diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/arm/include/asm/swab.h')
-rw-r--r-- | ANDROID_3.4.5/arch/arm/include/asm/swab.h | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/ANDROID_3.4.5/arch/arm/include/asm/swab.h b/ANDROID_3.4.5/arch/arm/include/asm/swab.h deleted file mode 100644 index b859d82e..00000000 --- a/ANDROID_3.4.5/arch/arm/include/asm/swab.h +++ /dev/null @@ -1,73 +0,0 @@ -/* - * arch/arm/include/asm/byteorder.h - * - * ARM Endian-ness. In little endian mode, the data bus is connected such - * that byte accesses appear as: - * 0 = d0...d7, 1 = d8...d15, 2 = d16...d23, 3 = d24...d31 - * and word accesses (data or instruction) appear as: - * d0...d31 - * - * When in big endian mode, byte accesses appear as: - * 0 = d24...d31, 1 = d16...d23, 2 = d8...d15, 3 = d0...d7 - * and word accesses (data or instruction) appear as: - * d0...d31 - */ -#ifndef __ASM_ARM_SWAB_H -#define __ASM_ARM_SWAB_H - -#include <linux/compiler.h> -#include <linux/types.h> - -#if !defined(__STRICT_ANSI__) || defined(__KERNEL__) -# define __SWAB_64_THRU_32__ -#endif - -#if defined(__KERNEL__) -#if __LINUX_ARM_ARCH__ >= 6 - -static inline __attribute_const__ __u32 __arch_swahb32(__u32 x) -{ - __asm__ ("rev16 %0, %1" : "=r" (x) : "r" (x)); - return x; -} -#define __arch_swahb32 __arch_swahb32 -#define __arch_swab16(x) ((__u16)__arch_swahb32(x)) - -static inline __attribute_const__ __u32 __arch_swab32(__u32 x) -{ - __asm__ ("rev %0, %1" : "=r" (x) : "r" (x)); - return x; -} -#define __arch_swab32 __arch_swab32 - -#endif -#endif - -#if !defined(__KERNEL__) || __LINUX_ARM_ARCH__ < 6 -static inline __attribute_const__ __u32 __arch_swab32(__u32 x) -{ - __u32 t; - -#ifndef __thumb__ - if (!__builtin_constant_p(x)) { - /* - * The compiler needs a bit of a hint here to always do the - * right thing and not screw it up to different degrees - * depending on the gcc version. - */ - asm ("eor\t%0, %1, %1, ror #16" : "=r" (t) : "r" (x)); - } else -#endif - t = x ^ ((x << 16) | (x >> 16)); /* eor r1,r0,r0,ror #16 */ - - x = (x << 24) | (x >> 8); /* mov r0,r0,ror #8 */ - t &= ~0x00FF0000; /* bic r1,r1,#0x00FF0000 */ - x ^= (t >> 8); /* eor r0,r0,r1,lsr #8 */ - - return x; -} -#define __arch_swab32 __arch_swab32 - -#endif - -#endif |