⟦a721f7763⟧

TextFile

/* Program to translate binary format files from HP-UX to GNU.
   Input formats for HP 9000 series 200/300 only.
   Copyright (C) 1988 Free Software Foundation, Inc.

		       NO WARRANTY

  BECAUSE THIS PROGRAM IS LICENSED FREE OF CHARGE, WE PROVIDE ABSOLUTELY
NO WARRANTY, TO THE EXTENT PERMITTED BY APPLICABLE STATE LAW.  EXCEPT
WHEN OTHERWISE STATED IN WRITING, FREE SOFTWARE FOUNDATION, INC,
RICHARD M. STALLMAN AND/OR OTHER PARTIES PROVIDE THIS PROGRAM "AS IS"
WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY
AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE PROGRAM PROVE
DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
CORRECTION.

 IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW WILL RICHARD M.
STALLMAN, THE FREE SOFTWARE FOUNDATION, INC., AND/OR ANY OTHER PARTY
WHO MAY MODIFY AND REDISTRIBUTE THIS PROGRAM AS PERMITTED BELOW, BE
LIABLE TO YOU FOR DAMAGES, INCLUDING ANY LOST PROFITS, LOST MONIES, OR
OTHER SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
USE OR INABILITY TO USE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR
DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY THIRD PARTIES OR
A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS) THIS
PROGRAM, EVEN IF YOU HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGES, OR FOR ANY CLAIM BY ANY OTHER PARTY.

		GENERAL PUBLIC LICENSE TO COPY

  1. You may copy and distribute verbatim copies of this source file
as you receive it, in any medium, provided that you conspicuously
and appropriately publish on each copy a valid copyright notice
"Copyright (C) 1988 Free Software Foundation, Inc.", and include
following the copyright notice a verbatim copy of the above disclaimer
of warranty and of this License.

  2. You may modify your copy or copies of this source file or
any portion of it, and copy and distribute such modifications under
the terms of Paragraph 1 above, provided that you also do the following:

    a) cause the modified files to carry prominent notices stating
    that you changed the files and the date of any change; and

    b) cause the whole of any work that you distribute or publish,
    that in whole or in part contains or is a derivative of this
    program or any part thereof, to be licensed at no charge to all
    third parties on terms identical to those contained in this
    License Agreement (except that you may choose to grant more
    extensive warranty protection to third parties, at your option).

    c) You may charge a distribution fee for the physical act of
    transferring a copy, and you may at your option offer warranty
    protection in exchange for a fee.

  3. You may copy and distribute this program or any portion of it in
compiled, executable or object code form under the terms of Paragraphs
1 and 2 above provided that you do the following:

    a) cause each such copy to be accompanied by the
    corresponding machine-readable source code, which must
    be distributed under the terms of Paragraphs 1 and 2 above; or,

    b) cause each such copy to be accompanied by a
    written offer, with no time limit, to give any third party
    free (except for a nominal shipping charge) a machine readable
    copy of the corresponding source code, to be distributed
    under the terms of Paragraphs 1 and 2 above; or,

    c) in the case of a recipient of this program in compiled, executable
    or object code form (without the corresponding source code) you
    shall cause copies you distribute to be accompanied by a copy
    of the written offer of source code which you received along
    with the copy you received.

  4. You may not copy, sublicense, distribute or transfer this program
except as expressly provided under this License Agreement.  Any attempt
otherwise to copy, sublicense, distribute or transfer this program is void and
your rights to use the program under this License agreement shall be
automatically terminated.  However, parties who have received computer
software programs from you with this License Agreement will not have
their licenses terminated so long as such parties remain in full compliance.

  5. If you wish to incorporate parts of this program into other free
programs whose distribution conditions are different, write to the Free
Software Foundation at 675 Mass Ave, Cambridge, MA 02139.  We have not yet
worked out a simple rule that can be stated here, but we will often permit
this.  We will be guided by the two goals of preserving the free status of
all derivatives of our free software and of promoting the sharing and reuse of
software.

 In other words, you are welcome to use, share and improve this program.
 You are forbidden to forbid anyone else to use, share and improve
 what you give them.   Help stamp out software-hoarding!  */

#include <stdio.h>
#include <varargs.h>
#include <fcntl.h>
#include <sys/file.h>
#include <string.h>
#define index(s, c) strchr (s, c)
#define bzero(p, n) memset (p, 0, n)
#include "ioutil.h"

#define forward extern
\f


/* IO primitives */

void
xread (input_file, buffer, length)
     int input_file;
     char *buffer;
     int length;
{
  if ((iou_read (input_file, buffer, length)) != length)
    iou_error ("read failed to complete");
  return;
}
\f


/* HP-UX data structure descriptions */

struct hp_magic
  {
    unsigned short system_id;
    unsigned short file_type;
  };

