mirror of
git://sourceware.org/git/glibc.git
synced 2024-11-27 03:41:23 +08:00
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
417 lines
9.8 KiB
C
417 lines
9.8 KiB
C
/* _memcopy.c -- subroutines for memory copy functions.
|
|
Copyright (C) 1991-2019 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Torbjorn Granlund (tege@sics.se).
|
|
|
|
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.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
/* BE VERY CAREFUL IF YOU CHANGE THIS CODE...! */
|
|
|
|
#include <stddef.h>
|
|
#include <memcopy.h>
|
|
|
|
/* _wordcopy_fwd_aligned -- Copy block beginning at SRCP to
|
|
block beginning at DSTP with LEN `op_t' words (not LEN bytes!).
|
|
Both SRCP and DSTP should be aligned for memory operations on `op_t's. */
|
|
|
|
#ifndef WORDCOPY_FWD_ALIGNED
|
|
# define WORDCOPY_FWD_ALIGNED _wordcopy_fwd_aligned
|
|
#endif
|
|
|
|
void
|
|
WORDCOPY_FWD_ALIGNED (long int dstp, long int srcp, size_t len)
|
|
{
|
|
op_t a0, a1;
|
|
|
|
switch (len % 8)
|
|
{
|
|
case 2:
|
|
a0 = ((op_t *) srcp)[0];
|
|
srcp -= 6 * OPSIZ;
|
|
dstp -= 7 * OPSIZ;
|
|
len += 6;
|
|
goto do1;
|
|
case 3:
|
|
a1 = ((op_t *) srcp)[0];
|
|
srcp -= 5 * OPSIZ;
|
|
dstp -= 6 * OPSIZ;
|
|
len += 5;
|
|
goto do2;
|
|
case 4:
|
|
a0 = ((op_t *) srcp)[0];
|
|
srcp -= 4 * OPSIZ;
|
|
dstp -= 5 * OPSIZ;
|
|
len += 4;
|
|
goto do3;
|
|
case 5:
|
|
a1 = ((op_t *) srcp)[0];
|
|
srcp -= 3 * OPSIZ;
|
|
dstp -= 4 * OPSIZ;
|
|
len += 3;
|
|
goto do4;
|
|
case 6:
|
|
a0 = ((op_t *) srcp)[0];
|
|
srcp -= 2 * OPSIZ;
|
|
dstp -= 3 * OPSIZ;
|
|
len += 2;
|
|
goto do5;
|
|
case 7:
|
|
a1 = ((op_t *) srcp)[0];
|
|
srcp -= 1 * OPSIZ;
|
|
dstp -= 2 * OPSIZ;
|
|
len += 1;
|
|
goto do6;
|
|
|
|
case 0:
|
|
if (OP_T_THRES <= 3 * OPSIZ && len == 0)
|
|
return;
|
|
a0 = ((op_t *) srcp)[0];
|
|
srcp -= 0 * OPSIZ;
|
|
dstp -= 1 * OPSIZ;
|
|
goto do7;
|
|
case 1:
|
|
a1 = ((op_t *) srcp)[0];
|
|
srcp -=-1 * OPSIZ;
|
|
dstp -= 0 * OPSIZ;
|
|
len -= 1;
|
|
if (OP_T_THRES <= 3 * OPSIZ && len == 0)
|
|
goto do0;
|
|
goto do8; /* No-op. */
|
|
}
|
|
|
|
do
|
|
{
|
|
do8:
|
|
a0 = ((op_t *) srcp)[0];
|
|
((op_t *) dstp)[0] = a1;
|
|
do7:
|
|
a1 = ((op_t *) srcp)[1];
|
|
((op_t *) dstp)[1] = a0;
|
|
do6:
|
|
a0 = ((op_t *) srcp)[2];
|
|
((op_t *) dstp)[2] = a1;
|
|
do5:
|
|
a1 = ((op_t *) srcp)[3];
|
|
((op_t *) dstp)[3] = a0;
|
|
do4:
|
|
a0 = ((op_t *) srcp)[4];
|
|
((op_t *) dstp)[4] = a1;
|
|
do3:
|
|
a1 = ((op_t *) srcp)[5];
|
|
((op_t *) dstp)[5] = a0;
|
|
do2:
|
|
a0 = ((op_t *) srcp)[6];
|
|
((op_t *) dstp)[6] = a1;
|
|
do1:
|
|
a1 = ((op_t *) srcp)[7];
|
|
((op_t *) dstp)[7] = a0;
|
|
|
|
srcp += 8 * OPSIZ;
|
|
dstp += 8 * OPSIZ;
|
|
len -= 8;
|
|
}
|
|
while (len != 0);
|
|
|
|
/* This is the right position for do0. Please don't move
|
|
it into the loop. */
|
|
do0:
|
|
((op_t *) dstp)[0] = a1;
|
|
}
|
|
|
|
/* _wordcopy_fwd_dest_aligned -- Copy block beginning at SRCP to
|
|
block beginning at DSTP with LEN `op_t' words (not LEN bytes!).
