[deliverable/binutils-gdb.git] / bfd / sco5-core.c

/* BFD back end for SCO5 core files (U-area and raw sections)
   Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
   Free Software Foundation, Inc.
   Written by Jouke Numan <jnuman@hiscom.nl>

   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 3 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., 51 Franklin Street - Fifth Floor, Boston,
   MA 02110-1301, USA.  */

#include "sysdep.h"
#include "bfd.h"
#include "libbfd.h"
#include "libaout.h"		/* BFD a.out internal data structures */

#include <stdio.h>
#include <sys/types.h>
#include <sys/param.h>
#include <sys/dir.h>
#include <signal.h>

#include <sys/user.h>		/* After a.out.h  */
#ifdef SCO5_CORE
#include <sys/paccess.h>
#include <sys/region.h>
#endif

struct sco5_core_struct
{
  struct user u;
};

/* forward declarations */

static asection *make_bfd_asection
  PARAMS ((bfd *, const char *, flagword, bfd_size_type, bfd_vma, file_ptr));
static struct user *read_uarea PARAMS ((bfd *, int));
const bfd_target *sco5_core_file_p PARAMS ((bfd *abfd));
char *sco5_core_file_failing_command PARAMS ((bfd *abfd));
int sco5_core_file_failing_signal PARAMS ((bfd *abfd));
#define sco5_core_file_matches_executable_p generic_core_file_matches_executable_p
#define sco5_core_file_pid _bfd_nocore_core_file_pid
static void swap_abort PARAMS ((void));

static asection *
make_bfd_asection (abfd, name, flags, size, vma, filepos)
     bfd *abfd;
     const char *name;
     flagword flags;
     bfd_size_type size;
     bfd_vma vma;
     file_ptr filepos;
{
  asection *asect;

  asect = bfd_make_section_anyway_with_flags (abfd, name, flags);
  if (!asect)
    return NULL;
  asect->size = size;
  asect->vma = vma;
  asect->filepos = filepos;
  asect->alignment_power = 2;

  return asect;
}

static struct user *
read_uarea(abfd, filepos)
     bfd *abfd;
     int filepos;

{
  struct sco5_core_struct *rawptr;
  bfd_size_type amt = sizeof (struct sco5_core_struct);

  rawptr = (struct sco5_core_struct *) bfd_zmalloc (amt);
  if (rawptr == NULL)
    return NULL;

  abfd->tdata.sco5_core_data = rawptr;

  if (bfd_seek (abfd, (file_ptr) filepos, SEEK_SET) != 0
      || bfd_bread ((void *) &rawptr->u, (bfd_size_type) sizeof rawptr->u,
		   abfd) != sizeof rawptr->u)
    {
      bfd_set_error (bfd_error_wrong_format);
      return NULL;
    }

  /* Sanity check perhaps??? */
  if (rawptr->u.u_dsize > 0x1000000)    /* Remember, it's in pages...  */
    {
      bfd_set_error (bfd_error_wrong_format);
      return NULL;
    }
  if (rawptr->u.u_ssize > 0x1000000)
    {
      bfd_set_error (bfd_error_wrong_format);
      return NULL;
    }
  return &rawptr->u;
}

const bfd_target *
sco5_core_file_p (abfd)
     bfd *abfd;
{
  int coffset_siz, val, nsecs, cheadoffs;
  int coresize;
  struct user *u;
  struct coreoffsets coffsets;
  struct coresecthead chead;
  char *secname;
  flagword flags;

  /* Read coreoffsets region at end of core (see core(FP)).  */

  {
    struct stat statbuf;

    if (bfd_stat (abfd, &statbuf) < 0)
      return NULL;

    coresize = statbuf.st_size;
  }
  /* Last long in core is sizeof struct coreoffsets, read it */
  if ((bfd_seek (abfd, (file_ptr) (coresize - sizeof coffset_siz),
		 SEEK_SET) != 0)
      || bfd_bread ((void *) &coffset_siz, (bfd_size_type) sizeof coffset_siz,
		   abfd) != sizeof coffset_siz)
    {
      bfd_set_error (bfd_error_wrong_format);
      return NULL;
    }

