1 /* Internal interfaces for the GNU/Linux specific target code for gdbserver.
2 Copyright (C) 2002, 2004, 2005, 2007, 2008, 2009
3 Free Software Foundation, Inc.
5 This file is part of GDB.
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
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
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.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 #ifdef HAVE_THREAD_DB_H
21 #include <thread_db.h>
24 #include "gdb_proc_service.h"
26 #ifdef HAVE_LINUX_REGSETS
27 typedef void (*regset_fill_func) (void *);
28 typedef void (*regset_store_func) (const void *);
37 int get_request, set_request;
39 enum regset_type type;
40 regset_fill_func fill_function;
41 regset_store_func store_function;
43 extern struct regset_info target_regsets[];
48 struct process_info_private
50 /* Arch-specific additions. */
51 struct arch_process_info *arch_private;
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;
60 struct linux_target_ops
62 /* Architecture-specific setup. */
63 void (*arch_setup) (void);
67 int (*cannot_fetch_register) (int);
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
72 int (*cannot_store_register) (int);
73 CORE_ADDR (*get_pc) (void);
74 void (*set_pc) (CORE_ADDR newpc);
75 const unsigned char *breakpoint;
77 CORE_ADDR (*breakpoint_reinsert_addr) (void);
79 int decr_pc_after_break;
80 int (*breakpoint_at) (CORE_ADDR pc);
82 /* Breakpoint and watchpoint related functions. See target.h for
84 int (*insert_point) (char type, CORE_ADDR addr, int len);
85 int (*remove_point) (char type, CORE_ADDR addr, int len);
86 int (*stopped_by_watchpoint) (void);
87 CORE_ADDR (*stopped_data_address) (void);
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);
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);
100 /* Hook to call when a new process is created or attached to.
101 If extra per-process architecture-specific data is needed,
103 struct arch_process_info * (*new_process) (void);
105 /* Hook to call when a new thread is detected.
106 If extra per-thread architecture-specific data is needed,
108 struct arch_lwp_info * (*new_thread) (void);
110 /* Hook to call prior to resuming a thread. */
111 void (*prepare_to_resume) (struct lwp_info *);
114 extern struct linux_target_ops the_low_target;
116 #define ptid_of(proc) ((proc)->head.id)
117 #define pid_of(proc) ptid_get_pid ((proc)->head.id)
118 #define lwpid_of(proc) ptid_get_lwp ((proc)->head.id)
120 #define get_lwp(inf) ((struct lwp_info *)(inf))
121 #define get_thread_lwp(thr) (get_lwp (inferior_target_data (thr)))
122 #define get_lwp_thread(proc) ((struct thread_info *) \
123 find_inferior_id (&all_threads, \
124 get_lwp (proc)->head.id))
128 struct inferior_list_entry head;
130 /* If this flag is set, the next SIGSTOP will be ignored (the
131 process will be immediately resumed). This means that either we
132 sent the SIGSTOP to it ourselves and got some other pending event
133 (so the SIGSTOP is still pending), or that we stopped the
134 inferior implicitly via PTRACE_ATTACH and have not waited for it
138 /* True if this thread was suspended (with vCont;t). */
141 /* If this flag is set, the lwp is known to be stopped right now (stop
142 event already received in a wait()). */
145 /* If this flag is set, the lwp is known to be dead already (exit
146 event already received in a wait(), and is cached in
150 /* When stopped is set, the last wait status recorded for this lwp. */
153 /* If this flag is set, STATUS_PENDING is a waitstatus that has not yet
155 int status_pending_p;
158 /* If this flag is set, the pending status is a (GDB-placed) breakpoint. */
159 int pending_is_breakpoint;
160 CORE_ADDR pending_stop_pc;
162 /* If this is non-zero, it is a breakpoint to be reinserted at our next
163 stop (SIGTRAP stops only). */
164 CORE_ADDR bp_reinsert;
166 /* If this flag is set, the last continue operation on this process
167 was a single-step. */
170 /* If this flag is set, we need to set the event request flags the
171 next time we see this LWP stop. */
172 int must_set_ptrace_flags;
174 /* If this is non-zero, it points to a chain of signals which need to
175 be delivered to this process. */
176 struct pending_signals *pending_signals;
178 /* A link used when resuming. It is initialized from the resume request,
179 and then processed and cleared in linux_resume_one_lwp. */
181 struct thread_resume *resume;
184 #ifdef HAVE_THREAD_DB_H
185 /* The thread handle, used for e.g. TLS access. Only valid if
186 THREAD_KNOWN is set. */
190 /* Arch-specific additions. */
191 struct arch_lwp_info *arch_private;
194 extern struct inferior_list all_lwps;
196 char *linux_child_pid_to_exec_file (int pid);
197 int elf_64_file_p (const char *file);
199 void linux_attach_lwp (unsigned long pid);
200 struct lwp_info *find_lwp_pid (ptid_t ptid);
202 /* From thread-db.c */
203 int thread_db_init (int use_events);
204 void thread_db_free (struct process_info *);
205 int thread_db_handle_monitor_command (char *);
206 int thread_db_get_tls_address (struct thread_info *thread, CORE_ADDR offset,
207 CORE_ADDR load_module, CORE_ADDR *address);