bfd/tekhex.c

   1 /* BFD backend for Extended Tektronix Hex Format  objects.
   2    Copyright (C) 1992-2015 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 ($+)8006 rts
 201    ...  */
 202
 203 static void
 204 tekhex_init (void)
 205 {
 206   unsigned int i;
 207   static bfd_boolean inited = FALSE;
 208   int val;
 209
 210   if (! inited)
 211     {
 212       inited = TRUE;
 213       hex_init ();
 214       val = 0;
 215       for (i = 0; i < 10; i++)
 216         sum_block[i + '0'] = val++;
 217
 218       for (i = 'A'; i <= 'Z'; i++)
 219         sum_block[i] = val++;
 220
 221       sum_block['$'] = 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 bfd_boolean
 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 (!ISHEX (*src))
 277     return FALSE;
 278
 279   len = hex_value (*src++);
 280   if (len == 0)
 281     len = 16;
 282   while (len-- && src < endp)
 283     {
 284       if (!ISHEX (*src))
 285         return FALSE;
 286       value = value << 4 | hex_value (*src++);
 287     }
 288
 289   *srcp = src;
 290   *valuep = value;
 291   return len == -1U;
 292 }
 293
 294 static bfd_boolean
 295 getsym (char *dstp, char **srcp, unsigned int *lenp, char * endp)
 296 {
 297   char *src = *srcp;
 298   unsigned int i;
 299   unsigned int len;
 300
 301   if (!ISHEX (*src))
 302     return FALSE;
 303
 304   len = hex_value (*src++);
 305   if (len == 0)
 306     len = 16;
 307   for (i = 0; i < len && src < endp; i++)
 308     dstp[i] = src[i];
 309   dstp[i] = 0;
 310   *srcp = src + i;
 311   *lenp = len;
 312   return i == len;
 313 }
 314
 315 static struct data_struct *
 316 find_chunk (bfd *abfd, bfd_vma vma, bfd_boolean create)
 317 {
 318   struct data_struct *d = abfd->tdata.tekhex_data->data;
 319
 320   vma &= ~CHUNK_MASK;
 321   while (d && (d->vma) != vma)
 322     d = d->next;
 323
 324   if (!d && create)
 325     {
 326       /* No chunk for this address, so make one up.  */
 327       d = (struct data_struct *)
 328           bfd_zalloc (abfd, (bfd_size_type) sizeof (struct data_struct));
 329
 330       if (!d)
 331         return NULL;
 332
 333       d->next = abfd->tdata.tekhex_data->data;
 334       d->vma = vma;
 335       abfd->tdata.tekhex_data->data = d;
 336     }
 337   return d;
 338 }
 339
 340 static void
 341 insert_byte (bfd *abfd, int value, bfd_vma addr)
 342 {
 343   if (value != 0)
 344     {
 345       /* Find the chunk that this byte needs and put it in.  */
 346       struct data_struct *d = find_chunk (abfd, addr, TRUE);
 347
 348       d->chunk_data[addr & CHUNK_MASK] = value;
 349       d->chunk_init[(addr & CHUNK_MASK) / CHUNK_SPAN] = 1;
 350     }
 351 }
 352
 353 /* The first pass is to find the names of all the sections, and see
 354   how big the data is.  */
 355
 356 static bfd_boolean
 357 first_phase (bfd *abfd, int type, char *src, char * src_end)
 358 {
 359   asection *section, *alt_section;
 360   unsigned int len;
 361   bfd_vma val;
 362   char sym[17];                 /* A symbol can only be 16chars long.  */
 363
 364   switch (type)
 365     {
 366     case '6':
 367       /* Data record - read it and store it.  */
 368       {
 369         bfd_vma addr;
 370
 371         if (!getvalue (&src, &addr, src_end))
 372           return FALSE;
 373
 374         while (*src && src < src_end - 1)
 375           {
 376             insert_byte (abfd, HEX (src), addr);
 377             src += 2;
 378             addr++;
 379           }
 380         return TRUE;
 381       }
 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 (abfd, n);
 396           if (section == NULL)
 397             return FALSE;
 398         }
 399       alt_section = NULL;
 400       while (*src)
 401         {
 402           switch (*src)
 403             {
 404             case '1':           /* Section range.  */
 405               src++;
 406               if (!getvalue (&src, &section->vma, src_end))
 407                 return FALSE;
 408               if (!getvalue (&src, &val, src_end))
 409                 return FALSE;
 410               section->size = val - section->vma;
 411               section->flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC;
 412               break;
 413             case '0':
 414             case '2':
 415             case '3':
 416             case '4':
 417             case '6':
 418             case '7':
 419             case '8':
