| 1 | /* |
| 2 | * Copyright (c) 1982 Regents of the University of California |
| 3 | */ |
| 4 | #ifndef lint |
| 5 | static char sccsid[] = "@(#)asmain.c 4.11 %G%"; |
| 6 | #endif not lint |
| 7 | |
| 8 | #include <stdio.h> |
| 9 | #include <ctype.h> |
| 10 | #include <signal.h> |
| 11 | |
| 12 | #include "as.h" |
| 13 | #include "assyms.h" |
| 14 | #include "asscan.h" |
| 15 | #include "asexpr.h" |
| 16 | |
| 17 | #ifdef UNIX |
| 18 | #define unix_lang_name "VAX/UNIX Assembler V%G% 4.11" |
| 19 | #endif |
| 20 | |
| 21 | #ifdef VMS |
| 22 | #define vms_lang_name "VAX/VMS C Assembler V1.00" |
| 23 | #endif VMS |
| 24 | |
| 25 | /* |
| 26 | * variables to manage reading the assembly source files |
| 27 | */ |
| 28 | char *dotsname; /*the current file name; managed by the parser*/ |
| 29 | int lineno; /*current line number; managed by the parser*/ |
| 30 | char **innames; /*names of the files being assembled*/ |
| 31 | int ninfiles; /*how many interesting files there are*/ |
| 32 | /* |
| 33 | * Flags settable from the argv process argument list |
| 34 | */ |
| 35 | int silent = 0; /*don't complain about any errors*/ |
| 36 | int savelabels = 0; /*write the labels to the a.out file*/ |
| 37 | int d124 = 4; /*default allocate 4 bytes for unknown pointers*/ |
| 38 | int anyerrs = 0; /*no errors yet*/ |
| 39 | int anywarnings=0; /*no warnings yet*/ |
| 40 | int orgwarn = 0; /*Bad origins*/ |
| 41 | int passno = 1; /* current pass*/ |
| 42 | int jxxxJUMP = 0; /* in jxxxes that branch too far, use jmp instead of brw */ |
| 43 | int readonlydata = 0; /* initialzed data -> text space */ |
| 44 | |
| 45 | int nGHnumbers = 0; /* GH numbers used */ |
| 46 | int nGHopcodes = 0; /* GH opcodes used */ |
| 47 | int nnewopcodes = 0; /* new opcodes used */ |
| 48 | |
| 49 | #ifdef DEBUG |
| 50 | int debug = 0; |
| 51 | int toktrace = 0; |
| 52 | #endif |
| 53 | |
| 54 | int useVM = /*put the temp file in virtual memory*/ |
| 55 | #ifdef VMS |
| 56 | 1; /*VMS has virtual memory (duh)*/ |
| 57 | #endif VMS |
| 58 | #ifdef UNIX |
| 59 | 0; |
| 60 | #endif |
| 61 | |
| 62 | char *endcore; /*where to get more symbol space*/ |
| 63 | |
| 64 | /* |
| 65 | * Managers of the a.out file. |
| 66 | */ |
| 67 | struct exec hdr; |
| 68 | #define MAGIC 0407 |
| 69 | u_long tsize; /* total text size */ |
| 70 | u_long dsize; /* total data size */ |
| 71 | u_long datbase; /* base of the data segment */ |
| 72 | u_long trsize; /* total text relocation size */ |
| 73 | u_long drsize; /* total data relocation size */ |
| 74 | |
| 75 | /* |
| 76 | * Information about the current segment is accumulated in |
| 77 | * usedot; the most important information stored is the |
| 78 | * accumulated size of each of the text and data segments |
| 79 | * |
| 80 | * dotp points to the correct usedot expression for the current segment |
| 81 | */ |
| 82 | struct exp usedot[NLOC+NLOC]; /* info about all segments */ |
| 83 | struct exp *dotp; /* data/text location pointer */ |
| 84 | /* |
| 85 | * The inter pass temporary token file is opened and closed by stdio, but |
| 86 | * is written to using direct read/write, as the temporary file |
| 87 | * is composed of buffers exactly BUFSIZ long. |
| 88 | */ |
