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opnsense-src/sys/mips/mips/db_disasm.c
Warner Losh 45d426a34e FreeBSD/mips port. The FreeBSD/mips port targets mips32, mips64, 
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.
2008-04-13 07:27:37 +00:00

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/* $OpenBSD: db_disasm.c,v 1.1 1998/03/16 09:03:24 pefo Exp $ */
/*-
* Copyright (c) 1991, 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 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: @(#)kadb.c 8.1 (Berkeley) 6/10/93
* Id: db_disasm.c,v 1.1 1998/03/16 09:03:24 pefo Exp
* JNPR: db_disasm.c,v 1.1 2006/08/07 05:38:57 katta
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <vm/vm_param.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <sys/systm.h>
#include <machine/mips_opcode.h>
#include <machine/db_machdep.h>
#include <ddb/ddb.h>
#include <ddb/db_output.h>
static char *op_name[64] = {
/* 0 */ "spec", "bcond","j", "jal", "beq", "bne", "blez", "bgtz",
/* 8 */ "addi", "addiu","slti", "sltiu","andi", "ori", "xori", "lui",
/*16 */ "cop0", "cop1", "cop2", "cop3", "beql", "bnel", "blezl","bgtzl",
/*24 */ "daddi","daddiu","ldl", "ldr", "op34", "op35", "op36", "op37",
/*32 */ "lb", "lh", "lwl", "lw", "lbu", "lhu", "lwr", "lwu",
/*40 */ "sb", "sh", "swl", "sw", "sdl", "sdr", "swr", "cache",
/*48 */ "ll", "lwc1", "lwc2", "lwc3", "lld", "ldc1", "ldc2", "ld",
/*56 */ "sc", "swc1", "swc2", "swc3", "scd", "sdc1", "sdc2", "sd"
};
static char *spec_name[64] = {
/* 0 */ "sll", "spec01","srl", "sra", "sllv", "spec05","srlv","srav",
/* 8 */ "jr", "jalr", "spec12","spec13","syscall","break","spec16","sync",
/*16 */ "mfhi", "mthi", "mflo", "mtlo", "dsllv","spec25","dsrlv","dsrav",
/*24 */ "mult", "multu","div", "divu", "dmult","dmultu","ddiv","ddivu",
/*32 */ "add", "addu", "sub", "subu", "and", "or", "xor", "nor",
/*40 */ "spec50","spec51","slt","sltu", "dadd","daddu","dsub","dsubu",
/*48 */ "tge","tgeu","tlt","tltu","teq","spec65","tne","spec67",
/*56 */ "dsll","spec71","dsrl","dsra","dsll32","spec75","dsrl32","dsra32"
};
static char *bcond_name[32] = {
/* 0 */ "bltz", "bgez", "bltzl", "bgezl", "?", "?", "?", "?",
/* 8 */ "tgei", "tgeiu", "tlti", "tltiu", "teqi", "?", "tnei", "?",
/*16 */ "bltzal", "bgezal", "bltzall", "bgezall", "?", "?", "?", "?",
/*24 */ "?", "?", "?", "?", "?", "?", "?", "?",
};
static char *cop1_name[64] = {
/* 0 */ "fadd", "fsub", "fmpy", "fdiv", "fsqrt","fabs", "fmov", "fneg",
/* 8 */ "fop08","fop09","fop0a","fop0b","fop0c","fop0d","fop0e","fop0f",
/*16 */ "fop10","fop11","fop12","fop13","fop14","fop15","fop16","fop17",
/*24 */ "fop18","fop19","fop1a","fop1b","fop1c","fop1d","fop1e","fop1f",
/*32 */ "fcvts","fcvtd","fcvte","fop23","fcvtw","fop25","fop26","fop27",
/*40 */ "fop28","fop29","fop2a","fop2b","fop2c","fop2d","fop2e","fop2f",
/*48 */ "fcmp.f","fcmp.un","fcmp.eq","fcmp.ueq","fcmp.olt","fcmp.ult",
"fcmp.ole","fcmp.ule",
/*56 */ "fcmp.sf","fcmp.ngle","fcmp.seq","fcmp.ngl","fcmp.lt","fcmp.nge",
