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| author | David Vrabel <david.vrabel@csr.com> | 2009-01-07 13:45:25 +0300 |
|---|---|---|
| committer | David Vrabel <david.vrabel@csr.com> | 2009-01-07 13:45:25 +0300 |
| commit | a23e66f3b8cfdedec14541e71ef29a754870a20c (patch) | |
| tree | f8ac23572982e92e6f8ae09c4039db627bdf53ee /arch/mips/include/asm/swab.h | |
| parent | 04c470adb01c62bb9bd663cfc4875cf0a4eb01ab (diff) | |
| parent | ede6f5aea054d3fb67c78857f7abdee602302043 (diff) | |
| download | linux-a23e66f3b8cfdedec14541e71ef29a754870a20c.tar.xz | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into for-upstream
Diffstat (limited to 'arch/mips/include/asm/swab.h')
| -rw-r--r-- | arch/mips/include/asm/swab.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/arch/mips/include/asm/swab.h b/arch/mips/include/asm/swab.h new file mode 100644 index 000000000000..88f1f7d555cb --- /dev/null +++ b/arch/mips/include/asm/swab.h @@ -0,0 +1,55 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 1996, 99, 2003 by Ralf Baechle + */ +#ifndef _ASM_SWAB_H +#define _ASM_SWAB_H + +#include <linux/compiler.h> +#include <asm/types.h> + +#define __SWAB_64_THRU_32__ + +#ifdef CONFIG_CPU_MIPSR2 + +static inline __attribute_const__ __u16 __arch_swab16(__u16 x) +{ + __asm__( + " wsbh %0, %1 \n" + : "=r" (x) + : "r" (x)); + + return x; +} +#define __arch_swab16 __arch_swab16 + +static inline __attribute_const__ __u32 __arch_swab32(__u32 x) +{ + __asm__( + " wsbh %0, %1 \n" + " rotr %0, %0, 16 \n" + : "=r" (x) + : "r" (x)); + + return x; +} +#define __arch_swab32 __arch_swab32 + +#ifdef CONFIG_CPU_MIPS64_R2 +static inline __attribute_const__ __u64 __arch_swab64(__u64 x) +{ + __asm__( + " dsbh %0, %1\n" + " dshd %0, %0" + : "=r" (x) + : "r" (x)); + + return x; +} +#define __arch_swab64 __arch_swab64 +#endif /* CONFIG_CPU_MIPS64_R2 */ +#endif /* CONFIG_CPU_MIPSR2 */ +#endif /* _ASM_SWAB_H */ |