From patchwork Mon Sep 16 15:51:17 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ajeet Singh X-Patchwork-Id: 13805610 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id E8978C3ABA2 for ; Mon, 16 Sep 2024 15:53:51 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sqE1o-0000qH-Kt; Mon, 16 Sep 2024 11:52:40 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sqE1h-0000BG-P3; Mon, 16 Sep 2024 11:52:36 -0400 Received: from mail-pl1-x62a.google.com ([2607:f8b0:4864:20::62a]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sqE1f-0000Xc-Cx; Mon, 16 Sep 2024 11:52:33 -0400 Received: by mail-pl1-x62a.google.com with SMTP id d9443c01a7336-2068acc8b98so41074865ad.3; Mon, 16 Sep 2024 08:52:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1726501949; x=1727106749; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=gy74LlRTmtwc1XLq4kdnjaS7OlYM0YhDmnWN/nXgpX8=; b=l7Sdz9yewldxuG54C1sluF7w8G5hMDWw2du2u5NyLevGMcyMYEJKLtmEt1/6pyjZYb cao0ECjMwOHGzS9jFudjxpvV0cHwAubq7WstoLl6IoXK5H7Pl73rkCah9/gRDnbVivri jLhOmmo73JYMNbCou7Mtr0rDolfkyRpPu62qoWDw42xPuP7F4so4W9buEixgKLWSqF/O m3E5vWCgaiiF7cFgPVxXn6/Vnk2F5Enb0N5w9XDQ7JFgFWtfP7GuMhdXpUDyVYKwCTKk QqVZ23YG32+ql2fZS40nojrB+AQCt0arivnj04+MBdVYwtTD84aAX012fFWnGMKVCl8/ OCgA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1726501949; x=1727106749; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=gy74LlRTmtwc1XLq4kdnjaS7OlYM0YhDmnWN/nXgpX8=; b=llXWfVdk3m+fM7Hp0S/kKAZ1iCMfKQhy05TNofKC9ip2vbsHUoUgK+sn+F//0InaVO NJELkf3nQ0/QK0YO5W3qZr8Wmf/LNwPi3UnHkxE7EOH7CciOPzfKHE0MccfJ4zEsnCfw MBtJBhOY1lwEqS6KeQ6+PQqBDwyszCeONL01HIE16nRFhbMRUpEeAc8xkwpd1clkmQwq Wj6mTGAy2+7cg135BNJ3UKDbr/IwQ0E2TYKAjZ2hL0sDkCQcCAL6WbV25Tv/ML08kjZ7 mQvod3hiWh0U53FEOpaneN7Cnxp86121XVcaW4/MOSAelxgFGmII3SiN7Gb1CCCrdc6G wrdA== X-Forwarded-Encrypted: i=1; AJvYcCWMIe9E2ik7lk0XantY2AbyPSkkB9BpLhByzwASB/WckNLRcKvP9birRAphWNx7OovwHAHm4x7bXR3d@nongnu.org X-Gm-Message-State: AOJu0Yw3Z4UGQHvJPRha042Vr+QIGRTkMBzJMS02WK2/sDTRk5bwR0lE hdEYmmEDB4o1EtXgrl3NflFq/X1KzhpclbKRwfdjNTOQG1gvUJYFZ0KigRYc X-Google-Smtp-Source: AGHT+IGgk6+966iMiNmvFsxvh5f1gxq8lekqd9CfDXwlcR5kBFWJGnOfck2PHGJtAGZUMDBLXOdPzw== X-Received: by 2002:a17:902:d4c1:b0:205:913b:d9ad with SMTP id d9443c01a7336-2076d6268ffmr214405795ad.0.1726501949300; Mon, 16 Sep 2024 08:52:29 -0700 (PDT) Received: from localhost.localdomain (27-32-110-191.tpgi.com.au. [27.32.110.191]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-207946046cbsm37482545ad.105.2024.09.16.08.52.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 16 Sep 2024 08:52:28 -0700 (PDT) From: Ajeet Singh X-Google-Original-From: Ajeet Singh To: qemu-devel@nongnu.org Cc: Alistair Francis , Mark Corbin , qemu-riscv@nongnu.org, Warner Losh , Daniel Henrique Barboza , Ajeet Singh , Richard Henderson Subject: [PATCH v7 15/17] bsd-user: Implement 'get_mcontext' for RISC-V Date: Tue, 17 Sep 2024 01:51:17 +1000 Message-Id: <20240916155119.14610-16-itachis@FreeBSD.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240916155119.14610-1-itachis@FreeBSD.org> References: <20240916155119.14610-1-itachis@FreeBSD.