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mips32r2 and mips64r2 (and close relatives) processors. There presently is support for ADMtek ADM5120, A mips 4Kc in a malta board, the RB533 routerboard (based on IDT RC32434) and some preliminary support for sibtye/broadcom designs. Other hardware support will be forthcomcing. This port boots multiuser under gxemul emulating the malta board and also bootstraps on the hardware whose support is forthcoming... Oleksandr Tymoshenko, Wojciech Koszek, Warner Losh, Olivier Houchard, Randall Stewert and others that have contributed to the mips2 and/or mips2-jnpr perforce branches. Juniper contirbuted a generic mips port late in the life cycle of the misp2 branch. Warner Losh merged the mips2 and Juniper code bases, and others list above have worked for the past several months to get to multiuser. In addition, the mips2 work owe a debt to the trail blazing efforts of the original mips branch in perforce done by Juli Mallett.
414 lines
9.1 KiB
C
414 lines
9.1 KiB
C
/* $OpenBSD: mips_opcode.h,v 1.2 1999/01/27 04:46:05 imp 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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* 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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* from: @(#)mips_opcode.h 8.1 (Berkeley) 6/10/93
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* JNPR: mips_opcode.h,v 1.1 2006/08/07 05:38:57 katta
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* $FreeBSD$
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*/
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#ifndef _MACHINE_MIPS_OPCODE_H_
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#define _MACHINE_MIPS_OPCODE_H_
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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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#include <machine/endian.h>
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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 == BIG_ENDIAN
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struct {
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unsigned op: 6;
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unsigned rs: 5;
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unsigned rt: 5;
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unsigned imm: 16;
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} IType;
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struct {
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unsigned op: 6;
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unsigned target: 26;
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} JType;
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struct {
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unsigned op: 6;
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unsigned rs: 5;
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unsigned rt: 5;
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unsigned rd: 5;
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unsigned shamt: 5;
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unsigned func: 6;
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} RType;
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struct {
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unsigned op: 6; /* always '0x11' */
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unsigned : 1; /* always '1' */
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unsigned fmt: 4;
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unsigned ft: 5;
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unsigned fs: 5;
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unsigned fd: 5;
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unsigned func: 6;
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} FRType;
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#endif
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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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/* instruction field decoding macros */
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#define MIPS_INST_OPCODE(val) (val >> 26)
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#define MIPS_INST_RS(val) ((val & 0x03e00000) >> 21)
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#define MIPS_INST_RT(val) ((val & 0x001f0000) >> 16)
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#define MIPS_INST_IMM(val) ((val & 0x0000ffff))
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#define MIPS_INST_RD(val) ((val & 0x0000f800) >> 11)
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#define MIPS_INST_SA(val) ((val & 0x000007c0) >> 6)
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#define MIPS_INST_FUNC(val) (val & 0x0000003f)
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#define MIPS_INST_INDEX(val) (val & 0x03ffffff)
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/*
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* the mips opcode and function table use a 3bit row and 3bit col
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* number we define the following macro for easy transcribing
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*/
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#define MIPS_OPCODE(r, c) (((r & 0x07) << 3) | (c & 0x07))
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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_REGIMM OP_BCOND
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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
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#define OP_BNEL 025
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#define OP_BLEZL 026
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#define OP_BGTZL 027
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#define OP_COP1X OP_COP3
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#define OP_DADDI 030
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#define OP_DADDIU 031
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#define OP_LDL 032
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#define OP_LDR 033
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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_LWU 047
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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
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#define OP_SDR 055
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#define OP_SWR 056
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#define OP_CACHE 057
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#define OP_LL 060
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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
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#define OP_LDC1 065
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#define OP_LDC2 066
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#define OP_LD 067
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#define OP_PREF OP_LWC3
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#define OP_SC 070
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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
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#define OP_SDC1 075
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#define OP_SDC2 076
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#define OP_SD 077
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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_MOVCI 001
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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_F_SLL OP_SLL
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#define OP_F_MOVCI OP_MOVCI
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#define OP_F_SRL OP_SRL
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#define OP_F_SRA OP_SRA
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#define OP_F_SLLV OP_SLLV
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#define OP_F_SRLV OP_SRLV
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#define OP_F_SRAV OP_SRAV
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#define OP_JR 010
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#define OP_JALR 011
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#define OP_MOVZ 012
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#define OP_MOVN 013
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#define OP_SYSCALL 014
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#define OP_BREAK 015
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#define OP_SYNC 017
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#define OP_F_JR OP_JR
