/*
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* Copyright (C) 2014 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 <dirent.h>
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#include <errno.h>
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#include <string.h>
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#include <sys/types.h>
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#include <fstream>
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#include <map>
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#include "gtest/gtest.h"
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#include "jni/quick/calling_convention.h"
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#include "utils/arm/jni_macro_assembler_arm_vixl.h"
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#include "base/hex_dump.h"
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#include "base/malloc_arena_pool.h"
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#include "common_runtime_test.h"
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namespace art {
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namespace arm {
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// Include results file (generated manually)
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#include "assembler_thumb_test_expected.cc.inc"
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#ifndef ART_TARGET_ANDROID
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// This controls whether the results are printed to the
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// screen or compared against the expected output.
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// To generate new expected output, set this to true and
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// copy the output into the .cc.inc file in the form
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// of the other results.
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//
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// When this is false, the results are not printed to the
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// output, but are compared against the expected results
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// in the .cc.inc file.
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static constexpr bool kPrintResults = false;
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#endif
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void SetAndroidData() {
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const char* data = getenv("ANDROID_DATA");
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if (data == nullptr) {
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setenv("ANDROID_DATA", "/tmp", 1);
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}
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}
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int CompareIgnoringSpace(const char* s1, const char* s2) {
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while (*s1 != '\0') {
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while (isspace(*s1)) ++s1;
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while (isspace(*s2)) ++s2;
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if (*s1 == '\0' || *s1 != *s2) {
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break;
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}
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++s1;
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++s2;
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}
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return *s1 - *s2;
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}
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void InitResults() {
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if (test_results.empty()) {
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setup_results();
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}
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}
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std::string GetToolsDir() {
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#ifndef ART_TARGET_ANDROID
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// This will only work on the host. There is no as, objcopy or objdump on the device.
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static std::string toolsdir;
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if (toolsdir.empty()) {
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setup_results();
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toolsdir = CommonRuntimeTest::GetAndroidTargetToolsDir(InstructionSet::kThumb2);
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SetAndroidData();
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}
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return toolsdir;
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#else
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return std::string();
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#endif
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}
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void DumpAndCheck(std::vector<uint8_t>& code, const char* testname, const char* const* results) {
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#ifndef ART_TARGET_ANDROID
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static std::string toolsdir = GetToolsDir();
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ScratchFile file;
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const char* filename = file.GetFilename().c_str();
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std::ofstream out(filename);
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if (out) {
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out << ".section \".text\"\n";
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out << ".syntax unified\n";
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out << ".arch armv7-a\n";
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out << ".thumb\n";
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out << ".thumb_func\n";
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out << ".type " << testname << ", #function\n";
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out << ".global " << testname << "\n";
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out << testname << ":\n";
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out << ".fnstart\n";
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for (uint32_t i = 0 ; i < code.size(); ++i) {
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out << ".byte " << (static_cast<int>(code[i]) & 0xff) << "\n";
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}
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out << ".fnend\n";
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out << ".size " << testname << ", .-" << testname << "\n";
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}
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out.close();
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char cmd[1024];
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// Assemble the .S
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snprintf(cmd, sizeof(cmd), "%sas %s -o %s.o", toolsdir.c_str(), filename, filename);
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int cmd_result = system(cmd);
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ASSERT_EQ(cmd_result, 0) << cmd << strerror(errno);
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// Disassemble.
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snprintf(cmd, sizeof(cmd), "%sobjdump -D -M force-thumb --section=.text %s.o | grep '^ *[0-9a-f][0-9a-f]*:'",
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toolsdir.c_str(), filename);
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if (kPrintResults) {
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// Print the results only, don't check. This is used to generate new output for inserting
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// into the .inc file, so let's add the appropriate prefix/suffix needed in the C++ code.
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strcat(cmd, " | sed '-es/^/ \"/' | sed '-es/$/\\\\n\",/'");
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int cmd_result3 = system(cmd);
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ASSERT_EQ(cmd_result3, 0) << strerror(errno);
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} else {
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// Check the results match the appropriate results in the .inc file.
