1 /* Machine independent GDB support for core files on systems using "regsets".
3 Copyright (C) 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2003, 2007
4 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 2 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, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 Boston, MA 02110-1301, USA. */
23 /* This file is used by most systems that use ELF for their core
24 dumps. This includes most systems that have SVR4-ish variant of
25 /proc. For these systems, the registers are laid out the same way
26 in core files as in the gregset_t and fpregset_t structures that
27 are used in the interaction with /proc (Irix 4 is an exception and
28 therefore doesn't use this file). Quite a few systems without a
29 SVR4-ish /proc define these structures too, and can make use of
41 #include "gdb_string.h"
43 #ifdef HAVE_SYS_PROCFS_H
44 #include <sys/procfs.h>
47 /* Prototypes for supply_gregset etc. */
50 /* Provide registers to GDB from a core file.
52 CORE_REG_SECT points to an array of bytes, which are the contents
53 of a `note' from a core file which BFD thinks might contain
54 register contents. CORE_REG_SIZE is its size.
56 WHICH says which register set corelow suspects this is:
57 0 --- the general-purpose register set, in gregset_t format
58 2 --- the floating-point register set, in fpregset_t format
60 REG_ADDR is ignored. */
63 fetch_core_registers (struct regcache *regcache,
64 char *core_reg_sect, unsigned core_reg_size, int which,
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 (current_gdbarch) >= 0)
91 supply_fpregset (regcache, (const gdb_fpregset_t *) fpregset_p);
96 /* We've covered all the kinds of registers we know about here,
97 so this must be something we wouldn't know what to do with
98 anyway. Just ignore it. */
104 /* Register that we are able to handle ELF core file formats using
105 standard procfs "regset" structures. */
107 static struct core_fns regset_core_fns =
109 bfd_target_elf_flavour, /* core_flavour */
110 default_check_format, /* check_format */
111 default_core_sniffer, /* core_sniffer */
112 fetch_core_registers, /* core_read_registers */
116 /* Provide a prototype to silence -Wmissing-prototypes. */
117 extern void _initialize_core_regset (void);
120 _initialize_core_regset (void)
122 deprecated_add_core_fns (®set_core_fns);