diff options
| author | dfr <dfr@FreeBSD.org> | 2000-10-04 17:53:03 +0000 |
|---|---|---|
| committer | dfr <dfr@FreeBSD.org> | 2000-10-04 17:53:03 +0000 |
| commit | 5135c38a27d3cf791a98f149db31afd9e1a5294a (patch) | |
| tree | 3a6ede195decd815dd3beddc3900c7b50bab5f32 /sys/libkern/ia64/byte_swap_2.S | |
| parent | a8379965c23bf71569dbac1e3f5c49bc1a1eea6d (diff) | |
| download | FreeBSD-src-5135c38a27d3cf791a98f149db31afd9e1a5294a.zip FreeBSD-src-5135c38a27d3cf791a98f149db31afd9e1a5294a.tar.gz | |
Next round of fixes to the ia64 code. This includes simulated clock and
disk drivers along with a load of fixes to context switching, fork
handling and a load of other stuff I can't remember now. This takes us as
far as start_init() before it dies. I guess now I will have to finish off
the VM system and syscall handling :-).
Diffstat (limited to 'sys/libkern/ia64/byte_swap_2.S')
| -rw-r--r-- | sys/libkern/ia64/byte_swap_2.S | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/sys/libkern/ia64/byte_swap_2.S b/sys/libkern/ia64/byte_swap_2.S new file mode 100644 index 0000000..c758184 --- /dev/null +++ b/sys/libkern/ia64/byte_swap_2.S @@ -0,0 +1,47 @@ +/* $FreeBSD$ */ +/* $NetBSD: byte_swap_2.S,v 1.2 1996/10/17 03:08:08 cgd Exp $ */ + +/* + * Copyright (c) 1996 Carnegie-Mellon University. + * All rights reserved. + * + * Author: Chris G. Demetriou + * + * Permission to use, copy, modify and distribute this software and + * its documentation is hereby granted, provided that both the copyright + * notice and this permission notice appear in all copies of the + * software, derivative works or modified versions, and any portions + * thereof, and that both notices appear in supporting documentation. + * + * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" + * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND + * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. + * + * Carnegie Mellon requests users of this software to return to + * + * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU + * School of Computer Science + * Carnegie Mellon University + * Pittsburgh PA 15213-3890 + * + * any improvements or extensions that they make and grant Carnegie the + * rights to redistribute these changes. + */ + +#include <machine/asm.h> + +#ifndef NAME +#define NAME byte_swap_2 +#endif + +/* + * Byte-swap a 2-byte quantity. (Convert 0x0123 to 0x2301.) + * + * Argument is an unsigned 2-byte integer (u_int16_t). + */ +ENTRY(NAME, 1) /* in0 = 0x0123 */ + extr.u ret0=in0,8,8 /* ret0 = 0x 01 */ + ;; + dep ret0=ret0,in0,8,8 /* ret0 = 0x2301 */ + br.ret.sptk.few rp +END(NAME) |
