binutils-gdb/bfd/cisco-core.c

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/* 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"
1994-03-19 18:51:39 +01:00
/* 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)
{
if (bfd_get_error () != bfd_error_system_call)
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))
{
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;
}
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. */
Wed Mar 30 16:25:41 1994 Ian Lance Taylor (ian@tweedledumb.cygnus.com) Changes to let BFD return an error indication from get_symtab_upper_bound, bfd_canonicalize_symtab, bfd_get_reloc_upper_bound, and bfd_canonicalize_reloc. They now return long instead of unsigned int, and use -1 to indicate an error. Along the way, rename get_symtab_upper_bound to bfd_get_symtab_upper_bound. * bfd.c (bfd_get_reloc_upper_bound): Return long, and -1 on errors. (bfd_canonicalize_reloc): Likewise. * syms.c (bfd_get_symtab_upper_bound): Renamed from get_symtab_upper_bound. * targets.c (bfd_target): Renamed _get_symtab_upper_bound to _bfd_get_symtab_upper_bound, and changed it and _bfd_canonicalize_symtab and _get_reloc_upper_bound and _bfd_canonicalize_reloc to all return long. * aoutx.h (NAME(aout,get_symtab)): Return long, and -1 on errors. (NAME(aout,canonicalize_reloc)): Likewise. (NAME(aout,get_reloc_upper_bound)): Likewise. (NAME(aout,get_symtab_upper_bound)): Likewise. * bout.c (b_out_canonicalize_reloc): Likewise. (b_out_get_reloc_upper_bound): Likewise. * coffcode.h (coff_canonicalize_reloc): Likewise. * coffgen.c (coff_get_symtab_upper_bound): Likewise. (coff_get_symtab): Likewise. (coff_get_reloc_upper_bound): Likewise. * ecoff.c (ecoff_get_symtab_upper_bound): Likewise. (ecoff_get_symtab): Likewise. (ecoff_canonicalize_reloc): Likewise. * elfcode.h (elf_get_symtab_upper_bound): Likewise. (elf_get_reloc_upper_bound): Likewise. (elf_canonicalize_reloc): Likewise. (elf_get_symtab): Likewise. * hp300hpux.c (MY(get_symtab)): Likewise. (MY(get_symtab_upper_bound)): Likewise. (MY(canonicalize_reloc)): Likewise. * i386lynx.c (NAME(lynx,canonicalize_reloc)): Likewise. * ieee.c (ieee_slurp_external_symbols): Change return type to boolean. Check for errors from get_symbol. (ieee_slurp_symbol_table): Change return type to boolean. Check for errors from ieee_slurp_external_symbols. (ieee_get_symtab_upper_bound): Return long, and -1 on errors. (ieee_get_symtab): Likewise. (ieee_get_reloc_upper_bound): Likewise. (ieee_canonicalize_reloc): Likewise. * mipsbsd.c (MY(canonicalize_reloc)): Likewise. * nlmcode.h (nlm_get_symtab_upper_bound): Likewise. (nlm_get_symtab): Likewise. (nlm_get_reloc_upper_bound): Likewise. (nlm_canonicalize_reloc): Likewise. * oasys.c (oasys_get_symtab_upper_bound): Likewise. (oasys_get_symtab): Likewise. (oasys_get_reloc_upper_bound): Likewise. (oasys_canonicalize_reloc): Likewise. * som.c (som_get_symtab_upper_bound): Likewise. (som_get_symtab): Likewise. (som_get_reloc_upper_bound): Likewise. (som_canonicalize_reloc): Likewise. * srec.c (srec_get_symtab_upper_bound): Likewise. (srec_get_symtab): Likewise. (srec_get_reloc_upper_bound): Define as bfd_0l. (srec_canonicalize_reloc): Likewise. * tekhex.c (tekhex_get_symtab): Return long, and -1 on errors. (tekhex_get_symtab_upper_bound): Likewise. (tekhex_get_reloc_upper_bound): Define as bfd_0l. (tekhex_canonicalize_reloc): Likewise. * libaout.h (NAME(aout,get_symtab_upper_bound)): Change declaration to return long. (NAME(aout,get_symtab)): Likewise. (NAME(aout,canonicalize_reloc)): Likewise. (NAME(aout,get_reloc_upper_bound)): Likewise. * libcoff-in.h (coff_get_symtab_upper_bound): Likewise. (coff_get_symtab): Likewise. (coff_get_reloc_upper_bound): Likewise. * libecoff.h (ecoff_get_symtab_upper_bound): Likewise. (ecoff_get_symtab): Likewise. (ecoff_canonicalize_reloc): Likewise. * libelf.h (bfd_elf32_get_symtab_upper_bound): Likewise. (bfd_elf32_get_symtab): Likewise. (bfd_elf32_get_reloc_upper_bound): Likewise. (bfd_elf32_canonicalize_reloc): Likewise. (bfd_elf64_get_symtab_upper_bound): Likewise. (bfd_elf64_get_symtab): Likewise. (bfd_elf64_get_reloc_upper_bound): Likewise. (bfd_elf64_canonicalize_reloc): Likewise. * libnlm.h (nlmNAME(get_symtab_upper_bound)): Likewise. (nlmNAME(get_symtab)): Likewise. (nlmNAME(get_reloc_upper_bound)): Likewise. (nlmNAME(canonicalize_reloc)): Likewise. * archive.c (compute_and_write_armap): Use error_return and no_memory_return labels rather than freeing information in various places. Change storage, symcount and src_count to long. Check errors from bfd_get_symtab_upper_bound and bfd_canonicalize_symtab. * bout.c (b_out_relax_section): Change reloc_size to long. Check for errors from bfd_get_reloc_upper_bound and bfd_canonicalize_reloc. (b_out_get_relocated_section_contents): Likewise. * coff-alpha.c (alpha_ecoff_get_relocated_section_contents): Likewise. * elf32-mips.c: Likewise. * elf32-hppa.c (hppa_elf_stub_finish): Likewise. (hppa_look_for_stubs_in_section): Check for errors from bfd_get_symtab_upper_bound, bfd_canonicalize_symtab, and bfd_canonicalize_reloc. * ecofflink.c (bfd_ecoff_debug_accumulate_other): Check for errors from bfd_get_symtab_upper_bound and bfd_canonicalize_symtab. * linker.c (generic_link_read_symbols): Likewise. (_bfd_generic_final_link): Check for errors from bfd_get_reloc_upper_bound and bfd_canonicalize_reloc. * reloc.c (bfd_generic_get_relocated_section_contents): Likewise. * reloc16.c (bfd_coff_reloc16_relax_section): Likewise. (bfd_coff_reloc16_get_relocated_section_contents): Likewise. * libbfd.c (bfd_0l): New function. * libbfd-in.h (bfd_0l): Declare. * aix386-core.c: Change get_symtab_upper_bound, get_symtab, get_reloc_upper_bound, and canonicalize_reloc to use bfd_0l rather than bfd_0u. * cisco-core.c, hppabsd-core.c, hpux-core.c: Likewise. * irix-core.c, osf-core.c, ptrace-core.c, trad-core.c: Likewise. * bfd-in2.h: Rebuilt. * libbfd.h: Rebuilt. * libcoff.h: Rebuilt. * nlm32-sparc.c (nlm_sparc_read_reloc): Remove unused variables temp and name.
1994-03-31 00:15:07 +02:00
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:
1994-03-19 18:51:39 +01:00
/* 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;
}
Wed Mar 30 16:25:41 1994 Ian Lance Taylor (ian@tweedledumb.cygnus.com) Changes to let BFD return an error indication from get_symtab_upper_bound, bfd_canonicalize_symtab, bfd_get_reloc_upper_bound, and bfd_canonicalize_reloc. They now return long instead of unsigned int, and use -1 to indicate an error. Along the way, rename get_symtab_upper_bound to bfd_get_symtab_upper_bound. * bfd.c (bfd_get_reloc_upper_bound): Return long, and -1 on errors. (bfd_canonicalize_reloc): Likewise. * syms.c (bfd_get_symtab_upper_bound): Renamed from get_symtab_upper_bound. * targets.c (bfd_target): Renamed _get_symtab_upper_bound to _bfd_get_symtab_upper_bound, and changed it and _bfd_canonicalize_symtab and _get_reloc_upper_bound and _bfd_canonicalize_reloc to all return long. * aoutx.h (NAME(aout,get_symtab)): Return long, and -1 on errors. (NAME(aout,canonicalize_reloc)): Likewise. (NAME(aout,get_reloc_upper_bound)): Likewise. (NAME(aout,get_symtab_upper_bound)): Likewise. * bout.c (b_out_canonicalize_reloc): Likewise. (b_out_get_reloc_upper_bound): Likewise. * coffcode.h (coff_canonicalize_reloc): Likewise. * coffgen.c (coff_get_symtab_upper_bound): Likewise. (coff_get_symtab): Likewise. (coff_get_reloc_upper_bound): Likewise. * ecoff.c (ecoff_get_symtab_upper_bound): Likewise. (ecoff_get_symtab): Likewise. (ecoff_canonicalize_reloc): Likewise. * elfcode.h (elf_get_symtab_upper_bound): Likewise. (elf_get_reloc_upper_bound): Likewise. (elf_canonicalize_reloc): Likewise. (elf_get_symtab): Likewise. * hp300hpux.c (MY(get_symtab)): Likewise. (MY(get_symtab_upper_bound)): Likewise. (MY(canonicalize_reloc)): Likewise. * i386lynx.c (NAME(lynx,canonicalize_reloc)): Likewise. * ieee.c (ieee_slurp_external_symbols): Change return type to boolean. Check for errors from get_symbol. (ieee_slurp_symbol_table): Change