/* d10v.h -- Header file for D10V opcode table
Copyright (C) 1996-2024 Free Software Foundation, Inc.
Written by Martin Hunt (
[email protected]), 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
#ifdef __cplusplus
extern "C" {
#endif
/* 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
#ifdef __cplusplus
}
#endif
#endif /* D10V_H */
