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1 | /* s3_sys.c: IBM System/3 system interface\r |
2 | \r | |
3 | Copyright (c) 2001-2005, Charles E. Owen\r | |
4 | \r | |
5 | Permission is hereby granted, free of charge, to any person obtaining a\r | |
6 | copy of this software and associated documentation files (the "Software"),\r | |
7 | to deal in the Software without restriction, including without limitation\r | |
8 | the rights to use, copy, modify, merge, publish, distribute, sublicense,\r | |
9 | and/or sell copies of the Software, and to permit persons to whom the\r | |
10 | Software is furnished to do so, subject to the following conditions:\r | |
11 | \r | |
12 | The above copyright notice and this permission notice shall be included in\r | |
13 | all copies or substantial portions of the Software.\r | |
14 | \r | |
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\r | |
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\r | |
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL\r | |
18 | ROBERT M SUPNIK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER\r | |
19 | IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\r | |
20 | CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r | |
21 | \r | |
22 | Except as contained in this notice, the name of Charles E. Owen shall not be\r | |
23 | used in advertising or otherwise to promote the sale, use or other dealings\r | |
24 | in this Software without prior written authorization from Charles E. Owen.\r | |
25 | */\r | |
26 | \r | |
27 | #include <ctype.h>\r | |
28 | #include "s3_defs.h"\r | |
29 | \r | |
30 | extern DEVICE cpu_dev;\r | |
31 | extern DEVICE pkb_dev;\r | |
32 | extern DEVICE cdr_dev;\r | |
33 | extern DEVICE cdp_dev;\r | |
34 | extern DEVICE stack_dev;\r | |
35 | extern DEVICE lpt_dev;\r | |
36 | extern DEVICE r1_dev;\r | |
37 | extern DEVICE f1_dev;\r | |
38 | extern DEVICE r2_dev;\r | |
39 | extern DEVICE f2_dev;\r | |
40 | extern UNIT cpu_unit;\r | |
41 | extern REG cpu_reg[];\r | |
42 | extern unsigned char M[];\r | |
43 | extern int32 saved_PC, IAR[];\r | |
44 | extern char ebcdic_to_ascii[256];\r | |
45 | char *parse_addr(char *cptr, char *gbuf, int32 *addr, int32 *addrtype);\r | |
46 | \r | |
47 | int32 printf_sym (FILE *of, char *strg, int32 addr, uint32 *val,\r | |
48 | UNIT *uptr, int32 sw);\r | |
49 | \r | |
50 | /* SCP data structures\r | |
51 | \r | |
52 | sim_name simulator name string\r | |
53 | sim_PC pointer to saved PC register descriptor\r | |
54 | sim_emax number of words needed for examine\r | |
55 | sim_devices array of pointers to simulated devices\r | |
56 | sim_stop_messages array of pointers to stop messages\r | |
57 | sim_load binary loader\r | |
58 | */\r | |
59 | \r | |
60 | char sim_name[] = "System/3";\r | |
61 | \r | |
62 | REG *sim_PC = &cpu_reg[0];\r | |
63 | \r | |
64 | int32 sim_emax = 6;\r | |
65 | \r | |
66 | DEVICE *sim_devices[] = {\r | |
67 | &cpu_dev, \r | |
68 | &pkb_dev,\r | |
69 | &cdr_dev,\r | |
70 | &cdp_dev,\r | |
71 | &stack_dev,\r | |
72 | &lpt_dev,\r | |
73 | &r1_dev,\r | |
74 | &f1_dev,\r | |
75 | &r2_dev,\r | |
76 | &f2_dev,\r | |
77 | NULL\r | |
78 | };\r | |
79 | \r | |
80 | const char *sim_stop_messages[] = {\r | |
81 | "Unknown error",\r | |
82 | "Unknown I/O Instruction",\r | |
83 | "HALT instruction",\r | |
84 | "Breakpoint",\r | |
85 | "Invalid Opcode",\r | |
86 | "Invalid Qbyte",\r | |
87 | "Invalid Address",\r | |
88 | "Invalid Device Command",\r | |
89 | "ATTN Card Reader"\r | |
90 | };\r | |
91 | \r | |
92 | /* This is the opcode master defintion table. Each possible opcode mnemonic\r | |
93 | is defined here, with enough information to translate to and from\r | |
94 | symbolic to binary machine code. \r | |
95 | First field is the opcode's mnemonic\r | |
96 | Second field is the hex of the right nybble of the binary opcode\r | |
97 | Third field is the Q code for those with implicit Q codes\r | |
98 | Fourth field is the symbolic format of the operands:\r | |
99 | 0 - (Q-byte),(R-byte)\r | |
100 | 1 - (Q-byte),(Address)\r | |
101 | 2 - (Address),(Address),(Qbyte)\r | |
102 | 3 - (Address),(Qbyte)\r | |
103 | 4 - (device),(modifier),(function) -- these 3 make up qbyte\r | |
104 | 5 - (device),(modifier),(function),(control)\r | |
