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--- third_party/zlib/cpu_features.c.orig 2024-06-18 21:44:01 UTC
+++ third_party/zlib/cpu_features.c
@@ -39,7 +39,8 @@ int ZLIB_INTERNAL riscv_cpu_enable_vclmul = 0;
#ifndef CPU_NO_SIMD
#if defined(ARMV8_OS_ANDROID) || defined(ARMV8_OS_LINUX) || \
- defined(ARMV8_OS_FUCHSIA) || defined(ARMV8_OS_IOS)
+ defined(ARMV8_OS_FUCHSIA) || defined(ARMV8_OS_IOS) || \
+ defined(ARMV8_OS_OPENBSD) || defined(ARMV8_OS_FREEBSD)
#include <pthread.h>
#endif
@@ -56,6 +57,10 @@ int ZLIB_INTERNAL riscv_cpu_enable_vclmul = 0;
#include <windows.h>
#elif defined(ARMV8_OS_IOS)
#include <sys/sysctl.h>
+#elif defined(ARMV8_OS_OPENBSD)
+#include <sys/sysctl.h>
+#include <machine/cpu.h>
+#include <machine/armreg.h>
#elif !defined(_MSC_VER)
#include <pthread.h>
#else
@@ -69,7 +74,8 @@ static void _cpu_check_features(void);
#if defined(ARMV8_OS_ANDROID) || defined(ARMV8_OS_LINUX) || \
defined(ARMV8_OS_MACOS) || defined(ARMV8_OS_FUCHSIA) || \
defined(X86_NOT_WINDOWS) || defined(ARMV8_OS_IOS) || \
- defined(RISCV_RVV)
+ defined(RISCV_RVV) || defined(ARMV8_OS_OPENBSD) || \
+ defined(ARMV8_OS_FREEBSD)
#if !defined(ARMV8_OS_MACOS)
// _cpu_check_features() doesn't need to do anything on mac/arm since all
// features are known at build time, so don't call it.
@@ -122,6 +128,17 @@ static void _cpu_check_features(void)
unsigned long features = getauxval(AT_HWCAP2);
arm_cpu_enable_crc32 = !!(features & HWCAP2_CRC32);
arm_cpu_enable_pmull = !!(features & HWCAP2_PMULL);
+#elif defined(ARMV8_OS_OPENBSD)
+ int isar0_mib[] = { CTL_MACHDEP, CPU_ID_AA64ISAR0 };
+ uint64_t cpu_id = 0;
+ size_t len = sizeof(cpu_id);
+ if (sysctl(isar0_mib, 2, &cpu_id, &len, NULL, 0) < 0)
+ return;
+ if (ID_AA64ISAR0_AES(cpu_id) >= ID_AA64ISAR0_AES_PMULL)
+ arm_cpu_enable_pmull = 1;
+
+ if (ID_AA64ISAR0_CRC32(cpu_id) >= ID_AA64ISAR0_CRC32_BASE)
+ arm_cpu_enable_crc32 = 1;
#elif defined(ARMV8_OS_FUCHSIA)
uint32_t features;
zx_status_t rc = zx_system_get_features(ZX_FEATURE_KIND_CPU, &features);
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