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/*
* Copyright (c) 2014-2025, Intel Corporation
* SPDX-License-Identifier: BSD-3-Clause
*
* 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_PACKET_DECODER_H
#define PT_PACKET_DECODER_H
#include "intel-pt.h"
/* An Intel PT packet decoder. */
struct pt_packet_decoder {
/* The decoder configuration. */
struct pt_config config;
/* The current position in the trace buffer. */
const uint8_t *pos;
/* The position of the last PSB packet. */
const uint8_t *sync;
};
/* Initialize the packet decoder.
*
* Returns zero on success, a negative error code otherwise.
*/
extern int pt_pkt_decoder_init(struct pt_packet_decoder *,
const struct pt_config *);
/* Finalize the packet decoder. */
extern void pt_pkt_decoder_fini(struct pt_packet_decoder *);
static inline const struct pt_config *
pt_pkt_config(const struct pt_packet_decoder *decoder)
{
if (!decoder)
return NULL;
return &decoder->config;
}
static inline const uint8_t *
pt_pkt_pos(const struct pt_packet_decoder *decoder)
{
if (!decoder)
return NULL;
return decoder->pos;
}
static inline const uint8_t *
pt_pkt_end(const struct pt_packet_decoder *decoder)
{
const struct pt_config *config;
config = pt_pkt_config(decoder);
if (!config)
return NULL;
return config->end;
}
#endif /* PT_PACKET_DECODER_H */
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