8f96c0f1842a73932dacd154273d883421e6090c
1 /* Machine independent GDB support for core files on systems using "regsets".
2 Copyright 1993-1998 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
24 This file is used by most systems that implement /proc. For these systems,
25 the general registers are laid out the same way in both the core file and
26 the gregset_p structure. The current exception to this is Irix-4.*, where
27 the gregset_p structure is split up into two pieces in the core file.
29 The general register and floating point register sets are manipulated by
30 separate ioctl's. This file makes the assumption that if FP0_REGNUM is
31 defined, then support for the floating point register set is desired,
32 regardless of whether or not the actual target has floating point hardware.
39 #ifdef HAVE_SYS_PROCFS_H
40 #include <sys/procfs.h>
44 #include "gdb_string.h"
51 static void fetch_core_registers
PARAMS ((char *, unsigned, int, CORE_ADDR
));
53 void _initialize_core_regset
PARAMS ((void));
59 fetch_core_registers -- fetch current registers from core file
63 void fetch_core_registers (char *core_reg_sect,
64 unsigned core_reg_size,
65 int which, CORE_ADDR reg_addr)
69 Read the values of either the general register set (WHICH equals 0)
70 or the floating point register set (WHICH equals 2) from the core
71 file data (pointed to by CORE_REG_SECT), and update gdb's idea of
72 their current values. The CORE_REG_SIZE parameter is ignored.
76 Use the indicated sizes to validate the gregset and fpregset
81 fetch_core_registers (core_reg_sect
, core_reg_size
, which
, reg_addr
)
83 unsigned core_reg_size
;
85 CORE_ADDR reg_addr
; /* Unused in this version */
87 #if defined (HAVE_GREGSET_T) && defined (HAVE_FPREGSET_T)
93 if (core_reg_size
!= sizeof (gregset
))
95 warning ("wrong size gregset struct in core file");
99 memcpy ((char *) &gregset
, core_reg_sect
, sizeof (gregset
));
100 supply_gregset (&gregset
);
105 if (core_reg_size
!= sizeof (fpregset
))
107 warning ("wrong size fpregset struct in core file");
111 memcpy ((char *) &fpregset
, core_reg_sect
, sizeof (fpregset
));
112 #if defined (FP0_REGNUM)
113 supply_fpregset (&fpregset
);
117 #endif /* defined(HAVE_GREGSET_T) && defined (HAVE_FPREGSET_T) */
121 /* Register that we are able to handle ELF file formats using standard
122 procfs "regset" structures. */
124 static struct core_fns regset_core_fns
=
126 bfd_target_elf_flavour
, /* core_flavour */
127 default_check_format
, /* check_format */
128 default_core_sniffer
, /* core_sniffer */
129 fetch_core_registers
, /* core_read_registers */
134 _initialize_core_regset ()
136 add_core_fns (®set_core_fns
);