1/* BFD backend for Extended Tektronix Hex Format  objects.
2   Copyright 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002,
3   2003, 2004, 2007 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
21
22/* SUBSECTION
23	Tektronix Hex Format handling
24
25   DESCRIPTION
26
27	Tek Hex records can hold symbols and data, but not
28	relocations. Their main application is communication with
29	devices like PROM programmers and ICE equipment.
30
31	It seems that the sections are described as being really big,
32        the example I have says that the text section is 0..ffffffff.
33	BFD would barf with this, many apps would try to alloc 4GB to
34	read in the file.
35
36	Tex Hex may contain many sections, but the data which comes in
37	has no tag saying which section it belongs to, so we create
38	one section for each block of data, called "blknnnn" which we
39	stick all the data into.
40
41	TekHex may come out of 	order and there is no header, so an
42	initial scan is required  to discover the minimum and maximum
43	addresses used to create the vma and size of the sections we
44	create.
45	We read in the data into pages of CHUNK_MASK+1 size and read
46	them out from that whenever we need to.
47
48	Any number of sections may be created for output, we save them
49	up and output them when it's time to close the bfd.
50
51	A TekHex record looks like:
52  EXAMPLE
53	%<block length><type><checksum><stuff><cr>
54
55  DESCRIPTION
56	Where
57	o length
58	is the number of bytes in the record not including the % sign.
59	o type
60	is one of:
61	3) symbol record
62	6) data record
63	8) termination record
64
65  The data can come out of order, and may be discontigous. This is a
66  serial protocol, so big files are unlikely, so we keep a list of 8k chunks.  */
67
68#include "sysdep.h"
69#include "bfd.h"
70#include "libbfd.h"
71#include "libiberty.h"
72
73typedef struct
74{
75  bfd_vma low;
76  bfd_vma high;
77} addr_range_type;
78
79typedef struct tekhex_symbol_struct
80{
81  asymbol symbol;
82  struct tekhex_symbol_struct *prev;
83} tekhex_symbol_type;
84
85static const char digs[] = "0123456789ABCDEF";
86
87static char sum_block[256];
88
89#define NOT_HEX      20
90#define NIBBLE(x)    hex_value(x)
91#define HEX(buffer) ((NIBBLE ((buffer)[0]) << 4) + NIBBLE ((buffer)[1]))
92#define	ISHEX(x)    hex_p(x)
93#define TOHEX(d, x) \
94  (d)[1] = digs[(x) & 0xf]; \
95  (d)[0] = digs[((x)>>4)&0xf];
96
97/* Here's an example
98   %3A6C6480004E56FFFC4E717063B0AEFFFC6D0652AEFFFC60F24E5E4E75
99   %1B3709T_SEGMENT1108FFFFFFFF
100   %2B3AB9T_SEGMENT7Dgcc_compiled$1087hello$c10
101   %373829T_SEGMENT80int$t1$r1$$214741080char$t2$r2$0$12710
102   %373769T_SEGMENT80long$int$t3$r1$$1080unsigned$int$t4$10
103   %373CA9T_SEGMENT80long$unsigned$in1080short$int$t6$r1$10
104   %373049T_SEGMENT80long$long$int$t71080short$unsigned$i10
105   %373A29T_SEGMENT80long$long$unsign1080signed$char$t10$10
106   %373D69T_SEGMENT80unsigned$char$t11080float$t12$r1$4$010
107   %373D19T_SEGMENT80double$t13$r1$8$1080long$double$t14$10
108   %2734D9T_SEGMENT8Bvoid$t15$151035_main10
109   %2F3CA9T_SEGMENT81$1081$1681$1E81$21487main$F110
110   %2832F9T_SEGMENT83i$18FFFFFFFC81$1481$214
