bfd/tekhex.c

   1 /* BFD backend for Extended Tektronix Hex Format  objects.
   2    Copyright (C) 1992-2016 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 < src_end && *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               if (val < section->vma)
 411                 val = section->vma;
 412               section->size = val - section->vma;
 413               /* PR 17512: file: objdump-s-endless-loop.tekhex.
 414                  Check for overlarge section sizes.  */
 415               if (section->size & 0x80000000)
 416                 return FALSE;
 417               section->flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC;
 418               break;
 419             case '0':
 420             case '2':
 421             case '3':
 422             case '4':
 423             case '6':
 424             case '7':
 425             case '8':
 426               /* Symbols, add to section.  */
 427               {
 428                 bfd_size_type amt = sizeof (tekhex_symbol_type);
 429                 tekhex_symbol_type *new_symbol = (tekhex_symbol_type *)
 430                     bfd_alloc (abfd, amt);
 431                 char stype = (*src);
 432
 433                 if (!new_symbol)
 434                   return FALSE;
 435                 new_symbol->symbol.the_bfd = abfd;
 436                 src++;
 437                 abfd->symcount++;
 438                 abfd->flags |= HAS_SYMS;
 439                 new_symbol->prev = abfd->tdata.tekhex_data->symbols;
 440                 abfd->tdata.tekhex_data->symbols = new_symbol;
 441                 if (!getsym (sym, &src, &len, src_end))
 442                   return FALSE;
 443                 new_symbol->symbol.name = (const char *)
 444                     bfd_alloc (abfd, (bfd_size_type) len + 1);
 445                 if (!new_symbol->symbol.name)
 446                   return FALSE;
 447                 memcpy ((char *) (new_symbol->symbol.name), sym, len + 1);
 448                 new_symbol->symbol.section = section;
 449                 if (stype <= '4')
 450                   new_symbol->symbol.flags = (BSF_GLOBAL | BSF_EXPORT);
 451                 else
 452                   new_symbol->symbol.flags = BSF_LOCAL;
 453                 if (stype == '2' || stype == '6')
 454                   new_symbol->symbol.section = bfd_abs_section_ptr;
 455                 else if (stype == '3' || stype == '7')
 456                   {
 457                     if ((section->flags & SEC_DATA) == 0)
 458                       section->flags |= SEC_CODE;
 459                     else
 460                       {
 461                         if (alt_section == NULL)
 462                           alt_section
 463                             = bfd_get_next_section_by_name (NULL, section);
 464                         if (alt_section == NULL)
 465                           alt_section = bfd_make_section_anyway_with_flags
 466                             (abfd, section->name,
 467                              (section->flags & ~SEC_DATA) | SEC_CODE);
 468                         if (alt_section == NULL)
 469                           return FALSE;
 470                         new_symbol->symbol.section = alt_section;
 471                       }
 472                   }
 473                 else if (stype == '4' || stype == '8')
 474                   {
 475                     if ((section->flags & SEC_CODE) == 0)
 476                       section->flags |= SEC_DATA;
 477                     else
 478                       {
 479                         if (alt_section == NULL)
 480                           alt_section
 481                             = bfd_get_next_section_by_name (NULL, section);
 482                         if (alt_section == NULL)
 483                           alt_section = bfd_make_section_anyway_with_flags
 484                             (abfd, section->name,
 485                              (section->flags & ~SEC_CODE) | SEC_DATA);
 486                         if (alt_section == NULL)
 487                           return FALSE;
 488                         new_symbol->symbol.section = alt_section;
 489                       }
 490                   }
 491                 if (!getvalue (&src, &val, src_end))
 492                   return FALSE;
 493                 new_symbol->symbol.value = val - section->vma;
 494                 break;
 495               }
 496             default:
 497               return FALSE;
 498             }
 499         }
 500     }
 501
 502   return TRUE;
 503 }
 504
 505 /* Pass over a tekhex, calling one of the above functions on each
 506    record.  */
 507
 508 static bfd_boolean
 509 pass_over (bfd *abfd, bfd_boolean (*func) (bfd *, int, char *, char *))
