1 /* Register support routines for the remote server for GDB.
3 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 2 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, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
28 struct inferior_regcache_data
33 static int register_bytes
;
35 static struct reg
*reg_defs
;
36 static int num_registers
;
38 const char **gdbserver_expedite_regs
;
40 static struct inferior_regcache_data
*
41 get_regcache (struct inferior_info
*inf
)
43 struct inferior_regcache_data
*regcache
;
45 regcache
= (struct inferior_regcache_data
*) inferior_regcache_data (inf
);
48 fatal ("no register cache");
54 registers_length (void)
56 return 2 * register_bytes
;
60 create_register_cache (struct inferior_info
*inferior
)
62 struct inferior_regcache_data
*regcache
;
64 regcache
= malloc (sizeof (*regcache
));
66 regcache
->registers
= malloc (register_bytes
);
67 if (regcache
->registers
== NULL
)
68 fatal ("Could not allocate register cache.");
70 set_inferior_regcache_data (inferior
, regcache
);
74 free_register_cache (struct inferior_info
*inferior
)
76 free (get_regcache (current_inferior
)->registers
);
77 free (get_regcache (current_inferior
));
78 set_inferior_regcache_data (inferior
, NULL
);
82 set_register_cache (struct reg
*regs
, int n
)
90 for (i
= 0; i
< n
; i
++)
92 regs
[i
].offset
= offset
;
93 offset
+= regs
[i
].size
;
96 register_bytes
= offset
/ 8;
100 registers_to_string (char *buf
)
102 char *registers
= get_regcache (current_inferior
)->registers
;
104 convert_int_to_ascii (registers
, buf
, register_bytes
);
108 registers_from_string (char *buf
)
110 int len
= strlen (buf
);
111 char *registers
= get_regcache (current_inferior
)->registers
;
113 if (len
!= register_bytes
* 2)
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;
119 convert_ascii_to_int (buf
, registers
, len
/ 2);
123 find_register_by_name (const char *name
)
127 for (i
= 0; i
< num_registers
; i
++)
128 if (!strcmp (name
, reg_defs
[i
].name
))
130 fatal ("Unknown register %s requested", name
);
135 find_regno (const char *name
)
139 for (i
= 0; i
< num_registers
; i
++)
140 if (!strcmp (name
, reg_defs
[i
].name
))
142 fatal ("Unknown register %s requested", name
);
147 find_register_by_number (int n
)
153 register_size (int n
)
155 return reg_defs
[n
].size
/ 8;
159 register_data (int n
)
161 char *registers
= get_regcache (current_inferior
)->registers
;
163 return registers
+ (reg_defs
[n
].offset
/ 8);
167 supply_register (int n
, const void *buf
)
169 memcpy (register_data (n
), buf
, register_size (n
));
173 supply_register_by_name (const char *name
, const void *buf
)
175 supply_register (find_regno (name
), buf
);
179 collect_register (int n
, void *buf
)
181 memcpy (buf
, register_data (n
), register_size (n
));
185 collect_register_by_name (const char *name
, void *buf
)
187 collect_register (find_regno (name
), buf
);