19990502 sourceware importbinu_ss_19990502

1 files changed, 1065 insertions, 0 deletions

diff --git a/bfd/tekhex.c b/bfd/tekhex.c
new file mode 100644
index 00000000000..c88fe2dbaf2
--- /dev/null
+++ b/bfd/tekhex.c
@@ -0,0 +1,1065 @@
+/* BFD backend for Extended Tektronix Hex Format  objects.
+   Copyright (C) 1992, 93, 94, 95, 96, 1997 Free Software Foundation, Inc.
+   Written by Steve Chamberlain of Cygnus Support <sac@cygnus.com>.
+
+This file is part of BFD, the Binary File Descriptor library.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+/*
+SUBSECTION
+	Tektronix Hex Format handling
+
+DESCRIPTION
+	
+	Tek Hex records can hold symbols and data, but not
+	relocations. Their main application is communication with
+	devices like PROM programmers and ICE equipment.
+	
+	It seems that the sections are descibed as being really big,
+        the example I have says that the text section is 0..ffffffff.
+	BFD would barf with this, many apps would try to alloc 4GB to
+	read in the file.
+
+	Tex Hex may contain many sections, but the data which comes in
+	has no tag saying which section it belongs to, so we create
+	one section for each block of data, called "blknnnn" which we
+	stick all the data into.
+
+	TekHex may come out of 	order and there is no header, so an
+	initial scan is required  to discover the minimum and maximum
+	addresses used to create the vma and size of the sections we
+	create.
+	We read in the data into pages of CHUNK_MASK+1 size and read
+	them out from that whenever we need to.
+
+	Any number of sections may be created for output, we save them
+	up and output them when it's time to close the bfd.
+
+
+	A TekHex record looks like:
+EXAMPLE
+	%<block length><type><checksum><stuff><cr>
+	
+DESCRIPTION
+	Where
+	o length
+	is the number of bytes in the record not including the % sign.
+	o type
+	is one of:
+	3) symbol record
+	6) data record
+	8) termination record
+	
+
+The data can come out of order, and may be discontigous. This is a
+serial protocol, so big files are unlikely, so we keep a list of 8k chunks
+*/
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "libbfd.h"
+#include "libiberty.h"
+
+typedef struct
+  {
+    bfd_vma low;
+    bfd_vma high;
+  } addr_range_type;
+
+typedef struct tekhex_symbol_struct
+  {
+
+    asymbol symbol;
+    struct tekhex_symbol_struct *prev;
+
+  } tekhex_symbol_type;
+
+static const char digs[] = "0123456789ABCDEF";
+
+static char sum_block[256];
+
+#define NOT_HEX 20
+#define NIBBLE(x) hex_value(x)
+#define HEX(buffer) ((NIBBLE((buffer)[0])<<4) + NIBBLE((buffer)[1]))
+#define TOHEX(d,x) \
+(d)[1] = digs[(x) & 0xf]; \
+(d)[0] = digs[((x)>>4)&0xf];
+#define	ISHEX(x)  hex_p(x)
+
+static void tekhex_init PARAMS ((void));
+static bfd_vma getvalue PARAMS ((char **));
+static void tekhex_print_symbol
+ PARAMS ((bfd *, PTR, asymbol *, bfd_print_symbol_type));
+static void tekhex_get_symbol_info PARAMS ((bfd *, asymbol *, symbol_info *));
+static asymbol *tekhex_make_empty_symbol PARAMS ((bfd *));
+static int tekhex_sizeof_headers PARAMS ((bfd *, boolean));
+static boolean tekhex_write_object_contents PARAMS ((bfd *));
+static void out PARAMS ((bfd *, int, char *, char *));
+static void writesym PARAMS ((char **, CONST char *));
+static void writevalue PARAMS ((char **, bfd_vma));
