979 lines
41 KiB
C++
979 lines
41 KiB
C++
/*
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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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/*
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* Mterp entry point and support functions.
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*/
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#include "interpreter/interpreter_common.h"
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#include "interpreter/interpreter_intrinsics.h"
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#include "entrypoints/entrypoint_utils-inl.h"
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#include "mterp.h"
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#include "debugger.h"
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namespace art {
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namespace interpreter {
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/*
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* Verify some constants used by the mterp interpreter.
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*/
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void CheckMterpAsmConstants() {
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/*
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* If we're using computed goto instruction transitions, make sure
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* none of the handlers overflows the 128-byte limit. This won't tell
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* which one did, but if any one is too big the total size will
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* overflow.
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*/
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const int width = 128;
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int interp_size = (uintptr_t) artMterpAsmInstructionEnd -
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(uintptr_t) artMterpAsmInstructionStart;
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if ((interp_size == 0) || (interp_size != (art::kNumPackedOpcodes * width))) {
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LOG(FATAL) << "ERROR: unexpected asm interp size " << interp_size
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<< "(did an instruction handler exceed " << width << " bytes?)";
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}
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}
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void InitMterpTls(Thread* self) {
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self->SetMterpDefaultIBase(artMterpAsmInstructionStart);
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self->SetMterpAltIBase(artMterpAsmAltInstructionStart);
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self->SetMterpCurrentIBase((kTraceExecutionEnabled || kTestExportPC) ?
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artMterpAsmAltInstructionStart :
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artMterpAsmInstructionStart);
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}
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/*
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* Find the matching case. Returns the offset to the handler instructions.
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*
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* Returns 3 if we don't find a match (it's the size of the sparse-switch
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* instruction).
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*/
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extern "C" ssize_t MterpDoSparseSwitch(const uint16_t* switchData, int32_t testVal) {
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const int kInstrLen = 3;
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uint16_t size;
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const int32_t* keys;
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const int32_t* entries;
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/*
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* Sparse switch data format:
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* ushort ident = 0x0200 magic value
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* ushort size number of entries in the table; > 0
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* int keys[size] keys, sorted low-to-high; 32-bit aligned
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* int targets[size] branch targets, relative to switch opcode
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*
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* Total size is (2+size*4) 16-bit code units.
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*/
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uint16_t signature = *switchData++;
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DCHECK_EQ(signature, static_cast<uint16_t>(art::Instruction::kSparseSwitchSignature));
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size = *switchData++;
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/* The keys are guaranteed to be aligned on a 32-bit boundary;
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* we can treat them as a native int array.
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*/
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keys = reinterpret_cast<const int32_t*>(switchData);
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/* The entries are guaranteed to be aligned on a 32-bit boundary;
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* we can treat them as a native int array.
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*/
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entries = keys + size;
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/*
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* Binary-search through the array of keys, which are guaranteed to
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* be sorted low-to-high.
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*/
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int lo = 0;
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int hi = size - 1;
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while (lo <= hi) {
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int mid = (lo + hi) >> 1;
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int32_t foundVal = keys[mid];
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if (testVal < foundVal) {
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hi = mid - 1;
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} else if (testVal > foundVal) {
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lo = mid + 1;
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} else {
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return entries[mid];
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}
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}
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return kInstrLen;
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}
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extern "C" ssize_t MterpDoPackedSwitch(const uint16_t* switchData, int32_t testVal) {
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const int kInstrLen = 3;
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/*
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* Packed switch data format:
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* ushort ident = 0x0100 magic value
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* ushort size number of entries in the table
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* int first_key first (and lowest) switch case value
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* int targets[size] branch targets, relative to switch opcode
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*
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* Total size is (4+size*2) 16-bit code units.
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*/
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uint16_t signature = *switchData++;
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DCHECK_EQ(signature, static_cast<uint16_t>(art::Instruction::kPackedSwitchSignature));
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uint16_t size = *switchData++;
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int32_t firstKey = *switchData++;
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firstKey |= (*switchData++) << 16;
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int index = testVal - firstKey;
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if (index < 0 || index >= size) {
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return kInstrLen;
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}
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/*
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* The entries are guaranteed to be aligned on a 32-bit boundary;
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* we can treat them as a native int array.
