Symbolic bit references for SFR's

[khaynes]

I want to write:

    IF PIR1.TMR1IF = 1 THEN ; Remember that TMR1IF bit is in PIR1 SFR
        T1CON = 0 ; Stop timer
        PIR1.TMR1IF = 0
        GOSUB DoSomethingUseful
    ENDIF

Instead of:

TMR1FLAG VAR PIR1.0 ; Timer1 overflow flag, (Must remember that TMR1IF is bit 0)
                  ; TMR1IF is defined in M16F87X.INC but that doesn't help me
 
    IF TMR1FLAG = 1 THEN
        T1CON = 0 ; Stop timer
        TMR1FLAG = 0 ; Clear timer flag
        GOSUB DoSomethingUseful
    ENDIF

I would settle for:

TMR1IF CON 0
TMR1FLAG VAR PIR1.TMR1IF
    IF TMR1FLAG = 1 THEN
        T1CON = 0 ; Stop timer
        TMR1FLAG = 0 ; Clear timer flag
        GOSUB DoSomethingUseful
    ENDIF