Mercurial > hg > Members > kono > os9 > sbc09
annotate a09.c @ 55:8d151f303bee
FIRQ does not worked
author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
---|---|
date | Mon, 23 Jul 2018 08:35:25 +0900 |
parents | 51b437557f42 |
children |
rev | line source |
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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 | |
0 | 74 |
75 struct oprecord{char * name; | |
76 unsigned char cat; | |
77 unsigned short code;}; | |
78 | |
79 /* Instruction categories: | |
80 0 one byte oprcodes NOP | |
81 1 two byte opcodes SWI2 | |
82 2 opcodes w. imm byte ANDCC | |
83 3 LEAX etc. | |
84 4 short branches. BGE | |
85 5 long branches 2byte opc LBGE | |
86 6 long branches 1byte opc LBRA | |
87 7 accumulator instr. ADDA | |
88 8 double reg instr 1byte opc LDX | |
89 9 double reg instr 2 byte opc LDY | |
90 10 single address instrs NEG | |
91 11 TFR, EXG | |
92 12 push,pull | |
93 13 pseudoops | |
94 */ | |
95 | |
96 struct oprecord optable[]={ | |
97 {"ABX",0,0x3a},{"ADCA",7,0x89},{"ADCB",7,0xc9}, | |
98 {"ADDA",7,0x8b},{"ADDB",7,0xcb},{"ADDD",8,0xc3}, | |
99 {"ANDA",7,0X84},{"ANDB",7,0xc4},{"ANDCC",2,0x1c}, | |
100 {"ASL",10,0x08},{"ASLA",0,0x48},{"ASLB",0,0x58}, | |
101 {"ASR",10,0x07},{"ASRA",0,0x47},{"ASRB",0,0x57}, | |
102 {"BCC",4,0x24},{"BCS",4,0x25},{"BEQ",4,0x27}, | |
103 {"BGE",4,0x2c},{"BGT",4,0x2e},{"BHI",4,0x22}, | |
104 {"BHS",4,0x24},{"BITA",7,0x85},{"BITB",7,0xc5}, | |
105 {"BLE",4,0x2f},{"BLO",4,0x25},{"BLS",4,0x23}, | |
106 {"BLT",4,0x2d},{"BMI",4,0x2b},{"BNE",4,0x26}, | |
107 {"BPL",4,0x2a},{"BRA",4,0x20},{"BRN",4,0x21}, | |
108 {"BSR",4,0x8d}, | |
109 {"BVC",4,0x28},{"BVS",4,0x29}, | |
110 {"CLC",1,0x1cfe},{"CLF",1,0x1cbf},{"CLI",1,0x1cef}, | |
111 {"CLIF",1,0x1caf}, | |
112 {"CLR",10,0x0f},{"CLRA",0,0x4f},{"CLRB",0,0x5f}, | |
113 {"CLV",1,0x1cfd}, | |
114 {"CMPA",7,0x81},{"CMPB",7,0xc1},{"CMPD",9,0x1083}, | |
115 {"CMPS",9,0x118c},{"CMPU",9,0x1183},{"CMPX",8,0x8c}, | |
116 {"CMPY",9,0x108c}, | |
117 {"COM",10,0x03},{"COMA",0,0x43},{"COMB",0,0x53}, | |
118 {"CWAI",2,0x3c},{"DAA",0,0x19}, | |
119 {"DEC",10,0x0a},{"DECA",0,0x4a},{"DECB",0,0x5a}, | |
120 {"DES",1,0x327f},{"DEU",1,0x335f},{"DEX",1,0x301f}, | |
121 {"DEY",1,0x313f}, | |
122 {"ELSE",13,1}, | |
123 {"EMOD",13,25}, | |
124 {"END",13,2}, | |
125 {"ENDC",13,3}, | |
126 {"ENDIF",13,3}, | |
127 {"ENDM",13,4}, | |
128 {"EORA",7,0x88},{"EORB",7,0xc8}, | |
129 {"EQU",13,5},{"EXG",11,0x1e},{"EXTERN",13,6}, | |
130 {"FCB",13,7},{"FCC",13,8}, | |
131 {"FCS",13,23}, | |
132 {"FCW",13,9}, | |
133 {"FDB",13,9}, | |
134 {"IF",13,10}, | |
33 | 135 {"IFEQ",13,30}, |
136 {"IFGT",13,29}, | |
137 {"IFNDEF",13,33}, | |
0 | 138 {"IFNE",13,28}, |
139 {"IFP1",13,21}, | |
140 {"INC",10,0x0c},{"INCA",0,0x4c},{"INCB",0,0x5c}, | |
141 {"INCLUDE",13,16}, | |
142 {"INS",1,0x3261},{"INU",1,0x3341},{"INX",1,0x3001}, | |
143 {"INY",1,0x3121},{"JMP",10,0x0e},{"JSR",8,0x8d}, | |
144 {"LBCC",5,0x1024},{"LBCS",5,0x1025},{"LBEQ",5,0x1027}, | |
145 {"LBGE",5,0x102c},{"LBGT",5,0x102e},{"LBHI",5,0x1022}, | |
146 {"LBHS",5,0x1024}, | |
147 {"LBLE",5,0x102f},{"LBLO",5,0x1025},{"LBLS",5,0x1023}, | |
148 {"LBLT",5,0x102d},{"LBMI",5,0x102b},{"LBNE",5,0x1026}, | |
149 {"LBPL",5,0x102a},{"LBRA",6,0x16},{"LBRN",5,0x1021}, | |
150 {"LBSR",6,0x17}, | |
151 {"LBVC",5,0x1028},{"LBVS",5,0x1029}, | |
152 {"LDA",7,0x86},{"LDB",7,0xc6},{"LDD",8,0xcc}, | |
153 {"LDS",9,0x10ce},{"LDU",8,0xce},{"LDX",8,0x8e}, | |
154 {"LDY",9,0x108e},{"LEAS",3,0x32}, | |
155 {"LEAU",3,0x33},{"LEAX",3,0x30},{"LEAY",3,0x31}, | |
156 {"LSL",10,0x08},{"LSLA",0,0x48},{"LSLB",0,0x58}, | |
157 {"LSR",10,0x04},{"LSRA",0,0x44},{"LSRB",0,0x54}, | |
158 {"MACRO",13,11}, | |
159 {"MOD",13,24}, | |
160 {"MUL",0,0x3d}, | |
161 {"NAM",13,26}, | |
162 {"NEG",10,0x00},{"NEGA",0,0x40},{"NEGB",0,0x50}, | |
163 {"NOP",0,0x12}, | |
164 {"OPT",13,19}, | |
165 {"ORA",7,0x8a},{"ORB",7,0xca},{"ORCC",2,0x1a}, | |
166 {"ORG",13,12}, | |
167 {"OS9",13,32}, | |
168 {"PAG",13,20}, {"PAGE",13,20}, | |
169 {"PSHS",12,0x34},{"PSHU",12,0x36},{"PUBLIC",13,13}, | |
170 {"PULS",12,0x35},{"PULU",12,0x37},{"RMB",13,0}, | |
171 {"ROL",10,0x09},{"ROLA",0,0x49},{"ROLB",0,0x59}, | |
172 {"ROR",10,0x06},{"RORA",0,0x46},{"RORB",0,0x56}, | |
173 {"RTI",0,0x3b},{"RTS",0,0x39}, | |
174 {"SBCA",7,0x82},{"SBCB",7,0xc2}, | |
175 {"SEC",1,0x1a01},{"SEF",1,0x1a40},{"SEI",1,0x1a10}, | |
176 {"SEIF",1,0x1a50},{"SET",13,15}, | |
177 {"SETDP",13,14},{"SEV",1,0x1a02},{"SEX",0,0x1d}, | |
178 {"STA",7,0x87},{"STB",7,0xc7},{"STD",8,0xcd}, | |
179 {"STS",9,0x10cf},{"STU",8,0xcf},{"STX",8,0x8f}, | |
180 {"STY",9,0x108f}, | |
181 {"SUBA",7,0x80},{"SUBB",7,0xc0},{"SUBD",8,0x83}, | |
182 {"SWI",0,0x3f},{"SWI2",1,0x103f},{"SWI3",1,0x113f}, | |
183 {"SYNC",0,0x13},{"TFR",11,0x1f}, | |
184 {"TITLE",13,18}, | |
185 {"TST",10,0x0d},{"TSTA",0,0x4d},{"TSTB",0,0x5d}, | |
186 {"TTL",13,18}, | |
187 {"USE",13,27}, | |
188 }; | |
189 | |
190 struct symrecord{char name[MAXIDLEN+1]; | |
191 char cat; | |
192 unsigned short value; | |
33 | 193 struct symrecord *next; |
0 | 194 }; |
195 | |
196 int symcounter=0; | |
34 | 197 int os9 = 0; // os9 flag |
198 int rmbmode = 0; // in os9 work area | |
26 | 199 struct symrecord * prevlp = 0; |
0 | 200 |
8 | 201 /* expression categories... |
202 ECORD all zeros is ordinary constant. | |
203 ECADR bit 1 indicates address within module. | |
204 ECEXT bit 2 indicates external address. | |
205 ECLBL bit 3 public label | |
206 ECABS bit 4 indicates this can't be relocated if it's an address. | |
207 ECNEG bit 5 indicates address (if any) is negative. | |
208 */ | |
209 | |
210 | |
211 /* Symbol categories. exprcat ( symcat & 0xe ) | |
212 0 SCC Constant value (from equ). ECORD | |
213 1 SCV Variable value (from set) ECORD | |
214 2 SCC__ADR Address within program module (label). ECADR | |
215 3 SCV__ADR Variable containing address. ECADR | |
216 4 SC_E_ADR Adress in other program module (extern) ECEXT | |
217 5 SCVE_ADR Variable containing external address. ECEXT | |
