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allwinner_a64/android/art/compiler/utils/assembler_thumb_test.cc
August b9e30e05b1 upload android base code part3
2018-08-08 16:48:17 +08:00

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/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <dirent.h>
#include <errno.h>
#include <fstream>
#include <map>
#include <string.h>
#include <sys/types.h>
#include "gtest/gtest.h"
#include "jni/quick/calling_convention.h"
#include "utils/arm/jni_macro_assembler_arm_vixl.h"
#include "base/hex_dump.h"
#include "common_runtime_test.h"
namespace art {
namespace arm {
// Include results file (generated manually)
#include "assembler_thumb_test_expected.cc.inc"
#ifndef ART_TARGET_ANDROID
// This controls whether the results are printed to the
// screen or compared against the expected output.
// To generate new expected output, set this to true and
// copy the output into the .cc.inc file in the form
// of the other results.
//
// When this is false, the results are not printed to the
// output, but are compared against the expected results
// in the .cc.inc file.
static constexpr bool kPrintResults = false;
#endif
void SetAndroidData() {
const char* data = getenv("ANDROID_DATA");
if (data == nullptr) {
setenv("ANDROID_DATA", "/tmp", 1);
}
}
int CompareIgnoringSpace(const char* s1, const char* s2) {
while (*s1 != '\0') {
while (isspace(*s1)) ++s1;
while (isspace(*s2)) ++s2;
if (*s1 == '\0' || *s1 != *s2) {
break;
}
++s1;
++s2;
}
return *s1 - *s2;
}
void InitResults() {
if (test_results.empty()) {
setup_results();
}
}
std::string GetToolsDir() {
#ifndef ART_TARGET_ANDROID
// This will only work on the host. There is no as, objcopy or objdump on the device.
static std::string toolsdir;
if (toolsdir.empty()) {
setup_results();
toolsdir = CommonRuntimeTest::GetAndroidTargetToolsDir(kThumb2);
SetAndroidData();
}
return toolsdir;
#else
return std::string();
#endif
}
void DumpAndCheck(std::vector<uint8_t>& code, const char* testname, const char* const* results) {
#ifndef ART_TARGET_ANDROID
static std::string toolsdir = GetToolsDir();
ScratchFile file;
const char* filename = file.GetFilename().c_str();
std::ofstream out(filename);
if (out) {
out << ".section \".text\"\n";
out << ".syntax unified\n";
out << ".arch armv7-a\n";
out << ".thumb\n";
out << ".thumb_func\n";
out << ".type " << testname << ", #function\n";
out << ".global " << testname << "\n";
out << testname << ":\n";
out << ".fnstart\n";
for (uint32_t i = 0 ; i < code.size(); ++i) {
out << ".byte " << (static_cast<int>(code[i]) & 0xff) << "\n";
}
out << ".fnend\n";
out << ".size " << testname << ", .-" << testname << "\n";
}
out.close();
char cmd[1024];
// Assemble the .S
snprintf(cmd, sizeof(cmd), "%sas %s -o %s.o", toolsdir.c_str(), filename, filename);
int cmd_result = system(cmd);
ASSERT_EQ(cmd_result, 0) << strerror(errno);
// Remove the $d symbols to prevent the disassembler dumping the instructions
// as .word
snprintf(cmd, sizeof(cmd), "%sobjcopy -N '$d' %s.o %s.oo", toolsdir.c_str(), filename, filename);
int cmd_result2 = system(cmd);
ASSERT_EQ(cmd_result2, 0) << strerror(errno);
// Disassemble.
snprintf(cmd, sizeof(cmd), "%sobjdump -d %s.oo | grep '^ *[0-9a-f][0-9a-f]*:'",
toolsdir.c_str(), filename);
if (kPrintResults) {
// Print the results only, don't check. This is used to generate new output for inserting
// into the .inc file, so let's add the appropriate prefix/suffix needed in the C++ code.
strcat(cmd, " | sed '-es/^/ \"/' | sed '-es/$/\\\\n\",/'");
int cmd_result3 = system(cmd);
ASSERT_EQ(cmd_result3, 0) << strerror(errno);
} else {
// Check the results match the appropriate results in the .inc file.
FILE *fp = popen(cmd, "r");
ASSERT_TRUE(fp != nullptr);
uint32_t lineindex = 0;
while (!feof(fp)) {
char testline[256];
char *s = fgets(testline, sizeof(testline), fp);
if (s == nullptr) {
break;
}
if (CompareIgnoringSpace(results[lineindex], testline) != 0) {
LOG(FATAL) << "Output is not as expected at line: " << lineindex
<< results[lineindex] << "/" << testline << ", test name: " << testname;
}
++lineindex;
}
// Check that we are at the end.
