bfd/tekhex.c

   1 /* BFD backend for Extended Tektronix Hex Format  objects.
   2    Copyright 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000
   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 ($+)8006 rts
 234 ...
 235
 236 */
 237
 238 static void
 239 tekhex_init ()
 240 {
 241   unsigned int i;
 242   static boolean inited = false;
 243   int val;
 244
 245   if (inited == false)
 246     {
 247       inited = true;
 248       hex_init ();
 249       val = 0;
 250       for (i = 0; i < 10; i++)
 251         {
 252           sum_block[i + '0'] = val++;
 253         }
 254       for (i = 'A'; i <= 'Z'; i++)
 255         {
 256           sum_block[i] = val++;
 257         }
 258       sum_block['$'] = 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       char *sname = bfd_alloc (abfd, 12);
 358
 359       /* No chunk for this address, so make one up */
 360       d = (struct data_struct *)
 361         bfd_alloc (abfd, sizeof (struct data_struct));
 362
 363       if (!sname || !d)
 364         return NULL;
 365
 366       memset (d->chunk_init, 0, CHUNK_MASK + 1);
 367       memset (d->chunk_data, 0, CHUNK_MASK + 1);
 368       d->next = abfd->tdata.tekhex_data->data;
 369       d->vma = vma;
 370       abfd->tdata.tekhex_data->data = d;
 371     }
 372   return d;
 373 }
 374
 375 static void
 376 insert_byte (abfd, value, addr)
 377      bfd *abfd;
 378      int value;
 379      bfd_vma addr;
 380 {
 381   /* Find the chunk that this byte needs and put it in */
 382   struct data_struct *d = find_chunk (abfd, addr);
 383
 384   d->chunk_data[addr & CHUNK_MASK] = value;
 385   d->chunk_init[addr & CHUNK_MASK] = 1;
 386 }
 387
 388 /* The first pass is to find the names of all the sections, and see
 389   how big the data is */
 390 static void
 391 first_phase (abfd, type, src)
 392      bfd *abfd;
 393      int type;
 394      char *src;
 395 {
 396   asection *section = bfd_abs_section_ptr;
 397   int len;
 398   char sym[17];                 /* A symbol can only be 16chars long */
 399
 400   switch (type)
 401     {
 402     case '6':
 403       /* Data record - read it and store it */
 404       {
 405         bfd_vma addr = getvalue (&src);
 406
 407         while (*src)
 408           {
 409             insert_byte (abfd, HEX (src), addr);
 410             src += 2;
 411             addr++;
 412           }
 413       }
 414
 415       return;
 416     case '3':
 417       /* Symbol record, read the segment */
 418       len = getsym (sym, &src);
 419       section = bfd_get_section_by_name (abfd, sym);
 420       if (section == (asection *) NULL)
 421         {
 422           char *n = bfd_alloc (abfd, len + 1);
 423
 424           if (!n)
 425             abort ();           /* FIXME */
 426           memcpy (n, sym, len + 1);
 427           section = bfd_make_section (abfd, n);
 428         }
 429       while (*src)
 430         {
 431           switch (*src)
 432             {
 433             case '1':           /* section range */
 434               src++;
 435               section->vma = getvalue (&src);
 436               section->_raw_size = getvalue (&src) - section->vma;
 437               section->flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC;
 438               break;
 439             case '0':
 440             case '2':
 441             case '3':
 442             case '4':
 443             case '6':
 444             case '7':
 445             case '8':
 446               /* Symbols, add to section */
 447               {
 448                 tekhex_symbol_type *new =
 449                 (tekhex_symbol_type *) bfd_alloc (abfd,
 450                                                sizeof (tekhex_symbol_type));
 451                 char type = (*src);
 452
 453                 if (!new)