  /* Use it to seek start of coreoffsets region, read it and determine
     validity */
  if ((bfd_seek (abfd, (file_ptr) (coresize - coffset_siz), SEEK_SET) != 0)
      || (bfd_bread ((void *) &coffsets, (bfd_size_type) sizeof coffsets, abfd)
	  != sizeof coffsets)
      || ((coffsets.u_info != 1) && (coffsets.u_info != C_VERSION)))
    {
      bfd_set_error (bfd_error_wrong_format);
      return NULL;
    }

  if (coffsets.u_info == 1)
    {
      /* Old version, no section heads, read info from user struct */

      u = read_uarea (abfd, coffsets.u_user);
      if (! u)
	goto fail;

      if (!make_bfd_asection (abfd, ".reg", SEC_HAS_CONTENTS,
			      (bfd_size_type) coffsets.u_usize,
			      0 - (bfd_vma) u->u_ar0,
			      (file_ptr) coffsets.u_user))
	goto fail;

      if (!make_bfd_asection (abfd, ".data",
			      SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS,
			      ((bfd_size_type) u->u_exdata.ux_dsize
			       + u->u_exdata.ux_bsize),
			      (bfd_vma) u->u_exdata.ux_datorg,
			      (file_ptr) coffsets.u_data))
	goto fail;

      if (!make_bfd_asection (abfd, ".stack",
			      SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS,
			      (bfd_size_type) u->u_ssize * NBPC,
			      (bfd_vma) u->u_sub,
			      (file_ptr) coffsets.u_stack))
	goto fail;

      return abfd->xvec;		/* Done for version 1 */
    }

  /* Immediately before coreoffsets region is a long with offset in core
     to first coresecthead (CORES_OFFSETS), the long before this is the
     number of section heads in the list. Read both longs and read the
     coresecthead and check its validity */

  if ((bfd_seek (abfd,
		 (file_ptr) (coresize - coffset_siz - 2 * sizeof coffset_siz),
		 SEEK_SET) != 0)
      || (bfd_bread ((void *) &nsecs, (bfd_size_type) sizeof nsecs, abfd)
	  != sizeof nsecs)
      || (bfd_bread ((void *) &cheadoffs, (bfd_size_type) sizeof cheadoffs,
		    abfd) != sizeof cheadoffs)
      || (bfd_seek (abfd, (file_ptr) cheadoffs, SEEK_SET) != 0)
      || (bfd_bread ((void *) &chead, (bfd_size_type) sizeof chead, abfd)
	  != sizeof chead)
      || (chead.cs_stype != CORES_OFFSETS)
      || (chead.cs_x.csx_magic != COREMAGIC_NUMBER))
    {
      bfd_set_error (bfd_error_wrong_format);
      goto fail;
    }

  /* OK, we believe you.  You're a core file (sure, sure).  */

  /* Now loop over all regions and map them */
  nsecs--;				/* We've seen CORES_OFFSETS already */
  for (; nsecs; nsecs--)
    {
      if ((bfd_seek (abfd, (file_ptr) chead.cs_hseek, SEEK_SET) != 0)
	  || (bfd_bread ((void *) &chead, (bfd_size_type) sizeof chead, abfd)
	      != sizeof chead))
	{
	  bfd_set_error (bfd_error_wrong_format);
	  goto fail;
	}

      switch (chead.cs_stype)
	{
	case CORES_MAGIC:			/* Core header, check magic */
	  if (chead.cs_x.csx_magic != COREMAGIC_NUMBER)
	    {
	      bfd_set_error (bfd_error_wrong_format);
	      goto fail;
	    }
	  secname = NULL;
	  nsecs++;				/* MAGIC not in section cnt!*/
	  break;
	case CORES_UAREA:			/* U-area, read in tdata */
	  u = read_uarea (abfd, chead.cs_sseek);
	  if (! u)
	    goto fail;

	  /* This is tricky.  As the "register section", we give them
	     the entire upage and stack.  u.u_ar0 points to where
	     "register 0" is stored.  There are two tricks with this,
	     though.  One is that the rest of the registers might be
	     at positive or negative (or both) displacements from
	     *u_ar0.  The other is that u_ar0 is sometimes an absolute
	     address in kernel memory, and on other systems it is an
	     offset from the beginning of the `struct user'.

