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/*

 *  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  memset

memset:

        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