Messages in this thread Patch in this message | | | From | Leo Yan <> | Subject | [PATCH v4 18/21] perf arm-spe: Refactor operation packet handling | Date | Tue, 27 Oct 2020 11:09:14 +0800 |
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Defines macros for operation packet header and formats (support sub classes for 'other', 'branch', 'load and store', etc). Uses these macros for operation packet decoding and dumping.
Signed-off-by: Leo Yan <leo.yan@linaro.org> --- .../arm-spe-decoder/arm-spe-pkt-decoder.c | 32 ++++++++++--------- .../arm-spe-decoder/arm-spe-pkt-decoder.h | 23 +++++++++++++ 2 files changed, 40 insertions(+), 15 deletions(-)
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 7c6a0caed976..e3b0d22743e8 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 @@ -144,7 +144,7 @@ static int arm_spe_get_op_type(const unsigned char *buf, size_t len, struct arm_spe_pkt *packet) { packet->type = ARM_SPE_OP_TYPE; - packet->index = buf[0] & 0x3; + packet->index = SPE_OP_PKT_HDR_CLASS(buf[0]); return arm_spe_get_payload(buf, len, 0, packet); } @@ -339,37 +339,38 @@ static int arm_spe_pkt_desc_event(const struct arm_spe_pkt *packet, static int arm_spe_pkt_desc_op_type(const struct arm_spe_pkt *packet, char *buf, size_t buf_len) { - int ret, idx = packet->index; + int ret, class = packet->index; unsigned long long payload = packet->payload; size_t blen = buf_len; - switch (idx) { - case 0: + switch (class) { + case SPE_OP_PKT_HDR_CLASS_OTHER: return arm_spe_pkt_snprintf(&buf, &blen, - payload & 0x1 ? "COND-SELECT" : "INSN-OTHER"); - case 1: + payload & SPE_OP_PKT_COND ? "COND-SELECT" : "INSN-OTHER"); + case SPE_OP_PKT_HDR_CLASS_LD_ST_ATOMIC: ret = arm_spe_pkt_snprintf(&buf, &blen, - payload & 0x1 ? "ST" : "LD"); + payload & SPE_OP_PKT_ST ? "ST" : "LD"); if (ret < 0) return ret; - if (payload & 0x2) { - if (payload & 0x4) { + if (SPE_OP_PKT_IS_LDST_ATOMIC(payload)) { + if (payload & SPE_OP_PKT_AT) { ret = arm_spe_pkt_snprintf(&buf, &blen, " AT"); if (ret < 0) return ret; } - if (payload & 0x8) { + if (payload & SPE_OP_PKT_EXCL) { ret = arm_spe_pkt_snprintf(&buf, &blen, " EXCL"); if (ret < 0) return ret; } - if (payload & 0x10) { + if (payload & SPE_OP_PKT_AR) { ret = arm_spe_pkt_snprintf(&buf, &blen, " AR"); if (ret < 0) return ret; } - } else if (payload & 0x4) { + } else if (SPE_OP_PKT_LDST_SUBCLASS_GET(payload) == + SPE_OP_PKT_LDST_SUBCLASS_SIMD_FP) { ret = arm_spe_pkt_snprintf(&buf, &blen, " SIMD-FP"); if (ret < 0) return ret; @@ -377,17 +378,18 @@ static int arm_spe_pkt_desc_op_type(const struct arm_spe_pkt *packet, return buf_len - blen; - case 2: + case SPE_OP_PKT_HDR_CLASS_BR_ERET: ret = arm_spe_pkt_snprintf(&buf, &blen, "B"); if (ret < 0) return ret; - if (payload & 0x1) { + if (payload & SPE_OP_PKT_COND) { ret = arm_spe_pkt_snprintf(&buf, &blen, " COND"); if (ret < 0) return ret; } - if (payload & 0x2) { + + if (SPE_OP_PKT_IS_INDIRECT_BRANCH(payload)) { ret = arm_spe_pkt_snprintf(&buf, &blen, " IND"); if (ret < 0) return ret; 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 42ed4e61ede2..7032fc141ad4 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 @@ -105,6 +105,29 @@ enum arm_spe_events { EV_EMPTY_PREDICATE = 18, }; +/* Operation packet header */ +#define SPE_OP_PKT_HDR_CLASS(h) ((h) & GENMASK_ULL(1, 0)) +#define SPE_OP_PKT_HDR_CLASS_OTHER 0x0 +#define SPE_OP_PKT_HDR_CLASS_LD_ST_ATOMIC 0x1 +#define SPE_OP_PKT_HDR_CLASS_BR_ERET 0x2 + +#define SPE_OP_PKT_COND BIT(0) + +#define SPE_OP_PKT_LDST_SUBCLASS_GET(v) ((v) & GENMASK_ULL(7, 1)) +#define SPE_OP_PKT_LDST_SUBCLASS_GP_REG 0x0 +#define SPE_OP_PKT_LDST_SUBCLASS_SIMD_FP 0x4 +#define SPE_OP_PKT_LDST_SUBCLASS_UNSPEC_REG 0x10 +#define SPE_OP_PKT_LDST_SUBCLASS_NV_SYSREG 0x30 + +#define SPE_OP_PKT_IS_LDST_ATOMIC(v) (((v) & (GENMASK_ULL(7, 5) | BIT(1))) == 0x2) + +#define SPE_OP_PKT_AR BIT(4) +#define SPE_OP_PKT_EXCL BIT(3) +#define SPE_OP_PKT_AT BIT(2) +#define SPE_OP_PKT_ST BIT(0) + +#define SPE_OP_PKT_IS_INDIRECT_BRANCH(v) (((v) & GENMASK_ULL(7, 1)) == 0x2) + const char *arm_spe_pkt_name(enum arm_spe_pkt_type); int arm_spe_get_packet(const unsigned char *buf, size_t len, -- 2.17.1
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