Change ExecContext to ThreadContext. This is being renamed to differentiate between the interface used objects outside of the CPU, and the interface used by the ISA. ThreadContext is used by objects outside of the CPU and is specifically defined in thread_context.hh. ExecContext is more implicit, and is defined by files such as base_dyn_inst.hh or cpu/simple/base.hh.

Further renames/reorganization will be coming shortly; what is currently CPUExecContext (the old ExecContext from m5) will be renamed to SimpleThread or something similar.

src/arch/alpha/arguments.cc:
src/arch/alpha/arguments.hh:
src/arch/alpha/ev5.cc:
src/arch/alpha/faults.cc:
src/arch/alpha/faults.hh:
src/arch/alpha/freebsd/system.cc:
src/arch/alpha/freebsd/system.hh:
src/arch/alpha/isa/branch.isa:
src/arch/alpha/isa/decoder.isa:
src/arch/alpha/isa/main.isa:
src/arch/alpha/linux/process.cc:
src/arch/alpha/linux/system.cc:
src/arch/alpha/linux/system.hh:
src/arch/alpha/linux/threadinfo.hh:
src/arch/alpha/process.cc:
src/arch/alpha/regfile.hh:
src/arch/alpha/stacktrace.cc:
src/arch/alpha/stacktrace.hh:
src/arch/alpha/tlb.cc:
src/arch/alpha/tlb.hh:
src/arch/alpha/tru64/process.cc:
src/arch/alpha/tru64/system.cc:
src/arch/alpha/tru64/system.hh:
src/arch/alpha/utility.hh:
src/arch/alpha/vtophys.cc:
src/arch/alpha/vtophys.hh:
src/arch/mips/faults.cc:
src/arch/mips/faults.hh:
src/arch/mips/isa_traits.cc:
src/arch/mips/isa_traits.hh:
src/arch/mips/linux/process.cc:
src/arch/mips/process.cc:
src/arch/mips/regfile/float_regfile.hh:
src/arch/mips/regfile/int_regfile.hh:
src/arch/mips/regfile/misc_regfile.hh:
src/arch/mips/regfile/regfile.hh:
src/arch/mips/stacktrace.hh:
src/arch/sparc/faults.cc:
src/arch/sparc/faults.hh:
src/arch/sparc/isa_traits.hh:
src/arch/sparc/linux/process.cc:
src/arch/sparc/linux/process.hh:
src/arch/sparc/process.cc:
src/arch/sparc/regfile.hh:
src/arch/sparc/solaris/process.cc:
src/arch/sparc/stacktrace.hh:
src/arch/sparc/ua2005.cc:
src/arch/sparc/utility.hh:
src/arch/sparc/vtophys.cc:
src/arch/sparc/vtophys.hh:
src/base/remote_gdb.cc:
src/base/remote_gdb.hh:
src/cpu/base.cc:
src/cpu/base.hh:
src/cpu/base_dyn_inst.hh:
src/cpu/checker/cpu.cc:
src/cpu/checker/cpu.hh:
src/cpu/checker/exec_context.hh:
src/cpu/cpu_exec_context.cc:
src/cpu/cpu_exec_context.hh:
src/cpu/cpuevent.cc:
src/cpu/cpuevent.hh:
src/cpu/exetrace.hh:
src/cpu/intr_control.cc:
src/cpu/memtest/memtest.hh:
src/cpu/o3/alpha_cpu.hh:
src/cpu/o3/alpha_cpu_impl.hh:
src/cpu/o3/alpha_dyn_inst_impl.hh:
src/cpu/o3/commit.hh:
src/cpu/o3/commit_impl.hh:
src/cpu/o3/cpu.cc:
src/cpu/o3/cpu.hh:
src/cpu/o3/fetch_impl.hh:
src/cpu/o3/regfile.hh:
src/cpu/o3/thread_state.hh:
src/cpu/ozone/back_end.hh:
src/cpu/ozone/cpu.hh:
src/cpu/ozone/cpu_impl.hh:
src/cpu/ozone/front_end.hh:
src/cpu/ozone/front_end_impl.hh:
src/cpu/ozone/inorder_back_end.hh:
src/cpu/ozone/lw_back_end.hh:
src/cpu/ozone/lw_back_end_impl.hh:
src/cpu/ozone/lw_lsq.hh:
src/cpu/ozone/lw_lsq_impl.hh:
src/cpu/ozone/thread_state.hh:
src/cpu/pc_event.cc:
src/cpu/pc_event.hh:
src/cpu/profile.cc:
src/cpu/profile.hh:
src/cpu/quiesce_event.cc:
src/cpu/quiesce_event.hh:
src/cpu/simple/atomic.cc:
src/cpu/simple/base.cc:
src/cpu/simple/base.hh:
src/cpu/simple/timing.cc:
src/cpu/static_inst.cc:
src/cpu/static_inst.hh:
src/cpu/thread_state.hh:
src/dev/alpha_console.cc:
src/dev/ns_gige.cc:
src/dev/sinic.cc:
src/dev/tsunami_cchip.cc:
src/kern/kernel_stats.cc:
src/kern/kernel_stats.hh:
src/kern/linux/events.cc:
src/kern/linux/events.hh:
src/kern/system_events.cc:
src/kern/system_events.hh:
src/kern/tru64/dump_mbuf.cc:
src/kern/tru64/tru64.hh:
src/kern/tru64/tru64_events.cc:
src/kern/tru64/tru64_events.hh:
src/mem/vport.cc:
src/mem/vport.hh:
src/sim/faults.cc:
src/sim/faults.hh:
src/sim/process.cc:
src/sim/process.hh:
src/sim/pseudo_inst.cc:
src/sim/pseudo_inst.hh:
src/sim/syscall_emul.cc:
src/sim/syscall_emul.hh:
src/sim/system.cc:
src/cpu/thread_context.hh:
src/sim/system.hh:
src/sim/vptr.hh:
    Change ExecContext to ThreadContext.

--HG--
rename : src/cpu/exec_context.hh => src/cpu/thread_context.hh
extra : convert_revision : 108bb97d15a114a565a2a6a23faa554f4e2fd77e

50 files changed, 467 insertions, 467 deletions

diff --git a/src/arch/alpha/arguments.cc b/src/arch/alpha/arguments.cc
index f19ed7ff7..9f9002003 100644
--- a/src/arch/alpha/arguments.cc
+++ b/src/arch/alpha/arguments.cc
@@ -30,7 +30,7 @@
 
 #include "arch/alpha/arguments.hh"
 #include "arch/alpha/vtophys.hh"
-#include "cpu/exec_context.hh"
+#include "cpu/thread_context.hh"
 #include "mem/vport.hh"
 
 using namespace AlphaISA;
@@ -56,14 +56,14 @@ AlphaArguments::getArg(bool fp)
 {
     if (number < 6) {
         if (fp)
-            return xc->readFloatRegBits(16 + number);
+            return tc->readFloatRegBits(16 + number);
         else
-            return xc->readIntReg(16 + number);
+            return tc->readIntReg(16 + number);
     } else {
-        Addr sp = xc->readIntReg(30);
-        VirtualPort *vp = xc->getVirtPort(xc);
+        Addr sp = tc->readIntReg(30);
+        VirtualPort *vp = tc->getVirtPort(tc);
         uint64_t arg = vp->read<uint64_t>(sp + (number-6) * sizeof(uint64_t));
-        xc->delVirtPort(vp);
+        tc->delVirtPort(vp);
         return arg;
     }
 }
diff --git a/src/arch/alpha/arguments.hh b/src/arch/alpha/arguments.hh
index 11a67f3d4..d977d48d6 100644
--- a/src/arch/alpha/arguments.hh
+++ b/src/arch/alpha/arguments.hh
@@ -37,14 +37,14 @@
 #include "base/refcnt.hh"
 #include "sim/host.hh"
 
-class ExecContext;
+class ThreadContext;
 
 namespace AlphaISA {
 
 class AlphaArguments
 {
   protected:
-    ExecContext *xc;
+    ThreadContext *tc;
     int number;
     uint64_t getArg(bool fp = false);
 
@@ -65,17 +65,17 @@ class AlphaArguments
     RefCountingPtr<Data> data;
 
   public:
-    AlphaArguments(ExecContext *ctx, int n = 0)
-        : xc(ctx), number(n), data(NULL)
+    AlphaArguments(ThreadContext *ctx, int n = 0)
+        : tc(ctx), number(n), data(NULL)
         { assert(number >= 0); data = new Data;}
     AlphaArguments(const AlphaArguments &args)
-        : xc(args.xc), number(args.number), data(args.data) {}
+        : tc(args.tc), number(args.number), data(args.data) {}
     ~AlphaArguments() {}
 
-    ExecContext *getExecContext() const { return xc; }
+    ThreadContext *getThreadContext() const { return tc; }
 
     const AlphaArguments &operator=(const AlphaArguments &args) {
-        xc = args.xc;
+        tc = args.tc;
         number = args.number;
         data = args.data;
         return *this;
@@ -120,7 +120,7 @@ class AlphaArguments
     }
 
     AlphaArguments operator[](int index) {
-        return AlphaArguments(xc, index);
+        return AlphaArguments(tc, index);
     }
 
     template <class T>
@@ -133,13 +133,13 @@ class AlphaArguments
     template <class T>
     operator T *() {
         T *buf = (T *)data->alloc(sizeof(T));
-        CopyData(xc, buf, getArg(), sizeof(T));
+        CopyData(tc, buf, getArg(), sizeof(T));
         return buf;
     }
 
     operator char *() {
         char *buf = data->alloc(2048);
-        CopyStringOut(xc, buf, getArg(), 2048);
+        CopyStringOut(tc, buf, getArg(), 2048);
         return buf;
     }
 };
diff --git a/src/arch/alpha/ev5.cc b/src/arch/alpha/ev5.cc
index 5be185002..50ce6b78a 100644
--- a/src/arch/alpha/ev5.cc
+++ b/src/arch/alpha/ev5.cc
@@ -38,7 +38,7 @@
 #include "config/full_system.hh"
 #include "cpu/base.hh"
 #include "cpu/cpu_exec_context.hh"
-#include "cpu/exec_context.hh"
+#include "cpu/thread_context.hh"
 #include "kern/kernel_stats.hh"
 #include "sim/debug.hh"
 #include "sim/sim_events.hh"
@@ -52,15 +52,15 @@ using namespace EV5;
 //  Machine dependent functions
 //
 void
-AlphaISA::initCPU(ExecContext *xc, int cpuId)
+AlphaISA::initCPU(ThreadContext *tc, int cpuId)
 {
-    initIPRs(xc, cpuId);
+    initIPRs(tc, cpuId);
 
-    xc->setIntReg(16, cpuId);
-    xc->setIntReg(0, cpuId);
+    tc->setIntReg(16, cpuId);
+    tc->setIntReg(0, cpuId);
 
-    xc->setPC(xc->readMiscReg(IPR_PAL_BASE) + (new ResetFault)->vect());
-    xc->setNextPC(xc->readPC() + sizeof(MachInst));
+    tc->setPC(tc->readMiscReg(IPR_PAL_BASE) + (new ResetFault)->vect());
+    tc->setNextPC(tc->readPC() + sizeof(MachInst));
 }
 
 ////////////////////////////////////////////////////////////////////////
@@ -68,15 +68,15 @@ AlphaISA::initCPU(ExecContext *xc, int cpuId)
 //
 //
 void
-AlphaISA::initIPRs(ExecContext *xc, int cpuId)
+AlphaISA::initIPRs(ThreadContext *tc, int cpuId)
 {
     for (int i = 0; i < NumInternalProcRegs; ++i) {
-        xc->setMiscReg(i, 0);
+        tc->setMiscReg(i, 0);
     }
 
-    xc->setMiscReg(IPR_PAL_BASE, PalBase);
-    xc->setMiscReg(IPR_MCSR, 0x6);
-    xc->setMiscReg(IPR_PALtemp16, cpuId);
+    tc->setMiscReg(IPR_PAL_BASE, PalBase);
+    tc->setMiscReg(IPR_MCSR, 0x6);
+    tc->setMiscReg(IPR_PALtemp16, cpuId);
 }
 
 
@@ -171,7 +171,7 @@ AlphaISA::MiscRegFile::getDataAsid()
 }
 
 AlphaISA::MiscReg
-AlphaISA::MiscRegFile::readIpr(int idx, Fault &fault, ExecContext *xc)
+AlphaISA::MiscRegFile::readIpr(int idx, Fault &fault, ThreadContext *tc)
 {
     uint64_t retval = 0;	// return value, default 0
 
@@ -225,7 +225,7 @@ AlphaISA::MiscRegFile::readIpr(int idx, Fault &fault, ExecContext *xc)
 
       case AlphaISA::IPR_CC:
         retval |= ipr[idx] & ULL(0xffffffff00000000);
-        retval |= xc->getCpuPtr()->curCycle()  & ULL(0x00000000ffffffff);
+        retval |= tc->getCpuPtr()->curCycle()  & ULL(0x00000000ffffffff);
         break;
 
       case AlphaISA::IPR_VA:
@@ -242,7 +242,7 @@ AlphaISA::MiscRegFile::readIpr(int idx, Fault &fault, ExecContext *xc)
 
       case AlphaISA::IPR_DTB_PTE:
         {
-            AlphaISA::PTE &pte = xc->getDTBPtr()->index(!xc->misspeculating());
+            AlphaISA::PTE &pte = tc->getDTBPtr()->index(!tc->misspeculating());
 
             retval |= ((u_int64_t)pte.ppn & ULL(0x7ffffff)) << 32;
             retval |= ((u_int64_t)pte.xre & ULL(0xf)) << 8;
@@ -282,11 +282,11 @@ int break_ipl = -1;
 #endif
 
 Fault
-AlphaISA::MiscRegFile::setIpr(int idx, uint64_t val, ExecContext *xc)
+AlphaISA::MiscRegFile::setIpr(int idx, uint64_t val, ThreadContext *tc)
 {
     uint64_t old;
 
-    if (xc->misspeculating())
+    if (tc->misspeculating())
         return NoFault;
 
     switch (idx) {
@@ -339,8 +339,8 @@ AlphaISA::MiscRegFile::setIpr(int idx, uint64_t val, ExecContext *xc)
         // write entire quad w/ no side-effect
         old = ipr[idx];
         ipr[idx] = val;
-        if (xc->getKernelStats())
-            xc->getKernelStats()->context(old, val, xc);
+        if (tc->getKernelStats())
+            tc->getKernelStats()->context(old, val, tc);
         break;
 
       case AlphaISA::IPR_DTB_PTE:
@@ -367,17 +367,17 @@ AlphaISA::MiscRegFile::setIpr(int idx, uint64_t val, ExecContext *xc)
 
         // only write least significant five bits - interrupt level
         ipr[idx] = val & 0x1f;
-        if (xc->getKernelStats())
-            xc->getKernelStats()->swpipl(ipr[idx]);
+        if (tc->getKernelStats())
+            tc->getKernelStats()->swpipl(ipr[idx]);
         break;
 
       case AlphaISA::IPR_DTB_CM:
         if (val & 0x18) {
-            if (xc->getKernelStats())
-                xc->getKernelStats()->mode(Kernel::user, xc);
+            if (tc->getKernelStats())
+                tc->getKernelStats()->mode(Kernel::user, tc);
         } else {
-            if (xc->getKernelStats())
-                xc->getKernelStats()->mode(Kernel::kernel, xc);
+            if (tc->getKernelStats())
+                tc->getKernelStats()->mode(Kernel::kernel, tc);
         }
 
       case AlphaISA::IPR_ICM:
@@ -452,21 +452,21 @@ AlphaISA::MiscRegFile::setIpr(int idx, uint64_t val, ExecContext *xc)
         // really a control write
         ipr[idx] = 0;
 
-        xc->getDTBPtr()->flushAll();
+        tc->getDTBPtr()->flushAll();
         break;
 
       case AlphaISA::IPR_DTB_IAP:
         // really a control write
         ipr[idx] = 0;
 
-        xc->getDTBPtr()->flushProcesses();
+        tc->getDTBPtr()->flushProcesses();
         break;
 
       case AlphaISA::IPR_DTB_IS:
         // really a control write
         ipr[idx] = val;
 
-        xc->getDTBPtr()->flushAddr(val,
+        tc->getDTBPtr()->flushAddr(val,
                                    DTB_ASN_ASN(ipr[AlphaISA::IPR_DTB_ASN]));
         break;
 
