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single instruction ticks instead of entire milliseconds

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need optimizing
This commit is contained in:
fros4943 2008-04-01 08:08:58 +00:00
parent af2fcbca50
commit bc4c80f7c7
1 changed files with 36 additions and 40 deletions
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76
tools/cooja/apps/mspsim/src/se/sics/cooja/mspmote/MspMote.java
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@ -26,7 +26,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: MspMote.java,v 1.5 2008/03/19 17:23:47 fros4943 Exp $
* $Id: MspMote.java,v 1.6 2008/04/01 08:08:58 fros4943 Exp $
*/
package se.sics.cooja.mspmote;
@ -242,56 +242,52 @@ public abstract class MspMote implements Mote {
*/
protected abstract boolean initEmulator(File ELFFile);
public void tick(int simTime) {
// Let all interfaces act
myMoteInterfaceHandler.doPassiveActionsBeforeTick();
myMoteInterfaceHandler.doActiveActionsBeforeTick();
private int currentSimTime = -1;
public boolean tick(int simTime) {
if (stopNextInstruction) {
stopNextInstruction = false;
throw new RuntimeException("Request simulation stop");
}
stopNextInstruction = false;
if (currentSimTime < 0) {
currentSimTime = simTime;
}
if (currentSimTime != simTime) {
currentSimTime = simTime;
}
long maxSimTimeCycles = NR_CYCLES_PER_MSEC*(simTime+1);
if (maxSimTimeCycles <= cycleCounter) {
return false;
}
// Leave control to emulated CPU
cycleCounter += 1;
MSP430 cpu = getCPU();
cycleCounter += NR_CYCLES_PER_MSEC;
cpu.step(cycleCounter);
/* Check if radio has pending incoming bytes */
if (myRadio != null && myRadio.hasPendingBytes()) {
myRadio.tryDeliverNextByte(cpu.cycles);
}
if (monitorStackUsage) {
// CPU loop with stack observer
int newStack;
while (!stopNextInstruction && cpu.cycles < cycleCounter) {
cpu.step(cycleCounter);
int newStack = cpu.reg[MSP430.SP];
if (newStack < stackPointerLow && newStack > 0) {
stackPointerLow = cpu.reg[MSP430.SP];
/* Check if radio has pending incoming bytes */
if (myRadio != null && myRadio.hasPendingBytes()) {
myRadio.tryDeliverNextByte(cpu.cycles);
}
newStack = cpu.reg[MSP430.SP];
if (newStack < stackPointerLow && newStack > 0) {
stackPointerLow = cpu.reg[MSP430.SP];
// Check if stack is writing in memory
if (stackPointerLow < heapStartAddress) {
stackOverflowObservable.signalStackOverflow();
stopNextInstruction = true;
}
}
}
} else { /* Fast CPU loop */
while (!stopNextInstruction && cpu.cycles < cycleCounter) {
cpu.step(cycleCounter);
/* Check if radio has pending incoming bytes */
if (myRadio != null && myRadio.hasPendingBytes()) {
myRadio.tryDeliverNextByte(cpu.cycles);
// Check if stack is writing in memory
if (stackPointerLow < heapStartAddress) {
stackOverflowObservable.signalStackOverflow();
stopNextInstruction = true;
getSimulation().stopSimulation();
}
}
}
// Reset abort flag
stopNextInstruction = false;
// Let all interfaces act after tick
myMoteInterfaceHandler.doActiveActionsAfterTick();
myMoteInterfaceHandler.doPassiveActionsAfterTick();
return true;
}
public boolean setConfigXML(Simulation simulation, Collection<Element> configXML, boolean visAvailable) {