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Newsgroups: comp.unix.bsd
Path: sserve!manuel.anu.edu.au!munnari.oz.au!spool.mu.edu!news.cs.indiana.edu!umn.edu!csus.edu!netcom.com!jtk
From: jtk@netcom.com (Jane Valencia)
Subject: [386BSD] crash 2/2
Message-ID: <1992Oct10.211407.4973@netcom.com>
Organization: Netcom - Online Communication Services (408 241-9760 guest)
Date: Sat, 10 Oct 1992 21:14:07 GMT
Lines: 1668
# This is a shell archive. Save it in a file, remove anything before
# this line, and then unpack it by entering "sh file". Note, it may
# create directories; files and directories will be owned by you and
# have default permissions.
#
# This archive contains:
#
# disasm.c
# dump.c
#
echo x - disasm.c
sed 's/^X//' >disasm.c << 'END-of-disasm.c'
X/*
X * Derived from:
X * Mach Operating System
X * Copyright (c) 1991,1990 Carnegie Mellon University
X * All Rights Reserved.
X */
X#include <unistd.h>
X
Xextern char *nameval();
X
X#define TRUE 1 /* DUH */
X#define FALSE 0
X
X/*
X * Size attributes
X */
X#define BYTE 0
X#define WORD 1
X#define LONG 2
X#define QUAD 3
X#define SNGL 4
X#define DBLR 5
X#define EXTR 6
X#define SDEP 7
X#define NONE 8
X
X/*
X * Addressing modes
X */
X#define E 1 /* general effective address */
X#define Eind 2 /* indirect address (jump, call) */
X#define Ew 3 /* address, word size */
X#define Eb 4 /* address, byte size */
X#define R 5 /* register, in 'reg' field */
X#define Rw 6 /* word register, in 'reg' field */
X#define Ri 7 /* register in instruction */
X#define S 8 /* segment reg, in 'reg' field */
X#define Si 9 /* segment reg, in instruction */
X#define A 10 /* accumulator */
X#define BX 11 /* (bx) */
X#define CL 12 /* cl, for shifts */
X#define DX 13 /* dx, for IO */
X#define SI 14 /* si */
X#define DI 15 /* di */
X#define CR 16 /* control register */
X#define DR 17 /* debug register */
X#define TR 18 /* test register */
X#define I 19 /* immediate, unsigned */
X#define Is 20 /* immediate, signed */
X#define Ib 21 /* byte immediate, unsigned */
X#define Ibs 22 /* byte immediate, signed */
X#define Iw 23 /* word immediate, unsigned */
X#define Il 24 /* long immediate */
X#define O 25 /* direct address */
X#define Db 26 /* byte displacement from EIP */
X#define Dl 27 /* long displacement from EIP */
X#define o1 28 /* constant 1 */
X#define o3 29 /* constant 3 */
X#define OS 30 /* immediate offset/segment */
X#define ST 31 /* FP stack top */
X#define STI 32 /* FP stack */
X#define X 33 /* extended FP op */
X#define XA 34 /* for 'fstcw %ax' */
X
Xstruct inst {
X char * i_name; /* name */
X short i_has_modrm; /* has regmodrm byte */
X short i_size; /* operand size */
X int i_mode; /* addressing modes */
X char * i_extra; /* pointer to extra opcode table */
X};
X
X#define op1(x) (x)
X#define op2(x,y) ((x)|((y)<<8))
X#define op3(x,y,z) ((x)|((y)<<8)|((z)<<16))
X
Xstruct finst {
X char * f_name; /* name for memory instruction */
X int f_size; /* size for memory instruction */
X int f_rrmode; /* mode for rr instruction */
X char * f_rrname; /* name for rr instruction
X (or pointer to table) */
X};
X
Xchar * db_Grp6[] = {
X "sldt",
X "str",
X "lldt",
X "ltr",
X "verr",
X "verw",
X "",
X ""
X};
X
Xchar * db_Grp7[] = {
X "sgdt",
X "sidt",
X "lgdt",
X "lidt",
X "smsw",
X "",
X "lmsw",
X "invlpg"
X};
X
Xchar * db_Grp8[] = {
X "",
X "",
X "",
X "",
X "bt",
X "bts",
X "btr",
X "btc"
X};
X
Xstruct inst db_inst_0f0x[] = {
X/*00*/ { "", TRUE, NONE, op1(Ew), (char *)db_Grp6 },
X/*01*/ { "", TRUE, NONE, op1(Ew), (char *)db_Grp7 },
X/*02*/ { "lar", TRUE, LONG, op2(E,R), 0 },
X/*03*/ { "lsl", TRUE, LONG, op2(E,R), 0 },
X/*04*/ { "", FALSE, NONE, 0, 0 },
X/*05*/ { "", FALSE, NONE, 0, 0 },
X/*06*/ { "clts", FALSE, NONE, 0, 0 },
X/*07*/ { "", FALSE, NONE, 0, 0 },
X
X/*08*/ { "invd", FALSE, NONE, 0, 0 },
X/*09*/ { "wbinvd",FALSE, NONE, 0, 0 },
X/*0a*/ { "", FALSE, NONE, 0, 0 },
X/*0b*/ { "", FALSE, NONE, 0, 0 },
X/*0c*/ { "", FALSE, NONE, 0, 0 },
X/*0d*/ { "", FALSE, NONE, 0, 0 },
X/*0e*/ { "", FALSE, NONE, 0, 0 },
X/*0f*/ { "", FALSE, NONE, 0, 0 },
X};
X
Xstruct inst db_inst_0f2x[] = {
X/*20*/ { "mov", TRUE, LONG, op2(CR,E), 0 }, /* use E for reg */
X/*21*/ { "mov", TRUE, LONG, op2(DR,E), 0 }, /* since mod == 11 */
X/*22*/ { "mov", TRUE, LONG, op2(E,CR), 0 },
X/*23*/ { "mov", TRUE, LONG, op2(E,DR), 0 },
X/*24*/ { "mov", TRUE, LONG, op2(TR,E), 0 },
X/*25*/ { "", FALSE, NONE, 0, 0 },
X/*26*/ { "mov", TRUE, LONG, op2(E,TR), 0 },
X/*27*/ { "", FALSE, NONE, 0, 0 },
X
X/*28*/ { "", FALSE, NONE, 0, 0 },
X/*29*/ { "", FALSE, NONE, 0, 0 },
X/*2a*/ { "", FALSE, NONE, 0, 0 },
X/*2b*/ { "", FALSE, NONE, 0, 0 },
X/*2c*/ { "", FALSE, NONE, 0, 0 },
X/*2d*/ { "", FALSE, NONE, 0, 0 },
X/*2e*/ { "", FALSE, NONE, 0, 0 },
X/*2f*/ { "", FALSE, NONE, 0, 0 },
X};
X
Xstruct inst db_inst_0f8x[] = {
X/*80*/ { "jo", FALSE, NONE, op1(Dl), 0 },
X/*81*/ { "jno", FALSE, NONE, op1(Dl), 0 },
X/*82*/ { "jb", FALSE, NONE, op1(Dl), 0 },
X/*83*/ { "jnb", FALSE, NONE, op1(Dl), 0 },
X/*84*/ { "jz", FALSE, NONE, op1(Dl), 0 },