+static boolean tekhex_set_section_contents
+ PARAMS ((bfd*, sec_ptr, PTR, file_ptr, bfd_size_type));
+static boolean tekhex_set_arch_mach
+ PARAMS ((bfd *, enum bfd_architecture, unsigned long));
+static boolean tekhex_get_section_contents
+ PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type));
+static void move_section_contents
+ PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type, boolean));
+static const bfd_target *tekhex_object_p PARAMS ((bfd *));
+static boolean tekhex_mkobject PARAMS ((bfd *));
+static long tekhex_get_symtab_upper_bound PARAMS ((bfd *));
+static long tekhex_get_symtab PARAMS ((bfd *, asymbol **));
+static void pass_over PARAMS ((bfd *, void (*)(bfd*, int, char *)));
+static void first_phase PARAMS ((bfd *, int, char *));
+static void insert_byte PARAMS ((bfd *, int, bfd_vma));
+static struct data_struct *find_chunk PARAMS ((bfd *, bfd_vma));
+static unsigned int getsym PARAMS ((char *, char **));
+
+/*
+Here's an example
+%3A6C6480004E56FFFC4E717063B0AEFFFC6D0652AEFFFC60F24E5E4E75
+%1B3709T_SEGMENT1108FFFFFFFF
+%2B3AB9T_SEGMENT7Dgcc_compiled$1087hello$c10
+%373829T_SEGMENT80int$t1$r1$$214741080char$t2$r2$0$12710
+%373769T_SEGMENT80long$int$t3$r1$$1080unsigned$int$t4$10
+%373CA9T_SEGMENT80long$unsigned$in1080short$int$t6$r1$10
+%373049T_SEGMENT80long$long$int$t71080short$unsigned$i10
+%373A29T_SEGMENT80long$long$unsign1080signed$char$t10$10
+%373D69T_SEGMENT80unsigned$char$t11080float$t12$r1$4$010
+%373D19T_SEGMENT80double$t13$r1$8$1080long$double$t14$10
+%2734D9T_SEGMENT8Bvoid$t15$151035_main10
+%2F3CA9T_SEGMENT81$1081$1681$1E81$21487main$F110
+%2832F9T_SEGMENT83i$18FFFFFFFC81$1481$214
+%07 8 10 10
+
+explanation:
+%3A6C6480004E56FFFC4E717063B0AEFFFC6D0652AEFFFC60F24E5E4E75
+ ^ ^^ ^     ^-data
+ | || +------ 4 char integer 0x8000
+ | |+-------- checksum
+ | +--------- type 6 (data record)
+ +----------- length 3a chars
+ <---------------------- 3a (58 chars) ------------------->
+
+%1B3709T_SEGMENT1108FFFFFFFF
+      ^         ^^ ^- 8 character integer 0xffffffff
+      |         |+-   1 character integer 0
+      |         +--   type 1 symbol (section definition)
+      +------------   9 char symbol T_SEGMENT
+
+%2B3AB9T_SEGMENT7Dgcc_compiled$1087hello$c10
+%373829T_SEGMENT80int$t1$r1$$214741080char$t2$r2$0$12710
+%373769T_SEGMENT80long$int$t3$r1$$1080unsigned$int$t4$10
+%373CA9T_SEGMENT80long$unsigned$in1080short$int$t6$r1$10
+%373049T_SEGMENT80long$long$int$t71080short$unsigned$i10
+%373A29T_SEGMENT80long$long$unsign1080signed$char$t10$10
+%373D69T_SEGMENT80unsigned$char$t11080float$t12$r1$4$010
+%373D19T_SEGMENT80double$t13$r1$8$1080long$double$t14$10
+%2734D9T_SEGMENT8Bvoid$t15$151035_main10
+%2F3CA9T_SEGMENT81$1081$1681$1E81$21487main$F110
+%2832F9T_SEGMENT83i$18FFFFFFFC81$1481$214
+%0781010
+
+Turns into
+sac@thepub$ ./objdump -dx -m m68k f
+
+f:     file format tekhex
+-----x--- 9/55728 -134219416 Sep 29 15:13 1995 f
+architecture: UNKNOWN!, flags 0x00000010:
+HAS_SYMS
+start address 0x00000000
+SECTION 0 [D00000000]	: size 00020000 vma 00000000 align 2**0
+ ALLOC, LOAD
+SECTION 1 [D00008000]	: size 00002001 vma 00008000 align 2**0
+
+SECTION 2 [T_SEGMENT]	: size ffffffff vma 00000000 align 2**0
+
+SYMBOL TABLE:
+00000000  g       T_SEGMENT gcc_compiled$
+00000000  g       T_SEGMENT hello$c