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::62a; envelope-from=itachis6234@gmail.com; helo=mail-pl1-x62a.google.com X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 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, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, 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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Mark Corbin Added the 'get_mcontext' function to extract and populate the RISC-V machine context from the CPU state. This function is used to gather the current state of the general-purpose registers and store it in a 'target_mcontext_' structure. Signed-off-by: Mark Corbin Signed-off-by: Ajeet Singh Signed-off-by: Warner Losh Co-authored-by: Warner Losh Reviewed-by: Richard Henderson --- bsd-user/riscv/signal.c | 53 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) diff --git a/bsd-user/riscv/signal.c b/bsd-user/riscv/signal.c index 2597fec2fd..072ad821d2 100644 --- a/bsd-user/riscv/signal.c +++ b/bsd-user/riscv/signal.c @@ -61,3 +61,56 @@ abi_long setup_sigframe_arch(CPURISCVState *env, abi_ulong frame_addr, get_mcontext(env, mcp, flags); return 0; } + +/* + * Compare with get_mcontext() in riscv/riscv/machdep.c + * Assumes that the memory is locked if mcp points to user memory. + */ +abi_long get_mcontext(CPURISCVState *regs, target_mcontext_t *mcp, + int flags) +{ + + mcp->mc_gpregs.gp_t[0] = tswap64(regs->gpr[5]); + mcp->mc_gpregs.gp_t[1] = tswap64(regs->gpr[6]); + mcp->mc_gpregs.gp_t[2] = tswap64(regs->gpr[7]); + mcp->mc_gpregs.gp_t[3] = tswap64(regs->gpr[28]); + mcp->mc_gpregs.gp_t[4] = tswap64(regs->gpr[29]); + mcp->mc_gpregs.gp_t[5] = tswap64(regs->gpr[30]); + mcp->mc_gpregs.gp_t[6] = tswap64(regs->gpr[31]); + + mcp->mc_gpregs.gp_s[0] = tswap64(regs->gpr[8]); + mcp->mc_gpregs.gp_s[1] = tswap64(regs->gpr[9]); + mcp->mc_gpregs.gp_s[2] = tswap64(regs->gpr[18]); + mcp->mc_gpregs.gp_s[3] = tswap64(regs->gpr[19]); + mcp->mc_gpregs.gp_s[4] = tswap64(regs->gpr[20]); + mcp->mc_gpregs.gp_s[5] = tswap64(regs->gpr[21]); + mcp->mc_gpregs.gp_s[6] = tswap64(regs->gpr[22]); + mcp->mc_gpregs.gp_s[7] = tswap64(regs->gpr[23]); + mcp->mc_gpregs.gp_s[8] = tswap64(regs->gpr[24]); + mcp->mc_gpregs.gp_s[9] = tswap64(regs->gpr[25]); + mcp->mc_gpregs.gp_s[10] = tswap64(regs->gpr[26]); + mcp->mc_gpregs.gp_s[11] = tswap64(regs->gpr[27]); + + mcp->mc_gpregs.gp_a[0] = tswap64(regs->gpr[10]); + mcp->mc_gpregs.gp_a[1] = tswap64(regs->gpr[11]); + mcp->mc_gpregs.gp_a[2] = tswap64(regs->gpr[12]); + mcp->mc_gpregs.gp_a[3] = tswap64(regs->gpr[13]); + mcp->mc_gpregs.gp_a[4] = tswap64(regs->gpr[14]); + mcp->mc_gpregs.gp_a[5] = tswap64(regs->gpr[15]); + mcp->mc_gpregs.gp_a[6] = tswap64(regs->gpr[16]); + mcp->mc_gpregs.gp_a[7] = tswap64(regs->gpr[17]); + + if (flags & TARGET_MC_GET_CLEAR_RET) { + mcp->mc_gpregs.gp_a[0] = 0; /* a0 */ + mcp->mc_gpregs.gp_a[1] = 0; /* a1 */ + mcp->mc_gpregs.gp_t[0] = 0; /* clear syscall error */ + } + + mcp->mc_gpregs.gp_ra = tswap64(regs->gpr[1]); + mcp->mc_gpregs.gp_sp = tswap64(regs->gpr[2]); + mcp->mc_gpregs.gp_gp = tswap64(regs->gpr[3]); + mcp->mc_gpregs.gp_tp = tswap64(regs->gpr[4]); + mcp->mc_gpregs.gp_sepc = tswap64(regs->pc); + + return 0; +}