Remove Exceptions since OS X does not catch them. Instead, it waits for the signal.

stepmania/src/archutils/Unix/Backtrace.cpp

@@ -385,12 +385,6 @@ typedef struct Frame
     void *linkReg;
 } *FramePtr;
 
-void GetExceptionBacktraceContext( BacktraceContext *ctx, const ExceptionInformation *exception )
-{
-	ctx->PC = (void *) exception->machineState->PC.lo;
-	ctx->FramePtr = (void *) exception->registerImage->R1.lo;
-}
-
 void GetSignalBacktraceContext( BacktraceContext *ctx, const ucontext_t *uc )
 {
 	ctx->PC = (void *) uc->uc_mcontext->ss.srr0;

stepmania/src/archutils/Unix/Backtrace.h

@@ -36,14 +36,6 @@ bool GetThreadBacktraceContext( uint64_t ThreadID, BacktraceContext *ctx );
 #include <ucontext.h>
 void GetSignalBacktraceContext( BacktraceContext *ctx, const ucontext_t *uc );
 
-#if defined(DARWIN)
-#include <MachineExceptions.h>
-
-/* Set up a BacktraceContext to get a backtrace after receiving an exception, given
- * an ExceptionInformation*. */
-void GetExceptionBacktraceContext( BacktraceContext *ctx, const ExceptionInformation *exception );
-#endif
-
 #define BACKTRACE_METHOD_NOT_AVAILABLE ((void*) -1)
 
 #endif

stepmania/src/archutils/Unix/CrashHandler.cpp

@@ -218,38 +218,6 @@ static void parent_process( int to_child, const CrashData *crash )
  * signal trampolines.  The result is that it doesn't properly show the
  * function that actually caused the signal--which is the most important
  * one!  So, we have to do it all ourself. */
-#if defined(DARWIN)
-const char *ExceptionName( int signo )
-{
-#define X(code) case k##code: return #code;
-	switch( signo )
-	{
-	X(UnknownException)
-	X(IllegalInstructionException)
-	X(TrapException)
-	X(AccessException)
-	X(UnmappedMemoryException)
-	X(ExcludedMemoryException)
-	X(ReadOnlyMemoryException)
-	X(UnresolvablePageFaultException)
-	X(PrivilegeViolationException)
-	X(TraceException)
-	X(InstructionBreakpointException)
-	X(DataBreakpointException)
-	X(FloatingPointException)
-	X(StackOverflowException)
-	default:
-	{
-		static char buf[128];
-		strcpy( buf, "Unknown exception " );
-		strcat( buf, itoa(signo) );
-		return buf;
-	}
-	}
-#undef X
-}
-#endif
-
 const char *SignalName( int signo )
 {
 #define X(a) case a: return #a;
@@ -316,11 +284,6 @@ static void RunCrashHandler( const CrashData *crash )
 			safe_print( fileno(stderr), "Deadlock (", crash->reason, ")", NULL );
 			break;
 
-#if defined(DARWIN)
-		case CrashData::OSX_EXCEPTION:
-			safe_print( fileno(stderr), "Fatal exception (", ExceptionName( crash->kind ), ")", NULL );
-			break;
-#endif
 		case CrashData::FORCE_CRASH_THIS_THREAD:
 			safe_print( fileno(stderr), "Crash handler failed an assertion: \"", crash->reason, "\"", NULL );
 			break;
@@ -465,24 +428,6 @@ void CrashSignalHandler( int signal, siginfo_t *si, const ucontext_t *uc )
 	RunCrashHandler( &crash );
 }
 
-#if defined(DARWIN)
-OSStatus CrashExceptionHandler( ExceptionInformation *e )
-{
-	CrashData crash;
-	memset( &crash, 0, sizeof(crash) );
-
-	crash.type = CrashData::OSX_EXCEPTION;
-	crash.kind = e->theKind;
-
-	BacktraceContext ctx;
-	GetExceptionBacktraceContext( &ctx, e );
-	GetBacktrace( crash.BacktracePointers, BACKTRACE_MAX_SIZE, &ctx );
-
-	RunCrashHandler( &crash );
-	_exit(1);
-}
-#endif
-
 void InitializeCrashHandler()
 {
 	InitializeBacktrace();

stepmania/src/archutils/Unix/CrashHandler.h

@@ -12,11 +12,6 @@ void InitializeCrashHandler();
 #include <ucontext.h>
 void CrashSignalHandler( int signal, siginfo_t *si, const ucontext_t *uc );
 
-#if defined(DARWIN)
-#include <MachineExceptions.h>
-OSStatus CrashExceptionHandler( ExceptionInformation *e );
-#endif
-
 #endif
 
 /*

stepmania/src/archutils/Unix/CrashHandlerChild.cpp

@@ -307,13 +307,6 @@ static void child_process()
 	}
 	break;
     }
-
-#if defined(DARWIN)
-    case CrashData::OSX_EXCEPTION:
-	reason = ExceptionName( crash.kind );
-	break;
-#endif
-
     case CrashData::FORCE_CRASH_THIS_THREAD:
     case CrashData::FORCE_CRASH_DEADLOCK:
 	crash.reason[ sizeof(crash.reason)-1] = 0;