output/outrdf2.c

   1 /*
   2  * outrdf2.c    output routines for the Netwide Assembler to produce
   3  *              RDOFF version 2 format object files, which Julian originally
   4  *              planned to use it in his MOSCOW operating system.
   5  *
   6  * The Netwide Assembler is copyright (C) 1996-1998 Simon Tatham and
   7  * Julian Hall. All rights reserved. The software is
   8  * redistributable under the licence given in the file "Licence"
   9  * distributed in the NASM archive.
  10  */
  11
  12 #include "compiler.h"
  13
  14 #include <stdio.h>
  15 #include <stdlib.h>
  16 #include <string.h>
  17 #include <ctype.h>
  18 #include <assert.h>
  19 #include <inttypes.h>
  20
  21 #include "nasm.h"
  22 #include "nasmlib.h"
  23 #include "outform.h"
  24
  25 /* VERBOSE_WARNINGS: define this to add some extra warnings... */
  26 #define VERBOSE_WARNINGS
  27
  28 #ifdef OF_RDF2
  29
  30 #include "rdoff/rdoff.h"
  31
  32 /* This signature is written to start of RDOFF files */
  33 static const char *RDOFF2Id = RDOFF2_SIGNATURE;
  34
  35 /* Note that whenever a segment is referred to in the RDOFF file, its number
  36  * is always half of the segment number that NASM uses to refer to it; this
  37  * is because NASM only allocates even numbered segments, so as to not
  38  * waste any of the 16 bits of segment number written to the file - this
  39  * allows up to 65533 external labels to be defined; otherwise it would be
  40  * 32764. */
  41
  42 #define COUNT_SEGTYPES 9
  43
  44 static char *segmenttypes[COUNT_SEGTYPES] = {
  45     "null", "text", "code", "data",
  46     "comment", "lcomment", "pcomment",
  47     "symdebug", "linedebug"
  48 };
  49
  50 static int segmenttypenumbers[COUNT_SEGTYPES] = {
  51     0, 1, 1, 2, 3, 4, 5, 6, 7
  52 };
  53
  54 /* code for managing buffers needed to separate code and data into individual
  55  * sections until they are ready to be written to the file.
  56  * We'd better hope that it all fits in memory else we're buggered... */
  57
  58 #define BUF_BLOCK_LEN 4088      /* selected to match page size (4096)
  59                                  * on 80x86 machines for efficiency */
  60
  61 /***********************************************************************
  62  * Actual code to deal with RDOFF2 ouput format begins here...
  63  */
  64
  65 /* global variables set during the initialisation phase */
  66
  67 static struct SAA *seg[RDF_MAXSEGS];    /* seg 0 = code, seg 1 = data */
  68 static struct SAA *header;      /* relocation/import/export records */
  69
  70 static FILE *ofile;
  71
  72 static efunc error;
  73
  74 static struct seginfo {
  75     char *segname;
  76     int segnumber;
  77     uint16_t segtype;
  78     uint16_t segreserved;
  79     int32_t seglength;
  80 } segments[RDF_MAXSEGS];
  81
  82 static int nsegments;
  83
  84 static int32_t bsslength;
  85 static int32_t headerlength;
  86
  87 static void rdf2_init(FILE * fp, efunc errfunc, ldfunc ldef, evalfunc eval)
  88 {
  89     int segtext, segdata, segbss;
  90
  91     (void)ldef;
  92     (void)eval;
  93
  94     maxbits = 64;
  95
  96     /* set up the initial segments */
  97     segments[0].segname = ".text";
  98     segments[0].segnumber = 0;
  99     segments[0].segtype = 1;
 100     segments[0].segreserved = 0;
 101     segments[0].seglength = 0;
 102
 103     segments[1].segname = ".data";
 104     segments[1].segnumber = 1;
 105     segments[1].segtype = 2;
 106     segments[1].segreserved = 0;
 107     segments[1].seglength = 0;
 108
 109     segments[2].segname = ".bss";
 110     segments[2].segnumber = 2;
 111     segments[2].segtype = 0xFFFF;       /* reserved - should never be produced */
 112     segments[2].segreserved = 0;
 113     segments[2].seglength = 0;
 114
 115     nsegments = 3;
 116
 117     ofile = fp;
 118     error = errfunc;
 119
 120     seg[0] = saa_init(1L);
 121     seg[1] = saa_init(1L);
 122     seg[2] = NULL;              /* special case! */
 123
 124     header = saa_init(1L);
 125
 126     segtext = seg_alloc();
 127     segdata = seg_alloc();
 128     segbss = seg_alloc();
 129     if (segtext != 0 || segdata != 2 || segbss != 4)
 130         error(ERR_PANIC,
 131               "rdf segment numbers not allocated as expected (%d,%d,%d)",
 132               segtext, segdata, segbss);
 133     bsslength = 0;
 134     headerlength = 0;
 135 }
 136
 137 static int32_t rdf2_section_names(char *name, int pass, int *bits)
 138 {
 139     int i;
 140     bool err;
 141     char *p, *q;
 142     int code = -1;
 143     int reserved = 0;
 144
 145     (void)pass;
 146
 147     /*
 148      * Default is 32 bits, in the text segment.