| 89 | FILE *tokfile; /* interpass communication file */ |
| 90 | char tokfilename[TNAMESIZE]; |
| 91 | /* |
| 92 | * The string file is the string table |
| 93 | * cat'ed to the end of the built up a.out file |
| 94 | */ |
| 95 | FILE *strfile; /* interpass string file */ |
| 96 | char strfilename[TNAMESIZE]; |
| 97 | int strfilepos = 0; /* position within the string file */ |
| 98 | /* |
| 99 | * a.out is created during the second pass. |
| 100 | * It is opened by stdio, but is filled with the parallel |
| 101 | * block I/O library |
| 102 | */ |
| 103 | char *outfile = "a.out"; |
| 104 | FILE *a_out_file; |
| 105 | off_t a_out_off; /* cumulative offsets for segments */ |
| 106 | /* |
| 107 | * The logical files containing the assembled data for each of |
| 108 | * the text and data segments are |
| 109 | * managed by the parallel block I/O library. |
| 110 | * a.out is logically opened in many places at once to |
| 111 | * receive the assembled data from the various segments as |
| 112 | * it all trickles in, but is physically opened only once |
| 113 | * to minimize file overhead. |
| 114 | */ |
| 115 | BFILE *usefile[NLOC+NLOC]; /* text/data files */ |
| 116 | BFILE *txtfil; /* current text/data file */ |
| 117 | /* |
| 118 | * Relocation information is accumulated seperately for each |
| 119 | * segment. This is required by the old loader (from BTL), |
| 120 | * but not by the new loader (Bill Joy). |
| 121 | * |
| 122 | * However, the size of the relocation information can not be computed |
| 123 | * during or after the 1st pass because the ''absoluteness' of values |
| 124 | * is unknown until all locally declared symbols have been seen. |
| 125 | * Thus, the size of the relocation information is only |
| 126 | * known after the second pass is finished. |
| 127 | * This obviates the use of the block I/O |
| 128 | * library, which requires knowing the exact offsets in a.out. |
| 129 | * |
| 130 | * So, we save the relocation information internally (we don't |
| 131 | * go to internal files to minimize overhead). |
| 132 | * |
| 133 | * Empirically, we studied 259 files composing the system, |
| 134 | * two compilers and a compiler generator: (all of which have |
| 135 | * fairly large source files) |
| 136 | * |
| 137 | * Number of files = 259 |
| 138 | * Number of non zero text reloc files: 233 |
| 139 | * Number of non zero data reloc files: 53 |
| 140 | * Average text relocation = 889 |
| 141 | * Average data relocation = 346 |
| 142 | * Number of files > BUFSIZ text relocation = 71 |
| 143 | * Number of files > BUFSIZ data relocation = 6 |
| 144 | * |
| 145 | * For compiled C code, there is usually one text segment and two |
| 146 | * data segments; we see that allocating our own buffers and |
| 147 | * doing our internal handling of relocation information will, |
| 148 | * on the average, not use more memory than taken up by the buffers |
| 149 | * allocated for doing file I/O in parallel to a number of file. |
| 150 | * |
| 151 | * If we are assembling with the -V option, we |
| 152 | * use the left over token buffers from the 2nd pass, |
| 153 | * otherwise, we create our own. |
| 154 | * |
| 155 | * When the 2nd pass is complete, closeoutrel flushes the token |
