Commit | Line | Data |
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0d62e5e8 | 1 | /* libthread_db helper functions for the remote server for GDB. |
61baf725 | 2 | Copyright (C) 2002-2017 Free Software Foundation, Inc. |
0d62e5e8 DJ |
3 | |
4 | Contributed by MontaVista Software. | |
5 | ||
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
0d62e5e8 DJ |
11 | (at your option) any later version. |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
0d62e5e8 DJ |
20 | |
21 | #include "server.h" | |
22 | ||
23 | /* This file is currently tied to GNU/Linux. It should scale well to | |
24 | another libthread_db implementation, with the approriate gdbserver | |
25 | hooks, but for now this means we can use GNU/Linux's target data. */ | |
26 | ||
27 | #include "linux-low.h" | |
28 | ||
0050a760 | 29 | #include "gdb_proc_service.h" |
0d62e5e8 DJ |
30 | |
31 | typedef struct ps_prochandle *gdb_ps_prochandle_t; | |
32 | typedef void *gdb_ps_read_buf_t; | |
33 | typedef const void *gdb_ps_write_buf_t; | |
34 | typedef size_t gdb_ps_size_t; | |
35 | ||
fd500816 DJ |
36 | #ifdef HAVE_LINUX_REGSETS |
37 | #define HAVE_REGSETS | |
38 | #endif | |
39 | ||
40 | #ifdef HAVE_REGSETS | |
0d62e5e8 | 41 | static struct regset_info * |
3aee8918 | 42 | gregset_info (void) |
0d62e5e8 DJ |
43 | { |
44 | int i = 0; | |
3aee8918 PA |
45 | const struct regs_info *regs_info = (*the_low_target.regs_info) (); |
46 | struct regsets_info *regsets_info = regs_info->regsets_info; | |
0d62e5e8 | 47 | |
3aee8918 | 48 | while (regsets_info->regsets[i].size != -1) |
0d62e5e8 | 49 | { |
3aee8918 | 50 | if (regsets_info->regsets[i].type == GENERAL_REGS) |
0d62e5e8 DJ |
51 | break; |
52 | i++; | |
53 | } | |
54 | ||
3aee8918 | 55 | return ®sets_info->regsets[i]; |
0d62e5e8 | 56 | } |
0d62e5e8 DJ |
57 | #endif |
58 | ||
59 | /* Search for the symbol named NAME within the object named OBJ within | |
60 | the target process PH. If the symbol is found the address of the | |
61 | symbol is stored in SYM_ADDR. */ | |
62 | ||
63 | ps_err_e | |
64 | ps_pglobal_lookup (gdb_ps_prochandle_t ph, const char *obj, | |
0050a760 | 65 | const char *name, psaddr_t *sym_addr) |
0d62e5e8 DJ |
66 | { |
67 | CORE_ADDR addr; | |
68 | ||
9836d6ea | 69 | if (thread_db_look_up_one_symbol (name, &addr) == 0) |
0d62e5e8 DJ |
70 | return PS_NOSYM; |
71 | ||
0050a760 | 72 | *sym_addr = (psaddr_t) (unsigned long) addr; |
0d62e5e8 DJ |
73 | return PS_OK; |
74 | } | |
75 | ||
76 | /* Read SIZE bytes from the target process PH at address ADDR and copy | |
77 | them into BUF. */ | |
78 | ||
79 | ps_err_e | |
0050a760 | 80 | ps_pdread (gdb_ps_prochandle_t ph, psaddr_t addr, |
0d62e5e8 DJ |
81 | gdb_ps_read_buf_t buf, gdb_ps_size_t size) |
82 | { | |
5b9ca4d4 PA |
83 | if (read_inferior_memory ((uintptr_t) addr, (gdb_byte *) buf, size) != 0) |
84 | return PS_ERR; | |
0d62e5e8 DJ |
85 | return PS_OK; |
86 | } | |
87 | ||
88 | /* Write SIZE bytes from BUF into the target process PH at address ADDR. */ | |
89 | ||
90 | ps_err_e | |
0050a760 | 91 | ps_pdwrite (gdb_ps_prochandle_t ph, psaddr_t addr, |
0d62e5e8 DJ |
92 | gdb_ps_write_buf_t buf, gdb_ps_size_t size) |
93 | { | |
7ea45d72 | 94 | if (write_inferior_memory ((uintptr_t) addr, (const gdb_byte *) buf, size) |
b42945fd | 95 | != 0) |
ab290430 PA |
96 | return PS_ERR; |
97 | return PS_OK; | |
0d62e5e8 DJ |
98 | } |
99 | ||
100 | /* Get the general registers of LWP LWPID within the target process PH | |
101 | and store them in GREGSET. */ | |
102 | ||
103 | ps_err_e | |
104 | ps_lgetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, prgregset_t gregset) | |
105 | { | |
fd500816 | 106 | #ifdef HAVE_REGSETS |
54a0b537 | 107 | struct lwp_info *lwp; |
0bfdf32f | 108 | struct thread_info *reg_thread, *saved_thread; |
442ea881 | 109 | struct regcache *regcache; |
0d62e5e8 | 110 | |
95954743 | 111 | lwp = find_lwp_pid (pid_to_ptid (lwpid)); |
54a0b537 | 112 | if (lwp == NULL) |
0d62e5e8 DJ |
113 | return PS_ERR; |
114 | ||
0bfdf32f GB |
115 | reg_thread = get_lwp_thread (lwp); |
116 | saved_thread = current_thread; | |
117 | current_thread = reg_thread; | |
118 | regcache = get_thread_regcache (current_thread, 1); | |
442ea881 | 119 | gregset_info ()->fill_function (regcache, gregset); |
0d62e5e8 | 120 | |
0bfdf32f | 121 | current_thread = saved_thread; |
0d62e5e8 | 122 | return PS_OK; |
fd500816 | 123 | #else |
0d62e5e8 | 124 | return PS_ERR; |
fd500816 | 125 | #endif |
0d62e5e8 DJ |
126 | } |
127 | ||
128 | /* Set the general registers of LWP LWPID within the target process PH | |
129 | from GREGSET. */ | |
130 | ||
131 | ps_err_e | |
132 | ps_lsetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, const prgregset_t gregset) | |
133 | { | |
fd500816 | 134 | /* Unneeded. */ |
0d62e5e8 DJ |
135 | return PS_ERR; |
136 | } | |
137 | ||
138 | /* Get the floating-point registers of LWP LWPID within the target | |
139 | process PH and store them in FPREGSET. */ | |
140 | ||
141 | ps_err_e | |
749bab01 | 142 | ps_lgetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, prfpregset_t *fpregset) |
0d62e5e8 | 143 | { |
fd500816 | 144 | /* Unneeded. */ |
0d62e5e8 DJ |
145 | return PS_ERR; |
146 | } | |
147 | ||
148 | /* Set the floating-point registers of LWP LWPID within the target | |
149 | process PH from FPREGSET. */ | |
150 | ||
151 | ps_err_e | |
749bab01 | 152 | ps_lsetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, const prfpregset_t *fpregset) |
0d62e5e8 | 153 | { |
fd500816 | 154 | /* Unneeded. */ |
0d62e5e8 DJ |
155 | return PS_ERR; |
156 | } | |
157 | ||
158 | /* Return overall process id of the target PH. Special for GNU/Linux | |
159 | -- not used on Solaris. */ | |
160 | ||
161 | pid_t | |
162 | ps_getpid (gdb_ps_prochandle_t ph) | |
163 | { | |
0bfdf32f | 164 | return pid_of (current_thread); |
0d62e5e8 | 165 | } |