From patchwork Fri Aug 2 08:34:21 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ajeet Singh X-Patchwork-Id: 13751244 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 24637C3DA49 for ; Fri, 2 Aug 2024 08:36:55 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sZnkt-0001cO-IF; Fri, 02 Aug 2024 04:35:19 -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 1sZnkr-0001LO-7Z for qemu-devel@nongnu.org; Fri, 02 Aug 2024 04:35:17 -0400 Received: from mail-oa1-x36.google.com ([2001:4860:4864:20::36]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sZnkp-0006jS-Gi for qemu-devel@nongnu.org; Fri, 02 Aug 2024 04:35:16 -0400 Received: by mail-oa1-x36.google.com with SMTP id 586e51a60fabf-26119999171so5423885fac.2 for ; Fri, 02 Aug 2024 01:35:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1722587714; x=1723192514; 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=ub55mYjo8eKJZWzZaO7/xrNx8gK4oU8jbRvbKSQQd5Y=; b=MFG1soC4yxYMrX5w9nbp8SR/9YQR2+Xxq+LB6IWZtGA34US9UAvVdYHy1jaKtA//Ec XYJ/6sSQchs8Ts+87P7K7a32wtrUn17liJvVTUd2s1pYthZwJx3AYpvVG2Dsm//8Q77J m/vHUCsg+JfT9sso5+0w3CVgp3+IezZxdQEUCVSNlLiURJue8T5WdMbaF/ezv8a3pHhd a7WdPAGTeuHxgE6OTCSyv/IIMbMgvMbQsTwDJm1LZ7q1PXmyLI2Cg96oD2fTxDGpuGXc 5EGdlnJKiRpat/TR/gQtdnDnYrWye9MxQtjLongS8UgMh+NQNtC/EOZPWIZaPgghWHTi /ZNg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1722587714; x=1723192514; 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=ub55mYjo8eKJZWzZaO7/xrNx8gK4oU8jbRvbKSQQd5Y=; b=fz10RtFq65RF4ydw+FyPf9zLryRDhYt4SQC0M7vDy95jyeHgD/ZyTC9I6bmwaBJLhj DMgfet98n3ndj4+R3PFeBM+wKQzqTt5qoPEU2YsIykM8ts4t7p5+584pklnDp/36FjDR TNls+5UBIvkl10QkEvOBgRiLajX2nCuW6ZYWu66DPeca/1XfEdv1UBX0kTa5RyUAmLkF 0BXtyoLAdL8CiH2vK5cjrc3P3Bsf62VHlaLmEQOPsvCOxhctsiL/+t91HbGJM0d8t7Q0 GW/0TMNjp44iUrJs7sS0oFlfWqxNedTtD0iVVYil8FGNAyux4RqwZawsgvbcL+HYL5jr YgOQ== X-Gm-Message-State: AOJu0YyQKsBtpEqBLUamZAAYv+/eifZGwECRvySVmo0GLrAGjwGpHVNZ g32H703Qwb8ki9SZRp514B4iu0zuib35k7e+2w347VWBIls1BJuQgxLjHIiWvt4= X-Google-Smtp-Source: AGHT+IFzsCKjI+rRpax3TY45SOh3hzfHbWHpkgts8Iv7hNVWKfDC5QVqwxGqAmlEB9B91Dkvig3ogA== X-Received: by 2002:a05:6870:9122:b0:260:fda4:365a with SMTP id 586e51a60fabf-26891ed43f5mr3346061fac.33.1722587714005; Fri, 02 Aug 2024 01:35:14 -0700 (PDT) Received: from localhost.localdomain ([203.87.101.91]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-7106ec06a25sm951673b3a.33.2024.08.02.01.35.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 02 Aug 2024 01:35:13 -0700 (PDT) From: Ajeet Singh X-Google-Original-From: Ajeet Singh To: qemu-devel@nongnu.org Cc: Warner Losh , Mark Corbin , Ajeet Singh Subject: [PATCH 16/18] bsd-user: Implement 'get_mcontext' for RISC-V Date: Fri, 2 Aug 2024 18:34:21 +1000 Message-Id: <20240802083423.142365-17-itachis@FreeBSD.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240802083423.142365-1-itachis@FreeBSD.org> References: <20240802083423.142365-1-itachis@FreeBSD.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2001:4860:4864:20::36; envelope-from=itachis6234@gmail.com; helo=mail-oa1-x36.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 005eb53cab..be6aa8efc2 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; +}