The GNU assembler is not intended to be used by humans, but its goal is to assemble the output of compilers. On Linux, the "standard" assembler for humans is "

The GNU assembler is not intended to be used by humans, but its goal is to assemble the output of compilers. On Linux, the "standard" assembler for humans is "nasm", though there are also others. For anyone writing a non-negligible amount of code in an assembly language it is essential to develop or get from elsewhere a comprehensive library of macros, for avoiding to write huge amounts of boilerplate.