Method DoFrameObjPass

IDEHelper/Backend/BeMCContext.cpp:8528–8753

}

void BeMCContext::DoFrameObjPass()
{
	BF_ASSERT(mBlocks.size() == 1);

	SetCurrentInst(NULL);

	// MS x64 ABI requires a "home address" of 4 intptrs when we call a function, plus whatever
	//  we need for calls with more than 4 params.
	// If we're doing UseBP, we have to allocate these at call time
	int homeSize = BF_ALIGN(BF_MAX(mMaxCallParamCount, 4) * 8, 16);

	if (mMaxCallParamCount == -1)
		homeSize = 0;

	mStackSize = 0;

	if (mUseBP)
		mUsedRegs.Add(X64Reg_RBP);

	int regStackOffset = 0;
	int xmmRegStackSize = 0;
	for (auto usedReg : mUsedRegs)
	{
		if (!IsVolatileReg(usedReg))
		{
			BF_ASSERT(usedReg != X64Reg_RSP);
			if (IsXMMReg(usedReg))
				xmmRegStackSize += 16;
			else
				regStackOffset += 8;
		}
	}

	int xmmStackOffset = -1;
	if (xmmRegStackSize > 0)
	{
		int align = 16;
		int alignOffset = regStackOffset + 8;
		int alignedPosition = (mStackSize + alignOffset + (align - 1)) & ~(align - 1);
		mStackSize = alignedPosition - alignOffset;
		mStackSize += xmmRegStackSize;
		xmmStackOffset = -mStackSize - regStackOffset;
	}

	for (int vregIdx = 0; vregIdx < (int)mVRegInfo.size(); vregIdx++)
	{
		auto vregInfo = mVRegInfo[vregIdx];

		if (vregInfo->mRelOffset.mKind == BeMCOperandKind_Immediate_HomeSize)
		{
			vregInfo->mRelOffset = BeMCOperand::FromImmediate(homeSize);
		}

		if ((vregInfo->mIsRetVal) && (vregIdx != mCompositeRetVRegIdx))
			continue;

		if ((vregInfo->mRefCount > 0) && (!vregInfo->mIsExpr) && (vregInfo->mReg == X64Reg_None) && (vregInfo->mFrameOffset == INT_MIN))
		{