gcc/testsuite/gcc.dg/cwsc1.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O" } */
   3
   4 #if defined(__x86_64__)
   5 # define CHAIN  "%r10"
   6 #elif defined(__i386__)
   7 # define CHAIN  "%ecx"
   8 #elif defined(__aarch64__)
   9 # define CHAIN  "x18"
  10 #elif defined(__alpha__)
  11 # define CHAIN  "$1"
  12 #elif defined(__arm__)
  13 # define CHAIN  "ip"
  14 #elif defined(__powerpc__)
  15 # define CHAIN  "11"
  16 #elif defined(__s390__)
  17 # define CHAIN  "%r0"
  18 #elif defined(__sparc__)
  19 # ifdef __arch64__
  20 #  define CHAIN "%g5"
  21 # else
  22 #  define CHAIN "%g2"
  23 # endif
  24 #endif
  25
  26 #ifdef CHAIN
  27 void *__attribute__((noinline, noclone)) foo(void)
  28 {
  29   register void *chain __asm__(CHAIN);
  30   return chain;
  31 }
  32
  33 void * (*ptr)(void) = foo;
  34 extern void abort(void);
  35
  36 int main()
  37 {
  38   char c;
  39   void *x = __builtin_call_with_static_chain(ptr(), &c);
  40   if (x != &c)
  41     abort();
  42   return 0;
  43 }
  44 #else
  45 int main() { return 0; }
  46 #endif