111   %07 8 10 10
112
113   explanation:
114   %3A6C6480004E56FFFC4E717063B0AEFFFC6D0652AEFFFC60F24E5E4E75
115    ^ ^^ ^     ^-data
116    | || +------ 4 char integer 0x8000
117    | |+-------- checksum
118    | +--------- type 6 (data record)
119    +----------- length 3a chars
120   <---------------------- 3a (58 chars) ------------------->
121
122   %1B3709T_SEGMENT1108FFFFFFFF
123         ^         ^^ ^- 8 character integer 0xffffffff
124         |         |+-   1 character integer 0
125         |         +--   type 1 symbol (section definition)
126         +------------   9 char symbol T_SEGMENT
127
128   %2B3AB9T_SEGMENT7Dgcc_compiled$1087hello$c10
129   %373829T_SEGMENT80int$t1$r1$$214741080char$t2$r2$0$12710
130   %373769T_SEGMENT80long$int$t3$r1$$1080unsigned$int$t4$10
131   %373CA9T_SEGMENT80long$unsigned$in1080short$int$t6$r1$10
132   %373049T_SEGMENT80long$long$int$t71080short$unsigned$i10
133   %373A29T_SEGMENT80long$long$unsign1080signed$char$t10$10
134   %373D69T_SEGMENT80unsigned$char$t11080float$t12$r1$4$010
135   %373D19T_SEGMENT80double$t13$r1$8$1080long$double$t14$10
136   %2734D9T_SEGMENT8Bvoid$t15$151035_main10
137   %2F3CA9T_SEGMENT81$1081$1681$1E81$21487main$F110
138   %2832F9T_SEGMENT83i$18FFFFFFFC81$1481$214
139   %0781010
140
141   Turns into
142   sac@thepub$ ./objdump -dx -m m68k f
143
144   f:     file format tekhex
145   -----x--- 9/55728 -134219416 Sep 29 15:13 1995 f
146   architecture: UNKNOWN!, flags 0x00000010:
147   HAS_SYMS
148   start address 0x00000000
149   SECTION 0 [D00000000]	: size 00020000 vma 00000000 align 2**0
150   ALLOC, LOAD
151   SECTION 1 [D00008000]	: size 00002001 vma 00008000 align 2**0
152
153   SECTION 2 [T_SEGMENT]	: size ffffffff vma 00000000 align 2**0
154
155   SYMBOL TABLE:
156   00000000  g       T_SEGMENT gcc_compiled$
157   00000000  g       T_SEGMENT hello$c
158   00000000  g       T_SEGMENT int$t1$r1$$21474
159   00000000  g       T_SEGMENT char$t2$r2$0$127
160   00000000  g       T_SEGMENT long$int$t3$r1$$
161   00000000  g       T_SEGMENT unsigned$int$t4$
162   00000000  g       T_SEGMENT long$unsigned$in
163   00000000  g       T_SEGMENT short$int$t6$r1$
164   00000000  g       T_SEGMENT long$long$int$t7
165   00000000  g       T_SEGMENT short$unsigned$i
166   00000000  g       T_SEGMENT long$long$unsign
167   00000000  g       T_SEGMENT signed$char$t10$
168   00000000  g       T_SEGMENT unsigned$char$t1
169   00000000  g       T_SEGMENT float$t12$r1$4$0
170   00000000  g       T_SEGMENT double$t13$r1$8$
171   00000000  g       T_SEGMENT long$double$t14$
172   00000000  g       T_SEGMENT void$t15$15
173   00000000  g       T_SEGMENT _main
174   00000000  g       T_SEGMENT $
175   00000000  g       T_SEGMENT $
176   00000000  g       T_SEGMENT $
177   00000010  g       T_SEGMENT $
178   00000000  g       T_SEGMENT main$F1
179   fcffffff  g       T_SEGMENT i$1
180   00000000  g       T_SEGMENT $
181   00000010  g       T_SEGMENT $
182
183   RELOCATION RECORDS FOR [D00000000]: (none)
184
185   RELOCATION RECORDS FOR [D00008000]: (none)
186
187   RELOCATION RECORDS FOR [T_SEGMENT]: (none)
188
189   Disassembly of section D00000000:
190   ...
