From patchwork Sat Mar 6 21:35:51 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Richard Henderson X-Patchwork-Id: 394556 Delivered-To: patch@linaro.org Received: by 2002:a02:8562:0:0:0:0:0 with SMTP id g89csp549932jai; Sat, 6 Mar 2021 13:39:06 -0800 (PST) X-Google-Smtp-Source: ABdhPJyclvby7/THNTW9F9GT5lR4e8TiImy62cPsaU0r65Z9Fa0nblToHItHKoGKAbYtfQORzpWQ X-Received: by 2002:a25:8712:: with SMTP id a18mr23330165ybl.306.1615066746296; Sat, 06 Mar 2021 13:39:06 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1615066746; cv=none; d=google.com; s=arc-20160816; b=HCGt6EQJcG4G/gcJF+d3Z2aJJS5s7mIB1E2/0vkTT9x6S2YCYwIbsDW2e3BQQYAStM 7bJLRa5bGKsuaTkmw7MC9BwMfzGyYQCpT8bxEPo6Y/QMGHqOdXaGAteZy64sgYY076JF q0BzqsU/+nr7ud4sws/72iGDyV84QAWNYaRwlLVVDVIW33poxK/Gv3KlQtX7wQ4b0GAb LJNm6Vd4qTVuLvEw8/AYLG5c/nSgT+YYJZNw3bb5i8LrLf/uJ1GpoWtfS/akK8X5LAnb ITOBOW8h/E1h3/z+Ss76jYET3HiBFwiT+0OW+IQziKl0u2HUvwjHdm2BiHjjA0bzGlrH ftcQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:cc:list-subscribe:list-help:list-post:list-archive :list-unsubscribe:list-id:precedence:content-transfer-encoding :mime-version:references:in-reply-to:message-id:date:subject:to:from :dkim-signature; bh=myPurBGQOJ9HRp/gWQglk2sYpbZ88UPxyO7dwBmpmMU=; b=csBXhy7PO5xv+OXSLLdajwYnlmzuNARgzfComV5DHuD1xPrkGfyAAhFxGTaGxKurhX 64L3g1q6RN2xIQ7nD6COYi5X09vyysu5pEcrJKVTMHBsoze8nrvSYi9ok4TJu+0v0q9n 1x9MOg+tH+lpx/m86FAVCQFSLeQu9QVuXsULiBspFcnTTvNGLui5qzaqIQ2/2II/Ky0A Kfv9KHSlW84iDpfB7VeRGJemUASC3UfH+ZRP4Od7HVAOhoLSyDT7wI+ukM1wIBnW/Gbe fvOOBNOJ9x2sSFA47I8TGzZIt9ZwFg+Cei4qk7+kUc62NGtb1bJlfwFiU+ViltvAzjTB V+CQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=m1Ai1dw9; spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+patch=linaro.org@nongnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Return-Path: Received: from lists.gnu.org (lists.gnu.org. [209.51.188.17]) by mx.google.com with ESMTPS id y1si7081338ybq.124.2021.03.06.13.39.06 for (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Sat, 06 Mar 2021 13:39:06 -0800 (PST) Received-SPF: pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=m1Ai1dw9; spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+patch=linaro.org@nongnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: from localhost ([::1]:55330 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lIedd-00021j-Ne for patch@linaro.org; Sat, 06 Mar 2021 16:39:05 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:56728) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lIeb1-0006vk-TR for qemu-devel@nongnu.org; Sat, 06 Mar 2021 16:36:25 -0500 Received: from mail-pf1-x42e.google.com ([2607:f8b0:4864:20::42e]:39097) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lIeaz-0002wq-UD for qemu-devel@nongnu.org; Sat, 06 Mar 2021 16:36:23 -0500 Received: by mail-pf1-x42e.google.com with SMTP id 18so4646694pfo.6 for ; Sat, 06 Mar 2021 13:36:21 -0800 (PST) 