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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 /* yuck - but including unistd.h causes problems on Cygwin by redefining
  23  * Addr_T.
  24  */
  25 extern int unlink(const char *);
  26
  27 /*)Module       lkmain.c
  28  *
  29  *      The module lkmain.c contains the functions which
  30  *      (1) input the linker options, parameters, and specifications
  31  *      (2) perform a two pass link
  32  *      (3) produce the appropriate linked data output and/or
  33  *          link map file and/or relocated listing files.
  34  *
  35  *      lkmain.c contains the following functions:
  36  *              FILE *  afile(fn,ft,wf)
  37  *              VOID    bassav()
  38  *              VOID    gblsav()
  39   *             VOID    link_main()
  40  *              VOID    lkexit()
  41  *              VOID    main(argc,argv)
  42  *              VOID    map()
  43  *              int     parse()
  44  *              VOID    setbas()
  45  *              VOID    setgbl()
  46  *              VOID    usage()
  47  *
  48  *      lkmain.c contains the following local variables:
  49  *              char *  usetext[]       array of pointers to the
  50  *                                      command option tect lines
  51  *
  52  */
  53
  54 /*JCF:  Creates some of the default areas so they are allocated in the right order.*/
  55 void Areas51 (void)
  56 {
  57         char * rel[]={
  58                 "XH",
  59                 "H 7 areas 0 global symbols",
  60                 "A _CODE size 0 flags 0",               /*Each .rel has one, so...*/
  61                 "A REG_BANK_0 size 0 flags 4",  /*Register banks are overlayable*/
  62                 "A REG_BANK_1 size 0 flags 4",
  63                 "A REG_BANK_2 size 0 flags 4",
  64                 "A REG_BANK_3 size 0 flags 4",
  65                 "A BSEG size 0 flags 80",               /*BSEG must be just before BITS*/
  66                 "A BSEG_BYTES size 0 flags 0",  /*Size will be obtained from BSEG in lnkarea()*/
  67                 ""
  68         };
  69         int j;
  70
  71         for (j=0; rel[j][0]!=0; j++)
  72         {
  73                 ip=rel[j];
  74                 link_main();
  75         }
  76
  77         /*Set the start address of the default areas:*/
  78         for(ap=areap; ap; ap=ap->a_ap)
  79         {
  80                 /**/ if (!strcmp(ap->a_id, "REG_BANK_0")) { ap->a_addr=0x00; ap->a_type=1; }
  81                 else if (!strcmp(ap->a_id, "REG_BANK_1")) { ap->a_addr=0x08; ap->a_type=1; }
  82                 else if (!strcmp(ap->a_id, "REG_BANK_2")) { ap->a_addr=0x10; ap->a_type=1; }
  83                 else if (!strcmp(ap->a_id, "REG_BANK_3")) { ap->a_addr=0x18; ap->a_type=1; }
  84                 else if (!strcmp(ap->a_id, "BSEG_BYTES")) { ap->a_addr=0x20; ap->a_type=1; }
  85         }
  86 }
  87
  88 /*)Function     VOID    main(argc,argv)
  89  *
  90  *              int     argc            number of command line arguments + 1
  91  *              char *  argv[]          array of pointers to the command line
  92  *                                      arguments
  93  *
  94  *      The function main() evaluates the command line arguments to
  95  *      determine if the linker parameters are to input through 'stdin'
  96  *      or read from a command file.  The functiond getline() and parse()
  97  *      are to input and evaluate the linker parameters.  The linking process
  98  *      proceeds by making the first pass through each .rel file in the order
  99  *      presented to the linker.  At the end of the first pass the setbase(),
 100  *      lnkarea(), setgbl(), and symdef() functions are called to evaluate
 101  *      the base address terms, link all areas, define global variables,
 102  *      and look for undefined symbols.  Following these routines a linker
 103  *      map file may be produced and the linker output files may be opened.
 104  *      The second pass through the .rel files will output the linked data
 105  *      in one of the four supported formats.
 106  *
 107  *      local variables:
 108  *              char *  p               pointer to an argument string
 109  *              int     c               character from argument string
 110  *              int     i               loop counter
 111  *
 112  *      global variables:
 113  *                                              text line in ib[]
 114  *              lfile   *cfp            The pointer *cfp points to the
 115  *                                              current lfile structure
 116  *              char    ctype[]         array of character types, one per
 117  *                                              ASCII character
 118  *              lfile   *filep                  The pointer *filep points to the
 119  *                                              beginning of a linked list of
 120  *                                              lfile structures.