X/*85*/ { "jnz", FALSE, NONE, op1(Dl), 0 },
X/*86*/ { "jbe", FALSE, NONE, op1(Dl), 0 },
X/*87*/ { "jnbe", FALSE, NONE, op1(Dl), 0 },
X
X/*88*/ { "js", FALSE, NONE, op1(Dl), 0 },
X/*89*/ { "jns", FALSE, NONE, op1(Dl), 0 },
X/*8a*/ { "jp", FALSE, NONE, op1(Dl), 0 },
X/*8b*/ { "jnp", FALSE, NONE, op1(Dl), 0 },
X/*8c*/ { "jl", FALSE, NONE, op1(Dl), 0 },
X/*8d*/ { "jnl", FALSE, NONE, op1(Dl), 0 },
X/*8e*/ { "jle", FALSE, NONE, op1(Dl), 0 },
X/*8f*/ { "jnle", FALSE, NONE, op1(Dl), 0 },
X};
X
Xstruct inst db_inst_0f9x[] = {
X/*90*/ { "seto", TRUE, NONE, op1(Eb), 0 },
X/*91*/ { "setno", TRUE, NONE, op1(Eb), 0 },
X/*92*/ { "setb", TRUE, NONE, op1(Eb), 0 },
X/*93*/ { "setnb", TRUE, NONE, op1(Eb), 0 },
X/*94*/ { "setz", TRUE, NONE, op1(Eb), 0 },
X/*95*/ { "setnz", TRUE, NONE, op1(Eb), 0 },
X/*96*/ { "setbe", TRUE, NONE, op1(Eb), 0 },
X/*97*/ { "setnbe",TRUE, NONE, op1(Eb), 0 },
X
X/*98*/ { "sets", TRUE, NONE, op1(Eb), 0 },
X/*99*/ { "setns", TRUE, NONE, op1(Eb), 0 },
X/*9a*/ { "setp", TRUE, NONE, op1(Eb), 0 },
X/*9b*/ { "setnp", TRUE, NONE, op1(Eb), 0 },
X/*9c*/ { "setl", TRUE, NONE, op1(Eb), 0 },
X/*9d*/ { "setnl", TRUE, NONE, op1(Eb), 0 },
X/*9e*/ { "setle", TRUE, NONE, op1(Eb), 0 },
X/*9f*/ { "setnle",TRUE, NONE, op1(Eb), 0 },
X};
X
Xstruct inst db_inst_0fax[] = {
X/*a0*/ { "push", FALSE, NONE, op1(Si), 0 },
X/*a1*/ { "pop", FALSE, NONE, op1(Si), 0 },
X/*a2*/ { "", FALSE, NONE, 0, 0 },
X/*a3*/ { "bt", TRUE, LONG, op2(E,R), 0 },
X/*a4*/ { "shld", TRUE, LONG, op3(Ib,E,R), 0 },
X/*a5*/ { "shld", TRUE, LONG, op3(CL,E,R), 0 },
X/*a6*/ { "", FALSE, NONE, 0, 0 },
X/*a7*/ { "", FALSE, NONE, 0, 0 },
X
X/*a8*/ { "push", FALSE, NONE, op1(Si), 0 },
X/*a9*/ { "pop", FALSE, NONE, op1(Si), 0 },
X/*aa*/ { "", FALSE, NONE, 0, 0 },
X/*ab*/ { "bts", TRUE, LONG, op2(E,R), 0 },
X/*ac*/ { "shrd", TRUE, LONG, op3(Ib,E,R), 0 },
X/*ad*/ { "shrd", TRUE, LONG, op3(CL,E,R), 0 },
X/*a6*/ { "", FALSE, NONE, 0, 0 },
X/*a7*/ { "imul", TRUE, LONG, op2(E,R), 0 },
X};
X
Xstruct inst db_inst_0fbx[] = {
X/*b0*/ { "", FALSE, NONE, 0, 0 },
X/*b1*/ { "", FALSE, NONE, 0, 0 },
X/*b2*/ { "lss", TRUE, LONG, op2(E, R), 0 },
X/*b3*/ { "bts", TRUE, LONG, op2(R, E), 0 },
X/*b4*/ { "lfs", TRUE, LONG, op2(E, R), 0 },
X/*b5*/ { "lgs", TRUE, LONG, op2(E, R), 0 },
X/*b6*/ { "movzb", TRUE, LONG, op2(E, R), 0 },
X/*b7*/ { "movzw", TRUE, LONG, op2(E, R), 0 },
X
X/*b8*/ { "", FALSE, NONE, 0, 0 },
X/*b9*/ { "", FALSE, NONE, 0, 0 },
X/*ba*/ { "", TRUE, LONG, op2(Is, E), (char *)db_Grp8 },
X/*bb*/ { "btc", TRUE, LONG, op2(R, E), 0 },
X/*bc*/ { "bsf", TRUE, LONG, op2(E, R), 0 },
X/*bd*/ { "bsr", TRUE, LONG, op2(E, R), 0 },
X/*be*/ { "movsb", TRUE, LONG, op2(E, R), 0 },
X/*bf*/ { "movsw", TRUE, LONG, op2(E, R), 0 },
X};
X
Xstruct inst db_inst_0fcx[] = {
X/*c0*/ { "xadd", TRUE, BYTE, op2(R, E), 0 },
X/*c1*/ { "xadd", TRUE, LONG, op2(R, E), 0 },
X/*c2*/ { "", FALSE, NONE, 0, 0 },
X/*c3*/ { "", FALSE, NONE, 0, 0 },
X/*c4*/ { "", FALSE, NONE, 0, 0 },
X/*c5*/ { "", FALSE, NONE, 0, 0 },
X/*c6*/ { "", FALSE, NONE, 0, 0 },
X/*c7*/ { "", FALSE, NONE, 0, 0 },
X/*c8*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
X/*c9*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
X/*ca*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
X/*cb*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
X/*cc*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
X/*cd*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
X/*ce*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
X/*cf*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
X};
X
Xstruct inst db_inst_0fdx[] = {
X/*c0*/ { "cmpxchg",TRUE, BYTE, op2(R, E), 0 },
X/*c1*/ { "cmpxchg",TRUE, LONG, op2(R, E), 0 },
X/*c2*/ { "", FALSE, NONE, 0, 0 },
X/*c3*/ { "", FALSE, NONE, 0, 0 },
X/*c4*/ { "", FALSE, NONE, 0, 0 },
X/*c5*/ { "", FALSE, NONE, 0, 0 },
X/*c6*/ { "", FALSE, NONE, 0, 0 },
X/*c7*/ { "", FALSE, NONE, 0, 0 },
X/*c8*/ { "", FALSE, NONE, 0, 0 },
X/*c9*/ { "", FALSE, NONE, 0, 0 },
X/*ca*/ { "", FALSE, NONE, 0, 0 },
X/*cb*/ { "", FALSE, NONE, 0, 0 },
X/*cc*/ { "", FALSE, NONE, 0, 0 },
X/*cd*/ { "", FALSE, NONE, 0, 0 },
X/*ce*/ { "", FALSE, NONE, 0, 0 },
X/*cf*/ { "", FALSE, NONE, 0, 0 },
X};
X
Xstruct inst *db_inst_0f[] = {
X db_inst_0f0x,
X 0,
X db_inst_0f2x,
X 0,
X 0,
X 0,
X 0,
X 0,
X db_inst_0f8x,
X db_inst_0f9x,
X db_inst_0fax,
X db_inst_0fbx,
X db_inst_0fcx,
X db_inst_0fdx,
X 0,
X 0
X};
X
Xchar * db_Esc92[] = {
X "fnop", "", "", "", "", "", "", ""
X};
Xchar * db_Esc93[] = {
X "", "", "", "", "", "", "", ""
X};
Xchar * db_Esc94[] = {
X "fchs", "fabs", "", "", "ftst", "fxam", "", ""
X};
Xchar * db_Esc95[] = {
X "fld1", "fldl2t","fldl2e","fldpi","fldlg2","fldln2","fldz",""
X};
Xchar * db_Esc96[] = {
X "f2xm1","fyl2x","fptan","fpatan","fxtract","fprem1","fdecstp",
X "fincstp"
X};
Xchar * db_Esc97[] = {
X "fprem","fyl2xp1","fsqrt","fsincos","frndint","fscale","fsin","fcos"
X};
X
Xchar * db_Esca4[] = {
X "", "fucompp","", "", "", "", "", ""
X};
X
Xchar * db_Escb4[] = {
