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Cpuid2cpuflags
Jul 20, 2023
Tool to generate CPU_FLAGS_* for your CPU
The program attempts to obtain the identification and capabilities of the currently used CPU, and print the matching set of CPU_FLAGS_* flags for Gentoo Linux, but it could be useful for FreeBSD as well.
The output format is compatible both with Portage package.use and Paludis use.conf/options.conf.
On x86 platforms, the program issues the CPUID instruction to obtain processor capabilities.
On ARM platforms, the userspace processes are not allowed to obtain processor information directly. Instead, the program is relying on kernel identification of the CPU provided via the system interfaces.
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