^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * intel_pt_pkt_decoder.c: Intel Processor Trace support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (c) 2013-2014, Intel Corporation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <stdio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <endian.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <byteswap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/compiler.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include "intel-pt-pkt-decoder.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #define BIT(n) (1 << (n))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #define BIT63 ((uint64_t)1 << 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define NR_FLAG BIT63
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #if __BYTE_ORDER == __BIG_ENDIAN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define le16_to_cpu bswap_16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define le32_to_cpu bswap_32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define le64_to_cpu bswap_64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define memcpy_le64(d, s, n) do { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) memcpy((d), (s), (n)); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) *(d) = le64_to_cpu(*(d)); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define le16_to_cpu
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define le32_to_cpu
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define le64_to_cpu
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define memcpy_le64 memcpy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) static const char * const packet_name[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) [INTEL_PT_BAD] = "Bad Packet!",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) [INTEL_PT_PAD] = "PAD",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) [INTEL_PT_TNT] = "TNT",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) [INTEL_PT_TIP_PGD] = "TIP.PGD",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) [INTEL_PT_TIP_PGE] = "TIP.PGE",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) [INTEL_PT_TSC] = "TSC",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) [INTEL_PT_TMA] = "TMA",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) [INTEL_PT_MODE_EXEC] = "MODE.Exec",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) [INTEL_PT_MODE_TSX] = "MODE.TSX",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) [INTEL_PT_MTC] = "MTC",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) [INTEL_PT_TIP] = "TIP",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) [INTEL_PT_FUP] = "FUP",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) [INTEL_PT_CYC] = "CYC",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) [INTEL_PT_VMCS] = "VMCS",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) [INTEL_PT_PSB] = "PSB",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) [INTEL_PT_PSBEND] = "PSBEND",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) [INTEL_PT_CBR] = "CBR",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) [INTEL_PT_TRACESTOP] = "TraceSTOP",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) [INTEL_PT_PIP] = "PIP",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) [INTEL_PT_OVF] = "OVF",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) [INTEL_PT_MNT] = "MNT",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) [INTEL_PT_PTWRITE] = "PTWRITE",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) [INTEL_PT_PTWRITE_IP] = "PTWRITE",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) [INTEL_PT_EXSTOP] = "EXSTOP",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) [INTEL_PT_EXSTOP_IP] = "EXSTOP",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) [INTEL_PT_MWAIT] = "MWAIT",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) [INTEL_PT_PWRE] = "PWRE",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) [INTEL_PT_PWRX] = "PWRX",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) [INTEL_PT_BBP] = "BBP",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) [INTEL_PT_BIP] = "BIP",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) [INTEL_PT_BEP] = "BEP",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) [INTEL_PT_BEP_IP] = "BEP",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) const char *intel_pt_pkt_name(enum intel_pt_pkt_type type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) return packet_name[type];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) static int intel_pt_get_long_tnt(const unsigned char *buf, size_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) struct intel_pt_pkt *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) uint64_t payload;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) int count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) if (len < 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) return INTEL_PT_NEED_MORE_BYTES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) payload = le64_to_cpu(*(uint64_t *)buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) for (count = 47; count; count--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) if (payload & BIT63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) payload <<= 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) packet->type = INTEL_PT_TNT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) packet->count = count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) packet->payload = payload << 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) return 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) static int intel_pt_get_pip(const unsigned char *buf, size_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) struct intel_pt_pkt *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) uint64_t payload = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) if (len < 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) return INTEL_PT_NEED_MORE_BYTES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) packet->type = INTEL_PT_PIP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) memcpy_le64(&payload, buf + 2, 6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) packet->payload = payload >> 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) if (payload & 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) packet->payload |= NR_FLAG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) return 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) static int intel_pt_get_tracestop(struct intel_pt_pkt *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) packet->type = INTEL_PT_TRACESTOP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) return 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) static int intel_pt_get_cbr(const unsigned char *buf, size_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) struct intel_pt_pkt *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) if (len < 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) return INTEL_PT_NEED_MORE_BYTES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) packet->type = INTEL_PT_CBR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) packet->payload = le16_to_cpu(*(uint16_t *)(buf + 2));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) return 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) static int intel_pt_get_vmcs(const unsigned char *buf, size_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) struct intel_pt_pkt *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) unsigned int count = (52 - 5) >> 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) if (count < 1 || count > 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) return INTEL_PT_BAD_PACKET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) if (len < count + 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) return INTEL_PT_NEED_MORE_BYTES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) packet->type = INTEL_PT_VMCS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) packet->count = count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) memcpy_le64(&packet->payload, buf + 2, count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) return count + 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) static int intel_pt_get_ovf(struct intel_pt_pkt *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) packet->type = INTEL_PT_OVF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) return 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) static int intel_pt_get_psb(const unsigned char *buf, size_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) struct intel_pt_pkt *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) if (len < 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) return INTEL_PT_NEED_MORE_BYTES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) for (i = 2; i < 16; i += 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) if (buf[i] != 2 || buf[i + 1] != 0x82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) return INTEL_PT_BAD_PACKET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) packet->type = INTEL_PT_PSB;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) return 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) static int intel_pt_get_psbend(struct intel_pt_pkt *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) packet->type = INTEL_PT_PSBEND;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) return 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) static int intel_pt_get_tma(const unsigned char *buf, size_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) struct intel_pt_pkt *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) if (len < 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) return INTEL_PT_NEED_MORE_BYTES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) packet->type = INTEL_PT_TMA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) packet->payload = buf[2] | (buf[3] << 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) packet->count = buf[5] | ((buf[6] & BIT(0)) << 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) return 7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) static int intel_pt_get_pad(struct intel_pt_pkt *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) packet->type = INTEL_PT_PAD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) static int intel_pt_get_mnt(const unsigned char *buf, size_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) struct intel_pt_pkt *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) if (len < 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) return INTEL_PT_NEED_MORE_BYTES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) packet->type = INTEL_PT_MNT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) memcpy_le64(&packet->payload, buf + 3, 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) return 11
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) static int intel_pt_get_3byte(const unsigned char *buf, size_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) struct intel_pt_pkt *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) if (len < 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) return INTEL_PT_NEED_MORE_BYTES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) switch (buf[2]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) case 0x88: /* MNT */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) return intel_pt_get_mnt(buf, len, packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) return INTEL_PT_BAD_PACKET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) static int intel_pt_get_ptwrite(const unsigned char *buf, size_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) struct intel_pt_pkt *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) packet->count = (buf[1] >> 5) & 0x3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) packet->type = buf[1] & BIT(7) ? INTEL_PT_PTWRITE_IP :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) INTEL_PT_PTWRITE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) switch (packet->count) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) if (len < 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) return INTEL_PT_NEED_MORE_BYTES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) packet->payload = le32_to_cpu(*(uint32_t *)(buf + 2));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) return 6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) if (len < 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) return INTEL_PT_NEED_MORE_BYTES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) packet->payload = le64_to_cpu(*(uint64_t *)(buf + 2));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) return 10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) return INTEL_PT_BAD_PACKET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) static int intel_pt_get_exstop(struct intel_pt_pkt *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) packet->type = INTEL_PT_EXSTOP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) return 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) static int intel_pt_get_exstop_ip(struct intel_pt_pkt *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) packet->type = INTEL_PT_EXSTOP_IP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) return 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) static int intel_pt_get_mwait(const unsigned char *buf, size_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) struct intel_pt_pkt *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) if (len < 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) return INTEL_PT_NEED_MORE_BYTES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) packet->type = INTEL_PT_MWAIT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) packet->payload = le64_to_cpu(*(uint64_t *)(buf + 2));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) return 10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) static int intel_pt_get_pwre(const unsigned char *buf, size_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) struct intel_pt_pkt *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) if (len < 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) return INTEL_PT_NEED_MORE_BYTES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) packet->type = INTEL_PT_PWRE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) memcpy_le64(&packet->payload, buf + 2, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) return 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) static int intel_pt_get_pwrx(const unsigned char *buf, size_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) struct intel_pt_pkt *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) if (len < 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) return INTEL_PT_NEED_MORE_BYTES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) packet->type = INTEL_PT_PWRX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) memcpy_le64(&packet->payload, buf + 2, 5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) return 7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) static int intel_pt_get_bbp(const unsigned char *buf, size_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) struct intel_pt_pkt *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) if (len < 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) return INTEL_PT_NEED_MORE_BYTES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) packet->type = INTEL_PT_BBP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) packet->count = buf[2] >> 7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) packet->payload = buf[2] & 0x1f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) return 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) static int intel_pt_get_bip_4(const unsigned char *buf, size_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) struct intel_pt_pkt *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) if (len < 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) return INTEL_PT_NEED_MORE_BYTES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) packet->type = INTEL_PT_BIP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) packet->count = buf[0] >> 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) memcpy_le64(&packet->payload, buf + 1, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) return 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) static int intel_pt_get_bip_8(const unsigned char *buf, size_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) struct intel_pt_pkt *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) if (len < 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) return INTEL_PT_NEED_MORE_BYTES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) packet->type = INTEL_PT_BIP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) packet->count = buf[0] >> 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) memcpy_le64(&packet->payload, buf + 1, 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) return 9;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) static int intel_pt_get_bep(size_t len, struct intel_pt_pkt *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) if (len < 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) return INTEL_PT_NEED_MORE_BYTES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) packet->type = INTEL_PT_BEP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) return 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) static int intel_pt_get_bep_ip(size_t len, struct intel_pt_pkt *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) if (len < 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) return INTEL_PT_NEED_MORE_BYTES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) packet->type = INTEL_PT_BEP_IP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) return 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) static int intel_pt_get_ext(const unsigned char *buf, size_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) struct intel_pt_pkt *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) if (len < 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) return INTEL_PT_NEED_MORE_BYTES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) if ((buf[1] & 0x1f) == 0x12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) return intel_pt_get_ptwrite(buf, len, packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) switch (buf[1]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) case 0xa3: /* Long TNT */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) return intel_pt_get_long_tnt(buf, len, packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) case 0x43: /* PIP */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) return intel_pt_get_pip(buf, len, packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) case 0x83: /* TraceStop */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) return intel_pt_get_tracestop(packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) case 0x03: /* CBR */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) return intel_pt_get_cbr(buf, len, packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) case 0xc8: /* VMCS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) return intel_pt_get_vmcs(buf, len, packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) case 0xf3: /* OVF */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) return intel_pt_get_ovf(packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) case 0x82: /* PSB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) return intel_pt_get_psb(buf, len, packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) case 0x23: /* PSBEND */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) return intel_pt_get_psbend(packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) case 0x73: /* TMA */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) return intel_pt_get_tma(buf, len, packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) case 0xC3: /* 3-byte header */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) return intel_pt_get_3byte(buf, len, packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) case 0x62: /* EXSTOP no IP */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) return intel_pt_get_exstop(packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) case 0xE2: /* EXSTOP with IP */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) return intel_pt_get_exstop_ip(packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) case 0xC2: /* MWAIT */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) return intel_pt_get_mwait(buf, len, packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) case 0x22: /* PWRE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) return intel_pt_get_pwre(buf, len, packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) case 0xA2: /* PWRX */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) return intel_pt_get_pwrx(buf, len, packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) case 0x63: /* BBP */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) return intel_pt_get_bbp(buf, len, packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) case 0x33: /* BEP no IP */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) return intel_pt_get_bep(len, packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) case 0xb3: /* BEP with IP */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) return intel_pt_get_bep_ip(len, packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) return INTEL_PT_BAD_PACKET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) static int intel_pt_get_short_tnt(unsigned int byte,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) struct intel_pt_pkt *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) int count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) for (count = 6; count; count--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) if (byte & BIT(7))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) byte <<= 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) packet->type = INTEL_PT_TNT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) packet->count = count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) packet->payload = (uint64_t)byte << 57;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) static int intel_pt_get_cyc(unsigned int byte, const unsigned char *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) size_t len, struct intel_pt_pkt *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) unsigned int offs = 1, shift;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) uint64_t payload = byte >> 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) byte >>= 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) len -= 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) for (shift = 5; byte & 1; shift += 7) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) if (offs > 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) return INTEL_PT_BAD_PACKET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) if (len < offs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) return INTEL_PT_NEED_MORE_BYTES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) byte = buf[offs++];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) payload |= ((uint64_t)byte >> 1) << shift;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) packet->type = INTEL_PT_CYC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) packet->payload = payload;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) return offs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) static int intel_pt_get_ip(enum intel_pt_pkt_type type, unsigned int byte,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) const unsigned char *buf, size_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) struct intel_pt_pkt *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) int ip_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) packet->count = byte >> 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) switch (packet->count) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) ip_len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) if (len < 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) return INTEL_PT_NEED_MORE_BYTES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) ip_len = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) packet->payload = le16_to_cpu(*(uint16_t *)(buf + 1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) case 2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) if (len < 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) return INTEL_PT_NEED_MORE_BYTES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) ip_len = 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) packet->payload = le32_to_cpu(*(uint32_t *)(buf + 1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) case 3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) case 4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) if (len < 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) return INTEL_PT_NEED_MORE_BYTES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) ip_len = 6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) memcpy_le64(&packet->payload, buf + 1, 6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) case 6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) if (len < 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) return INTEL_PT_NEED_MORE_BYTES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) ip_len = 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) packet->payload = le64_to_cpu(*(uint64_t *)(buf + 1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) return INTEL_PT_BAD_PACKET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) packet->type = type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) return ip_len + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) static int intel_pt_get_mode(const unsigned char *buf, size_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) struct intel_pt_pkt *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) if (len < 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) return INTEL_PT_NEED_MORE_BYTES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) switch (buf[1] >> 5) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) packet->type = INTEL_PT_MODE_EXEC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) switch (buf[1] & 3) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) packet->payload = 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) packet->payload = 64;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) case 2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) packet->payload = 32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) return INTEL_PT_BAD_PACKET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) packet->type = INTEL_PT_MODE_TSX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) if ((buf[1] & 3) == 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) return INTEL_PT_BAD_PACKET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) packet->payload = buf[1] & 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) return INTEL_PT_BAD_PACKET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) return 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) static int intel_pt_get_tsc(const unsigned char *buf, size_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) struct intel_pt_pkt *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) if (len < 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) return INTEL_PT_NEED_MORE_BYTES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) packet->type = INTEL_PT_TSC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) memcpy_le64(&packet->payload, buf + 1, 7);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) return 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) static int intel_pt_get_mtc(const unsigned char *buf, size_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) struct intel_pt_pkt *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) if (len < 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) return INTEL_PT_NEED_MORE_BYTES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) packet->type = INTEL_PT_MTC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) packet->payload = buf[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) return 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) static int intel_pt_do_get_packet(const unsigned char *buf, size_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) struct intel_pt_pkt *packet,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) enum intel_pt_pkt_ctx ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) unsigned int byte;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) memset(packet, 0, sizeof(struct intel_pt_pkt));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) if (!len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) return INTEL_PT_NEED_MORE_BYTES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) byte = buf[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) switch (ctx) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) case INTEL_PT_NO_CTX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) case INTEL_PT_BLK_4_CTX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) if ((byte & 0x7) == 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) return intel_pt_get_bip_4(buf, len, packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) case INTEL_PT_BLK_8_CTX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) if ((byte & 0x7) == 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) return intel_pt_get_bip_8(buf, len, packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) if (!(byte & BIT(0))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) if (byte == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) return intel_pt_get_pad(packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) if (byte == 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) return intel_pt_get_ext(buf, len, packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) return intel_pt_get_short_tnt(byte, packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) if ((byte & 2))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) return intel_pt_get_cyc(byte, buf, len, packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) switch (byte & 0x1f) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) case 0x0D:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) return intel_pt_get_ip(INTEL_PT_TIP, byte, buf, len, packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) case 0x11:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) return intel_pt_get_ip(INTEL_PT_TIP_PGE, byte, buf, len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) case 0x01:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) return intel_pt_get_ip(INTEL_PT_TIP_PGD, byte, buf, len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) case 0x1D:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) return intel_pt_get_ip(INTEL_PT_FUP, byte, buf, len, packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) case 0x19:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) switch (byte) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) case 0x99:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) return intel_pt_get_mode(buf, len, packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) case 0x19:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) return intel_pt_get_tsc(buf, len, packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) case 0x59:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) return intel_pt_get_mtc(buf, len, packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) return INTEL_PT_BAD_PACKET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) return INTEL_PT_BAD_PACKET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) void intel_pt_upd_pkt_ctx(const struct intel_pt_pkt *packet,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) enum intel_pt_pkt_ctx *ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) switch (packet->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) case INTEL_PT_BAD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) case INTEL_PT_PAD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) case INTEL_PT_TSC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) case INTEL_PT_TMA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) case INTEL_PT_MTC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) case INTEL_PT_FUP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) case INTEL_PT_CYC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) case INTEL_PT_CBR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) case INTEL_PT_MNT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) case INTEL_PT_EXSTOP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) case INTEL_PT_EXSTOP_IP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) case INTEL_PT_PWRE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) case INTEL_PT_PWRX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) case INTEL_PT_BIP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) case INTEL_PT_TNT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) case INTEL_PT_TIP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) case INTEL_PT_TIP_PGD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) case INTEL_PT_TIP_PGE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) case INTEL_PT_MODE_EXEC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) case INTEL_PT_MODE_TSX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) case INTEL_PT_PIP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) case INTEL_PT_OVF:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) case INTEL_PT_VMCS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) case INTEL_PT_TRACESTOP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) case INTEL_PT_PSB:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) case INTEL_PT_PSBEND:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) case INTEL_PT_PTWRITE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) case INTEL_PT_PTWRITE_IP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) case INTEL_PT_MWAIT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) case INTEL_PT_BEP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) case