 510 {
 511   unsigned int chars_on_line;
 512   bfd_boolean is_eof = FALSE;
 513
 514   /* To the front of the file.  */
 515   if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
 516     return FALSE;
 517   while (! is_eof)
 518     {
 519       char src[MAXCHUNK];
 520       char type;
 521
 522       /* Find first '%'.  */
 523       is_eof = (bfd_boolean) (bfd_bread (src, (bfd_size_type) 1, abfd) != 1);
 524       while (*src != '%' && !is_eof)
 525         is_eof = (bfd_boolean) (bfd_bread (src, (bfd_size_type) 1, abfd) != 1);
 526
 527       if (is_eof)
 528         break;
 529
 530       /* Fetch the type and the length and the checksum.  */
 531       if (bfd_bread (src, (bfd_size_type) 5, abfd) != 5)
 532         return FALSE;
 533
 534       type = src[2];
 535
 536       if (!ISHEX (src[0]) || !ISHEX (src[1]))
 537         break;
 538
 539       /* Already read five chars.  */
 540       chars_on_line = HEX (src) - 5;
 541
 542       if (chars_on_line >= MAXCHUNK)
 543         return FALSE;
 544
 545       if (bfd_bread (src, (bfd_size_type) chars_on_line, abfd) != chars_on_line)
 546         return FALSE;
 547
 548       /* Put a null at the end.  */
 549       src[chars_on_line] = 0;
 550       if (!func (abfd, type, src, src + chars_on_line))
 551         return FALSE;
 552     }
 553
 554   return TRUE;
 555 }
 556
 557 static long
 558 tekhex_canonicalize_symtab (bfd *abfd, asymbol **table)
 559 {
 560   tekhex_symbol_type *p = abfd->tdata.tekhex_data->symbols;
 561   unsigned int c = bfd_get_symcount (abfd);
 562
 563   table[c] = 0;
 564   while (p)
 565     {
 566       table[--c] = &(p->symbol);
 567       p = p->prev;
 568     }
 569
 570   return bfd_get_symcount (abfd);
 571 }
 572
 573 static long
 574 tekhex_get_symtab_upper_bound (bfd *abfd)
 575 {
 576   return (abfd->symcount + 1) * (sizeof (struct tekhex_asymbol_struct *));
 577
 578 }
 579
 580 static bfd_boolean
 581 tekhex_mkobject (bfd *abfd)
 582 {
 583   tdata_type *tdata;
 584
 585   tdata = (tdata_type *) bfd_alloc (abfd, (bfd_size_type) sizeof (tdata_type));
 586   if (!tdata)
 587     return FALSE;
 588   abfd->tdata.tekhex_data = tdata;
 589   tdata->type = 1;
 590   tdata->head =  NULL;
 591   tdata->symbols = NULL;
 592   tdata->data = NULL;
 593   return TRUE;
 594 }
 595
 596 /* Return TRUE if the file looks like it's in TekHex format. Just look
 597    for a percent sign and some hex digits.  */
 598
 599 static const bfd_target *
 600 tekhex_object_p (bfd *abfd)
 601 {
 602   char b[4];
 603
 604   tekhex_init ();
 605
 606   if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
 607       || bfd_bread (b, (bfd_size_type) 4, abfd) != 4)
 608     return NULL;
 609
 610   if (b[0] != '%' || !ISHEX (b[1]) || !ISHEX (b[2]) || !ISHEX (b[3]))
 611     return NULL;
 612
 613   tekhex_mkobject (abfd);
 614
 615   if (!pass_over (abfd, first_phase))
 616     return NULL;
 617
 618   return abfd->xvec;
 619 }
 620
 621 static void
 622 move_section_contents (bfd *abfd,
 623                        asection *section,
 624                        const void * locationp,
 625                        file_ptr offset,
 626                        bfd_size_type count,
 627                        bfd_boolean get)
 628 {
 629   bfd_vma addr;
 630   char *location = (char *) locationp;
 631   bfd_vma prev_number = 1;      /* Nothing can have this as a high bit.  */
 632   struct data_struct *d = NULL;
 633
 634   BFD_ASSERT (offset == 0);
 635   for (addr = section->vma; count != 0; count--, addr++)
 636     {
 637       /* Get high bits of address.  */
 638       bfd_vma chunk_number = addr & ~(bfd_vma) CHUNK_MASK;
 639       bfd_vma low_bits = addr & CHUNK_MASK;
 640       bfd_boolean must_write = !get && *location != 0;
 641
 642       if (chunk_number != prev_number || (!d && must_write))
 643         {
 644           /* Different chunk, so move pointer. */
 645           d = find_chunk (abfd, chunk_number, must_write);
 646           prev_number = chunk_number;
 647         }
 648
 649       if (get)
 650         {
 651           if (d)
 652             *location = d->chunk_data[low_bits];
 653           else
 654             *location = 0;
 655         }
 656       else if (must_write)
 657         {
 658           d->chunk_data[low_bits] = *location;
 659           d->chunk_init[low_bits / CHUNK_SPAN] = 1;
 660         }
 661
 662       location++;
 663     }
 664 }
 665
 666 static bfd_boolean
 667 tekhex_get_section_contents (bfd *abfd,
 668                              asection *section,
 669                              void * locationp,
 670                              file_ptr offset,
 671                              bfd_size_type count)
