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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*
* $FreeBSD: release/9.1.0/sys/cddl/dev/dtrace/i386/dis_tables.c 238503 2012-07-15 20:38:02Z avg $
*/
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1988 AT&T */
/* All Rights Reserved */
#if defined(sun)
#pragma ident "@(#)dis_tables.c 1.11 06/03/02 SMI"
#endif
#include "dis_tables.h"
/* BEGIN CSTYLED */
/*
* Disassembly begins in dis_distable, which is equivalent to the One-byte
* Opcode Map in the Intel IA32 ISA Reference (page A-6 in my copy). The
* decoding loops then traverse out through the other tables as necessary to
* decode a given instruction.
*
* The behavior of this file can be controlled by one of the following flags:
*
* DIS_TEXT Include text for disassembly
* DIS_MEM Include memory-size calculations
*
* Either or both of these can be defined.
*
* This file is not, and will never be, cstyled. If anything, the tables should
* be taken out another tab stop or two so nothing overlaps.
*/
/*
* These functions must be provided for the consumer to do disassembly.
*/
#ifdef DIS_TEXT
extern char *strncpy(char *, const char *, size_t);
extern size_t strlen(const char *);
extern int strcmp(const char *, const char *);
extern int strncmp(const char *, const char *, size_t);
extern size_t strlcat(char *, const char *, size_t);
#endif
#define TERM NULL /* used to indicate that the 'indirect' */
/* field terminates - no pointer. */
/* Used to decode instructions. */
typedef struct instable {
const struct instable *it_indirect; /* for decode op codes */
uchar_t it_adrmode;
#ifdef DIS_TEXT
char it_name[NCPS];
uint_t it_suffix:1; /* mneu + "w", "l", or "d" */
#endif
#ifdef DIS_MEM
uint_t it_size:16;
#endif
uint_t it_invalid64:1; /* opcode invalid in amd64 */
uint_t it_always64:1; /* 64 bit when in 64 bit mode */
uint_t it_invalid32:1; /* invalid in IA32 */
uint_t it_stackop:1; /* push/pop stack operation */
} instable_t;
/*
* Instruction formats.
*/
enum {
UNKNOWN,
MRw,
IMlw,
IMw,
IR,
OA,
AO,
MS,
SM,
Mv,
Mw,
M, /* register or memory */
Mb, /* register or memory, always byte sized */
MO, /* memory only (no registers) */
PREF,
SWAPGS,
R,
RA,
SEG,
MR,
RM,
IA,
MA,
SD,
AD,
SA,
D,
INM,
SO,
BD,
I,
P,
V,
DSHIFT, /* for double shift that has an 8-bit immediate */
U,
OVERRIDE,
NORM, /* instructions w/o ModR/M byte, no memory access */
IMPLMEM, /* instructions w/o ModR/M byte, implicit mem access */
O, /* for call */
JTAB, /* jump table */
IMUL, /* for 186 iimul instr */
CBW, /* so data16 can be evaluated for cbw and variants */
MvI, /* for 186 logicals */
ENTER, /* for 186 enter instr */
RMw, /* for 286 arpl instr */
Ib, /* for push immediate byte */
F, /* for 287 instructions */
FF, /* for 287 instructions */
FFC, /* for 287 instructions */
DM, /* 16-bit data */
AM, /* 16-bit addr */
LSEG, /* for 3-bit seg reg encoding */
MIb, /* for 386 logicals */
SREG, /* for 386 special registers */
PREFIX, /* a REP instruction prefix */
LOCK, /* a LOCK instruction prefix */
INT3, /* The int 3 instruction, which has a fake operand */
INTx, /* The normal int instruction, with explicit int num */
DSHIFTcl, /* for double shift that implicitly uses %cl */
CWD, /* so data16 can be evaluated for cwd and variants */
RET, /* single immediate 16-bit operand */
MOVZ, /* for movs and movz, with different size operands */
XADDB, /* for xaddb */
MOVSXZ, /* AMD64 mov sign extend 32 to 64 bit instruction */
/*
* MMX/SIMD addressing modes.
*/
MMO, /* Prefixable MMX/SIMD-Int mm/mem -> mm */
MMOIMPL, /* Prefixable MMX/SIMD-Int mm -> mm (mem) */
MMO3P, /* Prefixable MMX/SIMD-Int mm -> r32,imm8 */
MMOM3, /* Prefixable MMX/SIMD-Int mm -> r32 */
MMOS, /* Prefixable MMX/SIMD-Int mm -> mm/mem */
MMOMS, /* Prefixable MMX/SIMD-Int mm -> mem */
MMOPM, /* MMX/SIMD-Int mm/mem -> mm,imm8 */
MMOPRM, /* Prefixable MMX/SIMD-Int r32/mem -> mm,imm8 */
MMOSH, /* Prefixable MMX mm,imm8 */
MM, /* MMX/SIMD-Int mm/mem -> mm */
MMS, /* MMX/SIMD-Int mm -> mm/mem */
MMSH, /* MMX mm,imm8 */
XMMO, /* Prefixable SIMD xmm/mem -> xmm */
XMMOS, /* Prefixable SIMD xmm -> xmm/mem */
XMMOPM, /* Prefixable SIMD xmm/mem w/to xmm,imm8 */
XMMOMX, /* Prefixable SIMD mm/mem -> xmm */
XMMOX3, /* Prefixable SIMD xmm -> r32 */
XMMOXMM, /* Prefixable SIMD xmm/mem -> mm */
XMMOM, /* Prefixable SIMD xmm -> mem */
XMMOMS, /* Prefixable SIMD mem -> xmm */
XMM, /* SIMD xmm/mem -> xmm */
XMMXIMPL, /* SIMD xmm -> xmm (mem) */
XMM3P, /* SIMD xmm -> r32,imm8 */
XMMP, /* SIMD xmm/mem w/to xmm,imm8 */
XMMPRM, /* SIMD r32/mem -> xmm,imm8 */
XMMS, /* SIMD xmm -> xmm/mem */
XMMM, /* SIMD mem -> xmm */
XMMMS, /* SIMD xmm -> mem */
XMM3MX, /* SIMD r32/mem -> xmm */
XMM3MXS, /* SIMD xmm -> r32/mem */
XMMSH, /* SIMD xmm,imm8 */
XMMXM3, /* SIMD xmm/mem -> r32 */
XMMX3, /* SIMD xmm -> r32 */
XMMXMM, /* SIMD xmm/mem -> mm */
XMMMX, /* SIMD mm -> xmm */
XMMXM, /* SIMD xmm -> mm */
XMMFENCE, /* SIMD lfence or mfence */
XMMSFNC /* SIMD sfence (none or mem) */
};
#define FILL 0x90 /* Fill byte used for alignment (nop) */
/*
** Register numbers for the i386
*/
#define EAX_REGNO 0
#define ECX_REGNO 1
#define EDX_REGNO 2
#define EBX_REGNO 3
#define ESP_REGNO 4
#define EBP_REGNO 5
#define ESI_REGNO 6
#define EDI_REGNO 7
/*
* modes for immediate values
*/
#define MODE_NONE 0
#define MODE_IPREL 1 /* signed IP relative value */
#define MODE_SIGNED 2 /* sign extended immediate */
#define MODE_IMPLIED 3 /* constant value implied from opcode */
#define MODE_OFFSET 4 /* offset part of an address */
/*
* The letters used in these macros are:
* IND - indirect to another to another table
* "T" - means to Terminate indirections (this is the final opcode)
* "S" - means "operand length suffix required"
* "NS" - means "no suffix" which is the operand length suffix of the opcode
* "Z" - means instruction size arg required
* "u" - means the opcode is invalid in IA32 but valid in amd64
* "x" - means the opcode is invalid in amd64, but not IA32
* "y" - means the operand size is always 64 bits in 64 bit mode
* "p" - means push/pop stack operation
*/
#if defined(DIS_TEXT) && defined(DIS_MEM)
#define IND(table) {table, 0, "", 0, 0, 0, 0, 0, 0}
#define INDx(table) {table, 0, "", 0, 0, 1, 0, 0, 0}
#define TNS(name, amode) {TERM, amode, name, 0, 0, 0, 0, 0, 0}
#define TNSu(name, amode) {TERM, amode, name, 0, 0, 0, 0, 1, 0}
#define TNSx(name, amode) {TERM, amode, name, 0, 0, 1, 0, 0, 0}
#define TNSy(name, amode) {TERM, amode, name, 0, 0, 0, 1, 0, 0}
#define TNSyp(name, amode) {TERM, amode, name, 0, 0, 0, 1, 0, 1}
#define TNSZ(name, amode, sz) {TERM, amode, name, 0, sz, 0, 0, 0, 0}
#define TNSZy(name, amode, sz) {TERM, amode, name, 0, sz, 0, 1, 0, 0}
#define TS(name, amode) {TERM, amode, name, 1, 0, 0, 0, 0, 0}
#define TSx(name, amode) {TERM, amode, name, 1, 0, 1, 0, 0, 0}
#define TSy(name, amode) {TERM, amode, name, 1, 0, 0, 1, 0, 0}
#define TSp(name, amode) {TERM, amode, name, 1, 0, 0, 0, 0, 1}
#define TSZ(name, amode, sz) {TERM, amode, name, 1, sz, 0, 0, 0, 0}
#define TSZx(name, amode, sz) {TERM, amode, name, 1, sz, 1, 0, 0, 0}
#define TSZy(name, amode, sz) {TERM, amode, name, 1, sz, 0, 1, 0, 0}
#define INVALID {TERM, UNKNOWN, "", 0, 0, 0, 0, 0}
#elif defined(DIS_TEXT)
#define IND(table) {table, 0, "", 0, 0, 0, 0, 0}
#define INDx(table) {table, 0, "", 0, 1, 0, 0, 0}
#define TNS(name, amode) {TERM, amode, name, 0, 0, 0, 0, 0}
#define TNSu(name, amode) {TERM, amode, name, 0, 0, 0, 1, 0}
#define TNSx(name, amode) {TERM, amode, name, 0, 1, 0, 0, 0}
#define TNSy(name, amode) {TERM, amode, name, 0, 0, 1, 0, 0}
#define TNSyp(name, amode) {TERM, amode, name, 0, 0, 1, 0, 1}
#define TNSZ(name, amode, sz) {TERM, amode, name, 0, 0, 0, 0, 0}
#define TNSZy(name, amode, sz) {TERM, amode, name, 0, 0, 1, 0, 0}
#define TS(name, amode) {TERM, amode, name, 1, 0, 0, 0, 0}
#define TSx(name, amode) {TERM, amode, name, 1, 1, 0, 0, 0}
#define TSy(name, amode) {TERM, amode, name, 1, 0, 1, 0, 0}
#define TSp(name, amode) {TERM, amode, name, 1, 0, 0, 0, 1}
#define TSZ(name, amode, sz) {TERM, amode, name, 1, 0, 0, 0, 0}
#define TSZx(name, amode, sz) {TERM, amode, name, 1, 1, 0, 0, 0}
#define TSZy(name, amode, sz) {TERM, amode, name, 1, 0, 1, 0, 0}
#define INVALID {TERM, UNKNOWN, "", 0, 0, 0, 0, 0}
#elif defined(DIS_MEM)
#define IND(table) {table, 0, 0, 0, 0, 0, 0}
#define INDx(table) {table, 0, 0, 1, 0, 0, 0}
#define TNS(name, amode) {TERM, amode, 0, 0, 0, 0, 0}
#define TNSu(name, amode) {TERM, amode, 0, 0, 0, 1, 0}
#define TNSy(name, amode) {TERM, amode, 0, 0, 1, 0, 0}
#define TNSyp(name, amode) {TERM, amode, 0, 0, 1, 0, 1}
#define TNSx(name, amode) {TERM, amode, 0, 1, 0, 0, 0}
#define TNSZ(name, amode, sz) {TERM, amode, sz, 0, 0, 0, 0}
#define TNSZy(name, amode, sz) {TERM, amode, sz, 0, 1, 0, 0}
#define TS(name, amode) {TERM, amode, 0, 0, 0, 0, 0}
#define TSx(name, amode) {TERM, amode, 0, 1, 0, 0, 0}
#define TSy(name, amode) {TERM, amode, 0, 0, 1, 0, 0}
#define TSp(name, amode) {TERM, amode, 0, 0, 0, 0, 1}
#define TSZ(name, amode, sz) {TERM, amode, sz, 0, 0, 0, 0}
#define TSZx(name, amode, sz) {TERM, amode, sz, 1, 0, 0, 0}
#define TSZy(name, amode, sz) {TERM, amode, sz, 0, 1, 0, 0}
#define INVALID {TERM, UNKNOWN, 0, 0, 0, 0, 0}
#else
#define IND(table) {table[0], 0, 0, 0, 0, 0}
#define INDx(table) {table[0], 0, 1, 0, 0, 0}
#define TNS(name, amode) {TERM, amode, 0, 0, 0, 0}
#define TNSu(name, amode) {TERM, amode, 0, 0, 1, 0}
#define TNSy(name, amode) {TERM, amode, 0, 1, 0, 0}
#define TNSyp(name, amode) {TERM, amode, 0, 1, 0, 1}
#define TNSx(name, amode) {TERM, amode, 1, 0, 0, 0}
#define TNSZ(name, amode, sz) {TERM, amode, 0, 0, 0, 0}
#define TNSZy(name, amode, sz) {TERM, amode, 0, 1, 0, 0}
#define TS(name, amode) {TERM, amode, 0, 0, 0, 0}
#define TSx(name, amode) {TERM, amode, 1, 0, 0, 0}
#define TSy(name, amode) {TERM, amode, 0, 1, 0, 0}
#define TSp(name, amode) {TERM, amode, 0, 0, 0, 1}
#define TSZ(name, amode, sz) {TERM, amode, 0, 0, 0, 0}
#define TSZx(name, amode, sz) {TERM, amode, 1, 0, 0, 0}
#define TSZy(name, amode, sz) {TERM, amode, 0, 1, 0, 0}
#define INVALID {TERM, UNKNOWN, 0, 0, 0, 0}
#endif
#ifdef DIS_TEXT
/*
* this decodes the r_m field for mode's 0, 1, 2 in 16 bit mode
*/
const char *const dis_addr16[3][8] = {
"(%bx,%si)", "(%bx,%di)", "(%bp,%si)", "(%bp,%di)", "(%si)", "(%di)", "",
"(%bx)",
"(%bx,%si)", "(%bx,%di)", "(%bp,%si)", "(%bp,%di)", "(%si)", "(%di", "(%bp)",
"(%bx)",
"(%bx,%si)", "(%bx,%di)", "(%bp,%si)", "(%bp,%di)", "(%si)", "(%di)", "(%bp)",
"(%bx)",
};
/*
* This decodes 32 bit addressing mode r_m field for modes 0, 1, 2
*/
const char *const dis_addr32_mode0[16] = {
"(%eax)", "(%ecx)", "(%edx)", "(%ebx)", "", "", "(%esi)", "(%edi)",
"(%r8d)", "(%r9d)", "(%r10d)", "(%r11d)", "", "", "(%r14d)", "(%r15d)"
};
const char *const dis_addr32_mode12[16] = {
"(%eax)", "(%ecx)", "(%edx)", "(%ebx)", "", "(%ebp)", "(%esi)", "(%edi)",
"(%r8d)", "(%r9d)", "(%r10d)", "(%r11d)", "", "(%r13d)", "(%r14d)", "(%r15d)"
};
/*
* This decodes 64 bit addressing mode r_m field for modes 0, 1, 2
*/
const char *const dis_addr64_mode0[16] = {
"(%rax)", "(%rcx)", "(%rdx)", "(%rbx)", "", "(%rip)", "(%rsi)", "(%rdi)",
"(%r8)", "(%r9)", "(%r10)", "(%r11)", "(%r12)", "(%rip)", "(%r14)", "(%r15)"
};
const char *const dis_addr64_mode12[16] = {
"(%rax)", "(%rcx)", "(%rdx)", "(%rbx)", "", "(%rbp)", "(%rsi)", "(%rdi)",
"(%r8)", "(%r9)", "(%r10)", "(%r11)", "(%r12)", "(%r13)", "(%r14)", "(%r15)"
};
/*
* decode for scale from SIB byte
*/
const char *const dis_scale_factor[4] = { ")", ",2)", ",4)", ",8)" };
/*
* register decoding for normal references to registers (ie. not addressing)
*/
const char *const dis_REG8[16] = {
"%al", "%cl", "%dl", "%bl", "%ah", "%ch", "%dh", "%bh",
"%r8b", "%r9b", "%r10b", "%r11b", "%r12b", "%r13b", "%r14b", "%r15b"
};
const char *const dis_REG8_REX[16] = {
"%al", "%cl", "%dl", "%bl", "%spl", "%bpl", "%sil", "%dil",
"%r8b", "%r9b", "%r10b", "%r11b", "%r12b", "%r13b", "%r14b", "%r15b"
};
const char *const dis_REG16[16] = {
"%ax", "%cx", "%dx", "%bx", "%sp", "%bp", "%si", "%di",
"%r8w", "%r9w", "%r10w", "%r11w", "%r12w", "%r13w", "%r14w", "%r15w"
};
const char *const dis_REG32[16] = {
"%eax", "%ecx", "%edx", "%ebx", "%esp", "%ebp", "%esi", "%edi",
"%r8d", "%r9d", "%r10d", "%r11d", "%r12d", "%r13d", "%r14d", "%r15d"
};
const char *const dis_REG64[16] = {
"%rax", "%rcx", "%rdx", "%rbx", "%rsp", "%rbp", "%rsi", "%rdi",
"%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15"
};
const char *const dis_DEBUGREG[16] = {
"%db0", "%db1", "%db2", "%db3", "%db4", "%db5", "%db6", "%db7",
"%db8", "%db9", "%db10", "%db11", "%db12", "%db13", "%db14", "%db15"
};
const char *const dis_CONTROLREG[16] = {
"%cr0", "%cr1", "%cr2", "%cr3", "%cr4", "%cr5?", "%cr6?", "%cr7?",
"%cr8", "%cr9?", "%cr10?", "%cr11?", "%cr12?", "%cr13?", "%cr14?", "%cr15?"
