1 files changed, 63 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/sparc64/setjmp.S b/libc/sysdeps/linux/sparc64/setjmp.S
new file mode 100644
index 000000000..b30c7d744
--- /dev/null
+++ b/libc/sysdeps/linux/sparc64/setjmp.S
@@ -0,0 +1,63 @@
+/* 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/>.  */
+
+/* __sigsetjmp is implemented in terms of the getcontext trap on
+   Linux/Sparc64.  */
+
+#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)
+
+/* int _setjmp(jmp_buf) */
+
+ENTRY(_setjmp)
+	ba	__sigsetjmp_local
+	 set	0, %o1
+END(_setjmp)
+libc_hidden_def(_setjmp)
+
+/* int setjmp(jmp_buf) */
+
+ENTRY(setjmp)
+	ba,pt	%xcc, __sigsetjmp_local
+	 set	1, %o1
+END(setjmp)
+
+/* int __sigsetjmp(jmp_buf, savemask)  */
+
+ENTRY(__sigsetjmp)
+__sigsetjmp_local:
+
+	/* Record whether the user is intending to save the sigmask.  */
+	st	%o1, [%o0 + O_mask_was_saved]
+
+	/* Load up our return value, as longjmp is going to override
+	   the jmp_buf on its way back.  */
+	mov	%g0, %g1
+
+	/* And call getcontext!  */
+	ta	0x6e
+
+	retl
+	 mov	%g1, %o0
+
+END(__sigsetjmp)
+libc_hidden_def(__sigsetjmp)