8. A computer program product for mitigating return-oriented programming (ROP) mitigation attacks, the computer program product comprising: one or more non-transitory computer-readable storage media and program instructions stored on the one or more non-transitory computer-readable storage media, the program instructions comprising: program instructions to receive program code for execution and associated components needed by the program code for execution; program instructions to load the program code and associated components into memory; program instructions to a select a predetermined number of executable machine language instruction sequences from the loaded program code and the associated components, wherein each sequence terminates in a return instruction; program instructions to make multiple non-executable copies of each of the selected machine language instruction sequences; and program instructions to distribute the selected executable machine language instruction sequences and the multiple non-executable copies in memory; whereby, if the computer sustains an ROP attack and the ROP attack selects a machine language instruction sequence terminating in a return instruction to include in an ROP payload, the likelihood of the ROP attack selecting an executable machine language instruction sequence terminating in a return instruction is diminished.
8. A computer program product for mitigating return-oriented programming (ROP) mitigation attacks, the computer program product comprising: one or more non-transitory computer-readable storage media and program instructions stored on the one or more non-transitory computer-readable storage media, the program instructions comprising: program instructions to receive program code for execution and associated components needed by the program code for execution; program instructions to load the program code and associated components into memory; program instructions to a select a predetermined number of executable machine language instruction sequences from the loaded program code and the associated components, wherein each sequence terminates in a return instruction; program instructions to make multiple non-executable copies of each of the selected machine language instruction sequences; and program instructions to distribute the selected executable machine language instruction sequences and the multiple non-executable copies in memory; whereby, if the computer sustains an ROP attack and the ROP attack selects a machine language instruction sequence terminating in a return instruction to include in an ROP payload, the likelihood of the ROP attack selecting an executable machine language instruction sequence terminating in a return instruction is diminished. 12. A computer program product in accordance with claim 8 , wherein program instructions to distribute further comprise: program instructions to periodically distribute the selected executable machine language instruction sequences and the multiple non-executable copies in memory.