 121  *              head    *hp             Pointer to the current
 122  *                                              head structure
 123  *              char    ib[NINPUT]      .rel file text line
 124  *              char    *ip             pointer into the .rel file
 125  *              lfile   *linkp          pointer to first lfile structure
 126  *                                              containing an input .rel file
 127  *                                              specification
 128  *              int     lkerr           error flag
 129  *              int     mflag           Map output flag
 130  *              int     oflag           Output file type flag
 131  *              FILE    *ofp            Output file handle
 132  *                                              for word formats
 133  *              FILE    *ofph           Output file handle
 134  *                                              for high byte format
 135  *              FILE    *ofpl           Output file handle
 136  *                                              for low byte format
 137  *              int     pass            linker pass number
 138  *              int     pflag           print linker command file flag
 139  *              int     radix           current number conversion radix
 140  *              FILE    *sfp            The file handle sfp points to the
 141  *                                              currently open file
 142  *              lfile   *startp         asmlnk startup file structure
 143  *              FILE *  stdin           c_library
 144  *              FILE *  stdout          c_library
 145  *
 146  *      functions called:
 147  *              FILE *  afile()         lkmain.c
 148  *              int     fclose()        c_library
 149  *              int     fprintf()       c_library
 150  *              int     getline()       lklex.c
 151  *              VOID    library()       lklibr.c
 152  *              VOID    link_main()     lkmain.c
 153  *              VOID    lkexit()        lkmain.c
 154  *              VOID    lnkarea()       lkarea.c
 155  *              VOID    map()           lkmain.c
 156  *              VOID    new()           lksym.c
 157  *              int     parse()         lkmain.c
 158  *              VOID    reloc()         lkreloc.c
 159  *              VOID    search()        lklibr.c
 160  *              VOID    setbas()        lkmain.c
 161  *              VOID    setgbl()        lkmain.c
 162  *              VOID    symdef()        lksym.c
 163  *              VOID    usage()         lkmain.c
 164  *
 165  *      side effects:
 166  *              Completion of main() completes the linking process
 167  *              and may produce a map file (.map) and/or a linked
 168  *              data files (.ihx or .s19) and/or one or more
 169  *              relocated listing files (.rst).
 170  */
 171
 172 int
 173 main(argc, argv)
 174 char *argv[];
 175 {
 176         register char *p;
 177         register int c, i;
 178
 179         startp = (struct lfile *) new (sizeof (struct lfile));
 180
 181         pflag = 1;
 182         for (i=1; i<argc; ++i) {
 183                 p = argv[i];
 184                 if (*p == '-') {
 185                         while (ctype[c = *(++p)] & LETTER) {
 186                                 switch(c) {
 187
 188                                 case 'c':
 189                                 case 'C':
 190                                         startp->f_type = F_STD;
 191                                         break;
 192
 193                                 case 'f':
 194                                 case 'F':
 195                                         startp->f_type = F_LNK;
 196                                         break;
 197
 198                                 case 'n':
 199                                 case 'N':
 200                                         pflag = 0;
 201                                         break;
 202
 203                                 case 'p':
 204                                 case 'P':
 205                                         pflag = 1;
 206                                         break;
 207
 208                                 default:
 209                                         usage();
 210                                 }
 211                         }
 212                 } else {
 213                         if (startp->f_type == F_LNK) {
 214                                 startp->f_idp = p;
 215                         }
 216                 }
 217         }
 218        if (startp->f_type == 0)
 219                 usage();
 220         if (startp->f_type == F_LNK && startp->f_idp == NULL)
 221                 usage();
 222
 223         cfp = NULL;
 224         sfp = NULL;
 225         filep = startp;
 226         while (1) {
 227                 ip = ib;
 228                 if (getline() == 0)
 229                         break;
 230                 if (pflag && sfp != stdin)
 231                         fprintf(stdout, "%s\n", ip);
 232                if (*ip == '\0' || parse())
 233                         break;
 234         }
 235
 236         if (sfp) {
 237             fclose(sfp);
 238             sfp = NULL;
 239         }
 240
 241         if (linkp == NULL)
 242                 usage();
 243
 244         syminit();
 245
 246         if (dflag){
 247             //dfp = afile("temp", "cdb", 1);
 248                 dfp = afile(linkp->f_idp,"cdb",1); //JCF: Nov 30, 2002
 249             if (dfp == NULL)
 250                 lkexit(1);
 251         }
 252
 253         for (pass=0; pass<2; ++pass) {
 254                 cfp = NULL;
 255                 sfp = NULL;
 256                 filep = linkp;
 257                 hp = NULL;
 258                 radix = 10;
 259
 260                 Areas51(); /*JCF: Create the default 8051 areas in the right order*/
 261
 262                 while (getline()) {
 263                         ip = ib;
 264
 265                         /* pass any "magic comments" to NoICE output */
 266                         if ((ip[0] == ';') && (ip[1] == '!') && jfp) {
 267                                 fprintf( jfp, "%s\n", &ip[2] );
 268                         }
 269                         link_main();
 270                 }
 271                 if (pass == 0) {
 272                         /*
 273                          * Search libraries for global symbols
 274                          */
 275                         search();
 276                         /*
 277                          * Set area base addresses.
 278                          */
 279                         setbas();
 280                         /*
 281                          * Link all area addresses.
 282                          */
 283                         lnkarea();
 284                         /*
 285                          * Process global definitions.
 286                          */
 287                         setgbl();
 288                         /*
 289                          * Check for undefined globals.
