13 lines · plain
1#include <zircon/features.h>2#include <zircon/syscalls.h>3 4static void CONSTRUCTOR_ATTRIBUTE init_have_lse_atomics(void) {5 // This ensures the vDSO is a direct link-time dependency of anything that6 // needs this initializer code.7#pragma comment(lib, "zircon")8 uint32_t features;9 zx_status_t status = _zx_system_get_features(ZX_FEATURE_KIND_CPU, &features);10 __aarch64_have_lse_atomics =11 status == ZX_OK && (features & ZX_ARM64_FEATURE_ISA_ATOMICS) != 0;12}13