1962 lines
46 KiB
C
1962 lines
46 KiB
C
#ifdef DISASSEMBLER
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/* Print i386 instructions for GDB, the GNU debugger.
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Copyright (C) 1988, 1989 Free Software Foundation, Inc.
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This file is part of GDB.
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GDB is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 1, or (at your option)
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any later version.
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GDB is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GDB; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* $FreeBSD$ */
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/*
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* 80386 instruction printer by Pace Willisson (pace@prep.ai.mit.edu)
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* July 1988
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*/
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/*
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* The main tables describing the instructions is essentially a copy
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* of the "Opcode Map" chapter (Appendix A) of the Intel 80386
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* Programmers Manual. Usually, there is a capital letter, followed
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* by a small letter. The capital letter tell the addressing mode,
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* and the small letter tells about the operand size. Refer to
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* the Intel manual for details.
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*/
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#include <stdio.h>
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#include <ctype.h>
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#include "doscmd.h"
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static void OP_E(int), OP_indirE(int), OP_G(int);
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static void OP_I(int), OP_sI(int), OP_REG(int), OP_J(int), OP_SEG(int);
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static void OP_DIR(int), OP_OFF(int), OP_DSSI(int), OP_ESDI(int);
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static void OP_C(int), OP_D(int), OP_T(int), OP_rm(int);
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static void OP_ST(int), OP_STi(int);
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static void append_pc(unsigned long);
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static void append_prefix(void);
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static void dofloat(void);
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static int get16(void);
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static int get32(void);
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static void oappend(const char *);
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static void putop(const char *);
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#define Eb OP_E, b_mode
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#define indirEb OP_indirE, b_mode
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#define Gb OP_G, b_mode
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#define Ev OP_E, v_mode
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#define indirEv OP_indirE, v_mode
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#define Ew OP_E, w_mode
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#define Ma OP_E, v_mode
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#define M OP_E, 0
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#define Mp OP_E, 0 /* ? */
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#define Gv OP_G, v_mode
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#define Gw OP_G, w_mode
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#define Rw OP_rm, w_mode
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#define Rd OP_rm, d_mode
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#define Ib OP_I, b_mode
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#define sIb OP_sI, b_mode /* sign extended byte */
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#define Iv OP_I, v_mode
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#define Iw OP_I, w_mode
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#define Jb OP_J, b_mode
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#define Jv OP_J, v_mode
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#define Cd OP_C, d_mode
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#define Dd OP_D, d_mode
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#define Td OP_T, d_mode
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#define eAX OP_REG, eAX_reg
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#define eBX OP_REG, eBX_reg
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#define eCX OP_REG, eCX_reg
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#define eDX OP_REG, eDX_reg
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#define eSP OP_REG, eSP_reg
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#define eBP OP_REG, eBP_reg
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#define eSI OP_REG, eSI_reg
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#define eDI OP_REG, eDI_reg
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#define AL OP_REG, al_reg
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#define CL OP_REG, cl_reg
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#define DL OP_REG, dl_reg
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#define BL OP_REG, bl_reg
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#define AH OP_REG, ah_reg
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#define CH OP_REG, ch_reg
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#define DH OP_REG, dh_reg
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#define BH OP_REG, bh_reg
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#define AX OP_REG, ax_reg
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#define DX OP_REG, dx_reg
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#define indirDX OP_REG, indir_dx_reg
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#define Sw OP_SEG, w_mode
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#define Ap OP_DIR, lptr
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#define Av OP_DIR, v_mode
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#define Ob OP_OFF, b_mode
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#define Ov OP_OFF, v_mode
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#define Xb OP_DSSI, b_mode
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#define Xv OP_DSSI, v_mode
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#define Yb OP_ESDI, b_mode
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#define Yv OP_ESDI, v_mode
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#define es OP_REG, es_reg
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#define ss OP_REG, ss_reg
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#define cs OP_REG, cs_reg
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#define ds OP_REG, ds_reg
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#define fs OP_REG, fs_reg
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#define gs OP_REG, gs_reg
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#define b_mode 1
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#define v_mode 2
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#define w_mode 3
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#define d_mode 4
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#define es_reg 100
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#define cs_reg 101
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#define ss_reg 102
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#define ds_reg 103
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#define fs_reg 104
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#define gs_reg 105
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#define eAX_reg 107
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#define eCX_reg 108
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#define eDX_reg 109
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#define eBX_reg 110
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#define eSP_reg 111
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#define eBP_reg 112
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#define eSI_reg 113
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#define eDI_reg 114
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#define lptr 115
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#define al_reg 116
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#define cl_reg 117
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#define dl_reg 118
