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Diffstat (limited to 'libipt/internal/include/pt_query_decoder.h')
| -rw-r--r-- | libipt/internal/include/pt_query_decoder.h | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/libipt/internal/include/pt_query_decoder.h b/libipt/internal/include/pt_query_decoder.h new file mode 100644 index 0000000000000..355338feab1cb --- /dev/null +++ b/libipt/internal/include/pt_query_decoder.h @@ -0,0 +1,134 @@ +/* + * Copyright (c) 2014-2018, Intel Corporation + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * * Neither the name of Intel Corporation nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef PT_QUERY_DECODER_H +#define PT_QUERY_DECODER_H + +#include "pt_last_ip.h" +#include "pt_tnt_cache.h" +#include "pt_time.h" +#include "pt_event_queue.h" + +#include "intel-pt.h" + +struct pt_decoder_function; + + +/* An Intel PT query decoder. */ +struct pt_query_decoder { + /* The decoder configuration. */ + struct pt_config config; + + /* The current position in the trace buffer. */ + const uint8_t *pos; + + /* The position of the last PSB packet. */ + const uint8_t *sync; + + /* The decoding function for the next packet. */ + const struct pt_decoder_function *next; + + /* The last-ip. */ + struct pt_last_ip ip; + + /* The cached tnt indicators. */ + struct pt_tnt_cache tnt; + + /* Timing information. */ + struct pt_time time; + + /* The time at the last query (before reading ahead). */ + struct pt_time last_time; + + /* Timing calibration. */ + struct pt_time_cal tcal; + + /* Pending (incomplete) events. */ + struct pt_event_queue evq; + + /* The current event. */ + struct pt_event *event; + + /* A collection of flags relevant for decoding: + * + * - tracing is enabled. + */ + uint32_t enabled:1; + + /* - consume the current packet. */ + uint32_t consume_packet:1; +}; + +/* Initialize the query decoder. + * + * Returns zero on success, a negative error code otherwise. + */ +extern int pt_qry_decoder_init(struct pt_query_decoder *, + const struct pt_config *); + +/* Finalize the query decoder. */ +extern void pt_qry_decoder_fini(struct pt_query_decoder *); + +/* Decoder functions (tracing context). */ +extern int pt_qry_decode_unknown(struct pt_query_decoder *); +extern int pt_qry_decode_pad(struct pt_query_decoder *); +extern int pt_qry_decode_psb(struct pt_query_decoder *); +extern int pt_qry_decode_tip(struct pt_query_decoder *); +extern int pt_qry_decode_tnt_8(struct pt_query_decoder *); +extern int pt_qry_decode_tnt_64(struct pt_query_decoder *); +extern int pt_qry_decode_tip_pge(struct pt_query_decoder *); +extern int pt_qry_decode_tip_pgd(struct pt_query_decoder *); +extern int pt_qry_decode_fup(struct pt_query_decoder *); +extern int pt_qry_decode_pip(struct pt_query_decoder *); +extern int pt_qry_decode_ovf(struct pt_query_decoder *); +extern int pt_qry_decode_mode(struct pt_query_decoder *); +extern int pt_qry_decode_psbend(struct pt_query_decoder *); +extern int pt_qry_decode_tsc(struct pt_query_decoder *); +extern int pt_qry_header_tsc(struct pt_query_decoder *); +extern int pt_qry_decode_cbr(struct pt_query_decoder *); +extern int pt_qry_header_cbr(struct pt_query_decoder *); +extern int pt_qry_decode_tma(struct pt_query_decoder *); +extern int pt_qry_decode_mtc(struct pt_query_decoder *); +extern int pt_qry_decode_cyc(struct pt_query_decoder *); +extern int pt_qry_decode_stop(struct pt_query_decoder *); +extern int pt_qry_decode_vmcs(struct pt_query_decoder *); +extern int pt_qry_decode_mnt(struct pt_query_decoder *); +extern int pt_qry_decode_exstop(struct pt_query_decoder *); +extern int pt_qry_decode_mwait(struct pt_query_decoder *); +extern int pt_qry_decode_pwre(struct pt_query_decoder *); +extern int pt_qry_decode_pwrx(struct pt_query_decoder *); +extern int pt_qry_decode_ptw(struct pt_query_decoder *); + +/* Decoder functions (header context). */ +extern int pt_qry_header_fup(struct pt_query_decoder *); +extern int pt_qry_header_pip(struct pt_query_decoder *); +extern int pt_qry_header_mode(struct pt_query_decoder *); +extern int pt_qry_header_vmcs(struct pt_query_decoder *); +extern int pt_qry_header_mnt(struct pt_query_decoder *); + +#endif /* PT_QUERY_DECODER_H */ |