 149      */
 150     if (!name) {
 151         *bits = 32;
 152         return 0;
 153     }
 154
 155     /* look for segment type code following segment name */
 156     p = name;
 157     while (*p && !isspace(*p))
 158         p++;
 159     if (*p) {                   /* we're now in whitespace */
 160         *p++ = '\0';
 161         while (*p && isspace(80))
 162             *p++ = '\0';
 163     }
 164     if (*p) {                   /* we're now in an attribute value */
 165         /*
 166          * see if we have an optional ',number' following the type code
 167          */
 168         if ((q = strchr(p, ','))) {
 169             *q++ = '\0';
 170
 171             reserved = readnum(q, &err);
 172             if (err) {
 173                 error(ERR_NONFATAL,
 174                       "value following comma must be numeric");
 175                 reserved = 0;
 176             }
 177         }
 178         /*
 179          * check it against the text strings in segmenttypes
 180          */
 181
 182         for (i = 0; i < COUNT_SEGTYPES; i++)
 183             if (!nasm_stricmp(p, segmenttypes[i])) {
 184                 code = segmenttypenumbers[i];
 185                 break;
 186             }
 187         if (code == -1) {       /* didn't find anything */
 188             code = readnum(p, &err);
 189             if (err) {
 190                 error(ERR_NONFATAL, "unrecognised RDF segment type (%s)",
 191                       p);
 192                 code = 3;
 193             }
 194         }
 195     }
 196     for (i = 0; i < nsegments; i++) {
 197         if (!strcmp(name, segments[i].segname)) {
 198             if (code != -1 || reserved != 0)
 199                 error(ERR_NONFATAL, "segment attributes specified on"
 200                       " redeclaration of segment");
 201             return segments[i].segnumber * 2;
 202         }
 203     }
 204
 205     /* declaring a new segment! */
 206
 207     if (code == -1) {
 208         error(ERR_NONFATAL, "new segment declared without type code");
 209         code = 3;
 210     }
 211     if (nsegments == RDF_MAXSEGS) {
 212         error(ERR_FATAL, "reached compiled-in maximum segment limit (%d)",
 213               RDF_MAXSEGS);
 214         return NO_SEG;
 215     }
 216
 217     segments[nsegments].segname = nasm_strdup(name);
 218     i = seg_alloc();
 219     if (i % 2 != 0)
 220         error(ERR_PANIC, "seg_alloc() returned odd number");
 221     segments[nsegments].segnumber = i >> 1;
 222     segments[nsegments].segtype = code;
 223     segments[nsegments].segreserved = reserved;
 224     segments[nsegments].seglength = 0;
 225
 226     seg[nsegments] = saa_init(1L);
 227
 228     return i;
 229 }
 230
 231 /*
 232  * Write relocation record
 233  */
 234 static void write_reloc_rec(struct RelocRec *r)
 235 {
 236     char buf[4], *b;
 237
 238     if (r->refseg != (uint16_t) NO_SEG && (r->refseg & 1))        /* segment base ref */
 239         r->type = RDFREC_SEGRELOC;
 240
 241     r->refseg >>= 1;            /* adjust segment nos to RDF rather than NASM */
