Support software single step on ARM in GDBServer
[deliverable/binutils-gdb.git] / gdb / gdbserver / linux-aarch32-low.h
1 /* Copyright (C) 1995-2015 Free Software Foundation, Inc.
2
3 This file is part of GDB.
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17
18 /* Correct in either endianness. */
19 #define arm_abi_breakpoint 0xef9f0001UL
20
21 /* For new EABI binaries. We recognize it regardless of which ABI
22 is used for gdbserver, so single threaded debugging should work
23 OK, but for multi-threaded debugging we only insert the current
24 ABI's breakpoint instruction. For now at least. */
25 #define arm_eabi_breakpoint 0xe7f001f0UL
26
27 #ifndef __ARM_EABI__
28 static const unsigned long arm_breakpoint = arm_abi_breakpoint;
29 #else
30 static const unsigned long arm_breakpoint = arm_eabi_breakpoint;
31 #endif
32
33 #define arm_breakpoint_len 4
34 static const unsigned short thumb_breakpoint = 0xde01;
35 #define thumb_breakpoint_len 2
36 static const unsigned short thumb2_breakpoint[] = { 0xf7f0, 0xa000 };
37 #define thumb2_breakpoint_len 4
38
39 extern struct regs_info regs_info_aarch32;
40
41 void arm_fill_gregset (struct regcache *regcache, void *buf);
42 void arm_store_gregset (struct regcache *regcache, const void *buf);
43 void arm_fill_vfpregset_num (struct regcache *regcache, void *buf, int num);
44 void arm_store_vfpregset_num (struct regcache *regcache, const void *buf,
45 int num);
46
47 int arm_breakpoint_kind_from_pc (CORE_ADDR *pcptr);
48 const gdb_byte *arm_sw_breakpoint_from_kind (int kind , int *size);
49 int arm_breakpoint_kind_from_current_state (CORE_ADDR *pcptr);
50 int arm_breakpoint_at (CORE_ADDR where);
51
52 void initialize_low_arch_aarch32 (void);
53
54 void init_registers_arm_with_neon (void);
55 int arm_is_thumb_mode (void);
56
57 extern const struct target_desc *tdesc_arm_with_neon;
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