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// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
#ifndef VM_NATIVE_ENTRY_H_
#define VM_NATIVE_ENTRY_H_
#include "platform/memory_sanitizer.h"
#include "vm/allocation.h"
#include "vm/assembler.h"
#include "vm/code_generator.h"
#include "vm/exceptions.h"
#include "vm/native_arguments.h"
#include "vm/verifier.h"
#include "include/dart_api.h"
namespace dart {
// Forward declarations.
class Class;
class String;
typedef void (*NativeFunction)(NativeArguments* arguments);
#define NATIVE_ENTRY_FUNCTION(name) BootstrapNatives::DN_##name
#ifdef DEBUG
#define SET_NATIVE_RETVAL(args, value) \
RawObject* retval = value; \
ASSERT(retval->IsDartInstance()); \
arguments->SetReturnUnsafe(retval);
#else
#define SET_NATIVE_RETVAL(arguments, value) \
arguments->SetReturnUnsafe(value);
#endif
#define DEFINE_NATIVE_ENTRY(name, argument_count) \
static RawObject* DN_Helper##name(Isolate* isolate, \
Thread* thread, \
Zone* zone, \
NativeArguments* arguments); \
void NATIVE_ENTRY_FUNCTION(name)(Dart_NativeArguments args) { \
CHECK_STACK_ALIGNMENT; \
VERIFY_ON_TRANSITION; \
NativeArguments* arguments = reinterpret_cast<NativeArguments*>(args); \
/* Tell MemorySanitizer 'arguments' is initialized by generated code. */ \
MSAN_UNPOISON(arguments, sizeof(*arguments)); \
ASSERT(arguments->NativeArgCount() == argument_count); \
TRACE_NATIVE_CALL("%s", ""#name); \
{ \
Thread* thread = arguments->thread(); \
ASSERT(thread == Thread::Current()); \
Isolate* isolate = thread->isolate(); \
StackZone zone(thread); \
SET_NATIVE_RETVAL(arguments, \
DN_Helper##name(isolate, \
thread, \
zone.GetZone(), \
arguments)); \
DEOPTIMIZE_ALOT; \
} \
VERIFY_ON_TRANSITION; \
} \
static RawObject* DN_Helper##name(Isolate* isolate, \
Thread* thread, \
Zone* zone, \
NativeArguments* arguments)
// Natives should throw an exception if an illegal argument or null is passed.
// type name = value.
#define GET_NON_NULL_NATIVE_ARGUMENT(type, name, value) \
const Instance& __##name##_instance__ = \
Instance::CheckedHandle(zone, value); \
if (!__##name##_instance__.Is##type()) { \
const Array& __args__ = Array::Handle(Array::New(1)); \
__args__.SetAt(0, __##name##_instance__); \
Exceptions::ThrowByType(Exceptions::kArgument, __args__); \
} \
const type& name = type::Cast(__##name##_instance__);
// Natives should throw an exception if an illegal argument is passed.
// type name = value.
#define GET_NATIVE_ARGUMENT(type, name, value) \
const Instance& __##name##_instance__ = \
Instance::CheckedHandle(zone, value); \
type& name = type::Handle(zone); \
if (!__##name##_instance__.IsNull()) { \
if (!__##name##_instance__.Is##type()) { \
const Array& __args__ = Array::Handle(Array::New(1)); \
__args__.SetAt(0, __##name##_instance__); \
Exceptions::ThrowByType(Exceptions::kArgument, __args__); \
} \
} \
name ^= value;
// Helper class for resolving and handling native functions.
class NativeEntry : public AllStatic {
public:
static const intptr_t kNumArguments = 1;
static const intptr_t kNumCallWrapperArguments = 2;
// Resolve specified dart native function to the actual native entrypoint.
static NativeFunction ResolveNative(const Library& library,
const String& function_name,
int number_of_arguments,
bool* auto_setup_scope);
static const uint8_t* ResolveSymbolInLibrary(const Library& library,
uword pc);
static const uint8_t* ResolveSymbol(uword pc);
static uword NativeCallWrapperEntry();
static void NativeCallWrapper(Dart_NativeArguments args,
Dart_NativeFunction func);
static uword LinkNativeCallEntry();
static void LinkNativeCall(Dart_NativeArguments args);
};
} // namespace dart
#endif // VM_NATIVE_ENTRY_H_