scripts/gcc-goto.sh

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 # Test for gcc 'asm goto' support
   4 # Copyright (C) 2010, Jason Baron <jbaron@redhat.com>
   5
   6 cat << "END" | $@ -x c - -c -o /dev/null >/dev/null 2>&1 && echo "y"
   7 int main(void)
   8 {
   9 #if defined(__arm__) || defined(__aarch64__)
  10         /*
  11          * Not related to asm goto, but used by jump label
  12          * and broken on some ARM GCC versions (see GCC Bug 48637).
  13          */
  14         static struct { int dummy; int state; } tp;
  15         asm (".long %c0" :: "i" (&tp.state));
  16 #endif
  17
  18 entry:
  19         asm goto ("" :::: entry);
  20         return 0;
  21 }
  22 END