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| author | Måns Rullgård <mans@mansr.com> | 2008-11-20 09:21:50 +0000 |
|---|---|---|
| committer | Måns Rullgård <mans@mansr.com> | 2008-11-20 09:21:50 +0000 |
| commit | 1a9e9a2fbd9c6e31d6bb391ddbaa181961f000fd (patch) | |
| tree | cb7b3ec430890c1c75bab65c51602c6d5c5a868f /libavcodec/sh4 | |
| parent | 6f14b19e48295729340c2fa6defb8dedb414ee0d (diff) | |
| download | ffmpeg-1a9e9a2fbd9c6e31d6bb391ddbaa181961f000fd.tar.gz | |
SH4: add macros for setting and restoring FPSCR.PR bit
Originally committed as revision 15887 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/sh4')
| -rw-r--r-- | libavcodec/sh4/sh4.h | 44 |
1 files changed, 44 insertions, 0 deletions
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 <mans@mansr.com> + * + * 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 */ |