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authorWaldemar Brodkorb <wbx@openadk.org>2017-05-24 20:49:02 +0200
committerWaldemar Brodkorb <wbx@openadk.org>2017-06-23 23:46:04 +0200
commit041cdc2769407c4d3869b218ad7ee7638e1c306e (patch)
tree1ea25250d74dcb230cf5feee99226fc080dbd678 /libc/sysdeps/linux/sparc64/sigaction.c
parent58a5ba12bffad5916d9897c2870fc483f1db8282 (diff)
sparc64: add basic support
No NPTL, no LDSO support. Bootup with Busybox Ash in Qemu working. Testuite shows only two failures, but mksh continue/break support doesn't work.
Diffstat (limited to 'libc/sysdeps/linux/sparc64/sigaction.c')
-rw-r--r--libc/sysdeps/linux/sparc64/sigaction.c77
1 files changed, 77 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/sparc64/sigaction.c b/libc/sysdeps/linux/sparc64/sigaction.c
new file mode 100644
index 000000000..d8aaad0fb
--- /dev/null
+++ b/libc/sysdeps/linux/sparc64/sigaction.c
@@ -0,0 +1,77 @@
+/* POSIX.1 sigaction call for Linux/SPARC64.
+ Copyright (C) 1997-2017 Free Software Foundation, Inc.
+ 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 <bits/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;
+}
+
+#ifndef LIBC_SIGACTION
+# ifndef __UCLIBC_HAS_THREADS__
+strong_alias(__libc_sigaction,sigaction)
+libc_hidden_def(sigaction)
+# else
+weak_alias(__libc_sigaction,sigaction)
+libc_hidden_weak(sigaction)
+# endif
+#endif
+
+static void
+__rt_sigreturn_stub (void)
+{
+ __asm__ ("mov %0, %%g1\n\t"
+ "ta 0x6d\n\t"
+ : /* no outputs */
+ : "i" (__NR_rt_sigreturn));
+}