Mercurial > hg > Members > kono > os9 > sbc09
annotate src/a09.c @ 71:eb9be32c701c
fix leval
| author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Sun, 05 Aug 2018 22:17:44 +0900 |
| parents | 2088fd998865 |
| children | 82d03e816deb |
| rev | line source |
|---|---|
| 33 | 1 /* A09, 6809 Assembler2 |
| 0 | 2 |
| 3 created 1993,1994 by L.C. Benschop. | |
| 4 copyleft (c) 1994-2014 by the sbc09 team, see AUTHORS for more details. | |
| 5 license: GNU General Public License version 2, see LICENSE for more details. | |
| 6 THERE IS NO WARRANTY ON THIS PROGRAM. | |
| 7 | |
| 8 Generates binary image file from the lowest to | |
| 9 the highest address with actually assembled data. | |
| 10 | |
| 5 | 11 Machin edependencies: |
| 0 | 12 char is 8 bits. |
| 13 short is 16 bits. | |
| 14 integer arithmetic is twos complement. | |
| 15 | |
| 16 syntax a09 [-o filename] [-l filename] sourcefile. | |
| 17 | |
| 18 Options | |
| 19 -o filename name of the output file (default name minus a09 suffix) | |
| 20 -s filename name of the s-record output file (default its a binary file) | |
| 21 -l filename list file name (default no listing) | |
| 22 -d enable debugging | |
| 23 | |
| 24 recognized pseudoops: | |
| 25 extern public | |
| 26 macro endm if else endif | |
| 27 org equ set setdp | |
| 28 fcb fcw fdb fcc rmb | |
| 29 end include title | |
| 30 | |
| 31 Not all of these are actually IMPLEMENTED!!!!!! | |
| 32 | |
| 33 Revisions: | |
| 34 1993-11-03 v0.1 | |
| 35 Initial version. | |
| 36 1994/03/21 v0.2 | |
| 37 Fixed PC relative addressing bug | |
| 38 Added SET, SETDP, INCLUDE. IF/ELSE/ENDIF | |
| 39 No macros yet, and no separate linkable modules. | |
| 40 2012-06-04 j at klasek at | |
| 41 New: debugging parameter/option. | |
| 42 Fixed additional possible issue PC relative addressing. | |
| 43 Compatibility: Octal number prefix "&". | |
| 44 2014-07-15 j at klasek at | |
| 45 Fixed usage message. | |
|
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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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assembler and emulator fix
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parents:
26
diff
changeset
|
437 int scanbin() |
| 0 | 438 { |
| 439 char c; | |
|
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3c14d647bb51
assembler and emulator fix
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
26
diff
changeset
|
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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assembler and emulator fix
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
26
diff
changeset
|
451 int scanoct() |
| 0 | 452 { |
| 453 char c; | |
|
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3c14d647bb51
assembler and emulator fix
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
26
diff
changeset
|
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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assembler and emulator fix
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parents:
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diff
changeset
|
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 | |
|
29
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assembler and emulator fix
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
26
diff
changeset
|
487 int scanfactor() |
| 0 | 488 { |
| 489 char c; | |
|
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3c14d647bb51
assembler and emulator fix
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
26
diff
changeset
|
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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3c14d647bb51
assembler and emulator fix
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parents:
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diff
changeset
|
528 int scanexpr(int level) /* This is what you call _recursive_ descent!!!*/ |
| 0 | 529 { |
|
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assembler and emulator fix
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
26
diff
changeset
|
