1408 lines
40 KiB
C
1408 lines
40 KiB
C
/*
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* Mach Operating System
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* Copyright (c) 1991,1990 Carnegie Mellon University
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* All Rights Reserved.
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*
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* Permission to use, copy, modify and distribute this software and its
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* documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
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* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* Instruction disassembler.
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*/
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#include <sys/param.h>
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#include <ddb/ddb.h>
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#include <ddb/db_access.h>
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#include <ddb/db_sym.h>
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/*
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* Size attributes
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*/
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#define BYTE 0
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#define WORD 1
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#define LONG 2
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#define QUAD 3
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#define SNGL 4
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#define DBLR 5
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#define EXTR 6
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#define SDEP 7
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#define NONE 8
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/*
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* Addressing modes
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*/
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#define E 1 /* general effective address */
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#define Eind 2 /* indirect address (jump, call) */
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#define Ew 3 /* address, word size */
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#define Eb 4 /* address, byte size */
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#define R 5 /* register, in 'reg' field */
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#define Rw 6 /* word register, in 'reg' field */
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#define Ri 7 /* register in instruction */
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#define S 8 /* segment reg, in 'reg' field */
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#define Si 9 /* segment reg, in instruction */
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#define A 10 /* accumulator */
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#define BX 11 /* (bx) */
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#define CL 12 /* cl, for shifts */
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#define DX 13 /* dx, for IO */
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#define SI 14 /* si */
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#define DI 15 /* di */
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#define CR 16 /* control register */
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#define DR 17 /* debug register */
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#define TR 18 /* test register */
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#define I 19 /* immediate, unsigned */
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#define Is 20 /* immediate, signed */
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#define Ib 21 /* byte immediate, unsigned */
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#define Ibs 22 /* byte immediate, signed */
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#define Iw 23 /* word immediate, unsigned */
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#define O 25 /* direct address */
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#define Db 26 /* byte displacement from EIP */
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#define Dl 27 /* long displacement from EIP */
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#define o1 28 /* constant 1 */
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#define o3 29 /* constant 3 */
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#define OS 30 /* immediate offset/segment */
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#define ST 31 /* FP stack top */
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#define STI 32 /* FP stack */
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#define X 33 /* extended FP op */
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#define XA 34 /* for 'fstcw %ax' */
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#define El 35 /* address, long size */
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#define Ril 36 /* long register in instruction */
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#define Iba 37 /* byte immediate, don't print if 0xa */
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struct inst {
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const char * i_name; /* name */
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short i_has_modrm; /* has regmodrm byte */
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short i_size; /* operand size */
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int i_mode; /* addressing modes */
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const void * i_extra; /* pointer to extra opcode table */
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};
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#define op1(x) (x)
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#define op2(x,y) ((x)|((y)<<8))
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#define op3(x,y,z) ((x)|((y)<<8)|((z)<<16))
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struct finst {
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const char * f_name; /* name for memory instruction */
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int f_size; /* size for memory instruction */
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int f_rrmode; /* mode for rr instruction */
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const void * f_rrname; /* name for rr instruction
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(or pointer to table) */
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};
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static const char * const db_Grp6[] = {
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"sldt",
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"str",
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"lldt",
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"ltr",
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"verr",
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"verw",
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"",
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""
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};
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static const char * const db_Grp7[] = {
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"sgdt",
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"sidt",
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"lgdt",
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"lidt",
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"smsw",
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"",
