Here is an IMO simple interface scheme: int target->type->get_interface(int id, void **interface);
The ID is a unique ID across OpenOCD. The interface can be either a single fn pointer or a structure which contains a list of fn pointers. Note that target or e.g. arm code can provide default implementations of an interface. The arm11 could provide it's interfaces and pass over to target.c to do the rest.. All the fn pointers take a pointer to target as the first argument. The return value is a boolean ERROR_OK success/failure. No interpretation is to be done of the return value according to the error handling rules in OpenOCD. In the case where the caller needs to distinguish between is not supported yet and should never be supported, then a separate interface like target->type->has_mmu must be added. -- Øyvind Harboe http://www.zylin.com/zy1000.html ARM7 ARM9 ARM11 XScale Cortex JTAG debugger and flash programmer _______________________________________________ Openocd-development mailing list Openocd-development@lists.berlios.de https://lists.berlios.de/mailman/listinfo/openocd-development
