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