| 156 | * buffers out to a BFILE. |
| 157 | * |
| 158 | * The internals to relbufdesc are known only in assyms.c |
| 159 | * |
| 160 | * outrel constructs the relocation information. |
| 161 | * closeoutrel flushes the relocation information to relfil. |
| 162 | */ |
| 163 | struct relbufdesc *rusefile[NLOC+NLOC]; |
| 164 | struct relbufdesc *relfil; /* un concatnated relocation info */ |
| 165 | BFILE *relocfile; /* concatnated relocation info */ |
| 166 | /* |
| 167 | * Once the relocation information has been written, |
| 168 | * we can write out the symbol table using the Block I/O |
| 169 | * mechanisms, as we once again know the offsets into |
| 170 | * the a.out file. |
| 171 | * |
| 172 | * We use relfil to output the symbol table information. |
| 173 | */ |
| 174 | |
| 175 | char *tmpdirprefix = |
| 176 | #ifdef UNIX |
| 177 | "/tmp/"; |
| 178 | #else VMS |
| 179 | "/usr/tmp/"; |
| 180 | #endif |
| 181 | |
| 182 | |
| 183 | int delexit(); |
| 184 | |
| 185 | main(argc, argv) |
| 186 | int argc; |
| 187 | char **argv; |
| 188 | { |
| 189 | char *sbrk(); |
| 190 | |
| 191 | tokfilename[0] = 0; |
| 192 | strfilename[0] = 0; |
| 193 | endcore = sbrk(0); |
| 194 | |
| 195 | argprocess(argc, argv); /* process argument lists */ |
| 196 | if (anyerrs) exit(1); |
| 197 | |
| 198 | initialize(); |
| 199 | zeroorigins(); /* set origins to zero */ |
| 200 | zerolocals(); /* fix local label counters */ |
| 201 | |
| 202 | i_pass1(); /* open temp files, etc */ |
| 203 | pass1(); /* first pass through .s files */ |
| 204 | testlocals(); /* check for undefined locals */ |
| 205 | if (anyerrs) delexit(); |
| 206 | |
| 207 | pass1_5(); /* resolve jxxx */ |
| 208 | if (anyerrs) delexit(); |
| 209 | |
| 210 | open_a_out(); /* open a.out */ |
| 211 | roundsegments(); /* round segments to FW */ |
| 212 | build_hdr(); /* build initial header, and output */ |
| 213 | |
| 214 | i_pass2(); /* reopen temporary file, etc */ |
| 215 | pass2(); /* second pass through the virtual .s */ |
| 216 | if (anyerrs) delexit(); |
| 217 | |
| 218 | fillsegments(); /* fill segments with 0 to FW */ |
| 219 | reloc_syms(); /* dump relocation and symbol table */ |
| 220 | |
| 221 | delete(); /* remove tmp file */ |
| 222 | bflush(); /* close off block I/O view of a.out */ |
| 223 | fix_a_out(); /* add in text and data reloc counts */ |
| 224 | |
| 225 | if (anyerrs == 0 && orgwarn) |
| 226 | yyerror("Caution: absolute origins.\n"); |
| 227 | |
| 228 | if (nGHnumbers) |
| 229 | yywarning("Caution: G or H format floating point numbers"); |
| 230 | if (nGHopcodes) |
| 231 | yywarning("Caution: G or H format floating point operators"); |
| 232 | if (nnewopcodes) |
| 233 | yywarning("Caution: New Opcodes"); |
| 234 | if (nGHnumbers || nGHopcodes || nnewopcodes) |
| 235 | yywarning("These are not defined for all implementations of the VAX architecture.\n"); |
| 236 | |
| 237 | exit(anyerrs != 0); |
| 238 | } /*end of UNIX main*/ |
| 239 | |
| 240 | argprocess(argc, argv) |
| 241 | int argc; |
| 242 | char *argv[]; |
| 243 | { |
| 244 | register char *cp; |
| 245 | |
| 246 | ninfiles = 0; |
| 247 | silent = 0; |
| 248 | #ifdef DEBUG |
| 249 | debug = 0; |
| 250 | #endif |
| 251 | innames = (char **)ClearCalloc(argc+1, sizeof (innames[0])); |
