[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / avr32 / include / asm / swab.h

/*
 * AVR32 byteswapping functions.
 */
#ifndef __ASM_AVR32_SWAB_H
#define __ASM_AVR32_SWAB_H

#include <linux/types.h>
#include <linux/compiler.h>

#define __SWAB_64_THRU_32__

#ifdef __CHECKER__
extern unsigned long __builtin_bswap_32(unsigned long x);
extern unsigned short __builtin_bswap_16(unsigned short x);
#endif

/*
 * avr32-linux-gcc versions earlier than 4.2 improperly sign-extends
 * the result.
 */
#if !(__GNUC__ == 4 && __GNUC_MINOR__ < 2)
static inline __attribute_const__ __u16 __arch_swab16(__u16 val)
{
	return __builtin_bswap_16(val);
}
#define __arch_swab16 __arch_swab16

static inline __attribute_const__ __u32 __arch_swab32(__u32 val)
{
	return __builtin_bswap_32(val);
}
#define __arch_swab32 __arch_swab32
#endif

#endif /* __ASM_AVR32_SWAB_H */
Commit	Line	Data
292b4d09 HH	1	/*
	2	* AVR32 byteswapping functions.
	3	*/
	4	#ifndef __ASM_AVR32_SWAB_H
	5	#define __ASM_AVR32_SWAB_H
	6
1c6ce704	7	#include <linux/types.h>
292b4d09 HH	8	#include <linux/compiler.h>
	9
	10	#define __SWAB_64_THRU_32__
	11
	12	#ifdef __CHECKER__
	13	extern unsigned long __builtin_bswap_32(unsigned long x);
	14	extern unsigned short __builtin_bswap_16(unsigned short x);
	15	#endif
	16
	17	/*
	18	* avr32-linux-gcc versions earlier than 4.2 improperly sign-extends
	19	* the result.
	20	*/
	21	#if !(__GNUC__ == 4 && __GNUC_MINOR__ < 2)
	22	static inline __attribute_const__ __u16 __arch_swab16(__u16 val)
	23	{
	24	return __builtin_bswap_16(val);
	25	}
	26	#define __arch_swab16 __arch_swab16
	27
	28	static inline __attribute_const__ __u32 __arch_swab32(__u32 val)
	29	{
	30	return __builtin_bswap_32(val);
	31	}
	32	#define __arch_swab32 __arch_swab32
	33	#endif
	34
	35	#endif /* __ASM_AVR32_SWAB_H */