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db_disasm.c

/*
 * Mach Operating System
 * Copyright (c) 1991,1990 Carnegie Mellon University
 * All Rights Reserved.
 *
 * Permission to use, copy, modify and distribute this software and its
 * documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 *
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 *
 * Carnegie Mellon requests users of this software to return to
 *
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 *
 * any improvements or extensions that they make and grant Carnegie Mellon
 * the rights to redistribute these changes.
 */
/*
 * HISTORY
 *
 * Revision 2.6  92/01/03  20:05:00  dbg
 *    Add a switch to disassemble 16-bit code.
 *    Fix spelling of 'lods' opcodes.
 *    [91/10/30            dbg]
 *
 * Revision 2.5  91/10/09  16:05:58  af
 *    Supported disassemble of non current task by passing task parameter.
 *    [91/08/29            tak]
 *
 * Revision 2.4  91/05/14  16:05:04  mrt
 *    Correcting copyright
 *
 * Revision 2.3  91/02/05  17:11:03  mrt
 *    Changed to new Mach copyright
 *    [91/02/01  17:31:03  mrt]
 *
 * Revision 2.2  90/08/27  21:55:56  dbg
 *    Fix register operand for move to/from control/test/debug
 *    register instructions.  Add i486 instructions.
 *    [90/08/27            dbg]
 *
 *    Import db_sym.h.  Print instruction displacements in
 *    current radix (signed).  Change calling sequence of
 *    db_disasm.
 *    [90/08/21            dbg]
 *    Fix includes.
 *    [90/08/08            dbg]
 *    Created.
 *    [90/07/25            dbg]
 *
 */

/*
 * Instruction disassembler.
 */

#include "debugger.h"

#ifdef __i386__

/*
 * Switch to disassemble 16-bit code.
 */
static BOOL db_disasm_16 = FALSE;

/*
 * Flag to indicate whether we need to display instruction,
 * or whether we just need to know the address of the next
 * instruction.
 */
static BOOL db_display = FALSE;

/*
 * Size attributes
 */
#define     BYTE  0
#define     WORD  1
#define     LONG  2
#define     QUAD  3
#define     SNGL  4
#define     DBLR  5
#define     EXTR  6
#define     SDEP  7
#define     NONE  8

/*
 * Addressing modes
 */
#define     E     1                 /* general effective address */
#define     Eind  2                 /* indirect address (jump, call) */
#define     Ew    3                 /* address, word size */
#define     Eb    4                 /* address, byte size */
#define     R     5                 /* register, in 'reg' field */
#define     Rw    6                 /* word register, in 'reg' field */
#define     Ri    7                 /* register in instruction */
#define     S     8                 /* segment reg, in 'reg' field */
#define     Si    9                 /* segment reg, in instruction */
#define     A     10                /* accumulator */
#define     BX    11                /* (bx) */
#define     CL    12                /* cl, for shifts */
#define     DX    13                /* dx, for IO */
#define     SI    14                /* si */
#define     DI    15                /* di */
#define     CR    16                /* control register */
#define     DR    17                /* debug register */
#define     TR    18                /* test register */
#define     I     19                /* immediate, unsigned */
#define     Is    20                /* immediate, signed */
#define     Ib    21                /* byte immediate, unsigned */
#define     Ibs   22                /* byte immediate, signed */
#define     Iw    23                /* word immediate, unsigned */
#define     Il    24                /* long immediate */
#define     O     25                /* direct address */
#define     Db    26                /* byte displacement from EIP */
#define     Dl    27                /* long displacement from EIP */
#define     o1    28                /* constant 1 */
#define     o3    29                /* constant 3 */
#define     OS    30                /* immediate offset/segment */
#define     ST    31                /* FP stack top */
#define     STI   32                /* FP stack */
#define     X     33                /* extended FP op */
#define     XA    34                /* for 'fstcw %ax' */
#define     MX    35                /* special register (MMX reg %mm0-7) */
#define     EMX   36                /* special register (MMX reg %mm0-7) */
#define     XMM   37                /* special register (floating point reg %xmm0-7) */
#define     EXMM  38                /* special register (floating point reg %xmm0-7) */

struct inst {
      const char *i_name;           /* name */
      short       i_has_modrm;      /* has regmodrm byte */
      short       i_size;           /* operand size */
      int         i_mode;           /* addressing modes */
      const char *i_extra;          /* pointer to extra opcode table */
};

#define     op1(x)            (x)
#define     op2(x,y)    ((x)|((y)<<8))
#define     op3(x,y,z)  ((x)|((y)<<8)|((z)<<16))

struct finst {
      const char *f_name;           /* name for memory instruction */
      int         f_size;           /* size for memory instruction */
      int         f_rrmode;         /* mode for rr instruction */
      const char *f_rrname;         /* name for rr instruction
                                 (or pointer to table) */
};

static const char * const db_Grp6[] = {
      "sldt",
      "str",
      "lldt",
      "ltr",
      "verr",
      "verw",
      "",
      ""
};

static const char * const db_Grp7[] = {
      "sgdt",
      "sidt",
      "lgdt",
      "lidt",
      "smsw",
      "",
      "lmsw",
      "invlpg"
};

static const char * const db_Grp8[] = {
      "",
      "",
      "",
      "",
      "bt",
      "bts",
      "btr",
      "btc"
};

static const char * const db_Grp10[] = {
      "(bad)",
      "(bad)",
      "psrlw",
      "(bad)",
      "psraw",
      "(bad)",
      "psllw",
      "(bad)"
};

static const char * const db_Grp11[] = {
      "(bad)",
      "(bad)",
      "psrld",
      "(bad)",
      "psrad",
      "(bad)",
      "pslld",
      "(bad)"
};

static const char * const db_Grp12[] = {
      "(bad)",
      "(bad)",
      "psrlq",
      "(bad)",
      "psraq",
      "(bad)",
      "psllq",
      "(bad)"
};

static const struct inst db_inst_0f0x[] = {
/*00*/      { "",    TRUE,  NONE,  op1(Ew),     (const char *)db_Grp6 },
/*01*/      { "",    TRUE,  NONE,  op1(Ew),     (const char *)db_Grp7 },
/*02*/      { "lar",   TRUE,  LONG,  op2(E,R),    0 },
/*03*/      { "lsl",   TRUE,  LONG,  op2(E,R),    0 },
/*04*/      { "",      FALSE, NONE,  0,         0 },
/*05*/      { "",      FALSE, NONE,  0,         0 },
/*06*/      { "clts",  FALSE, NONE,  0,         0 },
/*07*/      { "",      FALSE, NONE,  0,         0 },

