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1 | \ ========== Copyright Header Begin ========================================== |
2 | \ | |
3 | \ Hypervisor Software File: meta1.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: @(#)meta1.fth 2.9 03/12/08 13:22:34 | |
43 | purpose: | |
44 | copyright: Copyright 1990-2003 Sun Microsystems, Inc. All Rights Reserved | |
45 | copyright: Copyright 1985-1990 Bradley Forthware | |
46 | copyright: Use is subject to license terms. | |
47 | ||
48 | \ Meta compiler. Host system: F83 Target system: 68K F83 | |
49 | ||
50 | \ Variables and store don't work very well. Use "is" instead. | |
51 | create meta.f ," meta1.fth 2.9 03/12/08" | |
52 | ||
53 | only forth also definitions | |
54 | \ | |
55 | \ These are OK to leave permenantly installed because the meta compiler | |
56 | \ never gets saved into an image | |
57 | \ | |
58 | headers | |
59 | defer meta-xref-on ' noop is meta-xref-on | |
60 | defer meta-xref-off ' noop is meta-xref-off | |
61 | [ifnexist] xref-header-hook | |
62 | \ Bootstrapping.. | |
63 | defer xref-header-hook ' noop is xref-header-hook | |
64 | defer xref-find-hook ' noop is xref-find-hook | |
65 | [then] | |
66 | [ifnexist] xref-hide-hook | |
67 | \ Bootstrapping.. | |
68 | defer xref-hide-hook ' noop is xref-hide-hook | |
69 | defer xref-reveal-hook ' noop is xref-reveal-hook | |
70 | [then] | |
71 | [ifnexist] xref-string-hook | |
72 | \ Bootstrapping | |
73 | defer xref-string-hook ' noop is xref-string-hook | |
74 | [then] | |
75 | ||
76 | vocabulary meta | |
77 | vocabulary symbols | |
78 | vocabulary labels | |
79 | ||
80 | \ This will be set later | |
81 | 0 constant compilation-base | |
82 | ||
83 | 0 constant origin-t | |
84 | variable dp-t | |
85 | variable current-t | |
86 | variable context-t | |
87 | ||
88 | \ Return the host address where the given target address is being compiled | |
89 | : >hostaddr ( target-address -- host-address ) | |
90 | origin-t - compilation-base + | |
91 | ; | |
92 | : hostaddr> ( host-address -- target-address ) | |
93 | compilation-base - origin-t + | |
94 | ; | |
95 | ||
96 | : allot-t ( #bytes -- ) dp-t +! ; | |
97 | ||
98 | : here-t ( -- target-adr ) dp-t @ ; | |
99 | ||
100 | : target-image ( l.adr -- ) is compilation-base ; | |
101 | : org ( adr -- ) dup dp-t ! is origin-t ; | |
102 | ||
103 | \ voc-ptr is the address of the first thread | |
104 | ||
105 | : $sfind ( adr len -- acf [ -1 | 1 ] | adr len false ) | |
106 | $canonical ['] symbols $vfind | |
107 | ; | |
108 | ||
109 | \ Version that allows target variables and constants to be interpreted | |
110 | \ : xconstant ( n -- ) | |
111 | \ current link@ >r context link@ >r [compile] labels definitions | |
112 | \ lastword canonical "create , | |
113 | \ r> context link! r> current link! | |
114 | \ does> @ | |
115 | \ ; | |
116 | \ | |
117 | \ Version that doesn't | |
118 | : xconstant ( n -- ) drop ; | |
119 | ||
120 | \ This is a version of create that creates a word in a specific vocabulary. | |
121 | \ The vocabulary is passed as an explicit argument. This would be somewhat | |
122 | \ easier if the search-order stuff were implemented in a less "hard-wired" | |
123 | \ manner. | |
124 | ||
125 | : $vcreate ( adr len voc-cfa -- ) | |
126 | context link@ >r current link@ >r warning @ >r | |
127 | context link! definitions | |
128 | warning off | |
129 | $create | |
130 | r> warning ! r> current link! r> context link! | |
131 | ; | |
132 | \ : vcreate ( str voc-cfa -- ) count $vcreate ; |