105 | 6 - (device),(modifier),(function),(Address)\r | |
106 | 7 - (displacement) -- Q byte is implicit in opcode\r | |
107 | 8 - (address) -- Qbyte is implicit in opcode\r | |
108 | 9 - (Address),(Address) -- Qbyte is implicit in opcode\r | |
109 | Fifth Field is the group number:\r | |
110 | 0 - Command Group (left op nybble is F)\r | |
111 | 1 - One Address Operations A (Left Nybble C, D, or E)\r | |
112 | 2 - Two Address Operations (Left Nybble 0,1,2,4,5,6,8,9, or A)\r | |
113 | 3 - One Address Operations B (left Nybble 3, 7, or B)\r | |
114 | \r | |
115 | There is duplication in this table -- IBM defines different opcodes\r | |
116 | that resolve to the same binary machine instruction -- e.g. JE and\r | |
117 | JZ. On input this is no problem, on output, define the one you\r | |
118 | want to appear first, the second will never appear on output.\r | |
119 | */ \r | |
120 | \r | |
121 | int32 nopcode = 75;\r | |
122 | struct opdef opcode[75] = {\r | |
123 | "HPL", 0x00,0,0,0, /* Halt Program Level */\r | |
124 | "A", 0x06,0,1,3, /* Add to Register: A R,AADD */\r | |
125 | "ST", 0x04,0,1,3, /* Store Register */\r | |
126 | "L", 0x05,0,1,3, /* Load Register */\r | |
127 | "LA", 0x02,0,1,1, /* Load Address */\r | |
128 | "ZAZ", 0x04,0,2,2, /* Zero and Add Zoned */\r | |
129 | "AZ", 0x06,0,2,2, /* Add Zoned Decimal */\r | |
130 | "SZ", 0x07,0,2,2, /* Subtract Zoned Decimal */\r | |
131 | "ALC", 0x0E,0,2,2, /* Add Logical: ALC BADD,AADD,LEN */\r | |
132 | "SLC", 0x0F,0,2,2, /* Sub Logical: SLC BADD,AADD,LEN */\r | |
133 | "MVC", 0x0C,0,2,2, /* Move Chars MVX BADD,AADD,LEN */\r | |
134 | "ED", 0x0A,0,2,2, /* Edit: ED BADD,AADD,LEN */\r | |
135 | "ITC", 0x0B,0,2,2, /* Insert Chars: ITC BADD,AADD,LEN */\r | |
136 | "CLC", 0x0D,0,2,2, /* Compare Logical: CLC BADD,AADD,LEN */\r | |
137 | "MVI", 0x0C,0,3,3, /* Move Immediate */\r | |
138 | "SBN", 0x0A,0,3,3, /* Set Bits On */\r | |
139 | "SBF", 0x0B,0,3,3, /* Set Bits Off */\r | |
140 | "CLI", 0x0D,0,3,3, /* Compare Immediate */\r | |
141 | "TBN", 0x08,0,3,3, /* Test Bits On */\r | |
142 | "TBF", 0x09,0,3,3, /* Test Bits Off */\r | |
143 | "APL", 0x01,0,4,0, /* Advance Program Level */\r | |
144 | "SIO", 0x03,0,5,0, /* Start I/O */\r | |
145 | "SNS", 0x00,0,6,3, /* Sense I/O */\r | |
146 | "LIO", 0x01,0,6,3, /* Load I/O */\r | |
147 | "TIO", 0x01,0,6,1, /* Test I/O */\r | |
148 | "J", 0x02,0,7,0, /* Jump Unconditional */\r | |
149 | "J", 0x02,0x87,7,0, /* Alternate J */\r | |
150 | "JH", 0x02,132,7,0, /* Jump if High */\r | |
151 | "JL", 0x02,130,7,0, /* Jump if Low */\r | |
152 | "JE", 0x02,129,7,0, /* Jump if Equal */\r | |
153 | "JNH", 0x02,4,7,0, /* Jump if Not High */\r | |
154 | "JNL", 0x02,2,7,0, /* Jump if Not Low */\r | |
155 | "JNE", 0x02,1,7,0, /* Jump if Not Equal */\r | |
156 | "JOZ", 0x02,136,7,0, /* Jump if Overflow Zoned */\r | |
157 | "JOL", 0x02,160,7,0, /* Jump if Overflow Logical */\r | |
158 | "JNOZ", 0x02,8,7,0, /* Jump if No Overflow Zoned */\r | |
159 | "JNOL", 0x02,32,7,0, /* Jump if No Overflow Logical */\r | |
160 | "JT", 0x02,16,7,0, /* Jump if True */\r | |
161 | "JF", 0x02,144,7,0, /* Jump if False */\r | |
162 | "JP", 0x02,132,7,0, /* Jump if Plus */\r | |
163 | "JM", 0x02,130,7,0, /* Jump if Minus */\r | |
164 | "JZ", 0x02,129,7,0, /* Jump if Zero */\r | |
165 | "JNP", 0x02,4,7,0, /* Jump if Not Plus */\r | |
166 | "JNM", 0x02,2,7,0, /* Jump if Not Minus */\r | |
167 | "JNZ", 0x02,1,7,0, /* Jump if Not Zero */\r | |
168 | "NOPJ", 0x02,0x80,7,0, /* Never Jump - NOP */\r | |
169 | "B", 0x00,0x00,8,1, /* Branch Unconditional */\r | |
170 | "B", 0x00,0x87,8,1, /* Alternate B */\r | |
171 | "BH", 0x00,0x84,8,1, /* Branch if High */\r | |
172 | "BL", 0x00,0x82,8,1, /* Branch if Low */\r | |
173 | "BE", 0x00,0x81,8,1, /* Branch if Equal */\r | |
174 | "BNH", 0x00,0x04,8,1, /* Branch if Not High */\r | |
175 | "BNL", 0x00,0x02,8,1, /* Branch if Not Low */\r | |
176 | "BNE", 0x00,0x01,8,1, /* Branch if Not Equal */\r | |
177 | "BOZ", 0x00,0x88,8,1, /* Branch if Overflow Zoned */\r | |
178 | "BOL", 0x00,0xA0,8,1, /* Branch if Overflow Logical */\r | |
179 | "BNOZ", 0x00,0x08,8,1, /* Branch if No Overflow Zoned */\r | |
180 | "BNOL", 0x00,0x20,8,1, /* Branch if No Overflow Logical */\r | |