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#define bl_reg 119
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#define ah_reg 120
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#define ch_reg 121
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#define dh_reg 122
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#define bh_reg 123
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#define ax_reg 124
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#define cx_reg 125
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#define dx_reg 126
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#define bx_reg 127
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#define sp_reg 128
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#define bp_reg 129
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#define si_reg 130
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#define di_reg 131
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#define indir_dx_reg 150
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#define NOFUNC NULL, 0
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#define GRP1b NULL, NULL, 0, NOFUNC, NOFUNC
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#define GRP1S NULL, NULL, 1, NOFUNC, NOFUNC
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#define GRP1Ss NULL, NULL, 2, NOFUNC, NOFUNC
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#define GRP2b NULL, NULL, 3, NOFUNC, NOFUNC
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#define GRP2S NULL, NULL, 4, NOFUNC, NOFUNC
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#define GRP2b_one NULL, NULL, 5, NOFUNC, NOFUNC
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#define GRP2S_one NULL, NULL, 6, NOFUNC, NOFUNC
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#define GRP2b_cl NULL, NULL, 7, NOFUNC, NOFUNC
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#define GRP2S_cl NULL, NULL, 8, NOFUNC, NOFUNC
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#define GRP3b NULL, NULL, 9, NOFUNC, NOFUNC
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#define GRP3S NULL, NULL, 10, NOFUNC, NOFUNC
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#define GRP4 NULL, NULL, 11, NOFUNC, NOFUNC
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#define GRP5 NULL, NULL, 12, NOFUNC, NOFUNC
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#define GRP6 NULL, NULL, 13, NOFUNC, NOFUNC
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#define GRP7 NULL, NULL, 14, NOFUNC, NOFUNC
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#define GRP8 NULL, NULL, 15, NOFUNC, NOFUNC
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#define FLOATCODE 50
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#define FLOAT NULL, NULL, FLOATCODE, NOFUNC, NOFUNC
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struct dis386 {
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const char *name;
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void (*op1)(int);
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int bytemode1;
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void (*op2)(int);
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int bytemode2;
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void (*op3)(int);
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int bytemode3;
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};
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struct dis386 dis386[] = {
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/* 00 */
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{ "addb", Eb, Gb, NOFUNC },
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{ "addS", Ev, Gv, NOFUNC },
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{ "addb", Gb, Eb, NOFUNC },
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{ "addS", Gv, Ev, NOFUNC },
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{ "addb", AL, Ib, NOFUNC },
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{ "addS", eAX, Iv, NOFUNC },
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{ "pushl", es, NOFUNC, NOFUNC },
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{ "popl", es, NOFUNC, NOFUNC },
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/* 08 */
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{ "orb", Eb, Gb, NOFUNC },
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{ "orS", Ev, Gv, NOFUNC },
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{ "orb", Gb, Eb, NOFUNC },
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{ "orS", Gv, Ev, NOFUNC },
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{ "orb", AL, Ib, NOFUNC },
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{ "orS", eAX, Iv, NOFUNC },
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{ "pushl", cs, NOFUNC, NOFUNC },
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{ "(bad)", NOFUNC, NOFUNC, NOFUNC }, /* extended opcode escape */
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/* 10 */
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{ "adcb", Eb, Gb, NOFUNC },
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{ "adcS", Ev, Gv, NOFUNC },
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{ "adcb", Gb, Eb, NOFUNC },
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{ "adcS", Gv, Ev, NOFUNC },
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{ "adcb", AL, Ib, NOFUNC },
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{ "adcS", eAX, Iv, NOFUNC },
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{ "pushl", ss, NOFUNC, NOFUNC },
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{ "popl", ss, NOFUNC, NOFUNC },
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/* 18 */
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{ "sbbb", Eb, Gb, NOFUNC },
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{ "sbbS", Ev, Gv, NOFUNC },
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{ "sbbb", Gb, Eb, NOFUNC },
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{ "sbbS", Gv, Ev, NOFUNC },
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{ "sbbb", AL, Ib, NOFUNC },
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{ "sbbS", eAX, Iv, NOFUNC },
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{ "pushl", ds, NOFUNC, NOFUNC },
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{ "popl", ds, NOFUNC, NOFUNC },
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/* 20 */
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{ "andb", Eb, Gb, NOFUNC },
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{ "andS", Ev, Gv, NOFUNC },
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{ "andb", Gb, Eb, NOFUNC },
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{ "andS", Gv, Ev, NOFUNC },
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{ "andb", AL, Ib, NOFUNC },
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{ "andS", eAX, Iv, NOFUNC },
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{ "(bad)", NOFUNC, NOFUNC, NOFUNC}, /* SEG ES prefix */
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{ "daa", NOFUNC, NOFUNC, NOFUNC },
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/* 28 */
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{ "subb", Eb, Gb, NOFUNC },
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{ "subS", Ev, Gv, NOFUNC },
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{ "subb", Gb, Eb, NOFUNC },
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{ "subS", Gv, Ev, NOFUNC },
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{ "subb", AL, Ib, NOFUNC },
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{ "subS", eAX, Iv, NOFUNC },
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{ "(bad)", NOFUNC, NOFUNC, NOFUNC }, /* SEG CS prefix */
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{ "das", NOFUNC, NOFUNC, NOFUNC },
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/* 30 */
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{ "xorb", Eb, Gb, NOFUNC },
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{ "xorS", Ev, Gv, NOFUNC },
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{ "xorb", Gb, Eb, NOFUNC },
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{ "xorS", Gv, Ev, NOFUNC },
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{ "xorb", AL, Ib, NOFUNC },
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{ "xorS", eAX, Iv, NOFUNC },
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{ "(bad)", NOFUNC, NOFUNC, NOFUNC }, /* SEG SS prefix */
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{ "aaa", NOFUNC, NOFUNC, NOFUNC },
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/* 38 */
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{ "cmpb", Eb, Gb, NOFUNC },
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{ "cmpS", Ev, Gv, NOFUNC },
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{ "cmpb", Gb, Eb, NOFUNC },
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{ "cmpS", Gv, Ev, NOFUNC },
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{ "cmpb", AL, Ib, NOFUNC },
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{ "cmpS", eAX, Iv, NOFUNC },
