1 files changed, 60 insertions, 0 deletions
diff --git a/sysdeps/ia64/strcat.S b/sysdeps/ia64/strcat.S
new file mode 100644
index 0000000000..d8afacbe09
--- /dev/null
+++ b/sysdeps/ia64/strcat.S
@@ -0,0 +1,60 @@
+/* IA-64 assembly version of the standard strcat() function.  
+   This file is part of the GNU C Library.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   Contributed by Dan Pop <Dan.Pop@cern.ch>.
+
+   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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/* Return: dest
+
+   Inputs:
+        in0:    dest
+        in1:    src
+
+   A straightforword implementation: strcpy(dest + strlen(dest), src).
+
+   Could be marginally optimised by inlining the code of strcpy() and
+   strlen(), to avoid the two function calls.  OTOH, by not doing that,
+   we avoid L1I cache pollution (code using strcat() is likely to also
+   use strcpy() and strlen(), so we already have a copy of these functions
+   in the cache).  */
+
+#include <sysdep.h>
+#undef ret
+
+#define src	in1
+#define dest	in0
+#define save_pfs loc0
+#define save_b0	loc1
+#define tmp	loc2
+#define rc	ret0
+
+ENTRY(strcat)
+	alloc 	save_pfs = ar.pfs, 2, 3, 2, 0
+	mov	save_b0 = b0
+	mov	out0 = dest
+	mov	tmp = gp ;;
+	br.call.sptk.many b0 = strlen# ;; // rc = strlen(dest);
+        mov	gp = tmp
+	add	out0 = dest, rc
+	mov	out1 = src
+	br.call.sptk.many b0 = strcpy# ;; // strcpy(dest + strlen(dest), src)
+	mov     gp = tmp
+	mov	rc = dest
+	mov	b0 = save_b0
+	mov	ar.pfs = save_pfs
+	br.ret.sptk.many b0
+END(strcat)