mischief/openbsd-src
1
0
Fork 0
mirror of https://github.com/openbsd/src.git synced 2025-01-10 06:47:55 -08:00
Code

use the 64-bit byte-swapping load/store instructions available starting

Browse Source 
with POWER7; ok dlg@ kettenis@
This commit is contained in:
naddy 2020-06-08 14:12:00 +00:00
parent b114dcfd7b
commit f4ac19f9dd
1 changed files with 9 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
sys/arch/powerpc64/include/endian.h
View File

@ -1,4 +1,4 @@
/* $OpenBSD: endian.h,v 1.1 2020/05/16 17:11:14 kettenis Exp $ */
/* $OpenBSD: endian.h,v 1.2 2020/06/08 14:12:00 naddy Exp $ */
/*-
* Copyright (c) 1997 Niklas Hallqvist. All rights reserved.
@ -36,7 +36,7 @@ __mswap16(volatile const __uint16_t *m)
__asm("lhbrx %0, 0, %1"
: "=r" (v)
: "r" (m), "m" (*m));
: "r" (m), "m" (*m));
return (v);
}
@ -48,7 +48,7 @@ __mswap32(volatile const __uint32_t *m)
__asm("lwbrx %0, 0, %1"
: "=r" (v)
: "r" (m), "m" (*m));
: "r" (m), "m" (*m));
return (v);
}
@ -56,11 +56,11 @@ __mswap32(volatile const __uint32_t *m)
static inline __uint64_t
__mswap64(volatile const __uint64_t *m)
{
__uint32_t *a = (__uint32_t *)m;
__uint64_t v;
v = (__uint64_t)__mswap32(a + 1) << 32 |
(__uint64_t)__mswap32(a);
__asm("ldbrx %0, 0, %1"
: "=r" (v)
: "r" (m), "m" (*m));
return (v);
}
@ -84,10 +84,9 @@ __swapm32(volatile __uint32_t *m, __uint32_t v)
static inline void
__swapm64(volatile __uint64_t *m, __uint64_t v)
{
__uint32_t *a = (__uint32_t *)m;
__swapm32(a + 1, v >> 32);
__swapm32(a, v);
__asm("stdbrx %1, 0, %2"
: "=m" (*m)
: "r" (v), "r" (m));
}
#define __HAVE_MD_SWAPIO