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memset.S
Package: linux-2.4.20.tar.gz [view]
Upload User: jlfgdled
Upload Date: 2013-04-10
Package Size: 33168k
Code Size: 1k
Category:
Linux-Unix program
Development Platform:
Unix_Linux
- /*
- * 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:
- LTGR 4,4
- JZ memset_end
- LGR 0,2 # save pointer to memory area
- LGR 1,3 # move pad byte to R1
- LGR 3,4
- SGR 4,4 # no source for MVCLE, only a pad byte
- SGR 5,5
- MVCLE 2,4,0(1) # thats it, MVCLE is your friend
- JO .-4
- LGR 2,0 # return pointer to mem.
- memset_end:
- BR 14
