1 /* $OpenBSD: db_disasm.c,v 1.1 1998/03/16 09:03:24 pefo Exp $ */
3 * Copyright (c) 1991, 1993
4 * The Regents of the University of California. All rights reserved.
6 * This code is derived from software contributed to Berkeley by
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed by the University of
20 * California, Berkeley and its contributors.
21 * 4. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * from: @(#)kadb.c 8.1 (Berkeley) 6/10/93
38 * Id: db_disasm.c,v 1.1 1998/03/16 09:03:24 pefo Exp
39 * JNPR: db_disasm.c,v 1.1 2006/08/07 05:38:57 katta
42 #include <sys/cdefs.h>
43 __FBSDID("$FreeBSD$");
45 #include <sys/param.h>
46 #include <vm/vm_param.h>
49 #include <sys/systm.h>
51 #include <machine/mips_opcode.h>
52 #include <machine/db_machdep.h>
54 #include <ddb/db_output.h>
56 static char *op_name[64] = {
57 /* 0 */ "spec", "bcond","j", "jal", "beq", "bne", "blez", "bgtz",
58 /* 8 */ "addi", "addiu","slti", "sltiu","andi", "ori", "xori", "lui",
59 /*16 */ "cop0", "cop1", "cop2", "cop3", "beql", "bnel", "blezl","bgtzl",
60 /*24 */ "daddi","daddiu","ldl", "ldr", "op34", "op35", "op36", "op37",
61 /*32 */ "lb", "lh", "lwl", "lw", "lbu", "lhu", "lwr", "lwu",
62 /*40 */ "sb", "sh", "swl", "sw", "sdl", "sdr", "swr", "cache",
63 /*48 */ "ll", "lwc1", "lwc2", "lwc3", "lld", "ldc1", "ldc2", "ld",
64 /*56 */ "sc", "swc1", "swc2", "swc3", "scd", "sdc1", "sdc2", "sd"
67 static char *spec_name[64] = {
68 /* 0 */ "sll", "spec01","srl", "sra", "sllv", "spec05","srlv","srav",
69 /* 8 */ "jr", "jalr", "spec12","spec13","syscall","break","spec16","sync",
70 /*16 */ "mfhi", "mthi", "mflo", "mtlo", "dsllv","spec25","dsrlv","dsrav",
71 /*24 */ "mult", "multu","div", "divu", "dmult","dmultu","ddiv","ddivu",
72 /*32 */ "add", "addu", "sub", "subu", "and", "or", "xor", "nor",
73 /*40 */ "spec50","spec51","slt","sltu", "dadd","daddu","dsub","dsubu",
74 /*48 */ "tge","tgeu","tlt","tltu","teq","spec65","tne","spec67",
75 /*56 */ "dsll","spec71","dsrl","dsra","dsll32","spec75","dsrl32","dsra32"
78 static char *bcond_name[32] = {
79 /* 0 */ "bltz", "bgez", "bltzl", "bgezl", "?", "?", "?", "?",
80 /* 8 */ "tgei", "tgeiu", "tlti", "tltiu", "teqi", "?", "tnei", "?",
81 /*16 */ "bltzal", "bgezal", "bltzall", "bgezall", "?", "?", "?", "?",
82 /*24 */ "?", "?", "?", "?", "?", "?", "?", "?",
85 static char *cop1_name[64] = {
86 /* 0 */ "fadd", "fsub", "fmpy", "fdiv", "fsqrt","fabs", "fmov", "fneg",
87 /* 8 */ "fop08","fop09","fop0a","fop0b","fop0c","fop0d","fop0e","fop0f",
88 /*16 */ "fop10","fop11","fop12","fop13","fop14","fop15","fop16","fop17",
89 /*24 */ "fop18","fop19","fop1a","fop1b","fop1c","fop1d","fop1e","fop1f",
90 /*32 */ "fcvts","fcvtd","fcvte","fop23","fcvtw","fop25","fop26","fop27",
91 /*40 */ "fop28","fop29","fop2a","fop2b","fop2c","fop2d","fop2e","fop2f",
92 /*48 */ "fcmp.f","fcmp.un","fcmp.eq","fcmp.ueq","fcmp.olt","fcmp.ult",
93 "fcmp.ole","fcmp.ule",
94 /*56 */ "fcmp.sf","fcmp.ngle","fcmp.seq","fcmp.ngl","fcmp.lt","fcmp.nge",
98 static char *fmt_name[16] = {
99 "s", "d", "e", "fmt3",
100 "w", "fmt5", "fmt6", "fmt7",
101 "fmt8", "fmt9", "fmta", "fmtb",
102 "fmtc", "fmtd", "fmte", "fmtf"
105 static char *reg_name[32] = {
106 "zero", "at", "v0", "v1", "a0", "a1", "a2", "a3",
107 "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7",
108 "s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7",
109 "t8", "t9", "k0", "k1", "gp", "sp", "s8", "ra"
112 static char *c0_opname[64] = {
113 "c0op00","tlbr", "tlbwi", "c0op03","c0op04","c0op05","tlbwr", "c0op07",
114 "tlbp", "c0op11","c0op12","c0op13","c0op14","c0op15","c0op16","c0op17",
115 "rfe", "c0op21","c0op22","c0op23","c0op24","c0op25","c0op26","c0op27",
116 "eret","c0op31","c0op32","c0op33","c0op34","c0op35","c0op36","c0op37",
