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
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
|
/* Common target dependent code for GDB on AArch64 systems.
Copyright (C) 2009-2023 Free Software Foundation, Inc.
Contributed by ARM Ltd.
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/>. */
#ifndef AARCH64_TDEP_H
#define AARCH64_TDEP_H
#include "arch/aarch64.h"
#include "displaced-stepping.h"
#include "infrun.h"
#include "gdbarch.h"
/* Forward declarations. */
struct gdbarch;
struct regset;
/* AArch64 Dwarf register numbering. */
#define AARCH64_DWARF_X0 0
#define AARCH64_DWARF_SP 31
#define AARCH64_DWARF_PC 32
#define AARCH64_DWARF_RA_SIGN_STATE 34
#define AARCH64_DWARF_V0 64
#define AARCH64_DWARF_SVE_VG 46
#define AARCH64_DWARF_SVE_FFR 47
#define AARCH64_DWARF_SVE_P0 48
#define AARCH64_DWARF_SVE_Z0 96
/* Size of integer registers. */
#define X_REGISTER_SIZE 8
#define B_REGISTER_SIZE 1
#define H_REGISTER_SIZE 2
#define S_REGISTER_SIZE 4
#define D_REGISTER_SIZE 8
#define Q_REGISTER_SIZE 16
/* Total number of general (X) registers. */
#define AARCH64_X_REGISTER_COUNT 32
/* Total number of D registers. */
#define AARCH64_D_REGISTER_COUNT 32
/* The maximum number of modified instructions generated for one
single-stepped instruction. */
#define AARCH64_DISPLACED_MODIFIED_INSNS 1
/* Target-dependent structure in gdbarch. */
struct aarch64_gdbarch_tdep : gdbarch_tdep_base
{
/* Lowest address at which instructions will appear. */
CORE_ADDR lowest_pc = 0;
/* Offset to PC value in jump buffer. If this is negative, longjmp
support will be disabled. */
int jb_pc = 0;
/* And the size of each entry in the buf. */
size_t jb_elt_size = 0;
/* Types for AdvSISD registers. */
struct type *vnq_type = nullptr;
struct type *vnd_type = nullptr;
struct type *vns_type = nullptr;
struct type *vnh_type = nullptr;
struct type *vnb_type = nullptr;
struct type *vnv_type = nullptr;
/* Types for SME ZA tiles and tile slices pseudo-registers. */
struct type *sme_tile_type_q = nullptr;
struct type *sme_tile_type_d = nullptr;
struct type *sme_tile_type_s = nullptr;
struct type *sme_tile_type_h = nullptr;
struct type *sme_tile_type_b = nullptr;
struct type *sme_tile_slice_type_q = nullptr;
struct type *sme_tile_slice_type_d = nullptr;
struct type *sme_tile_slice_type_s = nullptr;
struct type *sme_tile_slice_type_h = nullptr;
struct type *sme_tile_slice_type_b = nullptr;
/* Vector of names for SME pseudo-registers. The number of elements is
different for each distinct svl value. */
std::vector<std::string> sme_pseudo_names;
/* syscall record. */
int (*aarch64_syscall_record) (struct regcache *regcache,
unsigned long svc_number) = nullptr;
/* The VQ value for SVE targets, or zero if SVE is not supported. */
uint64_t vq = 0;
/* Returns true if the target supports SVE. */
bool has_sve () const
{
return vq != 0;
}
int pauth_reg_base = 0;
/* Number of pauth masks. */
int pauth_reg_count = 0;
int ra_sign_state_regnum = 0;
/* Returns true if the target supports pauth. */
bool has_pauth () const
{
return pauth_reg_base != -1;
}
/* First MTE register. This is -1 if no MTE registers are available. */
int mte_reg_base = 0;
/* Returns true if the target supports MTE. */
bool has_mte () const
{
return mte_reg_base != -1;
}
/* TLS registers. This is -1 if the TLS registers are not available. */
int tls_regnum_base = 0;
int tls_register_count = 0;
bool has_tls() const
{
return tls_regnum_base != -1;
}
/* The W pseudo-registers. */
int w_pseudo_base = 0;
int w_pseudo_count = 0;
/* SME feature fields. */
/* Index of the first SME register. This is -1 if SME is not supported. */
int sme_reg_base = 0;
/* svg register index. */
int sme_svg_regnum = 0;
/* svcr register index. */
int sme_svcr_regnum = 0;
/* ZA register index. */
int sme_za_regnum = 0;
/* Index of the first SME pseudo-register. This is -1 if SME is not
supported. */
int sme_pseudo_base = 0;
/* Total number of SME pseudo-registers. */
int sme_pseudo_count = 0;
/* First tile slice pseudo-register index. */
int sme_tile_slice_pseudo_base = 0;
/* Total number of tile slice pseudo-registers. */
int sme_tile_slice_pseudo_count = 0;
/* First tile pseudo-register index. */
int sme_tile_pseudo_base = 0;
/* The streaming vector quotient (svq) for SME, or zero if SME is not
supported. */
size_t sme_svq = 0;
/* Return true if the target supports SME, and false otherwise. */
bool has_sme () const
{
return sme_svq != 0;
}
/* Index of the SME2 ZT0 register. This is -1 if SME2 is not
supported. */
int sme2_zt0_regnum = -1;
/* Return true if the target supports SME2, and false otherwise. */
bool has_sme2 () const
{
return sme2_zt0_regnum > 0;
}
};
const target_desc *aarch64_read_description (const aarch64_features &features);
aarch64_features
aarch64_features_from_target_desc (const struct target_desc *tdesc);
extern int aarch64_process_record (struct gdbarch *gdbarch,
struct regcache *regcache, CORE_ADDR addr);
displaced_step_copy_insn_closure_up
aarch64_displaced_step_copy_insn (struct gdbarch *gdbarch,
CORE_ADDR from, CORE_ADDR to,
struct regcache *regs);
void aarch64_displaced_step_fixup (struct gdbarch *gdbarch,
displaced_step_copy_insn_closure *dsc,
CORE_ADDR from, CORE_ADDR to,
struct regcache *regs, bool completed_p);
bool aarch64_displaced_step_hw_singlestep (struct gdbarch *gdbarch);
#endif /* aarch64-tdep.h */
|