 420               /* Symbols, add to section.  */
 421               {
 422                 bfd_size_type amt = sizeof (tekhex_symbol_type);
 423                 tekhex_symbol_type *new_symbol = (tekhex_symbol_type *)
 424                     bfd_alloc (abfd, amt);
 425                 char stype = (*src);
 426
 427                 if (!new_symbol)
 428                   return FALSE;
 429                 new_symbol->symbol.the_bfd = abfd;
 430                 src++;
 431                 abfd->symcount++;
 432                 abfd->flags |= HAS_SYMS;
 433                 new_symbol->prev = abfd->tdata.tekhex_data->symbols;
 434                 abfd->tdata.tekhex_data->symbols = new_symbol;
 435                 if (!getsym (sym, &src, &len, src_end))
 436                   return FALSE;
 437                 new_symbol->symbol.name = (const char *)
 438                     bfd_alloc (abfd, (bfd_size_type) len + 1);
 439                 if (!new_symbol->symbol.name)
 440                   return FALSE;
 441                 memcpy ((char *) (new_symbol->symbol.name), sym, len + 1);
 442                 new_symbol->symbol.section = section;
 443                 if (stype <= '4')
 444                   new_symbol->symbol.flags = (BSF_GLOBAL | BSF_EXPORT);
 445                 else
 446                   new_symbol->symbol.flags = BSF_LOCAL;
 447                 if (stype == '2' || stype == '6')
 448                   new_symbol->symbol.section = bfd_abs_section_ptr;
 449                 else if (stype == '3' || stype == '7')
 450                   {
 451                     if ((section->flags & SEC_DATA) == 0)
 452                       section->flags |= SEC_CODE;
 453                     else
 454                       {
 455                         if (alt_section == NULL)
 456                           alt_section = bfd_get_next_section_by_name (section);
 457                         if (alt_section == NULL)
 458                           alt_section = bfd_make_section_anyway_with_flags
 459                             (abfd, section->name,
 460                              (section->flags & ~SEC_DATA) | SEC_CODE);
 461                         if (alt_section == NULL)
 462                           return FALSE;
 463                         new_symbol->symbol.section = alt_section;
 464                       }
 465                   }
 466                 else if (stype == '4' || stype == '8')
 467                   {
 468                     if ((section->flags & SEC_CODE) == 0)
 469                       section->flags |= SEC_DATA;
 470                     else
 471                       {
 472                         if (alt_section == NULL)
 473                           alt_section = bfd_get_next_section_by_name (section);
 474                         if (alt_section == NULL)
 475                           alt_section = bfd_make_section_anyway_with_flags
 476                             (abfd, section->name,
 477                              (section->flags & ~SEC_CODE) | SEC_DATA);
 478                         if (alt_section == NULL)
 479                           return FALSE;
 480                         new_symbol->symbol.section = alt_section;
 481                       }
 482                   }
 483                 if (!getvalue (&src, &val, src_end))
 484                   return FALSE;
 485                 new_symbol->symbol.value = val - section->vma;
 486                 break;
 487               }
 488             default:
 489               return FALSE;
 490             }
 491         }
 492     }
 493
 494   return TRUE;
 495 }
 496
 497 /* Pass over a tekhex, calling one of the above functions on each
 498    record.  */
 499
 500 static bfd_boolean
 501 pass_over (bfd *abfd, bfd_boolean (*func) (bfd *, int, char *, char *))
 502 {
 503   unsigned int chars_on_line;
 504   bfd_boolean is_eof = FALSE;
 505
 506   /* To the front of the file.  */
 507   if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
 508     return FALSE;
 509   while (! is_eof)
 510     {
 511       char src[MAXCHUNK];
 512       char type;
 513
 514       /* Find first '%'.  */
 515       is_eof = (bfd_boolean) (bfd_bread (src, (bfd_size_type) 1, abfd) != 1);
 516       while (*src != '%' && !is_eof)
 517         is_eof = (bfd_boolean) (bfd_bread (src, (bfd_size_type) 1, abfd) != 1);
 518
 519       if (is_eof)
 520         break;
 521