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"lmsw",
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"invlpg"
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};
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static const char * const db_Grp8[] = {
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"",
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"",
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"",
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"",
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"bt",
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"bts",
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"btr",
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"btc"
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};
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static const char * const db_Grp9[] = {
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"",
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"cmpxchg8b",
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"",
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"",
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"",
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"",
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"",
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""
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};
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static const struct inst db_inst_0f0x[] = {
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/*00*/ { "", TRUE, NONE, op1(Ew), db_Grp6 },
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/*01*/ { "", TRUE, NONE, op1(Ew), db_Grp7 },
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/*02*/ { "lar", TRUE, LONG, op2(E,R), 0 },
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/*03*/ { "lsl", TRUE, LONG, op2(E,R), 0 },
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/*04*/ { "", FALSE, NONE, 0, 0 },
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/*05*/ { "", FALSE, NONE, 0, 0 },
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/*06*/ { "clts", FALSE, NONE, 0, 0 },
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/*07*/ { "", FALSE, NONE, 0, 0 },
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/*08*/ { "invd", FALSE, NONE, 0, 0 },
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/*09*/ { "wbinvd",FALSE, NONE, 0, 0 },
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/*0a*/ { "", FALSE, NONE, 0, 0 },
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/*0b*/ { "", FALSE, NONE, 0, 0 },
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/*0c*/ { "", FALSE, NONE, 0, 0 },
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/*0d*/ { "", FALSE, NONE, 0, 0 },
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/*0e*/ { "", FALSE, NONE, 0, 0 },
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/*0f*/ { "", FALSE, NONE, 0, 0 },
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};
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static const struct inst db_inst_0f2x[] = {
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/*20*/ { "mov", TRUE, LONG, op2(CR,El), 0 },
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/*21*/ { "mov", TRUE, LONG, op2(DR,El), 0 },
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/*22*/ { "mov", TRUE, LONG, op2(El,CR), 0 },
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/*23*/ { "mov", TRUE, LONG, op2(El,DR), 0 },
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/*24*/ { "mov", TRUE, LONG, op2(TR,El), 0 },
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/*25*/ { "", FALSE, NONE, 0, 0 },
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/*26*/ { "mov", TRUE, LONG, op2(El,TR), 0 },
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/*27*/ { "", FALSE, NONE, 0, 0 },
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/*28*/ { "", FALSE, NONE, 0, 0 },
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/*29*/ { "", FALSE, NONE, 0, 0 },
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/*2a*/ { "", FALSE, NONE, 0, 0 },
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/*2b*/ { "", FALSE, NONE, 0, 0 },
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/*2c*/ { "", FALSE, NONE, 0, 0 },
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/*2d*/ { "", FALSE, NONE, 0, 0 },
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/*2e*/ { "", FALSE, NONE, 0, 0 },
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/*2f*/ { "", FALSE, NONE, 0, 0 },
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};
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static const struct inst db_inst_0f3x[] = {
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/*30*/ { "wrmsr", FALSE, NONE, 0, 0 },
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/*31*/ { "rdtsc", FALSE, NONE, 0, 0 },
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/*32*/ { "rdmsr", FALSE, NONE, 0, 0 },
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/*33*/ { "rdpmc", FALSE, NONE, 0, 0 },
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/*34*/ { "", FALSE, NONE, 0, 0 },
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/*35*/ { "", FALSE, NONE, 0, 0 },
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/*36*/ { "", FALSE, NONE, 0, 0 },
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/*37*/ { "", FALSE, NONE, 0, 0 },
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/*38*/ { "", FALSE, NONE, 0, 0 },
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/*39*/ { "", FALSE, NONE, 0, 0 },
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/*3a*/ { "", FALSE, NONE, 0, 0 },
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/*3b*/ { "", FALSE, NONE, 0, 0 },
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/*3c*/ { "", FALSE, NONE, 0, 0 },
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/*3d*/ { "", FALSE, NONE, 0, 0 },
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/*3e*/ { "", FALSE, NONE, 0, 0 },
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/*3f*/ { "", FALSE, NONE, 0, 0 },
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};
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static const struct inst db_inst_0f8x[] = {
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/*80*/ { "jo", FALSE, NONE, op1(Dl), 0 },
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/*81*/ { "jno", FALSE, NONE, op1(Dl), 0 },
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/*82*/ { "jb", FALSE, NONE, op1(Dl), 0 },
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/*83*/ { "jnb", FALSE, NONE, op1(Dl), 0 },
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/*84*/ { "jz", FALSE, NONE, op1(Dl), 0 },
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/*85*/ { "jnz", FALSE, NONE, op1(Dl), 0 },
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/*86*/ { "jbe", FALSE, NONE, op1(Dl), 0 },
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/*87*/ { "jnbe", FALSE, NONE, op1(Dl), 0 },
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/*88*/ { "js", FALSE, NONE, op1(Dl), 0 },
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/*89*/ { "jns", FALSE, NONE, op1(Dl), 0 },
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/*8a*/ { "jp", FALSE, NONE, op1(Dl), 0 },
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/*8b*/ { "jnp", FALSE, NONE, op1(Dl), 0 },
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/*8c*/ { "jl", FALSE, NONE, op1(Dl), 0 },
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/*8d*/ { "jnl", FALSE, NONE, op1(Dl), 0 },
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/*8e*/ { "jle", FALSE, NONE, op1(Dl), 0 },
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/*8f*/ { "jnle", FALSE, NONE, op1(Dl), 0 },
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};
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static const struct inst db_inst_0f9x[] = {