#define HP_SYSID_98x6		0x020A
#define HP_SYSID_9000S200	0x020C

#define HP_SYSID_OK(sysid)						\
  (((sysid) == HP_SYSID_9000S200)					\
   || ((sysid) == HP_SYSID_98x6))

#define HP_FILETYPE_RELOC	0x0106 /* relocatable only */
#define HP_FILETYPE_EXEC	0x0107 /* normal executable */
#define HP_FILETYPE_SHARE	0x0108 /* shared executable */
#define HP_FILETYPE_DEMAND	0x010B /* demand-load executable */

#define HP_FILETYPE_OK(filetype)					\
  (((filetype) == HP_FILETYPE_EXEC)					\
   || ((filetype) == HP_FILETYPE_SHARE)					\
   || ((filetype) == HP_FILETYPE_DEMAND)				\
   || ((filetype) == HP_FILETYPE_RELOC))

#define HP_MAGIC_OK(magic)						\
  ((HP_SYSID_OK ((magic) . system_id))					\
   && (HP_FILETYPE_OK ((magic) . file_type)))

struct hp_exec
  {
    struct hp_magic a_magic;
    short a_stamp;		/* version id */
    short a_unused;
    long a_sparehp;
    long a_text;		/* size of text segment */
    long a_data;		/* size of data segment */
    long a_bss;			/* size of bss segment */
    long a_trsize;		/* text relocation size */
    long a_drsize;		/* data relocation size */
    long a_pasint;		/* pascal interface size */
    long a_lesyms;		/* symbol table size */
    long a_dnttsize;		/* debug name table size */
    long a_entry;		/* entry point */
    long a_sltsize;		/* source line table size */
    long a_vtsize;		/* value table size */
    long a_spare3;
    long a_spare4;
  };

#define HP_EXEC_MAGIC(header) (((header) . a_magic) . file_type)

#define HP_PAGE_SIZE 0x1000

#define HP_PAGE_SEEK(descriptor, header, offset)			\
{									\
  if ((HP_EXEC_MAGIC (header)) == HP_FILETYPE_DEMAND)			\
    {									\
      int HP_PAGE_SEEK_remainder;					\
									\
      HP_PAGE_SEEK_remainder = ((offset) % HP_PAGE_SIZE);		\
      if (HP_PAGE_SEEK_remainder != 0)					\
	iou_lseek							\
	  ((descriptor), (HP_PAGE_SIZE - HP_PAGE_SEEK_remainder), 1);	\
    }									\
}

struct hp_nlist
  {
    long n_value;
    unsigned char n_type;
    unsigned char n_length;	/* length of ascii symbol name */
    short n_almod;		/* alignment mod */
    short n_unused;
  };

#define HP_SYMTYPE_UNDEFINED	0x00
#define HP_SYMTYPE_ABSOLUTE	0x01
#define HP_SYMTYPE_TEXT		0x02
#define HP_SYMTYPE_DATA		0x03
#define HP_SYMTYPE_BSS		0x04
#define HP_SYMTYPE_COMMON	0x05
#define HP_SYMTYPE_FILENAME	0x1F

#define HP_SYMTYPE_ALIGN	0x10
#define HP_SYMTYPE_EXTERNAL	0x20

#define HP_SYMTYPE_TYPE		0x0F

struct hp_relocation_info
  {
    long r_address;		/* position of relocation in segment */
    short r_symbolnum;		/* id of the symbol of external relocations */
    char r_segment;
    char r_length;
  };

#define HP_RSEGMENT_TEXT	0x00
#define HP_RSEGMENT_DATA	0x01
#define HP_RSEGMENT_BSS		0x02
#define HP_RSEGMENT_EXTERNAL	0x03
#define HP_RSEGMENT_NOOP	0x3F

#define HP_RLENGTH_BYTE		0x00
#define HP_RLENGTH_WORD		0x01
#define HP_RLENGTH_LONG		0x02
#define HP_RLENGTH_ALIGN	0x03

#define HP_ARMAG "!<arch>\n"
#define HP_SARMAG 8
#define HP_ARFMAG "`\n"

struct hp_ar_hdr
  {
    char ar_name [16];		/* file member name - `/' terminated */
    char ar_date [12];		/* file member date - decimal */
    char ar_uid [6];		/* file member user id - decimal */
    char ar_gid [6];		/* file member group id - decimal */
    char ar_mode [8];		/* file member mode - octal */
    char ar_size [10];		/* file member size - decimal */
    char ar_fmag [2];		/* ARFMAG - string to end header */
  };

struct hp_ar_symtab_hdr
  {
    unsigned short n_entries;
    long string_table_size;
  };

struct hp_ar_symtab_entry
  {
    long string_index;
    long file_index;
  };
\f


