This routine is invoked during emulation, if this breakpoint has somehow been associated with this kind of pcode op. The callback can perform any operation on the emulator context it wants. It then returns \b true if these actions are intended to replace the action of the pcode op itself. Or it returns \b false if the pcode op should still have its normal effect on the emulator context. \param op
source not stored for this graph (policy: none)