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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 #include <stdlib.h>
  20
  21 #ifndef SDK_VERSION_STRING
  22 #define SDK_VERSION_STRING      "3.0.0"
  23 #endif
  24 #ifndef TARGET_STRING
  25 #define TARGET_STRING           "gbz80"
  26 #endif
  27
  28 #ifdef WIN32T
  29 #include <time.h>
  30
  31 void Timer(int action, char * message)
  32 {
  33         static double start, end, total=0.0;
  34     static const double secs_per_tick = 1.0 / CLOCKS_PER_SEC;
  35
  36     if(action==0) start=clock()*secs_per_tick;
  37     else if(action==1)
  38     {
  39         end=clock() * secs_per_tick;
  40                 printf("%s \t%f seconds.\n", message, (end-start));
  41                 total+=end-start;
  42     }
  43     else
  44     {
  45                 printf("Total time: \t%f seconds.\n", total);
  46                 total=0.0;
  47     }
  48 }
  49 #endif
  50
  51 /*)Module       lkmain.c
  52  *
  53  *      The module lkmain.c contains the functions which
  54  *      (1) input the linker options, parameters, and specifications
  55  *      (2) perform a two pass link
  56  *      (3) produce the appropriate linked data output and/or
  57  *          link map file and/or relocated listing files.
  58  *
  59  *      lkmain.c contains the following functions:
  60  *              FILE *  afile(fn,ft,wf)
  61  *              VOID    bassav()
  62  *              VOID    gblsav()
  63  *              VOID    link()
  64  *              VOID    lkexit()
  65  *              VOID    main(argc,argv)
  66  *              VOID    map()
  67  *              int     parse()
  68  *              VOID    setbas()
  69  *              VOID    setgbl()
  70  *              VOID    usage()
  71  *
  72  *      lkmain.c contains the following local variables:
  73  *              char *  usetext[]       array of pointers to the
  74  *                                      command option tect lines
  75  *
  76  */
  77
  78 /*)Function     VOID    main(argc,argv)
  79  *
  80  *              int     argc            number of command line arguments + 1
  81  *              char *  argv[]          array of pointers to the command line
  82  *                                      arguments
  83  *
  84  *      The function main() evaluates the command line arguments to
  85  *      determine if the linker parameters are to input through 'stdin'
  86  *      or read from a command file.  The functiond getline() and parse()
  87  *      are to input and evaluate the linker parameters.  The linking process
  88  *      proceeds by making the first pass through each .rel file in the order
  89  *      presented to the linker.  At the end of the first pass the setbase(),
  90  *      lnkarea(), setgbl(), and symdef() functions are called to evaluate
  91  *      the base address terms, link all areas, define global variables,
  92  *      and look for undefined symbols.  Following these routines a linker
  93  *      map file may be produced and the linker output files may be opened.
  94  *      The second pass through the .rel files will output the linked data
  95  *      in one of the four supported formats.
  96  *
  97  *      local variables:
  98  *              char *  p               pointer to an argument string
  99  *              int     c               character from argument string
 100  *              int     i               loop counter
 101  *
 102  *      global variables:
 103  *                                      text line in ib[]
 104  *              lfile   *cfp            The pointer *cfp points to the
 105  *                                      current lfile structure
 106  *              char    ctype[]         array of character types, one per
 107  *                                      ASCII character
 108  *              lfile   *filep          The pointer *filep points to the
 109  *                                      beginning of a linked list of
 110  *                                      lfile structures.
 111  *              head    *hp             Pointer to the current
 112  *                                      head structure
 113  *              char    ib[NINPUT]      .rel file text line
 114  *              char    *ip             pointer into the .rel file
 115  *              lfile   *linkp          pointer to first lfile structure
 116  *                                      containing an input .rel file
 117  *                                      specification
 118  *              int     lkerr           error flag
 119  *              int     mflag           Map output flag
 120  *              int     oflag           Output file type flag
 121  *              FILE    *ofp            Output file handle
 122  *                                      for word formats
 123  *              FILE    *ofph           Output file handle
 124  *                                      for high byte format
 125  *              FILE    *ofpl           Output file handle
 126  *                                      for low byte format
 127  *              int     pass            linker pass number
 128  *              int     pflag           print linker command file flag
 129  *              int     radix           current number conversion radix
 130  *              FILE    *sfp            The file handle sfp points to the
 131  *                                      currently open file
 132  *              lfile   *startp         asmlnk startup file structure
 133  *              FILE *  stdin           c_library
 134  *              FILE *  stdout          c_library
 135  *
 136  *      functions called:
 137  *              FILE *  afile()         lkmain.c
 138  *              int     fclose()        c_library
 139  *              int     fprintf()       c_library
 140  *              int     getline()       lklex.c
 141  *              VOID    library()       lklibr.c
 142  *              VOID    link()          lkmain.c
 143  *              VOID    lkexit()        lkmain.c
 144  *              VOID    lnkarea()       lkarea.c
 145  *              VOID    map()           lkmain.c
 146  *              VOID    new()           lksym.c
 147  *              int     parse()         lkmain.c
 148  *              VOID    reloc()         lkreloc.c
 149  *              VOID    search()        lklibr.c
 150  *              VOID    setbas()        lkmain.c
 151  *              VOID    setgbl()        lkmain.c
 152  *              VOID    symdef()        lksym.c
 153  *              VOID    usage()         lkmain.c
 154  *
 155  *      side effects:
 156  *              Completion of main() completes the linking process
 157  *              and may produce a map file (.map) and/or a linked
 158  *              data files (.ihx or .s19) and/or one or more
 159  *              relocated listing files (.rst).
