646 lines
16 KiB
C++
646 lines
16 KiB
C++
/////////////////////////////////////////////////////////////////////////
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// $Id: dis_groups.cc,v 1.37 2007-08-31 18:09:34 sshwarts Exp $
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/////////////////////////////////////////////////////////////////////////
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#include <stdio.h>
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#include <assert.h>
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#include "disasm.h"
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/*
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#if BX_DEBUGGER
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#include "../bx_debug/debug.h"
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#endif
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*/
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void disassembler::Apw(const x86_insn *insn)
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{
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Bit16u imm16 = fetch_word();
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Bit16u cs_selector = fetch_word();
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dis_sprintf("%04x:%04x", (unsigned) cs_selector, (unsigned) imm16);
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}
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void disassembler::Apd(const x86_insn *insn)
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{
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Bit32u imm32 = fetch_dword();
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Bit16u cs_selector = fetch_word();
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dis_sprintf("%04x:%08x", (unsigned) cs_selector, (unsigned) imm32);
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}
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// 8-bit general purpose registers
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void disassembler::AL(const x86_insn *insn) { dis_sprintf("%s", general_8bit_regname[rAX_REG]); }
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void disassembler::CL(const x86_insn *insn) { dis_sprintf("%s", general_8bit_regname[rCX_REG]); }
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// 16-bit general purpose registers
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void disassembler::AX(const x86_insn *insn) {
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dis_sprintf("%s", general_16bit_regname[rAX_REG]);
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}
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void disassembler::DX(const x86_insn *insn) {
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dis_sprintf("%s", general_16bit_regname[rDX_REG]);
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}
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// 32-bit general purpose registers
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void disassembler::EAX(const x86_insn *insn)
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{
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dis_sprintf("%s", general_32bit_regname[rAX_REG]);
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}
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// 64-bit general purpose registers
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void disassembler::RAX(const x86_insn *insn)
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{
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dis_sprintf("%s", general_64bit_regname[rAX_REG]);
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}
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// segment registers
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void disassembler::CS(const x86_insn *insn) { dis_sprintf("%s", segment_name[CS_REG]); }
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void disassembler::DS(const x86_insn *insn) { dis_sprintf("%s", segment_name[DS_REG]); }
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void disassembler::ES(const x86_insn *insn) { dis_sprintf("%s", segment_name[ES_REG]); }
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void disassembler::SS(const x86_insn *insn) { dis_sprintf("%s", segment_name[SS_REG]); }
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void disassembler::FS(const x86_insn *insn) { dis_sprintf("%s", segment_name[FS_REG]); }
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void disassembler::GS(const x86_insn *insn) { dis_sprintf("%s", segment_name[GS_REG]); }
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void disassembler::Sw(const x86_insn *insn) { dis_sprintf("%s", segment_name[insn->nnn]); }
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// test registers
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void disassembler::Td(const x86_insn *insn)
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{
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if (intel_mode)
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dis_sprintf ("tr%d", insn->nnn);
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else
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dis_sprintf("%%tr%d", insn->nnn);
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}
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// control register
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void disassembler::Cd(const x86_insn *insn)
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{
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if (intel_mode)
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dis_sprintf ("cr%d", insn->nnn);
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else
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dis_sprintf("%%cr%d", insn->nnn);
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}
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void disassembler::Cq(const x86_insn *insn) { Cd(insn); }
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// debug register
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void disassembler::Dd(const x86_insn *insn)
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{
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if (intel_mode)
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dis_sprintf ("db%d", insn->nnn);
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else
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dis_sprintf("%%db%d", insn->nnn);
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}
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void disassembler::Dq(const x86_insn *insn) { Dd(insn); }
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// 8-bit general purpose register
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void disassembler::R8(const x86_insn *insn)
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{
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unsigned reg = (insn->b1 & 7) | insn->rex_b;
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if (reg < 4 || insn->extend8b)
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dis_sprintf("%s", general_8bit_regname_rex[reg]);
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else
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dis_sprintf("%s", general_8bit_regname[reg]);
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}
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// 16-bit general purpose register
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void disassembler::RX(const x86_insn *insn)
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{
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dis_sprintf("%s", general_16bit_regname[(insn->b1 & 7) | insn->rex_b]);
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}
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// 32-bit general purpose register
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void disassembler::ERX(const x86_insn *insn)
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{
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dis_sprintf("%s", general_32bit_regname[(insn->b1 & 7) | insn->rex_b]);
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}
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// 64-bit general purpose register
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void disassembler::RRX(const x86_insn *insn)
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{
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dis_sprintf("%s", general_64bit_regname[(insn->b1 & 7) | insn->rex_b]);
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}
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// general purpose register or memory operand
