1 /* symbols.c -symbol table-
2 Copyright (C) 1987, 90, 91, 92, 93, 94, 95, 96, 97, 98, 1999
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))
357 struct local_symbol *locsym = (struct local_symbol *) symbolP;
359 if (locsym->lsy_section != undefined_section
360 && (local_symbol_get_frag (locsym) != frag_now
361 || locsym->lsy_section != now_seg
362 || locsym->lsy_offset != frag_now_fix ()))
364 as_bad (_("Symbol %s already defined."), sym_name);
368 locsym->lsy_section = now_seg;
369 local_symbol_set_frag (locsym, frag_now);
370 locsym->lsy_offset = frag_now_fix ();
372 else if (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP))
374 if (S_GET_VALUE (symbolP) == 0)
376 symbolP->sy_frag = frag_now;
378 S_SET_OTHER(symbolP, const_flag);
380 S_SET_VALUE (symbolP, (valueT) frag_now_fix ());
381 S_SET_SEGMENT (symbolP, now_seg);
384 #endif /* if we have one, it better be zero. */
390 * There are still several cases to check:
391 * A .comm/.lcomm symbol being redefined as
392 * initialized data is OK
393 * A .comm/.lcomm symbol being redefined with
394 * a larger size is also OK
396 * This only used to be allowed on VMS gas, but Sun cc
397 * on the sparc also depends on it.
400 if (((!S_IS_DEBUG (symbolP)
401 && (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP))
402 && S_IS_EXTERNAL (symbolP))
403 || S_GET_SEGMENT (symbolP) == bss_section)
404 && (now_seg == data_section
405 || now_seg == S_GET_SEGMENT (symbolP)))
408 * Select which of the 2 cases this is
410 if (now_seg != data_section)
413 * New .comm for prev .comm symbol.
414 * If the new size is larger we just
415 * change its value. If the new size
416 * is smaller, we ignore this symbol
418 if (S_GET_VALUE (symbolP)
419 < ((unsigned) frag_now_fix ()))
421 S_SET_VALUE (symbolP, (valueT) frag_now_fix ());
426 /* It is a .comm/.lcomm being converted to initialized
428 symbolP->sy_frag = frag_now;
430 S_SET_OTHER(symbolP, const_flag);
432 S_SET_VALUE (symbolP, (valueT) frag_now_fix ());
433 S_SET_SEGMENT (symbolP, now_seg); /* keep N_EXT bit */
438 #if defined (S_GET_OTHER) && defined (S_GET_DESC)
439 as_fatal (_("Symbol \"%s\" is already defined as \"%s\"/%d.%d.%ld."),
441 segment_name (S_GET_SEGMENT (symbolP)),
442 S_GET_OTHER (symbolP), S_GET_DESC (symbolP),
443 (long) S_GET_VALUE (symbolP));
445 as_fatal (_("Symbol \"%s\" is already defined as \"%s\"/%ld."),
447 segment_name (S_GET_SEGMENT (symbolP)),
448 (long) S_GET_VALUE (symbolP));
451 } /* if the undefined symbol has no value */
455 /* Don't blow up if the definition is the same */
456 if (!(frag_now == symbolP->sy_frag
457 && S_GET_VALUE (symbolP) == frag_now_fix ()
458 && S_GET_SEGMENT (symbolP) == now_seg))
459 as_fatal (_("Symbol %s already defined."), sym_name);
460 } /* if this symbol is not yet defined */
464 else if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, sym_name))
466 symbolP = (symbolS *) local_symbol_make (sym_name, now_seg,
467 (valueT) frag_now_fix (),
470 #endif /* BFD_ASSEMBLER */
473 symbolP = symbol_new (sym_name, now_seg, (valueT) frag_now_fix (),
476 S_SET_OTHER (symbolP, const_flag);
479 symbol_table_insert (symbolP);
480 } /* if we have seen this symbol before */
482 if (mri_common_symbol != NULL)
484 /* This symbol is actually being defined within an MRI common
485 section. This requires special handling. */
486 if (LOCAL_SYMBOL_CHECK (symbolP))
487 symbolP = local_symbol_convert ((struct local_symbol *) symbolP);
488 symbolP->sy_value.X_op = O_symbol;
489 symbolP->sy_value.X_add_symbol = mri_common_symbol;
490 symbolP->sy_value.X_add_number = S_GET_VALUE (mri_common_symbol);
491 symbolP->sy_frag = &zero_address_frag;
492 S_SET_SEGMENT (symbolP, expr_section);
493 symbolP->sy_mri_common = 1;
497 tc_frob_label (symbolP);
499 #ifdef obj_frob_label
500 obj_frob_label (symbolP);
508 * symbol_table_insert()
510 * Die if we can't insert the symbol.
515 symbol_table_insert (symbolP)
518 register const char *error_string;
521 know (S_GET_NAME (symbolP));
523 if (LOCAL_SYMBOL_CHECK (symbolP))
525 error_string = hash_jam (local_hash, S_GET_NAME (symbolP),
527 if (error_string != NULL)
528 as_fatal (_("Inserting \"%s\" into symbol table failed: %s"),
529 S_GET_NAME (symbolP), error_string);
533 if ((error_string = hash_jam (sy_hash, S_GET_NAME (symbolP), (PTR) symbolP)))
535 as_fatal (_("Inserting \"%s\" into symbol table failed: %s"),
536 S_GET_NAME (symbolP), error_string);
538 } /* symbol_table_insert() */
541 * symbol_find_or_make()
543 * If a symbol name does not exist, create it as undefined, and insert
544 * it into the symbol table. Return a pointer to it.
547 symbol_find_or_make (name)
550 register symbolS *symbolP;
552 symbolP = symbol_find (name);
557 if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, name))
559 symbolP = md_undefined_symbol ((char *) name);
563 symbolP = (symbolS *) local_symbol_make (name, undefined_section,
570 symbolP = symbol_make (name);
572 symbol_table_insert (symbolP);
573 } /* if symbol wasn't found */
576 } /* symbol_find_or_make() */
584 /* Let the machine description default it, e.g. for register names. */
585 symbolP = md_undefined_symbol ((char *) name);
588 symbolP = symbol_new (name, undefined_section, (valueT) 0, &zero_address_frag);
591 } /* symbol_make() */
596 * Implement symbol table lookup.
