Date: Mon, 3 Feb 2020 16:42:52 +0100 From: Romain Naour <romain.naour@...il.com> To: musl@...ts.openwall.com, Rich Felker <dalias@...c.org> Subject: Re: PPC64(LE) support in musl requires ALTIVEC Hi, Le 03/02/2020 à 15:50, Rich Felker a écrit : > On Mon, Feb 03, 2020 at 03:16:17PM +0100, Romain Naour wrote: >> Hi, >> >> We noticed that musl toolchain doesn't work on PPC64 e5500 cpus due to >> Altived instructions in src/setjmp/powerpc64/setjmp.s . >> >> A patch has been sent by Vincent Fazio to the Buildroot mailing list to disable >> musl for such cpus . >> >> Maybe the supported-platforms list could be updated . >> >>  https://git.musl-libc.org/cgit/musl/tree/src/setjmp/powerpc64/setjmp.s#n74 >>  http://patchwork.ozlabs.org/patch/1231986/ >>  https://wiki.musl-libc.org/supported-platforms.html > > Is this like the 32-bit Freescale things with the weird alternate FPU? Indeed, it seems that the only one ppc64 cpu without Altivec support. > We support those for ppc32 as soft-float (and AIUI the ABI for use > with the FPU matches soft-float ABI, so in theory it could be > supported but we were never clear on whether it's IEEE-conforming) but > I wasn't aware of anything like that for 64-bit so it was never added. > Assuming it's the same concept, I don't see a reason we couldn't add > it. I'm not sure it worth the effort, I don't have a particular interest on this cpu. I'm fine if this case is not supported. The issue was discovered by toolchain-builder  project (a Buildroot side project for building cross toolchains) due to issue while testing the system with Qemu. If upcoming version of musl support this cpu, we will re-enable musl for it.  https://toolchains.bootlin.com Best regards, Romain > > Rich >
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