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
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
|
/* <proc_service.h> implementation.
Copyright (C) 1999-2022 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 "defs.h"
#include "gdbcore.h"
#include "inferior.h"
#include "gdbthread.h"
#include "symtab.h"
#include "target.h"
#include "regcache.h"
#include "objfiles.h"
#include "gdb_proc_service.h"
#include <sys/procfs.h>
/* Prototypes for supply_gregset etc. */
#include "gregset.h"
/* Helper functions. */
/* Convert a psaddr_t to a CORE_ADDR. */
static CORE_ADDR
ps_addr_to_core_addr (psaddr_t addr)
{
if (current_program_space->exec_bfd ()
&& bfd_get_sign_extend_vma (current_program_space->exec_bfd ()))
return (intptr_t) addr;
else
return (uintptr_t) addr;
}
/* Convert a CORE_ADDR to a psaddr_t. */
static psaddr_t
core_addr_to_ps_addr (CORE_ADDR addr)
{
if (current_program_space->exec_bfd ()
&& bfd_get_sign_extend_vma (current_program_space->exec_bfd ()))
return (psaddr_t) (intptr_t) addr;
else
return (psaddr_t) (uintptr_t) addr;
}
/* Transfer LEN bytes of memory between BUF and address ADDR in the
process specified by PH. If WRITE, transfer them to the process,
else transfer them from the process. Returns PS_OK for success,
PS_ERR on failure.
This is a helper function for ps_pdread and ps_pdwrite. */
static ps_err_e
ps_xfer_memory (const struct ps_prochandle *ph, psaddr_t addr,
gdb_byte *buf, size_t len, int write)
{
scoped_restore_current_inferior restore_inferior;
set_current_inferior (ph->thread->inf);
scoped_restore_current_program_space restore_current_progspace;
set_current_program_space (ph->thread->inf->pspace);
scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid);
inferior_ptid = ph->thread->ptid;
CORE_ADDR core_addr = ps_addr_to_core_addr (addr);
int ret;
if (write)
ret = target_write_memory (core_addr, buf, len);
else
ret = target_read_memory (core_addr, buf, len);
return (ret == 0 ? PS_OK : PS_ERR);
}
/* Search for the symbol named NAME within the object named OBJ within
the target process PH. If the symbol is found the address of the
symbol is stored in SYM_ADDR. */
ps_err_e
ps_pglobal_lookup (struct ps_prochandle *ph, const char *obj,
const char *name, psaddr_t *sym_addr)
{
inferior *inf = ph->thread->inf;
scoped_restore_current_program_space restore_pspace;
set_current_program_space (inf->pspace);
/* FIXME: kettenis/2000-09-03: What should we do with OBJ? */
bound_minimal_symbol ms = lookup_minimal_symbol (name, NULL, NULL);
if (ms.minsym == NULL)
return PS_NOSYM;
*sym_addr = core_addr_to_ps_addr (ms.value_address ());
return PS_OK;
}
/* Read SIZE bytes from the target process PH at address ADDR and copy
them into BUF. */
ps_err_e
ps_pdread (struct ps_prochandle *ph, psaddr_t addr, void *buf, size_t size)
{
return ps_xfer_memory (ph, addr, (gdb_byte *) buf, size, 0);
}
/* Write SIZE bytes from BUF into the target process PH at address ADDR. */
ps_err_e
ps_pdwrite (struct ps_prochandle *ph, psaddr_t addr,
const void *buf, size_t size)
{
return ps_xfer_memory (ph, addr, (gdb_byte *) buf, size, 1);
}
/* Get a regcache for LWPID using its inferior's "main" architecture,
which is the register set libthread_db expects to be using. In
multi-arch debugging scenarios, the thread's architecture may
differ from the inferior's "main" architecture. */
static struct regcache *
get_ps_regcache (struct ps_prochandle *ph, lwpid_t lwpid)
{
inferior *inf = ph->thread->inf;
return get_thread_arch_regcache (inf->process_target (),
ptid_t (inf->pid, lwpid),
inf->gdbarch);
}
/* Get the general registers of LWP LWPID within the target process PH
and store them in GREGSET. */
ps_err_e
ps_lgetregs (struct ps_prochandle *ph, lwpid_t lwpid, prgregset_t gregset)
{
struct regcache *regcache = get_ps_regcache (ph, lwpid);
target_fetch_registers (regcache, -1);
fill_gregset (regcache, (gdb_gregset_t *) gregset, -1);
return PS_OK;
}
/* Set the general registers of LWP LWPID within the target process PH
from GREGSET. */
ps_err_e
ps_lsetregs (struct ps_prochandle *ph, lwpid_t lwpid, const prgregset_t gregset)
{
struct regcache *regcache = get_ps_regcache (ph, lwpid);
supply_gregset (regcache, (const gdb_gregset_t *) gregset);
target_store_registers (regcache, -1);
return PS_OK;
}
/* Get the floating-point registers of LWP LWPID within the target
process PH and store them in FPREGSET. */
ps_err_e
ps_lgetfpregs (struct ps_prochandle *ph, lwpid_t lwpid,
prfpregset_t *fpregset)
{
struct regcache *regcache = get_ps_regcache (ph, lwpid);
target_fetch_registers (regcache, -1);
fill_fpregset (regcache, (gdb_fpregset_t *) fpregset, -1);
return PS_OK;
}
/* Set the floating-point registers of LWP LWPID within the target
process PH from FPREGSET. */
ps_err_e
ps_lsetfpregs (struct ps_prochandle *ph, lwpid_t lwpid,
const prfpregset_t *fpregset)
{
struct regcache *regcache = get_ps_regcache (ph, lwpid);
supply_fpregset (regcache, (const gdb_fpregset_t *) fpregset);
target_store_registers (regcache, -1);
return PS_OK;
}
/* Return overall process id of the target PH. Special for GNU/Linux
-- not used on Solaris. */
pid_t
ps_getpid (struct ps_prochandle *ph)
{
return ph->thread->ptid.pid ();
}
void _initialize_proc_service ();
void
_initialize_proc_service ()
{
/* This function solely exists to make sure this module is linked
into the final binary. */
}
|
