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0a30fbc4 DJ |
1 | /* Register support routines for the remote server for GDB. |
2 | Copyright 2001, 2002 | |
3 | Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GDB. | |
6 | ||
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 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
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. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | #include "server.h" | |
23 | #include "regdef.h" | |
24 | ||
25 | #include <stdlib.h> | |
26 | #include <string.h> | |
27 | ||
c04a1aa8 DJ |
28 | struct inferior_regcache_data |
29 | { | |
30 | char *registers; | |
31 | }; | |
32 | ||
0a30fbc4 DJ |
33 | static int register_bytes; |
34 | ||
35 | static struct reg *reg_defs; | |
36 | static int num_registers; | |
37 | ||
38 | const char **gdbserver_expedite_regs; | |
39 | ||
c04a1aa8 DJ |
40 | static struct inferior_regcache_data * |
41 | get_regcache (struct inferior_info *inf) | |
42 | { | |
43 | struct inferior_regcache_data *regcache; | |
44 | ||
45 | regcache = (struct inferior_regcache_data *) inferior_regcache_data (inf); | |
46 | ||
47 | if (regcache == NULL) | |
48 | fatal ("no register cache"); | |
49 | ||
50 | return regcache; | |
51 | } | |
52 | ||
0a30fbc4 DJ |
53 | int |
54 | registers_length (void) | |
55 | { | |
56 | return 2 * register_bytes; | |
57 | } | |
58 | ||
c04a1aa8 DJ |
59 | void |
60 | create_register_cache (struct inferior_info *inferior) | |
61 | { | |
62 | struct inferior_regcache_data *regcache; | |
63 | ||
64 | regcache = malloc (sizeof (*regcache)); | |
65 | ||
66 | regcache->registers = malloc (register_bytes); | |
67 | if (regcache->registers == NULL) | |
68 | fatal ("Could not allocate register cache."); | |
69 | ||
70 | set_inferior_regcache_data (inferior, regcache); | |
71 | } | |
72 | ||
73 | void | |
74 | free_register_cache (struct inferior_info *inferior) | |
75 | { | |
76 | free (get_regcache (current_inferior)->registers); | |
77 | free (get_regcache (current_inferior)); | |
78 | set_inferior_regcache_data (inferior, NULL); | |
79 | } | |
80 | ||
0a30fbc4 DJ |
81 | void |
82 | set_register_cache (struct reg *regs, int n) | |
83 | { | |
84 | int offset, i; | |
85 | ||
86 | reg_defs = regs; | |
87 | num_registers = n; | |
88 | ||
89 | offset = 0; | |
90 | for (i = 0; i < n; i++) | |
91 | { | |
92 | regs[i].offset = offset; | |
93 | offset += regs[i].size; | |
94 | } | |
95 | ||
96 | register_bytes = offset / 8; | |
0a30fbc4 DJ |
97 | } |
98 | ||
99 | void | |
100 | registers_to_string (char *buf) | |
101 | { | |
c04a1aa8 DJ |
102 | char *registers = get_regcache (current_inferior)->registers; |
103 | ||
0a30fbc4 DJ |
104 | convert_int_to_ascii (registers, buf, register_bytes); |
105 | } | |
106 | ||
107 | void | |
108 | registers_from_string (char *buf) | |
109 | { | |
110 | int len = strlen (buf); | |
c04a1aa8 | 111 | char *registers = get_regcache (current_inferior)->registers; |
0a30fbc4 DJ |
112 | |
113 | if (len != register_bytes * 2) | |
114 | { | |
115 | warning ("Wrong sized register packet (expected %d bytes, got %d)", 2*register_bytes, len); | |
116 | if (len > register_bytes * 2) | |
117 | len = register_bytes * 2; | |
118 | } | |
119 | convert_ascii_to_int (buf, registers, len / 2); | |
120 | } | |
121 | ||
122 | struct reg * | |
123 | find_register_by_name (const char *name) | |
124 | { | |
125 | int i; | |
126 | ||
127 | for (i = 0; i < num_registers; i++) | |
128 | if (!strcmp (name, reg_defs[i].name)) | |
129 | return ®_defs[i]; | |
130 | fatal ("Unknown register %s requested", name); | |
131 | return 0; | |
132 | } | |
133 | ||
134 | int | |
135 | find_regno (const char *name) | |
136 | { | |
137 | int i; | |
138 | ||
139 | for (i = 0; i < num_registers; i++) | |
140 | if (!strcmp (name, reg_defs[i].name)) | |
141 | return i; | |
142 | fatal ("Unknown register %s requested", name); | |
143 | return -1; | |
144 | } | |
145 | ||
146 | struct reg * | |
147 | find_register_by_number (int n) | |
148 | { | |
149 | return ®_defs[n]; | |
150 | } | |
151 | ||
152 | int | |
153 | register_size (int n) | |
154 | { | |
155 | return reg_defs[n].size / 8; | |
156 | } | |
157 | ||
158 | char * | |
159 | register_data (int n) | |
160 | { | |
c04a1aa8 DJ |
161 | char *registers = get_regcache (current_inferior)->registers; |
162 | ||
0a30fbc4 DJ |
163 | return registers + (reg_defs[n].offset / 8); |
164 | } | |
165 | ||
58caa3dc | 166 | void |
0729219d | 167 | supply_register (int n, const void *buf) |
58caa3dc DJ |
168 | { |
169 | memcpy (register_data (n), buf, register_size (n)); | |
170 | } | |
171 | ||
172 | void | |
0729219d | 173 | supply_register_by_name (const char *name, const void *buf) |
58caa3dc DJ |
174 | { |
175 | supply_register (find_regno (name), buf); | |
176 | } | |
177 | ||
178 | void | |
0729219d | 179 | collect_register (int n, void *buf) |
58caa3dc DJ |
180 | { |
181 | memcpy (buf, register_data (n), register_size (n)); | |
182 | } | |
183 | ||
184 | void | |
0729219d | 185 | collect_register_by_name (const char *name, void *buf) |
58caa3dc DJ |
186 | { |
187 | collect_register (find_regno (name), buf); | |
188 | } |