+00000000  g       T_SEGMENT int$t1$r1$$21474
+00000000  g       T_SEGMENT char$t2$r2$0$127
+00000000  g       T_SEGMENT long$int$t3$r1$$
+00000000  g       T_SEGMENT unsigned$int$t4$
+00000000  g       T_SEGMENT long$unsigned$in
+00000000  g       T_SEGMENT short$int$t6$r1$
+00000000  g       T_SEGMENT long$long$int$t7
+00000000  g       T_SEGMENT short$unsigned$i
+00000000  g       T_SEGMENT long$long$unsign
+00000000  g       T_SEGMENT signed$char$t10$
+00000000  g       T_SEGMENT unsigned$char$t1
+00000000  g       T_SEGMENT float$t12$r1$4$0
+00000000  g       T_SEGMENT double$t13$r1$8$
+00000000  g       T_SEGMENT long$double$t14$
+00000000  g       T_SEGMENT void$t15$15
+00000000  g       T_SEGMENT _main
+00000000  g       T_SEGMENT $
+00000000  g       T_SEGMENT $
+00000000  g       T_SEGMENT $
+00000010  g       T_SEGMENT $
+00000000  g       T_SEGMENT main$F1
+fcffffff  g       T_SEGMENT i$1
+00000000  g       T_SEGMENT $
+00000010  g       T_SEGMENT $
+
+
+RELOCATION RECORDS FOR [D00000000]: (none)
+
+RELOCATION RECORDS FOR [D00008000]: (none)
+
+RELOCATION RECORDS FOR [T_SEGMENT]: (none)
+
+Disassembly of section D00000000:
+...
+00008000 ($+)7ff0 linkw fp,#-4
+00008004 ($+)7ff4 nop
+00008006 ($+)7ff6 movel #99,d0
+00008008 ($+)7ff8 cmpl fp@(-4),d0
+0000800c ($+)7ffc blts 00008014 ($+)8004
+0000800e ($+)7ffe addql #1,fp@(-4)
+00008012 ($+)8002 bras 00008006 ($+)7ff6
+00008014 ($+)8004 unlk fp
+00008016 ($+)8006 rts
+...
+
+*/
+
+static void
+tekhex_init ()
+{
+  unsigned int i;
+  static boolean inited = false;
+  int val;
+
+  if (inited == false)
+    {
+      inited = true;
+      hex_init ();
+      val = 0;
+      for (i = 0; i < 10; i++)
+	{
+	  sum_block[i + '0'] = val++;
+	}
+      for (i = 'A'; i <= 'Z'; i++)
+	{
+	  sum_block[i] = val++;
+	}
+      sum_block['$'] = val++;
+      sum_block['%'] = val++;
+      sum_block['.'] = val++;
+      sum_block['_'] = val++;
+      for (i = 'a'; i <= 'z'; i++)
+	{
+	  sum_block[i] = val++;
+	}
+    }
+}
+
+/* The maximum number of bytes on a line is FF */
+#define MAXCHUNK 0xff
+/* The number of bytes we fit onto a line on output */
+#define CHUNK 21
+
+/* We cannot output our tekhexords as we see them, we have to glue them
+   together, this is done in this structure : */
+
+struct tekhex_data_list_struct
+{
+  unsigned char *data;
+  bfd_vma where;
+  bfd_size_type size;
+  struct tekhex_data_list_struct *next;
+
+};
+typedef struct tekhex_data_list_struct tekhex_data_list_type;
+
+#define CHUNK_MASK 0x1fff
+
+struct data_struct
+  {
+    char chunk_data[CHUNK_MASK + 1];
+    char chunk_init[CHUNK_MASK + 1];
+    bfd_vma vma;
+    struct data_struct *next;
+  };
+
+typedef struct tekhex_data_struct
+{
+  tekhex_data_list_type *head;
+  unsigned int type;
+  struct tekhex_symbol_struct *symbols;
+  struct data_struct *data;
+} tdata_type;
+
+#define enda(x) (x->vma + x->size)
+
+static bfd_vma
+getvalue (srcp)
+     char **srcp;
+{
+  char *src = *srcp;
+  bfd_vma value = 0;
+  unsigned int len = hex_value(*src++);
+
+  if (len == 0)
+    len = 16;
+  while (len--)
+    {
+      value = value << 4 | hex_value(*src++);
+    }
+  *srcp = src;
+  return value;
+}
+
+static unsigned int
+getsym (dstp, srcp)
+     char *dstp;
+     char **srcp;
+{
+  char *src = *srcp;
+  unsigned int i;
