SLAU131V October 2004 – February 2020
in_block .macro y,a
. ; visible parameters are y,a and x,z from the calling macro
.endm
out_block .macro x,y,z
. ; visible parameters are x,y,z
.
in_block x,y ; macro call with x and y as arguments
.
.
.endm
out_block ; macro call
Example 16 shows recursive and fact macros. The fact macro produces assembly code necessary to calculate the factorial of n, where n is an immediate value. The result is placed in data memory address loc. The fact macro accomplishes this by calling fact1, which calls itself recursively.