| 252 | dotsname = "<argv error>"; |
| 253 | while (argc > 1) { |
| 254 | if (argv[1][0] != '-') |
| 255 | innames[ninfiles++] = argv[1]; |
| 256 | else { |
| 257 | cp = argv[1] + 1; |
| 258 | /* |
| 259 | * We can throw away single minus signs, so |
| 260 | * that make scripts for the PDP 11 assembler work |
| 261 | * on this assembler too |
| 262 | */ |
| 263 | while (*cp){ |
| 264 | switch(*cp++){ |
| 265 | default: |
| 266 | yyerror("Unknown flag: %c", *--cp); |
| 267 | cp++; |
| 268 | break; |
| 269 | case 'v': |
| 270 | selfwhat(stdout); |
| 271 | exit(1); |
| 272 | case 'd': |
| 273 | d124 = *cp++ - '0'; |
| 274 | if ( (d124 != 1) && (d124 != 2) && |
| 275 | (d124 != 4)){ |
| 276 | yyerror("-d[124] only"); |
| 277 | exit(1); |
| 278 | } |
| 279 | break; |
| 280 | case 'o': |
| 281 | if (argc < 3){ |
| 282 | yyerror("-o what???"); |
| 283 | exit(1); |
| 284 | } |
| 285 | outfile = argv[2]; |
| 286 | bumpone: |
| 287 | argc -= 2; |
| 288 | argv += 2; |
| 289 | goto nextarg; |
| 290 | |
| 291 | case 't': |
| 292 | if (argc < 3){ |
| 293 | yyerror("-t what???"); |
| 294 | exit(1); |
| 295 | } |
| 296 | tmpdirprefix = argv[2]; |
| 297 | goto bumpone; |
| 298 | |
| 299 | case 'V': |
| 300 | useVM = 1; |
| 301 | break; |
| 302 | case 'W': |
| 303 | silent = 1; |
| 304 | break; |
| 305 | case 'L': |
| 306 | savelabels = 1; |
| 307 | break; |
| 308 | case 'J': |
| 309 | jxxxJUMP = 1; |
| 310 | break; |
| 311 | #ifdef DEBUG |
| 312 | case 'D': |
| 313 | debug = 1; |
| 314 | break; |
| 315 | case 'T': |
| 316 | toktrace = 1; |
| 317 | break; |
| 318 | #endif |
| 319 | case 'R': |
| 320 | readonlydata = 1; |
| 321 | break; |
| 322 | } /*end of the switch*/ |
| 323 | } /*end of pulling out all arguments*/ |
| 324 | } /*end of a flag argument*/ |
| 325 | --argc; ++argv; |
| 326 | nextarg:; |
| 327 | } |
| 328 | /* innames[ninfiles] = 0; */ |
| 329 | } |
| 330 | /* |
| 331 | * poke through the data space and find all sccs identifiers. |
| 332 | * We assume: |
| 333 | * a) that extern char **environ; is the first thing in the bss |
| 334 | * segment (true, if one is using the new version of cmgt.crt0.c) |
| 335 | * b) that the sccsid's have not been put into text space. |
| 336 | */ |
| 337 | selfwhat(place) |
| 338 | FILE *place; |
| 339 | { |
| 340 | extern char **environ; |
| 341 | register char *ub; |
| 342 | register char *cp; |
| 343 | register char *pat; |
| 344 | char *sbrk(); |
| 345 | |
| 346 | for (cp = (char *)&environ, ub = sbrk(0); cp < ub; cp++){ |
| 347 | if (cp[0] != '@') continue; |
| 348 | if (cp[1] != '(') continue; |
| 349 | if (cp[2] != '#') continue; |
| 350 | if (cp[3] != ')') continue; |
| 351 | fputc('\t', place); |
| 352 | for (cp += 4; cp < ub; cp++){ |
| 353 | if (*cp == 0) break; |
| 354 | if (*cp == '>') break; |
| 355 | if (*cp == '\n') break; |
| 356 | fputc(*cp, place); |
| 357 | } |
| 358 | fputc('\n', place); |
| 359 | } |
| 360 | } |
| 361 | |
| 362 | initialize() |
| 363 | { |
| 364 | if (signal(SIGINT, SIG_IGN) != SIG_IGN) |
| 365 | signal(SIGINT, delexit); |
| 366 | /* |
| 367 | * Install symbols in the table |
| 368 | */ |
| 369 | symtabinit(); |
| 370 | syminstall(); |
| 371 | /* |
| 372 | * Build the expression parser accelerator token sets |