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void disassembler::Eb(const x86_insn *insn)
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{
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if (insn->mod == 3) {
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if (insn->rm < 4 || insn->extend8b)
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dis_sprintf("%s", general_8bit_regname_rex[insn->rm]);
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else
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dis_sprintf("%s", general_8bit_regname[insn->rm]);
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}
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else
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(this->*resolve_modrm)(insn, B_SIZE);
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}
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void disassembler::Ew(const x86_insn *insn)
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{
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if (insn->mod == 3)
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dis_sprintf("%s", general_16bit_regname[insn->rm]);
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else
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(this->*resolve_modrm)(insn, W_SIZE);
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}
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void disassembler::Ed(const x86_insn *insn)
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{
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if (insn->mod == 3)
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dis_sprintf("%s", general_32bit_regname[insn->rm]);
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else
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(this->*resolve_modrm)(insn, D_SIZE);
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}
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void disassembler::Eq(const x86_insn *insn)
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{
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if (insn->mod == 3)
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dis_sprintf("%s", general_64bit_regname[insn->rm]);
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else
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(this->*resolve_modrm)(insn, Q_SIZE);
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}
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void disassembler::Hbd(const x86_insn *insn)
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{
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if (insn->mod == 3)
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dis_sprintf("%s", general_32bit_regname[insn->nnn]);
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else
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(this->*resolve_modrm)(insn, B_SIZE);
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}
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void disassembler::Hwd(const x86_insn *insn)
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{
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if (insn->mod == 3)
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dis_sprintf("%s", general_32bit_regname[insn->nnn]);
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else
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(this->*resolve_modrm)(insn, W_SIZE);
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}
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void disassembler::Hd(const x86_insn *insn)
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{
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if (insn->mod == 3)
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dis_sprintf("%s", general_32bit_regname[insn->nnn]);
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else
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(this->*resolve_modrm)(insn, D_SIZE);
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}
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void disassembler::Hq(const x86_insn *insn)
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{
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if (insn->mod == 3)
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dis_sprintf("%s", general_32bit_regname[insn->nnn]);
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else
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(this->*resolve_modrm)(insn, Q_SIZE);
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}
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// general purpose register
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void disassembler::Gb(const x86_insn *insn)
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{
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if (insn->nnn < 4 || insn->extend8b)
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dis_sprintf("%s", general_8bit_regname_rex[insn->nnn]);
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else
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dis_sprintf("%s", general_8bit_regname[insn->nnn]);
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}
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void disassembler::Gw(const x86_insn *insn)
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{
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dis_sprintf("%s", general_16bit_regname[insn->nnn]);
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}
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void disassembler::Gd(const x86_insn *insn)
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{
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dis_sprintf("%s", general_32bit_regname[insn->nnn]);
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}
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void disassembler::Gq(const x86_insn *insn)
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{
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dis_sprintf("%s", general_64bit_regname[insn->nnn]);
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}
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// immediate
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void disassembler::I1(const x86_insn *insn)
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{
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if (! intel_mode) dis_putc('$');
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dis_putc ('1');
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}
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void disassembler::Ib(const x86_insn *insn)
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{
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if (! intel_mode) dis_putc('$');
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dis_sprintf("0x%02x", (unsigned) fetch_byte());
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}
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void disassembler::Iw(const x86_insn *insn)
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{
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if (! intel_mode) dis_putc('$');
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dis_sprintf("0x%04x", (unsigned) fetch_word());
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}
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void disassembler::IwIb(const x86_insn *insn)
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{
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Bit16u iw = fetch_word();
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Bit8u ib = fetch_byte();
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if (intel_mode) {
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dis_sprintf("0x%04x, 0x%02x", iw, ib);
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}
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else {
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dis_sprintf("$0x%02x, $0x%04x", ib, iw);
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}
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}
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void disassembler::Id(const x86_insn *insn)
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{
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if (! intel_mode) dis_putc('$');
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dis_sprintf("0x%08x", (unsigned) fetch_dword());
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}
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void disassembler::Iq(const x86_insn *insn)
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{
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Bit64u value = fetch_qword();
