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    SubjectRe: [PATCH] fix vsyscall unwind information
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    >>>>> On Mon, 5 May 2003 00:42:48 -0700, Richard Henderson <rth@twiddle.net> said:

    >> If not, could one be added?

    Richard> Why? Certainly it isn't needed for x86.

    Certain applications (such as debuggers) want to know. Sure, you can
    do symbol matching (if you have the symbol table) or code-reading
    (assuming you know the exact sigreturn sequence), but having a marker
    would be more reliable and faster.

    --david
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