pcp_reference_guide_v2.5 - Tasking

Linker Script Language8−31If you are defining multiple derivatives that show great resemblance, youcan define the common features in a parent derivative and extend thiswith a child derivative that contains specific features. The child inherits allfeatures of the parent (cores and memories). With the keyword extendsyou create a child derivative:derivative name_child_deriv extends name_parent_deriv{definitions}As with a core architecture, a derivative can have any number ofparameters. These are identifiers which get values assigned oninstantiation or extension of the derivative. You can use them in anyexpression within the derivative definition.derivative name_child_deriv (parm1,parm2=1)extends name_parent_derivh (arguments){definitions}8.6.2 INSTANTIATING CORE ARCHITECTURESWith the keyword core you instantiate a core architecture in a derivative.• With the keyword architecture you tell the linker that the givencore has a certain architecture. The architecture name refers to anexisting architecture definition in the same LSL file.For example, if you have two cores (called mycore_1 and mycore_2)that have the same architecture (called mycorearch), you mustinstantiate both cores as follows:core mycore_1{architecture = mycorearch;}core mycore_2{architecture = mycorearch;}• • • • • • • •