597 * In: A symbol's name as a string: '\0' can't be part of a symbol name.
598 * Out: NULL if the name was not in the symbol table, else the address
599 * of a struct symbol associated with that name.
606 #ifdef STRIP_UNDERSCORE
607 return (symbol_find_base (name, 1));
608 #else /* STRIP_UNDERSCORE */
609 return (symbol_find_base (name, 0));
610 #endif /* STRIP_UNDERSCORE */
611 } /* symbol_find() */
614 symbol_find_base (name, strip_underscore)
616 int strip_underscore;
618 struct local_symbol *locsym;
620 if (strip_underscore && *name == '_')
623 #ifdef tc_canonicalize_symbol_name
626 size_t len = strlen (name) + 1;
628 copy = (char *) alloca (len);
629 memcpy (copy, name, len);
630 name = tc_canonicalize_symbol_name (copy);
634 if (! symbols_case_sensitive)
641 name = copy = (char *) alloca (strlen (name) + 1);
643 while ((c = *orig++) != '\0')
652 locsym = (struct local_symbol *) hash_find (local_hash, name);
654 return (symbolS *) locsym;
656 return ((symbolS *) hash_find (sy_hash, name));
660 * Once upon a time, symbols were kept in a singly linked list. At
661 * least coff needs to be able to rearrange them from time to time, for
662 * which a doubly linked list is much more convenient. Loic did these
663 * as macros which seemed dangerous to me so they're now functions.
667 /* Link symbol ADDME after symbol TARGET in the chain. */
669 symbol_append (addme, target, rootPP, lastPP)
675 if (LOCAL_SYMBOL_CHECK (addme))
677 if (target != NULL && LOCAL_SYMBOL_CHECK (target))
682 know (*rootPP == NULL);
683 know (*lastPP == NULL);
684 addme->sy_next = NULL;
685 #ifdef SYMBOLS_NEED_BACKPOINTERS
686 addme->sy_previous = NULL;
691 } /* if the list is empty */
693 if (target->sy_next != NULL)
695 #ifdef SYMBOLS_NEED_BACKPOINTERS
696 target->sy_next->sy_previous = addme;
697 #endif /* SYMBOLS_NEED_BACKPOINTERS */
701 know (*lastPP == target);
703 } /* if we have a next */
705 addme->sy_next = target->sy_next;
706 target->sy_next = addme;
708 #ifdef SYMBOLS_NEED_BACKPOINTERS
709 addme->sy_previous = target;
710 #endif /* SYMBOLS_NEED_BACKPOINTERS */
712 debug_verify_symchain (symbol_rootP, symbol_lastP);
715 /* Set the chain pointers of SYMBOL to null. */
717 symbol_clear_list_pointers (symbolP)
720 if (LOCAL_SYMBOL_CHECK (symbolP))
722 symbolP->sy_next = NULL;
723 #ifdef SYMBOLS_NEED_BACKPOINTERS
724 symbolP->sy_previous = NULL;
728 #ifdef SYMBOLS_NEED_BACKPOINTERS
729 /* Remove SYMBOLP from the list. */
731 symbol_remove (symbolP, rootPP, lastPP)
736 if (LOCAL_SYMBOL_CHECK (symbolP))
739 if (symbolP == *rootPP)
741 *rootPP = symbolP->sy_next;
742 } /* if it was the root */
744 if (symbolP == *lastPP)
746 *lastPP = symbolP->sy_previous;
747 } /* if it was the tail */
749 if (symbolP->sy_next != NULL)
751 symbolP->sy_next->sy_previous = symbolP->sy_previous;
754 if (symbolP->sy_previous != NULL)
756 symbolP->sy_previous->sy_next = symbolP->sy_next;
759 debug_verify_symchain (*rootPP, *lastPP);
762 /* Link symbol ADDME before symbol TARGET in the chain. */
764 symbol_insert (addme, target, rootPP, lastPP)
770 if (LOCAL_SYMBOL_CHECK (addme))
772 if (LOCAL_SYMBOL_CHECK (target))
775 if (target->sy_previous != NULL)
777 target->sy_previous->sy_next = addme;
781 know (*rootPP == target);
785 addme->sy_previous = target->sy_previous;
786 target->sy_previous = addme;
787 addme->sy_next = target;
789 debug_verify_symchain (*rootPP, *lastPP);
792 #endif /* SYMBOLS_NEED_BACKPOINTERS */
795 verify_symbol_chain (rootP, lastP)
799 symbolS *symbolP = rootP;
804 for (; symbol_next (symbolP) != NULL; symbolP = symbol_next (symbolP))
807 assert (symbolP->bsym != NULL);
809 #ifdef SYMBOLS_NEED_BACKPOINTERS
810 assert (symbolP->sy_next->sy_previous == symbolP);
812 /* Walk the list anyways, to make sure pointers are still good. */
814 #endif /* SYMBOLS_NEED_BACKPOINTERS */
817 assert (lastP == symbolP);
821 verify_symbol_chain_2 (sym)
824 symbolS *p = sym, *n = sym;
825 #ifdef SYMBOLS_NEED_BACKPOINTERS
826 while (symbol_previous (p))
827 p = symbol_previous (p);
829 while (symbol_next (n))
831 verify_symbol_chain (p, n);
834 /* Resolve the value of a symbol. This is called during the final
835 pass over the symbol table to resolve any symbols with complex
839 resolve_symbol_value (symp, finalize)
847 if (LOCAL_SYMBOL_CHECK (symp))
849 struct local_symbol *locsym = (struct local_symbol *) symp;
851 if (local_symbol_resolved_p (locsym))
852 return locsym->lsy_offset;
854 final_val = (local_symbol_get_frag (locsym)->fr_address
855 + locsym->lsy_offset);
859 locsym->lsy_offset = final_val;
860 local_symbol_mark_resolved (locsym);
866 if (symp->sy_resolved)
868 if (symp->sy_value.X_op == O_constant)
869 return (valueT) symp->sy_value.X_add_number;
875 final_seg = S_GET_SEGMENT (symp);
877 if (symp->sy_resolving)
880 as_bad (_("Symbol definition loop encountered at %s"), S_GET_NAME (symp));
886 symbolS *add_symbol, *op_symbol;
888 segT seg_left, seg_right;
891 symp->sy_resolving = 1;
893 /* Help out with CSE. */
894 add_symbol = symp->sy_value.X_add_symbol;
895 op_symbol = symp->sy_value.X_op_symbol;
896 final_val = symp->sy_value.X_add_number;
897 op = symp->sy_value.X_op;
910 final_val += symp->sy_frag->fr_address;
911 if (final_seg == expr_section)
912 final_seg = absolute_section;
918 left = resolve_symbol_value (add_symbol, finalize);
921 if (symp->sy_mri_common)
923 /* This is a symbol inside an MRI common section. The
924 relocation routines are going to handle it specially.
