output/outieee.c

   1 /* ----------------------------------------------------------------------- *
   2  *
   3  *   Copyright 1996-2009 The NASM Authors - All Rights Reserved
   4  *   See the file AUTHORS included with the NASM distribution for
   5  *   the specific copyright holders.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following
   9  *   conditions are met:
  10  *
  11  *   * Redistributions of source code must retain the above copyright
  12  *     notice, this list of conditions and the following disclaimer.
  13  *   * Redistributions in binary form must reproduce the above
  14  *     copyright notice, this list of conditions and the following
  15  *     disclaimer in the documentation and/or other materials provided
  16  *     with the distribution.
  17  *
  18  *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
  19  *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
  20  *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  21  *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  22  *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  23  *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  24  *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  25  *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  26  *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28  *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  29  *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  30  *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  *
  32  * ----------------------------------------------------------------------- */
  33
  34 /*
  35  * outieee.c    output routines for the Netwide Assembler to produce
  36  *              IEEE-std object files
  37  */
  38
  39 /* notes: I have tried to make this correspond to the IEEE version
  40  * of the standard, specifically the primary ASCII version.  It should
  41  * be trivial to create the binary version given this source (which is
  42  * one of MANY things that have to be done to make this correspond to
  43  * the hp-microtek version of the standard).
  44  *
  45  * 16-bit support is assumed to use 24-bit addresses
  46  * The linker can sort out segmentation-specific stuff
  47  * if it keeps track of externals
  48  * in terms of being relative to section bases
  49  *
  50  * A non-standard variable type, the 'Yn' variable, has been introduced.
  51  * Basically it is a reference to extern 'n'- denoting the low limit
  52  * (L-variable) of the section that extern 'n' is defined in.  Like the
  53  * x variable, there may be no explicit assignment to it, it is derived
  54  * from the public definition corresponding to the extern name.  This
  55  * is required because the one thing the mufom guys forgot to do well was
  56  * take into account segmented architectures.
  57  *
  58  * I use comment classes for various things and these are undefined by
  59  * the standard.
  60  *
  61  * Debug info should be considered totally non-standard (local labels are
  62  * standard but linenum records are not covered by the standard.
  63  * Type defs have the standard format but absolute meanings for ordinal
  64  * types are not covered by the standard.)
  65  *
  66  * David Lindauer, LADsoft
  67  */
  68 #include "compiler.h"
  69
  70 #include <stdio.h>
  71 #include <stdlib.h>
  72 #include <string.h>
  73 #include <time.h>
  74 #include <stdarg.h>             /* Note: we need the ANSI version of stdarg.h */
  75 #include <ctype.h>
  76 #include <inttypes.h>
  77
  78 #include "nasm.h"
  79 #include "nasmlib.h"
  80 #include "output/outform.h"
  81 #include "output/outlib.h"
  82
  83 #ifdef OF_IEEE
  84
  85 #define ARRAY_BOT 0x1
  86
  87 static char ieee_infile[FILENAME_MAX];
  88 static int ieee_uppercase;
  89
  90 static bool any_segs;
  91 static int arrindex;
  92
  93 #define HUNKSIZE 1024           /* Size of the data hunk */
  94 #define EXT_BLKSIZ 512
  95 #define LDPERLINE 32            /* bytes per line in output */
  96
  97 struct ieeeSection;
  98
  99 struct LineNumber {
 100     struct LineNumber *next;
 101     struct ieeeSection *segment;
 102     int32_t offset;
 103     int32_t lineno;
 104 };
 105
 106 static struct FileName {
 107     struct FileName *next;
 108     char *name;
 109     int32_t index;
 110 } *fnhead, **fntail;
 111
 112 static struct Array {
 113     struct Array *next;
 114     unsigned size;
 115     int basetype;
 116 } *arrhead, **arrtail;
 117
 118 static struct ieeePublic {
 119     struct ieeePublic *next;
 120     char *name;
 121     int32_t offset;
 122     int32_t segment;               /* only if it's far-absolute */
 123     int32_t index;
 124     int type;                   /* for debug purposes */
 125 } *fpubhead, **fpubtail, *last_defined;
 126
 127 static struct ieeeExternal {
 128     struct ieeeExternal *next;
 129     char *name;
 130     int32_t commonsize;
 131 } *exthead, **exttail;
 132
 133 static int externals;
 134
 135 static struct ExtBack {
 136     struct ExtBack *next;
 137     int index[EXT_BLKSIZ];
 138 } *ebhead, **ebtail;
 139
 140 /* NOTE: the first segment MUST be the lineno segment */
 141 static struct ieeeSection {
 142     struct ieeeSection *next;
 143     char *name;
 144     struct ieeeObjData *data, *datacurr;
 145     struct ieeeFixupp *fptr, *flptr;
 146     int32_t index;                 /* the NASM segment id */
 147     int32_t ieee_index;            /* the OBJ-file segment index */
 148     int32_t currentpos;
 149     int32_t align;                 /* can be SEG_ABS + absolute addr */
 150     int32_t startpos;
 151     int32_t use32;                 /* is this segment 32-bit? */
 152     struct ieeePublic *pubhead, **pubtail, *lochead, **loctail;
 153     enum {
 154         CMB_PRIVATE = 0,
 155         CMB_PUBLIC = 2,
 156         CMB_COMMON = 6
 157     } combine;
 158 } *seghead, **segtail, *ieee_seg_needs_update;
 159
 160 struct ieeeObjData {
 161     struct ieeeObjData *next;
 162     uint8_t data[HUNKSIZE];
 163 };
 164
 165 struct ieeeFixupp {
 166     struct ieeeFixupp *next;
 167     enum {
 168         FT_SEG = 0,
 169         FT_REL = 1,
 170         FT_OFS = 2,
 171         FT_EXT = 3,
 172         FT_WRT = 4,
 173         FT_EXTREL = 5,
 174         FT_EXTWRT = 6,
 175         FT_EXTSEG = 7
 176     } ftype;
 177     int16_t size;
 178     int32_t id1;
 179     int32_t id2;
 180     int32_t offset;
 181     int32_t addend;
 182 };
 183
 184 static int32_t ieee_entry_seg, ieee_entry_ofs;
 185 static int checksum;
 186
 187 extern struct ofmt of_ieee;
 188
 189 static void ieee_data_new(struct ieeeSection *);
 190 static void ieee_write_fixup(int32_t, int32_t, struct ieeeSection *,
 191                              int, uint64_t, int32_t);
 192 static void ieee_install_fixup(struct ieeeSection *, struct ieeeFixupp *);
