bfd/tekhex.c

   1 /* BFD backend for Extended Tektronix Hex Format  objects.
   2    Copyright 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002
   3    Free Software Foundation, Inc.
   4    Written by Steve Chamberlain of Cygnus Support <sac@cygnus.com>.
   5
   6 This file is part of BFD, the Binary File Descriptor library.
   7
   8 This program is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 2 of the License, or
  11 (at your option) any later version.
  12
  13 This program is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with this program; if not, write to the Free Software
  20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 descibed 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
  70 #include "bfd.h"
  71 #include "sysdep.h"
  72 #include "libbfd.h"
  73 #include "libiberty.h"
  74
  75 typedef struct
  76   {
  77     bfd_vma low;
  78     bfd_vma high;
  79   } addr_range_type;
  80
  81 typedef struct tekhex_symbol_struct
  82   {
  83
  84     asymbol symbol;
  85     struct tekhex_symbol_struct *prev;
  86
  87   } tekhex_symbol_type;
  88
  89 static const char digs[] = "0123456789ABCDEF";
  90
  91 static char sum_block[256];
  92
  93 #define NOT_HEX 20
  94 #define NIBBLE(x) hex_value(x)
  95 #define HEX(buffer) ((NIBBLE((buffer)[0])<<4) + NIBBLE((buffer)[1]))
  96 #define TOHEX(d,x) \
  97 (d)[1] = digs[(x) & 0xf]; \
  98 (d)[0] = digs[((x)>>4)&0xf];
  99 #define ISHEX(x)  hex_p(x)
 100
 101 static void tekhex_init PARAMS ((void));
 102 static bfd_vma getvalue PARAMS ((char **));
 103 static void tekhex_print_symbol
 104  PARAMS ((bfd *, PTR, asymbol *, bfd_print_symbol_type));
 105 static void tekhex_get_symbol_info PARAMS ((bfd *, asymbol *, symbol_info *));
 106 static asymbol *tekhex_make_empty_symbol PARAMS ((bfd *));
 107 static int tekhex_sizeof_headers PARAMS ((bfd *, boolean));
 108 static boolean tekhex_write_object_contents PARAMS ((bfd *));
 109 static void out PARAMS ((bfd *, int, char *, char *));
 110 static void writesym PARAMS ((char **, const char *));
 111 static void writevalue PARAMS ((char **, bfd_vma));
 112 static boolean tekhex_set_section_contents
 113  PARAMS ((bfd*, sec_ptr, PTR, file_ptr, bfd_size_type));
 114 static boolean tekhex_set_arch_mach
 115  PARAMS ((bfd *, enum bfd_architecture, unsigned long));
 116 static boolean tekhex_get_section_contents
 117  PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type));
 118 static void move_section_contents
 119  PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type, boolean));
 120 static const bfd_target *tekhex_object_p PARAMS ((bfd *));
 121 static boolean tekhex_mkobject PARAMS ((bfd *));
 122 static long tekhex_get_symtab_upper_bound PARAMS ((bfd *));
 123 static long tekhex_get_symtab PARAMS ((bfd *, asymbol **));
 124 static void pass_over PARAMS ((bfd *, void (*) (bfd*, int, char *)));
 125 static void first_phase PARAMS ((bfd *, int, char *));
 126 static void insert_byte PARAMS ((bfd *, int, bfd_vma));
 127 static struct data_struct *find_chunk PARAMS ((bfd *, bfd_vma));
 128 static unsigned int getsym PARAMS ((char *, char **));
 129
 130 /*
 131 Here's an example
 132 %3A6C6480004E56FFFC4E717063B0AEFFFC6D0652AEFFFC60F24E5E4E75
 133 %1B3709T_SEGMENT1108FFFFFFFF
 134 %2B3AB9T_SEGMENT7Dgcc_compiled$1087hello$c10
 135 %373829T_SEGMENT80int$t1$r1$$214741080char$t2$r2$0$12710
 136 %373769T_SEGMENT80long$int$t3$r1$$1080unsigned$int$t4$10
 137 %373CA9T_SEGMENT80long$unsigned$in1080short$int$t6$r1$10