ASSERT_TRUE(results[lineindex] == nullptr);
fclose(fp);
}
char buf[FILENAME_MAX];
snprintf(buf, sizeof(buf), "%s.o", filename);
unlink(buf);
snprintf(buf, sizeof(buf), "%s.oo", filename);
unlink(buf);
#endif // ART_TARGET_ANDROID
}
class ArmVIXLAssemblerTest : public ::testing::Test {
public:
ArmVIXLAssemblerTest() : pool(), arena(&pool), assembler(&arena) { }
ArenaPool pool;
ArenaAllocator arena;
ArmVIXLJNIMacroAssembler assembler;
};
#define __ assembler->
void EmitAndCheck(ArmVIXLJNIMacroAssembler* assembler, const char* testname,
const char* const* results) {
__ FinalizeCode();
size_t cs = __ CodeSize();
std::vector<uint8_t> managed_code(cs);
MemoryRegion code(&managed_code[0], managed_code.size());
__ FinalizeInstructions(code);
DumpAndCheck(managed_code, testname, results);
}
void EmitAndCheck(ArmVIXLJNIMacroAssembler* assembler, const char* testname) {
InitResults();
std::map<std::string, const char* const*>::iterator results = test_results.find(testname);
ASSERT_NE(results, test_results.end());
EmitAndCheck(assembler, testname, results->second);
}
#undef __
#define __ assembler.
TEST_F(ArmVIXLAssemblerTest, VixlJniHelpers) {
// Run the test only with Baker read barriers, as the expected
// generated code contains a Marking Register refresh instruction.
TEST_DISABLED_WITHOUT_BAKER_READ_BARRIERS();
const bool is_static = true;
const bool is_synchronized = false;
const bool is_critical_native = false;
const char* shorty = "IIFII";
ArenaPool pool;
ArenaAllocator arena(&pool);
std::unique_ptr<JniCallingConvention> jni_conv(
JniCallingConvention::Create(&arena,
is_static,
is_synchronized,
is_critical_native,
shorty,
kThumb2));
std::unique_ptr<ManagedRuntimeCallingConvention> mr_conv(
ManagedRuntimeCallingConvention::Create(&arena, is_static, is_synchronized, shorty, kThumb2));
const int frame_size(jni_conv->FrameSize());
ArrayRef<const ManagedRegister> callee_save_regs = jni_conv->CalleeSaveRegisters();
const ManagedRegister method_register = ArmManagedRegister::FromCoreRegister(R0);
const ManagedRegister scratch_register = ArmManagedRegister::FromCoreRegister(R12);
__ BuildFrame(frame_size, mr_conv->MethodRegister(), callee_save_regs, mr_conv->EntrySpills());
__ IncreaseFrameSize(32);
// Loads
__ IncreaseFrameSize(4096);
__ Load(method_register, FrameOffset(32), 4);
__ Load(method_register, FrameOffset(124), 4);
__ Load(method_register, FrameOffset(132), 4);
__ Load(method_register, FrameOffset(1020), 4);
__ Load(method_register, FrameOffset(1024), 4);
__ Load(scratch_register, FrameOffset(4092), 4);
__ Load(scratch_register, FrameOffset(4096), 4);
__ LoadRawPtrFromThread(scratch_register, ThreadOffset32(512));
__ LoadRef(method_register, scratch_register, MemberOffset(128), /* unpoison_reference */ false);
// Stores
__ Store(FrameOffset(32), method_register, 4);
__ Store(FrameOffset(124), method_register, 4);
__ Store(FrameOffset(132), method_register, 4);
__ Store(FrameOffset(1020), method_register, 4);
__ Store(FrameOffset(1024), method_register, 4);
__ Store(FrameOffset(4092), scratch_register, 4);
__ Store(FrameOffset(4096), scratch_register, 4);
__ StoreImmediateToFrame(FrameOffset(48), 0xFF, scratch_register);
__ StoreImmediateToFrame(FrameOffset(48), 0xFFFFFF, scratch_register);
__ StoreRawPtr(FrameOffset(48), scratch_register);
__ StoreRef(FrameOffset(48), scratch_register);
__ StoreSpanning(FrameOffset(48), method_register, FrameOffset(48), scratch_register);
__ StoreStackOffsetToThread(ThreadOffset32(512), FrameOffset(4096), scratch_register);
__ StoreStackPointerToThread(ThreadOffset32(512));
// Other
__ Call(method_register, FrameOffset(48), scratch_register);
__ Copy(FrameOffset(48), FrameOffset(44), scratch_register, 4);
__ CopyRawPtrFromThread(FrameOffset(44), ThreadOffset32(512), scratch_register);
__ CopyRef(FrameOffset(48), FrameOffset(44), scratch_register);
__ GetCurrentThread(method_register);
__ GetCurrentThread(FrameOffset(48), scratch_register);
__ Move(scratch_register, method_register, 4);
__ VerifyObject(scratch_register, false);
__ CreateHandleScopeEntry(scratch_register, FrameOffset(48), scratch_register, true);
__ CreateHandleScopeEntry(scratch_register, FrameOffset(48), scratch_register, false);
__ CreateHandleScopeEntry(method_register, FrameOffset(48), scratch_register, true);
__ CreateHandleScopeEntry(FrameOffset(48), FrameOffset(64), scratch_register, true);
__ CreateHandleScopeEntry(method_register, FrameOffset(0), scratch_register, true);
__ CreateHandleScopeEntry(method_register, FrameOffset(1025), scratch_register, true);
__ CreateHandleScopeEntry(scratch_register, FrameOffset(1025), scratch_register, true);
__ ExceptionPoll(scratch_register, 0);
// Push the target out of range of branch emitted by ExceptionPoll.
for (int i = 0; i < 64; i++) {
__ Store(FrameOffset(2047), scratch_register, 4);
}
__ DecreaseFrameSize(4096);
__ DecreaseFrameSize(32);
__ RemoveFrame(frame_size, callee_save_regs);
EmitAndCheck(&assembler, "VixlJniHelpers");
}
#undef __
// TODO: Avoid these macros.