	     As a practical matter, we don't know where the registers
	     actually are, so we have to pass the whole area to GDB.
	     We encode the value of u_ar0 by setting the .regs section
	     up so that its virtual memory address 0 is at the place
	     pointed to by u_ar0 (by setting the vma of the start of
	     the section to -u_ar0).  GDB uses this info to locate the
	     regs, using minor trickery to get around the
	     offset-or-absolute-addr problem.  */

	  chead.cs_vaddr = 0 - (bfd_vma) u->u_ar0;

	  secname = ".reg";
	  flags = SEC_HAS_CONTENTS;

	  break;
	case CORES_PREGION:			/* A program region, map it */
	  switch (chead.cs_x.csx_preg.csxp_rtyp)
	    {
	    case PT_DATA:
	      secname = ".data";	/* Data region.		 */
	      break;
	    case PT_STACK:
	      secname = ".stack";	/* Stack region.	 */
	      break;
	    case PT_SHMEM:
	      secname = ".shmem";	/* Shared memory	 */
	      break;
	    case PT_LIBDAT:
	      secname = ".libdat";	/* Shared library data	 */
	      break;
	    case PT_V86:
	      secname = ".virt86";	/* Virtual 8086 mode	 */
	      break;
	    case PT_SHFIL:
	      secname = ".mmfile";	/* Memory mapped file	 */
	      break;
	    case PT_XDATA0:
	      secname = ".Xdat0";	/* XENIX data region, virtual 0 */
	      break;
	    default:
	      secname = "";
	    }
	  flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
	  break;
	case CORES_PROC:			/* struct proc */
	case CORES_ITIMER:			/* interval timers */
	case CORES_SCOUTSNAME:			/* struct scoutsname */
	  secname = NULL;	/* Ignore these */
	  break;
	default:
	  (*_bfd_error_handler) ("Unhandled SCO core file section type %d\n",
				 chead.cs_stype);
	  continue;
	}

      if (secname
	  && !make_bfd_asection (abfd, secname, flags,
				 (bfd_size_type) chead.cs_vsize,
				 (bfd_vma) chead.cs_vaddr,
				 (file_ptr) chead.cs_sseek))
	goto fail;

    }

  return abfd->xvec;

 fail:
  if (abfd->tdata.any)
    {
      bfd_release (abfd, abfd->tdata.any);
      abfd->tdata.any = NULL;
    }
  bfd_section_list_clear (abfd);
  return NULL;
}

char *
sco5_core_file_failing_command (abfd)
     bfd *abfd;
{
  char *com = abfd->tdata.sco5_core_data->u.u_comm;
  if (*com)
    return com;
  else
    return NULL;
}

int
sco5_core_file_failing_signal (ignore_abfd)
     bfd *ignore_abfd;
{
  return ((ignore_abfd->tdata.sco5_core_data->u.u_sysabort != 0)
	  ? ignore_abfd->tdata.sco5_core_data->u.u_sysabort
	  : -1);
}

/* If somebody calls any byte-swapping routines, shoot them.  */
static void
swap_abort ()
{
  abort (); /* This way doesn't require any declaration for ANSI to fuck up */
}

#define	NO_GET ((bfd_vma (*) (const void *)) swap_abort)
#define	NO_PUT ((void (*) (bfd_vma, void *)) swap_abort)
#define	NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort)
#define	NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort)
#define	NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort)
#define	NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort)

const bfd_target sco5_core_vec =
  {
    "sco5-core",
    bfd_target_unknown_flavour,
    BFD_ENDIAN_LITTLE,	       /* target byte order */
    BFD_ENDIAN_LITTLE,	       /* target headers byte order */
    (HAS_RELOC | EXEC_P |	/* object flags */
     HAS_LINENO | HAS_DEBUG |
     HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
    (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
    0,							   /* symbol prefix */
    ' ',						   /* ar_pad_char */
    16,							   /* ar_max_namelen */
    NO_GET64, NO_GETS64, NO_PUT64,	/* 64 bit data */
    NO_GET, NO_GETS, NO_PUT,		/* 32 bit data */
    NO_GET, NO_GETS, NO_PUT,		/* 16 bit data */
    NO_GET64, NO_GETS64, NO_PUT64,	/* 64 bit hdrs */
    NO_GET, NO_GETS, NO_PUT,		/* 32 bit hdrs */
    NO_GET, NO_GETS, NO_PUT,		/* 16 bit hdrs */

