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

/* BFD back-end for OSF/1 core files.
   Copyright 1993 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */

/* This file can only be compiled on systems which use OSF/1 style
   core files.  In the config/XXXXXX.mh file for such a system add
      HDEFINES=-DOSF_CORE
      HDEPFILES=osf-core.o
   */

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

#include <stdio.h>
#include <string.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 asymbol *
osf_core_make_empty_symbol PARAMS ((bfd *));
static 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 (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 asymbol *
osf_core_make_empty_symbol (abfd)
     bfd *abfd;
{
  asymbol *new = (asymbol *) bfd_zalloc (abfd, sizeof (asymbol));
  if (new)
    new->the_bfd = abfd;
  return new;
}

static bfd_target *
osf_core_core_file_p (abfd)
     bfd *abfd;
{
  int val;
  int i;
  char *secname;
  struct core_filehdr core_header;
  int dseccnt = 0;

  val = bfd_read ((PTR)&core_header, 1, sizeof core_header, 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, 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;

      val = bfd_read ((PTR)&core_scnhdr, 1, sizeof core_scnhdr, 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:
	  /* OSF/1 has multiple data sections (data, bss and data/bss sections
	     for shared libraries), but bfd doesn't permit data sections with
	     the same name. Construct a unique section name.  */
	  secname = bfd_alloc (abfd, 40);
	  if (!secname)
	    {
	      bfd_set_error (bfd_error_no_memory);
	      return NULL;
	    }
	  sprintf (secname, ".data%d", dseccnt++);
	  break;
	case SCNSTACK:
	  secname = ".stack";
	  break;
	case SCNREGS:
	  secname = ".reg";
	  break;
	default:
	  fprintf (stderr, "Unhandled OSF/1 core file section type %d\n",
		   core_scnhdr.scntype);
	  continue;
	}

      if (!make_bfd_asection (abfd, secname,
			      SEC_ALLOC+SEC_LOAD+SEC_HAS_CONTENTS,
			      (bfd_size_type) core_scnhdr.size,
			      (bfd_vma) core_scnhdr.vaddr,
			      (file_ptr) core_scnhdr.scnptr))
	return NULL;
    }

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

  return abfd->xvec;
}

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, *exec_bfd;
{
  return true;		/* FIXME, We have no way of telling at this point */
}
\f
#define osf_core_get_symtab_upper_bound _bfd_nosymbols_get_symtab_upper_bound
#define osf_core_get_symtab _bfd_nosymbols_get_symtab
#define osf_core_print_symbol _bfd_nosymbols_print_symbol
#define osf_core_get_symbol_info _bfd_nosymbols_get_symbol_info
#define osf_core_bfd_is_local_label _bfd_nosymbols_bfd_is_local_label
#define osf_core_get_lineno _bfd_nosymbols_get_lineno
#define osf_core_find_nearest_line _bfd_nosymbols_find_nearest_line
#define osf_core_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol

/* 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 )

bfd_target osf_core_vec =
  {
    "osf-core",
    bfd_target_unknown_flavour,
    true,			/* target byte order */
    true,			/* 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 */
    3,							   /* minimum alignment power */
    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 (osf_core),
       BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
       BFD_JUMP_TABLE_WRITE (_bfd_generic),
       BFD_JUMP_TABLE_LINK (_bfd_nolink),

