[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 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 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.  */

#include "bfd.h"
#include "sysdep.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  */
#include <sys/paccess.h>
#include <sys/region.h>

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));
bfd_boolean sco5_core_file_matches_executable_p
  PARAMS ((bfd *core_bfd, bfd *exec_bfd));
static void swap_abort PARAMS ((void));

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

  asect = bfd_make_section_anyway (abfd, name);
  if (!asect)
    return NULL;
  asect->flags = flags;
  asect->_raw_size = _raw_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)) */

  {
    FILE *stream = bfd_cache_lookup (abfd);
    struct stat statbuf;
    if (stream == NULL)
      return NULL;
    if (fstat (fileno (stream), &statbuf) < 0)
      {
	bfd_set_error (bfd_error_system_call);
	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);
}

bfd_boolean
sco5_core_file_matches_executable_p  (core_bfd, exec_bfd)
     bfd *core_bfd ATTRIBUTE_UNUSED;
     bfd *exec_bfd ATTRIBUTE_UNUSED;
{
  return TRUE;		/* FIXME, We have no way of telling at this point */
}

/* 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 (*) PARAMS ((   const bfd_byte *))) swap_abort )
#define NO_PUT  ((void    (*) PARAMS ((bfd_vma, bfd_byte *))) swap_abort )
#define NO_SIGNED_GET \
  ((bfd_signed_vma (*) PARAMS ((const bfd_byte *))) 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_GET, NO_SIGNED_GET, NO_PUT,	/* 64 bit data */
    NO_GET, NO_SIGNED_GET, NO_PUT,	/* 32 bit data */
    NO_GET, NO_SIGNED_GET, NO_PUT,	/* 16 bit data */
    NO_GET, NO_SIGNED_GET, NO_PUT,	/* 64 bit hdrs */
    NO_GET, NO_SIGNED_GET, NO_PUT,	/* 32 bit hdrs */
    NO_GET, NO_SIGNED_GET, 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)
9e7b37b3	2	Copyright 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
252b5132 RH	3	Written by Jouke Numan <jnuman@hiscom.nl>
	4
	5	This file is part of BFD, the Binary File Descriptor library.
	6
	7	This program is free software; you can redistribute it and/or modify
	8	it under the terms of the GNU General Public License as published by
	9	the Free Software Foundation; either version 2 of the License, or
	10	(at your option) any later version.
	11
	12	This program is distributed in the hope that it will be useful,
	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	GNU General Public License for more details.
	16
	17	You should have received a copy of the GNU General Public License
	18	along with this program; if not, write to the Free Software
	19	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
	20
	21	#include "bfd.h"
	22	#include "sysdep.h"
	23	#include "libbfd.h"
b34976b6	24	#include "libaout.h" /* BFD a.out internal data structures */
252b5132 RH	25
	26	#include <stdio.h>
	27	#include <sys/types.h>
	28	#include <sys/param.h>
	29	#include <sys/dir.h>
	30	#include <signal.h>
	31
b34976b6	32	#include <sys/user.h> /* After a.out.h */
252b5132 RH	33	#include <sys/paccess.h>
	34	#include <sys/region.h>
	35
	36	struct sco5_core_struct
	37	{
	38	struct user u;
	39	};
	40
	41	/* forward declarations */
	42
b34976b6 AM	43	static asection *make_bfd_asection
b34976b6 AM	44	PARAMS ((bfd , const char , flagword, bfd_size_type, bfd_vma, file_ptr));
252b5132 RH	45	static struct user read_uarea PARAMS ((bfd , int));
	46	const bfd_target sco5_core_file_p PARAMS ((bfd abfd));
