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| author | Christian Weisgerber <naddy@mips.inka.de> | 2022-06-12 21:51:16 +0200 |
|---|---|---|
| committer | Niels Möller <nisse@lysator.liu.se> | 2022-06-12 21:51:16 +0200 |
| commit | b874bdead2903d715c6964b2e8f9ed7d2b61db12 (patch) | |
| tree | 7c43db186582e92e6eee9cad7521ca86850c90b3 /fat-arm64.c | |
| parent | fde7c534529c1762df1295d0452fe3cc81fdf3fe (diff) | |
| download | nettle-b874bdead2903d715c6964b2e8f9ed7d2b61db12.tar.gz | |
Enable runtime arm64 feature detection on openbsd
Diffstat (limited to 'fat-arm64.c')
| -rw-r--r-- | fat-arm64.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/fat-arm64.c b/fat-arm64.c index ef3c33f4..f2b8493d 100644 --- a/fat-arm64.c +++ b/fat-arm64.c @@ -46,6 +46,10 @@ # include <asm/hwcap.h> # include <sys/auxv.h> # endif +#elif defined(__OpenBSD__) +# include <sys/sysctl.h> +# include <machine/cpu.h> +# include <machine/armreg.h> #endif #include "nettle-types.h" @@ -122,6 +126,21 @@ get_arm64_features (struct arm64_features *features) = ((hwcap & (HWCAP_ASIMD | HWCAP_SHA1)) == (HWCAP_ASIMD | HWCAP_SHA1)); features->have_sha2 = ((hwcap & (HWCAP_ASIMD | HWCAP_SHA2)) == (HWCAP_ASIMD | HWCAP_SHA2)); +#elif defined(__OpenBSD__) + const int isar0_mib[] = { CTL_MACHDEP, CPU_ID_AA64ISAR0 }; + uint64_t isar0; + size_t len = sizeof(isar0); + + if (sysctl(isar0_mib, 2, &isar0, &len, NULL, 0) < 0) + return; + features->have_aes + = (ID_AA64ISAR0_AES(isar0) >= ID_AA64ISAR0_AES_BASE); + features->have_pmull + = (ID_AA64ISAR0_AES(isar0) >= ID_AA64ISAR0_AES_PMULL); + features->have_sha1 + = (ID_AA64ISAR0_SHA1(isar0) >= ID_AA64ISAR0_SHA1_BASE); + features->have_sha2 + = (ID_AA64ISAR0_SHA2(isar0) >= ID_AA64ISAR0_SHA2_BASE); #endif } } |