 138 %373049T_SEGMENT80long$long$int$t71080short$unsigned$i10
 139 %373A29T_SEGMENT80long$long$unsign1080signed$char$t10$10
 140 %373D69T_SEGMENT80unsigned$char$t11080float$t12$r1$4$010
 141 %373D19T_SEGMENT80double$t13$r1$8$1080long$double$t14$10
 142 %2734D9T_SEGMENT8Bvoid$t15$151035_main10
 143 %2F3CA9T_SEGMENT81$1081$1681$1E81$21487main$F110
 144 %2832F9T_SEGMENT83i$18FFFFFFFC81$1481$214
 145 %07 8 10 10
 146
 147 explanation:
 148 %3A6C6480004E56FFFC4E717063B0AEFFFC6D0652AEFFFC60F24E5E4E75
 149  ^ ^^ ^     ^-data
 150  | || +------ 4 char integer 0x8000
 151  | |+-------- checksum
 152  | +--------- type 6 (data record)
 153  +----------- length 3a chars
 154  <---------------------- 3a (58 chars) ------------------->
 155
 156 %1B3709T_SEGMENT1108FFFFFFFF
 157       ^         ^^ ^- 8 character integer 0xffffffff
 158       |         |+-   1 character integer 0
 159       |         +--   type 1 symbol (section definition)
 160       +------------   9 char symbol T_SEGMENT
 161
 162 %2B3AB9T_SEGMENT7Dgcc_compiled$1087hello$c10
 163 %373829T_SEGMENT80int$t1$r1$$214741080char$t2$r2$0$12710
 164 %373769T_SEGMENT80long$int$t3$r1$$1080unsigned$int$t4$10
 165 %373CA9T_SEGMENT80long$unsigned$in1080short$int$t6$r1$10
 166 %373049T_SEGMENT80long$long$int$t71080short$unsigned$i10
 167 %373A29T_SEGMENT80long$long$unsign1080signed$char$t10$10
 168 %373D69T_SEGMENT80unsigned$char$t11080float$t12$r1$4$010
 169 %373D19T_SEGMENT80double$t13$r1$8$1080long$double$t14$10
 170 %2734D9T_SEGMENT8Bvoid$t15$151035_main10
 171 %2F3CA9T_SEGMENT81$1081$1681$1E81$21487main$F110
 172 %2832F9T_SEGMENT83i$18FFFFFFFC81$1481$214
 173 %0781010
 174
 175 Turns into
 176 sac@thepub$ ./objdump -dx -m m68k f
 177
 178 f:     file format tekhex
 179 -----x--- 9/55728 -134219416 Sep 29 15:13 1995 f
 180 architecture: UNKNOWN!, flags 0x00000010:
 181 HAS_SYMS
 182 start address 0x00000000
 183 SECTION 0 [D00000000]   : size 00020000 vma 00000000 align 2**0
 184  ALLOC, LOAD
 185 SECTION 1 [D00008000]   : size 00002001 vma 00008000 align 2**0
 186
 187 SECTION 2 [T_SEGMENT]   : size ffffffff vma 00000000 align 2**0
 188
 189 SYMBOL TABLE:
 190 00000000  g       T_SEGMENT gcc_compiled$
 191 00000000  g       T_SEGMENT hello$c
 192 00000000  g       T_SEGMENT int$t1$r1$$21474
 193 00000000  g       T_SEGMENT char$t2$r2$0$127
 194 00000000  g       T_SEGMENT long$int$t3$r1$$
 195 00000000  g       T_SEGMENT unsigned$int$t4$
 196 00000000  g       T_SEGMENT long$unsigned$in
 197 00000000  g       T_SEGMENT short$int$t6$r1$
 198 00000000  g       T_SEGMENT long$long$int$t7
 199 00000000  g       T_SEGMENT short$unsigned$i
 200 00000000  g       T_SEGMENT long$long$unsign
 201 00000000  g       T_SEGMENT signed$char$t10$
 202 00000000  g       T_SEGMENT unsigned$char$t1
 203 00000000  g       T_SEGMENT float$t12$r1$4$0
 204 00000000  g       T_SEGMENT double$t13$r1$8$
 205 00000000  g       T_SEGMENT long$double$t14$
 206 00000000  g       T_SEGMENT void$t15$15
 207 00000000  g       T_SEGMENT _main
 208 00000000  g       T_SEGMENT $
 209 00000000  g       T_SEGMENT $
 210 00000000  g       T_SEGMENT $
 211 00000010  g       T_SEGMENT $
 212 00000000  g       T_SEGMENT main$F1
 213 fcffffff  g       T_SEGMENT i$1
 214 00000000  g       T_SEGMENT $
 215 00000010  g       T_SEGMENT $
 216
 217 RELOCATION RECORDS FOR [D00000000]: (none)
 218
 219 RELOCATION RECORDS FOR [D00008000]: (none)
 220
 221 RELOCATION RECORDS FOR [T_SEGMENT]: (none)
 222
 223 Disassembly of section D00000000:
 224 ...