 672 {
 673   if (section->flags & (SEC_LOAD | SEC_ALLOC))
 674     {
 675       move_section_contents (abfd, section, locationp, offset, count, TRUE);
 676       return TRUE;
 677     }
 678
 679   return FALSE;
 680 }
 681
 682 static bfd_boolean
 683 tekhex_set_arch_mach (bfd *abfd,
 684                       enum bfd_architecture arch,
 685                       unsigned long machine)
 686 {
 687   /* Ignore errors about unknown architecture.  */
 688   return (bfd_default_set_arch_mach (abfd, arch, machine)
 689           || arch == bfd_arch_unknown);
 690 }
 691
 692 /* We have to save up all the Tekhexords for a splurge before output.  */
 693
 694 static bfd_boolean
 695 tekhex_set_section_contents (bfd *abfd,
 696                              sec_ptr section,
 697                              const void * locationp,
 698                              file_ptr offset,
 699                              bfd_size_type bytes_to_do)
 700 {
 701   if (section->flags & (SEC_LOAD | SEC_ALLOC))
 702     {
 703       move_section_contents (abfd, section, locationp, offset, bytes_to_do,
 704                              FALSE);
 705       return TRUE;
 706     }
 707
 708   return FALSE;
 709 }
 710
 711 static void
 712 writevalue (char **dst, bfd_vma value)
 713 {
 714   char *p = *dst;
 715   int len;
 716   int shift;
 717
 718   for (len = 8, shift = 28; shift; shift -= 4, len--)
 719     {
 720       if ((value >> shift) & 0xf)
 721         {
 722           *p++ = len + '0';
 723           while (len)
 724             {
 725               *p++ = digs[(value >> shift) & 0xf];
 726               shift -= 4;
 727               len--;
 728             }
 729           *dst = p;
 730           return;
 731
 732         }
 733     }
 734   *p++ = '1';
 735   *p++ = '0';
 736   *dst = p;
 737 }
 738
 739 static void
 740 writesym (char **dst, const char *sym)
 741 {
 742   char *p = *dst;
 743   int len = (sym ? strlen (sym) : 0);
 744
 745   if (len >= 16)
 746     {
 747       *p++ = '0';
 748       len = 16;
 749     }
 750   else
 751     {
 752       if (len == 0)
 753         {
 754           *p++ = '1';
 755           sym = "$";
 756           len = 1;
 757         }
 758       else
 759         *p++ = digs[len];
 760     }
 761
 762   while (len--)
 763     *p++ = *sym++;
 764
 765   *dst = p;
 766 }
 767
 768 static void
 769 out (bfd *abfd, int type, char *start, char *end)
 770 {
 771   int sum = 0;
 772   char *s;
 773   char front[6];
 774   bfd_size_type wrlen;
 775
 776   front[0] = '%';
 777   TOHEX (front + 1, end - start + 5);
 778   front[3] = type;
 779
 780   for (s = start; s < end; s++)
 781     sum += sum_block[(unsigned char) *s];
 782
 783   sum += sum_block[(unsigned char) front[1]];   /* Length.  */
 784   sum += sum_block[(unsigned char) front[2]];
 785   sum += sum_block[(unsigned char) front[3]];   /* Type.  */
 786   TOHEX (front + 4, sum);
 787   if (bfd_bwrite (front, (bfd_size_type) 6, abfd) != 6)
 788     abort ();
 789   end[0] = '\n';
 790   wrlen = end - start + 1;
 791   if (bfd_bwrite (start, wrlen, abfd) != wrlen)
 792     abort ();
 793 }
 794
 795 static bfd_boolean
 796 tekhex_write_object_contents (bfd *abfd)
 797 {
 798   char buffer[100];
 799   asymbol **p;
 800   asection *s;
 801   struct data_struct *d;
 802
 803   tekhex_init ();
 804
 805   /* And the raw data.  */
 806   for (d = abfd->tdata.tekhex_data->data;
 807        d != NULL;
 808        d = d->next)
 809     {
 810       int low;
 811       int addr;
 812
 813       /* Write it in blocks of 32 bytes.  */
 814       for (addr = 0; addr < CHUNK_MASK + 1; addr += CHUNK_SPAN)
 815         {
 816           if (d->chunk_init[addr / CHUNK_SPAN])
 817             {
 818               char *dst = buffer;
 819
 820               writevalue (&dst, addr + d->vma);
 821               for (low = 0; low < CHUNK_SPAN; low++)
 822                 {
 823                   TOHEX (dst, d->chunk_data[addr + low]);
 824                   dst += 2;
 825                 }
 826               out (abfd, '6', buffer, dst);
 827             }
 828         }
 829     }
 830
 831   /* Write all the section headers for the sections.  */
 832   for (s = abfd->sections; s != NULL; s = s->next)
 833     {
 834       char *dst = buffer;
 835
 836       writesym (&dst, s->name);
 837       *dst++ = '1';
 838       writevalue (&dst, s->vma);
 839       writevalue (&dst, s->vma + s->size);
 840       out (abfd, '3', buffer, dst);
 841     }
 842
 843   /* And the symbols.  */
 844   if (abfd->outsymbols)
 845     {
 846       for (p = abfd->outsymbols; *p; p++)
 847         {
 848           int section_code = bfd_decode_symclass (*p);
 849
 850           if (section_code != '?')
