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
))
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 (S_GET_OTHER) && defined (S_GET_DESC)
441 as_fatal (_("Symbol \"%s\" is already defined as \"%s\"/%d.%d.%ld."),
443 segment_name (S_GET_SEGMENT (symbolP
)),
444 S_GET_OTHER (symbolP
), S_GET_DESC (symbolP
),
445 (long) S_GET_VALUE (symbolP
));
447 as_fatal (_("Symbol \"%s\" is already defined as \"%s\"/%ld."),
449 segment_name (S_GET_SEGMENT (symbolP
)),
450 (long) S_GET_VALUE (symbolP
));
453 } /* if the undefined symbol has no value */
457 /* Don't blow up if the definition is the same */
458 if (!(frag_now
== symbolP
->sy_frag
459 && S_GET_VALUE (symbolP
) == frag_now_fix ()
460 && S_GET_SEGMENT (symbolP
) == now_seg
))
461 as_fatal (_("Symbol %s already defined."), sym_name
);
462 } /* if this symbol is not yet defined */
466 else if (! flag_keep_locals
&& bfd_is_local_label_name (stdoutput
, sym_name
))
468 symbolP
= (symbolS
*) local_symbol_make (sym_name
, now_seg
,
469 (valueT
) frag_now_fix (),
472 #endif /* BFD_ASSEMBLER */
475 symbolP
= symbol_new (sym_name
, now_seg
, (valueT
) frag_now_fix (),
478 S_SET_OTHER (symbolP
, const_flag
);
481 symbol_table_insert (symbolP
);
482 } /* if we have seen this symbol before */
484 if (mri_common_symbol
!= NULL
)
486 /* This symbol is actually being defined within an MRI common
487 section. This requires special handling. */
488 if (LOCAL_SYMBOL_CHECK (symbolP
))
489 symbolP
= local_symbol_convert ((struct local_symbol
*) symbolP
);
490 symbolP
->sy_value
.X_op
= O_symbol
;
491 symbolP
->sy_value
.X_add_symbol
= mri_common_symbol
;
492 symbolP
->sy_value
.X_add_number
= S_GET_VALUE (mri_common_symbol
);
493 symbolP
->sy_frag
= &zero_address_frag
;
494 S_SET_SEGMENT (symbolP
, expr_section
);
495 symbolP
->sy_mri_common
= 1;
499 tc_frob_label (symbolP
);
501 #ifdef obj_frob_label
502 obj_frob_label (symbolP
);
510 * symbol_table_insert()
512 * Die if we can't insert the symbol.
517 symbol_table_insert (symbolP
)
520 register const char *error_string
;
523 know (S_GET_NAME (symbolP
));
525 if (LOCAL_SYMBOL_CHECK (symbolP
))
527 error_string
= hash_jam (local_hash
, S_GET_NAME (symbolP
),
529 if (error_string
!= NULL
)
530 as_fatal (_("Inserting \"%s\" into symbol table failed: %s"),
531 S_GET_NAME (symbolP
), error_string
);
535 if ((error_string
= hash_jam (sy_hash
, S_GET_NAME (symbolP
), (PTR
) symbolP
)))
537 as_fatal (_("Inserting \"%s\" into symbol table failed: %s"),
538 S_GET_NAME (symbolP
), error_string
);
540 } /* symbol_table_insert() */
543 * symbol_find_or_make()
545 * If a symbol name does not exist, create it as undefined, and insert
546 * it into the symbol table. Return a pointer to it.
549 symbol_find_or_make (name
)
552 register symbolS
*symbolP
;
554 symbolP
= symbol_find (name
);
559 if (! flag_keep_locals
&& bfd_is_local_label_name (stdoutput
, name
))
561 symbolP
= md_undefined_symbol ((char *) name
);
565 symbolP
= (symbolS
*) local_symbol_make (name
, undefined_section
,
572 symbolP
= symbol_make (name
);
574 symbol_table_insert (symbolP
);
575 } /* if symbol wasn't found */
578 } /* symbol_find_or_make() */
586 /* Let the machine description default it, e.g. for register names. */
587 symbolP
= md_undefined_symbol ((char *) name
);
590 symbolP
= symbol_new (name
, undefined_section
, (valueT
) 0, &zero_address_frag
);
593 } /* symbol_make() */
598 * Implement symbol table lookup.
599 * In: A symbol's name as a string: '\0' can't be part of a symbol name.
600 * Out: NULL if the name was not in the symbol table, else the address
601 * of a struct symbol associated with that name.
608 #ifdef STRIP_UNDERSCORE
609 return (symbol_find_base (name
, 1));
610 #else /* STRIP_UNDERSCORE */
611 return (symbol_find_base (name
, 0));
612 #endif /* STRIP_UNDERSCORE */
613 } /* symbol_find() */
616 symbol_find_base (name
, strip_underscore
)
618 int strip_underscore
;
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')
654 struct local_symbol
*locsym
;
656 locsym
= (struct local_symbol
*) hash_find (local_hash
, name
);
658 return (symbolS
*) locsym
;
662 return ((symbolS
*) hash_find (sy_hash
, name
));
666 * Once upon a time, symbols were kept in a singly linked list. At
667 * least coff needs to be able to rearrange them from time to time, for
668 * which a doubly linked list is much more convenient. Loic did these
669 * as macros which seemed dangerous to me so they're now functions.
