[cfe-dev] exc_bad_instruction on arm
Anton Smirnov
dev at antonsmirnov.name
Wed Sep 17 00:43:07 PDT 2014
i've changed lli arguments to the next (instead of default):
return llvm_interpret(
InputFile,
std::vector<std::string>(),
false, // ForceInterpreter
false, // UseMCJIT
false, // DebugIR
false, // RemoteMCJIT
"", // MCJITRemoteProcess
' ', // OptLevel
std::string("thumbv7-apple-ios7.1.0"), // TargetTriple
std::string("thumb"), // MArch
std::string("cortex-a8"), // MCPU
std::vector<std::string>(), // MAttrs
"main", // EntryFunc
std::vector<std::string>(), // ExtraModules
std::string(), // FakeArgv0
false, // DisableCoreFiles
false, // NoLazyCompilation
Reloc::PIC_, // RelocModel
CodeModel::JITDefault, // CMModel
true, // GenerateSoftFloatCalls
FloatABI::Soft, // FloatABIForCalls
false, // EmitJitDebugInfo
false, // EmitJitDebugInfoToDisk
envp // envp
);
Now i'm having:
*Unhandled instruction encoding format!*
UNREACHABLE executed at
/Users/asmirnov/Documents/dev/src/llvm_34_ios/lib/Target/ARM/ARMCodeEmitter.cpp:547!
0 iCode 0x01f7e591 llvm::sys::PrintStackTrace(__sFILE*)
+ 44
1 iCode 0x01f7e807 PrintStackTraceSignalHandler(void*)
+ 26
2 iCode 0x01f7eb09 SignalHandler(int) + 356
3 libsystem_platform.dylib 0x397e171b _sigtramp + 34
4 libsystem_pthread.dylib 0x397e67b7 pthread_kill + 58
5 iCode 0x01f7e81f raise + 18
6 iCode 0x01f7e8b5 abort + 16
7 iCode 0x01f6d395 llvm::SmallVector<char,
64u>::SmallVector() + 0
8 iCode 0x01410bd5 (anonymous
namespace)::ARMCodeEmitter::emitInstruction(llvm::MachineInstr const&) +
1652
9 iCode 0x01410521 (anonymous
namespace)::ARMCodeEmitter::runOnMachineFunction(llvm::MachineFunction&) +
556
10 iCode 0x016788f5
llvm::MachineFunctionPass::runOnFunction(llvm::Function&) + 72
11 iCode 0x018749ad
llvm::FPPassManager::runOnFunction(llvm::Function&) + 252
12 iCode 0x018744ab
llvm::legacy::FunctionPassManagerImpl::run(llvm::Function&) + 78
13 iCode 0x01874455
llvm::legacy::FunctionPassManager::run(llvm::Function&) + 200
14 iCode 0x01a36d9d
llvm::JIT::jitTheFunction(llvm::Function*, llvm::MutexGuard const&) + 44
15 iCode 0x01a36c31
llvm::JIT::runJITOnFunctionUnlocked(llvm::Function*, llvm::MutexGuard
const&) + 112
16 iCode 0x01a36f7f
llvm::JIT::getPointerToFunction(llvm::Function*) + 450
17 iCode 0x000da28d
llvm_interpret(std::__1::basic_string<char, std::__1::char_traits<char>,
std::__1::allocator<char> >, std::__1::vector<std::__1::basic_string<char,
std::__1::char_traits<char>, std::__1::allocator<char> >,
std::__1::allocator<std::__1::basic_string<char,
std::__1::char_traits<char>, std::__1::allocator<char> > > >, bool, bool,
bool, bool, std::__1::basic_string<char, std::__1::char_traits<char>,
std::__1::allocator<char> >, char, std::__1::basic_string<char,
std::__1::char_traits<char>, std::__1::allocator<char> >,
std::__1::basic_string<char, std::__1::char_traits<char>,
std::__1::allocator<char> >, std::__1::basic_string<char,
std::__1::char_traits<char>, std::__1::allocator<char> >,
std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>,
