+"; | |
3138 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); | |
3139 | operands[1] = symbol_relc_make_value (exp->X_add_number); | |
3140 | break; | |
3141 | } | |
3142 | else | |
3143 | return symbol_relc_make_sym (exp->X_add_symbol); | |
3144 | ||
3145 | /* Helper macros for nesting nodes. */ | |
3146 | ||
3147 | #define HANDLE_XADD_OPT1(str_) \ | |
3148 | if (exp->X_add_number) \ | |
3149 | { \ | |
3150 | arity = 2; \ | |
3151 | opstr = "+:" str_; \ | |
3152 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3153 | operands[1] = symbol_relc_make_value (exp->X_add_number); \ | |
3154 | break; \ | |
3155 | } \ | |
3156 | else \ | |
3157 | { \ | |
3158 | arity = 1; \ | |
3159 | opstr = str_; \ | |
3160 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3161 | } \ | |
3162 | break | |
3163 | ||
3164 | #define HANDLE_XADD_OPT2(str_) \ | |
3165 | if (exp->X_add_number) \ | |
3166 | { \ | |
3167 | arity = 3; \ | |
3168 | opstr = "+:" str_; \ | |
3169 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3170 | operands[1] = symbol_relc_make_sym (exp->X_op_symbol); \ | |
3171 | operands[2] = symbol_relc_make_value (exp->X_add_number); \ | |
3172 | } \ | |
3173 | else \ | |
3174 | { \ | |
3175 | arity = 2; \ | |
3176 | opstr = str_; \ | |
3177 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3178 | operands[1] = symbol_relc_make_sym (exp->X_op_symbol); \ | |
3179 | } \ | |
3180 | break | |
3181 | ||
3182 | /* Nesting nodes. */ | |
3183 | ||
3184 | case O_uminus: HANDLE_XADD_OPT1 ("0-"); | |
3185 | case O_bit_not: HANDLE_XADD_OPT1 ("~"); | |
3186 | case O_logical_not: HANDLE_XADD_OPT1 ("!"); | |
3187 | case O_multiply: HANDLE_XADD_OPT2 ("*"); | |
3188 | case O_divide: HANDLE_XADD_OPT2 ("/"); | |
3189 | case O_modulus: HANDLE_XADD_OPT2 ("%"); | |
3190 | case O_left_shift: HANDLE_XADD_OPT2 ("<<"); | |
3191 | case O_right_shift: HANDLE_XADD_OPT2 (">>"); | |
3192 | case O_bit_inclusive_or: HANDLE_XADD_OPT2 ("|"); | |
3193 | case O_bit_exclusive_or: HANDLE_XADD_OPT2 ("^"); | |
3194 | case O_bit_and: HANDLE_XADD_OPT2 ("&"); | |
3195 | case O_add: HANDLE_XADD_OPT2 ("+"); | |
3196 | case O_subtract: HANDLE_XADD_OPT2 ("-"); | |
3197 | case O_eq: HANDLE_XADD_OPT2 ("=="); | |
3198 | case O_ne: HANDLE_XADD_OPT2 ("!="); | |
3199 | case O_lt: HANDLE_XADD_OPT2 ("<"); | |
3200 | case O_le: HANDLE_XADD_OPT2 ("<="); | |
3201 | case O_ge: HANDLE_XADD_OPT2 (">="); | |
3202 | case O_gt: HANDLE_XADD_OPT2 (">"); | |
3203 | case O_logical_and: HANDLE_XADD_OPT2 ("&&"); | |
3204 | case O_logical_or: HANDLE_XADD_OPT2 ("||"); | |
3205 | } | |
3206 | ||
3207 | /* Validate & reject early. */ | |
3208 | if (arity >= 1 && ((operands[0] == NULL) || (strlen (operands[0]) == 0))) | |
3209 | opstr = NULL; | |
3210 | if (arity >= 2 && ((operands[1] == NULL) || (strlen (operands[1]) == 0))) | |
3211 | opstr = NULL; | |
3212 | if (arity >= 3 && ((operands[2] == NULL) || (strlen (operands[2]) == 0))) | |
3213 | opstr = NULL; | |
3214 | ||
3215 | if (opstr == NULL) | |
3216 | concat_string = NULL; | |
3217 | else | |
3218 | { | |
3219 | /* Allocate new string; include inter-operand padding gaps etc. */ | |
3220 | concat_string = xmalloc (strlen (opstr) | |
3221 | + 1 | |
3222 | + (arity >= 1 ? (strlen (operands[0]) + 1 ) : 0) | |
3223 | + (arity >= 2 ? (strlen (operands[1]) + 1 ) : 0) | |
3224 | + (arity >= 3 ? (strlen (operands[2]) + 0 ) : 0) | |
3225 | + 1); | |
9c2799c2 | 3226 | gas_assert (concat_string != NULL); |
280d71bf DB |
3227 | |
3228 | /* Format the thing. */ | |
3229 | sprintf (concat_string, | |
3230 | (arity == 0 ? "%s" : | |
3231 | arity == 1 ? "%s:%s" : | |
3232 | arity == 2 ? "%s:%s:%s" : | |
3233 | /* arity == 3 */ "%s:%s:%s:%s"), | |
3234 | opstr, operands[0], operands[1], operands[2]); | |
3235 | } | |
3236 | ||
3237 | /* Free operand strings (not opstr). */ | |
3238 | if (arity >= 1) xfree (operands[0]); | |
3239 | if (arity >= 2) xfree (operands[1]); | |
3240 | if (arity >= 3) xfree (operands[2]); | |
3241 | ||
3242 | return concat_string; | |
3243 | } | |
3244 | ||
3245 | #endif |