262 lines
7.5 KiB
C
262 lines
7.5 KiB
C
/* $NetBSD: mips_opcode.h,v 1.5 1996/03/23 18:49:29 jonathan Exp $ */
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/*-
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Ralph Campbell.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)mips_opcode.h 8.1 (Berkeley) 6/10/93
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*/
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/*
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* Define the instruction formats and opcode values for the
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* MIPS instruction set.
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*/
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/*
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* Define the instruction formats.
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*/
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typedef union {
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unsigned word;
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#if BYTE_ORDER == LITTLE_ENDIAN
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struct {
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unsigned imm: 16;
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unsigned rt: 5;
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unsigned rs: 5;
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unsigned op: 6;
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} IType;
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struct {
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unsigned target: 26;
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unsigned op: 6;
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} JType;
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struct {
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unsigned func: 6;
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unsigned shamt: 5;
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unsigned rd: 5;
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unsigned rt: 5;
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unsigned rs: 5;
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unsigned op: 6;
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} RType;
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struct {
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unsigned func: 6;
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unsigned fd: 5;
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unsigned fs: 5;
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unsigned ft: 5;
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unsigned fmt: 4;
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unsigned : 1; /* always '1' */
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unsigned op: 6; /* always '0x11' */
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} FRType;
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#endif
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} InstFmt;
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/*
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* Values for the 'op' field.
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*/
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#define OP_SPECIAL 000
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#define OP_BCOND 001
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#define OP_J 002
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#define OP_JAL 003
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#define OP_BEQ 004
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#define OP_BNE 005
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#define OP_BLEZ 006
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#define OP_BGTZ 007
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#define OP_ADDI 010
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#define OP_ADDIU 011
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#define OP_SLTI 012
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#define OP_SLTIU 013
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#define OP_ANDI 014
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#define OP_ORI 015
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#define OP_XORI 016
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#define OP_LUI 017
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#define OP_COP0 020
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#define OP_COP1 021
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#define OP_COP2 022
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#define OP_COP3 023
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#define OP_BEQL 024 /* MIPS-II, for r4000 port */
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#define OP_BNEL 025 /* MIPS-II, for r4000 port */
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#define OP_BLEZL 026 /* MIPS-II, for r4000 port */
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#define OP_BGTZL 027 /* MIPS-II, for r4000 port */
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#define OP_DADDI 030 /* MIPS-II, for r4000 port */
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#define OP_DADDIU 031 /* MIPS-II, for r4000 port */
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#define OP_LDL 032 /* MIPS-II, for r4000 port */
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#define OP_LDR 033 /* MIPS-II, for r4000 port */
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#define OP_LB 040
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#define OP_LH 041
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#define OP_LWL 042
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#define OP_LW 043
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#define OP_LBU 044
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#define OP_LHU 045
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#define OP_LWR 046
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#define OP_LHU 045
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#define OP_LWR 046
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#define OP_LWU 047 /* MIPS-II, for r4000 port */
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#define OP_SB 050
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#define OP_SH 051
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#define OP_SWL 052
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#define OP_SW 053
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#define OP_SDL 054 /* MIPS-II, for r4000 port */
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#define OP_SDR 055 /* MIPS-II, for r4000 port */
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#define OP_SWR 056
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#define OP_CACHE 057 /* MIPS-II, for r4000 port */
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#define OP_LL 060
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#define OP_LWC0 OP_LL /* backwards source compatibility */
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#define OP_LWC1 061
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#define OP_LWC2 062
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#define OP_LWC3 063
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#define OP_LLD 064 /* MIPS-II, for r4000 port */
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#define OP_LD 067 /* MIPS-II, for r4000 port */
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#define OP_SC 070
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#define OP_SWC0 OP_SC /* backwards source compatibility */
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#define OP_SWC1 071
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#define OP_SWC2 072
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#define OP_SWC3 073
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#define OP_SCD 074 /* MIPS-II, for r4000 port */
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#define OP_SD 077 /* MIPS-II, for r4000 port */
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/*
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* Values for the 'func' field when 'op' == OP_SPECIAL.
