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llvm/lldb/source/lldb.cpp
Kuba Brecka afdf842b3f LLDB AddressSanitizer instrumentation runtime plugin, breakpint on error and report data extraction 
Reviewed at http://reviews.llvm.org/D5592

This patch gives LLDB some ability to interact with AddressSanitizer runtime library, on top of what we already have (historical memory stack traces provided by ASan). Namely, that's the ability to stop on an error caught by ASan, and access the report information that are associated with it. The report information is also exposed into SB API.

More precisely this patch...

adds a new plugin type, InstrumentationRuntime, which should serve as a generic superclass for other instrumentation runtime libraries, these plugins get notified when modules are loaded, so they get a chance to "activate" when a specific dynamic library is loaded
an instance of this plugin type, AddressSanitizerRuntime, which activates itself when it sees the ASan dynamic library or founds ASan statically linked in the executable
adds a collection of these plugins into the Process class
AddressSanitizerRuntime sets an internal breakpoint on __asan::AsanDie(), and when this breakpoint gets hit, it retrieves the report information from ASan
this breakpoint is then exposed as a new StopReason, eStopReasonInstrumentation, with a new StopInfo subclass, InstrumentationRuntimeStopInfo
the StopInfo superclass is extended with a m_extended_info field (it's a StructuredData::ObjectSP), that can hold arbitrary JSON-like data, which is the way the new plugin provides the report data
the "thread info" command now accepts a "-s" flag that prints out the JSON data of a stop reason (same way the "-j" flag works now)
SBThread has a new API, GetStopReasonExtendedInfoAsJSON, which dumps the JSON string into a SBStream
adds a test case for all of this
I plan to also get rid of the original ASan plugin (memory history stack traces) and use an instance of AddressSanitizerRuntime for that purpose.

Kuba

llvm-svn: 219546
2014-10-10 23:43:03 +00:00

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//===-- lldb.cpp ------------------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "lldb/lldb-python.h"
#include "lldb/lldb-private.h"
#include "lldb/lldb-private-log.h"
#include "lldb/Core/ArchSpec.h"
#include "lldb/Core/Debugger.h"
#include "lldb/Core/Log.h"
#include "lldb/Core/PluginManager.h"
#include "lldb/Core/RegularExpression.h"
#include "lldb/Core/Timer.h"
#include "lldb/Host/Host.h"
#include "lldb/Host/HostInfo.h"
#include "lldb/Host/Mutex.h"
#include "lldb/Interpreter/ScriptInterpreterPython.h"
#include "lldb/Target/Target.h"
#include "lldb/Target/Thread.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/TargetSelect.h"
#include "Plugins/ABI/MacOSX-i386/ABIMacOSX_i386.h"
#include "Plugins/ABI/MacOSX-arm/ABIMacOSX_arm.h"
#include "Plugins/ABI/MacOSX-arm64/ABIMacOSX_arm64.h"
#include "Plugins/ABI/SysV-x86_64/ABISysV_x86_64.h"
#include "Plugins/Disassembler/llvm/DisassemblerLLVMC.h"
#include "Plugins/DynamicLoader/POSIX-DYLD/DynamicLoaderPOSIXDYLD.h"
