Date: Tue, 2 Mar 2010 11:37:31 +0530 From: "C. Jayachandran" <c.jayachandran@gmail.com> To: Juli Mallett <jmallett@freebsd.org> Cc: freebsd-mips@freebsd.org Subject: Re: USB support for RMI processors Message-ID: <98a59be81003012207s1f0af94bse9caa468d76ec989@mail.gmail.com> In-Reply-To: <eaa228be1003012057nd382421vf4386953542243dc@mail.gmail.com> References: <98a59be81002230021j6a0cc408j99fe6a5d57a21aff@mail.gmail.com> <98a59be81003010632n526acfd0i57c58bca8645d62@mail.gmail.com> <5B27996C-CAAC-4C87-BF9A-D914B57E175F@lakerest.net> <20100301.163233.4959786962507439.imp@bsdimp.com> <98a59be81003012053w81c3b4cxf25d1157abfe3114@mail.gmail.com> <eaa228be1003012057nd382421vf4386953542243dc@mail.gmail.com>
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On Tue, Mar 2, 2010 at 10:27 AM, Juli Mallett <jmallett@freebsd.org> wrote: > On Mon, Mar 1, 2010 at 20:53, C. Jayachandran <c.jayachandran@gmail.com> wrote: >> The userland compiles with the patches and with -DNO_USB >> -DNO_BLUETOOTH (using ld to convert binary to n32 obj fails - needs to >> look at this). But the main battle will be ahead, the syscall, >> exception and pobably signal handling and executable support needs to >> be fixed before init goes thru. I'm working on this. > > I've made a hackish change to syscall stuff that works well enough but > breaks o32 support; it should be obvious how to fix that: > > http://svn.freebsd.org/viewvc/base/user/jmallett/octeon/sys/mips/mips/trap.c?r1=204399&r2=204534&sortby=date > > I'm fighting with rtld right now and believe I know the source of my > misery but my tree has stopped working for some unrelated reason so > now I'm trying to figure out what I messed up. > > BTW I've found it very useful to work with WITHOUT_DYNAMICROOT while I > worked on the issues more fundamental than the rtld problem. Trivial > signals seemed to work fine. I did the rtld internally for 6.4 almost the same way, i.e, have a static root and get a simple program going, in my case it was on the lines of 'printf("%p\n", printf);'. Another useful thing is to have is a hacked version of printf which does not the libc but does the write syscall in assembly directly, this was useful to print out debug stuff from rtld code. Regards, JC.home | help
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