1 /* symbols.c -symbol table-
2 Copyright (C) 1987, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 2000
3 Free Software Foundation, Inc.
5 This file is part of GAS, the GNU Assembler.
7 GAS is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GAS is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GAS; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
22 /* #define DEBUG_SYMS / * to debug symbol list maintenance */
28 #include "obstack.h" /* For "symbols.h" */
31 #include "struc-symbol.h"
33 /* This is non-zero if symbols are case sensitive, which is the
35 int symbols_case_sensitive = 1;
37 #ifndef WORKING_DOT_WORD
38 extern int new_broken_words;
41 /* symbol-name => struct symbol pointer */
42 static struct hash_control *sy_hash;
44 /* Table of local symbols. */
45 static struct hash_control *local_hash;
47 /* Below are commented in "symbols.h". */
48 symbolS *symbol_rootP;
49 symbolS *symbol_lastP;
53 #define debug_verify_symchain verify_symbol_chain
55 #define debug_verify_symchain(root, last) ((void) 0)
60 static void fb_label_init PARAMS ((void));
61 static long dollar_label_instance PARAMS ((long));
62 static long fb_label_instance PARAMS ((long));
64 static void print_binary PARAMS ((FILE *, const char *, expressionS *));
68 Return a pointer to a new symbol. Die if we can't make a new
69 symbol. Fill in the symbol's values. Add symbol to end of symbol
72 This function should be called in the general case of creating a
73 symbol. However, if the output file symbol table has already been
74 set, and you are certain that this symbol won't be wanted in the
75 output file, you can call symbol_create. */
78 symbol_new (name, segment, valu, frag)
84 symbolS *symbolP = symbol_create (name, segment, valu, frag);
87 * Link to end of symbol chain.
91 extern int symbol_table_frozen;
92 if (symbol_table_frozen)
96 symbol_append (symbolP, symbol_lastP, &symbol_rootP, &symbol_lastP);
101 /* Save a symbol name on a permanent obstack, and convert it according
102 to the object file format. */
105 save_symbol_name (name)
108 unsigned int name_length;
111 name_length = strlen (name) + 1; /* +1 for \0 */
112 obstack_grow (¬es, name, name_length);
113 ret = obstack_finish (¬es);
115 #ifdef STRIP_UNDERSCORE
120 #ifdef tc_canonicalize_symbol_name
121 ret = tc_canonicalize_symbol_name (ret);
124 if (! symbols_case_sensitive)
128 for (s = (unsigned char *) ret; *s != '\0'; s++)
137 symbol_create (name, segment, valu, frag)
138 const char *name; /* It is copied, the caller can destroy/modify */
139 segT segment; /* Segment identifier (SEG_<something>) */
140 valueT valu; /* Symbol value */
141 fragS *frag; /* Associated fragment */
143 char *preserved_copy_of_name;
146 preserved_copy_of_name = save_symbol_name (name);
148 symbolP = (symbolS *) obstack_alloc (¬es, sizeof (symbolS));
150 /* symbol must be born in some fixed state. This seems as good as any. */
151 memset (symbolP, 0, sizeof (symbolS));
154 symbolP->bsym = bfd_make_empty_symbol (stdoutput);
155 if (symbolP->bsym == NULL)
156 as_perror ("%s", "bfd_make_empty_symbol");
157 symbolP->bsym->udata.p = (PTR) symbolP;
159 S_SET_NAME (symbolP, preserved_copy_of_name);
161 S_SET_SEGMENT (symbolP, segment);
162 S_SET_VALUE (symbolP, valu);
163 symbol_clear_list_pointers (symbolP);
165 symbolP->sy_frag = frag;
166 #ifndef BFD_ASSEMBLER
167 symbolP->sy_number = ~0;
168 symbolP->sy_name_offset = (unsigned int) ~0;
171 obj_symbol_new_hook (symbolP);
173 #ifdef tc_symbol_new_hook
174 tc_symbol_new_hook (symbolP);
182 /* Local symbol support. If we can get away with it, we keep only a
183 small amount of information for local symbols. */
185 static struct local_symbol *local_symbol_make PARAMS ((const char *, segT,
187 static symbolS *local_symbol_convert PARAMS ((struct local_symbol *));
189 /* Used for statistics. */
191 static unsigned long local_symbol_count;
192 static unsigned long local_symbol_conversion_count;
194 /* This macro is called with a symbol argument passed by reference.
195 It returns whether this is a local symbol. If necessary, it
196 changes its argument to the real symbol. */
198 #define LOCAL_SYMBOL_CHECK(s) \
200 ? (local_symbol_converted_p ((struct local_symbol *) s) \
201 ? (s = local_symbol_get_real_symbol ((struct local_symbol *) s), \
206 /* Create a local symbol and insert it into the local hash table. */
208 static struct local_symbol *
209 local_symbol_make (name, section, offset, frag)
216 struct local_symbol *ret;
218 ++local_symbol_count;
220 name_copy = save_symbol_name (name);
222 ret = (struct local_symbol *) obstack_alloc (¬es, sizeof *ret);
223 ret->lsy_marker = NULL;
224 ret->lsy_name = name_copy;
225 ret->lsy_section = section;
226 local_symbol_set_frag (ret, frag);
227 ret->lsy_offset = offset;
229 hash_jam (local_hash, name_copy, (PTR) ret);
234 /* Convert a local symbol into a real symbol. Note that we do not
235 reclaim the space used by the local symbol. */
238 local_symbol_convert (locsym)
239 struct local_symbol *locsym;
243 assert (locsym->lsy_marker == NULL);
244 if (local_symbol_converted_p (locsym))
245 return local_symbol_get_real_symbol (locsym);
247 ++local_symbol_conversion_count;
249 ret = symbol_new (locsym->lsy_name, locsym->lsy_section, locsym->lsy_offset,
250 local_symbol_get_frag (locsym));
252 if (local_symbol_resolved_p (locsym))
253 ret->sy_resolved = 1;
255 /* Local symbols are always either defined or used. */
258 symbol_table_insert (ret);
260 local_symbol_mark_converted (locsym);
261 local_symbol_set_real_symbol (locsym, ret);
263 hash_jam (local_hash, locsym->lsy_name, NULL);
268 #else /* ! BFD_ASSEMBLER */
270 #define LOCAL_SYMBOL_CHECK(s) 0
271 #define local_symbol_convert(s) ((symbolS *) s)
273 #endif /* ! BFD_ASSEMBLER */
279 * We have just seen "<name>:".
280 * Creates a struct symbol unless it already exists.
282 * Gripes if we are redefining a symbol incompatibly (and ignores it).
