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0d62e5e8 DJ |
1 | /* libthread_db helper functions for the remote server for GDB. |
2 | Copyright 2002 | |
3 | Free Software Foundation, Inc. | |
4 | ||
5 | Contributed by MontaVista Software. | |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
23 | ||
24 | #include "server.h" | |
25 | ||
26 | /* This file is currently tied to GNU/Linux. It should scale well to | |
27 | another libthread_db implementation, with the approriate gdbserver | |
28 | hooks, but for now this means we can use GNU/Linux's target data. */ | |
29 | ||
30 | #include "linux-low.h" | |
31 | ||
32 | /* Correct for all GNU/Linux targets (for quite some time). */ | |
33 | #define GDB_GREGSET_T elf_gregset_t | |
34 | #define GDB_FPREGSET_T elf_fpregset_t | |
35 | ||
36 | #ifndef HAVE_ELF_FPREGSET_T | |
37 | /* Make sure we have said types. Not all platforms bring in <linux/elf.h> | |
38 | via <sys/procfs.h>. */ | |
39 | #ifdef HAVE_LINUX_ELF_H | |
40 | #include <linux/elf.h> | |
41 | #endif | |
42 | #endif | |
43 | ||
44 | #include "../gdb_proc_service.h" | |
45 | ||
46 | typedef struct ps_prochandle *gdb_ps_prochandle_t; | |
47 | typedef void *gdb_ps_read_buf_t; | |
48 | typedef const void *gdb_ps_write_buf_t; | |
49 | typedef size_t gdb_ps_size_t; | |
50 | ||
51 | /* FIXME redo this right */ | |
52 | #if 0 | |
53 | #ifndef HAVE_LINUX_REGSETS | |
54 | #error HAVE_LINUX_REGSETS required! | |
55 | #else | |
56 | static struct regset_info * | |
57 | gregset_info(void) | |
58 | { | |
59 | int i = 0; | |
60 | ||
61 | while (target_regsets[i].size != -1) | |
62 | { | |
63 | if (target_regsets[i].type == GENERAL_REGS) | |
64 | break; | |
65 | i++; | |
66 | } | |
67 | ||
68 | return &target_regsets[i]; | |
69 | } | |
70 | ||
71 | static struct regset_info * | |
72 | fpregset_info(void) | |
73 | { | |
74 | int i = 0; | |
75 | ||
76 | while (target_regsets[i].size != -1) | |
77 | { | |
78 | if (target_regsets[i].type == FP_REGS) | |
79 | break; | |
80 | i++; | |
81 | } | |
82 | ||
83 | return &target_regsets[i]; | |
84 | } | |
85 | #endif | |
86 | #endif | |
87 | ||
88 | /* Search for the symbol named NAME within the object named OBJ within | |
89 | the target process PH. If the symbol is found the address of the | |
90 | symbol is stored in SYM_ADDR. */ | |
91 | ||
92 | ps_err_e | |
93 | ps_pglobal_lookup (gdb_ps_prochandle_t ph, const char *obj, | |
94 | const char *name, paddr_t *sym_addr) | |
95 | { | |
96 | CORE_ADDR addr; | |
97 | ||
98 | if (look_up_one_symbol (name, &addr) == 0) | |
99 | return PS_NOSYM; | |
100 | ||
101 | *sym_addr = (paddr_t) (unsigned long) addr; | |
102 | return PS_OK; | |
103 | } | |
104 | ||
105 | /* Read SIZE bytes from the target process PH at address ADDR and copy | |
106 | them into BUF. */ | |
107 | ||
108 | ps_err_e | |
109 | ps_pdread (gdb_ps_prochandle_t ph, paddr_t addr, | |
110 | gdb_ps_read_buf_t buf, gdb_ps_size_t size) | |
111 | { | |
112 | read_inferior_memory (addr, buf, size); | |
113 | return PS_OK; | |
114 | } | |
115 | ||
116 | /* Write SIZE bytes from BUF into the target process PH at address ADDR. */ | |
117 | ||
118 | ps_err_e | |
119 | ps_pdwrite (gdb_ps_prochandle_t ph, paddr_t addr, | |
120 | gdb_ps_write_buf_t buf, gdb_ps_size_t size) | |
121 | { | |
122 | return write_inferior_memory (addr, buf, size); | |
123 | } | |
124 | ||
125 | /* Get the general registers of LWP LWPID within the target process PH | |
126 | and store them in GREGSET. */ | |
127 | ||
128 | ps_err_e | |
129 | ps_lgetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, prgregset_t gregset) | |
130 | { | |
131 | #if 0 | |
132 | struct thread_info *reg_inferior, *save_inferior; | |
133 | void *regcache; | |
134 | ||
135 | reg_inferior = (struct thread_info *) find_inferior_id (&all_threads, | |