181 | "BT", 0x00,0x10,8,1, /* Branch if True */\r | |
182 | "BF", 0x00,0x90,8,1, /* Branch if False */\r | |
183 | "BP", 0x00,0x84,8,1, /* Branch if Plus */\r | |
184 | "BM", 0x00,0x82,8,1, /* Branch if Minus */\r | |
185 | "BZ", 0x00,0x81,8,1, /* Branch if Zero */\r | |
186 | "BNP", 0x00,0x04,8,1, /* Branch if Not Plus */\r | |
187 | "BNM", 0x00,0x02,8,1, /* Branch if Not Minus */\r | |
188 | "BNZ", 0x00,0x01,8,1, /* Branch if Not Zero */\r | |
189 | "NOPB", 0x00,0x80,8,1, /* Never Branch - NOP */\r | |
190 | "MZZ", 0x08,0,9,2, /* Move Zone to Zone */\r | |
191 | "MNZ", 0x08,1,9,2, /* Move Numeric to Zone */\r | |
192 | "MZN", 0x08,2,9,2, /* Move Zone to Numeric */\r | |
193 | "MNN", 0x08,3,9,2, /* Move Numeric to Numeric */\r | |
194 | "MVX", 0x08,0,2,2, /* Move Hex: MVX BADD,AADD,CODE */\r | |
195 | "JC", 0x02,0,3,0, /* Jump on Specified Condition bits */\r | |
196 | "BC", 0x00,0,3,1, /* Branch on Specified Condition */\r | |
197 | "***", 0x00,0,0,0\r | |
198 | };\r | |
199 | \r | |
200 | int32 regcode[15] = { 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01,\r | |
201 | 0x80, 0xC0, 0xA0, 0x90, 0x88, 0x84, 0x82, 0x81\r | |
202 | };\r | |
203 | \r | |
204 | char regname[15][8] = { "(P2IAR)",\r | |
205 | "(P1IAR)",\r | |
206 | "(IAR)",\r | |
207 | "(ARR)",\r | |
208 | "(PSR)",\r | |
209 | "(XR2)",\r | |
210 | "(XR1)",\r | |
211 | "(IAR0)",\r | |
212 | "(IAR1)",\r | |
213 | "(IAR2)",\r | |
214 | "(IAR3)",\r | |
215 | "(IAR4)",\r | |
216 | "(IAR5)",\r | |
217 | "(IAR6)",\r | |
218 | "(IAR7)"\r | |
219 | }; \r | |
220 | \r | |
221 | /* This is the binary loader. The input file is considered to be\r | |
222 | a string of literal bytes with no special format. The\r | |
223 | load starts at the current value of the P1IAR.\r | |
224 | */\r | |
225 | \r | |
226 | int32 sim_load (FILE *fileref, char *cptr, char *fnam, int flag)\r | |
227 | {\r | |
228 | int32 i, addr = 0, cnt = 0;\r | |
229 | \r | |
230 | if ((*cptr != 0) || (flag != 0)) return SCPE_ARG;\r | |
231 | addr = IAR[8];\r | |
232 | while ((i = getc (fileref)) != EOF) {\r | |
233 | M[addr] = i & 0xff;\r | |
234 | addr++;\r | |
235 | cnt++;\r | |
236 | } /* end while */\r | |
237 | printf ("%d Bytes loaded.\n", cnt);\r | |
238 | return (SCPE_OK);\r | |
239 | }\r | |
240 | \r | |
241 | /* Symbolic output\r | |
242 | \r | |
243 | Inputs:\r | |
244 | *of = output stream\r | |
245 | addr = current PC\r | |
246 | *val = pointer to values\r | |
247 | *uptr = pointer to unit\r | |
248 | sw = switches\r | |
249 | Outputs:\r | |
250 | status = error code\r | |
251 | */\r | |
252 | \r | |
253 | int32 fprint_sym (FILE *of, int32 addr, uint32 *val,\r | |
254 | UNIT *uptr, int32 sw)\r | |
255 | {\r | |
256 | int32 r;\r | |
257 | char strg[256];\r | |
258 | \r | |
259 | strcpy(strg, "");\r | |
260 | r = printf_sym(of, strg, addr, val, uptr, sw);\r | |
261 | if (sw & SWMASK ('A'))\r | |
262 | strcpy(strg, "");\r | |
263 | else\r | |
264 | fprintf(of, "%s", strg);\r | |
265 | return (r);\r | |
266 | }\r | |
267 | \r | |
268 | int32 printf_sym (FILE *of, char *strg, int32 addr, uint32 *val,\r | |
269 | UNIT *uptr, int32 sw)\r | |
270 | {\r | |
271 | int32 cflag, c1, c2, group, len1, len2, inst, aaddr, baddr;\r | |
272 | int32 oplen, groupno, i, j, vpos, qbyte, da, m, n;\r | |
273 | char bld[128], bldaddr[32], boperand[32], aoperand[32];\r | |
274 | int32 blk[16], blt[16];\r | |
275 | int32 blkadd;\r | |
276 | \r | |
277 | cflag = (uptr == NULL) || (uptr == &cpu_unit);\r | |
278 | c1 = val[0] & 0xff;\r | |
279 | if (sw & SWMASK ('A')) {\r | |
280 | for (i = 0; i < 16; i++) {\r | |
281 | blkadd = addr + (i*16);\r | |
282 | for (j = 0; j < 16; j++) {\r | |
283 | blk[j] = M[blkadd+j] & 0xff;\r | |
284 | c2 = ebcdic_to_ascii[blk[j]];\r | |
285 | if (c2 < 040 || c2 > 0177 || blk[j] == 07) {\r | |
286 | blt[j] = '.';\r | |
287 | } else { \r | |
288 | blt[j] = c2;\r | |
289 | }\r | |
290 | }\r | |
291 | if (i == 0) {\r | |
292 | fprintf(of, "%02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X [%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c]\n ",\r | |
293 | blk[0], blk[1], blk[2], blk[3], blk[4], blk[5], blk[6], blk[7],\r | |
294 | blk[8], blk[9], blk[10], blk[11], blk[12], blk[13], blk[14], blk[15],\r | |
