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   1 /* lkmain.c */
   2 /*
   3  * (C) Copyright 1989-1995
   4  * All Rights Reserved
   5  *
   6  * Alan R. Baldwin
   7  * 721 Berkeley St.
   8  * Kent, Ohio  44240
   9  */
  10
  11 /*
  12  * Extensions: P. Felber
  13  */
  14
  15 #include <stdio.h>
  16 #include <string.h>
  17 //#include <alloc.h>
  18 #include "aslink.h"
  19
  20 #ifndef SDK_VERSION_STRING
  21 #define SDK_VERSION_STRING      "3.0.0"
  22 #endif
  23 #ifndef TARGET_STRING
  24 #define TARGET_STRING           "gbz80"
  25 #endif
  26
  27 /*)Module       lkmain.c
  28  *
  29  *      The module lkmain.c contains the functions which
  30  *      (1) input the linker options, parameters, and specifications
  31  *      (2) perform a two pass link
  32  *      (3) produce the appropriate linked data output and/or
  33  *          link map file and/or relocated listing files.
  34  *
  35  *      lkmain.c contains the following functions:
  36  *              FILE *  afile(fn,ft,wf)
  37  *              VOID    bassav()
  38  *              VOID    gblsav()
  39  *              VOID    link()
  40  *              VOID    lkexit()
  41  *              VOID    main(argc,argv)
  42  *              VOID    map()
  43  *              int     parse()
  44  *              VOID    setbas()
  45  *              VOID    setgbl()
  46  *              VOID    usage()
  47  *
  48  *      lkmain.c contains the following local variables:
  49  *              char *  usetext[]       array of pointers to the
  50  *                                      command option tect lines
  51  *
  52  */
  53
  54 /*)Function     VOID    main(argc,argv)
  55  *
  56  *              int     argc            number of command line arguments + 1
  57  *              char *  argv[]          array of pointers to the command line
  58  *                                      arguments
  59  *
  60  *      The function main() evaluates the command line arguments to
  61  *      determine if the linker parameters are to input through 'stdin'
  62  *      or read from a command file.  The functiond getline() and parse()
  63  *      are to input and evaluate the linker parameters.  The linking process
  64  *      proceeds by making the first pass through each .rel file in the order
  65  *      presented to the linker.  At the end of the first pass the setbase(),
  66  *      lnkarea(), setgbl(), and symdef() functions are called to evaluate
  67  *      the base address terms, link all areas, define global variables,
  68  *      and look for undefined symbols.  Following these routines a linker
  69  *      map file may be produced and the linker output files may be opened.
  70  *      The second pass through the .rel files will output the linked data
  71  *      in one of the four supported formats.
  72  *
  73  *      local variables:
  74  *              char *  p               pointer to an argument string
  75  *              int     c               character from argument string
  76  *              int     i               loop counter
  77  *
  78  *      global variables:
  79  *                                      text line in ib[]
  80  *              lfile   *cfp            The pointer *cfp points to the
  81  *                                      current lfile structure
  82  *              char    ctype[]         array of character types, one per
  83  *                                      ASCII character
  84  *              lfile   *filep          The pointer *filep points to the
  85  *                                      beginning of a linked list of
  86  *                                      lfile structures.
  87  *              head    *hp             Pointer to the current
  88  *                                      head structure
  89  *              char    ib[NINPUT]      .rel file text line
  90  *              char    *ip             pointer into the .rel file
  91  *              lfile   *linkp          pointer to first lfile structure
  92  *                                      containing an input .rel file
  93  *                                      specification
  94  *              int     lkerr           error flag
  95  *              int     mflag           Map output flag
  96  *              int     oflag           Output file type flag
  97  *              FILE    *ofp            Output file handle
  98  *                                      for word formats
  99  *              FILE    *ofph           Output file handle
 100  *                                      for high byte format
 101  *              FILE    *ofpl           Output file handle
 102  *                                      for low byte format
 103  *              int     pass            linker pass number
 104  *              int     pflag           print linker command file flag
 105  *              int     radix           current number conversion radix
 106  *              FILE    *sfp            The file handle sfp points to the
 107  *                                      currently open file
 108  *              lfile   *startp         asmlnk startup file structure
 109  *              FILE *  stdin           c_library
 110  *              FILE *  stdout          c_library
 111  *
 112  *      functions called:
 113  *              FILE *  afile()         lkmain.c
 114  *              int     fclose()        c_library
 115  *              int     fprintf()       c_library
 116  *              int     getline()       lklex.c
 117  *              VOID    library()       lklibr.c
 118  *              VOID    link()          lkmain.c
 119  *              VOID    lkexit()        lkmain.c
 120  *              VOID    lnkarea()       lkarea.c
 121  *              VOID    map()           lkmain.c
 122  *              VOID    new()           lksym.c
 123  *              int     parse()         lkmain.c
 124  *              VOID    reloc()         lkreloc.c
 125  *              VOID    search()        lklibr.c
 126  *              VOID    setbas()        lkmain.c
 127  *              VOID    setgbl()        lkmain.c
 128  *              VOID    symdef()        lksym.c
 129  *              VOID    usage()         lkmain.c
 130  *
 131  *      side effects:
 132  *              Completion of main() completes the linking process
 133  *              and may produce a map file (.map) and/or a linked
 134  *              data files (.ihx or .s19) and/or one or more
 135  *              relocated listing files (.rst).
