scripts/gcc-goto.sh

   1 #!/bin/sh
   2 # Test for gcc 'asm goto' support
   3 # Copyright (C) 2010, Jason Baron <jbaron@redhat.com>
   4
   5 cat << "END" | $@ -x c - -c -o /dev/null >/dev/null 2>&1 && echo "y"
   6 int main(void)
   7 {
   8 #if defined(__arm__) || defined(__aarch64__)
   9         /*
  10          * Not related to asm goto, but used by jump label
  11          * and broken on some ARM GCC versions (see GCC Bug 48637).
  12          */
  13         static struct { int dummy; int state; } tp;
  14         asm (".long %c0" :: "i" (&tp.state));
  15 #endif
  16
  17 entry:
  18         asm goto ("" :::: entry);
  19         return 0;
  20 }
  21 END