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   1 /* lkmain.c */
   2
   3 /*
   4  * (C) Copyright 1989-1995
   5  * All Rights Reserved
   6  *
   7  * Alan R. Baldwin
   8  * 721 Berkeley St.
   9  * Kent, Ohio  44240
  10  *
  11  * 31-Oct-97 JLH:
  12  *           - add jflag and jfp to control NoICE output file genration
  13  *  3-Nov-97 JLH:
  14  *           - use a_type == 0 as "virgin area" flag: set == 1 if -b
  15  */
  16
  17 #include <stdlib.h>
  18 #include <stdio.h>
  19 #include <string.h>
  20 #include "aslink.h"
  21
  22 #ifdef WIN32T
  23 #include <time.h>
  24
  25 void Timer(int action, char * message)
  26 {
  27         static double start, end, total=0.0;
  28     static const double secs_per_tick = 1.0 / CLOCKS_PER_SEC;
  29
  30     if(action==0) start=clock()*secs_per_tick;
  31     else if(action==1)
  32     {
  33         end=clock() * secs_per_tick;
  34                 printf("%s \t%f seconds.\n", message, (end-start));
  35                 total+=end-start;
  36     }
  37     else
  38     {
  39                 printf("Total time: \t%f seconds.\n", total);
  40                 total=0.0;
  41     }
  42 }
  43 #endif
  44
  45 /* yuck - but including unistd.h causes problems on Cygwin by redefining
  46  * Addr_T.
  47  */
  48 extern int unlink(const char *);
  49
  50 /*)Module       lkmain.c
  51  *
  52  *      The module lkmain.c contains the functions which
  53  *      (1) input the linker options, parameters, and specifications
  54  *      (2) perform a two pass link
  55  *      (3) produce the appropriate linked data output and/or
  56  *          link map file and/or relocated listing files.
  57  *
  58  *      lkmain.c contains the following functions:
  59  *              FILE *  afile(fn,ft,wf)
  60  *              VOID    bassav()
  61  *              VOID    gblsav()
  62   *             VOID    link_main()
  63  *              VOID    lkexit()
  64  *              VOID    main(argc,argv)
  65  *              VOID    map()
  66  *              int     parse()
  67  *              VOID    setbas()
  68  *              VOID    setgbl()
  69  *              VOID    usage()
  70  *
  71  *      lkmain.c contains the following local variables:
  72  *              char *  usetext[]       array of pointers to the
  73  *                                      command option tect lines
  74  *
  75  */
  76
  77 /*JCF:  Creates some of the default areas so they are allocated in the right order.*/
  78 void Areas51 (void)
  79 {
  80         char * rel[]={
  81                 "XH",
  82                 "H 7 areas 0 global symbols",
  83                 "A _CODE size 0 flags 0",               /*Each .rel has one, so...*/
  84                 "A REG_BANK_0 size 0 flags 4",  /*Register banks are overlayable*/
  85                 "A REG_BANK_1 size 0 flags 4",
  86                 "A REG_BANK_2 size 0 flags 4",
  87                 "A REG_BANK_3 size 0 flags 4",
  88                 "A BSEG size 0 flags 80",               /*BSEG must be just before BITS*/
  89                 "A BSEG_BYTES size 0 flags 0",  /*Size will be obtained from BSEG in lnkarea()*/
  90                 ""
  91         };
  92         int j;
  93
  94         for (j=0; rel[j][0]!=0; j++)
  95         {
  96                 ip=rel[j];
  97                 link_main();
  98         }
  99
 100         /*Set the start address of the default areas:*/
 101         for(ap=areap; ap; ap=ap->a_ap)
 102         {
 103                 /**/ if (!strcmp(ap->a_id, "REG_BANK_0")) { ap->a_addr=0x00; ap->a_type=1; }
 104                 else if (!strcmp(ap->a_id, "REG_BANK_1")) { ap->a_addr=0x08; ap->a_type=1; }
 105                 else if (!strcmp(ap->a_id, "REG_BANK_2")) { ap->a_addr=0x10; ap->a_type=1; }
 106                 else if (!strcmp(ap->a_id, "REG_BANK_3")) { ap->a_addr=0x18; ap->a_type=1; }
 107                 else if (!strcmp(ap->a_id, "BSEG_BYTES")) { ap->a_addr=0x20; ap->a_type=1; }
 108         }
 109 }
 110
 111 /*)Function     VOID    main(argc,argv)
 112  *
 113  *              int     argc            number of command line arguments + 1
 114  *              char *  argv[]          array of pointers to the command line
 115  *                                      arguments
 116  *
 117  *      The function main() evaluates the command line arguments to
 118  *      determine if the linker parameters are to input through 'stdin'
 119  *      or read from a command file.  The functiond getline() and parse()
 120  *      are to input and evaluate the linker parameters.  The linking process
 121  *      proceeds by making the first pass through each .rel file in the order
 122  *      presented to the linker.  At the end of the first pass the setbase(),
 123  *      lnkarea(), setgbl(), and symdef() functions are called to evaluate
 124  *      the base address terms, link all areas, define global variables,
 125  *      and look for undefined symbols.  Following these routines a linker
 126  *      map file may be produced and the linker output files may be opened.
 127  *      The second pass through the .rel files will output the linked data
 128  *      in one of the four supported formats.
