gdb/nat/linux-btrace.h - gdb

Global variables defined

Data types defined

Macros defined

Source code

  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"
  26. #include "vec.h"
  27. #include <stdint.h>

  29. #if HAVE_LINUX_PERF_EVENT_H
  30. #  include <linux/perf_event.h>
  31. #endif

  33. struct target_ops;

  35. /* Branch trace target information per thread.  */
  36. ‌struct btrace_target_info
  37. {
  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.  */
  43.   ptid_t ptid;

  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  */
  51.   int file;
  52.   void *buffer;
  53.   size_t size;
  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.  */
  60.   int ptr_bits;
  61. };

  63. /* See to_supports_btrace in target.h.  */
  64. extern int linux_supports_btrace (struct target_ops *);

  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 (VEC (btrace_block_s) **btrace,
  74. ‌                                            struct btrace_target_info *btinfo,
  75. ‌                                            enum btrace_read_type type);

  77. #endif /* LINUX_BTRACE_H */