295 | blt[0], blt[1], blt[2], blt[3], blt[4], blt[5], blt[6], blt[7],\r | |
296 | blt[8], blt[9], blt[10], blt[11], blt[12], blt[13], blt[14], blt[15]);\r | |
297 | } else {\r | |
298 | fprintf(of, "%X\t%02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X [%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c]\n ",\r | |
299 | blkadd, blk[0], blk[1], blk[2], blk[3], blk[4], blk[5], blk[6], blk[7],\r | |
300 | blk[8], blk[9], blk[10], blk[11], blk[12], blk[13], blk[14], blk[15],\r | |
301 | blt[0], blt[1], blt[2], blt[3], blt[4], blt[5], blt[6], blt[7],\r | |
302 | blt[8], blt[9], blt[10], blt[11], blt[12], blt[13], blt[14], blt[15]);\r | |
303 | } \r | |
304 | } \r | |
305 | return SCPE_OK; }\r | |
306 | if (sw & SWMASK ('C')) {\r | |
307 | c2 = ebcdic_to_ascii[c1];\r | |
308 | if (c2 < 040 || c2 > 0177) {\r | |
309 | sprintf(strg, "<%02X>", c1 & 0xff);\r | |
310 | } else { \r | |
311 | sprintf (strg, "%c", c2 & 0xff);\r | |
312 | }\r | |
313 | return SCPE_OK; }\r | |
314 | if (!(sw & SWMASK ('M'))) return SCPE_ARG;\r | |
315 | \r | |
316 | inst = val[0] & 0x0f;\r | |
317 | len1 = (val[0] >> 6) & 3;\r | |
318 | len2 = (val[0] >> 4) & 3;\r | |
319 | group = (val[0] >> 4) & 0x0f;\r | |
320 | qbyte = val[1];\r | |
321 | \r | |
322 | /* Get total length of instruction */\r | |
323 | \r | |
324 | if (group == 0x0f) {\r | |
325 | oplen = 3;\r | |
326 | } else {\r | |
327 | oplen = 2; \r | |
328 | if (len1 == 0) oplen += 2;\r | |
329 | if (len1 == 1 || len1 == 2) oplen++;\r | |
330 | if (len2 == 0) oplen += 2;\r | |
331 | if (len2 == 1 || len2 == 2) oplen++;\r | |
332 | }\r | |
333 | \r | |
334 | /* Find which group it belongs to */\r | |
335 | \r | |
336 | switch (group) {\r | |
337 | case 0x0f: \r | |
338 | groupno = 0;\r | |
339 | break;\r | |
340 | case 0x0c:\r | |
341 | case 0x0d:\r | |
342 | case 0x0e:\r | |
343 | groupno = 1;\r | |
344 | break;\r | |
345 | case 0x03:\r | |
346 | case 0x07:\r | |
347 | case 0x0b:\r | |
348 | groupno = 3;\r | |
349 | break;\r | |
350 | default:\r | |
351 | groupno = 2;\r | |
352 | break;\r | |
353 | } \r | |
354 | \r | |
355 | /* find the table entry */\r | |
356 | \r | |
357 | for (i = 0; i < nopcode; i++) {\r | |
358 | if (opcode[i].form < 7) { /* Explicit Q */\r | |
359 | if (opcode[i].group == groupno &&\r | |
360 | opcode[i].opmask == inst) break;\r | |
361 | } else { /* Implicit Q */\r | |
362 | if (opcode[i].group == groupno &&\r | |
363 | opcode[i].opmask == inst &&\r | |
364 | opcode[i].q == qbyte) break;\r | |
365 | } \r | |
366 | }\r | |
367 | \r | |
368 | /* print the opcode */\r | |
369 | \r | |
370 | if (i >= nopcode) {\r | |
371 | sprintf(strg, "%02X", val[0]);\r | |
372 | oplen = 1;\r | |
373 | } else {\r | |
374 | sprintf(bld, "%s ", opcode[i].op);\r | |
375 | \r | |
376 | /* Extract the addresses into aaddr and baddr */\r | |
377 | \r | |
378 | strcpy(aoperand, "ERROR");\r | |
379 | strcpy(boperand, "ERROR");\r | |
380 | vpos = 2;\r | |
381 | aaddr = baddr = 0;\r | |
382 | switch (len1) {\r | |
383 | case 0:\r | |
384 | baddr = ((val[vpos] << 8) & 0xff00) | (val[vpos + 1] & 0x00ff);\r | |
385 | sprintf(boperand, "%04X", baddr);\r | |
386 | vpos = 4;\r | |
387 | break;\r | |
388 | case 1:\r | |
389 | baddr = val[vpos] & 255;\r | |
390 | sprintf(boperand, "(%02X,XR1)", baddr);\r | |
391 | vpos = 3;\r | |
392 | break;\r | |
393 | case 2:\r | |
394 | baddr = val[vpos] & 255;\r | |
395 | sprintf(boperand, "(%02X,XR2)", baddr);\r | |
396 | vpos = 3;\r | |
397 | break;\r | |
398 | default:\r | |
399 | baddr = 0;\r | |
400 | break;\r | |
401 | } \r | |
402 | switch (len2) {\r | |
403 | case 0:\r | |
404 | aaddr = ((val[vpos] << 8) & 0xff00) | (val[vpos + 1] & 0x00ff);\r | |
405 | if (group == 0x0C || group == 0x0D || group == 0x0E)\r | |
406 | sprintf(boperand, "%04X", aaddr);\r | |
407 | else\r | |
408 | sprintf(aoperand, "%04X", aaddr);\r | |
409 | break; \r | |
410 | case 1:\r | |
411 | aaddr = val[vpos] & 255;\r | |
412 | if (group == 0x0C || group == 0x0D || group == 0x0E)\r | |
413 | sprintf(boperand, "(%02X,XR1)", aaddr);\r | |
414 | else\r | |
415 | sprintf(aoperand, "(%02X,XR1)", aaddr);\r | |
416 | break;\r | |
417 | case 2:\r | |
418 | aaddr = val[vpos] & 255;\r | |
419 | if (group == 0x0C || group == 0x0D || group == 0x0E)\r | |