+  unsigned int len = hex_value(*src++);
+
+  if (len == 0)
+    len = 16;
+  for (i = 0; i < len; i++)
+    dstp[i] = src[i];
+  dstp[i] = 0;
+  *srcp = src + i;
+  return len;
+}
+
+static struct data_struct *
+find_chunk (abfd, vma)
+     bfd *abfd;
+     bfd_vma vma;
+{
+  struct data_struct *d = abfd->tdata.tekhex_data->data;
+
+  vma &= ~CHUNK_MASK;
+  while (d && (d->vma) != vma)
+    {
+      d = d->next;
+    }
+  if (!d)
+    {
+      char *sname = bfd_alloc (abfd, 12);
+
+      /* No chunk for this address, so make one up */
+      d = (struct data_struct *)
+	bfd_alloc (abfd, sizeof (struct data_struct));
+
+      if (!sname || !d)
+	return NULL;
+
+      memset (d->chunk_init, 0, CHUNK_MASK + 1);
+      memset (d->chunk_data, 0, CHUNK_MASK + 1);
+      d->next = abfd->tdata.tekhex_data->data;
+      d->vma = vma;
+      abfd->tdata.tekhex_data->data = d;
+    }
+  return d;
+}
+
+static void
+insert_byte (abfd, value, addr)
+     bfd *abfd;
+     int value;
+     bfd_vma addr;
+{
+  /* Find the chunk that this byte needs and put it in */
+  struct data_struct *d = find_chunk (abfd, addr);
+
+  d->chunk_data[addr & CHUNK_MASK] = value;
+  d->chunk_init[addr & CHUNK_MASK] = 1;
+}
+
+/* The first pass is to find the names of all the sections, and see
+  how big the data is */
+static void
+first_phase (abfd, type, src)
+     bfd *abfd;
+     int type;
+     char *src;
+{
+  asection *section = bfd_abs_section_ptr;
+  int len;
+  char sym[17];			/* A symbol can only be 16chars long */
+
+  switch (type)
+    {
+    case '6':
+      /* Data record - read it and store it */
+      {
+	bfd_vma addr = getvalue (&src);
+
+	while (*src)
+	  {
+	    insert_byte (abfd, HEX (src), addr);
+	    src += 2;
+	    addr++;
+	  }
+      }
+
+      return;
+    case '3':
+      /* Symbol record, read the segment */
+      len = getsym (sym, &src);
+      section = bfd_get_section_by_name (abfd, sym);
+      if (section == (asection *) NULL)
+	{
+	  char *n = bfd_alloc (abfd, len + 1);
+
+	  if (!n)
+	    abort();		/* FIXME */
+	  memcpy (n, sym, len + 1);
+	  section = bfd_make_section (abfd, n);
+	}
+      while (*src)
+	{
+	  switch (*src)
+	    {
+	    case '1':		/* section range */
+	      src++;
+	      section->vma = getvalue (&src);
+	      section->_raw_size = getvalue (&src) - section->vma;
+	      section->flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC;
+	      break;
+	    case '0':
+	    case '2':
+	    case '3':
+	    case '4':
+	    case '6':
+	    case '7':
+	    case '8':
+	      /* Symbols, add to section */
+	      {
+		tekhex_symbol_type *new =
+		(tekhex_symbol_type *) bfd_alloc (abfd,
+					       sizeof (tekhex_symbol_type));
+		char type = (*src);
+
+		if (!new)
+		  abort();	/* FIXME */
+		new->symbol.the_bfd = abfd;
+		src++;
+		abfd->symcount++;
+		abfd->flags |= HAS_SYMS;
+		new->prev = abfd->tdata.tekhex_data->symbols;
+		abfd->tdata.tekhex_data->symbols = new;
+		len = getsym (sym, &src);
+		new->symbol.name = bfd_alloc (abfd, len + 1);
+		if (!new->symbol.name)
+		  abort();	/* FIXME */
+		memcpy ((char *) (new->symbol.name), sym, len + 1);
+		new->symbol.section = section;
+		if (type <= '4')
+		  new->symbol.flags = (BSF_GLOBAL | BSF_EXPORT);
+		else
+		  new->symbol.flags = BSF_LOCAL;
