Mercurial > hg > Members > kono > os9 > sbc09
annotate a09.c @ 35:01519215ec70
add watch point
0xfe00 fixed ram area in MMU
author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
---|---|
date | Sun, 15 Jul 2018 20:29:55 +0900 |
parents | 2032755628dc |
children | 52f7ad4c2ebb |
rev | line source |
---|---|
33 | 1 /* A09, 6809 Assembler2 |
0 | 2 |
3 created 1993,1994 by L.C. Benschop. | |
4 copyleft (c) 1994-2014 by the sbc09 team, see AUTHORS for more details. | |
5 license: GNU General Public License version 2, see LICENSE for more details. | |
6 THERE IS NO WARRANTY ON THIS PROGRAM. | |
7 | |
8 Generates binary image file from the lowest to | |
9 the highest address with actually assembled data. | |
10 | |
5 | 11 Machin edependencies: |
0 | 12 char is 8 bits. |
13 short is 16 bits. | |
14 integer arithmetic is twos complement. | |
15 | |
16 syntax a09 [-o filename] [-l filename] sourcefile. | |
17 | |
18 Options | |
19 -o filename name of the output file (default name minus a09 suffix) | |
20 -s filename name of the s-record output file (default its a binary file) | |
21 -l filename list file name (default no listing) | |
22 -d enable debugging | |
23 | |
24 recognized pseudoops: | |
25 extern public | |
26 macro endm if else endif | |
27 org equ set setdp | |
28 fcb fcw fdb fcc rmb | |
29 end include title | |
30 | |
31 Not all of these are actually IMPLEMENTED!!!!!! | |
32 | |
33 Revisions: | |
34 1993-11-03 v0.1 | |
35 Initial version. | |
36 1994/03/21 v0.2 | |
37 Fixed PC relative addressing bug | |
38 Added SET, SETDP, INCLUDE. IF/ELSE/ENDIF | |
39 No macros yet, and no separate linkable modules. | |
40 2012-06-04 j at klasek at | |
41 New: debugging parameter/option. | |
42 Fixed additional possible issue PC relative addressing. | |
43 Compatibility: Octal number prefix "&". | |
44 2014-07-15 j at klasek at | |
45 Fixed usage message. | |
29
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46 2018-07-11 |
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47 leax $ED00/256,x kernel offset in map |
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48 should be positive offset expr should be int(32bit) |
0 | 49 */ |
50 | |
51 #include <stdlib.h> | |
52 #include <stdio.h> | |
53 #include <string.h> | |
54 #include <ctype.h> | |
55 | |
56 #define NLABELS 2048 | |
57 #define MAXIDLEN 16 | |
58 #define MAXLISTBYTES 8 | |
59 #define FNLEN 30 | |
60 #define LINELEN 128 | |
61 | |
62 static int debug=0; | |
33 | 63 static struct incl { |
64 char *name; | |
65 struct incl *next; | |
66 } *incls = 0; | |
67 | |
68 static struct longer { | |
69 int gline; | |
70 int change; | |
71 struct longer *next; | |
72 } *lglist = 0; | |
73 | |
74 void makelonger(int gl) { | |
75 for(struct longer *p=lglist;p;p=p->next) { | |
76 if (p->gline==gl) { // already fixed | |
77 p->change = 1; | |
78 return; | |
79 } | |
80 } | |
81 struct longer *p = (struct longer *)calloc(sizeof(struct longer *),1); | |
82 p->gline=gl; | |
83 p->next = lglist; | |
84 lglist = p; | |
85 } | |
86 | |
87 int longer() { | |
88 for(struct longer *p=lglist;p;p=p->next) { | |
89 if (p->change == 0) return 1; | |
90 } | |
91 return 0; | |
92 } | |
0 | 93 |
94 struct oprecord{char * name; | |
95 unsigned char cat; | |
96 unsigned short code;}; | |
97 | |
98 /* Instruction categories: | |
99 0 one byte oprcodes NOP | |
100 1 two byte opcodes SWI2 | |
101 2 opcodes w. imm byte ANDCC | |
102 3 LEAX etc. | |
103 4 short branches. BGE | |
104 5 long branches 2byte opc LBGE | |
105 6 long branches 1byte opc LBRA | |
106 7 accumulator instr. ADDA | |
107 8 double reg instr 1byte opc LDX | |
108 9 double reg instr 2 byte opc LDY | |
109 10 single address instrs NEG | |
110 11 TFR, EXG | |
111 12 push,pull | |
112 13 pseudoops | |
113 */ | |
114 | |
115 struct oprecord optable[]={ | |
116 {"ABX",0,0x3a},{"ADCA",7,0x89},{"ADCB",7,0xc9}, | |
117 {"ADDA",7,0x8b},{"ADDB",7,0xcb},{"ADDD",8,0xc3}, | |
118 {"ANDA",7,0X84},{"ANDB",7,0xc4},{"ANDCC",2,0x1c}, | |
119 {"ASL",10,0x08},{"ASLA",0,0x48},{"ASLB",0,0x58}, | |
120 {"ASR",10,0x07},{"ASRA",0,0x47},{"ASRB",0,0x57}, | |
121 {"BCC",4,0x24},{"BCS",4,0x25},{"BEQ",4,0x27}, | |
122 {"BGE",4,0x2c},{"BGT",4,0x2e},{"BHI",4,0x22}, | |
123 {"BHS",4,0x24},{"BITA",7,0x85},{"BITB",7,0xc5}, | |
124 {"BLE",4,0x2f},{"BLO",4,0x25},{"BLS",4,0x23}, | |
125 {"BLT",4,0x2d},{"BMI",4,0x2b},{"BNE",4,0x26}, | |
126 {"BPL",4,0x2a},{"BRA",4,0x20},{"BRN",4,0x21}, | |
127 {"BSR",4,0x8d}, | |
128 {"BVC",4,0x28},{"BVS",4,0x29}, | |
129 {"CLC",1,0x1cfe},{"CLF",1,0x1cbf},{"CLI",1,0x1cef}, | |
130 {"CLIF",1,0x1caf}, | |
131 {"CLR",10,0x0f},{"CLRA",0,0x4f},{"CLRB",0,0x5f}, | |
132 {"CLV",1,0x1cfd}, | |
133 {"CMPA",7,0x81},{"CMPB",7,0xc1},{"CMPD",9,0x1083}, | |
134 {"CMPS",9,0x118c},{"CMPU",9,0x1183},{"CMPX",8,0x8c}, | |
135 {"CMPY",9,0x108c}, | |
136 {"COM",10,0x03},{"COMA",0,0x43},{"COMB",0,0x53}, | |
137 {"CWAI",2,0x3c},{"DAA",0,0x19}, | |
138 {"DEC",10,0x0a},{"DECA",0,0x4a},{"DECB",0,0x5a}, | |
139 {"DES",1,0x327f},{"DEU",1,0x335f},{"DEX",1,0x301f}, | |
140 {"DEY",1,0x313f}, | |
141 {"ELSE",13,1}, | |
142 {"EMOD",13,25}, | |
143 {"END",13,2}, | |
144 {"ENDC",13,3}, | |
145 {"ENDIF",13,3}, | |
146 {"ENDM",13,4}, | |
147 {"EORA",7,0x88},{"EORB",7,0xc8}, | |
148 {"EQU",13,5},{"EXG",11,0x1e},{"EXTERN",13,6}, | |
149 {"FCB",13,7},{"FCC",13,8}, | |
150 {"FCS",13,23}, | |
151 {"FCW",13,9}, | |
152 {"FDB",13,9}, | |
153 {"IF",13,10}, | |
33 | 154 {"IFEQ",13,30}, |
155 {"IFGT",13,29}, | |
156 {"IFNDEF",13,33}, | |
0 | 157 {"IFNE",13,28}, |
158 {"IFP1",13,21}, | |
159 {"INC",10,0x0c},{"INCA",0,0x4c},{"INCB",0,0x5c}, | |
160 {"INCLUDE",13,16}, | |
161 {"INS",1,0x3261},{"INU",1,0x3341},{"INX",1,0x3001}, | |
162 {"INY",1,0x3121},{"JMP",10,0x0e},{"JSR",8,0x8d}, | |
163 {"LBCC",5,0x1024},{"LBCS",5,0x1025},{"LBEQ",5,0x1027}, | |
164 {"LBGE",5,0x102c},{"LBGT",5,0x102e},{"LBHI",5,0x1022}, | |
165 {"LBHS",5,0x1024}, | |
166 {"LBLE",5,0x102f},{"LBLO",5,0x1025},{"LBLS",5,0x1023}, | |
167 {"LBLT",5,0x102d},{"LBMI",5,0x102b},{"LBNE",5,0x1026}, | |
