1 /* GNU/Linux/ARM specific low level interface, for the remote server for GDB.
2 Copyright 1995, 1996, 1998, 1999, 2000, 2001, 2002
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. */
23 #include "linux-low.h"
29 #define arm_num_regs 26
31 static int arm_regmap
[] = {
32 0, 4, 8, 12, 16, 20, 24, 28,
33 32, 36, 40, 44, 48, 52, 56, 60,
34 -1, -1, -1, -1, -1, -1, -1, -1, -1,
39 arm_cannot_store_register (int regno
)
41 return (regno
>= arm_num_regs
);
45 arm_cannot_fetch_register (int regno
)
47 return (regno
>= arm_num_regs
);
54 collect_register_by_name ("pc", &pc
);
59 arm_set_pc (CORE_ADDR pc
)
61 unsigned long newpc
= pc
;
62 supply_register_by_name ("pc", &newpc
);
65 /* Correct in either endianness. We do not support Thumb yet. */
66 static const unsigned long arm_breakpoint
= 0xef9f0001;
67 #define arm_breakpoint_len 4
70 arm_breakpoint_at (CORE_ADDR where
)
74 (*the_target
->read_memory
) (where
, (char *) &insn
, 4);
75 if (insn
== arm_breakpoint
)
78 /* If necessary, recognize more trap instructions here. GDB only uses the
83 /* We only place breakpoints in empty marker functions, and thread locking
84 is outside of the function. So rather than importing software single-step,
85 we can just run until exit. */
90 collect_register_by_name ("lr", &pc
);
94 struct linux_target_ops the_low_target
= {
97 arm_cannot_fetch_register
,
98 arm_cannot_store_register
,
101 (const char *) &arm_breakpoint
,