scripts/build/arch/powerpc.sh
author Michael Hope <michael.hope@linaro.org>
Wed Oct 19 15:27:32 2011 +1300 (2011-10-19)
changeset 2739 f320e22f2cba
parent 2675 7c288c777455
child 3169 9d0b37f08a10
permissions -rw-r--r--
arch: add softfp support

Some architectures support a mixed hard/soft floating point, where
the compiler emits hardware floating point instructions, but passes
the operands in core (aka integer) registers.

For example, ARM supports this mode (to come in the next changeset).

Add support for softfp cross compilers to the GCC and GLIBC
configuration. Needed for Ubuntu and other distros that are softfp.

Signed-off-by: Michael Hope <michael.hope@linaro.org>
[yann.morin.1998@anciens.enib.fr: split the original patch]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
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# Compute powerpc-specific values
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CT_DoArchTupleValues () {
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    # The architecture part of the tuple, override only for 64-bit
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    if [ "${CT_ARCH_64}" = "y" ]; then
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        CT_TARGET_ARCH="powerpc64"
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    fi
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    # Only override values when ABI is not the default
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    case "${CT_ARCH_powerpc_ABI}" in
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        eabi)
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            # EABI is only for bare-metal, so libc ∈ [none,newlib]
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            CT_TARGET_SYS="eabi"
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            ;;
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        spe)
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            case "${CT_LIBC}" in
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                none|newlib)    CT_TARGET_SYS="spe";;
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                *glibc)         CT_TARGET_SYS="gnuspe";;
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                uClibc)         CT_TARGET_SYS="uclibcgnuspe";;
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            esac
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            ;;
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    esac
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    # Add extra flags for SPE if needed
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    if [ "${CT_ARCH_powerpc_ABI_SPE}" = "y" ]; then
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        CT_ARCH_TARGET_CFLAGS="-mabi=spe -mspe"
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        CT_ARCH_CC_CORE_EXTRA_CONFIG="--enable-e500_double"
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        CT_ARCH_CC_EXTRA_CONFIG="--enable-e500_double"
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    fi
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}