 136  */
 137
 138 #ifdef SDK
 139 int binary = 0;
 140 #endif /* SDK */
 141 #ifdef GAMEBOY
 142 char *default_basep[] = {
 143   "_CODE=0x0200",
 144   "_DATA=0xC0A0",
 145   NULL
 146 };
 147
 148 char *default_globlp[] = {
 149   /* DMA transfer must start at multiples of 0x100 */
 150   ".OAM=0xC000",
 151   ".STACK=0xE000",
 152   ".refresh_OAM=0xFF80",
 153
 154   ".init=0x0000",
 155
 156   NULL
 157 };
 158 #endif /* GAMEBOY */
 159
 160 int
 161 main(argc, argv)
 162 char *argv[];
 163 {
 164         register char *p;
 165         register int c, i;
 166
 167 #ifdef GAMEBOY
 168         nb_rom_banks = 2;
 169         nb_ram_banks = 0;
 170         mbc_type = 0;
 171         symflag=0;
 172
 173         for(i = 0; default_basep[i] != NULL; i++) {
 174                 if(basep == NULL) {
 175                         basep = (struct base *)new(sizeof(struct base));
 176                         bsp = basep;
 177                 } else {
 178                         bsp->b_base = (struct base *)new(sizeof(struct base));
 179                         bsp = bsp->b_base;
 180                 }
 181                 bsp->b_strp = default_basep[i];
 182         }
 183         for(i = 0; default_globlp[i] != NULL; i++) {
 184                 if(globlp == NULL) {
 185                         globlp = (struct globl *)new(sizeof(struct globl));
 186                         gsp = globlp;
 187                 } else {
 188                         gsp->g_globl = (struct globl *)new(sizeof(struct globl));
 189                         gsp = gsp->g_globl;
 190                 }
 191                 gsp->g_strp = default_globlp[i];
 192         }
 193 #endif /* GAMEBOY */
 194 #ifndef SDK
 195         fprintf(stdout, "\n");
 196 #endif /* SDK */
 197
 198         startp = (struct lfile *) new (sizeof (struct lfile));
 199
 200         pflag = 1;
 201         for (i=1; i<argc; ++i) {
 202                 p = argv[i];
 203                 if (*p == '-') {
 204                         while (ctype[c = *(++p)] & LETTER) {
 205                                 switch(c) {
 206
 207                                 case 'c':
 208                                 case 'C':
 209                                         startp->f_type = F_STD;
 210                                         break;
 211
 212                                 case 'f':
 213                                 case 'F':
 214                                         startp->f_type = F_LNK;
 215                                         break;
 216
 217                                 case 'n':
 218                                 case 'N':
 219                                         pflag = 0;
 220                                         break;
 221
 222                                 case 'p':
 223                                 case 'P':
 224                                         pflag = 1;
 225                                         break;
 226
 227                                 default:
 228                                         usage();
 229                                 }
 230                         }
 231
 232 #ifdef SDK
 233                         if(c == '-') {
 234                                 startp->f_type = F_CMD;
 235                                 startp->f_idp = (char *)&argv[i+1];
 236                                 break;
 237                         }
 238 #endif /* SDK */
 239
 240                 } else {
 241                         if (startp->f_type == F_LNK) {
 242                                 startp->f_idp = p;
 243                         }
 244                 }
 245         }
 246         if (startp->f_type == NULL)
 247                 usage();
 248         if (startp->f_type == F_LNK && startp->f_idp == NULL)
 249                 usage();
 250 #ifdef SDK
 251         if (startp->f_type == F_CMD && startp->f_idp == NULL)
 252                 usage();
 253 #endif /* SDK */
 254
 255         cfp = NULL;
 256         sfp = NULL;
 257         filep = startp;
 258         while (1) {
 259                 ip = ib;
 260                 if (getline() == 0)
 261                         break;
 262                 if (pflag && sfp != stdin)
 263                         fprintf(stdout, "%s\n", ip);
 264                 if (*ip == NULL || parse())
 265                         break;
 266         }
 267         if (sfp)
 268                 fclose(sfp);
 269         if (linkp == NULL)
 270                 usage();
 271 #ifdef SDK
 272         if (linkp->f_flp == NULL)
 273                 usage();
 274 #endif /* SDK */
 275
 276 #ifdef GAMEBOY
 277         for(i = 1; i < nb_rom_banks; i++) {
 278                 bsp->b_base = (struct base *)new(sizeof(struct base));
 279                 bsp = bsp->b_base;
 280                 bsp->b_strp = (char *)malloc(18);
 281                 sprintf(bsp->b_strp, "_CODE_%d=0x4000", i);
 282         }
 283         for(i = 0; i < nb_ram_banks; i++) {
 284                 bsp->b_base = (struct base *)new(sizeof(struct base));
 285                 bsp = bsp->b_base;
 286                 bsp->b_strp = (char *)malloc(18);
 287                 sprintf(bsp->b_strp, "_DATA_%d=0xA000", i);
 288         }
 289 #endif /* GAMEBOY */
 290
 291         syminit();
 292         for (pass=0; pass<2; ++pass) {
 293                 cfp = NULL;
 294                 sfp = NULL;
 295 #ifdef SDK
 296                 filep = linkp->f_flp;
 297 #else /* SDK */
 298                 filep = linkp;
 299 #endif /* SDK */
 300                 hp = NULL;
 301                 radix = 10;
 302
 303                 while (getline()) {
 304                         ip = ib;
 305                         link();
 306                 }
 307                 if (pass == 0) {
 308                         /*
 309                          * Search libraries for global symbols
 310                          */
 311                         search();
 312                         /*
 313                          * Set area base addresses.
 314                          */
 315                         setbas();
 316                         /*
 317                          * Link all area addresses.
 318                          */
 319                         lnkarea();
 320                         /*
 321                          * Process global definitions.
 322                          */
 323                         setgbl();
 324                         /*
 325                          * Check for undefined globals.
 326                          */
 327                         symdef(stderr);
 328 #ifdef SDK
 329                         if (symflag)
 330                                 sym();
 331 #endif
 332                         /*
 333                          * Output Link Map.
