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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                 SaveLinkedFilePath(linkp->f_idp); //Must be the first one...
 249                 dfp = afile(linkp->f_idp,"cdb",1); //JCF: Nov 30, 2002
 250             if (dfp == NULL)
 251                 lkexit(1);
 252         }
 253
 254         for (pass=0; pass<2; ++pass) {
 255                 cfp = NULL;
 256                 sfp = NULL;
 257                 filep = linkp;
 258                 hp = NULL;
 259                 radix = 10;
 260
 261                 Areas51(); /*JCF: Create the default 8051 areas in the right order*/
 262
 263                 while (getline()) {
 264                         ip = ib;
 265
 266                         /* pass any "magic comments" to NoICE output */
 267                         if ((ip[0] == ';') && (ip[1] == '!') && jfp) {
 268                                 fprintf( jfp, "%s\n", &ip[2] );
 269                         }
 270                         link_main();
 271                 }
 272                 if (pass == 0) {
 273                         /*
 274                          * Search libraries for global symbols
 275                          */
 276                         search();
 277                         /*
 278                          * Set area base addresses.
 279                          */
 280                         setbas();
 281                         /*
 282                          * Link all area addresses.
 283                          */
 284                         lnkarea();
 285                         /*
 286                          * Process global definitions.
 287                          */
 288                         setgbl();
 289                         /*
 290                          * Check for undefined globals.
 291                          */
 292                         symdef(stderr);
 293
 294                         /* Open NoICE output file if requested */
 295                         if (jflag) {
 296                                 jfp = afile(linkp->f_idp, "NOI", 1);
 297                                 if (jfp == NULL) {
 298                                         lkexit(1);
 299                                 }
 300                         }
 301
 302                         /*
 303                          * Output Link Map if requested,
 304                          * or if NoICE output requested (since NoICE
 305                          * file is generated in part by map() processing)
 306                          */
 307                         if (mflag || jflag)
 308                                 map();
 309
 310                         if (sflag) /*JCF: memory usage summary output*/
 311                                 if(summary(areap))lkexit(1);
 312
 313                         if (iram_size)
 314                                 iramcheck();
 315
 316                         /*
 317                          * Open output file
 318                          */
 319                         if (oflag == 1) {
 320                                 ofp = afile(linkp->f_idp, "ihx", 1);
 321                                 if (ofp == NULL) {
 322                                         lkexit(1);
 323                                 }
 324                                 /* include NoICE command to load hex file */
 325                                 if (jfp) fprintf( jfp, "LOAD %s.IHX\n", linkp->f_idp );
 326
 327                         } else
 328                         if (oflag == 2) {
 329                                 ofp = afile(linkp->f_idp, "S19", 1);
 330                                 if (ofp == NULL) {
 331                                         lkexit(1);
 332                                 }
 333                                 /* include NoICE command to load hex file */
 334                                 if (jfp) fprintf( jfp, "LOAD %s.S19\n", linkp->f_idp );
 335                         }
 336                 } else {
 337                         /*
 338                          * Link in library files
 339                          */
 340                         library();
 341                         reloc('E');
 342                 }
 343         }
 344         //JCF:
 345         CreateAOMF51();
 346
 347         lkexit(lkerr);
 348         return 0;
 349 }
 350
 351 /*)Function     VOID    lkexit(i)
 352  *
 353  *                      int     i       exit code
 354  *
 355  *      The function lkexit() explicitly closes all open
 356  *      files and then terminates the program.
 357  *
 358  *      local variables:
 359  *              none
 360  *
 361  *      global variables:
 362  *              FILE *  mfp             file handle for .map
 363  *              FILE *  ofp             file handle for .ihx/.s19
 364  *              FILE *  rfp             file hanlde for .rst
 365  *              FILE *  sfp             file handle for .rel
 366  *              FILE *  tfp             file handle for .lst
 367  *
 368  *      functions called:
 369  *              int     fclose()        c_library
 370  *              VOID    exit()          c_library
 371  *
 372  *      side effects:
 373  *              All files closed. Program terminates.
