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authorAndreas Sandberg <Andreas.Sandberg@arm.com>2013-01-07 13:05:35 -0500
committerAndreas Sandberg <Andreas.Sandberg@arm.com>2013-01-07 13:05:35 -0500
commit3db3f83a5ea4b9565db1ab6b22d18e2b33ecef98 (patch)
treea736f3746d5c38bdc98d6fb8589113556271d486 /src/arch/x86/isa.cc
parent69d419f31383ac7801e1debb62d5bbf7cb899e3c (diff)
downloadgem5-3db3f83a5ea4b9565db1ab6b22d18e2b33ecef98.tar.xz
arch: Make the ISA class inherit from SimObject
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.
Diffstat (limited to 'src/arch/x86/isa.cc')
-rw-r--r--src/arch/x86/isa.cc19
1 files changed, 19 insertions, 0 deletions
diff --git a/src/arch/x86/isa.cc b/src/arch/x86/isa.cc
index 1a9b39840..9dbab8c7e 100644
--- a/src/arch/x86/isa.cc
+++ b/src/arch/x86/isa.cc
@@ -33,6 +33,7 @@
#include "arch/x86/tlb.hh"
#include "cpu/base.hh"
#include "cpu/thread_context.hh"
+#include "params/X86ISA.hh"
#include "sim/serialize.hh"
namespace X86ISA
@@ -110,6 +111,18 @@ ISA::clear()
regVal[MISCREG_DR7] = 1 << 10;
}
+ISA::ISA(Params *p)
+ : SimObject(p)
+{
+ clear();
+}
+
+const X86ISAParams *
+ISA::params() const
+{
+ return dynamic_cast<const Params *>(_params);
+}
+
MiscReg
ISA::readMiscRegNoEffect(int miscReg)
{
@@ -376,3 +389,9 @@ ISA::unserialize(EventManager *em, Checkpoint * cp,
}
}
+
+X86ISA::ISA *
+X86ISAParams::create()
+{
+ return new X86ISA::ISA(this);
+}