Mercurial > hg > Members > kono > os9 > sbc09
annotate a09.c @ 26:51a35f0347f6
fix label
| author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Wed, 11 Jul 2018 01:00:18 +0900 |
| parents | c4e3abe97e2c |
| children | 3c14d647bb51 |
| rev | line source |
|---|---|
| 0 | 1 /* A09, 6809 Assembler. |
| 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. | |
| 46 */ | |
| 47 | |
| 48 #include <stdlib.h> | |
| 49 #include <stdio.h> | |
| 50 #include <string.h> | |
| 51 #include <ctype.h> | |
| 52 | |
| 53 #define NLABELS 2048 | |
| 54 #define MAXIDLEN 16 | |
| 55 #define MAXLISTBYTES 8 | |
| 56 #define FNLEN 30 | |
| 57 #define LINELEN 128 | |
| 58 | |
| 59 static int debug=0; | |
| 60 | |
| 61 struct oprecord{char * name; | |
| 62 unsigned char cat; | |
| 63 unsigned short code;}; | |
| 64 | |
| 65 /* Instruction categories: | |
| 66 0 one byte oprcodes NOP | |
| 67 1 two byte opcodes SWI2 | |
| 68 2 opcodes w. imm byte ANDCC | |
| 69 3 LEAX etc. | |
| 70 4 short branches. BGE | |
| 71 5 long branches 2byte opc LBGE | |
| 72 6 long branches 1byte opc LBRA | |
| 73 7 accumulator instr. ADDA | |
| 74 8 double reg instr 1byte opc LDX | |
| 75 9 double reg instr 2 byte opc LDY | |
| 76 10 single address instrs NEG | |
| 77 11 TFR, EXG | |
| 78 12 push,pull | |
| 79 13 pseudoops | |
| 80 */ | |
| 81 | |
| 82 struct oprecord optable[]={ | |
| 83 {"ABX",0,0x3a},{"ADCA",7,0x89},{"ADCB",7,0xc9}, | |
| 84 {"ADDA",7,0x8b},{"ADDB",7,0xcb},{"ADDD",8,0xc3}, | |
| 85 {"ANDA",7,0X84},{"ANDB",7,0xc4},{"ANDCC",2,0x1c}, | |
| 86 {"ASL",10,0x08},{"ASLA",0,0x48},{"ASLB",0,0x58}, | |
| 87 {"ASR",10,0x07},{"ASRA",0,0x47},{"ASRB",0,0x57}, | |
| 88 {"BCC",4,0x24},{"BCS",4,0x25},{"BEQ",4,0x27}, | |
| 89 {"BGE",4,0x2c},{"BGT",4,0x2e},{"BHI",4,0x22}, | |
| 90 {"BHS",4,0x24},{"BITA",7,0x85},{"BITB",7,0xc5}, | |
| 91 {"BLE",4,0x2f},{"BLO",4,0x25},{"BLS",4,0x23}, | |
| 92 {"BLT",4,0x2d},{"BMI",4,0x2b},{"BNE",4,0x26}, | |
| 93 {"BPL",4,0x2a},{"BRA",4,0x20},{"BRN",4,0x21}, | |
| 94 {"BSR",4,0x8d}, | |
| 95 {"BVC",4,0x28},{"BVS",4,0x29}, | |
| 96 {"CLC",1,0x1cfe},{"CLF",1,0x1cbf},{"CLI",1,0x1cef}, | |
| 97 {"CLIF",1,0x1caf}, | |
| 98 {"CLR",10,0x0f},{"CLRA",0,0x4f},{"CLRB",0,0x5f}, | |
| 99 {"CLV",1,0x1cfd}, | |
| 100 {"CMPA",7,0x81},{"CMPB",7,0xc1},{"CMPD",9,0x1083}, | |
| 101 {"CMPS",9,0x118c},{"CMPU",9,0x1183},{"CMPX",8,0x8c}, | |
| 102 {"CMPY",9,0x108c}, | |
| 103 {"COM",10,0x03},{"COMA",0,0x43},{"COMB",0,0x53}, | |
| 104 {"CWAI",2,0x3c},{"DAA",0,0x19}, | |
| 105 {"DEC",10,0x0a},{"DECA",0,0x4a},{"DECB",0,0x5a}, | |
| 106 {"DES",1,0x327f},{"DEU",1,0x335f},{"DEX",1,0x301f}, | |
| 107 {"DEY",1,0x313f}, | |
| 108 {"ELSE",13,1}, | |
| 109 {"EMOD",13,25}, | |
| 110 {"END",13,2}, | |
| 111 {"ENDC",13,3}, | |
| 112 {"ENDIF",13,3}, | |
| 113 {"ENDM",13,4}, | |
| 114 {"EORA",7,0x88},{"EORB",7,0xc8}, | |
| 115 {"EQU",13,5},{"EXG",11,0x1e},{"EXTERN",13,6}, | |
| 116 {"FCB",13,7},{"FCC",13,8}, | |
| 117 {"FCS",13,23}, | |
| 118 {"FCW",13,9}, | |
| 119 {"FDB",13,9}, | |
| 120 {"IF",13,10}, | |
| 121 {"IFEQ",13,29}, | |
| 122 {"IFGT",13,30}, | |
| 123 {"IFNE",13,28}, | |
| 124 {"IFP1",13,21}, | |
| 125 {"INC",10,0x0c},{"INCA",0,0x4c},{"INCB",0,0x5c}, | |
| 126 {"INCLUDE",13,16}, | |
| 127 {"INS",1,0x3261},{"INU",1,0x3341},{"INX",1,0x3001}, | |
| 128 {"INY",1,0x3121},{"JMP",10,0x0e},{"JSR",8,0x8d}, | |
| 129 {"LBCC",5,0x1024},{"LBCS",5,0x1025},{"LBEQ",5,0x1027}, | |
| 130 {"LBGE",5,0x102c},{"LBGT",5,0x102e},{"LBHI",5,0x1022}, | |
| 131 {"LBHS",5,0x1024}, | |
| 132 {"LBLE",5,0x102f},{"LBLO",5,0x1025},{"LBLS",5,0x1023}, | |
| 133 {"LBLT",5,0x102d},{"LBMI",5,0x102b},{"LBNE",5,0x1026}, | |
| 134 {"LBPL",5,0x102a},{"LBRA",6,0x16},{"LBRN",5,0x1021}, | |
| 135 {"LBSR",6,0x17}, | |
| 136 {"LBVC",5,0x1028},{"LBVS",5,0x1029}, | |
| 137 {"LDA",7,0x86},{"LDB",7,0xc6},{"LDD",8,0xcc}, | |
| 138 {"LDS",9,0x10ce},{"LDU",8,0xce},{"LDX",8,0x8e}, | |
| 139 {"LDY",9,0x108e},{"LEAS",3,0x32}, | |
| 140 {"LEAU",3,0x33},{"LEAX",3,0x30},{"LEAY",3,0x31}, | |
| 141 {"LSL",10,0x08},{"LSLA",0,0x48},{"LSLB",0,0x58}, | |
| 142 {"LSR",10,0x04},{"LSRA",0,0x44},{"LSRB",0,0x54}, | |
| 143 {"MACRO",13,11}, | |
| 144 {"MOD",13,24}, | |
| 145 {"MUL",0,0x3d}, | |
| 146 {"NAM",13,26}, | |
| 147 {"NEG",10,0x00},{"NEGA",0,0x40},{"NEGB",0,0x50}, | |
| 148 {"NOP",0,0x12}, | |
| 149 {"OPT",13,19}, | |
| 150 {"ORA",7,0x8a},{"ORB",7,0xca},{"ORCC",2,0x1a}, | |
| 151 {"ORG",13,12}, | |
| 152 {"OS9",13,32}, | |
| 153 {"PAG",13,20}, {"PAGE",13,20}, | |
| 154 {"PSHS",12,0x34},{"PSHU",12,0x36},{"PUBLIC",13,13}, | |
| 155 {"PULS",12,0x35},{"PULU",12,0x37},{"RMB",13,0}, | |
| 156 {"ROL",10,0x09},{"ROLA",0,0x49},{"ROLB",0,0x59}, | |
| 157 {"ROR",10,0x06},{"RORA",0,0x46},{"RORB",0,0x56}, | |
| 158 {"RTI",0,0x3b},{"RTS",0,0x39}, | |
| 159 {"SBCA",7,0x82},{"SBCB",7,0xc2}, | |
| 160 {"SEC",1,0x1a01},{"SEF",1,0x1a40},{"SEI",1,0x1a10}, | |
| 161 {"SEIF",1,0x1a50},{"SET",13,15}, | |
| 162 {"SETDP",13,14},{"SEV",1,0x1a02},{"SEX",0,0x1d}, | |
| 163 {"STA",7,0x87},{"STB",7,0xc7},{"STD",8,0xcd}, | |
| 164 {"STS",9,0x10cf},{"STU",8,0xcf},{"STX",8,0x8f}, | |
| 165 {"STY",9,0x108f}, | |
| 166 {"SUBA",7,0x80},{"SUBB",7,0xc0},{"SUBD",8,0x83}, | |
| 167 {"SWI",0,0x3f},{"SWI2",1,0x103f},{"SWI3",1,0x113f}, | |
| 168 {"SYNC",0,0x13},{"TFR",11,0x1f}, | |
| 169 {"TITLE",13,18}, | |
