mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-18 11:08:26 +00:00
209 lines
5.7 KiB
C
209 lines
5.7 KiB
C
/* d10v.h -- Header file for D10V opcode table
|
|
Copyright (C) 1996-2014 Free Software Foundation, Inc.
|
|
Written by Martin Hunt (hunt@cygnus.com), Cygnus Support
|
|
|
|
This file is part of GDB, GAS, and the GNU binutils.
|
|
|
|
GDB, GAS, and the GNU binutils are free software; you can redistribute
|
|
them and/or modify them 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.
|
|
|
|
GDB, GAS, and the GNU binutils are distributed in the hope that they
|
|
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 this file; see the file COPYING3. If not, write to the Free
|
|
Software Foundation, 51 Franklin Street - Fifth Floor, Boston,
|
|
MA 02110-1301, USA. */
|
|
|
|
#ifndef D10V_H
|
|
#define D10V_H
|
|
|
|
/* Format Specifier */
|
|
#define FM00 0
|
|
#define FM01 0x40000000
|
|
#define FM10 0x80000000
|
|
#define FM11 0xC0000000
|
|
|
|
#define NOP 0x5e00
|
|
#define OPCODE_DIVS 0x14002800
|
|
|
|
/* The opcode table is an array of struct d10v_opcode. */
|
|
|
|
struct d10v_opcode
|
|
{
|
|
/* The opcode name. */
|
|
const char *name;
|
|
|
|
/* the opcode format */
|
|
int format;
|
|
|
|
/* These numbers were picked so we can do if( i & SHORT_OPCODE) */
|
|
#define SHORT_OPCODE 1
|
|
#define LONG_OPCODE 8
|
|
#define SHORT_2 1 /* short with 2 operands */
|
|
#define SHORT_B 3 /* short with 8-bit branch */
|
|
#define LONG_B 8 /* long with 16-bit branch */
|
|
#define LONG_L 10 /* long with 3 operands */
|
|
#define LONG_R 12 /* reserved */
|
|
|
|
/* just a placeholder for variable-length instructions */
|
|
/* for example, "bra" will be a fake for "bra.s" and bra.l" */
|
|
/* which will immediately follow in the opcode table. */
|
|
#define OPCODE_FAKE 32
|
|
|
|
/* the number of cycles */
|
|
int cycles;
|
|
|
|
/* the execution unit(s) used */
|
|
int unit;
|
|
#define EITHER 0
|
|
#define IU 1
|
|
#define MU 2
|
|
#define BOTH 3
|
|
|
|
/* execution type; parallel or sequential */
|
|
/* this field is used to decide if two instructions */
|
|
/* can be executed in parallel */
|
|
int exec_type;
|
|
#define PARONLY 1 /* parallel only */
|
|
#define SEQ 2 /* must be sequential */
|
|
#define PAR 4 /* may be parallel */
|
|
#define BRANCH_LINK 8 /* subroutine call. must be aligned */
|
|
#define RMEM 16 /* reads memory */
|
|
#define WMEM 32 /* writes memory */
|
|
#define RF0 64 /* reads f0 */
|
|
#define WF0 128 /* modifies f0 */
|
|
#define WCAR 256 /* write Carry */
|
|
#define BRANCH 512 /* branch, no link */
|
|
#define ALONE 1024 /* short but pack with a NOP if on asm line alone */
|
|
|
|
/* the opcode */
|
|
long opcode;
|
|
|
|
/* mask. if( (i & mask) == opcode ) then match */
|
|
long mask;
|
|
|
|
/* An array of operand codes. Each code is an index into the
|
|
operand table. They appear in the order which the operands must
|
|
appear in assembly code, and are terminated by a zero. */
|
|
unsigned char operands[6];
|
|
};
|
|
|
|
/* The table itself is sorted by major opcode number, and is otherwise
