/usr/s390x-linux-gnu/include/asm/swab.h is in linux-libc-dev-s390x-cross 4.9.25-1cross1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 | #ifndef _S390_SWAB_H
#define _S390_SWAB_H
/*
* S390 version
* Copyright IBM Corp. 1999
* Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
*/
#include <linux/types.h>
#ifndef __s390x__
# define __SWAB_64_THRU_32__
#endif
#ifdef __s390x__
static __inline__ __u64 __arch_swab64p(const __u64 *x)
{
__u64 result;
__asm__ volatile("lrvg %0,%1" : "=d" (result) : "m" (*x));
return result;
}
#define __arch_swab64p __arch_swab64p
static __inline__ __u64 __arch_swab64(__u64 x)
{
__u64 result;
__asm__ volatile("lrvgr %0,%1" : "=d" (result) : "d" (x));
return result;
}
#define __arch_swab64 __arch_swab64
static __inline__ void __arch_swab64s(__u64 *x)
{
*x = __arch_swab64p(x);
}
#define __arch_swab64s __arch_swab64s
#endif /* __s390x__ */
static __inline__ __u32 __arch_swab32p(const __u32 *x)
{
__u32 result;
__asm__ volatile(
#ifndef __s390x__
" icm %0,8,%O1+3(%R1)\n"
" icm %0,4,%O1+2(%R1)\n"
" icm %0,2,%O1+1(%R1)\n"
" ic %0,%1"
: "=&d" (result) : "Q" (*x) : "cc");
#else /* __s390x__ */
" lrv %0,%1"
: "=d" (result) : "m" (*x));
#endif /* __s390x__ */
return result;
}
#define __arch_swab32p __arch_swab32p
#ifdef __s390x__
static __inline__ __u32 __arch_swab32(__u32 x)
{
__u32 result;
__asm__ volatile("lrvr %0,%1" : "=d" (result) : "d" (x));
return result;
}
#define __arch_swab32 __arch_swab32
#endif /* __s390x__ */
static __inline__ __u16 __arch_swab16p(const __u16 *x)
{
__u16 result;
__asm__ volatile(
#ifndef __s390x__
" icm %0,2,%O1+1(%R1)\n"
" ic %0,%1\n"
: "=&d" (result) : "Q" (*x) : "cc");
#else /* __s390x__ */
" lrvh %0,%1"
: "=d" (result) : "m" (*x));
#endif /* __s390x__ */
return result;
}
#define __arch_swab16p __arch_swab16p
#endif /* _S390_SWAB_H */
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