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target/arm: New utility function to extract EC from syndrome

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Create and use a utility function to extract the EC field
from a syndrome, rather than open-coding the shift.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20181012144235.19646-9-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2018-10-24 07:50:18 +01:00
parent eadb2febf0
commit 64b91e3f89
4 changed files with 9 additions and 4 deletions
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5
target/arm/internals.h
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@ -278,6 +278,11 @@ enum arm_exception_class {
#define ARM_EL_IL (1 << ARM_EL_IL_SHIFT)
#define ARM_EL_ISV (1 << ARM_EL_ISV_SHIFT)
static inline uint32_t syn_get_ec(uint32_t syn)
{
return syn >> ARM_EL_EC_SHIFT;
}
/* Utility functions for constructing various kinds of syndrome value.
* Note that in general we follow the AArch64 syndrome values; in a
* few cases the value in HSR for exceptions taken to AArch32 Hyp