X "", "", "fnclex","fninit","", "", "", ""
X};
X
Xchar * db_Esce3[] = {
X "", "fcompp","", "", "", "", "", ""
X};
X
Xchar * db_Escf4[] = {
X "fnstsw","", "", "", "", "", "", ""
X};
X
Xstruct finst db_Esc8[] = {
X/*0*/ { "fadd", SNGL, op2(STI,ST), 0 },
X/*1*/ { "fmul", SNGL, op2(STI,ST), 0 },
X/*2*/ { "fcom", SNGL, op2(STI,ST), 0 },
X/*3*/ { "fcomp", SNGL, op2(STI,ST), 0 },
X/*4*/ { "fsub", SNGL, op2(STI,ST), 0 },
X/*5*/ { "fsubr", SNGL, op2(STI,ST), 0 },
X/*6*/ { "fdiv", SNGL, op2(STI,ST), 0 },
X/*7*/ { "fdivr", SNGL, op2(STI,ST), 0 },
X};
X
Xstruct finst db_Esc9[] = {
X/*0*/ { "fld", SNGL, op1(STI), 0 },
X/*1*/ { "", NONE, op1(STI), "fxch" },
X/*2*/ { "fst", SNGL, op1(X), (char *)db_Esc92 },
X/*3*/ { "fstp", SNGL, op1(X), (char *)db_Esc93 },
X/*4*/ { "fldenv", NONE, op1(X), (char *)db_Esc94 },
X/*5*/ { "fldcw", NONE, op1(X), (char *)db_Esc95 },
X/*6*/ { "fnstenv",NONE, op1(X), (char *)db_Esc96 },
X/*7*/ { "fnstcw", NONE, op1(X), (char *)db_Esc97 },
X};
X
Xstruct finst db_Esca[] = {
X/*0*/ { "fiadd", WORD, 0, 0 },
X/*1*/ { "fimul", WORD, 0, 0 },
X/*2*/ { "ficom", WORD, 0, 0 },
X/*3*/ { "ficomp", WORD, 0, 0 },
X/*4*/ { "fisub", WORD, op1(X), (char *)db_Esca4 },
X/*5*/ { "fisubr", WORD, 0, 0 },
X/*6*/ { "fidiv", WORD, 0, 0 },
X/*7*/ { "fidivr", WORD, 0, 0 }
X};
X
Xstruct finst db_Escb[] = {
X/*0*/ { "fild", WORD, 0, 0 },
X/*1*/ { "", NONE, 0, 0 },
X/*2*/ { "fist", WORD, 0, 0 },
X/*3*/ { "fistp", WORD, 0, 0 },
X/*4*/ { "", WORD, op1(X), (char *)db_Escb4 },
X/*5*/ { "fld", EXTR, 0, 0 },
X/*6*/ { "", WORD, 0, 0 },
X/*7*/ { "fstp", EXTR, 0, 0 },
X};
X
Xstruct finst db_Escc[] = {
X/*0*/ { "fadd", DBLR, op2(ST,STI), 0 },
X/*1*/ { "fmul", DBLR, op2(ST,STI), 0 },
X/*2*/ { "fcom", DBLR, op2(ST,STI), 0 },
X/*3*/ { "fcomp", DBLR, op2(ST,STI), 0 },
X/*4*/ { "fsub", DBLR, op2(ST,STI), "fsubr" },
X/*5*/ { "fsubr", DBLR, op2(ST,STI), "fsub" },
X/*6*/ { "fdiv", DBLR, op2(ST,STI), "fdivr" },
X/*7*/ { "fdivr", DBLR, op2(ST,STI), "fdiv" },
X};
X
Xstruct finst db_Escd[] = {
X/*0*/ { "fld", DBLR, op1(STI), "ffree" },
X/*1*/ { "", NONE, 0, 0 },
X/*2*/ { "fst", DBLR, op1(STI), 0 },
X/*3*/ { "fstp", DBLR, op1(STI), 0 },
X/*4*/ { "frstor", NONE, op1(STI), "fucom" },
X/*5*/ { "", NONE, op1(STI), "fucomp" },
X/*6*/ { "fnsave", NONE, 0, 0 },
X/*7*/ { "fnstsw", NONE, 0, 0 },
X};
X
Xstruct finst db_Esce[] = {
X/*0*/ { "fiadd", LONG, op2(ST,STI), "faddp" },
X/*1*/ { "fimul", LONG, op2(ST,STI), "fmulp" },
X/*2*/ { "ficom", LONG, 0, 0 },
X/*3*/ { "ficomp", LONG, op1(X), (char *)db_Esce3 },
X/*4*/ { "fisub", LONG, op2(ST,STI), "fsubrp" },
X/*5*/ { "fisubr", LONG, op2(ST,STI), "fsubp" },
X/*6*/ { "fidiv", LONG, op2(ST,STI), "fdivrp" },
X/*7*/ { "fidivr", LONG, op2(ST,STI), "fdivp" },
X};
X
Xstruct finst db_Escf[] = {
X/*0*/ { "fild", LONG, 0, 0 },
X/*1*/ { "", LONG, 0, 0 },
X/*2*/ { "fist", LONG, 0, 0 },
X/*3*/ { "fistp", LONG, 0, 0 },
X/*4*/ { "fbld", NONE, op1(XA), (char *)db_Escf4 },
X/*5*/ { "fld", QUAD, 0, 0 },
X/*6*/ { "fbstp", NONE, 0, 0 },
X/*7*/ { "fstp", QUAD, 0, 0 },
X};
X
Xstruct finst *db_Esc_inst[] = {
X db_Esc8, db_Esc9, db_Esca, db_Escb,
X db_Escc, db_Escd, db_Esce, db_Escf
X};
X
Xchar * db_Grp1[] = {
X "add",
X "or",
X "adc",
X "sbb",
X "and",
X "sub",
X "xor",
X "cmp"
X};
X
Xchar * db_Grp2[] = {
X "rol",
X "ror",
X "rcl",
X "rcr",
X "shl",
X "shr",
X "shl",
X "sar"
X};
X
Xstruct inst db_Grp3[] = {
X { "test", TRUE, NONE, op2(I,E), 0 },
X { "test", TRUE, NONE, op2(I,E), 0 },
X { "not", TRUE, NONE, op1(E), 0 },
X { "neg", TRUE, NONE, op1(E), 0 },
X { "mul", TRUE, NONE, op2(E,A), 0 },
X { "imul", TRUE, NONE, op2(E,A), 0 },
X { "div", TRUE, NONE, op2(E,A), 0 },
X { "idiv", TRUE, NONE, op2(E,A), 0 },
X};
X
Xstruct inst db_Grp4[] = {
X { "inc", TRUE, BYTE, op1(E), 0 },
X { "dec", TRUE, BYTE, op1(E), 0 },
X { "", TRUE, NONE, 0, 0 },
X { "", TRUE, NONE, 0, 0 },
X { "", TRUE, NONE, 0, 0 },
X { "", TRUE, NONE, 0, 0 },
X { "", TRUE, NONE, 0, 0 },
X { "", TRUE, NONE, 0, 0 }
X};
X
Xstruct inst db_Grp5[] = {
X { "inc", TRUE, LONG, op1(E), 0 },
X { "dec", TRUE, LONG, op1(E), 0 },
X { "call", TRUE, NONE, op1(Eind),0 },
X { "lcall", TRUE, NONE, op1(Eind),0 },
X { "jmp", TRUE, NONE, op1(Eind),0 },
X { "ljmp", TRUE, NONE, op1(Eind),0 },
X { "push", TRUE, LONG, op1(E), 0 },
X { "", TRUE, NONE, 0, 0 }
X};
X
Xstruct inst db_inst_table[256] = {
X/*00*/ { "add", TRUE, BYTE, op2(R, E), 0 },
X/*01*/ { "add", TRUE, LONG, op2(R, E), 0 },
X/*02*/ { "add", TRUE, BYTE, op2(E, R), 0 },
X/*03*/ { "add", TRUE, LONG, op2(E, R), 0 },
X/*04*/ { "add", FALSE, BYTE, op2(Is, A), 0 },
X/*05*/ { "add", FALSE, LONG, op2(Is, A), 0 },
X/*06*/ { "push", FALSE, NONE, op1(Si), 0 },
X/*07*/ { "pop", FALSE, NONE, op1(Si), 0 },
X
X/*08*/ { "or", TRUE, BYTE, op2(R, E), 0 },
X/*09*/ { "or", TRUE, LONG, op2(R, E), 0 },
X/*0a*/ { "or", TRUE, BYTE, op2(E, R), 0 },
X/*0b*/ { "or", TRUE, LONG, op2(E, R), 0 },
X/*0c*/ { "or", FALSE, BYTE, op2(I, A), 0 },
X/*0d*/ { "or", FALSE, LONG, op2(I, A), 0 },
X/*0e*/ { "push", FALSE, NONE, op1(Si), 0 },
X/*0f*/ { "", FALSE, NONE, 0, 0 },