 242
 243     saa_wbytes(header, &r->type, 1);
 244     saa_wbytes(header, &r->reclen, 1);
 245     saa_wbytes(header, &r->segment, 1);
 246     b = buf;
 247     WRITELONG(b, r->offset);
 248     saa_wbytes(header, buf, 4);
 249     saa_wbytes(header, &r->length, 1);
 250     b = buf;
 251     WRITESHORT(b, r->refseg);
 252     saa_wbytes(header, buf, 2);
 253     headerlength += r->reclen + 2;
 254 }
 255
 256 /*
 257  * Write export record
 258  */
 259 static void write_export_rec(struct ExportRec *r)
 260 {
 261     char buf[4], *b;
 262
 263     r->segment >>= 1;
 264
 265     saa_wbytes(header, &r->type, 1);
 266     saa_wbytes(header, &r->reclen, 1);
 267     saa_wbytes(header, &r->flags, 1);
 268     saa_wbytes(header, &r->segment, 1);
 269     b = buf;
 270     WRITELONG(b, r->offset);
 271     saa_wbytes(header, buf, 4);
 272     saa_wbytes(header, r->label, strlen(r->label) + 1);
 273     headerlength += r->reclen + 2;
 274 }
 275
 276 static void write_import_rec(struct ImportRec *r)
 277 {
 278     char buf[4], *b;
 279
 280     r->segment >>= 1;
 281
 282     saa_wbytes(header, &r->type, 1);
 283     saa_wbytes(header, &r->reclen, 1);
 284     saa_wbytes(header, &r->flags, 1);
 285     b = buf;
 286     WRITESHORT(b, r->segment);
 287     saa_wbytes(header, buf, 2);
 288     saa_wbytes(header, r->label, strlen(r->label) + 1);
 289     headerlength += r->reclen + 2;
 290 }
 291
 292 /*
 293  * Write BSS record
 294  */
 295 static void write_bss_rec(struct BSSRec *r)
 296 {
 297     char buf[4], *b;
 298
 299     saa_wbytes(header, &r->type, 1);
 300     saa_wbytes(header, &r->reclen, 1);
 301     b = buf;
 302     WRITELONG(b, r->amount);
 303     saa_wbytes(header, buf, 4);
 304     headerlength += r->reclen + 2;
 305 }
 306
 307 /*
 308  * Write common variable record
 309  */
 310 static void write_common_rec(struct CommonRec *r)
 311 {
 312     char buf[4], *b;
 313
 314     r->segment >>= 1;
 315
 316     saa_wbytes(header, &r->type, 1);
 317     saa_wbytes(header, &r->reclen, 1);
 318     b = buf;
 319     WRITESHORT(b, r->segment);
 320     saa_wbytes(header, buf, 2);
 321     b = buf;
 322     WRITELONG(b, r->size);
 323     saa_wbytes(header, buf, 4);
 324     b = buf;
 325     WRITESHORT(b, r->align);
 326     saa_wbytes(header, buf, 2);
 327     saa_wbytes(header, r->label, strlen(r->label) + 1);
 328     headerlength += r->reclen + 2;
 329 }
 330
 331 /*
 332  * Write library record
 333  */
 334 static void write_dll_rec(struct DLLRec *r)
 335 {
 336     saa_wbytes(header, &r->type, 1);
 337     saa_wbytes(header, &r->reclen, 1);
 338     saa_wbytes(header, r->libname, strlen(r->libname) + 1);
 339     headerlength += r->reclen + 2;
 340 }
 341
 342 /*
 343  * Write module name record
 344  */
 345 static void write_modname_rec(struct ModRec *r)
 346 {
 347     saa_wbytes(header, &r->type, 1);
 348     saa_wbytes(header, &r->reclen, 1);
 349     saa_wbytes(header, r->modname, strlen(r->modname) + 1);
 350     headerlength += r->reclen + 2;
 351 }
 352
 353 /*
 354  * Handle export, import and common records.
