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|
# Compute ARM-specific values
CT_DoArchTupleValues() {
# The architecture part of the tuple:
case "${CT_ARCH_BITNESS}" in
32)
CT_TARGET_ARCH="${CT_ARCH}${CT_ARCH_SUFFIX:-${target_endian_eb}}"
;;
64)
# ARM 64 (aka AArch64) is special
[ "${CT_ARCH_BE}" = "y" ] && target_endian_eb="_be"
CT_TARGET_ARCH="aarch64${CT_ARCH_SUFFIX:-${target_endian_eb}}"
;;
esac
# The system part of the tuple:
case "${CT_LIBC},${CT_ARCH_ARM_EABI}" in
glibc,y) CT_TARGET_SYS=gnueabi;;
uClibc-ng,y)CT_TARGET_SYS=uclibc${CT_LIBC_UCLIBC_USE_GNU_SUFFIX:+gnu}eabi;;
musl,y) CT_TARGET_SYS=musleabi;;
*,y) CT_TARGET_SYS=eabi;;
esac
# Set the default instruction set mode
case "${CT_ARCH_ARM_MODE}" in
arm) ;;
thumb)
CT_ARCH_CC_CORE_EXTRA_CONFIG="--with-mode=thumb"
CT_ARCH_CC_EXTRA_CONFIG="--with-mode=thumb"
;;
esac
if [ "${CT_ARCH_ARM_INTERWORKING}" = "y" ]; then
CT_ARCH_TARGET_CFLAGS+=" -mthumb-interwork"
fi
if [ "${CT_ARCH_ARM_TUPLE_USE_EABIHF}" = "y" ]; then
CT_TARGET_SYS="${CT_TARGET_SYS}hf"
fi
# If building multilib, zero out any WITH_*/*_CFLAG - GCC on ARM does not allow
# any of them with multilib.
if [ "${CT_MULTILIB}" = "y" ]; then
CT_ARCH_WITH_ARCH=
CT_ARCH_WITH_ABI=
CT_ARCH_WITH_CPU=
CT_ARCH_WITH_TUNE=
CT_ARCH_WITH_FPU=
CT_ARCH_WITH_FLOAT=
CT_ARCH_ARCH_CFLAG=
CT_ARCH_ABI_CFLAG=
CT_ARCH_CPU_CFLAG=
CT_ARCH_TUNE_CFLAG=
CT_ARCH_FPU_CFLAG=
CT_ARCH_FLOAT_CFLAG=
fi
}
CT_DoArchUClibcConfig() {
local cfg="${1}"
if [ "${CT_ARCH_BITNESS}" = 64 ]; then
CT_DoArchUClibcSelectArch "${cfg}" "aarch64"
else
CT_DoArchUClibcSelectArch "${cfg}" "arm"
case "${CT_ARCH_ARM_MODE}" in
arm)
CT_KconfigDisableOption "COMPILE_IN_THUMB_MODE" "${cfg}"
;;
thumb)
CT_KconfigEnableOption "COMPILE_IN_THUMB_MODE" "${cfg}"
CT_KconfigDisableOption "UCLIBC_HAS_CONTEXT_FUNCS" "${cfg}"
;;
esac
# FIXME: CONFIG_ARM_OABI does not exist in neither uClibc/uClibc-ng
# FIXME: CONFIG_ARM_EABI does not seem to affect anything in either of them, too
# (both check the compiler's built-in define, __ARM_EABI__ instead) except for
# a check for match between toolchain configuration and uClibc-ng in
# uClibc_arch_features.h
if [ "${CT_ARCH_ARM_EABI}" = "y" ]; then
CT_KconfigDisableOption "CONFIG_ARM_OABI" "${cfg}"
CT_KconfigEnableOption "CONFIG_ARM_EABI" "${cfg}"
else
CT_KconfigDisableOption "CONFIG_ARM_EABI" "${cfg}"
CT_KconfigEnableOption "CONFIG_ARM_OABI" "${cfg}"
fi
fi
}
CT_DoArchUClibcCflags() {
local cfg="${1}"
local cflags="${2}"
local f
for f in ${cflags}; do
case "${f}" in
-mthumb)
CT_KconfigEnableOption "COMPILE_IN_THUMB_MODE" "${cfg}"
CT_KconfigDisableOption "UCLIBC_HAS_CONTEXT_FUNCS" "${cfg}"
;;
-marm)
CT_KconfigDisableOption "COMPILE_IN_THUMB_MODE" "${cfg}"
;;
-mlittle-endian)
CT_KconfigDisableOption "ARCH_BIG_ENDIAN" "${cfg}"
CT_KconfigDisableOption "ARCH_WANTS_BIG_ENDIAN" "${cfg}"
CT_KconfigEnableOption "ARCH_LITTLE_ENDIAN" "${cfg}"
CT_KconfigEnableOption "ARCH_WANTS_LITTLE_ENDIAN" "${cfg}"
;;
-mbig-endian)
CT_KconfigEnableOption "ARCH_BIG_ENDIAN" "${cfg}"
CT_KconfigEnableOption "ARCH_WANTS_BIG_ENDIAN" "${cfg}"
CT_KconfigDisableOption "ARCH_LITTLE_ENDIAN" "${cfg}"
CT_KconfigDisableOption "ARCH_WANTS_LITTLE_ENDIAN" "${cfg}"
;;
-mhard-float|-mfloat-abi=hard|-mfloat-abi=softfp)
CT_KconfigEnableOption "UCLIBC_HAS_FPU" "${cfg}"
;;
-msoft-float|-mfloat-abi=soft)
CT_KconfigDisableOption "UCLIBC_HAS_FPU" "${cfg}"
;;
esac
done
}
|