286 colon (sym_name) /* just seen "x:" - rattle symbols & frags */
287 const char *sym_name; /* symbol name, as a cannonical string */
288 /* We copy this string: OK to alter later. */
290 register symbolS *symbolP; /* symbol we are working with */
292 /* Sun local labels go out of scope whenever a non-local symbol is
294 if (LOCAL_LABELS_DOLLAR)
299 local = bfd_is_local_label_name (stdoutput, sym_name);
301 local = LOCAL_LABEL (sym_name);
305 dollar_label_clear ();
308 #ifndef WORKING_DOT_WORD
309 if (new_broken_words)
311 struct broken_word *a;
316 extern const int md_short_jump_size;
317 extern const int md_long_jump_size;
318 possible_bytes = (md_short_jump_size
319 + new_broken_words * md_long_jump_size);
322 frag_opcode = frag_var (rs_broken_word,
326 (symbolS *) broken_words,
330 /* We want to store the pointer to where to insert the jump table in the
331 fr_opcode of the rs_broken_word frag. This requires a little
334 && (frag_tmp->fr_type != rs_broken_word
335 || frag_tmp->fr_opcode))
336 frag_tmp = frag_tmp->fr_next;
338 frag_tmp->fr_opcode = frag_opcode;
339 new_broken_words = 0;
341 for (a = broken_words; a && a->dispfrag == 0; a = a->next_broken_word)
342 a->dispfrag = frag_tmp;
344 #endif /* WORKING_DOT_WORD */
346 if ((symbolP = symbol_find (sym_name)) != 0)
348 #ifdef RESOLVE_SYMBOL_REDEFINITION
349 if (RESOLVE_SYMBOL_REDEFINITION (symbolP))
353 * Now check for undefined symbols
355 if (LOCAL_SYMBOL_CHECK (symbolP))
358 struct local_symbol *locsym = (struct local_symbol *) symbolP;
360 if (locsym->lsy_section != undefined_section
361 && (local_symbol_get_frag (locsym) != frag_now
362 || locsym->lsy_section != now_seg
363 || locsym->lsy_offset != frag_now_fix ()))
365 as_bad (_("Symbol %s already defined."), sym_name);
369 locsym->lsy_section = now_seg;
370 local_symbol_set_frag (locsym, frag_now);
371 locsym->lsy_offset = frag_now_fix ();
374 else if (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP))
376 if (S_GET_VALUE (symbolP) == 0)
378 symbolP->sy_frag = frag_now;
380 S_SET_OTHER(symbolP, const_flag);
382 S_SET_VALUE (symbolP, (valueT) frag_now_fix ());
383 S_SET_SEGMENT (symbolP, now_seg);
386 #endif /* if we have one, it better be zero. */
392 * There are still several cases to check:
393 * A .comm/.lcomm symbol being redefined as
394 * initialized data is OK
395 * A .comm/.lcomm symbol being redefined with
396 * a larger size is also OK
398 * This only used to be allowed on VMS gas, but Sun cc
399 * on the sparc also depends on it.
402 if (((!S_IS_DEBUG (symbolP)
403 && (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP))
404 && S_IS_EXTERNAL (symbolP))
405 || S_GET_SEGMENT (symbolP) == bss_section)
406 && (now_seg == data_section
407 || now_seg == S_GET_SEGMENT (symbolP)))
410 * Select which of the 2 cases this is
412 if (now_seg != data_section)
415 * New .comm for prev .comm symbol.
416 * If the new size is larger we just
417 * change its value. If the new size
418 * is smaller, we ignore this symbol
420 if (S_GET_VALUE (symbolP)
421 < ((unsigned) frag_now_fix ()))
423 S_SET_VALUE (symbolP, (valueT) frag_now_fix ());
428 /* It is a .comm/.lcomm being converted to initialized
430 symbolP->sy_frag = frag_now;
432 S_SET_OTHER(symbolP, const_flag);
434 S_SET_VALUE (symbolP, (valueT) frag_now_fix ());
435 S_SET_SEGMENT (symbolP, now_seg); /* keep N_EXT bit */
440 #if (!defined (OBJ_AOUT) && !defined (OBJ_MAYBE_AOUT) \
441 && !defined (OBJ_BOUT) && !defined (OBJ_MAYBE_BOUT))
442 static const char *od_buf = "";
447 if (OUTPUT_FLAVOR == bfd_target_aout_flavour)
449 sprintf(od_buf, "%d.%d.",
450 S_GET_OTHER (symbolP),
451 S_GET_DESC (symbolP));
453 as_fatal (_("Symbol \"%s\" is already defined as \"%s\"/%s%ld."),
455 segment_name (S_GET_SEGMENT (symbolP)),
457 (long) S_GET_VALUE (symbolP));
459 } /* if the undefined symbol has no value */
463 /* Don't blow up if the definition is the same */
464 if (!(frag_now == symbolP->sy_frag
465 && S_GET_VALUE (symbolP) == frag_now_fix ()
466 && S_GET_SEGMENT (symbolP) == now_seg))
467 as_fatal (_("Symbol %s already defined."), sym_name);
468 } /* if this symbol is not yet defined */
472 else if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, sym_name))
474 symbolP = (symbolS *) local_symbol_make (sym_name, now_seg,
475 (valueT) frag_now_fix (),
478 #endif /* BFD_ASSEMBLER */
481 symbolP = symbol_new (sym_name, now_seg, (valueT) frag_now_fix (),
484 S_SET_OTHER (symbolP, const_flag);
487 symbol_table_insert (symbolP);
488 } /* if we have seen this symbol before */
490 if (mri_common_symbol != NULL)
492 /* This symbol is actually being defined within an MRI common
493 section. This requires special handling. */
494 if (LOCAL_SYMBOL_CHECK (symbolP))
495 symbolP = local_symbol_convert ((struct local_symbol *) symbolP);
496 symbolP->sy_value.X_op = O_symbol;
497 symbolP->sy_value.X_add_symbol = mri_common_symbol;
498 symbolP->sy_value.X_add_number = S_GET_VALUE (mri_common_symbol);
499 symbolP->sy_frag = &zero_address_frag;
500 S_SET_SEGMENT (symbolP, expr_section);
501 symbolP->sy_mri_common = 1;
505 tc_frob_label (symbolP);
507 #ifdef obj_frob_label
508 obj_frob_label (symbolP);
516 * symbol_table_insert()
518 * Die if we can't insert the symbol.
523 symbol_table_insert (symbolP)
526 register const char *error_string;
529 know (S_GET_NAME (symbolP));
531 if (LOCAL_SYMBOL_CHECK (symbolP))
533 error_string = hash_jam (local_hash, S_GET_NAME (symbolP),
535 if (error_string != NULL)
536 as_fatal (_("Inserting \"%s\" into symbol table failed: %s"),
537 S_GET_NAME (symbolP), error_string);
541 if ((error_string = hash_jam (sy_hash, S_GET_NAME (symbolP), (PTR) symbolP)))
543 as_fatal (_("Inserting \"%s\" into symbol table failed: %s"),
544 S_GET_NAME (symbolP), error_string);
546 } /* symbol_table_insert() */
549 * symbol_find_or_make()
551 * If a symbol name does not exist, create it as undefined, and insert
552 * it into the symbol table. Return a pointer to it.
555 symbol_find_or_make (name)
558 register symbolS *symbolP;
560 symbolP = symbol_find (name);
565 if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, name))
567 symbolP = md_undefined_symbol ((char *) name);
571 symbolP = (symbolS *) local_symbol_make (name, undefined_section,
578 symbolP = symbol_make (name);
580 symbol_table_insert (symbolP);
581 } /* if symbol wasn't found */
584 } /* symbol_find_or_make() */
592 /* Let the machine description default it, e.g. for register names. */
593 symbolP = md_undefined_symbol ((char *) name);
596 symbolP = symbol_new (name, undefined_section, (valueT) 0, &zero_address_frag);
599 } /* symbol_make() */
604 * Implement symbol table lookup.
605 * In: A symbol's name as a string: '\0' can't be part of a symbol name.
606 * Out: NULL if the name was not in the symbol table, else the address
607 * of a struct symbol associated with that name.