 355  */
 356 static void rdf2_deflabel(char *name, int32_t segment, int32_t offset,
 357                           int is_global, char *special)
 358 {
 359     struct ExportRec r;
 360     struct ImportRec ri;
 361     struct CommonRec ci;
 362     static int farsym = 0;
 363     static int i;
 364     char symflags = 0;
 365     int len;
 366
 367     /* Check if the label length is OK */
 368     if ((len = strlen(name)) >= EXIM_LABEL_MAX) {
 369         error(ERR_NONFATAL, "label size exceeds %d bytes", EXIM_LABEL_MAX);
 370         return;
 371     }
 372     if (!len) {
 373         error(ERR_NONFATAL, "zero-length label");
 374         return;
 375     }
 376
 377     if (is_global == 2) {
 378         /* Common variable */
 379         ci.type = RDFREC_COMMON;
 380         ci.size = offset;
 381         ci.segment = segment;
 382         strcpy(ci.label, name);
 383         ci.reclen = 9 + len;
 384         ci.align = 0;
 385
 386         /*
 387          * Check the special text to see if it's a valid number and power
 388          * of two; if so, store it as the alignment for the common variable.
 389          */
 390         if (special) {
 391             bool err;
 392             ci.align = readnum(special, &err);
 393             if (err)
 394                 error(ERR_NONFATAL, "alignment constraint `%s' is not a"
 395                       " valid number", special);
 396             else if ((ci.align | (ci.align - 1)) != 2 * ci.align - 1)
 397                 error(ERR_NONFATAL, "alignment constraint `%s' is not a"
 398                       " power of two", special);
 399         }
 400         write_common_rec(&ci);
 401     }
 402
 403     /* We don't care about local labels or fix-up hints */
 404     if (is_global != 1)
 405         return;
 406
 407     if (special) {
 408         while (*special == ' ' || *special == '\t')
 409             special++;
 410
 411         if (!nasm_strnicmp(special, "export", 6)) {
 412             special += 6;
 413             symflags |= SYM_GLOBAL;
 414         } else if (!nasm_strnicmp(special, "import", 6)) {
 415             special += 6;
 416             symflags |= SYM_IMPORT;
 417         }
 418
 419         if (*special) {
 420             while (isspace(*special))
 421                 special++;
 422             if (!nasm_stricmp(special, "far")) {
 423                 farsym = 1;
 424             } else if (!nasm_stricmp(special, "near")) {
 425                 farsym = 0;
 426             } else if (!nasm_stricmp(special, "proc") ||
 427                        !nasm_stricmp(special, "function")) {
 428                 symflags |= SYM_FUNCTION;
 429             } else if (!nasm_stricmp(special, "data") ||
 430                        !nasm_stricmp(special, "object")) {
 431                 symflags |= SYM_DATA;
 432             } else
 433                 error(ERR_NONFATAL, "unrecognised symbol type `%s'",
 434                       special);
 435         }
 436     }
 437
 438     if (name[0] == '.' && name[1] == '.' && name[2] != '@') {
 439         error(ERR_NONFATAL, "unrecognised special symbol `%s'", name);
 440         return;
 441     }
 442
 443     for (i = 0; i < nsegments; i++) {
 444         if (segments[i].segnumber == segment >> 1)
 445             break;
 446     }
 447
 448     if (i >= nsegments) {       /* EXTERN declaration */
 449         ri.type = farsym ? RDFREC_FARIMPORT : RDFREC_IMPORT;
 450         if (symflags & SYM_GLOBAL)
 451             error(ERR_NONFATAL,
 452                   "symbol type conflict - EXTERN cannot be EXPORT");
 453         ri.flags = symflags;
 454         ri.segment = segment;
 455         strcpy(ri.label, name);
 456         ri.reclen = 4 + len;
