x86: merge byteorder_32/64.h
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
parent
d88203d1ab
commit
acbbbe9f5a
4 changed files with 70 additions and 104 deletions
|
@ -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
|
||||
|
|
|
@ -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 */
|
||||
|
|
|
@ -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 */
|
|
@ -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 */
|
Reference in a new issue