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/*
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* Copyright (c) 2013-2017, 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_DECODER_FUNCTION_H
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#define PT_DECODER_FUNCTION_H
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#include <stdint.h>
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struct pt_query_decoder;
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struct pt_packet_decoder;
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struct pt_packet;
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struct pt_config;
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/* Intel(R) Processor Trace decoder function flags. */
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enum pt_decoder_function_flag {
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/* The decoded packet contains an unconditional branch destination. */
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pdff_tip = 1 << 0,
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/* The decode packet contains unconditional branch destinations. */
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pdff_tnt = 1 << 1,
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/* The decoded packet contains an event. */
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pdff_event = 1 << 2,
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/* The decoded packet marks the end of a PSB header. */
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pdff_psbend = 1 << 3,
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/* The decoded packet contains a non-branch IP update. */
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pdff_fup = 1 << 4,
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/* The decoded packet is unknown to the decoder. */
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pdff_unknown = 1 << 5,
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/* The decoded packet contains timing information. */
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pdff_timing = 1 << 6,
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/* The decoded packet contains padding. */
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pdff_pad = 1 << 7
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};
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/* An Intel(R) Processor Trace decoder function. */
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struct pt_decoder_function {
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/* The function to analyze the next packet. */
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int (*packet)(struct pt_packet_decoder *, struct pt_packet *);
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/* The function to decode the next packet. */
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int (*decode)(struct pt_query_decoder *);
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/* The function to decode the next packet in segment header
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* context, i.e. between PSB and ENDPSB.
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*/
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int (*header)(struct pt_query_decoder *);
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/* Decoder function flags. */
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int flags;
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};
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/* Fetch the decoder function.
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*
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* Sets @dfun to the decoder function for decoding the packet at @pos.
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*
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* Returns 0 on success.
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* Returns -pte_internal if @dfun or @config is NULL.
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* Returns -pte_nosync if @pos is NULL or outside @config's trace buffer.
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* Returns -pte_eos if the opcode is incomplete or missing.
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*/
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extern int pt_df_fetch(const struct pt_decoder_function **dfun,
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const uint8_t *pos, const struct pt_config *config);
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/* Decoder functions for the various packet types.
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*
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* Do not call those functions directly!
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*/
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extern const struct pt_decoder_function pt_decode_unknown;
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extern const struct pt_decoder_function pt_decode_pad;
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extern const struct pt_decoder_function pt_decode_psb;
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extern const struct pt_decoder_function pt_decode_tip;
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extern const struct pt_decoder_function pt_decode_tnt_8;
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extern const struct pt_decoder_function pt_decode_tnt_64;
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extern const struct pt_decoder_function pt_decode_tip_pge;
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extern const struct pt_decoder_function pt_decode_tip_pgd;
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extern const struct pt_decoder_function pt_decode_fup;
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extern const struct pt_decoder_function pt_decode_pip;
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extern const struct pt_decoder_function pt_decode_ovf;
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extern const struct pt_decoder_function pt_decode_mode;
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extern const struct pt_decoder_function pt_decode_psbend;
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extern const struct pt_decoder_function pt_decode_tsc;
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extern const struct pt_decoder_function pt_decode_cbr;
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extern const struct pt_decoder_function pt_decode_tma;
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extern const struct pt_decoder_function pt_decode_mtc;
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extern const struct pt_decoder_function pt_decode_cyc;
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extern const struct pt_decoder_function pt_decode_stop;
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extern const struct pt_decoder_function pt_decode_vmcs;
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extern const struct pt_decoder_function pt_decode_mnt;
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#endif /* PT_DECODER_FUNCTION_H */
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