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//===- X86RecognizableInstr.cpp - Disassembler instruction spec --*- C++ -*-===//
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// The LLVM Compiler Infrastructure
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//===----------------------------------------------------------------------===//
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// This file is part of the X86 Disassembler Emitter.
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// It contains the implementation of a single recognizable instruction.
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// Documentation for the disassembler emitter in general can be found in
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// X86DisasemblerEmitter.h.
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//===----------------------------------------------------------------------===//
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#include "X86DisassemblerShared.h"
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#include "X86RecognizableInstr.h"
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#include "X86ModRMFilters.h"
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#include "llvm/Support/ErrorHandling.h"
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// A clone of X86 since we can't depend on something that is generated.
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MRM0r = 16, MRM1r = 17, MRM2r = 18, MRM3r = 19,
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MRM4r = 20, MRM5r = 21, MRM6r = 22, MRM7r = 23,
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MRM0m = 24, MRM1m = 25, MRM2m = 26, MRM3m = 27,
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MRM4m = 28, MRM5m = 29, MRM6m = 30, MRM7m = 31,
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#define MAP(from, to) MRM_##from = to,
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D8 = 3, D9 = 4, DA = 5, DB = 6,
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DC = 7, DD = 8, DE = 9, DF = 10,
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P_0F_AE = 16, P_0F_01 = 17
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// If rows are added to the opcode extension tables, then corresponding entries
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// must be added here.
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// If the row corresponds to a single byte (i.e., 8f), then add an entry for
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// that byte to ONE_BYTE_EXTENSION_TABLES.
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// If the row corresponds to two bytes where the first is 0f, add an entry for
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// the second byte to TWO_BYTE_EXTENSION_TABLES.
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// If the row corresponds to some other set of bytes, you will need to modify
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// the code in RecognizableInstr::emitDecodePath() as well, and add new prefixes
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// to the X86 TD files, except in two cases: if the first two bytes of such a
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// new combination are 0f 38 or 0f 3a, you just have to add maps called
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// THREE_BYTE_38_EXTENSION_TABLES and THREE_BYTE_3A_EXTENSION_TABLES and add a
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// switch(Opcode) just below the case X86Local::T8: or case X86Local::TA: line
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// in RecognizableInstr::emitDecodePath().
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#define ONE_BYTE_EXTENSION_TABLES \
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EXTENSION_TABLE(d1) \
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EXTENSION_TABLE(d2) \
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EXTENSION_TABLE(d3) \
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EXTENSION_TABLE(f6) \
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EXTENSION_TABLE(f7) \
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EXTENSION_TABLE(fe) \
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#define TWO_BYTE_EXTENSION_TABLES \
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EXTENSION_TABLE(00) \
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EXTENSION_TABLE(01) \
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EXTENSION_TABLE(18) \
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EXTENSION_TABLE(71) \
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EXTENSION_TABLE(72) \
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EXTENSION_TABLE(73) \
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EXTENSION_TABLE(ae) \
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EXTENSION_TABLE(b9) \
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EXTENSION_TABLE(ba) \
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using namespace X86Disassembler;
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/// needsModRMForDecode - Indicates whether a particular instruction requires a
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/// ModR/M byte for the instruction to be properly decoded. For example, a
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/// MRMDestReg instruction needs the Mod field in the ModR/M byte to be set to
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/// @param form - The form of the instruction.
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/// @return - true if the form implies that a ModR/M byte is required, false
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static bool needsModRMForDecode(uint8_t form) {
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if (form == X86Local::MRMDestReg ||
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form == X86Local::MRMDestMem ||
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form == X86Local::MRMSrcReg ||
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form == X86Local::MRMSrcMem ||
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(form >= X86Local::MRM0r && form <= X86Local::MRM7r) ||
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(form >= X86Local::MRM0m && form <= X86Local::MRM7m))
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/// isRegFormat - Indicates whether a particular form requires the Mod field of
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/// the ModR/M byte to be 0b11.
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/// @param form - The form of the instruction.