136 | lwpid); | |
137 | if (reg_inferior == NULL) | |
138 | return PS_ERR; | |
139 | ||
140 | save_inferior = current_inferior; | |
141 | current_inferior = reg_inferior; | |
142 | ||
143 | regcache = new_register_cache (); | |
144 | the_target->fetch_registers (0, regcache); | |
145 | gregset_info()->fill_function (gregset, regcache); | |
146 | free_register_cache (regcache); | |
147 | ||
148 | current_inferior = save_inferior; | |
149 | return PS_OK; | |
150 | #endif | |
151 | /* FIXME */ | |
152 | return PS_ERR; | |
153 | } | |
154 | ||
155 | /* Set the general registers of LWP LWPID within the target process PH | |
156 | from GREGSET. */ | |
157 | ||
158 | ps_err_e | |
159 | ps_lsetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, const prgregset_t gregset) | |
160 | { | |
161 | #if 0 | |
162 | struct thread_info *reg_inferior, *save_inferior; | |
163 | void *regcache; | |
164 | ||
165 | reg_inferior = (struct thread_info *) find_inferior_id (&all_threads, lwpid); | |
166 | if (reg_inferior == NULL) | |
167 | return PS_ERR; | |
168 | ||
169 | save_inferior = current_inferior; | |
170 | current_inferior = reg_inferior; | |
171 | ||
172 | regcache = new_register_cache (); | |
173 | gregset_info()->store_function (gregset, regcache); | |
174 | the_target->store_registers (0, regcache); | |
175 | free_register_cache (regcache); | |
176 | ||
177 | current_inferior = save_inferior; | |
178 | ||
179 | return PS_OK; | |
180 | #endif | |
181 | /* FIXME */ | |
182 | return PS_ERR; | |
183 | } | |
184 | ||
185 | /* Get the floating-point registers of LWP LWPID within the target | |
186 | process PH and store them in FPREGSET. */ | |
187 | ||
188 | ps_err_e | |
189 | ps_lgetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
190 | gdb_prfpregset_t *fpregset) | |
191 | { | |
192 | #if 0 | |
193 | struct thread_info *reg_inferior, *save_inferior; | |
194 | void *regcache; | |
195 | ||
196 | reg_inferior = (struct thread_info *) find_inferior_id (&all_threads, lwpid); | |
197 | if (reg_inferior == NULL) | |
198 | return PS_ERR; | |
199 | ||
200 | save_inferior = current_inferior; | |
201 | current_inferior = reg_inferior; | |
202 | ||
203 | regcache = new_register_cache (); | |
204 | the_target->fetch_registers (0, regcache); | |
205 | fpregset_info()->fill_function (fpregset, regcache); | |
206 | free_register_cache (regcache); | |
207 | ||
208 | current_inferior = save_inferior; | |
209 | ||
210 | return PS_OK; | |
211 | #endif | |
212 | /* FIXME */ | |
213 | return PS_ERR; | |
214 | } | |
215 | ||
216 | /* Set the floating-point registers of LWP LWPID within the target | |
217 | process PH from FPREGSET. */ | |
218 | ||
219 | ps_err_e | |
220 | ps_lsetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
221 | const gdb_prfpregset_t *fpregset) | |
222 | { | |
223 | #if 0 | |
224 | struct thread_info *reg_inferior, *save_inferior; | |
225 | void *regcache; | |
226 | ||
227 | reg_inferior = (struct thread_info *) find_inferior_id (&all_threads, lwpid); | |
228 | if (reg_inferior == NULL) | |
229 | return PS_ERR; | |
230 | ||
231 | save_inferior = current_inferior; | |
232 | current_inferior = reg_inferior; | |
233 | ||
234 | regcache = new_register_cache (); | |
235 | fpregset_info()->store_function (fpregset, regcache); | |
236 | the_target->store_registers (0, regcache); | |
237 | free_register_cache (regcache); | |
238 | ||
239 | current_inferior = save_inferior; | |
240 | ||
241 | return PS_OK; | |
242 | #endif | |
243 | /* FIXME */ | |
244 | return PS_ERR; | |
245 | } | |
246 | ||
247 | /* Return overall process id of the target PH. Special for GNU/Linux | |
248 | -- not used on Solaris. */ | |
249 | ||
250 | pid_t | |
251 | ps_getpid (gdb_ps_prochandle_t ph) | |
252 | { | |
253 | return ph->pid; | |
254 | } | |
255 | ||
256 |