1 files changed, 47 insertions, 0 deletions
diff --git a/lib/tsan/unit_tests/tsan_shadow_test.cc b/lib/tsan/unit_tests/tsan_shadow_test.cc
new file mode 100644
index 000000000000..41f9121be0fa
--- /dev/null
+++ b/lib/tsan/unit_tests/tsan_shadow_test.cc
@@ -0,0 +1,47 @@
+//===-- tsan_shadow_test.cc -----------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of ThreadSanitizer (TSan), a race detector.
+//
+//===----------------------------------------------------------------------===//
+#include "tsan_platform.h"
+#include "gtest/gtest.h"
+
+namespace __tsan {
+
+TEST(Shadow, Mapping) {
+  static int global;
+  int stack;
+  void *heap = malloc(0);
+  free(heap);
+
+  CHECK(IsAppMem((uptr)&global));
+  CHECK(IsAppMem((uptr)&stack));
+  CHECK(IsAppMem((uptr)heap));
+
+  CHECK(IsShadowMem(MemToShadow((uptr)&global)));
+  CHECK(IsShadowMem(MemToShadow((uptr)&stack)));
+  CHECK(IsShadowMem(MemToShadow((uptr)heap)));
+}
+
+TEST(Shadow, Celling) {
+  u64 aligned_data[4];
+  char *data = (char*)aligned_data;
+  CHECK_EQ((uptr)data % kShadowSize, 0);
+  uptr s0 = MemToShadow((uptr)&data[0]);
+  CHECK_EQ(s0 % kShadowSize, 0);
+  for (unsigned i = 1; i < kShadowCell; i++)
+    CHECK_EQ(s0, MemToShadow((uptr)&data[i]));
+  for (unsigned i = kShadowCell; i < 2*kShadowCell; i++)
+    CHECK_EQ(s0 + kShadowSize*kShadowCnt, MemToShadow((uptr)&data[i]));
+  for (unsigned i = 2*kShadowCell; i < 3*kShadowCell; i++)
+    CHECK_EQ(s0 + 2*kShadowSize*kShadowCnt, MemToShadow((uptr)&data[i]));
+}
+
+}  // namespace __tsan