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📄 ABI.cpp(9.36 KB)
📄 AssertFrameRecognizer.cpp(5.4 KB)
📄 ExecutionContext.cpp(18.19 KB)
📄 InstrumentationRuntime.cpp(2.38 KB)
📄 InstrumentationRuntimeStopInfo.cpp(1.2 KB)
📄 JITLoader.cpp(1.07 KB)
📄 JITLoaderList.cpp(1.94 KB)
📄 Language.cpp(12.97 KB)
📄 LanguageRuntime.cpp(9.71 KB)
📄 Memory.cpp(15.12 KB)
📄 MemoryHistory.cpp(943 B)
📄 MemoryRegionInfo.cpp(1.55 KB)
📄 ModuleCache.cpp(11.87 KB)
📄 OperatingSystem.cpp(1.74 KB)
📄 PathMappingList.cpp(9.73 KB)
📄 Platform.cpp(66.82 KB)
📄 Process.cpp(221.69 KB)
📄 Queue.cpp(2.52 KB)
📄 QueueItem.cpp(3 KB)
📄 QueueList.cpp(1.68 KB)
📄 RegisterContext.cpp(15.76 KB)
📄 RegisterContextUnwind.cpp(86.86 KB)
📄 RegisterNumber.cpp(3.34 KB)
📄 RemoteAwarePlatform.cpp(16.06 KB)
📄 SectionLoadHistory.cpp(6.39 KB)
📄 SectionLoadList.cpp(9.57 KB)
📄 StackFrame.cpp(70.8 KB)
📄 StackFrameList.cpp(34.82 KB)
📄 StackFrameRecognizer.cpp(7.27 KB)
📄 StackID.cpp(3.39 KB)
📄 StopInfo.cpp(44.17 KB)
📄 StructuredDataPlugin.cpp(2.35 KB)
📄 SystemRuntime.cpp(1.54 KB)
📄 Target.cpp(146.79 KB)
📄 TargetList.cpp(22.59 KB)
📄 TargetProperties.td(15.71 KB)
📄 Thread.cpp(70.22 KB)
📄 ThreadCollection.cpp(2.18 KB)
📄 ThreadList.cpp(24.9 KB)
📄 ThreadPlan.cpp(9.54 KB)
📄 ThreadPlanBase.cpp(6.32 KB)
📄 ThreadPlanCallFunction.cpp(16.54 KB)
📄 ThreadPlanCallFunctionUsingABI.cpp(2.35 KB)
📄 ThreadPlanCallOnFunctionExit.cpp(3.3 KB)
📄 ThreadPlanCallUserExpression.cpp(3.77 KB)
📄 ThreadPlanPython.cpp(5.94 KB)
📄 ThreadPlanRunToAddress.cpp(6.53 KB)
📄 ThreadPlanShouldStopHere.cpp(5.82 KB)
📄 ThreadPlanStack.cpp(14.76 KB)
📄 ThreadPlanStepInRange.cpp(18.45 KB)
📄 ThreadPlanStepInstruction.cpp(8.78 KB)
📄 ThreadPlanStepOut.cpp(18.25 KB)
📄 ThreadPlanStepOverBreakpoint.cpp(6.63 KB)
📄 ThreadPlanStepOverRange.cpp(16.61 KB)
📄 ThreadPlanStepRange.cpp(18.23 KB)
📄 ThreadPlanStepThrough.cpp(8.79 KB)
📄 ThreadPlanStepUntil.cpp(11.14 KB)
📄 ThreadPlanTracer.cpp(7.78 KB)
📄 ThreadSpec.cpp(4.46 KB)
📄 UnixSignals.cpp(11.04 KB)
📄 UnwindAssembly.cpp(1.09 KB)
📄 UnwindLLDB.cpp(19.02 KB)

Editing: AssertFrameRecognizer.cpp

#include "lldb/Core/Module.h"
#include "lldb/Symbol/Function.h"
#include "lldb/Symbol/SymbolContext.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/StackFrameList.h"
#include "lldb/Target/Target.h"
#include "lldb/Target/Thread.h"

#include "lldb/Utility/Log.h"
#include "lldb/Utility/Logging.h"

#include "lldb/Target/AssertFrameRecognizer.h"

using namespace llvm;
using namespace lldb;
using namespace lldb_private;

namespace lldb_private {

/// Stores a function module spec, symbol name and possibly an alternate symbol
/// name.
struct SymbolLocation {
  FileSpec module_spec;
  std::vector<ConstString> symbols;
};

