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

/* BFD back-end for OSF/1 core files.
   Copyright 1993, 1994, 1995, 1998, 1999, 2001, 2002
   Free Software Foundation, Inc.

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.  */

/* This file can only be compiled on systems which use OSF/1 style
   core files.  */

#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"

#include <sys/user.h>
#include <sys/core.h>

/* forward declarations */

static asection *make_bfd_asection
  PARAMS ((bfd *, const char *, flagword, bfd_size_type, bfd_vma, file_ptr));
static const bfd_target *osf_core_core_file_p PARAMS ((bfd *));
static char *osf_core_core_file_failing_command PARAMS ((bfd *));
static int osf_core_core_file_failing_signal PARAMS ((bfd *));
static boolean osf_core_core_file_matches_executable_p PARAMS ((bfd *, bfd *));
static void swap_abort PARAMS ((void));

/* These are stored in the bfd's tdata */

struct osf_core_struct
{
  int sig;
  char cmd[MAXCOMLEN + 1];
};

#define core_hdr(bfd) ((bfd)->tdata.osf_core_data)
#define core_signal(bfd) (core_hdr(bfd)->sig)
#define core_command(bfd) (core_hdr(bfd)->cmd)

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 = 8;

  return asect;
}

static const bfd_target *
osf_core_core_file_p (abfd)
     bfd *abfd;
{
  int val;
  int i;
  char *secname;
  struct core_filehdr core_header;
  bfd_size_type amt;

  amt = sizeof core_header;
  val = bfd_bread ((PTR) &core_header, amt, abfd);
  if (val != sizeof core_header)
    return NULL;

  if (strncmp (core_header.magic, "Core", 4) != 0)
    return NULL;

  core_hdr (abfd) = (struct osf_core_struct *)
    bfd_zalloc (abfd, (bfd_size_type) sizeof (struct osf_core_struct));
  if (!core_hdr (abfd))
    return NULL;

  strncpy (core_command (abfd), core_header.name, MAXCOMLEN + 1);
  core_signal (abfd) = core_header.signo;

  for (i = 0; i < core_header.nscns; i++)
    {
      struct core_scnhdr core_scnhdr;
      flagword flags;

      amt = sizeof core_scnhdr;
      val = bfd_bread ((PTR) &core_scnhdr, amt, abfd);
      if (val != sizeof core_scnhdr)
	break;

      /* Skip empty sections.  */
      if (core_scnhdr.size == 0 || core_scnhdr.scnptr == 0)
	continue;

      switch (core_scnhdr.scntype)
	{
	case SCNRGN:
	  secname = ".data";
	  flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
	  break;
	case SCNSTACK:
	  secname = ".stack";
	  flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
	  break;
	case SCNREGS:
	  secname = ".reg";
	  flags = SEC_HAS_CONTENTS;
	  break;
	default:
	  (*_bfd_error_handler) (_("Unhandled OSF/1 core file section type %d\n"),
				 core_scnhdr.scntype);
	  continue;
	}

      if (!make_bfd_asection (abfd, secname, flags,
			      (bfd_size_type) core_scnhdr.size,
			      (bfd_vma) core_scnhdr.vaddr,
			      (file_ptr) core_scnhdr.scnptr))
	goto fail;
    }

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

  return abfd->xvec;

 fail:
  bfd_release (abfd, core_hdr (abfd));
  core_hdr (abfd) = NULL;
  bfd_section_list_clear (abfd);
  return NULL;
}

static char *
osf_core_core_file_failing_command (abfd)
     bfd *abfd;
{
  return core_command (abfd);
}

/* ARGSUSED */
static int
osf_core_core_file_failing_signal (abfd)
     bfd *abfd;
{
  return core_signal (abfd);
}