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/*90*/ { "seto", TRUE, NONE, op1(Eb), 0 },
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/*91*/ { "setno", TRUE, NONE, op1(Eb), 0 },
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/*92*/ { "setb", TRUE, NONE, op1(Eb), 0 },
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/*93*/ { "setnb", TRUE, NONE, op1(Eb), 0 },
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/*94*/ { "setz", TRUE, NONE, op1(Eb), 0 },
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/*95*/ { "setnz", TRUE, NONE, op1(Eb), 0 },
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/*96*/ { "setbe", TRUE, NONE, op1(Eb), 0 },
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/*97*/ { "setnbe",TRUE, NONE, op1(Eb), 0 },
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/*98*/ { "sets", TRUE, NONE, op1(Eb), 0 },
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/*99*/ { "setns", TRUE, NONE, op1(Eb), 0 },
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/*9a*/ { "setp", TRUE, NONE, op1(Eb), 0 },
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/*9b*/ { "setnp", TRUE, NONE, op1(Eb), 0 },
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/*9c*/ { "setl", TRUE, NONE, op1(Eb), 0 },
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/*9d*/ { "setnl", TRUE, NONE, op1(Eb), 0 },
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/*9e*/ { "setle", TRUE, NONE, op1(Eb), 0 },
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/*9f*/ { "setnle",TRUE, NONE, op1(Eb), 0 },
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};
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static const struct inst db_inst_0fax[] = {
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/*a0*/ { "push", FALSE, NONE, op1(Si), 0 },
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/*a1*/ { "pop", FALSE, NONE, op1(Si), 0 },
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/*a2*/ { "cpuid", FALSE, NONE, 0, 0 },
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/*a3*/ { "bt", TRUE, LONG, op2(R,E), 0 },
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/*a4*/ { "shld", TRUE, LONG, op3(Ib,R,E), 0 },
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/*a5*/ { "shld", TRUE, LONG, op3(CL,R,E), 0 },
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/*a6*/ { "", FALSE, NONE, 0, 0 },
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/*a7*/ { "", FALSE, NONE, 0, 0 },
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/*a8*/ { "push", FALSE, NONE, op1(Si), 0 },
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/*a9*/ { "pop", FALSE, NONE, op1(Si), 0 },
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/*aa*/ { "rsm", FALSE, NONE, 0, 0 },
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/*ab*/ { "bts", TRUE, LONG, op2(R,E), 0 },
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/*ac*/ { "shrd", TRUE, LONG, op3(Ib,R,E), 0 },
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/*ad*/ { "shrd", TRUE, LONG, op3(CL,R,E), 0 },
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/*a6*/ { "", FALSE, NONE, 0, 0 },
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/*a7*/ { "imul", TRUE, LONG, op2(E,R), 0 },
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};
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static const struct inst db_inst_0fbx[] = {
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/*b0*/ { "cmpxchg",TRUE, BYTE, op2(R, E), 0 },
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/*b0*/ { "cmpxchg",TRUE, LONG, op2(R, E), 0 },
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/*b2*/ { "lss", TRUE, LONG, op2(E, R), 0 },
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/*b3*/ { "btr", TRUE, LONG, op2(R, E), 0 },
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/*b4*/ { "lfs", TRUE, LONG, op2(E, R), 0 },
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/*b5*/ { "lgs", TRUE, LONG, op2(E, R), 0 },
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/*b6*/ { "movzb", TRUE, LONG, op2(Eb, R), 0 },
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/*b7*/ { "movzw", TRUE, LONG, op2(Ew, R), 0 },
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/*b8*/ { "", FALSE, NONE, 0, 0 },
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/*b9*/ { "", FALSE, NONE, 0, 0 },
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/*ba*/ { "", TRUE, LONG, op2(Ib, E), db_Grp8 },
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/*bb*/ { "btc", TRUE, LONG, op2(R, E), 0 },
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/*bc*/ { "bsf", TRUE, LONG, op2(E, R), 0 },
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/*bd*/ { "bsr", TRUE, LONG, op2(E, R), 0 },
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/*be*/ { "movsb", TRUE, LONG, op2(Eb, R), 0 },
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/*bf*/ { "movsw", TRUE, LONG, op2(Ew, R), 0 },
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};
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static const struct inst db_inst_0fcx[] = {
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/*c0*/ { "xadd", TRUE, BYTE, op2(R, E), 0 },
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/*c1*/ { "xadd", TRUE, LONG, op2(R, E), 0 },
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/*c2*/ { "", FALSE, NONE, 0, 0 },
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/*c3*/ { "", FALSE, NONE, 0, 0 },
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/*c4*/ { "", FALSE, NONE, 0, 0 },
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/*c5*/ { "", FALSE, NONE, 0, 0 },
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/*c6*/ { "", FALSE, NONE, 0, 0 },
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/*c7*/ { "", TRUE, NONE, op1(E), db_Grp9 },
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/*c8*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
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/*c9*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
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/*ca*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
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/*cb*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
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/*cc*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
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/*cd*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
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/*ce*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
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/*cf*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
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};
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static const struct inst * const db_inst_0f[] = {
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db_inst_0f0x,
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0,
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db_inst_0f2x,
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db_inst_0f3x,
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0,
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0,
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0,
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0,
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db_inst_0f8x,
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db_inst_0f9x,
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db_inst_0fax,
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db_inst_0fbx,
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db_inst_0fcx,
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0,
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0,
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0