420 | sprintf(boperand, "(%02X,XR2)", aaddr);\r | |
421 | else\r | |
422 | sprintf(aoperand, "(%02X,XR2)", aaddr);\r | |
423 | break;\r | |
424 | default:\r | |
425 | aaddr = 0;\r | |
426 | break;\r | |
427 | } \r | |
428 | \r | |
429 | /* Display the operands in the correct format */\r | |
430 | \r | |
431 | da = (qbyte >> 4) & 0x0f; \r | |
432 | m = (qbyte >> 3) & 0x01;\r | |
433 | n = (qbyte) & 0x07;\r | |
434 | \r | |
435 | switch (opcode[i].form) {\r | |
436 | case 0:\r | |
437 | sprintf(bldaddr, "%02X,%02X", qbyte, val[2]);\r | |
438 | break;\r | |
439 | case 1:\r | |
440 | if (inst == 2 || inst == 4 || inst == 5 || inst == 6) {\r | |
441 | for (i = 0; i < 16; i++) {\r | |
442 | if (regcode[i] == qbyte)\r | |
443 | break;\r | |
444 | }\r | |
445 | if (i < 16) {\r | |
446 | sprintf(bldaddr, "%s,%s", regname[i], boperand);\r | |
447 | } else {\r | |
448 | sprintf(bldaddr, "%02X,%s", qbyte, boperand);\r | |
449 | } \r | |
450 | } else {\r | |
451 | sprintf(bldaddr, "%02X,%s", qbyte, boperand);\r | |
452 | }\r | |
453 | break;\r | |
454 | case 2:\r | |
455 | if (inst > 9 || inst == 4 || inst == 6 || inst == 7)\r | |
456 | qbyte++; /* special +1 for length display */\r | |
457 | sprintf(bldaddr, "%s,%s,%d", boperand, aoperand, qbyte);\r | |
458 | break;\r | |
459 | case 3:\r | |
460 | if (strcmp(opcode[i].op, "JC") == 0) {\r | |
461 | sprintf(bldaddr, "%04X,%02X", addr+oplen+val[2], qbyte);\r | |
462 | } else { \r | |
463 | sprintf(bldaddr, "%s,%02X", boperand, qbyte);\r | |
464 | } \r | |
465 | break;\r | |
466 | case 4: \r | |
467 | sprintf(bldaddr, "%d,%d,%d", da, m, n);\r | |
468 | break;\r | |
469 | case 5:\r | |
470 | sprintf(bldaddr, "%d,%d,%d,%02X", da, m, n, val[2]);\r | |
471 | break;\r | |
472 | case 6:\r | |
473 | sprintf(bldaddr, "%d,%d,%d,%s", da, m, n, boperand);\r | |
474 | break;\r | |
475 | case 7:\r | |
476 | sprintf(bldaddr, "%04X", addr+oplen+val[2]);\r | |
477 | break;\r | |
478 | case 8:\r | |
479 | sprintf(bldaddr, "%s", boperand); \r | |
480 | break;\r | |
481 | default:\r | |
482 | sprintf(bldaddr, "%s,%s", boperand, aoperand);\r | |
483 | break;\r | |
484 | } \r | |
485 | sprintf(strg, "%s%s", bld, bldaddr);\r | |
486 | } \r | |
487 | \r | |
488 | return -(oplen - 1);\r | |
489 | }\r | |
490 | \r | |
491 | /* Symbolic input\r | |
492 | \r | |
493 | Inputs:\r | |
494 | *cptr = pointer to input string\r | |
495 | addr = current PC\r | |
496 | *uptr = pointer to unit\r | |
497 | *val = pointer to output values\r | |
498 | sw = switches\r | |
499 | Outputs:\r | |
500 | status = error status\r | |
501 | */\r | |
502 | \r | |
503 | int32 parse_sym (char *cptr, int32 addr, UNIT *uptr, uint32 *val, int32 sw)\r | |
504 | {\r | |
505 | int32 cflag, i = 0, j, r, oplen, addtyp, saveaddr, vptr;\r | |
506 | char gbuf[CBUFSIZE];\r | |
507 | \r | |
508 | cflag = (uptr == NULL) || (uptr == &cpu_unit);\r | |
509 | while (isspace (*cptr)) cptr++; /* absorb spaces */\r | |
510 | if ((sw & SWMASK ('A')) || ((*cptr == '\'') && cptr++)) { /* ASCII char? */\r | |
511 | if (cptr[0] == 0) return SCPE_ARG; /* must have 1 char */\r | |
512 | val[0] = (unsigned int) cptr[0];\r | |
513 | return SCPE_OK;\r | |
514 | }\r | |
515 | if ((sw & SWMASK ('C')) || ((*cptr == '"') && cptr++)) { /* ASCII string? */\r | |
516 | if (cptr[0] == 0) return SCPE_ARG; /* must have 1 char */\r | |
517 | val[0] = ((unsigned int) cptr[0] << 8) + (unsigned int) cptr[1];\r | |
518 | return SCPE_OK;\r | |
519 | }\r | |
520 | \r | |
521 | /* An instruction: get opcode (all characters until null, comma, left paren,\r | |
522 | or numeric (including spaces).\r | |
523 | */\r | |
524 | \r | |
525 | while (1) {\r | |
526 | if (*cptr == ',' || *cptr == '\0' || *cptr == '(' ||\r | |
527 | isdigit(*cptr))\r | |
528 | break;\r | |
529 | gbuf[i] = toupper(*cptr);\r | |
530 | cptr++;\r | |
531 | i++;\r | |
532 | }\r | |
533 | \r | |
534 | /* kill trailing spaces if any */\r | |
535 | gbuf[i] = '\0';\r | |
536 | for (j = i - 1; gbuf[j] == ' '; j--) {\r | |
537 | gbuf[j] = '\0';\r | |
538 | }\r | |
539 | \r | |
540 | /* find opcode in table */\r | |
541 | for (j = 0; j < nopcode; j++) {\r | |
542 | if (strcmp(gbuf, opcode[j].op) == 0)\r | |
543 | break;\r | |
544 | }\r | |
