initial recleaning of this mess, preparing for merge of JIT proper

--HG--
extra : convert_revision : svn%3A39bc706e-5318-0410-9160-8a85361fbb7c/trunk%4074

sourcepawn/include/sp_vm_api.h

@@ -74,7 +74,11 @@ namespace SourcePawn
 		virtual void BaseFree(void *memory) =0;
 	};
 
-	class ICompilation;
+	class ICompilation
+	{
+	public:
+		virtual ~ICompilation() { };
+	};
 
 	class IVirtualMachine
 	{
@@ -107,9 +111,17 @@ namespace SourcePawn
 		 * Note: This will free the ICompilation pointer.
 		 *
 		 * @param co		Compilation pointer.
+		 * @param err		Filled with error code on exit.
 		 * @return			New plugin context.
 		 */
-		virtual IPluginContext *CompileToContext(ICompilation *co) =0;
+		virtual IPluginContext *CompileToContext(ICompilation *co, int *err) =0;
+
+		/**
+		 * Aborts a compilation and frees the ICompilation pointer.
+		 *
+		 * @param co		Compilation pointer.
+		 */
+		virtual void AbortCompilation(ICompilation *co) =0;
 
 		/**
 		 * Frees any internal variable usage on a context.

sourcepawn/include/sp_vm_base.h

@@ -0,0 +1,14 @@
+#ifndef _INCLUDE_SOURCEPAWN_VM_BASE_H_
+#define _INCLUDE_SOURCEPAWN_VM_BASE_H_
+
+#include <sp_vm_api.h>
+
+#if defined WIN32
+#define EXPORT_LINK		extern "C" __declspec(dllexport)
+#else if defined __GNUC__
+#define EXPORT_LINK		extern "C" __attribute__((visibility("default")))
+#endif
+
+typedef SourcePawn::IVirtualMachine *(*SP_GETVM_FUNC)(SourcePawn::ISourcePawnEngine *);
+
+#endif //_INCLUDE_SOURCEPAWN_VM_BASE_H_

sourcepawn/include/sp_vm_types.h

@@ -20,6 +20,7 @@ typedef int32_t		cell_t;
 #define SP_ERR_NATIVE_PENDING		8	/* A script tried to exec an unbound native */
 #define SP_ERR_STACKERR				9	/* Stack/Heap collision */
 #define SP_ERR_NOTDEBUGGING			10	/* Debug mode was not on or debug section not found */
+#define SP_ERR_INVALID_INSTRUCTION	11	/* Invalid instruction was encountered */
 
 /**********************************************
  *** The following structures are reference structures.