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Linux/Aarch64: support SHA acceleration detection with older libc On Linux on aarch64 (64-bit ARMv8) processors, we use getauxval() to detect whether the runtime environment supports SHA-256 or SHA-512 acceleration. Some libc do not define the necessary HWCAP_xxx constants to analyze the result of getauxval(), either because they don't bother or because they're too old to recognize the values we need (for example, HWCAP_SHA2 appeared in Glibc 2.24 and HWCAP_SHA512 appeared in Glibc 2.27). In such cases, assume that the values are the same as in the kernel ABI and define the constants manually. Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com> Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
5 lines
194 B
Plaintext
5 lines
194 B
Plaintext
Bugfix
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* On Linux on ARMv8, fix a build error with SHA-256 and SHA-512
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acceleration detection when the libc headers do not define the
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corresponding constant. Reported by valord577.
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