 225 00008000 ($+)7ff0 linkw fp,#-4
 226 00008004 ($+)7ff4 nop
 227 00008006 ($+)7ff6 movel #99,d0
 228 00008008 ($+)7ff8 cmpl fp@(-4),d0
 229 0000800c ($+)7ffc blts 00008014 ($+)8004
 230 0000800e ($+)7ffe addql #1,fp@(-4)
 231 00008012 ($+)8002 bras 00008006 ($+)7ff6
 232 00008014 ($+)8004 unlk fp
 233 00008016 ($+)8006 rts
 234 ...
 235
 236 */
 237
 238 static void
 239 tekhex_init ()
 240 {
 241   unsigned int i;
 242   static boolean inited = false;
 243   int val;
 244
 245   if (! inited)
 246     {
 247       inited = true;
 248       hex_init ();
 249       val = 0;
 250       for (i = 0; i < 10; i++)
 251         {
 252           sum_block[i + '0'] = val++;
 253         }
 254       for (i = 'A'; i <= 'Z'; i++)
 255         {
 256           sum_block[i] = val++;
 257         }
 258       sum_block['$'] = val++;
 259       sum_block['%'] = val++;
 260       sum_block['.'] = val++;
 261       sum_block['_'] = val++;
 262       for (i = 'a'; i <= 'z'; i++)
 263         {
 264           sum_block[i] = val++;
 265         }
 266     }
 267 }
 268
 269 /* The maximum number of bytes on a line is FF */
 270 #define MAXCHUNK 0xff
 271 /* The number of bytes we fit onto a line on output */
 272 #define CHUNK 21
 273
 274 /* We cannot output our tekhexords as we see them, we have to glue them
 275    together, this is done in this structure : */
 276
 277 struct tekhex_data_list_struct
 278 {
 279   unsigned char *data;
 280   bfd_vma where;
 281   bfd_size_type size;
 282   struct tekhex_data_list_struct *next;
 283
 284 };
 285 typedef struct tekhex_data_list_struct tekhex_data_list_type;
 286
 287 #define CHUNK_MASK 0x1fff
 288
 289 struct data_struct
 290   {
 291     char chunk_data[CHUNK_MASK + 1];
 292     char chunk_init[CHUNK_MASK + 1];
 293     bfd_vma vma;
 294     struct data_struct *next;
 295   };
 296
 297 typedef struct tekhex_data_struct
 298 {
 299   tekhex_data_list_type *head;
 300   unsigned int type;
 301   struct tekhex_symbol_struct *symbols;
 302   struct data_struct *data;
 303 } tdata_type;
 304
 305 #define enda(x) (x->vma + x->size)
 306
 307 static bfd_vma
 308 getvalue (srcp)
 309      char **srcp;
 310 {
 311   char *src = *srcp;
 312   bfd_vma value = 0;
 313   unsigned int len = hex_value(*src++);
 314
 315   if (len == 0)
 316     len = 16;
 317   while (len--)
 318     {
 319       value = value << 4 | hex_value(*src++);
 320     }
 321   *srcp = src;
 322   return value;
 323 }
 324
 325 static unsigned int
 326 getsym (dstp, srcp)
 327      char *dstp;
 328      char **srcp;
 329 {
 330   char *src = *srcp;
 331   unsigned int i;
 332   unsigned int len = hex_value(*src++);
 333
 334   if (len == 0)
 335     len = 16;
 336   for (i = 0; i < len; i++)
 337     dstp[i] = src[i];
 338   dstp[i] = 0;
 339   *srcp = src + i;
 340   return len;
 341 }
 342
 343 static struct data_struct *
 344 find_chunk (abfd, vma)
 345      bfd *abfd;
 346      bfd_vma vma;
 347 {
 348   struct data_struct *d = abfd->tdata.tekhex_data->data;
 349
 350   vma &= ~CHUNK_MASK;
 351   while (d && (d->vma) != vma)
 352     {
 353       d = d->next;
 354     }
 355   if (!d)
 356     {
 357       /* No chunk for this address, so make one up */
 358       d = ((struct data_struct *)
 359            bfd_zalloc (abfd, (bfd_size_type) sizeof (struct data_struct)));
 360
 361       if (!d)
 362         return NULL;
 363
 364       d->next = abfd->tdata.tekhex_data->data;
 365       d->vma = vma;
 366       abfd->tdata.tekhex_data->data = d;
 367     }
 368   return d;
 369 }
 370
 371 static void
 372 insert_byte (abfd, value, addr)
 373      bfd *abfd;
 374      int value;
 375      bfd_vma addr;
 376 {
 377   /* Find the chunk that this byte needs and put it in */
 378   struct data_struct *d = find_chunk (abfd, addr);
 379
 380   d->chunk_data[addr & CHUNK_MASK] = value;
 381   d->chunk_init[addr & CHUNK_MASK] = 1;
 382 }
 383
 384 /* The first pass is to find the names of all the sections, and see
