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247 lines
9.6 KiB
247 lines
9.6 KiB
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ART_COMPILER_UTILS_ARM64_JNI_MACRO_ASSEMBLER_ARM64_H_
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#define ART_COMPILER_UTILS_ARM64_JNI_MACRO_ASSEMBLER_ARM64_H_
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#include <stdint.h>
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#include <memory>
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#include <vector>
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#include <android-base/logging.h>
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#include "assembler_arm64.h"
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#include "base/arena_containers.h"
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#include "base/enums.h"
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#include "base/macros.h"
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#include "offsets.h"
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#include "utils/assembler.h"
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#include "utils/jni_macro_assembler.h"
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// TODO(VIXL): Make VIXL compile with -Wshadow.
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wshadow"
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#include "aarch64/macro-assembler-aarch64.h"
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#pragma GCC diagnostic pop
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namespace art {
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namespace arm64 {
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class Arm64JNIMacroAssembler final : public JNIMacroAssemblerFwd<Arm64Assembler, PointerSize::k64> {
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public:
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explicit Arm64JNIMacroAssembler(ArenaAllocator* allocator)
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: JNIMacroAssemblerFwd(allocator),
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exception_blocks_(allocator->Adapter(kArenaAllocAssembler)) {}
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~Arm64JNIMacroAssembler();
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// Finalize the code.
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void FinalizeCode() override;
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// Emit code that will create an activation on the stack.
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void BuildFrame(size_t frame_size,
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ManagedRegister method_reg,
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ArrayRef<const ManagedRegister> callee_save_regs) override;
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// Emit code that will remove an activation from the stack.
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void RemoveFrame(size_t frame_size,
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ArrayRef<const ManagedRegister> callee_save_regs,
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bool may_suspend) override;
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void IncreaseFrameSize(size_t adjust) override;
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void DecreaseFrameSize(size_t adjust) override;
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// Store routines.
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void Store(FrameOffset offs, ManagedRegister src, size_t size) override;
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void StoreRef(FrameOffset dest, ManagedRegister src) override;
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void StoreRawPtr(FrameOffset dest, ManagedRegister src) override;
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void StoreImmediateToFrame(FrameOffset dest, uint32_t imm) override;
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void StoreStackOffsetToThread(ThreadOffset64 thr_offs, FrameOffset fr_offs) override;
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void StoreStackPointerToThread(ThreadOffset64 thr_offs) override;
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void StoreSpanning(FrameOffset dest, ManagedRegister src, FrameOffset in_off) override;
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// Load routines.
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void Load(ManagedRegister dest, FrameOffset src, size_t size) override;
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void LoadFromThread(ManagedRegister dest, ThreadOffset64 src, size_t size) override;
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void LoadRef(ManagedRegister dest, FrameOffset src) override;
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void LoadRef(ManagedRegister dest,
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ManagedRegister base,
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MemberOffset offs,
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bool unpoison_reference) override;
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void LoadRawPtr(ManagedRegister dest, ManagedRegister base, Offset offs) override;
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void LoadRawPtrFromThread(ManagedRegister dest, ThreadOffset64 offs) override;
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// Copying routines.
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void MoveArguments(ArrayRef<ArgumentLocation> dests, ArrayRef<ArgumentLocation> srcs) override;
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void Move(ManagedRegister dest, ManagedRegister src, size_t size) override;
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void CopyRawPtrFromThread(FrameOffset fr_offs, ThreadOffset64 thr_offs) override;
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void CopyRawPtrToThread(ThreadOffset64 thr_offs, FrameOffset fr_offs, ManagedRegister scratch)
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override;
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void CopyRef(FrameOffset dest, FrameOffset src) override;
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void CopyRef(FrameOffset dest,
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ManagedRegister base,
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MemberOffset offs,
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bool unpoison_reference) override;
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void Copy(FrameOffset dest, FrameOffset src, size_t size) override;
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void Copy(FrameOffset dest,
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ManagedRegister src_base,
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Offset src_offset,
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ManagedRegister scratch,
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size_t size) override;
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void Copy(ManagedRegister dest_base,
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Offset dest_offset,
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FrameOffset src,
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ManagedRegister scratch,
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size_t size) override;
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void Copy(FrameOffset dest,
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FrameOffset src_base,
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Offset src_offset,
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ManagedRegister scratch,
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size_t size) override;
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void Copy(ManagedRegister dest,
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Offset dest_offset,
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ManagedRegister src,
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Offset src_offset,
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ManagedRegister scratch,
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size_t size) override;
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void Copy(FrameOffset dest,
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Offset dest_offset,
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FrameOffset src,
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Offset src_offset,
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ManagedRegister scratch,
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size_t size) override;
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void MemoryBarrier(ManagedRegister scratch) override;
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// Sign extension.
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void SignExtend(ManagedRegister mreg, size_t size) override;
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// Zero extension.
