old-cross-binutils/bfd/ptrace-core.c
Ian Lance Taylor 6812b6077e * targets.c (bfd_target): Rearranged fields in target vector.
Removed _bfd_debug_info_start, _bfd_debug_info_end and
	_bfd_debug_info_accumulate, which were never used.
	(BFD_JUMP_TABLE_GENERIC, BFD_JUMP_TABLE_COPY): Defined.
	(BFD_JUMP_TABLE_CORE, BFD_JUMP_TABLE_ARCHIVE): Defined.
	(BFD_JUMP_TABLE_SYMBOLS, BFD_JUMP_TABLE_RELOCS): Defined.
	(BFD_JUMP_TABLE_WRITE, BFD_JUMP_TABLE_LINK): Defined.
	* All backends: Changed to use the new BFD_JUMP_TABLE_* macros
	rather than the single JUMP_TABLE macro.  Removed many of the
	weird macro definitions needed to support the monolithic
	JUMP_TABLE.
	* bfd-in.h (JUMP_TABLE): Removed.
	* libbfd-in.h: Define a bunch of macros, and declare a few
	functions, for use with the new BFD_JUMP_TABLE_* macros.
	* libbfd.c (_bfd_dummy_new_section_hook): Removed.
	(bfd_false): Set bfd_error_invalid_operation.
	(bfd_nullvoidptr): Likewise.
	(bfd_n1): New function.
	(_bfd_nocore_core_file_matches_executable_p): Renamed from
	_bfd_dummy_core_file_matches_executable_p.
	(_bfd_nocore_core_file_failing_command): Similar rename.  Set
	bfd_error_invalid_operation.
	(_bfd_nocore_core_file_failing_signal): Likewise.
	(_bfd_generic_get_section_contents): Renamed from
	bfd_generic_get_section_contents.  Changed all callers.
	(_bfd_generic_set_section_contents): Similar rename.
	* ieee.c: #if 0 out ieee_bfd_debug_info_start,
	ieee_bfd_debug_info_end, ieee_bfd_debug_info_accumulate.  They
	were never called.
	* bfd-in2.h: Rebuilt.
	* libbfd.h: Rebuilt.
1994-04-06 22:00:40 +00:00

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/* BFD backend for core files which use the ptrace_user structure
Copyright 1993 Free Software Foundation, Inc.
The structure of this file is based on trad-core.c written by John Gilmore
of Cygnus Support.
Modified to work with the ptrace_user structure by Kevin A. Buettner.
(Longterm it may be better to merge this file with trad-core.c)
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.
To use this file on a particular host, configure the host with these
parameters in the config/h-HOST file:
HDEFINES=-DPTRACE_CORE
HDEPFILES=ptrace-core.o
*/
#ifdef PTRACE_CORE
#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include <stdio.h>
#include <sys/types.h>
#include <sys/param.h>
#include <sys/dir.h>
#include <signal.h>
#include <errno.h>
#include <unistd.h>
#include <sys/ptrace.h>
struct trad_core_struct
{
asection *data_section;
asection *stack_section;
asection *reg_section;
struct ptrace_user u;
} *rawptr;
#define core_upage(bfd) (&((bfd)->tdata.trad_core_data->u))
#define core_datasec(bfd) ((bfd)->tdata.trad_core_data->data_section)
#define core_stacksec(bfd) ((bfd)->tdata.trad_core_data->stack_section)
#define core_regsec(bfd) ((bfd)->tdata.trad_core_data->reg_section)
/* forward declarations */
bfd_target * ptrace_unix_core_file_p PARAMS ((bfd *abfd));
char * ptrace_unix_core_file_failing_command PARAMS ((bfd *abfd));
int ptrace_unix_core_file_failing_signal PARAMS ((bfd *abfd));
boolean ptrace_unix_core_file_matches_executable_p
PARAMS ((bfd *core_bfd, bfd *exec_bfd));
/* ARGSUSED */
bfd_target *
ptrace_unix_core_file_p (abfd)
bfd *abfd;
{
int val;
struct ptrace_user u;
val = bfd_read ((void *)&u, 1, sizeof u, abfd);
if (val != sizeof u || u.pt_magic != _BCS_PTRACE_MAGIC
|| u.pt_rev != _BCS_PTRACE_REV)
{
/* Too small to be a core file */
bfd_set_error (bfd_error_wrong_format);
return 0;
}
/* OK, we believe you. You're a core file (sure, sure). */
/* Allocate both the upage and the struct core_data at once, so
a single free() will free them both. */
rawptr = (struct trad_core_struct *)
bfd_zalloc (abfd, sizeof (struct trad_core_struct));
if (rawptr == NULL) {