 160  */
 161
 162 #ifdef SDK
 163 int binary = 0;
 164 #endif /* SDK */
 165 #ifdef GAMEBOY
 166 char *default_basep[] = {
 167   "_CODE=0x0200",
 168   "_DATA=0xC0A0",
 169   NULL
 170 };
 171
 172 char *default_globlp[] = {
 173   /* DMA transfer must start at multiples of 0x100 */
 174   ".OAM=0xC000",
 175   ".STACK=0xE000",
 176   ".refresh_OAM=0xFF80",
 177
 178   ".init=0x0000",
 179
 180   NULL
 181 };
 182 #endif /* GAMEBOY */
 183
 184 int
 185 main(argc, argv)
 186 char *argv[];
 187 {
 188         register char *p;
 189         register int c, i;
 190
 191 #ifdef WIN32T
 192     Timer(0, "");
 193 #endif
 194
 195 #ifdef GAMEBOY
 196         nb_rom_banks = 2;
 197         nb_ram_banks = 0;
 198         mbc_type = 0;
 199         symflag=0;
 200
 201         for(i = 0; default_basep[i] != NULL; i++) {
 202                 if(basep == NULL) {
 203                         basep = (struct base *)new(sizeof(struct base));
 204                         bsp = basep;
 205                 } else {
 206                         bsp->b_base = (struct base *)new(sizeof(struct base));
 207                         bsp = bsp->b_base;
 208                 }
 209                 bsp->b_strp = default_basep[i];
 210         }
 211         for(i = 0; default_globlp[i] != NULL; i++) {
 212                 if(globlp == NULL) {
 213                         globlp = (struct globl *)new(sizeof(struct globl));
 214                         gsp = globlp;
 215                 } else {
 216                         gsp->g_globl = (struct globl *)new(sizeof(struct globl));
 217                         gsp = gsp->g_globl;
 218                 }
 219                 gsp->g_strp = default_globlp[i];
 220         }
 221 #endif /* GAMEBOY */
 222 #ifndef SDK
 223         fprintf(stdout, "\n");
 224 #endif /* SDK */
 225
 226         startp = (struct lfile *) new (sizeof (struct lfile));
 227
 228         pflag = 1;
 229         for (i=1; i<argc; ++i) {
 230                 p = argv[i];
 231                 if (*p == '-') {
 232                         while (ctype[c = *(++p)] & LETTER) {
 233                                 switch(c) {
 234
 235                                 case 'c':
 236                                 case 'C':
 237                                         startp->f_type = F_STD;
 238                                         break;
 239
 240                                 case 'f':
 241                                 case 'F':
 242                                         startp->f_type = F_LNK;
 243                                         break;
 244
 245                                 case 'n':
 246                                 case 'N':
 247                                         pflag = 0;
 248                                         break;
 249
 250                                 case 'p':
 251                                 case 'P':
 252                                         pflag = 1;
 253                                         break;
 254
 255                                 default:
 256                                         usage();
 257                                 }
 258                         }
 259
 260 #ifdef SDK
 261                         if(c == '-') {
 262                                 startp->f_type = F_CMD;
 263                                 startp->f_idp = (char *)&argv[i+1];
 264                                 break;
 265                         }
 266 #endif /* SDK */
 267
 268                 } else {
 269                         if (startp->f_type == F_LNK) {
 270                                 startp->f_idp = p;
 271                         }
 272                 }
 273         }
 274         if (startp->f_type == F_INV)
 275                 usage();
 276         if (startp->f_type == F_LNK && startp->f_idp == NULL)
 277                 usage();
 278 #ifdef SDK
 279         if (startp->f_type == F_CMD && startp->f_idp == NULL)
 280                 usage();
 281 #endif /* SDK */
 282
 283         cfp = NULL;
 284         sfp = NULL;
 285         filep = startp;
 286         while (1) {
 287                 ip = ib;
 288                 if (getline() == 0)
 289                         break;
 290                 if (pflag && sfp != stdin)
 291                         fprintf(stdout, "%s\n", ip);
 292                 if (*ip == '\0' || parse())
 293                         break;
 294         }
 295         if (sfp)
 296                 fclose(sfp);
 297         if (linkp == NULL)
 298                 usage();
 299 #ifdef SDK
 300         if (linkp->f_flp == NULL)
 301                 usage();
 302 #endif /* SDK */
 303
 304 #ifdef GAMEBOY
 305         for(i = 1; i < nb_rom_banks; i++) {
 306                 bsp->b_base = (struct base *)new(sizeof(struct base));
 307                 bsp = bsp->b_base;
 308                 bsp->b_strp = (char *)malloc(18);
 309                 sprintf(bsp->b_strp, "_CODE_%d=0x4000", i);
 310         }
 311         for(i = 0; i < nb_ram_banks; i++) {
 312                 bsp->b_base = (struct base *)new(sizeof(struct base));
 313                 bsp = bsp->b_base;
 314                 bsp->b_strp = (char *)malloc(18);
 315                 sprintf(bsp->b_strp, "_DATA_%d=0xA000", i);
 316         }
 317 #endif /* GAMEBOY */
 318
 319         syminit();
 320         for (pass=0; pass<2; ++pass) {
 321                 cfp = NULL;
 322                 sfp = NULL;
 323 #ifdef SDK
 324                 filep = linkp->f_flp;
 325 #else /* SDK */
 326                 filep = linkp;
 327 #endif /* SDK */
 328                 hp = NULL;
 329                 radix = 10;
 330
 331                 while (getline()) {
 332                         ip = ib;
 333                         link();
 334                 }
 335                 if (pass == 0) {
 336                         /*
 337                          * Search libraries for global symbols
 338                          */
 339                         search();
 340                         /*
 341                          * Set area base addresses.
 342                          */
 343                         setbas();
 344                         /*
 345                          * Link all area addresses.
 346                          */
 347                         lnkarea();
 348                         /*
 349                          * Process global definitions.
 350                          */
 351                         setgbl();
 352                         /*
 353                          * Check for undefined globals.
 354                          */
 355                         symdef(stderr);
 356 #ifdef SDK
 357                         if (symflag)
 358                                 sym();
 359 #endif
 360                         /*
 361                          * Output Link Map.
