1 /* 2 * Copyright (c) 2014-2018, Intel Corporation 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are met: 6 * 7 * * Redistributions of source code must retain the above copyright notice, 8 * this list of conditions and the following disclaimer. 9 * * Redistributions in binary form must reproduce the above copyright notice, 10 * this list of conditions and the following disclaimer in the documentation 11 * and/or other materials provided with the distribution. 12 * * Neither the name of Intel Corporation nor the names of its contributors 13 * may be used to endorse or promote products derived from this software 14 * without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef PT_QUERY_DECODER_H 30 #define PT_QUERY_DECODER_H 31 32 #include "pt_last_ip.h" 33 #include "pt_tnt_cache.h" 34 #include "pt_time.h" 35 #include "pt_event_queue.h" 36 37 #include "intel-pt.h" 38 39 struct pt_decoder_function; 40 41 42 /* An Intel PT query decoder. */ 43 struct pt_query_decoder { 44 /* The decoder configuration. */ 45 struct pt_config config; 46 47 /* The current position in the trace buffer. */ 48 const uint8_t *pos; 49 50 /* The position of the last PSB packet. */ 51 const uint8_t *sync; 52 53 /* The decoding function for the next packet. */ 54 const struct pt_decoder_function *next; 55 56 /* The last-ip. */ 57 struct pt_last_ip ip; 58 59 /* The cached tnt indicators. */ 60 struct pt_tnt_cache tnt; 61 62 /* Timing information. */ 63 struct pt_time time; 64 65 /* The time at the last query (before reading ahead). */ 66 struct pt_time last_time; 67 68 /* Timing calibration. */ 69 struct pt_time_cal tcal; 70 71 /* Pending (incomplete) events. */ 72 struct pt_event_queue evq; 73 74 /* The current event. */ 75 struct pt_event *event; 76 77 /* A collection of flags relevant for decoding: 78 * 79 * - tracing is enabled. 80 */ 81 uint32_t enabled:1; 82 83 /* - consume the current packet. */ 84 uint32_t consume_packet:1; 85 }; 86 87 /* Initialize the query decoder. 88 * 89 * Returns zero on success, a negative error code otherwise. 90 */ 91 extern int pt_qry_decoder_init(struct pt_query_decoder *, 92 const struct pt_config *); 93 94 /* Finalize the query decoder. */ 95 extern void pt_qry_decoder_fini(struct pt_query_decoder *); 96 97 /* Decoder functions (tracing context). */ 98 extern int pt_qry_decode_unknown(struct pt_query_decoder *); 99 extern int pt_qry_decode_pad(struct pt_query_decoder *); 100 extern int pt_qry_decode_psb(struct pt_query_decoder *); 101 extern int pt_qry_decode_tip(struct pt_query_decoder *); 102 extern int pt_qry_decode_tnt_8(struct pt_query_decoder *); 103 extern int pt_qry_decode_tnt_64(struct pt_query_decoder *); 104 extern int pt_qry_decode_tip_pge(struct pt_query_decoder *); 105 extern int pt_qry_decode_tip_pgd(struct pt_query_decoder *); 106 extern int pt_qry_decode_fup(struct pt_query_decoder *); 107 extern int pt_qry_decode_pip(struct pt_query_decoder *); 108 extern int pt_qry_decode_ovf(struct pt_query_decoder *); 109 extern int pt_qry_decode_mode(struct pt_query_decoder *); 110 extern int pt_qry_decode_psbend(struct pt_query_decoder *); 111 extern int pt_qry_decode_tsc(struct pt_query_decoder *); 112 extern int pt_qry_header_tsc(struct pt_query_decoder *); 113 extern int pt_qry_decode_cbr(struct pt_query_decoder *); 114 extern int pt_qry_header_cbr(struct pt_query_decoder *); 115 extern int pt_qry_decode_tma(struct pt_query_decoder *); 116 extern int pt_qry_decode_mtc(struct pt_query_decoder *); 117 extern int pt_qry_decode_cyc(struct pt_query_decoder *); 118 extern int pt_qry_decode_stop(struct pt_query_decoder *); 119 extern int pt_qry_decode_vmcs(struct pt_query_decoder *); 120 extern int pt_qry_decode_mnt(struct pt_query_decoder *); 121 extern int pt_qry_decode_exstop(struct pt_query_decoder *); 122 extern int pt_qry_decode_mwait(struct pt_query_decoder *); 123 extern int pt_qry_decode_pwre(struct pt_query_decoder *); 124 extern int pt_qry_decode_pwrx(struct pt_query_decoder *); 125 extern int pt_qry_decode_ptw(struct pt_query_decoder *); 126 127 /* Decoder functions (header context). */ 128 extern int pt_qry_header_fup(struct pt_query_decoder *); 129 extern int pt_qry_header_pip(struct pt_query_decoder *); 130 extern int pt_qry_header_mode(struct pt_query_decoder *); 131 extern int pt_qry_header_vmcs(struct pt_query_decoder *); 132 extern int pt_qry_header_mnt(struct pt_query_decoder *); 133 134 #endif /* PT_QUERY_DECODER_H */ 135