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Merge "Find first non-zero jit debug entry."

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This commit is contained in:
Christopher Ferris 2018-01-17 18:07:55 +00:00 • committed by Gerrit Code Review
commit 765516ecaf
29 changed files with 282 additions and 8 deletions
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1
libunwindstack/Android.bp
View file

@ -170,6 +170,7 @@ cc_test {
data: [
"tests/files/elf32.xz",
"tests/files/elf64.xz",
"tests/files/offline/jit_debug_arm32/*",
"tests/files/offline/jit_debug_x86_32/*",
"tests/files/offline/gnu_debugdata_arm32/*",
"tests/files/offline/straddle_arm32/*",

14
libunwindstack/JitDebug.cpp
View file

@ -173,7 +173,6 @@ void JitDebug::Init(Maps* maps) {
initialized_ = true;
std::string descriptor_name("__jit_debug_descriptor");
uint64_t descriptor_addr = 0;
for (MapInfo* info : *maps) {
if (!(info->flags & PROT_EXEC) || !(info->flags & PROT_READ) || info->offset != 0) {
continue;
@ -194,17 +193,16 @@ void JitDebug::Init(Maps* maps) {
}
Elf* elf = info->GetElf(memory_, true);
uint64_t descriptor_addr;
if (elf->GetGlobalVariable(descriptor_name, &descriptor_addr)) {
// Search for the first non-zero entry.
descriptor_addr += info->start;
break;
entry_addr_ = (this->*read_descriptor_func_)(descriptor_addr);
if (entry_addr_ != 0) {
break;
}
}
}
if (descriptor_addr == 0) {
return;
}
entry_addr_ = (this->*read_descriptor_func_)(descriptor_addr);
}
Elf* JitDebug::GetElf(Maps* maps, uint64_t pc) {

32
libunwindstack/tests/JitDebugTest.cpp
View file

@ -49,6 +49,7 @@ class JitDebugTest : public ::testing::Test {
"a000-c000 --xp 00000000 00:00 0\n"
"c000-f000 rwxp 00000000 00:00 0\n"
"f000-11000 r-xp 00000000 00:00 0\n"
"12000-14000 r-xp 00000000 00:00 0\n"
"100000-110000 rw-p 0000000 00:00 0\n"
"200000-210000 rw-p 0000000 00:00 0\n"));
ASSERT_TRUE(maps_->Parse());
@ -72,6 +73,16 @@ class JitDebugTest : public ::testing::Test {
elf->FakeSetInterface(interface);
interface->FakeSetGlobalVariable("__jit_debug_descriptor", 0x800);
map_info->elf = elf;
map_info = maps_->Get(6);
ASSERT_TRUE(map_info != nullptr);
elf_memories_.push_back(new MemoryFake);
elf = new ElfFake(elf_memories_.back());
elf->FakeSetValid(true);
interface = new ElfInterfaceFake(elf_memories_.back());
elf->FakeSetInterface(interface);
interface->FakeSetGlobalVariable("__jit_debug_descriptor", 0x800);
map_info->elf = elf;
}
template <typename EhdrType, typename ShdrType>
@ -293,6 +304,27 @@ TEST_F(JitDebugTest, get_elf_32) {
EXPECT_EQ(elf, elf2);
}
TEST_F(JitDebugTest, get_multiple_jit_debug_descriptors_valid) {
CreateElf<Elf32_Ehdr, Elf32_Shdr>(0x4000, ELFCLASS32, EM_ARM, 0x1500, 0x200);
CreateElf<Elf32_Ehdr, Elf32_Shdr>(0x5000, ELFCLASS32, EM_ARM, 0x2000, 0x300);
WriteDescriptor32(0xf800, 0x200000);
WriteEntry32Pad(0x200000, 0, 0, 0x4000, 0x1000);
WriteDescriptor32(0x12800, 0x201000);
WriteEntry32Pad(0x201000, 0, 0, 0x5000, 0x1000);
ASSERT_TRUE(jit_debug_->GetElf(maps_.get(), 0x1500) != nullptr);
ASSERT_TRUE(jit_debug_->GetElf(maps_.get(), 0x2000) == nullptr);
// Now clear the descriptor entry for the first one.
WriteDescriptor32(0xf800, 0);
jit_debug_.reset(new JitDebug(process_memory_));
jit_debug_->SetArch(ARCH_ARM);
ASSERT_TRUE(jit_debug_->GetElf(maps_.get(), 0x1500) == nullptr);
ASSERT_TRUE(jit_debug_->GetElf(maps_.get(), 0x2000) != nullptr);
}
TEST_F(JitDebugTest, get_elf_x86) {
CreateElf<Elf32_Ehdr, Elf32_Shdr>(0x4000, ELFCLASS32, EM_ARM, 0x1500, 0x200);

