1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859 |
- /* 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);
- /* Experimentally off - 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
|