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authorRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
committerRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
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tree15f07c4c43d635959c6afee96bde71fb1b3614ee /sysdeps/alpha/setjmp.S
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+/* Copyright (C) 1992, 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. */
+
+#include <sysdep.h>
+
+/* The function __sigsetjmp_aux saves all the registers, but it can't
+ reliably access the stack or frame pointers, so we pass them in as
+ extra arguments. */
+ENTRY (__sigsetjmp)
+ lda $27, __sigsetjmp_aux/* Load address to jump to. */
+ bis $15, $15, $18 /* Pass FP as 3rd arg. */
+ bis $30, $30, $19 /* Pass SP as 4th arg. */
+ jmp $31, ($27), __sigsetjmp_aux /* Call __sigsetjmp_aux. */
+ .end __sigsetjmp