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| Current File : //sys/mips/include/mips_opcode.h |
/* $OpenBSD: mips_opcode.h,v 1.2 1999/01/27 04:46:05 imp Exp $ */
/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Ralph Campbell.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)mips_opcode.h 8.1 (Berkeley) 6/10/93
* JNPR: mips_opcode.h,v 1.1 2006/08/07 05:38:57 katta
* $FreeBSD: release/9.1.0/sys/mips/include/mips_opcode.h 202175 2010-01-12 21:36:08Z imp $
*/
#ifndef _MACHINE_MIPS_OPCODE_H_
#define _MACHINE_MIPS_OPCODE_H_
/*
* Define the instruction formats and opcode values for the
* MIPS instruction set.
*/
#include <machine/endian.h>
/*
* Define the instruction formats.
*/
typedef union {
unsigned word;
#if BYTE_ORDER == BIG_ENDIAN
struct {
unsigned op: 6;
unsigned rs: 5;
unsigned rt: 5;
unsigned imm: 16;
} IType;
struct {
unsigned op: 6;
unsigned target: 26;
} JType;
struct {
unsigned op: 6;
unsigned rs: 5;
unsigned rt: 5;
unsigned rd: 5;
unsigned shamt: 5;
unsigned func: 6;
} RType;
struct {
unsigned op: 6; /* always '0x11' */
unsigned : 1; /* always '1' */
unsigned fmt: 4;
unsigned ft: 5;
unsigned fs: 5;
unsigned fd: 5;
unsigned func: 6;
} FRType;
#endif
#if BYTE_ORDER == LITTLE_ENDIAN
struct {
unsigned imm: 16;
unsigned rt: 5;
unsigned rs: 5;
unsigned op: 6;
} IType;
struct {
unsigned target: 26;
unsigned op: 6;
} JType;
struct {
unsigned func: 6;
unsigned shamt: 5;
unsigned rd: 5;
unsigned rt: 5;
unsigned rs: 5;
unsigned op: 6;
} RType;
struct {
unsigned func: 6;
unsigned fd: 5;
unsigned fs: 5;
unsigned ft: 5;
unsigned fmt: 4;
unsigned : 1; /* always '1' */
unsigned op: 6; /* always '0x11' */
} FRType;
#endif
} InstFmt;
/* instruction field decoding macros */
#define MIPS_INST_OPCODE(val) (val >> 26)
#define MIPS_INST_RS(val) ((val & 0x03e00000) >> 21)
#define MIPS_INST_RT(val) ((val & 0x001f0000) >> 16)
#define MIPS_INST_IMM(val) ((val & 0x0000ffff))
#define MIPS_INST_RD(val) ((val & 0x0000f800) >> 11)
#define MIPS_INST_SA(val) ((val & 0x000007c0) >> 6)
#define MIPS_INST_FUNC(val) (val & 0x0000003f)
#define MIPS_INST_INDEX(val) (val & 0x03ffffff)
/*
* the mips opcode and function table use a 3bit row and 3bit col
* number we define the following macro for easy transcribing
*/
#define MIPS_OPCODE(r, c) (((r & 0x07) << 3) | (c & 0x07))
/*
* Values for the 'op' field.
