417 lines
17 KiB
C++
417 lines
17 KiB
C++
/*
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* Copyright (C) 2011 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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#include "common_compiler_test.h"
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#if defined(__arm__)
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#include <sys/ucontext.h>
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#endif
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#include <fstream>
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#include "class_linker.h"
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#include "compiled_method.h"
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#include "dex/quick_compiler_callbacks.h"
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#include "dex/verification_results.h"
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#include "dex/quick/dex_file_to_method_inliner_map.h"
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#include "driver/compiler_driver.h"
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#include "entrypoints/entrypoint_utils.h"
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#include "interpreter/interpreter.h"
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#include "mirror/art_method.h"
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#include "mirror/dex_cache.h"
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#include "mirror/object-inl.h"
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#include "scoped_thread_state_change.h"
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#include "thread-inl.h"
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#include "utils.h"
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namespace art {
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// Normally the ClassLinker supplies this.
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extern "C" void art_quick_generic_jni_trampoline(mirror::ArtMethod*);
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#if defined(__arm__)
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// A signal handler called when have an illegal instruction. We record the fact in
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// a global boolean and then increment the PC in the signal context to return to
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// the next instruction. We know the instruction is an sdiv (4 bytes long).
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static void baddivideinst(int signo, siginfo *si, void *data) {
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UNUSED(signo);
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UNUSED(si);
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struct ucontext *uc = (struct ucontext *)data;
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struct sigcontext *sc = &uc->uc_mcontext;
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sc->arm_r0 = 0; // set R0 to #0 to signal error
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sc->arm_pc += 4; // skip offending instruction
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}
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// This is in arch/arm/arm_sdiv.S. It does the following:
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// mov r1,#1
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// sdiv r0,r1,r1
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// bx lr
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//
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// the result will be the value 1 if sdiv is supported. If it is not supported
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// a SIGILL signal will be raised and the signal handler (baddivideinst) called.
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// The signal handler sets r0 to #0 and then increments pc beyond the failed instruction.
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// Thus if the instruction is not supported, the result of this function will be #0
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extern "C" bool CheckForARMSDIVInstruction();
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static InstructionSetFeatures GuessInstructionFeatures() {
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InstructionSetFeatures f;
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// Uncomment this for processing of /proc/cpuinfo.
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if (false) {
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// Look in /proc/cpuinfo for features we need. Only use this when we can guarantee that
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// the kernel puts the appropriate feature flags in here. Sometimes it doesn't.
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std::ifstream in("/proc/cpuinfo");
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if (in) {
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while (!in.eof()) {
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std::string line;
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std::getline(in, line);
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if (!in.eof()) {
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if (line.find("Features") != std::string::npos) {
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if (line.find("idivt") != std::string::npos) {
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f.SetHasDivideInstruction(true);
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}
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}
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}
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in.close();
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}
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} else {
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LOG(INFO) << "Failed to open /proc/cpuinfo";
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}
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}
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// See if have a sdiv instruction. Register a signal handler and try to execute
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// an sdiv instruction. If we get a SIGILL then it's not supported. We can't use
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// the /proc/cpuinfo method for this because Krait devices don't always put the idivt
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// feature in the list.
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struct sigaction sa, osa;
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sa.sa_flags = SA_ONSTACK | SA_RESTART | SA_SIGINFO;
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sa.sa_sigaction = baddivideinst;
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sigaction(SIGILL, &sa, &osa);
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if (CheckForARMSDIVInstruction()) {
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f.SetHasDivideInstruction(true);
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}
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// Restore the signal handler.
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sigaction(SIGILL, &osa, nullptr);
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// Other feature guesses in here.
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return f;
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}
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#endif
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// Given a set of instruction features from the build, parse it. The
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// input 'str' is a comma separated list of feature names. Parse it and
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// return the InstructionSetFeatures object.
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static InstructionSetFeatures ParseFeatureList(std::string str) {
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InstructionSetFeatures result;
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typedef std::vector<std::string> FeatureList;
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FeatureList features;
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Split(str, ',', features);
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for (FeatureList::iterator i = features.begin(); i != features.end(); i++) {
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std::string feature = Trim(*i);
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if (feature == "default") {
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// Nothing to do.
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} else if (feature == "div") {
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// Supports divide instruction.
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result.SetHasDivideInstruction(true);
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} else if (feature == "nodiv") {
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// Turn off support for divide instruction.
