From patchwork Tue Nov 5 18:11:19 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 1189870 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=vivier.eu Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 476ySF3jWRz9sP6 for ; Wed, 6 Nov 2019 05:12:29 +1100 (AEDT) Received: from localhost ([::1]:47128 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iS3Ja-0005xN-Nf for incoming@patchwork.ozlabs.org; Tue, 05 Nov 2019 13:12:26 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:51999) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iS3Ip-0005p4-9r for qemu-devel@nongnu.org; Tue, 05 Nov 2019 13:11:40 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iS3Io-0004fM-6v for qemu-devel@nongnu.org; Tue, 05 Nov 2019 13:11:39 -0500 Received: from mout.kundenserver.de ([212.227.17.10]:44091) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1iS3In-0004eW-To for qemu-devel@nongnu.org; Tue, 05 Nov 2019 13:11:38 -0500 Received: from localhost.localdomain ([78.238.229.36]) by mrelayeu.kundenserver.de (mreue106 [212.227.15.183]) with ESMTPSA (Nemesis) id 1MadC8-1hvSNJ37dK-00cBkp; Tue, 05 Nov 2019 19:11:35 +0100 From: Laurent Vivier To: qemu-devel@nongnu.org Subject: [PULL 13/13] linux-user/alpha: Set r20 secondary return value Date: Tue, 5 Nov 2019 19:11:19 +0100 Message-Id: <20191105181119.26779-14-laurent@vivier.eu> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20191105181119.26779-1-laurent@vivier.eu> References: <20191105181119.26779-1-laurent@vivier.eu> MIME-Version: 1.0 X-Provags-ID: V03:K1:G5Qvq9AUwF43EHf2Ts0+hSE4/ieC4dEfMCGuVPb0+S4cAhx+CkS Bviyb1VDatREu20ezQcBca1qCqm+S4F76Q/14raGATNDrE+++zvwwhb00BNbd0nxN+5X/zw irnXI5HaYSCC6644dJmIRXuCX51+eC6EfPvdKQ4vonEaPTsZvPIz9nZvq4P/c3zs9ykTNdn aA6jVitt8v6p9G+0qrddA== X-UI-Out-Filterresults: notjunk:1; V03:K0:GzKNXf/4V7U=:VYgqIR3/Si08vGcYzOt/oS nPOzcPW3TikWKAZ/GBGmgObmfZzI3O0Y0age/3tcH9AVSX3IUgK1jih+Ym8pGVItS6fusDUjQ QLFinTukIidQ2aMYwX9oXOxqhybI07gg2XO/SPDZHNDrQ1miphRFQRcQK0GHgJ0+6aUaGwG2d aZWOSgZogbWtcNmM4XkgU3X9bDha4T5C77fA3OpfuEP/y9kQR7IXsVvgNq2gvWDgZXqZE8WV9 juU7jCLbopWgLF8nxQF+sIfQb7JIP1oejokRIaeth0an28OZM3F67yqWsddgBChf+NKmnFJLA 8lwEFrN0U7Dz1Ad6dN8gpCrYUQyDkJXt5TCiCUe35X4ThDOvwzCJxwNmZMT1Ii8x/XJ23SPmb MHTBNJesUZwWbpq6TSp7QF6JljPRa/KZVzmP5cRLUDxp0TOV51OnVBFBt+YNdm36GpDLlHah+ 4oPPoHIDb87n1WdA2N1c19SpjpAYVAxGqqOITZvCyYOTw1mJPAzzRU1oH7qxA5usUxTWkI+S1 z9fy96sH8K6B2rKWoh/2/YrOamFeeM3bytn4knGwIyMzkqWXmcA7VbBQ8PQg6Rob2nIZ9n9l8 SuRdxE3aqqLKbzj+Jbe7MGubdUmusi/Jdm7z5mmmvE4l799ABKyry73IP98gt0Ob5H7EuM3sl 4uCYfQIZoAp2VLdt/V9rxk1j/HAzZgqMbQv2mViMoWxE2kdrb02nl0vvduylRFh8qkZTlSk7v s6LPxqaoan5wnPl6xP4xYsdPQQPDFXmDsLmapDPSmev5TlrnYlbbOwEq6va61dLJA3MP4tAJz ddgoQR8lHbGlITYQd0uJddY+/d6iO0xhg5kf7lNdGXr8eKhTD3N+ZLFjlOEATXaR601pqCeEi kPIvH5X7V/KOitiC2ThQ== X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 212.227.17.10 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Cave-Ayland , Riku Voipio , Richard Henderson , Laurent Vivier , =?utf-8?q?Alex_Benn=C3=A9e?= , Artyom Tarasenko Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Richard Henderson This value is not, as far as I know, used by any linux software, but it is set by the kernel and is part of the ABI. Signed-off-by: Richard Henderson Reviewed-by: Laurent Vivier Message-Id: <20191025113921.9412-13-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier --- linux-user/alpha/target_cpu.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/linux-user/alpha/target_cpu.h b/linux-user/alpha/target_cpu.h index dd25e18f47fb..ad408ab5cc8e 100644 --- a/linux-user/alpha/target_cpu.h +++ b/linux-user/alpha/target_cpu.h @@ -27,10 +27,19 @@ static inline void cpu_clone_regs_child(CPUAlphaState *env, target_ulong newsp, } env->ir[IR_V0] = 0; env->ir[IR_A3] = 0; + env->ir[IR_A4] = 1; /* OSF/1 secondary return: child */ } static inline void cpu_clone_regs_parent(CPUAlphaState *env, unsigned flags) { + /* + * OSF/1 secondary return: parent + * Note that the kernel does not do this if SETTLS, because the + * settls argument register is still live after copy_thread. + */ + if (!(flags & CLONE_SETTLS)) { + env->ir[IR_A4] = 0; + } } static inline void cpu_set_tls(CPUAlphaState *env, target_ulong newtls)