X
X/*10*/ { "adc", TRUE, BYTE, op2(R, E), 0 },
X/*11*/ { "adc", TRUE, LONG, op2(R, E), 0 },
X/*12*/ { "adc", TRUE, BYTE, op2(E, R), 0 },
X/*13*/ { "adc", TRUE, LONG, op2(E, R), 0 },
X/*14*/ { "adc", FALSE, BYTE, op2(Is, A), 0 },
X/*15*/ { "adc", FALSE, LONG, op2(Is, A), 0 },
X/*16*/ { "push", FALSE, NONE, op1(Si), 0 },
X/*17*/ { "pop", FALSE, NONE, op1(Si), 0 },
X
X/*18*/ { "sbb", TRUE, BYTE, op2(R, E), 0 },
X/*19*/ { "sbb", TRUE, LONG, op2(R, E), 0 },
X/*1a*/ { "sbb", TRUE, BYTE, op2(E, R), 0 },
X/*1b*/ { "sbb", TRUE, LONG, op2(E, R), 0 },
X/*1c*/ { "sbb", FALSE, BYTE, op2(Is, A), 0 },
X/*1d*/ { "sbb", FALSE, LONG, op2(Is, A), 0 },
X/*1e*/ { "push", FALSE, NONE, op1(Si), 0 },
X/*1f*/ { "pop", FALSE, NONE, op1(Si), 0 },
X
X/*20*/ { "and", TRUE, BYTE, op2(R, E), 0 },
X/*21*/ { "and", TRUE, LONG, op2(R, E), 0 },
X/*22*/ { "and", TRUE, BYTE, op2(E, R), 0 },
X/*23*/ { "and", TRUE, LONG, op2(E, R), 0 },
X/*24*/ { "and", FALSE, BYTE, op2(I, A), 0 },
X/*25*/ { "and", FALSE, LONG, op2(I, A), 0 },
X/*26*/ { "", FALSE, NONE, 0, 0 },
X/*27*/ { "aaa", FALSE, NONE, 0, 0 },
X
X/*28*/ { "sub", TRUE, BYTE, op2(R, E), 0 },
X/*29*/ { "sub", TRUE, LONG, op2(R, E), 0 },
X/*2a*/ { "sub", TRUE, BYTE, op2(E, R), 0 },
X/*2b*/ { "sub", TRUE, LONG, op2(E, R), 0 },
X/*2c*/ { "sub", FALSE, BYTE, op2(Is, A), 0 },
X/*2d*/ { "sub", FALSE, LONG, op2(Is, A), 0 },
X/*2e*/ { "", FALSE, NONE, 0, 0 },
X/*2f*/ { "das", FALSE, NONE, 0, 0 },
X
X/*30*/ { "xor", TRUE, BYTE, op2(R, E), 0 },
X/*31*/ { "xor", TRUE, LONG, op2(R, E), 0 },
X/*32*/ { "xor", TRUE, BYTE, op2(E, R), 0 },
X/*33*/ { "xor", TRUE, LONG, op2(E, R), 0 },
X/*34*/ { "xor", FALSE, BYTE, op2(I, A), 0 },
X/*35*/ { "xor", FALSE, LONG, op2(I, A), 0 },
X/*36*/ { "", FALSE, NONE, 0, 0 },
X/*37*/ { "daa", FALSE, NONE, 0, 0 },
X
X/*38*/ { "cmp", TRUE, BYTE, op2(R, E), 0 },
X/*39*/ { "cmp", TRUE, LONG, op2(R, E), 0 },
X/*3a*/ { "cmp", TRUE, BYTE, op2(E, R), 0 },
X/*3b*/ { "cmp", TRUE, LONG, op2(E, R), 0 },
X/*3c*/ { "cmp", FALSE, BYTE, op2(Is, A), 0 },
X/*3d*/ { "cmp", FALSE, LONG, op2(Is, A), 0 },
X/*3e*/ { "", FALSE, NONE, 0, 0 },
X/*3f*/ { "aas", FALSE, NONE, 0, 0 },
X
X/*40*/ { "inc", FALSE, LONG, op1(Ri), 0 },
X/*41*/ { "inc", FALSE, LONG, op1(Ri), 0 },
X/*42*/ { "inc", FALSE, LONG, op1(Ri), 0 },
X/*43*/ { "inc", FALSE, LONG, op1(Ri), 0 },
X/*44*/ { "inc", FALSE, LONG, op1(Ri), 0 },
X/*45*/ { "inc", FALSE, LONG, op1(Ri), 0 },
X/*46*/ { "inc", FALSE, LONG, op1(Ri), 0 },
X/*47*/ { "inc", FALSE, LONG, op1(Ri), 0 },
X
X/*48*/ { "dec", FALSE, LONG, op1(Ri), 0 },
X/*49*/ { "dec", FALSE, LONG, op1(Ri), 0 },
X/*4a*/ { "dec", FALSE, LONG, op1(Ri), 0 },
X/*4b*/ { "dec", FALSE, LONG, op1(Ri), 0 },
X/*4c*/ { "dec", FALSE, LONG, op1(Ri), 0 },
X/*4d*/ { "dec", FALSE, LONG, op1(Ri), 0 },
X/*4e*/ { "dec", FALSE, LONG, op1(Ri), 0 },
X/*4f*/ { "dec", FALSE, LONG, op1(Ri), 0 },
X
X/*50*/ { "push", FALSE, LONG, op1(Ri), 0 },
X/*51*/ { "push", FALSE, LONG, op1(Ri), 0 },
X/*52*/ { "push", FALSE, LONG, op1(Ri), 0 },
X/*53*/ { "push", FALSE, LONG, op1(Ri), 0 },
X/*54*/ { "push", FALSE, LONG, op1(Ri), 0 },
X/*55*/ { "push", FALSE, LONG, op1(Ri), 0 },
X/*56*/ { "push", FALSE, LONG, op1(Ri), 0 },
X/*57*/ { "push", FALSE, LONG, op1(Ri), 0 },
X
X/*58*/ { "pop", FALSE, LONG, op1(Ri), 0 },
X/*59*/ { "pop", FALSE, LONG, op1(Ri), 0 },
X/*5a*/ { "pop", FALSE, LONG, op1(Ri), 0 },
X/*5b*/ { "pop", FALSE, LONG, op1(Ri), 0 },
X/*5c*/ { "pop", FALSE, LONG, op1(Ri), 0 },
X/*5d*/ { "pop", FALSE, LONG, op1(Ri), 0 },
X/*5e*/ { "pop", FALSE, LONG, op1(Ri), 0 },
X/*5f*/ { "pop", FALSE, LONG, op1(Ri), 0 },
X
X/*60*/ { "pusha", FALSE, LONG, 0, 0 },
X/*61*/ { "popa", FALSE, LONG, 0, 0 },
X/*62*/ { "bound", TRUE, LONG, op2(E, R), 0 },
X/*63*/ { "arpl", TRUE, NONE, op2(Ew,Rw), 0 },
X
X/*64*/ { "", FALSE, NONE, 0, 0 },
X/*65*/ { "", FALSE, NONE, 0, 0 },
X/*66*/ { "", FALSE, NONE, 0, 0 },
X/*67*/ { "", FALSE, NONE, 0, 0 },
X
X/*68*/ { "push", FALSE, LONG, op1(I), 0 },
X/*69*/ { "imul", TRUE, LONG, op3(I,E,R), 0 },
X/*6a*/ { "push", FALSE, LONG, op1(Ib), 0 },
X/*6b*/ { "imul", TRUE, LONG, op3(Ibs,E,R),0 },
X/*6c*/ { "ins", FALSE, BYTE, op2(DX, DI), 0 },
X/*6d*/ { "ins", FALSE, LONG, op2(DX, DI), 0 },
X/*6e*/ { "outs", FALSE, BYTE, op2(SI, DX), 0 },
X/*6f*/ { "outs", FALSE, LONG, op2(SI, DX), 0 },
X
X/*70*/ { "jo", FALSE, NONE, op1(Db), 0 },
X/*71*/ { "jno", FALSE, NONE, op1(Db), 0 },
X/*72*/ { "jb", FALSE, NONE, op1(Db), 0 },
X/*73*/ { "jnb", FALSE, NONE, op1(Db), 0 },
X/*74*/ { "jz", FALSE, NONE, op1(Db), 0 },
X/*75*/ { "jnz", FALSE, NONE, op1(Db), 0 },
X/*76*/ { "jbe", FALSE, NONE, op1(Db), 0 },
X/*77*/ { "jnbe", FALSE, NONE, op1(Db), 0 },
X
X/*78*/ { "js", FALSE, NONE, op1(Db), 0 },
X/*79*/ { "jns", FALSE, NONE, op1(Db), 0 },
X/*7a*/ { "jp", FALSE, NONE, op1(Db), 0 },
X/*7b*/ { "jnp", FALSE, NONE, op1(Db), 0 },
X/*7c*/ { "jl", FALSE, NONE, op1(Db), 0 },
X/*7d*/ { "jnl", FALSE, NONE, op1(Db), 0 },
X/*7e*/ { "jle", FALSE, NONE, op1(Db), 0 },
X/*7f*/ { "jnle", FALSE, NONE, op1(Db), 0 },
X
