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Diffstat (limited to 'tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c')
-rw-r--r--tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c253
1 files changed, 203 insertions, 50 deletions
diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c b/tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c
index d426761a549d..94fb16cf9e0c 100644
--- a/tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c
+++ b/tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c
@@ -1,23 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* intel_pt_pkt_decoder.c: Intel Processor Trace support
* Copyright (c) 2013-2014, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
*/
#include <stdio.h>
#include <string.h>
#include <endian.h>
#include <byteswap.h>
+#include <linux/kernel.h>
#include <linux/compiler.h>
+#include <linux/unaligned.h>
#include "intel-pt-pkt-decoder.h"
@@ -25,20 +18,12 @@
#define BIT63 ((uint64_t)1 << 63)
-#define NR_FLAG BIT63
-
-#if __BYTE_ORDER == __BIG_ENDIAN
-#define le16_to_cpu bswap_16
-#define le32_to_cpu bswap_32
-#define le64_to_cpu bswap_64
+#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
#define memcpy_le64(d, s, n) do { \
memcpy((d), (s), (n)); \
*(d) = le64_to_cpu(*(d)); \
} while (0)
#else
-#define le16_to_cpu
-#define le32_to_cpu
-#define le64_to_cpu
#define memcpy_le64 memcpy
#endif
@@ -71,6 +56,13 @@ static const char * const packet_name[] = {
[INTEL_PT_MWAIT] = "MWAIT",
[INTEL_PT_PWRE] = "PWRE",
[INTEL_PT_PWRX] = "PWRX",
+ [INTEL_PT_BBP] = "BBP",
+ [INTEL_PT_BIP] = "BIP",
+ [INTEL_PT_BEP] = "BEP",
+ [INTEL_PT_BEP_IP] = "BEP",
+ [INTEL_PT_CFE] = "CFE",
+ [INTEL_PT_CFE_IP] = "CFE",
+ [INTEL_PT_EVD] = "EVD",
};
const char *intel_pt_pkt_name(enum intel_pt_pkt_type type)
@@ -87,7 +79,7 @@ static int intel_pt_get_long_tnt(const unsigned char *buf, size_t len,
if (len < 8)
return INTEL_PT_NEED_MORE_BYTES;
- payload = le64_to_cpu(*(uint64_t *)buf);
+ payload = get_unaligned_le64(buf);
for (count = 47; count; count--) {
if (payload & BIT63)
@@ -111,9 +103,7 @@ static int intel_pt_get_pip(const unsigned char *buf, size_t len,
packet->type = INTEL_PT_PIP;
memcpy_le64(&payload, buf + 2, 6);
- packet->payload = payload >> 1;
- if (payload & 1)
- packet->payload |= NR_FLAG;
+ packet->payload = payload;
return 8;
}
@@ -130,26 +120,21 @@ static int intel_pt_get_cbr(const unsigned char *buf, size_t len,
if (len < 4)
return INTEL_PT_NEED_MORE_BYTES;
packet->type = INTEL_PT_CBR;
- packet->payload = le16_to_cpu(*(uint16_t *)(buf + 2));
+ packet->payload = get_unaligned_le16(buf + 2);
return 4;
}
static int intel_pt_get_vmcs(const unsigned char *buf, size_t len,
struct intel_pt_pkt *packet)
{
- unsigned int count = (52 - 5) >> 3;
-
- if (count < 1 || count > 7)
- return INTEL_PT_BAD_PACKET;
-
- if (len < count + 2)
+ if (len < 7)
return INTEL_PT_NEED_MORE_BYTES;
packet->type = INTEL_PT_VMCS;
- packet->count = count;
- memcpy_le64(&packet->payload, buf + 2, count);
+ packet->count = 5;
+ memcpy_le64(&packet->payload, buf + 2, 5);
- return count + 2;
+ return 7;
}
