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58caa3dc | 1 | /* Internal interfaces for the GNU/Linux specific target code for gdbserver. |
4c38e0a4 | 2 | Copyright (C) 2002, 2004, 2005, 2007, 2008, 2009, 2010 |
0fb0cc75 | 3 | Free Software Foundation, Inc. |
58caa3dc DJ |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
58caa3dc DJ |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
58caa3dc | 19 | |
dae5f5cf DJ |
20 | #ifdef HAVE_THREAD_DB_H |
21 | #include <thread_db.h> | |
22 | #endif | |
23 | ||
95954743 PA |
24 | #include "gdb_proc_service.h" |
25 | ||
58caa3dc | 26 | #ifdef HAVE_LINUX_REGSETS |
442ea881 PA |
27 | typedef void (*regset_fill_func) (struct regcache *, void *); |
28 | typedef void (*regset_store_func) (struct regcache *, const void *); | |
0d62e5e8 DJ |
29 | enum regset_type { |
30 | GENERAL_REGS, | |
31 | FP_REGS, | |
32 | EXTENDED_REGS, | |
33 | }; | |
34 | ||
58caa3dc DJ |
35 | struct regset_info |
36 | { | |
37 | int get_request, set_request; | |
38 | int size; | |
0d62e5e8 DJ |
39 | enum regset_type type; |
40 | regset_fill_func fill_function; | |
41 | regset_store_func store_function; | |
58caa3dc DJ |
42 | }; |
43 | extern struct regset_info target_regsets[]; | |
44 | #endif | |
2ec06d2e | 45 | |
d0722149 DE |
46 | struct siginfo; |
47 | ||
95954743 PA |
48 | struct process_info_private |
49 | { | |
aa5ca48f DE |
50 | /* Arch-specific additions. */ |
51 | struct arch_process_info *arch_private; | |
cdbfd419 PP |
52 | |
53 | /* libthread_db-specific additions. Not NULL if this process has loaded | |
54 | thread_db, and it is active. */ | |
55 | struct thread_db *thread_db; | |
95954743 PA |
56 | }; |
57 | ||
aa5ca48f DE |
58 | struct lwp_info; |
59 | ||
2ec06d2e DJ |
60 | struct linux_target_ops |
61 | { | |
d05b4ac3 UW |
62 | /* Architecture-specific setup. */ |
63 | void (*arch_setup) (void); | |
64 | ||
2ec06d2e DJ |
65 | int num_regs; |
66 | int *regmap; | |
67 | int (*cannot_fetch_register) (int); | |
bc1e36ca DJ |
68 | |
69 | /* Returns 0 if we can store the register, 1 if we can not | |
70 | store the register, and 2 if failure to store the register | |
71 | is acceptable. */ | |
2ec06d2e | 72 | int (*cannot_store_register) (int); |
442ea881 PA |
73 | CORE_ADDR (*get_pc) (struct regcache *regcache); |
74 | void (*set_pc) (struct regcache *regcache, CORE_ADDR newpc); | |
f450004a | 75 | const unsigned char *breakpoint; |
611cb4a5 DJ |
76 | int breakpoint_len; |
77 | CORE_ADDR (*breakpoint_reinsert_addr) (void); | |
0d62e5e8 | 78 | |
0d62e5e8 DJ |
79 | int decr_pc_after_break; |
80 | int (*breakpoint_at) (CORE_ADDR pc); | |
e013ee27 | 81 | |
d993e290 PA |
82 | /* Breakpoint and watchpoint related functions. See target.h for |
83 | comments. */ | |
84 | int (*insert_point) (char type, CORE_ADDR addr, int len); | |
85 | int (*remove_point) (char type, CORE_ADDR addr, int len); | |
e013ee27 OF |
86 | int (*stopped_by_watchpoint) (void); |
87 | CORE_ADDR (*stopped_data_address) (void); | |
88 | ||
ee1a7ae4 UW |
89 | /* Hooks to reformat register data for PEEKUSR/POKEUSR (in particular |
90 | for registers smaller than an xfer unit). */ | |
442ea881 PA |
91 | void (*collect_ptrace_register) (struct regcache *regcache, |
92 | int regno, char *buf); | |
93 | void (*supply_ptrace_register) (struct regcache *regcache, | |
94 | int regno, const char *buf); | |
d0722149 DE |
95 | |
96 | /* Hook to convert from target format to ptrace format and back. | |
97 | Returns true if any conversion was done; false otherwise. | |
98 | If DIRECTION is 1, then copy from INF to NATIVE. | |
99 | If DIRECTION is 0, copy from NATIVE to INF. */ | |
100 | int (*siginfo_fixup) (struct siginfo *native, void *inf, int direction); | |
aa5ca48f DE |
101 | |
102 | /* Hook to call when a new process is created or attached to. | |
103 | If extra per-process architecture-specific data is needed, | |
104 | allocate it here. */ | |
105 | struct arch_process_info * (*new_process) (void); | |
106 | ||
107 | /* Hook to call when a new thread is detected. | |
108 | If extra per-thread architecture-specific data is needed, | |
109 | allocate it here. */ | |
110 | struct arch_lwp_info * (*new_thread) (void); | |
111 | ||
112 | /* Hook to call prior to resuming a thread. */ | |
113 | void (*prepare_to_resume) (struct lwp_info *); | |
2ec06d2e DJ |
114 | }; |
115 | ||
116 | extern struct linux_target_ops the_low_target; | |
0d62e5e8 | 117 | |
aa5ca48f | 118 | #define ptid_of(proc) ((proc)->head.id) |
95954743 PA |
119 | #define pid_of(proc) ptid_get_pid ((proc)->head.id) |