+		new->symbol.value = getvalue (&src) - section->vma;
+	      }
+	    }
+	}
+    }
+}
+
+/* Pass over an tekhex, calling one of the above functions on each
+   record.  */
+
+static void
+pass_over (abfd, func)
+     bfd *abfd;
+     void (*func) PARAMS ((bfd *, int, char *));
+{
+  unsigned int chars_on_line;
+  boolean eof = false;
+
+  /* To the front of the file */
+  if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
+    abort ();
+  while (eof == false)
+    {
+      char buffer[MAXCHUNK];
+      char *src = buffer;
+      char type;
+
+      /* Find first '%' */
+      eof = (boolean) (bfd_read (src, 1, 1, abfd) != 1);
+      while (*src != '%' && !eof)
+	{
+	  eof = (boolean) (bfd_read (src, 1, 1, abfd) != 1);
+	}
+      if (eof)
+	break;
+      src++;
+
+      /* Fetch the type and the length and the checksum */
+      if (bfd_read (src, 1, 5, abfd) != 5)
+	abort (); /* FIXME */
+
+      type = src[2];
+
+      if (!ISHEX (src[0]) || !ISHEX (src[1]))
+	break;
+
+      chars_on_line = HEX (src) - 5;	/* Already read five char */
+
+      if (bfd_read (src, 1, chars_on_line, abfd) != chars_on_line)
+	abort (); /* FIXME */
+      src[chars_on_line] = 0;	/* put a null at the end */
+
+      func (abfd, type, src);
+    }
+
+}
+
+static long
+tekhex_get_symtab (abfd, table)
+     bfd *abfd;
+     asymbol **table;
+{
+  tekhex_symbol_type *p = abfd->tdata.tekhex_data->symbols;
+  unsigned int c = bfd_get_symcount (abfd);
+
+  table[c] = 0;
+  while (p)
+    {
+      table[--c] = &(p->symbol);
+      p = p->prev;
+    }
+
+  return bfd_get_symcount (abfd);
+}
+
+static long
+tekhex_get_symtab_upper_bound (abfd)
+     bfd *abfd;
+{
+  return (abfd->symcount + 1) * (sizeof (struct tekhex_asymbol_struct *));
+
+}
+
+static boolean
+tekhex_mkobject (abfd)
+     bfd *abfd;
+{
+  tdata_type *tdata = (tdata_type *) bfd_alloc (abfd, sizeof (tdata_type));
+
+  if (!tdata)
+    return false;
+  abfd->tdata.tekhex_data = tdata;
+  tdata->type = 1;
+  tdata->head = (tekhex_data_list_type *) NULL;
+  tdata->symbols = (struct tekhex_symbol_struct *) NULL;
+  tdata->data = (struct data_struct *) NULL;
+  return true;
+}
+
+/*
+  Return true if the file looks like it's in TekHex format. Just look
+  for a percent sign and some hex digits */
+
+static const bfd_target *
+tekhex_object_p (abfd)
+     bfd *abfd;
+{
+  char b[4];
+
+  tekhex_init ();
+
+  if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
+      || bfd_read (b, 1, 4, abfd) != 4)
+    return NULL;
+
+  if (b[0] != '%' || !ISHEX (b[1]) || !ISHEX (b[2]) || !ISHEX (b[3]))
+    return (const bfd_target *) NULL;
+
+  tekhex_mkobject (abfd);
+
+  pass_over (abfd, first_phase);
+  return abfd->xvec;
+}
+
+static void
+move_section_contents (abfd, section, locationp, offset, count, get)
+     bfd *abfd;
+     asection *section;
+     PTR locationp;
+     file_ptr offset;
+     bfd_size_type count;
+     boolean get;
+{
+  bfd_vma addr;
+  char *location = (char *) locationp;
+  bfd_vma prev_number = 1;	/* Nothing can have this as a high bit*/
+  struct data_struct *d = (struct data_struct *) NULL;
+
+  for (addr = section->vma; count != 0; count--, addr++)
+    {
+
+      bfd_vma chunk_number = addr & ~CHUNK_MASK;	/* Get high bits of address */
+      bfd_vma low_bits = addr & CHUNK_MASK;
+
