From owner-svn-src-all@freebsd.org Sun Jan 13 04:51:25 2019 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 41F101488EDA; Sun, 13 Jan 2019 04:51:25 +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 D83D38ADF5; Sun, 13 Jan 2019 04:51:24 +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 C6D78E6BE; Sun, 13 Jan 2019 04:51:24 +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 x0D4pOR3020437; Sun, 13 Jan 2019 04:51:24 GMT (envelope-from jhibbits@FreeBSD.org) Received: (from jhibbits@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x0D4pOfS020436; Sun, 13 Jan 2019 04:51:24 GMT (envelope-from jhibbits@FreeBSD.org) Message-Id: <201901130451.x0D4pOfS020436@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: jhibbits set sender to jhibbits@FreeBSD.org using -f From: Justin Hibbits Date: Sun, 13 Jan 2019 04:51:24 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r342988 - 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: 342988 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: D83D38ADF5 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.98 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; NEURAL_HAM_SHORT(-0.99)[-0.986,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US]; NEURAL_HAM_LONG(-1.00)[-0.999,0] X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 13 Jan 2019 04:51:25 -0000 Author: jhibbits Date: Sun Jan 13 04:51:24 2019 New Revision: 342988 URL: https://svnweb.freebsd.org/changeset/base/342988 Log: powerpcspe: Correct SPE high-component loading Don't clobber the low part of the register restoring the high component of. This could lead to very bad behavior if it's an ABI-affected register. While here, also mark the asm volatile in the SPE high save case, to match the load case. Reported by: Branden Bergren (git_bdragon.rtk0.net) MFC after: 1 week Modified: head/sys/powerpc/booke/spe.c Modified: head/sys/powerpc/booke/spe.c ============================================================================== --- head/sys/powerpc/booke/spe.c Sun Jan 13 02:38:14 2019 (r342987) +++ head/sys/powerpc/booke/spe.c Sun Jan 13 04:51:24 2019 (r342988) @@ -425,7 +425,7 @@ static uint32_t spe_save_reg_high(int reg) { uint32_t vec[2]; -#define EVSTDW(n) case n: __asm ("evstdw %1,0(%0)" \ +#define EVSTDW(n) case n: __asm __volatile ("evstdw %1,0(%0)" \ :: "b"(vec), "n"(n)); break; switch (reg) { EVSTDW(0); EVSTDW(1); EVSTDW(2); EVSTDW(3); @@ -448,7 +448,7 @@ spe_save_reg_high(int reg) static void spe_load_reg_high(int reg, uint32_t val) { -#define EVLDW(n) case n: __asm __volatile("evmergelo "#n",%0,0," \ +#define EVLDW(n) case n: __asm __volatile("evmergelo "#n",%0,"#n \ :: "r"(val)); break; switch (reg) { EVLDW(1); EVLDW(2); EVLDW(3); EVLDW(4);