 454                   abort ();     /* FIXME */
 455                 new->symbol.the_bfd = abfd;
 456                 src++;
 457                 abfd->symcount++;
 458                 abfd->flags |= HAS_SYMS;
 459                 new->prev = abfd->tdata.tekhex_data->symbols;
 460                 abfd->tdata.tekhex_data->symbols = new;
 461                 len = getsym (sym, &src);
 462                 new->symbol.name = bfd_alloc (abfd, len + 1);
 463                 if (!new->symbol.name)
 464                   abort ();     /* FIXME */
 465                 memcpy ((char *) (new->symbol.name), sym, len + 1);
 466                 new->symbol.section = section;
 467                 if (type <= '4')
 468                   new->symbol.flags = (BSF_GLOBAL | BSF_EXPORT);
 469                 else
 470                   new->symbol.flags = BSF_LOCAL;
 471                 new->symbol.value = getvalue (&src) - section->vma;
 472               }
 473             }
 474         }
 475     }
 476 }
 477
 478 /* Pass over an tekhex, calling one of the above functions on each
 479    record.  */
 480
 481 static void
 482 pass_over (abfd, func)
 483      bfd *abfd;
 484      void (*func) PARAMS ((bfd *, int, char *));
 485 {
 486   unsigned int chars_on_line;
 487   boolean eof = false;
 488
 489   /* To the front of the file */
 490   if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
 491     abort ();
 492   while (eof == false)
 493     {
 494       char buffer[MAXCHUNK];
 495       char *src = buffer;
 496       char type;
 497
 498       /* Find first '%' */
 499       eof = (boolean) (bfd_read (src, 1, 1, abfd) != 1);
 500       while (*src != '%' && !eof)
 501         {
 502           eof = (boolean) (bfd_read (src, 1, 1, abfd) != 1);
 503         }
 504       if (eof)
 505         break;
 506       src++;
 507
 508       /* Fetch the type and the length and the checksum */
 509       if (bfd_read (src, 1, 5, abfd) != 5)
 510         abort (); /* FIXME */
 511
 512       type = src[2];
 513
 514       if (!ISHEX (src[0]) || !ISHEX (src[1]))
 515         break;
 516
 517       chars_on_line = HEX (src) - 5;    /* Already read five char */
 518
 519       if (bfd_read (src, 1, chars_on_line, abfd) != chars_on_line)
 520         abort (); /* FIXME */
 521       src[chars_on_line] = 0;   /* put a null at the end */
 522
 523       func (abfd, type, src);
 524     }
 525
 526 }
 527
 528 static long
 529 tekhex_get_symtab (abfd, table)
 530      bfd *abfd;
 531      asymbol **table;
 532 {
 533   tekhex_symbol_type *p = abfd->tdata.tekhex_data->symbols;
 534   unsigned int c = bfd_get_symcount (abfd);
 535
 536   table[c] = 0;
 537   while (p)
 538     {
 539       table[--c] = &(p->symbol);
 540       p = p->prev;
 541     }
 542
 543   return bfd_get_symcount (abfd);
 544 }
 545
 546 static long
 547 tekhex_get_symtab_upper_bound (abfd)
 548      bfd *abfd;
 549 {
 550   return (abfd->symcount + 1) * (sizeof (struct tekhex_asymbol_struct *));
 551
 552 }
 553
 554 static boolean
 555 tekhex_mkobject (abfd)
 556      bfd *abfd;
 557 {
 558   tdata_type *tdata = (tdata_type *) bfd_alloc (abfd, sizeof (tdata_type));
 559
 560   if (!tdata)
 561     return false;
 562   abfd->tdata.tekhex_data = tdata;
 563   tdata->type = 1;
 564   tdata->head = (tekhex_data_list_type *) NULL;
 565   tdata->symbols = (struct tekhex_symbol_struct *) NULL;
 566   tdata->data = (struct data_struct *) NULL;
 567   return true;
 568 }
 569
 570 /*
 571   Return true if the file looks like it's in TekHex format. Just look
 572   for a percent sign and some hex digits */
 573
 574 static const bfd_target *
 575 tekhex_object_p (abfd)
 576      bfd *abfd;
 577 {
 578   char b[4];
 579
 580   tekhex_init ();
 581
 582   if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