+      if (chunk_number != prev_number)
+	{
+	  /* Different chunk, so move pointer */
+	  d = find_chunk (abfd, chunk_number);
+	}
+
+      if (get)
+	{
+	  if (d->chunk_init[low_bits])
+	    {
+	      *location = d->chunk_data[low_bits];
+	    }
+	  else
+	    {
+	      *location = 0;
+	    }
+	}
+      else
+	{
+	  d->chunk_data[low_bits] = *location;
+	  d->chunk_init[low_bits] = (*location != 0);
+	}
+
+      location++;
+
+    }
+
+}
+
+static boolean
+tekhex_get_section_contents (abfd, section, locationp, offset, count)
+     bfd *abfd;
+     asection *section;
+     PTR locationp;
+     file_ptr offset;
+     bfd_size_type count;
+{
+  if (section->flags & (SEC_LOAD | SEC_ALLOC))
+    {
+      move_section_contents (abfd, section, locationp, offset, count, true);
+      return true;
+    }
+  else
+    return false;
+}
+
+static boolean
+tekhex_set_arch_mach (abfd, arch, machine)
+     bfd *abfd;
+     enum bfd_architecture arch;
+     unsigned long machine;
+{
+  return bfd_default_set_arch_mach (abfd, arch, machine);
+}
+
+/* we have to save up all the Tekhexords for a splurge before output,
+    */
+
+static boolean
+tekhex_set_section_contents (abfd, section, locationp, offset, bytes_to_do)
+     bfd *abfd;
+     sec_ptr section;
+     PTR locationp;
+     file_ptr offset;
+     bfd_size_type bytes_to_do;
+{
+
+  if (abfd->output_has_begun == false)
+    {
+      /* The first time around, allocate enough sections to hold all the chunks */
+      asection *s = abfd->sections;
+      bfd_vma vma;
+
+      for (s = abfd->sections; s; s = s->next)
+	{
+	  if (s->flags & SEC_LOAD)
+	    {
+	      for (vma = s->vma & ~CHUNK_MASK;
+		   vma < s->vma + s->_raw_size;
+		   vma += CHUNK_MASK)
+		find_chunk (abfd, vma);
+	    }
+	}
+
+    }
+  if (section->flags & (SEC_LOAD | SEC_ALLOC))
+    {
+      move_section_contents (abfd, section, locationp, offset, bytes_to_do, false);
+      return true;
+    }
+  else
+    return false;
+
+}
+
+static void
+writevalue (dst, value)
+     char **dst;
+     bfd_vma value;
+{
+  char *p = *dst;
+  int len;
+  int shift;
+
+  for (len = 8, shift = 28; shift; shift -= 4, len--)
+    {
+      if ((value >> shift) & 0xf)
+	{
+	  *p++ = len + '0';
+	  while (len)
+	    {
+	      *p++ = digs[(value >> shift) & 0xf];
+	      shift -= 4;
+	      len--;
+	    }
+	  *dst = p;
+	  return;
+
+	}
+    }
+  *p++ = '1';
+  *p++ = '0';
+  *dst = p;
+}
+
+static void
+writesym (dst, sym)
+     char **dst;
+     CONST char *sym;
+{
+  char *p = *dst;
+  int len = (sym ? strlen (sym) : 0);
+
+  if (len >= 16)
+    {
+      *p++ = '0';
+      len = 16;
+    }
+
+  else
+    {
+      if (len == 0)
+	{
+	  *p++ = '1';
+	  sym = "$";
+	  len = 1;
+	}
+      else
+	{
+	  *p++ = digs[len];
+	}
+    }
+
+  while (len--)
+    {
+      *p++ = *sym++;
+    }
+  *dst = p;
+}
+
+static void
+out (abfd, type, start, end)
+     bfd *abfd;
+     int type;
+     char *start;
+     char *end;
+{
+  int sum = 0;
+  char *s;
+  char front[6];
+  bfd_size_type wrlen;
+
+  front[0] = '%';
+  TOHEX (front + 1, end - start + 5);
+  front[3] = type;
+
+  for (s = start; s < end; s++)
+    {
+      sum += sum_block[(unsigned char) *s];
+    }
+
+  sum += sum_block[(unsigned char) front[1]];	/*  length */
+  sum += sum_block[(unsigned char) front[2]];
