Arm VERSION 1.2 Manual do Utilizador descarregar pdf (Página 313)

100

101

Directives Reference

Examples

Example 7-3 assembles the first set of instructions if

NEWVERSION

is defined, or the

alternative set otherwise.

Example 7-3 Assembly conditional on a variable being defined

IF :DEF:NEWVERSION

; first set of instructions/directives

ELSE

; alternative set of instructions/directives

ENDIF

Invoking

armasm

as follows defines

NEWVERSION

, so the first set of instructions and

directives are assembled:

armasm -PD "NEWVERSION SETL {TRUE}" test.s

Invoking

armasm

as follows leaves

NEWVERSION

undefined, so the second set of

instructions and directives are assembled:

armasm test.s

Example 7-4 assembles the first set of instructions if

NEWVERSION

has the value

{TRUE}

or the alternative set otherwise.

Example 7-4 Assembly conditional on a variable being defined

IF NEWVERSION = {TRUE}

; first set of instructions/directives

ELSE

; alternative set of instructions/directives

ENDIF

Invoking

armasm

as follows causes the first set of instructions and directives to be

assembled:

armasm -PD "NEWVERSION SETL {TRUE}" test.s

Invoking

armasm

as follows causes the second set of instructions and directives to be

assembled:

armasm -PD "NEWVERSION SETL {FALSE}" test.s

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