Undo removal of the runtime libraries. While this may have been a bit

premature, these libraries will be going away for the 2.0 release. Other
arrangements for profiling, gc, etc. should be made in the next few months.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31807 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 71 insertions, 0 deletions

diff --git a/runtime/GCCLibraries/crtend/Exception.h b/runtime/GCCLibraries/crtend/Exception.h
new file mode 100644
index 0000000000..dc4d3a5f2c
--- /dev/null
+++ b/runtime/GCCLibraries/crtend/Exception.h
@@ -0,0 +1,71 @@
+//===- Exception.h - Generic language-independent exceptions ----*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines the the shared data structures used by all language
+// specific exception handling runtime libraries.
+//
+// NOTE NOTE NOTE: A copy of this file lives in llvmgcc/libstdc++-v3/libsupc++/
+// Any modifications to this file must keep it in sync!
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef EXCEPTION_H
+#define EXCEPTION_H
+
+struct llvm_exception {
+  // ExceptionDestructor - This call-back function is used to destroy the
+  // current exception, without requiring the caller to know what the concrete
+  // exception type is.
+  //
+  void (*ExceptionDestructor)(llvm_exception *);
+
+  // ExceptionType - This field identifies what runtime library this exception
+  // came from.  Currently defined values are:
+  //     0 - Error
+  //     1 - longjmp exception (see longjmp-exception.c)
+  //     2 - C++ exception (see c++-exception.c)
+  //
+  unsigned ExceptionType;
+
+  // Next - This points to the next exception in the current stack.
+  llvm_exception *Next;
+
+  // HandlerCount - This is a count of the number of handlers which have
+  // currently caught this exception.  If the handler is caught and this number
+  // falls to zero, the exception is destroyed.
+  //
+  unsigned HandlerCount;
+
+  // isRethrown - This field is set on an exception if it has been 'throw;'n.
+  // This is needed because the exception might exit through a number of the
+  // end_catch statements matching the number of begin_catch statements that
+  // have been processed.  When this happens, the exception should become
+  // uncaught, not dead.
+  //
+  int isRethrown;
+};
+
+enum {
+  ErrorException = 0,
+  SJLJException  = 1,
+  CXXException   = 2
+};
+
+// Language independent exception handling API...
+//
+extern "C" {
+  bool __llvm_eh_has_uncaught_exception() throw();
+  void *__llvm_eh_current_uncaught_exception_type(unsigned HandlerType) throw();
+  void __llvm_eh_add_uncaught_exception(llvm_exception *E) throw();
+
+  llvm_exception *__llvm_eh_get_uncaught_exception() throw();
+  llvm_exception *__llvm_eh_pop_from_uncaught_stack() throw();
+}
+
+#endif