};
const char *const dis_TESTREG[16] = {
"%tr0?", "%tr1?", "%tr2?", "%tr3", "%tr4", "%tr5", "%tr6", "%tr7",
"%tr0?", "%tr1?", "%tr2?", "%tr3", "%tr4", "%tr5", "%tr6", "%tr7"
};
const char *const dis_MMREG[16] = {
"%mm0", "%mm1", "%mm2", "%mm3", "%mm4", "%mm5", "%mm6", "%mm7",
"%mm0", "%mm1", "%mm2", "%mm3", "%mm4", "%mm5", "%mm6", "%mm7"
};
const char *const dis_XMMREG[16] = {
"%xmm0", "%xmm1", "%xmm2", "%xmm3", "%xmm4", "%xmm5", "%xmm6", "%xmm7",
"%xmm8", "%xmm9", "%xmm10", "%xmm11", "%xmm12", "%xmm13", "%xmm14", "%xmm15"
};
const char *const dis_SEGREG[16] = {
"%es", "%cs", "%ss", "%ds", "%fs", "%gs", "<reserved>", "<reserved>",
"%es", "%cs", "%ss", "%ds", "%fs", "%gs", "<reserved>", "<reserved>"
};
/*
* SIMD predicate suffixes
*/
const char *const dis_PREDSUFFIX[8] = {
"eq", "lt", "le", "unord", "neq", "nlt", "nle", "ord"
};
#endif /* DIS_TEXT */
/*
* "decode table" for 64 bit mode MOVSXD instruction (opcode 0x63)
*/
const instable_t dis_opMOVSLD = TNS("movslq",MOVSXZ);
/*
* "decode table" for pause and clflush instructions
*/
const instable_t dis_opPause = TNS("pause", NORM);
/*
* Decode table for 0x0F00 opcodes
*/
const instable_t dis_op0F00[8] = {
/* [0] */ TNS("sldt",M), TNS("str",M), TNSy("lldt",M), TNSy("ltr",M),
/* [4] */ TNSZ("verr",M,2), TNSZ("verw",M,2), INVALID, INVALID,
};
/*
* Decode table for 0x0F01 opcodes
*/
const instable_t dis_op0F01[8] = {
/* [0] */ TNSZ("sgdt",MO,6), TNSZ("sidt",MO,6), TNSZ("lgdt",MO,6), TNSZ("lidt",MO,6),
/* [4] */ TNSZ("smsw",M,2), INVALID, TNSZ("lmsw",M,2), TNS("invlpg",SWAPGS),
};
/*
* Decode table for 0x0F18 opcodes -- SIMD prefetch
*/
const instable_t dis_op0F18[8] = {
/* [0] */ TNS("prefetchnta",PREF),TNS("prefetcht0",PREF), TNS("prefetcht1",PREF), TNS("prefetcht2",PREF),
/* [4] */ INVALID, INVALID, INVALID, INVALID,
};
/*
* Decode table for 0x0FAE opcodes -- SIMD state save/restore
*/
const instable_t dis_op0FAE[8] = {
/* [0] */ TNSZ("fxsave",M,512), TNSZ("fxrstor",M,512), TNS("ldmxcsr",M), TNS("stmxcsr",M),
/* [4] */ INVALID, TNS("lfence",XMMFENCE), TNS("mfence",XMMFENCE), TNS("sfence",XMMSFNC),
};
/*
* Decode table for 0x0FBA opcodes
*/
const instable_t dis_op0FBA[8] = {
/* [0] */ INVALID, INVALID, INVALID, INVALID,
/* [4] */ TS("bt",MIb), TS("bts",MIb), TS("btr",MIb), TS("btc",MIb),
};
/*
* Decode table for 0x0FC7 opcode
*/
const instable_t dis_op0FC7[8] = {
/* [0] */ INVALID, TNS("cmpxchg8b",M), INVALID, INVALID,
/* [4] */ INVALID, INVALID, INVALID, INVALID,
};
/*
* Decode table for 0x0FC8 opcode -- 486 bswap instruction
*
*bit pattern: 0000 1111 1100 1reg
*/
const instable_t dis_op0FC8[4] = {
/* [0] */ TNS("bswap",R), INVALID, INVALID, INVALID,
};
/*
* Decode table for 0x0F71, 0x0F72, and 0x0F73 opcodes -- MMX instructions
*/
const instable_t dis_op0F7123[4][8] = {
{
/* [70].0 */ INVALID, INVALID, INVALID, INVALID,
/* .4 */ INVALID, INVALID, INVALID, INVALID,
}, {
/* [71].0 */ INVALID, INVALID, TNS("psrlw",MMOSH), INVALID,
/* .4 */ TNS("psraw",MMOSH), INVALID, TNS("psllw",MMOSH), INVALID,
}, {
/* [72].0 */ INVALID, INVALID, TNS("psrld",MMOSH), INVALID,
/* .4 */ TNS("psrad",MMOSH), INVALID, TNS("pslld",MMOSH), INVALID,
}, {
/* [73].0 */ INVALID, INVALID, TNS("psrlq",MMOSH), TNS("INVALID",MMOSH),
/* .4 */ INVALID, INVALID, TNS("psllq",MMOSH), TNS("INVALID",MMOSH),
} };
/*
* Decode table for SIMD extensions to above 0x0F71-0x0F73 opcodes.
*/
const instable_t dis_opSIMD7123[32] = {
/* [70].0 */ INVALID, INVALID, INVALID, INVALID,
/* .4 */ INVALID, INVALID, INVALID, INVALID,
/* [71].0 */ INVALID, INVALID, TNS("psrlw",XMMSH), INVALID,
/* .4 */ TNS("psraw",XMMSH), INVALID, TNS("psllw",XMMSH), INVALID,
/* [72].0 */ INVALID, INVALID, TNS("psrld",XMMSH), INVALID,
/* .4 */ TNS("psrad",XMMSH), INVALID, TNS("pslld",XMMSH), INVALID,
/* [73].0 */ INVALID, INVALID, TNS("psrlq",XMMSH), TNS("psrldq",XMMSH),
/* .4 */ INVALID, INVALID, TNS("psllq",XMMSH), TNS("pslldq",XMMSH),
};
/*
* SIMD instructions have been wedged into the existing IA32 instruction
* set through the use of prefixes. That is, while 0xf0 0x58 may be
* addps, 0xf3 0xf0 0x58 (literally, repz addps) is a completely different
* instruction - addss. At present, three prefixes have been coopted in
* this manner - address size (0x66), repnz (0xf2) and repz (0xf3). The
* following tables are used to provide the prefixed instruction names.
* The arrays are sparse, but they're fast.
*/
/*
* Decode table for SIMD instructions with the address size (0x66) prefix.
*/
const instable_t dis_opSIMDdata16[256] = {
/* [00] */ INVALID, INVALID, INVALID, INVALID,
/* [04] */ INVALID, INVALID, INVALID, INVALID,
/* [08] */ INVALID, INVALID, INVALID, INVALID,
/* [0C] */ INVALID, INVALID, INVALID, INVALID,
/* [10] */ TNSZ("movupd",XMM,16), TNSZ("movupd",XMMS,16), TNSZ("movlpd",XMMM,8), TNSZ("movlpd",XMMMS,8),
/* [14] */ TNSZ("unpcklpd",XMM,16),TNSZ("unpckhpd",XMM,16),TNSZ("movhpd",XMMM,8), TNSZ("movhpd",XMMMS,8),
/* [18] */ INVALID, INVALID, INVALID, INVALID,
/* [1C] */ INVALID, INVALID, INVALID, INVALID,
/* [20] */ INVALID, INVALID, INVALID, INVALID,
/* [24] */ INVALID, INVALID, INVALID, INVALID,
/* [28] */ TNSZ("movapd",XMM,16), TNSZ("movapd",XMMS,16), TNSZ("cvtpi2pd",XMMOMX,8),TNSZ("movntpd",XMMOMS,16),
/* [2C] */ TNSZ("cvttpd2pi",XMMXMM,16),TNSZ("cvtpd2pi",XMMXMM,16),TNSZ("ucomisd",XMM,8),TNSZ("comisd",XMM,8),
/* [30] */ INVALID, INVALID, INVALID, INVALID,
/* [34] */ INVALID, INVALID, INVALID, INVALID,
/* [38] */ INVALID, INVALID, INVALID, INVALID,
/* [3C] */ INVALID, INVALID, INVALID, INVALID,
/* [40] */ INVALID, INVALID, INVALID, INVALID,
/* [44] */ INVALID, INVALID, INVALID, INVALID,
/* [48] */ INVALID, INVALID, INVALID, INVALID,
/* [4C] */ INVALID, INVALID, INVALID, INVALID,
/* [50] */ TNS("movmskpd",XMMOX3), TNSZ("sqrtpd",XMM,16), INVALID, INVALID,
/* [54] */ TNSZ("andpd",XMM,16), TNSZ("andnpd",XMM,16), TNSZ("orpd",XMM,16), TNSZ("xorpd",XMM,16),
/* [58] */ TNSZ("addpd",XMM,16), TNSZ("mulpd",XMM,16), TNSZ("cvtpd2ps",XMM,16),TNSZ("cvtps2dq",XMM,16),
/* [5C] */ TNSZ("subpd",XMM,16), TNSZ("minpd",XMM,16), TNSZ("divpd",XMM,16), TNSZ("maxpd",XMM,16),
/* [60] */ TNSZ("punpcklbw",XMM,16),TNSZ("punpcklwd",XMM,16),TNSZ("punpckldq",XMM,16),TNSZ("packsswb",XMM,16),
/* [64] */ TNSZ("pcmpgtb",XMM,16), TNSZ("pcmpgtw",XMM,16), TNSZ("pcmpgtd",XMM,16), TNSZ("packuswb",XMM,16),
/* [68] */ TNSZ("punpckhbw",XMM,16),TNSZ("punpckhwd",XMM,16),TNSZ("punpckhdq",XMM,16),TNSZ("packssdw",XMM,16),
/* [6C] */ TNSZ("punpcklqdq",XMM,16),TNSZ("punpckhqdq",XMM,16),TNSZ("movd",XMM3MX,4),TNSZ("movdqa",XMM,16),
/* [70] */ TNSZ("pshufd",XMMP,16), INVALID, INVALID, INVALID,
/* [74] */ TNSZ("pcmpeqb",XMM,16), TNSZ("pcmpeqw",XMM,16), TNSZ("pcmpeqd",XMM,16), INVALID,
/* [78] */ INVALID, INVALID, INVALID, INVALID,
/* [7C] */ INVALID, INVALID, TNSZ("movd",XMM3MXS,4), TNSZ("movdqa",XMMS,16),
/* [80] */ INVALID, INVALID, INVALID, INVALID,
/* [84] */ INVALID, INVALID, INVALID, INVALID,
/* [88] */ INVALID, INVALID, INVALID, INVALID,
/* [8C] */ INVALID, INVALID, INVALID, INVALID,
/* [90] */ INVALID, INVALID, INVALID, INVALID,
/* [94] */ INVALID, INVALID, INVALID, INVALID,
/* [98] */ INVALID, INVALID, INVALID, INVALID,
/* [9C] */ INVALID, INVALID, INVALID, INVALID,
/* [A0] */ INVALID, INVALID, INVALID, INVALID,
/* [A4] */ INVALID, INVALID, INVALID, INVALID,
/* [A8] */ INVALID, INVALID, INVALID, INVALID,
/* [AC] */ INVALID, INVALID, INVALID, INVALID,
/* [B0] */ INVALID, INVALID, INVALID, INVALID,
/* [B4] */ INVALID, INVALID, INVALID, INVALID,
/* [B8] */ INVALID, INVALID, INVALID, INVALID,
/* [BC] */ INVALID, INVALID, INVALID, INVALID,
/* [C0] */ INVALID, INVALID, TNSZ("cmppd",XMMP,16), INVALID,
/* [C4] */ TNSZ("pinsrw",XMMPRM,2),TNS("pextrw",XMM3P), TNSZ("shufpd",XMMP,16), INVALID,
/* [C8] */ INVALID, INVALID, INVALID, INVALID,
/* [CC] */ INVALID, INVALID, INVALID, INVALID,
/* [D0] */ INVALID, TNSZ("psrlw",XMM,16), TNSZ("psrld",XMM,16), TNSZ("psrlq",XMM,16),
/* [D4] */ TNSZ("paddq",XMM,16), TNSZ("pmullw",XMM,16), TNSZ("movq",XMMS,8), TNS("pmovmskb",XMMX3),
/* [D8] */ TNSZ("psubusb",XMM,16), TNSZ("psubusw",XMM,16), TNSZ("pminub",XMM,16), TNSZ("pand",XMM,16),
/* [DC] */ TNSZ("paddusb",XMM,16), TNSZ("paddusw",XMM,16), TNSZ("pmaxub",XMM,16), TNSZ("pandn",XMM,16),
/* [E0] */ TNSZ("pavgb",XMM,16), TNSZ("psraw",XMM,16), TNSZ("psrad",XMM,16), TNSZ("pavgw",XMM,16),
/* [E4] */ TNSZ("pmulhuw",XMM,16), TNSZ("pmulhw",XMM,16), TNSZ("cvttpd2dq",XMM,16),TNSZ("movntdq",XMMS,16),
/* [E8] */ TNSZ("psubsb",XMM,16), TNSZ("psubsw",XMM,16), TNSZ("pminsw",XMM,16), TNSZ("por",XMM,16),
/* [EC] */ TNSZ("paddsb",XMM,16), TNSZ("paddsw",XMM,16), TNSZ("pmaxsw",XMM,16), TNSZ("pxor",XMM,16),
/* [F0] */ INVALID, TNSZ("psllw",XMM,16), TNSZ("pslld",XMM,16), TNSZ("psllq",XMM,16),
/* [F4] */ TNSZ("pmuludq",XMM,16), TNSZ("pmaddwd",XMM,16), TNSZ("psadbw",XMM,16), TNSZ("maskmovdqu", XMMXIMPL,16),
/* [F8] */ TNSZ("psubb",XMM,16), TNSZ("psubw",XMM,16), TNSZ("psubd",XMM,16), TNSZ("psubq",XMM,16),
/* [FC] */ TNSZ("paddb",XMM,16), TNSZ("paddw",XMM,16), TNSZ("paddd",XMM,16), INVALID,
};
/*
* Decode table for SIMD instructions with the repnz (0xf2) prefix.
