Date: Sun, 28 Apr 2019 18:11:23 -0400 From: Tom Pusateri <pusateri@bangj.com> To: Dennis Clarke <dclarke@blastwave.org> Cc: FreeBSD PowerPC ML <freebsd-ppc@freebsd.org> Subject: Re: bugid reports are not a mail list Message-ID: <B63173AA-8FC6-4331-AD1D-041F8433F58F@bangj.com> In-Reply-To: <d1bc0773-193b-75f5-42c8-db42d10f3cd8@blastwave.org> References: <13d3dace-aec1-d238-fdca-a0b8447dd01e@blastwave.org> <15535DAC-7167-4277-A0A0-2F0043BDB945@bangj.com> <d1bc0773-193b-75f5-42c8-db42d10f3cd8@blastwave.org>
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> On Apr 28, 2019, at 5:45 PM, Dennis Clarke <dclarke@blastwave.org> = wrote: >=20 > On 4/28/19 5:38 PM, Tom Pusateri wrote: >>> On Apr 28, 2019, at 5:24 PM, Dennis Clarke <dclarke@blastwave.org> = wrote: >>>=20 >>>=20 >>> Merely wanted to suggest that bugid reports contain more substantive >>> content than open hand waving discussion. I am guilty as charged in >>> this respect also. >>>=20 >>> Also ... follow up to comment left by Tom Pusateri on 235060 : yes >>> the powermacs are cheap and everywhere and not much exists = elsewhere. >>> Unless one wants to spend $10k as a minimum. The situation is worse >>> for RISC-V wherein nearly nothing exists other than QEMU and Spike. >>> So in that hardware architecture one will need to spend $55M or more >>> to get your own 9nm fabrication done. Maybe less. Not much less. >> My apologies. I guess I should take this to the ARM mailing list. >=20 > No this is a good place and input is appreciated. I have arm on hand > here also and it is a bugger to deal with. >=20 > Dennis Agreed. But at least it is improving and isn=E2=80=99t stagnating. I powered up my Mac Pro PowerPC G5 recently because I submitted pull = requests to a project on github and the continuous integration testing = done by the project used QEMU to test the code on big endian linux and = it failed under QEMU but I was sure the code was fine. Trying it on the = same version of linux on real hardware worked fine and so there was QEMU = bug that prevented my pull request from being merged. In addition to linux, I tried my favorite operating system = (12.0-RELEASE) on the G5 and after some trouble installing, my code = worked great there too. Next I tried it on MIPS64 FreeBSD which was very = slow (ERL). I looked around for other options and couldn=E2=80=99t find = much except that both the ARM64 could be programmed in either Big Endian = or Little Endian but there do not seem to be any operating systems using = Big Endian mode. I think it would be useful to have modern inexpensive hardware that can = run in Big Endian mode and if there=E2=80=99s enough others that feel = this way, maybe we could have an ARM64 Big Endian version in addition to = the current Little Endian version. Tom
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