From patchwork Sat Mar 11 03:42:32 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Henderson X-Patchwork-Id: 737637 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3vg95S1LkZz9s7g for ; Sat, 11 Mar 2017 14:45:48 +1100 (AEDT) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="KYoynzhJ"; dkim-atps=neutral Received: from localhost ([::1]:41802 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cmXyT-0003KV-OI for incoming@patchwork.ozlabs.org; Fri, 10 Mar 2017 22:45:45 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:60492) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cmXvm-0001e1-0C for qemu-devel@nongnu.org; Fri, 10 Mar 2017 22:43:01 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cmXvl-0004BZ-6k for qemu-devel@nongnu.org; Fri, 10 Mar 2017 22:42:58 -0500 Received: from mail-qk0-x241.google.com ([2607:f8b0:400d:c09::241]:36250) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1cmXvl-0004BM-2U for qemu-devel@nongnu.org; Fri, 10 Mar 2017 22:42:57 -0500 Received: by mail-qk0-x241.google.com with SMTP id n141so31281258qke.3 for ; Fri, 10 Mar 2017 19:42:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references; bh=dyzpGMCyUdy511MeNV3k9uYxGGfdfSG6cGNnhihbpnk=; b=KYoynzhJQwnFwqTWsf9rS+153r3PgK+mrNLYR1Bdl2F0nbyozR2s37gFJeC0q1D+7s kWd8C0O0LIUh3eRxepN4KuKwFgo3024zINaO4T/jIk6581hra8RuKexvGRGRtAKWQZGI AIfjk3dYNBcBYSH4gQ9bag4qhvjSUBIlWRNmmC0xOFWIDQvc0Y8CgOX/pwGFHVA2W+fF 0rjv7mR1VtOIJjTotZY56w/HDe8PZeGO32s9W+uA4wsVTqSsQLNl5UFBFBFInACphbSk ZAo5ZD1gfyOuf/sFcIdsT9jeeMRZXKCwR0GHMnJBCE4BR3Q8Iv96rDUWOdWW1ydrxE/I ulkw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references; bh=dyzpGMCyUdy511MeNV3k9uYxGGfdfSG6cGNnhihbpnk=; b=mWMRN9lTK+4JTmKBvsiRXPe4iBxhE+A28JMZJMz4lAxl5QKOjf3ARbXL5eFE4IGchF u7YgW2jPZgwcz/WLhijUCVYM5JWuY02LMbC4GesJ1PKh6jzI/ZNP8de2C2g/rSTEjgyN FPc9KmE8G4hanrDuo4k8d+FVek5XsjLnO5p25zxfG/IOFPG/K1XeRxEhfDOkh7FZvWQO PQjACmW+SA9/zrcVWND3J8VMYrwE9kWdT2ajS7SOVVOIQ/AcbSPr0W/wDKm97Q+WoZVM vXHs6quj45yK9X2RQ1F6/Yhlw7I9vWm8zJcUqtHS0JWNuQElw0kzRFBjQ6Uurzr///uV XC7w== X-Gm-Message-State: AFeK/H2MK9mVFtvMxOMi2tystW3gLCtRT/7aewAMZXoGnn5pJCeiJNN0Pq9H3Ljv/c/nQA== X-Received: by 10.55.37.142 with SMTP id l14mr21091111qkl.188.1489203776590; Fri, 10 Mar 2017 19:42:56 -0800 (PST) Received: from bigtime.twiddle.net.com ([101.165.234.197]) by smtp.gmail.com with ESMTPSA id l6sm7670101qkd.66.2017.03.10.19.42.53 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 10 Mar 2017 19:42:56 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Date: Sat, 11 Mar 2017 13:42:32 +1000 Message-Id: <20170311034232.14213-4-rth@twiddle.net> X-Mailer: git-send-email 2.9.3 In-Reply-To: <20170311034232.14213-1-rth@twiddle.net> References: <20170311034232.14213-1-rth@twiddle.net> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:400d:c09::241 Subject: [Qemu-devel] [PATCH 3/3] target/hppa: Fix cpu_clone_regs X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, deller@gmx.de, riku.voipio@iki.fi Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" By failing to return from the syscall in the child, the child issues another clone syscall and hilarity ensues. Signed-off-by: Richard Henderson --- linux-user/hppa/target_cpu.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/linux-user/hppa/target_cpu.h b/linux-user/hppa/target_cpu.h index 1a5ceca..e50522e 100644 --- a/linux-user/hppa/target_cpu.h +++ b/linux-user/hppa/target_cpu.h @@ -24,7 +24,11 @@ static inline void cpu_clone_regs(CPUHPPAState *env, target_ulong newsp) if (newsp) { env->gr[30] = newsp; } + /* Indicate child in return value. */ env->gr[28] = 0; + /* Return from the syscall. */ + env->iaoq_f = env->gr[31]; + env->iaoq_b = env->gr[31] + 4; } static inline void cpu_set_tls(CPUHPPAState *env, target_ulong newtls)