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[174.21.142.130]) by smtp.gmail.com with ESMTPSA id j7-20020a056a00130700b004b9f7cd94a4sm16482827pfu.56.2022.04.26.11.19.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 26 Apr 2022 11:19:12 -0700 (PDT) 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=Cz85jXXNTXB185MIdFgmydKGclnlgZjRARJ6+y2fc4Y=; b=FP1MY99p6xmAdx+EPVzcnZ4AoJgvPHtHs5o6Ra846zjDuq9HdM3shz3u971zdt/ImU VQyNf2d9ycGiQq8KOn7E6fRQGELzjA7QV9/Yh5fNNstJ49dBz9PO5e/FawvWHZjwsqKr hMgcYD5S61oWcVXQsMsULrlxzbpXOmkJF4obYn9QAb0WuHiHX2bUERpm70CHucW2mWt6 G7QFiqbp2j+d1lLeNLwMRLR5XnTAlQuONFN2W+fKrLuA5oe03EaI3ROvqP5DWQ5hpRpr 2cL/imdMWJq5u/qMRF3sYyGHE4SFxH5yjGhv7GUiXL+6QwjFpI8kF7L8HdHjwmqjXBUX zjYA== 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=Cz85jXXNTXB185MIdFgmydKGclnlgZjRARJ6+y2fc4Y=; b=TOULU6JWzBTBnenv1CuIeEefdYW7Niy6yn7/w2BDMiX2AD0jbygCfYIHkYKcs611Ju mb/skhpCLeQ0D3Wfz4hFUG1S21K+md7ljzDcxPWHTbgjJ8ZTVlfoQzlBRlVSfFmAPK45 ZsFhOAxzhAFfElp2OWRM/q1VkDtcq3d0eMev5m2Eb8CJxA7gheDuGxh6mg4mZ6DNMsMx /SGhw026E0VUjbeDdGFhf/NA6TZWJ6kcssQeZuni4fC8uzGKe067v6eT3FAU6c3a/BFR uMXl9qNgiAo8z79rvvXHZTClMUhP9O0JK7rdG3twTJG5BWYR2iEgYOLqkR/LBylXvwSw u8Hg== X-Gm-Message-State: AOAM533JI712Z59SFFvsEhYijbmwvhE0jNz7vPZ7SBkoWZZx0U4hMuHC 51EW0ZByjis7kQUsu9LQ8EyXcIhuJtfSpw== X-Google-Smtp-Source: ABdhPJyFzcP9f33jtk7j2o3tqv8JSSkVNm24AAaJUqfs4/tUvXcgENGSjVbNFsD3llEDhdHz/dhzxw== X-Received: by 2002:a05:6a00:1903:b0:4fa:fa9e:42e6 with SMTP id y3-20020a056a00190300b004fafa9e42e6mr25683929pfi.1.1650997152488; Tue, 26 Apr 2022 11:19:12 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PULL 04/68] linux-user/nios2: Adjust error return Date: Tue, 26 Apr 2022 11:18:03 -0700 Message-Id: <20220426181907.103691-5-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220426181907.103691-1-richard.henderson@linaro.org> References: <20220426181907.103691-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::432; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x432.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, T_SCC_BODY_TEXT_LINE=-0.01 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: , Cc: Peter Maydell Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1650998135340100001 Content-Type: text/plain; charset="utf-8" Follow the kernel assembly, which considers all negative return values to be errors. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson Message-Id: <20220421151735.31996-5-richard.henderson@linaro.org> --- linux-user/nios2/cpu_loop.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/linux-user/nios2/cpu_loop.c b/linux-user/nios2/cpu_loop.c index 91737c568f..63afba5862 100644 --- a/linux-user/nios2/cpu_loop.c +++ b/linux-user/nios2/cpu_loop.c @@ -55,9 +55,14 @@ void cpu_loop(CPUNios2State *env) env->regs[7], env->regs[8], env->regs[9], 0, 0); =20 + /* + * See the code after translate_rc_and_ret: all negative + * values are errors (aided by userspace restricted to 2G), + * errno is returned positive in r2, and error indication + * is a boolean in r7. + */ env->regs[2] =3D abs(ret); - /* Return value is 0..4096 */ - env->regs[7] =3D ret > 0xfffff000u; + env->regs[7] =3D ret < 0; break; =20 case 1: --=20 2.34.1