/* *  arch/s390/lib/memset.S *    S390 fast memset routine * *  S390 version *    Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com), *//* * R2 = address to memory area * R3 = byte to fill memory with * R4 = number of bytes to fill */        .globl  memsetmemset:        LTR     4,4        JZ      memset_end        LR      0,2                    # save pointer to memory area        LR      1,3                    # move pad byte to R1        LR      3,4        SR      4,4                    # no source for MVCLE, only a pad byte        SR      5,5        MVCLE   2,4,0(1)               # thats it, MVCLE is your friend        JO      .-4        LR      2,0                    # return pointer to mem.memset_end:        BR      14