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PCONTEXT, PDISPATCHER_CONTEXT, _Unwind_Reason_Code (*)(int, int, uint64_t,
struct _Unwind_Exception *, struct _Unwind_Context *));
#endif
static objc_uncaught_exception_handler_t uncaughtExceptionHandler;
static struct objc_exception emergencyExceptions[NUM_EMERGENCY_EXCEPTIONS];
#ifdef OF_HAVE_THREADS
static of_spinlock_t emergencyExceptionsSpinlock;
OF_CONSTRUCTOR()
{
if (of_spinlock_new(&emergencyExceptionsSpinlock) != 0)
OBJC_ERROR("Cannot create spinlock!");
}
#endif
static uint64_t
readULEB128(const uint8_t **ptr)
{
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PCONTEXT, PDISPATCHER_CONTEXT, _Unwind_Reason_Code (*)(int, int, uint64_t,
struct _Unwind_Exception *, struct _Unwind_Context *));
#endif
static objc_uncaught_exception_handler_t uncaughtExceptionHandler;
static struct objc_exception emergencyExceptions[NUM_EMERGENCY_EXCEPTIONS];
#ifdef OF_HAVE_THREADS
static OFSpinlock emergencyExceptionsSpinlock;
OF_CONSTRUCTOR()
{
if (OFSpinlockNew(&emergencyExceptionsSpinlock) != 0)
OBJC_ERROR("Cannot create spinlock!");
}
#endif
static uint64_t
readULEB128(const uint8_t **ptr)
{
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}
static void
emergencyExceptionCleanup(_Unwind_Reason_Code reason,
struct _Unwind_Exception *ex)
{
#ifdef OF_HAVE_THREADS
if (of_spinlock_lock(&emergencyExceptionsSpinlock) != 0)
OBJC_ERROR("Cannot lock spinlock!");
#endif
ex->class = 0;
#ifdef OF_HAVE_THREADS
if (of_spinlock_unlock(&emergencyExceptionsSpinlock) != 0)
OBJC_ERROR("Cannot unlock spinlock!");
#endif
}
void
objc_exception_throw(id object)
{
struct objc_exception *e = calloc(1, sizeof(*e));
bool emergency = false;
if (e == NULL) {
#ifdef OF_HAVE_THREADS
if (of_spinlock_lock(&emergencyExceptionsSpinlock) != 0)
OBJC_ERROR("Cannot lock spinlock!");
#endif
for (uint_fast8_t i = 0; i < NUM_EMERGENCY_EXCEPTIONS; i++) {
if (emergencyExceptions[i].exception.class == 0) {
e = &emergencyExceptions[i];
e->exception.class = GNUCOBJC_EXCEPTION_CLASS;
emergency = true;
break;
}
}
#ifdef OF_HAVE_THREADS
if (of_spinlock_unlock(&emergencyExceptionsSpinlock) != 0)
OBJC_ERROR("Cannot lock spinlock!");
#endif
}
if (e == NULL)
OBJC_ERROR("Not enough memory to allocate exception!");
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}
static void
emergencyExceptionCleanup(_Unwind_Reason_Code reason,
struct _Unwind_Exception *ex)
{
#ifdef OF_HAVE_THREADS
if (OFSpinlockLock(&emergencyExceptionsSpinlock) != 0)
OBJC_ERROR("Cannot lock spinlock!");
#endif
ex->class = 0;
#ifdef OF_HAVE_THREADS
if (OFSpinlockUnlock(&emergencyExceptionsSpinlock) != 0)
OBJC_ERROR("Cannot unlock spinlock!");
#endif
}
void
objc_exception_throw(id object)
{
struct objc_exception *e = calloc(1, sizeof(*e));
bool emergency = false;
if (e == NULL) {
#ifdef OF_HAVE_THREADS
if (OFSpinlockLock(&emergencyExceptionsSpinlock) != 0)
OBJC_ERROR("Cannot lock spinlock!");
#endif
for (uint_fast8_t i = 0; i < NUM_EMERGENCY_EXCEPTIONS; i++) {
if (emergencyExceptions[i].exception.class == 0) {
e = &emergencyExceptions[i];
e->exception.class = GNUCOBJC_EXCEPTION_CLASS;
emergency = true;
break;
}
}
#ifdef OF_HAVE_THREADS
if (OFSpinlockUnlock(&emergencyExceptionsSpinlock) != 0)
OBJC_ERROR("Cannot lock spinlock!");
#endif
}
if (e == NULL)
OBJC_ERROR("Not enough memory to allocate exception!");
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