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*/
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const int32_t* entries = reinterpret_cast<const int32_t*>(switchData);
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return entries[index];
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}
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extern "C" size_t MterpShouldSwitchInterpreters()
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REQUIRES_SHARED(Locks::mutator_lock_) {
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const instrumentation::Instrumentation* const instrumentation =
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Runtime::Current()->GetInstrumentation();
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return instrumentation->NonJitProfilingActive() || Dbg::IsDebuggerActive();
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}
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extern "C" size_t MterpInvokeVirtual(Thread* self,
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ShadowFrame* shadow_frame,
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uint16_t* dex_pc_ptr,
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uint16_t inst_data)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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JValue* result_register = shadow_frame->GetResultRegister();
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const Instruction* inst = Instruction::At(dex_pc_ptr);
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return DoFastInvoke<kVirtual>(
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self, *shadow_frame, inst, inst_data, result_register);
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}
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extern "C" size_t MterpInvokeSuper(Thread* self,
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ShadowFrame* shadow_frame,
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uint16_t* dex_pc_ptr,
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uint16_t inst_data)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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JValue* result_register = shadow_frame->GetResultRegister();
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const Instruction* inst = Instruction::At(dex_pc_ptr);
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return DoInvoke<kSuper, false, false>(
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self, *shadow_frame, inst, inst_data, result_register);
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}
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extern "C" size_t MterpInvokeInterface(Thread* self,
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ShadowFrame* shadow_frame,
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uint16_t* dex_pc_ptr,
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uint16_t inst_data)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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JValue* result_register = shadow_frame->GetResultRegister();
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const Instruction* inst = Instruction::At(dex_pc_ptr);
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return DoInvoke<kInterface, false, false>(
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self, *shadow_frame, inst, inst_data, result_register);
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}
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extern "C" size_t MterpInvokeDirect(Thread* self,
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ShadowFrame* shadow_frame,
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uint16_t* dex_pc_ptr,
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uint16_t inst_data)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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JValue* result_register = shadow_frame->GetResultRegister();
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const Instruction* inst = Instruction::At(dex_pc_ptr);
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return DoFastInvoke<kDirect>(
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self, *shadow_frame, inst, inst_data, result_register);
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}
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extern "C" size_t MterpInvokeStatic(Thread* self,
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ShadowFrame* shadow_frame,
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uint16_t* dex_pc_ptr,
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uint16_t inst_data)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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JValue* result_register = shadow_frame->GetResultRegister();
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const Instruction* inst = Instruction::At(dex_pc_ptr);
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return DoFastInvoke<kStatic>(
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self, *shadow_frame, inst, inst_data, result_register);
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}
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extern "C" size_t MterpInvokeVirtualRange(Thread* self,
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ShadowFrame* shadow_frame,
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uint16_t* dex_pc_ptr,
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uint16_t inst_data)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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JValue* result_register = shadow_frame->GetResultRegister();
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const Instruction* inst = Instruction::At(dex_pc_ptr);
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return DoInvoke<kVirtual, true, false>(
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self, *shadow_frame, inst, inst_data, result_register);
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}
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extern "C" size_t MterpInvokeSuperRange(Thread* self,
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ShadowFrame* shadow_frame,
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uint16_t* dex_pc_ptr,
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uint16_t inst_data)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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JValue* result_register = shadow_frame->GetResultRegister();
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const Instruction* inst = Instruction::At(dex_pc_ptr);
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return DoInvoke<kSuper, true, false>(
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self, *shadow_frame, inst, inst_data, result_register);
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}
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extern "C" size_t MterpInvokeInterfaceRange(Thread* self,
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ShadowFrame* shadow_frame,
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uint16_t* dex_pc_ptr,
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uint16_t inst_data)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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JValue* result_register = shadow_frame->GetResultRegister();
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const Instruction* inst = Instruction::At(dex_pc_ptr);
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return DoInvoke<kInterface, true, false>(
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self, *shadow_frame, inst, inst_data, result_register);
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}
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extern "C" size_t MterpInvokeDirectRange(Thread* self,
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ShadowFrame* shadow_frame,
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uint16_t* dex_pc_ptr,
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uint16_t inst_data)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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JValue* result_register = shadow_frame->GetResultRegister();
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const Instruction* inst = Instruction::At(dex_pc_ptr);
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return DoInvoke<kDirect, true, false>(
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self, *shadow_frame, inst, inst_data, result_register);
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}
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extern "C" size_t MterpInvokeStaticRange(Thread* self,
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ShadowFrame* shadow_frame,
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uint16_t* dex_pc_ptr,
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uint16_t inst_data)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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JValue* result_register = shadow_frame->GetResultRegister();
