bfd/tekhex.c

   1 /* BFD backend for Extended Tektronix Hex Format  objects.
   2    Copyright (C) 1992-2025 Free Software Foundation, Inc.
   3    Written by Steve Chamberlain of Cygnus Support <sac@cygnus.com>.
   4
   5    This file is part of BFD, the Binary File Descriptor library.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  20    MA 02110-1301, USA.  */
  21
  22
  23 /* SUBSECTION
  24         Tektronix Hex Format handling
  25
  26    DESCRIPTION
  27
  28         Tek Hex records can hold symbols and data, but not
  29         relocations. Their main application is communication with
  30         devices like PROM programmers and ICE equipment.
  31
  32         It seems that the sections are described as being really big,
  33         the example I have says that the text section is 0..ffffffff.
  34         BFD would barf with this, many apps would try to alloc 4GB to
  35         read in the file.
  36
  37         Tex Hex may contain many sections, but the data which comes in
  38         has no tag saying which section it belongs to, so we create
  39         one section for each block of data, called "blknnnn" which we
  40         stick all the data into.
  41
  42         TekHex may come out of order and there is no header, so an
  43         initial scan is required  to discover the minimum and maximum
  44         addresses used to create the vma and size of the sections we
  45         create.
  46         We read in the data into pages of CHUNK_MASK+1 size and read
  47         them out from that whenever we need to.
  48
  49         Any number of sections may be created for output, we save them
  50         up and output them when it's time to close the bfd.
  51
  52         A TekHex record looks like:
  53   EXAMPLE
  54         %<block length><type><checksum><stuff><cr>
  55
  56   DESCRIPTION
  57         Where
  58         o length
  59         is the number of bytes in the record not including the % sign.
  60         o type
  61         is one of:
  62         3) symbol record
  63         6) data record
  64         8) termination record
  65
  66   The data can come out of order, and may be discontigous. This is a
  67   serial protocol, so big files are unlikely, so we keep a list of 8k chunks.  */
  68
  69 #include "sysdep.h"
  70 #include "bfd.h"
  71 #include "libbfd.h"
  72 #include "libiberty.h"
  73
  74 typedef struct
  75 {
  76   bfd_vma low;
  77   bfd_vma high;
  78 } addr_range_type;
  79
  80 typedef struct tekhex_symbol_struct
  81 {
  82   asymbol symbol;
  83   struct tekhex_symbol_struct *prev;
  84 } tekhex_symbol_type;
  85
  86 static const char digs[] = "0123456789ABCDEF";
  87
  88 static char sum_block[256];
  89
  90 #define NOT_HEX      20
  91 #define NIBBLE(x)    hex_value(x)
  92 #define HEX(buffer) ((NIBBLE ((buffer)[0]) << 4) + NIBBLE ((buffer)[1]))
  93 #define ISHEX(x)    hex_p(x)
  94 #define TOHEX(d, x) \
  95   (d)[1] = digs[(x) & 0xf]; \
  96   (d)[0] = digs[((x)>>4)&0xf];
  97
  98 /* Here's an example
  99    %3A6C6480004E56FFFC4E717063B0AEFFFC6D0652AEFFFC60F24E5E4E75
 100    %1B3709T_SEGMENT1108FFFFFFFF
 101    %2B3AB9T_SEGMENT7Dgcc_compiled$1087hello$c10
 102    %373829T_SEGMENT80int$t1$r1$$214741080char$t2$r2$0$12710
 103    %373769T_SEGMENT80long$int$t3$r1$$1080unsigned$int$t4$10
 104    %373CA9T_SEGMENT80long$unsigned$in1080short$int$t6$r1$10
 105    %373049T_SEGMENT80long$long$int$t71080short$unsigned$i10
 106    %373A29T_SEGMENT80long$long$unsign1080signed$char$t10$10
 107    %373D69T_SEGMENT80unsigned$char$t11080float$t12$r1$4$010
