/* $OpenBSD: mips_opcode.h,v 1.2 2005/08/07 07:29:44 miod 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. * * from: @(#)mips_opcode.h 8.1 (Berkeley) 6/10/93 */ #ifndef _MIPS_MIPS_OPCODE_H_ #define _MIPS_MIPS_OPCODE_H_ /* * Define the instruction formats and opcode values for the * MIPS instruction set. */ /* * 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; /* * 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_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_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_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_LD 067 #define OP_SC 070 #define OP_SWC1 071 #define OP_SWC2 072 #define OP_SWC3 073 #define OP_SCD 074 #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 #define OP_JR 010 #define OP_JALR 011 #define OP_SYSCALL 014 #define OP_BREAK 015 #define OP_SYNC 017 #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_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_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 /* * 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_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_BLTZAL 020 #define OP_BGEZAL 021 #define OP_BLTZALL 022 #define OP_BGEZALL 023 /* * 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 /* !_MIPS_MIPS_OPCODE_H_ */