| 170 {"TST",10,0x0d},{"TSTA",0,0x4d},{"TSTB",0,0x5d}, | |
| 171 {"TTL",13,18}, | |
| 172 {"USE",13,27}, | |
| 173 }; | |
| 174 | |
| 175 struct symrecord{char name[MAXIDLEN+1]; | |
| 176 char cat; | |
| 177 unsigned short value; | |
| 178 }; | |
| 179 | |
| 180 int symcounter=0; | |
| 3 | 181 int os9 = 0; // os9 flag |
| 6 | 182 int prevloc = 0; |
| 26 | 183 struct symrecord * prevlp = 0; |
| 0 | 184 |
| 8 | 185 /* expression categories... |
| 186 ECORD all zeros is ordinary constant. | |
| 187 ECADR bit 1 indicates address within module. | |
| 188 ECEXT bit 2 indicates external address. | |
| 189 ECLBL bit 3 public label | |
| 190 ECABS bit 4 indicates this can't be relocated if it's an address. | |
| 191 ECNEG bit 5 indicates address (if any) is negative. | |
| 192 */ | |
| 193 | |
| 194 | |
| 195 /* Symbol categories. exprcat ( symcat & 0xe ) | |
| 196 0 SCC Constant value (from equ). ECORD | |
| 197 1 SCV Variable value (from set) ECORD | |
| 198 2 SCC__ADR Address within program module (label). ECADR | |
| 199 3 SCV__ADR Variable containing address. ECADR | |
| 200 4 SC_E_ADR Adress in other program module (extern) ECEXT | |
| 201 5 SCVE_ADR Variable containing external address. ECEXT | |
| 202 6 SCU _ADR Unresolved address. ECEXT+ECADR | |
| 203 7 SCV_UADR Variable containing unresolved address. ECEXT+ECADR | |
| 204 8 SC___LBL Public label. ECLBL | |
| 205 9 SCMACRO Macro definition. xxx | |
| 206 10 SCU__LBL Public label (yet undefined). ECADR+ECLBL | |
| 207 11 SCPARAM parameter name. ECADR+ECLBL | |
| 208 12 SCLOCAL local label. ECEXT+ECLBL | |
| 209 13 SCEMPTY empty. xxx | |
| 0 | 210 */ |
| 211 | |
| 212 struct symrecord symtable[NLABELS]; | |
| 213 | |
| 214 void processfile(char *name); | |
| 215 | |
| 216 struct oprecord * findop(char * nm) | |
| 217 /* Find operation (mnemonic) in table using binary search */ | |
| 218 { | |
| 219 int lo,hi,i,s; | |
| 220 lo=0;hi=sizeof(optable)/sizeof(optable[0])-1; | |
| 221 do { | |
| 222 i=(lo+hi)/2; | |
| 223 s=strcmp(optable[i].name,nm); | |
| 224 if(s<0) lo=i+1; | |
| 225 else if(s>0) hi=i-1; | |
| 226 else break; | |
| 227 } while(hi>=lo); | |
| 228 if (s) return NULL; | |
| 229 return optable+i; | |
| 230 } | |
| 231 | |
| 232 struct symrecord * findsym(char * nm) | |
| 233 /* finds symbol table record; inserts if not found | |
| 234 uses binary search, maintains sorted table */ | |
| 235 { | |
| 236 int lo,hi,i,j,s; | |
| 237 lo=0;hi=symcounter-1; | |
| 238 s=1;i=0; | |
| 239 while (hi>=lo) { | |
| 240 i=(lo+hi)/2; | |
| 241 s=strcmp(symtable[i].name,nm); | |
| 242 if(s<0) lo=i+1; | |
| 243 else if(s>0) hi=i-1; | |
| 244 else break; | |
| 245 } | |
| 246 if(s) { | |
| 247 i=(s<0?i+1:i); | |
| 248 if(symcounter==NLABELS) { | |
| 249 fprintf(stderr,"Sorry, no storage for symbols!!!"); | |
| 250 exit(4); | |
| 251 } | |
| 252 for(j=symcounter;j>i;j--) symtable[j]=symtable[j-1]; | |
| 253 symcounter++; | |
| 254 strcpy(symtable[i].name,nm); | |
| 255 symtable[i].cat=13; | |
| 256 } | |
| 257 return symtable+i; | |
| 258 } | |
| 259 | |
| 260 FILE *listfile,*objfile; | |
| 261 char *listname,*objname,*srcname,*curname; | |
| 262 int lineno; | |
| 263 | |
| 264 void | |
| 265 outsymtable() | |
| 266 { | |
| 267 int i,j=0; | |
| 268 fprintf(listfile,"\nSYMBOL TABLE"); | |
| 269 for(i=0;i<symcounter;i++) | |
| 270 if(symtable[i].cat!=13) { | |
| 271 if(j%4==0)fprintf(listfile,"\n"); | |
| 272 fprintf(listfile,"%10s %02d %04x",symtable[i].name,symtable[i].cat, | |
| 273 symtable[i].value); | |
| 274 j++; | |
| 275 } | |
| 276 fprintf(listfile,"\n"); | |
| 277 } | |
| 278 | |
| 279 struct regrecord{char *name;unsigned char tfr,psh;}; | |
| 280 struct regrecord regtable[]= | |
| 281 {{"D",0x00,0x06},{"X",0x01,0x10},{"Y",0x02,0x20}, | |
| 282 {"U",0x03,0x40},{"S",0x04,0x40},{"PC",0x05,0x80}, | |
| 283 {"A",0x08,0x02},{"B",0x09,0x04},{"CC",0x0a,0x01}, | |
| 284 {"CCR",0x0a,0x01},{"DP",0x0b,0x08},{"DPR",0x0b,0x08}}; | |
| 285 | |
| 286 struct regrecord * findreg(char *nm) | |
| 287 { | |
| 288 int i; | |
| 289 for(i=0;i<12;i++) { | |
| 290 if(strcmp(regtable[i].name,nm)==0) return regtable+i; | |
| 291 } | |
| 292 return 0; | |
| 293 } | |
| 294 | |
| 295 | |
| 296 char pass; /* Assembler pass=1 or 2 */ | |
| 297 char listing; /* flag to indicate listing */ | |
| 298 char relocatable; /* flag to indicate relocatable object. */ | |
| 299 char terminate; /* flag to indicate termination. */ | |
| 300 char generating; /* flag to indicate that we generate code */ | |
| 301 unsigned short loccounter,oldlc; /* Location counter */ | |
| 302 | |
| 303 char inpline[128]; /* Current input line (not expanded)*/ | |
| 304 char srcline[128]; /* Current source line */ | |
| 305 char * srcptr; /* Pointer to line being parsed */ | |
| 306 | |
| 307 char unknown; /* flag to indicate value unknown */ | |
| 308 char certain; /* flag to indicate value is certain at pass 1*/ | |
| 309 int error; /* flags indicating errors in current line. */ | |
| 310 int errors; /* number of errors */ | |
| 311 char exprcat; /* category of expression being parsed, eg. | |
| 312 label or constant, this is important when | |
| 313 generating relocatable object code. */ | |
| 314 | |
| 6 | 315 void generate() |
| 316 { | |
| 317 generating = 1; | |
| 318 if (prevloc) { | |
|
7
a6db579d8c11
level 2 rom preparing...
