Re: PPC64: fpsqrt instruction

To: Christian Zigotzky <chzigotzky@xenosoft.de>
Cc: debian-powerpc@lists.debian.org
Subject: Re: PPC64: fpsqrt instruction
From: Bas Vermeulen <bas@daedalean.ai>
Date: Tue, 6 Feb 2018 18:18:56 +0100
Message-id: <[🔎] CAGtoiRjqZazAr-U=5GAL_p4Y4bB9uJS+iweXtUrLU3qT+6o7Yw@mail.gmail.com>
In-reply-to: <[🔎] 4a4e8d08-8268-6ed4-4f4f-bc77058e4e41@xenosoft.de>
References: <[🔎] CAGtoiRiFOG2B5HL2eywJaJCxC1siPdWsf2Y+8UhQsEdOwKTPxw@mail.gmail.com> <[🔎] 20180206161601.7ok6dkwmqr65bsh6@csclub.uwaterloo.ca> <[🔎] CAGtoiRhYkX=Et+kFz2pbaT8ivh6EW6AvTFnDprHWVD2C4DUwuw@mail.gmail.com> <[🔎] CE9AD648-FD0F-47F8-A78F-367182C08A3D@physik.fu-berlin.de> <[🔎] 4a4e8d08-8268-6ed4-4f4f-bc77058e4e41@xenosoft.de>

Hi Christian,

I am running into a similar problem with my T2080 (using an e6500). I'm currently rebuilding gcc to build for powerpc64 by default, eliminating those from being generated by default. Once that is done, I'll have to rebuild glibc with the new gcc compiler to update libm.

Bas Vermeulen

On Tue, Feb 6, 2018 at 6:04 PM, Christian Zigotzky <chzigotzky@xenosoft.de> wrote:

Hi All,

I use Debian Buster/Sid PPC64 on my Cyrus board with a P5020 SoC [1]. The E5500 fpu doesn't have a fpsqrt instruction. Does Debian's libm have support for emulation of the fpsqrt instruction?

Thanks,
Christian

[1]

https://plus.google.com/u/0/photos/photo/115515624056477014971/6518950042669509138
https://plus.google.com/u/0/photos/photo/115515624056477014971/6518949590349211394

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Follow-Ups:
- Re: PPC64: fpsqrt instruction
  - From: Christian Zigotzky <chzigotzky@xenosoft.de>

References:
- PPC64: gcc currently compiles for power4 by default, causing glibc's sqrtf to fail on e6500
  - From: Bas Vermeulen <bas@daedalean.ai>
- Re: PPC64: gcc currently compiles for power4 by default, causing glibc's sqrtf to fail on e6500
  - From: lsorense@csclub.uwaterloo.ca (Lennart Sorensen)
- Re: PPC64: gcc currently compiles for power4 by default, causing glibc's sqrtf to fail on e6500
  - From: Bas Vermeulen <bas@daedalean.ai>
- Re: PPC64: gcc currently compiles for power4 by default, causing glibc's sqrtf to fail on e6500
  - From: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
- PPC64: fpsqrt instruction
  - From: Christian Zigotzky <chzigotzky@xenosoft.de>

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