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| author | Peter Maydell <peter.maydell@linaro.org> | 2021-06-17 13:16:25 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2021-06-24 14:58:48 +0100 |
| commit | 67ec113b119360092dee679ca0f5eca8ac60992c (patch) | |
| tree | 6bf1cb50c8194f142949a20a6288cc1838460d8f /target/arm/translate-mve.c | |
| parent | 89bc4c4f78c2435fdf8dc10b650cfe73c75f1f2c (diff) | |
| download | qemu-67ec113b119360092dee679ca0f5eca8ac60992c.zip qemu-67ec113b119360092dee679ca0f5eca8ac60992c.tar.gz qemu-67ec113b119360092dee679ca0f5eca8ac60992c.tar.bz2 | |
target/arm: Implement MVE VCADD
Implement the MVE VCADD insn, which performs a complex add with
rotate. Note that the size=0b11 encoding is VSBC.
The architecture grants some leeway for the "destination and Vm
source overlap" case for the size MO_32 case, but we choose not to
make use of it, instead always calculating all 16 bytes worth of
results before setting the destination register.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210617121628.20116-42-peter.maydell@linaro.org
Diffstat (limited to 'target/arm/translate-mve.c')
| -rw-r--r-- | target/arm/translate-mve.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/target/arm/translate-mve.c b/target/arm/translate-mve.c index f8cc608..b164907 100644 --- a/target/arm/translate-mve.c +++ b/target/arm/translate-mve.c @@ -420,6 +420,13 @@ DO_2OP(VQRDMLSDH, vqrdmlsdh) DO_2OP(VQRDMLSDHX, vqrdmlsdhx) DO_2OP(VRHADD_S, vrhadds) DO_2OP(VRHADD_U, vrhaddu) +/* + * VCADD Qd == Qm at size MO_32 is UNPREDICTABLE; we choose not to diagnose + * so we can reuse the DO_2OP macro. (Our implementation calculates the + * "expected" results in this case.) + */ +DO_2OP(VCADD90, vcadd90) +DO_2OP(VCADD270, vcadd270) static bool trans_VQDMULLB(DisasContext *s, arg_2op *a) { |