-/* $OpenBSD: biostime.S,v 1.3 1997/04/09 08:39:27 mickey Exp $ */
+/* $OpenBSD: biostime.S,v 1.4 1997/04/21 19:52:51 mickey Exp $ */
/*
- * Ported to boot 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
+ * Copyright (c) 1997 Michael Shalayeff
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by Michael Shalayeff.
+ * 4. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
*
- * Mach Operating System
- * Copyright (c) 1992, 1991 Carnegie Mellon University
- * All Rights Reserved.
- *
- * 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 Mellon
- * the rights to redistribute these changes.
*/
-
-/*
- Copyright 1988, 1989, 1990, 1991, 1992
- by Intel Corporation, Santa Clara, California.
-
- All Rights Reserved
-
-Permission to use, copy, modify, and distribute this software and
-its documentation for any purpose and without fee is hereby
-granted, provided that the above copyright notice appears in all
-copies and that both the copyright notice and this permission notice
-appear in supporting documentation, and that the name of Intel
-not be used in advertising or publicity pertaining to distribution
-of the software without specific, written prior permission.
-
-INTEL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
-INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
-IN NO EVENT SHALL INTEL BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
-CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
-LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
-NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
-WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-*/
-
#include <machine/asm.h>
#define _LOCORE
#include "biosdev.h"
#undef _LOCORE
/*
-# BIOS call "INT 15H Function 86H" to sleep for a set number of microseconds
-# Call with %ah = 0x86
-# %cx = time interval (high)
-# %dx = time interval (low)
-# Return:
-# If error
-# CF = set
-# else
-# CF = clear
-*/
+ * int usleep(u_long us);
+ * sleep for that number of microseconds
+ * returns nonzero if failed
+ */
ENTRY(usleep)
pushl %ecx
- pushl %edx
- movw 12(%esp), %dx
- movw 14(%esp), %cx
+ movl 8(%esp), %ecx
+ movw %cx, %dx
+ shrl $16, %ecx
movb $0x86, %ah
BIOSINT(0x15)
setnc %al
movzbl %al, %eax
- popl %edx
popl %ecx
ret
/*
-#
-#
-*/
+ *
+ */
ENTRY(getsecs)
ret
projects / openbsd / commitdiff