Get rid of the xc from the alphaAccess/alphaConsole backdoor device.

Now allocate an array of stacks indexed by cpu number which specify
cpu stacks and are initialized by cpu 0. Othe cpus spin waiting for
their stacks before continuing. This change *REQUIRES* a the new
console code to operate correctly.

arch/alpha/ev5.cc:
    Add cpuId to initCPU/initIPR functions
cpu/o3/cpu.cc:
cpu/simple/cpu.cc:
cpu/simple/cpu.hh:
    Move the cpu initilization into an init() function since it now needs
    the CPU id which isn't known at construction
dev/alpha_access.h:
dev/alpha_console.cc:
dev/alpha_console.hh:
    instead of the bootstrap variables, add space for 64 cpu stacks in the
    alpha access structure.
sim/system.cc:
    start all cpus immediately rather than just the first one

--HG--
extra : convert_revision : 28c218af49d885a0f203ada419f16f25d5a3f37b

3 files changed, 17 insertions, 4 deletions

diff --git a/cpu/o3/cpu.cc b/cpu/o3/cpu.cc
index adc7b6bbc..6ea0ed7c7 100644
--- a/cpu/o3/cpu.cc
+++ b/cpu/o3/cpu.cc
@@ -137,8 +137,6 @@ FullO3CPU<Impl>::FullO3CPU(Params &params)
         system->execContexts[i] =
             new ExecContext(this, i, system, itb, dtb, mem);
 
-        // initialize CPU, including PC
-        TheISA::initCPU(&system->execContexts[i]->regs);
         execContexts.push_back(system->execContexts[i]);
 #else
         if (i < params.workload.size()) {
@@ -250,6 +248,7 @@ FullO3CPU<Impl>::init()
         // that it can start properly.
 #if FULL_SYSTEM
         ExecContext *src_xc = system->execContexts[0];
+        TheISA::initCPU(&src_xc->regs, src_xc->cpu_id);
 #else
         ExecContext *src_xc = thread[0];
 #endif
diff --git a/cpu/simple/cpu.cc b/cpu/simple/cpu.cc
index 70217f0bb..2438e49f6 100644
--- a/cpu/simple/cpu.cc
+++ b/cpu/simple/cpu.cc
@@ -84,6 +84,21 @@ SimpleCPU::TickEvent::TickEvent(SimpleCPU *c, int w)
 {
 }
 
+
+void
+SimpleCPU::init()
+{
+    BaseCPU::init();
+#if FULL_SYSTEM
+    for (int i = 0; i < execContexts.size(); ++i) {
+        ExecContext *xc = execContexts[i];
+
+        // initialize CPU, including PC
+        TheISA::initCPU(&xc->regs, xc->cpu_id);
+    }
+#endif
+}
+
 void
 SimpleCPU::TickEvent::process()
 {
@@ -124,8 +139,6 @@ SimpleCPU::SimpleCPU(Params *p)
 #if FULL_SYSTEM
     xc = new ExecContext(this, 0, p->system, p->itb, p->dtb, p->mem);
 
-    // initialize CPU, including PC
-    TheISA::initCPU(&xc->regs);
 #else
     xc = new ExecContext(this, /* thread_num */ 0, p->process, /* asid */ 0);
 #endif // !FULL_SYSTEM
diff --git a/cpu/simple/cpu.hh b/cpu/simple/cpu.hh
index 0f7251237..564749592 100644
--- a/cpu/simple/cpu.hh
+++ b/cpu/simple/cpu.hh
@@ -66,6 +66,7 @@ class SimpleCPU : public BaseCPU
   public:
     // main simulation loop (one cycle)
     void tick();
+    virtual void init();
 
   private:
     struct TickEvent : public Event