*/
const instable_t dis_opSIMDrepnz[256] = {
/* [00] */ INVALID, INVALID, INVALID, INVALID,
/* [04] */ INVALID, INVALID, INVALID, INVALID,
/* [08] */ INVALID, INVALID, INVALID, INVALID,
/* [0C] */ INVALID, INVALID, INVALID, INVALID,
/* [10] */ TNSZ("movsd",XMM,8), TNSZ("movsd",XMMS,8), INVALID, INVALID,
/* [14] */ INVALID, INVALID, INVALID, INVALID,
/* [18] */ INVALID, INVALID, INVALID, INVALID,
/* [1C] */ INVALID, INVALID, INVALID, INVALID,
/* [20] */ INVALID, INVALID, INVALID, INVALID,
/* [24] */ INVALID, INVALID, INVALID, INVALID,
/* [28] */ INVALID, INVALID, TNSZ("cvtsi2sd",XMM3MX,4),INVALID,
/* [2C] */ TNSZ("cvttsd2si",XMMXM3,8),TNSZ("cvtsd2si",XMMXM3,8),INVALID, INVALID,
/* [30] */ INVALID, INVALID, INVALID, INVALID,
/* [34] */ INVALID, INVALID, INVALID, INVALID,
/* [38] */ INVALID, INVALID, INVALID, INVALID,
/* [3C] */ INVALID, INVALID, INVALID, INVALID,
/* [40] */ INVALID, INVALID, INVALID, INVALID,
/* [44] */ INVALID, INVALID, INVALID, INVALID,
/* [48] */ INVALID, INVALID, INVALID, INVALID,
/* [4C] */ INVALID, INVALID, INVALID, INVALID,
/* [50] */ INVALID, TNSZ("sqrtsd",XMM,8), INVALID, INVALID,
/* [54] */ INVALID, INVALID, INVALID, INVALID,
/* [58] */ TNSZ("addsd",XMM,8), TNSZ("mulsd",XMM,8), TNSZ("cvtsd2ss",XMM,8), INVALID,
/* [5C] */ TNSZ("subsd",XMM,8), TNSZ("minsd",XMM,8), TNSZ("divsd",XMM,8), TNSZ("maxsd",XMM,8),
/* [60] */ INVALID, INVALID, INVALID, INVALID,
/* [64] */ INVALID, INVALID, INVALID, INVALID,
/* [68] */ INVALID, INVALID, INVALID, INVALID,
/* [6C] */ INVALID, INVALID, INVALID, INVALID,
/* [70] */ TNSZ("pshuflw",XMMP,16),INVALID, INVALID, INVALID,
/* [74] */ INVALID, INVALID, INVALID, INVALID,
/* [78] */ INVALID, INVALID, INVALID, INVALID,
/* [7C] */ INVALID, INVALID, INVALID, INVALID,
/* [80] */ INVALID, INVALID, INVALID, INVALID,
/* [84] */ INVALID, INVALID, INVALID, INVALID,
/* [88] */ INVALID, INVALID, INVALID, INVALID,
/* [0C] */ INVALID, INVALID, INVALID, INVALID,
/* [90] */ INVALID, INVALID, INVALID, INVALID,
/* [94] */ INVALID, INVALID, INVALID, INVALID,
/* [98] */ INVALID, INVALID, INVALID, INVALID,
/* [9C] */ INVALID, INVALID, INVALID, INVALID,
/* [A0] */ INVALID, INVALID, INVALID, INVALID,
/* [A4] */ INVALID, INVALID, INVALID, INVALID,
/* [A8] */ INVALID, INVALID, INVALID, INVALID,
/* [AC] */ INVALID, INVALID, INVALID, INVALID,
/* [B0] */ INVALID, INVALID, INVALID, INVALID,
/* [B4] */ INVALID, INVALID, INVALID, INVALID,
/* [B8] */ INVALID, INVALID, INVALID, INVALID,
/* [BC] */ INVALID, INVALID, INVALID, INVALID,
/* [C0] */ INVALID, INVALID, TNSZ("cmpsd",XMMP,8), INVALID,
/* [C4] */ INVALID, INVALID, INVALID, INVALID,
/* [C8] */ INVALID, INVALID, INVALID, INVALID,
/* [CC] */ INVALID, INVALID, INVALID, INVALID,
/* [D0] */ INVALID, INVALID, INVALID, INVALID,
/* [D4] */ INVALID, INVALID, TNS("movdq2q",XMMXM), INVALID,
/* [D8] */ INVALID, INVALID, INVALID, INVALID,
/* [DC] */ INVALID, INVALID, INVALID, INVALID,
/* [E0] */ INVALID, INVALID, INVALID, INVALID,
/* [E4] */ INVALID, INVALID, TNSZ("cvtpd2dq",XMM,16),INVALID,
/* [E8] */ INVALID, INVALID, INVALID, INVALID,
/* [EC] */ INVALID, INVALID, INVALID, INVALID,
/* [F0] */ INVALID, INVALID, INVALID, INVALID,
/* [F4] */ INVALID, INVALID, INVALID, INVALID,
/* [F8] */ INVALID, INVALID, INVALID, INVALID,
/* [FC] */ INVALID, INVALID, INVALID, INVALID,
};
/*
* Decode table for SIMD instructions with the repz (0xf3) prefix.
*/
const instable_t dis_opSIMDrepz[256] = {
/* [00] */ INVALID, INVALID, INVALID, INVALID,
/* [04] */ INVALID, INVALID, INVALID, INVALID,
/* [08] */ INVALID, INVALID, INVALID, INVALID,
/* [0C] */ INVALID, INVALID, INVALID, INVALID,
/* [10] */ TNSZ("movss",XMM,4), TNSZ("movss",XMMS,4), INVALID, INVALID,
/* [14] */ INVALID, INVALID, INVALID, INVALID,
/* [18] */ INVALID, INVALID, INVALID, INVALID,
/* [1C] */ INVALID, INVALID, INVALID, INVALID,
/* [20] */ INVALID, INVALID, INVALID, INVALID,
/* [24] */ INVALID, INVALID, INVALID, INVALID,
/* [28] */ INVALID, INVALID, TNSZ("cvtsi2ss",XMM3MX,4),INVALID,
/* [2C] */ TNSZ("cvttss2si",XMMXM3,4),TNSZ("cvtss2si",XMMXM3,4),INVALID, INVALID,
/* [30] */ INVALID, INVALID, INVALID, INVALID,
/* [34] */ INVALID, INVALID, INVALID, INVALID,
/* [38] */ INVALID, INVALID, INVALID, INVALID,
/* [3C] */ INVALID, INVALID, INVALID, INVALID,
/* [40] */ INVALID, INVALID, INVALID, INVALID,
/* [44] */ INVALID, INVALID, INVALID, INVALID,
/* [48] */ INVALID, INVALID, INVALID, INVALID,
/* [4C] */ INVALID, INVALID, INVALID, INVALID,
/* [50] */ INVALID, TNSZ("sqrtss",XMM,4), TNSZ("rsqrtss",XMM,4), TNSZ("rcpss",XMM,4),
/* [54] */ INVALID, INVALID, INVALID, INVALID,
/* [58] */ TNSZ("addss",XMM,4), TNSZ("mulss",XMM,4), TNSZ("cvtss2sd",XMM,4), TNSZ("cvttps2dq",XMM,16),
/* [5C] */ TNSZ("subss",XMM,4), TNSZ("minss",XMM,4), TNSZ("divss",XMM,4), TNSZ("maxss",XMM,4),
/* [60] */ INVALID, INVALID, INVALID, INVALID,
/* [64] */ INVALID, INVALID, INVALID, INVALID,
/* [68] */ INVALID, INVALID, INVALID, INVALID,
/* [6C] */ INVALID, INVALID, INVALID, TNSZ("movdqu",XMM,16),
/* [70] */ TNSZ("pshufhw",XMMP,16),INVALID, INVALID, INVALID,
/* [74] */ INVALID, INVALID, INVALID, INVALID,
/* [78] */ INVALID, INVALID, INVALID, INVALID,
/* [7C] */ INVALID, INVALID, TNSZ("movq",XMM,8), TNSZ("movdqu",XMMS,16),
/* [80] */ INVALID, INVALID, INVALID, INVALID,
/* [84] */ INVALID, INVALID, INVALID, INVALID,
/* [88] */ INVALID, INVALID, INVALID, INVALID,
/* [0C] */ INVALID, INVALID, INVALID, INVALID,
/* [90] */ INVALID, INVALID, INVALID, INVALID,
/* [94] */ INVALID, INVALID, INVALID, INVALID,
/* [98] */ INVALID, INVALID, INVALID, INVALID,
/* [9C] */ INVALID, INVALID, INVALID, INVALID,
/* [A0] */ INVALID, INVALID, INVALID, INVALID,
/* [A4] */ INVALID, INVALID, INVALID, INVALID,
/* [A8] */ INVALID, INVALID, INVALID, INVALID,
/* [AC] */ INVALID, INVALID, INVALID, INVALID,
/* [B0] */ INVALID, INVALID, INVALID, INVALID,
/* [B4] */ INVALID, INVALID, INVALID, INVALID,
/* [B8] */ INVALID, INVALID, INVALID, INVALID,
/* [BC] */ INVALID, INVALID, INVALID, INVALID,
/* [C0] */ INVALID, INVALID, TNSZ("cmpss",XMMP,4), INVALID,
/* [C4] */ INVALID, INVALID, INVALID, INVALID,
/* [C8] */ INVALID, INVALID, INVALID, INVALID,
/* [CC] */ INVALID, INVALID, INVALID, INVALID,
/* [D0] */ INVALID, INVALID, INVALID, INVALID,
/* [D4] */ INVALID, INVALID, TNS("movq2dq",XMMMX), INVALID,
/* [D8] */ INVALID, INVALID, INVALID, INVALID,
/* [DC] */ INVALID, INVALID, INVALID, INVALID,
/* [E0] */ INVALID, INVALID, INVALID, INVALID,
/* [E4] */ INVALID, INVALID, TNSZ("cvtdq2pd",XMM,8), INVALID,
/* [E8] */ INVALID, INVALID, INVALID, INVALID,
/* [EC] */ INVALID, INVALID, INVALID, INVALID,
/* [F0] */ INVALID, INVALID, INVALID, INVALID,
/* [F4] */ INVALID, INVALID, INVALID, INVALID,
/* [F8] */ INVALID, INVALID, INVALID, INVALID,
/* [FC] */ INVALID, INVALID, INVALID, INVALID,
};
/*
* Decode table for 0x0F opcodes
*/
const instable_t dis_op0F[16][16] = {
{
/* [00] */ IND(dis_op0F00), IND(dis_op0F01), TNS("lar",MR), TNS("lsl",MR),
/* [04] */ INVALID, TNS("syscall",NORM), TNS("clts",NORM), TNS("sysret",NORM),
/* [08] */ TNS("invd",NORM), TNS("wbinvd",NORM), INVALID, TNS("ud2",NORM),
/* [0C] */ INVALID, INVALID, INVALID, INVALID,
}, {
/* [10] */ TNSZ("movups",XMMO,16), TNSZ("movups",XMMOS,16),TNSZ("movlps",XMMO,8), TNSZ("movlps",XMMOS,8),
/* [14] */ TNSZ("unpcklps",XMMO,16),TNSZ("unpckhps",XMMO,16),TNSZ("movhps",XMMOM,8),TNSZ("movhps",XMMOMS,8),
/* [18] */ IND(dis_op0F18), INVALID, INVALID, INVALID,
/* [1C] */ INVALID, INVALID, INVALID, TS("nopw", Mw),
}, {
/* [20] */ TSy("mov",SREG), TSy("mov",SREG), TSy("mov",SREG), TSy("mov",SREG),
/* [24] */ TSx("mov",SREG), INVALID, TSx("mov",SREG), INVALID,
/* [28] */ TNSZ("movaps",XMMO,16), TNSZ("movaps",XMMOS,16),TNSZ("cvtpi2ps",XMMOMX,8),TNSZ("movntps",XMMOS,16),
/* [2C] */ TNSZ("cvttps2pi",XMMOXMM,8),TNSZ("cvtps2pi",XMMOXMM,8),TNSZ("ucomiss",XMMO,4),TNSZ("comiss",XMMO,4),
}, {
/* [30] */ TNS("wrmsr",NORM), TNS("rdtsc",NORM), TNS("rdmsr",NORM), TNS("rdpmc",NORM),
/* [34] */ TNSx("sysenter",NORM), TNSx("sysexit",NORM), INVALID, INVALID,
/* [38] */ INVALID, INVALID, INVALID, INVALID,
/* [3C] */ INVALID, INVALID, INVALID, INVALID,
}, {
/* [40] */ TS("cmovx.o",MR), TS("cmovx.no",MR), TS("cmovx.b",MR), TS("cmovx.ae",MR),
/* [44] */ TS("cmovx.e",MR), TS("cmovx.ne",MR), TS("cmovx.be",MR), TS("cmovx.a",MR),
/* [48] */ TS("cmovx.s",MR), TS("cmovx.ns",MR), TS("cmovx.pe",MR), TS("cmovx.po",MR),
/* [4C] */ TS("cmovx.l",MR), TS("cmovx.ge",MR), TS("cmovx.le",MR), TS("cmovx.g",MR),
}, {
/* [50] */ TNS("movmskps",XMMOX3), TNSZ("sqrtps",XMMO,16), TNSZ("rsqrtps",XMMO,16),TNSZ("rcpps",XMMO,16),
/* [54] */ TNSZ("andps",XMMO,16), TNSZ("andnps",XMMO,16), TNSZ("orps",XMMO,16), TNSZ("xorps",XMMO,16),
/* [58] */ TNSZ("addps",XMMO,16), TNSZ("mulps",XMMO,16), TNSZ("cvtps2pd",XMMO,8),TNSZ("cvtdq2ps",XMMO,16),
/* [5C] */ TNSZ("subps",XMMO,16), TNSZ("minps",XMMO,16), TNSZ("divps",XMMO,16), TNSZ("maxps",XMMO,16),
}, {
/* [60] */ TNSZ("punpcklbw",MMO,4),TNSZ("punpcklwd",MMO,4),TNSZ("punpckldq",MMO,4),TNSZ("packsswb",MMO,8),
/* [64] */ TNSZ("pcmpgtb",MMO,8), TNSZ("pcmpgtw",MMO,8), TNSZ("pcmpgtd",MMO,8), TNSZ("packuswb",MMO,8),
/* [68] */ TNSZ("punpckhbw",MMO,8),TNSZ("punpckhwd",MMO,8),TNSZ("punpckhdq",MMO,8),TNSZ("packssdw",MMO,8),
/* [6C] */ TNSZ("INVALID",MMO,0), TNSZ("INVALID",MMO,0), TNSZ("movd",MMO,4), TNSZ("movq",MMO,8),
}, {
/* [70] */ TNSZ("pshufw",MMOPM,8), TNS("psrXXX",MR), TNS("psrXXX",MR), TNS("psrXXX",MR),
/* [74] */ TNSZ("pcmpeqb",MMO,8), TNSZ("pcmpeqw",MMO,8), TNSZ("pcmpeqd",MMO,8), TNS("emms",NORM),
/* [78] */ INVALID, INVALID, INVALID, INVALID,
/* [7C] */ INVALID, INVALID, TNSZ("movd",MMOS,4), TNSZ("movq",MMOS,8),
}, {
/* [80] */ TNS("jo",D), TNS("jno",D), TNS("jb",D), TNS("jae",D),
/* [84] */ TNS("je",D), TNS("jne",D), TNS("jbe",D), TNS("ja",D),
/* [88] */ TNS("js",D), TNS("jns",D), TNS("jp",D), TNS("jnp",D),
/* [8C] */ TNS("jl",D), TNS("jge",D), TNS("jle",D), TNS("jg",D),
}, {
/* [90] */ TNS("seto",Mb), TNS("setno",Mb), TNS("setb",Mb), TNS("setae",Mb),
/* [94] */ TNS("sete",Mb), TNS("setne",Mb), TNS("setbe",Mb), TNS("seta",Mb),
/* [98] */ TNS("sets",Mb), TNS("setns",Mb), TNS("setp",Mb), TNS("setnp",Mb),
/* [9C] */ TNS("setl",Mb), TNS("setge",Mb), TNS("setle",Mb), TNS("setg",Mb),
}, {
/* [A0] */ TSp("push",LSEG), TSp("pop",LSEG), TNS("cpuid",NORM), TS("bt",RMw),
/* [A4] */ TS("shld",DSHIFT), TS("shld",DSHIFTcl), INVALID, INVALID,
/* [A8] */ TSp("push",LSEG), TSp("pop",LSEG), TNS("rsm",NORM), TS("bts",RMw),
/* [AC] */ TS("shrd",DSHIFT), TS("shrd",DSHIFTcl), IND(dis_op0FAE), TS("imul",MRw),
}, {
/* [B0] */ TNS("cmpxchgb",RMw), TS("cmpxchg",RMw), TS("lss",MR), TS("btr",RMw),
/* [B4] */ TS("lfs",MR), TS("lgs",MR), TS("movzb",MOVZ), TNS("movzwl",MOVZ),
/* [B8] */ INVALID, INVALID, IND(dis_op0FBA), TS("btc",RMw),
/* [BC] */ TS("bsf",MRw), TS("bsr",MRw), TS("movsb",MOVZ), TNS("movswl",MOVZ),
}, {
/* [C0] */ TNS("xaddb",XADDB), TS("xadd",RMw), TNSZ("cmpps",XMMOPM,16),TNS("movnti",RM),
/* [C4] */ TNSZ("pinsrw",MMOPRM,2),TNS("pextrw",MMO3P), TNSZ("shufps",XMMOPM,16),IND(dis_op0FC7),
/* [C8] */ INVALID, INVALID, INVALID, INVALID,
/* [CC] */ INVALID, INVALID, INVALID, INVALID,
}, {
/* [D0] */ INVALID, TNSZ("psrlw",MMO,8), TNSZ("psrld",MMO,8), TNSZ("psrlq",MMO,8),
/* [D4] */ TNSZ("paddq",MMO,8), TNSZ("pmullw",MMO,8), TNSZ("INVALID",MMO,0), TNS("pmovmskb",MMOM3),
/* [D8] */ TNSZ("psubusb",MMO,8), TNSZ("psubusw",MMO,8), TNSZ("pminub",MMO,8), TNSZ("pand",MMO,8),
/* [DC] */ TNSZ("paddusb",MMO,8), TNSZ("paddusw",MMO,8), TNSZ("pmaxub",MMO,8), TNSZ("pandn",MMO,8),
}, {
/* [E0] */ TNSZ("pavgb",MMO,8), TNSZ("psraw",MMO,8), TNSZ("psrad",MMO,8), TNSZ("pavgw",MMO,8),
/* [E4] */ TNSZ("pmulhuw",MMO,8), TNSZ("pmulhw",MMO,8), TNS("INVALID",XMMO), TNSZ("movntq",MMOMS,8),
/* [E8] */ TNSZ("psubsb",MMO,8), TNSZ("psubsw",MMO,8), TNSZ("pminsw",MMO,8), TNSZ("por",MMO,8),
/* [EC] */ TNSZ("paddsb",MMO,8), TNSZ("paddsw",MMO,8), TNSZ("pmaxsw",MMO,8), TNSZ("pxor",MMO,8),
}, {
/* [F0] */ INVALID, TNSZ("psllw",MMO,8), TNSZ("pslld",MMO,8), TNSZ("psllq",MMO,8),
/* [F4] */ TNSZ("pmuludq",MMO,8), TNSZ("pmaddwd",MMO,8), TNSZ("psadbw",MMO,8), TNSZ("maskmovq",MMOIMPL,8),
/* [F8] */ TNSZ("psubb",MMO,8), TNSZ("psubw",MMO,8), TNSZ("psubd",MMO,8), TNSZ("psubq",MMO,8),
/* [FC] */ TNSZ("paddb",MMO,8), TNSZ("paddw",MMO,8), TNSZ("paddd",MMO,8), INVALID,
} };
/*
* Decode table for 0x80 opcodes
*/
const instable_t dis_op80[8] = {
/* [0] */ TNS("addb",IMlw), TNS("orb",IMw), TNS("adcb",IMlw), TNS("sbbb",IMlw),
/* [4] */ TNS("andb",IMw), TNS("subb",IMlw), TNS("xorb",IMw), TNS("cmpb",IMlw),
};
/*
* Decode table for 0x81 opcodes.
