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authorNathan Binkert <binkertn@umich.edu>2004-11-03 20:46:33 -0500
committerNathan Binkert <binkertn@umich.edu>2004-11-03 20:46:33 -0500
commitd82e0d11d12cdc75ab3c7a51a36630f5bd0c0e11 (patch)
tree64a77bbf08c9bfe7e7d21a8bf3ea5d2ff2a7495c
parent129b885abd30e72c0b3e19787da385af4af6e53e (diff)
downloadgem5-d82e0d11d12cdc75ab3c7a51a36630f5bd0c0e11.tar.xz
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
-rw-r--r--cpu/base_cpu.cc15
-rw-r--r--cpu/base_cpu.hh7
-rw-r--r--cpu/simple_cpu/simple_cpu.cc14
-rw-r--r--cpu/simple_cpu/simple_cpu.hh3
-rw-r--r--sim/system.cc16
-rw-r--r--sim/system.hh2
6 files changed, 30 insertions, 27 deletions
diff --git a/cpu/base_cpu.cc b/cpu/base_cpu.cc
index 8a9c9a102..7fb8b414f 100644
--- a/cpu/base_cpu.cc
+++ b/cpu/base_cpu.cc
@@ -47,21 +47,22 @@ vector<BaseCPU *> BaseCPU::cpuList;
int maxThreadsPerCPU = 1;
#ifdef FULL_SYSTEM
-BaseCPU::BaseCPU(const string &_name, int _number_of_threads,
+BaseCPU::BaseCPU(const string &_name, int _number_of_threads, bool _def_reg,
Counter max_insts_any_thread,
Counter max_insts_all_threads,
Counter max_loads_any_thread,
Counter max_loads_all_threads,
System *_system, Tick freq)
- : SimObject(_name), frequency(freq),
+ : SimObject(_name), frequency(freq), deferRegistration(_def_reg),
number_of_threads(_number_of_threads), system(_system)
#else
-BaseCPU::BaseCPU(const string &_name, int _number_of_threads,
+BaseCPU::BaseCPU(const string &_name, int _number_of_threads, bool _def_reg,
Counter max_insts_any_thread,
Counter max_insts_all_threads,
Counter max_loads_any_thread,
Counter max_loads_all_threads)
- : SimObject(_name), number_of_threads(_number_of_threads)
+ : SimObject(_name), deferRegistration(_def_reg),
+ number_of_threads(_number_of_threads)
#endif
{
// add self to global list of CPUs
@@ -126,6 +127,12 @@ BaseCPU::BaseCPU(const string &_name, int _number_of_threads,
#endif
}
+void
+BaseCPU::init()
+{
+ if (!deferRegistration)
+ registerExecContexts();
+}
void
BaseCPU::regStats()
diff --git a/cpu/base_cpu.hh b/cpu/base_cpu.hh
index f75f00409..7e937c755 100644
--- a/cpu/base_cpu.hh
+++ b/cpu/base_cpu.hh
@@ -91,12 +91,12 @@ class BaseCPU : public SimObject
public:
#ifdef FULL_SYSTEM
- BaseCPU(const std::string &_name, int _number_of_threads,
+ BaseCPU(const std::string &_name, int _number_of_threads, bool _def_reg,
Counter max_insts_any_thread, Counter max_insts_all_threads,
Counter max_loads_any_thread, Counter max_loads_all_threads,
System *_system, Tick freq);
#else
- BaseCPU(const std::string &_name, int _number_of_threads,
+ BaseCPU(const std::string &_name, int _number_of_threads, bool _def_reg,
Counter max_insts_any_thread = 0,
Counter max_insts_all_threads = 0,
Counter max_loads_any_thread = 0,
@@ -105,8 +105,10 @@ class BaseCPU : public SimObject
virtual ~BaseCPU() {}
+ virtual void init();
virtual void regStats();
+ bool deferRegistration;
void registerExecContexts();
/// Prepare for another CPU to take over execution. Called by
@@ -140,7 +142,6 @@ class BaseCPU : public SimObject
#ifdef FULL_SYSTEM
System *system;
-
/**
* Serialize this object to the given output stream.
* @param os The stream to serialize to.
diff --git a/cpu/simple_cpu/simple_cpu.cc b/cpu/simple_cpu/simple_cpu.cc
index 8ea5798ea..6af67eee0 100644
--- a/cpu/simple_cpu/simple_cpu.cc
+++ b/cpu/simple_cpu/simple_cpu.cc
@@ -124,7 +124,7 @@ SimpleCPU::SimpleCPU(const string &_name,
MemInterface *icache_interface,
MemInterface *dcache_interface,
bool _def_reg, Tick freq)
- : BaseCPU(_name, /* number_of_threads */ 1,
+ : BaseCPU(_name, /* number_of_threads */ 1, _def_reg,
max_insts_any_thread, max_insts_all_threads,
max_loads_any_thread, max_loads_all_threads,
_system, freq),
@@ -137,12 +137,11 @@ SimpleCPU::SimpleCPU(const string &_name, Process *_process,
MemInterface *icache_interface,
MemInterface *dcache_interface,
bool _def_reg)
- : BaseCPU(_name, /* number_of_threads */ 1,
+ : BaseCPU(_name, /* number_of_threads */ 1, _def_reg,
max_insts_any_thread, max_insts_all_threads,
max_loads_any_thread, max_loads_all_threads),
#endif
- tickEvent(this), xc(NULL), defer_registration(_def_reg),
- cacheCompletionEvent(this)
+ tickEvent(this), xc(NULL), cacheCompletionEvent(this)
{
_status = Idle;
#ifdef FULL_SYSTEM
@@ -176,13 +175,6 @@ SimpleCPU::~SimpleCPU()
{
}
-void SimpleCPU::init()
-{
- if (!defer_registration) {
- this->registerExecContexts();
- }
-}
-
void
SimpleCPU::switchOut()
{
diff --git a/cpu/simple_cpu/simple_cpu.hh b/cpu/simple_cpu/simple_cpu.hh
index d0000dc5b..1610d6060 100644
--- a/cpu/simple_cpu/simple_cpu.hh
+++ b/cpu/simple_cpu/simple_cpu.hh
@@ -158,7 +158,6 @@ class SimpleCPU : public BaseCPU
#endif
virtual ~SimpleCPU();
- virtual void init();
// execution context
ExecContext *xc;
@@ -178,8 +177,6 @@ class SimpleCPU : public BaseCPU
// L1 data cache
MemInterface *dcacheInterface;
- bool defer_registration;
-
// current instruction
MachInst inst;
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()) {
diff --git a/sim/system.hh b/sim/system.hh
index 5294f417e..61784b044 100644
--- a/sim/system.hh
+++ b/sim/system.hh
@@ -122,6 +122,8 @@ class System : public SimObject
System(Params *p);
~System();
+ void startup();
+
public:
/**
* Returns the addess the kernel starts at.