925 Don't change the value. */
926 resolved = symbol_resolved_p (add_symbol);
930 if (finalize && final_val == 0)
932 if (LOCAL_SYMBOL_CHECK (add_symbol))
933 add_symbol = local_symbol_convert ((struct local_symbol *)
935 copy_symbol_attributes (symp, add_symbol);
938 /* If we have equated this symbol to an undefined symbol, we
939 keep X_op set to O_symbol, and we don't change
940 X_add_number. This permits the routine which writes out
941 relocation to detect this case, and convert the
942 relocation to be against the symbol to which this symbol
944 if (! S_IS_DEFINED (add_symbol) || S_IS_COMMON (add_symbol))
948 S_SET_SEGMENT (symp, S_GET_SEGMENT (add_symbol));
949 symp->sy_value.X_op = O_symbol;
950 symp->sy_value.X_add_symbol = add_symbol;
951 symp->sy_value.X_add_number = final_val;
954 resolved = symbol_resolved_p (add_symbol);
955 goto exit_dont_set_value;
959 final_val += symp->sy_frag->fr_address + left;
960 if (final_seg == expr_section || final_seg == undefined_section)
961 final_seg = S_GET_SEGMENT (add_symbol);
964 resolved = symbol_resolved_p (add_symbol);
970 left = resolve_symbol_value (add_symbol, finalize);
974 else if (op == O_logical_not)
979 final_val += left + symp->sy_frag->fr_address;
980 if (final_seg == expr_section || final_seg == undefined_section)
981 final_seg = absolute_section;
983 resolved = symbol_resolved_p (add_symbol);
991 case O_bit_inclusive_or:
993 case O_bit_exclusive_or:
1005 left = resolve_symbol_value (add_symbol, finalize);
1006 right = resolve_symbol_value (op_symbol, finalize);
1007 seg_left = S_GET_SEGMENT (add_symbol);
1008 seg_right = S_GET_SEGMENT (op_symbol);
1010 /* Simplify addition or subtraction of a constant by folding the
1011 constant into X_add_number. */
1012 if (op == O_add || op == O_subtract)
1014 if (seg_right == absolute_section)
1024 else if (seg_left == absolute_section && op == O_add)
1028 add_symbol = op_symbol;
1035 /* Subtraction is permitted if both operands are in the same
1036 section. Otherwise, both operands must be absolute. We
1037 already handled the case of addition or subtraction of a
1038 constant above. This will probably need to be changed
1039 for an object file format which supports arbitrary
1040 expressions, such as IEEE-695. */
1041 /* Don't emit messages unless we're finalizing the symbol value,
1042 otherwise we may get the same message multiple times. */
1043 if ((seg_left != absolute_section || seg_right != absolute_section)
1044 && (op != O_subtract || seg_left != seg_right)
1050 if (expr_symbol_where (symp, &file, &line))
1052 if (seg_left == undefined_section)
1053 as_bad_where (file, line,
1054 _("undefined symbol %s in operation"),
1055 S_GET_NAME (symp->sy_value.X_add_symbol));
1056 if (seg_right == undefined_section)
1057 as_bad_where (file, line,
1058 _("undefined symbol %s in operation"),
1059 S_GET_NAME (symp->sy_value.X_op_symbol));
1060 if (seg_left != undefined_section
1061 && seg_right != undefined_section)
1062 as_bad_where (file, line, _("invalid section for operation"));
1066 if (seg_left == undefined_section)
1067 as_bad (_("undefined symbol %s in operation setting %s"),
1068 S_GET_NAME (symp->sy_value.X_add_symbol),
1070 if (seg_right == undefined_section)
1071 as_bad (_("undefined symbol %s in operation setting %s"),
1072 S_GET_NAME (symp->sy_value.X_op_symbol),
1074 if (seg_left != undefined_section
1075 && seg_right != undefined_section)
1076 as_bad (_("invalid section for operation setting %s"),
1081 /* Check for division by zero. */
1082 if ((op == O_divide || op == O_modulus) && right == 0)
1084 /* If seg_right is not absolute_section, then we've
1085 already issued a warning about using a bad symbol. */
1086 if (seg_right == absolute_section && finalize)
1091 if (expr_symbol_where (symp, &file, &line))
1092 as_bad_where (file, line, _("division by zero"));
1094 as_bad (_("division by zero when setting %s"),
1101 switch (symp->sy_value.X_op)
1103 case O_multiply: left *= right; break;
1104 case O_divide: left /= right; break;
1105 case O_modulus: left %= right; break;
1106 case O_left_shift: left <<= right; break;
1107 case O_right_shift: left >>= right; break;
1108 case O_bit_inclusive_or: left |= right; break;
1109 case O_bit_or_not: left |= ~right; break;
1110 case O_bit_exclusive_or: left ^= right; break;
1111 case O_bit_and: left &= right; break;
1112 case O_add: left += right; break;
1113 case O_subtract: left -= right; break;
1114 case O_eq: left = left == right ? ~ (offsetT) 0 : 0; break;
1115 case O_ne: left = left != right ? ~ (offsetT) 0 : 0; break;
1116 case O_lt: left = left < right ? ~ (offsetT) 0 : 0; break;
1117 case O_le: left = left <= right ? ~ (offsetT) 0 : 0; break;
1118 case O_ge: left = left >= right ? ~ (offsetT) 0 : 0; break;
1119 case O_gt: left = left > right ? ~ (offsetT) 0 : 0; break;
1120 case O_logical_and: left = left && right; break;
1121 case O_logical_or: left = left || right; break;
1125 final_val += symp->sy_frag->fr_address + left;
1126 if (final_seg == expr_section || final_seg == undefined_section)
1127 final_seg = absolute_section;
1128 resolved = (symbol_resolved_p (add_symbol)
1129 && symbol_resolved_p (op_symbol));
1135 /* Give an error (below) if not in expr_section. We don't
1136 want to worry about expr_section symbols, because they
1137 are fictional (they are created as part of expression
1138 resolution), and any problems may not actually mean
1143 symp->sy_resolving = 0;
1148 S_SET_VALUE (symp, final_val);
1150 #if defined (OBJ_AOUT) && ! defined (BFD_ASSEMBLER)
1151 /* The old a.out backend does not handle S_SET_SEGMENT correctly
1152 for a stab symbol, so we use this bad hack. */
1153 if (final_seg != S_GET_SEGMENT (symp))
1155 S_SET_SEGMENT (symp, final_seg);
1158 exit_dont_set_value:
1159 /* Don't worry if we can't resolve an expr_section symbol. */
1163 symp->sy_resolved = 1;
1164 else if (S_GET_SEGMENT (symp) != expr_section)
1166 as_bad (_("can't resolve value for symbol \"%s\""), S_GET_NAME (symp));
1167 symp->sy_resolved = 1;
1174 #ifdef BFD_ASSEMBLER
1176 static void resolve_local_symbol PARAMS ((const char *, PTR));
1178 /* A static function passed to hash_traverse. */
1181 resolve_local_symbol (key, value)
1186 resolve_symbol_value (value, 1);
1191 /* Resolve all local symbols. */
1194 resolve_local_symbol_values ()
1196 #ifdef BFD_ASSEMBLER
1197 hash_traverse (local_hash, resolve_local_symbol);
1201 /* Dollar labels look like a number followed by a dollar sign. Eg, "42$".