218 6 SCU _ADR Unresolved address. ECEXT+ECADR | |
219 7 SCV_UADR Variable containing unresolved address. ECEXT+ECADR | |
220 8 SC___LBL Public label. ECLBL | |
221 9 SCMACRO Macro definition. xxx | |
222 10 SCU__LBL Public label (yet undefined). ECADR+ECLBL | |
223 11 SCPARAM parameter name. ECADR+ECLBL | |
224 12 SCLOCAL local label. ECEXT+ECLBL | |
225 13 SCEMPTY empty. xxx | |
0 | 226 */ |
227 | |
228 struct symrecord symtable[NLABELS]; | |
229 | |
230 void processfile(char *name); | |
231 | |
232 struct oprecord * findop(char * nm) | |
233 /* Find operation (mnemonic) in table using binary search */ | |
234 { | |
235 int lo,hi,i,s; | |
236 lo=0;hi=sizeof(optable)/sizeof(optable[0])-1; | |
237 do { | |
238 i=(lo+hi)/2; | |
239 s=strcmp(optable[i].name,nm); | |
240 if(s<0) lo=i+1; | |
241 else if(s>0) hi=i-1; | |
242 else break; | |
243 } while(hi>=lo); | |
244 if (s) return NULL; | |
245 return optable+i; | |
246 } | |
247 | |
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248 struct symrecord * findsym(char * nm) { |
0 | 249 /* finds symbol table record; inserts if not found |
250 uses binary search, maintains sorted table */ | |
251 int lo,hi,i,j,s; | |
252 lo=0;hi=symcounter-1; | |
253 s=1;i=0; | |
254 while (hi>=lo) { | |
255 i=(lo+hi)/2; | |
256 s=strcmp(symtable[i].name,nm); | |
257 if(s<0) lo=i+1; | |
258 else if(s>0) hi=i-1; | |
259 else break; | |
260 } | |
261 if(s) { | |
262 i=(s<0?i+1:i); | |
263 if(symcounter==NLABELS) { | |
264 fprintf(stderr,"Sorry, no storage for symbols!!!"); | |
265 exit(4); | |
266 } | |
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267 for(j=symcounter;j>i;j--) { |
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268 struct symrecord *from = &symtable[j-1]; |
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269 if (prevlp == from) prevlp++; |
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270 if (from->next && from->next - symtable > i) from->next ++; |
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271 symtable[j]=symtable[j-1]; |
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272 } |
0 | 273 symcounter++; |
274 strcpy(symtable[i].name,nm); | |
275 symtable[i].cat=13; | |
276 } | |
277 return symtable+i; | |
278 } | |
279 | |
280 FILE *listfile,*objfile; | |
281 char *listname,*objname,*srcname,*curname; | |
33 | 282 int lineno,glineno; |
0 | 283 |
284 void | |
285 outsymtable() | |
286 { | |
287 int i,j=0; | |
288 fprintf(listfile,"\nSYMBOL TABLE"); | |
289 for(i=0;i<symcounter;i++) | |
290 if(symtable[i].cat!=13) { | |
291 if(j%4==0)fprintf(listfile,"\n"); | |
292 fprintf(listfile,"%10s %02d %04x",symtable[i].name,symtable[i].cat, | |
293 symtable[i].value); | |
294 j++; | |
295 } | |
296 fprintf(listfile,"\n"); | |
297 } | |
298 | |
299 struct regrecord{char *name;unsigned char tfr,psh;}; | |
300 struct regrecord regtable[]= | |
301 {{"D",0x00,0x06},{"X",0x01,0x10},{"Y",0x02,0x20}, | |
302 {"U",0x03,0x40},{"S",0x04,0x40},{"PC",0x05,0x80}, | |
303 {"A",0x08,0x02},{"B",0x09,0x04},{"CC",0x0a,0x01}, | |
304 {"CCR",0x0a,0x01},{"DP",0x0b,0x08},{"DPR",0x0b,0x08}}; | |
305 | |
306 struct regrecord * findreg(char *nm) | |
307 { | |
308 int i; | |
309 for(i=0;i<12;i++) { | |
310 if(strcmp(regtable[i].name,nm)==0) return regtable+i; | |
311 } | |
312 return 0; | |
313 } | |
314 | |
315 | |
316 char pass; /* Assembler pass=1 or 2 */ | |
317 char listing; /* flag to indicate listing */ | |
318 char relocatable; /* flag to indicate relocatable object. */ | |
319 char terminate; /* flag to indicate termination. */ | |
320 char generating; /* flag to indicate that we generate code */ | |
34 | 321 unsigned short loccounter,oldlc,prevloc,rmbcounter; /* Location counter */ |
0 | 322 |
323 char inpline[128]; /* Current input line (not expanded)*/ | |
324 char srcline[128]; /* Current source line */ | |
325 char * srcptr; /* Pointer to line being parsed */ | |
326 | |
327 char unknown; /* flag to indicate value unknown */ | |
328 char certain; /* flag to indicate value is certain at pass 1*/ | |
329 int error; /* flags indicating errors in current line. */ | |
330 int errors; /* number of errors */ | |
331 char exprcat; /* category of expression being parsed, eg. | |
332 label or constant, this is important when | |
333 generating relocatable object code. */ | |
334 | |
46 | 335 void makelonger(int gl) { |
336 if (pass==1) return; | |
337 for(struct longer *p=lglist;p;p=p->next) { | |
338 if (p->gline==gl) { // already fixed | |
339 p->change = 1; | |
340 return; | |
341 } | |
342 } | |
343 struct longer *p = (struct longer *)calloc(sizeof(struct longer *),1); | |
344 p->gline=gl; | |
345 p->next = lglist; | |
346 lglist = p; | |
347 } | |
348 | |
349 int longer() { | |
350 for(struct longer *p=lglist;p;p=p->next) { | |
351 if (p->change == 0) return 1; | |
352 } | |
353 return 0; | |
354 } | |
6 | 355 void generate() |
356 { | |
357 generating = 1; | |
34 | 358 if (rmbmode) { |
359 rmbcounter = loccounter; | |
360 oldlc = loccounter = prevloc; | |
361 rmbmode = 0; | |
6 | 362 } |
363 } | |
364 | |
0 | 365 |
366 char namebuf[MAXIDLEN+1]; | |
367 | |
368 void | |
369 err(int er) { | |
370 error |= er ; | |
371 } | |
372 | |
373 void | |
374 scanname() | |
375 { | |
376 int i=0; | |
377 char c; | |
378 while(1) { | |
379 c=*srcptr++; | |
380 if(c>='a'&&c<='z')c-=32; | |
33 | 381 if(c!='_'&&c!='@'&&c!='.'&&c!='$'&&(c<'0'||c>'9')&&(c<'A'||c>'Z'))break; |
0 | 382 if(i<MAXIDLEN)namebuf[i++]=c; |
383 } | |
384 namebuf[i]=0; | |
385 srcptr--; | |
386 } | |
387 | |
388 void | |
389 skipspace() | |
390 { | |
391 char c; | |
392 do { | |
393 c=*srcptr++; | |
394 } while(c==' '||c=='\t'); | |
395 srcptr--; | |
396 } | |
397 | |
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398 int scanexpr(int); |
0 | 399 |
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400 int scandecimal() |
0 | 401 { |
402 char c; | |
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403 int t=0; |