 522       /* Fetch the type and the length and the checksum.  */
 523       if (bfd_bread (src, (bfd_size_type) 5, abfd) != 5)
 524         return FALSE;
 525
 526       type = src[2];
 527
 528       if (!ISHEX (src[0]) || !ISHEX (src[1]))
 529         break;
 530
 531       /* Already read five chars.  */
 532       chars_on_line = HEX (src) - 5;
 533
 534       if (chars_on_line >= MAXCHUNK)
 535         return FALSE;
 536
 537       if (bfd_bread (src, (bfd_size_type) chars_on_line, abfd) != chars_on_line)
 538         return FALSE;
 539
 540       /* Put a null at the end.  */
 541       src[chars_on_line] = 0;
 542       if (!func (abfd, type, src, src + chars_on_line))
 543         return FALSE;
 544     }
 545
 546   return TRUE;
 547 }
 548
 549 static long
 550 tekhex_canonicalize_symtab (bfd *abfd, asymbol **table)
 551 {
 552   tekhex_symbol_type *p = abfd->tdata.tekhex_data->symbols;
 553   unsigned int c = bfd_get_symcount (abfd);
 554
 555   table[c] = 0;
 556   while (p)
 557     {
 558       table[--c] = &(p->symbol);
 559       p = p->prev;
 560     }
 561
 562   return bfd_get_symcount (abfd);
 563 }
 564
 565 static long
 566 tekhex_get_symtab_upper_bound (bfd *abfd)
 567 {
 568   return (abfd->symcount + 1) * (sizeof (struct tekhex_asymbol_struct *));
 569
 570 }
 571
 572 static bfd_boolean
 573 tekhex_mkobject (bfd *abfd)
 574 {
 575   tdata_type *tdata;
 576
 577   tdata = (tdata_type *) bfd_alloc (abfd, (bfd_size_type) sizeof (tdata_type));
 578   if (!tdata)
 579     return FALSE;
 580   abfd->tdata.tekhex_data = tdata;
 581   tdata->type = 1;
 582   tdata->head =  NULL;
 583   tdata->symbols = NULL;
 584   tdata->data = NULL;
 585   return TRUE;
 586 }
 587
 588 /* Return TRUE if the file looks like it's in TekHex format. Just look
 589    for a percent sign and some hex digits.  */
 590
 591 static const bfd_target *
 592 tekhex_object_p (bfd *abfd)
 593 {
 594   char b[4];
 595
 596   tekhex_init ();
 597
 598   if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
 599       || bfd_bread (b, (bfd_size_type) 4, abfd) != 4)
 600     return NULL;
 601
 602   if (b[0] != '%' || !ISHEX (b[1]) || !ISHEX (b[2]) || !ISHEX (b[3]))
 603     return NULL;
 604
 605   tekhex_mkobject (abfd);
 606
 607   if (!pass_over (abfd, first_phase))
 608     return NULL;
 609
 610   return abfd->xvec;
 611 }
 612
 613 static void
 614 move_section_contents (bfd *abfd,
 615                        asection *section,
 616                        const void * locationp,
 617                        file_ptr offset,
 618                        bfd_size_type count,
 619                        bfd_boolean get)
 620 {
 621   bfd_vma addr;
 622   char *location = (char *) locationp;
 623   bfd_vma prev_number = 1;      /* Nothing can have this as a high bit.  */
 624   struct data_struct *d = NULL;
 625
 626   BFD_ASSERT (offset == 0);
 627   for (addr = section->vma; count != 0; count--, addr++)
 628     {
 629       /* Get high bits of address.  */
 630       bfd_vma chunk_number = addr & ~(bfd_vma) CHUNK_MASK;
 631       bfd_vma low_bits = addr & CHUNK_MASK;
 632       bfd_boolean must_write = !get && *location != 0;
 633
 634       if (chunk_number != prev_number || (!d && must_write))
 635         {
 636           /* Different chunk, so move pointer. */
 637           d = find_chunk (abfd, chunk_number, must_write);
 638           prev_number = chunk_number;
 639         }
 640
 641       if (get)
 642         {
 643           if (d)
 644             *location = d->chunk_data[low_bits];
 645           else
 646             *location = 0;
 647         }
 648       else if (must_write)
 649         {
 650           d->chunk_data[low_bits] = *location;
 651           d->chunk_init[low_bits / CHUNK_SPAN] = 1;
 652         }
 653
 654       location++;
 655     }
 656 }
 657
 658 static bfd_boolean
 659 tekhex_get_section_contents (bfd *abfd,
 660                              asection *section,
 661                              void * locationp,
 662                              file_ptr offset,
 663                              bfd_size_type count)
 664 {
 665   if (section->flags & (SEC_LOAD | SEC_ALLOC))
 666     {
 667       move_section_contents (abfd, section, locationp, offset, count, TRUE);
 668       return TRUE;
 669     }
 670
 671   return FALSE;
 672 }
 673
 674 static bfd_boolean
 675 tekhex_set_arch_mach (bfd *abfd,
 676                       enum bfd_architecture arch,
