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 #ifdef HAVE_LINUX_REGSETS
25 typedef void (*regset_fill_func
) (void *);
26 typedef void (*regset_store_func
) (const void *);
35 int get_request
, set_request
;
37 enum regset_type type
;
38 regset_fill_func fill_function
;
39 regset_store_func store_function
;
41 extern struct regset_info target_regsets
[];
44 struct linux_target_ops
46 /* Architecture-specific setup. */
47 void (*arch_setup
) (void);
51 int (*cannot_fetch_register
) (int);
53 /* Returns 0 if we can store the register, 1 if we can not
54 store the register, and 2 if failure to store the register
56 int (*cannot_store_register
) (int);
57 CORE_ADDR (*get_pc
) (void);
58 void (*set_pc
) (CORE_ADDR newpc
);
59 const unsigned char *breakpoint
;
61 CORE_ADDR (*breakpoint_reinsert_addr
) (void);
64 int decr_pc_after_break
;
65 int (*breakpoint_at
) (CORE_ADDR pc
);
67 /* Watchpoint related functions. See target.h for comments. */
68 int (*insert_watchpoint
) (char type
, CORE_ADDR addr
, int len
);
69 int (*remove_watchpoint
) (char type
, CORE_ADDR addr
, int len
);
70 int (*stopped_by_watchpoint
) (void);
71 CORE_ADDR (*stopped_data_address
) (void);
73 /* Hooks to reformat register data for PEEKUSR/POKEUSR (in particular
74 for registers smaller than an xfer unit). */
75 void (*collect_ptrace_register
) (int regno
, char *buf
);
76 void (*supply_ptrace_register
) (int regno
, const char *buf
);
79 extern struct linux_target_ops the_low_target
;
81 #define pid_of(proc) ((proc)->head.id)
82 #define lwpid_of(proc) ((proc)->head.id)
84 #define get_lwp(inf) ((struct lwp_info *)(inf))
85 #define get_thread_lwp(thr) (get_lwp (inferior_target_data (thr)))
86 #define get_lwp_thread(proc) ((struct thread_info *) \
87 find_inferior_id (&all_threads, \
88 lwpid_of (get_lwp (proc))))
92 struct inferior_list_entry head
;
94 /* If this flag is set, the next SIGSTOP will be ignored (the
95 process will be immediately resumed). This means that either we
96 sent the SIGSTOP to it ourselves and got some other pending event
97 (so the SIGSTOP is still pending), or that we stopped the
98 inferior implicitly via PTRACE_ATTACH and have not waited for it
102 /* True if this thread was suspended (with vCont;t). */
105 /* If this flag is set, the lwp is known to be stopped right now (stop
106 event already received in a wait()). */
109 /* When stopped is set, the last wait status recorded for this lwp. */
112 /* If this flag is set, STATUS_PENDING is a waitstatus that has not yet
114 int status_pending_p
;
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
;
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
;
125 /* If this flag is set, the last continue operation on this process
126 was a single-step. */
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
;
133 /* A link used when resuming. It is initialized from the resume request,
134 and then processed and cleared in linux_resume_one_lwp. */
136 struct thread_resume
*resume
;
139 #ifdef HAVE_THREAD_DB_H
140 /* The thread handle, used for e.g. TLS access. Only valid if
141 THREAD_KNOWN is set. */
146 extern struct inferior_list all_lwps
;
148 void linux_attach_lwp (unsigned long pid
);
150 int thread_db_init (int use_events
);
151 int thread_db_get_tls_address (struct thread_info
*thread
, CORE_ADDR offset
,
152 CORE_ADDR load_module
, CORE_ADDR
*address
);