0 | 404 c=*srcptr++; |
405 while(isdigit(c)) { | |
406 t=t*10+c-'0'; | |
407 c=*srcptr++; | |
408 } | |
409 srcptr--; | |
410 return t; | |
411 } | |
412 | |
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413 int scanhex() |
0 | 414 { |
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415 int t=0,i=0; |
0 | 416 srcptr++; |
417 scanname(); | |
418 while(namebuf[i]>='0'&&namebuf[i]<='F') { | |
419 t=t*16+namebuf[i]-'0'; | |
420 if(namebuf[i]>'9')t-=7; | |
421 i++; | |
422 } | |
423 if(i==0)error|=1; | |
424 return t; | |
425 } | |
426 | |
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427 int scanchar() |
0 | 428 { |
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429 int t; |
0 | 430 srcptr++; |
431 t=*srcptr; | |
432 if(t)srcptr++; | |
433 if (*srcptr=='\'')srcptr++; | |
434 return t; | |
435 } | |
436 | |
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437 int scanbin() |
0 | 438 { |
439 char c; | |
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440 int t=0; |
0 | 441 srcptr++; |
442 c=*srcptr++; | |
443 while(c=='0'||c=='1') { | |
444 t=t*2+c-'0'; | |
445 c=*srcptr++; | |
446 } | |
447 srcptr--; | |
448 return t; | |
449 } | |
450 | |
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451 int scanoct() |
0 | 452 { |
453 char c; | |
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454 int t=0; |
0 | 455 srcptr++; |
456 c=*srcptr++; | |
457 while(c>='0'&&c<='7') { | |
458 t=t*8+c-'0'; | |
459 c=*srcptr++; | |
460 } | |
461 srcptr--; | |
462 return t; | |
463 } | |
464 | |
465 | |
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466 int scanlabel() |
0 | 467 { |
468 struct symrecord * p; | |
469 scanname(); | |
470 p=findsym(namebuf); | |
471 if(p->cat==13) { | |
472 p->cat=6; | |
473 p->value=0; | |
474 } | |
475 if(p->cat==9||p->cat==11)error|=1; | |
476 exprcat=p->cat&14; | |
477 if(exprcat==6||exprcat==10)unknown=1; | |
478 if(((exprcat==2||exprcat==8) | |
479 && (unsigned short)(p->value)>(unsigned short)loccounter)|| | |
480 exprcat==4) | |
481 certain=0; | |
482 if(exprcat==8||exprcat==6||exprcat==10)exprcat=2; | |
483 return p->value; | |
484 } | |
485 | |
486 | |
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487 int scanfactor() |
0 | 488 { |
489 char c; | |
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490 int t; |
0 | 491 skipspace(); |
492 c=*srcptr; | |
493 if(isalpha(c))return scanlabel(); | |
494 else if(isdigit(c))return scandecimal(); | |
495 else switch(c) { | |
34 | 496 case '*' : srcptr++;exprcat|=2; if(rmbmode) return prevloc; else return loccounter; |
497 case '.' : srcptr++;exprcat|=2; if(os9&&!rmbmode) return rmbcounter; else return loccounter; | |
0 | 498 case '$' : return scanhex(); |
499 case '%' : return scanbin(); | |
500 case '&' : /* compatibility */ | |
501 case '@' : return scanoct(); | |
502 case '\'' : return scanchar(); | |
503 case '(' : srcptr++;t=scanexpr(0);skipspace(); | |
504 if(*srcptr==')')srcptr++;else error|=1; | |
505 return t; | |
506 case '-' : srcptr++;exprcat^=32;return -scanfactor(); | |
507 case '+' : srcptr++;return scanfactor(); | |
508 case '!' : srcptr++;exprcat|=16;return !scanfactor(); | |
509 case '^' : | |
510 case '~' : srcptr++;exprcat|=16;return ~scanfactor(); | |
511 } | |
512 error|=1; | |
513 return 0; | |
514 } | |
515 | |
516 #define EXITEVAL {srcptr--;return t;} | |
517 | |
518 #define RESOLVECAT if((oldcat&15)==0)oldcat=0;\ | |
519 if((exprcat&15)==0)exprcat=0;\ | |
520 if((exprcat==2&&oldcat==34)||(exprcat==34&&oldcat==2)) {\ | |
521 exprcat=0;\ | |
522 oldcat=0;}\ | |
523 exprcat|=oldcat;\ | |
524 /* resolve such cases as constant added to address or difference between | |
525 two addresses in same module */ | |
526 | |
527 | |
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528 int scanexpr(int level) /* This is what you call _recursive_ descent!!!*/ |
0 | 529 { |
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530 int t,u; |
0 | 531 char oldcat,c; |
532 exprcat=0; | |
533 if(level==10)return scanfactor(); | |
534 t=scanexpr(level+1); | |
535 while(1) { | |
5 | 536 // skipspace(); |
0 | 537 c=*srcptr++; |
538 switch(c) { | |
539 case '*':oldcat=exprcat; | |
540 t*=scanexpr(10); | |
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 '%':oldcat=exprcat; | |
549 u=scanexpr(10); | |
550 if(u)t%=u;else error|=1; | |
551 exprcat|=oldcat|16; | |
552 break; | |
553 case '+':if(level==9)EXITEVAL | |
554 oldcat=exprcat; | |
555 t+=scanexpr(9); | |
556 RESOLVECAT | |
557 break; | |
558 case '-':if(level==9)EXITEVAL | |
559 oldcat=exprcat; | |
560 t-=scanexpr(9); | |
561 exprcat^=32; | |
562 RESOLVECAT | |
563 break; | |
564 case '<':if(*(srcptr)=='<') { | |
565 if(level>=8)EXITEVAL | |
566 srcptr++; | |
567 oldcat=exprcat; | |
568 t<<=scanexpr(8); | |
569 exprcat|=oldcat|16; | |
570 break; | |
571 } else if(*(srcptr)=='=') { | |
572 if(level>=7)EXITEVAL | |
573 srcptr++; | |
574 oldcat=exprcat; | |
575 t=t<=scanexpr(7); | |
576 exprcat|=oldcat|16; | |
577 break; | |
578 } else { | |
579 if(level>=7)EXITEVAL | |
580 oldcat=exprcat; | |
581 t=t<scanexpr(7); | |
582 exprcat|=oldcat|16; | |
583 break; | |
584 } | |
585 case '>':if(*(srcptr)=='>') { | |
586 if(level>=8)EXITEVAL | |
587 srcptr++; | |
588 oldcat=exprcat; | |
589 t>>=scanexpr(8); | |
590 exprcat|=oldcat|16; | |
591 break; | |
592 } else if(*(srcptr)=='=') { | |
593 if(level>=7)EXITEVAL | |
594 srcptr++; | |
595 oldcat=exprcat; | |
596 t=t>=scanexpr(7); | |
597 exprcat|=oldcat|16; | |
598 break; | |
599 } else { | |
600 if(level>=7)EXITEVAL | |
601 oldcat=exprcat; | |
602 t=t>scanexpr(7); | |
603 exprcat|=oldcat|16; | |
604 break; | |
605 } | |
5 | 606 case '!':if(level>=6) { |
607 if (*srcptr=='=') { | |
608 srcptr++; | |
609 oldcat=exprcat; | |
610 t=t!=scanexpr(6); | |
611 exprcat|=oldcat|16; | |
612 } else { | |
613 oldcat=exprcat; | |
614 t|=scanexpr(6); | |
615 exprcat|=oldcat|16; | |
616 } | |
617 } | |
0 | 618 break; |
619 case '=':if(level>=6)EXITEVAL | |
