Date: Mon, 19 Nov 2001 12:16:39 -0800 From: Peter Wemm <peter@wemm.org> To: Doug Rabson <dfr@nlsystems.com> Cc: ia64@FreeBSD.ORG Subject: Re: Things to do Message-ID: <20011119201639.589F738FF@overcee.netplex.com.au> In-Reply-To: <20011030193703.X549-100000@salmon.nlsystems.com>
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Doug Rabson wrote: > An updated random list of things which need doing: > DDB 'n' command > Remote GDB support > link_elf backend I'll take a shot at this unless somebody else wants to do it. We can't have those sparc64 guys having kld's before us and going unchallenged. :-) > FPSWA support Should be done. There is test code at: http://people.freebsd.org/~peter/fpswa/ There are four examples from the manual: "Itanium Processor Floating point Software Assistance and Floating Point Exception Handling" manual. The code is out of sync with reality though, the manual says two of the examples should cause a FP trap/fault, but in fact three of them do. (I cant change the fact that the hardware causes a trap on their code when the docs say the hardware doesn't. :-). > Workaround ar.itc errata > Figure out why loader.rc hangs the loader Almost certainly a trap/fault (divide by zero or something). I'll look for this soon if nobody else spots it. > Use AllocatePages in copy.c to make sure we don't step on EFI > Resize VHPT based on physical memory > ia32 emulation This one will be really interesting.. I was going to have a shot at it but then I remembered the 4K page issue. In theory we could probably just let getpagesize() return an 8K or 16K page size, but we have to do nasty things to executables, ie: make up to the last 4k (for 8k pages) or up to 12K (for 16k pages) of text segments writeable.. And possibly tweak ld-elf.so.1 to expect trouble mmapping two different things to the same logical page. > Write pipelined bcopy/memcpy I thought I saw some sample code from intel somewhere... > Make sure that busdma works on >4GB machines > Make all drivers use busdma Bill Paul did the framework for this in two ethernet drivers. That should be not too hard to replicate elsewhere since he broke the ground. It should then be "simple" (haha) to do the bouncing etc. > ISA dma > New toolchain (almost done) > Rewrite db_trace.c to use unwind records > Ptrace support + port GDB. > SMP (getting closer) > EPC-based syscalls instead of break syscalls Linux still uses break, right? Cheers, -Peter -- Peter Wemm - peter@FreeBSD.org; peter@yahoo-inc.com; peter@netplex.com.au "All of this is for nothing if we don't go to the stars" - JMS/B5 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-ia64" in the body of the message
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