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 that 6 // 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