1202 They are *really* local. That is, they go out of scope whenever we see a
1203 label that isn't local. Also, like fb labels, there can be multiple
1204 instances of a dollar label. Therefor, we name encode each instance with
1205 the instance number, keep a list of defined symbols separate from the real
1206 symbol table, and we treat these buggers as a sparse array. */
1208 static long *dollar_labels;
1209 static long *dollar_label_instances;
1210 static char *dollar_label_defines;
1211 static unsigned long dollar_label_count;
1212 static unsigned long dollar_label_max;
1215 dollar_label_defined (label)
1220 know ((dollar_labels != NULL) || (dollar_label_count == 0));
1222 for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i)
1224 return dollar_label_defines[i - dollar_labels];
1226 /* if we get here, label isn't defined */
1228 } /* dollar_label_defined() */
1231 dollar_label_instance (label)
1236 know ((dollar_labels != NULL) || (dollar_label_count == 0));
1238 for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i)
1240 return (dollar_label_instances[i - dollar_labels]);
1242 /* If we get here, we haven't seen the label before, therefore its instance
1248 dollar_label_clear ()
1250 memset (dollar_label_defines, '\0', (unsigned int) dollar_label_count);
1253 #define DOLLAR_LABEL_BUMP_BY 10
1256 define_dollar_label (label)
1261 for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i)
1264 ++dollar_label_instances[i - dollar_labels];
1265 dollar_label_defines[i - dollar_labels] = 1;
1269 /* if we get to here, we don't have label listed yet. */
1271 if (dollar_labels == NULL)
1273 dollar_labels = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long));
1274 dollar_label_instances = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long));
1275 dollar_label_defines = xmalloc (DOLLAR_LABEL_BUMP_BY);
1276 dollar_label_max = DOLLAR_LABEL_BUMP_BY;
1277 dollar_label_count = 0;
1279 else if (dollar_label_count == dollar_label_max)
1281 dollar_label_max += DOLLAR_LABEL_BUMP_BY;
1282 dollar_labels = (long *) xrealloc ((char *) dollar_labels,
1283 dollar_label_max * sizeof (long));
1284 dollar_label_instances = (long *) xrealloc ((char *) dollar_label_instances,
1285 dollar_label_max * sizeof (long));
1286 dollar_label_defines = xrealloc (dollar_label_defines, dollar_label_max);
1287 } /* if we needed to grow */
1289 dollar_labels[dollar_label_count] = label;
1290 dollar_label_instances[dollar_label_count] = 1;
1291 dollar_label_defines[dollar_label_count] = 1;
1292 ++dollar_label_count;
1296 * dollar_label_name()
1298 * Caller must copy returned name: we re-use the area for the next name.
1300 * The mth occurence of label n: is turned into the symbol "Ln^Am"
1301 * where n is the label number and m is the instance number. "L" makes
1302 * it a label discarded unless debugging and "^A"('\1') ensures no
1303 * ordinary symbol SHOULD get the same name as a local label
1304 * symbol. The first "4:" is "L4^A1" - the m numbers begin at 1.
1306 * fb labels get the same treatment, except that ^B is used in place of ^A.
1309 char * /* Return local label name. */
1310 dollar_label_name (n, augend)
1311 register long n; /* we just saw "n$:" : n a number */
1312 register int augend; /* 0 for current instance, 1 for new instance */
1315 /* Returned to caller, then copied. used for created names ("4f") */
1316 static char symbol_name_build[24];
1319 char symbol_name_temporary[20]; /* build up a number, BACKWARDS */
1322 know (augend == 0 || augend == 1);
1323 p = symbol_name_build;
1326 /* Next code just does sprintf( {}, "%d", n); */
1328 q = symbol_name_temporary;
1329 for (*q++ = 0, i = n; i; ++q)
1334 while ((*p = *--q) != '\0')
1339 /* instance number */
1340 q = symbol_name_temporary;
1341 for (*q++ = 0, i = dollar_label_instance (n) + augend; i; ++q)
1346 while ((*p++ = *--q) != '\0');;
1348 /* The label, as a '\0' ended string, starts at symbol_name_build. */
1349 return symbol_name_build;
1353 * Sombody else's idea of local labels. They are made by "n:" where n
1354 * is any decimal digit. Refer to them with
1355 * "nb" for previous (backward) n:
1356 * or "nf" for next (forward) n:.
