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1 | \ ========== Copyright Header Begin ========================================== |
2 | \ | |
3 | \ Hypervisor Software File: parse.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: @(#)parse.fth 1.2 00/04/04 | |
43 | purpose: | |
44 | copyright: Copyright 1998, 2000 Sun Microsystems, Inc. All Rights Reserved | |
45 | ||
46 | : next-descriptor ( addr1 -- next-addr ) | |
47 | dup c@ + | |
48 | ; | |
49 | ||
50 | : #remaining ( addr1 addr2 cnt1 -- cnt2 ) | |
51 | -rot swap - - | |
52 | ; | |
53 | ||
54 | : interface-descript? ( addr -- interface? ) | |
55 | 1+ c@ interface-descript = | |
56 | ; | |
57 | ||
58 | : alt0? ( addr -- ok? ) i-descript-alt-id c@ 0= ; | |
59 | ||
60 | : int-alt0? ( addr -- this-one? ) | |
61 | dup interface-descript? | |
62 | swap alt0? and | |
63 | ; | |
64 | ||
65 | \ loop through the descriptor as long as it is not an interface descriptor, | |
66 | \ alternative setting 0. When it is, return the start and remaining number of | |
67 | \ bytes in the descriptor. | |
68 | : find-int-descrips ( conf-adr ccnt -- int-adr ccnt2 ) | |
69 | >r ( R: cnt ) | |
70 | begin ( addr ) ( R: cnt ) | |
71 | dup next-descriptor ( addr1 addr2 ) | |
72 | tuck r> #remaining >r | |
73 | dup int-alt0? | |
74 | until | |
75 | r> | |
76 | ; | |
77 | ||
78 | \ Advance the address, decrement the count to the next interface descriptor | |
79 | \ if there is one. Watch out if input is already the last valid descriptor. | |
80 | \ Would ...do +loop work here? Not sure of the interaction with 32/64 bitness | |
81 | \ and addresses. | |
82 | : no-more-interfaces? ( iadr icnt -- iadr1 icnt1 no-more? ) | |
83 | 2dup + >r ( R: max-valid-address ) | |
84 | begin | |
85 | over next-descriptor ( iadr icnt iadr' ) ( R: max-valid ) | |
86 | r@ < if \ valid descriptor address | |
87 | >r dup next-descriptor | |
88 | tuck r> #remaining ( iadr' icnt' ) ( R: max-valid ) | |
89 | over int-alt0? if \ found the next interface descriptor | |
90 | false ( iadr1 icnt1 no-more? ) ( R: max-valid ) | |
91 | true \ interface descriptor found | |
92 | else | |
93 | false \ try next descriptor | |
94 | then | |
95 | else \ invalid descriptor address; walked out the end | |
96 | true ( iadr1 icnt1 no-more? ) ( R: max-valid ) | |
97 | true \ all descriptors used up | |
98 | then | |
99 | until | |
100 | r> drop | |
101 | ; |