From patchwork Mon Nov 8 03:51:32 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Warner Losh X-Patchwork-Id: 12607633 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 719C1C433F5 for ; Mon, 8 Nov 2021 04:09:33 +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 306C861374 for ; Mon, 8 Nov 2021 04:09:33 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 306C861374 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bsdimp.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:60284 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mjvyO-0001f9-65 for qemu-devel@archiver.kernel.org; Sun, 07 Nov 2021 23:09:32 -0500 Received: from eggs.gnu.org ([209.51.188.92]:48568) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mjvi8-00070c-8I for qemu-devel@nongnu.org; Sun, 07 Nov 2021 22:52:44 -0500 Received: from [2607:f8b0:4864:20::130] (port=35442 helo=mail-il1-x130.google.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mjvi5-0002y3-U3 for qemu-devel@nongnu.org; Sun, 07 Nov 2021 22:52:43 -0500 Received: by mail-il1-x130.google.com with SMTP id w15so15558584ill.2 for ; Sun, 07 Nov 2021 19:52:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bsdimp-com.20210112.gappssmtp.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=U3NE49HODa5ve+oXzRvqylTHNWY8RpTmmQhoDiFbJDo=; b=If5wLTNQHcW/v2Nq6mErBbK1M18ydWGBtAMfaJ2cO5j9RifgdDyGyowYVI0T+WEeph ZB5JbyLLAwQHa+HFFPaG+08Zfh/epC62mpyNdUC3bKzBySwYjPcmWQCM3AdLJS3bBsI7 fgJQnetiM6OwoxAQgc7ZJ1H6zOvC+QRITjSjkaX4bMS6zGK8ogeb6VAMXSFtLo0f8I2K Yg7Eq7DOY/+8S+q87mbQGG9PBdBq2PRBFwyG2Bv4OImj0LZ6hIF0p3f6rvioGK+NHdJO qbJWdoQX88APRkkF9ifzyzXziVjdJJFQcDNsJgJYNp65PqeG/FG71eFvYPUPFVkY7Fs9 Znkw== 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=U3NE49HODa5ve+oXzRvqylTHNWY8RpTmmQhoDiFbJDo=; b=jiI1JlXGLbNaxUI/CDZYBWvDDfxW1DTsj0BNDrQm7nUUW+TZK8IZXcBxhNuCjF2J7z wGvgwBrx9JgXjBgQoxx5Bmv6gm4YZdlevrhPSvJWcNk25qEk8ZfPJ7OdIaWZKfWCcti/ Y4ytAMEhJ0O2lVF/e4S1eqxCFvdBTcKb8kUAgDYUtqKIarVm83Kyq9z4M98zb2WR0PBS s44J6AB40WdJdptrLiu+Q0RQUEGymRncmujn0VxTCitCiAAVMDN9atH3ajSro3VptZab 9QDTtndiDgdKoKKduYDOI8bQo4/f4snpabGNP0VbkMs8ocPhVydQlxYKzLcsczlYfaXn Lnfw== X-Gm-Message-State: AOAM533s8Tj+30nuTS1Mq9IM5ZDvxozYBVyYraOmxDrBrLZC093ZJFud qcH3jdTZTtiIssiYqhJotivlfZOGJjXT4A== X-Google-Smtp-Source: ABdhPJzL6kakMTUq2pFbMI+pQ/96aPiPp8+OeYvOu2p7+sO906c7qAEbS2uYqtw9x1MbHw34Cl5rmg== X-Received: by 2002:a92:c8c6:: with SMTP id c6mr42754088ilq.54.1636343560668; Sun, 07 Nov 2021 19:52:40 -0800 (PST) Received: from dune.bsdimp.com (50-253-99-174-static.hfc.comcastbusiness.net. [50.253.99.174]) by smtp.gmail.com with ESMTPSA id x15sm876909iob.8.2021.11.07.19.52.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 07 Nov 2021 19:52:40 -0800 (PST) From: Warner Losh To: qemu-devel@nongnu.org Subject: [PATCH v5 33/37] bsd-user/arm/signal.c: arm get_mcontext Date: Sun, 7 Nov 2021 20:51:32 -0700 Message-Id: <20211108035136.43687-34-imp@bsdimp.