 193 static int32_t ieee_segment(char *, int, int *);
 194 static void ieee_write_file(int debuginfo);
 195 static void ieee_write_byte(struct ieeeSection *, int);
 196 static void ieee_write_word(struct ieeeSection *, int);
 197 static void ieee_write_dword(struct ieeeSection *, int32_t);
 198 static void ieee_putascii(char *, ...);
 199 static void ieee_putcs(int);
 200 static int32_t ieee_putld(int32_t, int32_t, uint8_t *);
 201 static int32_t ieee_putlr(struct ieeeFixupp *);
 202 static void ieee_unqualified_name(char *, char *);
 203
 204 /*
 205  * pup init
 206  */
 207 static void ieee_init(void)
 208 {
 209     any_segs = false;
 210     fpubhead = NULL;
 211     fpubtail = &fpubhead;
 212     exthead = NULL;
 213     exttail = &exthead;
 214     externals = 1;
 215     ebhead = NULL;
 216     ebtail = &ebhead;
 217     seghead = ieee_seg_needs_update = NULL;
 218     segtail = &seghead;
 219     ieee_entry_seg = NO_SEG;
 220     ieee_uppercase = false;
 221     checksum = 0;
 222 }
 223
 224 static int ieee_set_info(enum geninfo type, char **val)
 225 {
 226     (void)type;
 227     (void)val;
 228
 229     return 0;
 230 }
 231
 232 /*
 233  * Rundown
 234  */
 235 static void ieee_cleanup(int debuginfo)
 236 {
 237     ieee_write_file(debuginfo);
 238     of_ieee.current_dfmt->cleanup();
 239     while (seghead) {
 240         struct ieeeSection *segtmp = seghead;
 241         seghead = seghead->next;
 242         while (segtmp->pubhead) {
 243             struct ieeePublic *pubtmp = segtmp->pubhead;
 244             segtmp->pubhead = pubtmp->next;
 245             nasm_free(pubtmp);
 246         }
 247         while (segtmp->fptr) {
 248             struct ieeeFixupp *fixtmp = segtmp->fptr;
 249             segtmp->fptr = fixtmp->next;
 250             nasm_free(fixtmp);
 251         }
 252         while (segtmp->data) {
 253             struct ieeeObjData *dattmp = segtmp->data;
 254             segtmp->data = dattmp->next;
 255             nasm_free(dattmp);
 256         }
 257         nasm_free(segtmp);
 258     }
 259     while (fpubhead) {
 260         struct ieeePublic *pubtmp = fpubhead;
 261         fpubhead = fpubhead->next;
 262         nasm_free(pubtmp);
 263     }
 264     while (exthead) {
 265         struct ieeeExternal *exttmp = exthead;
 266         exthead = exthead->next;
 267         nasm_free(exttmp);
 268     }
 269     while (ebhead) {
 270         struct ExtBack *ebtmp = ebhead;
 271         ebhead = ebhead->next;
 272         nasm_free(ebtmp);
 273     }
 274 }
 275
 276 /*
 277  * callback for labels
 278  */
 279 static void ieee_deflabel(char *name, int32_t segment,
 280                           int64_t offset, int is_global, char *special)
 281 {
 282     /*
 283      * We have three cases:
 284      *
 285      * (i) `segment' is a segment-base. If so, set the name field
 286      * for the segment structure it refers to, and then
 287      * return.
 288      *
 289      * (ii) `segment' is one of our segments, or a SEG_ABS segment.
 290      * Save the label position for later output of a PUBDEF record.
 291      *
 292      *
 293      * (iii) `segment' is not one of our segments. Save the label
 294      * position for later output of an EXTDEF.
 295      */
 296     struct ieeeExternal *ext;
 297     struct ExtBack *eb;
 298     struct ieeeSection *seg;
 299     int i;
 300
 301     if (special) {
 302         nasm_error(ERR_NONFATAL, "unrecognised symbol type `%s'", special);
 303     }
 304     /*
 305      * First check for the double-period, signifying something
 306      * unusual.
 307      */
 308     if (name[0] == '.' && name[1] == '.') {
 309         if (!strcmp(name, "..start")) {
 310             ieee_entry_seg = segment;
 311             ieee_entry_ofs = offset;
 312         }
 313         return;
 314     }
 315
 316     /*
 317      * Case (i):
 318      */
 319     if (ieee_seg_needs_update) {
 320         ieee_seg_needs_update->name = name;
 321         return;
 322     }
 323     if (segment < SEG_ABS && segment != NO_SEG && segment % 2)
 324         return;
 325
 326     /*
 327      * case (ii)
 328      */
 329     if (segment >= SEG_ABS) {
 330         /*
 331          * SEG_ABS subcase of (ii).
 332          */
 333         if (is_global) {
 334             struct ieeePublic *pub;
 335
 336             pub = *fpubtail = nasm_malloc(sizeof(*pub));
 337             fpubtail = &pub->next;
 338             pub->next = NULL;
 339             pub->name = name;
 340             pub->offset = offset;
 341             pub->segment = segment & ~SEG_ABS;
 342         }
 343         return;
 344     }
 345
 346     for (seg = seghead; seg && is_global; seg = seg->next)
 347         if (seg->index == segment) {
 348             struct ieeePublic *pub;
 349
 350             last_defined = pub = *seg->pubtail = nasm_malloc(sizeof(*pub));
 351             seg->pubtail = &pub->next;
 352             pub->next = NULL;
 353             pub->name = name;
 354             pub->offset = offset;
 355             pub->index = seg->ieee_index;
 356             pub->segment = -1;
 357             return;
 358         }
 359
 360     /*
 361      * Case (iii).
 362      */
 363     if (is_global) {
 364         ext = *exttail = nasm_malloc(sizeof(*ext));
 365         ext->next = NULL;
 366         exttail = &ext->next;
 367         ext->name = name;
 368         if (is_global == 2)
 369             ext->commonsize = offset;
 370         else
 371             ext->commonsize = 0;
 372         i = segment / 2;
 373         eb = ebhead;
 374         if (!eb) {
 375             eb = *ebtail = nasm_zalloc(sizeof(*eb));
 376             eb->next = NULL;
 377             ebtail = &eb->next;
 378         }
 379         while (i > EXT_BLKSIZ) {
 380             if (eb && eb->next)
 381                 eb = eb->next;
 382             else {
 383                 eb = *ebtail = nasm_zalloc(sizeof(*eb));
 384                 eb->next = NULL;
 385                 ebtail = &eb->next;
 386             }
 387             i -= EXT_BLKSIZ;
 388         }
 389         eb->index[i] = externals++;
 390     }
 391
 392 }
 393
 394 /*
 395  * Put data out
 396  */
 397 static void ieee_out(int32_t segto, const void *data,
 398                      enum out_type type, uint64_t size,
 399                      int32_t segment, int32_t wrt)
 400 {
 401     const uint8_t *ucdata;
 402     int32_t ldata;
 403     struct ieeeSection *seg;
 404
 405     /*
 406      * handle absolute-assembly (structure definitions)
 407      */
 408     if (segto == NO_SEG) {
 409         if (type != OUT_RESERVE)
 410             nasm_error(ERR_NONFATAL, "attempt to assemble code in [ABSOLUTE]"
 411                   " space");
 412         return;
 413     }
 414
 415     /*
 416      * If `any_segs' is still false, we must define a default
 417      * segment.
