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
153 lines
3.9 KiB
ArmAsm
153 lines
3.9 KiB
ArmAsm
/* Optimized memset for PowerPC405,440,464 (32-byte cacheline).
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Copyright (C) 2012-2019 Free Software Foundation, Inc.
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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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#include <sysdep.h>
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/* memset
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r3:destination address and return address
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r4:source integer to copy
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r5:byte count
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r11:sources integer to copy in all 32 bits of reg
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r12:temp return address
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Save return address in r12
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If destinationn is unaligned and count is greater tha 255 bytes
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set 0-3 bytes to make destination aligned
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If count is greater tha 255 bytes and setting zero to memory
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use dbcz to set memeory when we can
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otherwsie do the follwoing
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If 16 or more words to set we use 16 word copy loop.
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Finaly we set 0-15 extra bytes with string store. */
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EALIGN (memset, 5, 0)
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rlwinm r11,r4,0,24,31
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rlwimi r11,r4,8,16,23
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rlwimi r11,r11,16,0,15
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addi r12,r3,0
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cmpwi r5,0x00FF
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ble L(preword8_count_loop)
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cmpwi r4,0x00
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beq L(use_dcbz)
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neg r6,r3
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clrlwi. r6,r6,30
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beq L(preword8_count_loop)
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addi r8,0,1
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mtctr r6
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subi r3,r3,1
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L(unaligned_bytecopy_loop):
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stbu r11,0x1(r3)
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subf. r5,r8,r5
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beq L(end_memset)
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bdnz L(unaligned_bytecopy_loop)
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addi r3,r3,1
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L(preword8_count_loop):
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srwi. r6,r5,4
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beq L(preword2_count_loop)
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mtctr r6
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addi r3,r3,-4
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mr r8,r11
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mr r9,r11
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mr r10,r11
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L(word8_count_loop_no_dcbt):
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stwu r8,4(r3)
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stwu r9,4(r3)
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subi r5,r5,0x10
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stwu r10,4(r3)
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stwu r11,4(r3)
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bdnz L(word8_count_loop_no_dcbt)
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addi r3,r3,4
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L(preword2_count_loop):
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clrlwi. r7,r5,28
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beq L(end_memset)
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mr r8,r11
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mr r9,r11
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mr r10,r11
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mtxer r7
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stswx r8,0,r3
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L(end_memset):
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addi r3,r12,0
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blr
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L(use_dcbz):
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neg r6,r3
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clrlwi. r7,r6,28
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beq L(skip_string_loop)
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mr r8,r11
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mr r9,r11
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mr r10,r11
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subf r5,r7,r5
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mtxer r7
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stswx r8,0,r3
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add r3,r3,r7
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L(skip_string_loop):
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clrlwi r8,r6,27
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srwi. r8,r8,4
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beq L(dcbz_pre_loop)
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mtctr r8
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L(word_loop):
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stw r11,0(r3)
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subi r5,r5,0x10
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stw r11,4(r3)
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stw r11,8(r3)
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stw r11,12(r3)
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addi r3,r3,0x10
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bdnz L(word_loop)
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L(dcbz_pre_loop):
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srwi r6,r5,5
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mtctr r6
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addi r7,0,0
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L(dcbz_loop):
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dcbz r3,r7
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addi r3,r3,0x20
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subi r5,r5,0x20
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bdnz L(dcbz_loop)
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srwi. r6,r5,4
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beq L(postword2_count_loop)
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mtctr r6
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L(postword8_count_loop):
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stw r11,0(r3)
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subi r5,r5,0x10
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stw r11,4(r3)
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stw r11,8(r3)
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stw r11,12(r3)
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addi r3,r3,0x10
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bdnz L(postword8_count_loop)
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L(postword2_count_loop):
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clrlwi. r7,r5,28
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beq L(end_memset)
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mr r8,r11
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mr r9,r11
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mr r10,r11
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mtxer r7
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stswx r8,0,r3
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b L(end_memset)
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END (memset)
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libc_hidden_builtin_def (memset)
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