@@ -490,7 +490,7 @@ AlphaISA::MiscRegFile::setIpr(int idx, uint64_t val, ExecContext *xc)
           pte.asn = DTB_ASN_ASN(ipr[AlphaISA::IPR_DTB_ASN]);
 
           // insert new TAG/PTE value into data TLB
-          xc->getDTBPtr()->insert(val, pte);
+          tc->getDTBPtr()->insert(val, pte);
       }
         break;
 
@@ -514,7 +514,7 @@ AlphaISA::MiscRegFile::setIpr(int idx, uint64_t val, ExecContext *xc)
           pte.asn = ITB_ASN_ASN(ipr[AlphaISA::IPR_ITB_ASN]);
 
           // insert new TAG/PTE value into data TLB
-          xc->getITBPtr()->insert(ipr[AlphaISA::IPR_ITB_TAG], pte);
+          tc->getITBPtr()->insert(ipr[AlphaISA::IPR_ITB_TAG], pte);
       }
         break;
 
@@ -522,21 +522,21 @@ AlphaISA::MiscRegFile::setIpr(int idx, uint64_t val, ExecContext *xc)
         // really a control write
         ipr[idx] = 0;
 
-        xc->getITBPtr()->flushAll();
+        tc->getITBPtr()->flushAll();
         break;
 
       case AlphaISA::IPR_ITB_IAP:
         // really a control write
         ipr[idx] = 0;
 
-        xc->getITBPtr()->flushProcesses();
+        tc->getITBPtr()->flushProcesses();
         break;
 
       case AlphaISA::IPR_ITB_IS:
         // really a control write
         ipr[idx] = val;
 
-        xc->getITBPtr()->flushAddr(val,
+        tc->getITBPtr()->flushAddr(val,
                                    ITB_ASN_ASN(ipr[AlphaISA::IPR_ITB_ASN]));
         break;
 
@@ -550,7 +550,7 @@ AlphaISA::MiscRegFile::setIpr(int idx, uint64_t val, ExecContext *xc)
 }
 
 void
-AlphaISA::copyIprs(ExecContext *src, ExecContext *dest)
+AlphaISA::copyIprs(ThreadContext *src, ThreadContext *dest)
 {
     for (int i = IPR_Base_DepTag; i < NumInternalProcRegs; ++i) {
         dest->setMiscReg(i, src->readMiscReg(i));
@@ -565,7 +565,7 @@ bool
 CPUExecContext::simPalCheck(int palFunc)
 {
     if (kernelStats)
-        kernelStats->callpal(palFunc, proxy);
+        kernelStats->callpal(palFunc, tc);
 
     switch (palFunc) {
       case PAL::halt:
diff --git a/src/arch/alpha/faults.cc b/src/arch/alpha/faults.cc
index 88084bf86..8493223ff 100644
--- a/src/arch/alpha/faults.cc
+++ b/src/arch/alpha/faults.cc
@@ -30,7 +30,7 @@
  */
 
 #include "arch/alpha/faults.hh"
-#include "cpu/exec_context.hh"
+#include "cpu/thread_context.hh"
 #include "cpu/base.hh"
 #include "base/trace.hh"
 #if FULL_SYSTEM
@@ -110,67 +110,67 @@ FaultStat IntegerOverflowFault::_count;
 
 #if FULL_SYSTEM
 
-void AlphaFault::invoke(ExecContext * xc)
+void AlphaFault::invoke(ThreadContext * tc)
 {
-    FaultBase::invoke(xc);
+    FaultBase::invoke(tc);
     countStat()++;
 
     // exception restart address
-    if (setRestartAddress() || !xc->inPalMode())
-        xc->setMiscReg(AlphaISA::IPR_EXC_ADDR, xc->readPC());
+    if (setRestartAddress() || !tc->inPalMode())
+        tc->setMiscReg(AlphaISA::IPR_EXC_ADDR, tc->readPC());
 
     if (skipFaultingInstruction()) {
         // traps...  skip faulting instruction.
-        xc->setMiscReg(AlphaISA::IPR_EXC_ADDR,
-                   xc->readMiscReg(AlphaISA::IPR_EXC_ADDR) + 4);
+        tc->setMiscReg(AlphaISA::IPR_EXC_ADDR,
+                   tc->readMiscReg(AlphaISA::IPR_EXC_ADDR) + 4);
     }
 
-    xc->setPC(xc->readMiscReg(AlphaISA::IPR_PAL_BASE) + vect());
-    xc->setNextPC(xc->readPC() + sizeof(MachInst));
+    tc->setPC(tc->readMiscReg(AlphaISA::IPR_PAL_BASE) + vect());
+    tc->setNextPC(tc->readPC() + sizeof(MachInst));
 }
 
-void ArithmeticFault::invoke(ExecContext * xc)
+void ArithmeticFault::invoke(ThreadContext * tc)
 {
-    FaultBase::invoke(xc);
+    FaultBase::invoke(tc);
     panic("Arithmetic traps are unimplemented!");
 }
 
-void DtbFault::invoke(ExecContext * xc)
+void DtbFault::invoke(ThreadContext * tc)
 {
     // Set fault address and flags.  Even though we're modeling an
     // EV5, we use the EV6 technique of not latching fault registers
     // on VPTE loads (instead of locking the registers until IPR_VA is
     // read, like the EV5).  The EV6 approach is cleaner and seems to
     // work with EV5 PAL code, but not the other way around.
-    if (!xc->misspeculating()
+    if (!tc->misspeculating()
         && !(reqFlags & VPTE) && !(reqFlags & NO_FAULT)) {
         // set VA register with faulting address
-        xc->setMiscReg(AlphaISA::IPR_VA, vaddr);
+        tc->setMiscReg(AlphaISA::IPR_VA, vaddr);
 
         // set MM_STAT register flags
-        xc->setMiscReg(AlphaISA::IPR_MM_STAT,
-            (((EV5::Opcode(xc->getInst()) & 0x3f) << 11)
-             | ((EV5::Ra(xc->getInst()) & 0x1f) << 6)
+        tc->setMiscReg(AlphaISA::IPR_MM_STAT,
+            (((EV5::Opcode(tc->getInst()) & 0x3f) << 11)
+             | ((EV5::Ra(tc->getInst()) & 0x1f) << 6)
              | (flags & 0x3f)));
 
         // set VA_FORM register with faulting formatted address
-        xc->setMiscReg(AlphaISA::IPR_VA_FORM,
-            xc->readMiscReg(AlphaISA::IPR_MVPTBR) | (vaddr.vpn() << 3));
+        tc->setMiscReg(AlphaISA::IPR_VA_FORM,
+            tc->readMiscReg(AlphaISA::IPR_MVPTBR) | (vaddr.vpn() << 3));
     }
 
-    AlphaFault::invoke(xc);
+    AlphaFault::invoke(tc);
 }
 
-void ItbFault::invoke(ExecContext * xc)
+void ItbFault::invoke(ThreadContext * tc)
 {
-    if (!xc->misspeculating()) {
-        xc->setMiscReg(AlphaISA::IPR_ITB_TAG, pc);
-        xc->setMiscReg(AlphaISA::IPR_IFAULT_VA_FORM,
-                       xc->readMiscReg(AlphaISA::IPR_IVPTBR) |
+    if (!tc->misspeculating()) {
+        tc->setMiscReg(AlphaISA::IPR_ITB_TAG, pc);
+        tc->setMiscReg(AlphaISA::IPR_IFAULT_VA_FORM,
+                       tc->readMiscReg(AlphaISA::IPR_IVPTBR) |
                        (AlphaISA::VAddr(pc).vpn() << 3));
     }
 
-    AlphaFault::invoke(xc);
+    AlphaFault::invoke(tc);
 }
 
 #endif
diff --git a/src/arch/alpha/faults.hh b/src/arch/alpha/faults.hh
index 0d60367f7..f952cf9d6 100644
--- a/src/arch/alpha/faults.hh
+++ b/src/arch/alpha/faults.hh
@@ -49,7 +49,7 @@ class AlphaFault : public FaultBase
     virtual bool setRestartAddress() {return true;}
   public:
 #if FULL_SYSTEM
-    void invoke(ExecContext * xc);
+    void invoke(ThreadContext * tc);
 #endif
     virtual FaultVect vect() = 0;
     virtual FaultStat & countStat() = 0;
@@ -116,7 +116,7 @@ class ArithmeticFault : public AlphaFault
     FaultVect vect() {return _vect;}
     FaultStat & countStat() {return _count;}
 #if FULL_SYSTEM
-    void invoke(ExecContext * xc);
+    void invoke(ThreadContext * tc);
 #endif
 };
 
@@ -150,7 +150,7 @@ class DtbFault : public AlphaFault
     FaultVect vect() = 0;
     FaultStat & countStat() = 0;
 #if FULL_SYSTEM
-    void invoke(ExecContext * xc);
+    void invoke(ThreadContext * tc);
 #endif
 };
 
@@ -251,7 +251,7 @@ class ItbFault : public AlphaFault
     FaultVect vect() = 0;
     FaultStat & countStat() = 0;
 #if FULL_SYSTEM
-    void invoke(ExecContext * xc);
+    void invoke(ThreadContext * tc);
 #endif
 };
 
diff --git a/src/arch/alpha/freebsd/system.cc b/src/arch/alpha/freebsd/system.cc
index 2781fed3d..91f8b5af1 100644
--- a/src/arch/alpha/freebsd/system.cc
+++ b/src/arch/alpha/freebsd/system.cc
@@ -38,7 +38,7 @@
 #include "arch/alpha/system.hh"
 #include "arch/alpha/freebsd/system.hh"
 #include "base/loader/symtab.hh"
-#include "cpu/exec_context.hh"
+#include "cpu/thread_context.hh"
 #include "mem/physical.hh"
 #include "mem/port.hh"
 #include "arch/isa_traits.hh"
@@ -72,13 +72,13 @@ FreebsdAlphaSystem::~FreebsdAlphaSystem()
 
 
 void
-FreebsdAlphaSystem::doCalibrateClocks(ExecContext *xc)
+FreebsdAlphaSystem::doCalibrateClocks(ThreadContext *tc)
 {
     Addr ppc_vaddr = 0;
     Addr timer_vaddr = 0;
 
-    ppc_vaddr = (Addr)xc->readIntReg(ArgumentReg1);
-    timer_vaddr = (Addr)xc->readIntReg(ArgumentReg2);
+    ppc_vaddr = (Addr)tc->readIntReg(ArgumentReg1);
+    timer_vaddr = (Addr)tc->readIntReg(ArgumentReg2);
 
     virtPort.write(ppc_vaddr, (uint32_t)Clock::Frequency);
     virtPort.write(timer_vaddr, (uint32_t)TIMER_FREQUENCY);
@@ -86,10 +86,10 @@ FreebsdAlphaSystem::doCalibrateClocks(ExecContext *xc)
 
 
 void
-FreebsdAlphaSystem::SkipCalibrateClocksEvent::process(ExecContext *xc)
+FreebsdAlphaSystem::SkipCalibrateClocksEvent::process(ThreadContext *tc)
 {
-    SkipFuncEvent::process(xc);
-    ((FreebsdAlphaSystem *)xc->getSystemPtr())->doCalibrateClocks(xc);
+    SkipFuncEvent::process(tc);
+    ((FreebsdAlphaSystem *)tc->getSystemPtr())->doCalibrateClocks(tc);
 }
 
 
diff --git a/src/arch/alpha/freebsd/system.hh b/src/arch/alpha/freebsd/system.hh
index 46a5e665c..e0d874e8f 100644
--- a/src/arch/alpha/freebsd/system.hh
+++ b/src/arch/alpha/freebsd/system.hh
@@ -42,7 +42,7 @@ class FreebsdAlphaSystem : public AlphaSystem
         SkipCalibrateClocksEvent(PCEventQueue *q, const std::string &desc,
                                  Addr addr)
             : SkipFuncEvent(q, desc, addr) {}
-        virtual void process(ExecContext *xc);
+        virtual void process(ThreadContext *tc);
     };
 
     SkipFuncEvent *skipDelayEvent;
@@ -51,7 +51,7 @@ class FreebsdAlphaSystem : public AlphaSystem
   public:
     FreebsdAlphaSystem(Params *p);
     ~FreebsdAlphaSystem();
-    void doCalibrateClocks(ExecContext *xc);
+    void doCalibrateClocks(ThreadContext *tc);
 
 };
 
diff --git a/src/arch/alpha/isa/branch.isa b/src/arch/alpha/isa/branch.isa
index aa7abf289..7438e7e18 100644
--- a/src/arch/alpha/isa/branch.isa
+++ b/src/arch/alpha/isa/branch.isa
@@ -106,7 +106,7 @@ output header {{
         {
         }
 
-        Addr branchTarget(ExecContext *xc) const;
+        Addr branchTarget(ThreadContext *tc) const;
 
         std::string
         generateDisassembly(Addr pc, const SymbolTable *symtab) const;
@@ -121,10 +121,10 @@ output decoder {{
     }
 
     Addr
-    Jump::branchTarget(ExecContext *xc) const
+    Jump::branchTarget(ThreadContext *tc) const
     {
-        Addr NPC = xc->readPC() + 4;
-        uint64_t Rb = xc->readIntReg(_srcRegIdx[0]);
+        Addr NPC = tc->readPC() + 4;
+        uint64_t Rb = tc->readIntReg(_srcRegIdx[0]);
         return (Rb & ~3) | (NPC & 1);
     }
 
diff --git a/src/arch/alpha/isa/decoder.isa b/src/arch/alpha/isa/decoder.isa
index 6e19f2343..fab2ca2e1 100644
--- a/src/arch/alpha/isa/decoder.isa
+++ b/src/arch/alpha/isa/decoder.isa
@@ -765,56 +765,56 @@ decode OPCODE default Unknown::unknown() {
         // M5 special opcodes use the reserved 0x01 opcode space
         0x01: decode M5FUNC {
             0x00: arm({{
-                AlphaPseudo::arm(xc->xcBase());
+                AlphaPseudo::arm(xc->tcBase());
             }}, IsNonSpeculative);
             0x01: quiesce({{
-                AlphaPseudo::quiesce(xc->xcBase());
+                AlphaPseudo::quiesce(xc->tcBase());
             }}, IsNonSpeculative, IsQuiesce);
             0x02: quiesceNs({{
-                AlphaPseudo::quiesceNs(xc->xcBase(), R16);
+                AlphaPseudo::quiesceNs(xc->tcBase(), R16);
             }}, IsNonSpeculative, IsQuiesce);
             0x03: quiesceCycles({{
-                AlphaPseudo::quiesceCycles(xc->xcBase(), R16);
+                AlphaPseudo::quiesceCycles(xc->tcBase(), R16);
             }}, IsNonSpeculative, IsQuiesce);
             0x04: quiesceTime({{
-                R0 = AlphaPseudo::quiesceTime(xc->xcBase());
+                R0 = AlphaPseudo::quiesceTime(xc->tcBase());
             }}, IsNonSpeculative);
             0x10: ivlb({{
-                AlphaPseudo::ivlb(xc->xcBase());
+                AlphaPseudo::ivlb(xc->tcBase());
             }}, No_OpClass, IsNonSpeculative);
             0x11: ivle({{
-                AlphaPseudo::ivle(xc->xcBase());
+                AlphaPseudo::ivle(xc->tcBase());
             }}, No_OpClass, IsNonSpeculative);
             0x20: m5exit_old({{
-                AlphaPseudo::m5exit_old(xc->xcBase());
+                AlphaPseudo::m5exit_old(xc->tcBase());
             }}, No_OpClass, IsNonSpeculative);
             0x21: m5exit({{
-                AlphaPseudo::m5exit(xc->xcBase(), R16);
+                AlphaPseudo::m5exit(xc->tcBase(), R16);
             }}, No_OpClass, IsNonSpeculative);
-            0x30: initparam({{ Ra = xc->xcBase()->getCpuPtr()->system->init_param; }});
+            0x30: initparam({{ Ra = xc->tcBase()->getCpuPtr()->system->init_param; }});
             0x40: resetstats({{
-                AlphaPseudo::resetstats(xc->xcBase(), R16, R17);
+                AlphaPseudo::resetstats(xc->tcBase(), R16, R17);
             }}, IsNonSpeculative);
             0x41: dumpstats({{
-                AlphaPseudo::dumpstats(xc->xcBase(), R16, R17);
+                AlphaPseudo::dumpstats(xc->tcBase(), R16, R17);
             }}, IsNonSpeculative);
             0x42: dumpresetstats({{
-                AlphaPseudo::dumpresetstats(xc->xcBase(), R16, R17);
+                AlphaPseudo::dumpresetstats(xc->tcBase(), R16, R17);
             }}, IsNonSpeculative);
             0x43: m5checkpoint({{
-                AlphaPseudo::m5checkpoint(xc->xcBase(), R16, R17);
+                AlphaPseudo::m5checkpoint(xc->tcBase(), R16, R17);
             }}, IsNonSpeculative);
             0x50: m5readfile({{
-                R0 = AlphaPseudo::readfile(xc->xcBase(), R16, R17, R18);
+                R0 = AlphaPseudo::readfile(xc->tcBase(), R16, R17, R18);
             }}, IsNonSpeculative);
             0x51: m5break({{
-                AlphaPseudo::debugbreak(xc->xcBase());
+                AlphaPseudo::debugbreak(xc->tcBase());
             }}, IsNonSpeculative);
             0x52: m5switchcpu({{
-                AlphaPseudo::switchcpu(xc->xcBase());
+                AlphaPseudo::switchcpu(xc->tcBase());
             }}, IsNonSpeculative);
             0x53: m5addsymbol({{
-                AlphaPseudo::addsymbol(xc->xcBase(), R16, R17);
+                AlphaPseudo::addsymbol(xc->tcBase(), R16, R17);
             }}, IsNonSpeculative);
             0x54: m5panic({{
                 panic("M5 panic instruction called at pc=%#x.", xc->readPC());
diff --git a/src/arch/alpha/isa/main.isa b/src/arch/alpha/isa/main.isa
index 91ece0935..1270bf8d8 100644
--- a/src/arch/alpha/isa/main.isa
+++ b/src/arch/alpha/isa/main.isa
@@ -56,7 +56,7 @@ output decoder {{
 #include "base/fenv.hh"
 #include "base/loader/symtab.hh"
 #include "config/ss_compatible_fp.hh"
-#include "cpu/exec_context.hh"  // for Jump::branchTarget()
+#include "cpu/thread_context.hh"  // for Jump::branchTarget()
 
