[binutils.git] / bfd / cisco-core.c

/* BFD back-end for CISCO crash dumps.
   Copyright 1994, 1997, 1999, 2000, 2001, 2002, 2004, 2005, 2006, 2007, 2010
   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 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"
/* core_file_failing_signal returns a host signal (this probably should
   be fixed).  */
#include <signal.h>

/* for MSVC builds */
#ifndef SIGTRAP
# define SIGTRAP 5
#endif
#ifndef SIGEMT
# define SIGEMT 6
#endif
#ifndef SIGBUS
# define SIGBUS 10
#endif
\f
int crash_info_locs[] = {
  0x0250,	/* mips, ppc, x86, i960 */
  0x0400,	/* m68k, mips, x86, i960 */
  0x0FFC,	/* m68k, mips, ppc, x86, i960 */
  0x3000,	/* ppc */
  0x4FFC,	/* m68k */
  -1
};

#define CRASH_MAGIC	0xdead1234
#define MASK_ADDR(x)	((x) & 0x0fffffff)	/* Mask crash info address */

typedef enum {
    CRASH_REASON_NOTCRASHED = 0,
    CRASH_REASON_EXCEPTION = 1,
    CRASH_REASON_CORRUPT = 2,
} crashreason;

typedef struct {
  char magic[4];		/* Magic number */
  char version[4];		/* Version number */
  char reason[4];		/* Crash reason */
  char cpu_vector[4];		/* CPU vector for exceptions */
  char registers[4];		/* Pointer to saved registers */
  char rambase[4];		/* Base of RAM (not in V1 crash info) */
  char textbase[4];		/* Base of .text section (not in V3 crash info) */
  char database[4];		/* Base of .data section (not in V3 crash info) */
  char bssbase[4];		/* Base of .bss section (not in V3 crash info) */
} crashinfo_external;

struct cisco_core_struct
{
  int sig;
};

static const bfd_target *cisco_core_file_validate PARAMS ((bfd *, int));
static const bfd_target *cisco_core_file_p PARAMS ((bfd *));
char *cisco_core_file_failing_command PARAMS ((bfd *));
int cisco_core_file_failing_signal PARAMS ((bfd *));
#define cisco_core_file_matches_executable_p generic_core_file_matches_executable_p
#define cisco_core_file_pid _bfd_nocore_core_file_pid
\f
/* Examine the file for a crash info struct at the offset given by
   CRASH_INFO_LOC.  */

static const bfd_target *
cisco_core_file_validate (abfd, crash_info_loc)
     bfd *abfd;
     int crash_info_loc;
{
  char buf[4];
  unsigned int crashinfo_offset;
  crashinfo_external crashinfo;
  bfd_size_type nread;
  unsigned int magic;
  unsigned int version;
  unsigned int rambase;
  sec_ptr asect;
  struct stat statbuf;
  bfd_size_type amt;
  flagword flags;

  if (bfd_seek (abfd, (file_ptr) crash_info_loc, SEEK_SET) != 0)
    return NULL;

  nread = bfd_bread (buf, (bfd_size_type) 4, abfd);
  if (nread != 4)
    {
      if (bfd_get_error () != bfd_error_system_call)
	bfd_set_error (bfd_error_wrong_format);
      return NULL;
    }
  crashinfo_offset = MASK_ADDR (bfd_get_32 (abfd, buf));

  if (bfd_seek (abfd, (file_ptr) crashinfo_offset, SEEK_SET) != 0)
    {
      /* Most likely we failed because of a bogus (huge) offset */
      bfd_set_error (bfd_error_wrong_format);
      return NULL;
    }

  nread = bfd_bread (&crashinfo, (bfd_size_type) sizeof (crashinfo), abfd);
  if (nread != sizeof (crashinfo))
    {
      if (bfd_get_error () != bfd_error_system_call)
	bfd_set_error (bfd_error_wrong_format);
      return NULL;
    }

