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authorAustin Foxley <austinf@cetoncorp.com>2009-05-20 18:05:24 -0700
committerAustin Foxley <austinf@cetoncorp.com>2009-05-20 18:07:13 -0700
commit4a325fb9096f9540a5637ece62dc8874fd9e3799 (patch)
tree32585260e47dc50c33143737c10bd3099cb24bfc /libc/sysdeps/linux
parenteacb3674d0843f700cb7ddddfcd1f16b80453ac7 (diff)
Add a sigaction implementation for sparc
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
Diffstat (limited to 'libc/sysdeps/linux')
-rw-r--r--libc/sysdeps/linux/sparc/Makefile.arch2
-rw-r--r--libc/sysdeps/linux/sparc/sigaction.c94
2 files changed, 95 insertions, 1 deletions
diff --git a/libc/sysdeps/linux/sparc/Makefile.arch b/libc/sysdeps/linux/sparc/Makefile.arch
index 4562eaba5..346f13fe7 100644
--- a/libc/sysdeps/linux/sparc/Makefile.arch
+++ b/libc/sysdeps/linux/sparc/Makefile.arch
@@ -5,7 +5,7 @@
# Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
#
-CSRC := brk.c __syscall_error.c qp_ops.c
+CSRC := brk.c __syscall_error.c qp_ops.c sigaction.c
SSRC := \
__longjmp.S fork.S vfork.S clone.S setjmp.S bsd-setjmp.S bsd-_setjmp.S \
diff --git a/libc/sysdeps/linux/sparc/sigaction.c b/libc/sysdeps/linux/sparc/sigaction.c
new file mode 100644
index 000000000..9dee63b6c
--- /dev/null
+++ b/libc/sysdeps/linux/sparc/sigaction.c
@@ -0,0 +1,94 @@
+/* POSIX.1 sigaction call for Linux/SPARC.
+ Copyright (C) 1997-2000,2002,2003,2005 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Miguel de Icaza (miguel@nuclecu.unam.mx), 1997.
+
+ 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA.
+
+ Ported to uClibc from glibc: 090520:
+ Jan Buchholz, KIP, Uni Heidelberg <jan.buchholz@kip.uni-heidelberg.de>
+ Austin Foxley, Ceton Corporation <austinf@cetoncorp.com>
+*/
+
+#include <errno.h>
+#include <signal.h>
+#include <string.h>
+#include <sys/syscall.h>
+#include <bits/kernel_sigaction.h>
+
+
+_syscall5(int, rt_sigaction, int, a, int, b, int, c, int, d, int, e);
+static void __rt_sigreturn_stub (void);
+static void __sigreturn_stub (void);
+
+int
+__libc_sigaction (int sig, __const struct sigaction *act, struct sigaction *oact)
+{
+ int ret;
+ struct old_kernel_sigaction kact, koact;
+ unsigned long stub = 0;
+ int saved_errno = errno;
+
+ if (act)
+ {
+ kact.k_sa_handler = act->sa_handler;
+ memcpy (&kact.sa_mask, &act->sa_mask, sizeof(sigset_t));
+ if (((kact.sa_flags = act->sa_flags) & SA_SIGINFO)!= 0)
+ stub = (unsigned long) &__rt_sigreturn_stub;
+ else
+ stub = (unsigned long) &__sigreturn_stub;
+ stub -= 8;
+ 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 = rt_sigaction(sig, act ? &kact : NULL, oact ? &koact : NULL, stub, _NSIG / 8);
+
+ if (ret >= 0 || errno != ENOSYS)
+ {
+ 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;
+ }
+ __set_errno (saved_errno);
+ return -1;
+}
+
+#ifndef LIBC_SIGACTION
+weak_alias(__libc_sigaction,sigaction)
+libc_hidden_weak(sigaction)
+#endif
+
+static void
+__rt_sigreturn_stub (void)
+{
+ __asm__ ("mov %0, %%g1\n\t"
+ "ta 0x10\n\t"
+ : /* no outputs */
+ : "i" (__NR_rt_sigreturn));
+}
+static void
+__sigreturn_stub (void)
+{
+ __asm__ ("mov %0, %%g1\n\t"
+ "ta 0x10\n\t"
+ : /* no outputs */
+ : "i" (__NR_sigreturn));
+}