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
6
diff
changeset
|
319 oldlc = loccounter = prevloc-1 ; |
| 25 | 320 os9 = prevloc = 0; |
| 6 | 321 } |
| 322 } | |
| 323 | |
| 0 | 324 |
| 325 char namebuf[MAXIDLEN+1]; | |
| 326 | |
| 327 void | |
| 328 err(int er) { | |
| 329 error |= er ; | |
| 330 } | |
| 331 | |
| 332 void | |
| 333 scanname() | |
| 334 { | |
| 335 int i=0; | |
| 336 char c; | |
| 337 while(1) { | |
| 338 c=*srcptr++; | |
| 339 if(c>='a'&&c<='z')c-=32; | |
| 340 if(c!='.'&&c!='$'&&(c<'0'||c>'9')&&(c<'A'||c>'Z'))break; | |
| 341 if(i<MAXIDLEN)namebuf[i++]=c; | |
| 342 } | |
| 343 namebuf[i]=0; | |
| 344 srcptr--; | |
| 345 } | |
| 346 | |
| 347 void | |
| 348 skipspace() | |
| 349 { | |
| 350 char c; | |
| 351 do { | |
| 352 c=*srcptr++; | |
| 353 } while(c==' '||c=='\t'); | |
| 354 srcptr--; | |
| 355 } | |
| 356 | |
| 357 short scanexpr(int); | |
| 358 | |
| 359 short scandecimal() | |
| 360 { | |
| 361 char c; | |
| 362 short t=0; | |
| 363 c=*srcptr++; | |
| 364 while(isdigit(c)) { | |
| 365 t=t*10+c-'0'; | |
| 366 c=*srcptr++; | |
| 367 } | |
| 368 srcptr--; | |
| 369 return t; | |
| 370 } | |
| 371 | |
| 372 short scanhex() | |
| 373 { | |
| 374 short t=0,i=0; | |
| 375 srcptr++; | |
| 376 scanname(); | |
| 377 while(namebuf[i]>='0'&&namebuf[i]<='F') { | |
| 378 t=t*16+namebuf[i]-'0'; | |
| 379 if(namebuf[i]>'9')t-=7; | |
| 380 i++; | |
| 381 } | |
| 382 if(i==0)error|=1; | |
| 383 return t; | |
| 384 } | |
| 385 | |
| 386 short scanchar() | |
| 387 { | |
| 388 short t; | |
| 389 srcptr++; | |
| 390 t=*srcptr; | |
| 391 if(t)srcptr++; | |
| 392 if (*srcptr=='\'')srcptr++; | |
| 393 return t; | |
| 394 } | |
| 395 | |
| 396 short scanbin() | |
| 397 { | |
| 398 char c; | |
| 399 short t=0; | |
| 400 srcptr++; | |
| 401 c=*srcptr++; | |
| 402 while(c=='0'||c=='1') { | |
| 403 t=t*2+c-'0'; | |
| 404 c=*srcptr++; | |
| 405 } | |
| 406 srcptr--; | |
| 407 return t; | |
| 408 } | |
| 409 | |
| 410 short scanoct() | |
| 411 { | |
| 412 char c; | |
| 413 short t=0; | |
| 414 srcptr++; | |
| 415 c=*srcptr++; | |
| 416 while(c>='0'&&c<='7') { | |
| 417 t=t*8+c-'0'; | |
| 418 c=*srcptr++; | |
| 419 } | |
| 420 srcptr--; | |
| 421 return t; | |
| 422 } | |
| 423 | |
| 424 | |
| 425 short scanlabel() | |
| 426 { | |
| 427 struct symrecord * p; | |
| 428 scanname(); | |
| 429 p=findsym(namebuf); | |
| 430 if(p->cat==13) { | |
| 431 p->cat=6; | |
| 432 p->value=0; | |
| 433 } | |
| 434 if(p->cat==9||p->cat==11)error|=1; | |
| 435 exprcat=p->cat&14; | |
| 436 if(exprcat==6||exprcat==10)unknown=1; | |
| 437 if(((exprcat==2||exprcat==8) | |
| 438 && (unsigned short)(p->value)>(unsigned short)loccounter)|| | |
| 439 exprcat==4) | |
| 440 certain=0; | |
| 441 if(exprcat==8||exprcat==6||exprcat==10)exprcat=2; | |
| 442 return p->value; | |
| 443 } | |
| 444 | |
| 445 | |
| 446 short scanfactor() | |
| 447 { | |
| 448 char c; | |
| 449 short t; | |
| 450 skipspace(); | |
| 451 c=*srcptr; | |
| 452 if(isalpha(c))return scanlabel(); | |
| 453 else if(isdigit(c))return scandecimal(); | |
| 454 else switch(c) { | |
| 11 | 455 case '*' : if(prevloc) { srcptr++;exprcat|=2;return prevloc-1; } |
| 456 case '.' : srcptr++;exprcat|=2;return loccounter; | |
| 0 | 457 case '$' : return scanhex(); |
| 458 case '%' : return scanbin(); | |
| 459 case '&' : /* compatibility */ | |
| 460 case '@' : return scanoct(); | |
| 461 case '\'' : return scanchar(); | |
| 462 case '(' : srcptr++;t=scanexpr(0);skipspace(); | |
| 463 if(*srcptr==')')srcptr++;else error|=1; | |
| 464 return t; | |
| 465 case '-' : srcptr++;exprcat^=32;return -scanfactor(); | |
| 466 case '+' : srcptr++;return scanfactor(); | |
| 467 case '!' : srcptr++;exprcat|=16;return !scanfactor(); | |
| 468 case '^' : | |
| 469 case '~' : srcptr++;exprcat|=16;return ~scanfactor(); | |
| 470 } | |
| 471 error|=1; | |
| 472 return 0; | |
| 473 } | |
| 474 | |
| 475 #define EXITEVAL {srcptr--;return t;} | |
| 476 | |
| 477 #define RESOLVECAT if((oldcat&15)==0)oldcat=0;\ | |
| 478 if((exprcat&15)==0)exprcat=0;\ | |
| 479 if((exprcat==2&&oldcat==34)||(exprcat==34&&oldcat==2)) {\ | |
| 480 exprcat=0;\ | |
| 481 oldcat=0;}\ | |
| 482 exprcat|=oldcat;\ | |
| 483 /* resolve such cases as constant added to address or difference between | |
| 484 two addresses in same module */ | |
| 485 | |
| 486 | |
| 487 short scanexpr(int level) /* This is what you call _recursive_ descent!!!*/ | |
| 488 { | |
| 489 short t,u; | |
| 490 char oldcat,c; | |
| 491 exprcat=0; | |
| 492 if(level==10)return scanfactor(); | |
| 493 t=scanexpr(level+1); | |
| 494 while(1) { | |
| 5 | 495 // skipspace(); |
| 0 | 496 c=*srcptr++; |
| 497 switch(c) { | |
| 498 case '*':oldcat=exprcat; | |
| 499 t*=scanexpr(10); | |
| 500 exprcat|=oldcat|16; | |
| 501 break; | |
| 502 case '/':oldcat=exprcat; | |
| 503 u=scanexpr(10); | |
| 504 if(u)t/=u;else error|=1; | |
| 505 exprcat|=oldcat|16; | |
| 506 break; | |
| 507 case '%':oldcat=exprcat; | |
| 508 u=scanexpr(10); | |
| 509 if(u)t%=u;else error|=1; | |
| 510 exprcat|=oldcat|16; | |
| 511 break; | |
| 512 case '+':if(level==9)EXITEVAL | |
| 513 oldcat=exprcat; | |
| 514 t+=scanexpr(9); | |
| 515 RESOLVECAT | |
| 516 break; | |
| 517 case '-':if(level==9)EXITEVAL | |
| 518 oldcat=exprcat; | |
| 519 t-=scanexpr(9); | |
| 520 exprcat^=32; | |
| 521 RESOLVECAT | |
| 522 break; | |
| 523 case '<':if(*(srcptr)=='<') { | |
| 524 if(level>=8)EXITEVAL | |
| 525 srcptr++; | |
| 526 oldcat=exprcat; | |
| 527 t<<=scanexpr(8); | |
| 528 exprcat|=oldcat|16; | |
| 529 break; | |
| 530 } else if(*(srcptr)=='=') { | |
| 531 if(level>=7)EXITEVAL | |
| 532 srcptr++; | |
| 533 oldcat=exprcat; | |
| 534 t=t<=scanexpr(7); | |
| 535 exprcat|=oldcat|16; | |
| 536 break; | |
| 537 } else { | |
| 538 if(level>=7)EXITEVAL | |
| 539 oldcat=exprcat; | |
| 540 t=t<scanexpr(7); | |
| 541 exprcat|=oldcat|16; | |
| 542 break; | |
| 543 } | |
| 544 case '>':if(*(srcptr)=='>') { | |
| 545 if(level>=8)EXITEVAL | |
| 546 srcptr++; | |
| 547 oldcat=exprcat; | |
