From patchwork Tue Jun 10 23:13:13 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "H. Peter Anvin" X-Patchwork-Id: 4332811 Return-Path: X-Original-To: patchwork-linux-kbuild@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 740EEBEEAA for ; Tue, 10 Jun 2014 23:17:13 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 957D420154 for ; Tue, 10 Jun 2014 23:17:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2D7E720158 for ; Tue, 10 Jun 2014 23:17:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753716AbaFJXOG (ORCPT ); Tue, 10 Jun 2014 19:14:06 -0400 Received: from terminus.zytor.com ([198.137.202.10]:38714 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753219AbaFJXNz (ORCPT ); Tue, 10 Jun 2014 19:13:55 -0400 Received: from tazenda.hos.anvin.org ([IPv6:2601:9:7280:900:e269:95ff:fe35:9f3c]) (authenticated bits=0) by mail.zytor.com (8.14.7/8.14.5) with ESMTP id s5ANDRCd008151 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Tue, 10 Jun 2014 16:13:27 -0700 Received: from tazenda.hos.anvin.org (localhost [127.0.0.1]) by tazenda.hos.anvin.org (8.14.8/8.14.5) with ESMTP id s5ANDMeG016864; Tue, 10 Jun 2014 16:13:22 -0700 Received: (from hpa@localhost) by tazenda.hos.anvin.org (8.14.8/8.14.8/Submit) id s5ANDMIq016863; Tue, 10 Jun 2014 16:13:22 -0700 From: "H. Peter Anvin" To: Sam Ravnborg , linux-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org, linux-arch@vger.kernel.org Cc: Andy Lutomirski , Andrew Morton , Ingo Molnar , Thomas Gleixner , "H. Peter Anvin" Subject: [PATCH RFC 09/10] tools: Add common infrastructure for byte swapping Date: Tue, 10 Jun 2014 16:13:13 -0700 Message-Id: <1402441994-16780-10-git-send-email-hpa@zytor.com> X-Mailer: git-send-email 1.9.3 In-Reply-To: <1402441994-16780-1-git-send-email-hpa@zytor.com> References: <1402441994-16780-1-git-send-email-hpa@zytor.com> Sender: linux-kbuild-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kbuild@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Common selection infrastructure for picking the best byte swap method. Signed-off-by: H. Peter Anvin --- tools/include/tools/unaligned/be_swap.h | 15 +++++++++++++++ tools/include/tools/unaligned/le_swap.h | 15 +++++++++++++++ 2 files changed, 30 insertions(+) create mode 100644 tools/include/tools/unaligned/be_swap.h create mode 100644 tools/include/tools/unaligned/le_swap.h diff --git a/tools/include/tools/unaligned/be_swap.h b/tools/include/tools/unaligned/be_swap.h new file mode 100644 index 000000000000..f0effb8fc6ca --- /dev/null +++ b/tools/include/tools/unaligned/be_swap.h @@ -0,0 +1,15 @@ +#ifndef TOOLS_BE_SWAP_H +#define TOOLS_BE_SWAP_H + +#ifdef htole64 +/* Prefer the infrastructure if it exists */ +# include +#elif TOOLS_UNALIGNED_GCC >= 0x040800 +/* This version of gcc is new enough to have __builtin_bswap*() */ +# include +#else +/* This always works */ +# include +#endif + +#endif /* TOOLS_BE_SWAP_H */ diff --git a/tools/include/tools/unaligned/le_swap.h b/tools/include/tools/unaligned/le_swap.h new file mode 100644 index 000000000000..8952723c1dff --- /dev/null +++ b/tools/include/tools/unaligned/le_swap.h @@ -0,0 +1,15 @@ +#ifndef TOOLS_LE_SWAP_H +#define TOOLS_LE_SWAP_H + +#ifdef htobe64 +/* Prefer the infrastructure if it exists */ +# include +#elif TOOLS_UNALIGNED_GCC >= 0x040800 +/* This version of gcc is new enough to have __builtin_bswap*() */ +# include +#else +/* This always works */ +# include +#endif + +#endif /* TOOLS_LE_SWAP_H */