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[173.197.107.21]) by smtp.gmail.com with ESMTPSA id b129sm9745933pgc.52.2021.01.15.13.53.51 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 15 Jan 2021 13:53:53 -0800 (PST) Subject: Re: [PATCH 04/15] arc: TCG and decoder glue code and helpers To: Cupertino Miranda , "cupertinomiranda@gmail.com" , "qemu-devel@nongnu.org" References: <20201111161758.9636-1-cupertinomiranda@gmail.com> <20201111161758.9636-5-cupertinomiranda@gmail.com> <33ba8432-64c7-db76-459c-5fa6fd7e549a@linaro.org> <826051d0-623c-9e29-e62d-8c3818c3e0af@synopsys.com> From: Richard Henderson Message-ID: <83e57a69-5d2f-0c6d-4f65-44ef0669d71e@linaro.org> Date: Fri, 15 Jan 2021 11:53:49 -1000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <826051d0-623c-9e29-e62d-8c3818c3e0af@synopsys.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2607:f8b0:4864:20::532; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x532.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, NICE_REPLY_A=-0.001, 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: Shahab Vahedi , Claudiu Zissulescu , "linux-snps-arc@lists.infradead.org" , Claudiu Zissulescu , Shahab Vahedi Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 1/15/21 11:48 AM, Cupertino Miranda wrote: >> In the case of enter or leave, this is one load/store plus one addition, >> followed by a branch. All of which is encoded as fields in the instruction. >> Extremely simple. > > So your recommendation is leave the conditional exception triggering of > enter and leave in a helper and move the loads/stores to tcg ? What? No. r~