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2957f5084d
* Update zlibng * Set cmake path more directly in zlibng to hopefully fix an issue with the build on drone * I'm dumb, missing / in path * Mackal helps with a dumb gitignore issue * Adding all the files, not sure what's ignoring them and im tired of looking * Some tweaks to zlibng build to hopefully get it to build properly. works on msvc now
70 lines
1.9 KiB
C
70 lines
1.9 KiB
C
#include "../../zutil.h"
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#if defined(__linux__)
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# include <sys/auxv.h>
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# include <asm/hwcap.h>
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#elif defined(__FreeBSD__) && defined(__aarch64__)
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# include <machine/armreg.h>
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# ifndef ID_AA64ISAR0_CRC32_VAL
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# define ID_AA64ISAR0_CRC32_VAL ID_AA64ISAR0_CRC32
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# endif
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#elif defined(__APPLE__)
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# include <sys/sysctl.h>
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#elif defined(_WIN32)
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# include <winapifamily.h>
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#endif
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static int arm_has_crc32() {
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#if defined(__linux__) && defined(HWCAP2_CRC32)
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return (getauxval(AT_HWCAP2) & HWCAP2_CRC32) != 0 ? 1 : 0;
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#elif defined(__FreeBSD__) && defined(__aarch64__)
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return getenv("QEMU_EMULATING") == NULL
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&& ID_AA64ISAR0_CRC32_VAL(READ_SPECIALREG(id_aa64isar0_el1)) >= ID_AA64ISAR0_CRC32_BASE;
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#elif defined(__APPLE__)
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int hascrc32;
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size_t size = sizeof(hascrc32);
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return sysctlbyname("hw.optional.armv8_crc32", &hascrc32, &size, NULL, 0) == 0
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&& hascrc32 == 1;
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#elif defined(ARM_NOCHECK_ACLE)
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return 1;
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#else
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return 0;
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#endif
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}
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/* AArch64 has neon. */
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#if !defined(__aarch64__) && !defined(_M_ARM64)
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static inline int arm_has_neon() {
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#if defined(__linux__) && defined(HWCAP_NEON)
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return (getauxval(AT_HWCAP) & HWCAP_NEON) != 0 ? 1 : 0;
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#elif defined(__APPLE__)
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int hasneon;
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size_t size = sizeof(hasneon);
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return sysctlbyname("hw.optional.neon", &hasneon, &size, NULL, 0) == 0
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&& hasneon == 1;
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#elif defined(_M_ARM) && defined(WINAPI_FAMILY_PARTITION)
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# if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_PHONE_APP)
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return 1; /* Always supported */
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# endif
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#endif
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#if defined(ARM_NOCHECK_NEON)
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return 1;
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#else
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return 0;
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#endif
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}
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#endif
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Z_INTERNAL int arm_cpu_has_neon;
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Z_INTERNAL int arm_cpu_has_crc32;
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void Z_INTERNAL arm_check_features(void) {
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#if defined(__aarch64__) || defined(_M_ARM64)
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arm_cpu_has_neon = 1; /* always available */
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#else
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arm_cpu_has_neon = arm_has_neon();
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#endif
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arm_cpu_has_crc32 = arm_has_crc32();
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}
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