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[83.57.170.65]) by smtp.gmail.com with ESMTPSA id s80sm38921wme.41.2020.09.17.09.31.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 17 Sep 2020 09:31:22 -0700 (PDT) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Subject: [PATCH 3/4] qemu/bswap: Add const_le64() and const_be64() Date: Thu, 17 Sep 2020 18:31:05 +0200 Message-Id: <20200917163106.49351-4-philmd@redhat.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200917163106.49351-1-philmd@redhat.com> References: <20200917163106.49351-1-philmd@redhat.com> MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=philmd@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=UTF-8; text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=205.139.110.120; envelope-from=philmd@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/17 09:24:35 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -50 X-Spam_score: -5.1 X-Spam_bar: ----- X-Spam_report: (-5.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-2.997, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, 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: Peter Maydell , Richard Henderson , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Philippe Mathieu-Daudé We already have the const_endian() macros for 16-bit and 32-bit values. Implement the 64-bit equivalent macros. Signed-off-by: Philippe Mathieu-Daudé --- include/qemu/bswap.h | 22 +++++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) diff --git a/include/qemu/bswap.h b/include/qemu/bswap.h index 6885984e00c..de256cea3ab 100644 --- a/include/qemu/bswap.h +++ b/include/qemu/bswap.h @@ -83,11 +83,20 @@ static inline void bswap64s(uint64_t *s) #endif /* - * Same as cpu_to_{be,le}{16,32} described below, except that gcc will + * Same as cpu_to_{be,le}{16,32,64} described below, except that gcc will * figure the result is a compile-time constant if you pass in a constant. * So this can be used to initialize static variables. */ #if defined(HOST_WORDS_BIGENDIAN) +# define const_le64(_x) \ + ((((_x) & 0x00000000000000ffU) << 56) | \ + (((_x) & 0x000000000000ff00U) << 40) | \ + (((_x) & 0x0000000000ff0000U) << 24) | \ + (((_x) & 0x00000000ff000000U) << 8) | \ + (((_x) & 0x000000ff00000000U) >> 8) | \ + (((_x) & 0x0000ff0000000000U) >> 24) | \ + (((_x) & 0x00ff000000000000U) >> 40) | \ + (((_x) & 0xff00000000000000U) >> 56)) # define const_le32(_x) \ ((((_x) & 0x000000ffU) << 24) | \ (((_x) & 0x0000ff00U) << 8) | \ @@ -96,11 +105,22 @@ static inline void bswap64s(uint64_t *s) # define const_le16(_x) \ ((((_x) & 0x00ff) << 8) | \ (((_x) & 0xff00) >> 8)) +# define const_be64(_x) (_x) # define const_be32(_x) (_x) # define const_be16(_x) (_x) #else +# define const_le64(_x) (_x) # define const_le32(_x) (_x) # define const_le16(_x) (_x) +# define const_be64(_x) \ + ((((_x) & 0x00000000000000ffU) << 56) | \ + (((_x) & 0x000000000000ff00U) << 40) | \ + (((_x) & 0x0000000000ff0000U) << 24) | \ + (((_x) & 0x00000000ff000000U) << 8) | \ + (((_x) & 0x000000ff00000000U) >> 8) | \ + (((_x) & 0x0000ff0000000000U) >> 24) | \ + (((_x) & 0x00ff000000000000U) >> 40) | \ + (((_x) & 0xff00000000000000U) >> 56)) # define const_be32(_x) \ ((((_x) & 0x000000ffU) << 24) | \ (((_x) & 0x0000ff00U) << 8) | \ -- 2.26.2