From owner-cvs-src@FreeBSD.ORG Sat Jul 30 11:14:32 2005 Return-Path: X-Original-To: cvs-src@FreeBSD.org Delivered-To: cvs-src@FreeBSD.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 2E4DD16A41F; Sat, 30 Jul 2005 11:14:32 +0000 (GMT) (envelope-from grehan@FreeBSD.org) Received: from repoman.freebsd.org (repoman.freebsd.org [216.136.204.115]) by mx1.FreeBSD.org (Postfix) with ESMTP id C63AF43D45; Sat, 30 Jul 2005 11:14:31 +0000 (GMT) (envelope-from grehan@FreeBSD.org) Received: from repoman.freebsd.org (localhost [127.0.0.1]) by repoman.freebsd.org (8.13.1/8.13.1) with ESMTP id j6UBEVMB057001; Sat, 30 Jul 2005 11:14:31 GMT (envelope-from grehan@repoman.freebsd.org) Received: (from grehan@localhost) by repoman.freebsd.org (8.13.1/8.13.1/Submit) id j6UBEVZB057000; Sat, 30 Jul 2005 11:14:31 GMT (envelope-from grehan) Message-Id: <200507301114.j6UBEVZB057000@repoman.freebsd.org> From: Peter Grehan Date: Sat, 30 Jul 2005 11:14:31 +0000 (UTC) To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org X-FreeBSD-CVS-Branch: HEAD Cc: Subject: cvs commit: src/sys/powerpc/powerpc machdep.c trap.c trap_subr.S X-BeenThere: cvs-src@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: CVS commit messages for the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 30 Jul 2005 11:14:32 -0000 grehan 2005-07-30 11:14:31 UTC FreeBSD src repository Modified files: sys/powerpc/powerpc machdep.c trap.c trap_subr.S Log: Temporary band-aid to fix hang when a process exec's Altivec instructions. trap_subr.S: declare a stub for the a-unavailable trap that does an absolute jump to the vector-assist trap. This is due to the fact that the vec-unavail trap doesn't start at a 256-byte boundary, so the trick of masking the bottom 8 bits of the link register to identify the interrupt doesn't work, so let the vec-assist case handle Altivec-disabled for the time being. Note that this will be fixed in the future with a much smaller vector code-stub (< 16 bytes) that will allow use of strange vector offsets that are also present in 4xx processors, and also allow smaller differences in vector codepaths on the G5. trap.c: Treat altivec-unavailable/assist process traps as SIGILL. Not quite correct, since altivec-assist should really be a panic, but it is fine for the moment due to the above measure. machdep.c Install the stub code for the altivec-unavailable trap, and the standard trap code at the altivec-assist. Reported by: Andreas Tobler MFC after: 3 days Revision Changes Path 1.90 +3 -0 src/sys/powerpc/powerpc/machdep.c 1.55 +5 -0 src/sys/powerpc/powerpc/trap.c 1.15 +8 -0 src/sys/powerpc/powerpc/trap_subr.S