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[ARM] Select appropriate memcpy implementation for ARMv8-a. 

The newlib configury logic that detects architecture version and
chooses an appropriate memcpy implementation does not consider
ARMv8-a.

This patch adds configury logic to detect ARMv8-a along with the
associated changes in Makefile.am and memcpy.
This commit is contained in:
Marcus Shawcroft 2015-11-03 11:02:15 +00:00
parent 0631279394
commit 0a4019eed2
6 changed files with 106 additions and 14 deletions
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9
newlib/ChangeLog
View File

@ -1,3 +1,12 @@
2015-11-03 Marcus Shawcroft <marcus.shawcroft@arm.com>
* libc/machine/arm/configure.in: Check for __ARM_ARCH_8A__.
* libc/machine/arm/memcpy.S: Handle __ARM_ARCH_8A__.
* libc/machine/arm/Makefile.am: Consider HAVE_ARMV8A in memcpy
selection.
* libc/machine/arm/Makefile.in: Regenerate.
* libc/machine/arm/configure: Regenerate.
2015-11-02 Jon Turney <jon.turney@dronecode.org.uk>
* HOWTO: Update.

5
newlib/libc/machine/arm/Makefile.am
View File

@ -33,6 +33,10 @@ if OPT_SIZE
MEMCPY_SRC=
MEMCPY_OBJ=
else
if HAVE_ARMV8A
MEMCPY_SRC=memcpy.S
MEMCPY_OBJ=$(lpfx)memcpy.o
else
if HAVE_ARMV7A
MEMCPY_SRC=memcpy.S
MEMCPY_OBJ=$(lpfx)memcpy.o
@ -45,6 +49,7 @@ MEMCPY_SRC=
MEMCPY_OBJ=
endif !HAVE_ARMV7M
endif !HAVE_ARMV7A
endif !HAVE_ARMV8A
endif !OPT_SIZE
lib_a_SOURCES = setjmp.S access.c strcmp.S strcpy.c \

