This is the code for the x86-64 assembly file using NASM syntax. ![]() ![]() In Rival Fortress rdtsc is used for timing execution of performance critical code. The GetRDTSC() function returns the Time-Stamp Counter and is implemented in Assembly. You can use this as an test main.cpp: #include Įxtern "C" long long GetRDTSC () int main ( int, const char ** ) I suggest you create a blank “Command Line Tool” project in order to test the integration. Double-check the location of your nasm executable and open Xcode. This will probably install nasm to /usr/local/bin, unless you changed your Homebrew config. Getting the latest NASMįirst I suggest you install the latest version of NASM using Homebrew like so: brew install nasm Xcode needs a bit of massaging in order to support NASM within a C/C++ project. Last time I talked about how to integrate NASM in a CMake/Clang build, but if you are developing on a Mac you may want to use Xcode to debug your assembly code.
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