www.pudn.com > ControlRemote.zip > memblast.c

#include "memblast.h" 
//#include "Server.h" 
//#include "HuffCompress.h" 
#include  
 
// Copy memory range from one location to another 
__inline void memblast(void* dest,void* src,DWORD count) 
{ 
	DWORD	iCount; 
 
	__asm 
	{ 
		// Align Count to a DWORD Boundary 
		MOV		ECX,count 
		SHR		ECX,2 
		SHL		ECX,2 
		MOV		iCount,ECX 
 
		// Copy All the DWORDs (32 bits at a Time) 
		MOV		ESI,src		// Copy the Source Address to the Register 
		MOV		EDI,dest	// Copy the Destination to the Register 
		MOV		ECX,iCount	// Copy the Count to the Register 
		SHR		ECX,2		// Divide Count by 4 for DWORD Copy 
		REP		MOVSD		// Move all the Source DWORDs to the Dest DWORDs 
 
		// Get the Remaining Bytes to Copy 
		MOV		ECX,count 
		MOV		EAX,iCount 
		SUB		ECX,EAX 
 
		// Exit if All Bytes Copied 
		JZ		Exit 
 
		// Copy the Remaining BYTEs (8 bits at a Time) 
		MOV		ESI,src		// Copy the Source Address to the Register 
		ADD		ESI,EAX		// Set the Starting Point of the Copy 
		MOV		EDI,dest	// Copy the Destination to the Register 
		ADD		EDI,EAX		// Set the Destination Point of the Copy 
		REP		MOVSB		// Move all the Source BYTEs to the Dest BYTEs 
		Exit: 
	} 
}