620 if(*srcptr=='=')srcptr++; | |
621 oldcat=exprcat; | |
622 t=t==scanexpr(6); | |
623 exprcat|=oldcat|16; | |
624 break; | |
625 case '&':if(level>=5)EXITEVAL | |
626 oldcat=exprcat; | |
627 t&=scanexpr(5); | |
628 exprcat|=oldcat|16; | |
629 break; | |
630 case '^':if(level>=4)EXITEVAL | |
631 oldcat=exprcat; | |
632 t^=scanexpr(4); | |
633 exprcat|=oldcat|16; | |
634 break; | |
635 case '|':if(level>=3)EXITEVAL | |
636 oldcat=exprcat; | |
637 t|=scanexpr(3); | |
638 exprcat|=oldcat|16; | |
639 default: EXITEVAL | |
640 } | |
641 } | |
642 } | |
643 | |
644 char mode; /* addressing mode 0=immediate,1=direct,2=extended,3=postbyte | |
645 4=pcrelative(with postbyte) 5=indirect 6=pcrel&indirect*/ | |
646 char opsize; /*desired operand size 0=dunno,1=5,2=8,3=16*/ | |
647 short operand; | |
648 unsigned char postbyte; | |
649 | |
650 int dpsetting; | |
651 | |
652 | |
653 int scanindexreg() | |
654 { | |
655 char c; | |
656 c=*srcptr; | |
657 if(islower(c))c-=32; | |
658 if (debug) fprintf(stderr,"DEBUG: scanindexreg: indexreg=%d, mode=%d, opsize=%d, error=%d, postbyte=%02X\n",c,mode,opsize,error,postbyte); | |
659 switch(c) { | |
660 case 'X':return 1; | |
661 case 'Y':postbyte|=0x20;return 1; | |
662 case 'U':postbyte|=0x40;return 1; | |
663 case 'S':postbyte|=0x60;return 1; | |
664 default: return 0; | |
665 } | |
666 } | |
667 | |
668 void | |
669 set3() | |
670 { | |
671 if(mode<3)mode=3; | |
672 } | |
673 | |
674 void | |
675 scanspecial() | |
676 { | |
677 set3(); | |
678 skipspace(); | |
679 if(*srcptr=='-') { | |
680 srcptr++; | |
681 if(*srcptr=='-') { | |
682 srcptr++; | |
683 postbyte=0x83; | |
684 } else postbyte=0x82; | |
685 if(!scanindexreg())error|=2;else srcptr++; | |
686 } else { | |
687 postbyte=0x80; | |
688 if(!scanindexreg())error|=2;else srcptr++; | |
689 if(*srcptr=='+') { | |
690 srcptr++; | |
691 if(*srcptr=='+') { | |
692 srcptr++; | |
693 postbyte+=1; | |
694 } | |
695 } else postbyte+=4; | |
696 } | |
697 } | |
698 | |
699 void | |
700 scanindexed() | |
701 { | |
702 set3(); | |
703 postbyte=0; | |
704 if(scanindexreg()) { | |
705 srcptr++; | |
706 if(opsize==0) { | |
707 if(unknown||!certain)opsize=3; | |
708 else if(operand>=-16&&operand<16&&mode==3)opsize=1; | |
709 else if(operand>=-128&&operand<128)opsize=2; | |
710 else opsize=3; | |
711 } | |
712 switch(opsize) { | |
713 case 1:postbyte+=(operand&31);opsize=0;break; | |
714 case 2:postbyte+=0x88;break; | |
715 case 3:postbyte+=0x89;break; | |
716 } | |
717 } else { /*pc relative*/ | |
718 if(toupper(*srcptr)!='P')error|=2; | |
719 else { | |
720 srcptr++; | |
721 if(toupper(*srcptr)!='C')error|=2; | |
722 else { | |
723 srcptr++; | |
724 if(toupper(*srcptr)=='R')srcptr++; | |
725 } | |
726 } | |
727 mode++;postbyte+=0x8c; | |
728 if(opsize==1)opsize=2; | |
729 } | |
730 } | |
731 | |
732 #define RESTORE {srcptr=oldsrcptr;c=*srcptr;goto dodefault;} | |
733 | |
734 void | |
735 scanoperands() | |
736 { | |
737 char c,d,*oldsrcptr; | |
738 unknown=0; | |
739 opsize=0; | |
740 certain=1; | |
741 skipspace(); | |
742 c=*srcptr; | |
743 mode=0; | |
744 if(c=='[') { | |
745 srcptr++; | |
746 c=*srcptr; | |
747 mode=5; | |
748 } | |
749 if (debug) fprintf(stderr,"DEBUG: scanoperands: c=%c (%02X)\n",c,c); | |
750 switch(c) { | |
751 case 'D': case 'd': | |
752 oldsrcptr=srcptr; | |
753 srcptr++; | |
754 skipspace(); | |
755 if(*srcptr!=',')RESTORE else { | |
756 postbyte=0x8b; | |
757 srcptr++; | |
758 if(!scanindexreg())RESTORE else {srcptr++;set3();} | |
759 } | |
760 break; | |
761 case 'A': case 'a': | |
762 oldsrcptr=srcptr; | |
763 srcptr++; | |
764 skipspace(); | |
765 if(*srcptr!=',')RESTORE else { | |
766 postbyte=0x86; | |
767 srcptr++; | |
768 if(!scanindexreg())RESTORE else {srcptr++;set3();} | |
769 } | |
770 break; | |
771 case 'B': case 'b': | |
772 oldsrcptr=srcptr; | |
773 srcptr++; | |
774 skipspace(); | |
775 if(*srcptr!=',')RESTORE else { | |
776 postbyte=0x85; | |
777 srcptr++; | |
778 if (debug) fprintf(stderr,"DEBUG: scanoperands: breg preindex: c=%c (%02X)\n",*srcptr,*srcptr); | |
779 if(!scanindexreg())RESTORE else {srcptr++;set3();} | |
780 if (debug) fprintf(stderr,"DEBUG: scanoperands: breg: postindex c=%c (%02X)\n",*srcptr,*srcptr); | |
781 } | |
782 break; | |
783 case ',': | |
784 srcptr++; | |
785 scanspecial(); | |
786 break; | |
787 case '#': | |
788 if(mode==5)error|=2;else mode=0; | |
789 srcptr++; | |
5 | 790 if (*srcptr=='"') { |
791 operand = (srcptr[1]<<8) + srcptr[2] ; | |
792 srcptr += 3; | |
793 break; | |
794 } | |
0 | 795 operand=scanexpr(0); |
796 break; | |
797 case '<': | |
798 srcptr++; | |
799 if(*srcptr=='<') { | |
800 srcptr++; | |
801 opsize=1; | |
802 } else opsize=2; | |
803 goto dodefault; | |
804 case '>': | |
805 srcptr++; | |
806 opsize=3; | |
807 default: dodefault: | |
808 operand=scanexpr(0); | |
809 skipspace(); | |
810 if(*srcptr==',') { | |
811 srcptr++; | |
812 scanindexed(); | |
813 } else { | |
814 if(opsize==0) { | |
815 if(unknown||!certain||dpsetting==-1|| | |
816 (unsigned short)(operand-dpsetting*256)>=256) | |
817 opsize=3; else opsize=2; | |
818 } | |
819 if(opsize==1)opsize=2; | |
820 if(mode==5){ | |
821 postbyte=0x8f; | |
822 opsize=3; | |
823 } else mode=opsize-1; | |
824 } | |
825 } | |
826 if (debug) fprintf(stderr,"DEBUG: scanoperands: mode=%d, error=%d, postbyte=%02X\n",mode,error,postbyte); | |
827 if(mode>=5) { | |
828 skipspace(); | |
829 postbyte|=0x10; | |
830 if(*srcptr!=']')error|=2;else srcptr++; | |
831 } | |
832 if(pass==2&&unknown)error|=4; | |
833 } | |
834 | |
835 unsigned char codebuf[128]; | |
836 int codeptr; /* byte offset within instruction */ | |
837 int suppress; /* 0=no suppress 1=until ENDIF 2=until ELSE 3=until ENDM */ | |
838 int ifcount; /* count of nested IFs within suppressed text */ | |
839 | |
840 unsigned char outmode; /* 0 is binary, 1 is s-records */ | |
841 | |
842 unsigned short hexaddr; | |
843 int hexcount; | |
844 unsigned char hexbuffer[16]; | |
