Initial support for CPU switching. New SamplingCPU object encompasses a set

of CPUs that get switched round-robin (though currently we're only shooting for
two CPUs and one switch event, and even that doesn't quite work yet).  Registration
of ExecContexts with System/Process object factored out so we can create two CPUs
but only register one of them at a time.  Also worked at making behavior and naming
in System and Process objects more consistent.

arch/alpha/ev5.cc:
    Rename ipr_init to initIPRs and get rid of unused mem arg.
arch/alpha/fake_syscall.cc:
    Process:numCpus is now a function (not a data member).
base/remote_gdb.hh:
    Support for ExecContext switching.
cpu/base_cpu.cc:
cpu/base_cpu.hh:
cpu/exec_context.cc:
cpu/exec_context.hh:
cpu/simple_cpu/simple_cpu.hh:
    Support for ExecContext switching.
    Renamed contexts array to execContexts to be consistent with Process.
    CPU ID now auto-assigned by system object.
cpu/simple_cpu/simple_cpu.cc:
    Support for ExecContext switching.
    Renamed contexts array to execContexts to be consistent with Process.
    CPU ID now auto-assigned by system object.
    Cleaned up MP full-system initialization a bit.
dev/alpha_console.cc:
    Renamed xcvec array to execContexts to be consistent with Process.
kern/tru64/tru64_system.cc:
kern/tru64/tru64_system.hh:
    Support for ExecContext switching.
    CPU ID now auto-assigned by system object.
sim/prog.cc:
sim/prog.hh:
    Support for ExecContext switching.
    Process:numCpus is now a function (not a data member).
sim/system.cc:
sim/system.hh:
    Support for ExecContext switching.
    Renamed xcvec array to execContexts to be consistent with Process.

--HG--
extra : convert_revision : 79649cffad5bf3e83de8df44236941907926d791

1 files changed, 4 insertions, 4 deletions

diff --git a/sim/system.hh b/sim/system.hh
index 56a3d6a6f..1c4440b9a 100644
--- a/sim/system.hh
+++ b/sim/system.hh
@@ -52,16 +52,16 @@ class System : public SimObject
 
     PCEventQueue pcEventQueue;
 
-    std::vector<ExecContext *> xcvec;
-    void registerExecContext(ExecContext *xc);
+    std::vector<ExecContext *> execContexts;
+
+    virtual int registerExecContext(ExecContext *xc);
+    virtual void replaceExecContext(int xcIndex, ExecContext *xc);
 
   public:
     System(const std::string _name, const int _init_param,
            MemoryController *, PhysicalMemory *);
     ~System();
 
-    virtual void init(ExecContext *xc) = 0;
-
     virtual Addr getKernelStart() const = 0;
     virtual Addr getKernelEnd() const = 0;
     virtual Addr getKernelEntry() const = 0;