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1 | \ ========== Copyright Header Begin ========================================== |
2 | \ | |
3 | \ Hypervisor Software File: dropin.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: @(#)dropin.fth 1.3 01/04/06 | |
43 | purpose: | |
44 | copyright: Copyright 1994-2001 Sun Microsystems, Inc. All Rights Reserved | |
45 | ||
46 | headerless | |
47 | ||
48 | fload ${BP}/pkg/decompressor/data.fth | |
49 | fload ${BP}/pkg/decompressor/sparc/decomp.fth | |
50 | fload ${BP}/pkg/decompressor/decompress.fth | |
51 | ||
52 | \ The format of a compressed dropin: | |
53 | \ Dropin Header | |
54 | \ 4 bytes magic-number = COMP | |
55 | \ 4 bytes size = dropinhdr->size | |
56 | \ 4 bytes comp-type | |
57 | \ 4 bytes decomp-size | |
58 | ||
59 | : dropin-compressed? ( header -- flag ) | |
60 | \ Caution here.. | |
61 | [ 0 to di-header ] | |
62 | dup [ di-size ] literal + l@ ( header size ) | |
63 | swap [ di-image ] literal + ( size data-ptr ) | |
64 | dup l@ h# 434f4d50 = ( size data-ptr comp? ) | |
65 | swap 4 + l@ ( size comp? size ) | |
66 | rot = and ( flag ) | |
67 | ; | |
68 | ||
69 | \ | |
70 | \ These two are the compressed dropin support entry points. | |
71 | \ | |
72 | overload: (dropin>data) ( -- data,len ) | |
73 | di-image di-size l@ | |
74 | di-header dropin-compressed? if ( data len ) | |
75 | [ also decompressor ] | |
76 | 2dup do-decompress if ( data len data' len' ) | |
77 | [ 0 to di-header ] ( data len data' len' ) | |
78 | 2swap 2drop ( data' len' ) | |
79 | over /di-header - dup ( data' len' di-hdr di-hdr ) | |
80 | di-header swap /di-header move ( data' len' di-hdr ) | |
81 | h# 434f4d50 swap ( data' len' data di-hdr ) | |
82 | [ di-exp ] literal + l! ( data' len' ) | |
83 | then ( data len ) | |
84 | [ previous ] | |
85 | then ( data len ) | |
86 | ; | |
87 | ||
88 | \ When the compressed data is copied into memory we also copy the dropin | |
89 | \ header, the (dropin>data) routine will have marked the di-exp field | |
90 | \ with the COMP flag so that this routine knows to release the memory that | |
91 | \ the decompressed data is living in. | |
92 | : (release-di-data) ( data len -- ) | |
93 | [ 0 to di-header ] | |
94 | over [ /di-header di-exp - ] literal - l@ h# 434f4d50 = if | |
95 | [ also decompressor ] | |
96 | finish-decompress | |
97 | [ previous ] | |
98 | else | |
99 | 2drop | |
100 | then | |
101 | ; | |
102 | ||
103 | ' (dropin>data) is dropin>data | |
104 | ' (release-di-data) is release-di-data | |
105 |