From 1a9e9a2fbd9c6e31d6bb391ddbaa181961f000fd Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?M=C3=A5ns=20Rullg=C3=A5rd?= Date: Thu, 20 Nov 2008 09:21:50 +0000 Subject: [PATCH] SH4: add macros for setting and restoring FPSCR.PR bit Originally committed as revision 15887 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/sh4/sh4.h | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 libavcodec/sh4/sh4.h diff --git a/libavcodec/sh4/sh4.h b/libavcodec/sh4/sh4.h new file mode 100644 index 0000000000..5678c920a4 --- /dev/null +++ b/libavcodec/sh4/sh4.h @@ -0,0 +1,44 @@ +/* + * Copyright (c) 2008 Mans Rullgard + * + * This file is part of FFmpeg. + * + * FFmpeg 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. + * + * FFmpeg 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 FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVCODEC_SH4_SH4_H +#define AVCODEC_SH4_SH4_H + +#ifdef __SH4__ +# define fp_single_enter(fpscr) \ + do { \ + __asm__ volatile ("sts fpscr, %0 \n\t" \ + "and %1, %0 \n\t" \ + "lds %0, fpscr \n\t" \ + : "=&r"(fpscr) : "r"(~(1<<19))); \ + } while (0) + +# define fp_single_leave(fpscr) \ + do { \ + __asm__ volatile ("or %1, %0 \n\t" \ + "lds %0, fpscr \n\t" \ + : "=&r"(fpscr) : "r"(1<<19)); \ + } while (0) +#else +# define fp_single_enter(fpscr) ((void)fpscr) +# define fp_single_leave(fpscr) +#endif + +#endif /* AVCODEC_SH4_SH4_H */