Name? Local Labels - Texas Instruments TMS320C54x User Manual

Example 3–2. name? Local Labels
;*********************************************************
; First definition of local label 'mylab'
;*********************************************************
nop
mylab? nop
b mylab?
;*********************************************************
; Include file has second definition of 'mylab'
;*********************************************************
.copy "a.inc"
;*********************************************************
;Third definition of 'mylab', reset upon exit from include
;*********************************************************
mylab? nop
b mylab?
;*********************************************************
; Fourth definition of 'mylab' in macro, macros use
; different namespace to avoid conflicts
;*********************************************************
mymac .macro
mylab? nop
b mylab?
.endm
;*********************************************************
; Macro invocation
;*********************************************************
mymac
;*********************************************************
; Reference to third definition of 'mylab', note that
; definition is not reset by macro invocation nor
; conflicts with same name defined in macro
;*********************************************************
b mylab?;
*********************************************************
; Changing section, allowing fifth definition of 'mylab'
;*********************************************************
.sect "Secto_One"
nop
mylab? .word 0
nop
nop
b mylab?
;*********************************************************
;.newblock directive, allowing sixth definition of 'mylab'
;*********************************************************
.newblock
mylab? .word 0
nop
nop
b mylab?
Assembler Description
Symbols
3-23