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target/arm/helper: zcr: Add build bug next to value range assumption

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The current implementation of ZCR_ELx matches the architecture, only
implementing the lower four bits, with the rest RAZ/WI. This puts
a strict limit on ARM_MAX_VQ of 16. Make sure we don't let ARM_MAX_VQ
grow without a corresponding update here.

Suggested-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Andrew Jones 2019-08-02 14:25:30 +02:00 committed by Peter Maydell
parent ae502508f8
commit 7b351d9870
1 changed files with 1 additions and 0 deletions
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target/arm/helper.c
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@ -5300,6 +5300,7 @@ static void zcr_write(CPUARMState *env, const ARMCPRegInfo *ri,
int new_len;
/* Bits other than [3:0] are RAZ/WI. */
QEMU_BUILD_BUG_ON(ARM_MAX_VQ > 16);
raw_write(env, ri, value & 0xf);
/*