Macros

Introduction

When building PIC, having macros to intrinsic functions is very useful. Intrinsic functions are processed by the compiler itself, and not at runtime. Intrinsic functions will be used instead of CRT-library functions in our case. Microsoft has an Alphabetical listing of intrinsic functions.

Memory Manipulation Macros

#define MemCopy         __movsb  // Replacing memcpy
#define MemSet          __stosb  // Replacing memset
#define MemZero( p, l ) __stosb( ( char* ) ( ( PVOID ) p ), 0, l ) // Replacing ZeroMemory   

2.Type-Casting Macros: These are macros that are used to type-cast input variables.

#define C_PTR( x )      ( PVOID )     ( x )         // Type-cast to PVOID
#define U_PTR( x )      ( ULONG_PTR ) ( x )         // Type-cast to ULONG_PTR