614 #ifdef STRIP_UNDERSCORE
615 return (symbol_find_base (name, 1));
616 #else /* STRIP_UNDERSCORE */
617 return (symbol_find_base (name, 0));
618 #endif /* STRIP_UNDERSCORE */
619 } /* symbol_find() */
622 symbol_find_base (name, strip_underscore)
624 int strip_underscore;
626 if (strip_underscore && *name == '_')
629 #ifdef tc_canonicalize_symbol_name
632 size_t len = strlen (name) + 1;
634 copy = (char *) alloca (len);
635 memcpy (copy, name, len);
636 name = tc_canonicalize_symbol_name (copy);
640 if (! symbols_case_sensitive)
647 name = copy = (char *) alloca (strlen (name) + 1);
649 while ((c = *orig++) != '\0')
660 struct local_symbol *locsym;
662 locsym = (struct local_symbol *) hash_find (local_hash, name);
664 return (symbolS *) locsym;
668 return ((symbolS *) hash_find (sy_hash, name));
672 * Once upon a time, symbols were kept in a singly linked list. At
673 * least coff needs to be able to rearrange them from time to time, for
674 * which a doubly linked list is much more convenient. Loic did these
675 * as macros which seemed dangerous to me so they're now functions.
679 /* Link symbol ADDME after symbol TARGET in the chain. */
681 symbol_append (addme, target, rootPP, lastPP)
687 if (LOCAL_SYMBOL_CHECK (addme))
689 if (target != NULL && LOCAL_SYMBOL_CHECK (target))
694 know (*rootPP == NULL);
695 know (*lastPP == NULL);
696 addme->sy_next = NULL;
697 #ifdef SYMBOLS_NEED_BACKPOINTERS
698 addme->sy_previous = NULL;
703 } /* if the list is empty */
705 if (target->sy_next != NULL)
707 #ifdef SYMBOLS_NEED_BACKPOINTERS
708 target->sy_next->sy_previous = addme;
709 #endif /* SYMBOLS_NEED_BACKPOINTERS */
713 know (*lastPP == target);
715 } /* if we have a next */
717 addme->sy_next = target->sy_next;
718 target->sy_next = addme;
720 #ifdef SYMBOLS_NEED_BACKPOINTERS
721 addme->sy_previous = target;
722 #endif /* SYMBOLS_NEED_BACKPOINTERS */
724 debug_verify_symchain (symbol_rootP, symbol_lastP);
727 /* Set the chain pointers of SYMBOL to null. */
729 symbol_clear_list_pointers (symbolP)
732 if (LOCAL_SYMBOL_CHECK (symbolP))
734 symbolP->sy_next = NULL;
735 #ifdef SYMBOLS_NEED_BACKPOINTERS
736 symbolP->sy_previous = NULL;
740 #ifdef SYMBOLS_NEED_BACKPOINTERS
741 /* Remove SYMBOLP from the list. */
743 symbol_remove (symbolP, rootPP, lastPP)
748 if (LOCAL_SYMBOL_CHECK (symbolP))
751 if (symbolP == *rootPP)
753 *rootPP = symbolP->sy_next;
754 } /* if it was the root */
756 if (symbolP == *lastPP)
758 *lastPP = symbolP->sy_previous;
759 } /* if it was the tail */
761 if (symbolP->sy_next != NULL)
763 symbolP->sy_next->sy_previous = symbolP->sy_previous;
766 if (symbolP->sy_previous != NULL)
768 symbolP->sy_previous->sy_next = symbolP->sy_next;
771 debug_verify_symchain (*rootPP, *lastPP);
774 /* Link symbol ADDME before symbol TARGET in the chain. */
776 symbol_insert (addme, target, rootPP, lastPP)
780 symbolS **lastPP ATTRIBUTE_UNUSED;
782 if (LOCAL_SYMBOL_CHECK (addme))
784 if (LOCAL_SYMBOL_CHECK (target))
787 if (target->sy_previous != NULL)
789 target->sy_previous->sy_next = addme;
793 know (*rootPP == target);
797 addme->sy_previous = target->sy_previous;
798 target->sy_previous = addme;
799 addme->sy_next = target;
801 debug_verify_symchain (*rootPP, *lastPP);
804 #endif /* SYMBOLS_NEED_BACKPOINTERS */
807 verify_symbol_chain (rootP, lastP)
811 symbolS *symbolP = rootP;
816 for (; symbol_next (symbolP) != NULL; symbolP = symbol_next (symbolP))
819 assert (symbolP->bsym != NULL);
821 #ifdef SYMBOLS_NEED_BACKPOINTERS
822 assert (symbolP->sy_next->sy_previous == symbolP);
824 /* Walk the list anyways, to make sure pointers are still good. */
826 #endif /* SYMBOLS_NEED_BACKPOINTERS */
829 assert (lastP == symbolP);
833 verify_symbol_chain_2 (sym)
836 symbolS *p = sym, *n = sym;
837 #ifdef SYMBOLS_NEED_BACKPOINTERS
838 while (symbol_previous (p))
839 p = symbol_previous (p);
841 while (symbol_next (n))
843 verify_symbol_chain (p, n);
846 /* Resolve the value of a symbol. This is called during the final
847 pass over the symbol table to resolve any symbols with complex
851 resolve_symbol_value (symp, finalize)
860 if (LOCAL_SYMBOL_CHECK (symp))
862 struct local_symbol *locsym = (struct local_symbol *) symp;
864 if (local_symbol_resolved_p (locsym))
865 return locsym->lsy_offset / OCTETS_PER_BYTE;
867 final_val = (local_symbol_get_frag (locsym)->fr_address
868 + locsym->lsy_offset) / OCTETS_PER_BYTE;
872 locsym->lsy_offset = final_val;
873 local_symbol_mark_resolved (locsym);
880 if (symp->sy_resolved)
882 if (symp->sy_value.X_op == O_constant)
883 return (valueT) symp->sy_value.X_add_number;
889 final_seg = S_GET_SEGMENT (symp);
891 if (symp->sy_resolving)
894 as_bad (_("Symbol definition loop encountered at %s"), S_GET_NAME (symp));
900 symbolS *add_symbol, *op_symbol;
902 segT seg_left, seg_right;
905 symp->sy_resolving = 1;
907 /* Help out with CSE. */
908 add_symbol = symp->sy_value.X_add_symbol;
909 op_symbol = symp->sy_value.X_op_symbol;
910 final_val = symp->sy_value.X_add_number;
911 op = symp->sy_value.X_op;
924 final_val += symp->sy_frag->fr_address / OCTETS_PER_BYTE;
925 if (final_seg == expr_section)
926 final_seg = absolute_section;
932 left = resolve_symbol_value (add_symbol, finalize);
935 if (symp->sy_mri_common)
937 /* This is a symbol inside an MRI common section. The
938 relocation routines are going to handle it specially.