| 548 t>>=scanexpr(8); | |
| 549 exprcat|=oldcat|16; | |
| 550 break; | |
| 551 } else if(*(srcptr)=='=') { | |
| 552 if(level>=7)EXITEVAL | |
| 553 srcptr++; | |
| 554 oldcat=exprcat; | |
| 555 t=t>=scanexpr(7); | |
| 556 exprcat|=oldcat|16; | |
| 557 break; | |
| 558 } else { | |
| 559 if(level>=7)EXITEVAL | |
| 560 oldcat=exprcat; | |
| 561 t=t>scanexpr(7); | |
| 562 exprcat|=oldcat|16; | |
| 563 break; | |
| 564 } | |
| 5 | 565 case '!':if(level>=6) { |
| 566 if (*srcptr=='=') { | |
| 567 srcptr++; | |
| 568 oldcat=exprcat; | |
| 569 t=t!=scanexpr(6); | |
| 570 exprcat|=oldcat|16; | |
| 571 } else { | |
| 572 oldcat=exprcat; | |
| 573 t|=scanexpr(6); | |
| 574 exprcat|=oldcat|16; | |
| 575 } | |
| 576 } | |
| 0 | 577 break; |
| 578 case '=':if(level>=6)EXITEVAL | |
| 579 if(*srcptr=='=')srcptr++; | |
| 580 oldcat=exprcat; | |
| 581 t=t==scanexpr(6); | |
| 582 exprcat|=oldcat|16; | |
| 583 break; | |
| 584 case '&':if(level>=5)EXITEVAL | |
| 585 oldcat=exprcat; | |
| 586 t&=scanexpr(5); | |
| 587 exprcat|=oldcat|16; | |
| 588 break; | |
| 589 case '^':if(level>=4)EXITEVAL | |
| 590 oldcat=exprcat; | |
| 591 t^=scanexpr(4); | |
| 592 exprcat|=oldcat|16; | |
| 593 break; | |
| 594 case '|':if(level>=3)EXITEVAL | |
| 595 oldcat=exprcat; | |
| 596 t|=scanexpr(3); | |
| 597 exprcat|=oldcat|16; | |
| 598 default: EXITEVAL | |
| 599 } | |
| 600 } | |
| 601 } | |
| 602 | |
| 603 char mode; /* addressing mode 0=immediate,1=direct,2=extended,3=postbyte | |
| 604 4=pcrelative(with postbyte) 5=indirect 6=pcrel&indirect*/ | |
| 605 char opsize; /*desired operand size 0=dunno,1=5,2=8,3=16*/ | |
| 606 short operand; | |
| 607 unsigned char postbyte; | |
| 608 | |
| 609 int dpsetting; | |
| 610 | |
| 611 | |
| 612 int scanindexreg() | |
| 613 { | |
| 614 char c; | |
| 615 c=*srcptr; | |
| 616 if(islower(c))c-=32; | |
| 617 if (debug) fprintf(stderr,"DEBUG: scanindexreg: indexreg=%d, mode=%d, opsize=%d, error=%d, postbyte=%02X\n",c,mode,opsize,error,postbyte); | |
| 618 switch(c) { | |
| 619 case 'X':return 1; | |
| 620 case 'Y':postbyte|=0x20;return 1; | |
| 621 case 'U':postbyte|=0x40;return 1; | |
| 622 case 'S':postbyte|=0x60;return 1; | |
| 623 default: return 0; | |
| 624 } | |
| 625 } | |
| 626 | |
| 627 void | |
| 628 set3() | |
| 629 { | |
| 630 if(mode<3)mode=3; | |
| 631 } | |
| 632 | |
| 633 void | |
| 634 scanspecial() | |
| 635 { | |
| 636 set3(); | |
| 637 skipspace(); | |
| 638 if(*srcptr=='-') { | |
| 639 srcptr++; | |
| 640 if(*srcptr=='-') { | |
| 641 srcptr++; | |
| 642 postbyte=0x83; | |
| 643 } else postbyte=0x82; | |
| 644 if(!scanindexreg())error|=2;else srcptr++; | |
| 645 } else { | |
| 646 postbyte=0x80; | |
| 647 if(!scanindexreg())error|=2;else srcptr++; | |
| 648 if(*srcptr=='+') { | |
| 649 srcptr++; | |
| 650 if(*srcptr=='+') { | |
| 651 srcptr++; | |
| 652 postbyte+=1; | |
| 653 } | |
| 654 } else postbyte+=4; | |
| 655 } | |
| 656 } | |
| 657 | |
| 658 void | |
| 659 scanindexed() | |
| 660 { | |
| 661 set3(); | |
| 662 postbyte=0; | |
| 663 if(scanindexreg()) { | |
| 664 srcptr++; | |
| 665 if(opsize==0) { | |
| 666 if(unknown||!certain)opsize=3; | |
| 667 else if(operand>=-16&&operand<16&&mode==3)opsize=1; | |
| 668 else if(operand>=-128&&operand<128)opsize=2; | |
| 669 else opsize=3; | |
| 670 } | |
| 671 switch(opsize) { | |
| 672 case 1:postbyte+=(operand&31);opsize=0;break; | |
| 673 case 2:postbyte+=0x88;break; | |
| 674 case 3:postbyte+=0x89;break; | |
| 675 } | |
| 676 } else { /*pc relative*/ | |
| 677 if(toupper(*srcptr)!='P')error|=2; | |
| 678 else { | |
| 679 srcptr++; | |
| 680 if(toupper(*srcptr)!='C')error|=2; | |
| 681 else { | |
| 682 srcptr++; | |
| 683 if(toupper(*srcptr)=='R')srcptr++; | |
| 684 } | |
| 685 } | |
| 686 mode++;postbyte+=0x8c; | |
| 687 if(opsize==1)opsize=2; | |
| 688 } | |
| 689 } | |
| 690 | |
| 691 #define RESTORE {srcptr=oldsrcptr;c=*srcptr;goto dodefault;} | |
| 692 | |
| 693 void | |
| 694 scanoperands() | |
| 695 { | |
| 696 char c,d,*oldsrcptr; | |
| 697 unknown=0; | |
| 698 opsize=0; | |
| 699 certain=1; | |
| 700 skipspace(); | |
| 701 c=*srcptr; | |
| 702 mode=0; | |
| 703 if(c=='[') { | |
| 704 srcptr++; | |
| 705 c=*srcptr; | |
| 706 mode=5; | |
| 707 } | |
| 708 if (debug) fprintf(stderr,"DEBUG: scanoperands: c=%c (%02X)\n",c,c); | |
| 709 switch(c) { | |
| 710 case 'D': case 'd': | |
| 711 oldsrcptr=srcptr; | |
| 712 srcptr++; | |
| 713 skipspace(); | |
| 714 if(*srcptr!=',')RESTORE else { | |
| 715 postbyte=0x8b; | |
| 716 srcptr++; | |
| 717 if(!scanindexreg())RESTORE else {srcptr++;set3();} | |
| 718 } | |
| 719 break; | |
| 720 case 'A': case 'a': | |
| 721 oldsrcptr=srcptr; | |
| 722 srcptr++; | |
| 723 skipspace(); | |
| 724 if(*srcptr!=',')RESTORE else { | |
| 725 postbyte=0x86; | |
| 726 srcptr++; | |
| 727 if(!scanindexreg())RESTORE else {srcptr++;set3();} | |
| 728 } | |
| 729 break; | |
| 730 case 'B': case 'b': | |
| 731 oldsrcptr=srcptr; | |
| 732 srcptr++; | |
| 733 skipspace(); | |
| 734 if(*srcptr!=',')RESTORE else { | |
| 735 postbyte=0x85; | |
| 736 srcptr++; | |
| 737 if (debug) fprintf(stderr,"DEBUG: scanoperands: breg preindex: c=%c (%02X)\n",*srcptr,*srcptr); | |
| 738 if(!scanindexreg())RESTORE else {srcptr++;set3();} | |
| 739 if (debug) fprintf(stderr,"DEBUG: scanoperands: breg: postindex c=%c (%02X)\n",*srcptr,*srcptr); | |
| 740 } | |
| 741 break; | |
| 742 case ',': | |
| 743 srcptr++; | |
| 744 scanspecial(); | |
| 745 break; | |
| 746 case '#': | |
| 747 if(mode==5)error|=2;else mode=0; | |
| 748 srcptr++; | |
| 5 | 749 if (*srcptr=='"') { |
| 750 operand = (srcptr[1]<<8) + srcptr[2] ; | |
| 751 srcptr += 3; | |
| 752 break; | |
| 753 } | |
| 0 | 754 operand=scanexpr(0); |
| 755 break; | |
| 756 case '<': | |
| 757 srcptr++; | |
| 758 if(*srcptr=='<') { | |
| 759 srcptr++; | |
| 760 opsize=1; | |
| 761 } else opsize=2; | |
| 762 goto dodefault; | |
| 763 case '>': | |
| 764 srcptr++; | |
| 765 opsize=3; | |
| 766 default: dodefault: | |
| 767 operand=scanexpr(0); | |
| 768 skipspace(); | |
