ARC uses the no-legacy syscall ABI where there is no need for
kernel_sigaction interworking.
Further we rely on default SA_RESTORER in libc for sigreturn.
To me all the song-and-dance in ltp_rt_sigaction() doesn't make sense.
The intent it to test whatever platform libc + kernel combination
provides and to that end any fixups in LTP seem odd to me.
So for ARC just call what libc provides and don't claim to support
more/less.
e.g. rt_sigaction02 fails for ARC, since libc sigaction does following
| int __libc_sigaction (int sig, const struct sigaction *act, struct sigaction *oact)
| {
| struct sigaction kact;
|
| if (act && !(act->sa_flags & SA_RESTORER)) {
| kact.sa_restorer = __default_rt_sa_restorer;
So we don't get the EFAULT for @act == -1 which kernel would provide.
Instead we get a segv rightawat. But that's fine, that is how our system
works.
Signed-off-by: Vineet Gupta <vgupta at synopsys.com>
---
include/lapi/rt_sigaction.h | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/include/lapi/rt_sigaction.h b/include/lapi/rt_sigaction.h
index 3a5a763ce094..12af3c3b7b27 100644
--- a/include/lapi/rt_sigaction.h
+++ b/include/lapi/rt_sigaction.h
@@ -155,6 +155,13 @@ static void __attribute__((used)) __sigreturn_stub(void)
static int ltp_rt_sigaction(int signum, const struct sigaction *act,
struct sigaction *oact, size_t sigsetsize)
{
+#ifdef __arc__
+ /*
+ * No playing games with various internals of sigaction / fields
+ * just use whatever libc + kernel provide
+ */
+ return sigaction(signum, act, oact);
+#else
int ret;
struct kernel_sigaction kact, koact;
struct kernel_sigaction *kact_p = NULL;
@@ -218,6 +225,7 @@ static int ltp_rt_sigaction(int signum, const struct sigaction *act,
}
return ret;
+#endif
}
#endif /* LTP_RT_SIGACTION_H */
--
2.5.0
