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/* struct_symbol.h - Internal symbol structure
Copyright (C) 1987 Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
GAS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GAS is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
oYou should have received a copy of the GNU General Public License
along with GAS; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
struct symbol /* our version of an nlist node */
{
obj_symbol_type sy_symbol; /* what we write in .o file (if permitted) */
unsigned long sy_name_offset; /* 4-origin position of sy_name in symbols */
/* part of object file. */
/* 0 for (nameless) .stabd symbols. */
/* Not used until write_object_file() time. */
long sy_number; /* 24 bit symbol number. */
/* Symbol numbers start at 0 and are */
/* unsigned. */
struct symbol *sy_next; /* forward chain, or NULL */
#ifdef SYMBOLS_NEED_BACKPOINTERS
struct symbol *sy_previous; /* backward chain, or NULL */
#endif /* SYMBOLS_NEED_BACKPOINTERS */
struct frag *sy_frag; /* NULL or -> frag this symbol attaches to. */
struct symbol *sy_forward; /* value is really that of this other symbol */
/* We will probably want to add a sy_segment here soon. */
};
typedef struct symbol symbolS;
typedef unsigned valueT; /* The type of n_value. Helps casting. */
#ifndef WORKING_DOT_WORD
struct broken_word {
struct broken_word *next_broken_word;/* One of these strucs per .word x-y */
fragS *frag; /* Which frag its in */
char *word_goes_here;/* Where in the frag it is */
fragS *dispfrag; /* where to add the break */
symbolS *add; /* symbol_x */
symbolS *sub; /* - symbol_y */
long addnum; /* + addnum */
int added; /* nasty thing happend yet? */
/* 1: added and has a long-jump */
/* 2: added but uses someone elses long-jump */
struct broken_word *use_jump; /* points to broken_word with a similar
long-jump */
};
extern struct broken_word *broken_words;
#endif /* ndef WORKING_DOT_WORD */
/*
* Current means for getting from symbols to segments and vice verse.
* This will change for infinite-segments support (e.g. COFF).
*/
/* #define SYMBOL_TYPE_TO_SEGMENT(symP) ( N_TYPE_seg [(int) (symP)->sy_type & N_TYPE] ) */
extern segT N_TYPE_seg[]; /* subseg.c */
#define SEGMENT_TO_SYMBOL_TYPE(seg) ( seg_N_TYPE [(int) (seg)] )
extern const short seg_N_TYPE[]; /* subseg.c */
#define N_REGISTER 30 /* Fake N_TYPE value for SEG_REGISTER */
#ifdef SYMBOLS_NEED_BACKPOINTERS
#ifdef __STDC__
void symbol_clear_list_pointers(symbolS *symbolP);
void symbol_insert(symbolS *addme, symbolS *target, symbolS **rootP, symbolS **lastP);
void symbol_remove(symbolS *symbolP, symbolS **rootP, symbolS **lastP);
void verify_symbol_chain(symbolS *rootP, symbolS *lastP);
#else /* __STDC__ */
void symbol_clear_list_pointers();
void symbol_insert();
void symbol_remove();
void verify_symbol_chain();
#endif /* __STDC__ */
#define symbol_previous(s) ((s)->sy_previous)
#else /* SYMBOLS_NEED_BACKPOINTERS */
#define symbol_clear_list_pointers(clearme) {clearme->sy_next = NULL;}
#endif /* SYMBOLS_NEED_BACKPOINTERS */
#ifdef __STDC__
void symbol_append(symbolS *addme, symbolS *target, symbolS **rootP, symbolS **lastP);
#else /* __STDC__ */
void symbol_append();
#endif /* __STDC__ */
#define symbol_next(s) ((s)->sy_next)
/*
* Local Variables:
* comment-column: 0
* fill-column: 131
* End:
*/
/* end of struc-symbol.h */
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