1 /* Linux-dependent part of branch trace support for GDB, and GDBserver.
3 Copyright (C) 2013-2015 Free Software Foundation, Inc.
5 Contributed by Intel Corp. <markus.t.metzger@intel.com>
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 #ifndef LINUX_BTRACE_H
23 #define LINUX_BTRACE_H
25 #include "btrace-common.h"
29 #if HAVE_LINUX_PERF_EVENT_H
30 # include <linux/perf_event.h>
35 /* Branch trace target information per thread. */
36 struct btrace_target_info
38 #if HAVE_LINUX_PERF_EVENT_H
39 /* The Linux perf_event configuration for collecting the branch trace. */
40 struct perf_event_attr attr
;
42 /* The ptid of this thread. */
45 /* The mmap configuration mapping the branch trace perf_event buffer.
47 file .. the file descriptor
48 buffer .. the mmapped memory buffer
49 size .. the buffer's size in pages without the configuration page
50 data_head .. the data head from the last read */
54 unsigned long data_head
;
55 #endif /* HAVE_LINUX_PERF_EVENT_H */
57 /* The size of a pointer in bits for this thread.
58 The information is used to identify kernel addresses in order to skip
59 records from/to kernel space. */
63 /* See to_supports_btrace in target.h. */
64 extern int linux_supports_btrace (struct target_ops
*, enum btrace_format
);
66 /* See to_enable_btrace in target.h. */
67 extern struct btrace_target_info
*linux_enable_btrace (ptid_t ptid
);
69 /* See to_disable_btrace in target.h. */
70 extern enum btrace_error
linux_disable_btrace (struct btrace_target_info
*ti
);
72 /* See to_read_btrace in target.h. */
73 extern enum btrace_error
linux_read_btrace (struct btrace_data
*btrace
,
74 struct btrace_target_info
*btinfo
,
75 enum btrace_read_type type
);
77 #endif /* LINUX_BTRACE_H */
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