TypedBufferArg<Tru64::tbl_sysinfo> elp(xc->getSyscallArg(2));
const int clk_hz = one_million;
- elp->si_user = curTick / (ticksPerSecond / clk_hz);
+ elp->si_user = curTick / (Clock::Frequency / clk_hz);
elp->si_nice = 0;
elp->si_sys = 0;
elp->si_idle = 0;
m5exit(ExecContext *xc)
{
Tick delay = xc->regs.intRegFile[16];
- Tick when = curTick + NS2Ticks(delay);
+ Tick when = curTick + delay * Clock::Int::ns;
SimExit(when, "m5_exit instruction encountered");
}
Tick delay = xc->regs.intRegFile[16];
Tick period = xc->regs.intRegFile[17];
- Tick when = curTick + NS2Ticks(delay);
- Tick repeat = NS2Ticks(period);
+ Tick when = curTick + delay * Clock::Int::ns;
+ Tick repeat = period * Clock::Int::ns;
using namespace Stats;
SetupEvent(Reset, when, repeat);
Tick delay = xc->regs.intRegFile[16];
Tick period = xc->regs.intRegFile[17];
- Tick when = curTick + NS2Ticks(delay);
- Tick repeat = NS2Ticks(period);
+ Tick when = curTick + delay * Clock::Int::ns;
+ Tick repeat = period * Clock::Int::ns;
using namespace Stats;
SetupEvent(Dump, when, repeat);
Tick delay = xc->regs.intRegFile[16];
Tick period = xc->regs.intRegFile[17];
- Tick when = curTick + NS2Ticks(delay);
- Tick repeat = NS2Ticks(period);
+ Tick when = curTick + delay * Clock::Int::ns;
+ Tick repeat = period * Clock::Int::ns;
using namespace Stats;
SetupEvent(Dump|Reset, when, repeat);
Tick delay = xc->regs.intRegFile[16];
Tick period = xc->regs.intRegFile[17];
- Tick when = curTick + NS2Ticks(delay);
- Tick repeat = NS2Ticks(period);
+ Tick when = curTick + delay * Clock::Int::ns;
+ Tick repeat = period * Clock::Int::ns;
Checkpoint::setup(when, repeat);
}
EtherDump::init()
{
curtime = time(NULL);
- s_freq = ticksPerSecond;
- us_freq = ticksPerSecond / ULL(1000000);
-
struct pcap_file_header hdr;
hdr.magic = TCPDUMP_MAGIC;
hdr.version_major = PCAP_VERSION_MAJOR;
EtherDump::dumpPacket(PacketPtr &packet)
{
pcap_pkthdr pkthdr;
- pkthdr.seconds = curtime + (curTick / s_freq);
- pkthdr.microseconds = (curTick / us_freq) % ULL(1000000);
+ pkthdr.seconds = curtime + (curTick / Clock::Int::s);
+ pkthdr.microseconds = (curTick / Clock::Int::us) % ULL(1000000);
pkthdr.caplen = std::min(packet->length, maxlen);
pkthdr.len = packet->length;
stream.write(reinterpret_cast<char *>(&pkthdr), sizeof(pkthdr));
void init();
Tick curtime;
- Tick s_freq;
- Tick us_freq;
public:
EtherDump(const std::string &name, const std::string &file, int max);
: SimObject(name)
{
double rate = ((double)ticksPerSecond * 8.0) / (double)speed;
- Tick delay = US2Ticks(dly);
+ Tick delay = dly * Clock::Int::us;
link[0] = new Link(name + ".link0", this, 0, rate, delay, dump);
link[1] = new Link(name + ".link1", this, 1, rate, delay, dump);
}
- intrDelay = US2Ticks(p->intr_delay);
+ intrDelay = p->intr_delay * Clock::Int::us;
dmaReadDelay = p->dma_read_delay;
dmaWriteDelay = p->dma_write_delay;
dmaReadFactor = p->dma_read_factor;
//
Base::Base(Params *p)
: PciDev(p), rxEnable(false), txEnable(false),
- intrDelay(US2Ticks(p->intr_delay)),
+ intrDelay(p->intr_delay * Clock::Int::us),
intrTick(0), cpuIntrEnable(false), cpuPendingIntr(false), intrEvent(0),
interface(NULL)
{
TsunamiIO::ClockEvent::ClockEvent()
: Event(&mainEventQueue)
{
+ /* This is the PIT Tick Rate. A constant for the 8254 timer. The
+ * Tsunami platform has one of these cycle counters on the Cypress
+ * South Bridge and it is used by linux for estimating the cycle
+ * frequency of the machine it is running on. --Ali
+ */
+ interval = (Tick)(Clock::Float::s / 1193180.0);
+
DPRINTF(Tsunami, "Clock Event Initilizing\n");
mode = 0;
}
TsunamiIO::ClockEvent::Program(int count)
{
DPRINTF(Tsunami, "Timer set to curTick + %d\n", count);