 334                          */
 335                         if (mflag)
 336                                 map();
 337                         /*
 338                          * Open output file
 339                          */
 340                         if (oflag == 1) {
 341 #ifdef SDK
 342                                 ofp = afile(linkp->f_idp, "ihx", 1);
 343 #else /* SDK */
 344                                 ofp = afile(linkp->f_idp, "IHX", 1);
 345 #endif /* SDK */
 346                                 if (ofp == NULL) {
 347                                         lkexit(1);
 348                                 }
 349                         } else
 350                         if (oflag == 2) {
 351 #ifdef SDK
 352                                 ofp = afile(linkp->f_idp, "s19", 1);
 353 #else /* SDK */
 354                                 ofp = afile(linkp->f_idp, "S19", 1);
 355 #endif /* SDK */
 356                                 if (ofp == NULL) {
 357                                         lkexit(1);
 358                                 }
 359 #ifdef SDK
 360                         } else
 361                         if (oflag == 3) {
 362                                 binary = 1;
 363                                 ofp = afile(linkp->f_idp, "", 1);
 364                                 binary = 0;
 365                                 if (ofp == NULL) {
 366                                         lkexit(1);
 367                                 }
 368 #endif /* SDK */
 369                         }
 370                 } else {
 371                         /*
 372                          * Link in library files
 373                          */
 374                         library();
 375                         reloc('E');
 376                 }
 377         }
 378         lkexit(lkerr);
 379 }
 380
 381 /*)Function     VOID    lkexit(i)
 382  *
 383  *                      int     i       exit code
 384  *
 385  *      The function lkexit() explicitly closes all open
 386  *      files and then terminates the program.
 387  *
 388  *      local variables:
 389  *              none
 390  *
 391  *      global variables:
 392  *              FILE *  mfp             file handle for .map
 393  *              FILE *  ofp             file handle for .ihx/.s19
 394  *              FILE *  rfp             file hanlde for .rst
 395  *              FILE *  sfp             file handle for .rel
 396  *              FILE *  tfp             file handle for .lst
 397  *
 398  *      functions called:
 399  *              int     fclose()        c_library
 400  *              VOID    exit()          c_library
 401  *
 402  *      side effects:
 403  *              All files closed. Program terminates.
 404  */
 405
 406 VOID
 407 lkexit(i)
 408 int i;
 409 {
 410         if (mfp != NULL) fclose(mfp);
 411         if (ofp != NULL) fclose(ofp);
 412         if (rfp != NULL) fclose(rfp);
 413         if (sfp != NULL) fclose(sfp);
 414         if (tfp != NULL) fclose(tfp);
 415         exit(i);
 416 }
 417
 418 /*)Function     link()
 419  *
 420  *      The function link() evaluates the directives for each line of
 421  *      text read from the .rel file(s).  The valid directives processed
 422  *      are:
 423  *              X, D, Q, H, M, A, S, T, R, and P.
 424  *
 425  *      local variables:
 426  *              int     c               first non blank character of a line
 427  *
 428  *      global variables:
 429  *              head    *headp          The pointer to the first
 430  *                                      head structure of a linked list
 431  *              head    *hp             Pointer to the current
 432  *                                      head structure
 433  *              int     pass            linker pass number
 434  *              int     radix           current number conversion radix
 435  *
 436  *      functions called:
 437  *              char    endline()       lklex.c
 438  *              VOID    module()        lkhead.c
 439  *              VOID    newarea()       lkarea.c
 440  *              VOID    newhead()       lkhead.c
 441  *              sym *   newsym()        lksym.c
 442  *              VOID    reloc()         lkreloc.c
 443  *
 444  *      side effects:
 445  *              Head, area, and symbol structures are created and
 446  *              the radix is set as the .rel file(s) are read.
 447  */
 448
 449 VOID
 450 link()
 451 {
 452         register int c;
 453
 454         if ((c=endline()) == 0) { return; }
 455         switch (c) {
 456
 457         case 'X':
 458                 radix = 16;
 459                 break;
 460
 461         case 'D':
 462                 radix = 10;
 463                 break;
 464
 465         case 'Q':
 466                 radix = 8;
 467                 break;
 468
 469         case 'H':
 470                 if (pass == 0) {
 471                         newhead();
 472                 } else {
 473                         if (hp == 0) {
 474                                 hp = headp;
 475                         } else {
 476                                 hp = hp->h_hp;
 477                         }
 478                 }
 479                 sdp.s_area = NULL;
 480                 sdp.s_areax = NULL;
 481                 sdp.s_addr = 0;
 482                 break;
 483
 484         case 'M':
 485                 if (pass == 0)
 486                         module();
 487                 break;
 488
 489         case 'A':
 490                 if (pass == 0)
 491                         newarea();
 492                 if (sdp.s_area == NULL) {
 493                         sdp.s_area = areap;
 494                         sdp.s_areax = areap->a_axp;
 495                         sdp.s_addr = 0;
 496                 }
 497                 break;
 498
 499         case 'S':
 500                 if (pass == 0)
 501                         newsym();
 502                 break;
 503
 504         case 'T':
 505         case 'R':
 506         case 'P':
 507                 if (pass == 0)
 508                         break;
 509                 reloc(c);
 510                 break;
 511
 512         default:
 513                 break;
 514         }
 515         if (c == 'X' || c == 'D' || c == 'Q') {
 516                 if ((c = get()) == 'H') {
 517                         hilo = 1;
 518                 } else
 519                 if (c == 'L') {
 520                         hilo = 0;
 521                 }
 522         }
 523 }
 524
 525 /*)Function     VOID    map()
 526  *
 527  *      The function map() opens the output map file and calls the various
 528  *      routines to
 529  *      (1) output the variables in each area,
 530  *      (2) list the files processed with module names,
 531  *      (3) list the libraries file processed,
 532  *      (4) list base address definitions,
 533  *      (5) list global variable definitions, and
 534  *      (6) list any undefined variables.
