/* $NetBSD: mips_opcode.h,v 1.12 2005/12/11 12:18:09 christos 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.
* 3. 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.
*
* @(#)mips_opcode.h 8.1 (Berkeley) 6/10/93
*/
/*
* Define the instruction formats and opcode values for the
* MIPS instruction set.
*/
#include <endian.h>
/*
* Define the instruction formats.
*/
typedef union {
unsigned word;
#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
#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
} InstFmt;
/*
* 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
#if __mips_isa_rev < 6
#define OP_ADDI 010
#else
#define OP_POP10 010
#endif
#define OP_ADDIU 011
#define OP_SLTI 012
#define OP_SLTIU 013
#define OP_ANDI 014
#define OP_ORI 015
#define OP_XORI 016
#if __mips_isa_rev < 6
#define OP_LUI 017
#else
#define OP_AUI 017
#endif
#define OP_COP0 020
#define OP_COP1 021
#define OP_COP2 022
#if __mips_isa_rev < 6
#define OP_COP3 023
#define OP_BEQL 024
#define OP_BNEL 025
#define OP_BLEZL 026
#define OP_BGTZL 027
#define OP_DADDI 030
#else
#define OP_POP26 026
#define OP_POP27 027
#define OP_POP30 030
#endif
#define OP_DADDIU 031
#if __mips_isa_rev < 6
#define OP_LDL 032
#define OP_LDR 033
#define OP_SPECIAL2 034
#else
#define OP_DAUI 035
#endif
#define OP_SPECIAL3 037
#define OP_LB 040
#define OP_LH 041
#if __mips_isa_rev < 6
#define OP_LWL 042
#endif
#define OP_LW 043
#define OP_LBU 044
#define OP_LHU 045
#define OP_LWR 046
#define OP_LHU 045
#if __mips_isa_rev < 6
#define OP_LWR 046
#endif
#define OP_LWU 047
#define OP_SB 050
#define OP_SH 051
#if __mips_isa_rev < 6
#define OP_SWL 052
#endif
#define OP_SW 053
#if __mips_isa_rev < 6
#define OP_SDL 054
#define OP_SDR 055
#define OP_SWR 056
#define OP_CACHE 057
#define OP_LL 060
#define OP_LWC0 OP_LL
#define OP_LWC1 061
#define OP_LWC2 062
#define OP_LWC3 063
#define OP_LLD 064
#else
#define OP_LWC1 061
#define OP_BC 062
#endif
#define OP_LDC1 065
#define OP_LD 067
#if __mips_isa_rev < 6
#define OP_SC 070
#define OP_SWC0 OP_SC
#endif
#define OP_SWC1 071
#if __mips_isa_rev < 6
#define OP_SWC2 072
#define OP_SWC3 073
#define OP_SCD 074
#else
#define OP_BALC 072
#endif
#define OP_SDC1 075
#define OP_SD 077
/*
* Values for the 'func' field when 'op' == OP_SPECIAL.
*/
#define OP_SLL 000
#define OP_SRL 002
#define OP_SRA 003
#define OP_SLLV 004
#define OP_SRLV 006
#define OP_SRAV 007
#if __mips_isa_rev < 6
#define OP_JR 010
#endif
#define OP_JALR 011
#define OP_SYSCALL 014
#define OP_BREAK 015
#define OP_SYNC 017
#if __mips_isa_rev < 6
#define OP_MFHI 020
#define OP_MTHI 021
#define OP_MFLO 022
#define OP_MTLO 023
#else
#define OP_CLZ 020
#define OP_CLO 021
#define OP_DCLZ 022
#define OP_DCLO 023
#endif
#define OP_DSLLV 024
#define OP_DSRLV 026
#define OP_DSRAV 027
#if __mips_isa_rev < 6
#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
#else
#define OP_SOP30 030
#define OP_SOP31 031
#define OP_SOP32 032
#define OP_SOP33 033
#define OP_SOP34 034
#define OP_SOP35 035
#define OP_SOP36 036
#define OP_SOP37 037
#endif
#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_SLT 052
#define OP_SLTU 053
#define OP_DADD 054
#define OP_DADDU 055
#define OP_DSUB 056
#define OP_DSUBU 057
#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_DSLL 070
#define OP_DSRL 072
#define OP_DSRA 073
#define OP_DSLL32 074
#define OP_DSRL32 076
#define OP_DSRA32 077
#if __mips_isa_rev < 6
/*
* Values for the 'func' field when 'op' == OP_SPECIAL2.
* OP_SPECIAL2 opcodes are removed in mips32r6
*/
#define OP_MAD 000 /* QED */
#define OP_MADU 001 /* QED */
#define OP_MUL 002 /* QED */
#endif
/*
* Values for the 'func' field when 'op' == OP_SPECIAL3.
*/
#define OP_EXT 000
#define OP_DEXTM 001
#define OP_DEXTU 002
#define OP_DEXT 003
#define OP_INS 004
#define OP_DINSM 005
#define OP_DINSU 006
#define OP_DINS 007
#define OP_BSHFL 040
#define OP_RDHWR 073
/*
* Values for the 'shamt' field when OP_SPECIAL3 && func OP_BSHFL.
*/
#define OP_WSBH 002
#define OP_SEB 020
#define OP_SEH 030
#if __mips_isa_rev == 6
/*
* Values for the 'shamt' field when OP_SOP30.
*/
#define OP_MUL 002
#define OP_MUH 003
#endif
/*
* Values for the 'func' field when 'op' == OP_BCOND.
*/
#define OP_BLTZ 000
#define OP_BGEZ 001
#if __mips_isa_rev < 6
#define OP_BLTZL 002
#define OP_BGEZL 003
#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_BLTZAL 020
#define OP_BGEZAL 021
#define OP_BLTZALL 022
#define OP_BGEZALL 023
#else
#define OP_NAL 020
#define OP_BAL 021
#endif
/*
* 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