 457         write_import_rec(&ri);
 458     } else if (is_global) {
 459         r.type = RDFREC_GLOBAL; /* GLOBAL declaration */
 460         if (symflags & SYM_IMPORT)
 461             error(ERR_NONFATAL,
 462                   "symbol type conflict - GLOBAL cannot be IMPORT");
 463         r.flags = symflags;
 464         r.segment = segment;
 465         r.offset = offset;
 466         strcpy(r.label, name);
 467         r.reclen = 7 + len;
 468         write_export_rec(&r);
 469     }
 470 }
 471
 472 static void membufwrite(int segment, const void *data, int bytes)
 473 {
 474     int i;
 475     char buf[4], *b;
 476
 477     for (i = 0; i < nsegments; i++) {
 478         if (segments[i].segnumber == segment)
 479             break;
 480     }
 481     if (i == nsegments)
 482         error(ERR_PANIC, "can't find segment %d", segment);
 483
 484     if (bytes < 0) {
 485         b = buf;
 486         if (bytes == -2)
 487             WRITESHORT(b, *(int16_t *)data);
 488         else
 489             WRITELONG(b, *(int32_t *)data);
 490         data = buf;
 491         bytes = -bytes;
 492     }
 493     segments[i].seglength += bytes;
 494     saa_wbytes(seg[i], data, bytes);
 495 }
 496
 497 static int getsegmentlength(int segment)
 498 {
 499     int i;
 500     for (i = 0; i < nsegments; i++) {
 501         if (segments[i].segnumber == segment)
 502             break;
 503     }
 504     if (i == nsegments)
 505         error(ERR_PANIC, "can't find segment %d", segment);
 506
 507     return segments[i].seglength;
 508 }
 509
 510 static void rdf2_out(int32_t segto, const void *data, uint32_t type,
 511                      int32_t segment, int32_t wrt)
 512 {
 513     int32_t bytes = type & OUT_SIZMASK;
 514     struct RelocRec rr;
 515     uint8_t databuf[8], *pd;
 516     int seg;
 517
 518     if (segto == NO_SEG) {
 519         if ((type & OUT_TYPMASK) != OUT_RESERVE)
 520             error(ERR_NONFATAL,
 521                   "attempt to assemble code in ABSOLUTE space");
 522         return;
 523     }
 524
 525     segto >>= 1;                /* convert NASM segment no to RDF number */
 526
 527     for (seg = 0; seg < nsegments; seg++) {
 528         if (segments[seg].segnumber == segto)
 529             break;
 530     }
 531     if (seg >= nsegments) {
 532         error(ERR_NONFATAL,
 533               "specified segment not supported by rdf output format");
 534         return;
 535     }
 536
 537     if (wrt != NO_SEG) {
 538         wrt = NO_SEG;           /* continue to do _something_ */
 539         error(ERR_NONFATAL, "WRT not supported by rdf output format");
 540     }
 541
 542     type &= OUT_TYPMASK;
 543
 544     if (segto == 2 && type != OUT_RESERVE) {
 545         error(ERR_NONFATAL, "BSS segments may not be initialized");
 546
 547         /* just reserve the space for now... */
 548
 549         if (type == OUT_REL2ADR)
 550             bytes = 2;
 551         else
 552             bytes = 4;
 553         type = OUT_RESERVE;
 554     }
 555
 556     if (type == OUT_RESERVE) {
 557         if (segto == 2)         /* BSS segment space reserverd */
 558             bsslength += bytes;
 559         else
 560             while (bytes--)
 561                 membufwrite(segto, databuf, 1);
 562     } else if (type == OUT_RAWDATA) {
 563         if (segment != NO_SEG)
 564             error(ERR_PANIC, "OUT_RAWDATA with other than NO_SEG");
 565
 566         membufwrite(segto, data, bytes);
 567     } else if (type == OUT_ADDRESS) {
 568
 569         /* if segment == NO_SEG then we are writing an address of an
 570            object within the same segment - do not produce reloc rec. */
 571