 385   how big the data is */
 386 static void
 387 first_phase (abfd, type, src)
 388      bfd *abfd;
 389      int type;
 390      char *src;
 391 {
 392   asection *section = bfd_abs_section_ptr;
 393   unsigned int len;
 394   char sym[17];                 /* A symbol can only be 16chars long */
 395
 396   switch (type)
 397     {
 398     case '6':
 399       /* Data record - read it and store it */
 400       {
 401         bfd_vma addr = getvalue (&src);
 402
 403         while (*src)
 404           {
 405             insert_byte (abfd, HEX (src), addr);
 406             src += 2;
 407             addr++;
 408           }
 409       }
 410
 411       return;
 412     case '3':
 413       /* Symbol record, read the segment */
 414       len = getsym (sym, &src);
 415       section = bfd_get_section_by_name (abfd, sym);
 416       if (section == (asection *) NULL)
 417         {
 418           char *n = bfd_alloc (abfd, (bfd_size_type) len + 1);
 419
 420           if (!n)
 421             abort ();           /* FIXME */
 422           memcpy (n, sym, len + 1);
 423           section = bfd_make_section (abfd, n);
 424         }
 425       while (*src)
 426         {
 427           switch (*src)
 428             {
 429             case '1':           /* section range */
 430               src++;
 431               section->vma = getvalue (&src);
 432               section->_raw_size = getvalue (&src) - section->vma;
 433               section->flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC;
 434               break;
 435             case '0':
 436             case '2':
 437             case '3':
 438             case '4':
 439             case '6':
 440             case '7':
 441             case '8':
 442               /* Symbols, add to section */
 443               {
 444                 bfd_size_type amt = sizeof (tekhex_symbol_type);
 445                 tekhex_symbol_type *new =
 446                   (tekhex_symbol_type *) bfd_alloc (abfd, amt);
 447                 char stype = (*src);
 448
 449                 if (!new)
 450                   abort ();     /* FIXME */
 451                 new->symbol.the_bfd = abfd;
 452                 src++;
 453                 abfd->symcount++;
 454                 abfd->flags |= HAS_SYMS;
 455                 new->prev = abfd->tdata.tekhex_data->symbols;
 456                 abfd->tdata.tekhex_data->symbols = new;
 457                 len = getsym (sym, &src);
 458                 new->symbol.name = bfd_alloc (abfd, (bfd_size_type) len + 1);
 459                 if (!new->symbol.name)
 460                   abort ();     /* FIXME */
 461                 memcpy ((char *) (new->symbol.name), sym, len + 1);
 462                 new->symbol.section = section;
 463                 if (stype <= '4')
 464                   new->symbol.flags = (BSF_GLOBAL | BSF_EXPORT);
 465                 else
 466                   new->symbol.flags = BSF_LOCAL;
 467                 new->symbol.value = getvalue (&src) - section->vma;
 468               }
 469             }
 470         }
 471     }
 472 }
 473
 474 /* Pass over an tekhex, calling one of the above functions on each
 475    record.  */
 476
 477 static void
 478 pass_over (abfd, func)
 479      bfd *abfd;
 480      void (*func) PARAMS ((bfd *, int, char *));
 481 {
 482   unsigned int chars_on_line;
 483   boolean eof = false;
 484
 485   /* To the front of the file */
 486   if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
 487     abort ();
 488   while (! eof)
 489     {
 490       char buffer[MAXCHUNK];
 491       char *src = buffer;
 492       char type;
 493
 494       /* Find first '%' */
 495       eof = (boolean) (bfd_bread (src, (bfd_size_type) 1, abfd) != 1);
 496       while (*src != '%' && !eof)
 497         {
 498           eof = (boolean) (bfd_bread (src, (bfd_size_type) 1, abfd) != 1);
 499         }
 500       if (eof)
 501         break;
 502       src++;
