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-rw-r--r--tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c104
1 files changed, 66 insertions, 38 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 4ce109993e74..bccb988a7a44 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
@@ -8,7 +8,9 @@
#include <string.h>
#include <endian.h>
#include <byteswap.h>
+#include <linux/kernel.h>
#include <linux/compiler.h>
+#include <asm-generic/unaligned.h>
#include "intel-pt-pkt-decoder.h"
@@ -16,20 +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
@@ -66,6 +60,9 @@ static const char * const packet_name[] = {
[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)
@@ -82,7 +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)
@@ -106,9 +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;
}
@@ -125,26 +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)
@@ -200,9 +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,
@@ -230,12 +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;
@@ -260,7 +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;
}
@@ -313,7 +302,7 @@ static int intel_pt_get_bip_8(const unsigned char *buf, size_t len,
return INTEL_PT_NEED_MORE_BYTES;
packet->type = INTEL_PT_BIP;
packet->count = buf[0] >> 3;
- memcpy_le64(&packet->payload, buf + 1, 8);
+ packet->payload = get_unaligned_le64(buf + 1);
return 9;
}
@@ -333,6 +322,29 @@ static int intel_pt_get_bep_ip(size_t len, struct intel_pt_pkt *packet)
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)
{
@@ -379,6 +391,10 @@ static int intel_pt_get_ext(const unsigned char *buf, size_t len,
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;
}
@@ -440,13 +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:
@@ -459,7 +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;
@@ -479,6 +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;
@@ -628,6 +645,9 @@ void intel_pt_upd_pkt_ctx(const struct intel_pt_pkt *packet,
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:
@@ -701,7 +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:
@@ -713,16 +733,17 @@ 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);
@@ -755,6 +776,13 @@ int intel_pt_pkt_desc(const struct intel_pt_pkt *packet, char *buf,
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;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.