673 /* Link symbol ADDME after symbol TARGET in the chain. */
675 symbol_append (addme
, target
, rootPP
, lastPP
)
681 if (LOCAL_SYMBOL_CHECK (addme
))
683 if (target
!= NULL
&& LOCAL_SYMBOL_CHECK (target
))
688 know (*rootPP
== NULL
);
689 know (*lastPP
== NULL
);
690 addme
->sy_next
= NULL
;
691 #ifdef SYMBOLS_NEED_BACKPOINTERS
692 addme
->sy_previous
= NULL
;
697 } /* if the list is empty */
699 if (target
->sy_next
!= NULL
)
701 #ifdef SYMBOLS_NEED_BACKPOINTERS
702 target
->sy_next
->sy_previous
= addme
;
703 #endif /* SYMBOLS_NEED_BACKPOINTERS */
707 know (*lastPP
== target
);
709 } /* if we have a next */
711 addme
->sy_next
= target
->sy_next
;
712 target
->sy_next
= addme
;
714 #ifdef SYMBOLS_NEED_BACKPOINTERS
715 addme
->sy_previous
= target
;
716 #endif /* SYMBOLS_NEED_BACKPOINTERS */
718 debug_verify_symchain (symbol_rootP
, symbol_lastP
);
721 /* Set the chain pointers of SYMBOL to null. */
723 symbol_clear_list_pointers (symbolP
)
726 if (LOCAL_SYMBOL_CHECK (symbolP
))
728 symbolP
->sy_next
= NULL
;
729 #ifdef SYMBOLS_NEED_BACKPOINTERS
730 symbolP
->sy_previous
= NULL
;
734 #ifdef SYMBOLS_NEED_BACKPOINTERS
735 /* Remove SYMBOLP from the list. */
737 symbol_remove (symbolP
, rootPP
, lastPP
)
742 if (LOCAL_SYMBOL_CHECK (symbolP
))
745 if (symbolP
== *rootPP
)
747 *rootPP
= symbolP
->sy_next
;
748 } /* if it was the root */
750 if (symbolP
== *lastPP
)
752 *lastPP
= symbolP
->sy_previous
;
753 } /* if it was the tail */
755 if (symbolP
->sy_next
!= NULL
)
757 symbolP
->sy_next
->sy_previous
= symbolP
->sy_previous
;
760 if (symbolP
->sy_previous
!= NULL
)
762 symbolP
->sy_previous
->sy_next
= symbolP
->sy_next
;
765 debug_verify_symchain (*rootPP
, *lastPP
);
768 /* Link symbol ADDME before symbol TARGET in the chain. */
770 symbol_insert (addme
, target
, rootPP
, lastPP
)
776 if (LOCAL_SYMBOL_CHECK (addme
))
778 if (LOCAL_SYMBOL_CHECK (target
))
781 if (target
->sy_previous
!= NULL
)
783 target
->sy_previous
->sy_next
= addme
;
787 know (*rootPP
== target
);
791 addme
->sy_previous
= target
->sy_previous
;
792 target
->sy_previous
= addme
;
793 addme
->sy_next
= target
;
795 debug_verify_symchain (*rootPP
, *lastPP
);
798 #endif /* SYMBOLS_NEED_BACKPOINTERS */
801 verify_symbol_chain (rootP
, lastP
)
805 symbolS
*symbolP
= rootP
;
810 for (; symbol_next (symbolP
) != NULL
; symbolP
= symbol_next (symbolP
))
813 assert (symbolP
->bsym
!= NULL
);
815 #ifdef SYMBOLS_NEED_BACKPOINTERS
816 assert (symbolP
->sy_next
->sy_previous
== symbolP
);
818 /* Walk the list anyways, to make sure pointers are still good. */
820 #endif /* SYMBOLS_NEED_BACKPOINTERS */
823 assert (lastP
== symbolP
);
827 verify_symbol_chain_2 (sym
)
830 symbolS
*p
= sym
, *n
= sym
;
831 #ifdef SYMBOLS_NEED_BACKPOINTERS
832 while (symbol_previous (p
))
833 p
= symbol_previous (p
);
835 while (symbol_next (n
))
837 verify_symbol_chain (p
, n
);
840 /* Resolve the value of a symbol. This is called during the final
841 pass over the symbol table to resolve any symbols with complex
845 resolve_symbol_value (symp
, finalize
)
854 if (LOCAL_SYMBOL_CHECK (symp
))
856 struct local_symbol
*locsym
= (struct local_symbol
*) symp
;
858 if (local_symbol_resolved_p (locsym
))
859 return locsym
->lsy_offset
;
861 final_val
= (local_symbol_get_frag (locsym
)->fr_address
862 + locsym
->lsy_offset
);
866 locsym
->lsy_offset
= final_val
;
867 local_symbol_mark_resolved (locsym
);
874 if (symp
->sy_resolved
)
876 if (symp
->sy_value
.X_op
== O_constant
)
877 return (valueT
) symp
->sy_value
.X_add_number
;
883 final_seg
= S_GET_SEGMENT (symp
);
885 if (symp
->sy_resolving
)
888 as_bad (_("Symbol definition loop encountered at %s"), S_GET_NAME (symp
));
894 symbolS
*add_symbol
, *op_symbol
;
896 segT seg_left
, seg_right
;
899 symp
->sy_resolving
= 1;
901 /* Help out with CSE. */
902 add_symbol
= symp
->sy_value
.X_add_symbol
;
903 op_symbol
= symp
->sy_value
.X_op_symbol
;
904 final_val
= symp
->sy_value
.X_add_number
;
905 op
= symp
->sy_value
.X_op
;
918 final_val
+= symp
->sy_frag
->fr_address
;
919 if (final_seg
== expr_section
)
920 final_seg
= absolute_section
;
926 left
= resolve_symbol_value (add_symbol
, finalize
);
929 if (symp
->sy_mri_common
)
931 /* This is a symbol inside an MRI common section. The
932 relocation routines are going to handle it specially.