 535  *
 536  *      local variables:
 537  *              int     i               counter
 538  *              head *  hdp             pointer to head structure
 539  *              lbfile *lbfh            pointer to library file structure
 540  *
 541  *      global variables:
 542  *              area    *ap             Pointer to the current
 543  *                                      area structure
 544  *              area    *areap          The pointer to the first
 545  *                                      area structure of a linked list
 546  *              base    *basep          The pointer to the first
 547  *                                      base structure
 548  *              base    *bsp            Pointer to the current
 549  *                                      base structure
 550  *              lfile   *filep          The pointer *filep points to the
 551  *                                      beginning of a linked list of
 552  *                                      lfile structures.
 553  *              globl   *globlp         The pointer to the first
 554  *                                      globl structure
 555  *              globl   *gsp            Pointer to the current
 556  *                                      globl structure
 557  *              head    *headp          The pointer to the first
 558  *                                      head structure of a linked list
 559  *              lbfile  *lbfhead        The pointer to the first
 560  *                                      lbfile structure of a linked list
 561  *              lfile   *linkp          pointer to first lfile structure
 562  *                                      containing an input REL file
 563  *                                      specification
 564  *              int     lop             current line number on page
 565  *              FILE    *mfp            Map output file handle
 566  *              int     page            current page number
 567  *
 568  *      functions called:
 569  *              FILE *  afile()         lkmain.c
 570  *              int     fprintf()       c_library
 571  *              VOID    lkexit()        lkmain.c
 572  *              VOID    lstarea()       lklist.c
 573  *              VOID    newpag()        lklist.c
 574  *              VOID    symdef()        lksym.c
 575  *
 576  *      side effects:
 577  *              The map file is created.
 578  */
 579
 580 #ifndef MLH_MAP
 581 VOID
 582 map()
 583 {
 584         register i;
 585         register struct head *hdp;
 586         register struct lbfile *lbfh;
 587
 588         /*
 589          * Open Map File
 590          */
 591 #ifdef SDK
 592         mfp = afile(linkp->f_idp, "map", 1);
 593 #else /* SDK */
 594         mfp = afile(linkp->f_idp, "MAP", 1);
 595 #endif /* SDK */
 596         if (mfp == NULL) {
 597                 lkexit(1);
 598         }
 599
 600         /*
 601          * Output Map Area Lists
 602          */
 603         page = 0;
 604         lop  = NLPP;
 605         ap = areap;
 606         while (ap) {
 607                 lstarea(ap);
 608                 ap = ap->a_ap;
 609         }
 610         /*
 611          * List Linked Files
 612          */
 613         newpag(mfp);
 614         fprintf(mfp, "\nFiles Linked      [ module(s) ]\n\n");
 615         hdp = headp;
 616 #ifdef SDK
 617         filep = linkp->f_flp;
 618 #else /* SDK */
 619         filep = linkp;
 620 #endif /* SDK */
 621         while (filep) {
 622                 fprintf(mfp, "%-16s", filep->f_idp);
 623                 i = 0;
 624                 while ((hdp != NULL) && (hdp->h_lfile == filep)) {
 625                         if (i % 5) {
 626                             fprintf(mfp, ", %8.8s", hdp->m_id);
 627                         } else {
 628                             if (i) {
 629                                 fprintf(mfp, ",\n%20s%8.8s", "", hdp->m_id);
 630                             } else {
 631                                 fprintf(mfp, "  [ %8.8s", hdp->m_id);
 632                             }
 633                         }
 634                         hdp = hdp->h_hp;
 635                         i++;
 636                 }
 637                 if (i)
 638                         fprintf(mfp, " ]");
 639                 fprintf(mfp, "\n");
 640                 filep = filep->f_flp;
 641         }
 642         /*
 643          * List Linked Libraries
 644          */
 645         if (lbfhead != NULL) {
 646                 fprintf(mfp,
 647         "\nLibraries Linked                    [   object  file   ]\n\n");
 648                 for (lbfh=lbfhead; lbfh; lbfh=lbfh->next) {
 649                         fprintf(mfp, "%-32s    [ %16.16s ]\n",
 650                                 lbfh->libspc, lbfh->relfil);
 651                 }
 652                 fprintf(mfp, "\n");
 653         }
 654         /*
 655          * List Base Address Definitions
 656          */
 657         if (basep) {
 658                 newpag(mfp);
 659                 fprintf(mfp, "\nUser Base Address Definitions\n\n");
 660                 bsp = basep;
 661                 while (bsp) {
 662                         fprintf(mfp, "%s\n", bsp->b_strp);
 663                         bsp = bsp->b_base;
 664                 }
 665         }
 666         /*
 667          * List Global Definitions
 668          */
 669         if (globlp) {
 670                 newpag(mfp);
 671                 fprintf(mfp, "\nUser Global Definitions\n\n");
 672                 gsp = globlp;
 673                 while (gsp) {
 674                         fprintf(mfp, "%s\n", gsp->g_strp);
 675                         gsp = gsp->g_globl;
 676                 }
