2000-08-02 15:15:00 +00:00
|
|
|
/* strncpy - copy at most n characters from a string from source to
|
|
|
|
|
destination. For IBM S390
|
|
|
|
|
This file is part of the GNU C Library.
|
2019-01-01 00:11:28 +00:00
|
|
|
Copyright (C) 2000-2019 Free Software Foundation, Inc.
|
2000-08-02 15:15:00 +00:00
|
|
|
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
|
|
|
|
|
|
2001-07-06 04:58:11 +00:00
|
|
|
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.
|
2000-08-02 15:15:00 +00:00
|
|
|
|
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
2001-07-06 04:58:11 +00:00
|
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
2000-08-02 15:15:00 +00:00
|
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
2001-07-06 04:58:11 +00:00
|
|
|
Lesser General Public License for more details.
|
2000-08-02 15:15:00 +00:00
|
|
|
|
2001-07-06 04:58:11 +00:00
|
|
|
You should have received a copy of the GNU Lesser General Public
|
2012-02-09 23:18:22 +00:00
|
|
|
License along with the GNU C Library; if not, see
|
Prefer https to http for gnu.org and fsf.org URLs
Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:
sed -ri '
s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
$(find $(git ls-files) -prune -type f \
! -name '*.po' \
! -name 'ChangeLog*' \
! -path COPYING ! -path COPYING.LIB \
! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
! -path manual/texinfo.tex ! -path scripts/config.guess \
! -path scripts/config.sub ! -path scripts/install-sh \
! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
! -path INSTALL ! -path locale/programs/charmap-kw.h \
! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
! '(' -name configure \
-execdir test -f configure.ac -o -f configure.in ';' ')' \
! '(' -name preconfigure \
-execdir test -f preconfigure.ac ';' ')' \
-print)
and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:
chmod a+x sysdeps/unix/sysv/linux/riscv/configure
# Omit irrelevant whitespace and comment-only changes,
# perhaps from a slightly-different Autoconf version.
git checkout -f \
sysdeps/csky/configure \
sysdeps/hppa/configure \
sysdeps/riscv/configure \
sysdeps/unix/sysv/linux/csky/configure
# Omit changes that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
git checkout -f \
sysdeps/powerpc/powerpc64/ppc-mcount.S \
sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
# Omit change that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
2019-09-07 05:40:42 +00:00
|
|
|
<https://www.gnu.org/licenses/>. */
|
2000-08-02 15:15:00 +00:00
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* R2 = address of destination (dst)
|
|
|
|
|
* R3 = address of source (src)
|
|
|
|
|
* R4 = max of bytes to copy
|
|
|
|
|
*/
|
|
|
|
|
|
2018-12-18 12:57:11 +00:00
|
|
|
#include <ifunc-strncpy.h>
|
2000-08-02 15:15:00 +00:00
|
|
|
#include "sysdep.h"
|
|
|
|
|
#include "asm-syntax.h"
|
|
|
|
|
|
2018-12-18 12:57:11 +00:00
|
|
|
#if HAVE_STRNCPY_Z900_G5
|
|
|
|
|
ENTRY(STRNCPY_Z900_G5)
|
2000-08-02 15:15:00 +00:00
|
|
|
.text
|
|
|
|
|
st %r2,24(%r15) # save dst pointer
|
|
|
|
|
slr %r2,%r3 # %r3 points to src, %r2+%r3 to dst
|
|
|
|
|
lhi %r1,3
|
|
|
|
|
nr %r1,%r4 # last 2 bits of # bytes
|
|
|
|
|
srl %r4,2
|
|
|
|
|
ltr %r4,%r4 # less than 4 bytes to copy ?
|
|
|
|
|
jz .L1
|
|
|
|
|
bras %r5,.L0 # enter loop & load address of a 0
|
|
|
|
|
.long 0
|
|
|
|
|
.L0: icm %r0,8,0(%r3) # first byte
|
|
|
|
|
jz .L3
|
|
|
|
|
icm %r0,4,1(%r3) # second byte
|
|
|
|
|
jz .L4
|
|
|
|
|
icm %r0,2,2(%r3) # third byte
|
|
|
|
|
jz .L5
|
|
|
|
|
icm %r0,1,3(%r3) # fourth byte
|
|
|
|
|
jz .L6
|
|
|
|
|
st %r0,0(%r2,%r3) # store all four to dest.
|
|
|
|
|
la %r3,4(%r3)
|
|
|
|
|
brct %r4,.L0
|
|
|
|
|
.L1: ltr %r1,%r1
|
|
|
|
|
jz .Lexit
|
|
|
|
|
.L2: icm %r0,1,0(%r3)
|
|
|
|
|
stc %r0,0(%r2,%r3)
|
|
|
|
|
la %r3,1(%r3)
|
|
|
|
|
jz .L7
|
|
|
|
|
brct %r1,.L2
|
|
|
|
|
j .Lexit
|
|
|
|
|
.L3: icm %r0,4,0(%r5)
|
|
|
|
|
.L4: icm %r0,2,0(%r5)
|
|
|
|
|
.L5: icm %r0,1,0(%r5)
|
|
|
|
|
.L6: st %r0,0(%r2,%r3)
|
|
|
|
|
la %r3,4(%r3)
|
|
|
|
|
ahi %r4,-1
|
|
|
|
|
j .L8
|
|
|
|
|
.L7: ahi %r1,-1
|
|
|
|
|
.L8: sll %r4,2
|
|
|
|
|
alr %r4,%r1
|
|
|
|
|
alr %r2,%r3 # start of dst area to be zeroed
|
|
|
|
|
lr %r3,%r4
|
|
|
|
|
slr %r4,%r4
|
|
|
|
|
slr %r5,%r5
|
|
|
|
|
.L9: mvcle %r2,%r4,0 # pad dst with zeroes
|
|
|
|
|
jo .L9
|
|
|
|
|
.Lexit: l %r2,24(%r15) # return dst pointer
|
|
|
|
|
br %r14
|
2018-12-18 12:57:11 +00:00
|
|
|
END(STRNCPY_Z900_G5)
|
|
|
|
|
|
|
|
|
|
# if ! HAVE_STRNCPY_IFUNC
|
|
|
|
|
strong_alias (STRNCPY_Z900_G5, strncpy)
|
|
|
|
|
# endif
|
|
|
|
|
|
|
|
|
|
# if defined SHARED && IS_IN (libc)
|
|
|
|
|
strong_alias (STRNCPY_Z900_G5, __GI_strncpy)
|
|
|
|
|
# endif
|
|
|
|
|
#endif
|