 374  */
 375
 376 VOID
 377 lkexit(i)
 378 int i;
 379 {
 380         if (mfp != NULL) fclose(mfp);
 381         if (jfp != NULL) fclose(jfp);
 382         if (ofp != NULL) fclose(ofp);
 383         if (rfp != NULL) fclose(rfp);
 384         if (sfp != NULL) fclose(sfp);
 385         if (tfp != NULL) fclose(tfp);
 386         if (dfp != NULL) fclose(dfp);
 387         /*if (dfp != NULL)
 388             FILE *xfp = afile(linkp->f_idp,"cdb",1);
 389             dfp = freopen("temp.cdb","r",dfp);
 390             copyfile(xfp,dfp);
 391             fclose(xfp);
 392             fclose(dfp);
 393             unlink("temp.cdb");
 394         }*/
 395         exit(i);
 396 }
 397
 398 /*)Function     link_main()
 399  *
 400  *      The function link_main() evaluates the directives for each line of
 401  *      text read from the .rel file(s).  The valid directives processed
 402  *      are:
 403  *              X, D, Q, H, M, A, S, T, R, and P.
 404  *
 405  *      local variables:
 406  *              int     c               first non blank character of a line
 407  *
 408  *      global variables:
 409  *              head    *headp          The pointer to the first
 410  *                                              head structure of a linked list
 411  *              head    *hp             Pointer to the current
 412  *                                              head structure
 413  *              int     pass            linker pass number
 414  *              int     radix           current number conversion radix
 415  *
 416  *      functions called:
 417  *              char    endline()       lklex.c
 418  *              VOID    module()        lkhead.c
 419  *              VOID    newarea()       lkarea.c
 420  *              VOID    newhead()       lkhead.c
 421  *              sym *   newsym()        lksym.c
 422  *              VOID    reloc()         lkreloc.c
 423  *
 424  *      side effects:
 425  *              Head, area, and symbol structures are created and
 426  *              the radix is set as the .rel file(s) are read.
 427  */
 428
 429 VOID
 430 link_main()
 431 {
 432         register int c;
 433
 434         if ((c=endline()) == 0) { return; }
 435         switch (c) {
 436
 437         case 'X':
 438                 radix = 16;
 439                 break;
 440
 441         case 'D':
 442                 radix = 10;
 443                 break;
 444
 445         case 'Q':
 446                 radix = 8;
 447                 break;
 448
 449         case 'H':
 450                 if (pass == 0) {
 451                         newhead();
 452                 } else {
 453                         if (hp == 0) {
 454                                 hp = headp;
 455                         } else {
 456                                 hp = hp->h_hp;
 457                         }
 458                 }
 459                 sdp.s_area = NULL;
 460                 sdp.s_areax = NULL;
 461                 sdp.s_addr = 0;
 462                 // jwk lastExtendedAddress = -1;
 463                 break;
 464
 465         case 'M':
 466                 if (pass == 0)
 467                         module();
 468                 break;
 469
 470         case 'A':
 471                 if (pass == 0)
 472                         newarea();
 473                 if (sdp.s_area == NULL) {
 474                         sdp.s_area = areap;
 475                         sdp.s_areax = areap->a_axp;
 476                         sdp.s_addr = 0;
 477                 }
 478                 break;
 479
 480         case 'S':
 481                 if (pass == 0)
 482                         newsym();
 483                 break;
 484
 485         case 'T':
 486         case 'R':
 487         case 'P':
 488                 if (pass == 0)
 489                         break;
 490                 reloc(c);
 491                 break;
 492
 493         default:
 494                 break;
 495         }
 496         if (c == 'X' || c == 'D' || c == 'Q') {
 497                 if ((c = get()) == 'H') {
 498                         hilo = 1;
 499                 } else
 500                 if (c == 'L') {
 501                         hilo = 0;
 502                 }
 503         }
 504 }
 505
 506
 507 /*)Function     VOID    map()
 508  *
 509  *      The function map() opens the output map file and calls the various
 510  *      routines to
 511  *      (1) output the variables in each area,
 512  *      (2) list the files processed with module names,
 513  *      (3) list the libraries file processed,
 514  *      (4) list base address definitions,
 515  *      (5) list global variable definitions, and
 516  *      (6) list any undefined variables.
