Add support for Intel's XScale processor
This commit is contained in:
Nick Clifton
parent
09872ef885
commit
0ffc3b94a0
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@ -1,3 +1,22 @@
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2000-11-29 Nick Clifton <nickc@redhat.com>
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* configure.host: Add xscale target.
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* libc/machine/xscale: New directory.
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* libc/machine/xscale/Makefile.am: New file.
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* libc/machine/xscale/Makefile.in: New file.
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* libc/machine/xscale/aclocal.m4: New file.
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* libc/machine/xscale/configure: New file.
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* libc/machine/xscale/configure.in: New file.
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* libc/machine/xscale/memchr.S: New file.
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* libc/machine/xscale/memcmp.S: New file.
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* libc/machine/xscale/memcpy.S: New file.
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* libc/machine/xscale/memmove.S: New file.
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* libc/machine/xscale/memset.S: New file.
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* libc/machine/xscale/strchr.S: New file.
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* libc/machine/xscale/strcmp.S: New file.
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* libc/machine/xscale/strcpy.S: New file.
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* libc/machine/xscale/strlen.S: New file.
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Sat Nov 25 11:24:00 2000 Corinna Vinschen <vinschen@cygnus.com>
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* libc/include/sys/types.h: Change i to `__i' in FD_ZERO macro to
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@ -145,6 +145,9 @@ case "${host_cpu}" in
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strongarm)
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machine_dir=arm
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;;
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xscale)
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machine_dir=xscale
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;;
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thumb)
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machine_dir=arm
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;;
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@ -263,6 +266,9 @@ case "${host}" in
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strongarm-*-*)
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sys_dir=arm
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;;
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xscale-*-*)
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sys_dir=arm
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;;
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thumb-*-*)
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sys_dir=arm
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;;
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@ -422,6 +428,11 @@ case "${host}" in
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newlib_cflags="${newlib_cflags} -DABORT_PROVIDED -DHAVE_GETTIMEOFDAY"
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newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"
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;;
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xscale-*-*)
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syscall_dir=syscalls
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newlib_cflags="${newlib_cflags} -DABORT_PROVIDED -DHAVE_GETTIMEOFDAY"
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newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"
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;;
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thumb-*-pe)
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syscall_dir=syscalls
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newlib_cflags="${newlib_cflags} -DABORT_PROVIDED -DHAVE_GETTIMEOFDAY"
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@ -0,0 +1,14 @@
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## Process this file with automake to generate Makefile.in
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lib_a_SOURCES = \
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memchr.c memcmp.c memcpy.c memmove.c memset.c \
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strchr.c strcmp.c strcpy.c strlen.c
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ACLOCAL_AMFLAGS = -I ../../..
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@ -0,0 +1,322 @@
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# gives unlimited permission to copy and/or distribute it,
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# with or without modifications, as long as this notice is preserved.
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# This program is distributed in the hope that it will be useful,
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# PARTICULAR PURPOSE.
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lib_a_SOURCES = \
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memchr.c memcmp.c memcpy.c memmove.c memset.c \
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strchr.c strcmp.c strcpy.c strlen.c
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lib_a_OBJECTS = memchr.o memcmp.o memcpy.o memmove.o memset.o strchr.o \
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strcmp.o strcpy.o strlen.o
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@ -0,0 +1,282 @@
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dnl aclocal.m4 generated automatically by aclocal 1.4
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dnl Copyright (C) 1994, 1995-8, 1999 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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||||
dnl gives unlimited permission to copy and/or distribute it,
|
||||
dnl with or without modifications, as long as this notice is preserved.
|
||||
|
||||
dnl This program is distributed in the hope that it will be useful,
|
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dnl but WITHOUT ANY WARRANTY, to the extent permitted by law; without
|
||||
dnl even the implied warranty of MERCHANTABILITY or FITNESS FOR A
|
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dnl PARTICULAR PURPOSE.
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||||
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||||
dnl This provides configure definitions used by all the newlib
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dnl configure.in files.
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dnl Basic newlib configury. This calls basic introductory stuff,
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|
||||
if test "[$]{srcdir}" = "."; then
|
||||
if test "[$]{with_target_subdir}" != "."; then
|
||||
newlib_basedir="[$]{srcdir}/[$]{with_multisrctop}../$1"
|
||||
else
|
||||
newlib_basedir="[$]{srcdir}/[$]{with_multisrctop}$1"
|
||||
fi
|
||||
else
|
||||
newlib_basedir="[$]{srcdir}/$1"
|
||||
fi
|
||||
AC_SUBST(newlib_basedir)
|
||||
|
||||
AC_CANONICAL_HOST
|
||||
|
||||
AM_INIT_AUTOMAKE(newlib, 1.8.2)
|
||||
|
||||
# FIXME: We temporarily define our own version of AC_PROG_CC. This is
|
||||
# copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
|
||||
# are probably using a cross compiler, which will not be able to fully
|
||||
# link an executable. This should really be fixed in autoconf
|
||||
# itself.
|
||||
|
||||
AC_DEFUN(LIB_AC_PROG_CC,
|
||||
[AC_BEFORE([$0], [AC_PROG_CPP])dnl
|
||||
AC_CHECK_PROG(CC, gcc, gcc)
|
||||
if test -z "$CC"; then
|
||||
AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
|
||||
test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
|
||||
fi
|
||||
|
||||
AC_PROG_CC_GNU
|
||||
|
||||
if test $ac_cv_prog_gcc = yes; then
|
||||
GCC=yes
|
||||
dnl Check whether -g works, even if CFLAGS is set, in case the package
|
||||
dnl plays around with CFLAGS (such as to build both debugging and
|
||||
dnl normal versions of a library), tasteless as that idea is.