 362                          */
 363                         if (mflag)
 364                                 map();
 365                         /*
 366                          * Open output file
 367                          */
 368                         if (oflag == 1) {
 369 #ifdef SDK
 370                                 ofp = afile(linkp->f_idp, "ihx", 1);
 371 #else /* SDK */
 372                                 ofp = afile(linkp->f_idp, "IHX", 1);
 373 #endif /* SDK */
 374                                 if (ofp == NULL) {
 375                                         lkexit(1);
 376                                 }
 377                         } else
 378                         if (oflag == 2) {
 379 #ifdef SDK
 380                                 ofp = afile(linkp->f_idp, "s19", 1);
 381 #else /* SDK */
 382                                 ofp = afile(linkp->f_idp, "S19", 1);
 383 #endif /* SDK */
 384                                 if (ofp == NULL) {
 385                                         lkexit(1);
 386                                 }
 387 #ifdef SDK
 388                         } else
 389                         if (oflag == 3) {
 390                                 binary = 1;
 391                                 ofp = afile(linkp->f_idp, "", 1);
 392                                 binary = 0;
 393                                 if (ofp == NULL) {
 394                                         lkexit(1);
 395                                 }
 396 #endif /* SDK */
 397                         }
 398                 } else {
 399                         /*
 400                          * Link in library files
 401                          */
 402                         library();
 403                         reloc('E');
 404                 }
 405         }
 406 #ifdef WIN32T
 407     Timer(1, "Linker time");
 408 #endif
 409         lkexit(lkerr);
 410
 411         /* Never get here. */
 412         return 0;
 413 }
 414
 415 /*)Function     VOID    lkexit(i)
 416  *
 417  *                      int     i       exit code
 418  *
 419  *      The function lkexit() explicitly closes all open
 420  *      files and then terminates the program.
 421  *
 422  *      local variables:
 423  *              none
 424  *
 425  *      global variables:
 426  *              FILE *  mfp             file handle for .map
 427  *              FILE *  ofp             file handle for .ihx/.s19
 428  *              FILE *  rfp             file hanlde for .rst
 429  *              FILE *  sfp             file handle for .rel
 430  *              FILE *  tfp             file handle for .lst
 431  *
 432  *      functions called:
 433  *              int     fclose()        c_library
 434  *              VOID    exit()          c_library
 435  *
 436  *      side effects:
 437  *              All files closed. Program terminates.
 438  */
 439
 440 VOID
 441 lkexit(i)
 442 int i;
 443 {
 444         if (mfp != NULL) fclose(mfp);
 445         if (ofp != NULL) fclose(ofp);
 446         if (rfp != NULL) fclose(rfp);
 447         if (sfp != NULL) fclose(sfp);
 448         if (tfp != NULL) fclose(tfp);
 449         exit(i);
 450 }
 451
 452 /*)Function     link()
 453  *
 454  *      The function link() evaluates the directives for each line of
 455  *      text read from the .rel file(s).  The valid directives processed
 456  *      are:
 457  *              X, D, Q, H, M, A, S, T, R, and P.
 458  *
 459  *      local variables:
 460  *              int     c               first non blank character of a line
 461  *
 462  *      global variables:
 463  *              head    *headp          The pointer to the first
 464  *                                      head structure of a linked list
 465  *              head    *hp             Pointer to the current
 466  *                                      head structure
 467  *              int     pass            linker pass number
 468  *              int     radix           current number conversion radix
 469  *
 470  *      functions called:
 471  *              char    endline()       lklex.c
 472  *              VOID    module()        lkhead.c
 473  *              VOID    newarea()       lkarea.c
 474  *              VOID    newhead()       lkhead.c
 475  *              sym *   newsym()        lksym.c
 476  *              VOID    reloc()         lkreloc.c
 477  *
 478  *      side effects:
 479  *              Head, area, and symbol structures are created and
 480  *              the radix is set as the .rel file(s) are read.
 481  */
 482
 483 VOID
 484 link()
 485 {
 486         register int c;
 487
 488         if ((c=endline()) == 0) { return; }
 489         switch (c) {
 490
 491         case 'X':
 492                 radix = 16;
 493                 break;
 494
 495         case 'D':
 496                 radix = 10;
 497                 break;
 498
 499         case 'Q':
 500                 radix = 8;
 501                 break;
 502
 503         case 'H':
 504                 if (pass == 0) {
 505                         newhead();
 506                 } else {
 507                         if (hp == 0) {
 508                                 hp = headp;
 509                         } else {
 510                                 hp = hp->h_hp;
 511                         }
 512                 }
 513                 sdp.s_area = NULL;
 514                 sdp.s_areax = NULL;
 515                 sdp.s_addr = 0;
 516                 break;
 517
 518         case 'M':
 519                 if (pass == 0)
 520                         module();
 521                 break;
 522
 523         case 'A':
 524                 if (pass == 0)
 525                         newarea();
 526                 if (sdp.s_area == NULL) {
 527                         sdp.s_area = areap;
 528                         sdp.s_areax = areap->a_axp;
 529                         sdp.s_addr = 0;
 530                 }
 531                 break;
 532
 533         case 'S':
 534                 if (pass == 0)
 535                         newsym();
 536                 break;
 537
 538         case 'T':
 539         case 'R':
 540         case 'P':
 541                 if (pass == 0)
 542                         break;
 543                 reloc(c);
 544                 break;
 545
 546         default:
 547                 break;
 548         }
 549         if (c == 'X' || c == 'D' || c == 'Q') {
 550                 if ((c = get()) == 'H') {
 551                         hilo = 1;
 552                 } else
 553                 if (c == 'L') {
 554                         hilo = 0;
 555                 }
 556         }
 557 }
 558
 559 /*)Function     VOID    map()
 560  *
 561  *      The function map() opens the output map file and calls the various
 562  *      routines to
 563  *      (1) output the variables in each area,
 564  *      (2) list the files processed with module names,
 565  *      (3) list the libraries file processed,
 566  *      (4) list base address definitions,
 567  *      (5) list global variable definitions, and
 568  *      (6) list any undefined variables.