+  sum += sum_block[(unsigned char) front[3]];	/* type */
+  TOHEX (front + 4, sum);
+  if (bfd_write (front, 1, 6, abfd) != 6)
+    abort ();
+  end[0] = '\n';
+  wrlen = end - start + 1;
+  if (bfd_write (start, 1, wrlen, abfd) != wrlen)
+    abort ();
+}
+
+static boolean
+tekhex_write_object_contents (abfd)
+     bfd *abfd;
+{
+  int bytes_written;
+  char buffer[100];
+  asymbol **p;
+  asection *s;
+  struct data_struct *d;
+
+  tekhex_init ();
+
+  bytes_written = 0;
+
+  /* And the raw data */
+  for (d = abfd->tdata.tekhex_data->data;
+       d != (struct data_struct *) NULL;
+       d = d->next)
+    {
+      int low;
+
+      CONST int span = 32;
+      int addr;
+
+      /* Write it in blocks of 32 bytes */
+
+      for (addr = 0; addr < CHUNK_MASK + 1; addr += span)
+	{
+	  int need = 0;
+
+	  /* Check to see if necessary */
+	  for (low = 0; !need && low < span; low++)
+	    {
+	      if (d->chunk_init[addr + low])
+		need = 1;
+	    }
+	  if (need)
+	    {
+	      char *dst = buffer;
+
+	      writevalue (&dst, addr + d->vma);
+	      for (low = 0; low < span; low++)
+		{
+		  TOHEX (dst, d->chunk_data[addr + low]);
+		  dst += 2;
+		}
+	      out (abfd, '6', buffer, dst);
+	    }
+	}
+    }
+  /* write all the section headers for the sections */
+  for (s = abfd->sections; s != (asection *) NULL; s = s->next)
+    {
+      char *dst = buffer;
+
+      writesym (&dst, s->name);
+      *dst++ = '1';
+      writevalue (&dst, s->vma);
+      writevalue (&dst, s->vma + s->_raw_size);
+      out (abfd, '3', buffer, dst);
+    }
+
+  /* And the symbols */
+  if (abfd->outsymbols)
+    {
+      for (p = abfd->outsymbols; *p; p++)
+	{
+	  int section_code = bfd_decode_symclass (*p);
+
+	  if (section_code != '?')
+	    {			/* do not include debug symbols */
+	      asymbol *s = *p;
+	      char *dst = buffer;
+
+	      writesym (&dst, s->section->name);
+
+	      switch (section_code)
+		{
+		case 'A':
+		  *dst++ = '2';
+		  break;
+		case 'a':
+		  *dst++ = '6';
+		  break;
+		case 'D':
+		case 'B':
+		case 'O':
+		  *dst++ = '4';
+		  break;
+		case 'd':
+		case 'b':
+		case 'o':
+		  *dst++ = '8';
+		  break;
+		case 'T':
+		  *dst++ = '3';
+		  break;
+		case 't':
+		  *dst++ = '7';
+		  break;
+		case 'C':
+		case 'U':
+		  bfd_set_error (bfd_error_wrong_format);
+		  return false;
+		}
+
+	      writesym (&dst, s->name);
+	      writevalue (&dst, s->value + s->section->vma);
+	      out (abfd, '3', buffer, dst);
+	    }
+	}
+    }
+
+  /* And the terminator */
+  if (bfd_write ("%0781010\n", 1, 9, abfd) != 9)
+    abort ();
+  return true;
+}
+
+static int
+tekhex_sizeof_headers (abfd, exec)
+     bfd *abfd;
+     boolean exec;
+
+{
+  return 0;
+}
+
+static asymbol *
+tekhex_make_empty_symbol (abfd)
+     bfd *abfd;
+{
+  tekhex_symbol_type *new =
+  (tekhex_symbol_type *) bfd_zalloc (abfd, sizeof (struct tekhex_symbol_struct));
+
+  if (!new)
+    return NULL;
+  new->symbol.the_bfd = abfd;
+  new->prev = (struct tekhex_symbol_struct *) NULL;
+  return &(new->symbol);
+}
+
+static void
+tekhex_get_symbol_info (ignore_abfd, symbol, ret)
+     bfd *ignore_abfd;
+     asymbol *symbol;
+     symbol_info *ret;
+{
+  bfd_symbol_info (symbol, ret);
+}
+
+static void
+tekhex_print_symbol (ignore_abfd, filep, symbol, how)