1358 * We do a little better and let n be any number, not just a single digit, but
1359 * since the other guy's assembler only does ten, we treat the first ten
1362 * Like someone else's assembler, we have one set of local label counters for
1363 * entire assembly, not one set per (sub)segment like in most assemblers. This
1364 * implies that one can refer to a label in another segment, and indeed some
1365 * crufty compilers have done just that.
1367 * Since there could be a LOT of these things, treat them as a sparse array.
1370 #define FB_LABEL_SPECIAL (10)
1372 static long fb_low_counter[FB_LABEL_SPECIAL];
1373 static long *fb_labels;
1374 static long *fb_label_instances;
1375 static long fb_label_count;
1376 static long fb_label_max;
1378 /* this must be more than FB_LABEL_SPECIAL */
1379 #define FB_LABEL_BUMP_BY (FB_LABEL_SPECIAL + 6)
1384 memset ((void *) fb_low_counter, '\0', sizeof (fb_low_counter));
1385 } /* fb_label_init() */
1387 /* add one to the instance number of this fb label */
1389 fb_label_instance_inc (label)
1394 if (label < FB_LABEL_SPECIAL)
1396 ++fb_low_counter[label];
1400 if (fb_labels != NULL)
1402 for (i = fb_labels + FB_LABEL_SPECIAL;
1403 i < fb_labels + fb_label_count; ++i)
1407 ++fb_label_instances[i - fb_labels];
1409 } /* if we find it */
1410 } /* for each existing label */
1413 /* if we get to here, we don't have label listed yet. */
1415 if (fb_labels == NULL)
1417 fb_labels = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long));
1418 fb_label_instances = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long));
1419 fb_label_max = FB_LABEL_BUMP_BY;
1420 fb_label_count = FB_LABEL_SPECIAL;
1423 else if (fb_label_count == fb_label_max)
1425 fb_label_max += FB_LABEL_BUMP_BY;
1426 fb_labels = (long *) xrealloc ((char *) fb_labels,
1427 fb_label_max * sizeof (long));
1428 fb_label_instances = (long *) xrealloc ((char *) fb_label_instances,
1429 fb_label_max * sizeof (long));
1430 } /* if we needed to grow */
1432 fb_labels[fb_label_count] = label;
1433 fb_label_instances[fb_label_count] = 1;
1438 fb_label_instance (label)
1443 if (label < FB_LABEL_SPECIAL)
1445 return (fb_low_counter[label]);
1448 if (fb_labels != NULL)
1450 for (i = fb_labels + FB_LABEL_SPECIAL;
1451 i < fb_labels + fb_label_count; ++i)
1455 return (fb_label_instances[i - fb_labels]);
1456 } /* if we find it */
1457 } /* for each existing label */
1460 /* We didn't find the label, so this must be a reference to the
1468 * Caller must copy returned name: we re-use the area for the next name.
1470 * The mth occurence of label n: is turned into the symbol "Ln^Bm"
1471 * where n is the label number and m is the instance number. "L" makes
1472 * it a label discarded unless debugging and "^B"('\2') ensures no
1473 * ordinary symbol SHOULD get the same name as a local label
1474 * symbol. The first "4:" is "L4^B1" - the m numbers begin at 1.
1476 * dollar labels get the same treatment, except that ^A is used in place of ^B. */
1478 char * /* Return local label name. */
1479 fb_label_name (n, augend)
1480 long n; /* we just saw "n:", "nf" or "nb" : n a number */
1481 long augend; /* 0 for nb, 1 for n:, nf */
1484 /* Returned to caller, then copied. used for created names ("4f") */
1485 static char symbol_name_build[24];
1488 char symbol_name_temporary[20]; /* build up a number, BACKWARDS */
1491 know (augend == 0 || augend == 1);
1492 p = symbol_name_build;
1495 /* Next code just does sprintf( {}, "%d", n); */
1497 q = symbol_name_temporary;
1498 for (*q++ = 0, i = n; i; ++q)
1503 while ((*p = *--q) != '\0')
1508 /* instance number */
1509 q = symbol_name_temporary;
1510 for (*q++ = 0, i = fb_label_instance (n) + augend; i; ++q)
1515 while ((*p++ = *--q) != '\0');;
1517 /* The label, as a '\0' ended string, starts at symbol_name_build. */
1518 return (symbol_name_build);
1519 } /* fb_label_name() */
1522 * decode name that may have been generated by foo_label_name() above. If
1523 * the name wasn't generated by foo_label_name(), then return it unaltered.
1524 * This is used for error messages.
1528 decode_local_label_name (s)
1532 char *symbol_decode;
1534 int instance_number;
1536 const char *message_format = _("\"%d\" (instance number %d of a %s label)");
1541 for (label_number = 0, p = s + 1; isdigit ((unsigned char) *p); ++p)
1542 label_number = (10 * label_number) + *p - '0';
1551 for (instance_number = 0, p++; isdigit ((unsigned char) *p); ++p)
1552 instance_number = (10 * instance_number) + *p - '0';
1554 symbol_decode = obstack_alloc (¬es, strlen (message_format) + 30);
1555 sprintf (symbol_decode, message_format, label_number, instance_number, type);
1557 return symbol_decode;
1560 /* Get the value of a symbol. */
1566 if (LOCAL_SYMBOL_CHECK (s))
1567 return ((struct local_symbol *) s)->lsy_offset;
1569 if (!s->sy_resolved && s->sy_value.X_op != O_constant)
1570 resolve_symbol_value (s, 1);
1571 if (s->sy_value.X_op != O_constant)
1573 static symbolS *recur;
1575 /* FIXME: In non BFD assemblers, S_IS_DEFINED and S_IS_COMMON
1576 may call S_GET_VALUE. We use a static symbol to avoid the
1577 immediate recursion. */
1579 return (valueT) s->sy_value.X_add_number;
1581 if (! s->sy_resolved
1582 || s->sy_value.X_op != O_symbol
1583 || (S_IS_DEFINED (s) && ! S_IS_COMMON (s)))
1584 as_bad (_("Attempt to get value of unresolved symbol %s"),
1588 return (valueT) s->sy_value.X_add_number;
1591 /* Set the value of a symbol. */
1594 S_SET_VALUE (s, val)
1598 if (LOCAL_SYMBOL_CHECK (s))
1600 ((struct local_symbol *) s)->lsy_offset = val;
1604 s->sy_value.X_op = O_constant;
1605 s->sy_value.X_add_number = (offsetT) val;
1606 s->sy_value.X_unsigned = 0;
1610 copy_symbol_attributes (dest, src)
1611 symbolS *dest, *src;
1613 if (LOCAL_SYMBOL_CHECK (dest))
1615 if (LOCAL_SYMBOL_CHECK (src))
1618 #ifdef BFD_ASSEMBLER
1619 /* In an expression, transfer the settings of these flags.
