scripts/build/arch/arm.sh
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun Jul 17 22:46:47 2011 +0200 (2011-07-17)
changeset 2892 aa934ec4b4ee
parent 1597 fa8f3ab724f9
child 3158 1161ea79915b
permissions -rw-r--r--
cc/gcc: add the backend/frontend infra for final gcc

Currently, we issue the bare-metal compiler from the pass_1 & pass_2
core compilers, because the final gcc breaks while doing so.

This implies we have to build some libces during the start_files step,
instead of the standard libc step. This is the case for newlib.

By adding a backend/frontend infra to the final gcc, we can abstract
what backend to call: the standard backend for non-bare-metal gcc,
and the core backend for bare-metal.

This patch is just an no-op, it just adds the final backend and
frontend without changing the way bare-metal is built, to come in a
subsequent patch.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
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# Compute ARM-specific values
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CT_DoArchTupleValues() {
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    # The architecture part of the tuple:
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    CT_TARGET_ARCH="${CT_ARCH}${target_endian_eb}"
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    # The system part of the tuple:
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    case "${CT_LIBC},${CT_ARCH_ARM_EABI}" in
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        *glibc,y)   CT_TARGET_SYS=gnueabi;;
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        uClibc,y)   CT_TARGET_SYS=uclibcgnueabi;;
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        *,y)        CT_TARGET_SYS=eabi;;
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    esac
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    # Set the default instruction set mode
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    case "${CT_ARCH_ARM_MODE}" in
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        arm)    ;;
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        thumb)
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            CT_ARCH_CC_CORE_EXTRA_CONFIG="--with-mode=thumb"
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            CT_ARCH_CC_EXTRA_CONFIG="--with-mode=thumb"
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#            CT_ARCH_TARGET_CFLAGS="-mthumb"
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            ;;
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    esac
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    if [ "${CT_ARCH_ARM_INTERWORKING}" = "y" ]; then
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        CT_ARCH_TARGET_CFLAGS+=" -mthumb-interwork"
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    fi
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}