Function VMFillParams

source/common/scripting/vm/vmexec.cpp:197–235

//===========================================================================

void VMFillParams(VMValue *params, VMFrame *callee, int numparam)
{
	unsigned int regd, regf, regs, rega;
	VMScriptFunction *calleefunc = static_cast<VMScriptFunction *>(callee->Func);
	const VMRegisters calleereg(callee);

	assert(calleefunc != NULL && !(calleefunc->VarFlags & VARF_Native));
	assert(numparam == calleefunc->NumArgs);
	assert(REGT_INT == 0 && REGT_FLOAT == 1 && REGT_STRING == 2 && REGT_POINTER == 3);

	regd = regf = regs = rega = 0;
	const uint8_t *reginfo = calleefunc->RegTypes;
	assert(reginfo != nullptr);
	for (int i = 0; i < calleefunc->NumArgs; ++i, reginfo++)
	{
		// copy all parameters to the local registers.
		VMValue &p = params[i];
		if (*reginfo < REGT_STRING)
		{
			if (*reginfo == REGT_INT)
			{
				calleereg.d[regd++] = p.i;
			}
			else // p.Type == REGT_FLOAT
			{
				calleereg.f[regf++] = p.f;
			}
		}
		else if (*reginfo == REGT_STRING)
		{
			calleereg.s[regs++] = p.s();
		}
		else
		{
			assert(*reginfo == REGT_POINTER);
			calleereg.a[rega++] = p.a;
		}
	}
}


#ifndef NDEBUG