 583       || bfd_read (b, 1, 4, abfd) != 4)
 584     return NULL;
 585
 586   if (b[0] != '%' || !ISHEX (b[1]) || !ISHEX (b[2]) || !ISHEX (b[3]))
 587     return (const bfd_target *) NULL;
 588
 589   tekhex_mkobject (abfd);
 590
 591   pass_over (abfd, first_phase);
 592   return abfd->xvec;
 593 }
 594
 595 static void
 596 move_section_contents (abfd, section, locationp, offset, count, get)
 597      bfd *abfd;
 598      asection *section;
 599      PTR locationp;
 600      file_ptr offset ATTRIBUTE_UNUSED;
 601      bfd_size_type count;
 602      boolean get;
 603 {
 604   bfd_vma addr;
 605   char *location = (char *) locationp;
 606   bfd_vma prev_number = 1;      /* Nothing can have this as a high bit*/
 607   struct data_struct *d = (struct data_struct *) NULL;
 608
 609   for (addr = section->vma; count != 0; count--, addr++)
 610     {
 611
 612       bfd_vma chunk_number = addr & ~CHUNK_MASK;        /* Get high bits of address */
 613       bfd_vma low_bits = addr & CHUNK_MASK;
 614
 615       if (chunk_number != prev_number)
 616         {
 617           /* Different chunk, so move pointer */
 618           d = find_chunk (abfd, chunk_number);
 619         }
 620
 621       if (get)
 622         {
 623           if (d->chunk_init[low_bits])
 624             {
 625               *location = d->chunk_data[low_bits];
 626             }
 627           else
 628             {
 629               *location = 0;
 630             }
 631         }
 632       else
 633         {
 634           d->chunk_data[low_bits] = *location;
 635           d->chunk_init[low_bits] = (*location != 0);
 636         }
 637
 638       location++;
 639
 640     }
 641
 642 }
 643
 644 static boolean
 645 tekhex_get_section_contents (abfd, section, locationp, offset, count)
 646      bfd *abfd;
 647      asection *section;
 648      PTR locationp;
 649      file_ptr offset;
 650      bfd_size_type count;
 651 {
 652   if (section->flags & (SEC_LOAD | SEC_ALLOC))
 653     {
 654       move_section_contents (abfd, section, locationp, offset, count, true);
 655       return true;
 656     }
 657   else
 658     return false;
 659 }
 660
 661 static boolean
 662 tekhex_set_arch_mach (abfd, arch, machine)
 663      bfd *abfd;
 664      enum bfd_architecture arch;
 665      unsigned long machine;
 666 {
 667   return bfd_default_set_arch_mach (abfd, arch, machine);
 668 }
 669
 670 /* we have to save up all the Tekhexords for a splurge before output,
 671     */
 672
 673 static boolean
 674 tekhex_set_section_contents (abfd, section, locationp, offset, bytes_to_do)
 675      bfd *abfd;
 676      sec_ptr section;
 677      PTR locationp;
 678      file_ptr offset;
 679      bfd_size_type bytes_to_do;
 680 {
 681
 682   if (abfd->output_has_begun == false)
 683     {
 684       /* The first time around, allocate enough sections to hold all the chunks */
 685       asection *s = abfd->sections;
 686       bfd_vma vma;
 687
 688       for (s = abfd->sections; s; s = s->next)
 689         {
 690           if (s->flags & SEC_LOAD)
 691             {
 692               for (vma = s->vma & ~CHUNK_MASK;
 693                    vma < s->vma + s->_raw_size;
 694                    vma += CHUNK_MASK)
 695                 find_chunk (abfd, vma);
 696             }
 697         }
 698
 699     }
 700   if (section->flags & (SEC_LOAD | SEC_ALLOC))
 701     {
 702       move_section_contents (abfd, section, locationp, offset, bytes_to_do, false);
 703       return true;
 704     }
 705   else
 706     return false;
 707
 708 }
 709
 710 static void
 711 writevalue (dst, value)
 712      char **dst;
 713      bfd_vma value;
 714 {
 715   char *p = *dst;
 716   int len;
 717   int shift;
 718
 719   for (len = 8, shift = 28; shift; shift -= 4, len--)
 720     {
 721       if ((value >> shift) & 0xf)