 569  *
 570  *      local variables:
 571  *              int     i               counter
 572  *              head *  hdp             pointer to head structure
 573  *              lbfile *lbfh            pointer to library file structure
 574  *
 575  *      global variables:
 576  *              area    *ap             Pointer to the current
 577  *                                      area structure
 578  *              area    *areap          The pointer to the first
 579  *                                      area structure of a linked list
 580  *              base    *basep          The pointer to the first
 581  *                                      base structure
 582  *              base    *bsp            Pointer to the current
 583  *                                      base structure
 584  *              lfile   *filep          The pointer *filep points to the
 585  *                                      beginning of a linked list of
 586  *                                      lfile structures.
 587  *              globl   *globlp         The pointer to the first
 588  *                                      globl structure
 589  *              globl   *gsp            Pointer to the current
 590  *                                      globl structure
 591  *              head    *headp          The pointer to the first
 592  *                                      head structure of a linked list
 593  *              lbfile  *lbfhead        The pointer to the first
 594  *                                      lbfile structure of a linked list
 595  *              lfile   *linkp          pointer to first lfile structure
 596  *                                      containing an input REL file
 597  *                                      specification
 598  *              int     lop             current line number on page
 599  *              FILE    *mfp            Map output file handle
 600  *              int     page            current page number
 601  *
 602  *      functions called:
 603  *              FILE *  afile()         lkmain.c
 604  *              int     fprintf()       c_library
 605  *              VOID    lkexit()        lkmain.c
 606  *              VOID    lstarea()       lklist.c
 607  *              VOID    newpag()        lklist.c
 608  *              VOID    symdef()        lksym.c
 609  *
 610  *      side effects:
 611  *              The map file is created.
 612  */
 613
 614 #ifndef MLH_MAP
 615 VOID
 616 map()
 617 {
 618         register i;
 619         register struct head *hdp;
 620         register struct lbfile *lbfh;
 621
 622         /*
 623          * Open Map File
 624          */
 625 #ifdef SDK
 626         mfp = afile(linkp->f_idp, "map", 1);
 627 #else /* SDK */
 628         mfp = afile(linkp->f_idp, "MAP", 1);
 629 #endif /* SDK */
 630         if (mfp == NULL) {
 631                 lkexit(1);
 632         }
 633
 634         /*
 635          * Output Map Area Lists
 636          */
 637         page = 0;
 638         lop  = NLPP;
 639         ap = areap;
 640         while (ap) {
 641                 lstarea(ap);
 642                 ap = ap->a_ap;
 643         }
 644         /*
 645          * List Linked Files
 646          */
 647         newpag(mfp);
 648         fprintf(mfp, "\nFiles Linked      [ module(s) ]\n\n");
 649         hdp = headp;
 650 #ifdef SDK
 651         filep = linkp->f_flp;
 652 #else /* SDK */
 653         filep = linkp;
 654 #endif /* SDK */
 655         while (filep) {
 656                 fprintf(mfp, "%-16s", filep->f_idp);
 657                 i = 0;
 658                 while ((hdp != NULL) && (hdp->h_lfile == filep)) {
 659                         if (i % 5) {
 660                             fprintf(mfp, ", %8.8s", hdp->m_id);
 661                         } else {
 662                             if (i) {
 663                                 fprintf(mfp, ",\n%20s%8.8s", "", hdp->m_id);
 664                             } else {
 665                                 fprintf(mfp, "  [ %8.8s", hdp->m_id);
 666                             }
 667                         }
 668                         hdp = hdp->h_hp;
 669                         i++;
 670                 }
 671                 if (i)
 672                         fprintf(mfp, " ]");
 673                 fprintf(mfp, "\n");
 674                 filep = filep->f_flp;
 675         }
 676         /*
 677          * List Linked Libraries
 678          */
 679         if (lbfhead != NULL) {
 680                 fprintf(mfp,
 681         "\nLibraries Linked                    [   object  file   ]\n\n");
 682                 for (lbfh=lbfhead; lbfh; lbfh=lbfh->next) {
 683                         fprintf(mfp, "%-32s    [ %16.16s ]\n",
 684                                 lbfh->libspc, lbfh->relfil);
 685                 }
 686                 fprintf(mfp, "\n");
 687         }
 688         /*
 689          * List Base Address Definitions
 690          */
 691         if (basep) {
 692                 newpag(mfp);
 693                 fprintf(mfp, "\nUser Base Address Definitions\n\n");
 694                 bsp = basep;
 695                 while (bsp) {
 696                         fprintf(mfp, "%s\n", bsp->b_strp);
 697                         bsp = bsp->b_base;
 698                 }
 699         }
 700         /*
 701          * List Global Definitions
 702          */
 703         if (globlp) {
 704                 newpag(mfp);
 705                 fprintf(mfp, "\nUser Global Definitions\n\n");
 706                 gsp = globlp;
 707                 while (gsp) {
 708                         fprintf(mfp, "%s\n", gsp->g_strp);
 709                         gsp = gsp->g_globl;
 710                 }
 711         }
 712         fprintf(mfp, "\n\f");
