| /* |
| * 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 |
| |
| |