X/*80*/ { "", TRUE, BYTE, op2(I, E), (char *)db_Grp1 },
X/*81*/ { "", TRUE, LONG, op2(I, E), (char *)db_Grp1 },
X/*82*/ { "", TRUE, BYTE, op2(Is,E), (char *)db_Grp1 },
X/*83*/ { "", TRUE, LONG, op2(Ibs,E), (char *)db_Grp1 },
X/*84*/ { "test", TRUE, BYTE, op2(R, E), 0 },
X/*85*/ { "test", TRUE, LONG, op2(R, E), 0 },
X/*86*/ { "xchg", TRUE, BYTE, op2(R, E), 0 },
X/*87*/ { "xchg", TRUE, LONG, op2(R, E), 0 },
X
X/*88*/ { "mov", TRUE, BYTE, op2(R, E), 0 },
X/*89*/ { "mov", TRUE, LONG, op2(R, E), 0 },
X/*8a*/ { "mov", TRUE, BYTE, op2(E, R), 0 },
X/*8b*/ { "mov", TRUE, LONG, op2(E, R), 0 },
X/*8c*/ { "mov", TRUE, NONE, op2(S, Ew), 0 },
X/*8d*/ { "lea", TRUE, LONG, op2(E, R), 0 },
X/*8e*/ { "mov", TRUE, NONE, op2(Ew, S), 0 },
X/*8f*/ { "pop", TRUE, LONG, op1(E), 0 },
X
X/*90*/ { "nop", FALSE, NONE, 0, 0 },
X/*91*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
X/*92*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
X/*93*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
X/*94*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
X/*95*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
X/*96*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
X/*97*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
X
X/*98*/ { "cbw", FALSE, SDEP, 0, "cwde" }, /* cbw/cwde */
X/*99*/ { "cwd", FALSE, SDEP, 0, "cdq" }, /* cwd/cdq */
X/*9a*/ { "lcall", FALSE, NONE, op1(OS), 0 },
X/*9b*/ { "wait", FALSE, NONE, 0, 0 },
X/*9c*/ { "pushf", FALSE, LONG, 0, 0 },
X/*9d*/ { "popf", FALSE, LONG, 0, 0 },
X/*9e*/ { "sahf", FALSE, NONE, 0, 0 },
X/*9f*/ { "lahf", FALSE, NONE, 0, 0 },
X
X/*a0*/ { "mov", FALSE, BYTE, op2(O, A), 0 },
X/*a1*/ { "mov", FALSE, LONG, op2(O, A), 0 },
X/*a2*/ { "mov", FALSE, BYTE, op2(A, O), 0 },
X/*a3*/ { "mov", FALSE, LONG, op2(A, O), 0 },
X/*a4*/ { "movs", FALSE, BYTE, op2(SI,DI), 0 },
X/*a5*/ { "movs", FALSE, LONG, op2(SI,DI), 0 },
X/*a6*/ { "cmps", FALSE, BYTE, op2(SI,DI), 0 },
X/*a7*/ { "cmps", FALSE, LONG, op2(SI,DI), 0 },
X
X/*a8*/ { "test", FALSE, BYTE, op2(I, A), 0 },
X/*a9*/ { "test", FALSE, LONG, op2(I, A), 0 },
X/*aa*/ { "stos", FALSE, BYTE, op1(DI), 0 },
X/*ab*/ { "stos", FALSE, LONG, op1(DI), 0 },
X/*ac*/ { "ldos", FALSE, BYTE, op1(SI), 0 },
X/*ad*/ { "ldos", FALSE, LONG, op1(SI), 0 },
X/*ae*/ { "scas", FALSE, BYTE, op1(SI), 0 },
X/*af*/ { "scas", FALSE, LONG, op1(SI), 0 },
X
X/*b0*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
X/*b1*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
X/*b2*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
X/*b3*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
X/*b4*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
X/*b5*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
X/*b6*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
X/*b7*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
X
X/*b8*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
X/*b9*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
X/*ba*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
X/*bb*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
X/*bc*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
X/*bd*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
X/*be*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
X/*bf*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
X
X/*c0*/ { "", TRUE, BYTE, op2(Ib, E), (char *)db_Grp2 },
X/*c1*/ { "", TRUE, LONG, op2(Ib, E), (char *)db_Grp2 },
X/*c2*/ { "ret", FALSE, NONE, op1(Iw), 0 },
X/*c3*/ { "ret", FALSE, NONE, 0, 0 },
X/*c4*/ { "les", TRUE, LONG, op2(E, R), 0 },
X/*c5*/ { "lds", TRUE, LONG, op2(E, R), 0 },
X/*c6*/ { "mov", TRUE, BYTE, op2(I, E), 0 },
X/*c7*/ { "mov", TRUE, LONG, op2(I, E), 0 },
X
X/*c8*/ { "enter", FALSE, NONE, op2(Ib, Iw), 0 },
X/*c9*/ { "leave", FALSE, NONE, 0, 0 },
X/*ca*/ { "lret", FALSE, NONE, op1(Iw), 0 },
X/*cb*/ { "lret", FALSE, NONE, 0, 0 },
X/*cc*/ { "int", FALSE, NONE, op1(o3), 0 },
X/*cd*/ { "int", FALSE, NONE, op1(Ib), 0 },
X/*ce*/ { "into", FALSE, NONE, 0, 0 },
X/*cf*/ { "iret", FALSE, NONE, 0, 0 },
X
X/*d0*/ { "", TRUE, BYTE, op2(o1, E), (char *)db_Grp2 },
X/*d1*/ { "", TRUE, LONG, op2(o1, E), (char *)db_Grp2 },
X/*d2*/ { "", TRUE, BYTE, op2(CL, E), (char *)db_Grp2 },
X/*d3*/ { "", TRUE, LONG, op2(CL, E), (char *)db_Grp2 },
X/*d4*/ { "aam", TRUE, NONE, 0, 0 },
X/*d5*/ { "aad", TRUE, NONE, 0, 0 },
X/*d6*/ { "", FALSE, NONE, 0, 0 },
X/*d7*/ { "xlat", FALSE, BYTE, op1(BX), 0 },
X
X/*d8*/ { "", TRUE, NONE, 0, (char *)db_Esc8 },
X/*d9*/ { "", TRUE, NONE, 0, (char *)db_Esc9 },
X/*da*/ { "", TRUE, NONE, 0, (char *)db_Esca },
X/*db*/ { "", TRUE, NONE, 0, (char *)db_Escb },
X/*dc*/ { "", TRUE, NONE, 0, (char *)db_Escc },
X/*dd*/ { "", TRUE, NONE, 0, (char *)db_Escd },
X/*de*/ { "", TRUE, NONE, 0, (char *)db_Esce },
X/*df*/ { "", TRUE, NONE, 0, (char *)db_Escf },
X
X/*e0*/ { "loopne",FALSE, NONE, op1(Db), 0 },
X/*e1*/ { "loope", FALSE, NONE, op1(Db), 0 },
X/*e2*/ { "loop", FALSE, NONE, op1(Db), 0 },
X/*e3*/ { "jcxz", FALSE, SDEP, op1(Db), "jecxz" },
X/*e4*/ { "in", FALSE, BYTE, op2(Ib, A), 0 },