 418      */
 419     if (!any_segs) {
 420         int tempint;            /* ignored */
 421         if (segto != ieee_segment("__NASMDEFSEG", 2, &tempint))
 422             nasm_error(ERR_PANIC, "strange segment conditions in IEEE driver");
 423     }
 424
 425     /*
 426      * Find the segment we are targetting.
 427      */
 428     for (seg = seghead; seg; seg = seg->next)
 429         if (seg->index == segto)
 430             break;
 431     if (!seg)
 432         nasm_error(ERR_PANIC, "code directed to nonexistent segment?");
 433
 434     if (type == OUT_RAWDATA) {
 435         ucdata = data;
 436         while (size--)
 437             ieee_write_byte(seg, *ucdata++);
 438     } else if (type == OUT_ADDRESS || type == OUT_REL2ADR ||
 439                type == OUT_REL4ADR) {
 440         if (segment == NO_SEG && type != OUT_ADDRESS)
 441             nasm_error(ERR_NONFATAL, "relative call to absolute address not"
 442                   " supported by IEEE format");
 443         ldata = *(int64_t *)data;
 444         if (type == OUT_REL2ADR)
 445             ldata += (size - 2);
 446         if (type == OUT_REL4ADR)
 447             ldata += (size - 4);
 448         ieee_write_fixup(segment, wrt, seg, size, type, ldata);
 449         if (size == 2)
 450             ieee_write_word(seg, ldata);
 451         else
 452             ieee_write_dword(seg, ldata);
 453     } else if (type == OUT_RESERVE) {
 454         while (size--)
 455             ieee_write_byte(seg, 0);
 456     }
 457 }
 458
 459 static void ieee_data_new(struct ieeeSection *segto)
 460 {
 461
 462     if (!segto->data)
 463         segto->data = segto->datacurr =
 464             nasm_malloc(sizeof(*(segto->datacurr)));
 465     else
 466         segto->datacurr = segto->datacurr->next =
 467             nasm_malloc(sizeof(*(segto->datacurr)));
 468     segto->datacurr->next = NULL;
 469 }
 470
 471 /*
 472  * this routine is unalduterated bloatware.  I usually don't do this
 473  * but I might as well see what it is like on a harmless program.
 474  * If anyone wants to optimize this is a good canditate!
 475  */
 476 static void ieee_write_fixup(int32_t segment, int32_t wrt,
 477                              struct ieeeSection *segto, int size,
 478                              uint64_t realtype, int32_t offset)
 479 {
 480     struct ieeeSection *target;
 481     struct ieeeFixupp s;
 482
 483     /* Don't put a fixup for things NASM can calculate */
 484     if (wrt == NO_SEG && segment == NO_SEG)
 485         return;
 486
 487     s.ftype = -1;
 488     /* if it is a WRT offset */
 489     if (wrt != NO_SEG) {
 490         s.ftype = FT_WRT;
 491         s.addend = offset;
 492         if (wrt >= SEG_ABS)
 493             s.id1 = -(wrt - SEG_ABS);
 494         else {
 495             if (wrt % 2 && realtype != OUT_REL2ADR
 496                 && realtype != OUT_REL4ADR) {
 497                 wrt--;
 498
 499                 for (target = seghead; target; target = target->next)
 500                     if (target->index == wrt)
 501                         break;
 502                 if (target) {
 503                     s.id1 = target->ieee_index;
 504                     for (target = seghead; target; target = target->next)
 505                         if (target->index == segment)
 506                             break;
 507
 508                     if (target)
 509                         s.id2 = target->ieee_index;
 510                     else {
 511                         /*
 512                          * Now we assume the segment field is being used
 513                          * to hold an extern index
 514                          */
 515                         int32_t i = segment / 2;
 516                         struct ExtBack *eb = ebhead;
 517                         while (i > EXT_BLKSIZ) {
 518                             if (eb)
 519                                 eb = eb->next;
 520                             else
 521                                 break;
 522                             i -= EXT_BLKSIZ;
 523                         }
 524                         /* if we have an extern decide the type and make a record
 525                          */
 526                         if (eb) {
 527                             s.ftype = FT_EXTWRT;
 528                             s.addend = 0;
 529                             s.id2 = eb->index[i];
 530                         } else
 531                             nasm_error(ERR_NONFATAL,
 532                                   "Source of WRT must be an offset");
 533                     }
 534
 535                 } else
 536                     nasm_error(ERR_PANIC,
 537                           "unrecognised WRT value in ieee_write_fixup");
 538             } else
 539                 nasm_error(ERR_NONFATAL, "target of WRT must be a section ");
 540         }
 541         s.size = size;
 542         ieee_install_fixup(segto, &s);
 543         return;
 544     }
 545     /* Pure segment fixup ? */
 546     if (segment != NO_SEG) {
 547         s.ftype = FT_SEG;
 548         s.id1 = 0;
 549         if (segment >= SEG_ABS) {
 550             /* absolute far segment fixup */
 551             s.id1 = -(segment - ~SEG_ABS);
 552         } else if (segment % 2) {
 553             /* fixup to named segment */
 554             /* look it up */
 555             for (target = seghead; target; target = target->next)
 556                 if (target->index == segment - 1)
 557                     break;
 558             if (target)
 559                 s.id1 = target->ieee_index;
 560             else {
 561                 /*
 562                  * Now we assume the segment field is being used
 563                  * to hold an extern index
 564                  */
 565                 int32_t i = segment / 2;
 566                 struct ExtBack *eb = ebhead;
 567                 while (i > EXT_BLKSIZ) {
 568                     if (eb)
 569                         eb = eb->next;
 570                     else
 571                         break;
 572                     i -= EXT_BLKSIZ;
 573                 }
 574                 /* if we have an extern decide the type and make a record
 575                  */
 576                 if (eb) {
 577                     if (realtype == OUT_REL2ADR || realtype == OUT_REL4ADR) {
 578                         nasm_error(ERR_PANIC,
 579                               "Segment of a rel not supported in ieee_write_fixup");
 580                     } else {
 581                         /* If we want the segment */
 582                         s.ftype = FT_EXTSEG;
 583                         s.addend = 0;
