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/*
* intel_pt_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_DECODER_H__
#define INCLUDE__INTEL_PT_DECODER_H__
#include <stdint.h>
#include <stddef.h>
#include <stdbool.h>
#include "intel-pt-insn-decoder.h"
#define INTEL_PT_IN_TX (1 << 0)
#define INTEL_PT_ABORT_TX (1 << 1)
#define INTEL_PT_ASYNC (1 << 2)
#define INTEL_PT_FUP_IP (1 << 3)
enum intel_pt_sample_type {
INTEL_PT_BRANCH = 1 << 0,
INTEL_PT_INSTRUCTION = 1 << 1,
INTEL_PT_TRANSACTION = 1 << 2,
INTEL_PT_PTW = 1 << 3,
INTEL_PT_MWAIT_OP = 1 << 4,
INTEL_PT_PWR_ENTRY = 1 << 5,
INTEL_PT_EX_STOP = 1 << 6,
INTEL_PT_PWR_EXIT = 1 << 7,
INTEL_PT_CBR_CHG = 1 << 8,
INTEL_PT_TRACE_BEGIN = 1 << 9,
INTEL_PT_TRACE_END = 1 << 10,
};
enum intel_pt_period_type {
INTEL_PT_PERIOD_NONE,
INTEL_PT_PERIOD_INSTRUCTIONS,
INTEL_PT_PERIOD_TICKS,
INTEL_PT_PERIOD_MTC,
};
enum {
INTEL_PT_ERR_NOMEM = 1,
INTEL_PT_ERR_INTERN,
INTEL_PT_ERR_BADPKT,
INTEL_PT_ERR_NODATA,
INTEL_PT_ERR_NOINSN,
INTEL_PT_ERR_MISMAT,
INTEL_PT_ERR_OVR,
INTEL_PT_ERR_LOST,
INTEL_PT_ERR_UNK,
INTEL_PT_ERR_NELOOP,
INTEL_PT_ERR_MAX,
};
enum intel_pt_param_flags {
/*
* FUP packet can contain next linear instruction pointer instead of
* current linear instruction pointer.
*/
INTEL_PT_FUP_WITH_NLIP = 1 << 0,
};
struct intel_pt_state {
enum intel_pt_sample_type type;
int err;
uint64_t from_ip;
uint64_t to_ip;
uint64_t cr3;
uint64_t tot_insn_cnt;
uint64_t tot_cyc_cnt;
uint64_t timestamp;
uint64_t est_timestamp;
uint64_t trace_nr;
uint64_t ptw_payload;
uint64_t mwait_payload;
uint64_t pwre_payload;
uint64_t pwrx_payload;
uint64_t cbr_payload;
uint32_t flags;
enum intel_pt_insn_op insn_op;
int insn_len;
char insn[INTEL_PT_INSN_BUF_SZ];
};
struct intel_pt_insn;
struct intel_pt_buffer {
const unsigned char *buf;
size_t len;
bool consecutive;
uint64_t ref_timestamp;
uint64_t trace_nr;
};
typedef int (*intel_pt_lookahead_cb_t)(struct intel_pt_buffer *, void *);
struct intel_pt_params {
int (*get_trace)(struct intel_pt_buffer *buffer, void *data);
int (*walk_insn)(struct intel_pt_insn *intel_pt_insn,
uint64_t *insn_cnt_ptr, uint64_t *ip, uint64_t to_ip,
uint64_t max_insn_cnt, void *data);
bool (*pgd_ip)(uint64_t ip, void *data);
int (*lookahead)(void *data, intel_pt_lookahead_cb_t cb, void *cb_data);
void *data;
bool return_compression;
bool branch_enable;
uint64_t period;
enum intel_pt_period_type period_type;
unsigned max_non_turbo_ratio;
unsigned int mtc_period;
uint32_t tsc_ctc_ratio_n;
uint32_t tsc_ctc_ratio_d;
enum intel_pt_param_flags flags;
};
struct intel_pt_decoder;
struct intel_pt_decoder *intel_pt_decoder_new(struct intel_pt_params *params);
void intel_pt_decoder_free(struct intel_pt_decoder *decoder);
const struct intel_pt_state *intel_pt_decode(struct intel_pt_decoder *decoder);
int intel_pt_fast_forward(struct intel_pt_decoder *decoder, uint64_t timestamp);
unsigned char *intel_pt_find_overlap(unsigned char *buf_a, size_t len_a,
unsigned char *buf_b, size_t len_b,
bool have_tsc, bool *consecutive);
int intel_pt__strerror(int code, char *buf, size_t buflen);
#endif
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