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target/arm: Convert Bitfield to decodetree

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Convert the BFM, SBFM, UBFM instructions.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20230512144106.3608981-12-peter.maydell@linaro.org
[PMM: Rebased]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2023-05-12 15:40:57 +01:00 • committed by Peter Maydell
parent ee0daeb946
commit 5e451ae63b
2 changed files with 94 additions and 63 deletions
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13
target/arm/tcg/a64.decode
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@ -84,3 +84,16 @@ MOVZ . 10 100101 .. ................ ..... @movw_64
MOVZ . 10 100101 .. ................ ..... @movw_32
MOVK . 11 100101 .. ................ ..... @movw_64
MOVK . 11 100101 .. ................ ..... @movw_32
# Bitfield
&bitfield rd rn sf immr imms
@bitfield_64 1 .. ...... 1 immr:6 imms:6 rn:5 rd:5 &bitfield sf=1
@bitfield_32 0 .. ...... 0 0 immr:5 0 imms:5 rn:5 rd:5 &bitfield sf=0
SBFM . 00 100110 . ...... ...... ..... ..... @bitfield_64
SBFM . 00 100110 . ...... ...... ..... ..... @bitfield_32
BFM . 01 100110 . ...... ...... ..... ..... @bitfield_64
BFM . 01 100110 . ...... ...... ..... ..... @bitfield_32
UBFM . 10 100110 . ...... ...... ..... ..... @bitfield_64
UBFM . 10 100110 . ...... ...... ..... ..... @bitfield_32