 584                         s.id1 = eb->index[i];
 585                     }
 586
 587                 } else
 588                     /* If we get here the seg value doesn't make sense */
 589                     nasm_error(ERR_PANIC,
 590                           "unrecognised segment value in ieee_write_fixup");
 591             }
 592
 593         } else {
 594             /* Assume we are offsetting directly from a section
 595              * So look up the target segment
 596              */
 597             for (target = seghead; target; target = target->next)
 598                 if (target->index == segment)
 599                     break;
 600             if (target) {
 601                 if (realtype == OUT_REL2ADR || realtype == OUT_REL4ADR) {
 602                     /* PC rel to a known offset */
 603                     s.id1 = target->ieee_index;
 604                     s.ftype = FT_REL;
 605                     s.size = size;
 606                     s.addend = offset;
 607                 } else {
 608                     /* We were offsetting from a seg */
 609                     s.id1 = target->ieee_index;
 610                     s.ftype = FT_OFS;
 611                     s.size = size;
 612                     s.addend = offset;
 613                 }
 614             } else {
 615                 /*
 616                  * Now we assume the segment field is being used
 617                  * to hold an extern index
 618                  */
 619                 int32_t i = segment / 2;
 620                 struct ExtBack *eb = ebhead;
 621                 while (i > EXT_BLKSIZ) {
 622                     if (eb)
 623                         eb = eb->next;
 624                     else
 625                         break;
 626                     i -= EXT_BLKSIZ;
 627                 }
 628                 /* if we have an extern decide the type and make a record
 629                  */
 630                 if (eb) {
 631                     if (realtype == OUT_REL2ADR || realtype == OUT_REL4ADR) {
 632                         s.ftype = FT_EXTREL;
 633                         s.addend = 0;
 634                         s.id1 = eb->index[i];
 635                     } else {
 636                         /* else we want the external offset */
 637                         s.ftype = FT_EXT;
 638                         s.addend = 0;
 639                         s.id1 = eb->index[i];
 640                     }
 641
 642                 } else
 643                     /* If we get here the seg value doesn't make sense */
 644                     nasm_error(ERR_PANIC,
 645                           "unrecognised segment value in ieee_write_fixup");
 646             }
 647         }
 648         if (size != 2 && s.ftype == FT_SEG)
 649             nasm_error(ERR_NONFATAL, "IEEE format can only handle 2-byte"
 650                   " segment base references");
 651         s.size = size;
 652         ieee_install_fixup(segto, &s);
 653         return;
 654     }
 655     /* should never get here */
 656 }
 657 static void ieee_install_fixup(struct ieeeSection *seg,
 658                                struct ieeeFixupp *fix)
 659 {
 660     struct ieeeFixupp *f;
 661     f = nasm_malloc(sizeof(struct ieeeFixupp));
 662     memcpy(f, fix, sizeof(struct ieeeFixupp));
 663     f->offset = seg->currentpos;
 664     seg->currentpos += fix->size;
 665     f->next = NULL;
 666     if (seg->fptr)
 667         seg->flptr = seg->flptr->next = f;
 668     else
 669         seg->fptr = seg->flptr = f;
 670
 671 }
 672
 673 /*
 674  * segment registry
 675  */
 676 static int32_t ieee_segment(char *name, int pass, int *bits)
 677 {
 678     /*
 679      * We call the label manager here to define a name for the new
 680      * segment, and when our _own_ label-definition stub gets
 681      * called in return, it should register the new segment name
 682      * using the pointer it gets passed. That way we save memory,
 683      * by sponging off the label manager.
 684      */
 685     if (!name) {
 686         *bits = 16;
 687         if (!any_segs)
 688             return 0;
 689         return seghead->index;
 690     } else {
 691         struct ieeeSection *seg;
 692         int ieee_idx, attrs;
 693         bool rn_error;
 694         char *p;
 695
 696         /*
 697          * Look for segment attributes.
 698          */
 699         attrs = 0;
 700         while (*name == '.')
 701             name++;             /* hack, but a documented one */
 702         p = name;
 703         while (*p && !nasm_isspace(*p))
 704             p++;
 705         if (*p) {
 706             *p++ = '\0';
 707             while (*p && nasm_isspace(*p))
 708                 *p++ = '\0';
 709         }
 710         while (*p) {
 711             while (*p && !nasm_isspace(*p))
 712                 p++;
 713             if (*p) {
 714                 *p++ = '\0';
 715                 while (*p && nasm_isspace(*p))
 716                     *p++ = '\0';
 717             }
 718
 719             attrs++;
 720         }
 721
 722         ieee_idx = 1;
 723         for (seg = seghead; seg; seg = seg->next) {
 724             ieee_idx++;
 725             if (!strcmp(seg->name, name)) {
 726                 if (attrs > 0 && pass == 1)
 727                     nasm_error(ERR_WARNING, "segment attributes specified on"
 728                           " redeclaration of segment: ignoring");
 729                 if (seg->use32)
 730                     *bits = 32;
 731                 else
 732                     *bits = 16;
 733                 return seg->index;
 734             }
 735         }
 736
 737         *segtail = seg = nasm_malloc(sizeof(*seg));
 738         seg->next = NULL;
 739         segtail = &seg->next;
 740         seg->index = seg_alloc();
 741         seg->ieee_index = ieee_idx;
 742         any_segs = true;
 743         seg->name = NULL;
 744         seg->currentpos = 0;
 745         seg->align = 1;         /* default */
 746         seg->use32 = *bits == 32;       /* default to user spec */
 747         seg->combine = CMB_PUBLIC;      /* default */
 748         seg->pubhead = NULL;
 749         seg->pubtail = &seg->pubhead;
 750         seg->data = NULL;
 751         seg->fptr = NULL;
 752         seg->lochead = NULL;
 753         seg->loctail = &seg->lochead;
 754
 755         /*
 756          * Process the segment attributes.
 757          */
 758         p = name;
 759         while (attrs--) {
 760             p += strlen(p);
 761             while (!*p)
 762                 p++;
 763
 764             /*
 765              * `p' contains a segment attribute.
