Date: Wed, 24 Jun 2015 16:08:24 -0400 From: Rich Felker <dalias@...c.org> To: Joseph Myers <joseph@...esourcery.com> Cc: Rob Landley <rob@...dley.net>, musl@...ts.openwall.com, libc-alpha@...rceware.org, linux-sh@...r.kernel.org Subject: Re: SH sigcontext ABI is broken On Wed, Jun 24, 2015 at 07:37:45PM +0000, Joseph Myers wrote: > On Wed, 24 Jun 2015, Rich Felker wrote: > > > On Wed, Jun 24, 2015 at 02:10:06PM +0000, Joseph Myers wrote: > > > On Wed, 24 Jun 2015, Rich Felker wrote: > > > > > > > Nominally SH3 support remains in both the kernel and glibc. If it can > > > > be established that multiple parties agree that there's really no one > > > > left who cares about the old no-FPU sigcontext ABI on SH3, I will be > > > > all for dropping it and unifying sigcontext. > > > > > > Note that right now we have BE and LE versions of *three* ABIs for SH in > > > glibc (SH3 soft-float, SH4 soft-float, SH4 hard-float) (and as noted in > > > this discussion, right now each would only work properly on a kernel with > > > the corresponding configuration). See > > > <https://sourceware.org/glibc/wiki/ABIList>. > > > > Is your understanding that SH4 soft-float is using the SH4 ucontext_t > > layout? I don't think it's even working at all. Glibc uses the layout > > My understanding is what Kaz affirmed in > <https://sourceware.org/ml/libc-alpha/2014-01/msg00388.html>. It's > entirely possible there are bugs (including regressions) in this area; if > so, they should be filed in Bugzilla. OK, if that's the intent, I don't think it matches the present reality. If I can confirm this I'll file a bug. Rich
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