*/
#define OP_SPECIAL 000
#define OP_BCOND 001
#define OP_J 002
#define OP_JAL 003
#define OP_BEQ 004
#define OP_BNE 005
#define OP_BLEZ 006
#define OP_BGTZ 007
#define OP_REGIMM OP_BCOND
#define OP_ADDI 010
#define OP_ADDIU 011
#define OP_SLTI 012
#define OP_SLTIU 013
#define OP_ANDI 014
#define OP_ORI 015
#define OP_XORI 016
#define OP_LUI 017
#define OP_COP0 020
#define OP_COP1 021
#define OP_COP2 022
#define OP_COP3 023
#define OP_BEQL 024
#define OP_BNEL 025
#define OP_BLEZL 026
#define OP_BGTZL 027
#define OP_COP1X OP_COP3
#define OP_DADDI 030
#define OP_DADDIU 031
#define OP_LDL 032
#define OP_LDR 033
#define OP_LB 040
#define OP_LH 041
#define OP_LWL 042
#define OP_LW 043
#define OP_LBU 044
#define OP_LHU 045
#define OP_LWR 046
#define OP_LWU 047
#define OP_SB 050
#define OP_SH 051
#define OP_SWL 052
#define OP_SW 053
#define OP_SDL 054
#define OP_SDR 055
#define OP_SWR 056
#define OP_CACHE 057
#define OP_LL 060
#define OP_LWC1 061
#define OP_LWC2 062
#define OP_LWC3 063
#define OP_LLD 064
#define OP_LDC1 065
#define OP_LDC2 066
#define OP_LD 067
#define OP_PREF OP_LWC3
#define OP_SC 070
#define OP_SWC1 071
#define OP_SWC2 072
#define OP_SWC3 073
#define OP_SCD 074
#define OP_SDC1 075
#define OP_SDC2 076
#define OP_SD 077
/*
* Values for the 'func' field when 'op' == OP_SPECIAL.
*/
#define OP_SLL 000
#define OP_MOVCI 001
#define OP_SRL 002
#define OP_SRA 003
#define OP_SLLV 004
#define OP_SRLV 006
#define OP_SRAV 007
#define OP_F_SLL OP_SLL
#define OP_F_MOVCI OP_MOVCI
#define OP_F_SRL OP_SRL
#define OP_F_SRA OP_SRA
#define OP_F_SLLV OP_SLLV
#define OP_F_SRLV OP_SRLV
#define OP_F_SRAV OP_SRAV
#define OP_JR 010
#define OP_JALR 011
#define OP_MOVZ 012
#define OP_MOVN 013
#define OP_SYSCALL 014
#define OP_BREAK 015
#define OP_SYNC 017
#define OP_F_JR OP_JR
#define OP_F_JALR OP_JALR
#define OP_F_MOVZ OP_MOVZ
#define OP_F_MOVN OP_MOVN
#define OP_F_SYSCALL OP_SYSCALL
#define OP_F_BREAK OP_BREAK
#define OP_F_SYNC OP_SYNC
#define OP_MFHI 020
#define OP_MTHI 021
#define OP_MFLO 022
#define OP_MTLO 023
#define OP_DSLLV 024
#define OP_DSRLV 026
#define OP_DSRAV 027
#define OP_F_MFHI OP_MFHI
#define OP_F_MTHI OP_MTHI
#define OP_F_MFLO OP_MFLO
#define OP_F_MTLO OP_MTLO
#define OP_F_DSLLV OP_DSLLV
#define OP_F_DSRLV OP_DSRLV
#define OP_F_DSRAV OP_DSRAV
#define OP_MULT 030
#define OP_MULTU 031
#define OP_DIV 032
#define OP_DIVU 033
#define OP_DMULT 034
#define OP_DMULTU 035
#define OP_DDIV 036
#define OP_DDIVU 037
#define OP_F_MULT OP_MULT
#define OP_F_MULTU OP_MULTU
#define OP_F_DIV OP_DIV
#define OP_F_DIVU OP_DIVU
#define OP_F_DMULT OP_DMULT
#define OP_F_DMULTU OP_DMULTU
#define OP_F_DDIV OP_DDIV