 766              */
 767             if (!nasm_stricmp(p, "private"))
 768                 seg->combine = CMB_PRIVATE;
 769             else if (!nasm_stricmp(p, "public"))
 770                 seg->combine = CMB_PUBLIC;
 771             else if (!nasm_stricmp(p, "common"))
 772                 seg->combine = CMB_COMMON;
 773             else if (!nasm_stricmp(p, "use16"))
 774                 seg->use32 = false;
 775             else if (!nasm_stricmp(p, "use32"))
 776                 seg->use32 = true;
 777             else if (!nasm_strnicmp(p, "align=", 6)) {
 778                 seg->align = readnum(p + 6, &rn_error);
 779                 if (seg->align == 0)
 780                     seg->align = 1;
 781                 if (rn_error) {
 782                     seg->align = 1;
 783                     nasm_error(ERR_NONFATAL, "segment alignment should be"
 784                           " numeric");
 785                 }
 786                 switch ((int)seg->align) {
 787                 case 1:        /* BYTE */
 788                 case 2:        /* WORD */
 789                 case 4:        /* DWORD */
 790                 case 16:       /* PARA */
 791                 case 256:      /* PAGE */
 792                 case 8:
 793                 case 32:
 794                 case 64:
 795                 case 128:
 796                     break;
 797                 default:
 798                     nasm_error(ERR_NONFATAL, "invalid alignment value %d",
 799                           seg->align);
 800                     seg->align = 1;
 801                     break;
 802                 }
 803             } else if (!nasm_strnicmp(p, "absolute=", 9)) {
 804                 seg->align = SEG_ABS + readnum(p + 9, &rn_error);
 805                 if (rn_error)
 806                     nasm_error(ERR_NONFATAL, "argument to `absolute' segment"
 807                           " attribute should be numeric");
 808             }
 809         }
 810
 811         ieee_seg_needs_update = seg;
 812         if (seg->align >= SEG_ABS)
 813             define_label(name, NO_SEG, seg->align - SEG_ABS,
 814                          NULL, false, false);
 815         else
 816             define_label(name, seg->index + 1, 0L, NULL, false, false);
 817         ieee_seg_needs_update = NULL;
 818
 819         if (seg->use32)
 820             *bits = 32;
 821         else
 822             *bits = 16;
 823         return seg->index;
 824     }
 825 }
 826
 827 /*
 828  * directives supported
 829  */
 830 static int ieee_directive(enum directives directive, char *value, int pass)
 831 {
 832
 833     (void)value;
 834     (void)pass;
 835
 836     switch (directive) {
 837     case D_UPPERCASE:
 838         ieee_uppercase = true;
 839         return 1;
 840
 841     default:
 842         return 0;
 843     }
 844 }
 845
 846 static void ieee_sectalign(int32_t seg, unsigned int value)
 847 {
 848     struct ieeeSection *s;
 849
 850     list_for_each(s, seghead) {
 851         if (s->index == seg)
 852             break;
 853     }
 854
 855     /*
 856      * 256 is maximum there, note it may happen
 857      * that align is issued on "absolute" segment
 858      * it's fine since SEG_ABS > 256 and we never
 859      * get escape this test
 860      */
 861     if (!s || !is_power2(value) || value > 256)
 862         return;
 863
 864     if ((unsigned int)s->align < value)
 865         s->align = value;
 866 }
 867
 868 /*
 869  * Return segment data
 870  */
 871 static int32_t ieee_segbase(int32_t segment)
 872 {
 873     struct ieeeSection *seg;
 874
 875     /*
 876      * Find the segment in our list.
 877      */
 878     for (seg = seghead; seg; seg = seg->next)
 879         if (seg->index == segment - 1)
 880             break;
 881
 882     if (!seg)
 883         return segment;         /* not one of ours - leave it alone */
 884
 885     if (seg->align >= SEG_ABS)
 886         return seg->align;      /* absolute segment */
 887
 888     return segment;             /* no special treatment */
 889 }
 890
 891 /*
 892  * filename
 893  */
 894 static void ieee_filename(char *inname, char *outname)
 895 {
 896     strcpy(ieee_infile, inname);
 897     standard_extension(inname, outname, ".o");
 898 }
 899
 900 static void ieee_write_file(int debuginfo)
 901 {
 902     struct tm *thetime;
 903     time_t reltime;
 904     struct FileName *fn;
 905     struct ieeeSection *seg;
 906     struct ieeePublic *pub, *loc;
 907     struct ieeeExternal *ext;
 908     struct ieeeObjData *data;
 909     struct ieeeFixupp *fix;
 910     struct Array *arr;
 911     int i;
 912
 913     /*
 914      * Write the module header
 915      */
 916     ieee_putascii("MBFNASM,%02X%s.\n", strlen(ieee_infile), ieee_infile);
 917
 918     /*
 919      * Write the NASM boast comment.
 920      */
 921     ieee_putascii("CO0,%02X%s.\n", strlen(nasm_comment), nasm_comment);
 922
 923     /*
 924      * write processor-specific information
 925      */
 926     ieee_putascii("AD8,4,L.\n");
 927
 928     /*
 929      * date and time
 930      */
 931     time(&reltime);
 932     thetime = localtime(&reltime);
 933     ieee_putascii("DT%04d%02d%02d%02d%02d%02d.\n",
 934                   1900 + thetime->tm_year, thetime->tm_mon + 1,
 935                   thetime->tm_mday, thetime->tm_hour, thetime->tm_min,
 936                   thetime->tm_sec);
 937     /*
 938      * if debugging, dump file names
 939      */
 940     for (fn = fnhead; fn && debuginfo; fn = fn->next) {
 941         ieee_putascii("C0105,%02X%s.\n", strlen(fn->name), fn->name);
 942     }
 943
 944     ieee_putascii("CO101,07ENDHEAD.\n");
 945     /*
 946      * the standard doesn't specify when to put checksums,
 947      * we'll just do it periodically.