|
||||
ac_test_CFLAGS="${CFLAGS+set}"
|
||||
ac_save_CFLAGS="$CFLAGS"
|
||||
CFLAGS=
|
||||
AC_PROG_CC_G
|
||||
if test "$ac_test_CFLAGS" = set; then
|
||||
CFLAGS="$ac_save_CFLAGS"
|
||||
elif test $ac_cv_prog_cc_g = yes; then
|
||||
CFLAGS="-g -O2"
|
||||
else
|
||||
CFLAGS="-O2"
|
||||
fi
|
||||
else
|
||||
GCC=
|
||||
test "${CFLAGS+set}" = set || CFLAGS="-g"
|
||||
fi
|
||||
])
|
||||
|
||||
LIB_AC_PROG_CC
|
||||
|
||||
# AC_CHECK_TOOL does AC_REQUIRE (AC_CANONICAL_BUILD). If we don't
|
||||
# run it explicitly here, it will be run implicitly before
|
||||
# NEWLIB_CONFIGURE, which doesn't work because that means that it will
|
||||
# be run before AC_CANONICAL_HOST.
|
||||
AC_CANONICAL_BUILD
|
||||
|
||||
AC_CHECK_TOOL(AS, as)
|
||||
AC_CHECK_TOOL(AR, ar)
|
||||
AC_CHECK_TOOL(RANLIB, ranlib, :)
|
||||
|
||||
AC_PROG_INSTALL
|
||||
|
||||
AM_MAINTAINER_MODE
|
||||
|
||||
# We need AC_EXEEXT to keep automake happy in cygnus mode. However,
|
||||
# at least currently, we never actually build a program, so we never
|
||||
# need to use $(EXEEXT). Moreover, the test for EXEEXT normally
|
||||
# fails, because we are probably configuring with a cross compiler
|
||||
# which can't create executables. So we include AC_EXEEXT to keep
|
||||
# automake happy, but we don't execute it, since we don't care about
|
||||
# the result.
|
||||
if false; then
|
||||
AC_EXEEXT
|
||||
fi
|
||||
|
||||
. [$]{newlib_basedir}/configure.host
|
||||
|
||||
case [$]{newlib_basedir} in
|
||||
/* | [A-Za-z]:[/\\]*) newlib_flagbasedir=[$]{newlib_basedir} ;;
|
||||
*) newlib_flagbasedir='[$](top_builddir)/'[$]{newlib_basedir} ;;
|
||||
esac
|
||||
|
||||
newlib_cflags="[$]{newlib_cflags} -I"'[$](top_builddir)'"/$1/targ-include -I[$]{newlib_flagbasedir}/libc/include"
|
||||
case "${host}" in
|
||||
*-*-cygwin*)
|
||||
newlib_cflags="[$]{newlib_cflags} -I[$]{newlib_flagbasedir}/../winsup/cygwin/include -I[$]{newlib_flagbasedir}/../winsup/w32api/include"
|
||||
;;
|
||||
esac
|
||||
|
||||
newlib_cflags="[$]{newlib_cflags} -fno-builtin"
|
||||
|
||||
NEWLIB_CFLAGS=${newlib_cflags}
|
||||
AC_SUBST(NEWLIB_CFLAGS)
|
||||
|
||||
AC_SUBST(machine_dir)
|
||||
AC_SUBST(sys_dir)
|
||||
])
|
||||
|
||||
# Do all the work for Automake. This macro actually does too much --
|
||||
# some checks are only needed if your package does certain things.
|
||||
# But this isn't really a big deal.
|
||||
|
||||
# serial 1
|
||||
|
||||
dnl Usage:
|
||||
dnl AM_INIT_AUTOMAKE(package,version, [no-define])
|
||||
|
||||
AC_DEFUN(AM_INIT_AUTOMAKE,
|
||||
[AC_REQUIRE([AC_PROG_INSTALL])
|
||||
PACKAGE=[$1]
|
||||
AC_SUBST(PACKAGE)
|
||||
VERSION=[$2]
|
||||
AC_SUBST(VERSION)
|
||||
dnl test to see if srcdir already configured
|
||||
if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then
|
||||
AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
|
||||
fi
|
||||
ifelse([$3],,
|
||||
AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
|
||||
AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package]))
|
||||
AC_REQUIRE([AM_SANITY_CHECK])
|
||||
AC_REQUIRE([AC_ARG_PROGRAM])
|
||||
dnl FIXME This is truly gross.
|
||||
missing_dir=`cd $ac_aux_dir && pwd`
|
||||
AM_MISSING_PROG(ACLOCAL, aclocal, $missing_dir)
|
||||
AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir)
|
||||
AM_MISSING_PROG(AUTOMAKE, automake, $missing_dir)
|
||||
AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir)
|
||||
AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir)
|
||||
AC_REQUIRE([AC_PROG_MAKE_SET])])
|
||||
|
||||
#
|
||||
# Check to make sure that the build environment is sane.
|
||||
#
|
||||
|
||||
AC_DEFUN(AM_SANITY_CHECK,
|
||||
[AC_MSG_CHECKING([whether build environment is sane])
|
||||
# Just in case
|
||||
sleep 1
|
||||
echo timestamp > conftestfile
|
||||
# Do `set' in a subshell so we don't clobber the current shell's
|
||||
# arguments. Must try -L first in case configure is actually a
|
||||
# symlink; some systems play weird games with the mod time of symlinks
|
||||
# (eg FreeBSD returns the mod time of the symlink's containing
|
||||
# directory).
|
||||
if (
|
||||
set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null`
|
||||
if test "[$]*" = "X"; then
|
||||
# -L didn't work.
|
||||
set X `ls -t $srcdir/configure conftestfile`
|
||||
fi
|
||||
if test "[$]*" != "X $srcdir/configure conftestfile" \
|
||||
&& test "[$]*" != "X conftestfile $srcdir/configure"; then
|
||||
|
||||
# If neither matched, then we have a broken ls. This can happen
|
||||
# if, for instance, CONFIG_SHELL is bash and it inherits a
|
||||
# broken ls alias from the environment. This has actually
|
||||
# happened. Such a system could not be considered "sane".
|
||||
AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
|
||||
alias in your environment])
|
||||
fi
|
||||
|
||||
test "[$]2" = conftestfile
|
||||
)
|
||||
then
|
||||
# Ok.
|
||||
:
|
||||
else
|
||||
AC_MSG_ERROR([newly created file is older than distributed files!
