[deliverable/binutils-gdb.git] / gas / write.h

/* write.h

   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.
   
   You 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 TC_I960
#ifdef hpux
#define EXEC_MACHINE_TYPE HP9000S200_ID
#endif
#endif /* TC_I960 */

#ifndef LOCAL_LABEL
#ifdef DOT_LABEL_PREFIX
#define LOCAL_LABEL(name) (name[0] =='.' \
			   && ( name [1] == 'L' || name [1] == '.' ))
#else  /* not defined DOT_LABEL_PREFIX */
#define LOCAL_LABEL(name) (name [0] == 'L' )
#endif /* not defined DOT_LABEL_PREFIX */
#endif /* LOCAL_LABEL */

#define S_LOCAL_NAME(s) (LOCAL_LABEL(S_GET_NAME(s)))

/* The bit_fix was implemented to support machines that need variables
   to be inserted in bitfields other than 1, 2 and 4 bytes. 
   Furthermore it gives us a possibillity to mask in bits in the symbol
   when it's fixed in the objectcode and check the symbols limits.
   
   The or-mask is used to set the huffman bits in displacements for the
   ns32k port.
   The acbi, addqi, movqi, cmpqi instruction requires an assembler that
   can handle bitfields. Ie handle an expression, evaluate it and insert
   the result in an some bitfield. ( ex: 5 bits in a short field of a opcode) 
   */

struct bit_fix {
	int			fx_bit_size;	/* Length of bitfield		*/
	int			fx_bit_offset;	/* Bit offset to bitfield	*/
	long			fx_bit_base;	/* Where do we apply the bitfix.
						   If this is zero, default is assumed. */
	long                  fx_bit_base_adj;/* Adjustment of base */
	long			fx_bit_max;	/* Signextended max for bitfield */
	long			fx_bit_min;	/* Signextended min for bitfield */
	long			fx_bit_add;	/* Or mask, used for huffman prefix */
};
typedef struct bit_fix bit_fixS;
/*
 * FixSs may be built up in any order.
 */

struct fix {
	fragS *fx_frag;	/* Which frag? */
	long fx_where;	/* Where is the 1st byte to fix up? */
	symbolS *fx_addsy; /* NULL or Symbol whose value we add in. */
	symbolS *fx_subsy; /* NULL or Symbol whose value we subtract. */
	long fx_offset;	/* Absolute number we add in. */
	struct fix *fx_next;	/* NULL or -> next fixS. */
	short int fx_size;	/* How many bytes are involved? */
	char fx_pcrel;	/* TRUE: pc-relative. */
	char fx_pcrel_adjust;/* pc-relative offset adjust */
	char fx_im_disp;	/* TRUE: value is a displacement */
	bit_fixS *fx_bit_fixP;	/* IF NULL no bitfix's to do */  
	char fx_bsr;		/* sequent-hack */
	enum reloc_type fx_r_type;	/* Sparc hacks */
	char fx_callj;	/* TRUE if target is a 'callj'
			   (used by i960) */
	long fx_addnumber;
};

typedef struct fix fixS;

COMMON char *next_object_file_charP;

#ifndef MANY_SEGMENTS
COMMON fixS *text_fix_root, *text_fix_tail;	/* Chains fixSs. */
COMMON fixS *data_fix_root, *data_fix_tail;	/* Chains fixSs. */
#endif
COMMON fixS **seg_fix_rootP, **seg_fix_tailP;	/* -> one of above. */
extern long string_byte_count;
extern int section_alignment[];

#if __STDC__ == 1

bit_fixS *bit_fix_new(char size, char offset, long base_type, long base_adj, long min, long max, long add);
void append(char **charPP, char *fromP, unsigned long length);
void record_alignment(segT seg, int align);
void write_object_file(void);

fixS *fix_new(fragS *frag,
	      int where,
	      int size,
	      symbolS *add_symbol,
	      symbolS *sub_symbol,
	      long offset,
	      int pcrel,
	      enum reloc_type r_type);

#else /* not __STDC__ */

bit_fixS *bit_fix_new();
fixS *fix_new();
void append();
void record_alignment();
void write_object_file();