 #include <math.h>
 
diff --git a/src/arch/alpha/linux/process.cc b/src/arch/alpha/linux/process.cc
index abd17c224..997c78ac9 100644
--- a/src/arch/alpha/linux/process.cc
+++ b/src/arch/alpha/linux/process.cc
@@ -34,7 +34,7 @@
 #include "arch/alpha/isa_traits.hh"
 
 #include "base/trace.hh"
-#include "cpu/exec_context.hh"
+#include "cpu/thread_context.hh"
 #include "kern/linux/linux.hh"
 
 #include "sim/process.hh"
@@ -48,9 +48,9 @@ using namespace AlphaISA;
 /// Target uname() handler.
 static SyscallReturn
 unameFunc(SyscallDesc *desc, int callnum, Process *process,
-          ExecContext *xc)
+          ThreadContext *tc)
 {
-    TypedBufferArg<Linux::utsname> name(xc->getSyscallArg(0));
+    TypedBufferArg<Linux::utsname> name(tc->getSyscallArg(0));
 
     strcpy(name->sysname, "Linux");
     strcpy(name->nodename, "m5.eecs.umich.edu");
@@ -58,7 +58,7 @@ unameFunc(SyscallDesc *desc, int callnum, Process *process,
     strcpy(name->version, "#1 Mon Aug 18 11:32:15 EDT 2003");
     strcpy(name->machine, "alpha");
 
-    name.copyOut(xc->getMemPort());
+    name.copyOut(tc->getMemPort());
     return 0;
 }
 
@@ -67,18 +67,18 @@ unameFunc(SyscallDesc *desc, int callnum, Process *process,
 /// different in practice from those used by Tru64 processes.
 static SyscallReturn
 osf_getsysinfoFunc(SyscallDesc *desc, int callnum, Process *process,
-                   ExecContext *xc)
+                   ThreadContext *tc)
 {
-    unsigned op = xc->getSyscallArg(0);
-    // unsigned nbytes = xc->getSyscallArg(2);
+    unsigned op = tc->getSyscallArg(0);
+    // unsigned nbytes = tc->getSyscallArg(2);
 
     switch (op) {
 
       case 45: { // GSI_IEEE_FP_CONTROL
-          TypedBufferArg<uint64_t> fpcr(xc->getSyscallArg(1));
+          TypedBufferArg<uint64_t> fpcr(tc->getSyscallArg(1));
           // I don't think this exactly matches the HW FPCR
           *fpcr = 0;
-          fpcr.copyOut(xc->getMemPort());
+          fpcr.copyOut(tc->getMemPort());
           return 0;
       }
 
@@ -94,17 +94,17 @@ osf_getsysinfoFunc(SyscallDesc *desc, int callnum, Process *process,
 /// Target osf_setsysinfo() handler.
 static SyscallReturn
 osf_setsysinfoFunc(SyscallDesc *desc, int callnum, Process *process,
-                   ExecContext *xc)
+                   ThreadContext *tc)
 {
-    unsigned op = xc->getSyscallArg(0);
-    // unsigned nbytes = xc->getSyscallArg(2);
+    unsigned op = tc->getSyscallArg(0);
+    // unsigned nbytes = tc->getSyscallArg(2);
 
     switch (op) {
 
       case 14: { // SSI_IEEE_FP_CONTROL
-          TypedBufferArg<uint64_t> fpcr(xc->getSyscallArg(1));
+          TypedBufferArg<uint64_t> fpcr(tc->getSyscallArg(1));
           // I don't think this exactly matches the HW FPCR
-          fpcr.copyIn(xc->getMemPort());
+          fpcr.copyIn(tc->getMemPort());
           DPRINTFR(SyscallVerbose, "osf_setsysinfo(SSI_IEEE_FP_CONTROL): "
                    " setting FPCR to 0x%x\n", gtoh(*(uint64_t*)fpcr));
           return 0;
diff --git a/src/arch/alpha/linux/system.cc b/src/arch/alpha/linux/system.cc
index f267e9d42..e6c6f42e9 100644
--- a/src/arch/alpha/linux/system.cc
+++ b/src/arch/alpha/linux/system.cc
@@ -46,7 +46,7 @@
 #include "arch/alpha/linux/threadinfo.hh"
 #include "arch/alpha/system.hh"
 #include "base/loader/symtab.hh"
-#include "cpu/exec_context.hh"
+#include "cpu/thread_context.hh"
 #include "cpu/base.hh"
 #include "dev/platform.hh"
 #include "kern/linux/printk.hh"
@@ -175,30 +175,30 @@ LinuxAlphaSystem::~LinuxAlphaSystem()
 
 
 void
-LinuxAlphaSystem::setDelayLoop(ExecContext *xc)
+LinuxAlphaSystem::setDelayLoop(ThreadContext *tc)
 {
     Addr addr = 0;
     if (kernelSymtab->findAddress("loops_per_jiffy", addr)) {
-        Tick cpuFreq = xc->getCpuPtr()->frequency();
+        Tick cpuFreq = tc->getCpuPtr()->frequency();
         Tick intrFreq = platform->intrFrequency();
-        xc->getVirtPort(xc)->write(addr,
+        tc->getVirtPort(tc)->write(addr,
                 (uint32_t)((cpuFreq / intrFreq) * 0.9988));
     }
 }
 
 
 void
-LinuxAlphaSystem::SkipDelayLoopEvent::process(ExecContext *xc)
+LinuxAlphaSystem::SkipDelayLoopEvent::process(ThreadContext *tc)
 {
-    SkipFuncEvent::process(xc);
+    SkipFuncEvent::process(tc);
     // calculate and set loops_per_jiffy
-    ((LinuxAlphaSystem *)xc->getSystemPtr())->setDelayLoop(xc);
+    ((LinuxAlphaSystem *)tc->getSystemPtr())->setDelayLoop(tc);
 }
 
 void
-LinuxAlphaSystem::PrintThreadInfo::process(ExecContext *xc)
+LinuxAlphaSystem::PrintThreadInfo::process(ThreadContext *tc)
 {
-    Linux::ThreadInfo ti(xc);
+    Linux::ThreadInfo ti(tc);
 
     DPRINTF(Thread, "Currently Executing Thread %s, pid %d, started at: %d\n",
             ti.curTaskName(), ti.curTaskPID(), ti.curTaskStart());
diff --git a/src/arch/alpha/linux/system.hh b/src/arch/alpha/linux/system.hh
index 46bf6ea91..c03586ac5 100644
--- a/src/arch/alpha/linux/system.hh
+++ b/src/arch/alpha/linux/system.hh
@@ -33,7 +33,7 @@
 #ifndef __ARCH_ALPHA_LINUX_SYSTEM_HH__
 #define __ARCH_ALPHA_LINUX_SYSTEM_HH__
 
-class ExecContext;
+class ThreadContext;
 
 class BreakPCEvent;
 class IdleStartEvent;
@@ -57,7 +57,7 @@ class LinuxAlphaSystem : public AlphaSystem
       public:
         SkipDelayLoopEvent(PCEventQueue *q, const std::string &desc, Addr addr)
             : SkipFuncEvent(q, desc, addr) {}
-        virtual void process(ExecContext *xc);
+        virtual void process(ThreadContext *tc);
     };
 
     class PrintThreadInfo : public PCEvent
@@ -65,7 +65,7 @@ class LinuxAlphaSystem : public AlphaSystem
       public:
         PrintThreadInfo(PCEventQueue *q, const std::string &desc, Addr addr)
             : PCEvent(q, desc, addr) {}
-        virtual void process(ExecContext *xc);
+        virtual void process(ThreadContext *tc);
     };
 
 
@@ -143,7 +143,7 @@ class LinuxAlphaSystem : public AlphaSystem
     LinuxAlphaSystem(Params *p);
     ~LinuxAlphaSystem();
 
-    void setDelayLoop(ExecContext *xc);
+    void setDelayLoop(ThreadContext *tc);
 };
 
 #endif // __ARCH_ALPHA_LINUX_SYSTEM_HH__
diff --git a/src/arch/alpha/linux/threadinfo.hh b/src/arch/alpha/linux/threadinfo.hh
index 74444f427..caeb69f15 100644
--- a/src/arch/alpha/linux/threadinfo.hh
+++ b/src/arch/alpha/linux/threadinfo.hh
@@ -33,7 +33,7 @@
 #define __ARCH_ALPHA_LINUX_LINUX_TREADNIFO_HH__
 
 #include "arch/alpha/linux/thread_info.hh"
-#include "cpu/exec_context.hh"
+#include "cpu/thread_context.hh"
 #include "kern/linux/sched.hh"
 #include "sim/vptr.hh"
 
@@ -42,10 +42,10 @@ namespace Linux {
 class ThreadInfo
 {
   private:
-    ExecContext *xc;
+    ThreadContext *tc;
 
   public:
-    ThreadInfo(ExecContext *exec) : xc(exec) {}
+    ThreadInfo(ThreadContext *_tc) : tc(_tc) {}
     ~ThreadInfo() {}
 
     inline VPtr<thread_info>
@@ -57,15 +57,15 @@ class ThreadInfo
          * thread_info struct. So we can get the address by masking off
          * the lower 14 bits.
          */
-        current = xc->readIntReg(TheISA::StackPointerReg) & ~0x3fff;
-        return VPtr<thread_info>(xc, current);
+        current = tc->readIntReg(TheISA::StackPointerReg) & ~0x3fff;
+        return VPtr<thread_info>(tc, current);
     }
 
     inline VPtr<task_struct>
     curTaskInfo()
     {
         Addr task = curThreadInfo()->task;
-        return VPtr<task_struct>(xc, task);
+        return VPtr<task_struct>(tc, task);
     }
 
     std::string
diff --git a/src/arch/alpha/process.cc b/src/arch/alpha/process.cc
index 490e04972..4c0c68761 100644
--- a/src/arch/alpha/process.cc
+++ b/src/arch/alpha/process.cc
@@ -35,7 +35,7 @@
 #include "arch/alpha/tru64/process.hh"
 #include "base/loader/object_file.hh"
 #include "base/misc.hh"
-#include "cpu/exec_context.hh"
+#include "cpu/thread_context.hh"
 #include "sim/builder.hh"
 #include "sim/system.hh"
 
@@ -107,7 +107,7 @@ AlphaLiveProcess::startup()
 {
     argsInit(MachineBytes, VMPageSize);
 
-    execContexts[0]->setIntReg(GlobalPointerReg, objFile->globalPointer());
+    threadContexts[0]->setIntReg(GlobalPointerReg, objFile->globalPointer());
 }
 
 
diff --git a/src/arch/alpha/regfile.hh b/src/arch/alpha/regfile.hh
index 2652144b6..ed410fddb 100644
--- a/src/arch/alpha/regfile.hh
+++ b/src/arch/alpha/regfile.hh
@@ -36,7 +36,7 @@
 #include "sim/faults.hh"
 
 class Checkpoint;
-class ExecContext;
+class ThreadContext;
 
 namespace AlphaISA
 {
@@ -90,7 +90,7 @@ namespace AlphaISA
         MiscReg readReg(int misc_reg);
 
         MiscReg readRegWithEffect(int misc_reg, Fault &fault,
-                ExecContext *xc);
+                ThreadContext *tc);
 
         //These functions should be removed once the simplescalar cpu model
         //has been replaced.
@@ -100,7 +100,7 @@ namespace AlphaISA
         Fault setReg(int misc_reg, const MiscReg &val);
 
         Fault setRegWithEffect(int misc_reg, const MiscReg &val,
-                ExecContext *xc);
+                ThreadContext *tc);
 
 #if FULL_SYSTEM
       protected:
@@ -109,9 +109,9 @@ namespace AlphaISA
         InternalProcReg ipr[NumInternalProcRegs]; // Internal processor regs
 
       private:
-        InternalProcReg readIpr(int idx, Fault &fault, ExecContext *xc);
+        InternalProcReg readIpr(int idx, Fault &fault, ThreadContext *tc);
 
-        Fault setIpr(int idx, InternalProcReg val, ExecContext *xc);
+        Fault setIpr(int idx, InternalProcReg val, ThreadContext *tc);
 #endif
         friend class RegFile;
     };
@@ -182,10 +182,10 @@ namespace AlphaISA
         }
 
         MiscReg readMiscRegWithEffect(int miscReg,
-                Fault &fault, ExecContext *xc)
+                Fault &fault, ThreadContext *tc)
         {
             fault = NoFault;
-            return miscRegFile.readRegWithEffect(miscReg, fault, xc);
+            return miscRegFile.readRegWithEffect(miscReg, fault, tc);
         }
 
         Fault setMiscReg(int miscReg, const MiscReg &val)
@@ -194,9 +194,9 @@ namespace AlphaISA
         }
 
         Fault setMiscRegWithEffect(int miscReg, const MiscReg &val,
-                ExecContext * xc)
+                ThreadContext * tc)
         {
-            return miscRegFile.setRegWithEffect(miscReg, val, xc);
+            return miscRegFile.setRegWithEffect(miscReg, val, tc);
         }
 
         FloatReg readFloatReg(int floatReg)
@@ -268,12 +268,12 @@ namespace AlphaISA
         }
     };
 
-    void copyRegs(ExecContext *src, ExecContext *dest);
+    void copyRegs(ThreadContext *src, ThreadContext *dest);
 
-    void copyMiscRegs(ExecContext *src, ExecContext *dest);
+    void copyMiscRegs(ThreadContext *src, ThreadContext *dest);
 
 #if FULL_SYSTEM
-    void copyIprs(ExecContext *src, ExecContext *dest);
+    void copyIprs(ThreadContext *src, ThreadContext *dest);
 #endif
 } // namespace AlphaISA
 
diff --git a/src/arch/alpha/stacktrace.cc b/src/arch/alpha/stacktrace.cc
index 792b63e2f..3519fd940 100644
--- a/src/arch/alpha/stacktrace.cc
+++ b/src/arch/alpha/stacktrace.cc
@@ -36,36 +36,36 @@
 #include "base/bitfield.hh"
 #include "base/trace.hh"
 #include "cpu/base.hh"
-#include "cpu/exec_context.hh"
+#include "cpu/thread_context.hh"
 #include "sim/system.hh"
 
 using namespace std;
 using namespace AlphaISA;
 
-ProcessInfo::ProcessInfo(ExecContext *_xc)
-    : xc(_xc)
+ProcessInfo::ProcessInfo(ThreadContext *_tc)
+    : tc(_tc)
 {
     Addr addr = 0;
 
-    if (!xc->getSystemPtr()->kernelSymtab->findAddress("thread_info_size", addr))
+    if (!tc->getSystemPtr()->kernelSymtab->findAddress("thread_info_size", addr))
         panic("thread info not compiled into kernel\n");
-    thread_info_size = gtoh(xc->getVirtPort()->read<int32_t>(addr));
+    thread_info_size = gtoh(tc->getVirtPort()->read<int32_t>(addr));
 