933 Don't change the value. */
934 resolved
= symbol_resolved_p (add_symbol
);
938 if (finalize
&& final_val
== 0)
940 if (LOCAL_SYMBOL_CHECK (add_symbol
))
941 add_symbol
= local_symbol_convert ((struct local_symbol
*)
943 copy_symbol_attributes (symp
, add_symbol
);
946 /* If we have equated this symbol to an undefined symbol, we
947 keep X_op set to O_symbol, and we don't change
948 X_add_number. This permits the routine which writes out
949 relocation to detect this case, and convert the
950 relocation to be against the symbol to which this symbol
952 if (! S_IS_DEFINED (add_symbol
) || S_IS_COMMON (add_symbol
))
956 S_SET_SEGMENT (symp
, S_GET_SEGMENT (add_symbol
));
957 symp
->sy_value
.X_op
= O_symbol
;
958 symp
->sy_value
.X_add_symbol
= add_symbol
;
959 symp
->sy_value
.X_add_number
= final_val
;
962 resolved
= symbol_resolved_p (add_symbol
);
963 goto exit_dont_set_value
;
967 final_val
+= symp
->sy_frag
->fr_address
+ left
;
968 if (final_seg
== expr_section
|| final_seg
== undefined_section
)
969 final_seg
= S_GET_SEGMENT (add_symbol
);
972 resolved
= symbol_resolved_p (add_symbol
);
978 left
= resolve_symbol_value (add_symbol
, finalize
);
982 else if (op
== O_logical_not
)
987 final_val
+= left
+ symp
->sy_frag
->fr_address
;
988 if (final_seg
== expr_section
|| final_seg
== undefined_section
)
989 final_seg
= absolute_section
;
991 resolved
= symbol_resolved_p (add_symbol
);
999 case O_bit_inclusive_or
:
1001 case O_bit_exclusive_or
:
1013 left
= resolve_symbol_value (add_symbol
, finalize
);
1014 right
= resolve_symbol_value (op_symbol
, finalize
);
1015 seg_left
= S_GET_SEGMENT (add_symbol
);
1016 seg_right
= S_GET_SEGMENT (op_symbol
);
1018 /* Simplify addition or subtraction of a constant by folding the
1019 constant into X_add_number. */
1020 if (op
== O_add
|| op
== O_subtract
)
1022 if (seg_right
== absolute_section
)
1032 else if (seg_left
== absolute_section
&& op
== O_add
)
1036 add_symbol
= op_symbol
;
1043 /* Subtraction is permitted if both operands are in the same
1044 section. Otherwise, both operands must be absolute. We
1045 already handled the case of addition or subtraction of a
1046 constant above. This will probably need to be changed
1047 for an object file format which supports arbitrary
1048 expressions, such as IEEE-695. */
1049 /* Don't emit messages unless we're finalizing the symbol value,
1050 otherwise we may get the same message multiple times. */
1051 if ((seg_left
!= absolute_section
1052 || seg_right
!= absolute_section
)
1053 && (op
!= O_subtract
1054 || seg_left
!= seg_right
1055 || seg_left
== undefined_section
)
1061 if (expr_symbol_where (symp
, &file
, &line
))
1063 if (seg_left
== undefined_section
)
1064 as_bad_where (file
, line
,
1065 _("undefined symbol %s in operation"),
1066 S_GET_NAME (symp
->sy_value
.X_add_symbol
));
1067 if (seg_right
== undefined_section
)
1068 as_bad_where (file
, line
,
1069 _("undefined symbol %s in operation"),
1070 S_GET_NAME (symp
->sy_value
.X_op_symbol
));
1071 if (seg_left
!= undefined_section
1072 && seg_right
!= undefined_section
)
1073 as_bad_where (file
, line
, _("invalid section for operation"));
1077 if (seg_left
== undefined_section
)
1078 as_bad (_("undefined symbol %s in operation setting %s"),
1079 S_GET_NAME (symp
->sy_value
.X_add_symbol
),
1081 if (seg_right
== undefined_section
)
1082 as_bad (_("undefined symbol %s in operation setting %s"),
1083 S_GET_NAME (symp
->sy_value
.X_op_symbol
),
1085 if (seg_left
!= undefined_section
1086 && seg_right
!= undefined_section
)
1087 as_bad (_("invalid section for operation setting %s"),
1092 /* Check for division by zero. */
1093 if ((op
== O_divide
|| op
== O_modulus
) && right
== 0)
1095 /* If seg_right is not absolute_section, then we've
1096 already issued a warning about using a bad symbol. */
1097 if (seg_right
== absolute_section
&& finalize
)
1102 if (expr_symbol_where (symp
, &file
, &line
))
1103 as_bad_where (file
, line
, _("division by zero"));
1105 as_bad (_("division by zero when setting %s"),
1112 switch (symp
->sy_value
.X_op
)
1114 case O_multiply
: left
*= right
; break;
1115 case O_divide
: left
/= right
; break;
1116 case O_modulus
: left
%= right
; break;
1117 case O_left_shift
: left
<<= right
; break;
1118 case O_right_shift
: left
>>= right
; break;
1119 case O_bit_inclusive_or
: left
|= right
; break;
1120 case O_bit_or_not
: left
|= ~right
; break;
1121 case O_bit_exclusive_or
: left
^= right
; break;
1122 case O_bit_and
: left
&= right
; break;
1123 case O_add
: left
+= right
; break;
1124 case O_subtract
: left
-= right
; break;
1125 case O_eq
: left
= left
== right
? ~ (offsetT
) 0 : 0; break;
1126 case O_ne
: left
= left
!= right
? ~ (offsetT
) 0 : 0; break;
1127 case O_lt
: left
= left
< right
? ~ (offsetT
) 0 : 0; break;
1128 case O_le
: left
= left
<= right
? ~ (offsetT
) 0 : 0; break;
1129 case O_ge
: left
= left
>= right
? ~ (offsetT
) 0 : 0; break;
1130 case O_gt
: left
= left
> right
? ~ (offsetT
) 0 : 0; break;
1131 case O_logical_and
: left
= left
&& right
; break;
1132 case O_logical_or
: left
= left
|| right
; break;
1136 final_val
+= symp
->sy_frag
->fr_address
+ left
;
1137 if (final_seg
== expr_section
|| final_seg
== undefined_section
)
1138 final_seg
= absolute_section
;
1139 resolved
= (symbol_resolved_p (add_symbol
)
1140 && symbol_resolved_p (op_symbol
));
1146 /* Give an error (below) if not in expr_section. We don't
1147 want to worry about expr_section symbols, because they
1148 are fictional (they are created as part of expression
1149 resolution), and any problems may not actually mean
1154 symp
->sy_resolving
= 0;
1159 S_SET_VALUE (symp
, final_val
);
1161 #if defined (OBJ_AOUT) && ! defined (BFD_ASSEMBLER)
1162 /* The old a.out backend does not handle S_SET_SEGMENT correctly
1163 for a stab symbol, so we use this bad hack. */
1164 if (final_seg
!= S_GET_SEGMENT (symp
))
1166 S_SET_SEGMENT (symp
, final_seg
);
1169 exit_dont_set_value
:
1170 /* Don't worry if we can't resolve an expr_section symbol. */
1174 symp
->sy_resolved
= 1;
1175 else if (S_GET_SEGMENT (symp
) != expr_section
)
1177 as_bad (_("can't resolve value for symbol \"%s\""), S_GET_NAME (symp
));
1178 symp
->sy_resolved
= 1;
1185 #ifdef BFD_ASSEMBLER
1187 static void resolve_local_symbol
PARAMS ((const char *, PTR
));
1189 /* A static function passed to hash_traverse. */
1192 resolve_local_symbol (key
, value
)
1197 resolve_symbol_value (value
, 1);
1202 /* Resolve all local symbols. */
1205 resolve_local_symbol_values ()
1207 #ifdef BFD_ASSEMBLER
1208 hash_traverse (local_hash
, resolve_local_symbol
);
1212 /* Dollar labels look like a number followed by a dollar sign. Eg, "42$".