 290                          */
 291                         symdef(stderr);
 292
 293                         /* Open NoICE output file if requested */
 294                         if (jflag) {
 295                                 jfp = afile(linkp->f_idp, "NOI", 1);
 296                                 if (jfp == NULL) {
 297                                         lkexit(1);
 298                                 }
 299                         }
 300
 301                         /*
 302                          * Output Link Map if requested,
 303                          * or if NoICE output requested (since NoICE
 304                          * file is generated in part by map() processing)
 305                          */
 306                         if (mflag || jflag)
 307                                 map();
 308
 309                         if (sflag) /*JCF: memory usage summary output*/
 310                                 if(summary(areap))lkexit(1);
 311
 312                         if (iram_size)
 313                                 iramcheck();
 314
 315                         /*
 316                          * Open output file
 317                          */
 318                         if (oflag == 1) {
 319                                 ofp = afile(linkp->f_idp, "ihx", 1);
 320                                 if (ofp == NULL) {
 321                                         lkexit(1);
 322                                 }
 323                                 /* include NoICE command to load hex file */
 324                                 if (jfp) fprintf( jfp, "LOAD %s.IHX\n", linkp->f_idp );
 325
 326                         } else
 327                         if (oflag == 2) {
 328                                 ofp = afile(linkp->f_idp, "S19", 1);
 329                                 if (ofp == NULL) {
 330                                         lkexit(1);
 331                                 }
 332                                 /* include NoICE command to load hex file */
 333                                 if (jfp) fprintf( jfp, "LOAD %s.S19\n", linkp->f_idp );
 334                         }
 335                 } else {
 336                         /*
 337                          * Link in library files
 338                          */
 339                         library();
 340                         reloc('E');
 341                 }
 342         }
 343         //JCF:
 344         CreateAOMF51();
 345
 346         lkexit(lkerr);
 347         return 0;
 348 }
 349
 350 /*)Function     VOID    lkexit(i)
 351  *
 352  *                      int     i       exit code
 353  *
 354  *      The function lkexit() explicitly closes all open
 355  *      files and then terminates the program.
 356  *
 357  *      local variables:
 358  *              none
 359  *
 360  *      global variables:
 361  *              FILE *  mfp             file handle for .map
 362  *              FILE *  ofp             file handle for .ihx/.s19
 363  *              FILE *  rfp             file hanlde for .rst
 364  *              FILE *  sfp             file handle for .rel
 365  *              FILE *  tfp             file handle for .lst
 366  *
 367  *      functions called:
 368  *              int     fclose()        c_library
 369  *              VOID    exit()          c_library
 370  *
 371  *      side effects:
 372  *              All files closed. Program terminates.
 373  */
 374
 375 VOID
 376 lkexit(i)
 377 int i;
 378 {
 379         if (mfp != NULL) fclose(mfp);
 380         if (jfp != NULL) fclose(jfp);
 381         if (ofp != NULL) fclose(ofp);
 382         if (rfp != NULL) fclose(rfp);
 383         if (sfp != NULL) fclose(sfp);
 384         if (tfp != NULL) fclose(tfp);
 385         if (dfp != NULL) fclose(dfp);
 386         /*if (dfp != NULL)
 387             FILE *xfp = afile(linkp->f_idp,"cdb",1);
 388             dfp = freopen("temp.cdb","r",dfp);
 389             copyfile(xfp,dfp);
 390             fclose(xfp);
 391             fclose(dfp);
 392             unlink("temp.cdb");
 393         }*/
 394         exit(i);
 395 }
 396
 397 /*)Function     link_main()
 398  *
 399  *      The function link_main() evaluates the directives for each line of
 400  *      text read from the .rel file(s).  The valid directives processed
 401  *      are:
 402  *              X, D, Q, H, M, A, S, T, R, and P.
 403  *
 404  *      local variables:
 405  *              int     c               first non blank character of a line
 406  *
 407  *      global variables:
 408  *              head    *headp          The pointer to the first
 409  *                                              head structure of a linked list
 410  *              head    *hp             Pointer to the current
 411  *                                              head structure
 412  *              int     pass            linker pass number
 413  *              int     radix           current number conversion radix
 414  *
 415  *      functions called:
 416  *              char    endline()       lklex.c
 417  *              VOID    module()        lkhead.c
 418  *              VOID    newarea()       lkarea.c
 419  *              VOID    newhead()       lkhead.c
 420  *              sym *   newsym()        lksym.c
 421  *              VOID    reloc()         lkreloc.c
 422  *
 423  *      side effects:
 424  *              Head, area, and symbol structures are created and
 425  *              the radix is set as the .rel file(s) are read.
 426  */
 427
 428 VOID
 429 link_main()
 430 {
 431         register int c;
 432
 433         if ((c=endline()) == 0) { return; }
 434         switch (c) {
 435
 436         case 'X':
 437                 radix = 16;
 438                 break;
 439
 440         case 'D':
 441                 radix = 10;
 442                 break;
 443
 444         case 'Q':
 445                 radix = 8;
 446                 break;
 447
 448         case 'H':
 449                 if (pass == 0) {
 450                         newhead();
 451                 } else {
 452                         if (hp == 0) {
 453                                 hp = headp;
 454                         } else {
 455                                 hp = hp->h_hp;
 456                         }
 457                 }
 458                 sdp.s_area = NULL;
 459                 sdp.s_areax = NULL;
 460                 sdp.s_addr = 0;
 461                 // jwk lastExtendedAddress = -1;
 462                 break;
 463
 464         case 'M':
 465                 if (pass == 0)
 466                         module();
 467                 break;
 468
 469         case 'A':
 470                 if (pass == 0)
 471                         newarea();
 472                 if (sdp.s_area == NULL) {
 473                         sdp.s_area = areap;
 474                         sdp.s_areax = areap->a_axp;
 475                         sdp.s_addr = 0;
 476                 }
 477                 break;
 478
 479         case 'S':
 480                 if (pass == 0)
 481                         newsym();
 482                 break;
 483
 484         case 'T':
 485         case 'R':
 486         case 'P':
 487                 if (pass == 0)
 488                         break;
 489                 reloc(c);
 490                 break;
 491
 492         default:
 493                 break;
 494         }
 495         if (c == 'X' || c == 'D' || c == 'Q') {
 496                 if ((c = get()) == 'H') {
 497                         hilo = 1;
 498                 } else
 499                 if (c == 'L') {
 500                         hilo = 0;
 501                 }
 502         }
 503 }
 504
 505
 506 /*)Function     VOID    map()
 507  *
 508  *      The function map() opens the output map file and calls the various
 509  *      routines to
 510  *      (1) output the variables in each area,
 511  *      (2) list the files processed with module names,
 512  *      (3) list the libraries file processed,
 513  *      (4) list base address definitions,
 514  *      (5) list global variable definitions, and
 515  *      (6) list any undefined variables.
