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, 40 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/sparc64/__longjmp.S b/libc/sysdeps/linux/sparc64/__longjmp.S
new file mode 100644
index 000000000..79cefcc9d
--- /dev/null
+++ b/libc/sysdeps/linux/sparc64/__longjmp.S
@@ -0,0 +1,40 @@
+/* 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>
+
+/* Offsets into the jmp_buf structure.  */
+
+#define O_mask_was_saved	512
+#define O_gregs			32
+#define O_g1			(O_gregs + 4*8)
+
+ENTRY(__longjmp)
+
+	/* Modify the context with the value we want to return.  */
+	movre	%o1, 1, %o1
+	stx	%o1, [%o0 + O_g1]
+
+	/* Let setcontext know if we want to modify the current sigmask. */
+	ld	[%o0 + O_mask_was_saved], %o1
+
+	/* And bamf back to where we belong!  */
+	ta	0x6f
+
+END(__longjmp)
+
+libc_hidden_def (__longjmp)