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