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=myPurBGQOJ9HRp/gWQglk2sYpbZ88UPxyO7dwBmpmMU=; b=m1Ai1dw9Za2kqbDvuaKHBLrY1mMGZR+HzdzI5hAX+4V0K0PRn1V3NrF1bEPOZqodSM UWiZ/7MEFLXbu8wjKqbJSw0W3NN/X7H7qFWnqzVuX1ElhFIRGOKNXxVhkwgGTx3JrKf+ N4ZCq+P9b8tvYoPzB1B1MeYiNkpp2e6kJgwW3/AfTJBRU3TpZDlqxWvokHAqDTVp7NY7 h6XdbTPf0LZxSrLiosV+DiukBsdvBdbQm1MqeAfco+A0Jbz/7okO74zqYtq4ueA/Dm9S 9dV4g9DNauy+FGsTWIDyWkoStzDdP6VLngPuRqKT+3o/jhn/2J0QeeFXPl42BMpOwutb oLcQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=myPurBGQOJ9HRp/gWQglk2sYpbZ88UPxyO7dwBmpmMU=; b=qdK9zZ4j4kTUxOPkratyn2mDNurdSJAkE4ZFe1juAQmSLGEfzyWe/1Be9Q/yMhUO2R 5GnME5VtonwsAAx6Y7NXoUgeIvWlrSRq9Czno9F8l2pwHpkbaHoOpNEwNTgxNCw///DR V54AlQcy9aTh2AHggHswoG7Iv6nYKxYKTmNZoOF5IGOR2SccHUIrvTFMLEz/DL+Qr/Ve xtjzkXHze1+rMFhwW8rih3VDksh+DI06A7KswQo1kAIpcrpZsbFXWhJKrH56evnWcLbl /90fRo9tWNHUZ9iAHq5RBID4L8Smv0aqlVz9lchvURnjyw02S0aSgmECSKIFxprd7UBg iIFQ== X-Gm-Message-State: AOAM532pghlo4i/q1H3DRqR0HCaR02bE7IArXYyp1QD9A8/l9Tc7rZaj u7dRXhnwEM6vCtUowokzSPZOc45g9MH1kg== X-Received: by 2002:a63:1958:: with SMTP id 24mr14477563pgz.320.1615066580592; Sat, 06 Mar 2021 13:36:20 -0800 (PST) Received: from localhost.localdomain ([71.212.131.83]) by smtp.gmail.com with ESMTPSA id r30sm6365616pgu.86.2021.03.06.13.36.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 06 Mar 2021 13:36:20 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PULL 05/27] tcg: Split out tcg_raise_tb_overflow Date: Sat, 6 Mar 2021 13:35:51 -0800 Message-Id: <20210306213613.85168-6-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210306213613.85168-1-richard.henderson@linaro.org> References: <20210306213613.85168-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::42e; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x42e.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: peter.maydell@linaro.org, =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: "Qemu-devel" Allow other places in tcg to restart with a smaller tb. Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Richard Henderson --- tcg/tcg.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) -- 2.25.1 diff --git a/tcg/tcg.c b/tcg/tcg.c index 63a12b197b..bbe3dcee03 100644 --- a/tcg/tcg.c +++ b/tcg/tcg.c @@ -346,6 +346,12 @@ static void set_jmp_reset_offset(TCGContext *s, int which) s->tb_jmp_reset_offset[which] = tcg_current_code_size(s); } +/* Signal overflow, starting over with fewer guest insns. */ +static void QEMU_NORETURN tcg_raise_tb_overflow(TCGContext *s) +{ + siglongjmp(s->jmp_trans, -2); +} + #define C_PFX1(P, A) P##A #define C_PFX2(P, A, B) P##A##_##B #define C_PFX3(P, A, B, C) P##A##_##B##_##C @@ -1310,8 +1316,7 @@ static TCGTemp *tcg_temp_alloc(TCGContext *s) int n = s->nb_temps++; if (n >= TCG_MAX_TEMPS) { - /* Signal overflow, starting over with fewer guest insns. */ - siglongjmp(s->jmp_trans, -2); + tcg_raise_tb_overflow(s); } return memset(&s->temps[n], 0, sizeof(TCGTemp)); }