168 {"LBPL",5,0x102a},{"LBRA",6,0x16},{"LBRN",5,0x1021}, | |
169 {"LBSR",6,0x17}, | |
170 {"LBVC",5,0x1028},{"LBVS",5,0x1029}, | |
171 {"LDA",7,0x86},{"LDB",7,0xc6},{"LDD",8,0xcc}, | |
172 {"LDS",9,0x10ce},{"LDU",8,0xce},{"LDX",8,0x8e}, | |
173 {"LDY",9,0x108e},{"LEAS",3,0x32}, | |
174 {"LEAU",3,0x33},{"LEAX",3,0x30},{"LEAY",3,0x31}, | |
175 {"LSL",10,0x08},{"LSLA",0,0x48},{"LSLB",0,0x58}, | |
176 {"LSR",10,0x04},{"LSRA",0,0x44},{"LSRB",0,0x54}, | |
177 {"MACRO",13,11}, | |
178 {"MOD",13,24}, | |
179 {"MUL",0,0x3d}, | |
180 {"NAM",13,26}, | |
181 {"NEG",10,0x00},{"NEGA",0,0x40},{"NEGB",0,0x50}, | |
182 {"NOP",0,0x12}, | |
183 {"OPT",13,19}, | |
184 {"ORA",7,0x8a},{"ORB",7,0xca},{"ORCC",2,0x1a}, | |
185 {"ORG",13,12}, | |
186 {"OS9",13,32}, | |
187 {"PAG",13,20}, {"PAGE",13,20}, | |
188 {"PSHS",12,0x34},{"PSHU",12,0x36},{"PUBLIC",13,13}, | |
189 {"PULS",12,0x35},{"PULU",12,0x37},{"RMB",13,0}, | |
190 {"ROL",10,0x09},{"ROLA",0,0x49},{"ROLB",0,0x59}, | |
191 {"ROR",10,0x06},{"RORA",0,0x46},{"RORB",0,0x56}, | |
192 {"RTI",0,0x3b},{"RTS",0,0x39}, | |
193 {"SBCA",7,0x82},{"SBCB",7,0xc2}, | |
194 {"SEC",1,0x1a01},{"SEF",1,0x1a40},{"SEI",1,0x1a10}, | |
195 {"SEIF",1,0x1a50},{"SET",13,15}, | |
196 {"SETDP",13,14},{"SEV",1,0x1a02},{"SEX",0,0x1d}, | |
197 {"STA",7,0x87},{"STB",7,0xc7},{"STD",8,0xcd}, | |
198 {"STS",9,0x10cf},{"STU",8,0xcf},{"STX",8,0x8f}, | |
199 {"STY",9,0x108f}, | |
200 {"SUBA",7,0x80},{"SUBB",7,0xc0},{"SUBD",8,0x83}, | |
201 {"SWI",0,0x3f},{"SWI2",1,0x103f},{"SWI3",1,0x113f}, | |
202 {"SYNC",0,0x13},{"TFR",11,0x1f}, | |
203 {"TITLE",13,18}, | |
204 {"TST",10,0x0d},{"TSTA",0,0x4d},{"TSTB",0,0x5d}, | |
205 {"TTL",13,18}, | |
206 {"USE",13,27}, | |
207 }; | |
208 | |
209 struct symrecord{char name[MAXIDLEN+1]; | |
210 char cat; | |
211 unsigned short value; | |
33 | 212 struct symrecord *next; |
0 | 213 }; |
214 | |
215 int symcounter=0; | |
34 | 216 int os9 = 0; // os9 flag |
217 int rmbmode = 0; // in os9 work area | |
26 | 218 struct symrecord * prevlp = 0; |
0 | 219 |
8 | 220 /* expression categories... |
221 ECORD all zeros is ordinary constant. | |
222 ECADR bit 1 indicates address within module. | |
223 ECEXT bit 2 indicates external address. | |
224 ECLBL bit 3 public label | |
225 ECABS bit 4 indicates this can't be relocated if it's an address. | |
226 ECNEG bit 5 indicates address (if any) is negative. | |
227 */ | |
228 | |
229 | |
230 /* Symbol categories. exprcat ( symcat & 0xe ) | |
231 0 SCC Constant value (from equ). ECORD | |
232 1 SCV Variable value (from set) ECORD | |
233 2 SCC__ADR Address within program module (label). ECADR | |
234 3 SCV__ADR Variable containing address. ECADR | |
235 4 SC_E_ADR Adress in other program module (extern) ECEXT | |
236 5 SCVE_ADR Variable containing external address. ECEXT | |
237 6 SCU _ADR Unresolved address. ECEXT+ECADR | |
238 7 SCV_UADR Variable containing unresolved address. ECEXT+ECADR | |
239 8 SC___LBL Public label. ECLBL | |
240 9 SCMACRO Macro definition. xxx | |
241 10 SCU__LBL Public label (yet undefined). ECADR+ECLBL | |
242 11 SCPARAM parameter name. ECADR+ECLBL | |
243 12 SCLOCAL local label. ECEXT+ECLBL | |
244 13 SCEMPTY empty. xxx | |
0 | 245 */ |
246 | |
247 struct symrecord symtable[NLABELS]; | |
248 | |
249 void processfile(char *name); | |
250 | |
251 struct oprecord * findop(char * nm) | |
252 /* Find operation (mnemonic) in table using binary search */ | |
253 { | |
254 int lo,hi,i,s; | |
255 lo=0;hi=sizeof(optable)/sizeof(optable[0])-1; | |
256 do { | |
257 i=(lo+hi)/2; | |
258 s=strcmp(optable[i].name,nm); | |
259 if(s<0) lo=i+1; | |
260 else if(s>0) hi=i-1; | |
261 else break; | |
262 } while(hi>=lo); | |
263 if (s) return NULL; | |
264 return optable+i; | |
265 } | |
266 | |
267 struct symrecord * findsym(char * nm) | |
268 /* finds symbol table record; inserts if not found | |
269 uses binary search, maintains sorted table */ | |
270 { | |
271 int lo,hi,i,j,s; | |
272 lo=0;hi=symcounter-1; | |
273 s=1;i=0; | |
274 while (hi>=lo) { | |
275 i=(lo+hi)/2; | |
276 s=strcmp(symtable[i].name,nm); | |
277 if(s<0) lo=i+1; | |
278 else if(s>0) hi=i-1; | |
279 else break; | |
280 } | |
281 if(s) { | |
282 i=(s<0?i+1:i); | |
283 if(symcounter==NLABELS) { | |
284 fprintf(stderr,"Sorry, no storage for symbols!!!"); | |
285 exit(4); | |
286 } | |
287 for(j=symcounter;j>i;j--) symtable[j]=symtable[j-1]; | |
288 symcounter++; | |
289 strcpy(symtable[i].name,nm); | |
290 symtable[i].cat=13; | |
291 } | |
292 return symtable+i; | |
293 } | |
294 | |
295 FILE *listfile,*objfile; | |
296 char *listname,*objname,*srcname,*curname; | |
33 | 297 int lineno,glineno; |
0 | 298 |
299 void | |
300 outsymtable() | |
301 { | |
302 int i,j=0; | |
303 fprintf(listfile,"\nSYMBOL TABLE"); | |
304 for(i=0;i<symcounter;i++) | |
305 if(symtable[i].cat!=13) { | |
306 if(j%4==0)fprintf(listfile,"\n"); | |
307 fprintf(listfile,"%10s %02d %04x",symtable[i].name,symtable[i].cat, | |
308 symtable[i].value); | |
309 j++; | |
310 } | |
311 fprintf(listfile,"\n"); | |
312 } | |
313 | |
314 struct regrecord{char *name;unsigned char tfr,psh;}; | |
315 struct regrecord regtable[]= | |
316 {{"D",0x00,0x06},{"X",0x01,0x10},{"Y",0x02,0x20}, | |
317 {"U",0x03,0x40},{"S",0x04,0x40},{"PC",0x05,0x80}, | |
318 {"A",0x08,0x02},{"B",0x09,0x04},{"CC",0x0a,0x01}, | |
319 {"CCR",0x0a,0x01},{"DP",0x0b,0x08},{"DPR",0x0b,0x08}}; | |
320 | |
321 struct regrecord * findreg(char *nm) | |
322 { | |
323 int i; | |
324 for(i=0;i<12;i++) { | |
325 if(strcmp(regtable[i].name,nm)==0) return regtable+i; | |
326 } | |
327 return 0; | |
328 } | |
329 | |
330 | |
331 char pass; /* Assembler pass=1 or 2 */ | |
332 char listing; /* flag to indicate listing */ | |
333 char relocatable; /* flag to indicate relocatable object. */ | |
334 char terminate; /* flag to indicate termination. */ | |
335 char generating; /* flag to indicate that we generate code */ | |
34 | 336 unsigned short loccounter,oldlc,prevloc,rmbcounter; /* Location counter */ |
0 | 337 |
338 char inpline[128]; /* Current input line (not expanded)*/ | |
