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

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Message-ID: <20080110180225.GA747@one.firstfloor.org>
Date:	Thu, 10 Jan 2008 19:02:25 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	John Reiser <jreiser@...Wagon.com>
Cc:	Sam Ravnborg <sam@...nborg.org>, Andi Kleen <andi@...stfloor.org>,
	mingo@...e.hu, tglx@...utronix.de, linux-kernel@...r.kernel.org
Subject: Re: STT_FUNC for assembler checksum and semaphore ops" in git-x86

> It does look ugly.  But .size and .type are oriented towards static
> description, while the dwarf2 CurrentFrameInfo (CFI) annotations
> are oriented towards dynamic traceback and unwinding.  Forcing the

ENTRY/ENDPROC have nothing to do with dwarf2. That is CFI_STARTPROC/ENDPROC.

But actually checking the default implementation in linkage.h already
implements size:

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

#ifndef ENDPROC
#define ENDPROC(name) \
  .type name, @function; \
  END(name)
#endif

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.

-Andi

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