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const Instruction* inst = Instruction::At(dex_pc_ptr);
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return DoInvoke<kStatic, true, false>(
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self, *shadow_frame, inst, inst_data, result_register);
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}
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extern "C" size_t MterpInvokeVirtualQuick(Thread* self,
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ShadowFrame* shadow_frame,
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uint16_t* dex_pc_ptr,
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uint16_t inst_data)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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JValue* result_register = shadow_frame->GetResultRegister();
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const Instruction* inst = Instruction::At(dex_pc_ptr);
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const uint32_t vregC = inst->VRegC_35c();
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const uint32_t vtable_idx = inst->VRegB_35c();
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ObjPtr<mirror::Object> const receiver = shadow_frame->GetVRegReference(vregC);
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if (receiver != nullptr) {
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ArtMethod* const called_method = receiver->GetClass()->GetEmbeddedVTableEntry(
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vtable_idx, kRuntimePointerSize);
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if ((called_method != nullptr) && called_method->IsIntrinsic()) {
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if (MterpHandleIntrinsic(shadow_frame, called_method, inst, inst_data, result_register)) {
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jit::Jit* jit = Runtime::Current()->GetJit();
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if (jit != nullptr) {
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jit->InvokeVirtualOrInterface(
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receiver, shadow_frame->GetMethod(), shadow_frame->GetDexPC(), called_method);
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jit->AddSamples(self, shadow_frame->GetMethod(), 1, /*with_backedges*/false);
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}
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return !self->IsExceptionPending();
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}
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}
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}
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return DoInvokeVirtualQuick<false>(
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self, *shadow_frame, inst, inst_data, result_register);
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}
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extern "C" size_t MterpInvokeVirtualQuickRange(Thread* self,
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ShadowFrame* shadow_frame,
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uint16_t* dex_pc_ptr,
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uint16_t inst_data)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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JValue* result_register = shadow_frame->GetResultRegister();
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const Instruction* inst = Instruction::At(dex_pc_ptr);
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return DoInvokeVirtualQuick<true>(
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self, *shadow_frame, inst, inst_data, result_register);
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}
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extern "C" void MterpThreadFenceForConstructor() {
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QuasiAtomic::ThreadFenceForConstructor();
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}
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extern "C" size_t MterpConstString(uint32_t index,
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uint32_t tgt_vreg,
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ShadowFrame* shadow_frame,
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Thread* self)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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ObjPtr<mirror::String> s = ResolveString(self, *shadow_frame, dex::StringIndex(index));
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if (UNLIKELY(s == nullptr)) {
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return true;
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}
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shadow_frame->SetVRegReference(tgt_vreg, s.Ptr());
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return false;
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}
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extern "C" size_t MterpConstClass(uint32_t index,
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uint32_t tgt_vreg,
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ShadowFrame* shadow_frame,
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Thread* self)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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mirror::Class* c = ResolveVerifyAndClinit(dex::TypeIndex(index),
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shadow_frame->GetMethod(),
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self,
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false,
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false);
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if (UNLIKELY(c == nullptr)) {
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return true;
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}
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shadow_frame->SetVRegReference(tgt_vreg, c);
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return false;
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}
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extern "C" size_t MterpCheckCast(uint32_t index,
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StackReference<mirror::Object>* vreg_addr,
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art::ArtMethod* method,
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Thread* self)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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ObjPtr<mirror::Class> c = ResolveVerifyAndClinit(dex::TypeIndex(index),
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method,
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self,
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false,
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false);
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if (UNLIKELY(c == nullptr)) {
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return true;
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}
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// Must load obj from vreg following ResolveVerifyAndClinit due to moving gc.
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mirror::Object* obj = vreg_addr->AsMirrorPtr();
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if (UNLIKELY(obj != nullptr && !obj->InstanceOf(c))) {
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ThrowClassCastException(c, obj->GetClass());
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return true;
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}
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return false;
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}
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extern "C" size_t MterpInstanceOf(uint32_t index,
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StackReference<mirror::Object>* vreg_addr,
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art::ArtMethod* method,
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Thread* self)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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ObjPtr<mirror::Class> c = ResolveVerifyAndClinit(dex::TypeIndex(index),
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method,
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self,
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false,
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false);
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if (UNLIKELY(c == nullptr)) {
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return false; // Caller will check for pending exception. Return value unimportant.
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}
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// Must load obj from vreg following ResolveVerifyAndClinit due to moving gc.
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mirror::Object* obj = vreg_addr->AsMirrorPtr();
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return (obj != nullptr) && obj->InstanceOf(c);
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}
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extern "C" size_t MterpFillArrayData(mirror::Object* obj, const Instruction::ArrayDataPayload* payload)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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return FillArrayData(obj, payload);
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}
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extern "C" size_t MterpNewInstance(ShadowFrame* shadow_frame, Thread* self, uint32_t inst_data)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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const Instruction* inst = Instruction::At(shadow_frame->GetDexPCPtr());
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mirror::Object* obj = nullptr;
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mirror::Class* c = ResolveVerifyAndClinit(dex::TypeIndex(inst->VRegB_21c()),
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shadow_frame->GetMethod(),
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self,
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false,
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false);
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if (LIKELY(c != nullptr)) {
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if (UNLIKELY(c->IsStringClass())) {
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gc::AllocatorType allocator_type = Runtime::Current()->GetHeap()->GetCurrentAllocator();
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obj = mirror::String::AllocEmptyString<true>(self, allocator_type);
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} else {
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obj = AllocObjectFromCode<true>(c,
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self,
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Runtime::Current()->GetHeap()->GetCurrentAllocator());
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}
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}
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if (UNLIKELY(obj == nullptr)) {
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return false;
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}
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obj->GetClass()->AssertInitializedOrInitializingInThread(self);
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shadow_frame->SetVRegReference(inst->VRegA_21c(inst_data), obj);
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return true;
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}
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extern "C" size_t MterpSputObject(ShadowFrame* shadow_frame, uint16_t* dex_pc_ptr,
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uint32_t inst_data, Thread* self)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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const Instruction* inst = Instruction::At(dex_pc_ptr);
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return DoFieldPut<StaticObjectWrite, Primitive::kPrimNot, false, false>
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(self, *shadow_frame, inst, inst_data);
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}
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extern "C" size_t MterpIputObject(ShadowFrame* shadow_frame,
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uint16_t* dex_pc_ptr,
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uint32_t inst_data,
|
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Thread* self)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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const Instruction* inst = Instruction::At(dex_pc_ptr);
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return DoFieldPut<InstanceObjectWrite, Primitive::kPrimNot, false, false>
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(self, *shadow_frame, inst, inst_data);
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}
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extern "C" size_t MterpIputObjectQuick(ShadowFrame* shadow_frame,
|
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uint16_t* dex_pc_ptr,
|
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uint32_t inst_data)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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const Instruction* inst = Instruction::At(dex_pc_ptr);
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return DoIPutQuick<Primitive::kPrimNot, false>(*shadow_frame, inst, inst_data);
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}
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extern "C" size_t MterpAputObject(ShadowFrame* shadow_frame,
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uint16_t* dex_pc_ptr,
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uint32_t inst_data)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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const Instruction* inst = Instruction::At(dex_pc_ptr);
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mirror::Object* a = shadow_frame->GetVRegReference(inst->VRegB_23x());
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if (UNLIKELY(a == nullptr)) {
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return false;
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}
|
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int32_t index = shadow_frame->GetVReg(inst->VRegC_23x());
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mirror::Object* val = shadow_frame->GetVRegReference(inst->VRegA_23x(inst_data));
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mirror::ObjectArray<mirror::Object>* array = a->AsObjectArray<mirror::Object>();
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if (array->CheckIsValidIndex(index) && array->CheckAssignable(val)) {
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array->SetWithoutChecks<false>(index, val);
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return true;
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}
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return false;
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}
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|
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extern "C" size_t MterpFilledNewArray(ShadowFrame* shadow_frame,
|
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uint16_t* dex_pc_ptr,
|
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Thread* self)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
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const Instruction* inst = Instruction::At(dex_pc_ptr);
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return DoFilledNewArray<false, false, false>(inst, *shadow_frame, self,
|
|
shadow_frame->GetResultRegister());
|
|
}
|
|
|
|
extern "C" size_t MterpFilledNewArrayRange(ShadowFrame* shadow_frame,
|
|
uint16_t* dex_pc_ptr,
|
|
Thread* self)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
const Instruction* inst = Instruction::At(dex_pc_ptr);
|
|
return DoFilledNewArray<true, false, false>(inst, *shadow_frame, self,
|
|
shadow_frame->GetResultRegister());
|
|
}
|
|
|
|
extern "C" size_t MterpNewArray(ShadowFrame* shadow_frame,
|
|
uint16_t* dex_pc_ptr,
|
|
uint32_t inst_data, Thread* self)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
const Instruction* inst = Instruction::At(dex_pc_ptr);
|
|
int32_t length = shadow_frame->GetVReg(inst->VRegB_22c(inst_data));
|
|
mirror::Object* obj = AllocArrayFromCode<false, true>(
|
|
dex::TypeIndex(inst->VRegC_22c()), length, shadow_frame->GetMethod(), self,
|
|
Runtime::Current()->GetHeap()->GetCurrentAllocator());
|
|
if (UNLIKELY(obj == nullptr)) {
|
|
return false;
|
|
}
|
|
shadow_frame->SetVRegReference(inst->VRegA_22c(inst_data), obj);
|
|
return true;
|
|
}
|
|
|
|
extern "C" size_t MterpHandleException(Thread* self, ShadowFrame* shadow_frame)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
DCHECK(self->IsExceptionPending());
|
|
const instrumentation::Instrumentation* const instrumentation =
|
|
Runtime::Current()->GetInstrumentation();
|
|
uint32_t found_dex_pc = FindNextInstructionFollowingException(self, *shadow_frame,
|
|
shadow_frame->GetDexPC(),
|
|
instrumentation);
|
|
if (found_dex_pc == DexFile::kDexNoIndex) {
|
|
return false;
|
|
}
|
|
// OK - we can deal with it. Update and continue.
|
|
shadow_frame->SetDexPC(found_dex_pc);
|
|
return true;
|
|
}
|
|
|
|
extern "C" void MterpCheckBefore(Thread* self, ShadowFrame* shadow_frame, uint16_t* dex_pc_ptr)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
const Instruction* inst = Instruction::At(dex_pc_ptr);
|
|
uint16_t inst_data = inst->Fetch16(0);
|
|
if (inst->Opcode(inst_data) == Instruction::MOVE_EXCEPTION) {
|
|
self->AssertPendingException();
|
|
} else {
|
|
self->AssertNoPendingException();
|
|
}
|
|
if (kTraceExecutionEnabled) {
|
|
uint32_t dex_pc = dex_pc_ptr - shadow_frame->GetCodeItem()->insns_;
|
|
TraceExecution(*shadow_frame, inst, dex_pc);
|
|
}
|
|
if (kTestExportPC) {
|
|
// Save invalid dex pc to force segfault if improperly used.
