| /* 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" |
| |
| static void fetch_core_registers PARAMS ((char *, unsigned, int, CORE_ADDR)); |
| |
| void _initialize_core_regset PARAMS ((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 ignored. |
| |
| NOTES |
| |
| Use the indicated sizes to validate the gregset and fpregset |
| structures. |
| */ |
| |
| static void |
| fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr) |
| char *core_reg_sect; |
| unsigned core_reg_size; |
| int which; |
| CORE_ADDR reg_addr; /* Unused in this version */ |
| { |
| #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 defined (FP0_REGNUM) |
| supply_fpregset (&fpregset); |
| #endif |
| } |
| } |
| #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 () |
| { |
| add_core_fns (®set_core_fns); |
| } |