diff options
| -rw-r--r-- | include/asm-x86/Kbuild | 2 | ||||
| -rw-r--r-- | include/asm-x86/byteorder.h | 81 | ||||
| -rw-r--r-- | include/asm-x86/byteorder_32.h | 58 | ||||
| -rw-r--r-- | include/asm-x86/byteorder_64.h | 33 |
4 files changed, 70 insertions, 104 deletions
diff --git a/include/asm-x86/Kbuild b/include/asm-x86/Kbuild index 435074af1987..26b0dcda5ace 100644 --- a/include/asm-x86/Kbuild +++ b/include/asm-x86/Kbuild @@ -11,8 +11,6 @@ header-y += sigcontext32.h header-y += ucontext.h header-y += vsyscall32.h -unifdef-y += byteorder_32.h -unifdef-y += byteorder_64.h unifdef-y += e820.h unifdef-y += elf_32.h unifdef-y += elf_64.h diff --git a/include/asm-x86/byteorder.h b/include/asm-x86/byteorder.h index eb14b1870ed7..1f2d6d5bf20d 100644 --- a/include/asm-x86/byteorder.h +++ b/include/asm-x86/byteorder.h @@ -1,13 +1,72 @@ -#ifdef __KERNEL__ -# ifdef CONFIG_X86_32 -# include "byteorder_32.h" -# else -# include "byteorder_64.h" -# endif +#ifndef _ASM_X86_BYTEORDER_H +#define _ASM_X86_BYTEORDER_H + +#include <asm/types.h> +#include <linux/compiler.h> + +#ifdef __GNUC__ + +#ifdef __i386__ + +static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x) +{ +#ifdef CONFIG_X86_BSWAP + __asm__("bswap %0" : "=r" (x) : "0" (x)); #else -# ifdef __i386__ -# include "byteorder_32.h" -# else -# include "byteorder_64.h" -# endif + __asm__("xchgb %b0,%h0\n\t" /* swap lower bytes */ + "rorl $16,%0\n\t" /* swap words */ + "xchgb %b0,%h0" /* swap higher bytes */ + :"=q" (x) + : "0" (x)); #endif + return x; +} + +static __inline__ __attribute_const__ __u64 ___arch__swab64(__u64 val) +{ + union { + struct { __u32 a,b; } s; + __u64 u; + } v; + v.u = val; +#ifdef CONFIG_X86_BSWAP + asm("bswapl %0 ; bswapl %1 ; xchgl %0,%1" + : "=r" (v.s.a), "=r" (v.s.b) + : "0" (v.s.a), "1" (v.s.b)); +#else + v.s.a = ___arch__swab32(v.s.a); + v.s.b = ___arch__swab32(v.s.b); + asm("xchgl %0,%1" : "=r" (v.s.a), "=r" (v.s.b) : "0" (v.s.a), "1" (v.s.b)); +#endif + return v.u; +} + +#else /* __i386__ */ + +static __inline__ __attribute_const__ __u64 ___arch__swab64(__u64 x) +{ + __asm__("bswapq %0" : "=r" (x) : "0" (x)); + return x; +} + +static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x) +{ + __asm__("bswapl %0" : "=r" (x) : "0" (x)); + return x; +} + +#endif + +/* Do not define swab16. Gcc is smart enough to recognize "C" version and + convert it into rotation or exhange. */ + +#define __arch__swab64(x) ___arch__swab64(x) +#define __arch__swab32(x) ___arch__swab32(x) + +#define __BYTEORDER_HAS_U64__ + +#endif /* __GNUC__ */ + +#include <linux/byteorder/little_endian.h> + +#endif /* _ASM_X86_BYTEORDER_H */ diff --git a/include/asm-x86/byteorder_32.h b/include/asm-x86/byteorder_32.h deleted file mode 100644 index a45470a8b74a..000000000000 --- a/include/asm-x86/byteorder_32.h +++ /dev/null @@ -1,58 +0,0 @@ -#ifndef _I386_BYTEORDER_H -#define _I386_BYTEORDER_H - -#include <asm/types.h> -#include <linux/compiler.h> - -#ifdef __GNUC__ - -/* For avoiding bswap on i386 */ -#ifdef __KERNEL__ -#endif - -static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x) -{ -#ifdef CONFIG_X86_BSWAP - __asm__("bswap %0" : "=r" (x) : "0" (x)); -#else - __asm__("xchgb %b0,%h0\n\t" /* swap lower bytes */ - "rorl $16,%0\n\t" /* swap words */ - "xchgb %b0,%h0" /* swap higher bytes */ - :"=q" (x) - : "0" (x)); -#endif - return x; -} - -static __inline__ __attribute_const__ __u64 ___arch__swab64(__u64 val) -{ - union { - struct { __u32 a,b; } s; - __u64 u; - } v; - v.u = val; -#ifdef CONFIG_X86_BSWAP - asm("bswapl %0 ; bswapl %1 ; xchgl %0,%1" - : "=r" (v.s.a), "=r" (v.s.b) - : "0" (v.s.a), "1" (v.s.b)); -#else - v.s.a = ___arch__swab32(v.s.a); - v.s.b = ___arch__swab32(v.s.b); - asm("xchgl %0,%1" : "=r" (v.s.a), "=r" (v.s.b) : "0" (v.s.a), "1" (v.s.b)); -#endif - return v.u; -} - -/* Do not define swab16. Gcc is smart enough to recognize "C" version and - convert it into rotation or exhange. */ - -#define __arch__swab64(x) ___arch__swab64(x) -#define __arch__swab32(x) ___arch__swab32(x) - -#define __BYTEORDER_HAS_U64__ - -#endif /* __GNUC__ */ - -#include <linux/byteorder/little_endian.h> - -#endif /* _I386_BYTEORDER_H */ diff --git a/include/asm-x86/byteorder_64.h b/include/asm-x86/byteorder_64.h deleted file mode 100644 index 5e86c868c75e..000000000000 --- a/include/asm-x86/byteorder_64.h +++ /dev/null @@ -1,33 +0,0 @@ -#ifndef _X86_64_BYTEORDER_H -#define _X86_64_BYTEORDER_H - -#include <asm/types.h> -#include <linux/compiler.h> - -#ifdef __GNUC__ - -static __inline__ __attribute_const__ __u64 ___arch__swab64(__u64 x) -{ - __asm__("bswapq %0" : "=r" (x) : "0" (x)); - return x; -} - -static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x) -{ - __asm__("bswapl %0" : "=r" (x) : "0" (x)); - return x; -} - -/* Do not define swab16. Gcc is smart enough to recognize "C" version and - convert it into rotation or exhange. */ - -#define __arch__swab32(x) ___arch__swab32(x) -#define __arch__swab64(x) ___arch__swab64(x) - -#endif /* __GNUC__ */ - -#define __BYTEORDER_HAS_U64__ - -#include <linux/byteorder/little_endian.h> - -#endif /* _X86_64_BYTEORDER_H */ |