  if (bfd_stat (abfd, &statbuf) < 0)
    {
      bfd_set_error (bfd_error_system_call);
      return NULL;
    }

  magic = bfd_get_32 (abfd, crashinfo.magic);
  if (magic != CRASH_MAGIC)
    {
      bfd_set_error (bfd_error_wrong_format);
      return NULL;
    }

  version = bfd_get_32 (abfd, crashinfo.version);
  if (version == 0)
    {
      bfd_set_error (bfd_error_wrong_format);
      return NULL;
    }
  else if (version == 1)
    {
      /* V1 core dumps don't specify the dump base, assume 0 */
      rambase = 0;
    }
  else
    {
      rambase = bfd_get_32 (abfd, crashinfo.rambase);
    }

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

  amt = sizeof (struct cisco_core_struct);
  abfd->tdata.cisco_core_data = (struct cisco_core_struct *) bfd_zmalloc (amt);
  if (abfd->tdata.cisco_core_data == NULL)
    return NULL;

  switch ((crashreason) bfd_get_32 (abfd, crashinfo.reason))
    {
    case CRASH_REASON_NOTCRASHED:
      /* Crash file probably came from write core.  */
      abfd->tdata.cisco_core_data->sig = 0;
      break;
    case CRASH_REASON_CORRUPT:
      /* The crash context area was corrupt -- proceed with caution.
	 We have no way of passing this information back to the caller.  */
      abfd->tdata.cisco_core_data->sig = 0;
      break;
    case CRASH_REASON_EXCEPTION:
      /* Crash occured due to CPU exception.  */

      /* This is 68k-specific; for MIPS we'll need to interpret
	 cpu_vector differently based on the target configuration
	 (since CISCO core files don't seem to have the processor
	 encoded in them).  */

      switch (bfd_get_32 (abfd, crashinfo.cpu_vector))
	{
	   /* bus error           */
	case 2 : abfd->tdata.cisco_core_data->sig = SIGBUS; break;
	   /* address error       */
	case 3 : abfd->tdata.cisco_core_data->sig = SIGBUS; break;
	   /* illegal instruction */
	case 4 : abfd->tdata.cisco_core_data->sig = SIGILL;  break;
	   /* zero divide         */
	case 5 : abfd->tdata.cisco_core_data->sig = SIGFPE;  break;
	   /* chk instruction     */
	case 6 : abfd->tdata.cisco_core_data->sig = SIGFPE; break;
	   /* trapv instruction   */
	case 7 : abfd->tdata.cisco_core_data->sig = SIGFPE; break;
	   /* privilege violation */
	case 8 : abfd->tdata.cisco_core_data->sig = SIGSEGV; break;
	   /* trace trap          */
	case 9 : abfd->tdata.cisco_core_data->sig = SIGTRAP;  break;
	   /* line 1010 emulator  */
	case 10: abfd->tdata.cisco_core_data->sig = SIGILL;  break;
	   /* line 1111 emulator  */
	case 11: abfd->tdata.cisco_core_data->sig = SIGILL;  break;

	  /* Coprocessor protocol violation.  Using a standard MMU or FPU
	     this cannot be triggered by software.  Call it a SIGBUS.  */
	case 13: abfd->tdata.cisco_core_data->sig = SIGBUS;  break;

	  /* interrupt           */
	case 31: abfd->tdata.cisco_core_data->sig = SIGINT;  break;
	  /* breakpoint          */
	case 33: abfd->tdata.cisco_core_data->sig = SIGTRAP;  break;