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FILE *fp = popen(cmd, "r");
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ASSERT_TRUE(fp != nullptr);
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uint32_t lineindex = 0;
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while (!feof(fp)) {
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char testline[256];
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char *s = fgets(testline, sizeof(testline), fp);
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if (s == nullptr) {
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break;
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}
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if (CompareIgnoringSpace(results[lineindex], testline) != 0) {
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LOG(FATAL) << "Output is not as expected at line: " << lineindex
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<< results[lineindex] << "/" << testline << ", test name: " << testname;
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}
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++lineindex;
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}
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// Check that we are at the end.
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ASSERT_TRUE(results[lineindex] == nullptr);
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fclose(fp);
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}
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char buf[FILENAME_MAX];
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snprintf(buf, sizeof(buf), "%s.o", filename);
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unlink(buf);
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#endif // ART_TARGET_ANDROID
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}
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class ArmVIXLAssemblerTest : public ::testing::Test {
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public:
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ArmVIXLAssemblerTest() : pool(), allocator(&pool), assembler(&allocator) { }
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MallocArenaPool pool;
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ArenaAllocator allocator;
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ArmVIXLJNIMacroAssembler assembler;
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};
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#define __ assembler->
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void EmitAndCheck(ArmVIXLJNIMacroAssembler* assembler, const char* testname,
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const char* const* results) {
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__ FinalizeCode();
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size_t cs = __ CodeSize();
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std::vector<uint8_t> managed_code(cs);
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MemoryRegion code(&managed_code[0], managed_code.size());
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__ FinalizeInstructions(code);
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DumpAndCheck(managed_code, testname, results);
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}
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void EmitAndCheck(ArmVIXLJNIMacroAssembler* assembler, const char* testname) {
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InitResults();
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std::map<std::string, const char* const*>::iterator results = test_results.find(testname);
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ASSERT_NE(results, test_results.end());
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EmitAndCheck(assembler, testname, results->second);
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}
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#undef __
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#define __ assembler.
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TEST_F(ArmVIXLAssemblerTest, VixlJniHelpers) {
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// Run the test only with Baker read barriers, as the expected
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// generated code contains a Marking Register refresh instruction.
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TEST_DISABLED_WITHOUT_BAKER_READ_BARRIERS();
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const bool is_static = true;
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const bool is_synchronized = false;
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const bool is_critical_native = false;
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const char* shorty = "IIFII";
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std::unique_ptr<JniCallingConvention> jni_conv(
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JniCallingConvention::Create(&allocator,
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is_static,
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is_synchronized,
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is_critical_native,
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shorty,
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InstructionSet::kThumb2));
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std::unique_ptr<ManagedRuntimeCallingConvention> mr_conv(
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ManagedRuntimeCallingConvention::Create(
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&allocator, is_static, is_synchronized, shorty, InstructionSet::kThumb2));
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const int frame_size(jni_conv->FrameSize());
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ArrayRef<const ManagedRegister> callee_save_regs = jni_conv->CalleeSaveRegisters();
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const ManagedRegister method_register = ArmManagedRegister::FromCoreRegister(R0);
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const ManagedRegister scratch_register = ArmManagedRegister::FromCoreRegister(R12);
