1 /* Internal interfaces for the GNU/Linux specific target code for gdbserver.
2 Copyright (C) 2002, 2004, 2005, 2007, 2008, 2009, 2010
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
) (struct regcache
*, void *);
28 typedef void (*regset_store_func
) (struct regcache
*, 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
) (struct regcache
*regcache
);
74 void (*set_pc
) (struct regcache
*regcache
, 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
) (struct regcache
*regcache
,
92 int regno
, char *buf
);
93 void (*supply_ptrace_register
) (struct regcache
*regcache
,
94 int regno
, const char *buf
);
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
);
102 /* Hook to call when a new process is created or attached to.
103 If extra per-process architecture-specific data is needed,
105 struct arch_process_info
* (*new_process
) (void);
107 /* Hook to call when a new thread is detected.
108 If extra per-thread architecture-specific data is needed,
110 struct arch_lwp_info
* (*new_thread
) (void);
112 /* Hook to call prior to resuming a thread. */
113 void (*prepare_to_resume
) (struct lwp_info
*);
116 extern struct linux_target_ops the_low_target
;
118 #define ptid_of(proc) ((proc)->head.id)
119 #define pid_of(proc) ptid_get_pid ((proc)->head.id)
120 #define lwpid_of(proc) ptid_get_lwp ((proc)->head.id)
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, \
126 get_lwp (proc)->head.id))
130 struct inferior_list_entry head
;
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
140 /* When this is true, we shall not try to resume this thread, even
141 if last_resume_kind isn't resume_stop. */
144 /* If this flag is set, the lwp is known to be stopped right now (stop
145 event already received in a wait()). */
148 /* If this flag is set, the lwp is known to be dead already (exit
149 event already received in a wait(), and is cached in
153 /* When stopped is set, the last wait status recorded for this lwp. */
156 /* When stopped is set, this is where the lwp stopped, with
157 decr_pc_after_break already accounted for. */
160 /* If this flag is set, STATUS_PENDING is a waitstatus that has not yet
162 int status_pending_p
;
165 /* STOPPED_BY_WATCHPOINT is non-zero if this LWP stopped with a data
167 int stopped_by_watchpoint
;
169 /* On architectures where it is possible to know the data address of
170 a triggered watchpoint, STOPPED_DATA_ADDRESS is non-zero, and
171 contains such data address. Only valid if STOPPED_BY_WATCHPOINT
173 CORE_ADDR stopped_data_address
;
175 /* If this is non-zero, it is a breakpoint to be reinserted at our next
176 stop (SIGTRAP stops only). */
177 CORE_ADDR bp_reinsert
;
179 /* If this flag is set, the last continue operation at the ptrace
180 level on this process was a single-step. */
183 /* If this flag is set, we need to set the event request flags the
184 next time we see this LWP stop. */
185 int must_set_ptrace_flags
;
187 /* If this is non-zero, it points to a chain of signals which need to
188 be delivered to this process. */
189 struct pending_signals
*pending_signals
;
191 /* A link used when resuming. It is initialized from the resume request,
192 and then processed and cleared in linux_resume_one_lwp. */
193 struct thread_resume
*resume
;
195 /* The last resume GDB requested on this thread. */
196 enum resume_kind last_resume_kind
;
198 /* True if the LWP was seen stop at an internal breakpoint and needs
199 stepping over later when it is resumed. */
203 #ifdef HAVE_THREAD_DB_H
204 /* The thread handle, used for e.g. TLS access. Only valid if
205 THREAD_KNOWN is set. */
209 /* Arch-specific additions. */
210 struct arch_lwp_info
*arch_private
;
213 extern struct inferior_list all_lwps
;
215 char *linux_child_pid_to_exec_file (int pid
);
216 int elf_64_file_p (const char *file
);
218 void linux_attach_lwp (unsigned long pid
);
219 struct lwp_info
*find_lwp_pid (ptid_t ptid
);
221 /* From thread-db.c */
222 int thread_db_init (int use_events
);
223 void thread_db_free (struct process_info
*, int detaching
);
224 int thread_db_handle_monitor_command (char *);
225 int thread_db_get_tls_address (struct thread_info
*thread
, CORE_ADDR offset
,
226 CORE_ADDR load_module
, CORE_ADDR
*address
);