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58caa3dc | 1 | /* Internal interfaces for the GNU/Linux specific target code for gdbserver. |
0fb0cc75 JB |
2 | Copyright (C) 2002, 2004, 2005, 2007, 2008, 2009 |
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 |
0d62e5e8 DJ |
27 | typedef void (*regset_fill_func) (void *); |
28 | typedef void (*regset_store_func) (const void *); | |
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 | { | |
50 | /* True if this process has loaded thread_db, and it is active. */ | |
51 | int thread_db_active; | |
52 | ||
53 | /* Structure that identifies the child process for the | |
54 | <proc_service.h> interface. */ | |
55 | struct ps_prochandle proc_handle; | |
56 | ||
57 | /* Connection to the libthread_db library. */ | |
58 | td_thragent_t *thread_agent; | |
aa5ca48f DE |
59 | |
60 | /* Arch-specific additions. */ | |
61 | struct arch_process_info *arch_private; | |
95954743 PA |
62 | }; |
63 | ||
aa5ca48f DE |
64 | struct lwp_info; |
65 | ||
2ec06d2e DJ |
66 | struct linux_target_ops |
67 | { | |
d05b4ac3 UW |
68 | /* Architecture-specific setup. */ |
69 | void (*arch_setup) (void); | |
70 | ||
2ec06d2e DJ |
71 | int num_regs; |
72 | int *regmap; | |
73 | int (*cannot_fetch_register) (int); | |
bc1e36ca DJ |
74 | |
75 | /* Returns 0 if we can store the register, 1 if we can not | |
76 | store the register, and 2 if failure to store the register | |
77 | is acceptable. */ | |
2ec06d2e | 78 | int (*cannot_store_register) (int); |
0d62e5e8 | 79 | CORE_ADDR (*get_pc) (void); |
611cb4a5 | 80 | void (*set_pc) (CORE_ADDR newpc); |
f450004a | 81 | const unsigned char *breakpoint; |
611cb4a5 DJ |
82 | int breakpoint_len; |
83 | CORE_ADDR (*breakpoint_reinsert_addr) (void); | |
0d62e5e8 | 84 | |
0d62e5e8 DJ |
85 | int decr_pc_after_break; |
86 | int (*breakpoint_at) (CORE_ADDR pc); | |
e013ee27 | 87 | |
d993e290 PA |
88 | /* Breakpoint and watchpoint related functions. See target.h for |
89 | comments. */ | |
90 | int (*insert_point) (char type, CORE_ADDR addr, int len); | |
91 | int (*remove_point) (char type, CORE_ADDR addr, int len); | |
e013ee27 OF |
92 | int (*stopped_by_watchpoint) (void); |
93 | CORE_ADDR (*stopped_data_address) (void); | |
94 | ||
ee1a7ae4 UW |
95 | /* Hooks to reformat register data for PEEKUSR/POKEUSR (in particular |
96 | for registers smaller than an xfer unit). */ | |
97 | void (*collect_ptrace_register) (int regno, char *buf); | |
98 | void (*supply_ptrace_register) (int regno, const char *buf); | |
d0722149 DE |
99 | |
100 | /* Hook to convert from target format to ptrace format and back. | |
101 | Returns true if any conversion was done; false otherwise. | |
102 | If DIRECTION is 1, then copy from INF to NATIVE. | |
103 | If DIRECTION is 0, copy from NATIVE to INF. */ | |
104 | int (*siginfo_fixup) (struct siginfo *native, void *inf, int direction); | |
aa5ca48f DE |
105 | |
106 | /* Hook to call when a new process is created or attached to. | |
107 | If extra per-process architecture-specific data is needed, | |
108 | allocate it here. */ | |
109 | struct arch_process_info * (*new_process) (void); | |
110 | ||
111 | /* Hook to call when a new thread is detected. | |
112 | If extra per-thread architecture-specific data is needed, | |
113 | allocate it here. */ | |
114 | struct arch_lwp_info * (*new_thread) (void); | |
115 | ||
116 | /* Hook to call prior to resuming a thread. */ | |
117 | void (*prepare_to_resume) (struct lwp_info *); | |
2ec06d2e DJ |
118 | }; |
119 | ||
120 | extern struct linux_target_ops the_low_target; | |
0d62e5e8 | 121 | |
aa5ca48f | 122 | #define ptid_of(proc) ((proc)->head.id) |
95954743 PA |
123 | #define pid_of(proc) ptid_get_pid ((proc)->head.id) |
124 | #define lwpid_of(proc) ptid_get_lwp ((proc)->head.id) | |
bd99dc85 | 125 | |