 516  *
 517  *      local variables:
 518  *              int             i               counter
 519  *              head *  hdp             pointer to head structure
 520  *              lbfile *lbfh            pointer to library file structure
 521  *
 522  *      global variables:
 523  *              area    *ap             Pointer to the current
 524  *                                              area structure
 525  *              area    *areap          The pointer to the first
 526  *                                              area structure of a linked list
 527  *              base    *basep          The pointer to the first
 528  *                                              base structure
 529  *              base    *bsp            Pointer to the current
 530  *                                              base structure
 531  *              lfile   *filep                  The pointer *filep points to the
 532  *                                              beginning of a linked list of
 533  *                                              lfile structures.
 534  *              globl   *globlp         The pointer to the first
 535  *                                              globl structure
 536  *              globl   *gsp            Pointer to the current
 537  *                                              globl structure
 538  *              head    *headp          The pointer to the first
 539  *                                              head structure of a linked list
 540  *              lbfile  *lbfhead        The pointer to the first
 541  *                                      lbfile structure of a linked list
 542  *              lfile   *linkp          pointer to first lfile structure
 543  *                                              containing an input REL file
 544  *                                              specification
 545  *              int     lop             current line number on page
 546  *              FILE    *mfp            Map output file handle
 547  *              int     page            current page number
 548  *
 549  *      functions called:
 550  *              FILE *  afile()         lkmain.c
 551  *              int     fprintf()       c_library
 552  *              VOID    lkexit()        lkmain.c
 553  *              VOID    lstarea()       lklist.c
 554  *              VOID    newpag()        lklist.c
 555  *              VOID    symdef()        lksym.c
 556  *
 557  *      side effects:
 558  *              The map file is created.
 559  */
 560
 561 VOID
 562 map()
 563 {
 564         register int i;
 565         register struct head *hdp;
 566         register struct lbfile *lbfh;
 567
 568         /*
 569          * Open Map File
 570          */
 571         mfp = afile(linkp->f_idp, "map", 1);
 572         if (mfp == NULL) {
 573                 lkexit(1);
 574         }
 575
 576         /*
 577          * Output Map Area Lists
 578          */
 579         page = 0;
 580         lop  = NLPP;
 581         ap = areap;
 582         while (ap) {
 583                 lstarea(ap);
 584                 ap = ap->a_ap;
 585         }
 586         /*
 587          * List Linked Files
 588          */
 589         newpag(mfp);
 590         fprintf(mfp, "\nFiles Linked      [ module(s) ]\n\n");
 591         hdp = headp;
 592         filep = linkp;
 593         while (filep) {
 594                 fprintf(mfp, "%-16s", filep->f_idp);
 595                 i = 0;
 596                 while ((hdp != NULL) && (hdp->h_lfile == filep)) {
 597                         if (i % 5) {
 598                             fprintf(mfp, ", %8.8s", hdp->m_id);
 599                         } else {
 600                             if (i) {
 601                                 fprintf(mfp, ",\n%20s%8.8s", "", hdp->m_id);
 602                             } else {
 603                                 fprintf(mfp, "  [ %8.8s", hdp->m_id);
 604                             }
 605                         }
 606                         hdp = hdp->h_hp;
 607                         i++;
 608                 }
 609                 if (i)
 610                         fprintf(mfp, " ]");
 611                 fprintf(mfp, "\n");
 612                 filep = filep->f_flp;
 613         }
 614         /*
 615          * List Linked Libraries
 616          */
 617         if (lbfhead != NULL) {
 618                 fprintf(mfp,
 619         "\nLibraries Linked                    [   object  file   ]\n\n");
 620                 for (lbfh=lbfhead; lbfh; lbfh=lbfh->next) {
 621                         fprintf(mfp, "%-32s    [ %16.16s ]\n",
 622                                 lbfh->libspc, lbfh->relfil);
 623                 }
 624                 fprintf(mfp, "\n");
 625         }
 626         /*
 627          * List Base Address Definitions
 628          */
 629         if (basep) {
 630                 newpag(mfp);
 631                 fprintf(mfp, "\nUser Base Address Definitions\n\n");
 632                 bsp = basep;
 633                 while (bsp) {
 634                         fprintf(mfp, "%s\n", bsp->b_strp);
 635                         bsp = bsp->b_base;
 636                 }
 637         }
 638         /*
 639          * List Global Definitions
 640          */
 641         if (globlp) {
 642                 newpag(mfp);
 643                 fprintf(mfp, "\nUser Global Definitions\n\n");
 644                 gsp = globlp;
 645                 while (gsp) {
 646                         fprintf(mfp, "%s\n", gsp->g_strp);
 647                         gsp = gsp->g_globl;
 648                 }
 649         }
 650         fprintf(mfp, "\n\f");
 651         symdef(mfp);
 652 }
 653
 654 /*)Function     int     parse()
 655  *
 656  *      The function parse() evaluates all command line or file input
 657  *      linker directives and updates the appropriate variables.