    {				/* bfd_check_format */
      _bfd_dummy_target,		/* unknown format */
      _bfd_dummy_target,		/* object file */
      _bfd_dummy_target,		/* archive */
      sco5_core_file_p			/* a core file */
    },
    {				/* bfd_set_format */
      bfd_false, bfd_false,
      bfd_false, bfd_false
    },
    {				/* bfd_write_contents */
      bfd_false, bfd_false,
      bfd_false, bfd_false
    },

    BFD_JUMP_TABLE_GENERIC (_bfd_generic),
    BFD_JUMP_TABLE_COPY (_bfd_generic),
    BFD_JUMP_TABLE_CORE (sco5),
    BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
    BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
    BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
    BFD_JUMP_TABLE_WRITE (_bfd_generic),
    BFD_JUMP_TABLE_LINK (_bfd_nolink),
    BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),

    NULL,

    (PTR) 0			/* backend_data */
  };
Commit	Line	Data
252b5132	1	/* BFD back end for SCO5 core files (U-area and raw sections)
3db64b00	2	Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
edeb6e24	3	Free Software Foundation, Inc.
252b5132 RH	4	Written by Jouke Numan <jnuman@hiscom.nl>
252b5132 RH	5
cd123cb7 NC	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 3 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,
	21	MA 02110-1301, USA. */
252b5132	22
252b5132	23	#include "sysdep.h"
3db64b00	24	#include "bfd.h"
252b5132	25	#include "libbfd.h"
b34976b6	26	#include "libaout.h" /* BFD a.out internal data structures */
252b5132 RH	27
	28	#include <stdio.h>
	29	#include <sys/types.h>
	30	#include <sys/param.h>
	31	#include <sys/dir.h>
	32	#include <signal.h>
	33
b34976b6	34	#include <sys/user.h> /* After a.out.h */
9b818146	35	#ifdef SCO5_CORE
252b5132 RH	36	#include <sys/paccess.h>
252b5132 RH	37	#include <sys/region.h>
9b818146	38	#endif
252b5132 RH	39
	40	struct sco5_core_struct
	41	{
	42	struct user u;
	43	};
	44
	45	/* forward declarations */
	46
b34976b6 AM	47	static asection *make_bfd_asection
b34976b6 AM	48	PARAMS ((bfd , const char , flagword, bfd_size_type, bfd_vma, file_ptr));
252b5132 RH	49	static struct user read_uarea PARAMS ((bfd , int));
	50	const bfd_target sco5_core_file_p PARAMS ((bfd abfd));
	51	char sco5_core_file_failing_command PARAMS ((bfd abfd));
	52	int sco5_core_file_failing_signal PARAMS ((bfd *abfd));
69d246d9	53	#define sco5_core_file_matches_executable_p generic_core_file_matches_executable_p
261b8d08	54	#define sco5_core_file_pid _bfd_nocore_core_file_pid
252b5132 RH	55	static void swap_abort PARAMS ((void));
	56
	57	static asection *
eea6121a	58	make_bfd_asection (abfd, name, flags, size, vma, filepos)
252b5132 RH	59	bfd *abfd;
	60	const char *name;
	61	flagword flags;
eea6121a	62	bfd_size_type size;
252b5132 RH	63	bfd_vma vma;
	64	file_ptr filepos;
	65	{
	66	asection *asect;
	67
117ed4f8	68	asect = bfd_make_section_anyway_with_flags (abfd, name, flags);
252b5132 RH	69	if (!asect)
252b5132 RH	70	return NULL;
eea6121a	71	asect->size = size;
252b5132 RH	72	asect->vma = vma;