|
||||
Check your system clock])
|
||||
fi
|
||||
rm -f conftest*
|
||||
AC_MSG_RESULT(yes)])
|
||||
|
||||
dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY)
|
||||
dnl The program must properly implement --version.
|
||||
AC_DEFUN(AM_MISSING_PROG,
|
||||
[AC_MSG_CHECKING(for working $2)
|
||||
# Run test in a subshell; some versions of sh will print an error if
|
||||
# an executable is not found, even if stderr is redirected.
|
||||
# Redirect stdin to placate older versions of autoconf. Sigh.
|
||||
if ($2 --version) < /dev/null > /dev/null 2>&1; then
|
||||
$1=$2
|
||||
AC_MSG_RESULT(found)
|
||||
else
|
||||
$1="$3/missing $2"
|
||||
AC_MSG_RESULT(missing)
|
||||
fi
|
||||
AC_SUBST($1)])
|
||||
|
||||
# Add --enable-maintainer-mode option to configure.
|
||||
# From Jim Meyering
|
||||
|
||||
# serial 1
|
||||
|
||||
AC_DEFUN(AM_MAINTAINER_MODE,
|
||||
[AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
|
||||
dnl maintainer-mode is disabled by default
|
||||
AC_ARG_ENABLE(maintainer-mode,
|
||||
[ --enable-maintainer-mode enable make rules and dependencies not useful
|
||||
(and sometimes confusing) to the casual installer],
|
||||
USE_MAINTAINER_MODE=$enableval,
|
||||
USE_MAINTAINER_MODE=no)
|
||||
AC_MSG_RESULT($USE_MAINTAINER_MODE)
|
||||
AM_CONDITIONAL(MAINTAINER_MODE, test $USE_MAINTAINER_MODE = yes)
|
||||
MAINT=$MAINTAINER_MODE_TRUE
|
||||
AC_SUBST(MAINT)dnl
|
||||
]
|
||||
)
|
||||
|
||||
# Define a conditional.
|
||||
|
||||
AC_DEFUN(AM_CONDITIONAL,
|
||||
[AC_SUBST($1_TRUE)
|
||||
AC_SUBST($1_FALSE)
|
||||
if $2; then
|
||||
$1_TRUE=
|
||||
$1_FALSE='#'
|
||||
else
|
||||
$1_TRUE='#'
|
||||
$1_FALSE=
|
||||
fi])
|
||||
|
||||
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,12 @@
|
|||
dnl This is the newlib/libc/machine/strongarm2 configure.in file.
|
||||
dnl Process this file with autoconf to produce a configure script.
|
||||
|
||||
AC_PREREQ(2.5)
|
||||
AC_INIT(Makefile.am)
|
||||
|
||||
dnl Can't be done in NEWLIB_CONFIGURE because that confuses automake.
|
||||
AC_CONFIG_AUX_DIR(../../../..)
|
||||
|
||||
NEWLIB_CONFIGURE(../../..)
|
||||
|
||||
AC_OUTPUT(Makefile)
|
||||
|
|
@ -0,0 +1,102 @@
|
|||
#if defined __thumb__
|
||||
|
||||
#include "../../string/memchr.c"
|
||||
|
||||
#else
|
||||
|
||||
#include <string.h>
|
||||
#include "xscale.h"
|
||||
|
||||
void *
|
||||
memchr (const void *start, int c, size_t len)
|
||||
{
|
||||
const char *str = start;
|
||||
|
||||
if (len == 0)
|
||||
return 0;
|
||||
|
||||
asm (PRELOADSTR ("%0") : : "r" (start));
|
||||
|
||||
c &= 0xff;
|
||||
|
||||
#ifndef __OPTIMIZE_SIZE__
|
||||
/* Skip unaligned part. */
|
||||
if ((long)str & 3)
|
||||
{
|
||||
str--;
|
||||
do
|
||||
{
|
||||
if (*++str == c)
|
||||
return (void *)str;
|
||||
}
|
||||
while (((long)str & 3) != 0 && --len > 0);
|
||||
}
|
||||
|
||||
if (len > 3)
|
||||
{
|
||||
unsigned int c2 = c + (c << 8);
|
||||
c2 += c2 << 16;
|
||||
|
||||
/* Load two constants:
|
||||
R7 = 0xfefefeff [ == ~(0x80808080 << 1) ]
|
||||
R6 = 0x80808080 */
|
||||
|
||||
asm (
|
||||
"mov r6, #0x80
|
||||
add r6, r6, #0x8000
|
||||
add r6, r6, r6, lsl #16
|
||||
mvn r7, r6, lsl #1
|
||||
|
||||
0:
|
||||
cmp %1, #0x7
|
||||
bls 1f
|
||||
|
||||
ldmia %0!, { r3, r9 }
|
||||
" PRELOADSTR ("%0") "
|
||||
