1 /* Machine independent GDB support for core files on systems using "regsets".
3 Copyright (C) 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2003, 2007, 2008,
4 2009, 2010, 2011 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 /* This file is used by most systems that use ELF for their core
22 dumps. This includes most systems that have SVR4-ish variant of
23 /proc. For these systems, the registers are laid out the same way
24 in core files as in the gregset_t and fpregset_t structures that
25 are used in the interaction with /proc (Irix 4 is an exception and
26 therefore doesn't use this file). Quite a few systems without a
27 SVR4-ish /proc define these structures too, and can make use of
39 #include "gdb_string.h"
41 #ifdef HAVE_SYS_PROCFS_H
42 #include <sys/procfs.h>
45 /* Prototypes for supply_gregset etc. */
48 /* Provide registers to GDB from a core file.
50 CORE_REG_SECT points to an array of bytes, which are the contents
51 of a `note' from a core file which BFD thinks might contain
52 register contents. CORE_REG_SIZE is its size.
54 WHICH says which register set corelow suspects this is:
55 0 --- the general-purpose register set, in gregset_t format
56 2 --- the floating-point register set, in fpregset_t format
58 REG_ADDR is ignored. */
61 fetch_core_registers (struct regcache
*regcache
,
63 unsigned core_reg_size
,
67 gdb_gregset_t gregset
;
68 gdb_fpregset_t fpregset
;
69 gdb_gregset_t
*gregset_p
= &gregset
;
70 gdb_fpregset_t
*fpregset_p
= &fpregset
;
75 if (core_reg_size
!= sizeof (gregset
))
76 warning (_("Wrong size gregset in core file."));
79 memcpy (&gregset
, core_reg_sect
, sizeof (gregset
));
80 supply_gregset (regcache
, (const gdb_gregset_t
*) gregset_p
);
85 if (core_reg_size
!= sizeof (fpregset
))
86 warning (_("Wrong size fpregset in core file."));
89 memcpy (&fpregset
, core_reg_sect
, sizeof (fpregset
));
90 if (gdbarch_fp0_regnum (get_regcache_arch (regcache
)) >= 0)
91 supply_fpregset (regcache
,
92 (const gdb_fpregset_t
*) fpregset_p
);
97 /* We've covered all the kinds of registers we know about here,
98 so this must be something we wouldn't know what to do with
99 anyway. Just ignore it. */
105 /* Register that we are able to handle ELF core file formats using
106 standard procfs "regset" structures. */
108 static struct core_fns regset_core_fns
=
110 bfd_target_elf_flavour
, /* core_flavour */
111 default_check_format
, /* check_format */
112 default_core_sniffer
, /* core_sniffer */
113 fetch_core_registers
, /* core_read_registers */
117 /* Provide a prototype to silence -Wmissing-prototypes. */
118 extern void _initialize_core_regset (void);
121 _initialize_core_regset (void)
123 deprecated_add_core_fns (®set_core_fns
);
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