135 lines
3.8 KiB
C
135 lines
3.8 KiB
C
/* Machine independent GDB support for core files on systems using "regsets".
|
||
Copyright 1993-1998 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 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., 59 Temple Place - Suite 330,
|
||
Boston, MA 02111-1307, USA. */
|
||
|
||
|
||
/* N O T E S
|
||
|
||
This file is used by most systems that implement /proc. For these systems,
|
||
the general registers are laid out the same way in both the core file and
|
||
the gregset_p structure. The current exception to this is Irix-4.*, where
|
||
the gregset_p structure is split up into two pieces in the core file.
|
||
|
||
The general register and floating point register sets are manipulated by
|
||
separate ioctl's. This file makes the assumption that if FP0_REGNUM is
|
||
defined, then support for the floating point register set is desired,
|
||
regardless of whether or not the actual target has floating point hardware.
|
||
|
||
*/
|
||
|
||
#include "defs.h"
|
||
|
||
#include <time.h>
|
||
#ifdef HAVE_SYS_PROCFS_H
|
||
#include <sys/procfs.h>
|
||
#endif
|
||
#include <fcntl.h>
|
||
#include <errno.h>
|
||
#include "gdb_string.h"
|
||
|
||
#include "inferior.h"
|
||
#include "target.h"
|
||
#include "command.h"
|
||
#include "gdbcore.h"
|
||
|
||
/* Prototypes for supply_gregset etc. */
|
||
#include "gregset.h"
|
||
|
||
static void fetch_core_registers (char *, unsigned, int, CORE_ADDR);
|
||
|
||
void _initialize_core_regset (void);
|
||
|
||
/*
|
||
|
||
GLOBAL FUNCTION
|
||
|
||
fetch_core_registers -- fetch current registers from core file
|
||
|
||
SYNOPSIS
|
||
|
||
void fetch_core_registers (char *core_reg_sect,
|
||
unsigned core_reg_size,
|
||
int which, CORE_ADDR reg_addr)
|
||
|
||
DESCRIPTION
|
||
|
||
Read the values of either the general register set (WHICH equals 0)
|
||
or the floating point register set (WHICH equals 2) from the core
|
||
file data (pointed to by CORE_REG_SECT), and update gdb's idea of
|
||
their current values. The CORE_REG_SIZE parameter is compared to
|
||
the size of the gregset or fpgregset structures (as appropriate) to
|
||
validate the size of the structure from the core file. The
|
||
REG_ADDR parameter is ignored.
|
||
|
||
*/
|
||
|
||
static void
|
||
fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, int which,
|
||
CORE_ADDR reg_addr)
|
||
{
|
||
#if defined (HAVE_GREGSET_T) && defined (HAVE_FPREGSET_T)
|
||
gregset_t gregset;
|
||
fpregset_t fpregset;
|
||
|
||
if (which == 0)
|
||
{
|
||
if (core_reg_size != sizeof (gregset))
|
||
{
|
||
warning ("wrong size gregset struct in core file");
|
||
}
|
||
else
|
||
{
|
||
memcpy ((char *) &gregset, core_reg_sect, sizeof (gregset));
|
||
supply_gregset (&gregset);
|
||
}
|
||
}
|
||
else if (which == 2)
|
||
{
|
||
if (core_reg_size != sizeof (fpregset))
|
||
{
|
||
warning ("wrong size fpregset struct in core file");
|
||
}
|
||
else
|
||
{
|
||
memcpy ((char *) &fpregset, core_reg_sect, sizeof (fpregset));
|
||
if (FP0_REGNUM >= 0)
|
||
supply_fpregset (&fpregset);
|
||
}
|
||
}
|
||
#endif /* defined(HAVE_GREGSET_T) && defined (HAVE_FPREGSET_T) */
|
||
}
|
||
|
||
|
||
/* Register that we are able to handle ELF 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 */
|
||
};
|
||
|
||
void
|
||
_initialize_core_regset (void)
|
||
{
|
||
add_core_fns (®set_core_fns);
|
||
}
|