[deliverable/binutils-gdb.git] / gas / config / vax-inst.h

/* vax-inst.h - GNU - Part of vax.c
   Copyright 1987, 1992, 1995, 2000, 2002, 2005, 2007
   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 3, 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, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */

/*
 * This is part of vax-ins-parse.c & friends.
 * We want to parse a vax instruction text into a tree defined here.
 */

#define VIT_MAX_OPERANDS (6)	/* maximum number of operands in one       */
/* single vax instruction */

struct vop			/* vax instruction operand                 */
{
  short int vop_ndx;		/* -1, or index register. eg 7=[R7]	   */
  short int vop_reg;		/* -1, or register number. eg @I^#=0xF     */
  /* Helps distinguish "abs" from "abs(PC)".  */
  short int vop_mode;		/* addressing mode 4 bits. eg I^#=0x9	   */
  char vop_short;		/* operand displacement length as written  */
  /* ' '=none, "bilsw"=B^I^L^S^W^.           */
  char vop_access;		/* 'b'branch ' 'no-instruction 'amrvw'norm */
  char vop_width;		/* Operand width, one of "bdfghloqw"	   */
  const char *vop_warn;		/* warning message of this operand, if any */
  const char *vop_error;	/* say if operand is inappropriate         */
  char *vop_expr_begin;		/* Unparsed expression, 1st char ...	   */
  char *vop_expr_end;		/* ... last char.			   */
  unsigned char vop_nbytes;	/* number of bytes in datum		   */
};

typedef long vax_opcodeT;	/* For initialising array of opcodes	   */
/* Some synthetic opcodes > 16 bits!       */

#define VIT_OPCODE_SYNTHETIC 0x80000000	/* Not real hardware instruction.  */
#define VIT_OPCODE_SPECIAL   0x40000000	/* Not normal branch optimising.   */
/* Never set without ..._SYNTHETIC */

#define VAX_WIDTH_UNCONDITIONAL_JUMP '-'	/* These are encoded into         */
#define VAX_WIDTH_CONDITIONAL_JUMP   '?'	/* vop_width when vop_access=='b' */
#define VAX_WIDTH_WORD_JUMP          '!'	/* and VIT_OPCODE_SYNTHETIC set.  */
#define VAX_WIDTH_BYTE_JUMP	     ':'	/*                                */

#define VAX_JSB (0x16)		/* Jump to subroutine			   */
#define VAX_JMP (0x17)		/* Useful for branch optimising. Jump instr*/
#define VAX_PC_RELATIVE_MODE (0xef)	/* Use it after VAX_JMP		   */
#define VAX_ABSOLUTE_MODE (0x9F)/* Use as @#...			   */
#define VAX_BRB (0x11)		/* Canonical branch.			   */
#define VAX_BRW (0x31)		/* Another canonical branch		   */
#define VAX_CALLS (0xFB)	/* Call with arg list on stack	           */
#define VAX_CALLG (0xFA)	/* Call with arg list in memory		   */
#define VAX_WIDEN_WORD (0x20)	/* Add this to byte branch to get word br.  */
#define VAX_WIDEN_LONG (0x6)	/* Add this to byte branch to get long jmp.*/
/* Needs VAX_PC_RELATIVE_MODE byte after it*/

struct vit			/* vax instruction tree                    */
{
  /* vit_opcode is char[] for portability.   */
  char vit_opcode[sizeof (vax_opcodeT)];
  unsigned char vit_opcode_nbytes;	/* How long is _opcode? (chars)	   */
  unsigned char vit_operands;	/*					   */
  struct vop vit_operand[VIT_MAX_OPERANDS];	/* operands             */
  const char *vit_error;	/* "" or error text */
};