/// Fetches the abort frame location depending on the current platform.
///
/// \param[in] os
///    The target's os type.
/// \param[in,out] location
///    The struct that will contain the abort module spec and symbol names.
/// \return
///    \b true, if the platform is supported
///    \b false, otherwise.
bool GetAbortLocation(llvm::Triple::OSType os, SymbolLocation &location) {
  switch (os) {
  case llvm::Triple::Darwin:
  case llvm::Triple::MacOSX:
    location.module_spec = FileSpec("libsystem_kernel.dylib");
    location.symbols.push_back(ConstString("__pthread_kill"));
    break;
  case llvm::Triple::Linux:
    location.module_spec = FileSpec("libc.so.6");
    location.symbols.push_back(ConstString("raise"));
    location.symbols.push_back(ConstString("__GI_raise"));
    location.symbols.push_back(ConstString("gsignal"));
    break;
  default:
    Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_UNWIND));
    LLDB_LOG(log, "AssertFrameRecognizer::GetAbortLocation Unsupported OS");
    return false;
  }

return true;
}

/// Fetches the assert frame location depending on the current platform.
///
/// \param[in] os
///    The target's os type.
/// \param[in,out] location
///    The struct that will contain the assert module spec and symbol names.
/// \return
///    \b true, if the platform is supported
///    \b false, otherwise.
bool GetAssertLocation(llvm::Triple::OSType os, SymbolLocation &location) {
  switch (os) {
  case llvm::Triple::Darwin:
  case llvm::Triple::MacOSX:
    location.module_spec = FileSpec("libsystem_c.dylib");
    location.symbols.push_back(ConstString("__assert_rtn"));
    break;
  case llvm::Triple::Linux:
    location.module_spec = FileSpec("libc.so.6");
    location.symbols.push_back(ConstString("__assert_fail"));
    location.symbols.push_back(ConstString("__GI___assert_fail"));
    break;
  default:
    Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_UNWIND));
    LLDB_LOG(log, "AssertFrameRecognizer::GetAssertLocation Unsupported OS");
    return false;
  }

return true;
}

void RegisterAssertFrameRecognizer(Process *process) {
  static llvm::once_flag g_once_flag;
  llvm::call_once(g_once_flag, [process]() {
    Target &target = process->GetTarget();
    llvm::Triple::OSType os = target.GetArchitecture().GetTriple().getOS();
    SymbolLocation location;

if (!GetAbortLocation(os, location))
      return;

StackFrameRecognizerManager::AddRecognizer(
        StackFrameRecognizerSP(new AssertFrameRecognizer()),
        location.module_spec.GetFilename(), location.symbols,
        /*first_instruction_only*/ false);
  });
}

} // namespace lldb_private

lldb::RecognizedStackFrameSP
AssertFrameRecognizer::RecognizeFrame(lldb::StackFrameSP frame_sp) {
  ThreadSP thread_sp = frame_sp->GetThread();
  ProcessSP process_sp = thread_sp->GetProcess();
  Target &target = process_sp->GetTarget();
  llvm::Triple::OSType os = target.GetArchitecture().GetTriple().getOS();
  SymbolLocation location;

if (!GetAssertLocation(os, location))
    return RecognizedStackFrameSP();

const uint32_t frames_to_fetch = 5;
  const uint32_t last_frame_index = frames_to_fetch - 1;
  StackFrameSP prev_frame_sp = nullptr;

// Fetch most relevant frame
  for (uint32_t frame_index = 0; frame_index < frames_to_fetch; frame_index++) {
    prev_frame_sp = thread_sp->GetStackFrameAtIndex(frame_index);

if (!prev_frame_sp) {
      Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_UNWIND));
      LLDB_LOG(log, "Abort Recognizer: Hit unwinding bound ({1} frames)!",
               frames_to_fetch);
      break;
    }

SymbolContext sym_ctx =
        prev_frame_sp->GetSymbolContext(eSymbolContextEverything);

if (!sym_ctx.module_sp->GetFileSpec().FileEquals(location.module_spec))
      continue;

ConstString func_name = sym_ctx.GetFunctionName();

if (llvm::is_contained(location.symbols, func_name)) {
      // We go a frame beyond the assert location because the most relevant
      // frame for the user is the one in which the assert function was called.
      // If the assert location is the last frame fetched, then it is set as
      // the most relevant frame.

StackFrameSP most_relevant_frame_sp = thread_sp->GetStackFrameAtIndex(
          std::min(frame_index + 1, last_frame_index));

// Pass assert location to AbortRecognizedStackFrame to set as most
      // relevant frame.
      return lldb::RecognizedStackFrameSP(
          new AssertRecognizedStackFrame(most_relevant_frame_sp));
    }
  }

return RecognizedStackFrameSP();
}

AssertRecognizedStackFrame::AssertRecognizedStackFrame(
    StackFrameSP most_relevant_frame_sp)
    : m_most_relevant_frame(most_relevant_frame_sp) {
  m_stop_desc = "hit program assert";
}

lldb::StackFrameSP AssertRecognizedStackFrame::GetMostRelevantFrame() {
  return m_most_relevant_frame;
}

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Editing: AssertFrameRecognizer.cpp

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