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1 | \ ========== Copyright Header Begin ========================================== |
2 | \ | |
3 | \ Hypervisor Software File: console.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: @(#)console.fth 1.8 01/05/30 | |
43 | purpose: Implements console character I/O | |
44 | copyright: Copyright 1990-2001 Sun Microsystems, Inc. All Rights Reserved | |
45 | ||
46 | \ Input and output selection mechanism | |
47 | ||
48 | headers | |
49 | nuser stdin 0 stdin ! | |
50 | nuser stdout 0 stdout ! | |
51 | ||
52 | headerless | |
53 | 0 value copy-down$ | |
54 | nuser pending-char | |
55 | nuser char-pending? | |
56 | ||
57 | : "read" ( -- adr len ) " read" ; \ Space savings | |
58 | : "write" ( -- adr len ) " write" ; \ Space savings | |
59 | : stdin-getchar ( -- okay? ) | |
60 | pending-char 1 "read" stdin @ $call-method 1 = | |
61 | ; | |
62 | : console-key? ( -- flag ) | |
63 | char-pending? @ if | |
64 | true | |
65 | else | |
66 | stdin-getchar dup if char-pending? on then ( flag ) | |
67 | then | |
68 | ; | |
69 | : console-key ( -- char ) | |
70 | char-pending? @ if | |
71 | pending-char c@ char-pending? off | |
72 | else | |
73 | begin stdin-getchar until | |
74 | pending-char c@ | |
75 | then | |
76 | ; | |
77 | nuser temp-char | |
78 | ||
79 | stand-init: Allocate some space for string relocation | |
80 | d# 82 alloc-mem is copy-down$ | |
81 | ; | |
82 | ||
83 | : (copy-down$) ( str,len -- str',len ) | |
84 | over d# 32 >> over d# 81 < and if ( str,len ) | |
85 | \ Sigh, we got a string we cant just send to FCODE. | |
86 | copy-down$ tuck over ( str,adr,len adr,len ) | |
87 | 2>r move 2r> ( adr,len ) | |
88 | then ( str,len ) | |
89 | ; | |
90 | ||
91 | \ break a write into 80 char chunks. | |
92 | : console-type ( adr len -- ) | |
93 | begin | |
94 | dup while ( adr,len ) | |
95 | 2dup d# 80 min ( adr,len adr,len' ) | |
96 | (copy-down$) "write" stdout @ $call-method >r ( adr,len ) | |
97 | r@ - swap r> + swap ( adr',len' ) | |
98 | repeat ( adr,len ) | |
99 | 2drop ( ) | |
100 | ; | |
101 | : console-emit ( char -- ) temp-char c! temp-char 1 console-type ; | |
102 | ||
103 | \ close the device if it is not the stdout device. | |
104 | : ?close ( ihandle|0 -- ) | |
105 | ?dup if | |
106 | stdout @ over <> if close-dev else drop then | |
107 | then | |
108 | ; | |
109 | : has-method? ( method-adr,len phandle -- flag ) | |
110 | find-method dup if nip then ( flag ) | |
111 | ; | |
112 | : .missing ( routine-adr,len type-adr,len -- ) | |
113 | ." The selected " type ." device has no " type ." routine" cr | |
114 | ; | |
115 | ||
116 | : pihandle= ( phandle ihandle -- flag ) | |
117 | dup if ihandle>phandle = else 2drop false then | |
118 | ; | |
119 | \ : already-opened? ( phandle -- flag ) stdout @ pihandle= ; | |
120 | ||
121 | headers | |
122 | : input ( pathname-adr,len -- ) | |
123 | 2dup locate-device if | |
124 | type ." not found." cr exit | |
125 | else ( pathname-adr,len phandle ) | |
126 | \ Exit if already selected. | |
127 | dup stdin @ pihandle= if | |
128 | 3drop exit | |
129 | then | |
130 | "read" rot has-method? if ( pathname-adr,len ) | |
