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   1 /* lkmain.c */
   2
   3 /*
   4  * (C) Copyright 1989-1995
   5  * All Rights Reserved
   6  *
   7  * Alan R. Baldwin
   8  * 721 Berkeley St.
   9  * Kent, Ohio  44240
  10  *
  11  * 31-Oct-97 JLH:
  12  *           - add jflag and jfp to control NoICE output file genration
  13  *  3-Nov-97 JLH:
  14  *           - use a_type == 0 as "virgin area" flag: set == 1 if -b
  15  */
  16
  17 #include <stdlib.h>
  18 #include <stdio.h>
  19 #include <string.h>
  20 #include "aslink.h"
  21
  22 #ifdef WIN32T
  23 #include <time.h>
  24
  25 void Timer(int action, char * message)
  26 {
  27         static double start, end, total=0.0;
  28     static const double secs_per_tick = 1.0 / CLOCKS_PER_SEC;
  29
  30     if(action==0) start=clock()*secs_per_tick;
  31     else if(action==1)
  32     {
  33         end=clock() * secs_per_tick;
  34                 printf("%s \t%f seconds.\n", message, (end-start));
  35                 total+=end-start;
  36     }
  37     else
  38     {
  39                 printf("Total time: \t%f seconds.\n", total);
  40                 total=0.0;
  41     }
  42 }
  43 #endif
  44
  45 /* yuck - but including unistd.h causes problems on Cygwin by redefining
  46  * Addr_T.
  47  */
  48 extern int unlink(const char *);
  49
  50 /*)Module       lkmain.c
  51  *
  52  *      The module lkmain.c contains the functions which
  53  *      (1) input the linker options, parameters, and specifications
  54  *      (2) perform a two pass link
  55  *      (3) produce the appropriate linked data output and/or
  56  *          link map file and/or relocated listing files.
  57  *
  58  *      lkmain.c contains the following functions:
  59  *              FILE *  afile(fn,ft,wf)
  60  *              VOID    bassav()
  61  *              VOID    gblsav()
  62   *             VOID    link_main()
  63  *              VOID    lkexit()
  64  *              VOID    main(argc,argv)
  65  *              VOID    map()
  66  *              int     parse()
  67  *              VOID    setbas()
  68  *              VOID    setgbl()
  69  *              VOID    usage()
  70  *
  71  *      lkmain.c contains the following local variables:
  72  *              char *  usetext[]       array of pointers to the
  73  *                                      command option tect lines
  74  *
  75  */
  76
  77 /*JCF:  Creates some of the default areas so they are allocated in the right order.*/
  78 void Areas51 (void)
  79 {
  80         char * rel[]={
  81                 "XH",
  82                 "H 7 areas 0 global symbols",
  83                 "A _CODE size 0 flags 0",               /*Each .rel has one, so...*/
  84                 "A REG_BANK_0 size 0 flags 4",  /*Register banks are overlayable*/
  85                 "A REG_BANK_1 size 0 flags 4",
  86                 "A REG_BANK_2 size 0 flags 4",
  87                 "A REG_BANK_3 size 0 flags 4",
  88                 "A BSEG size 0 flags 80",               /*BSEG must be just before BITS*/
  89                 "A BSEG_BYTES size 0 flags 0",  /*Size will be obtained from BSEG in lnkarea()*/
  90                 ""
  91         };
  92         int j;
  93
  94         for (j=0; rel[j][0]!=0; j++)
  95         {
  96                 ip=rel[j];
  97                 link_main();
  98         }
  99
 100         /*Set the start address of the default areas:*/
 101         for(ap=areap; ap; ap=ap->a_ap)
 102         {
 103                 /**/ if (!strcmp(ap->a_id, "REG_BANK_0")) { ap->a_addr=0x00; ap->a_type=1; }
 104                 else if (!strcmp(ap->a_id, "REG_BANK_1")) { ap->a_addr=0x08; ap->a_type=1; }
 105                 else if (!strcmp(ap->a_id, "REG_BANK_2")) { ap->a_addr=0x10; ap->a_type=1; }
 106                 else if (!strcmp(ap->a_id, "REG_BANK_3")) { ap->a_addr=0x18; ap->a_type=1; }
 107                 else if (!strcmp(ap->a_id, "BSEG_BYTES")) { ap->a_addr=0x20; ap->a_type=1; }
 108         }
 109 }
 110
 111 /*)Function     VOID    main(argc,argv)
 112  *
 113  *              int     argc            number of command line arguments + 1
 114  *              char *  argv[]          array of pointers to the command line
 115  *                                      arguments
 116  *
 117  *      The function main() evaluates the command line arguments to
 118  *      determine if the linker parameters are to input through 'stdin'
 119  *      or read from a command file.  The functiond getline() and parse()
 120  *      are to input and evaluate the linker parameters.  The linking process
 121  *      proceeds by making the first pass through each .rel file in the order
 122  *      presented to the linker.  At the end of the first pass the setbase(),
 123  *      lnkarea(), setgbl(), and symdef() functions are called to evaluate
 124  *      the base address terms, link all areas, define global variables,
 125  *      and look for undefined symbols.  Following these routines a linker
 126  *      map file may be produced and the linker output files may be opened.
 127  *      The second pass through the .rel files will output the linked data
 128  *      in one of the four supported formats.
 129  *
 130  *      local variables:
 131  *              char *  p               pointer to an argument string
 132  *              int     c               character from argument string
 133  *              int     i               loop counter
 134  *
 135  *      global variables:
 136  *                                              text line in ib[]
 137  *              lfile   *cfp            The pointer *cfp points to the
 138  *                                              current lfile structure
 139  *              char    ctype[]         array of character types, one per
 140  *                                              ASCII character
 141  *              lfile   *filep                  The pointer *filep points to the
 142  *                                              beginning of a linked list of
 143  *                                              lfile structures.