 129  *
 130  *      local variables:
 131  *              char *  p               pointer to an argument string
 132  *              int     c               character from argument string
 133  *              int     i               loop counter
 134  *
 135  *      global variables:
 136  *                                              text line in ib[]
 137  *              lfile   *cfp            The pointer *cfp points to the
 138  *                                              current lfile structure
 139  *              char    ctype[]         array of character types, one per
 140  *                                              ASCII character
 141  *              lfile   *filep                  The pointer *filep points to the
 142  *                                              beginning of a linked list of
 143  *                                              lfile structures.
 144  *              head    *hp             Pointer to the current
 145  *                                              head structure
 146  *              char    ib[NINPUT]      .rel file text line
 147  *              char    *ip             pointer into the .rel file
 148  *              lfile   *linkp          pointer to first lfile structure
 149  *                                              containing an input .rel file
 150  *                                              specification
 151  *              int     lkerr           error flag
 152  *              int     mflag           Map output flag
 153  *              int     oflag           Output file type flag
 154  *              FILE    *ofp            Output file handle
 155  *                                              for word formats
 156  *              FILE    *ofph           Output file handle
 157  *                                              for high byte format
 158  *              FILE    *ofpl           Output file handle
 159  *                                              for low byte format
 160  *              int     pass            linker pass number
 161  *              int     pflag           print linker command file flag
 162  *              int     radix           current number conversion radix
 163  *              FILE    *sfp            The file handle sfp points to the
 164  *                                              currently open file
 165  *              lfile   *startp         asmlnk startup file structure
 166  *              FILE *  stdin           c_library
 167  *              FILE *  stdout          c_library
 168  *
 169  *      functions called:
 170  *              FILE *  afile()         lkmain.c
 171  *              int     fclose()        c_library
 172  *              int     fprintf()       c_library
 173  *              int     getline()       lklex.c
 174  *              VOID    library()       lklibr.c
 175  *              VOID    link_main()     lkmain.c
 176  *              VOID    lkexit()        lkmain.c
 177  *              VOID    lnkarea()       lkarea.c
 178  *              VOID    map()           lkmain.c
 179  *              VOID    new()           lksym.c
 180  *              int     parse()         lkmain.c
 181  *              VOID    reloc()         lkreloc.c
 182  *              VOID    search()        lklibr.c
 183  *              VOID    setbas()        lkmain.c
 184  *              VOID    setgbl()        lkmain.c
 185  *              VOID    symdef()        lksym.c
 186  *              VOID    usage()         lkmain.c
 187  *
 188  *      side effects:
 189  *              Completion of main() completes the linking process
 190  *              and may produce a map file (.map) and/or a linked
 191  *              data files (.ihx or .s19) and/or one or more
 192  *              relocated listing files (.rst).
 193  */
 194
 195 int
 196 main(argc, argv)
 197 char *argv[];
 198 {
 199         register char *p;
 200         register int c, i;
 201
 202 #ifdef WIN32T
 203     Timer(0, "");
 204 #endif
 205
 206         startp = (struct lfile *) new (sizeof (struct lfile));
 207
 208         pflag = 1;
 209         for (i=1; i<argc; ++i) {
 210                 p = argv[i];
 211                 if (*p == '-') {
 212                         while (ctype[c = *(++p)] & LETTER) {
 213                                 switch(c) {
 214
 215                                 case 'c':
 216                                 case 'C':
 217                                         startp->f_type = F_STD;
 218                                         break;
 219
 220                                 case 'f':
 221                                 case 'F':
 222                                         startp->f_type = F_LNK;
 223                                         break;
 224
 225                                 case 'n':
 226                                 case 'N':
 227                                         pflag = 0;
 228                                         break;
 229
 230                                 case 'p':
 231                                 case 'P':
 232                                         pflag = 1;
 233                                         break;
 234
 235                                 default:
 236                                         usage();
 237                                 }
 238                         }
 239                 } else {
 240                         if (startp->f_type == F_LNK) {
 241                                 startp->f_idp = p;
 242                         }
 243                 }
 244         }
 245        if (startp->f_type == 0)
 246                 usage();
 247         if (startp->f_type == F_LNK && startp->f_idp == NULL)
 248                 usage();
 249
 250         cfp = NULL;
 251         sfp = NULL;
 252         filep = startp;
 253         while (1) {
 254                 ip = ib;
 255                 if (getline() == 0)
 256                         break;
 257                 if (pflag && sfp != stdin)
 258                         fprintf(stdout, "%s\n", ip);
 259                if (*ip == '\0' || parse())
 260                         break;
 261         }
 262
 263         if (sfp) {
 264             fclose(sfp);
 265             sfp = NULL;
 266         }
 267
 268         if (linkp == NULL)
 269                 usage();
 270
 271         syminit();
 272
 273         if (dflag){
 274             //dfp = afile("temp", "cdb", 1);
 275                 SaveLinkedFilePath(linkp->f_idp); //Must be the first one...
 276                 dfp = afile(linkp->f_idp,"cdb",1); //JCF: Nov 30, 2002
 277             if (dfp == NULL)
 278                 lkexit(1);
 279         }
 280
 281         for (pass=0; pass<2; ++pass) {
 282                 cfp = NULL;
 283                 sfp = NULL;
 284                 filep = linkp;
 285                 hp = NULL;
 286                 radix = 10;
 287
 288                 Areas51(); /*JCF: Create the default 8051 areas in the right order*/
 289
 290                 while (getline()) {
 291                         ip = ib;
 292
 293                         /* pass any "magic comments" to NoICE output */
 294                         if ((ip[0] == ';') && (ip[1] == '!') && jfp) {
 295                                 fprintf( jfp, "%s\n", &ip[2] );
 296                         }
 297                         link_main();
 298                 }
 299                 if (pass == 0) {
 300                         /*
 301                          * Search libraries for global symbols
 302                          */
 303                         search();
 304                         /*
 305                          * Set area base addresses.
