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Diffstat (limited to 'arch/tile/include/asm/swab.h')
| -rw-r--r-- | arch/tile/include/asm/swab.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/tile/include/asm/swab.h b/arch/tile/include/asm/swab.h new file mode 100644 index 00000000000..25c686a00f1 --- /dev/null +++ b/arch/tile/include/asm/swab.h @@ -0,0 +1,29 @@ +/* + * Copyright 2010 Tilera Corporation. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, version 2. + * + * This program 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, GOOD TITLE or + * NON INFRINGEMENT. See the GNU General Public License for + * more details. + */ + +#ifndef _ASM_TILE_SWAB_H +#define _ASM_TILE_SWAB_H + +/* Tile gcc is always >= 4.3.0, so we use __builtin_bswap. */ +#define __arch_swab32(x) __builtin_bswap32(x) +#define __arch_swab64(x) __builtin_bswap64(x) + +/* Use the variant that is natural for the wordsize. */ +#ifdef CONFIG_64BIT +#define __arch_swab16(x) (__builtin_bswap64(x) >> 48) +#else +#define __arch_swab16(x) (__builtin_bswap32(x) >> 16) +#endif + +#endif /* _ASM_TILE_SWAB_H */ |