From c891b2df087e0219319785c29d3af6042e4ac94f Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Wed, 4 Apr 2001 00:01:02 +0000 Subject: Update. 2001-04-03 Ulrich Drepper * misc/dirname.c (dirname): Handle multiple slashes correctly. 2001-04-03 Martin Schwidefsky * sysdeps/s390/s390-64/initfini.c: Fix __gmon_start__ GOT access. 2001-04-03 Martin Schwidefsky * sysdeps/s390/s390-32/bcopy.S: Optimize for speed. * sysdeps/s390/s390-64/bcopy.S: Likewise. * sysdeps/s390/s390-32/mempcy.S: Likewise. * sysdeps/s390/s390-64/memcpy.S: Likewise. 2001-04-02 Bruno Haible * manual/message.texi (Advanced gettext functions): More specific syntax in the plural formula examples. 2001-04-02 Franz Sirl * sysdeps/powerpc/atomicity.h: Silence warnings. * sysdeps/powerpc/dl-machine.h: Likewise. * sysdeps/powerpc/register-dump.h: Likewise. * sysdeps/powerpc/fpu/s_lrint.c: Likewise. 2001-04-02 Andreas Jaeger * misc/tst-dirname.c (main): Add more tests, derived from a bug report by Michael Kerrisk . 2001-04-01 Andreas Jaeger * debug/xtrace.sh (pcprofileso): Use SLIBDIR since libpcprofile.so is installed there. * malloc/memusage.sh (memusageso): Likewise for libmemusage.so. 2001-04-01 H.J. Lu * posix/annexc.c (macrofile): Renamed from TMPFILE and set to tmpnam (NULL). * stdlib/isomac.c (macrofile): Likewise. 2001-03-30 Thorsten Kukuk * inet/rcmd.c: Allow AF_UNSPEC as parameter. * nis/ypclnt.c (yp_all): Print error message only at last try, check for protocoll error only if we don't have a network error. --- sysdeps/s390/s390-64/memcpy.S | 34 +++++++++++++++++++--------------- 1 file changed, 19 insertions(+), 15 deletions(-) (limited to 'sysdeps/s390/s390-64/memcpy.S') diff --git a/sysdeps/s390/s390-64/memcpy.S b/sysdeps/s390/s390-64/memcpy.S index c59d3fbb79..008f026909 100644 --- a/sysdeps/s390/s390-64/memcpy.S +++ b/sysdeps/s390/s390-64/memcpy.S @@ -1,7 +1,6 @@ -/* Set a block of memory to some byte value. 64 bit S/390 version. - Copyright (C) 2001 Free Software Foundation, Inc. +/* memcpy - copy a block from source to destination. 64 bit S/390 version. + Copyright (C) 2000, 2001 Free Software Foundation, Inc. Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com). - This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as @@ -19,8 +18,8 @@ Boston, MA 02111-1307, USA. */ /* INPUT PARAMETERS - %r2 = address to destination memory area - %r3 = address to source memory area + %r2 = address of destination memory area + %r3 = address of source memory area %r4 = number of bytes to copy. */ #include "sysdep.h" @@ -28,14 +27,19 @@ .text ENTRY(memcpy) - ltgr %r5,%r4 + ltgr %r4,%r4 + jz .L3 + aghi %r4,-1 # length - 1 + lgr %r1,%r2 # copy destination address + srag %r5,%r4,8 jz .L1 - lgr %r4,%r3 # %r4/%r5 = source ptr/len - lgr %r3,%r5 # %r2/%r3 = dest ptr/len - lgr %r0,%r2 # save source address -.L0: mvcle %r2,%r4,0 # thats it, MVCLE is your friend - jo .L0 - lgr %r2,%r0 # return value is source address -.L1: - br %r14 -END(memset) +.L0: mvc 0(256,%r1),0(%r3) # move in 256 byte chunks + la %r1,256(%r1) + la %r3,256(%r3) + brctg %r5,.L0 +.L1: bras %r5,.L2 # setup base pointer for execute + mvc 0(1,%r1),0(%r3) # instruction for execute +.L2: ex %r4,0(%r5) # execute mvc with length ((%r4)&255)+1 +.L3: br %r14 +END(memcpy) + -- cgit v1.2.3