 517  *
 518  *      local variables:
 519  *              int             i               counter
 520  *              head *  hdp             pointer to head structure
 521  *              lbfile *lbfh            pointer to library file structure
 522  *
 523  *      global variables:
 524  *              area    *ap             Pointer to the current
 525  *                                              area structure
 526  *              area    *areap          The pointer to the first
 527  *                                              area structure of a linked list
 528  *              base    *basep          The pointer to the first
 529  *                                              base structure
 530  *              base    *bsp            Pointer to the current
 531  *                                              base structure
 532  *              lfile   *filep                  The pointer *filep points to the
 533  *                                              beginning of a linked list of
 534  *                                              lfile structures.
 535  *              globl   *globlp         The pointer to the first
 536  *                                              globl structure
 537  *              globl   *gsp            Pointer to the current
 538  *                                              globl structure
 539  *              head    *headp          The pointer to the first
 540  *                                              head structure of a linked list
 541  *              lbfile  *lbfhead        The pointer to the first
 542  *                                      lbfile structure of a linked list
 543  *              lfile   *linkp          pointer to first lfile structure
 544  *                                              containing an input REL file
 545  *                                              specification
 546  *              int     lop             current line number on page
 547  *              FILE    *mfp            Map output file handle
 548  *              int     page            current page number
 549  *
 550  *      functions called:
 551  *              FILE *  afile()         lkmain.c
 552  *              int     fprintf()       c_library
 553  *              VOID    lkexit()        lkmain.c
 554  *              VOID    lstarea()       lklist.c
 555  *              VOID    newpag()        lklist.c
 556  *              VOID    symdef()        lksym.c
 557  *
 558  *      side effects:
 559  *              The map file is created.
 560  */
 561
 562 VOID
 563 map()
 564 {
 565         register int i;
 566         register struct head *hdp;
 567         register struct lbfile *lbfh;
 568
 569         /*
 570          * Open Map File
 571          */
 572         mfp = afile(linkp->f_idp, "map", 1);
 573         if (mfp == NULL) {
 574                 lkexit(1);
 575         }
 576
 577         /*
 578          * Output Map Area Lists
 579          */
 580         page = 0;
 581         lop  = NLPP;
 582         ap = areap;
 583         while (ap) {
 584                 lstarea(ap);
 585                 ap = ap->a_ap;
 586         }
 587         /*
 588          * List Linked Files
 589          */
 590         newpag(mfp);
 591         fprintf(mfp, "\nFiles Linked      [ module(s) ]\n\n");
 592         hdp = headp;
 593         filep = linkp;
 594         while (filep) {
 595                 fprintf(mfp, "%-16s", filep->f_idp);
 596                 i = 0;
 597                 while ((hdp != NULL) && (hdp->h_lfile == filep)) {
 598                         if (i % 5) {
 599                             fprintf(mfp, ", %8.8s", hdp->m_id);
 600                         } else {
 601                             if (i) {
 602                                 fprintf(mfp, ",\n%20s%8.8s", "", hdp->m_id);
 603                             } else {
 604                                 fprintf(mfp, "  [ %8.8s", hdp->m_id);
 605                             }
 606                         }
 607                         hdp = hdp->h_hp;
 608                         i++;
 609                 }
 610                 if (i)
 611                         fprintf(mfp, " ]");
 612                 fprintf(mfp, "\n");
 613                 filep = filep->f_flp;
 614         }
 615         /*
 616          * List Linked Libraries
 617          */
 618         if (lbfhead != NULL) {
 619                 fprintf(mfp,
 620         "\nLibraries Linked                    [   object  file   ]\n\n");
 621                 for (lbfh=lbfhead; lbfh; lbfh=lbfh->next) {
 622                         fprintf(mfp, "%-32s    [ %16.16s ]\n",
 623                                 lbfh->libspc, lbfh->relfil);
 624                 }
 625                 fprintf(mfp, "\n");
 626         }
 627         /*
 628          * List Base Address Definitions
 629          */
 630         if (basep) {
 631                 newpag(mfp);
 632                 fprintf(mfp, "\nUser Base Address Definitions\n\n");
 633                 bsp = basep;
 634                 while (bsp) {
 635                         fprintf(mfp, "%s\n", bsp->b_strp);
 636                         bsp = bsp->b_base;
 637                 }
 638         }
 639         /*
 640          * List Global Definitions
 641          */
 642         if (globlp) {
 643                 newpag(mfp);
 644                 fprintf(mfp, "\nUser Global Definitions\n\n");
 645                 gsp = globlp;
 646                 while (gsp) {
 647                         fprintf(mfp, "%s\n", gsp->g_strp);
 648                         gsp = gsp->g_globl;
 649                 }
 650         }
 651         fprintf(mfp, "\n\f");
 652         symdef(mfp);
 653 }
 654
 655 /*)Function     int     parse()
 656  *
 657  *      The function parse() evaluates all command line or file input
 658  *      linker directives and updates the appropriate variables.