-    if (!xc->getSystemPtr()->kernelSymtab->findAddress("task_struct_size", addr))
+    if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_size", addr))
         panic("thread info not compiled into kernel\n");
-    task_struct_size = gtoh(xc->getVirtPort()->read<int32_t>(addr));
+    task_struct_size = gtoh(tc->getVirtPort()->read<int32_t>(addr));
 
-    if (!xc->getSystemPtr()->kernelSymtab->findAddress("thread_info_task", addr))
+    if (!tc->getSystemPtr()->kernelSymtab->findAddress("thread_info_task", addr))
         panic("thread info not compiled into kernel\n");
-    task_off = gtoh(xc->getVirtPort()->read<int32_t>(addr));
+    task_off = gtoh(tc->getVirtPort()->read<int32_t>(addr));
 
-    if (!xc->getSystemPtr()->kernelSymtab->findAddress("task_struct_pid", addr))
+    if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_pid", addr))
         panic("thread info not compiled into kernel\n");
-    pid_off = gtoh(xc->getVirtPort()->read<int32_t>(addr));
+    pid_off = gtoh(tc->getVirtPort()->read<int32_t>(addr));
 
-    if (!xc->getSystemPtr()->kernelSymtab->findAddress("task_struct_comm", addr))
+    if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_comm", addr))
         panic("thread info not compiled into kernel\n");
-    name_off = gtoh(xc->getVirtPort()->read<int32_t>(addr));
+    name_off = gtoh(tc->getVirtPort()->read<int32_t>(addr));
 }
 
 Addr
@@ -75,7 +75,7 @@ ProcessInfo::task(Addr ksp) const
     if (base == ULL(0xfffffc0000000000))
         return 0;
 
-    return gtoh(xc->getVirtPort()->read<Addr>(base + task_off));
+    return gtoh(tc->getVirtPort()->read<Addr>(base + task_off));
 }
 
 int
@@ -85,7 +85,7 @@ ProcessInfo::pid(Addr ksp) const
     if (!task)
         return -1;
 
-    return gtoh(xc->getVirtPort()->read<uint16_t>(task + pid_off));
+    return gtoh(tc->getVirtPort()->read<uint16_t>(task + pid_off));
 }
 
 string
@@ -96,7 +96,7 @@ ProcessInfo::name(Addr ksp) const
         return "console";
 
     char comm[256];
-    CopyStringOut(xc, comm, task + name_off, sizeof(comm));
+    CopyStringOut(tc, comm, task + name_off, sizeof(comm));
     if (!comm[0])
         return "startup";
 
@@ -104,14 +104,14 @@ ProcessInfo::name(Addr ksp) const
 }
 
 StackTrace::StackTrace()
-    : xc(0), stack(64)
+    : tc(0), stack(64)
 {
 }
 
-StackTrace::StackTrace(ExecContext *_xc, StaticInstPtr inst)
-    : xc(0), stack(64)
+StackTrace::StackTrace(ThreadContext *_tc, StaticInstPtr inst)
+    : tc(0), stack(64)
 {
-    trace(_xc, inst);
+    trace(_tc, inst);
 }
 
 StackTrace::~StackTrace()
@@ -119,15 +119,15 @@ StackTrace::~StackTrace()
 }
 
 void
-StackTrace::trace(ExecContext *_xc, bool is_call)
+StackTrace::trace(ThreadContext *_tc, bool is_call)
 {
-    xc = _xc;
+    tc = _tc;
 
-    bool usermode = (xc->readMiscReg(AlphaISA::IPR_DTB_CM) & 0x18) != 0;
+    bool usermode = (tc->readMiscReg(AlphaISA::IPR_DTB_CM) & 0x18) != 0;
 
-    Addr pc = xc->readNextPC();
-    bool kernel = xc->getSystemPtr()->kernelStart <= pc &&
-        pc <= xc->getSystemPtr()->kernelEnd;
+    Addr pc = tc->readNextPC();
+    bool kernel = tc->getSystemPtr()->kernelStart <= pc &&
+        pc <= tc->getSystemPtr()->kernelEnd;
 
     if (usermode) {
         stack.push_back(user);
@@ -139,8 +139,8 @@ StackTrace::trace(ExecContext *_xc, bool is_call)
         return;
     }
 
-    SymbolTable *symtab = xc->getSystemPtr()->kernelSymtab;
-    Addr ksp = xc->readIntReg(TheISA::StackPointerReg);
+    SymbolTable *symtab = tc->getSystemPtr()->kernelSymtab;
+    Addr ksp = tc->readIntReg(TheISA::StackPointerReg);
     Addr bottom = ksp & ~0x3fff;
     Addr addr;
 
@@ -149,7 +149,7 @@ StackTrace::trace(ExecContext *_xc, bool is_call)
             panic("could not find address %#x", pc);
 
         stack.push_back(addr);
-        pc = xc->readPC();
+        pc = tc->readPC();
     }
 
     Addr ra;
@@ -181,8 +181,8 @@ StackTrace::trace(ExecContext *_xc, bool is_call)
             return;
         }
 
-        bool kernel = xc->getSystemPtr()->kernelStart <= pc &&
-            pc <= xc->getSystemPtr()->kernelEnd;
+        bool kernel = tc->getSystemPtr()->kernelStart <= pc &&
+            pc <= tc->getSystemPtr()->kernelEnd;
         if (!kernel)
             return;
 
@@ -196,22 +196,22 @@ StackTrace::trace(ExecContext *_xc, bool is_call)
 bool
 StackTrace::isEntry(Addr addr)
 {
-    if (addr == xc->readMiscReg(AlphaISA::IPR_PALtemp12))
+    if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp12))
         return true;
 
-    if (addr == xc->readMiscReg(AlphaISA::IPR_PALtemp7))
+    if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp7))
         return true;
 
-    if (addr == xc->readMiscReg(AlphaISA::IPR_PALtemp11))
+    if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp11))
         return true;
 
-    if (addr == xc->readMiscReg(AlphaISA::IPR_PALtemp21))
+    if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp21))
         return true;
 
-    if (addr == xc->readMiscReg(AlphaISA::IPR_PALtemp9))
+    if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp9))
         return true;
 
-    if (addr == xc->readMiscReg(AlphaISA::IPR_PALtemp2))
+    if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp2))
         return true;
 
     return false;
@@ -296,7 +296,7 @@ StackTrace::decodePrologue(Addr sp, Addr callpc, Addr func,
 
     for (Addr pc = func; pc < callpc; pc += sizeof(MachInst)) {
         MachInst inst;
-        CopyOut(xc, (uint8_t *)&inst, pc, sizeof(MachInst));
+        CopyOut(tc, (uint8_t *)&inst, pc, sizeof(MachInst));
 
         int reg, disp;
         if (decodeStack(inst, disp)) {
@@ -307,7 +307,7 @@ StackTrace::decodePrologue(Addr sp, Addr callpc, Addr func,
             size += disp;
         } else if (decodeSave(inst, reg, disp)) {
             if (!ra && reg == ReturnAddressReg) {
-                CopyOut(xc, (uint8_t *)&ra, sp + disp, sizeof(Addr));
+                CopyOut(tc, (uint8_t *)&ra, sp + disp, sizeof(Addr));
                 if (!ra) {
                     // panic("no return address value pc=%#x\n", pc);
                     return false;
@@ -323,8 +323,8 @@ StackTrace::decodePrologue(Addr sp, Addr callpc, Addr func,
 void
 StackTrace::dump()
 {
-    StringWrap name(xc->getCpuPtr()->name());
-    SymbolTable *symtab = xc->getSystemPtr()->kernelSymtab;
+    StringWrap name(tc->getCpuPtr()->name());
+    SymbolTable *symtab = tc->getSystemPtr()->kernelSymtab;
 
     DPRINTFN("------ Stack ------\n");
 
diff --git a/src/arch/alpha/stacktrace.hh b/src/arch/alpha/stacktrace.hh
index dd86a1553..d12aee211 100644
--- a/src/arch/alpha/stacktrace.hh
+++ b/src/arch/alpha/stacktrace.hh
@@ -34,13 +34,13 @@
 #include "base/trace.hh"
 #include "cpu/static_inst.hh"
 
-class ExecContext;
+class ThreadContext;
 class StackTrace;
 
 class ProcessInfo
 {
   private:
-    ExecContext *xc;
+    ThreadContext *tc;
 
     int thread_info_size;
     int task_struct_size;
@@ -49,7 +49,7 @@ class ProcessInfo
     int name_off;
 
   public:
-    ProcessInfo(ExecContext *_xc);
+    ProcessInfo(ThreadContext *_tc);
 
     Addr task(Addr ksp) const;
     int pid(Addr ksp) const;
@@ -61,7 +61,7 @@ class StackTrace
   protected:
     typedef TheISA::MachInst MachInst;
   private:
-    ExecContext *xc;
+    ThreadContext *tc;
     std::vector<Addr> stack;
 
   private:
@@ -70,21 +70,21 @@ class StackTrace
     bool decodeSave(MachInst inst, int &reg, int &disp);
     bool decodeStack(MachInst inst, int &disp);
 
-    void trace(ExecContext *xc, bool is_call);
+    void trace(ThreadContext *tc, bool is_call);
 
   public:
     StackTrace();
-    StackTrace(ExecContext *xc, StaticInstPtr inst);
+    StackTrace(ThreadContext *tc, StaticInstPtr inst);
     ~StackTrace();
 
     void clear()
     {
-        xc = 0;
+        tc = 0;
         stack.clear();
     }
 
-    bool valid() const { return xc != NULL; }
-    bool trace(ExecContext *xc, StaticInstPtr inst);
+    bool valid() const { return tc != NULL; }
+    bool trace(ThreadContext *tc, StaticInstPtr inst);
 
   public:
     const std::vector<Addr> &getstack() const { return stack; }
@@ -106,7 +106,7 @@ class StackTrace
 };
 
 inline bool
-StackTrace::trace(ExecContext *xc, StaticInstPtr inst)
+StackTrace::trace(ThreadContext *tc, StaticInstPtr inst)
 {
     if (!inst->isCall() && !inst->isReturn())
         return false;
@@ -114,7 +114,7 @@ StackTrace::trace(ExecContext *xc, StaticInstPtr inst)
     if (valid())
         clear();
 
-    trace(xc, !inst->isReturn());
+    trace(tc, !inst->isReturn());
     return true;
 }
 
diff --git a/src/arch/alpha/tlb.cc b/src/arch/alpha/tlb.cc
index 0bcca1887..c6684274b 100644
--- a/src/arch/alpha/tlb.cc
+++ b/src/arch/alpha/tlb.cc
@@ -38,7 +38,7 @@
 #include "base/str.hh"
 #include "base/trace.hh"
 #include "config/alpha_tlaser.hh"
-#include "cpu/exec_context.hh"
+#include "cpu/thread_context.hh"
 #include "sim/builder.hh"
 
 using namespace std;
@@ -286,7 +286,7 @@ AlphaITB::regStats()
 
 
 Fault
-AlphaITB::translate(RequestPtr &req, ExecContext *xc) const
+AlphaITB::translate(RequestPtr &req, ThreadContext *tc) const
 {
     if (AlphaISA::PcPAL(req->getVaddr())) {
         // strip off PAL PC marker (lsb is 1)
@@ -308,13 +308,13 @@ AlphaITB::translate(RequestPtr &req, ExecContext *xc) const
         // VA<42:41> == 2, VA<39:13> maps directly to PA<39:13> for EV5
         // VA<47:41> == 0x7e, VA<40:13> maps directly to PA<40:13> for EV6
 #if ALPHA_TLASER
-        if ((MCSR_SP(xc->readMiscReg(AlphaISA::IPR_MCSR)) & 2) &&
+        if ((MCSR_SP(tc->readMiscReg(AlphaISA::IPR_MCSR)) & 2) &&
             VAddrSpaceEV5(req->getVaddr()) == 2) {
 #else
         if (VAddrSpaceEV6(req->getVaddr()) == 0x7e) {
 #endif
             // only valid in kernel mode
-            if (ICM_CM(xc->readMiscReg(AlphaISA::IPR_ICM)) !=
+            if (ICM_CM(tc->readMiscReg(AlphaISA::IPR_ICM)) !=
                 AlphaISA::mode_kernel) {
                 acv++;
                 return new ItbAcvFault(req->getVaddr());
@@ -332,7 +332,7 @@ AlphaITB::translate(RequestPtr &req, ExecContext *xc) const
 
         } else {
             // not a physical address: need to look up pte
-            int asn = DTB_ASN_ASN(xc->readMiscReg(AlphaISA::IPR_DTB_ASN));
+            int asn = DTB_ASN_ASN(tc->readMiscReg(AlphaISA::IPR_DTB_ASN));
             AlphaISA::PTE *pte = lookup(AlphaISA::VAddr(req->getVaddr()).vpn(),
                                         asn);
 
@@ -347,7 +347,7 @@ AlphaITB::translate(RequestPtr &req, ExecContext *xc) const
 
             // check permissions for this access
             if (!(pte->xre &
-                  (1 << ICM_CM(xc->readMiscReg(AlphaISA::IPR_ICM))))) {
+                  (1 << ICM_CM(tc->readMiscReg(AlphaISA::IPR_ICM))))) {
                 // instruction access fault
                 acv++;
                 return new ItbAcvFault(req->getVaddr());
@@ -443,12 +443,12 @@ AlphaDTB::regStats()
 }
 
 Fault
-AlphaDTB::translate(RequestPtr &req, ExecContext *xc, bool write) const
+AlphaDTB::translate(RequestPtr &req, ThreadContext *tc, bool write) const
 {
-    Addr pc = xc->readPC();
+    Addr pc = tc->readPC();
 
     AlphaISA::mode_type mode =
-        (AlphaISA::mode_type)DTB_CM_CM(xc->readMiscReg(AlphaISA::IPR_DTB_CM));
+        (AlphaISA::mode_type)DTB_CM_CM(tc->readMiscReg(AlphaISA::IPR_DTB_CM));
 
 
     /**
@@ -464,7 +464,7 @@ AlphaDTB::translate(RequestPtr &req, ExecContext *xc, bool write) const
     if (pc & 0x1) {
         mode = (req->getFlags() & ALTMODE) ?
             (AlphaISA::mode_type)ALT_MODE_AM(
-                xc->readMiscReg(AlphaISA::IPR_ALT_MODE))
+                tc->readMiscReg(AlphaISA::IPR_ALT_MODE))
             : AlphaISA::mode_kernel;
     }
 
@@ -482,14 +482,14 @@ AlphaDTB::translate(RequestPtr &req, ExecContext *xc, bool write) const
 
         // Check for "superpage" mapping
 #if ALPHA_TLASER
-        if ((MCSR_SP(xc->readMiscReg(AlphaISA::IPR_MCSR)) & 2) &&
+        if ((MCSR_SP(tc->readMiscReg(AlphaISA::IPR_MCSR)) & 2) &&
             VAddrSpaceEV5(req->getVaddr()) == 2) {
 #else
         if (VAddrSpaceEV6(req->getVaddr()) == 0x7e) {
 #endif
 
             // only valid in kernel mode
-            if (DTB_CM_CM(xc->readMiscReg(AlphaISA::IPR_DTB_CM)) !=
+            if (DTB_CM_CM(tc->readMiscReg(AlphaISA::IPR_DTB_CM)) !=
                 AlphaISA::mode_kernel) {
                 if (write) { write_acv++; } else { read_acv++; }
                 uint64_t flags = ((write ? MM_STAT_WR_MASK : 0) |
@@ -513,7 +513,7 @@ AlphaDTB::translate(RequestPtr &req, ExecContext *xc, bool write) const
             else
                 read_accesses++;
 
-            int asn = DTB_ASN_ASN(xc->readMiscReg(AlphaISA::IPR_DTB_ASN));
+            int asn = DTB_ASN_ASN(tc->readMiscReg(AlphaISA::IPR_DTB_ASN));
 
             // not a physical address: need to look up pte
             AlphaISA::PTE *pte = lookup(AlphaISA::VAddr(req->getVaddr()).vpn(),
diff --git a/src/arch/alpha/tlb.hh b/src/arch/alpha/tlb.hh
index 81719cc48..07d01fa5c 100644
--- a/src/arch/alpha/tlb.hh
+++ b/src/arch/alpha/tlb.hh
@@ -41,7 +41,7 @@
 #include "mem/request.hh"
 #include "sim/sim_object.hh"
 
