avr_bdm.cc

来自「AVR 单片机程序设计用到的模拟器」· CC 代码 · 共 82 行

/* $Id: AVR_BDM.cc,v 1.6 2000/10/01 17:00:42 pure Exp $ */

#include "AVR_BDM.h"

AVR_BDM::AVR_BDM(unsigned _ramsize, unsigned _romsize, unsigned _model,
		 unsigned _mhz) : 
AVR(_ramsize, _romsize, _model, _mhz), 
Thread()
{
	break_signal = running = 0;
	codesize = _romsize / 2;
	bp = new char[codesize];
	arise();
}

AVR_BDM::~AVR_BDM()
{
	delete bp;
}

void AVR_BDM::setbp(int pc)
{
	if ((!running) && (pc >= 0) && (pc < codesize))
	    bp[pc] = 1;
}

void AVR_BDM::clearbp(int pc)
{
	if (!running) {
		if ((pc >= 0) && (pc < codesize))
	    		bp[pc] = 0;
		if (pc == -1)
		    	for (int n = 0; n < codesize; n++)
				bp[n] = 0;
	}
}

void AVR_BDM::singlestep()
{
	if (!running)
	    execute();
}

void AVR_BDM::run()
{
	break_signal = 0;
	running = 1;
	sem_run.signal();
}

void AVR_BDM::stop()
{
	if (running) {
	        break_signal = 1;
		sem_stopped.wait();
		running = 0;
	}
}

void AVR_BDM::action()
{
	while(1) {
		sem_run.wait();
		while (!break_signal) {
		    	execute();
		}
		sem_stopped.signal();
	}
}

void AVR_BDM::load(const char* name)
{
	FILE* fp = fopen(name, "r");
	if (!fp) return;
	int addr = 0;
	int c;
	while ((c = fgetc(fp)) != -1) {
		ROM.writeb(addr++, c);
	}
	fclose(fp);
}