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dc2fdb8acf
Similarly to my recent addition of NEON-accelerated AES, these new implementations drop in alongside the SHA-NI ones, under a different set of ifdefs. All the details of selection and detection are essentially the same as they were for the AES code.
59 lines
971 B
C
59 lines
971 B
C
#include "ssh.h"
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#if defined __linux__ && (defined __arm__ || defined __aarch64__)
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#include <sys/auxv.h>
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#include <asm/hwcap.h>
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bool platform_aes_hw_available(void)
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{
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#if defined HWCAP_AES
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return getauxval(AT_HWCAP) & HWCAP_AES;
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#elif defined HWCAP2_AES
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return getauxval(AT_HWCAP2) & HWCAP2_AES;
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#else
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return false;
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#endif
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}
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bool platform_sha256_hw_available(void)
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{
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#if defined HWCAP_SHA2
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return getauxval(AT_HWCAP) & HWCAP_SHA2;
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#elif defined HWCAP2_SHA2
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return getauxval(AT_HWCAP2) & HWCAP2_SHA2;
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#else
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return false;
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#endif
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}
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bool platform_sha1_hw_available(void)
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{
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#if defined HWCAP_SHA1
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return getauxval(AT_HWCAP) & HWCAP_SHA1;
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#elif defined HWCAP2_SHA1
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return getauxval(AT_HWCAP2) & HWCAP2_SHA1;
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#else
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return false;
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#endif
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}
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#else
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bool platform_aes_hw_available(void)
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{
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return false;
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}
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bool platform_sha256_hw_available(void)
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{
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return false;
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}
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bool platform_sha1_hw_available(void)
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{
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return false;
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}
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#endif
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