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*/
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#define OP_SLL 000
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#define OP_SRL 002
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#define OP_SRA 003
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#define OP_SLLV 004
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#define OP_SRLV 006
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#define OP_SRAV 007
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#define OP_JR 010
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#define OP_JALR 011
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#define OP_SYSCALL 014
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#define OP_BREAK 015
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#define OP_SYNC 017 /* MIPS-II, for r4000 port */
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#define OP_MFHI 020
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#define OP_MTHI 021
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#define OP_MFLO 022
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#define OP_MTLO 023
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#define OP_DSLLV 024 /* MIPS-II, for r4000 port */
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#define OP_DSRLV 026 /* MIPS-II, for r4000 port */
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#define OP_DSRAV 027 /* MIPS-II, for r4000 port */
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#define OP_MULT 030
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#define OP_MULTU 031
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#define OP_DIV 032
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#define OP_DIVU 033
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#define OP_DMULT 034 /* MIPS-II, for r4000 port */
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#define OP_DMULTU 035 /* MIPS-II, for r4000 port */
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#define OP_DDIV 036 /* MIPS-II, for r4000 port */
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#define OP_DDIVU 037 /* MIPS-II, for r4000 port */
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#define OP_ADD 040
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#define OP_ADDU 041
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#define OP_SUB 042
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#define OP_SUBU 043
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#define OP_AND 044
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#define OP_OR 045
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#define OP_XOR 046
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#define OP_NOR 047
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#define OP_SLT 052
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#define OP_SLTU 053
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#define OP_DADD 054 /* MIPS-II, for r4000 port */
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#define OP_DADDU 055 /* MIPS-II, for r4000 port */
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#define OP_DSUB 056 /* MIPS-II, for r4000 port */
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#define OP_DSUBU 057 /* MIPS-II, for r4000 port */
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#define OP_TGE 060 /* MIPS-II, for r4000 port */
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#define OP_TGEU 061 /* MIPS-II, for r4000 port */
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#define OP_TLT 062 /* MIPS-II, for r4000 port */
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#define OP_TLTU 063 /* MIPS-II, for r4000 port */
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#define OP_TEQ 064 /* MIPS-II, for r4000 port */
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#define OP_TNE 066 /* MIPS-II, for r4000 port */
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#define OP_DSLL 070 /* MIPS-II, for r4000 port */
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#define OP_DSRL 072 /* MIPS-II, for r4000 port */
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#define OP_DSRA 073 /* MIPS-II, for r4000 port */
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#define OP_DSLL32 074 /* MIPS-II, for r4000 port */
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#define OP_DSRL32 076 /* MIPS-II, for r4000 port */
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#define OP_DSRA32 077 /* MIPS-II, for r4000 port */
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/*
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* Values for the 'func' field when 'op' == OP_BCOND.
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*/
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#define OP_BLTZ 000
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#define OP_BGEZ 001
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#define OP_BLTZL 002 /* MIPS-II, for r4000 port */
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#define OP_BGEZL 003 /* MIPS-II, for r4000 port */
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#define OP_TGEI 010 /* MIPS-II, for r4000 port */
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#define OP_TGEIU 011 /* MIPS-II, for r4000 port */
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#define OP_TLTI 012 /* MIPS-II, for r4000 port */
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#define OP_TLTIU 013 /* MIPS-II, for r4000 port */
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#define OP_TEQI 014 /* MIPS-II, for r4000 port */
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#define OP_TNEI 016 /* MIPS-II, for r4000 port */
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#define OP_BLTZAL 020
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#define OP_BLTZAL 020 /* MIPS-II, for r4000 port */
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#define OP_BGEZAL 021
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#define OP_BLTZALL 022
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#define OP_BGEZALL 023
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/*
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* Values for the 'rs' field when 'op' == OP_COPz.
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*/
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#define OP_MF 000
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#define OP_DMF 001 /* MIPS-II, for r4000 port */
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#define OP_MT 004
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#define OP_DMT 005 /* MIPS-II, for r4000 port */
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#define OP_BCx 010
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#define OP_BCy 014
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#define OP_CF 002
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#define OP_CT 006
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/*
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* Values for the 'rt' field when 'op' == OP_COPz.
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*/
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#define COPz_BC_TF_MASK 0x01
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#define COPz_BC_TRUE 0x01
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#define COPz_BC_FALSE 0x00
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#define COPz_BCL_TF_MASK 0x02 /* MIPS-II, for r4000 port */
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#define COPz_BCL_TRUE 0x02 /* MIPS-II, for r4000 port */
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#define COPz_BCL_FALSE 0x00 /* MIPS-II, for r4000 port */
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