/* GNU data structure descriptions */

#ifdef hpux

/* The `exec' structure and overall layout must be close to HP's when
   we are running on an HP system, otherwise we will not be able to
   execute the resulting file. */

#define GNU_OMAGIC HP_FILETYPE_EXEC
#define GNU_NMAGIC HP_FILETYPE_SHARE
#define GNU_ZMAGIC HP_FILETYPE_SHARE

struct gnu_exec
  {
    struct hp_magic a_magic;
    unsigned long a_spare1;
    unsigned long a_spare2;
    unsigned long a_text;	/* size of text segment */
    unsigned long a_data;	/* size of data segment */
    unsigned long a_bss;	/* size of bss segment */
    unsigned long a_trsize;	/* text relocation size */
    unsigned long a_drsize;	/* data relocation size */
    unsigned long a_spare3;	/* HP = pascal interface size */
    unsigned long a_spare4;	/* HP = symbol table size */
    unsigned long a_spare5;	/* HP = debug name table size */
    unsigned long a_entry;	/* entry point */
    unsigned long a_spare6;	/* HP = source line table size */
    unsigned long a_spare7;	/* HP = value table size */
    unsigned long a_syms;	/* symbol table size */
    unsigned long a_spare8;
  };

#define GNU_EXEC_MAGIC(header) (((header) . a_magic) . file_type)

#define GNU_EXEC_SET_MAGIC(header, magic)				\
{									\
  (((header) . a_magic) . system_id) = HP_SYSID_9000S200;		\
  (((header) . a_magic) . file_type) = (magic);				\
}

#define GNU_PAGE_SEEK_HEADER HP_PAGE_SEEK
#define GNU_PAGE_SEEK_TEXT HP_PAGE_SEEK

#else /* not hpux */

#define	GNU_OMAGIC	0407	/* old impure format */
#define	GNU_NMAGIC	0410	/* read-only text */
#define	GNU_ZMAGIC	0413	/* demand load format */

struct gnu_exec
  {
    unsigned long a_magic;	/* magic number */
    unsigned long a_text;	/* size of text segment */
    unsigned long a_data;	/* size of initialized data */
    unsigned long a_bss;	/* size of uninitialized data */
    unsigned long a_syms;	/* size of symbol table */
    unsigned long a_entry;	/* entry point */
    unsigned long a_trsize;	/* size of text relocation */
    unsigned long a_drsize;	/* size of data relocation */
  };

#define GNU_EXEC_MAGIC(header) ((header) . a_magic)
#define GNU_EXEC_SET_MAGIC(header, magic) ((header) . a_magic) = (magic)

#define GNU_PAGE_SIZE 0x400

#define GNU_PAGE_SEEK_HEADER(descriptor, header, offset)		\
{									\
  if ((GNU_EXEC_MAGIC (header)) == GNU_ZMAGIC)				\
    {									\
      int GNU_PAGE_SEEK_remainder;					\
									\
      GNU_PAGE_SEEK_remainder = ((offset) % GNU_PAGE_SIZE);		\
      if (GNU_PAGE_SEEK_remainder != 0)					\
	iou_lseek							\
	  ((descriptor), (GNU_PAGE_SIZE - GNU_PAGE_SEEK_remainder), 1);	\
    }									\
}

#define GNU_PAGE_SEEK_TEXT(descriptor, header, offset)

#endif /* hpux */

struct gnu_nlist
  {
    union
      {
	char *n_name;		/* for use when in-core */
	long n_strx;		/* index into file string table */
      } n_un;
    unsigned char n_type;	/* type flag (N_TEXT,..)  */
    char n_other;		/* unused */
    short n_desc;		/* see <stab.h> */
    unsigned long n_value;	/* value of symbol (or sdb offset) */
  };

#define	GNU_SYMTYPE_UNDEFINED	0x0
#define	GNU_SYMTYPE_ABSOLUTE	0x2
#define	GNU_SYMTYPE_TEXT	0x4
#define	GNU_SYMTYPE_DATA	0x6
#define	GNU_SYMTYPE_BSS		0x8
#define	GNU_SYMTYPE_COMMON	0x12
#define	GNU_SYMTYPE_FILENAME	0x1F
#define	GNU_SYMTYPE_EXTERNAL	0x01

struct gnu_relocation_info
  {
    long r_address;		/* address which is relocated */
    unsigned int
      r_symbolnum : 24,		/* local symbol ordinal */
      r_pcrel : 1,		/* was relocated pc relative already */
      r_length : 2,		/* BYTE, WORD, or LONG */
      r_extern : 1,		/* does not include value of sym referenced */
      : 4;			/* nothing, yet */
  };

