| /* Verify that unwinding can find SPE registers in signal frames. */ |
| /* Origin: Joseph Myers <joseph@codesourcery.com> */ |
| /* { dg-do run { target { powerpc*-*-linux* && powerpc_spe } } } */ |
| /* { dg-options "-fexceptions -fnon-call-exceptions -O2" } */ |
| |
| #include <unwind.h> |
| #include <stdlib.h> |
| #include <signal.h> |
| #include <string.h> |
| |
| int count; |
| char *null; |
| int found_reg; |
| |
| typedef int v2si __attribute__((__vector_size__(8))); |
| |
| v2si v1 = { 123, 234 }; |
| v2si v2 = { 345, 456 }; |
| |
| static _Unwind_Reason_Code |
| force_unwind_stop (int version, _Unwind_Action actions, |
| _Unwind_Exception_Class exc_class, |
| struct _Unwind_Exception *exc_obj, |
| struct _Unwind_Context *context, |
| void *stop_parameter) |
| { |
| unsigned int reg; |
| if (actions & _UA_END_OF_STACK) |
| abort (); |
| if (_Unwind_GetGR (context, 1215) == 123) |
| found_reg = 1; |
| return _URC_NO_REASON; |
| } |
| |
| static void force_unwind () |
| { |
| struct _Unwind_Exception *exc = malloc (sizeof (*exc)); |
| memset (&exc->exception_class, 0, sizeof (exc->exception_class)); |
| exc->exception_cleanup = 0; |
| |
| #ifndef __USING_SJLJ_EXCEPTIONS__ |
| _Unwind_ForcedUnwind (exc, force_unwind_stop, 0); |
| #else |
| _Unwind_SjLj_ForcedUnwind (exc, force_unwind_stop, 0); |
| #endif |
| |
| abort (); |
| } |
| |
| static void counter (void *p __attribute__((unused))) |
| { |
| ++count; |
| } |
| |
| static void handler (void *p __attribute__((unused))) |
| { |
| if (count != 2) |
| abort (); |
| if (!found_reg) |
| abort (); |
| exit (0); |
| } |
| |
| static int __attribute__((noinline)) fn5 () |
| { |
| char dummy __attribute__((cleanup (counter))); |
| force_unwind (); |
| return 0; |
| } |
| |
| static void fn4 (int sig) |
| { |
| char dummy __attribute__((cleanup (counter))); |
| /* Clobber high part without compiler's knowledge so the only saved |
| copy is from the signal frame. */ |
| asm volatile ("evmergelo 15,15,15"); |
| fn5 (); |
| null = NULL; |
| } |
| |
| static void fn3 () |
| { |
| abort (); |
| } |
| |
| static int __attribute__((noinline)) fn2 () |
| { |
| register v2si r15 asm("r15"); |
| r15 = v1; |
| asm volatile ("" : "+r" (r15)); |
| *null = 0; |
| fn3 (); |
| return 0; |
| } |
| |
| static int __attribute__((noinline)) fn1 () |
| { |
| signal (SIGSEGV, fn4); |
| signal (SIGBUS, fn4); |
| fn2 (); |
| return 0; |
| } |
| |
| static int __attribute__((noinline)) fn0 () |
| { |
| char dummy __attribute__((cleanup (handler))); |
| fn1 (); |
| null = 0; |
| return 0; |
| } |
| |
| int main() |
| { |
| fn0 (); |
| abort (); |
| } |