#define

Defines a preprocessor macro.

  #define 
  name
   [ (
  parms
  ) ] 
  assembly_statement
    

name

Name of the macro.

parms

List of parameters, separated by commas. Parentheses must enclose the list.

assembly_statement

Any valid assembly statement.

To extend an assembly_statement, type a backslash (\) and continue the statement on the next line. In GNU mode, multiple statements can be on one line of code - separate them with semicolon characters (;).