[src/nathanw_sa]: src/sys/arch/powerpc/include Inline bswap{16, 32} when the a...

[tsubai <tsubai%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/28eb9b5cd7c7
branches:  nathanw_sa
changeset: 504699:28eb9b5cd7c7
user:      tsubai <tsubai%NetBSD.org@localhost>
date:      Wed May 30 13:08:35 2001 +0000

description:
Inline bswap{16,32} when the argument is constant.

diffstat:

 sys/arch/powerpc/include/bswap.h     |  14 ++++++++++++++
 sys/arch/powerpc/include/byte_swap.h |  35 +++++++++++++++++++++++++++++++++++
 2 files changed, 49 insertions(+), 0 deletions(-)

diffs (57 lines):

diff -r 2df4c0a5b11f -r 28eb9b5cd7c7 sys/arch/powerpc/include/bswap.h
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/powerpc/include/bswap.h  Wed May 30 13:08:35 2001 +0000
@@ -0,0 +1,14 @@
+/*     $NetBSD: bswap.h,v 1.3.8.2 2001/05/30 13:08:35 tsubai Exp $     */
+
+#ifndef _POWERPC_BSWAP_H_
+#define _POWERPC_BSWAP_H_
+
+#include <sys/bswap.h>
+
+#ifdef __GNUC__
+#include <powerpc/byte_swap.h>
+#define bswap16(x) __bswap16(x)
+#define bswap32(x) __bswap32(x)
+#endif
+
+#endif /* _POWERPC_BSWAP_H_ */
diff -r 2df4c0a5b11f -r 28eb9b5cd7c7 sys/arch/powerpc/include/byte_swap.h
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/powerpc/include/byte_swap.h      Wed May 30 13:08:35 2001 +0000
@@ -0,0 +1,35 @@
+/*     $NetBSD: byte_swap.h,v 1.1.10.2 2001/05/30 13:08:35 tsubai Exp $        */
+
+/*-
+ * Copyright (c) 2001 Tsubai Masanari.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#define __bswap16_const(x) ((((x) & 0xff00) >> 8) | (((x) & 0x00ff) << 8))
+#define __bswap16(x) (__builtin_constant_p(x) ? __bswap16_const(x) : bswap16(x))
+
+#define __bswap32_const(x) \
+       ((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >>  8) | \
+        (((x) & 0x0000ff00) <<  8) | (((x) & 0x000000ff) << 24))
+#define __bswap32(x) (__builtin_constant_p(x) ? __bswap32_const(x) : bswap32(x))