diff options
Diffstat (limited to 'sysdeps/s390/s390-64/memcpy.S')
| -rw-r--r-- | sysdeps/s390/s390-64/memcpy.S | 88 |
1 files changed, 0 insertions, 88 deletions
diff --git a/sysdeps/s390/s390-64/memcpy.S b/sysdeps/s390/s390-64/memcpy.S deleted file mode 100644 index 3df07b5e23..0000000000 --- a/sysdeps/s390/s390-64/memcpy.S +++ /dev/null @@ -1,88 +0,0 @@ -/* memcpy - copy a block from source to destination. 64 bit S/390 version. - Copyright (C) 2012-2017 Free Software Foundation, Inc. - 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 Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - - -#include <sysdep.h> -#include "asm-syntax.h" - -/* INPUT PARAMETERS - %r2 = address of destination memory area - %r3 = address of source memory area - %r4 = number of bytes to copy. */ - - - .text -ENTRY(__mempcpy) - .machine "z900" - lgr %r1,%r2 # Use as dest - la %r2,0(%r4,%r2) # Return dest + n - j .L_Z900_start -END(__mempcpy) -#ifndef USE_MULTIARCH -libc_hidden_def (__mempcpy) -weak_alias (__mempcpy, mempcpy) -libc_hidden_builtin_def (mempcpy) -#endif - -ENTRY(memcpy) - .machine "z900" - lgr %r1,%r2 # r1: Use as dest ; r2: Return dest -.L_Z900_start: - ltgr %r4,%r4 - je .L_Z900_4 - aghi %r4,-1 - srlg %r5,%r4,8 - ltgr %r5,%r5 - jne .L_Z900_13 -.L_Z900_3: - larl %r5,.L_Z900_15 - ex %r4,0(%r5) -.L_Z900_4: - br %r14 -.L_Z900_13: - cghi %r5,4096 # Switch to mvcle for copies >1MB - jh __memcpy_mvcle -.L_Z900_12: - mvc 0(256,%r1),0(%r3) - la %r1,256(%r1) - la %r3,256(%r3) - brctg %r5,.L_Z900_12 - j .L_Z900_3 -.L_Z900_15: - mvc 0(1,%r1),0(%r3) -END(memcpy) -#ifndef USE_MULTIARCH -libc_hidden_builtin_def (memcpy) -#endif - -ENTRY(__memcpy_mvcle) - # Using as standalone function will result in unexpected - # results since the length field is incremented by 1 in order to - # compensate the changes already done in the functions above. - lgr %r0,%r2 # backup return dest [ + n ] - aghi %r4,1 # length + 1 - lgr %r5,%r4 # source length - lgr %r4,%r3 # source address - lgr %r2,%r1 # destination address - lgr %r3,%r5 # destination length = source length -.L_MVCLE_1: - mvcle %r2,%r4,0 # thats it, MVCLE is your friend - jo .L_MVCLE_1 - lgr %r2,%r0 # return destination address - br %r14 -END(__memcpy_mvcle) |