/* end of vax-inst.h */
Commit	Line	Data
252b5132	1	/* vax-inst.h - GNU - Part of vax.c
aa820537 AM	2	Copyright 1987, 1992, 1995, 2000, 2002, 2005, 2007
aa820537 AM	3	Free Software Foundation, Inc.
252b5132 RH	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
ec2655a6	9	the Free Software Foundation; either version 3, or (at your option)
252b5132 RH	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
4b4da160	19	the Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
252b5132 RH	20
	21	/*
	22	* This is part of vax-ins-parse.c & friends.
	23	* We want to parse a vax instruction text into a tree defined here.
	24	*/
	25
	26	#define VIT_MAX_OPERANDS (6) /* maximum number of operands in one */
	27	/* single vax instruction */
	28
	29	struct vop /* vax instruction operand */
	30	{
	31	short int vop_ndx; /* -1, or index register. eg 7=[R7] */
	32	short int vop_reg; /* -1, or register number. eg @I^#=0xF */
4a1805b1	33	/* Helps distinguish "abs" from "abs(PC)". */
252b5132 RH	34	short int vop_mode; /* addressing mode 4 bits. eg I^#=0x9 */
	35	char vop_short; /* operand displacement length as written */
	36	/* ' '=none, "bilsw"=B^I^L^S^W^. */
	37	char vop_access; /* 'b'branch ' 'no-instruction 'amrvw'norm */
	38	char vop_width; /* Operand width, one of "bdfghloqw" */
	39	const char vop_warn; / warning message of this operand, if any */
	40	const char vop_error; / say if operand is inappropriate */
	41	char vop_expr_begin; / Unparsed expression, 1st char ... */
	42	char vop_expr_end; / ... last char. */
	43	unsigned char vop_nbytes; /* number of bytes in datum */
	44	};
	45
252b5132 RH	46	typedef long vax_opcodeT; /* For initialising array of opcodes */
	47	/* Some synthetic opcodes > 16 bits! */
	48
	49	#define VIT_OPCODE_SYNTHETIC 0x80000000 /* Not real hardware instruction. */
	50	#define VIT_OPCODE_SPECIAL 0x40000000 /* Not normal branch optimising. */
	51	/* Never set without ..._SYNTHETIC */
	52
	53	#define VAX_WIDTH_UNCONDITIONAL_JUMP '-' /* These are encoded into */
	54	#define VAX_WIDTH_CONDITIONAL_JUMP '?' /* vop_width when vop_access=='b' */
	55	#define VAX_WIDTH_WORD_JUMP '!' /* and VIT_OPCODE_SYNTHETIC set. */
	56	#define VAX_WIDTH_BYTE_JUMP ':' /* */
	57
7542c0f2	58	#define VAX_JSB (0x16) /* Jump to subroutine */
252b5132 RH	59	#define VAX_JMP (0x17) /* Useful for branch optimising. Jump instr*/
	60	#define VAX_PC_RELATIVE_MODE (0xef) /* Use it after VAX_JMP */
	61	#define VAX_ABSOLUTE_MODE (0x9F)/* Use as @#... */
	62	#define VAX_BRB (0x11) /* Canonical branch. */
	63	#define VAX_BRW (0x31) /* Another canonical branch */
7542c0f2 JT	64	#define VAX_CALLS (0xFB) /* Call with arg list on stack */
7542c0f2 JT	65	#define VAX_CALLG (0xFA) /* Call with arg list in memory */
4a1805b1	66	#define VAX_WIDEN_WORD (0x20) /* Add this to byte branch to get word br. */
252b5132 RH	67	#define VAX_WIDEN_LONG (0x6) /* Add this to byte branch to get long jmp.*/
	68	/* Needs VAX_PC_RELATIVE_MODE byte after it*/
	69
	70	struct vit /* vax instruction tree */
	71	{
	72	/* vit_opcode is char[] for portability. */
	73	char vit_opcode[sizeof (vax_opcodeT)];
	74	unsigned char vit_opcode_nbytes; /* How long is _opcode? (chars) */
	75	unsigned char vit_operands; /* */
	76	struct vop vit_operand[VIT_MAX_OPERANDS]; /* operands */
	77	const char vit_error; / "" or error text */
	78	};
	79
	80	/* end of vax-inst.h */