 658  *
 659  *      local variables:
 660  *              int     c               character value
 661  *              char    fid[]           file id string
 662  *
 663  *      global variables:
 664  *              char    ctype[]         array of character types, one per
 665  *                                              ASCII character
 666  *              lfile   *lfp            pointer to current lfile structure
 667  *                                              being processed by parse()
 668  *              lfile   *linkp          pointer to first lfile structure
 669  *                                              containing an input REL file
 670  *                                              specification
 671  *              int     mflag           Map output flag
 672  *              int     oflag           Output file type flag
 673  *              int     pflag           print linker command file flag
 674  *              FILE *  stderr          c_library
 675  *              int     uflag           Relocated listing flag
 676  *              int     xflag           Map file radix type flag
 677  *
 678  *      Functions called:
 679  *              VOID    addlib()        lklibr.c
 680  *              VOID    addpath()       lklibr.c
 681  *              VOID    bassav()        lkmain.c
 682  *              int     fprintf()       c_library
 683  *              VOID    gblsav()        lkmain.c
 684  *              VOID    getfid()        lklex.c
 685  *              char    getnb()         lklex.c
 686  *              VOID    lkexit()        lkmain.c
 687  *              char *  strcpy()        c_library
 688  *              int     strlen()        c_library
 689  *
 690  *      side effects:
 691  *              Various linker flags are updated and the linked
 692  *              structure lfile is created.
 693  */
 694
 695 int
 696 parse()
 697 {
 698         register int c;
 699         char fid[NINPUT];
 700
 701         while ((c = getnb()) != 0) {
 702                 if ( c == '-') {
 703                         while (ctype[c=get()] & LETTER) {
 704                                 switch(c) {
 705
 706                                 case 'i':
 707                                 case 'I':
 708                                         oflag = 1;
 709                                         break;
 710
 711                                 case 's':
 712                                 case 'S':
 713                                         oflag = 2;
 714                                         break;
 715
 716                                 case 'm':
 717                                 case 'M':
 718                                         ++mflag;
 719                                         break;
 720
 721                                 case 'y': /*JCF: memory usage summary output*/
 722                                 case 'Y':
 723                                         ++sflag;
 724                                         break;
 725
 726                                 case 'j':
 727                                 case 'J':
 728                                         jflag = 1;
 729                                         break;
 730
 731                                 case 'u':
 732                                 case 'U':
 733                                         uflag = 1;
 734                                         break;
 735                                 case 'r':
 736                                 case 'R':
 737                                         rflag = 1;
 738                                         break;
 739                                 case 'x':
 740                                 case 'X':
 741                                         xflag = 0;
 742                                         break;
 743
 744                                 case 'q':
 745                                 case 'Q':
 746                                         xflag = 1;
 747                                         break;
 748
 749                                 case 'd':
 750                                 case 'D':
 751                                         xflag = 2;
 752                                         break;
 753
 754                                 case 'e':
 755                                 case 'E':
 756                                         return(1);
 757
 758                                 case 'n':
 759                                 case 'N':
 760                                         pflag = 0;
 761                                         break;
 762
 763                                 case 'p':
 764                                 case 'P':
 765                                         pflag = 1;
 766                                         break;
 767
 768                                 case 'b':
 769                                 case 'B':
 770                                         bassav();
 771                                         return(0);
 772
 773                                 case 'g':
 774                                 case 'G':
 775                                         gblsav();
 776                                         return(0);
 777
 778                                 case 'k':
 779                                 case 'K':
 780                                         addpath();
 781                                         return(0);
 782
 783                                 case 'l':
 784                                 case 'L':
 785                                         addlib();
 786                                         return(0);
 787
 788                                 case 'a':
 789                                 case 'A':
 790                                         iramsav();
 791                                         return(0);
 792
 793                                 case 'z':
 794                                 case 'Z':
 795                                         dflag = 1;
 796                                         return(0);
 797                                 default:
 798                                         fprintf(stderr, "Invalid option\n");
 799                                         lkexit(1);
 800                                 }
 801                         }
 802                 } else
 803                if (ctype[c] & ILL) {
 804                        fprintf(stderr, "Invalid input");
 805                        lkexit(1);
 806                } else {
 807                         if (linkp == NULL) {
 808                                 linkp = (struct lfile *)
 809                                         new (sizeof (struct lfile));
 810                                 lfp = linkp;
 811                         } else {
 812                                 lfp->f_flp = (struct lfile *)
 813                                                 new (sizeof (struct lfile));
 814                                 lfp = lfp->f_flp;
 815                         }
 816                         getfid(fid, c);
 817                         lfp->f_idp = (char *) new (strlen(fid)+1);
 818                         strcpy(lfp->f_idp, fid);
 819                         lfp->f_type = F_REL;
 820                 }
 821         }
 822         return(0);
 823 }
 824
 825 /*)Function     VOID    bassav()
 826  *
 827  *      The function bassav() creates a linked structure containing
 828  *      the base address strings input to the linker.
