mirror of
https://github.com/crosstool-ng/crosstool-ng.git
synced 2024-12-21 05:43:09 +00:00
80 lines
2.7 KiB
Bash
80 lines
2.7 KiB
Bash
# Compute sparc-specific values
|
|
CT_DoArchTupleValues() {
|
|
# That's the only thing to override
|
|
CT_TARGET_ARCH="sparc${target_bits_64}${CT_ARCH_SUFFIX}"
|
|
|
|
# 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.
|
|
if [ "${CT_KERNEL}" = "linux" -a "${CT_ARCH_64}" = "y" -a -z "${CT_ARCH_CPU}" ]; then
|
|
CT_DoLog WARN "Setting CPU to UltraSPARC-I for sparc64-linux. Set CT_ARCH_CPU if a different CPU is desired."
|
|
CT_ARCH_WITH_CPU="--with-cpu=ultrasparc"
|
|
fi
|
|
}
|
|
|
|
#------------------------------------------------------------------------------
|
|
# Get multilib architecture-specific target
|
|
# Usage: CT_DoArchMultilibTarget "target variable" "multilib flags"
|
|
CT_DoArchMultilibTarget ()
|
|
{
|
|
local target_var="${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
|
|
}
|