117 "c0op40","c0op41","c0op42","c0op43","c0op44","c0op45","c0op46","c0op47",
118 "c0op50","c0op51","c0op52","c0op53","c0op54","c0op55","c0op56","c0op57",
119 "c0op60","c0op61","c0op62","c0op63","c0op64","c0op65","c0op66","c0op67",
120 "c0op70","c0op71","c0op72","c0op73","c0op74","c0op75","c0op77","c0op77",
123 static char *c0_reg[32] = {
124 "index","random","tlblo0","tlblo1","context","tlbmask","wired","c0r7",
125 "badvaddr","count","tlbhi","c0r11","sr","cause","epc", "prid",
126 "config","lladr","watchlo","watchhi","xcontext","c0r21","c0r22","c0r23",
127 "c0r24","c0r25","ecc","cacheerr","taglo","taghi","errepc","c0r31"
130 static int md_printins(int ins, int mdbdot);
133 db_disasm(db_addr_t loc, boolean_t altfmt)
138 if (vtophys((vm_offset_t)loc)) {
139 db_read_bytes((vm_offset_t)loc, (size_t)sizeof(int),
141 md_printins(ins, loc);
144 return (loc + sizeof(int));
149 md_printins(int ins, int mdbdot)
156 switch (i.JType.op) {
162 if (i.RType.func == OP_ADDU && i.RType.rt == 0) {
163 db_printf("move\t%s,%s",
164 reg_name[i.RType.rd], reg_name[i.RType.rs]);
167 db_printf("%s", spec_name[i.RType.func]);
168 switch (i.RType.func) {
178 db_printf("\t%s,%s,%d", reg_name[i.RType.rd],
179 reg_name[i.RType.rt], i.RType.shamt);
188 db_printf("\t%s,%s,%s", reg_name[i.RType.rd],
189 reg_name[i.RType.rt], reg_name[i.RType.rs]);
194 db_printf("\t%s", reg_name[i.RType.rd]);
203 db_printf("\t%s", reg_name[i.RType.rs]);
215 reg_name[i.RType.rs], reg_name[i.RType.rt]);
223 db_printf("\t%d", (i.RType.rs << 5) | i.RType.rt);
227 db_printf("\t%s,%s,%s", reg_name[i.RType.rd],
228 reg_name[i.RType.rs], reg_name[i.RType.rt]);
233 db_printf("%s\t%s,", bcond_name[i.IType.rt],
234 reg_name[i.IType.rs]);
241 db_printf("%s\t%s,", op_name[i.IType.op],
242 reg_name[i.IType.rs]);
247 if (i.IType.rs == 0 && i.IType.rt == 0) {
254 db_printf("%s\t%s,%s,", op_name[i.IType.op],
255 reg_name[i.IType.rs], reg_name[i.IType.rt]);
258 db_printf("0x%08x", mdbdot + 4 + ((short)i.IType.imm << 2));
262 switch (i.RType.rs) {
266 "ft"[i.RType.rt & COPz_BC_TF_MASK]);
270 db_printf("mtc0\t%s,%s",
271 reg_name[i.RType.rt], c0_reg[i.RType.rd]);
275 db_printf("dmtc0\t%s,%s",
276 reg_name[i.RType.rt], c0_reg[i.RType.rd]);
280 db_printf("mfc0\t%s,%s",
281 reg_name[i.RType.rt], c0_reg[i.RType.rd]);
285 db_printf("dmfc0\t%s,%s",
286 reg_name[i.RType.rt], c0_reg[i.RType.rd]);
290 db_printf("%s", c0_opname[i.FRType.func]);
295 switch (i.RType.rs) {
299 "ft"[i.RType.rt & COPz_BC_TF_MASK]);
303 db_printf("mtc1\t%s,f%d",
304 reg_name[i.RType.rt], i.RType.rd);
308 db_printf("mfc1\t%s,f%d",
309 reg_name[i.RType.rt], i.RType.rd);
313 db_printf("ctc1\t%s,f%d",
314 reg_name[i.RType.rt], i.RType.rd);
318 db_printf("cfc1\t%s,f%d",
319 reg_name[i.RType.rt], i.RType.rd);
323 db_printf("%s.%s\tf%d,f%d,f%d",
324 cop1_name[i.FRType.func], fmt_name[i.FRType.fmt],
325 i.FRType.fd, i.FRType.fs, i.FRType.ft);
331 db_printf("%s\t", op_name[i.JType.op]);
332 db_printf("0x%8x",(mdbdot & 0xF0000000) | (i.JType.target << 2));
338 db_printf("%s\tf%d,", op_name[i.IType.op], i.IType.rt);
352 db_printf("%s\t%s,", op_name[i.IType.op],
353 reg_name[i.IType.rt]);
355 db_printf("%d(%s)", (short)i.IType.imm, reg_name[i.IType.rs]);
360 if (i.IType.rs == 0) {
361 db_printf("li\t%s,0x%x",
362 reg_name[i.IType.rt], i.IType.imm);
367 db_printf("%s\t%s,%s,0x%x", op_name[i.IType.op],
368 reg_name[i.IType.rt], reg_name[i.IType.rs], i.IType.imm);
372 db_printf("%s\t%s,0x%x", op_name[i.IType.op],
373 reg_name[i.IType.rt], i.IType.imm);
380 if (i.IType.rs == 0) {
381 db_printf("li\t%s,%d", reg_name[i.IType.rt],
387 db_printf("%s\t%s,%s,%d", op_name[i.IType.op],
388 reg_name[i.IType.rt], reg_name[i.IType.rs],