X86FuncNode* X86Compiler::newFunc(const FuncPrototype& p) {
X86FuncNode* func = newNode<X86FuncNode>();
Error error;
if (func == NULL)
goto _NoMemory;
// Create helper nodes.
func->_entryNode = newLabelNode();
func->_exitNode = newLabelNode();
func->_end = newNode<HLSentinel>();
if (func->_entryNode == NULL || func->_exitNode == NULL || func->_end == NULL)
goto _NoMemory;
// Function prototype.
if ((error = func->_x86Decl.setPrototype(p)) != kErrorOk) {
setLastError(error);
return NULL;
}
// Function arguments stack size. Since function requires _argStackSize to be
// set, we have to copy it from X86FuncDecl.
func->_argStackSize = func->_x86Decl.getArgStackSize();
func->_redZoneSize = static_cast<uint16_t>(func->_x86Decl.getRedZoneSize());
func->_spillZoneSize = static_cast<uint16_t>(func->_x86Decl.getSpillZoneSize());
// Expected/Required stack alignment.
func->_expectedStackAlignment = getRuntime()->getStackAlignment();
func->_requiredStackAlignment = 0;
// Allocate space for function arguments.
func->_args = NULL;
if (func->getNumArgs() != 0) {
func->_args = _zoneAllocator.allocT<VarData*>(func->getNumArgs() * sizeof(VarData*));
if (func->_args == NULL)
goto _NoMemory;
::memset(func->_args, 0, func->getNumArgs() * sizeof(VarData*));
}
return func;
_NoMemory:
setLastError(kErrorNoHeapMemory);
return NULL;
}
uint32_t Compiler::_newLabelId() noexcept {
HLLabel* node = newLabelNode();
if (node == nullptr) {
setLastError(kErrorNoHeapMemory);
return kInvalidValue;
}
return node->getLabelId();
}
