mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-30 08:40:07 +00:00
5a82c74822
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
167 lines
3.9 KiB
ArmAsm
167 lines
3.9 KiB
ArmAsm
/* Copy SRC to DEST returning the address of the terminating '\0' in DEST.
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For SPARC v7.
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Copyright (C) 1996-2019 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jakub Jelinek <jj@ultra.linux.cz>.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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/* Normally, this uses ((xword - 0x01010101) & 0x80808080) test
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to find out if any byte in xword could be zero. This is fast, but
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also gives false alarm for any byte in range 0x81-0xff. It does
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not matter for correctness, as if this test tells us there could
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be some zero byte, we check it byte by byte, but if bytes with
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high bits set are common in the strings, then this will give poor
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performance. You can #define EIGHTBIT_NOT_RARE and the algorithm
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will use one tick slower, but more precise test
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((xword - 0x01010101) & (~xword) & 0x80808080),
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which does not give any false alarms (but if some bits are set,
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one cannot assume from it which bytes are zero and which are not).
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It is yet to be measured, what is the correct default for glibc
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in these days for an average user.
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*/
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.text
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.align 4
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ENTRY(__stpcpy)
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andcc %o1, 3, %g0
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be 20f
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sethi %hi(0x80808080), %o4
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ldub [%o1], %o5
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stb %o5, [%o0]
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cmp %o5, 0
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add %o0, 1, %o0
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be 1f
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add %o1, 1, %o1
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andcc %o1, 3, %g0
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be 4f
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or %o4, %lo(0x80808080), %o3
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ldub [%o1], %o5
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stb %o5, [%o0]
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cmp %o5, 0
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add %o0, 1, %o0
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be 1f
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add %o1, 1, %o1
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andcc %o1, 3, %g0
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be 5f
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sethi %hi(0x01010101), %o4
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ldub [%o1], %o5
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stb %o5, [%o0]
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cmp %o5, 0
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add %o0, 1, %o0
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be 1f
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add %o1, 1, %o1
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b 6f
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or %o4, %lo(0x01010101), %o2
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1: retl
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add %o0, -1, %o0
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20: or %o4, %lo(0x80808080), %o3
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4: sethi %hi(0x01010101), %o4
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5: or %o4, %lo(0x01010101), %o2
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6: andcc %o0, 3, %g0
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bne 16f
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sub %g0, 4, %g1
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11: add %g1, 4, %g1
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ld [%o1 + %g1], %o5
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sub %o5, %o2, %o4
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#ifdef EIGHTBIT_NOT_RARE
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andn %o4, %o5, %o4
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#endif
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andcc %o4, %o3, %g0
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be,a 11b
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st %o5, [%o0 + %g1]
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/* Check every byte. */
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srl %o5, 24, %g5
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andcc %g5, 0xff, %g0
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be 14f
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srl %o5, 16, %g5
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andcc %g5, 0xff, %g0
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be 13f
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srl %o5, 8, %g5
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andcc %g5, 0xff, %g0
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be 12f
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andcc %o5, 0xff, %g0
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bne 11b
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st %o5, [%o0 + %g1]
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add %o0, %g1, %o0
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retl
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add %o0, 3, %o0
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12: srl %o5, 16, %o5
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sth %o5, [%o0 + %g1]
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add %g1, 2, %g1
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stb %g0, [%o0 + %g1]
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retl
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add %o0, %g1, %o0
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13: srl %o5, 16, %o5
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sth %o5, [%o0 + %g1]
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add %g1, 1, %g1
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retl
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add %o0, %g1, %o0
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14: stb %g0, [%o0 + %g1]
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retl
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add %o0, %g1, %o0
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15: srl %o5, 24, %o4
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srl %o5, 16, %g1
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stb %o4, [%o0]
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srl %o5, 8, %g4
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stb %g1, [%o0 + 1]
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stb %g4, [%o0 + 2]
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stb %o5, [%o0 + 3]
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add %o0, 4, %o0
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16: ld [%o1], %o5
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sub %o5, %o2, %o4
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andcc %o4, %o3, %g0
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be 15b
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add %o1, 4, %o1
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/* Check every byte. */
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srl %o5, 24, %g5
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andcc %g5, 0xff, %g4
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be 19f
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stb %g4, [%o0]
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srl %o5, 16, %g5
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andcc %g5, 0xff, %g4
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be 18f
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stb %g4, [%o0 + 1]
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srl %o5, 8, %g5
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andcc %g5, 0xff, %g4
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be 17f
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stb %g4, [%o0 + 2]
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andcc %o5, 0xff, %g4
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stb %g4, [%o0 + 3]
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bne 16b
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add %o0, 4, %o0
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retl
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sub %o0, 1, %o0
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17: retl
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add %o0, 2, %o0
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18: retl
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add %o0, 1, %o0
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19: retl
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nop
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END(__stpcpy)
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weak_alias (__stpcpy, stpcpy)
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libc_hidden_def (__stpcpy)
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libc_hidden_builtin_def (stpcpy)
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