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58caa3dc | 1 | /* Internal interfaces for the GNU/Linux specific target code for gdbserver. |
6aba47ca | 2 | Copyright (C) 2002, 2004, 2005, 2007 Free Software Foundation, Inc. |
58caa3dc DJ |
3 | |
4 | This file is part of GDB. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 8 | the Free Software Foundation; either version 3 of the License, or |
58caa3dc DJ |
9 | (at your option) any later version. |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
58caa3dc | 18 | |
dae5f5cf DJ |
19 | #ifdef HAVE_THREAD_DB_H |
20 | #include <thread_db.h> | |
21 | #endif | |
22 | ||
58caa3dc | 23 | #ifdef HAVE_LINUX_REGSETS |
0d62e5e8 DJ |
24 | typedef void (*regset_fill_func) (void *); |
25 | typedef void (*regset_store_func) (const void *); | |
26 | enum regset_type { | |
27 | GENERAL_REGS, | |
28 | FP_REGS, | |
29 | EXTENDED_REGS, | |
30 | }; | |
31 | ||
58caa3dc DJ |
32 | struct regset_info |
33 | { | |
34 | int get_request, set_request; | |
35 | int size; | |
0d62e5e8 DJ |
36 | enum regset_type type; |
37 | regset_fill_func fill_function; | |
38 | regset_store_func store_function; | |
58caa3dc DJ |
39 | }; |
40 | extern struct regset_info target_regsets[]; | |
41 | #endif | |
2ec06d2e DJ |
42 | |
43 | struct linux_target_ops | |
44 | { | |
45 | int num_regs; | |
46 | int *regmap; | |
47 | int (*cannot_fetch_register) (int); | |
bc1e36ca DJ |
48 | |
49 | /* Returns 0 if we can store the register, 1 if we can not | |
50 | store the register, and 2 if failure to store the register | |
51 | is acceptable. */ | |
2ec06d2e | 52 | int (*cannot_store_register) (int); |
0d62e5e8 | 53 | CORE_ADDR (*get_pc) (void); |
611cb4a5 | 54 | void (*set_pc) (CORE_ADDR newpc); |
f450004a | 55 | const unsigned char *breakpoint; |
611cb4a5 DJ |
56 | int breakpoint_len; |
57 | CORE_ADDR (*breakpoint_reinsert_addr) (void); | |
0d62e5e8 DJ |
58 | |
59 | ||
60 | int decr_pc_after_break; | |
61 | int (*breakpoint_at) (CORE_ADDR pc); | |
e013ee27 OF |
62 | |
63 | /* Watchpoint related functions. See target.h for comments. */ | |
64 | int (*insert_watchpoint) (char type, CORE_ADDR addr, int len); | |
65 | int (*remove_watchpoint) (char type, CORE_ADDR addr, int len); | |
66 | int (*stopped_by_watchpoint) (void); | |
67 | CORE_ADDR (*stopped_data_address) (void); | |
68 | ||
5a1f5858 DJ |
69 | /* Whether to left-pad registers for PEEKUSR/POKEUSR if they are smaller |
70 | than an xfer unit. */ | |
71 | int left_pad_xfer; | |
23181151 DJ |
72 | |
73 | /* What string to report to GDB when it asks for the architecture, | |
74 | or NULL not to answer. */ | |
75 | const char *arch_string; | |
2ec06d2e DJ |
76 | }; |
77 | ||
78 | extern struct linux_target_ops the_low_target; | |
0d62e5e8 DJ |
79 | |
80 | #define get_process(inf) ((struct process_info *)(inf)) | |
81 | #define get_thread_process(thr) (get_process (inferior_target_data (thr))) | |
82 | #define get_process_thread(proc) ((struct thread_info *) \ | |
83 | find_inferior_id (&all_threads, \ | |
84 | get_process (proc)->tid)) | |
85 | ||
86 | struct process_info | |
87 | { | |
88 | struct inferior_list_entry head; | |
89 | int thread_known; | |
a1928bad DJ |
90 | unsigned long lwpid; |
91 | unsigned long tid; | |
0d62e5e8 | 92 | |
ae13219e DJ |
93 | /* If this flag is set, the next SIGSTOP will be ignored (the |
94 | process will be immediately resumed). This means that either we | |
95 | sent the SIGSTOP to it ourselves and got some other pending event | |
96 | (so the SIGSTOP is still pending), or that we stopped the | |
97 | inferior implicitly via PTRACE_ATTACH and have not waited for it | |
98 | yet. */ | |
0d62e5e8 DJ |
99 | int stop_expected; |
100 | ||
101 | /* If this flag is set, the process is known to be stopped right now (stop | |
102 | event already received in a wait()). */ | |
103 | int stopped; | |
104 | ||
32ca6d61 DJ |
105 | /* When stopped is set, the last wait status recorded for this process. */ |
106 | int last_status; | |
107 | ||
0d62e5e8 DJ |
108 | /* If this flag is set, we have sent a SIGSTOP to this process and are |
109 | waiting for it to stop. */ | |
110 | int sigstop_sent; | |
111 | ||
112 | /* If this flag is set, STATUS_PENDING is a waitstatus that has not yet | |
113 | been reported. */ | |
114 | int status_pending_p; | |
115 | int status_pending; | |
116 | ||
117 | /* If this flag is set, the pending status is a (GDB-placed) breakpoint. */ | |
118 | int pending_is_breakpoint; | |
119 | CORE_ADDR pending_stop_pc; | |
120 | ||
121 | /* If this is non-zero, it is a breakpoint to be reinserted at our next | |
122 | stop (SIGTRAP stops only). */ | |
123 | CORE_ADDR bp_reinsert; | |
124 | ||
125 | /* If this flag is set, the last continue operation on this process | |
126 | was a single-step. */ | |
127 | int stepping; | |
128 | ||
129 | /* If this is non-zero, it points to a chain of signals which need to | |
130 | be delivered to this process. */ | |
131 | struct pending_signals *pending_signals; | |
5544ad89 DJ |
132 | |
133 | /* A link used when resuming. It is initialized from the resume request, | |
134 | and then processed and cleared in linux_resume_one_process. */ | |
135 | ||
136 | struct thread_resume *resume; | |
dae5f5cf DJ |
137 | |
138 | #ifdef HAVE_THREAD_DB_H | |
139 | /* The thread handle, used for e.g. TLS access. */ | |
140 | td_thrhandle_t th; | |
141 | #endif | |
0d62e5e8 | 142 | }; |
5544ad89 | 143 | |
0d62e5e8 DJ |
144 | extern struct inferior_list all_processes; |
145 | ||
a1928bad | 146 | void linux_attach_lwp (unsigned long pid, unsigned long tid); |
0d62e5e8 DJ |
147 | |
148 | int thread_db_init (void); | |
dae5f5cf DJ |
149 | int thread_db_get_tls_address (struct thread_info *thread, CORE_ADDR offset, |
150 | CORE_ADDR load_module, CORE_ADDR *address); |