Date: Tue, 30 Apr 2002 12:57:57 -0700 From: Marcel Moolenaar <marcel@cup.hp.com> To: Doug Rabson <dfr@nlsystems.com> Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/ia64/ia64 exception.s src/sys/ia64/include frame.h Message-ID: <20020430195757.GA70203@gauss.cup.hp.com> In-Reply-To: <20020430165257.M25863-100000@herring.nlsystems.com> References: <200204300637.g3U6bQc25956@freefall.freebsd.org> <20020430165257.M25863-100000@herring.nlsystems.com>
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On Tue, Apr 30, 2002 at 04:53:59PM +0100, Doug Rabson wrote: > On Mon, 29 Apr 2002, Marcel Moolenaar wrote: > > > marcel 2002/04/29 23:37:25 PDT > > > > Modified files: > > sys/ia64/ia64 exception.s > > sys/ia64/include frame.h > > Log: > > Add ar.lc and ar.ec to the trapframe. These are not saved for syscalls, > > only for exceptions. > > I was kind-of relying on the C calling conventions saving/restoring these > as needed. ar.lc is callee saved. We have to do it even for the syscall case. ar.ec is automatic as part of the call/return mechanism. We need to explicitly save it only if it's possible to have syscalls inlined. I think we should save them both for syscalls as well. Thoughts? -- Marcel Moolenaar USPA: A-39004 marcel@xcllnt.net To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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