Re: STT_FUNC for assembler checksum and semaphore ops" in git-x86

From: Andi Kleen
Date: Thu Jan 10 2008 - 21:55:32 EST


On Thu, Jan 10, 2008 at 04:59:52PM -0800, John Reiser wrote:
> Andi Kleen wrote:
> > But actually checking the default implementation in linkage.h already
> > implements size: [snip]
>
> > Are you sure it doesn't work? Your patch should be not needed. If it's
> > still wrong then just ENDPROCs() need to be added.
>
> The ENDPROCs() were not used everywhere. Some code used just END() instead,
> while other code used nothing. um/sys-i386/checksum.S didn't #include

END() is fine too since it contains .size too:

#ifndef END
#define END(name) \
.size name, .-name
#endif

> diff --git a/arch/x86/lib/semaphore_32.S b/arch/x86/lib/semaphore_32.S
> index 444fba4..e2c6e0d 100644
> --- a/arch/x86/lib/semaphore_32.S
> +++ b/arch/x86/lib/semaphore_32.S
> @@ -49,7 +49,7 @@ ENTRY(__down_failed)
> ENDFRAME
> ret
> CFI_ENDPROC
> - END(__down_failed)
> + ENDPROC(__down_failed)

I don't think these change makes sense given the definition of END()
shown above.

The only change that would make sense is adding END() (or ENDPROC())
to a function that doesn't have either of them yet.

Since you seem to do nop changes something is wrong with your
testing procedure?

-Andi
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