ARM: Implement WFE/WFI/SEV semantics.

[gem5.git] / src / sim / core.cc

diff --git a/src/sim/core.cc b/src/sim/core.cc
index 24cc33da2172c146c55858d9630764a6f38dd5cd..ab75e1d9a1783de9d14f197bb53200f3a648b854 100644 (file)
--- a/src/sim/core.cc
+++ b/src/sim/core.cc
@@ -34,9 +34,63 @@
 
 #include "base/callback.hh"
 #include "base/output.hh"
+#include "sim/core.hh"
 
 using namespace std;
 
+Tick _curTick = 0;
+
+namespace SimClock {
+/// 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 SimClock
+
+void
+setClockFrequency(Tick ticksPerSecond)
+{
+    using namespace SimClock;
+    Frequency = ticksPerSecond;
+    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;
+
+}
+
 void
 setOutputDir(const string &dir)
 {
@@ -74,3 +128,4 @@ doExitCleanup()
 
     cout.flush();
 }
+