#include "Plugins/Instruction/ARM/EmulateInstructionARM.h"
#include "Plugins/Instruction/ARM64/EmulateInstructionARM64.h"
#include "Plugins/SymbolVendor/MacOSX/SymbolVendorMacOSX.h"
#include "Plugins/JITLoader/GDB/JITLoaderGDB.h"
#include "Plugins/LanguageRuntime/CPlusPlus/ItaniumABI/ItaniumABILanguageRuntime.h"
#include "Plugins/ObjectContainer/BSD-Archive/ObjectContainerBSDArchive.h"
#include "Plugins/ObjectFile/ELF/ObjectFileELF.h"
#include "Plugins/ObjectFile/PECOFF/ObjectFilePECOFF.h"
#include "Plugins/Platform/FreeBSD/PlatformFreeBSD.h"
#include "Plugins/Platform/Linux/PlatformLinux.h"
#include "Plugins/Platform/POSIX/PlatformPOSIX.h"
#include "Plugins/Platform/Windows/PlatformWindows.h"
#include "Plugins/Platform/Kalimba/PlatformKalimba.h"
#include "Plugins/Process/elf-core/ProcessElfCore.h"
#include "Plugins/SymbolVendor/MacOSX/SymbolVendorMacOSX.h"
#include "Plugins/SymbolVendor/ELF/SymbolVendorELF.h"
#include "Plugins/SymbolFile/DWARF/SymbolFileDWARF.h"
#include "Plugins/SymbolFile/DWARF/SymbolFileDWARFDebugMap.h"
#include "Plugins/SymbolFile/Symtab/SymbolFileSymtab.h"
#include "Plugins/UnwindAssembly/x86/UnwindAssembly-x86.h"
#include "Plugins/UnwindAssembly/InstEmulation/UnwindAssemblyInstEmulation.h"
#ifndef LLDB_DISABLE_PYTHON
#include "Plugins/OperatingSystem/Python/OperatingSystemPython.h"
#endif
#if defined (__APPLE__)
#include "Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOSXDYLD.h"
#include "Plugins/DynamicLoader/Darwin-Kernel/DynamicLoaderDarwinKernel.h"
#include "Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV1.h"
#include "Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV2.h"
#include "Plugins/ObjectContainer/Universal-Mach-O/ObjectContainerUniversalMachO.h"
#include "Plugins/ObjectFile/Mach-O/ObjectFileMachO.h"
#include "Plugins/Process/MacOSX-Kernel/ProcessKDP.h"
#include "Plugins/Platform/MacOSX/PlatformMacOSX.h"
#include "Plugins/Platform/MacOSX/PlatformRemoteiOS.h"
#include "Plugins/Platform/MacOSX/PlatformDarwinKernel.h"
#include "Plugins/Platform/MacOSX/PlatformiOSSimulator.h"
#include "Plugins/SystemRuntime/MacOSX/SystemRuntimeMacOSX.h"
#endif
#include "Plugins/Process/mach-core/ProcessMachCore.h"
#if defined (__linux__)
#include "Plugins/Process/Linux/ProcessLinux.h"
#endif
#if defined (_WIN32)
#include "Plugins/Process/Windows/ProcessWindows.h"
#endif
#if defined (__FreeBSD__)
#include "Plugins/Process/POSIX/ProcessPOSIX.h"
#include "Plugins/Process/FreeBSD/ProcessFreeBSD.h"
#endif
#include "Plugins/Platform/gdb-server/PlatformRemoteGDBServer.h"
#include "Plugins/Process/gdb-remote/ProcessGDBRemote.h"
#include "Plugins/DynamicLoader/Static/DynamicLoaderStatic.h"
#include "Plugins/MemoryHistory/asan/MemoryHistoryASan.h"
#include "Plugins/InstrumentationRuntime/AddressSanitizer/AddressSanitizerRuntime.h"
using namespace lldb;
using namespace lldb_private;
static void fatal_error_handler(void *user_data, const std::string& reason,
bool gen_crash_diag) {
Host::SetCrashDescription(reason.c_str());
::abort();
}
void
lldb_private::Initialize ()
{
