Creating Statement Labels

The name of an inline assembly language statement label must follow these rules:

• A label name cannot be the same as the identifier of any local variables of the function in which the label name appears.
• A label name does not have to start in the first column of the function in which it appears; a label name can be preceded by white space.
• A label name can begin with an "at-sign" character ( @) unless the label immediately follows a local variable declaration.
• A label name must end with a colon character ( : ) unless it begins with an at-sign character ( @ ).

  For example, red: and @red are valid, but red is not valid.

• A label name can be the same as an assembly language statement mnemonic.

  For example, this statement is valid:

  add: add r3, r4, r5 
  

Examples:

asm void func1(){ 
  int i; 
    @x: li r0,1 //Invalid !!! 
  }
  

asm void func2(){ 
  int i; 
    x:  li r0,1 //OK 
    @y: add r3, r4, r5 //OK 
  }
  

This is an example of a complete inline assembly language function:

asm void red(void){ x1: add r3,r4,r5 @x2: add r6,r7,r8 }