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