 677                       unsigned long machine)
 678 {
 679   /* Ignore errors about unknown architecture.  */
 680   return (bfd_default_set_arch_mach (abfd, arch, machine)
 681           || arch == bfd_arch_unknown);
 682 }
 683
 684 /* We have to save up all the Tekhexords for a splurge before output.  */
 685
 686 static bfd_boolean
 687 tekhex_set_section_contents (bfd *abfd,
 688                              sec_ptr section,
 689                              const void * locationp,
 690                              file_ptr offset,
 691                              bfd_size_type bytes_to_do)
 692 {
 693   if (section->flags & (SEC_LOAD | SEC_ALLOC))
 694     {
 695       move_section_contents (abfd, section, locationp, offset, bytes_to_do,
 696                              FALSE);
 697       return TRUE;
 698     }
 699
 700   return FALSE;
 701 }
 702
 703 static void
 704 writevalue (char **dst, bfd_vma value)
 705 {
 706   char *p = *dst;
 707   int len;
 708   int shift;
 709
 710   for (len = 8, shift = 28; shift; shift -= 4, len--)
 711     {
 712       if ((value >> shift) & 0xf)
 713         {
 714           *p++ = len + '0';
 715           while (len)
 716             {
 717               *p++ = digs[(value >> shift) & 0xf];
 718               shift -= 4;
 719               len--;
 720             }
 721           *dst = p;
 722           return;
 723
 724         }
 725     }
 726   *p++ = '1';
 727   *p++ = '0';
 728   *dst = p;
 729 }
 730
 731 static void
 732 writesym (char **dst, const char *sym)
 733 {
 734   char *p = *dst;
 735   int len = (sym ? strlen (sym) : 0);
 736
 737   if (len >= 16)
 738     {
 739       *p++ = '0';
 740       len = 16;
 741     }
 742   else
 743     {
 744       if (len == 0)
 745         {
 746           *p++ = '1';
 747           sym = "$";
 748           len = 1;
 749         }
 750       else
 751         *p++ = digs[len];
 752     }
 753
 754   while (len--)
 755     *p++ = *sym++;
 756
 757   *dst = p;
 758 }
 759
 760 static void
 761 out (bfd *abfd, int type, char *start, char *end)
 762 {
 763   int sum = 0;
 764   char *s;
 765   char front[6];
 766   bfd_size_type wrlen;
 767
 768   front[0] = '%';
 769   TOHEX (front + 1, end - start + 5);
 770   front[3] = type;
 771
 772   for (s = start; s < end; s++)
 773     sum += sum_block[(unsigned char) *s];
 774
 775   sum += sum_block[(unsigned char) front[1]];   /* Length.  */
 776   sum += sum_block[(unsigned char) front[2]];
 777   sum += sum_block[(unsigned char) front[3]];   /* Type.  */
 778   TOHEX (front + 4, sum);
 779   if (bfd_bwrite (front, (bfd_size_type) 6, abfd) != 6)
 780     abort ();
 781   end[0] = '\n';
 782   wrlen = end - start + 1;
 783   if (bfd_bwrite (start, wrlen, abfd) != wrlen)
 784     abort ();
 785 }
 786
 787 static bfd_boolean
 788 tekhex_write_object_contents (bfd *abfd)
 789 {
 790   char buffer[100];
 791   asymbol **p;
 792   asection *s;
 793   struct data_struct *d;
 794
 795   tekhex_init ();
 796
 797   /* And the raw data.  */
 798   for (d = abfd->tdata.tekhex_data->data;
 799        d != NULL;
 800        d = d->next)
 801     {
 802       int low;
 803       int addr;
 804
 805       /* Write it in blocks of 32 bytes.  */
 806       for (addr = 0; addr < CHUNK_MASK + 1; addr += CHUNK_SPAN)
 807         {
 808           if (d->chunk_init[addr / CHUNK_SPAN])
 809             {
 810               char *dst = buffer;
 811
 812               writevalue (&dst, addr + d->vma);
 813               for (low = 0; low < CHUNK_SPAN; low++)
 814                 {
 815                   TOHEX (dst, d->chunk_data[addr + low]);
 816                   dst += 2;
 817                 }
 818               out (abfd, '6', buffer, dst);
 819             }
 820         }
 821     }
 822
 823   /* Write all the section headers for the sections.  */
 824   for (s = abfd->sections; s != NULL; s = s->next)
 825     {
 826       char *dst = buffer;
 827
 828       writesym (&dst, s->name);
 829       *dst++ = '1';
 830       writevalue (&dst, s->vma);
 831       writevalue (&dst, s->vma + s->size);
 832       out (abfd, '3', buffer, dst);
 833     }
 834
 835   /* And the symbols.  */
 836   if (abfd->outsymbols)
 837     {
 838       for (p = abfd->outsymbols; *p; p++)
 839         {
 840           int section_code = bfd_decode_symclass (*p);
 841
 842           if (section_code != '?')
