9deaaaf1b3
* bfd.c (bfd_free_cached_info): Define. * bfd-in.h (JUMP_TABLE): Add _bfd_free_cached_info. * bfd-in2.h: Rebuilt. * All backends: Initialize bfd_free_cached_info entry point to bfd_true.
383 lines
12 KiB
C
383 lines
12 KiB
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., 675 Mass Ave, Cambridge, MA 02139, 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>
|
||
|
||
#define CRASH_INFO (0xffc)
|
||
#define CRASH_MAGIC 0xdead1234
|
||
|
||
typedef enum {
|
||
CRASH_REASON_NOTCRASHED = 0,
|
||
CRASH_REASON_EXCEPTION = 1,
|
||
CRASH_REASON_CORRUPT = 2,
|
||
} crashreason;
|
||
|
||
struct crashinfo_external
|
||
{
|
||
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) */
|
||
};
|
||
|
||
struct cisco_core_struct
|
||
{
|
||
int sig;
|
||
};
|
||
|
||
static bfd_target *
|
||
cisco_core_file_p (abfd)
|
||
bfd *abfd;
|
||
{
|
||
char buf[4];
|
||
unsigned int crashinfo_offset;
|
||
struct crashinfo_external crashinfo;
|
||
int nread;
|
||
unsigned int rambase;
|
||
sec_ptr asect;
|
||
struct stat statbuf;
|
||
|
||
if (bfd_seek (abfd, CRASH_INFO, SEEK_SET) != 0)
|
||
return NULL;
|
||
|
||
nread = bfd_read (buf, 1, 4, abfd);
|
||
if (nread != 4)
|
||
{
|
||
/* Maybe the file is too small (FIXME: what about other errors). */
|
||
bfd_set_error (bfd_error_wrong_format);
|
||
return NULL;
|
||
}
|
||
crashinfo_offset = bfd_get_32 (abfd, buf);
|
||
|
||
if (bfd_seek (abfd, crashinfo_offset, SEEK_SET) != 0)
|
||
return NULL;
|
||
|
||
nread = bfd_read (&crashinfo, 1, sizeof (crashinfo), abfd);
|
||
if (nread != sizeof (crashinfo))
|
||
{
|
||
/* Maybe the file is too small (FIXME: what about other errors). */
|
||
bfd_set_error (bfd_error_wrong_format);
|
||
return NULL;
|
||
}
|
||
|
||
if (bfd_stat (abfd, &statbuf) < 0)
|
||
{
|
||
bfd_set_error (bfd_error_system_call);
|
||
return NULL;
|
||
}
|
||
|
||
if (bfd_get_32 (abfd, crashinfo.magic) != CRASH_MAGIC)
|
||
{
|
||
bfd_set_error (bfd_error_wrong_format);
|
||
return NULL;
|
||
}
|
||
|
||
switch (bfd_get_32 (abfd, crashinfo.version))
|
||
{
|
||
case 0:
|
||
bfd_set_error (bfd_error_wrong_format);
|
||
return NULL;
|
||
case 1:
|
||
rambase = 0;
|
||
break;
|
||
default:
|
||
case 2:
|
||
rambase = bfd_get_32 (abfd, crashinfo.rambase);
|
||
break;
|
||
}
|
||
|
||
/* 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)
|
||
{
|
||
bfd_set_error (bfd_error_no_memory);
|
||
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:
|
||
/* "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;
|
||
|
||
asect = (asection *) bfd_zmalloc (sizeof (asection));
|
||
if (asect == NULL)
|
||
{
|
||
bfd_set_error (bfd_error_no_memory);
|
||
goto error_return;
|
||
}
|
||
asect->name = ".reg";
|
||
asect->flags = SEC_ALLOC | SEC_HAS_CONTENTS;
|
||
/* This can be bigger than the real size. Set it to the size of the whole
|
||
core file. */
|
||
asect->_raw_size = statbuf.st_size;
|
||
asect->vma = 0;
|
||
asect->filepos = bfd_get_32 (abfd, crashinfo.registers) - rambase;
|
||
asect->next = abfd->sections;
|
||
abfd->sections = asect;
|
||
++abfd->section_count;
|
||
|
||
/* There is only one section containing data from the target system's RAM.
