Commit | Line | Data |
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0d62e5e8 | 1 | /* libthread_db helper functions for the remote server for GDB. |
ecd75fc8 | 2 | Copyright (C) 2002-2014 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 | { | |
0050a760 | 83 | read_inferior_memory ((unsigned long) addr, buf, size); |
0d62e5e8 DJ |
84 | return PS_OK; |
85 | } | |
86 | ||
87 | /* Write SIZE bytes from BUF into the target process PH at address ADDR. */ | |
88 | ||
89 | ps_err_e | |
0050a760 | 90 | ps_pdwrite (gdb_ps_prochandle_t ph, psaddr_t addr, |
0d62e5e8 DJ |
91 | gdb_ps_write_buf_t buf, gdb_ps_size_t size) |
92 | { | |
0050a760 | 93 | return write_inferior_memory ((unsigned long) addr, buf, size); |
0d62e5e8 DJ |
94 | } |
95 | ||
96 | /* Get the general registers of LWP LWPID within the target process PH | |
97 | and store them in GREGSET. */ | |
98 | ||
99 | ps_err_e | |
100 | ps_lgetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, prgregset_t gregset) | |
101 | { | |
fd500816 | 102 | #ifdef HAVE_REGSETS |
54a0b537 | 103 | struct lwp_info *lwp; |
0d62e5e8 | 104 | struct thread_info *reg_inferior, *save_inferior; |
442ea881 | 105 | struct regcache *regcache; |
0d62e5e8 | 106 | |
95954743 | 107 | lwp = find_lwp_pid (pid_to_ptid (lwpid)); |
54a0b537 | 108 | if (lwp == NULL) |
0d62e5e8 DJ |
109 | return PS_ERR; |
110 | ||
54a0b537 | 111 | reg_inferior = get_lwp_thread (lwp); |
0d62e5e8 DJ |
112 | save_inferior = current_inferior; |
113 | current_inferior = reg_inferior; | |
442ea881 | 114 | regcache = get_thread_regcache (current_inferior, 1); |
442ea881 | 115 | gregset_info ()->fill_function (regcache, gregset); |
0d62e5e8 DJ |
116 | |
117 | current_inferior = save_inferior; | |
118 | return PS_OK; | |
fd500816 | 119 | #else |
0d62e5e8 | 120 | return PS_ERR; |
fd500816 | 121 | #endif |
0d62e5e8 DJ |
122 | } |
123 | ||
124 | /* Set the general registers of LWP LWPID within the target process PH | |
125 | from GREGSET. */ | |
126 | ||
127 | ps_err_e | |
128 | ps_lsetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, const prgregset_t gregset) | |
129 | { | |
fd500816 | 130 | /* Unneeded. */ |
0d62e5e8 DJ |
131 | return PS_ERR; |
132 | } | |
133 | ||
134 | /* Get the floating-point registers of LWP LWPID within the target | |
135 | process PH and store them in FPREGSET. */ | |
136 | ||
137 | ps_err_e | |
0050a760 | 138 | ps_lgetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, void *fpregset) |
0d62e5e8 | 139 | { |
fd500816 | 140 | /* Unneeded. */ |
0d62e5e8 DJ |
141 | return PS_ERR; |
142 | } | |
143 | ||
144 | /* Set the floating-point registers of LWP LWPID within the target | |
145 | process PH from FPREGSET. */ | |
146 | ||
147 | ps_err_e | |
0050a760 | 148 | ps_lsetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, void *fpregset) |
0d62e5e8 | 149 | { |
fd500816 | 150 | /* Unneeded. */ |
0d62e5e8 DJ |
151 | return PS_ERR; |
152 | } | |
153 | ||
154 | /* Return overall process id of the target PH. Special for GNU/Linux | |
155 | -- not used on Solaris. */ | |
156 | ||
157 | pid_t | |
158 | ps_getpid (gdb_ps_prochandle_t ph) | |
159 | { | |
95954743 | 160 | return pid_of (get_thread_lwp (current_inferior)); |
0d62e5e8 | 161 | } |