Armv8.3 extends the SPE by adding: - Alignment field in the Events packet, and filtering on this event using PMSEVFR_EL1. - Support for the Scalable Vector Extension (SVE).
The main additions for SVE are: - Recording the vector length for SVE operations in the Operation Type packet. It is not possible to filter on vector length. - Incomplete predicate and empty predicate fields in the Events packet, and filtering on these events using PMSEVFR_EL1. Add the corresponding decode process of Events packet and Operation Type packet in perf tool. Signed-off-by: Wei Li <[email protected]> --- .../arm-spe-decoder/arm-spe-pkt-decoder.c | 69 ++++++++++++++++++- 1 file changed, 67 insertions(+), 2 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 b94001b756c7..10a3692839de 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 @@ -347,6 +347,24 @@ int arm_spe_pkt_desc(const struct arm_spe_pkt *packet, char *buf, blen -= ret; } } + if (idx > 2) { + if (payload & 0x800) { + ret = snprintf(buf, buf_len, " ALIGNMENT"); + buf += ret; + blen -= ret; + } + if (payload & 0x20000) { + ret = snprintf(buf, buf_len, " SVE-PRED-PARTIAL"); + buf += ret; + blen -= ret; + } + if (payload & 0x40000) { + ret = snprintf(buf, buf_len, " SVE-PRED-EMPTY"); + buf += ret; + blen -= ret; + } + } + if (ret < 0) return ret; blen -= ret; @@ -354,8 +372,38 @@ int arm_spe_pkt_desc(const struct arm_spe_pkt *packet, char *buf, } case ARM_SPE_OP_TYPE: switch (idx) { - case 0: return snprintf(buf, buf_len, "%s", payload & 0x1 ? - "COND-SELECT" : "INSN-OTHER"); + case 0: { + if (payload & 0x8) { + size_t blen = buf_len; + + ret = snprintf(buf, buf_len, "SVE-OTHER"); + buf += ret; + blen -= ret; + if (payload & 0x2) { + ret = snprintf(buf, buf_len, " FP"); + buf += ret; + blen -= ret; + } + if (payload & 0x4) { + ret = snprintf(buf, buf_len, " PRED"); + buf += ret; + blen -= ret; + } + if (payload & 0x70) { + ret = snprintf(buf, buf_len, " EVL %d", + 32 << ((payload & 0x70) >> 4)); + buf += ret; + blen -= ret; + } + if (ret < 0) + return ret; + blen -= ret; + return buf_len - blen; + } else { + return snprintf(buf, buf_len, "%s", payload & 0x1 ? + "COND-SELECT" : "INSN-OTHER"); + } + } case 1: { size_t blen = buf_len; @@ -385,6 +433,23 @@ int arm_spe_pkt_desc(const struct arm_spe_pkt *packet, char *buf, ret = snprintf(buf, buf_len, " SIMD-FP"); buf += ret; blen -= ret; + } else if (payload & 0x8) { + if (payload & 0x4) { + ret = snprintf(buf, buf_len, " PRED"); + buf += ret; + blen -= ret; + } + if (payload & 0x70) { + ret = snprintf(buf, buf_len, " EVL %d", + 32 << ((payload & 0x70) >> 4)); + buf += ret; + blen -= ret; + } + if (payload & 0x80) { + ret = snprintf(buf, buf_len, " SG"); + buf += ret; + blen -= ret; + } } if (ret < 0) return ret; -- 2.17.1