/* ARGSUSED */
static boolean
osf_core_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 */
}
\f
/* 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 osf_core_vec =
  {
    "osf-core",
    bfd_target_unknown_flavour,
    BFD_ENDIAN_BIG,		/* target byte order */
    BFD_ENDIAN_BIG,		/* 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 */
     osf_core_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 (osf_core),
    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 OSF/1 core files.
9e7b37b3	2	Copyright 1993, 1994, 1995, 1998, 1999, 2001, 2002
dc810e39	3	Free Software Foundation, Inc.
252b5132 RH	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	/* This file can only be compiled on systems which use OSF/1 style
	22	core files. */
	23
	24	#include "bfd.h"
	25	#include "sysdep.h"
	26	#include "libbfd.h"
	27
	28	#include <sys/user.h>
	29	#include <sys/core.h>
	30
	31	/* forward declarations */
	32
3f3c5c34 AM	33	static asection *make_bfd_asection
	34	PARAMS ((bfd , const char , flagword, bfd_size_type, bfd_vma, file_ptr));
	35	static const bfd_target osf_core_core_file_p PARAMS ((bfd ));
	36	static char osf_core_core_file_failing_command PARAMS ((bfd ));
	37	static int osf_core_core_file_failing_signal PARAMS ((bfd *));
	38	static boolean osf_core_core_file_matches_executable_p PARAMS ((bfd , bfd ));
	39	static void swap_abort PARAMS ((void));
252b5132 RH	40
	41	/* These are stored in the bfd's tdata */
	42
dc810e39	43	struct osf_core_struct
252b5132 RH	44	{
	45	int sig;
	46	char cmd[MAXCOMLEN + 1];
	47	};
	48
	49	#define core_hdr(bfd) ((bfd)->tdata.osf_core_data)
	50	#define core_signal(bfd) (core_hdr(bfd)->sig)
	51	#define core_command(bfd) (core_hdr(bfd)->cmd)
	52
	53	static asection *
	54	make_bfd_asection (abfd, name, flags, _raw_size, vma, filepos)
	55	bfd *abfd;
dc810e39	56	const char *name;
252b5132 RH	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
	68	asect->flags = flags;
	69	asect->_raw_size = _raw_size;
	70	asect->vma = vma;
	71	asect->filepos = filepos;
	72	asect->alignment_power = 8;
	73
	74	return asect;
	75	}
	76
252b5132 RH	77	static const bfd_target *
	78	osf_core_core_file_p (abfd)
	79	bfd *abfd;
	80	{
	81	int val;
	82	int i;
	83	char *secname;
	84	struct core_filehdr core_header;
dc810e39	85	bfd_size_type amt;
252b5132	86
dc810e39 AM	87	amt = sizeof core_header;
dc810e39 AM	88	val = bfd_bread ((PTR) &core_header, amt, abfd);
252b5132 RH	89	if (val != sizeof core_header)
	90	return NULL;
	91
	92	if (strncmp (core_header.magic, "Core", 4) != 0)
	93	return NULL;
	94
	95	core_hdr (abfd) = (struct osf_core_struct *)
dc810e39	96	bfd_zalloc (abfd, (bfd_size_type) sizeof (struct osf_core_struct));
252b5132 RH	97	if (!core_hdr (abfd))
	98	return NULL;
	99
	100	strncpy (core_command (abfd), core_header.name, MAXCOMLEN + 1);
	101	core_signal (abfd) = core_header.signo;
	102
	103	for (i = 0; i < core_header.nscns; i++)
	104	{
	105	struct core_scnhdr core_scnhdr;
	106	flagword flags;
	107
dc810e39 AM	108	amt = sizeof core_scnhdr;
dc810e39 AM	109	val = bfd_bread ((PTR) &core_scnhdr, amt, abfd);
252b5132 RH	110	if (val != sizeof core_scnhdr)
	111	break;
	112
	113	/* Skip empty sections. */
	114	if (core_scnhdr.size == 0 \|\| core_scnhdr.scnptr == 0)
	115	continue;
	116
	117	switch (core_scnhdr.scntype)
	118	{
	119	case SCNRGN:
	120	secname = ".data";
	121	flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
	122	break;
	123	case SCNSTACK:
	124	secname = ".stack";
	125	flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
	126	break;
	127	case SCNREGS:
	128	secname = ".reg";