 144  *              head    *hp             Pointer to the current
 145  *                                              head structure
 146  *              char    ib[NINPUT]      .rel file text line
 147  *              char    *ip             pointer into the .rel file
 148  *              lfile   *linkp          pointer to first lfile structure
 149  *                                              containing an input .rel file
 150  *                                              specification
 151  *              int     lkerr           error flag
 152  *              int     mflag           Map output flag
 153  *              int     oflag           Output file type flag
 154  *              FILE    *ofp            Output file handle
 155  *                                              for word formats
 156  *              FILE    *ofph           Output file handle
 157  *                                              for high byte format
 158  *              FILE    *ofpl           Output file handle
 159  *                                              for low byte format
 160  *              int     pass            linker pass number
 161  *              int     pflag           print linker command file flag
 162  *              int     radix           current number conversion radix
 163  *              FILE    *sfp            The file handle sfp points to the
 164  *                                              currently open file
 165  *              lfile   *startp         asmlnk startup file structure
 166  *              FILE *  stdin           c_library
 167  *              FILE *  stdout          c_library
 168  *
 169  *      functions called:
 170  *              FILE *  afile()         lkmain.c
 171  *              int     fclose()        c_library
 172  *              int     fprintf()       c_library
 173  *              int     getline()       lklex.c
 174  *              VOID    library()       lklibr.c
 175  *              VOID    link_main()     lkmain.c
 176  *              VOID    lkexit()        lkmain.c
 177  *              VOID    lnkarea()       lkarea.c
 178  *              VOID    map()           lkmain.c
 179  *              VOID    new()           lksym.c
 180  *              int     parse()         lkmain.c
 181  *              VOID    reloc()         lkreloc.c
 182  *              VOID    search()        lklibr.c
 183  *              VOID    setbas()        lkmain.c
 184  *              VOID    setgbl()        lkmain.c
 185  *              VOID    symdef()        lksym.c
 186  *              VOID    usage()         lkmain.c
 187  *
 188  *      side effects:
 189  *              Completion of main() completes the linking process
 190  *              and may produce a map file (.map) and/or a linked
 191  *              data files (.ihx or .s19) and/or one or more
 192  *              relocated listing files (.rst).
 193  */
 194
 195 int
 196 main(argc, argv)
 197 char *argv[];
 198 {
 199         register char *p;
 200         register int c, i;
 201
 202 #ifdef WIN32T
 203     Timer(0, "");
 204 #endif
 205
 206         startp = (struct lfile *) new (sizeof (struct lfile));
 207
 208         pflag = 1;
 209         for (i=1; i<argc; ++i) {
 210                 p = argv[i];
 211                 if (*p == '-') {
 212                         while (ctype[c = *(++p)] & LETTER) {
 213                                 switch(c) {
 214
 215                                 case 'c':
 216                                 case 'C':
 217                                         startp->f_type = F_STD;
 218                                         break;
 219
 220                                 case 'f':
 221                                 case 'F':
 222                                         startp->f_type = F_LNK;
 223                                         break;
 224
 225                                 case 'n':
 226                                 case 'N':
 227                                         pflag = 0;
 228                                         break;
 229
 230                                 case 'p':
 231                                 case 'P':
 232                                         pflag = 1;
 233                                         break;
 234
 235                                 default:
 236                                         usage();
 237                                 }
 238                         }
 239                 } else {
 240                         if (startp->f_type == F_LNK) {
 241                                 startp->f_idp = p;
 242                         }
 243                 }
 244         }
 245        if (startp->f_type == 0)
 246                 usage();
 247         if (startp->f_type == F_LNK && startp->f_idp == NULL)
 248                 usage();
 249
 250         cfp = NULL;
 251         sfp = NULL;
 252         filep = startp;
 253         while (1) {
 254                 ip = ib;
 255                 if (getline() == 0)
 256                         break;
 257                 if (pflag && sfp != stdin)
 258                         fprintf(stdout, "%s\n", ip);
 259                if (*ip == '\0' || parse())
 260                         break;
 261         }
 262
 263         if (sfp) {
 264             fclose(sfp);
 265             sfp = NULL;
 266         }
 267
 268         if (linkp == NULL)
 269                 usage();
 270
 271         syminit();
 272
 273         if (dflag){
 274             //dfp = afile("temp", "cdb", 1);
 275                 SaveLinkedFilePath(linkp->f_idp); //Must be the first one...
 276                 dfp = afile(linkp->f_idp,"cdb",1); //JCF: Nov 30, 2002
 277             if (dfp == NULL)
 278                 lkexit(1);
 279         }
 280
 281         for (pass=0; pass<2; ++pass) {
 282                 cfp = NULL;
 283                 sfp = NULL;
 284                 filep = linkp;
 285                 hp = NULL;
 286                 radix = 10;
 287
 288                 Areas51(); /*JCF: Create the default 8051 areas in the right order*/
 289
 290                 while (getline()) {
 291                         ip = ib;
 292
 293                         /* pass any "magic comments" to NoICE output */
 294                         if ((ip[0] == ';') && (ip[1] == '!') && jfp) {
 295                                 fprintf( jfp, "%s\n", &ip[2] );
 296                         }
 297                         link_main();
 298                 }
 299                 if (pass == 0) {
 300                         /*
 301                          * Search libraries for global symbols
 302                          */
 303                         search();
 304                         /*
 305                          * Set area base addresses.
 306                          */
 307                         setbas();
 308                         /*
 309                          * Link all area addresses.
 310                          */
 311                         lnkarea();
 312                         /*
 313                          * Process global definitions.
 314                          */
 315                         setgbl();
 316                         /*
 317                          * Check for undefined globals.
