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arm64: v8.3: Support for Javascript conversion instruction

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ARMv8.3 adds support for a new instruction to perform conversion
from double precision floating point to integer  to match the
architected behaviour of the equivalent Javascript conversion.
Expose the availability via HWCAP and MRS emulation.

Signed-off-by: Suzuki K Poulose <[email protected]>
Signed-off-by: Catalin Marinas <[email protected]>
This commit is contained in:
Suzuki K Poulose 2017-03-14 18:13:25 +00:00 • committed by Catalin Marinas
commit c8c3798d23
5 changed files with 20 additions and 1 deletions
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8
Documentation/arm64/cpu-feature-registers.txt
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@ -169,6 +169,14 @@ infrastructure:
as available on the CPU where it is fetched and is not a system
wide safe value.
4) ID_AA64ISAR1_EL1 - Instruction set attribute register 1
x--------------------------------------------------x
| Name | bits | visible |
|--------------------------------------------------|
| JSCVT | [15-12] | y |
x--------------------------------------------------x
Appendix I: Example
---------------------------