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5c3a245f3c
tokenization to crash and burn. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129051 91177308-0d34-0410-b5e6-96231b3b80d8
213 lines
4.7 KiB
C++
213 lines
4.7 KiB
C++
//===-EDInst.cpp - LLVM Enhanced Disassembler -----------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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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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//===----------------------------------------------------------------------===//
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//
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// This file implements the Enhanced Disassembly library's instruction class.
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// The instruction is responsible for vending the string representation,
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// individual tokens, and operands for a single instruction.
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//
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//===----------------------------------------------------------------------===//
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#include "EDInst.h"
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#include "EDDisassembler.h"
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#include "EDOperand.h"
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#include "EDToken.h"
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#include "llvm/MC/EDInstInfo.h"
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#include "llvm/MC/MCInst.h"
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using namespace llvm;
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EDInst::EDInst(llvm::MCInst *inst,
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uint64_t byteSize,
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EDDisassembler &disassembler,
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const llvm::EDInstInfo *info) :
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Disassembler(disassembler),
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Inst(inst),
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ThisInstInfo(info),
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ByteSize(byteSize),
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BranchTarget(-1),
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MoveSource(-1),
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MoveTarget(-1) {
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OperandOrder = ThisInstInfo->operandOrders[Disassembler.llvmSyntaxVariant()];
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}
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EDInst::~EDInst() {
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unsigned int index;
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unsigned int numOperands = Operands.size();
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for (index = 0; index < numOperands; ++index)
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delete Operands[index];
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unsigned int numTokens = Tokens.size();
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for (index = 0; index < numTokens; ++index)
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delete Tokens[index];
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delete Inst;
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}
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uint64_t EDInst::byteSize() {
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return ByteSize;
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}
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int EDInst::stringify() {
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if (StringifyResult.valid())
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return StringifyResult.result();
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if (Disassembler.printInst(String, *Inst))
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return StringifyResult.setResult(-1);
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String.push_back('\n');
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return StringifyResult.setResult(0);
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}
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int EDInst::getString(const char*& str) {
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if (stringify())
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return -1;
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str = String.c_str();
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return 0;
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}
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unsigned EDInst::instID() {
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return Inst->getOpcode();
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}
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bool EDInst::isBranch() {
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if (ThisInstInfo)
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return
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ThisInstInfo->instructionType == kInstructionTypeBranch ||
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ThisInstInfo->instructionType == kInstructionTypeCall;
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else
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return false;
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}
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bool EDInst::isMove() {
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if (ThisInstInfo)
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return ThisInstInfo->instructionType == kInstructionTypeMove;
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else
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return false;
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}
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int EDInst::parseOperands() {
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if (ParseResult.valid())
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return ParseResult.result();
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if (!ThisInstInfo)
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return ParseResult.setResult(-1);
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unsigned int opIndex;
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unsigned int mcOpIndex = 0;
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for (opIndex = 0; opIndex < ThisInstInfo->numOperands; ++opIndex) {
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if (isBranch() &&
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(ThisInstInfo->operandFlags[opIndex] & kOperandFlagTarget)) {
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BranchTarget = opIndex;
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}
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else if (isMove()) {
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if (ThisInstInfo->operandFlags[opIndex] & kOperandFlagSource)
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MoveSource = opIndex;
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else if (ThisInstInfo->operandFlags[opIndex] & kOperandFlagTarget)
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MoveTarget = opIndex;
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}
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EDOperand *operand = new EDOperand(Disassembler, *this, opIndex, mcOpIndex);
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Operands.push_back(operand);
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}
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return ParseResult.setResult(0);
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}
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int EDInst::branchTargetID() {
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if (parseOperands())
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return -1;
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return BranchTarget;
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}
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int EDInst::moveSourceID() {
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if (parseOperands())
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return -1;
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return MoveSource;
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}
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int EDInst::moveTargetID() {
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if (parseOperands())
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return -1;
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return MoveTarget;
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}
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int EDInst::numOperands() {
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if (parseOperands())
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return -1;
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return Operands.size();
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}
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int EDInst::getOperand(EDOperand *&operand, unsigned int index) {
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if (parseOperands())
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return -1;
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if (index >= Operands.size())
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return -1;
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operand = Operands[index];
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return 0;
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}
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int EDInst::tokenize() {
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if (TokenizeResult.valid())
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return TokenizeResult.result();
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if (ThisInstInfo == NULL)
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return TokenizeResult.setResult(-1);
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if (stringify())
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return TokenizeResult.setResult(-1);
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return TokenizeResult.setResult(EDToken::tokenize(Tokens,
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String,
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OperandOrder,
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Disassembler));
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}
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int EDInst::numTokens() {
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if (tokenize())
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return -1;
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return Tokens.size();
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}
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int EDInst::getToken(EDToken *&token, unsigned int index) {
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if (tokenize())
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return -1;
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token = Tokens[index];
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return 0;
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}
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#ifdef __BLOCKS__
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int EDInst::visitTokens(EDTokenVisitor_t visitor) {
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if (tokenize())
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return -1;
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tokvec_t::iterator iter;
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for (iter = Tokens.begin(); iter != Tokens.end(); ++iter) {
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int ret = visitor(*iter);
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if (ret == 1)
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return 0;
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if (ret != 0)
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return -1;
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}
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return 0;
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}
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#endif
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