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List:       gcc
Subject:    Re: Calling convention for "Routines for floating point emulation"
From:       Yichao Yu <yyc1992 () gmail ! com>
Date:       2016-09-29 0:08:43
Message-ID: CAMvDr+T=A=egWO2CZ7ej65YZJs3UYq77185x2u2_roK2XWb=KA () mail ! gmail ! com
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On Wed, Sep 28, 2016 at 8:07 PM, Joseph Myers <joseph@codesourcery.com> wrote:
> 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.

I've just started reading 4.1.1 =)

Got it. Thanks very much for the fast answer!

Yichao Yu

>
> --
> Joseph S. Myers
> joseph@codesourcery.com
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