plugbox.cc.svn-base

德国Erlangen大学教学操作系统源码。

/*****************************************************************************/
/* Betriebssysteme                                                           */
/*---------------------------------------------------------------------------*/
/*                                                                           */
/*                              P L U G B O X                                */
/*                                                                           */
/*---------------------------------------------------------------------------*/
/* Abstraktion einer Interruptvektortabelle. Damit kann man die Behandlungs- */
/* routine fuer jeden Hardware-, Softwareinterrupt und jede Prozessor-       */
/* exception festlegen.                                                      */
/*****************************************************************************/

#include "machine/plugbox.h"

#include "device/panic.h"

extern Panic panic;

Plugbox::Plugbox()
{
	for(int i = 0; i < parameter::slots; i++)
		m_gates[i] = &panic;
}

Plugbox::Plugbox(Plugbox &plugbox)
{
	for(int i = 0; i < parameter::slots; i++)
		m_gates[i] = plugbox.m_gates[i];
}

Plugbox::~Plugbox()
{
}

void Plugbox::assign (unsigned int slot, Gate& gate)
{
	if(slot < parameter::slots)
		m_gates[slot] = &gate;
}

Gate& Plugbox::report (unsigned int slot)
{
	return *m_gates[slot & parameter::slot_mask];
}