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
|
/* Copyright (C) 2009-2020 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 "lynx-low.h"
#include <limits.h>
#include <sys/ptrace.h>
/* The following two typedefs are defined in a .h file which is not
in the standard include path (/sys/include/family/ppc/ucontext.h),
so we just duplicate them here. */
/* General register context */
typedef struct usr_econtext_s
{
uint32_t uec_iregs[32];
uint32_t uec_inum;
uint32_t uec_srr0;
uint32_t uec_srr1;
uint32_t uec_lr;
uint32_t uec_ctr;
uint32_t uec_cr;
uint32_t uec_xer;
uint32_t uec_dar;
uint32_t uec_mq;
uint32_t uec_msr;
uint32_t uec_sregs[16];
uint32_t uec_ss_count;
uint32_t uec_ss_addr1;
uint32_t uec_ss_addr2;
uint32_t uec_ss_code1;
uint32_t uec_ss_code2;
} usr_econtext_t;
/* Floating point register context */
typedef struct usr_fcontext_s
{
uint64_t ufc_freg[32];
uint32_t ufc_fpscr[2];
} usr_fcontext_t;
/* Index of for various registers inside the regcache. */
#define R0_REGNUM 0
#define F0_REGNUM 32
#define PC_REGNUM 64
#define MSR_REGNUM 65
#define CR_REGNUM 66
#define LR_REGNUM 67
#define CTR_REGNUM 68
#define XER_REGNUM 69
#define FPSCR_REGNUM 70
/* Defined in auto-generated file powerpc-32.c. */
extern void init_registers_powerpc_32 (void);
extern const struct target_desc *tdesc_powerpc_32;
/* The fill_function for the general-purpose register set. */
static void
lynx_ppc_fill_gregset (struct regcache *regcache, char *buf)
{
int i;
/* r0 - r31 */
for (i = 0; i < 32; i++)
collect_register (regcache, R0_REGNUM + i,
buf + offsetof (usr_econtext_t, uec_iregs[i]));
/* The other registers provided in the GP register context. */
collect_register (regcache, PC_REGNUM,
buf + offsetof (usr_econtext_t, uec_srr0));
collect_register (regcache, MSR_REGNUM,
buf + offsetof (usr_econtext_t, uec_srr1));
collect_register (regcache, CR_REGNUM,
buf + offsetof (usr_econtext_t, uec_cr));
collect_register (regcache, LR_REGNUM,
buf + offsetof (usr_econtext_t, uec_lr));
collect_register (regcache, CTR_REGNUM,
buf + offsetof (usr_econtext_t, uec_ctr));
collect_register (regcache, XER_REGNUM,
buf + offsetof (usr_econtext_t, uec_xer));
}
/* The store_function for the general-purpose register set. */
static void
lynx_ppc_store_gregset (struct regcache *regcache, const char *buf)
{
int i;
/* r0 - r31 */
for (i = 0; i < 32; i++)
supply_register (regcache, R0_REGNUM + i,
buf + offsetof (usr_econtext_t, uec_iregs[i]));
/* The other registers provided in the GP register context. */
supply_register (regcache, PC_REGNUM,
buf + offsetof (usr_econtext_t, uec_srr0));
supply_register (regcache, MSR_REGNUM,
buf + offsetof (usr_econtext_t, uec_srr1));
supply_register (regcache, CR_REGNUM,
buf + offsetof (usr_econtext_t, uec_cr));
supply_register (regcache, LR_REGNUM,
buf + offsetof (usr_econtext_t, uec_lr));
supply_register (regcache, CTR_REGNUM,
buf + offsetof (usr_econtext_t, uec_ctr));
supply_register (regcache, XER_REGNUM,
buf + offsetof (usr_econtext_t, uec_xer));
}
/* The fill_function for the floating-point register set. */
static void
lynx_ppc_fill_fpregset (struct regcache *regcache, char *buf)
{
int i;
/* f0 - f31 */
for (i = 0; i < 32; i++)
collect_register (regcache, F0_REGNUM + i,
buf + offsetof (usr_fcontext_t, ufc_freg[i]));
/* fpscr */
collect_register (regcache, FPSCR_REGNUM,
buf + offsetof (usr_fcontext_t, ufc_fpscr));
}
/* The store_function for the floating-point register set. */
static void
lynx_ppc_store_fpregset (struct regcache *regcache, const char *buf)
{
int i;
/* f0 - f31 */
for (i = 0; i < 32; i++)
supply_register (regcache, F0_REGNUM + i,
buf + offsetof (usr_fcontext_t, ufc_freg[i]));
/* fpscr */
supply_register (regcache, FPSCR_REGNUM,
buf + offsetof (usr_fcontext_t, ufc_fpscr));
}
/* Implements the lynx_target_ops.arch_setup routine. */
static void
lynx_ppc_arch_setup (void)
{
init_registers_powerpc_32 ();
lynx_tdesc = tdesc_powerpc_32;
}
/* Description of all the powerpc-lynx register sets. */
struct lynx_regset_info lynx_target_regsets[] = {
/* General Purpose Registers. */
{PTRACE_GETREGS, PTRACE_SETREGS, sizeof(usr_econtext_t),
lynx_ppc_fill_gregset, lynx_ppc_store_gregset},
/* Floating Point Registers. */
{ PTRACE_GETFPREGS, PTRACE_SETFPREGS, sizeof(usr_fcontext_t),
lynx_ppc_fill_fpregset, lynx_ppc_store_fpregset },
/* End of list marker. */
{0, 0, -1, NULL, NULL }
};
/* The lynx_target_ops vector for powerpc-lynxos. */
struct lynx_target_ops the_low_target = {
lynx_ppc_arch_setup,
};
|