	47	char sco5_core_file_failing_command PARAMS ((bfd abfd));
	48	int sco5_core_file_failing_signal PARAMS ((bfd *abfd));
b34976b6 AM	49	bfd_boolean sco5_core_file_matches_executable_p
b34976b6 AM	50	PARAMS ((bfd core_bfd, bfd exec_bfd));
252b5132 RH	51	static void swap_abort PARAMS ((void));
	52
	53	static asection *
	54	make_bfd_asection (abfd, name, flags, _raw_size, vma, filepos)
	55	bfd *abfd;
	56	const char *name;
	57	flagword flags;
	58	bfd_size_type _raw_size;
	59	bfd_vma vma;
	60	file_ptr filepos;
	61	{
	62	asection *asect;
	63
	64	asect = bfd_make_section_anyway (abfd, name);
	65	if (!asect)
	66	return NULL;
	67	asect->flags = flags;
	68	asect->_raw_size = _raw_size;
	69	asect->vma = vma;
	70	asect->filepos = filepos;
	71	asect->alignment_power = 2;
	72
	73	return asect;
	74	}
	75
252b5132 RH	76	static struct user *
	77	read_uarea(abfd, filepos)
	78	bfd *abfd;
	79	int filepos;
	80
	81	{
	82	struct sco5_core_struct *rawptr;
dc810e39	83	bfd_size_type amt = sizeof (struct sco5_core_struct);
252b5132	84
dc810e39	85	rawptr = (struct sco5_core_struct *) bfd_zmalloc (amt);
252b5132 RH	86	if (rawptr == NULL)
	87	return NULL;
	88
	89	abfd->tdata.sco5_core_data = rawptr;
	90
dc810e39 AM	91	if (bfd_seek (abfd, (file_ptr) filepos, SEEK_SET) != 0
	92	\|\| bfd_bread ((void *) &rawptr->u, (bfd_size_type) sizeof rawptr->u,
	93	abfd) != sizeof rawptr->u)
252b5132 RH	94	{
	95	bfd_set_error (bfd_error_wrong_format);
	96	return NULL;
	97	}
	98
	99	/* Sanity check perhaps??? */
7b82c249	100	if (rawptr->u.u_dsize > 0x1000000) /* Remember, it's in pages... */
252b5132 RH	101	{
	102	bfd_set_error (bfd_error_wrong_format);
	103	return NULL;
	104	}
	105	if (rawptr->u.u_ssize > 0x1000000)
	106	{
	107	bfd_set_error (bfd_error_wrong_format);
	108	return NULL;
	109	}
	110	return &rawptr->u;
	111	}
	112
252b5132 RH	113	const bfd_target *
	114	sco5_core_file_p (abfd)
	115	bfd *abfd;
	116	{
	117	int coffset_siz, val, nsecs, cheadoffs;
	118	int coresize;
	119	struct user *u;
	120	struct coreoffsets coffsets;
	121	struct coresecthead chead;
	122	char *secname;
	123	flagword flags;
	124
	125	/* Read coreoffsets region at end of core (see core(FP)) */
	126
	127	{
	128	FILE *stream = bfd_cache_lookup (abfd);
	129	struct stat statbuf;
	130	if (stream == NULL)
	131	return NULL;
	132	if (fstat (fileno (stream), &statbuf) < 0)
	133	{
b34976b6 AM	134	bfd_set_error (bfd_error_system_call);
b34976b6 AM	135	return NULL;
252b5132 RH	136	}
	137	coresize = statbuf.st_size;
	138	}
	139	/* Last long in core is sizeof struct coreoffsets, read it */
dc810e39 AM	140	if ((bfd_seek (abfd, (file_ptr) (coresize - sizeof coffset_siz),
	141	SEEK_SET) != 0)
	142	\|\| bfd_bread ((void *) &coffset_siz, (bfd_size_type) sizeof coffset_siz,
	143	abfd) != sizeof coffset_siz)
252b5132	144	{
7b82c249	145	bfd_set_error (bfd_error_wrong_format);
252b5132 RH	146	return NULL;
	147	}
	148
	149	/* Use it to seek start of coreoffsets region, read it and determine
	150	validity */
dc810e39 AM	151	if ((bfd_seek (abfd, (file_ptr) (coresize - coffset_siz), SEEK_SET) != 0)
dc810e39 AM	152	\|\| (bfd_bread ((void *) &coffsets, (bfd_size_type) sizeof coffsets, abfd)
252b5132 RH	153	!= sizeof coffsets)
	154	\|\| ((coffsets.u_info != 1) && (coffsets.u_info != C_VERSION)))
	155	{
7b82c249	156	bfd_set_error (bfd_error_wrong_format);
252b5132 RH	157	return NULL;
	158	}
	159
7b82c249 KH	160	if (coffsets.u_info == 1)
7b82c249 KH	161	{
252b5132 RH	162	/* Old version, no section heads, read info from user struct */
252b5132 RH	163
9e7b37b3	164	u = read_uarea (abfd, coffsets.u_user);