 108    %373D19T_SEGMENT80double$t13$r1$8$1080long$double$t14$10
 109    %2734D9T_SEGMENT8Bvoid$t15$151035_main10
 110    %2F3CA9T_SEGMENT81$1081$1681$1E81$21487main$F110
 111    %2832F9T_SEGMENT83i$18FFFFFFFC81$1481$214
 112    %07 8 10 10
 113
 114    explanation:
 115    %3A6C6480004E56FFFC4E717063B0AEFFFC6D0652AEFFFC60F24E5E4E75
 116     ^ ^^ ^     ^-data
 117     | || +------ 4 char integer 0x8000
 118     | |+-------- checksum
 119     | +--------- type 6 (data record)
 120     +----------- length 3a chars
 121    <---------------------- 3a (58 chars) ------------------->
 122
 123    %1B3709T_SEGMENT1108FFFFFFFF
 124          ^         ^^ ^- 8 character integer 0xffffffff
 125          |         |+-   1 character integer 0
 126          |         +--   type 1 symbol (section definition)
 127          +------------   9 char symbol T_SEGMENT
 128
 129    %2B3AB9T_SEGMENT7Dgcc_compiled$1087hello$c10
 130    %373829T_SEGMENT80int$t1$r1$$214741080char$t2$r2$0$12710
 131    %373769T_SEGMENT80long$int$t3$r1$$1080unsigned$int$t4$10
 132    %373CA9T_SEGMENT80long$unsigned$in1080short$int$t6$r1$10
 133    %373049T_SEGMENT80long$long$int$t71080short$unsigned$i10
 134    %373A29T_SEGMENT80long$long$unsign1080signed$char$t10$10
 135    %373D69T_SEGMENT80unsigned$char$t11080float$t12$r1$4$010
 136    %373D19T_SEGMENT80double$t13$r1$8$1080long$double$t14$10
 137    %2734D9T_SEGMENT8Bvoid$t15$151035_main10
 138    %2F3CA9T_SEGMENT81$1081$1681$1E81$21487main$F110
 139    %2832F9T_SEGMENT83i$18FFFFFFFC81$1481$214
 140    %0781010
 141
 142    Turns into
 143    sac@thepub$ ./objdump -dx -m m68k f
 144
 145    f:     file format tekhex
 146    -----x--- 9/55728 -134219416 Sep 29 15:13 1995 f
 147    architecture: UNKNOWN!, flags 0x00000010:
 148    HAS_SYMS
 149    start address 0x00000000
 150    SECTION 0 [D00000000]        : size 00020000 vma 00000000 align 2**0
 151    ALLOC, LOAD
 152    SECTION 1 [D00008000]        : size 00002001 vma 00008000 align 2**0
 153
 154    SECTION 2 [T_SEGMENT]        : size ffffffff vma 00000000 align 2**0
 155
 156    SYMBOL TABLE:
 157    00000000  g       T_SEGMENT gcc_compiled$
 158    00000000  g       T_SEGMENT hello$c
 159    00000000  g       T_SEGMENT int$t1$r1$$21474
 160    00000000  g       T_SEGMENT char$t2$r2$0$127
 161    00000000  g       T_SEGMENT long$int$t3$r1$$
 162    00000000  g       T_SEGMENT unsigned$int$t4$
 163    00000000  g       T_SEGMENT long$unsigned$in
 164    00000000  g       T_SEGMENT short$int$t6$r1$
 165    00000000  g       T_SEGMENT long$long$int$t7
 166    00000000  g       T_SEGMENT short$unsigned$i
 167    00000000  g       T_SEGMENT long$long$unsign
 168    00000000  g       T_SEGMENT signed$char$t10$
 169    00000000  g       T_SEGMENT unsigned$char$t1
 170    00000000  g       T_SEGMENT float$t12$r1$4$0
 171    00000000  g       T_SEGMENT double$t13$r1$8$
 172    00000000  g       T_SEGMENT long$double$t14$
 173    00000000  g       T_SEGMENT void$t15$15
 174    00000000  g       T_SEGMENT _main
 175    00000000  g       T_SEGMENT $
 176    00000000  g       T_SEGMENT $
 177    00000000  g       T_SEGMENT $
 178    00000010  g       T_SEGMENT $
 179    00000000  g       T_SEGMENT main$F1
 180    fcffffff  g       T_SEGMENT i$1
 181    00000000  g       T_SEGMENT $
 182    00000010  g       T_SEGMENT $
 183
 184    RELOCATION RECORDS FOR [D00000000]: (none)
 185
 186    RELOCATION RECORDS FOR [D00008000]: (none)
 187
 188    RELOCATION RECORDS FOR [T_SEGMENT]: (none)
 189
 190    Disassembly of section D00000000:
 191    ...