845 unsigned int chksum; | |
846 | |
847 extern int os9crc(unsigned char c, int crcp); | |
848 int crc; | |
849 | |
850 void | |
851 reset_crc() | |
852 { | |
853 crc = -1; | |
854 } | |
855 | |
856 | |
857 void | |
858 flushhex() | |
859 { | |
860 int i; | |
861 if(hexcount){ | |
862 fprintf(objfile,"S1%02X%04X",(hexcount+3)&0xff,hexaddr&0xffff); | |
863 for(i=0;i<hexcount;i++)fprintf(objfile,"%02X",hexbuffer[i]); | |
864 chksum+=(hexaddr&0xff)+((hexaddr>>8)&0xff)+hexcount+3; | |
865 fprintf(objfile,"%02X\n",0xff-(chksum&0xff)); | |
866 hexaddr+=hexcount; | |
867 hexcount=0; | |
868 chksum=0; | |
869 } | |
870 } | |
871 | |
872 void | |
873 outhex(unsigned char x) | |
874 { | |
875 if(hexcount==16)flushhex(); | |
876 hexbuffer[hexcount++]=x; | |
877 chksum+=x; | |
878 } | |
879 | |
880 void | |
881 outbuffer() | |
882 { | |
883 int i; | |
884 for(i=0;i<codeptr;i++) { | |
885 crc = os9crc(codebuf[i],crc); | |
886 if(!outmode)fputc(codebuf[i],objfile);else outhex(codebuf[i]); | |
887 } | |
888 } | |
889 | |
890 char *errormsg[]={"Error in expression", | |
891 "Illegal addressing mode", | |
892 "Undefined label", | |
893 "Multiple definitions of label", | |
894 "Relative branch out of range", | |
895 "Missing label", | |
896 "","","","","","","","","", | |
897 "Illegal mnemonic" | |
898 }; | |
899 | |
900 void | |
901 report() | |
902 { | |
903 int i; | |
904 fprintf(stderr,"File %s, line %d:%s\n",curname,lineno,srcline); | |
905 for(i=0;i<16;i++) { | |
906 if(error&1) { | |
907 fprintf(stderr,"%s\n",errormsg[i]); | |
908 if(pass==2&&listing)fprintf(listfile,"**** %s\n",errormsg[i]); | |
909 } | |
910 error>>=1; | |
911 } | |
5 | 912 error = 0; |
0 | 913 errors++; |
914 } | |
915 | |
916 void | |
917 outlist() | |
918 { | |
919 int i; | |
920 fprintf(listfile,"%04X: ",oldlc); | |
921 for(i=0;i<codeptr&&i<MAXLISTBYTES;i++) | |
922 fprintf(listfile,"%02X",codebuf[i]); | |
923 for(;i<=MAXLISTBYTES;i++) | |
924 fprintf(listfile," "); | |
925 fprintf(listfile,"%s\n",srcline); | |
926 while(i<codeptr) { | |
927 fprintf(listfile,"%04X: ",oldlc + i); | |
928 for(int j=0;i<codeptr&&j<MAXLISTBYTES;j++) { | |
929 fprintf(listfile,"%02X",codebuf[i]); i++; | |
930 } | |
931 fprintf(listfile,"\n"); | |
932 } | |
933 } | |
934 | |
935 void | |
936 setlabel(struct symrecord * lp) | |
937 { | |
33 | 938 while (prevlp) { |
26 | 939 struct symrecord *l = prevlp; |
33 | 940 prevlp = prevlp->next; |
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39
diff
changeset
|
941 l->next = 0; |
26 | 942 setlabel(l); |
943 } | |
0 | 944 if(lp) { |
945 if(lp->cat!=13&&lp->cat!=6) { | |
946 if(lp->cat!=2||lp->value!=loccounter) | |
38 | 947 lp->value=loccounter; // error|=8; |
0 | 948 } else { |
949 lp->cat=2; | |
950 lp->value=loccounter; | |
951 } | |
952 } | |
953 } | |
954 | |
955 void | |
956 putbyte(unsigned char b) | |
957 { | |
958 codebuf[codeptr++]=b; | |
959 } | |
960 | |
961 void | |
962 putword(unsigned short w) | |
963 { | |
964 codebuf[codeptr++]=w>>8; | |
965 codebuf[codeptr++]=w&0x0ff; | |
966 } | |
967 | |
968 void | |
969 doaddress() /* assemble the right addressing bytes for an instruction */ | |
970 { | |
971 int offs; | |
972 switch(mode) { | |
973 case 0: if(opsize==2)putbyte(operand);else putword(operand);break; | |
974 case 1: putbyte(operand);break; | |
975 case 2: putword(operand);break; | |
976 case 3: case 5: putbyte(postbyte); | |
977 switch(opsize) { | |
978 case 2: putbyte(operand);break; | |
979 case 3: putword(operand); | |
980 } | |
981 break; | |
982 case 4: case 6: offs=(unsigned short)operand-loccounter-codeptr-2; | |
983 if(offs<-128||offs>=128||opsize==3||unknown||!certain) { | |
33 | 984 if((!unknown)&&opsize==2&&(offs<-128||offs>=128) ) { |
985 error|=16; makelonger(glineno); | |
986 } | |
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diff
changeset
|
987 offs--; |
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diff
changeset
|
988 opsize=3; |
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changeset
|
989 postbyte++; |
0 | 990 } |
991 putbyte(postbyte); | |
992 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); | |
993 if(opsize==3)putword(offs); | |
994 else putbyte(offs); | |
995 } | |
996 } | |
997 | |
998 void | |
999 onebyte(int co) | |
1000 { | |
1001 putbyte(co); | |
1002 } | |
1003 | |
1004 void | |
1005 twobyte(int co) | |
1006 { | |
1007 putword(co); | |
1008 } | |
1009 | |
1010 void | |
1011 oneimm(int co) | |
1012 { | |
1013 scanoperands(); | |
5 | 1014 if(mode>=3) |
1015 error|=2; | |
0 | 1016 putbyte(co); |
1017 putbyte(operand); | |
1018 } | |
1019 | |
1020 void | |
1021 lea(int co) | |
1022 { | |
1023 putbyte(co); | |
1024 scanoperands(); | |
1025 if(mode==0) error|=2; | |
1026 if(mode<3) { | |
1027 opsize=3; | |
1028 postbyte=0x8f; | |
1029 mode=3; | |
1030 } | |
1031 if (debug) fprintf(stderr,"DEBUG: lea: mode=%d, opsize=%d, error=%d, postbyte=%02X, *src=%c\n",mode,opsize,error,postbyte,*srcptr); | |
1032 doaddress(); | |
1033 } | |
1034 | |
1035 void | |
1036 sbranch(int co) | |
1037 { | |
1038 int offs; | |
1039 scanoperands(); | |
1040 if(mode!=1&&mode!=2)error|=2; | |
1041 offs=(unsigned short)operand-loccounter-2; | |
33 | 1042 if(!unknown&&(offs<-128||offs>=128)) { |
1043 error|=16;makelonger(glineno); | |
1044 if (co==0x20) { | |
1045 if(mode!=1&&mode!=2)error|=2; | |
1046 putbyte(0x16); | |
1047 putword(operand-loccounter-3); | |
1048 } else { | |
1049 if(mode!=1&&mode!=2)error|=2; | |
1050 putbyte(0x10); | |
1051 putbyte(co); | |
1052 putword(operand-loccounter-4); | |
1053 } | |
1054 return; | |
1055 } | |
0 | 1056 if(pass==2&&unknown)error|=4; |
1057 putbyte(co); | |
1058 putbyte(offs); | |
1059 } | |
1060 | |
1061 void | |
1062 lbra(int co) | |
1063 { | |
1064 scanoperands(); | |
1065 if(mode!=1&&mode!=2)error|=2; | |
1066 putbyte(co); | |
1067 putword(operand-loccounter-3); | |
1068 } | |
1069 | |
1070 void | |
1071 lbranch(int co) | |
1072 { | |
1073 scanoperands(); | |
