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85f87cf491
Its latest version merged from: ^/vendor/processor-trace/892e12c5a27bda5806d1e63269986bb4171b5a8b Sponsored by: DARPA, AFRL
79 lines
2.8 KiB
C
79 lines
2.8 KiB
C
/*
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* Copyright (c) 2013-2019, Intel Corporation
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* * Neither the name of Intel Corporation nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef PT_LAST_IP_H
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#define PT_LAST_IP_H
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#include <stdint.h>
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struct pt_packet_ip;
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struct pt_config;
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/* Keeping track of the last-ip in Intel PT packets. */
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struct pt_last_ip {
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/* The last IP. */
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uint64_t ip;
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/* Flags governing the handling of IP updates and queries:
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*
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* - we have seen an IP update.
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*/
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uint32_t have_ip:1;
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/* - the IP has been suppressed in the last update. */
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uint32_t suppressed:1;
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};
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/* Initialize (or reset) the last-ip. */
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extern void pt_last_ip_init(struct pt_last_ip *last_ip);
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/* Query the last-ip.
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*
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* If @ip is not NULL, provides the last-ip in @ip on success.
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*
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* Returns zero on success.
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* Returns -pte_internal if @last_ip is NULL.
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* Returns -pte_noip if there is no last-ip.
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* Returns -pte_ip_suppressed if the last-ip has been suppressed.
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*/
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extern int pt_last_ip_query(uint64_t *ip, const struct pt_last_ip *last_ip);
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/* Update last-ip.
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*
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* Updates @last_ip based on @packet and, if non-null, @config.
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*
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* Returns zero on success.
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* Returns -pte_internal if @last_ip or @packet is NULL.
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* Returns -pte_bad_packet if @packet appears to be corrupted.
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*/
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extern int pt_last_ip_update_ip(struct pt_last_ip *last_ip,
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const struct pt_packet_ip *packet,
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const struct pt_config *config);
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#endif /* PT_LAST_IP_H */
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