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void ZeroExtend(ManagedRegister mreg, size_t size) override;
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// Exploit fast access in managed code to Thread::Current().
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void GetCurrentThread(ManagedRegister dest) override;
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void GetCurrentThread(FrameOffset dest_offset) override;
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// Set up `out_reg` to hold a `jobject` (`StackReference<Object>*` to a spilled value),
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// or to be null if the value is null and `null_allowed`. `in_reg` holds a possibly
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// stale reference that can be used to avoid loading the spilled value to
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// see if the value is null.
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void CreateJObject(ManagedRegister out_reg,
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FrameOffset spilled_reference_offset,
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ManagedRegister in_reg,
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bool null_allowed) override;
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// Set up `out_off` to hold a `jobject` (`StackReference<Object>*` to a spilled value),
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// or to be null if the value is null and `null_allowed`.
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void CreateJObject(FrameOffset out_off,
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FrameOffset spilled_reference_offset,
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bool null_allowed) override;
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// Heap::VerifyObject on src. In some cases (such as a reference to this) we
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// know that src may not be null.
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void VerifyObject(ManagedRegister src, bool could_be_null) override;
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void VerifyObject(FrameOffset src, bool could_be_null) override;
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// Jump to address held at [base+offset] (used for tail calls).
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void Jump(ManagedRegister base, Offset offset) override;
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// Call to address held at [base+offset].
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void Call(ManagedRegister base, Offset offset) override;
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void Call(FrameOffset base, Offset offset) override;
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void CallFromThread(ThreadOffset64 offset) override;
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// Generate code to check if Thread::Current()->exception_ is non-null
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// and branch to a ExceptionSlowPath if it is.
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void ExceptionPoll(size_t stack_adjust) override;
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// Create a new label that can be used with Jump/Bind calls.
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std::unique_ptr<JNIMacroLabel> CreateLabel() override;
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// Emit an unconditional jump to the label.
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void Jump(JNIMacroLabel* label) override;
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// Emit a conditional jump to the label by applying a unary condition test to the GC marking flag.
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void TestGcMarking(JNIMacroLabel* label, JNIMacroUnaryCondition cond) override;
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// Code at this offset will serve as the target for the Jump call.
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void Bind(JNIMacroLabel* label) override;
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private:
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class Arm64Exception {
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public:
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Arm64Exception(vixl::aarch64::Register scratch, size_t stack_adjust)
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: scratch_(scratch), stack_adjust_(stack_adjust) {}
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vixl::aarch64::Label* Entry() { return &exception_entry_; }
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// Register used for passing Thread::Current()->exception_ .
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const vixl::aarch64::Register scratch_;
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// Stack adjust for ExceptionPool.
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const size_t stack_adjust_;
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vixl::aarch64::Label exception_entry_;
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private:
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DISALLOW_COPY_AND_ASSIGN(Arm64Exception);
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};
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// Emits Exception block.
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void EmitExceptionPoll(Arm64Exception *exception);
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void StoreWToOffset(StoreOperandType type,
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WRegister source,
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XRegister base,
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int32_t offset);
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void StoreToOffset(XRegister source, XRegister base, int32_t offset);
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void StoreSToOffset(SRegister source, XRegister base, int32_t offset);
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void StoreDToOffset(DRegister source, XRegister base, int32_t offset);
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void LoadImmediate(XRegister dest,
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int32_t value,
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vixl::aarch64::Condition cond = vixl::aarch64::al);
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void Load(Arm64ManagedRegister dst, XRegister src, int32_t src_offset, size_t size);
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void LoadWFromOffset(LoadOperandType type,
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WRegister dest,
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XRegister base,
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int32_t offset);
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void LoadFromOffset(XRegister dest, XRegister base, int32_t offset);
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void LoadSFromOffset(SRegister dest, XRegister base, int32_t offset);
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void LoadDFromOffset(DRegister dest, XRegister base, int32_t offset);
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void AddConstant(XRegister rd,
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int32_t value,
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vixl::aarch64::Condition cond = vixl::aarch64::al);
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void AddConstant(XRegister rd,
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XRegister rn,
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int32_t value,
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vixl::aarch64::Condition cond = vixl::aarch64::al);
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// List of exception blocks to generate at the end of the code cache.
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ArenaVector<std::unique_ptr<Arm64Exception>> exception_blocks_;
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};
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class Arm64JNIMacroLabel final
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: public JNIMacroLabelCommon<Arm64JNIMacroLabel,
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vixl::aarch64::Label,
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InstructionSet::kArm64> {
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public:
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vixl::aarch64::Label* AsArm64() {
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return AsPlatformLabel();
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}
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};
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} // namespace arm64
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} // namespace art
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#endif // ART_COMPILER_UTILS_ARM64_JNI_MACRO_ASSEMBLER_ARM64_H_
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