sub %1, %1, #8
|
||||
eor r3, r3, %2
|
||||
eor r9, r9, %2
|
||||
add r2, r3, r7
|
||||
add r8, r9, r7
|
||||
bic r2, r2, r3
|
||||
bic r8, r8, r9
|
||||
and r1, r2, r6
|
||||
and r9, r8, r6
|
||||
orrs r1, r1, r9
|
||||
beq 0b
|
||||
|
||||
add %1, %1, #8
|
||||
sub %0, %0, #8
|
||||
1:
|
||||
cmp %1, #0x3
|
||||
bls 2f
|
||||
|
||||
ldr r3, [%0], #4
|
||||
" PRELOADSTR ("%0") "
|
||||
sub %1, %1, #4
|
||||
eor r3, r3, %2
|
||||
add r2, r3, r7
|
||||
bic r2, r2, r3
|
||||
ands r1, r2, r6
|
||||
beq 1b
|
||||
|
||||
sub %0, %0, #4
|
||||
add %1, %1, #4
|
||||
2:
|
||||
"
|
||||
: "=&r" (str), "=&r" (len)
|
||||
: "r" (c2), "0" (str), "1" (len)
|
||||
: "r1", "r2", "r3", "r6", "r7", "r8", "r9", "cc");
|
||||
}
|
||||
#endif
|
||||
|
||||
while (len-- > 0)
|
||||
{
|
||||
if (*str == c)
|
||||
return (void *)str;
|
||||
str++;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
|
@ -0,0 +1,109 @@
|
|||
#if defined __thumb__
|
||||
|
||||
#include "../../string/memcmp.c"
|
||||
|
||||
#else
|
||||
|
||||
#include <string.h>
|
||||
#include "xscale.h"
|
||||
|
||||
int
|
||||
memcmp (const void *s1, const void *s2, size_t len)
|
||||
{
|
||||
int result;
|
||||
asm (
|
||||
#ifndef __OPTIMIZE_SIZE__
|
||||
"
|
||||
cmp %2, #0x3
|
||||
bls 6f
|
||||
and r2, %0, #0x3
|
||||
and r3, %1, #0x3
|
||||
cmp r2, r3
|
||||
bne 6f
|
||||
mov lr, %0
|
||||
mov r4, %1
|
||||
cmp r2, #0x0
|
||||
beq 3f
|
||||
b 1f
|
||||
0:
|
||||
ldrb r2, [lr], #1 @ zero_extendqisi2
|
||||
" PRELOADSTR("lr") "
|
||||
ldrb r3, [r4], #1 @ zero_extendqisi2
|
||||
" PRELOADSTR("r4") "
|
||||
cmp r2, r3
|
||||
bne 5f
|
||||
tst lr, #0x3
|
||||
beq 3f
|
||||
1:
|
||||
sub %2, %2, #1
|
||||
cmn %2, #0x1
|
||||
bne 0b
|
||||
b 4f
|
||||
|
||||
0:
|
||||
cmp %2, #0x7
|
||||
bls 3f
|
||||
ldmia lr,{r2, r3}
|
||||
ldmia r4,{r5, r6}
|
||||
sub %2, %2, #0x4
|
||||
cmp r2, r5
|
||||
bne 1f
|
||||
sub %2, %2, #0x4
|
||||
add lr, lr, #0x4
|
||||
add r4, r4, #0x4
|
||||
cmp r3, r6
|
||||
beq 0b
|
||||
1:
|
||||
add %2, %2, #0x4
|
||||
sub %0, lr, #0x4
|
||||
sub %1, r4, #0x4
|
||||
b 6f
|
||||
3:
|
||||
cmp %2, #0x3
|
||||
bls 1f
|
||||
ldr r2, [lr], #4
|
||||
ldr r3, [r4], #4
|
||||
sub %2, %2, #4
|
||||
cmp r2, r3
|
||||
bne 1f
|
||||
0:
|
||||
cmp %2, #0x3
|
||||
bls 1f
|
||||
ldr r2, [lr], #4
|
||||
" PRELOADSTR("lr") "
|
||||
ldr r3, [r4], #4
|
||||
" PRELOADSTR("r4") "
|
||||
sub %2, %2, #4
|
||||
cmp r2, r3
|
||||
beq 0b
|
||||
1:
|
||||
sub %0, lr, #0x4
|
||||
sub %1, r4, #0x4
|
||||
add %2, %2, #4
|
||||
"
|
||||
#endif /* !__OPTIMIZE_SIZE__ */
|
||||
"
|
||||
6:
|
||||
sub %2, %2, #1
|
||||
cmn %2, #0x1
|
||||
beq 4f
|
||||
0:
|
||||
ldrb r2, [%0], #1 @ zero_extendqisi2
|
||||
" PRELOADSTR("%0") "
|
||||
ldrb r3, [%1], #1 @ zero_extendqisi2
|
||||
" PRELOADSTR("%1") "
|
||||
cmp r2, r3
|
||||
bne 5f
|
||||
sub %2, %2, #1
|
||||
cmn %2, #0x1
|
||||
bne 0b
|
||||
4:
|
||||
mov r3, r2
|
||||
5:
|
||||
rsb %0, r3, r2"
|
||||
: "=r" (result), "=&r" (s2), "=&r" (len)
|
||||
: "0" (s1), "1" (s2), "2" (len)
|
||||
: "r2", "r3", "r4", "r5", "r6", "cc");
|
||||
return result;
|
||||
}
|
||||
#endif
|
||||
|
|
@ -0,0 +1,101 @@
|
|||
#if defined __thumb__
|
||||
|
||||
#include "../../string/memcpy.c"
|
||||
|
||||
#else
|
||||
|
||||
#include <string.h>
|
||||
#include "xscale.h"
|