1213 They are *really* local. That is, they go out of scope whenever we see a
1214 label that isn't local. Also, like fb labels, there can be multiple
1215 instances of a dollar label. Therefor, we name encode each instance with
1216 the instance number, keep a list of defined symbols separate from the real
1217 symbol table, and we treat these buggers as a sparse array. */
1219 static long *dollar_labels
;
1220 static long *dollar_label_instances
;
1221 static char *dollar_label_defines
;
1222 static unsigned long dollar_label_count
;
1223 static unsigned long dollar_label_max
;
1226 dollar_label_defined (label
)
1231 know ((dollar_labels
!= NULL
) || (dollar_label_count
== 0));
1233 for (i
= dollar_labels
; i
< dollar_labels
+ dollar_label_count
; ++i
)
1235 return dollar_label_defines
[i
- dollar_labels
];
1237 /* if we get here, label isn't defined */
1239 } /* dollar_label_defined() */
1242 dollar_label_instance (label
)
1247 know ((dollar_labels
!= NULL
) || (dollar_label_count
== 0));
1249 for (i
= dollar_labels
; i
< dollar_labels
+ dollar_label_count
; ++i
)
1251 return (dollar_label_instances
[i
- dollar_labels
]);
1253 /* If we get here, we haven't seen the label before, therefore its instance
1259 dollar_label_clear ()
1261 memset (dollar_label_defines
, '\0', (unsigned int) dollar_label_count
);
1264 #define DOLLAR_LABEL_BUMP_BY 10
1267 define_dollar_label (label
)
1272 for (i
= dollar_labels
; i
< dollar_labels
+ dollar_label_count
; ++i
)
1275 ++dollar_label_instances
[i
- dollar_labels
];
1276 dollar_label_defines
[i
- dollar_labels
] = 1;
1280 /* if we get to here, we don't have label listed yet. */
1282 if (dollar_labels
== NULL
)
1284 dollar_labels
= (long *) xmalloc (DOLLAR_LABEL_BUMP_BY
* sizeof (long));
1285 dollar_label_instances
= (long *) xmalloc (DOLLAR_LABEL_BUMP_BY
* sizeof (long));
1286 dollar_label_defines
= xmalloc (DOLLAR_LABEL_BUMP_BY
);
1287 dollar_label_max
= DOLLAR_LABEL_BUMP_BY
;
1288 dollar_label_count
= 0;
1290 else if (dollar_label_count
== dollar_label_max
)
1292 dollar_label_max
+= DOLLAR_LABEL_BUMP_BY
;
1293 dollar_labels
= (long *) xrealloc ((char *) dollar_labels
,
1294 dollar_label_max
* sizeof (long));
1295 dollar_label_instances
= (long *) xrealloc ((char *) dollar_label_instances
,
1296 dollar_label_max
* sizeof (long));
1297 dollar_label_defines
= xrealloc (dollar_label_defines
, dollar_label_max
);
1298 } /* if we needed to grow */
1300 dollar_labels
[dollar_label_count
] = label
;
1301 dollar_label_instances
[dollar_label_count
] = 1;
1302 dollar_label_defines
[dollar_label_count
] = 1;
1303 ++dollar_label_count
;
1307 * dollar_label_name()
1309 * Caller must copy returned name: we re-use the area for the next name.
1311 * The mth occurence of label n: is turned into the symbol "Ln^Am"
1312 * where n is the label number and m is the instance number. "L" makes
1313 * it a label discarded unless debugging and "^A"('\1') ensures no
1314 * ordinary symbol SHOULD get the same name as a local label
1315 * symbol. The first "4:" is "L4^A1" - the m numbers begin at 1.
1317 * fb labels get the same treatment, except that ^B is used in place of ^A.
1320 char * /* Return local label name. */
1321 dollar_label_name (n
, augend
)
1322 register long n
; /* we just saw "n$:" : n a number */
1323 register int augend
; /* 0 for current instance, 1 for new instance */
1326 /* Returned to caller, then copied. used for created names ("4f") */
1327 static char symbol_name_build
[24];
1330 char symbol_name_temporary
[20]; /* build up a number, BACKWARDS */
1333 know (augend
== 0 || augend
== 1);
1334 p
= symbol_name_build
;
1337 /* Next code just does sprintf( {}, "%d", n); */
1339 q
= symbol_name_temporary
;
1340 for (*q
++ = 0, i
= n
; i
; ++q
)
1345 while ((*p
= *--q
) != '\0')
1350 /* instance number */
1351 q
= symbol_name_temporary
;
1352 for (*q
++ = 0, i
= dollar_label_instance (n
) + augend
; i
; ++q
)
1357 while ((*p
++ = *--q
) != '\0');;
1359 /* The label, as a '\0' ended string, starts at symbol_name_build. */
1360 return symbol_name_build
;
1364 * Sombody else's idea of local labels. They are made by "n:" where n
1365 * is any decimal digit. Refer to them with
1366 * "nb" for previous (backward) n:
1367 * or "nf" for next (forward) n:.
1369 * We do a little better and let n be any number, not just a single digit, but
1370 * since the other guy's assembler only does ten, we treat the first ten
1373 * Like someone else's assembler, we have one set of local label counters for
1374 * entire assembly, not one set per (sub)segment like in most assemblers. This
1375 * implies that one can refer to a label in another segment, and indeed some
1376 * crufty compilers have done just that.
1378 * Since there could be a LOT of these things, treat them as a sparse array.