 318                          */
 319                         symdef(stderr);
 320
 321                         /* Open NoICE output file if requested */
 322                         if (jflag) {
 323                                 jfp = afile(linkp->f_idp, "NOI", 1);
 324                                 if (jfp == NULL) {
 325                                         lkexit(1);
 326                                 }
 327                         }
 328
 329                         /*
 330                          * Output Link Map if requested,
 331                          * or if NoICE output requested (since NoICE
 332                          * file is generated in part by map() processing)
 333                          */
 334                         if (mflag || jflag)
 335                                 map();
 336
 337                         if (sflag) /*JCF: memory usage summary output*/
 338                                 if(summary(areap))lkexit(1);
 339
 340                         if (iram_size)
 341                                 iramcheck();
 342
 343                         /*
 344                          * Open output file
 345                          */
 346                         if (oflag == 1) {
 347                                 ofp = afile(linkp->f_idp, "ihx", 1);
 348                                 if (ofp == NULL) {
 349                                         lkexit(1);
 350                                 }
 351                                 /* include NoICE command to load hex file */
 352                                 if (jfp) fprintf( jfp, "LOAD %s.IHX\n", linkp->f_idp );
 353
 354                         } else
 355                         if (oflag == 2) {
 356                                 ofp = afile(linkp->f_idp, "S19", 1);
 357                                 if (ofp == NULL) {
 358                                         lkexit(1);
 359                                 }
 360                                 /* include NoICE command to load hex file */
 361                                 if (jfp) fprintf( jfp, "LOAD %s.S19\n", linkp->f_idp );
 362                         } else
 363                         if (oflag == 3) {
 364                                 ofp = afile(linkp->f_idp, "elf", 4);
 365                                 if (ofp == NULL) {
 366                                         lkexit(1);
 367                                 }
 368                         }
 369                 } else {
 370                         /*
 371                          * Link in library files
 372                          */
 373                         library();
 374                         reloc('E');
 375                 }
 376         }
 377         //JCF:
 378         CreateAOMF51();
 379
 380 #ifdef WIN32T
 381     Timer(1, "Linker execution time");
 382 #endif
 383
 384         lkexit(lkerr);
 385         return 0;
 386 }
 387
 388 /*)Function     VOID    lkexit(i)
 389  *
 390  *                      int     i       exit code
 391  *
 392  *      The function lkexit() explicitly closes all open
 393  *      files and then terminates the program.
 394  *
 395  *      local variables:
 396  *              none
 397  *
 398  *      global variables:
 399  *              FILE *  mfp             file handle for .map
 400  *              FILE *  ofp             file handle for .ihx/.s19
 401  *              FILE *  rfp             file hanlde for .rst
 402  *              FILE *  sfp             file handle for .rel
 403  *              FILE *  tfp             file handle for .lst
 404  *
 405  *      functions called:
 406  *              int     fclose()        c_library
 407  *              VOID    exit()          c_library
 408  *
 409  *      side effects:
 410  *              All files closed. Program terminates.
 411  */
 412
 413 VOID
 414 lkexit(i)
 415 int i;
 416 {
 417         if (mfp != NULL) fclose(mfp);
 418         if (jfp != NULL) fclose(jfp);
 419         if (ofp != NULL) fclose(ofp);
 420         if (rfp != NULL) fclose(rfp);
 421         if (sfp != NULL) fclose(sfp);
 422         if (tfp != NULL) fclose(tfp);
 423         if (dfp != NULL) fclose(dfp);
 424         /*if (dfp != NULL)
 425             FILE *xfp = afile(linkp->f_idp,"cdb",1);
 426             dfp = freopen("temp.cdb","r",dfp);
 427             copyfile(xfp,dfp);
 428             fclose(xfp);
 429             fclose(dfp);
 430             unlink("temp.cdb");
 431         }*/
 432         exit(i);
 433 }
 434
 435 /*)Function     link_main()
 436  *
 437  *      The function link_main() evaluates the directives for each line of
 438  *      text read from the .rel file(s).  The valid directives processed
 439  *      are:
 440  *              X, D, Q, H, M, A, S, T, R, and P.
 441  *
 442  *      local variables:
 443  *              int     c               first non blank character of a line
 444  *
 445  *      global variables:
 446  *              head    *headp          The pointer to the first
 447  *                                              head structure of a linked list
 448  *              head    *hp             Pointer to the current
 449  *                                              head structure
 450  *              int     pass            linker pass number
 451  *              int     radix           current number conversion radix
 452  *
 453  *      functions called:
 454  *              char    endline()       lklex.c
 455  *              VOID    module()        lkhead.c
 456  *              VOID    newarea()       lkarea.c
 457  *              VOID    newhead()       lkhead.c
 458  *              sym *   newsym()        lksym.c
 459  *              VOID    reloc()         lkreloc.c
 460  *
 461  *      side effects:
 462  *              Head, area, and symbol structures are created and
 463  *              the radix is set as the .rel file(s) are read.
