Re: Sparc status ?
On Fri, Apr 18, 2014 at 6:11 PM, Sébastien Bernard sbern...@nerim.netwrote: Doh, beat me to it by a minute. Yeah, you see what I mean. :) It would be platform suicide to drop 32-bit code generation. Like many RISC architectures, switching to 64-bit is only done for apps that need it, because it is not free and will not, in general, make apps faster. Anyone who has worked on PPC, MIPS, SPARC, etc will be able to confirm this in a heartbeat, and no doubt gcc-sparc maintainers are aware of this as well. Patrick So this does not really help to understand why the switch to gcc-4.8 didn't happened on the sparc architecture. Because GCC maintainers have been saying for years, that they are unwilling to support the weird use case of Debian sparc port, which has 64-bit kernel but 32-bit userspace. I can find discussions about it going back as far as 2009: https://lists.debian.org/debian-sparc/2009/08/msg00010.html Another possibly relevant bit is that Aurelien Jarno started working on an unofficial sparc64 port a while ago, but the current status of it is unknown to me. See, for example https://wiki.debian.org/Sparc64 Cheers. Sébastien -- To UNSUBSCRIBE, email to debian-sparc-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/53515cb3.7030...@nerim.net -- Jurij Smakov | ju...@wooyd.org | Key ID: 43C30A7D
Re: Sparc status ?
Because GCC maintainers have been saying for years, that they are unwilling to support the weird use case of Debian sparc port, which has 64-bit kernel but 32-bit userspace. I can find discussions about it going back as far as 2009: https://lists.debian.org/debian-sparc/2009/08/msg00010.html This is a weak case. I have 64-bit MIPS hardware running debian and it doesn't seem to matter to anyone that the userspace is 32-bit, though the kernel is 64-bit and I can also run 64-bit MIPS binaries on it. GCC is also used on Solaris/SPARC which has a 64-bit kernel and 32-bit userland. I just don't buy the debian sparc is a [uniquely] weird use case. It's not even unique to Debian, and it's not even unique to SPARC. Patrick
Re: Sparc status ?
Because GCC maintainers have been saying for years, that they are unwilling to support the weird use case of Debian sparc port, which has 64-bit kernel but 32-bit userspace. I can find discussions about it going back as far as 2009: Also, a lot of the messages about removing v8 support or upstream dropping sparc32 is confusing. SPARCv8, sometimes called sparc32 (more specifically, 32-bit SPARCv8 ISA that predates the 64-bit ISA, SPARCv9) is used by just *one* CPU that is modern -- Leon. The remaining CPUs are all 64-bit since 1997. However, a 32-bit *ABI* (note ABI, NOT ISA) used on a v9 platform seems like a sane idea, and that is the current case of Debian and Solaris. This is because it's absolutely a terrible idea to remove a 32-bit ABI for v9 CPUs. This ABI is called v8+, which incidentally is a terrible name. I don't care if Debian or other upstream packages drops sparc32 aka v8 support, because the current kernel will only boot on SPARCv9 CPUs, so it doesn't make any sense to add a constraint that binaries must run on v8 CPUs. And I mostly don't care if GCC removes the ability to generate sparc32 aka SPARCv8 code. What I *do* care about it the removal of the ability to build 32-bit binaries on SPARCv9, because 64-bit only binaries is a ridiculous idea. So Jurij, I don't see any reason to believe that upstream support is disappearing. None of the messages are from GCC maintainers directly, and nothing on GCC's website about 4.7 / 4.8 states this to be the case. Patrick
Re: Porting OpenJDK 8
Great, let me try it on mips64el. I met some trouble for openjdk-6 and openjdk-7. Wish openjdk-8 works :-) On Fri, Apr 18, 2014 at 8:02 PM, Emmanuel Bourg ebo...@apache.org wrote: Hi, OpenJDK 8 is being packaged [1] and I'm looking for porters willing to try and compile it on other architectures. So far it builds fine on amd64 and some work has started for kFreeBSD. No other architecture has been tested yet, so any help is welcome. Thank you, Emmanuel Bourg [1] http://anonscm.debian.org/gitweb/?p=pkg-java/openjdk-8.git -- To UNSUBSCRIBE, email to debian-bsd-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/53511469.2090...@apache.org -- Yunqiang Su -- To UNSUBSCRIBE, email to debian-sparc-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/cakcpw6u_kz_emc7bfuhvgczbbf2bzufatpjfd0r9wdtzoxf...@mail.gmail.com
