mirror of
https://sourceware.org/git/glibc.git
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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
92 lines
2.4 KiB
ArmAsm
92 lines
2.4 KiB
ArmAsm
/* Copyright (C) 1996-2019 Free Software Foundation, Inc.
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Contributed by David Mosberger (davidm@cs.arizona.edu).
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This file is part of the GNU C Library.
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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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/* Finds the first bit set in an integer. Optimized for the Alpha
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architecture. */
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#include <sysdep.h>
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.set noreorder
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.set noat
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ENTRY(__ffs)
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#ifdef PROF
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ldgp gp, 0(pv)
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lda AT, _mcount
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jsr AT, (AT), _mcount
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.prologue 1
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zap $16, 0xF0, $16
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br $ffsl..ng
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#else
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.prologue 0
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zap $16, 0xF0, $16
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# FALLTHRU
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#endif
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END(__ffs)
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.align 4
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ENTRY(ffsl)
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#ifdef PROF
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ldgp gp, 0(pv)
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lda AT, _mcount
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jsr AT, (AT), _mcount
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.prologue 1
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$ffsl..ng:
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#else
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.prologue 0
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#endif
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not $16, $1 # e0 :
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ldi $2, -1 # .. e1 :
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cmpbge $1, $2, $3 # e0 : bit N == 1 for byte N == 0
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clr $0 # .. e1 :
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addq $3, 1, $4 # e0 :
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bic $4, $3, $3 # e1 : bit N == 1 for first byte N != 0
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and $3, 0xF0, $4 # e0 :
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and $3, 0xCC, $5 # .. e1 :
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and $3, 0xAA, $6 # e0 :
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cmovne $4, 4, $0 # .. e1 :
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cmovne $5, 2, $5 # e0 :
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cmovne $6, 1, $6 # .. e1 :
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addl $0, $5, $0 # e0 :
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addl $0, $6, $0 # e1 : $0 == N
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extbl $16, $0, $1 # e0 : $1 == byte N
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ldi $2, 1 # .. e1 :
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negq $1, $3 # e0 :
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and $3, $1, $3 # e1 : bit N == least bit set of byte N
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and $3, 0xF0, $4 # e0 :
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and $3, 0xCC, $5 # .. e1 :
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and $3, 0xAA, $6 # e0 :
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cmovne $4, 5, $2 # .. e1 :
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cmovne $5, 2, $5 # e0 :
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cmovne $6, 1, $6 # .. e1 :
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s8addl $0, $2, $0 # e0 : mult byte ofs by 8 and sum
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addl $5, $6, $5 # .. e1 :
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addl $0, $5, $0 # e0 :
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nop # .. e1 :
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cmoveq $16, 0, $0 # e0 : trap input == 0 case.
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ret # .. e1 : 18
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END(ffsl)
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weak_alias (__ffs, ffs)
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libc_hidden_def (__ffs)
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libc_hidden_builtin_def (ffs)
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weak_extern (ffsl)
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weak_alias (ffsl, ffsll)
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