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

/* BFD back-end for Irix core files.
   Copyright 1993, 1994, 1996, 1999, 2001, 2002
   Free Software Foundation, Inc.
   Written by Stu Grossman, Cygnus Support.
   Converted to back-end form by Ian Lance Taylor, Cygnus Support

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 Irix style core
   files (namely, Irix 4 and Irix 5, so far).  */

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

#ifdef IRIX_CORE

#include <core.out.h>

struct sgi_core_struct
{
  int sig;
  char cmd[CORE_NAMESIZE];
};

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

static asection *make_bfd_asection
  PARAMS ((bfd *, const char *, flagword, bfd_size_type, bfd_vma, file_ptr));
static const bfd_target *irix_core_core_file_p PARAMS ((bfd *));
static char *irix_core_core_file_failing_command PARAMS ((bfd *));
static int irix_core_core_file_failing_signal PARAMS ((bfd *));
static boolean irix_core_core_file_matches_executable_p
  PARAMS ((bfd *, 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 = 4;

  return asect;
}

static const bfd_target *
irix_core_core_file_p (abfd)
     bfd *abfd;
{
  int val;
  int i;
  char *secname;
  struct coreout coreout;
  struct idesc *idg, *idf, *ids;
  bfd_size_type amt;

  val = bfd_bread ((PTR) &coreout, (bfd_size_type) sizeof coreout, abfd);
  if (val != sizeof coreout)
    {
      if (bfd_get_error () != bfd_error_system_call)
	bfd_set_error (bfd_error_wrong_format);
      return 0;
    }

#ifndef CORE_MAGICN32
#define CORE_MAGICN32 CORE_MAGIC
#endif
  if ((coreout.c_magic != CORE_MAGIC && coreout.c_magic != CORE_MAGICN32)
      || coreout.c_version != CORE_VERSION1)
    return 0;

  amt = sizeof (struct sgi_core_struct);
  core_hdr (abfd) = (struct sgi_core_struct *) bfd_zalloc (abfd, amt);
  if (!core_hdr (abfd))
    return NULL;

  strncpy (core_command (abfd), coreout.c_name, CORE_NAMESIZE);
  core_signal (abfd) = coreout.c_sigcause;

  if (bfd_seek (abfd, coreout.c_vmapoffset, SEEK_SET) != 0)
    goto fail;

  for (i = 0; i < coreout.c_nvmap; i++)
    {
      struct vmap vmap;

      val = bfd_bread ((PTR) &vmap, (bfd_size_type) sizeof vmap, abfd);
      if (val != sizeof vmap)
	break;

      switch (vmap.v_type)
	{
	case VDATA:
	  secname = ".data";
	  break;
	case VSTACK:
	  secname = ".stack";
	  break;
#ifdef VMAPFILE
	case VMAPFILE:
	  secname = ".mapfile";
	  break;
#endif
	default:
	  continue;
	}

      /* A file offset of zero means that the section is not contained
	 in the corefile.  */
      if (vmap.v_offset == 0)
	continue;

      if (!make_bfd_asection (abfd, secname,
			      SEC_ALLOC+SEC_LOAD+SEC_HAS_CONTENTS,
			      vmap.v_len,
			      vmap.v_vaddr,
			      vmap.v_offset))
	goto fail;
    }

  /* Make sure that the regs are contiguous within the core file. */

  idg = &coreout.c_idesc[I_GPREGS];
  idf = &coreout.c_idesc[I_FPREGS];
  ids = &coreout.c_idesc[I_SPECREGS];

  if (idg->i_offset + idg->i_len != idf->i_offset
      || idf->i_offset + idf->i_len != ids->i_offset)
    goto fail;			/* Can't deal with non-contig regs */

  if (bfd_seek (abfd, idg->i_offset, SEEK_SET) != 0)
    goto fail;

  if (!make_bfd_asection (abfd, ".reg",
			  SEC_HAS_CONTENTS,
			  idg->i_len + idf->i_len + ids->i_len,
			  0,
			  idg->i_offset))
    goto fail;

  /* OK, we believe you.  You're a core file (sure, sure).  */
  bfd_default_set_arch_mach (abfd, bfd_arch_mips, 0);

  return abfd->xvec;

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

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

static int
irix_core_core_file_failing_signal (abfd)
     bfd *abfd;
{
  return core_signal (abfd);
}

static boolean
irix_core_core_file_matches_executable_p (core_bfd, exec_bfd)
     bfd *core_bfd, *exec_bfd;
{
  return true;			/* XXX - FIXME */
}

/* 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 irix_core_vec =
  {
    "irix-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 */
     irix_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 (irix_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 */
};

