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([2607:fb90:80c8:6cf3:a91a:4957:ba18:ac18]) by smtp.gmail.com with ESMTPSA id z16-20020a056a00241000b004f3a647ae89sm24616248pfh.174.2022.04.21.08.17.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 21 Apr 2022 08:17:44 -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=PaaXZ26vJ/J580k0oNw8HgY94fKNXkF1jnEzhxfmRJs=; b=gHjUymsJQsjbYqIpp9EstcEJ2EYosUpEiV8t+OmJb+wQG8Y3WD582UVpMExpql6Yzz Q2x2oJemhuQzLeUsvcePFLUbbSA//Cja60cBSxfcR8Ai/dHH3l3JJ7BPWGnACCnBdMFM jgiBcgru1NiMq4xu5oQPluYk3fpRJ9DJ30trRsW1UnA2hjUcdsI+Y6SDmteyAY6gzyPt NMOUJLGZb7CLdT0/2PtjJC7j8Pl09XXheHqMFwzSvzo0PZl+Zuk0jeIH53Qj40npgc5l 9YUQa4BtABbhBa/UTeTnJ427U9T1ZBGJKIkgvSLtu429ZlFwKOwOpqyu4bktg2d+pj34 Kufw== 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=PaaXZ26vJ/J580k0oNw8HgY94fKNXkF1jnEzhxfmRJs=; b=cOJxnAQX16X2u4pa2nHd79epZT3NYRwow1+/ZzFg2tXE0kGYCbUu2UXJ770u7rUiE7 7Mj3nZ2sWjYLMMtrKb7usFftCYRNVRX611yr5jIKwToI5w9YMrFQV/G6XWR4NOdu7e32 BUJkBeuZ4FLiDxBCsnU3fc7mr7bpsnJNhBXPZzL9jOYjP8euFFKO5cvSTrRUdSIg5gVC uU92NXMbEqh60B6jWQ+W0qqlgP0nS4CzAsXkpf1g1KFnFLJG4P2UEDcySikKkmT+oKEK Y54JjTIzuWkWGH3bpnsSP39iz/Y88R5aMr4RPZlpbbapd+vlGjQmbal1o1pukCtNGVGw E/Gw== X-Gm-Message-State: AOAM530htFZTC0TUws/WbWo51SgyEiscS24FWDaXRfwxp9cL9OQGDzY5 wugpiJJckF2QlX4ic9nOeixTRrVDly35TA== X-Google-Smtp-Source: ABdhPJyVdiD5pz7w0hgSbo7b6RXhGuiLpzoPtK3Y9NgZ3muYNJMeEspnsN8LHEy8wt3MkVBfv15KjQ== X-Received: by 2002:a05:6a00:1a4a:b0:4f7:be32:3184 with SMTP id h10-20020a056a001a4a00b004f7be323184mr110717pfv.65.1650554264875; Thu, 21 Apr 2022 08:17:44 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 04/64] linux-user/nios2: Adjust error return Date: Thu, 21 Apr 2022 08:16:35 -0700 Message-Id: <20220421151735.31996-5-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220421151735.31996-1-richard.henderson@linaro.org> References: <20220421151735.31996-1-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::42c; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x42c.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: 1650555201050100002 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 --- 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