 948      */
 949     ieee_putcs(false);
 950
 951     /*
 952      * Write the section headers
 953      */
 954     seg = seghead;
 955     if (!debuginfo && !strcmp(seg->name, "??LINE"))
 956         seg = seg->next;
 957     while (seg) {
 958         char buf[256];
 959         char attrib;
 960         switch (seg->combine) {
 961         case CMB_PUBLIC:
 962         default:
 963             attrib = 'C';
 964             break;
 965         case CMB_PRIVATE:
 966             attrib = 'S';
 967             break;
 968         case CMB_COMMON:
 969             attrib = 'M';
 970             break;
 971         }
 972         ieee_unqualified_name(buf, seg->name);
 973         if (seg->align >= SEG_ABS) {
 974             ieee_putascii("ST%X,A,%02X%s.\n", seg->ieee_index,
 975                           strlen(buf), buf);
 976             ieee_putascii("ASL%X,%lX.\n", seg->ieee_index,
 977                           (seg->align - SEG_ABS) * 16);
 978         } else {
 979             ieee_putascii("ST%X,%c,%02X%s.\n", seg->ieee_index, attrib,
 980                           strlen(buf), buf);
 981             ieee_putascii("SA%X,%lX.\n", seg->ieee_index, seg->align);
 982             ieee_putascii("ASS%X,%X.\n", seg->ieee_index,
 983                           seg->currentpos);
 984         }
 985         seg = seg->next;
 986     }
 987     /*
 988      * write the start address if there is one
 989      */
 990     if (ieee_entry_seg) {
 991         for (seg = seghead; seg; seg = seg->next)
 992             if (seg->index == ieee_entry_seg)
 993                 break;
 994         if (!seg)
 995             nasm_error(ERR_PANIC, "Start address records are incorrect");
 996         else
 997             ieee_putascii("ASG,R%X,%lX,+.\n", seg->ieee_index,
 998                           ieee_entry_ofs);
 999     }
1000
1001     ieee_putcs(false);
1002     /*
1003      * Write the publics
1004      */
1005     i = 1;
1006     for (seg = seghead; seg; seg = seg->next) {
1007         for (pub = seg->pubhead; pub; pub = pub->next) {
1008             char buf[256];
1009             ieee_unqualified_name(buf, pub->name);
1010             ieee_putascii("NI%X,%02X%s.\n", i, strlen(buf), buf);
1011             if (pub->segment == -1)
1012                 ieee_putascii("ASI%X,R%X,%lX,+.\n", i, pub->index,
1013                               pub->offset);
1014             else
1015                 ieee_putascii("ASI%X,%lX,%lX,+.\n", i, pub->segment * 16,
1016                               pub->offset);
1017             if (debuginfo) {
1018                 if (pub->type >= 0x100)
1019                     ieee_putascii("ATI%X,T%X.\n", i, pub->type - 0x100);
1020                 else
1021                     ieee_putascii("ATI%X,%X.\n", i, pub->type);
1022             }
1023             i++;
1024         }
1025     }
1026     pub = fpubhead;
1027     i = 1;
1028     while (pub) {
1029         char buf[256];
1030         ieee_unqualified_name(buf, pub->name);
1031         ieee_putascii("NI%X,%02X%s.\n", i, strlen(buf), buf);
1032         if (pub->segment == -1)
1033             ieee_putascii("ASI%X,R%X,%lX,+.\n", i, pub->index,
1034                           pub->offset);
1035         else
1036             ieee_putascii("ASI%X,%lX,%lX,+.\n", i, pub->segment * 16,
1037                           pub->offset);
1038         if (debuginfo) {
1039             if (pub->type >= 0x100)
1040                 ieee_putascii("ATI%X,T%X.\n", i, pub->type - 0x100);
1041             else
1042                 ieee_putascii("ATI%X,%X.\n", i, pub->type);
1043         }
1044         i++;
1045         pub = pub->next;
1046     }
1047     /*
1048      * Write the externals
1049      */
1050     ext = exthead;
1051     i = 1;
1052     while (ext) {
1053         char buf[256];
1054         ieee_unqualified_name(buf, ext->name);
1055         ieee_putascii("NX%X,%02X%s.\n", i++, strlen(buf), buf);
1056         ext = ext->next;
1057     }
1058     ieee_putcs(false);
1059
1060     /*
1061      * IEEE doesn't have a standard pass break record
1062      * so use the ladsoft variant
1063      */
1064     ieee_putascii("CO100,06ENDSYM.\n");
1065
1066     /*
1067      * now put types
1068      */
1069     i = ARRAY_BOT;
1070     for (arr = arrhead; arr && debuginfo; arr = arr->next) {
1071         ieee_putascii("TY%X,20,%X,%lX.\n", i++, arr->basetype,
1072                       arr->size);
1073     }
1074     /*
1075      * now put locals
1076      */
1077     i = 1;
1078     for (seg = seghead; seg && debuginfo; seg = seg->next) {
1079         for (loc = seg->lochead; loc; loc = loc->next) {
1080             char buf[256];
1081             ieee_unqualified_name(buf, loc->name);
1082             ieee_putascii("NN%X,%02X%s.\n", i, strlen(buf), buf);
1083             if (loc->segment == -1)
1084                 ieee_putascii("ASN%X,R%X,%lX,+.\n", i, loc->index,
1085                               loc->offset);
1086             else
1087                 ieee_putascii("ASN%X,%lX,%lX,+.\n", i, loc->segment * 16,
1088                               loc->offset);
1089             if (debuginfo) {
1090                 if (loc->type >= 0x100)
1091                     ieee_putascii("ATN%X,T%X.\n", i, loc->type - 0x100);
1092                 else
1093                     ieee_putascii("ATN%X,%X.\n", i, loc->type);
1094             }
1095             i++;
1096         }
1097     }
1098
1099     /*
1100      *  put out section data;
1101      */
1102     seg = seghead;
1103     if (!debuginfo && !strcmp(seg->name, "??LINE"))
1104         seg = seg->next;
1105     while (seg) {
1106         if (seg->currentpos) {
1107             int32_t size, org = 0;
1108             data = seg->data;
1109             ieee_putascii("SB%X.\n", seg->ieee_index);
1110             fix = seg->fptr;
1111             while (fix) {
1112                 size = HUNKSIZE - (org % HUNKSIZE);
1113                 size =
1114                     size + org >
1115                     seg->currentpos ? seg->currentpos - org : size;
1116                 size = fix->offset - org > size ? size : fix->offset - org;
1117                 org = ieee_putld(org, org + size, data->data);
1118                 if (org % HUNKSIZE == 0)
1119                     data = data->next;
1120                 if (org == fix->offset) {
1121                     org += ieee_putlr(fix);
1122                     fix = fix->next;
1123                 }
1124             }
1125             while (org < seg->currentpos && data) {
1126                 size =
1127                     seg->currentpos - org >
1128                     HUNKSIZE ? HUNKSIZE : seg->currentpos - org;
1129                 org = ieee_putld(org, org + size, data->data);
1130                 data = data->next;
1131             }
1132             ieee_putcs(false);
1133
1134         }
1135         seg = seg->next;
1136     }
1137     /*
1138      * module end record
1139      */
1140     ieee_putascii("ME.\n");
1141 }
1142
1143 static void ieee_write_byte(struct ieeeSection *seg, int data)
1144 {
1145     int temp;
1146     if (!(temp = seg->currentpos++ % HUNKSIZE))
1147         ieee_data_new(seg);
1148     seg->datacurr->data[temp] = data;
1149 }
1150
1151 static void ieee_write_word(struct ieeeSection *seg, int data)
1152 {
1153     ieee_write_byte(seg, data & 0xFF);
1154     ieee_write_byte(seg, (data >> 8) & 0xFF);
1155 }
1156
1157 static void ieee_write_dword(struct ieeeSection *seg, int32_t data)
1158 {
1159     ieee_write_byte(seg, data & 0xFF);
1160     ieee_write_byte(seg, (data >> 8) & 0xFF);
1161     ieee_write_byte(seg, (data >> 16) & 0xFF);
1162     ieee_write_byte(seg, (data >> 24) & 0xFF);
1163 }
1164 static void ieee_putascii(char *format, ...)