#define GNU_RLENGTH_BYTE	0x00
#define GNU_RLENGTH_WORD	0x01
#define GNU_RLENGTH_LONG	0x02

#define	GNU_ARMAG "!<arch>\n"
#define	GNU_SARMAG 8
#define	GNU_ARFMAG "`\n"

struct gnu_ar_hdr
  {
    char ar_name [16];
    char ar_date [12];
    char ar_uid [6];
    char ar_gid [6];
    char ar_mode [8];
    char ar_size [10];
    char ar_fmag [2];
  };

struct gnu_symdef
  {
    int symbol_name_string_index;
    int library_member_offset;
  };
\f


/* List abstraction */

struct pair
  {
    char *car;
    char *cdr;
  };

struct pair *
pair_cons (car, cdr)
     char *car;
     char *cdr;
{
  register struct pair *result;

  result = ((struct pair *) (iou_malloc (sizeof (struct pair))));
  (result -> car) = car;
  (result -> cdr) = cdr;
  return (result);
}

#define LIST_CDR(list) ((struct pair *) ((list) -> cdr))
#define LIST_SET_CDR(list, newcdr) (list -> cdr) = ((char *) newcdr)

struct pair *
list_reverse (list)
     register struct pair *list;
{
  register struct pair *previous;
  register struct pair *next;

  previous = NULL;
  while (list != NULL)
    {
      next = (LIST_CDR (list));
      LIST_SET_CDR (list, previous);
      previous = list;
      list = next;
    }
  return (previous);
}

struct pair *
read_list (input_file, n_bytes, field_name, read_item, length)
     int input_file;
     int n_bytes;
     char * field_name;
     char * (* read_item) ();
     register int * length;	/* return value */
{
  register struct pair *result;

  result = NULL;
  (* length) = 0;
  while (n_bytes > 0)
    {
      result = (pair_cons (((* read_item) (input_file, (& n_bytes))), result));
      (* length) += 1;
    }
  if (n_bytes != 0)
    iou_error ("%s field size incorrect", field_name);
  return (list_reverse (result));
}
\f


/* Symbol Table */

struct gnu_nlist *
read_symbol (input_file, n_bytes)
     int input_file;
     int *n_bytes;		/* return value */
{
  struct hp_nlist input_nlist;
  register struct gnu_nlist *output_nlist;
  register char *name;

  {
    register int name_length;

    xread (input_file, (& input_nlist), (sizeof (input_nlist)));
    name_length = (input_nlist . n_length);
    name = (iou_malloc (name_length + 1));
    xread (input_file, name, name_length);
    (name [name_length]) = '\0';
    (* n_bytes) -= ((sizeof (input_nlist)) + name_length);
  }

  output_nlist =
    ((struct gnu_nlist *) (iou_malloc (sizeof (struct gnu_nlist))));
  ((output_nlist -> n_un) . n_name) = name;
  (output_nlist -> n_other) = 0;
  (output_nlist -> n_desc) = 0;
  (output_nlist -> n_value) = (input_nlist . n_value);

  {
    register int name_type;

    name_type = (input_nlist . n_type);
    if ((name_type & HP_SYMTYPE_ALIGN) != 0)
      iou_error ("aligned symbol encountered: %s", name);
    if (name_type == HP_SYMTYPE_FILENAME)
      (output_nlist -> n_type) = GNU_SYMTYPE_FILENAME;
    else
      {
	switch (name_type & HP_SYMTYPE_TYPE)
	  {
	  case HP_SYMTYPE_UNDEFINED:
	    (output_nlist -> n_type) = GNU_SYMTYPE_UNDEFINED;
	    break;

	  case HP_SYMTYPE_ABSOLUTE:
	    (output_nlist -> n_type) = GNU_SYMTYPE_ABSOLUTE;
	    break;

	  case HP_SYMTYPE_TEXT:
	    (output_nlist -> n_type) = GNU_SYMTYPE_TEXT;
	    break;

	  case HP_SYMTYPE_DATA:
	    (output_nlist -> n_type) = GNU_SYMTYPE_DATA;
	    break;

	  case HP_SYMTYPE_BSS:
	    (output_nlist -> n_type) = GNU_SYMTYPE_BSS;
	    break;

	  case HP_SYMTYPE_COMMON:
	    (output_nlist -> n_type) = GNU_SYMTYPE_COMMON;
	    break;

	  default:
	    iou_error ("unknown symbol type encountered: %x", name_type);
	  }
	if ((name_type & HP_SYMTYPE_EXTERNAL) != 0)
	  (output_nlist -> n_type) |= GNU_SYMTYPE_EXTERNAL;
      }
  }

  return (output_nlist);
}

struct pair *
read_symbol_table (input_file, n_bytes, length)
     int input_file;
     int n_bytes;
     int * length;		/* return value */
{
  return
    (read_list (input_file, n_bytes, "symbol table", read_symbol, length));
}

void
write_symbol_table (output_file, symbol_table, length)
     int output_file;
     struct pair *symbol_table;
     int length;
{
  register struct pair *scan;
  register char *name;
  struct gnu_nlist output_nlist;
  int string_table_index;