939 Don't change the value. */
940 resolved = symbol_resolved_p (add_symbol);
944 if (finalize && final_val == 0)
946 if (LOCAL_SYMBOL_CHECK (add_symbol))
947 add_symbol = local_symbol_convert ((struct local_symbol *)
949 copy_symbol_attributes (symp, add_symbol);
952 /* If we have equated this symbol to an undefined symbol, we
953 keep X_op set to O_symbol, and we don't change
954 X_add_number. This permits the routine which writes out
955 relocation to detect this case, and convert the
956 relocation to be against the symbol to which this symbol
958 if (! S_IS_DEFINED (add_symbol) || S_IS_COMMON (add_symbol))
962 S_SET_SEGMENT (symp, S_GET_SEGMENT (add_symbol));
963 symp->sy_value.X_op = O_symbol;
964 symp->sy_value.X_add_symbol = add_symbol;
965 symp->sy_value.X_add_number = final_val;
968 resolved = symbol_resolved_p (add_symbol);
969 goto exit_dont_set_value;
973 final_val += symp->sy_frag->fr_address + left;
974 if (final_seg == expr_section || final_seg == undefined_section)
975 final_seg = S_GET_SEGMENT (add_symbol);
978 resolved = symbol_resolved_p (add_symbol);
984 left = resolve_symbol_value (add_symbol, finalize);
988 else if (op == O_logical_not)
993 final_val += left + symp->sy_frag->fr_address;
994 if (final_seg == expr_section || final_seg == undefined_section)
995 final_seg = absolute_section;
997 resolved = symbol_resolved_p (add_symbol);
1005 case O_bit_inclusive_or:
1007 case O_bit_exclusive_or:
1019 left = resolve_symbol_value (add_symbol, finalize);
1020 right = resolve_symbol_value (op_symbol, finalize);
1021 seg_left = S_GET_SEGMENT (add_symbol);
1022 seg_right = S_GET_SEGMENT (op_symbol);
1024 /* Simplify addition or subtraction of a constant by folding the
1025 constant into X_add_number. */
1026 if (op == O_add || op == O_subtract)
1028 if (seg_right == absolute_section)
1038 else if (seg_left == absolute_section && op == O_add)
1042 add_symbol = op_symbol;
1049 /* Subtraction is permitted if both operands are in the same
1050 section. Otherwise, both operands must be absolute. We
1051 already handled the case of addition or subtraction of a
1052 constant above. This will probably need to be changed
1053 for an object file format which supports arbitrary
1054 expressions, such as IEEE-695. */
1055 /* Don't emit messages unless we're finalizing the symbol value,
1056 otherwise we may get the same message multiple times. */
1057 if ((seg_left != absolute_section
1058 || seg_right != absolute_section)
1059 && (op != O_subtract
1060 || seg_left != seg_right
1061 || seg_left == undefined_section)
1067 if (expr_symbol_where (symp, &file, &line))
1069 if (seg_left == undefined_section)
1070 as_bad_where (file, line,
1071 _("undefined symbol %s in operation"),
1072 S_GET_NAME (symp->sy_value.X_add_symbol));
1073 if (seg_right == undefined_section)
1074 as_bad_where (file, line,
1075 _("undefined symbol %s in operation"),
1076 S_GET_NAME (symp->sy_value.X_op_symbol));
1077 if (seg_left != undefined_section
1078 && seg_right != undefined_section)
1079 as_bad_where (file, line, _("invalid section for operation"));
1083 if (seg_left == undefined_section)
1084 as_bad (_("undefined symbol %s in operation setting %s"),
1085 S_GET_NAME (symp->sy_value.X_add_symbol),
1087 if (seg_right == undefined_section)
1088 as_bad (_("undefined symbol %s in operation setting %s"),
1089 S_GET_NAME (symp->sy_value.X_op_symbol),
1091 if (seg_left != undefined_section
1092 && seg_right != undefined_section)
1093 as_bad (_("invalid section for operation setting %s"),
1098 /* Check for division by zero. */
1099 if ((op == O_divide || op == O_modulus) && right == 0)
1101 /* If seg_right is not absolute_section, then we've
1102 already issued a warning about using a bad symbol. */
1103 if (seg_right == absolute_section && finalize)
1108 if (expr_symbol_where (symp, &file, &line))
1109 as_bad_where (file, line, _("division by zero"));
1111 as_bad (_("division by zero when setting %s"),
1118 switch (symp->sy_value.X_op)
1120 case O_multiply: left *= right; break;
1121 case O_divide: left /= right; break;
1122 case O_modulus: left %= right; break;
1123 case O_left_shift: left <<= right; break;
1124 case O_right_shift: left >>= right; break;
1125 case O_bit_inclusive_or: left |= right; break;
1126 case O_bit_or_not: left |= ~right; break;
1127 case O_bit_exclusive_or: left ^= right; break;
1128 case O_bit_and: left &= right; break;
1129 case O_add: left += right; break;
1130 case O_subtract: left -= right; break;
1131 case O_eq: left = left == right ? ~ (offsetT) 0 : 0; break;
1132 case O_ne: left = left != right ? ~ (offsetT) 0 : 0; break;
1133 case O_lt: left = left < right ? ~ (offsetT) 0 : 0; break;
1134 case O_le: left = left <= right ? ~ (offsetT) 0 : 0; break;
1135 case O_ge: left = left >= right ? ~ (offsetT) 0 : 0; break;
1136 case O_gt: left = left > right ? ~ (offsetT) 0 : 0; break;
1137 case O_logical_and: left = left && right; break;
1138 case O_logical_or: left = left || right; break;
1142 final_val += symp->sy_frag->fr_address + left;
1143 if (final_seg == expr_section || final_seg == undefined_section)
1144 final_seg = absolute_section;
1145 resolved = (symbol_resolved_p (add_symbol)
1146 && symbol_resolved_p (op_symbol));
1152 /* Give an error (below) if not in expr_section. We don't
1153 want to worry about expr_section symbols, because they
1154 are fictional (they are created as part of expression
1155 resolution), and any problems may not actually mean
1160 symp->sy_resolving = 0;
1165 S_SET_VALUE (symp, final_val);
1167 #if defined (OBJ_AOUT) && ! defined (BFD_ASSEMBLER)
1168 /* The old a.out backend does not handle S_SET_SEGMENT correctly
1169 for a stab symbol, so we use this bad hack. */
1170 if (final_seg != S_GET_SEGMENT (symp))
1172 S_SET_SEGMENT (symp, final_seg);
1175 exit_dont_set_value:
1176 /* Don't worry if we can't resolve an expr_section symbol. */
1180 symp->sy_resolved = 1;
1181 else if (S_GET_SEGMENT (symp) != expr_section)
1183 as_bad (_("can't resolve value for symbol \"%s\""), S_GET_NAME (symp));
1184 symp->sy_resolved = 1;
1191 #ifdef BFD_ASSEMBLER
1193 static void resolve_local_symbol PARAMS ((const char *, PTR));
1195 /* A static function passed to hash_traverse. */
1198 resolve_local_symbol (key, value)
1199 const char *key ATTRIBUTE_UNUSED;
1203 resolve_symbol_value (value, 1);
1208 /* Resolve all local symbols. */
1211 resolve_local_symbol_values ()
1213 #ifdef BFD_ASSEMBLER
1214 hash_traverse (local_hash, resolve_local_symbol);
1218 /* Dollar labels look like a number followed by a dollar sign. Eg, "42$".