	73	asect->filepos = filepos;
	74	asect->alignment_power = 2;
	75
	76	return asect;
	77	}
	78
252b5132 RH	79	static struct user *
	80	read_uarea(abfd, filepos)
	81	bfd *abfd;
	82	int filepos;
	83
	84	{
	85	struct sco5_core_struct *rawptr;
dc810e39	86	bfd_size_type amt = sizeof (struct sco5_core_struct);
252b5132	87
dc810e39	88	rawptr = (struct sco5_core_struct *) bfd_zmalloc (amt);
252b5132 RH	89	if (rawptr == NULL)
	90	return NULL;
	91
	92	abfd->tdata.sco5_core_data = rawptr;
	93
dc810e39 AM	94	if (bfd_seek (abfd, (file_ptr) filepos, SEEK_SET) != 0
	95	\|\| bfd_bread ((void *) &rawptr->u, (bfd_size_type) sizeof rawptr->u,
	96	abfd) != sizeof rawptr->u)
252b5132 RH	97	{
	98	bfd_set_error (bfd_error_wrong_format);
	99	return NULL;
	100	}
	101
	102	/* Sanity check perhaps??? */
7b82c249	103	if (rawptr->u.u_dsize > 0x1000000) /* Remember, it's in pages... */
252b5132 RH	104	{
	105	bfd_set_error (bfd_error_wrong_format);
	106	return NULL;
	107	}
	108	if (rawptr->u.u_ssize > 0x1000000)
	109	{
	110	bfd_set_error (bfd_error_wrong_format);
	111	return NULL;
	112	}
	113	return &rawptr->u;
	114	}
	115
252b5132 RH	116	const bfd_target *
	117	sco5_core_file_p (abfd)
	118	bfd *abfd;
	119	{
	120	int coffset_siz, val, nsecs, cheadoffs;
	121	int coresize;
	122	struct user *u;
	123	struct coreoffsets coffsets;
	124	struct coresecthead chead;
	125	char *secname;
	126	flagword flags;
	127
33216455	128	/* Read coreoffsets region at end of core (see core(FP)). */
252b5132 RH	129
252b5132 RH	130	{
252b5132	131	struct stat statbuf;
33216455	132
b677b8c0	133	if (bfd_stat (abfd, &statbuf) < 0)
3dff57e8	134	return NULL;
b677b8c0	135
252b5132 RH	136	coresize = statbuf.st_size;
	137	}
	138	/* Last long in core is sizeof struct coreoffsets, read it */
dc810e39 AM	139	if ((bfd_seek (abfd, (file_ptr) (coresize - sizeof coffset_siz),
	140	SEEK_SET) != 0)
	141	\|\| bfd_bread ((void *) &coffset_siz, (bfd_size_type) sizeof coffset_siz,
	142	abfd) != sizeof coffset_siz)
252b5132	143	{
7b82c249	144	bfd_set_error (bfd_error_wrong_format);
252b5132 RH	145	return NULL;
	146	}
	147
	148	/* Use it to seek start of coreoffsets region, read it and determine
	149	validity */
dc810e39 AM	150	if ((bfd_seek (abfd, (file_ptr) (coresize - coffset_siz), SEEK_SET) != 0)
dc810e39 AM	151	\|\| (bfd_bread ((void *) &coffsets, (bfd_size_type) sizeof coffsets, abfd)
252b5132 RH	152	!= sizeof coffsets)
	153	\|\| ((coffsets.u_info != 1) && (coffsets.u_info != C_VERSION)))
	154	{
7b82c249	155	bfd_set_error (bfd_error_wrong_format);
252b5132 RH	156	return NULL;
	157	}
	158
7b82c249 KH	159	if (coffsets.u_info == 1)
7b82c249 KH	160	{
252b5132 RH	161	/* Old version, no section heads, read info from user struct */
252b5132 RH	162
9e7b37b3	163	u = read_uarea (abfd, coffsets.u_user);
252b5132	164	if (! u)
9e7b37b3	165	goto fail;
252b5132	166
7b82c249	167	if (!make_bfd_asection (abfd, ".reg", SEC_HAS_CONTENTS,
b34976b6 AM	168	(bfd_size_type) coffsets.u_usize,
	169	0 - (bfd_vma) u->u_ar0,
