initial import

1 files changed, 42 insertions, 0 deletions

diff --git a/sysdeps/m68k/bsd-_setjmp.S b/sysdeps/m68k/bsd-_setjmp.S
new file mode 100644
index 0000000000..a0b639306d
--- /dev/null
+++ b/sysdeps/m68k/bsd-_setjmp.S
@@ -0,0 +1,42 @@
+/* BSD `_setjmp' entry point to `sigsetjmp (..., 0)'.  m68k version.
+Copyright (C) 1994 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+/* This just does a tail-call to `__sigsetjmp (ARG, 0)'.
+   We cannot do it in C because it must be a tail-call, so frame-unwinding
+   in setjmp doesn't clobber the state restored by longjmp.  */
+
+#include <sysdep.h>
+
+#ifdef MOTOROLA_SYNTAX
+#define d0 %d0
+#define d1 %d1
+#define PUSH(reg)	move.l reg, -(%esp)
+#define POP(reg)	move.l (%esp)+, reg
+#else
+#define PUSH(reg)	movel reg, sp@-
+#define POP(reg)	movel sp@+, reg
+#endif
+
+ENTRY (_setjmp)
+	POP (d0)		/* Pop return PC.  */
+	POP (d1)		/* Pop jmp_buf argument.  */
+	PUSH (#0)		/* Push second argument of zero.  */
+	PUSH (d1)		/* Push back first argument.  */
+	PUSH (d0)		/* Push back return PC.  */
+	jmp C_SYMBOL_NAME (__sigsetjmp)