static int intel_pt_get_ovf(struct intel_pt_pkt *packet)
@@ -205,9 +190,8 @@ static int intel_pt_get_mnt(const unsigned char *buf, size_t len,
if (len < 11)
return INTEL_PT_NEED_MORE_BYTES;
packet->type = INTEL_PT_MNT;
- memcpy_le64(&packet->payload, buf + 3, 8);
- return 11
-;
+ packet->payload = get_unaligned_le64(buf + 3);
+ return 11;
}
static int intel_pt_get_3byte(const unsigned char *buf, size_t len,
@@ -235,12 +219,12 @@ static int intel_pt_get_ptwrite(const unsigned char *buf, size_t len,
case 0:
if (len < 6)
return INTEL_PT_NEED_MORE_BYTES;
- packet->payload = le32_to_cpu(*(uint32_t *)(buf + 2));
+ packet->payload = get_unaligned_le32(buf + 2);
return 6;
case 1:
if (len < 10)
return INTEL_PT_NEED_MORE_BYTES;
- packet->payload = le64_to_cpu(*(uint64_t *)(buf + 2));
+ packet->payload = get_unaligned_le64(buf + 2);
return 10;
default:
return INTEL_PT_BAD_PACKET;
@@ -265,7 +249,7 @@ static int intel_pt_get_mwait(const unsigned char *buf, size_t len,
if (len < 10)
return INTEL_PT_NEED_MORE_BYTES;
packet->type = INTEL_PT_MWAIT;
- packet->payload = le64_to_cpu(*(uint64_t *)(buf + 2));
+ packet->payload = get_unaligned_le64(buf + 2);
return 10;
}
@@ -289,6 +273,78 @@ static int intel_pt_get_pwrx(const unsigned char *buf, size_t len,
return 7;
}
+static int intel_pt_get_bbp(const unsigned char *buf, size_t len,
+ struct intel_pt_pkt *packet)
+{
+ if (len < 3)
+ return INTEL_PT_NEED_MORE_BYTES;
+ packet->type = INTEL_PT_BBP;
+ packet->count = buf[2] >> 7;
+ packet->payload = buf[2] & 0x1f;
+ return 3;
+}
+
+static int intel_pt_get_bip_4(const unsigned char *buf, size_t len,
+ struct intel_pt_pkt *packet)
+{
+ if (len < 5)
+ return INTEL_PT_NEED_MORE_BYTES;
+ packet->type = INTEL_PT_BIP;
+ packet->count = buf[0] >> 3;
+ memcpy_le64(&packet->payload, buf + 1, 4);
+ return 5;
+}
+
+static int intel_pt_get_bip_8(const unsigned char *buf, size_t len,
+ struct intel_pt_pkt *packet)
+{
+ if (len < 9)
+ return INTEL_PT_NEED_MORE_BYTES;
+ packet->type = INTEL_PT_BIP;
+ packet->count = buf[0] >> 3;
+ packet->payload = get_unaligned_le64(buf + 1);
+ return 9;
+}
+
+static int intel_pt_get_bep(size_t len, struct intel_pt_pkt *packet)
+{
+ if (len < 2)
+ return INTEL_PT_NEED_MORE_BYTES;
+ packet->type = INTEL_PT_BEP;
+ return 2;
+}
+
+static int intel_pt_get_bep_ip(size_t len, struct intel_pt_pkt *packet)
+{
+ if (len < 2)
+ return INTEL_PT_NEED_MORE_BYTES;
+ packet->type = INTEL_PT_BEP_IP;
+ return 2;
+}
+
+static int intel_pt_get_cfe(const unsigned char *buf, size_t len,
+ struct intel_pt_pkt *packet)
+{
+ if (len < 4)
+ return INTEL_PT_NEED_MORE_BYTES;
+ packet->type = buf[2] & 0x80 ? INTEL_PT_CFE_IP : INTEL_PT_CFE;
+ packet->count = buf[2] & 0x1f;
+ packet->payload = buf[3];
+ return 4;
+}
+
+static int intel_pt_get_evd(const unsigned char *buf, size_t len,
+ struct intel_pt_pkt *packet)
+{
+ if (len < 11)
+ return INTEL_PT_NEED_MORE_BYTES;
+ packet->type = INTEL_PT_EVD;
+ packet->count = buf[2] & 0x3f;
+ packet->payload = buf[3];
+ packet->payload = get_unaligned_le64(buf + 3);
+ return 11;
+}
+
static int intel_pt_get_ext(const unsigned char *buf, size_t len,