28
newlib/libc/machine/arm/Makefile.in
View File

@ -71,12 +71,14 @@ lib_a_AR = $(AR) $(ARFLAGS)
@HAVE_THUMB1_FALSE@am__DEPENDENCIES_1 = $(lpfx)strlen.o
@HAVE_THUMB1_TRUE@@OPT_SIZE_TRUE@am__DEPENDENCIES_1 = $(lpfx)strlen.o
@HAVE_ARMV7_TRUE@am__DEPENDENCIES_2 = $(lpfx)memchr.o
@HAVE_ARMV7A_FALSE@@HAVE_ARMV7M_TRUE@@OPT_SIZE_FALSE@am__DEPENDENCIES_3 = $(lpfx)memcpy.o
@HAVE_ARMV7A_TRUE@@OPT_SIZE_FALSE@am__DEPENDENCIES_3 = \
@HAVE_ARMV7A_TRUE@@OPT_SIZE_FALSE@ $(lpfx)memcpy.o
@HAVE_ARMV7A_FALSE@@HAVE_ARMV7M_TRUE@@OPT_SIZE_FALSE@am__objects_1 = lib_a-memcpy.$(OBJEXT)
@HAVE_ARMV7A_TRUE@@OPT_SIZE_FALSE@am__objects_1 = \
@HAVE_ARMV7A_TRUE@@OPT_SIZE_FALSE@ lib_a-memcpy.$(OBJEXT)
@HAVE_ARMV7A_FALSE@@HAVE_ARMV7M_TRUE@@HAVE_ARMV8A_FALSE@@OPT_SIZE_FALSE@am__DEPENDENCIES_3 = $(lpfx)memcpy.o
@HAVE_ARMV7A_TRUE@@HAVE_ARMV8A_FALSE@@OPT_SIZE_FALSE@am__DEPENDENCIES_3 = $(lpfx)memcpy.o
@HAVE_ARMV8A_TRUE@@OPT_SIZE_FALSE@am__DEPENDENCIES_3 = \
@HAVE_ARMV8A_TRUE@@OPT_SIZE_FALSE@ $(lpfx)memcpy.o
@HAVE_ARMV7A_FALSE@@HAVE_ARMV7M_TRUE@@HAVE_ARMV8A_FALSE@@OPT_SIZE_FALSE@am__objects_1 = lib_a-memcpy.$(OBJEXT)
@HAVE_ARMV7A_TRUE@@HAVE_ARMV8A_FALSE@@OPT_SIZE_FALSE@am__objects_1 = lib_a-memcpy.$(OBJEXT)
@HAVE_ARMV8A_TRUE@@OPT_SIZE_FALSE@am__objects_1 = \
@HAVE_ARMV8A_TRUE@@OPT_SIZE_FALSE@ lib_a-memcpy.$(OBJEXT)
@HAVE_ARMV7_TRUE@am__objects_2 = lib_a-memchr.$(OBJEXT)
@HAVE_THUMB1_FALSE@am__objects_3 = lib_a-strlen.$(OBJEXT)
@HAVE_THUMB1_TRUE@@OPT_SIZE_TRUE@am__objects_3 = \
@ -226,13 +228,15 @@ noinst_LIBRARIES = lib.a
@HAVE_ARMV7_TRUE@MEMCHR_SRC = memchr.S
@HAVE_ARMV7_FALSE@MEMCHR_OBJ =
@HAVE_ARMV7_TRUE@MEMCHR_OBJ = $(lpfx)memchr.o
@HAVE_ARMV7A_FALSE@@HAVE_ARMV7M_FALSE@@OPT_SIZE_FALSE@MEMCPY_SRC =
@HAVE_ARMV7A_FALSE@@HAVE_ARMV7M_TRUE@@OPT_SIZE_FALSE@MEMCPY_SRC = memcpy.S
@HAVE_ARMV7A_TRUE@@OPT_SIZE_FALSE@MEMCPY_SRC = memcpy.S
@HAVE_ARMV7A_FALSE@@HAVE_ARMV7M_FALSE@@HAVE_ARMV8A_FALSE@@OPT_SIZE_FALSE@MEMCPY_SRC =
@HAVE_ARMV7A_FALSE@@HAVE_ARMV7M_TRUE@@HAVE_ARMV8A_FALSE@@OPT_SIZE_FALSE@MEMCPY_SRC = memcpy.S
@HAVE_ARMV7A_TRUE@@HAVE_ARMV8A_FALSE@@OPT_SIZE_FALSE@MEMCPY_SRC = memcpy.S
@HAVE_ARMV8A_TRUE@@OPT_SIZE_FALSE@MEMCPY_SRC = memcpy.S
@OPT_SIZE_TRUE@MEMCPY_SRC =
@HAVE_ARMV7A_FALSE@@HAVE_ARMV7M_FALSE@@OPT_SIZE_FALSE@MEMCPY_OBJ =
@HAVE_ARMV7A_FALSE@@HAVE_ARMV7M_TRUE@@OPT_SIZE_FALSE@MEMCPY_OBJ = $(lpfx)memcpy.o
@HAVE_ARMV7A_TRUE@@OPT_SIZE_FALSE@MEMCPY_OBJ = $(lpfx)memcpy.o
@HAVE_ARMV7A_FALSE@@HAVE_ARMV7M_FALSE@@HAVE_ARMV8A_FALSE@@OPT_SIZE_FALSE@MEMCPY_OBJ =
@HAVE_ARMV7A_FALSE@@HAVE_ARMV7M_TRUE@@HAVE_ARMV8A_FALSE@@OPT_SIZE_FALSE@MEMCPY_OBJ = $(lpfx)memcpy.o
@HAVE_ARMV7A_TRUE@@HAVE_ARMV8A_FALSE@@OPT_SIZE_FALSE@MEMCPY_OBJ = $(lpfx)memcpy.o
@HAVE_ARMV8A_TRUE@@OPT_SIZE_FALSE@MEMCPY_OBJ = $(lpfx)memcpy.o
@OPT_SIZE_TRUE@MEMCPY_OBJ =
lib_a_SOURCES = setjmp.S access.c strcmp.S strcpy.c \
$(MEMCPY_SRC) $(MEMCHR_SRC) $(STRLEN_SRC) \