 192    00008000 ($+)7ff0 linkw fp,#-4
 193    00008004 ($+)7ff4 nop
 194    00008006 ($+)7ff6 movel #99,d0
 195    00008008 ($+)7ff8 cmpl fp@(-4),d0
 196    0000800c ($+)7ffc blts 00008014 ($+)8004
 197    0000800e ($+)7ffe addql #1,fp@(-4)
 198    00008012 ($+)8002 bras 00008006 ($+)7ff6
 199    00008014 ($+)8004 unlk fp
 200    00008016 ($+)8006 rts
 201    ...  */
 202
 203 static void
 204 tekhex_init (void)
 205 {
 206   unsigned int i;
 207   static bool inited = false;
 208   int val;
 209
 210   if (! inited)
 211     {
 212       inited = true;
 213       hex_init ();
 214       val = 0;
 215       for (i = 0; i < 10; i++)
 216         sum_block[i + '0'] = val++;
 217
 218       for (i = 'A'; i <= 'Z'; i++)
 219         sum_block[i] = val++;
 220
 221       sum_block['$'] = val++;
 222       sum_block['%'] = val++;
 223       sum_block['.'] = val++;
 224       sum_block['_'] = val++;
 225       for (i = 'a'; i <= 'z'; i++)
 226         sum_block[i] = val++;
 227     }
 228 }
 229
 230 /* The maximum number of bytes on a line is FF.  */
 231 #define MAXCHUNK 0xff
 232 /* The number of bytes we fit onto a line on output.  */
 233 #define CHUNK 21
 234
 235 /* We cannot output our tekhexords as we see them, we have to glue them
 236    together, this is done in this structure : */
 237
 238 struct tekhex_data_list_struct
 239 {
 240   unsigned char *data;
 241   bfd_vma where;
 242   bfd_size_type size;
 243   struct tekhex_data_list_struct *next;
 244
 245 };
 246 typedef struct tekhex_data_list_struct tekhex_data_list_type;
 247
 248 #define CHUNK_MASK 0x1fff
 249 #define CHUNK_SPAN 32
 250
 251 struct data_struct
 252 {
 253   unsigned char chunk_data[CHUNK_MASK + 1];
 254   unsigned char chunk_init[(CHUNK_MASK + 1 + CHUNK_SPAN - 1) / CHUNK_SPAN];
 255   bfd_vma vma;
 256   struct data_struct *next;
 257 };
 258
 259 typedef struct tekhex_data_struct
 260 {
 261   tekhex_data_list_type *head;
 262   unsigned int type;
 263   struct tekhex_symbol_struct *symbols;
 264   struct data_struct *data;
 265 } tdata_type;
 266
 267 #define enda(x) (x->vma + x->size)
 268
 269 static bool
 270 getvalue (char **srcp, bfd_vma *valuep, char * endp)
 271 {
 272   char *src = *srcp;
 273   bfd_vma value = 0;
 274   unsigned int len;
 275
 276   if (src >= endp)
 277     return false;
 278
 279   if (!ISHEX (*src))
 280     return false;
 281
 282   len = hex_value (*src++);
 283   if (len == 0)
 284     len = 16;
 285   while (len-- && src < endp)
 286     {
 287       if (!ISHEX (*src))
 288         return false;
 289       value = value << 4 | hex_value (*src++);
 290     }
 291
 292   *srcp = src;
 293   *valuep = value;
 294   return len == -1U;
 295 }
 296
 297 static bool
 298 getsym (char *dstp, char **srcp, unsigned int *lenp, char * endp)
 299 {
 300   char *src = *srcp;
 301   unsigned int i;
 302   unsigned int len;
 303
 304   if (!ISHEX (*src))
 305     return false;
 306
 307   len = hex_value (*src++);
 308   if (len == 0)
 309     len = 16;
 310   for (i = 0; i < len && (src + i) < endp; i++)
 311     dstp[i] = src[i];
 312   dstp[i] = 0;
 313   *srcp = src + i;
 314   *lenp = len;
 315   return i == len;
 316 }
 317
 318 static struct data_struct *
 319 find_chunk (bfd *abfd, bfd_vma vma, bool create)
 320 {
 321   struct data_struct *d = abfd->tdata.tekhex_data->data;
 322
 323   vma &= ~CHUNK_MASK;
 324   while (d && (d->vma) != vma)
 325     d = d->next;
 326
 327   if (!d && create)
 328     {
 329       /* No chunk for this address, so make one up.  */
 330       d = (struct data_struct *)
 331           bfd_zalloc (abfd, (bfd_size_type) sizeof (struct data_struct));
 332
 333       if (!d)
 334         return NULL;
 335
 336       d->next = abfd->tdata.tekhex_data->data;
 337       d->vma = vma;
 338       abfd->tdata.tekhex_data->data = d;
 339     }
 340   return d;
 341 }
 342
 343 static void
 344 insert_byte (bfd *abfd, int value, bfd_vma addr)
 345 {
 346   if (value != 0)
 347     {
 348       /* Find the chunk that this byte needs and put it in.  */
 349       struct data_struct *d = find_chunk (abfd, addr, true);
 350
 351       d->chunk_data[addr & CHUNK_MASK] = value;
 352       d->chunk_init[(addr & CHUNK_MASK) / CHUNK_SPAN] = 1;
 353     }
 354 }
 355
 356 /* The first pass is to find the names of all the sections, and see
 357   how big the data is.  */
 358
 359 static bool
 360 first_phase (bfd *abfd, int type, char *src, char * src_end)
 361 {
 362   asection *section, *alt_section;
 363   unsigned int len;
 364   bfd_vma addr;
 365   bfd_vma val;
 366   char sym[17];                 /* A symbol can only be 16chars long.  */
 367
 368   switch (type)
 369     {
 370     case '6':
 371       /* Data record - read it and store it.  */
 372       if (!getvalue (&src, &addr, src_end))
 373         return false;
 374
 375       while (*src && src < src_end - 1)
 376         {
 377           insert_byte (abfd, HEX (src), addr);
