/* Machine independent GDB support for core files on systems using "regsets".
|
/* Machine independent GDB support for core files on systems using "regsets".
|
|
|
Copyright (C) 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2003, 2007, 2008,
|
Copyright (C) 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2003, 2007, 2008,
|
2009, 2010 Free Software Foundation, Inc.
|
2009, 2010 Free Software Foundation, Inc.
|
|
|
This file is part of GDB.
|
This file is part of GDB.
|
|
|
This program is free software; you can redistribute it and/or modify
|
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
|
it under the terms of the GNU General Public License as published by
|
the Free Software Foundation; either version 3 of the License, or
|
the Free Software Foundation; either version 3 of the License, or
|
(at your option) any later version.
|
(at your option) any later version.
|
|
|
This program is distributed in the hope that it will be useful,
|
This program is distributed in the hope that it will be useful,
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
GNU General Public License for more details.
|
GNU General Public License for more details.
|
|
|
You should have received a copy of the GNU General Public License
|
You should have received a copy of the GNU General Public License
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
|
|
/* This file is used by most systems that use ELF for their core
|
/* This file is used by most systems that use ELF for their core
|
dumps. This includes most systems that have SVR4-ish variant of
|
dumps. This includes most systems that have SVR4-ish variant of
|
/proc. For these systems, the registers are laid out the same way
|
/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
|
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
|
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
|
therefore doesn't use this file). Quite a few systems without a
|
SVR4-ish /proc define these structures too, and can make use of
|
SVR4-ish /proc define these structures too, and can make use of
|
this code too. */
|
this code too. */
|
|
|
#include "defs.h"
|
#include "defs.h"
|
#include "command.h"
|
#include "command.h"
|
#include "gdbcore.h"
|
#include "gdbcore.h"
|
#include "inferior.h"
|
#include "inferior.h"
|
#include "target.h"
|
#include "target.h"
|
#include "regcache.h"
|
#include "regcache.h"
|
|
|
#include <fcntl.h>
|
#include <fcntl.h>
|
#include <errno.h>
|
#include <errno.h>
|
#include "gdb_string.h"
|
#include "gdb_string.h"
|
#include <time.h>
|
#include <time.h>
|
#ifdef HAVE_SYS_PROCFS_H
|
#ifdef HAVE_SYS_PROCFS_H
|
#include <sys/procfs.h>
|
#include <sys/procfs.h>
|
#endif
|
#endif
|
|
|
/* Prototypes for supply_gregset etc. */
|
/* Prototypes for supply_gregset etc. */
|
#include "gregset.h"
|
#include "gregset.h"
|
|
|
/* Provide registers to GDB from a core file.
|
/* Provide registers to GDB from a core file.
|
|
|
CORE_REG_SECT points to an array of bytes, which are the contents
|
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
|
of a `note' from a core file which BFD thinks might contain
|
register contents. CORE_REG_SIZE is its size.
|
register contents. CORE_REG_SIZE is its size.
|
|
|
WHICH says which register set corelow suspects this is:
|
WHICH says which register set corelow suspects this is:
|
0 --- the general-purpose register set, in gregset_t format
|
0 --- the general-purpose register set, in gregset_t format
|
2 --- the floating-point register set, in fpregset_t format
|
2 --- the floating-point register set, in fpregset_t format
|
|
|
REG_ADDR is ignored. */
|
REG_ADDR is ignored. */
|
|
|
static void
|
static void
|
fetch_core_registers (struct regcache *regcache,
|
fetch_core_registers (struct regcache *regcache,
|
char *core_reg_sect, unsigned core_reg_size, int which,
|
char *core_reg_sect, unsigned core_reg_size, int which,
|
CORE_ADDR reg_addr)
|
CORE_ADDR reg_addr)
|
{
|
{
|
gdb_gregset_t gregset;
|
gdb_gregset_t gregset;
|
gdb_fpregset_t fpregset;
|
gdb_fpregset_t fpregset;
|
gdb_gregset_t *gregset_p = &gregset;
|
gdb_gregset_t *gregset_p = &gregset;
|
gdb_fpregset_t *fpregset_p = &fpregset;
|
gdb_fpregset_t *fpregset_p = &fpregset;
|
|
|
switch (which)
|
switch (which)
|
{
|
{
|
case 0:
|
case 0:
|
if (core_reg_size != sizeof (gregset))
|
if (core_reg_size != sizeof (gregset))
|
warning (_("Wrong size gregset in core file."));
|
warning (_("Wrong size gregset in core file."));
|
else
|
else
|
{
|
{
|
memcpy (&gregset, core_reg_sect, sizeof (gregset));
|
memcpy (&gregset, core_reg_sect, sizeof (gregset));
|
supply_gregset (regcache, (const gdb_gregset_t *) gregset_p);
|
supply_gregset (regcache, (const gdb_gregset_t *) gregset_p);
|
}
|
}
|
break;
|
break;
|
|
|
case 2:
|
case 2:
|
if (core_reg_size != sizeof (fpregset))
|
if (core_reg_size != sizeof (fpregset))
|
warning (_("Wrong size fpregset in core file."));
|
warning (_("Wrong size fpregset in core file."));
|
else
|
else
|
{
|
{
|
memcpy (&fpregset, core_reg_sect, sizeof (fpregset));
|
memcpy (&fpregset, core_reg_sect, sizeof (fpregset));
|
if (gdbarch_fp0_regnum (get_regcache_arch (regcache)) >= 0)
|
if (gdbarch_fp0_regnum (get_regcache_arch (regcache)) >= 0)
|
supply_fpregset (regcache, (const gdb_fpregset_t *) fpregset_p);
|
supply_fpregset (regcache, (const gdb_fpregset_t *) fpregset_p);
|
}
|
}
|
break;
|
break;
|
|
|
default:
|
default:
|
/* We've covered all the kinds of registers we know about here,
|
/* 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
|
so this must be something we wouldn't know what to do with
|
anyway. Just ignore it. */
|
anyway. Just ignore it. */
|
break;
|
break;
|
}
|
}
|
}
|
}
|
|
|
|
|
/* Register that we are able to handle ELF core file formats using
|
/* Register that we are able to handle ELF core file formats using
|
standard procfs "regset" structures. */
|
standard procfs "regset" structures. */
|
|
|
static struct core_fns regset_core_fns =
|
static struct core_fns regset_core_fns =
|
{
|
{
|
bfd_target_elf_flavour, /* core_flavour */
|
bfd_target_elf_flavour, /* core_flavour */
|
default_check_format, /* check_format */
|
default_check_format, /* check_format */
|
default_core_sniffer, /* core_sniffer */
|
default_core_sniffer, /* core_sniffer */
|
fetch_core_registers, /* core_read_registers */
|
fetch_core_registers, /* core_read_registers */
|
NULL /* next */
|
NULL /* next */
|
};
|
};
|
|
|
/* Provide a prototype to silence -Wmissing-prototypes. */
|
/* Provide a prototype to silence -Wmissing-prototypes. */
|
extern void _initialize_core_regset (void);
|
extern void _initialize_core_regset (void);
|
|
|
void
|
void
|
_initialize_core_regset (void)
|
_initialize_core_regset (void)
|
{
|
{
|
deprecated_add_core_fns (®set_core_fns);
|
deprecated_add_core_fns (®set_core_fns);
|
}
|
}
|
|
|