48
newlib/libc/machine/arm/configure vendored
View File

@ -567,6 +567,8 @@ LIBOBJS
CFLAGS
HAVE_ARMV7M_FALSE
HAVE_ARMV7M_TRUE
HAVE_ARMV8A_FALSE
HAVE_ARMV8A_TRUE
HAVE_ARMV7A_FALSE
HAVE_ARMV7A_TRUE
HAVE_ARMV7_FALSE
@ -3589,6 +3591,48 @@ else
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether armv8a processor is supported" >&5
$as_echo_n "checking whether armv8a processor is supported... " >&6; }
if ${acnewlib_cv_armv8a_processor+:} false; then :
$as_echo_n "(cached) " >&6
else
cat > conftest.c <<EOF
#if defined (__ARM_ARCH_8A__) && defined (__ARM_FEATURE_UNALIGNED)
#define HAVE_ARMV8A
#else
#error "ARMV8A is not supported."
#endif
int main () {
return 0;
}
EOF
if { ac_try='${CC} $CFLAGS $CPPFLAGS -c -o conftest.o conftest.c
1>&5'
{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
(eval $ac_try) 2>&5
ac_status=$?
$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
test $ac_status = 0; }; }
then
acnewlib_cv_armv8a_processor=yes;
else
acnewlib_cv_armv8a_processor=no;
fi
rm -f conftest*
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $acnewlib_cv_armv8a_processor" >&5
$as_echo "$acnewlib_cv_armv8a_processor" >&6; }
if test x"$acnewlib_cv_armv8a_processor" = x"yes"; then
HAVE_ARMV8A_TRUE=
HAVE_ARMV8A_FALSE='#'
else
HAVE_ARMV8A_TRUE='#'
HAVE_ARMV8A_FALSE=
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether armv7m processor is supported" >&5
$as_echo_n "checking whether armv7m processor is supported... " >&6; }
if ${acnewlib_cv_armv7m_processor+:} false; then :
@ -3837,6 +3881,10 @@ if test -z "${HAVE_ARMV7A_TRUE}" && test -z "${HAVE_ARMV7A_FALSE}"; then
as_fn_error $? "conditional \"HAVE_ARMV7A\" was never defined.
Usually this means the macro was only invoked conditionally." "$LINENO" 5
fi
if test -z "${HAVE_ARMV8A_TRUE}" && test -z "${HAVE_ARMV8A_FALSE}"; then
as_fn_error $? "conditional \"HAVE_ARMV8A\" was never defined.
Usually this means the macro was only invoked conditionally." "$LINENO" 5
fi
if test -z "${HAVE_ARMV7M_TRUE}" && test -z "${HAVE_ARMV7M_FALSE}"; then
as_fn_error $? "conditional \"HAVE_ARMV7M\" was never defined.
Usually this means the macro was only invoked conditionally." "$LINENO" 5

25
newlib/libc/machine/arm/configure.in
View File

@ -111,6 +111,31 @@ rm -f conftest*])
AM_CONDITIONAL(HAVE_ARMV7A, test x"$acnewlib_cv_armv7a_processor" = x"yes")
dnl Check for whether ARM_ARCH_8A is defined.
AC_CACHE_CHECK(whether armv8a processor is supported,
acnewlib_cv_armv8a_processor, [dnl
cat > conftest.c <<EOF
#if defined (__ARM_ARCH_8A__) && defined (__ARM_FEATURE_UNALIGNED)
#define HAVE_ARMV8A
#else
#error "ARMV8A is not supported."
#endif
int main () {
return 0;
}
EOF
if AC_TRY_COMMAND([${CC} $CFLAGS $CPPFLAGS -c -o conftest.o conftest.c
1>&AS_MESSAGE_LOG_FD])
then
acnewlib_cv_armv8a_processor=yes;
else
acnewlib_cv_armv8a_processor=no;
fi
rm -f conftest*])
AM_CONDITIONAL(HAVE_ARMV8A, test x"$acnewlib_cv_armv8a_processor" = x"yes")
dnl Check for whether ARM_ARCH_7M is defined.
AC_CACHE_CHECK(whether armv7m processor is supported,
acnewlib_cv_armv7m_processor, [dnl

5
newlib/libc/machine/arm/memcpy.S
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2013 ARM Ltd
* Copyright (c) 2013-2015 ARM Ltd
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@ -40,7 +40,8 @@
lib_a-memcpy.o to be generated.
*/
#elif defined (__ARM_ARCH_7A__) && defined (__ARM_FEATURE_UNALIGNED)
#elif (__ARM_ARCH >= 7 && __ARM_ARCH_PROFILE == 'A' \
&& defined (__ARM_FEATURE_UNALIGNED))
#include "memcpy-armv7a.S"
#elif defined (__ARM_ARCH_7M__) || defined (__ARM_ARCH_7EM__)