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if (! intel_mode) dis_putc('$');
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dis_sprintf("0x%08x%08x", GET32H(value), GET32L(value));
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}
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// sign extended immediate
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void disassembler::sIbw(const x86_insn *insn)
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{
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if (! intel_mode) dis_putc('$');
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Bit16u imm16 = (Bit8s) fetch_byte();
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dis_sprintf("0x%04x", (unsigned) imm16);
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}
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// sign extended immediate
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void disassembler::sIbd(const x86_insn *insn)
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{
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if (! intel_mode) dis_putc('$');
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Bit32u imm32 = (Bit8s) fetch_byte();
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dis_sprintf ("0x%08x", (unsigned) imm32);
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}
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// sign extended immediate
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void disassembler::sIbq(const x86_insn *insn)
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{
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if (! intel_mode) dis_putc('$');
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Bit64u imm64 = (Bit8s) fetch_byte();
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dis_sprintf ("0x%08x%08x", GET32H(imm64), GET32L(imm64));
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}
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// sign extended immediate
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void disassembler::sIdq(const x86_insn *insn)
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{
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if (! intel_mode) dis_putc('$');
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Bit64u imm64 = (Bit32s) fetch_dword();
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dis_sprintf ("0x%08x%08x", GET32H(imm64), GET32L(imm64));
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}
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// floating point
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void disassembler::ST0(const x86_insn *insn)
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{
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if (intel_mode)
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dis_sprintf ("st(0)");
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else
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dis_sprintf("%%st(0)");
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}
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void disassembler::STi(const x86_insn *insn)
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{
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if (intel_mode)
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dis_sprintf ("st(%d)", insn->rm);
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else
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dis_sprintf("%%st(%d)", insn->rm);
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}
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// 16-bit general purpose register
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void disassembler::Rw(const x86_insn *insn)
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{
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dis_sprintf("%s", general_16bit_regname[insn->rm]);
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}
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// 32-bit general purpose register
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void disassembler::Rd(const x86_insn *insn)
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{
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dis_sprintf("%s", general_32bit_regname[insn->rm]);
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}
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// 64-bit general purpose register
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void disassembler::Rq(const x86_insn *insn)
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{
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dis_sprintf("%s", general_64bit_regname[insn->rm]);
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}
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// mmx register
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void disassembler::Pq(const x86_insn *insn)
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{
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if (intel_mode)
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dis_sprintf ("mm%d", insn->nnn);
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else
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dis_sprintf("%%mm%d", insn->nnn);
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}
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void disassembler::Nq(const x86_insn *insn)
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{
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if (intel_mode)
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dis_sprintf ("mm%d", insn->rm);
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else
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dis_sprintf("%%mm%d", insn->rm);
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}
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void disassembler::Qd(const x86_insn *insn)
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{
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if (insn->mod == 3)
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{
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if (intel_mode)
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dis_sprintf ("mm%d", insn->rm);
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else
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dis_sprintf("%%mm%d", insn->rm);
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}
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else
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(this->*resolve_modrm)(insn, D_SIZE);
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}
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void disassembler::Qq(const x86_insn *insn)
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{
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if (insn->mod == 3)
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{
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if (intel_mode)
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dis_sprintf ("mm%d", insn->rm);
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else
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dis_sprintf("%%mm%d", insn->rm);
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}
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else
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(this->*resolve_modrm)(insn, Q_SIZE);
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}
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// xmm register
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void disassembler::Udq(const x86_insn *insn)
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{
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if (intel_mode)
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dis_sprintf ("xmm%d", insn->rm);
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else
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dis_sprintf("%%xmm%d", insn->rm);
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}
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void disassembler::Vq(const x86_insn *insn)
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{
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if (intel_mode)
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dis_sprintf ("xmm%d", insn->nnn);
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else
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dis_sprintf("%%xmm%d", insn->nnn);
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}
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void disassembler::Vdq(const x86_insn *insn) { Vq(insn); }
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void disassembler::Vss(const x86_insn *insn) { Vq(insn); }