#define OP_F_DDIVU OP_DDIVU
#define OP_ADD 040
#define OP_ADDU 041
#define OP_SUB 042
#define OP_SUBU 043
#define OP_AND 044
#define OP_OR 045
#define OP_XOR 046
#define OP_NOR 047
#define OP_F_ADD OP_ADD
#define OP_F_ADDU OP_ADDU
#define OP_F_SUB OP_SUB
#define OP_F_SUBU OP_SUBU
#define OP_F_AND OP_AND
#define OP_F_OR OP_OR
#define OP_F_XOR OP_XOR
#define OP_F_NOR OP_NOR
#define OP_SLT 052
#define OP_SLTU 053
#define OP_DADD 054
#define OP_DADDU 055
#define OP_DSUB 056
#define OP_DSUBU 057
#define OP_F_SLT OP_SLT
#define OP_F_SLTU OP_SLTU
#define OP_F_DADD OP_DADD
#define OP_F_DADDU OP_DADDU
#define OP_F_DSUB OP_DSUB
#define OP_F_DSUBU OP_DSUBU
#define OP_TGE 060
#define OP_TGEU 061
#define OP_TLT 062
#define OP_TLTU 063
#define OP_TEQ 064
#define OP_TNE 066
#define OP_F_TGE OP_TGE
#define OP_F_TGEU OP_TGEU
#define OP_F_TLT OP_TLT
#define OP_F_TLTU OP_TLTU
#define OP_F_TEQ OP_TEQ
#define OP_F_TNE OP_TNE
#define OP_DSLL 070
#define OP_DSRL 072
#define OP_DSRA 073
#define OP_DSLL32 074
#define OP_DSRL32 076
#define OP_DSRA32 077
#define OP_F_DSLL OP_DSLL
#define OP_F_DSRL OP_DSRL
#define OP_F_DSRA OP_DSRA
#define OP_F_DSLL32 OP_DSLL32
#define OP_F_DSRL32 OP_DSRL32
#define OP_F_DSRA32 OP_DSRA32
/*
* The REGIMM - register immediate instructions are further
* decoded using this table that has 2bit row numbers, hence
* a need for a new helper macro.
*/
#define MIPS_ROP(r, c) ((r & 0x03) << 3) | (c & 0x07)
/*
* Values for the 'func' field when 'op' == OP_BCOND.
*/
#define OP_BLTZ 000
#define OP_BGEZ 001
#define OP_BLTZL 002
#define OP_BGEZL 003
#define OP_R_BLTZ OP_BLTZ
#define OP_R_BGEZ OP_BGEZ
#define OP_R_BLTZL OP_BLTZL
#define OP_R_BGEZL OP_BGEZL
#define OP_TGEI 010
#define OP_TGEIU 011
#define OP_TLTI 012
#define OP_TLTIU 013
#define OP_TEQI 014
#define OP_TNEI 016
#define OP_R_TGEI OP_TGEI
#define OP_R_TGEIU OP_TGEIU
#define OP_R_TLTI OP_TLTI
#define OP_R_TLTIU OP_TLTIU
#define OP_R_TEQI OP_TEQI
#define OP_R_TNEI OP_TNEI
#define OP_BLTZAL 020
#define OP_BGEZAL 021
#define OP_BLTZALL 022
#define OP_BGEZALL 023
#define OP_R_BLTZAL OP_BLTZAL
#define OP_R_BGEZAL OP_BGEZAL
#define OP_R_BLTZALL OP_BLTZALL
#define OP_R_BGEZALL OP_BGEZALL
/*
* Values for the 'rs' field when 'op' == OP_COPz.
*/
#define OP_MF 000
#define OP_DMF 001
#define OP_MT 004
#define OP_DMT 005
#define OP_BCx 010
#define OP_BCy 014
#define OP_CF 002
#define OP_CT 006
/*
* Values for the 'rt' field when 'op' == OP_COPz.
*/
#define COPz_BC_TF_MASK 0x01
#define COPz_BC_TRUE 0x01
#define COPz_BC_FALSE 0x00
#define COPz_BCL_TF_MASK 0x02
#define COPz_BCL_TRUE 0x02
#define COPz_BCL_FALSE 0x00
#endif /* !_MACHINE_MIPS_OPCODE_H_ */