	170	(file_ptr) coffsets.u_user))
9e7b37b3	171	goto fail;
7b82c249 KH	172
7b82c249 KH	173	if (!make_bfd_asection (abfd, ".data",
252b5132	174	SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS,
b34976b6	175	((bfd_size_type) u->u_exdata.ux_dsize
252b5132	176	+ u->u_exdata.ux_bsize),
b34976b6 AM	177	(bfd_vma) u->u_exdata.ux_datorg,
b34976b6 AM	178	(file_ptr) coffsets.u_data))
9e7b37b3	179	goto fail;
7b82c249 KH	180
	181	if (!make_bfd_asection (abfd, ".stack",
	182	SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS,
b34976b6 AM	183	(bfd_size_type) u->u_ssize * NBPC,
	184	(bfd_vma) u->u_sub,
	185	(file_ptr) coffsets.u_stack))
9e7b37b3	186	goto fail;
252b5132 RH	187
252b5132 RH	188	return abfd->xvec; /* Done for version 1 */
7b82c249	189	}
252b5132 RH	190
	191	/* Immediately before coreoffsets region is a long with offset in core
	192	to first coresecthead (CORES_OFFSETS), the long before this is the
	193	number of section heads in the list. Read both longs and read the
	194	coresecthead and check its validity */
7b82c249 KH	195
7b82c249 KH	196	if ((bfd_seek (abfd,
dc810e39	197	(file_ptr) (coresize - coffset_siz - 2 * sizeof coffset_siz),
252b5132	198	SEEK_SET) != 0)
dc810e39 AM	199	\|\| (bfd_bread ((void *) &nsecs, (bfd_size_type) sizeof nsecs, abfd)
	200	!= sizeof nsecs)
	201	\|\| (bfd_bread ((void *) &cheadoffs, (bfd_size_type) sizeof cheadoffs,
	202	abfd) != sizeof cheadoffs)
	203	\|\| (bfd_seek (abfd, (file_ptr) cheadoffs, SEEK_SET) != 0)
	204	\|\| (bfd_bread ((void *) &chead, (bfd_size_type) sizeof chead, abfd)
	205	!= sizeof chead)
252b5132 RH	206	\|\| (chead.cs_stype != CORES_OFFSETS)
	207	\|\| (chead.cs_x.csx_magic != COREMAGIC_NUMBER))
	208	{
	209	bfd_set_error (bfd_error_wrong_format);
9e7b37b3	210	goto fail;
252b5132 RH	211	}
	212
	213	/* OK, we believe you. You're a core file (sure, sure). */
	214
	215	/* Now loop over all regions and map them */
	216	nsecs--; /* We've seen CORES_OFFSETS already */
7b82c249	217	for (; nsecs; nsecs--)
252b5132	218	{
dc810e39 AM	219	if ((bfd_seek (abfd, (file_ptr) chead.cs_hseek, SEEK_SET) != 0)
	220	\|\| (bfd_bread ((void *) &chead, (bfd_size_type) sizeof chead, abfd)
	221	!= sizeof chead))
b34976b6 AM	222	{
b34976b6 AM	223	bfd_set_error (bfd_error_wrong_format);
9e7b37b3	224	goto fail;
b34976b6	225	}
252b5132	226
7b82c249	227	switch (chead.cs_stype)
252b5132 RH	228	{
	229	case CORES_MAGIC: /* Core header, check magic */
	230	if (chead.cs_x.csx_magic != COREMAGIC_NUMBER)
	231	{
	232	bfd_set_error (bfd_error_wrong_format);
9e7b37b3	233	goto fail;
252b5132 RH	234	}
	235	secname = NULL;
	236	nsecs++; /* MAGIC not in section cnt!*/
	237	break;
	238	case CORES_UAREA: /* U-area, read in tdata */
9e7b37b3	239	u = read_uarea (abfd, chead.cs_sseek);
252b5132	240	if (! u)
9e7b37b3	241	goto fail;
252b5132	242
b34976b6	243	/* This is tricky. As the "register section", we give them
252b5132 RH	244	the entire upage and stack. u.u_ar0 points to where
	245	"register 0" is stored. There are two tricks with this,
