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arch: Make the ISA class inherit from SimObject

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The ISA class on stores the contents of ID registers on many
architectures. In order to make reset values of such registers
configurable, we make the class inherit from SimObject, which allows
us to use the normal generated parameter headers.

This patch introduces a Python helper method, BaseCPU.createThreads(),
which creates a set of ISAs for each of the threads in an SMT
system. Although it is currently only needed when creating
multi-threaded CPUs, it should always be called before instantiating
the system as this is an obvious place to configure ID registers
identifying a thread/CPU.
This commit is contained in:
Andreas Sandberg
2013-01-07 13:05:35 -05:00
parent 69d419f313
commit 3db3f83a5e
46 changed files with 611 additions and 98 deletions
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17
src/cpu/simple_thread.cc
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@@ -61,9 +61,9 @@ using namespace std;
// constructor
SimpleThread::SimpleThread(BaseCPU *_cpu, int _thread_num, System *_sys,
Process *_process, TheISA::TLB *_itb,
TheISA::TLB *_dtb)
: ThreadState(_cpu, _thread_num, _process), system(_sys), itb(_itb),
dtb(_dtb)
TheISA::TLB *_dtb, TheISA::ISA *_isa)
: ThreadState(_cpu, _thread_num, _process), isa(_isa), system(_sys),
itb(_itb), dtb(_dtb)
{
clearArchRegs();
tc = new ProxyThreadContext<SimpleThread>(this);
@@ -71,8 +71,9 @@ SimpleThread::SimpleThread(BaseCPU *_cpu, int _thread_num, System *_sys,
SimpleThread::SimpleThread(BaseCPU *_cpu, int _thread_num, System *_sys,
TheISA::TLB *_itb, TheISA::TLB *_dtb,
bool use_kernel_stats)
: ThreadState(_cpu, _thread_num, NULL), system(_sys), itb(_itb), dtb(_dtb)
TheISA::ISA *_isa, bool use_kernel_stats)
: ThreadState(_cpu, _thread_num, NULL), isa(_isa), system(_sys), itb(_itb),
dtb(_dtb)
{
tc = new ProxyThreadContext<SimpleThread>(this);
@@ -99,7 +100,7 @@ SimpleThread::SimpleThread(BaseCPU *_cpu, int _thread_num, System *_sys,
}
SimpleThread::SimpleThread()
: ThreadState(NULL, -1, NULL)
: ThreadState(NULL, -1, NULL), isa(NULL)
{
tc = new ProxyThreadContext<SimpleThread>(this);
}
@@ -182,7 +183,7 @@ SimpleThread::serialize(ostream &os)
//
// Now must serialize all the ISA dependent state
//
isa.serialize(baseCpu, os);
isa->serialize(baseCpu, os);
}
@@ -198,7 +199,7 @@ SimpleThread::unserialize(Checkpoint *cp, const std::string &section)
//
// Now must unserialize all the ISA dependent state
//
isa.unserialize(baseCpu, cp, section);
isa->unserialize(baseCpu, cp, section);
}
void