| 769 if(*srcptr==',') { | |
| 770 srcptr++; | |
| 771 scanindexed(); | |
| 772 } else { | |
| 773 if(opsize==0) { | |
| 774 if(unknown||!certain||dpsetting==-1|| | |
| 775 (unsigned short)(operand-dpsetting*256)>=256) | |
| 776 opsize=3; else opsize=2; | |
| 777 } | |
| 778 if(opsize==1)opsize=2; | |
| 779 if(mode==5){ | |
| 780 postbyte=0x8f; | |
| 781 opsize=3; | |
| 782 } else mode=opsize-1; | |
| 783 } | |
| 784 } | |
| 785 if (debug) fprintf(stderr,"DEBUG: scanoperands: mode=%d, error=%d, postbyte=%02X\n",mode,error,postbyte); | |
| 786 if(mode>=5) { | |
| 787 skipspace(); | |
| 788 postbyte|=0x10; | |
| 789 if(*srcptr!=']')error|=2;else srcptr++; | |
| 790 } | |
| 791 if(pass==2&&unknown)error|=4; | |
| 792 } | |
| 793 | |
| 794 unsigned char codebuf[128]; | |
| 795 int codeptr; /* byte offset within instruction */ | |
| 796 int suppress; /* 0=no suppress 1=until ENDIF 2=until ELSE 3=until ENDM */ | |
| 797 int ifcount; /* count of nested IFs within suppressed text */ | |
| 798 | |
| 799 unsigned char outmode; /* 0 is binary, 1 is s-records */ | |
| 800 | |
| 801 unsigned short hexaddr; | |
| 802 int hexcount; | |
| 803 unsigned char hexbuffer[16]; | |
| 804 unsigned int chksum; | |
| 805 | |
| 806 extern int os9crc(unsigned char c, int crcp); | |
| 807 int crc; | |
| 808 | |
| 809 void | |
| 810 reset_crc() | |
| 811 { | |
| 812 crc = -1; | |
| 813 } | |
| 814 | |
| 815 | |
| 816 void | |
| 817 flushhex() | |
| 818 { | |
| 819 int i; | |
| 820 if(hexcount){ | |
| 821 fprintf(objfile,"S1%02X%04X",(hexcount+3)&0xff,hexaddr&0xffff); | |
| 822 for(i=0;i<hexcount;i++)fprintf(objfile,"%02X",hexbuffer[i]); | |
| 823 chksum+=(hexaddr&0xff)+((hexaddr>>8)&0xff)+hexcount+3; | |
| 824 fprintf(objfile,"%02X\n",0xff-(chksum&0xff)); | |
| 825 hexaddr+=hexcount; | |
| 826 hexcount=0; | |
| 827 chksum=0; | |
| 828 } | |
| 829 } | |
| 830 | |
| 831 void | |
| 832 outhex(unsigned char x) | |
| 833 { | |
| 834 if(hexcount==16)flushhex(); | |
| 835 hexbuffer[hexcount++]=x; | |
| 836 chksum+=x; | |
| 837 } | |
| 838 | |
| 839 void | |
| 840 outbuffer() | |
| 841 { | |
| 842 int i; | |
| 843 for(i=0;i<codeptr;i++) { | |
| 844 crc = os9crc(codebuf[i],crc); | |
| 845 if(!outmode)fputc(codebuf[i],objfile);else outhex(codebuf[i]); | |
| 846 } | |
| 847 } | |
| 848 | |
| 849 char *errormsg[]={"Error in expression", | |
| 850 "Illegal addressing mode", | |
| 851 "Undefined label", | |
| 852 "Multiple definitions of label", | |
| 853 "Relative branch out of range", | |
| 854 "Missing label", | |
| 855 "","","","","","","","","", | |
| 856 "Illegal mnemonic" | |
| 857 }; | |
| 858 | |
| 859 void | |
| 860 report() | |
| 861 { | |
| 862 int i; | |
| 863 fprintf(stderr,"File %s, line %d:%s\n",curname,lineno,srcline); | |
| 864 for(i=0;i<16;i++) { | |
| 865 if(error&1) { | |
| 866 fprintf(stderr,"%s\n",errormsg[i]); | |
| 867 if(pass==2&&listing)fprintf(listfile,"**** %s\n",errormsg[i]); | |
| 868 } | |
| 869 error>>=1; | |
| 870 } | |
| 5 | 871 error = 0; |
| 0 | 872 errors++; |
| 873 } | |
| 874 | |
| 875 void | |
| 876 outlist() | |
| 877 { | |
| 878 int i; | |
| 879 fprintf(listfile,"%04X: ",oldlc); | |
| 880 for(i=0;i<codeptr&&i<MAXLISTBYTES;i++) | |
| 881 fprintf(listfile,"%02X",codebuf[i]); | |
| 882 for(;i<=MAXLISTBYTES;i++) | |
| 883 fprintf(listfile," "); | |
| 884 fprintf(listfile,"%s\n",srcline); | |
| 885 while(i<codeptr) { | |
| 886 fprintf(listfile,"%04X: ",oldlc + i); | |
| 887 for(int j=0;i<codeptr&&j<MAXLISTBYTES;j++) { | |
| 888 fprintf(listfile,"%02X",codebuf[i]); i++; | |
| 889 } | |
| 890 fprintf(listfile,"\n"); | |
| 891 } | |
| 892 } | |
| 893 | |
| 894 void | |
| 895 setlabel(struct symrecord * lp) | |
| 896 { | |
| 26 | 897 if (prevlp) { |
| 898 struct symrecord *l = prevlp; | |
| 899 prevlp = 0; | |
| 900 setlabel(l); | |
| 901 } | |
| 0 | 902 if(lp) { |
| 903 if(lp->cat!=13&&lp->cat!=6) { | |
| 904 if(lp->cat!=2||lp->value!=loccounter) | |
| 905 error|=8; | |
| 906 } else { | |
| 907 lp->cat=2; | |
| 908 lp->value=loccounter; | |
| 909 } | |
| 910 } | |
| 911 } | |
| 912 | |
| 913 void | |
| 914 putbyte(unsigned char b) | |
| 915 { | |
| 916 codebuf[codeptr++]=b; | |
| 917 } | |
| 918 | |
| 919 void | |
| 920 putword(unsigned short w) | |
| 921 { | |
| 922 codebuf[codeptr++]=w>>8; | |
| 923 codebuf[codeptr++]=w&0x0ff; | |
| 924 } | |
| 925 | |
| 926 void | |
| 927 doaddress() /* assemble the right addressing bytes for an instruction */ | |
| 928 { | |
| 929 int offs; | |
| 930 switch(mode) { | |
| 931 case 0: if(opsize==2)putbyte(operand);else putword(operand);break; | |
| 932 case 1: putbyte(operand);break; | |
| 933 case 2: putword(operand);break; | |
| 934 case 3: case 5: putbyte(postbyte); | |
| 935 switch(opsize) { | |
| 936 case 2: putbyte(operand);break; | |
| 937 case 3: putword(operand); | |
| 938 } | |
| 939 break; | |
| 940 case 4: case 6: offs=(unsigned short)operand-loccounter-codeptr-2; | |
| 941 if(offs<-128||offs>=128||opsize==3||unknown||!certain) { | |
|
12
111e5defb8ab
boot is called, rti failed
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
11
diff
changeset
|
942 if((!unknown)&&opsize==2&&(offs<-128||offs>=128) ) |
|
111e5defb8ab
boot is called, rti failed
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
11
diff
changeset
|
943 error|=16; |
|
111e5defb8ab
boot is called, rti failed
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
11
diff
changeset
|
944 offs--; |
|
111e5defb8ab
boot is called, rti failed
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
11
diff
changeset
|
945 opsize=3; |
|
111e5defb8ab
boot is called, rti failed
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
11
diff
changeset
|
946 postbyte++; |
| 0 | 947 } |
| 948 putbyte(postbyte); | |
| 949 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); | |
| 950 if(opsize==3)putword(offs); | |
| 951 else putbyte(offs); | |
| 952 } | |
| 953 } | |
| 954 | |
| 955 void | |
| 956 onebyte(int co) | |
| 957 { | |
| 958 putbyte(co); | |
| 959 } | |
| 960 | |
| 961 void | |