 306                          */
 307                         setbas();
 308                         /*
 309                          * Link all area addresses.
 310                          */
 311                         lnkarea();
 312                         /*
 313                          * Process global definitions.
 314                          */
 315                         setgbl();
 316                         /*
 317                          * Check for undefined globals.
 318                          */
 319                         symdef(stderr);
 320
 321                         /* Open NoICE output file if requested */
 322                         if (jflag) {
 323                                 jfp = afile(linkp->f_idp, "NOI", 1);
 324                                 if (jfp == NULL) {
 325                                         lkexit(1);
 326                                 }
 327                         }
 328
 329                         /*
 330                          * Output Link Map if requested,
 331                          * or if NoICE output requested (since NoICE
 332                          * file is generated in part by map() processing)
 333                          */
 334                         if (mflag || jflag)
 335                                 map();
 336
 337                         if (sflag) /*JCF: memory usage summary output*/
 338                                 if(summary(areap))lkexit(1);
 339
 340                         if (iram_size)
 341                                 iramcheck();
 342
 343                         /*
 344                          * Open output file
 345                          */
 346                         if (oflag == 1) {
 347                                 ofp = afile(linkp->f_idp, "ihx", 1);
 348                                 if (ofp == NULL) {
 349                                         lkexit(1);
 350                                 }
 351                                 /* include NoICE command to load hex file */
 352                                 if (jfp) fprintf( jfp, "LOAD %s.IHX\n", linkp->f_idp );
 353
 354                         } else
 355                         if (oflag == 2) {
 356                                 ofp = afile(linkp->f_idp, "S19", 1);
 357                                 if (ofp == NULL) {
 358                                         lkexit(1);
 359                                 }
 360                                 /* include NoICE command to load hex file */
 361                                 if (jfp) fprintf( jfp, "LOAD %s.S19\n", linkp->f_idp );
 362                         }
 363                 } else {
 364                         /*
 365                          * Link in library files
 366                          */
 367                         library();
 368                         reloc('E');
 369                 }
 370         }
 371         //JCF:
 372         CreateAOMF51();
 373
 374 #ifdef WIN32T
 375     Timer(1, "Linker execution time");
 376 #endif
 377
 378         lkexit(lkerr);
 379         return 0;
 380 }
 381
 382 /*)Function     VOID    lkexit(i)
 383  *
 384  *                      int     i       exit code
 385  *
 386  *      The function lkexit() explicitly closes all open
 387  *      files and then terminates the program.
 388  *
 389  *      local variables:
 390  *              none
 391  *
 392  *      global variables:
 393  *              FILE *  mfp             file handle for .map
 394  *              FILE *  ofp             file handle for .ihx/.s19
 395  *              FILE *  rfp             file hanlde for .rst
 396  *              FILE *  sfp             file handle for .rel
 397  *              FILE *  tfp             file handle for .lst
 398  *
 399  *      functions called:
 400  *              int     fclose()        c_library
 401  *              VOID    exit()          c_library
 402  *
 403  *      side effects:
 404  *              All files closed. Program terminates.
 405  */
 406
 407 VOID
 408 lkexit(i)
 409 int i;
 410 {
 411         if (mfp != NULL) fclose(mfp);
 412         if (jfp != NULL) fclose(jfp);
 413         if (ofp != NULL) fclose(ofp);
 414         if (rfp != NULL) fclose(rfp);
 415         if (sfp != NULL) fclose(sfp);
 416         if (tfp != NULL) fclose(tfp);
 417         if (dfp != NULL) fclose(dfp);
 418         /*if (dfp != NULL)
 419             FILE *xfp = afile(linkp->f_idp,"cdb",1);
 420             dfp = freopen("temp.cdb","r",dfp);
 421             copyfile(xfp,dfp);
 422             fclose(xfp);
 423             fclose(dfp);
 424             unlink("temp.cdb");
 425         }*/
 426         exit(i);
 427 }
 428
 429 /*)Function     link_main()
 430  *
 431  *      The function link_main() evaluates the directives for each line of
 432  *      text read from the .rel file(s).  The valid directives processed
 433  *      are:
 434  *              X, D, Q, H, M, A, S, T, R, and P.
 435  *
 436  *      local variables:
 437  *              int     c               first non blank character of a line
 438  *
 439  *      global variables:
 440  *              head    *headp          The pointer to the first
 441  *                                              head structure of a linked list
 442  *              head    *hp             Pointer to the current
 443  *                                              head structure
 444  *              int     pass            linker pass number
 445  *              int     radix           current number conversion radix
 446  *
 447  *      functions called:
 448  *              char    endline()       lklex.c
 449  *              VOID    module()        lkhead.c
 450  *              VOID    newarea()       lkarea.c
 451  *              VOID    newhead()       lkhead.c
 452  *              sym *   newsym()        lksym.c
 453  *              VOID    reloc()         lkreloc.c
 454  *
 455  *      side effects:
 456  *              Head, area, and symbol structures are created and
 457  *              the radix is set as the .rel file(s) are read.