return type to boolean. Check for errors from ieee_slurp_external_symbols. (ieee_get_symtab_upper_bound): Return long, and -1 on errors. (ieee_get_symtab): Likewise. (ieee_get_reloc_upper_bound): Likewise. (ieee_canonicalize_reloc): Likewise. * mipsbsd.c (MY(canonicalize_reloc)): Likewise. * nlmcode.h (nlm_get_symtab_upper_bound): Likewise. (nlm_get_symtab): Likewise. (nlm_get_reloc_upper_bound): Likewise. (nlm_canonicalize_reloc): Likewise. * oasys.c (oasys_get_symtab_upper_bound): Likewise. (oasys_get_symtab): Likewise. (oasys_get_reloc_upper_bound): Likewise. (oasys_canonicalize_reloc): Likewise. * som.c (som_get_symtab_upper_bound): Likewise. (som_get_symtab): Likewise. (som_get_reloc_upper_bound): Likewise. (som_canonicalize_reloc): Likewise. * srec.c (srec_get_symtab_upper_bound): Likewise. (srec_get_symtab): Likewise. (srec_get_reloc_upper_bound): Define as bfd_0l. (srec_canonicalize_reloc): Likewise. * tekhex.c (tekhex_get_symtab): Return long, and -1 on errors. (tekhex_get_symtab_upper_bound): Likewise. (tekhex_get_reloc_upper_bound): Define as bfd_0l. (tekhex_canonicalize_reloc): Likewise. * libaout.h (NAME(aout,get_symtab_upper_bound)): Change declaration to return long. (NAME(aout,get_symtab)): Likewise. (NAME(aout,canonicalize_reloc)): Likewise. (NAME(aout,get_reloc_upper_bound)): Likewise. * libcoff-in.h (coff_get_symtab_upper_bound): Likewise. (coff_get_symtab): Likewise. (coff_get_reloc_upper_bound): Likewise. * libecoff.h (ecoff_get_symtab_upper_bound): Likewise. (ecoff_get_symtab): Likewise. (ecoff_canonicalize_reloc): Likewise. * libelf.h (bfd_elf32_get_symtab_upper_bound): Likewise. (bfd_elf32_get_symtab): Likewise. (bfd_elf32_get_reloc_upper_bound): Likewise. (bfd_elf32_canonicalize_reloc): Likewise. (bfd_elf64_get_symtab_upper_bound): Likewise. (bfd_elf64_get_symtab): Likewise. (bfd_elf64_get_reloc_upper_bound): Likewise. (bfd_elf64_canonicalize_reloc): Likewise. * libnlm.h (nlmNAME(get_symtab_upper_bound)): Likewise. (nlmNAME(get_symtab)): Likewise. (nlmNAME(get_reloc_upper_bound)): Likewise. (nlmNAME(canonicalize_reloc)): Likewise. * archive.c (compute_and_write_armap): Use error_return and no_memory_return labels rather than freeing information in various places. Change storage, symcount and src_count to long. Check errors from bfd_get_symtab_upper_bound and bfd_canonicalize_symtab. * bout.c (b_out_relax_section): Change reloc_size to long. Check for errors from bfd_get_reloc_upper_bound and bfd_canonicalize_reloc. (b_out_get_relocated_section_contents): Likewise. * coff-alpha.c (alpha_ecoff_get_relocated_section_contents): Likewise. * elf32-mips.c: Likewise. * elf32-hppa.c (hppa_elf_stub_finish): Likewise. (hppa_look_for_stubs_in_section): Check for errors from bfd_get_symtab_upper_bound, bfd_canonicalize_symtab, and bfd_canonicalize_reloc. * ecofflink.c (bfd_ecoff_debug_accumulate_other): Check for errors from bfd_get_symtab_upper_bound and bfd_canonicalize_symtab. * linker.c (generic_link_read_symbols): Likewise. (_bfd_generic_final_link): Check for errors from bfd_get_reloc_upper_bound and bfd_canonicalize_reloc. * reloc.c (bfd_generic_get_relocated_section_contents): Likewise. * reloc16.c (bfd_coff_reloc16_relax_section): Likewise. (bfd_coff_reloc16_get_relocated_section_contents): Likewise. * libbfd.c (bfd_0l): New function. * libbfd-in.h (bfd_0l): Declare. * aix386-core.c: Change get_symtab_upper_bound, get_symtab, get_reloc_upper_bound, and canonicalize_reloc to use bfd_0l rather than bfd_0u. * cisco-core.c, hppabsd-core.c, hpux-core.c: Likewise. * irix-core.c, osf-core.c, ptrace-core.c, trad-core.c: Likewise. * bfd-in2.h: Rebuilt. * libbfd.h: Rebuilt. * libcoff.h: Rebuilt. * nlm32-sparc.c (nlm_sparc_read_reloc): Remove unused variables temp and name.
1994-03-31 00:15:07 +02:00
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;
}
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
},
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),
(PTR) 0 /* backend_data */
};