|
||
We call it .data. */
|
||
asect = (asection *) bfd_zmalloc (sizeof (asection));
|
||
if (asect == NULL)
|
||
{
|
||
bfd_set_error (bfd_error_no_memory);
|
||
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;
|
||
|
||
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;
|
||
}
|
||
}
|
||
|
||
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;
|
||
}
|
||
|
||
/* No archive file support via this BFD */
|
||
#define cisco_openr_next_archived_file bfd_generic_openr_next_archived_file
|
||
#define cisco_generic_stat_arch_elt bfd_generic_stat_arch_elt
|
||
#define cisco_slurp_armap bfd_false
|
||
#define cisco_slurp_extended_name_table bfd_true
|
||
#define cisco_write_armap (boolean (*) PARAMS \
|
||
((bfd *arch, unsigned int elength, struct orl *map, \
|
||
unsigned int orl_count, int stridx))) bfd_false
|
||
#define cisco_truncate_arname bfd_dont_truncate_arname
|
||
#define aout_32_openr_next_archived_file bfd_generic_openr_next_archived_file
|
||
|
||
#define cisco_close_and_cleanup bfd_generic_close_and_cleanup
|
||
#define cisco_set_section_contents (boolean (*) PARAMS \
|
||
((bfd *abfd, asection *section, PTR data, file_ptr offset, \
|
||
bfd_size_type count))) bfd_generic_set_section_contents
|
||
#define cisco_get_section_contents bfd_generic_get_section_contents
|
||
#define cisco_new_section_hook (boolean (*) PARAMS \
|
||
((bfd *, sec_ptr))) bfd_true
|
||
#define cisco_get_symtab_upper_bound bfd_0l
|
||
#define cisco_get_symtab (long (*) PARAMS \
|
||
((bfd *, struct symbol_cache_entry **))) bfd_0l
|
||
#define cisco_get_reloc_upper_bound (long (*) PARAMS \
|
||
((bfd *, sec_ptr))) bfd_0l
|
||
#define cisco_canonicalize_reloc (long (*) PARAMS \
|
||
((bfd *, sec_ptr, arelent **, struct symbol_cache_entry**))) bfd_0l
|
||
#define cisco_make_empty_symbol (struct symbol_cache_entry * \
|
||
(*) PARAMS ((bfd *))) bfd_false
|
||
#define cisco_print_symbol (void (*) PARAMS \
|
||
((bfd *, PTR, struct symbol_cache_entry *, \
|
||
bfd_print_symbol_type))) bfd_false
|
||
#define cisco_get_symbol_info (void (*) PARAMS \
|
||
((bfd *, struct symbol_cache_entry *, \
|
||
symbol_info *))) bfd_false
|
||
#define cisco_get_lineno (alent * (*) PARAMS \
|
||
((bfd *, struct symbol_cache_entry *))) bfd_nullvoidptr
|
||
#define cisco_set_arch_mach (boolean (*) PARAMS \
|
||
((bfd *, enum bfd_architecture, unsigned long))) bfd_false
|
||
#define cisco_find_nearest_line (boolean (*) PARAMS \
|
||
((bfd *abfd, struct sec *section, \
|
||
struct symbol_cache_entry **symbols,bfd_vma offset, \
|
||
CONST char **file, CONST char **func, unsigned int *line))) bfd_false
|
||
#define cisco_sizeof_headers (int (*) PARAMS \
|
||
((bfd *, boolean))) bfd_0
|
||
|
||
#define cisco_bfd_debug_info_start bfd_void
|
||
#define cisco_bfd_debug_info_end bfd_void
|
||
#define cisco_bfd_debug_info_accumulate (void (*) PARAMS \
|
||
((bfd *, struct sec *))) bfd_void
|
||
#define cisco_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
|
||
#define cisco_bfd_relax_section bfd_generic_relax_section
|
||
#define cisco_bfd_reloc_type_lookup \
|
||
((CONST struct reloc_howto_struct *(*) PARAMS ((bfd *, bfd_reloc_code_real_type))) bfd_nullvoidptr)
|
||
#define cisco_bfd_make_debug_symbol \
|
||
((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
|
||
#define cisco_bfd_link_hash_table_create \
|
||
((struct bfd_link_hash_table *(*) PARAMS ((bfd *))) bfd_nullvoidptr)
|
||
#define cisco_bfd_link_add_symbols \
|
||
((boolean (*) PARAMS ((bfd *, struct bfd_link_info *))) bfd_false)
|
||
#define cisco_bfd_final_link \
|
||
((boolean (*) PARAMS ((bfd *, struct bfd_link_info *))) bfd_false)
|
||
#define cisco_bfd_copy_private_section_data \
|
||
((boolean (*) PARAMS ((bfd *, asection *, bfd *, asection *))) bfd_false)
|
||
#define cisco_bfd_copy_private_bfd_data \
|
||
((boolean (*) PARAMS ((bfd *, bfd *))) bfd_false)
|
||
#define cisco_bfd_is_local_label \
|
||
((boolean (*) PARAMS ((bfd *, asymbol *))) bfd_false)
|
||
#define cisco_bfd_free_cached_info bfd_true
|
||
|
||
bfd_target cisco_core_vec =
|
||
{
|
||
"trad-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 */
|
||
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
|
||
},
|
||
|
||
JUMP_TABLE(cisco),
|
||
(PTR) 0 /* backend_data */
|
||
};
|