/*08*/      { "invd",  FALSE, NONE,  0,         0 },
/*09*/      { "wbinvd",FALSE, NONE,  0,         0 },
/*0a*/      { "",      FALSE, NONE,  0,         0 },
/*0b*/      { "",      FALSE, NONE,  0,         0 },
/*0c*/      { "",      FALSE, NONE,  0,         0 },
/*0d*/      { "",      FALSE, NONE,  0,         0 },
/*0e*/      { "",      FALSE, NONE,  0,         0 },
/*0f*/      { "",      FALSE, NONE,  0,         0 },
};

static const struct inst db_inst_0f2x[] = {
/*20*/      { "mov",   TRUE,  LONG,  op2(CR,E),   0 }, /* use E for reg */
/*21*/      { "mov",   TRUE,  LONG,  op2(DR,E),   0 }, /* since mod == 11 */
/*22*/      { "mov",   TRUE,  LONG,  op2(E,CR),   0 },
/*23*/      { "mov",   TRUE,  LONG,  op2(E,DR),   0 },
/*24*/      { "mov",   TRUE,  LONG,  op2(TR,E),   0 },
/*25*/      { "(bad)", FALSE, NONE,  0,         0 },
/*26*/      { "mov",   TRUE,  LONG,  op2(E,TR),   0 },
/*27*/      { "(bad)", FALSE, NONE,  0,         0 },

/*28*/      { "",    FALSE, NONE,  0,           0 },
/*29*/      { "",      FALSE, NONE,  0,         0 },
/*2a*/      { "",      FALSE, NONE,  0,         0 },
/*2b*/      { "",      FALSE, NONE,  0,         0 },
/*2c*/      { "",      FALSE, NONE,  0,         0 },
/*2d*/      { "",      FALSE, NONE,  0,         0 },
/*2e*/      { "",      FALSE, NONE,  0,         0 },
/*2f*/      { "",      FALSE, NONE,  0,         0 },
};

static const struct inst db_inst_0f3x[] = {
/*30*/      { "wrmsr", FALSE, NONE,  0,   0 },
/*31*/      { "rdtsc", FALSE, NONE,  0,   0 },
/*32*/      { "rdmsr", FALSE, NONE,  0,   0 },
/*33*/      { "rdpmc", FALSE, NONE,  0,   0 },
/*34*/      { "sysenter",FALSE,NONE, 0,   0 },
/*35*/      { "sysexit",FALSE,NONE,  0,   0 },
/*36*/      { "(bad)", FALSE, NONE,  0,   0 },
/*37*/      { "(bad)", FALSE, NONE,  0,   0 },

/*38*/      { "(bad)",FALSE, NONE,  0,          0 },
/*39*/      { "(bad)",FALSE, NONE,  0,          0 },
/*3a*/      { "(bad)",FALSE, NONE,  0,          0 },
/*3b*/      { "(bad)",FALSE, NONE,  0,          0 },
/*3c*/      { "(bad)",FALSE, NONE,  0,          0 },
/*3d*/      { "(bad)",FALSE, NONE,  0,          0 },
/*3e*/      { "(bad)",FALSE, NONE,  0,          0 },
/*3f*/      { "(bad)",FALSE, NONE,  0,          0 },
};

static const struct inst db_inst_0f4x[] = {
/*40*/      { "cmovo", TRUE,  NONE,  op2(E, R), 0 },
/*41*/      { "cmovno", TRUE, NONE,  op2(E, R), 0 },
/*42*/      { "cmovnae",TRUE, NONE,  op2(E, R), 0 },
/*43*/      { "cmovnb", TRUE, NONE,  op2(E, R), 0 },
/*44*/      { "cmove", TRUE,  NONE,  op2(E, R), 0 },
/*45*/      { "cmovne", TRUE, NONE,  op2(E, R), 0 },
/*46*/      { "cmovna", TRUE, NONE,  op2(E, R), 0 },
/*47*/      { "cmova",  TRUE, NONE,  op2(E, R), 0 },

/*48*/      { "cmovs", TRUE,  NONE,  op2(E, R), 0 },
/*49*/      { "cmovns", TRUE, NONE,  op2(E, R), 0 },
/*4a*/      { "cmovpe", TRUE, NONE,  op2(E, R), 0 },
/*4b*/      { "cmovpo", TRUE, NONE,  op2(E, R), 0 },
/*4c*/      { "cmovl", TRUE,  NONE,  op2(E, R), 0 },
/*4d*/      { "cmovge", TRUE, NONE,  op2(E, R), 0 },
/*4e*/      { "cmovle", TRUE, NONE,  op2(E, R), 0 },
/*4f*/      { "cmovnle",TRUE, NONE,  op2(E, R), 0 },
};

static const struct inst db_inst_0f5x[] = {
/*50*/      { "movmskps",TRUE, NONE, op2(E, XMM), 0 },
/*51*/      { "sqrtps",  TRUE, NONE, op2(XMM, EXMM), 0 },
/*52*/      { "rsqrtps", TRUE, NONE, op2(XMM, EXMM), 0 },
/*53*/      { "rcpps",   TRUE, NONE, op2(XMM, EXMM), 0 },
/*54*/      { "andps",   TRUE, NONE, op2(XMM, EXMM), 0 },
/*55*/      { "andnps",  TRUE, NONE, op2(XMM, EXMM), 0 },
/*56*/      { "orps",    TRUE, NONE, op2(XMM, EXMM), 0 },
/*57*/      { "xorps",   TRUE, NONE, op2(XMM, EXMM), 0 },

/*58*/      { "addps",   TRUE, NONE, op2(XMM, EXMM), 0 },
/*59*/      { "mulps",   TRUE, NONE, op2(XMM, EXMM), 0 },
/*5a*/      { "(bad)",   FALSE, NONE,  0,   0 },
/*5b*/      { "(bad)",   FALSE, NONE,  0,   0 },
/*5c*/      { "subps",   TRUE, NONE, op2(XMM, EXMM), 0 },
/*5d*/      { "minps",   TRUE, NONE, op2(XMM, EXMM), 0 },
/*5e*/      { "divps",   TRUE, NONE, op2(XMM, EXMM), 0 },
/*5f*/      { "maxps",   TRUE, NONE, op2(XMM, EXMM), 0 },
};

static const struct inst db_inst_0f6x[] = {
/*60*/      { "punpcklbw", TRUE, NONE,  op2(E, MX), 0 },
/*61*/      { "punpcklwd", TRUE, NONE,  op2(E, MX),   0 },
/*62*/      { "punpckldq", TRUE, NONE,  op2(E, MX), 0 },
/*63*/      { "packsswb",  TRUE, NONE,  op2(E, MX),   0 },
/*64*/      { "pcmpgtb",   TRUE, NONE,  op2(E, MX), 0 },
/*65*/      { "pcmpgtw",   TRUE, NONE,  op2(E, MX), 0 },
/*66*/      { "pcmpgtd",   TRUE, NONE,  op2(E, MX), 0 },
/*67*/      { "packuswb",  TRUE, NONE,  op2(E, MX), 0 },