// Make sure we inialize only once
static Mutex g_inited_mutex(Mutex::eMutexTypeRecursive);
static bool g_inited = false;
Mutex::Locker locker(g_inited_mutex);
if (!g_inited)
{
g_inited = true;
Log::Initialize();
HostInfo::Initialize();
Timer::Initialize ();
Timer scoped_timer (__PRETTY_FUNCTION__, __PRETTY_FUNCTION__);
// Initialize LLVM and Clang
llvm::InitializeAllTargets();
llvm::InitializeAllAsmPrinters();
llvm::InitializeAllTargetMCs();
llvm::InitializeAllDisassemblers();
llvm::install_fatal_error_handler(fatal_error_handler, 0);
// Initialize plug-ins
ABIMacOSX_i386::Initialize();
ABIMacOSX_arm::Initialize();
ABIMacOSX_arm64::Initialize();
ABISysV_x86_64::Initialize();
DisassemblerLLVMC::Initialize();
ObjectContainerBSDArchive::Initialize();
ObjectFileELF::Initialize();
SymbolVendorELF::Initialize();
SymbolFileDWARF::Initialize();
SymbolFileSymtab::Initialize();
UnwindAssemblyInstEmulation::Initialize();
UnwindAssembly_x86::Initialize();
EmulateInstructionARM::Initialize ();
EmulateInstructionARM64::Initialize ();
ObjectFilePECOFF::Initialize ();
DynamicLoaderPOSIXDYLD::Initialize ();
PlatformFreeBSD::Initialize();
PlatformLinux::Initialize();
PlatformWindows::Initialize();
PlatformKalimba::Initialize();
SymbolFileDWARFDebugMap::Initialize();
ItaniumABILanguageRuntime::Initialize();
#ifndef LLDB_DISABLE_PYTHON
ScriptInterpreterPython::InitializePrivate();
OperatingSystemPython::Initialize();
#endif
JITLoaderGDB::Initialize();
ProcessElfCore::Initialize();
MemoryHistoryASan::Initialize();
AddressSanitizerRuntime::Initialize();
#if defined (__APPLE__)
//----------------------------------------------------------------------
// Apple/Darwin hosted plugins
//----------------------------------------------------------------------
DynamicLoaderMacOSXDYLD::Initialize();
DynamicLoaderDarwinKernel::Initialize();
AppleObjCRuntimeV2::Initialize();
AppleObjCRuntimeV1::Initialize();
ObjectContainerUniversalMachO::Initialize();
ObjectFileMachO::Initialize();
ProcessKDP::Initialize();
ProcessMachCore::Initialize();
SymbolVendorMacOSX::Initialize();
PlatformDarwinKernel::Initialize();
PlatformRemoteiOS::Initialize();
PlatformMacOSX::Initialize();
PlatformiOSSimulator::Initialize();
SystemRuntimeMacOSX::Initialize();
#endif
#if defined (__linux__)
//----------------------------------------------------------------------
// Linux hosted plugins
//----------------------------------------------------------------------
ProcessLinux::Initialize();
#endif
#if defined(_WIN32)
ProcessWindows::Initialize();
#endif
#if defined (__FreeBSD__)
ProcessFreeBSD::Initialize();
#endif
//----------------------------------------------------------------------
// Platform agnostic plugins
//----------------------------------------------------------------------
PlatformRemoteGDBServer::Initialize ();
ProcessGDBRemote::Initialize();
DynamicLoaderStatic::Initialize();
// Scan for any system or user LLDB plug-ins
PluginManager::Initialize();
// The process settings need to know about installed plug-ins, so the Settings must be initialized
// AFTER PluginManager::Initialize is called.
