compiler/utils/assembler_thumb_test.cc - LeafOS-Project/android_art - Gitiles

 /*
  * 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 <string.h>
 #include <sys/types.h>
 #include <fstream>
 #include <map>

 #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 "base/malloc_arena_pool.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(InstructionSet::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) << cmd << strerror(errno);

   // Disassemble.
   snprintf(cmd, sizeof(cmd), "%sobjdump -D -M force-thumb --section=.text %s.o  | 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);
 #endif  // ART_TARGET_ANDROID
 }

 class ArmVIXLAssemblerTest : public ::testing::Test {
  public:
   ArmVIXLAssemblerTest() : pool(), allocator(&pool), assembler(&allocator) { }

   MallocArenaPool pool;
   ArenaAllocator allocator;
   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";

   std::unique_ptr<JniCallingConvention> jni_conv(
       JniCallingConvention::Create(&allocator,
                                    is_static,
                                    is_synchronized,
                                    is_critical_native,
                                    shorty,
                                    InstructionSet::kThumb2));
   std::unique_ptr<ManagedRuntimeCallingConvention> mr_conv(
       ManagedRuntimeCallingConvention::Create(
           &allocator, is_static, is_synchronized, shorty, InstructionSet::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, /* may_suspend */ true);

   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
	/*
	* 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 <string.h>
	#include <sys/types.h>
	#include <fstream>
	#include <map>

	#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 "base/malloc_arena_pool.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(InstructionSet::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) << cmd << strerror(errno);

	// Disassemble.
	snprintf(cmd, sizeof(cmd), "%sobjdump -D -M force-thumb --section=.text %s.o \| 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);
	#endif // ART_TARGET_ANDROID
	}

	class ArmVIXLAssemblerTest : public ::testing::Test {
	public:
	ArmVIXLAssemblerTest() : pool(), allocator(&pool), assembler(&allocator) { }

	MallocArenaPool pool;
	ArenaAllocator allocator;
	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";

	std::unique_ptr<JniCallingConvention> jni_conv(
	JniCallingConvention::Create(&allocator,
	is_static,
	is_synchronized,
	is_critical_native,
	shorty,
	InstructionSet::kThumb2));
	std::unique_ptr<ManagedRuntimeCallingConvention> mr_conv(
	ManagedRuntimeCallingConvention::Create(
	&allocator, is_static, is_synchronized, shorty, InstructionSet::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, /* may_suspend */ true);

	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