| 962 twobyte(int co) | |
| 963 { | |
| 964 putword(co); | |
| 965 } | |
| 966 | |
| 967 void | |
| 968 oneimm(int co) | |
| 969 { | |
| 970 scanoperands(); | |
| 5 | 971 if(mode>=3) |
| 972 error|=2; | |
| 0 | 973 putbyte(co); |
| 974 putbyte(operand); | |
| 975 } | |
| 976 | |
| 977 void | |
| 978 lea(int co) | |
| 979 { | |
| 980 putbyte(co); | |
| 981 scanoperands(); | |
| 982 if(mode==0) error|=2; | |
| 983 if(mode<3) { | |
| 984 opsize=3; | |
| 985 postbyte=0x8f; | |
| 986 mode=3; | |
| 987 } | |
| 988 if (debug) fprintf(stderr,"DEBUG: lea: mode=%d, opsize=%d, error=%d, postbyte=%02X, *src=%c\n",mode,opsize,error,postbyte,*srcptr); | |
| 989 doaddress(); | |
| 990 } | |
| 991 | |
| 992 void | |
| 993 sbranch(int co) | |
| 994 { | |
| 995 int offs; | |
| 996 scanoperands(); | |
| 997 if(mode!=1&&mode!=2)error|=2; | |
| 998 offs=(unsigned short)operand-loccounter-2; | |
| 999 if(!unknown&&(offs<-128||offs>=128))error|=16; | |
| 1000 if(pass==2&&unknown)error|=4; | |
| 1001 putbyte(co); | |
| 1002 putbyte(offs); | |
| 1003 } | |
| 1004 | |
| 1005 void | |
| 1006 lbra(int co) | |
| 1007 { | |
| 1008 scanoperands(); | |
| 1009 if(mode!=1&&mode!=2)error|=2; | |
| 1010 putbyte(co); | |
| 1011 putword(operand-loccounter-3); | |
| 1012 } | |
| 1013 | |
| 1014 void | |
| 1015 lbranch(int co) | |
| 1016 { | |
| 1017 scanoperands(); | |
| 1018 if(mode!=1&&mode!=2)error|=2; | |
| 1019 putword(co); | |
| 1020 putword(operand-loccounter-4); | |
| 1021 } | |
| 1022 | |
| 1023 void | |
| 1024 arith(int co) | |
| 1025 { | |
| 1026 scanoperands(); | |
| 1027 switch(mode) { | |
| 1028 case 0:opsize=2;putbyte(co);break; | |
| 1029 case 1:putbyte(co+0x010);break; | |
| 1030 case 2:putbyte(co+0x030);break; | |
| 1031 default:putbyte(co+0x020); | |
| 1032 } | |
| 1033 doaddress(); | |
| 1034 } | |
| 1035 | |
| 1036 void | |
| 1037 darith(int co) | |
| 1038 { | |
| 1039 scanoperands(); | |
| 1040 switch(mode) { | |
| 1041 case 0:opsize=3;putbyte(co);break; | |
| 1042 case 1:putbyte(co+0x010);break; | |
| 1043 case 2:putbyte(co+0x030);break; | |
| 1044 default:putbyte(co+0x020); | |
| 1045 } | |
| 1046 doaddress(); | |
| 1047 } | |
| 1048 | |
| 1049 void | |
| 1050 d2arith(int co) | |
| 1051 { | |
| 1052 scanoperands(); | |
| 1053 switch(mode) { | |
| 1054 case 0:opsize=3;putword(co);break; | |
| 1055 case 1:putword(co+0x010);break; | |
| 1056 case 2:putword(co+0x030);break; | |
| 1057 default:putword(co+0x020); | |
| 1058 } | |
| 1059 doaddress(); | |
| 1060 } | |
| 1061 | |
| 1062 void | |
| 1063 oneaddr(int co) | |
| 1064 { | |
| 1065 scanoperands(); | |
| 1066 switch(mode) { | |
| 1067 case 0: error|=2;break; | |
| 1068 case 1: putbyte(co);break; | |
| 1069 case 2: putbyte(co+0x70);break; | |
| 1070 default: putbyte(co+0x60);break; | |
| 1071 } | |
| 1072 doaddress(); | |
| 1073 } | |
| 1074 | |
| 1075 void | |
| 1076 tfrexg(int co) | |
| 1077 { | |
| 1078 struct regrecord * p; | |
| 1079 putbyte(co); | |
| 1080 skipspace(); | |
| 1081 scanname(); | |
| 1082 if((p=findreg(namebuf))==0)error|=2; | |
| 1083 else postbyte=(p->tfr)<<4; | |
| 1084 skipspace(); | |
| 1085 if(*srcptr==',')srcptr++;else error|=2; | |
| 1086 skipspace(); | |
| 1087 scanname(); | |
| 1088 if((p=findreg(namebuf))==0)error|=2; | |
| 1089 else postbyte|=p->tfr; | |
| 1090 putbyte(postbyte); | |
| 1091 } | |
| 1092 | |
| 1093 void | |
| 1094 pshpul(int co) | |
| 1095 { | |
| 1096 struct regrecord *p; | |
| 1097 putbyte(co); | |
| 1098 postbyte=0; | |
| 1099 do { | |
| 1100 if(*srcptr==',')srcptr++; | |
| 1101 skipspace(); | |
| 1102 scanname(); | |
| 1103 if((p=findreg(namebuf))==0)error|=2; | |
| 1104 else postbyte|=p->psh; | |
| 1105 skipspace(); | |
| 1106 }while (*srcptr==','); | |
| 1107 putbyte(postbyte); | |
| 1108 } | |
| 1109 | |
| 1110 void | |
| 1111 skipComma() | |
| 1112 { | |
| 1113 while(*srcptr && *srcptr!='\n' && *srcptr!=',')srcptr++; | |
| 1114 if (*srcptr==',') { | |
| 1115 srcptr++; | |
| 1116 } else { | |
| 1117 error|=1; | |
| 1118 } | |
| 1119 } | |
| 1120 | |
| 1121 int modStart; | |
| 1122 | |
| 1123 void os9begin() | |
| 1124 { | |
| 6 | 1125 generate(); |
| 3 | 1126 os9=1; // contiguous code generation ( i.e. ignore org nor rmb ) |
| 0 | 1127 modStart = loccounter; |
| 1128 reset_crc(); | |
| 1129 putword(0x87cd); | |
| 1130 putword(scanexpr(0)-loccounter); // module size | |
| 1131 skipComma(); | |
| 1132 putword(scanexpr(0)-loccounter); // offset to module name | |
| 1133 skipComma(); | |
| 1134 putbyte(scanexpr(0)); // type / language | |
| 1135 skipComma(); | |
| 1136 putbyte(scanexpr(0)); // attribute | |
| 1137 int parity=0; | |
| 1138 for(int i=0; i< 8; i++) parity^=codebuf[i]; | |
| 1139 putbyte(parity^0xff); // header parity | |
| 1140 skipspace(); | |
| 1141 while (*srcptr==',') { // there are some more | |
| 1142 srcptr++; | |
| 1143 putword(scanexpr(0)); | |
| 1144 skipspace(); | |
| 1145 } | |
| 1146 } | |
| 1147 | |
| 1148 void os9end() | |
| 1149 { | |
| 1150 crc = crc ^ 0xffffff; | |
| 1151 | |
| 1152 putbyte((crc>>16)&0xff); | |
| 1153 putbyte((crc>>8)&0xff); | |
| 1154 putbyte(crc&0xff); | |
| 1155 } | |
| 1156 | |
| 1157 | |
| 1158 void | |
| 1159 pseudoop(int co,struct symrecord * lp) | |
| 1160 { | |
| 1161 int i; | |
| 1162 char c; | |
| 1163 char *fname; | |
| 1164 int locsave; | |
| 1165 | |
| 1166 switch(co) { | |
| 1167 case 0:/* RMB */ | |
| 3 | 1168 // in OS9 mode, this generates no data |
| 1169 // loccounter will be reset after any code to the current code generation | |
| 0 | 1170 setlabel(lp); |
| 1171 operand=scanexpr(0); | |
| 1172 if(unknown)error|=4; | |
| 1173 loccounter+=operand; | |
| 1174 if(generating&&pass==2) { | |
| 6 | 1175 if(!outmode && !os9 ) { |
| 1176 for(i=0;i<operand;i++) { fputc(0,objfile); } | |
| 1177 } else | |
| 1178 flushhex(); | |
| 0 | 1179 } |
| 1180 hexaddr=loccounter; | |
| 1181 break; | |
| 1182 case 5:/* EQU */ | |
| 1183 operand=scanexpr(0); | |
| 1184 if(!lp)error|=32; | |
| 1185 else { | |
| 1186 if(lp->cat==13||lp->cat==6|| | |