Debugger::SettingsInitialize();
}
}
void
lldb_private::WillTerminate()
{
Host::WillTerminate();
}
void
lldb_private::Terminate ()
{
Timer scoped_timer (__PRETTY_FUNCTION__, __PRETTY_FUNCTION__);
// Terminate and unload and loaded system or user LLDB plug-ins
PluginManager::Terminate();
ABIMacOSX_i386::Terminate();
ABIMacOSX_arm::Terminate();
ABIMacOSX_arm64::Terminate();
ABISysV_x86_64::Terminate();
DisassemblerLLVMC::Terminate();
ObjectContainerBSDArchive::Terminate();
ObjectFileELF::Terminate();
SymbolVendorELF::Terminate();
SymbolFileDWARF::Terminate();
SymbolFileSymtab::Terminate();
UnwindAssembly_x86::Terminate();
UnwindAssemblyInstEmulation::Terminate();
EmulateInstructionARM::Terminate ();
EmulateInstructionARM64::Terminate ();
ObjectFilePECOFF::Terminate ();
DynamicLoaderPOSIXDYLD::Terminate ();
PlatformFreeBSD::Terminate();
PlatformLinux::Terminate();
PlatformWindows::Terminate();
PlatformKalimba::Terminate();
SymbolFileDWARFDebugMap::Terminate();
ItaniumABILanguageRuntime::Terminate();
#ifndef LLDB_DISABLE_PYTHON
OperatingSystemPython::Terminate();
#endif
JITLoaderGDB::Terminate();
ProcessElfCore::Terminate();
MemoryHistoryASan::Terminate();
AddressSanitizerRuntime::Terminate();
#if defined (__APPLE__)
DynamicLoaderMacOSXDYLD::Terminate();
DynamicLoaderDarwinKernel::Terminate();
AppleObjCRuntimeV2::Terminate();
AppleObjCRuntimeV1::Terminate();
ObjectContainerUniversalMachO::Terminate();
ObjectFileMachO::Terminate();
ProcessMachCore::Terminate();
ProcessKDP::Terminate();
SymbolVendorMacOSX::Terminate();
PlatformMacOSX::Terminate();
PlatformDarwinKernel::Terminate();
PlatformRemoteiOS::Terminate();
PlatformiOSSimulator::Terminate();
SystemRuntimeMacOSX::Terminate();
#endif
Debugger::SettingsTerminate ();
#if defined (__linux__)
ProcessLinux::Terminate();
#endif
#if defined (__FreeBSD__)
ProcessFreeBSD::Terminate();
#endif
ProcessGDBRemote::Terminate();
DynamicLoaderStatic::Terminate();
Log::Terminate();
}
#if defined (__APPLE__)
extern "C" const unsigned char liblldb_coreVersionString[];
#else
#include "clang/Basic/Version.h"
static const char *
GetLLDBRevision()
{
#ifdef LLDB_REVISION
return LLDB_REVISION;
#else
return NULL;
#endif
}
static const char *
GetLLDBRepository()
{
#ifdef LLDB_REPOSITORY
return LLDB_REPOSITORY;
#else
return NULL;
#endif
}
#endif
const char *
lldb_private::GetVersion ()
{
#if defined (__APPLE__)
static char g_version_string[32];
if (g_version_string[0] == '\0')
{
const char *version_string = ::strstr ((const char *)liblldb_coreVersionString, "PROJECT:");
if (version_string)
version_string += sizeof("PROJECT:") - 1;
else
version_string = "unknown";
const char *newline_loc = strchr(version_string, '\n');
size_t version_len = sizeof(g_version_string);
if (newline_loc &&
(newline_loc - version_string < static_cast<ptrdiff_t>(version_len)))
version_len = newline_loc - version_string;
::strncpy(g_version_string, version_string, version_len);
}
return g_version_string;
#else
// On Linux/FreeBSD/Windows, report a version number in the same style as the clang tool.