||||
|
||||
void *
|
||||
memcpy (void *dst0, const void *src0, size_t len)
|
||||
{
|
||||
int dummy;
|
||||
asm volatile (
|
||||
#ifndef __OPTIMIZE_SIZE__
|
||||
"cmp %2, #0x3
|
||||
bls 3f
|
||||
and lr, %1, #0x3
|
||||
and r3, %0, #0x3
|
||||
cmp lr, r3
|
||||
bne 3f
|
||||
cmp lr, #0x0
|
||||
beq 2f
|
||||
b 1f
|
||||
0:
|
||||
ldrb r3, [%1], #1
|
||||
"
|
||||
PRELOADSTR ("%1")
|
||||
"
|
||||
tst %1, #0x3
|
||||
strb r3, [%0], #1
|
||||
beq 3f
|
||||
1:
|
||||
sub %2, %2, #1
|
||||
cmn %2, #1
|
||||
bne 0b
|
||||
2:
|
||||
cmp %2, #0xf
|
||||
bls 1f
|
||||
0:
|
||||
ldmia %1!, { r3, r4, r5, lr }
|
||||
"
|
||||
PRELOADSTR ("%1")
|
||||
"
|
||||
|
||||
sub %2, %2, #16
|
||||
cmp %2, #0xf
|
||||
stmia %0!, { r3, r4, r5, lr }
|
||||
bhi 0b
|
||||
1:
|
||||
cmp %2, #0x7
|
||||
bls 1f
|
||||
0:
|
||||
ldmia %1!, { r3, r4 }
|
||||
"
|
||||
PRELOADSTR ("%1")
|
||||
"
|
||||
|
||||
sub %2, %2, #8
|
||||
cmp %2, #0x7
|
||||
stmia %0!, { r3, r4 }
|
||||
bhi 0b
|
||||
1:
|
||||
cmp %2, #0x3
|
||||
bls 3f
|
||||
0:
|
||||
sub %2, %2, #4
|
||||
ldr r3, [%1], #4
|
||||
"
|
||||
PRELOADSTR ("%1")
|
||||
"
|
||||
|
||||
cmp %2, #0x3
|
||||
str r3, [%0], #4
|
||||
bhi 0b
|
||||
"
|
||||
#endif /* !__OPTIMIZE_SIZE__ */
|
||||
"
|
||||
3:
|
||||
"
|
||||
PRELOADSTR ("%1")
|
||||
"
|
||||
sub %2, %2, #1
|
||||
cmn %2, #1
|
||||
beq 1f
|
||||
0:
|
||||
sub %2, %2, #1
|
||||
ldrb r3, [%1], #1
|
||||
"
|
||||
PRELOADSTR ("%1")
|
||||
"
|
||||
cmn %2, #1
|
||||
strb r3, [%0], #1
|
||||
bne 0b
|
||||
1:"
|
||||
: "=&r" (dummy), "=&r" (src0), "=&r" (len)
|
||||
: "0" (dst0), "1" (src0), "2" (len)
|
||||
: "memory", "lr", "r3", "r4", "r5", "cc");
|
||||
return dst0;
|
||||
}
|
||||
#endif
|
||||
|
|
@ -0,0 +1,122 @@
|
|||
#if defined __thumb__
|
||||
|
||||
#include "../../string/memmove.c"
|
||||
|
||||
#else
|
||||
|
||||
#include <string.h>
|
||||
#include "xscale.h"
|
||||
|
||||
static inline void *
|
||||
do_memcpy (void *dst0, const void *src0, size_t len)
|
||||
{
|
||||
int dummy;
|
||||
asm volatile (
|
||||
#ifndef __OPTIMIZE_SIZE__
|
||||
"cmp %2, #0x3
|
||||
bls 3f
|
||||
and lr, %1, #0x3
|
||||
and r3, %0, #0x3
|
||||
cmp lr, r3
|
||||
bne 3f
|
||||
cmp lr, #0x0
|
||||
beq 2f
|
||||
b 1f
|
||||
0:
|
||||
ldrb r3, [%1], #1
|
||||
"
|
||||
PRELOADSTR ("%1")
|
||||
"
|
||||
tst %1, #0x3
|
||||
strb r3, [%0], #1
|
||||
beq 3f
|
||||
1:
|
||||
sub %2, %2, #1
|
||||
cmn %2, #1
|
||||
bne 0b
|
||||
2:
|
||||
cmp %2, #0xf
|
||||
bls 1f
|
||||
0:
|
||||
ldmia %1!, { r3, r4, r5, lr }
|
||||
"
|
||||
PRELOADSTR ("%1")
|
||||
"
|
||||
|
||||
sub %2, %2, #16
|
||||
cmp %2, #0xf
|
||||
stmia %0!, { r3, r4, r5, lr }
|
||||
bhi 0b
|
||||
1:
|
||||
cmp %2, #0x7
|
||||
bls 1f
|
||||
0:
|
||||
ldmia %1!, { r3, r4 }
|
||||
"
|
||||
PRELOADSTR ("%1")
|
||||
"
|
||||
|
||||
sub %2, %2, #8
|
||||
cmp %2, #0x7
|
||||
stmia %0!, { r3, r4 }
|
||||
bhi 0b
|
||||
1:
|
||||
cmp %2, #0x3
|
||||
bls 3f
|
||||
0:
|
||||
sub %2, %2, #4
|
||||
ldr r3, [%1], #4
|
||||
"
|
||||
PRELOADSTR ("%1")
|
||||
"
|
||||
|
||||
cmp %2, #0x3
|
||||
str r3, [%0], #4
|
||||
bhi 0b
|
||||
"
|
||||
#endif /* !__OPTIMIZE_SIZE__ */
|
||||
"
|
||||
3:
|
||||
"
|
||||
PRELOADSTR ("%1")
|
||||
"
|
||||
sub %2, %2, #1
|
||||
cmn %2, #1
|
||||
beq 1f
|
||||
0:
|
||||
sub %2, %2, #1
|
||||
