e0890092b6
and rearrange for efficiency. For "PIC code" subtraction, use "rightseg" rather than recalculating. For "symbol OP symbol" subtract, set "retval" to absolute_section if symbols in same section. * symbols.c (resolve_symbol_value): Resolve "sym +/- expr" to an O_symbol. Simplify a +/- b code. Allow equality and non-equality comparisons on symbols from any section. Allow other comparison operators as for subtraction. (symbol_equated_reloc_p): New predicate function. * symbols.h (symbol_equated_reloc_p): Declare. * write.c (adjust_reloc_syms): Use symbol_equated_reloc_p. (write_relocs): Likewise. (write_object_file): Likewise. (relax_segment <rs_machine_dependent>): Ensure segment for expression syms is set correctly. * config/tc-mips.c (md_estimate_size_before_relax): Likewise. * config/tc-i386.c (md_assemble <Output jumps>): Don't lose part of a complex expression when setting up frag_var.
204 lines
7.4 KiB
C
204 lines
7.4 KiB
C
/* symbols.h -
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Copyright 1987, 1990, 1992, 1993, 1994, 1995, 1997, 1999, 2000, 2001
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Free Software Foundation, Inc.
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This file is part of GAS, the GNU Assembler.
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GAS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GAS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GAS; see the file COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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#ifdef BFD_ASSEMBLER
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/* The BFD code wants to walk the list in both directions. */
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#undef SYMBOLS_NEED_BACKPOINTERS
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#define SYMBOLS_NEED_BACKPOINTERS
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#endif
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#ifndef BFD_ASSEMBLER
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/* The non-BFD code expects to be able to manipulate the symbol fields
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directly. */
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#include "struc-symbol.h"
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#endif
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extern struct obstack notes; /* eg FixS live here. */
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extern struct obstack cond_obstack; /* this is where we track .ifdef/.endif
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(if we do that at all). */
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extern symbolS *symbol_rootP; /* all the symbol nodes */
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extern symbolS *symbol_lastP; /* last struct symbol we made, or NULL */
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extern symbolS abs_symbol;
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extern int symbol_table_frozen;
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/* This is non-zero if symbols are case sensitive, which is the
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default. */
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extern int symbols_case_sensitive;
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char *decode_local_label_name PARAMS ((char *s));
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symbolS *symbol_find PARAMS ((CONST char *name));
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symbolS *symbol_find_base PARAMS ((CONST char *name, int strip_underscore));
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symbolS *symbol_find_or_make PARAMS ((const char *name));
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symbolS *symbol_make PARAMS ((CONST char *name));
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symbolS *symbol_new PARAMS ((CONST char *name, segT segment, valueT value,
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fragS * frag));
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symbolS *symbol_create PARAMS ((CONST char *name, segT segment, valueT value,
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fragS * frag));
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symbolS *colon PARAMS ((const char *sym_name));
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void local_colon PARAMS ((int n));
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void symbol_begin PARAMS ((void));
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void symbol_print_statistics PARAMS ((FILE *));
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void symbol_table_insert PARAMS ((symbolS * symbolP));
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valueT resolve_symbol_value PARAMS ((symbolS *));
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void resolve_local_symbol_values PARAMS ((void));
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void print_symbol_value PARAMS ((symbolS *));
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void print_expr PARAMS ((expressionS *));
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void print_expr_1 PARAMS ((FILE *, expressionS *));
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void print_symbol_value_1 PARAMS ((FILE *, symbolS *));
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int dollar_label_defined PARAMS ((long l));
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void dollar_label_clear PARAMS ((void));
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void define_dollar_label PARAMS ((long l));
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char *dollar_label_name PARAMS ((long l, int augend));
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void fb_label_instance_inc PARAMS ((long label));
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char *fb_label_name PARAMS ((long n, long augend));
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extern void copy_symbol_attributes PARAMS ((symbolS *, symbolS *));
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/* Get and set the values of symbols. These used to be macros. */
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extern valueT S_GET_VALUE PARAMS ((symbolS *));
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extern void S_SET_VALUE PARAMS ((symbolS *, valueT));
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#ifdef BFD_ASSEMBLER
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extern int S_IS_FUNCTION PARAMS ((symbolS *));
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extern int S_IS_EXTERNAL PARAMS ((symbolS *));
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extern int S_IS_WEAK PARAMS ((symbolS *));
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extern int S_IS_COMMON PARAMS ((symbolS *));
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extern int S_IS_DEFINED PARAMS ((symbolS *));
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extern int S_IS_DEBUG PARAMS ((symbolS *));
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extern int S_IS_LOCAL PARAMS ((symbolS *));
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extern int S_IS_EXTERN PARAMS ((symbolS *));
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extern int S_IS_STABD PARAMS ((symbolS *));
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extern CONST char *S_GET_NAME PARAMS ((symbolS *));
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extern segT S_GET_SEGMENT PARAMS ((symbolS *));
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extern void S_SET_SEGMENT PARAMS ((symbolS *, segT));
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extern void S_SET_EXTERNAL PARAMS ((symbolS *));
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extern void S_SET_NAME PARAMS ((symbolS *, char *));
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extern void S_CLEAR_EXTERNAL PARAMS ((symbolS *));
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extern void S_SET_WEAK PARAMS ((symbolS *));
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#endif
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#ifndef WORKING_DOT_WORD
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struct broken_word
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{
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/* Linked list -- one of these structures per ".word x-y+C"
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expression. */
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struct broken_word *next_broken_word;
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/* Segment and subsegment for broken word. */
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segT seg;
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subsegT subseg;
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/* Which frag is this broken word in? */
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fragS *frag;
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/* Where in the frag is it? */
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char *word_goes_here;
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/* Where to add the break. */
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fragS *dispfrag; /* where to add the break */
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/* Operands of expression. */
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symbolS *add;
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symbolS *sub;
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offsetT addnum;
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int added; /* nasty thing happend yet? */
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/* 1: added and has a long-jump */
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/* 2: added but uses someone elses long-jump */
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/* Pointer to broken_word with a similar long-jump. */
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struct broken_word *use_jump;
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};
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extern struct broken_word *broken_words;
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#endif /* ndef WORKING_DOT_WORD */
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/*
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* Current means for getting from symbols to segments and vice verse.