1074 if(mode!=1&&mode!=2)error|=2; | |
1075 putword(co); | |
1076 putword(operand-loccounter-4); | |
1077 } | |
1078 | |
1079 void | |
1080 arith(int co) | |
1081 { | |
1082 scanoperands(); | |
1083 switch(mode) { | |
1084 case 0:opsize=2;putbyte(co);break; | |
1085 case 1:putbyte(co+0x010);break; | |
1086 case 2:putbyte(co+0x030);break; | |
1087 default:putbyte(co+0x020); | |
1088 } | |
1089 doaddress(); | |
1090 } | |
1091 | |
1092 void | |
1093 darith(int co) | |
1094 { | |
1095 scanoperands(); | |
1096 switch(mode) { | |
1097 case 0:opsize=3;putbyte(co);break; | |
1098 case 1:putbyte(co+0x010);break; | |
1099 case 2:putbyte(co+0x030);break; | |
1100 default:putbyte(co+0x020); | |
1101 } | |
1102 doaddress(); | |
1103 } | |
1104 | |
1105 void | |
1106 d2arith(int co) | |
1107 { | |
1108 scanoperands(); | |
1109 switch(mode) { | |
1110 case 0:opsize=3;putword(co);break; | |
1111 case 1:putword(co+0x010);break; | |
1112 case 2:putword(co+0x030);break; | |
1113 default:putword(co+0x020); | |
1114 } | |
1115 doaddress(); | |
1116 } | |
1117 | |
1118 void | |
1119 oneaddr(int co) | |
1120 { | |
1121 scanoperands(); | |
1122 switch(mode) { | |
1123 case 0: error|=2;break; | |
1124 case 1: putbyte(co);break; | |
1125 case 2: putbyte(co+0x70);break; | |
1126 default: putbyte(co+0x60);break; | |
1127 } | |
1128 doaddress(); | |
1129 } | |
1130 | |
1131 void | |
1132 tfrexg(int co) | |
1133 { | |
1134 struct regrecord * p; | |
1135 putbyte(co); | |
1136 skipspace(); | |
1137 scanname(); | |
1138 if((p=findreg(namebuf))==0)error|=2; | |
1139 else postbyte=(p->tfr)<<4; | |
1140 skipspace(); | |
1141 if(*srcptr==',')srcptr++;else error|=2; | |
1142 skipspace(); | |
1143 scanname(); | |
1144 if((p=findreg(namebuf))==0)error|=2; | |
1145 else postbyte|=p->tfr; | |
1146 putbyte(postbyte); | |
1147 } | |
1148 | |
1149 void | |
1150 pshpul(int co) | |
1151 { | |
1152 struct regrecord *p; | |
1153 putbyte(co); | |
1154 postbyte=0; | |
1155 do { | |
1156 if(*srcptr==',')srcptr++; | |
1157 skipspace(); | |
1158 scanname(); | |
1159 if((p=findreg(namebuf))==0)error|=2; | |
1160 else postbyte|=p->psh; | |
1161 skipspace(); | |
1162 }while (*srcptr==','); | |
1163 putbyte(postbyte); | |
1164 } | |
1165 | |
1166 void | |
1167 skipComma() | |
1168 { | |
1169 while(*srcptr && *srcptr!='\n' && *srcptr!=',')srcptr++; | |
1170 if (*srcptr==',') { | |
1171 srcptr++; | |
1172 } else { | |
1173 error|=1; | |
1174 } | |
1175 } | |
1176 | |
1177 void os9begin() | |
1178 { | |
6 | 1179 generate(); |
39 | 1180 os9=1; // contiguous code generation ( seprate rmb and code ) |
34 | 1181 oldlc = loccounter = rmbcounter = rmbmode = 0; |
0 | 1182 reset_crc(); |
1183 putword(0x87cd); | |
1184 putword(scanexpr(0)-loccounter); // module size | |
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1185 if(unknown&&pass==2)error|=4; |
0 | 1186 skipComma(); |
1187 putword(scanexpr(0)-loccounter); // offset to module name | |
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1188 if(unknown&&pass==2)error|=4; |
0 | 1189 skipComma(); |
1190 putbyte(scanexpr(0)); // type / language | |
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1191 if(unknown&&pass==2)error|=4; |
0 | 1192 skipComma(); |
1193 putbyte(scanexpr(0)); // attribute | |
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1194 if(unknown&&pass==2)error|=4; |
0 | 1195 int parity=0; |
1196 for(int i=0; i< 8; i++) parity^=codebuf[i]; | |
1197 putbyte(parity^0xff); // header parity | |
1198 skipspace(); | |
1199 while (*srcptr==',') { // there are some more | |
1200 srcptr++; | |
1201 putword(scanexpr(0)); | |
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1202 if(unknown&&pass==2)error|=4; |
0 | 1203 skipspace(); |
1204 } | |
34 | 1205 prevloc = codeptr; |
1206 rmbmode = 1; // next org works on rmb | |
39 | 1207 rmbcounter=0; |
34 | 1208 loccounter = 0x10000-codeptr; // should start at 0 |
0 | 1209 } |
1210 | |
1211 void os9end() | |
1212 { | |
1213 crc = crc ^ 0xffffff; | |
1214 | |
1215 putbyte((crc>>16)&0xff); | |
1216 putbyte((crc>>8)&0xff); | |
1217 putbyte(crc&0xff); | |
39 | 1218 os9 = 0; |
0 | 1219 } |
1220 | |
1221 | |
1222 void | |
1223 pseudoop(int co,struct symrecord * lp) | |
1224 { | |
1225 int i; | |
1226 char c; | |
1227 char *fname; | |
1228 int locsave; | |
1229 | |
1230 switch(co) { | |
1231 case 0:/* RMB */ | |
3 | 1232 // in OS9 mode, this generates no data |
1233 // loccounter will be reset after any code to the current code generation | |
34 | 1234 if (os9 && !rmbmode) { |
1235 prevloc = loccounter; | |
1236 oldlc = loccounter = rmbcounter; | |
1237 rmbmode = 1; | |
33 | 1238 } |
0 | 1239 setlabel(lp); |
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1240 oldlc = loccounter; |
0 | 1241 operand=scanexpr(0); |
1242 if(unknown)error|=4; | |
1243 loccounter+=operand; | |
1244 if(generating&&pass==2) { | |
6 | 1245 if(!outmode && !os9 ) { |
1246 for(i=0;i<operand;i++) { fputc(0,objfile); } | |
1247 } else | |
1248 flushhex(); | |
0 | 1249 } |
1250 hexaddr=loccounter; | |
1251 break; | |
1252 case 5:/* EQU */ | |
1253 operand=scanexpr(0); | |
1254 if(!lp)error|=32; | |
1255 else { | |
1256 if(lp->cat==13||lp->cat==6|| | |
1257 (lp->value==(unsigned short)operand&&pass==2)) { | |
1258 if(exprcat==2)lp->cat=2; | |
1259 else lp->cat=0; | |
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1260 lp->value=oldlc=operand; |
38 | 1261 } else // else error|=8; |
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1262 lp->value=oldlc=operand; |
0 | 1263 } |
1264 break; | |
1265 case 7:/* FCB */ | |
6 | 1266 generate(); |
0 | 1267 setlabel(lp); |
1268 do { | |
1269 if(*srcptr==',')srcptr++; | |
1270 skipspace(); | |
1271 if(*srcptr=='\"') { | |
1272 srcptr++; | |
1273 while(*srcptr!='\"'&&*srcptr) | |
1274 putbyte(*srcptr++); | |
1275 if(*srcptr=='\"')srcptr++; | |
1276 } else { | |
1277 putbyte(scanexpr(0)); | |
1278 if(unknown&&pass==2)error|=4; | |
1279 } | |
1280 skipspace(); | |
1281 } while(*srcptr==','); | |