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/// @return - true if the form implies that Mod must be 0b11, false
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static bool isRegFormat(uint8_t form) {
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if (form == X86Local::MRMDestReg ||
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form == X86Local::MRMSrcReg ||
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(form >= X86Local::MRM0r && form <= X86Local::MRM7r))
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/// byteFromBitsInit - Extracts a value at most 8 bits in width from a BitsInit.
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/// Useful for switch statements and the like.
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/// @param init - A reference to the BitsInit to be decoded.
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/// @return - The field, with the first bit in the BitsInit as the lowest
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static uint8_t byteFromBitsInit(BitsInit &init) {
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int width = init.getNumBits();
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assert(width <= 8 && "Field is too large for uint8_t!");
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for (index = 0; index < width; index++) {
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if (static_cast<BitInit*>(init.getBit(index))->getValue())
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/// byteFromRec - Extract a value at most 8 bits in with from a Record given the
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/// name of the field.
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/// @param rec - The record from which to extract the value.
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/// @param name - The name of the field in the record.
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/// @return - The field, as translated by byteFromBitsInit().
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static uint8_t byteFromRec(const Record* rec, const std::string &name) {
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BitsInit* bits = rec->getValueAsBitsInit(name);
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return byteFromBitsInit(*bits);
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RecognizableInstr::RecognizableInstr(DisassemblerTables &tables,
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const CodeGenInstruction &insn,
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Name = Rec->getName();
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Spec = &tables.specForUID(UID);
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if (!Rec->isSubClassOf("X86Inst")) {
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ShouldBeEmitted = false;
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Prefix = byteFromRec(Rec, "Prefix");
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Opcode = byteFromRec(Rec, "Opcode");
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Form = byteFromRec(Rec, "FormBits");
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SegOvr = byteFromRec(Rec, "SegOvrBits");
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HasOpSizePrefix = Rec->getValueAsBit("hasOpSizePrefix");
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HasREX_WPrefix = Rec->getValueAsBit("hasREX_WPrefix");
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HasVEX_4VPrefix = Rec->getValueAsBit("hasVEX_4VPrefix");
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HasLockPrefix = Rec->getValueAsBit("hasLockPrefix");
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IsCodeGenOnly = Rec->getValueAsBit("isCodeGenOnly");
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Name = Rec->getName();
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AsmString = Rec->getValueAsString("AsmString");
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Operands = &insn.OperandList;
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IsSSE = HasOpSizePrefix && (Name.find("16") == Name.npos);
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HasFROperands = false;
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ShouldBeEmitted = true;
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void RecognizableInstr::processInstr(DisassemblerTables &tables,
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const CodeGenInstruction &insn,
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// Ignore "asm parser only" instructions.
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if (insn.TheDef->getValueAsBit("isAsmParserOnly"))
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RecognizableInstr recogInstr(tables, insn, uid);
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recogInstr.emitInstructionSpecifier(tables);
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if (recogInstr.shouldBeEmitted())
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recogInstr.emitDecodePath(tables);
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InstructionContext RecognizableInstr::insnContext() const {
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InstructionContext insnContext;
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if (Name.find("64") != Name.npos || HasREX_WPrefix) {
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if (HasREX_WPrefix && HasOpSizePrefix)
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insnContext = IC_64BIT_REXW_OPSIZE;
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else if (HasOpSizePrefix)
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insnContext = IC_64BIT_OPSIZE;
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else if (HasREX_WPrefix && Prefix == X86Local::XS)
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insnContext = IC_64BIT_REXW_XS;
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else if (HasREX_WPrefix && Prefix == X86Local::XD)
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insnContext = IC_64BIT_REXW_XD;
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else if (Prefix == X86Local::XD)
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insnContext = IC_64BIT_XD;
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else if (Prefix == X86Local::XS)
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insnContext = IC_64BIT_XS;
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else if (HasREX_WPrefix)
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insnContext = IC_64BIT_REXW;
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insnContext = IC_64BIT;
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insnContext = IC_OPSIZE;
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else if (Prefix == X86Local::XD)
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else if (Prefix == X86Local::XS)
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RecognizableInstr::filter_ret RecognizableInstr::filter() const {
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// Filter out intrinsics
