6edc8c58c6742e83e5dc2ebc1d91afeba256bc41
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
39 #ifdef HAVE_SYS_PROCFS_H
40 #include <sys/procfs.h>
43 /* Prototypes for supply_gregset etc. */
46 /* Provide registers to GDB from a core file.
48 CORE_REG_SECT points to an array of bytes, which are the contents
49 of a `note' from a core file which BFD thinks might contain
50 register contents. CORE_REG_SIZE is its size.
52 WHICH says which register set corelow suspects this is:
53 0 --- the general-purpose register set, in gregset_t format
54 2 --- the floating-point register set, in fpregset_t format
56 REG_ADDR is ignored. */
59 fetch_core_registers (struct regcache
*regcache
,
61 unsigned core_reg_size
,
65 gdb_gregset_t gregset
;
66 gdb_fpregset_t fpregset
;
67 gdb_gregset_t
*gregset_p
= &gregset
;
68 gdb_fpregset_t
*fpregset_p
= &fpregset
;
73 if (core_reg_size
!= sizeof (gregset
))
74 warning (_("Wrong size gregset in core file."));
77 memcpy (&gregset
, core_reg_sect
, sizeof (gregset
));
78 supply_gregset (regcache
, (const gdb_gregset_t
*) gregset_p
);
83 if (core_reg_size
!= sizeof (fpregset
))
84 warning (_("Wrong size fpregset in core file."));
87 memcpy (&fpregset
, core_reg_sect
, sizeof (fpregset
));
88 if (gdbarch_fp0_regnum (get_regcache_arch (regcache
)) >= 0)
89 supply_fpregset (regcache
,
90 (const gdb_fpregset_t
*) fpregset_p
);
95 /* We've covered all the kinds of registers we know about here,
96 so this must be something we wouldn't know what to do with
97 anyway. Just ignore it. */
103 /* Register that we are able to handle ELF core file formats using
104 standard procfs "regset" structures. */
106 static struct core_fns regset_core_fns
=
108 bfd_target_elf_flavour
, /* core_flavour */
109 default_check_format
, /* check_format */
110 default_core_sniffer
, /* core_sniffer */
111 fetch_core_registers
, /* core_read_registers */
115 /* Provide a prototype to silence -Wmissing-prototypes. */
116 extern void _initialize_core_regset (void);
119 _initialize_core_regset (void)
121 deprecated_add_core_fns (®set_core_fns
);
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