X/*e5*/ { "in", FALSE, LONG, op2(Ib, A) , 0 },
X/*e6*/ { "out", FALSE, BYTE, op2(A, Ib), 0 },
X/*e7*/ { "out", FALSE, LONG, op2(A, Ib) , 0 },
X
X/*e8*/ { "call", FALSE, NONE, op1(Dl), 0 },
X/*e9*/ { "jmp", FALSE, NONE, op1(Dl), 0 },
X/*ea*/ { "ljmp", FALSE, NONE, op1(OS), 0 },
X/*eb*/ { "jmp", FALSE, NONE, op1(Db), 0 },
X/*ec*/ { "in", FALSE, BYTE, op2(DX, A), 0 },
X/*ed*/ { "in", FALSE, LONG, op2(DX, A) , 0 },
X/*ee*/ { "out", FALSE, BYTE, op2(A, DX), 0 },
X/*ef*/ { "out", FALSE, LONG, op2(A, DX) , 0 },
X
X/*f0*/ { "", FALSE, NONE, 0, 0 },
X/*f1*/ { "", FALSE, NONE, 0, 0 },
X/*f2*/ { "", FALSE, NONE, 0, 0 },
X/*f3*/ { "", FALSE, NONE, 0, 0 },
X/*f4*/ { "hlt", FALSE, NONE, 0, 0 },
X/*f5*/ { "cmc", FALSE, NONE, 0, 0 },
X/*f6*/ { "", TRUE, BYTE, 0, (char *)db_Grp3 },
X/*f7*/ { "", TRUE, LONG, 0, (char *)db_Grp3 },
X
X/*f8*/ { "clc", FALSE, NONE, 0, 0 },
X/*f9*/ { "stc", FALSE, NONE, 0, 0 },
X/*fa*/ { "cli", FALSE, NONE, 0, 0 },
X/*fb*/ { "sti", FALSE, NONE, 0, 0 },
X/*fc*/ { "cld", FALSE, NONE, 0, 0 },
X/*fd*/ { "std", FALSE, NONE, 0, 0 },
X/*fe*/ { "", TRUE, NONE, 0, (char *)db_Grp4 },
X/*ff*/ { "", TRUE, NONE, 0, (char *)db_Grp5 },
X};
X
Xstruct inst db_bad_inst =
X { "???", FALSE, NONE, 0, 0 }
X;
X
X#define f_mod(byte) ((byte)>>6)
X#define f_reg(byte) (((byte)>>3)&0x7)
X#define f_rm(byte) ((byte)&0x7)
X
X#define sib_ss(byte) ((byte)>>6)
X#define sib_index(byte) (((byte)>>3)&0x7)
X#define sib_base(byte) ((byte)&0x7)
X
Xstruct i_addr {
X int is_reg; /* if reg, reg number is in 'disp' */
X int disp;
X char * base;
X char * index;
X int ss;
X};
X
Xchar * db_index_reg_16[8] = {
X "%bx,%si",
X "%bx,%di",
X "%bp,%si",
X "%bp,%di",
X "%si",
X "%di",
X "%bp",
X "%bx"
X};
X
Xchar * db_reg[3][8] = {
X "%al", "%cl", "%dl", "%bl", "%ah", "%ch", "%dh", "%bh",
X "%ax", "%cx", "%dx", "%bx", "%sp", "%bp", "%si", "%di",
X "%eax", "%ecx", "%edx", "%ebx", "%esp", "%ebp", "%esi", "%edi"
X};
X
Xchar * db_seg_reg[8] = {
X "%es", "%cs", "%ss", "%ds", "%fs", "%gs", "", ""
X};
X
X/*
X * lengths for size attributes
X */
Xint db_lengths[] = {
X 1, /* BYTE */
X 2, /* WORD */
X 4, /* LONG */
X 8, /* QUAD */
X 4, /* SNGL */
X 8, /* DBLR */
X 10, /* EXTR */
X};
X
X/*
X * Wrapper function to interface to readloc()
X * XXX should allow for physical memory disassembly
X */
Xstatic
Xreadloc2(loc, size)
X int loc, size;
X{
X char a; short b; int c;
X
X switch (size) {
X case 1:
X readloc(loc, &a, 1, 0);
X return(a & 0xFF);
X case 2:
X readloc(loc, &b, 2, 0);
X return(b & 0xFFFF);
X case 4:
X readloc(loc, &c, 4, 0);
X return(c);
X default:
X return(0);
X }
X}
X
X#define get_value_inc(result, loc, size, is_signed) \
X result = readloc2(loc, size); \
X (loc) += (size);
X
X/*
X * Read address at location and return updated location.
X */
Xoff_t
Xdb_read_address(loc, short_addr, regmodrm, addrp)
X off_t loc;
X int short_addr;
X int regmodrm;
X struct i_addr *addrp; /* out */
X{
X int mod, rm, sib, index, ss, disp;
X
X mod = f_mod(regmodrm);
X rm = f_rm(regmodrm);
X
X if (mod == 3) {
X addrp->is_reg = TRUE;
X addrp->disp = rm;
X return (loc);
X }
X addrp->is_reg = FALSE;
X addrp->index = 0;
X
X if (short_addr) {
X addrp->index = 0;
X addrp->ss = 0;
X switch (mod) {
X case 0:
X if (rm == 6) {
X get_value_inc(disp, loc, 2, TRUE);
X addrp->disp = disp;
X addrp->base = 0;
X }
X else {
X addrp->disp = 0;
X addrp->base = db_index_reg_16[rm];
X }
X break;
X case 1:
X get_value_inc(disp, loc, 1, TRUE);
X addrp->disp = disp;
X addrp->base = db_index_reg_16[rm];
X break;
X case 2:
X get_value_inc(disp, loc, 2, TRUE);
X addrp->disp = disp;
X addrp->base = db_index_reg_16[rm];
X break;
X }
X }
X else {
X if (mod != 3 && rm == 4) {
X get_value_inc(sib, loc, 1, FALSE);
X rm = sib_base(sib);
X index = sib_index(sib);
X if (index != 4)
X addrp->index = db_reg[LONG][index];
X addrp->ss = sib_ss(sib);
X }
X
X switch (mod) {
X case 0:
X if (rm == 5) {
X get_value_inc(addrp->disp, loc, 4, FALSE);
X addrp->base = 0;
X }
X else {
X addrp->disp = 0;
X addrp->base = db_reg[LONG][rm];
X }
X break;
X
X case 1:
X get_value_inc(disp, loc, 1, TRUE);
X addrp->disp = disp;
X addrp->base = db_reg[LONG][rm];
X break;
X
X case 2:
X get_value_inc(disp, loc, 4, FALSE);
X addrp->disp = disp;
X addrp->base = db_reg[LONG][rm];
X break;
X }
X }
X return (loc);
X}
X
Xstatic void
Xdb_printsym(off)
X int off;
X{
X char *p;
X
X p = nameval(off);
X if (p)
X printf("%s", p);
X else
X printf("%x", off);
X}
X
Xvoid
Xdb_print_address(seg, size, addrp)
X char * seg;
X int size;
X struct i_addr *addrp;
X{
X char *p;
X
X if (addrp->is_reg) {
X printf("%s", db_reg[size][addrp->disp]);
X return;
X }
X
X if (seg) {
X printf("%s:", seg);
X }
X db_printsym(addrp->disp);
X if (addrp->base != 0 || addrp->index != 0) {
X printf("(");
X if (addrp->base)
X printf("%s", addrp->base);
X if (addrp->index)
X printf(",%s,%d", addrp->index, 1<<addrp->ss);
X printf(")");
X }
X}
X
X/*
X * Disassemble floating-point ("escape") instruction
X * and return updated location.