ldrb r3, [%1], #1
|
||||
"
|
||||
PRELOADSTR ("%1")
|
||||
"
|
||||
cmn %2, #1
|
||||
strb r3, [%0], #1
|
||||
bne 0b
|
||||
1:"
|
||||
: "=&r" (dummy), "=&r" (src0), "=&r" (len)
|
||||
: "0" (dst0), "1" (src0), "2" (len)
|
||||
: "memory", "lr", "r3", "r4", "r5", "cc");
|
||||
return dst0;
|
||||
}
|
||||
|
||||
void *
|
||||
memmove (void *dst, const void *src, size_t len)
|
||||
{
|
||||
char *d = dst;
|
||||
const char *s = src;
|
||||
|
||||
if (s < d && d < s + len)
|
||||
{
|
||||
/* Destructive overlap...have to copy backwards. */
|
||||
s += len;
|
||||
d += len;
|
||||
|
||||
while (len--)
|
||||
*--d = *--s;
|
||||
|
||||
return dst;
|
||||
}
|
||||
else
|
||||
return do_memcpy (dst, src, len);
|
||||
}
|
||||
#endif
|
||||
|
|
@ -0,0 +1,80 @@
|
|||
#if defined __thumb__
|
||||
|
||||
#include "../../string/memset.c"
|
||||
|
||||
#else
|
||||
|
||||
#include <string.h>
|
||||
#include "xscale.h"
|
||||
|
||||
void *
|
||||
memset (void *dst, int c, size_t len)
|
||||
{
|
||||
int dummy;
|
||||
asm volatile ("tst %0, #0x3"
|
||||
#ifndef __OPTIMIZE_SIZE__
|
||||
"
|
||||
beq 1f
|
||||
b 2f
|
||||
0:
|
||||
strb %1, [%0], #1
|
||||
tst %0, #0x3
|
||||
beq 1f
|
||||
2:
|
||||
movs r3, %2
|
||||
sub %2, %2, #1
|
||||
bne 0b
|
||||
1:
|
||||
cmp %2, #0x3
|
||||
bls 2f
|
||||
and %1, %1, #0xff
|
||||
orr lr, %1, %1, asl #8
|
||||
cmp %2, #0xf
|
||||
orr lr, lr, lr, asl #16
|
||||
bls 1f
|
||||
mov r3, lr
|
||||
mov r4, lr
|
||||
mov r5, lr
|
||||
0:
|
||||
sub %2, %2, #16
|
||||
stmia %0!, { r3, r4, r5, lr }
|
||||
cmp %2, #0xf
|
||||
bhi 0b
|
||||
1:
|
||||
cmp %2, #0x7
|
||||
bls 1f
|
||||
mov r3, lr
|
||||
0:
|
||||
sub %2, %2, #8
|
||||
stmia %0!, { r3, lr }
|
||||
cmp %2, #0x7
|
||||
bhi 0b
|
||||
1:
|
||||
cmp %2, #0x3
|
||||
bls 2f
|
||||
0:
|
||||
sub %2, %2, #4
|
||||
str lr, [%0], #4
|
||||
cmp %2, #0x3
|
||||
bhi 0b
|
||||
"
|
||||
#endif /* !__OPTIMIZE_SIZE__ */
|
||||
"
|
||||
2:
|
||||
movs r3, %2
|
||||
sub %2, %2, #1
|
||||
beq 1f
|
||||
0:
|
||||
movs r3, %2
|
||||
sub %2, %2, #1
|
||||
strb %1, [%0], #1
|
||||
bne 0b
|
||||
1:"
|
||||
|
||||
: "=&r" (dummy), "=&r" (c), "=&r" (len)
|
||||
: "0" (dst), "1" (c), "2" (len)
|
||||
: "memory", "r3", "r4", "r5", "lr");
|
||||
return dst;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,73 @@
|
|||
#if defined __thumb__
|
||||
|
||||
#include "../../string/strchr.c"
|
||||
|
||||
#else
|
||||
|
||||
#include <string.h>
|
||||
#include "xscale.h"
|
||||
|
||||
char *
|
||||
strchr (const char *s, int c)
|
||||
{
|
||||
unsigned int c2;
|
||||
asm (PRELOADSTR ("%0") : : "r" (s));
|
||||
|
||||
c &= 0xff;
|
||||
|
||||
#ifndef __OPTIMIZE_SIZE__
|
||||
/* Skip unaligned part. */
|
||||
if ((long)s & 3)
|
||||
{
|
||||
s--;
|
||||
do
|
||||
{
|
||||
int c2 = *++s;
|
||||
if (c2 == c)
|
||||
return (char *)s;
|
||||
if (c2 == '\0')
|
||||
return 0;
|
||||
}
|
||||
while (((long)s & 3) != 0);
|
||||
}
|
||||
|
||||
c2 = c + (c << 8);
|
||||
c2 += c2 << 16;
|
||||
|
||||
/* Load two constants:
|
||||
R6 = 0xfefefeff [ == ~(0x80808080 << 1) ]
|
||||
R5 = 0x80808080 */
|
||||
|
||||
asm (PRELOADSTR ("%0") "
|
||||
mov r5, #0x80
|
||||
add r5, r5, #0x8000
|
||||
add r5, r5, r5, lsl #16
|
||||
mvn r6, r5, lsl #1
|
||||
|
||||
sub %0, %0, #4
|
||||
0:
|
||||
ldr r1, [%0, #4]!