339 char srcline[128]; /* Current source line */ | |
340 char * srcptr; /* Pointer to line being parsed */ | |
341 | |
342 char unknown; /* flag to indicate value unknown */ | |
343 char certain; /* flag to indicate value is certain at pass 1*/ | |
344 int error; /* flags indicating errors in current line. */ | |
345 int errors; /* number of errors */ | |
346 char exprcat; /* category of expression being parsed, eg. | |
347 label or constant, this is important when | |
348 generating relocatable object code. */ | |
349 | |
6 | 350 void generate() |
351 { | |
352 generating = 1; | |
34 | 353 if (rmbmode) { |
354 rmbcounter = loccounter; | |
355 oldlc = loccounter = prevloc; | |
356 rmbmode = 0; | |
6 | 357 } |
358 } | |
359 | |
0 | 360 |
361 char namebuf[MAXIDLEN+1]; | |
362 | |
363 void | |
364 err(int er) { | |
365 error |= er ; | |
366 } | |
367 | |
368 void | |
369 scanname() | |
370 { | |
371 int i=0; | |
372 char c; | |
373 while(1) { | |
374 c=*srcptr++; | |
375 if(c>='a'&&c<='z')c-=32; | |
33 | 376 if(c!='_'&&c!='@'&&c!='.'&&c!='$'&&(c<'0'||c>'9')&&(c<'A'||c>'Z'))break; |
0 | 377 if(i<MAXIDLEN)namebuf[i++]=c; |
378 } | |
379 namebuf[i]=0; | |
380 srcptr--; | |
381 } | |
382 | |
383 void | |
384 skipspace() | |
385 { | |
386 char c; | |
387 do { | |
388 c=*srcptr++; | |
389 } while(c==' '||c=='\t'); | |
390 srcptr--; | |
391 } | |
392 | |
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393 int scanexpr(int); |
0 | 394 |
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395 int scandecimal() |
0 | 396 { |
397 char c; | |
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398 int t=0; |
0 | 399 c=*srcptr++; |
400 while(isdigit(c)) { | |
401 t=t*10+c-'0'; | |
402 c=*srcptr++; | |
403 } | |
404 srcptr--; | |
405 return t; | |
406 } | |
407 | |
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408 int scanhex() |
0 | 409 { |
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410 int t=0,i=0; |
0 | 411 srcptr++; |
412 scanname(); | |
413 while(namebuf[i]>='0'&&namebuf[i]<='F') { | |
414 t=t*16+namebuf[i]-'0'; | |
415 if(namebuf[i]>'9')t-=7; | |
416 i++; | |
417 } | |
418 if(i==0)error|=1; | |
419 return t; | |
420 } | |
421 | |
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422 int scanchar() |
0 | 423 { |
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424 int t; |
0 | 425 srcptr++; |
426 t=*srcptr; | |
427 if(t)srcptr++; | |
428 if (*srcptr=='\'')srcptr++; | |
429 return t; | |
430 } | |
431 | |
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432 int scanbin() |
0 | 433 { |
434 char c; | |
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435 int t=0; |
0 | 436 srcptr++; |
437 c=*srcptr++; | |
438 while(c=='0'||c=='1') { | |
439 t=t*2+c-'0'; | |
440 c=*srcptr++; | |
441 } | |
442 srcptr--; | |
443 return t; | |
444 } | |
445 | |
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446 int scanoct() |
0 | 447 { |
448 char c; | |
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449 int t=0; |
0 | 450 srcptr++; |
451 c=*srcptr++; | |
452 while(c>='0'&&c<='7') { | |
453 t=t*8+c-'0'; | |
454 c=*srcptr++; | |
455 } | |
456 srcptr--; | |
457 return t; | |
458 } | |
459 | |
460 | |
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461 int scanlabel() |
0 | 462 { |
463 struct symrecord * p; | |
464 scanname(); | |
465 p=findsym(namebuf); | |
466 if(p->cat==13) { | |
467 p->cat=6; | |
468 p->value=0; | |
469 } | |
470 if(p->cat==9||p->cat==11)error|=1; | |
471 exprcat=p->cat&14; | |
472 if(exprcat==6||exprcat==10)unknown=1; | |
473 if(((exprcat==2||exprcat==8) | |
474 && (unsigned short)(p->value)>(unsigned short)loccounter)|| | |
475 exprcat==4) | |
476 certain=0; | |
477 if(exprcat==8||exprcat==6||exprcat==10)exprcat=2; | |
478 return p->value; | |
479 } | |
480 | |
481 | |
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482 int scanfactor() |
0 | 483 { |
484 char c; | |
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485 int t; |
0 | 486 skipspace(); |
487 c=*srcptr; | |
488 if(isalpha(c))return scanlabel(); | |
489 else if(isdigit(c))return scandecimal(); | |
490 else switch(c) { | |
34 | 491 case '*' : srcptr++;exprcat|=2; if(rmbmode) return prevloc; else return loccounter; |
492 case '.' : srcptr++;exprcat|=2; if(os9&&!rmbmode) return rmbcounter; else return loccounter; | |
0 | 493 case '$' : return scanhex(); |
494 case '%' : return scanbin(); | |
495 case '&' : /* compatibility */ | |
496 case '@' : return scanoct(); | |
497 case '\'' : return scanchar(); | |
498 case '(' : srcptr++;t=scanexpr(0);skipspace(); | |
499 if(*srcptr==')')srcptr++;else error|=1; | |
500 return t; | |
501 case '-' : srcptr++;exprcat^=32;return -scanfactor(); | |
502 case '+' : srcptr++;return scanfactor(); | |
503 case '!' : srcptr++;exprcat|=16;return !scanfactor(); | |
504 case '^' : | |
505 case '~' : srcptr++;exprcat|=16;return ~scanfactor(); | |
506 } | |
507 error|=1; | |
508 return 0; | |
509 } | |
510 | |
511 #define EXITEVAL {srcptr--;return t;} | |
512 | |
513 #define RESOLVECAT if((oldcat&15)==0)oldcat=0;\ | |
514 if((exprcat&15)==0)exprcat=0;\ | |
515 if((exprcat==2&&oldcat==34)||(exprcat==34&&oldcat==2)) {\ | |
516 exprcat=0;\ | |
517 oldcat=0;}\ | |
518 exprcat|=oldcat;\ | |
519 /* resolve such cases as constant added to address or difference between | |
520 two addresses in same module */ | |
521 | |
522 | |
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523 int scanexpr(int level) /* This is what you call _recursive_ descent!!!*/ |
0 | 524 { |
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changeset
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525 int t,u; |
0 | 526 char oldcat,c; |
527 exprcat=0; | |
528 if(level==10)return scanfactor(); | |
529 t=scanexpr(level+1); | |
530 while(1) { | |
5 | 531 // skipspace(); |
0 | 532 c=*srcptr++; |
533 switch(c) { | |
534 case '*':oldcat=exprcat; | |
535 t*=scanexpr(10); | |
536 exprcat|=oldcat|16; | |
537 break; | |
538 case '/':oldcat=exprcat; | |
539 u=scanexpr(10); | |
540 if(u)t/=u;else error|=1; | |
541 exprcat|=oldcat|16; | |