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__ BuildFrame(frame_size, mr_conv->MethodRegister(), callee_save_regs, mr_conv->EntrySpills());
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__ IncreaseFrameSize(32);
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// Loads
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__ IncreaseFrameSize(4096);
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__ Load(method_register, FrameOffset(32), 4);
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__ Load(method_register, FrameOffset(124), 4);
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__ Load(method_register, FrameOffset(132), 4);
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__ Load(method_register, FrameOffset(1020), 4);
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__ Load(method_register, FrameOffset(1024), 4);
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__ Load(scratch_register, FrameOffset(4092), 4);
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__ Load(scratch_register, FrameOffset(4096), 4);
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__ LoadRawPtrFromThread(scratch_register, ThreadOffset32(512));
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__ LoadRef(method_register, scratch_register, MemberOffset(128), /* unpoison_reference= */ false);
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// Stores
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__ Store(FrameOffset(32), method_register, 4);
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__ Store(FrameOffset(124), method_register, 4);
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__ Store(FrameOffset(132), method_register, 4);
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__ Store(FrameOffset(1020), method_register, 4);
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__ Store(FrameOffset(1024), method_register, 4);
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__ Store(FrameOffset(4092), scratch_register, 4);
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__ Store(FrameOffset(4096), scratch_register, 4);
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__ StoreImmediateToFrame(FrameOffset(48), 0xFF, scratch_register);
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__ StoreImmediateToFrame(FrameOffset(48), 0xFFFFFF, scratch_register);
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__ StoreRawPtr(FrameOffset(48), scratch_register);
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__ StoreRef(FrameOffset(48), scratch_register);
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__ StoreSpanning(FrameOffset(48), method_register, FrameOffset(48), scratch_register);
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__ StoreStackOffsetToThread(ThreadOffset32(512), FrameOffset(4096), scratch_register);
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__ StoreStackPointerToThread(ThreadOffset32(512));
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// Other
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__ Call(method_register, FrameOffset(48), scratch_register);
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__ Copy(FrameOffset(48), FrameOffset(44), scratch_register, 4);
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__ CopyRawPtrFromThread(FrameOffset(44), ThreadOffset32(512), scratch_register);
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__ CopyRef(FrameOffset(48), FrameOffset(44), scratch_register);
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__ GetCurrentThread(method_register);
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__ GetCurrentThread(FrameOffset(48), scratch_register);
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__ Move(scratch_register, method_register, 4);
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__ VerifyObject(scratch_register, false);
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__ CreateHandleScopeEntry(scratch_register, FrameOffset(48), scratch_register, true);
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__ CreateHandleScopeEntry(scratch_register, FrameOffset(48), scratch_register, false);
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__ CreateHandleScopeEntry(method_register, FrameOffset(48), scratch_register, true);
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__ CreateHandleScopeEntry(FrameOffset(48), FrameOffset(64), scratch_register, true);
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__ CreateHandleScopeEntry(method_register, FrameOffset(0), scratch_register, true);
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__ CreateHandleScopeEntry(method_register, FrameOffset(1025), scratch_register, true);
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__ CreateHandleScopeEntry(scratch_register, FrameOffset(1025), scratch_register, true);
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__ ExceptionPoll(scratch_register, 0);
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// Push the target out of range of branch emitted by ExceptionPoll.
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for (int i = 0; i < 64; i++) {
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__ Store(FrameOffset(2047), scratch_register, 4);
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}
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__ DecreaseFrameSize(4096);
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__ DecreaseFrameSize(32);
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__ RemoveFrame(frame_size, callee_save_regs, /* may_suspend= */ true);
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EmitAndCheck(&assembler, "VixlJniHelpers");
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}
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#undef __
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// TODO: Avoid these macros.
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#define R0 vixl::aarch32::r0
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#define R2 vixl::aarch32::r2
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#define R4 vixl::aarch32::r4
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#define R12 vixl::aarch32::r12
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#define __ assembler.asm_.