 659  *
 660  *      local variables:
 661  *              int     c               character value
 662  *              char    fid[]           file id string
 663  *
 664  *      global variables:
 665  *              char    ctype[]         array of character types, one per
 666  *                                              ASCII character
 667  *              lfile   *lfp            pointer to current lfile structure
 668  *                                              being processed by parse()
 669  *              lfile   *linkp          pointer to first lfile structure
 670  *                                              containing an input REL file
 671  *                                              specification
 672  *              int     mflag           Map output flag
 673  *              int     oflag           Output file type flag
 674  *              int     pflag           print linker command file flag
 675  *              FILE *  stderr          c_library
 676  *              int     uflag           Relocated listing flag
 677  *              int     xflag           Map file radix type flag
 678  *
 679  *      Functions called:
 680  *              VOID    addlib()        lklibr.c
 681  *              VOID    addpath()       lklibr.c
 682  *              VOID    bassav()        lkmain.c
 683  *              int     fprintf()       c_library
 684  *              VOID    gblsav()        lkmain.c
 685  *              VOID    getfid()        lklex.c
 686  *              char    getnb()         lklex.c
 687  *              VOID    lkexit()        lkmain.c
 688  *              char *  strcpy()        c_library
 689  *              int     strlen()        c_library
 690  *
 691  *      side effects:
 692  *              Various linker flags are updated and the linked
 693  *              structure lfile is created.
 694  */
 695
 696 int
 697 parse()
 698 {
 699         register int c;
 700         char fid[NINPUT];
 701
 702         while ((c = getnb()) != 0) {
 703                 if ( c == '-') {
 704                         while (ctype[c=get()] & LETTER) {
 705                                 switch(c) {
 706
 707                                 case 'i':
 708                                 case 'I':
 709                                         oflag = 1;
 710                                         break;
 711
 712                                 case 's':
 713                                 case 'S':
 714                                         oflag = 2;
 715                                         break;
 716
 717                                 case 'm':
 718                                 case 'M':
 719                                         ++mflag;
 720                                         break;
 721
 722                                 case 'y': /*JCF: memory usage summary output*/
 723                                 case 'Y':
 724                                         ++sflag;
 725                                         break;
 726
 727                                 case 'j':
 728                                 case 'J':
 729                                         jflag = 1;
 730                                         break;
 731
 732                                 case 'u':
 733                                 case 'U':
 734                                         uflag = 1;
 735                                         break;
 736                                 case 'r':
 737                                 case 'R':
 738                                         rflag = 1;
 739                                         break;
 740                                 case 'x':
 741                                 case 'X':
 742                                         xflag = 0;
 743                                         break;
 744
 745                                 case 'q':
 746                                 case 'Q':
 747                                         xflag = 1;
 748                                         break;
 749
 750                                 case 'd':
 751                                 case 'D':
 752                                         xflag = 2;
 753                                         break;
 754
 755                                 case 'e':
 756                                 case 'E':
 757                                         return(1);
 758
 759                                 case 'n':
 760                                 case 'N':
 761                                         pflag = 0;
 762                                         break;
 763
 764                                 case 'p':
 765                                 case 'P':
 766                                         pflag = 1;
 767                                         break;
 768
 769                                 case 'b':
 770                                 case 'B':
 771                                         bassav();
 772                                         return(0);
 773
 774                                 case 'g':
 775                                 case 'G':
 776                                         gblsav();
 777                                         return(0);
 778
 779                                 case 'k':