 503
 504       /* Fetch the type and the length and the checksum */
 505       if (bfd_bread (src, (bfd_size_type) 5, abfd) != 5)
 506         abort (); /* FIXME */
 507
 508       type = src[2];
 509
 510       if (!ISHEX (src[0]) || !ISHEX (src[1]))
 511         break;
 512
 513       chars_on_line = HEX (src) - 5;    /* Already read five char */
 514
 515       if (bfd_bread (src, (bfd_size_type) chars_on_line, abfd) != chars_on_line)
 516         abort (); /* FIXME */
 517       src[chars_on_line] = 0;   /* put a null at the end */
 518
 519       func (abfd, type, src);
 520     }
 521
 522 }
 523
 524 static long
 525 tekhex_get_symtab (abfd, table)
 526      bfd *abfd;
 527      asymbol **table;
 528 {
 529   tekhex_symbol_type *p = abfd->tdata.tekhex_data->symbols;
 530   unsigned int c = bfd_get_symcount (abfd);
 531
 532   table[c] = 0;
 533   while (p)
 534     {
 535       table[--c] = &(p->symbol);
 536       p = p->prev;
 537     }
 538
 539   return bfd_get_symcount (abfd);
 540 }
 541
 542 static long
 543 tekhex_get_symtab_upper_bound (abfd)
 544      bfd *abfd;
 545 {
 546   return (abfd->symcount + 1) * (sizeof (struct tekhex_asymbol_struct *));
 547
 548 }
 549
 550 static boolean
 551 tekhex_mkobject (abfd)
 552      bfd *abfd;
 553 {
 554   tdata_type *tdata;
 555
 556   tdata = (tdata_type *) bfd_alloc (abfd, (bfd_size_type) sizeof (tdata_type));
 557   if (!tdata)
 558     return false;
 559   abfd->tdata.tekhex_data = tdata;
 560   tdata->type = 1;
 561   tdata->head = (tekhex_data_list_type *) NULL;
 562   tdata->symbols = (struct tekhex_symbol_struct *) NULL;
 563   tdata->data = (struct data_struct *) NULL;
 564   return true;
 565 }
 566
 567 /*
 568   Return true if the file looks like it's in TekHex format. Just look
 569   for a percent sign and some hex digits */
 570
 571 static const bfd_target *
 572 tekhex_object_p (abfd)
 573      bfd *abfd;
 574 {
 575   char b[4];
 576
 577   tekhex_init ();
 578
 579   if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
 580       || bfd_bread (b, (bfd_size_type) 4, abfd) != 4)
 581     return NULL;
 582
 583   if (b[0] != '%' || !ISHEX (b[1]) || !ISHEX (b[2]) || !ISHEX (b[3]))
 584     return (const bfd_target *) NULL;
 585
 586   tekhex_mkobject (abfd);
 587
 588   pass_over (abfd, first_phase);
 589   return abfd->xvec;
 590 }
 591
 592 static void
 593 move_section_contents (abfd, section, locationp, offset, count, get)
 594      bfd *abfd;
 595      asection *section;
 596      PTR locationp;
 597      file_ptr offset;
 598      bfd_size_type count;
 599      boolean get;
 600 {
 601   bfd_vma addr;
 602   char *location = (char *) locationp;
 603   bfd_vma prev_number = 1;      /* Nothing can have this as a high bit*/
 604   struct data_struct *d = (struct data_struct *) NULL;
 605
 606   BFD_ASSERT (offset == 0);
 607   for (addr = section->vma; count != 0; count--, addr++)
 608     {
 609       /* Get high bits of address.  */
 610       bfd_vma chunk_number = addr & ~(bfd_vma) CHUNK_MASK;
 611       bfd_vma low_bits = addr & CHUNK_MASK;
 612
 613       if (chunk_number != prev_number)
 614         {
 615           /* Different chunk, so move pointer */
 616           d = find_chunk (abfd, chunk_number);
 617         }
 618
 619       if (get)
 620         {
 621           if (d->chunk_init[low_bits])
 622             {
 623               *location = d->chunk_data[low_bits];
 624             }
 625           else
 626             {
 627               *location = 0;
 628             }
 629         }
 630       else
 631         {
 632           d->chunk_data[low_bits] = *location;
 633           d->chunk_init[low_bits] = (*location != 0);
 634         }
 635
 636       location++;
 637
 638     }
 639
 640 }
 641
 642 static boolean
 643 tekhex_get_section_contents (abfd, section, locationp, offset, count)
 644      bfd *abfd;
 645      asection *section;
 646      PTR locationp;
 647      file_ptr offset;