 829  *
 830  *      local variables:
 831  *              none
 832  *
 833  *      global variables:
 834  *              base    *basep          The pointer to the first
 835  *                                              base structure
 836  *              base    *bsp            Pointer to the current
 837  *                                              base structure
 838  *              char    *ip             pointer into the REL file
 839  *                                              text line in ib[]
 840  *
 841  *       functions called:
 842  *              char    getnb()         lklex.c
 843  *              VOID *  new()           lksym.c
 844  *              int     strlen()        c_library
 845  *              char *  strcpy()        c_library
 846  *              VOID    unget()         lklex.c
 847  *
 848  *      side effects:
 849  *              The basep structure is created.
 850  */
 851
 852 VOID
 853 bassav()
 854 {
 855         if (basep == NULL) {
 856                 basep = (struct base *)
 857                         new (sizeof (struct base));
 858                 bsp = basep;
 859         } else {
 860                 bsp->b_base = (struct base *)
 861                                 new (sizeof (struct base));
 862                 bsp = bsp->b_base;
 863         }
 864         unget(getnb());
 865         bsp->b_strp = (char *) new (strlen(ip)+1);
 866         strcpy(bsp->b_strp, ip);
 867 }
 868
 869 /*)Function     VOID    setbas()
 870  *
 871  *      The function setbas() scans the base address lines in hte
 872  *      basep structure, evaluates the arguments, and sets beginning
 873  *      address of the specified areas.
 874  *
 875  *      local variables:
 876  *              int     v               expression value
 877  *              char    id[]            base id string
 878  *
 879  *      global variables:
 880  *              area    *ap             Pointer to the current
 881  *                                              area structure
 882  *              area    *areap          The pointer to the first
 883  *                                              area structure of a linked list
 884  *              base    *basep          The pointer to the first
 885  *                                              base structure
 886  *              base    *bsp            Pointer to the current
 887  *                                              base structure
 888  *              char    *ip             pointer into the REL file
 889  *                                              text line in ib[]
 890  *              int     lkerr           error flag
 891  *
 892  *       functions called:
 893  *              Addr_T  expr()          lkeval.c
 894  *              int     fprintf()       c_library
 895  *              VOID    getid()         lklex.c
 896  *              char    getnb()         lklex.c
 897  *              int     symeq()         lksym.c
 898  *
 899  *      side effects:
 900  *              The base address of an area is set.
 901  */
 902
 903 VOID
 904 setbas()
 905 {
 906         register int v;
 907         char id[NCPS];
 908
 909         bsp = basep;
 910         while (bsp) {
 911                 ip = bsp->b_strp;
 912                 getid(id, -1);
 913                 if (getnb() == '=') {
 914                         v = expr(0);
 915                         for (ap = areap; ap != NULL; ap = ap->a_ap) {
 916                                 if (symeq(id, ap->a_id))
 917                                         break;
 918                         }
 919                         if (ap == NULL) {
 920                                 fprintf(stderr,
 921                                 "No definition of area %s\n", id);
 922                                 lkerr++;
 923                         } else {
 924                                 ap->a_addr = v;
 925                                 ap->a_type = 1; /* JLH: value set */
 926                         }
 927                 } else {
 928                         fprintf(stderr, "No '=' in base expression");
 929                         lkerr++;
 930                 }
 931                 bsp = bsp->b_base;
 932         }
 933 }
 934
 935 /*)Function     VOID    gblsav()
 936  *
 937  *      The function gblsav() creates a linked structure containing
 938  *      the global variable strings input to the linker.
 939  *
 940  *      local variable:
 941  *              none
 942  *
 943  *      global variables:
 944  *              globl   *globlp         The pointer to the first
 945  *                                              globl structure
 946  *              globl   *gsp            Pointer to the current
 947  *                                              globl structure
 948  *              char    *ip             pointer into the REL file
 949  *                                              text line in ib[]
 950  *              int     lkerr           error flag
 951  *
 952  *      functions called:
 953  *              char    getnb()         lklex.c
 954  *              VOID *  new()           lksym.c
 955  *              int     strlen()        c_library
 956  *              char *  strcpy()        c_library
 957  *              VOID    unget()         lklex.c
 958  *
 959  *      side effects:
 960  *              The globlp structure is created.
 961  */
 962
 963 VOID
 964 gblsav()
 965 {
 966         if (globlp == NULL) {
 967                 globlp = (struct globl *)
 968                         new (sizeof (struct globl));
 969                 gsp = globlp;
 970         } else {
 971                 gsp->g_globl = (struct globl *)
 972                                 new (sizeof (struct globl));
 973                 gsp = gsp->g_globl;
 974         }
 975         unget(getnb());
 976         gsp->g_strp = (char *) new (strlen(ip)+1);
 977         strcpy(gsp->g_strp, ip);
 978 }
 979
 980 /*)Function     VOID    setgbl()
 981  *
 982  *      The function setgbl() scans the global variable lines in hte
 983  *      globlp structure, evaluates the arguments, and sets a variable
 984  *      to this value.