 713         symdef(mfp);
 714 }
 715 #else
 716 VOID map()
 717 {
 718         register struct head *hdp;
 719         register struct lbfile *lbfh;
 720
 721         /*
 722          * Open Map File
 723          */
 724 #ifdef SDK
 725         mfp = afile(linkp->f_idp, "map", 1);
 726 #else /* SDK */
 727         mfp = afile(linkp->f_idp, "MAP", 1);
 728 #endif /* SDK */
 729         if (mfp == NULL) {
 730                 lkexit(1);
 731         }
 732
 733         /*
 734          *Output Map Area Lists
 735          */
 736         page = 0;
 737         lop  = NLPP;
 738         ap = areap;
 739         while (ap) {
 740                 lstarea(ap);
 741                 ap = ap->a_ap;
 742         }
 743         /*
 744          * List Linked Files
 745          */
 746         hdp = headp;
 747 #ifdef SDK
 748         filep = linkp->f_flp;
 749 #else /* SDK */
 750         filep = linkp;
 751 #endif /* SDK */
 752         if (filep) {
 753                 fprintf( mfp, "MODULES\n");
 754         }
 755         while (filep) {
 756                 fprintf(mfp, "\tFILE %s\n", filep->f_idp);
 757                 while ((hdp != NULL) && (hdp->h_lfile == filep)) {
 758                         if (strlen(hdp->m_id)>0)
 759                                 fprintf(mfp, "\t\tNAME %s\n", hdp->m_id);
 760                         hdp = hdp->h_hp;
 761                 }
 762                 filep = filep->f_flp;
 763         }
 764         /*
 765          * List Linked Libraries
 766          */
 767         if (lbfhead != NULL) {
 768                 fprintf(mfp, "LIBRARIES\n");
 769                 for (lbfh=lbfhead; lbfh; lbfh=lbfh->next) {
 770                         fprintf(mfp,    "\tLIBRARY %s\n"
 771                                         "\t\tMODULE %s\n",
 772                                 lbfh->libspc, lbfh->relfil);
 773                 }
 774         }
 775         /*
 776          * List Base Address Definitions
 777          */
 778         if (basep) {
 779                 fprintf(mfp, "USERBASEDEF\n");
 780                 bsp = basep;
 781                 while (bsp) {
 782                         fprintf(mfp, "\t%s\n", bsp->b_strp);
 783                         bsp = bsp->b_base;
 784                 }
 785         }
 786         /*
 787          * List Global Definitions
 788          */
 789         if (globlp) {
 790                 fprintf(mfp, "USERGLOBALDEF\n");
 791                 gsp = globlp;
 792                 while (gsp) {
 793                         fprintf(mfp, "\t%s\n", gsp->g_strp);
 794                         gsp = gsp->g_globl;
 795                 }
 796         }
 797         symdef(mfp);
 798 #ifdef SDK
 799         if (mfp!=NULL) {
 800                 fclose(mfp);
 801                 mfp = NULL;
 802         }
 803 #endif
 804 }
 805 #endif /* MLH_MAP */
 806
 807 #ifdef SDK
 808 /* PENDING */
 809 VOID lstareatosym(struct area *xp);
 810
 811 VOID sym()
 812 {
 813         /*
 814          * Open sym File
 815          */
 816         mfp = afile(linkp->f_idp, "sym", 1);
 817         if (mfp == NULL) {
 818                 lkexit(1);
 819         }
 820         fprintf( mfp,   "; no$gmb format .sym file\n"
 821                         "; Generated automagically by ASxxxx linker %s (SDK " SDK_VERSION_STRING ")\n"
 822                 , VERSION );
 823         /*
 824          * Output sym Area Lists
 825          */
 826         page = 0;
 827         lop  = NLPP;
 828         ap = areap;
 829         while (ap) {
 830                 lstareatosym(ap);
 831                 ap = ap->a_ap;
 832         }
 833         if (mfp!=NULL) {
 834                 fclose(mfp);
 835                 mfp = NULL;
 836         }
 837 }
 838 #endif /* SDK */
 839
 840 /*)Function     int     parse()
 841  *
 842  *      The function parse() evaluates all command line or file input
 843  *      linker directives and updates the appropriate variables.
 844  *
 845  *      local variables:
 846  *              int     c               character value
 847  *              char    fid[]           file id string
 848  *
 849  *      global variables:
 850  *              char    ctype[]         array of character types, one per
 851  *                                      ASCII character
 852  *              lfile   *lfp            pointer to current lfile structure
 853  *                                      being processed by parse()
 854  *              lfile   *linkp          pointer to first lfile structure
 855  *                                      containing an input REL file
 856  *                                      specification
 857  *              int     mflag           Map output flag
 858  *              int     oflag           Output file type flag
 859  *              int     pflag           print linker command file flag
 860  *              FILE *  stderr          c_library
 861  *              int     uflag           Relocated listing flag
 862  *              int     xflag           Map file radix type flag
 863  *
 864  *      Functions called:
 865  *              VOID    addlib()        lklibr.c
 866  *              VOID    addpath()       lklibr.c
 867  *              VOID    bassav()        lkmain.c
 868  *              int     fprintf()       c_library
 869  *              VOID    gblsav()        lkmain.c
 870  *              VOID    getfid()        lklex.c
 871  *              char    getnb()         lklex.c
 872  *              VOID    lkexit()        lkmain.c
 873  *              char *  strcpy()        c_library
 874  *              int     strlen()        c_library
 875  *
 876  *      side effects:
 877  *              Various linker flags are updated and the linked
 878  *              structure lfile is created.