542 break; | |
543 case '%':oldcat=exprcat; | |
544 u=scanexpr(10); | |
545 if(u)t%=u;else error|=1; | |
546 exprcat|=oldcat|16; | |
547 break; | |
548 case '+':if(level==9)EXITEVAL | |
549 oldcat=exprcat; | |
550 t+=scanexpr(9); | |
551 RESOLVECAT | |
552 break; | |
553 case '-':if(level==9)EXITEVAL | |
554 oldcat=exprcat; | |
555 t-=scanexpr(9); | |
556 exprcat^=32; | |
557 RESOLVECAT | |
558 break; | |
559 case '<':if(*(srcptr)=='<') { | |
560 if(level>=8)EXITEVAL | |
561 srcptr++; | |
562 oldcat=exprcat; | |
563 t<<=scanexpr(8); | |
564 exprcat|=oldcat|16; | |
565 break; | |
566 } else if(*(srcptr)=='=') { | |
567 if(level>=7)EXITEVAL | |
568 srcptr++; | |
569 oldcat=exprcat; | |
570 t=t<=scanexpr(7); | |
571 exprcat|=oldcat|16; | |
572 break; | |
573 } else { | |
574 if(level>=7)EXITEVAL | |
575 oldcat=exprcat; | |
576 t=t<scanexpr(7); | |
577 exprcat|=oldcat|16; | |
578 break; | |
579 } | |
580 case '>':if(*(srcptr)=='>') { | |
581 if(level>=8)EXITEVAL | |
582 srcptr++; | |
583 oldcat=exprcat; | |
584 t>>=scanexpr(8); | |
585 exprcat|=oldcat|16; | |
586 break; | |
587 } else if(*(srcptr)=='=') { | |
588 if(level>=7)EXITEVAL | |
589 srcptr++; | |
590 oldcat=exprcat; | |
591 t=t>=scanexpr(7); | |
592 exprcat|=oldcat|16; | |
593 break; | |
594 } else { | |
595 if(level>=7)EXITEVAL | |
596 oldcat=exprcat; | |
597 t=t>scanexpr(7); | |
598 exprcat|=oldcat|16; | |
599 break; | |
600 } | |
5 | 601 case '!':if(level>=6) { |
602 if (*srcptr=='=') { | |
603 srcptr++; | |
604 oldcat=exprcat; | |
605 t=t!=scanexpr(6); | |
606 exprcat|=oldcat|16; | |
607 } else { | |
608 oldcat=exprcat; | |
609 t|=scanexpr(6); | |
610 exprcat|=oldcat|16; | |
611 } | |
612 } | |
0 | 613 break; |
614 case '=':if(level>=6)EXITEVAL | |
615 if(*srcptr=='=')srcptr++; | |
616 oldcat=exprcat; | |
617 t=t==scanexpr(6); | |
618 exprcat|=oldcat|16; | |
619 break; | |
620 case '&':if(level>=5)EXITEVAL | |
621 oldcat=exprcat; | |
622 t&=scanexpr(5); | |
623 exprcat|=oldcat|16; | |
624 break; | |
625 case '^':if(level>=4)EXITEVAL | |
626 oldcat=exprcat; | |
627 t^=scanexpr(4); | |
628 exprcat|=oldcat|16; | |
629 break; | |
630 case '|':if(level>=3)EXITEVAL | |
631 oldcat=exprcat; | |
632 t|=scanexpr(3); | |
633 exprcat|=oldcat|16; | |
634 default: EXITEVAL | |
635 } | |
636 } | |
637 } | |
638 | |
639 char mode; /* addressing mode 0=immediate,1=direct,2=extended,3=postbyte | |
640 4=pcrelative(with postbyte) 5=indirect 6=pcrel&indirect*/ | |
641 char opsize; /*desired operand size 0=dunno,1=5,2=8,3=16*/ | |
642 short operand; | |
643 unsigned char postbyte; | |
644 | |
645 int dpsetting; | |
646 | |
647 | |
648 int scanindexreg() | |
649 { | |
650 char c; | |
651 c=*srcptr; | |
652 if(islower(c))c-=32; | |
653 if (debug) fprintf(stderr,"DEBUG: scanindexreg: indexreg=%d, mode=%d, opsize=%d, error=%d, postbyte=%02X\n",c,mode,opsize,error,postbyte); | |
654 switch(c) { | |
655 case 'X':return 1; | |
656 case 'Y':postbyte|=0x20;return 1; | |
657 case 'U':postbyte|=0x40;return 1; | |
658 case 'S':postbyte|=0x60;return 1; | |
659 default: return 0; | |
660 } | |
661 } | |
662 | |
663 void | |
664 set3() | |
665 { | |
666 if(mode<3)mode=3; | |
667 } | |
668 | |
669 void | |
670 scanspecial() | |
671 { | |
672 set3(); | |
673 skipspace(); | |
674 if(*srcptr=='-') { | |
675 srcptr++; | |
676 if(*srcptr=='-') { | |
677 srcptr++; | |
678 postbyte=0x83; | |
679 } else postbyte=0x82; | |
680 if(!scanindexreg())error|=2;else srcptr++; | |
681 } else { | |
682 postbyte=0x80; | |
683 if(!scanindexreg())error|=2;else srcptr++; | |
684 if(*srcptr=='+') { | |
685 srcptr++; | |
686 if(*srcptr=='+') { | |
687 srcptr++; | |
688 postbyte+=1; | |
689 } | |
690 } else postbyte+=4; | |
691 } | |
692 } | |
693 | |
694 void | |
695 scanindexed() | |
696 { | |
697 set3(); | |
698 postbyte=0; | |
699 if(scanindexreg()) { | |
700 srcptr++; | |
701 if(opsize==0) { | |
702 if(unknown||!certain)opsize=3; | |
703 else if(operand>=-16&&operand<16&&mode==3)opsize=1; | |
704 else if(operand>=-128&&operand<128)opsize=2; | |
705 else opsize=3; | |
706 } | |
707 switch(opsize) { | |
708 case 1:postbyte+=(operand&31);opsize=0;break; | |
709 case 2:postbyte+=0x88;break; | |
710 case 3:postbyte+=0x89;break; | |
711 } | |
712 } else { /*pc relative*/ | |
713 if(toupper(*srcptr)!='P')error|=2; | |
714 else { | |
715 srcptr++; | |
716 if(toupper(*srcptr)!='C')error|=2; | |
717 else { | |
718 srcptr++; | |
719 if(toupper(*srcptr)=='R')srcptr++; | |
720 } | |
721 } | |
722 mode++;postbyte+=0x8c; | |
723 if(opsize==1)opsize=2; | |
724 } | |
725 } | |
726 | |
727 #define RESTORE {srcptr=oldsrcptr;c=*srcptr;goto dodefault;} | |
728 | |
729 void | |
730 scanoperands() | |
731 { | |
732 char c,d,*oldsrcptr; | |
733 unknown=0; | |
734 opsize=0; | |
735 certain=1; | |
736 skipspace(); | |
737 c=*srcptr; | |
738 mode=0; | |
739 if(c=='[') { | |
740 srcptr++; | |
741 c=*srcptr; | |
742 mode=5; | |
743 } | |
744 if (debug) fprintf(stderr,"DEBUG: scanoperands: c=%c (%02X)\n",c,c); | |
745 switch(c) { | |
746 case 'D': case 'd': | |
747 oldsrcptr=srcptr; | |
748 srcptr++; | |
749 skipspace(); | |
750 if(*srcptr!=',')RESTORE else { | |
751 postbyte=0x8b; | |
752 srcptr++; | |
753 if(!scanindexreg())RESTORE else {srcptr++;set3();} | |
754 } | |
755 break; | |
756 case 'A': case 'a': | |
757 oldsrcptr=srcptr; | |
758 srcptr++; | |
759 skipspace(); | |
760 if(*srcptr!=',')RESTORE else { | |
761 postbyte=0x86; | |
762 srcptr++; | |
763 if(!scanindexreg())RESTORE else {srcptr++;set3();} | |
764 } | |
765 break; | |
766 case 'B': case 'b': | |
767 oldsrcptr=srcptr; | |
768 srcptr++; | |
769 skipspace(); | |
770 if(*srcptr!=',')RESTORE else { | |
771 postbyte=0x85; | |
772 srcptr++; | |
773 if (debug) fprintf(stderr,"DEBUG: scanoperands: breg preindex: c=%c (%02X)\n",*srcptr,*srcptr); | |
774 if(!scanindexreg())RESTORE else {srcptr++;set3();} | |
775 if (debug) fprintf(stderr,"DEBUG: scanoperands: breg: postindex c=%c (%02X)\n",*srcptr,*srcptr); | |
776 } | |
777 break; | |
778 case ',': | |
779 srcptr++; | |
780 scanspecial(); | |