 378           src += 2;
 379           addr++;
 380         }
 381       return true;
 382
 383     case '3':
 384       /* Symbol record, read the segment.  */
 385       if (!getsym (sym, &src, &len, src_end))
 386         return false;
 387       section = bfd_get_section_by_name (abfd, sym);
 388       if (section == NULL)
 389         {
 390           char *n = (char *) bfd_alloc (abfd, (bfd_size_type) len + 1);
 391
 392           if (!n)
 393             return false;
 394           memcpy (n, sym, len + 1);
 395           section = bfd_make_section_old_way (abfd, n);
 396           if (section == NULL)
 397             return false;
 398         }
 399       alt_section = NULL;
 400       while (src < src_end && *src)
 401         {
 402           switch (*src)
 403             {
 404             case '1':           /* Section range.  */
 405               src++;
 406               if (!getvalue (&src, &addr, src_end))
 407                 return false;
 408               if (!getvalue (&src, &val, src_end))
 409                 return false;
 410               if (bfd_is_const_section (section))
 411                 break;
 412               section->vma = addr;
 413               if (val < addr)
 414                 val = addr;
 415               section->size = val - addr;
 416               /* PR 17512: file: objdump-s-endless-loop.tekhex.
 417                  Check for overlarge section sizes.  */
 418               if (section->size & 0x80000000)
 419                 return false;
 420               section->flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC;
 421               break;
 422             case '0':
 423             case '2':
 424             case '3':
 425             case '4':
 426             case '6':
 427             case '7':
 428             case '8':
 429               /* Symbols, add to section.  */
 430               {
 431                 size_t amt = sizeof (tekhex_symbol_type);
 432                 tekhex_symbol_type *new_symbol = (tekhex_symbol_type *)
 433                     bfd_alloc (abfd, amt);
 434                 char stype = (*src);
 435
 436                 if (!new_symbol)
 437                   return false;
 438                 new_symbol->symbol.the_bfd = abfd;
 439                 src++;
 440                 abfd->symcount++;
 441                 abfd->flags |= HAS_SYMS;
 442                 new_symbol->prev = abfd->tdata.tekhex_data->symbols;
 443                 abfd->tdata.tekhex_data->symbols = new_symbol;
 444                 if (!getsym (sym, &src, &len, src_end))
 445                   return false;
 446                 new_symbol->symbol.name = (const char *)
 447                     bfd_alloc (abfd, (bfd_size_type) len + 1);
 448                 if (!new_symbol->symbol.name)
 449                   return false;
 450                 memcpy ((char *) (new_symbol->symbol.name), sym, len + 1);
 451                 new_symbol->symbol.section = section;
 452                 if (stype <= '4')
 453                   new_symbol->symbol.flags = (BSF_GLOBAL | BSF_EXPORT);
 454                 else
 455                   new_symbol->symbol.flags = BSF_LOCAL;
 456                 if (stype == '2' || stype == '6')
 457                   new_symbol->symbol.section = bfd_abs_section_ptr;
 458                 else if (bfd_is_const_section (section))
 459                   ;
 460                 else if (stype == '3' || stype == '7')
 461                   {
 462                     if ((section->flags & SEC_DATA) == 0)
 463                       section->flags |= SEC_CODE;
 464                     else
 465                       {
 466                         if (alt_section == NULL)
 467                           alt_section
 468                             = bfd_get_next_section_by_name (NULL, section);
 469                         if (alt_section == NULL)
 470                           alt_section = bfd_make_section_anyway_with_flags
 471                             (abfd, section->name,
 472                              (section->flags & ~SEC_DATA) | SEC_CODE);
 473                         if (alt_section == NULL)
 474                           return false;
 475                         new_symbol->symbol.section = alt_section;
 476                       }
 477                   }
 478                 else if (stype == '4' || stype == '8')
 479                   {
 480                     if ((section->flags & SEC_CODE) == 0)
 481                       section->flags |= SEC_DATA;
 482                     else
 483                       {
 484                         if (alt_section == NULL)
 485                           alt_section
 486                             = bfd_get_next_section_by_name (NULL, section);
 487                         if (alt_section == NULL)
 488                           alt_section = bfd_make_section_anyway_with_flags
 489                             (abfd, section->name,
