[asan] move lib/asan/interception to lib/interception so that other tools (e.g. tsan) can use it

llvm-svn: 156816

1 files changed, 42 insertions, 0 deletions

diff --git a/compiler-rt/lib/interception/interception_win.h b/compiler-rt/lib/interception/interception_win.h
new file mode 100644
index 00000000000..9d1586ecb17
--- /dev/null
+++ b/compiler-rt/lib/interception/interception_win.h
@@ -0,0 +1,42 @@
+//===-- interception_linux.h ------------------------------------*- C++ -*-===//
+//
+//                     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 AddressSanitizer, an address sanity checker.
+//
+// Windows-specific interception methods.
+//===----------------------------------------------------------------------===//
+
+#ifdef _WIN32
+
+#if !defined(INCLUDED_FROM_INTERCEPTION_LIB)
+# error "interception_win.h should be included from interception library only"
+#endif
+
+#ifndef INTERCEPTION_WIN_H
+#define INTERCEPTION_WIN_H
+
+namespace __interception {
+// returns true if a function with the given name was found.
+bool GetRealFunctionAddress(const char *func_name, void **func_addr);
+
+// returns true if the old function existed, false on failure.
+bool OverrideFunction(void *old_func, void *new_func, void **orig_old_func);
+}  // namespace __interception
+
+#if defined(_DLL)
+# define INTERCEPT_FUNCTION_WIN(func) \
+    ::__interception::GetRealFunctionAddress(#func, (void**)&REAL(func))
+#else
+# define INTERCEPT_FUNCTION_WIN(func) \
+    ::__interception::OverrideFunction((void*)func, (void*)WRAP(func), \
+                                       (void**)&REAL(func))
+#endif
+
+#endif  // INTERCEPTION_WIN_H
+#endif  // _WIN32