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.

1 files changed, 37 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/sparc64/setcontext.S b/libc/sysdeps/linux/sparc64/setcontext.S
new file mode 100644
index 000000000..a899549a8
--- /dev/null
+++ b/libc/sysdeps/linux/sparc64/setcontext.S
@@ -0,0 +1,37 @@
+/* Copyright (C) 1997-2017 Free Software Foundation, Inc.
+   Contributed by Richard Henderson (rth@tamu.edu).
+
+   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 <sysdep.h>
+#include "ucontext_i.h"
+
+/* int setcontext(ucontext_t *ctx); */
+.weak setcontext
+ENTRY(setcontext)
+
+	ba,pt	%xcc, 1f
+	 mov	1, %o1
+
+END(setcontext)
+
+/* int __setcontext(ucontext_t *ctx, int restoremask); */
+ENTRY(__setcontext)
+
+1:	ldx	[%o0 + UC_SIGMASK], %o2
+	stx	%o2, [%o0 + __UC_SIGMASK]
+	ta	0x6f
+
+END(__setcontext)