From owner-svn-src-head@freebsd.org Sat Sep 28 03:33:07 2019 Return-Path: Delivered-To: svn-src-head@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id D4A50FA057; Sat, 28 Sep 2019 03:33:07 +0000 (UTC) (envelope-from jhibbits@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 46gDl75JvRz3G6g; Sat, 28 Sep 2019 03:33:07 +0000 (UTC) (envelope-from jhibbits@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 702BF235A0; Sat, 28 Sep 2019 03:33:07 +0000 (UTC) (envelope-from jhibbits@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x8S3X7e1048247; Sat, 28 Sep 2019 03:33:07 GMT (envelope-from jhibbits@FreeBSD.org) Received: (from jhibbits@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x8S3X7BN048246; Sat, 28 Sep 2019 03:33:07 GMT (envelope-from jhibbits@FreeBSD.org) Message-Id: <201909280333.x8S3X7BN048246@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: jhibbits set sender to jhibbits@FreeBSD.org using -f From: Justin Hibbits Date: Sat, 28 Sep 2019 03:33:07 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r352832 - head/sys/powerpc/booke X-SVN-Group: head X-SVN-Commit-Author: jhibbits X-SVN-Commit-Paths: head/sys/powerpc/booke X-SVN-Commit-Revision: 352832 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 28 Sep 2019 03:33:07 -0000 Author: jhibbits Date: Sat Sep 28 03:33:07 2019 New Revision: 352832 URL: https://svnweb.freebsd.org/changeset/base/352832 Log: powerpc/booke64: Align initial stack setting to match that of aim64's Clang9/LLD9 appears to get quite confused with the instruction stream used to obtain the tmpstack pointer, almost as though it thinks this is a C function, so tries to optimize it. Since the AIM64 method doesn't use the TOC to obtain the tmpstack, just follow that model, and lld won't get confused. Reported by: bdragon MFC after: 2 weeks Modified: head/sys/powerpc/booke/locore.S Modified: head/sys/powerpc/booke/locore.S ============================================================================== --- head/sys/powerpc/booke/locore.S Sat Sep 28 02:49:46 2019 (r352831) +++ head/sys/powerpc/booke/locore.S Sat Sep 28 03:33:07 2019 (r352832) @@ -298,16 +298,18 @@ done_mapping: ld %r1,0(%r2) add %r2,%r1,%r2 mtspr SPR_SPRG8, %r2 + nop /* Get load offset */ ld %r31,-0x8000(%r2) /* First TOC entry is TOC base */ subf %r31,%r31,%r2 /* Subtract from real TOC base to get base */ /* Set up the stack pointer */ - addis %r1,%r2,TOC_REF(tmpstack)@ha - ld %r1,TOC_REF(tmpstack)@l(%r1) - addi %r1,%r1,TMPSTACKSZ-96 - add %r1,%r1,%r31 + bl 1f + .llong tmpstack + TMPSTACKSZ - 96 - . +1: mflr %r3 + ld %r1,0(%r3) + add %r1,%r1,%r3 bl 1f .llong _DYNAMIC-. 1: mflr %r3