Re: Intel P6 vs P7 system call performance

[Richard B. Johnson]

On Tue, 17 Dec 2002, Richard B. Johnson wrote:

> On Tue, 17 Dec 2002, Manfred Spraul wrote:
> 
> > >
> > >
> > >   pushl %ebp
> > >   movl $0xfffff000, %ebp
> > >   call *%ebp
> > >   popl %ebp
> > >  
> > >
> > 
> > You could avoid clobbering a register with something like
> > 
> > pushl $0xfffff000
> > call *(%esp)
> > addl %esp,4
> > 
> 
> This is a near 'call'.
> 
> 	pushl $0xfffff000
> 	ret
> 

I hate answering my own stuff......... This gets back and modifies
no registers.

Actually I should be:

	pushl	$next_address	# Where to go when the call returns
	pushl	$0xfffff000	# Put this on the stack
	ret			# 'Return' to it (jump)
next_address:			# Were we end up after

Cheers,
Dick Johnson
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