 879  */
 880
 881 int
 882 parse()
 883 {
 884         register int c;
 885         char fid[NINPUT];
 886
 887         while ((c = getnb()) != 0) {
 888                 if ( c == '-') {
 889                         while (ctype[c=get()] & LETTER) {
 890                                 switch(c) {
 891
 892                                 case 'i':
 893                                 case 'I':
 894                                         oflag = 1;
 895                                         break;
 896
 897                                 case 's':
 898                                 case 'S':
 899                                         oflag = 2;
 900                                         break;
 901 #ifdef GAMEBOY
 902                                 case 'y':
 903                                 case 'Y':
 904                                         c = get();
 905                                         if(c == 'O' || c == 'o')
 906                                                 nb_rom_banks = expr(0);
 907                                         else if(c == 'A' || c == 'a')
 908                                                 nb_ram_banks = expr(0);
 909                                         else if(c == 'T' || c == 't')
 910                                                 mbc_type = expr(0);
 911                                         else if(c == 'N' || c == 'n') {
 912                                                 int i = 0;
 913                                                 if(getnb() != '=' || getnb() != '"') {
 914                                                         fprintf(stderr, "Syntax error in -YN=\"name\" flag\n");
 915                                                         lkexit(1);
 916                                                 }
 917                                                 while((c = get()) != '"' && i < 16) {
 918                                                         cart_name[i++] = c;
 919                                                 }
 920                                                 if(i < 16)
 921                                                         cart_name[i] = 0;
 922                                                 else
 923                                                         while(get() != '"')
 924                                                                 ;
 925                                         } else if(c == 'P' || c == 'p') {
 926                                                 patch *p = patches;
 927
 928                                                 patches = (patch *)malloc(sizeof(patch));
 929                                                 patches->next = p;
 930                                                 patches->addr = expr(0);
 931                                                 if(getnb() != '=') {
 932                                                         fprintf(stderr, "Syntax error in -YHaddr=val flag\n");
 933                                                         lkexit(1);
 934                                                 }
 935                                                 patches->value = expr(0);
 936                                         } else {
 937                                                 fprintf(stderr, "Invalid option\n");
 938                                                 lkexit(1);
 939                                         }
 940                                         break;
 941
 942 #endif /* GAMEBOY */
 943 #ifdef SDK
 944                                 case 'j':
 945                                 case 'J':
 946                                         ++symflag;
 947                                         break;
 948                                 case 'z':
 949                                 case 'Z':
 950                                         oflag = 3;
 951                                         break;
 952 #endif /* SDK */
 953                                 case 'm':
 954                                 case 'M':
 955                                         ++mflag;
 956                                         break;
 957
 958                                 case 'u':
 959                                 case 'U':
 960                                         uflag = 1;
 961                                         break;
 962
 963                                 case 'x':
 964                                 case 'X':
 965                                         xflag = 0;
 966                                         break;
 967
 968                                 case 'q':
 969                                 case 'Q':
 970                                         xflag = 1;
 971                                         break;
 972
 973                                 case 'd':
 974                                 case 'D':
 975                                         xflag = 2;
 976                                         break;
 977
 978                                 case 'e':
 979                                 case 'E':
 980                                         return(1);
 981
 982                                 case 'n':
 983                                 case 'N':
 984                                         pflag = 0;
 985                                         break;
 986
 987                                 case 'p':
 988                                 case 'P':
 989                                         pflag = 1;
 990                                         break;
 991
 992                                 case 'b':
 993                                 case 'B':
 994                                         bassav();
 995                                         return(0);
 996
 997                                 case 'g':
 998                                 case 'G':
 999                                         gblsav();
1000                                         return(0);
1001
1002                                 case 'k':
1003                                 case 'K':
1004                                         addpath();
1005                                         return(0);
1006
1007                                 case 'l':
1008                                 case 'L':
1009                                         addlib();
1010                                         return(0);
1011
1012                                 default:
1013                                         fprintf(stderr, "Invalid option\n");
1014                                         lkexit(1);
1015                                 }
1016                         }
1017                 } else
1018                 if (ctype[c] != ILL) {
1019                         if (linkp == NULL) {
1020                                 linkp = (struct lfile *)
1021                                         new (sizeof (struct lfile));
1022                                 lfp = linkp;
1023                         } else {
1024                                 lfp->f_flp = (struct lfile *)
1025                                                 new (sizeof (struct lfile));
1026                                 lfp = lfp->f_flp;
1027                         }
1028                         getfid(fid, c);
1029                         lfp->f_idp = (char *) new (strlen(fid)+1);
1030                         strcpy(lfp->f_idp, fid);
1031                         lfp->f_type = F_REL;
1032                 } else {
1033                         fprintf(stderr, "Invalid input");
1034                         lkexit(1);
1035                 }
1036         }
1037         return(0);
1038 }
1039
1040 /*)Function     VOID    bassav()
1041  *
1042  *      The function bassav() creates a linked structure containing
1043  *      the base address strings input to the linker.
1044  *
1045  *      local variables:
1046  *              none
1047  *
1048  *      global variables:
1049  *              base    *basep          The pointer to the first
1050  *                                      base structure
1051  *              base    *bsp            Pointer to the current
1052  *                                      base structure
1053  *              char    *ip             pointer into the REL file
1054  *                                      text line in ib[]
1055  *
1056  *       functions called:
1057  *              char    getnb()         lklex.c
1058  *              VOID *  new()           lksym.c
1059  *              int     strlen()        c_library
1060  *              char *  strcpy()        c_library
1061  *              VOID    unget()         lklex.c
1062  *
1063  *      side effects:
1064  *              The basep structure is created.
1065  */
1066
1067 VOID
1068 bassav()
1069 {
1070         if (basep == NULL) {
1071                 basep = (struct base *)
1072                         new (sizeof (struct base));
1073                 bsp = basep;
1074         } else {
1075                 bsp->b_base = (struct base *)
1076                                 new (sizeof (struct base));
1077                 bsp = bsp->b_base;
1078         }
1079         unget(getnb());
1080         bsp->b_strp = (char *) new (strlen(ip)+1);
1081         strcpy(bsp->b_strp, ip);
1082 }
1083
1084 /*)Function     VOID    setbas()
1085  *
1086  *      The function setbas() scans the base address lines in hte
1087  *      basep structure, evaluates the arguments, and sets beginning
1088  *      address of the specified areas.