- // should be count * (cpufreq/pitfreq)
- interval = count * ticksPerSecond/1193180UL;
- schedule(curTick + interval);
+ schedule(curTick + count * interval);
status = 0;
}
}
+/* The linux serial driver (8250.c about line 1182) loops reading from
+ * the device until the device reports it has no more data to
+ * read. After a maximum of 255 iterations the code prints "serial8250
+ * too much work for irq X," and breaks out of the loop. Since the
+ * simulated system is so much slower than the actual system, if a
+ * user is typing on the keyboard it is very easy for them to provide
+ * input at a fast enough rate to not allow the loop to exit and thus
+ * the error to be printed. This magic number provides a delay between
+ * the time the UART receives a character to send to the simulated
+ * system and the time it actually notifies the system it has a
+ * character to send to alleviate this problem. --Ali
+ */
void
Uart::IntrEvent::scheduleIntr()
{
+ static const Tick interval = (Tick)((Clock::Float::s / 2e9) * 450);
DPRINTF(Uart, "Scheduling IER interrupt for %#x, at cycle %lld\n", intrBit,
- curTick + (ticksPerSecond/2000) * 350);
+ curTick + interval);
if (!scheduled())
- /* @todo Make this cleaner, will be much easier with
- * nanosecond time everywhere. Hint hint Nate. */
- schedule(curTick + (ticksPerSecond/2000000000) * 450);
+ schedule(curTick + interval);
else
- reschedule(curTick + (ticksPerSecond/2000000000) * 450);
+ reschedule(curTick + interval);
}
Uart::Uart(const string &name, SimConsole *c, MemoryController *mmu, Addr a,
;
simFreq
- .scalar(ticksPerSecond)
+ .scalar(Clock::Frequency)
.name("sim_freq")
.desc("Frequency of simulated ticks")
;
void
getElapsedTime(T1 &sec, T2 &usec)
{
- int cycles_per_usec = ticksPerSecond / one_million;
-
- int elapsed_usecs = curTick / cycles_per_usec;
+ int elapsed_usecs = curTick / Clock::Int::us;
sec = elapsed_usecs / one_million;
usec = elapsed_usecs % one_million;
}
using namespace std;
Tick curTick = 0;
-Tick ticksPerSecond;
-double __ticksPerMS;
-double __ticksPerUS;
-double __ticksPerNS;
-double __ticksPerPS;
-
bool fullSystem;
ostream *outputStream;
ostream *configStream;
+/// The simulated frequency of curTick. (This is only here for a short time)
+Tick ticksPerSecond;
+
+namespace Clock {
+/// The simulated frequency of curTick. (In ticks per second)
+Tick Frequency;
+
+namespace Float {
+double s;
+double ms;
+double us;
+double ns;
+double ps;
+
+double Hz;
+double kHz;
+double MHz;
+double GHZ;
+/* namespace Float */ }
+
+namespace Int {
+Tick s;
+Tick ms;
+Tick us;
+Tick ns;
+Tick ps;
+/* namespace Float */ }
+
+/* namespace Clock */ }
+
+
// Dummy Object
class Root : public SimObject
{
panic("FULL_SYSTEM not compiled but configuration is full_system");
#endif
- ticksPerSecond = frequency;
- double freq = double(ticksPerSecond);
- __ticksPerMS = freq / 1.0e3;
- __ticksPerUS = freq / 1.0e6;
- __ticksPerNS = freq / 1.0e9;
- __ticksPerPS = freq / 1.0e12;
-
outputStream = simout.find(output_file);
+ Root *root = new Root(getInstanceName());
- return new Root(getInstanceName());
+ ticksPerSecond = frequency;
+
+ using namespace Clock;
+ Frequency = frequency;
+ Float::s = static_cast<double>(Frequency);
+ Float::ms = Float::s / 1.0e3;
+ Float::us = Float::s / 1.0e6;
+ Float::ns = Float::s / 1.0e9;
+ Float::ps = Float::s / 1.0e12;
+
+ Float::Hz = 1.0 / Float::s;
+ Float::kHz = 1.0 / Float::ms;
+ Float::MHz = 1.0 / Float::us;
+ Float::GHZ = 1.0 / Float::ns;
+
+ Int::s = Frequency;
+ Int::ms = Int::s / 1000;
+ Int::us = Int::ms / 1000;
+ Int::ns = Int::us / 1000;
+ Int::ps = Int::ns / 1000;
+
+ return root;
}
REGISTER_SIM_OBJECT("Root", Root)
-
projects / gem5.git / commitdiff