219
libunwindstack/tests/UnwindOfflineTest.cpp
View file

@ -406,4 +406,223 @@ TEST(UnwindOfflineTest, jit_debug_x86_32) {
frame_info);
}
TEST(UnwindOfflineTest, jit_debug_arm32) {
std::string dir(TestGetFileDirectory() + "offline/jit_debug_arm32/");
MemoryOfflineParts* memory = new MemoryOfflineParts;
AddMemory(dir + "descriptor.data", memory);
AddMemory(dir + "descriptor1.data", memory);
AddMemory(dir + "stack.data", memory);
for (size_t i = 0; i < 7; i++) {
AddMemory(dir + "entry" + std::to_string(i) + ".data", memory);
AddMemory(dir + "jit" + std::to_string(i) + ".data", memory);
}
FILE* fp = fopen((dir + "regs.txt").c_str(), "r");
ASSERT_TRUE(fp != nullptr);
RegsArm regs;
uint64_t reg_value;
ASSERT_EQ(1, fscanf(fp, "r0: %" SCNx64 "\n", &reg_value));
regs[ARM_REG_R0] = reg_value;
ASSERT_EQ(1, fscanf(fp, "r1: %" SCNx64 "\n", &reg_value));
regs[ARM_REG_R1] = reg_value;
ASSERT_EQ(1, fscanf(fp, "r2: %" SCNx64 "\n", &reg_value));
regs[ARM_REG_R2] = reg_value;
ASSERT_EQ(1, fscanf(fp, "r3: %" SCNx64 "\n", &reg_value));
regs[ARM_REG_R3] = reg_value;
ASSERT_EQ(1, fscanf(fp, "r4: %" SCNx64 "\n", &reg_value));
regs[ARM_REG_R4] = reg_value;
ASSERT_EQ(1, fscanf(fp, "r5: %" SCNx64 "\n", &reg_value));
regs[ARM_REG_R5] = reg_value;
ASSERT_EQ(1, fscanf(fp, "r6: %" SCNx64 "\n", &reg_value));
regs[ARM_REG_R6] = reg_value;
ASSERT_EQ(1, fscanf(fp, "r7: %" SCNx64 "\n", &reg_value));
regs[ARM_REG_R7] = reg_value;
ASSERT_EQ(1, fscanf(fp, "r8: %" SCNx64 "\n", &reg_value));
regs[ARM_REG_R8] = reg_value;
ASSERT_EQ(1, fscanf(fp, "r9: %" SCNx64 "\n", &reg_value));
regs[ARM_REG_R9] = reg_value;
ASSERT_EQ(1, fscanf(fp, "r10: %" SCNx64 "\n", &reg_value));
regs[ARM_REG_R10] = reg_value;
ASSERT_EQ(1, fscanf(fp, "r11: %" SCNx64 "\n", &reg_value));
regs[ARM_REG_R11] = reg_value;
ASSERT_EQ(1, fscanf(fp, "ip: %" SCNx64 "\n", &reg_value));
regs[ARM_REG_R12] = reg_value;
ASSERT_EQ(1, fscanf(fp, "sp: %" SCNx64 "\n", &reg_value));
regs[ARM_REG_SP] = reg_value;
ASSERT_EQ(1, fscanf(fp, "lr: %" SCNx64 "\n", &reg_value));
regs[ARM_REG_LR] = reg_value;
ASSERT_EQ(1, fscanf(fp, "pc: %" SCNx64 "\n", &reg_value));
regs[ARM_REG_PC] = reg_value;
regs.SetFromRaw();
fclose(fp);
fp = fopen((dir + "maps.txt").c_str(), "r");
ASSERT_TRUE(fp != nullptr);
// The file is guaranteed to be less than 4096 bytes.
std::vector<char> buffer(4096);
ASSERT_NE(0U, fread(buffer.data(), 1, buffer.size(), fp));
fclose(fp);
BufferMaps maps(buffer.data());
ASSERT_TRUE(maps.Parse());
ASSERT_EQ(ARCH_ARM, regs.Arch());
std::shared_ptr<Memory> process_memory(memory);
char* cwd = getcwd(nullptr, 0);
ASSERT_EQ(0, chdir(dir.c_str()));
JitDebug jit_debug(process_memory);
Unwinder unwinder(128, &maps, &regs, process_memory);
unwinder.SetJitDebug(&jit_debug, regs.Arch());
unwinder.Unwind();
ASSERT_EQ(0, chdir(cwd));
free(cwd);
std::string frame_info(DumpFrames(unwinder));