  (output_nlist . n_other) = 0;
  (output_nlist . n_desc) = 0;

  string_table_index = (sizeof (string_table_index));
  for (scan = symbol_table; (scan != NULL); scan = (LIST_CDR (scan)))
    {
      register struct gnu_nlist *symbol;

      symbol = ((struct gnu_nlist *) (scan -> car));
      name = ((symbol -> n_un) . n_name);

      ((output_nlist . n_un) . n_strx) = string_table_index;
      (output_nlist . n_type) = (symbol -> n_type);
      (output_nlist . n_value) = (symbol -> n_value);
      iou_write (output_file, (& output_nlist), (sizeof (output_nlist)));

      string_table_index += ((strlen (name)) + 1);
      (scan -> car) = name;
      iou_free (symbol);
    }
  iou_write
    (output_file, (& string_table_index), (sizeof (string_table_index)));

  scan = symbol_table;
  while (scan != NULL)
    {
      register struct pair *cdr;

      name = (scan -> car);
      iou_write (output_file, name, ((strlen (name)) + 1));
      iou_free (name);
      cdr = (LIST_CDR (scan));
      iou_free (scan);
      scan = cdr;
    }
  return;
}
\f


/* Relocation Info */

struct gnu_relocation_info *
read_relocation_info_1 (input_file, n_bytes)
     int input_file;
     register int * n_bytes;	/* return value */
{
  struct hp_relocation_info input_info;
  register struct gnu_relocation_info *output_info;

  xread (input_file, (& input_info), (sizeof (input_info)));
  (* n_bytes) -= (sizeof (input_info));

  output_info =
    ((struct gnu_relocation_info *)
     (iou_malloc (sizeof (struct gnu_relocation_info))));
  (output_info -> r_pcrel) = 0;
  (output_info -> r_address) = (input_info . r_address);

  switch (input_info . r_segment)
    {
    case HP_RSEGMENT_TEXT:
      (output_info -> r_symbolnum) = GNU_SYMTYPE_TEXT;
      (output_info -> r_extern) = 0;
      break;

    case HP_RSEGMENT_DATA:
      (output_info -> r_symbolnum) = GNU_SYMTYPE_DATA;
      (output_info -> r_extern) = 0;
      break;

    case HP_RSEGMENT_BSS:
      (output_info -> r_symbolnum) = GNU_SYMTYPE_BSS;
      (output_info -> r_extern) = 0;
      break;

    case HP_RSEGMENT_EXTERNAL:
      (output_info -> r_symbolnum) = (input_info . r_symbolnum);
      (output_info -> r_extern) = 1;
      break;

    default:
      iou_error
	("illegal relocation segment type: %x", (input_info . r_segment));
    }

  switch (input_info . r_length)
    {
    case HP_RLENGTH_BYTE:
      (output_info -> r_length) = GNU_RLENGTH_BYTE;
      break;

    case HP_RLENGTH_WORD:
      (output_info -> r_length) = GNU_RLENGTH_WORD;
      break;

    case HP_RLENGTH_LONG:
      (output_info -> r_length) = GNU_RLENGTH_LONG;
      break;

    default:
      iou_error ("illegal relocation length: %x", (input_info . r_length));
    }

  return (output_info);
}

struct pair *
read_relocation_info (input_file, n_bytes, length)
     int input_file;
     int n_bytes;
     int * length;
{
  return
    (read_list
     (input_file, n_bytes, "relocation info", read_relocation_info_1, length));
}

void
write_relocation_info (output_file, relocation_info, length)
     int output_file;
     struct pair *relocation_info;
     int length;
{
  register struct pair *this;
  register struct gnu_relocation_info *car;
  register struct pair *cdr;

  this = relocation_info;
  while (this != NULL)
    {
      car = ((struct gnu_relocation_info *) (this -> car));
      iou_write (output_file, car, (sizeof (struct gnu_relocation_info)));
      iou_free (car);
      cdr = (LIST_CDR (this));
      iou_free (this);
      this = cdr;
    }
  return;
}
\f


