Commit | Line | Data |
---|---|---|
4e754410 BJ |
1 | / |
2 | / Berkeley UNIX Pascal Assembler Kernel | |
3 | / | |
4 | .globl _interpret | |
5 | .globl _pcttot, _pdattim, _alloc, _free, _error, _fflush, _maxstk | |
6 | .globl _pputch, _pmessage, _pwrite, _pwril | |
7 | .globl atan, cos, exp, log, sin, sqrt | |
8 | .globl fptrap | |
9 | .globl _display, _dp, _lino, _draino | |
10 | .globl _seed, _randa, _randc, _randm, _randim | |
11 | .globl _atof | |
12 | .globl _argc, _argv, _errno | |
13 | .globl _file, _nodump, _pxpbuf, _pmflush | |
14 | .if FP | |
15 | fptrap: | |
16 | 4 | |
17 | .endif | |
18 | / | |
19 | indir = 0 | |
20 | return = 115 / jmp (lp) | |
21 | times = 43. | |
22 | lp = r5 | |
23 | lc = r4 | |
24 | error = 104000 ^ sys | |
25 | / | |
26 | ONE = 040200 /$1.0 | |
27 | HALF = 040000 /$.5 | |
28 | / | |
29 | _interpret: | |
30 | setl | |
31 | sys signal; 7.; onemt | |
32 | .if !FP | |
33 | sys signal; 4.; fptrap | |
34 | .endif | |
35 | .if FP | |
36 | sys signal; 4.; 0 | |
37 | .endif | |
38 | mov $_display,_dp | |
39 | mov $loop,lp | |
40 | mov 2(sp),lc | |
41 | mov sp,*_dp | |
42 | mov $_unit0,-(sp) | |
43 | mov $_unit1,-(sp) | |
44 | / | |
45 | / main interpreter loop | |
46 | / the pseudo-op 'return' | |
47 | / transfers here | |
48 | / | |
49 | loop: | |
50 | movb (lc)+,r0 | |
51 | add r0,r0 | |
52 | movb (lc)+,r3 | |
53 | jmp *optab(r0) | |
54 | badop: | |
55 | mov $EBADOP,_perrno | |
56 | error EBADOP | |
57 | /cloop: | |
58 | / movb (lc)+,r0 | |
59 | / mov r0,r1 | |
60 | / add r0,r0 | |
61 | / add $128.,r1 | |
62 | / ash $2,r1 | |
63 | / add $cntab,r1 | |
64 | / add $1,2(r1) | |
65 | / adc (r1) | |
66 | / movb (lc)+,r3 | |
67 | / jmp *optab(r0) | |
68 | /.bss | |
69 | /cntab: | |
70 | / .=.+1024. | |
71 | /.text | |
72 | .bss | |
73 | _perrno: .=.+2 | |
74 | .text | |
75 | onemt: | |
76 | setd | |
77 | / mov (sp)+,r0 | |
78 | / sub $2,r0 | |
79 | /.if SEPID | |
80 | / sys 61. /fetchi | |
81 | /.endif | |
82 | /.if !SEPID | |
83 | / mov (r0),r0 | |
84 | /.endif | |
85 | / bic $!377,r0 | |
86 | / mov r0,-(sp) | |
87 | mov _perrno,-(sp) | |
88 | jsr pc,_error | |
89 | /\f | |
90 | _ABORT: | |
91 | 4 | |
92 | _HALT: | |
93 | mov $EHALT,_perrno | |
94 | error EHALT | |
95 | _NODUMP: | |
96 | inc _nodump | |
97 | _BEG: | |
98 | mov (lc)+,r3 | |
99 | add $2,_dp | |
100 | mov *_dp,-(sp) | |
101 | mov lc,-(sp) | |
102 | add $10.,lc | |
103 | mov buf,-(sp) | |
104 | mov _file,-(sp) | |
105 | tst -(sp) | |
106 | mov sp,*_dp | |
107 | mov sp,r0 | |
108 | add r3,r0 | |
109 | cmp r0,sp | |
110 | bhi 9f | |
111 | cmp r0,_maxstk | |
112 | blos 9f | |
113 | tst r3 | |
114 | beq 2f | |
115 | 1: | |
116 | clr -(sp) | |
117 | cmp sp,r0 | |
118 | bhi 1b | |
119 | 2: | |
120 | mov *_dp,r1 | |
121 | mov sp,(r1) | |
122 | return | |
123 | 9: | |
124 | mov $ESTKOVFLO,_perrno | |
125 | error ESTKOVFLO | |
126 | _END: | |
127 | jsr pc,blkexit | |
128 | mov *_dp,sp | |
129 | tst (sp)+ | |
130 | mov (sp)+,_file | |
131 | mov (sp)+,buf | |
132 | tst (sp)+ | |
133 | mov (sp)+,*_dp | |
134 | cmp _dp,$_display+2 | |
135 | bhi 3f | |
136 | mov $_unit1,r0 | |
137 | mov FBUF(r0),-(sp) | |
138 | jsr pc,_fflush | |
139 | jsr pc,_pmflush | |
140 | clr r0 | |
141 | / sys creat; cntdata; 0644 | |
142 | / sys write; cntab; 1024. | |
143 | /.data | |
144 | /cntdata: <counts\0> | |
145 | /.even | |
146 | /.text | |
147 | jsr pc,_psexit | |