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};
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static const char * const db_Esc92[] = {
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"fnop", "", "", "", "", "", "", ""
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};
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static const char * const db_Esc94[] = {
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"fchs", "fabs", "", "", "ftst", "fxam", "", ""
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};
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static const char * const db_Esc95[] = {
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"fld1", "fldl2t","fldl2e","fldpi","fldlg2","fldln2","fldz",""
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};
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static const char * const db_Esc96[] = {
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"f2xm1","fyl2x","fptan","fpatan","fxtract","fprem1","fdecstp",
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"fincstp"
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};
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static const char * const db_Esc97[] = {
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"fprem","fyl2xp1","fsqrt","fsincos","frndint","fscale","fsin","fcos"
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};
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static const char * const db_Esca5[] = {
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"", "fucompp","", "", "", "", "", ""
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};
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static const char * const db_Escb4[] = {
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"fneni","fndisi", "fnclex","fninit","fsetpm", "", "", ""
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};
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static const char * const db_Esce3[] = {
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"", "fcompp","", "", "", "", "", ""
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};
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static const char * const db_Escf4[] = {
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"fnstsw","", "", "", "", "", "", ""
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};
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static const struct finst db_Esc8[] = {
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/*0*/ { "fadd", SNGL, op2(STI,ST), 0 },
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/*1*/ { "fmul", SNGL, op2(STI,ST), 0 },
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/*2*/ { "fcom", SNGL, op2(STI,ST), 0 },
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/*3*/ { "fcomp", SNGL, op2(STI,ST), 0 },
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/*4*/ { "fsub", SNGL, op2(STI,ST), 0 },
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/*5*/ { "fsubr", SNGL, op2(STI,ST), 0 },
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/*6*/ { "fdiv", SNGL, op2(STI,ST), 0 },
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/*7*/ { "fdivr", SNGL, op2(STI,ST), 0 },
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};
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static const struct finst db_Esc9[] = {
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/*0*/ { "fld", SNGL, op1(STI), 0 },
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/*1*/ { "", NONE, op1(STI), "fxch" },
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/*2*/ { "fst", SNGL, op1(X), db_Esc92 },
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/*3*/ { "fstp", SNGL, 0, 0 },
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/*4*/ { "fldenv", NONE, op1(X), db_Esc94 },
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/*5*/ { "fldcw", NONE, op1(X), db_Esc95 },
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/*6*/ { "fnstenv",NONE, op1(X), db_Esc96 },
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/*7*/ { "fnstcw", NONE, op1(X), db_Esc97 },
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};
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static const struct finst db_Esca[] = {
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/*0*/ { "fiadd", LONG, 0, 0 },
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/*1*/ { "fimul", LONG, 0, 0 },
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/*2*/ { "ficom", LONG, 0, 0 },
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/*3*/ { "ficomp", LONG, 0, 0 },
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/*4*/ { "fisub", LONG, 0, 0 },
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/*5*/ { "fisubr", LONG, op1(X), db_Esca5 },
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/*6*/ { "fidiv", LONG, 0, 0 },
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/*7*/ { "fidivr", LONG, 0, 0 }
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};
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static const struct finst db_Escb[] = {
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/*0*/ { "fild", LONG, 0, 0 },
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/*1*/ { "", NONE, 0, 0 },
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/*2*/ { "fist", LONG, 0, 0 },
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/*3*/ { "fistp", LONG, 0, 0 },
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/*4*/ { "", WORD, op1(X), db_Escb4 },
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/*5*/ { "fld", EXTR, 0, 0 },
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/*6*/ { "", WORD, 0, 0 },
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/*7*/ { "fstp", EXTR, 0, 0 },
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};
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static const struct finst db_Escc[] = {
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/*0*/ { "fadd", DBLR, op2(ST,STI), 0 },
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/*1*/ { "fmul", DBLR, op2(ST,STI), 0 },
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/*2*/ { "fcom", DBLR, 0, 0 },
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/*3*/ { "fcomp", DBLR, 0, 0 },
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/*4*/ { "fsub", DBLR, op2(ST,STI), "fsubr" },
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/*5*/ { "fsubr", DBLR, op2(ST,STI), "fsub" },
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/*6*/ { "fdiv", DBLR, op2(ST,STI), "fdivr" },
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/*7*/ { "fdivr", DBLR, op2(ST,STI), "fdiv" },
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};
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static const struct finst db_Escd[] = {
|
|
/*0*/ { "fld", DBLR, op1(STI), "ffree" },
|
|
/*1*/ { "", NONE, 0, 0 },
|
|
/*2*/ { "fst", DBLR, op1(STI), 0 },
|
|
/*3*/ { "fstp", DBLR, op1(STI), 0 },
|
|
/*4*/ { "frstor", NONE, op1(STI), "fucom" },
|
|
/*5*/ { "", NONE, op1(STI), "fucomp" },
|
|
/*6*/ { "fnsave", NONE, 0, 0 },
|
|
/*7*/ { "fnstsw", NONE, 0, 0 },
|
|
};
|
|
|
|
static const struct finst db_Esce[] = {
|
|
/*0*/ { "fiadd", WORD, op2(ST,STI), "faddp" },
|
|
/*1*/ { "fimul", WORD, op2(ST,STI), "fmulp" },
|
|
/*2*/ { "ficom", WORD, 0, 0 },
|
|
/*3*/ { "ficomp", WORD, op1(X), db_Esce3 },
|
|
/*4*/ { "fisub", WORD, op2(ST,STI), "fsubrp" },
|
|
/*5*/ { "fisubr", WORD, op2(ST,STI), "fsubp" },
|
|
/*6*/ { "fidiv", WORD, op2(ST,STI), "fdivrp" },
|
|
/*7*/ { "fidivr", WORD, op2(ST,STI), "fdivp" },
|
|
};
|
|
|
|
static const struct finst db_Escf[] = {
|
|
/*0*/ { "fild", WORD, 0, 0 },
|
|
/*1*/ { "", NONE, 0, 0 },
|
|
/*2*/ { "fist", WORD, 0, 0 },
|
|
/*3*/ { "fistp", WORD, 0, 0 },
|
|
/*4*/ { "fbld", NONE, op1(XA), db_Escf4 },
|
|
/*5*/ { "fild", QUAD, 0, 0 },
|
|
/*6*/ { "fbstp", NONE, 0, 0 },
|
|
/*7*/ { "fistp", QUAD, 0, 0 },
|
|
};
|
|
|
|
