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target/arm: Reject add/sub w/ shifted byte early

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Remove the unparsed extractions in trans_ADD_zzi, trans_SUBR_zzi,
and do_zzi_sat which are intended to reject an 8-bit shift of an
8-bit constant for 8-bit element.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220527181907.189259-73-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2022-05-27 11:18:25 -07:00 • committed by Peter Maydell
parent c437c59ba1
commit 3a40518079
2 changed files with 28 additions and 16 deletions
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35
target/arm/sve.decode
View file

@ -793,13 +793,34 @@ FDUP 00100101 esz:2 111 00 1110 imm:8 rd:5
}
# SVE integer add/subtract immediate (unpredicated)
ADD_zzi 00100101 .. 100 000 11 . ........ ..... @rdn_sh_i8u
SUB_zzi 00100101 .. 100 001 11 . ........ ..... @rdn_sh_i8u
SUBR_zzi 00100101 .. 100 011 11 . ........ ..... @rdn_sh_i8u
SQADD_zzi 00100101 .. 100 100 11 . ........ ..... @rdn_sh_i8u
UQADD_zzi 00100101 .. 100 101 11 . ........ ..... @rdn_sh_i8u
SQSUB_zzi 00100101 .. 100 110 11 . ........ ..... @rdn_sh_i8u
UQSUB_zzi 00100101 .. 100 111 11 . ........ ..... @rdn_sh_i8u
{
INVALID 00100101 00 100 000 11 1 -------- -----
ADD_zzi 00100101 .. 100 000 11 . ........ ..... @rdn_sh_i8u
}
{
INVALID 00100101 00 100 001 11 1 -------- -----
SUB_zzi 00100101 .. 100 001 11 . ........ ..... @rdn_sh_i8u
}
{
INVALID 00100101 00 100 011 11 1 -------- -----
SUBR_zzi 00100101 .. 100 011 11 . ........ ..... @rdn_sh_i8u
}
{
INVALID 00100101 00 100 100 11 1 -------- -----
SQADD_zzi 00100101 .. 100 100 11 . ........ ..... @rdn_sh_i8u
}
{
INVALID 00100101 00 100 101 11 1 -------- -----
UQADD_zzi 00100101 .. 100 101 11 . ........ ..... @rdn_sh_i8u
}
{
INVALID 00100101 00 100 110 11 1 -------- -----
SQSUB_zzi 00100101 .. 100 110 11 . ........ ..... @rdn_sh_i8u
}
{
INVALID 00100101 00 100 111 11 1 -------- -----
UQSUB_zzi 00100101 .. 100 111 11 . ........ ..... @rdn_sh_i8u
}
# SVE integer min/max immediate (unpredicated)
SMAX_zzi 00100101 .. 101 000 110 ........ ..... @rdn_i8s