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, 48 insertions, 0 deletions

diff --git a/runtime/GC/GCInterface.h b/runtime/GC/GCInterface.h
new file mode 100644
index 0000000000..4eb48183bc
--- /dev/null
+++ b/runtime/GC/GCInterface.h
@@ -0,0 +1,48 @@
+/*===-- GCInterface.h - Public interface exposed by garbage collectors ----===*\
+|*
+|*                     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 common public interface that must be exposed by all
+|* LLVM garbage collectors.
+|*
+\*===----------------------------------------------------------------------===*/
+
+#ifndef GCINTERFACE_H
+#define GCINTERFACE_H
+
+/* llvm_cg_walk_gcroots - This function is exposed by the LLVM code generator,
+ * and allows us to traverse the roots on the stack.
+ */
+void llvm_cg_walk_gcroots(void (*FP)(void **Root, void *Meta));
+
+
+/* llvm_gc_initialize - This function is called to initalize the garbage
+ * collector.
+ */
+void llvm_gc_initialize(unsigned InitialHeapSize);
+
+/* llvm_gc_allocate - This function allocates Size bytes from the heap and
+ * returns a pointer to it.
+ */
+void *llvm_gc_allocate(unsigned Size);
+
+/* llvm_gc_collect - This function forces a garbage collection cycle.
+ */
+void llvm_gc_collect();
+
+/* llvm_gc_read - This function should be implemented to include any read
+ * barrier code that is needed by the garbage collector.
+ */
+void *llvm_gc_read(void *ObjPtr, void **FieldPtr);
+
+/* llvm_gc_write - This function should be implemented to include any write
+ * barrier code that is needed by the garbage collector.
+ */
+void llvm_gc_write(void *V, void *ObjPtr, void **FieldPtr);
+
+#endif