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#define OP_F_JALR OP_JALR
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#define OP_F_MOVZ OP_MOVZ
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#define OP_F_MOVN OP_MOVN
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#define OP_F_SYSCALL OP_SYSCALL
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#define OP_F_BREAK OP_BREAK
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#define OP_F_SYNC OP_SYNC
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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
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#define OP_DSRLV 026
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#define OP_DSRAV 027
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#define OP_F_MFHI OP_MFHI
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#define OP_F_MTHI OP_MTHI
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#define OP_F_MFLO OP_MFLO
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#define OP_F_MTLO OP_MTLO
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#define OP_F_DSLLV OP_DSLLV
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#define OP_F_DSRLV OP_DSRLV
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#define OP_F_DSRAV OP_DSRAV
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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
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#define OP_DMULTU 035
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#define OP_DDIV 036
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#define OP_DDIVU 037
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#define OP_F_MULT OP_MULT
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#define OP_F_MULTU OP_MULTU
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#define OP_F_DIV OP_DIV
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#define OP_F_DIVU OP_DIVU
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#define OP_F_DMULT OP_DMULT
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#define OP_F_DMULTU OP_DMULTU
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#define OP_F_DDIV OP_DDIV
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#define OP_F_DDIVU OP_DDIVU
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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_F_ADD OP_ADD
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#define OP_F_ADDU OP_ADDU
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#define OP_F_SUB OP_SUB
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#define OP_F_SUBU OP_SUBU
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#define OP_F_AND OP_AND
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#define OP_F_OR OP_OR
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#define OP_F_XOR OP_XOR
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#define OP_F_NOR OP_NOR
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#define OP_SLT 052
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#define OP_SLTU 053
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#define OP_DADD 054
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#define OP_DADDU 055
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#define OP_DSUB 056
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#define OP_DSUBU 057
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#define OP_F_SLT OP_SLT
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#define OP_F_SLTU OP_SLTU
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#define OP_F_DADD OP_DADD
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#define OP_F_DADDU OP_DADDU
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#define OP_F_DSUB OP_DSUB
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#define OP_F_DSUBU OP_DSUBU
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#define OP_TGE 060
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#define OP_TGEU 061
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#define OP_TLT 062
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#define OP_TLTU 063
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#define OP_TEQ 064
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#define OP_TNE 066
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#define OP_F_TGE OP_TGE
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#define OP_F_TGEU OP_TGEU
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#define OP_F_TLT OP_TLT
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#define OP_F_TLTU OP_TLTU
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#define OP_F_TEQ OP_TEQ
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#define OP_F_TNE OP_TNE
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#define OP_DSLL 070
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#define OP_DSRL 072
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#define OP_DSRA 073
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#define OP_DSLL32 074
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#define OP_DSRL32 076
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#define OP_DSRA32 077
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#define OP_F_DSLL OP_DSLL
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#define OP_F_DSRL OP_DSRL
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#define OP_F_DSRA OP_DSRA
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#define OP_F_DSLL32 OP_DSLL32
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#define OP_F_DSRL32 OP_DSRL32
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#define OP_F_DSRA32 OP_DSRA32
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/*
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* The REGIMM - register immediate instructions are further
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* decoded using this table that has 2bit row numbers, hence
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* a need for a new helper macro.
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*/
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#define MIPS_ROP(r, c) ((r & 0x03) << 3) | (c & 0x07)
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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
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#define OP_BGEZL 003
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#define OP_R_BLTZ OP_BLTZ
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#define OP_R_BGEZ OP_BGEZ
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#define OP_R_BLTZL OP_BLTZL
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#define OP_R_BGEZL OP_BGEZL
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#define OP_TGEI 010
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#define OP_TGEIU 011
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#define OP_TLTI 012
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#define OP_TLTIU 013
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#define OP_TEQI 014
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#define OP_TNEI 016
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#define OP_R_TGEI OP_TGEI
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#define OP_R_TGEIU OP_TGEIU
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#define OP_R_TLTI OP_TLTI
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#define OP_R_TLTIU OP_TLTIU
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#define OP_R_TEQI OP_TEQI
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#define OP_R_TNEI OP_TNEI
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#define OP_BLTZAL 020
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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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#define OP_R_BLTZAL OP_BLTZAL
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#define OP_R_BGEZAL OP_BGEZAL
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#define OP_R_BLTZALL OP_BLTZALL
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#define OP_R_BGEZALL OP_BGEZALL
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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
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#define OP_MT 004
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#define OP_DMT 005
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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
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#define COPz_BCL_TRUE 0x02
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#define COPz_BCL_FALSE 0x00
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#endif /* !_MACHINE_MIPS_OPCODE_H_ */
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