 490                              (section->flags & ~SEC_CODE) | SEC_DATA);
 491                         if (alt_section == NULL)
 492                           return false;
 493                         new_symbol->symbol.section = alt_section;
 494                       }
 495                   }
 496                 if (!getvalue (&src, &val, src_end))
 497                   return false;
 498                 new_symbol->symbol.value = val - section->vma;
 499                 break;
 500               }
 501             default:
 502               return false;
 503             }
 504         }
 505     }
 506
 507   return true;
 508 }
 509
 510 /* Pass over a tekhex, calling one of the above functions on each
 511    record.  */
 512
 513 static bool
 514 pass_over (bfd *abfd, bool (*func) (bfd *, int, char *, char *))
 515 {
 516   unsigned int chars_on_line;
 517   bool is_eof = false;
 518
 519   /* To the front of the file.  */
 520   if (bfd_seek (abfd, 0, SEEK_SET) != 0)
 521     return false;
 522
 523   while (! is_eof)
 524     {
 525       char src[MAXCHUNK];
 526       char type;
 527
 528       /* Find first '%'.  */
 529       is_eof = bfd_read (src, 1, abfd) != 1;
 530       while (!is_eof && *src != '%')
 531         is_eof = bfd_read (src, 1, abfd) != 1;
 532
 533       if (is_eof)
 534         break;
 535
 536       /* Fetch the type and the length and the checksum.  */
 537       if (bfd_read (src, 5, abfd) != 5)
 538         return false;
 539
 540       type = src[2];
 541
 542       if (!ISHEX (src[0]) || !ISHEX (src[1]))
 543         break;
 544
 545       /* Already read five chars.  */
 546       chars_on_line = HEX (src) - 5;
 547
 548       if (chars_on_line >= MAXCHUNK)
 549         return false;
 550
 551       if (bfd_read (src, chars_on_line, abfd) != chars_on_line)
 552         return false;
 553
 554       /* Put a null at the end.  */
 555       src[chars_on_line] = 0;
 556       if (!func (abfd, type, src, src + chars_on_line))
 557         return false;
 558     }
 559
 560   return true;
 561 }
 562
 563 static long
 564 tekhex_canonicalize_symtab (bfd *abfd, asymbol **table)
 565 {
 566   tekhex_symbol_type *p = abfd->tdata.tekhex_data->symbols;
 567   unsigned int c = bfd_get_symcount (abfd);
 568
 569   table[c] = 0;
 570   while (p)
 571     {
 572       table[--c] = &(p->symbol);
 573       p = p->prev;
 574     }
 575
 576   return bfd_get_symcount (abfd);
 577 }
 578
 579 static long
 580 tekhex_get_symtab_upper_bound (bfd *abfd)
 581 {
 582   return (abfd->symcount + 1) * (sizeof (struct tekhex_asymbol_struct *));
 583
 584 }
 585
 586 static bool
 587 tekhex_mkobject (bfd *abfd)
 588 {
 589   tdata_type *tdata;
 590
 591   tdata = (tdata_type *) bfd_alloc (abfd, (bfd_size_type) sizeof (tdata_type));
 592   if (!tdata)
 593     return false;
 594   abfd->tdata.tekhex_data = tdata;
 595   tdata->type = 1;
 596   tdata->head =  NULL;
 597   tdata->symbols = NULL;
 598   tdata->data = NULL;
 599   return true;
 600 }
 601
 602 /* Return TRUE if the file looks like it's in TekHex format. Just look
 603    for a percent sign and some hex digits.  */
 604
 605 static bfd_cleanup
 606 tekhex_object_p (bfd *abfd)
 607 {
 608   char b[4];
 609
 610   tekhex_init ();
 611
 612   if (bfd_seek (abfd, 0, SEEK_SET) != 0
 613       || bfd_read (b, 4, abfd) != 4)
 614     return NULL;
 615
 616   if (b[0] != '%' || !ISHEX (b[1]) || !ISHEX (b[2]) || !ISHEX (b[3]))
 617     return NULL;
 618
 619   if (!tekhex_mkobject (abfd))
 620     return NULL;
 621
 622   if (!pass_over (abfd, first_phase))
 623     {
 624       bfd_release (abfd, abfd->tdata.tekhex_data);
 625       return NULL;
 626     }
 627
 628   return _bfd_no_cleanup;
 629 }
 630
 631 static void
 632 move_section_contents (bfd *abfd,
 633                        asection *section,
 634                        const void * locationp,
 635                        file_ptr offset,
 636                        bfd_size_type count,
 637                        bool get)
 638 {
 639   bfd_vma addr;
 640   char *location = (char *) locationp;
 641   bfd_vma prev_number = 1;      /* Nothing can have this as a high bit.  */
 642   struct data_struct *d = NULL;
 643
 644   BFD_ASSERT (offset == 0);
 645   for (addr = section->vma; count != 0; count--, addr++)
 646     {
 647       /* Get high bits of address.  */
 648       bfd_vma chunk_number = addr & ~(bfd_vma) CHUNK_MASK;
 649       bfd_vma low_bits = addr & CHUNK_MASK;
 650       bool must_write = !get && *location != 0;
 651
 652       if (chunk_number != prev_number || (!d && must_write))
 653         {
 654           /* Different chunk, so move pointer. */
 655           d = find_chunk (abfd, chunk_number, must_write);
 656           prev_number = chunk_number;
 657         }
 658
 659       if (get)
 660         {
 661           if (d)
 662             *location = d->chunk_data[low_bits];