+     bfd *ignore_abfd;
+     PTR filep;
+     asymbol *symbol;
+     bfd_print_symbol_type how;
+{
+  FILE *file = (FILE *) filep;
+
+  switch (how)
+    {
+    case bfd_print_symbol_name:
+      fprintf (file, "%s", symbol->name);
+      break;
+    case bfd_print_symbol_more:
+      break;
+
+    case bfd_print_symbol_all:
+      {
+	CONST char *section_name = symbol->section->name;
+
+	bfd_print_symbol_vandf ((PTR) file, symbol);
+
+	fprintf (file, " %-5s %s",
+		 section_name,
+		 symbol->name);
+      }
+    }
+}
+
+#define	tekhex_close_and_cleanup _bfd_generic_close_and_cleanup
+#define tekhex_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
+#define tekhex_new_section_hook _bfd_generic_new_section_hook
+
+#define tekhex_bfd_is_local_label_name bfd_generic_is_local_label_name
+#define tekhex_get_lineno _bfd_nosymbols_get_lineno
+#define tekhex_find_nearest_line _bfd_nosymbols_find_nearest_line
+#define tekhex_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
+#define tekhex_read_minisymbols _bfd_generic_read_minisymbols
+#define tekhex_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
+
+#define tekhex_bfd_get_relocated_section_contents \
+  bfd_generic_get_relocated_section_contents
+#define tekhex_bfd_relax_section bfd_generic_relax_section
+#define tekhex_bfd_gc_sections bfd_generic_gc_sections
+#define tekhex_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
+#define tekhex_bfd_link_add_symbols _bfd_generic_link_add_symbols
+#define tekhex_bfd_final_link _bfd_generic_final_link
+#define tekhex_bfd_link_split_section _bfd_generic_link_split_section
+
+#define tekhex_get_section_contents_in_window \
+  _bfd_generic_get_section_contents_in_window
+
+const bfd_target tekhex_vec =
+{
+  "tekhex",			/* name */
+  bfd_target_tekhex_flavour,
+  BFD_ENDIAN_UNKNOWN,		/* target byte order */
+  BFD_ENDIAN_UNKNOWN,		/* target headers byte order */
+  (EXEC_P |			/* object flags */
+   HAS_SYMS | HAS_LINENO | HAS_DEBUG | HAS_RELOC | HAS_LOCALS |
+   WP_TEXT | D_PAGED),
+  (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS
+   | SEC_ALLOC | SEC_LOAD | SEC_RELOC),	/* section flags */
+  0,				/* leading underscore */
+  ' ',				/* ar_pad_char */
+  16,				/* ar_max_namelen */
+  bfd_getb64, bfd_getb_signed_64, bfd_putb64,
+  bfd_getb32, bfd_getb_signed_32, bfd_putb32,
+  bfd_getb16, bfd_getb_signed_16, bfd_putb16,	/* data */
+  bfd_getb64, bfd_getb_signed_64, bfd_putb64,
+  bfd_getb32, bfd_getb_signed_32, bfd_putb32,
+  bfd_getb16, bfd_getb_signed_16, bfd_putb16,	/* hdrs */
+
+  {
+    _bfd_dummy_target,
+    tekhex_object_p,		/* bfd_check_format */
+    _bfd_dummy_target,
+    _bfd_dummy_target,
+  },
+  {
+    bfd_false,
+    tekhex_mkobject,
+    _bfd_generic_mkarchive,
+    bfd_false,
+  },
+  {				/* bfd_write_contents */
+    bfd_false,
+    tekhex_write_object_contents,
+    _bfd_write_archive_contents,
+    bfd_false,
+  },
+
+  BFD_JUMP_TABLE_GENERIC (tekhex),
+  BFD_JUMP_TABLE_COPY (_bfd_generic),
+  BFD_JUMP_TABLE_CORE (_bfd_nocore),
+  BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
+  BFD_JUMP_TABLE_SYMBOLS (tekhex),
+  BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
+  BFD_JUMP_TABLE_WRITE (tekhex),
+  BFD_JUMP_TABLE_LINK (tekhex),
+  BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
+
+  (PTR) 0
+};