tests/tcg/x86_64/test-1648.c

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /* See https://gitlab.com/qemu-project/qemu/-/issues/1648 */
   3
   4 #include <signal.h>
   5
   6 __attribute__((noinline))
   7 void bar(void)
   8 {
   9     /* Success! Continue through sigreturn. */
  10 }
  11
  12 /*
  13  * Because of the change of ABI between foo and bar, the compiler is
  14  * required to save XMM6-XMM15.  The compiler will use MOVAPS or MOVDQA,
  15  * which will trap if the stack frame is not 16 byte aligned.
  16  */
  17 __attribute__((noinline, ms_abi))
  18 void foo(void)
  19 {
  20     bar();
  21 }
  22
  23 void sighandler(int num)
  24 {
  25     foo();
  26 }
  27
  28 int main(void)
  29 {
  30     signal(SIGUSR1, sighandler);
  31     raise(SIGUSR1);
  32     return 0;
  33 }