	129	flags = SEC_HAS_CONTENTS;
	130	break;
	131	default:
	132	(*_bfd_error_handler) (_("Unhandled OSF/1 core file section type %d\n"),
	133	core_scnhdr.scntype);
	134	continue;
	135	}
	136
	137	if (!make_bfd_asection (abfd, secname, flags,
	138	(bfd_size_type) core_scnhdr.size,
	139	(bfd_vma) core_scnhdr.vaddr,
	140	(file_ptr) core_scnhdr.scnptr))
9e7b37b3	141	goto fail;
252b5132 RH	142	}
	143
	144	/* OK, we believe you. You're a core file (sure, sure). */
	145
	146	return abfd->xvec;
9e7b37b3 AM	147
	148	fail:
	149	bfd_release (abfd, core_hdr (abfd));
	150	core_hdr (abfd) = NULL;
	151	bfd_section_list_clear (abfd);
	152	return NULL;
252b5132 RH	153	}
	154
	155	static char *
	156	osf_core_core_file_failing_command (abfd)
	157	bfd *abfd;
	158	{
	159	return core_command (abfd);
	160	}
	161
	162	/* ARGSUSED */
	163	static int
	164	osf_core_core_file_failing_signal (abfd)
	165	bfd *abfd;
	166	{
	167	return core_signal (abfd);
	168	}
	169
	170	/* ARGSUSED */
	171	static boolean
	172	osf_core_core_file_matches_executable_p (core_bfd, exec_bfd)
dc810e39 AM	173	bfd *core_bfd ATTRIBUTE_UNUSED;
dc810e39 AM	174	bfd *exec_bfd ATTRIBUTE_UNUSED;
252b5132 RH	175	{
	176	return true; /* FIXME, We have no way of telling at this point */
	177	}
	178	\f
252b5132 RH	179	/* If somebody calls any byte-swapping routines, shoot them. */
	180	static void
	181	swap_abort()
	182	{
	183	abort(); /* This way doesn't require any declaration for ANSI to fuck up */
	184	}
	185	#define NO_GET ((bfd_vma () PARAMS (( const bfd_byte ))) swap_abort )
	186	#define NO_PUT ((void () PARAMS ((bfd_vma, bfd_byte ))) swap_abort )
	187	#define NO_SIGNED_GET \
	188	((bfd_signed_vma () PARAMS ((const bfd_byte ))) swap_abort )
	189
	190	const bfd_target osf_core_vec =
	191	{
	192	"osf-core",
	193	bfd_target_unknown_flavour,
	194	BFD_ENDIAN_BIG, /* target byte order */
	195	BFD_ENDIAN_BIG, /* target headers byte order */
	196	(HAS_RELOC \| EXEC_P \| /* object flags */
	197	HAS_LINENO \| HAS_DEBUG \|
	198	HAS_SYMS \| HAS_LOCALS \| WP_TEXT \| D_PAGED),
	199	(SEC_HAS_CONTENTS \| SEC_ALLOC \| SEC_LOAD \| SEC_RELOC), /* section flags */
	200	0, /* symbol prefix */
	201	' ', /* ar_pad_char */
	202	16, /* ar_max_namelen */
	203	NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit data */
	204	NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit data */
	205	NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit data */
	206	NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit hdrs */
	207	NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit hdrs */
	208	NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit hdrs */
	209
	210	{ /* bfd_check_format */
	211	_bfd_dummy_target, /* unknown format */
	212	_bfd_dummy_target, /* object file */
	213	_bfd_dummy_target, /* archive */
	214	osf_core_core_file_p /* a core file */
	215	},
	216	{ /* bfd_set_format */
	217	bfd_false, bfd_false,
	218	bfd_false, bfd_false
	219	},
	220	{ /* bfd_write_contents */
	221	bfd_false, bfd_false,
	222	bfd_false, bfd_false
	223	},
dc810e39	224
3f3c5c34 AM	225	BFD_JUMP_TABLE_GENERIC (_bfd_generic),
	226	BFD_JUMP_TABLE_COPY (_bfd_generic),
	227	BFD_JUMP_TABLE_CORE (osf_core),
	228	BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
	229	BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
	230	BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
	231	BFD_JUMP_TABLE_WRITE (_bfd_generic),
	232	BFD_JUMP_TABLE_LINK (_bfd_nolink),
	233	BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
252b5132	234
c3c89269	235	NULL,
dc810e39	236
252b5132 RH	237	(PTR) 0 /* backend_data */
252b5132 RH	238	};