 843             {
 844               /* Do not include debug symbols.  */
 845               asymbol *sym = *p;
 846               char *dst = buffer;
 847
 848               writesym (&dst, sym->section->name);
 849
 850               switch (section_code)
 851                 {
 852                 case 'A':
 853                   *dst++ = '2';
 854                   break;
 855                 case 'a':
 856                   *dst++ = '6';
 857                   break;
 858                 case 'D':
 859                 case 'B':
 860                 case 'O':
 861                   *dst++ = '4';
 862                   break;
 863                 case 'd':
 864                 case 'b':
 865                 case 'o':
 866                   *dst++ = '8';
 867                   break;
 868                 case 'T':
 869                   *dst++ = '3';
 870                   break;
 871                 case 't':
 872                   *dst++ = '7';
 873                   break;
 874                 case 'C':
 875                 case 'U':
 876                   bfd_set_error (bfd_error_wrong_format);
 877                   return FALSE;
 878                 }
 879
 880               writesym (&dst, sym->name);
 881               writevalue (&dst, sym->value + sym->section->vma);
 882               out (abfd, '3', buffer, dst);
 883             }
 884         }
 885     }
 886
 887   /* And the terminator.  */
 888   if (bfd_bwrite ("%0781010\n", (bfd_size_type) 9, abfd) != 9)
 889     abort ();
 890   return TRUE;
 891 }
 892
 893 static int
 894 tekhex_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED,
 895                        struct bfd_link_info *info ATTRIBUTE_UNUSED)
 896 {
 897   return 0;
 898 }
 899
 900 static asymbol *
 901 tekhex_make_empty_symbol (bfd *abfd)
 902 {
 903   bfd_size_type amt = sizeof (struct tekhex_symbol_struct);
 904   tekhex_symbol_type *new_symbol = (tekhex_symbol_type *) bfd_zalloc (abfd,
 905                                                                       amt);
 906
 907   if (!new_symbol)
 908     return NULL;
 909   new_symbol->symbol.the_bfd = abfd;
 910   new_symbol->prev =  NULL;
 911   return &(new_symbol->symbol);
 912 }
 913
 914 static void
 915 tekhex_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
 916                         asymbol *symbol,
 917                         symbol_info *ret)
 918 {
 919   bfd_symbol_info (symbol, ret);
 920 }
 921
 922 static void
 923 tekhex_print_symbol (bfd *abfd,
 924                      void * filep,
 925                      asymbol *symbol,
 926                      bfd_print_symbol_type how)
 927 {
 928   FILE *file = (FILE *) filep;
 929
 930   switch (how)
 931     {
 932     case bfd_print_symbol_name:
 933       fprintf (file, "%s", symbol->name);
 934       break;
 935     case bfd_print_symbol_more:
 936       break;
 937
 938     case bfd_print_symbol_all:
 939       {
 940         const char *section_name = symbol->section->name;
 941
 942         bfd_print_symbol_vandf (abfd, (void *) file, symbol);
 943
 944         fprintf (file, " %-5s %s",
 945                  section_name, symbol->name);
 946       }
 947     }
 948 }
 949
 950 #define tekhex_close_and_cleanup                    _bfd_generic_close_and_cleanup
 951 #define tekhex_bfd_free_cached_info                 _bfd_generic_bfd_free_cached_info
 952 #define tekhex_new_section_hook                     _bfd_generic_new_section_hook
 953 #define tekhex_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
 954 #define tekhex_bfd_is_local_label_name               bfd_generic_is_local_label_name
 955 #define tekhex_get_lineno                           _bfd_nosymbols_get_lineno
 956 #define tekhex_find_nearest_line                    _bfd_nosymbols_find_nearest_line
 957 #define tekhex_find_line                            _bfd_nosymbols_find_line
 958 #define tekhex_find_inliner_info                    _bfd_nosymbols_find_inliner_info
