| /* POSIX.1 sigaction call for Linux/SPARC64. |
| Copyright (C) 1997-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Miguel de Icaza <miguel@nuclecu.unam.mx> and |
| Jakub Jelinek <jj@ultra.linux.cz>. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <string.h> |
| #include <syscall.h> |
| #include <sysdep.h> |
| #include <sys/signal.h> |
| #include <errno.h> |
| |
| #include <kernel_sigaction.h> |
| |
| /* SPARC 64bit userland requires a kernel that has rt signals anyway. */ |
| |
| static void __rt_sigreturn_stub (void); |
| |
| int |
| __libc_sigaction (int sig, const struct sigaction *act, struct sigaction *oact) |
| { |
| int ret; |
| struct kernel_sigaction kact, koact; |
| unsigned long stub = ((unsigned long) &__rt_sigreturn_stub) - 8; |
| |
| if (act) |
| { |
| kact.k_sa_handler = act->sa_handler; |
| memcpy (&kact.sa_mask, &act->sa_mask, sizeof (sigset_t)); |
| kact.sa_flags = act->sa_flags; |
| kact.sa_restorer = NULL; |
| } |
| |
| /* XXX The size argument hopefully will have to be changed to the |
| real size of the user-level sigset_t. */ |
| ret = INLINE_SYSCALL (rt_sigaction, 5, sig, |
| act ? &kact : 0, |
| oact ? &koact : 0, stub, _NSIG / 8); |
| |
| if (oact && ret >= 0) |
| { |
| oact->sa_handler = koact.k_sa_handler; |
| memcpy (&oact->sa_mask, &koact.sa_mask, sizeof (sigset_t)); |
| oact->sa_flags = koact.sa_flags; |
| oact->sa_restorer = koact.sa_restorer; |
| } |
| |
| return ret; |
| } |
| libc_hidden_def (__libc_sigaction) |
| |
| #include <nptl/sigaction.c> |
| |
| |
| static |
| inhibit_stack_protector |
| void |
| __rt_sigreturn_stub (void) |
| { |
| __asm__ ("mov %0, %%g1\n\t" |
| "ta 0x6d\n\t" |
| : /* no outputs */ |
| : "i" (__NR_rt_sigreturn)); |
| } |