Revert "Split exception.cpp and new.cpp implementation into different files for different runtimes."
The compiler-rt CMake configuration needs some tweaking before this can land.
llvm-svn: 294727
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: 8dcdeaeb35500dd309cf2ff315dd829501798027
diff --git a/src/exception.cpp b/src/exception.cpp
index 41d65f9..35a3a9a 100644
--- a/src/exception.cpp
+++ b/src/exception.cpp
@@ -6,30 +6,328 @@
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
+#include <stdlib.h>
+#include <stdio.h>
#include "exception"
#include "new"
-#if defined(LIBCXXRT) || defined(LIBCXX_BUILDING_LIBCXXABI) || \
- (defined(__APPLE__) && !defined(_LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY))
+#if defined(_LIBCPP_ABI_MICROSOFT)
+#include <eh.h>
+#include <corecrt_terminate.h>
+#elif defined(__APPLE__) && !defined(LIBCXXRT) && \
+ !defined(_LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY)
#include <cxxabi.h>
+
using namespace __cxxabiv1;
#define HAVE_DEPENDENT_EH_ABI 1
+ #ifndef _LIBCPPABI_VERSION
+ using namespace __cxxabiapple;
+ // On Darwin, there are two STL shared libraries and a lower level ABI
+ // shared library. The globals holding the current terminate handler and
+ // current unexpected handler are in the ABI library.
+ #define __terminate_handler __cxxabiapple::__cxa_terminate_handler
+ #define __unexpected_handler __cxxabiapple::__cxa_unexpected_handler
+ #endif // _LIBCPPABI_VERSION
+#elif defined(LIBCXXRT) || defined(LIBCXX_BUILDING_LIBCXXABI)
+ #include <cxxabi.h>
+ using namespace __cxxabiv1;
+ #if defined(LIBCXXRT) || defined(_LIBCPPABI_VERSION)
+ #define HAVE_DEPENDENT_EH_ABI 1
+ #endif
+#elif !defined(__GLIBCXX__) // defined(LIBCXX_BUILDING_LIBCXXABI)
+ _LIBCPP_SAFE_STATIC static std::terminate_handler __terminate_handler;
+ _LIBCPP_SAFE_STATIC static std::unexpected_handler __unexpected_handler;
+#endif // defined(LIBCXX_BUILDING_LIBCXXABI)
+
+namespace std
+{
+
+#if !defined(LIBCXXRT) && !defined(_LIBCPPABI_VERSION) && !defined(__GLIBCXX__)
+
+// libcxxrt provides implementations of these functions itself.
+unexpected_handler
+set_unexpected(unexpected_handler func) _NOEXCEPT
+{
+#if defined(_LIBCPP_ABI_MICROSOFT)
+ return ::set_unexpected(func);
+#else
+ return __sync_lock_test_and_set(&__unexpected_handler, func);
+#endif
+}
+
+unexpected_handler
+get_unexpected() _NOEXCEPT
+{
+#if defined(_LIBCPP_ABI_MICROSOFT)
+ return ::_get_unexpected();
+#else
+ return __sync_fetch_and_add(&__unexpected_handler, (unexpected_handler)0);
+#endif
+}
+
+_LIBCPP_NORETURN
+void
+unexpected()
+{
+ (*get_unexpected())();
+ // unexpected handler should not return
+ terminate();
+}
+
+terminate_handler
+set_terminate(terminate_handler func) _NOEXCEPT
+{
+#if defined(_LIBCPP_ABI_MICROSOFT)
+ return ::set_terminate(func);
+#else
+ return __sync_lock_test_and_set(&__terminate_handler, func);
+#endif
+}
+
+terminate_handler
+get_terminate() _NOEXCEPT
+{
+#if defined(_LIBCPP_ABI_MICROSOFT)
+ return ::_get_terminate();
+#else
+ return __sync_fetch_and_add(&__terminate_handler, (terminate_handler)0);
+#endif
+}
+
+#ifndef __EMSCRIPTEN__ // We provide this in JS
+_LIBCPP_NORETURN
+void
+terminate() _NOEXCEPT
+{
+#ifndef _LIBCPP_NO_EXCEPTIONS
+ try
+ {
+#endif // _LIBCPP_NO_EXCEPTIONS
+ (*get_terminate())();
+ // handler should not return
+ fprintf(stderr, "terminate_handler unexpectedly returned\n");
+ ::abort();
+#ifndef _LIBCPP_NO_EXCEPTIONS
+ }
+ catch (...)
