Method RollBackStackFrame_DwFrameDescriptor

IDEHelper/DebugTarget.cpp:1586–1820

}

bool DebugTarget::RollBackStackFrame_DwFrameDescriptor(CPURegisters* registers, addr_target* outReturnAddressLoc)
{
	addr_target pcAddress = (addr_target)registers->GetPC();

	//TODO: Verify we replaced this correctly
	/*auto stackFrameItr = mFrameDescriptorMap.upper_bound(pcAddress);
	if (stackFrameItr != mFrameDescriptorMap.end())
		stackFrameItr--;
	if (stackFrameItr == mFrameDescriptorMap.end())
		return false;*/

	if (mDwFrameDescriptorMap.empty())
		return false;
	auto stackFrameItr = mDwFrameDescriptorMap.upper_bound(pcAddress);
	if (stackFrameItr == mDwFrameDescriptorMap.begin())
		return false;
	stackFrameItr--;

	auto dwFrameDescriptor = &stackFrameItr->second;
	if (pcAddress > dwFrameDescriptor->mHighPC)
		return false;

	struct RegisterRuleData
	{
	public:
		int mRegisterRule;
		int mParamOffset;
		const uint8* mParamData;

	public:
		RegisterRuleData()
		{
			mRegisterRule = DW_CFA_undefined;
			mParamOffset = 0;
			mParamData = NULL;
		}
	};

	struct State
	{
		State* mPrevState;
		RegisterRuleData mRegisterRuleDataArray[CPURegisters::kNumIntRegs];
		int mRegisterRuleDataIdx;
		addr_target mCFA = 0;
		int mCFAOffset = 0;

		State()
		{
			mPrevState = NULL;
			mCFA = 0;
			mCFAOffset = 0;
			mRegisterRuleDataIdx = -1;
		}
	};

	State initialState;
	State rootState;
	rootState.mRegisterRuleDataIdx = DwarfReg_SP;