 458  */
 459
 460 VOID
 461 link_main()
 462 {
 463         register int c;
 464
 465         if ((c=endline()) == 0) { return; }
 466         switch (c) {
 467
 468         case 'X':
 469                 radix = 16;
 470                 break;
 471
 472         case 'D':
 473                 radix = 10;
 474                 break;
 475
 476         case 'Q':
 477                 radix = 8;
 478                 break;
 479
 480         case 'H':
 481                 if (pass == 0) {
 482                         newhead();
 483                 } else {
 484                         if (hp == 0) {
 485                                 hp = headp;
 486                         } else {
 487                                 hp = hp->h_hp;
 488                         }
 489                 }
 490                 sdp.s_area = NULL;
 491                 sdp.s_areax = NULL;
 492                 sdp.s_addr = 0;
 493                 break;
 494
 495         case 'M':
 496                 if (pass == 0)
 497                         module();
 498                 break;
 499
 500         case 'A':
 501                 if (pass == 0)
 502                         newarea();
 503                 if (sdp.s_area == NULL) {
 504                         sdp.s_area = areap;
 505                         sdp.s_areax = areap->a_axp;
 506                         sdp.s_addr = 0;
 507                 }
 508                 break;
 509
 510         case 'S':
 511                 if (pass == 0)
 512                         newsym();
 513                 break;
 514
 515         case 'T':
 516         case 'R':
 517         case 'P':
 518                 if (pass == 0)
 519                         break;
 520                 reloc(c);
 521                 break;
 522
 523         default:
 524                 break;
 525         }
 526         if (c == 'X' || c == 'D' || c == 'Q') {
 527                 if ((c = get()) == 'H') {
 528                         hilo = 1;
 529                 } else
 530                 if (c == 'L') {
 531                         hilo = 0;
 532                 }
 533         }
 534 }
 535
 536
 537 /*)Function     VOID    map()
 538  *
 539  *      The function map() opens the output map file and calls the various
 540  *      routines to
 541  *      (1) output the variables in each area,
 542  *      (2) list the files processed with module names,
 543  *      (3) list the libraries file processed,
 544  *      (4) list base address definitions,
 545  *      (5) list global variable definitions, and
 546  *      (6) list any undefined variables.
 547  *
 548  *      local variables:
 549  *              int             i               counter
 550  *              head *  hdp             pointer to head structure
 551  *              lbfile *lbfh            pointer to library file structure
 552  *
 553  *      global variables:
 554  *              area    *ap             Pointer to the current
 555  *                                              area structure
 556  *              area    *areap          The pointer to the first
 557  *                                              area structure of a linked list
 558  *              base    *basep          The pointer to the first
 559  *                                              base structure
 560  *              base    *bsp            Pointer to the current
 561  *                                              base structure
 562  *              lfile   *filep                  The pointer *filep points to the
 563  *                                              beginning of a linked list of
 564  *                                              lfile structures.
 565  *              globl   *globlp         The pointer to the first
 566  *                                              globl structure
 567  *              globl   *gsp            Pointer to the current
 568  *                                              globl structure
 569  *              head    *headp          The pointer to the first
 570  *                                              head structure of a linked list
 571  *              lbfile  *lbfhead        The pointer to the first
 572  *                                      lbfile structure of a linked list
 573  *              lfile   *linkp          pointer to first lfile structure
 574  *                                              containing an input REL file
 575  *                                              specification
 576  *              int     lop             current line number on page
 577  *              FILE    *mfp            Map output file handle
 578  *              int     page            current page number
 579  *
 580  *      functions called:
 581  *              FILE *  afile()         lkmain.c
 582  *              int     fprintf()       c_library
 583  *              VOID    lkexit()        lkmain.c
 584  *              VOID    lstarea()       lklist.c
 585  *              VOID    newpag()        lklist.c
 586  *              VOID    symdef()        lksym.c
 587  *
 588  *      side effects:
 589  *              The map file is created.
 590  */
 591
 592 VOID
 593 map()
 594 {
 595         register int i;
 596         register struct head *hdp;
 597         register struct lbfile *lbfh;
 598
 599         /*
 600          * Open Map File
 601          */
 602         mfp = afile(linkp->f_idp, "map", 1);
 603         if (mfp == NULL) {
 604                 lkexit(1);
 605         }
 606
 607         /*
 608          * Output Map Area Lists
 609          */
 610         page = 0;
 611         lop  = NLPP;
 612         ap = areap;
 613         while (ap) {
 614                 lstarea(ap);
 615                 ap = ap->a_ap;
 616         }
 617         /*
 618          * List Linked Files
 619          */
 620         newpag(mfp);
 621         fprintf(mfp, "\nFiles Linked      [ module(s) ]\n\n");
 622         hdp = headp;
 623         filep = linkp;
 624         while (filep) {
 625                 fprintf(mfp, "%-16s", filep->f_idp);
 626                 i = 0;
 627                 while ((hdp != NULL) && (hdp->h_lfile == filep)) {
 628                         if (i % 5) {
 629                             fprintf(mfp, ", %8.8s", hdp->m_id);
 630                         } else {
 631                             if (i) {
 632                                 fprintf(mfp, ",\n%20s%8.8s", "", hdp->m_id);
 633                             } else {
 634                                 fprintf(mfp, "  [ %8.8s", hdp->m_id);
 635                             }
 636                         }
 637                         hdp = hdp->h_hp;
 638                         i++;
 639                 }
 640                 if (i)
 641                         fprintf(mfp, " ]");
 642                 fprintf(mfp, "\n");
 643                 filep = filep->f_flp;
 644         }
 645         /*
 646          * List Linked Libraries
 647          */
 648         if (lbfhead != NULL) {
 649                 fprintf(mfp,
 650         "\nLibraries Linked                    [   object  file   ]\n\n");
 651                 for (lbfh=lbfhead; lbfh; lbfh=lbfh->next) {
 652                         fprintf(mfp, "%-32s    [ %16.16s ]\n",
 653                                 lbfh->libspc, lbfh->relfil);
 654                 }
 655                 fprintf(mfp, "\n");
 656         }
 657         /*
 658          * List Base Address Definitions
 659          */
 660         if (basep) {
 661                 newpag(mfp);
 662                 fprintf(mfp, "\nUser Base Address Definitions\n\n");
 663                 bsp = basep;
 664                 while (bsp) {
 665                         fprintf(mfp, "%s\n", bsp->b_strp);
 666                         bsp = bsp->b_base;
 667                 }
 668         }
 669         /*
 670          * List Global Definitions
 671          */
 672         if (globlp) {
 673                 newpag(mfp);
 674                 fprintf(mfp, "\nUser Global Definitions\n\n");
 675                 gsp = globlp;
 676                 while (gsp) {
 677                         fprintf(mfp, "%s\n", gsp->g_strp);
 678                         gsp = gsp->g_globl;
 679                 }
 680         }
 681         fprintf(mfp, "\n\f");
 682         symdef(mfp);
 683 }
 684
 685 /*)Function     int     parse()
 686  *
 687  *      The function parse() evaluates all command line or file input
 688  *      linker directives and updates the appropriate variables.
