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|
//===-EDInst.cpp - LLVM Enhanced Disassembler -----------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the Enhanced Disassembly library's instruction class.
// The instruction is responsible for vending the string representation,
// individual tokens, and operands for a single instruction.
//
//===----------------------------------------------------------------------===//
#include "EDDisassembler.h"
#include "EDInst.h"
#include "EDOperand.h"
#include "EDToken.h"
#include "llvm/MC/EDInstInfo.h"
#include "llvm/MC/MCInst.h"
using namespace llvm;
EDInst::EDInst(llvm::MCInst *inst,
uint64_t byteSize,
EDDisassembler &disassembler,
const llvm::EDInstInfo *info) :
Disassembler(disassembler),
Inst(inst),
ThisInstInfo(info),
ByteSize(byteSize),
BranchTarget(-1),
MoveSource(-1),
MoveTarget(-1) {
OperandOrder = ThisInstInfo->operandOrders[Disassembler.llvmSyntaxVariant()];
}
EDInst::~EDInst() {
unsigned int index;
unsigned int numOperands = Operands.size();
for (index = 0; index < numOperands; ++index)
delete Operands[index];
unsigned int numTokens = Tokens.size();
for (index = 0; index < numTokens; ++index)
delete Tokens[index];
delete Inst;
}
uint64_t EDInst::byteSize() {
return ByteSize;
}
int EDInst::stringify() {
if (StringifyResult.valid())
return StringifyResult.result();
if (Disassembler.printInst(String, *Inst))
return StringifyResult.setResult(-1);
return StringifyResult.setResult(0);
}
int EDInst::getString(const char*& str) {
if (stringify())
return -1;
str = String.c_str();
return 0;
}
unsigned EDInst::instID() {
return Inst->getOpcode();
}
bool EDInst::isBranch() {
if (ThisInstInfo)
return ThisInstInfo->instructionType == kInstructionTypeBranch;
else
return false;
}
bool EDInst::isMove() {
if (ThisInstInfo)
return ThisInstInfo->instructionType == kInstructionTypeMove;
else
return false;
}
int EDInst::parseOperands() {
if (ParseResult.valid())
return ParseResult.result();
if (!ThisInstInfo)
return ParseResult.setResult(-1);
unsigned int opIndex;
unsigned int mcOpIndex = 0;
for (opIndex = 0; opIndex < ThisInstInfo->numOperands; ++opIndex) {
if (isBranch() &&
(ThisInstInfo->operandFlags[opIndex] & kOperandFlagTarget)) {
BranchTarget = opIndex;
}
else if (isMove()) {
if (ThisInstInfo->operandFlags[opIndex] & kOperandFlagSource)
MoveSource = opIndex;
else if (ThisInstInfo->operandFlags[opIndex] & kOperandFlagTarget)
MoveTarget = opIndex;
}
EDOperand *operand = new EDOperand(Disassembler, *this, opIndex, mcOpIndex);
Operands.push_back(operand);
}
return ParseResult.setResult(0);
}
int EDInst::branchTargetID() {
if (parseOperands())
return -1;
return BranchTarget;
}
int EDInst::moveSourceID() {
if (parseOperands())
return -1;
return MoveSource;
}
int EDInst::moveTargetID() {
if (parseOperands())
return -1;
return MoveTarget;
}
int EDInst::numOperands() {
if (parseOperands())
return -1;
return Operands.size();
}
int EDInst::getOperand(EDOperand *&operand, unsigned int index) {
if (parseOperands())
return -1;
if (index >= Operands.size())
return -1;
operand = Operands[index];
return 0;
}
int EDInst::tokenize() {
if (TokenizeResult.valid())
return TokenizeResult.result();
if (stringify())
return TokenizeResult.setResult(-1);
return TokenizeResult.setResult(EDToken::tokenize(Tokens,
String,
OperandOrder,
Disassembler));
}
int EDInst::numTokens() {
if (tokenize())
return -1;
return Tokens.size();
}
int EDInst::getToken(EDToken *&token, unsigned int index) {
if (tokenize())
return -1;
token = Tokens[index];
return 0;
}
#ifdef __BLOCKS__
int EDInst::visitTokens(EDTokenVisitor_t visitor) {
if (tokenize())
return -1;
tokvec_t::iterator iter;
for (iter = Tokens.begin(); iter != Tokens.end(); ++iter) {
int ret = visitor(*iter);
if (ret == 1)
return 0;
if (ret != 0)
return -1;
}
return 0;
}
#endif
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