#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include <signal.h>
#ifndef SIGTRAP
# define SIGTRAP 5
#endif
#ifndef SIGEMT
# define SIGEMT 6
#endif
#ifndef SIGBUS
# define SIGBUS 10
#endif
int crash_info_locs[] = {
0x0250,
0x0400,
0x0FFC,
0x3000,
0x4FFC,
-1
};
#define CRASH_MAGIC 0xdead1234
#define MASK_ADDR(x) ((x) & 0x0fffffff)
typedef enum {
CRASH_REASON_NOTCRASHED = 0,
CRASH_REASON_EXCEPTION = 1,
CRASH_REASON_CORRUPT = 2,
} crashreason;
typedef struct {
char magic[4];
char version[4];
char reason[4];
char cpu_vector[4];
char registers[4];
char rambase[4];
char textbase[4];
char database[4];
char bssbase[4];
} 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
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)
{
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)
{
rambase = 0;
}
else
{
rambase = bfd_get_32 (abfd, crashinfo.rambase);
}
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:
abfd->tdata.cisco_core_data->sig = 0;
break;
case CRASH_REASON_CORRUPT:
abfd->tdata.cisco_core_data->sig = 0;
break;
case CRASH_REASON_EXCEPTION:
switch (bfd_get_32 (abfd, crashinfo.cpu_vector))
{
case 2 : abfd->tdata.cisco_core_data->sig = SIGBUS; break;
case 3 : abfd->tdata.cisco_core_data->sig = SIGBUS; break;
case 4 : abfd->tdata.cisco_core_data->sig = SIGILL; break;
case 5 : abfd->tdata.cisco_core_data->sig = SIGFPE; break;
case 6 : abfd->tdata.cisco_core_data->sig = SIGFPE; break;
case 7 : abfd->tdata.cisco_core_data->sig = SIGFPE; break;
case 8 : abfd->tdata.cisco_core_data->sig = SIGSEGV; break;
case 9 : abfd->tdata.cisco_core_data->sig = SIGTRAP; break;
case 10: abfd->tdata.cisco_core_data->sig = SIGILL; break;
case 11: abfd->tdata.cisco_core_data->sig = SIGILL; break;
case 13: abfd->tdata.cisco_core_data->sig = SIGBUS; break;
case 31: abfd->tdata.cisco_core_data->sig = SIGINT; break;
case 33: abfd->tdata.cisco_core_data->sig = SIGTRAP; break;
case 48: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
case 49: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
case 50: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
case 51: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
case 52: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
case 53: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
case 54: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
default:
#ifndef SIGEMT
#define SIGEMT SIGTRAP
#endif
abfd->tdata.cisco_core_data->sig = SIGEMT;
}
break;
default:
abfd->tdata.cisco_core_data->sig = 0;
break;
}
flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS;
asect = bfd_make_section_anyway_with_flags (abfd, ".data", flags);
if (asect == NULL)
goto error_return;
asect->size = statbuf.st_size;
asect->vma = rambase;
asect->filepos = 0;
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);
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;
nread = statbuf.st_size - asect->filepos;
asect->size = (nread < 1024) ? nread : 1024;
return abfd->xvec;
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;
}
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,
BFD_ENDIAN_BIG,
(HAS_RELOC | EXEC_P |
HAS_LINENO | HAS_DEBUG |
HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC),
0,
' ',
16,
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
bfd_getb32, bfd_getb_signed_32, bfd_putb32,
bfd_getb16, bfd_getb_signed_16, bfd_putb16,
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
bfd_getb32, bfd_getb_signed_32, bfd_putb32,
bfd_getb16, bfd_getb_signed_16, bfd_putb16,
{
_bfd_dummy_target,
_bfd_dummy_target,
_bfd_dummy_target,
cisco_core_file_p
},
{
bfd_false, bfd_false,
bfd_false, bfd_false
},
{
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
};
const bfd_target cisco_core_little_vec =
{
"cisco-ios-core-little",
bfd_target_unknown_flavour,
BFD_ENDIAN_LITTLE,
BFD_ENDIAN_LITTLE,
(HAS_RELOC | EXEC_P |
HAS_LINENO | HAS_DEBUG |
HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC),
0,
' ',
16,
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
bfd_getl16, bfd_getl_signed_16, bfd_putl16,
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
bfd_getl16, bfd_getl_signed_16, bfd_putl16,
{
_bfd_dummy_target,
_bfd_dummy_target,
_bfd_dummy_target,
cisco_core_file_p
},
{
bfd_false, bfd_false,
bfd_false, bfd_false
},
{
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
};