 689  *
 690  *      local variables:
 691  *              int     c               character value
 692  *              char    fid[]           file id string
 693  *
 694  *      global variables:
 695  *              char    ctype[]         array of character types, one per
 696  *                                              ASCII character
 697  *              lfile   *lfp            pointer to current lfile structure
 698  *                                              being processed by parse()
 699  *              lfile   *linkp          pointer to first lfile structure
 700  *                                              containing an input REL file
 701  *                                              specification
 702  *              int     mflag           Map output flag
 703  *              int     oflag           Output file type flag
 704  *              int     pflag           print linker command file flag
 705  *              FILE *  stderr          c_library
 706  *              int     uflag           Relocated listing flag
 707  *              int     xflag           Map file radix type flag
 708  *
 709  *      Functions called:
 710  *              VOID    addlib()        lklibr.c
 711  *              VOID    addpath()       lklibr.c
 712  *              VOID    bassav()        lkmain.c
 713  *              int     fprintf()       c_library
 714  *              VOID    gblsav()        lkmain.c
 715  *              VOID    getfid()        lklex.c
 716  *              char    getnb()         lklex.c
 717  *              VOID    lkexit()        lkmain.c
 718  *              char *  strcpy()        c_library
 719  *              int     strlen()        c_library
 720  *
 721  *      side effects:
 722  *              Various linker flags are updated and the linked
 723  *              structure lfile is created.
 724  */
 725
 726 int
 727 parse()
 728 {
 729         register int c;
 730         char fid[NINPUT];
 731
 732         while ((c = getnb()) != 0) {
 733                 if ( c == '-') {
 734                         while (ctype[c=get()] & LETTER) {
 735                                 switch(c) {
 736
 737                                 case 'i':
 738                                 case 'I':
 739                                         oflag = 1;
 740                                         break;
 741
 742                                 case 's':
 743                                 case 'S':
 744                                         oflag = 2;
 745                                         break;
 746
 747                                 case 'm':
 748                                 case 'M':
 749                                         ++mflag;
 750                                         break;
 751
 752                                 case 'y': /*JCF: memory usage summary output*/
 753                                 case 'Y':
 754                                         ++sflag;
 755                                         break;
 756
 757                                 case 'j':
 758                                 case 'J':
 759                                         jflag = 1;
 760                                         break;
 761
 762                                 case 'u':
 763                                 case 'U':
 764                                         uflag = 1;
 765                                         break;
 766                                 case 'r':
 767                                 case 'R':
 768                                         rflag = 1;
 769                                         break;
 770                                 case 'x':
 771                                 case 'X':
 772                                         xflag = 0;
 773                                         break;
 774
 775                                 case 'q':
 776                                 case 'Q':
 777                                         xflag = 1;
 778                                         break;
 779
 780                                 case 'd':
 781                                 case 'D':
 782                                         xflag = 2;
 783                                         break;
 784
 785                                 case 'e':
 786                                 case 'E':
 787                                         return(1);
 788
 789                                 case 'n':
 790                                 case 'N':
 791                                         pflag = 0;
 792                                         break;
 793
 794                                 case 'p':
 795                                 case 'P':
 796                                         pflag = 1;
 797                                         break;
 798
 799                                 case 'b':
 800                                 case 'B':
 801                                         bassav();
 802                                         return(0);
 803
 804                                 case 'g':
 805                                 case 'G':
 806                                         gblsav();
 807                                         return(0);
 808
 809                                 case 'k':
 810                                 case 'K':
 811                                         addpath();
 812                                         return(0);
 813
 814                                 case 'l':
 815                                 case 'L':
 816                                         addlib();
 817                                         return(0);
 818
 819                                 case 'a':
 820                                 case 'A':
 821                                         iramsav();
 822                                         return(0);
 823
 824                                 case 'v':
 825                                 case 'V':
 826                                         xramsav();
 827                                         return(0);
 828
 829                                 case 'w':
 830                                 case 'W':
 831                                         codesav();
 832                                         return(0);
 833
 834                                 case 'z':
 835                                 case 'Z':
 836                                         dflag = 1;
 837                                         return(0);
 838                                 default:
 839                                         fprintf(stderr, "Invalid option\n");
 840                                         lkexit(1);
 841                                 }
 842                         }
 843                 } else
 844                if (ctype[c] & ILL) {
 845                        fprintf(stderr, "Invalid input");
 846                        lkexit(1);
 847                } else {
 848                         if (linkp == NULL) {
 849                                 linkp = (struct lfile *)
 850                                         new (sizeof (struct lfile));
 851                                 lfp = linkp;
 852                         } else {
 853                                 lfp->f_flp = (struct lfile *)
 854                                                 new (sizeof (struct lfile));
 855                                 lfp = lfp->f_flp;
 856                         }
 857                         getfid(fid, c);
 858                         lfp->f_idp = (char *) new (strlen(fid)+1);
 859                         strcpy(lfp->f_idp, fid);
 860                         lfp->f_type = F_REL;
 861                 }
 862         }
 863         return(0);
 864 }
 865
 866 /*)Function     VOID    bassav()
 867  *
 868  *      The function bassav() creates a linked structure containing
 869  *      the base address strings input to the linker.
