Method newFunc

libraries/asmjit/asmjit/base/codecompiler.cpp:105–150

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

CCFunc* CodeCompiler::newFunc(const FuncSignature& sign) noexcept {
  Error err;

  CCFunc* func = newNodeT<CCFunc>();
  if (!func) goto _NoMemory;

  err = registerLabelNode(func);
  if (ASMJIT_UNLIKELY(err)) {
    // TODO: Calls setLastError, maybe rethink noexcept?
    setLastError(err);
    return nullptr;
  }

  // Create helper nodes.
  func->_exitNode = newLabelNode();
  func->_end = newNodeT<CBSentinel>();

  if (!func->_exitNode || !func->_end)
    goto _NoMemory;

  // Function prototype.
  err = func->getDetail().init(sign);
  if (err != kErrorOk) {
    setLastError(err);
    return nullptr;
  }

  // If the CodeInfo guarantees higher alignment honor it.
  if (_codeInfo.getStackAlignment() > func->_funcDetail._callConv.getNaturalStackAlignment())
    func->_funcDetail._callConv.setNaturalStackAlignment(_codeInfo.getStackAlignment());

  // Allocate space for function arguments.
  func->_args = nullptr;
  if (func->getArgCount() != 0) {
    func->_args = _cbHeap.allocT<VirtReg*>(func->getArgCount() * sizeof(VirtReg*));
    if (!func->_args) goto _NoMemory;

    ::memset(func->_args, 0, func->getArgCount() * sizeof(VirtReg*));
  }

  return func;

_NoMemory:
  setLastError(DebugUtils::errored(kErrorNoHeapMemory));
  return nullptr;
}

CCFunc* CodeCompiler::addFunc(CCFunc* func) {
  ASMJIT_ASSERT(_func == nullptr);