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Diffstat (limited to 'i386/i386at/kdasm.S')
| -rw-r--r-- | i386/i386at/kdasm.S | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/i386/i386at/kdasm.S b/i386/i386at/kdasm.S new file mode 100644 index 0000000..46b1ee6 --- /dev/null +++ b/i386/i386at/kdasm.S @@ -0,0 +1,145 @@ +/* + * 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 |