	  /* floating point err  */
	case 48: abfd->tdata.cisco_core_data->sig = SIGFPE;  break;
	  /* floating point err  */
	case 49: abfd->tdata.cisco_core_data->sig = SIGFPE;  break;
	  /* zero divide         */
	case 50: abfd->tdata.cisco_core_data->sig = SIGFPE;  break;
	  /* underflow           */
	case 51: abfd->tdata.cisco_core_data->sig = SIGFPE;  break;
	  /* operand error       */
	case 52: abfd->tdata.cisco_core_data->sig = SIGFPE;  break;
	   /* overflow            */
	case 53: abfd->tdata.cisco_core_data->sig = SIGFPE;  break;
	  /* NAN                 */
	case 54: abfd->tdata.cisco_core_data->sig = SIGFPE;  break;
	default:
#ifndef SIGEMT
#define SIGEMT SIGTRAP
#endif
	  /* "software generated"*/
	  abfd->tdata.cisco_core_data->sig = SIGEMT;
	}
      break;
    default:
      /* Unknown crash reason.  */
      abfd->tdata.cisco_core_data->sig = 0;
      break;
    }

  /* Create a ".data" section that maps the entire file, which is
     essentially a dump of the target system's RAM.  */

  flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS;
  asect = bfd_make_section_anyway_with_flags (abfd, ".data", flags);
  if (asect == NULL)
    goto error_return;
  /* The size of memory is the size of the core file itself.  */
  asect->size = statbuf.st_size;
  asect->vma = rambase;
  asect->filepos = 0;

  /* Create a ".crash" section to allow access to the saved
     crash information.  */

  flags = SEC_HAS_CONTENTS;
  asect = bfd_make_section_anyway_with_flags (abfd, ".crash", flags);
  if (asect == NULL)
    goto error_return;
  asect->vma = 0;
  asect->filepos = crashinfo_offset;
  asect->size = sizeof (crashinfo);

  /* Create a ".reg" section to allow access to the saved
     registers.  */

  asect = bfd_make_section_anyway_with_flags (abfd, ".reg", flags);
  if (asect == NULL)
    goto error_return;
  asect->vma = 0;
  asect->filepos = bfd_get_32 (abfd, crashinfo.registers) - rambase;
  /* Since we don't know the exact size of the saved register info,
     choose a register section size that is either the remaining part
     of the file, or 1024, whichever is smaller.  */
  nread = statbuf.st_size - asect->filepos;
  asect->size = (nread < 1024) ? nread : 1024;

  return abfd->xvec;

  /* Get here if we have already started filling out the BFD
     and there is an error of some kind.  */

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

static const bfd_target *
cisco_core_file_p (abfd)
     bfd *abfd;
{
  int *crash_info_locp;
  const bfd_target *target = NULL;

  for (crash_info_locp = crash_info_locs;
       *crash_info_locp != -1  &&  target == NULL;
       crash_info_locp++)
    {
      target = cisco_core_file_validate (abfd, *crash_info_locp);
    }
  return (target);
}

char *
cisco_core_file_failing_command (abfd)
     bfd *abfd ATTRIBUTE_UNUSED;
{
  return NULL;
}

int
cisco_core_file_failing_signal (abfd)
     bfd *abfd ATTRIBUTE_UNUSED;
{
  return abfd->tdata.cisco_core_data->sig;
}
\f
extern const bfd_target cisco_core_little_vec;

const bfd_target cisco_core_big_vec =
  {
    "cisco-ios-core-big",
    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 */
    bfd_getb64, bfd_getb_signed_64, bfd_putb64,
    bfd_getb32, bfd_getb_signed_32, bfd_putb32,
    bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
    bfd_getb64, bfd_getb_signed_64, bfd_putb64,
    bfd_getb32, bfd_getb_signed_32, bfd_putb32,
    bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */

    {				/* bfd_check_format */
     _bfd_dummy_target,		/* unknown format */
     _bfd_dummy_target,		/* object file */
     _bfd_dummy_target,		/* archive */
     cisco_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 (cisco),
       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),

    & cisco_core_little_vec,

    (PTR) 0			/* backend_data */
};

const bfd_target cisco_core_little_vec =
  {
    "cisco-ios-core-little",
    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 */
    bfd_getl64, bfd_getl_signed_64, bfd_putl64,
    bfd_getl32, bfd_getl_signed_32, bfd_putl32,
    bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
    bfd_getl64, bfd_getl_signed_64, bfd_putl64,
    bfd_getl32, bfd_getl_signed_32, bfd_putl32,
    bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */

    {				/* bfd_check_format */
     _bfd_dummy_target,		/* unknown format */
     _bfd_dummy_target,		/* object file */
     _bfd_dummy_target,		/* archive */
     cisco_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 (cisco),
       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),

    &cisco_core_big_vec,

    (PTR) 0			/* backend_data */
};
Commit	Line	Data
252b5132	1	/* BFD back-end for CISCO crash dumps.
35e7447c	2	Copyright 1994, 1997, 1999, 2000, 2001, 2002, 2004, 2005, 2006, 2007, 2010
9e7b37b3	3	Free Software Foundation, Inc.
252b5132	4
cd123cb7	5	This file is part of BFD, the Binary File Descriptor library.
252b5132	6
cd123cb7 NC	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 3 of the License, or
	10	(at your option) any later version.
252b5132	11
cd123cb7 NC	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.
252b5132	16
cd123cb7 NC	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., 51 Franklin Street - Fifth Floor, Boston,
	20	MA 02110-1301, USA. */
252b5132	21
252b5132	22	#include "sysdep.h"
3db64b00	23	#include "bfd.h"
252b5132 RH	24	#include "libbfd.h"
	25	/* core_file_failing_signal returns a host signal (this probably should
	26	be fixed). */
	27	#include <signal.h>
	28
	29	/* for MSVC builds */
	30	#ifndef SIGTRAP
	31	# define SIGTRAP 5
	32	#endif
	33	#ifndef SIGEMT
	34	# define SIGEMT 6
	35	#endif
	36	#ifndef SIGBUS
	37	# define SIGBUS 10
	38	#endif
	39	\f
f4bda984 RH	40	int crash_info_locs[] = {
	41	0x0250, /* mips, ppc, x86, i960 */
	42	0x0400, /* m68k, mips, x86, i960 */
	43	0x0FFC, /* m68k, mips, ppc, x86, i960 */
	44	0x3000, /* ppc */
	45	0x4FFC, /* m68k */
	46	-1
	47	};
	48
	49	#define CRASH_MAGIC 0xdead1234
	50	#define MASK_ADDR(x) ((x) & 0x0fffffff) /* Mask crash info address */
252b5132 RH	51
	52	typedef enum {
	53	CRASH_REASON_NOTCRASHED = 0,
	54	CRASH_REASON_EXCEPTION = 1,
	55	CRASH_REASON_CORRUPT = 2,
f4bda984	56	} crashreason;
252b5132	57
f4bda984 RH	58	typedef struct {
f4bda984 RH	59	char magic[4]; /* Magic number */
252b5132 RH	60	char version[4]; /* Version number */
	61	char reason[4]; /* Crash reason */
	62	char cpu_vector[4]; /* CPU vector for exceptions */
	63	char registers[4]; /* Pointer to saved registers */
	64	char rambase[4]; /* Base of RAM (not in V1 crash info) */
f4bda984 RH	65	char textbase[4]; /* Base of .text section (not in V3 crash info) */
	66	char database[4]; /* Base of .data section (not in V3 crash info) */
	67	char bssbase[4]; /* Base of .bss section (not in V3 crash info) */
	68	} crashinfo_external;
dc810e39	69
252b5132 RH	70	struct cisco_core_struct
	71	{
	72	int sig;
	73	};
dc810e39 AM	74
	75	static const bfd_target cisco_core_file_validate PARAMS ((bfd , int));
	76	static const bfd_target cisco_core_file_p PARAMS ((bfd ));
	77	char cisco_core_file_failing_command PARAMS ((bfd ));
	78	int cisco_core_file_failing_signal PARAMS ((bfd *));
69d246d9	79	#define cisco_core_file_matches_executable_p generic_core_file_matches_executable_p
35e7447c	80	#define cisco_core_file_pid _bfd_nocore_core_file_pid
