Date: Thu, 31 Jan 2008 09:07:18 -0800 From: Marcel Moolenaar <xcllnt@mac.com> To: "M. Warner Losh" <imp@bsdimp.com> Cc: yanegomi@gmail.com, raj@semihalf.com, marcel@freebsd.org, perforce@freebsd.org, grehan@freebsd.org Subject: Re: PERFORCE change 133911 for review Message-ID: <A98AA645-20F2-449D-80B0-F2123D9CCDA2@mac.com> In-Reply-To: <20080131.082954.1395413111.imp@bsdimp.com> References: <EA167362-268D-4F5E-805F-2CE2B7D0D5BE@mac.com> <47A0BE7A.1030307@semihalf.com> <47A10F52.2090503@freebsd.org> <20080131.082954.1395413111.imp@bsdimp.com>
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On Jan 31, 2008, at 7:29 AM, M. Warner Losh wrote: > In message: <47A10F52.2090503@freebsd.org> > Peter Grehan <grehan@freebsd.org> writes: > : > sparc64 is apparently using this for libc connection (not sure if > : > this is what Peter was referring to in one of the previous > emails?), > : > : See libc/sparc64/sys/__sparc_utrap_setup.c for how the user- > space trap > : handlers are setup. Very nice. And it reminded me that PPC should > really > : migrate to having the signal trampoline be in libc ala sparc64 > rather > : than being copied out to and forcing the stack to be executable. > > mips too :-) Ok, ok... Not ia64. The signal trampoline is in the gateway page and not on the stack. On ia64 the stack is already not executable. :-) -- Marcel Moolenaar xcllnt@mac.com
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