"fcmp.le","fcmp.ngt"
};
static char *fmt_name[16] = {
"s", "d", "e", "fmt3",
"w", "fmt5", "fmt6", "fmt7",
"fmt8", "fmt9", "fmta", "fmtb",
"fmtc", "fmtd", "fmte", "fmtf"
};
static char *reg_name[32] = {
"zero", "at", "v0", "v1", "a0", "a1", "a2", "a3",
"t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7",
"s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7",
"t8", "t9", "k0", "k1", "gp", "sp", "s8", "ra"
};
static char *c0_opname[64] = {
"c0op00","tlbr", "tlbwi", "c0op03","c0op04","c0op05","tlbwr", "c0op07",
"tlbp", "c0op11","c0op12","c0op13","c0op14","c0op15","c0op16","c0op17",
"rfe", "c0op21","c0op22","c0op23","c0op24","c0op25","c0op26","c0op27",
"eret","c0op31","c0op32","c0op33","c0op34","c0op35","c0op36","c0op37",
"c0op40","c0op41","c0op42","c0op43","c0op44","c0op45","c0op46","c0op47",
"c0op50","c0op51","c0op52","c0op53","c0op54","c0op55","c0op56","c0op57",
"c0op60","c0op61","c0op62","c0op63","c0op64","c0op65","c0op66","c0op67",
"c0op70","c0op71","c0op72","c0op73","c0op74","c0op75","c0op77","c0op77",
};
static char *c0_reg[32] = {
"index","random","tlblo0","tlblo1","context","tlbmask","wired","c0r7",
"badvaddr","count","tlbhi","c0r11","sr","cause","epc", "prid",
"config","lladr","watchlo","watchhi","xcontext","c0r21","c0r22","c0r23",
"c0r24","c0r25","ecc","cacheerr","taglo","taghi","errepc","c0r31"
};
static int md_printins(int ins, int mdbdot);
db_addr_t
db_disasm(db_addr_t loc, boolean_t altfmt)
{
int ins;
if (vtophys((vm_offset_t)loc)) {
db_read_bytes((vm_offset_t)loc, (size_t)sizeof(int),
(char *)&ins);
md_printins(ins, loc);
}
return (loc + sizeof(int));
}
/* ARGSUSED */
static int
md_printins(int ins, int mdbdot)
{
InstFmt i;
int delay = 0;
i.word = ins;
switch (i.JType.op) {
case OP_SPECIAL:
if (i.word == 0) {
db_printf("nop");
break;
}
if (i.RType.func == OP_ADDU && i.RType.rt == 0) {
db_printf("move\t%s,%s",
reg_name[i.RType.rd], reg_name[i.RType.rs]);
break;
}
db_printf("%s", spec_name[i.RType.func]);
switch (i.RType.func) {
case OP_SLL:
case OP_SRL:
case OP_SRA:
case OP_DSLL:
case OP_DSRL:
case OP_DSRA:
case OP_DSLL32:
case OP_DSRL32:
case OP_DSRA32:
db_printf("\t%s,%s,%d", reg_name[i.RType.rd],
reg_name[i.RType.rt], i.RType.shamt);
break;
case OP_SLLV:
case OP_SRLV:
case OP_SRAV:
case OP_DSLLV:
case OP_DSRLV:
case OP_DSRAV:
db_printf("\t%s,%s,%s", reg_name[i.RType.rd],
reg_name[i.RType.rt], reg_name[i.RType.rs]);
break;
case OP_MFHI:
case OP_MFLO:
db_printf("\t%s", reg_name[i.RType.rd]);
break;
case OP_JR:
case OP_JALR:
delay = 1;
/* FALLTHROUGH */
case OP_MTLO:
case OP_MTHI:
db_printf("\t%s", reg_name[i.RType.rs]);
break;
case OP_MULT:
case OP_MULTU:
case OP_DMULT:
case OP_DMULTU:
case OP_DIV:
case OP_DIVU:
case OP_DDIV:
case OP_DDIVU:
db_printf("\t%s,%s",
reg_name[i.RType.rs], reg_name[i.RType.rt]);
break;
case OP_SYSCALL:
case OP_SYNC:
break;
case OP_BREAK:
db_printf("\t%d", (i.RType.rs << 5) | i.RType.rt);
break;
default:
db_printf("\t%s,%s,%s", reg_name[i.RType.rd],
reg_name[i.RType.rs], reg_name[i.RType.rt]);
