projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c97f91e MM |
1 | /* Linux-dependent part of branch trace support for GDB, and GDBserver. |
| 2 | ||
| ecd75fc8 | 3 | Copyright (C) 2013-2014 Free Software Foundation, Inc. |
| 7c97f91e MM |
4 | |
| 5 | Contributed by Intel Corp. <markus.t.metzger@intel.com> | |
| 6 | ||
| 7 | This file is part of GDB. | |
| 8 | ||
| 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. | |
| 13 | ||
| 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. | |
| 18 | ||
| 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/>. */ | |
| 21 | ||
| 22 | #ifndef LINUX_BTRACE_H | |
| 23 | #define LINUX_BTRACE_H | |
| 24 | ||
| 25 | #include "btrace-common.h" | |
| 26 | #include "config.h" | |
| 27 | #include "vec.h" | |
| 28 | #include "ptid.h" | |
| 29 | #include <stddef.h> | |
| 30 | #include <stdint.h> | |
| 31 | ||
| 32 | #if HAVE_LINUX_PERF_EVENT_H | |
| 33 | # include <linux/perf_event.h> | |
| 34 | #endif | |
| 35 | ||
| 36 | /* Branch trace target information per thread. */ | |
| 37 | struct btrace_target_info | |
| 38 | { | |
| 39 | #if HAVE_LINUX_PERF_EVENT_H | |
| 40 | /* The Linux perf_event configuration for collecting the branch trace. */ | |
| 41 | struct perf_event_attr attr; | |
| 42 | ||
| 43 | /* The ptid of this thread. */ | |
| 44 | ptid_t ptid; | |
| 45 | ||
| 46 | /* The mmap configuration mapping the branch trace perf_event buffer. | |
| 47 | ||
| 48 | file .. the file descriptor | |
| 49 | buffer .. the mmapped memory buffer | |
| 50 | size .. the buffer's size in pages without the configuration page | |
| 51 | data_head .. the data head from the last read */ | |
| 52 | int file; | |
| 53 | void *buffer; | |
| 54 | size_t size; | |
| 55 | unsigned long data_head; | |
| 56 | #endif /* HAVE_LINUX_PERF_EVENT_H */ | |
| 57 | ||
| 58 | /* The size of a pointer in bits for this thread. | |
| 59 | The information is used to identify kernel addresses in order to skip | |
| 60 | records from/to kernel space. */ | |
| 61 | int ptr_bits; | |
| 62 | }; | |
| 63 | ||
| 969c39fb | 64 | /* See to_supports_btrace in target.h. */ |
| 46917d26 | 65 | extern int linux_supports_btrace (struct target_ops *); |
| 7c97f91e | 66 | |
| 969c39fb | 67 | /* See to_enable_btrace in target.h. */ |
| 7c97f91e MM |
68 | extern struct btrace_target_info *linux_enable_btrace (ptid_t ptid); |
| 69 | ||
| 969c39fb MM |
70 | /* See to_disable_btrace in target.h. */ |
| 71 | extern enum btrace_error linux_disable_btrace (struct btrace_target_info *ti); | |
| 7c97f91e | 72 | |
| 969c39fb MM |
73 | /* See to_read_btrace in target.h. */ |
| 74 | extern enum btrace_error linux_read_btrace (VEC (btrace_block_s) **btrace, | |
| 75 | struct btrace_target_info *btinfo, | |
| 76 | enum btrace_read_type type); | |
| 7c97f91e MM |
77 | |
| 78 | #endif /* LINUX_BTRACE_H */ |