|
|
DSTP should be aligned for memory operations on `op_t's, but SRCP must
|
|
*not* be aligned. */
|
|
|
|
#ifndef WORDCOPY_FWD_DEST_ALIGNED
|
|
# define WORDCOPY_FWD_DEST_ALIGNED _wordcopy_fwd_dest_aligned
|
|
#endif
|
|
|
|
void
|
|
WORDCOPY_FWD_DEST_ALIGNED (long int dstp, long int srcp, size_t len)
|
|
{
|
|
op_t a0, a1, a2, a3;
|
|
int sh_1, sh_2;
|
|
|
|
/* Calculate how to shift a word read at the memory operation
|
|
aligned srcp to make it aligned for copy. */
|
|
|
|
sh_1 = 8 * (srcp % OPSIZ);
|
|
sh_2 = 8 * OPSIZ - sh_1;
|
|
|
|
/* Make SRCP aligned by rounding it down to the beginning of the `op_t'
|
|
it points in the middle of. */
|
|
srcp &= -OPSIZ;
|
|
|
|
switch (len % 4)
|
|
{
|
|
case 2:
|
|
a1 = ((op_t *) srcp)[0];
|
|
a2 = ((op_t *) srcp)[1];
|
|
srcp -= 1 * OPSIZ;
|
|
dstp -= 3 * OPSIZ;
|
|
len += 2;
|
|
goto do1;
|
|
case 3:
|
|
a0 = ((op_t *) srcp)[0];
|
|
a1 = ((op_t *) srcp)[1];
|
|
srcp -= 0 * OPSIZ;
|
|
dstp -= 2 * OPSIZ;
|
|
len += 1;
|
|
goto do2;
|
|
case 0:
|
|
if (OP_T_THRES <= 3 * OPSIZ && len == 0)
|
|
return;
|
|
a3 = ((op_t *) srcp)[0];
|
|
a0 = ((op_t *) srcp)[1];
|
|
srcp -=-1 * OPSIZ;
|
|
dstp -= 1 * OPSIZ;
|
|
len += 0;
|
|
goto do3;
|
|
case 1:
|
|
a2 = ((op_t *) srcp)[0];
|
|
a3 = ((op_t *) srcp)[1];
|
|
srcp -=-2 * OPSIZ;
|
|
dstp -= 0 * OPSIZ;
|
|
len -= 1;
|
|
if (OP_T_THRES <= 3 * OPSIZ && len == 0)
|
|
goto do0;
|
|
goto do4; /* No-op. */
|
|
}
|
|
|
|
do
|
|
{
|
|
do4:
|
|
a0 = ((op_t *) srcp)[0];
|
|
((op_t *) dstp)[0] = MERGE (a2, sh_1, a3, sh_2);
|
|
do3:
|
|
a1 = ((op_t *) srcp)[1];
|
|
((op_t *) dstp)[1] = MERGE (a3, sh_1, a0, sh_2);
|
|
do2:
|
|
a2 = ((op_t *) srcp)[2];
|
|
((op_t *) dstp)[2] = MERGE (a0, sh_1, a1, sh_2);
|
|
do1:
|
|
a3 = ((op_t *) srcp)[3];
|
|
((op_t *) dstp)[3] = MERGE (a1, sh_1, a2, sh_2);
|
|
|
|
srcp += 4 * OPSIZ;
|
|
dstp += 4 * OPSIZ;
|
|
len -= 4;
|
|
}
|
|
while (len != 0);
|
|
|
|
/* This is the right position for do0. Please don't move
|
|
it into the loop. */
|
|
do0:
|
|
((op_t *) dstp)[0] = MERGE (a2, sh_1, a3, sh_2);
|
|
}
|
|
|
|
/* _wordcopy_bwd_aligned -- Copy block finishing right before
|
|
SRCP to block finishing right before DSTP with LEN `op_t' words
|