|
||||
" PRELOADSTR ("%0") "
|
||||
add r3, r1, r6
|
||||
bic r3, r3, r1
|
||||
ands r2, r3, r5
|
||||
bne 1f
|
||||
eor r2, r1, %1
|
||||
add r3, r2, r6
|
||||
bic r3, r3, r2
|
||||
ands r1, r3, r5
|
||||
beq 0b
|
||||
1:"
|
||||
: "=&r" (s)
|
||||
: "r" (c2), "0" (s)
|
||||
: "r2", "r3", "r5", "r6", "cc");
|
||||
#endif
|
||||
|
||||
while (*s && *s != c)
|
||||
s++;
|
||||
if (*s == c)
|
||||
return (char *)s;
|
||||
return NULL;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,107 @@
|
|||
#if defined __thumb__
|
||||
|
||||
#include "../../string/strcmp.c"
|
||||
|
||||
#else
|
||||
|
||||
#include <string.h>
|
||||
#include "xscale.h"
|
||||
|
||||
int
|
||||
strcmp (const char *s1, const char *s2)
|
||||
{
|
||||
asm (PRELOADSTR ("%0") : : "r" (s1));
|
||||
asm (PRELOADSTR ("%0") : : "r" (s2));
|
||||
|
||||
#ifndef __OPTIMIZE_SIZE__
|
||||
if (((long)s1 & 3) == ((long)s2 & 3))
|
||||
{
|
||||
int result;
|
||||
|
||||
/* Skip unaligned part. */
|
||||
while ((long)s1 & 3)
|
||||
{
|
||||
if (*s1 == '\0' || *s1 != *s2)
|
||||
goto out;
|
||||
s1++;
|
||||
s2++;
|
||||
}
|
||||
|
||||
/* Load two constants:
|
||||
lr = 0xfefefeff [ == ~(0x80808080 << 1) ]
|
||||
ip = 0x80808080 */
|
||||
|
||||
asm (
|
||||
"ldr r2, [%1, #0]
|
||||
ldr r3, [%2, #0]
|
||||
cmp r2, r3
|
||||
bne 2f
|
||||
|
||||
mov ip, #0x80
|
||||
add ip, ip, #0x8000
|
||||
add ip, ip, ip, lsl #16
|
||||
mvn lr, ip, lsl #1
|
||||
|
||||
0:
|
||||
ldr r2, [%1, #0]
|
||||
add r3, r2, lr
|
||||
bic r3, r3, r2
|
||||
tst r3, ip
|
||||
beq 1f
|
||||
mov %0, #0x0
|
||||
b 3f
|
||||
1:
|
||||
ldr r2, [%1, #4]!
|
||||
ldr r3, [%2, #4]!
|
||||
" PRELOADSTR("%1") "
|
||||
" PRELOADSTR("%2") "
|
||||
cmp r2, r3
|
||||
beq 0b"
|
||||
|
||||
/* The following part could be done in a C loop as well, but it needs
|
||||
to be assembler to save some cycles in the case where the optimized
|
||||
loop above finds the strings to be equal. */
|
||||
"
|
||||
2:
|
||||
ldrb r2, [%1, #0]
|
||||
" PRELOADSTR("%1") "
|
||||
" PRELOADSTR("%2") "
|
||||
cmp r2, #0x0
|
||||
beq 1f
|
||||
ldrb r3, [%2, #0]
|
||||
cmp r2, r3
|
||||
bne 1f
|
||||
0:
|
||||
ldrb r3, [%1, #1]!
|
||||
add %2, %2, #1
|
||||
ands ip, r3, #0xff
|
||||
beq 1f
|
||||
ldrb r3, [%2]
|
||||
cmp ip, r3
|
||||
beq 0b
|
||||
1:
|
||||
ldrb lr, [%1, #0]
|
||||
ldrb ip, [%2, #0]
|
||||
rsb %0, ip, lr
|
||||
3:
|
||||
"
|
||||
|
||||
: "=r" (result), "=&r" (s1), "=&r" (s2)
|
||||
: "1" (s1), "2" (s2)
|
||||
: "lr", "ip", "r2", "r3", "cc");
|
||||
return result;
|
||||
}
|
||||
#endif
|
||||
|
||||
while (*s1 != '\0' && *s1 == *s2)
|
||||
{
|
||||
asm (PRELOADSTR("%0") : : "r" (s1));
|
||||
asm (PRELOADSTR("%0") : : "r" (s2));
|
||||
s1++;
|
||||
s2++;
|
||||
}
|
||||
out:
|
||||
return (*(unsigned char *) s1) - (*(unsigned char *) s2);
|
||||
}
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,62 @@
|
|||
#if defined __thumb__
|
||||
|
||||
#include "../../string/strcpy.c"
|
||||
|
||||
#else
|
||||
|
||||
#include <string.h>
|
||||
#include "xscale.h"
|
||||
|
||||
char *
|
||||
strcpy (char *dest, const char *src)
|
||||
{
|
||||
char *dest0 = dest;
|
||||
|
||||
asm (PRELOADSTR ("%0") : : "r" (src));
|
||||
|
||||
#ifndef __OPTIMIZE_SIZE__
|
||||
if (((long)src & 3) == ((long)dest & 3))
|
||||
{
|
||||
/* Skip unaligned part. */
|
||||
while ((long)src & 3)
|
||||
{
|
||||
if (! (*dest++ = *src++))
|
||||
return dest0;
|
||||
}
|
||||
|
||||
/* Load two constants:
|
||||
R4 = 0xfefefeff [ == ~(0x80808080 << 1) ]
|
||||
R5 = 0x80808080 */
|
||||
|
||||
asm ("mov r5, #0x80
|
||||
ldr r1, [%1, #0]
|
||||
add r5, r5, #0x8000
|
||||
add r5, r5, r5, lsl #16
|
||||
mvn r4, r5, lsl #1
|
||||
|
||||
add r3, r1, r5
|
||||
bic r3, r3, r1
|
||||
ands r2, r3, r4
|
||||
bne 1f
|
||||
0:
|
||||
ldr r3, [%1, #0]
|
||||
ldr r1, [%1, #4]!
