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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
99 lines
2.3 KiB
ArmAsm
99 lines
2.3 KiB
ArmAsm
/* The assembly function for memset. C-SKY ABIV2 version.
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Copyright (C) 2018-2019 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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ENTRY (memset)
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/* Test if len less than 4 bytes. */
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mov r12, r0
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cmplti r2, 8
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bt .L_set_by_byte
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andi r13, r0, 3
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movi r19, 4
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/* Test if dest is not 4 bytes aligned. */
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bnez r13, .L_dest_not_aligned
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/* Hardware can handle unaligned access directly. */
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.L_dest_aligned:
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zextb r1, r1
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mov r3, r1
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lsli r1, 8
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or r1, r3
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lsli r3, r1, 16
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or r3, r1
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/* If dest is aligned, then copy. */
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zext r18, r2, 31, 4
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/* Test if len less than 16 bytes. */
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bez r18, .L_len_less_16bytes
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LABLE_ALIGN
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.L_len_larger_16bytes:
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stw r3, (r0, 0)
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stw r3, (r0, 4)
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stw r3, (r0, 8)
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stw r3, (r0, 12)
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PRE_BNEZAD (r18)
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addi r0, 16
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BNEZAD (r18, .L_len_larger_16bytes)
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.L_len_less_16bytes:
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zext r18, r2, 3, 2
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andi r2, 3
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bez r18, .L_set_by_byte
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.L_len_less_16bytes_loop:
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stw r3, (r0, 0)
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PRE_BNEZAD (r18)
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addi r0, 4
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BNEZAD (r18, .L_len_less_16bytes_loop)
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/* Test if len less than 4 bytes. */
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.L_set_by_byte:
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zext r18, r2, 2, 0
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bez r18, .L_return
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.L_set_by_byte_loop:
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stb r1, (r0, 0)
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PRE_BNEZAD (r18)
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addi r0, 1
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BNEZAD (r18, .L_set_by_byte_loop)
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.L_return:
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mov r0, r12
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rts
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/* If dest is not aligned, just set some bytes makes the dest
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align. */
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.L_dest_not_aligned:
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sub r13, r19, r13
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sub r2, r13
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.L_dest_not_aligned_loop:
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/* Makes the dest align. */
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stb r1, (r0, 0)
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PRE_BNEZAD (r13)
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addi r0, 1
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BNEZAD (r13, .L_dest_not_aligned_loop)
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cmplti r2, 8
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bt .L_set_by_byte
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/* Check whether the src is aligned. */
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br .L_dest_aligned
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END (memset)
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libc_hidden_builtin_def (memset)
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.weak memset
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