252b5132	81	\f
f4bda984	82	/* Examine the file for a crash info struct at the offset given by
e60b52c6	83	CRASH_INFO_LOC. */
f4bda984	84
252b5132	85	static const bfd_target *
f4bda984	86	cisco_core_file_validate (abfd, crash_info_loc)
252b5132	87	bfd *abfd;
f4bda984	88	int crash_info_loc;
252b5132 RH	89	{
	90	char buf[4];
	91	unsigned int crashinfo_offset;
f4bda984	92	crashinfo_external crashinfo;
74633dd0	93	bfd_size_type nread;
f4bda984 RH	94	unsigned int magic;
f4bda984 RH	95	unsigned int version;
252b5132 RH	96	unsigned int rambase;
	97	sec_ptr asect;
	98	struct stat statbuf;
dc810e39	99	bfd_size_type amt;
117ed4f8	100	flagword flags;
252b5132	101
dc810e39	102	if (bfd_seek (abfd, (file_ptr) crash_info_loc, SEEK_SET) != 0)
252b5132 RH	103	return NULL;
252b5132 RH	104
dc810e39	105	nread = bfd_bread (buf, (bfd_size_type) 4, abfd);
252b5132 RH	106	if (nread != 4)
	107	{
	108	if (bfd_get_error () != bfd_error_system_call)
	109	bfd_set_error (bfd_error_wrong_format);
	110	return NULL;
	111	}
f4bda984	112	crashinfo_offset = MASK_ADDR (bfd_get_32 (abfd, buf));
252b5132	113
dc810e39	114	if (bfd_seek (abfd, (file_ptr) crashinfo_offset, SEEK_SET) != 0)
f4bda984 RH	115	{
	116	/* Most likely we failed because of a bogus (huge) offset */
	117	bfd_set_error (bfd_error_wrong_format);
	118	return NULL;
	119	}
252b5132	120
dc810e39	121	nread = bfd_bread (&crashinfo, (bfd_size_type) sizeof (crashinfo), abfd);
252b5132 RH	122	if (nread != sizeof (crashinfo))
	123	{
	124	if (bfd_get_error () != bfd_error_system_call)
	125	bfd_set_error (bfd_error_wrong_format);
	126	return NULL;
	127	}
	128
	129	if (bfd_stat (abfd, &statbuf) < 0)
	130	{
	131	bfd_set_error (bfd_error_system_call);
	132	return NULL;
	133	}
	134
f4bda984 RH	135	magic = bfd_get_32 (abfd, crashinfo.magic);
f4bda984 RH	136	if (magic != CRASH_MAGIC)
252b5132 RH	137	{
	138	bfd_set_error (bfd_error_wrong_format);
	139	return NULL;
	140	}
	141
f4bda984 RH	142	version = bfd_get_32 (abfd, crashinfo.version);
f4bda984 RH	143	if (version == 0)
252b5132	144	{
252b5132 RH	145	bfd_set_error (bfd_error_wrong_format);
252b5132 RH	146	return NULL;
f4bda984 RH	147	}
	148	else if (version == 1)
	149	{
	150	/* V1 core dumps don't specify the dump base, assume 0 */
252b5132	151	rambase = 0;
f4bda984 RH	152	}
	153	else
	154	{
252b5132	155	rambase = bfd_get_32 (abfd, crashinfo.rambase);
252b5132 RH	156	}
	157
	158	/* OK, we believe you. You're a core file. */
	159
dc810e39 AM	160	amt = sizeof (struct cisco_core_struct);
dc810e39 AM	161	abfd->tdata.cisco_core_data = (struct cisco_core_struct *) bfd_zmalloc (amt);
252b5132 RH	162	if (abfd->tdata.cisco_core_data == NULL)
	163	return NULL;
	164
	165	switch ((crashreason) bfd_get_32 (abfd, crashinfo.reason))
	166	{
	167	case CRASH_REASON_NOTCRASHED:
	168	/* Crash file probably came from write core. */
	169	abfd->tdata.cisco_core_data->sig = 0;
	170	break;
	171	case CRASH_REASON_CORRUPT:
	172	/* The crash context area was corrupt -- proceed with caution.
	173	We have no way of passing this information back to the caller. */