781 break; | |
782 case '#': | |
783 if(mode==5)error|=2;else mode=0; | |
784 srcptr++; | |
5 | 785 if (*srcptr=='"') { |
786 operand = (srcptr[1]<<8) + srcptr[2] ; | |
787 srcptr += 3; | |
788 break; | |
789 } | |
0 | 790 operand=scanexpr(0); |
791 break; | |
792 case '<': | |
793 srcptr++; | |
794 if(*srcptr=='<') { | |
795 srcptr++; | |
796 opsize=1; | |
797 } else opsize=2; | |
798 goto dodefault; | |
799 case '>': | |
800 srcptr++; | |
801 opsize=3; | |
802 default: dodefault: | |
803 operand=scanexpr(0); | |
804 skipspace(); | |
805 if(*srcptr==',') { | |
806 srcptr++; | |
807 scanindexed(); | |
808 } else { | |
809 if(opsize==0) { | |
810 if(unknown||!certain||dpsetting==-1|| | |
811 (unsigned short)(operand-dpsetting*256)>=256) | |
812 opsize=3; else opsize=2; | |
813 } | |
814 if(opsize==1)opsize=2; | |
815 if(mode==5){ | |
816 postbyte=0x8f; | |
817 opsize=3; | |
818 } else mode=opsize-1; | |
819 } | |
820 } | |
821 if (debug) fprintf(stderr,"DEBUG: scanoperands: mode=%d, error=%d, postbyte=%02X\n",mode,error,postbyte); | |
822 if(mode>=5) { | |
823 skipspace(); | |
824 postbyte|=0x10; | |
825 if(*srcptr!=']')error|=2;else srcptr++; | |
826 } | |
827 if(pass==2&&unknown)error|=4; | |
828 } | |
829 | |
830 unsigned char codebuf[128]; | |
831 int codeptr; /* byte offset within instruction */ | |
832 int suppress; /* 0=no suppress 1=until ENDIF 2=until ELSE 3=until ENDM */ | |
833 int ifcount; /* count of nested IFs within suppressed text */ | |
834 | |
835 unsigned char outmode; /* 0 is binary, 1 is s-records */ | |
836 | |
837 unsigned short hexaddr; | |
838 int hexcount; | |
839 unsigned char hexbuffer[16]; | |
840 unsigned int chksum; | |
841 | |
842 extern int os9crc(unsigned char c, int crcp); | |
843 int crc; | |
844 | |
845 void | |
846 reset_crc() | |
847 { | |
848 crc = -1; | |
849 } | |
850 | |
851 | |
852 void | |
853 flushhex() | |
854 { | |
855 int i; | |
856 if(hexcount){ | |
857 fprintf(objfile,"S1%02X%04X",(hexcount+3)&0xff,hexaddr&0xffff); | |
858 for(i=0;i<hexcount;i++)fprintf(objfile,"%02X",hexbuffer[i]); | |
859 chksum+=(hexaddr&0xff)+((hexaddr>>8)&0xff)+hexcount+3; | |
860 fprintf(objfile,"%02X\n",0xff-(chksum&0xff)); | |
861 hexaddr+=hexcount; | |
862 hexcount=0; | |
863 chksum=0; | |
864 } | |
865 } | |
866 | |
867 void | |
868 outhex(unsigned char x) | |
869 { | |
870 if(hexcount==16)flushhex(); | |
871 hexbuffer[hexcount++]=x; | |
872 chksum+=x; | |
873 } | |
874 | |
875 void | |
876 outbuffer() | |
877 { | |
878 int i; | |
879 for(i=0;i<codeptr;i++) { | |
880 crc = os9crc(codebuf[i],crc); | |
881 if(!outmode)fputc(codebuf[i],objfile);else outhex(codebuf[i]); | |
882 } | |
883 } | |
884 | |
885 char *errormsg[]={"Error in expression", | |
886 "Illegal addressing mode", | |
887 "Undefined label", | |
888 "Multiple definitions of label", | |
889 "Relative branch out of range", | |
890 "Missing label", | |
891 "","","","","","","","","", | |
892 "Illegal mnemonic" | |
893 }; | |
894 | |
895 void | |
896 report() | |
897 { | |
898 int i; | |
899 fprintf(stderr,"File %s, line %d:%s\n",curname,lineno,srcline); | |
900 for(i=0;i<16;i++) { | |
901 if(error&1) { | |
902 fprintf(stderr,"%s\n",errormsg[i]); | |
903 if(pass==2&&listing)fprintf(listfile,"**** %s\n",errormsg[i]); | |
904 } | |
905 error>>=1; | |
906 } | |
5 | 907 error = 0; |
0 | 908 errors++; |
909 } | |
910 | |
911 void | |
912 outlist() | |
913 { | |
914 int i; | |
915 fprintf(listfile,"%04X: ",oldlc); | |
916 for(i=0;i<codeptr&&i<MAXLISTBYTES;i++) | |
917 fprintf(listfile,"%02X",codebuf[i]); | |
918 for(;i<=MAXLISTBYTES;i++) | |
919 fprintf(listfile," "); | |
920 fprintf(listfile,"%s\n",srcline); | |
921 while(i<codeptr) { | |
922 fprintf(listfile,"%04X: ",oldlc + i); | |
923 for(int j=0;i<codeptr&&j<MAXLISTBYTES;j++) { | |
924 fprintf(listfile,"%02X",codebuf[i]); i++; | |
925 } | |
926 fprintf(listfile,"\n"); | |
927 } | |
928 } | |
929 | |
930 void | |
931 setlabel(struct symrecord * lp) | |
932 { | |
33 | 933 while (prevlp) { |
26 | 934 struct symrecord *l = prevlp; |
33 | 935 prevlp = prevlp->next; |
26 | 936 setlabel(l); |
937 } | |
0 | 938 if(lp) { |
939 if(lp->cat!=13&&lp->cat!=6) { | |
940 if(lp->cat!=2||lp->value!=loccounter) | |
33 | 941 ; // error|=8; |
0 | 942 } else { |
943 lp->cat=2; | |
944 lp->value=loccounter; | |
945 } | |
946 } | |
947 } | |
948 | |
949 void | |
950 putbyte(unsigned char b) | |
951 { | |
952 codebuf[codeptr++]=b; | |
953 } | |
954 | |
955 void | |
956 putword(unsigned short w) | |
957 { | |
958 codebuf[codeptr++]=w>>8; | |
959 codebuf[codeptr++]=w&0x0ff; | |
960 } | |
961 | |
962 void | |
963 doaddress() /* assemble the right addressing bytes for an instruction */ | |
964 { | |
965 int offs; | |
966 switch(mode) { | |
967 case 0: if(opsize==2)putbyte(operand);else putword(operand);break; | |
968 case 1: putbyte(operand);break; | |
969 case 2: putword(operand);break; | |
970 case 3: case 5: putbyte(postbyte); | |
971 switch(opsize) { | |
972 case 2: putbyte(operand);break; | |
973 case 3: putword(operand); | |
974 } | |
975 break; | |
976 case 4: case 6: offs=(unsigned short)operand-loccounter-codeptr-2; | |
977 if(offs<-128||offs>=128||opsize==3||unknown||!certain) { | |
33 | 978 if((!unknown)&&opsize==2&&(offs<-128||offs>=128) ) { |
979 error|=16; makelonger(glineno); | |
980 } | |
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diff
changeset
|
981 offs--; |
111e5defb8ab
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Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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11
diff
changeset
|
982 opsize=3; |
111e5defb8ab
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diff
changeset
|
983 postbyte++; |
0 | 984 } |
985 putbyte(postbyte); | |
986 if (debug) fprintf(stderr,"DEBUG: doaddress: mode=%d, opsize=%d, error=%d, postbyte=%02X, operand=%04X offs=%d\n",mode,opsize,error,postbyte,operand,offs); | |
987 if(opsize==3)putword(offs); | |
988 else putbyte(offs); | |
989 } | |
990 } | |
991 | |
992 void | |
993 onebyte(int co) | |
