Initial /boot stuff (from Mickey)

1 files changed, 100 insertions, 0 deletions

diff --git a/sys/arch/i386/stand/libsa/biostime.S b/sys/arch/i386/stand/libsa/biostime.S
new file mode 100644
index 00000000000..fbcc8c73fc9
--- /dev/null
+++ b/sys/arch/i386/stand/libsa/biostime.S
@@ -0,0 +1,100 @@
+/*	$OpenBSD: biostime.S,v 1.2 1997/03/31 03:12:12 weingart Exp $	*/
+
+/*
+ * Ported to boot 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
+ *
+ * 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 addr32	.byte 0x67
+#define data32	.byte 0x66
+
+/*
+# 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
+*/
+ENTRY(usleep)
+	pushl	%ebp
+	movl	%esp, %ebp
+	pushl	%ebx
+
+	movw	8(%ebp), %dx
+	movw	10(%ebp), %cx
+
+	call	_C_LABEL(prot_to_real)
+
+	movb	$0x86, %ah
+	int	$0x15
+	setnc	%ah
+
+	movb	%ah, %bl	# real_to_prot uses %eax
+
+	data32
+	call	_C_LABEL(real_to_prot)
+
+	movzbl	%bl, %eax
+
+	popl	%ebx
+	popl	%ebp
+	ret
+
+/*
+#
+#
+*/
+ENTRY(getsecs)
+	ret
+