1089  *
1090  *      local variables:
1091  *              int     v               expression value
1092  *              char    id[]            base id string
1093  *
1094  *      global variables:
1095  *              area    *ap             Pointer to the current
1096  *                                      area structure
1097  *              area    *areap          The pointer to the first
1098  *                                      area structure of a linked list
1099  *              base    *basep          The pointer to the first
1100  *                                      base structure
1101  *              base    *bsp            Pointer to the current
1102  *                                      base structure
1103  *              char    *ip             pointer into the REL file
1104  *                                      text line in ib[]
1105  *              int     lkerr           error flag
1106  *
1107  *       functions called:
1108  *              Addr_T  expr()          lkeval.c
1109  *              int     fprintf()       c_library
1110  *              VOID    getid()         lklex.c
1111  *              char    getnb()         lklex.c
1112  *              int     symeq()         lksym.c
1113  *
1114  *      side effects:
1115  *              The base address of an area is set.
1116  */
1117
1118 VOID
1119 setbas()
1120 {
1121         register int v;
1122         char id[NCPS];
1123
1124         bsp = basep;
1125         while (bsp) {
1126                 ip = bsp->b_strp;
1127                 getid(id, -1);
1128                 if (getnb() == '=') {
1129                         v = expr(0);
1130                         for (ap = areap; ap != NULL; ap = ap->a_ap) {
1131                                 if (symeq(id, ap->a_id))
1132                                         break;
1133                         }
1134                         if (ap == NULL) {
1135 #ifndef SDK
1136                                 fprintf(stderr,
1137                                 "No definition of area %s\n", id);
1138                                 lkerr++;
1139 #endif /* SDK */
1140                         } else {
1141                                 ap->a_addr = v;
1142                         }
1143                 } else {
1144                         fprintf(stderr, "No '=' in base expression");
1145                         lkerr++;
1146                 }
1147                 bsp = bsp->b_base;
1148         }
1149 }
1150
1151 /*)Function     VOID    gblsav()
1152  *
1153  *      The function gblsav() creates a linked structure containing
1154  *      the global variable strings input to the linker.
1155  *
1156  *      local variable:
1157  *              none
1158  *
1159  *      global variables:
1160  *              globl   *globlp         The pointer to the first
1161  *                                      globl structure
1162  *              globl   *gsp            Pointer to the current
1163  *                                      globl structure
1164  *              char    *ip             pointer into the REL file
1165  *                                      text line in ib[]
1166  *              int     lkerr           error flag
1167  *
1168  *      functions called:
1169  *              char    getnb()         lklex.c
1170  *              VOID *  new()           lksym.c
1171  *              int     strlen()        c_library
1172  *              char *  strcpy()        c_library
1173  *              VOID    unget()         lklex.c
1174  *
1175  *      side effects:
1176  *              The globlp structure is created.
1177  */
1178
1179 VOID
1180 gblsav()
1181 {
1182         if (globlp == NULL) {
1183                 globlp = (struct globl *)
1184                         new (sizeof (struct globl));
1185                 gsp = globlp;
1186         } else {
1187                 gsp->g_globl = (struct globl *)
1188                                 new (sizeof (struct globl));
1189                 gsp = gsp->g_globl;
1190         }
1191         unget(getnb());
1192         gsp->g_strp = (char *) new (strlen(ip)+1);
1193         strcpy(gsp->g_strp, ip);
1194 }
1195
1196 /*)Function     VOID    setgbl()
1197  *
1198  *      The function setgbl() scans the global variable lines in hte
1199  *      globlp structure, evaluates the arguments, and sets a variable
1200  *      to this value.
1201  *
1202  *      local variables:
1203  *              int     v               expression value
1204  *              char    id[]            base id string
1205  *              sym *   sp              pointer to a symbol structure
1206  *
1207  *      global variables:
1208  *              char    *ip             pointer into the REL file
1209  *                                      text line in ib[]
1210  *              globl   *globlp         The pointer to the first
1211  *                                      globl structure
1212  *              globl   *gsp            Pointer to the current
1213  *                                      globl structure
1214  *              FILE *  stderr          c_library
1215  *              int     lkerr           error flag
1216  *
1217  *       functions called:
1218  *              Addr_T  expr()          lkeval.c
1219  *              int     fprintf()       c_library
1220  *              VOID    getid()         lklex.c
1221  *              char    getnb()         lklex.c
1222  *              sym *   lkpsym()        lksym.c
1223  *
1224  *      side effects:
1225  *              The value of a variable is set.
1226  */
1227
1228 VOID
1229 setgbl()
1230 {
1231         register int v;
1232         register struct sym *sp;
1233         char id[NCPS];
1234
1235         gsp = globlp;
1236         while (gsp) {
1237                 ip = gsp->g_strp;
1238                 getid(id, -1);
1239                 if (getnb() == '=') {
1240                         v = expr(0);
1241                         sp = lkpsym(id, 0);
1242                         if (sp == NULL) {
1243 #ifndef SDK
1244                                 fprintf(stderr,
1245                                 "No definition of symbol %s\n", id);
1246                                 lkerr++;
1247 #endif /* SDK */
1248                         } else {
1249 #ifndef SDK
1250                                 if (sp->s_flag & S_DEF) {
1251                                         fprintf(stderr,
1252                                         "Redefinition of symbol %s\n", id);
1253                                         lkerr++;
1254                                         sp->s_axp = NULL;
1255                                 }
1256 #endif /* SDK */
1257                                 sp->s_addr = v;
1258                                 sp->s_type |= S_DEF;
1259                         }
1260                 } else {
1261                         fprintf(stderr, "No '=' in global expression");
1262                         lkerr++;
1263                 }
1264                 gsp = gsp->g_globl;
1265         }
1266 }
1267
1268 /*)Function     FILE *  afile(fn,, ft, wf)
1269  *
1270  *              char *  fn              file specification string
1271  *              char *  ft              file type string
1272  *              int     wf              read(0)/write(1) flag
1273  *
1274  *      The function afile() opens a file for reading or writing.
1275  *              (1)     If the file type specification string ft
1276  *                      is not NULL then a file specification is
1277  *                      constructed with the file path\name in fn
1278  *                      and the extension in ft.