std::__1::allocator<char> >,
std::__1::allocator<std::__1::basic_string<char,
std::__1::char_traits<char>, std::__1::allocator<char> > > >,
std::__1::basic_string<char, std::__1::char_traits<char>,
std::__1::allocator<char> >, std::__1::vector<std::__1::basic_string<char,
std::__1::char_traits<char>, std::__1::allocator<char> >,
std::__1::allocator<std::__1::basic_string<char,
std::__1::char_traits<char>, std::__1::allocator<char> > > >,
std::__1::basic_string<char, std::__1::char_traits<char>,
std::__1::allocator<char> >, bool, bool, llvm::Reloc::Model,
llvm::CodeModel::Model, bool, llvm::FloatABI::ABIType, bool, bool, char*) +
4364
18 iCode 0x000db8c7 llvm_interpret(char const*, char*) +
1346
19 iCode 0x000dbb83 llvm_interpret(char const*, char*,
char const*) + 134
20 iCode 0x000b0973 -[ASMainController didClickCompile:]
+ 2446
21 UIKit 0x30f656a7 <redacted> + 90
22 UIKit 0x310cc56d <redacted> + 120
23 UIKit 0x30f656a7 <redacted> + 90
24 UIKit 0x30f65643 <redacted> + 38
25 UIKit 0x30f65613 <redacted> + 46
26 UIKit 0x30f50d5b <redacted> + 374
27 UIKit 0x30f6505b <redacted> + 594
28 UIKit 0x30f28521 <redacted> + 5528
29 CoreFoundation 0x2e6c9ff9 <redacted> + 20
30 CoreFoundation 0x2e6c7987 <redacted> + 286
31 CoreFoundation 0x2e6c7cd3 <redacted> + 738
32 CoreFoundation 0x2e632729 CFRunLoopRunSpecific + 524
33 CoreFoundation 0x2e63250b CFRunLoopRunInMode + 106
34 GraphicsServices 0x3355e6d3 GSEventRunModal + 138
35 UIKit 0x30f93871 UIApplicationMain + 1136
36 iCode 0x000d0829 main + 116
37 libdyld.dylib 0x396c7ab7 <redacted> + 2
Stack dump:
0. Running pass 'ARM Machine Code Emitter' on function '@main'
0 iCode 0x01f7e591 llvm::sys::PrintStackTrace(__sFILE*)
+ 44
1 iCode 0x01f7e807 PrintStackTraceSignalHandler(void*)
+ 26
2 iCode 0x01f7eb09 SignalHandler(int) + 356
3 libsystem_platform.dylib 0x397e171b _sigtramp + 34
4 libsystem_pthread.dylib 0x397e67b7 pthread_kill + 58
5 iCode 0x01f7e81f raise + 18
6 iCode 0x01f7e8b5 abort + 16
7 iCode 0x01f6d395 llvm::SmallVector<char,
64u>::SmallVector() + 0
8 iCode 0x01410bd5 (anonymous
namespace)::ARMCodeEmitter::emitInstruction(llvm::MachineInstr const&) +
1652
9 iCode 0x01410521 (anonymous
namespace)::ARMCodeEmitter::runOnMachineFunction(llvm::MachineFunction&) +
556
10 iCode 0x016788f5
llvm::MachineFunctionPass::runOnFunction(llvm::Function&) + 72
11 iCode 0x018749ad
llvm::FPPassManager::runOnFunction(llvm::Function&) + 252
12 iCode 0x018744ab
llvm::legacy::FunctionPassManagerImpl::run(llvm::Function&) + 78
13 iCode 0x01874455
llvm::legacy::FunctionPassManager::run(llvm::Function&) + 200
14 iCode 0x01a36d9d
llvm::JIT::jitTheFunction(llvm::Function*, llvm::MutexGuard const&) + 44
15 iCode 0x01a36c31
llvm::JIT::runJITOnFunctionUnlocked(llvm::Function*, llvm::MutexGuard
const&) + 112
16 iCode 0x01a36f7f
llvm::JIT::getPointerToFunction(llvm::Function*) + 450
17 iCode 0x000da28d
llvm_interpret(std::__1::basic_string<char, std::__1::char_traits<char>,
std::__1::allocator<char> >, std::__1::vector<std::__1::basic_string<char,
