From patchwork Fri Aug 2 23:56:04 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Warner Losh X-Patchwork-Id: 13752096 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 ABF1AC52D6D for ; Fri, 2 Aug 2024 23:58:51 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sa29j-0001wG-FW; Fri, 02 Aug 2024 19:57:55 -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 1sa29a-0001Tl-LV for qemu-devel@nongnu.org; Fri, 02 Aug 2024 19:57:46 -0400 Received: from mail-io1-xd29.google.com ([2607:f8b0:4864:20::d29]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sa29Z-0004EO-5H for qemu-devel@nongnu.org; Fri, 02 Aug 2024 19:57:46 -0400 Received: by mail-io1-xd29.google.com with SMTP id ca18e2360f4ac-8152f0c63c1so310173339f.1 for ; Fri, 02 Aug 2024 16:57:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bsdimp-com.20230601.gappssmtp.com; s=20230601; t=1722643063; x=1723247863; 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=i+M2MfyOC3APTOH0qT5489YkK6Lsz6CNB5NL1MMUEoY=; b=C/aJSUEOjiak6/wTjfAkly0xjzXO1HfzVJK6xhYJnAXxZtHpRALUAllEUO98BsvjD+ 3x5+1rzPvZgC22dhCxY/jUjr0KQlCCnzDt37ZzDrUkbLJ2+B05UlA7KtsnR3CUtUe0L9 f1KXrNnTjYKyTbzSd5Nj0ch4fC23ZfmOiP0+tVSo5p6ZpT613MhK5mRgiEbMcbWZvFZl rE9k5FtA//xFP+bc9gGvGXzeMysCdy60nuQwsNXL1cAR/BLF+Qg+OR0CT3IZBO9UOe7v AD5ArL3thBoQ/GF8iBlascgqNozVKvpxMMlGIiTjVKctkupWolNEMqFGKoVhicGtiZxA EVxA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1722643063; x=1723247863; 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=i+M2MfyOC3APTOH0qT5489YkK6Lsz6CNB5NL1MMUEoY=; b=TYdfH7Dep0Kh6DyTlr0TL6yBUWdfkPuPhkuKqcKRFgVK3V0bQIbol1IDH7o+qZhJPL OziT6Oy5lUjeNEP2hAwbfHbpgKN7+y2TIvFXd60yncRLCEWoulDFsuP/fXmfUIu1CfwT xkzmq4IgCt/zhd6S4bo84rt17OLHVWgMoensbkt+AuKht1xDGacnmLBnG9X0Aj4gzrVp D7uX49EAuCR0UTKHvTtKlAuFJ45BOB06iMp1M3qji79PSa0y9thnIMSoGYJXQ0ZT2NJO XW3HwF0vsKzxRk4bZTkxGVQz3gglQu04nnRcqB0yB1ebd5Kj42pWUk38yrwu3ApY4s1k nxBQ== X-Gm-Message-State: AOJu0YwcWgZxbXOSSmdqjyj14GfroobUu0y0yWnHKtHG9SpESizca04m NWpP3ExdawhXp/F0c9kpdOc6yyyTRzsRHtatRIvQ1bVyFzrYKf8okn4Qs7yW0Ce8sDvCb36pBVu EbOo= X-Google-Smtp-Source: AGHT+IGppSYYqBA7hedKkDI4HBy9gNIJuSyRuommAOrM1q9arH0ioYRQOjbSk/3u+KaDK4EMElyGNQ== X-Received: by 2002:a05:6602:2cc8:b0:81f:9826:19ff with SMTP id ca18e2360f4ac-81fd4374a3dmr708269339f.9.1722643063174; Fri, 02 Aug 2024 16:57:43 -0700 (PDT) Received: from dune.bsdimp.com ([50.253.99.174]) by smtp.gmail.com with ESMTPSA id 8926c6da1cb9f-4c8d69a8227sm683131173.47.2024.08.02.16.57.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 02 Aug 2024 16:57:42 -0700 (PDT) From: Warner Losh To: qemu-devel@nongnu.org Cc: Warner Losh , Kyle Evans , Jessica Clarke , Stacey Son , Justin Hibbits Subject: [PATCH 04/17] bsd-user: Implement cpu_copy() Date: Fri, 2 Aug 2024 17:56:04 -0600 Message-ID: <20240802235617.7971-5-imp@bsdimp.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240802235617.7971-1-imp@bsdimp.com> References: <20240802235617.7971-1-imp@bsdimp.com> MIME-Version: 1.0 Received-SPF: none client-ip=2607:f8b0:4864:20::d29; envelope-from=imp@bsdimp.com; helo=mail-io1-xd29.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=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: Stacey Son Catch up with 30ba0ee52d15 and implement cpu_copy(). It's needed for threading. Stacey's original code, with bug fixes from Jessica, Justin and myself. Signed-off-by: Stacey Son Signed-off-by: Jessica Clarke Signed-off-by: Justin Hibbits Signed-off-by: Warner Losh Reviewed-by: Richard Henderson --- bsd-user/main.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/bsd-user/main.c b/bsd-user/main.c index 1533fd51168..9ad31bd1efe 100644 --- a/bsd-user/main.c +++ b/bsd-user/main.c @@ -224,6 +224,37 @@ void init_task_state(TaskState *ts) }; } +CPUArchState *cpu_copy(CPUArchState *env) +{ + CPUState *cpu = env_cpu(env); + CPUState *new_cpu = cpu_create(cpu_type); + CPUArchState *new_env = cpu_env(new_cpu); + CPUBreakpoint *bp; + CPUWatchpoint *wp; + + /* Reset non arch specific state */ + cpu_reset(new_cpu); + + new_cpu->tcg_cflags = cpu->tcg_cflags; + memcpy(new_env, env, sizeof(CPUArchState)); + + /* + * Clone all break/watchpoints. + * Note: Once we support ptrace with hw-debug register access, make sure + * BP_CPU break/watchpoints are handled correctly on clone. + */ + QTAILQ_INIT(&cpu->breakpoints); + QTAILQ_INIT(&cpu->watchpoints); + QTAILQ_FOREACH(bp, &cpu->breakpoints, entry) { + cpu_breakpoint_insert(new_cpu, bp->pc, bp->flags, NULL); + } + QTAILQ_FOREACH(wp, &cpu->watchpoints, entry) { + cpu_watchpoint_insert(new_cpu, wp->vaddr, wp->len, wp->flags, NULL); + } + + return new_env; +} + void gemu_log(const char *fmt, ...) { va_list ap;