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result.SetHasDivideInstruction(false);
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} else {
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LOG(FATAL) << "Unknown instruction set feature: '" << feature << "'";
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}
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}
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// Others...
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return result;
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}
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CommonCompilerTest::CommonCompilerTest() {}
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CommonCompilerTest::~CommonCompilerTest() {}
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OatFile::OatMethod CommonCompilerTest::CreateOatMethod(const void* code) {
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CHECK(code != nullptr);
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const byte* base = reinterpret_cast<const byte*>(code); // Base of data points at code.
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base -= kPointerSize; // Move backward so that code_offset != 0.
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uint32_t code_offset = kPointerSize;
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return OatFile::OatMethod(base, code_offset);
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}
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void CommonCompilerTest::MakeExecutable(mirror::ArtMethod* method) {
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CHECK(method != nullptr);
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const CompiledMethod* compiled_method = nullptr;
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if (!method->IsAbstract()) {
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mirror::DexCache* dex_cache = method->GetDeclaringClass()->GetDexCache();
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const DexFile& dex_file = *dex_cache->GetDexFile();
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compiled_method =
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compiler_driver_->GetCompiledMethod(MethodReference(&dex_file,
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method->GetDexMethodIndex()));
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}
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if (compiled_method != nullptr) {
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const SwapVector<uint8_t>* code = compiled_method->GetQuickCode();
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const void* code_ptr;
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if (code != nullptr) {
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uint32_t code_size = code->size();
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CHECK_NE(0u, code_size);
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const SwapVector<uint8_t>& vmap_table = compiled_method->GetVmapTable();
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uint32_t vmap_table_offset = vmap_table.empty() ? 0u
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: sizeof(OatQuickMethodHeader) + vmap_table.size();
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const SwapVector<uint8_t>& mapping_table = compiled_method->GetMappingTable();
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uint32_t mapping_table_offset = mapping_table.empty() ? 0u
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: sizeof(OatQuickMethodHeader) + vmap_table.size() + mapping_table.size();
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const SwapVector<uint8_t>& gc_map = compiled_method->GetGcMap();
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uint32_t gc_map_offset = gc_map.empty() ? 0u
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: sizeof(OatQuickMethodHeader) + vmap_table.size() + mapping_table.size() + gc_map.size();
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OatQuickMethodHeader method_header(mapping_table_offset, vmap_table_offset, gc_map_offset,
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compiled_method->GetFrameSizeInBytes(),
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compiled_method->GetCoreSpillMask(),
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compiled_method->GetFpSpillMask(), code_size);
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header_code_and_maps_chunks_.push_back(std::vector<uint8_t>());
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std::vector<uint8_t>* chunk = &header_code_and_maps_chunks_.back();
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size_t size = sizeof(method_header) + code_size + vmap_table.size() + mapping_table.size() +
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gc_map.size();
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size_t code_offset = compiled_method->AlignCode(size - code_size);
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size_t padding = code_offset - (size - code_size);
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chunk->reserve(padding + size);
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chunk->resize(sizeof(method_header));
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memcpy(&(*chunk)[0], &method_header, sizeof(method_header));
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chunk->insert(chunk->begin(), vmap_table.begin(), vmap_table.end());
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chunk->insert(chunk->begin(), mapping_table.begin(), mapping_table.end());
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chunk->insert(chunk->begin(), gc_map.begin(), gc_map.end());
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chunk->insert(chunk->begin(), padding, 0);
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chunk->insert(chunk->end(), code->begin(), code->end());
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CHECK_EQ(padding + size, chunk->size());
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code_ptr = &(*chunk)[code_offset];
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} else {
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code = compiled_method->GetPortableCode();
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code_ptr = &(*code)[0];
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}
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MakeExecutable(code_ptr, code->size());
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const void* method_code = CompiledMethod::CodePointer(code_ptr,
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compiled_method->GetInstructionSet());
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LOG(INFO) << "MakeExecutable " << PrettyMethod(method) << " code=" << method_code;
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OatFile::OatMethod oat_method = CreateOatMethod(method_code);
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oat_method.LinkMethod(method);
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method->SetEntryPointFromInterpreter(artInterpreterToCompiledCodeBridge);
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} else {
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// No code? You must mean to go into the interpreter.
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// Or the generic JNI...