1381 #define FB_LABEL_SPECIAL (10)
1383 static long fb_low_counter
[FB_LABEL_SPECIAL
];
1384 static long *fb_labels
;
1385 static long *fb_label_instances
;
1386 static long fb_label_count
;
1387 static long fb_label_max
;
1389 /* this must be more than FB_LABEL_SPECIAL */
1390 #define FB_LABEL_BUMP_BY (FB_LABEL_SPECIAL + 6)
1395 memset ((void *) fb_low_counter
, '\0', sizeof (fb_low_counter
));
1396 } /* fb_label_init() */
1398 /* add one to the instance number of this fb label */
1400 fb_label_instance_inc (label
)
1405 if (label
< FB_LABEL_SPECIAL
)
1407 ++fb_low_counter
[label
];
1411 if (fb_labels
!= NULL
)
1413 for (i
= fb_labels
+ FB_LABEL_SPECIAL
;
1414 i
< fb_labels
+ fb_label_count
; ++i
)
1418 ++fb_label_instances
[i
- fb_labels
];
1420 } /* if we find it */
1421 } /* for each existing label */
1424 /* if we get to here, we don't have label listed yet. */
1426 if (fb_labels
== NULL
)
1428 fb_labels
= (long *) xmalloc (FB_LABEL_BUMP_BY
* sizeof (long));
1429 fb_label_instances
= (long *) xmalloc (FB_LABEL_BUMP_BY
* sizeof (long));
1430 fb_label_max
= FB_LABEL_BUMP_BY
;
1431 fb_label_count
= FB_LABEL_SPECIAL
;
1434 else if (fb_label_count
== fb_label_max
)
1436 fb_label_max
+= FB_LABEL_BUMP_BY
;
1437 fb_labels
= (long *) xrealloc ((char *) fb_labels
,
1438 fb_label_max
* sizeof (long));
1439 fb_label_instances
= (long *) xrealloc ((char *) fb_label_instances
,
1440 fb_label_max
* sizeof (long));
1441 } /* if we needed to grow */
1443 fb_labels
[fb_label_count
] = label
;
1444 fb_label_instances
[fb_label_count
] = 1;
1449 fb_label_instance (label
)
1454 if (label
< FB_LABEL_SPECIAL
)
1456 return (fb_low_counter
[label
]);
1459 if (fb_labels
!= NULL
)
1461 for (i
= fb_labels
+ FB_LABEL_SPECIAL
;
1462 i
< fb_labels
+ fb_label_count
; ++i
)
1466 return (fb_label_instances
[i
- fb_labels
]);
1467 } /* if we find it */
1468 } /* for each existing label */
1471 /* We didn't find the label, so this must be a reference to the
1479 * Caller must copy returned name: we re-use the area for the next name.
1481 * The mth occurence of label n: is turned into the symbol "Ln^Bm"
1482 * where n is the label number and m is the instance number. "L" makes
1483 * it a label discarded unless debugging and "^B"('\2') ensures no
1484 * ordinary symbol SHOULD get the same name as a local label
1485 * symbol. The first "4:" is "L4^B1" - the m numbers begin at 1.
1487 * dollar labels get the same treatment, except that ^A is used in place of ^B. */
1489 char * /* Return local label name. */
1490 fb_label_name (n
, augend
)
1491 long n
; /* we just saw "n:", "nf" or "nb" : n a number */
1492 long augend
; /* 0 for nb, 1 for n:, nf */
1495 /* Returned to caller, then copied. used for created names ("4f") */
1496 static char symbol_name_build
[24];
1499 char symbol_name_temporary
[20]; /* build up a number, BACKWARDS */
1502 know (augend
== 0 || augend
== 1);
1503 p
= symbol_name_build
;
1506 /* Next code just does sprintf( {}, "%d", n); */
1508 q
= symbol_name_temporary
;
1509 for (*q
++ = 0, i
= n
; i
; ++q
)
1514 while ((*p
= *--q
) != '\0')
1519 /* instance number */
1520 q
= symbol_name_temporary
;
1521 for (*q
++ = 0, i
= fb_label_instance (n
) + augend
; i
; ++q
)
1526 while ((*p
++ = *--q
) != '\0');;
1528 /* The label, as a '\0' ended string, starts at symbol_name_build. */
1529 return (symbol_name_build
);
1530 } /* fb_label_name() */
1533 * decode name that may have been generated by foo_label_name() above. If
1534 * the name wasn't generated by foo_label_name(), then return it unaltered.
1535 * This is used for error messages.
1539 decode_local_label_name (s
)
1543 char *symbol_decode
;
1545 int instance_number
;
1547 const char *message_format
= _("\"%d\" (instance number %d of a %s label)");
1552 for (label_number
= 0, p
= s
+ 1; isdigit ((unsigned char) *p
); ++p
)
1553 label_number
= (10 * label_number
) + *p
- '0';
1562 for (instance_number
= 0, p
++; isdigit ((unsigned char) *p
); ++p
)
1563 instance_number
= (10 * instance_number
) + *p
- '0';
1565 symbol_decode
= obstack_alloc (¬es
, strlen (message_format
) + 30);
1566 sprintf (symbol_decode
, message_format
, label_number
, instance_number
, type
);
1568 return symbol_decode
;
1571 /* Get the value of a symbol. */
1577 #ifdef BFD_ASSEMBLER
1578 if (LOCAL_SYMBOL_CHECK (s
))
1579 return ((struct local_symbol
*) s
)->lsy_offset
;
1582 if (!s
->sy_resolved
&& s
->sy_value
.X_op
!= O_constant
)
1583 resolve_symbol_value (s
, 1);
1584 if (s
->sy_value
.X_op
!= O_constant
)
1586 static symbolS
*recur
;
1588 /* FIXME: In non BFD assemblers, S_IS_DEFINED and S_IS_COMMON
1589 may call S_GET_VALUE. We use a static symbol to avoid the
1590 immediate recursion. */
1592 return (valueT
) s
->sy_value
.X_add_number
;
1594 if (! s
->sy_resolved
1595 || s
->sy_value
.X_op
!= O_symbol
1596 || (S_IS_DEFINED (s
) && ! S_IS_COMMON (s
)))
1597 as_bad (_("Attempt to get value of unresolved symbol %s"),
1601 return (valueT
) s
->sy_value
.X_add_number
;
1604 /* Set the value of a symbol. */
1607 S_SET_VALUE (s
, val
)
1611 #ifdef BFD_ASSEMBLER
1612 if (LOCAL_SYMBOL_CHECK (s
))
1614 ((struct local_symbol
*) s
)->lsy_offset
= val
;
1619 s
->sy_value
.X_op
= O_constant
;
1620 s
->sy_value
.X_add_number
= (offsetT
) val
;
1621 s
->sy_value
.X_unsigned
= 0;
1625 copy_symbol_attributes (dest
, src
)
1626 symbolS
*dest
, *src
;
1628 if (LOCAL_SYMBOL_CHECK (dest
))
1629 dest
= local_symbol_convert ((struct local_symbol
*) dest
);
1630 if (LOCAL_SYMBOL_CHECK (src
))
1631 src
= local_symbol_convert ((struct local_symbol
*) src
);
1633 #ifdef BFD_ASSEMBLER
1634 /* In an expression, transfer the settings of these flags.
