1 files changed, 20 insertions, 0 deletions
diff --git a/cpukit/compiler-rt/lib/builtins/bswapsi2.c b/cpukit/compiler-rt/lib/builtins/bswapsi2.c
new file mode 100644
index 0000000000..ec566d61a2
--- /dev/null
+++ b/cpukit/compiler-rt/lib/builtins/bswapsi2.c
@@ -0,0 +1,20 @@
+//===-- bswapsi2.c - Implement __bswapsi2 ---------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements __bswapsi2 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "int_lib.h"
+
+COMPILER_RT_ABI uint32_t __bswapsi2(uint32_t u) {
+  return ((((u)&0xff000000) >> 24) |
+          (((u)&0x00ff0000) >> 8)  |
+          (((u)&0x0000ff00) << 8)  |
+          (((u)&0x000000ff) << 24));
+}