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