 663           else
 664             *location = 0;
 665         }
 666       else if (must_write)
 667         {
 668           d->chunk_data[low_bits] = *location;
 669           d->chunk_init[low_bits / CHUNK_SPAN] = 1;
 670         }
 671
 672       location++;
 673     }
 674 }
 675
 676 static bool
 677 tekhex_get_section_contents (bfd *abfd,
 678                              asection *section,
 679                              void * locationp,
 680                              file_ptr offset,
 681                              bfd_size_type count)
 682 {
 683   if (section->flags & (SEC_LOAD | SEC_ALLOC))
 684     {
 685       move_section_contents (abfd, section, locationp, offset, count, true);
 686       return true;
 687     }
 688
 689   return false;
 690 }
 691
 692 static bool
 693 tekhex_set_arch_mach (bfd *abfd,
 694                       enum bfd_architecture arch,
 695                       unsigned long machine)
 696 {
 697   /* Ignore errors about unknown architecture.  */
 698   return (bfd_default_set_arch_mach (abfd, arch, machine)
 699           || arch == bfd_arch_unknown);
 700 }
 701
 702 /* We have to save up all the Tekhexords for a splurge before output.  */
 703
 704 static bool
 705 tekhex_set_section_contents (bfd *abfd,
 706                              sec_ptr section,
 707                              const void * locationp,
 708                              file_ptr offset,
 709                              bfd_size_type bytes_to_do)
 710 {
 711   if (section->flags & (SEC_LOAD | SEC_ALLOC))
 712     {
 713       move_section_contents (abfd, section, locationp, offset, bytes_to_do,
 714                              false);
 715       return true;
 716     }
 717
 718   return false;
 719 }
 720
 721 static void
 722 writevalue (char **dst, bfd_vma value)
 723 {
 724   char *p = *dst;
 725   int len;
 726   int shift;
 727
 728   for (len = BFD_ARCH_SIZE / 4, shift = len * 4 - 4; len > 1; shift -= 4, len--)
 729     if ((value >> shift) & 0xf)
 730       break;
 731
 732   *p++ = digs[len & 0xf];
 733   for (; len; shift -= 4, len--)
 734     *p++ = digs[(value >> shift) & 0xf];
 735   *dst = p;
 736 }
 737
 738 static void
 739 writesym (char **dst, const char *sym)
 740 {
 741   char *p = *dst;
 742   int len = (sym ? strlen (sym) : 0);
 743
 744   if (len >= 16)
 745     len = 16;
 746   else if (len == 0)
 747     {
 748       len = 1;
 749       sym = "$";
 750     }
 751
 752   *p++ = digs[len & 0xf];
 753   while (len--)
 754     *p++ = *sym++;
 755
 756   *dst = p;
 757 }
 758
 759 static void
 760 out (bfd *abfd, int type, char *start, char *end)
 761 {
 762   int sum = 0;
 763   char *s;
 764   char front[6];
 765   bfd_size_type wrlen;
 766
 767   front[0] = '%';
 768   TOHEX (front + 1, end - start + 5);
 769   front[3] = type;
 770
 771   for (s = start; s < end; s++)
 772     sum += sum_block[(unsigned char) *s];
 773
 774   sum += sum_block[(unsigned char) front[1]];   /* Length.  */
 775   sum += sum_block[(unsigned char) front[2]];
 776   sum += sum_block[(unsigned char) front[3]];   /* Type.  */
 777   TOHEX (front + 4, sum);
 778   if (bfd_write (front, 6, abfd) != 6)
 779     abort ();
 780   end[0] = '\n';
 781   wrlen = end - start + 1;
 782   if (bfd_write (start, wrlen, abfd) != wrlen)
 783     abort ();
 784 }
 785
 786 static bool
 787 tekhex_write_object_contents (bfd *abfd)
 788 {
 789   char buffer[100];
 790   asymbol **p;
 791   asection *s;
 792   struct data_struct *d;
 793
 794   tekhex_init ();
 795
 796   /* And the raw data.  */
 797   for (d = abfd->tdata.tekhex_data->data;
 798        d != NULL;
 799        d = d->next)
 800     {
 801       int low;
 802       int addr;
 803
 804       /* Write it in blocks of 32 bytes.  */
 805       for (addr = 0; addr < CHUNK_MASK + 1; addr += CHUNK_SPAN)
 806         {
 807           if (d->chunk_init[addr / CHUNK_SPAN])
 808             {
 809               char *dst = buffer;
 810
 811               writevalue (&dst, addr + d->vma);
 812               for (low = 0; low < CHUNK_SPAN; low++)
 813                 {
 814                   TOHEX (dst, d->chunk_data[addr + low]);
 815                   dst += 2;
 816                 }
 817               out (abfd, '6', buffer, dst);
 818             }
 819         }
 820     }
 821
 822   /* Write all the section headers for the sections.  */
 823   for (s = abfd->sections; s != NULL; s = s->next)
 824     {
 825       char *dst = buffer;
 826
 827       writesym (&dst, s->name);
 828       *dst++ = '1';
 829       writevalue (&dst, s->vma);
 830       writevalue (&dst, s->vma + s->size);
 831       out (abfd, '3', buffer, dst);
 832     }
 833
 834   /* And the symbols.  */
 835   if (abfd->outsymbols)
 836     {
 837       for (p = abfd->outsymbols; *p; p++)
 838         {
 839           int section_code = bfd_decode_symclass (*p);
 840
 841           if (section_code != '?')