    (PTR) 0			/* backend_data */
};
Commit	Line	Data
4c3721d5 ILT	1	/* BFD back-end for OSF/1 core files.
	2	Copyright 1993 Free Software Foundation, Inc.
	3
	4	This file is part of BFD, the Binary File Descriptor library.
	5
	6	This program is free software; you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as published by
	8	the Free Software Foundation; either version 2 of the License, or
	9	(at your option) any later version.
	10
	11	This program is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
	17	along with this program; if not, write to the Free Software
	18	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
	19
	20	/* This file can only be compiled on systems which use OSF/1 style
	21	core files. In the config/XXXXXX.mh file for such a system add
	22	HDEFINES=-DOSF_CORE
	23	HDEPFILES=osf-core.o
	24	*/
	25
	26	#include "bfd.h"
	27	#include "sysdep.h"
	28	#include "libbfd.h"
	29
	30	#include <stdio.h>
	31	#include <string.h>
	32	#include <sys/user.h>
	33	#include <sys/core.h>
	34
	35	/* forward declarations */
	36
	37	static asection *
	38	make_bfd_asection PARAMS ((bfd , CONST char , flagword, bfd_size_type,
	39	bfd_vma, file_ptr));
	40	static asymbol *
	41	osf_core_make_empty_symbol PARAMS ((bfd *));
	42	static bfd_target *
	43	osf_core_core_file_p PARAMS ((bfd *));
	44	static char *
	45	osf_core_core_file_failing_command PARAMS ((bfd *));
	46	static int
	47	osf_core_core_file_failing_signal PARAMS ((bfd *));
	48	static boolean
	49	osf_core_core_file_matches_executable_p PARAMS ((bfd , bfd ));
	50	static void
	51	swap_abort PARAMS ((void));
	52
	53	/* These are stored in the bfd's tdata */
	54
	55	struct osf_core_struct
	56	{
	57	int sig;
	58	char cmd[MAXCOMLEN + 1];
	59	};
	60
	61	#define core_hdr(bfd) ((bfd)->tdata.osf_core_data)
	62	#define core_signal(bfd) (core_hdr(bfd)->sig)
	63	#define core_command(bfd) (core_hdr(bfd)->cmd)
	64
65	static asection *
66	make_bfd_asection (abfd, name, flags, _raw_size, vma, filepos)
67	bfd *abfd;
68	CONST char *name;
69	flagword flags;
70	bfd_size_type _raw_size;
71	bfd_vma vma;
72	file_ptr filepos;
73	{
74	asection *asect;
75
76	asect = bfd_make_section (abfd, name);
77	if (!asect)
78	return NULL;
79
80	asect->flags = flags;
81	asect->_raw_size = _raw_size;
82	asect->vma = vma;
83	asect->filepos = filepos;
84	asect->alignment_power = 8;
85
86	return asect;
87	}
88
89	static asymbol *
90	osf_core_make_empty_symbol (abfd)
91	bfd *abfd;
92	{
93	asymbol new = (asymbol ) bfd_zalloc (abfd, sizeof (asymbol));
9783e04a DM	94	if (new)
9783e04a DM	95	new->the_bfd = abfd;
4c3721d5 ILT	96	return new;
	97	}
	98
	99	static bfd_target *
	100	osf_core_core_file_p (abfd)
	101	bfd *abfd;
	102	{
	103	int val;
	104	int i;
	105	char *secname;
	106	struct core_filehdr core_header;
	107	int dseccnt = 0;
	108
	109	val = bfd_read ((PTR)&core_header, 1, sizeof core_header, abfd);
	110	if (val != sizeof core_header)
	111	return NULL;
	112
	113	if (strncmp (core_header.magic, "Core", 4) != 0)
	114	return NULL;
	115
	116	core_hdr (abfd) = (struct osf_core_struct *)
	117	bfd_zalloc (abfd, sizeof (struct osf_core_struct));
	118	if (!core_hdr (abfd))
	119	return NULL;
	120
	121	strncpy (core_command (abfd), core_header.name, MAXCOMLEN + 1);
	122	core_signal (abfd) = core_header.signo;
	123
	124	for (i = 0; i < core_header.nscns; i++)
	125	{
	126	struct core_scnhdr core_scnhdr;
	127
	128	val = bfd_read ((PTR)&core_scnhdr, 1, sizeof core_scnhdr, abfd);
	129	if (val != sizeof core_scnhdr)
	130	break;
	131
	132	/* Skip empty sections. */
	133	if (core_scnhdr.size == 0 \|\| core_scnhdr.scnptr == 0)
	134	continue;
	135
	136	switch (core_scnhdr.scntype)
	137	{
	138	case SCNRGN:
	139	/* OSF/1 has multiple data sections (data, bss and data/bss sections
	140	for shared libraries), but bfd doesn't permit data sections with
	141	the same name. Construct a unique section name. */
	142	secname = bfd_alloc (abfd, 40);
9783e04a DM	143	if (!secname)
9783e04a DM	144	{
326e32d7	145	bfd_set_error (bfd_error_no_memory);
9783e04a DM	146	return NULL;
