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/*
* Copyright (C) 2023 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_OPTIMIZING_JIT_PATCHES_ARM64_H_
#define ART_COMPILER_OPTIMIZING_JIT_PATCHES_ARM64_H_
#include "base/arena_allocator.h"
#include "base/arena_containers.h"
#include "dex/dex_file.h"
#include "dex/proto_reference.h"
#include "dex/string_reference.h"
#include "dex/type_reference.h"
#include "handle.h"
#include "mirror/class.h"
#include "mirror/method_type.h"
#include "mirror/string.h"
#include "utils/arm64/assembler_arm64.h"
// TODO(VIXL): Make VIXL compile cleanly with -Wshadow, -Wdeprecated-declarations.
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wshadow"
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
#include "aarch64/disasm-aarch64.h"
#include "aarch64/macro-assembler-aarch64.h"
#pragma GCC diagnostic pop
namespace art HIDDEN {
class CodeGenerationData;
namespace arm64 {
/**
* Helper for emitting string or class literals into JIT generated code,
* which can be shared between different compilers.
*/
class JitPatchesARM64 {
public:
JitPatchesARM64(Arm64Assembler* assembler, ArenaAllocator* allocator) :
assembler_(assembler),
uint32_literals_(std::less<uint32_t>(),
allocator->Adapter(kArenaAllocCodeGenerator)),
uint64_literals_(std::less<uint64_t>(),
allocator->Adapter(kArenaAllocCodeGenerator)),
jit_string_patches_(StringReferenceValueComparator(),
allocator->Adapter(kArenaAllocCodeGenerator)),
jit_class_patches_(TypeReferenceValueComparator(),
allocator->Adapter(kArenaAllocCodeGenerator)),
jit_method_type_patches_(ProtoReferenceValueComparator(),
allocator->Adapter(kArenaAllocCodeGenerator)) {
}
using Uint64ToLiteralMap = ArenaSafeMap<uint64_t, vixl::aarch64::Literal<uint64_t>*>;
using Uint32ToLiteralMap = ArenaSafeMap<uint32_t, vixl::aarch64::Literal<uint32_t>*>;
using StringToLiteralMap = ArenaSafeMap<StringReference,
vixl::aarch64::Literal<uint32_t>*,
StringReferenceValueComparator>;
using TypeToLiteralMap = ArenaSafeMap<TypeReference,
vixl::aarch64::Literal<uint32_t>*,
TypeReferenceValueComparator>;
using ProtoToLiteralMap = ArenaSafeMap<ProtoReference,
vixl::aarch64::Literal<uint32_t>*,
ProtoReferenceValueComparator>;
vixl::aarch64::Literal<uint32_t>* DeduplicateUint32Literal(uint32_t value);
vixl::aarch64::Literal<uint64_t>* DeduplicateUint64Literal(uint64_t value);
vixl::aarch64::Literal<uint32_t>* DeduplicateBootImageAddressLiteral(uint64_t address);
vixl::aarch64::Literal<uint32_t>* DeduplicateJitStringLiteral(
const DexFile& dex_file,
dex::StringIndex string_index,
Handle<mirror::String> handle,
CodeGenerationData* code_generation_data);
vixl::aarch64::Literal<uint32_t>* DeduplicateJitClassLiteral(
const DexFile& dex_file,
dex::TypeIndex type_index,
Handle<mirror::Class> handle,
CodeGenerationData* code_generation_data);
vixl::aarch64::Literal<uint32_t>* DeduplicateJitMethodTypeLiteral(
const DexFile& dex_file,
dex::ProtoIndex proto_index,
Handle<mirror::MethodType> handle,
CodeGenerationData* code_generation_data);
void EmitJitRootPatches(uint8_t* code,
const uint8_t* roots_data,
const CodeGenerationData& code_generation_data) const;
Arm64Assembler* GetAssembler() const { return assembler_; }
vixl::aarch64::MacroAssembler* GetVIXLAssembler() { return GetAssembler()->GetVIXLAssembler(); }
private:
Arm64Assembler* assembler_;
// Deduplication map for 32-bit literals, used for JIT for boot image addresses.
Uint32ToLiteralMap uint32_literals_;
// Deduplication map for 64-bit literals, used for JIT for method address or method code.
Uint64ToLiteralMap uint64_literals_;
// Patches for string literals in JIT compiled code.
StringToLiteralMap jit_string_patches_;
// Patches for class literals in JIT compiled code.
TypeToLiteralMap jit_class_patches_;
// Patches for MethodType literals in JIT compiled code.
ProtoToLiteralMap jit_method_type_patches_;
};
} // namespace arm64
} // namespace art
#endif // ART_COMPILER_OPTIMIZING_JIT_PATCHES_ARM64_H_
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