ASSERT_EQ(76U, unwinder.NumFrames()) << "Unwind:\n" << frame_info;
EXPECT_EQ(
" #00 pc 00018a5e libarttestd.so (Java_Main_unwindInProcess+865)\n"
" #01 pc 0000212d (offset 0x2000) 137-cfi.odex (boolean Main.unwindInProcess(boolean, int, "
"boolean)+92)\n"
" #02 pc 00011cb1 anonymous:e2796000 (boolean Main.bar(boolean)+72)\n"
" #03 pc 00462175 libartd.so (art_quick_invoke_stub_internal+68)\n"
" #04 pc 00467129 libartd.so (art_quick_invoke_stub+228)\n"
" #05 pc 000bf7a9 libartd.so "
"(_ZN3art9ArtMethod6InvokeEPNS_6ThreadEPjjPNS_6JValueEPKc+864)\n"
" #06 pc 00247833 libartd.so "
"(_ZN3art11interpreter34ArtInterpreterToCompiledCodeBridgeEPNS_6ThreadEPNS_9ArtMethodEPNS_"
"11ShadowFrameEtPNS_6JValueE+382)\n"
" #07 pc 0022e935 libartd.so "
"(_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_"
"6JValueEb+244)\n"
" #08 pc 0022f71d libartd.so "
"(_ZN3art11interpreter30EnterInterpreterFromEntryPointEPNS_6ThreadERKNS_"
"20CodeItemDataAccessorEPNS_11ShadowFrameE+128)\n"
" #09 pc 00442865 libartd.so (artQuickToInterpreterBridge+796)\n"
" #10 pc 004666ff libartd.so (art_quick_to_interpreter_bridge+30)\n"
" #11 pc 00011c31 anonymous:e2796000 (int Main.compare(Main, Main)+64)\n"
" #12 pc 00462175 libartd.so (art_quick_invoke_stub_internal+68)\n"
" #13 pc 00467129 libartd.so (art_quick_invoke_stub+228)\n"
" #14 pc 000bf7a9 libartd.so "
"(_ZN3art9ArtMethod6InvokeEPNS_6ThreadEPjjPNS_6JValueEPKc+864)\n"
" #15 pc 00247833 libartd.so "
"(_ZN3art11interpreter34ArtInterpreterToCompiledCodeBridgeEPNS_6ThreadEPNS_9ArtMethodEPNS_"
"11ShadowFrameEtPNS_6JValueE+382)\n"
" #16 pc 0022e935 libartd.so "
"(_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_"
"6JValueEb+244)\n"
" #17 pc 0022f71d libartd.so "
"(_ZN3art11interpreter30EnterInterpreterFromEntryPointEPNS_6ThreadERKNS_"
"20CodeItemDataAccessorEPNS_11ShadowFrameE+128)\n"
" #18 pc 00442865 libartd.so (artQuickToInterpreterBridge+796)\n"
" #19 pc 004666ff libartd.so (art_quick_to_interpreter_bridge+30)\n"
" #20 pc 00011b77 anonymous:e2796000 (int Main.compare(java.lang.Object, "
"java.lang.Object)+118)\n"
" #21 pc 00462175 libartd.so (art_quick_invoke_stub_internal+68)\n"
" #22 pc 00467129 libartd.so (art_quick_invoke_stub+228)\n"
" #23 pc 000bf7a9 libartd.so "
"(_ZN3art9ArtMethod6InvokeEPNS_6ThreadEPjjPNS_6JValueEPKc+864)\n"
" #24 pc 00247833 libartd.so "
"(_ZN3art11interpreter34ArtInterpreterToCompiledCodeBridgeEPNS_6ThreadEPNS_9ArtMethodEPNS_"
"11ShadowFrameEtPNS_6JValueE+382)\n"
" #25 pc 0022e935 libartd.so "
"(_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_"
"6JValueEb+244)\n"
" #26 pc 0022f71d libartd.so "
"(_ZN3art11interpreter30EnterInterpreterFromEntryPointEPNS_6ThreadERKNS_"
"20CodeItemDataAccessorEPNS_11ShadowFrameE+128)\n"
" #27 pc 00442865 libartd.so (artQuickToInterpreterBridge+796)\n"
" #28 pc 004666ff libartd.so (art_quick_to_interpreter_bridge+30)\n"