1279  *              (2)     If the file type specification string ft
1280  *                      is NULL then the file specification is
1281  *                      constructed from fn.  If fn does not have
1282  *                      a file type then the default .rel file
1283  *                      type is appended to the file specification.
1284  *
1285  *      afile() returns a file handle for the opened file or aborts
1286  *      the assembler on an open error.
1287  *
1288  *      local variables:
1289  *              int     c               character value
1290  *              char    fb[]            constructed file specification string
1291  *              FILE *  fp              filehandle for opened file
1292  *              char *  p1              pointer to filespec string fn
1293  *              char *  p2              pointer to filespec string fb
1294  *              char *  p3              pointer to filetype string ft
1295  *
1296  *      global variables:
1297  *              int     lkerr           error flag
1298  *
1299  *      functions called:
1300  *              FILE *  fopen()         c_library
1301  *              int     fprintf()       c_library
1302  *
1303  *      side effects:
1304  *              File is opened for read or write.
1305  */
1306
1307 FILE *
1308 afile(fn, ft, wf)
1309 char *fn;
1310 char *ft;
1311 {
1312         register char *p1, *p2, *p3;
1313         register int c;
1314         FILE *fp;
1315         char fb[FILSPC];
1316
1317         p1 = fn;
1318         p2 = fb;
1319         p3 = ft;
1320         while ((c = *p1++) != 0 && c != FSEPX) {
1321                 if (p2 < &fb[FILSPC-4])
1322                         *p2++ = c;
1323         }
1324         *p2++ = FSEPX;
1325         if (*p3 == 0) {
1326                 if (c == FSEPX) {
1327                         p3 = p1;
1328                 } else {
1329 #ifdef SDK
1330                         p3 = "rel";
1331 #else /* SDK */
1332                         p3 = "REL";
1333 #endif /* SDK */
1334                 }
1335         }
1336         while ((c = *p3++) != 0) {
1337                 if (p2 < &fb[FILSPC-1])
1338                         *p2++ = c;
1339         }
1340         *p2++ = 0;
1341 #ifdef SDK
1342         if ((fp = fopen(fb, wf?(binary?"wb":"w"):(binary?"rb":"r"))) == NULL) {
1343 #else /* SDK */
1344         if ((fp = fopen(fb, wf?"w":"r")) == NULL) {
1345 #endif /* SDK */
1346                 fprintf(stderr, "%s: cannot %s.\n", fb, wf?"create":"open");
1347                 lkerr++;
1348         }
1349         return (fp);
1350 }
1351
1352 char *usetxt[] = {
1353 #ifdef SDK
1354         "Distributed with SDK " SDK_VERSION_STRING ", built on " __DATE__ " " __TIME__,
1355         "Compile options: SDK Target " TARGET_STRING
1356 #ifdef INDEXLIB
1357         " INDEXLIB"
1358 #endif
1359         "\n",
1360 #endif
1361         "Startup:",
1362 #ifdef SDK
1363         "  --   [Commands]              Non-interactive command line input",
1364 #endif /* SDK */
1365         "  -c                           Command line input",
1366         "  -f   file[LNK]               File input",
1367         "  -p   Prompt and echo of file[LNK] to stdout (default)",
1368         "  -n   No echo of file[LNK] to stdout",
1369 #ifdef SDK
1370         "Usage: [-Options] outfile file [file ...]",
1371 #else /* SDK */
1372         "Usage: [-Options] file [file ...]",
1373 #endif /* SDK */
1374         "Librarys:",
1375         "  -k   Library path specification, one per -k",
1376         "  -l   Library file specification, one per -l",
1377         "Relocation:",
1378         "  -b   area base address = expression",
1379         "  -g   global symbol = expression",
1380 #ifdef GAMEBOY
1381         "  -yo  Number of rom banks (default: 2)",
1382         "  -ya  Number of ram banks (default: 0)",
1383         "  -yt  MBC type (default: no MBC)",
1384         "  -yn  Name of program (default: name of output file)",
1385         "  -yp# Patch one byte in the output GB file (# is: addr=byte)",
1386 #endif /* GAMEBOY */
1387         "Map format:",
1388         "  -m   Map output generated as file[MAP]",
1389 #ifdef SDK
1390         "  -j   no$gmb symbol file generated as file[SYM]",
1391 #endif /* SDK */
1392         "  -x   Hexidecimal (default)",
1393         "  -d   Decimal",
1394         "  -q   Octal",
1395         "Output:",
1396         "  -i   Intel Hex as file[IHX]",
1397         "  -s   Motorola S19 as file[S19]",
1398 #ifdef SDK
1399 #ifdef GAMEGEAR
1400         "  -z   Gamegear image as file[GG]",
1401 #else
1402         "  -z   Gameboy image as file[GB]",
1403 #endif /* GAMEGEAR */
1404 #endif /* SDK */
1405         "List:",
1406         "  -u   Update listing file(s) with link data as file(s)[.RST]",
1407         "End:",
1408         "  -e   or null line terminates input",
1409         "",
1410         0
1411 };
1412
1413 /*)Function     VOID    usage()
1414  *
1415  *      The function usage() outputs to the stderr device the
1416  *      assembler name and version and a list of valid assembler options.
1417  *
1418  *      local variables:
1419  *              char ** dp              pointer to an array of
1420  *                                      text string pointers.
1421  *
1422  *      global variables:
1423  *              FILE *  stderr          c_library
1424  *
1425  *      functions called:
1426  *              int     fprintf()       c_library
1427  *
1428  *      side effects:
1429  *              none
1430  */
1431
1432 VOID
1433 usage()
1434 {
1435         register char   **dp;
1436
1437         fprintf(stderr, "\nASxxxx Linker %s\n\n", VERSION);
1438         for (dp = usetxt; *dp; dp++)
1439                 fprintf(stderr, "%s\n", *dp);
1440         lkexit(1);
1441 }