static const struct finst * const db_Esc_inst[] = {
|
|
db_Esc8, db_Esc9, db_Esca, db_Escb,
|
|
db_Escc, db_Escd, db_Esce, db_Escf
|
|
};
|
|
|
|
static const char * const db_Grp1[] = {
|
|
"add",
|
|
"or",
|
|
"adc",
|
|
"sbb",
|
|
"and",
|
|
"sub",
|
|
"xor",
|
|
"cmp"
|
|
};
|
|
|
|
static const char * const db_Grp2[] = {
|
|
"rol",
|
|
"ror",
|
|
"rcl",
|
|
"rcr",
|
|
"shl",
|
|
"shr",
|
|
"shl",
|
|
"sar"
|
|
};
|
|
|
|
static const struct inst db_Grp3[] = {
|
|
{ "test", TRUE, NONE, op2(I,E), 0 },
|
|
{ "test", TRUE, NONE, op2(I,E), 0 },
|
|
{ "not", TRUE, NONE, op1(E), 0 },
|
|
{ "neg", TRUE, NONE, op1(E), 0 },
|
|
{ "mul", TRUE, NONE, op2(E,A), 0 },
|
|
{ "imul", TRUE, NONE, op2(E,A), 0 },
|
|
{ "div", TRUE, NONE, op2(E,A), 0 },
|
|
{ "idiv", TRUE, NONE, op2(E,A), 0 },
|
|
};
|
|
|
|
static const struct inst db_Grp4[] = {
|
|
{ "inc", TRUE, BYTE, op1(E), 0 },
|
|
{ "dec", TRUE, BYTE, op1(E), 0 },
|
|
{ "", TRUE, NONE, 0, 0 },
|
|
{ "", TRUE, NONE, 0, 0 },
|
|
{ "", TRUE, NONE, 0, 0 },
|
|
{ "", TRUE, NONE, 0, 0 },
|
|
{ "", TRUE, NONE, 0, 0 },
|
|
{ "", TRUE, NONE, 0, 0 }
|
|
};
|
|
|
|
static const struct inst db_Grp5[] = {
|
|
{ "inc", TRUE, LONG, op1(E), 0 },
|
|
{ "dec", TRUE, LONG, op1(E), 0 },
|
|
{ "call", TRUE, LONG, op1(Eind),0 },
|
|
{ "lcall", TRUE, LONG, op1(Eind),0 },
|
|
{ "jmp", TRUE, LONG, op1(Eind),0 },
|
|
{ "ljmp", TRUE, LONG, op1(Eind),0 },
|
|
{ "push", TRUE, LONG, op1(E), 0 },
|
|
{ "", TRUE, NONE, 0, 0 }
|
|
};
|
|
|
|
static const struct inst db_inst_table[256] = {
|
|
/*00*/ { "add", TRUE, BYTE, op2(R, E), 0 },
|
|
/*01*/ { "add", TRUE, LONG, op2(R, E), 0 },
|
|
/*02*/ { "add", TRUE, BYTE, op2(E, R), 0 },
|
|
/*03*/ { "add", TRUE, LONG, op2(E, R), 0 },
|
|
/*04*/ { "add", FALSE, BYTE, op2(I, A), 0 },
|
|
/*05*/ { "add", FALSE, LONG, op2(Is, A), 0 },
|
|
/*06*/ { "push", FALSE, NONE, op1(Si), 0 },
|
|
/*07*/ { "pop", FALSE, NONE, op1(Si), 0 },
|
|
|
|
/*08*/ { "or", TRUE, BYTE, op2(R, E), 0 },
|
|
/*09*/ { "or", TRUE, LONG, op2(R, E), 0 },
|
|
/*0a*/ { "or", TRUE, BYTE, op2(E, R), 0 },
|
|
/*0b*/ { "or", TRUE, LONG, op2(E, R), 0 },
|
|
/*0c*/ { "or", FALSE, BYTE, op2(I, A), 0 },
|
|
/*0d*/ { "or", FALSE, LONG, op2(I, A), 0 },
|
|
/*0e*/ { "push", FALSE, NONE, op1(Si), 0 },
|
|
/*0f*/ { "", FALSE, NONE, 0, 0 },
|
|
|
|
/*10*/ { "adc", TRUE, BYTE, op2(R, E), 0 },
|
|
/*11*/ { "adc", TRUE, LONG, op2(R, E), 0 },
|
|
/*12*/ { "adc", TRUE, BYTE, op2(E, R), 0 },
|
|
/*13*/ { "adc", TRUE, LONG, op2(E, R), 0 },
|
|
/*14*/ { "adc", FALSE, BYTE, op2(I, A), 0 },
|
|
/*15*/ { "adc", FALSE, LONG, op2(Is, A), 0 },
|
|
/*16*/ { "push", FALSE, NONE, op1(Si), 0 },
|
|
/*17*/ { "pop", FALSE, NONE, op1(Si), 0 },
|
|
|
|
/*18*/ { "sbb", TRUE, BYTE, op2(R, E), 0 },
|
|
/*19*/ { "sbb", TRUE, LONG, op2(R, E), 0 },
|
|
/*1a*/ { "sbb", TRUE, BYTE, op2(E, R), 0 },
|
|
/*1b*/ { "sbb", TRUE, LONG, op2(E, R), 0 },
|
|
/*1c*/ { "sbb", FALSE, BYTE, op2(I, A), 0 },
|
|
/*1d*/ { "sbb", FALSE, LONG, op2(Is, A), 0 },
|
|
/*1e*/ { "push", FALSE, NONE, op1(Si), 0 },
|
|
/*1f*/ { "pop", FALSE, NONE, op1(Si), 0 },
|
|
|
|
/*20*/ { "and", TRUE, BYTE, op2(R, E), 0 },
|
|
/*21*/ { "and", TRUE, LONG, op2(R, E), 0 },
|
|
/*22*/ { "and", TRUE, BYTE, op2(E, R), 0 },
|
|
/*23*/ { "and", TRUE, LONG, op2(E, R), 0 },
|
|
/*24*/ { "and", FALSE, BYTE, op2(I, A), 0 },
|
|
/*25*/ { "and", FALSE, LONG, op2(I, A), 0 },
|
|
/*26*/ { "", FALSE, NONE, 0, 0 },
|
|
/*27*/ { "daa", FALSE, NONE, 0, 0 },
|
|
|
|
/*28*/ { "sub", TRUE, BYTE, op2(R, E), 0 },
|
|
/*29*/ { "sub", TRUE, LONG, op2(R, E), 0 },
|
|
/*2a*/ { "sub", TRUE, BYTE, op2(E, R), 0 },
|
|
/*2b*/ { "sub", TRUE, LONG, op2(E, R), 0 },
|
|
/*2c*/ { "sub", FALSE, BYTE, op2(I, A), 0 },
|
|
/*2d*/ { "sub", FALSE, LONG, op2(Is, A), 0 },
|
|
/*2e*/ { "", FALSE, NONE, 0, 0 },
|
|
/*2f*/ { "das", FALSE, NONE, 0, 0 },
|
|
|
|
/*30*/ { "xor", TRUE, BYTE, op2(R, E), 0 },
|
|
/*31*/ { "xor", TRUE, LONG, op2(R, E), 0 },
|
|
/*32*/ { "xor", TRUE, BYTE, op2(E, R), 0 },
|
|
/*33*/ { "xor", TRUE, LONG, op2(E, R), 0 },
|
|
/*34*/ { "xor", FALSE, BYTE, op2(I, A), 0 },
|
|
/*35*/ { "xor", FALSE, LONG, op2(I, A), 0 },
|
|
/*36*/ { "", FALSE, NONE, 0, 0 },
|
|
/*37*/ { "aaa", FALSE, NONE, 0, 0 },
|
|
|
|
/*38*/ { "cmp", TRUE, BYTE, op2(R, E), 0 },
|
|
/*39*/ { "cmp", TRUE, LONG, op2(R, E), 0 },
|
|
/*3a*/ { "cmp", TRUE, BYTE, op2(E, R), 0 },
|
|
/*3b*/ { "cmp", TRUE, LONG, op2(E, R), 0 },
|
|
/*3c*/ { "cmp", FALSE, BYTE, op2(I, A), 0 },
|
|
/*3d*/ { "cmp", FALSE, LONG, op2(Is, A), 0 },
|
|
/*3e*/ { "", FALSE, NONE, 0, 0 },
|
|
/*3f*/ { "aas", FALSE, NONE, 0, 0 },
|
|
|
|
/*40*/ { "inc", FALSE, LONG, op1(Ri), 0 },
|
|
/*41*/ { "inc", FALSE, LONG, op1(Ri), 0 },
|
|
/*42*/ { "inc", FALSE, LONG, op1(Ri), 0 },
|
|
/*43*/ { "inc", FALSE, LONG, op1(Ri), 0 },
|
|
/*44*/ { "inc", FALSE, LONG, op1(Ri), 0 },
|
|
/*45*/ { "inc", FALSE, LONG, op1(Ri), 0 },
|
|
/*46*/ { "inc", FALSE, LONG, op1(Ri), 0 },
|
|
/*47*/ { "inc", FALSE, LONG, op1(Ri), 0 },
|
|
|
|
/*48*/ { "dec", FALSE, LONG, op1(Ri), 0 },
|
|
/*49*/ { "dec", FALSE, LONG, op1(Ri), 0 },
|
|
/*4a*/ { "dec", FALSE, LONG, op1(Ri), 0 },
|
|
/*4b*/ { "dec", FALSE, LONG, op1(Ri), 0 },
|
|
/*4c*/ { "dec", FALSE, LONG, op1(Ri), 0 },
|
|
/*4d*/ { "dec", FALSE, LONG, op1(Ri), 0 },
|
|
/*4e*/ { "dec", FALSE, LONG, op1(Ri), 0 },
|
|
/*4f*/ { "dec", FALSE, LONG, op1(Ri), 0 },
|
|
|
|
/*50*/ { "push", FALSE, LONG, op1(Ri), 0 },
|
|
/*51*/ { "push", FALSE, LONG, op1(Ri), 0 },
|
|
/*52*/ { "push", FALSE, LONG, op1(Ri), 0 },
|
|
/*53*/ { "push", FALSE, LONG, op1(Ri), 0 },
|
|
/*54*/ { "push", FALSE, LONG, op1(Ri), 0 },
|
|
/*55*/ { "push", FALSE, LONG, op1(Ri), 0 },
|
|
/*56*/ { "push", FALSE, LONG, op1(Ri), 0 },
|
|
/*57*/ { "push", FALSE, LONG, op1(Ri), 0 },
|
|
|
|
/*58*/ { "pop", FALSE, LONG, op1(Ri), 0 },
|
|
/*59*/ { "pop", FALSE, LONG, op1(Ri), 0 },
|
|
/*5a*/ { "pop", FALSE, LONG, op1(Ri), 0 },
|
|
/*5b*/ { "pop", FALSE, LONG, op1(Ri), 0 },
|
|
/*5c*/ { "pop", FALSE, LONG, op1(Ri), 0 },
|
|
/*5d*/ { "pop", FALSE, LONG, op1(Ri), 0 },
|
|
/*5e*/ { "pop", FALSE, LONG, op1(Ri), 0 },
|
|
/*5f*/ { "pop", FALSE, LONG, op1(Ri), 0 },
|
|
|
|
/*60*/ { "pusha", FALSE, LONG, 0, 0 },
|
|
/*61*/ { "popa", FALSE, LONG, 0, 0 },
|
|
/*62*/ { "bound", TRUE, LONG, op2(E, R), 0 },
|
|
/*63*/ { "arpl", TRUE, NONE, op2(Rw,Ew), 0 },
|
|
|
|
/*64*/ { "", FALSE, NONE, 0, 0 },
|
|
/*65*/ { "", FALSE, NONE, 0, 0 },
|
|
/*66*/ { "", FALSE, NONE, 0, 0 },
|
|
/*67*/ { "", FALSE, NONE, 0, 0 },
|
|
|
|
/*68*/ { "push", FALSE, LONG, op1(I), 0 },
|
|
/*69*/ { "imul", TRUE, LONG, op3(I,E,R), 0 },
|
|
/*6a*/ { "push", FALSE, LONG, op1(Ibs), 0 },
|
|
/*6b*/ { "imul", TRUE, LONG, op3(Ibs,E,R),0 },
|
|
/*6c*/ { "ins", FALSE, BYTE, op2(DX, DI), 0 },
|
|
/*6d*/ { "ins", FALSE, LONG, op2(DX, DI), 0 },
|
|
/*6e*/ { "outs", FALSE, BYTE, op2(SI, DX), 0 },
|
|
/*6f*/ { "outs", FALSE, LONG, op2(SI, DX), 0 },
|
|
|
|
/*70*/ { "jo", FALSE, NONE, op1(Db), 0 },
|
|
/*71*/ { "jno", FALSE, NONE, op1(Db), 0 },
|
|
/*72*/ { "jb", FALSE, NONE, op1(Db), 0 },
|
|
/*73*/ { "jnb", FALSE, NONE, op1(Db), 0 },
|
|
/*74*/ { "jz", FALSE, NONE, op1(Db), 0 },
|
|
/*75*/ { "jnz", FALSE, NONE, op1(Db), 0 },
|
|
/*76*/ { "jbe", FALSE, NONE, op1(Db), 0 },
|
|
/*77*/ { "jnbe", FALSE, NONE, op1(Db), 0 },
|
|
|
|
/*78*/ { "js", FALSE, NONE, op1(Db), 0 },
|
|
/*79*/ { "jns", FALSE, NONE, op1(Db), 0 },
|
|
/*7a*/ { "jp", FALSE, NONE, op1(Db), 0 },
|
|
/*7b*/ { "jnp", FALSE, NONE, op1(Db), 0 },
|
|
/*7c*/ { "jl", FALSE, NONE, op1(Db), 0 },
|
|
/*7d*/ { "jnl", FALSE, NONE, op1(Db), 0 },
|
|
/*7e*/ { "jle", FALSE, NONE, op1(Db), 0 },
|
|
/*7f*/ { "jnle", FALSE, NONE, op1(Db), 0 },
|
|
|
|
/*80*/ { "", TRUE, BYTE, op2(I, E), db_Grp1 },
|
|
/*81*/ { "", TRUE, LONG, op2(I, E), db_Grp1 },
|
|
/*82*/ { "", TRUE, BYTE, op2(I, E), db_Grp1 },
|
|
/*83*/ { "", TRUE, LONG, op2(Ibs,E), db_Grp1 },
|
|
/*84*/ { "test", TRUE, BYTE, op2(R, E), 0 },
|
|
/*85*/ { "test", TRUE, LONG, op2(R, E), 0 },
|
|