/* Convert an executable (or relocatable) file. */

void
process_executable_file (input_file, output_file)
     int input_file;
     int output_file;
{
  struct hp_exec input_exec;
  struct gnu_exec output_exec;
  char *text_segment;
  char *data_segment;
  struct pair *symbol_table;
  int symbol_table_length;
  struct pair *text_relocation_info;
  int text_relocation_info_length;
  struct pair *data_relocation_info;
  int data_relocation_info_length;

  xread (input_file, (& input_exec), (sizeof (input_exec)));
  HP_PAGE_SEEK (input_file, input_exec, (sizeof (input_exec)));

  if ((input_exec . a_text) != 0)
    {
      text_segment = (iou_malloc (input_exec . a_text));
      xread (input_file, text_segment, (input_exec . a_text));
      HP_PAGE_SEEK (input_file, input_exec, (input_exec . a_text));
    }
  else
    text_segment = NULL;

  if ((input_exec . a_data) != 0)
    {
      data_segment = (iou_malloc (input_exec . a_data));
      xread (input_file, data_segment, (input_exec . a_data));
      HP_PAGE_SEEK (input_file, input_exec, (input_exec . a_data));
    }
  else
    data_segment = NULL;

  /* Skip the pascal interface text */
  iou_lseek (input_file, (input_exec . a_pasint), 1);

  symbol_table =
    (read_symbol_table
     (input_file, (input_exec . a_lesyms), (& symbol_table_length)));

  /* Skip the debugging tables */
  iou_lseek
    (input_file,
     ((input_exec . a_dnttsize)
      + (input_exec . a_sltsize)
      + (input_exec . a_vtsize)),
     1);

  text_relocation_info =
    (read_relocation_info
     (input_file, (input_exec . a_trsize), (& text_relocation_info_length)));
  data_relocation_info =
    (read_relocation_info
     (input_file, (input_exec . a_drsize), (& data_relocation_info_length)));

  bzero ((& output_exec), (sizeof (output_exec)));
  switch (HP_EXEC_MAGIC (input_exec))
    {
    case HP_FILETYPE_RELOC:
    case HP_FILETYPE_EXEC:
      GNU_EXEC_SET_MAGIC (output_exec, GNU_OMAGIC);
      break;

    case HP_FILETYPE_SHARE:
      GNU_EXEC_SET_MAGIC (output_exec, GNU_NMAGIC);
      break;

    case HP_FILETYPE_DEMAND:
      GNU_EXEC_SET_MAGIC (output_exec, GNU_ZMAGIC);
      break;

    default:
      iou_error ("unknown magic type: %x", (HP_EXEC_MAGIC (input_exec)));
    }
  (output_exec . a_text) = (input_exec . a_text);
  (output_exec . a_data) = (input_exec . a_data);
  (output_exec . a_bss) = (input_exec . a_bss);
  (output_exec . a_syms) = (symbol_table_length * (sizeof (struct gnu_nlist)));
  (output_exec . a_entry) = (input_exec . a_entry);
  (output_exec . a_trsize) = (input_exec . a_trsize);
  (output_exec . a_drsize) = (input_exec . a_drsize);

  iou_write (output_file, (& output_exec), (sizeof (output_exec)));
  GNU_PAGE_SEEK_HEADER (output_file, output_exec, (sizeof (output_exec)));
  if (text_segment != NULL)
    {
      iou_write (output_file, text_segment, (output_exec . a_text));
      iou_free (text_segment);
      GNU_PAGE_SEEK_TEXT (output_file, output_exec, (output_exec . a_text));
    }
  if (data_segment != NULL)
    {
      iou_write (output_file, data_segment, (output_exec . a_data));
      iou_free (data_segment);
      GNU_PAGE_SEEK_TEXT (output_file, output_exec, (output_exec . a_data));
    }
  write_relocation_info
    (output_file, text_relocation_info, text_relocation_info_length);
  write_relocation_info
    (output_file, data_relocation_info, data_relocation_info_length);
  write_symbol_table (output_file, symbol_table, symbol_table_length);

  return;
}
\f


/* Convert an archive file. */

/* These procedures take advantage of the fact that the HP and GNU
   formats for struct ar_hdr are virtually identical. */

long symtab_start_position;
char *symtab_member_data;
struct hp_ar_symtab_entry *hp_symtab_entries;
struct gnu_symdef *gnu_symtab_entries;
long symtab_entries_length;
long symtab_names_length;

void
process_archive_file (input_file, output_file)
     int input_file;
     int output_file;
{
  int start_position;
  int length;
  struct hp_ar_hdr input_header;
  int member_length;
  forward void process_archive_symtab ();
  forward void update_symtab_entries ();
  forward void output_symtab_entries ();
  forward void process_archive_entry ();

  gnu_symtab_entries = NULL;
  while (1)
    {
      start_position = (iou_lseek (input_file, 0, 1));
      length = (read (input_file, (& input_header), (sizeof (input_header))));
      if (length == 0)
	break;
      if (length != (sizeof (input_header)))
	iou_error ("input archive ends prematurely");
      if (((strncmp
	    ((input_header . ar_fmag),
	     HP_ARFMAG,
	     (sizeof (input_header . ar_fmag))))
	   != 0)
	  ||
	  ((sscanf ((input_header . ar_size), "%d", (& member_length)))
	   != 1))
	iou_error ("malformatted header of archive member");