252b5132	165	if (! u)
9e7b37b3	166	goto fail;
252b5132	167
7b82c249	168	if (!make_bfd_asection (abfd, ".reg", SEC_HAS_CONTENTS,
b34976b6 AM	169	(bfd_size_type) coffsets.u_usize,
	170	0 - (bfd_vma) u->u_ar0,
	171	(file_ptr) coffsets.u_user))
9e7b37b3	172	goto fail;
7b82c249 KH	173
7b82c249 KH	174	if (!make_bfd_asection (abfd, ".data",
252b5132	175	SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS,
b34976b6	176	((bfd_size_type) u->u_exdata.ux_dsize
252b5132	177	+ u->u_exdata.ux_bsize),
b34976b6 AM	178	(bfd_vma) u->u_exdata.ux_datorg,
b34976b6 AM	179	(file_ptr) coffsets.u_data))
9e7b37b3	180	goto fail;
7b82c249 KH	181
	182	if (!make_bfd_asection (abfd, ".stack",
	183	SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS,
b34976b6 AM	184	(bfd_size_type) u->u_ssize * NBPC,
	185	(bfd_vma) u->u_sub,
	186	(file_ptr) coffsets.u_stack))
9e7b37b3	187	goto fail;
252b5132 RH	188
252b5132 RH	189	return abfd->xvec; /* Done for version 1 */
7b82c249	190	}
252b5132 RH	191
	192	/* Immediately before coreoffsets region is a long with offset in core
	193	to first coresecthead (CORES_OFFSETS), the long before this is the
	194	number of section heads in the list. Read both longs and read the
	195	coresecthead and check its validity */
7b82c249 KH	196
7b82c249 KH	197	if ((bfd_seek (abfd,
dc810e39	198	(file_ptr) (coresize - coffset_siz - 2 * sizeof coffset_siz),
252b5132	199	SEEK_SET) != 0)
dc810e39 AM	200	\|\| (bfd_bread ((void *) &nsecs, (bfd_size_type) sizeof nsecs, abfd)
	201	!= sizeof nsecs)
	202	\|\| (bfd_bread ((void *) &cheadoffs, (bfd_size_type) sizeof cheadoffs,
	203	abfd) != sizeof cheadoffs)
	204	\|\| (bfd_seek (abfd, (file_ptr) cheadoffs, SEEK_SET) != 0)
	205	\|\| (bfd_bread ((void *) &chead, (bfd_size_type) sizeof chead, abfd)
	206	!= sizeof chead)
252b5132 RH	207	\|\| (chead.cs_stype != CORES_OFFSETS)
	208	\|\| (chead.cs_x.csx_magic != COREMAGIC_NUMBER))
	209	{
	210	bfd_set_error (bfd_error_wrong_format);
9e7b37b3	211	goto fail;
252b5132 RH	212	}
	213
	214	/* OK, we believe you. You're a core file (sure, sure). */
	215
	216	/* Now loop over all regions and map them */
	217	nsecs--; /* We've seen CORES_OFFSETS already */
7b82c249	218	for (; nsecs; nsecs--)
252b5132	219	{
dc810e39 AM	220	if ((bfd_seek (abfd, (file_ptr) chead.cs_hseek, SEEK_SET) != 0)
	221	\|\| (bfd_bread ((void *) &chead, (bfd_size_type) sizeof chead, abfd)
	222	!= sizeof chead))
b34976b6 AM	223	{
b34976b6 AM	224	bfd_set_error (bfd_error_wrong_format);
9e7b37b3	225	goto fail;
b34976b6	226	}
252b5132	227
7b82c249	228	switch (chead.cs_stype)
252b5132 RH	229	{
	230	case CORES_MAGIC: /* Core header, check magic */
	231	if (chead.cs_x.csx_magic != COREMAGIC_NUMBER)
	232	{
	233	bfd_set_error (bfd_error_wrong_format);
9e7b37b3	234	goto fail;
252b5132 RH	235	}
	236	secname = NULL;
	237	nsecs++; /* MAGIC not in section cnt!*/
	238	break;
	239	case CORES_UAREA: /* U-area, read in tdata */
9e7b37b3	240	u = read_uarea (abfd, chead.cs_sseek);
252b5132	241	if (! u)
9e7b37b3	242	goto fail;
252b5132	243
b34976b6	244	/* This is tricky. As the "register section", we give them
252b5132 RH	245	the entire upage and stack. u.u_ar0 points to where
	246	"register 0" is stored. There are two tricks with this,
	247	though. One is that the rest of the registers might be
	248	at positive or negative (or both) displacements from
	249	*u_ar0. The other is that u_ar0 is sometimes an absolute
	250	address in kernel memory, and on other systems it is an
	251	offset from the beginning of the `struct user'.