 464  */
 465
 466 VOID
 467 link_main()
 468 {
 469         register int c;
 470
 471         if ((c=endline()) == 0) { return; }
 472         switch (c) {
 473
 474     case 'O': /*For some important sdcc options*/
 475         if (pass == 0)
 476         {
 477             if(strlen(sdccopt)==0)
 478             {
 479                 strcpy(sdccopt, &ip[1]);
 480                 strcpy(sdccopt_module, curr_module);
 481             }
 482             else
 483             {
 484                 if(strcmp(sdccopt, &ip[1])!=0)
 485                 {
 486                                     fprintf(stderr,
 487                                     "?ASlink-Warning-Conflicting sdcc options:\n"
 488                     "   \"%s\" in module \"%s\" and\n"
 489                     "   \"%s\" in module \"%s\".\n",
 490                     sdccopt, sdccopt_module, &ip[1], curr_module);
 491                                     lkerr++;
 492                 }
 493             }
 494         }
 495                 break;
 496
 497         case 'X':
 498                 radix = 16;
 499                 break;
 500
 501         case 'D':
 502                 radix = 10;
 503                 break;
 504
 505         case 'Q':
 506                 radix = 8;
 507                 break;
 508
 509         case 'H':
 510                 if (pass == 0) {
 511                         newhead();
 512                 } else {
 513                         if (hp == 0) {
 514                                 hp = headp;
 515                         } else {
 516                                 hp = hp->h_hp;
 517                         }
 518                 }
 519                 sdp.s_area = NULL;
 520                 sdp.s_areax = NULL;
 521                 sdp.s_addr = 0;
 522                 break;
 523
 524         case 'M':
 525                 if (pass == 0)
 526         {
 527             strcpy(curr_module, &ip[1]);
 528                         module();
 529         }
 530                 break;
 531
 532         case 'A':
 533                 if (pass == 0)
 534                         newarea();
 535                 if (sdp.s_area == NULL) {
 536                         sdp.s_area = areap;
 537                         sdp.s_areax = areap->a_axp;
 538                         sdp.s_addr = 0;
 539                 }
 540                 break;
 541
 542         case 'S':
 543                 if (pass == 0)
 544                         newsym();
 545                 break;
 546
 547         case 'T':
 548         case 'R':
 549         case 'P':
 550                 if (pass == 0)
 551                         break;
 552                 reloc(c);
 553                 break;
 554
 555         default:
 556                 break;
 557         }
 558         if (c == 'X' || c == 'D' || c == 'Q') {
 559                 if ((c = get()) == 'H') {
 560                         hilo = 1;
 561                 } else
 562                 if (c == 'L') {
 563                         hilo = 0;
 564                 }
 565         }
 566 }
 567
 568
 569 /*)Function     VOID    map()
 570  *
 571  *      The function map() opens the output map file and calls the various
 572  *      routines to
 573  *      (1) output the variables in each area,
 574  *      (2) list the files processed with module names,
 575  *      (3) list the libraries file processed,
 576  *      (4) list base address definitions,
 577  *      (5) list global variable definitions, and
 578  *      (6) list any undefined variables.
 579  *
 580  *      local variables:
 581  *              int             i               counter
 582  *              head *  hdp             pointer to head structure
 583  *              lbfile *lbfh            pointer to library file structure
 584  *
 585  *      global variables:
 586  *              area    *ap             Pointer to the current
 587  *                                              area structure
 588  *              area    *areap          The pointer to the first
 589  *                                              area structure of a linked list
 590  *              base    *basep          The pointer to the first
 591  *                                              base structure
 592  *              base    *bsp            Pointer to the current
 593  *                                              base structure
 594  *              lfile   *filep                  The pointer *filep points to the
 595  *                                              beginning of a linked list of
 596  *                                              lfile structures.
 597  *              globl   *globlp         The pointer to the first
 598  *                                              globl structure
 599  *              globl   *gsp            Pointer to the current
 600  *                                              globl structure
 601  *              head    *headp          The pointer to the first
 602  *                                              head structure of a linked list
 603  *              lbfile  *lbfhead        The pointer to the first
 604  *                                      lbfile structure of a linked list
 605  *              lfile   *linkp          pointer to first lfile structure
 606  *                                              containing an input REL file
 607  *                                              specification
 608  *              int     lop             current line number on page
 609  *              FILE    *mfp            Map output file handle
 610  *              int     page            current page number
 611  *
 612  *      functions called:
 613  *              FILE *  afile()         lkmain.c
 614  *              int     fprintf()       c_library
 615  *              VOID    lkexit()        lkmain.c
 616  *              VOID    lstarea()       lklist.c
 617  *              VOID    newpag()        lklist.c
 618  *              VOID    symdef()        lksym.c
 619  *
 620  *      side effects:
 621  *              The map file is created.
 622  */
 623
 624 VOID
 625 map()
 626 {
 627         register int i;
 628         register struct head *hdp;
 629         register struct lbfile *lbfh;
 630
 631         /*
 632          * Open Map File
 633          */
 634         mfp = afile(linkp->f_idp, "map", 1);
 635         if (mfp == NULL) {
 636                 lkexit(1);
 637         }
 638
 639         /*
 640          * Output Map Area Lists
 641          */
 642         page = 0;
 643         lop  = NLPP;
 644         ap = areap;
 645         while (ap) {
 646                 lstarea(ap);
 647                 ap = ap->a_ap;
 648         }
 649         /*
 650          * List Linked Files
 651          */
 652         newpag(mfp);
 653         fprintf(mfp, "\nFiles Linked      [ module(s) ]\n\n");
 654         hdp = headp;
 655         filep = linkp;
 656         while (filep) {
 657                 fprintf(mfp, "%-16s", filep->f_idp);
 658                 i = 0;
 659                 while ((hdp != NULL) && (hdp->h_lfile == filep)) {
 660                         if (i % 5) {
 661                             fprintf(mfp, ", %8.8s", hdp->m_id);
 662                         } else {
 663                             if (i) {
 664                                 fprintf(mfp, ",\n%20s%8.8s", "", hdp->m_id);
 665                             } else {
 666                                 fprintf(mfp, "  [ %8.8s", hdp->m_id);
 667                             }
 668                         }
 669                         hdp = hdp->h_hp;
 670                         i++;
 671                 }
 672                 if (i)
 673                         fprintf(mfp, " ]");
 674                 fprintf(mfp, "\n");
 675                 filep = filep->f_flp;
 676         }
 677         /*
 678          * List Linked Libraries
 679          */
 680         if (lbfhead != NULL) {
 681                 fprintf(mfp,
 682         "\nLibraries Linked                    [   object  file   ]\n\n");
 683                 for (lbfh=lbfhead; lbfh; lbfh=lbfh->next) {
 684                         fprintf(mfp, "%-32s    [ %16.16s ]\n",
 685                                 lbfh->libspc, lbfh->relfil);
 686                 }
 687                 fprintf(mfp, "\n");
 688         }
 689         /*
 690          * List Base Address Definitions
 691          */
 692         if (basep) {
 693                 newpag(mfp);
 694                 fprintf(mfp, "\nUser Base Address Definitions\n\n");
 695                 bsp = basep;
 696                 while (bsp) {
 697                         fprintf(mfp, "%s\n", bsp->b_strp);
 698                         bsp = bsp->b_base;
 699                 }
 700         }
 701         /*
 702          * List Global Definitions
 703          */
 704         if (globlp) {
 705                 newpag(mfp);
 706                 fprintf(mfp, "\nUser Global Definitions\n\n");
 707                 gsp = globlp;
 708                 while (gsp) {
 709                         fprintf(mfp, "%s\n", gsp->g_strp);
 710                         gsp = gsp->g_globl;
 711                 }
 712         }
 713         fprintf(mfp, "\n\f");
 714         symdef(mfp);
 715 }
 716
 717 /*)Function     int     parse()
 718  *
 719  *      The function parse() evaluates all command line or file input
 720  *      linker directives and updates the appropriate variables.