X */
Xoff_t
Xdb_disasm_esc(loc, inst, short_addr, size, seg)
X off_t loc;
X int inst;
X int short_addr;
X int size;
X char * seg;
X{
X int regmodrm;
X struct finst *fp;
X int mod;
X struct i_addr address;
X char * name;
X
X get_value_inc(regmodrm, loc, 1, FALSE);
X fp = &db_Esc_inst[inst - 0xd8][f_reg(regmodrm)];
X mod = f_mod(regmodrm);
X if (mod != 3) {
X /*
X * Normal address modes.
X */
X loc = db_read_address(loc, short_addr, regmodrm, &address);
X printf(fp->f_name);
X switch(fp->f_size) {
X case SNGL:
X printf("s");
X break;
X case DBLR:
X printf("l");
X break;
X case EXTR:
X printf("t");
X break;
X case WORD:
X printf("s");
X break;
X case LONG:
X printf("l");
X break;
X case QUAD:
X printf("q");
X break;
X default:
X break;
X }
X printf("\t");
X db_print_address(seg, BYTE, &address);
X }
X else {
X /*
X * 'reg-reg' - special formats
X */
X switch (fp->f_rrmode) {
X case op2(ST,STI):
X name = (fp->f_rrname) ? fp->f_rrname : fp->f_name;
X printf("%s\t%%st,%%st(%d)",name,f_rm(regmodrm));
X break;
X case op2(STI,ST):
X name = (fp->f_rrname) ? fp->f_rrname : fp->f_name;
X printf("%s\t%%st(%d),%%st",name, f_rm(regmodrm));
X break;
X case op1(STI):
X name = (fp->f_rrname) ? fp->f_rrname : fp->f_name;
X printf("%s\t%%st(%d)",name, f_rm(regmodrm));
X break;
X case op1(X):
X printf("%s", ((char **)fp->f_rrname)[f_rm(regmodrm)]);
X break;
X case op1(XA):
X printf("%s\t%%ax",
X ((char **)fp->f_rrname)[f_rm(regmodrm)]);
X break;
X default:
X printf("<bad instruction>");
X break;
X }
X }
X
X return (loc);
X}
X
X/*
X * Disassemble instruction at 'loc'. 'altfmt' specifies an
X * (optional) alternate format. Return address of start of
X * next instruction.
X */
Xoff_t
Xdb_disasm(loc, altfmt)
X off_t loc;
X int altfmt;
X{
X int inst;
X int size;
X int short_addr;
X char * seg;
X struct inst * ip;
X char * i_name;
X int i_size;
X int i_mode;
X int regmodrm;
X int first;
X int displ;
X int prefix;
X int imm;
X int imm2;
X int len;
X struct i_addr address;
X
X get_value_inc(inst, loc, 1, FALSE);
X short_addr = FALSE;
X size = LONG;
X seg = 0;
X
X /*
X * Get prefixes
X */
X prefix = TRUE;
X do {
X switch (inst) {
X case 0x66: /* data16 */
X size = WORD;
X break;
X case 0x67:
X short_addr = TRUE;
X break;
X case 0x26:
X seg = "%es";
X break;
X case 0x36:
X seg = "%ss";
X break;
X case 0x2e:
X seg = "%cs";
X break;
X case 0x3e:
X seg = "%ds";
X break;
X case 0x64:
X seg = "%fs";
X break;
X case 0x65:
X seg = "%gs";
X break;
X case 0xf0:
X printf("lock ");
X break;
X case 0xf2:
X printf("repne ");
X break;
X case 0xf3:
X printf("repe "); /* XXX repe VS rep */
X break;
X default:
X prefix = FALSE;
X break;
X }
X if (prefix) {
X get_value_inc(inst, loc, 1, FALSE);
X }
X } while (prefix);
X
X if (inst >= 0xd8 && inst <= 0xdf) {
X loc = db_disasm_esc(loc, inst, short_addr, size, seg);
X printf("\n");
X return (loc);
X }
X
X if (inst == 0x0f) {
X get_value_inc(inst, loc, 1, FALSE);
X ip = db_inst_0f[inst>>4];
X if (ip == 0) {
X ip = &db_bad_inst;
X }
X else {
X ip = &ip[inst&0xf];
X }
X }
X else
X ip = &db_inst_table[inst];
X
X if (ip->i_has_modrm) {
X get_value_inc(regmodrm, loc, 1, FALSE);
X loc = db_read_address(loc, short_addr, regmodrm, &address);
X }
X
X i_name = ip->i_name;
X i_size = ip->i_size;
X i_mode = ip->i_mode;
X
X if (ip->i_extra == (char *)db_Grp1 ||
X ip->i_extra == (char *)db_Grp2 ||
X ip->i_extra == (char *)db_Grp6 ||
X ip->i_extra == (char *)db_Grp7 ||
X ip->i_extra == (char *)db_Grp8) {
X i_name = ((char **)ip->i_extra)[f_reg(regmodrm)];
X }
X else if (ip->i_extra == (char *)db_Grp3) {
X ip = (struct inst *)ip->i_extra;
X ip = &ip[f_reg(regmodrm)];
X i_name = ip->i_name;
X i_mode = ip->i_mode;
X }
X else if (ip->i_extra == (char *)db_Grp4 ||
X ip->i_extra == (char *)db_Grp5) {
X ip = (struct inst *)ip->i_extra;
X ip = &ip[f_reg(regmodrm)];
X i_name = ip->i_name;
X i_mode = ip->i_mode;
X i_size = ip->i_size;
X }
X
X if (i_size == SDEP) {
X if (size == WORD)
X printf(i_name);
X else
X printf(ip->i_extra);
X }
X else {
X printf(i_name);
X if (i_size != NONE) {
X if (i_size == BYTE) {
X printf("b");
X size = BYTE;
X }
X else if (i_size == WORD) {
X printf("w");
X size = WORD;
X }
X else if (size == WORD)
X printf("w");
X else
X printf("l");
X }
X }
X printf("\t");
X for (first = TRUE;
X i_mode != 0;
X i_mode >>= 8, first = FALSE)
X {
X if (!first)
X printf(",");
X
X switch (i_mode & 0xFF) {
X
X case E:
X db_print_address(seg, size, &address);
X break;
X
X case Eind:
X printf("*");
X db_print_address(seg, size, &address);
X break;
X
X case Ew:
X db_print_address(seg, WORD, &address);
X break;
X
X case Eb:
X db_print_address(seg, BYTE, &address);
X break;
X
X case R:
X printf("%s", db_reg[size][f_reg(regmodrm)]);
X break;
X
X case Rw:
X printf("%s", db_reg[WORD][f_reg(regmodrm)]);
X break;
X
X case Ri:
X printf("%s", db_reg[size][f_rm(inst)]);
X break;
X
X case S:
X printf("%s", db_seg_reg[f_reg(regmodrm)]);
X break;
X
X case Si:
X printf("%s", db_seg_reg[f_reg(inst)]);
X break;
X
X case A:
X printf("%s", db_reg[size][0]); /* acc */
X break;
X
X case BX:
X if (seg)
X printf("%s:", seg);
X printf("(%s)", short_addr ? "%bx" : "%ebx");
X break;
X
X case CL:
X printf("%%cl");
X break;
X
X case DX:
X printf("%%dx");
X break;
X
X case SI:
X if (seg)
X printf("%s:", seg);
X printf("(%s)", short_addr ? "%si" : "%esi");
X break;
X
X case DI:
X printf("%%es:(%s)", short_addr ? "%di" : "%edi");
X break;
X
X case CR:
X printf("%%cr%d", f_reg(regmodrm));
X break;
X
X case DR:
X printf("%%dr%d", f_reg(regmodrm));
X break;
X
X case TR:
X printf("%%tr%d", f_reg(regmodrm));
X break;
X
X case I:
X len = db_lengths[size];
