From: Gregor Richards <gr@purdue.edu>
To: musl@lists.openwall.com
Cc: Rich Felker <dalias@aerifal.cx>
Subject: Re: mips port working! & remaining issues
Date: Fri, 13 Jul 2012 11:15:56 -0400 [thread overview]
Message-ID: <50003BAC.8070800@purdue.edu> (raw)
In-Reply-To: <20120713052313.GA20369@brightrain.aerifal.cx>
New cross compiler tarballs, particularly for those wishing for soft
float, since that's not workable with the normal tarball:
Hard float:
https://bitbucket.org/GregorR/musl-cross/downloads/crossx86-mips-linux-musl-2012-07-13-649cec5f.tar.xz
Soft float:
https://bitbucket.org/GregorR/musl-cross/downloads/crossx86-mips-sf-linux-musl-2012-07-13-649cec5f.tar.xz
With valediction,
- Gregor Richards
On 07/13/12 01:23, Rich Felker wrote:
> Hi all,
>
> According to libc-testsuite, the new mips port of musl is working. If
> remaining issues exist, I suspect they're in the bits/*.h files'
> definitions of kernel constants and structures, which I could use some
> help reviewing. Threads, including cancellation, are known to work,
> and mipsel (little endian) mode presumably works but is untested.
>
> One major omission that remains is the dynamic linker. Due to mips
> o32's pathologically bad PIC ABI which has no PC-relative addressing,
> the current dynamic linker cannot work as-is. Rather than replacing it
> with an ugly mess of fragile early-stage code that depends on
> non-optimization by the compiler (the way traditional dynamic linkers
> work), I'd rather simply require the dynamic linker and libc to be
> loaded at a fixed address chosen at build time -- this is basically
> what prelink does. We may be able to use the existing prelink tools,
> or just write a small special-purpose tool to prepare libc.so for
> loading at a fixed address.
>
> Another major omission shared with arm is that setjmp/longjmp cannot
> preserve floating point registers. This is because I don't yet know
> how to determine at runtime whether hard-float is available, and the
> registers can't be saved unless they can be determined to exist. Help
> solving this problem would also be appreciated.
>
> Rich
prev parent reply other threads:[~2012-07-13 15:15 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-13 5:23 Rich Felker
2012-07-13 8:15 ` Szabolcs Nagy
2012-07-13 8:18 ` Justin Cormack
2012-07-13 13:08 ` Rich Felker
2012-07-13 13:36 ` Luca Barbato
2012-07-13 14:25 ` Rich Felker
2012-07-13 16:10 ` Szabolcs Nagy
2012-07-13 17:34 ` Rich Felker
2012-07-13 20:40 ` Szabolcs Nagy
2012-07-13 20:58 ` idunham
2012-07-13 22:18 ` Rich Felker
2012-07-13 15:15 ` Gregor Richards [this message]
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