191   00008000 ($+)7ff0 linkw fp,#-4
192   00008004 ($+)7ff4 nop
193   00008006 ($+)7ff6 movel #99,d0
194   00008008 ($+)7ff8 cmpl fp@(-4),d0
195   0000800c ($+)7ffc blts 00008014 ($+)8004
196   0000800e ($+)7ffe addql #1,fp@(-4)
197   00008012 ($+)8002 bras 00008006 ($+)7ff6
198   00008014 ($+)8004 unlk fp
199   00008016 ($+)8006 rts
200   ...  */
201
202static void
203tekhex_init (void)
204{
205  unsigned int i;
206  static bfd_boolean inited = FALSE;
207  int val;
208
209  if (! inited)
210    {
211      inited = TRUE;
212      hex_init ();
213      val = 0;
214      for (i = 0; i < 10; i++)
215	sum_block[i + '0'] = val++;
216
217      for (i = 'A'; i <= 'Z'; i++)
218	sum_block[i] = val++;
219
220      sum_block['$'] = val++;
221      sum_block['%'] = val++;
222      sum_block['.'] = val++;
223      sum_block['_'] = val++;
224      for (i = 'a'; i <= 'z'; i++)
225	sum_block[i] = val++;
226    }
227}
228
229/* The maximum number of bytes on a line is FF.  */
230#define MAXCHUNK 0xff
231/* The number of bytes we fit onto a line on output.  */
232#define CHUNK 21
233
234/* We cannot output our tekhexords as we see them, we have to glue them
235   together, this is done in this structure : */
236
237struct tekhex_data_list_struct
238{
239  unsigned char *data;
240  bfd_vma where;
241  bfd_size_type size;
242  struct tekhex_data_list_struct *next;
243
244};
245typedef struct tekhex_data_list_struct tekhex_data_list_type;
246
247#define CHUNK_MASK 0x1fff
248
249struct data_struct
250{
251  char chunk_data[CHUNK_MASK + 1];
252  char chunk_init[CHUNK_MASK + 1];
253  bfd_vma vma;
254  struct data_struct *next;
255};
256
257typedef struct tekhex_data_struct
258{
259  tekhex_data_list_type *head;
260  unsigned int type;
261  struct tekhex_symbol_struct *symbols;
262  struct data_struct *data;
263} tdata_type;
264
265#define enda(x) (x->vma + x->size)
266
267static bfd_boolean
268getvalue (char **srcp, bfd_vma *valuep)
269{
270  char *src = *srcp;
271  bfd_vma value = 0;
272  unsigned int len;
273
274  if (!ISHEX (*src))
275    return FALSE;
276
277  len = hex_value (*src++);
278  if (len == 0)
279    len = 16;
280  while (len--)
281    {
282      if (!ISHEX (*src))
283	return FALSE;
284      value = value << 4 | hex_value (*src++);
285    }
286
287  *srcp = src;
288  *valuep = value;
289  return TRUE;
290}
291
292static bfd_boolean
293getsym (char *dstp, char **srcp, unsigned int *lenp)
294{
295  char *src = *srcp;
296  unsigned int i;
297  unsigned int len;
298
299  if (!ISHEX (*src))
300    return FALSE;
301
302  len = hex_value (*src++);
303  if (len == 0)
304    len = 16;
305  for (i = 0; i < len; i++)
306    dstp[i] = src[i];
307  dstp[i] = 0;
308  *srcp = src + i;
309  *lenp = len;
310  return TRUE;
311}
312
313static struct data_struct *
314find_chunk (bfd *abfd, bfd_vma vma)
315{
316  struct data_struct *d = abfd->tdata.tekhex_data->data;
317
318  vma &= ~CHUNK_MASK;
319  while (d && (d->vma) != vma)
320    d = d->next;
321
322  if (!d)
323    {
324      /* No chunk for this address, so make one up.  */
325      d = bfd_zalloc (abfd, (bfd_size_type) sizeof (struct data_struct));
326
327      if (!d)
328	return NULL;
329
330      d->next = abfd->tdata.tekhex_data->data;
331      d->vma = vma;
332      abfd->tdata.tekhex_data->data = d;
333    }
334  return d;
335}
336
337static void
338insert_byte (bfd *abfd, int value, bfd_vma addr)
339{
340  /* Find the chunk that this byte needs and put it in.  */
341  struct data_struct *d = find_chunk (abfd, addr);
342
343  d->chunk_data[addr & CHUNK_MASK] = value;
344  d->chunk_init[addr & CHUNK_MASK] = 1;
345}
346
347/* The first pass is to find the names of all the sections, and see
348  how big the data is.  */