131 | open-dev ?dup if ( ihandle ) | |
132 | stdin @ swap stdin ! ( old-ihandle ) | |
133 | ||
134 | " install-abort" stdin @ $call-method ( old-ihandle ) | |
135 | ?dup if ( old-ihandle ) | |
136 | " remove-abort" 2 pick $call-method ( old-ihandle ) | |
137 | close-dev | |
138 | then | |
139 | else | |
140 | ." Can't open input device." cr exit | |
141 | then | |
142 | else ( pathname-adr,len ) | |
143 | 2drop "read" " input" .missing exit | |
144 | then | |
145 | then | |
146 | ; | |
147 | ||
148 | variable stdout-#lines \ For communication with client program | |
149 | ' stdout-#lines " stdout-#lines" chosen-variable | |
150 | ' stdin " stdin" chosen-variable | |
151 | ' stdout " stdout" chosen-variable | |
152 | ||
153 | variable termemu-#lines \ For communication with terminal emulator | |
154 | ||
155 | headerless | |
156 | ||
157 | \ Set #lines in /chosen node for client programs to read | |
158 | : report-#lines ( -- ) | |
159 | termemu-#lines @ -1 <> if ( #lines ) | |
160 | \ The terminal emulator package set termemu-#lines | |
161 | termemu-#lines @ ( #lines ) | |
162 | else ( #lines ) | |
163 | ||
164 | \ termemu-#lines was not set, so check for a "#lines" property | |
165 | \ in the output device's package. | |
166 | ||
167 | " #lines" stdout @ ihandle>phandle get-package-property if ( ) | |
168 | \ No "#lines" property; report "unknown" | |
169 | -1 ( unknown-#lines ) | |
170 | else ( adr len ) | |
171 | \ Report the value of the "#lines" property | |
172 | get-encoded-int ( #lines ) | |
173 | then ( #lines ) | |
174 | then ( #lines ) | |
175 | stdout-#lines ! | |
176 | ; | |
177 | ||
178 | headers | |
179 | : output ( pathname-adr,len -- ) | |
180 | 2dup locate-device if ( pathname-adr,len ) | |
181 | type ." not found." cr exit | |
182 | else ( pathname-adr,len phandle ) | |
183 | \ Exit if already selected. | |
184 | dup stdout @ pihandle= if | |
185 | 3drop exit | |
186 | then | |
187 | "write" rot has-method? if ( pathname-adr,len ) | |
188 | -1 termemu-#lines ! \ Set value for terminal emulator to change | |
189 | open-dev ?dup if ( ihandle ) | |
190 | stdout @ swap stdout ! ( old-ihandle ) | |
191 | ?close | |
192 | report-#lines | |
193 | else | |
194 | ." Can't open output device." cr exit | |
195 | then | |
196 | else ( pathname-adr,len ) | |
197 | 2drop "write" " output" .missing exit | |
198 | then | |
199 | then | |
200 | ; | |
201 | ||
202 | : keyboard ( -- adr len ) " keyboard" ; | |
203 | : screen ( -- adr len ) " screen" ; | |
204 | : ttya ( -- adr len ) " ttya" ; | |
205 | : ttyb ( -- adr len ) " ttyb" ; | |
206 | ||
207 | : io ( pathname-adr,len -- ) | |
208 | 2dup 2>r ( path$ ) ( r: path$ ) | |
209 | 2r@ screen $= 2r> keyboard $= or if ( path$ ) | |
210 | 2drop screen output keyboard input exit | |
211 | then 2dup input output ( path$ ) | |
212 | ; | |
213 | ||
214 | : console-io ( -- ) | |
215 | stdin @ 0<> | |
216 | stdout @ 0<> and if | |
217 | char-pending? off | |
218 | ['] console-key? is key? | |
219 | ['] console-key is (key | |
220 | ['] console-emit is (emit | |
221 | ['] console-type is (type | |
222 | then | |
223 | ; | |
224 | ||
225 | headers |