diff options
Diffstat (limited to 'sys/arch/vax/stand/common/romread.S')
| -rw-r--r-- | sys/arch/vax/stand/common/romread.S | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/sys/arch/vax/stand/common/romread.S b/sys/arch/vax/stand/common/romread.S new file mode 100644 index 00000000000..4de1e0a90f8 --- /dev/null +++ b/sys/arch/vax/stand/common/romread.S @@ -0,0 +1,92 @@ +/* $OpenBSD: romread.S,v 1.1 2002/06/11 09:36:23 hugh Exp $ */ +/* $NetBSD: romread.S,v 1.1 2002/02/24 01:04:25 matt Exp $ */ +/* + * Copyright (c) 1995 Ludd, University of Lule}, Sweden. + * All rights reserved. + * + * This code is derived from software contributed to Ludd by + * Bertram Barth. + * + * 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 at Ludd, University of + * Lule}, Sweden and its contributors. + * 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 AUTHOR 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. + */ + + /* All bugs are subject to removal without further notice */ + + + +#include "../include/asm.h" + +/* + * read750 (int block, int *regs) + */ +ENTRY(read750, 0xFFE) + movl 8(ap), r8 + movl 4(r8), r1 + movl 8(r8), r2 + movl 12(r8), r3 + movl 24(r8), r6 + clrl r5 + movl 4(ap), r8 + pushl $0 + movl $0, 4(sp) + movl fp, 0xf0000 # ragge ??? + jsb (r6) + movl 0xf0000, fp + ret + +/* + * romread_uvax (int lbn, int size, void *buf, struct rpb *rpb) + */ +ENTRY(romread_uvax, 0xFFE) + movl 16(ap),r11 # restore boot-contents of %r11 (rpb) + movl 52(r11), r7 # load iovec/bqo into %r7 + addl3 (r7), r7, r6 # load qio into %r6 + pushl r11 # base of rpb + pushl $0 # virtual-flag + pushl $33 # read-logical-block + pushl 4(ap) # lbn to start reading + pushl 8(ap) # number of bytes to read + pushl 12(ap) # buffer-address + calls $6, (r6) # call the qio-routine + ret # %r0 holds the result + +/* + * romwrite_uvax (int lbn, int size, void *buf, struct rpb *rpb) + */ +ENTRY(romwrite_uvax, 0xFFE) + movl 16(ap), r11 # restore boot-contents of %r11 (rpb) + movl 52(r11), r7 # load iovec/bqo into %r7 + addl3 (r7), r7, r6 # load qio into %r6 + pushl r11 # base of rpb + pushl $0 # virtual-flag + pushl $32 # write-logical-block + pushl 4(ap) # lbn to start reading + pushl 8(ap) # number of bytes to read + pushl 12(ap) # buffer-address + calls $6, (r6) # call the qio-routine + ret # %r0 holds the result + |