+ {
+ // handler should not throw exception
+ fprintf(stderr, "terminate_handler unexpectedly threw an exception\n");
+ ::abort();
+ }
+#endif // _LIBCPP_NO_EXCEPTIONS
+}
+#endif // !__EMSCRIPTEN__
+#endif // !defined(LIBCXXRT) && !defined(_LIBCPPABI_VERSION)
+
+#if !defined(LIBCXXRT) && !defined(__GLIBCXX__) && !defined(__EMSCRIPTEN__)
+
+bool uncaught_exception() _NOEXCEPT { return uncaught_exceptions() > 0; }
+
+int uncaught_exceptions() _NOEXCEPT
+{
+#if !defined(_LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY) && \
+ (defined(__APPLE__) || defined(_LIBCPPABI_VERSION))
+ // on Darwin, there is a helper function so __cxa_get_globals is private
+# if _LIBCPPABI_VERSION > 1101
+ return __cxa_uncaught_exceptions();
+# else
+ return __cxa_uncaught_exception() ? 1 : 0;
+# endif
+#elif defined(_LIBCPP_ABI_MICROSOFT)
+ return __uncaught_exceptions();
+#else
+# if defined(_LIBCPP_MSVC)
+ _LIBCPP_WARNING("uncaught_exceptions not yet implemented")
+# else
+# warning uncaught_exception not yet implemented
+# endif
+ fprintf(stderr, "uncaught_exceptions not yet implemented\n");
+ ::abort();
+#endif // __APPLE__
+}
+
+
+#ifndef _LIBCPPABI_VERSION
+
+exception::~exception() _NOEXCEPT
+{
+}
+
+const char* exception::what() const _NOEXCEPT
+{
+ return "std::exception";
+}
+
+#endif // _LIBCPPABI_VERSION
+#endif //LIBCXXRT
+#if !defined(_LIBCPPABI_VERSION) && !defined(__GLIBCXX__)
+
+bad_exception::~bad_exception() _NOEXCEPT
+{
+}
+
+const char* bad_exception::what() const _NOEXCEPT
+{
+ return "std::bad_exception";
+}
+
#endif
-#if defined(_LIBCPP_ABI_MICROSOFT)
-#include "support/runtime/exception_msvc.ipp"
-#include "support/runtime/exception_pointer_unimplemented.ipp"
-#elif defined(_LIBCPPABI_VERSION)
-#include "support/runtime/exception_libcxxabi.ipp"
-#include "support/runtime/exception_pointer_cxxabi.ipp"
-#elif defined(LIBCXXRT)
-#include "support/runtime/exception_libcxxrt.ipp"
-#include "support/runtime/exception_pointer_cxxabi.ipp"
-#elif defined(__GLIBCXX__)
-#include "support/runtime/exception_glibcxx.ipp"
-#include "support/runtime/exception_pointer_glibcxx.ipp"
-#else
-#include "support/runtime/exception_fallback.ipp"
-#include "support/runtime/exception_pointer_unimplemented.ipp"
+#if defined(__GLIBCXX__)
+
+// libsupc++ does not implement the dependent EH ABI and the functionality
+// it uses to implement std::exception_ptr (which it declares as an alias of
+// std::__exception_ptr::exception_ptr) is not directly exported to clients. So
+// we have little choice but to hijack std::__exception_ptr::exception_ptr's
+// (which fortunately has the same layout as our std::exception_ptr) copy
+// constructor, assignment operator and destructor (which are part of its
+// stable ABI), and its rethrow_exception(std::__exception_ptr::exception_ptr)
+// function.
