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[81.231.232.130]) by smtp.gmail.com with ESMTPSA id k23sm377253ljk.37.2020.08.27.03.22.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Aug 2020 03:22:17 -0700 (PDT) Date: Thu, 27 Aug 2020 12:22:17 +0200 From: "Edgar E. Iglesias" To: Richard Henderson Subject: Re: [PATCH 00/77] target/microblaze improvements Message-ID: <20200827102217.GN2954729@toto> References: <20200825205950.730499-1-richard.henderson@linaro.org> <20200827091128.GK2954729@toto> <1628c0ac-db22-ef9d-22e2-6a167ceaaf55@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1628c0ac-db22-ef9d-22e2-6a167ceaaf55@linaro.org> Received-SPF: pass client-ip=2a00:1450:4864:20::243; envelope-from=edgar.iglesias@gmail.com; helo=mail-lj1-x243.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. X-Spam_score_int: 10 X-Spam_score: 1.0 X-Spam_bar: + X-Spam_report: (1.0 / 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, FREEMAIL_FROM=0.001, FSL_HELO_FAKE=3.066, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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: qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Thu, Aug 27, 2020 at 03:01:57AM -0700, Richard Henderson wrote: > On 8/27/20 2:11 AM, Edgar E. Iglesias wrote: > > So a first general regression is that opcode 0 no longer > > traps as an illegal instruction (seems to be treated as an > > add with all r0). > > Oops, will fix. Thanks. Here's another issue, it seems some branches are jumping to the wrong address. This is a disasm from a failing case: 0x00000000ffd033a0: brlid r15, -636 // 0xffffffffffd03124 0x00000000ffd033a4: or r0, r0, r0 0x00000000ffa73124: Address 0xffa73124 is out of bounds. 0x00000000ffa73128: Address 0xffa73128 is out of bounds. This one is from a working one: 0x00000000ffd033a0: brlid r15, -636 // 0xffffffffffd03124 0x00000000ffd033a4: or r0, r0, r0 -------------- 0x00000000ffd03124: imm -40 0x00000000ffd03128: lwi r3, r0, 268 0x00000000ffd0312c: imm -40 0x00000000ffd03130: lwi r4, r0, 256 0x00000000ffd03134: srl r3, r3 0x00000000ffd03138: bsrli r4, r4, 23 0x00000000ffd0313c: andi r3, r3, 1 0x00000000ffd03140: rtsd r15, 8 0x00000000ffd03144: and r3, r4, r3