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void disassembler::Vsd(const x86_insn *insn) { Vq(insn); }
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void disassembler::Vps(const x86_insn *insn) { Vq(insn); }
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void disassembler::Vpd(const x86_insn *insn) { Vq(insn); }
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void disassembler::Ww(const x86_insn *insn)
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{
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if (insn->mod == 3)
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{
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if (intel_mode)
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dis_sprintf ("xmm%d", insn->rm);
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else
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dis_sprintf("%%xmm%d", insn->rm);
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}
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else
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(this->*resolve_modrm)(insn, W_SIZE);
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}
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void disassembler::Wd(const x86_insn *insn)
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{
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if (insn->mod == 3)
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{
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if (intel_mode)
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dis_sprintf ("xmm%d", insn->rm);
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else
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dis_sprintf("%%xmm%d", insn->rm);
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}
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else
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(this->*resolve_modrm)(insn, D_SIZE);
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}
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void disassembler::Wq(const x86_insn *insn)
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{
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if (insn->mod == 3)
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{
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if (intel_mode)
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dis_sprintf ("xmm%d", insn->rm);
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else
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dis_sprintf("%%xmm%d", insn->rm);
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}
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else
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(this->*resolve_modrm)(insn, Q_SIZE);
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}
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void disassembler::Wdq(const x86_insn *insn)
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{
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if (insn->mod == 3)
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{
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if (intel_mode)
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dis_sprintf ("xmm%d", insn->rm);
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else
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dis_sprintf("%%xmm%d", insn->rm);
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}
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else
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(this->*resolve_modrm)(insn, O_SIZE);
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}
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void disassembler::Wsd(const x86_insn *insn) { Wq(insn); }
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void disassembler::Wss(const x86_insn *insn) { Wd(insn); }
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void disassembler::Wpd(const x86_insn *insn) { Wdq(insn); }
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void disassembler::Wps(const x86_insn *insn) { Wdq(insn); }
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// direct memory access
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void disassembler::OP_O(const x86_insn *insn, unsigned size)
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{
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const char *seg;
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if (insn->is_seg_override())
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seg = segment_name[insn->seg_override];
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else
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seg = segment_name[DS_REG];
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print_datasize(size);
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if (insn->as_64) {
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Bit64u imm64 = fetch_qword();
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dis_sprintf("%s:0x%08x%08x", seg, GET32H(imm64), GET32L(imm64));
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}
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else if (insn->as_32) {
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Bit32u imm32 = fetch_dword();
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dis_sprintf("%s:0x%x", seg, (unsigned) imm32);
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}
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else {
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Bit16u imm16 = fetch_word();
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dis_sprintf("%s:0x%x", seg, (unsigned) imm16);
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}
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}
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void disassembler::Ob(const x86_insn *insn) { OP_O(insn, B_SIZE); }
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void disassembler::Ow(const x86_insn *insn) { OP_O(insn, W_SIZE); }
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void disassembler::Od(const x86_insn *insn) { OP_O(insn, D_SIZE); }
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void disassembler::Oq(const x86_insn *insn) { OP_O(insn, Q_SIZE); }
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// memory operand
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void disassembler::OP_M(const x86_insn *insn, unsigned size)
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{
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if(insn->mod == 3)
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dis_sprintf("(bad)");
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else
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(this->*resolve_modrm)(insn, size);
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}
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void disassembler::Ma(const x86_insn *insn) { OP_M(insn, X_SIZE); }
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void disassembler::Mp(const x86_insn *insn) { OP_M(insn, X_SIZE); }
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void disassembler::Ms(const x86_insn *insn) { OP_M(insn, X_SIZE); }
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void disassembler::Mx(const x86_insn *insn) { OP_M(insn, X_SIZE); }
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void disassembler::Mb(const x86_insn *insn) { OP_M(insn, B_SIZE); }
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void disassembler::Mw(const x86_insn *insn) { OP_M(insn, W_SIZE); }
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void disassembler::Md(const x86_insn *insn) { OP_M(insn, D_SIZE); }
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void disassembler::Mq(const x86_insn *insn) { OP_M(insn, Q_SIZE); }
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void disassembler::Mt(const x86_insn *insn) { OP_M(insn, T_SIZE); }
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void disassembler::Mdq(const x86_insn *insn) { OP_M(insn, O_SIZE); }
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void disassembler::Mps(const x86_insn *insn) { OP_M(insn, O_SIZE); }
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void disassembler::Mpd(const x86_insn *insn) { OP_M(insn, O_SIZE); }
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void disassembler::Mss(const x86_insn *insn) { OP_M(insn, D_SIZE); }
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void disassembler::Msd(const x86_insn *insn) { OP_M(insn, Q_SIZE); }
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// string instructions
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void disassembler::OP_X(const x86_insn *insn, unsigned size)