| 1187 (lp->value==(unsigned short)operand&&pass==2)) { | |
| 1188 if(exprcat==2)lp->cat=2; | |
| 1189 else lp->cat=0; | |
| 1190 lp->value=operand; | |
| 1191 } else error|=8; | |
| 1192 } | |
| 1193 break; | |
| 1194 case 7:/* FCB */ | |
| 6 | 1195 generate(); |
| 0 | 1196 setlabel(lp); |
| 1197 do { | |
| 1198 if(*srcptr==',')srcptr++; | |
| 1199 skipspace(); | |
| 1200 if(*srcptr=='\"') { | |
| 1201 srcptr++; | |
| 1202 while(*srcptr!='\"'&&*srcptr) | |
| 1203 putbyte(*srcptr++); | |
| 1204 if(*srcptr=='\"')srcptr++; | |
| 1205 } else { | |
| 1206 putbyte(scanexpr(0)); | |
| 1207 if(unknown&&pass==2)error|=4; | |
| 1208 } | |
| 1209 skipspace(); | |
| 1210 } while(*srcptr==','); | |
| 1211 break; | |
| 1212 case 8:/* FCC */ | |
| 6 | 1213 generate(); |
| 0 | 1214 setlabel(lp); |
| 1215 skipspace(); | |
| 1216 c=*srcptr++; | |
| 1217 while(*srcptr!=c&&*srcptr) | |
| 1218 putbyte(*srcptr++); | |
| 1219 if(*srcptr==c)srcptr++; | |
| 1220 break; | |
| 1221 case 9:/* FDB */ | |
| 6 | 1222 generate(); |
| 0 | 1223 setlabel(lp); |
| 1224 do { | |
| 1225 if(*srcptr==',')srcptr++; | |
| 1226 skipspace(); | |
| 1227 putword(scanexpr(0)); | |
| 1228 if(unknown&&pass==2)error|=4; | |
| 1229 skipspace(); | |
| 1230 } while(*srcptr==','); | |
| 1231 break; | |
| 1232 case 23 :/* FCS */ | |
| 6 | 1233 generate(); |
| 0 | 1234 setlabel(lp); |
| 1235 skipspace(); | |
| 1236 int sep = *srcptr; | |
| 1237 if(sep=='\"' || sep=='/') { | |
| 1238 srcptr++; | |
| 1239 while(*srcptr!=sep&&*srcptr) | |
| 1240 putbyte(*srcptr++); | |
| 1241 if(*srcptr==sep)srcptr++; | |
| 1242 codebuf[codeptr-1] |= 0x80; // os9 string termination | |
| 1243 } | |
| 1244 break; | |
| 1245 case 1: /* ELSE */ | |
| 1246 suppress=1; | |
| 1247 break; | |
| 1248 case 21: /* IFP1 */ | |
| 1249 if(pass==2)suppress=2; | |
| 1250 break; | |
| 1251 case 29: /* IFGT */ | |
| 1252 operand=scanexpr(0); | |
| 1253 if(unknown)error|=4; | |
| 1254 if(operand>0)suppress=2; | |
| 1255 break; | |
| 1256 case 31: /* IFLT */ | |
| 1257 operand=scanexpr(0); | |
| 1258 if(unknown)error|=4; | |
| 1259 if(operand<0)suppress=2; | |
| 1260 break; | |
| 3 | 1261 case 30: /* IFEQ */ |
| 0 | 1262 operand=scanexpr(0); |
| 1263 if(unknown)error|=4; | |
| 1264 if(operand==0)suppress=2; | |
| 1265 break; | |
| 3 | 1266 case 28: /* IFNE */ |
| 0 | 1267 case 10: /* IF */ |
| 1268 operand=scanexpr(0); | |
| 1269 if(unknown)error|=4; | |
| 1270 if(!operand)suppress=2; | |
| 1271 break; | |
| 1272 case 12: /* ORG */ | |
| 1273 operand=scanexpr(0); | |
| 1274 if(unknown)error|=4; | |
| 3 | 1275 if(generating&&pass==2&&!outmode&&!os9) { |
| 0 | 1276 for(i=0;i<(unsigned short)operand-loccounter;i++) |
| 3 | 1277 fputc(0,objfile); |
| 1278 } else flushhex(); | |
| 0 | 1279 loccounter=operand; |
| 1280 hexaddr=loccounter; | |
| 1281 break; | |
| 1282 case 14: /* SETDP */ | |
| 1283 operand=scanexpr(0); | |
| 1284 if(unknown)error|=4; | |
| 1285 if(!(operand&255))operand=(unsigned short)operand>>8; | |
| 1286 if((unsigned)operand>255)operand=-1; | |
| 1287 dpsetting=operand; | |
| 1288 break; | |
| 1289 case 15: /* SET */ | |
| 1290 operand=scanexpr(0); | |
| 1291 if(!lp)error|=32; | |
| 1292 else { | |
| 1293 if(lp->cat&1||lp->cat==6) { | |
| 1294 if(exprcat==2)lp->cat=3; | |
| 1295 else lp->cat=1; | |
| 1296 lp->value=operand; | |
| 1297 } else error|=8; | |
| 1298 } | |
| 1299 break; | |
| 1300 case 2: /* END */ | |
| 1301 terminate=1; | |
| 1302 break; | |
| 1303 case 27: /* USE */ | |
| 6 | 1304 // locsave = loccounter ; |
| 0 | 1305 case 16: /* INCLUDE */ |
| 1306 skipspace(); | |
| 1307 if(*srcptr=='"')srcptr++; | |
| 1308 i = 0; | |
| 1309 for(i=0; !(srcptr[i]==0||srcptr[i]=='"'); i++); | |
| 1310 int len = i; | |
| 1311 fname = calloc(1,len); | |
| 1312 for(i=0;i<len;i++) { | |
| 1313 if(*srcptr==0||*srcptr=='"')break; | |
| 1314 fname[i]=*srcptr++; | |
| 1315 } | |
| 1316 fname[i]=0; | |
| 1317 processfile(fname); | |
| 1318 codeptr=0; | |
| 1319 srcline[0]=0; | |
| 3 | 1320 // if (co==27) loccounter = locsave; |
| 0 | 1321 break; |
| 1322 case 24: /* MOD */ | |
| 6 | 1323 oldlc = loccounter = 0; |
| 0 | 1324 setlabel(lp); |
| 1325 os9begin(); | |
| 1326 break; | |
| 1327 case 25: /* EMOD */ | |
| 1328 os9end(); | |
| 1329 break; | |
| 1330 case 32: /* OS9 */ | |
| 6 | 1331 generate(); |
| 0 | 1332 setlabel(lp); |
| 3 | 1333 putword(0x103f); // SWI2 |
| 0 | 1334 putbyte(scanexpr(0)); |
| 15 | 1335 if(unknown&&pass==2)error|=4; |
| 0 | 1336 break; |
| 1337 case 18: /* TTL */ | |
| 1338 break; | |
| 1339 case 19: /* OPT */ | |
| 1340 case 26: /* NAM */ | |
| 1341 case 20: /* PAG */ | |
| 1342 case 3: /* ENDIF/ENDC */ | |
| 1343 break; | |
| 1344 } | |
| 1345 } | |
| 1346 | |
| 1347 | |
| 1348 void | |
| 1349 processline() | |
| 1350 { | |
| 1351 struct symrecord * lp; | |
| 1352 struct oprecord * op; | |
| 1353 int co; | |
| 1354 char c; | |
| 1355 srcptr=srcline; | |
| 1356 oldlc=loccounter; | |
| 5 | 1357 // error=0; |
| 0 | 1358 unknown=0;certain=1; |
| 1359 lp=0; | |
| 1360 codeptr=0; | |
| 1361 if(isalnum(*srcptr)) { | |
| 1362 scanname();lp=findsym(namebuf); | |
| 1363 if(*srcptr==':') srcptr++; | |
| 26 | 1364 if(lp && pass==2) { |
| 1365 oldlc = lp->value; | |
| 1366 } | |
| 0 | 1367 } |
| 1368 skipspace(); | |
| 1369 if(isalnum(*srcptr)) { | |
| 1370 scanname(); | |
| 1371 op=findop(namebuf); | |
| 1372 if(op) { | |
| 1373 if(op->cat!=13){ | |
| 6 | 1374 generate(); |
| 0 | 1375 setlabel(lp); |
| 1376 } | |
| 1377 co=op->code; | |
| 1378 switch(op->cat) { | |
| 1379 case 0:onebyte(co);break; | |
| 1380 case 1:twobyte(co);break; | |
| 1381 case 2:oneimm(co);break; | |
| 1382 case 3:lea(co);break; | |
| 1383 case 4:sbranch(co);break; | |
| 1384 case 5:lbranch(co);break; | |
| 1385 case 6:lbra(co);break; | |
| 1386 case 7:arith(co);break; | |
| 1387 case 8:darith(co);break; | |
| 1388 case 9:d2arith(co);break; | |
| 1389 case 10:oneaddr(co);break; | |
| 1390 case 11:tfrexg(co);break; | |
| 1391 case 12:pshpul(co);break; | |
| 1392 case 13:pseudoop(co,lp); | |
