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

/* BFD back-end for CISCO crash dumps.

Copyright 1994 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.  */

#include "bfd.h"
#include "sysdep.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;
\f
struct cisco_core_struct
{
  int sig;
};
\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;
  int nread;
  unsigned int magic;
  unsigned int version;
  unsigned int rambase;
  sec_ptr asect;
  struct stat statbuf;

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

  nread = bfd_read (buf, 1, 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, 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_read (&crashinfo, 1, 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.  */

  abfd->tdata.cisco_core_data =
    ((struct cisco_core_struct *)
     bfd_zmalloc (sizeof (struct cisco_core_struct)));
  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;
    }

  abfd->sections = NULL;
  abfd->section_count = 0;

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

  asect = (asection *) bfd_zmalloc (sizeof (asection));
  if (asect == NULL)
    goto error_return;
  asect->name = ".reg";
  asect->flags = SEC_HAS_CONTENTS;
  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->_raw_size = (nread < 1024) ? nread : 1024;
  asect->next = abfd->sections;
  abfd->sections = asect;
  ++abfd->section_count;

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

  asect = (asection *) bfd_zmalloc (sizeof (asection));
  if (asect == NULL)
    goto error_return;
  asect->name = ".crash";
  asect->flags = SEC_HAS_CONTENTS;
  asect->vma = 0;
  asect->filepos = crashinfo_offset;
  asect->_raw_size = sizeof (crashinfo);
  asect->next = abfd->sections;
  abfd->sections = asect;
  ++abfd->section_count;

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

  asect = (asection *) bfd_zmalloc (sizeof (asection));
  if (asect == NULL)
    goto error_return;
  asect->name = ".data";
  asect->flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS;
  /* The size of memory is the size of the core file itself.  */
  asect->_raw_size = statbuf.st_size;
  asect->vma = rambase;
  asect->filepos = 0;
  asect->next = abfd->sections;
  abfd->sections = asect;
  ++abfd->section_count;

  return abfd->xvec;

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

 error_return:
  {
    sec_ptr nextsect;
    for (asect = abfd->sections; asect != NULL;)
      {
	nextsect = asect->next;
	free (asect);
	asect = nextsect;
      }
    free (abfd->tdata.cisco_core_data);
    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;
{
  return NULL;
}

int
cisco_core_file_failing_signal (abfd)
     bfd *abfd;
{
  return abfd->tdata.cisco_core_data->sig;
}