|
|
in the order in which the disassembler should consider
|
|
instructions. */
|
|
extern const struct d10v_opcode d10v_opcodes[];
|
|
extern const int d10v_num_opcodes;
|
|
|
|
/* The operands table is an array of struct d10v_operand. */
|
|
struct d10v_operand
|
|
{
|
|
/* The number of bits in the operand. */
|
|
int bits;
|
|
|
|
/* How far the operand is left shifted in the instruction. */
|
|
int shift;
|
|
|
|
/* One bit syntax flags. */
|
|
int flags;
|
|
};
|
|
|
|
/* Elements in the table are retrieved by indexing with values from
|
|
the operands field of the d10v_opcodes table. */
|
|
|
|
extern const struct d10v_operand d10v_operands[];
|
|
|
|
/* Values defined for the flags field of a struct d10v_operand. */
|
|
|
|
/* the operand must be an even number */
|
|
#define OPERAND_EVEN (1)
|
|
|
|
/* the operand must be an odd number */
|
|
#define OPERAND_ODD (2)
|
|
|
|
/* this is the destination register; it will be modified */
|
|
/* this is used by the optimizer */
|
|
#define OPERAND_DEST (4)
|
|
|
|
/* number or symbol */
|
|
#define OPERAND_NUM (8)
|
|
|
|
/* address or label */
|
|
#define OPERAND_ADDR (0x10)
|
|
|
|
/* register */
|
|
#define OPERAND_REG (0x20)
|
|
|
|
/* postincrement + */
|
|
#define OPERAND_PLUS (0x40)
|
|
|
|
/* postdecrement - */
|
|
#define OPERAND_MINUS (0x80)
|
|
|
|
/* @ */
|
|
#define OPERAND_ATSIGN (0x100)
|
|
|
|
/* @( */
|
|
#define OPERAND_ATPAR (0x200)
|
|
|
|
/* accumulator 0 */
|
|
#define OPERAND_ACC0 (0x400)
|
|
|
|
/* accumulator 1 */
|
|
#define OPERAND_ACC1 (0x800)
|
|
|
|
/* f0 / f1 flag register */
|
|
#define OPERAND_FFLAG (0x1000)
|
|
|
|
/* c flag register */
|
|
#define OPERAND_CFLAG (0x2000)
|
|
|
|
/* control register */
|
|
#define OPERAND_CONTROL (0x4000)
|
|
|
|
/* predecrement mode '@-sp' */
|
|
#define OPERAND_ATMINUS (0x8000)
|
|
|
|
/* signed number */
|
|
#define OPERAND_SIGNED (0x10000)
|
|
|
|
/* special accumulator shifts need a 4-bit number */
|
|
/* 1 <= x <= 16 */
|
|
#define OPERAND_SHIFT (0x20000)
|
|
|
|
/* general purpose register */
|
|
#define OPERAND_GPR (0x40000)
|
|
|
|
/* special imm3 values with range restricted to -2 <= imm3 <= 3 */
|
|
/* needed for rac/rachi */
|
|
#define RESTRICTED_NUM3 (0x80000)
|
|
|
|
/* Pre-decrement is only supported for SP. */
|
|
#define OPERAND_SP (0x100000)
|
|
|
|
/* Post-decrement is not supported for SP. Like OPERAND_EVEN, and
|
|
unlike OPERAND_SP, this flag doesn't prevent the instruction from
|
|
matching, it only fails validation later on. */
|
|
#define OPERAND_NOSP (0x200000)
|
|
|
|
/* Structure to hold information about predefined registers. */
|
|
struct pd_reg
|
|
{
|
|
char *name; /* name to recognize */
|
|
char *pname; /* name to print for this register */
|
|
int value;
|
|
};
|
|
|
|
extern const struct pd_reg d10v_predefined_registers[];
|
|
int d10v_reg_name_cnt (void);
|
|
|
|
/* an expressionS only has one register type, so we fake it */
|
|
/* by setting high bits to indicate type */
|
|
#define REGISTER_MASK 0xFF
|
|
|
|
#endif /* D10V_H */
|