#endif /* IRIX_CORE */
Commit	Line	Data
252b5132	1	/* BFD back-end for Irix core files.
9e7b37b3 AM	2	Copyright 1993, 1994, 1996, 1999, 2001, 2002
9e7b37b3 AM	3	Free Software Foundation, Inc.
252b5132 RH	4	Written by Stu Grossman, Cygnus Support.
	5	Converted to back-end form by Ian Lance Taylor, Cygnus Support
	6
	7	This file is part of BFD, the Binary File Descriptor library.
	8
	9	This program is free software; you can redistribute it and/or modify
	10	it under the terms of the GNU General Public License as published by
	11	the Free Software Foundation; either version 2 of the License, or
	12	(at your option) any later version.
	13
	14	This program is distributed in the hope that it will be useful,
	15	but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	GNU General Public License for more details.
	18
	19	You should have received a copy of the GNU General Public License
	20	along with this program; if not, write to the Free Software
	21	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
	22
	23	/* This file can only be compiled on systems which use Irix style core
	24	files (namely, Irix 4 and Irix 5, so far). */
	25
	26	#include "bfd.h"
	27	#include "sysdep.h"
	28	#include "libbfd.h"
	29
	30	#ifdef IRIX_CORE
	31
	32	#include <core.out.h>
	33
dc810e39	34	struct sgi_core_struct
252b5132 RH	35	{
	36	int sig;
	37	char cmd[CORE_NAMESIZE];
	38	};
	39
	40	#define core_hdr(bfd) ((bfd)->tdata.sgi_core_data)
	41	#define core_signal(bfd) (core_hdr(bfd)->sig)
	42	#define core_command(bfd) (core_hdr(bfd)->cmd)
	43
	44	static asection *make_bfd_asection
dc810e39	45	PARAMS ((bfd , const char , flagword, bfd_size_type, bfd_vma, file_ptr));
252b5132 RH	46	static const bfd_target irix_core_core_file_p PARAMS ((bfd ));
	47	static char irix_core_core_file_failing_command PARAMS ((bfd ));
	48	static int irix_core_core_file_failing_signal PARAMS ((bfd *));
dc810e39	49	static boolean irix_core_core_file_matches_executable_p
252b5132	50	PARAMS ((bfd , 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;
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 = 4;
	73
	74	return asect;
	75	}
	76
	77	static const bfd_target *
	78	irix_core_core_file_p (abfd)
	79	bfd *abfd;
	80	{
	81	int val;
	82	int i;
	83	char *secname;
	84	struct coreout coreout;
	85	struct idesc idg, idf, *ids;
dc810e39	86	bfd_size_type amt;
252b5132	87
dc810e39	88	val = bfd_bread ((PTR) &coreout, (bfd_size_type) sizeof coreout, abfd);
252b5132 RH	89	if (val != sizeof coreout)
	90	{
	91	if (bfd_get_error () != bfd_error_system_call)
	92	bfd_set_error (bfd_error_wrong_format);
	93	return 0;
	94	}
	95
	96	#ifndef CORE_MAGICN32
	97	#define CORE_MAGICN32 CORE_MAGIC
	98	#endif
	99	if ((coreout.c_magic != CORE_MAGIC && coreout.c_magic != CORE_MAGICN32)
	100	\|\| coreout.c_version != CORE_VERSION1)
	101	return 0;
	102
dc810e39 AM	103	amt = sizeof (struct sgi_core_struct);
dc810e39 AM	104	core_hdr (abfd) = (struct sgi_core_struct *) bfd_zalloc (abfd, amt);
252b5132 RH	105	if (!core_hdr (abfd))
	106	return NULL;
	107
	108	strncpy (core_command (abfd), coreout.c_name, CORE_NAMESIZE);
	109	core_signal (abfd) = coreout.c_sigcause;
	110
	111	if (bfd_seek (abfd, coreout.c_vmapoffset, SEEK_SET) != 0)
9e7b37b3	112	goto fail;
252b5132 RH	113
	114	for (i = 0; i < coreout.c_nvmap; i++)
	115	{
	116	struct vmap vmap;
	117
dc810e39	118	val = bfd_bread ((PTR) &vmap, (bfd_size_type) sizeof vmap, abfd);
252b5132 RH	119	if (val != sizeof vmap)
	120	break;
	121
	122	switch (vmap.v_type)
	123	{
	124	case VDATA:
	125	secname = ".data";
	126	break;
	127	case VSTACK:
	128	secname = ".stack";
	129	break;
	130	#ifdef VMAPFILE
	131	case VMAPFILE:
	132	secname = ".mapfile";
	133	break;
	134	#endif
	135	default:
	136	continue;
	137	}
	138
	139	/* A file offset of zero means that the section is not contained
	140	in the corefile. */
	141	if (vmap.v_offset == 0)
	142	continue;
	143
	144	if (!make_bfd_asection (abfd, secname,
	145	SEC_ALLOC+SEC_LOAD+SEC_HAS_CONTENTS,