/*68*/      { "punpckhbw", TRUE, NONE,  op2(E, MX), 0 },
/*69*/      { "punpckhwd", TRUE, NONE,  op2(E, MX), 0 },
/*6a*/      { "punpckhdq", TRUE, NONE,  op2(E, MX), 0 },
/*6b*/      { "packssdw",  TRUE, NONE,  op2(E, MX), 0 },
/*6c*/      { "(bad)",     TRUE, NONE,  0, 0 },
/*6d*/      { "(bad)",     TRUE, NONE,  0, 0 },
/*6e*/      { "movd",      TRUE, NONE,  op2(E, MX), 0 },
/*6f*/      { "movq",      TRUE, NONE,  op2(E, MX), 0 },
};

static const struct inst db_inst_0f7x[] = {
/*70*/      { "pshufw",    TRUE, NONE,  op2(MX, EMX), 0 },
/*71*/      { "(grp10)",   TRUE, BYTE,  op2(EMX, I), (const char*)db_Grp10 },
/*72*/      { "(grp11)",   TRUE, BYTE,  op2(EMX, I), (const char*)db_Grp11 },
/*73*/      { "(grp12)",   TRUE, BYTE,  op2(EMX, I), (const char*)db_Grp12 },
/*74*/      { "pcmpeqb",   TRUE, NONE,  op2(E, MX), 0 },
/*75*/      { "pcmpeqw",   TRUE, NONE,  op2(E, MX), 0 },
/*76*/      { "pcmpeqd",   TRUE, NONE,  op2(E, MX), 0 },
/*77*/      { "emms",      FALSE,NONE,  0, 0 },

/*78*/      { "(bad)",     TRUE, NONE,  0, 0 },
/*79*/      { "(bad)",     TRUE, NONE,  0, 0 },
/*7a*/      { "(bad)",     TRUE, NONE,  0, 0 },
/*7b*/      { "(bad)",     TRUE, NONE,  0, 0 },
/*7c*/      { "(bad)",     TRUE, NONE,  0, 0 },
/*7d*/      { "(bad)",     TRUE, NONE,  0, 0 },
/*7e*/      { "movd",      TRUE, NONE,  op2(E, MX), 0 },
/*7f*/      { "movq",      TRUE, NONE,  op2(EMX, MX), 0 },
};

static const struct inst db_inst_0f8x[] = {
/*80*/      { "jo",    FALSE, NONE,  op1(Dl),     0 },
/*81*/      { "jno",   FALSE, NONE,  op1(Dl),     0 },
/*82*/      { "jb",    FALSE, NONE,  op1(Dl),     0 },
/*83*/      { "jnb",   FALSE, NONE,  op1(Dl),     0 },
/*84*/      { "jz",    FALSE, NONE,  op1(Dl),     0 },
/*85*/      { "jnz",   FALSE, NONE,  op1(Dl),     0 },
/*86*/      { "jbe",   FALSE, NONE,  op1(Dl),     0 },
/*87*/      { "jnbe",  FALSE, NONE,  op1(Dl),     0 },

/*88*/      { "js",    FALSE, NONE,  op1(Dl),     0 },
/*89*/      { "jns",   FALSE, NONE,  op1(Dl),     0 },
/*8a*/      { "jp",    FALSE, NONE,  op1(Dl),     0 },
/*8b*/      { "jnp",   FALSE, NONE,  op1(Dl),     0 },
/*8c*/      { "jl",    FALSE, NONE,  op1(Dl),     0 },
/*8d*/      { "jnl",   FALSE, NONE,  op1(Dl),     0 },
/*8e*/      { "jle",   FALSE, NONE,  op1(Dl),     0 },
/*8f*/      { "jnle",  FALSE, NONE,  op1(Dl),     0 },
};

static const struct inst db_inst_0f9x[] = {
/*90*/      { "seto",  TRUE,  NONE,  op1(Eb),     0 },
/*91*/      { "setno", TRUE,  NONE,  op1(Eb),     0 },
/*92*/      { "setb",  TRUE,  NONE,  op1(Eb),     0 },
/*93*/      { "setnb", TRUE,  NONE,  op1(Eb),     0 },
/*94*/      { "setz",  TRUE,  NONE,  op1(Eb),     0 },
/*95*/      { "setnz", TRUE,  NONE,  op1(Eb),     0 },
/*96*/      { "setbe", TRUE,  NONE,  op1(Eb),     0 },
/*97*/      { "setnbe",TRUE,  NONE,  op1(Eb),     0 },

/*98*/      { "sets",  TRUE,  NONE,  op1(Eb),     0 },
/*99*/      { "setns", TRUE,  NONE,  op1(Eb),     0 },
/*9a*/      { "setp",  TRUE,  NONE,  op1(Eb),     0 },
/*9b*/      { "setnp", TRUE,  NONE,  op1(Eb),     0 },
/*9c*/      { "setl",  TRUE,  NONE,  op1(Eb),     0 },
/*9d*/      { "setnl", TRUE,  NONE,  op1(Eb),     0 },
/*9e*/      { "setle", TRUE,  NONE,  op1(Eb),     0 },
/*9f*/      { "setnle",TRUE,  NONE,  op1(Eb),     0 },
};

static const struct inst db_inst_0fax[] = {
/*a0*/      { "push",  FALSE, NONE,  op1(Si),     0 },
/*a1*/      { "pop",   FALSE, NONE,  op1(Si),     0 },
/*a2*/      { "cpuid", FALSE, NONE,  0,         0 },
/*a3*/      { "bt",    TRUE,  LONG,  op2(E,R),    0 },
/*a4*/      { "shld",  TRUE,  LONG,  op3(Ib,E,R), 0 },
/*a5*/      { "shld",  TRUE,  LONG,  op3(CL,E,R), 0 },
/*a6*/      { "",      FALSE, NONE,  0,         0 },
/*a7*/      { "",      FALSE, NONE,  0,         0 },