-class ExecContext;
+class ThreadContext;
 
 class AlphaTLB : public SimObject
 {
@@ -95,7 +95,7 @@ class AlphaITB : public AlphaTLB
     AlphaITB(const std::string &name, int size);
     virtual void regStats();
 
-    Fault translate(RequestPtr &req, ExecContext *xc) const;
+    Fault translate(RequestPtr &req, ThreadContext *tc) const;
 };
 
 class AlphaDTB : public AlphaTLB
@@ -118,7 +118,7 @@ class AlphaDTB : public AlphaTLB
     AlphaDTB(const std::string &name, int size);
     virtual void regStats();
 
-    Fault translate(RequestPtr &req, ExecContext *xc, bool write) const;
+    Fault translate(RequestPtr &req, ThreadContext *tc, bool write) const;
 };
 
 #endif // __ALPHA_MEMORY_HH__
diff --git a/src/arch/alpha/tru64/process.cc b/src/arch/alpha/tru64/process.cc
index d2d148cc6..82e44b9e7 100644
--- a/src/arch/alpha/tru64/process.cc
+++ b/src/arch/alpha/tru64/process.cc
@@ -33,7 +33,7 @@
 #include "arch/alpha/isa_traits.hh"
 #include "arch/alpha/tru64/process.hh"
 
-#include "cpu/exec_context.hh"
+#include "cpu/thread_context.hh"
 #include "kern/tru64/tru64.hh"
 
 #include "sim/process.hh"
@@ -45,9 +45,9 @@ using namespace AlphaISA;
 /// Target uname() handler.
 static SyscallReturn
 unameFunc(SyscallDesc *desc, int callnum, Process *process,
-          ExecContext *xc)
+          ThreadContext *tc)
 {
-    TypedBufferArg<AlphaTru64::utsname> name(xc->getSyscallArg(0));
+    TypedBufferArg<AlphaTru64::utsname> name(tc->getSyscallArg(0));
 
     strcpy(name->sysname, "OSF1");
     strcpy(name->nodename, "m5.eecs.umich.edu");
@@ -55,43 +55,43 @@ unameFunc(SyscallDesc *desc, int callnum, Process *process,
     strcpy(name->version, "732");
     strcpy(name->machine, "alpha");
 
-    name.copyOut(xc->getMemPort());
+    name.copyOut(tc->getMemPort());
     return 0;
 }
 
 /// Target getsysyinfo() handler.
 static SyscallReturn
 getsysinfoFunc(SyscallDesc *desc, int callnum, Process *process,
-               ExecContext *xc)
+               ThreadContext *tc)
 {
-    unsigned op = xc->getSyscallArg(0);
-    unsigned nbytes = xc->getSyscallArg(2);
+    unsigned op = tc->getSyscallArg(0);
+    unsigned nbytes = tc->getSyscallArg(2);
 
     switch (op) {
 
       case AlphaTru64::GSI_MAX_CPU: {
-          TypedBufferArg<uint32_t> max_cpu(xc->getSyscallArg(1));
+          TypedBufferArg<uint32_t> max_cpu(tc->getSyscallArg(1));
           *max_cpu = htog((uint32_t)process->numCpus());
-          max_cpu.copyOut(xc->getMemPort());
+          max_cpu.copyOut(tc->getMemPort());
           return 1;
       }
 
       case AlphaTru64::GSI_CPUS_IN_BOX: {
-          TypedBufferArg<uint32_t> cpus_in_box(xc->getSyscallArg(1));
+          TypedBufferArg<uint32_t> cpus_in_box(tc->getSyscallArg(1));
           *cpus_in_box = htog((uint32_t)process->numCpus());
-          cpus_in_box.copyOut(xc->getMemPort());
+          cpus_in_box.copyOut(tc->getMemPort());
           return 1;
       }
 
       case AlphaTru64::GSI_PHYSMEM: {
-          TypedBufferArg<uint64_t> physmem(xc->getSyscallArg(1));
+          TypedBufferArg<uint64_t> physmem(tc->getSyscallArg(1));
           *physmem = htog((uint64_t)1024 * 1024);	// physical memory in KB
-          physmem.copyOut(xc->getMemPort());
+          physmem.copyOut(tc->getMemPort());
           return 1;
       }
 
       case AlphaTru64::GSI_CPU_INFO: {
-          TypedBufferArg<AlphaTru64::cpu_info> infop(xc->getSyscallArg(1));
+          TypedBufferArg<AlphaTru64::cpu_info> infop(tc->getSyscallArg(1));
 
           infop->current_cpu = htog(0);
           infop->cpus_in_box = htog(process->numCpus());
@@ -103,30 +103,30 @@ getsysinfoFunc(SyscallDesc *desc, int callnum, Process *process,
           infop->cpu_ex_binding = htog(0);
           infop->mhz = htog(667);
 
-          infop.copyOut(xc->getMemPort());
+          infop.copyOut(tc->getMemPort());
           return 1;
       }
 
       case AlphaTru64::GSI_PROC_TYPE: {
-          TypedBufferArg<uint64_t> proc_type(xc->getSyscallArg(1));
+          TypedBufferArg<uint64_t> proc_type(tc->getSyscallArg(1));
           *proc_type = htog((uint64_t)11);
-          proc_type.copyOut(xc->getMemPort());
+          proc_type.copyOut(tc->getMemPort());
           return 1;
       }
 
       case AlphaTru64::GSI_PLATFORM_NAME: {
-          BufferArg bufArg(xc->getSyscallArg(1), nbytes);
+          BufferArg bufArg(tc->getSyscallArg(1), nbytes);
           strncpy((char *)bufArg.bufferPtr(),
                   "COMPAQ Professional Workstation XP1000",
                   nbytes);
-          bufArg.copyOut(xc->getMemPort());
+          bufArg.copyOut(tc->getMemPort());
           return 1;
       }
 
       case AlphaTru64::GSI_CLK_TCK: {
-          TypedBufferArg<uint64_t> clk_hz(xc->getSyscallArg(1));
+          TypedBufferArg<uint64_t> clk_hz(tc->getSyscallArg(1));
           *clk_hz = htog((uint64_t)1024);
-          clk_hz.copyOut(xc->getMemPort());
+          clk_hz.copyOut(tc->getMemPort());
           return 1;
       }
 
@@ -141,14 +141,14 @@ getsysinfoFunc(SyscallDesc *desc, int callnum, Process *process,
 /// Target setsysyinfo() handler.
 static SyscallReturn
 setsysinfoFunc(SyscallDesc *desc, int callnum, Process *process,
-               ExecContext *xc)
+               ThreadContext *tc)
 {
-    unsigned op = xc->getSyscallArg(0);
+    unsigned op = tc->getSyscallArg(0);
 
     switch (op) {
       case AlphaTru64::SSI_IEEE_FP_CONTROL:
         warn("setsysinfo: ignoring ieee_set_fp_control() arg 0x%x\n",
-             xc->getSyscallArg(1));
+             tc->getSyscallArg(1));
         break;
 
       default:
@@ -163,22 +163,22 @@ setsysinfoFunc(SyscallDesc *desc, int callnum, Process *process,
 /// Target table() handler.
 static
 SyscallReturn tableFunc(SyscallDesc *desc, int callnum,Process *process,
-                        ExecContext *xc)
+                        ThreadContext *tc)
 {
     using namespace std;
     using namespace TheISA;
 
-    int id = xc->getSyscallArg(0);		// table ID
-    int index = xc->getSyscallArg(1);	// index into table
+    int id = tc->getSyscallArg(0);		// table ID
+    int index = tc->getSyscallArg(1);	// index into table
     // arg 2 is buffer pointer; type depends on table ID
-    int nel = xc->getSyscallArg(3);		// number of elements
-    int lel = xc->getSyscallArg(4);		// expected element size
+    int nel = tc->getSyscallArg(3);		// number of elements
+    int lel = tc->getSyscallArg(4);		// expected element size
 
     switch (id) {
       case AlphaTru64::TBL_SYSINFO: {
           if (index != 0 || nel != 1 || lel != sizeof(Tru64::tbl_sysinfo))
               return -EINVAL;
-          TypedBufferArg<Tru64::tbl_sysinfo> elp(xc->getSyscallArg(2));
+          TypedBufferArg<Tru64::tbl_sysinfo> elp(tc->getSyscallArg(2));
 
           const int clk_hz = one_million;
           elp->si_user = htog(curTick / (Clock::Frequency / clk_hz));
@@ -190,7 +190,7 @@ SyscallReturn tableFunc(SyscallDesc *desc, int callnum,Process *process,
           elp->si_phz = htog(clk_hz);
           elp->si_boottime = htog(seconds_since_epoch); // seconds since epoch?
           elp->si_max_procs = htog(process->numCpus());
-          elp.copyOut(xc->getMemPort());
+          elp.copyOut(tc->getMemPort());
           return 0;
       }
 
diff --git a/src/arch/alpha/tru64/system.cc b/src/arch/alpha/tru64/system.cc
index 13e5c36db..8d9a53273 100644
--- a/src/arch/alpha/tru64/system.cc
+++ b/src/arch/alpha/tru64/system.cc
@@ -35,7 +35,7 @@
 #include "base/loader/symtab.hh"
 #include "base/trace.hh"
 #include "cpu/base.hh"
-#include "cpu/exec_context.hh"
+#include "cpu/thread_context.hh"
 #include "kern/tru64/tru64_events.hh"
 #include "kern/system_events.hh"
 #include "mem/physical.hh"
diff --git a/src/arch/alpha/tru64/system.hh b/src/arch/alpha/tru64/system.hh
index 7f64d1042..947e92f50 100644
--- a/src/arch/alpha/tru64/system.hh
+++ b/src/arch/alpha/tru64/system.hh
@@ -36,7 +36,7 @@
 #include "arch/isa_traits.hh"
 #include "sim/system.hh"
 
-class ExecContext;
+class ThreadContext;
 
 class BreakPCEvent;
 class BadAddrEvent;
diff --git a/src/arch/alpha/utility.hh b/src/arch/alpha/utility.hh
index a94742320..ec136091c 100644
--- a/src/arch/alpha/utility.hh
+++ b/src/arch/alpha/utility.hh
@@ -109,10 +109,10 @@ namespace AlphaISA
 
     /**
      * Function to insure ISA semantics about 0 registers.
-     * @param xc The execution context.
+     * @param tc The thread context.
      */
-    template <class XC>
-    void zeroRegisters(XC *xc);
+    template <class TC>
+    void zeroRegisters(TC *tc);
 
 #if FULL_SYSTEM
     // Alpha IPR register accessors
@@ -143,15 +143,15 @@ namespace AlphaISA
     RoundPage(Addr addr)
     { return (addr + PageBytes - 1) & ~(PageBytes - 1); }
 
-    void initCPU(ExecContext *xc, int cpuId);
-    void initIPRs(ExecContext *xc, int cpuId);
+    void initCPU(ThreadContext *tc, int cpuId);
+    void initIPRs(ThreadContext *tc, int cpuId);
 
     /**
      * Function to check for and process any interrupts.
-     * @param xc The execution context.
+     * @param tc The thread context.
      */
-    template <class XC>
-    void processInterrupts(XC *xc);
+    template <class TC>
+    void processInterrupts(TC *tc);
 #endif
 
 } // namespace AlphaISA
diff --git a/src/arch/alpha/vtophys.cc b/src/arch/alpha/vtophys.cc
index 0c69ea0a9..f7fd92c15 100644
--- a/src/arch/alpha/vtophys.cc
+++ b/src/arch/alpha/vtophys.cc
@@ -36,7 +36,7 @@
 #include "arch/alpha/vtophys.hh"
 #include "base/chunk_generator.hh"
 #include "base/trace.hh"
-#include "cpu/exec_context.hh"
+#include "cpu/thread_context.hh"
 #include "mem/vport.hh"
 
 using namespace std;
@@ -85,10 +85,10 @@ AlphaISA::vtophys(Addr vaddr)
 }
 
 Addr
-AlphaISA::vtophys(ExecContext *xc, Addr addr)
+AlphaISA::vtophys(ThreadContext *tc, Addr addr)
 {
     AlphaISA::VAddr vaddr = addr;
-    Addr ptbr = xc->readMiscReg(AlphaISA::IPR_PALtemp20);
+    Addr ptbr = tc->readMiscReg(AlphaISA::IPR_PALtemp20);
     Addr paddr = 0;
     //@todo Andrew couldn't remember why he commented some of this code
     //so I put it back in. Perhaps something to do with gdb debugging?
@@ -101,7 +101,7 @@ AlphaISA::vtophys(ExecContext *xc, Addr addr)
             paddr = vaddr;
         } else {
             AlphaISA::PageTableEntry pte =
-                kernel_pte_lookup(xc->getPhysPort(), ptbr, vaddr);
+                kernel_pte_lookup(tc->getPhysPort(), ptbr, vaddr);
             if (pte.valid())
                 paddr = pte.paddr() | vaddr.offset();
         }
@@ -115,52 +115,52 @@ AlphaISA::vtophys(ExecContext *xc, Addr addr)
 
 
 void
-AlphaISA::CopyOut(ExecContext *xc, void *dest, Addr src, size_t cplen)
+AlphaISA::CopyOut(ThreadContext *tc, void *dest, Addr src, size_t cplen)
 {
     uint8_t *dst = (uint8_t *)dest;
-    VirtualPort *vp = xc->getVirtPort(xc);
+    VirtualPort *vp = tc->getVirtPort(tc);
 
     vp->readBlob(src, dst, cplen);
 
-    xc->delVirtPort(vp);
+    tc->delVirtPort(vp);
 
 }
 
 void
-AlphaISA::CopyIn(ExecContext *xc, Addr dest, void *source, size_t cplen)
+AlphaISA::CopyIn(ThreadContext *tc, Addr dest, void *source, size_t cplen)
 {
     uint8_t *src = (uint8_t *)source;
-    VirtualPort *vp = xc->getVirtPort(xc);
+    VirtualPort *vp = tc->getVirtPort(tc);
 
     vp->writeBlob(dest, src, cplen);
 
-    xc->delVirtPort(vp);
+    tc->delVirtPort(vp);
 }
 
 void
-AlphaISA::CopyStringOut(ExecContext *xc, char *dst, Addr vaddr, size_t maxlen)
+AlphaISA::CopyStringOut(ThreadContext *tc, char *dst, Addr vaddr, size_t maxlen)
 {
     int len = 0;
-    VirtualPort *vp = xc->getVirtPort(xc);
+    VirtualPort *vp = tc->getVirtPort(tc);
 
     do {
         vp->readBlob(vaddr++, (uint8_t*)dst++, 1);
         len++;
     } while (len < maxlen && dst[len] != 0 );
 
-    xc->delVirtPort(vp);
+    tc->delVirtPort(vp);
     dst[len] = 0;
 }
 
 void
-AlphaISA::CopyStringIn(ExecContext *xc, char *src, Addr vaddr)
+AlphaISA::CopyStringIn(ThreadContext *tc, char *src, Addr vaddr)
 {
-    VirtualPort *vp = xc->getVirtPort(xc);
+    VirtualPort *vp = tc->getVirtPort(tc);
     for (ChunkGenerator gen(vaddr, strlen(src), AlphaISA::PageBytes); !gen.done();
             gen.next())
     {
         vp->writeBlob(gen.addr(), (uint8_t*)src, gen.size());
         src += gen.size();
     }
-    xc->delVirtPort(vp);
+    tc->delVirtPort(vp);
 }
diff --git a/src/arch/alpha/vtophys.hh b/src/arch/alpha/vtophys.hh
index 57782a87a..472c694ff 100644
--- a/src/arch/alpha/vtophys.hh
+++ b/src/arch/alpha/vtophys.hh
@@ -34,7 +34,7 @@
 
 #include "arch/alpha/isa_traits.hh"
 
-class ExecContext;
+class ThreadContext;
 class FunctionalPort;
 
 namespace AlphaISA {
@@ -43,12 +43,12 @@ PageTableEntry
 kernel_pte_lookup(FunctionalPort *mem, Addr ptbr, AlphaISA::VAddr vaddr);
 
 Addr vtophys(Addr vaddr);
-Addr vtophys(ExecContext *xc, Addr vaddr);
+Addr vtophys(ThreadContext *tc, Addr vaddr);
 
