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/*
* Copyright (c) 2014-2016, 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_QUERY_DECODER_H
#define PT_QUERY_DECODER_H
#include "pt_last_ip.h"
#include "pt_tnt_cache.h"
#include "pt_time.h"
#include "pt_event_queue.h"
#include "intel-pt.h"
struct pt_decoder_function;
/* An Intel PT query decoder. */
struct pt_query_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;
/* The decoding function for the next packet. */
const struct pt_decoder_function *next;
/* The last-ip. */
struct pt_last_ip ip;
/* The cached tnt indicators. */
struct pt_tnt_cache tnt;
/* Timing information. */
struct pt_time time;
/* Timing calibration. */
struct pt_time_cal tcal;
/* Pending (incomplete) events. */
struct pt_event_queue evq;
/* The current event. */
struct pt_event *event;
/* A collection of flags relevant for decoding:
*
* - tracing is enabled.
*/
uint32_t enabled:1;
/* - consume the current packet. */
uint32_t consume_packet:1;
};
/* Initialize the query decoder.
*
* Returns zero on success, a negative error code otherwise.
*/
extern int pt_qry_decoder_init(struct pt_query_decoder *,
const struct pt_config *);
/* Finalize the query decoder. */
extern void pt_qry_decoder_fini(struct pt_query_decoder *);
/* Decoder functions (tracing context). */
extern int pt_qry_decode_unknown(struct pt_query_decoder *);
extern int pt_qry_decode_pad(struct pt_query_decoder *);
extern int pt_qry_decode_psb(struct pt_query_decoder *);
extern int pt_qry_decode_tip(struct pt_query_decoder *);
extern int pt_qry_decode_tnt_8(struct pt_query_decoder *);
extern int pt_qry_decode_tnt_64(struct pt_query_decoder *);
extern int pt_qry_decode_tip_pge(struct pt_query_decoder *);
extern int pt_qry_decode_tip_pgd(struct pt_query_decoder *);
extern int pt_qry_decode_fup(struct pt_query_decoder *);
extern int pt_qry_decode_pip(struct pt_query_decoder *);
extern int pt_qry_decode_ovf(struct pt_query_decoder *);
extern int pt_qry_decode_mode(struct pt_query_decoder *);
extern int pt_qry_decode_psbend(struct pt_query_decoder *);
extern int pt_qry_decode_tsc(struct pt_query_decoder *);
extern int pt_qry_header_tsc(struct pt_query_decoder *);
extern int pt_qry_decode_cbr(struct pt_query_decoder *);
extern int pt_qry_header_cbr(struct pt_query_decoder *);
extern int pt_qry_decode_tma(struct pt_query_decoder *);
extern int pt_qry_decode_mtc(struct pt_query_decoder *);
extern int pt_qry_decode_cyc(struct pt_query_decoder *);
extern int pt_qry_decode_stop(struct pt_query_decoder *);
extern int pt_qry_decode_vmcs(struct pt_query_decoder *);
extern int pt_qry_decode_mnt(struct pt_query_decoder *);
/* Decoder functions (header context). */
extern int pt_qry_header_fup(struct pt_query_decoder *);
extern int pt_qry_header_pip(struct pt_query_decoder *);
extern int pt_qry_header_mode(struct pt_query_decoder *);
extern int pt_qry_header_vmcs(struct pt_query_decoder *);
#endif /* PT_QUERY_DECODER_H */
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