1219 They are *really* local. That is, they go out of scope whenever we see a
1220 label that isn't local. Also, like fb labels, there can be multiple
1221 instances of a dollar label. Therefor, we name encode each instance with
1222 the instance number, keep a list of defined symbols separate from the real
1223 symbol table, and we treat these buggers as a sparse array. */
1225 static long *dollar_labels;
1226 static long *dollar_label_instances;
1227 static char *dollar_label_defines;
1228 static unsigned long dollar_label_count;
1229 static unsigned long dollar_label_max;
1232 dollar_label_defined (label)
1237 know ((dollar_labels != NULL) || (dollar_label_count == 0));
1239 for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i)
1241 return dollar_label_defines[i - dollar_labels];
1243 /* if we get here, label isn't defined */
1245 } /* dollar_label_defined() */
1248 dollar_label_instance (label)
1253 know ((dollar_labels != NULL) || (dollar_label_count == 0));
1255 for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i)
1257 return (dollar_label_instances[i - dollar_labels]);
1259 /* If we get here, we haven't seen the label before, therefore its instance
1265 dollar_label_clear ()
1267 memset (dollar_label_defines, '\0', (unsigned int) dollar_label_count);
1270 #define DOLLAR_LABEL_BUMP_BY 10
1273 define_dollar_label (label)
1278 for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i)
1281 ++dollar_label_instances[i - dollar_labels];
1282 dollar_label_defines[i - dollar_labels] = 1;
1286 /* if we get to here, we don't have label listed yet. */
1288 if (dollar_labels == NULL)
1290 dollar_labels = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long));
1291 dollar_label_instances = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long));
1292 dollar_label_defines = xmalloc (DOLLAR_LABEL_BUMP_BY);
1293 dollar_label_max = DOLLAR_LABEL_BUMP_BY;
1294 dollar_label_count = 0;
1296 else if (dollar_label_count == dollar_label_max)
1298 dollar_label_max += DOLLAR_LABEL_BUMP_BY;
1299 dollar_labels = (long *) xrealloc ((char *) dollar_labels,
1300 dollar_label_max * sizeof (long));
1301 dollar_label_instances = (long *) xrealloc ((char *) dollar_label_instances,
1302 dollar_label_max * sizeof (long));
1303 dollar_label_defines = xrealloc (dollar_label_defines, dollar_label_max);
1304 } /* if we needed to grow */
1306 dollar_labels[dollar_label_count] = label;
1307 dollar_label_instances[dollar_label_count] = 1;
1308 dollar_label_defines[dollar_label_count] = 1;
1309 ++dollar_label_count;
1313 * dollar_label_name()
1315 * Caller must copy returned name: we re-use the area for the next name.
1317 * The mth occurence of label n: is turned into the symbol "Ln^Am"
1318 * where n is the label number and m is the instance number. "L" makes
1319 * it a label discarded unless debugging and "^A"('\1') ensures no
1320 * ordinary symbol SHOULD get the same name as a local label
1321 * symbol. The first "4:" is "L4^A1" - the m numbers begin at 1.
1323 * fb labels get the same treatment, except that ^B is used in place of ^A.
1326 char * /* Return local label name. */
1327 dollar_label_name (n, augend)
1328 register long n; /* we just saw "n$:" : n a number */
1329 register int augend; /* 0 for current instance, 1 for new instance */
1332 /* Returned to caller, then copied. used for created names ("4f") */
1333 static char symbol_name_build[24];
1336 char symbol_name_temporary[20]; /* build up a number, BACKWARDS */
1339 know (augend == 0 || augend == 1);
1340 p = symbol_name_build;
1341 #ifdef LOCAL_LABEL_PREFIX
1342 *p++ = LOCAL_LABEL_PREFIX;
1346 /* Next code just does sprintf( {}, "%d", n); */
1348 q = symbol_name_temporary;
1349 for (*q++ = 0, i = n; i; ++q)
1354 while ((*p = *--q) != '\0')
1359 /* instance number */
1360 q = symbol_name_temporary;
1361 for (*q++ = 0, i = dollar_label_instance (n) + augend; i; ++q)
1366 while ((*p++ = *--q) != '\0');;
1368 /* The label, as a '\0' ended string, starts at symbol_name_build. */
1369 return symbol_name_build;
1373 * Sombody else's idea of local labels. They are made by "n:" where n
1374 * is any decimal digit. Refer to them with
1375 * "nb" for previous (backward) n:
1376 * or "nf" for next (forward) n:.
1378 * We do a little better and let n be any number, not just a single digit, but
1379 * since the other guy's assembler only does ten, we treat the first ten
1382 * Like someone else's assembler, we have one set of local label counters for
1383 * entire assembly, not one set per (sub)segment like in most assemblers. This
1384 * implies that one can refer to a label in another segment, and indeed some
1385 * crufty compilers have done just that.
1387 * Since there could be a LOT of these things, treat them as a sparse array.
1390 #define FB_LABEL_SPECIAL (10)
1392 static long fb_low_counter[FB_LABEL_SPECIAL];
1393 static long *fb_labels;
1394 static long *fb_label_instances;
1395 static long fb_label_count;
1396 static long fb_label_max;
1398 /* this must be more than FB_LABEL_SPECIAL */
1399 #define FB_LABEL_BUMP_BY (FB_LABEL_SPECIAL + 6)
1404 memset ((void *) fb_low_counter, '\0', sizeof (fb_low_counter));
1405 } /* fb_label_init() */
1407 /* add one to the instance number of this fb label */
1409 fb_label_instance_inc (label)
1414 if (label < FB_LABEL_SPECIAL)
1416 ++fb_low_counter[label];
1420 if (fb_labels != NULL)
1422 for (i = fb_labels + FB_LABEL_SPECIAL;
1423 i < fb_labels + fb_label_count; ++i)
1427 ++fb_label_instances[i - fb_labels];
1429 } /* if we find it */
1430 } /* for each existing label */
1433 /* if we get to here, we don't have label listed yet. */
1435 if (fb_labels == NULL)
1437 fb_labels = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long));
1438 fb_label_instances = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long));
1439 fb_label_max = FB_LABEL_BUMP_BY;
1440 fb_label_count = FB_LABEL_SPECIAL;
1443 else if (fb_label_count == fb_label_max)
1445 fb_label_max += FB_LABEL_BUMP_BY;
1446 fb_labels = (long *) xrealloc ((char *) fb_labels,
1447 fb_label_max * sizeof (long));
1448 fb_label_instances = (long *) xrealloc ((char *) fb_label_instances,
1449 fb_label_max * sizeof (long));
1450 } /* if we needed to grow */
1452 fb_labels[fb_label_count] = label;
1453 fb_label_instances[fb_label_count] = 1;
1458 fb_label_instance (label)
1463 if (label < FB_LABEL_SPECIAL)
1465 return (fb_low_counter[label]);
1468 if (fb_labels != NULL)
1470 for (i = fb_labels + FB_LABEL_SPECIAL;
1471 i < fb_labels + fb_label_count; ++i)
1475 return (fb_label_instances[i - fb_labels]);
1476 } /* if we find it */
1477 } /* for each existing label */
1480 /* We didn't find the label, so this must be a reference to the
1488 * Caller must copy returned name: we re-use the area for the next name.
1490 * The mth occurence of label n: is turned into the symbol "Ln^Bm"
1491 * where n is the label number and m is the instance number. "L" makes
1492 * it a label discarded unless debugging and "^B"('\2') ensures no
1493 * ordinary symbol SHOULD get the same name as a local label
1494 * symbol. The first "4:" is "L4^B1" - the m numbers begin at 1.