7b82c249	252
252b5132 RH	253	As a practical matter, we don't know where the registers
	254	actually are, so we have to pass the whole area to GDB.
	255	We encode the value of u_ar0 by setting the .regs section
	256	up so that its virtual memory address 0 is at the place
	257	pointed to by u_ar0 (by setting the vma of the start of
	258	the section to -u_ar0). GDB uses this info to locate the
	259	regs, using minor trickery to get around the
7b82c249	260	offset-or-absolute-addr problem. */
252b5132 RH	261
	262	chead.cs_vaddr = 0 - (bfd_vma) u->u_ar0;
	263
b34976b6 AM	264	secname = ".reg";
b34976b6 AM	265	flags = SEC_HAS_CONTENTS;
252b5132	266
b34976b6	267	break;
252b5132 RH	268	case CORES_PREGION: /* A program region, map it */
	269	switch (chead.cs_x.csx_preg.csxp_rtyp)
	270	{
	271	case PT_DATA:
b34976b6	272	secname = ".data"; /* Data region. */
252b5132 RH	273	break;
252b5132 RH	274	case PT_STACK:
b34976b6	275	secname = ".stack"; /* Stack region. */
252b5132 RH	276	break;
252b5132 RH	277	case PT_SHMEM:
b34976b6	278	secname = ".shmem"; /* Shared memory */
252b5132 RH	279	break;
252b5132 RH	280	case PT_LIBDAT:
b34976b6	281	secname = ".libdat"; /* Shared library data */
252b5132 RH	282	break;
252b5132 RH	283	case PT_V86:
b34976b6	284	secname = ".virt86"; /* Virtual 8086 mode */
252b5132 RH	285	break;
252b5132 RH	286	case PT_SHFIL:
b34976b6	287	secname = ".mmfile"; /* Memory mapped file */
252b5132 RH	288	break;
252b5132 RH	289	case PT_XDATA0:
b34976b6	290	secname = ".Xdat0"; /* XENIX data region, virtual 0 */
252b5132 RH	291	break;
	292	default:
	293	secname = "";
	294	}
	295	flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
	296	break;
	297	case CORES_PROC: /* struct proc */
	298	case CORES_ITIMER: /* interval timers */
	299	case CORES_SCOUTSNAME: /* struct scoutsname */
	300	secname = NULL; /* Ignore these */
	301	break;
b34976b6 AM	302	default:
	303	(*_bfd_error_handler) ("Unhandled SCO core file section type %d\n",
	304	chead.cs_stype);
	305	continue;
	306	}
252b5132 RH	307
	308	if (secname
	309	&& !make_bfd_asection (abfd, secname, flags,
	310	(bfd_size_type) chead.cs_vsize,
	311	(bfd_vma) chead.cs_vaddr,
	312	(file_ptr) chead.cs_sseek))
9e7b37b3	313	goto fail;
252b5132 RH	314
	315	}
	316
	317	return abfd->xvec;
	318
9e7b37b3 AM	319	fail:
	320	if (abfd->tdata.any)
	321	{
	322	bfd_release (abfd, abfd->tdata.any);
	323	abfd->tdata.any = NULL;
	324	}
	325	bfd_section_list_clear (abfd);
	326	return NULL;
252b5132 RH	327	}
	328
	329	char *
	330	sco5_core_file_failing_command (abfd)
	331	bfd *abfd;
	332	{
	333	char *com = abfd->tdata.sco5_core_data->u.u_comm;
	334	if (*com)
	335	return com;
	336	else
	337	return NULL;
	338	}
	339
252b5132 RH	340	int
	341	sco5_core_file_failing_signal (ignore_abfd)
	342	bfd *ignore_abfd;
	343	{
7b82c249 KH	344	return ((ignore_abfd->tdata.sco5_core_data->u.u_sysabort != 0)