*/
const instable_t dis_op81[8] = {
/* [0] */ TS("add",IMlw), TS("or",IMw), TS("adc",IMlw), TS("sbb",IMlw),
/* [4] */ TS("and",IMw), TS("sub",IMlw), TS("xor",IMw), TS("cmp",IMlw),
};
/*
* Decode table for 0x82 opcodes.
*/
const instable_t dis_op82[8] = {
/* [0] */ TNSx("addb",IMlw), TNSx("orb",IMlw), TNSx("adcb",IMlw), TNSx("sbbb",IMlw),
/* [4] */ TNSx("andb",IMlw), TNSx("subb",IMlw), TNSx("xorb",IMlw), TNSx("cmpb",IMlw),
};
/*
* Decode table for 0x83 opcodes.
*/
const instable_t dis_op83[8] = {
/* [0] */ TS("add",IMlw), TS("or",IMlw), TS("adc",IMlw), TS("sbb",IMlw),
/* [4] */ TS("and",IMlw), TS("sub",IMlw), TS("xor",IMlw), TS("cmp",IMlw),
};
/*
* Decode table for 0xC0 opcodes.
*/
const instable_t dis_opC0[8] = {
/* [0] */ TNS("rolb",MvI), TNS("rorb",MvI), TNS("rclb",MvI), TNS("rcrb",MvI),
/* [4] */ TNS("shlb",MvI), TNS("shrb",MvI), INVALID, TNS("sarb",MvI),
};
/*
* Decode table for 0xD0 opcodes.
*/
const instable_t dis_opD0[8] = {
/* [0] */ TNS("rolb",Mv), TNS("rorb",Mv), TNS("rclb",Mv), TNS("rcrb",Mv),
/* [4] */ TNS("shlb",Mv), TNS("shrb",Mv), TNS("salb",Mv), TNS("sarb",Mv),
};
/*
* Decode table for 0xC1 opcodes.
* 186 instruction set
*/
const instable_t dis_opC1[8] = {
/* [0] */ TS("rol",MvI), TS("ror",MvI), TS("rcl",MvI), TS("rcr",MvI),
/* [4] */ TS("shl",MvI), TS("shr",MvI), TS("sal",MvI), TS("sar",MvI),
};
/*
* Decode table for 0xD1 opcodes.
*/
const instable_t dis_opD1[8] = {
/* [0] */ TS("rol",Mv), TS("ror",Mv), TS("rcl",Mv), TS("rcr",Mv),
/* [4] */ TS("shl",Mv), TS("shr",Mv), TS("sal",Mv), TS("sar",Mv),
};
/*
* Decode table for 0xD2 opcodes.
*/
const instable_t dis_opD2[8] = {
/* [0] */ TNS("rolb",Mv), TNS("rorb",Mv), TNS("rclb",Mv), TNS("rcrb",Mv),
/* [4] */ TNS("shlb",Mv), TNS("shrb",Mv), TNS("salb",Mv), TNS("sarb",Mv),
};
/*
* Decode table for 0xD3 opcodes.
*/
const instable_t dis_opD3[8] = {
/* [0] */ TS("rol",Mv), TS("ror",Mv), TS("rcl",Mv), TS("rcr",Mv),
/* [4] */ TS("shl",Mv), TS("shr",Mv), TS("salb",Mv), TS("sar",Mv),
};
/*
* Decode table for 0xF6 opcodes.
*/
const instable_t dis_opF6[8] = {
/* [0] */ TNS("testb",IMw), TNS("testb",IMw), TNS("notb",Mw), TNS("negb",Mw),
/* [4] */ TNS("mulb",MA), TNS("imulb",MA), TNS("divb",MA), TNS("idivb",MA),
};
/*
* Decode table for 0xF7 opcodes.
*/
const instable_t dis_opF7[8] = {
/* [0] */ TS("test",IMw), TS("test",IMw), TS("not",Mw), TS("neg",Mw),
/* [4] */ TS("mul",MA), TS("imul",MA), TS("div",MA), TS("idiv",MA),
};
/*
* Decode table for 0xFE opcodes.
*/
const instable_t dis_opFE[8] = {
/* [0] */ TNS("incb",Mw), TNS("decb",Mw), INVALID, INVALID,
/* [4] */ INVALID, INVALID, INVALID, INVALID,
};
/*
* Decode table for 0xFF opcodes.
*/
const instable_t dis_opFF[8] = {
/* [0] */ TS("inc",Mw), TS("dec",Mw), TNSyp("call",INM), TNS("lcall",INM),
/* [4] */ TNSy("jmp",INM), TNS("ljmp",INM), TSp("push",M), INVALID,
};
/* for 287 instructions, which are a mess to decode */
const instable_t dis_opFP1n2[8][8] = {
{
/* bit pattern: 1101 1xxx MODxx xR/M */
/* [0,0] */ TNS("fadds",M), TNS("fmuls",M), TNS("fcoms",M), TNS("fcomps",M),
/* [0,4] */ TNS("fsubs",M), TNS("fsubrs",M), TNS("fdivs",M), TNS("fdivrs",M),
}, {
/* [1,0] */ TNS("flds",M), INVALID, TNS("fsts",M), TNS("fstps",M),
/* [1,4] */ TNSZ("fldenv",M,28), TNSZ("fldcw",M,2), TNSZ("fnstenv",M,28), TNSZ("fnstcw",M,2),
}, {
/* [2,0] */ TNS("fiaddl",M), TNS("fimull",M), TNS("ficoml",M), TNS("ficompl",M),
/* [2,4] */ TNS("fisubl",M), TNS("fisubrl",M), TNS("fidivl",M), TNS("fidivrl",M),
}, {
/* [3,0] */ TNS("fildl",M), INVALID, TNS("fistl",M), TNS("fistpl",M),
/* [3,4] */ INVALID, TNSZ("fldt",M,10), INVALID, TNSZ("fstpt",M,10),
}, {
/* [4,0] */ TNSZ("faddl",M,8), TNSZ("fmull",M,8), TNSZ("fcoml",M,8), TNSZ("fcompl",M,8),
/* [4,1] */ TNSZ("fsubl",M,8), TNSZ("fsubrl",M,8), TNSZ("fdivl",M,8), TNSZ("fdivrl",M,8),
}, {
/* [5,0] */ TNSZ("fldl",M,8), INVALID, TNSZ("fstl",M,8), TNSZ("fstpl",M,8),
/* [5,4] */ TNSZ("frstor",M,108), INVALID, TNSZ("fnsave",M,108), TNSZ("fnstsw",M,2),
}, {
/* [6,0] */ TNSZ("fiadd",M,2), TNSZ("fimul",M,2), TNSZ("ficom",M,2), TNSZ("ficomp",M,2),
/* [6,4] */ TNSZ("fisub",M,2), TNSZ("fisubr",M,2), TNSZ("fidiv",M,2), TNSZ("fidivr",M,2),
}, {
/* [7,0] */ TNSZ("fild",M,2), INVALID, TNSZ("fist",M,2), TNSZ("fistp",M,2),
/* [7,4] */ TNSZ("fbld",M,10), TNSZ("fildll",M,8), TNSZ("fbstp",M,10), TNSZ("fistpll",M,8),
} };
const instable_t dis_opFP3[8][8] = {
{
/* bit pattern: 1101 1xxx 11xx xREG */
/* [0,0] */ TNS("fadd",FF), TNS("fmul",FF), TNS("fcom",F), TNS("fcomp",F),
/* [0,4] */ TNS("fsub",FF), TNS("fsubr",FF), TNS("fdiv",FF), TNS("fdivr",FF),
}, {
/* [1,0] */ TNS("fld",F), TNS("fxch",F), TNS("fnop",NORM), TNS("fstp",F),
/* [1,4] */ INVALID, INVALID, INVALID, INVALID,
}, {
/* [2,0] */ INVALID, INVALID, INVALID, INVALID,
/* [2,4] */ INVALID, TNS("fucompp",NORM), INVALID, INVALID,
}, {
/* [3,0] */ INVALID, INVALID, INVALID, INVALID,
/* [3,4] */ INVALID, INVALID, INVALID, INVALID,
}, {
/* [4,0] */ TNS("fadd",FF), TNS("fmul",FF), TNS("fcom",F), TNS("fcomp",F),
/* [4,4] */ TNS("fsub",FF), TNS("fsubr",FF), TNS("fdiv",FF), TNS("fdivr",FF),
}, {
/* [5,0] */ TNS("ffree",F), TNS("fxch",F), TNS("fst",F), TNS("fstp",F),
/* [5,4] */ TNS("fucom",F), TNS("fucomp",F), INVALID, INVALID,
}, {
/* [6,0] */ TNS("faddp",FF), TNS("fmulp",FF), TNS("fcomp",F), TNS("fcompp",NORM),
/* [6,4] */ TNS("fsubp",FF), TNS("fsubrp",FF), TNS("fdivp",FF), TNS("fdivrp",FF),
}, {
/* [7,0] */ TNS("ffree",F), TNS("fxch",F), TNS("fstp",F), TNS("fstp",F),
/* [7,4] */ TNS("fnstsw",M), TNS("fucomip",FFC), TNS("fcomip",FFC), INVALID,
} };
const instable_t dis_opFP4[4][8] = {
{
/* bit pattern: 1101 1001 111x xxxx */
/* [0,0] */ TNS("fchs",NORM), TNS("fabs",NORM), INVALID, INVALID,
/* [0,4] */ TNS("ftst",NORM), TNS("fxam",NORM), TNS("ftstp",NORM), INVALID,
}, {
/* [1,0] */ TNS("fld1",NORM), TNS("fldl2t",NORM), TNS("fldl2e",NORM), TNS("fldpi",NORM),
/* [1,4] */ TNS("fldlg2",NORM), TNS("fldln2",NORM), TNS("fldz",NORM), INVALID,
}, {
/* [2,0] */ TNS("f2xm1",NORM), TNS("fyl2x",NORM), TNS("fptan",NORM), TNS("fpatan",NORM),
/* [2,4] */ TNS("fxtract",NORM), TNS("fprem1",NORM), TNS("fdecstp",NORM), TNS("fincstp",NORM),
}, {
/* [3,0] */ TNS("fprem",NORM), TNS("fyl2xp1",NORM), TNS("fsqrt",NORM), TNS("fsincos",NORM),
/* [3,4] */ TNS("frndint",NORM), TNS("fscale",NORM), TNS("fsin",NORM), TNS("fcos",NORM),
} };
const instable_t dis_opFP5[8] = {
/* bit pattern: 1101 1011 111x xxxx */
/* [0] */ TNS("feni",NORM), TNS("fdisi",NORM), TNS("fnclex",NORM), TNS("fninit",NORM),
/* [4] */ TNS("fsetpm",NORM), TNS("frstpm",NORM), INVALID, INVALID,
};
const instable_t dis_opFP6[8] = {
/* bit pattern: 1101 1011 11yy yxxx */
/* [00] */ TNS("fcmov.nb",FF), TNS("fcmov.ne",FF), TNS("fcmov.nbe",FF), TNS("fcmov.nu",FF),
/* [04] */ INVALID, TNS("fucomi",F), TNS("fcomi",F), INVALID,
};
const instable_t dis_opFP7[8] = {
/* bit pattern: 1101 1010 11yy yxxx */
/* [00] */ TNS("fcmov.b",FF), TNS("fcmov.e",FF), TNS("fcmov.be",FF), TNS("fcmov.u",FF),
/* [04] */ INVALID, INVALID, INVALID, INVALID,
};
/*
* Main decode table for the op codes. The first two nibbles
* will be used as an index into the table. If there is a
* a need to further decode an instruction, the array to be
* referenced is indicated with the other two entries being
* empty.
