Initial source

1 files changed, 145 insertions, 0 deletions

diff --git a/i386/i386at/kdasm.S b/i386/i386at/kdasm.S
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+/* 
+ * Mach Operating System
+ * Copyright (c) 1991,1990,1989 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.
+ */
+/* 
+ * Some inline code to speed up major block copies to and from the
+ * screen buffer.
+ * 
+ * Copyright Ing. C. Olivetti & C. S.p.A. 1988, 1989.
+ *  All rights reserved.
+ *
+ * orc!eugene	28 Oct 1988
+ *
+ */
+/*
+  Copyright 1988, 1989 by Olivetti Advanced Technology Center, Inc.,
+Cupertino, 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 Olivetti
+not be used in advertising or publicity pertaining to distribution
+of the software without specific, written prior permission.
+
+  OLIVETTI DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
+INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
+IN NO EVENT SHALL OLIVETTI 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 OUR OF OR IN CONNECTION
+WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+/* $ Header: $ */
+
+ 
+#include <mach/machine/asm.h>
+
+/*
+ * Function:	kd_slmwd()
+ *
+ *	This function "slams" a word (char/attr) into the screen memory using
+ *	a block fill operation on the 386.
+ *
+ */
+
+#define start 0x08(%ebp)
+#define count 0x0c(%ebp)
+#define value 0x10(%ebp)
+
+ENTRY(kd_slmwd)
+	pushl	%ebp
+	movl	%esp, %ebp
+	pushl	%edi
+
+	movl	start, %edi
+	movl	count, %ecx
+	movw	value, %ax
+	cld
+	rep
+	stosw
+
+	popl	%edi
+	leave
+	ret
+#undef start
+#undef count
+#undef value
+
+/*
+ * "slam up"
+ */
+
+#define from  0x08(%ebp)
+#define to    0x0c(%ebp)
+#define count 0x10(%ebp)
+ENTRY(kd_slmscu)
+	pushl	%ebp
+	movl	%esp, %ebp
+	pushl	%esi
+	pushl	%edi
+
+	movl	from, %esi
+	movl	to, %edi
+	movl	count, %ecx
+	cmpl	%edi, %esi
+	cld
+	rep
+	movsw
+
+	popl	%edi
+	popl	%esi
+	leave
+	ret
+
+/*
+ * "slam down"
+ */
+ENTRY(kd_slmscd)
+	pushl	%ebp
+	movl	%esp, %ebp
+	pushl	%esi
+	pushl	%edi
+
+	movl	from, %esi
+	movl	to, %edi
+	movl	count, %ecx
+	cmpl	%edi, %esi
+	std
+	rep
+	movsw
+	cld
+
+	popl	%edi
+	popl	%esi
+	leave
+	ret
+#undef from
+#undef to
+#undef count