 722         {
 723           *p++ = len + '0';
 724           while (len)
 725             {
 726               *p++ = digs[(value >> shift) & 0xf];
 727               shift -= 4;
 728               len--;
 729             }
 730           *dst = p;
 731           return;
 732
 733         }
 734     }
 735   *p++ = '1';
 736   *p++ = '0';
 737   *dst = p;
 738 }
 739
 740 static void
 741 writesym (dst, sym)
 742      char **dst;
 743      CONST char *sym;
 744 {
 745   char *p = *dst;
 746   int len = (sym ? strlen (sym) : 0);
 747
 748   if (len >= 16)
 749     {
 750       *p++ = '0';
 751       len = 16;
 752     }
 753
 754   else
 755     {
 756       if (len == 0)
 757         {
 758           *p++ = '1';
 759           sym = "$";
 760           len = 1;
 761         }
 762       else
 763         {
 764           *p++ = digs[len];
 765         }
 766     }
 767
 768   while (len--)
 769     {
 770       *p++ = *sym++;
 771     }
 772   *dst = p;
 773 }
 774
 775 static void
 776 out (abfd, type, start, end)
 777      bfd *abfd;
 778      int type;
 779      char *start;
 780      char *end;
 781 {
 782   int sum = 0;
 783   char *s;
 784   char front[6];
 785   bfd_size_type wrlen;
 786
 787   front[0] = '%';
 788   TOHEX (front + 1, end - start + 5);
 789   front[3] = type;
 790
 791   for (s = start; s < end; s++)
 792     {
 793       sum += sum_block[(unsigned char) *s];
 794     }
 795
 796   sum += sum_block[(unsigned char) front[1]];   /*  length */
 797   sum += sum_block[(unsigned char) front[2]];
 798   sum += sum_block[(unsigned char) front[3]];   /* type */
 799   TOHEX (front + 4, sum);
 800   if (bfd_write (front, 1, 6, abfd) != 6)
 801     abort ();
 802   end[0] = '\n';
 803   wrlen = end - start + 1;
 804   if (bfd_write (start, 1, wrlen, abfd) != wrlen)
 805     abort ();
 806 }
 807
 808 static boolean
 809 tekhex_write_object_contents (abfd)
 810      bfd *abfd;
 811 {
 812   int bytes_written;
 813   char buffer[100];
 814   asymbol **p;
 815   asection *s;
 816   struct data_struct *d;
 817
 818   tekhex_init ();
 819
 820   bytes_written = 0;
 821
 822   /* And the raw data */
 823   for (d = abfd->tdata.tekhex_data->data;
 824        d != (struct data_struct *) NULL;
 825        d = d->next)
 826     {
 827       int low;
 828
 829       CONST int span = 32;
 830       int addr;
 831
 832       /* Write it in blocks of 32 bytes */
 833
 834       for (addr = 0; addr < CHUNK_MASK + 1; addr += span)
 835         {
 836           int need = 0;
 837
 838           /* Check to see if necessary */
 839           for (low = 0; !need && low < span; low++)
 840             {
 841               if (d->chunk_init[addr + low])
 842                 need = 1;
 843             }
 844           if (need)
 845             {
 846               char *dst = buffer;
 847
 848               writevalue (&dst, addr + d->vma);
 849               for (low = 0; low < span; low++)
 850                 {
 851                   TOHEX (dst, d->chunk_data[addr + low]);
 852                   dst += 2;
 853                 }
 854               out (abfd, '6', buffer, dst);
 855             }
 856         }
 857     }
 858   /* write all the section headers for the sections */
 859   for (s = abfd->sections; s != (asection *) NULL; s = s->next)
 860     {
 861       char *dst = buffer;
 862
 863       writesym (&dst, s->name);
 864       *dst++ = '1';
 865       writevalue (&dst, s->vma);
 866       writevalue (&dst, s->vma + s->_raw_size);
 867       out (abfd, '3', buffer, dst);
 868     }
 869
 870   /* And the symbols */
 871   if (abfd->outsymbols)
 872     {
 873       for (p = abfd->outsymbols; *p; p++)
 874         {
 875           int section_code = bfd_decode_symclass (*p);
 876
 877           if (section_code != '?')
