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target/arm: Convert BRA[AB]Z, BLR[AB]Z, RETA[AB] to decodetree

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Convert the single-register pointer-authentication variants of BR,
BLR, RET to decodetree. (BRAA/BLRAA are in a different branch of
the legacy decoder and will be dealt with in the next commit.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230512144106.3608981-19-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2023-05-12 15:41:04 +01:00
parent c0b5e3943b
commit 0ebbe90212
2 changed files with 84 additions and 55 deletions
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7
target/arm/tcg/a64.decode
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@ -131,3 +131,10 @@ B_cond 0101010 0 ................... 0 cond:4 imm=%imm19
BR 1101011 0000 11111 000000 rn:5 00000 &r
BLR 1101011 0001 11111 000000 rn:5 00000 &r
RET 1101011 0010 11111 000000 rn:5 00000 &r
&braz rn m
BRAZ 1101011 0000 11111 00001 m:1 rn:5 11111 &braz # BRAAZ, BRABZ
BLRAZ 1101011 0001 11111 00001 m:1 rn:5 11111 &braz # BLRAAZ, BLRABZ
&reta m
RETA 1101011 0010 11111 00001 m:1 11111 11111 &reta # RETAA, RETAB