/*a8*/      { "push",  FALSE, NONE,  op1(Si),     0 },
/*a9*/      { "pop",   FALSE, NONE,  op1(Si),     0 },
/*aa*/      { "",      FALSE, NONE,  0,         0 },
/*ab*/      { "bts",   TRUE,  LONG,  op2(E,R),    0 },
/*ac*/      { "shrd",  TRUE,  LONG,  op3(Ib,E,R), 0 },
/*ad*/      { "shrd",  TRUE,  LONG,  op3(CL,E,R), 0 },
/*a6*/      { "",      FALSE, NONE,  0,         0 },
/*a7*/      { "imul",  TRUE,  LONG,  op2(E,R),    0 },
};

static const struct inst db_inst_0fbx[] = {
/*b0*/      { "cmpxchg",TRUE, BYTE,  op2(E, R),   0 },
/*b1*/      { "cmpxchg",TRUE, LONG,  op2(E, R),   0 },
/*b2*/      { "lss",   TRUE,  LONG,  op2(E, R),   0 },
/*b3*/      { "bts",   TRUE,  LONG,  op2(R, E),   0 },
/*b4*/      { "lfs",   TRUE,  LONG,  op2(E, R),   0 },
/*b5*/      { "lgs",   TRUE,  LONG,  op2(E, R),   0 },
/*b6*/      { "movzb", TRUE,  LONG,  op2(E, R),   0 },
/*b7*/      { "movzw", TRUE,  LONG,  op2(E, R),   0 },

/*b8*/      { "",      FALSE, NONE,  0,         0 },
/*b9*/      { "",      FALSE, NONE,  0,         0 },
/*ba*/      { "",      TRUE,  LONG,  op2(Ib, E),  (const char *)db_Grp8 },
/*bb*/      { "btc",   TRUE,  LONG,  op2(R, E),   0 },
/*bc*/      { "bsf",   TRUE,  LONG,  op2(E, R),   0 },
/*bd*/      { "bsr",   TRUE,  LONG,  op2(E, R),   0 },
/*be*/      { "movsb", TRUE,  LONG,  op2(E, R),   0 },
/*bf*/      { "movsw", TRUE,  LONG,  op2(E, R),   0 },
};

static const struct inst db_inst_0fcx[] = {
/*c0*/      { "xadd",  TRUE,  BYTE,  op2(R, E),   0 },
/*c1*/      { "xadd",  TRUE,  LONG,  op2(R, E),   0 },
/*c2*/      { "",    FALSE, NONE,    0,         0 },
/*c3*/      { "",    FALSE, NONE,    0,         0 },
/*c4*/      { "",    FALSE, NONE,    0,         0 },
/*c5*/      { "",    FALSE, NONE,    0,         0 },
/*c6*/      { "",    FALSE, NONE,    0,         0 },
/*c7*/      { "",    FALSE, NONE,    0,         0 },
/*c8*/      { "bswap", FALSE, LONG,  op1(Ri),     0 },
/*c9*/      { "bswap", FALSE, LONG,  op1(Ri),     0 },
/*ca*/      { "bswap", FALSE, LONG,  op1(Ri),     0 },
/*cb*/      { "bswap", FALSE, LONG,  op1(Ri),     0 },
/*cc*/      { "bswap", FALSE, LONG,  op1(Ri),     0 },
/*cd*/      { "bswap", FALSE, LONG,  op1(Ri),     0 },
/*ce*/      { "bswap", FALSE, LONG,  op1(Ri),     0 },
/*cf*/      { "bswap", FALSE, LONG,  op1(Ri),     0 },
};

static const struct inst db_inst_0fdx[] = {
/*d0*/      { "(bad)",   FALSE, NONE,0,   0 },
/*d1*/      { "psrlw",   TRUE,  NONE,op2(MX,EMX), 0 },
/*d2*/      { "psrld",   TRUE,  NONE,op2(MX,EMX), 0 },
/*d3*/      { "psrld",   TRUE,  NONE,op2(MX,EMX), 0 },
/*d4*/      { "(bad)",   FALSE, NONE,0,         0 },
/*d5*/      { "pmulww",  TRUE,  NONE,op2(MX,EMX), 0 },
/*d6*/      { "(bad)",   FALSE, NONE,0,         0 },
/*d7*/      { "pmovmskb",FALSE, NONE,op2(MX,EMX),0 },
/*d8*/      { "psubusb", TRUE,  NONE,op2(MX,EMX), 0 },
/*d9*/      { "psubusw", TRUE,  NONE,op2(MX,EMX), 0 },
/*da*/      { "pminub",  TRUE,  NONE,op2(MX,EMX), 0 },
/*db*/      { "pand",    TRUE,  NONE,op2(MX,EMX), 0 },
/*dc*/      { "paddusb", TRUE,  NONE,op2(MX,EMX), 0 },
/*dd*/      { "paddusw", TRUE,  NONE,op2(MX,EMX), 0 },
/*de*/      { "pmaxub",  TRUE,  NONE,op2(MX,EMX), 0 },
/*df*/      { "pandn",   TRUE,  NONE,op2(MX,EMX), 0 },
};

static const struct inst db_inst_0fex[] = {
/*e0*/      { "pavgb",  TRUE, NONE,  op2(MX, EMX),   0 },
/*e1*/      { "psraw",  TRUE, NONE,  op2(MX, EMX),   0 },
/*e2*/      { "psrad",  TRUE, NONE,  op2(MX, EMX),   0 },
/*e3*/      { "pavgw",  TRUE, NONE,  op2(MX, EMX),   0 },
/*e4*/      { "pmulhuw",TRUE, NONE,  op2(MX, EMX),   0 },
/*e5*/      { "pmulhw", TRUE, NONE,  op2(MX, EMX),   0 },
/*e6*/      { "(bad)",  FALSE,NONE,  0,          0 },
/*e7*/      { "movntq", TRUE, NONE,  op2(MX, EMX),   0 },
/*e8*/      { "psubsb", TRUE, NONE,  op2(MX, EMX),   0 },
/*e9*/      { "psubsw", TRUE, NONE,  op2(MX, EMX),   0 },
/*ea*/      { "pminsw", TRUE, NONE,  op2(MX, EMX),   0 },
/*eb*/      { "por",    TRUE, NONE,  op2(MX, EMX),   0 },
/*ec*/      { "paddsb", TRUE, NONE,  op2(MX, EMX),   0 },
/*ed*/      { "paddsw", TRUE, NONE,  op2(MX, EMX),   0 },
/*ee*/      { "pmaxsw", TRUE, NONE,  op2(MX, EMX),   0 },
/*ef*/      { "pxor",   TRUE, NONE,  op2(MX, EMX),   0 },
};