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{ "(bad)", NOFUNC, NOFUNC, NOFUNC }, /* SEG DS prefix */
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{ "aas", NOFUNC, NOFUNC, NOFUNC },
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/* 40 */
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{ "incS", eAX, NOFUNC, NOFUNC },
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{ "incS", eCX, NOFUNC, NOFUNC },
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{ "incS", eDX, NOFUNC, NOFUNC },
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{ "incS", eBX, NOFUNC, NOFUNC },
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{ "incS", eSP, NOFUNC, NOFUNC },
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{ "incS", eBP, NOFUNC, NOFUNC },
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{ "incS", eSI, NOFUNC, NOFUNC },
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{ "incS", eDI, NOFUNC, NOFUNC },
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/* 48 */
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{ "decS", eAX, NOFUNC, NOFUNC },
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{ "decS", eCX, NOFUNC, NOFUNC },
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{ "decS", eDX, NOFUNC, NOFUNC },
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{ "decS", eBX, NOFUNC, NOFUNC },
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{ "decS", eSP, NOFUNC, NOFUNC },
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{ "decS", eBP, NOFUNC, NOFUNC },
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{ "decS", eSI, NOFUNC, NOFUNC },
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{ "decS", eDI, NOFUNC, NOFUNC },
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/* 50 */
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{ "pushS", eAX, NOFUNC, NOFUNC },
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{ "pushS", eCX, NOFUNC, NOFUNC },
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{ "pushS", eDX, NOFUNC, NOFUNC },
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{ "pushS", eBX, NOFUNC, NOFUNC },
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{ "pushS", eSP, NOFUNC, NOFUNC },
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{ "pushS", eBP, NOFUNC, NOFUNC },
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{ "pushS", eSI, NOFUNC, NOFUNC },
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{ "pushS", eDI, NOFUNC, NOFUNC },
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/* 58 */
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{ "popS", eAX, NOFUNC, NOFUNC },
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{ "popS", eCX, NOFUNC, NOFUNC },
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{ "popS", eDX, NOFUNC, NOFUNC },
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{ "popS", eBX, NOFUNC, NOFUNC },
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{ "popS", eSP, NOFUNC, NOFUNC },
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{ "popS", eBP, NOFUNC, NOFUNC },
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{ "popS", eSI, NOFUNC, NOFUNC },
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{ "popS", eDI, NOFUNC, NOFUNC },
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/* 60 */
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{ "pusha", NOFUNC, NOFUNC, NOFUNC },
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{ "popa", NOFUNC, NOFUNC, NOFUNC },
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{ "boundS", Gv, Ma, NOFUNC },
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{ "arpl", Ew, Gw, NOFUNC },
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{ "(bad)", NOFUNC, NOFUNC, NOFUNC }, /* seg fs */
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{ "(bad)", NOFUNC, NOFUNC, NOFUNC }, /* seg gs */
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{ "(bad)", NOFUNC, NOFUNC, NOFUNC }, /* op size prefix */
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{ "(bad)", NOFUNC, NOFUNC, NOFUNC }, /* adr size prefix */
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/* 68 */
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{ "pushS", Iv, NOFUNC, NOFUNC }, /* 386 book wrong */
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{ "imulS", Gv, Ev, Iv },
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{ "pushl", sIb, NOFUNC, NOFUNC }, /* push of byte really pushes 4 bytes */
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{ "imulS", Gv, Ev, Ib },
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{ "insb", Yb, indirDX, NOFUNC },
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{ "insS", Yv, indirDX, NOFUNC },
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{ "outsb", indirDX, Xb, NOFUNC },
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{ "outsS", indirDX, Xv, NOFUNC },
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/* 70 */
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{ "jo", Jb, NOFUNC, NOFUNC },
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{ "jno", Jb, NOFUNC, NOFUNC },
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{ "jb", Jb, NOFUNC, NOFUNC },
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{ "jae", Jb, NOFUNC, NOFUNC },
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{ "je", Jb, NOFUNC, NOFUNC },
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{ "jne", Jb, NOFUNC, NOFUNC },
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{ "jbe", Jb, NOFUNC, NOFUNC },
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{ "ja", Jb, NOFUNC, NOFUNC },
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/* 78 */
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{ "js", Jb, NOFUNC, NOFUNC },
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{ "jns", Jb, NOFUNC, NOFUNC },
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{ "jp", Jb, NOFUNC, NOFUNC },
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{ "jnp", Jb, NOFUNC, NOFUNC },
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{ "jl", Jb, NOFUNC, NOFUNC },
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{ "jnl", Jb, NOFUNC, NOFUNC },
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{ "jle", Jb, NOFUNC, NOFUNC },
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{ "jg", Jb, NOFUNC, NOFUNC },
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/* 80 */
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{ GRP1b },
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{ GRP1S },
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{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
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{ GRP1Ss },
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{ "testb", Eb, Gb, NOFUNC },
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{ "testS", Ev, Gv, NOFUNC },
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{ "xchgb", Eb, Gb, NOFUNC },
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{ "xchgS", Ev, Gv, NOFUNC },
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/* 88 */
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{ "movb", Eb, Gb, NOFUNC },
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{ "movS", Ev, Gv, NOFUNC },
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{ "movb", Gb, Eb, NOFUNC },
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{ "movS", Gv, Ev, NOFUNC },
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{ "movw", Ew, Sw, NOFUNC },
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{ "leaS", Gv, M, NOFUNC },
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{ "movw", Sw, Ew, NOFUNC },
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{ "popS", Ev, NOFUNC, NOFUNC },
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/* 90 */
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{ "nop", NOFUNC, NOFUNC, NOFUNC },
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{ "xchgS", eCX, eAX, NOFUNC },
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{ "xchgS", eDX, eAX, NOFUNC },
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{ "xchgS", eBX, eAX, NOFUNC },
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{ "xchgS", eSP, eAX, NOFUNC },
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{ "xchgS", eBP, eAX, NOFUNC },
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{ "xchgS", eSI, eAX, NOFUNC },
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{ "xchgS", eDI, eAX, NOFUNC },
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/* 98 */
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{ "cwtl", NOFUNC, NOFUNC, NOFUNC },
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{ "cltd", NOFUNC, NOFUNC, NOFUNC },
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{ "lcall", Ap, NOFUNC, NOFUNC },
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{ "(bad)", NOFUNC, NOFUNC, NOFUNC }, /* fwait */
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{ "pushf", NOFUNC, NOFUNC, NOFUNC },
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{ "popf", NOFUNC, NOFUNC, NOFUNC },
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{ "sahf", NOFUNC, NOFUNC, NOFUNC },
