| 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 | } |