#define R0 vixl::aarch32::r0
#define R2 vixl::aarch32::r2
#define R4 vixl::aarch32::r4
#define R12 vixl::aarch32::r12
#define __ assembler.asm_.
TEST_F(ArmVIXLAssemblerTest, VixlLoadFromOffset) {
__ LoadFromOffset(kLoadWord, R2, R4, 12);
__ LoadFromOffset(kLoadWord, R2, R4, 0xfff);
__ LoadFromOffset(kLoadWord, R2, R4, 0x1000);
__ LoadFromOffset(kLoadWord, R2, R4, 0x1000a4);
__ LoadFromOffset(kLoadWord, R2, R4, 0x101000);
__ LoadFromOffset(kLoadWord, R4, R4, 0x101000);
__ LoadFromOffset(kLoadUnsignedHalfword, R2, R4, 12);
__ LoadFromOffset(kLoadUnsignedHalfword, R2, R4, 0xfff);
__ LoadFromOffset(kLoadUnsignedHalfword, R2, R4, 0x1000);
__ LoadFromOffset(kLoadUnsignedHalfword, R2, R4, 0x1000a4);
__ LoadFromOffset(kLoadUnsignedHalfword, R2, R4, 0x101000);
__ LoadFromOffset(kLoadUnsignedHalfword, R4, R4, 0x101000);
__ LoadFromOffset(kLoadWordPair, R2, R4, 12);
__ LoadFromOffset(kLoadWordPair, R2, R4, 0x3fc);
__ LoadFromOffset(kLoadWordPair, R2, R4, 0x400);
__ LoadFromOffset(kLoadWordPair, R2, R4, 0x400a4);
__ LoadFromOffset(kLoadWordPair, R2, R4, 0x40400);
__ LoadFromOffset(kLoadWordPair, R4, R4, 0x40400);
vixl::aarch32::UseScratchRegisterScope temps(assembler.asm_.GetVIXLAssembler());
temps.Exclude(R12);
__ LoadFromOffset(kLoadWord, R0, R12, 12); // 32-bit because of R12.
temps.Include(R12);
__ LoadFromOffset(kLoadWord, R2, R4, 0xa4 - 0x100000);
__ LoadFromOffset(kLoadSignedByte, R2, R4, 12);
__ LoadFromOffset(kLoadUnsignedByte, R2, R4, 12);
__ LoadFromOffset(kLoadSignedHalfword, R2, R4, 12);
EmitAndCheck(&assembler, "VixlLoadFromOffset");
}
TEST_F(ArmVIXLAssemblerTest, VixlStoreToOffset) {
__ StoreToOffset(kStoreWord, R2, R4, 12);
__ StoreToOffset(kStoreWord, R2, R4, 0xfff);
__ StoreToOffset(kStoreWord, R2, R4, 0x1000);
__ StoreToOffset(kStoreWord, R2, R4, 0x1000a4);
__ StoreToOffset(kStoreWord, R2, R4, 0x101000);
__ StoreToOffset(kStoreWord, R4, R4, 0x101000);
__ StoreToOffset(kStoreHalfword, R2, R4, 12);
__ StoreToOffset(kStoreHalfword, R2, R4, 0xfff);
__ StoreToOffset(kStoreHalfword, R2, R4, 0x1000);
__ StoreToOffset(kStoreHalfword, R2, R4, 0x1000a4);
__ StoreToOffset(kStoreHalfword, R2, R4, 0x101000);
__ StoreToOffset(kStoreHalfword, R4, R4, 0x101000);
__ StoreToOffset(kStoreWordPair, R2, R4, 12);
__ StoreToOffset(kStoreWordPair, R2, R4, 0x3fc);
__ StoreToOffset(kStoreWordPair, R2, R4, 0x400);
__ StoreToOffset(kStoreWordPair, R2, R4, 0x400a4);
__ StoreToOffset(kStoreWordPair, R2, R4, 0x40400);
__ StoreToOffset(kStoreWordPair, R4, R4, 0x40400);
vixl::aarch32::UseScratchRegisterScope temps(assembler.asm_.GetVIXLAssembler());
temps.Exclude(R12);
__ StoreToOffset(kStoreWord, R0, R12, 12); // 32-bit because of R12.
temps.Include(R12);
__ StoreToOffset(kStoreWord, R2, R4, 0xa4 - 0x100000);
__ StoreToOffset(kStoreByte, R2, R4, 12);
EmitAndCheck(&assembler, "VixlStoreToOffset");
}
#undef __
} // namespace arm
} // namespace art
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