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From: Richard Henderson (rthREDHAT.COM)
Date: Thu Apr 05 2001 - 14:34:47 CDT

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    On Thu, Apr 05, 2001 at 11:51:03AM -0700, Zack Weinberg wrote:
    > To the best of my knowledge, all ABIs supported by GCC have
    > at least one call-clobbered register which is not used to pass
    > arguments.

    ARM has only 4 call clobbered registers and uses all of them
    in parameter passing. This presents nasty problems for the
    static chain register, for instance.

    r~