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/* vi: set sw=4 ts=4: */
/*
* sigaction() for Xtensa uClibc
*
* Copyright (C) 2007, 2008 Tensilica Inc.
*
* Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
*/
#include <errno.h>
#include <signal.h>
#include <sys/syscall.h>
#include <string.h>
#include <bits/kernel_sigaction.h>
#define SA_RESTORER 0x04000000
extern void __default_sa_restorer (void);
libc_hidden_proto(memcpy)
int __libc_sigaction (int signum, const struct sigaction *act,
struct sigaction *oldact)
{
struct kernel_sigaction kact, koldact;
int result;
if (act) {
kact.k_sa_handler = act->sa_handler;
memcpy(&kact.sa_mask, &act->sa_mask, sizeof (kact.sa_mask));
kact.sa_flags = act->sa_flags;
if (kact.sa_flags & SA_RESTORER) {
kact.sa_restorer = act->sa_restorer;
} else {
kact.sa_restorer = __default_sa_restorer;
kact.sa_flags |= SA_RESTORER;
}
}
result = __syscall_rt_sigaction(signum, act ? __ptrvalue (&kact) : NULL,
oldact ? __ptrvalue (&koldact) : NULL,
_NSIG / 8);
if (oldact && result >= 0) {
oldact->sa_handler = koldact.k_sa_handler;
memcpy(&oldact->sa_mask, &koldact.sa_mask, sizeof(oldact->sa_mask));
oldact->sa_flags = koldact.sa_flags;
oldact->sa_restorer = koldact.sa_restorer;
}
return result;
}
#ifndef LIBC_SIGACTION
libc_hidden_proto (sigaction)
weak_alias (__libc_sigaction, sigaction)
libc_hidden_weak (sigaction)
#endif
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