	246	though. One is that the rest of the registers might be
	247	at positive or negative (or both) displacements from
	248	*u_ar0. The other is that u_ar0 is sometimes an absolute
	249	address in kernel memory, and on other systems it is an
	250	offset from the beginning of the `struct user'.
7b82c249	251
252b5132 RH	252	As a practical matter, we don't know where the registers
	253	actually are, so we have to pass the whole area to GDB.
	254	We encode the value of u_ar0 by setting the .regs section
	255	up so that its virtual memory address 0 is at the place
	256	pointed to by u_ar0 (by setting the vma of the start of
	257	the section to -u_ar0). GDB uses this info to locate the
	258	regs, using minor trickery to get around the
7b82c249	259	offset-or-absolute-addr problem. */
252b5132 RH	260
	261	chead.cs_vaddr = 0 - (bfd_vma) u->u_ar0;
	262
b34976b6 AM	263	secname = ".reg";
b34976b6 AM	264	flags = SEC_HAS_CONTENTS;
252b5132	265
b34976b6	266	break;
252b5132 RH	267	case CORES_PREGION: /* A program region, map it */
	268	switch (chead.cs_x.csx_preg.csxp_rtyp)
	269	{
	270	case PT_DATA:
b34976b6	271	secname = ".data"; /* Data region. */
252b5132 RH	272	break;
252b5132 RH	273	case PT_STACK:
b34976b6	274	secname = ".stack"; /* Stack region. */
252b5132 RH	275	break;
252b5132 RH	276	case PT_SHMEM:
b34976b6	277	secname = ".shmem"; /* Shared memory */
252b5132 RH	278	break;
252b5132 RH	279	case PT_LIBDAT:
b34976b6	280	secname = ".libdat"; /* Shared library data */
252b5132 RH	281	break;
252b5132 RH	282	case PT_V86:
b34976b6	283	secname = ".virt86"; /* Virtual 8086 mode */
252b5132 RH	284	break;
252b5132 RH	285	case PT_SHFIL:
b34976b6	286	secname = ".mmfile"; /* Memory mapped file */
252b5132 RH	287	break;
252b5132 RH	288	case PT_XDATA0:
b34976b6	289	secname = ".Xdat0"; /* XENIX data region, virtual 0 */
252b5132 RH	290	break;
	291	default:
	292	secname = "";
	293	}
	294	flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
	295	break;
	296	case CORES_PROC: /* struct proc */
	297	case CORES_ITIMER: /* interval timers */
	298	case CORES_SCOUTSNAME: /* struct scoutsname */
	299	secname = NULL; /* Ignore these */
	300	break;
b34976b6 AM	301	default:
	302	(*_bfd_error_handler) ("Unhandled SCO core file section type %d\n",
	303	chead.cs_stype);
	304	continue;
	305	}
252b5132 RH	306
	307	if (secname
	308	&& !make_bfd_asection (abfd, secname, flags,
	309	(bfd_size_type) chead.cs_vsize,
	310	(bfd_vma) chead.cs_vaddr,
	311	(file_ptr) chead.cs_sseek))
9e7b37b3	312	goto fail;
252b5132 RH	313
	314	}
	315
	316	return abfd->xvec;
	317
9e7b37b3 AM	318	fail:
	319	if (abfd->tdata.any)
	320	{
	321	bfd_release (abfd, abfd->tdata.any);
	322	abfd->tdata.any = NULL;
	323	}
	324	bfd_section_list_clear (abfd);
	325	return NULL;
252b5132 RH	326	}
	327
	328	char *
	329	sco5_core_file_failing_command (abfd)
	330	bfd *abfd;
	331	{
	332	char *com = abfd->tdata.sco5_core_data->u.u_comm;
	333	if (*com)
	334	return com;
	335	else
	336	return NULL;
	337	}
