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sh4.h
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1 /*
2  * Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #ifndef AVCODEC_SH4_SH4_H
22 #define AVCODEC_SH4_SH4_H
23 
24 #ifdef __SH4__
25 # define fp_single_enter(fpscr) \
26  do { \
27  __asm__ volatile ("sts fpscr, %0 \n\t" \
28  "and %1, %0 \n\t" \
29  "lds %0, fpscr \n\t" \
30  : "=&r"(fpscr) : "r"(~(1<<19))); \
31  } while (0)
32 
33 # define fp_single_leave(fpscr) \
34  do { \
35  __asm__ volatile ("or %1, %0 \n\t" \
36  "lds %0, fpscr \n\t" \
37  : "+r"(fpscr) : "r"(1<<19)); \
38  } while (0)
39 #else
40 # define fp_single_enter(fpscr) ((void)fpscr)
41 # define fp_single_leave(fpscr)
42 #endif
43 
44 #endif /* AVCODEC_SH4_SH4_H */