On Fri, 5 Feb 2021 17:20:55 GMT, Anton Kozlov <akoz...@openjdk.org> wrote:
>> src/hotspot/cpu/aarch64/vm_version_aarch64.hpp line 93: >> >>> 91: CPU_MARVELL = 'V', >>> 92: CPU_INTEL = 'i', >>> 93: CPU_APPLE = 'a', >> >> The `ARM Architecture Reference Manual ARMv8, for ARMv8-A architecture >> profile` has 8538 pages, can we be more specific and point to the particular >> section of the document where the CPU codes are defined? > > They are defined in 13.2.95. MIDR_EL1, Main ID Register. Apple's code is not > there, but "Arm can assign codes that are not published in this manual. All > values not assigned by Arm are reserved and must not be used.". I assume the > value was obtained by digging around > https://github.com/apple/darwin-xnu/blob/main/osfmk/arm/cpuid.h#L62 Anton, this paragraph looks like an excellent comment. ------------- PR: https://git.openjdk.java.net/jdk/pull/2200
