Make FullCPU schedule its TickEvent when one of its contexts becomes active.

This fixes detailed-mpboot, which was broken as of my last change.
Also clean up some of the ExecContext status initialization.

cpu/base_cpu.hh:
    CPU::execCtxStatusChg() now takes thread_num as an arg so the CPU knows
    which execContext had the status change.
    BaseCPU::registerExecContexts() no longer needs to be virtual.
cpu/exec_context.cc:
    Initialize _status directly... don't use setStatus() as this will notify the CPU
    of the change before it is ready.
    CPU::execCtxStatusChg() now takes thread_num as an arg so the CPU knows
    which execContext had the status change.
cpu/exec_context.hh:
    Don't need initStatus() any more.
cpu/simple_cpu/simple_cpu.cc:
    Move execCtxStatusChg() from header to .cc file.
    No longer need specialized version of registerExecContexts to schedule TickEvent.
cpu/simple_cpu/simple_cpu.hh:
    Move execCtxStatusChg() from header to .cc file.
    CPU::execCtxStatusChg() now takes thread_num as arg (must be 0 for SimpleCPU).
    No longer need specialized version of registerExecContexts to schedule TickEvent.
kern/tru64/tru64_system.cc:
    Don't need initRegs; the PC etc. get initialized in the CPU constructor.
    ExecContexts start out as Unallocated, so no need to set them to Unallocated here.
kern/tru64/tru64_system.hh:
    Don't need initRegs; the PC etc. get initialized in the CPU constructor.
sim/prog.cc:
    ExecContexts start out as Unallocated, so no need to set them to Unallocated here.

--HG--
extra : convert_revision : e960ebbeb845960344633798e251b6c8bf1c0378

1 files changed, 6 insertions, 8 deletions

diff --git a/cpu/exec_context.cc b/cpu/exec_context.cc
index 6c24500cc..a4670f291 100644
--- a/cpu/exec_context.cc
+++ b/cpu/exec_context.cc
@@ -44,24 +44,22 @@ using namespace std;
 ExecContext::ExecContext(BaseCPU *_cpu, int _thread_num, System *_sys,
                          AlphaItb *_itb, AlphaDtb *_dtb,
                          FunctionalMemory *_mem)
-    : kernelStats(this, _cpu), cpu(_cpu), thread_num(_thread_num),
+    : _status(ExecContext::Unallocated),
+      kernelStats(this, _cpu), cpu(_cpu), thread_num(_thread_num),
       cpu_id(-1), mem(_mem), itb(_itb), dtb(_dtb), system(_sys),
       memCtrl(_sys->memCtrl), physmem(_sys->physmem),
       func_exe_insn(0), storeCondFailures(0)
 {
     memset(&regs, 0, sizeof(RegFile));
-    setStatus(ExecContext::Unallocated);
 }
 #else
 ExecContext::ExecContext(BaseCPU *_cpu, int _thread_num,
                          Process *_process, int _asid)
-    : cpu(_cpu), thread_num(_thread_num), cpu_id(-1),
-      process(_process), asid (_asid),
+    : _status(ExecContext::Unallocated),
+      cpu(_cpu), thread_num(_thread_num), cpu_id(-1),
+      process(_process), mem(process->getMemory()), asid(_asid),
       func_exe_insn(0), storeCondFailures(0)
 {
-    setStatus(ExecContext::Unallocated);
-
-    mem = process->getMemory();
 }
 
 ExecContext::ExecContext(BaseCPU *_cpu, int _thread_num,
@@ -114,7 +112,7 @@ ExecContext::setStatus(Status new_status)
 #endif
 
     _status = new_status;
-    cpu->execCtxStatusChg();
+    cpu->execCtxStatusChg(thread_num);
 }
 
 void