• David Gibson's avatar
    [PATCH] powerpc: Consolidate asm compatibility macros · 3ddfbcf1
    David Gibson authored
    This patch consolidates macros used to generate assembly for
    compatibility across different CPUs or configs.  A new header,
    asm-powerpc/asm-compat.h contains the main compatibility macros.  It
    uses some preprocessor magic to make the macros suitable both for use
    in .S files, and in inline asm in .c files.  Headers (bitops.h,
    uaccess.h, atomic.h, bug.h) which had their own such compatibility
    macros are changed to use asm-compat.h.
    
    ppc_asm.h is now for use in .S files *only*, and a #error enforces
    that.  As such, we're a lot more careless about namespace pollution
    here than in asm-compat.h.
    
    While we're at it, this patch adds a call to the PPC405_ERR77 macro in
    futex.h which should have had it already, but didn't.
    
    Built and booted on pSeries, Maple and iSeries (ARCH=powerpc).  Built
    for 32-bit powermac (ARCH=powerpc) and Walnut (ARCH=ppc).
    Signed-off-by: default avatarDavid Gibson <dwg@au1.ibm.com>
    Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
    3ddfbcf1
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