	174	abfd->tdata.cisco_core_data->sig = 0;
	175	break;
	176	case CRASH_REASON_EXCEPTION:
	177	/* Crash occured due to CPU exception. */
	178
	179	/* This is 68k-specific; for MIPS we'll need to interpret
	180	cpu_vector differently based on the target configuration
	181	(since CISCO core files don't seem to have the processor
	182	encoded in them). */
	183
	184	switch (bfd_get_32 (abfd, crashinfo.cpu_vector))
	185	{
	186	/* bus error */
	187	case 2 : abfd->tdata.cisco_core_data->sig = SIGBUS; break;
	188	/* address error */
	189	case 3 : abfd->tdata.cisco_core_data->sig = SIGBUS; break;
	190	/* illegal instruction */
	191	case 4 : abfd->tdata.cisco_core_data->sig = SIGILL; break;
	192	/* zero divide */
	193	case 5 : abfd->tdata.cisco_core_data->sig = SIGFPE; break;
	194	/* chk instruction */
	195	case 6 : abfd->tdata.cisco_core_data->sig = SIGFPE; break;
	196	/* trapv instruction */
	197	case 7 : abfd->tdata.cisco_core_data->sig = SIGFPE; break;
	198	/* privilege violation */
	199	case 8 : abfd->tdata.cisco_core_data->sig = SIGSEGV; break;
	200	/* trace trap */
	201	case 9 : abfd->tdata.cisco_core_data->sig = SIGTRAP; break;
	202	/* line 1010 emulator */
	203	case 10: abfd->tdata.cisco_core_data->sig = SIGILL; break;
	204	/* line 1111 emulator */
	205	case 11: abfd->tdata.cisco_core_data->sig = SIGILL; break;
	206
	207	/* Coprocessor protocol violation. Using a standard MMU or FPU
	208	this cannot be triggered by software. Call it a SIGBUS. */
	209	case 13: abfd->tdata.cisco_core_data->sig = SIGBUS; break;
	210
	211	/* interrupt */
	212	case 31: abfd->tdata.cisco_core_data->sig = SIGINT; break;
	213	/* breakpoint */
	214	case 33: abfd->tdata.cisco_core_data->sig = SIGTRAP; break;
	215
	216	/* floating point err */
	217	case 48: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
	218	/* floating point err */
	219	case 49: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
	220	/* zero divide */
	221	case 50: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
	222	/* underflow */
	223	case 51: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
	224	/* operand error */
	225	case 52: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
226	/* overflow */
227	case 53: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
228	/* NAN */
229	case 54: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
230	default:
231	#ifndef SIGEMT
232	#define SIGEMT SIGTRAP
233	#endif
234	/* "software generated"*/
235	abfd->tdata.cisco_core_data->sig = SIGEMT;
236	}
237	break;
238	default:
239	/* Unknown crash reason. */
240	abfd->tdata.cisco_core_data->sig = 0;
241	break;
242	}
243
9e7b37b3 AM	244	/* Create a ".data" section that maps the entire file, which is
9e7b37b3 AM	245	essentially a dump of the target system's RAM. */
f4bda984	246
117ed4f8 AM	247	flags = SEC_ALLOC \| SEC_LOAD \| SEC_HAS_CONTENTS;
117ed4f8 AM	248	asect = bfd_make_section_anyway_with_flags (abfd, ".data", flags);
252b5132 RH	249	if (asect == NULL)
252b5132 RH	250	goto error_return;
9e7b37b3	251	/* The size of memory is the size of the core file itself. */
