[binutils.git] / gas / struc-symbol.h

/* 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 */
Commit	Line	Data
fecd2382 RP	1	/* struct_symbol.h - Internal symbol structure
fecd2382 RP	2	Copyright (C) 1987 Free Software Foundation, Inc.
a39116f1 RP	3
	4	This file is part of GAS, the GNU Assembler.
	5
	6	GAS is free software; you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as published by
	8	the Free Software Foundation; either version 2, or (at your option)
	9	any later version.
	10
	11	GAS is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
	15
	16	oYou should have received a copy of the GNU General Public License
	17	along with GAS; see the file COPYING. If not, write to
	18	the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
fecd2382 RP	19
	20	struct symbol /* our version of an nlist node */
	21	{
a39116f1 RP	22	obj_symbol_type sy_symbol; /* what we write in .o file (if permitted) */
	23	unsigned long sy_name_offset; /* 4-origin position of sy_name in symbols */
	24	/* part of object file. */
	25	/* 0 for (nameless) .stabd symbols. */
	26	/* Not used until write_object_file() time. */
	27	long sy_number; /* 24 bit symbol number. */
	28	/* Symbol numbers start at 0 and are */
	29	/* unsigned. */
	30	struct symbol sy_next; / forward chain, or NULL */
fecd2382	31	#ifdef SYMBOLS_NEED_BACKPOINTERS
a39116f1	32	struct symbol sy_previous; / backward chain, or NULL */
fecd2382	33	#endif /* SYMBOLS_NEED_BACKPOINTERS */
a39116f1 RP	34	struct frag sy_frag; / NULL or -> frag this symbol attaches to. */
	35	struct symbol sy_forward; / value is really that of this other symbol */
	36	/* We will probably want to add a sy_segment here soon. */
fecd2382 RP	37	};
	38
	39	typedef struct symbol symbolS;
	40
	41	typedef unsigned valueT; /* The type of n_value. Helps casting. */
	42
	43	#ifndef WORKING_DOT_WORD
	44	struct broken_word {
	45	struct broken_word next_broken_word;/ One of these strucs per .word x-y */
	46	fragS frag; / Which frag its in */
	47	char word_goes_here;/ Where in the frag it is */
	48	fragS dispfrag; / where to add the break */
	49	symbolS add; / symbol_x */
	50	symbolS sub; / - symbol_y */
	51	long addnum; /* + addnum */
	52	int added; /* nasty thing happend yet? */
a39116f1 RP	53	/* 1: added and has a long-jump */
a39116f1 RP	54	/* 2: added but uses someone elses long-jump */
fecd2382 RP	55	struct broken_word use_jump; / points to broken_word with a similar
	56	long-jump */
	57	};
	58	extern struct broken_word *broken_words;
	59	#endif /* ndef WORKING_DOT_WORD */
	60
	61	/*
	62	* Current means for getting from symbols to segments and vice verse.
	63	* This will change for infinite-segments support (e.g. COFF).
	64	*/
	65	/* #define SYMBOL_TYPE_TO_SEGMENT(symP) ( N_TYPE_seg [(int) (symP)->sy_type & N_TYPE] ) */
	66	extern segT N_TYPE_seg[]; /* subseg.c */
	67
	68	#define SEGMENT_TO_SYMBOL_TYPE(seg) ( seg_N_TYPE [(int) (seg)] )
	69	extern const short seg_N_TYPE[]; /* subseg.c */
	70
	71	#define N_REGISTER 30 /* Fake N_TYPE value for SEG_REGISTER */
	72
	73	#ifdef SYMBOLS_NEED_BACKPOINTERS
	74	#ifdef __STDC__
	75
	76	void symbol_clear_list_pointers(symbolS *symbolP);
	77	void symbol_insert(symbolS addme, symbolS target, symbolS rootP, symbolS lastP);
	78	void symbol_remove(symbolS symbolP, symbolS rootP, symbolS *lastP);
	79	void verify_symbol_chain(symbolS rootP, symbolS lastP);
	80
	81	#else /* __STDC__ */
	82
	83	void symbol_clear_list_pointers();
	84	void symbol_insert();
	85	void symbol_remove();
	86	void verify_symbol_chain();
	87
	88	#endif /* __STDC__ */
	89
	90	#define symbol_previous(s) ((s)->sy_previous)
	91
	92	#else /* SYMBOLS_NEED_BACKPOINTERS */
	93
	94	#define symbol_clear_list_pointers(clearme) {clearme->sy_next = NULL;}
	95
	96	#endif /* SYMBOLS_NEED_BACKPOINTERS */
	97
	98	#ifdef __STDC__
	99	void symbol_append(symbolS addme, symbolS target, symbolS rootP, symbolS lastP);
	100	#else /* __STDC__ */
	101	void symbol_append();
	102	#endif /* __STDC__ */
	103
	104	#define symbol_next(s) ((s)->sy_next)
	105
	106	/*
	107	* Local Variables:
	108	* comment-column: 0
	109	* fill-column: 131
	110	* End:
	111	*/
	112
	113	/* end of struc-symbol.h */