X get_value_inc(imm, loc, len, FALSE);/* unsigned */
X printf("$%x", imm);
X break;
X
X case Is:
X len = db_lengths[size];
X get_value_inc(imm, loc, len, TRUE); /* signed */
X printf("$%x", imm);
X break;
X
X case Ib:
X get_value_inc(imm, loc, 1, FALSE); /* unsigned */
X printf("$%x", imm);
X break;
X
X case Ibs:
X get_value_inc(imm, loc, 1, TRUE); /* signed */
X printf("$%x", imm);
X break;
X
X case Iw:
X get_value_inc(imm, loc, 2, FALSE); /* unsigned */
X printf("$%x", imm);
X break;
X
X case Il:
X get_value_inc(imm, loc, 4, FALSE);
X printf("$%x", imm);
X break;
X
X case O:
X if (short_addr) {
X get_value_inc(displ, loc, 2, TRUE);
X }
X else {
X get_value_inc(displ, loc, 4, TRUE);
X }
X if (seg)
X printf("%s:%x",seg, displ);
X else
X db_printsym((off_t)displ);
X break;
X
X case Db:
X get_value_inc(displ, loc, 1, TRUE);
X db_printsym((off_t)(displ + loc));
X break;
X
X case Dl:
X get_value_inc(displ, loc, 4, TRUE);
X db_printsym((off_t)(displ + loc));
X break;
X
X case o1:
X printf("$1");
X break;
X
X case o3:
X printf("$3");
X break;
X
X case OS:
X get_value_inc(imm, loc, 4, FALSE); /* offset */
X get_value_inc(imm2, loc, 2, FALSE); /* segment */
X printf("$%x,%x", imm2, imm);
X break;
X }
X }
X
X if (altfmt == 0) {
X if (inst == 0xe9 || inst == 0xeb) {
X /*
X * GAS pads to longword boundary after unconditional jumps.
X */
X loc = (loc + (4-1)) & ~(4-1);
X }
X }
X printf("\n");
X return (loc);
X}
END-of-disasm.c
echo x - dump.c
sed 's/^X//' >dump.c << 'END-of-dump.c'
X/*
X * dump.c
X * Dump memory in various formats
X */
X#include <unistd.h>
X#include <stdlib.h>
X#include <ctype.h>
X#include <strings.h>
X
Xstatic int dot, /* Last position we examined */
X dcount = 0; /* ... last count */
Xstatic char lastfmt = 0; /* ... last format */
X
X/*
X * get_num()
X * Convert word to value
X *
X * Numbers, numbers with 0x, and numbers with 0 are treated accordingly.
X * Letters are looked up as a symbol in the symbol table.
X */
Xget_num(str)
X char *str;
X{
X char *p;
X char buf[128];
X extern int yyval;
X extern char *expr_line, *expr_pos;
X
X /*
X * Filter garbage
X */
X if (!str || !str[0])
X return(0);
X
X /*
X * Trim at end of line or next blank
X */
X strcpy(buf, str);
X p = strchr(buf, ' ');
X if (p)
X *p = '\0';
X
X /*
X * Set up for parse, and do the parse
X */
X expr_line = expr_pos = buf;
X (void)yyparse();
X return(yyval);
X}
X
X/*
X * dump_s()
X * Dump strings
X */
Xstatic void
Xdump_s(off, count, phys)
X int off, count, phys;
X{
X int x, col = 0;
X char *buf;
X
X buf = malloc(count*sizeof(char));
X if (!buf) {
X perror("malloc");
X return;
X }
X readloc(off, buf, count*sizeof(char), phys);
X for (x = 0; x < count; ++x) {
X printf(" %02x", buf[x] & 0xFF);
X if (++col >= 16) {
X int y;
X char c;
X
X printf(" ");
X for (y = 0; y < 16; ++y) {
X c = buf[x-15+y];
X if ((c < ' ') || (c >= 0x7F))
X c = '.';
X putchar(c);
X }
X printf("\n");
X col = 0;
X }
X }
X if (col) { /* Partial line */
X int y;
X
X for (y = col; y < 16; ++y)
X printf(" ");
X for (y = 0; y < col; ++y) {
X char c;
X
X c = buf[count-col+y];
X if ((c < ' ') || (c >= 0x7F))
X c = '.';
X putchar(c);
X }
X printf("\n");
X }
X free(buf);
X}
X
X/*
X * dump_X()
X * Dump a bunch of hex longwords
X */
Xstatic void
Xdump_X(off, count, phys)
X int off, count, phys;
X{
X int x, col = 0;
X long *buf;
X
X buf = malloc(count*sizeof(long));
X if (!buf) {
X perror("malloc");
X return;
X }
X readloc(off, buf, count*sizeof(long), phys);
X for (x = 0; x < count; ++x) {
X printf(" %08X", buf[x]);
X if (++col >= 8) {
X printf("\n");
X col = 0;
X }
X }
X if (col)
X printf("\n");
X free(buf);
X}
X
X/*
X * do_dump()
X * Central workhorse to do the actual memory examination
X */
Xstatic void
Xdo_dump(phys, args)
X int phys;
X char *args;
X{
X char fmt;
X int count;
X
X /*
X * Use last count, or 1 if no previous count
X */
X if (dcount > 0)
X count = dcount;
X else
X count = 1;
X
X /*
X * Use last format, or 'X' if no previous
X */
X if (lastfmt)
X fmt = lastfmt;
X else
X fmt = 'X';
X
X /*
X * If first arg non-numeric, use as format
X */
X if (args && args[0] && !isdigit(args[0]) && (args[1] == ' ')) {
X fmt = args[0];
X args += 2;
X }
X
X /*
X * Next arg is address, default to dot otherwise
X */
X if (args && args[0]) {
X if ((args[0] == '-') && (args[1] == ' ')) {
X /* Placeholder to specify different count */
X args += 2;
X } else {
X dot = get_num(args);
X args = strchr(args, ' ');
X if (args)
X args += 1;
X }
X }
X
X /*
X * Next arg is count, default is 1
X */
X if (args && args[0]) {
X count = get_num(args);
X }
X dcount = count;
X lastfmt = fmt;
X
X switch (fmt) {
X case 'X':
X dump_X(dot, count, phys);
X dot += count*4;
X break;
X case 's':
X dump_s(dot, count, phys);
X dot += count;
X break;
X default:
X printf("Unknown format: '%c'\n", fmt);
X break;
X }
X}
X
X/*
X * dump_phys()
X * Dump memory given physical address
X */
Xdump_phys(args)
X char *args;
X{
X do_dump(1, args);
X}
X
X/*
X * dump_virt()
X * Dump memory given kernel virtual address
X */
Xdump_virt(args)
X char *args;
X{
X do_dump(0, args);
X}
X
X/*
X * dump_instr()
X * Dump memory, virtual, using instruction format
X */
Xdump_instr(args)
X char *args;
X{
X int count = 10, x;
X
X /*
X * Next argument is address
X */
X if (args && args[0]) {
X dot = get_num(args);
X args = strchr(args, ' ');
X if (args)
X args += 1;
X }
X
X /*
X * Last argument is count
X */
X if (args && args[0]) {
X count = get_num(args);
X }
X
X /*
X * Dump out instructions
X */
X for (x = 0; x < count; ++x) {
X extern char *symloc();
X
X printf("%-15s ", symloc(dot));
X dot = db_disasm(dot, 0);
X }
X}
END-of-dump.c
exit