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if (!method->IsNative()) {
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#if defined(ART_USE_PORTABLE_COMPILER)
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const void* method_code = GetPortableToInterpreterBridge();
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#else
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const void* method_code = GetQuickToInterpreterBridge();
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#endif
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OatFile::OatMethod oat_method = CreateOatMethod(method_code);
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oat_method.LinkMethod(method);
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method->SetEntryPointFromInterpreter(interpreter::artInterpreterToInterpreterBridge);
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} else {
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const void* method_code = reinterpret_cast<void*>(art_quick_generic_jni_trampoline);
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OatFile::OatMethod oat_method = CreateOatMethod(method_code);
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oat_method.LinkMethod(method);
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method->SetEntryPointFromInterpreter(artInterpreterToCompiledCodeBridge);
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}
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}
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// Create bridges to transition between different kinds of compiled bridge.
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#if defined(ART_USE_PORTABLE_COMPILER)
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if (method->GetEntryPointFromPortableCompiledCode() == nullptr) {
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method->SetEntryPointFromPortableCompiledCode(GetPortableToQuickBridge());
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} else {
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CHECK(method->GetEntryPointFromQuickCompiledCode() == nullptr);
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method->SetEntryPointFromQuickCompiledCode(GetQuickToPortableBridge());
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method->SetIsPortableCompiled();
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}
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#else
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CHECK(method->GetEntryPointFromQuickCompiledCode() != nullptr);
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#endif
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}
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void CommonCompilerTest::MakeExecutable(const void* code_start, size_t code_length) {
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CHECK(code_start != nullptr);
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CHECK_NE(code_length, 0U);
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uintptr_t data = reinterpret_cast<uintptr_t>(code_start);
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uintptr_t base = RoundDown(data, kPageSize);
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uintptr_t limit = RoundUp(data + code_length, kPageSize);
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uintptr_t len = limit - base;
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int result = mprotect(reinterpret_cast<void*>(base), len, PROT_READ | PROT_WRITE | PROT_EXEC);
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CHECK_EQ(result, 0);
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// Flush instruction cache
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// Only uses __builtin___clear_cache if GCC >= 4.3.3
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#if GCC_VERSION >= 40303
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__builtin___clear_cache(reinterpret_cast<void*>(base), reinterpret_cast<void*>(base + len));
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#else
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// Only warn if not Intel as Intel doesn't have cache flush instructions.
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#if !defined(__i386__) && !defined(__x86_64__)
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LOG(WARNING) << "UNIMPLEMENTED: cache flush";
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#endif
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#endif
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}
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void CommonCompilerTest::MakeExecutable(mirror::ClassLoader* class_loader, const char* class_name) {
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std::string class_descriptor(DotToDescriptor(class_name));
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Thread* self = Thread::Current();
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StackHandleScope<1> hs(self);
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Handle<mirror::ClassLoader> loader(hs.NewHandle(class_loader));
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mirror::Class* klass = class_linker_->FindClass(self, class_descriptor.c_str(), loader);
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CHECK(klass != nullptr) << "Class not found " << class_name;
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for (size_t i = 0; i < klass->NumDirectMethods(); i++) {
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MakeExecutable(klass->GetDirectMethod(i));
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}
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for (size_t i = 0; i < klass->NumVirtualMethods(); i++) {
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MakeExecutable(klass->GetVirtualMethod(i));
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}
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}
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void CommonCompilerTest::SetUp() {
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CommonRuntimeTest::SetUp();
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{
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ScopedObjectAccess soa(Thread::Current());
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InstructionSet instruction_set = kRuntimeISA;
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// Take the default set of instruction features from the build.
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InstructionSetFeatures instruction_set_features =
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ParseFeatureList(Runtime::GetDefaultInstructionSetFeatures());
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#if defined(__arm__)
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InstructionSetFeatures runtime_features = GuessInstructionFeatures();
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// for ARM, do a runtime check to make sure that the features we are passed from
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// the build match the features we actually determine at runtime.
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ASSERT_LE(instruction_set_features, runtime_features);
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#endif
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runtime_->SetInstructionSet(instruction_set);
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for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) {
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Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i);
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if (!runtime_->HasCalleeSaveMethod(type)) {
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runtime_->SetCalleeSaveMethod(
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runtime_->CreateCalleeSaveMethod(type), type);
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}
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}
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// TODO: make selectable
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Compiler::Kind compiler_kind
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= (kUsePortableCompiler) ? Compiler::kPortable : Compiler::kQuick;
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timer_.reset(new CumulativeLogger("Compilation times"));
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compiler_driver_.reset(new CompilerDriver(compiler_options_.get(),
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verification_results_.get(),
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method_inliner_map_.get(),
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compiler_kind, instruction_set,
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instruction_set_features,
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true, new std::set<std::string>, nullptr,
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2, true, true, timer_.get()));
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}
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// We typically don't generate an image in unit tests, disable this optimization by default.