 677         }
 678         fprintf(mfp, "\n\f");
 679         symdef(mfp);
 680 }
 681 #else
 682 VOID map()
 683 {
 684         register struct head *hdp;
 685         register struct lbfile *lbfh;
 686
 687         /*
 688          * Open Map File
 689          */
 690 #ifdef SDK
 691         mfp = afile(linkp->f_idp, "map", 1);
 692 #else /* SDK */
 693         mfp = afile(linkp->f_idp, "MAP", 1);
 694 #endif /* SDK */
 695         if (mfp == NULL) {
 696                 lkexit(1);
 697         }
 698
 699         /*
 700          *Output Map Area Lists
 701          */
 702         page = 0;
 703         lop  = NLPP;
 704         ap = areap;
 705         while (ap) {
 706                 lstarea(ap);
 707                 ap = ap->a_ap;
 708         }
 709         /*
 710          * List Linked Files
 711          */
 712         hdp = headp;
 713 #ifdef SDK
 714         filep = linkp->f_flp;
 715 #else /* SDK */
 716         filep = linkp;
 717 #endif /* SDK */
 718         if (filep) {
 719                 fprintf( mfp, "MODULES\n");
 720         }
 721         while (filep) {
 722                 fprintf(mfp, "\tFILE %s\n", filep->f_idp);
 723                 while ((hdp != NULL) && (hdp->h_lfile == filep)) {
 724                         if (strlen(hdp->m_id)>0)
 725                                 fprintf(mfp, "\t\tNAME %s\n", hdp->m_id);
 726                         hdp = hdp->h_hp;
 727                 }
 728                 filep = filep->f_flp;
 729         }
 730         /*
 731          * List Linked Libraries
 732          */
 733         if (lbfhead != NULL) {
 734                 fprintf(mfp, "LIBRARIES\n");
 735                 for (lbfh=lbfhead; lbfh; lbfh=lbfh->next) {
 736                         fprintf(mfp,    "\tLIBRARY %s\n"
 737                                         "\t\tMODULE %s\n",
 738                                 lbfh->libspc, lbfh->relfil);
 739                 }
 740         }
 741         /*
 742          * List Base Address Definitions
 743          */
 744         if (basep) {
 745                 fprintf(mfp, "USERBASEDEF\n");
 746                 bsp = basep;
 747                 while (bsp) {
 748                         fprintf(mfp, "\t%s\n", bsp->b_strp);
 749                         bsp = bsp->b_base;
 750                 }
 751         }
 752         /*
 753          * List Global Definitions
 754          */
 755         if (globlp) {
 756                 fprintf(mfp, "USERGLOBALDEF\n");
 757                 gsp = globlp;
 758                 while (gsp) {
 759                         fprintf(mfp, "\t%s\n", gsp->g_strp);
 760                         gsp = gsp->g_globl;
 761                 }
 762         }
 763         symdef(mfp);
 764 #ifdef SDK
 765         if (mfp!=NULL) {
 766                 fclose(mfp);
 767                 mfp = NULL;
 768         }
 769 #endif
 770 }
 771 #endif /* MLH_MAP */
 772
 773 #ifdef SDK
 774 VOID sym()
 775 {
 776         /*
 777          * Open sym File
 778          */
 779         mfp = afile(linkp->f_idp, "sym", 1);
 780         if (mfp == NULL) {
 781                 lkexit(1);
 782         }
 783         fprintf( mfp,   "; no$gmb format .sym file\n"
 784                         "; Generated automagically by ASxxxx linker %s (SDK " SDK_VERSION_STRING ")\n"
 785                 , VERSION );
 786         /*
 787          * Output sym Area Lists
 788          */
 789         page = 0;
 790         lop  = NLPP;
 791         ap = areap;
 792         while (ap) {
 793                 lstareatosym(ap);
 794                 ap = ap->a_ap;
 795         }
 796         if (mfp!=NULL) {
 797                 fclose(mfp);
 798                 mfp = NULL;
 799         }
 800 }
 801 #endif /* SDK */
 802
 803 /*)Function     int     parse()
 804  *
 805  *      The function parse() evaluates all command line or file input
 806  *      linker directives and updates the appropriate variables.
 807  *
 808  *      local variables:
 809  *              int     c               character value
 810  *              char    fid[]           file id string
 811  *
 812  *      global variables:
 813  *              char    ctype[]         array of character types, one per
 814  *                                      ASCII character
 815  *              lfile   *lfp            pointer to current lfile structure
 816  *                                      being processed by parse()
 817  *              lfile   *linkp          pointer to first lfile structure
 818  *                                      containing an input REL file
 819  *                                      specification
 820  *              int     mflag           Map output flag
 821  *              int     oflag           Output file type flag
 822  *              int     pflag           print linker command file flag
 823  *              FILE *  stderr          c_library
 824  *              int     uflag           Relocated listing flag
 825  *              int     xflag           Map file radix type flag
 826  *
 827  *      Functions called:
 828  *              VOID    addlib()        lklibr.c
 829  *              VOID    addpath()       lklibr.c
 830  *              VOID    bassav()        lkmain.c
 831  *              int     fprintf()       c_library
 832  *              VOID    gblsav()        lkmain.c
 833  *              VOID    getfid()        lklex.c
 834  *              char    getnb()         lklex.c
 835  *              VOID    lkexit()        lkmain.c
 836  *              char *  strcpy()        c_library
 837  *              int     strlen()        c_library
 838  *
 839  *      side effects:
 840  *              Various linker flags are updated and the linked
 841  *              structure lfile is created.
