minix/common/lib/libc/arch/vax/gen/bswap64.S
Gianluca Guida b6cbf7203b Import unmodified NetBSD libc in trunk
This patch imports the unmodified current version of NetBSD libc.
The NetBSD includes are in /nbsd_include, while the libc code itself is 
split between lib/nbsd_libc and common/lib/libc.
2011-02-14 19:36:03 +00:00

19 lines
407 B
ArmAsm

/* Written by Anders Magnusson. Public Domain */
#if defined(LIBC_SCCS) && !defined(lint)
.asciz "$NetBSD: bswap64.S,v 1.2 2005/12/24 08:33:32 matt Exp $"
#endif /* LIBC_SCCS and not lint */
#include <machine/asm.h>
ENTRY(bswap64, 0)
movq 4(%ap),%r3
rotl $-8,%r3,%r1
insv %r1,$16,$8,%r1
rotl $8,%r3,%r2
movb %r2,%r1
rotl $-8,%r4,%r0
insv %r0,$16,$8,%r0
rotl $8,%r4,%r2
movb %r2,%r0
ret