349
350static bfd_boolean
351first_phase (bfd *abfd, int type, char *src)
352{
353  asection *section = bfd_abs_section_ptr;
354  unsigned int len;
355  bfd_vma val;
356  char sym[17];			/* A symbol can only be 16chars long.  */
357
358  switch (type)
359    {
360    case '6':
361      /* Data record - read it and store it.  */
362      {
363	bfd_vma addr;
364
365	if (!getvalue (&src, &addr))
366	  return FALSE;
367
368	while (*src)
369	  {
370	    insert_byte (abfd, HEX (src), addr);
371	    src += 2;
372	    addr++;
373	  }
374      }
375
376      return TRUE;
377    case '3':
378      /* Symbol record, read the segment.  */
379      if (!getsym (sym, &src, &len))
380	return FALSE;
381      section = bfd_get_section_by_name (abfd, sym);
382      if (section == NULL)
383	{
384	  char *n = bfd_alloc (abfd, (bfd_size_type) len + 1);
385
386	  if (!n)
387	    return FALSE;
388	  memcpy (n, sym, len + 1);
389	  section = bfd_make_section (abfd, n);
390	}
391      while (*src)
392	{
393	  switch (*src)
394	    {
395	    case '1':		/* Section range.  */
396	      src++;
397	      if (!getvalue (&src, &section->vma))
398		return FALSE;
399	      if (!getvalue (&src, &val))
400		return FALSE;
401	      section->size = val - section->vma;
402	      section->flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC;
403	      break;
404	    case '0':
405	    case '2':
406	    case '3':
407	    case '4':
408	    case '6':
409	    case '7':
410	    case '8':
411	      /* Symbols, add to section.  */
412	      {
413		bfd_size_type amt = sizeof (tekhex_symbol_type);
414		tekhex_symbol_type *new = bfd_alloc (abfd, amt);
415		char stype = (*src);
416
417		if (!new)
418		  return FALSE;
419		new->symbol.the_bfd = abfd;
420		src++;
421		abfd->symcount++;
422		abfd->flags |= HAS_SYMS;
423		new->prev = abfd->tdata.tekhex_data->symbols;
424		abfd->tdata.tekhex_data->symbols = new;
425		if (!getsym (sym, &src, &len))
426		  return FALSE;
427		new->symbol.name = bfd_alloc (abfd, (bfd_size_type) len + 1);
428		if (!new->symbol.name)
429		  return FALSE;
430		memcpy ((char *) (new->symbol.name), sym, len + 1);
431		new->symbol.section = section;
432		if (stype <= '4')
433		  new->symbol.flags = (BSF_GLOBAL | BSF_EXPORT);
434		else
435		  new->symbol.flags = BSF_LOCAL;
436		if (!getvalue (&src, &val))
437		  return FALSE;
438		new->symbol.value = val - section->vma;
439		break;
440	      }
441	    default:
442	      return FALSE;
443	    }
444	}
445    }
446
447  return TRUE;
448}
449
450/* Pass over a tekhex, calling one of the above functions on each
451   record.  */
452
453static bfd_boolean
454pass_over (bfd *abfd, bfd_boolean (*func) (bfd *, int, char *))
455{
456  unsigned int chars_on_line;
457  bfd_boolean eof = FALSE;
458
459  /* To the front of the file.  */
460  if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
461    return FALSE;
462  while (! eof)
463    {
464      char src[MAXCHUNK];
465      char type;
466
467      /* Find first '%'.  */
468      eof = (bfd_boolean) (bfd_bread (src, (bfd_size_type) 1, abfd) != 1);
469      while (*src != '%' && !eof)
470	eof = (bfd_boolean) (bfd_bread (src, (bfd_size_type) 1, abfd) != 1);
471
472      if (eof)
473	break;
474
475      /* Fetch the type and the length and the checksum.  */
476      if (bfd_bread (src, (bfd_size_type) 5, abfd) != 5)
477	return FALSE;
478
479      type = src[2];
480
481      if (!ISHEX (src[0]) || !ISHEX (src[1]))
482	break;
483
484      /* Already read five chars.  */
485      chars_on_line = HEX (src) - 5;
486
487      if (chars_on_line >= MAXCHUNK)
488	return FALSE;
489
490      if (bfd_bread (src, (bfd_size_type) chars_on_line, abfd) != chars_on_line)
491	return FALSE;
492
