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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * intel_pt_pkt_decoder.h: Intel Processor Trace support4 * Copyright (c) 2013-2014, Intel Corporation.5 */6 7#ifndef INCLUDE__INTEL_PT_PKT_DECODER_H__8#define INCLUDE__INTEL_PT_PKT_DECODER_H__9 10#include <stddef.h>11#include <stdint.h>12 13#define INTEL_PT_PKT_DESC_MAX 25614 15#define INTEL_PT_NEED_MORE_BYTES -116#define INTEL_PT_BAD_PACKET -217 18#define INTEL_PT_PSB_STR "\002\202\002\202\002\202\002\202" \19 "\002\202\002\202\002\202\002\202"20#define INTEL_PT_PSB_LEN 1621 22#define INTEL_PT_PKT_MAX_SZ 1623 24#define INTEL_PT_VMX_NR_FLAG 125 26enum intel_pt_pkt_type {27 INTEL_PT_BAD,28 INTEL_PT_PAD,29 INTEL_PT_TNT,30 INTEL_PT_TIP_PGD,31 INTEL_PT_TIP_PGE,32 INTEL_PT_TSC,33 INTEL_PT_TMA,34 INTEL_PT_MODE_EXEC,35 INTEL_PT_MODE_TSX,36 INTEL_PT_MTC,37 INTEL_PT_TIP,38 INTEL_PT_FUP,39 INTEL_PT_CYC,40 INTEL_PT_VMCS,41 INTEL_PT_PSB,42 INTEL_PT_PSBEND,43 INTEL_PT_CBR,44 INTEL_PT_TRACESTOP,45 INTEL_PT_PIP,46 INTEL_PT_OVF,47 INTEL_PT_MNT,48 INTEL_PT_PTWRITE,49 INTEL_PT_PTWRITE_IP,50 INTEL_PT_EXSTOP,51 INTEL_PT_EXSTOP_IP,52 INTEL_PT_MWAIT,53 INTEL_PT_PWRE,54 INTEL_PT_PWRX,55 INTEL_PT_BBP,56 INTEL_PT_BIP,57 INTEL_PT_BEP,58 INTEL_PT_BEP_IP,59 INTEL_PT_CFE,60 INTEL_PT_CFE_IP,61 INTEL_PT_EVD,62};63 64struct intel_pt_pkt {65 enum intel_pt_pkt_type type;66 int count;67 uint64_t payload;68};69 70/*71 * Decoding of BIP packets conflicts with single-byte TNT packets. Since BIP72 * packets only occur in the context of a block (i.e. between BBP and BEP), that73 * context must be recorded and passed to the packet decoder.74 */75enum intel_pt_pkt_ctx {76 INTEL_PT_NO_CTX, /* BIP packets are invalid */77 INTEL_PT_BLK_4_CTX, /* 4-byte BIP packets */78 INTEL_PT_BLK_8_CTX, /* 8-byte BIP packets */79};80 81const char *intel_pt_pkt_name(enum intel_pt_pkt_type);82 83int intel_pt_get_packet(const unsigned char *buf, size_t len,84 struct intel_pt_pkt *packet,85 enum intel_pt_pkt_ctx *ctx);86 87void intel_pt_upd_pkt_ctx(const struct intel_pt_pkt *packet,88 enum intel_pt_pkt_ctx *ctx);89 90int intel_pt_pkt_desc(const struct intel_pt_pkt *packet, char *buf, size_t len);91 92#endif93