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| author | Richard Henderson | 2021-05-25 03:02:40 +0200 |
|---|---|---|
| committer | Peter Maydell | 2021-05-25 17:01:43 +0200 |
| commit | e3a561318327417523693f94e99745516f690eb7 (patch) | |
| tree | 7af5db43c86f87a566a118bac28b622fcf391ef2 /target/arm/vec_helper.c | |
| parent | target/arm: Implement SVE2 integer multiply long (diff) | |
| download | qemu-e3a561318327417523693f94e99745516f690eb7.tar.gz qemu-e3a561318327417523693f94e99745516f690eb7.tar.xz qemu-e3a561318327417523693f94e99745516f690eb7.zip | |
target/arm: Implement SVE2 PMULLB, PMULLT
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210525010358.152808-15-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target/arm/vec_helper.c')
| -rw-r--r-- | target/arm/vec_helper.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/target/arm/vec_helper.c b/target/arm/vec_helper.c index 40b92100bf..b0ce597060 100644 --- a/target/arm/vec_helper.c +++ b/target/arm/vec_helper.c @@ -1750,6 +1750,30 @@ void HELPER(sve2_pmull_h)(void *vd, void *vn, void *vm, uint32_t desc) d[i] = pmull_h(nn, mm); } } + +static uint64_t pmull_d(uint64_t op1, uint64_t op2) +{ + uint64_t result = 0; + int i; + + for (i = 0; i < 32; ++i) { + uint64_t mask = -((op1 >> i) & 1); + result ^= (op2 << i) & mask; + } + return result; +} + +void HELPER(sve2_pmull_d)(void *vd, void *vn, void *vm, uint32_t desc) +{ + intptr_t sel = H4(simd_data(desc)); + intptr_t i, opr_sz = simd_oprsz(desc); + uint32_t *n = vn, *m = vm; + uint64_t *d = vd; + + for (i = 0; i < opr_sz / 8; ++i) { + d[i] = pmull_d(n[2 * i + sel], m[2 * i + sel]); + } +} #endif #define DO_CMP0(NAME, TYPE, OP) \ |