493      /* Put a null at the end.  */
494      src[chars_on_line] = 0;
495
496      if (!func (abfd, type, src))
497	return FALSE;
498    }
499
500  return TRUE;
501}
502
503static long
504tekhex_canonicalize_symtab (bfd *abfd, asymbol **table)
505{
506  tekhex_symbol_type *p = abfd->tdata.tekhex_data->symbols;
507  unsigned int c = bfd_get_symcount (abfd);
508
509  table[c] = 0;
510  while (p)
511    {
512      table[--c] = &(p->symbol);
513      p = p->prev;
514    }
515
516  return bfd_get_symcount (abfd);
517}
518
519static long
520tekhex_get_symtab_upper_bound (bfd *abfd)
521{
522  return (abfd->symcount + 1) * (sizeof (struct tekhex_asymbol_struct *));
523
524}
525
526static bfd_boolean
527tekhex_mkobject (bfd *abfd)
528{
529  tdata_type *tdata;
530
531  tdata = bfd_alloc (abfd, (bfd_size_type) sizeof (tdata_type));
532  if (!tdata)
533    return FALSE;
534  abfd->tdata.tekhex_data = tdata;
535  tdata->type = 1;
536  tdata->head =  NULL;
537  tdata->symbols = NULL;
538  tdata->data = NULL;
539  return TRUE;
540}
541
542/* Return TRUE if the file looks like it's in TekHex format. Just look
543   for a percent sign and some hex digits.  */
544
545static const bfd_target *
546tekhex_object_p (bfd *abfd)
547{
548  char b[4];
549
550  tekhex_init ();
551
552  if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
553      || bfd_bread (b, (bfd_size_type) 4, abfd) != 4)
554    return NULL;
555
556  if (b[0] != '%' || !ISHEX (b[1]) || !ISHEX (b[2]) || !ISHEX (b[3]))
557    return NULL;
558
559  tekhex_mkobject (abfd);
560
561  if (!pass_over (abfd, first_phase))
562    return NULL;
563
564  return abfd->xvec;
565}
566
567static void
568move_section_contents (bfd *abfd,
569		       asection *section,
570		       const void * locationp,
571		       file_ptr offset,
572		       bfd_size_type count,
573		       bfd_boolean get)
574{
575  bfd_vma addr;
576  char *location = (char *) locationp;
577  bfd_vma prev_number = 1;	/* Nothing can have this as a high bit.  */
578  struct data_struct *d = NULL;
579
580  BFD_ASSERT (offset == 0);
581  for (addr = section->vma; count != 0; count--, addr++)
582    {
583      /* Get high bits of address.  */
584      bfd_vma chunk_number = addr & ~(bfd_vma) CHUNK_MASK;
585      bfd_vma low_bits = addr & CHUNK_MASK;
586
587      if (chunk_number != prev_number)
588	/* Different chunk, so move pointer. */
589	d = find_chunk (abfd, chunk_number);
590
591      if (get)
592	{
593	  if (d->chunk_init[low_bits])
594	    *location = d->chunk_data[low_bits];
595	  else
596	    *location = 0;
597	}
598      else
599	{
600	  d->chunk_data[low_bits] = *location;
601	  d->chunk_init[low_bits] = (*location != 0);
602	}
603
604      location++;
605    }
606}
607
608static bfd_boolean
609tekhex_get_section_contents (bfd *abfd,
610			     asection *section,
611			     void * locationp,
612			     file_ptr offset,
613			     bfd_size_type count)
614{
615  if (section->flags & (SEC_LOAD | SEC_ALLOC))
616    {
617      move_section_contents (abfd, section, locationp, offset, count, TRUE);
618      return TRUE;
619    }
620
621  return FALSE;
622}
623
624static bfd_boolean
625tekhex_set_arch_mach (bfd *abfd,
626		      enum bfd_architecture arch,
627		      unsigned long machine)
628{
629  return bfd_default_set_arch_mach (abfd, arch, machine);
630}
631
632/* We have to save up all the Tekhexords for a splurge before output.  */
633
634static bfd_boolean
635tekhex_set_section_contents (bfd *abfd,
636			     sec_ptr section,
637			     const void * locationp,
638			     file_ptr offset,
639			     bfd_size_type bytes_to_do)
640{
641  if (! abfd->output_has_begun)
642    {
643      /* The first time around, allocate enough sections to hold all the chunks.  */