eea6121a	252	asect->size = statbuf.st_size;
9e7b37b3 AM	253	asect->vma = rambase;
9e7b37b3 AM	254	asect->filepos = 0;
252b5132	255
f4bda984	256	/* Create a ".crash" section to allow access to the saved
e60b52c6	257	crash information. */
f4bda984	258
117ed4f8 AM	259	flags = SEC_HAS_CONTENTS;
117ed4f8 AM	260	asect = bfd_make_section_anyway_with_flags (abfd, ".crash", flags);
f4bda984 RH	261	if (asect == NULL)
f4bda984 RH	262	goto error_return;
f4bda984 RH	263	asect->vma = 0;
f4bda984 RH	264	asect->filepos = crashinfo_offset;
eea6121a	265	asect->size = sizeof (crashinfo);
f4bda984	266
9e7b37b3 AM	267	/* Create a ".reg" section to allow access to the saved
9e7b37b3 AM	268	registers. */
f4bda984	269
117ed4f8	270	asect = bfd_make_section_anyway_with_flags (abfd, ".reg", flags);
252b5132 RH	271	if (asect == NULL)
252b5132 RH	272	goto error_return;
9e7b37b3 AM	273	asect->vma = 0;
	274	asect->filepos = bfd_get_32 (abfd, crashinfo.registers) - rambase;
	275	/* Since we don't know the exact size of the saved register info,
	276	choose a register section size that is either the remaining part
	277	of the file, or 1024, whichever is smaller. */
	278	nread = statbuf.st_size - asect->filepos;
eea6121a	279	asect->size = (nread < 1024) ? nread : 1024;
252b5132 RH	280
	281	return abfd->xvec;
	282
f4bda984	283	/* Get here if we have already started filling out the BFD
e60b52c6	284	and there is an error of some kind. */
f4bda984	285
252b5132	286	error_return:
9e7b37b3 AM	287	bfd_release (abfd, abfd->tdata.any);
	288	abfd->tdata.any = NULL;
	289	bfd_section_list_clear (abfd);
	290	return NULL;
252b5132 RH	291	}
252b5132 RH	292
f4bda984 RH	293	static const bfd_target *
	294	cisco_core_file_p (abfd)
	295	bfd *abfd;
	296	{
	297	int *crash_info_locp;
	298	const bfd_target *target = NULL;
	299
	300	for (crash_info_locp = crash_info_locs;
	301	*crash_info_locp != -1 && target == NULL;
	302	crash_info_locp++)
	303	{
	304	target = cisco_core_file_validate (abfd, *crash_info_locp);
	305	}
	306	return (target);
	307	}
	308
252b5132 RH	309	char *
252b5132 RH	310	cisco_core_file_failing_command (abfd)
dc810e39	311	bfd *abfd ATTRIBUTE_UNUSED;
252b5132 RH	312	{
	313	return NULL;
	314	}
	315
	316	int
	317	cisco_core_file_failing_signal (abfd)
dc810e39	318	bfd *abfd ATTRIBUTE_UNUSED;
252b5132 RH	319	{
	320	return abfd->tdata.cisco_core_data->sig;
	321	}
252b5132	322	\f
f4bda984 RH	323	extern const bfd_target cisco_core_little_vec;
	324
	325	const bfd_target cisco_core_big_vec =
252b5132	326	{
f4bda984	327	"cisco-ios-core-big",
252b5132 RH	328	bfd_target_unknown_flavour,
	329	BFD_ENDIAN_BIG, /* target byte order */
	330	BFD_ENDIAN_BIG, /* target headers byte order */
	331	(HAS_RELOC \| EXEC_P \| /* object flags */
	332	HAS_LINENO \| HAS_DEBUG \|
	333	HAS_SYMS \| HAS_LOCALS \| WP_TEXT \| D_PAGED),
	334	(SEC_HAS_CONTENTS \| SEC_ALLOC \| SEC_LOAD \| SEC_RELOC), /* section flags */
	335	0, /* symbol prefix */
	336	' ', /* ar_pad_char */
	337	16, /* ar_max_namelen */
	338	bfd_getb64, bfd_getb_signed_64, bfd_putb64,