1620 The user can override later, of course. */
1621 #define COPIED_SYMFLAGS (BSF_FUNCTION | BSF_OBJECT)
1622 dest->bsym->flags |= src->bsym->flags & COPIED_SYMFLAGS;
1625 #ifdef OBJ_COPY_SYMBOL_ATTRIBUTES
1626 OBJ_COPY_SYMBOL_ATTRIBUTES (dest, src);
1630 #ifdef BFD_ASSEMBLER
1638 if (LOCAL_SYMBOL_CHECK (s))
1641 flags = s->bsym->flags;
1643 return (flags & BSF_FUNCTION) != 0;
1652 if (LOCAL_SYMBOL_CHECK (s))
1655 flags = s->bsym->flags;
1658 if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL))
1661 return (flags & BSF_GLOBAL) != 0;
1668 if (LOCAL_SYMBOL_CHECK (s))
1670 return (s->bsym->flags & BSF_WEAK) != 0;
1677 if (LOCAL_SYMBOL_CHECK (s))
1679 return bfd_is_com_section (s->bsym->section);
1686 if (LOCAL_SYMBOL_CHECK (s))
1687 return ((struct local_symbol *) s)->lsy_section != undefined_section;
1688 return s->bsym->section != undefined_section;
1695 if (LOCAL_SYMBOL_CHECK (s))
1697 if (s->bsym->flags & BSF_DEBUGGING)
1709 if (LOCAL_SYMBOL_CHECK (s))
1712 flags = s->bsym->flags;
1715 if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL))
1718 if (bfd_get_section (s->bsym) == reg_section)
1721 if (flag_strip_local_absolute
1722 && (flags & BSF_GLOBAL) == 0
1723 && bfd_get_section (s->bsym) == absolute_section)
1726 name = S_GET_NAME (s);
1727 return (name != NULL
1729 && (strchr (name, '\001')
1730 || strchr (name, '\002')
1731 || (! flag_keep_locals
1732 && (bfd_is_local_label (stdoutput, s->bsym)
1735 && name[1] == '?')))));
1742 return S_IS_EXTERNAL (s);
1749 return S_GET_NAME (s) == 0;
1756 if (LOCAL_SYMBOL_CHECK (s))
1757 return ((struct local_symbol *) s)->lsy_name;
1758 return s->bsym->name;
1765 if (LOCAL_SYMBOL_CHECK (s))
1766 return ((struct local_symbol *) s)->lsy_section;
1767 return s->bsym->section;
1771 S_SET_SEGMENT (s, seg)
1775 /* Don't reassign section symbols. The direct reason is to prevent seg
1776 faults assigning back to const global symbols such as *ABS*, but it
1777 shouldn't happen anyway. */
1779 if (LOCAL_SYMBOL_CHECK (s))
1781 if (seg == reg_section)
1782 s = local_symbol_convert ((struct local_symbol *) s);
1785 ((struct local_symbol *) s)->lsy_section = seg;
1790 if (s->bsym->flags & BSF_SECTION_SYM)
1792 if (s->bsym->section != seg)
1796 s->bsym->section = seg;
1803 if (LOCAL_SYMBOL_CHECK (s))
1804 s = local_symbol_convert ((struct local_symbol *) s);
1805 if ((s->bsym->flags & BSF_WEAK) != 0)
1807 /* Let .weak override .global. */
1810 s->bsym->flags |= BSF_GLOBAL;
1811 s->bsym->flags &= ~(BSF_LOCAL|BSF_WEAK);
1815 S_CLEAR_EXTERNAL (s)
1818 if (LOCAL_SYMBOL_CHECK (s))
1820 if ((s->bsym->flags & BSF_WEAK) != 0)
1822 /* Let .weak override. */
1825 s->bsym->flags |= BSF_LOCAL;
1826 s->bsym->flags &= ~(BSF_GLOBAL|BSF_WEAK);
1833 if (LOCAL_SYMBOL_CHECK (s))
1834 s = local_symbol_convert ((struct local_symbol *) s);
1835 s->bsym->flags |= BSF_WEAK;
1836 s->bsym->flags &= ~(BSF_GLOBAL|BSF_LOCAL);
1840 S_SET_NAME (s, name)
1844 if (LOCAL_SYMBOL_CHECK (s))
1846 ((struct local_symbol *) s)->lsy_name = name;
1849 s->bsym->name = name;
1851 #endif /* BFD_ASSEMBLER */
1853 #ifdef SYMBOLS_NEED_BACKPOINTERS
1855 /* Return the previous symbol in a chain. */
1861 if (LOCAL_SYMBOL_CHECK (s))
1863 return s->sy_previous;
1866 #endif /* SYMBOLS_NEED_BACKPOINTERS */
1868 /* Return the next symbol in a chain. */
1874 if (LOCAL_SYMBOL_CHECK (s))
1879 /* Return a pointer to the value of a symbol as an expression. */
1882 symbol_get_value_expression (s)
1885 if (LOCAL_SYMBOL_CHECK (s))
1886 s = local_symbol_convert ((struct local_symbol *) s);
1887 return &s->sy_value;
1890 /* Set the value of a symbol to an expression. */
1893 symbol_set_value_expression (s, exp)
1895 const expressionS *exp;
1897 if (LOCAL_SYMBOL_CHECK (s))
1898 s = local_symbol_convert ((struct local_symbol *) s);
1902 /* Set the frag of a symbol. */
1905 symbol_set_frag (s, f)
1909 if (LOCAL_SYMBOL_CHECK (s))
1911 local_symbol_set_frag ((struct local_symbol *) s, f);
1917 /* Return the frag of a symbol. */
1923 if (LOCAL_SYMBOL_CHECK (s))
1924 return local_symbol_get_frag ((struct local_symbol *) s);
1928 /* Mark a symbol as having been used. */
1931 symbol_mark_used (s)
1934 if (LOCAL_SYMBOL_CHECK (s))
1939 /* Clear the mark of whether a symbol has been used. */
1942 symbol_clear_used (s)
1945 if (LOCAL_SYMBOL_CHECK (s))