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20211108035136.43687-1-imp@bsdimp.com> References: <20211108035136.43687-1-imp@bsdimp.com> MIME-Version: 1.0 X-Host-Lookup-Failed: Reverse DNS lookup failed for 2607:f8b0:4864:20::130 (failed) Received-SPF: none client-ip=2607:f8b0:4864:20::130; envelope-from=imp@bsdimp.com; helo=mail-il1-x130.google.com X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, PDS_HP_HELO_NORDNS=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Stacey Son , qemu-trivial@nongnu.org, Kyle Evans , Michael Tokarev , Laurent Vivier , Philippe Mathieu-Daude , Richard Henderson , Warner Losh Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Get the machine context from the CPU state. Signed-off-by: Stacey Son Signed-off-by: Kyle Evans Signed-off-by: Warner Losh Reviewed-by: Richard Henderson --- bsd-user/arm/signal.c | 51 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) diff --git a/bsd-user/arm/signal.c b/bsd-user/arm/signal.c index 3c0db30a85..93c9bfc0d3 100644 --- a/bsd-user/arm/signal.c +++ b/bsd-user/arm/signal.c @@ -58,3 +58,54 @@ abi_long set_sigtramp_args(CPUARMState *env, int sig, return 0; } + +/* + * Compare to arm/arm/machdep.c get_mcontext() + * Assumes that the memory is locked if mcp points to user memory. + */ +abi_long get_mcontext(CPUARMState *env, target_mcontext_t *mcp, int flags) +{ + int err = 0; + uint32_t *gr = mcp->__gregs; + + if (mcp->mc_vfp_size != 0 && mcp->mc_vfp_size != sizeof(target_mcontext_vfp_t)) { + return -TARGET_EINVAL; + } + + gr[TARGET_REG_CPSR] = tswap32(cpsr_read(env)); + if (flags & TARGET_MC_GET_CLEAR_RET) { + gr[TARGET_REG_R0] = 0; + gr[TARGET_REG_CPSR] &= ~CPSR_C; + } else { + gr[TARGET_REG_R0] = tswap32(env->regs[0]); + } + + gr[TARGET_REG_R1] = tswap32(env->regs[1]); + gr[TARGET_REG_R2] = tswap32(env->regs[2]); + gr[TARGET_REG_R3] = tswap32(env->regs[3]); + gr[TARGET_REG_R4] = tswap32(env->regs[4]); + gr[TARGET_REG_R5] = tswap32(env->regs[5]); + gr[TARGET_REG_R6] = tswap32(env->regs[6]); + gr[TARGET_REG_R7] = tswap32(env->regs[7]); + gr[TARGET_REG_R8] = tswap32(env->regs[8]); + gr[TARGET_REG_R9] = tswap32(env->regs[9]); + gr[TARGET_REG_R10] = tswap32(env->regs[10]); + gr[TARGET_REG_R11] = tswap32(env->regs[11]); + gr[TARGET_REG_R12] = tswap32(env->regs[12]); + + gr[TARGET_REG_SP] = tswap32(env->regs[13]); + gr[TARGET_REG_LR] = tswap32(env->regs[14]); + gr[TARGET_REG_PC] = tswap32(env->regs[15]); + + if (mcp->mc_vfp_size != 0 && mcp->mc_vfp_ptr != 0) { + /* see get_vfpcontext in sys/arm/arm/exec_machdep.c */ + target_mcontext_vfp_t *vfp; + vfp = lock_user(VERIFY_WRITE, mcp->mc_vfp_ptr, sizeof(*vfp), 0); + for (int i = 0; i < 32; i++) { + vfp->mcv_reg[i] = tswap64(*aa32_vfp_dreg(env, i)); + } + vfp->mcv_fpscr = tswap32(vfp_get_fpscr(env)); + unlock_user(vfp, mcp->mc_vfp_ptr, sizeof(*vfp)); + } + return err; +}