make activation of exec contexts happen in startup

the registration stuff all moves into BaseCPU

cpu/base_cpu.cc:
    Move the registration stuff into the BaseCPU since all
    other CPUs use it.
cpu/base_cpu.hh:
    Move the defer registration stuff into the BaseCPU since all
    other CPUs use it.
cpu/simple_cpu/simple_cpu.cc:
cpu/simple_cpu/simple_cpu.hh:
    registration stuff moved to base class
sim/system.cc:
    the activation of exec contexts should happen at startup, not
    when they are registered.
sim/system.hh:
    the system now has a startup function

--HG--
extra : convert_revision : bb6a7c2da5a1ecf5fe7ede1078200bfe5245f8ef

1 files changed, 10 insertions, 6 deletions

diff --git a/sim/system.cc b/sim/system.cc
index 9fdadf649..1b1a145c6 100644
--- a/sim/system.cc
+++ b/sim/system.cc
@@ -194,12 +194,6 @@ System::registerExecContext(ExecContext *xc)
     int xcIndex = execContexts.size();
     execContexts.push_back(xc);
 
-    if (xcIndex == 0) {
-        // activate with zero delay so that we start ticking right
-        // away on cycle 0
-        xc->activate(0);
-    }
-
     RemoteGDB *rgdb = new RemoteGDB(this, xc);
     GDBListener *gdbl = new GDBListener(rgdb, 7000 + xcIndex);
     gdbl->listen();
@@ -219,6 +213,16 @@ System::registerExecContext(ExecContext *xc)
 }
 
 void
+System::startup()
+{
+    if (!execContexts.empty()) {
+        // activate with zero delay so that we start ticking right
+        // away on cycle 0
+        execContexts[0]->activate(0);
+    }
+}
+
+void
 System::replaceExecContext(ExecContext *xc, int xcIndex)
 {
     if (xcIndex >= execContexts.size()) {