[PATCH 16/23] make section names compatible with -ffunction-sections -fdata-sections: ppc - Kernel

This is a discussion on [PATCH 16/23] make section names compatible with -ffunction-sections -fdata-sections: ppc - Kernel ; The purpose of this patch is to make kernel buildable with "gcc -ffunction-sections -fdata-sections". This patch fixes ppc architecture. Signed-off-by: Denys Vlasenko -- vda --- 0.org/arch/ppc/boot/ld.script Wed Jul 2 00:40:41 2008 +++ 1.fixname/arch/ppc/boot/ld.script Wed Jul 2 00:46:50 2008 @@ -41,7 ...

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Thread: [PATCH 16/23] make section names compatible with -ffunction-sections -fdata-sections: ppc

  1. [PATCH 16/23] make section names compatible with -ffunction-sections -fdata-sections: ppc

    The purpose of this patch is to make kernel buildable
    with "gcc -ffunction-sections -fdata-sections".
    This patch fixes ppc architecture.

    Signed-off-by: Denys Vlasenko
    --
    vda


    --- 0.org/arch/ppc/boot/ld.script Wed Jul 2 00:40:41 2008
    +++ 1.fixname/arch/ppc/boot/ld.script Wed Jul 2 00:46:50 2008
    @@ -41,7 +41,7 @@
    {
    *(.data)
    *(.data1)
    - *(.data.boot)
    + *(.boot.data)
    *(.sdata)
    *(.sdata2)
    *(.got.plt) *(.got)
    --- 0.org/arch/ppc/boot/simple/misc-embedded.c Wed Jul 2 00:40:41 2008
    +++ 1.fixname/arch/ppc/boot/simple/misc-embedded.c Wed Jul 2 00:46:50 2008
    @@ -60,7 +60,7 @@

    /* We need to make sure that this is before the images to ensure
    * that it's in a mapped location. - Tom */
    -bd_t hold_resid_buf __attribute__ ((__section__ (".data.boot")));
    +bd_t hold_resid_buf __attribute__ ((__section__ (".boot.data")));
    bd_t *hold_residual = &hold_resid_buf;

    extern unsigned long serial_init(int chan, bd_t *bp);
    --- 0.org/arch/ppc/boot/simple/openbios.c Wed Jul 2 00:40:41 2008
    +++ 1.fixname/arch/ppc/boot/simple/openbios.c Wed Jul 2 00:46:50 2008
    @@ -41,7 +41,7 @@

    /* We need to make sure that this is before the images to ensure
    * that it's in a mapped location. */
    -bd_t hold_resid_buf __attribute__ ((__section__ (".data.boot")));
    +bd_t hold_resid_buf __attribute__ ((__section__ (".boot.data")));
    bd_t *hold_residual = &hold_resid_buf;

    typedef struct openbios_board_info {
    --- 0.org/arch/ppc/boot/simple/pibs.c Wed Jul 2 00:40:41 2008
    +++ 1.fixname/arch/ppc/boot/simple/pibs.c Wed Jul 2 00:46:50 2008
    @@ -16,7 +16,7 @@

    /* We need to make sure that this is before the images to ensure
    * that it's in a mapped location. - Tom */
    -bd_t hold_resid_buf __attribute__ ((__section__ (".data.boot")));
    +bd_t hold_resid_buf __attribute__ ((__section__ (".boot.data")));
    bd_t *hold_residual = &hold_resid_buf;

    /* String functions lifted from lib/vsprintf.c and lib/ctype.c */
    --- 0.org/arch/ppc/kernel/vmlinux.lds.S Wed Jul 2 00:40:41 2008
    +++ 1.fixname/arch/ppc/kernel/vmlinux.lds.S Wed Jul 2 00:46:03 2008
    @@ -78,18 +78,18 @@

    . = ALIGN(4096);
    __nosave_begin = .;
    - .data_nosave : { *(.data.nosave) }
    + .data_nosave : { *(.nosave.data) }
    . = ALIGN(4096);
    __nosave_end = .;

    . = ALIGN(32);
    - .data.cacheline_aligned : { *(.data.cacheline_aligned) }
    + .cacheline_aligned.data : { *(.cacheline_aligned.data) }

    _edata = .;
    PROVIDE (edata = .);

    . = ALIGN(8192);
    - .data.init_task : { *(.data.init_task) }
    + .init_task.data : { *(.init_task.data) }

    NOTES

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  2. Re: [PATCH 16/23] make section names compatible with -ffunction-sections -fdata-sections: ppc

    On Wed, 2 Jul 2008 02:40:03 +0200
    Denys Vlasenko wrote:

    > The purpose of this patch is to make kernel buildable
    > with "gcc -ffunction-sections -fdata-sections".
    > This patch fixes ppc architecture.
    >
    > Signed-off-by: Denys Vlasenko


    You can drop this one entirely. arch/ppc won't exist in 2.6.27. It
    has been removed in the powerpc tree already.

    josh
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