Using Local Variables and Arguments

To refer to a memory location, you can use the name of a local variable or argument.

The rule for assigning arguments to registers or memory depends on whether the function has a stack frame.

If function has a stack frame, the inline assembler assigns:

scalar arguments declared as register to general purpose registers r14 to r31
floating-point arguments declared as register to floating point fp14 to fp31
other arguments to memory locations

If a function has no stack frame, the inline assembler assigns arguments that are declared register and kept in registers. If you have variable or non-register arguments, the compiler will warn you that you should use frfree

Note: Some op-codes require registers, and others require objects. For example, if you use nofralloc with function arguments, you may run into difficulties.