mirror of
https://github.com/opencv/opencv.git
synced 2024-12-16 10:29:11 +08:00
85923c8f30
Update zlib-ng to 2.2.1 #26113 Release: https://github.com/zlib-ng/zlib-ng/releases/tag/2.2.1 ARM diagnostics patch: https://github.com/zlib-ng/zlib-ng/pull/1774 ### Pull Request Readiness Checklist See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request - [x] I agree to contribute to the project under Apache 2 License. - [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV - [x] The PR is proposed to the proper branch - [ ] There is a reference to the original bug report and related work - [ ] There is accuracy test, performance test and test data in opencv_extra repository, if applicable Patch to opencv_extra has the same branch name. - [ ] The feature is well documented and sample code can be built with the project CMake
116 lines
3.4 KiB
C
116 lines
3.4 KiB
C
#include "zbuild.h"
|
|
#include "arm_features.h"
|
|
|
|
#if defined(__linux__) && defined(HAVE_SYS_AUXV_H)
|
|
# include <sys/auxv.h>
|
|
# ifdef ARM_ASM_HWCAP
|
|
# include <asm/hwcap.h>
|
|
# endif
|
|
#elif defined(__FreeBSD__) && defined(__aarch64__)
|
|
# include <machine/armreg.h>
|
|
# ifndef ID_AA64ISAR0_CRC32_VAL
|
|
# define ID_AA64ISAR0_CRC32_VAL ID_AA64ISAR0_CRC32
|
|
# endif
|
|
#elif defined(__OpenBSD__) && defined(__aarch64__)
|
|
# include <machine/armreg.h>
|
|
# include <machine/cpu.h>
|
|
# include <sys/sysctl.h>
|
|
# include <sys/types.h>
|
|
#elif defined(__APPLE__)
|
|
# if !defined(_DARWIN_C_SOURCE)
|
|
# define _DARWIN_C_SOURCE /* enable types aliases (eg u_int) */
|
|
# endif
|
|
# include <sys/sysctl.h>
|
|
#elif defined(_WIN32)
|
|
# include <windows.h>
|
|
#endif
|
|
|
|
static int arm_has_crc32() {
|
|
#if defined(__linux__) && defined(ARM_AUXV_HAS_CRC32)
|
|
# ifdef HWCAP_CRC32
|
|
return (getauxval(AT_HWCAP) & HWCAP_CRC32) != 0 ? 1 : 0;
|
|
# else
|
|
return (getauxval(AT_HWCAP2) & HWCAP2_CRC32) != 0 ? 1 : 0;
|
|
# endif
|
|
#elif defined(__FreeBSD__) && defined(__aarch64__)
|
|
return getenv("QEMU_EMULATING") == NULL
|
|
&& ID_AA64ISAR0_CRC32_VAL(READ_SPECIALREG(id_aa64isar0_el1)) >= ID_AA64ISAR0_CRC32_BASE;
|
|
#elif defined(__OpenBSD__) && defined(__aarch64__)
|
|
int hascrc32 = 0;
|
|
int isar0_mib[] = { CTL_MACHDEP, CPU_ID_AA64ISAR0 };
|
|
uint64_t isar0 = 0;
|
|
size_t len = sizeof(isar0);
|
|
if (sysctl(isar0_mib, 2, &isar0, &len, NULL, 0) != -1) {
|
|
if (ID_AA64ISAR0_CRC32(isar0) >= ID_AA64ISAR0_CRC32_BASE)
|
|
hascrc32 = 1;
|
|
}
|
|
return hascrc32;
|
|
#elif defined(__APPLE__)
|
|
int hascrc32;
|
|
size_t size = sizeof(hascrc32);
|
|
return sysctlbyname("hw.optional.armv8_crc32", &hascrc32, &size, NULL, 0) == 0
|
|
&& hascrc32 == 1;
|
|
#elif defined(_WIN32)
|
|
return IsProcessorFeaturePresent(PF_ARM_V8_CRC32_INSTRUCTIONS_AVAILABLE);
|
|
#elif defined(ARM_NOCHECK_ACLE)
|
|
return 1;
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
/* AArch64 has neon. */
|
|
#if !defined(__aarch64__) && !defined(_M_ARM64) && !defined(_M_ARM64EC)
|
|
static inline int arm_has_neon() {
|
|
#if defined(__linux__) && defined(ARM_AUXV_HAS_NEON)
|
|
# ifdef HWCAP_ARM_NEON
|
|
return (getauxval(AT_HWCAP) & HWCAP_ARM_NEON) != 0 ? 1 : 0;
|
|
# else
|
|
return (getauxval(AT_HWCAP) & HWCAP_NEON) != 0 ? 1 : 0;
|
|
# endif
|
|
#elif defined(__APPLE__)
|
|
int hasneon;
|
|
size_t size = sizeof(hasneon);
|
|
return sysctlbyname("hw.optional.neon", &hasneon, &size, NULL, 0) == 0
|
|
&& hasneon == 1;
|
|
#elif defined(_M_ARM) && defined(WINAPI_FAMILY_PARTITION)
|
|
# if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_PHONE_APP)
|
|
return 1; /* Always supported */
|
|
# endif
|
|
#endif
|
|
|
|
#if defined(ARM_NOCHECK_NEON)
|
|
return 1;
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
/* AArch64 does not have ARMv6 SIMD. */
|
|
#if !defined(__aarch64__) && !defined(_M_ARM64) && !defined(_M_ARM64EC)
|
|
static inline int arm_has_simd() {
|
|
#if defined(__linux__) && defined(HAVE_SYS_AUXV_H)
|
|
const char *platform = (const char *)getauxval(AT_PLATFORM);
|
|
return strncmp(platform, "v6l", 3) == 0
|
|
|| strncmp(platform, "v7l", 3) == 0
|
|
|| strncmp(platform, "v8l", 3) == 0;
|
|
#elif defined(ARM_NOCHECK_SIMD)
|
|
return 1;
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
void Z_INTERNAL arm_check_features(struct arm_cpu_features *features) {
|
|
#if defined(__aarch64__) || defined(_M_ARM64) || defined(_M_ARM64EC)
|
|
features->has_simd = 0; /* never available */
|
|
features->has_neon = 1; /* always available */
|
|
#else
|
|
features->has_simd = arm_has_simd();
|
|
features->has_neon = arm_has_neon();
|
|
#endif
|
|
features->has_crc32 = arm_has_crc32();
|
|
}
|