*/
const instable_t dis_distable[16][16] = {
{
/* [0,0] */ TNS("addb",RMw), TS("add",RMw), TNS("addb",MRw), TS("add",MRw),
/* [0,4] */ TNS("addb",IA), TS("add",IA), TSx("push",SEG), TSx("pop",SEG),
/* [0,8] */ TNS("orb",RMw), TS("or",RMw), TNS("orb",MRw), TS("or",MRw),
/* [0,C] */ TNS("orb",IA), TS("or",IA), TSx("push",SEG), IND(&dis_op0F[0][0]),
}, {
/* [1,0] */ TNS("adcb",RMw), TS("adc",RMw), TNS("adcb",MRw), TS("adc",MRw),
/* [1,4] */ TNS("adcb",IA), TS("adc",IA), TSx("push",SEG), TSx("pop",SEG),
/* [1,8] */ TNS("sbbb",RMw), TS("sbb",RMw), TNS("sbbb",MRw), TS("sbb",MRw),
/* [1,C] */ TNS("sbbb",IA), TS("sbb",IA), TSx("push",SEG), TSx("pop",SEG),
}, {
/* [2,0] */ TNS("andb",RMw), TS("and",RMw), TNS("andb",MRw), TS("and",MRw),
/* [2,4] */ TNS("andb",IA), TS("and",IA), TNS("%es:",OVERRIDE), TNSx("daa",NORM),
/* [2,8] */ TNS("subb",RMw), TS("sub",RMw), TNS("subb",MRw), TS("sub",MRw),
/* [2,C] */ TNS("subb",IA), TS("sub",IA), TNS("%cs:",OVERRIDE), TNSx("das",NORM),
}, {
/* [3,0] */ TNS("xorb",RMw), TS("xor",RMw), TNS("xorb",MRw), TS("xor",MRw),
/* [3,4] */ TNS("xorb",IA), TS("xor",IA), TNS("%ss:",OVERRIDE), TNSx("aaa",NORM),
/* [3,8] */ TNS("cmpb",RMw), TS("cmp",RMw), TNS("cmpb",MRw), TS("cmp",MRw),
/* [3,C] */ TNS("cmpb",IA), TS("cmp",IA), TNS("%ds:",OVERRIDE), TNSx("aas",NORM),
}, {
/* [4,0] */ TSx("inc",R), TSx("inc",R), TSx("inc",R), TSx("inc",R),
/* [4,4] */ TSx("inc",R), TSx("inc",R), TSx("inc",R), TSx("inc",R),
/* [4,8] */ TSx("dec",R), TSx("dec",R), TSx("dec",R), TSx("dec",R),
/* [4,C] */ TSx("dec",R), TSx("dec",R), TSx("dec",R), TSx("dec",R),
}, {
/* [5,0] */ TSp("push",R), TSp("push",R), TSp("push",R), TSp("push",R),
/* [5,4] */ TSp("push",R), TSp("push",R), TSp("push",R), TSp("push",R),
/* [5,8] */ TSp("pop",R), TSp("pop",R), TSp("pop",R), TSp("pop",R),
/* [5,C] */ TSp("pop",R), TSp("pop",R), TSp("pop",R), TSp("pop",R),
}, {
/* [6,0] */ TSZx("pusha",IMPLMEM,28),TSZx("popa",IMPLMEM,28), TSx("bound",MR), TNS("arpl",RMw),
/* [6,4] */ TNS("%fs:",OVERRIDE), TNS("%gs:",OVERRIDE), TNS("data16",DM), TNS("addr16",AM),
/* [6,8] */ TSp("push",I), TS("imul",IMUL), TSp("push",Ib), TS("imul",IMUL),
/* [6,C] */ TNSZ("insb",IMPLMEM,1), TSZ("ins",IMPLMEM,4), TNSZ("outsb",IMPLMEM,1),TSZ("outs",IMPLMEM,4),
}, {
/* [7,0] */ TNSy("jo",BD), TNSy("jno",BD), TNSy("jb",BD), TNSy("jae",BD),
/* [7,4] */ TNSy("je",BD), TNSy("jne",BD), TNSy("jbe",BD), TNSy("ja",BD),
/* [7,8] */ TNSy("js",BD), TNSy("jns",BD), TNSy("jp",BD), TNSy("jnp",BD),
/* [7,C] */ TNSy("jl",BD), TNSy("jge",BD), TNSy("jle",BD), TNSy("jg",BD),
}, {
/* [8,0] */ IND(dis_op80), IND(dis_op81), INDx(dis_op82), IND(dis_op83),
/* [8,4] */ TNS("testb",RMw), TS("test",RMw), TNS("xchgb",RMw), TS("xchg",RMw),
/* [8,8] */ TNS("movb",RMw), TS("mov",RMw), TNS("movb",MRw), TS("mov",MRw),
/* [8,C] */ TNS("movw",SM), TS("lea",MR), TNS("movw",MS), TSp("pop",M),
}, {
/* [9,0] */ TNS("nop",NORM), TS("xchg",RA), TS("xchg",RA), TS("xchg",RA),
/* [9,4] */ TS("xchg",RA), TS("xchg",RA), TS("xchg",RA), TS("xchg",RA),
/* [9,8] */ TNS("cXtX",CBW), TNS("cXtX",CWD), TNSx("lcall",SO), TNS("fwait",NORM),
/* [9,C] */ TSZy("pushf",IMPLMEM,4),TSZy("popf",IMPLMEM,4), TNSx("sahf",NORM), TNSx("lahf",NORM),
}, {
/* [A,0] */ TNS("movb",OA), TS("mov",OA), TNS("movb",AO), TS("mov",AO),
/* [A,4] */ TNSZ("movsb",SD,1), TS("movs",SD), TNSZ("cmpsb",SD,1), TS("cmps",SD),
/* [A,8] */ TNS("testb",IA), TS("test",IA), TNS("stosb",AD), TS("stos",AD),
/* [A,C] */ TNS("lodsb",SA), TS("lods",SA), TNS("scasb",AD), TS("scas",AD),
}, {
/* [B,0] */ TNS("movb",IR), TNS("movb",IR), TNS("movb",IR), TNS("movb",IR),
/* [B,4] */ TNS("movb",IR), TNS("movb",IR), TNS("movb",IR), TNS("movb",IR),
/* [B,8] */ TS("mov",IR), TS("mov",IR), TS("mov",IR), TS("mov",IR),
/* [B,C] */ TS("mov",IR), TS("mov",IR), TS("mov",IR), TS("mov",IR),
}, {
/* [C,0] */ IND(dis_opC0), IND(dis_opC1), TNSyp("ret",RET), TNSyp("ret",NORM),
/* [C,4] */ TNSx("les",MR), TNSx("lds",MR), TNS("movb",IMw), TS("mov",IMw),
/* [C,8] */ TNSyp("enter",ENTER), TNSyp("leave",NORM), TNS("lret",RET), TNS("lret",NORM),
/* [C,C] */ TNS("int",INT3), TNS("int",INTx), TNSx("into",NORM), TNS("iret",NORM),
}, {
/* [D,0] */ IND(dis_opD0), IND(dis_opD1), IND(dis_opD2), IND(dis_opD3),
/* [D,4] */ TNSx("aam",U), TNSx("aad",U), TNSx("falc",NORM), TNSZ("xlat",IMPLMEM,1),
/* 287 instructions. Note that although the indirect field */
/* indicates opFP1n2 for further decoding, this is not necessarily */
/* the case since the opFP arrays are not partitioned according to key1 */
/* and key2. opFP1n2 is given only to indicate that we haven't */
/* finished decoding the instruction. */
/* [D,8] */ IND(&dis_opFP1n2[0][0]), IND(&dis_opFP1n2[0][0]), IND(&dis_opFP1n2[0][0]), IND(&dis_opFP1n2[0][0]),
/* [D,C] */ IND(&dis_opFP1n2[0][0]), IND(&dis_opFP1n2[0][0]), IND(&dis_opFP1n2[0][0]), IND(&dis_opFP1n2[0][0]),
}, {
/* [E,0] */ TNSy("loopnz",BD), TNSy("loopz",BD), TNSy("loop",BD), TNSy("jcxz",BD),
/* [E,4] */ TNS("inb",P), TS("in",P), TNS("outb",P), TS("out",P),
/* [E,8] */ TNSyp("call",D), TNSy("jmp",D), TNSx("ljmp",SO), TNSy("jmp",BD),
/* [E,C] */ TNS("inb",V), TS("in",V), TNS("outb",V), TS("out",V),
}, {
/* [F,0] */ TNS("lock",LOCK), TNS("icebp", NORM), TNS("repnz",PREFIX), TNS("repz",PREFIX),
/* [F,4] */ TNS("hlt",NORM), TNS("cmc",NORM), IND(dis_opF6), IND(dis_opF7),
/* [F,8] */ TNS("clc",NORM), TNS("stc",NORM), TNS("cli",NORM), TNS("sti",NORM),
/* [F,C] */ TNS("cld",NORM), TNS("std",NORM), IND(dis_opFE), IND(dis_opFF),
} };
/* END CSTYLED */
/*
* common functions to decode and disassemble an x86 or amd64 instruction
*/
/*
* These are the individual fields of a REX prefix. Note that a REX
* prefix with none of these set is still needed to:
* - use the MOVSXD (sign extend 32 to 64 bits) instruction
* - access the %sil, %dil, %bpl, %spl registers
*/
#define REX_W 0x08 /* 64 bit operand size when set */
#define REX_R 0x04 /* high order bit extension of ModRM reg field */
#define REX_X 0x02 /* high order bit extension of SIB index field */
#define REX_B 0x01 /* extends ModRM r_m, SIB base, or opcode reg */
static uint_t opnd_size; /* SIZE16, SIZE32 or SIZE64 */
static uint_t addr_size; /* SIZE16, SIZE32 or SIZE64 */
/*
* Even in 64 bit mode, usually only 4 byte immediate operands are supported.
*/
static int isize[] = {1, 2, 4, 4};
static int isize64[] = {1, 2, 4, 8};
/*
* Just a bunch of useful macros.
*/
#define WBIT(x) (x & 0x1) /* to get w bit */
#define REGNO(x) (x & 0x7) /* to get 3 bit register */
#define VBIT(x) ((x)>>1 & 0x1) /* to get 'v' bit */
#define OPSIZE(osize, wbit) ((wbit) ? isize[osize] : 1)
#define OPSIZE64(osize, wbit) ((wbit) ? isize64[osize] : 1)
#define REG_ONLY 3 /* mode to indicate a register operand (not memory) */
#define BYTE_OPND 0 /* w-bit value indicating byte register */
#define LONG_OPND 1 /* w-bit value indicating opnd_size register */
#define MM_OPND 2 /* "value" used to indicate a mmx reg */
#define XMM_OPND 3 /* "value" used to indicate a xmm reg */
#define SEG_OPND 4 /* "value" used to indicate a segment reg */
#define CONTROL_OPND 5 /* "value" used to indicate a control reg */
#define DEBUG_OPND 6 /* "value" used to indicate a debug reg */
#define TEST_OPND 7 /* "value" used to indicate a test reg */
#define WORD_OPND 8 /* w-bit value indicating word size reg */
/*
* Get the next byte and separate the op code into the high and low nibbles.
*/
static int
dtrace_get_opcode(dis86_t *x, uint_t *high, uint_t *low)
{
int byte;
/*
* x86 instructions have a maximum length of 15 bytes. Bail out if
* we try to read more.
*/
if (x->d86_len >= 15)
return (x->d86_error = 1);
if (x->d86_error)
return (1);
byte = x->d86_get_byte(x->d86_data);
if (byte < 0)
return (x->d86_error = 1);
x->d86_bytes[x->d86_len++] = byte;
*low = byte & 0xf; /* ----xxxx low 4 bits */
*high = byte >> 4 & 0xf; /* xxxx---- bits 7 to 4 */
return (0);
}
/*
* Get and decode an SIB (scaled index base) byte
*/
static void
dtrace_get_SIB(dis86_t *x, uint_t *ss, uint_t *index, uint_t *base)
{
int byte;
if (x->d86_error)
return;
byte = x->d86_get_byte(x->d86_data);
if (byte < 0) {
x->d86_error = 1;
return;
}
x->d86_bytes[x->d86_len++] = byte;
*base = byte & 0x7;
*index = (byte >> 3) & 0x7;
*ss = (byte >> 6) & 0x3;
}
/*
* Get the byte following the op code and separate it into the
* mode, register, and r/m fields.
*/
static void
dtrace_get_modrm(dis86_t *x, uint_t *mode, uint_t *reg, uint_t *r_m)
{
if (x->d86_got_modrm == 0) {
if (x->d86_rmindex == -1)
x->d86_rmindex = x->d86_len;
dtrace_get_SIB(x, mode, reg, r_m);
x->d86_got_modrm = 1;
}
}
/*
* Adjust register selection based on any REX prefix bits present.
*/
/*ARGSUSED*/
static void
dtrace_rex_adjust(uint_t rex_prefix, uint_t mode, uint_t *reg, uint_t *r_m)
{
if (reg != NULL && r_m == NULL) {
if (rex_prefix & REX_B)
*reg += 8;
} else {
if (reg != NULL && (REX_R & rex_prefix) != 0)
*reg += 8;
if (r_m != NULL && (REX_B & rex_prefix) != 0)
*r_m += 8;
}
}
/*
* Get an immediate operand of the given size, with sign extension.
*/
static void
dtrace_imm_opnd(dis86_t *x, int wbit, int size, int opindex)
{
int i;
int byte;
int valsize = 0;
if (x->d86_numopnds < opindex + 1)
x->d86_numopnds = opindex + 1;
switch (wbit) {
case BYTE_OPND:
valsize = 1;
break;
case LONG_OPND:
if (x->d86_opnd_size == SIZE16)
valsize = 2;
else if (x->d86_opnd_size == SIZE32)
valsize = 4;
else
valsize = 8;
break;
case MM_OPND:
case XMM_OPND:
case SEG_OPND:
case CONTROL_OPND:
case DEBUG_OPND:
case TEST_OPND:
valsize = size;
break;
case WORD_OPND:
valsize = 2;
break;
}
if (valsize < size)
valsize = size;
if (x->d86_error)
return;
x->d86_opnd[opindex].d86_value = 0;
for (i = 0; i < size; ++i) {
byte = x->d86_get_byte(x->d86_data);
if (byte < 0) {
x->d86_error = 1;
return;
}
x->d86_bytes[x->d86_len++] = byte;
x->d86_opnd[opindex].d86_value |= (uint64_t)byte << (i * 8);
}
/* Do sign extension */
if (x->d86_bytes[x->d86_len - 1] & 0x80) {
for (; i < valsize; i++)
x->d86_opnd[opindex].d86_value |=
(uint64_t)0xff << (i* 8);
}
#ifdef DIS_TEXT
x->d86_opnd[opindex].d86_mode = MODE_SIGNED;
x->d86_opnd[opindex].d86_value_size = valsize;
x->d86_imm_bytes += size;
#endif
}
/*
* Get an ip relative operand of the given size, with sign extension.
*/
static void
dtrace_disp_opnd(dis86_t *x, int wbit, int size, int opindex)
{
dtrace_imm_opnd(x, wbit, size, opindex);
#ifdef DIS_TEXT
x->d86_opnd[opindex].d86_mode = MODE_IPREL;
#endif
}
/*
* Check to see if there is a segment override prefix pending.
* If so, print it in the current 'operand' location and set
* the override flag back to false.
*/
/*ARGSUSED*/
static void
dtrace_check_override(dis86_t *x, int opindex)
{
#ifdef DIS_TEXT
if (x->d86_seg_prefix) {
(void) strlcat(x->d86_opnd[opindex].d86_prefix,
x->d86_seg_prefix, PFIXLEN);
}
#endif
x->d86_seg_prefix = NULL;
}
/*
* Process a single instruction Register or Memory operand.
*
* mode = addressing mode from ModRM byte
* r_m = r_m (or reg if mode == 3) field from ModRM byte
* wbit = indicates which register (8bit, 16bit, ... MMX, etc.) set to use.
* o = index of operand that we are processing (0, 1 or 2)
*
* the value of reg or r_m must have already been adjusted for any REX prefix.
*/
/*ARGSUSED*/
static void
dtrace_get_operand(dis86_t *x, uint_t mode, uint_t r_m, int wbit, int opindex)
{
int have_SIB = 0; /* flag presence of scale-index-byte */
uint_t ss; /* scale-factor from opcode */
uint_t index; /* index register number */
uint_t base; /* base register number */
int dispsize; /* size of displacement in bytes */
#ifdef DIS_TEXT
char *opnd = x->d86_opnd[opindex].d86_opnd;
#endif
if (x->d86_numopnds < opindex + 1)
x->d86_numopnds = opindex + 1;
if (x->d86_error)
return;
/*
* first handle a simple register
*/
if (mode == REG_ONLY) {
#ifdef DIS_TEXT
switch (wbit) {
case MM_OPND:
(void) strlcat(opnd, dis_MMREG[r_m], OPLEN);
break;
case XMM_OPND:
(void) strlcat(opnd, dis_XMMREG[r_m], OPLEN);
break;
case SEG_OPND:
(void) strlcat(opnd, dis_SEGREG[r_m], OPLEN);
break;
case CONTROL_OPND:
(void) strlcat(opnd, dis_CONTROLREG[r_m], OPLEN);
break;
case DEBUG_OPND:
(void) strlcat(opnd, dis_DEBUGREG[r_m], OPLEN);
break;
case TEST_OPND:
(void) strlcat(opnd, dis_TESTREG[r_m], OPLEN);
break;
case BYTE_OPND:
if (x->d86_rex_prefix == 0)
(void) strlcat(opnd, dis_REG8[r_m], OPLEN);
else
(void) strlcat(opnd, dis_REG8_REX[r_m], OPLEN);
break;
case WORD_OPND:
(void) strlcat(opnd, dis_REG16[r_m], OPLEN);
break;
case LONG_OPND:
if (x->d86_opnd_size == SIZE16)
(void) strlcat(opnd, dis_REG16[r_m], OPLEN);
else if (x->d86_opnd_size == SIZE32)
(void) strlcat(opnd, dis_REG32[r_m], OPLEN);
else
(void) strlcat(opnd, dis_REG64[r_m], OPLEN);
break;
}
#endif /* DIS_TEXT */
return;
}
/*
* if symbolic representation, skip override prefix, if any
*/
dtrace_check_override(x, opindex);
/*
* Handle 16 bit memory references first, since they decode
* the mode values more simply.
* mode 1 is r_m + 8 bit displacement
* mode 2 is r_m + 16 bit displacement
* mode 0 is just r_m, unless r_m is 6 which is 16 bit disp
*/
if (x->d86_addr_size == SIZE16) {
if ((mode == 0 && r_m == 6) || mode == 2)
dtrace_imm_opnd(x, WORD_OPND, 2, opindex);
else if (mode == 1)
dtrace_imm_opnd(x, BYTE_OPND, 1, opindex);
#ifdef DIS_TEXT
if (mode == 0 && r_m == 6)
x->d86_opnd[opindex].d86_mode = MODE_SIGNED;
else if (mode == 0)
x->d86_opnd[opindex].d86_mode = MODE_NONE;
else
x->d86_opnd[opindex].d86_mode = MODE_OFFSET;
(void) strlcat(opnd, dis_addr16[mode][r_m], OPLEN);
#endif
return;
}
/*
* 32 and 64 bit addressing modes are more complex since they
* can involve an SIB (scaled index and base) byte to decode.