boolean
cisco_core_file_matches_executable_p (core_bfd, exec_bfd)
     bfd *core_bfd;
     bfd *exec_bfd;
{
  return true;
}
\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 RH	1	/* BFD back-end for CISCO crash dumps.
	2
	3	Copyright 1994 Free Software Foundation, Inc.
	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"
	24	/* core_file_failing_signal returns a host signal (this probably should
	25	be fixed). */
	26	#include <signal.h>
	27
	28	/* for MSVC builds */
	29	#ifndef SIGTRAP
	30	# define SIGTRAP 5
	31	#endif
	32	#ifndef SIGEMT
	33	# define SIGEMT 6
	34	#endif
	35	#ifndef SIGBUS
	36	# define SIGBUS 10
	37	#endif
	38	\f
f4bda984 RH	39	int crash_info_locs[] = {
	40	0x0250, /* mips, ppc, x86, i960 */
	41	0x0400, /* m68k, mips, x86, i960 */
	42	0x0FFC, /* m68k, mips, ppc, x86, i960 */
	43	0x3000, /* ppc */
	44	0x4FFC, /* m68k */
	45	-1
	46	};
	47
	48	#define CRASH_MAGIC 0xdead1234
	49	#define MASK_ADDR(x) ((x) & 0x0fffffff) /* Mask crash info address */
252b5132 RH	50
	51	typedef enum {
	52	CRASH_REASON_NOTCRASHED = 0,
	53	CRASH_REASON_EXCEPTION = 1,
	54	CRASH_REASON_CORRUPT = 2,
f4bda984	55	} crashreason;
252b5132	56
f4bda984 RH	57	typedef struct {
f4bda984 RH	58	char magic[4]; /* Magic number */
252b5132 RH	59	char version[4]; /* Version number */
	60	char reason[4]; /* Crash reason */
	61	char cpu_vector[4]; /* CPU vector for exceptions */
	62	char registers[4]; /* Pointer to saved registers */
	63	char rambase[4]; /* Base of RAM (not in V1 crash info) */
f4bda984 RH	64	char textbase[4]; /* Base of .text section (not in V3 crash info) */
	65	char database[4]; /* Base of .data section (not in V3 crash info) */
	66	char bssbase[4]; /* Base of .bss section (not in V3 crash info) */
	67	} crashinfo_external;
252b5132 RH	68	\f
	69	struct cisco_core_struct
	70	{
	71	int sig;
	72	};
	73	\f
f4bda984 RH	74	/* Examine the file for a crash info struct at the offset given by
	75	CRASH_INFO_LOC. */
	76
252b5132	77	static const bfd_target *
f4bda984	78	cisco_core_file_validate (abfd, crash_info_loc)
252b5132	79	bfd *abfd;
f4bda984	80	int crash_info_loc;
252b5132 RH	81	{
	82	char buf[4];
	83	unsigned int crashinfo_offset;
f4bda984	84	crashinfo_external crashinfo;
252b5132	85	int nread;
f4bda984 RH	86	unsigned int magic;
f4bda984 RH	87	unsigned int version;
252b5132 RH	88	unsigned int rambase;
	89	sec_ptr asect;
	90	struct stat statbuf;
	91
f4bda984	92	if (bfd_seek (abfd, crash_info_loc, SEEK_SET) != 0)
252b5132 RH	93	return NULL;
	94
	95	nread = bfd_read (buf, 1, 4, abfd);
	96	if (nread != 4)
	97	{
	98	if (bfd_get_error () != bfd_error_system_call)
	99	bfd_set_error (bfd_error_wrong_format);
	100	return NULL;
	101	}
f4bda984	102	crashinfo_offset = MASK_ADDR (bfd_get_32 (abfd, buf));
252b5132 RH	103
252b5132 RH	104	if (bfd_seek (abfd, crashinfo_offset, SEEK_SET) != 0)
f4bda984 RH	105	{
	106	/* Most likely we failed because of a bogus (huge) offset */
	107	bfd_set_error (bfd_error_wrong_format);
	108	return NULL;
	109	}
252b5132 RH	110
	111	nread = bfd_read (&crashinfo, 1, sizeof (crashinfo), abfd);
	112	if (nread != sizeof (crashinfo))
	113	{
	114	if (bfd_get_error () != bfd_error_system_call)
	115	bfd_set_error (bfd_error_wrong_format);
	116	return NULL;
	117	}
	118
	119	if (bfd_stat (abfd, &statbuf) < 0)
	120	{
	121	bfd_set_error (bfd_error_system_call);
	122	return NULL;
	123	}
	124
f4bda984 RH	125	magic = bfd_get_32 (abfd, crashinfo.magic);
f4bda984 RH	126	if (magic != CRASH_MAGIC)
252b5132 RH	127	{
	128	bfd_set_error (bfd_error_wrong_format);
