| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <20201022145816.14069-10-leo.yan@linaro.org>
Date: Thu, 22 Oct 2020 15:58:05 +0100
From: Leo Yan <leo.yan@...aro.org>
To: Arnaldo Carvalho de Melo <acme@...nel.org>,
Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Jiri Olsa <jolsa@...hat.com>,
Namhyung Kim <namhyung@...nel.org>,
Wei Li <liwei391@...wei.com>,
James Clark <james.clark@....com>,
Andre Przywara <andre.przywara@....com>,
Al Grant <Al.Grant@....com>, Dave Martin <Dave.Martin@....com>,
linux-kernel@...r.kernel.org
Cc: Leo Yan <leo.yan@...aro.org>
Subject: [PATCH v3 09/20] perf arm-spe: Refactor address packet handling
This patch is to refactor address packet handling, it defines macros for
address packet's header and payload, these macros are used by decoder
and the dump flow.
Signed-off-by: Leo Yan <leo.yan@...aro.org>
---
.../util/arm-spe-decoder/arm-spe-decoder.c | 29 ++++++++--------
.../arm-spe-decoder/arm-spe-pkt-decoder.c | 26 +++++++-------
.../arm-spe-decoder/arm-spe-pkt-decoder.h | 34 ++++++++++++-------
3 files changed, 47 insertions(+), 42 deletions(-)
diff --git a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c
index cc18a1e8c212..776b3e6628bb 100644
--- a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c
+++ b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c
@@ -24,36 +24,35 @@
static u64 arm_spe_calc_ip(int index, u64 payload)
{
- u8 *addr = (u8 *)&payload;
- int ns, el;
+ u64 ns, el;
/* Instruction virtual address or Branch target address */
if (index == SPE_ADDR_PKT_HDR_INDEX_INS ||
index == SPE_ADDR_PKT_HDR_INDEX_BRANCH) {
- ns = addr[7] & SPE_ADDR_PKT_NS;
- el = (addr[7] & SPE_ADDR_PKT_EL_MASK) >> SPE_ADDR_PKT_EL_OFFSET;
+ ns = SPE_ADDR_PKT_GET_NS(payload);
+ el = SPE_ADDR_PKT_GET_EL(payload);
+
+ /* Clean highest byte */
+ payload = SPE_ADDR_PKT_ADDR_GET_BYTES_0_6(payload);
/* Fill highest byte for EL1 or EL2 (VHE) mode */
if (ns && (el == SPE_ADDR_PKT_EL1 || el == SPE_ADDR_PKT_EL2))
- addr[7] = 0xff;
- /* Clean highest byte for other cases */
- else
- addr[7] = 0x0;
+ payload |= 0xffULL << SPE_ADDR_PKT_ADDR_BYTE7_SHIFT;
/* Data access virtual address */
} else if (index == SPE_ADDR_PKT_HDR_INDEX_DATA_VIRT) {
+ /* Clean tags */
+ payload = SPE_ADDR_PKT_ADDR_GET_BYTES_0_6(payload);
+
/* Fill highest byte if bits [48..55] is 0xff */
- if (addr[6] == 0xff)
- addr[7] = 0xff;
- /* Otherwise, cleanup tags */
- else
- addr[7] = 0x0;
+ if (SPE_ADDR_PKT_ADDR_GET_BYTE_6(payload) == 0xffULL)
+ payload |= 0xffULL << SPE_ADDR_PKT_ADDR_BYTE7_SHIFT;
/* Data access physical address */
} else if (index == SPE_ADDR_PKT_HDR_INDEX_DATA_PHYS) {
- /* Cleanup byte 7 */
- addr[7] = 0x0;
+ /* Clean highest byte */
+ payload = SPE_ADDR_PKT_ADDR_GET_BYTES_0_6(payload);
} else {
pr_err("unsupported address packet index: 0x%x\n", index);
}
diff --git a/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.c b/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.c
index 550cd7648c73..156f98d6b8b2 100644
--- a/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.c
+++ b/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.c
@@ -13,9 +13,6 @@
#include "arm-spe-pkt-decoder.h"
-#define NS_FLAG BIT(63)
-#define EL_FLAG (BIT(62) | BIT(61))
-
#if __BYTE_ORDER == __BIG_ENDIAN
#define le16_to_cpu bswap_16
#define le32_to_cpu bswap_32