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TEST_F(ArmVIXLAssemblerTest, VixlLoadFromOffset) {
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__ LoadFromOffset(kLoadWord, R2, R4, 12);
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__ LoadFromOffset(kLoadWord, R2, R4, 0xfff);
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__ LoadFromOffset(kLoadWord, R2, R4, 0x1000);
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__ LoadFromOffset(kLoadWord, R2, R4, 0x1000a4);
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__ LoadFromOffset(kLoadWord, R2, R4, 0x101000);
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__ LoadFromOffset(kLoadWord, R4, R4, 0x101000);
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__ LoadFromOffset(kLoadUnsignedHalfword, R2, R4, 12);
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__ LoadFromOffset(kLoadUnsignedHalfword, R2, R4, 0xfff);
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__ LoadFromOffset(kLoadUnsignedHalfword, R2, R4, 0x1000);
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__ LoadFromOffset(kLoadUnsignedHalfword, R2, R4, 0x1000a4);
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__ LoadFromOffset(kLoadUnsignedHalfword, R2, R4, 0x101000);
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__ LoadFromOffset(kLoadUnsignedHalfword, R4, R4, 0x101000);
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__ LoadFromOffset(kLoadWordPair, R2, R4, 12);
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__ LoadFromOffset(kLoadWordPair, R2, R4, 0x3fc);
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__ LoadFromOffset(kLoadWordPair, R2, R4, 0x400);
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__ LoadFromOffset(kLoadWordPair, R2, R4, 0x400a4);
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__ LoadFromOffset(kLoadWordPair, R2, R4, 0x40400);
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__ LoadFromOffset(kLoadWordPair, R4, R4, 0x40400);
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vixl::aarch32::UseScratchRegisterScope temps(assembler.asm_.GetVIXLAssembler());
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temps.Exclude(R12);
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__ LoadFromOffset(kLoadWord, R0, R12, 12); // 32-bit because of R12.
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temps.Include(R12);
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__ LoadFromOffset(kLoadWord, R2, R4, 0xa4 - 0x100000);
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__ LoadFromOffset(kLoadSignedByte, R2, R4, 12);
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__ LoadFromOffset(kLoadUnsignedByte, R2, R4, 12);
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__ LoadFromOffset(kLoadSignedHalfword, R2, R4, 12);
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EmitAndCheck(&assembler, "VixlLoadFromOffset");
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}
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TEST_F(ArmVIXLAssemblerTest, VixlStoreToOffset) {
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__ StoreToOffset(kStoreWord, R2, R4, 12);
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__ StoreToOffset(kStoreWord, R2, R4, 0xfff);
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__ StoreToOffset(kStoreWord, R2, R4, 0x1000);
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__ StoreToOffset(kStoreWord, R2, R4, 0x1000a4);
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__ StoreToOffset(kStoreWord, R2, R4, 0x101000);
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__ StoreToOffset(kStoreWord, R4, R4, 0x101000);
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__ StoreToOffset(kStoreHalfword, R2, R4, 12);
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__ StoreToOffset(kStoreHalfword, R2, R4, 0xfff);
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__ StoreToOffset(kStoreHalfword, R2, R4, 0x1000);
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__ StoreToOffset(kStoreHalfword, R2, R4, 0x1000a4);
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__ StoreToOffset(kStoreHalfword, R2, R4, 0x101000);
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__ StoreToOffset(kStoreHalfword, R4, R4, 0x101000);
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__ StoreToOffset(kStoreWordPair, R2, R4, 12);
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__ StoreToOffset(kStoreWordPair, R2, R4, 0x3fc);
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__ StoreToOffset(kStoreWordPair, R2, R4, 0x400);
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__ StoreToOffset(kStoreWordPair, R2, R4, 0x400a4);
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__ StoreToOffset(kStoreWordPair, R2, R4, 0x40400);
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__ StoreToOffset(kStoreWordPair, R4, R4, 0x40400);
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vixl::aarch32::UseScratchRegisterScope temps(assembler.asm_.GetVIXLAssembler());
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temps.Exclude(R12);
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__ StoreToOffset(kStoreWord, R0, R12, 12); // 32-bit because of R12.
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temps.Include(R12);
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__ StoreToOffset(kStoreWord, R2, R4, 0xa4 - 0x100000);
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__ StoreToOffset(kStoreByte, R2, R4, 12);
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EmitAndCheck(&assembler, "VixlStoreToOffset");
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}
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#undef __
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} // namespace arm
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} // namespace art
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