Message ID | 20200825205950.730499-76-richard.henderson@linaro.org |
---|---|
State | New |
Headers | show
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[216.228.167.147]) by smtp.gmail.com with ESMTPSA id k4sm16074pgr.87.2020.08.25.14.01.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 25 Aug 2020 14:01:29 -0700 (PDT) From: Richard Henderson <richard.henderson@linaro.org> To: qemu-devel@nongnu.org Subject: [PATCH 75/77] target/microblaze: Remove cpu_R[0] Date: Tue, 25 Aug 2020 13:59:48 -0700 Message-Id: <20200825205950.730499-76-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200825205950.730499-1-richard.henderson@linaro.org> References: <20200825205950.730499-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::442; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x442.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: -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 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: <qemu-devel.nongnu.org> List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>, <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe> List-Archive: <https://lists.nongnu.org/archive/html/qemu-devel> List-Post: <mailto:qemu-devel@nongnu.org> List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help> List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>, <mailto:qemu-devel-request@nongnu.org?subject=subscribe> Cc: edgar.iglesias@gmail.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" <qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org> |
Series |
target/microblaze improvements
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expand
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diff --git a/target/microblaze/translate.c b/target/microblaze/translate.c index 2df22e8c2a..c8eb68ce4b 100644 --- a/target/microblaze/translate.c +++ b/target/microblaze/translate.c @@ -1875,7 +1875,13 @@ void mb_tcg_init(void) static const struct { TCGv_i32 *var; int ofs; char name[8]; } i32s[] = { - R(0), R(1), R(2), R(3), R(4), R(5), R(6), R(7), + /* + * Note that r0 is handled specially in reg_for_read + * and reg_for_write. Nothing should touch cpu_R[0]. + * Leave that element NULL, which will assert quickly + * inside the tcg generator functions. + */ + R(1), R(2), R(3), R(4), R(5), R(6), R(7), R(8), R(9), R(10), R(11), R(12), R(13), R(14), R(15), R(16), R(17), R(18), R(19), R(20), R(21), R(22), R(23), R(24), R(25), R(26), R(27), R(28), R(29), R(30), R(31),
Do not initialize cpu_R[0], as this should be totally unused. The cpu_for_read and cpu_for_write functions use a local temp. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> --- target/microblaze/translate.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)