2 files changed, 38 insertions, 0 deletions
diff --git a/libc/src/time/darwin/CMakeLists.txt b/libc/src/time/darwin/CMakeLists.txt
new file mode 100644
index 0000000..6d68086
--- /dev/null
+++ b/libc/src/time/darwin/CMakeLists.txt
@@ -0,0 +1,10 @@
+add_entrypoint_object(
+  clock_gettime
+  SRCS
+    clock_gettime.cpp
+  HDRS
+    # The public header is part of the parent directory's library.
+  DEPENDS
+    libc.src.__support.time.clock_gettime
+    libc.src.errno.errno
+)
diff --git a/libc/src/time/darwin/clock_gettime.cpp b/libc/src/time/darwin/clock_gettime.cpp
new file mode 100644
index 0000000..ecf116b
--- /dev/null
+++ b/libc/src/time/darwin/clock_gettime.cpp
@@ -0,0 +1,28 @@
+//===---- Darwin implementation of the POSIX clock_gettime function --===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===-----------------------------------------------------------------===//
+
+#include "src/time/clock_gettime.h"
+
+#include "src/__support/common.h"
+#include "src/__support/libc_errno.h"
+#include "src/__support/macros/config.h"
+#include "src/__support/time/clock_gettime.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+LLVM_LIBC_FUNCTION(int, clock_gettime,
+                   (clockid_t clockid, struct timespec *ts)) {
+  auto result = internal::clock_gettime(clockid, ts);
+  if (!result.has_value()) {
+    libc_errno = result.error();
+    return -1;
+  }
+  return 0;
+}
+
+} // namespace LIBC_NAMESPACE_DECL