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-rw-r--r--tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c142
1 files changed, 130 insertions, 12 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 988c82c6652d..b1257c816310 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
@@ -24,6 +24,8 @@
#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
@@ -46,15 +48,21 @@ static const char * const packet_name[] = {
[INTEL_PT_TIP_PGD] = "TIP.PGD",
[INTEL_PT_TIP_PGE] = "TIP.PGE",
[INTEL_PT_TSC] = "TSC",
+ [INTEL_PT_TMA] = "TMA",
[INTEL_PT_MODE_EXEC] = "MODE.Exec",
[INTEL_PT_MODE_TSX] = "MODE.TSX",
+ [INTEL_PT_MTC] = "MTC",
[INTEL_PT_TIP] = "TIP",
[INTEL_PT_FUP] = "FUP",
+ [INTEL_PT_CYC] = "CYC",
+ [INTEL_PT_VMCS] = "VMCS",
[INTEL_PT_PSB] = "PSB",
[INTEL_PT_PSBEND] = "PSBEND",
[INTEL_PT_CBR] = "CBR",
+ [INTEL_PT_TRACESTOP] = "TraceSTOP",
[INTEL_PT_PIP] = "PIP",
[INTEL_PT_OVF] = "OVF",
+ [INTEL_PT_MNT] = "MNT",
};
const char *intel_pt_pkt_name(enum intel_pt_pkt_type type)
@@ -96,10 +104,18 @@ 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;
return 8;
}
+static int intel_pt_get_tracestop(struct intel_pt_pkt *packet)
+{
+ packet->type = INTEL_PT_TRACESTOP;
+ return 2;
+}
+
static int intel_pt_get_cbr(const unsigned char *buf, size_t len,
struct intel_pt_pkt *packet)
{
@@ -110,6 +126,24 @@ static int intel_pt_get_cbr(const unsigned char *buf, size_t len,
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)
+ return INTEL_PT_NEED_MORE_BYTES;
+
+ packet->type = INTEL_PT_VMCS;
+ packet->count = count;
+ memcpy_le64(&packet->payload, buf + 2, count);
+
+ return count + 2;
+}
+
static int intel_pt_get_ovf(struct intel_pt_pkt *packet)
{
packet->type = INTEL_PT_OVF;
@@ -139,12 +173,49 @@ static int intel_pt_get_psbend(struct intel_pt_pkt *packet)
return 2;
}
+static int intel_pt_get_tma(const unsigned char *buf, size_t len,
+ struct intel_pt_pkt *packet)
+{
+ if (len < 7)
+ return INTEL_PT_NEED_MORE_BYTES;
+
+ packet->type = INTEL_PT_TMA;
+ packet->payload = buf[2] | (buf[3] << 8);
+ packet->count = buf[5] | ((buf[6] & BIT(0)) << 8);
+ return 7;
+}
+
static int intel_pt_get_pad(struct intel_pt_pkt *packet)
{
packet->type = INTEL_PT_PAD;
return 1;
}
+static int intel_pt_get_mnt(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_MNT;
+ memcpy_le64(&packet->payload, buf + 3, 8);
+ return 11
+;
+}
+
+static int intel_pt_get_3byte(const unsigned char *buf, size_t len,
+ struct intel_pt_pkt *packet)
+{
+ if (len < 3)
+ return INTEL_PT_NEED_MORE_BYTES;
+
+ switch (buf[2]) {
+ case 0x88: /* MNT */
+ return intel_pt_get_mnt(buf, len, packet);
+ default:
+ return INTEL_PT_BAD_PACKET;
+ }
+}
+
static int intel_pt_get_ext(const unsigned char *buf, size_t len,
struct intel_pt_pkt *packet)
{
@@ -156,14 +227,22 @@ static int intel_pt_get_ext(const unsigned char *buf, size_t len,
return intel_pt_get_long_tnt(buf, len, packet);
case 0x43: /* PIP */
return intel_pt_get_pip(buf, len, packet);
+ case 0x83: /* TraceStop */
+ return intel_pt_get_tracestop(packet);
case 0x03: /* CBR */
return intel_pt_get_cbr(buf, len, packet);
+ case 0xc8: /* VMCS */
+ return intel_pt_get_vmcs(buf, len, packet);
case 0xf3: /* OVF */
return intel_pt_get_ovf(packet);
case 0x82: /* PSB */
return intel_pt_get_psb(buf, len, packet);
case 0x23: /* PSBEND */
return intel_pt_get_psbend(packet);
+ case 0x73: /* TMA */
+ return intel_pt_get_tma(buf, len, packet);
+ case 0xC3: /* 3-byte header */
+ return intel_pt_get_3byte(buf, len, packet);
