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target/arm: Add Jazelle feature

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This adds a feature bit indicating support of the (trivial) Jazelle
implementation if ARM_FEATURE_V6 is set or if the processor is arm926
or arm1026.  This fixes the issue that any BXJ instruction will
result in an illegal_op.  BXJ instructions will now check if the
architecture supports ARM_FEATURE_JAZELLE.

Signed-off-by: Portia Stephens <portia.stephens@xilinx.com>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Message-id: 20170905211232.11092-1-portia.stephens@xilinx.com
[PMM: edited commit message and comment text a bit]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Portia Stephens 2017-09-07 13:54:55 +01:00 • committed by Peter Maydell
parent c79c0a314c
commit c99a55d38d
3 changed files with 5 additions and 1 deletions
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target/arm/cpu.h
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@ -1296,6 +1296,7 @@ enum arm_features {
ARM_FEATURE_PMU, /* has PMU support */
ARM_FEATURE_VBAR, /* has cp15 VBAR */
ARM_FEATURE_M_SECURITY, /* M profile Security Extension */
ARM_FEATURE_JAZELLE, /* has (trivial) Jazelle implementation */
};
static inline int arm_feature(CPUARMState *env, int feature)