Annotation of sys/arch/vax/boot/common/romread.S, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: romread.S,v 1.1 2002/06/11 09:36:23 hugh Exp $ */
2: /* $NetBSD: romread.S,v 1.1 2002/02/24 01:04:25 matt Exp $ */
3: /*
4: * Copyright (c) 1995 Ludd, University of Lule}, Sweden.
5: * All rights reserved.
6: *
7: * This code is derived from software contributed to Ludd by
8: * Bertram Barth.
9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: * 3. All advertising materials mentioning features or use of this software
19: * must display the following acknowledgement:
20: * This product includes software developed at Ludd, University of
21: * Lule}, Sweden and its contributors.
22: * 4. The name of the author may not be used to endorse or promote products
23: * derived from this software without specific prior written permission
24: *
25: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
26: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
27: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
28: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
29: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
30: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
34: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35: */
36:
37: /* All bugs are subject to removal without further notice */
38:
39:
40:
41: #include "../include/asm.h"
42:
43: /*
44: * read750 (int block, int *regs)
45: */
46: ENTRY(read750, 0xFFE)
47: movl 8(ap), r8
48: movl 4(r8), r1
49: movl 8(r8), r2
50: movl 12(r8), r3
51: movl 24(r8), r6
52: clrl r5
53: movl 4(ap), r8
54: pushl $0
55: movl $0, 4(sp)
56: movl fp, 0xf0000 # ragge ???
57: jsb (r6)
58: movl 0xf0000, fp
59: ret
60:
61: /*
62: * romread_uvax (int lbn, int size, void *buf, struct rpb *rpb)
63: */
64: ENTRY(romread_uvax, 0xFFE)
65: movl 16(ap),r11 # restore boot-contents of %r11 (rpb)
66: movl 52(r11), r7 # load iovec/bqo into %r7
67: addl3 (r7), r7, r6 # load qio into %r6
68: pushl r11 # base of rpb
69: pushl $0 # virtual-flag
70: pushl $33 # read-logical-block
71: pushl 4(ap) # lbn to start reading
72: pushl 8(ap) # number of bytes to read
73: pushl 12(ap) # buffer-address
74: calls $6, (r6) # call the qio-routine
75: ret # %r0 holds the result
76:
77: /*
78: * romwrite_uvax (int lbn, int size, void *buf, struct rpb *rpb)
79: */
80: ENTRY(romwrite_uvax, 0xFFE)
81: movl 16(ap), r11 # restore boot-contents of %r11 (rpb)
82: movl 52(r11), r7 # load iovec/bqo into %r7
83: addl3 (r7), r7, r6 # load qio into %r6
84: pushl r11 # base of rpb
85: pushl $0 # virtual-flag
86: pushl $32 # write-logical-block
87: pushl 4(ap) # lbn to start reading
88: pushl 8(ap) # number of bytes to read
89: pushl 12(ap) # buffer-address
90: calls $6, (r6) # call the qio-routine
91: ret # %r0 holds the result
92:
CVSweb
![[BACK]](/icons/back.gif){kind=icon}
Return to romread.S CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / sys / arch / vax / boot / common