add libc++ and libc++abi sources

upstream: LLVM 10

1 files changed, 59 insertions, 0 deletions

diff --git a/lib/libcxxabi/src/cxa_noexception.cpp b/lib/libcxxabi/src/cxa_noexception.cpp
new file mode 100644
index 0000000000..73e0b2ae03
--- /dev/null
+++ b/lib/libcxxabi/src/cxa_noexception.cpp
@@ -0,0 +1,59 @@
+//===------------------------- cxa_exception.cpp --------------------------===//
+//
+// 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 the "Exception Handling APIs"
+//  https://itanium-cxx-abi.github.io/cxx-abi/abi-eh.html
+//
+//===----------------------------------------------------------------------===//
+
+// Support functions for the no-exceptions libc++ library
+
+#include "cxxabi.h"
+
+#include <exception>        // for std::terminate
+#include "cxa_exception.h"
+#include "cxa_handlers.h"
+
+namespace __cxxabiv1 {
+
+extern "C" {
+
+void
+__cxa_increment_exception_refcount(void *thrown_object) throw() {
+    if (thrown_object != nullptr)
+        std::terminate();
+}
+
+void
+__cxa_decrement_exception_refcount(void *thrown_object) throw() {
+    if (thrown_object != nullptr)
+      std::terminate();
+}
+
+
+void *__cxa_current_primary_exception() throw() { return nullptr; }
+
+void
+__cxa_rethrow_primary_exception(void* thrown_object) {
+    if (thrown_object != nullptr)
+      std::terminate();
+}
+
+bool
+__cxa_uncaught_exception() throw() { return false; }
+
+unsigned int
+__cxa_uncaught_exceptions() throw() { return 0; }
+
+}  // extern "C"
+
+// provide dummy implementations for the 'no exceptions' case.
+uint64_t __getExceptionClass  (const _Unwind_Exception*)           { return 0; }
+void     __setExceptionClass  (      _Unwind_Exception*, uint64_t) {}
+bool     __isOurExceptionClass(const _Unwind_Exception*)           { return false; }
+
+}  // abi