 572         /* FIXME - is this behaviour sane? at first glance it doesn't
 573            appear to be. Must test this thoroughly...! */
 574
 575         if (segment != NO_SEG) {
 576             /* it's an address, so we must write a relocation record */
 577
 578             rr.type = RDFREC_RELOC;     /* type signature */
 579             rr.reclen = 8;
 580             rr.segment = segto; /* segment we're currently in */
 581             rr.offset = getsegmentlength(segto);        /* current offset */
 582             rr.length = bytes;  /* length of reference */
 583             rr.refseg = segment;        /* segment referred to */
 584             write_reloc_rec(&rr);
 585         }
 586
 587         pd = databuf;           /* convert address to little-endian */
 588         if (bytes == 4)
 589             WRITESHORT(pd, *(int32_t *)data);
 590         else if (bytes == 8)
 591             WRITEDLONG(pd, *(int64_t *)data);
 592         else
 593             WRITESHORT(pd, *(int32_t *)data);
 594
 595         membufwrite(segto, databuf, bytes);
 596
 597     } else if (type == OUT_REL2ADR) {
 598         if (segment == segto)
 599             error(ERR_PANIC, "intra-segment OUT_REL2ADR");
 600
 601         rr.reclen = 8;
 602         rr.offset = getsegmentlength(segto);    /* current offset */
 603         rr.length = 2;          /* length of reference */
 604         rr.refseg = segment;    /* segment referred to (will be >>1'd) */
 605
 606         if (segment != NO_SEG && segment % 2) {
 607             rr.type = RDFREC_SEGRELOC;
 608             rr.segment = segto; /* memory base refs *aren't ever* relative! */
 609             write_reloc_rec(&rr);
 610
 611             /* what do we put in the code? Simply the data. This should almost
 612              * always be zero, unless someone's doing segment arithmetic...
 613              */
 614             rr.offset = *(int32_t *)data;
 615         } else {
 616             rr.type = RDFREC_RELOC;     /* type signature */
 617             rr.segment = segto + 64;    /* segment we're currently in + rel flag */
 618             write_reloc_rec(&rr);
 619
 620             /* work out what to put in the code: offset of the end of this operand,
 621              * subtracted from any data specified, so that loader can just add
 622              * address of imported symbol onto it to get address relative to end of
 623              * instruction: import_address + data(offset) - end_of_instrn */
 624
 625             rr.offset = *(int32_t *)data - (rr.offset + bytes);
 626         }
 627
 628         membufwrite(segto, &rr.offset, -2);
 629     } else if (type == OUT_REL4ADR) {
 630         if ((segment == segto) && (globalbits != 64))
 631             error(ERR_PANIC, "intra-segment OUT_REL4ADR");
 632         if (segment != NO_SEG && segment % 2) {
 633             error(ERR_PANIC, "erm... 4 byte segment base ref?");
 634         }
 635
 636         rr.type = RDFREC_RELOC; /* type signature */
 637         rr.segment = segto + 64;        /* segment we're currently in + rel tag */
 638         rr.offset = getsegmentlength(segto);    /* current offset */
 639         rr.length = 4;          /* length of reference */
 640         rr.refseg = segment;    /* segment referred to */
 641         rr.reclen = 8;
 642         write_reloc_rec(&rr);
 643
 644         rr.offset = *(int32_t *)data - (rr.offset + bytes);
 645
 646         membufwrite(segto, &rr.offset, -4);
 647     }
 648 }
 649
 650 static void rdf2_cleanup(int debuginfo)
 651 {
 652     int32_t l;
 653     struct BSSRec bs;
 654     int i;
 655
 656     (void)debuginfo;
 657
 658     /* should write imported & exported symbol declarations to header here */
 659