1946 s = local_symbol_convert ((struct local_symbol *) s);
1950 /* Return whether a symbol has been used. */
1956 if (LOCAL_SYMBOL_CHECK (s))
1961 /* Mark a symbol as having been used in a reloc. */
1964 symbol_mark_used_in_reloc (s)
1967 if (LOCAL_SYMBOL_CHECK (s))
1968 s = local_symbol_convert ((struct local_symbol *) s);
1969 s->sy_used_in_reloc = 1;
1972 /* Clear the mark of whether a symbol has been used in a reloc. */
1975 symbol_clear_used_in_reloc (s)
1978 if (LOCAL_SYMBOL_CHECK (s))
1980 s->sy_used_in_reloc = 0;
1983 /* Return whether a symbol has been used in a reloc. */
1986 symbol_used_in_reloc_p (s)
1989 if (LOCAL_SYMBOL_CHECK (s))
1991 return s->sy_used_in_reloc;
1994 /* Mark a symbol as an MRI common symbol. */
1997 symbol_mark_mri_common (s)
2000 if (LOCAL_SYMBOL_CHECK (s))
2001 s = local_symbol_convert ((struct local_symbol *) s);
2002 s->sy_mri_common = 1;
2005 /* Clear the mark of whether a symbol is an MRI common symbol. */
2008 symbol_clear_mri_common (s)
2011 if (LOCAL_SYMBOL_CHECK (s))
2013 s->sy_mri_common = 0;
2016 /* Return whether a symbol is an MRI common symbol. */
2019 symbol_mri_common_p (s)
2022 if (LOCAL_SYMBOL_CHECK (s))
2024 return s->sy_mri_common;
2027 /* Mark a symbol as having been written. */
2030 symbol_mark_written (s)
2033 if (LOCAL_SYMBOL_CHECK (s))
2038 /* Clear the mark of whether a symbol has been written. */
2041 symbol_clear_written (s)
2044 if (LOCAL_SYMBOL_CHECK (s))
2049 /* Return whether a symbol has been written. */
2052 symbol_written_p (s)
2055 if (LOCAL_SYMBOL_CHECK (s))
2060 /* Mark a symbol has having been resolved. */
2063 symbol_mark_resolved (s)
2066 if (LOCAL_SYMBOL_CHECK (s))
2068 local_symbol_mark_resolved ((struct local_symbol *) s);
2074 /* Return whether a symbol has been resolved. */
2077 symbol_resolved_p (s)
2080 if (LOCAL_SYMBOL_CHECK (s))
2081 return local_symbol_resolved_p ((struct local_symbol *) s);
2082 return s->sy_resolved;
2085 /* Return whether a symbol is a section symbol. */
2088 symbol_section_p (s)
2091 if (LOCAL_SYMBOL_CHECK (s))
2093 #ifdef BFD_ASSEMBLER
2094 return (s->bsym->flags & BSF_SECTION_SYM) != 0;
2101 /* Return whether a symbol is equated to another symbol. */
2104 symbol_equated_p (s)
2107 if (LOCAL_SYMBOL_CHECK (s))
2109 return s->sy_value.X_op == O_symbol;
2112 /* Return whether a symbol has a constant value. */
2115 symbol_constant_p (s)
2118 if (LOCAL_SYMBOL_CHECK (s))
2120 return s->sy_value.X_op == O_constant;
2123 #ifdef BFD_ASSEMBLER
2125 /* Return the BFD symbol for a symbol. */
2128 symbol_get_bfdsym (s)
2131 if (LOCAL_SYMBOL_CHECK (s))
2132 s = local_symbol_convert ((struct local_symbol *) s);
2136 /* Set the BFD symbol for a symbol. */
2139 symbol_set_bfdsym (s, bsym)
2143 if (LOCAL_SYMBOL_CHECK (s))
2144 s = local_symbol_convert ((struct local_symbol *) s);
2148 #endif /* BFD_ASSEMBLER */
2150 #ifdef OBJ_SYMFIELD_TYPE
2152 /* Get a pointer to the object format information for a symbol. */
2158 if (LOCAL_SYMBOL_CHECK (s))
2159 s = local_symbol_convert ((struct local_symbol *) s);
2163 /* Set the object format information for a symbol. */
2166 symbol_set_obj (s, o)
2168 OBJ_SYMFIELD_TYPE *o;
2170 if (LOCAL_SYMBOL_CHECK (s))
2171 s = local_symbol_convert ((struct local_symbol *) s);
2175 #endif /* OBJ_SYMFIELD_TYPE */
2177 #ifdef TC_SYMFIELD_TYPE
2179 /* Get a pointer to the processor information for a symbol. */
2185 if (LOCAL_SYMBOL_CHECK (s))
2186 s = local_symbol_convert ((struct local_symbol *) s);
2190 /* Set the processor information for a symbol. */
2193 symbol_set_obj (s, o)
2195 TC_SYMFIELD_TYPE *o;
2197 if (LOCAL_SYMBOL_CHECK (s))
2198 s = local_symbol_convert ((struct local_symbol *) s);
2202 #endif /* TC_SYMFIELD_TYPE */
2207 symbol_lastP = NULL;
2208 symbol_rootP = NULL; /* In case we have 0 symbols (!!) */
2209 sy_hash = hash_new ();
2210 #ifdef BFD_ASSEMBLER
2211 local_hash = hash_new ();
2214 memset ((char *) (&abs_symbol), '\0', sizeof (abs_symbol));
2215 #ifdef BFD_ASSEMBLER
2216 #if defined (EMIT_SECTION_SYMBOLS) || !defined (RELOC_REQUIRES_SYMBOL)
2217 abs_symbol.bsym = bfd_abs_section.symbol;
2220 /* Can't initialise a union. Sigh. */
2221 S_SET_SEGMENT (&abs_symbol, absolute_section);
2223 abs_symbol.sy_value.X_op = O_constant;
2224 abs_symbol.sy_frag = &zero_address_frag;
2226 if (LOCAL_LABELS_FB)
2234 /* Maximum indent level.
