arm64: insn: Allow ADD/SUB (immediate) with LSL #12

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The encoder for ADD/SUB (immediate) can only cope with 12bit
immediates, while there is an encoding for a 12bit immediate shifted
by 12 bits to the left.

Let's fix this small oversight by allowing the LSL_12 bit to be set.

Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

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Marc Zyngier 2017-12-03 17:50:00 +00:00

parent 9f2efa320d

commit 11d764079c

1 changed files with 16 additions and 2 deletions

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arch/arm64/kernel/insn.c

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