static const struct inst db_inst_0ffx[] = {
/*f0*/      { "(bad)",  FALSE,NONE,  0,   0 },
/*f1*/      { "psllw",  TRUE, NONE,  op2(MX, EMX),   0 },
/*f2*/      { "pslld",  TRUE, NONE,  op2(MX, EMX),   0 },
/*f3*/      { "psllq",  TRUE, NONE,  op2(MX, EMX),   0 },
/*f4*/      { "(bad)",  FALSE,NONE,  0,   0 },
/*f5*/      { "pmaddwd",TRUE, NONE,  op2(MX, EMX),   0 },
/*f6*/      { "psadbw", TRUE, NONE,  op2(MX, EMX),   0 },
/*f7*/      { "maskmovq",TRUE,NONE,  op2(MX, EMX),   0 },
/*f8*/      { "psubb",  TRUE, NONE,  op2(MX, EMX),   0 },
/*f9*/      { "psubw",  TRUE, NONE,  op2(MX, EMX),   0 },
/*fa*/      { "psubd",  TRUE, NONE,  op2(MX, EMX),   0 },
/*fb*/      { "(bad)",  FALSE,NONE,  0,   0 },
/*fc*/      { "paddb",  TRUE, NONE,  op2(MX, EMX),   0 },
/*fd*/      { "paddw",  TRUE, NONE,  op2(MX, EMX),   0 },
/*fe*/      { "paddd",  TRUE, NONE,  op2(MX, EMX),   0 },
/*ff*/      { "(bad)",  FALSE, NONE, 0,   0 },
};

static const struct inst * const db_inst_0f[] = {
      db_inst_0f0x,
      0,
      db_inst_0f2x,
      db_inst_0f3x,
      db_inst_0f4x,
      db_inst_0f5x,
      db_inst_0f6x,
      db_inst_0f7x,
      db_inst_0f8x,
      db_inst_0f9x,
      db_inst_0fax,
      db_inst_0fbx,
      db_inst_0fcx,
      db_inst_0fdx,
      db_inst_0fex,
      db_inst_0ffx
};

static const char * const db_Esc92[] = {
      "fnop",     "",   "",   "",   "",   "",   "",   ""
};
static const char * const db_Esc93[] = {
      "",   "",   "",   "",   "",   "",   "",   ""
};
static const char * const db_Esc94[] = {
      "fchs",     "fabs",     "",   "",   "ftst",     "fxam",     "",   ""
};
static const char * const db_Esc95[] = {
      "fld1",     "fldl2t","fldl2e","fldpi","fldlg2","fldln2","fldz",""
};
static const char * const db_Esc96[] = {
      "f2xm1","fyl2x","fptan","fpatan","fxtract","fprem1","fdecstp",
      "fincstp"
};
static const char * const db_Esc97[] = {
      "fprem","fyl2xp1","fsqrt","fsincos","frndint","fscale","fsin","fcos"
};

static const char * const db_Esca4[] = {
      "",   "fucompp","",     "",   "",   "",   "",   ""
};

static const char * const db_Escb4[] = {
      "",   "",   "fnclex","fninit","",   "",   "",   ""
};

static const char * const db_Esce3[] = {
      "",   "fcompp","",      "",   "",   "",   "",   ""
};

static const char * const db_Escf4[] = {
      "fnstsw","",      "",   "",   "",   "",   "",   ""
};

static const struct finst db_Esc8[] = {
/*0*/ { "fadd",   SNGL,  op2(STI,ST),     0 },
/*1*/ { "fmul",   SNGL,  op2(STI,ST),     0 },
/*2*/ { "fcom",   SNGL,  op2(STI,ST),     0 },
/*3*/ { "fcomp",  SNGL,  op2(STI,ST),     0 },
/*4*/ { "fsub",   SNGL,  op2(STI,ST),     0 },
/*5*/ { "fsubr",  SNGL,  op2(STI,ST),     0 },
/*6*/ { "fdiv",   SNGL,  op2(STI,ST),     0 },
/*7*/ { "fdivr",  SNGL,  op2(STI,ST),     0 },
};

static const struct finst db_Esc9[] = {
/*0*/ { "fld",    SNGL,  op1(STI),  0 },
/*1*/ { "",       NONE,  op1(STI),  "fxch" },
/*2*/ { "fst",    SNGL,  op1(X),    (const char *)db_Esc92 },
/*3*/ { "fstp",   SNGL,  op1(X),    (const char *)db_Esc93 },
/*4*/ { "fldenv", NONE,  op1(X),    (const char *)db_Esc94 },
/*5*/ { "fldcw",  NONE,  op1(X),    (const char *)db_Esc95 },
/*6*/ { "fnstenv",NONE,  op1(X),    (const char *)db_Esc96 },
/*7*/ { "fnstcw", NONE,  op1(X),    (const char *)db_Esc97 },
};

static const struct finst db_Esca[] = {
/*0*/ { "fiadd",  WORD,  0,         0 },
/*1*/ { "fimul",  WORD,  0,         0 },
/*2*/ { "ficom",  WORD,  0,         0 },
/*3*/ { "ficomp", WORD,  0,         0 },
/*4*/ { "fisub",  WORD,  op1(X),    (const char *)db_Esca4 },
/*5*/ { "fisubr", WORD,  0,         0 },
/*6*/ { "fidiv",  WORD,  0,         0 },
/*7*/ { "fidivr", WORD,  0,         0 }
};

static const struct finst db_Escb[] = {
/*0*/ { "fild",   WORD,  0,         0 },
/*1*/ { "",       NONE,  0,         0 },
/*2*/ { "fist",   WORD,  0,         0 },
/*3*/ { "fistp",  WORD,  0,         0 },
/*4*/ { "",       WORD,  op1(X),    (const char *)db_Escb4 },
/*5*/ { "fld",    EXTR,  0,         0 },
/*6*/ { "",       WORD,  0,         0 },
/*7*/ { "fstp",   EXTR,  0,         0 },
};

static const struct finst db_Escc[] = {
/*0*/ { "fadd",   DBLR,  op2(ST,STI),     0 },
/*1*/ { "fmul",   DBLR,  op2(ST,STI),     0 },
/*2*/ { "fcom",   DBLR,  op2(ST,STI),     0 },
/*3*/ { "fcomp",  DBLR,  op2(ST,STI),     0 },
/*4*/ { "fsub",   DBLR,  op2(ST,STI),     "fsubr" },
/*5*/ { "fsubr",  DBLR,  op2(ST,STI),     "fsub" },
/*6*/ { "fdiv",   DBLR,  op2(ST,STI),     "fdivr" },
/*7*/ { "fdivr",  DBLR,  op2(ST,STI),     "fdiv" },
};