545 | if (j >= nopcode) /* not found */\r | |
546 | return SCPE_ARG;\r | |
547 | \r | |
548 | oplen = 2; /* start with op & q */\r | |
549 | \r | |
550 | val[0] = opcode[j].opmask; /* store opcode right nybble */\r | |
551 | \r | |
552 | switch (opcode[j].form) { /* Get operands based on operand format */\r | |
553 | case 0: /* Single Byte Operand */\r | |
554 | if (*cptr == ',') cptr++;\r | |
555 | cptr = get_glyph(cptr, gbuf, ','); /* Get Q Byte */\r | |
556 | sscanf(gbuf, "%x", &r);\r | |
557 | val[1] = r;\r | |
558 | if (*cptr == ',') cptr++;\r | |
559 | cptr = get_glyph(cptr, gbuf, 0); /* Get R Byte */\r | |
560 | sscanf(gbuf, "%x", &r);\r | |
561 | val[2] = r;\r | |
562 | oplen = 3;\r | |
563 | val[0] = 0xf0 | opcode[j].opmask;\r | |
564 | break;\r | |
565 | case 1:\r | |
566 | if (*cptr == ',') cptr++;\r | |
567 | cptr = get_glyph(cptr, gbuf, ',');\r | |
568 | if (opcode[j].opmask == 2 ||\r | |
569 | opcode[j].opmask == 4 ||\r | |
570 | opcode[j].opmask == 5 ||\r | |
571 | opcode[j].opmask == 6) {\r | |
572 | if (isdigit(gbuf[0])) {\r | |
573 | sscanf(gbuf, "%x", &r);\r | |
574 | } else {\r | |
575 | for (i = 0; i < 16; i++) {\r | |
576 | if (strcmp(gbuf, regname[i]) == 0)\r | |
577 | break;\r | |
578 | }\r | |
579 | if (i < 16) {\r | |
580 | r = regcode[i];\r | |
581 | } else {\r | |
582 | return SCPE_ARG;\r | |
583 | } \r | |
584 | } \r | |
585 | } else {\r | |
586 | sscanf(gbuf, "%x", &r);\r | |
587 | } \r | |
588 | if (r > 255) return SCPE_ARG;\r | |
589 | val[1] = r;\r | |
590 | if (*cptr == ',') cptr++;\r | |
591 | cptr = parse_addr(cptr, gbuf, &addr, &addtyp);\r | |
592 | switch(addtyp) {\r | |
593 | case 0: \r | |
594 | val[2] = (addr >> 8) & 0x00ff;\r | |
595 | val[3] = addr & 0xff;\r | |
596 | oplen = 4;\r | |
597 | if (opcode[j].group == 1)\r | |
598 | val[0] = 0xC0 | opcode[j].opmask;\r | |
599 | else\r | |
600 | val[0] = 0x30 | opcode[j].opmask;\r | |
601 | break;\r | |
602 | case 1: \r | |
603 | val[2] = addr & 0xff;\r | |
604 | oplen = 3;\r | |
605 | if (opcode[j].group == 1)\r | |
606 | val[0] = 0xD0 | opcode[j].opmask;\r | |
607 | else \r | |
608 | val[0] = 0x70 | opcode[j].opmask;\r | |
609 | break;\r | |
610 | case 2:\r | |
611 | val[2] = addr & 0xff;\r | |
612 | oplen = 3;\r | |
613 | if (opcode[j].group == 1)\r | |
614 | val[0] = 0xE0 | opcode[j].opmask;\r | |
615 | else\r | |
616 | val[0] = 0xB0 | opcode[j].opmask;\r | |
617 | break;\r | |
618 | default:\r | |
619 | return SCPE_ARG;\r | |
620 | break;\r | |
621 | } \r | |
622 | break;\r | |
623 | case 2:\r | |
624 | oplen = 2;\r | |
625 | cptr = parse_addr(cptr, gbuf, &addr, &addtyp);\r | |
626 | switch(addtyp) {\r | |
627 | case 0: \r | |
628 | val[2] = (addr >> 8) & 0xff;\r | |
629 | val[3] = addr & 0xff;\r | |
630 | oplen += 2;\r | |
631 | vptr = 4;\r | |
632 | val[0] = 0x00 | opcode[j].opmask;\r | |
633 | break;\r | |
634 | case 1: \r | |
635 | val[2] = addr & 0xff;\r | |
636 | oplen += 1;\r | |
637 | vptr = 3;\r | |
638 | val[0] = 0x40 | opcode[j].opmask;\r | |
639 | break;\r | |
640 | case 2:\r | |
641 | val[2] = addr & 0xff;\r | |
642 | oplen += 1;\r | |
643 | vptr = 3;\r | |
644 | val[0] = 0x80 | opcode[j].opmask;\r | |
645 | break;\r | |
646 | default:\r | |
647 | return SCPE_ARG;\r | |
648 | break;\r | |
649 | }\r | |
650 | if (*cptr == ',') cptr++;\r | |
651 | cptr = parse_addr(cptr, gbuf, &addr, &addtyp);\r | |
652 | switch(addtyp) {\r | |
653 | case 0: \r | |
654 | val[vptr] = (addr >> 8) & 0xff;\r | |
655 | val[vptr+1] = addr & 0xff;\r | |
656 | oplen += 2;\r | |
657 | break;\r | |
658 | case 1: \r | |
659 | val[vptr] = addr & 0xff;\r | |
660 | oplen += 1;\r | |
661 | val[0] = 0x10 | val[0];\r | |
662 | break;\r | |
663 | case 2:\r | |
664 | val[vptr] = addr & 0xff;\r | |
665 | oplen += 1;\r | |
666 | val[0] = 0x20 | val[0];\r | |
667 | break;\r | |
668 | default:\r | |
669 | return SCPE_ARG;\r | |
670 | break;\r | |
671 | } \r | |
672 | if (*cptr == ',') cptr++;\r | |
673 | cptr = get_glyph(cptr, gbuf, 0);\r | |
674 | sscanf(gbuf, "%d", &r);\r | |
675 | if (opcode[j].opmask > 9 ||\r | |
676 | opcode[j].opmask == 4 ||\r | |
677 | opcode[j].opmask == 6 ||\r | |
678 | opcode[j].opmask == 7) r--; /* special: length -1 */\r | |
679 | val[1] = r;\r | |
680 | if (*cptr == ',') cptr++;\r | |