 842  */
 843
 844 int
 845 parse()
 846 {
 847         register int c;
 848         char fid[NINPUT];
 849
 850         while ((c = getnb()) != 0) {
 851                 if ( c == '-') {
 852                         while (ctype[c=get()] & LETTER) {
 853                                 switch(c) {
 854
 855                                 case 'i':
 856                                 case 'I':
 857                                         oflag = 1;
 858                                         break;
 859
 860                                 case 's':
 861                                 case 'S':
 862                                         oflag = 2;
 863                                         break;
 864 #ifdef GAMEBOY
 865                                 case 'y':
 866                                 case 'Y':
 867                                         c = get();
 868                                         if(c == 'O' || c == 'o')
 869                                                 nb_rom_banks = expr(0);
 870                                         else if(c == 'A' || c == 'a')
 871                                                 nb_ram_banks = expr(0);
 872                                         else if(c == 'T' || c == 't')
 873                                                 mbc_type = expr(0);
 874                                         else if(c == 'N' || c == 'n') {
 875                                                 int i = 0;
 876                                                 if(getnb() != '=' || getnb() != '"') {
 877                                                         fprintf(stderr, "Syntax error in -YN=\"name\" flag\n");
 878                                                         lkexit(1);
 879                                                 }
 880                                                 while((c = get()) != '"' && i < 16) {
 881                                                         cart_name[i++] = c;
 882                                                 }
 883                                                 if(i < 16)
 884                                                         cart_name[i] = 0;
 885                                                 else
 886                                                         while(get() != '"')
 887                                                                 ;
 888                                         } else if(c == 'P' || c == 'p') {
 889                                                 unsigned int addr;
 890                                                 unsigned char value;
 891                                                 patch *p = patches;
 892
 893                                                 patches = (patch *)malloc(sizeof(patch));
 894                                                 patches->next = p;
 895                                                 patches->addr = expr(0);
 896                                                 if(getnb() != '=') {
 897                                                         fprintf(stderr, "Syntax error in -YHaddr=val flag\n");
 898                                                         lkexit(1);
 899                                                 }
 900                                                 patches->value = expr(0);
 901                                         } else {
 902                                                 fprintf(stderr, "Invalid option\n");
 903                                                 lkexit(1);
 904                                         }
 905                                         break;
 906
 907 #endif /* GAMEBOY */
 908 #ifdef SDK
 909                                 case 'j':
 910                                 case 'J':
 911                                         ++symflag;
 912                                         break;
 913                                 case 'z':
 914                                 case 'Z':
 915                                         oflag = 3;
 916                                         break;
 917 #endif /* SDK */
 918                                 case 'm':
 919                                 case 'M':
 920                                         ++mflag;
 921                                         break;
 922
 923                                 case 'u':
 924                                 case 'U':
 925                                         uflag = 1;
 926                                         break;
 927
 928                                 case 'x':
 929                                 case 'X':
 930                                         xflag = 0;
 931                                         break;
 932
 933                                 case 'q':
 934                                 case 'Q':
 935                                         xflag = 1;
 936                                         break;
 937
 938                                 case 'd':
 939                                 case 'D':
 940                                         xflag = 2;
 941                                         break;
 942
 943                                 case 'e':
 944                                 case 'E':
 945                                         return(1);
 946
 947                                 case 'n':
 948                                 case 'N':
 949                                         pflag = 0;
 950                                         break;
 951
 952                                 case 'p':
 953                                 case 'P':
 954                                         pflag = 1;
 955                                         break;
 956
 957                                 case 'b':
 958                                 case 'B':
 959                                         bassav();
 960                                         return(0);
 961
 962                                 case 'g':
 963                                 case 'G':
 964                                         gblsav();
 965                                         return(0);
 966
 967                                 case 'k':
 968                                 case 'K':
 969                                         addpath();
 970                                         return(0);
 971
 972                                 case 'l':
 973                                 case 'L':
 974                                         addlib();
 975                                         return(0);
 976
 977                                 default:
 978                                         fprintf(stderr, "Invalid option\n");
 979                                         lkexit(1);
 980                                 }
 981                         }
 982                 } else
 983                 if (ctype[c] != ILL) {
 984                         if (linkp == NULL) {
 985                                 linkp = (struct lfile *)
 986                                         new (sizeof (struct lfile));
 987                                 lfp = linkp;
 988                         } else {
 989                                 lfp->f_flp = (struct lfile *)
 990                                                 new (sizeof (struct lfile));
 991                                 lfp = lfp->f_flp;
 992                         }
 993                         getfid(fid, c);
 994                         lfp->f_idp = (char *) new (strlen(fid)+1);
 995                         strcpy(lfp->f_idp, fid);
 996                         lfp->f_type = F_REL;
 997                 } else {
 998                         fprintf(stderr, "Invalid input");
 999                         lkexit(1);
1000                 }
1001         }
1002         return(0);
1003 }
1004
1005 /*)Function     VOID    bassav()
1006  *
1007  *      The function bassav() creates a linked structure containing
1008  *      the base address strings input to the linker.
1009  *
1010  *      local variables:
1011  *              none
1012  *
1013  *      global variables:
1014  *              base    *basep          The pointer to the first
1015  *                                      base structure
1016  *              base    *bsp            Pointer to the current
1017  *                                      base structure
1018  *              char    *ip             pointer into the REL file
1019  *                                      text line in ib[]
1020  *
1021  *       functions called:
1022  *              char    getnb()         lklex.c
1023  *              VOID *  new()           lksym.c
1024  *              int     strlen()        c_library
1025  *              char *  strcpy()        c_library
1026  *              VOID    unget()         lklex.c
1027  *
1028  *      side effects:
1029  *              The basep structure is created.
1030  */
1031
1032 VOID
1033 bassav()
1034 {
1035         if (basep == NULL) {
1036                 basep = (struct base *)
1037                         new (sizeof (struct base));
1038                 bsp = basep;
1039         } else {
1040                 bsp->b_base = (struct base *)
1041                                 new (sizeof (struct base));
1042                 bsp = bsp->b_base;
1043         }
1044         unget(getnb());
1045         bsp->b_strp = (char *) new (strlen(ip)+1);
1046         strcpy(bsp->b_strp, ip);
1047 }
1048
1049 /*)Function     VOID    setbas()
1050  *
1051  *      The function setbas() scans the base address lines in hte
1052  *      basep structure, evaluates the arguments, and sets beginning
1053  *      address of the specified areas.