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if (!Rec->isSubClassOf("X86Inst"))
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return FILTER_STRONG;
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if (Form == X86Local::Pseudo ||
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return FILTER_STRONG;
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if (Form == X86Local::MRMInitReg)
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return FILTER_STRONG;
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// Filter out instructions with a LOCK prefix;
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// prefer forms that do not have the prefix
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// Filter out artificial instructions
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if (Name.find("TAILJMP") != Name.npos ||
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Name.find("_Int") != Name.npos ||
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Name.find("_int") != Name.npos ||
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Name.find("Int_") != Name.npos ||
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Name.find("_NOREX") != Name.npos ||
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Name.find("_TC") != Name.npos ||
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Name.find("EH_RETURN") != Name.npos ||
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Name.find("V_SET") != Name.npos ||
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Name.find("LOCK_") != Name.npos ||
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Name.find("WIN") != Name.npos)
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return FILTER_STRONG;
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if (Name.find("PCMPISTRI") != Name.npos && Name != "PCMPISTRI")
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if (Name.find("PCMPESTRI") != Name.npos && Name != "PCMPESTRI")
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if (Name.find("MOV") != Name.npos && Name.find("r0") != Name.npos)
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if (Name.find("MOVZ") != Name.npos && Name.find("MOVZX") == Name.npos)
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if (Name.find("Fs") != Name.npos)
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if (Name == "MOVLPDrr" ||
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Name == "MOVLPSrr" ||
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Name == "MOVSX16rm8" ||
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Name == "MOVSX16rr8" ||
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Name == "MOVZX16rm8" ||
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Name == "MOVZX16rr8" ||
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Name == "PUSH32i16" ||
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Name == "PUSH64i16" ||
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Name == "MOVPQI2QImr" ||
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Name == "MMX_MOVD64rrv164" ||
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Name == "CRC32m16" ||
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Name == "MOV64ri64i32" ||
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// Filter out instructions with segment override prefixes.
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// They're too messy to handle now and we'll special case them if needed.
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return FILTER_STRONG;
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// Filter out instructions that can't be printed.
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if (AsmString.size() == 0)
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return FILTER_STRONG;
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// Filter out instructions with subreg operands.
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if (AsmString.find("subreg") != AsmString.npos)
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return FILTER_STRONG;
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if (HasFROperands && Name.find("MOV") != Name.npos &&
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((Name.find("2") != Name.npos && Name.find("32") == Name.npos) ||
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(Name.find("to") != Name.npos)))
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return FILTER_NORMAL;
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void RecognizableInstr::handleOperand(
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unsigned &operandIndex,
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unsigned &physicalOperandIndex,
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unsigned &numPhysicalOperands,
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unsigned *operandMapping,
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OperandEncoding (*encodingFromString)(const std::string&, bool hasOpSizePrefix)) {
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if (physicalOperandIndex >= numPhysicalOperands)
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assert(physicalOperandIndex < numPhysicalOperands);
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while (operandMapping[operandIndex] != operandIndex) {
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Spec->operands[operandIndex].encoding = ENCODING_DUP;
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Spec->operands[operandIndex].type =
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(OperandType)(TYPE_DUP0 + operandMapping[operandIndex]);
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const std::string &typeName = (*Operands)[operandIndex].Rec->getName();
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Spec->operands[operandIndex].encoding = encodingFromString(typeName,
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Spec->operands[operandIndex].type = typeFromString(typeName,
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++physicalOperandIndex;
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void RecognizableInstr::emitInstructionSpecifier(DisassemblerTables &tables) {
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if (!Rec->isSubClassOf("X86Inst"))
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Spec->filtered = true;
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ShouldBeEmitted = false;
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Spec->insnContext = insnContext();
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const std::vector<CodeGenInstruction::OperandInfo> &OperandList = *Operands;
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unsigned operandIndex;
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unsigned numOperands = OperandList.size();
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unsigned numPhysicalOperands = 0;
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// operandMapping maps from operands in OperandList to their originals.
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// If operandMapping[i] != i, then the entry is a duplicate.