 985  *
 986  *      local variables:
 987  *              int     v               expression value
 988  *              char    id[]            base id string
 989  *              sym *   sp              pointer to a symbol structure
 990  *
 991  *      global variables:
 992  *              char    *ip             pointer into the REL file
 993  *                                              text line in ib[]
 994  *              globl   *globlp         The pointer to the first
 995  *                                              globl structure
 996  *              globl   *gsp            Pointer to the current
 997  *                                              globl structure
 998  *              FILE *  stderr          c_library
 999  *              int     lkerr           error flag
1000  *
1001  *       functions called:
1002  *              Addr_T  expr()          lkeval.c
1003  *              int     fprintf()       c_library
1004  *              VOID    getid()         lklex.c
1005  *              char    getnb()         lklex.c
1006  *              sym *   lkpsym()        lksym.c
1007  *
1008  *      side effects:
1009  *              The value of a variable is set.
1010  */
1011
1012 VOID
1013 setgbl()
1014 {
1015         register int v;
1016         register struct sym *sp;
1017         char id[NCPS];
1018
1019         gsp = globlp;
1020         while (gsp) {
1021                 ip = gsp->g_strp;
1022                 getid(id, -1);
1023                 if (getnb() == '=') {
1024                         v = expr(0);
1025                         sp = lkpsym(id, 0);
1026                         if (sp == NULL) {
1027                                 fprintf(stderr,
1028                                 "No definition of symbol %s\n", id);
1029                                 lkerr++;
1030                         } else {
1031                                 if (sp->s_flag & S_DEF) {
1032                                         fprintf(stderr,
1033                                         "Redefinition of symbol %s\n", id);
1034                                         lkerr++;
1035                                         sp->s_axp = NULL;
1036                                 }
1037                                 sp->s_addr = v;
1038                                 sp->s_type |= S_DEF;
1039                         }
1040                 } else {
1041                         fprintf(stderr, "No '=' in global expression");
1042                         lkerr++;
1043                 }
1044                 gsp = gsp->g_globl;
1045         }
1046 }
1047
1048 /*)Function     FILE *  afile(fn,, ft, wf)
1049  *
1050  *              char *  fn              file specification string
1051  *              char *  ft              file type string
1052  *              int     wf              read(0)/write(1) flag
1053  *
1054  *      The function afile() opens a file for reading or writing.
1055  *              (1)     If the file type specification string ft
1056  *                      is not NULL then a file specification is
1057  *                      constructed with the file path\name in fn
1058  *                      and the extension in ft.
1059  *              (2)     If the file type specification string ft
1060  *                      is NULL then the file specification is
1061  *                      constructed from fn.  If fn does not have
1062  *                      a file type then the default .rel file
1063  *                      type is appended to the file specification.
1064  *
1065  *      afile() returns a file handle for the opened file or aborts
1066  *      the assembler on an open error.
1067  *
1068  *      local variables:
1069  *              int     c               character value
1070  *              char    fb[]            constructed file specification string
1071  *              FILE *  fp              filehandle for opened file
1072  *              char *  p1              pointer to filespec string fn
1073  *              char *  p2              pointer to filespec string fb
1074  *              char *  p3              pointer to filetype string ft
1075  *
1076  *      global variables:
1077  *              int     lkerr           error flag
1078  *
1079  *      functions called:
1080  *              FILE *  fopen()         c_library
1081  *              int     fprintf()       c_library
1082  *
1083  *      side effects:
1084  *              File is opened for read or write.
1085  */
1086
1087 FILE *
1088 afile(fn, ft, wf)
1089 char *fn;
1090 char *ft;
1091 {
1092         register char *p1, *p2, *p3;
1093         register int c;
1094         FILE *fp;
1095         char fb[PATH_MAX];
1096         char *omode = (wf ? (wf == 2 ? "a" : "w") : "r");
1097
1098         p1 = fn;
1099         p2 = fb;
1100         p3 = ft;
1101         while ((c = *p1++) != 0 && c != FSEPX) {
1102                 if (p2 < &fb[PATH_MAX-4])
1103                         *p2++ = c;
1104         }
1105         *p2++ = FSEPX;
1106         if (*p3 == 0) {
1107                 if (c == FSEPX) {
1108                         p3 = p1;
1109                 } else {
1110                         p3 = "rel";
1111                 }
1112         }
1113         while ((c = *p3++) != 0) {
1114                 if (p2 < &fb[PATH_MAX-1])
1115                         *p2++ = c;
1116         }
1117         *p2++ = 0;
1118         if ((fp = fopen(fb, omode)) == NULL) {
1119             if (strcmp(ft,"adb")) {
1120                 fprintf(stderr, "%s: cannot %s.\n", fb, wf?"create":"open");
1121                 lkerr++;
1122             }
1123         }
1124         return (fp);
1125 }
1126
1127 /*)Function     VOID    iramsav()
1128  *
1129  *      The function iramsav() stores the size of the chip's internal RAM.
1130  *      This is used after linking to check that variable assignment to this
1131  *      dataspace didn't overflow into adjoining segments.  Variables in the
1132  *      DSEG, OSEG, and ISEG are assigned to this dataspace.