" #29 pc 00011a29 anonymous:e2796000 (int "
"java.util.Arrays.binarySearch0(java.lang.Object[], int, int, java.lang.Object, "
"java.util.Comparator)+304)\n"
" #30 pc 00462175 libartd.so (art_quick_invoke_stub_internal+68)\n"
" #31 pc 0046722f libartd.so (art_quick_invoke_static_stub+226)\n"
" #32 pc 000bf7bb libartd.so "
"(_ZN3art9ArtMethod6InvokeEPNS_6ThreadEPjjPNS_6JValueEPKc+882)\n"
" #33 pc 00247833 libartd.so "
"(_ZN3art11interpreter34ArtInterpreterToCompiledCodeBridgeEPNS_6ThreadEPNS_9ArtMethodEPNS_"
"11ShadowFrameEtPNS_6JValueE+382)\n"
" #34 pc 0022e935 libartd.so "
"(_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_"
"6JValueEb+244)\n"
" #35 pc 0022f71d libartd.so "
"(_ZN3art11interpreter30EnterInterpreterFromEntryPointEPNS_6ThreadERKNS_"
"20CodeItemDataAccessorEPNS_11ShadowFrameE+128)\n"
" #36 pc 00442865 libartd.so (artQuickToInterpreterBridge+796)\n"
" #37 pc 004666ff libartd.so (art_quick_to_interpreter_bridge+30)\n"
" #38 pc 0001139b anonymous:e2796000 (boolean Main.foo()+178)\n"
" #39 pc 00462175 libartd.so (art_quick_invoke_stub_internal+68)\n"
" #40 pc 00467129 libartd.so (art_quick_invoke_stub+228)\n"
" #41 pc 000bf7a9 libartd.so "
"(_ZN3art9ArtMethod6InvokeEPNS_6ThreadEPjjPNS_6JValueEPKc+864)\n"
" #42 pc 00247833 libartd.so "
"(_ZN3art11interpreter34ArtInterpreterToCompiledCodeBridgeEPNS_6ThreadEPNS_9ArtMethodEPNS_"
"11ShadowFrameEtPNS_6JValueE+382)\n"
" #43 pc 0022e935 libartd.so "
"(_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_"
"6JValueEb+244)\n"
" #44 pc 0022f71d libartd.so "
"(_ZN3art11interpreter30EnterInterpreterFromEntryPointEPNS_6ThreadERKNS_"
"20CodeItemDataAccessorEPNS_11ShadowFrameE+128)\n"
" #45 pc 00442865 libartd.so (artQuickToInterpreterBridge+796)\n"
" #46 pc 004666ff libartd.so (art_quick_to_interpreter_bridge+30)\n"
" #47 pc 00010aa7 anonymous:e2796000 (void Main.runPrimary()+70)\n"
" #48 pc 00462175 libartd.so (art_quick_invoke_stub_internal+68)\n"
" #49 pc 00467129 libartd.so (art_quick_invoke_stub+228)\n"
" #50 pc 000bf7a9 libartd.so "
"(_ZN3art9ArtMethod6InvokeEPNS_6ThreadEPjjPNS_6JValueEPKc+864)\n"
" #51 pc 00247833 libartd.so "
"(_ZN3art11interpreter34ArtInterpreterToCompiledCodeBridgeEPNS_6ThreadEPNS_9ArtMethodEPNS_"
"11ShadowFrameEtPNS_6JValueE+382)\n"
" #52 pc 0022e935 libartd.so "
"(_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_"
"6JValueEb+244)\n"
" #53 pc 0022f71d libartd.so "
"(_ZN3art11interpreter30EnterInterpreterFromEntryPointEPNS_6ThreadERKNS_"
"20CodeItemDataAccessorEPNS_11ShadowFrameE+128)\n"
" #54 pc 00442865 libartd.so (artQuickToInterpreterBridge+796)\n"
" #55 pc 004666ff libartd.so (art_quick_to_interpreter_bridge+30)\n"
" #56 pc 0000ba99 anonymous:e2796000 (void Main.main(java.lang.String[])+144)\n"
" #57 pc 00462175 libartd.so (art_quick_invoke_stub_internal+68)\n"