1635 The user can override later, of course. */
1636 #define COPIED_SYMFLAGS (BSF_FUNCTION | BSF_OBJECT)
1637 dest
->bsym
->flags
|= src
->bsym
->flags
& COPIED_SYMFLAGS
;
1640 #ifdef OBJ_COPY_SYMBOL_ATTRIBUTES
1641 OBJ_COPY_SYMBOL_ATTRIBUTES (dest
, src
);
1645 #ifdef BFD_ASSEMBLER
1653 if (LOCAL_SYMBOL_CHECK (s
))
1656 flags
= s
->bsym
->flags
;
1658 return (flags
& BSF_FUNCTION
) != 0;
1667 if (LOCAL_SYMBOL_CHECK (s
))
1670 flags
= s
->bsym
->flags
;
1673 if ((flags
& BSF_LOCAL
) && (flags
& BSF_GLOBAL
))
1676 return (flags
& BSF_GLOBAL
) != 0;
1683 if (LOCAL_SYMBOL_CHECK (s
))
1685 return (s
->bsym
->flags
& BSF_WEAK
) != 0;
1692 if (LOCAL_SYMBOL_CHECK (s
))
1694 return bfd_is_com_section (s
->bsym
->section
);
1701 if (LOCAL_SYMBOL_CHECK (s
))
1702 return ((struct local_symbol
*) s
)->lsy_section
!= undefined_section
;
1703 return s
->bsym
->section
!= undefined_section
;
1710 if (LOCAL_SYMBOL_CHECK (s
))
1712 if (s
->bsym
->flags
& BSF_DEBUGGING
)
1724 if (LOCAL_SYMBOL_CHECK (s
))
1727 flags
= s
->bsym
->flags
;
1730 if ((flags
& BSF_LOCAL
) && (flags
& BSF_GLOBAL
))
1733 if (bfd_get_section (s
->bsym
) == reg_section
)
1736 if (flag_strip_local_absolute
1737 && (flags
& BSF_GLOBAL
) == 0
1738 && bfd_get_section (s
->bsym
) == absolute_section
)
1741 name
= S_GET_NAME (s
);
1742 return (name
!= NULL
1744 && (strchr (name
, '\001')
1745 || strchr (name
, '\002')
1746 || (! flag_keep_locals
1747 && (bfd_is_local_label (stdoutput
, s
->bsym
)
1750 && name
[1] == '?')))));
1757 return S_IS_EXTERNAL (s
);
1764 return S_GET_NAME (s
) == 0;
1771 if (LOCAL_SYMBOL_CHECK (s
))
1772 return ((struct local_symbol
*) s
)->lsy_name
;
1773 return s
->bsym
->name
;
1780 if (LOCAL_SYMBOL_CHECK (s
))
1781 return ((struct local_symbol
*) s
)->lsy_section
;
1782 return s
->bsym
->section
;
1786 S_SET_SEGMENT (s
, seg
)
1790 /* Don't reassign section symbols. The direct reason is to prevent seg
1791 faults assigning back to const global symbols such as *ABS*, but it
1792 shouldn't happen anyway. */
1794 if (LOCAL_SYMBOL_CHECK (s
))
1796 if (seg
== reg_section
)
1797 s
= local_symbol_convert ((struct local_symbol
*) s
);
1800 ((struct local_symbol
*) s
)->lsy_section
= seg
;
1805 if (s
->bsym
->flags
& BSF_SECTION_SYM
)
1807 if (s
->bsym
->section
!= seg
)
1811 s
->bsym
->section
= seg
;
1818 if (LOCAL_SYMBOL_CHECK (s
))
1819 s
= local_symbol_convert ((struct local_symbol
*) s
);
1820 if ((s
->bsym
->flags
& BSF_WEAK
) != 0)
1822 /* Let .weak override .global. */
1825 s
->bsym
->flags
|= BSF_GLOBAL
;
1826 s
->bsym
->flags
&= ~(BSF_LOCAL
|BSF_WEAK
);
1830 S_CLEAR_EXTERNAL (s
)
1833 if (LOCAL_SYMBOL_CHECK (s
))
1835 if ((s
->bsym
->flags
& BSF_WEAK
) != 0)
1837 /* Let .weak override. */
1840 s
->bsym
->flags
|= BSF_LOCAL
;
1841 s
->bsym
->flags
&= ~(BSF_GLOBAL
|BSF_WEAK
);
1848 if (LOCAL_SYMBOL_CHECK (s
))
1849 s
= local_symbol_convert ((struct local_symbol
*) s
);
1850 s
->bsym
->flags
|= BSF_WEAK
;
1851 s
->bsym
->flags
&= ~(BSF_GLOBAL
|BSF_LOCAL
);
1855 S_SET_NAME (s
, name
)
1859 if (LOCAL_SYMBOL_CHECK (s
))
1861 ((struct local_symbol
*) s
)->lsy_name
= name
;
1864 s
->bsym
->name
= name
;
1866 #endif /* BFD_ASSEMBLER */
1868 #ifdef SYMBOLS_NEED_BACKPOINTERS
1870 /* Return the previous symbol in a chain. */
1876 if (LOCAL_SYMBOL_CHECK (s
))
1878 return s
->sy_previous
;
1881 #endif /* SYMBOLS_NEED_BACKPOINTERS */
1883 /* Return the next symbol in a chain. */
1889 if (LOCAL_SYMBOL_CHECK (s
))
1894 /* Return a pointer to the value of a symbol as an expression. */
1897 symbol_get_value_expression (s
)
1900 if (LOCAL_SYMBOL_CHECK (s
))
1901 s
= local_symbol_convert ((struct local_symbol
*) s
);
1902 return &s
->sy_value
;
1905 /* Set the value of a symbol to an expression. */
1908 symbol_set_value_expression (s
, exp
)
1910 const expressionS
*exp
;
1912 if (LOCAL_SYMBOL_CHECK (s
))
1913 s
= local_symbol_convert ((struct local_symbol
*) s
);
1917 /* Set the frag of a symbol. */
1920 symbol_set_frag (s
, f
)
1924 #ifdef BFD_ASSEMBLER
1925 if (LOCAL_SYMBOL_CHECK (s
))
1927 local_symbol_set_frag ((struct local_symbol
*) s
, f
);
1934 /* Return the frag of a symbol. */
1940 #ifdef BFD_ASSEMBLER
1941 if (LOCAL_SYMBOL_CHECK (s
))
1942 return local_symbol_get_frag ((struct local_symbol
*) s
);
1947 /* Mark a symbol as having been used. */
1950 symbol_mark_used (s
)
1953 if (LOCAL_SYMBOL_CHECK (s
))
1958 /* Clear the mark of whether a symbol has been used. */
1961 symbol_clear_used (s
)
1964 if (LOCAL_SYMBOL_CHECK (s
))
