Commit | Line | Data |
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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; | |
59 | }; | |
60 | ||
2ec06d2e DJ |
61 | struct linux_target_ops |
62 | { | |
d05b4ac3 UW |
63 | /* Architecture-specific setup. */ |
64 | void (*arch_setup) (void); | |
65 | ||
2ec06d2e DJ |
66 | int num_regs; |
67 | int *regmap; | |
68 | int (*cannot_fetch_register) (int); | |
bc1e36ca DJ |
69 | |
70 | /* Returns 0 if we can store the register, 1 if we can not | |
71 | store the register, and 2 if failure to store the register | |
72 | is acceptable. */ | |
2ec06d2e | 73 | int (*cannot_store_register) (int); |
0d62e5e8 | 74 | CORE_ADDR (*get_pc) (void); |
611cb4a5 | 75 | void (*set_pc) (CORE_ADDR newpc); |
f450004a | 76 | const unsigned char *breakpoint; |
611cb4a5 DJ |
77 | int breakpoint_len; |
78 | CORE_ADDR (*breakpoint_reinsert_addr) (void); | |
0d62e5e8 | 79 | |
0d62e5e8 DJ |
80 | int decr_pc_after_break; |
81 | int (*breakpoint_at) (CORE_ADDR pc); | |
e013ee27 OF |
82 | |
83 | /* Watchpoint related functions. See target.h for comments. */ | |
84 | int (*insert_watchpoint) (char type, CORE_ADDR addr, int len); | |
85 | int (*remove_watchpoint) (char type, CORE_ADDR addr, int len); | |
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). */ | |
91 | void (*collect_ptrace_register) (int regno, char *buf); | |
92 | void (*supply_ptrace_register) (int regno, const char *buf); | |
d0722149 DE |
93 | |
94 | /* Hook to convert from target format to ptrace format and back. | |
95 | Returns true if any conversion was done; false otherwise. | |
96 | If DIRECTION is 1, then copy from INF to NATIVE. | |
97 | If DIRECTION is 0, copy from NATIVE to INF. */ | |
98 | int (*siginfo_fixup) (struct siginfo *native, void *inf, int direction); | |
2ec06d2e DJ |
99 | }; |
100 | ||
101 | extern struct linux_target_ops the_low_target; | |
0d62e5e8 | 102 | |
95954743 PA |
103 | #define pid_of(proc) ptid_get_pid ((proc)->head.id) |
104 | #define lwpid_of(proc) ptid_get_lwp ((proc)->head.id) | |
bd99dc85 | 105 | |
54a0b537 PA |
106 | #define get_lwp(inf) ((struct lwp_info *)(inf)) |
107 | #define get_thread_lwp(thr) (get_lwp (inferior_target_data (thr))) | |
108 | #define get_lwp_thread(proc) ((struct thread_info *) \ | |
109 | find_inferior_id (&all_threads, \ | |
95954743 | 110 | get_lwp (proc)->head.id)) |
0d62e5e8 | 111 | |
54a0b537 | 112 | struct lwp_info |
0d62e5e8 DJ |
113 | { |
114 | struct inferior_list_entry head; | |
0d62e5e8 | 115 | |
ae13219e DJ |
116 | /* If this flag is set, the next SIGSTOP will be ignored (the |
117 | process will be immediately resumed). This means that either we | |
118 | sent the SIGSTOP to it ourselves and got some other pending event | |
119 | (so the SIGSTOP is still pending), or that we stopped the | |
120 | inferior implicitly via PTRACE_ATTACH and have not waited for it | |
121 | yet. */ | |
0d62e5e8 DJ |
122 | int stop_expected; |
123 | ||
bd99dc85 PA |
124 | /* True if this thread was suspended (with vCont;t). */ |
125 | int suspended; | |
126 | ||
127 | /* If this flag is set, the lwp is known to be stopped right now (stop | |
0d62e5e8 DJ |
128 | event already received in a wait()). */ |
129 | int stopped; | |
130 | ||
95954743 PA |
131 | /* If this flag is set, the lwp is known to be dead already (exit |
132 | event already received in a wait(), and is cached in | |
133 | status_pending). */ | |
134 | int dead; | |
135 | ||
bd99dc85 | 136 | /* When stopped is set, the last wait status recorded for this lwp. */ |
32ca6d61 DJ |
137 | int last_status; |
138 | ||
0d62e5e8 DJ |
139 | /* If this flag is set, STATUS_PENDING is a waitstatus that has not yet |
140 | been reported. */ | |
141 | int status_pending_p; | |
142 | int status_pending; | |
143 | ||
144 | /* If this flag is set, the pending status is a (GDB-placed) breakpoint. */ | |
145 | int pending_is_breakpoint; | |
146 | CORE_ADDR pending_stop_pc; | |
147 | ||
148 | /* If this is non-zero, it is a breakpoint to be reinserted at our next | |
149 | stop (SIGTRAP stops only). */ | |
150 | CORE_ADDR bp_reinsert; | |
151 | ||
152 | /* If this flag is set, the last continue operation on this process | |
153 | was a single-step. */ | |
154 | int stepping; | |
155 | ||
a6dbe5df PA |
156 | /* If this flag is set, we need to set the event request flags the |
157 | next time we see this LWP stop. */ | |
158 | int must_set_ptrace_flags; | |
159 | ||
0d62e5e8 DJ |
160 | /* If this is non-zero, it points to a chain of signals which need to |
161 | be delivered to this process. */ | |
162 | struct pending_signals *pending_signals; | |
5544ad89 DJ |
163 | |
164 | /* A link used when resuming. It is initialized from the resume request, | |
54a0b537 | 165 | and then processed and cleared in linux_resume_one_lwp. */ |
5544ad89 DJ |
166 | |
167 | struct thread_resume *resume; | |
dae5f5cf | 168 | |
24a09b5f | 169 | int thread_known; |
dae5f5cf | 170 | #ifdef HAVE_THREAD_DB_H |
24a09b5f DJ |
171 | /* The thread handle, used for e.g. TLS access. Only valid if |
172 | THREAD_KNOWN is set. */ | |
dae5f5cf DJ |
173 | td_thrhandle_t th; |
174 | #endif | |
0d62e5e8 | 175 | }; |
5544ad89 | 176 | |
54a0b537 | 177 | extern struct inferior_list all_lwps; |
0d62e5e8 | 178 | |
d0722149 DE |
179 | char *linux_child_pid_to_exec_file (int pid); |
180 | int elf_64_file_p (const char *file); | |
181 | ||
24a09b5f | 182 | void linux_attach_lwp (unsigned long pid); |
0d62e5e8 | 183 | |
24a09b5f | 184 | int thread_db_init (int use_events); |
dae5f5cf DJ |
185 | int thread_db_get_tls_address (struct thread_info *thread, CORE_ADDR offset, |
186 | CORE_ADDR load_module, CORE_ADDR *address); | |
95954743 PA |
187 | |
188 | struct lwp_info *find_lwp_pid (ptid_t ptid); |