*/
if (r_m == ESP_REGNO || r_m == ESP_REGNO + 8) {
have_SIB = 1;
dtrace_get_SIB(x, &ss, &index, &base);
if (x->d86_error)
return;
if (base != 5 || mode != 0)
if (x->d86_rex_prefix & REX_B)
base += 8;
if (x->d86_rex_prefix & REX_X)
index += 8;
} else {
base = r_m;
}
/*
* Compute the displacement size and get its bytes
*/
dispsize = 0;
if (mode == 1)
dispsize = 1;
else if (mode == 2)
dispsize = 4;
else if ((r_m & 7) == EBP_REGNO ||
(have_SIB && (base & 7) == EBP_REGNO))
dispsize = 4;
if (dispsize > 0) {
dtrace_imm_opnd(x, dispsize == 4 ? LONG_OPND : BYTE_OPND,
dispsize, opindex);
if (x->d86_error)
return;
}
#ifdef DIS_TEXT
if (dispsize > 0)
x->d86_opnd[opindex].d86_mode = MODE_OFFSET;
if (have_SIB == 0) {
if (x->d86_mode == SIZE32) {
if (mode == 0)
(void) strlcat(opnd, dis_addr32_mode0[r_m],
OPLEN);
else
(void) strlcat(opnd, dis_addr32_mode12[r_m],
OPLEN);
} else {
if (mode == 0)
(void) strlcat(opnd, dis_addr64_mode0[r_m],
OPLEN);
else
(void) strlcat(opnd, dis_addr64_mode12[r_m],
OPLEN);
}
} else {
uint_t need_paren = 0;
char **regs;
if (x->d86_mode == SIZE32) /* NOTE this is not addr_size! */
regs = (char **)dis_REG32;
else
regs = (char **)dis_REG64;
/*
* print the base (if any)
*/
if (base == EBP_REGNO && mode == 0) {
if (index != ESP_REGNO) {
(void) strlcat(opnd, "(", OPLEN);
need_paren = 1;
}
} else {
(void) strlcat(opnd, "(", OPLEN);
(void) strlcat(opnd, regs[base], OPLEN);
need_paren = 1;
}
/*
* print the index (if any)
*/
if (index != ESP_REGNO) {
(void) strlcat(opnd, ",", OPLEN);
(void) strlcat(opnd, regs[index], OPLEN);
(void) strlcat(opnd, dis_scale_factor[ss], OPLEN);
} else
if (need_paren)
(void) strlcat(opnd, ")", OPLEN);
}
#endif
}
/*
* Operand sequence for standard instruction involving one register
* and one register/memory operand.
* wbit indicates a byte(0) or opnd_size(1) operation
* vbit indicates direction (0 for "opcode r,r_m") or (1 for "opcode r_m, r")
*/
#define STANDARD_MODRM(x, mode, reg, r_m, rex_prefix, wbit, vbit) { \
dtrace_get_modrm(x, &mode, ®, &r_m); \
dtrace_rex_adjust(rex_prefix, mode, ®, &r_m); \
dtrace_get_operand(x, mode, r_m, wbit, vbit); \
dtrace_get_operand(x, REG_ONLY, reg, wbit, 1 - vbit); \
}
/*
* Similar to above, but allows for the two operands to be of different
* classes (ie. wbit).
* wbit is for the r_m operand
* w2 is for the reg operand
*/
#define MIXED_MM(x, mode, reg, r_m, rex_prefix, wbit, w2, vbit) { \
dtrace_get_modrm(x, &mode, ®, &r_m); \
dtrace_rex_adjust(rex_prefix, mode, ®, &r_m); \
dtrace_get_operand(x, mode, r_m, wbit, vbit); \
dtrace_get_operand(x, REG_ONLY, reg, w2, 1 - vbit); \
}
/*
* Similar, but for 2 operands plus an immediate.
*/
#define THREEOPERAND(x, mode, reg, r_m, rex_prefix, wbit, w2, immsize) { \
dtrace_get_modrm(x, &mode, ®, &r_m); \
dtrace_rex_adjust(rex_prefix, mode, ®, &r_m); \
dtrace_get_operand(x, mode, r_m, wbit, 1); \
dtrace_get_operand(x, REG_ONLY, reg, w2, 2); \
dtrace_imm_opnd(x, wbit, immsize, 0); \
}
/*
* Dissassemble a single x86 or amd64 instruction.
*
* Mode determines the default operating mode (SIZE16, SIZE32 or SIZE64)
* for interpreting instructions.
*
* returns non-zero for bad opcode
*/
int
dtrace_disx86(dis86_t *x, uint_t cpu_mode)
{
const instable_t *dp = NULL; /* decode table being used */
#ifdef DIS_TEXT
uint_t i;
#endif
#ifdef DIS_MEM
uint_t nomem = 0;
#define NOMEM (nomem = 1)
#else
#define NOMEM /* nothing */
#endif
uint_t wbit = 0; /* opcode wbit, 0 is 8 bit, !0 for opnd_size */
uint_t w2; /* wbit value for second operand */
uint_t vbit;
uint_t mode = 0; /* mode value from ModRM byte */
uint_t reg; /* reg value from ModRM byte */
uint_t r_m; /* r_m value from ModRM byte */
uint_t opcode1; /* high nibble of 1st byte */
uint_t opcode2; /* low nibble of 1st byte */
uint_t opcode3; /* extra opcode bits usually from ModRM byte */
uint_t opcode4; /* high nibble of 2nd byte */
uint_t opcode5; /* low nibble of 2ne byte */
uint_t opcode6; /* high nibble of 3rd byte */
uint_t opcode7; /* low nibble of 3rd byte */
uint_t opcode_bytes = 1;
/*
* legacy prefixes come in 5 flavors, you should have only one of each
*/
uint_t opnd_size_prefix = 0;
uint_t addr_size_prefix = 0;
uint_t segment_prefix = 0;
uint_t lock_prefix = 0;
uint_t rep_prefix = 0;
uint_t rex_prefix = 0; /* amd64 register extension prefix */
size_t off;
x->d86_len = 0;
x->d86_rmindex = -1;
x->d86_error = 0;
#ifdef DIS_TEXT
x->d86_numopnds = 0;
x->d86_seg_prefix = NULL;
x->d86_mneu[0] = 0;
for (i = 0; i < 3; ++i) {
x->d86_opnd[i].d86_opnd[0] = 0;
x->d86_opnd[i].d86_prefix[0] = 0;
x->d86_opnd[i].d86_value_size = 0;
x->d86_opnd[i].d86_value = 0;
x->d86_opnd[i].d86_mode = MODE_NONE;
}
#endif
x->d86_error = 0;
x->d86_memsize = 0;
if (cpu_mode == SIZE16) {
opnd_size = SIZE16;
addr_size = SIZE16;
} else if (cpu_mode == SIZE32) {
opnd_size = SIZE32;
addr_size = SIZE32;
} else {
opnd_size = SIZE32;
addr_size = SIZE64;
}
/*
* Get one opcode byte and check for zero padding that follows
* jump tables.
*/
if (dtrace_get_opcode(x, &opcode1, &opcode2) != 0)
goto error;
if (opcode1 == 0 && opcode2 == 0 &&
x->d86_check_func != NULL && x->d86_check_func(x->d86_data)) {
#ifdef DIS_TEXT
(void) strncpy(x->d86_mneu, ".byte\t0", OPLEN);
#endif
goto done;
}
/*
* Gather up legacy x86 prefix bytes.
*/
for (;;) {
uint_t *which_prefix = NULL;
dp = &dis_distable[opcode1][opcode2];
switch (dp->it_adrmode) {
case PREFIX:
which_prefix = &rep_prefix;
break;
case LOCK:
which_prefix = &lock_prefix;
break;
case OVERRIDE:
which_prefix = &segment_prefix;
#ifdef DIS_TEXT
x->d86_seg_prefix = (char *)dp->it_name;
#endif
if (dp->it_invalid64 && cpu_mode == SIZE64)
goto error;
break;
case AM:
which_prefix = &addr_size_prefix;
break;
case DM:
which_prefix = &opnd_size_prefix;
break;
}
if (which_prefix == NULL)
break;
*which_prefix = (opcode1 << 4) | opcode2;
if (dtrace_get_opcode(x, &opcode1, &opcode2) != 0)
goto error;
}
/*
* Handle amd64 mode PREFIX values.
* Some of the segment prefixes are no-ops. (only FS/GS actually work)
* We might have a REX prefix (opcodes 0x40-0x4f)
*/
if (cpu_mode == SIZE64) {
if (segment_prefix != 0x64 && segment_prefix != 0x65)
segment_prefix = 0;
if (opcode1 == 0x4) {
rex_prefix = (opcode1 << 4) | opcode2;
if (dtrace_get_opcode(x, &opcode1, &opcode2) != 0)
goto error;
dp = &dis_distable[opcode1][opcode2];
}
}
/*
* Deal with selection of operand and address size now.
* Note that the REX.W bit being set causes opnd_size_prefix to be
* ignored.
*/
if (cpu_mode == SIZE64) {
if (rex_prefix & 0x08)
opnd_size = SIZE64;
else if (opnd_size_prefix)
opnd_size = SIZE16;
if (addr_size_prefix)
addr_size = SIZE32;
} else if (cpu_mode == SIZE32) {
if (opnd_size_prefix)
opnd_size = SIZE16;
if (addr_size_prefix)
addr_size = SIZE16;
} else {
if (opnd_size_prefix)
opnd_size = SIZE32;
if (addr_size_prefix)
addr_size = SIZE32;
}
/*
* The pause instruction - a repz'd nop. This doesn't fit
* with any of the other prefix goop added for SSE, so we'll
* special-case it here.
*/
if (rep_prefix == 0xf3 && opcode1 == 0x9 && opcode2 == 0x0) {
rep_prefix = 0;
dp = &dis_opPause;
}
/*
* Some 386 instructions have 2 bytes of opcode before the mod_r/m
* byte so we may need to perform a table indirection.
*/
if (dp->it_indirect == dis_op0F[0]) {
if (dtrace_get_opcode(x, &opcode4, &opcode5) != 0)
goto error;
opcode_bytes = 2;
if (opcode4 == 0x7 && opcode5 >= 0x1 && opcode5 <= 0x3) {
uint_t subcode;
if (dtrace_get_opcode(x, &opcode6, &opcode7) != 0)
goto error;
opcode_bytes = 3;
subcode = ((opcode6 & 0x3) << 1) |
((opcode7 & 0x8) >> 3);
dp = &dis_op0F7123[opcode5][subcode];
} else if ((opcode4 == 0xc) && (opcode5 >= 0x8)) {
dp = &dis_op0FC8[0];
} else {
dp = &dis_op0F[opcode4][opcode5];
}
}
/*
* If still not at a TERM decode entry, then a ModRM byte
* exists and its fields further decode the instruction.
*/
x->d86_got_modrm = 0;
if (dp->it_indirect != TERM) {
dtrace_get_modrm(x, &mode, &opcode3, &r_m);
if (x->d86_error)
goto error;
reg = opcode3;
/*
* decode 287 instructions (D8-DF) from opcodeN
*/
if (opcode1 == 0xD && opcode2 >= 0x8) {
if (opcode2 == 0xB && mode == 0x3 && opcode3 == 4)
dp = &dis_opFP5[r_m];
else if (opcode2 == 0xA && mode == 0x3 && opcode3 < 4)
dp = &dis_opFP7[opcode3];
else if (opcode2 == 0xB && mode == 0x3)
dp = &dis_opFP6[opcode3];
else if (opcode2 == 0x9 && mode == 0x3 && opcode3 >= 4)
dp = &dis_opFP4[opcode3 - 4][r_m];
else if (mode == 0x3)
dp = &dis_opFP3[opcode2 - 8][opcode3];
else
dp = &dis_opFP1n2[opcode2 - 8][opcode3];
} else {
dp = dp->it_indirect + opcode3;
}
}
/*
* In amd64 bit mode, ARPL opcode is changed to MOVSXD
* (sign extend 32bit to 64 bit)
*/
if (cpu_mode == SIZE64 && opcode1 == 0x6 && opcode2 == 0x3)
dp = &dis_opMOVSLD;
/*
* at this point we should have a correct (or invalid) opcode
*/
if ((cpu_mode == SIZE64 && dp->it_invalid64) ||
(cpu_mode != SIZE64 && dp->it_invalid32))
goto error;
if (dp->it_indirect != TERM)
goto error;
/*
* deal with MMX/SSE opcodes which are changed by prefixes
*/
switch (dp->it_adrmode) {
case MMO:
case MMOIMPL:
case MMO3P:
case MMOM3:
case MMOMS:
case MMOPM:
case MMOPRM:
case MMOS:
case XMMO:
case XMMOM:
case XMMOMS:
case XMMOPM:
case XMMOS:
case XMMOMX:
case XMMOX3:
case XMMOXMM:
/*
* This is horrible. Some SIMD instructions take the
* form 0x0F 0x?? ..., which is easily decoded using the
* existing tables. Other SIMD instructions use various
* prefix bytes to overload existing instructions. For
* Example, addps is F0, 58, whereas addss is F3 (repz),
* F0, 58. Presumably someone got a raise for this.
*
* If we see one of the instructions which can be
* modified in this way (if we've got one of the SIMDO*
* address modes), we'll check to see if the last prefix
* was a repz. If it was, we strip the prefix from the
* mnemonic, and we indirect using the dis_opSIMDrepz
* table.
*/
/*
* Calculate our offset in dis_op0F
*/
if ((uintptr_t)dp - (uintptr_t)dis_op0F > sizeof (dis_op0F))
goto error;
off = ((uintptr_t)dp - (uintptr_t)dis_op0F) /
sizeof (instable_t);
/*
* Rewrite if this instruction used one of the magic prefixes.
*/
if (rep_prefix) {
if (rep_prefix == 0xf2)
dp = &dis_opSIMDrepnz[off];
else
dp = &dis_opSIMDrepz[off];
rep_prefix = 0;
} else if (opnd_size_prefix) {
dp = &dis_opSIMDdata16[off];
opnd_size_prefix = 0;
if (opnd_size == SIZE16)
opnd_size = SIZE32;
}
break;
case MMOSH:
/*
* As with the "normal" SIMD instructions, the MMX
* shuffle instructions are overloaded. These
* instructions, however, are special in that they use
* an extra byte, and thus an extra table. As of this
* writing, they only use the opnd_size prefix.
*/
/*
* Calculate our offset in dis_op0F7123
*/
if ((uintptr_t)dp - (uintptr_t)dis_op0F7123 >
sizeof (dis_op0F7123))
goto error;
if (opnd_size_prefix) {
off = ((uintptr_t)dp - (uintptr_t)dis_op0F7123) /
sizeof (instable_t);
dp = &dis_opSIMD7123[off];
opnd_size_prefix = 0;
if (opnd_size == SIZE16)
opnd_size = SIZE32;
}
break;
}
/*
* In 64 bit mode, some opcodes automatically use opnd_size == SIZE64.
*/
if (cpu_mode == SIZE64)
if (dp->it_always64 || (opnd_size == SIZE32 && dp->it_stackop))
opnd_size = SIZE64;
#ifdef DIS_TEXT
/*
* At this point most instructions can format the opcode mnemonic
* including the prefixes.
*/
if (lock_prefix)
(void) strlcat(x->d86_mneu, "lock ", OPLEN);
if (rep_prefix == 0xf2)
(void) strlcat(x->d86_mneu, "repnz ", OPLEN);
else if (rep_prefix == 0xf3)
(void) strlcat(x->d86_mneu, "repz ", OPLEN);
if (cpu_mode == SIZE64 && addr_size_prefix)
(void) strlcat(x->d86_mneu, "addr32 ", OPLEN);
if (dp->it_adrmode != CBW &&
dp->it_adrmode != CWD &&
dp->it_adrmode != XMMSFNC) {
if (strcmp(dp->it_name, "INVALID") == 0)
goto error;
(void) strlcat(x->d86_mneu, dp->it_name, OPLEN);
if (dp->it_suffix) {
char *types[] = {"", "w", "l", "q"};
if (opcode_bytes == 2 && opcode4 == 4) {
/* It's a cmovx.yy. Replace the suffix x */
for (i = 5; i < OPLEN; i++) {
if (x->d86_mneu[i] == '.')
break;
}
x->d86_mneu[i - 1] = *types[opnd_size];
} else {
(void) strlcat(x->d86_mneu, types[opnd_size],
OPLEN);
}
}
}
#endif
/*
* Process operands based on the addressing modes.
