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0d62e5e8 | 1 | /* libthread_db helper functions for the remote server for GDB. |
0b302171 | 2 | Copyright (C) 2002, 2004-2012 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 DJ |
41 | static struct regset_info * |
42 | gregset_info(void) | |
43 | { | |
44 | int i = 0; | |
45 | ||
46 | while (target_regsets[i].size != -1) | |
47 | { | |
48 | if (target_regsets[i].type == GENERAL_REGS) | |
49 | break; | |
50 | i++; | |
51 | } | |
52 | ||
53 | return &target_regsets[i]; | |
54 | } | |
0d62e5e8 DJ |
55 | #endif |
56 | ||
57 | /* Search for the symbol named NAME within the object named OBJ within | |
58 | the target process PH. If the symbol is found the address of the | |
59 | symbol is stored in SYM_ADDR. */ | |
60 | ||
61 | ps_err_e | |
62 | ps_pglobal_lookup (gdb_ps_prochandle_t ph, const char *obj, | |
0050a760 | 63 | const char *name, psaddr_t *sym_addr) |
0d62e5e8 DJ |
64 | { |
65 | CORE_ADDR addr; | |
66 | ||
9836d6ea | 67 | if (thread_db_look_up_one_symbol (name, &addr) == 0) |
0d62e5e8 DJ |
68 | return PS_NOSYM; |
69 | ||
0050a760 | 70 | *sym_addr = (psaddr_t) (unsigned long) addr; |
0d62e5e8 DJ |
71 | return PS_OK; |
72 | } | |
73 | ||
74 | /* Read SIZE bytes from the target process PH at address ADDR and copy | |
75 | them into BUF. */ | |
76 | ||
77 | ps_err_e | |
0050a760 | 78 | ps_pdread (gdb_ps_prochandle_t ph, psaddr_t addr, |
0d62e5e8 DJ |
79 | gdb_ps_read_buf_t buf, gdb_ps_size_t size) |
80 | { | |
0050a760 | 81 | read_inferior_memory ((unsigned long) addr, buf, size); |
0d62e5e8 DJ |
82 | return PS_OK; |
83 | } | |
84 | ||
85 | /* Write SIZE bytes from BUF into the target process PH at address ADDR. */ | |
86 | ||
87 | ps_err_e | |
0050a760 | 88 | ps_pdwrite (gdb_ps_prochandle_t ph, psaddr_t addr, |
0d62e5e8 DJ |
89 | gdb_ps_write_buf_t buf, gdb_ps_size_t size) |
90 | { | |
0050a760 | 91 | return write_inferior_memory ((unsigned long) addr, buf, size); |
0d62e5e8 DJ |
92 | } |
93 | ||
94 | /* Get the general registers of LWP LWPID within the target process PH | |
95 | and store them in GREGSET. */ | |
96 | ||
97 | ps_err_e | |
98 | ps_lgetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, prgregset_t gregset) | |
99 | { | |
fd500816 | 100 | #ifdef HAVE_REGSETS |
54a0b537 | 101 | struct lwp_info *lwp; |
0d62e5e8 | 102 | struct thread_info *reg_inferior, *save_inferior; |
442ea881 | 103 | struct regcache *regcache; |
0d62e5e8 | 104 | |
95954743 | 105 | lwp = find_lwp_pid (pid_to_ptid (lwpid)); |
54a0b537 | 106 | if (lwp == NULL) |
0d62e5e8 DJ |
107 | return PS_ERR; |
108 | ||
54a0b537 | 109 | reg_inferior = get_lwp_thread (lwp); |
0d62e5e8 DJ |
110 | save_inferior = current_inferior; |
111 | current_inferior = reg_inferior; | |
442ea881 | 112 | regcache = get_thread_regcache (current_inferior, 1); |
442ea881 | 113 | gregset_info ()->fill_function (regcache, gregset); |
0d62e5e8 DJ |
114 | |
115 | current_inferior = save_inferior; | |
116 | return PS_OK; | |
fd500816 | 117 | #else |
0d62e5e8 | 118 | return PS_ERR; |
fd500816 | 119 | #endif |
0d62e5e8 DJ |
120 | } |
121 | ||
122 | /* Set the general registers of LWP LWPID within the target process PH | |
123 | from GREGSET. */ | |
124 | ||
125 | ps_err_e | |
126 | ps_lsetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, const prgregset_t gregset) | |
127 | { | |
fd500816 | 128 | /* Unneeded. */ |
0d62e5e8 DJ |
129 | return PS_ERR; |
130 | } | |
131 | ||
132 | /* Get the floating-point registers of LWP LWPID within the target | |
133 | process PH and store them in FPREGSET. */ | |
134 | ||
135 | ps_err_e | |
0050a760 | 136 | ps_lgetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, void *fpregset) |
0d62e5e8 | 137 | { |
fd500816 | 138 | /* Unneeded. */ |
0d62e5e8 DJ |
139 | return PS_ERR; |
140 | } | |
141 | ||
142 | /* Set the floating-point registers of LWP LWPID within the target | |
143 | process PH from FPREGSET. */ | |
144 | ||
145 | ps_err_e | |
0050a760 | 146 | ps_lsetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, void *fpregset) |
0d62e5e8 | 147 | { |
fd500816 | 148 | /* Unneeded. */ |
0d62e5e8 DJ |
149 | return PS_ERR; |
150 | } | |
151 | ||
152 | /* Return overall process id of the target PH. Special for GNU/Linux | |
153 | -- not used on Solaris. */ | |
154 | ||
155 | pid_t | |
156 | ps_getpid (gdb_ps_prochandle_t ph) | |
157 | { | |
95954743 | 158 | return pid_of (get_thread_lwp (current_inferior)); |
0d62e5e8 | 159 | } |