1965 s
= local_symbol_convert ((struct local_symbol
*) s
);
1969 /* Return whether a symbol has been used. */
1975 if (LOCAL_SYMBOL_CHECK (s
))
1980 /* Mark a symbol as having been used in a reloc. */
1983 symbol_mark_used_in_reloc (s
)
1986 if (LOCAL_SYMBOL_CHECK (s
))
1987 s
= local_symbol_convert ((struct local_symbol
*) s
);
1988 s
->sy_used_in_reloc
= 1;
1991 /* Clear the mark of whether a symbol has been used in a reloc. */
1994 symbol_clear_used_in_reloc (s
)
1997 if (LOCAL_SYMBOL_CHECK (s
))
1999 s
->sy_used_in_reloc
= 0;
2002 /* Return whether a symbol has been used in a reloc. */
2005 symbol_used_in_reloc_p (s
)
2008 if (LOCAL_SYMBOL_CHECK (s
))
2010 return s
->sy_used_in_reloc
;
2013 /* Mark a symbol as an MRI common symbol. */
2016 symbol_mark_mri_common (s
)
2019 if (LOCAL_SYMBOL_CHECK (s
))
2020 s
= local_symbol_convert ((struct local_symbol
*) s
);
2021 s
->sy_mri_common
= 1;
2024 /* Clear the mark of whether a symbol is an MRI common symbol. */
2027 symbol_clear_mri_common (s
)
2030 if (LOCAL_SYMBOL_CHECK (s
))
2032 s
->sy_mri_common
= 0;
2035 /* Return whether a symbol is an MRI common symbol. */
2038 symbol_mri_common_p (s
)
2041 if (LOCAL_SYMBOL_CHECK (s
))
2043 return s
->sy_mri_common
;
2046 /* Mark a symbol as having been written. */
2049 symbol_mark_written (s
)
2052 if (LOCAL_SYMBOL_CHECK (s
))
2057 /* Clear the mark of whether a symbol has been written. */
2060 symbol_clear_written (s
)
2063 if (LOCAL_SYMBOL_CHECK (s
))
2068 /* Return whether a symbol has been written. */
2071 symbol_written_p (s
)
2074 if (LOCAL_SYMBOL_CHECK (s
))
2079 /* Mark a symbol has having been resolved. */
2082 symbol_mark_resolved (s
)
2085 #ifdef BFD_ASSEMBLER
2086 if (LOCAL_SYMBOL_CHECK (s
))
2088 local_symbol_mark_resolved ((struct local_symbol
*) s
);
2095 /* Return whether a symbol has been resolved. */
2098 symbol_resolved_p (s
)
2101 #ifdef BFD_ASSEMBLER
2102 if (LOCAL_SYMBOL_CHECK (s
))
2103 return local_symbol_resolved_p ((struct local_symbol
*) s
);
2105 return s
->sy_resolved
;
2108 /* Return whether a symbol is a section symbol. */
2111 symbol_section_p (s
)
2114 if (LOCAL_SYMBOL_CHECK (s
))
2116 #ifdef BFD_ASSEMBLER
2117 return (s
->bsym
->flags
& BSF_SECTION_SYM
) != 0;
2124 /* Return whether a symbol is equated to another symbol. */
2127 symbol_equated_p (s
)
2130 if (LOCAL_SYMBOL_CHECK (s
))
2132 return s
->sy_value
.X_op
== O_symbol
;
2135 /* Return whether a symbol has a constant value. */
2138 symbol_constant_p (s
)
2141 if (LOCAL_SYMBOL_CHECK (s
))
2143 return s
->sy_value
.X_op
== O_constant
;
2146 #ifdef BFD_ASSEMBLER
2148 /* Return the BFD symbol for a symbol. */
2151 symbol_get_bfdsym (s
)
2154 if (LOCAL_SYMBOL_CHECK (s
))
2155 s
= local_symbol_convert ((struct local_symbol
*) s
);
2159 /* Set the BFD symbol for a symbol. */
2162 symbol_set_bfdsym (s
, bsym
)
2166 if (LOCAL_SYMBOL_CHECK (s
))
2167 s
= local_symbol_convert ((struct local_symbol
*) s
);
2171 #endif /* BFD_ASSEMBLER */
2173 #ifdef OBJ_SYMFIELD_TYPE
2175 /* Get a pointer to the object format information for a symbol. */
2181 if (LOCAL_SYMBOL_CHECK (s
))
2182 s
= local_symbol_convert ((struct local_symbol
*) s
);
2186 /* Set the object format information for a symbol. */
2189 symbol_set_obj (s
, o
)
2191 OBJ_SYMFIELD_TYPE
*o
;
2193 if (LOCAL_SYMBOL_CHECK (s
))
2194 s
= local_symbol_convert ((struct local_symbol
*) s
);
2198 #endif /* OBJ_SYMFIELD_TYPE */
2200 #ifdef TC_SYMFIELD_TYPE
2202 /* Get a pointer to the processor information for a symbol. */
2208 if (LOCAL_SYMBOL_CHECK (s
))
2209 s
= local_symbol_convert ((struct local_symbol
*) s
);
2213 /* Set the processor information for a symbol. */
2216 symbol_set_tc (s
, o
)
2218 TC_SYMFIELD_TYPE
*o
;
2220 if (LOCAL_SYMBOL_CHECK (s
))
2221 s
= local_symbol_convert ((struct local_symbol
*) s
);
2225 #endif /* TC_SYMFIELD_TYPE */
2230 symbol_lastP
= NULL
;
2231 symbol_rootP
= NULL
; /* In case we have 0 symbols (!!) */
2232 sy_hash
= hash_new ();
2233 #ifdef BFD_ASSEMBLER
2234 local_hash
= hash_new ();
2237 memset ((char *) (&abs_symbol
), '\0', sizeof (abs_symbol
));
2238 #ifdef BFD_ASSEMBLER
2239 #if defined (EMIT_SECTION_SYMBOLS) || !defined (RELOC_REQUIRES_SYMBOL)
2240 abs_symbol
.bsym
= bfd_abs_section
.symbol
;
2243 /* Can't initialise a union. Sigh. */
2244 S_SET_SEGMENT (&abs_symbol
, absolute_section
);
2246 abs_symbol
.sy_value
.X_op
= O_constant
;
2247 abs_symbol
.sy_frag
= &zero_address_frag
;
2249 if (LOCAL_LABELS_FB
)
2257 /* Maximum indent level.