| 373 | */ |
| 374 | buildtokensets(); |
| 375 | } |
| 376 | |
| 377 | zeroorigins() |
| 378 | { |
| 379 | register int locindex; |
| 380 | /* |
| 381 | * Mark usedot: the first NLOC slots are for named text segments, |
| 382 | * the next for named data segments. |
| 383 | */ |
| 384 | for (locindex = 0; locindex < NLOC; locindex++){ |
| 385 | usedot[locindex].e_xtype = XTEXT; |
| 386 | usedot[NLOC + locindex].e_xtype = XDATA; |
| 387 | usedot[locindex].e_xvalue = 0; |
| 388 | usedot[NLOC + locindex].e_xvalue = 0; |
| 389 | } |
| 390 | } |
| 391 | |
| 392 | zerolocals() |
| 393 | { |
| 394 | register int i; |
| 395 | |
| 396 | for (i = 0; i <= 9; i++) { |
| 397 | lgensym[i] = 1; |
| 398 | genref[i] = 0; |
| 399 | } |
| 400 | } |
| 401 | |
| 402 | i_pass1() |
| 403 | { |
| 404 | FILE *tempopen(); |
| 405 | if (useVM == 0) |
| 406 | tokfile = tempopen(tokfilename, "T"); |
| 407 | strfile = tempopen(strfilename, "S"); |
| 408 | /* |
| 409 | * write out the string length. |
| 410 | * This will be overwritten when the |
| 411 | * strings are tacked onto the growing a.out file |
| 412 | */ |
| 413 | strfilepos = sizeof(int); |
| 414 | fwrite(&strfilepos, sizeof(int), 1, strfile); |
| 415 | |
| 416 | inittokfile(); |
| 417 | initijxxx(); |
| 418 | } |
| 419 | |
| 420 | FILE *tempopen(tname, part) |
| 421 | char *tname; |
| 422 | char *part; |
| 423 | { |
| 424 | FILE *file; |
| 425 | sprintf(tname, "%s%sas%s%05d", |
| 426 | tmpdirprefix, |
| 427 | (tmpdirprefix[strlen(tmpdirprefix)-1] != '/') ? "/" : 0, |
| 428 | part, |
| 429 | getpid()); |
| 430 | file = fopen(tname, "w"); |
| 431 | if (file == NULL) { |
| 432 | yyerror("Bad pass 1 temporary file for writing %s", tname); |
| 433 | delexit(); |
| 434 | } |
| 435 | return(file); |
| 436 | } |
| 437 | |
| 438 | pass1() |
| 439 | { |
| 440 | register int i; |
| 441 | |
| 442 | passno = 1; |
| 443 | dotp = &usedot[0]; |
| 444 | txtfil = (BFILE *)0; |
| 445 | relfil = (struct relbufdesc *)0; |
| 446 | |
| 447 | if (ninfiles == 0){ /*take the input from stdin directly*/ |
| 448 | lineno = 1; |
| 449 | dotsname = "<stdin>"; |
| 450 | |
| 451 | yyparse(); |
| 452 | } else { /*we have the names tanked*/ |
| 453 | for (i = 0; i < ninfiles; i++){ |
| 454 | new_dot_s(innames[i]); |
| 455 | if (freopen(innames[i], "r", stdin) == NULL) { |
| 456 | yyerror( "Can't open source file %s\n", |
| 457 | innames[i]); |
| 458 | exit(2); |
| 459 | } |
| 460 | /* stdio is NOT used to read the input characters */ |
| 461 | /* we use read directly, into our own buffers */ |
| 462 | yyparse(); |
| 463 | } |
| 464 | } |
| 465 | |
| 466 | closetokfile(); /*kick out the last buffered intermediate text*/ |
| 467 | } |
| 468 | |
| 469 | testlocals() |
| 470 | { |
| 471 | register int i; |
| 472 | for (i = 0; i <= 9; i++) { |
| 473 | if (genref[i]) |
| 474 | yyerror("Reference to undefined local label %df", i); |
| 475 | lgensym[i] = 1; |
| 476 | genref[i] = 0; |
| 477 | } |
| 478 | } |
| 479 | |
| 480 | pass1_5() |
| 481 | { |
| 482 | sortsymtab(); |
| 483 | #ifdef DEBUG |
| 484 | if (debug) dumpsymtab(); |
| 485 | #endif |
| 486 | jxxxfix(); |
| 487 | #ifdef DEBUG |
| 488 | if (debug) dumpsymtab(); |
| 489 | #endif |
| 490 | } |
| 491 | |