	338
252b5132 RH	339	int
	340	sco5_core_file_failing_signal (ignore_abfd)
	341	bfd *ignore_abfd;
	342	{
7b82c249 KH	343	return ((ignore_abfd->tdata.sco5_core_data->u.u_sysabort != 0)
7b82c249 KH	344	? ignore_abfd->tdata.sco5_core_data->u.u_sysabort
252b5132 RH	345	: -1);
	346	}
	347
252b5132 RH	348	/* If somebody calls any byte-swapping routines, shoot them. */
252b5132 RH	349	static void
7b82c249	350	swap_abort ()
252b5132	351	{
7b82c249	352	abort (); /* This way doesn't require any declaration for ANSI to fuck up */
252b5132	353	}
8ce8c090	354
edeb6e24 AM	355	#define NO_GET ((bfd_vma () (const void )) swap_abort)
	356	#define NO_PUT ((void () (bfd_vma, void )) swap_abort)
	357	#define NO_GETS ((bfd_signed_vma () (const void )) swap_abort)
8ce8c090 AM	358	#define NO_GET64 ((bfd_uint64_t () (const void )) swap_abort)
	359	#define NO_PUT64 ((void () (bfd_uint64_t, void )) swap_abort)
	360	#define NO_GETS64 ((bfd_int64_t () (const void )) swap_abort)
252b5132 RH	361
	362	const bfd_target sco5_core_vec =
	363	{
	364	"sco5-core",
	365	bfd_target_unknown_flavour,
b34976b6 AM	366	BFD_ENDIAN_LITTLE, /* target byte order */
	367	BFD_ENDIAN_LITTLE, /* target headers byte order */
	368	(HAS_RELOC \| EXEC_P \| /* object flags */
252b5132 RH	369	HAS_LINENO \| HAS_DEBUG \|
	370	HAS_SYMS \| HAS_LOCALS \| WP_TEXT \| D_PAGED),
	371	(SEC_HAS_CONTENTS \| SEC_ALLOC \| SEC_LOAD \| SEC_RELOC), /* section flags */
b34976b6 AM	372	0, /* symbol prefix */
	373	' ', /* ar_pad_char */
	374	16, /* ar_max_namelen */
8ce8c090	375	NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit data */
edeb6e24 AM	376	NO_GET, NO_GETS, NO_PUT, /* 32 bit data */
edeb6e24 AM	377	NO_GET, NO_GETS, NO_PUT, /* 16 bit data */
8ce8c090	378	NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit hdrs */
edeb6e24 AM	379	NO_GET, NO_GETS, NO_PUT, /* 32 bit hdrs */
edeb6e24 AM	380	NO_GET, NO_GETS, NO_PUT, /* 16 bit hdrs */
b34976b6 AM	381
b34976b6 AM	382	{ /* bfd_check_format */
8ce8c090 AM	383	_bfd_dummy_target, /* unknown format */
	384	_bfd_dummy_target, /* object file */
	385	_bfd_dummy_target, /* archive */
	386	sco5_core_file_p /* a core file */
252b5132	387	},
b34976b6	388	{ /* bfd_set_format */
8ce8c090 AM	389	bfd_false, bfd_false,
8ce8c090 AM	390	bfd_false, bfd_false
252b5132	391	},
b34976b6	392	{ /* bfd_write_contents */
8ce8c090 AM	393	bfd_false, bfd_false,
8ce8c090 AM	394	bfd_false, bfd_false
252b5132 RH	395	},
252b5132 RH	396
3f3c5c34 AM	397	BFD_JUMP_TABLE_GENERIC (_bfd_generic),
	398	BFD_JUMP_TABLE_COPY (_bfd_generic),
	399	BFD_JUMP_TABLE_CORE (sco5),
	400	BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
	401	BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
	402	BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
	403	BFD_JUMP_TABLE_WRITE (_bfd_generic),
	404	BFD_JUMP_TABLE_LINK (_bfd_nolink),
	405	BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
252b5132	406
c3c89269	407	NULL,
7b82c249	408
b34976b6	409	(PTR) 0 /* backend_data */
8ce8c090	410	};