/*86*/ { "xchg", TRUE, BYTE, op2(R, E), 0 },
|
|
/*87*/ { "xchg", TRUE, LONG, op2(R, E), 0 },
|
|
|
|
/*88*/ { "mov", TRUE, BYTE, op2(R, E), 0 },
|
|
/*89*/ { "mov", TRUE, LONG, op2(R, E), 0 },
|
|
/*8a*/ { "mov", TRUE, BYTE, op2(E, R), 0 },
|
|
/*8b*/ { "mov", TRUE, LONG, op2(E, R), 0 },
|
|
/*8c*/ { "mov", TRUE, NONE, op2(S, Ew), 0 },
|
|
/*8d*/ { "lea", TRUE, LONG, op2(E, R), 0 },
|
|
/*8e*/ { "mov", TRUE, NONE, op2(Ew, S), 0 },
|
|
/*8f*/ { "pop", TRUE, LONG, op1(E), 0 },
|
|
|
|
/*90*/ { "nop", FALSE, NONE, 0, 0 },
|
|
/*91*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
|
|
/*92*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
|
|
/*93*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
|
|
/*94*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
|
|
/*95*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
|
|
/*96*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
|
|
/*97*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
|
|
|
|
/*98*/ { "cbw", FALSE, SDEP, 0, "cwde" }, /* cbw/cwde */
|
|
/*99*/ { "cwd", FALSE, SDEP, 0, "cdq" }, /* cwd/cdq */
|
|
/*9a*/ { "lcall", FALSE, NONE, op1(OS), 0 },
|
|
/*9b*/ { "wait", FALSE, NONE, 0, 0 },
|
|
/*9c*/ { "pushf", FALSE, LONG, 0, 0 },
|
|
/*9d*/ { "popf", FALSE, LONG, 0, 0 },
|
|
/*9e*/ { "sahf", FALSE, NONE, 0, 0 },
|
|
/*9f*/ { "lahf", FALSE, NONE, 0, 0 },
|
|
|
|
/*a0*/ { "mov", FALSE, BYTE, op2(O, A), 0 },
|
|
/*a1*/ { "mov", FALSE, LONG, op2(O, A), 0 },
|
|
/*a2*/ { "mov", FALSE, BYTE, op2(A, O), 0 },
|
|
/*a3*/ { "mov", FALSE, LONG, op2(A, O), 0 },
|
|
/*a4*/ { "movs", FALSE, BYTE, op2(SI,DI), 0 },
|
|
/*a5*/ { "movs", FALSE, LONG, op2(SI,DI), 0 },
|
|
/*a6*/ { "cmps", FALSE, BYTE, op2(SI,DI), 0 },
|
|
/*a7*/ { "cmps", FALSE, LONG, op2(SI,DI), 0 },
|
|
|
|
/*a8*/ { "test", FALSE, BYTE, op2(I, A), 0 },
|
|
/*a9*/ { "test", FALSE, LONG, op2(I, A), 0 },
|
|
/*aa*/ { "stos", FALSE, BYTE, op1(DI), 0 },
|
|
/*ab*/ { "stos", FALSE, LONG, op1(DI), 0 },
|
|
/*ac*/ { "lods", FALSE, BYTE, op1(SI), 0 },
|
|
/*ad*/ { "lods", FALSE, LONG, op1(SI), 0 },
|
|
/*ae*/ { "scas", FALSE, BYTE, op1(SI), 0 },
|
|
/*af*/ { "scas", FALSE, LONG, op1(SI), 0 },
|
|
|
|
/*b0*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
|
|
/*b1*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
|
|
/*b2*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
|
|
/*b3*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
|
|
/*b4*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
|
|
/*b5*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
|
|
/*b6*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
|
|
/*b7*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
|
|
|
|
/*b8*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
|
|
/*b9*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
|
|
/*ba*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
|
|
/*bb*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
|
|
/*bc*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
|
|
/*bd*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
|
|
/*be*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
|
|
/*bf*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
|
|
|
|
/*c0*/ { "", TRUE, BYTE, op2(Ib, E), db_Grp2 },
|
|
/*c1*/ { "", TRUE, LONG, op2(Ib, E), db_Grp2 },
|
|
/*c2*/ { "ret", FALSE, NONE, op1(Iw), 0 },
|
|
/*c3*/ { "ret", FALSE, NONE, 0, 0 },
|
|
/*c4*/ { "les", TRUE, LONG, op2(E, R), 0 },
|
|
/*c5*/ { "lds", TRUE, LONG, op2(E, R), 0 },
|
|
/*c6*/ { "mov", TRUE, BYTE, op2(I, E), 0 },
|
|
/*c7*/ { "mov", TRUE, LONG, op2(I, E), 0 },
|
|
|
|
/*c8*/ { "enter", FALSE, NONE, op2(Iw, Ib), 0 },
|
|
/*c9*/ { "leave", FALSE, NONE, 0, 0 },
|
|
/*ca*/ { "lret", FALSE, NONE, op1(Iw), 0 },
|
|
/*cb*/ { "lret", FALSE, NONE, 0, 0 },
|
|
/*cc*/ { "int", FALSE, NONE, op1(o3), 0 },
|
|
/*cd*/ { "int", FALSE, NONE, op1(Ib), 0 },
|
|
/*ce*/ { "into", FALSE, NONE, 0, 0 },
|
|
/*cf*/ { "iret", FALSE, NONE, 0, 0 },
|
|
|
|
/*d0*/ { "", TRUE, BYTE, op2(o1, E), db_Grp2 },
|
|
/*d1*/ { "", TRUE, LONG, op2(o1, E), db_Grp2 },
|
|
/*d2*/ { "", TRUE, BYTE, op2(CL, E), db_Grp2 },
|
|
/*d3*/ { "", TRUE, LONG, op2(CL, E), db_Grp2 },
|
|
/*d4*/ { "aam", FALSE, NONE, op1(Iba), 0 },
|
|
/*d5*/ { "aad", FALSE, NONE, op1(Iba), 0 },
|
|
/*d6*/ { ".byte\t0xd6", FALSE, NONE, 0, 0 },
|
|
/*d7*/ { "xlat", FALSE, BYTE, op1(BX), 0 },
|
|
|
|
/*d8*/ { "", TRUE, NONE, 0, db_Esc8 },
|
|
/*d9*/ { "", TRUE, NONE, 0, db_Esc9 },
|
|
/*da*/ { "", TRUE, NONE, 0, db_Esca },
|
|
/*db*/ { "", TRUE, NONE, 0, db_Escb },
|
|
/*dc*/ { "", TRUE, NONE, 0, db_Escc },
|
|
/*dd*/ { "", TRUE, NONE, 0, db_Escd },
|
|
/*de*/ { "", TRUE, NONE, 0, db_Esce },
|
|
/*df*/ { "", TRUE, NONE, 0, db_Escf },
|
|
|
|
/*e0*/ { "loopne",FALSE, NONE, op1(Db), 0 },
|
|
/*e1*/ { "loope", FALSE, NONE, op1(Db), 0 },
|
|
/*e2*/ { "loop", FALSE, NONE, op1(Db), 0 },
|
|
/*e3*/ { "jcxz", FALSE, SDEP, op1(Db), "jecxz" },
|
|
/*e4*/ { "in", FALSE, BYTE, op2(Ib, A), 0 },
|
|
/*e5*/ { "in", FALSE, LONG, op2(Ib, A) , 0 },
|
|
/*e6*/ { "out", FALSE, BYTE, op2(A, Ib), 0 },
|
|
/*e7*/ { "out", FALSE, LONG, op2(A, Ib) , 0 },
|
|
|
|
/*e8*/ { "call", FALSE, NONE, op1(Dl), 0 },
|
|
/*e9*/ { "jmp", FALSE, NONE, op1(Dl), 0 },
|
|
/*ea*/ { "ljmp", FALSE, NONE, op1(OS), 0 },
|
|
/*eb*/ { "jmp", FALSE, NONE, op1(Db), 0 },
|
|
/*ec*/ { "in", FALSE, BYTE, op2(DX, A), 0 },
|
|
/*ed*/ { "in", FALSE, LONG, op2(DX, A) , 0 },
|
|
/*ee*/ { "out", FALSE, BYTE, op2(A, DX), 0 },
|
|
/*ef*/ { "out", FALSE, LONG, op2(A, DX) , 0 },
|
|
|
|
/*f0*/ { "", FALSE, NONE, 0, 0 },
|
|
/*f1*/ { ".byte\t0xf1", FALSE, NONE, 0, 0 },
|
|
/*f2*/ { "", FALSE, NONE, 0, 0 },
|
|
/*f3*/ { "", FALSE, NONE, 0, 0 },
|
|
/*f4*/ { "hlt", FALSE, NONE, 0, 0 },
|
|
/*f5*/ { "cmc", FALSE, NONE, 0, 0 },
|
|
/*f6*/ { "", TRUE, BYTE, 0, db_Grp3 },
|
|
/*f7*/ { "", TRUE, LONG, 0, db_Grp3 },
|
|
|
|
/*f8*/ { "clc", FALSE, NONE, 0, 0 },
|
|
/*f9*/ { "stc", FALSE, NONE, 0, 0 },
|
|
/*fa*/ { "cli", FALSE, NONE, 0, 0 },
|
|
/*fb*/ { "sti", FALSE, NONE, 0, 0 },
|
|
/*fc*/ { "cld", FALSE, NONE, 0, 0 },
|
|
/*fd*/ { "std", FALSE, NONE, 0, 0 },
|
|
/*fe*/ { "", TRUE, NONE, 0, db_Grp4 },
|
|
/*ff*/ { "", TRUE, NONE, 0, db_Grp5 },
|
|
};
|
|
|
|
static const struct inst db_bad_inst =
|
|
{ "???", FALSE, NONE, 0, 0 }
|
|
;
|
|
|
|
#define f_mod(byte) ((byte)>>6)
|
|
#define f_reg(byte) (((byte)>>3)&0x7)
|
|
#define f_rm(byte) ((byte)&0x7)
|
|
|
|
#define sib_ss(byte) ((byte)>>6)
|
|
#define sib_index(byte) (((byte)>>3)&0x7)
|
|
#define sib_base(byte) ((byte)&0x7)
|
|
|
|
struct i_addr {
|
|
int is_reg; /* if reg, reg number is in 'disp' */
|
|
int disp;
|
|
const char * base;
|
|
const char * index;
|
|
int ss;
|
|
};
|
|
|
|
static const char * const db_index_reg_16[8] = {
|
|
"%bx,%si",
|
|
"%bx,%di",
|
|
"%bp,%si",
|
|
"%bp,%di",
|
|
"%si",
|
|
"%di",
|
|
"%bp",
|
|
"%bx"
|
|
};
|
|
|
|
static const char * const db_reg[3][8] = {
|
|
{ "%al", "%cl", "%dl", "%bl", "%ah", "%ch", "%dh", "%bh" },
|
|
{ "%ax", "%cx", "%dx", "%bx", "%sp", "%bp", "%si", "%di" },
|
|
{ "%eax", "%ecx", "%edx", "%ebx", "%esp", "%ebp", "%esi", "%edi" }
|
|
};
|
|
|
|
static const char * const db_seg_reg[8] = {
|
|
"%es", "%cs", "%ss", "%ds", "%fs", "%gs", "", ""
|
|
};
|
|
|
|
/*
|
|
* lengths for size attributes
|
|
*/
|
|
static const int db_lengths[] = {
|
|
1, /* BYTE */
|
|
2, /* WORD */
|
|
4, /* LONG */
|
|
8, /* QUAD */
|
|
4, /* SNGL */
|
|
8, /* DBLR */
|
|
10, /* EXTR */
|
|
};
|
|
|
|
#define get_value_inc(result, loc, size, is_signed) \
|
|
result = db_get_value((loc), (size), (is_signed)); \
|
|
(loc) += (size);
|
|
|
|
static db_addr_t
|
|
db_disasm_esc(db_addr_t loc, int inst, int short_addr,
|
|
int size, const char *seg);
|
|
static void db_print_address(const char *seg, int size,
|
|
struct i_addr *addrp);
|
|
static db_addr_t
|
|
db_read_address(db_addr_t loc, int short_addr, int regmodrm,
|
|
struct i_addr *addrp);
|
|
|
|
/*
|
|
* Read address at location and return updated location.