" #58 pc 0046722f libartd.so (art_quick_invoke_static_stub+226)\n"
" #59 pc 000bf7bb libartd.so "
"(_ZN3art9ArtMethod6InvokeEPNS_6ThreadEPjjPNS_6JValueEPKc+882)\n"
" #60 pc 00247833 libartd.so "
"(_ZN3art11interpreter34ArtInterpreterToCompiledCodeBridgeEPNS_6ThreadEPNS_9ArtMethodEPNS_"
"11ShadowFrameEtPNS_6JValueE+382)\n"
" #61 pc 0022e935 libartd.so "
"(_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_"
"6JValueEb+244)\n"
" #62 pc 0022f71d libartd.so "
"(_ZN3art11interpreter30EnterInterpreterFromEntryPointEPNS_6ThreadERKNS_"
"20CodeItemDataAccessorEPNS_11ShadowFrameE+128)\n"
" #63 pc 00442865 libartd.so (artQuickToInterpreterBridge+796)\n"
" #64 pc 004666ff libartd.so (art_quick_to_interpreter_bridge+30)\n"
" #65 pc 00462175 libartd.so (art_quick_invoke_stub_internal+68)\n"
" #66 pc 0046722f libartd.so (art_quick_invoke_static_stub+226)\n"
" #67 pc 000bf7bb libartd.so "
"(_ZN3art9ArtMethod6InvokeEPNS_6ThreadEPjjPNS_6JValueEPKc+882)\n"
" #68 pc 003b292d libartd.so "
"(_ZN3artL18InvokeWithArgArrayERKNS_33ScopedObjectAccessAlreadyRunnableEPNS_9ArtMethodEPNS_"
"8ArgArrayEPNS_6JValueEPKc+52)\n"
" #69 pc 003b26c3 libartd.so "
"(_ZN3art17InvokeWithVarArgsERKNS_33ScopedObjectAccessAlreadyRunnableEP8_jobjectP10_"
"jmethodIDSt9__va_list+210)\n"
" #70 pc 00308411 libartd.so "
"(_ZN3art3JNI21CallStaticVoidMethodVEP7_JNIEnvP7_jclassP10_jmethodIDSt9__va_list+76)\n"
" #71 pc 000e6a9f libartd.so "
"(_ZN3art8CheckJNI11CallMethodVEPKcP7_JNIEnvP8_jobjectP7_jclassP10_jmethodIDSt9__va_listNS_"
"9Primitive4TypeENS_10InvokeTypeE+1486)\n"
" #72 pc 000e19b9 libartd.so "
"(_ZN3art8CheckJNI21CallStaticVoidMethodVEP7_JNIEnvP7_jclassP10_jmethodIDSt9__va_list+40)\n"
" #73 pc 0000159f dalvikvm32 "
"(_ZN7_JNIEnv20CallStaticVoidMethodEP7_jclassP10_jmethodIDz+30)\n"
" #74 pc 00001349 dalvikvm32 (main+896)\n"
" #75 pc 000850c9 libc.so\n",
frame_info);
}
} // namespace unwindstack

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libunwindstack/tests/files/offline/jit_debug_arm32/maps.txt Normal file
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@ -0,0 +1,8 @@
ab0d3000-ab0d8000 r-xp 0 00:00 0 dalvikvm32
dfe4e000-dfe7b000 r-xp 0 00:00 0 libarttestd.so
e0447000-e0448000 r-xp 2000 00:00 0 137-cfi.odex
e2796000-e4796000 r-xp 0 00:00 0 anonymous:e2796000
e648e000-e690f000 r-xp 00000000 00:00 0 libart.so
ed306000-ed801000 r-xp 0 00:00 0 libartd.so
eda88000-edb23000 r-xp 0 00:00 0 libc.so
ede4e000-ede50000 r-xp 0 00:00 0 anonymous:ede4e000

16
libunwindstack/tests/files/offline/jit_debug_arm32/regs.txt Normal file
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@ -0,0 +1,16 @@
r0: dfe7c0f8
r1: 0
r2: 0
r3: 40000000
r4: e051ffb4
r5: 0
r6: e051ffc0
r7: ede514e8
r8: ff85d1a8
r9: ed9210c0
r10: 58
r11: 0
ip: edb26d04
sp: ff85d180
lr: edaff5af
pc: dfe66a5e

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