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List:       gcc
Subject:    Re: Calling convention for "Routines for floating point emulation"
From:       Joseph Myers <joseph () codesourcery ! com>
Date:       2016-09-29 0:07:03
Message-ID: alpine.DEB.2.20.1609290005470.28673 () digraph ! polyomino ! org ! uk
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On Wed, 28 Sep 2016, Yichao Yu wrote:

> >> Except where an external ABI defines things like that, the normal
> >> expectation for libgcc functions is that they have the same ABI as for an
> >> ordinary C function with the same prototype.  That is, since libgcc.texi
> >> gives a prototype for __powidf2 without saying anything special about its
> >> ABI, and since it is not a function defined in RTABI, it can be taken to
> >
> > I guess other ppl on the list probably know this but what's the list
> > of function in RTABI?
> 
> Is it http://infocenter.arm.com/help/topic/com.arm.doc.ihi0043d/IHI0043D_rtabi.pdf
> ?

Yes, that's the right document.  Specifically, section 4.1.2, which 
defines the floating-point functions that always use the base ABI.

-- 
Joseph S. Myers
joseph@codesourcery.com
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