9783e04a DM	147	}
4c3721d5 ILT	148	sprintf (secname, ".data%d", dseccnt++);
	149	break;
	150	case SCNSTACK:
	151	secname = ".stack";
	152	break;
	153	case SCNREGS:
	154	secname = ".reg";
	155	break;
	156	default:
	157	fprintf (stderr, "Unhandled OSF/1 core file section type %d\n",
	158	core_scnhdr.scntype);
	159	continue;
	160	}
	161
	162	if (!make_bfd_asection (abfd, secname,
	163	SEC_ALLOC+SEC_LOAD+SEC_HAS_CONTENTS,
	164	(bfd_size_type) core_scnhdr.size,
	165	(bfd_vma) core_scnhdr.vaddr,
	166	(file_ptr) core_scnhdr.scnptr))
	167	return NULL;
	168	}
	169
	170	/* OK, we believe you. You're a core file (sure, sure). */
	171
	172	return abfd->xvec;
	173	}
	174
	175	static char *
	176	osf_core_core_file_failing_command (abfd)
	177	bfd *abfd;
	178	{
	179	return core_command (abfd);
	180	}
	181
	182	/* ARGSUSED */
	183	static int
	184	osf_core_core_file_failing_signal (abfd)
	185	bfd *abfd;
	186	{
	187	return core_signal (abfd);
	188	}
	189
	190	/* ARGSUSED */
	191	static boolean
	192	osf_core_core_file_matches_executable_p (core_bfd, exec_bfd)
	193	bfd core_bfd, exec_bfd;
	194	{
	195	return true; /* FIXME, We have no way of telling at this point */
	196	}
	197	\f
6812b607 ILT	198	#define osf_core_get_symtab_upper_bound _bfd_nosymbols_get_symtab_upper_bound
	199	#define osf_core_get_symtab _bfd_nosymbols_get_symtab
	200	#define osf_core_print_symbol _bfd_nosymbols_print_symbol
	201	#define osf_core_get_symbol_info _bfd_nosymbols_get_symbol_info
	202	#define osf_core_bfd_is_local_label _bfd_nosymbols_bfd_is_local_label
	203	#define osf_core_get_lineno _bfd_nosymbols_get_lineno
	204	#define osf_core_find_nearest_line _bfd_nosymbols_find_nearest_line
	205	#define osf_core_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
4c3721d5 ILT	206
	207	/* If somebody calls any byte-swapping routines, shoot them. */
	208	static void
	209	swap_abort()
	210	{
	211	abort(); /* This way doesn't require any declaration for ANSI to fuck up */
	212	}
9783e04a	213	#define NO_GET ((bfd_vma () PARAMS (( const bfd_byte ))) swap_abort )
4c3721d5	214	#define NO_PUT ((void () PARAMS ((bfd_vma, bfd_byte ))) swap_abort )
9783e04a DM	215	#define NO_SIGNED_GET \
9783e04a DM	216	((bfd_signed_vma () PARAMS ((const bfd_byte ))) swap_abort )
4c3721d5 ILT	217
	218	bfd_target osf_core_vec =
	219	{
	220	"osf-core",
	221	bfd_target_unknown_flavour,
	222	true, /* target byte order */
	223	true, /* target headers byte order */
	224	(HAS_RELOC \| EXEC_P \| /* object flags */
	225	HAS_LINENO \| HAS_DEBUG \|
	226	HAS_SYMS \| HAS_LOCALS \| WP_TEXT \| D_PAGED),
	227	(SEC_HAS_CONTENTS \| SEC_ALLOC \| SEC_LOAD \| SEC_RELOC), /* section flags */
	228	0, /* symbol prefix */
	229	' ', /* ar_pad_char */
	230	16, /* ar_max_namelen */
	231	3, /* minimum alignment power */
	232	NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit data */
	233	NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit data */
	234	NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit data */
	235	NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit hdrs */
	236	NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit hdrs */
	237	NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit hdrs */
	238
	239	{ /* bfd_check_format */
	240	_bfd_dummy_target, /* unknown format */
	241	_bfd_dummy_target, /* object file */
	242	_bfd_dummy_target, /* archive */
	243	osf_core_core_file_p /* a core file */
	244	},
	245	{ /* bfd_set_format */
	246	bfd_false, bfd_false,
	247	bfd_false, bfd_false
	248	},
	249	{ /* bfd_write_contents */
	250	bfd_false, bfd_false,
	251	bfd_false, bfd_false
	252	},
	253
6812b607 ILT	254	BFD_JUMP_TABLE_GENERIC (_bfd_generic),
	255	BFD_JUMP_TABLE_COPY (_bfd_generic),
	256	BFD_JUMP_TABLE_CORE (osf_core),
	257	BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
	258	BFD_JUMP_TABLE_SYMBOLS (osf_core),
	259	BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
	260	BFD_JUMP_TABLE_WRITE (_bfd_generic),
	261	BFD_JUMP_TABLE_LINK (_bfd_nolink),
	262
4c3721d5 ILT	263	(PTR) 0 /* backend_data */
4c3721d5 ILT	264	};