1282 break; | |
1283 case 8:/* FCC */ | |
6 | 1284 generate(); |
0 | 1285 setlabel(lp); |
1286 skipspace(); | |
1287 c=*srcptr++; | |
1288 while(*srcptr!=c&&*srcptr) | |
1289 putbyte(*srcptr++); | |
1290 if(*srcptr==c)srcptr++; | |
1291 break; | |
1292 case 9:/* FDB */ | |
6 | 1293 generate(); |
0 | 1294 setlabel(lp); |
1295 do { | |
1296 if(*srcptr==',')srcptr++; | |
1297 skipspace(); | |
1298 putword(scanexpr(0)); | |
1299 if(unknown&&pass==2)error|=4; | |
1300 skipspace(); | |
1301 } while(*srcptr==','); | |
1302 break; | |
1303 case 23 :/* FCS */ | |
6 | 1304 generate(); |
0 | 1305 setlabel(lp); |
1306 skipspace(); | |
1307 int sep = *srcptr; | |
35 | 1308 if(sep=='\"' || sep=='/' || sep=='\'') { |
0 | 1309 srcptr++; |
1310 while(*srcptr!=sep&&*srcptr) | |
1311 putbyte(*srcptr++); | |
1312 if(*srcptr==sep)srcptr++; | |
1313 codebuf[codeptr-1] |= 0x80; // os9 string termination | |
1314 } | |
1315 break; | |
1316 case 1: /* ELSE */ | |
1317 suppress=1; | |
1318 break; | |
1319 case 21: /* IFP1 */ | |
1320 if(pass==2)suppress=2; | |
1321 break; | |
1322 case 29: /* IFGT */ | |
1323 operand=scanexpr(0); | |
33 | 1324 if(operand<=0)suppress=2; |
0 | 1325 break; |
1326 case 31: /* IFLT */ | |
1327 operand=scanexpr(0); | |
33 | 1328 if(operand>=0)suppress=2; |
0 | 1329 break; |
3 | 1330 case 30: /* IFEQ */ |
0 | 1331 operand=scanexpr(0); |
33 | 1332 if(operand!=0)suppress=2; |
0 | 1333 break; |
3 | 1334 case 28: /* IFNE */ |
0 | 1335 case 10: /* IF */ |
1336 operand=scanexpr(0); | |
33 | 1337 if(operand==0)suppress=2; |
1338 break; | |
1339 case 33: /* IFNDEF */ | |
1340 operand=scanexpr(0); | |
1341 if(!unknown)suppress=2; | |
0 | 1342 break; |
1343 case 12: /* ORG */ | |
1344 operand=scanexpr(0); | |
1345 if(unknown)error|=4; | |
3 | 1346 if(generating&&pass==2&&!outmode&&!os9) { |
0 | 1347 for(i=0;i<(unsigned short)operand-loccounter;i++) |
3 | 1348 fputc(0,objfile); |
1349 } else flushhex(); | |
0 | 1350 loccounter=operand; |
1351 hexaddr=loccounter; | |
1352 break; | |
1353 case 14: /* SETDP */ | |
1354 operand=scanexpr(0); | |
1355 if(unknown)error|=4; | |
1356 if(!(operand&255))operand=(unsigned short)operand>>8; | |
1357 if((unsigned)operand>255)operand=-1; | |
1358 dpsetting=operand; | |
1359 break; | |
1360 case 15: /* SET */ | |
1361 operand=scanexpr(0); | |
1362 if(!lp)error|=32; | |
1363 else { | |
1364 if(lp->cat&1||lp->cat==6) { | |
1365 if(exprcat==2)lp->cat=3; | |
1366 else lp->cat=1; | |
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1367 lp->value=oldlc=operand; |
38 | 1368 } else // else error|=8; |
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1369 lp->value=oldlc=operand; |
0 | 1370 } |
1371 break; | |
1372 case 2: /* END */ | |
1373 terminate=1; | |
1374 break; | |
1375 case 27: /* USE */ | |
1376 case 16: /* INCLUDE */ | |
1377 skipspace(); | |
1378 if(*srcptr=='"')srcptr++; | |
1379 i = 0; | |
1380 for(i=0; !(srcptr[i]==0||srcptr[i]=='"'); i++); | |
1381 int len = i; | |
1382 fname = calloc(1,len); | |
1383 for(i=0;i<len;i++) { | |
1384 if(*srcptr==0||*srcptr=='"')break; | |
1385 fname[i]=*srcptr++; | |
1386 } | |
1387 fname[i]=0; | |
1388 processfile(fname); | |
1389 codeptr=0; | |
1390 srcline[0]=0; | |
1391 break; | |
1392 case 24: /* MOD */ | |
6 | 1393 oldlc = loccounter = 0; |
0 | 1394 setlabel(lp); |
1395 os9begin(); | |
1396 break; | |
1397 case 25: /* EMOD */ | |
1398 os9end(); | |
1399 break; | |
1400 case 32: /* OS9 */ | |
6 | 1401 generate(); |
0 | 1402 setlabel(lp); |
3 | 1403 putword(0x103f); // SWI2 |
0 | 1404 putbyte(scanexpr(0)); |
15 | 1405 if(unknown&&pass==2)error|=4; |
0 | 1406 break; |
1407 case 18: /* TTL */ | |
1408 break; | |
1409 case 19: /* OPT */ | |
1410 case 26: /* NAM */ | |
1411 case 20: /* PAG */ | |
1412 case 3: /* ENDIF/ENDC */ | |
1413 break; | |
1414 } | |
1415 } | |
1416 | |
1417 | |
1418 void | |
1419 processline() | |
1420 { | |
1421 struct symrecord * lp; | |
1422 struct oprecord * op; | |
1423 int co; | |
1424 char c; | |
1425 srcptr=srcline; | |
1426 oldlc=loccounter; | |
5 | 1427 // error=0; |
0 | 1428 unknown=0;certain=1; |
1429 lp=0; | |
1430 codeptr=0; | |
1431 if(isalnum(*srcptr)) { | |
1432 scanname();lp=findsym(namebuf); | |
1433 if(*srcptr==':') srcptr++; | |
26 | 1434 if(lp && pass==2) { |
1435 oldlc = lp->value; | |
1436 } | |
0 | 1437 } |
1438 skipspace(); | |
1439 if(isalnum(*srcptr)) { | |
1440 scanname(); | |
1441 op=findop(namebuf); | |
1442 if(op) { | |
1443 if(op->cat!=13){ | |
6 | 1444 generate(); |
0 | 1445 setlabel(lp); |
1446 } | |
1447 co=op->code; | |
1448 switch(op->cat) { | |
1449 case 0:onebyte(co);break; | |
1450 case 1:twobyte(co);break; | |
1451 case 2:oneimm(co);break; | |
1452 case 3:lea(co);break; | |
1453 case 4:sbranch(co);break; | |
1454 case 5:lbranch(co);break; | |
1455 case 6:lbra(co);break; | |
1456 case 7:arith(co);break; | |
1457 case 8:darith(co);break; | |
1458 case 9:d2arith(co);break; | |
1459 case 10:oneaddr(co);break; | |
1460 case 11:tfrexg(co);break; | |
1461 case 12:pshpul(co);break; | |
1462 case 13:pseudoop(co,lp); | |
1463 } | |
1464 c=*srcptr; | |
1465 if (debug) fprintf(stderr,"DEBUG: processline: mode=%d, opsize=%d, error=%d, postbyte=%02X c=%c\n",mode,opsize,error,postbyte,c); | |
1466 if(c!=' '&&*(srcptr-1)!=' '&&c!=0&&c!=';')error|=2; | |
1467 } | |
1468 else error|=0x8000; | |
26 | 1469 } else { |
33 | 1470 if (lp) { |
1471 lp->next = prevlp; | |
1472 prevlp = lp; // os9 mode label can be data or code | |
1473 } | |
26 | 1474 } |
0 | 1475 if(pass==2) { |
1476 outbuffer(); | |
1477 if(listing)outlist(); | |
1478 } | |
1479 if(error)report(); | |
1480 loccounter+=codeptr; | |
1481 } | |
1482 | |
1483 void | |
1484 suppressline() | |
1485 { | |
1486 struct oprecord * op; | |
1487 srcptr=srcline; | |
1488 oldlc=loccounter; | |
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diff
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1489 struct symrecord * lp = 0; |
0 | 1490 codeptr=0; |
