PROTECTED _Unwind_Reason_Code
_Unwind_Resume_or_Rethrow (struct _Unwind_Exception *exception_object)
{
struct _Unwind_Context context;
unw_context_t uc;
if (exception_object->private_1)
{
int ret;
/* ANDROID support update. */
int destroy_map = 1;
unw_map_local_create ();
if (_Unwind_InitContext (&context, &uc) < 0)
ret = _URC_FATAL_PHASE2_ERROR;
else
ret = _Unwind_Phase2 (exception_object, &context, &destroy_map);
if (destroy_map)
unw_map_local_destroy ();
return ret;
/* End ANDROID support. */
}
else
return _Unwind_RaiseException (exception_object);
}
PROTECTED void
_Unwind_Resume (struct _Unwind_Exception *exception_object)
{
struct _Unwind_Context context;
unw_context_t uc;
if (_Unwind_InitContext (&context, &uc) < 0)
abort ();
Debug (1, "(exception_object=%p private_2=%lx)\n", exception_object, exception_object->private_2);
_Unwind_Phase2 (exception_object, &context);
abort ();
}
PROTECTED void
_Unwind_Resume (struct _Unwind_Exception *exception_object)
{
struct _Unwind_Context context;
unw_context_t uc;
/* ANDROID support update. */
int destroy_map = 1;
unw_map_local_create ();
if (_Unwind_InitContext (&context, &uc) < 0)
{
unw_map_local_destroy ();
abort ();
}
_Unwind_Phase2 (exception_object, &context, &destroy_map);
if (destroy_map)
unw_map_local_destroy ();
/* End ANDROID support. */
abort ();
}
PROTECTED _Unwind_Reason_Code
_Unwind_RaiseException (struct _Unwind_Exception *exception_object)
{
uint64_t exception_class = exception_object->exception_class;
_Unwind_Personality_Fn personality;
struct _Unwind_Context context;
_Unwind_Reason_Code reason;
unw_proc_info_t pi;
unw_context_t uc;
unw_word_t ip;
int ret;
if (_Unwind_InitContext (&context, &uc) < 0)
return _URC_FATAL_PHASE1_ERROR;
Debug (1, "(exception_object=%p)\n", exception_object);
/* Phase 1 (search phase) */
while (1)
{
if ((ret = unw_step (&context.cursor)) <= 0)
{
if (ret == 0)
{
Debug (1, "no handler found\n");
return _URC_END_OF_STACK;
}
else
return _URC_FATAL_PHASE1_ERROR;
}
if (unw_get_proc_info (&context.cursor, &pi) < 0)
return _URC_FATAL_PHASE1_ERROR;
personality = (_Unwind_Personality_Fn) (uintptr_t) pi.handler;
if (personality)
{
reason = (*personality) (_U_VERSION, _UA_SEARCH_PHASE,
exception_class, exception_object,
&context);
if (reason != _URC_CONTINUE_UNWIND)
{
if (reason == _URC_HANDLER_FOUND)
break;
else
{
Debug (1, "personality returned %d\n", reason);
return _URC_FATAL_PHASE1_ERROR;
}
}
}
}
/* Exceptions are associated with IP-ranges. If a given exception
is handled at a particular IP, it will _always_ be handled at
that IP. If this weren't true, we'd have to track the tuple
(IP,SP,BSP) to uniquely identify the stack frame that's handling
the exception. */
if (unw_get_reg (&context.cursor, UNW_REG_IP, &ip) < 0)
return _URC_FATAL_PHASE1_ERROR;
exception_object->private_1 = 0; /* clear "stop" pointer */
exception_object->private_2 = ip; /* save frame marker */
Debug (1, "found handler for IP=%lx; entering cleanup phase\n", (long) ip);
/* Reset the cursor to the first frame: */
if (unw_init_local (&context.cursor, &uc) < 0)
return _URC_FATAL_PHASE1_ERROR;
return _Unwind_Phase2 (exception_object, &context);
}