	339	bfd_getb32, bfd_getb_signed_32, bfd_putb32,
	340	bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
	341	bfd_getb64, bfd_getb_signed_64, bfd_putb64,
	342	bfd_getb32, bfd_getb_signed_32, bfd_putb32,
	343	bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
	344
	345	{ /* bfd_check_format */
	346	_bfd_dummy_target, /* unknown format */
	347	_bfd_dummy_target, /* object file */
	348	_bfd_dummy_target, /* archive */
	349	cisco_core_file_p /* a core file */
	350	},
	351	{ /* bfd_set_format */
	352	bfd_false, bfd_false,
	353	bfd_false, bfd_false
	354	},
	355	{ /* bfd_write_contents */
	356	bfd_false, bfd_false,
	357	bfd_false, bfd_false
	358	},
e60b52c6	359
252b5132 RH	360	BFD_JUMP_TABLE_GENERIC (_bfd_generic),
	361	BFD_JUMP_TABLE_COPY (_bfd_generic),
	362	BFD_JUMP_TABLE_CORE (cisco),
	363	BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
	364	BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
	365	BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
	366	BFD_JUMP_TABLE_WRITE (_bfd_generic),
	367	BFD_JUMP_TABLE_LINK (_bfd_nolink),
	368	BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
	369
f4bda984	370	& cisco_core_little_vec,
e60b52c6	371
f4bda984 RH	372	(PTR) 0 /* backend_data */
	373	};
	374
	375	const bfd_target cisco_core_little_vec =
	376	{
	377	"cisco-ios-core-little",
	378	bfd_target_unknown_flavour,
	379	BFD_ENDIAN_LITTLE, /* target byte order */
	380	BFD_ENDIAN_LITTLE, /* target headers byte order */
	381	(HAS_RELOC \| EXEC_P \| /* object flags */
	382	HAS_LINENO \| HAS_DEBUG \|
	383	HAS_SYMS \| HAS_LOCALS \| WP_TEXT \| D_PAGED),
	384	(SEC_HAS_CONTENTS \| SEC_ALLOC \| SEC_LOAD \| SEC_RELOC), /* section flags */
	385	0, /* symbol prefix */
	386	' ', /* ar_pad_char */
	387	16, /* ar_max_namelen */
	388	bfd_getl64, bfd_getl_signed_64, bfd_putl64,
	389	bfd_getl32, bfd_getl_signed_32, bfd_putl32,
	390	bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
	391	bfd_getl64, bfd_getl_signed_64, bfd_putl64,
	392	bfd_getl32, bfd_getl_signed_32, bfd_putl32,
	393	bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
	394
	395	{ /* bfd_check_format */
	396	_bfd_dummy_target, /* unknown format */
	397	_bfd_dummy_target, /* object file */
	398	_bfd_dummy_target, /* archive */
	399	cisco_core_file_p /* a core file */
	400	},
	401	{ /* bfd_set_format */
	402	bfd_false, bfd_false,
	403	bfd_false, bfd_false
	404	},
	405	{ /* bfd_write_contents */
	406	bfd_false, bfd_false,
	407	bfd_false, bfd_false
	408	},
e60b52c6	409
f4bda984 RH	410	BFD_JUMP_TABLE_GENERIC (_bfd_generic),
	411	BFD_JUMP_TABLE_COPY (_bfd_generic),
	412	BFD_JUMP_TABLE_CORE (cisco),
	413	BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
	414	BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
	415	BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
	416	BFD_JUMP_TABLE_WRITE (_bfd_generic),
	417	BFD_JUMP_TABLE_LINK (_bfd_nolink),
	418	BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
	419
	420	&cisco_core_big_vec,
e60b52c6	421
252b5132 RH	422	(PTR) 0 /* backend_data */
252b5132 RH	423	};