	129	return NULL;
	130	}
	131
f4bda984 RH	132	version = bfd_get_32 (abfd, crashinfo.version);
f4bda984 RH	133	if (version == 0)
252b5132	134	{
252b5132 RH	135	bfd_set_error (bfd_error_wrong_format);
252b5132 RH	136	return NULL;
f4bda984 RH	137	}
	138	else if (version == 1)
	139	{
	140	/* V1 core dumps don't specify the dump base, assume 0 */
252b5132	141	rambase = 0;
f4bda984 RH	142	}
	143	else
	144	{
252b5132	145	rambase = bfd_get_32 (abfd, crashinfo.rambase);
252b5132 RH	146	}
	147
	148	/* OK, we believe you. You're a core file. */
	149
	150	abfd->tdata.cisco_core_data =
	151	((struct cisco_core_struct *)
	152	bfd_zmalloc (sizeof (struct cisco_core_struct)));
	153	if (abfd->tdata.cisco_core_data == NULL)
	154	return NULL;
	155
	156	switch ((crashreason) bfd_get_32 (abfd, crashinfo.reason))
	157	{
	158	case CRASH_REASON_NOTCRASHED:
	159	/* Crash file probably came from write core. */
	160	abfd->tdata.cisco_core_data->sig = 0;
	161	break;
	162	case CRASH_REASON_CORRUPT:
	163	/* The crash context area was corrupt -- proceed with caution.
	164	We have no way of passing this information back to the caller. */
	165	abfd->tdata.cisco_core_data->sig = 0;
	166	break;
	167	case CRASH_REASON_EXCEPTION:
	168	/* Crash occured due to CPU exception. */
	169
	170	/* This is 68k-specific; for MIPS we'll need to interpret
	171	cpu_vector differently based on the target configuration
	172	(since CISCO core files don't seem to have the processor
	173	encoded in them). */
	174
	175	switch (bfd_get_32 (abfd, crashinfo.cpu_vector))
	176	{
	177	/* bus error */
	178	case 2 : abfd->tdata.cisco_core_data->sig = SIGBUS; break;
	179	/* address error */
	180	case 3 : abfd->tdata.cisco_core_data->sig = SIGBUS; break;
	181	/* illegal instruction */
	182	case 4 : abfd->tdata.cisco_core_data->sig = SIGILL; break;
	183	/* zero divide */
	184	case 5 : abfd->tdata.cisco_core_data->sig = SIGFPE; break;
	185	/* chk instruction */
	186	case 6 : abfd->tdata.cisco_core_data->sig = SIGFPE; break;
	187	/* trapv instruction */
	188	case 7 : abfd->tdata.cisco_core_data->sig = SIGFPE; break;
	189	/* privilege violation */
	190	case 8 : abfd->tdata.cisco_core_data->sig = SIGSEGV; break;
	191	/* trace trap */
	192	case 9 : abfd->tdata.cisco_core_data->sig = SIGTRAP; break;
	193	/* line 1010 emulator */
	194	case 10: abfd->tdata.cisco_core_data->sig = SIGILL; break;
	195	/* line 1111 emulator */
	196	case 11: abfd->tdata.cisco_core_data->sig = SIGILL; break;
	197
	198	/* Coprocessor protocol violation. Using a standard MMU or FPU
	199	this cannot be triggered by software. Call it a SIGBUS. */
	200	case 13: abfd->tdata.cisco_core_data->sig = SIGBUS; break;
	201
	202	/* interrupt */
	203	case 31: abfd->tdata.cisco_core_data->sig = SIGINT; break;
	204	/* breakpoint */
	205	case 33: abfd->tdata.cisco_core_data->sig = SIGTRAP; break;
	206
	207	/* floating point err */
	208	case 48: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
	209	/* floating point err */
210	case 49: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
211	/* zero divide */
212	case 50: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
213	/* underflow */
214	case 51: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
215	/* operand error */
216	case 52: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
217	/* overflow */
218	case 53: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
219	/* NAN */
220	case 54: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
221	default:
222	#ifndef SIGEMT
223	#define SIGEMT SIGTRAP
