From 7f410893f8f8e93dc4b3673ea02afe1944806cb5 Mon Sep 17 00:00:00 2001
From: Torbjorn Granlund <tege@swox.com>
Date: Sat, 15 Feb 1992 17:52:41 +0000
Subject: [PATCH] Initial revision

---
 sysdeps/rs6000/memcopy.h | 86 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 sysdeps/rs6000/memcopy.h

diff --git a/sysdeps/rs6000/memcopy.h b/sysdeps/rs6000/memcopy.h
new file mode 100644
index 0000000000..36e9f2453b
--- /dev/null
+++ b/sysdeps/rs6000/memcopy.h
@@ -0,0 +1,86 @@
+/* Copyright (C) 1991 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 <sysdeps/generic/memcopy.h>
+
+#undef	OP_T_THRES
+#define OP_T_THRES 32
+
+#undef	BYTE_COPY_FWD
+#define BYTE_COPY_FWD(dst_bp, src_bp, nbytes)				      \
+  do									      \
+    {									      \
+      size_t __nbytes = nbytes;						      \
+      asm volatile("mtspr	1,%2\n"					      \
+		   "lsx		6,0,%1\n"				      \
+		   "stsx	6,0,%0" : /* No outputs.  */ :		      \
+		   "b" (dst_bp), "b" (src_bp), "r" (__nbytes) :		      \
+		   "6", "7", "8", "9", "10", "11", "12", "13");		      \
+      dst_bp += __nbytes;						      \
+      src_bp += __nbytes;						      \
+    } while (0)
+
+#undef	BYTE_COPY_BWD
+#define BYTE_COPY_BWD(dst_ep, src_ep, nbytes)				      \
+  do									      \
+    {									      \
+      size_t __nbytes;							      \
+      dst_ep -= __nbytes;						      \
+      src_ep -= __nbytes;						      \
+      asm volatile("mtspr	1,%2\n"					      \
+		   "lsx		6,0,%1\n"				      \
+		   "stsx	6,0,%0" : /* No outputs.  */ :		      \
+		   "b" (dst_ep), "b" (src_ep), "r" (__nbytes) :		      \
+		   "6", "7", "8", "9", "10", "11", "12", "13");		      \
+    } while (0)
+
+#undef	WORD_COPY_FWD
+#define WORD_COPY_FWD(dst_bp, src_bp, nbytes_left, nbytes)		      \
+  do									      \
+    {									      \
+      size_t __nblocks = (nbytes) / 32;					      \
+      if (__nblocks != 0)						      \
+	asm volatile("mtctr	%4\n"					      \
+		     "lsi	6,%1,32\n"				      \
+		     "ai	%1,%1,32\n"				      \
+		     "stsi	6,%0,32\n"				      \
+		     "ai	%0,%0,32\n"				      \
+		     "bdn	$-16" :					      \
+		     "=b" (dst_bp), "=b" (src_bp) :			      \
+		     "0" (dst_bp), "1" (src_bp), "r" (__nblocks) :	      \
+		     "6", "7", "8", "9", "10", "11", "12", "13");	      \
+      (nbytes_left) = (nbytes) % 32;					      \
+    } while (0)
+
+#undef	WORD_COPY_BWD
+#define WORD_COPY_BWD(dst_ep, src_ep, nbytes_left, nbytes)		      \
+  do									      \
+    {									      \
+      size_t __nblocks = (nbytes) / 32;					      \
+      if (__nblocks != 0)						      \
+	asm volatile("mtctr	%4\n"					      \
+		     "ai	%1,%1,-32\n"				      \
+		     "lsi	6,%1,32\n"				      \
+		     "ai	%0,%0,-32\n"				      \
+		     "stsi	6,%0,32\n"				      \
+		     "bdn	$-16" :					      \
+		     "=b" (dst_ep), "=b" (src_ep) :			      \
+		     "0" (dst_ep), "1" (src_ep), "r" (__nblocks) :	      \
+		     "6", "7", "8", "9", "10", "11", "12", "13");	      \
+      (nbytes_left) = (nbytes) % 32;					      \
+    } while (0)