148 | .globl _psexit | |
149 | 3: | |
150 | mov (sp)+,_dp | |
151 | mov (sp)+,lc | |
152 | mov (sp)+,_lino | |
153 | return | |
154 | _CALL: | |
155 | mov lc,r0 | |
156 | add (lc)+,r0 | |
157 | mov _lino,-(sp) | |
158 | mov lc,-(sp) | |
159 | mov _dp,-(sp) | |
160 | add $_display,r3 | |
161 | mov r3,_dp | |
162 | mov r0,lc | |
163 | return | |
164 | _PUSH: | |
165 | bne 1f | |
166 | mov (lc)+,r3 | |
167 | 1: | |
168 | mov sp,r0 | |
169 | add r3,r0 | |
170 | 1: | |
171 | cmp sp,r0 | |
172 | blos 1f | |
173 | clr -(sp) | |
174 | br 1b | |
175 | 1: | |
176 | return | |
177 | _POP: | |
178 | bne 1f | |
179 | mov (lc)+,r3 | |
180 | 1: | |
181 | add r3,sp | |
182 | return | |
183 | _SDUP: | |
184 | mov (sp),-(sp) | |
185 | return | |
186 | _IF: | |
187 | tstb (sp)+ | |
188 | beq _TRA | |
189 | tst (lc)+ | |
190 | return | |
191 | _ASRT: | |
192 | tstb (sp)+ | |
193 | beq 9f | |
194 | return | |
195 | 9: | |
196 | mov $EASRT,_perrno | |
197 | error EASRT | |
198 | _TRA: | |
199 | add (lc),lc | |
200 | return | |
201 | _LINO: | |
202 | bne 1f | |
203 | mov (lc)+,r3 | |
204 | 1: | |
205 | mov r3,_lino | |
206 | mov *_dp,r1 | |
207 | cmp (r1),sp | |
208 | bne 2f | |
209 | add $1,_stcnt+2 | |
210 | adc _stcnt | |
211 | sub $1,_stlim+2 | |
212 | sbc _stlim | |
213 | bne 1f | |
214 | tst _stlim+2 | |
215 | bne 1f | |
216 | mov $ESTLIM,_perrno | |
217 | error ESTLIM | |
218 | 1: | |
219 | return | |
220 | 2: | |
221 | mov $ESTKNEMP,_perrno | |
222 | error ESTKNEMP | |
223 | .data | |
224 | .globl _stcnt, _stlim | |
225 | _stcnt: 0 | |
226 | 0 | |
227 | _stlim: 7 | |
228 | 120440 | |
229 | .text | |
230 | _GOTO: | |
231 | add (lc),lc | |
232 | add $_display,r3 | |
233 | 1: | |
234 | mov *_dp,r2 | |
235 | cmp r3,_dp | |
236 | beq 1f | |
237 | cmp _dp,$_display | |
238 | beq 9f | |
239 | jsr pc,blkexit | |
240 | tst (r2)+ | |
241 | mov (r2)+,_file | |
242 | mov (r2)+,buf | |
243 | tst (r2)+ | |
244 | mov (r2)+,*_dp | |
245 | mov (r2)+,_dp | |
246 | br 1b | |
247 | 1: | |
248 | mov (r2),sp | |
249 | return | |
250 | 9: | |
251 | mov $EGOTO,_perrno | |
252 | error EGOTO | |
253 | blkexit: | |
254 | mov r2,-(sp) | |
255 | mov fchain,r2 | |
256 | 1: | |
257 | tst r2 | |
258 | beq 2f | |
259 | cmp FLEV(r2),*_dp | |
260 | bhi 2f | |
261 | bit $FWRITE,FUNIT(r2) | |
262 | beq 4f | |
263 | mov FBUF(r2),-(sp) | |
264 | jsr pc,_fflush | |
265 | tst (sp)+ | |
266 | 4: | |
267 | mov FUNIT(r2),r0 | |
268 | bmi 3f | |
269 | bic $!17,r0 | |
270 | sys close | |
271 | bec 3f | |
272 | mov PFNAME(r2),_file | |
273 | mov $ECLOSE,_perrno | |
274 | error ECLOSE | |
275 | 3: | |
276 | bit $TEMP,FUNIT(r2) | |
277 | beq 4f | |
278 | mov PFNAME(r2),0f | |
279 | sys indir;8f | |
280 | .data | |
281 | 8: sys unlink;0: .. | |
282 | .text | |
283 | bec 4f | |
284 | mov PFNAME(r2),_file | |
285 | mov $EREMOVE,_perrno | |
286 | error EREMOVE | |
287 | 4: | |
288 | mov FNAME(r2),-(sp) | |
289 | jsr pc,_free | |
290 | mov r2,(sp) | |
291 | mov FCHAIN(r2),r2 | |
292 | sub $518.+14.,(sp) | |
293 | jsr pc,_free | |
294 | tst (sp)+ | |
295 | br 1b | |
296 | 2: | |
297 | mov r2,fchain | |
298 | mov (sp)+,r2 | |
299 | rts pc | |
300 | _pmflush: | |
301 | tst _pxpbuf | |
302 | beq 1f | |
303 | sys creat; pmonout; 644 | |
304 | sys indir; 8f | |
305 | .data | |
306 | 8: sys write; _pxpbuf: ..; _pxpsize: .. | |
307 | pmonout: <pmon.out\0> | |
308 | .even | |
309 | .text | |
310 | 1: | |
311 | rts pc |