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Re: Trampolines on x86

On Sat, Oct 31, 2009 at 04:26:56PM +0100, Tonnerre Lombard wrote:
> Salut,
> Lars and me encountered a number of problems with iret and trampolines
> on x86. Therefor, we wondered of what use trampolines still are on
> x86 (i386 and amd64) are these days. Considering the fact that we're
> using lazy mapping tricks, wouldn't the trampoline be more of a
> performance drain than the gain it originally intented?

Which trampolines are you bouncing on ??

IIRC gcc uses on-stack tramoplines for fat function pointers.
Are there some others as well???


David Laight:

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