 878             {                   /* do not include debug symbols */
 879               asymbol *s = *p;
 880               char *dst = buffer;
 881
 882               writesym (&dst, s->section->name);
 883
 884               switch (section_code)
 885                 {
 886                 case 'A':
 887                   *dst++ = '2';
 888                   break;
 889                 case 'a':
 890                   *dst++ = '6';
 891                   break;
 892                 case 'D':
 893                 case 'B':
 894                 case 'O':
 895                   *dst++ = '4';
 896                   break;
 897                 case 'd':
 898                 case 'b':
 899                 case 'o':
 900                   *dst++ = '8';
 901                   break;
 902                 case 'T':
 903                   *dst++ = '3';
 904                   break;
 905                 case 't':
 906                   *dst++ = '7';
 907                   break;
 908                 case 'C':
 909                 case 'U':
 910                   bfd_set_error (bfd_error_wrong_format);
 911                   return false;
 912                 }
 913
 914               writesym (&dst, s->name);
 915               writevalue (&dst, s->value + s->section->vma);
 916               out (abfd, '3', buffer, dst);
 917             }
 918         }
 919     }
 920
 921   /* And the terminator */
 922   if (bfd_write ("%0781010\n", 1, 9, abfd) != 9)
 923     abort ();
 924   return true;
 925 }
 926
 927 static int
 928 tekhex_sizeof_headers (abfd, exec)
 929      bfd *abfd ATTRIBUTE_UNUSED;
 930      boolean exec ATTRIBUTE_UNUSED;
 931
 932 {
 933   return 0;
 934 }
 935
 936 static asymbol *
 937 tekhex_make_empty_symbol (abfd)
 938      bfd *abfd;
 939 {
 940   tekhex_symbol_type *new =
 941   (tekhex_symbol_type *) bfd_zalloc (abfd, sizeof (struct tekhex_symbol_struct));
 942
 943   if (!new)
 944     return NULL;
 945   new->symbol.the_bfd = abfd;
 946   new->prev = (struct tekhex_symbol_struct *) NULL;
 947   return &(new->symbol);
 948 }
 949
 950 static void
 951 tekhex_get_symbol_info (ignore_abfd, symbol, ret)
 952      bfd *ignore_abfd ATTRIBUTE_UNUSED;
 953      asymbol *symbol;
 954      symbol_info *ret;
 955 {
 956   bfd_symbol_info (symbol, ret);
 957 }
 958
 959 static void
 960 tekhex_print_symbol (abfd, filep, symbol, how)
 961      bfd *abfd;
 962      PTR filep;
 963      asymbol *symbol;
 964      bfd_print_symbol_type how;
 965 {
 966   FILE *file = (FILE *) filep;
 967
 968   switch (how)
 969     {
 970     case bfd_print_symbol_name:
 971       fprintf (file, "%s", symbol->name);
 972       break;
 973     case bfd_print_symbol_more:
 974       break;
 975
 976     case bfd_print_symbol_all:
 977       {
 978         CONST char *section_name = symbol->section->name;
 979
 980         bfd_print_symbol_vandf (abfd, (PTR) file, symbol);
 981
 982         fprintf (file, " %-5s %s",
 983                  section_name,
 984                  symbol->name);
 985       }
 986     }
 987 }
 988
 989 #define tekhex_close_and_cleanup _bfd_generic_close_and_cleanup
 990 #define tekhex_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