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",  LONG,  op2(ST,STI),     "faddp" },
/*1*/ { "fimul",  LONG,  op2(ST,STI),     "fmulp" },
/*2*/ { "ficom",  LONG,  0,         0 },
/*3*/ { "ficomp", LONG,  op1(X),    (const char *)db_Esce3 },
/*4*/ { "fisub",  LONG,  op2(ST,STI),     "fsubrp" },
/*5*/ { "fisubr", LONG,  op2(ST,STI),     "fsubp" },
/*6*/ { "fidiv",  LONG,  op2(ST,STI),     "fdivrp" },
/*7*/ { "fidivr", LONG,  op2(ST,STI),     "fdivp" },
};

static const struct finst db_Escf[] = {
/*0*/ { "fild",   LONG,  0,         0 },
/*1*/ { "",       LONG,  0,         0 },
/*2*/ { "fist",   LONG,  0,         0 },
/*3*/ { "fistp",  LONG,  0,         0 },
/*4*/ { "fbld",   NONE,  op1(XA),   (const char *)db_Escf4 },
/*5*/ { "fld",    QUAD,  0,         0 },
/*6*/ { "fbstp",  NONE,  0,         0 },
/*7*/ { "fstp",   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, NONE, op1(Eind),0 },
      { "lcall", TRUE, NONE, op1(Eind),0 },
      { "jmp",   TRUE, NONE, op1(Eind),0 },
      { "ljmp",  TRUE, NONE, 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(Is, 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(Is, 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(Is, 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*/      { "aaa",   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(Is, 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*/      { "daa",   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(Is, 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(Ew,Rw), 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(Ib),    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),   (const char *)db_Grp1 },
/*81*/  { "",        TRUE,  LONG,  op2(I, E),   (const char *)db_Grp1 },
/*82*/  { "",        TRUE,  BYTE,  op2(Is,E),   (const char *)db_Grp1 },
/*83*/  { "",        TRUE,  LONG,  op2(Ibs,E),  (const char *)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(DI),     0 },
/*af*/      { "scas",  FALSE, LONG,  op1(DI),     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),  (const char *)db_Grp2 },
/*c1*/      { "",    TRUE,  LONG,  op2(Ib, E),  (const char *)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),  (const char *)db_Grp2 },
/*d1*/      { "",    TRUE,  LONG,  op2(o1, E),  (const char *)db_Grp2 },
/*d2*/      { "",    TRUE,  BYTE,  op2(CL, E),  (const char *)db_Grp2 },
/*d3*/      { "",    TRUE,  LONG,  op2(CL, E),  (const char *)db_Grp2 },
/*d4*/      { "aam",   TRUE,  NONE,  0,         0 },
/*d5*/      { "aad",   TRUE,  NONE,  0,         0 },
/*d6*/      { "",      FALSE, NONE,  0,         0 },
/*d7*/      { "xlat",  FALSE, BYTE,  op1(BX),     0 },

/*d8*/  { "",      TRUE,  NONE,  0,       (const char *)db_Esc8 },
/*d9*/  { "",      TRUE,  NONE,  0,       (const char *)db_Esc9 },
/*da*/  { "",      TRUE,  NONE,  0,       (const char *)db_Esca },
/*db*/  { "",      TRUE,  NONE,  0,       (const char *)db_Escb },
/*dc*/  { "",      TRUE,  NONE,  0,       (const char *)db_Escc },
/*dd*/  { "",      TRUE,  NONE,  0,       (const char *)db_Escd },
/*de*/  { "",      TRUE,  NONE,  0,       (const char *)db_Esce },
/*df*/  { "",      TRUE,  NONE,  0,       (const char *)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*/      { "",      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,        (const char *)db_Grp3 },
/*f7*/      { "",    TRUE,  LONG,  0,          (const char *)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,          (const char *)db_Grp4 },
/*ff*/      { "",    TRUE,  NONE,  0,          (const char *)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 */
};

static unsigned int db_get_task_value( const ADDRESS64* addr,
                                       int size, int is_signed )
{
    unsigned int  result = 0;
    char                buffer[4];

    if (size != 1 && size != 2 && size != 4)
    {
        dbg_printf("Illegal size specified\n");
    }
    else 
    {
        dbg_read_memory(memory_to_linear_addr(addr), buffer, size);

        switch (size)
        {
        case 4:
            if (is_signed) result = (unsigned int) *(int *)buffer;
            else result = *(unsigned int *)buffer;
            break;
        case 2:
            if (is_signed) result = (unsigned int) *(short int *)buffer;
            else result = *(unsigned short int *)buffer;
            break;
        case 1:
            if (is_signed) result = (unsigned int) *(char *)buffer;
            else result = *(unsigned char *)buffer;
            break;
        }
    }
    return result;
}

#define     get_value_inc(result, addr, size, is_signed) \
    result = db_get_task_value((addr), (size), (is_signed)); \
    if (!db_disasm_16) (addr)->Offset += (size); \
    else (addr)->Offset = ((addr)->Offset + (size)) & 0xffff;

/*
 * Read address at location and return updated location.
 */
static void db_read_address( ADDRESS64* addr, int short_addr, int regmodrm,
                             struct i_addr *addrp )
{
      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;
      }
      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, addr, 2, TRUE);
                  addrp->disp = disp;
                  addrp->base = 0;
                }
                else {
                  addrp->disp = 0;
                  addrp->base = db_index_reg_16[rm];
                }
                break;
            case 1:
                get_value_inc(disp, addr, 1, TRUE);
                addrp->disp = disp;
                addrp->base = db_index_reg_16[rm];
                break;
            case 2:
                get_value_inc(disp, addr, 2, TRUE);
                addrp->disp = disp;
                addrp->base = db_index_reg_16[rm];
                break;
          }
      }
      else {
          if (mod != 3 && rm == 4) {
            get_value_inc(sib, addr, 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, addr, 4, FALSE);
                  addrp->base = 0;
                }
                else {
                  addrp->disp = 0;
                  addrp->base = db_reg[LONG][rm];
                }
                break;

            case 1:
                get_value_inc(disp, addr, 1, TRUE);
                addrp->disp = disp;
                addrp->base = db_reg[LONG][rm];
                break;

            case 2:
                get_value_inc(disp, addr, 4, FALSE);
                addrp->disp = disp;
                addrp->base = db_reg[LONG][rm];
                break;
          }
      }
}

static void db_task_printsym(unsigned int addr, int size)
{
    ADDRESS64   a;
    a.Mode   = AddrModeFlat;
    a.Offset = addr;

    print_address(&a, TRUE);
}

static void db_print_address(const char *seg, int size, struct i_addr *addrp, int byref)
{
      if (addrp->is_reg) {
          dbg_printf("%s", db_reg[size][addrp->disp]);
          return;
      }

      if (seg) {
          dbg_printf("%s:", seg);
      }

      if (addrp->base != 0 || addrp->index != 0) {
          dbg_printf("0x%x(", addrp->disp);
          if (addrp->base)
            dbg_printf("%s", addrp->base);
          if (addrp->index)
            dbg_printf(",%s,%d", addrp->index, 1<<addrp->ss);
          dbg_printf(")");
      }
      else {