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unsigned operandMapping[X86_MAX_OPERANDS];
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bool hasFROperands = false;
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assert(numOperands < X86_MAX_OPERANDS && "X86_MAX_OPERANDS is not large enough");
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for (operandIndex = 0; operandIndex < numOperands; ++operandIndex) {
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if (OperandList[operandIndex].Constraints.size()) {
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const CodeGenInstruction::ConstraintInfo &Constraint =
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OperandList[operandIndex].Constraints[0];
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if (Constraint.isTied()) {
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operandMapping[operandIndex] = Constraint.getTiedOperand();
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++numPhysicalOperands;
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operandMapping[operandIndex] = operandIndex;
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++numPhysicalOperands;
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operandMapping[operandIndex] = operandIndex;
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const std::string &recName = OperandList[operandIndex].Rec->getName();
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if (recName.find("FR") != recName.npos)
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hasFROperands = true;
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if (hasFROperands && Name.find("MOV") != Name.npos &&
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((Name.find("2") != Name.npos && Name.find("32") == Name.npos) ||
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(Name.find("to") != Name.npos)))
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ShouldBeEmitted = false;
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if (!ShouldBeEmitted)
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#define HANDLE_OPERAND(class) \
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handleOperand(false, \
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physicalOperandIndex, \
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numPhysicalOperands, \
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class##EncodingFromString);
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#define HANDLE_OPTIONAL(class) \
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handleOperand(true, \
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physicalOperandIndex, \
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numPhysicalOperands, \
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class##EncodingFromString);
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// operandIndex should always be < numOperands
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// physicalOperandIndex should always be < numPhysicalOperands
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unsigned physicalOperandIndex = 0;
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case X86Local::RawFrm:
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// Operand 1 (optional) is an address or immediate.
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// Operand 2 (optional) is an immediate.
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assert(numPhysicalOperands <= 2 &&
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"Unexpected number of operands for RawFrm");
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HANDLE_OPTIONAL(relocation)
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HANDLE_OPTIONAL(immediate)
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case X86Local::AddRegFrm:
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// Operand 1 is added to the opcode.
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// Operand 2 (optional) is an address.
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assert(numPhysicalOperands >= 1 && numPhysicalOperands <= 2 &&
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"Unexpected number of operands for AddRegFrm");
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HANDLE_OPERAND(opcodeModifier)
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HANDLE_OPTIONAL(relocation)
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case X86Local::MRMDestReg:
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// Operand 1 is a register operand in the R/M field.
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// Operand 2 is a register operand in the Reg/Opcode field.
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// Operand 3 (optional) is an immediate.
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assert(numPhysicalOperands >= 2 && numPhysicalOperands <= 3 &&
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"Unexpected number of operands for MRMDestRegFrm");
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HANDLE_OPERAND(rmRegister)
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HANDLE_OPERAND(roRegister)
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HANDLE_OPTIONAL(immediate)
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case X86Local::MRMDestMem:
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// Operand 1 is a memory operand (possibly SIB-extended)
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// Operand 2 is a register operand in the Reg/Opcode field.
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// Operand 3 (optional) is an immediate.
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assert(numPhysicalOperands >= 2 && numPhysicalOperands <= 3 &&
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"Unexpected number of operands for MRMDestMemFrm");
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HANDLE_OPERAND(memory)
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HANDLE_OPERAND(roRegister)
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HANDLE_OPTIONAL(immediate)
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case X86Local::MRMSrcReg:
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// Operand 1 is a register operand in the Reg/Opcode field.
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// Operand 2 is a register operand in the R/M field.
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// Operand 3 (optional) is an immediate.
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assert(numPhysicalOperands >= 2 && numPhysicalOperands <= 3 &&
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"Unexpected number of operands for MRMSrcRegFrm");
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HANDLE_OPERAND(roRegister)
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HANDLE_OPERAND(rmRegister)
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// FIXME: In AVX, the register below becomes the one encoded
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// in ModRMVEX and the one above the one in the VEX.VVVV field
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HANDLE_OPTIONAL(rmRegister)
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HANDLE_OPTIONAL(immediate)
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case X86Local::MRMSrcMem:
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// Operand 1 is a register operand in the Reg/Opcode field.
