1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
/* GNU/Linux/AArch64 specific low level interface, for the in-process
agent library for GDB.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "server.h"
#include "tracepoint.h"
/* Defined in auto-generated file aarch64.c. */
void init_registers_aarch64 (void);
extern const struct target_desc *tdesc_aarch64;
/* Each register saved by the jump pad is in a 16 byte cell. */
#define FT_CR_SIZE 16
#define FT_CR_FPCR 0
#define FT_CR_FPSR 1
#define FT_CR_CPSR 2
#define FT_CR_PC 3
#define FT_CR_SP 4
#define FT_CR_X0 5
#define FT_CR_GPR(n) (FT_CR_X0 + (n))
#define FT_CR_FPR(n) (FT_CR_GPR (31) + (n))
/* Mapping between registers collected by the jump pad and GDB's register
array layout used by regcache.
See linux-aarch64-low.c (aarch64_install_fast_tracepoint_jump_pad) for
more details. */
static const int aarch64_ft_collect_regmap[] = {
FT_CR_GPR (0),
FT_CR_GPR (1),
FT_CR_GPR (2),
FT_CR_GPR (3),
FT_CR_GPR (4),
FT_CR_GPR (5),
FT_CR_GPR (6),
FT_CR_GPR (7),
FT_CR_GPR (8),
FT_CR_GPR (9),
FT_CR_GPR (10),
FT_CR_GPR (11),
FT_CR_GPR (12),
FT_CR_GPR (13),
FT_CR_GPR (14),
FT_CR_GPR (15),
FT_CR_GPR (16),
FT_CR_GPR (17),
FT_CR_GPR (18),
FT_CR_GPR (19),
FT_CR_GPR (20),
FT_CR_GPR (21),
FT_CR_GPR (22),
FT_CR_GPR (23),
FT_CR_GPR (24),
FT_CR_GPR (25),
FT_CR_GPR (26),
FT_CR_GPR (27),
FT_CR_GPR (28),
/* FP */
FT_CR_GPR (29),
/* LR */
FT_CR_GPR (30),
FT_CR_SP,
FT_CR_PC,
FT_CR_CPSR,
FT_CR_FPR (0),
FT_CR_FPR (1),
FT_CR_FPR (2),
FT_CR_FPR (3),
FT_CR_FPR (4),
FT_CR_FPR (5),
FT_CR_FPR (6),
FT_CR_FPR (7),
FT_CR_FPR (8),
FT_CR_FPR (9),
FT_CR_FPR (10),
FT_CR_FPR (11),
FT_CR_FPR (12),
FT_CR_FPR (13),
FT_CR_FPR (14),
FT_CR_FPR (15),
FT_CR_FPR (16),
FT_CR_FPR (17),
FT_CR_FPR (18),
FT_CR_FPR (19),
FT_CR_FPR (20),
FT_CR_FPR (21),
FT_CR_FPR (22),
FT_CR_FPR (23),
FT_CR_FPR (24),
FT_CR_FPR (25),
FT_CR_FPR (26),
FT_CR_FPR (27),
FT_CR_FPR (28),
FT_CR_FPR (29),
FT_CR_FPR (30),
FT_CR_FPR (31),
FT_CR_FPSR,
FT_CR_FPCR
};
#define AARCH64_NUM_FT_COLLECT_GREGS \
(sizeof (aarch64_ft_collect_regmap) / sizeof(aarch64_ft_collect_regmap[0]))
/* Fill in REGCACHE with registers saved by the jump pad in BUF. */
void
supply_fast_tracepoint_registers (struct regcache *regcache,
const unsigned char *buf)
{
int i;
for (i = 0; i < AARCH64_NUM_FT_COLLECT_GREGS; i++)
supply_register (regcache, i,
((char *) buf)
+ (aarch64_ft_collect_regmap[i] * FT_CR_SIZE));
}
IP_AGENT_EXPORT_FUNC ULONGEST
gdb_agent_get_raw_reg (const unsigned char *raw_regs, int regnum)
{
if (regnum >= AARCH64_NUM_FT_COLLECT_GREGS)
return 0;
return *(ULONGEST *) (raw_regs
+ aarch64_ft_collect_regmap[regnum] * FT_CR_SIZE);
}
void
initialize_low_tracepoint (void)
{
init_registers_aarch64 ();
ipa_tdesc = tdesc_aarch64;
}
|