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; |
|
40
b8fa36c04ff7
fix multiple label on empty line
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
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 } | |
|
12
111e5defb8ab
boot is called, rti failed
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
11
diff
changeset
|
987 offs--; |
|
111e5defb8ab
boot is called, rti failed
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
11
diff
changeset
|
988 opsize=3; |
|
111e5defb8ab
boot is called, rti failed
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
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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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parents:
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diff
changeset
|
1185 if(unknown&&pass==2)error|=4; |
| 0 | 1186 skipComma(); |
| 1187 putword(scanexpr(0)-loccounter); // offset to module name | |
|
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boot without disk image
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parents:
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diff
changeset
|
1188 if(unknown&&pass==2)error|=4; |
| 0 | 1189 skipComma(); |
| 1190 putbyte(scanexpr(0)); // type / language | |
|
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boot without disk image
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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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parents:
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changeset
|
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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parents:
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diff
changeset
|
1260 lp->value=oldlc=operand; |
| 38 | 1261 } else // else error|=8; |
|
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fix multiple label on empty line
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
39
diff
changeset
|
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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b8fa36c04ff7
fix multiple label on empty line
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
39
diff
changeset
|
1367 lp->value=oldlc=operand; |
| 38 | 1368 } else // else error|=8; |
|
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b8fa36c04ff7
fix multiple label on empty line
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
39
diff
changeset
|
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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fix multiple label on empty line
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
39
diff
changeset
|
1489 struct symrecord * lp = 0; |
| 0 | 1490 codeptr=0; |
| 1491 if(isalnum(*srcptr)) { | |
|
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fix multiple label on empty line
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
39
diff
changeset
|
1492 scanname();lp=findsym(namebuf); |
|
b8fa36c04ff7
fix multiple label on empty line
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
39
diff
changeset
|
1493 if (lp) oldlc = lp->value; |
| 0 | 1494 if(*srcptr==':')srcptr++; |
| 1495 } | |
| 1496 skipspace(); | |
|
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fix multiple label on empty line
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
39
diff
changeset
|
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; | |
| 71 | 1548 } else if(strcmp(v[i],"-D")==0) { |
| 1549 struct symrecord * p; | |
| 1550 p=findsym(v[i+1]); | |
| 1551 p->value = 1; | |
| 1552 p->cat = 0; | |
| 1553 i+=2; | |
| 33 | 1554 } else if(strcmp(v[i],"-I")==0) { |
| 1555 struct incl *j = (struct incl *)malloc(sizeof(struct incl)); | |
| 1556 j->name = v[i+1]; | |
| 1557 j->next = 0; | |
| 1558 if (!incls) incls = j; | |
| 1559 else { | |
| 1560 struct incl *k=incls ; | |
| 1561 for(; k->next ; k = k->next ) ; | |
| 1562 k->next = j; | |
| 1563 } | |
| 1564 i+=2; | |
| 6 | 1565 } else if(*v[i]=='-') { |
| 1566 usage(v[0]); | |
| 1567 } else { | |
| 1568 if (srcname) usage(v[0]); | |
| 1569 srcname=v[i]; | |
| 1570 i++; | |
