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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 | ||
28 | static char *registers; | |
29 | static int register_bytes; | |
30 | ||
31 | static struct reg *reg_defs; | |
32 | static int num_registers; | |
33 | ||
34 | const char **gdbserver_expedite_regs; | |
35 | ||
36 | int | |
37 | registers_length (void) | |
38 | { | |
39 | return 2 * register_bytes; | |
40 | } | |
41 | ||
42 | void | |
43 | set_register_cache (struct reg *regs, int n) | |
44 | { | |
45 | int offset, i; | |
46 | ||
47 | reg_defs = regs; | |
48 | num_registers = n; | |
49 | ||
50 | offset = 0; | |
51 | for (i = 0; i < n; i++) | |
52 | { | |
53 | regs[i].offset = offset; | |
54 | offset += regs[i].size; | |
55 | } | |
56 | ||
57 | register_bytes = offset / 8; | |
58 | registers = malloc (offset / 8); | |
59 | if (!registers) | |
60 | fatal ("Could not allocate register cache."); | |
61 | } | |
62 | ||
63 | void | |
64 | registers_to_string (char *buf) | |
65 | { | |
66 | convert_int_to_ascii (registers, buf, register_bytes); | |
67 | } | |
68 | ||
69 | void | |
70 | registers_from_string (char *buf) | |
71 | { | |
72 | int len = strlen (buf); | |
73 | ||
74 | if (len != register_bytes * 2) | |
75 | { | |
76 | warning ("Wrong sized register packet (expected %d bytes, got %d)", 2*register_bytes, len); | |
77 | if (len > register_bytes * 2) | |
78 | len = register_bytes * 2; | |
79 | } | |
80 | convert_ascii_to_int (buf, registers, len / 2); | |
81 | } | |
82 | ||
83 | struct reg * | |
84 | find_register_by_name (const char *name) | |
85 | { | |
86 | int i; | |
87 | ||
88 | for (i = 0; i < num_registers; i++) | |
89 | if (!strcmp (name, reg_defs[i].name)) | |
90 | return ®_defs[i]; | |
91 | fatal ("Unknown register %s requested", name); | |
92 | return 0; | |
93 | } | |
94 | ||
95 | int | |
96 | find_regno (const char *name) | |
97 | { | |
98 | int i; | |
99 | ||
100 | for (i = 0; i < num_registers; i++) | |
101 | if (!strcmp (name, reg_defs[i].name)) | |
102 | return i; | |
103 | fatal ("Unknown register %s requested", name); | |
104 | return -1; | |
105 | } | |
106 | ||
107 | struct reg * | |
108 | find_register_by_number (int n) | |
109 | { | |
110 | return ®_defs[n]; | |
111 | } | |
112 | ||
113 | int | |
114 | register_size (int n) | |
115 | { | |
116 | return reg_defs[n].size / 8; | |
117 | } | |
118 | ||
119 | char * | |
120 | register_data (int n) | |
121 | { | |
122 | return registers + (reg_defs[n].offset / 8); | |
123 | } | |
124 | ||
58caa3dc DJ |
125 | void |
126 | supply_register (int n, const char *buf) | |
127 | { | |
128 | memcpy (register_data (n), buf, register_size (n)); | |
129 | } | |
130 | ||
131 | void | |
132 | supply_register_by_name (const char *name, const char *buf) | |
133 | { | |
134 | supply_register (find_regno (name), buf); | |
135 | } | |
136 | ||
137 | void | |
138 | collect_register (int n, char *buf) | |
139 | { | |
140 | memcpy (buf, register_data (n), register_size (n)); | |
141 | } | |
142 | ||
143 | void | |
144 | collect_register_by_name (const char *name, char *buf) | |
145 | { | |
146 | collect_register (find_regno (name), buf); | |
147 | } |