      if (((input_header . ar_name) [0]) == '/')
	process_archive_symtab
	  (input_file, output_file, (& input_header), member_length);
      else
	{
	  if (gnu_symtab_entries != NULL)
	    update_symtab_entries
	      (start_position, (iou_lseek (output_file, 0, 1)));
	  process_archive_entry (input_file, output_file, (& input_header),
				 member_length);
	}
    }
  if (gnu_symtab_entries != NULL)
    output_symtab_entries (output_file, (& input_header));
  return;
}
\f


#ifdef DEBUG_SYMTAB

void
dump_symtab_data ()
{
  register struct hp_ar_symtab_entry *symtab_entries;
  register char *symtab_names;
  register int i;

  symtab_names = (symtab_member_data + (sizeof (struct hp_ar_symtab_hdr)));
  symtab_entries =
    ((struct hp_ar_symtab_entry *) (symtab_names + symtab_names_length));
  for (i = 0; (i < symtab_entries_length); i += 1)
    {
      fprintf
	(stdout,
	 "Entry %d: string_index = %d; file_index = %d; name = %s\n",
	 i,
	 ((symtab_entries [i]) . string_index),
	 ((symtab_entries [i]) . file_index),
	 (symtab_names + ((symtab_entries [i]) . string_index)));
    }
  fflush (stdout);
  return;
}

#endif /* DEBUG_SYMTAB */

void
process_archive_symtab (input_file, output_file, input_header, member_length)
     int input_file;
     int output_file;
     struct hp_ar_hdr *input_header;
     int member_length;
{
  long symtab_entries_bytes;
  void initialize_symtab_entries ();

  symtab_member_data = (iou_malloc (member_length));
  xread (input_file, symtab_member_data, member_length);

  symtab_entries_length =
    (((struct hp_ar_symtab_hdr *) symtab_member_data) -> n_entries);
  symtab_entries_bytes =
    (symtab_entries_length * (sizeof (struct hp_ar_symtab_entry)));
  symtab_names_length =
    (((struct hp_ar_symtab_hdr *) symtab_member_data) -> string_table_size);

#ifdef DEBUG_SYMTAB
  dump_symtab_data ();
#endif

  {
    char string_buffer [((sizeof (input_header -> ar_name)) + 1)];

    sprintf
      (string_buffer, "%-*s", (sizeof (input_header -> ar_name)), "__.SYMDEF");
    strncpy
      ((input_header -> ar_name),
       string_buffer,
       (sizeof (input_header -> ar_name)));
  }
  {
    char string_buffer [((sizeof (input_header -> ar_size)) + 1)];

    sprintf
      (string_buffer,
       "%-*d",
       (sizeof (input_header -> ar_size)),
       (symtab_entries_bytes + symtab_names_length + (2 * (sizeof (long)))));
    strncpy
      ((input_header -> ar_size),
       string_buffer,
       (sizeof (input_header -> ar_size)));
  }
  iou_write (output_file, input_header, (sizeof (* input_header)));
  iou_write (output_file, (& symtab_entries_bytes), (sizeof (long)));

  /* Leave slot for entries, which we fill in later. */
  symtab_start_position = (iou_lseek (output_file, 0, 1));
  initialize_symtab_entries ();
  iou_lseek (output_file, symtab_entries_bytes, 1);

  iou_write (output_file, (& symtab_names_length), (sizeof (long)));
  iou_write
    (output_file,
     (symtab_member_data + (sizeof (struct hp_ar_symtab_hdr))),
     symtab_names_length);

  return;
}

void
initialize_symtab_entries ()
{
  register struct hp_ar_symtab_entry *scan_hp;
  register struct hp_ar_symtab_entry *end;
  register struct gnu_symdef *scan_gnu;

  hp_symtab_entries =
    ((struct hp_ar_symtab_entry *)
     (symtab_member_data
      + (sizeof (struct hp_ar_symtab_hdr))
      + symtab_names_length));
  gnu_symtab_entries =
    ((struct gnu_symdef *)
     (iou_malloc (symtab_entries_length * (sizeof (struct gnu_symdef)))));

  scan_hp = hp_symtab_entries;
  end = (scan_hp + symtab_entries_length);
  scan_gnu = gnu_symtab_entries;
  while (scan_hp < end)
    {
      (scan_gnu -> symbol_name_string_index) = (scan_hp -> string_index);
      (scan_gnu -> library_member_offset) = (-1);
      scan_hp += 1;
      scan_gnu += 1;
    }

  return;
}

void
update_symtab_entries (old_offset, new_offset)
     register long old_offset;
     long new_offset;
{
  register struct hp_ar_symtab_entry *scan_hp;
  register struct hp_ar_symtab_entry *end;
  register struct gnu_symdef *scan_gnu;