681 | break;\r | |
682 | case 3:\r | |
683 | saveaddr = addr;\r | |
684 | if (*cptr == ',') cptr++;\r | |
685 | cptr = parse_addr(cptr, gbuf, &addr, &addtyp);\r | |
686 | switch(addtyp) {\r | |
687 | case 0:\r | |
688 | if (opcode[j].group == 0) { /* Group 0 form 3 is JC with explicit Q */\r | |
689 | if (*cptr == ',') cptr++;\r | |
690 | cptr = get_glyph(cptr, gbuf, 0);\r | |
691 | sscanf(gbuf, "%x", &r);\r | |
692 | if ((addr - (saveaddr+3)) > 255 || (addr - (saveaddr+3)) < 1)\r | |
693 | return SCPE_ARG;\r | |
694 | val[2] = addr - (saveaddr+3);\r | |
695 | val[1] = r;\r | |
696 | val[0] = 0xf0 | opcode[j].opmask;\r | |
697 | oplen = 3;\r | |
698 | \r | |
699 | } else {\r | |
700 | val[2] = (addr >> 8) & 0x00ff;\r | |
701 | val[3] = addr & 0xff;\r | |
702 | oplen = 4;\r | |
703 | if (opcode[j].group == 1)\r | |
704 | val[0] = 0xC0 | opcode[j].opmask;\r | |
705 | else\r | |
706 | val[0] = 0x30 | opcode[j].opmask;\r | |
707 | } \r | |
708 | break;\r | |
709 | case 1: \r | |
710 | val[2] = addr & 0xff;\r | |
711 | oplen = 3;\r | |
712 | if (opcode[j].group == 1)\r | |
713 | val[0] = 0xD0 | opcode[j].opmask;\r | |
714 | else\r | |
715 | val[0] = 0x70 | opcode[j].opmask;\r | |
716 | break;\r | |
717 | case 2:\r | |
718 | val[2] = addr & 0xff;\r | |
719 | oplen = 3;\r | |
720 | if (opcode[j].group == 1)\r | |
721 | val[0] = 0xE0 | opcode[j].opmask;\r | |
722 | else\r | |
723 | val[0] = 0xB0 | opcode[j].opmask;\r | |
724 | break;\r | |
725 | default:\r | |
726 | return SCPE_ARG;\r | |
727 | break;\r | |
728 | } \r | |
729 | if (*cptr == ',') cptr++;\r | |
730 | cptr = get_glyph(cptr, gbuf, 0);\r | |
731 | sscanf(gbuf, "%x", &r);\r | |
732 | if (r > 255) return SCPE_ARG;\r | |
733 | val[1] = r;\r | |
734 | break;\r | |
735 | case 4:\r | |
736 | if (*cptr == ',') cptr++;\r | |
737 | cptr = get_glyph(cptr, gbuf, ',');\r | |
738 | sscanf(gbuf, "%d", &r);\r | |
739 | if (r > 15) return SCPE_ARG;\r | |
740 | val[1] = (r << 4) & 0xf0;\r | |
741 | val[0] = 0xf0 | opcode[j].opmask;\r | |
742 | if (*cptr == ',') cptr++;\r | |
743 | cptr = get_glyph(cptr, gbuf, ',');\r | |
744 | sscanf(gbuf, "%d", &r);\r | |
745 | if (r > 1) return SCPE_ARG;\r | |
746 | val[1] |= (r << 3) & 0x08;\r | |
747 | if (*cptr == ',') cptr++;\r | |
748 | cptr = get_glyph(cptr, gbuf, 0);\r | |
749 | sscanf(gbuf, "%d", &r);\r | |
750 | if (r > 7) return SCPE_ARG;\r | |
751 | val[1] |= r & 0x07;\r | |
752 | val[2] = 0;\r | |
753 | oplen = 3;\r | |
754 | break;\r | |
755 | case 5:\r | |
756 | if (*cptr == ',') cptr++;\r | |
757 | cptr = get_glyph(cptr, gbuf, ',');\r | |
758 | sscanf(gbuf, "%d", &r);\r | |
759 | if (r > 15) return SCPE_ARG;\r | |
760 | val[1] = (r << 4) & 0xf0;\r | |
761 | val[0] = 0xf0 | opcode[j].opmask;\r | |
762 | if (*cptr == ',') cptr++;\r | |
763 | cptr = get_glyph(cptr, gbuf, ',');\r | |
764 | sscanf(gbuf, "%d", &r);\r | |
765 | if (r > 1) return SCPE_ARG;\r | |
766 | val[1] |= (r << 3) & 0x08;\r | |
767 | if (*cptr == ',') cptr++;\r | |
768 | cptr = get_glyph(cptr, gbuf, ',');\r | |
769 | sscanf(gbuf, "%d", &r);\r | |
770 | if (r > 7) return SCPE_ARG;\r | |
771 | val[1] |= r & 0x07;\r | |
772 | if (*cptr == ',') cptr++;\r | |
773 | cptr = get_glyph(cptr, gbuf, 0);\r | |
774 | sscanf(gbuf, "%x", &r);\r | |
775 | if (r > 255) return SCPE_ARG;\r | |
776 | val[2] = r;\r | |
777 | oplen = 3;\r | |
778 | break;\r | |
779 | case 6:\r | |
780 | if (*cptr == ',') cptr++;\r | |
781 | cptr = get_glyph(cptr, gbuf, ',');\r | |
782 | sscanf(gbuf, "%d", &r);\r | |
783 | if (r > 15) return SCPE_ARG;\r | |
784 | val[1] = (r << 4) & 0xf0;\r | |
785 | if (*cptr == ',') cptr++;\r | |
786 | cptr = get_glyph(cptr, gbuf, ',');\r | |
787 | sscanf(gbuf, "%d", &r);\r | |
788 | if (r > 1) return SCPE_ARG;\r | |
789 | val[1] |= (r << 3) & 0x08;\r | |
790 | if (*cptr == ',') cptr++;\r | |
791 | cptr = get_glyph(cptr, gbuf, ',');\r | |
792 | sscanf(gbuf, "%d", &r);\r | |
793 | if (r > 7) return SCPE_ARG;\r | |
794 | val[1] |= r & 0x07;\r | |
795 | if (*cptr == ',') cptr++;\r | |
796 | cptr = parse_addr(cptr, gbuf, &addr, &addtyp);\r | |
797 | switch(addtyp) {\r | |
798 | case 0: \r | |
799 | val[2] = (addr >> 8) & 0x00ff;\r | |
800 | val[3] = addr & 0xff;\r | |
801 | oplen = 4;\r | |
802 | if (opcode[j].group == 1)\r | |