224	#endif
225	/* "software generated"*/
226	abfd->tdata.cisco_core_data->sig = SIGEMT;
227	}
228	break;
229	default:
230	/* Unknown crash reason. */
231	abfd->tdata.cisco_core_data->sig = 0;
232	break;
233	}
234
235	abfd->sections = NULL;
236	abfd->section_count = 0;
237
f4bda984 RH	238	/* Create a ".reg" section to allow access to the saved
	239	registers. */
	240
252b5132 RH	241	asect = (asection *) bfd_zmalloc (sizeof (asection));
	242	if (asect == NULL)
	243	goto error_return;
	244	asect->name = ".reg";
	245	asect->flags = SEC_HAS_CONTENTS;
252b5132 RH	246	asect->vma = 0;
252b5132 RH	247	asect->filepos = bfd_get_32 (abfd, crashinfo.registers) - rambase;
f4bda984 RH	248	/* Since we don't know the exact size of the saved register info,
	249	choose a register section size that is either the remaining part
	250	of the file, or 1024, whichever is smaller. */
	251	nread = statbuf.st_size - asect->filepos;
	252	asect->_raw_size = (nread < 1024) ? nread : 1024;
252b5132 RH	253	asect->next = abfd->sections;
	254	abfd->sections = asect;
	255	++abfd->section_count;
	256
f4bda984 RH	257	/* Create a ".crash" section to allow access to the saved
	258	crash information. */
	259
	260	asect = (asection *) bfd_zmalloc (sizeof (asection));
	261	if (asect == NULL)
	262	goto error_return;
	263	asect->name = ".crash";
	264	asect->flags = SEC_HAS_CONTENTS;
	265	asect->vma = 0;
	266	asect->filepos = crashinfo_offset;
	267	asect->_raw_size = sizeof (crashinfo);
	268	asect->next = abfd->sections;
	269	abfd->sections = asect;
	270	++abfd->section_count;
	271
	272	/* Create a ".data" section that maps the entire file, which is
	273	essentially a dump of the target system's RAM. */
	274
252b5132 RH	275	asect = (asection *) bfd_zmalloc (sizeof (asection));
	276	if (asect == NULL)
	277	goto error_return;
	278	asect->name = ".data";
	279	asect->flags = SEC_ALLOC \| SEC_LOAD \| SEC_HAS_CONTENTS;
	280	/* The size of memory is the size of the core file itself. */
	281	asect->_raw_size = statbuf.st_size;
	282	asect->vma = rambase;
	283	asect->filepos = 0;
	284	asect->next = abfd->sections;
	285	abfd->sections = asect;
	286	++abfd->section_count;
	287
	288	return abfd->xvec;
	289
f4bda984 RH	290	/* Get here if we have already started filling out the BFD
	291	and there is an error of some kind. */
	292
252b5132 RH	293	error_return:
	294	{
	295	sec_ptr nextsect;
	296	for (asect = abfd->sections; asect != NULL;)
	297	{
	298	nextsect = asect->next;
	299	free (asect);
	300	asect = nextsect;
	301	}
	302	free (abfd->tdata.cisco_core_data);
	303	return NULL;
	304	}
	305	}
	306
f4bda984 RH	307	static const bfd_target *
	308	cisco_core_file_p (abfd)
	309	bfd *abfd;
	310	{
	311	int *crash_info_locp;
	312	const bfd_target *target = NULL;
	313
	314	for (crash_info_locp = crash_info_locs;
	315	*crash_info_locp != -1 && target == NULL;
	316	crash_info_locp++)
	317	{
	318	target = cisco_core_file_validate (abfd, *crash_info_locp);
	319	}
	320	return (target);
	321	}
	322
252b5132 RH	323	char *
	324	cisco_core_file_failing_command (abfd)
	325	bfd *abfd;
	326	{
	327	return NULL;
	328	}
	329
	330	int
	331	cisco_core_file_failing_signal (abfd)
	332	bfd *abfd;
	333	{
	334	return abfd->tdata.cisco_core_data->sig;
	335	}
	336
	337	boolean
	338	cisco_core_file_matches_executable_p (core_bfd, exec_bfd)
	339	bfd *core_bfd;
	340	bfd *exec_bfd;
	341	{
	342	return true;
	343	}
	344	\f
f4bda984 RH	345	extern const bfd_target cisco_core_little_vec;
	346
	347	const bfd_target cisco_core_big_vec =
252b5132	348	{
