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
;
38 /* If NT_TYPE isn't 0, it will be passed to ptrace as the 3rd
39 argument and the 4th argument should be "const struct iovec *". */
42 enum regset_type type
;
43 regset_fill_func fill_function
;
44 regset_store_func store_function
;
46 extern struct regset_info target_regsets
[];
51 struct process_info_private
53 /* Arch-specific additions. */
54 struct arch_process_info
*arch_private
;
56 /* libthread_db-specific additions. Not NULL if this process has loaded
57 thread_db, and it is active. */
58 struct thread_db
*thread_db
;
63 struct linux_target_ops
65 /* Architecture-specific setup. */
66 void (*arch_setup
) (void);
70 int (*cannot_fetch_register
) (int);
72 /* Returns 0 if we can store the register, 1 if we can not
73 store the register, and 2 if failure to store the register
75 int (*cannot_store_register
) (int);
76 CORE_ADDR (*get_pc
) (struct regcache
*regcache
);
77 void (*set_pc
) (struct regcache
*regcache
, CORE_ADDR newpc
);
78 const unsigned char *breakpoint
;
80 CORE_ADDR (*breakpoint_reinsert_addr
) (void);
82 int decr_pc_after_break
;
83 int (*breakpoint_at
) (CORE_ADDR pc
);
85 /* Breakpoint and watchpoint related functions. See target.h for
87 int (*insert_point
) (char type
, CORE_ADDR addr
, int len
);
88 int (*remove_point
) (char type
, CORE_ADDR addr
, int len
);
89 int (*stopped_by_watchpoint
) (void);
90 CORE_ADDR (*stopped_data_address
) (void);
92 /* Hooks to reformat register data for PEEKUSR/POKEUSR (in particular
93 for registers smaller than an xfer unit). */
94 void (*collect_ptrace_register
) (struct regcache
*regcache
,
95 int regno
, char *buf
);
96 void (*supply_ptrace_register
) (struct regcache
*regcache
,
97 int regno
, const char *buf
);
99 /* Hook to convert from target format to ptrace format and back.
100 Returns true if any conversion was done; false otherwise.
101 If DIRECTION is 1, then copy from INF to NATIVE.
102 If DIRECTION is 0, copy from NATIVE to INF. */
103 int (*siginfo_fixup
) (struct siginfo
*native
, void *inf
, int direction
);
105 /* Hook to call when a new process is created or attached to.
106 If extra per-process architecture-specific data is needed,
108 struct arch_process_info
* (*new_process
) (void);
110 /* Hook to call when a new thread is detected.
111 If extra per-thread architecture-specific data is needed,
113 struct arch_lwp_info
* (*new_thread
) (void);
115 /* Hook to call prior to resuming a thread. */
116 void (*prepare_to_resume
) (struct lwp_info
*);
118 /* Hook to support target specific qSupported. */
119 void (*process_qsupported
) (const char *);
121 /* Returns true if the low target supports tracepoints. */
122 int (*supports_tracepoints
) (void);
125 extern struct linux_target_ops the_low_target
;
127 #define ptid_of(proc) ((proc)->head.id)
128 #define pid_of(proc) ptid_get_pid ((proc)->head.id)
129 #define lwpid_of(proc) ptid_get_lwp ((proc)->head.id)
131 #define get_lwp(inf) ((struct lwp_info *)(inf))
132 #define get_thread_lwp(thr) (get_lwp (inferior_target_data (thr)))
133 #define get_lwp_thread(proc) ((struct thread_info *) \
134 find_inferior_id (&all_threads, \
135 get_lwp (proc)->head.id))
139 struct inferior_list_entry head
;
141 /* If this flag is set, the next SIGSTOP will be ignored (the
142 process will be immediately resumed). This means that either we
143 sent the SIGSTOP to it ourselves and got some other pending event
144 (so the SIGSTOP is still pending), or that we stopped the
145 inferior implicitly via PTRACE_ATTACH and have not waited for it
149 /* When this is true, we shall not try to resume this thread, even
150 if last_resume_kind isn't resume_stop. */
153 /* If this flag is set, the lwp is known to be stopped right now (stop
154 event already received in a wait()). */
157 /* If this flag is set, the lwp is known to be dead already (exit
158 event already received in a wait(), and is cached in
162 /* When stopped is set, the last wait status recorded for this lwp. */
165 /* When stopped is set, this is where the lwp stopped, with
166 decr_pc_after_break already accounted for. */
169 /* If this flag is set, STATUS_PENDING is a waitstatus that has not yet
171 int status_pending_p
;
174 /* STOPPED_BY_WATCHPOINT is non-zero if this LWP stopped with a data
176 int stopped_by_watchpoint
;
178 /* On architectures where it is possible to know the data address of
179 a triggered watchpoint, STOPPED_DATA_ADDRESS is non-zero, and
180 contains such data address. Only valid if STOPPED_BY_WATCHPOINT
182 CORE_ADDR stopped_data_address
;
184 /* If this is non-zero, it is a breakpoint to be reinserted at our next
185 stop (SIGTRAP stops only). */
186 CORE_ADDR bp_reinsert
;
188 /* If this flag is set, the last continue operation at the ptrace
189 level on this process was a single-step. */
192 /* If this flag is set, we need to set the event request flags the
193 next time we see this LWP stop. */
194 int must_set_ptrace_flags
;
196 /* If this is non-zero, it points to a chain of signals which need to
197 be delivered to this process. */
198 struct pending_signals
*pending_signals
;
200 /* A link used when resuming. It is initialized from the resume request,
201 and then processed and cleared in linux_resume_one_lwp. */
202 struct thread_resume
*resume
;
204 /* True if the LWP was seen stop at an internal breakpoint and needs
205 stepping over later when it is resumed. */
209 #ifdef HAVE_THREAD_DB_H
210 /* The thread handle, used for e.g. TLS access. Only valid if
211 THREAD_KNOWN is set. */
215 /* Arch-specific additions. */
216 struct arch_lwp_info
*arch_private
;
219 extern struct inferior_list all_lwps
;
221 char *linux_child_pid_to_exec_file (int pid
);
222 int elf_64_file_p (const char *file
);
224 void linux_attach_lwp (unsigned long pid
);
225 struct lwp_info
*find_lwp_pid (ptid_t ptid
);
227 /* From thread-db.c */
228 int thread_db_init (int use_events
);
229 void thread_db_detach (struct process_info
*);
230 void thread_db_mourn (struct process_info
*);
231 int thread_db_handle_monitor_command (char *);
232 int thread_db_get_tls_address (struct thread_info
*thread
, CORE_ADDR offset
,
233 CORE_ADDR load_module
, CORE_ADDR
*address
);
234 int thread_db_look_up_one_symbol (const char *name
, CORE_ADDR
*addrp
);