std::__1::char_traits<char>, std::__1::allocator<char> >,
std::__1::allocator<std::__1::basic_string<char,
std::__1::char_traits<char>, std::__1::allocator<char> > > >, bool, bool,
bool, bool, std::__1::basic_string<char, std::__1::char_traits<char>,
std::__1::allocator<char> >, char, std::__1::basic_string<char,
std::__1::char_traits<char>, std::__1::allocator<char> >,
std::__1::basic_string<char, std::__1::char_traits<char>,
std::__1::allocator<char> >, std::__1::basic_string<char,
std::__1::char_traits<char>, std::__1::allocator<char> >,
std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>,
std::__1::allocator<char> >,
std::__1::allocator<std::__1::basic_string<char,
std::__1::char_traits<char>, std::__1::allocator<char> > > >,
std::__1::basic_string<char, std::__1::char_traits<char>,
std::__1::allocator<char> >, std::__1::vector<std::__1::basic_string<char,
std::__1::char_traits<char>, std::__1::allocator<char> >,
std::__1::allocator<std::__1::basic_string<char,
std::__1::char_traits<char>, std::__1::allocator<char> > > >,
std::__1::basic_string<char, std::__1::char_traits<char>,
std::__1::allocator<char> >, bool, bool, llvm::Reloc::Model,
llvm::CodeModel::Model, bool, llvm::FloatABI::ABIType, bool, bool, char*) +
4364
18 iCode 0x000db8c7 llvm_interpret(char const*, char*) +
1346
19 iCode 0x000dbb83 llvm_interpret(char const*, char*,
char const*) + 134
this seems to be different arguments between compile and interpret or
bitcode was generated incorrectly?
2014-09-17 11:58 GMT+06:00 Anton Smirnov <dev at antonsmirnov.name>:
> correction: triple for compilation was "thumbv7-apple-ios7.1.0" - see
> compiled .ll code
>
> 2014-09-17 11:56 GMT+06:00 Anton Smirnov <dev at antonsmirnov.name>:
>
>> hi.
>>
>> i'm trying to compile (seems to be sucessfully) and execute code on arm
>> (ios apple ipad air) and i'm having *exc_bad_instruction
>> (code=exc_arm_undefined, subcode=0x8458b00)* exception.
>>
>> source code:
>>
>> int main(int count, const char **args) {
>> const char *c = "hello world";
>> return 1 + 5;
>> }
>>
>> generate bit-code cmd:
>>
>> const char *cmd[] = {
>> "clang",
>> "-cc1",
>> "-triple",
>> "arm-apple-macosx10.10.0", //"thumbv7-apple-ios7.1.0",
>> //"arm-apple-macosx10.10.0", // "i386-apple-macosx10.10.0",
>> "-emit-llvm",
>> "-disable-free",
>> "-main-file-name",
>> [cppShortFile UTF8String],
>> "-mrelocation-model",
>> "pic",
>> "-pic-level",
>> "2",
>> "-mdisable-fp-elim",
>> "-masm-verbose",
>> "-target-cpu",
>> "cortex-a8", //"yonah",
>> "-target-linker-version",
>> "236.3",
>> "-v",
>> "-coverage-file",
>> [llFile UTF8String],
>> //"/private/var/mobile/Applications/175ECA7F-3175-4AC9-971C-85272F5492C4/tmp/hw.ll"
>> "-resource-dir",
>> [[[ASPathHolder sharedHolder] tempFolder] UTF8String],
>> "-stdlib=libc++",
>> "-fdeprecated-macro",
>> "-fdebug-compilation-dir",
>> [[[ASPathHolder sharedHolder] tempFolder] UTF8String],
>> "-ferror-limit",
>> "19",
>> "-fmessage-length",
>> "0",
>> //"-I",