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* This will change for infinite-segments support (e.g. COFF).
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*/
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extern const segT N_TYPE_seg[]; /* subseg.c */
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#define SEGMENT_TO_SYMBOL_TYPE(seg) ( seg_N_TYPE [(int) (seg)] )
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extern const short seg_N_TYPE[];/* subseg.c */
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#define N_REGISTER 30 /* Fake N_TYPE value for SEG_REGISTER */
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void symbol_clear_list_pointers PARAMS ((symbolS * symbolP));
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#ifdef SYMBOLS_NEED_BACKPOINTERS
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void symbol_insert PARAMS ((symbolS * addme, symbolS * target,
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symbolS ** rootP, symbolS ** lastP));
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void symbol_remove PARAMS ((symbolS * symbolP, symbolS ** rootP,
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symbolS ** lastP));
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extern symbolS *symbol_previous PARAMS ((symbolS *));
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#endif /* SYMBOLS_NEED_BACKPOINTERS */
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void verify_symbol_chain PARAMS ((symbolS * rootP, symbolS * lastP));
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void verify_symbol_chain_2 PARAMS ((symbolS * symP));
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void symbol_append PARAMS ((symbolS * addme, symbolS * target,
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symbolS ** rootP, symbolS ** lastP));
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extern symbolS *symbol_next PARAMS ((symbolS *));
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extern expressionS *symbol_get_value_expression PARAMS ((symbolS *));
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extern void symbol_set_value_expression PARAMS ((symbolS *,
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const expressionS *));
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extern void symbol_set_frag PARAMS ((symbolS *, fragS *));
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extern fragS *symbol_get_frag PARAMS ((symbolS *));
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extern void symbol_mark_used PARAMS ((symbolS *));
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extern void symbol_clear_used PARAMS ((symbolS *));
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extern int symbol_used_p PARAMS ((symbolS *));
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extern void symbol_mark_used_in_reloc PARAMS ((symbolS *));
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extern void symbol_clear_used_in_reloc PARAMS ((symbolS *));
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extern int symbol_used_in_reloc_p PARAMS ((symbolS *));
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extern void symbol_mark_mri_common PARAMS ((symbolS *));
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extern void symbol_clear_mri_common PARAMS ((symbolS *));
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extern int symbol_mri_common_p PARAMS ((symbolS *));
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extern void symbol_mark_written PARAMS ((symbolS *));
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extern void symbol_clear_written PARAMS ((symbolS *));
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extern int symbol_written_p PARAMS ((symbolS *));
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extern void symbol_mark_resolved PARAMS ((symbolS *));
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extern int symbol_resolved_p PARAMS ((symbolS *));
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extern int symbol_section_p PARAMS ((symbolS *));
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extern int symbol_equated_p PARAMS ((symbolS *));
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extern int symbol_equated_reloc_p PARAMS ((symbolS *));
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extern int symbol_constant_p PARAMS ((symbolS *));
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#ifdef BFD_ASSEMBLER
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extern asymbol *symbol_get_bfdsym PARAMS ((symbolS *));
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extern void symbol_set_bfdsym PARAMS ((symbolS *, asymbol *));
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#endif
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#ifdef OBJ_SYMFIELD_TYPE
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OBJ_SYMFIELD_TYPE *symbol_get_obj PARAMS ((symbolS *));
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void symbol_set_obj PARAMS ((symbolS *, OBJ_SYMFIELD_TYPE *));
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#endif
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#ifdef TC_SYMFIELD_TYPE
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TC_SYMFIELD_TYPE *symbol_get_tc PARAMS ((symbolS *));
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void symbol_set_tc PARAMS ((symbolS *, TC_SYMFIELD_TYPE *));
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#endif
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