644      asection *s = abfd->sections;
645      bfd_vma vma;
646
647      for (s = abfd->sections; s; s = s->next)
648	{
649	  if (s->flags & SEC_LOAD)
650	    {
651	      for (vma = s->vma & ~(bfd_vma) CHUNK_MASK;
652		   vma < s->vma + s->size;
653		   vma += CHUNK_MASK)
654		find_chunk (abfd, vma);
655	    }
656	}
657    }
658
659  if (section->flags & (SEC_LOAD | SEC_ALLOC))
660    {
661      move_section_contents (abfd, section, locationp, offset, bytes_to_do,
662			     FALSE);
663      return TRUE;
664    }
665
666  return FALSE;
667}
668
669static void
670writevalue (char **dst, bfd_vma value)
671{
672  char *p = *dst;
673  int len;
674  int shift;
675
676  for (len = 8, shift = 28; shift; shift -= 4, len--)
677    {
678      if ((value >> shift) & 0xf)
679	{
680	  *p++ = len + '0';
681	  while (len)
682	    {
683	      *p++ = digs[(value >> shift) & 0xf];
684	      shift -= 4;
685	      len--;
686	    }
687	  *dst = p;
688	  return;
689
690	}
691    }
692  *p++ = '1';
693  *p++ = '0';
694  *dst = p;
695}
696
697static void
698writesym (char **dst, const char *sym)
699{
700  char *p = *dst;
701  int len = (sym ? strlen (sym) : 0);
702
703  if (len >= 16)
704    {
705      *p++ = '0';
706      len = 16;
707    }
708  else
709    {
710      if (len == 0)
711	{
712	  *p++ = '1';
713	  sym = "$";
714	  len = 1;
715	}
716      else
717	*p++ = digs[len];
718    }
719
720  while (len--)
721    *p++ = *sym++;
722
723  *dst = p;
724}
725
726static void
727out (bfd *abfd, int type, char *start, char *end)
728{
729  int sum = 0;
730  char *s;
731  char front[6];
732  bfd_size_type wrlen;
733
734  front[0] = '%';
735  TOHEX (front + 1, end - start + 5);
736  front[3] = type;
737
738  for (s = start; s < end; s++)
739    sum += sum_block[(unsigned char) *s];
740
741  sum += sum_block[(unsigned char) front[1]];	/* Length.  */
742  sum += sum_block[(unsigned char) front[2]];
743  sum += sum_block[(unsigned char) front[3]];	/* Type.  */
744  TOHEX (front + 4, sum);
745  if (bfd_bwrite (front, (bfd_size_type) 6, abfd) != 6)
746    abort ();
747  end[0] = '\n';
748  wrlen = end - start + 1;
749  if (bfd_bwrite (start, wrlen, abfd) != wrlen)
750    abort ();
751}
752
753static bfd_boolean
754tekhex_write_object_contents (bfd *abfd)
755{
756  char buffer[100];
757  asymbol **p;
758  asection *s;
759  struct data_struct *d;
760
761  tekhex_init ();
762
763  /* And the raw data.  */
764  for (d = abfd->tdata.tekhex_data->data;
765       d != NULL;
766       d = d->next)
767    {
768      int low;
769
770      const int span = 32;
771      int addr;
772
773      /* Write it in blocks of 32 bytes.  */
774      for (addr = 0; addr < CHUNK_MASK + 1; addr += span)
775	{
776	  int need = 0;
777
778	  /* Check to see if necessary.  */
779	  for (low = 0; !need && low < span; low++)
780	    if (d->chunk_init[addr + low])
781	      need = 1;
782
783	  if (need)
784	    {
785	      char *dst = buffer;
786
787	      writevalue (&dst, addr + d->vma);
788	      for (low = 0; low < span; low++)
789		{
790		  TOHEX (dst, d->chunk_data[addr + low]);
791		  dst += 2;
792		}
793	      out (abfd, '6', buffer, dst);
794	    }
795	}
796    }
797
798  /* Write all the section headers for the sections.  */
799  for (s = abfd->sections; s != NULL; s = s->next)
800    {
801      char *dst = buffer;
802
803      writesym (&dst, s->name);
804      *dst++ = '1';
805      writevalue (&dst, s->vma);
806      writevalue (&dst, s->vma + s->size);
807      out (abfd, '3', buffer, dst);
808    }
809
810  /* And the symbols.  */
811  if (abfd->outsymbols)
812    {
813      for (p = abfd->outsymbols; *p; p++)
814	{
815	  int section_code = bfd_decode_symclass (*p);
816
817	  if (section_code != '?')