1491 if(isalnum(*srcptr)) { | |
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1492 scanname();lp=findsym(namebuf); |
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|
1493 if (lp) oldlc = lp->value; |
0 | 1494 if(*srcptr==':')srcptr++; |
1495 } | |
1496 skipspace(); | |
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1497 scanname();op=findop(namebuf); |
0 | 1498 if(op && op->cat==13) { |
33 | 1499 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 | 1500 else if(op->code==3) { |
1501 if(ifcount>0)ifcount--;else if(suppress==1|suppress==2)suppress=0; | |
1502 } else if(op->code==1) { | |
1503 if(ifcount==0 && suppress==2)suppress=0; | |
1504 } | |
1505 } | |
6 | 1506 if(pass==2&&listing)outlist(); } |
0 | 1507 |
1508 void | |
1509 usage(char*nm) | |
1510 { | |
1511 fprintf(stderr,"Usage: %s [-o objname] [-l listname] [-s srecord-file] srcname\n",nm); | |
1512 exit(2); | |
1513 } | |
1514 | |
1515 char * | |
1516 strconcat(char *s,int spos,char *d) | |
1517 { | |
1518 int slen = strlen(s); | |
1519 int dlen = strlen(d); | |
1520 if ( spos == 0) spos = slen; | |
1521 char *out = calloc(1,spos+dlen+1); | |
1522 int i = 0; | |
1523 for(; i< spos; i++ ) out[i] = s[i]; | |
1524 for(; i< spos+dlen+1; i++ ) out[i] = *d++; | |
1525 return out; | |
1526 } | |
1527 | |
1528 | |
1529 void | |
1530 getoptions(int c,char*v[]) | |
1531 { | |
6 | 1532 int i=1; |
0 | 1533 if(c==1)usage(v[0]); |
6 | 1534 while(v[i]) { |
1535 if(strcmp(v[i],"-d")==0) { | |
1536 debug=1; | |
1537 i++; | |
1538 } else if(strcmp(v[i],"-o")==0) { | |
1539 objname = v[i+1]; | |
1540 i+=2; | |
1541 } else if(strcmp(v[i],"-s")==0) { | |
1542 objname=v[i+1]; | |
1543 outmode=1; | |
1544 i+=2; | |
1545 } else if(strcmp(v[i],"-l")==0) { | |
1546 listname=v[i+1]; | |
1547 i+=2; | |
33 | 1548 } else if(strcmp(v[i],"-I")==0) { |
1549 struct incl *j = (struct incl *)malloc(sizeof(struct incl)); | |
1550 j->name = v[i+1]; | |
1551 j->next = 0; | |
1552 if (!incls) incls = j; | |
1553 else { | |
1554 struct incl *k=incls ; | |
1555 for(; k->next ; k = k->next ) ; | |
1556 k->next = j; | |
1557 } | |
1558 i+=2; | |
6 | 1559 } else if(*v[i]=='-') { |
1560 usage(v[0]); | |
1561 } else { | |
1562 if (srcname) usage(v[0]); | |
1563 srcname=v[i]; | |
1564 i++; | |
1565 } | |
0 | 1566 } |
1567 if(objname==0) { | |
1568 for(i=0;srcname[i]!='.' && srcname[i]!=0 ;i++) ; | |
1569 objname = strconcat(srcname,i,".b"); | |
1570 } | |
1571 listing=(listname!=0); | |
1572 } | |
1573 | |
1574 void | |
1575 expandline() | |
1576 { | |
1577 int i=0,j=0,k,j1; | |
1578 for(i=0;i<128&&j<128;i++) | |
1579 { | |
1580 if(inpline[i]=='\n') { | |
1581 srcline[j]=0;break; | |
1582 } | |
1583 if(inpline[i]=='\t') { | |
1584 j1=j; | |
1585 for(k=0;k<8-j1%8 && j<128;k++)srcline[j++]=' '; | |
1586 }else srcline[j++]=inpline[i]; | |
1587 } | |
1588 srcline[127]=0; | |
1589 } | |
1590 | |
1591 | |
1592 void | |
1593 processfile(char *name) | |
1594 { | |
1595 char *oldname; | |
1596 int oldno; | |
1597 FILE *srcfile; | |
1598 oldname=curname; | |
1599 curname=name; | |
1600 oldno=lineno; | |
1601 lineno=0; | |
1602 if((srcfile=fopen(name,"r"))==0) { | |
6 | 1603 int i = 0; |
1604 if (oldname) { | |
1605 i = strlen(oldname); | |
1606 while(i>0 && oldname[i]!='/') i--; | |
1607 } | |
0 | 1608 if (i>0) { |
1609 char *next = strconcat(oldname,i+1,name); | |
33 | 1610 if((srcfile=fopen(next,"r"))!=0) { |
1611 curname = next; | |
0 | 1612 } |
33 | 1613 } |
1614 if (!srcfile) { | |
1615 for( struct incl *d = incls; d ; d = d->next) { | |
1616 char *next = strconcat(d->name,0,name); | |
1617 if((srcfile=fopen(next,"r"))!=0) { | |
1618 curname = next; | |
1619 break; | |
1620 } | |
1621 } | |
1622 } | |
1623 } | |
1624 if (!srcfile) { | |
0 | 1625 fprintf(stderr,"Cannot open source file %s\n",name); |
1626 exit(4); | |
1627 } | |
1628 while(!terminate&&fgets(inpline,128,srcfile)) { | |
1629 expandline(); | |
33 | 1630 lineno++; glineno++; |
0 | 1631 srcptr=srcline; |
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1632 if(suppress) |
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1633 suppressline(); |
b8fa36c04ff7
fix multiple label on empty line
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
39
diff
changeset
|
1634 else |
b8fa36c04ff7
fix multiple label on empty line
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
39
diff
changeset
|
1635 processline(); |
0 | 1636 } |
26 | 1637 setlabel(0); // process prevlp |
0 | 1638 fclose(srcfile); |
1639 if(suppress) { | |
1640 fprintf(stderr,"improperly nested IF statements in %s",curname); | |
1641 errors++; | |
1642 suppress=0; | |
1643 } | |
1644 lineno=oldno; | |
1645 curname=oldname; | |
1646 } | |
1647 | |
1648 int | |
1649 main(int argc,char *argv[]) | |
1650 { | |
1651 char c; | |
1652 getoptions(argc,argv); | |
1653 pass=1; | |
1654 errors=0; | |
1655 generating=0; | |
1656 terminate=0; | |
1657 processfile(srcname); | |
1658 if(errors) { | |
1659 fprintf(stderr,"%d Pass 1 Errors, Continue?",errors); | |
1660 c=getchar(); | |
1661 if(c=='n'||c=='N') exit(3); | |
1662 } | |
33 | 1663 do { |
0 | 1664 pass=2; |
6 | 1665 prevloc = 0; |
0 | 1666 loccounter=0; |
39 | 1667 rmbcounter=0; |
0 | 1668 errors=0; |
1669 generating=0; | |
1670 terminate=0; | |
33 | 1671 glineno=0; |
0 | 1672 if(listing&&((listfile=fopen(listname,"w"))==0)) { |
1673 fprintf(stderr,"Cannot open list file"); | |
1674 exit(4); | |
1675 } | |
1676 if((objfile=fopen(objname,outmode?"w":"wb"))==0) { | |
1677 fprintf(stderr,"Cannot write object file\n"); | |
1678 exit(4); | |
1679 } | |
1680 processfile(srcname); | |
1681 fprintf(stderr,"%d Pass 2 errors.\n",errors); | |
1682 if(listing) { | |
1683 fprintf(listfile,"%d Pass 2 errors.\n",errors); | |
1684 outsymtable(); | |
1685 fclose(listfile); | |
1686 } | |
1687 if(outmode){ | |
1688 flushhex(); | |
1689 fprintf(objfile,"S9030000FC\n"); | |
1690 } | |
1691 fclose(objfile); | |
38 | 1692 } while (longer()); |
0 | 1693 return 0; |
1694 } | |
1695 |