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{ "lahf", NOFUNC, NOFUNC, NOFUNC },
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/* a0 */
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{ "movb", AL, Ob, NOFUNC },
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{ "movS", eAX, Ov, NOFUNC },
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{ "movb", Ob, AL, NOFUNC },
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{ "movS", Ov, eAX, NOFUNC },
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{ "movsb", Yb, Xb, NOFUNC },
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{ "movsS", Yv, Xv, NOFUNC },
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{ "cmpsb", Xb, Yb, NOFUNC },
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{ "cmpsS", Xv, Yv, NOFUNC },
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/* a8 */
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{ "testb", AL, Ib, NOFUNC },
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{ "testS", eAX, Iv, NOFUNC },
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{ "stosb", Yb, AL, NOFUNC },
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{ "stosS", Yv, eAX, NOFUNC },
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{ "lodsb", AL, Xb, NOFUNC },
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{ "lodsS", eAX, Xv, NOFUNC },
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{ "scasb", AL, Yb, NOFUNC },
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{ "scasS", eAX, Yv, NOFUNC },
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/* b0 */
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{ "movb", AL, Ib, NOFUNC },
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{ "movb", CL, Ib, NOFUNC },
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{ "movb", DL, Ib, NOFUNC },
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{ "movb", BL, Ib, NOFUNC },
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{ "movb", AH, Ib, NOFUNC },
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{ "movb", CH, Ib, NOFUNC },
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{ "movb", DH, Ib, NOFUNC },
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{ "movb", BH, Ib, NOFUNC },
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/* b8 */
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{ "movS", eAX, Iv, NOFUNC },
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{ "movS", eCX, Iv, NOFUNC },
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{ "movS", eDX, Iv, NOFUNC },
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{ "movS", eBX, Iv, NOFUNC },
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{ "movS", eSP, Iv, NOFUNC },
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{ "movS", eBP, Iv, NOFUNC },
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{ "movS", eSI, Iv, NOFUNC },
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{ "movS", eDI, Iv, NOFUNC },
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/* c0 */
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{ GRP2b },
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{ GRP2S },
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{ "ret", Iw, NOFUNC, NOFUNC },
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{ "ret", NOFUNC, NOFUNC, NOFUNC },
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{ "lesS", Gv, Mp, NOFUNC },
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{ "ldsS", Gv, Mp, NOFUNC },
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{ "movb", Eb, Ib, NOFUNC },
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{ "movS", Ev, Iv, NOFUNC },
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/* c8 */
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{ "enter", Iw, Ib, NOFUNC },
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{ "leave", NOFUNC, NOFUNC, NOFUNC },
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{ "lret", Iw, NOFUNC, NOFUNC },
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{ "lret", NOFUNC, NOFUNC, NOFUNC },
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{ "int3", NOFUNC, NOFUNC, NOFUNC },
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{ "int", Ib, NOFUNC, NOFUNC },
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{ "into", NOFUNC, NOFUNC, NOFUNC },
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{ "iret", NOFUNC, NOFUNC, NOFUNC },
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/* d0 */
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{ GRP2b_one },
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{ GRP2S_one },
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{ GRP2b_cl },
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{ GRP2S_cl },
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{ "aam", Ib, NOFUNC, NOFUNC },
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{ "aad", Ib, NOFUNC, NOFUNC },
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{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
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{ "xlat", NOFUNC, NOFUNC, NOFUNC },
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/* d8 */
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{ FLOAT },
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{ FLOAT },
|
|
{ FLOAT },
|
|
{ FLOAT },
|
|
{ FLOAT },
|
|
{ FLOAT },
|
|
{ FLOAT },
|
|
{ FLOAT },
|
|
/* e0 */
|
|
{ "loopne", Jb, NOFUNC, NOFUNC },
|
|
{ "loope", Jb, NOFUNC, NOFUNC },
|
|
{ "loop", Jb, NOFUNC, NOFUNC },
|
|
{ "jCcxz", Jb, NOFUNC, NOFUNC },
|
|
{ "inb", AL, Ib, NOFUNC },
|
|
{ "inS", eAX, Ib, NOFUNC },
|
|
{ "outb", Ib, AL, NOFUNC },
|
|
{ "outS", Ib, eAX, NOFUNC },
|
|
/* e8 */
|
|
{ "call", Av, NOFUNC, NOFUNC },
|
|
{ "jmp", Jv, NOFUNC, NOFUNC },
|
|
{ "ljmp", Ap, NOFUNC, NOFUNC },
|
|
{ "jmp", Jb, NOFUNC, NOFUNC },
|
|
{ "inb", AL, indirDX, NOFUNC },
|
|
{ "inS", eAX, indirDX, NOFUNC },
|
|
{ "outb", indirDX, AL, NOFUNC },
|
|
{ "outS", indirDX, eAX, NOFUNC },
|
|
/* f0 */
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC }, /* lock prefix */
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC }, /* repne */
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC }, /* repz */
|
|
{ "hlt", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "cmc", NOFUNC, NOFUNC, NOFUNC },
|
|
{ GRP3b },
|
|
{ GRP3S },
|
|
/* f8 */
|
|
{ "clc", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "stc", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "cli", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "sti", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "cld", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "std", NOFUNC, NOFUNC, NOFUNC },
|
|
{ GRP4 },
|
|
{ GRP5 },
|
|
};
|
|
|
|
struct dis386 dis386_twobyte[] = {
|
|
/* 00 */
|
|
{ GRP6 },
|
|
{ GRP7 },
|
|
{ "larS", Gv, Ew, NOFUNC },
|
|
{ "lslS", Gv, Ew, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "clts", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
/* 08 */
|
|
{ "invd", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "wbinvd", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
/* 10 */
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
/* 18 */
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
/* 20 */
|
|
/* these are all backward in appendix A of the intel book */
|
|
{ "movl", Rd, Cd, NOFUNC },
|
|
{ "movl", Rd, Dd, NOFUNC },
|
|
{ "movl", Cd, Rd, NOFUNC },
|
|
{ "movl", Dd, Rd, NOFUNC },
|
|
{ "movl", Rd, Td, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "movl", Td, Rd, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
/* 28 */
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
/* 30 */
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
/* 38 */
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
/* 40 */
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
/* 48 */
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
/* 50 */
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
/* 58 */
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
/* 60 */
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
/* 68 */
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
/* 70 */
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
/* 78 */
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
/* 80 */
|
|
{ "jo", Jv, NOFUNC, NOFUNC },
|
|
{ "jno", Jv, NOFUNC, NOFUNC },
|
|
{ "jb", Jv, NOFUNC, NOFUNC },
|
|
{ "jae", Jv, NOFUNC, NOFUNC },
|
|
{ "je", Jv, NOFUNC, NOFUNC },
|
|
{ "jne", Jv, NOFUNC, NOFUNC },
|
|
{ "jbe", Jv, NOFUNC, NOFUNC },
|
|
{ "ja", Jv, NOFUNC, NOFUNC },
|
|
/* 88 */
|
|
{ "js", Jv, NOFUNC, NOFUNC },
|
|
{ "jns", Jv, NOFUNC, NOFUNC },
|
|
{ "jp", Jv, NOFUNC, NOFUNC },
|
|
{ "jnp", Jv, NOFUNC, NOFUNC },
|
|
{ "jl", Jv, NOFUNC, NOFUNC },
|
|
{ "jge", Jv, NOFUNC, NOFUNC },
|
|
{ "jle", Jv, NOFUNC, NOFUNC },
|
|
{ "jg", Jv, NOFUNC, NOFUNC },
|
|
/* 90 */
|
|
{ "seto", Eb, NOFUNC, NOFUNC },
|
|
{ "setno", Eb, NOFUNC, NOFUNC },
|
|
{ "setb", Eb, NOFUNC, NOFUNC },
|
|
{ "setae", Eb, NOFUNC, NOFUNC },
|
|
{ "sete", Eb, NOFUNC, NOFUNC },
|
|
{ "setne", Eb, NOFUNC, NOFUNC },
|
|
{ "setbe", Eb, NOFUNC, NOFUNC },
|
|
{ "seta", Eb, NOFUNC, NOFUNC },
|
|
/* 98 */
|
|
{ "sets", Eb, NOFUNC, NOFUNC },
|
|
{ "setns", Eb, NOFUNC, NOFUNC },
|
|