 780                                 case 'K':
 781                                         addpath();
 782                                         return(0);
 783
 784                                 case 'l':
 785                                 case 'L':
 786                                         addlib();
 787                                         return(0);
 788
 789                                 case 'a':
 790                                 case 'A':
 791                                         iramsav();
 792                                         return(0);
 793
 794                                 case 'z':
 795                                 case 'Z':
 796                                         dflag = 1;
 797                                         return(0);
 798                                 default:
 799                                         fprintf(stderr, "Invalid option\n");
 800                                         lkexit(1);
 801                                 }
 802                         }
 803                 } else
 804                if (ctype[c] & ILL) {
 805                        fprintf(stderr, "Invalid input");
 806                        lkexit(1);
 807                } else {
 808                         if (linkp == NULL) {
 809                                 linkp = (struct lfile *)
 810                                         new (sizeof (struct lfile));
 811                                 lfp = linkp;
 812                         } else {
 813                                 lfp->f_flp = (struct lfile *)
 814                                                 new (sizeof (struct lfile));
 815                                 lfp = lfp->f_flp;
 816                         }
 817                         getfid(fid, c);
 818                         lfp->f_idp = (char *) new (strlen(fid)+1);
 819                         strcpy(lfp->f_idp, fid);
 820                         lfp->f_type = F_REL;
 821                 }
 822         }
 823         return(0);
 824 }
 825
 826 /*)Function     VOID    bassav()
 827  *
 828  *      The function bassav() creates a linked structure containing
 829  *      the base address strings input to the linker.
 830  *
 831  *      local variables:
 832  *              none
 833  *
 834  *      global variables:
 835  *              base    *basep          The pointer to the first
 836  *                                              base structure
 837  *              base    *bsp            Pointer to the current
 838  *                                              base structure
 839  *              char    *ip             pointer into the REL file
 840  *                                              text line in ib[]
 841  *
 842  *       functions called:
 843  *              char    getnb()         lklex.c
 844  *              VOID *  new()           lksym.c
 845  *              int     strlen()        c_library
 846  *              char *  strcpy()        c_library
 847  *              VOID    unget()         lklex.c
 848  *
 849  *      side effects:
 850  *              The basep structure is created.
 851  */
 852
 853 VOID
 854 bassav()
 855 {
 856         if (basep == NULL) {
 857                 basep = (struct base *)
 858                         new (sizeof (struct base));
 859                 bsp = basep;
 860         } else {
 861                 bsp->b_base = (struct base *)
 862                                 new (sizeof (struct base));
 863                 bsp = bsp->b_base;
 864         }
 865         unget(getnb());
 866         bsp->b_strp = (char *) new (strlen(ip)+1);
 867         strcpy(bsp->b_strp, ip);
 868 }
 869
 870 /*)Function     VOID    setbas()
 871  *
 872  *      The function setbas() scans the base address lines in hte
 873  *      basep structure, evaluates the arguments, and sets beginning
 874  *      address of the specified areas.
 875  *
 876  *      local variables:
 877  *              int     v               expression value
 878  *              char    id[]            base id string
 879  *
 880  *      global variables:
 881  *              area    *ap             Pointer to the current
 882  *                                              area structure
 883  *              area    *areap          The pointer to the first
 884  *                                              area structure of a linked list
 885  *              base    *basep          The pointer to the first
 886  *                                              base structure
 887  *              base    *bsp            Pointer to the current
 888  *                                              base structure
 889  *              char    *ip             pointer into the REL file
 890  *                                              text line in ib[]
 891  *              int     lkerr           error flag
 892  *
 893  *       functions called:
 894  *              Addr_T  expr()          lkeval.c
 895  *              int     fprintf()       c_library
 896  *              VOID    getid()         lklex.c
 897  *              char    getnb()         lklex.c
 898  *              int     symeq()         lksym.c
 899  *
 900  *      side effects:
 901  *              The base address of an area is set.
