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Re: [PATCH] PPC64: First in the series of patches implementing POWER8 vector math.
- From: GT <tnggil at protonmail dot com>
- To: "libc-alpha at sourceware dot org" <libc-alpha at sourceware dot org>
- Date: Mon, 18 Feb 2019 19:13:39 +0000
- Subject: Re: [PATCH] PPC64: First in the series of patches implementing POWER8 vector math.
- References: <7z03WSXwPIOYABvW1ZYzHobMOv90wBWKo-e0YptRFovFUpRnrSEGN-zv08kOe_fPJMFnHx1khbcfcfooubTStEAtMX96Q2U4cRVZOm_TZl8=@protonmail.com> <6e6061809e8124e44b8f830bd311ba696c19c8a9.camel@marvell.com> <87tvh1kkvr.fsf@linux.ibm.com>
- Reply-to: GT <tnggil at protonmail dot com>
> > I am also not clear on how we decide on the mangling of the vector
> > function names, particularly the 'b'. I know that x86 uses 'b', 'c',
> > 'd', or 'e' depending on the FP vectors available. Aarch64 is using
> > 'n' in its name mangling (and maybe something else for SVE). Is it OK
> > for Power8 to use the same letter as x86? I don't know if this is
> > covered in some standard or how the letters were chosen.
>
> It was proposed to the X86-64 System V Application Binary Interface, but
> it was refused. [1]
Meaning, Power8 cannot use the 'b'?