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1 | \ ========== Copyright Header Begin ========================================== |
2 | \ | |
3 | \ Hypervisor Software File: contigph.fth | |
4 | \ | |
5 | \ Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved. | |
6 | \ | |
7 | \ - Do no alter or remove copyright notices | |
8 | \ | |
9 | \ - Redistribution and use of this software in source and binary forms, with | |
10 | \ or without modification, are permitted provided that the following | |
11 | \ conditions are met: | |
12 | \ | |
13 | \ - Redistribution of source code must retain the above copyright notice, | |
14 | \ this list of conditions and the following disclaimer. | |
15 | \ | |
16 | \ - Redistribution in binary form must reproduce the above copyright notice, | |
17 | \ this list of conditions and the following disclaimer in the | |
18 | \ documentation and/or other materials provided with the distribution. | |
19 | \ | |
20 | \ Neither the name of Sun Microsystems, Inc. or the names of contributors | |
21 | \ may be used to endorse or promote products derived from this software | |
22 | \ without specific prior written permission. | |
23 | \ | |
24 | \ This software is provided "AS IS," without a warranty of any kind. | |
25 | \ ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, | |
26 | \ INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A | |
27 | \ PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN | |
28 | \ MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR | |
29 | \ ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR | |
30 | \ DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN | |
31 | \ OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR | |
32 | \ FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE | |
33 | \ DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, | |
34 | \ ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF | |
35 | \ SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. | |
36 | \ | |
37 | \ You acknowledge that this software is not designed, licensed or | |
38 | \ intended for use in the design, construction, operation or maintenance of | |
39 | \ any nuclear facility. | |
40 | \ | |
41 | \ ========== Copyright Header End ============================================ | |
42 | id: @(#)contigph.fth 1.7 95/08/17 | |
43 | purpose: | |
44 | copyright: Copyright 1990 Sun Microsystems, Inc. All Rights Reserved | |
45 | ||
46 | \ contiguous-range scans the given address range to ensure that the | |
47 | \ mappings contained within that range are physically contiguous. | |
48 | \ If not, the length is reduced so that the mappings within the reduced | |
49 | \ range are physically contiguous. This is an error check, because there | |
50 | \ is at least one known FCode driver (old ECL frame buffer driver) which | |
51 | \ attempts to free a larger range than it allocated. | |
52 | ||
53 | : contiguous-range ( adr len -- adr len' ) | |
54 | over >physical 2over bounds ?do ( adr len padr space ) | |
55 | 2dup i >physical d= 0= if ( adr len padr space ) | |
56 | 2swap ( padr space adr len ) | |
57 | diagnostic-mode? if | |
58 | ." Warning: freeing a range of virtual memory that is not " cr | |
59 | ." mapped to physically-contiguous pages." cr | |
60 | ." Start address " over .h ." Length " dup .h | |
61 | ." Error address " i .h cr | |
62 | then | |
63 | drop ( padr space adr ) | |
64 | i mmu-pagesize round-down over - ( padr space adr len' ) | |
65 | 2swap leave ( adr len' padr space ) | |
66 | then ( adr len padr space ) | |
67 | swap mmu-pagesize + swap ( adr len padr' space ) | |
68 | mmu-pagesize +loop ( adr len padr space ) | |
69 | 2drop ( adr len ) | |
70 | ; | |
71 | ' contiguous-range is check-range |