2258 Available for modification inside a gdb session. */
2259 int max_indent_level
= 8;
2266 printf ("%*s", indent_level
* 4, "");
2272 print_symbol_value_1 (file
, sym
)
2276 const char *name
= S_GET_NAME (sym
);
2277 if (!name
|| !name
[0])
2279 fprintf (file
, "sym %lx %s", (unsigned long) sym
, name
);
2281 if (LOCAL_SYMBOL_CHECK (sym
))
2283 #ifdef BFD_ASSEMBLER
2284 struct local_symbol
*locsym
= (struct local_symbol
*) sym
;
2285 if (local_symbol_get_frag (locsym
) != &zero_address_frag
2286 && local_symbol_get_frag (locsym
) != NULL
)
2287 fprintf (file
, " frag %lx", (long) local_symbol_get_frag (locsym
));
2288 if (local_symbol_resolved_p (locsym
))
2289 fprintf (file
, " resolved");
2290 fprintf (file
, " local");
2295 if (sym
->sy_frag
!= &zero_address_frag
)
2296 fprintf (file
, " frag %lx", (long) sym
->sy_frag
);
2298 fprintf (file
, " written");
2299 if (sym
->sy_resolved
)
2300 fprintf (file
, " resolved");
2301 else if (sym
->sy_resolving
)
2302 fprintf (file
, " resolving");
2303 if (sym
->sy_used_in_reloc
)
2304 fprintf (file
, " used-in-reloc");
2306 fprintf (file
, " used");
2307 if (S_IS_LOCAL (sym
))
2308 fprintf (file
, " local");
2309 if (S_IS_EXTERN (sym
))
2310 fprintf (file
, " extern");
2311 if (S_IS_DEBUG (sym
))
2312 fprintf (file
, " debug");
2313 if (S_IS_DEFINED (sym
))
2314 fprintf (file
, " defined");
2316 fprintf (file
, " %s", segment_name (S_GET_SEGMENT (sym
)));
2317 if (symbol_resolved_p (sym
))
2319 segT s
= S_GET_SEGMENT (sym
);
2321 if (s
!= undefined_section
2322 && s
!= expr_section
)
2323 fprintf (file
, " %lx", (long) S_GET_VALUE (sym
));
2325 else if (indent_level
< max_indent_level
2326 && S_GET_SEGMENT (sym
) != undefined_section
)
2329 fprintf (file
, "\n%*s<", indent_level
* 4, "");
2330 #ifdef BFD_ASSEMBLER
2331 if (LOCAL_SYMBOL_CHECK (sym
))
2332 fprintf (file
, "constant %lx",
2333 (long) ((struct local_symbol
*) sym
)->lsy_offset
);
2336 print_expr_1 (file
, &sym
->sy_value
);
2337 fprintf (file
, ">");
2344 print_symbol_value (sym
)
2348 print_symbol_value_1 (stderr
, sym
);
2349 fprintf (stderr
, "\n");
2353 print_binary (file
, name
, exp
)
2359 fprintf (file
, "%s\n%*s<", name
, indent_level
* 4, "");
2360 print_symbol_value_1 (file
, exp
->X_add_symbol
);
2361 fprintf (file
, ">\n%*s<", indent_level
* 4, "");
2362 print_symbol_value_1 (file
, exp
->X_op_symbol
);
2363 fprintf (file
, ">");
2368 print_expr_1 (file
, exp
)
2372 fprintf (file
, "expr %lx ", (long) exp
);
2376 fprintf (file
, "illegal");
2379 fprintf (file
, "absent");
2382 fprintf (file
, "constant %lx", (long) exp
->X_add_number
);
2386 fprintf (file
, "symbol\n%*s<", indent_level
* 4, "");
2387 print_symbol_value_1 (file
, exp
->X_add_symbol
);
2388 fprintf (file
, ">");
2390 if (exp
->X_add_number
)
2391 fprintf (file
, "\n%*s%lx", indent_level
* 4, "",
2392 (long) exp
->X_add_number
);
2396 fprintf (file
, "register #%d", (int) exp
->X_add_number
);
2399 fprintf (file
, "big");
2402 fprintf (file
, "uminus -<");
2404 print_symbol_value_1 (file
, exp
->X_add_symbol
);
2405 fprintf (file
, ">");
2406 goto maybe_print_addnum
;
2408 fprintf (file
, "bit_not");
2411 print_binary (file
, "multiply", exp
);
2414 print_binary (file
, "divide", exp
);
2417 print_binary (file
, "modulus", exp
);
2420 print_binary (file
, "lshift", exp
);
2423 print_binary (file
, "rshift", exp
);
2425 case O_bit_inclusive_or
:
2426 print_binary (file
, "bit_ior", exp
);
2428 case O_bit_exclusive_or
:
2429 print_binary (file
, "bit_xor", exp
);
2432 print_binary (file
, "bit_and", exp
);
2435 print_binary (file
, "eq", exp
);
2438 print_binary (file
, "ne", exp
);
2441 print_binary (file
, "lt", exp
);
2444 print_binary (file
, "le", exp
);
2447 print_binary (file
, "ge", exp
);
2450 print_binary (file
, "gt", exp
);
2453 print_binary (file
, "logical_and", exp
);
2456 print_binary (file
, "logical_or", exp
);
2460 fprintf (file
, "add\n%*s<", indent_level
* 4, "");
2461 print_symbol_value_1 (file
, exp
->X_add_symbol
);
2462 fprintf (file
, ">\n%*s<", indent_level
* 4, "");
2463 print_symbol_value_1 (file
, exp
->X_op_symbol
);
2464 fprintf (file
, ">");
2465 goto maybe_print_addnum
;
2468 fprintf (file
, "subtract\n%*s<", indent_level
* 4, "");
2469 print_symbol_value_1 (file
, exp
->X_add_symbol
);
2470 fprintf (file
, ">\n%*s<", indent_level
* 4, "");
2471 print_symbol_value_1 (file
, exp
->X_op_symbol
);
2472 fprintf (file
, ">");
2473 goto maybe_print_addnum
;
2475 fprintf (file
, "{unknown opcode %d}", (int) exp
->X_op
);
2485 print_expr_1 (stderr
, exp
);
2486 fprintf (stderr
, "\n");
2490 symbol_print_statistics (file
)
2493 hash_print_statistics (file
, "symbol table", sy_hash
);
2494 #ifdef BFD_ASSEMBLER
2495 hash_print_statistics (file
, "mini local symbol table", local_hash
);
2496 fprintf (file
, "%lu mini local symbols created, %lu converted\n",
2497 local_symbol_count
, local_symbol_conversion_count
);
2501 /* end of symbols.c */