|
(not LEN bytes!). Both SRCP and DSTP should be aligned for memory
|
|
operations on `op_t's. */
|
|
|
|
#ifndef WORDCOPY_BWD_ALIGNED
|
|
# define WORDCOPY_BWD_ALIGNED _wordcopy_bwd_aligned
|
|
#endif
|
|
|
|
void
|
|
WORDCOPY_BWD_ALIGNED (long int dstp, long int srcp, size_t len)
|
|
{
|
|
op_t a0, a1;
|
|
|
|
switch (len % 8)
|
|
{
|
|
case 2:
|
|
srcp -= 2 * OPSIZ;
|
|
dstp -= 1 * OPSIZ;
|
|
a0 = ((op_t *) srcp)[1];
|
|
len += 6;
|
|
goto do1;
|
|
case 3:
|
|
srcp -= 3 * OPSIZ;
|
|
dstp -= 2 * OPSIZ;
|
|
a1 = ((op_t *) srcp)[2];
|
|
len += 5;
|
|
goto do2;
|
|
case 4:
|
|
srcp -= 4 * OPSIZ;
|
|
dstp -= 3 * OPSIZ;
|
|
a0 = ((op_t *) srcp)[3];
|
|
len += 4;
|
|
goto do3;
|
|
case 5:
|
|
srcp -= 5 * OPSIZ;
|
|
dstp -= 4 * OPSIZ;
|
|
a1 = ((op_t *) srcp)[4];
|
|
len += 3;
|
|
goto do4;
|
|
case 6:
|
|
srcp -= 6 * OPSIZ;
|
|
dstp -= 5 * OPSIZ;
|
|
a0 = ((op_t *) srcp)[5];
|
|
len += 2;
|
|
goto do5;
|
|
case 7:
|
|
srcp -= 7 * OPSIZ;
|
|
dstp -= 6 * OPSIZ;
|
|
a1 = ((op_t *) srcp)[6];
|
|
len += 1;
|
|
goto do6;
|
|
|
|
case 0:
|
|
if (OP_T_THRES <= 3 * OPSIZ && len == 0)
|
|
return;
|
|
srcp -= 8 * OPSIZ;
|
|
dstp -= 7 * OPSIZ;
|
|
a0 = ((op_t *) srcp)[7];
|
|
goto do7;
|
|
case 1:
|
|
srcp -= 9 * OPSIZ;
|
|
dstp -= 8 * OPSIZ;
|
|
a1 = ((op_t *) srcp)[8];
|
|
len -= 1;
|
|
if (OP_T_THRES <= 3 * OPSIZ && len == 0)
|
|
goto do0;
|
|
goto do8; /* No-op. */
|
|
}
|
|
|
|
do
|
|
{
|
|
do8:
|
|
a0 = ((op_t *) srcp)[7];
|
|
((op_t *) dstp)[7] = a1;
|
|
do7:
|
|
a1 = ((op_t *) srcp)[6];
|
|
((op_t *) dstp)[6] = a0;
|
|
do6:
|
|
a0 = ((op_t *) srcp)[5];
|
|
((op_t *) dstp)[5] = a1;
|
|
do5:
|
|
a1 = ((op_t *) srcp)[4];
|
|
((op_t *) dstp)[4] = a0;
|
|
do4:
|
|
a0 = ((op_t *) srcp)[3];
|
|
((op_t *) dstp)[3] = a1;
|
|
do3:
|
|
a1 = ((op_t *) srcp)[2];
|
|
((op_t *) dstp)[2] = a0;
|
|
do2:
|
|
a0 = ((op_t *) srcp)[1];
|
|
((op_t *) dstp)[1] = a1;
|
|
do1:
|
|
a1 = ((op_t *) srcp)[0];
|
|
((op_t *) dstp)[0] = a0;
|
|
|
|
srcp -= 8 * OPSIZ;
|
|
dstp -= 8 * OPSIZ;
|
|
len -= 8;
|
|
}
|
|
while (len != 0);
|
|
|
|
/* This is the right position for do0. Please don't move
|
|
it into the loop. */
|
|
do0:
|
|
((op_t *) dstp)[7] = a1;
|
|
}
|
|
|
|
