tools/perf/util/intel-pt-decoder/intel-pt-decoder.h

   1 /*
   2  * intel_pt_decoder.h: Intel Processor Trace support
   3  * Copyright (c) 2013-2014, Intel Corporation.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms and conditions of the GNU General Public License,
   7  * version 2, as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  *
  14  */
  15
  16 #ifndef INCLUDE__INTEL_PT_DECODER_H__
  17 #define INCLUDE__INTEL_PT_DECODER_H__
  18
  19 #include <stdint.h>
  20 #include <stddef.h>
  21 #include <stdbool.h>
  22
  23 #include "intel-pt-insn-decoder.h"
  24
  25 #define INTEL_PT_IN_TX          (1 << 0)
  26 #define INTEL_PT_ABORT_TX       (1 << 1)
  27 #define INTEL_PT_ASYNC          (1 << 2)
  28
  29 enum intel_pt_sample_type {
  30         INTEL_PT_BRANCH         = 1 << 0,
  31         INTEL_PT_INSTRUCTION    = 1 << 1,
  32         INTEL_PT_TRANSACTION    = 1 << 2,
  33 };
  34
  35 enum intel_pt_period_type {
  36         INTEL_PT_PERIOD_NONE,
  37         INTEL_PT_PERIOD_INSTRUCTIONS,
  38         INTEL_PT_PERIOD_TICKS,
  39         INTEL_PT_PERIOD_MTC,
  40 };
  41
  42 enum {
  43         INTEL_PT_ERR_NOMEM = 1,
  44         INTEL_PT_ERR_INTERN,
  45         INTEL_PT_ERR_BADPKT,
  46         INTEL_PT_ERR_NODATA,
  47         INTEL_PT_ERR_NOINSN,
  48         INTEL_PT_ERR_MISMAT,
  49         INTEL_PT_ERR_OVR,
  50         INTEL_PT_ERR_LOST,
  51         INTEL_PT_ERR_UNK,
  52         INTEL_PT_ERR_NELOOP,
  53         INTEL_PT_ERR_MAX,
  54 };
  55
  56 struct intel_pt_state {
  57         enum intel_pt_sample_type type;
  58         int err;
  59         uint64_t from_ip;
  60         uint64_t to_ip;
  61         uint64_t cr3;
  62         uint64_t tot_insn_cnt;
  63         uint64_t timestamp;
  64         uint64_t est_timestamp;
  65         uint64_t trace_nr;
  66         uint32_t flags;
  67         enum intel_pt_insn_op insn_op;
  68         int insn_len;
  69 };
  70
  71 struct intel_pt_insn;
  72
  73 struct intel_pt_buffer {
  74         const unsigned char *buf;
  75         size_t len;
  76         bool consecutive;
  77         uint64_t ref_timestamp;
  78         uint64_t trace_nr;
  79 };
  80
  81 struct intel_pt_params {
  82         int (*get_trace)(struct intel_pt_buffer *buffer, void *data);
  83         int (*walk_insn)(struct intel_pt_insn *intel_pt_insn,
  84                          uint64_t *insn_cnt_ptr, uint64_t *ip, uint64_t to_ip,
  85                          uint64_t max_insn_cnt, void *data);
  86         void *data;
  87         bool return_compression;
  88         uint64_t period;
  89         enum intel_pt_period_type period_type;
  90         unsigned max_non_turbo_ratio;
  91         unsigned int mtc_period;
  92         uint32_t tsc_ctc_ratio_n;
  93         uint32_t tsc_ctc_ratio_d;
  94 };
  95
  96 struct intel_pt_decoder;
  97
  98 struct intel_pt_decoder *intel_pt_decoder_new(struct intel_pt_params *params);
  99 void intel_pt_decoder_free(struct intel_pt_decoder *decoder);
 100
 101 const struct intel_pt_state *intel_pt_decode(struct intel_pt_decoder *decoder);
 102
 103 unsigned char *intel_pt_find_overlap(unsigned char *buf_a, size_t len_a,
 104                                      unsigned char *buf_b, size_t len_b,
 105                                      bool have_tsc);
 106
 107 int intel_pt__strerror(int code, char *buf, size_t buflen);
 108
 109 #endif