};
break;
case OP_BCOND:
db_printf("%s\t%s,", bcond_name[i.IType.rt],
reg_name[i.IType.rs]);
goto pr_displ;
case OP_BLEZ:
case OP_BLEZL:
case OP_BGTZ:
case OP_BGTZL:
db_printf("%s\t%s,", op_name[i.IType.op],
reg_name[i.IType.rs]);
goto pr_displ;
case OP_BEQ:
case OP_BEQL:
if (i.IType.rs == 0 && i.IType.rt == 0) {
db_printf("b\t");
goto pr_displ;
}
/* FALLTHROUGH */
case OP_BNE:
case OP_BNEL:
db_printf("%s\t%s,%s,", op_name[i.IType.op],
reg_name[i.IType.rs], reg_name[i.IType.rt]);
pr_displ:
delay = 1;
db_printf("0x%08x", mdbdot + 4 + ((short)i.IType.imm << 2));
break;
case OP_COP0:
switch (i.RType.rs) {
case OP_BCx:
case OP_BCy:
db_printf("bc0%c\t",
"ft"[i.RType.rt & COPz_BC_TF_MASK]);
goto pr_displ;
case OP_MT:
db_printf("mtc0\t%s,%s",
reg_name[i.RType.rt], c0_reg[i.RType.rd]);
break;
case OP_DMT:
db_printf("dmtc0\t%s,%s",
reg_name[i.RType.rt], c0_reg[i.RType.rd]);
break;
case OP_MF:
db_printf("mfc0\t%s,%s",
reg_name[i.RType.rt], c0_reg[i.RType.rd]);
break;
case OP_DMF:
db_printf("dmfc0\t%s,%s",
reg_name[i.RType.rt], c0_reg[i.RType.rd]);
break;
default:
db_printf("%s", c0_opname[i.FRType.func]);
};
break;
case OP_COP1:
switch (i.RType.rs) {
case OP_BCx:
case OP_BCy:
db_printf("bc1%c\t",
"ft"[i.RType.rt & COPz_BC_TF_MASK]);
goto pr_displ;
case OP_MT:
db_printf("mtc1\t%s,f%d",
reg_name[i.RType.rt], i.RType.rd);
break;
case OP_MF:
db_printf("mfc1\t%s,f%d",
reg_name[i.RType.rt], i.RType.rd);
break;
case OP_CT:
db_printf("ctc1\t%s,f%d",
reg_name[i.RType.rt], i.RType.rd);
break;
case OP_CF:
db_printf("cfc1\t%s,f%d",
reg_name[i.RType.rt], i.RType.rd);
break;
default:
db_printf("%s.%s\tf%d,f%d,f%d",
cop1_name[i.FRType.func], fmt_name[i.FRType.fmt],
i.FRType.fd, i.FRType.fs, i.FRType.ft);
};
break;
case OP_J:
case OP_JAL:
db_printf("%s\t", op_name[i.JType.op]);
db_printf("0x%8x",(mdbdot & 0xF0000000) | (i.JType.target << 2));
delay = 1;
break;
case OP_LWC1:
case OP_SWC1:
db_printf("%s\tf%d,", op_name[i.IType.op], i.IType.rt);
goto loadstore;
case OP_LB:
case OP_LH:
case OP_LW:
case OP_LD:
case OP_LBU:
case OP_LHU:
case OP_LWU:
case OP_SB:
case OP_SH:
case OP_SW:
case OP_SD:
db_printf("%s\t%s,", op_name[i.IType.op],
reg_name[i.IType.rt]);
loadstore:
db_printf("%d(%s)", (short)i.IType.imm, reg_name[i.IType.rs]);
break;
case OP_ORI:
case OP_XORI:
if (i.IType.rs == 0) {
db_printf("li\t%s,0x%x",
reg_name[i.IType.rt], i.IType.imm);
break;
}
/* FALLTHROUGH */
case OP_ANDI:
db_printf("%s\t%s,%s,0x%x", op_name[i.IType.op],
reg_name[i.IType.rt], reg_name[i.IType.rs], i.IType.imm);
break;
case OP_LUI:
db_printf("%s\t%s,0x%x", op_name[i.IType.op],
reg_name[i.IType.rt], i.IType.imm);
break;
case OP_ADDI:
case OP_DADDI:
case OP_ADDIU:
case OP_DADDIU:
if (i.IType.rs == 0) {
db_printf("li\t%s,%d", reg_name[i.IType.rt],
(short)i.IType.imm);
break;
}
/* FALLTHROUGH */
default:
db_printf("%s\t%s,%s,%d", op_name[i.IType.op],
reg_name[i.IType.rt], reg_name[i.IType.rs],
(short)i.IType.imm);
}
return (delay);
}
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