 870  *
 871  *      local variables:
 872  *              none
 873  *
 874  *      global variables:
 875  *              base    *basep          The pointer to the first
 876  *                                              base structure
 877  *              base    *bsp            Pointer to the current
 878  *                                              base structure
 879  *              char    *ip             pointer into the REL file
 880  *                                              text line in ib[]
 881  *
 882  *       functions called:
 883  *              char    getnb()         lklex.c
 884  *              VOID *  new()           lksym.c
 885  *              int     strlen()        c_library
 886  *              char *  strcpy()        c_library
 887  *              VOID    unget()         lklex.c
 888  *
 889  *      side effects:
 890  *              The basep structure is created.
 891  */
 892
 893 VOID
 894 bassav()
 895 {
 896         if (basep == NULL) {
 897                 basep = (struct base *)
 898                         new (sizeof (struct base));
 899                 bsp = basep;
 900         } else {
 901                 bsp->b_base = (struct base *)
 902                                 new (sizeof (struct base));
 903                 bsp = bsp->b_base;
 904         }
 905         unget(getnb());
 906         bsp->b_strp = (char *) new (strlen(ip)+1);
 907         strcpy(bsp->b_strp, ip);
 908 }
 909
 910 /*)Function     VOID    setbas()
 911  *
 912  *      The function setbas() scans the base address lines in hte
 913  *      basep structure, evaluates the arguments, and sets beginning
 914  *      address of the specified areas.
 915  *
 916  *      local variables:
 917  *              int     v               expression value
 918  *              char    id[]            base id string
 919  *
 920  *      global variables:
 921  *              area    *ap             Pointer to the current
 922  *                                              area structure
 923  *              area    *areap          The pointer to the first
 924  *                                              area structure of a linked list
 925  *              base    *basep          The pointer to the first
 926  *                                              base structure
 927  *              base    *bsp            Pointer to the current
 928  *                                              base structure
 929  *              char    *ip             pointer into the REL file
 930  *                                              text line in ib[]
 931  *              int     lkerr           error flag
 932  *
 933  *       functions called:
 934  *              Addr_T  expr()          lkeval.c
 935  *              int     fprintf()       c_library
 936  *              VOID    getid()         lklex.c
 937  *              char    getnb()         lklex.c
 938  *              int     symeq()         lksym.c
 939  *
 940  *      side effects:
 941  *              The base address of an area is set.
 942  */
 943
 944 VOID
 945 setbas()
 946 {
 947         register int v;
 948         char id[NCPS];
 949
 950         bsp = basep;
 951         while (bsp) {
 952                 ip = bsp->b_strp;
 953                 getid(id, -1);
 954                 if (getnb() == '=') {
 955                         v = expr(0);
 956                         for (ap = areap; ap != NULL; ap = ap->a_ap) {
 957                                 if (symeq(id, ap->a_id))
 958                                         break;
 959                         }
 960                         if (ap == NULL) {
 961                                 fprintf(stderr,
 962                                 "ASlink-Warning-No definition of area %s\n", id);
 963                                 lkerr++;
 964                         } else {
 965                                 ap->a_addr = v;
 966                                 ap->a_type = 1; /* JLH: value set */
 967                         }
 968                 } else {
 969                         fprintf(stderr, "ASlink-Warning-No '=' in base expression");
 970                         lkerr++;
 971                 }
 972                 bsp = bsp->b_base;
 973         }
 974 }
 975
 976 /*)Function     VOID    gblsav()
 977  *
 978  *      The function gblsav() creates a linked structure containing
 979  *      the global variable strings input to the linker.
 980  *
 981  *      local variable:
 982  *              none
 983  *
 984  *      global variables:
 985  *              globl   *globlp         The pointer to the first
 986  *                                              globl structure
 987  *              globl   *gsp            Pointer to the current
 988  *                                              globl structure
 989  *              char    *ip             pointer into the REL file
 990  *                                              text line in ib[]
 991  *              int     lkerr           error flag
 992  *
 993  *      functions called:
 994  *              char    getnb()         lklex.c
 995  *              VOID *  new()           lksym.c
 996  *              int     strlen()        c_library
 997  *              char *  strcpy()        c_library
 998  *              VOID    unget()         lklex.c
 999  *
1000  *      side effects:
1001  *              The globlp structure is created.
1002  */
1003
1004 VOID
1005 gblsav()
1006 {
1007         if (globlp == NULL) {
1008                 globlp = (struct globl *)
1009                         new (sizeof (struct globl));
1010                 gsp = globlp;
1011         } else {
1012                 gsp->g_globl = (struct globl *)
1013                                 new (sizeof (struct globl));
1014                 gsp = gsp->g_globl;
1015         }
1016         unget(getnb());
1017         gsp->g_strp = (char *) new (strlen(ip)+1);
1018         strcpy(gsp->g_strp, ip);
1019 }
1020
1021 /*)Function     VOID    setgbl()
1022  *
1023  *      The function setgbl() scans the global variable lines in hte
1024  *      globlp structure, evaluates the arguments, and sets a variable
1025  *      to this value.