1054  *
1055  *      local variables:
1056  *              int     v               expression value
1057  *              char    id[]            base id string
1058  *
1059  *      global variables:
1060  *              area    *ap             Pointer to the current
1061  *                                      area structure
1062  *              area    *areap          The pointer to the first
1063  *                                      area structure of a linked list
1064  *              base    *basep          The pointer to the first
1065  *                                      base structure
1066  *              base    *bsp            Pointer to the current
1067  *                                      base structure
1068  *              char    *ip             pointer into the REL file
1069  *                                      text line in ib[]
1070  *              int     lkerr           error flag
1071  *
1072  *       functions called:
1073  *              Addr_T  expr()          lkeval.c
1074  *              int     fprintf()       c_library
1075  *              VOID    getid()         lklex.c
1076  *              char    getnb()         lklex.c
1077  *              int     symeq()         lksym.c
1078  *
1079  *      side effects:
1080  *              The base address of an area is set.
1081  */
1082
1083 VOID
1084 setbas()
1085 {
1086         register int v;
1087         char id[NCPS];
1088
1089         bsp = basep;
1090         while (bsp) {
1091                 ip = bsp->b_strp;
1092                 getid(id, -1);
1093                 if (getnb() == '=') {
1094                         v = expr(0);
1095                         for (ap = areap; ap != NULL; ap = ap->a_ap) {
1096                                 if (symeq(id, ap->a_id))
1097                                         break;
1098                         }
1099                         if (ap == NULL) {
1100 #ifndef SDK
1101                                 fprintf(stderr,
1102                                 "No definition of area %s\n", id);
1103                                 lkerr++;
1104 #endif /* SDK */
1105                         } else {
1106                                 ap->a_addr = v;
1107                         }
1108                 } else {
1109                         fprintf(stderr, "No '=' in base expression");
1110                         lkerr++;
1111                 }
1112                 bsp = bsp->b_base;
1113         }
1114 }
1115
1116 /*)Function     VOID    gblsav()
1117  *
1118  *      The function gblsav() creates a linked structure containing
1119  *      the global variable strings input to the linker.
1120  *
1121  *      local variable:
1122  *              none
1123  *
1124  *      global variables:
1125  *              globl   *globlp         The pointer to the first
1126  *                                      globl structure
1127  *              globl   *gsp            Pointer to the current
1128  *                                      globl structure
1129  *              char    *ip             pointer into the REL file
1130  *                                      text line in ib[]
1131  *              int     lkerr           error flag
1132  *
1133  *      functions called:
1134  *              char    getnb()         lklex.c
1135  *              VOID *  new()           lksym.c
1136  *              int     strlen()        c_library
1137  *              char *  strcpy()        c_library
1138  *              VOID    unget()         lklex.c
1139  *
1140  *      side effects:
1141  *              The globlp structure is created.
1142  */
1143
1144 VOID
1145 gblsav()
1146 {
1147         if (globlp == NULL) {
1148                 globlp = (struct globl *)
1149                         new (sizeof (struct globl));
1150                 gsp = globlp;
1151         } else {
1152                 gsp->g_globl = (struct globl *)
1153                                 new (sizeof (struct globl));
1154                 gsp = gsp->g_globl;
1155         }
1156         unget(getnb());
1157         gsp->g_strp = (char *) new (strlen(ip)+1);
1158         strcpy(gsp->g_strp, ip);
1159 }
1160
1161 /*)Function     VOID    setgbl()
1162  *
1163  *      The function setgbl() scans the global variable lines in hte
1164  *      globlp structure, evaluates the arguments, and sets a variable
1165  *      to this value.
1166  *
1167  *      local variables:
1168  *              int     v               expression value
1169  *              char    id[]            base id string
1170  *              sym *   sp              pointer to a symbol structure
1171  *
1172  *      global variables:
1173  *              char    *ip             pointer into the REL file
1174  *                                      text line in ib[]
1175  *              globl   *globlp         The pointer to the first
1176  *                                      globl structure
1177  *              globl   *gsp            Pointer to the current
1178  *                                      globl structure
1179  *              FILE *  stderr          c_library
1180  *              int     lkerr           error flag
1181  *
1182  *       functions called:
1183  *              Addr_T  expr()          lkeval.c
1184  *              int     fprintf()       c_library
1185  *              VOID    getid()         lklex.c
1186  *              char    getnb()         lklex.c
1187  *              sym *   lkpsym()        lksym.c
1188  *
1189  *      side effects:
1190  *              The value of a variable is set.
1191  */
1192
1193 VOID
1194 setgbl()
1195 {
1196         register int v;
1197         register struct sym *sp;
1198         char id[NCPS];
1199
1200         gsp = globlp;
1201         while (gsp) {
1202                 ip = gsp->g_strp;
1203                 getid(id, -1);
1204                 if (getnb() == '=') {
1205                         v = expr(0);
1206                         sp = lkpsym(id, 0);
1207                         if (sp == NULL) {
1208 #ifndef SDK
1209                                 fprintf(stderr,
1210                                 "No definition of symbol %s\n", id);
1211                                 lkerr++;
1212 #endif /* SDK */
1213                         } else {
1214 #ifndef SDK
1215                                 if (sp->s_flag & S_DEF) {
1216                                         fprintf(stderr,
1217                                         "Redefinition of symbol %s\n", id);
1218                                         lkerr++;
1219                                         sp->s_axp = NULL;
1220                                 }
1221 #endif /* SDK */
1222                                 sp->s_addr = v;
1223                                 sp->s_type |= S_DEF;
1224                         }
1225                 } else {
1226                         fprintf(stderr, "No '=' in global expression");
1227                         lkerr++;
1228                 }
1229                 gsp = gsp->g_globl;
1230         }
1231 }
1232
1233 /*)Function     FILE *  afile(fn,, ft, wf)
1234  *
1235  *              char *  fn              file specification string
1236  *              char *  ft              file type string
1237  *              int     wf              read(0)/write(1) flag
1238  *
1239  *      The function afile() opens a file for reading or writing.
1240  *              (1)     If the file type specification string ft
1241  *                      is not NULL then a file specification is
1242  *                      constructed with the file path\name in fn
1243  *                      and the extension in ft.