 648      bfd_size_type count;
 649 {
 650   if (section->flags & (SEC_LOAD | SEC_ALLOC))
 651     {
 652       move_section_contents (abfd, section, locationp, offset, count, true);
 653       return true;
 654     }
 655   else
 656     return false;
 657 }
 658
 659 static boolean
 660 tekhex_set_arch_mach (abfd, arch, machine)
 661      bfd *abfd;
 662      enum bfd_architecture arch;
 663      unsigned long machine;
 664 {
 665   return bfd_default_set_arch_mach (abfd, arch, machine);
 666 }
 667
 668 /* we have to save up all the Tekhexords for a splurge before output,
 669     */
 670
 671 static boolean
 672 tekhex_set_section_contents (abfd, section, locationp, offset, bytes_to_do)
 673      bfd *abfd;
 674      sec_ptr section;
 675      PTR locationp;
 676      file_ptr offset;
 677      bfd_size_type bytes_to_do;
 678 {
 679
 680   if (! abfd->output_has_begun)
 681     {
 682       /* The first time around, allocate enough sections to hold all the chunks */
 683       asection *s = abfd->sections;
 684       bfd_vma vma;
 685
 686       for (s = abfd->sections; s; s = s->next)
 687         {
 688           if (s->flags & SEC_LOAD)
 689             {
 690               for (vma = s->vma & ~(bfd_vma) CHUNK_MASK;
 691                    vma < s->vma + s->_raw_size;
 692                    vma += CHUNK_MASK)
 693                 find_chunk (abfd, vma);
 694             }
 695         }
 696
 697     }
 698   if (section->flags & (SEC_LOAD | SEC_ALLOC))
 699     {
 700       move_section_contents (abfd, section, locationp, offset, bytes_to_do,
 701                              false);
 702       return true;
 703     }
 704   else
 705     return false;
 706
 707 }
 708
 709 static void
 710 writevalue (dst, value)
 711      char **dst;
 712      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 (dst, sym)
 741      char **dst;
 742      const char *sym;
 743 {
 744   char *p = *dst;
 745   int len = (sym ? strlen (sym) : 0);
 746
 747   if (len >= 16)
 748     {
 749       *p++ = '0';
 750       len = 16;
 751     }
 752
 753   else
 754     {
 755       if (len == 0)
 756         {
 757           *p++ = '1';
 758           sym = "$";
 759           len = 1;
 760         }
 761       else
 762         {
 763           *p++ = digs[len];
 764         }
 765     }
 766
 767   while (len--)
 768     {
 769       *p++ = *sym++;
 770     }
 771   *dst = p;
 772 }
 773
 774 static void
 775 out (abfd, type, start, end)
 776      bfd *abfd;
 777      int type;
 778      char *start;
 779      char *end;
 780 {
 781   int sum = 0;
 782   char *s;
 783   char front[6];
 784   bfd_size_type wrlen;
 785
 786   front[0] = '%';
 787   TOHEX (front + 1, end - start + 5);
 788   front[3] = type;
 789
 790   for (s = start; s < end; s++)
 791     {
 792       sum += sum_block[(unsigned char) *s];
 793     }
 794
 795   sum += sum_block[(unsigned char) front[1]];   /*  length */
 796   sum += sum_block[(unsigned char) front[2]];
 797   sum += sum_block[(unsigned char) front[3]];   /* type */
 798   TOHEX (front + 4, sum);
 799   if (bfd_bwrite (front, (bfd_size_type) 6, abfd) != 6)
 800     abort ();
 801   end[0] = '\n';
 802   wrlen = end - start + 1;
 803   if (bfd_bwrite (start, wrlen, abfd) != wrlen)
 804     abort ();
 805 }
 806
 807 static boolean
 808 tekhex_write_object_contents (abfd)
 809      bfd *abfd;
 810 {
 811   int bytes_written;
 812   char buffer[100];
 813   asymbol **p;
 814   asection *s;
 815   struct data_struct *d;
 816
 817   tekhex_init ();
 818
 819   bytes_written = 0;
 820
 821   /* And the raw data */
 822   for (d = abfd->tdata.tekhex_data->data;
 823        d != (struct data_struct *) NULL;
 824        d = d->next)
 825     {
 826       int low;
 827
 828       const int span = 32;
 829       int addr;
 830
 831       /* Write it in blocks of 32 bytes */
 832
 833       for (addr = 0; addr < CHUNK_MASK + 1; addr += span)
 834         {
 835           int need = 0;
 836
