From 871480933a1c28f8a9fed4c4d34d06c439a7a422 Mon Sep 17 00:00:00 2001 From: Srikant Patnaik Date: Sun, 11 Jan 2015 12:28:04 +0530 Subject: Moved, renamed, and deleted files The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure. --- arch/mips/include/asm/swab.h | 59 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 arch/mips/include/asm/swab.h (limited to 'arch/mips/include/asm/swab.h') diff --git a/arch/mips/include/asm/swab.h b/arch/mips/include/asm/swab.h new file mode 100644 index 00000000..97c2f81b --- /dev/null +++ b/arch/mips/include/asm/swab.h @@ -0,0 +1,59 @@ +/* + * 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 +#include + +#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 + +/* + * Having already checked for CONFIG_CPU_MIPSR2, enable the + * optimized version for 64-bit kernel on r2 CPUs. + */ +#ifdef CONFIG_64BIT +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_64BIT */ +#endif /* CONFIG_CPU_MIPSR2 */ +#endif /* _ASM_SWAB_H */ -- cgit