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1 | \ ========== Copyright Header Begin ========================================== |
2 | \ | |
3 | \ Hypervisor Software File: fwfileop.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: @(#)fwfileop.fth 1.5 01/04/06 | |
43 | purpose: File I/O interface using Open Firmware | |
44 | copyright: Copyright 1994 FirmWorks All Rights Reserved | |
45 | copyright: Copyright 1994-2001 Sun Microsystems, Inc. All Rights Reserved | |
46 | ||
47 | \ Closes an open file, freeing its descriptor for reuse. | |
48 | ||
49 | headerless | |
50 | : _ofclose ( file# -- ) | |
51 | bfbase @ bflimit @ over - free-mem \ Hack! Hack! | |
52 | close-dev | |
53 | ; | |
54 | ||
55 | \ Writes "count" bytes from the buffer at address "adr" to a file. | |
56 | \ Returns the number of bytes actually written. | |
57 | ||
58 | : _ofwrite ( adr #bytes file# -- #written ) " write" rot $call-method ; | |
59 | ||
60 | \ Reads at most "count" bytes into the buffer at address "adr" from a file. | |
61 | \ Returns the number of bytes actually read. | |
62 | ||
63 | : _ofread ( adr #bytes file# -- #read ) " read" rot $call-method ; | |
64 | ||
65 | \ Positions to byte number "l.byte#" in a file | |
66 | ||
67 | : _ofseek ( d.byte# file# -- ) " seek" rot $call-method drop ; | |
68 | ||
69 | \ Returns the current size "l.size" of a file | |
70 | ||
71 | : _ofsize ( file# -- d.size ) " size" rot $call-method ; | |
72 | ||
73 | \ Prepares a file for later access. Name is the pathname of the file | |
74 | \ and mode is the mode (0 read, 1 write, 2 modify). If the operation | |
75 | \ succeeds, returns the addresses of routines to perform I/O on the | |
76 | \ open file and true. If the operation fails, returns false. | |
77 | ||
78 | : _ofopen | |
79 | ( name mode -- [ fid mode sizeop alignop closeop writeop readop ] okay? ) | |
80 | >r count open-dev | |
81 | dup 0= if r> 2drop false exit then ( fid ) | |
82 | r@ ['] _ofsize ['] _dfalign ['] _ofclose ['] _ofseek | |
83 | r@ r/o = if ['] nullwrite else ['] _ofwrite then | |
84 | r> w/o = if ['] nullread else ['] _ofread then | |
85 | true | |
86 | ; | |
87 | ||
88 | \ .( XXX fwfileop.fth: need ofmake ) cr | |
89 | ||
90 | stand-init: Install do-fopen | |
91 | ['] _ofopen to do-fopen | |
92 | ; | |
93 | ||
94 |