#ifdef DEBUG_SYMTAB
  fprintf (stdout, "Update: old = %d, new = %d\n", old_offset, new_offset);
#endif

  scan_hp = hp_symtab_entries;
  end = (scan_hp + symtab_entries_length);
  scan_gnu = gnu_symtab_entries;
  while (scan_hp < end)
    {
      if ((scan_hp -> file_index) == old_offset)
	{
#ifdef DEBUG_SYMTAB
	  fprintf
	    (stdout,
	     "\t%s\n",
	     (symtab_member_data
	      + (sizeof (struct hp_ar_symtab_hdr))
	      + (scan -> string_index)));
#endif
	  (scan_gnu -> library_member_offset) = new_offset;
	}
      scan_hp += 1;
      scan_gnu += 1;
    }
  return;
}

void
check_symtab_entries ()
{
  register struct gnu_symdef *scan;
  register struct gnu_symdef *end;

  scan = gnu_symtab_entries;
  end = (scan + symtab_entries_length);
  while (scan < end)
    if (((scan++) -> library_member_offset) == (-1))
      iou_error ("Uninitialized __.SYMTAB entry");

  return;
}

void
output_symtab_entries (output_file, input_header)
     int output_file;
     struct hp_ar_hdr *input_header;
{
  check_symtab_entries ();
  iou_lseek (output_file, symtab_start_position, 0);
  iou_write
    (output_file,
     gnu_symtab_entries,
     (symtab_entries_length * (sizeof (struct gnu_symdef))));
  iou_free (symtab_member_data);
  iou_free (gnu_symtab_entries);
  return;
}
\f


void
process_archive_entry (input_file, output_file, input_header, member_length)
     int input_file;
     int output_file;
     struct hp_ar_hdr *input_header;
     int member_length;
{
  long header_position;
  long output_start;
  long output_end;
  long input_end;

  /* Strategy: leave a hole for the header, then process the file.
     Afterwards, back up and write the header in place. */
  header_position = (iou_lseek (output_file, 0, 1));
  output_start = (iou_lseek (output_file, (sizeof (* input_header)), 1));
  input_end = ((iou_lseek (input_file, 0, 1)) + member_length);

  process_executable_file (input_file, output_file);
  if ((iou_lseek (input_file, 0, 1)) != input_end)
    iou_error ("process_executable_file used wrong amount of input");

  output_end = (iou_lseek (output_file, 0, 1));
  iou_lseek (output_file, header_position, 0);
  (* (index ((input_header -> ar_name), '/'))) = ' ';
  {
    char string_buffer [((sizeof (input_header -> ar_size)) + 1)];

    sprintf
      (string_buffer,
       "%-*d",
       (sizeof (input_header -> ar_size)),
       (output_end - output_start));
    strncpy
      ((input_header -> ar_size),
       string_buffer,
       (sizeof (input_header -> ar_size)));
  }
  iou_write (output_file, input_header, (sizeof (* input_header)));
  iou_lseek (output_file, output_end, 0);

  /* Pad to even byte boundary if needed */
  if ((input_end & 1) != 0)
    iou_lseek (input_file, 1, 1);
  if ((output_end & 1) != 0)
    iou_write (output_file, "\0", 1);

  return;
}
\f


void
main (argc, argv)
     int argc;
     char *argv[];
{
  int input_file;
  int output_file;
  register int length;
  struct hp_magic input_magic;

  iou_set_program_name (argv);
  if (argc != 3)
    {
      fprintf (stderr, "usage: %s input-file output-file\n", iou_program_name);
      iou_error ();
    }

  input_file = (iou_open ((argv [1]), O_RDONLY));
  output_file = (iou_open ((argv [2]), (O_WRONLY | O_CREAT | O_TRUNC), 0666));

  xread (input_file, (& input_magic), (sizeof (input_magic)));
  if (HP_MAGIC_OK (input_magic))
    {
      iou_lseek (input_file, 0, 0);
      process_executable_file (input_file, output_file);
    }
  else
    {
      char armag [HP_SARMAG];

      iou_lseek (input_file, 0, 0);
      xread (input_file, armag, HP_SARMAG);
      if ((strncmp (armag, HP_ARMAG, HP_SARMAG)) != 0)
	iou_error ("input file not executable or archive");
      iou_write (output_file, GNU_ARMAG, GNU_SARMAG);
      process_archive_file (input_file, output_file);
    }
  exit (0);
  /*NOTREACHED*/
}
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