	146	vmap.v_len,
	147	vmap.v_vaddr,
	148	vmap.v_offset))
9e7b37b3	149	goto fail;
252b5132 RH	150	}
	151
	152	/* Make sure that the regs are contiguous within the core file. */
	153
	154	idg = &coreout.c_idesc[I_GPREGS];
	155	idf = &coreout.c_idesc[I_FPREGS];
	156	ids = &coreout.c_idesc[I_SPECREGS];
	157
	158	if (idg->i_offset + idg->i_len != idf->i_offset
	159	\|\| idf->i_offset + idf->i_len != ids->i_offset)
9e7b37b3	160	goto fail; /* Can't deal with non-contig regs */
252b5132 RH	161
252b5132 RH	162	if (bfd_seek (abfd, idg->i_offset, SEEK_SET) != 0)
9e7b37b3	163	goto fail;
252b5132	164
9e7b37b3 AM	165	if (!make_bfd_asection (abfd, ".reg",
	166	SEC_HAS_CONTENTS,
	167	idg->i_len + idf->i_len + ids->i_len,
	168	0,
	169	idg->i_offset))
	170	goto fail;
dc810e39	171
252b5132	172	/* OK, we believe you. You're a core file (sure, sure). */
dc3febfa	173	bfd_default_set_arch_mach (abfd, bfd_arch_mips, 0);
252b5132 RH	174
252b5132 RH	175	return abfd->xvec;
9e7b37b3 AM	176
	177	fail:
	178	bfd_release (abfd, core_hdr (abfd));
	179	core_hdr (abfd) = NULL;
	180	bfd_section_list_clear (abfd);
	181	return NULL;
252b5132 RH	182	}
	183
	184	static char *
	185	irix_core_core_file_failing_command (abfd)
	186	bfd *abfd;
	187	{
	188	return core_command (abfd);
	189	}
	190
	191	static int
	192	irix_core_core_file_failing_signal (abfd)
	193	bfd *abfd;
	194	{
	195	return core_signal (abfd);
	196	}
	197
	198	static boolean
	199	irix_core_core_file_matches_executable_p (core_bfd, exec_bfd)
	200	bfd core_bfd, exec_bfd;
	201	{
	202	return true; /* XXX - FIXME */
	203	}
	204
252b5132 RH	205	/* If somebody calls any byte-swapping routines, shoot them. */
	206	static void
	207	swap_abort()
	208	{
	209	abort(); /* This way doesn't require any declaration for ANSI to fuck up */
	210	}
	211	#define NO_GET ((bfd_vma () PARAMS (( const bfd_byte ))) swap_abort )
	212	#define NO_PUT ((void () PARAMS ((bfd_vma, bfd_byte ))) swap_abort )
	213	#define NO_SIGNED_GET \
	214	((bfd_signed_vma () PARAMS ((const bfd_byte ))) swap_abort )
	215
	216	const bfd_target irix_core_vec =
	217	{
	218	"irix-core",
	219	bfd_target_unknown_flavour,
	220	BFD_ENDIAN_BIG, /* target byte order */
	221	BFD_ENDIAN_BIG, /* target headers byte order */
	222	(HAS_RELOC \| EXEC_P \| /* object flags */
	223	HAS_LINENO \| HAS_DEBUG \|
	224	HAS_SYMS \| HAS_LOCALS \| WP_TEXT \| D_PAGED),
	225	(SEC_HAS_CONTENTS \| SEC_ALLOC \| SEC_LOAD \| SEC_RELOC), /* section flags */
	226	0, /* symbol prefix */
	227	' ', /* ar_pad_char */
	228	16, /* ar_max_namelen */
	229	NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit data */
	230	NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit data */
	231	NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit data */
	232	NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit hdrs */
	233	NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit hdrs */
	234	NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit hdrs */
	235
	236	{ /* bfd_check_format */
	237	_bfd_dummy_target, /* unknown format */
	238	_bfd_dummy_target, /* object file */
	239	_bfd_dummy_target, /* archive */
	240	irix_core_core_file_p /* a core file */
	241	},
	242	{ /* bfd_set_format */
	243	bfd_false, bfd_false,
	244	bfd_false, bfd_false
	245	},
	246	{ /* bfd_write_contents */
	247	bfd_false, bfd_false,
	248	bfd_false, bfd_false
	249	},
dc810e39	250
3f3c5c34 AM	251	BFD_JUMP_TABLE_GENERIC (_bfd_generic),
	252	BFD_JUMP_TABLE_COPY (_bfd_generic),
	253	BFD_JUMP_TABLE_CORE (irix_core),
	254	BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
	255	BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
	256	BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
	257	BFD_JUMP_TABLE_WRITE (_bfd_generic),
	258	BFD_JUMP_TABLE_LINK (_bfd_nolink),
	259	BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
252b5132	260
c3c89269	261	NULL,
dc810e39	262
252b5132 RH	263	(PTR) 0 /* backend_data */
	264	};
	265
	266	#endif /* IRIX_CORE */