Added AVR32 support to uClibc. Signed-off-by: Hans-Christian Egtvedt <hcegtvedt@atmel.com>

1 files changed, 59 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/avr32/sigaction.c b/libc/sysdeps/linux/avr32/sigaction.c
new file mode 100644
index 000000000..6817e1b1e
--- /dev/null
+++ b/libc/sysdeps/linux/avr32/sigaction.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2004-2007 Atmel Corporation
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser General
+ * Public License.  See the file "COPYING.LIB" in the main directory of this
+ * archive for more details.
+ */
+#include <errno.h>
+#include <signal.h>
+#include <string.h>
+#include <sys/syscall.h>
+#include <bits/kernel_sigaction.h>
+
+#define SA_RESTORER    0x04000000
+extern void __default_rt_sa_restorer(void);
+
+libc_hidden_proto(memcpy)
+
+/*
+ * If act is not NULL, change the action for sig to *act.
+ * If oact is not NULL, put the old action for sig in *oact.
+ */
+int __libc_sigaction(int signum, const struct sigaction *act,
+                    struct sigaction *oldact)
+{
+       struct kernel_sigaction kact, koact;
+       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 | SA_ONSTACK))
+                       kact.sa_restorer = act->sa_restorer;
+               else
+                       kact.sa_restorer = __default_rt_sa_restorer;
+               kact.sa_flags |= SA_RESTORER;
+       }
+
+       result = __syscall_rt_sigaction(signum, act ? __ptrvalue(&kact) : NULL,
+                                       oldact ? __ptrvalue(&koact) : NULL,
+                                       _NSIG / 8);
+
+       if (oldact && result >= 0) {
+               oldact->sa_handler = koact.k_sa_handler;
+               memcpy(&oldact->sa_mask, &koact.sa_mask,
+                      sizeof(oldact->sa_mask));
+               oldact->sa_flags = koact.sa_flags;
+               oldact->sa_restorer = koact.sa_restorer;
+       }
+
+       return result;
+}
+
+#ifndef LIBC_SIGACTION
+libc_hidden_proto(sigaction)
+weak_alias(__libc_sigaction, sigaction)
+libc_hidden_weak(sigaction)
+#endif