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Started with some simulation to determine 'step into' symbol lookup

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This commit is contained in:
Brian Fiete 2020-03-21 13:09:19 -07:00
parent 9413d3ded4
commit 6412a27f97
6 changed files with 118 additions and 20 deletions
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13
IDEHelper/Compiler/BfSystem.cpp
View file

@ -2993,14 +2993,17 @@ BfTypeDef* BfSystem::GetCombinedPartial(BfTypeDef* typeDef)
if ((!typeDef->mIsPartial) || (typeDef->mIsCombinedPartial))
return typeDef;
auto itr = mTypeDefs.TryGet(typeDef->mFullName);
bool foundPartial = false;
BfTypeDef* checkTypeDef = typeDef;
auto itr = mTypeDefs.TryGet(checkTypeDef->mFullName);
do
{
BF_ASSERT(typeDef->mIsPartial);
typeDef = *itr;
if (checkTypeDef == typeDef)
foundPartial = true;
checkTypeDef = *itr;
itr.MoveToNextHashMatch();
} while (!typeDef->mIsCombinedPartial);
return typeDef;
} while ((!checkTypeDef->mIsCombinedPartial) || (!foundPartial));
return checkTypeDef;
}
BfTypeDef* BfSystem::GetOuterTypeNonPartial(BfTypeDef* typeDef)

4
IDEHelper/WinDebugger.cpp
View file

@ -11710,6 +11710,7 @@ String WinDebugger::FindLineCallAddresses(intptr inAddress)
if (!mDebugTarget->DecodeInstruction(addr, &inst))
break;
*registers.GetPCRegisterRef() = addr;
if (inst.IsCall())
{
bool addSymbol = true;
@ -11718,7 +11719,7 @@ String WinDebugger::FindLineCallAddresses(intptr inAddress)
callAddresses += "-";
callAddresses += EncodeDataPtr(addr, false);
addr_target targetAddr = inst.GetTarget(&registers);
addr_target targetAddr = inst.GetTarget(this, &registers);
if (targetAddr != 0)
{
String outSymbol;
@ -11784,6 +11785,7 @@ String WinDebugger::FindLineCallAddresses(intptr inAddress)
callAddresses += "\n";
}
inst.PartialSimulate(this, &registers);
addr += inst.GetLength();
}
};