|
||||
" PRELOADSTR("%1") "
|
||||
str r3, [%0], #4
|
||||
add r2, r1, r4
|
||||
bic r2, r2, r1
|
||||
ands r3, r2, r5
|
||||
beq 0b
|
||||
1:"
|
||||
: "=&r" (dest), "=&r" (src)
|
||||
: "0" (dest), "1" (src)
|
||||
: "r1", "r2", "r3", "r4", "r5", "memory", "cc");
|
||||
}
|
||||
#endif
|
||||
|
||||
while (*dest++ = *src++)
|
||||
asm (PRELOADSTR ("%0") : : "r" (src));
|
||||
return dest0;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,100 @@
|
|||
#if defined __thumb__ || defined(PREFER_SIZE_OVER_SPEED) || defined(__OPTIMIZE_SIZE__)
|
||||
|
||||
#include "../../string/strlen.c"
|
||||
|
||||
#else
|
||||
|
||||
#include <string.h>
|
||||
#include "xscale.h"
|
||||
|
||||
size_t
|
||||
strlen (const char *str)
|
||||
{
|
||||
_CONST char *start = str;
|
||||
|
||||
/* Skip unaligned part. */
|
||||
if ((long)str & 3)
|
||||
{
|
||||
str--;
|
||||
do
|
||||
{
|
||||
if (*++str == '\0')
|
||||
goto out;
|
||||
}
|
||||
while ((long)str & 3);
|
||||
}
|
||||
|
||||
/* Load two constants:
|
||||
R4 = 0xfefefeff [ == ~(0x80808080 << 1) ]
|
||||
R5 = 0x80808080 */
|
||||
|
||||
asm ("mov r5, #0x80
|
||||
add r5, r5, #0x8000
|
||||
add r5, r5, r5, lsl #16
|
||||
mvn r4, r5, lsl #1
|
||||
"
|
||||
|
||||
#if defined __ARM_ARCH_5__ || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5E__ || defined __ARM_ARCH_5TE__
|
||||
|
||||
" tst %0, #0x7
|
||||
ldreqd r6, [%0]
|
||||
beq 1f
|
||||
ldr r2, [%0]
|
||||
add r3, r2, r4
|
||||
bic r3, r3, r2
|
||||
ands r2, r3, r5
|
||||
bne 2f
|
||||
sub %0, %0, #4
|
||||
|
||||
0:
|
||||
ldrd r6, [%0, #8]!
|
||||
"
|
||||
PRELOADSTR ("%0")
|
||||
"
|
||||
1:
|
||||
add r3, r6, r4
|
||||
add r2, r7, r4
|
||||
bic r3, r3, r6
|
||||
bic r2, r2, r7
|
||||
and r3, r3, r5
|
||||
and r2, r2, r5
|
||||
orrs r3, r2, r3
|
||||
beq 0b
|
||||
"
|
||||
#else
|
||||
|
||||
" sub %0, %0, #4
|
||||
|
||||
0:
|
||||
ldr r6, [%0, #4]!
|
||||
"
|
||||
PRELOADSTR ("%0")
|
||||
"
|
||||
add r3, r6, r4
|
||||
bic r3, r3, r6
|
||||
ands r3, r3, r5
|
||||
beq 0b
|
||||
"
|
||||
#endif /* __ARM_ARCH_5[T][E]__ */
|
||||
"
|
||||
2:
|
||||
ldrb r3, [%0]
|
||||
cmp r3, #0x0
|
||||
beq 1f
|
||||
|
||||
0:
|
||||
ldrb r3, [%0, #1]!
|
||||
"
|
||||
PRELOADSTR ("%0")
|
||||
"
|
||||
cmp r3, #0x0
|
||||
bne 0b
|
||||
1:
|
||||
"
|
||||
: "=r" (str) : "0" (str) : "r2", "r3", "r4", "r5", "r6", "r7");
|
||||
|
||||
out:
|
||||
return str - start;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,31 @@
|
|||
#ifndef __XSCALE_MACH_H__
|
||||
#define __XSCALE_MACH_H__
|
||||
|
||||
/* These are predefined by new versions of GNU cpp. */
|
||||
|
||||
#ifndef __USER_LABEL_PREFIX__
|
||||
#define __USER_LABEL_PREFIX__ _
|
||||
#endif
|
||||
|
||||
#ifndef __REGISTER_PREFIX__
|
||||
#define __REGISTER_PREFIX__
|
||||
#endif
|
||||
|
||||
/* ANSI concatenation macros. */
|
||||
|
||||
#define CONCAT1(a, b) CONCAT2(a, b)
|
||||
#define CONCAT2(a, b) a##b
|
||||
|
||||
/* Use the right prefix for global labels. */
|
||||
|
||||
#define SYM(x) CONCAT1(__USER_LABEL_PREFIX__, x)
|
||||
|
||||
#ifdef __XSCALE__
|
||||
#define PRELOAD(X) pld [X]
|
||||
#define PRELOADSTR(X) " pld [" X "]"
|
||||
#else
|
||||
#define PRELOAD(X)
|
||||
#define PRELOADSTR(X) ""
|
||||
#endif /* __XSCALE__ */
|
||||
|
||||
#endif /* !__XSCALE_MACH_H__ */
|
||||
Loading…
Reference in New Issue