          /* try to get destination of indirect call
             does not work for segmented addresses */
          if (!seg && byref) {
               void*    a1;
               void*    a2;
               
               dbg_printf("0x%x -> ", addrp->disp);
             if (!dbg_read_memory((void*)addrp->disp, &a1, sizeof(a1))) {
               dbg_printf("(invalid source)");
             } else if (!dbg_read_memory(a1, &a2, sizeof(a2))) {
              dbg_printf("(invalid destination)");
             } else {
                   db_task_printsym((unsigned long)a1, 0);
               }
          }
          else
             db_task_printsym(addrp->disp, size);
      }
}

/*
 * Disassemble floating-point ("escape") instruction
 * and return updated location.
 */
static void db_disasm_esc( ADDRESS64* addr, 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, addr, 1, FALSE);
      if( !db_display )
        {
          return;
        }

      fp = &db_Esc_inst[inst - 0xd8][f_reg(regmodrm)];
      mod = f_mod(regmodrm);
      if (mod != 3) {
            const char* p;
          /*
           * Normal address modes.
           */
          db_read_address( addr, short_addr, regmodrm, &address);
          dbg_printf("%s", fp->f_name);
          switch(fp->f_size) {
            case SNGL: p = "s"; break;
            case DBLR: p = "l"; break;
            case EXTR: p = "t"; break;
            case WORD: p = "s"; break;
            case LONG: p = "l"; break;
            case QUAD: p = "q"; break;
            default:   p = "";  break;
          }
          dbg_printf("%s\t", p);
          db_print_address(seg, BYTE, &address, 0);
      }
      else {
          /*
           * 'reg-reg' - special formats
           */
          switch (fp->f_rrmode) {
            case op2(ST,STI):
                name = (fp->f_rrname) ? fp->f_rrname : fp->f_name;
                dbg_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;
                dbg_printf("%s\t%%st(%d),%%st",name, f_rm(regmodrm));
                break;
            case op1(STI):
                name = (fp->f_rrname) ? fp->f_rrname : fp->f_name;
                dbg_printf("%s\t%%st(%d)",name, f_rm(regmodrm));
                break;
            case op1(X):
                dbg_printf("%s", ((char * const*)fp->f_rrname)[f_rm(regmodrm)]);
                break;
            case op1(XA):
                dbg_printf("%s\t%%ax", ((char * const*)fp->f_rrname)[f_rm(regmodrm)]);
                break;
            default:
                dbg_printf("<bad instruction>");
                break;
          }
      }
}


/***********************************************************************
 *              disasm_one_insn
 *
 * Disassemble instruction at 'addr'.  addr is changed to point to the
 * start of the next instruction.
 */
void be_i386_disasm_one_insn(ADDRESS64 *addr, int display)
{
      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;
      BOOL  first;
      int   displ;
      int   prefix;
      int   imm;
      int   len;
      struct i_addr     address;

      /*
       * Set this so we get can suppress the printout if we need to.
       */
      db_display = display;
        switch (addr->Mode)
        {
        case AddrModeReal:
        case AddrMode1616: db_disasm_16 = 1; break;
        default: db_disasm_16 = 0; break;
      }

      get_value_inc( inst, addr, 1, FALSE );

      if (db_disasm_16) {
          short_addr = TRUE;
          size = WORD;
      }
      else {
          short_addr = FALSE;
          size = LONG;
      }
      seg = 0;

      /*
       * Get prefixes
       */
      prefix = TRUE;
      do {
          switch (inst) {
            case 0x66:        /* data16 */
                if (size == LONG)
                  size = WORD;
                else
                  size = LONG;
                break;
            case 0x67:
                short_addr = !short_addr;
                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:
                if( db_display )
                  dbg_printf("lock ");
                break;
            case 0xf2:
                if( db_display )
                  dbg_printf("repne ");
                break;
            case 0xf3:
                if( db_display )
                  dbg_printf("repe ");    /* XXX repe VS rep */
                break;
            default:
                prefix = FALSE;
                break;
          }
          if (prefix) {
            get_value_inc(inst, addr, 1, FALSE);
          }
      } while (prefix);

      if (inst >= 0xd8 && inst <= 0xdf)
        {
          db_disasm_esc( addr, inst, short_addr, size, seg);
            return;
        }

      if (inst == 0x0f) {
          get_value_inc(inst, addr, 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, addr, 1, FALSE);
          db_read_address( addr, short_addr, regmodrm, &address);
      }

      i_name = ip->i_name;
      i_size = ip->i_size;
      i_mode = ip->i_mode;

      if (ip->i_extra == (const char *)db_Grp1 ||
          ip->i_extra == (const char *)db_Grp2 ||
          ip->i_extra == (const char *)db_Grp6 ||
          ip->i_extra == (const char *)db_Grp7 ||
          ip->i_extra == (const char *)db_Grp8 ||
          ip->i_extra == (const char *)db_Grp10 ||
          ip->i_extra == (const char *)db_Grp11 ||
          ip->i_extra == (const char *)db_Grp12) {
          i_name = ((const char * const*)ip->i_extra)[f_reg(regmodrm)];
      }
      else if (ip->i_extra == (const char *)db_Grp3) {
          ip = (const struct inst *)ip->i_extra;
          ip = &ip[f_reg(regmodrm)];
          i_name = ip->i_name;
          i_mode = ip->i_mode;
      }
      else if (ip->i_extra == (const char *)db_Grp4 ||
             ip->i_extra == (const char *)db_Grp5) {
          ip = (const struct inst *)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( db_display )
          {
            if (size == WORD)
            dbg_printf("%s", i_name);
            else
            dbg_printf("%s", ip->i_extra);
          }
      }
      else {
        if( db_display )
          {
            dbg_printf("%s", i_name);
          }
          if (i_size != NONE) {
            if (i_size == BYTE) {
              if( db_display )
                {
                  dbg_printf("b");
                }
                size = BYTE;
            }
            else if (i_size == WORD) {
              if( db_display )
                {
                  dbg_printf("w");
                }
                size = WORD;
            }
            else if (size == WORD)
              {
              if( db_display )
                {
                  dbg_printf("w");
                }
              }
            else
              {
              if( db_display )
                {
                  dbg_printf("l");
                }
              }
          }
      }
      if( db_display )
        {
          dbg_printf("\t");
        }
      for (first = TRUE;
           i_mode != 0;
           i_mode >>= 8, first = FALSE)
      {
          if (!first && db_display)
            dbg_printf(",");

