diff --git a/sourcepawn/vm/sp_vm_debug.h b/sourcepawn/vm/sp_vm_debug.h
new file mode 100644
index 00000000..901f955c
--- /dev/null
+++ b/sourcepawn/vm/sp_vm_debug.h
@@ -0,0 +1,52 @@
+#ifndef _INCLUDE_SOURCEPAWN_VM_DEBUG_H
+#define _INCLUDE_SOURCEPAWN_VM_DEBUG_H
+
+/*****************
+ ** Note that all functions return a non-zero error code on failure
+ *   unless otherwise noted.
+ * All input pointers must be valid unless otherwise noted as optional.
+ * All output pointers on failure are undefined.
+ * All local address are guaranteed to be positive.  However, they are stored
+ *  as signed integers, because they must logically fit inside a cell.
+ */
+
+/**
+ * Given a code pointer, finds the file it is associated with.
+ * 
+ * @param ctx		Context pointer.
+ * @param addr		Code address offset.
+ * @param filename	Pointer to store filename pointer in.
+ */
+int SP_DbgLookupFile(sp_context_t *ctx, ucell_t addr, const char **filename);
+
+/**
+ * Given a code pointer, finds the function it is associated with.
+ *
+ * @param ctx		Context pointer.
+ * @param addr		Code address offset.
+ * @param name		Pointer to store function name pointer in.
+ */
+int SP_DbgLookupFunction(sp_context_t *ctx, ucell_t addr, const char **name);
+
+/**
+ * Given a code pointer, finds the line it is associated with.
+ *
+ * @param ctx		Context pointer.
+ * @param addr		Code address offset.
+ * @param line		Pointer to store line number in.
+ */
+int SP_DbgLookupLine(sp_context_t *ctx, ucell_t addr, uint32_t *line);
+
+/**
+ * Installs a debug break and returns the old one, if any.
+ *
+ * @param ctx		Context pointer.
+ * @param newpfn	New function pointer.
+ * @param oldpfn	Pointer to retrieve old function pointer.
+ */
+int SP_DbgInstallBreak(sp_context_t *ctx, 
+					   SPVM_DEBUGBREAK newpfn, 
+					   SPVM_DEBUGBREAK *oldpfn);
+
+
+#endif //_INCLUDE_SOURCEPAWN_VM_DEBUG_H