diff options
Diffstat (limited to 'contrib/llvm-project/compiler-rt/lib/builtins/cpu_model/aarch64/lse_atomics/fuchsia.inc')
| -rw-r--r-- | contrib/llvm-project/compiler-rt/lib/builtins/cpu_model/aarch64/lse_atomics/fuchsia.inc | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/contrib/llvm-project/compiler-rt/lib/builtins/cpu_model/aarch64/lse_atomics/fuchsia.inc b/contrib/llvm-project/compiler-rt/lib/builtins/cpu_model/aarch64/lse_atomics/fuchsia.inc new file mode 100644 index 000000000000..91eac70ae6c5 --- /dev/null +++ b/contrib/llvm-project/compiler-rt/lib/builtins/cpu_model/aarch64/lse_atomics/fuchsia.inc @@ -0,0 +1,12 @@ +#include <zircon/features.h> +#include <zircon/syscalls.h> + +static void CONSTRUCTOR_ATTRIBUTE init_have_lse_atomics(void) { + // This ensures the vDSO is a direct link-time dependency of anything that + // needs this initializer code. +#pragma comment(lib, "zircon") + uint32_t features; + zx_status_t status = _zx_system_get_features(ZX_FEATURE_KIND_CPU, &features); + __aarch64_have_lse_atomics = + status == ZX_OK && (features & ZX_ARM64_FEATURE_ISA_ATOMICS) != 0; +} |