{ "setp", Eb, NOFUNC, NOFUNC },
|
|
{ "setnp", Eb, NOFUNC, NOFUNC },
|
|
{ "setl", Eb, NOFUNC, NOFUNC },
|
|
{ "setge", Eb, NOFUNC, NOFUNC },
|
|
{ "setle", Eb, NOFUNC, NOFUNC },
|
|
{ "setg", Eb, NOFUNC, NOFUNC },
|
|
/* a0 */
|
|
{ "pushl", fs, NOFUNC, NOFUNC },
|
|
{ "popl", fs, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "btS", Ev, Gv, NOFUNC },
|
|
{ "shldS", Ev, Gv, Ib },
|
|
{ "shldS", Ev, Gv, CL },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
/* a8 */
|
|
{ "pushl", gs, NOFUNC, NOFUNC },
|
|
{ "popl", gs, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "btsS", Ev, Gv, NOFUNC },
|
|
{ "shrdS", Ev, Gv, Ib },
|
|
{ "shrdS", Ev, Gv, CL },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "imulS", Gv, Ev, NOFUNC },
|
|
/* b0 */
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "lssS", Gv, Mp, NOFUNC }, /* 386 lists only Mp */
|
|
{ "btrS", Ev, Gv, NOFUNC },
|
|
{ "lfsS", Gv, Mp, NOFUNC }, /* 386 lists only Mp */
|
|
{ "lgsS", Gv, Mp, NOFUNC }, /* 386 lists only Mp */
|
|
{ "movzbS", Gv, Eb, NOFUNC },
|
|
{ "movzwS", Gv, Ew, NOFUNC },
|
|
/* b8 */
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ GRP8 },
|
|
{ "btcS", Ev, Gv, NOFUNC },
|
|
{ "bsfS", Gv, Ev, NOFUNC },
|
|
{ "bsrS", Gv, Ev, NOFUNC },
|
|
{ "movsbS", Gv, Eb, NOFUNC },
|
|
{ "movswS", Gv, Ew, NOFUNC },
|
|
/* c0 */
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
/* c8 */
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
/* d0 */
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
/* d8 */
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
/* e0 */
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
/* e8 */
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
/* f0 */
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
/* f8 */
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
};
|
|
|
|
static char obuf[100];
|
|
static char *obufp;
|
|
static char scratchbuf[100];
|
|
static unsigned char *start_codep;
|
|
static unsigned char *codep;
|
|
static int mod;
|
|
static int rm;
|
|
static int reg;
|
|
|
|
static const char *names32[]={
|
|
"%eax","%ecx","%edx","%ebx", "%esp","%ebp","%esi","%edi",
|
|
};
|
|
static const char *names16[] = {
|
|
"%ax","%cx","%dx","%bx","%sp","%bp","%si","%di",
|
|
};
|
|
static const char *names8[] = {
|
|
"%al","%cl","%dl","%bl","%ah","%ch","%dh","%bh",
|
|
};
|
|
static const char *names_seg[] = {
|
|
"%es","%cs","%ss","%ds","%fs","%gs","%?","%?",
|
|
};
|
|
static const char *names16_pairs[] = {
|
|
"%bx+%si","%bx+%di","%bp+%si","%bp+%di","%si","%di","%bp","%bx",
|
|
};
|
|
|
|
struct dis386 grps[][8] = {
|
|
/* GRP1b */
|
|
{
|
|
{ "addb", Eb, Ib, NOFUNC },
|
|
{ "orb", Eb, Ib, NOFUNC },
|
|
{ "adcb", Eb, Ib, NOFUNC },
|
|
{ "sbbb", Eb, Ib, NOFUNC },
|
|
{ "andb", Eb, Ib, NOFUNC },
|
|
{ "subb", Eb, Ib, NOFUNC },
|
|
{ "xorb", Eb, Ib, NOFUNC },
|
|
{ "cmpb", Eb, Ib, NOFUNC }
|
|
},
|
|
/* GRP1S */
|
|
{
|
|
{ "addS", Ev, Iv, NOFUNC },
|
|
{ "orS", Ev, Iv, NOFUNC },
|
|
{ "adcS", Ev, Iv, NOFUNC },
|
|
{ "sbbS", Ev, Iv, NOFUNC },
|
|
{ "andS", Ev, Iv, NOFUNC },
|
|
{ "subS", Ev, Iv, NOFUNC },
|
|
{ "xorS", Ev, Iv, NOFUNC },
|
|
{ "cmpS", Ev, Iv, NOFUNC }
|
|
},
|
|
/* GRP1Ss */
|
|
{
|
|
{ "addS", Ev, sIb, NOFUNC },
|
|
{ "orS", Ev, sIb, NOFUNC },
|
|
{ "adcS", Ev, sIb, NOFUNC },
|
|
{ "sbbS", Ev, sIb, NOFUNC },
|
|
{ "andS", Ev, sIb, NOFUNC },
|
|
{ "subS", Ev, sIb, NOFUNC },
|
|
{ "xorS", Ev, sIb, NOFUNC },
|
|
{ "cmpS", Ev, sIb, NOFUNC }
|
|
},
|
|
/* GRP2b */
|
|
{
|
|
{ "rolb", Eb, Ib, NOFUNC },
|
|
{ "rorb", Eb, Ib, NOFUNC },
|
|
{ "rclb", Eb, Ib, NOFUNC },
|
|
{ "rcrb", Eb, Ib, NOFUNC },
|
|
{ "shlb", Eb, Ib, NOFUNC },
|
|
{ "shrb", Eb, Ib, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "sarb", Eb, Ib, NOFUNC },
|
|
},
|
|
/* GRP2S */
|
|
{
|
|
{ "rolS", Ev, Ib, NOFUNC },
|
|
{ "rorS", Ev, Ib, NOFUNC },
|
|
{ "rclS", Ev, Ib, NOFUNC },
|
|
{ "rcrS", Ev, Ib, NOFUNC },
|
|
{ "shlS", Ev, Ib, NOFUNC },
|
|
{ "shrS", Ev, Ib, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "sarS", Ev, Ib, NOFUNC },
|
|
},
|
|
/* GRP2b_one */
|
|
{
|
|
{ "rolb", Eb, NOFUNC, NOFUNC },
|
|
{ "rorb", Eb, NOFUNC, NOFUNC },
|
|
{ "rclb", Eb, NOFUNC, NOFUNC },
|
|
{ "rcrb", Eb, NOFUNC, NOFUNC },
|
|
{ "shlb", Eb, NOFUNC, NOFUNC },
|
|
{ "shrb", Eb, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "sarb", Eb, NOFUNC, NOFUNC },
|
|
},
|
|
/* GRP2S_one */
|
|
{
|
|
{ "rolS", Ev, NOFUNC, NOFUNC },
|
|
{ "rorS", Ev, NOFUNC, NOFUNC },
|
|
{ "rclS", Ev, NOFUNC, NOFUNC },
|
|
{ "rcrS", Ev, NOFUNC, NOFUNC },
|
|
{ "shlS", Ev, NOFUNC, NOFUNC },
|
|
{ "shrS", Ev, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "sarS", Ev, NOFUNC, NOFUNC },
|
|
},
|
|
/* GRP2b_cl */
|
|
{
|
|
{ "rolb", Eb, CL, NOFUNC },
|
|
{ "rorb", Eb, CL, NOFUNC },
|
|
{ "rclb", Eb, CL, NOFUNC },
|
|
{ "rcrb", Eb, CL, NOFUNC },
|
|
{ "shlb", Eb, CL, NOFUNC },
|
|
{ "shrb", Eb, CL, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "sarb", Eb, CL, NOFUNC },
|
|
},
|
|
/* GRP2S_cl */
|
|
{
|
|
{ "rolS", Ev, CL, NOFUNC },
|
|
{ "rorS", Ev, CL, NOFUNC },
|
|
{ "rclS", Ev, CL, NOFUNC },
|
|
{ "rcrS", Ev, CL, NOFUNC },
|
|
{ "shlS", Ev, CL, NOFUNC },
|
|
{ "shrS", Ev, CL, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "sarS", Ev, CL, NOFUNC }
|
|
},
|
|
/* GRP3b */
|
|
{
|
|
{ "testb", Eb, Ib, NOFUNC },
|
|
{ "(bad)", Eb, NOFUNC, NOFUNC },
|
|
{ "notb", Eb, NOFUNC, NOFUNC },
|
|
{ "negb", Eb, NOFUNC, NOFUNC },
|
|
{ "mulb", AL, Eb, NOFUNC },
|
|
{ "imulb", AL, Eb, NOFUNC },
|
|
{ "divb", AL, Eb, NOFUNC },
|
|
{ "idivb", AL, Eb, NOFUNC }
|
|
},
|
|
/* GRP3S */
|
|
{
|
|
{ "testS", Ev, Iv, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "notS", Ev, NOFUNC, NOFUNC },
|
|
{ "negS", Ev, NOFUNC, NOFUNC },
|
|
{ "mulS", eAX, Ev, NOFUNC },
|
|
{ "imulS", eAX, Ev, NOFUNC },
|
|
{ "divS", eAX, Ev, NOFUNC },
|
|
{ "idivS", eAX, Ev, NOFUNC },
|
|
},
|
|
/* GRP4 */
|
|
{
|
|
{ "incb", Eb, NOFUNC, NOFUNC },
|
|
{ "decb", Eb, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
},
|
|
/* GRP5 */
|
|
{
|
|
{ "incS", Ev, NOFUNC, NOFUNC },
|
|
{ "decS", Ev, NOFUNC, NOFUNC },
|
|
{ "call", indirEv, NOFUNC, NOFUNC },
|
|
{ "lcall", indirEv, NOFUNC, NOFUNC },
|
|
{ "jmp", indirEv, NOFUNC, NOFUNC },
|
|
{ "ljmp", indirEv, NOFUNC, NOFUNC },
|
|
{ "pushS", Ev, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
},
|
|
/* GRP6 */
|
|
{
|
|
{ "sldt", Ew, NOFUNC, NOFUNC },
|
|
{ "str", Ew, NOFUNC, NOFUNC },
|
|
{ "lldt", Ew, NOFUNC, NOFUNC },
|
|
{ "ltr", Ew, NOFUNC, NOFUNC },
|
|
{ "verr", Ew, NOFUNC, NOFUNC },
|
|
{ "verw", Ew, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC }
|
|
},
|
|
/* GRP7 */
|
|
{
|
|
{ "sgdt", Ew, NOFUNC, NOFUNC },
|
|
{ "sidt", Ew, NOFUNC, NOFUNC },
|
|
{ "lgdt", Ew, NOFUNC, NOFUNC },
|
|
{ "lidt", Ew, NOFUNC, NOFUNC },
|
|
{ "smsw", Ew, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "lmsw", Ew, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
},
|
|
/* GRP8 */
|
|
{
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "btS", Ev, Ib, NOFUNC },
|
|
{ "btsS", Ev, Ib, NOFUNC },
|
|
{ "btrS", Ev, Ib, NOFUNC },
|
|
{ "btcS", Ev, Ib, NOFUNC },
|
|
}
|
|
};
|
|
|
|
#define PREFIX_REPZ 0x01
|
|
#define PREFIX_REPNZ 0x02
|
|
#define PREFIX_LOCK 0x04
|
|
#define PREFIX_CS 0x08
|
|
#define PREFIX_SS 0x10
|
|
#define PREFIX_DS 0x20
|
|
#define PREFIX_ES 0x40
|
|
#define PREFIX_FS 0x80
|
|
#define PREFIX_GS 0x100
|
|
#define PREFIX_DATA 0x200
|
|
#define PREFIX_ADR 0x400
|
|
#define PREFIX_FWAIT 0x800
|
|
|
|
static int prefixes;
|
|
|
|
static void
|
|
ckprefix(void)
|
|
{
|
|
prefixes = 0;
|
|
while (1)
|
|
{
|
|
switch (*codep)
|
|
{
|
|
case 0xf3:
|
|
prefixes |= PREFIX_REPZ;
|
|
break;
|
|
case 0xf2:
|
|
prefixes |= PREFIX_REPNZ;
|
|
break;
|
|
case 0xf0:
|
|
prefixes |= PREFIX_LOCK;
|
|
break;
|
|
case 0x2e:
|
|
prefixes |= PREFIX_CS;
|
|
break;
|
|
case 0x36:
|
|
prefixes |= PREFIX_SS;
|
|
break;
|
|
case 0x3e:
|
|
prefixes |= PREFIX_DS;
|
|
break;
|
|
case 0x26:
|
|
prefixes |= PREFIX_ES;
|
|
break;
|
|
case 0x64:
|
|
prefixes |= PREFIX_FS;
|
|
break;
|
|
case 0x65:
|
|
prefixes |= PREFIX_GS;
|
|
break;
|
|
case 0x66:
|
|
prefixes |= PREFIX_DATA;
|
|
break;
|
|
case 0x67:
|
|
prefixes |= PREFIX_ADR;
|
|
break;
|
|
case 0x9b:
|
|
prefixes |= PREFIX_FWAIT;
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
codep++;
|
|
}
|
|
}
|
|
|
|
static int dflag;
|
|
static int aflag;
|
|
|
|
static char op1out[100], op2out[100], op3out[100];
|
|
static unsigned long start_pc;
|
|
|
|
/*
|
|
* disassemble the first instruction in 'inbuf'. You have to make
|
|
* sure all of the bytes of the instruction are filled in.
|
|
* On the 386's of 1988, the maximum length of an instruction is 15 bytes.
|
|
* (see topic "Redundant prefixes" in the "Differences from 8086"
|
|
* section of the "Virtual 8086 Mode" chapter.)
|
|
* 'pc' should be the address of this instruction, it will
|
|
* be used to print the target address if this is a relative jump or call
|
|
* 'outbuf' gets filled in with the disassembled instruction. it should
|
|
* be long enough to hold the longest disassembled instruction.
|
|
* 100 bytes is certainly enough, unless symbol printing is added later
|
|
* The function returns the length of this instruction in bytes.
