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ffmpeg / libavcodec / sh4 / sh4.h @ 2912e87a

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/*
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 * Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
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 *
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 * This file is part of Libav.
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 *
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 * Libav is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * Libav is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with Libav; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#ifndef AVCODEC_SH4_SH4_H
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#define AVCODEC_SH4_SH4_H
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#ifdef __SH4__
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#   define fp_single_enter(fpscr)                               \
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    do {                                                        \
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        __asm__ volatile ("sts   fpscr, %0     \n\t"            \
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                          "and   %1,    %0     \n\t"            \
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                          "lds   %0,    fpscr  \n\t"            \
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                          : "=&r"(fpscr) : "r"(~(1<<19)));      \
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    } while (0)
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#   define fp_single_leave(fpscr)                       \
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    do {                                                \
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        __asm__ volatile ("or    %1,    %0     \n\t"    \
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                          "lds   %0,    fpscr  \n\t"    \
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                          : "+r"(fpscr) : "r"(1<<19));  \
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    } while (0)
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#else
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#   define fp_single_enter(fpscr) ((void)fpscr)
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#   define fp_single_leave(fpscr)
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#endif
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#endif /* AVCODEC_SH4_SH4_H */