| 1393 } | |
| 1394 c=*srcptr; | |
| 1395 if (debug) fprintf(stderr,"DEBUG: processline: mode=%d, opsize=%d, error=%d, postbyte=%02X c=%c\n",mode,opsize,error,postbyte,c); | |
| 1396 if(c!=' '&&*(srcptr-1)!=' '&&c!=0&&c!=';')error|=2; | |
| 1397 } | |
| 1398 else error|=0x8000; | |
| 26 | 1399 } else { |
| 1400 prevlp = lp; // os9 mode label can be data or code | |
| 1401 } | |
| 0 | 1402 if(pass==2) { |
| 1403 outbuffer(); | |
| 1404 if(listing)outlist(); | |
| 1405 } | |
| 1406 if(error)report(); | |
| 1407 loccounter+=codeptr; | |
| 25 | 1408 if (os9 && prevloc==0 ) { |
| 1409 prevloc = loccounter+1; | |
| 1410 oldlc = loccounter = 0; | |
| 1411 } | |
| 0 | 1412 } |
| 1413 | |
| 1414 void | |
| 1415 suppressline() | |
| 1416 { | |
| 1417 struct oprecord * op; | |
| 1418 srcptr=srcline; | |
| 1419 oldlc=loccounter; | |
| 1420 codeptr=0; | |
| 1421 if(isalnum(*srcptr)) { | |
| 1422 scanname(); | |
| 1423 if(*srcptr==':')srcptr++; | |
| 1424 } | |
| 1425 skipspace(); | |
| 1426 scanname();op=findop(namebuf); | |
| 1427 if(op && op->cat==13) { | |
| 1428 if(op->code==10||op->code==13||op->code==29||op->code==28||op->code==21||op->code==30) ifcount++; | |
| 1429 else if(op->code==3) { | |
| 1430 if(ifcount>0)ifcount--;else if(suppress==1|suppress==2)suppress=0; | |
| 1431 } else if(op->code==1) { | |
| 1432 if(ifcount==0 && suppress==2)suppress=0; | |
| 1433 } | |
| 1434 } | |
| 6 | 1435 if(pass==2&&listing)outlist(); } |
| 0 | 1436 |
| 1437 void | |
| 1438 usage(char*nm) | |
| 1439 { | |
| 1440 fprintf(stderr,"Usage: %s [-o objname] [-l listname] [-s srecord-file] srcname\n",nm); | |
| 1441 exit(2); | |
| 1442 } | |
| 1443 | |
| 1444 char * | |
| 1445 strconcat(char *s,int spos,char *d) | |
| 1446 { | |
| 1447 int slen = strlen(s); | |
| 1448 int dlen = strlen(d); | |
| 1449 if ( spos == 0) spos = slen; | |
| 1450 char *out = calloc(1,spos+dlen+1); | |
| 1451 int i = 0; | |
| 1452 for(; i< spos; i++ ) out[i] = s[i]; | |
| 1453 for(; i< spos+dlen+1; i++ ) out[i] = *d++; | |
| 1454 return out; | |
| 1455 } | |
| 1456 | |
| 1457 | |
| 1458 void | |
| 1459 getoptions(int c,char*v[]) | |
| 1460 { | |
| 6 | 1461 int i=1; |
| 0 | 1462 if(c==1)usage(v[0]); |
| 6 | 1463 while(v[i]) { |
| 1464 if(strcmp(v[i],"-d")==0) { | |
| 1465 debug=1; | |
| 1466 i++; | |
| 1467 } else if(strcmp(v[i],"-o")==0) { | |
| 1468 objname = v[i+1]; | |
| 1469 i+=2; | |
| 1470 } else if(strcmp(v[i],"-s")==0) { | |
| 1471 objname=v[i+1]; | |
| 1472 outmode=1; | |
| 1473 i+=2; | |
| 1474 } else if(strcmp(v[i],"-l")==0) { | |
| 1475 listname=v[i+1]; | |
| 1476 i+=2; | |
| 1477 } else if(*v[i]=='-') { | |
| 1478 usage(v[0]); | |
| 1479 } else { | |
| 1480 if (srcname) usage(v[0]); | |
| 1481 srcname=v[i]; | |
| 1482 i++; | |
| 1483 } | |
| 0 | 1484 } |
| 1485 if(objname==0) { | |
| 1486 for(i=0;srcname[i]!='.' && srcname[i]!=0 ;i++) ; | |
| 1487 objname = strconcat(srcname,i,".b"); | |
| 1488 } | |
| 1489 listing=(listname!=0); | |
| 1490 } | |
| 1491 | |
| 1492 void | |
| 1493 expandline() | |
| 1494 { | |
| 1495 int i=0,j=0,k,j1; | |
| 1496 for(i=0;i<128&&j<128;i++) | |
| 1497 { | |
| 1498 if(inpline[i]=='\n') { | |
| 1499 srcline[j]=0;break; | |
| 1500 } | |
| 1501 if(inpline[i]=='\t') { | |
| 1502 j1=j; | |
| 1503 for(k=0;k<8-j1%8 && j<128;k++)srcline[j++]=' '; | |
| 1504 }else srcline[j++]=inpline[i]; | |
| 1505 } | |
| 1506 srcline[127]=0; | |
| 1507 } | |
| 1508 | |
| 1509 | |
| 1510 void | |
| 1511 processfile(char *name) | |
| 1512 { | |
| 1513 char *oldname; | |
| 1514 int oldno; | |
| 1515 FILE *srcfile; | |
| 1516 oldname=curname; | |
| 1517 curname=name; | |
| 1518 oldno=lineno; | |
| 1519 lineno=0; | |
| 1520 if((srcfile=fopen(name,"r"))==0) { | |
| 6 | 1521 int i = 0; |
| 1522 if (oldname) { | |
| 1523 i = strlen(oldname); | |
| 1524 while(i>0 && oldname[i]!='/') i--; | |
| 1525 } | |
| 0 | 1526 if (i>0) { |
| 1527 char *next = strconcat(oldname,i+1,name); | |
| 1528 if((srcfile=fopen(next,"r"))==0) { | |
| 1529 fprintf(stderr,"Cannot open source file %s\n",next); | |
| 1530 exit(4); | |
| 1531 } | |
| 1532 curname = next; | |
| 1533 } else { | |
| 1534 fprintf(stderr,"Cannot open source file %s\n",name); | |
| 1535 exit(4); | |
| 1536 } | |
| 1537 } | |
| 1538 while(!terminate&&fgets(inpline,128,srcfile)) { | |
| 1539 expandline(); | |
| 1540 lineno++; | |
| 1541 srcptr=srcline; | |
| 1542 if(suppress)suppressline(); else processline(); | |
| 1543 } | |
| 26 | 1544 setlabel(0); // process prevlp |
| 0 | 1545 fclose(srcfile); |
| 1546 if(suppress) { | |
| 1547 fprintf(stderr,"improperly nested IF statements in %s",curname); | |
| 1548 errors++; | |
| 1549 suppress=0; | |
| 1550 } | |
| 1551 lineno=oldno; | |
| 1552 curname=oldname; | |
| 1553 } | |
| 1554 | |
| 1555 int | |
| 1556 main(int argc,char *argv[]) | |
| 1557 { | |
| 1558 char c; | |
| 1559 getoptions(argc,argv); | |
| 1560 pass=1; | |
| 1561 errors=0; | |
| 1562 generating=0; | |
| 1563 terminate=0; | |
| 1564 processfile(srcname); | |
| 1565 if(errors) { | |
| 1566 fprintf(stderr,"%d Pass 1 Errors, Continue?",errors); | |
| 1567 c=getchar(); | |
| 1568 if(c=='n'||c=='N') exit(3); | |
| 1569 } | |
| 1570 pass=2; | |
| 6 | 1571 prevloc = 0; |
| 0 | 1572 loccounter=0; |
| 1573 errors=0; | |
| 1574 generating=0; | |
| 1575 terminate=0; | |
| 1576 if(listing&&((listfile=fopen(listname,"w"))==0)) { | |
| 1577 fprintf(stderr,"Cannot open list file"); | |
| 1578 exit(4); | |
| 1579 } | |
| 1580 if((objfile=fopen(objname,outmode?"w":"wb"))==0) { | |
| 1581 fprintf(stderr,"Cannot write object file\n"); | |
| 1582 exit(4); | |
| 1583 } | |
| 1584 processfile(srcname); | |
| 1585 fprintf(stderr,"%d Pass 2 errors.\n",errors); | |
| 1586 if(listing) { | |
| 1587 fprintf(listfile,"%d Pass 2 errors.\n",errors); | |
| 1588 outsymtable(); | |
| 1589 fclose(listfile); | |
| 1590 } | |
| 1591 if(outmode){ | |
| 1592 flushhex(); | |
| 1593 fprintf(objfile,"S9030000FC\n"); | |
| 1594 } | |
| 1595 fclose(objfile); | |
| 1596 return 0; | |
| 1597 } | |
| 1598 |