|
|
*/
|
|
int
|
|
i386dis (unsigned short ucs, unsigned short uip, unsigned char *inbuf,
|
|
char *outbuf, int mode)
|
|
{
|
|
struct dis386 *dp;
|
|
int i;
|
|
int enter_instruction;
|
|
char *first, *second, *third;
|
|
int needcomma;
|
|
|
|
obuf[0] = 0;
|
|
op1out[0] = 0;
|
|
op2out[0] = 0;
|
|
op3out[0] = 0;
|
|
|
|
start_pc = ucs << 16 | uip;
|
|
start_codep = inbuf;
|
|
codep = inbuf;
|
|
|
|
ckprefix ();
|
|
|
|
if (*codep == 0xc8)
|
|
enter_instruction = 1;
|
|
else
|
|
enter_instruction = 0;
|
|
|
|
obufp = obuf;
|
|
|
|
if (prefixes & PREFIX_REPZ)
|
|
oappend ("repz ");
|
|
if (prefixes & PREFIX_REPNZ)
|
|
oappend ("repnz ");
|
|
if (prefixes & PREFIX_LOCK)
|
|
oappend ("lock ");
|
|
|
|
if ((prefixes & PREFIX_FWAIT)
|
|
&& ((*codep < 0xd8) || (*codep > 0xdf)))
|
|
{
|
|
/* fwait not followed by floating point instruction */
|
|
oappend ("fwait");
|
|
strcpy (outbuf, obuf);
|
|
return (1);
|
|
}
|
|
|
|
/* these would be initialized to 0 if disassembling for 8086 or 286 */
|
|
if (mode) {
|
|
dflag = 1;
|
|
aflag = 1;
|
|
} else {
|
|
dflag = 0;
|
|
aflag = 0;
|
|
}
|
|
|
|
if (prefixes & PREFIX_DATA)
|
|
dflag ^= 1;
|
|
|
|
if (prefixes & PREFIX_ADR)
|
|
{
|
|
aflag ^= 1;
|
|
oappend ("addr16 ");
|
|
}
|
|
|
|
if (*codep == 0x0f)
|
|
dp = &dis386_twobyte[*++codep];
|
|
else
|
|
dp = &dis386[*codep];
|
|
codep++;
|
|
mod = (*codep >> 6) & 3;
|
|
reg = (*codep >> 3) & 7;
|
|
rm = *codep & 7;
|
|
|
|
if (dp->name == NULL && dp->bytemode1 == FLOATCODE)
|
|
{
|
|
dofloat ();
|
|
}
|
|
else
|
|
{
|
|
if (dp->name == NULL)
|
|
dp = &grps[dp->bytemode1][reg];
|
|
|
|
putop (dp->name);
|
|
|
|
obufp = op1out;
|
|
if (dp->op1)
|
|
(*dp->op1)(dp->bytemode1);
|
|
|
|
obufp = op2out;
|
|
if (dp->op2)
|
|
(*dp->op2)(dp->bytemode2);
|
|
|
|
obufp = op3out;
|
|
if (dp->op3)
|
|
(*dp->op3)(dp->bytemode3);
|
|
}
|
|
|
|
obufp = obuf + strlen (obuf);
|
|
for (i = strlen (obuf); i < 6; i++)
|
|
oappend (" ");
|
|
oappend (" ");
|
|
|
|
/* enter instruction is printed with operands in the
|
|
* same order as the intel book; everything else
|
|
* is printed in reverse order
|
|
*/
|
|
if (enter_instruction)
|
|
{
|
|
first = op1out;
|
|
second = op2out;
|
|
third = op3out;
|
|
}
|
|
else
|
|
{
|
|
first = op3out;
|
|
second = op2out;
|
|
third = op1out;
|
|
}
|
|
needcomma = 0;
|
|
if (*first)
|
|
{
|
|
oappend (first);
|
|
needcomma = 1;
|
|
}
|
|
if (*second)
|
|
{
|
|
if (needcomma)
|
|
oappend (",");
|
|
oappend (second);
|
|
needcomma = 1;
|
|
}
|
|
if (*third)
|
|
{
|
|
if (needcomma)
|
|
oappend (",");
|
|
oappend (third);
|
|
}
|
|
strcpy (outbuf, obuf);
|
|
return (codep - inbuf);
|
|
}
|
|
|
|
const char *float_mem[] = {
|
|
/* d8 */
|
|
"fadds",
|
|
"fmuls",
|
|
"fcoms",
|
|
"fcomps",
|
|
"fsubs",
|
|
"fsubrs",
|
|
"fdivs",
|
|
"fdivrs",
|
|
/* d9 */
|
|
"flds",
|
|
"(bad)",
|
|
"fsts",
|
|
"fstps",
|
|
"fldenv",
|
|
"fldcw",
|
|
"fNstenv",
|
|
"fNstcw",
|
|
/* da */
|
|
"fiaddl",
|
|
"fimull",
|
|
"ficoml",
|
|
"ficompl",
|
|
"fisubl",
|
|
"fisubrl",
|
|
"fidivl",
|
|
"fidivrl",
|
|
/* db */
|
|
"fildl",
|
|
"(bad)",
|
|
"fistl",
|
|
"fistpl",
|
|
"(bad)",
|
|
"fldt",
|
|
"(bad)",
|
|
"fstpt",
|
|
/* dc */
|
|
"faddl",
|
|
"fmull",
|
|
"fcoml",
|
|
"fcompl",
|
|
"fsubl",
|
|
"fsubrl",
|
|
"fdivl",
|
|
"fdivrl",
|
|
/* dd */
|
|
"fldl",
|
|
"(bad)",
|
|
"fstl",
|
|
"fstpl",
|
|
"frstor",
|
|
"(bad)",
|
|
"fNsave",
|
|
"fNstsw",
|
|
/* de */
|
|
"fiadd",
|
|
"fimul",
|
|
"ficom",
|
|
"ficomp",
|
|
"fisub",
|
|
"fisubr",
|
|
"fidiv",
|
|
"fidivr",
|
|
/* df */
|
|
"fild",
|
|
"(bad)",
|
|
"fist",
|
|
"fistp",
|
|
"fbld",
|
|
"fildll",
|
|
"fbstp",
|
|
"fistpll",
|
|
};
|
|
|
|
#define ST OP_ST, 0
|
|
#define STi OP_STi, 0
|
|
|
|
#define FGRPd9_2 NULL, NULL, 0, NOFUNC, NOFUNC
|
|
#define FGRPd9_4 NULL, NULL, 1, NOFUNC, NOFUNC
|
|
#define FGRPd9_5 NULL, NULL, 2, NOFUNC, NOFUNC
|
|
#define FGRPd9_6 NULL, NULL, 3, NOFUNC, NOFUNC
|
|
#define FGRPd9_7 NULL, NULL, 4, NOFUNC, NOFUNC
|
|
#define FGRPda_5 NULL, NULL, 5, NOFUNC, NOFUNC
|
|
#define FGRPdb_4 NULL, NULL, 6, NOFUNC, NOFUNC
|
|
#define FGRPde_3 NULL, NULL, 7, NOFUNC, NOFUNC
|
|
#define FGRPdf_4 NULL, NULL, 8, NOFUNC, NOFUNC
|
|
|
|
struct dis386 float_reg[][8] = {
|
|
/* d8 */
|
|
{
|
|
{ "fadd", ST, STi, NOFUNC },
|
|
{ "fmul", ST, STi, NOFUNC },
|
|
{ "fcom", STi, NOFUNC, NOFUNC },
|
|
{ "fcomp", STi, NOFUNC, NOFUNC },
|
|
{ "fsub", ST, STi, NOFUNC },
|
|
{ "fsubr", ST, STi, NOFUNC },
|
|
{ "fdiv", ST, STi, NOFUNC },
|
|
{ "fdivr", ST, STi, NOFUNC },
|
|
},
|
|
/* d9 */
|
|
{
|
|
{ "fld", STi, NOFUNC, NOFUNC },
|
|
{ "fxch", STi, NOFUNC, NOFUNC },
|
|
{ FGRPd9_2 },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ FGRPd9_4 },
|
|
{ FGRPd9_5 },
|
|
{ FGRPd9_6 },
|
|
{ FGRPd9_7 },
|
|
},
|
|
/* da */
|
|
{
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ FGRPda_5 },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
},
|
|
/* db */
|
|
{
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ FGRPdb_4 },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
},
|
|
/* dc */
|
|
{
|
|
{ "fadd", STi, ST, NOFUNC },
|
|
{ "fmul", STi, ST, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "fsub", STi, ST, NOFUNC },
|
|
{ "fsubr", STi, ST, NOFUNC },
|
|
{ "fdiv", STi, ST, NOFUNC },
|
|
{ "fdivr", STi, ST, NOFUNC },
|
|
},
|
|
/* dd */
|
|
{
|
|
{ "ffree", STi, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "fst", STi, NOFUNC, NOFUNC },
|
|
{ "fstp", STi, NOFUNC, NOFUNC },
|
|
{ "fucom", STi, NOFUNC, NOFUNC },
|
|
{ "fucomp", STi, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