1165 {
1166     char buffer[256];
1167     int i, l;
1168     va_list ap;
1169
1170     va_start(ap, format);
1171     vsnprintf(buffer, sizeof(buffer), format, ap);
1172     l = strlen(buffer);
1173     for (i = 0; i < l; i++)
1174         if ((uint8_t)buffer[i] > 31)
1175             checksum += buffer[i];
1176     va_end(ap);
1177     fputs(buffer, ofile);
1178 }
1179
1180 /*
1181  * put out a checksum record */
1182 static void ieee_putcs(int toclear)
1183 {
1184     if (toclear) {
1185         ieee_putascii("CS.\n");
1186     } else {
1187         checksum += 'C';
1188         checksum += 'S';
1189         ieee_putascii("CS%02X.\n", checksum & 127);
1190     }
1191     checksum = 0;
1192 }
1193
1194 static int32_t ieee_putld(int32_t start, int32_t end, uint8_t *buf)
1195 {
1196     int32_t val;
1197     if (start == end)
1198         return (start);
1199     val = start % HUNKSIZE;
1200     /* fill up multiple lines */
1201     while (end - start >= LDPERLINE) {
1202         int i;
1203         ieee_putascii("LD");
1204         for (i = 0; i < LDPERLINE; i++) {
1205             ieee_putascii("%02X", buf[val++]);
1206             start++;
1207         }
1208         ieee_putascii(".\n");
1209     }
1210     /* if no partial lines */
1211     if (start == end)
1212         return (start);
1213     /* make a partial line */
1214     ieee_putascii("LD");
1215     while (start < end) {
1216         ieee_putascii("%02X", buf[val++]);
1217         start++;
1218     }
1219     ieee_putascii(".\n");
1220     return (start);
1221 }
1222 static int32_t ieee_putlr(struct ieeeFixupp *p)
1223 {
1224 /*
1225  * To deal with the vagaries of segmentation the LADsoft linker
1226  * defines two types of segments: absolute and virtual.  Note that
1227  * 'absolute' in this context is a different thing from the IEEE
1228  * definition of an absolute segment type, which is also supported. If a
1229  * sement is linked in virtual mode the low limit (L-var) is
1230  * subtracted from each R,X, and P variable which appears in an
1231  * expression, so that we can have relative offsets.  Meanwhile
1232  * in the ABSOLUTE mode this subtraction is not done and
1233  * so we can use absolute offsets from 0.  In the LADsoft linker
1234  * this configuration is not done in the assemblker source but in
1235  * a source the linker reads.  Generally this type of thing only
1236  * becomes an issue if real mode code is used.  A pure 32-bit linker could
1237  * get away without defining the virtual mode...
1238  */
1239     char buf[40];
1240     int32_t size = p->size;
1241     switch (p->ftype) {
1242     case FT_SEG:
1243         if (p->id1 < 0)
1244             sprintf(buf, "%"PRIX32"", -p->id1);
1245         else
1246             sprintf(buf, "L%"PRIX32",10,/", p->id1);
1247         break;
1248     case FT_OFS:
1249         sprintf(buf, "R%"PRIX32",%"PRIX32",+", p->id1, p->addend);
1250         break;
1251     case FT_REL:
1252         sprintf(buf, "R%"PRIX32",%"PRIX32",+,P,-,%X,-", p->id1, p->addend, p->size);
1253         break;
1254
1255     case FT_WRT:
1256         if (p->id2 < 0)
1257             sprintf(buf, "R%"PRIX32",%"PRIX32",+,L%"PRIX32",+,%"PRIX32",-", p->id2, p->addend,
1258                     p->id2, -p->id1 * 16);
1259         else
1260             sprintf(buf, "R%"PRIX32",%"PRIX32",+,L%"PRIX32",+,L%"PRIX32",-", p->id2, p->addend,
1261                     p->id2, p->id1);
1262         break;
1263     case FT_EXT:
1264         sprintf(buf, "X%"PRIX32"", p->id1);
1265         break;
1266     case FT_EXTREL:
1267         sprintf(buf, "X%"PRIX32",P,-,%"PRIX32",-", p->id1, size);
1268         break;
1269     case FT_EXTSEG:
1270         /* We needed a non-ieee hack here.
1271          * We introduce the Y variable, which is the low
1272          * limit of the native segment the extern resides in
1273          */
1274         sprintf(buf, "Y%"PRIX32",10,/", p->id1);
1275         break;
1276     case FT_EXTWRT:
1277         if (p->id2 < 0)
1278             sprintf(buf, "X%"PRIX32",Y%"PRIX32",+,%"PRIX32",-", p->id2, p->id2,
1279                     -p->id1 * 16);
1280         else
1281             sprintf(buf, "X%"PRIX32",Y%"PRIX32",+,L%"PRIX32",-", p->id2, p->id2, p->id1);
1282         break;
1283     }
1284     ieee_putascii("LR(%s,%"PRIX32").\n", buf, size);
1285
1286     return (size);
1287 }
1288
1289 /* Dump all segment data (text and fixups )*/
1290
1291 static void ieee_unqualified_name(char *dest, char *source)
1292 {
1293     if (ieee_uppercase) {
1294         while (*source)
1295             *dest++ = toupper(*source++);
1296         *dest = 0;
1297     } else
1298         strcpy(dest, source);
1299 }
1300 void dbgls_init(void)
1301 {
1302     int tempint;
1303
1304     fnhead = NULL;
1305     fntail = &fnhead;
1306     arrindex = ARRAY_BOT;
1307     arrhead = NULL;
1308     arrtail = &arrhead;
1309     ieee_segment("??LINE", 2, &tempint);
1310     any_segs = false;
1311 }
1312 static void dbgls_cleanup(void)
1313 {
1314     struct ieeeSection *segtmp;
1315     while (fnhead) {
1316         struct FileName *fntemp = fnhead;
1317         fnhead = fnhead->next;
1318         nasm_free(fntemp->name);
1319         nasm_free(fntemp);
1320     }
1321     for (segtmp = seghead; segtmp; segtmp = segtmp->next) {
1322         while (segtmp->lochead) {
1323             struct ieeePublic *loctmp = segtmp->lochead;
1324             segtmp->lochead = loctmp->next;
1325             nasm_free(loctmp->name);
1326             nasm_free(loctmp);
1327         }
1328     }
1329     while (arrhead) {
1330         struct Array *arrtmp = arrhead;
1331         arrhead = arrhead->next;
1332         nasm_free(arrtmp);
1333     }
1334 }
1335
1336 /*
1337  * because this routine is not bracketed in
1338  * the main program, this routine will be called even if there
1339  * is no request for debug info
1340  * so, we have to make sure the ??LINE segment is avaialbe
1341  * as the first segment when this debug format is selected
1342  */
1343 static void dbgls_linnum(const char *lnfname, int32_t lineno, int32_t segto)
1344 {
1345     struct FileName *fn;
1346     struct ieeeSection *seg;
1347     int i = 0;
1348     if (segto == NO_SEG)
1349         return;
1350
1351     /*
1352      * If `any_segs' is still false, we must define a default
1353      * segment.
