reorganized ungen opcode stuff

fixed mislabeled ungen ops, then added appropriate notes
added executable memory functions to API
compilation results in an sp_context_t, not a BaseContext now
renamed FreeContextVars() to FreeContext()
other minor changes

--HG--
extra : convert_revision : svn%3A39bc706e-5318-0410-9160-8a85361fbb7c/trunk%4098

sourcepawn/include/sp_vm_api.h

@@ -59,7 +59,7 @@ namespace SourcePawn
 		virtual void FreeBaseContext(IPluginContext *ctx) =0;
 
 		/**
-		 * Allocates memory.
+		 * Allocates large blocks of temporary memory.
 		 * 
 		 * @param size		Size of memory to allocate.
 		 * @return			Pointer to memory, NULL if allocation failed.
@@ -72,6 +72,21 @@ namespace SourcePawn
 		 * @param mem		Memory address to free.
 		 */
 		virtual void BaseFree(void *memory) =0;
+
+		/**
+		 * Allocates executable memory.
+		 *
+		 * @param size		Size of memory to allocate.
+		 * @return			Pointer to memory, NULL if allocation failed.
+		 */
+		virtual void *ExecAlloc(size_t size) =0;
+
+		/**
+		 * Frees executable memory.
+		 *
+		 * @param mem		Address to free.
+		 */
+		virtual void ExecFree(void *address) =0;
 	};
 
 	class ICompilation
@@ -107,14 +122,14 @@ namespace SourcePawn
 		virtual bool SetCompilationOption(ICompilation *co, const char *key, const char *val) =0;
 
 		/**
-		 * Finalizes a compilation into a new IContext.
+		 * Finalizes a compilation into a new sp_context_t.
 		 * 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, int *err) =0;
+		virtual sp_context_t *CompileToContext(ICompilation *co, int *err) =0;
 
 		/**
 		 * Aborts a compilation and frees the ICompilation pointer.
@@ -128,7 +143,7 @@ namespace SourcePawn
 		 *
 		 * @param ctx		Context structure pointer.
 		 */
-		virtual void FreeContextVars(sp_context_t *ctx) =0;
+		virtual void FreeContext(sp_context_t *ctx) =0;
 
 		/**
 		 * Calls the "execute" function on a context.

sourcepawn/include/sp_vm_types.h

@@ -201,7 +201,7 @@ typedef int (*SPVM_DEBUGBREAK)(SourcePawn::IPluginContext *, uint32_t, uint32_t)
 typedef struct sp_context_s
 {
 	/* general/parent information */
-	void			*base;		/* base of generated code and memory */
+	void			*codebase;	/* base of generated code and memory */
 	sp_plugin_t		*plugin;	/* pointer back to parent information */
 	SourcePawn::IPluginContext *context;	/* pointer to IPluginContext */
 	SourcePawn::IVirtualMachine *vmbase;	/* pointer to IVirtualMachine */