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[S390] single-step cleanup

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Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Roland McGrath
2008-01-26 14:11:22 +01:00
committed by Martin Schwidefsky
parent ea29ee16e6
commit 0ac30be461
3 changed files with 27 additions and 16 deletions
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20
arch/s390/kernel/signal.c
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@@ -471,6 +471,7 @@ void do_signal(struct pt_regs *regs)
if (signr > 0) {
/* Whee! Actually deliver the signal. */
int ret;
#ifdef CONFIG_COMPAT
if (test_thread_flag(TIF_31BIT)) {
extern int handle_signal32(unsigned long sig,
@@ -478,15 +479,12 @@ void do_signal(struct pt_regs *regs)
siginfo_t *info,
sigset_t *oldset,
struct pt_regs *regs);
if (handle_signal32(
signr, &ka, &info, oldset, regs) == 0) {
if (test_thread_flag(TIF_RESTORE_SIGMASK))
clear_thread_flag(TIF_RESTORE_SIGMASK);
}
return;
ret = handle_signal32(signr, &ka, &info, oldset, regs);
}
else
#endif
if (handle_signal(signr, &ka, &info, oldset, regs) == 0) {
ret = handle_signal(signr, &ka, &info, oldset, regs);
if (!ret) {
/*
* A signal was successfully delivered; the saved
* sigmask will have been stored in the signal frame,
@@ -495,6 +493,14 @@ void do_signal(struct pt_regs *regs)
*/
if (test_thread_flag(TIF_RESTORE_SIGMASK))
clear_thread_flag(TIF_RESTORE_SIGMASK);
/*
* If we would have taken a single-step trap
* for a normal instruction, act like we took
* one for the handler setup.
*/
if (current->thread.per_info.single_step)
set_thread_flag(TIF_SINGLE_STEP);
}
return;
}