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compiler_driver_->SetSupportBootImageFixup(false);
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}
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void CommonCompilerTest::SetUpRuntimeOptions(RuntimeOptions* options) {
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CommonRuntimeTest::SetUpRuntimeOptions(options);
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compiler_options_.reset(new CompilerOptions);
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verification_results_.reset(new VerificationResults(compiler_options_.get()));
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method_inliner_map_.reset(new DexFileToMethodInlinerMap);
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callbacks_.reset(new QuickCompilerCallbacks(verification_results_.get(),
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method_inliner_map_.get()));
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options->push_back(std::make_pair("compilercallbacks", callbacks_.get()));
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}
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void CommonCompilerTest::TearDown() {
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timer_.reset();
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compiler_driver_.reset();
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callbacks_.reset();
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method_inliner_map_.reset();
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verification_results_.reset();
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compiler_options_.reset();
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CommonRuntimeTest::TearDown();
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}
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void CommonCompilerTest::CompileClass(mirror::ClassLoader* class_loader, const char* class_name) {
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std::string class_descriptor(DotToDescriptor(class_name));
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Thread* self = Thread::Current();
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StackHandleScope<1> hs(self);
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Handle<mirror::ClassLoader> loader(hs.NewHandle(class_loader));
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mirror::Class* klass = class_linker_->FindClass(self, class_descriptor.c_str(), loader);
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CHECK(klass != nullptr) << "Class not found " << class_name;
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for (size_t i = 0; i < klass->NumDirectMethods(); i++) {
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CompileMethod(klass->GetDirectMethod(i));
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}
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for (size_t i = 0; i < klass->NumVirtualMethods(); i++) {
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CompileMethod(klass->GetVirtualMethod(i));
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}
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}
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void CommonCompilerTest::CompileMethod(mirror::ArtMethod* method) {
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CHECK(method != nullptr);
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TimingLogger timings("CommonTest::CompileMethod", false, false);
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TimingLogger::ScopedTiming t(__FUNCTION__, &timings);
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compiler_driver_->CompileOne(method, &timings);
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TimingLogger::ScopedTiming t2("MakeExecutable", &timings);
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MakeExecutable(method);
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}
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void CommonCompilerTest::CompileDirectMethod(Handle<mirror::ClassLoader> class_loader,
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const char* class_name, const char* method_name,
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const char* signature) {
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std::string class_descriptor(DotToDescriptor(class_name));
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Thread* self = Thread::Current();
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mirror::Class* klass = class_linker_->FindClass(self, class_descriptor.c_str(), class_loader);
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CHECK(klass != nullptr) << "Class not found " << class_name;
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mirror::ArtMethod* method = klass->FindDirectMethod(method_name, signature);
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CHECK(method != nullptr) << "Direct method not found: "
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<< class_name << "." << method_name << signature;
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CompileMethod(method);
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}
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void CommonCompilerTest::CompileVirtualMethod(Handle<mirror::ClassLoader> class_loader, const char* class_name,
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const char* method_name, const char* signature)
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SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
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std::string class_descriptor(DotToDescriptor(class_name));
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Thread* self = Thread::Current();
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mirror::Class* klass = class_linker_->FindClass(self, class_descriptor.c_str(), class_loader);
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CHECK(klass != nullptr) << "Class not found " << class_name;
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mirror::ArtMethod* method = klass->FindVirtualMethod(method_name, signature);
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CHECK(method != NULL) << "Virtual method not found: "
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<< class_name << "." << method_name << signature;
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CompileMethod(method);
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}
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void CommonCompilerTest::ReserveImageSpace() {
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// Reserve where the image will be loaded up front so that other parts of test set up don't
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// accidentally end up colliding with the fixed memory address when we need to load the image.
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std::string error_msg;
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MemMap::Init();
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image_reservation_.reset(MemMap::MapAnonymous("image reservation",
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reinterpret_cast<byte*>(ART_BASE_ADDRESS),
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(size_t)100 * 1024 * 1024, // 100MB
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PROT_NONE,
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false /* no need for 4gb flag with fixed mmap*/,
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&error_msg));
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CHECK(image_reservation_.get() != nullptr) << error_msg;
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}
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void CommonCompilerTest::UnreserveImageSpace() {
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image_reservation_.reset();
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}
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} // namespace art
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