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 #define INTEL_PT_FUP_IP         (1 << 3)
  29
  30 enum intel_pt_sample_type {
  31         INTEL_PT_BRANCH         = 1 << 0,
  32         INTEL_PT_INSTRUCTION    = 1 << 1,
  33         INTEL_PT_TRANSACTION    = 1 << 2,
  34         INTEL_PT_PTW            = 1 << 3,
  35         INTEL_PT_MWAIT_OP       = 1 << 4,
  36         INTEL_PT_PWR_ENTRY      = 1 << 5,
  37         INTEL_PT_EX_STOP        = 1 << 6,
  38         INTEL_PT_PWR_EXIT       = 1 << 7,
  39         INTEL_PT_CBR_CHG        = 1 << 8,
  40 };
  41
  42 enum intel_pt_period_type {
  43         INTEL_PT_PERIOD_NONE,
  44         INTEL_PT_PERIOD_INSTRUCTIONS,
  45         INTEL_PT_PERIOD_TICKS,
  46         INTEL_PT_PERIOD_MTC,
  47 };
  48
  49 enum {
  50         INTEL_PT_ERR_NOMEM = 1,
  51         INTEL_PT_ERR_INTERN,
  52         INTEL_PT_ERR_BADPKT,
  53         INTEL_PT_ERR_NODATA,
  54         INTEL_PT_ERR_NOINSN,
  55         INTEL_PT_ERR_MISMAT,
  56         INTEL_PT_ERR_OVR,
  57         INTEL_PT_ERR_LOST,
  58         INTEL_PT_ERR_UNK,
  59         INTEL_PT_ERR_NELOOP,
  60         INTEL_PT_ERR_MAX,
  61 };
  62
  63 enum intel_pt_param_flags {
  64         /*
  65          * FUP packet can contain next linear instruction pointer instead of
  66          * current linear instruction pointer.
  67          */
  68         INTEL_PT_FUP_WITH_NLIP  = 1 << 0,
  69 };
  70
  71 struct intel_pt_state {
  72         enum intel_pt_sample_type type;
  73         int err;
  74         uint64_t from_ip;
  75         uint64_t to_ip;
  76         uint64_t cr3;
  77         uint64_t tot_insn_cnt;
  78         uint64_t timestamp;
  79         uint64_t est_timestamp;
  80         uint64_t trace_nr;
  81         uint64_t ptw_payload;
  82         uint64_t mwait_payload;
  83         uint64_t pwre_payload;
  84         uint64_t pwrx_payload;
  85         uint64_t cbr_payload;
  86         uint32_t flags;
  87         enum intel_pt_insn_op insn_op;
  88         int insn_len;
  89         char insn[INTEL_PT_INSN_BUF_SZ];
  90 };
  91
  92 struct intel_pt_insn;
  93
  94 struct intel_pt_buffer {
  95         const unsigned char *buf;
  96         size_t len;
  97         bool consecutive;
  98         uint64_t ref_timestamp;
  99         uint64_t trace_nr;
 100 };
 101
 102 struct intel_pt_params {
 103         int (*get_trace)(struct intel_pt_buffer *buffer, void *data);
 104         int (*walk_insn)(struct intel_pt_insn *intel_pt_insn,
 105                          uint64_t *insn_cnt_ptr, uint64_t *ip, uint64_t to_ip,
 106                          uint64_t max_insn_cnt, void *data);
 107         bool (*pgd_ip)(uint64_t ip, void *data);
 108         void *data;
 109         bool return_compression;
 110         bool branch_enable;
 111         uint64_t period;
 112         enum intel_pt_period_type period_type;
 113         unsigned max_non_turbo_ratio;
 114         unsigned int mtc_period;
 115         uint32_t tsc_ctc_ratio_n;
 116         uint32_t tsc_ctc_ratio_d;
 117         enum intel_pt_param_flags flags;
 118 };
 119
 120 struct intel_pt_decoder;
 121
 122 struct intel_pt_decoder *intel_pt_decoder_new(struct intel_pt_params *params);
 123 void intel_pt_decoder_free(struct intel_pt_decoder *decoder);
 124
 125 const struct intel_pt_state *intel_pt_decode(struct intel_pt_decoder *decoder);
 126
 127 unsigned char *intel_pt_find_overlap(unsigned char *buf_a, size_t len_a,
 128                                      unsigned char *buf_b, size_t len_b,
 129                                      bool have_tsc, bool *consecutive);
 130
 131 int intel_pt__strerror(int code, char *buf, size_t buflen);
 132
 133 #endif