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Subject: Re: Intel P6 vs P7 system call performance
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Ulrich Drepper <drepper@redhat.com>
Cc: Linus Torvalds <torvalds@transmeta.com>,
       Dave Jones <davej@codemonkey.org.uk>, Ingo Molnar <mingo@elte.hu>,
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On Tue, 2002-12-17 at 17:55, Ulrich Drepper wrote:
> But there is a way: if I'm using
> 
>    #define makesyscall(name) \
>         movl $__NR_##name, $eax; \
>         call 0xfffff000-__NR_##name($eax)
> 
> and you'd put at address 0xfffff000 the address of the entry point the
> wrappers wouldn't have any problems finding it.

Is there any reason you can't just keep the linker out of the entire
mess by generating

	.byte whatever
	.dword 0xFFFF0000

instead of call ?


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