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

/* vax-inst.h - GNU - Part of vax.c
   Copyright (C) 1987-2021 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
250d07de	2	Copyright (C) 1987-2021 Free Software Foundation, Inc.
252b5132 RH	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
ec2655a6	8	the Free Software Foundation; either version 3, or (at your option)
252b5132 RH	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	You should have received a copy of the GNU General Public License
	17	along with GAS; see the file COPYING. If not, write to
4b4da160	18	the Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
252b5132 RH	19
	20	/*
	21	* This is part of vax-ins-parse.c & friends.
	22	* We want to parse a vax instruction text into a tree defined here.
	23	*/
	24
	25	#define VIT_MAX_OPERANDS (6) /* maximum number of operands in one */
	26	/* single vax instruction */
	27
	28	struct vop /* vax instruction operand */
	29	{
	30	short int vop_ndx; /* -1, or index register. eg 7=[R7] */
	31	short int vop_reg; /* -1, or register number. eg @I^#=0xF */
4a1805b1	32	/* Helps distinguish "abs" from "abs(PC)". */
252b5132 RH	33	short int vop_mode; /* addressing mode 4 bits. eg I^#=0x9 */
	34	char vop_short; /* operand displacement length as written */
	35	/* ' '=none, "bilsw"=B^I^L^S^W^. */
	36	char vop_access; /* 'b'branch ' 'no-instruction 'amrvw'norm */
	37	char vop_width; /* Operand width, one of "bdfghloqw" */
	38	const char vop_warn; / warning message of this operand, if any */
	39	const char vop_error; / say if operand is inappropriate */
	40	char vop_expr_begin; / Unparsed expression, 1st char ... */
	41	char vop_expr_end; / ... last char. */
	42	unsigned char vop_nbytes; /* number of bytes in datum */
	43	};
	44
252b5132 RH	45	typedef long vax_opcodeT; /* For initialising array of opcodes */
	46	/* Some synthetic opcodes > 16 bits! */
	47
	48	#define VIT_OPCODE_SYNTHETIC 0x80000000 /* Not real hardware instruction. */
	49	#define VIT_OPCODE_SPECIAL 0x40000000 /* Not normal branch optimising. */
	50	/* Never set without ..._SYNTHETIC */
	51
	52	#define VAX_WIDTH_UNCONDITIONAL_JUMP '-' /* These are encoded into */
	53	#define VAX_WIDTH_CONDITIONAL_JUMP '?' /* vop_width when vop_access=='b' */
	54	#define VAX_WIDTH_WORD_JUMP '!' /* and VIT_OPCODE_SYNTHETIC set. */
	55	#define VAX_WIDTH_BYTE_JUMP ':' /* */
	56
7542c0f2	57	#define VAX_JSB (0x16) /* Jump to subroutine */
252b5132 RH	58	#define VAX_JMP (0x17) /* Useful for branch optimising. Jump instr*/
	59	#define VAX_PC_RELATIVE_MODE (0xef) /* Use it after VAX_JMP */
	60	#define VAX_ABSOLUTE_MODE (0x9F)/* Use as @#... */
	61	#define VAX_BRB (0x11) /* Canonical branch. */
	62	#define VAX_BRW (0x31) /* Another canonical branch */
7542c0f2 JT	63	#define VAX_CALLS (0xFB) /* Call with arg list on stack */
7542c0f2 JT	64	#define VAX_CALLG (0xFA) /* Call with arg list in memory */
4a1805b1	65	#define VAX_WIDEN_WORD (0x20) /* Add this to byte branch to get word br. */
252b5132 RH	66	#define VAX_WIDEN_LONG (0x6) /* Add this to byte branch to get long jmp.*/
	67	/* Needs VAX_PC_RELATIVE_MODE byte after it*/
	68
	69	struct vit /* vax instruction tree */
	70	{
	71	/* vit_opcode is char[] for portability. */
	72	char vit_opcode[sizeof (vax_opcodeT)];
	73	unsigned char vit_opcode_nbytes; /* How long is _opcode? (chars) */
	74	unsigned char vit_operands; /* */
	75	struct vop vit_operand[VIT_MAX_OPERANDS]; /* operands */
	76	const char vit_error; / "" or error text */
	77	};
	78
	79	/* end of vax-inst.h */