/* 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