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{
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const char *rsi, *seg;
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if (insn->as_64) {
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rsi = general_64bit_regname[rSI_REG];
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}
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else {
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if (insn->as_32)
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rsi = general_32bit_regname[rSI_REG];
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else
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rsi = general_16bit_regname[rSI_REG];
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}
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if (insn->is_seg_override())
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seg = segment_name[insn->seg_override];
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else
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seg = segment_name[DS_REG];
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print_datasize(size);
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if (intel_mode)
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dis_sprintf("%s:[%s]", seg, rsi);
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else
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dis_sprintf("%s:(%s)", seg, rsi);
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}
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void disassembler::Xb(const x86_insn *insn) { OP_X(insn, B_SIZE); }
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void disassembler::Xw(const x86_insn *insn) { OP_X(insn, W_SIZE); }
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void disassembler::Xd(const x86_insn *insn) { OP_X(insn, D_SIZE); }
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void disassembler::Xq(const x86_insn *insn) { OP_X(insn, Q_SIZE); }
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void disassembler::OP_Y(const x86_insn *insn, unsigned size)
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{
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const char *rdi;
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if (insn->as_64) {
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rdi = general_64bit_regname[rDI_REG];
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}
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else {
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if (insn->as_32)
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rdi = general_32bit_regname[rDI_REG];
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else
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rdi = general_16bit_regname[rDI_REG];
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}
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print_datasize(size);
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if (intel_mode)
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dis_sprintf("%s:[%s]", segment_name[ES_REG], rdi);
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else
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dis_sprintf("%s:(%s)", segment_name[ES_REG], rdi);
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}
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void disassembler::Yb(const x86_insn *insn) { OP_Y(insn, B_SIZE); }
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void disassembler::Yw(const x86_insn *insn) { OP_Y(insn, W_SIZE); }
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void disassembler::Yd(const x86_insn *insn) { OP_Y(insn, D_SIZE); }
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void disassembler::Yq(const x86_insn *insn) { OP_Y(insn, Q_SIZE); }
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#define BX_JUMP_TARGET_NOT_REQ ((bx_address)(-1))
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// jump offset
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void disassembler::Jb(const x86_insn *insn)
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{
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Bit8s imm8 = (Bit8s) fetch_byte();
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if (insn->is_64) {
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Bit64u imm64 = (Bit64s) imm8;
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dis_sprintf(".+0x%08x%08x", GET32H(imm64), GET32L(imm64));
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if (db_base != BX_JUMP_TARGET_NOT_REQ) {
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Bit64u target = db_eip + (Bit64s) imm64; target += db_base;
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dis_sprintf(" (0x%08x%08x)", GET32H(target), GET32L(target));
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}
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return;
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}
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if (insn->os_32) {
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Bit32u imm32 = (Bit32s) imm8;
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dis_sprintf(".+0x%08x", (unsigned) imm32);
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if (db_base != BX_JUMP_TARGET_NOT_REQ) {
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Bit32u target = db_eip + (Bit32s) imm32; target += db_base;
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dis_sprintf(" (0x%08x)", target);
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}
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}
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else {
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Bit16u imm16 = (Bit16s) imm8;
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dis_sprintf(".+0x%04x", (unsigned) imm16);
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if (db_base != BX_JUMP_TARGET_NOT_REQ) {
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Bit16u target = (db_eip + (Bit16s) imm16) & 0xffff;
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dis_sprintf(" (0x%08x)", target + db_base);
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}
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}
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}
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void disassembler::Jw(const x86_insn *insn)
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{
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// Jw supported in 16-bit mode only
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assert(! insn->is_64);
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Bit16u imm16 = (Bit16s) fetch_word();
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dis_sprintf(".+0x%04x", (unsigned) imm16);
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if (db_base != BX_JUMP_TARGET_NOT_REQ) {
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Bit16u target = (db_eip + (Bit16s) imm16) & 0xffff;
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dis_sprintf(" (0x%08x)", target + db_base);
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}
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}
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void disassembler::Jd(const x86_insn *insn)
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{
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Bit32s imm32 = (Bit32s) fetch_dword();
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if (insn->is_64) {
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Bit64u imm64 = (Bit64s) imm32;
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dis_sprintf(".+0x%08x%08x", GET32H(imm64), GET32L(imm64));
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if (db_base != BX_JUMP_TARGET_NOT_REQ) {
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Bit64u target = db_eip + (Bit64s) imm64; target += db_base;
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|
dis_sprintf(" (0x%08x%08x)", GET32H(target), GET32L(target));
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}
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return;
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}
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|
dis_sprintf(".+0x%08x", (unsigned) imm32);
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if (db_base != BX_JUMP_TARGET_NOT_REQ) {
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|
Bit32u target = db_eip + (Bit32s) imm32; target += db_base;
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|
dis_sprintf(" (0x%08x)", target);
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|
}
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}
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