| 492 | open_a_out() |
| 493 | { |
| 494 | /* |
| 495 | * Open up the a.out file now, and get set to build |
| 496 | * up offsets into it for all of the various text,data |
| 497 | * text relocation and data relocation segments. |
| 498 | */ |
| 499 | a_out_file = fopen(outfile, "w"); |
| 500 | if (a_out_file == NULL) { |
| 501 | yyerror("Cannot create %s", outfile); |
| 502 | delexit(); |
| 503 | } |
| 504 | biofd = a_out_file->_file; |
| 505 | a_out_off = 0; |
| 506 | } |
| 507 | |
| 508 | roundsegments() |
| 509 | { |
| 510 | register int locindex; |
| 511 | register long v; |
| 512 | /* |
| 513 | * round and assign text segment origins |
| 514 | * the exec header always goes in usefile[0] |
| 515 | */ |
| 516 | tsize = 0; |
| 517 | for (locindex=0; locindex<NLOC; locindex++) { |
| 518 | v = round(usedot[locindex].e_xvalue, FW); |
| 519 | usedot[locindex].e_xvalue = tsize; |
| 520 | if ((locindex == 0) || (v != 0) ){ |
| 521 | usefile[locindex] = (BFILE *)Calloc(1, sizeof(BFILE)); |
| 522 | bopen(usefile[locindex], a_out_off); |
| 523 | if (locindex == 0) |
| 524 | a_out_off = sizeof (struct exec); |
| 525 | } else { |
| 526 | usefile[locindex] = (BFILE *)-1; |
| 527 | } |
| 528 | tsize += v; |
| 529 | a_out_off += v; |
| 530 | } |
| 531 | /* |
| 532 | * Round and assign data segment origins. |
| 533 | */ |
| 534 | datbase = round(tsize, FW); |
| 535 | for (locindex=0; locindex<NLOC; locindex++) { |
| 536 | v = round(usedot[NLOC+locindex].e_xvalue, FW); |
| 537 | usedot[NLOC+locindex].e_xvalue = datbase + dsize; |
| 538 | if (v != 0){ |
| 539 | usefile[NLOC + locindex] = (BFILE *)Calloc(1,sizeof(BFILE)); |
| 540 | bopen(usefile[NLOC + locindex], a_out_off); |
| 541 | } else { |
| 542 | usefile[NLOC + locindex] = (BFILE *)-1; |
| 543 | } |
| 544 | dsize += v; |
| 545 | a_out_off += v; |
| 546 | } |
| 547 | /* |
| 548 | * Assign final values to symbols |
| 549 | */ |
| 550 | hdr.a_bss = dsize; |
| 551 | freezesymtab(); /* this touches hdr.a_bss */ |
| 552 | stabfix(); |
| 553 | /* |
| 554 | * Set up the relocation information "files" to |
| 555 | * be zero; outrel takes care of the rest |
| 556 | */ |
| 557 | for (locindex = 0; locindex < NLOC + NLOC; locindex++){ |
| 558 | rusefile[locindex] = (struct relbufdesc *)0; |
| 559 | } |
| 560 | } |
| 561 | |
| 562 | build_hdr() |
| 563 | { |
| 564 | /* |
| 565 | * Except for the text and data relocation sizes, |
| 566 | * calculate the final values for the header |
| 567 | * |
| 568 | * Write out the initial copy; we to come |
| 569 | * back later and patch up a_trsize and a_drsize, |
| 570 | * and overwrite this first version of the header. |
| 571 | */ |
| 572 | hdr.a_magic = MAGIC; |
| 573 | hdr.a_text = tsize; |
| 574 | hdr.a_data = dsize; |
| 575 | hdr.a_bss -= dsize; |
| 576 | hdr.a_syms = sizesymtab(); /* Does not include string pool length */ |
| 577 | hdr.a_entry = 0; |
| 578 | hdr.a_trsize = 0; |
| 579 | hdr.a_drsize = 0; |
| 580 | |
| 581 | bwrite((char *)&hdr, sizeof(hdr), usefile[0]); |
| 582 | } |
| 583 | |
| 584 | i_pass2() |
| 585 | { |
| 586 | if (useVM == 0) { |
| 587 | fclose(tokfile); |
| 588 | tokfile = fopen(tokfilename, "r"); |
| 589 | if (tokfile==NULL) { |
| 590 | yyerror("Bad pass 2 temporary file for reading %s", tokfilename); |
