Hello, This switches the ns32k target to the CALL_DUMMY_BREAKPOINT_OFFSET mechanism. When using that mechanism, GDB explicitly sets a momentary breakpoint at the inferior function call's return address. The ns32k is the only target that doesn't use that mechanism so doing this switch lets GDB expunge a macro. If course I've no ns32k so this is just an educated guess :-) Jason, got a machine to test this on? Or should this be assumed to work? Andrew