Import the asan runtime library into GCC tree

This patch imports the runtime library in the GCC tree, ensures that
-lasan is passed to the linker when -faddress-sanitizer is used and
sets up the build system accordingly.

ChangeLog:

	* configure.ac: Add libsanitizer to target_libraries.
	* Makefile.def: Ditto.
	* configure: Regenerate.
	* Makefile.in: Regenerate.
	* libsanitizer: New directory for asan runtime.  Contains an empty
	tsan directory.

gcc/ChangeLog:

	* gcc.c (LINK_COMMAND_SPEC): Add -laddress-sanitizer to link
	command if -faddress-sanitizer is on.

libsanitizer:

	Initial checkin: migrate asan runtime from llvm.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@193441 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 43 insertions, 0 deletions

diff --git a/libsanitizer/interception/interception_win.h b/libsanitizer/interception/interception_win.h
new file mode 100644
index 00000000000..ebac168d85a
--- /dev/null
+++ b/libsanitizer/interception/interception_win.h
@@ -0,0 +1,43 @@
+//===-- interception_linux.h ------------------------------------*- C++ -*-===//
+//
+// 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, uptr *func_addr);
+
+// returns true if the old function existed, false on failure.
+bool OverrideFunction(uptr old_func, uptr new_func, uptr *orig_old_func);
+}  // namespace __interception
+
+#if defined(_DLL)
+# define INTERCEPT_FUNCTION_WIN(func) \
+    ::__interception::GetRealFunctionAddress( \
+        #func, (::__interception::uptr*)&REAL(func))
+#else
+# define INTERCEPT_FUNCTION_WIN(func) \
+    ::__interception::OverrideFunction( \
+        (::__interception::uptr)func, \
+        (::__interception::uptr)WRAP(func), \
+        (::__interception::uptr*)&REAL(func))
+#endif
+
+#endif  // INTERCEPTION_WIN_H
+#endif  // _WIN32