You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
168 lines
5.8 KiB
168 lines
5.8 KiB
/*
|
|
* Copyright (C) 2011 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifndef ART_COMPILER_COMPILED_METHOD_H_
|
|
#define ART_COMPILER_COMPILED_METHOD_H_
|
|
|
|
#include <memory>
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
#include "arch/instruction_set.h"
|
|
#include "base/bit_field.h"
|
|
#include "base/bit_utils.h"
|
|
|
|
namespace art {
|
|
|
|
template <typename T> class ArrayRef;
|
|
class CompiledMethodStorage;
|
|
template<typename T> class LengthPrefixedArray;
|
|
|
|
namespace linker {
|
|
class LinkerPatch;
|
|
} // namespace linker
|
|
|
|
class CompiledCode {
|
|
public:
|
|
// For Quick to supply an code blob
|
|
CompiledCode(CompiledMethodStorage* storage,
|
|
InstructionSet instruction_set,
|
|
const ArrayRef<const uint8_t>& quick_code);
|
|
|
|
virtual ~CompiledCode();
|
|
|
|
InstructionSet GetInstructionSet() const {
|
|
return GetPackedField<InstructionSetField>();
|
|
}
|
|
|
|
ArrayRef<const uint8_t> GetQuickCode() const;
|
|
|
|
bool operator==(const CompiledCode& rhs) const;
|
|
|
|
// To align an offset from a page-aligned value to make it suitable
|
|
// for code storage. For example on ARM, to ensure that PC relative
|
|
// valu computations work out as expected.
|
|
size_t AlignCode(size_t offset) const;
|
|
static size_t AlignCode(size_t offset, InstructionSet instruction_set);
|
|
|
|
// returns the difference between the code address and a usable PC.
|
|
// mainly to cope with kThumb2 where the lower bit must be set.
|
|
size_t CodeDelta() const;
|
|
static size_t CodeDelta(InstructionSet instruction_set);
|
|
|
|
// Returns a pointer suitable for invoking the code at the argument
|
|
// code_pointer address. Mainly to cope with kThumb2 where the
|
|
// lower bit must be set to indicate Thumb mode.
|
|
static const void* CodePointer(const void* code_pointer, InstructionSet instruction_set);
|
|
|
|
protected:
|
|
static constexpr size_t kInstructionSetFieldSize =
|
|
MinimumBitsToStore(static_cast<size_t>(InstructionSet::kLast));
|
|
static constexpr size_t kNumberOfCompiledCodePackedBits = kInstructionSetFieldSize;
|
|
static constexpr size_t kMaxNumberOfPackedBits = sizeof(uint32_t) * kBitsPerByte;
|
|
|
|
template <typename T>
|
|
static ArrayRef<const T> GetArray(const LengthPrefixedArray<T>* array);
|
|
|
|
CompiledMethodStorage* GetStorage() {
|
|
return storage_;
|
|
}
|
|
|
|
template <typename BitFieldType>
|
|
typename BitFieldType::value_type GetPackedField() const {
|
|
return BitFieldType::Decode(packed_fields_);
|
|
}
|
|
|
|
template <typename BitFieldType>
|
|
void SetPackedField(typename BitFieldType::value_type value) {
|
|
DCHECK(IsUint<BitFieldType::size>(static_cast<uintptr_t>(value)));
|
|
packed_fields_ = BitFieldType::Update(value, packed_fields_);
|
|
}
|
|
|
|
private:
|
|
using InstructionSetField = BitField<InstructionSet, 0u, kInstructionSetFieldSize>;
|
|
|
|
CompiledMethodStorage* const storage_;
|
|
|
|
// Used to store the compiled code.
|
|
const LengthPrefixedArray<uint8_t>* const quick_code_;
|
|
|
|
uint32_t packed_fields_;
|
|
};
|
|
|
|
class CompiledMethod final : public CompiledCode {
|
|
public:
|
|
// Constructs a CompiledMethod.
|
|
// Note: Consider using the static allocation methods below that will allocate the CompiledMethod
|
|
// in the swap space.
|
|
CompiledMethod(CompiledMethodStorage* storage,
|
|
InstructionSet instruction_set,
|
|
const ArrayRef<const uint8_t>& quick_code,
|
|
const ArrayRef<const uint8_t>& vmap_table,
|
|
const ArrayRef<const uint8_t>& cfi_info,
|
|
const ArrayRef<const linker::LinkerPatch>& patches);
|
|
|
|
virtual ~CompiledMethod();
|
|
|
|
static CompiledMethod* SwapAllocCompiledMethod(
|
|
CompiledMethodStorage* storage,
|
|
InstructionSet instruction_set,
|
|
const ArrayRef<const uint8_t>& quick_code,
|
|
const ArrayRef<const uint8_t>& vmap_table,
|
|
const ArrayRef<const uint8_t>& cfi_info,
|
|
const ArrayRef<const linker::LinkerPatch>& patches);
|
|
|
|
static void ReleaseSwapAllocatedCompiledMethod(CompiledMethodStorage* storage, CompiledMethod* m);
|
|
|
|
bool IsIntrinsic() const {
|
|
return GetPackedField<IsIntrinsicField>();
|
|
}
|
|
|
|
// Marks the compiled method as being generated using an intrinsic codegen.
|
|
// Such methods have no relationships to their code items.
|
|
// This affects debug information generated at link time.
|
|
void MarkAsIntrinsic() {
|
|
DCHECK(!IsIntrinsic());
|
|
SetPackedField<IsIntrinsicField>(/* value= */ true);
|
|
}
|
|
|
|
ArrayRef<const uint8_t> GetVmapTable() const;
|
|
|
|
ArrayRef<const uint8_t> GetCFIInfo() const;
|
|
|
|
ArrayRef<const linker::LinkerPatch> GetPatches() const;
|
|
|
|
private:
|
|
static constexpr size_t kIsIntrinsicLsb = kNumberOfCompiledCodePackedBits;
|
|
static constexpr size_t kIsIntrinsicSize = 1u;
|
|
static constexpr size_t kNumberOfCompiledMethodPackedBits = kIsIntrinsicLsb + kIsIntrinsicSize;
|
|
static_assert(kNumberOfCompiledMethodPackedBits <= CompiledCode::kMaxNumberOfPackedBits,
|
|
"Too many packed fields.");
|
|
|
|
using IsIntrinsicField = BitField<bool, kIsIntrinsicLsb, kIsIntrinsicSize>;
|
|
|
|
// For quick code, holds code infos which contain stack maps, inline information, and etc.
|
|
const LengthPrefixedArray<uint8_t>* const vmap_table_;
|
|
// For quick code, a FDE entry for the debug_frame section.
|
|
const LengthPrefixedArray<uint8_t>* const cfi_info_;
|
|
// For quick code, linker patches needed by the method.
|
|
const LengthPrefixedArray<linker::LinkerPatch>* const patches_;
|
|
};
|
|
|
|
} // namespace art
|
|
|
|
#endif // ART_COMPILER_COMPILED_METHOD_H_
|