 902  */
 903
 904 VOID
 905 setbas()
 906 {
 907         register int v;
 908         char id[NCPS];
 909
 910         bsp = basep;
 911         while (bsp) {
 912                 ip = bsp->b_strp;
 913                 getid(id, -1);
 914                 if (getnb() == '=') {
 915                         v = expr(0);
 916                         for (ap = areap; ap != NULL; ap = ap->a_ap) {
 917                                 if (symeq(id, ap->a_id))
 918                                         break;
 919                         }
 920                         if (ap == NULL) {
 921                                 fprintf(stderr,
 922                                 "No definition of area %s\n", id);
 923                                 lkerr++;
 924                         } else {
 925                                 ap->a_addr = v;
 926                                 ap->a_type = 1; /* JLH: value set */
 927                         }
 928                 } else {
 929                         fprintf(stderr, "No '=' in base expression");
 930                         lkerr++;
 931                 }
 932                 bsp = bsp->b_base;
 933         }
 934 }
 935
 936 /*)Function     VOID    gblsav()
 937  *
 938  *      The function gblsav() creates a linked structure containing
 939  *      the global variable strings input to the linker.
 940  *
 941  *      local variable:
 942  *              none
 943  *
 944  *      global variables:
 945  *              globl   *globlp         The pointer to the first
 946  *                                              globl structure
 947  *              globl   *gsp            Pointer to the current
 948  *                                              globl structure
 949  *              char    *ip             pointer into the REL file
 950  *                                              text line in ib[]
 951  *              int     lkerr           error flag
 952  *
 953  *      functions called:
 954  *              char    getnb()         lklex.c
 955  *              VOID *  new()           lksym.c
 956  *              int     strlen()        c_library
 957  *              char *  strcpy()        c_library
 958  *              VOID    unget()         lklex.c
 959  *
 960  *      side effects:
 961  *              The globlp structure is created.
 962  */
 963
 964 VOID
 965 gblsav()
 966 {
 967         if (globlp == NULL) {
 968                 globlp = (struct globl *)
 969                         new (sizeof (struct globl));
 970                 gsp = globlp;
 971         } else {
 972                 gsp->g_globl = (struct globl *)
 973                                 new (sizeof (struct globl));
 974                 gsp = gsp->g_globl;
 975         }
 976         unget(getnb());
 977         gsp->g_strp = (char *) new (strlen(ip)+1);
 978         strcpy(gsp->g_strp, ip);
 979 }
 980
 981 /*)Function     VOID    setgbl()
 982  *
 983  *      The function setgbl() scans the global variable lines in hte
 984  *      globlp structure, evaluates the arguments, and sets a variable
 985  *      to this value.
 986  *
 987  *      local variables:
 988  *              int     v               expression value
 989  *              char    id[]            base id string
 990  *              sym *   sp              pointer to a symbol structure
 991  *
 992  *      global variables:
 993  *              char    *ip             pointer into the REL file
 994  *                                              text line in ib[]
 995  *              globl   *globlp         The pointer to the first
 996  *                                              globl structure
 997  *              globl   *gsp            Pointer to the current
 998  *                                              globl structure
 999  *              FILE *  stderr          c_library
1000  *              int     lkerr           error flag
1001  *
1002  *       functions called:
1003  *              Addr_T  expr()          lkeval.c
1004  *              int     fprintf()       c_library
1005  *              VOID    getid()         lklex.c
1006  *              char    getnb()         lklex.c
1007  *              sym *   lkpsym()        lksym.c
1008  *
1009  *      side effects:
1010  *              The value of a variable is set.
1011  */
1012
1013 VOID
1014 setgbl()
1015 {
1016         register int v;
1017         register struct sym *sp;
1018         char id[NCPS];
1019
1020         gsp = globlp;
1021         while (gsp) {
1022                 ip = gsp->g_strp;
1023                 getid(id, -1);
1024                 if (getnb() == '=') {
1025                         v = expr(0);
1026                         sp = lkpsym(id, 0);
1027                         if (sp == NULL) {
1028                                 fprintf(stderr,
1029                                 "No definition of symbol %s\n", id);
1030                                 lkerr++;
1031                         } else {
1032                                 if (sp->s_flag & S_DEF) {
1033                                         fprintf(stderr,
1034                                         "Redefinition of symbol %s\n", id);
1035                                         lkerr++;
1036                                         sp->s_axp = NULL;
1037                                 }
1038                                 sp->s_addr = v;
1039                                 sp->s_type |= S_DEF;
1040                         }
1041                 } else {
1042                         fprintf(stderr, "No '=' in global expression");
1043                         lkerr++;
1044                 }
1045                 gsp = gsp->g_globl;
1046         }
1047 }
1048
1049 /*)Function     FILE *  afile(fn,, ft, wf)
1050  *
1051  *              char *  fn              file specification string
1052  *              char *  ft              file type string
1053  *              int     wf              read(0)/write(1) flag
1054  *
1055  *      The function afile() opens a file for reading or writing.