1133  *
1134  *      local variables:
1135  *              none
1136  *
1137  *      global variables:
1138  *              char    *ip             pointer into the REL file
1139  *                                              text line in ib[]
1140  *              unsigned int            size of chip's internal
1141  *                      iram_size               RAM segment
1142  *
1143  *       functions called:
1144  *              char    getnb()         lklex.c
1145  *              VOID    unget()         lklex.c
1146  *              Addr_T  expr()          lkeval.c
1147  *
1148  *      side effects:
1149  *              The iram_size may be modified.
1150  */
1151
1152 VOID
1153 iramsav()
1154 {
1155   unget(getnb());
1156   if (ip && *ip)
1157     //iram_size = atoi(ip);
1158     iram_size = expr(0);        /* evaluate size expression */
1159   else
1160     iram_size = 128;            /* Default is 128 (0x80) bytes */
1161 }
1162
1163 /*)Function     VOID    iramcheck()
1164  *
1165  *      The function iramcheck() is used at the end of linking to check that
1166  *      the internal RAM area wasn't overflowed by too many variable
1167  *      assignments.  Variables in the DSEG, ISEG, and OSEG are assigned to
1168  *      the chip's internal RAM.
1169  *
1170  *      local variables:
1171  *              none
1172  *
1173  *      global variables:
1174  *              unsigned int            size of chip's internal
1175  *                      iram_size               RAM segment
1176  *              struct area             linked list of memory
1177  *                      *areap                  areas
1178  *
1179  *       functions called:
1180  *
1181  *      side effects:
1182  */
1183
1184 VOID
1185 iramcheck()
1186 {
1187   register unsigned int last_addr;
1188   register struct area *ap;
1189
1190   for (ap = areap; ap; ap=ap->a_ap) {
1191     if ((ap->a_size != 0) &&
1192         (!strcmp(ap->a_id, "DSEG") ||
1193          !strcmp(ap->a_id, "OSEG") ||
1194          !strcmp(ap->a_id, "ISEG")
1195         )
1196        )
1197     {
1198       last_addr = ap->a_addr + ap->a_size - 1;
1199       if (last_addr >= iram_size)
1200         fprintf(stderr,
1201                 "\nWARNING! Segment %s extends past the end\n"
1202                 "         of internal RAM.  Check map file.\n",
1203                 ap->a_id);
1204     }
1205   }
1206 }
1207
1208 char *usetxt[] = {
1209         "Startup:",
1210         "  -c   Command line input",
1211         "  -f   file[LNK] File input",
1212         "  -p   Prompt and echo of file[LNK] to stdout (default)",
1213         "  -n   No echo of file[LNK] to stdout",
1214 /*      "Usage: [-Options] file [file ...]", */
1215         "Libraries:",
1216         "  -k   Library path specification, one per -k",
1217         "  -l   Library file specification, one per -l",
1218         "Relocation:",
1219         "  -b   area base address = expression",
1220         "  -g   global symbol = expression",
1221         "Map format:",
1222         "  -m   Map output generated as file[MAP]",
1223         "  -x   Hexadecimal (default),  -d  Decimal,  -q  Octal",
1224         "Output:",
1225         "  -i   Intel Hex as file[IHX]",
1226         "  -s   Motorola S19 as file[S19]",
1227         "  -j   Produce NoICE debug as file[NOI]",
1228         "  -z   Produce SDCdb debug as file[cdb]",
1229 /*      "List:", */
1230         "  -u   Update listing file(s) with link data as file(s)[.RST]",
1231         "Miscellaneous:\n"
1232         "  -a   [iram-size] Check for internal RAM overflow",
1233         "End:",
1234         "  -e   or null line terminates input",
1235         0
1236 };
1237
1238 /*)Function     VOID    usage()
1239  *
1240  *      The function usage() outputs to the stderr device the
1241  *      assembler name and version and a list of valid assembler options.
1242  *
1243  *      local variables:
1244  *              char ** dp              pointer to an array of
1245  *                                      text string pointers.
1246  *
1247  *      global variables:
1248  *              FILE *  stderr          c_library
1249  *
1250  *      functions called:
1251  *              int     fprintf()       c_library
1252  *
1253  *      side effects:
1254  *              none
1255  */
1256
1257 VOID
1258 usage()
1259 {
1260         register char   **dp;
1261
1262         fprintf(stderr, "\nASxxxx Linker %s\n\n", VERSION);
1263         for (dp = usetxt; *dp; dp++)
1264                 fprintf(stderr, "%s\n", *dp);
1265         lkexit(1);
1266 }
1267
1268 /*)Function     VOID    copyfile()
1269  *
1270  *              FILE    *dest           destination file
1271  *              FILE    *src            source file
1272  *
1273  *      function will copy source file to destination file
1274  *
1275  *
1276  *      functions called:
1277  *              int     fgetc()         c_library
1278  *              int     fputc()         c_library
1279  *
1280  *      side effects:
1281  *              none
1282  */
1283 VOID copyfile (dest,src)
1284 FILE *src,*dest ;
1285 {
1286     int ch;
1287     while ((ch = fgetc(src)) != EOF) {
1288
1289         fputc(ch,dest);
1290     }
1291 }