1354      */
1355     if (!any_segs) {
1356         int tempint;            /* ignored */
1357         if (segto != ieee_segment("__NASMDEFSEG", 2, &tempint))
1358             nasm_error(ERR_PANIC, "strange segment conditions in OBJ driver");
1359     }
1360
1361     /*
1362      * Find the segment we are targetting.
1363      */
1364     for (seg = seghead; seg; seg = seg->next)
1365         if (seg->index == segto)
1366             break;
1367     if (!seg)
1368         nasm_error(ERR_PANIC, "lineno directed to nonexistent segment?");
1369
1370     for (fn = fnhead; fn; fn = fn->next) {
1371         if (!nasm_stricmp(lnfname, fn->name))
1372             break;
1373         i++;
1374     }
1375     if (!fn) {
1376         fn = nasm_malloc(sizeof(*fn));
1377         fn->name = nasm_malloc(strlen(lnfname) + 1);
1378         fn->index = i;
1379         strcpy(fn->name, lnfname);
1380         fn->next = NULL;
1381         *fntail = fn;
1382         fntail = &fn->next;
1383     }
1384     ieee_write_byte(seghead, fn->index);
1385     ieee_write_word(seghead, lineno);
1386     ieee_write_fixup(segto, NO_SEG, seghead, 4, OUT_ADDRESS,
1387                      seg->currentpos);
1388
1389 }
1390 static void dbgls_deflabel(char *name, int32_t segment,
1391                            int64_t offset, int is_global, char *special)
1392 {
1393     struct ieeeSection *seg;
1394
1395     /* Keep compiler from warning about special */
1396     (void)special;
1397
1398     /*
1399      * If it's a special-retry from pass two, discard it.
1400      */
1401     if (is_global == 3)
1402         return;
1403
1404     /*
1405      * First check for the double-period, signifying something
1406      * unusual.
1407      */
1408     if (name[0] == '.' && name[1] == '.' && name[2] != '@') {
1409         return;
1410     }
1411
1412     /*
1413      * Case (i):
1414      */
1415     if (ieee_seg_needs_update)
1416         return;
1417     if (segment < SEG_ABS && segment != NO_SEG && segment % 2)
1418         return;
1419
1420     if (segment >= SEG_ABS || segment == NO_SEG) {
1421         return;
1422     }
1423
1424     /*
1425      * If `any_segs' is still false, we might need to define a
1426      * default segment, if they're trying to declare a label in
1427      * `first_seg'.  But the label should exist due to a prior
1428      * call to ieee_deflabel so we can skip that.
1429      */
1430
1431     for (seg = seghead; seg; seg = seg->next)
1432         if (seg->index == segment) {
1433             struct ieeePublic *loc;
1434             /*
1435              * Case (ii). Maybe MODPUB someday?
1436              */
1437             if (!is_global) {
1438                 last_defined = loc = nasm_malloc(sizeof(*loc));
1439                 *seg->loctail = loc;
1440                 seg->loctail = &loc->next;
1441                 loc->next = NULL;
1442                 loc->name = nasm_strdup(name);
1443                 loc->offset = offset;
1444                 loc->segment = -1;
1445                 loc->index = seg->ieee_index;
1446             }
1447         }
1448 }
1449 static void dbgls_typevalue(int32_t type)
1450 {
1451     int elem = TYM_ELEMENTS(type);
1452     type = TYM_TYPE(type);
1453
1454     if (!last_defined)
1455         return;
1456
1457     switch (type) {
1458     case TY_BYTE:
1459         last_defined->type = 1; /* uint8_t */
1460         break;
1461     case TY_WORD:
1462         last_defined->type = 3; /* unsigned word */
1463         break;
1464     case TY_DWORD:
1465         last_defined->type = 5; /* unsigned dword */
1466         break;
1467     case TY_FLOAT:
1468         last_defined->type = 9; /* float */
1469         break;
1470     case TY_QWORD:
1471         last_defined->type = 10;        /* qword */
1472         break;
1473     case TY_TBYTE:
1474         last_defined->type = 11;        /* TBYTE */
1475         break;
1476     default:
1477         last_defined->type = 0x10;      /* near label */
1478         break;
1479     }
1480
1481     if (elem > 1) {
1482         struct Array *arrtmp = nasm_malloc(sizeof(*arrtmp));
1483         int vtype = last_defined->type;
1484         arrtmp->size = elem;
1485         arrtmp->basetype = vtype;
1486         arrtmp->next = NULL;
1487         last_defined->type = arrindex++ + 0x100;
1488         *arrtail = arrtmp;
1489         arrtail = &(arrtmp->next);
1490     }
1491     last_defined = NULL;
1492 }
1493 static void dbgls_output(int output_type, void *param)
1494 {
1495     (void)output_type;
1496     (void)param;
1497 }
1498 static struct dfmt ladsoft_debug_form = {
1499     "LADsoft Debug Records",
1500     "ladsoft",
1501     dbgls_init,
1502     dbgls_linnum,
1503     dbgls_deflabel,
1504     null_debug_directive,
1505     dbgls_typevalue,
1506     dbgls_output,
1507     dbgls_cleanup,
1508 };
1509 static struct dfmt *ladsoft_debug_arr[3] = {
1510     &ladsoft_debug_form,
1511     &null_debug_form,
1512     NULL
1513 };
1514 struct ofmt of_ieee = {
1515     "IEEE-695 (LADsoft variant) object file format",
1516     "ieee",
1517     OFMT_TEXT,
1518     ladsoft_debug_arr,
1519     &ladsoft_debug_form,
1520     NULL,
1521     ieee_init,
1522     ieee_set_info,
1523     ieee_out,
1524     ieee_deflabel,
1525     ieee_segment,
1526     ieee_sectalign,
1527     ieee_segbase,
1528     ieee_directive,
1529     ieee_filename,
1530     ieee_cleanup
1531 };
1532
1533 #endif                          /* OF_IEEE */