-void CopyOut(ExecContext *xc, void *dst, Addr src, size_t len);
-void CopyIn(ExecContext *xc, Addr dst, void *src, size_t len);
-void CopyStringOut(ExecContext *xc, char *dst, Addr vaddr, size_t maxlen);
-void CopyStringIn(ExecContext *xc, char *src, Addr vaddr);
+void CopyOut(ThreadContext *tc, void *dst, Addr src, size_t len);
+void CopyIn(ThreadContext *tc, Addr dst, void *src, size_t len);
+void CopyStringOut(ThreadContext *tc, char *dst, Addr vaddr, size_t maxlen);
+void CopyStringIn(ThreadContext *tc, char *src, Addr vaddr);
 
 };
 #endif // __ARCH_ALPHA_VTOPHYS_H__
diff --git a/src/arch/mips/faults.cc b/src/arch/mips/faults.cc
index fa7275908..810c3fed4 100644
--- a/src/arch/mips/faults.cc
+++ b/src/arch/mips/faults.cc
@@ -29,7 +29,7 @@
  */
 
 #include "arch/mips/faults.hh"
-#include "cpu/exec_context.hh"
+#include "cpu/thread_context.hh"
 #include "cpu/base.hh"
 #include "base/trace.hh"
 
@@ -102,28 +102,28 @@ FaultStat IntegerOverflowFault::_count;
 
 #if FULL_SYSTEM
 
-void MipsFault::invoke(ExecContext * xc)
+void MipsFault::invoke(ThreadContext * tc)
 {
-    FaultBase::invoke(xc);
+    FaultBase::invoke(tc);
     countStat()++;
 
     // exception restart address
-    if (setRestartAddress() || !xc->inPalMode())
-        xc->setMiscReg(MipsISA::IPR_EXC_ADDR, xc->readPC());
+    if (setRestartAddress() || !tc->inPalMode())
+        tc->setMiscReg(MipsISA::IPR_EXC_ADDR, tc->readPC());
 
     if (skipFaultingInstruction()) {
         // traps...  skip faulting instruction.
-        xc->setMiscReg(MipsISA::IPR_EXC_ADDR,
-                   xc->readMiscReg(MipsISA::IPR_EXC_ADDR) + 4);
+        tc->setMiscReg(MipsISA::IPR_EXC_ADDR,
+                   tc->readMiscReg(MipsISA::IPR_EXC_ADDR) + 4);
     }
 
-    xc->setPC(xc->readMiscReg(MipsISA::IPR_PAL_BASE) + vect());
-    xc->setNextPC(xc->readPC() + sizeof(MachInst));
+    tc->setPC(tc->readMiscReg(MipsISA::IPR_PAL_BASE) + vect());
+    tc->setNextPC(tc->readPC() + sizeof(MachInst));
 }
 
-void ArithmeticFault::invoke(ExecContext * xc)
+void ArithmeticFault::invoke(ThreadContext * tc)
 {
-    FaultBase::invoke(xc);
+    FaultBase::invoke(tc);
     panic("Arithmetic traps are unimplemented!");
 }
 
diff --git a/src/arch/mips/faults.hh b/src/arch/mips/faults.hh
index 134fa2c4e..d8bf59cc1 100644
--- a/src/arch/mips/faults.hh
+++ b/src/arch/mips/faults.hh
@@ -47,7 +47,7 @@ class MipsFault : public FaultBase
     virtual bool setRestartAddress() {return true;}
   public:
 #if FULL_SYSTEM
-    void invoke(ExecContext * xc);
+    void invoke(ThreadContext * tc);
 #endif
     virtual FaultVect vect() = 0;
     virtual FaultStat & countStat() = 0;
@@ -114,7 +114,7 @@ class ArithmeticFault : public MipsFault
     FaultVect vect() {return _vect;}
     FaultStat & countStat() {return _count;}
 #if FULL_SYSTEM
-    void invoke(ExecContext * xc);
+    void invoke(ThreadContext * tc);
 #endif
 };
 
diff --git a/src/arch/mips/isa_traits.cc b/src/arch/mips/isa_traits.cc
index f577a1c94..056c8baff 100644
--- a/src/arch/mips/isa_traits.cc
+++ b/src/arch/mips/isa_traits.cc
@@ -40,7 +40,7 @@ using namespace std;
 
 
 void
-MipsISA::copyRegs(ExecContext *src, ExecContext *dest)
+MipsISA::copyRegs(ThreadContext *src, ThreadContext *dest)
 {
     /*fpcr = xc->readMiscReg(MipsISA::Fpcr_DepTag);
     uniq = xc->readMiscReg(MipsISA::Uniq_DepTag);
@@ -53,7 +53,7 @@ MipsISA::copyRegs(ExecContext *src, ExecContext *dest)
 }
 
 void
-MipsISA::MiscRegFile::copyMiscRegs(ExecContext *xc)
+MipsISA::MiscRegFile::copyMiscRegs(ThreadContext *tc)
 {
     /*fpcr = xc->readMiscReg(MipsISA::Fpcr_DepTag);
     uniq = xc->readMiscReg(MipsISA::Uniq_DepTag);
diff --git a/src/arch/mips/isa_traits.hh b/src/arch/mips/isa_traits.hh
index e99bc7395..dc8b6758a 100644
--- a/src/arch/mips/isa_traits.hh
+++ b/src/arch/mips/isa_traits.hh
@@ -48,7 +48,7 @@
 class FastCPU;
 class FullCPU;
 class Checkpoint;
-class ExecContext;
+class ThreadContext;
 
 namespace LittleEndianGuest {};
 
@@ -131,14 +131,14 @@ namespace MipsISA
 
     /**
      * Function to insure ISA semantics about 0 registers.
-     * @param xc The execution context.
+     * @param tc The thread context.
      */
-    template <class XC>
-    void zeroRegisters(XC *xc);
+    template <class TC>
+    void zeroRegisters(TC *tc);
 
     const Addr MaxAddr = (Addr)-1;
 
-    void copyRegs(ExecContext *src, ExecContext *dest);
+    void copyRegs(ThreadContext *src, ThreadContext *dest);
 
     uint64_t fpConvert(double fp_val, ConvertType cvt_type);
     double roundFP(double val, int digits);
diff --git a/src/arch/mips/linux/process.cc b/src/arch/mips/linux/process.cc
index 1408dbac0..4a919ac27 100644
--- a/src/arch/mips/linux/process.cc
+++ b/src/arch/mips/linux/process.cc
@@ -33,7 +33,7 @@
 #include "arch/mips/isa_traits.hh"
 
 #include "base/trace.hh"
-#include "cpu/exec_context.hh"
+#include "cpu/thread_context.hh"
 #include "kern/linux/linux.hh"
 
 #include "sim/process.hh"
@@ -45,9 +45,9 @@ using namespace MipsISA;
 /// Target uname() handler.
 static SyscallReturn
 unameFunc(SyscallDesc *desc, int callnum, Process *process,
-          ExecContext *xc)
+          ThreadContext *tc)
 {
-    TypedBufferArg<Linux::utsname> name(xc->getSyscallArg(0));
+    TypedBufferArg<Linux::utsname> name(tc->getSyscallArg(0));
 
     strcpy(name->sysname, "Linux");
     strcpy(name->nodename, "m5.eecs.umich.edu");
@@ -55,7 +55,7 @@ unameFunc(SyscallDesc *desc, int callnum, Process *process,
     strcpy(name->version, "#1 Mon Aug 18 11:32:15 EDT 2003");
     strcpy(name->machine, "mips");
 
-    name.copyOut(xc->getMemPort());
+    name.copyOut(tc->getMemPort());
     return 0;
 }
 
@@ -64,18 +64,18 @@ unameFunc(SyscallDesc *desc, int callnum, Process *process,
 /// different in practice from those used by Tru64 processes.
 static SyscallReturn
 sys_getsysinfoFunc(SyscallDesc *desc, int callnum, Process *process,
-                   ExecContext *xc)
+                   ThreadContext *tc)
 {
-    unsigned op = xc->getSyscallArg(0);
-    // unsigned nbytes = xc->getSyscallArg(2);
+    unsigned op = tc->getSyscallArg(0);
+    // unsigned nbytes = tc->getSyscallArg(2);
 
     switch (op) {
 
       case 45: { // GSI_IEEE_FP_CONTROL
-          TypedBufferArg<uint64_t> fpcr(xc->getSyscallArg(1));
+          TypedBufferArg<uint64_t> fpcr(tc->getSyscallArg(1));
           // I don't think this exactly matches the HW FPCR
           *fpcr = 0;
-          fpcr.copyOut(xc->getMemPort());
+          fpcr.copyOut(tc->getMemPort());
           return 0;
       }
 
@@ -91,17 +91,17 @@ sys_getsysinfoFunc(SyscallDesc *desc, int callnum, Process *process,
 /// Target sys_setsysinfo() handler.
 static SyscallReturn
 sys_setsysinfoFunc(SyscallDesc *desc, int callnum, Process *process,
-                   ExecContext *xc)
+                   ThreadContext *tc)
 {
-    unsigned op = xc->getSyscallArg(0);
-    // unsigned nbytes = xc->getSyscallArg(2);
+    unsigned op = tc->getSyscallArg(0);
+    // unsigned nbytes = tc->getSyscallArg(2);
 
     switch (op) {
 
       case 14: { // SSI_IEEE_FP_CONTROL
-          TypedBufferArg<uint64_t> fpcr(xc->getSyscallArg(1));
+          TypedBufferArg<uint64_t> fpcr(tc->getSyscallArg(1));
           // I don't think this exactly matches the HW FPCR
-          fpcr.copyIn(xc->getMemPort());
+          fpcr.copyIn(tc->getMemPort());
           DPRINTFR(SyscallVerbose, "sys_setsysinfo(SSI_IEEE_FP_CONTROL): "
                    " setting FPCR to 0x%x\n", gtoh(*(uint64_t*)fpcr));
           return 0;
diff --git a/src/arch/mips/process.cc b/src/arch/mips/process.cc
index 13d8ac3a8..bd7aa394e 100644
--- a/src/arch/mips/process.cc
+++ b/src/arch/mips/process.cc
@@ -34,7 +34,7 @@
 #include "arch/mips/linux/process.hh"
 #include "base/loader/object_file.hh"
 #include "base/misc.hh"
-#include "cpu/exec_context.hh"
+#include "cpu/thread_context.hh"
 #include "sim/builder.hh"
 #include "sim/system.hh"
 
diff --git a/src/arch/mips/regfile/float_regfile.hh b/src/arch/mips/regfile/float_regfile.hh
index 3781a91f3..013aa01c7 100644
--- a/src/arch/mips/regfile/float_regfile.hh
+++ b/src/arch/mips/regfile/float_regfile.hh
@@ -40,7 +40,7 @@
 #include "sim/host.hh"
 
 class Checkpoint;
-class ExecContext;
+class ThreadContext;
 class Regfile;
 
 namespace MipsISA
diff --git a/src/arch/mips/regfile/int_regfile.hh b/src/arch/mips/regfile/int_regfile.hh
index 2a0db38a4..dc82a3c26 100644
--- a/src/arch/mips/regfile/int_regfile.hh
+++ b/src/arch/mips/regfile/int_regfile.hh
@@ -37,7 +37,7 @@
 #include "sim/faults.hh"
 
 class Checkpoint;
-class ExecContext;
+class ThreadContext;
 class Regfile;
 
 namespace MipsISA
diff --git a/src/arch/mips/regfile/misc_regfile.hh b/src/arch/mips/regfile/misc_regfile.hh
index 72aa17424..f8aeab8cb 100644
--- a/src/arch/mips/regfile/misc_regfile.hh
+++ b/src/arch/mips/regfile/misc_regfile.hh
@@ -36,7 +36,7 @@
 #include "sim/faults.hh"
 
 class Checkpoint;
-class ExecContext;
+class ThreadContext;
 class Regfile;
 
 namespace MipsISA
@@ -57,14 +57,14 @@ namespace MipsISA
         int getInstAsid();
         int getDataAsid();
 
-        void copyMiscRegs(ExecContext *xc);
+        void copyMiscRegs(ThreadContext *tc);
 
         MiscReg readReg(int misc_reg)
         {
             return miscRegFile[misc_reg];
         }
 
-        MiscReg readRegWithEffect(int misc_reg, Fault &fault, ExecContext *xc)
+        MiscReg readRegWithEffect(int misc_reg, Fault &fault, ThreadContext *tc)
         {
             return miscRegFile[misc_reg];
         }
@@ -75,7 +75,7 @@ namespace MipsISA
         }
 
         Fault setRegWithEffect(int misc_reg, const MiscReg &val,
-                               ExecContext *xc)
+                               ThreadContext *tc)
         {
             miscRegFile[misc_reg] = val; return NoFault;
         }
@@ -87,9 +87,9 @@ namespace MipsISA
         InternalProcReg ipr[NumInternalProcRegs]; // Internal processor regs
 
       private:
-        MiscReg readIpr(int idx, Fault &fault, ExecContext *xc) { }
+        MiscReg readIpr(int idx, Fault &fault, ThreadContext *tc) { }
 
-        Fault setIpr(int idx, uint64_t val, ExecContext *xc) { }
+        Fault setIpr(int idx, uint64_t val, ThreadContext *tc) { }
 #endif
         friend class RegFile;
     };
diff --git a/src/arch/mips/regfile/regfile.hh b/src/arch/mips/regfile/regfile.hh
index e1b834568..af61e62cd 100644
--- a/src/arch/mips/regfile/regfile.hh
+++ b/src/arch/mips/regfile/regfile.hh
@@ -39,7 +39,7 @@
 #include "sim/faults.hh"
 
 class Checkpoint;
-class ExecContext;
+class ThreadContext;
 
 namespace MipsISA
 {
@@ -64,10 +64,10 @@ namespace MipsISA
         }
 
         MiscReg readMiscRegWithEffect(int miscReg,
-                Fault &fault, ExecContext *xc)
+                Fault &fault, ThreadContext *tc)
         {
             fault = NoFault;
-            return miscRegFile.readRegWithEffect(miscReg, fault, xc);
+            return miscRegFile.readRegWithEffect(miscReg, fault, tc);
         }
 
         Fault setMiscReg(int miscReg, const MiscReg &val)
@@ -76,9 +76,9 @@ namespace MipsISA
         }
 
         Fault setMiscRegWithEffect(int miscReg, const MiscReg &val,
-                ExecContext * xc)
+                ThreadContext * tc)
         {
-            return miscRegFile.setRegWithEffect(miscReg, val, xc);
+            return miscRegFile.setRegWithEffect(miscReg, val, tc);
         }
 
         FloatReg readFloatReg(int floatReg)
@@ -189,12 +189,12 @@ namespace MipsISA
         }
     };
 
-    void copyRegs(ExecContext *src, ExecContext *dest);
+    void copyRegs(ThreadContext *src, ThreadContext *dest);
 
-    void copyMiscRegs(ExecContext *src, ExecContext *dest);
+    void copyMiscRegs(ThreadContext *src, ThreadContext *dest);
 
 #if FULL_SYSTEM
-    void copyIprs(ExecContext *src, ExecContext *dest);
+    void copyIprs(ThreadContext *src, ThreadContext *dest);
 #endif
 } // namespace MipsISA
 
diff --git a/src/arch/mips/stacktrace.hh b/src/arch/mips/stacktrace.hh
index 3516b1d19..38767cef7 100644
--- a/src/arch/mips/stacktrace.hh
+++ b/src/arch/mips/stacktrace.hh
@@ -34,13 +34,13 @@
 #include "base/trace.hh"
 #include "cpu/static_inst.hh"
 
-class ExecContext;
+class ThreadContext;
 class StackTrace;
 
 class ProcessInfo
 {
   private:
-    ExecContext *xc;
+    ThreadContext *tc;
 
     int thread_info_size;
     int task_struct_size;
@@ -49,7 +49,7 @@ class ProcessInfo
     int name_off;
 
   public:
-    ProcessInfo(ExecContext *_xc);
+    ProcessInfo(ThreadContext *_tc);
 
     Addr task(Addr ksp) const;
     int pid(Addr ksp) const;
@@ -61,7 +61,7 @@ class StackTrace
   protected:
     typedef TheISA::MachInst MachInst;
   private:
-    ExecContext *xc;
+    ThreadContext *tc;
     std::vector<Addr> stack;
 
   private:
@@ -70,21 +70,21 @@ class StackTrace
     bool decodeSave(MachInst inst, int &reg, int &disp);
     bool decodeStack(MachInst inst, int &disp);
 