 837           /* Check to see if necessary */
 838           for (low = 0; !need && low < span; low++)
 839             {
 840               if (d->chunk_init[addr + low])
 841                 need = 1;
 842             }
 843           if (need)
 844             {
 845               char *dst = buffer;
 846
 847               writevalue (&dst, addr + d->vma);
 848               for (low = 0; low < span; low++)
 849                 {
 850                   TOHEX (dst, d->chunk_data[addr + low]);
 851                   dst += 2;
 852                 }
 853               out (abfd, '6', buffer, dst);
 854             }
 855         }
 856     }
 857   /* write all the section headers for the sections */
 858   for (s = abfd->sections; s != (asection *) NULL; s = s->next)
 859     {
 860       char *dst = buffer;
 861
 862       writesym (&dst, s->name);
 863       *dst++ = '1';
 864       writevalue (&dst, s->vma);
 865       writevalue (&dst, s->vma + s->_raw_size);
 866       out (abfd, '3', buffer, dst);
 867     }
 868
 869   /* And the symbols */
 870   if (abfd->outsymbols)
 871     {
 872       for (p = abfd->outsymbols; *p; p++)
 873         {
 874           int section_code = bfd_decode_symclass (*p);
 875
 876           if (section_code != '?')
 877             {                   /* do not include debug symbols */
 878               asymbol *sym = *p;
 879               char *dst = buffer;
 880
 881               writesym (&dst, sym->section->name);
 882
 883               switch (section_code)
 884                 {
 885                 case 'A':
 886                   *dst++ = '2';
 887                   break;
 888                 case 'a':
 889                   *dst++ = '6';
 890                   break;
 891                 case 'D':
 892                 case 'B':
 893                 case 'O':
 894                   *dst++ = '4';
 895                   break;
 896                 case 'd':
 897                 case 'b':
 898                 case 'o':
 899                   *dst++ = '8';
 900                   break;
 901                 case 'T':
 902                   *dst++ = '3';
 903                   break;
 904                 case 't':
 905                   *dst++ = '7';
 906                   break;
 907                 case 'C':
 908                 case 'U':
 909                   bfd_set_error (bfd_error_wrong_format);
 910                   return false;
 911                 }
 912
 913               writesym (&dst, sym->name);
 914               writevalue (&dst, sym->value + sym->section->vma);
 915               out (abfd, '3', buffer, dst);
 916             }
 917         }
 918     }
 919
 920   /* And the terminator */
 921   if (bfd_bwrite ("%0781010\n", (bfd_size_type) 9, abfd) != 9)
 922     abort ();
 923   return true;
 924 }
 925
 926 static int
 927 tekhex_sizeof_headers (abfd, exec)
 928      bfd *abfd ATTRIBUTE_UNUSED;
 929      boolean exec ATTRIBUTE_UNUSED;
 930
 931 {
 932   return 0;
 933 }
 934
 935 static asymbol *
 936 tekhex_make_empty_symbol (abfd)
 937      bfd *abfd;
 938 {
 939   bfd_size_type amt = sizeof (struct tekhex_symbol_struct);
 940   tekhex_symbol_type *new = (tekhex_symbol_type *) bfd_zalloc (abfd, amt);
 941
 942   if (!new)
 943     return NULL;
 944   new->symbol.the_bfd = abfd;
 945   new->prev = (struct tekhex_symbol_struct *) NULL;
 946   return &(new->symbol);
 947 }
 948
 949 static void
 950 tekhex_get_symbol_info (ignore_abfd, symbol, ret)
 951      bfd *ignore_abfd ATTRIBUTE_UNUSED;
 952      asymbol *symbol;
 953      symbol_info *ret;
 954 {
 955   bfd_symbol_info (symbol, ret);
 956 }
 957
 958 static void
 959 tekhex_print_symbol (abfd, filep, symbol, how)
 960      bfd *abfd;
 961      PTR filep;
 962      asymbol *symbol;
 963      bfd_print_symbol_type how;
 964 {
 965   FILE *file = (FILE *) filep;
 966
 967   switch (how)
 968     {
 969     case bfd_print_symbol_name:
 970       fprintf (file, "%s", symbol->name);