},
|
|
/* de */
|
|
{
|
|
{ "faddp", STi, ST, NOFUNC },
|
|
{ "fmulp", STi, ST, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ FGRPde_3 },
|
|
{ "fsubp", STi, ST, NOFUNC },
|
|
{ "fsubrp", STi, ST, NOFUNC },
|
|
{ "fdivp", STi, ST, NOFUNC },
|
|
{ "fdivrp", STi, ST, NOFUNC },
|
|
},
|
|
/* df */
|
|
{
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ FGRPdf_4 },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
{ "(bad)", NOFUNC, NOFUNC, NOFUNC },
|
|
},
|
|
};
|
|
|
|
|
|
const char *fgrps[][8] = {
|
|
/* d9_2 0 */
|
|
{
|
|
"fnop","(bad)","(bad)","(bad)","(bad)","(bad)","(bad)","(bad)",
|
|
},
|
|
|
|
/* d9_4 1 */
|
|
{
|
|
"fchs","fabs","(bad)","(bad)","ftst","fxam","(bad)","(bad)",
|
|
},
|
|
|
|
/* d9_5 2 */
|
|
{
|
|
"fld1","fldl2t","fldl2e","fldpi","fldlg2","fldln2","fldz","(bad)",
|
|
},
|
|
|
|
/* d9_6 3 */
|
|
{
|
|
"f2xm1","fyl2x","fptan","fpatan","fxtract","fprem1","fdecstp","fincstp",
|
|
},
|
|
|
|
/* d9_7 4 */
|
|
{
|
|
"fprem","fyl2xp1","fsqrt","fsincos","frndint","fscale","fsin","fcos",
|
|
},
|
|
|
|
/* da_5 5 */
|
|
{
|
|
"(bad)","fucompp","(bad)","(bad)","(bad)","(bad)","(bad)","(bad)",
|
|
},
|
|
|
|
/* db_4 6 */
|
|
{
|
|
"feni(287 only)","fdisi(287 only)","fNclex","fNinit",
|
|
"fNsetpm(287 only)","(bad)","(bad)","(bad)",
|
|
},
|
|
|
|
/* de_3 7 */
|
|
{
|
|
"(bad)","fcompp","(bad)","(bad)","(bad)","(bad)","(bad)","(bad)",
|
|
},
|
|
|
|
/* df_4 8 */
|
|
{
|
|
"fNstsw","(bad)","(bad)","(bad)","(bad)","(bad)","(bad)","(bad)",
|
|
},
|
|
};
|
|
|
|
|
|
static void
|
|
dofloat ()
|
|
{
|
|
struct dis386 *dp;
|
|
unsigned char floatop;
|
|
|
|
floatop = codep[-1];
|
|
|
|
if (mod != 3)
|
|
{
|
|
putop (float_mem[(floatop - 0xd8) * 8 + reg]);
|
|
obufp = op1out;
|
|
OP_E (v_mode);
|
|
return;
|
|
}
|
|
codep++;
|
|
|
|
dp = &float_reg[floatop - 0xd8][reg];
|
|
if (dp->name == NULL)
|
|
{
|
|
putop (fgrps[dp->bytemode1][rm]);
|
|
/* instruction fnstsw is only one with strange arg */
|
|
if (floatop == 0xdf && *codep == 0xe0)
|
|
strcpy (op1out, "%eax");
|
|
}
|
|
else
|
|
{
|
|
putop (dp->name);
|
|
obufp = op1out;
|
|
if (dp->op1)
|
|
(*dp->op1)(dp->bytemode1);
|
|
obufp = op2out;
|
|
if (dp->op2)
|
|
(*dp->op2)(dp->bytemode2);
|
|
}
|
|
}
|
|
|
|
static void
|
|
OP_ST(int dummy)
|
|
{
|
|
oappend ("%st");
|
|
}
|
|
|
|
static void
|
|
OP_STi(int dummy)
|
|
{
|
|
sprintf (scratchbuf, "%%st(%d)", rm);
|
|
oappend (scratchbuf);
|
|
}
|
|
|
|
|
|
/* capital letters in template are macros */
|
|
static void
|
|
putop(const char *template)
|
|
{
|
|
const char *p;
|
|
|
|
for (p = template; *p; p++)
|
|
{
|
|
switch (*p)
|
|
{
|
|
default:
|
|
*obufp++ = *p;
|
|
break;
|
|
case 'C': /* For jcxz/jecxz */
|
|
if (aflag == 0)
|
|
*obufp++ = 'e';
|
|
break;
|
|
case 'N':
|
|
if ((prefixes & PREFIX_FWAIT) == 0)
|
|
*obufp++ = 'n';
|
|
break;
|
|
case 'S':
|
|
/* operand size flag */
|
|
if (dflag)
|
|
*obufp++ = 'l';
|
|
else
|
|
*obufp++ = 'w';
|
|
break;
|
|
}
|
|
}
|
|
*obufp = 0;
|
|
}
|
|
|
|
static void
|
|
oappend(const char *s)
|
|
{
|
|
strcpy (obufp, s);
|
|
obufp += strlen (s);
|
|
*obufp = 0;
|
|
}
|
|
|
|
static void
|
|
append_prefix()
|
|
{
|
|
if (prefixes & PREFIX_CS)
|
|
oappend ("%cs:");
|
|
if (prefixes & PREFIX_DS)
|
|
oappend ("%ds:");
|
|
if (prefixes & PREFIX_SS)
|
|
oappend ("%ss:");
|
|
if (prefixes & PREFIX_ES)
|
|
oappend ("%es:");
|
|
if (prefixes & PREFIX_FS)
|
|
oappend ("%fs:");
|
|
if (prefixes & PREFIX_GS)
|
|
oappend ("%gs:");
|
|
}
|
|
|
|
static void
|
|
OP_indirE(int bytemode)
|
|
{
|
|
oappend ("*");
|
|
OP_E (bytemode);
|
|
}
|
|
|
|
static void
|
|
OP_E(int bytemode)
|
|
{
|
|
int disp;
|
|
int havesib;
|
|
int base;
|
|
int idx;
|
|
int scale;
|
|
int havebase;
|
|
|
|
/* skip mod/rm byte */
|
|
codep++;
|
|
|
|
havesib = 0;
|
|
havebase = 0;
|
|
disp = 0;
|
|
|
|
if (mod == 3) {
|
|
switch (bytemode) {
|
|
case b_mode:
|
|
oappend (names8[rm]);
|
|
break;
|
|
case w_mode:
|
|
oappend (names16[rm]);
|
|
break;
|
|
case v_mode:
|
|
if (dflag)
|
|
oappend (names32[rm]);
|
|
else
|
|
oappend (names16[rm]);
|
|
break;
|
|
default:
|
|
oappend ("<bad dis table>");
|
|
break;
|
|
}
|
|
return;
|
|
}
|
|
|
|
append_prefix ();
|
|
|
|
if (aflag && rm == 4) {
|
|
havesib = 1;
|
|
havebase = 1;
|
|
scale = (*codep >> 6) & 3;
|
|
idx = (*codep >> 3) & 7;
|
|
base = *codep & 7;
|
|
codep++;
|
|
}
|
|
|
|
switch (mod) {
|
|
case 0:
|
|
if (aflag) {
|
|
switch (rm) {
|
|
case 4:
|
|
/* implies havesib and havebase */
|
|
if (base == 5) {
|
|
havebase = 0;
|
|
disp = get32 ();
|
|
}
|
|
break;
|
|
case 5:
|
|
disp = get32 ();
|
|
break;
|
|
default:
|
|
havebase = 1;
|
|
base = rm;
|
|
break;
|
|
}
|
|
} else {
|
|
if (rm == 6) {
|
|
havebase = 0;
|
|
disp = get16 ();
|
|
} else {
|
|
havebase = 1;
|
|
base = rm;
|
|
}
|
|
}
|
|
break;
|
|
case 1:
|
|
disp = *(char *)codep++;
|
|
if (!aflag || rm != 4) {
|
|
havebase = 1;
|
|
base = rm;
|
|
}
|
|
break;
|
|
case 2:
|
|
if (aflag)
|
|
disp = get32 ();
|
|
else
|
|
disp = get16 ();
|
|
if (!aflag || rm != 4) {
|
|
havebase = 1;
|
|
base = rm;
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (mod != 0 || ((aflag && rm == 5) || (havesib && base == 5))
|
|
|| (!aflag && rm == 6)) {
|
|
sprintf (scratchbuf, "0x%x", disp);
|
|
oappend (scratchbuf);
|
|
}
|
|
|
|
if (havebase || havesib) {
|
|
oappend ("(");
|
|
if (havebase)
|
|
oappend (aflag ? names32[base] : names16_pairs[base]);
|
|
if (havesib) {
|
|
if (idx != 4) {
|
|
sprintf (scratchbuf, ",%s", names32[idx]);
|
|
oappend (scratchbuf);
|
|
}
|
|