f4bda984	349	"cisco-ios-core-big",
252b5132 RH	350	bfd_target_unknown_flavour,
	351	BFD_ENDIAN_BIG, /* target byte order */
	352	BFD_ENDIAN_BIG, /* target headers byte order */
	353	(HAS_RELOC \| EXEC_P \| /* object flags */
	354	HAS_LINENO \| HAS_DEBUG \|
	355	HAS_SYMS \| HAS_LOCALS \| WP_TEXT \| D_PAGED),
	356	(SEC_HAS_CONTENTS \| SEC_ALLOC \| SEC_LOAD \| SEC_RELOC), /* section flags */
	357	0, /* symbol prefix */
	358	' ', /* ar_pad_char */
	359	16, /* ar_max_namelen */
	360	bfd_getb64, bfd_getb_signed_64, bfd_putb64,
	361	bfd_getb32, bfd_getb_signed_32, bfd_putb32,
	362	bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
	363	bfd_getb64, bfd_getb_signed_64, bfd_putb64,
	364	bfd_getb32, bfd_getb_signed_32, bfd_putb32,
	365	bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
	366
	367	{ /* bfd_check_format */
	368	_bfd_dummy_target, /* unknown format */
	369	_bfd_dummy_target, /* object file */
	370	_bfd_dummy_target, /* archive */
	371	cisco_core_file_p /* a core file */
	372	},
	373	{ /* bfd_set_format */
	374	bfd_false, bfd_false,
	375	bfd_false, bfd_false
	376	},
	377	{ /* bfd_write_contents */
	378	bfd_false, bfd_false,
	379	bfd_false, bfd_false
	380	},
	381
	382	BFD_JUMP_TABLE_GENERIC (_bfd_generic),
	383	BFD_JUMP_TABLE_COPY (_bfd_generic),
	384	BFD_JUMP_TABLE_CORE (cisco),
	385	BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
	386	BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
	387	BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
	388	BFD_JUMP_TABLE_WRITE (_bfd_generic),
	389	BFD_JUMP_TABLE_LINK (_bfd_nolink),
	390	BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
	391
f4bda984 RH	392	& cisco_core_little_vec,
	393
	394	(PTR) 0 /* backend_data */
	395	};
	396
	397	const bfd_target cisco_core_little_vec =
	398	{
	399	"cisco-ios-core-little",
	400	bfd_target_unknown_flavour,
	401	BFD_ENDIAN_LITTLE, /* target byte order */
	402	BFD_ENDIAN_LITTLE, /* target headers byte order */
	403	(HAS_RELOC \| EXEC_P \| /* object flags */
	404	HAS_LINENO \| HAS_DEBUG \|
	405	HAS_SYMS \| HAS_LOCALS \| WP_TEXT \| D_PAGED),
	406	(SEC_HAS_CONTENTS \| SEC_ALLOC \| SEC_LOAD \| SEC_RELOC), /* section flags */
	407	0, /* symbol prefix */
	408	' ', /* ar_pad_char */
	409	16, /* ar_max_namelen */
	410	bfd_getl64, bfd_getl_signed_64, bfd_putl64,
	411	bfd_getl32, bfd_getl_signed_32, bfd_putl32,
	412	bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
	413	bfd_getl64, bfd_getl_signed_64, bfd_putl64,
	414	bfd_getl32, bfd_getl_signed_32, bfd_putl32,
	415	bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
	416
	417	{ /* bfd_check_format */
	418	_bfd_dummy_target, /* unknown format */
	419	_bfd_dummy_target, /* object file */
	420	_bfd_dummy_target, /* archive */
	421	cisco_core_file_p /* a core file */
	422	},
	423	{ /* bfd_set_format */
	424	bfd_false, bfd_false,
	425	bfd_false, bfd_false
	426	},
	427	{ /* bfd_write_contents */
	428	bfd_false, bfd_false,
	429	bfd_false, bfd_false
	430	},
	431
	432	BFD_JUMP_TABLE_GENERIC (_bfd_generic),
	433	BFD_JUMP_TABLE_COPY (_bfd_generic),
	434	BFD_JUMP_TABLE_CORE (cisco),
	435	BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
	436	BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
	437	BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
	438	BFD_JUMP_TABLE_WRITE (_bfd_generic),
	439	BFD_JUMP_TABLE_LINK (_bfd_nolink),
	440	BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
	441
	442	&cisco_core_big_vec,
c3c89269	443
252b5132 RH	444	(PTR) 0 /* backend_data */
252b5132 RH	445	};