 971       break;
 972     case bfd_print_symbol_more:
 973       break;
 974
 975     case bfd_print_symbol_all:
 976       {
 977         const char *section_name = symbol->section->name;
 978
 979         bfd_print_symbol_vandf (abfd, (PTR) file, symbol);
 980
 981         fprintf (file, " %-5s %s",
 982                  section_name,
 983                  symbol->name);
 984       }
 985     }
 986 }
 987
 988 #define tekhex_close_and_cleanup _bfd_generic_close_and_cleanup
 989 #define tekhex_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
 990 #define tekhex_new_section_hook _bfd_generic_new_section_hook
 991
 992 #define tekhex_bfd_is_local_label_name bfd_generic_is_local_label_name
 993 #define tekhex_get_lineno _bfd_nosymbols_get_lineno
 994 #define tekhex_find_nearest_line _bfd_nosymbols_find_nearest_line
 995 #define tekhex_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
 996 #define tekhex_read_minisymbols _bfd_generic_read_minisymbols
 997 #define tekhex_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
 998
 999 #define tekhex_bfd_get_relocated_section_contents \
1000   bfd_generic_get_relocated_section_contents
1001 #define tekhex_bfd_relax_section bfd_generic_relax_section
1002 #define tekhex_bfd_gc_sections bfd_generic_gc_sections
1003 #define tekhex_bfd_merge_sections bfd_generic_merge_sections
1004 #define tekhex_bfd_discard_group bfd_generic_discard_group
1005 #define tekhex_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
1006 #define tekhex_bfd_link_hash_table_free _bfd_generic_link_hash_table_free
1007 #define tekhex_bfd_link_add_symbols _bfd_generic_link_add_symbols
1008 #define tekhex_bfd_link_just_syms _bfd_generic_link_just_syms
1009 #define tekhex_bfd_final_link _bfd_generic_final_link
1010 #define tekhex_bfd_link_split_section _bfd_generic_link_split_section
1011
1012 #define tekhex_get_section_contents_in_window \
1013   _bfd_generic_get_section_contents_in_window
1014
1015 const bfd_target tekhex_vec =
1016 {
1017   "tekhex",                     /* name */
1018   bfd_target_tekhex_flavour,
1019   BFD_ENDIAN_UNKNOWN,           /* target byte order */
1020   BFD_ENDIAN_UNKNOWN,           /* target headers byte order */
1021   (EXEC_P |                     /* object flags */
1022    HAS_SYMS | HAS_LINENO | HAS_DEBUG | HAS_RELOC | HAS_LOCALS |
1023    WP_TEXT | D_PAGED),
1024   (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS
1025    | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
1026   0,                            /* leading underscore */
1027   ' ',                          /* ar_pad_char */
1028   16,                           /* ar_max_namelen */
1029   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
1030   bfd_getb32, bfd_getb_signed_32, bfd_putb32,
1031   bfd_getb16, bfd_getb_signed_16, bfd_putb16,   /* data */
1032   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
1033   bfd_getb32, bfd_getb_signed_32, bfd_putb32,
1034   bfd_getb16, bfd_getb_signed_16, bfd_putb16,   /* hdrs */
1035
1036   {
1037     _bfd_dummy_target,
1038     tekhex_object_p,            /* bfd_check_format */
1039     _bfd_dummy_target,
1040     _bfd_dummy_target,
1041   },
1042   {
1043     bfd_false,
1044     tekhex_mkobject,
1045     _bfd_generic_mkarchive,
1046     bfd_false,
1047   },
1048   {                             /* bfd_write_contents */
1049     bfd_false,
1050     tekhex_write_object_contents,
1051     _bfd_write_archive_contents,
1052     bfd_false,
1053   },
1054
1055   BFD_JUMP_TABLE_GENERIC (tekhex),
1056   BFD_JUMP_TABLE_COPY (_bfd_generic),
1057   BFD_JUMP_TABLE_CORE (_bfd_nocore),
1058   BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
1059   BFD_JUMP_TABLE_SYMBOLS (tekhex),
1060   BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
1061   BFD_JUMP_TABLE_WRITE (tekhex),
1062   BFD_JUMP_TABLE_LINK (tekhex),
1063   BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
1064
1065   NULL,
1066
1067   (PTR) 0
1068 };