default:
return INTEL_PT_BAD_PACKET;
}
@@ -187,6 +266,28 @@ static int intel_pt_get_short_tnt(unsigned int byte,
return 1;
}
+static int intel_pt_get_cyc(unsigned int byte, const unsigned char *buf,
+ size_t len, struct intel_pt_pkt *packet)
+{
+ unsigned int offs = 1, shift;
+ uint64_t payload = byte >> 3;
+
+ byte >>= 2;
+ len -= 1;
+ for (shift = 5; byte & 1; shift += 7) {
+ if (offs > 9)
+ return INTEL_PT_BAD_PACKET;
+ if (len < offs)
+ return INTEL_PT_NEED_MORE_BYTES;
+ byte = buf[offs++];
+ payload |= (byte >> 1) << shift;
+ }
+
+ packet->type = INTEL_PT_CYC;
+ packet->payload = payload;
+ return offs;
+}
+
static int intel_pt_get_ip(enum intel_pt_pkt_type type, unsigned int byte,
const unsigned char *buf, size_t len,
struct intel_pt_pkt *packet)
@@ -269,6 +370,16 @@ static int intel_pt_get_tsc(const unsigned char *buf, size_t len,
return 8;
}
+static int intel_pt_get_mtc(const unsigned char *buf, size_t len,
+ struct intel_pt_pkt *packet)
+{
+ if (len < 2)
+ return INTEL_PT_NEED_MORE_BYTES;
+ packet->type = INTEL_PT_MTC;
+ packet->payload = buf[1];
+ return 2;
+}
+
static int intel_pt_do_get_packet(const unsigned char *buf, size_t len,
struct intel_pt_pkt *packet)
{
@@ -288,6 +399,9 @@ static int intel_pt_do_get_packet(const unsigned char *buf, size_t len,
return intel_pt_get_short_tnt(byte, packet);
}
+ if ((byte & 2))
+ return intel_pt_get_cyc(byte, buf, len, packet);
+
switch (byte & 0x1f) {
case 0x0D:
return intel_pt_get_ip(INTEL_PT_TIP, byte, buf, len, packet);
@@ -305,6 +419,8 @@ static int intel_pt_do_get_packet(const unsigned char *buf, size_t len,
return intel_pt_get_mode(buf, len, packet);
case 0x19:
return intel_pt_get_tsc(buf, len, packet);
+ case 0x59:
+ return intel_pt_get_mtc(buf, len, packet);
default:
return INTEL_PT_BAD_PACKET;
}
@@ -329,7 +445,7 @@ int intel_pt_get_packet(const unsigned char *buf, size_t len,
int intel_pt_pkt_desc(const struct intel_pt_pkt *packet, char *buf,
size_t buf_len)
{
- int ret, i;
+ int ret, i, nr;
unsigned long long payload = packet->payload;
const char *name = intel_pt_pkt_name(packet->type);
@@ -338,6 +454,7 @@ int intel_pt_pkt_desc(const struct intel_pt_pkt *packet, char *buf,
case INTEL_PT_PAD:
case INTEL_PT_PSB:
case INTEL_PT_PSBEND:
+ case INTEL_PT_TRACESTOP:
case INTEL_PT_OVF:
return snprintf(buf, buf_len, "%s", name);
case INTEL_PT_TNT: {
@@ -371,17 +488,16 @@ 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);
+ case INTEL_PT_CYC:
+ case INTEL_PT_VMCS:
+ case INTEL_PT_MTC:
+ case INTEL_PT_MNT:
case INTEL_PT_CBR:
- return snprintf(buf, buf_len, "%s 0x%llx", name, payload);
case INTEL_PT_TSC:
- if (packet->count)
- return snprintf(buf, buf_len,
- "%s 0x%llx CTC 0x%x FC 0x%x",
- name, payload, packet->count & 0xffff,
- (packet->count >> 16) & 0x1ff);
- else
- return snprintf(buf, buf_len, "%s 0x%llx",
- name, payload);
+ return snprintf(buf, buf_len, "%s 0x%llx", name, payload);
+ case INTEL_PT_TMA:
+ 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);
case INTEL_PT_MODE_TSX:
@@ -389,8 +505,10 @@ int intel_pt_pkt_desc(const struct intel_pt_pkt *packet, char *buf,
name, (unsigned)(payload >> 1) & 1,
(unsigned)payload & 1);
case INTEL_PT_PIP:
- ret = snprintf(buf, buf_len, "%s 0x%llx",
- name, payload);
+ nr = packet->payload & NR_FLAG ? 1 : 0;
+ payload &= ~NR_FLAG;
+ ret = snprintf(buf, buf_len, "%s 0x%llx (NR=%d)",
+ name, payload, nr);
return ret;
default:
break;
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-07-20 14:13:45 +0200