 959 #define tekhex_get_symbol_version_string            _bfd_nosymbols_get_symbol_version_string
 960 #define tekhex_bfd_make_debug_symbol                _bfd_nosymbols_bfd_make_debug_symbol
 961 #define tekhex_read_minisymbols                     _bfd_generic_read_minisymbols
 962 #define tekhex_minisymbol_to_symbol                 _bfd_generic_minisymbol_to_symbol
 963 #define tekhex_bfd_get_relocated_section_contents   bfd_generic_get_relocated_section_contents
 964 #define tekhex_bfd_relax_section                    bfd_generic_relax_section
 965 #define tekhex_bfd_gc_sections                      bfd_generic_gc_sections
 966 #define tekhex_bfd_lookup_section_flags             bfd_generic_lookup_section_flags
 967 #define tekhex_bfd_merge_sections                   bfd_generic_merge_sections
 968 #define tekhex_bfd_is_group_section                 bfd_generic_is_group_section
 969 #define tekhex_bfd_discard_group                    bfd_generic_discard_group
 970 #define tekhex_section_already_linked               _bfd_generic_section_already_linked
 971 #define tekhex_bfd_define_common_symbol             bfd_generic_define_common_symbol
 972 #define tekhex_bfd_link_hash_table_create           _bfd_generic_link_hash_table_create
 973 #define tekhex_bfd_link_add_symbols                 _bfd_generic_link_add_symbols
 974 #define tekhex_bfd_link_just_syms                   _bfd_generic_link_just_syms
 975 #define tekhex_bfd_copy_link_hash_symbol_type \
 976   _bfd_generic_copy_link_hash_symbol_type
 977 #define tekhex_bfd_final_link                       _bfd_generic_final_link
 978 #define tekhex_bfd_link_split_section               _bfd_generic_link_split_section
 979 #define tekhex_get_section_contents_in_window       _bfd_generic_get_section_contents_in_window
 980
 981 const bfd_target tekhex_vec =
 982 {
 983   "tekhex",                     /* Name.  */
 984   bfd_target_tekhex_flavour,
 985   BFD_ENDIAN_UNKNOWN,           /* Target byte order.  */
 986   BFD_ENDIAN_UNKNOWN,           /* Target headers byte order.  */
 987   (EXEC_P |                     /* Object flags.  */
 988    HAS_SYMS | HAS_LINENO | HAS_DEBUG |
 989    HAS_RELOC | HAS_LOCALS | WP_TEXT | D_PAGED),
 990   (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS
 991    | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* Section flags.  */
 992   0,                            /* Leading underscore.  */
 993   ' ',                          /* AR_pad_char.  */
 994   16,                           /* AR_max_namelen.  */
 995   0,                            /* match priority.  */
 996   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 997   bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 998   bfd_getb16, bfd_getb_signed_16, bfd_putb16,   /* Data.  */
 999   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
1000   bfd_getb32, bfd_getb_signed_32, bfd_putb32,
1001   bfd_getb16, bfd_getb_signed_16, bfd_putb16,   /* Headers.  */
1002
1003   {
1004     _bfd_dummy_target,
1005     tekhex_object_p,            /* bfd_check_format.  */
1006     _bfd_dummy_target,
1007     _bfd_dummy_target,
1008   },
1009   {
1010     bfd_false,
1011     tekhex_mkobject,
1012     _bfd_generic_mkarchive,
1013     bfd_false,
1014   },
1015   {                             /* bfd_write_contents.  */
1016     bfd_false,
1017     tekhex_write_object_contents,
1018     _bfd_write_archive_contents,
1019     bfd_false,
1020   },
1021
1022   BFD_JUMP_TABLE_GENERIC (tekhex),
1023   BFD_JUMP_TABLE_COPY (_bfd_generic),
1024   BFD_JUMP_TABLE_CORE (_bfd_nocore),
1025   BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
1026   BFD_JUMP_TABLE_SYMBOLS (tekhex),
1027   BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
1028   BFD_JUMP_TABLE_WRITE (tekhex),
1029   BFD_JUMP_TABLE_LINK (tekhex),
1030   BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
1031
1032   NULL,
1033
1034   NULL
1035 };