1496 * dollar labels get the same treatment, except that ^A is used in place of ^B. */
1498 char * /* Return local label name. */
1499 fb_label_name (n, augend)
1500 long n; /* we just saw "n:", "nf" or "nb" : n a number */
1501 long augend; /* 0 for nb, 1 for n:, nf */
1504 /* Returned to caller, then copied. used for created names ("4f") */
1505 static char symbol_name_build[24];
1508 char symbol_name_temporary[20]; /* build up a number, BACKWARDS */
1511 know (augend == 0 || augend == 1);
1512 p = symbol_name_build;
1515 /* Next code just does sprintf( {}, "%d", n); */
1517 q = symbol_name_temporary;
1518 for (*q++ = 0, i = n; i; ++q)
1523 while ((*p = *--q) != '\0')
1528 /* instance number */
1529 q = symbol_name_temporary;
1530 for (*q++ = 0, i = fb_label_instance (n) + augend; i; ++q)
1535 while ((*p++ = *--q) != '\0');;
1537 /* The label, as a '\0' ended string, starts at symbol_name_build. */
1538 return (symbol_name_build);
1539 } /* fb_label_name() */
1542 * decode name that may have been generated by foo_label_name() above. If
1543 * the name wasn't generated by foo_label_name(), then return it unaltered.
1544 * This is used for error messages.
1548 decode_local_label_name (s)
1552 char *symbol_decode;
1554 int instance_number;
1556 const char *message_format = _("\"%d\" (instance number %d of a %s label)");
1561 for (label_number = 0, p = s + 1; isdigit ((unsigned char) *p); ++p)
1562 label_number = (10 * label_number) + *p - '0';
1571 for (instance_number = 0, p++; isdigit ((unsigned char) *p); ++p)
1572 instance_number = (10 * instance_number) + *p - '0';
1574 symbol_decode = obstack_alloc (¬es, strlen (message_format) + 30);
1575 sprintf (symbol_decode, message_format, label_number, instance_number, type);
1577 return symbol_decode;
1580 /* Get the value of a symbol. */
1586 #ifdef BFD_ASSEMBLER
1587 if (LOCAL_SYMBOL_CHECK (s))
1588 return ((struct local_symbol *) s)->lsy_offset;
1591 if (!s->sy_resolved && s->sy_value.X_op != O_constant)
1592 resolve_symbol_value (s, 1);
1593 if (s->sy_value.X_op != O_constant)
1595 static symbolS *recur;
1597 /* FIXME: In non BFD assemblers, S_IS_DEFINED and S_IS_COMMON
1598 may call S_GET_VALUE. We use a static symbol to avoid the
1599 immediate recursion. */
1601 return (valueT) s->sy_value.X_add_number;
1603 if (! s->sy_resolved
1604 || s->sy_value.X_op != O_symbol
1605 || (S_IS_DEFINED (s) && ! S_IS_COMMON (s)))
1606 as_bad (_("Attempt to get value of unresolved symbol %s"),
1610 return (valueT) s->sy_value.X_add_number;
1613 /* Set the value of a symbol. */
1616 S_SET_VALUE (s, val)
1620 #ifdef BFD_ASSEMBLER
1621 if (LOCAL_SYMBOL_CHECK (s))
1623 ((struct local_symbol *) s)->lsy_offset = val;
1628 s->sy_value.X_op = O_constant;
1629 s->sy_value.X_add_number = (offsetT) val;
1630 s->sy_value.X_unsigned = 0;
1634 copy_symbol_attributes (dest, src)
1635 symbolS *dest, *src;
1637 if (LOCAL_SYMBOL_CHECK (dest))
1638 dest = local_symbol_convert ((struct local_symbol *) dest);
1639 if (LOCAL_SYMBOL_CHECK (src))
1640 src = local_symbol_convert ((struct local_symbol *) src);
1642 #ifdef BFD_ASSEMBLER
1643 /* In an expression, transfer the settings of these flags.
1644 The user can override later, of course. */
1645 #define COPIED_SYMFLAGS (BSF_FUNCTION | BSF_OBJECT)
1646 dest->bsym->flags |= src->bsym->flags & COPIED_SYMFLAGS;
1649 #ifdef OBJ_COPY_SYMBOL_ATTRIBUTES
1650 OBJ_COPY_SYMBOL_ATTRIBUTES (dest, src);
1654 #ifdef BFD_ASSEMBLER
1662 if (LOCAL_SYMBOL_CHECK (s))
1665 flags = s->bsym->flags;
1667 return (flags & BSF_FUNCTION) != 0;
1676 if (LOCAL_SYMBOL_CHECK (s))
1679 flags = s->bsym->flags;
1682 if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL))
1685 return (flags & BSF_GLOBAL) != 0;
1692 if (LOCAL_SYMBOL_CHECK (s))
1694 return (s->bsym->flags & BSF_WEAK) != 0;
1701 if (LOCAL_SYMBOL_CHECK (s))
1703 return bfd_is_com_section (s->bsym->section);
1710 if (LOCAL_SYMBOL_CHECK (s))
1711 return ((struct local_symbol *) s)->lsy_section != undefined_section;
1712 return s->bsym->section != undefined_section;
1719 if (LOCAL_SYMBOL_CHECK (s))
1721 if (s->bsym->flags & BSF_DEBUGGING)
1733 if (LOCAL_SYMBOL_CHECK (s))
1736 flags = s->bsym->flags;
1739 if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL))
1742 if (bfd_get_section (s->bsym) == reg_section)
1745 if (flag_strip_local_absolute
1746 && (flags & BSF_GLOBAL) == 0
1747 && bfd_get_section (s->bsym) == absolute_section)
1750 name = S_GET_NAME (s);
1751 return (name != NULL
1753 && (strchr (name, '\001')
1754 || strchr (name, '\002')
1755 || (! flag_keep_locals
1756 && (bfd_is_local_label (stdoutput, s->bsym)
1759 && name[1] == '?')))));
1766 return S_IS_EXTERNAL (s);
1773 return S_GET_NAME (s) == 0;
1780 if (LOCAL_SYMBOL_CHECK (s))
1781 return ((struct local_symbol *) s)->lsy_name;
1782 return s->bsym->name;
1789 if (LOCAL_SYMBOL_CHECK (s))
1790 return ((struct local_symbol *) s)->lsy_section;
1791 return s->bsym->section;
1795 S_SET_SEGMENT (s, seg)
1799 /* Don't reassign section symbols. The direct reason is to prevent seg
1800 faults assigning back to const global symbols such as *ABS*, but it
1801 shouldn't happen anyway. */
1803 if (LOCAL_SYMBOL_CHECK (s))
1805 if (seg == reg_section)
1806 s = local_symbol_convert ((struct local_symbol *) s);
1809 ((struct local_symbol *) s)->lsy_section = seg;
1814 if (s->bsym->flags & BSF_SECTION_SYM)
1816 if (s->bsym->section != seg)
1820 s->bsym->section = seg;
1827 if (LOCAL_SYMBOL_CHECK (s))
1828 s = local_symbol_convert ((struct local_symbol *) s);
1829 if ((s->bsym->flags & BSF_WEAK) != 0)
1831 /* Let .weak override .global. */
1834 s->bsym->flags |= BSF_GLOBAL;
1835 s->bsym->flags &= ~(BSF_LOCAL|BSF_WEAK);
1839 S_CLEAR_EXTERNAL (s)
1842 if (LOCAL_SYMBOL_CHECK (s))
1844 if ((s->bsym->flags & BSF_WEAK) != 0)
1846 /* Let .weak override. */
1849 s->bsym->flags |= BSF_LOCAL;
1850 s->bsym->flags &= ~(BSF_GLOBAL|BSF_WEAK);
1857 if (LOCAL_SYMBOL_CHECK (s))
1858 s = local_symbol_convert ((struct local_symbol *) s);