 991 #define tekhex_new_section_hook _bfd_generic_new_section_hook
 992
 993 #define tekhex_bfd_is_local_label_name bfd_generic_is_local_label_name
 994 #define tekhex_get_lineno _bfd_nosymbols_get_lineno
 995 #define tekhex_find_nearest_line _bfd_nosymbols_find_nearest_line
 996 #define tekhex_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
 997 #define tekhex_read_minisymbols _bfd_generic_read_minisymbols
 998 #define tekhex_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
 999
1000 #define tekhex_bfd_get_relocated_section_contents \
1001   bfd_generic_get_relocated_section_contents
1002 #define tekhex_bfd_relax_section bfd_generic_relax_section
1003 #define tekhex_bfd_gc_sections bfd_generic_gc_sections
1004 #define tekhex_bfd_merge_sections bfd_generic_merge_sections
1005 #define tekhex_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
1006 #define tekhex_bfd_link_add_symbols _bfd_generic_link_add_symbols
1007 #define tekhex_bfd_final_link _bfd_generic_final_link
1008 #define tekhex_bfd_link_split_section _bfd_generic_link_split_section
1009
1010 #define tekhex_get_section_contents_in_window \
1011   _bfd_generic_get_section_contents_in_window
1012
1013 const bfd_target tekhex_vec =
1014 {
1015   "tekhex",                     /* name */
1016   bfd_target_tekhex_flavour,
1017   BFD_ENDIAN_UNKNOWN,           /* target byte order */
1018   BFD_ENDIAN_UNKNOWN,           /* target headers byte order */
1019   (EXEC_P |                     /* object flags */
1020    HAS_SYMS | HAS_LINENO | HAS_DEBUG | HAS_RELOC | HAS_LOCALS |
1021    WP_TEXT | D_PAGED),
1022   (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS
1023    | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
1024   0,                            /* leading underscore */
1025   ' ',                          /* ar_pad_char */
1026   16,                           /* ar_max_namelen */
1027   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
1028   bfd_getb32, bfd_getb_signed_32, bfd_putb32,
1029   bfd_getb16, bfd_getb_signed_16, bfd_putb16,   /* data */
1030   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
1031   bfd_getb32, bfd_getb_signed_32, bfd_putb32,
1032   bfd_getb16, bfd_getb_signed_16, bfd_putb16,   /* hdrs */
1033
1034   {
1035     _bfd_dummy_target,
1036     tekhex_object_p,            /* bfd_check_format */
1037     _bfd_dummy_target,
1038     _bfd_dummy_target,
1039   },
1040   {
1041     bfd_false,
1042     tekhex_mkobject,
1043     _bfd_generic_mkarchive,
1044     bfd_false,
1045   },
1046   {                             /* bfd_write_contents */
1047     bfd_false,
1048     tekhex_write_object_contents,
1049     _bfd_write_archive_contents,
1050     bfd_false,
1051   },
1052
1053   BFD_JUMP_TABLE_GENERIC (tekhex),
1054   BFD_JUMP_TABLE_COPY (_bfd_generic),
1055   BFD_JUMP_TABLE_CORE (_bfd_nocore),
1056   BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
1057   BFD_JUMP_TABLE_SYMBOLS (tekhex),
1058   BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
1059   BFD_JUMP_TABLE_WRITE (tekhex),
1060   BFD_JUMP_TABLE_LINK (tekhex),
1061   BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
1062
1063   NULL,
1064
1065   (PTR) 0
1066 };