|
|
shadow_frame->SetDexPCPtr(reinterpret_cast<uint16_t*>(kExportPCPoison));
|
|
}
|
|
}
|
|
|
|
extern "C" void MterpLogDivideByZeroException(Thread* self, ShadowFrame* shadow_frame)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
UNUSED(self);
|
|
const Instruction* inst = Instruction::At(shadow_frame->GetDexPCPtr());
|
|
uint16_t inst_data = inst->Fetch16(0);
|
|
LOG(INFO) << "DivideByZero: " << inst->Opcode(inst_data);
|
|
}
|
|
|
|
extern "C" void MterpLogArrayIndexException(Thread* self, ShadowFrame* shadow_frame)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
UNUSED(self);
|
|
const Instruction* inst = Instruction::At(shadow_frame->GetDexPCPtr());
|
|
uint16_t inst_data = inst->Fetch16(0);
|
|
LOG(INFO) << "ArrayIndex: " << inst->Opcode(inst_data);
|
|
}
|
|
|
|
extern "C" void MterpLogNegativeArraySizeException(Thread* self, ShadowFrame* shadow_frame)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
UNUSED(self);
|
|
const Instruction* inst = Instruction::At(shadow_frame->GetDexPCPtr());
|
|
uint16_t inst_data = inst->Fetch16(0);
|
|
LOG(INFO) << "NegativeArraySize: " << inst->Opcode(inst_data);
|
|
}
|
|
|
|
extern "C" void MterpLogNoSuchMethodException(Thread* self, ShadowFrame* shadow_frame)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
UNUSED(self);
|
|
const Instruction* inst = Instruction::At(shadow_frame->GetDexPCPtr());
|
|
uint16_t inst_data = inst->Fetch16(0);
|
|
LOG(INFO) << "NoSuchMethod: " << inst->Opcode(inst_data);
|
|
}
|
|
|
|
extern "C" void MterpLogExceptionThrownException(Thread* self, ShadowFrame* shadow_frame)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
UNUSED(self);
|
|
const Instruction* inst = Instruction::At(shadow_frame->GetDexPCPtr());
|
|
uint16_t inst_data = inst->Fetch16(0);
|
|
LOG(INFO) << "ExceptionThrown: " << inst->Opcode(inst_data);
|
|
}
|
|
|
|
extern "C" void MterpLogNullObjectException(Thread* self, ShadowFrame* shadow_frame)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
UNUSED(self);
|
|
const Instruction* inst = Instruction::At(shadow_frame->GetDexPCPtr());
|
|
uint16_t inst_data = inst->Fetch16(0);
|
|
LOG(INFO) << "NullObject: " << inst->Opcode(inst_data);
|
|
}
|
|
|
|
extern "C" void MterpLogFallback(Thread* self, ShadowFrame* shadow_frame)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
UNUSED(self);
|
|
const Instruction* inst = Instruction::At(shadow_frame->GetDexPCPtr());
|
|
uint16_t inst_data = inst->Fetch16(0);
|
|
LOG(INFO) << "Fallback: " << inst->Opcode(inst_data) << ", Suspend Pending?: "
|
|
<< self->IsExceptionPending();
|
|
}
|
|
|
|
extern "C" void MterpLogOSR(Thread* self, ShadowFrame* shadow_frame, int32_t offset)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
UNUSED(self);
|
|
const Instruction* inst = Instruction::At(shadow_frame->GetDexPCPtr());
|
|
uint16_t inst_data = inst->Fetch16(0);
|
|
LOG(INFO) << "OSR: " << inst->Opcode(inst_data) << ", offset = " << offset;
|
|
}
|
|
|
|
extern "C" void MterpLogSuspendFallback(Thread* self, ShadowFrame* shadow_frame, uint32_t flags)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
UNUSED(self);
|
|
const Instruction* inst = Instruction::At(shadow_frame->GetDexPCPtr());
|
|
uint16_t inst_data = inst->Fetch16(0);
|
|
if (flags & kCheckpointRequest) {
|
|
LOG(INFO) << "Checkpoint fallback: " << inst->Opcode(inst_data);
|
|
} else if (flags & kSuspendRequest) {
|
|
LOG(INFO) << "Suspend fallback: " << inst->Opcode(inst_data);
|
|
} else if (flags & kEmptyCheckpointRequest) {
|
|
LOG(INFO) << "Empty checkpoint fallback: " << inst->Opcode(inst_data);
|
|
}
|
|
}
|
|
|
|
extern "C" size_t MterpSuspendCheck(Thread* self)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
self->AllowThreadSuspension();
|
|
return MterpShouldSwitchInterpreters();
|
|
}
|
|
|
|
extern "C" ssize_t artSet8InstanceFromMterp(uint32_t field_idx,
|
|
mirror::Object* obj,
|
|
uint8_t new_value,
|
|
ArtMethod* referrer)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
ArtField* field = FindFieldFast(field_idx, referrer, InstancePrimitiveWrite, sizeof(int8_t));
|
|
if (LIKELY(field != nullptr && obj != nullptr)) {
|
|
Primitive::Type type = field->GetTypeAsPrimitiveType();
|
|
if (type == Primitive::kPrimBoolean) {
|
|
field->SetBoolean<false>(obj, new_value);
|
|
} else {
|
|
