Add missing file from previous IA-64 longjmp commit.

sysdeps/unix/sysv/linux/ia64/____longjmp_chk.S

@@ -0,0 +1,48 @@
+/* Copyright (C) 2009 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 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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+	.section .rodata.str1.8,"aMS",@progbits,1
+	.align 8
+.LC0:
+	.string "longjmp causes uninitialized stack frame"
+
+	.section .sdata,"aws",@progbits
+	.align 8
+	.type	longjmp_msg,@object
+longjmp_msg:
+	data8	.LC0
+	.size	longjmp_msg, .-longjmp_msg
+
+#define __longjmp ____longjmp_chk
+
+#ifdef PIC
+#  define CALL_FAIL	__GI___fortify_fail
+#else
+#  define CALL_FAIL	__fortify_fail
+#endif
+
+#define CHECK_RSP(reg) \
+	cmp.ltu p0, p8 = reg, r12;				\
+(p8)	br.cond.dpnt .Lok;;					\
+	addl r28 = @ltoffx(longjmp_msg#), r1;;			\
+	ld8.mov r28 = [r28], longjmp_msg#;;			\
+	ld8 out0 = [r28];					\
+	br.call.sptk.many b0 = CALL_FAIL#;;			\
+.Lok:
+
+#include "__longjmp.S"