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/* Machine independent GDB support for core files on systems using "regsets".
Copyright (C) 1993-1996, 1998-2000, 2003, 2007-2012 Free Software
Foundation, Inc.
This file is part of GDB.
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 3 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
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, see <>. */
/* This file is used by most systems that use ELF for their core
dumps. This includes most systems that have SVR4-ish variant of
/proc. For these systems, the registers are laid out the same way
in core files as in the gregset_t and fpregset_t structures that
are used in the interaction with /proc (Irix 4 is an exception and
therefore doesn't use this file). Quite a few systems without a
SVR4-ish /proc define these structures too, and can make use of
this code too. */
#include "defs.h"
#include "command.h"
#include "gdbcore.h"
#include "inferior.h"
#include "target.h"
#include "regcache.h"
#include <fcntl.h>
#include <errno.h>
#include "gdb_string.h"
#include <time.h>
#include <sys/procfs.h>
/* Prototypes for supply_gregset etc. */
#include "gregset.h"
/* Provide registers to GDB from a core file.
CORE_REG_SECT points to an array of bytes, which are the contents
of a `note' from a core file which BFD thinks might contain
register contents. CORE_REG_SIZE is its size.
WHICH says which register set corelow suspects this is:
0 --- the general-purpose register set, in gregset_t format
2 --- the floating-point register set, in fpregset_t format
REG_ADDR is ignored. */
static void
fetch_core_registers (struct regcache *regcache,
char *core_reg_sect,
unsigned core_reg_size,
int which,
CORE_ADDR reg_addr)
gdb_gregset_t gregset;
gdb_fpregset_t fpregset;
gdb_gregset_t *gregset_p = &gregset;
gdb_fpregset_t *fpregset_p = &fpregset;
switch (which)
case 0:
if (core_reg_size != sizeof (gregset))
warning (_("Wrong size gregset in core file."));
memcpy (&gregset, core_reg_sect, sizeof (gregset));
supply_gregset (regcache, (const gdb_gregset_t *) gregset_p);
case 2:
if (core_reg_size != sizeof (fpregset))
warning (_("Wrong size fpregset in core file."));
memcpy (&fpregset, core_reg_sect, sizeof (fpregset));
if (gdbarch_fp0_regnum (get_regcache_arch (regcache)) >= 0)
supply_fpregset (regcache,
(const gdb_fpregset_t *) fpregset_p);
/* We've covered all the kinds of registers we know about here,
so this must be something we wouldn't know what to do with
anyway. Just ignore it. */
/* Register that we are able to handle ELF core file formats using
standard procfs "regset" structures. */
static struct core_fns regset_core_fns =
bfd_target_elf_flavour, /* core_flavour */
default_check_format, /* check_format */
default_core_sniffer, /* core_sniffer */
fetch_core_registers, /* core_read_registers */
NULL /* next */
/* Provide a prototype to silence -Wmissing-prototypes. */
extern void _initialize_core_regset (void);
_initialize_core_regset (void)
deprecated_add_core_fns (&regset_core_fns);