*/
x->d86_mode = cpu_mode;
x->d86_rex_prefix = rex_prefix;
x->d86_opnd_size = opnd_size;
x->d86_addr_size = addr_size;
vbit = 0; /* initialize for mem/reg -> reg */
switch (dp->it_adrmode) {
/*
* amd64 instruction to sign extend 32 bit reg/mem operands
* into 64 bit register values
*/
case MOVSXZ:
#ifdef DIS_TEXT
if (rex_prefix == 0)
(void) strncpy(x->d86_mneu, "movzld", OPLEN);
#endif
dtrace_get_modrm(x, &mode, ®, &r_m);
dtrace_rex_adjust(rex_prefix, mode, ®, &r_m);
x->d86_opnd_size = SIZE64;
dtrace_get_operand(x, REG_ONLY, reg, LONG_OPND, 1);
x->d86_opnd_size = opnd_size = SIZE32;
wbit = LONG_OPND;
dtrace_get_operand(x, mode, r_m, wbit, 0);
break;
/*
* movsbl movsbw movsbq (0x0FBE) or movswl movswq (0x0FBF)
* movzbl movzbw movzbq (0x0FB6) or mobzwl movzwq (0x0FB7)
* wbit lives in 2nd byte, note that operands
* are different sized
*/
case MOVZ:
if (rex_prefix & REX_W) {
/* target register size = 64 bit */
x->d86_mneu[5] = 'q';
}
dtrace_get_modrm(x, &mode, ®, &r_m);
dtrace_rex_adjust(rex_prefix, mode, ®, &r_m);
dtrace_get_operand(x, REG_ONLY, reg, LONG_OPND, 1);
x->d86_opnd_size = opnd_size = SIZE16;
wbit = WBIT(opcode5);
dtrace_get_operand(x, mode, r_m, wbit, 0);
break;
/*
* imul instruction, with either 8-bit or longer immediate
* opcode 0x6B for byte, sign-extended displacement, 0x69 for word(s)
*/
case IMUL:
wbit = LONG_OPND;
THREEOPERAND(x, mode, reg, r_m, rex_prefix, wbit, LONG_OPND,
OPSIZE(opnd_size, opcode2 == 0x9));
break;
/* memory or register operand to register, with 'w' bit */
case MRw:
wbit = WBIT(opcode2);
STANDARD_MODRM(x, mode, reg, r_m, rex_prefix, wbit, 0);
break;
/* register to memory or register operand, with 'w' bit */
/* arpl happens to fit here also because it is odd */
case RMw:
if (opcode_bytes == 2)
wbit = WBIT(opcode5);
else
wbit = WBIT(opcode2);
STANDARD_MODRM(x, mode, reg, r_m, rex_prefix, wbit, 1);
break;
/* xaddb instruction */
case XADDB:
wbit = 0;
STANDARD_MODRM(x, mode, reg, r_m, rex_prefix, wbit, 1);
break;
/* MMX register to memory or register operand */
case MMS:
case MMOS:
#ifdef DIS_TEXT
wbit = strcmp(dp->it_name, "movd") ? MM_OPND : LONG_OPND;
#else
wbit = LONG_OPND;
#endif
MIXED_MM(x, mode, reg, r_m, rex_prefix, wbit, MM_OPND, 1);
break;
/* MMX register to memory */
case MMOMS:
dtrace_get_modrm(x, &mode, ®, &r_m);
if (mode == REG_ONLY)
goto error;
wbit = MM_OPND;
MIXED_MM(x, mode, reg, r_m, rex_prefix, wbit, MM_OPND, 1);
break;
/* Double shift. Has immediate operand specifying the shift. */
case DSHIFT:
wbit = LONG_OPND;
dtrace_get_modrm(x, &mode, ®, &r_m);
dtrace_rex_adjust(rex_prefix, mode, ®, &r_m);
dtrace_get_operand(x, mode, r_m, wbit, 2);
dtrace_get_operand(x, REG_ONLY, reg, LONG_OPND, 1);
dtrace_imm_opnd(x, wbit, 1, 0);
break;
/*
* Double shift. With no immediate operand, specifies using %cl.
*/
case DSHIFTcl:
wbit = LONG_OPND;
STANDARD_MODRM(x, mode, reg, r_m, rex_prefix, wbit, 1);
break;
/* immediate to memory or register operand */
case IMlw:
wbit = WBIT(opcode2);
dtrace_rex_adjust(rex_prefix, mode, NULL, &r_m);
dtrace_get_operand(x, mode, r_m, wbit, 1);
/*
* Have long immediate for opcode 0x81, but not 0x80 nor 0x83
*/
dtrace_imm_opnd(x, wbit, OPSIZE(opnd_size, opcode2 == 1), 0);
break;
/* immediate to memory or register operand with the */
/* 'w' bit present */
case IMw:
wbit = WBIT(opcode2);
dtrace_get_modrm(x, &mode, ®, &r_m);
dtrace_rex_adjust(rex_prefix, mode, NULL, &r_m);
dtrace_get_operand(x, mode, r_m, wbit, 1);
dtrace_imm_opnd(x, wbit, OPSIZE(opnd_size, wbit), 0);
break;
/* immediate to register with register in low 3 bits */
/* of op code */
case IR:
/* w-bit here (with regs) is bit 3 */
wbit = opcode2 >>3 & 0x1;
reg = REGNO(opcode2);
dtrace_rex_adjust(rex_prefix, mode, ®, NULL);
mode = REG_ONLY;
r_m = reg;
dtrace_get_operand(x, mode, r_m, wbit, 1);
dtrace_imm_opnd(x, wbit, OPSIZE64(opnd_size, wbit), 0);
break;
/* MMX immediate shift of register */
case MMSH:
case MMOSH:
wbit = MM_OPND;
goto mm_shift; /* in next case */
/* SIMD immediate shift of register */
case XMMSH:
wbit = XMM_OPND;
mm_shift:
reg = REGNO(opcode7);
dtrace_rex_adjust(rex_prefix, mode, ®, NULL);
dtrace_get_operand(x, REG_ONLY, reg, wbit, 1);
dtrace_imm_opnd(x, wbit, 1, 0);
NOMEM;
break;
/* accumulator to memory operand */
case AO:
vbit = 1;
/*FALLTHROUGH*/
/* memory operand to accumulator */
case OA:
wbit = WBIT(opcode2);
dtrace_get_operand(x, REG_ONLY, EAX_REGNO, wbit, 1 - vbit);
dtrace_imm_opnd(x, wbit, OPSIZE64(addr_size, LONG_OPND), vbit);
#ifdef DIS_TEXT
x->d86_opnd[vbit].d86_mode = MODE_OFFSET;
#endif
break;
/* segment register to memory or register operand */
case SM:
vbit = 1;
/*FALLTHROUGH*/
/* memory or register operand to segment register */
case MS:
dtrace_get_modrm(x, &mode, ®, &r_m);
dtrace_rex_adjust(rex_prefix, mode, NULL, &r_m);
dtrace_get_operand(x, mode, r_m, LONG_OPND, vbit);
dtrace_get_operand(x, REG_ONLY, reg, SEG_OPND, 1 - vbit);
break;
/*
* rotate or shift instructions, which may shift by 1 or
* consult the cl register, depending on the 'v' bit
*/
case Mv:
vbit = VBIT(opcode2);
wbit = WBIT(opcode2);
dtrace_rex_adjust(rex_prefix, mode, NULL, &r_m);
dtrace_get_operand(x, mode, r_m, wbit, 1);
#ifdef DIS_TEXT
if (vbit) {
(void) strlcat(x->d86_opnd[0].d86_opnd, "%cl", OPLEN);
} else {
x->d86_opnd[0].d86_mode = MODE_SIGNED;
x->d86_opnd[0].d86_value_size = 1;
x->d86_opnd[0].d86_value = 1;
}
#endif
break;
/*
* immediate rotate or shift instructions
*/
case MvI:
wbit = WBIT(opcode2);
normal_imm_mem:
dtrace_rex_adjust(rex_prefix, mode, NULL, &r_m);
dtrace_get_operand(x, mode, r_m, wbit, 1);
dtrace_imm_opnd(x, wbit, 1, 0);
break;
/* bit test instructions */
case MIb:
wbit = LONG_OPND;
goto normal_imm_mem;
/* single memory or register operand with 'w' bit present */
case Mw:
wbit = WBIT(opcode2);
just_mem:
dtrace_get_modrm(x, &mode, ®, &r_m);
dtrace_rex_adjust(rex_prefix, mode, NULL, &r_m);
dtrace_get_operand(x, mode, r_m, wbit, 0);
break;
case SWAPGS:
if (cpu_mode == SIZE64 && mode == 3 && r_m == 0) {
#ifdef DIS_TEXT
(void) strncpy(x->d86_mneu, "swapgs", OPLEN);
#endif
NOMEM;
break;
}
/*FALLTHROUGH*/
/* prefetch instruction - memory operand, but no memory acess */
case PREF:
NOMEM;
/*FALLTHROUGH*/
/* single memory or register operand */
case M:
wbit = LONG_OPND;
goto just_mem;
/* single memory or register byte operand */
case Mb:
wbit = BYTE_OPND;
goto just_mem;
case MO:
/* Similar to M, but only memory (no direct registers) */
wbit = LONG_OPND;
dtrace_get_modrm(x, &mode, ®, &r_m);
if (mode == 3)
goto error;
dtrace_rex_adjust(rex_prefix, mode, NULL, &r_m);
dtrace_get_operand(x, mode, r_m, wbit, 0);
break;
/* move special register to register or reverse if vbit */
case SREG:
switch (opcode5) {
case 2:
vbit = 1;
/*FALLTHROUGH*/
case 0:
wbit = CONTROL_OPND;
break;
case 3:
vbit = 1;
/*FALLTHROUGH*/
case 1:
wbit = DEBUG_OPND;
break;
case 6:
vbit = 1;
/*FALLTHROUGH*/
case 4:
wbit = TEST_OPND;
break;
}
dtrace_get_modrm(x, &mode, ®, &r_m);
dtrace_rex_adjust(rex_prefix, mode, ®, &r_m);
dtrace_get_operand(x, REG_ONLY, reg, wbit, vbit);
dtrace_get_operand(x, REG_ONLY, r_m, LONG_OPND, 1 - vbit);
NOMEM;
break;
/*
* single register operand with register in the low 3
* bits of op code
*/
case R:
if (opcode_bytes == 2)
reg = REGNO(opcode5);
else
reg = REGNO(opcode2);
dtrace_rex_adjust(rex_prefix, mode, ®, NULL);
dtrace_get_operand(x, REG_ONLY, reg, LONG_OPND, 0);
NOMEM;
break;
/*
* register to accumulator with register in the low 3
* bits of op code, xchg instructions
*/
case RA:
NOMEM;
reg = REGNO(opcode2);
dtrace_rex_adjust(rex_prefix, mode, ®, NULL);
dtrace_get_operand(x, REG_ONLY, reg, LONG_OPND, 0);
dtrace_get_operand(x, REG_ONLY, EAX_REGNO, LONG_OPND, 1);
break;
/*
* single segment register operand, with register in
* bits 3-4 of op code byte
*/
case SEG:
NOMEM;
reg = (x->d86_bytes[x->d86_len - 1] >> 3) & 0x3;
dtrace_get_operand(x, REG_ONLY, reg, SEG_OPND, 0);
break;
/*
* single segment register operand, with register in
* bits 3-5 of op code
*/
case LSEG:
NOMEM;
/* long seg reg from opcode */
reg = (x->d86_bytes[x->d86_len - 1] >> 3) & 0x7;
dtrace_get_operand(x, REG_ONLY, reg, SEG_OPND, 0);
break;
/* memory or register operand to register */
case MR:
wbit = LONG_OPND;
STANDARD_MODRM(x, mode, reg, r_m, rex_prefix, wbit, 0);
break;
case RM:
wbit = LONG_OPND;
STANDARD_MODRM(x, mode, reg, r_m, rex_prefix, wbit, 1);
break;
/* MMX/SIMD-Int memory or mm reg to mm reg */
case MM:
case MMO:
#ifdef DIS_TEXT
wbit = strcmp(dp->it_name, "movd") ? MM_OPND : LONG_OPND;
#else
wbit = LONG_OPND;
#endif
MIXED_MM(x, mode, reg, r_m, rex_prefix, wbit, MM_OPND, 0);
break;
case MMOIMPL:
#ifdef DIS_TEXT
wbit = strcmp(dp->it_name, "movd") ? MM_OPND : LONG_OPND;
#else
wbit = LONG_OPND;
#endif
dtrace_get_modrm(x, &mode, ®, &r_m);
if (mode != REG_ONLY)
goto error;
dtrace_rex_adjust(rex_prefix, mode, ®, &r_m);
dtrace_get_operand(x, mode, r_m, wbit, 0);
dtrace_get_operand(x, REG_ONLY, reg, MM_OPND, 1);
mode = 0; /* change for memory access size... */
break;
/* MMX/SIMD-Int and SIMD-FP predicated mm reg to r32 */
case MMO3P:
wbit = MM_OPND;
goto xmm3p;
case XMM3P:
wbit = XMM_OPND;
xmm3p:
dtrace_get_modrm(x, &mode, ®, &r_m);
if (mode != REG_ONLY)
goto error;
THREEOPERAND(x, mode, reg, r_m, rex_prefix, wbit, LONG_OPND, 1);
NOMEM;
break;
/* MMX/SIMD-Int predicated r32/mem to mm reg */
case MMOPRM:
wbit = LONG_OPND;
w2 = MM_OPND;
goto xmmprm;
case XMMPRM:
wbit = LONG_OPND;
w2 = XMM_OPND;
xmmprm:
THREEOPERAND(x, mode, reg, r_m, rex_prefix, wbit, w2, 1);
break;
/* MMX/SIMD-Int predicated mm/mem to mm reg */
case MMOPM:
wbit = w2 = MM_OPND;
goto xmmprm;
/* MMX/SIMD-Int mm reg to r32 */
case MMOM3:
NOMEM;
dtrace_get_modrm(x, &mode, ®, &r_m);
if (mode != REG_ONLY)
goto error;
wbit = MM_OPND;
MIXED_MM(x, mode, reg, r_m, rex_prefix, wbit, LONG_OPND, 0);
break;
/* SIMD memory or xmm reg operand to xmm reg */
case XMM:
case XMMO:
case XMMXIMPL:
wbit = XMM_OPND;
STANDARD_MODRM(x, mode, reg, r_m, rex_prefix, wbit, 0);
if (dp->it_adrmode == XMMXIMPL && mode != REG_ONLY)
goto error;
#ifdef DIS_TEXT
/*
* movlps and movhlps share opcodes. They differ in the
* addressing modes allowed for their operands.
* movhps and movlhps behave similarly.
*/
if (mode == REG_ONLY) {
if (strcmp(dp->it_name, "movlps") == 0)
(void) strncpy(x->d86_mneu, "movhlps", OPLEN);
else if (strcmp(dp->it_name, "movhps") == 0)
(void) strncpy(x->d86_mneu, "movlhps", OPLEN);
}
#endif
if (dp->it_adrmode == XMMXIMPL)
mode = 0; /* change for memory access size... */
break;
/* SIMD xmm reg to memory or xmm reg */
case XMMS:
case XMMOS:
case XMMMS:
case XMMOMS:
dtrace_get_modrm(x, &mode, ®, &r_m);
#ifdef DIS_TEXT
if ((strcmp(dp->it_name, "movlps") == 0 ||
strcmp(dp->it_name, "movhps") == 0 ||
strcmp(dp->it_name, "movntps") == 0) &&
mode == REG_ONLY)
goto error;
#endif
wbit = XMM_OPND;
MIXED_MM(x, mode, reg, r_m, rex_prefix, wbit, XMM_OPND, 1);
break;
/* SIMD memory to xmm reg */
case XMMM:
case XMMOM:
wbit = XMM_OPND;
dtrace_get_modrm(x, &mode, ®, &r_m);
#ifdef DIS_TEXT
if (mode == REG_ONLY) {
if (strcmp(dp->it_name, "movhps") == 0)
(void) strncpy(x->d86_mneu, "movlhps", OPLEN);
else
goto error;
}
#endif
MIXED_MM(x, mode, reg, r_m, rex_prefix, wbit, XMM_OPND, 0);
break;
/* SIMD memory or r32 to xmm reg */
case XMM3MX:
wbit = LONG_OPND;
MIXED_MM(x, mode, reg, r_m, rex_prefix, wbit, XMM_OPND, 0);
break;
case XMM3MXS:
wbit = LONG_OPND;
MIXED_MM(x, mode, reg, r_m, rex_prefix, wbit, XMM_OPND, 1);
break;
/* SIMD memory or mm reg to xmm reg */
case XMMOMX:
/* SIMD mm to xmm */
case XMMMX:
wbit = MM_OPND;
MIXED_MM(x, mode, reg, r_m, rex_prefix, wbit, XMM_OPND, 0);
break;
/* SIMD memory or xmm reg to mm reg */
case XMMXMM:
case XMMOXMM:
case XMMXM:
wbit = XMM_OPND;
MIXED_MM(x, mode, reg, r_m, rex_prefix, wbit, MM_OPND, 0);
break;
/* SIMD memory or xmm reg to r32 */
case XMMXM3:
wbit = XMM_OPND;
MIXED_MM(x, mode, reg, r_m, rex_prefix, wbit, LONG_OPND, 0);
break;
/* SIMD xmm to r32 */
case XMMX3:
case XMMOX3:
dtrace_get_modrm(x, &mode, ®, &r_m);
if (mode != REG_ONLY)
goto error;
dtrace_rex_adjust(rex_prefix, mode, ®, &r_m);
dtrace_get_operand(x, mode, r_m, XMM_OPND, 0);
dtrace_get_operand(x, REG_ONLY, reg, LONG_OPND, 1);
NOMEM;
break;
/* SIMD predicated memory or xmm reg with/to xmm reg */
case XMMP:
case XMMOPM:
wbit = XMM_OPND;
THREEOPERAND(x, mode, reg, r_m, rex_prefix, wbit, XMM_OPND, 1);
#ifdef DIS_TEXT
/*
* cmpps and cmpss vary their instruction name based
* on the value of imm8. Other XMMP instructions,
* such as shufps, require explicit specification of
* the predicate.
