diff options
Diffstat (limited to 'arch/s390/kernel/signal.c')
| -rw-r--r-- | arch/s390/kernel/signal.c | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c index 7f6f9f354545..a8ba840294ff 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: |