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perf tools: Add Intel PT packet decoder

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Add support for decoding Intel Processor Trace packets.

This essentially provides intel_pt_get_packet() which takes a buffer of
binary data and returns the decoded packet.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1437150840-31811-3-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter
2015-07-17 19:33:37 +03:00
committed by Arnaldo Carvalho de Melo
parent 55ea4ab426
commit a4e925905c
4 changed files with 466 additions and 0 deletions
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64
tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.h Normal file
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/*
* intel_pt_pkt_decoder.h: Intel Processor Trace support
* Copyright (c) 2013-2014, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
*/
#ifndef INCLUDE__INTEL_PT_PKT_DECODER_H__
#define INCLUDE__INTEL_PT_PKT_DECODER_H__
#include <stddef.h>
#include <stdint.h>
#define INTEL_PT_PKT_DESC_MAX 256
#define INTEL_PT_NEED_MORE_BYTES -1
#define INTEL_PT_BAD_PACKET -2
#define INTEL_PT_PSB_STR "\002\202\002\202\002\202\002\202" \
"\002\202\002\202\002\202\002\202"
#define INTEL_PT_PSB_LEN 16
#define INTEL_PT_PKT_MAX_SZ 16
enum intel_pt_pkt_type {
INTEL_PT_BAD,
INTEL_PT_PAD,
INTEL_PT_TNT,
INTEL_PT_TIP_PGD,
INTEL_PT_TIP_PGE,
INTEL_PT_TSC,
INTEL_PT_MODE_EXEC,
INTEL_PT_MODE_TSX,
INTEL_PT_TIP,
INTEL_PT_FUP,
INTEL_PT_PSB,
INTEL_PT_PSBEND,
INTEL_PT_CBR,
INTEL_PT_PIP,
INTEL_PT_OVF,
};
struct intel_pt_pkt {
enum intel_pt_pkt_type type;
int count;
uint64_t payload;
};
const char *intel_pt_pkt_name(enum intel_pt_pkt_type);
int intel_pt_get_packet(const unsigned char *buf, size_t len,
struct intel_pt_pkt *packet);
int intel_pt_pkt_desc(const struct intel_pt_pkt *packet, char *buf, size_t len);
#endif