@@ -167,10 +164,11 @@ static int arm_spe_get_addr(const unsigned char *buf, size_t len,
const unsigned char ext_hdr, struct arm_spe_pkt *packet)
{
packet->type = ARM_SPE_ADDRESS;
+
if (ext_hdr)
- packet->index = ((buf[0] & 0x3) << 3) | (buf[1] & 0x7);
+ packet->index = SPE_ADDR_PKT_HDR_EXTENDED_INDEX(buf[0], buf[1]);
else
- packet->index = buf[0] & 0x7;
+ packet->index = SPE_ADDR_PKT_HDR_SHORT_INDEX(buf[0]);
return arm_spe_get_payload(buf, len, ext_hdr, packet);
}
@@ -274,20 +272,20 @@ static int arm_spe_pkt_desc_addr(const struct arm_spe_pkt *packet,
u64 payload = packet->payload;
switch (idx) {
- case 0:
- case 1:
- ns = !!(packet->payload & NS_FLAG);
- el = (packet->payload & EL_FLAG) >> 61;
- payload &= ~(0xffULL << 56);
+ case SPE_ADDR_PKT_HDR_INDEX_INS:
+ case SPE_ADDR_PKT_HDR_INDEX_BRANCH:
+ ns = !!SPE_ADDR_PKT_GET_NS(payload);
+ el = SPE_ADDR_PKT_GET_EL(payload);
+ payload = SPE_ADDR_PKT_ADDR_GET_BYTES_0_6(payload);
return arm_spe_pkt_snprintf(&buf, &buf_len,
"%s 0x%llx el%d ns=%d",
(idx == 1) ? "TGT" : "PC", payload, el, ns);
- case 2:
+ case SPE_ADDR_PKT_HDR_INDEX_DATA_VIRT:
return arm_spe_pkt_snprintf(&buf, &buf_len,
"VA 0x%llx", payload);
- case 3:
- ns = !!(packet->payload & NS_FLAG);
- payload &= ~(0xffULL << 56);
+ case SPE_ADDR_PKT_HDR_INDEX_DATA_PHYS:
+ ns = !!SPE_ADDR_PKT_GET_NS(payload);
+ payload = SPE_ADDR_PKT_ADDR_GET_BYTES_0_6(payload);
return arm_spe_pkt_snprintf(&buf, &buf_len,
"PA 0x%llx ns=%d", payload, ns);
default:
diff --git a/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.h b/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.h
index 68552ff8a8f7..4111550d2bde 100644
--- a/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.h
+++ b/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.h
@@ -59,19 +59,27 @@ struct arm_spe_pkt {
#define SPE_HEADER_SZ(val) ((val & GENMASK_ULL(5, 4)) >> 4)
-#define SPE_ADDR_PKT_HDR_INDEX_INS (0x0)
-#define SPE_ADDR_PKT_HDR_INDEX_BRANCH (0x1)
-#define SPE_ADDR_PKT_HDR_INDEX_DATA_VIRT (0x2)
-#define SPE_ADDR_PKT_HDR_INDEX_DATA_PHYS (0x3)
-
-#define SPE_ADDR_PKT_NS BIT(7)
-#define SPE_ADDR_PKT_CH BIT(6)
-#define SPE_ADDR_PKT_EL_OFFSET (5)
-#define SPE_ADDR_PKT_EL_MASK (0x3 << SPE_ADDR_PKT_EL_OFFSET)
-#define SPE_ADDR_PKT_EL0 (0)
-#define SPE_ADDR_PKT_EL1 (1)
-#define SPE_ADDR_PKT_EL2 (2)
-#define SPE_ADDR_PKT_EL3 (3)
+/* Address packet header */
+#define SPE_ADDR_PKT_HDR_SHORT_INDEX(h) ((h) & GENMASK_ULL(2, 0))
+#define SPE_ADDR_PKT_HDR_EXTENDED_INDEX(h0, h1) (((h0) & GENMASK_ULL(1, 0)) << 3 | \
+ SPE_ADDR_PKT_HDR_SHORT_INDEX(h1))
+#define SPE_ADDR_PKT_HDR_INDEX_INS 0x0
+#define SPE_ADDR_PKT_HDR_INDEX_BRANCH 0x1
+#define SPE_ADDR_PKT_HDR_INDEX_DATA_VIRT 0x2
+#define SPE_ADDR_PKT_HDR_INDEX_DATA_PHYS 0x3
+
+/* Address packet payload */
+#define SPE_ADDR_PKT_ADDR_BYTE7_SHIFT 56
+#define SPE_ADDR_PKT_ADDR_GET_BYTES_0_6(v) ((v) & GENMASK_ULL(55, 0))
+#define SPE_ADDR_PKT_ADDR_GET_BYTE_6(v) (((v) & GENMASK_ULL(55, 48)) >> 48)
+
+#define SPE_ADDR_PKT_GET_NS(v) (((v) & BIT(63)) >> 63)
+#define SPE_ADDR_PKT_GET_EL(v) (((v) & GENMASK_ULL(62, 61)) >> 61)
+
+#define SPE_ADDR_PKT_EL0 0
+#define SPE_ADDR_PKT_EL1 1
+#define SPE_ADDR_PKT_EL2 2
+#define SPE_ADDR_PKT_EL3 3
const char *arm_spe_pkt_name(enum arm_spe_pkt_type);
--
2.17.1
Powered by blists - more mailing lists