| /* |
| * Copyright (c) 2013-2015, Intel Corporation |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * * Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * * Neither the name of Intel Corporation nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef PT_LAST_IP_H |
| #define PT_LAST_IP_H |
| |
| #include <stdint.h> |
| |
| struct pt_packet_ip; |
| struct pt_config; |
| |
| |
| /* Keeping track of the last-ip in Intel PT packets. */ |
| struct pt_last_ip { |
| /* The last IP. */ |
| uint64_t ip; |
| |
| /* Flags governing the handling of IP updates and queries: |
| * |
| * - we have seen an IP update. |
| */ |
| uint32_t have_ip:1; |
| /* - the IP has been suppressed in the last update. */ |
| uint32_t suppressed:1; |
| }; |
| |
| |
| /* Initialize (or reset) the last-ip. */ |
| extern void pt_last_ip_init(struct pt_last_ip *last_ip); |
| |
| /* Query the last-ip. |
| * |
| * If @ip is not NULL, provides the last-ip in @ip on success. |
| * |
| * Returns zero on success. |
| * Returns -pte_invalid if @last_ip is NULL. |
| * Returns -pte_noip if there is no last-ip. |
| * Returns -pte_ip_suppressed if the last-ip has been suppressed. |
| */ |
| extern int pt_last_ip_query(uint64_t *ip, const struct pt_last_ip *last_ip); |
| |
| /* Update last-ip. |
| * |
| * Updates @last_ip based on @packet and, if non-null, @config. |
| * |
| * Returns zero on success. |
| * Returns -pte_invalid if @last_ip or @packet is NULL. |
| * Returns -pte_bad_packet if @packet appears to be corrupted. |
| */ |
| extern int pt_last_ip_update_ip(struct pt_last_ip *last_ip, |
| const struct pt_packet_ip *packet, |
| const struct pt_config *config); |
| |
| #endif /* PT_LAST_IP_H */ |