sprintf (scratchbuf, ",%d", 1 << scale);
|
|
oappend (scratchbuf);
|
|
}
|
|
oappend (")");
|
|
}
|
|
}
|
|
|
|
static void
|
|
OP_G(int bytemode)
|
|
{
|
|
switch (bytemode)
|
|
{
|
|
case b_mode:
|
|
oappend (names8[reg]);
|
|
break;
|
|
case w_mode:
|
|
oappend (names16[reg]);
|
|
break;
|
|
case d_mode:
|
|
oappend (names32[reg]);
|
|
break;
|
|
case v_mode:
|
|
if (dflag)
|
|
oappend (names32[reg]);
|
|
else
|
|
oappend (names16[reg]);
|
|
break;
|
|
default:
|
|
oappend ("<internal disassembler error>");
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int
|
|
get32()
|
|
{
|
|
int x = 0;
|
|
|
|
x = *codep++ & 0xff;
|
|
x |= (*codep++ & 0xff) << 8;
|
|
x |= (*codep++ & 0xff) << 16;
|
|
x |= (*codep++ & 0xff) << 24;
|
|
return (x);
|
|
}
|
|
|
|
static int
|
|
get16()
|
|
{
|
|
int x = 0;
|
|
|
|
x = *codep++ & 0xff;
|
|
x |= (*codep++ & 0xff) << 8;
|
|
return (x);
|
|
}
|
|
|
|
static void
|
|
OP_REG(int code)
|
|
{
|
|
const char *s;
|
|
|
|
switch (code)
|
|
{
|
|
case indir_dx_reg: s = "(%dx)"; break;
|
|
case ax_reg: case cx_reg: case dx_reg: case bx_reg:
|
|
case sp_reg: case bp_reg: case si_reg: case di_reg:
|
|
s = names16[code - ax_reg];
|
|
break;
|
|
case es_reg: case ss_reg: case cs_reg:
|
|
case ds_reg: case fs_reg: case gs_reg:
|
|
s = names_seg[code - es_reg];
|
|
break;
|
|
case al_reg: case ah_reg: case cl_reg: case ch_reg:
|
|
case dl_reg: case dh_reg: case bl_reg: case bh_reg:
|
|
s = names8[code - al_reg];
|
|
break;
|
|
case eAX_reg: case eCX_reg: case eDX_reg: case eBX_reg:
|
|
case eSP_reg: case eBP_reg: case eSI_reg: case eDI_reg:
|
|
if (dflag)
|
|
s = names32[code - eAX_reg];
|
|
else
|
|
s = names16[code - eAX_reg];
|
|
break;
|
|
default:
|
|
s = "<internal disassembler error>";
|
|
break;
|
|
}
|
|
oappend (s);
|
|
}
|
|
|
|
static void
|
|
OP_I(int bytemode)
|
|
{
|
|
int op;
|
|
|
|
switch (bytemode)
|
|
{
|
|
case b_mode:
|
|
op = *codep++ & 0xff;
|
|
break;
|
|
case v_mode:
|
|
if (dflag)
|
|
op = get32 ();
|
|
else
|
|
op = get16 ();
|
|
break;
|
|
case w_mode:
|
|
op = get16 ();
|
|
break;
|
|
default:
|
|
oappend ("<internal disassembler error>");
|
|
return;
|
|
}
|
|
sprintf (scratchbuf, "$0x%x", op);
|
|
oappend (scratchbuf);
|
|
}
|
|
|
|
static void
|
|
OP_sI(int bytemode)
|
|
{
|
|
int op;
|
|
|
|
switch (bytemode)
|
|
{
|
|
case b_mode:
|
|
op = *(char *)codep++;
|
|
break;
|
|
case v_mode:
|
|
if (dflag)
|
|
op = get32 ();
|
|
else
|
|
op = (short)get16();
|
|
break;
|
|
case w_mode:
|
|
op = (short)get16 ();
|
|
break;
|
|
default:
|
|
oappend ("<internal disassembler error>");
|
|
return;
|
|
}
|
|
sprintf (scratchbuf, "$0x%x", op);
|
|
oappend (scratchbuf);
|
|
}
|
|
|
|
static void
|
|
OP_J(int bytemode)
|
|
{
|
|
int disp;
|
|
|
|
switch (bytemode)
|
|
{
|
|
case b_mode:
|
|
disp = *(char *)codep++;
|
|
append_pc(start_pc + codep - start_codep + disp);
|
|
break;
|
|
case v_mode:
|
|
if (dflag) {
|
|
disp = get32 ();
|
|
append_pc(start_pc + codep - start_codep + disp);
|
|
} else {
|
|
disp = (short)get16 ();
|
|
disp = (((start_pc + codep - start_codep) & 0xffff) + disp) & 0xffff;
|
|
append_pc((start_pc & 0xffff0000) | disp);
|
|
}
|
|
break;
|
|
default:
|
|
oappend ("<internal disassembelr error>");
|
|
return;
|
|
}
|
|
|
|
oappend (scratchbuf);
|
|
}
|
|
|
|
static void
|
|
append_pc(unsigned long pc)
|
|
{
|
|
sprintf(scratchbuf, "%04lx:%04lx", pc >> 16, pc & 0xffff);
|
|
}
|
|
|
|
static void
|
|
OP_SEG(int dummy)
|
|
{
|
|
static const char *sreg[] = {
|
|
"%es","%cs","%ss","%ds","%fs","%gs","%?","%?",
|
|
};
|
|
|
|
oappend (sreg[reg]);
|
|
}
|
|
|
|
static void
|
|
OP_DIR(int size)
|
|
{
|
|
int seg, offset;
|
|
|
|
switch (size)
|
|
{
|
|
case lptr:
|
|
if (dflag)
|
|
{
|
|
offset = get32 ();
|
|
seg = get16 ();
|
|
}
|
|
else
|
|
{
|
|
offset = get16 ();
|
|
seg = get16 ();
|
|
}
|
|
sprintf (scratchbuf, "%04x:%04x", seg, offset);
|
|
oappend (scratchbuf);
|
|
break;
|
|
case v_mode:
|
|
if (aflag)
|
|
offset = get32 ();
|
|
else
|
|
offset = (short)get16 ();
|
|
|
|
append_pc(start_pc + codep - start_codep + offset);
|
|
oappend (scratchbuf);
|
|
break;
|
|
default:
|
|
oappend ("<internal disassembler error>");
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
OP_OFF(int dummy)
|
|
{
|
|
int off;
|
|
|
|
if (aflag)
|
|
off = get32 ();
|
|
else
|
|
off = get16 ();
|
|
|
|
sprintf (scratchbuf, "0x%x", off);
|
|
oappend (scratchbuf);
|
|
}
|
|
|
|
static void
|
|
OP_ESDI(int dummy)
|
|
{
|
|
oappend ("%es:(");
|
|
oappend (aflag ? "%edi" : "%di");
|
|
oappend (")");
|
|
}
|
|
|
|
static void
|
|
OP_DSSI(int dummy)
|
|
{
|
|
oappend ("%ds:(");
|
|
oappend (aflag ? "%esi" : "%si");
|
|
oappend (")");
|
|
}
|
|
|
|
static void
|
|
OP_C(int dummy)
|
|
{
|
|
codep++; /* skip mod/rm */
|
|
sprintf (scratchbuf, "%%cr%d", reg);
|
|
oappend (scratchbuf);
|
|
}
|
|
|
|
static void
|
|
OP_D(int dummy)
|
|
{
|
|
codep++; /* skip mod/rm */
|
|
sprintf (scratchbuf, "%%db%d", reg);
|
|
oappend (scratchbuf);
|
|
}
|
|
|
|
static void
|
|
OP_T(int dummy)
|
|
{
|
|
codep++; /* skip mod/rm */
|
|
sprintf (scratchbuf, "%%tr%d", reg);
|
|
oappend (scratchbuf);
|
|
}
|
|
|
|
static void
|
|
OP_rm(int bytemode)
|
|
{
|
|
switch (bytemode)
|
|
{
|
|
case d_mode:
|
|
oappend (names32[rm]);
|
|
break;
|
|
case w_mode:
|
|
oappend (names16[rm]);
|
|
break;
|
|
}
|
|
}
|
|
|
|
#else
|
|
|
|
i386dis (pc, inbuf, outbuf, mode)
|
|
int pc;
|
|
unsigned char *inbuf;
|
|
char *outbuf;
|
|
{
|
|
strcpy (outbuf, "(no disassembler)");
|
|
return (1);
|
|
}
|
|
|
|
#endif /* DISASSEMBLER */
|