Anonymous Labels for Jump Instructions (33067)

The information in this article applies to:

Microsoft Macro Assembler (MASM) 5.1
Microsoft Macro Assembler (MASM) 5.1a
Microsoft Macro Assembler (MASM) 6.0
Microsoft Macro Assembler (MASM) 6.0a
Microsoft Macro Assembler (MASM) 6.0b

This article was previously published under Q33067

SUMMARY

The Microsoft Macro Assembler (MASM) 5.1 and later provides a way to generate anonymous labels for jump instructions. To define the local label to be jumped to, use two at signs (@@) followed by a colon (:). The operand used in the jump instruction can be one of the following

   @B (back)
   @F (forward)

The @B will jump to the previous local label and the @F will jump to the next local label.

MORE INFORMATION

The fragment below illustrates this feature:

    cmp ax,cx
    jge @F
    .
    .
    .
@@:
    .
    .
    .
    jle @B

The jump to @F will jump to @@: and the jump to @B will jump back to the @@.

Modification Type:	Major	Last Reviewed:	10/20/2003
Keywords:	KB33067