>> // [[[[ASPathHolder sharedHolder] includeFolder]
>> stringByAppendingString:@"/libc"] UTF8String], // libc include folder
>> //"-I",
>> // [[[[ASPathHolder sharedHolder] includeFolder]
>> stringByAppendingString:@"/libcxx"] UTF8String], // libc++ include folder
>> "-stack-protector",
>> "1",
>> "-mstackrealign",
>> //"-fblocks", // Apple "blocks" extensions
>> //"-fobjc-runtime=macosx-fragile-10.10.0", // object-c runtime
>> //"-fobjc-subscripting-legacy-runtime",
>> "-fencode-extended-block-signature",
>> "-fcxx-exceptions",
>> "-fexceptions",
>> "-fdiagnostics-show-option",
>> "-vectorize-slp",
>> "-target-feature",
>> "+soft-float-abi",
>> "-target-abi",
>> "apcs-gnu",
>> "-mfloat-abi",
>> "soft",
>> "-o",
>> [llFile UTF8String], //
>> /private/var/mobile/Applications/175ECA7F-3175-4AC9-971C-85272F5492C4/tmp/hw.ll
>> "-x",
>> "c++",
>> [cppFile UTF8String]
>> //"/private/var/mobile/Applications/175ECA7F-3175-4AC9-971C-85272F5492C4/tmp/hw.cpp"
>> };
>>
>> i'm not sure i'm using correct triple, target cpu and target features but
>> i used xcodes ones (when targeting ios device).
>>
>> compilation was successfull and i'm having .ll file:
>> ; ModuleID =
>> '/var/mobile/Applications/53D60D11-DF93-4129-AD97-B96424D165B5/Documents/projects/calc/calc.cpp'
>> target datalayout =
>> "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:32:64-v128:32:128-a0:0:32-n32-S32"
>> target triple = "thumbv7-apple-ios7.1.0"
>>
>> @.str = private unnamed_addr constant [12 x i8] c"hello world\00", align 1
>>
>> ; Function Attrs: nounwind ssp
>> define i32 @main(i32 %count, i8** %args) #0 {
>> entry:
>> %retval = alloca i32, align 4
>> %count.addr = alloca i32, align 4
>> %args.addr = alloca i8**, align 4
>> %c = alloca i8*, align 4
>> store i32 0, i32* %retval
>> store i32 %count, i32* %count.addr, align 4
>> store i8** %args, i8*** %args.addr, align 4
>> store i8* getelementptr inbounds ([12 x i8]* @.str, i32 0, i32 0), i8**
>> %c, align 4
>> ret i32 6
>> }
>>
>> attributes #0 = { nounwind ssp "less-precise-fpmad"="false"
>> "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf"
>> "no-infs-fp-math"="false" "no-nans-fp-math"="false"
>> "stack-protector-buffer-size"="8" "unsafe-fp-math"="false"
>> "use-soft-float"="false" }
>>
>> !llvm.ident = !{!0}
>>
>> !0 = metadata !{metadata !"clang version 3.4 (tags/RELEASE_34/final
>> 212412)"}
>>
>> is it correct or can you see obvious errors?
>>
>> then i'm trying to interpret .ll file.
>> i've copied lli tool source code and launching it from my ios app
>> (created static lib instead of executable) with default arguments (like
>> triple and cpu and so on - this can probably be wrong!).
>>
>> Then i'm having exception in ExecutionEngine.cpp in line:
>>
>> return runFunction(Fn, GVArgs).IntVal.getZExtValue();
>>
>> *exc_bad_instruction (code=exc_arm_undefined, subcode=0x8458b00)*
>>
>> Any thoughts? What does this subcode mean?
>>
>> Any help is highly appreciated.
>>
>> Regards, Anton.
>>
>
>
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