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

/* struct_symbol.h - Internal symbol structure
   Copyright (C) 1987, 1992 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.  */

#ifndef __struc_symbol_h__
#define __struc_symbol_h__

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
#if __STDC__ == 1

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 /* not __STDC__ */

void symbol_clear_list_pointers ();
void symbol_insert ();
void symbol_remove ();
void verify_symbol_chain ();

#endif /* not __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 */

#if __STDC__ == 1
void symbol_append (symbolS * addme, symbolS * target, symbolS ** rootP, symbolS ** lastP);
#else /* not __STDC__ */
void symbol_append ();
#endif /* not __STDC__ */

#define symbol_next(s)	((s)->sy_next)

#endif /* __struc_symbol_h__ */

/*
 * Local Variables:
 * comment-column: 0
 * fill-column: 131
 * End:
 */

/* end of struc-symbol.h */
Commit	Line	Data
fecd2382	1	/* struct_symbol.h - Internal symbol structure
3340f7e5	2	Copyright (C) 1987, 1992 Free Software Foundation, Inc.
6efd877d	3
a39116f1	4	This file is part of GAS, the GNU Assembler.
6efd877d	5
a39116f1 RP	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.
6efd877d	10
a39116f1 RP	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.
6efd877d	15
a39116f1 RP	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	19
6efd877d KR	20	#ifndef __struc_symbol_h__
	21	#define __struc_symbol_h__
	22
fecd2382 RP	23	struct symbol /* our version of an nlist node */
fecd2382 RP	24	{
6efd877d KR	25	obj_symbol_type sy_symbol; /* what we write in .o file (if permitted) */
	26	unsigned long sy_name_offset; /* 4-origin position of sy_name in symbols */
	27	/* part of object file. */
	28	/* 0 for (nameless) .stabd symbols. */
	29	/* Not used until write_object_file() time. */
	30	long sy_number; /* 24 bit symbol number. */
	31	/* Symbol numbers start at 0 and are */
	32	/* unsigned. */
	33	struct symbol sy_next; / forward chain, or NULL */
fecd2382	34	#ifdef SYMBOLS_NEED_BACKPOINTERS
6efd877d	35	struct symbol sy_previous; / backward chain, or NULL */
fecd2382	36	#endif /* SYMBOLS_NEED_BACKPOINTERS */
6efd877d KR	37	struct frag sy_frag; / NULL or -> frag this symbol attaches to. */
	38	struct symbol sy_forward; / value is really that of this other symbol */
	39	/* We will probably want to add a sy_segment here soon. */
fecd2382 RP	40	};
	41
	42	typedef struct symbol symbolS;
	43
	44	typedef unsigned valueT; /* The type of n_value. Helps casting. */
	45
	46	#ifndef WORKING_DOT_WORD
6efd877d KR	47	struct broken_word
	48	{
	49	struct broken_word next_broken_word; / One of these strucs per .word x-y */
	50	fragS frag; / Which frag its in */
	51	char word_goes_here; / Where in the frag it is */
	52	fragS dispfrag; / where to add the break */
	53	symbolS add; / symbol_x */
	54	symbolS sub; / - symbol_y */
	55	long addnum; /* + addnum */
	56	int added; /* nasty thing happend yet? */
	57	/* 1: added and has a long-jump */
	58	/* 2: added but uses someone elses long-jump */
	59	struct broken_word use_jump; / points to broken_word with a similar
fecd2382	60	long-jump */
6efd877d	61	};
fecd2382 RP	62	extern struct broken_word *broken_words;
	63	#endif /* ndef WORKING_DOT_WORD */
	64
	65	/*
	66	* Current means for getting from symbols to segments and vice verse.
	67	* This will change for infinite-segments support (e.g. COFF).
	68	*/
	69	/* #define SYMBOL_TYPE_TO_SEGMENT(symP) ( N_TYPE_seg [(int) (symP)->sy_type & N_TYPE] ) */
6efd877d	70	extern segT N_TYPE_seg[]; /* subseg.c */
fecd2382 RP	71
fecd2382 RP	72	#define SEGMENT_TO_SYMBOL_TYPE(seg) ( seg_N_TYPE [(int) (seg)] )
6efd877d	73	extern const short seg_N_TYPE[];/* subseg.c */
fecd2382 RP	74
	75	#define N_REGISTER 30 /* Fake N_TYPE value for SEG_REGISTER */
	76
	77	#ifdef SYMBOLS_NEED_BACKPOINTERS
3340f7e5	78	#if __STDC__ == 1
fecd2382	79
6efd877d KR	80	void symbol_clear_list_pointers (symbolS * symbolP);
	81	void symbol_insert (symbolS * addme, symbolS * target, symbolS rootP, symbolS lastP);
	82	void symbol_remove (symbolS * symbolP, symbolS rootP, symbolS lastP);
	83	void verify_symbol_chain (symbolS * rootP, symbolS * lastP);
fecd2382	84
3340f7e5	85	#else /* not __STDC__ */
fecd2382	86
6efd877d KR	87	void symbol_clear_list_pointers ();
	88	void symbol_insert ();
	89	void symbol_remove ();
	90	void verify_symbol_chain ();
fecd2382	91
3340f7e5	92	#endif /* not __STDC__ */
fecd2382 RP	93
	94	#define symbol_previous(s) ((s)->sy_previous)
	95
	96	#else /* SYMBOLS_NEED_BACKPOINTERS */
	97
	98	#define symbol_clear_list_pointers(clearme) {clearme->sy_next = NULL;}
	99
	100	#endif /* SYMBOLS_NEED_BACKPOINTERS */
	101
3340f7e5	102	#if __STDC__ == 1
6efd877d	103	void symbol_append (symbolS * addme, symbolS * target, symbolS rootP, symbolS lastP);
3340f7e5	104	#else /* not __STDC__ */
6efd877d	105	void symbol_append ();
3340f7e5	106	#endif /* not __STDC__ */
fecd2382 RP	107
	108	#define symbol_next(s) ((s)->sy_next)
	109
6efd877d KR	110	#endif /* __struc_symbol_h__ */
6efd877d KR	111
fecd2382 RP	112	/*
	113	* Local Variables:
	114	* comment-column: 0
	115	* fill-column: 131
	116	* End:
	117	*/
	118
	119	/* end of struc-symbol.h */