|
|
*/
|
|
static db_addr_t
|
|
db_read_address(loc, short_addr, regmodrm, addrp)
|
|
db_addr_t loc;
|
|
int short_addr;
|
|
int regmodrm;
|
|
struct i_addr * addrp; /* out */
|
|
{
|
|
int mod, rm, sib, index, disp;
|
|
|
|
mod = f_mod(regmodrm);
|
|
rm = f_rm(regmodrm);
|
|
|
|
if (mod == 3) {
|
|
addrp->is_reg = TRUE;
|
|
addrp->disp = rm;
|
|
return (loc);
|
|
}
|
|
addrp->is_reg = FALSE;
|
|
addrp->index = 0;
|
|
|
|
if (short_addr) {
|
|
addrp->index = 0;
|
|
addrp->ss = 0;
|
|
switch (mod) {
|
|
case 0:
|
|
if (rm == 6) {
|
|
get_value_inc(disp, loc, 2, FALSE);
|
|
addrp->disp = disp;
|
|
addrp->base = 0;
|
|
}
|
|
else {
|
|
addrp->disp = 0;
|
|
addrp->base = db_index_reg_16[rm];
|
|
}
|
|
break;
|
|
case 1:
|
|
get_value_inc(disp, loc, 1, TRUE);
|
|
disp &= 0xFFFF;
|
|
addrp->disp = disp;
|
|
addrp->base = db_index_reg_16[rm];
|
|
break;
|
|
case 2:
|
|
get_value_inc(disp, loc, 2, FALSE);
|
|
addrp->disp = disp;
|
|
addrp->base = db_index_reg_16[rm];
|
|
break;
|
|
}
|
|
}
|
|
else {
|
|
if (mod != 3 && rm == 4) {
|
|
get_value_inc(sib, loc, 1, FALSE);
|
|
rm = sib_base(sib);
|
|
index = sib_index(sib);
|
|
if (index != 4)
|
|
addrp->index = db_reg[LONG][index];
|
|
addrp->ss = sib_ss(sib);
|
|
}
|
|
|
|
switch (mod) {
|
|
case 0:
|
|
if (rm == 5) {
|
|
get_value_inc(addrp->disp, loc, 4, FALSE);
|
|
addrp->base = 0;
|
|
}
|
|
else {
|
|
addrp->disp = 0;
|
|
addrp->base = db_reg[LONG][rm];
|
|
}
|
|
break;
|
|
|
|
case 1:
|
|
get_value_inc(disp, loc, 1, TRUE);
|
|
addrp->disp = disp;
|
|
addrp->base = db_reg[LONG][rm];
|
|
break;
|
|
|
|
case 2:
|
|
get_value_inc(disp, loc, 4, FALSE);
|
|
addrp->disp = disp;
|
|
addrp->base = db_reg[LONG][rm];
|
|
break;
|
|
}
|
|
}
|
|
return (loc);
|
|
}
|
|
|
|
static void
|
|
db_print_address(seg, size, addrp)
|
|
const char * seg;
|
|
int size;
|
|
struct i_addr * addrp;
|
|
{
|
|
if (addrp->is_reg) {
|
|
db_printf("%s", db_reg[size][addrp->disp]);
|
|
return;
|
|
}
|
|
|
|
if (seg) {
|
|
db_printf("%s:", seg);
|
|
}
|
|
|
|
db_printsym((db_addr_t)addrp->disp, DB_STGY_ANY);
|
|
if (addrp->base != 0 || addrp->index != 0) {
|
|
db_printf("(");
|
|
if (addrp->base)
|
|
db_printf("%s", addrp->base);
|
|
if (addrp->index)
|
|
db_printf(",%s,%d", addrp->index, 1<<addrp->ss);
|
|
db_printf(")");
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Disassemble floating-point ("escape") instruction
|
|
* and return updated location.
|
|
*/
|
|
static db_addr_t
|
|
db_disasm_esc(loc, inst, short_addr, size, seg)
|
|
db_addr_t loc;
|
|
int inst;
|
|
int short_addr;
|
|
int size;
|
|
const char * seg;
|
|
{
|
|
int regmodrm;
|
|
const struct finst * fp;
|
|
int mod;
|
|
struct i_addr address;
|
|
const char * name;
|
|
|
|
get_value_inc(regmodrm, loc, 1, FALSE);
|
|
fp = &db_Esc_inst[inst - 0xd8][f_reg(regmodrm)];
|
|
mod = f_mod(regmodrm);
|
|
if (mod != 3) {
|
|
if (*fp->f_name == '\0') {
|
|
db_printf("<bad instruction>");
|
|
return (loc);
|
|
}
|
|
/*
|
|
* Normal address modes.
|
|
*/
|
|
loc = db_read_address(loc, short_addr, regmodrm, &address);
|
|
db_printf("%s", fp->f_name);
|
|
switch(fp->f_size) {
|
|
case SNGL:
|
|
db_printf("s");
|
|
break;
|
|
case DBLR:
|
|
db_printf("l");
|
|
break;
|
|
case EXTR:
|
|
db_printf("t");
|
|
break;
|
|
case WORD:
|
|
db_printf("s");
|
|
break;
|
|
case LONG:
|
|
db_printf("l");
|
|
break;
|
|
case QUAD:
|
|
db_printf("q");
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
db_printf("\t");
|
|
db_print_address(seg, BYTE, &address);
|
|
}
|
|
else {
|
|
/*
|
|
* 'reg-reg' - special formats
|
|
*/
|
|
switch (fp->f_rrmode) {
|
|
case op2(ST,STI):
|
|
name = (fp->f_rrname) ? fp->f_rrname : fp->f_name;
|
|
db_printf("%s\t%%st,%%st(%d)",name,f_rm(regmodrm));
|
|
break;
|
|
case op2(STI,ST):
|
|
name = (fp->f_rrname) ? fp->f_rrname : fp->f_name;
|
|
db_printf("%s\t%%st(%d),%%st",name, f_rm(regmodrm));
|
|
break;
|
|
case op1(STI):
|
|
name = (fp->f_rrname) ? fp->f_rrname : fp->f_name;
|
|
db_printf("%s\t%%st(%d)",name, f_rm(regmodrm));
|
|
break;
|
|
case op1(X):
|
|
name = ((const char * const *)fp->f_rrname)[f_rm(regmodrm)];
|
|
if (*name == '\0')
|
|
goto bad;
|
|
db_printf("%s", name);
|
|
break;
|
|
case op1(XA):
|
|
name = ((const char * const *)fp->f_rrname)[f_rm(regmodrm)];
|
|
if (*name == '\0')
|
|
goto bad;
|
|
db_printf("%s\t%%ax", name);
|
|
break;
|
|
default:
|
|
bad:
|
|
db_printf("<bad instruction>");
|
|
break;
|
|
}
|
|
}
|
|
|
|
return (loc);
|
|
}
|
|
|
|
/*
|
|
* Disassemble instruction at 'loc'. 'altfmt' specifies an
|
|
* (optional) alternate format. Return address of start of
|
|
* next instruction.