1859 s->bsym->flags |= BSF_WEAK;
1860 s->bsym->flags &= ~(BSF_GLOBAL|BSF_LOCAL);
1864 S_SET_NAME (s, name)
1868 if (LOCAL_SYMBOL_CHECK (s))
1870 ((struct local_symbol *) s)->lsy_name = name;
1873 s->bsym->name = name;
1875 #endif /* BFD_ASSEMBLER */
1877 #ifdef SYMBOLS_NEED_BACKPOINTERS
1879 /* Return the previous symbol in a chain. */
1885 if (LOCAL_SYMBOL_CHECK (s))
1887 return s->sy_previous;
1890 #endif /* SYMBOLS_NEED_BACKPOINTERS */
1892 /* Return the next symbol in a chain. */
1898 if (LOCAL_SYMBOL_CHECK (s))
1903 /* Return a pointer to the value of a symbol as an expression. */
1906 symbol_get_value_expression (s)
1909 if (LOCAL_SYMBOL_CHECK (s))
1910 s = local_symbol_convert ((struct local_symbol *) s);
1911 return &s->sy_value;
1914 /* Set the value of a symbol to an expression. */
1917 symbol_set_value_expression (s, exp)
1919 const expressionS *exp;
1921 if (LOCAL_SYMBOL_CHECK (s))
1922 s = local_symbol_convert ((struct local_symbol *) s);
1926 /* Set the frag of a symbol. */
1929 symbol_set_frag (s, f)
1933 #ifdef BFD_ASSEMBLER
1934 if (LOCAL_SYMBOL_CHECK (s))
1936 local_symbol_set_frag ((struct local_symbol *) s, f);
1943 /* Return the frag of a symbol. */
1949 #ifdef BFD_ASSEMBLER
1950 if (LOCAL_SYMBOL_CHECK (s))
1951 return local_symbol_get_frag ((struct local_symbol *) s);
1956 /* Mark a symbol as having been used. */
1959 symbol_mark_used (s)
1962 if (LOCAL_SYMBOL_CHECK (s))
1967 /* Clear the mark of whether a symbol has been used. */
1970 symbol_clear_used (s)
1973 if (LOCAL_SYMBOL_CHECK (s))
1974 s = local_symbol_convert ((struct local_symbol *) s);
1978 /* Return whether a symbol has been used. */
1984 if (LOCAL_SYMBOL_CHECK (s))
1989 /* Mark a symbol as having been used in a reloc. */
1992 symbol_mark_used_in_reloc (s)
1995 if (LOCAL_SYMBOL_CHECK (s))
1996 s = local_symbol_convert ((struct local_symbol *) s);
1997 s->sy_used_in_reloc = 1;
2000 /* Clear the mark of whether a symbol has been used in a reloc. */
2003 symbol_clear_used_in_reloc (s)
2006 if (LOCAL_SYMBOL_CHECK (s))
2008 s->sy_used_in_reloc = 0;
2011 /* Return whether a symbol has been used in a reloc. */
2014 symbol_used_in_reloc_p (s)
2017 if (LOCAL_SYMBOL_CHECK (s))
2019 return s->sy_used_in_reloc;
2022 /* Mark a symbol as an MRI common symbol. */
2025 symbol_mark_mri_common (s)
2028 if (LOCAL_SYMBOL_CHECK (s))
2029 s = local_symbol_convert ((struct local_symbol *) s);
2030 s->sy_mri_common = 1;
2033 /* Clear the mark of whether a symbol is an MRI common symbol. */
2036 symbol_clear_mri_common (s)
2039 if (LOCAL_SYMBOL_CHECK (s))
2041 s->sy_mri_common = 0;
2044 /* Return whether a symbol is an MRI common symbol. */
2047 symbol_mri_common_p (s)
2050 if (LOCAL_SYMBOL_CHECK (s))
2052 return s->sy_mri_common;
2055 /* Mark a symbol as having been written. */
2058 symbol_mark_written (s)
2061 if (LOCAL_SYMBOL_CHECK (s))
2066 /* Clear the mark of whether a symbol has been written. */
2069 symbol_clear_written (s)
2072 if (LOCAL_SYMBOL_CHECK (s))
2077 /* Return whether a symbol has been written. */
2080 symbol_written_p (s)
2083 if (LOCAL_SYMBOL_CHECK (s))
2088 /* Mark a symbol has having been resolved. */
2091 symbol_mark_resolved (s)
2094 #ifdef BFD_ASSEMBLER
2095 if (LOCAL_SYMBOL_CHECK (s))
2097 local_symbol_mark_resolved ((struct local_symbol *) s);
2104 /* Return whether a symbol has been resolved. */
2107 symbol_resolved_p (s)
2110 #ifdef BFD_ASSEMBLER
2111 if (LOCAL_SYMBOL_CHECK (s))
2112 return local_symbol_resolved_p ((struct local_symbol *) s);
2114 return s->sy_resolved;
2117 /* Return whether a symbol is a section symbol. */
2120 symbol_section_p (s)
2121 symbolS *s ATTRIBUTE_UNUSED;
2123 if (LOCAL_SYMBOL_CHECK (s))
2125 #ifdef BFD_ASSEMBLER
2126 return (s->bsym->flags & BSF_SECTION_SYM) != 0;
2133 /* Return whether a symbol is equated to another symbol. */
2136 symbol_equated_p (s)
2139 if (LOCAL_SYMBOL_CHECK (s))
2141 return s->sy_value.X_op == O_symbol;
2144 /* Return whether a symbol has a constant value. */
2147 symbol_constant_p (s)
2150 if (LOCAL_SYMBOL_CHECK (s))
2152 return s->sy_value.X_op == O_constant;
2155 #ifdef BFD_ASSEMBLER
2157 /* Return the BFD symbol for a symbol. */
2160 symbol_get_bfdsym (s)
2163 if (LOCAL_SYMBOL_CHECK (s))
2164 s = local_symbol_convert ((struct local_symbol *) s);
2168 /* Set the BFD symbol for a symbol. */
2171 symbol_set_bfdsym (s, bsym)
2175 if (LOCAL_SYMBOL_CHECK (s))
2176 s = local_symbol_convert ((struct local_symbol *) s);
2180 #endif /* BFD_ASSEMBLER */
2182 #ifdef OBJ_SYMFIELD_TYPE
2184 /* Get a pointer to the object format information for a symbol. */
2190 if (LOCAL_SYMBOL_CHECK (s))
2191 s = local_symbol_convert ((struct local_symbol *) s);
2195 /* Set the object format information for a symbol. */
2198 symbol_set_obj (s, o)
2200 OBJ_SYMFIELD_TYPE *o;
2202 if (LOCAL_SYMBOL_CHECK (s))
2203 s = local_symbol_convert ((struct local_symbol *) s);
2207 #endif /* OBJ_SYMFIELD_TYPE */
2209 #ifdef TC_SYMFIELD_TYPE
2211 /* Get a pointer to the processor information for a symbol. */
2217 if (LOCAL_SYMBOL_CHECK (s))
2218 s = local_symbol_convert ((struct local_symbol *) s);
2222 /* Set the processor information for a symbol. */
2225 symbol_set_tc (s, o)
2227 TC_SYMFIELD_TYPE *o;
2229 if (LOCAL_SYMBOL_CHECK (s))
2230 s = local_symbol_convert ((struct local_symbol *) s);
2234 #endif /* TC_SYMFIELD_TYPE */
2239 symbol_lastP = NULL;
2240 symbol_rootP = NULL; /* In case we have 0 symbols (!!) */
2241 sy_hash = hash_new ();
2242 #ifdef BFD_ASSEMBLER
2243 local_hash = hash_new ();
2246 memset ((char *) (&abs_symbol), '\0', sizeof (abs_symbol));
2247 #ifdef BFD_ASSEMBLER
2248 #if defined (EMIT_SECTION_SYMBOLS) || !defined (RELOC_REQUIRES_SYMBOL)
2249 abs_symbol.bsym = bfd_abs_section.symbol;
2252 /* Can't initialise a union. Sigh. */
2253 S_SET_SEGMENT (&abs_symbol, absolute_section);
2255 abs_symbol.sy_value.X_op = O_constant;
2256 abs_symbol.sy_frag = &zero_address_frag;
2258 if (LOCAL_LABELS_FB)
2266 /* Maximum indent level.