54a0b537 PA |
126 | #define get_lwp(inf) ((struct lwp_info *)(inf)) |
127 | #define get_thread_lwp(thr) (get_lwp (inferior_target_data (thr))) | |
128 | #define get_lwp_thread(proc) ((struct thread_info *) \ | |
129 | find_inferior_id (&all_threads, \ | |
95954743 | 130 | get_lwp (proc)->head.id)) |
0d62e5e8 | 131 | |
54a0b537 | 132 | struct lwp_info |
0d62e5e8 DJ |
133 | { |
134 | struct inferior_list_entry head; | |
0d62e5e8 | 135 | |
ae13219e DJ |
136 | /* If this flag is set, the next SIGSTOP will be ignored (the |
137 | process will be immediately resumed). This means that either we | |
138 | sent the SIGSTOP to it ourselves and got some other pending event | |
139 | (so the SIGSTOP is still pending), or that we stopped the | |
140 | inferior implicitly via PTRACE_ATTACH and have not waited for it | |
141 | yet. */ | |
0d62e5e8 DJ |
142 | int stop_expected; |
143 | ||
bd99dc85 PA |
144 | /* True if this thread was suspended (with vCont;t). */ |
145 | int suspended; | |
146 | ||
147 | /* If this flag is set, the lwp is known to be stopped right now (stop | |
0d62e5e8 DJ |
148 | event already received in a wait()). */ |
149 | int stopped; | |
150 | ||
95954743 PA |
151 | /* If this flag is set, the lwp is known to be dead already (exit |
152 | event already received in a wait(), and is cached in | |
153 | status_pending). */ | |
154 | int dead; | |
155 | ||
bd99dc85 | 156 | /* When stopped is set, the last wait status recorded for this lwp. */ |
32ca6d61 DJ |
157 | int last_status; |
158 | ||
0d62e5e8 DJ |
159 | /* If this flag is set, STATUS_PENDING is a waitstatus that has not yet |
160 | been reported. */ | |
161 | int status_pending_p; | |
162 | int status_pending; | |
163 | ||
164 | /* If this flag is set, the pending status is a (GDB-placed) breakpoint. */ | |
165 | int pending_is_breakpoint; | |
166 | CORE_ADDR pending_stop_pc; | |
167 | ||
168 | /* If this is non-zero, it is a breakpoint to be reinserted at our next | |
169 | stop (SIGTRAP stops only). */ | |
170 | CORE_ADDR bp_reinsert; | |
171 | ||
172 | /* If this flag is set, the last continue operation on this process | |
173 | was a single-step. */ | |
174 | int stepping; | |
175 | ||
a6dbe5df PA |
176 | /* If this flag is set, we need to set the event request flags the |
177 | next time we see this LWP stop. */ | |
178 | int must_set_ptrace_flags; | |
179 | ||
0d62e5e8 DJ |
180 | /* If this is non-zero, it points to a chain of signals which need to |
181 | be delivered to this process. */ | |
182 | struct pending_signals *pending_signals; | |
5544ad89 DJ |
183 | |
184 | /* A link used when resuming. It is initialized from the resume request, | |
54a0b537 | 185 | and then processed and cleared in linux_resume_one_lwp. */ |
5544ad89 DJ |
186 | |
187 | struct thread_resume *resume; | |
dae5f5cf | 188 | |
24a09b5f | 189 | int thread_known; |
dae5f5cf | 190 | #ifdef HAVE_THREAD_DB_H |
24a09b5f DJ |
191 | /* The thread handle, used for e.g. TLS access. Only valid if |
192 | THREAD_KNOWN is set. */ | |
dae5f5cf DJ |
193 | td_thrhandle_t th; |
194 | #endif | |
aa5ca48f DE |
195 | |
196 | /* Arch-specific additions. */ | |
197 | struct arch_lwp_info *arch_private; | |
0d62e5e8 | 198 | }; |
5544ad89 | 199 | |
54a0b537 | 200 | extern struct inferior_list all_lwps; |
0d62e5e8 | 201 | |
d0722149 DE |
202 | char *linux_child_pid_to_exec_file (int pid); |
203 | int elf_64_file_p (const char *file); | |
204 | ||
24a09b5f | 205 | void linux_attach_lwp (unsigned long pid); |
0d62e5e8 | 206 | |
24a09b5f | 207 | int thread_db_init (int use_events); |
dae5f5cf DJ |
208 | int thread_db_get_tls_address (struct thread_info *thread, CORE_ADDR offset, |
209 | CORE_ADDR load_module, CORE_ADDR *address); | |
95954743 PA |
210 | |
211 | struct lwp_info *find_lwp_pid (ptid_t ptid); |