 851             {
 852               /* Do not include debug symbols.  */
 853               asymbol *sym = *p;
 854               char *dst = buffer;
 855
 856               writesym (&dst, sym->section->name);
 857
 858               switch (section_code)
 859                 {
 860                 case 'A':
 861                   *dst++ = '2';
 862                   break;
 863                 case 'a':
 864                   *dst++ = '6';
 865                   break;
 866                 case 'D':
 867                 case 'B':
 868                 case 'O':
 869                   *dst++ = '4';
 870                   break;
 871                 case 'd':
 872                 case 'b':
 873                 case 'o':
 874                   *dst++ = '8';
 875                   break;
 876                 case 'T':
 877                   *dst++ = '3';
 878                   break;
 879                 case 't':
 880                   *dst++ = '7';
 881                   break;
 882                 case 'C':
 883                 case 'U':
 884                   bfd_set_error (bfd_error_wrong_format);
 885                   return FALSE;
 886                 }
 887
 888               writesym (&dst, sym->name);
 889               writevalue (&dst, sym->value + sym->section->vma);
 890               out (abfd, '3', buffer, dst);
 891             }
 892         }
 893     }
 894
 895   /* And the terminator.  */
 896   if (bfd_bwrite ("%0781010\n", (bfd_size_type) 9, abfd) != 9)
 897     abort ();
 898   return TRUE;
 899 }
 900
 901 static int
 902 tekhex_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED,
 903                        struct bfd_link_info *info ATTRIBUTE_UNUSED)
 904 {
 905   return 0;
 906 }
 907
 908 static asymbol *
 909 tekhex_make_empty_symbol (bfd *abfd)
 910 {
 911   bfd_size_type amt = sizeof (struct tekhex_symbol_struct);
 912   tekhex_symbol_type *new_symbol = (tekhex_symbol_type *) bfd_zalloc (abfd,
 913                                                                       amt);
 914
 915   if (!new_symbol)
 916     return NULL;
 917   new_symbol->symbol.the_bfd = abfd;
 918   new_symbol->prev =  NULL;
 919   return &(new_symbol->symbol);
 920 }
 921
 922 static void
 923 tekhex_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
 924                         asymbol *symbol,
 925                         symbol_info *ret)
 926 {
 927   bfd_symbol_info (symbol, ret);
 928 }
 929
 930 static void
 931 tekhex_print_symbol (bfd *abfd,
 932                      void * filep,
 933                      asymbol *symbol,
 934                      bfd_print_symbol_type how)
 935 {
 936   FILE *file = (FILE *) filep;
 937
 938   switch (how)
 939     {
 940     case bfd_print_symbol_name:
 941       fprintf (file, "%s", symbol->name);
 942       break;
 943     case bfd_print_symbol_more:
 944       break;
 945
 946     case bfd_print_symbol_all:
 947       {
 948         const char *section_name = symbol->section->name;
 949
 950         bfd_print_symbol_vandf (abfd, (void *) file, symbol);
 951
 952         fprintf (file, " %-5s %s",
 953                  section_name, symbol->name);
 954       }
 955     }
 956 }
 957
 958 #define tekhex_close_and_cleanup                    _bfd_generic_close_and_cleanup
 959 #define tekhex_bfd_free_cached_info                 _bfd_generic_bfd_free_cached_info
 960 #define tekhex_new_section_hook                     _bfd_generic_new_section_hook
 961 #define tekhex_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
 962 #define tekhex_bfd_is_local_label_name               bfd_generic_is_local_label_name
 963 #define tekhex_get_lineno                           _bfd_nosymbols_get_lineno
 964 #define tekhex_find_nearest_line                    _bfd_nosymbols_find_nearest_line
 965 #define tekhex_find_line                            _bfd_nosymbols_find_line
 966 #define tekhex_find_inliner_info                    _bfd_nosymbols_find_inliner_info