2267 Available for modification inside a gdb session. */
2268 int max_indent_level = 8;
2275 printf ("%*s", indent_level * 4, "");
2281 print_symbol_value_1 (file, sym)
2285 const char *name = S_GET_NAME (sym);
2286 if (!name || !name[0])
2288 fprintf (file, "sym %lx %s", (unsigned long) sym, name);
2290 if (LOCAL_SYMBOL_CHECK (sym))
2292 #ifdef BFD_ASSEMBLER
2293 struct local_symbol *locsym = (struct local_symbol *) sym;
2294 if (local_symbol_get_frag (locsym) != &zero_address_frag
2295 && local_symbol_get_frag (locsym) != NULL)
2296 fprintf (file, " frag %lx", (long) local_symbol_get_frag (locsym));
2297 if (local_symbol_resolved_p (locsym))
2298 fprintf (file, " resolved");
2299 fprintf (file, " local");
2304 if (sym->sy_frag != &zero_address_frag)
2305 fprintf (file, " frag %lx", (long) sym->sy_frag);
2307 fprintf (file, " written");
2308 if (sym->sy_resolved)
2309 fprintf (file, " resolved");
2310 else if (sym->sy_resolving)
2311 fprintf (file, " resolving");
2312 if (sym->sy_used_in_reloc)
2313 fprintf (file, " used-in-reloc");
2315 fprintf (file, " used");
2316 if (S_IS_LOCAL (sym))
2317 fprintf (file, " local");
2318 if (S_IS_EXTERN (sym))
2319 fprintf (file, " extern");
2320 if (S_IS_DEBUG (sym))
2321 fprintf (file, " debug");
2322 if (S_IS_DEFINED (sym))
2323 fprintf (file, " defined");
2325 fprintf (file, " %s", segment_name (S_GET_SEGMENT (sym)));
2326 if (symbol_resolved_p (sym))
2328 segT s = S_GET_SEGMENT (sym);
2330 if (s != undefined_section
2331 && s != expr_section)
2332 fprintf (file, " %lx", (long) S_GET_VALUE (sym));
2334 else if (indent_level < max_indent_level
2335 && S_GET_SEGMENT (sym) != undefined_section)
2338 fprintf (file, "\n%*s<", indent_level * 4, "");
2339 #ifdef BFD_ASSEMBLER
2340 if (LOCAL_SYMBOL_CHECK (sym))
2341 fprintf (file, "constant %lx",
2342 (long) ((struct local_symbol *) sym)->lsy_offset);
2345 print_expr_1 (file, &sym->sy_value);
2346 fprintf (file, ">");
2353 print_symbol_value (sym)
2357 print_symbol_value_1 (stderr, sym);
2358 fprintf (stderr, "\n");
2362 print_binary (file, name, exp)
2368 fprintf (file, "%s\n%*s<", name, indent_level * 4, "");
2369 print_symbol_value_1 (file, exp->X_add_symbol);
2370 fprintf (file, ">\n%*s<", indent_level * 4, "");
2371 print_symbol_value_1 (file, exp->X_op_symbol);
2372 fprintf (file, ">");
2377 print_expr_1 (file, exp)
2381 fprintf (file, "expr %lx ", (long) exp);
2385 fprintf (file, "illegal");
2388 fprintf (file, "absent");
2391 fprintf (file, "constant %lx", (long) exp->X_add_number);
2395 fprintf (file, "symbol\n%*s<", indent_level * 4, "");
2396 print_symbol_value_1 (file, exp->X_add_symbol);
2397 fprintf (file, ">");
2399 if (exp->X_add_number)
2400 fprintf (file, "\n%*s%lx", indent_level * 4, "",
2401 (long) exp->X_add_number);
2405 fprintf (file, "register #%d", (int) exp->X_add_number);
2408 fprintf (file, "big");
2411 fprintf (file, "uminus -<");
2413 print_symbol_value_1 (file, exp->X_add_symbol);
2414 fprintf (file, ">");
2415 goto maybe_print_addnum;
2417 fprintf (file, "bit_not");
2420 print_binary (file, "multiply", exp);
2423 print_binary (file, "divide", exp);
2426 print_binary (file, "modulus", exp);
2429 print_binary (file, "lshift", exp);
2432 print_binary (file, "rshift", exp);
2434 case O_bit_inclusive_or:
2435 print_binary (file, "bit_ior", exp);
2437 case O_bit_exclusive_or:
2438 print_binary (file, "bit_xor", exp);
2441 print_binary (file, "bit_and", exp);
2444 print_binary (file, "eq", exp);
2447 print_binary (file, "ne", exp);
2450 print_binary (file, "lt", exp);
2453 print_binary (file, "le", exp);
2456 print_binary (file, "ge", exp);
2459 print_binary (file, "gt", exp);
2462 print_binary (file, "logical_and", exp);
2465 print_binary (file, "logical_or", exp);
2469 fprintf (file, "add\n%*s<", indent_level * 4, "");
2470 print_symbol_value_1 (file, exp->X_add_symbol);
2471 fprintf (file, ">\n%*s<", indent_level * 4, "");
2472 print_symbol_value_1 (file, exp->X_op_symbol);
2473 fprintf (file, ">");
2474 goto maybe_print_addnum;
2477 fprintf (file, "subtract\n%*s<", indent_level * 4, "");
2478 print_symbol_value_1 (file, exp->X_add_symbol);
2479 fprintf (file, ">\n%*s<", indent_level * 4, "");
2480 print_symbol_value_1 (file, exp->X_op_symbol);
2481 fprintf (file, ">");
2482 goto maybe_print_addnum;
2484 fprintf (file, "{unknown opcode %d}", (int) exp->X_op);
2494 print_expr_1 (stderr, exp);
2495 fprintf (stderr, "\n");
2499 symbol_print_statistics (file)
2502 hash_print_statistics (file, "symbol table", sy_hash);
2503 #ifdef BFD_ASSEMBLER
2504 hash_print_statistics (file, "mini local symbol table", local_hash);
2505 fprintf (file, "%lu mini local symbols created, %lu converted\n",
2506 local_symbol_count, local_symbol_conversion_count);
2510 /* end of symbols.c */