          switch (i_mode & 0xFF) {

            case E:
              if( db_display )
                {
                  db_print_address(seg, size, &address, 0);
                }
                break;

            case Eind:
              if( db_display )
                {
                  dbg_printf("*");
                  db_print_address(seg, size, &address, 1);
                }
                break;

            case Ew:
              if( db_display )
                {
                  db_print_address(seg, WORD, &address, 0);
                }
                break;

            case Eb:
              if( db_display )
                {
                  db_print_address(seg, BYTE, &address, 0);
                }
                break;

            case R:
              if( db_display )
                {
                  dbg_printf("%s", db_reg[size][f_reg(regmodrm)]);
                }
                break;
            case MX:
              if( db_display )
                {
                  dbg_printf("%%mm%d", f_reg(regmodrm));
                }
                break;
            case EMX:
              if( db_display )
                {
                  dbg_printf("%%mm%d", f_rm(regmodrm));
                }
                break;
            case XMM:
              if( db_display )
                {
                  dbg_printf("%%xmm%d", f_reg(regmodrm));
                }
                break;
            case EXMM:
              if( db_display )
                {
                  dbg_printf("%%xmm%d", f_rm(regmodrm));
                }
                break;


            case Rw:
              if( db_display )
                {
                  dbg_printf("%s", db_reg[WORD][f_reg(regmodrm)]);
                }
                break;

            case Ri:
              if( db_display )
                {
                  dbg_printf("%s", db_reg[size][f_rm(inst)]);
                }
                break;

            case S:
              if( db_display )
                {
                  dbg_printf("%s", db_seg_reg[f_reg(regmodrm)]);
                }
                break;

            case Si:
              if( db_display )
                {
                  dbg_printf("%s", db_seg_reg[f_reg(inst)]);
                }
                break;

            case A:
              if( db_display )
                {
                  dbg_printf("%s", db_reg[size][0]);  /* acc */
                }
                break;

            case BX:
              if( db_display )
                {
                  if (seg)
                  dbg_printf("%s:", seg);
                  dbg_printf("(%s)", short_addr ? "%bx" : "%ebx");
                }
                break;

            case CL:
              if( db_display )
                {
                  dbg_printf("%%cl");
                }
                break;

            case DX:
              if( db_display )
                {
                  dbg_printf("%%dx");
                }
                break;

            case SI:
              if( db_display )
                {
                  if (seg)
                  dbg_printf("%s:", seg);
                  dbg_printf("(%s)", short_addr ? "%si" : "%esi");
                }
                break;

            case DI:
              if( db_display )
                {
                  dbg_printf("%%es:(%s)", short_addr ? "%di" : "%edi");
                }
                break;

            case CR:
              if( db_display )
                {
                  dbg_printf("%%cr%d", f_reg(regmodrm));
                }
                break;

            case DR:
              if( db_display )
                {
                  dbg_printf("%%dr%d", f_reg(regmodrm));
                }
                break;

            case TR:
              if( db_display )
                {
                  dbg_printf("%%tr%d", f_reg(regmodrm));
                }
                break;

            case I:
                len = db_lengths[size];
                get_value_inc(imm, addr, len, FALSE);/* unsigned */
                if( db_display )
                  {
                  dbg_printf("$0x%x", imm);
                  }
                break;

            case Is:
                len = db_lengths[size];
                get_value_inc(imm, addr, len, TRUE); /* signed */
              if( db_display )
                {
                  dbg_printf("$%d", imm);
                }
                break;

            case Ib:
                get_value_inc(imm, addr, 1, FALSE); /* unsigned */
              if( db_display )
                {
                  dbg_printf("$0x%x", imm);
                }
                break;

            case Ibs:
                get_value_inc(imm, addr, 1, TRUE); /* signed */
              if( db_display )
                {
                  dbg_printf("$%d", imm);
                }
                break;

            case Iw:
                get_value_inc(imm, addr, 2, FALSE); /* unsigned */
              if( db_display )
                {
                  dbg_printf("$0x%x", imm);
                }
                break;

            case Il:
                get_value_inc(imm, addr, 4, FALSE);
              if( db_display )
                {
                  dbg_printf("$0x%x", imm);
                }
                break;

            case O:
                if (short_addr) {
                  get_value_inc(displ, addr, 2, TRUE);
                }
                else {
                  get_value_inc(displ, addr, 4, TRUE);
                }
                if( !db_display )
                  {
                  break;
                  }

                if (seg)
                  dbg_printf("%s:0x%x",seg, displ);
                else
                  db_task_printsym(displ, short_addr ? WORD : LONG);
                break;

            case Db:
                get_value_inc(displ, addr, 1, TRUE);
                if( !db_display )
                  {
                  break;
                  }

                if (size == WORD) {
                  /* offset only affects low 16 bits */
                    displ = (addr->Offset & 0xffff0000)
                        | ((addr->Offset + displ) & 0xffff);
                }
                else displ += addr->Offset;
                db_task_printsym(displ, size);
                break;

            case Dl:
                if (size == WORD) {
                  get_value_inc(displ, addr, 2, TRUE);
                  /* Offset only affects low 16 bits */
                    displ = (addr->Offset & 0xffff0000)
                        | ((addr->Offset + displ) & 0xffff);
                }
                else {
                  get_value_inc(displ, addr, 4, TRUE);
                  displ += addr->Offset;
                }
                if( !db_display )
                  {
                  break;
                  }
                db_task_printsym( displ, size );
                break;

            case o1:
              if( db_display )
                {
                  dbg_printf("$1");
                }
                break;

            case o3:
              if( db_display )
                {
                  dbg_printf("$3");
                }
                break;

            case OS:
                    {
                        ADDRESS64 address;
                        get_value_inc( address.Offset, addr,  /* offset */
                                       short_addr ? 2 : 4, FALSE );
                        get_value_inc( address.Segment, addr,  /* segment */
                                       2, FALSE );
                        be_cpu->build_addr(dbg_curr_thread->handle, &dbg_context,
                                           &address, address.Segment, address.Offset);
                  if( db_display )
                    {
                              print_address( &address, TRUE );
                    }

                    }
                break;
          }
      }
}
#endif  /* __i386__ */

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