818	    {
819	      /* Do not include debug symbols.  */
820	      asymbol *sym = *p;
821	      char *dst = buffer;
822
823	      writesym (&dst, sym->section->name);
824
825	      switch (section_code)
826		{
827		case 'A':
828		  *dst++ = '2';
829		  break;
830		case 'a':
831		  *dst++ = '6';
832		  break;
833		case 'D':
834		case 'B':
835		case 'O':
836		  *dst++ = '4';
837		  break;
838		case 'd':
839		case 'b':
840		case 'o':
841		  *dst++ = '8';
842		  break;
843		case 'T':
844		  *dst++ = '3';
845		  break;
846		case 't':
847		  *dst++ = '7';
848		  break;
849		case 'C':
850		case 'U':
851		  bfd_set_error (bfd_error_wrong_format);
852		  return FALSE;
853		}
854
855	      writesym (&dst, sym->name);
856	      writevalue (&dst, sym->value + sym->section->vma);
857	      out (abfd, '3', buffer, dst);
858	    }
859	}
860    }
861
862  /* And the terminator.  */
863  if (bfd_bwrite ("%0781010\n", (bfd_size_type) 9, abfd) != 9)
864    abort ();
865  return TRUE;
866}
867
868static int
869tekhex_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED,
870		       struct bfd_link_info *info ATTRIBUTE_UNUSED)
871{
872  return 0;
873}
874
875static asymbol *
876tekhex_make_empty_symbol (bfd *abfd)
877{
878  bfd_size_type amt = sizeof (struct tekhex_symbol_struct);
879  tekhex_symbol_type *new = bfd_zalloc (abfd, amt);
880
881  if (!new)
882    return NULL;
883  new->symbol.the_bfd = abfd;
884  new->prev =  NULL;
885  return &(new->symbol);
886}
887
888static void
889tekhex_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
890			asymbol *symbol,
891			symbol_info *ret)
892{
893  bfd_symbol_info (symbol, ret);
894}
895
896static void
897tekhex_print_symbol (bfd *abfd,
898		     void * filep,
899		     asymbol *symbol,
900		     bfd_print_symbol_type how)
901{
902  FILE *file = (FILE *) filep;
903
904  switch (how)
905    {
906    case bfd_print_symbol_name:
907      fprintf (file, "%s", symbol->name);
908      break;
909    case bfd_print_symbol_more:
910      break;
911
912    case bfd_print_symbol_all:
913      {
914	const char *section_name = symbol->section->name;
915
916	bfd_print_symbol_vandf (abfd, (void *) file, symbol);
917
918	fprintf (file, " %-5s %s",
919		 section_name, symbol->name);
920      }
921    }
922}
923
924#define	tekhex_close_and_cleanup                    _bfd_generic_close_and_cleanup
925#define tekhex_bfd_free_cached_info                 _bfd_generic_bfd_free_cached_info
926#define tekhex_new_section_hook                     _bfd_generic_new_section_hook
927#define tekhex_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
928#define tekhex_bfd_is_local_label_name               bfd_generic_is_local_label_name
929#define tekhex_get_lineno                           _bfd_nosymbols_get_lineno
930#define tekhex_find_nearest_line                    _bfd_nosymbols_find_nearest_line
931#define tekhex_find_inliner_info                    _bfd_nosymbols_find_inliner_info
932#define tekhex_bfd_make_debug_symbol                _bfd_nosymbols_bfd_make_debug_symbol
933#define tekhex_read_minisymbols                     _bfd_generic_read_minisymbols
