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// 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.
#ifndef RUNTIME_VM_REVERSE_PC_LOOKUP_CACHE_H_
#define RUNTIME_VM_REVERSE_PC_LOOKUP_CACHE_H_
#include "vm/allocation.h"
#include "vm/globals.h"
#include "vm/raw_object.h"
#include "vm/tagged_pointer.h"
namespace dart {
class IsolateGroup;
// This class provides mechanism to find Code and CompressedStackMaps
// objects corresponding to the given PC.
// Can only be used in AOT runtime with bare instructions.
class ReversePc : public AllStatic {
public:
// Looks for Code object corresponding to |pc| in the
// given isolate |group| and vm isolate group.
static CodePtr Lookup(IsolateGroup* group, uword pc, bool is_return_address);
static const UntaggedCompressedStackMaps::Payload* FindStackMap(
IsolateGroup* group,
uword pc,
bool is_return_address,
uword* code_start,
const UntaggedCompressedStackMaps::Payload** global_table);
private:
static const UntaggedCompressedStackMaps::Payload* FindStackMapInGroup(
IsolateGroup* group,
uword pc,
bool is_return_address,
uword* code_start,
const UntaggedCompressedStackMaps::Payload** global_table);
static CodePtr FindCodeInGroup(IsolateGroup* group,
uword pc,
bool is_return_address);
static CodePtr FindCode(IsolateGroup* group,
uword pc,
bool is_return_address);
};
} // namespace dart
#endif // RUNTIME_VM_REVERSE_PC_LOOKUP_CACHE_H_