-    void trace(ExecContext *xc, bool is_call);
+    void trace(ThreadContext *tc, bool is_call);
 
   public:
     StackTrace();
-    StackTrace(ExecContext *xc, StaticInstPtr inst);
+    StackTrace(ThreadContext *tc, StaticInstPtr inst);
     ~StackTrace();
 
     void clear()
     {
-        xc = 0;
+        tc = 0;
         stack.clear();
     }
 
-    bool valid() const { return xc != NULL; }
-    bool trace(ExecContext *xc, StaticInstPtr inst);
+    bool valid() const { return tc != NULL; }
+    bool trace(ThreadContext *tc, StaticInstPtr inst);
 
   public:
     const std::vector<Addr> &getstack() const { return stack; }
@@ -106,7 +106,7 @@ class StackTrace
 };
 
 inline bool
-StackTrace::trace(ExecContext *xc, StaticInstPtr inst)
+StackTrace::trace(ThreadContext *tc, StaticInstPtr inst)
 {
     if (!inst->isCall() && !inst->isReturn())
         return false;
@@ -114,7 +114,7 @@ StackTrace::trace(ExecContext *xc, StaticInstPtr inst)
     if (valid())
         clear();
 
-    trace(xc, !inst->isReturn());
+    trace(tc, !inst->isReturn());
     return true;
 }
 
diff --git a/src/arch/sparc/faults.cc b/src/arch/sparc/faults.cc
index 09fdf230a..57b4d4d86 100644
--- a/src/arch/sparc/faults.cc
+++ b/src/arch/sparc/faults.cc
@@ -30,7 +30,7 @@
  */
 
 #include "arch/sparc/faults.hh"
-#include "cpu/exec_context.hh"
+#include "cpu/thread_context.hh"
 #include "cpu/base.hh"
 #include "base/trace.hh"
 
@@ -220,36 +220,36 @@ FaultStat     TrapInstruction::_count;
 
 #if FULL_SYSTEM
 
-void SparcFault::invoke(ExecContext * xc)
+void SparcFault::invoke(ThreadContext * tc)
 {
-    FaultBase::invoke(xc);
+    FaultBase::invoke(tc);
     countStat()++;
 
     //Use the SPARC trap state machine
     /*// exception restart address
-    if (setRestartAddress() || !xc->inPalMode())
-        xc->setMiscReg(AlphaISA::IPR_EXC_ADDR, xc->regs.pc);
+    if (setRestartAddress() || !tc->inPalMode())
+        tc->setMiscReg(AlphaISA::IPR_EXC_ADDR, tc->regs.pc);
 
     if (skipFaultingInstruction()) {
         // traps...  skip faulting instruction.
-        xc->setMiscReg(AlphaISA::IPR_EXC_ADDR,
-                   xc->readMiscReg(AlphaISA::IPR_EXC_ADDR) + 4);
+        tc->setMiscReg(AlphaISA::IPR_EXC_ADDR,
+                   tc->readMiscReg(AlphaISA::IPR_EXC_ADDR) + 4);
     }
 
-    if (!xc->inPalMode())
-        AlphaISA::swap_palshadow(&(xc->regs), true);
+    if (!tc->inPalMode())
+        AlphaISA::swap_palshadow(&(tc->regs), true);
 
-    xc->regs.pc = xc->readMiscReg(AlphaISA::IPR_PAL_BASE) + vect();
-    xc->regs.npc = xc->regs.pc + sizeof(MachInst);*/
+    tc->regs.pc = tc->readMiscReg(AlphaISA::IPR_PAL_BASE) + vect();
+    tc->regs.npc = tc->regs.pc + sizeof(MachInst);*/
 }
 
 #endif
 
 #if !FULL_SYSTEM
 
-void TrapInstruction::invoke(ExecContext * xc)
+void TrapInstruction::invoke(ThreadContext * tc)
 {
-    xc->syscall(syscall_num);
+    tc->syscall(syscall_num);
 }
 
 #endif
diff --git a/src/arch/sparc/faults.hh b/src/arch/sparc/faults.hh
index 88efe2eee..9f595a28b 100644
--- a/src/arch/sparc/faults.hh
+++ b/src/arch/sparc/faults.hh
@@ -46,7 +46,7 @@ class SparcFault : public FaultBase
 {
   public:
 #if FULL_SYSTEM
-    void invoke(ExecContext * xc);
+    void invoke(ThreadContext * tc);
 #endif
     virtual TrapType trapType() = 0;
     virtual FaultPriority priority() = 0;
@@ -585,7 +585,7 @@ class TrapInstruction : public EnumeratedFault
     FaultPriority priority() {return _priority;}
     FaultStat & countStat() {return _count;}
 #if !FULL_SYSTEM
-    void invoke(ExecContext * xc);
+    void invoke(ThreadContext * tc);
 #endif
 };
 
diff --git a/src/arch/sparc/isa_traits.hh b/src/arch/sparc/isa_traits.hh
index d4fcbb522..346f7b730 100644
--- a/src/arch/sparc/isa_traits.hh
+++ b/src/arch/sparc/isa_traits.hh
@@ -36,7 +36,7 @@
 #include "config/full_system.hh"
 #include "sim/host.hh"
 
-class ExecContext;
+class ThreadContext;
 class FastCPU;
 //class FullCPU;
 class Checkpoint;
diff --git a/src/arch/sparc/linux/process.cc b/src/arch/sparc/linux/process.cc
index db9a32c28..e27255e67 100644
--- a/src/arch/sparc/linux/process.cc
+++ b/src/arch/sparc/linux/process.cc
@@ -35,7 +35,7 @@
 #include "arch/sparc/regfile.hh"
 
 #include "base/trace.hh"
-#include "cpu/exec_context.hh"
+#include "cpu/thread_context.hh"
 #include "kern/linux/linux.hh"
 
 #include "sim/process.hh"
@@ -48,9 +48,9 @@ using namespace SparcISA;
 /// Target uname() handler.
 static SyscallReturn
 unameFunc(SyscallDesc *desc, int callnum, Process *process,
-          ExecContext *xc)
+          ThreadContext *tc)
 {
-    TypedBufferArg<Linux::utsname> name(xc->getSyscallArg(0));
+    TypedBufferArg<Linux::utsname> name(tc->getSyscallArg(0));
 
     strcpy(name->sysname, "Linux");
     strcpy(name->nodename, "m5.eecs.umich.edu");
@@ -58,40 +58,40 @@ unameFunc(SyscallDesc *desc, int callnum, Process *process,
     strcpy(name->version, "#1 Mon Aug 18 11:32:15 EDT 2003");
     strcpy(name->machine, "sparc");
 
-    name.copyOut(xc->getMemPort());
+    name.copyOut(tc->getMemPort());
 
     return 0;
 }
 
 
 SyscallReturn SparcISA::getresuidFunc(SyscallDesc *desc, int num,
-                                         Process *p, ExecContext *xc)
+                                         Process *p, ThreadContext *tc)
 {
     const IntReg id = htog(100);
-    Addr ruid = xc->getSyscallArg(0);
-    Addr euid = xc->getSyscallArg(1);
-    Addr suid = xc->getSyscallArg(2);
+    Addr ruid = tc->getSyscallArg(0);
+    Addr euid = tc->getSyscallArg(1);
+    Addr suid = tc->getSyscallArg(2);
     //Handle the EFAULT case
     //Set the ruid
     if(ruid)
     {
         BufferArg ruidBuff(ruid, sizeof(IntReg));
         memcpy(ruidBuff.bufferPtr(), &id, sizeof(IntReg));
-        ruidBuff.copyOut(xc->getMemPort());
+        ruidBuff.copyOut(tc->getMemPort());
     }
     //Set the euid
     if(euid)
     {
         BufferArg euidBuff(euid, sizeof(IntReg));
         memcpy(euidBuff.bufferPtr(), &id, sizeof(IntReg));
-        euidBuff.copyOut(xc->getMemPort());
+        euidBuff.copyOut(tc->getMemPort());
     }
     //Set the suid
     if(suid)
     {
         BufferArg suidBuff(suid, sizeof(IntReg));
         memcpy(suidBuff.bufferPtr(), &id, sizeof(IntReg));
-        suidBuff.copyOut(xc->getMemPort());
+        suidBuff.copyOut(tc->getMemPort());
     }
     return 0;
 }
diff --git a/src/arch/sparc/linux/process.hh b/src/arch/sparc/linux/process.hh
index cd59e4fd2..f4819ba84 100644
--- a/src/arch/sparc/linux/process.hh
+++ b/src/arch/sparc/linux/process.hh
@@ -61,7 +61,7 @@ class SparcLinuxProcess : public SparcLiveProcess
 };
 
 SyscallReturn getresuidFunc(SyscallDesc *desc, int num,
-                                 Process *p, ExecContext *xc);
+                                 Process *p, ThreadContext *tc);
 
 } // namespace SparcISA
 #endif // __ALPHA_LINUX_PROCESS_HH__
diff --git a/src/arch/sparc/process.cc b/src/arch/sparc/process.cc
index 4b18dcca9..633c202ca 100644
--- a/src/arch/sparc/process.cc
+++ b/src/arch/sparc/process.cc
@@ -35,7 +35,7 @@
 #include "arch/sparc/solaris/process.hh"
 #include "base/loader/object_file.hh"
 #include "base/misc.hh"
-#include "cpu/exec_context.hh"
+#include "cpu/thread_context.hh"
 #include "mem/page_table.hh"
 #include "mem/translating_port.hh"
 #include "sim/builder.hh"
@@ -113,27 +113,27 @@ SparcLiveProcess::startup()
     //From the SPARC ABI
 
     //The process runs in user mode
-    execContexts[0]->setMiscRegWithEffect(MISCREG_PSTATE, 0x02);
+    threadContexts[0]->setMiscRegWithEffect(MISCREG_PSTATE, 0x02);
 
     //Setup default FP state
-    execContexts[0]->setMiscReg(MISCREG_FSR, 0);
+    threadContexts[0]->setMiscReg(MISCREG_FSR, 0);
 
-    execContexts[0]->setMiscReg(MISCREG_TICK, 0);
+    threadContexts[0]->setMiscReg(MISCREG_TICK, 0);
     //
     /*
      * Register window management registers
      */
 
     //No windows contain info from other programs
-    execContexts[0]->setMiscRegWithEffect(MISCREG_OTHERWIN, 0);
+    threadContexts[0]->setMiscRegWithEffect(MISCREG_OTHERWIN, 0);
     //There are no windows to pop
-    execContexts[0]->setMiscRegWithEffect(MISCREG_CANRESTORE, 0);
+    threadContexts[0]->setMiscRegWithEffect(MISCREG_CANRESTORE, 0);
     //All windows are available to save into
-    execContexts[0]->setMiscRegWithEffect(MISCREG_CANSAVE, NWindows - 2);
+    threadContexts[0]->setMiscRegWithEffect(MISCREG_CANSAVE, NWindows - 2);
     //All windows are "clean"
-    execContexts[0]->setMiscRegWithEffect(MISCREG_CLEANWIN, NWindows);
+    threadContexts[0]->setMiscRegWithEffect(MISCREG_CLEANWIN, NWindows);
     //Start with register window 0
-    execContexts[0]->setMiscRegWithEffect(MISCREG_CWP, 0);
+    threadContexts[0]->setMiscRegWithEffect(MISCREG_CWP, 0);
 }
 
 m5_auxv_t buildAuxVect(int64_t type, int64_t val)
@@ -311,14 +311,14 @@ SparcLiveProcess::argsInit(int intSize, int pageSize)
 
     initVirtMem->writeBlob(argc_base, (uint8_t*)&guestArgc, intSize);
 
-    execContexts[0]->setIntReg(ArgumentReg0, argc);
-    execContexts[0]->setIntReg(ArgumentReg1, argv_array_base);
-    execContexts[0]->setIntReg(StackPointerReg, stack_min - StackBias);
+    threadContexts[0]->setIntReg(ArgumentReg0, argc);
+    threadContexts[0]->setIntReg(ArgumentReg1, argv_array_base);
+    threadContexts[0]->setIntReg(StackPointerReg, stack_min - StackBias);
 
     Addr prog_entry = objFile->entryPoint();
-    execContexts[0]->setPC(prog_entry);
-    execContexts[0]->setNextPC(prog_entry + sizeof(MachInst));
-    execContexts[0]->setNextNPC(prog_entry + (2 * sizeof(MachInst)));
+    threadContexts[0]->setPC(prog_entry);
+    threadContexts[0]->setNextPC(prog_entry + sizeof(MachInst));
+    threadContexts[0]->setNextNPC(prog_entry + (2 * sizeof(MachInst)));
 
 //    num_processes++;
 }
diff --git a/src/arch/sparc/regfile.hh b/src/arch/sparc/regfile.hh
index 2739048eb..aaf1fcf24 100644
--- a/src/arch/sparc/regfile.hh
+++ b/src/arch/sparc/regfile.hh
@@ -563,9 +563,9 @@ namespace SparcISA
 #if FULL_SYSTEM
         /** Process a tick compare event and generate an interrupt on the cpu if
          * appropriate. */
-        void processTickCompare(ExecContext *xc);
-        void processSTickCompare(ExecContext *xc);
-        void processHSTickCompare(ExecContext *xc);
+        void processTickCompare(ThreadContext *tc);
+        void processSTickCompare(ThreadContext *tc);
+        void processHSTickCompare(ThreadContext *tc);
 
         typedef CpuEventWrapper<MiscRegFile,
                 &MiscRegFile::processTickCompare> TickCompareEvent;
@@ -580,10 +580,10 @@ namespace SparcISA
         HSTickCompareEvent *hSTickCompare;
 
         /** Fullsystem only register version of ReadRegWithEffect() */
-        MiscReg readFSRegWithEffect(int miscReg, Fault &fault, ExecContext *xc);
+        MiscReg readFSRegWithEffect(int miscReg, Fault &fault, ThreadContext *tc);
         /** Fullsystem only register version of SetRegWithEffect() */
         Fault setFSRegWithEffect(int miscReg, const MiscReg &val,
-                ExecContext * xc);
+                ThreadContext * tc);
 #endif
       public:
 
@@ -657,7 +657,7 @@ namespace SparcISA
          * are are readFSRegWithEffect (which is called by readRegWithEffect()).
          * Checking is done for permission based on state bits in the miscreg
          * file. */
-        MiscReg readRegWithEffect(int miscReg, Fault &fault, ExecContext *xc);
+        MiscReg readRegWithEffect(int miscReg, Fault &fault, ThreadContext *tc);
 
         /** write a value into an either an SE or FS IPR. No checking is done
          * about SE vs. FS as this is mostly used to copy the regfile. Thus more
@@ -671,13 +671,13 @@ namespace SparcISA
          * Checking is done for permission based on state bits in the miscreg
          * file. */
         Fault setRegWithEffect(int miscReg,
-                const MiscReg &val, ExecContext * xc);
+                const MiscReg &val, ThreadContext * tc);
 
         void serialize(std::ostream & os);
 
         void unserialize(Checkpoint * cp, const std::string & section);
 
-        void copyMiscRegs(ExecContext * xc);
+        void copyMiscRegs(ThreadContext * tc);
 
         bool isHyperPriv() { return hpstateFields.hpriv; }
         bool isPriv() { return hpstateFields.hpriv || pstateFields.priv; }
@@ -753,9 +753,9 @@ namespace SparcISA
         }
 
         MiscReg readMiscRegWithEffect(int miscReg,
-                Fault &fault, ExecContext *xc)
+                Fault &fault, ThreadContext *tc)
         {
-            return miscRegFile.readRegWithEffect(miscReg, fault, xc);
+            return miscRegFile.readRegWithEffect(miscReg, fault, tc);
         }
 
         Fault setMiscReg(int miscReg, const MiscReg &val)
@@ -764,9 +764,9 @@ namespace SparcISA
         }
 
         Fault setMiscRegWithEffect(int miscReg, const MiscReg &val,
-                ExecContext * xc)
+                ThreadContext * tc)
         {
-            return miscRegFile.setRegWithEffect(miscReg, val, xc);
+            return miscRegFile.setRegWithEffect(miscReg, val, tc);
         }
 
         FloatReg readFloatReg(int floatReg, int width)
@@ -853,9 +853,9 @@ namespace SparcISA
         }
     };
 
-    void copyRegs(ExecContext *src, ExecContext *dest);
+    void copyRegs(ThreadContext *src, ThreadContext *dest);
 
-    void copyMiscRegs(ExecContext *src, ExecContext *dest);
+    void copyMiscRegs(ThreadContext *src, ThreadContext *dest);
 
     int InterruptLevel(uint64_t softint);
 
diff --git a/src/arch/sparc/solaris/process.cc b/src/arch/sparc/solaris/process.cc
index 74f77991d..af0550910 100644
--- a/src/arch/sparc/solaris/process.cc
+++ b/src/arch/sparc/solaris/process.cc
@@ -33,7 +33,7 @@
 #include "arch/sparc/regfile.hh"
 