DCHECK_EQ(Primitive::kPrimByte, type);
|
|
field->SetByte<false>(obj, new_value);
|
|
}
|
|
return 0; // success
|
|
}
|
|
return -1; // failure
|
|
}
|
|
|
|
extern "C" ssize_t artSet16InstanceFromMterp(uint32_t field_idx,
|
|
mirror::Object* obj,
|
|
uint16_t new_value,
|
|
ArtMethod* referrer)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
ArtField* field = FindFieldFast(field_idx, referrer, InstancePrimitiveWrite,
|
|
sizeof(int16_t));
|
|
if (LIKELY(field != nullptr && obj != nullptr)) {
|
|
Primitive::Type type = field->GetTypeAsPrimitiveType();
|
|
if (type == Primitive::kPrimChar) {
|
|
field->SetChar<false>(obj, new_value);
|
|
} else {
|
|
DCHECK_EQ(Primitive::kPrimShort, type);
|
|
field->SetShort<false>(obj, new_value);
|
|
}
|
|
return 0; // success
|
|
}
|
|
return -1; // failure
|
|
}
|
|
|
|
extern "C" ssize_t artSet32InstanceFromMterp(uint32_t field_idx,
|
|
mirror::Object* obj,
|
|
uint32_t new_value,
|
|
ArtMethod* referrer)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
ArtField* field = FindFieldFast(field_idx, referrer, InstancePrimitiveWrite,
|
|
sizeof(int32_t));
|
|
if (LIKELY(field != nullptr && obj != nullptr)) {
|
|
field->Set32<false>(obj, new_value);
|
|
return 0; // success
|
|
}
|
|
return -1; // failure
|
|
}
|
|
|
|
extern "C" ssize_t artSet64InstanceFromMterp(uint32_t field_idx,
|
|
mirror::Object* obj,
|
|
uint64_t* new_value,
|
|
ArtMethod* referrer)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
ArtField* field = FindFieldFast(field_idx, referrer, InstancePrimitiveWrite,
|
|
sizeof(int64_t));
|
|
if (LIKELY(field != nullptr && obj != nullptr)) {
|
|
field->Set64<false>(obj, *new_value);
|
|
return 0; // success
|
|
}
|
|
return -1; // failure
|
|
}
|
|
|
|
extern "C" ssize_t artSetObjInstanceFromMterp(uint32_t field_idx,
|
|
mirror::Object* obj,
|
|
mirror::Object* new_value,
|
|
ArtMethod* referrer)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
ArtField* field = FindFieldFast(field_idx, referrer, InstanceObjectWrite,
|
|
sizeof(mirror::HeapReference<mirror::Object>));
|
|
if (LIKELY(field != nullptr && obj != nullptr)) {
|
|
field->SetObj<false>(obj, new_value);
|
|
return 0; // success
|
|
}
|
|
return -1; // failure
|
|
}
|
|
|
|
template <typename return_type, Primitive::Type primitive_type>
|
|
ALWAYS_INLINE return_type MterpGetStatic(uint32_t field_idx,
|
|
ArtMethod* referrer,
|
|
Thread* self,
|
|
return_type (ArtField::*func)(ObjPtr<mirror::Object>))
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
return_type res = 0; // On exception, the result will be ignored.
|
|
ArtField* f =
|
|
FindFieldFromCode<StaticPrimitiveRead, false>(field_idx,
|
|
referrer,
|
|
self,
|
|
primitive_type);
|
|
if (LIKELY(f != nullptr)) {
|
|
ObjPtr<mirror::Object> obj = f->GetDeclaringClass();
|
|
res = (f->*func)(obj);
|
|
}
|
|
return res;
|
|
}
|
|
|
|
extern "C" int32_t MterpGetBooleanStatic(uint32_t field_idx,
|
|
ArtMethod* referrer,
|
|
Thread* self)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
return MterpGetStatic<uint8_t, Primitive::kPrimBoolean>(field_idx,
|
|
referrer,
|
|
self,
|
|
&ArtField::GetBoolean);
|
|
}
|
|
|
|
extern "C" int32_t MterpGetByteStatic(uint32_t field_idx,
|
|
ArtMethod* referrer,
|
|
Thread* self)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
return MterpGetStatic<int8_t, Primitive::kPrimByte>(field_idx,
|
|
referrer,
|
|
self,
|
|
&ArtField::GetByte);
|
|
}
|
|
|
|
extern "C" uint32_t MterpGetCharStatic(uint32_t field_idx,
|
|
ArtMethod* referrer,
|
|
Thread* self)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
return MterpGetStatic<uint16_t, Primitive::kPrimChar>(field_idx,
|
|
referrer,
|
|
self,
|
|
&ArtField::GetChar);
|
|
}
|
|
|
|
extern "C" int32_t MterpGetShortStatic(uint32_t field_idx,
|
|
ArtMethod* referrer,
|
|
Thread* self)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
return MterpGetStatic<int16_t, Primitive::kPrimShort>(field_idx,
|
|
referrer,
|
|
self,
|
|
&ArtField::GetShort);
|
|
}
|
|
|
|
extern "C" mirror::Object* MterpGetObjStatic(uint32_t field_idx,
|
|
ArtMethod* referrer,
|
|
Thread* self)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
return MterpGetStatic<ObjPtr<mirror::Object>, Primitive::kPrimNot>(field_idx,
|
|
referrer,
|
|
self,
|
|
&ArtField::GetObject).Ptr();
|
|
}
|
|
|
|