994 { | |
995 putbyte(co); | |
996 } | |
997 | |
998 void | |
999 twobyte(int co) | |
1000 { | |
1001 putword(co); | |
1002 } | |
1003 | |
1004 void | |
1005 oneimm(int co) | |
1006 { | |
1007 scanoperands(); | |
5 | 1008 if(mode>=3) |
1009 error|=2; | |
0 | 1010 putbyte(co); |
1011 putbyte(operand); | |
1012 } | |
1013 | |
1014 void | |
1015 lea(int co) | |
1016 { | |
1017 putbyte(co); | |
1018 scanoperands(); | |
1019 if(mode==0) error|=2; | |
1020 if(mode<3) { | |
1021 opsize=3; | |
1022 postbyte=0x8f; | |
1023 mode=3; | |
1024 } | |
1025 if (debug) fprintf(stderr,"DEBUG: lea: mode=%d, opsize=%d, error=%d, postbyte=%02X, *src=%c\n",mode,opsize,error,postbyte,*srcptr); | |
1026 doaddress(); | |
1027 } | |
1028 | |
1029 void | |
1030 sbranch(int co) | |
1031 { | |
1032 int offs; | |
1033 scanoperands(); | |
1034 if(mode!=1&&mode!=2)error|=2; | |
1035 offs=(unsigned short)operand-loccounter-2; | |
33 | 1036 if(!unknown&&(offs<-128||offs>=128)) { |
1037 error|=16;makelonger(glineno); | |
1038 if (co==0x20) { | |
1039 if(mode!=1&&mode!=2)error|=2; | |
1040 putbyte(0x16); | |
1041 putword(operand-loccounter-3); | |
1042 } else { | |
1043 if(mode!=1&&mode!=2)error|=2; | |
1044 putbyte(0x10); | |
1045 putbyte(co); | |
1046 putword(operand-loccounter-4); | |
1047 } | |
1048 return; | |
1049 } | |
0 | 1050 if(pass==2&&unknown)error|=4; |
1051 putbyte(co); | |
1052 putbyte(offs); | |
1053 } | |
1054 | |
1055 void | |
1056 lbra(int co) | |
1057 { | |
1058 scanoperands(); | |
1059 if(mode!=1&&mode!=2)error|=2; | |
1060 putbyte(co); | |
1061 putword(operand-loccounter-3); | |
1062 } | |
1063 | |
1064 void | |
1065 lbranch(int co) | |
1066 { | |
1067 scanoperands(); | |
1068 if(mode!=1&&mode!=2)error|=2; | |
1069 putword(co); | |
1070 putword(operand-loccounter-4); | |
1071 } | |
1072 | |
1073 void | |
1074 arith(int co) | |
1075 { | |
1076 scanoperands(); | |
1077 switch(mode) { | |
1078 case 0:opsize=2;putbyte(co);break; | |
1079 case 1:putbyte(co+0x010);break; | |
1080 case 2:putbyte(co+0x030);break; | |
1081 default:putbyte(co+0x020); | |
1082 } | |
1083 doaddress(); | |
1084 } | |
1085 | |
1086 void | |
1087 darith(int co) | |
1088 { | |
1089 scanoperands(); | |
1090 switch(mode) { | |
1091 case 0:opsize=3;putbyte(co);break; | |
1092 case 1:putbyte(co+0x010);break; | |
1093 case 2:putbyte(co+0x030);break; | |
1094 default:putbyte(co+0x020); | |
1095 } | |
1096 doaddress(); | |
1097 } | |
1098 | |
1099 void | |
1100 d2arith(int co) | |
1101 { | |
1102 scanoperands(); | |
1103 switch(mode) { | |
1104 case 0:opsize=3;putword(co);break; | |
1105 case 1:putword(co+0x010);break; | |
1106 case 2:putword(co+0x030);break; | |
1107 default:putword(co+0x020); | |
1108 } | |
1109 doaddress(); | |
1110 } | |
1111 | |
1112 void | |
1113 oneaddr(int co) | |
1114 { | |
1115 scanoperands(); | |
1116 switch(mode) { | |
1117 case 0: error|=2;break; | |
1118 case 1: putbyte(co);break; | |
1119 case 2: putbyte(co+0x70);break; | |
1120 default: putbyte(co+0x60);break; | |
1121 } | |
1122 doaddress(); | |
1123 } | |
1124 | |
1125 void | |
1126 tfrexg(int co) | |
1127 { | |
1128 struct regrecord * p; | |
1129 putbyte(co); | |
1130 skipspace(); | |
1131 scanname(); | |
1132 if((p=findreg(namebuf))==0)error|=2; | |
1133 else postbyte=(p->tfr)<<4; | |
1134 skipspace(); | |
1135 if(*srcptr==',')srcptr++;else error|=2; | |
1136 skipspace(); | |
1137 scanname(); | |
1138 if((p=findreg(namebuf))==0)error|=2; | |
1139 else postbyte|=p->tfr; | |
1140 putbyte(postbyte); | |
1141 } | |
1142 | |
1143 void | |
1144 pshpul(int co) | |
1145 { | |
1146 struct regrecord *p; | |
1147 putbyte(co); | |
1148 postbyte=0; | |
1149 do { | |
1150 if(*srcptr==',')srcptr++; | |
1151 skipspace(); | |
1152 scanname(); | |
1153 if((p=findreg(namebuf))==0)error|=2; | |
1154 else postbyte|=p->psh; | |
1155 skipspace(); | |
1156 }while (*srcptr==','); | |
1157 putbyte(postbyte); | |
1158 } | |
1159 | |
1160 void | |
1161 skipComma() | |
1162 { | |
1163 while(*srcptr && *srcptr!='\n' && *srcptr!=',')srcptr++; | |
1164 if (*srcptr==',') { | |
1165 srcptr++; | |
1166 } else { | |
1167 error|=1; | |
1168 } | |
1169 } | |
1170 | |
1171 void os9begin() | |
1172 { | |
6 | 1173 generate(); |
3 | 1174 os9=1; // contiguous code generation ( i.e. ignore org nor rmb ) |
34 | 1175 oldlc = loccounter = rmbcounter = rmbmode = 0; |
0 | 1176 reset_crc(); |
1177 putword(0x87cd); | |
1178 putword(scanexpr(0)-loccounter); // module size | |
1179 skipComma(); | |
1180 putword(scanexpr(0)-loccounter); // offset to module name | |
1181 skipComma(); | |
1182 putbyte(scanexpr(0)); // type / language | |
1183 skipComma(); | |
1184 putbyte(scanexpr(0)); // attribute | |
1185 int parity=0; | |
1186 for(int i=0; i< 8; i++) parity^=codebuf[i]; | |
1187 putbyte(parity^0xff); // header parity | |
1188 skipspace(); | |
1189 while (*srcptr==',') { // there are some more | |
1190 srcptr++; | |
1191 putword(scanexpr(0)); | |
1192 skipspace(); | |
1193 } | |
34 | 1194 prevloc = codeptr; |
1195 rmbmode = 1; // next org works on rmb | |
1196 loccounter = 0x10000-codeptr; // should start at 0 | |
0 | 1197 } |
1198 | |
1199 void os9end() | |
1200 { | |
1201 crc = crc ^ 0xffffff; | |
1202 | |
1203 putbyte((crc>>16)&0xff); | |
1204 putbyte((crc>>8)&0xff); | |
1205 putbyte(crc&0xff); | |
1206 } | |
1207 | |
1208 | |
1209 void | |
1210 pseudoop(int co,struct symrecord * lp) | |
1211 { | |
1212 int i; | |
1213 char c; | |
1214 char *fname; | |
1215 int locsave; | |
1216 | |
1217 switch(co) { | |
1218 case 0:/* RMB */ | |
3 | 1219 // in OS9 mode, this generates no data |
1220 // loccounter will be reset after any code to the current code generation | |
34 | 1221 if (os9 && !rmbmode) { |
1222 prevloc = loccounter; | |
1223 oldlc = loccounter = rmbcounter; | |
1224 rmbmode = 1; | |
33 | 1225 } |
0 | 1226 setlabel(lp); |
1227 operand=scanexpr(0); | |
1228 if(unknown)error|=4; | |
1229 loccounter+=operand; | |
1230 if(generating&&pass==2) { | |
6 | 1231 if(!outmode && !os9 ) { |
1232 for(i=0;i<operand;i++) { fputc(0,objfile); } | |