 721  *
 722  *      local variables:
 723  *              int     c               character value
 724  *              char    fid[]           file id string
 725  *
 726  *      global variables:
 727  *              char    ctype[]         array of character types, one per
 728  *                                              ASCII character
 729  *              lfile   *lfp            pointer to current lfile structure
 730  *                                              being processed by parse()
 731  *              lfile   *linkp          pointer to first lfile structure
 732  *                                              containing an input REL file
 733  *                                              specification
 734  *              int     mflag           Map output flag
 735  *              int     oflag           Output file type flag
 736  *              int     pflag           print linker command file flag
 737  *              FILE *  stderr          c_library
 738  *              int     uflag           Relocated listing flag
 739  *              int     xflag           Map file radix type flag
 740  *
 741  *      Functions called:
 742  *              VOID    addlib()        lklibr.c
 743  *              VOID    addpath()       lklibr.c
 744  *              VOID    bassav()        lkmain.c
 745  *              int     fprintf()       c_library
 746  *              VOID    gblsav()        lkmain.c
 747  *              VOID    getfid()        lklex.c
 748  *              char    getnb()         lklex.c
 749  *              VOID    lkexit()        lkmain.c
 750  *              char *  strcpy()        c_library
 751  *              int     strlen()        c_library
 752  *
 753  *      side effects:
 754  *              Various linker flags are updated and the linked
 755  *              structure lfile is created.
 756  */
 757
 758 int
 759 parse()
 760 {
 761         register int c;
 762         char fid[NINPUT];
 763
 764         while ((c = getnb()) != 0) {
 765                 if ( c == '-') {
 766                         while (ctype[c=get()] & LETTER) {
 767                                 switch(c) {
 768
 769                                 case 'i':
 770                                 case 'I':
 771                                         oflag = 1;
 772                                         break;
 773
 774                                 case 's':
 775                                 case 'S':
 776                                         oflag = 2;
 777                                         break;
 778
 779                                 case 't':
 780                                 case 'T':
 781                                         oflag = 3;
 782                                         break;
 783
 784                                 case 'm':
 785                                 case 'M':
 786                                         ++mflag;
 787                                         break;
 788
 789                                 case 'y': /*JCF: memory usage summary output*/
 790                                 case 'Y':
 791                                         ++sflag;
 792                                         break;
 793
 794                                 case 'j':
 795                                 case 'J':
 796                                         jflag = 1;
 797                                         break;
 798
 799                                 case 'u':
 800                                 case 'U':
 801                                         uflag = 1;
 802                                         break;
 803                                 case 'r':
 804                                 case 'R':
 805                                         rflag = 1;
 806                                         break;
 807                                 case 'x':
 808                                 case 'X':
 809                                         xflag = 0;
 810                                         break;
 811
 812                                 case 'q':
 813                                 case 'Q':
 814                                         xflag = 1;
 815                                         break;
 816
 817                                 case 'd':
 818                                 case 'D':
 819                                         xflag = 2;
 820                                         break;
 821
 822                                 case 'e':
 823                                 case 'E':
 824                                         return(1);
 825
 826                                 case 'n':
 827                                 case 'N':
 828                                         pflag = 0;
 829                                         break;
 830
 831                                 case 'p':
 832                                 case 'P':
 833                                         pflag = 1;
 834                                         break;
 835
 836                                 case 'b':
 837                                 case 'B':
 838                                         bassav();
 839                                         return(0);
 840
 841                                 case 'g':
 842                                 case 'G':
 843                                         gblsav();
 844                                         return(0);
 845
 846                                 case 'k':
 847                                 case 'K':
 848                                         addpath();
 849                                         return(0);
 850
 851                                 case 'l':
 852                                 case 'L':
 853                                         addlib();
 854                                         return(0);
 855
 856                                 case 'a':
 857                                 case 'A':
 858                                         iramsav();
 859                                         return(0);
 860
 861                                 case 'v':
 862                                 case 'V':
 863                                         xramsav();
 864                                         return(0);
 865
 866                                 case 'w':
 867                                 case 'W':
 868                                         codesav();
 869                                         return(0);
 870
 871                                 case 'z':
 872                                 case 'Z':
 873                                         dflag = 1;
 874                                         return(0);
 875                                 default:
 876                                         fprintf(stderr, "Invalid option\n");
 877                                         lkexit(1);
 878                                 }
 879                         }
 880                 } else
 881                if (ctype[c] & ILL) {
 882                        fprintf(stderr, "Invalid input");
 883                        lkexit(1);
 884                } else {
 885                         if (linkp == NULL) {
 886                                 linkp = (struct lfile *)
 887                                         new (sizeof (struct lfile));
 888                                 lfp = linkp;
 889                         } else {
 890                                 lfp->f_flp = (struct lfile *)
 891                                                 new (sizeof (struct lfile));
 892                                 lfp = lfp->f_flp;
 893                         }
 894                         getfid(fid, c);
 895                         lfp->f_idp = (char *) new (strlen(fid)+1);
 896                         strcpy(lfp->f_idp, fid);
 897                         lfp->f_type = F_REL;
 898                 }
 899         }
 900         return(0);
 901 }
 902
 903 /*)Function     VOID    bassav()
 904  *
 905  *      The function bassav() creates a linked structure containing
 906  *      the base address strings input to the linker.
 907  *
 908  *      local variables:
 909  *              none
 910  *
 911  *      global variables:
 912  *              base    *basep          The pointer to the first
 913  *                                              base structure
 914  *              base    *bsp            Pointer to the current
 915  *                                              base structure
 916  *              char    *ip             pointer into the REL file
 917  *                                              text line in ib[]
 918  *
 919  *       functions called:
 920  *              char    getnb()         lklex.c
 921  *              VOID *  new()           lksym.c
 922  *              int     strlen()        c_library
 923  *              char *  strcpy()        c_library
 924  *              VOID    unget()         lklex.c
 925  *
 926  *      side effects:
 927  *              The basep structure is created.
 928  */
 929
 930 VOID
 931 bassav()
 932 {
 933         if (basep == NULL) {
 934                 basep = (struct base *)
 935                         new (sizeof (struct base));
 936                 bsp = basep;
 937         } else {
 938                 bsp->b_base = (struct base *)
 939                                 new (sizeof (struct base));
 940                 bsp = bsp->b_base;
 941         }
 942         unget(getnb());
 943         bsp->b_strp = (char *) new (strlen(ip)+1);
 944         strcpy(bsp->b_strp, ip);
 945 }
 946
 947 /*)Function     VOID    setbas()
 948  *
 949  *      The function setbas() scans the base address lines in hte
 950  *      basep structure, evaluates the arguments, and sets beginning
 951  *      address of the specified areas.
 952  *
 953  *      local variables:
 954  *              int     v               expression value
 955  *              char    id[]            base id string
 956  *
 957  *      global variables:
 958  *              area    *ap             Pointer to the current
 959  *                                              area structure
 960  *              area    *areap          The pointer to the first
 961  *                                              area structure of a linked list
 962  *              base    *basep          The pointer to the first
 963  *                                              base structure
 964  *              base    *bsp            Pointer to the current
 965  *                                              base structure
 966  *              char    *ip             pointer into the REL file
 967  *                                              text line in ib[]
 968  *              int     lkerr           error flag
 969  *
 970  *       functions called:
 971  *              Addr_T  expr()          lkeval.c
 972  *              int     fprintf()       c_library
 973  *              VOID    getid()         lklex.c
 974  *              char    getnb()         lklex.c
 975  *              int     symeq()         lksym.c
 976  *
 977  *      side effects:
 978  *              The base address of an area is set.
 979  */
 980
 981 VOID
 982 setbas()
 983 {
 984         register int v;
 985         char id[NCPS];
 986
 987         bsp = basep;
 988         while (bsp) {
 989                 ip = bsp->b_strp;
 990                 getid(id, -1);
 991                 if (getnb() == '=') {
 992                         v = expr(0);
 993                         for (ap = areap; ap != NULL; ap = ap->a_ap) {
 994                                 if (symeq(id, ap->a_id))
 995                                         break;
 996                         }
 997                         if (ap == NULL) {
 998                                 fprintf(stderr,
 999                                 "ASlink-Warning-No definition of area %s\n", id);
1000                                 lkerr++;
1001                         } else {
1002                                 ap->a_addr = v;
1003                                 ap->a_type = 1; /* JLH: value set */
1004                         }
1005                 } else {
1006                         fprintf(stderr, "ASlink-Warning-No '=' in base expression");
1007                         lkerr++;
1008                 }
1009                 bsp = bsp->b_base;
1010         }
1011 }
1012
1013 /*)Function     VOID    gblsav()
1014  *
1015  *      The function gblsav() creates a linked structure containing
1016  *      the global variable strings input to the linker.
1017  *
1018  *      local variable:
1019  *              none
1020  *
1021  *      global variables:
1022  *              globl   *globlp         The pointer to the first
1023  *                                              globl structure
1024  *              globl   *gsp            Pointer to the current
1025  *                                              globl structure
1026  *              char    *ip             pointer into the REL file
1027  *                                              text line in ib[]
1028  *              int     lkerr           error flag
1029  *
1030  *      functions called:
1031  *              char    getnb()         lklex.c
1032  *              VOID *  new()           lksym.c
1033  *              int     strlen()        c_library
1034  *              char *  strcpy()        c_library
1035  *              VOID    unget()         lklex.c
1036  *
1037  *      side effects:
1038  *              The globlp structure is created.
1039  */
1040
1041 VOID
1042 gblsav()
1043 {
1044         if (globlp == NULL) {
1045                 globlp = (struct globl *)
1046                         new (sizeof (struct globl));
1047                 gsp = globlp;
1048         } else {
1049                 gsp->g_globl = (struct globl *)
1050                                 new (sizeof (struct globl));
1051                 gsp = gsp->g_globl;
1052         }
1053         unget(getnb());
1054         gsp->g_strp = (char *) new (strlen(ip)+1);
1055         strcpy(gsp->g_strp, ip);
1056 }
1057
1058 /*)Function     VOID    setgbl()
1059  *
1060  *      The function setgbl() scans the global variable lines in hte
1061  *      globlp structure, evaluates the arguments, and sets a variable
1062  *      to this value.
1063  *
1064  *      local variables:
1065  *              int     v               expression value
1066  *              char    id[]            base id string
1067  *              sym *   sp              pointer to a symbol structure
1068  *
1069  *      global variables:
1070  *              char    *ip             pointer into the REL file
1071  *                                              text line in ib[]
1072  *              globl   *globlp         The pointer to the first
1073  *                                              globl structure
1074  *              globl   *gsp            Pointer to the current
1075  *                                              globl structure
1076  *              FILE *  stderr          c_library
1077  *              int     lkerr           error flag
1078  *
1079  *       functions called:
1080  *              Addr_T  expr()          lkeval.c
1081  *              int     fprintf()       c_library
1082  *              VOID    getid()         lklex.c
1083  *              char    getnb()         lklex.c
1084  *              sym *   lkpsym()        lksym.c
1085  *
1086  *      side effects:
1087  *              The value of a variable is set.
1088  */
1089
1090 VOID
1091 setgbl()
1092 {
1093         register int v;
1094         register struct sym *sp;
1095         char id[NCPS];
1096
1097         gsp = globlp;
1098         while (gsp) {
1099                 ip = gsp->g_strp;
1100                 getid(id, -1);
1101                 if (getnb() == '=') {
1102                         v = expr(0);
1103                         sp = lkpsym(id, 0);
1104                         if (sp == NULL) {
1105                                 fprintf(stderr,
1106                                 "No definition of symbol %s\n", id);
1107                                 lkerr++;
1108                         } else {
1109                                 if (sp->s_flag & S_DEF) {
1110                                         fprintf(stderr,
1111                                         "Redefinition of symbol %s\n", id);
1112                                         lkerr++;
1113                                         sp->s_axp = NULL;
1114                                 }
1115                                 sp->s_addr = v;
1116                                 sp->s_type |= S_DEF;
1117                         }
1118                 } else {
1119                         fprintf(stderr, "No '=' in global expression");
1120                         lkerr++;
1121                 }
1122                 gsp = gsp->g_globl;
1123         }
1124 }
1125
1126 /*)Function     FILE *  afile(fn,, ft, wf)
1127  *
1128  *              char *  fn              file specification string
1129  *              char *  ft              file type string
1130  *              int     wf              read(0)/write(1) flag
1131  *
1132  *      The function afile() opens a file for reading or writing.
1133  *              (1)     If the file type specification string ft
1134  *                      is not NULL then a file specification is
1135  *                      constructed with the file path\name in fn
1136  *                      and the extension in ft.
1137  *              (2)     If the file type specification string ft
1138  *                      is NULL then the file specification is
1139  *                      constructed from fn.  If fn does not have
1140  *                      a file type then the default .rel file
1141  *                      type is appended to the file specification.
1142  *
1143  *      afile() returns a file handle for the opened file or aborts
1144  *      the assembler on an open error.
1145  *
1146  *      local variables:
1147  *              char    fb[]            constructed file specification string
1148  *              FILE *  fp              filehandle for opened file
1149  *
1150  *      global variables:
1151  *              int     lkerr           error flag
1152  *
1153  *      functions called:
1154  *              FILE *  fopen()         c_library
1155  *              int     fprintf()       c_library
1156  *
1157  *      side effects:
1158  *              File is opened for read or write.
1159  */
1160
1161 FILE *
1162 afile(fn, ft, wf)
1163 char *fn;
1164 char *ft;
1165 {
1166         FILE *fp;
1167         char fb[PATH_MAX];
1168         char *omode;
1169         int i;
1170
1171         switch (wf) {
1172                 case 0: omode = "r"; break;
1173                 case 1: omode = "w"; break;
1174                 case 2: omode = "a"; break;
1175                 case 3: omode = "rb"; break;
1176                 case 4: omode = "wb"; break;
1177                 case 5: omode = "ab"; break;
1178                 default: omode = "r"; break;
1179         }
1180
1181         /*Look backward the name path and get rid of the extension, if any*/
1182         i=strlen(fn);
1183         for(; (fn[i]!='.')&&(fn[i]!='\\')&&(fn[i]!='/')&&(i>=0); i--);
1184         if( (fn[i]=='.') && strcmp(ft, "lnk") )
1185         {
1186                 strncpy(fb, fn, i);
1187                 fb[i]=0;
1188         }
1189         else
1190         {
1191                 strcpy(fb, fn);
1192         }
1193
1194         /*Add the extension*/
1195         strcat(fb, ".");
1196         strcat(fb, strlen(ft)?ft:"rel");
1197
1198         fp = fopen(fb, omode);
1199         if (fp==NULL)
1200         {
1201             if (strcmp(ft,"adb"))/*Do not complaint for optional adb files*/
1202                 {
1203                         fprintf(stderr, "%s: cannot %s.\n", fb, wf?"create":"open");
1204                         lkerr++;
1205             }
1206         }
1207         return (fp);
1208 }
1209
1210 /*)Function     VOID    iramsav()
1211  *
1212  *      The function iramsav() stores the size of the chip's internal RAM.
1213  *      This is used after linking to check that variable assignment to this
1214  *      dataspace didn't overflow into adjoining segments.  Variables in the
1215  *      DSEG, OSEG, and ISEG are assigned to this dataspace.
1216  *
1217  *      local variables:
1218  *              none
1219  *
1220  *      global variables:
1221  *              char    *ip             pointer into the REL file
1222  *                                              text line in ib[]
1223  *              unsigned int            size of chip's internal
1224  *                      iram_size               RAM segment
1225  *
1226  *       functions called:
1227  *              char    getnb()         lklex.c
1228  *              VOID    unget()         lklex.c
1229  *              Addr_T  expr()          lkeval.c
1230  *
1231  *      side effects:
1232  *              The iram_size may be modified.
1233  */
1234
1235 VOID
1236 iramsav()
1237 {
1238   unget(getnb());
1239   if (ip && *ip)
1240     //iram_size = atoi(ip);
1241     iram_size = expr(0);        /* evaluate size expression */
1242   else
1243     iram_size = 128;            /* Default is 128 (0x80) bytes */
1244 }
1245
1246 /*Similar to iramsav but for xram memory*/
1247 VOID
1248 xramsav()
1249 {
1250   unget(getnb());
1251   if (ip && *ip)
1252     xram_size = expr(0);        /* evaluate size expression */
1253   else
1254         xram_size = rflag?0x1000000:0x10000;
1255 }
1256
1257 /*Similar to iramsav but for code memory*/
1258 VOID
1259 codesav()
1260 {
1261   unget(getnb());
1262   if (ip && *ip)
1263     code_size = expr(0);        /* evaluate size expression */
1264   else
1265         code_size = rflag?0x1000000:0x10000;
1266 }
1267
1268
1269 /*)Function     VOID    iramcheck()
1270  *
1271  *      The function iramcheck() is used at the end of linking to check that
1272  *      the internal RAM area wasn't overflowed by too many variable
1273  *      assignments.  Variables in the DSEG, ISEG, and OSEG are assigned to
1274  *      the chip's internal RAM.
1275  *
1276  *      local variables:
1277  *              none
1278  *
1279  *      global variables:
1280  *              unsigned int            size of chip's internal
1281  *                      iram_size               RAM segment
1282  *              struct area             linked list of memory
1283  *                      *areap                  areas
1284  *
1285  *       functions called:
1286  *
1287  *      side effects:
1288  */
1289
1290 VOID
1291 iramcheck()
1292 {
1293   register unsigned int last_addr;
1294   register struct area *ap;
1295
1296   for (ap = areap; ap; ap=ap->a_ap) {
1297     if ((ap->a_size != 0) &&
1298         (!strcmp(ap->a_id, "DSEG") ||
1299          !strcmp(ap->a_id, "OSEG") ||
1300          !strcmp(ap->a_id, "ISEG")
1301         )
1302        )
1303     {
1304       last_addr = ap->a_addr + ap->a_size - 1;
1305       if (last_addr >= iram_size)
1306         fprintf(stderr,
1307                 "\nWARNING! Segment %s extends past the end\n"
1308                 "         of internal RAM.  Check map file.\n",
1309                 ap->a_id);
1310     }
1311   }
1312 }
1313
1314 char *usetxt[] = {
1315         "Startup:",
1316         "  -c   Command line input",
1317         "  -f   file[LNK] File input",
1318         "  -p   Prompt and echo of file[LNK] to stdout (default)",
1319         "  -n   No echo of file[LNK] to stdout",
1320 /*      "Usage: [-Options] file [file ...]", */
1321         "Libraries:",
1322         "  -k   Library path specification, one per -k",
1323         "  -l   Library file specification, one per -l",
1324         "Relocation:",
1325         "  -b   area base address = expression",
1326         "  -g   global symbol = expression",
1327         "Map format:",
1328         "  -m   Map output generated as file[MAP]",
1329         "  -x   Hexadecimal (default),  -d  Decimal,  -q  Octal",
1330         "Output:",
1331         "  -i   Intel Hex as file[IHX]",
1332         "  -s   Motorola S19 as file[S19]",
1333         "  -t   ELF executable as file[elf]",
1334         "  -j   Produce NoICE debug as file[NOI]",
1335         "  -z   Produce SDCdb debug as file[cdb]",
1336 /*      "List:", */
1337         "  -u   Update listing file(s) with link data as file(s)[.RST]",
1338         "Miscellaneous:\n"
1339         "  -a   [iram-size] Check for internal RAM overflow",
1340         "  -v   [xram-size] Check for external RAM overflow",
1341         "  -w   [code-size] Check for code overflow",
1342         "End:",
1343         "  -e   or null line terminates input",
1344         0
1345 };
1346
1347 /*)Function     VOID    usage()
1348  *
1349  *      The function usage() outputs to the stderr device the
1350  *      assembler name and version and a list of valid assembler options.
1351  *
1352  *      local variables:
1353  *              char ** dp              pointer to an array of
1354  *                                      text string pointers.
1355  *
1356  *      global variables:
1357  *              FILE *  stderr          c_library
1358  *
1359  *      functions called:
1360  *              int     fprintf()       c_library
1361  *
1362  *      side effects:
1363  *              none
1364  */
1365
1366 VOID
1367 usage()
1368 {
1369         register char   **dp;
1370
1371         fprintf(stderr, "\nASxxxx Linker %s\n\n", VERSION);
1372         for (dp = usetxt; *dp; dp++)
1373                 fprintf(stderr, "%s\n", *dp);
1374         lkexit(1);
1375 }
1376
1377 /*)Function     VOID    copyfile()
1378  *
1379  *              FILE    *dest           destination file
1380  *              FILE    *src            source file
1381  *
1382  *      function will copy source file to destination file
1383  *
1384  *
1385  *      functions called:
1386  *              int     fgetc()         c_library
1387  *              int     fputc()         c_library
1388  *
1389  *      side effects:
1390  *              none
1391  */
1392 VOID copyfile (dest,src)
1393 FILE *src,*dest ;
1394 {
1395     int ch;
1396     while ((ch = fgetc(src)) != EOF) {
1397
1398         fputc(ch,dest);
1399     }
1400 }