branch.cpp

来自「国外开源的一个片上网络系统的源代码」· C++ 代码 · 共 63 行

/*
 *  TU Eindhoven
 *  Eindhoven, The Netherlands
 *
 *  Name            :   branch.cc
 *
 *  Author          :   Sander Stuijk ([e-mail])
 *
 *  Date            :   July 23, 2002
 *
 *  Function        :   Branch controller
 *
 *  History         :
 *      23-07-02    :   Initial version.
 *      13-12-02    :   Synthesizable version [e-mail]
 *
 */
 
#include "branch.h"

void BRANCH_CTRL::branch_ctrl_thread()
{
	sc_uint<W_BRANCHOP> 	branchop;
	sc_uint<W_BRANCHFLAG>	branch;
	sc_uint<1> aluzero;

	//-> while(true) {
		#ifdef VERBOSE
			clog << "BRANCH CTRL" << endl;
		#endif
		
		// Read inputs
		branchop = BranchOp.read();
		aluzero = AluZero.read();
		
		// Compute result
		switch (branchop)
		{
			case 0:	// No branch
					branch = 0;
					break;
			
			case 1:	// Branch on equal
					branch = (aluzero == 1 ? 1:0); 
					break;
					
			case 2:	// Branch on non equal
					branch = (aluzero != 1 ? 1:0); 
					break;
			
			case 3:	// Jump
					branch = 1;
					break;
		}
					
		// Set result on output
		Branch.write(branch);
		
		// Wait for new event
		//-> wait();
//-> 	}
}