Commit | Line | Data |
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a1df8e78 | 1 | /* Machine independent GDB support for core files on systems using "regsets". |
24418cfb | 2 | Copyright 1993-1998 Free Software Foundation, Inc. |
a1df8e78 FF |
3 | |
4 | This file is part of GDB. | |
5 | ||
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. | |
10 | ||
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. | |
15 | ||
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, Boston, MA 02111-1307, USA. */ | |
19 | ||
20 | ||
21 | /* N O T E S | |
22 | ||
23 | This file is used by most systems that implement /proc. For these systems, | |
24 | the general registers are laid out the same way in both the core file and | |
25 | the gregset_p structure. The current exception to this is Irix-4.*, where | |
26 | the gregset_p structure is split up into two pieces in the core file. | |
27 | ||
28 | The general register and floating point register sets are manipulated by | |
29 | separate ioctl's. This file makes the assumption that if FP0_REGNUM is | |
30 | defined, then support for the floating point register set is desired, | |
31 | regardless of whether or not the actual target has floating point hardware. | |
32 | ||
33 | */ | |
34 | ||
35 | #include "defs.h" | |
36 | ||
37 | #include <time.h> | |
4708ac65 | 38 | #ifdef HAVE_SYS_PROCFS_H |
a1df8e78 | 39 | #include <sys/procfs.h> |
4708ac65 | 40 | #endif |
a1df8e78 FF |
41 | #include <fcntl.h> |
42 | #include <errno.h> | |
43 | #include "gdb_string.h" | |
44 | ||
45 | #include "inferior.h" | |
46 | #include "target.h" | |
47 | #include "command.h" | |
48 | #include "gdbcore.h" | |
49 | ||
948a9d92 FF |
50 | static void fetch_core_registers PARAMS ((char *, unsigned, int, CORE_ADDR)); |
51 | ||
24418cfb JM |
52 | void _initialize_core_regset PARAMS ((void)); |
53 | ||
a1df8e78 FF |
54 | /* |
55 | ||
56 | GLOBAL FUNCTION | |
57 | ||
58 | fetch_core_registers -- fetch current registers from core file | |
59 | ||
60 | SYNOPSIS | |
61 | ||
62 | void fetch_core_registers (char *core_reg_sect, | |
63 | unsigned core_reg_size, | |
948a9d92 | 64 | int which, CORE_ADDR reg_addr) |
a1df8e78 FF |
65 | |
66 | DESCRIPTION | |
67 | ||
68 | Read the values of either the general register set (WHICH equals 0) | |
69 | or the floating point register set (WHICH equals 2) from the core | |
70 | file data (pointed to by CORE_REG_SECT), and update gdb's idea of | |
71 | their current values. The CORE_REG_SIZE parameter is ignored. | |
72 | ||
73 | NOTES | |
74 | ||
75 | Use the indicated sizes to validate the gregset and fpregset | |
76 | structures. | |
77 | */ | |
78 | ||
79 | static void | |
80 | fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr) | |
81 | char *core_reg_sect; | |
82 | unsigned core_reg_size; | |
83 | int which; | |
948a9d92 | 84 | CORE_ADDR reg_addr; /* Unused in this version */ |
a1df8e78 | 85 | { |
4708ac65 | 86 | #if defined (HAVE_GREGSET_T) && defined (HAVE_FPREGSET_T) |
a1df8e78 FF |
87 | gregset_t gregset; |
88 | fpregset_t fpregset; | |
89 | ||
90 | if (which == 0) | |
91 | { | |
92 | if (core_reg_size != sizeof (gregset)) | |
93 | { | |
94 | warning ("wrong size gregset struct in core file"); | |
95 | } | |
96 | else | |
97 | { | |
98 | memcpy ((char *) &gregset, core_reg_sect, sizeof (gregset)); | |
99 | supply_gregset (&gregset); | |
100 | } | |
101 | } | |
102 | else if (which == 2) | |
103 | { | |
104 | if (core_reg_size != sizeof (fpregset)) | |
105 | { | |
106 | warning ("wrong size fpregset struct in core file"); | |
107 | } | |
108 | else | |
109 | { | |
110 | memcpy ((char *) &fpregset, core_reg_sect, sizeof (fpregset)); | |
111 | #if defined (FP0_REGNUM) | |
112 | supply_fpregset (&fpregset); | |
113 | #endif | |
114 | } | |
115 | } | |
4708ac65 | 116 | #endif /* defined(HAVE_GREGSET_T) && defined (HAVE_FPREGSET_T) */ |
a1df8e78 FF |
117 | } |
118 | ||
119 | \f | |
120 | /* Register that we are able to handle ELF file formats using standard | |
121 | procfs "regset" structures. */ | |
122 | ||
123 | static struct core_fns regset_core_fns = | |
124 | { | |
125 | bfd_target_elf_flavour, | |
126 | fetch_core_registers, | |
127 | NULL | |
128 | }; | |
129 | ||
130 | void | |
131 | _initialize_core_regset () | |
132 | { | |
133 | add_core_fns (®set_core_fns); | |
134 | } |