1026  *
1027  *      local variables:
1028  *              int     v               expression value
1029  *              char    id[]            base id string
1030  *              sym *   sp              pointer to a symbol structure
1031  *
1032  *      global variables:
1033  *              char    *ip             pointer into the REL file
1034  *                                              text line in ib[]
1035  *              globl   *globlp         The pointer to the first
1036  *                                              globl structure
1037  *              globl   *gsp            Pointer to the current
1038  *                                              globl structure
1039  *              FILE *  stderr          c_library
1040  *              int     lkerr           error flag
1041  *
1042  *       functions called:
1043  *              Addr_T  expr()          lkeval.c
1044  *              int     fprintf()       c_library
1045  *              VOID    getid()         lklex.c
1046  *              char    getnb()         lklex.c
1047  *              sym *   lkpsym()        lksym.c
1048  *
1049  *      side effects:
1050  *              The value of a variable is set.
1051  */
1052
1053 VOID
1054 setgbl()
1055 {
1056         register int v;
1057         register struct sym *sp;
1058         char id[NCPS];
1059
1060         gsp = globlp;
1061         while (gsp) {
1062                 ip = gsp->g_strp;
1063                 getid(id, -1);
1064                 if (getnb() == '=') {
1065                         v = expr(0);
1066                         sp = lkpsym(id, 0);
1067                         if (sp == NULL) {
1068                                 fprintf(stderr,
1069                                 "No definition of symbol %s\n", id);
1070                                 lkerr++;
1071                         } else {
1072                                 if (sp->s_flag & S_DEF) {
1073                                         fprintf(stderr,
1074                                         "Redefinition of symbol %s\n", id);
1075                                         lkerr++;
1076                                         sp->s_axp = NULL;
1077                                 }
1078                                 sp->s_addr = v;
1079                                 sp->s_type |= S_DEF;
1080                         }
1081                 } else {
1082                         fprintf(stderr, "No '=' in global expression");
1083                         lkerr++;
1084                 }
1085                 gsp = gsp->g_globl;
1086         }
1087 }
1088
1089 /*)Function     FILE *  afile(fn,, ft, wf)
1090  *
1091  *              char *  fn              file specification string
1092  *              char *  ft              file type string
1093  *              int     wf              read(0)/write(1) flag
1094  *
1095  *      The function afile() opens a file for reading or writing.
1096  *              (1)     If the file type specification string ft
1097  *                      is not NULL then a file specification is
1098  *                      constructed with the file path\name in fn
1099  *                      and the extension in ft.
1100  *              (2)     If the file type specification string ft
1101  *                      is NULL then the file specification is
1102  *                      constructed from fn.  If fn does not have
1103  *                      a file type then the default .rel file
1104  *                      type is appended to the file specification.
1105  *
1106  *      afile() returns a file handle for the opened file or aborts
1107  *      the assembler on an open error.
1108  *
1109  *      local variables:
1110  *              char    fb[]            constructed file specification string
1111  *              FILE *  fp              filehandle for opened file
1112  *
1113  *      global variables:
1114  *              int     lkerr           error flag
1115  *
1116  *      functions called:
1117  *              FILE *  fopen()         c_library
1118  *              int     fprintf()       c_library
1119  *
1120  *      side effects:
1121  *              File is opened for read or write.
1122  */
1123
1124 FILE *
1125 afile(fn, ft, wf)
1126 char *fn;
1127 char *ft;
1128 {
1129         FILE *fp;
1130         char fb[PATH_MAX];
1131         char *omode = (wf ? (wf == 2 ? "a" : "w") : "r");
1132         int i;
1133
1134         /*Look backward the name path and get rid of the extension, if any*/
1135         i=strlen(fn);
1136         for(; (fn[i]!='.')&&(fn[i]!='\\')&&(fn[i]!='/')&&(i>=0); i--);
1137         if( (fn[i]=='.') && strcmp(ft, "lnk") )
1138         {
1139                 strncpy(fb, fn, i);
1140                 fb[i]=0;
1141         }
1142         else
1143         {
1144                 strcpy(fb, fn);
1145         }
1146
1147         /*Add the extension*/
1148         strcat(fb, ".");
1149         strcat(fb, strlen(ft)?ft:"rel");
1150
1151         fp = fopen(fb, omode);
1152         if (fp==NULL)
1153         {
1154             if (strcmp(ft,"adb"))/*Do not complaint for optional adb files*/
1155                 {
1156                         fprintf(stderr, "%s: cannot %s.\n", fb, wf?"create":"open");
1157                         lkerr++;
1158             }
1159         }
1160         return (fp);
1161 }
1162
1163 /*)Function     VOID    iramsav()
1164  *
1165  *      The function iramsav() stores the size of the chip's internal RAM.
1166  *      This is used after linking to check that variable assignment to this
1167  *      dataspace didn't overflow into adjoining segments.  Variables in the
1168  *      DSEG, OSEG, and ISEG are assigned to this dataspace.
1169  *
1170  *      local variables:
1171  *              none
1172  *
1173  *      global variables:
1174  *              char    *ip             pointer into the REL file
1175  *                                              text line in ib[]
1176  *              unsigned int            size of chip's internal
1177  *                      iram_size               RAM segment
1178  *
1179  *       functions called:
1180  *              char    getnb()         lklex.c
1181  *              VOID    unget()         lklex.c
1182  *              Addr_T  expr()          lkeval.c
1183  *
1184  *      side effects:
1185  *              The iram_size may be modified.
