X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=arch%2Fparisc%2Finclude%2Fasm%2Fbyteorder.h;h=58af2c5f5d61427d10380a3e49b1f60e9d5e3235;hb=0ce1c383681370964e7f77dd44506aeb3a6ba657;hp=db148313de5de079badd584c88184f25ced42fd8;hpb=6572a281cfd805dd54718597d6c33261b5be052b;p=linux-2.6-omap-h63xx.git diff --git a/arch/parisc/include/asm/byteorder.h b/arch/parisc/include/asm/byteorder.h index db148313de5..58af2c5f5d6 100644 --- a/arch/parisc/include/asm/byteorder.h +++ b/arch/parisc/include/asm/byteorder.h @@ -1,82 +1,6 @@ #ifndef _PARISC_BYTEORDER_H #define _PARISC_BYTEORDER_H -#include -#include - -#ifdef __GNUC__ - -static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 x) -{ - __asm__("dep %0, 15, 8, %0\n\t" /* deposit 00ab -> 0bab */ - "shd %%r0, %0, 8, %0" /* shift 000000ab -> 00ba */ - : "=r" (x) - : "0" (x)); - return x; -} - -static __inline__ __attribute_const__ __u32 ___arch__swab24(__u32 x) -{ - __asm__("shd %0, %0, 8, %0\n\t" /* shift xabcxabc -> cxab */ - "dep %0, 15, 8, %0\n\t" /* deposit cxab -> cbab */ - "shd %%r0, %0, 8, %0" /* shift 0000cbab -> 0cba */ - : "=r" (x) - : "0" (x)); - return x; -} - -static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x) -{ - unsigned int temp; - __asm__("shd %0, %0, 16, %1\n\t" /* shift abcdabcd -> cdab */ - "dep %1, 15, 8, %1\n\t" /* deposit cdab -> cbab */ - "shd %0, %1, 8, %0" /* shift abcdcbab -> dcba */ - : "=r" (x), "=&r" (temp) - : "0" (x)); - return x; -} - - -#if BITS_PER_LONG > 32 -/* -** From "PA-RISC 2.0 Architecture", HP Professional Books. -** See Appendix I page 8 , "Endian Byte Swapping". -** -** Pretty cool algorithm: (* == zero'd bits) -** PERMH 01234567 -> 67452301 into %0 -** HSHL 67452301 -> 7*5*3*1* into %1 -** HSHR 67452301 -> *6*4*2*0 into %0 -** OR %0 | %1 -> 76543210 into %0 (all done!) -*/ -static __inline__ __attribute_const__ __u64 ___arch__swab64(__u64 x) { - __u64 temp; - __asm__("permh,3210 %0, %0\n\t" - "hshl %0, 8, %1\n\t" - "hshr,u %0, 8, %0\n\t" - "or %1, %0, %0" - : "=r" (x), "=&r" (temp) - : "0" (x)); - return x; -} -#define __arch__swab64(x) ___arch__swab64(x) -#define __BYTEORDER_HAS_U64__ -#elif !defined(__STRICT_ANSI__) -static __inline__ __attribute_const__ __u64 ___arch__swab64(__u64 x) -{ - __u32 t1 = ___arch__swab32((__u32) x); - __u32 t2 = ___arch__swab32((__u32) (x >> 32)); - return (((__u64) t1 << 32) | t2); -} -#define __arch__swab64(x) ___arch__swab64(x) -#define __BYTEORDER_HAS_U64__ -#endif - -#define __arch__swab16(x) ___arch__swab16(x) -#define __arch__swab24(x) ___arch__swab24(x) -#define __arch__swab32(x) ___arch__swab32(x) - -#endif /* __GNUC__ */ - #include #endif /* _PARISC_BYTEORDER_H */