#endif /* not __STDC__ */

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

/* end of write.h */
Commit	Line	Data
3340f7e5	1	/* write.h
fecd2382	2
3340f7e5	3	Copyright (C) 1987, 1992 Free Software Foundation, Inc.
a39116f1 RP	4
	5	This file is part of GAS, the GNU Assembler.
	6
	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)
	10	any later version.
	11
	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.
	16
	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
	19	the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
fecd2382 RP	20
	21	#ifndef TC_I960
	22	#ifdef hpux
	23	#define EXEC_MACHINE_TYPE HP9000S200_ID
	24	#endif
	25	#endif /* TC_I960 */
	26
	27	#ifndef LOCAL_LABEL
	28	#ifdef DOT_LABEL_PREFIX
	29	#define LOCAL_LABEL(name) (name[0] =='.' \
a39116f1	30	&& ( name [1] == 'L' \|\| name [1] == '.' ))
fecd2382 RP	31	#else /* not defined DOT_LABEL_PREFIX */
	32	#define LOCAL_LABEL(name) (name [0] == 'L' )
	33	#endif /* not defined DOT_LABEL_PREFIX */
	34	#endif /* LOCAL_LABEL */
	35
	36	#define S_LOCAL_NAME(s) (LOCAL_LABEL(S_GET_NAME(s)))
	37
	38	/* The bit_fix was implemented to support machines that need variables
	39	to be inserted in bitfields other than 1, 2 and 4 bytes.
	40	Furthermore it gives us a possibillity to mask in bits in the symbol
	41	when it's fixed in the objectcode and check the symbols limits.
a39116f1	42
fecd2382 RP	43	The or-mask is used to set the huffman bits in displacements for the
	44	ns32k port.
	45	The acbi, addqi, movqi, cmpqi instruction requires an assembler that
	46	can handle bitfields. Ie handle an expression, evaluate it and insert
	47	the result in an some bitfield. ( ex: 5 bits in a short field of a opcode)
a39116f1	48	*/
fecd2382 RP	49
fecd2382 RP	50	struct bit_fix {
a39116f1 RP	51	int fx_bit_size; /* Length of bitfield */
	52	int fx_bit_offset; /* Bit offset to bitfield */
	53	long fx_bit_base; /* Where do we apply the bitfix.
	54	If this is zero, default is assumed. */
	55	long fx_bit_base_adj;/* Adjustment of base */
	56	long fx_bit_max; /* Signextended max for bitfield */
	57	long fx_bit_min; /* Signextended min for bitfield */
	58	long fx_bit_add; /* Or mask, used for huffman prefix */
fecd2382 RP	59	};
	60	typedef struct bit_fix bit_fixS;
	61	/*
	62	* FixSs may be built up in any order.
	63	*/
	64
a39116f1 RP	65	struct fix {
	66	fragS fx_frag; / Which frag? */
	67	long fx_where; /* Where is the 1st byte to fix up? */
	68	symbolS fx_addsy; / NULL or Symbol whose value we add in. */
	69	symbolS fx_subsy; / NULL or Symbol whose value we subtract. */
	70	long fx_offset; /* Absolute number we add in. */
	71	struct fix fx_next; / NULL or -> next fixS. */
	72	short int fx_size; /* How many bytes are involved? */
	73	char fx_pcrel; /* TRUE: pc-relative. */
	74	char fx_pcrel_adjust;/* pc-relative offset adjust */
	75	char fx_im_disp; /* TRUE: value is a displacement */
	76	bit_fixS fx_bit_fixP; / IF NULL no bitfix's to do */
	77	char fx_bsr; /* sequent-hack */
	78	enum reloc_type fx_r_type; /* Sparc hacks */
	79	char fx_callj; /* TRUE if target is a 'callj'
	80	(used by i960) */
	81	long fx_addnumber;
fecd2382 RP	82	};
fecd2382 RP	83
a39116f1	84	typedef struct fix fixS;
fecd2382 RP	85
	86	COMMON char *next_object_file_charP;
	87
a39116f1	88	#ifndef MANY_SEGMENTS
fecd2382 RP	89	COMMON fixS text_fix_root, text_fix_tail; /* Chains fixSs. */
fecd2382 RP	90	COMMON fixS data_fix_root, data_fix_tail; /* Chains fixSs. */
a39116f1	91	#endif
fecd2382 RP	92	COMMON fixS seg_fix_rootP, seg_fix_tailP; /* -> one of above. */
	93	extern long string_byte_count;
	94	extern int section_alignment[];
	95
3340f7e5	96	#if __STDC__ == 1
fecd2382 RP	97
	98	bit_fixS *bit_fix_new(char size, char offset, long base_type, long base_adj, long min, long max, long add);
	99	void append(char *charPP, char fromP, unsigned long length);
	100	void record_alignment(segT seg, int align);
	101	void write_object_file(void);
	102
	103	fixS fix_new(fragS frag,
	104	int where,
	105	int size,
	106	symbolS *add_symbol,
	107	symbolS *sub_symbol,
	108	long offset,
	109	int pcrel,
	110	enum reloc_type r_type);
	111
3340f7e5	112	#else /* not __STDC__ */
fecd2382 RP	113
	114	bit_fixS *bit_fix_new();
	115	fixS *fix_new();
	116	void append();
	117	void record_alignment();
	118	void write_object_file();
	119
3340f7e5	120	#endif /* not __STDC__ */
fecd2382 RP	121
	122	/*
	123	* Local Variables:
	124	* comment-column: 0
	125	* fill-column: 131
	126	* End:
	127	*/
	128
	129	/* end of write.h */