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Thu, 17 Apr 2025 06:10:24 -0700 (PDT) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: Richard Henderson , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Subject: [PATCH 4/8] target/ppc: Evaluate TARGET_BIG_ENDIAN at compile time Date: Thu, 17 Apr 2025 15:10:00 +0200 Message-ID: <20250417131004.47205-5-philmd@linaro.org> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20250417131004.47205-1-philmd@linaro.org> References: <20250417131004.47205-1-philmd@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable 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=2a00:1450:4864:20::42d; envelope-from=philmd@linaro.org; helo=mail-wr1-x42d.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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1744895486630019100 Rather than evaluating TARGET_BIG_ENDIAN at preprocessing time via #ifdef'ry, do it in C at compile time Signed-off-by: Philippe Mathieu-Daud=C3=A9 --- target/ppc/cpu_init.c | 12 ++++++------ target/ppc/mem_helper.c | 6 +----- target/ppc/translate.c | 6 +----- 3 files changed, 8 insertions(+), 16 deletions(-) diff --git a/target/ppc/cpu_init.c b/target/ppc/cpu_init.c index 077991ed535..bbab411a07c 100644 --- a/target/ppc/cpu_init.c +++ b/target/ppc/cpu_init.c @@ -7262,14 +7262,14 @@ static void ppc_cpu_reset_hold(Object *obj, ResetTy= pe type) #if defined(TARGET_PPC64) msr |=3D (target_ulong)1 << MSR_TM; /* Transactional memory */ #endif -#if !TARGET_BIG_ENDIAN - msr |=3D (target_ulong)1 << MSR_LE; /* Little-endian user mode */ - if (!((env->msr_mask >> MSR_LE) & 1)) { - fprintf(stderr, "Selected CPU does not support little-endian.\n"); - exit(1); + if (!TARGET_BIG_ENDIAN) { + msr |=3D (target_ulong)1 << MSR_LE; /* Little-endian user mode */ + if (!((env->msr_mask >> MSR_LE) & 1)) { + fprintf(stderr, "Selected CPU does not support little-endian.\= n"); + exit(1); + } } #endif -#endif =20 #if defined(TARGET_PPC64) if (mmu_is_64bit(env->mmu_model)) { diff --git a/target/ppc/mem_helper.c b/target/ppc/mem_helper.c index d7e8d678f4b..cc3ed29a35b 100644 --- a/target/ppc/mem_helper.c +++ b/target/ppc/mem_helper.c @@ -32,11 +32,7 @@ =20 static inline bool needs_byteswap(const CPUPPCState *env) { -#if TARGET_BIG_ENDIAN - return FIELD_EX64(env->msr, MSR, LE); -#else - return !FIELD_EX64(env->msr, MSR, LE); -#endif + return TARGET_BIG_ENDIAN ^ FIELD_EX64(env->msr, MSR, LE); } =20 /*************************************************************************= ****/ diff --git a/target/ppc/translate.c b/target/ppc/translate.c index 399107d319a..828b850b40e 100644 --- a/target/ppc/translate.c +++ b/target/ppc/translate.c @@ -213,11 +213,7 @@ struct DisasContext { /* Return true iff byteswap is needed in a scalar memop */ static inline bool need_byteswap(const DisasContext *ctx) { -#if TARGET_BIG_ENDIAN - return ctx->le_mode; -#else - return !ctx->le_mode; -#endif + return TARGET_BIG_ENDIAN ^ ctx->le_mode; } =20 /* True when active word size < size of target_long. */ --=20 2.47.1