struct intel_pt_pkt *packet)
{
@@ -329,6 +385,16 @@ static int intel_pt_get_ext(const unsigned char *buf, size_t len,
return intel_pt_get_pwre(buf, len, packet);
case 0xA2: /* PWRX */
return intel_pt_get_pwrx(buf, len, packet);
+ case 0x63: /* BBP */
+ return intel_pt_get_bbp(buf, len, packet);
+ case 0x33: /* BEP no IP */
+ return intel_pt_get_bep(len, packet);
+ case 0xb3: /* BEP with IP */
+ return intel_pt_get_bep_ip(len, packet);
+ case 0x13: /* CFE */
+ return intel_pt_get_cfe(buf, len, packet);
+ case 0x53: /* EVD */
+ return intel_pt_get_evd(buf, len, packet);
default:
return INTEL_PT_BAD_PACKET;
}
@@ -390,13 +456,13 @@ static int intel_pt_get_ip(enum intel_pt_pkt_type type, unsigned int byte,
if (len < 3)
return INTEL_PT_NEED_MORE_BYTES;
ip_len = 2;
- packet->payload = le16_to_cpu(*(uint16_t *)(buf + 1));
+ packet->payload = get_unaligned_le16(buf + 1);
break;
case 2:
if (len < 5)
return INTEL_PT_NEED_MORE_BYTES;
ip_len = 4;
- packet->payload = le32_to_cpu(*(uint32_t *)(buf + 1));
+ packet->payload = get_unaligned_le32(buf + 1);
break;
case 3:
case 4:
@@ -409,7 +475,7 @@ static int intel_pt_get_ip(enum intel_pt_pkt_type type, unsigned int byte,
if (len < 9)
return INTEL_PT_NEED_MORE_BYTES;
ip_len = 8;
- packet->payload = le64_to_cpu(*(uint64_t *)(buf + 1));
+ packet->payload = get_unaligned_le64(buf + 1);
break;
default:
return INTEL_PT_BAD_PACKET;
@@ -429,6 +495,7 @@ static int intel_pt_get_mode(const unsigned char *buf, size_t len,
switch (buf[1] >> 5) {
case 0:
packet->type = INTEL_PT_MODE_EXEC;
+ packet->count = buf[1];
switch (buf[1] & 3) {
case 0:
packet->payload = 16;
@@ -477,7 +544,8 @@ static int intel_pt_get_mtc(const unsigned char *buf, size_t len,
}
static int intel_pt_do_get_packet(const unsigned char *buf, size_t len,
- struct intel_pt_pkt *packet)
+ struct intel_pt_pkt *packet,
+ enum intel_pt_pkt_ctx ctx)
{
unsigned int byte;
@@ -487,6 +555,22 @@ static int intel_pt_do_get_packet(const unsigned char *buf, size_t len,
return INTEL_PT_NEED_MORE_BYTES;
byte = buf[0];
+
+ switch (ctx) {
+ case INTEL_PT_NO_CTX:
+ break;
+ case INTEL_PT_BLK_4_CTX:
+ if ((byte & 0x7) == 4)
+ return intel_pt_get_bip_4(buf, len, packet);
+ break;
+ case INTEL_PT_BLK_8_CTX:
+ if ((byte & 0x7) == 4)
+ return intel_pt_get_bip_8(buf, len, packet);
+ break;
+ default:
+ break;
+ }
+
if (!(byte & BIT(0))) {
if (byte == 0)
return intel_pt_get_pad(packet);
@@ -525,15 +609,68 @@ static int intel_pt_do_get_packet(const unsigned char *buf, size_t len,
}
}
+void intel_pt_upd_pkt_ctx(const struct intel_pt_pkt *packet,
+ enum intel_pt_pkt_ctx *ctx)
+{
+ switch (packet->type) {
+ case INTEL_PT_BAD:
+ case INTEL_PT_PAD:
+ case INTEL_PT_TSC:
+ case INTEL_PT_TMA:
+ case INTEL_PT_MTC:
+ case INTEL_PT_FUP:
+ case INTEL_PT_CYC:
+ case INTEL_PT_CBR:
+ case INTEL_PT_MNT:
+ case INTEL_PT_EXSTOP:
+ case INTEL_PT_EXSTOP_IP:
+ case INTEL_PT_PWRE:
+ case INTEL_PT_PWRX:
+ case INTEL_PT_BIP:
+ break;
+ case INTEL_PT_TNT:
+ case INTEL_PT_TIP:
+ case INTEL_PT_TIP_PGD:
+ case INTEL_PT_TIP_PGE:
+ case INTEL_PT_MODE_EXEC:
+ case INTEL_PT_MODE_TSX:
+ case INTEL_PT_PIP:
+ case INTEL_PT_OVF:
+ case INTEL_PT_VMCS:
+ case INTEL_PT_TRACESTOP:
+ case INTEL_PT_PSB:
+ case INTEL_PT_PSBEND:
+ case INTEL_PT_PTWRITE:
+ case INTEL_PT_PTWRITE_IP:
+ case INTEL_PT_MWAIT:
+ case INTEL_PT_BEP:
+ case INTEL_PT_BEP_IP:
+ case INTEL_PT_CFE:
+ case INTEL_PT_CFE_IP:
+ case INTEL_PT_EVD:
+ *ctx = INTEL_PT_NO_CTX;
+ break;
+ case INTEL_PT_BBP:
+ if (packet->count)
+ *ctx = INTEL_PT_BLK_4_CTX;
+ else
+ *ctx = INTEL_PT_BLK_8_CTX;
+ break;
+ default:
+ break;
+ }
+}
+
int intel_pt_get_packet(const unsigned char *buf, size_t len,
- struct intel_pt_pkt *packet)
+ struct intel_pt_pkt *packet, enum intel_pt_pkt_ctx *ctx)
{
int ret;
- ret = intel_pt_do_get_packet(buf, len, packet);
+ ret = intel_pt_do_get_packet(buf, len, packet, *ctx);
if (ret > 0) {
while (ret < 8 && len > (size_t)ret && !buf[ret])
ret += 1;
+ intel_pt_upd_pkt_ctx(packet, ctx);
}
return ret;
}
@@ -584,7 +721,7 @@ int intel_pt_pkt_desc(const struct intel_pt_pkt *packet, char *buf,
case INTEL_PT_FUP:
if (!(packet->count))
return snprintf(buf, buf_len, "%s no ip", name);
- __fallthrough;
+ fallthrough;
case INTEL_PT_CYC:
case INTEL_PT_VMCS:
case INTEL_PT_MTC:
@@ -596,23 +733,26 @@ int intel_pt_pkt_desc(const struct intel_pt_pkt *packet, char *buf,
return snprintf(buf, buf_len, "%s CTC 0x%x FC 0x%x", name,
(unsigned)payload, packet->count);
case INTEL_PT_MODE_EXEC:
- return snprintf(buf, buf_len, "%s %lld", name, payload);
+ return snprintf(buf, buf_len, "%s IF:%d %lld",
+ name, !!(packet->count & 4), payload);
case INTEL_PT_MODE_TSX:
return snprintf(buf, buf_len, "%s TXAbort:%u InTX:%u",
name, (unsigned)(payload >> 1) & 1,
(unsigned)payload & 1);
case INTEL_PT_PIP:
- nr = packet->payload & NR_FLAG ? 1 : 0;
- payload &= ~NR_FLAG;
+ nr = packet->payload & INTEL_PT_VMX_NR_FLAG ? 1 : 0;
+ payload &= ~INTEL_PT_VMX_NR_FLAG;
ret = snprintf(buf, buf_len, "%s 0x%llx (NR=%d)",
- name, payload, nr);
+ name, payload >> 1, nr);
return ret;
case INTEL_PT_PTWRITE:
return snprintf(buf, buf_len, "%s 0x%llx IP:0", name, payload);
case INTEL_PT_PTWRITE_IP:
return snprintf(buf, buf_len, "%s 0x%llx IP:1", name, payload);
+ case INTEL_PT_BEP:
case INTEL_PT_EXSTOP:
return snprintf(buf, buf_len, "%s IP:0", name);
+ case INTEL_PT_BEP_IP:
case INTEL_PT_EXSTOP_IP:
return snprintf(buf, buf_len, "%s IP:1", name);
case INTEL_PT_MWAIT:
@@ -630,6 +770,19 @@ int intel_pt_pkt_desc(const struct intel_pt_pkt *packet, char *buf,
(unsigned int)((payload >> 4) & 0xf),
(unsigned int)(payload & 0xf),
(unsigned int)((payload >> 8) & 0xf));
+ case INTEL_PT_BBP:
+ return snprintf(buf, buf_len, "%s SZ %s-byte Type 0x%llx",
+ name, packet->count ? "4" : "8", payload);
+ case INTEL_PT_BIP:
+ return snprintf(buf, buf_len, "%s ID 0x%02x Value 0x%llx",
+ name, packet->count, payload);
+ case INTEL_PT_CFE:
+ case INTEL_PT_CFE_IP:
+ return snprintf(buf, buf_len, "%s IP:%d Type 0x%02x Vector 0x%llx",
+ name, packet->type == INTEL_PT_CFE_IP, packet->count, payload);
+ case INTEL_PT_EVD:
+ return snprintf(buf, buf_len, "%s Type 0x%02x Payload 0x%llx",
+ name, packet->count, payload);
default:
break;
}
generated by cgit (git 2.34.1) at 2025-12-25 11:15:18 +0000