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Add detection of ARM capabilities under Darwin.

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This commit is contained in:
Natalia Portillo
2021-10-13 02:54:21 +01:00
parent 3b50cdb5f0
commit 3797b44289
1 changed files with 42 additions and 0 deletions
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42
simd.c
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@@ -95,11 +95,43 @@ int have_avx2(void)
#if defined(_WIN32)
#include <windows.h>
#include <processthreadsapi.h>
#elif defined(__APPLE__)
#include <sys/sysctl.h>
#else
#include <sys/auxv.h>
#endif
#endif
#if (defined(__aarch64__) || defined(_M_ARM64) || defined(__arm__) || defined(_M_ARM)) && defined(__APPLE__)
int have_neon_apple()
{
int value;
size_t len = sizeof(int);
int ret=
sysctlbyname("hw.optional.neon", &value, &len, NULL, 0);
if(ret != 0)
return 0;
return value == 1;
}
int have_crc32_apple()
{
int value;
size_t len = sizeof(int);
int ret=
sysctlbyname("hw.optional.crc32", &value, &len, NULL, 0);
if(ret != 0)
return 0;
return value == 1;
}
int have_crypto_apple() { return 0; }
#endif
#if defined(__aarch64__) || defined(_M_ARM64)
int have_neon(void)
{
@@ -110,6 +142,8 @@ int have_arm_crc32(void)
{
#if defined(_WIN32)
return IsProcessorFeaturePresent(PF_ARM_V8_CRC32_INSTRUCTIONS_AVAILABLE) != 0;
#elif defined(__APPLE__)
return have_crc32_apple();
#else
return getauxval(AT_HWCAP) & HWCAP_CRC32;
#endif
@@ -119,6 +153,8 @@ int have_arm_crypto(void)
{
#if defined(_WIN32)
return IsProcessorFeaturePresent(PF_ARM_V8_CRYPTO_INSTRUCTIONS_AVAILABLE) != 0;
#elif defined(__APPLE__)
return have_crypto_apple();
#else
return getauxval(AT_HWCAP) & HWCAP_AES;
#endif
@@ -130,6 +166,8 @@ int have_neon(void)
{
#if defined(_WIN32)
return IsProcessorFeaturePresent(PF_ARM_VFP_32_REGISTERS_AVAILABLE) != 0;
#elif defined(__APPLE__)
return have_neon_apple();
#else
return getauxval(AT_HWCAP) & HWCAP_NEON;
#endif
@@ -139,6 +177,8 @@ int have_arm_crc32(void)
{
#if defined(_WIN32)
return IsProcessorFeaturePresent(PF_ARM_V8_CRC32_INSTRUCTIONS_AVAILABLE) != 0;
#elif defined(__APPLE__)
return have_crc32_apple();
#else
return getauxval(AT_HWCAP2) & HWCAP2_CRC32;
#endif
@@ -148,6 +188,8 @@ int have_arm_crypto(void)
{
#if defined(_WIN32)
return IsProcessorFeaturePresent(PF_ARM_V8_CRYPTO_INSTRUCTIONS_AVAILABLE) != 0;
#elif defined(__APPLE__)
return have_crypto_apple();
#else
return getauxval(AT_HWCAP2) & HWCAP2_AES;
#endif