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# Compute sparc-specific values
CT_DoArchTupleValues() {
# That's the only thing to override
CT_TARGET_ARCH="sparc${target_bits_64}${CT_ARCH_SUFFIX}"
if [ "${CT_KERNEL}" = "linux" -a -z "${CT_ARCH_CPU}" ]; then
if [ "${CT_ARCH_64}" = "y" ]; then
# By default, sparc64-*-linux is configured with -mcpu=v9. However,
# according to https://sourceware.org/ml/libc-alpha/2005-12/msg00027.html,
# "There is no Linux sparc64 port that runs on non-UltraSPARC-I+ ISA CPUs."
# There is a patch that would change the default to -mcpu=ultrasparc for
# sparc64-*-linux configuration: https://patchwork.ozlabs.org/patch/409424/
# but that patch has not been integrated (yet). One concern raised about
# this patch was that -mcpu=ultrasparc can suboptimally schedule instructions
# for newer SPARC CPUs. So, override to -mcpu=ultrasparc and warn the user.
CT_DoLog WARN "Setting CPU to UltraSPARC-I for sparc64-linux. Set CT_ARCH_CPU if a different CPU is desired."
CT_ARCH_WITH_CPU="--with-cpu=ultrasparc"
if [ -n "${CT_ARCH_SUPPORTS_WITH_32_64}" -a -n "${CT_MULTILIB}" ]; then
CT_ARCH_WITH_CPU_32="--with-cpu-32=ultrasparc"
CT_ARCH_WITH_CPU_64="--with-cpu-64=ultrasparc"
fi
else
# Similarly, sparc-*-linux defaults to v7. GLIBC 2.31 started to reject
# pre-v8 configurations with 2.31, and default v8 fails a subsequent test for
# using atomics (which are presumably, only available on some v8 CPUs).
# Therefore, default to v9.
if [ -z "${CT_GLIBC_SPARC_ALLOW_V7}" ]; then
CT_DoLog WARN "Setting CPU to V9 for sparc-linux. Set CT_ARCH_CPU if a different CPU is desired."
CT_ARCH_WITH_CPU="--with-cpu=v9"
fi
fi
fi
}
#------------------------------------------------------------------------------
# Get multilib architecture-specific target
# Usage: CT_DoArchMultilibTarget "target variable" "multilib flags"
CT_DoArchMultilibTarget ()
{
local target_var="${1}"; shift
local -a multi_flags=( "$@" )
local target_
local m32=false
local m64=false
for m in "${multi_flags[@]}"; do
case "$m" in
-m32) m32=true ;;
-m64) m64=true ;;
esac
done
eval target_=\"\${${target_var}}\"
# Fix up bitness
case "${target_}" in
sparc-*) $m64 && target_=${target_/#sparc-/sparc64-} ;;
sparc64-*) $m32 && target_=${target_/#sparc64-/sparc-} ;;
esac
# Set the target variable
eval ${target_var}=\"${target_}\"
}
# Special tuple adjustment for glibc.
CT_DoArchGlibcAdjustTuple() {
local target_var="${1}"
local target_
eval target_=\"\${${target_var}}\"
case "${target_}" in
# SPARC quirk: glibc 2.23 and newer dropped support for SPARCv8 and
# earlier (corresponding pthread barrier code is missing). Until this
# support is reintroduced, configure as sparcv9.
sparc-*)
if [ "${CT_GLIBC_NO_SPARC_V8}" = y ]; then
CT_DoLog WARN "GLIBC 2.23 and newer only support SPARCv9"
target_=${target_/#sparc-/sparcv9-}
fi
;;
esac
# Set the target variable
eval ${target_var}=\"${target_}\"
}
CT_DoArchUClibcConfig() {
local cfg="${1}"
CT_DoArchUClibcSelectArch "${cfg}" "${CT_ARCH}"
# FIXME: select CONFIG_SPARC_V7/V8/V9/V9B according to the CPU selector
}
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