/* Machine independent GDB support for core files on systems using "regsets". Copyright 1993, 1994, 1995, 1996, 1998, 1999, 2000 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) { gdb_gregset_t gregset; gdb_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); } } } /* 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); }