 967 #define tekhex_get_symbol_version_string            _bfd_nosymbols_get_symbol_version_string
 968 #define tekhex_bfd_make_debug_symbol                _bfd_nosymbols_bfd_make_debug_symbol
 969 #define tekhex_read_minisymbols                     _bfd_generic_read_minisymbols
 970 #define tekhex_minisymbol_to_symbol                 _bfd_generic_minisymbol_to_symbol
 971 #define tekhex_bfd_get_relocated_section_contents   bfd_generic_get_relocated_section_contents
 972 #define tekhex_bfd_relax_section                    bfd_generic_relax_section
 973 #define tekhex_bfd_gc_sections                      bfd_generic_gc_sections
 974 #define tekhex_bfd_lookup_section_flags             bfd_generic_lookup_section_flags
 975 #define tekhex_bfd_merge_sections                   bfd_generic_merge_sections
 976 #define tekhex_bfd_is_group_section                 bfd_generic_is_group_section
 977 #define tekhex_bfd_discard_group                    bfd_generic_discard_group
 978 #define tekhex_section_already_linked               _bfd_generic_section_already_linked
 979 #define tekhex_bfd_define_common_symbol             bfd_generic_define_common_symbol
 980 #define tekhex_bfd_link_hash_table_create           _bfd_generic_link_hash_table_create
 981 #define tekhex_bfd_link_add_symbols                 _bfd_generic_link_add_symbols
 982 #define tekhex_bfd_link_just_syms                   _bfd_generic_link_just_syms
 983 #define tekhex_bfd_copy_link_hash_symbol_type       _bfd_generic_copy_link_hash_symbol_type
 984 #define tekhex_bfd_final_link                       _bfd_generic_final_link
 985 #define tekhex_bfd_link_split_section               _bfd_generic_link_split_section
 986 #define tekhex_get_section_contents_in_window       _bfd_generic_get_section_contents_in_window
 987 #define tekhex_bfd_link_check_relocs                _bfd_generic_link_check_relocs
 988
 989 const bfd_target tekhex_vec =
 990 {
 991   "tekhex",                     /* Name.  */
 992   bfd_target_tekhex_flavour,
 993   BFD_ENDIAN_UNKNOWN,           /* Target byte order.  */
 994   BFD_ENDIAN_UNKNOWN,           /* Target headers byte order.  */
 995   (EXEC_P |                     /* Object flags.  */
 996    HAS_SYMS | HAS_LINENO | HAS_DEBUG |
 997    HAS_RELOC | HAS_LOCALS | WP_TEXT | D_PAGED),
 998   (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS
 999    | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* Section flags.  */
1000   0,                            /* Leading underscore.  */
1001   ' ',                          /* AR_pad_char.  */
1002   16,                           /* AR_max_namelen.  */
1003   0,                            /* match priority.  */
1004   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
1005   bfd_getb32, bfd_getb_signed_32, bfd_putb32,
1006   bfd_getb16, bfd_getb_signed_16, bfd_putb16,   /* Data.  */
1007   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
1008   bfd_getb32, bfd_getb_signed_32, bfd_putb32,
1009   bfd_getb16, bfd_getb_signed_16, bfd_putb16,   /* Headers.  */
1010
1011   {
1012     _bfd_dummy_target,
1013     tekhex_object_p,            /* bfd_check_format.  */
1014     _bfd_dummy_target,
1015     _bfd_dummy_target,
1016   },
1017   {
1018     bfd_false,
1019     tekhex_mkobject,
1020     _bfd_generic_mkarchive,
1021     bfd_false,
1022   },
1023   {                             /* bfd_write_contents.  */
1024     bfd_false,
1025     tekhex_write_object_contents,
1026     _bfd_write_archive_contents,
1027     bfd_false,
1028   },
1029
1030   BFD_JUMP_TABLE_GENERIC (tekhex),
1031   BFD_JUMP_TABLE_COPY (_bfd_generic),
1032   BFD_JUMP_TABLE_CORE (_bfd_nocore),
1033   BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
1034   BFD_JUMP_TABLE_SYMBOLS (tekhex),
1035   BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
1036   BFD_JUMP_TABLE_WRITE (tekhex),
1037   BFD_JUMP_TABLE_LINK (tekhex),
1038   BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
1039
1040   NULL,
1041
1042   NULL
1043 };