 660     /* generate the output file... */
 661     fwrite(RDOFF2Id, 6, 1, ofile);      /* file type magic number */
 662
 663     if (bsslength != 0) {       /* reserve BSS */
 664         bs.type = RDFREC_BSS;
 665         bs.amount = bsslength;
 666         bs.reclen = 4;
 667         write_bss_rec(&bs);
 668     }
 669
 670     /*
 671      * calculate overall length of the output object
 672      */
 673     l = headerlength + 4;
 674
 675     for (i = 0; i < nsegments; i++) {
 676         if (i == 2)
 677             continue;           /* skip BSS segment */
 678         l += 10 + segments[i].seglength;
 679     }
 680     l += 10;                    /* null segment */
 681
 682     fwriteint32_t(l, ofile);
 683
 684     fwriteint32_t(headerlength, ofile);
 685     saa_fpwrite(header, ofile); /* dump header */
 686     saa_free(header);
 687
 688     for (i = 0; i < nsegments; i++) {
 689         if (i == 2)
 690             continue;
 691
 692         fwriteint16_t(segments[i].segtype, ofile);
 693         fwriteint16_t(segments[i].segnumber, ofile);
 694         fwriteint16_t(segments[i].segreserved, ofile);
 695         fwriteint32_t(segments[i].seglength, ofile);
 696
 697         saa_fpwrite(seg[i], ofile);
 698         saa_free(seg[i]);
 699     }
 700
 701     /* null segment - write 10 bytes of zero */
 702     fwriteint32_t(0, ofile);
 703     fwriteint32_t(0, ofile);
 704     fwriteint16_t(0, ofile);
 705
 706     fclose(ofile);
 707 }
 708
 709 static int32_t rdf2_segbase(int32_t segment)
 710 {
 711     return segment;
 712 }
 713
 714 /*
 715  * Handle RDOFF2 specific directives
 716  */
 717 static int rdf2_directive(char *directive, char *value, int pass)
 718 {
 719     int n;
 720
 721     /* Check if the name length is OK */
 722     if ((n = strlen(value)) >= MODLIB_NAME_MAX) {
 723         error(ERR_NONFATAL, "name size exceeds %d bytes", MODLIB_NAME_MAX);
 724         return 0;
 725     }
 726
 727     if (!strcmp(directive, "library")) {
 728         if (pass == 1) {
 729             struct DLLRec r;
 730             r.type = RDFREC_DLL;
 731             r.reclen = n + 1;
 732             strcpy(r.libname, value);
 733             write_dll_rec(&r);
 734         }
 735         return 1;
 736     }
 737
 738     if (!strcmp(directive, "module")) {
 739         if (pass == 1) {
 740             struct ModRec r;
 741             r.type = RDFREC_MODNAME;
 742             r.reclen = n + 1;
 743             strcpy(r.modname, value);
 744             write_modname_rec(&r);
 745         }
 746         return 1;
 747     }
 748
 749     return 0;
 750 }
 751
 752 static void rdf2_filename(char *inname, char *outname, efunc error)
 753 {
 754     standard_extension(inname, outname, ".rdf", error);
 755 }
 756
 757 static const char *rdf2_stdmac[] = {
 758     "%define __SECT__ [section .text]",
 759     "%imacro library 1+.nolist",
 760     "[library %1]",
 761     "%endmacro",
 762     "%imacro module 1+.nolist",
 763     "[module %1]",
 764     "%endmacro",
 765     "%macro __NASM_CDecl__ 1",
 766     "%endmacro",
 767     NULL
 768 };
 769
 770 static int rdf2_set_info(enum geninfo type, char **val)
 771 {
 772     (void)type;
 773     (void)val;
 774     return 0;
 775 }
 776
 777 struct ofmt of_rdf2 = {
 778     "Relocatable Dynamic Object File Format v2.0",
 779     "rdf",
 780     NULL,
 781     null_debug_arr,
 782     &null_debug_form,
 783     rdf2_stdmac,
 784     rdf2_init,
 785     rdf2_set_info,
 786     rdf2_out,
 787     rdf2_deflabel,
 788     rdf2_section_names,
 789     rdf2_segbase,
 790     rdf2_directive,
 791     rdf2_filename,
 792     rdf2_cleanup
 793 };
 794
 795 #endif                          /* OF_RDF2 */