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3. Preprocessing and Directives
3
Preprocessing and Directives
This section covers preprocessing and directives.
3.1
Text Replacement using #define
Simple text replacement is supported via a C-style #define as follows.
#define SOME_ADDRESS sprm0x41
ram diob <- SOME_ADDRESS.
// This is the same as the following
ram diob <- sprm0x41.
The text replacement can span multiple lines using the continuation character, '\', as
follows.
#define A_ValuE 10 \
+ 2 \
- 3;
3.2
File Inclusion
One file can include another file using the C-style #include directive as follows.
#include "MyHeaderFile.h"
Freescale Syntax
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Assembler Reference Manual, page 19