1244  *              (2)     If the file type specification string ft
1245  *                      is NULL then the file specification is
1246  *                      constructed from fn.  If fn does not have
1247  *                      a file type then the default .rel file
1248  *                      type is appended to the file specification.
1249  *
1250  *      afile() returns a file handle for the opened file or aborts
1251  *      the assembler on an open error.
1252  *
1253  *      local variables:
1254  *              int     c               character value
1255  *              char    fb[]            constructed file specification string
1256  *              FILE *  fp              filehandle for opened file
1257  *              char *  p1              pointer to filespec string fn
1258  *              char *  p2              pointer to filespec string fb
1259  *              char *  p3              pointer to filetype string ft
1260  *
1261  *      global variables:
1262  *              int     lkerr           error flag
1263  *
1264  *      functions called:
1265  *              FILE *  fopen()         c_library
1266  *              int     fprintf()       c_library
1267  *
1268  *      side effects:
1269  *              File is opened for read or write.
1270  */
1271
1272 FILE *
1273 afile(fn, ft, wf)
1274 char *fn;
1275 char *ft;
1276 {
1277         register char *p1, *p2, *p3;
1278         register int c;
1279         FILE *fp;
1280         char fb[FILSPC];
1281
1282         p1 = fn;
1283         p2 = fb;
1284         p3 = ft;
1285         while ((c = *p1++) != 0 && c != FSEPX) {
1286                 if (p2 < &fb[FILSPC-4])
1287                         *p2++ = c;
1288         }
1289         *p2++ = FSEPX;
1290         if (*p3 == 0) {
1291                 if (c == FSEPX) {
1292                         p3 = p1;
1293                 } else {
1294 #ifdef SDK
1295                         p3 = "rel";
1296 #else /* SDK */
1297                         p3 = "REL";
1298 #endif /* SDK */
1299                 }
1300         }
1301         while ((c = *p3++) != 0) {
1302                 if (p2 < &fb[FILSPC-1])
1303                         *p2++ = c;
1304         }
1305         *p2++ = 0;
1306 #ifdef SDK
1307         if ((fp = fopen(fb, wf?(binary?"wb":"w"):(binary?"rb":"r"))) == NULL) {
1308 #else /* SDK */
1309         if ((fp = fopen(fb, wf?"w":"r")) == NULL) {
1310 #endif /* SDK */
1311                 fprintf(stderr, "%s: cannot %s.\n", fb, wf?"create":"open");
1312                 lkerr++;
1313         }
1314         return (fp);
1315 }
1316
1317 char *usetxt[] = {
1318 #ifdef SDK
1319         "Distributed with SDK " SDK_VERSION_STRING ", built on " __DATE__ " " __TIME__,
1320         "Compile options: SDK Target " TARGET_STRING
1321 #ifdef INDEXLIB
1322         " INDEXLIB"
1323 #endif
1324         "\n",
1325 #endif
1326         "Startup:",
1327 #ifdef SDK
1328         "  --   [Commands]              Non-interactive command line input",
1329 #endif /* SDK */
1330         "  -c                           Command line input",
1331         "  -f   file[LNK]               File input",
1332         "  -p   Prompt and echo of file[LNK] to stdout (default)",
1333         "  -n   No echo of file[LNK] to stdout",
1334 #ifdef SDK
1335         "Usage: [-Options] outfile file [file ...]",
1336 #else /* SDK */
1337         "Usage: [-Options] file [file ...]",
1338 #endif /* SDK */
1339         "Librarys:",
1340         "  -k   Library path specification, one per -k",
1341         "  -l   Library file specification, one per -l",
1342         "Relocation:",
1343         "  -b   area base address = expression",
1344         "  -g   global symbol = expression",
1345 #ifdef GAMEBOY
1346         "  -yo  Number of rom banks (default: 2)",
1347         "  -ya  Number of ram banks (default: 0)",
1348         "  -yt  MBC type (default: no MBC)",
1349         "  -yn  Name of program (default: name of output file)",
1350         "  -yp# Patch one byte in the output GB file (# is: addr=byte)",
1351 #endif /* GAMEBOY */
1352         "Map format:",
1353         "  -m   Map output generated as file[MAP]",
1354 #ifdef SDK
1355         "  -j   no$gmb symbol file generated as file[SYM]",
1356 #endif /* SDK */
1357         "  -x   Hexidecimal (default)",
1358         "  -d   Decimal",
1359         "  -q   Octal",
1360         "Output:",
1361         "  -i   Intel Hex as file[IHX]",
1362         "  -s   Motorola S19 as file[S19]",
1363 #ifdef SDK
1364 #ifdef GAMEGEAR
1365         "  -z   Gamegear image as file[GG]",
1366 #else
1367         "  -z   Gameboy image as file[GB]",
1368 #endif /* GAMEGEAR */
1369 #endif /* SDK */
1370         "List:",
1371         "  -u   Update listing file(s) with link data as file(s)[.RST]",
1372         "End:",
1373         "  -e   or null line terminates input",
1374         "",
1375         0
1376 };
1377
1378 /*)Function     VOID    usage()
1379  *
1380  *      The function usage() outputs to the stderr device the
1381  *      assembler name and version and a list of valid assembler options.
1382  *
1383  *      local variables:
1384  *              char ** dp              pointer to an array of
1385  *                                      text string pointers.
1386  *
1387  *      global variables:
1388  *              FILE *  stderr          c_library
1389  *
1390  *      functions called:
1391  *              int     fprintf()       c_library
1392  *
1393  *      side effects:
1394  *              none
1395  */
1396
1397 VOID
1398 usage()
1399 {
1400         register char   **dp;
1401
1402         fprintf(stderr, "\nASxxxx Linker %s\n\n", VERSION);
1403         for (dp = usetxt; *dp; dp++)
1404                 fprintf(stderr, "%s\n", *dp);
1405         lkexit(1);
1406 }