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[98.147.7.212]) by smtp.gmail.com with ESMTPSA id u12-20020a170903124c00b001dc05535632sm2589378plh.170.2024.04.05.22.37.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 05 Apr 2024 22:37:38 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: zack@buhman.org, peter.maydell@linaro.org, ysato@users.sourceforge.jp Subject: [PATCH v3 2/4] target/sh4: Merge mach and macl into a union Date: Fri, 5 Apr 2024 19:37:30 -1000 Message-Id: <20240406053732.191398-3-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240406053732.191398-1-richard.henderson@linaro.org> References: <20240406053732.191398-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::635; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x635.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 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: , Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: qemu-devel-bounces+patch=linaro.org@nongnu.org Allow host access to the entire 64-bit accumulator. Signed-off-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daudé --- target/sh4/cpu.h | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/target/sh4/cpu.h b/target/sh4/cpu.h index 9211da6bde..d928bcf006 100644 --- a/target/sh4/cpu.h +++ b/target/sh4/cpu.h @@ -155,12 +155,22 @@ typedef struct CPUArchState { uint32_t pc; /* program counter */ uint32_t delayed_pc; /* target of delayed branch */ uint32_t delayed_cond; /* condition of delayed branch */ - uint32_t mach; /* multiply and accumulate high */ - uint32_t macl; /* multiply and accumulate low */ uint32_t pr; /* procedure register */ uint32_t fpscr; /* floating point status/control register */ uint32_t fpul; /* floating point communication register */ + /* multiply and accumulate: high, low and combined. */ + union { + uint64_t mac; + struct { +#if HOST_BIG_ENDIAN + uint32_t mach, macl; +#else + uint32_t macl, mach; +#endif + }; + }; + /* float point status register */ float_status fp_status;