1056  *              (1)     If the file type specification string ft
1057  *                      is not NULL then a file specification is
1058  *                      constructed with the file path\name in fn
1059  *                      and the extension in ft.
1060  *              (2)     If the file type specification string ft
1061  *                      is NULL then the file specification is
1062  *                      constructed from fn.  If fn does not have
1063  *                      a file type then the default .rel file
1064  *                      type is appended to the file specification.
1065  *
1066  *      afile() returns a file handle for the opened file or aborts
1067  *      the assembler on an open error.
1068  *
1069  *      local variables:
1070  *              int     c               character value
1071  *              char    fb[]            constructed file specification string
1072  *              FILE *  fp              filehandle for opened file
1073  *              char *  p1              pointer to filespec string fn
1074  *              char *  p2              pointer to filespec string fb
1075  *              char *  p3              pointer to filetype string ft
1076  *
1077  *      global variables:
1078  *              int     lkerr           error flag
1079  *
1080  *      functions called:
1081  *              FILE *  fopen()         c_library
1082  *              int     fprintf()       c_library
1083  *
1084  *      side effects:
1085  *              File is opened for read or write.
1086  */
1087
1088 FILE *
1089 afile(fn, ft, wf)
1090 char *fn;
1091 char *ft;
1092 {
1093         register char *p1, *p2, *p3;
1094         register int c;
1095         FILE *fp;
1096         char fb[PATH_MAX];
1097         char *omode = (wf ? (wf == 2 ? "a" : "w") : "r");
1098
1099         p1 = fn;
1100         p2 = fb;
1101         p3 = ft;
1102         while ((c = *p1++) != 0 && c != FSEPX) {
1103                 if (p2 < &fb[PATH_MAX-4])
1104                         *p2++ = c;
1105         }
1106         *p2++ = FSEPX;
1107         if (*p3 == 0) {
1108                 if (c == FSEPX) {
1109                         p3 = p1;
1110                 } else {
1111                         p3 = "rel";
1112                 }
1113         }
1114         while ((c = *p3++) != 0) {
1115                 if (p2 < &fb[PATH_MAX-1])
1116                         *p2++ = c;
1117         }
1118         *p2++ = 0;
1119         if ((fp = fopen(fb, omode)) == NULL) {
1120             if (strcmp(ft,"adb")) {
1121                 fprintf(stderr, "%s: cannot %s.\n", fb, wf?"create":"open");
1122                 lkerr++;
1123             }
1124         }
1125         return (fp);
1126 }
1127
1128 /*)Function     VOID    iramsav()
1129  *
1130  *      The function iramsav() stores the size of the chip's internal RAM.
1131  *      This is used after linking to check that variable assignment to this
1132  *      dataspace didn't overflow into adjoining segments.  Variables in the
1133  *      DSEG, OSEG, and ISEG are assigned to this dataspace.
1134  *
1135  *      local variables:
1136  *              none
1137  *
1138  *      global variables:
1139  *              char    *ip             pointer into the REL file
1140  *                                              text line in ib[]
1141  *              unsigned int            size of chip's internal
1142  *                      iram_size               RAM segment
1143  *
1144  *       functions called:
1145  *              char    getnb()         lklex.c
1146  *              VOID    unget()         lklex.c
1147  *              Addr_T  expr()          lkeval.c
1148  *
1149  *      side effects:
1150  *              The iram_size may be modified.
1151  */
1152
1153 VOID
1154 iramsav()
1155 {
1156   unget(getnb());
1157   if (ip && *ip)
1158     //iram_size = atoi(ip);
1159     iram_size = expr(0);        /* evaluate size expression */
1160   else
1161     iram_size = 128;            /* Default is 128 (0x80) bytes */
1162 }
1163
1164 /*)Function     VOID    iramcheck()
1165  *
1166  *      The function iramcheck() is used at the end of linking to check that
1167  *      the internal RAM area wasn't overflowed by too many variable
1168  *      assignments.  Variables in the DSEG, ISEG, and OSEG are assigned to
1169  *      the chip's internal RAM.