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// Operand 2 is a memory operand (possibly SIB-extended)
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// Operand 3 (optional) is an immediate.
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assert(numPhysicalOperands >= 2 && numPhysicalOperands <= 3 &&
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"Unexpected number of operands for MRMSrcMemFrm");
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HANDLE_OPERAND(roRegister)
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// FIXME: In AVX, the register below becomes the one encoded
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// in ModRMVEX and the one above the one in the VEX.VVVV field
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HANDLE_OPTIONAL(rmRegister)
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HANDLE_OPERAND(memory)
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HANDLE_OPTIONAL(immediate)
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case X86Local::MRM0r:
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case X86Local::MRM1r:
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case X86Local::MRM2r:
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case X86Local::MRM3r:
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case X86Local::MRM4r:
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case X86Local::MRM5r:
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case X86Local::MRM6r:
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case X86Local::MRM7r:
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// Operand 1 is a register operand in the R/M field.
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// Operand 2 (optional) is an immediate or relocation.
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assert(numPhysicalOperands <= 2 &&
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"Unexpected number of operands for MRMnRFrm");
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HANDLE_OPTIONAL(rmRegister)
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HANDLE_OPTIONAL(relocation)
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case X86Local::MRM0m:
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case X86Local::MRM1m:
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case X86Local::MRM2m:
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case X86Local::MRM3m:
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case X86Local::MRM4m:
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case X86Local::MRM5m:
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case X86Local::MRM6m:
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case X86Local::MRM7m:
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// Operand 1 is a memory operand (possibly SIB-extended)
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// Operand 2 (optional) is an immediate or relocation.
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assert(numPhysicalOperands >= 1 && numPhysicalOperands <= 2 &&
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"Unexpected number of operands for MRMnMFrm");
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HANDLE_OPERAND(memory)
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HANDLE_OPTIONAL(relocation)
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case X86Local::MRMInitReg:
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#undef HANDLE_OPERAND
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#undef HANDLE_OPTIONAL
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void RecognizableInstr::emitDecodePath(DisassemblerTables &tables) const {
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// Special cases where the LLVM tables are not complete
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#define MAP(from, to) \
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case X86Local::MRM_##from: \
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filter = new ExactFilter(0x##from); \
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OpcodeType opcodeType = (OpcodeType)-1;
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ModRMFilter* filter = NULL;
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uint8_t opcodeToSet = 0;
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// Extended two-byte opcodes can start with f2 0f, f3 0f, or 0f
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opcodeType = TWOBYTE;
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if (needsModRMForDecode(Form))
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filter = new ModFilter(isRegFormat(Form));
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filter = new DumbFilter();
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#define EXTENSION_TABLE(n) case 0x##n:
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TWO_BYTE_EXTENSION_TABLES
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#undef EXTENSION_TABLE
631
llvm_unreachable("Unhandled two-byte extended opcode");
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case X86Local::MRM0r:
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case X86Local::MRM1r:
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case X86Local::MRM2r:
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case X86Local::MRM3r:
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case X86Local::MRM4r:
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case X86Local::MRM5r:
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case X86Local::MRM6r:
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case X86Local::MRM7r:
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filter = new ExtendedFilter(true, Form - X86Local::MRM0r);
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case X86Local::MRM0m:
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case X86Local::MRM1m:
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case X86Local::MRM2m:
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case X86Local::MRM3m:
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case X86Local::MRM4m:
647
case X86Local::MRM5m:
648
case X86Local::MRM6m:
649
case X86Local::MRM7m:
650
filter = new ExtendedFilter(false, Form - X86Local::MRM0m);
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opcodeToSet = Opcode;
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opcodeType = THREEBYTE_38;
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if (needsModRMForDecode(Form))
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filter = new ModFilter(isRegFormat(Form));
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filter = new DumbFilter();
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opcodeToSet = Opcode;
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opcodeType = THREEBYTE_3A;
668
if (needsModRMForDecode(Form))
669
filter = new ModFilter(isRegFormat(Form));
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filter = new DumbFilter();
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opcodeToSet = Opcode;
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assert(Opcode >= 0xc0 && "Unexpected opcode for an escape opcode");
683
opcodeType = ONEBYTE;
684
if (Form == X86Local::AddRegFrm) {
685
Spec->modifierType = MODIFIER_MODRM;
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Spec->modifierBase = Opcode;
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filter = new AddRegEscapeFilter(Opcode);
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filter = new EscapeFilter(true, Opcode);
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opcodeToSet = 0xd8 + (Prefix - X86Local::D8);
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opcodeType = ONEBYTE;
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#define EXTENSION_TABLE(n) case 0x##n:
697
ONE_BYTE_EXTENSION_TABLES
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#undef EXTENSION_TABLE
701
llvm_unreachable("Fell through the cracks of a single-byte "
703
case X86Local::MRM0r:
704
case X86Local::MRM1r:
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case X86Local::MRM2r:
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case X86Local::MRM3r:
707
case X86Local::MRM4r:
708
case X86Local::MRM5r:
709
case X86Local::MRM6r:
710
case X86Local::MRM7r:
711
filter = new ExtendedFilter(true, Form - X86Local::MRM0r);
713
case X86Local::MRM0m:
714
case X86Local::MRM1m:
715
case X86Local::MRM2m:
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case X86Local::MRM3m:
717
case X86Local::MRM4m:
718
case X86Local::MRM5m:
719
case X86Local::MRM6m:
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case X86Local::MRM7m:
721
filter = new ExtendedFilter(false, Form - X86Local::MRM0m);
734
filter = new EscapeFilter(false, Form - X86Local::MRM0m);
737
if (needsModRMForDecode(Form))
738
filter = new ModFilter(isRegFormat(Form));
740
filter = new DumbFilter();
743
opcodeToSet = Opcode;
746
assert(opcodeType != (OpcodeType)-1 &&
747
"Opcode type not set");
748
assert(filter && "Filter not set");
750
if (Form == X86Local::AddRegFrm) {
751
if(Spec->modifierType != MODIFIER_MODRM) {
752
assert(opcodeToSet < 0xf9 &&
753
"Not enough room for all ADDREG_FRM operands");
755
uint8_t currentOpcode;
757
for (currentOpcode = opcodeToSet;
758
currentOpcode < opcodeToSet + 8;
760
tables.setTableFields(opcodeType,
766
Spec->modifierType = MODIFIER_OPCODE;
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Spec->modifierBase = opcodeToSet;
769
// modifierBase was set where MODIFIER_MODRM was set
770
tables.setTableFields(opcodeType,
777
tables.setTableFields(opcodeType,
783
Spec->modifierType = MODIFIER_NONE;
784
Spec->modifierBase = opcodeToSet;
792
#define TYPE(str, type) if (s == str) return type;
793
OperandType RecognizableInstr::typeFromString(const std::string &s,
796
bool hasOpSizePrefix) {
798
// For SSE instructions, we ignore the OpSize prefix and force operand
800
TYPE("GR16", TYPE_R16)
801
TYPE("GR32", TYPE_R32)
802
TYPE("GR64", TYPE_R64)
805
// For instructions with a REX_W prefix, a declared 32-bit register encoding
807
TYPE("GR32", TYPE_R32)
809
if(!hasOpSizePrefix) {
810
// For instructions without an OpSize prefix, a declared 16-bit register or
811
// immediate encoding is special.