/* _wordcopy_bwd_dest_aligned -- Copy block finishing right
|
|
before SRCP to block finishing right before DSTP with LEN `op_t'
|
|
words (not LEN bytes!). DSTP should be aligned for memory
|
|
operations on `op_t', but SRCP must *not* be aligned. */
|
|
|
|
#ifndef WORDCOPY_BWD_DEST_ALIGNED
|
|
# define WORDCOPY_BWD_DEST_ALIGNED _wordcopy_bwd_dest_aligned
|
|
#endif
|
|
|
|
void
|
|
WORDCOPY_BWD_DEST_ALIGNED (long int dstp, long int srcp, size_t len)
|
|
{
|
|
op_t a0, a1, a2, a3;
|
|
int sh_1, sh_2;
|
|
|
|
/* Calculate how to shift a word read at the memory operation
|
|
aligned srcp to make it aligned for copy. */
|
|
|
|
sh_1 = 8 * (srcp % OPSIZ);
|
|
sh_2 = 8 * OPSIZ - sh_1;
|
|
|
|
/* Make srcp aligned by rounding it down to the beginning of the op_t
|
|
it points in the middle of. */
|
|
srcp &= -OPSIZ;
|
|
srcp += OPSIZ;
|
|
|
|
switch (len % 4)
|
|
{
|
|
case 2:
|
|
srcp -= 3 * OPSIZ;
|
|
dstp -= 1 * OPSIZ;
|
|
a2 = ((op_t *) srcp)[2];
|
|
a1 = ((op_t *) srcp)[1];
|
|
len += 2;
|
|
goto do1;
|
|
case 3:
|
|
srcp -= 4 * OPSIZ;
|
|
dstp -= 2 * OPSIZ;
|
|
a3 = ((op_t *) srcp)[3];
|
|
a2 = ((op_t *) srcp)[2];
|
|
len += 1;
|
|
goto do2;
|
|
case 0:
|
|
if (OP_T_THRES <= 3 * OPSIZ && len == 0)
|
|
return;
|
|
srcp -= 5 * OPSIZ;
|
|
dstp -= 3 * OPSIZ;
|
|
a0 = ((op_t *) srcp)[4];
|
|
a3 = ((op_t *) srcp)[3];
|
|
goto do3;
|
|
case 1:
|
|
srcp -= 6 * OPSIZ;
|
|
dstp -= 4 * OPSIZ;
|
|
a1 = ((op_t *) srcp)[5];
|
|
a0 = ((op_t *) srcp)[4];
|
|
len -= 1;
|
|
if (OP_T_THRES <= 3 * OPSIZ && len == 0)
|
|
goto do0;
|
|
goto do4; /* No-op. */
|
|
}
|
|
|
|
do
|
|
{
|
|
do4:
|
|
a3 = ((op_t *) srcp)[3];
|
|
((op_t *) dstp)[3] = MERGE (a0, sh_1, a1, sh_2);
|
|
do3:
|
|
a2 = ((op_t *) srcp)[2];
|
|
((op_t *) dstp)[2] = MERGE (a3, sh_1, a0, sh_2);
|
|
do2:
|
|
a1 = ((op_t *) srcp)[1];
|
|
((op_t *) dstp)[1] = MERGE (a2, sh_1, a3, sh_2);
|
|
do1:
|
|
a0 = ((op_t *) srcp)[0];
|
|
((op_t *) dstp)[0] = MERGE (a1, sh_1, a2, sh_2);
|
|
|
|
srcp -= 4 * OPSIZ;
|
|
dstp -= 4 * OPSIZ;
|
|
len -= 4;
|
|
}
|
|
while (len != 0);
|
|
|
|
/* This is the right position for do0. Please don't move
|
|
it into the loop. */
|
|
do0:
|
|
((op_t *) dstp)[3] = MERGE (a0, sh_1, a1, sh_2);
|
|
}
|