1233 } else | |
1234 flushhex(); | |
0 | 1235 } |
1236 hexaddr=loccounter; | |
1237 break; | |
1238 case 5:/* EQU */ | |
1239 operand=scanexpr(0); | |
1240 if(!lp)error|=32; | |
1241 else { | |
1242 if(lp->cat==13||lp->cat==6|| | |
1243 (lp->value==(unsigned short)operand&&pass==2)) { | |
1244 if(exprcat==2)lp->cat=2; | |
1245 else lp->cat=0; | |
1246 lp->value=operand; | |
33 | 1247 } // else error|=8; |
0 | 1248 } |
1249 break; | |
1250 case 7:/* FCB */ | |
6 | 1251 generate(); |
0 | 1252 setlabel(lp); |
1253 do { | |
1254 if(*srcptr==',')srcptr++; | |
1255 skipspace(); | |
1256 if(*srcptr=='\"') { | |
1257 srcptr++; | |
1258 while(*srcptr!='\"'&&*srcptr) | |
1259 putbyte(*srcptr++); | |
1260 if(*srcptr=='\"')srcptr++; | |
1261 } else { | |
1262 putbyte(scanexpr(0)); | |
1263 if(unknown&&pass==2)error|=4; | |
1264 } | |
1265 skipspace(); | |
1266 } while(*srcptr==','); | |
1267 break; | |
1268 case 8:/* FCC */ | |
6 | 1269 generate(); |
0 | 1270 setlabel(lp); |
1271 skipspace(); | |
1272 c=*srcptr++; | |
1273 while(*srcptr!=c&&*srcptr) | |
1274 putbyte(*srcptr++); | |
1275 if(*srcptr==c)srcptr++; | |
1276 break; | |
1277 case 9:/* FDB */ | |
6 | 1278 generate(); |
0 | 1279 setlabel(lp); |
1280 do { | |
1281 if(*srcptr==',')srcptr++; | |
1282 skipspace(); | |
1283 putword(scanexpr(0)); | |
1284 if(unknown&&pass==2)error|=4; | |
1285 skipspace(); | |
1286 } while(*srcptr==','); | |
1287 break; | |
1288 case 23 :/* FCS */ | |
6 | 1289 generate(); |
0 | 1290 setlabel(lp); |
1291 skipspace(); | |
1292 int sep = *srcptr; | |
35 | 1293 if(sep=='\"' || sep=='/' || sep=='\'') { |
0 | 1294 srcptr++; |
1295 while(*srcptr!=sep&&*srcptr) | |
1296 putbyte(*srcptr++); | |
1297 if(*srcptr==sep)srcptr++; | |
1298 codebuf[codeptr-1] |= 0x80; // os9 string termination | |
1299 } | |
1300 break; | |
1301 case 1: /* ELSE */ | |
1302 suppress=1; | |
1303 break; | |
1304 case 21: /* IFP1 */ | |
1305 if(pass==2)suppress=2; | |
1306 break; | |
1307 case 29: /* IFGT */ | |
1308 operand=scanexpr(0); | |
33 | 1309 if(operand<=0)suppress=2; |
0 | 1310 break; |
1311 case 31: /* IFLT */ | |
1312 operand=scanexpr(0); | |
33 | 1313 if(operand>=0)suppress=2; |
0 | 1314 break; |
3 | 1315 case 30: /* IFEQ */ |
0 | 1316 operand=scanexpr(0); |
33 | 1317 if(operand!=0)suppress=2; |
0 | 1318 break; |
3 | 1319 case 28: /* IFNE */ |
0 | 1320 case 10: /* IF */ |
1321 operand=scanexpr(0); | |
33 | 1322 if(operand==0)suppress=2; |
1323 break; | |
1324 case 33: /* IFNDEF */ | |
1325 operand=scanexpr(0); | |
1326 if(!unknown)suppress=2; | |
0 | 1327 break; |
1328 case 12: /* ORG */ | |
1329 operand=scanexpr(0); | |
1330 if(unknown)error|=4; | |
3 | 1331 if(generating&&pass==2&&!outmode&&!os9) { |
0 | 1332 for(i=0;i<(unsigned short)operand-loccounter;i++) |
3 | 1333 fputc(0,objfile); |
1334 } else flushhex(); | |
0 | 1335 loccounter=operand; |
1336 hexaddr=loccounter; | |
1337 break; | |
1338 case 14: /* SETDP */ | |
1339 operand=scanexpr(0); | |
1340 if(unknown)error|=4; | |
1341 if(!(operand&255))operand=(unsigned short)operand>>8; | |
1342 if((unsigned)operand>255)operand=-1; | |
1343 dpsetting=operand; | |
1344 break; | |
1345 case 15: /* SET */ | |
1346 operand=scanexpr(0); | |
1347 if(!lp)error|=32; | |
1348 else { | |
1349 if(lp->cat&1||lp->cat==6) { | |
1350 if(exprcat==2)lp->cat=3; | |
1351 else lp->cat=1; | |
1352 lp->value=operand; | |
33 | 1353 } // else error|=8; |
0 | 1354 } |
1355 break; | |
1356 case 2: /* END */ | |
1357 terminate=1; | |
1358 break; | |
1359 case 27: /* USE */ | |
6 | 1360 // locsave = loccounter ; |
0 | 1361 case 16: /* INCLUDE */ |
1362 skipspace(); | |
1363 if(*srcptr=='"')srcptr++; | |
1364 i = 0; | |
1365 for(i=0; !(srcptr[i]==0||srcptr[i]=='"'); i++); | |
1366 int len = i; | |
1367 fname = calloc(1,len); | |
1368 for(i=0;i<len;i++) { | |
1369 if(*srcptr==0||*srcptr=='"')break; | |
1370 fname[i]=*srcptr++; | |
1371 } | |
1372 fname[i]=0; | |
1373 processfile(fname); | |
1374 codeptr=0; | |
1375 srcline[0]=0; | |
3 | 1376 // if (co==27) loccounter = locsave; |
0 | 1377 break; |
1378 case 24: /* MOD */ | |
6 | 1379 oldlc = loccounter = 0; |
0 | 1380 setlabel(lp); |
1381 os9begin(); | |
1382 break; | |
1383 case 25: /* EMOD */ | |
1384 os9end(); | |
1385 break; | |
1386 case 32: /* OS9 */ | |
6 | 1387 generate(); |
0 | 1388 setlabel(lp); |
3 | 1389 putword(0x103f); // SWI2 |
0 | 1390 putbyte(scanexpr(0)); |
15 | 1391 if(unknown&&pass==2)error|=4; |
0 | 1392 break; |
1393 case 18: /* TTL */ | |
1394 break; | |
1395 case 19: /* OPT */ | |
1396 case 26: /* NAM */ | |
1397 case 20: /* PAG */ | |
1398 case 3: /* ENDIF/ENDC */ | |
1399 break; | |
1400 } | |
1401 } | |
1402 | |
1403 | |
1404 void | |
1405 processline() | |
1406 { | |
1407 struct symrecord * lp; | |
1408 struct oprecord * op; | |
1409 int co; | |
1410 char c; | |
1411 srcptr=srcline; | |
1412 oldlc=loccounter; | |
5 | 1413 // error=0; |
0 | 1414 unknown=0;certain=1; |
1415 lp=0; | |
1416 codeptr=0; | |
1417 if(isalnum(*srcptr)) { | |
1418 scanname();lp=findsym(namebuf); | |
1419 if(*srcptr==':') srcptr++; | |
26 | 1420 if(lp && pass==2) { |
1421 oldlc = lp->value; | |
1422 } | |
0 | 1423 } |
1424 skipspace(); | |
1425 if(isalnum(*srcptr)) { | |
1426 scanname(); | |
1427 op=findop(namebuf); | |
1428 if(op) { | |
1429 if(op->cat!=13){ | |
6 | 1430 generate(); |
0 | 1431 setlabel(lp); |
1432 } | |
1433 co=op->code; | |
1434 switch(op->cat) { | |
1435 case 0:onebyte(co);break; | |
1436 case 1:twobyte(co);break; | |
1437 case 2:oneimm(co);break; | |
1438 case 3:lea(co);break; | |
1439 case 4:sbranch(co);break; | |
1440 case 5:lbranch(co);break; | |
1441 case 6:lbra(co);break; | |
1442 case 7:arith(co);break; | |
1443 case 8:darith(co);break; | |
1444 case 9:d2arith(co);break; | |
1445 case 10:oneaddr(co);break; | |
1446 case 11:tfrexg(co);break; | |
1447 case 12:pshpul(co);break; | |
1448 case 13:pseudoop(co,lp); | |
1449 } | |
1450 c=*srcptr; | |
1451 if (debug) fprintf(stderr,"DEBUG: processline: mode=%d, opsize=%d, error=%d, postbyte=%02X c=%c\n",mode,opsize,error,postbyte,c); | |
