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[189.204.159.168]) by smtp.gmail.com with ESMTPSA id n62-20020acaef41000000b002ef646e6690sm4610331oih.53.2022.03.26.06.25.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 26 Mar 2022 06:25:46 -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=26hq51RiROI5XzJelEXkN2uWQhOSPbaaTZ3h8qaX6EQ=; b=tmp1KyD2RxKn8kkjT/Pq/xtKXGmQuRbrstjmfzhPbR2m3ehHWVK7Qihw7UoLYgIQQ+ CburleEMw7mmkyscoqqSU0cKSn+RU3jkueJfIAOrZKujoC9jCwVm7OchO2XbTW6fyyxj QvrzjkpNHfbZY6EqnOtmwYC5YB95uEJWhpJLkJzgFtSbgFPLv/MG7fG+g/to7gbq01LH 06NTba4kr17+0Ve9jbAfdB7qwqI2bW1u+4Dn89/gSxtA1htaPaaarEgb02PMCEE+mIIe Laa+lyxksZrKBGO/hkQOSapZ9y1nCWRFMtpAQhKplqoPZXtoeMN1mm7w8yHOkZrormCZ TYkA== 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=26hq51RiROI5XzJelEXkN2uWQhOSPbaaTZ3h8qaX6EQ=; b=otsr+34VDebvEJUQTa45lKhyL46aQl9Je8duDGLetopfgtnyMJ2VTe8hrM44/O/c99 sqZl3tc9FRmQgOgiQmzEhCx3GWJgKJk5kdn3NXHcnkyhwofkzyM//XFDSfd3MPlJP90a s079p00GMUowTQu0Mk2v5RTGzT0ejMU7bmCLfmiMiw4gasZzwevfyIOIvpB5tlC+9CJc 2QtJ3uHlBLs8zyFM725/ViTI1oYH+ovYVXXadnYG+0ykNRzWZS8o9knyAS2WCzJ4UIgJ VXhDAYKSvw3HWNUQUSCYVEbkBZC9tZnpOrAKph73JesoZyUgPZz0yo/jHbmMGyCjBrQg zQAQ== X-Gm-Message-State: AOAM533N+ePPnXapf4wErRdNG16kE5MXgNe4R/yzZJd0oW9Faq7yxwxr gpkQujEY+KS9k4nAC5HxI8jrn/MQLiraYc2a X-Google-Smtp-Source: ABdhPJxemYPCpugvFQmdrRJh9qiImeQJjwy1JMCMNLoYPSEDZ8np2dBx/wjG6YasVVlc3hkQhy0HYw== X-Received: by 2002:a05:6870:3394:b0:dd:cfdd:34c9 with SMTP id w20-20020a056870339400b000ddcfdd34c9mr11506299oae.31.1648301147081; Sat, 26 Mar 2022 06:25:47 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v2 4/8] linux-user/nios2: Adjust error return Date: Sat, 26 Mar 2022 07:24:54 -0600 Message-Id: <20220326132534.543738-8-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220326132534.543738-1-richard.henderson@linaro.org> References: <20220326132534.543738-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Host-Lookup-Failed: Reverse DNS lookup failed for 2001:4860:4864:20::2d (failed) 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=2001:4860:4864:20::2d; envelope-from=richard.henderson@linaro.org; helo=mail-oa1-x2d.google.com X-Spam_score_int: -6 X-Spam_score: -0.7 X-Spam_bar: / X-Spam_report: (-0.7 / 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, PDS_HP_HELO_NORDNS=0.659, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no 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: alex.bennee@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1648301591885100003 Content-Type: text/plain; charset="utf-8" Follow the kernel assembly, which considers all negative return values to be errors. 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 a285781fc5..969460df58 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 2.25.1