| 591 | delexit(); |
| 592 | } |
| 593 | } |
| 594 | fclose(strfile); |
| 595 | strfile = fopen(strfilename, "r"); |
| 596 | } |
| 597 | |
| 598 | pass2() |
| 599 | { |
| 600 | #ifdef DEBUG |
| 601 | if (debug) |
| 602 | printf("\n\n\n\t\tPASS 2\n\n\n\n"); |
| 603 | #endif DEBUG |
| 604 | passno = 2; |
| 605 | lineno = 1; |
| 606 | dotp = &usedot[0]; |
| 607 | txtfil = usefile[0]; /* already opened (always!) */ |
| 608 | relfil = 0; /* outrel takes care of the rest */ |
| 609 | initoutrel(); |
| 610 | |
| 611 | inittokfile(); |
| 612 | |
| 613 | yyparse(); |
| 614 | |
| 615 | closetokfile(); |
| 616 | } |
| 617 | |
| 618 | fillsegments() |
| 619 | { |
| 620 | int locindex; |
| 621 | /* |
| 622 | * Round text and data segments to FW by appending zeros |
| 623 | */ |
| 624 | for (locindex = 0; locindex < NLOC + NLOC; locindex++) { |
| 625 | if (usefile[locindex]) { |
| 626 | txtfil = usefile[locindex]; |
| 627 | dotp = &usedot[locindex]; |
| 628 | while (usedot[locindex].e_xvalue & FW) |
| 629 | outb(0); |
| 630 | } |
| 631 | } |
| 632 | } |
| 633 | |
| 634 | reloc_syms() |
| 635 | { |
| 636 | u_long closerelfil(); |
| 637 | /* |
| 638 | * Move the relocation information to a.out |
| 639 | * a_out_off is the offset so far: |
| 640 | * exec + text segments + data segments |
| 641 | */ |
| 642 | relocfile = (BFILE *)Calloc(1,sizeof(BFILE)); |
| 643 | bopen(relocfile, a_out_off); |
| 644 | a_out_off += closeoutrel(relocfile); |
| 645 | |
| 646 | hdr.a_trsize = trsize; |
| 647 | hdr.a_drsize = drsize; |
| 648 | if (readonlydata) { |
| 649 | hdr.a_text += hdr.a_data; |
| 650 | hdr.a_data = 0; |
| 651 | hdr.a_trsize += hdr.a_drsize; |
| 652 | hdr.a_drsize = 0; |
| 653 | } |
| 654 | /* |
| 655 | * Output the symbol table |
| 656 | * and if FLEXNAMES is set, the string pool |
| 657 | * |
| 658 | * We must first rewind the string pool file to its beginning, |
| 659 | * in case it was seek'ed into for fetching ascii and asciz |
| 660 | * strings. |
| 661 | */ |
| 662 | fseek(strfile, 0, 0); |
| 663 | symwrite(relocfile); |
| 664 | } |
| 665 | |
| 666 | fix_a_out() |
| 667 | { |
| 668 | if (lseek(a_out_file->_file, 0L, 0) < 0L) |
| 669 | yyerror("Reposition for header rewrite fails"); |
| 670 | if (write(a_out_file->_file, (char *)&hdr, sizeof (struct exec)) < 0) |
| 671 | yyerror("Rewrite of header fails"); |
| 672 | } |
| 673 | |
| 674 | delexit() |
| 675 | { |
| 676 | delete(); |
| 677 | if (passno == 2){ |
| 678 | unlink(outfile); |
| 679 | } |
| 680 | exit(1); |
| 681 | } |
| 682 | |
| 683 | delete() |
| 684 | { |
| 685 | if (useVM == 0 || tokfilename[0]) |
| 686 | unlink(tokfilename); |
| 687 | if (strfilename[0]) |
| 688 | unlink(strfilename); |
| 689 | } |
| 690 | |
| 691 | sawabort() |
| 692 | { |
| 693 | char *fillinbuffer(); |
| 694 | while (fillinbuffer() != (char *)0) |
| 695 | continue; |
| 696 | delete(); |
| 697 | exit(1); /*although the previous pass will also exit non zero*/ |
| 698 | } |
| 699 | |
| 700 | panic(fmt, a1, a2, a3, a4) |
| 701 | char *fmt; |
| 702 | /*VARARGS 1*/ |
| 703 | { |
| 704 | yyerror("Assembler panic: bad internal data structure."); |
| 705 | yyerror(fmt, a1, a2, a3, a4); |
| 706 | delete(); |
| 707 | abort(); |
| 708 | } |