1452 if(c!=' '&&*(srcptr-1)!=' '&&c!=0&&c!=';')error|=2; | |
1453 } | |
1454 else error|=0x8000; | |
26 | 1455 } else { |
33 | 1456 if (lp) { |
1457 lp->next = prevlp; | |
1458 prevlp = lp; // os9 mode label can be data or code | |
1459 } | |
26 | 1460 } |
0 | 1461 if(pass==2) { |
1462 outbuffer(); | |
1463 if(listing)outlist(); | |
1464 } | |
1465 if(error)report(); | |
1466 loccounter+=codeptr; | |
1467 } | |
1468 | |
1469 void | |
1470 suppressline() | |
1471 { | |
1472 struct oprecord * op; | |
1473 srcptr=srcline; | |
1474 oldlc=loccounter; | |
1475 codeptr=0; | |
1476 if(isalnum(*srcptr)) { | |
1477 scanname(); | |
1478 if(*srcptr==':')srcptr++; | |
1479 } | |
1480 skipspace(); | |
1481 scanname();op=findop(namebuf); | |
1482 if(op && op->cat==13) { | |
33 | 1483 if(op->code==10||op->code==13||op->code==29||op->code==28||op->code==21||op->code==30||op->code==31||op->code==33) ifcount++; |
0 | 1484 else if(op->code==3) { |
1485 if(ifcount>0)ifcount--;else if(suppress==1|suppress==2)suppress=0; | |
1486 } else if(op->code==1) { | |
1487 if(ifcount==0 && suppress==2)suppress=0; | |
1488 } | |
1489 } | |
6 | 1490 if(pass==2&&listing)outlist(); } |
0 | 1491 |
1492 void | |
1493 usage(char*nm) | |
1494 { | |
1495 fprintf(stderr,"Usage: %s [-o objname] [-l listname] [-s srecord-file] srcname\n",nm); | |
1496 exit(2); | |
1497 } | |
1498 | |
1499 char * | |
1500 strconcat(char *s,int spos,char *d) | |
1501 { | |
1502 int slen = strlen(s); | |
1503 int dlen = strlen(d); | |
1504 if ( spos == 0) spos = slen; | |
1505 char *out = calloc(1,spos+dlen+1); | |
1506 int i = 0; | |
1507 for(; i< spos; i++ ) out[i] = s[i]; | |
1508 for(; i< spos+dlen+1; i++ ) out[i] = *d++; | |
1509 return out; | |
1510 } | |
1511 | |
1512 | |
1513 void | |
1514 getoptions(int c,char*v[]) | |
1515 { | |
6 | 1516 int i=1; |
0 | 1517 if(c==1)usage(v[0]); |
6 | 1518 while(v[i]) { |
1519 if(strcmp(v[i],"-d")==0) { | |
1520 debug=1; | |
1521 i++; | |
1522 } else if(strcmp(v[i],"-o")==0) { | |
1523 objname = v[i+1]; | |
1524 i+=2; | |
1525 } else if(strcmp(v[i],"-s")==0) { | |
1526 objname=v[i+1]; | |
1527 outmode=1; | |
1528 i+=2; | |
1529 } else if(strcmp(v[i],"-l")==0) { | |
1530 listname=v[i+1]; | |
1531 i+=2; | |
33 | 1532 } else if(strcmp(v[i],"-I")==0) { |
1533 struct incl *j = (struct incl *)malloc(sizeof(struct incl)); | |
1534 j->name = v[i+1]; | |
1535 j->next = 0; | |
1536 if (!incls) incls = j; | |
1537 else { | |
1538 struct incl *k=incls ; | |
1539 for(; k->next ; k = k->next ) ; | |
1540 k->next = j; | |
1541 } | |
1542 i+=2; | |
6 | 1543 } else if(*v[i]=='-') { |
1544 usage(v[0]); | |
1545 } else { | |
1546 if (srcname) usage(v[0]); | |
1547 srcname=v[i]; | |
1548 i++; | |
1549 } | |
0 | 1550 } |
1551 if(objname==0) { | |
1552 for(i=0;srcname[i]!='.' && srcname[i]!=0 ;i++) ; | |
1553 objname = strconcat(srcname,i,".b"); | |
1554 } | |
1555 listing=(listname!=0); | |
1556 } | |
1557 | |
1558 void | |
1559 expandline() | |
1560 { | |
1561 int i=0,j=0,k,j1; | |
1562 for(i=0;i<128&&j<128;i++) | |
1563 { | |
1564 if(inpline[i]=='\n') { | |
1565 srcline[j]=0;break; | |
1566 } | |
1567 if(inpline[i]=='\t') { | |
1568 j1=j; | |
1569 for(k=0;k<8-j1%8 && j<128;k++)srcline[j++]=' '; | |
1570 }else srcline[j++]=inpline[i]; | |
1571 } | |
1572 srcline[127]=0; | |
1573 } | |
1574 | |
1575 | |
1576 void | |
1577 processfile(char *name) | |
1578 { | |
1579 char *oldname; | |
1580 int oldno; | |
1581 FILE *srcfile; | |
1582 oldname=curname; | |
1583 curname=name; | |
1584 oldno=lineno; | |
1585 lineno=0; | |
1586 if((srcfile=fopen(name,"r"))==0) { | |
6 | 1587 int i = 0; |
1588 if (oldname) { | |
1589 i = strlen(oldname); | |
1590 while(i>0 && oldname[i]!='/') i--; | |
1591 } | |
0 | 1592 if (i>0) { |
1593 char *next = strconcat(oldname,i+1,name); | |
33 | 1594 if((srcfile=fopen(next,"r"))!=0) { |
1595 curname = next; | |
0 | 1596 } |
33 | 1597 } |
1598 if (!srcfile) { | |
1599 for( struct incl *d = incls; d ; d = d->next) { | |
1600 char *next = strconcat(d->name,0,name); | |
1601 if((srcfile=fopen(next,"r"))!=0) { | |
1602 curname = next; | |
1603 break; | |
1604 } | |
1605 } | |
1606 } | |
1607 } | |
1608 if (!srcfile) { | |
0 | 1609 fprintf(stderr,"Cannot open source file %s\n",name); |
1610 exit(4); | |
1611 } | |
1612 while(!terminate&&fgets(inpline,128,srcfile)) { | |
1613 expandline(); | |
33 | 1614 lineno++; glineno++; |
0 | 1615 srcptr=srcline; |
1616 if(suppress)suppressline(); else processline(); | |
1617 } | |
26 | 1618 setlabel(0); // process prevlp |
0 | 1619 fclose(srcfile); |
1620 if(suppress) { | |
1621 fprintf(stderr,"improperly nested IF statements in %s",curname); | |
1622 errors++; | |
1623 suppress=0; | |
1624 } | |
1625 lineno=oldno; | |
1626 curname=oldname; | |
1627 } | |
1628 | |
1629 int | |
1630 main(int argc,char *argv[]) | |
1631 { | |
1632 char c; | |
1633 getoptions(argc,argv); | |
1634 pass=1; | |
1635 errors=0; | |
1636 generating=0; | |
1637 terminate=0; | |
1638 processfile(srcname); | |
1639 if(errors) { | |
1640 fprintf(stderr,"%d Pass 1 Errors, Continue?",errors); | |
1641 c=getchar(); | |
1642 if(c=='n'||c=='N') exit(3); | |
1643 } | |
33 | 1644 do { |
0 | 1645 pass=2; |
6 | 1646 prevloc = 0; |
0 | 1647 loccounter=0; |
1648 errors=0; | |
1649 generating=0; | |
1650 terminate=0; | |
33 | 1651 glineno=0; |
0 | 1652 if(listing&&((listfile=fopen(listname,"w"))==0)) { |
1653 fprintf(stderr,"Cannot open list file"); | |
1654 exit(4); | |
1655 } | |
1656 if((objfile=fopen(objname,outmode?"w":"wb"))==0) { | |
1657 fprintf(stderr,"Cannot write object file\n"); | |
1658 exit(4); | |
1659 } | |
1660 processfile(srcname); | |
33 | 1661 } while (longer()); |
0 | 1662 fprintf(stderr,"%d Pass 2 errors.\n",errors); |
1663 if(listing) { | |
1664 fprintf(listfile,"%d Pass 2 errors.\n",errors); | |
1665 outsymtable(); | |
1666 fclose(listfile); | |
1667 } | |
1668 if(outmode){ | |
1669 flushhex(); | |
1670 fprintf(objfile,"S9030000FC\n"); | |
1671 } | |
1672 fclose(objfile); | |
1673 return 0; | |
1674 } | |
1675 |