 842             {
 843               /* Do not include debug symbols.  */
 844               asymbol *sym = *p;
 845               char *dst = buffer;
 846
 847               writesym (&dst, sym->section->name);
 848
 849               switch (section_code)
 850                 {
 851                 case 'A':
 852                   *dst++ = '2';
 853                   break;
 854                 case 'a':
 855                   *dst++ = '6';
 856                   break;
 857                 case 'D':
 858                 case 'B':
 859                 case 'O':
 860                   *dst++ = '4';
 861                   break;
 862                 case 'd':
 863                 case 'b':
 864                 case 'o':
 865                   *dst++ = '8';
 866                   break;
 867                 case 'T':
 868                   *dst++ = '3';
 869                   break;
 870                 case 't':
 871                   *dst++ = '7';
 872                   break;
 873                 case 'C':
 874                 case 'U':
 875                   bfd_set_error (bfd_error_wrong_format);
 876                   goto fail;
 877                 }
 878
 879               writesym (&dst, sym->name);
 880               writevalue (&dst, sym->value + sym->section->vma);
 881               out (abfd, '3', buffer, dst);
 882             }
 883         }
 884     }
 885
 886   /* And the terminator.  */
 887   if (bfd_write ("%0781010\n", 9, abfd) != 9)
 888     goto fail;
 889   return true;
 890
 891  fail:
 892   return false;
 893 }
 894
 895 static int
 896 tekhex_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED,
 897                        struct bfd_link_info *info ATTRIBUTE_UNUSED)
 898 {
 899   return 0;
 900 }
 901
 902 static asymbol *
 903 tekhex_make_empty_symbol (bfd *abfd)
 904 {
 905   size_t amt = sizeof (struct tekhex_symbol_struct);
 906   tekhex_symbol_type *new_symbol = (tekhex_symbol_type *) bfd_zalloc (abfd,
 907                                                                       amt);
 908
 909   if (!new_symbol)
 910     return NULL;
 911   new_symbol->symbol.the_bfd = abfd;
 912   new_symbol->prev =  NULL;
 913   return &(new_symbol->symbol);
 914 }
 915
 916 static void
 917 tekhex_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
 918                         asymbol *symbol,
 919                         symbol_info *ret)
 920 {
 921   bfd_symbol_info (symbol, ret);
 922 }
 923
 924 static void
 925 tekhex_print_symbol (bfd *abfd,
 926                      void * filep,
 927                      asymbol *symbol,
 928                      bfd_print_symbol_type how)
 929 {
 930   FILE *file = (FILE *) filep;
 931
 932   switch (how)
 933     {
 934     case bfd_print_symbol_name:
 935       fprintf (file, "%s", symbol->name);
 936       break;
 937     case bfd_print_symbol_more:
 938       break;
 939
 940     case bfd_print_symbol_all:
 941       {
 942         const char *section_name = symbol->section->name;
 943
 944         bfd_print_symbol_vandf (abfd, (void *) file, symbol);
 945
 946         fprintf (file, " %-5s %s",
 947                  section_name, symbol->name);
 948       }
 949     }
 950 }
 951
 952 #define tekhex_close_and_cleanup                    _bfd_generic_close_and_cleanup
 953 #define tekhex_bfd_free_cached_info                 _bfd_generic_bfd_free_cached_info
 954 #define tekhex_new_section_hook                     _bfd_generic_new_section_hook
 955 #define tekhex_bfd_is_target_special_symbol         _bfd_bool_bfd_asymbol_false
 956 #define tekhex_bfd_is_local_label_name               bfd_generic_is_local_label_name
 957 #define tekhex_get_lineno                           _bfd_nosymbols_get_lineno
 958 #define tekhex_find_nearest_line                    _bfd_nosymbols_find_nearest_line
 959 #define tekhex_find_nearest_line_with_alt           _bfd_nosymbols_find_nearest_line_with_alt
 960 #define tekhex_find_line                            _bfd_nosymbols_find_line
 961 #define tekhex_find_inliner_info                    _bfd_nosymbols_find_inliner_info