extern "C" int32_t MterpGet32Static(uint32_t field_idx,
|
|
ArtMethod* referrer,
|
|
Thread* self)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
return MterpGetStatic<int32_t, Primitive::kPrimInt>(field_idx,
|
|
referrer,
|
|
self,
|
|
&ArtField::GetInt);
|
|
}
|
|
|
|
extern "C" int64_t MterpGet64Static(uint32_t field_idx, ArtMethod* referrer, Thread* self)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
return MterpGetStatic<int64_t, Primitive::kPrimLong>(field_idx,
|
|
referrer,
|
|
self,
|
|
&ArtField::GetLong);
|
|
}
|
|
|
|
|
|
template <typename field_type, Primitive::Type primitive_type>
|
|
int MterpSetStatic(uint32_t field_idx,
|
|
field_type new_value,
|
|
ArtMethod* referrer,
|
|
Thread* self,
|
|
void (ArtField::*func)(ObjPtr<mirror::Object>, field_type val))
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
int res = 0; // Assume success (following quick_field_entrypoints conventions)
|
|
ArtField* f =
|
|
FindFieldFromCode<StaticPrimitiveWrite, false>(field_idx, referrer, self, primitive_type);
|
|
if (LIKELY(f != nullptr)) {
|
|
ObjPtr<mirror::Object> obj = f->GetDeclaringClass();
|
|
(f->*func)(obj, new_value);
|
|
} else {
|
|
res = -1; // Failure
|
|
}
|
|
return res;
|
|
}
|
|
|
|
extern "C" int MterpSetBooleanStatic(uint32_t field_idx,
|
|
uint8_t new_value,
|
|
ArtMethod* referrer,
|
|
Thread* self)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
return MterpSetStatic<uint8_t, Primitive::kPrimBoolean>(field_idx,
|
|
new_value,
|
|
referrer,
|
|
self,
|
|
&ArtField::SetBoolean<false>);
|
|
}
|
|
|
|
extern "C" int MterpSetByteStatic(uint32_t field_idx,
|
|
int8_t new_value,
|
|
ArtMethod* referrer,
|
|
Thread* self)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
return MterpSetStatic<int8_t, Primitive::kPrimByte>(field_idx,
|
|
new_value,
|
|
referrer,
|
|
self,
|
|
&ArtField::SetByte<false>);
|
|
}
|
|
|
|
extern "C" int MterpSetCharStatic(uint32_t field_idx,
|
|
uint16_t new_value,
|
|
ArtMethod* referrer,
|
|
Thread* self)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
return MterpSetStatic<uint16_t, Primitive::kPrimChar>(field_idx,
|
|
new_value,
|
|
referrer,
|
|
self,
|
|
&ArtField::SetChar<false>);
|
|
}
|
|
|
|
extern "C" int MterpSetShortStatic(uint32_t field_idx,
|
|
int16_t new_value,
|
|
ArtMethod* referrer,
|
|
Thread* self)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
return MterpSetStatic<int16_t, Primitive::kPrimShort>(field_idx,
|
|
new_value,
|
|
referrer,
|
|
self,
|
|
&ArtField::SetShort<false>);
|
|
}
|
|
|
|
extern "C" int MterpSet32Static(uint32_t field_idx,
|
|
int32_t new_value,
|
|
ArtMethod* referrer,
|
|
Thread* self)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
return MterpSetStatic<int32_t, Primitive::kPrimInt>(field_idx,
|
|
new_value,
|
|
referrer,
|
|
self,
|
|
&ArtField::SetInt<false>);
|
|
}
|
|
|
|
extern "C" int MterpSet64Static(uint32_t field_idx,
|
|
int64_t* new_value,
|
|
ArtMethod* referrer,
|
|
Thread* self)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
return MterpSetStatic<int64_t, Primitive::kPrimLong>(field_idx,
|
|
*new_value,
|
|
referrer,
|
|
self,
|
|
&ArtField::SetLong<false>);
|
|
}
|
|
|
|
extern "C" mirror::Object* artAGetObjectFromMterp(mirror::Object* arr,
|
|
int32_t index)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
if (UNLIKELY(arr == nullptr)) {
|
|
ThrowNullPointerExceptionFromInterpreter();
|
|
return nullptr;
|
|
}
|
|
mirror::ObjectArray<mirror::Object>* array = arr->AsObjectArray<mirror::Object>();
|
|
if (LIKELY(array->CheckIsValidIndex(index))) {
|
|
return array->GetWithoutChecks(index);
|
|
} else {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
extern "C" mirror::Object* artIGetObjectFromMterp(mirror::Object* obj,
|
|
uint32_t field_offset)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
if (UNLIKELY(obj == nullptr)) {
|
|
ThrowNullPointerExceptionFromInterpreter();
|
|
return nullptr;
|
|
}
|
|
return obj->GetFieldObject<mirror::Object>(MemberOffset(field_offset));
|
|
}
|
|
|
|
/*
|
|
* Create a hotness_countdown based on the current method hotness_count and profiling
|
|
* mode. In short, determine how many hotness events we hit before reporting back
|
|
* to the full instrumentation via MterpAddHotnessBatch. Called once on entry to the method,
|
|
* and regenerated following batch updates.
