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Diffstat (limited to 'arch/s390/kernel/signal.c')
-rw-r--r--arch/s390/kernel/signal.c20
1 files changed, 12 insertions, 8 deletions
diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c
index 7f6f9f35454..a8ba840294f 100644
--- a/arch/s390/kernel/signal.c
+++ b/arch/s390/kernel/signal.c
@@ -302,9 +302,13 @@ static int setup_frame(int sig, struct k_sigaction *ka,
/* We forgot to include these in the sigcontext.
To avoid breaking binary compatibility, they are passed as args. */
- regs->gprs[4] = current->thread.trap_no;
- regs->gprs[5] = current->thread.prot_addr;
- regs->gprs[6] = task_thread_info(current)->last_break;
+ if (sig == SIGSEGV || sig == SIGBUS || sig == SIGILL ||
+ sig == SIGTRAP || sig == SIGFPE) {
+ /* set extra registers only for synchronous signals */
+ regs->gprs[4] = regs->int_code & 127;
+ regs->gprs[5] = regs->int_parm_long;
+ regs->gprs[6] = task_thread_info(current)->last_break;
+ }
/* Place signal number on stack to allow backtrace from handler. */
if (__put_user(regs->gprs[2], (int __user *) &frame->signo))
@@ -434,13 +438,13 @@ void do_signal(struct pt_regs *regs)
* call information.
*/
current_thread_info()->system_call =
- test_thread_flag(TIF_SYSCALL) ? regs->svc_code : 0;
+ test_thread_flag(TIF_SYSCALL) ? regs->int_code : 0;
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
/* Whee! Actually deliver the signal. */
if (current_thread_info()->system_call) {
- regs->svc_code = current_thread_info()->system_call;
+ regs->int_code = current_thread_info()->system_call;
/* Check for system call restarting. */
switch (regs->gprs[2]) {
case -ERESTART_RESTARTBLOCK:
@@ -457,7 +461,7 @@ void do_signal(struct pt_regs *regs)
regs->gprs[2] = regs->orig_gpr2;
regs->psw.addr =
__rewind_psw(regs->psw,
- regs->svc_code >> 16);
+ regs->int_code >> 16);
break;
}
}
@@ -488,11 +492,11 @@ void do_signal(struct pt_regs *regs)
/* No handlers present - check for system call restart */
clear_thread_flag(TIF_SYSCALL);
if (current_thread_info()->system_call) {
- regs->svc_code = current_thread_info()->system_call;
+ regs->int_code = current_thread_info()->system_call;
switch (regs->gprs[2]) {
case -ERESTART_RESTARTBLOCK:
/* Restart with sys_restart_syscall */
- regs->svc_code = __NR_restart_syscall;
+ regs->int_code = __NR_restart_syscall;
/* fallthrough */
case -ERESTARTNOHAND:
case -ERESTARTSYS: