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