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    SubjectRe: BUG: GCC-4.4.x changes the function frame on some functions
    On 11/19/2009 07:37 AM, Thomas Gleixner wrote:
    > modified function start on a handful of functions only seen with gcc
    > 4.4.x on x86 32 bit:
    > push %edi
    > lea 0x8(%esp),%edi
    > and $0xfffffff0,%esp
    > pushl -0x4(%edi)
    > push %ebp
    > mov %esp,%ebp
    > ...
    > call mcount

    The real questions is why we're aligning the stack in the kernel. It is
    probably not what we want -- we don't use SSE for anything but a handful
    of special cases in the kernel, and we don't want the overhead.


    H. Peter Anvin, Intel Open Source Technology Center
    I work for Intel. I don't speak on their behalf.

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      Last update: 2009-11-19 16:55    [W:0.018 / U:1.704 seconds]
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