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authorUlrich Drepper <drepper@redhat.com>2001-04-04 00:01:02 +0000
committerUlrich Drepper <drepper@redhat.com>2001-04-04 00:01:02 +0000
commitc891b2df087e0219319785c29d3af6042e4ac94f (patch)
tree35f252e14d0024b991068214f533f738d23bdab7 /sysdeps/s390/s390-32
parentf114375059d2f3ee90aaeea242120b3dda84787b (diff)
downloadglibc-c891b2df087e0219319785c29d3af6042e4ac94f.tar.gz
Update.
2001-04-03 Ulrich Drepper <drepper@redhat.com> * misc/dirname.c (dirname): Handle multiple slashes correctly. 2001-04-03 Martin Schwidefsky <schwidefsky@de.ibm.com> * sysdeps/s390/s390-64/initfini.c: Fix __gmon_start__ GOT access. 2001-04-03 Martin Schwidefsky <schwidefsky@de.ibm.com> * 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 <haible@clisp.cons.org> * manual/message.texi (Advanced gettext functions): More specific syntax in the plural formula examples. 2001-04-02 Franz Sirl <Franz.Sirl-kernel@lauterbach.com> * 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 <aj@suse.de> * misc/tst-dirname.c (main): Add more tests, derived from a bug report by Michael Kerrisk <mtk16@ext.canterbury.ac.nz>. 2001-04-01 Andreas Jaeger <aj@suse.de> * 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 <hjl@gnu.org> * posix/annexc.c (macrofile): Renamed from TMPFILE and set to tmpnam (NULL). * stdlib/isomac.c (macrofile): Likewise. 2001-03-30 Thorsten Kukuk <kukuk@suse.de> * 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.
Diffstat (limited to 'sysdeps/s390/s390-32')
-rw-r--r--sysdeps/s390/s390-32/bcopy.S54
-rw-r--r--sysdeps/s390/s390-32/memcpy.S37
2 files changed, 51 insertions, 40 deletions
diff --git a/sysdeps/s390/s390-32/bcopy.S b/sysdeps/s390/s390-32/bcopy.S
index 8bf5bbbefa..526e3361d1 100644
--- a/sysdeps/s390/s390-32/bcopy.S
+++ b/sysdeps/s390/s390-32/bcopy.S
@@ -1,4 +1,4 @@
-/* bcopy -- copy a block from source to destination. For IBM S390
+/* bcopy -- copy a block from source to destination. S/390 version.
This file is part of the GNU C Library.
Copyright (C) 2000, 2001 Free Software Foundation, Inc.
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
@@ -18,48 +18,53 @@
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
-/*
- * R2 = address of source
- * R3 = address of destination
- * R4 = number of bytes to copy
- */
+/* INPUT PARAMETERS
+ %r2 = address of source
+ %r3 = address of destination
+ %r4 = number of bytes to copy. */
#include "sysdep.h"
#include "asm-syntax.h"
.text
ENTRY(__bcopy)
+ ltr %r1,%r4 # zero bcopy ?
+ jz .L4
clr %r2,%r3 # check against destructive overlap
jnl .L0
- lr %r1,%r2
- alr %r1,%r4
+ alr %r1,%r2
clr %r1,%r3
- jh .L2
-.L0:
- lr %r5,%r4 # source length
- lr %r4,%r2 # source address
- sr %r1,%r1 # set pad byte to zero
- lr %r2,%r3 # set destination
- lr %r3,%r5 # destination length = source length
-.L1: mvcle %r2,%r4,0(%r1) # thats it, MVCLE is your friend
- jo .L1
- br %r14
-.L2: # destructive overlay, can not use mvcle
+ jh .L5
+.L0: ahi %r4,-1 # length - 1
+ lr %r1,%r4
+ srl %r1,8
+ ltr %r1,%r1
+ jz .L2
+.L1: mvc 0(256,%r3),0(%r2) # move in 256 byte chunks
+ la %r2,256(%r2)
+ la %r3,256(%r3)
+ brct %r1,.L1
+.L2: bras %r1,.L3 # setup base pointer for execute
+ mvc 0(1,%r3),0(%r2) # instruction for execute
+.L3: ex %r4,0(%r1) # execute mvc with length ((%r4)&255)+1
+.L4: br %r14
+
+.L5: # destructive overlay, can not use mvcle
lr %r1,%r2 # bcopy is called with source,dest
lr %r2,%r3 # memmove with dest,source! Oh, well...
lr %r3,%r1
basr %r1,0
-.L3:
+.L6:
#ifdef PIC
- al %r1,.L4-.L3(%r1) # get address of global offset table
+ al %r1,.L7-.L6(%r1) # get address of global offset table
# load address of memmove
l %r1,memmove@GOT12(%r1)
br %r1
-.L4: .long _GLOBAL_OFFSET_TABLE_-.L3
+.L7: .long _GLOBAL_OFFSET_TABLE_-.L6
#else
- al %r1,.L4-.L3(%r1) # load address of memmove
+ al %r1,.L7-.L6(%r1) # load address of memmove
br %r1 # jump to memmove
-.L4: .long memmove-.L3
+.L7: .long memmove-.L6
#endif
END(__bcopy)
@@ -67,3 +72,4 @@ END(__bcopy)
#ifndef NO_WEAK_ALIAS
weak_alias (__bcopy, bcopy)
#endif
+
diff --git a/sysdeps/s390/s390-32/memcpy.S b/sysdeps/s390/s390-32/memcpy.S
index 4bbec7c633..9c4b840928 100644
--- a/sysdeps/s390/s390-32/memcpy.S
+++ b/sysdeps/s390/s390-32/memcpy.S
@@ -1,4 +1,4 @@
-/* Set a block of memory to some byte value. For IBM S390
+/* memcpy - copy a block from source to destination. S/390 version.
Copyright (C) 2000, 2001 Free Software Foundation, Inc.
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
@@ -17,25 +17,30 @@
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
-/*
- * R2 = address to destination memory area
- * R3 = address to source memory area
- * R4 = number of bytes to copy
- */
+/* INPUT PARAMETERS
+ %r2 = address of destination memory area
+ %r3 = address of source memory area
+ %r4 = number of bytes to copy. */
#include "sysdep.h"
#include "asm-syntax.h"
.text
ENTRY(memcpy)
- ltr %r5,%r4
+ ltr %r4,%r4
+ jz .L3
+ ahi %r4,-1 # length - 1
+ lr %r1,%r2 # copy destination address
+ lr %r5,%r4
+ sra %r5,8
jz .L1
- lr %r4,%r3 # %r4/%r5 = source ptr/len
- lr %r3,%r5 # %r2/%r3 = dest ptr/len
- lr %r0,%r2 # save source address
-.L0: mvcle %r2,%r4,0 # thats it, MVCLE is your friend
- jo .L0
- lr %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)
+ brct %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)
+