| 1571 } | |
| 0 | 1572 } |
| 1573 if(objname==0) { | |
| 1574 for(i=0;srcname[i]!='.' && srcname[i]!=0 ;i++) ; | |
| 1575 objname = strconcat(srcname,i,".b"); | |
| 1576 } | |
| 1577 listing=(listname!=0); | |
| 1578 } | |
| 1579 | |
| 1580 void | |
| 1581 expandline() | |
| 1582 { | |
| 1583 int i=0,j=0,k,j1; | |
| 1584 for(i=0;i<128&&j<128;i++) | |
| 1585 { | |
| 1586 if(inpline[i]=='\n') { | |
| 1587 srcline[j]=0;break; | |
| 1588 } | |
| 1589 if(inpline[i]=='\t') { | |
| 1590 j1=j; | |
| 1591 for(k=0;k<8-j1%8 && j<128;k++)srcline[j++]=' '; | |
| 1592 }else srcline[j++]=inpline[i]; | |
| 1593 } | |
| 1594 srcline[127]=0; | |
| 1595 } | |
| 1596 | |
| 1597 | |
| 1598 void | |
| 1599 processfile(char *name) | |
| 1600 { | |
| 1601 char *oldname; | |
| 1602 int oldno; | |
| 1603 FILE *srcfile; | |
| 1604 oldname=curname; | |
| 1605 curname=name; | |
| 1606 oldno=lineno; | |
| 1607 lineno=0; | |
| 1608 if((srcfile=fopen(name,"r"))==0) { | |
| 6 | 1609 int i = 0; |
| 1610 if (oldname) { | |
| 1611 i = strlen(oldname); | |
| 1612 while(i>0 && oldname[i]!='/') i--; | |
| 1613 } | |
| 0 | 1614 if (i>0) { |
| 1615 char *next = strconcat(oldname,i+1,name); | |
| 33 | 1616 if((srcfile=fopen(next,"r"))!=0) { |
| 1617 curname = next; | |
| 0 | 1618 } |
| 33 | 1619 } |
| 1620 if (!srcfile) { | |
| 1621 for( struct incl *d = incls; d ; d = d->next) { | |
| 1622 char *next = strconcat(d->name,0,name); | |
| 1623 if((srcfile=fopen(next,"r"))!=0) { | |
| 1624 curname = next; | |
| 1625 break; | |
| 1626 } | |
| 1627 } | |
| 1628 } | |
| 1629 } | |
| 1630 if (!srcfile) { | |
| 0 | 1631 fprintf(stderr,"Cannot open source file %s\n",name); |
| 1632 exit(4); | |
| 1633 } | |
| 1634 while(!terminate&&fgets(inpline,128,srcfile)) { | |
| 1635 expandline(); | |
| 33 | 1636 lineno++; glineno++; |
| 0 | 1637 srcptr=srcline; |
|
40
b8fa36c04ff7
fix multiple label on empty line
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
39
diff
changeset
|
1638 if(suppress) |
|
b8fa36c04ff7
fix multiple label on empty line
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
39
diff
changeset
|
1639 suppressline(); |
|
b8fa36c04ff7
fix multiple label on empty line
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
39
diff
changeset
|
1640 else |
|
b8fa36c04ff7
fix multiple label on empty line
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
39
diff
changeset
|
1641 processline(); |
| 0 | 1642 } |
| 26 | 1643 setlabel(0); // process prevlp |
| 0 | 1644 fclose(srcfile); |
| 1645 if(suppress) { | |
| 1646 fprintf(stderr,"improperly nested IF statements in %s",curname); | |
| 1647 errors++; | |
| 1648 suppress=0; | |
| 1649 } | |
| 1650 lineno=oldno; | |
| 1651 curname=oldname; | |
| 1652 } | |
| 1653 | |
| 1654 int | |
| 1655 main(int argc,char *argv[]) | |
| 1656 { | |
| 1657 char c; | |
| 1658 getoptions(argc,argv); | |
| 1659 pass=1; | |
| 1660 errors=0; | |
| 1661 generating=0; | |
| 1662 terminate=0; | |
| 1663 processfile(srcname); | |
| 1664 if(errors) { | |
| 1665 fprintf(stderr,"%d Pass 1 Errors, Continue?",errors); | |
| 1666 c=getchar(); | |
| 1667 if(c=='n'||c=='N') exit(3); | |
| 1668 } | |
| 33 | 1669 do { |
| 0 | 1670 pass=2; |
| 6 | 1671 prevloc = 0; |
| 0 | 1672 loccounter=0; |
| 39 | 1673 rmbcounter=0; |
| 0 | 1674 errors=0; |
| 1675 generating=0; | |
| 1676 terminate=0; | |
| 33 | 1677 glineno=0; |
| 0 | 1678 if(listing&&((listfile=fopen(listname,"w"))==0)) { |
| 1679 fprintf(stderr,"Cannot open list file"); | |
| 1680 exit(4); | |
| 1681 } | |
| 1682 if((objfile=fopen(objname,outmode?"w":"wb"))==0) { | |
| 1683 fprintf(stderr,"Cannot write object file\n"); | |
| 1684 exit(4); | |
| 1685 } | |
| 1686 processfile(srcname); | |
| 1687 fprintf(stderr,"%d Pass 2 errors.\n",errors); | |
| 1688 if(listing) { | |
| 1689 fprintf(listfile,"%d Pass 2 errors.\n",errors); | |
| 1690 outsymtable(); | |
| 1691 fclose(listfile); | |
| 1692 } | |
| 1693 if(outmode){ | |
| 1694 flushhex(); | |
| 1695 fprintf(objfile,"S9030000FC\n"); | |
| 1696 } | |
| 1697 fclose(objfile); | |
| 38 | 1698 } while (longer()); |
| 0 | 1699 return 0; |
| 1700 } | |
| 1701 |