1186  */
1187
1188 VOID
1189 iramsav()
1190 {
1191   unget(getnb());
1192   if (ip && *ip)
1193     //iram_size = atoi(ip);
1194     iram_size = expr(0);        /* evaluate size expression */
1195   else
1196     iram_size = 128;            /* Default is 128 (0x80) bytes */
1197 }
1198
1199 /*Similar to iramsav but for xram memory*/
1200 VOID
1201 xramsav()
1202 {
1203   unget(getnb());
1204   if (ip && *ip)
1205     xram_size = expr(0);        /* evaluate size expression */
1206   else
1207         xram_size = rflag?0x1000000:0x10000;
1208 }
1209
1210 /*Similar to iramsav but for code memory*/
1211 VOID
1212 codesav()
1213 {
1214   unget(getnb());
1215   if (ip && *ip)
1216     code_size = expr(0);        /* evaluate size expression */
1217   else
1218         code_size = rflag?0x1000000:0x10000;
1219 }
1220
1221
1222 /*)Function     VOID    iramcheck()
1223  *
1224  *      The function iramcheck() is used at the end of linking to check that
1225  *      the internal RAM area wasn't overflowed by too many variable
1226  *      assignments.  Variables in the DSEG, ISEG, and OSEG are assigned to
1227  *      the chip's internal RAM.
1228  *
1229  *      local variables:
1230  *              none
1231  *
1232  *      global variables:
1233  *              unsigned int            size of chip's internal
1234  *                      iram_size               RAM segment
1235  *              struct area             linked list of memory
1236  *                      *areap                  areas
1237  *
1238  *       functions called:
1239  *
1240  *      side effects:
1241  */
1242
1243 VOID
1244 iramcheck()
1245 {
1246   register unsigned int last_addr;
1247   register struct area *ap;
1248
1249   for (ap = areap; ap; ap=ap->a_ap) {
1250     if ((ap->a_size != 0) &&
1251         (!strcmp(ap->a_id, "DSEG") ||
1252          !strcmp(ap->a_id, "OSEG") ||
1253          !strcmp(ap->a_id, "ISEG")
1254         )
1255        )
1256     {
1257       last_addr = ap->a_addr + ap->a_size - 1;
1258       if (last_addr >= iram_size)
1259         fprintf(stderr,
1260                 "\nWARNING! Segment %s extends past the end\n"
1261                 "         of internal RAM.  Check map file.\n",
1262                 ap->a_id);
1263     }
1264   }
1265 }
1266
1267 char *usetxt[] = {
1268         "Startup:",
1269         "  -c   Command line input",
1270         "  -f   file[LNK] File input",
1271         "  -p   Prompt and echo of file[LNK] to stdout (default)",
1272         "  -n   No echo of file[LNK] to stdout",
1273 /*      "Usage: [-Options] file [file ...]", */
1274         "Libraries:",
1275         "  -k   Library path specification, one per -k",
1276         "  -l   Library file specification, one per -l",
1277         "Relocation:",
1278         "  -b   area base address = expression",
1279         "  -g   global symbol = expression",
1280         "Map format:",
1281         "  -m   Map output generated as file[MAP]",
1282         "  -x   Hexadecimal (default),  -d  Decimal,  -q  Octal",
1283         "Output:",
1284         "  -i   Intel Hex as file[IHX]",
1285         "  -s   Motorola S19 as file[S19]",
1286         "  -j   Produce NoICE debug as file[NOI]",
1287         "  -z   Produce SDCdb debug as file[cdb]",
1288 /*      "List:", */
1289         "  -u   Update listing file(s) with link data as file(s)[.RST]",
1290         "Miscellaneous:\n"
1291         "  -a   [iram-size] Check for internal RAM overflow",
1292         "  -v   [xram-size] Check for external RAM overflow",
1293         "  -w   [code-size] Check for code overflow",
1294         "End:",
1295         "  -e   or null line terminates input",
1296         0
1297 };
1298
1299 /*)Function     VOID    usage()
1300  *
1301  *      The function usage() outputs to the stderr device the
1302  *      assembler name and version and a list of valid assembler options.
1303  *
1304  *      local variables:
1305  *              char ** dp              pointer to an array of
1306  *                                      text string pointers.
1307  *
1308  *      global variables:
1309  *              FILE *  stderr          c_library
1310  *
1311  *      functions called:
1312  *              int     fprintf()       c_library
1313  *
1314  *      side effects:
1315  *              none
1316  */
1317
1318 VOID
1319 usage()
1320 {
1321         register char   **dp;
1322
1323         fprintf(stderr, "\nASxxxx Linker %s\n\n", VERSION);
1324         for (dp = usetxt; *dp; dp++)
1325                 fprintf(stderr, "%s\n", *dp);
1326         lkexit(1);
1327 }
1328
1329 /*)Function     VOID    copyfile()
1330  *
1331  *              FILE    *dest           destination file
1332  *              FILE    *src            source file
1333  *
1334  *      function will copy source file to destination file
1335  *
1336  *
1337  *      functions called:
1338  *              int     fgetc()         c_library
1339  *              int     fputc()         c_library
1340  *
1341  *      side effects:
1342  *              none
1343  */
1344 VOID copyfile (dest,src)
1345 FILE *src,*dest ;
1346 {
1347     int ch;
1348     while ((ch = fgetc(src)) != EOF) {
1349
1350         fputc(ch,dest);
1351     }
1352 }