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