static std::string g_version_str;
if (g_version_str.empty())
{
g_version_str += "lldb version ";
g_version_str += CLANG_VERSION_STRING;
const char * lldb_repo = GetLLDBRepository();
if (lldb_repo)
{
g_version_str += " (";
g_version_str += lldb_repo;
}
const char *lldb_rev = GetLLDBRevision();
if (lldb_rev)
{
g_version_str += " revision ";
g_version_str += lldb_rev;
}
std::string clang_rev (clang::getClangRevision());
if (clang_rev.length() > 0)
{
g_version_str += " clang revision ";
g_version_str += clang_rev;
}
std::string llvm_rev (clang::getLLVMRevision());
if (llvm_rev.length() > 0)
{
g_version_str += " llvm revision ";
g_version_str += llvm_rev;
}
if (lldb_repo)
g_version_str += ")";
}
return g_version_str.c_str();
#endif
}
const char *
lldb_private::GetVoteAsCString (Vote vote)
{
switch (vote)
{
case eVoteNo: return "no";
case eVoteNoOpinion: return "no opinion";
case eVoteYes: return "yes";
}
return "invalid";
}
const char *
lldb_private::GetSectionTypeAsCString (SectionType sect_type)
{
switch (sect_type)
{
case eSectionTypeInvalid: return "invalid";
case eSectionTypeCode: return "code";
case eSectionTypeContainer: return "container";
case eSectionTypeData: return "data";
case eSectionTypeDataCString: return "data-cstr";
case eSectionTypeDataCStringPointers: return "data-cstr-ptr";
case eSectionTypeDataSymbolAddress: return "data-symbol-addr";
case eSectionTypeData4: return "data-4-byte";
case eSectionTypeData8: return "data-8-byte";
case eSectionTypeData16: return "data-16-byte";
case eSectionTypeDataPointers: return "data-ptrs";
case eSectionTypeDebug: return "debug";
case eSectionTypeZeroFill: return "zero-fill";
case eSectionTypeDataObjCMessageRefs: return "objc-message-refs";
case eSectionTypeDataObjCCFStrings: return "objc-cfstrings";
case eSectionTypeDWARFDebugAbbrev: return "dwarf-abbrev";
case eSectionTypeDWARFDebugAranges: return "dwarf-aranges";
case eSectionTypeDWARFDebugFrame: return "dwarf-frame";
case eSectionTypeDWARFDebugInfo: return "dwarf-info";
case eSectionTypeDWARFDebugLine: return "dwarf-line";
case eSectionTypeDWARFDebugLoc: return "dwarf-loc";
case eSectionTypeDWARFDebugMacInfo: return "dwarf-macinfo";
case eSectionTypeDWARFDebugPubNames: return "dwarf-pubnames";
case eSectionTypeDWARFDebugPubTypes: return "dwarf-pubtypes";
case eSectionTypeDWARFDebugRanges: return "dwarf-ranges";
case eSectionTypeDWARFDebugStr: return "dwarf-str";
case eSectionTypeELFSymbolTable: return "elf-symbol-table";
case eSectionTypeELFDynamicSymbols: return "elf-dynamic-symbols";
case eSectionTypeELFRelocationEntries: return "elf-relocation-entries";
case eSectionTypeELFDynamicLinkInfo: return "elf-dynamic-link-info";
case eSectionTypeDWARFAppleNames: return "apple-names";
case eSectionTypeDWARFAppleTypes: return "apple-types";
case eSectionTypeDWARFAppleNamespaces: return "apple-namespaces";
case eSectionTypeDWARFAppleObjC: return "apple-objc";
case eSectionTypeEHFrame: return "eh-frame";
case eSectionTypeOther: return "regular";
}
return "unknown";
}
bool
lldb_private::NameMatches (const char *name,
NameMatchType match_type,
const char *match)
{
if (match_type == eNameMatchIgnore)
return true;
if (name == match)
return true;
if (name && match)
{
llvm::StringRef name_sref(name);
llvm::StringRef match_sref(match);
switch (match_type)
{
case eNameMatchIgnore: // This case cannot occur: tested before
return true;
case eNameMatchEquals: return name_sref == match_sref;
case eNameMatchContains: return name_sref.find (match_sref) != llvm::StringRef::npos;
case eNameMatchStartsWith: return name_sref.startswith (match_sref);
case eNameMatchEndsWith: return name_sref.endswith (match_sref);
case eNameMatchRegularExpression:
{
RegularExpression regex (match);
return regex.Execute (name);
}
break;
}
}
return false;
}
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