Chapter 11 Writing Macro Control Statements

11.9 irp

Syntax

irp

dummy_parameter, parameter (, parameter) ...

block

 

endm

 

 

 

 

NOTE:

Up to10 dummy parameters can be specified.

 

 

 

Functional description

The irp directive repeatedly expands the specified block the specified number of times. The dummy parameter is used within the block. The macro expansion replaces the dummy parameter with each parameter in turn, repeated for the number of parameters.

Coding rules

Symbols cannot be used within a block. If used, a double definition error will occur. The local directive cannot be used either.

If a comma (,) delimiters in a row are specified, the corresponding parameter will be processed as though a null character had been specified.

To specify strings that include commas and spaces, use the macro operator <>.

Usage example

In the following example, the irp directive is in a macro definition that is used twice in the program.

init

macro

p1

 

irp

opr, <pl\& 0x0f>

 

mov

opr, D0

 

endm

 

;

endm

 

 

 

_TEXT

section

CODE, PUBLIC, 1

 

init

1

 

irp

reg, D2, D3

 

mov

0, reg

 

endm

 

220 irp

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Panasonic MN1030 user manual 11.9 irp, Irp, Dummyparameter, parameter , parameter, Block