INTEL_PT_BEP_IP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) *ctx = INTEL_PT_NO_CTX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) case INTEL_PT_BBP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) if (packet->count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) *ctx = INTEL_PT_BLK_4_CTX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) *ctx = INTEL_PT_BLK_8_CTX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) int intel_pt_get_packet(const unsigned char *buf, size_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) struct intel_pt_pkt *packet, enum intel_pt_pkt_ctx *ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) ret = intel_pt_do_get_packet(buf, len, packet, *ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) if (ret > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) while (ret < 8 && len > (size_t)ret && !buf[ret])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) ret += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) intel_pt_upd_pkt_ctx(packet, ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) int intel_pt_pkt_desc(const struct intel_pt_pkt *packet, char *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) size_t buf_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) int ret, i, nr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) unsigned long long payload = packet->payload;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) const char *name = intel_pt_pkt_name(packet->type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) switch (packet->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) case INTEL_PT_BAD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) case INTEL_PT_PAD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) case INTEL_PT_PSB:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) case INTEL_PT_PSBEND:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) case INTEL_PT_TRACESTOP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) case INTEL_PT_OVF:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) return snprintf(buf, buf_len, "%s", name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) case INTEL_PT_TNT: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) size_t blen = buf_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) ret = snprintf(buf, blen, "%s ", name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) buf += ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) blen -= ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) for (i = 0; i < packet->count; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) if (payload & BIT63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) ret = snprintf(buf, blen, "T");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) ret = snprintf(buf, blen, "N");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) buf += ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) blen -= ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) payload <<= 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) ret = snprintf(buf, blen, " (%d)", packet->count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) blen -= ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) return buf_len - blen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) case INTEL_PT_TIP_PGD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) case INTEL_PT_TIP_PGE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) case INTEL_PT_TIP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) case INTEL_PT_FUP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) if (!(packet->count))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) return snprintf(buf, buf_len, "%s no ip", name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) __fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) case INTEL_PT_CYC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) case INTEL_PT_VMCS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) case INTEL_PT_MTC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) case INTEL_PT_MNT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) case INTEL_PT_CBR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) case INTEL_PT_TSC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) return snprintf(buf, buf_len, "%s 0x%llx", name, payload);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) case INTEL_PT_TMA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) return snprintf(buf, buf_len, "%s CTC 0x%x FC 0x%x", name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) (unsigned)payload, packet->count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) case INTEL_PT_MODE_EXEC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) return snprintf(buf, buf_len, "%s %lld", name, payload);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) case INTEL_PT_MODE_TSX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) return snprintf(buf, buf_len, "%s TXAbort:%u InTX:%u",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) name, (unsigned)(payload >> 1) & 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) (unsigned)payload & 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) case INTEL_PT_PIP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) nr = packet->payload & NR_FLAG ? 1 : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) payload &= ~NR_FLAG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) ret = snprintf(buf, buf_len, "%s 0x%llx (NR=%d)",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) name, payload, nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) case INTEL_PT_PTWRITE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) return snprintf(buf, buf_len, "%s 0x%llx IP:0", name, payload);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) case INTEL_PT_PTWRITE_IP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) return snprintf(buf, buf_len, "%s 0x%llx IP:1", name, payload);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) case INTEL_PT_BEP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) case INTEL_PT_EXSTOP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) return snprintf(buf, buf_len, "%s IP:0", name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) case INTEL_PT_BEP_IP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) case INTEL_PT_EXSTOP_IP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) return snprintf(buf, buf_len, "%s IP:1", name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) case INTEL_PT_MWAIT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) return snprintf(buf, buf_len, "%s 0x%llx Hints 0x%x Extensions 0x%x",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) name, payload, (unsigned int)(payload & 0xff),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) (unsigned int)((payload >> 32) & 0x3));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) case INTEL_PT_PWRE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) return snprintf(buf, buf_len, "%s 0x%llx HW:%u CState:%u Sub-CState:%u",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) name, payload, !!(payload & 0x80),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) (unsigned int)((payload >> 12) & 0xf),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) (unsigned int)((payload >> 8) & 0xf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) case INTEL_PT_PWRX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) return snprintf(buf, buf_len, "%s 0x%llx Last CState:%u Deepest CState:%u Wake Reason 0x%x",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) name, payload,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) (unsigned int)((payload >> 4) & 0xf),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) (unsigned int)(payload & 0xf),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) (unsigned int)((payload >> 8) & 0xf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) case INTEL_PT_BBP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) return snprintf(buf, buf_len, "%s SZ %s-byte Type 0x%llx",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) name, packet->count ? "4" : "8", payload);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) case INTEL_PT_BIP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) return snprintf(buf, buf_len, "%s ID 0x%02x Value 0x%llx",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) name, packet->count, payload);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) return snprintf(buf, buf_len, "%s 0x%llx (%d)",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) name, payload, packet->count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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