1 /* Machine independent GDB support for core files on systems using "regsets".
3 Copyright (C) 1993-2014 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 /* This file is used by most systems that use ELF for their core
21 dumps. This includes most systems that have SVR4-ish variant of
22 /proc. For these systems, the registers are laid out the same way
23 in core files as in the gregset_t and fpregset_t structures that
24 are used in the interaction with /proc (Irix 4 is an exception and
25 therefore doesn't use this file). Quite a few systems without a
26 SVR4-ish /proc define these structures too, and can make use of
38 #ifdef HAVE_SYS_PROCFS_H
39 #include <sys/procfs.h>
42 /* Prototypes for supply_gregset etc. */
45 /* Provide registers to GDB from a core file.
47 CORE_REG_SECT points to an array of bytes, which are the contents
48 of a `note' from a core file which BFD thinks might contain
49 register contents. CORE_REG_SIZE is its size.
51 WHICH says which register set corelow suspects this is:
52 0 --- the general-purpose register set, in gregset_t format
53 2 --- the floating-point register set, in fpregset_t format
55 REG_ADDR is ignored. */
58 fetch_core_registers (struct regcache
*regcache
,
60 unsigned core_reg_size
,
64 gdb_gregset_t gregset
;
65 gdb_fpregset_t fpregset
;
66 gdb_gregset_t
*gregset_p
= &gregset
;
67 gdb_fpregset_t
*fpregset_p
= &fpregset
;
72 if (core_reg_size
!= sizeof (gregset
))
73 warning (_("Wrong size gregset in core file."));
76 memcpy (&gregset
, core_reg_sect
, sizeof (gregset
));
77 supply_gregset (regcache
, (const gdb_gregset_t
*) gregset_p
);
82 if (core_reg_size
!= sizeof (fpregset
))
83 warning (_("Wrong size fpregset in core file."));
86 memcpy (&fpregset
, core_reg_sect
, sizeof (fpregset
));
87 if (gdbarch_fp0_regnum (get_regcache_arch (regcache
)) >= 0)
88 supply_fpregset (regcache
,
89 (const gdb_fpregset_t
*) fpregset_p
);
94 /* We've covered all the kinds of registers we know about here,
95 so this must be something we wouldn't know what to do with
96 anyway. Just ignore it. */
102 /* Register that we are able to handle ELF core file formats using
103 standard procfs "regset" structures. */
105 static struct core_fns regset_core_fns
=
107 bfd_target_elf_flavour
, /* core_flavour */
108 default_check_format
, /* check_format */
109 default_core_sniffer
, /* core_sniffer */
110 fetch_core_registers
, /* core_read_registers */
114 /* Provide a prototype to silence -Wmissing-prototypes. */
115 extern void _initialize_core_regset (void);
118 _initialize_core_regset (void)
120 deprecated_add_core_fns (®set_core_fns
);
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