812
TYPE("GR16", TYPE_R16)
813
TYPE("i16imm", TYPE_IMM16)
815
TYPE("i16mem", TYPE_Mv)
816
TYPE("i16imm", TYPE_IMMv)
817
TYPE("i16i8imm", TYPE_IMMv)
818
TYPE("GR16", TYPE_Rv)
819
TYPE("i32mem", TYPE_Mv)
820
TYPE("i32imm", TYPE_IMMv)
821
TYPE("i32i8imm", TYPE_IMM32)
822
TYPE("GR32", TYPE_Rv)
823
TYPE("i64mem", TYPE_Mv)
824
TYPE("i64i32imm", TYPE_IMM64)
825
TYPE("i64i8imm", TYPE_IMM64)
826
TYPE("GR64", TYPE_R64)
827
TYPE("i8mem", TYPE_M8)
828
TYPE("i8imm", TYPE_IMM8)
830
TYPE("VR128", TYPE_XMM128)
831
TYPE("f128mem", TYPE_M128)
832
TYPE("FR64", TYPE_XMM64)
833
TYPE("f64mem", TYPE_M64FP)
834
TYPE("FR32", TYPE_XMM32)
835
TYPE("f32mem", TYPE_M32FP)
837
TYPE("i128mem", TYPE_M128)
838
TYPE("i64i32imm_pcrel", TYPE_REL64)
839
TYPE("i16imm_pcrel", TYPE_REL16)
840
TYPE("i32imm_pcrel", TYPE_REL32)
841
TYPE("SSECC", TYPE_IMM3)
842
TYPE("brtarget", TYPE_RELv)
843
TYPE("brtarget8", TYPE_REL8)
844
TYPE("f80mem", TYPE_M80FP)
845
TYPE("lea32mem", TYPE_LEA)
846
TYPE("lea64_32mem", TYPE_LEA)
847
TYPE("lea64mem", TYPE_LEA)
848
TYPE("VR64", TYPE_MM64)
849
TYPE("i64imm", TYPE_IMMv)
850
TYPE("opaque32mem", TYPE_M1616)
851
TYPE("opaque48mem", TYPE_M1632)
852
TYPE("opaque80mem", TYPE_M1664)
853
TYPE("opaque512mem", TYPE_M512)
854
TYPE("SEGMENT_REG", TYPE_SEGMENTREG)
855
TYPE("DEBUG_REG", TYPE_DEBUGREG)
856
TYPE("CONTROL_REG", TYPE_CONTROLREG)
857
TYPE("offset8", TYPE_MOFFS8)
858
TYPE("offset16", TYPE_MOFFS16)
859
TYPE("offset32", TYPE_MOFFS32)
860
TYPE("offset64", TYPE_MOFFS64)
861
errs() << "Unhandled type string " << s << "\n";
862
llvm_unreachable("Unhandled type string");
866
#define ENCODING(str, encoding) if (s == str) return encoding;
867
OperandEncoding RecognizableInstr::immediateEncodingFromString
868
(const std::string &s,
869
bool hasOpSizePrefix) {
870
if(!hasOpSizePrefix) {
871
// For instructions without an OpSize prefix, a declared 16-bit register or
872
// immediate encoding is special.
873
ENCODING("i16imm", ENCODING_IW)
875
ENCODING("i32i8imm", ENCODING_IB)
876
ENCODING("SSECC", ENCODING_IB)
877
ENCODING("i16imm", ENCODING_Iv)
878
ENCODING("i16i8imm", ENCODING_IB)
879
ENCODING("i32imm", ENCODING_Iv)
880
ENCODING("i64i32imm", ENCODING_ID)
881
ENCODING("i64i8imm", ENCODING_IB)
882
ENCODING("i8imm", ENCODING_IB)
883
errs() << "Unhandled immediate encoding " << s << "\n";
884
llvm_unreachable("Unhandled immediate encoding");
887
OperandEncoding RecognizableInstr::rmRegisterEncodingFromString
888
(const std::string &s,
889
bool hasOpSizePrefix) {
890
ENCODING("GR16", ENCODING_RM)
891
ENCODING("GR32", ENCODING_RM)
892
ENCODING("GR64", ENCODING_RM)
893
ENCODING("GR8", ENCODING_RM)
894
ENCODING("VR128", ENCODING_RM)
895
ENCODING("FR64", ENCODING_RM)
896
ENCODING("FR32", ENCODING_RM)
897
ENCODING("VR64", ENCODING_RM)
898
errs() << "Unhandled R/M register encoding " << s << "\n";
899
llvm_unreachable("Unhandled R/M register encoding");
902
OperandEncoding RecognizableInstr::roRegisterEncodingFromString