934#define tekhex_minisymbol_to_symbol                 _bfd_generic_minisymbol_to_symbol
935#define tekhex_bfd_get_relocated_section_contents   bfd_generic_get_relocated_section_contents
936#define tekhex_bfd_relax_section                    bfd_generic_relax_section
937#define tekhex_bfd_gc_sections                      bfd_generic_gc_sections
938#define tekhex_bfd_merge_sections                   bfd_generic_merge_sections
939#define tekhex_bfd_is_group_section                 bfd_generic_is_group_section
940#define tekhex_bfd_discard_group                    bfd_generic_discard_group
941#define tekhex_section_already_linked               _bfd_generic_section_already_linked
942#define tekhex_bfd_link_hash_table_create           _bfd_generic_link_hash_table_create
943#define tekhex_bfd_link_hash_table_free             _bfd_generic_link_hash_table_free
944#define tekhex_bfd_link_add_symbols                 _bfd_generic_link_add_symbols
945#define tekhex_bfd_link_just_syms                   _bfd_generic_link_just_syms
946#define tekhex_bfd_final_link                       _bfd_generic_final_link
947#define tekhex_bfd_link_split_section               _bfd_generic_link_split_section
948#define tekhex_get_section_contents_in_window       _bfd_generic_get_section_contents_in_window
949
950const bfd_target tekhex_vec =
951{
952  "tekhex",			/* Name.  */
953  bfd_target_tekhex_flavour,
954  BFD_ENDIAN_UNKNOWN,		/* Target byte order.  */
955  BFD_ENDIAN_UNKNOWN,		/* Target headers byte order.  */
956  (EXEC_P |			/* Object flags.  */
957   HAS_SYMS | HAS_LINENO | HAS_DEBUG |
958   HAS_RELOC | HAS_LOCALS | WP_TEXT | D_PAGED),
959  (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS
960   | SEC_ALLOC | SEC_LOAD | SEC_RELOC),	/* Section flags.  */
961  0,				/* Leading underscore.  */
962  ' ',				/* AR_pad_char.  */
963  16,				/* AR_max_namelen.  */
964  bfd_getb64, bfd_getb_signed_64, bfd_putb64,
965  bfd_getb32, bfd_getb_signed_32, bfd_putb32,
966  bfd_getb16, bfd_getb_signed_16, bfd_putb16,	/* Data.  */
967  bfd_getb64, bfd_getb_signed_64, bfd_putb64,
968  bfd_getb32, bfd_getb_signed_32, bfd_putb32,
969  bfd_getb16, bfd_getb_signed_16, bfd_putb16,	/* Headers.  */
970
971  {
972    _bfd_dummy_target,
973    tekhex_object_p,		/* bfd_check_format.  */
974    _bfd_dummy_target,
975    _bfd_dummy_target,
976  },
977  {
978    bfd_false,
979    tekhex_mkobject,
980    _bfd_generic_mkarchive,
981    bfd_false,
982  },
983  {				/* bfd_write_contents.  */
984    bfd_false,
985    tekhex_write_object_contents,
986    _bfd_write_archive_contents,
987    bfd_false,
988  },
989
990  BFD_JUMP_TABLE_GENERIC (tekhex),
991  BFD_JUMP_TABLE_COPY (_bfd_generic),
992  BFD_JUMP_TABLE_CORE (_bfd_nocore),
993  BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
994  BFD_JUMP_TABLE_SYMBOLS (tekhex),
995  BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
996  BFD_JUMP_TABLE_WRITE (tekhex),
997  BFD_JUMP_TABLE_LINK (tekhex),
998  BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
999
1000  NULL,
1001
1002  NULL
1003};
1004