bfd_set_error (bfd_error_no_memory);
return 0;
}
abfd->tdata.trad_core_data = rawptr;
rawptr->u = u; /*Copy the uarea into the tdata part of the bfd */
/* Create the sections. This is raunchy, but bfd_close wants to free
them separately. */
core_stacksec(abfd) = (asection *) bfd_zmalloc (sizeof (asection));
if (core_stacksec (abfd) == NULL) {
loser:
bfd_set_error (bfd_error_no_memory);
free ((void *)rawptr);
return 0;
}
core_datasec (abfd) = (asection *) zalloc (sizeof (asection));
if (core_datasec (abfd) == NULL) {
loser1:
free ((void *)core_stacksec (abfd));
goto loser;
}
core_regsec (abfd) = (asection *) zalloc (sizeof (asection));
if (core_regsec (abfd) == NULL) {
free ((void *)core_datasec (abfd));
goto loser1;
}
core_stacksec (abfd)->name = ".stack";
core_datasec (abfd)->name = ".data";
core_regsec (abfd)->name = ".reg";
/* FIXME: Need to worry about shared memory, library data, and library
text. I don't think that any of these things are supported on the
system on which I am developing this for though. */
core_stacksec (abfd)->flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
core_datasec (abfd)->flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
core_regsec (abfd)->flags = SEC_ALLOC + SEC_HAS_CONTENTS;
core_datasec (abfd)->_raw_size = u.pt_dsize;
core_stacksec (abfd)->_raw_size = u.pt_ssize;
core_regsec (abfd)->_raw_size = sizeof(u);
core_datasec (abfd)->vma = u.pt_o_data_start;
core_stacksec (abfd)->vma = USRSTACK - u.pt_ssize;
core_regsec (abfd)->vma = 0 - sizeof(u); /* see trad-core.c */
core_datasec (abfd)->filepos = (int) u.pt_dataptr;
core_stacksec (abfd)->filepos = (int) (u.pt_dataptr + u.pt_dsize);
core_regsec (abfd)->filepos = 0; /* Register segment is ptrace_user */
/* Align to word at least */
core_stacksec (abfd)->alignment_power = 2;
core_datasec (abfd)->alignment_power = 2;
core_regsec (abfd)->alignment_power = 2;
abfd->sections = core_stacksec (abfd);
core_stacksec (abfd)->next = core_datasec (abfd);
core_datasec (abfd)->next = core_regsec (abfd);
abfd->section_count = 3;
return abfd->xvec;
}
char *
ptrace_unix_core_file_failing_command (abfd)
bfd *abfd;
{
char *com = abfd->tdata.trad_core_data->u.pt_comm;
if (*com)
return com;
else
return 0;
}
/* ARGSUSED */
int
ptrace_unix_core_file_failing_signal (abfd)
bfd *abfd;
{
return abfd->tdata.trad_core_data->u.pt_sigframe.sig_num;
}
/* ARGSUSED */
boolean
ptrace_unix_core_file_matches_executable_p (core_bfd, exec_bfd)
bfd *core_bfd, *exec_bfd;
{
/* FIXME: Use pt_timdat field of the ptrace_user structure to match
the date of the executable */
return true;
}
/* If somebody calls any byte-swapping routines, shoot them. */
void
swap_abort()
{
abort(); /* This way doesn't require any declaration for ANSI to fuck up */
}
#define NO_GET ((bfd_vma (*) PARAMS (( const bfd_byte *))) swap_abort )
#define NO_PUT ((void (*) PARAMS ((bfd_vma, bfd_byte *))) swap_abort )
#define NO_SIGNED_GET \
((bfd_signed_vma (*) PARAMS ((const bfd_byte *))) swap_abort )
bfd_target ptrace_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 */
NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit data */
NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit data */
NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit data */
NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit hdrs */
NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit hdrs */
NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit hdrs */
{ /* bfd_check_format */
_bfd_dummy_target, /* unknown format */
_bfd_dummy_target, /* object file */
_bfd_dummy_target, /* archive */
ptrace_unix_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 (ptrace_unix),
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 */
};
#endif /* PTRACE_CORE */