903
(const std::string &s,
904
bool hasOpSizePrefix) {
905
ENCODING("GR16", ENCODING_REG)
906
ENCODING("GR32", ENCODING_REG)
907
ENCODING("GR64", ENCODING_REG)
908
ENCODING("GR8", ENCODING_REG)
909
ENCODING("VR128", ENCODING_REG)
910
ENCODING("FR64", ENCODING_REG)
911
ENCODING("FR32", ENCODING_REG)
912
ENCODING("VR64", ENCODING_REG)
913
ENCODING("SEGMENT_REG", ENCODING_REG)
914
ENCODING("DEBUG_REG", ENCODING_REG)
915
ENCODING("CONTROL_REG", ENCODING_REG)
916
errs() << "Unhandled reg/opcode register encoding " << s << "\n";
917
llvm_unreachable("Unhandled reg/opcode register encoding");
920
OperandEncoding RecognizableInstr::memoryEncodingFromString
921
(const std::string &s,
922
bool hasOpSizePrefix) {
923
ENCODING("i16mem", ENCODING_RM)
924
ENCODING("i32mem", ENCODING_RM)
925
ENCODING("i64mem", ENCODING_RM)
926
ENCODING("i8mem", ENCODING_RM)
927
ENCODING("f128mem", ENCODING_RM)
928
ENCODING("f64mem", ENCODING_RM)
929
ENCODING("f32mem", ENCODING_RM)
930
ENCODING("i128mem", ENCODING_RM)
931
ENCODING("f80mem", ENCODING_RM)
932
ENCODING("lea32mem", ENCODING_RM)
933
ENCODING("lea64_32mem", ENCODING_RM)
934
ENCODING("lea64mem", ENCODING_RM)
935
ENCODING("opaque32mem", ENCODING_RM)
936
ENCODING("opaque48mem", ENCODING_RM)
937
ENCODING("opaque80mem", ENCODING_RM)
938
ENCODING("opaque512mem", ENCODING_RM)
939
errs() << "Unhandled memory encoding " << s << "\n";
940
llvm_unreachable("Unhandled memory encoding");
943
OperandEncoding RecognizableInstr::relocationEncodingFromString
944
(const std::string &s,
945
bool hasOpSizePrefix) {
946
if(!hasOpSizePrefix) {
947
// For instructions without an OpSize prefix, a declared 16-bit register or
948
// immediate encoding is special.
949
ENCODING("i16imm", ENCODING_IW)
951
ENCODING("i16imm", ENCODING_Iv)
952
ENCODING("i16i8imm", ENCODING_IB)
953
ENCODING("i32imm", ENCODING_Iv)
954
ENCODING("i32i8imm", ENCODING_IB)
955
ENCODING("i64i32imm", ENCODING_ID)
956
ENCODING("i64i8imm", ENCODING_IB)
957
ENCODING("i8imm", ENCODING_IB)
958
ENCODING("i64i32imm_pcrel", ENCODING_ID)
959
ENCODING("i16imm_pcrel", ENCODING_IW)
960
ENCODING("i32imm_pcrel", ENCODING_ID)
961
ENCODING("brtarget", ENCODING_Iv)
962
ENCODING("brtarget8", ENCODING_IB)
963
ENCODING("i64imm", ENCODING_IO)
964
ENCODING("offset8", ENCODING_Ia)
965
ENCODING("offset16", ENCODING_Ia)
966
ENCODING("offset32", ENCODING_Ia)
967
ENCODING("offset64", ENCODING_Ia)
968
errs() << "Unhandled relocation encoding " << s << "\n";
969
llvm_unreachable("Unhandled relocation encoding");
972
OperandEncoding RecognizableInstr::opcodeModifierEncodingFromString
973
(const std::string &s,
974
bool hasOpSizePrefix) {
975
ENCODING("RST", ENCODING_I)
976
ENCODING("GR32", ENCODING_Rv)
977
ENCODING("GR64", ENCODING_RO)
978
ENCODING("GR16", ENCODING_Rv)
979
ENCODING("GR8", ENCODING_RB)
980
errs() << "Unhandled opcode modifier encoding " << s << "\n";
981
llvm_unreachable("Unhandled opcode modifier encoding");