|
|
*/
|
|
db_addr_t
|
|
db_disasm(loc, altfmt)
|
|
db_addr_t loc;
|
|
boolean_t altfmt;
|
|
{
|
|
int inst;
|
|
int size;
|
|
int short_addr;
|
|
const char * seg;
|
|
const struct inst * ip;
|
|
const char * i_name;
|
|
int i_size;
|
|
int i_mode;
|
|
int regmodrm = 0;
|
|
boolean_t first;
|
|
int displ;
|
|
int prefix;
|
|
int imm;
|
|
int imm2;
|
|
int len;
|
|
struct i_addr address;
|
|
|
|
get_value_inc(inst, loc, 1, FALSE);
|
|
short_addr = FALSE;
|
|
size = LONG;
|
|
seg = 0;
|
|
|
|
/*
|
|
* Get prefixes
|
|
*/
|
|
prefix = TRUE;
|
|
do {
|
|
switch (inst) {
|
|
case 0x66: /* data16 */
|
|
size = WORD;
|
|
break;
|
|
case 0x67:
|
|
short_addr = TRUE;
|
|
break;
|
|
case 0x26:
|
|
seg = "%es";
|
|
break;
|
|
case 0x36:
|
|
seg = "%ss";
|
|
break;
|
|
case 0x2e:
|
|
seg = "%cs";
|
|
break;
|
|
case 0x3e:
|
|
seg = "%ds";
|
|
break;
|
|
case 0x64:
|
|
seg = "%fs";
|
|
break;
|
|
case 0x65:
|
|
seg = "%gs";
|
|
break;
|
|
case 0xf0:
|
|
db_printf("lock ");
|
|
break;
|
|
case 0xf2:
|
|
db_printf("repne ");
|
|
break;
|
|
case 0xf3:
|
|
db_printf("repe "); /* XXX repe VS rep */
|
|
break;
|
|
default:
|
|
prefix = FALSE;
|
|
break;
|
|
}
|
|
if (prefix) {
|
|
get_value_inc(inst, loc, 1, FALSE);
|
|
}
|
|
} while (prefix);
|
|
|
|
if (inst >= 0xd8 && inst <= 0xdf) {
|
|
loc = db_disasm_esc(loc, inst, short_addr, size, seg);
|
|
db_printf("\n");
|
|
return (loc);
|
|
}
|
|
|
|
if (inst == 0x0f) {
|
|
get_value_inc(inst, loc, 1, FALSE);
|
|
ip = db_inst_0f[inst>>4];
|
|
if (ip == 0) {
|
|
ip = &db_bad_inst;
|
|
}
|
|
else {
|
|
ip = &ip[inst&0xf];
|
|
}
|
|
}
|
|
else
|
|
ip = &db_inst_table[inst];
|
|
|
|
if (ip->i_has_modrm) {
|
|
get_value_inc(regmodrm, loc, 1, FALSE);
|
|
loc = db_read_address(loc, short_addr, regmodrm, &address);
|
|
}
|
|
|
|
i_name = ip->i_name;
|
|
i_size = ip->i_size;
|
|
i_mode = ip->i_mode;
|
|
|
|
if (ip->i_extra == db_Grp1 || ip->i_extra == db_Grp2 ||
|
|
ip->i_extra == db_Grp6 || ip->i_extra == db_Grp7 ||
|
|
ip->i_extra == db_Grp8 || ip->i_extra == db_Grp9) {
|
|
i_name = ((const char * const *)ip->i_extra)[f_reg(regmodrm)];
|
|
}
|
|
else if (ip->i_extra == db_Grp3) {
|
|
ip = ip->i_extra;
|
|
ip = &ip[f_reg(regmodrm)];
|
|
i_name = ip->i_name;
|
|
i_mode = ip->i_mode;
|
|
}
|
|
else if (ip->i_extra == db_Grp4 || ip->i_extra == db_Grp5) {
|
|
ip = ip->i_extra;
|
|
ip = &ip[f_reg(regmodrm)];
|
|
i_name = ip->i_name;
|
|
i_mode = ip->i_mode;
|
|
i_size = ip->i_size;
|
|
}
|
|
|
|
if (i_size == SDEP) {
|
|
if (size == WORD)
|
|
db_printf("%s", i_name);
|
|
else
|
|
db_printf("%s", (const char *)ip->i_extra);
|
|
}
|
|
else {
|
|
db_printf("%s", i_name);
|
|
if (i_size != NONE) {
|
|
if (i_size == BYTE) {
|
|
db_printf("b");
|
|
size = BYTE;
|
|
}
|
|
else if (i_size == WORD) {
|
|
db_printf("w");
|
|
size = WORD;
|
|
}
|
|
else if (size == WORD)
|
|
db_printf("w");
|
|
else
|
|
db_printf("l");
|
|
}
|
|
}
|
|
db_printf("\t");
|
|
for (first = TRUE;
|
|
i_mode != 0;
|
|
i_mode >>= 8, first = FALSE)
|
|
{
|
|
if (!first)
|
|
db_printf(",");
|
|
|
|
switch (i_mode & 0xFF) {
|
|
|
|
case E:
|
|
db_print_address(seg, size, &address);
|
|
break;
|
|
|
|
case Eind:
|
|
db_printf("*");
|
|
db_print_address(seg, size, &address);
|
|
break;
|
|
|
|
case El:
|
|
db_print_address(seg, LONG, &address);
|
|
break;
|
|
|
|
case Ew:
|
|
db_print_address(seg, WORD, &address);
|
|
break;
|
|
|
|
case Eb:
|
|
db_print_address(seg, BYTE, &address);
|
|
break;
|
|
|
|
case R:
|
|
db_printf("%s", db_reg[size][f_reg(regmodrm)]);
|
|
break;
|
|
|
|
case Rw:
|
|
db_printf("%s", db_reg[WORD][f_reg(regmodrm)]);
|
|
break;
|
|
|
|
case Ri:
|
|
db_printf("%s", db_reg[size][f_rm(inst)]);
|
|
break;
|
|
|
|
case Ril:
|
|
db_printf("%s", db_reg[LONG][f_rm(inst)]);
|
|
break;
|
|
|
|
case S:
|
|
db_printf("%s", db_seg_reg[f_reg(regmodrm)]);
|
|
break;
|
|
|
|
case Si:
|
|
db_printf("%s", db_seg_reg[f_reg(inst)]);
|
|
break;
|
|
|
|
case A:
|
|
db_printf("%s", db_reg[size][0]); /* acc */
|
|
break;
|
|
|
|
case BX:
|
|
if (seg)
|
|
db_printf("%s:", seg);
|
|
db_printf("(%s)", short_addr ? "%bx" : "%ebx");
|
|
break;
|
|
|
|
case CL:
|
|
db_printf("%%cl");
|
|
break;
|
|
|
|
case DX:
|
|
db_printf("%%dx");
|
|
break;
|
|
|
|
case SI:
|
|
if (seg)
|
|
db_printf("%s:", seg);
|
|
db_printf("(%s)", short_addr ? "%si" : "%esi");
|
|
break;
|
|
|
|
case DI:
|
|
db_printf("%%es:(%s)", short_addr ? "%di" : "%edi");
|
|
break;
|
|
|
|
case CR:
|
|
db_printf("%%cr%d", f_reg(regmodrm));
|
|
break;
|
|
|
|
case DR:
|
|
db_printf("%%dr%d", f_reg(regmodrm));
|
|
break;
|
|
|
|
case TR:
|
|
db_printf("%%tr%d", f_reg(regmodrm));
|
|
break;
|
|
|
|
case I:
|
|
len = db_lengths[size];
|
|
get_value_inc(imm, loc, len, FALSE);
|
|
db_printf("$%#r", imm);
|
|
break;
|
|
|
|
case Is:
|
|
len = db_lengths[size];
|
|
get_value_inc(imm, loc, len, FALSE);
|
|
db_printf("$%+#r", imm);
|
|
break;
|
|
|
|
case Ib:
|
|
get_value_inc(imm, loc, 1, FALSE);
|
|
db_printf("$%#r", imm);
|
|
break;
|
|
|
|
case Iba:
|
|
get_value_inc(imm, loc, 1, FALSE);
|
|
if (imm != 0x0a)
|
|
db_printf("$%#r", imm);
|
|
break;
|
|
|
|
case Ibs:
|
|
get_value_inc(imm, loc, 1, TRUE);
|
|
if (size == WORD)
|
|
imm &= 0xFFFF;
|
|
db_printf("$%+#r", imm);
|
|
break;
|
|
|
|
case Iw:
|
|
get_value_inc(imm, loc, 2, FALSE);
|
|
db_printf("$%#r", imm);
|
|
break;
|
|
|
|
case O:
|
|
len = (short_addr ? 2 : 4);
|
|
get_value_inc(displ, loc, len, FALSE);
|
|
if (seg)
|
|
db_printf("%s:%+#r",seg, displ);
|
|
else
|
|
db_printsym((db_addr_t)displ, DB_STGY_ANY);
|
|
break;
|
|
|
|
case Db:
|
|
get_value_inc(displ, loc, 1, TRUE);
|
|
displ += loc;
|
|
if (size == WORD)
|
|
displ &= 0xFFFF;
|
|
db_printsym((db_addr_t)displ, DB_STGY_XTRN);
|
|
break;
|
|
|
|
case Dl:
|
|
len = db_lengths[size];
|
|
get_value_inc(displ, loc, len, FALSE);
|
|
displ += loc;
|
|
if (size == WORD)
|
|
displ &= 0xFFFF;
|
|
db_printsym((db_addr_t)displ, DB_STGY_XTRN);
|
|
break;
|
|
|
|
case o1:
|
|
db_printf("$1");
|
|
break;
|
|
|
|
case o3:
|
|
db_printf("$3");
|
|
break;
|
|
|
|
case OS:
|
|
len = db_lengths[size];
|
|
get_value_inc(imm, loc, len, FALSE); /* offset */
|
|
get_value_inc(imm2, loc, 2, FALSE); /* segment */
|
|
db_printf("$%#r,%#r", imm2, imm);
|
|
break;
|
|
}
|
|
}
|
|
db_printf("\n");
|
|
return (loc);
|
|
}
|