120 | #define lwpid_of(proc) ptid_get_lwp ((proc)->head.id) | |
bd99dc85 | 121 | |
54a0b537 PA |
122 | #define get_lwp(inf) ((struct lwp_info *)(inf)) |
123 | #define get_thread_lwp(thr) (get_lwp (inferior_target_data (thr))) | |
124 | #define get_lwp_thread(proc) ((struct thread_info *) \ | |
125 | find_inferior_id (&all_threads, \ | |
95954743 | 126 | get_lwp (proc)->head.id)) |
0d62e5e8 | 127 | |
54a0b537 | 128 | struct lwp_info |
0d62e5e8 DJ |
129 | { |
130 | struct inferior_list_entry head; | |
0d62e5e8 | 131 | |
ae13219e DJ |
132 | /* If this flag is set, the next SIGSTOP will be ignored (the |
133 | process will be immediately resumed). This means that either we | |
134 | sent the SIGSTOP to it ourselves and got some other pending event | |
135 | (so the SIGSTOP is still pending), or that we stopped the | |
136 | inferior implicitly via PTRACE_ATTACH and have not waited for it | |
137 | yet. */ | |
0d62e5e8 DJ |
138 | int stop_expected; |
139 | ||
bd99dc85 PA |
140 | /* True if this thread was suspended (with vCont;t). */ |
141 | int suspended; | |
142 | ||
143 | /* If this flag is set, the lwp is known to be stopped right now (stop | |
0d62e5e8 DJ |
144 | event already received in a wait()). */ |
145 | int stopped; | |
146 | ||
95954743 PA |
147 | /* If this flag is set, the lwp is known to be dead already (exit |
148 | event already received in a wait(), and is cached in | |
149 | status_pending). */ | |
150 | int dead; | |
151 | ||
bd99dc85 | 152 | /* When stopped is set, the last wait status recorded for this lwp. */ |
32ca6d61 DJ |
153 | int last_status; |
154 | ||
0d62e5e8 DJ |
155 | /* If this flag is set, STATUS_PENDING is a waitstatus that has not yet |
156 | been reported. */ | |
157 | int status_pending_p; | |
158 | int status_pending; | |
159 | ||
160 | /* If this flag is set, the pending status is a (GDB-placed) breakpoint. */ | |
161 | int pending_is_breakpoint; | |
162 | CORE_ADDR pending_stop_pc; | |
163 | ||
c3adc08c PA |
164 | /* STOPPED_BY_WATCHPOINT is non-zero if this LWP stopped with a data |
165 | watchpoint trap. */ | |
166 | int stopped_by_watchpoint; | |
167 | ||
168 | /* On architectures where it is possible to know the data address of | |
169 | a triggered watchpoint, STOPPED_DATA_ADDRESS is non-zero, and | |
170 | contains such data address. Only valid if STOPPED_BY_WATCHPOINT | |
171 | is true. */ | |
172 | CORE_ADDR stopped_data_address; | |
173 | ||
0d62e5e8 DJ |
174 | /* If this is non-zero, it is a breakpoint to be reinserted at our next |
175 | stop (SIGTRAP stops only). */ | |
176 | CORE_ADDR bp_reinsert; | |
177 | ||
178 | /* If this flag is set, the last continue operation on this process | |
179 | was a single-step. */ | |
180 | int stepping; | |
181 | ||
a6dbe5df PA |
182 | /* If this flag is set, we need to set the event request flags the |
183 | next time we see this LWP stop. */ | |
184 | int must_set_ptrace_flags; | |
185 | ||
0d62e5e8 DJ |
186 | /* If this is non-zero, it points to a chain of signals which need to |
187 | be delivered to this process. */ | |
188 | struct pending_signals *pending_signals; | |
5544ad89 DJ |
189 | |
190 | /* A link used when resuming. It is initialized from the resume request, | |
54a0b537 | 191 | and then processed and cleared in linux_resume_one_lwp. */ |
5544ad89 DJ |
192 | |
193 | struct thread_resume *resume; | |
dae5f5cf | 194 | |
24a09b5f | 195 | int thread_known; |
dae5f5cf | 196 | #ifdef HAVE_THREAD_DB_H |
24a09b5f DJ |
197 | /* The thread handle, used for e.g. TLS access. Only valid if |
198 | THREAD_KNOWN is set. */ | |
dae5f5cf DJ |
199 | td_thrhandle_t th; |
200 | #endif | |
aa5ca48f DE |
201 | |
202 | /* Arch-specific additions. */ | |
203 | struct arch_lwp_info *arch_private; | |
0d62e5e8 | 204 | }; |
5544ad89 | 205 | |
54a0b537 | 206 | extern struct inferior_list all_lwps; |
0d62e5e8 | 207 | |
d0722149 DE |
208 | char *linux_child_pid_to_exec_file (int pid); |
209 | int elf_64_file_p (const char *file); | |
210 | ||
24a09b5f | 211 | void linux_attach_lwp (unsigned long pid); |
cdbfd419 | 212 | struct lwp_info *find_lwp_pid (ptid_t ptid); |
0d62e5e8 | 213 | |
cdbfd419 | 214 | /* From thread-db.c */ |
24a09b5f | 215 | int thread_db_init (int use_events); |
fd7dd3e6 | 216 | void thread_db_free (struct process_info *, int detaching); |
cdbfd419 | 217 | int thread_db_handle_monitor_command (char *); |
dae5f5cf DJ |
218 | int thread_db_get_tls_address (struct thread_info *thread, CORE_ADDR offset, |
219 | CORE_ADDR load_module, CORE_ADDR *address); |