*/
if (dp->it_name[0] == 'c' &&
dp->it_name[1] == 'm' &&
dp->it_name[2] == 'p' &&
strlen(dp->it_name) == 5) {
uchar_t pred = x->d86_opnd[0].d86_value & 0xff;
if (pred >= (sizeof (dis_PREDSUFFIX) / sizeof (char *)))
goto error;
(void) strncpy(x->d86_mneu, "cmp", OPLEN);
(void) strlcat(x->d86_mneu, dis_PREDSUFFIX[pred],
OPLEN);
(void) strlcat(x->d86_mneu,
dp->it_name + strlen(dp->it_name) - 2,
OPLEN);
x->d86_opnd[0] = x->d86_opnd[1];
x->d86_opnd[1] = x->d86_opnd[2];
x->d86_numopnds = 2;
}
#endif
break;
/* immediate operand to accumulator */
case IA:
wbit = WBIT(opcode2);
dtrace_get_operand(x, REG_ONLY, EAX_REGNO, wbit, 1);
dtrace_imm_opnd(x, wbit, OPSIZE(opnd_size, wbit), 0);
NOMEM;
break;
/* memory or register operand to accumulator */
case MA:
wbit = WBIT(opcode2);
dtrace_rex_adjust(rex_prefix, mode, NULL, &r_m);
dtrace_get_operand(x, mode, r_m, wbit, 0);
break;
/* si register to di register used to reference memory */
case SD:
#ifdef DIS_TEXT
dtrace_check_override(x, 0);
x->d86_numopnds = 2;
if (addr_size == SIZE64) {
(void) strlcat(x->d86_opnd[0].d86_opnd, "(%rsi)",
OPLEN);
(void) strlcat(x->d86_opnd[1].d86_opnd, "(%rdi)",
OPLEN);
} else if (addr_size == SIZE32) {
(void) strlcat(x->d86_opnd[0].d86_opnd, "(%esi)",
OPLEN);
(void) strlcat(x->d86_opnd[1].d86_opnd, "(%edi)",
OPLEN);
} else {
(void) strlcat(x->d86_opnd[0].d86_opnd, "(%si)",
OPLEN);
(void) strlcat(x->d86_opnd[1].d86_opnd, "(%di)",
OPLEN);
}
#endif
wbit = LONG_OPND;
break;
/* accumulator to di register */
case AD:
wbit = WBIT(opcode2);
#ifdef DIS_TEXT
dtrace_check_override(x, 1);
x->d86_numopnds = 2;
dtrace_get_operand(x, REG_ONLY, EAX_REGNO, wbit, 0);
if (addr_size == SIZE64)
(void) strlcat(x->d86_opnd[1].d86_opnd, "(%rdi)",
OPLEN);
else if (addr_size == SIZE32)
(void) strlcat(x->d86_opnd[1].d86_opnd, "(%edi)",
OPLEN);
else
(void) strlcat(x->d86_opnd[1].d86_opnd, "(%di)",
OPLEN);
#endif
break;
/* si register to accumulator */
case SA:
wbit = WBIT(opcode2);
#ifdef DIS_TEXT
dtrace_check_override(x, 0);
x->d86_numopnds = 2;
if (addr_size == SIZE64)
(void) strlcat(x->d86_opnd[0].d86_opnd, "(%rsi)",
OPLEN);
else if (addr_size == SIZE32)
(void) strlcat(x->d86_opnd[0].d86_opnd, "(%esi)",
OPLEN);
else
(void) strlcat(x->d86_opnd[0].d86_opnd, "(%si)",
OPLEN);
dtrace_get_operand(x, REG_ONLY, EAX_REGNO, wbit, 1);
#endif
break;
/*
* single operand, a 16/32 bit displacement
*/
case D:
wbit = LONG_OPND;
dtrace_disp_opnd(x, wbit, OPSIZE(opnd_size, LONG_OPND), 0);
NOMEM;
break;
/* jmp/call indirect to memory or register operand */
case INM:
#ifdef DIS_TEXT
(void) strlcat(x->d86_opnd[0].d86_prefix, "*", OPLEN);
#endif
dtrace_rex_adjust(rex_prefix, mode, NULL, &r_m);
dtrace_get_operand(x, mode, r_m, LONG_OPND, 0);
wbit = LONG_OPND;
break;
/*
* for long jumps and long calls -- a new code segment
* register and an offset in IP -- stored in object
* code in reverse order. Note - not valid in amd64
*/
case SO:
dtrace_check_override(x, 1);
wbit = LONG_OPND;
dtrace_imm_opnd(x, wbit, OPSIZE(opnd_size, LONG_OPND), 1);
#ifdef DIS_TEXT
x->d86_opnd[1].d86_mode = MODE_SIGNED;
#endif
/* will now get segment operand */
dtrace_imm_opnd(x, wbit, 2, 0);
break;
/*
* jmp/call. single operand, 8 bit displacement.
* added to current EIP in 'compofff'
*/
case BD:
dtrace_disp_opnd(x, BYTE_OPND, 1, 0);
NOMEM;
break;
/* single 32/16 bit immediate operand */
case I:
wbit = LONG_OPND;
dtrace_imm_opnd(x, wbit, OPSIZE(opnd_size, LONG_OPND), 0);
break;
/* single 8 bit immediate operand */
case Ib:
wbit = LONG_OPND;
dtrace_imm_opnd(x, wbit, 1, 0);
break;
case ENTER:
wbit = LONG_OPND;
dtrace_imm_opnd(x, wbit, 2, 0);
dtrace_imm_opnd(x, wbit, 1, 1);
switch (opnd_size) {
case SIZE64:
x->d86_memsize = (x->d86_opnd[1].d86_value + 1) * 8;
break;
case SIZE32:
x->d86_memsize = (x->d86_opnd[1].d86_value + 1) * 4;
break;
case SIZE16:
x->d86_memsize = (x->d86_opnd[1].d86_value + 1) * 2;
break;
}
break;
/* 16-bit immediate operand */
case RET:
wbit = LONG_OPND;
dtrace_imm_opnd(x, wbit, 2, 0);
break;
/* single 8 bit port operand */
case P:
dtrace_check_override(x, 0);
dtrace_imm_opnd(x, BYTE_OPND, 1, 0);
NOMEM;
break;
/* single operand, dx register (variable port instruction) */
case V:
x->d86_numopnds = 1;
dtrace_check_override(x, 0);
#ifdef DIS_TEXT
(void) strlcat(x->d86_opnd[0].d86_opnd, "(%dx)", OPLEN);
#endif
NOMEM;
break;
/*
* The int instruction, which has two forms:
* int 3 (breakpoint) or
* int n, where n is indicated in the subsequent
* byte (format Ib). The int 3 instruction (opcode 0xCC),
* where, although the 3 looks like an operand,
* it is implied by the opcode. It must be converted
* to the correct base and output.
*/
case INT3:
#ifdef DIS_TEXT
x->d86_numopnds = 1;
x->d86_opnd[0].d86_mode = MODE_SIGNED;
x->d86_opnd[0].d86_value_size = 1;
x->d86_opnd[0].d86_value = 3;
#endif
NOMEM;
break;
/* single 8 bit immediate operand */
case INTx:
dtrace_imm_opnd(x, BYTE_OPND, 1, 0);
NOMEM;
break;
/* an unused byte must be discarded */
case U:
if (x->d86_get_byte(x->d86_data) < 0)
goto error;
x->d86_len++;
NOMEM;
break;
case CBW:
#ifdef DIS_TEXT
if (opnd_size == SIZE16)
(void) strlcat(x->d86_mneu, "cbtw", OPLEN);
else if (opnd_size == SIZE32)
(void) strlcat(x->d86_mneu, "cwtl", OPLEN);
else
(void) strlcat(x->d86_mneu, "cltq", OPLEN);
#endif
wbit = LONG_OPND;
NOMEM;
break;
case CWD:
#ifdef DIS_TEXT
if (opnd_size == SIZE16)
(void) strlcat(x->d86_mneu, "cwtd", OPLEN);
else if (opnd_size == SIZE32)
(void) strlcat(x->d86_mneu, "cltd", OPLEN);
else
(void) strlcat(x->d86_mneu, "cqtd", OPLEN);
#endif
wbit = LONG_OPND;
NOMEM;
break;
case XMMSFNC:
/*
* sfence is sfence if mode is REG_ONLY. If mode isn't
* REG_ONLY, mnemonic should be 'clflush'.
*/
dtrace_get_modrm(x, &mode, ®, &r_m);
/* sfence doesn't take operands */
#ifdef DIS_TEXT
if (mode == REG_ONLY) {
(void) strlcat(x->d86_mneu, "sfence", OPLEN);
} else {
(void) strlcat(x->d86_mneu, "clflush", OPLEN);
dtrace_rex_adjust(rex_prefix, mode, ®, &r_m);
dtrace_get_operand(x, mode, r_m, BYTE_OPND, 0);
NOMEM;
}
#else
if (mode != REG_ONLY) {
dtrace_rex_adjust(rex_prefix, mode, ®, &r_m);
dtrace_get_operand(x, mode, r_m, BYTE_OPND, 0);
NOMEM;
}
#endif
break;
/*
* no disassembly, the mnemonic was all there was so go on
*/
case NORM:
if (dp->it_invalid32 && cpu_mode != SIZE64)
goto error;
NOMEM;
/*FALLTHROUGH*/
case IMPLMEM:
break;
case XMMFENCE:
/*
* Only the following exact byte sequences are allowed:
*
* 0f ae e8 lfence
* 0f ae f0 mfence
*/
if ((uint8_t)x->d86_bytes[x->d86_len - 1] != 0xe8 &&
(uint8_t)x->d86_bytes[x->d86_len - 1] != 0xf0)
goto error;
break;
/* float reg */
case F:
#ifdef DIS_TEXT
x->d86_numopnds = 1;
(void) strlcat(x->d86_opnd[0].d86_opnd, "%st(X)", OPLEN);
x->d86_opnd[0].d86_opnd[4] = r_m + '0';
#endif
NOMEM;
break;
/* float reg to float reg, with ret bit present */
case FF:
vbit = opcode2 >> 2 & 0x1; /* vbit = 1: st -> st(i) */
/*FALLTHROUGH*/
case FFC: /* case for vbit always = 0 */
#ifdef DIS_TEXT
x->d86_numopnds = 2;
(void) strlcat(x->d86_opnd[1 - vbit].d86_opnd, "%st", OPLEN);
(void) strlcat(x->d86_opnd[vbit].d86_opnd, "%st(X)", OPLEN);
x->d86_opnd[vbit].d86_opnd[4] = r_m + '0';
#endif
NOMEM;
break;
/* an invalid op code */
case AM:
case DM:
case OVERRIDE:
case PREFIX:
case UNKNOWN:
NOMEM;
default:
goto error;
} /* end switch */
if (x->d86_error)
goto error;
done:
#ifdef DIS_MEM
/*
* compute the size of any memory accessed by the instruction
*/
if (x->d86_memsize != 0) {
return (0);
} else if (dp->it_stackop) {
switch (opnd_size) {
case SIZE16:
x->d86_memsize = 2;
break;
case SIZE32:
x->d86_memsize = 4;
break;
case SIZE64:
x->d86_memsize = 8;
break;
}
} else if (nomem || mode == REG_ONLY) {
x->d86_memsize = 0;
} else if (dp->it_size != 0) {
/*
* In 64 bit mode descriptor table entries
* go up to 10 bytes and popf/pushf are always 8 bytes
*/
if (x->d86_mode == SIZE64 && dp->it_size == 6)
x->d86_memsize = 10;
else if (x->d86_mode == SIZE64 && opcode1 == 0x9 &&
(opcode2 == 0xc || opcode2 == 0xd))
x->d86_memsize = 8;
else
x->d86_memsize = dp->it_size;
} else if (wbit == 0) {
x->d86_memsize = 1;
} else if (wbit == LONG_OPND) {
if (opnd_size == SIZE64)
x->d86_memsize = 8;
else if (opnd_size == SIZE32)
x->d86_memsize = 4;
else
x->d86_memsize = 2;
} else if (wbit == SEG_OPND) {
x->d86_memsize = 4;
} else {
x->d86_memsize = 8;
}
#endif
return (0);
error:
#ifdef DIS_TEXT
(void) strlcat(x->d86_mneu, "undef", OPLEN);
#endif
return (1);
}
#ifdef DIS_TEXT
/*
* Some instructions should have immediate operands printed
* as unsigned integers. We compare against this table.
*/
static char *unsigned_ops[] = {
"or", "and", "xor", "test", "in", "out", "lcall", "ljmp",
"rcr", "rcl", "ror", "rol", "shl", "shr", "sal", "psr", "psl",
0
};
static int
isunsigned_op(char *opcode)
{
char *where;
int i;
int is_unsigned = 0;
/*
* Work back to start of last mnemonic, since we may have
* prefixes on some opcodes.
*/
where = opcode + strlen(opcode) - 1;
while (where > opcode && *where != ' ')
--where;
if (*where == ' ')
++where;
for (i = 0; unsigned_ops[i]; ++i) {
if (strncmp(where, unsigned_ops[i],
strlen(unsigned_ops[i])))
continue;
is_unsigned = 1;
break;
}
return (is_unsigned);
}
/* ARGSUSED */
void
dtrace_disx86_str(dis86_t *dis, uint_t mode, uintptr_t pc, char *buf,
size_t buflen)
{
int i;
dis->d86_sprintf_func(buf, buflen, "%-6s ", dis->d86_mneu);
/*
* For PC-relative jumps, the pc is really the next pc after executing
* this instruction, so increment it appropriately.
*/
pc += dis->d86_len;
for (i = 0; i < dis->d86_numopnds; i++) {
d86opnd_t *op = &dis->d86_opnd[i];
int64_t sv;
uint64_t mask;
if (i != 0)
(void) strlcat(buf, ",", buflen);
(void) strlcat(buf, op->d86_prefix, buflen);
sv = op->d86_value;
switch (op->d86_mode) {
case MODE_NONE:
(void) strlcat(buf, op->d86_opnd, buflen);
break;
case MODE_SIGNED:
case MODE_IMPLIED:
case MODE_OFFSET:
if (dis->d86_seg_prefix)
(void) strlcat(buf, dis->d86_seg_prefix,
buflen);
switch (op->d86_value_size) {
case 1:
sv = (int8_t)sv;
mask = 0xff;
break;
case 2:
sv = (int16_t)sv;
mask = 0xffff;
break;
case 4:
sv = (int32_t)sv;
mask = 0xffffffff;
break;
case 8:
mask = 0xffffffffffffffffULL;
break;
}
if (op->d86_mode == MODE_SIGNED ||
op->d86_mode == MODE_IMPLIED)
(void) strlcat(buf, "$", buflen);
if (sv < 0 && sv > -0xffff &&
!isunsigned_op(dis->d86_mneu)) {
dis->d86_sprintf_func(buf + strlen(buf),
buflen - strlen(buf),
(dis->d86_flags & DIS_OP_OCTAL) ?
"-0%llo" : "-0x%llx", -sv & mask);
} else {
dis->d86_sprintf_func(buf + strlen(buf),
buflen - strlen(buf),
(dis->d86_flags & DIS_OP_OCTAL) ?
"0%llo" : "0x%llx", sv & mask);
}
(void) strlcat(buf, op->d86_opnd, buflen);
break;
case MODE_IPREL:
switch (op->d86_value_size) {
case 1:
sv = (int8_t)sv;
break;
case 2:
sv = (int16_t)sv;
break;
case 4:
sv = (int32_t)sv;
break;
}
if (sv < 0)
dis->d86_sprintf_func(buf + strlen(buf),
buflen - strlen(buf),
(dis->d86_flags & DIS_OP_OCTAL) ?
"-0%llo" : "-0x%llx", -sv - dis->d86_len);
else
dis->d86_sprintf_func(buf + strlen(buf),
buflen - strlen(buf),
(dis->d86_flags & DIS_OP_OCTAL) ?
"+0%llo" : "+0x%llx", sv + dis->d86_len);
(void) strlcat(buf, "\t<", buflen);
if (dis->d86_sym_lookup == NULL ||
dis->d86_sym_lookup(dis->d86_data, pc + sv,
buf + strlen(buf), buflen - strlen(buf)) != 0)
dis->d86_sprintf_func(buf + strlen(buf),
buflen - strlen(buf),
(dis->d86_flags & DIS_OP_OCTAL) ?
"0%llo" : "0x%llx", pc + sv);
(void) strlcat(buf, ">", buflen);
break;
}
}
}
#endif /* DIS_TEXT */