+
+namespace __exception_ptr
+{
+
+struct exception_ptr
+{
+ void* __ptr_;
+
+ exception_ptr(const exception_ptr&) _NOEXCEPT;
+ exception_ptr& operator=(const exception_ptr&) _NOEXCEPT;
+ ~exception_ptr() _NOEXCEPT;
+};
+
+}
+
+_LIBCPP_NORETURN void rethrow_exception(__exception_ptr::exception_ptr);
+
#endif
+
+exception_ptr::~exception_ptr() _NOEXCEPT
+{
+#if HAVE_DEPENDENT_EH_ABI
+ __cxa_decrement_exception_refcount(__ptr_);
+#elif defined(__GLIBCXX__)
+ reinterpret_cast<__exception_ptr::exception_ptr*>(this)->~exception_ptr();
+#else
+# if defined(_LIBCPP_MSVC)
+ _LIBCPP_WARNING("exception_ptr not yet implemented")
+# else
+# warning exception_ptr not yet implemented
+# endif
+ fprintf(stderr, "exception_ptr not yet implemented\n");
+ ::abort();
+#endif
+}
+
+exception_ptr::exception_ptr(const exception_ptr& other) _NOEXCEPT
+ : __ptr_(other.__ptr_)
+{
+#if HAVE_DEPENDENT_EH_ABI
+ __cxa_increment_exception_refcount(__ptr_);
+#elif defined(__GLIBCXX__)
+ new (reinterpret_cast<void*>(this)) __exception_ptr::exception_ptr(
+ reinterpret_cast<const __exception_ptr::exception_ptr&>(other));
+#else
+# if defined(_LIBCPP_MSVC)
+ _LIBCPP_WARNING("exception_ptr not yet implemented")
+# else
+# warning exception_ptr not yet implemented
+# endif
+ fprintf(stderr, "exception_ptr not yet implemented\n");
+ ::abort();
+#endif
+}
+
+exception_ptr& exception_ptr::operator=(const exception_ptr& other) _NOEXCEPT
+{
+#if HAVE_DEPENDENT_EH_ABI
+ if (__ptr_ != other.__ptr_)
+ {
+ __cxa_increment_exception_refcount(other.__ptr_);
+ __cxa_decrement_exception_refcount(__ptr_);
+ __ptr_ = other.__ptr_;
+ }
+ return *this;
+#elif defined(__GLIBCXX__)
+ *reinterpret_cast<__exception_ptr::exception_ptr*>(this) =
+ reinterpret_cast<const __exception_ptr::exception_ptr&>(other);
+ return *this;
+#else
+# if defined(_LIBCPP_MSVC)
+ _LIBCPP_WARNING("exception_ptr not yet implemented")
+# else
+# warning exception_ptr not yet implemented
+# endif
+ fprintf(stderr, "exception_ptr not yet implemented\n");
+ ::abort();
+#endif
+}
+
+nested_exception::nested_exception() _NOEXCEPT
+ : __ptr_(current_exception())
+{
+}
+
+#if !defined(__GLIBCXX__)
+
+nested_exception::~nested_exception() _NOEXCEPT
+{
+}
+
+#endif
+
+_LIBCPP_NORETURN
+void
+nested_exception::rethrow_nested() const
+{
+ if (__ptr_ == nullptr)
+ terminate();
+ rethrow_exception(__ptr_);
+}
+
+#if !defined(__GLIBCXX__)
+
+exception_ptr current_exception() _NOEXCEPT
+{
+#if HAVE_DEPENDENT_EH_ABI
+ // be nicer if there was a constructor that took a ptr, then
+ // this whole function would be just:
+ // return exception_ptr(__cxa_current_primary_exception());
+ exception_ptr ptr;
+ ptr.__ptr_ = __cxa_current_primary_exception();
+ return ptr;
+#else
+# if defined(_LIBCPP_MSVC)
+ _LIBCPP_WARNING( "exception_ptr not yet implemented" )
+# else
+# warning exception_ptr not yet implemented
+# endif
+ fprintf(stderr, "exception_ptr not yet implemented\n");
+ ::abort();
+#endif
+}
+
+#endif // !__GLIBCXX__
+
+_LIBCPP_NORETURN
+void rethrow_exception(exception_ptr p)
+{
+#if HAVE_DEPENDENT_EH_ABI
+ __cxa_rethrow_primary_exception(p.__ptr_);
+ // if p.__ptr_ is NULL, above returns so we terminate
+ terminate();
+#elif defined(__GLIBCXX__)
+ rethrow_exception(reinterpret_cast<__exception_ptr::exception_ptr&>(p));
+#else
+# if defined(_LIBCPP_MSVC)
+ _LIBCPP_WARNING("exception_ptr not yet implemented")
+# else
+# warning exception_ptr not yet implemented
+# endif
+ fprintf(stderr, "exception_ptr not yet implemented\n");
+ ::abort();
+#endif
+}
+} // std