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--- third_party/lzma_sdk/C/CpuArch.c.orig 2025-04-22 20:15:27 UTC
+++ third_party/lzma_sdk/C/CpuArch.c
@@ -854,6 +854,34 @@ BoolInt CPU_IsSupported_AES (void) { return APPLE_CRYP
BoolInt CPU_IsSupported_SHA2(void) { return APPLE_CRYPTO_SUPPORT_VAL; }
BoolInt CPU_IsSupported_AES (void) { return APPLE_CRYPTO_SUPPORT_VAL; }
+#elif defined(__OpenBSD__)
+
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <machine/cpu.h>
+#include <machine/armreg.h>
+
+BoolInt CPU_IsSupported_NEON() { return 1; }
+
+#define MY_HWCAP_CHECK_FUNC_2(name1, name2) \
+ BoolInt CPU_IsSupported_ ## name1() { \
+ int isar0_mib[] = { CTL_MACHDEP, CPU_ID_AA64ISAR0 }; \
+ size_t len = sizeof(uint64_t); \
+ uint64_t cpu_id = 0; \
+ if (sysctl(isar0_mib, 2, &cpu_id, &len, NULL, 0) < 0) \
+ return 0; \
+ if (ID_AA64ISAR0_ ## name2(cpu_id) >= ID_AA64ISAR0_## name2 ##_BASE) \
+ return 1; \
+ return 0; \
+ }
+
+#define MY_HWCAP_CHECK_FUNC(name) \
+ MY_HWCAP_CHECK_FUNC_2(name, name)
+
+MY_HWCAP_CHECK_FUNC (CRC32)
+MY_HWCAP_CHECK_FUNC (SHA1)
+MY_HWCAP_CHECK_FUNC (SHA2)
+MY_HWCAP_CHECK_FUNC (AES)
#else // __APPLE__
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