7b82c249 KH	345	? ignore_abfd->tdata.sco5_core_data->u.u_sysabort
252b5132 RH	346	: -1);
	347	}
	348
b34976b6	349	bfd_boolean
252b5132	350	sco5_core_file_matches_executable_p (core_bfd, exec_bfd)
dc810e39 AM	351	bfd *core_bfd ATTRIBUTE_UNUSED;
dc810e39 AM	352	bfd *exec_bfd ATTRIBUTE_UNUSED;
252b5132	353	{
b34976b6	354	return TRUE; /* FIXME, We have no way of telling at this point */
252b5132 RH	355	}
252b5132 RH	356
252b5132 RH	357	/* If somebody calls any byte-swapping routines, shoot them. */
252b5132 RH	358	static void
7b82c249	359	swap_abort ()
252b5132	360	{
7b82c249	361	abort (); /* This way doesn't require any declaration for ANSI to fuck up */
252b5132 RH	362	}
	363	#define NO_GET ((bfd_vma () PARAMS (( const bfd_byte ))) swap_abort )
	364	#define NO_PUT ((void () PARAMS ((bfd_vma, bfd_byte ))) swap_abort )
	365	#define NO_SIGNED_GET \
	366	((bfd_signed_vma () PARAMS ((const bfd_byte ))) swap_abort )
	367
	368	const bfd_target sco5_core_vec =
	369	{
	370	"sco5-core",
	371	bfd_target_unknown_flavour,
b34976b6 AM	372	BFD_ENDIAN_LITTLE, /* target byte order */
	373	BFD_ENDIAN_LITTLE, /* target headers byte order */
	374	(HAS_RELOC \| EXEC_P \| /* object flags */
252b5132 RH	375	HAS_LINENO \| HAS_DEBUG \|
	376	HAS_SYMS \| HAS_LOCALS \| WP_TEXT \| D_PAGED),
	377	(SEC_HAS_CONTENTS \| SEC_ALLOC \| SEC_LOAD \| SEC_RELOC), /* section flags */
b34976b6 AM	378	0, /* symbol prefix */
	379	' ', /* ar_pad_char */
	380	16, /* ar_max_namelen */
	381	NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit data */
	382	NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit data */
	383	NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit data */
	384	NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit hdrs */
	385	NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit hdrs */
	386	NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit hdrs */
	387
	388	{ /* bfd_check_format */
	389	_bfd_dummy_target, /* unknown format */
	390	_bfd_dummy_target, /* object file */
	391	_bfd_dummy_target, /* archive */
	392	sco5_core_file_p /* a core file */
252b5132	393	},
b34976b6	394	{ /* bfd_set_format */
252b5132 RH	395	bfd_false, bfd_false,
	396	bfd_false, bfd_false
	397	},
b34976b6	398	{ /* bfd_write_contents */
252b5132 RH	399	bfd_false, bfd_false,
	400	bfd_false, bfd_false
	401	},
	402
3f3c5c34 AM	403	BFD_JUMP_TABLE_GENERIC (_bfd_generic),
	404	BFD_JUMP_TABLE_COPY (_bfd_generic),
	405	BFD_JUMP_TABLE_CORE (sco5),
	406	BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
	407	BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
	408	BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
	409	BFD_JUMP_TABLE_WRITE (_bfd_generic),
	410	BFD_JUMP_TABLE_LINK (_bfd_nolink),
	411	BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
252b5132	412
c3c89269	413	NULL,
7b82c249	414
b34976b6	415	(PTR) 0 /* backend_data */
252b5132	416	};