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[71.206.142.238]) by smtp.gmail.com with ESMTPSA id r82-20020a37a855000000b0074a0051fcd4sm4939068qke.88.2023.04.12.14.11.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 12 Apr 2023 14:11:22 -0700 (PDT) To: libc-alpha@sourceware.org Cc: Joe Simmons-Talbott Subject: [PATCH v2 0/2] x86_64: aarch64: Set call number just before syscall Date: Wed, 12 Apr 2023 17:11:02 -0400 Message-Id: <20230412211104.2609738-1-josimmon@redhat.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230411133004.2268170-1-josimmon@redhat.com> References: <20230411133004.2268170-1-josimmon@redhat.com> MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-Spam-Status: No, score=-5.9 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2, SPF_HELO_NONE, SPF_NONE, TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Joe Simmons-Talbott via Libc-alpha From: Joe Simmons-Talbott Reply-To: Joe Simmons-Talbott Errors-To: libc-alpha-bounces+patchwork=sourceware.org@sourceware.org Sender: "Libc-alpha" To make binary call tree analysis easier place the syscall number into the register just before the syscall is made. Only do this if the syscall number is a constant integer. Tested on x86_64 and aarch64. Changes to v1: * aarch64: Combine two inline asms into one. Avoid loading name twice. Joe Simmons-Talbott (2): x86_64: Set the syscall register right before doing the syscall. aarch64: Set the syscall register right before doing the syscall. sysdeps/unix/sysv/linux/aarch64/sysdep.h | 20 +++++++++++--- sysdeps/unix/sysv/linux/x86_64/sysdep.h | 33 ++++++++++++++++++++++++ 2 files changed, 50 insertions(+), 3 deletions(-)