|
|
*/
|
|
extern "C" ssize_t MterpSetUpHotnessCountdown(ArtMethod* method, ShadowFrame* shadow_frame)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
uint16_t hotness_count = method->GetCounter();
|
|
int32_t countdown_value = jit::kJitHotnessDisabled;
|
|
jit::Jit* jit = Runtime::Current()->GetJit();
|
|
if (jit != nullptr) {
|
|
int32_t warm_threshold = jit->WarmMethodThreshold();
|
|
int32_t hot_threshold = jit->HotMethodThreshold();
|
|
int32_t osr_threshold = jit->OSRMethodThreshold();
|
|
if (hotness_count < warm_threshold) {
|
|
countdown_value = warm_threshold - hotness_count;
|
|
} else if (hotness_count < hot_threshold) {
|
|
countdown_value = hot_threshold - hotness_count;
|
|
} else if (hotness_count < osr_threshold) {
|
|
countdown_value = osr_threshold - hotness_count;
|
|
} else {
|
|
countdown_value = jit::kJitCheckForOSR;
|
|
}
|
|
if (jit::Jit::ShouldUsePriorityThreadWeight()) {
|
|
int32_t priority_thread_weight = jit->PriorityThreadWeight();
|
|
countdown_value = std::min(countdown_value, countdown_value / priority_thread_weight);
|
|
}
|
|
}
|
|
/*
|
|
* The actual hotness threshold may exceed the range of our int16_t countdown value. This is
|
|
* not a problem, though. We can just break it down into smaller chunks.
|
|
*/
|
|
countdown_value = std::min(countdown_value,
|
|
static_cast<int32_t>(std::numeric_limits<int16_t>::max()));
|
|
shadow_frame->SetCachedHotnessCountdown(countdown_value);
|
|
shadow_frame->SetHotnessCountdown(countdown_value);
|
|
return countdown_value;
|
|
}
|
|
|
|
/*
|
|
* Report a batch of hotness events to the instrumentation and then return the new
|
|
* countdown value to the next time we should report.
|
|
*/
|
|
extern "C" ssize_t MterpAddHotnessBatch(ArtMethod* method,
|
|
ShadowFrame* shadow_frame,
|
|
Thread* self)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
jit::Jit* jit = Runtime::Current()->GetJit();
|
|
if (jit != nullptr) {
|
|
int16_t count = shadow_frame->GetCachedHotnessCountdown() - shadow_frame->GetHotnessCountdown();
|
|
jit->AddSamples(self, method, count, /*with_backedges*/ true);
|
|
}
|
|
return MterpSetUpHotnessCountdown(method, shadow_frame);
|
|
}
|
|
|
|
extern "C" size_t MterpMaybeDoOnStackReplacement(Thread* self,
|
|
ShadowFrame* shadow_frame,
|
|
int32_t offset)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
int16_t osr_countdown = shadow_frame->GetCachedHotnessCountdown() - 1;
|
|
bool did_osr = false;
|
|
/*
|
|
* To reduce the cost of polling the compiler to determine whether the requested OSR
|
|
* compilation has completed, only check every Nth time. NOTE: the "osr_countdown <= 0"
|
|
* condition is satisfied either by the decrement below or the initial setting of
|
|
* the cached countdown field to kJitCheckForOSR, which elsewhere is asserted to be -1.
|
|
*/
|
|
if (osr_countdown <= 0) {
|
|
ArtMethod* method = shadow_frame->GetMethod();
|
|
JValue* result = shadow_frame->GetResultRegister();
|
|
uint32_t dex_pc = shadow_frame->GetDexPC();
|
|
jit::Jit* jit = Runtime::Current()->GetJit();
|
|
osr_countdown = jit::Jit::kJitRecheckOSRThreshold;
|
|
if (offset <= 0) {
|
|
// Keep updating hotness in case a compilation request was dropped. Eventually it will retry.
|
|
jit->AddSamples(self, method, osr_countdown, /*with_backedges*/ true);
|
|
}
|
|
did_osr = jit::Jit::MaybeDoOnStackReplacement(self, method, dex_pc, offset, result);
|
|
}
|
|
shadow_frame->SetCachedHotnessCountdown(osr_countdown);
|
|
return did_osr;
|
|
}
|
|
|
|
} // namespace interpreter
|
|
} // namespace art
|