96
IDEHelper/X64.cpp
View file

@ -520,10 +520,14 @@ bool X64Instr::GetIndexRegisterAndOffset(int* outRegister, int* outOffset)
if ((form == llvm::X86II::MRMDestMem) || (form == llvm::X86II::MRMSrcMem) ||
((form >= llvm::X86II::MRM0m) && (form <= llvm::X86II::MRM7m)))
{
auto baseReg = mMCInst.getOperand(llvm::X86::AddrBaseReg);
auto scaleAmt = mMCInst.getOperand(llvm::X86::AddrScaleAmt);
auto indexReg = mMCInst.getOperand(llvm::X86::AddrIndexReg);
auto addrDisp = mMCInst.getOperand(llvm::X86::AddrDisp);
int regOffset = 0;
if (form == llvm::X86II::MRMSrcMem)
regOffset = 1;
auto baseReg = mMCInst.getOperand(regOffset + llvm::X86::AddrBaseReg);
auto scaleAmt = mMCInst.getOperand(regOffset + llvm::X86::AddrScaleAmt);
auto indexReg = mMCInst.getOperand(regOffset + llvm::X86::AddrIndexReg);
auto addrDisp = mMCInst.getOperand(regOffset + llvm::X86::AddrDisp);
/*bool a = baseReg.isReg();
bool b = scaleAmt.isImm();
@ -695,20 +699,36 @@ void X64Instr::MarkRegsUsed(Array<RegForm>& regsUsed, bool overrideForm)
}
}
uint64 X64Instr::GetTarget(X64CPURegisters* registers)
uint64 X64Instr::GetTarget(Debugger* debugger, X64CPURegisters* registers)
{
const MCInstrDesc &instDesc = mX64->mInstrInfo->get(mMCInst.getOpcode());
if (mMCInst.getNumOperands() < 1)
return 0;
/*if ((debugger != NULL) && (registers != NULL))
{
int regNum = 0;
int offset = 0;
if (GetIndexRegisterAndOffset(&regNum, &offset))
{
uint64 addr = registers->mIntRegsArray[regNum] + offset;
uint64 val = 0;
debugger->ReadMemory(addr, 8, &val);
return val;
}
}*/
int opIdx = 0;
auto operand = mMCInst.getOperand(0);
if (mMCInst.getNumOperands() > 4)
{
if ((instDesc.OpInfo[0].OperandType == MCOI::OPERAND_REGISTER) && (instDesc.OpInfo[4].OperandType == MCOI::OPERAND_MEMORY))
{
opIdx = 4;
operand = mMCInst.getOperand(opIdx);
}
}
if (operand.isImm())
{
@ -720,6 +740,72 @@ uint64 X64Instr::GetTarget(X64CPURegisters* registers)
return 0;
}
bool X64Instr::PartialSimulate(Debugger* debugger, X64CPURegisters* registers)
{
// const MCInstrDesc &instDesc = mX64->mInstrInfo->get(mMCInst.getOpcode());
//
// for (int i = 0; i < instDesc.NumOperands; i++)
// {
// auto regInfo = mMCInst.getOperand(i);
// NOP;
// }
//
// if (instDesc.getOpcode() == X86::MOV64rm)
// {
// auto form = (instDesc.TSFlags & llvm::X86II::FormMask);
//
// if ((form == llvm::X86II::MRMSrcMem) && (instDesc.NumOperands == 6))
// {
// auto destReg = mMCInst.getOperand(llvm::X86::AddrBaseReg);
// if (destReg.isReg())
// {
// int regNum = 0;
// int offset = 0;
// if (GetIndexRegisterAndOffset(&regNum, &offset))
// {
// uint64 addr = registers->mIntRegsArray[regNum] + offset;
// uint64 val = 0;
// debugger->ReadMemory(addr, 8, &val);
//
// switch (destReg.getReg())
// {
//
// }
// }
// }
// }
//
//// if ((form == llvm::X86II::MRMDestMem) || (form == llvm::X86II::MRMSrcMem) ||
//// ((form >= llvm::X86II::MRM0m) && (form <= llvm::X86II::MRM7m)))
//// {
//// }
// }
//
// if (instDesc.getOpcode() == X86::XOR8rr)
// {
// if (instDesc.NumOperands == 3)
// {
// auto destReg = mMCInst.getOperand(0);
// auto srcReg = mMCInst.getOperand(1);
//
// if ((destReg.isReg()) && (srcReg.isReg()))
// {
// if (destReg.getReg() == srcReg.getReg())
// {
// switch (destReg.getReg())
// {
// case X86::AL:
// ((uint8*)&registers->mIntRegs.rax)[0] = 0;
// break;
// }
// }
// }
// }
// }
return false;
}
X64CPU::X64CPU() :
mWarningStream(mWarningString),
mCommentStream(mCommentString)

3
IDEHelper/X64.h
View file

@ -466,7 +466,8 @@ public:
int GetJmpState(int flags);
void MarkRegsUsed(Array<RegForm>& regsUsed, bool overrideForm);
uint64 GetTarget(X64CPURegisters* registers = NULL);
uint64 GetTarget(Debugger* debugger = NULL, X64CPURegisters* registers = NULL);
bool PartialSimulate(Debugger* debugger, X64CPURegisters* registers);
};

7
IDEHelper/X86.cpp
View file

@ -374,7 +374,7 @@ void X86Instr::MarkRegsUsed(Array<RegForm>& regsUsed, bool overrideForm)
}
}
uint32 X86Instr::GetTarget(X86CPURegisters* registers)
uint32 X86Instr::GetTarget(Debugger* debugger, X86CPURegisters* registers)
{
const MCInstrDesc &instDesc = mX86->mInstrInfo->get(mMCInst.getOpcode());
@ -402,6 +402,11 @@ uint32 X86Instr::GetTarget(X86CPURegisters* registers)
return 0;
}
bool X86Instr::PartialSimulate(Debugger* debugger, X86CPURegisters* registers)
{
return false;
}
X86CPU::X86CPU() :
mWarningStream(mWarningString),
mCommentStream(mCommentString)

3
IDEHelper/X86.h
View file

@ -303,7 +303,8 @@ public:
int GetJmpState(int flags);
void MarkRegsUsed(Array<RegForm>& regsUsed, bool overrideForm);
uint32 GetTarget(X86CPURegisters* registers = NULL);
uint32 GetTarget(Debugger* debugger = NULL, X86CPURegisters* registers = NULL);
bool PartialSimulate(Debugger* debugger, X86CPURegisters* registers);
};
class X86CPU