803 | val[0] = 0xC0 | opcode[j].opmask;\r | |
804 | else\r | |
805 | val[0] = 0x30 | opcode[j].opmask;\r | |
806 | break;\r | |
807 | case 1: \r | |
808 | val[2] = addr & 0xff;\r | |
809 | oplen = 3;\r | |
810 | if (opcode[j].group == 1)\r | |
811 | val[0] = 0xD0 | opcode[j].opmask;\r | |
812 | else\r | |
813 | val[0] = 0x70 | opcode[j].opmask;\r | |
814 | break;\r | |
815 | case 2:\r | |
816 | val[2] = addr & 0xff;\r | |
817 | oplen = 3;\r | |
818 | if (opcode[j].group == 1)\r | |
819 | val[0] = 0xE0 | opcode[j].opmask;\r | |
820 | else\r | |
821 | val[0] = 0xB0 | opcode[j].opmask;\r | |
822 | break;\r | |
823 | default:\r | |
824 | return SCPE_ARG;\r | |
825 | break;\r | |
826 | } \r | |
827 | break;\r | |
828 | case 7:\r | |
829 | if (*cptr == ',') cptr++;\r | |
830 | cptr = get_glyph(cptr, gbuf, 0);\r | |
831 | sscanf(gbuf, "%x", &r);\r | |
832 | if ((r - (addr+3)) > 255 || (r - (addr+3)) < 1) return SCPE_ARG;\r | |
833 | val[2] = r - (addr+3);\r | |
834 | val[1] = opcode[j].q;\r | |
835 | val[0] = 0xf0 | opcode[j].opmask;\r | |
836 | oplen = 3;\r | |
837 | break;\r | |
838 | \r | |
839 | case 8:\r | |
840 | if (*cptr == ',') cptr++;\r | |
841 | cptr = parse_addr(cptr, gbuf, &addr, &addtyp);\r | |
842 | switch(addtyp) {\r | |
843 | case 0: \r | |
844 | val[2] = (addr >> 8) & 0x00ff;\r | |
845 | val[3] = addr & 0xff;\r | |
846 | oplen = 4;\r | |
847 | val[0] = 0xC0 | opcode[j].opmask;\r | |
848 | break;\r | |
849 | case 1: \r | |
850 | val[2] = addr & 0xff;\r | |
851 | oplen = 3;\r | |
852 | val[0] = 0xD0 | opcode[j].opmask;\r | |
853 | break;\r | |
854 | case 2:\r | |
855 | val[2] = addr & 0xff;\r | |
856 | oplen = 3;\r | |
857 | val[0] = 0xE0 | opcode[j].opmask;\r | |
858 | break;\r | |
859 | default:\r | |
860 | return SCPE_ARG;\r | |
861 | break;\r | |
862 | } \r | |
863 | val[1] = opcode[j].q;\r | |
864 | break;\r | |
865 | case 9:\r | |
866 | oplen = 2;\r | |
867 | val[0] = 0;\r | |
868 | cptr = parse_addr(cptr, gbuf, &addr, &addtyp);\r | |
869 | switch(addtyp) {\r | |
870 | case 0: \r | |
871 | val[2] = (addr >> 8) & 0xff;\r | |
872 | val[3] = addr & 0xff;\r | |
873 | oplen += 2;\r | |
874 | vptr = 4;\r | |
875 | val[0] = 0x00 | opcode[j].opmask;\r | |
876 | break;\r | |
877 | case 1: \r | |
878 | val[2] = addr & 0xff;\r | |
879 | oplen += 1;\r | |
880 | vptr = 3;\r | |
881 | val[0] = 0x40 | opcode[j].opmask;\r | |
882 | break;\r | |
883 | case 2:\r | |
884 | val[2] = addr & 0xff;\r | |
885 | oplen += 1;\r | |
886 | vptr = 3;\r | |
887 | val[0] = 0x80 | opcode[j].opmask;\r | |
888 | break;\r | |
889 | default:\r | |
890 | return SCPE_ARG;\r | |
891 | break;\r | |
892 | }\r | |
893 | if (*cptr == ',') cptr++;\r | |
894 | cptr = parse_addr(cptr, gbuf, &addr, &addtyp);\r | |
895 | switch(addtyp) {\r | |
896 | case 0: \r | |
897 | val[vptr] = (addr >> 8) & 0xff;\r | |
898 | val[vptr+1] = addr & 0xff;\r | |
899 | oplen += 2;\r | |
900 | break;\r | |
901 | case 1: \r | |
902 | val[vptr] = addr & 0xff;\r | |
903 | oplen += 1;\r | |
904 | val[0] = 0x10 | val[0];\r | |
905 | break;\r | |
906 | case 2:\r | |
907 | val[vptr] = addr & 0xff;\r | |
908 | oplen += 1;\r | |
909 | val[0] = 0x20 | val[0];\r | |
910 | break;\r | |
911 | default:\r | |
912 | return SCPE_ARG;\r | |
913 | break;\r | |
914 | } \r | |
915 | val[1] = opcode[j].q;\r | |
916 | break;\r | |
917 | default:\r | |
918 | break;\r | |
919 | }\r | |
920 | \r | |
921 | \r | |
922 | return (-(oplen-1));\r | |
923 | }\r | |
924 | \r | |
925 | char *parse_addr(char *cptr, char *gbuf, int32 *addr, int32 *addrtype)\r | |
926 | {\r | |
927 | int32 nybble = 0;\r | |
928 | char temp[32];\r | |
929 | \r | |
930 | cptr = get_glyph(cptr, gbuf, ',');\r | |
931 | if (gbuf[0] == '(') { /* XR relative */\r | |
932 | strcpy(temp, gbuf+1);\r | |
933 | sscanf(temp, "%x", addr);\r | |
934 | if (*cptr == ',') cptr++;\r | |
935 | cptr = get_glyph(cptr, gbuf, ',');\r | |
936 | nybble = -1;\r | |
937 | if (strcmp(gbuf, "XR1)") == 0)\r | |
938 | nybble = 1;\r | |
939 | if (strcmp(gbuf, "XR2)") == 0)\r | |
940 | nybble = 2;\r | |
941 | } else { /* Direct */\r | |
942 | sscanf(gbuf, "%x", addr);\r | |
943 | nybble = 0; \r | |
944 | }\r | |
945 | *addrtype = nybble;\r | |
946 | return cptr;\r | |
947 | }\r | |
948 | \r |