blob: a8a3608c21b2b9cbe28d584ce669fc098f8331ea [file] [log] [blame]
// Copyright (c) 2018, 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.
#include "vm/globals.h"
#include "vm/instructions.h"
#include "vm/instructions_kbc.h"
#include "vm/constants_kbc.h"
#include "vm/native_entry.h"
namespace dart {
RawTypedData* KBCNativeCallPattern::GetNativeEntryDataAt(
uword pc,
const Bytecode& bytecode) {
const KBCInstr* return_addr = reinterpret_cast<const KBCInstr*>(pc);
const KBCInstr* instr =
reinterpret_cast<const KBCInstr*>(bytecode.PayloadStart());
ASSERT(instr < return_addr);
while (!KernelBytecode::IsNativeCallOpcode(instr)) {
instr = KernelBytecode::Next(instr);
if (instr >= return_addr) {
"Unable to find NativeCall bytecode instruction"
" corresponding to PC %" Px,
intptr_t native_entry_data_pool_index = KernelBytecode::DecodeD(instr);
const ObjectPool& obj_pool = ObjectPool::Handle(bytecode.object_pool());
TypedData& native_entry_data = TypedData::Handle();
native_entry_data ^= obj_pool.ObjectAt(native_entry_data_pool_index);
// Native calls to recognized functions should never be patched.
ASSERT(NativeEntryData(native_entry_data).kind() ==
return native_entry_data.raw();
} // namespace dart
#endif // !defined(DART_PRECOMPILED_RUNTIME)