2235 Available for modification inside a gdb session. */
2236 int max_indent_level = 8;
2243 printf ("%*s", indent_level * 4, "");
2249 print_symbol_value_1 (file, sym)
2253 const char *name = S_GET_NAME (sym);
2254 if (!name || !name[0])
2256 fprintf (file, "sym %lx %s", (unsigned long) sym, name);
2258 if (LOCAL_SYMBOL_CHECK (sym))
2260 struct local_symbol *locsym = (struct local_symbol *) sym;
2261 if (local_symbol_get_frag (locsym) != &zero_address_frag
2262 && local_symbol_get_frag (locsym) != NULL)
2263 fprintf (file, " frag %lx", (long) local_symbol_get_frag (locsym));
2264 if (local_symbol_resolved_p (locsym))
2265 fprintf (file, " resolved");
2266 fprintf (file, " local");
2270 if (sym->sy_frag != &zero_address_frag)
2271 fprintf (file, " frag %lx", (long) sym->sy_frag);
2273 fprintf (file, " written");
2274 if (sym->sy_resolved)
2275 fprintf (file, " resolved");
2276 else if (sym->sy_resolving)
2277 fprintf (file, " resolving");
2278 if (sym->sy_used_in_reloc)
2279 fprintf (file, " used-in-reloc");
2281 fprintf (file, " used");
2282 if (S_IS_LOCAL (sym))
2283 fprintf (file, " local");
2284 if (S_IS_EXTERN (sym))
2285 fprintf (file, " extern");
2286 if (S_IS_DEBUG (sym))
2287 fprintf (file, " debug");
2288 if (S_IS_DEFINED (sym))
2289 fprintf (file, " defined");
2291 fprintf (file, " %s", segment_name (S_GET_SEGMENT (sym)));
2292 if (symbol_resolved_p (sym))
2294 segT s = S_GET_SEGMENT (sym);
2296 if (s != undefined_section
2297 && s != expr_section)
2298 fprintf (file, " %lx", (long) S_GET_VALUE (sym));
2300 else if (indent_level < max_indent_level
2301 && S_GET_SEGMENT (sym) != undefined_section)
2304 fprintf (file, "\n%*s<", indent_level * 4, "");
2305 if (LOCAL_SYMBOL_CHECK (sym))
2306 fprintf (file, "constant %lx",
2307 (long) ((struct local_symbol *) sym)->lsy_offset);
2309 print_expr_1 (file, &sym->sy_value);
2310 fprintf (file, ">");
2317 print_symbol_value (sym)
2321 print_symbol_value_1 (stderr, sym);
2322 fprintf (stderr, "\n");
2326 print_binary (file, name, exp)
2332 fprintf (file, "%s\n%*s<", name, indent_level * 4, "");
2333 print_symbol_value_1 (file, exp->X_add_symbol);
2334 fprintf (file, ">\n%*s<", indent_level * 4, "");
2335 print_symbol_value_1 (file, exp->X_op_symbol);
2336 fprintf (file, ">");
2341 print_expr_1 (file, exp)
2345 fprintf (file, "expr %lx ", (long) exp);
2349 fprintf (file, "illegal");
2352 fprintf (file, "absent");
2355 fprintf (file, "constant %lx", (long) exp->X_add_number);
2359 fprintf (file, "symbol\n%*s<", indent_level * 4, "");
2360 print_symbol_value_1 (file, exp->X_add_symbol);
2361 fprintf (file, ">");
2363 if (exp->X_add_number)
2364 fprintf (file, "\n%*s%lx", indent_level * 4, "",
2365 (long) exp->X_add_number);
2369 fprintf (file, "register #%d", (int) exp->X_add_number);
2372 fprintf (file, "big");
2375 fprintf (file, "uminus -<");
2377 print_symbol_value_1 (file, exp->X_add_symbol);
2378 fprintf (file, ">");
2379 goto maybe_print_addnum;
2381 fprintf (file, "bit_not");
2384 print_binary (file, "multiply", exp);
2387 print_binary (file, "divide", exp);
2390 print_binary (file, "modulus", exp);
2393 print_binary (file, "lshift", exp);
2396 print_binary (file, "rshift", exp);
2398 case O_bit_inclusive_or:
2399 print_binary (file, "bit_ior", exp);
2401 case O_bit_exclusive_or:
2402 print_binary (file, "bit_xor", exp);
2405 print_binary (file, "bit_and", exp);
2408 print_binary (file, "eq", exp);
2411 print_binary (file, "ne", exp);
2414 print_binary (file, "lt", exp);
2417 print_binary (file, "le", exp);
2420 print_binary (file, "ge", exp);
2423 print_binary (file, "gt", exp);
2426 print_binary (file, "logical_and", exp);
2429 print_binary (file, "logical_or", exp);
2433 fprintf (file, "add\n%*s<", indent_level * 4, "");
2434 print_symbol_value_1 (file, exp->X_add_symbol);
2435 fprintf (file, ">\n%*s<", indent_level * 4, "");
2436 print_symbol_value_1 (file, exp->X_op_symbol);
2437 fprintf (file, ">");
2438 goto maybe_print_addnum;
2441 fprintf (file, "subtract\n%*s<", indent_level * 4, "");
2442 print_symbol_value_1 (file, exp->X_add_symbol);
2443 fprintf (file, ">\n%*s<", indent_level * 4, "");
2444 print_symbol_value_1 (file, exp->X_op_symbol);
2445 fprintf (file, ">");
2446 goto maybe_print_addnum;
2448 fprintf (file, "{unknown opcode %d}", (int) exp->X_op);
2458 print_expr_1 (stderr, exp);
2459 fprintf (stderr, "\n");
2463 symbol_print_statistics (file)
2466 hash_print_statistics (file, "symbol table", sy_hash);
2467 #ifdef BFD_ASSEMBLER
2468 hash_print_statistics (file, "mini local symbol table", local_hash);
2469 fprintf (file, "%lu mini local symbols created, %lu converted\n",
2470 local_symbol_count, local_symbol_conversion_count);
2474 /* end of symbols.c */