1170  *
1171  *      local variables:
1172  *              none
1173  *
1174  *      global variables:
1175  *              unsigned int            size of chip's internal
1176  *                      iram_size               RAM segment
1177  *              struct area             linked list of memory
1178  *                      *areap                  areas
1179  *
1180  *       functions called:
1181  *
1182  *      side effects:
1183  */
1184
1185 VOID
1186 iramcheck()
1187 {
1188   register unsigned int last_addr;
1189   register struct area *ap;
1190
1191   for (ap = areap; ap; ap=ap->a_ap) {
1192     if ((ap->a_size != 0) &&
1193         (!strcmp(ap->a_id, "DSEG") ||
1194          !strcmp(ap->a_id, "OSEG") ||
1195          !strcmp(ap->a_id, "ISEG")
1196         )
1197        )
1198     {
1199       last_addr = ap->a_addr + ap->a_size - 1;
1200       if (last_addr >= iram_size)
1201         fprintf(stderr,
1202                 "\nWARNING! Segment %s extends past the end\n"
1203                 "         of internal RAM.  Check map file.\n",
1204                 ap->a_id);
1205     }
1206   }
1207 }
1208
1209 char *usetxt[] = {
1210         "Startup:",
1211         "  -c   Command line input",
1212         "  -f   file[LNK] File input",
1213         "  -p   Prompt and echo of file[LNK] to stdout (default)",
1214         "  -n   No echo of file[LNK] to stdout",
1215 /*      "Usage: [-Options] file [file ...]", */
1216         "Libraries:",
1217         "  -k   Library path specification, one per -k",
1218         "  -l   Library file specification, one per -l",
1219         "Relocation:",
1220         "  -b   area base address = expression",
1221         "  -g   global symbol = expression",
1222         "Map format:",
1223         "  -m   Map output generated as file[MAP]",
1224         "  -x   Hexadecimal (default),  -d  Decimal,  -q  Octal",
1225         "Output:",
1226         "  -i   Intel Hex as file[IHX]",
1227         "  -s   Motorola S19 as file[S19]",
1228         "  -j   Produce NoICE debug as file[NOI]",
1229         "  -z   Produce SDCdb debug as file[cdb]",
1230 /*      "List:", */
1231         "  -u   Update listing file(s) with link data as file(s)[.RST]",
1232         "Miscellaneous:\n"
1233         "  -a   [iram-size] Check for internal RAM overflow",
1234         "End:",
1235         "  -e   or null line terminates input",
1236         0
1237 };
1238
1239 /*)Function     VOID    usage()
1240  *
1241  *      The function usage() outputs to the stderr device the
1242  *      assembler name and version and a list of valid assembler options.
1243  *
1244  *      local variables:
1245  *              char ** dp              pointer to an array of
1246  *                                      text string pointers.
1247  *
1248  *      global variables:
1249  *              FILE *  stderr          c_library
1250  *
1251  *      functions called:
1252  *              int     fprintf()       c_library
1253  *
1254  *      side effects:
1255  *              none
1256  */
1257
1258 VOID
1259 usage()
1260 {
1261         register char   **dp;
1262
1263         fprintf(stderr, "\nASxxxx Linker %s\n\n", VERSION);
1264         for (dp = usetxt; *dp; dp++)
1265                 fprintf(stderr, "%s\n", *dp);
1266         lkexit(1);
1267 }
1268
1269 /*)Function     VOID    copyfile()
1270  *
1271  *              FILE    *dest           destination file
1272  *              FILE    *src            source file
1273  *
1274  *      function will copy source file to destination file
1275  *
1276  *
1277  *      functions called:
1278  *              int     fgetc()         c_library
1279  *              int     fputc()         c_library
1280  *
1281  *      side effects:
1282  *              none
1283  */
1284 VOID copyfile (dest,src)
1285 FILE *src,*dest ;
1286 {
1287     int ch;
1288     while ((ch = fgetc(src)) != EOF) {
1289
1290         fputc(ch,dest);
1291     }
1292 }