From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C2BFBC433EF for ; Wed, 29 Sep 2021 13:21:08 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 6E4406128E for ; Wed, 29 Sep 2021 13:21:08 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 6E4406128E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:36652 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mVZWF-00045j-Ka for qemu-devel@archiver.kernel.org; Wed, 29 Sep 2021 09:21:07 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:39340) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mVZI6-00071o-0r for qemu-devel@nongnu.org; Wed, 29 Sep 2021 09:06:30 -0400 Received: from mail-ot1-x32f.google.com ([2607:f8b0:4864:20::32f]:43639) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mVZI4-0006G2-Ae for qemu-devel@nongnu.org; Wed, 29 Sep 2021 09:06:29 -0400 Received: by mail-ot1-x32f.google.com with SMTP id x33-20020a9d37a4000000b0054733a85462so2733454otb.10 for ; Wed, 29 Sep 2021 06:06:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=OeHNvhPeuZfmulgUe9ozzImEdGk/YkGYzR1u2KyMGGs=; b=tzfUPuFwDIZC0sVrkWiKzmHYuihHmgcxLqmwPO47eI1S3wIuU/Nl/TiVQxlYIRxjA6 YGTlZ+qYXatq4nCdERPHrzhmPxK+ayunz887oXnMOKzUSfRy68jxg2OMqkXWCJf9Dcfo 78JozUtLxzpq6qJdxjuPEFeDPLWaAJu8jTHlQWPYHb6HNnwm9rdMb1lvMz+qbX0VvO3E /SCvrLcVZFlTzWKbZDoj/QwEvj4jc98L2v68pDRSO2tc1nnV6GniHKjFRlWdSLMVbQBi i+IRduT5I8hWe0FmnxoSm0xsxOiine6lHA0eRTwuBfO7IAjMJQ7pQ5ihvD5m1jkue+qE C8YA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=OeHNvhPeuZfmulgUe9ozzImEdGk/YkGYzR1u2KyMGGs=; b=oKx0XIDNVWvosj9a41m+Hgb8deEPUtLTBjUJcHKU6g7ifTK1pHN9FkjysWOzGIlOfF PFxOcfnv6cu+0XPW4iKPxEIKUXcoLTyZbhBFaFfWngvZZjdpAuiUfP+ITBS1C+nMAzxk hj190RNts5NGH+5F579AIkhdJPp76eoGOiZCmEeOaDDCiyA9QtRvxIsf6ubvw2UJXmly GycR5KIbeYfDB8ncmEK8vIjL+kB9SyB24A70hawmDZVfKCXMAQcjOhklsf5DBZYpNfgY smdV3ANwWfPpsAzNsBvKh6hl9wIOrFYIlnr9DRYrvQZ3RjxpIA7B61S0PeGJRwyvPdyU GGOg== X-Gm-Message-State: AOAM5335C8GwUHfTS6Iz7nc24pQLTiQVFf73FB++EDFuwXkQYXBWWc4z 1XA1WeXFv/s79jzVgbR1Hzm0LPXgpvKprw== X-Google-Smtp-Source: ABdhPJyJW+2srd5sookvSB3O24eVSu1o7S7uIiNDr1iGB4Zd1+H7JWGr6MtmkEgfTZm+4VLoGAg5zw== X-Received: by 2002:a05:6830:4095:: with SMTP id x21mr4655146ott.352.1632920786837; Wed, 29 Sep 2021 06:06:26 -0700 (PDT) Received: from localhost.localdomain ([172.58.171.248]) by smtp.gmail.com with ESMTPSA id w1sm442823ote.41.2021.09.29.06.06.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Sep 2021 06:06:26 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v5 13/26] linux-user/microblaze: Implement setup_sigtramp Date: Wed, 29 Sep 2021 09:05:40 -0400 Message-Id: <20210929130553.121567-14-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210929130553.121567-1-richard.henderson@linaro.org> References: <20210929130553.121567-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::32f; envelope-from=richard.henderson@linaro.org; helo=mail-ot1-x32f.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action 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: "Edgar E . Iglesias" , alex.bennee@linaro.org, laurent@vivier.eu, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Create and record the rt signal trampoline. Cc: Edgar E. Iglesias Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Richard Henderson --- linux-user/microblaze/target_signal.h | 2 ++ linux-user/microblaze/signal.c | 24 +++++++++++++++++------- 2 files changed, 19 insertions(+), 7 deletions(-) diff --git a/linux-user/microblaze/target_signal.h b/linux-user/microblaze/target_signal.h index 1c326296de..e8b510f6b1 100644 --- a/linux-user/microblaze/target_signal.h +++ b/linux-user/microblaze/target_signal.h @@ -21,4 +21,6 @@ typedef struct target_sigaltstack { #include "../generic/signal.h" +#define TARGET_ARCH_HAS_SIGTRAMP_PAGE 1 + #endif /* MICROBLAZE_TARGET_SIGNAL_H */ diff --git a/linux-user/microblaze/signal.c b/linux-user/microblaze/signal.c index b822679d18..8ebb6a1b7d 100644 --- a/linux-user/microblaze/signal.c +++ b/linux-user/microblaze/signal.c @@ -161,17 +161,11 @@ void setup_rt_frame(int sig, struct target_sigaction *ka, /* Kernel does not use SA_RESTORER. */ - /* addi r12, r0, __NR_sigreturn */ - __put_user(0x31800000U | TARGET_NR_rt_sigreturn, frame->tramp + 0); - /* brki r14, 0x8 */ - __put_user(0xb9cc0008U, frame->tramp + 1); - /* * Return from sighandler will jump to the tramp. * Negative 8 offset because return is rtsd r15, 8 */ - env->regs[15] = - frame_addr + offsetof(struct target_rt_sigframe, tramp) - 8; + env->regs[15] = default_rt_sigreturn - 8; /* Set up registers for signal handler */ env->regs[1] = frame_addr; @@ -220,3 +214,19 @@ long do_rt_sigreturn(CPUMBState *env) force_sig(TARGET_SIGSEGV); return -TARGET_QEMU_ESIGRETURN; } + +void setup_sigtramp(abi_ulong sigtramp_page) +{ + uint32_t *tramp = lock_user(VERIFY_WRITE, sigtramp_page, 8, 0); + assert(tramp != NULL); + + /* + * addi r12, r0, __NR_rt_sigreturn + * brki r14, 0x8 + */ + __put_user(0x31800000U | TARGET_NR_rt_sigreturn, tramp); + __put_user(0xb9cc0008U, tramp + 1); + + default_rt_sigreturn = sigtramp_page; + unlock_user(tramp, sigtramp_page, 8); +} -- 2.25.1