 #include "base/trace.hh"
-#include "cpu/exec_context.hh"
+#include "cpu/thread_context.hh"
 #include "kern/solaris/solaris.hh"
 
 #include "sim/process.hh"
@@ -46,9 +46,9 @@ using namespace SparcISA;
 /// Target uname() handler.
 static SyscallReturn
 unameFunc(SyscallDesc *desc, int callnum, Process *process,
-          ExecContext *xc)
+          ThreadContext *tc)
 {
-    TypedBufferArg<Solaris::utsname> name(xc->getSyscallArg(0));
+    TypedBufferArg<Solaris::utsname> name(tc->getSyscallArg(0));
 
     strcpy(name->sysname, "SunOS");
     strcpy(name->nodename, "m5.eecs.umich.edu");
@@ -56,7 +56,7 @@ unameFunc(SyscallDesc *desc, int callnum, Process *process,
     strcpy(name->version, "Generic_118558-21");
     strcpy(name->machine, "sun4u");
 
-    name.copyOut(xc->getMemPort());
+    name.copyOut(tc->getMemPort());
 
     return 0;
 }
diff --git a/src/arch/sparc/stacktrace.hh b/src/arch/sparc/stacktrace.hh
index dd86a1553..d12aee211 100644
--- a/src/arch/sparc/stacktrace.hh
+++ b/src/arch/sparc/stacktrace.hh
@@ -34,13 +34,13 @@
 #include "base/trace.hh"
 #include "cpu/static_inst.hh"
 
-class ExecContext;
+class ThreadContext;
 class StackTrace;
 
 class ProcessInfo
 {
   private:
-    ExecContext *xc;
+    ThreadContext *tc;
 
     int thread_info_size;
     int task_struct_size;
@@ -49,7 +49,7 @@ class ProcessInfo
     int name_off;
 
   public:
-    ProcessInfo(ExecContext *_xc);
+    ProcessInfo(ThreadContext *_tc);
 
     Addr task(Addr ksp) const;
     int pid(Addr ksp) const;
@@ -61,7 +61,7 @@ class StackTrace
   protected:
     typedef TheISA::MachInst MachInst;
   private:
-    ExecContext *xc;
+    ThreadContext *tc;
     std::vector<Addr> stack;
 
   private:
@@ -70,21 +70,21 @@ class StackTrace
     bool decodeSave(MachInst inst, int &reg, int &disp);
     bool decodeStack(MachInst inst, int &disp);
 
-    void trace(ExecContext *xc, bool is_call);
+    void trace(ThreadContext *tc, bool is_call);
 
   public:
     StackTrace();
-    StackTrace(ExecContext *xc, StaticInstPtr inst);
+    StackTrace(ThreadContext *tc, StaticInstPtr inst);
     ~StackTrace();
 
     void clear()
     {
-        xc = 0;
+        tc = 0;
         stack.clear();
     }
 
-    bool valid() const { return xc != NULL; }
-    bool trace(ExecContext *xc, StaticInstPtr inst);
+    bool valid() const { return tc != NULL; }
+    bool trace(ThreadContext *tc, StaticInstPtr inst);
 
   public:
     const std::vector<Addr> &getstack() const { return stack; }
@@ -106,7 +106,7 @@ class StackTrace
 };
 
 inline bool
-StackTrace::trace(ExecContext *xc, StaticInstPtr inst)
+StackTrace::trace(ThreadContext *tc, StaticInstPtr inst)
 {
     if (!inst->isCall() && !inst->isReturn())
         return false;
@@ -114,7 +114,7 @@ StackTrace::trace(ExecContext *xc, StaticInstPtr inst)
     if (valid())
         clear();
 
-    trace(xc, !inst->isReturn());
+    trace(tc, !inst->isReturn());
     return true;
 }
 
diff --git a/src/arch/sparc/ua2005.cc b/src/arch/sparc/ua2005.cc
index 9f4805058..b89d48663 100644
--- a/src/arch/sparc/ua2005.cc
+++ b/src/arch/sparc/ua2005.cc
@@ -32,7 +32,7 @@
 
 Fault
 SparcISA::MiscRegFile::setFSRegWithEffect(int miscReg, const MiscReg &val,
-        ExecContext *xc)
+        ThreadContext *tc)
 {
     int64_t time;
     SparcSystem *sys;
@@ -47,25 +47,25 @@ SparcISA::MiscRegFile::setFSRegWithEffect(int miscReg, const MiscReg &val,
           setReg(miscReg, val);
           if (newLevel > oldLevel)
               ; // MUST DO SOMETHING HERE TO TELL CPU TO LOOK FOR INTERRUPTS XXX
-              //xc->getCpuPtr()->checkInterrupts = true;
+              //tc->getCpuPtr()->checkInterrupts = true;
           return NoFault;
 
         case MISCREG_SOFTINT_CLR:
-          return setRegWithEffect(miscReg, ~val & softint, xc);
+          return setRegWithEffect(miscReg, ~val & softint, tc);
         case MISCREG_SOFTINT_SET:
-          return setRegWithEffect(miscReg, val | softint, xc);
+          return setRegWithEffect(miscReg, val | softint, tc);
 
         case MISCREG_TICK_CMPR:
           if (isNonPriv())
               return new PrivilegedOpcode;
           if (tickCompare == NULL)
-              tickCompare = new TickCompareEvent(this, xc);
+              tickCompare = new TickCompareEvent(this, tc);
           setReg(miscReg, val);
           if (tick_cmprFields.int_dis && tickCompare.scheduled())
                   tickCompare.deschedule();
           time = tick_cmprFields.tick_cmpr - tickFields.counter;
           if (!tick_cmprFields.int_dis && time > 0)
-              tickCompare.schedule(time * xc->getCpuPtr()->cycles(1));
+              tickCompare.schedule(time * tc->getCpuPtr()->cycles(1));
           return NoFault;
 
         case MISCREG_STICK:
@@ -73,7 +73,7 @@ SparcISA::MiscRegFile::setFSRegWithEffect(int miscReg, const MiscReg &val,
               return new PrivilegedOpcode;
           if (isPriv())
               return new PrivilegedAction;
-          sys = dynamic_cast<SparcSystem*>(xc->getSystemPtr());
+          sys = dynamic_cast<SparcSystem*>(tc->getSystemPtr());
           assert(sys != NULL);
           sys->sysTick = curTick/Clock::Int::ns - val & ~Bit64;
           stickFields.npt = val & Bit64 ? 1 : 0;
@@ -83,8 +83,8 @@ SparcISA::MiscRegFile::setFSRegWithEffect(int miscReg, const MiscReg &val,
           if (isNonPriv())
               return new PrivilegedOpcode;
           if (sTickCompare == NULL)
-              sTickCompare = new STickCompareEvent(this, xc);
-          sys = dynamic_cast<SparcSystem*>(xc->getSystemPtr());
+              sTickCompare = new STickCompareEvent(this, tc);
+          sys = dynamic_cast<SparcSystem*>(tc->getSystemPtr());
           assert(sys != NULL);
           setReg(miscReg, val);
           if (stick_cmprFields.int_dis && sTickCompare.scheduled())
@@ -98,7 +98,7 @@ SparcISA::MiscRegFile::setFSRegWithEffect(int miscReg, const MiscReg &val,
         case MISCREG_PIL:
           if (FULL_SYSTEM) {
               setReg(miscReg, val);
-              //xc->getCpuPtr()->checkInterrupts;
+              //tc->getCpuPtr()->checkInterrupts;
                // MUST DO SOMETHING HERE TO TELL CPU TO LOOK FOR INTERRUPTS XXX
               return NoFault;
           } else
@@ -127,8 +127,8 @@ SparcISA::MiscRegFile::setFSRegWithEffect(int miscReg, const MiscReg &val,
           if (isNonPriv())
               return new PrivilegedOpcode;
           if (hSTickCompare == NULL)
-              hSTickCompare = new HSTickCompareEvent(this, xc);
-          sys = dynamic_cast<SparcSystem*>(xc->getSystemPtr());
+              hSTickCompare = new HSTickCompareEvent(this, tc);
+          sys = dynamic_cast<SparcSystem*>(tc->getSystemPtr());
           assert(sys != NULL);
           setReg(miscReg, val);
           if (hstick_cmprFields.int_dis && hSTickCompare.scheduled())
@@ -143,7 +143,7 @@ SparcISA::MiscRegFile::setFSRegWithEffect(int miscReg, const MiscReg &val,
 }
 
 MiscReg
-MiscRegFile::readFSRegWithEffect(int miscReg, Fault &fault, ExecContext * xc)
+MiscRegFile::readFSRegWithEffect(int miscReg, Fault &fault, ThreadContext * tc)
 {
     switch (miscReg) {
 
@@ -166,7 +166,7 @@ MiscRegFile::readFSRegWithEffect(int miscReg, Fault &fault, ExecContext * xc)
               fault = new PrivilegedAction;
               return 0;
           }
-          sys = dynamic_cast<SparcSystem*>(xc->getSystemPtr());
+          sys = dynamic_cast<SparcSystem*>(tc->getSystemPtr());
           assert(sys != NULL);
           return curTick/Clock::Int::ns - sys->sysTick | stickFields.npt << 63;
         case MISCREG_STICK_CMPR:
@@ -204,19 +204,19 @@ MiscRegFile::readFSRegWithEffect(int miscReg, Fault &fault, ExecContext * xc)
 }
 
 void
-MiscRegFile::processTickCompare(ExecContext *xc)
+MiscRegFile::processTickCompare(ThreadContext *tc)
 {
     panic("tick compare not implemented\n");
 }
 
 void
-MiscRegFile::processSTickCompare(ExecContext *xc)
+MiscRegFile::processSTickCompare(ThreadContext *tc)
 {
     panic("tick compare not implemented\n");
 }
 
 void
-MiscRegFile::processHSTickCompare(ExecContext *xc)
+MiscRegFile::processHSTickCompare(ThreadContext *tc)
 {
     panic("tick compare not implemented\n");
 }
diff --git a/src/arch/sparc/utility.hh b/src/arch/sparc/utility.hh
index f75beb04a..f1c071148 100644
--- a/src/arch/sparc/utility.hh
+++ b/src/arch/sparc/utility.hh
@@ -81,10 +81,10 @@ namespace SparcISA
 
     /**
      * Function to insure ISA semantics about 0 registers.
-     * @param xc The execution context.
+     * @param tc The thread context.
      */
-    template <class XC>
-    void zeroRegisters(XC *xc);
+    template <class TC>
+    void zeroRegisters(TC *tc);
 
 } // namespace SparcISA
 
diff --git a/src/arch/sparc/vtophys.cc b/src/arch/sparc/vtophys.cc
index 0c69ea0a9..f7fd92c15 100644
--- a/src/arch/sparc/vtophys.cc
+++ b/src/arch/sparc/vtophys.cc
@@ -36,7 +36,7 @@
 #include "arch/alpha/vtophys.hh"
 #include "base/chunk_generator.hh"
 #include "base/trace.hh"
-#include "cpu/exec_context.hh"
+#include "cpu/thread_context.hh"
 #include "mem/vport.hh"
 
 using namespace std;
@@ -85,10 +85,10 @@ AlphaISA::vtophys(Addr vaddr)
 }
 
 Addr
-AlphaISA::vtophys(ExecContext *xc, Addr addr)
+AlphaISA::vtophys(ThreadContext *tc, Addr addr)
 {
     AlphaISA::VAddr vaddr = addr;
-    Addr ptbr = xc->readMiscReg(AlphaISA::IPR_PALtemp20);
+    Addr ptbr = tc->readMiscReg(AlphaISA::IPR_PALtemp20);
     Addr paddr = 0;
     //@todo Andrew couldn't remember why he commented some of this code
     //so I put it back in. Perhaps something to do with gdb debugging?
@@ -101,7 +101,7 @@ AlphaISA::vtophys(ExecContext *xc, Addr addr)
             paddr = vaddr;
         } else {
             AlphaISA::PageTableEntry pte =
-                kernel_pte_lookup(xc->getPhysPort(), ptbr, vaddr);
+                kernel_pte_lookup(tc->getPhysPort(), ptbr, vaddr);
             if (pte.valid())
                 paddr = pte.paddr() | vaddr.offset();
         }
@@ -115,52 +115,52 @@ AlphaISA::vtophys(ExecContext *xc, Addr addr)
 
 
 void
-AlphaISA::CopyOut(ExecContext *xc, void *dest, Addr src, size_t cplen)
+AlphaISA::CopyOut(ThreadContext *tc, void *dest, Addr src, size_t cplen)
 {
     uint8_t *dst = (uint8_t *)dest;
-    VirtualPort *vp = xc->getVirtPort(xc);
+    VirtualPort *vp = tc->getVirtPort(tc);
 
     vp->readBlob(src, dst, cplen);
 
-    xc->delVirtPort(vp);
+    tc->delVirtPort(vp);
 
 }
 
 void
-AlphaISA::CopyIn(ExecContext *xc, Addr dest, void *source, size_t cplen)
+AlphaISA::CopyIn(ThreadContext *tc, Addr dest, void *source, size_t cplen)
 {
     uint8_t *src = (uint8_t *)source;
-    VirtualPort *vp = xc->getVirtPort(xc);
+    VirtualPort *vp = tc->getVirtPort(tc);
 
     vp->writeBlob(dest, src, cplen);
 
-    xc->delVirtPort(vp);
+    tc->delVirtPort(vp);
 }
 
 void
-AlphaISA::CopyStringOut(ExecContext *xc, char *dst, Addr vaddr, size_t maxlen)
+AlphaISA::CopyStringOut(ThreadContext *tc, char *dst, Addr vaddr, size_t maxlen)
 {
     int len = 0;
-    VirtualPort *vp = xc->getVirtPort(xc);
+    VirtualPort *vp = tc->getVirtPort(tc);
 
     do {
         vp->readBlob(vaddr++, (uint8_t*)dst++, 1);
         len++;
     } while (len < maxlen && dst[len] != 0 );
 
-    xc->delVirtPort(vp);
+    tc->delVirtPort(vp);
     dst[len] = 0;
 }
 
 void
-AlphaISA::CopyStringIn(ExecContext *xc, char *src, Addr vaddr)
+AlphaISA::CopyStringIn(ThreadContext *tc, char *src, Addr vaddr)
 {
-    VirtualPort *vp = xc->getVirtPort(xc);
+    VirtualPort *vp = tc->getVirtPort(tc);
     for (ChunkGenerator gen(vaddr, strlen(src), AlphaISA::PageBytes); !gen.done();
             gen.next())
     {
         vp->writeBlob(gen.addr(), (uint8_t*)src, gen.size());
         src += gen.size();
     }
-    xc->delVirtPort(vp);
+    tc->delVirtPort(vp);
 }
diff --git a/src/arch/sparc/vtophys.hh b/src/arch/sparc/vtophys.hh
index d9b1a25c9..bf2b757d6 100644
--- a/src/arch/sparc/vtophys.hh
+++ b/src/arch/sparc/vtophys.hh
@@ -34,7 +34,7 @@
 
 #include "arch/sparc/isa_traits.hh"
 
-class ExecContext;
+class ThreadContext;
 class FunctionalPort;
 
 namespace SparcISA {
@@ -43,12 +43,12 @@ PageTableEntry
 kernel_pte_lookup(FunctionalPort *mem, Addr ptbr, SparcISA::VAddr vaddr);
 
 Addr vtophys(Addr vaddr);
-Addr vtophys(ExecContext *xc, Addr vaddr);
+Addr vtophys(ThreadContext *tc, Addr vaddr);
 
-void CopyOut(ExecContext *xc, void *dst, Addr src, size_t len);
-void CopyIn(ExecContext *xc, Addr dst, void *src, size_t len);
-void CopyStringOut(ExecContext *xc, char *dst, Addr vaddr, size_t maxlen);
-void CopyStringIn(ExecContext *xc, char *src, Addr vaddr);
+void CopyOut(ThreadContext *tc, void *dst, Addr src, size_t len);
+void CopyIn(ThreadContext *tc, Addr dst, void *src, size_t len);
+void CopyStringOut(ThreadContext *tc, char *dst, Addr vaddr, size_t maxlen);
+void CopyStringIn(ThreadContext *tc, char *src, Addr vaddr);
 
 };
 #endif // __ARCH_SPARC_VTOPHYS_H__