 962 #define tekhex_get_symbol_version_string            _bfd_nosymbols_get_symbol_version_string
 963 #define tekhex_bfd_make_debug_symbol                _bfd_nosymbols_bfd_make_debug_symbol
 964 #define tekhex_read_minisymbols                     _bfd_generic_read_minisymbols
 965 #define tekhex_minisymbol_to_symbol                 _bfd_generic_minisymbol_to_symbol
 966 #define tekhex_bfd_get_relocated_section_contents   bfd_generic_get_relocated_section_contents
 967 #define tekhex_bfd_relax_section                    bfd_generic_relax_section
 968 #define tekhex_bfd_gc_sections                      bfd_generic_gc_sections
 969 #define tekhex_bfd_lookup_section_flags             bfd_generic_lookup_section_flags
 970 #define tekhex_bfd_merge_sections                   bfd_generic_merge_sections
 971 #define tekhex_bfd_is_group_section                 bfd_generic_is_group_section
 972 #define tekhex_bfd_group_name                       bfd_generic_group_name
 973 #define tekhex_bfd_discard_group                    bfd_generic_discard_group
 974 #define tekhex_section_already_linked               _bfd_generic_section_already_linked
 975 #define tekhex_bfd_define_common_symbol             bfd_generic_define_common_symbol
 976 #define tekhex_bfd_link_hide_symbol                 _bfd_generic_link_hide_symbol
 977 #define tekhex_bfd_define_start_stop                bfd_generic_define_start_stop
 978 #define tekhex_bfd_link_hash_table_create           _bfd_generic_link_hash_table_create
 979 #define tekhex_bfd_link_add_symbols                 _bfd_generic_link_add_symbols
 980 #define tekhex_bfd_link_just_syms                   _bfd_generic_link_just_syms
 981 #define tekhex_bfd_copy_link_hash_symbol_type       _bfd_generic_copy_link_hash_symbol_type
 982 #define tekhex_bfd_final_link                       _bfd_generic_final_link
 983 #define tekhex_bfd_link_split_section               _bfd_generic_link_split_section
 984 #define tekhex_bfd_link_check_relocs                _bfd_generic_link_check_relocs
 985
 986 const bfd_target tekhex_vec =
 987 {
 988   "tekhex",                     /* Name.  */
 989   bfd_target_tekhex_flavour,
 990   BFD_ENDIAN_UNKNOWN,           /* Target byte order.  */
 991   BFD_ENDIAN_UNKNOWN,           /* Target headers byte order.  */
 992   EXEC_P | HAS_SYMS,            /* Object flags.  */
 993   (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS
 994    | SEC_ALLOC | SEC_LOAD),     /* Section flags.  */
 995   0,                            /* Leading underscore.  */
 996   ' ',                          /* AR_pad_char.  */
 997   16,                           /* AR_max_namelen.  */
 998   0,                            /* match priority.  */
 999   TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols.  */
1000   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
1001   bfd_getb32, bfd_getb_signed_32, bfd_putb32,
1002   bfd_getb16, bfd_getb_signed_16, bfd_putb16,   /* Data.  */
1003   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
1004   bfd_getb32, bfd_getb_signed_32, bfd_putb32,
1005   bfd_getb16, bfd_getb_signed_16, bfd_putb16,   /* Headers.  */
1006
1007   {
1008     _bfd_dummy_target,
1009     tekhex_object_p,            /* bfd_check_format.  */
1010     _bfd_dummy_target,
1011     _bfd_dummy_target,
1012   },
1013   {
1014     _bfd_bool_bfd_false_error,
1015     tekhex_mkobject,
1016     _bfd_bool_bfd_false_error,
1017     _bfd_bool_bfd_false_error,
1018   },
1019   {                             /* bfd_write_contents.  */
1020     _bfd_bool_bfd_false_error,
1021     tekhex_write_object_contents,
1022     _bfd_bool_bfd_false_error,
1023     _bfd_bool_bfd_false_error,
1024   },
1025
1026   BFD_JUMP_TABLE_GENERIC (tekhex),
1027   BFD_JUMP_TABLE_COPY (_bfd_generic),
1028   BFD_JUMP_TABLE_CORE (_bfd_nocore),
1029   BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
1030   BFD_JUMP_TABLE_SYMBOLS (tekhex),
1031   BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
1032   BFD_JUMP_TABLE_WRITE (tekhex),
1033   BFD_JUMP_TABLE_LINK (tekhex),
1034   BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
1035
1036   NULL,
1037
1038   NULL
1039 };