88 lines
1.9 KiB
C
88 lines
1.9 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* intel_pt_pkt_decoder.h: Intel Processor Trace support
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* Copyright (c) 2013-2014, Intel Corporation.
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*/
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#ifndef INCLUDE__INTEL_PT_PKT_DECODER_H__
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#define INCLUDE__INTEL_PT_PKT_DECODER_H__
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#include <stddef.h>
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#include <stdint.h>
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#define INTEL_PT_PKT_DESC_MAX 256
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#define INTEL_PT_NEED_MORE_BYTES -1
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#define INTEL_PT_BAD_PACKET -2
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#define INTEL_PT_PSB_STR "\002\202\002\202\002\202\002\202" \
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"\002\202\002\202\002\202\002\202"
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#define INTEL_PT_PSB_LEN 16
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#define INTEL_PT_PKT_MAX_SZ 16
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enum intel_pt_pkt_type {
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INTEL_PT_BAD,
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INTEL_PT_PAD,
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INTEL_PT_TNT,
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INTEL_PT_TIP_PGD,
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INTEL_PT_TIP_PGE,
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INTEL_PT_TSC,
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INTEL_PT_TMA,
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INTEL_PT_MODE_EXEC,
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INTEL_PT_MODE_TSX,
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INTEL_PT_MTC,
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INTEL_PT_TIP,
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INTEL_PT_FUP,
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INTEL_PT_CYC,
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INTEL_PT_VMCS,
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INTEL_PT_PSB,
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INTEL_PT_PSBEND,
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INTEL_PT_CBR,
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INTEL_PT_TRACESTOP,
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INTEL_PT_PIP,
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INTEL_PT_OVF,
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INTEL_PT_MNT,
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INTEL_PT_PTWRITE,
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INTEL_PT_PTWRITE_IP,
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INTEL_PT_EXSTOP,
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INTEL_PT_EXSTOP_IP,
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INTEL_PT_MWAIT,
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INTEL_PT_PWRE,
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INTEL_PT_PWRX,
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INTEL_PT_BBP,
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INTEL_PT_BIP,
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INTEL_PT_BEP,
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INTEL_PT_BEP_IP,
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};
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struct intel_pt_pkt {
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enum intel_pt_pkt_type type;
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int count;
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uint64_t payload;
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};
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/*
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* Decoding of BIP packets conflicts with single-byte TNT packets. Since BIP
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* packets only occur in the context of a block (i.e. between BBP and BEP), that
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* context must be recorded and passed to the packet decoder.
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*/
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enum intel_pt_pkt_ctx {
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INTEL_PT_NO_CTX, /* BIP packets are invalid */
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INTEL_PT_BLK_4_CTX, /* 4-byte BIP packets */
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INTEL_PT_BLK_8_CTX, /* 8-byte BIP packets */
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};
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const char *intel_pt_pkt_name(enum intel_pt_pkt_type);
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int intel_pt_get_packet(const unsigned char *buf, size_t len,
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struct intel_pt_pkt *packet,
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enum intel_pt_pkt_ctx *ctx);
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void intel_pt_upd_pkt_ctx(const struct intel_pt_pkt *packet,
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enum intel_pt_pkt_ctx *ctx);
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int intel_pt_pkt_desc(const struct intel_pt_pkt *packet, char *buf, size_t len);
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#endif
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