1 files changed, 106 insertions, 0 deletions
diff --git a/sim/exec_context.cc b/sim/exec_context.cc
new file mode 100644
index 000000000..c81d172a8
--- /dev/null
+++ b/sim/exec_context.cc
@@ -0,0 +1,106 @@
+/*
+ * Copyright (c) 2003 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <string>
+
+#include "base_cpu.hh"
+#include "exec_context.hh"
+
+#ifdef FULL_SYSTEM
+#include "system.hh"
+#else
+#include "prog.hh"
+#endif
+
+using namespace std;
+
+// constructor
+#ifdef FULL_SYSTEM
+ExecContext::ExecContext(BaseCPU *_cpu, int _thread_num, System *_sys,
+                         AlphaItb *_itb, AlphaDtb *_dtb,
+                         FunctionalMemory *_mem, int _cpu_id)
+    : kernelStats(this, _cpu), cpu(_cpu), thread_num(_thread_num), mem(_mem),
+      itb(_itb), dtb(_dtb), cpu_id(_cpu_id), system(_sys),
+      memCtrl(_sys->memCtrl), physmem(_sys->physmem)
+{
+    memset(&regs, 0, sizeof(RegFile));
+    _status = Active;
+    func_exe_insn = 0;
+    storeCondFailures = 0;
+    system->registerExecContext(this);
+}
+#else
+ExecContext::ExecContext(BaseCPU *_cpu, int _thread_num,
+                         Process *_process, int _asid)
+    : cpu(_cpu), thread_num(_thread_num), process(_process), asid (_asid)
+{
+
+    // Register with process object. Our 'active' will be set by the
+    // process iff we're the initial context.  Others are reserved for
+    // dynamically created threads.
+    process->registerExecContext(this);
+
+    mem = process->getMemory();
+
+    func_exe_insn = 0;
+    storeCondFailures = 0;
+}
+
+ExecContext::ExecContext(BaseCPU *_cpu, int _thread_num,
+                         FunctionalMemory *_mem, int _asid)
+    : cpu(_cpu), thread_num(_thread_num), process(NULL), mem(_mem),
+      asid(_asid)
+{
+}
+#endif
+
+void
+ExecContext::setStatus(Status new_status)
+{
+#ifdef FULL_SYSTEM
+    if (status() == new_status)
+        return;
+
+    // Don't change the status from active if there are pending interrupts
+    if (new_status == Suspended && cpu->check_interrupts()) {
+        assert(status() == Active);
+        return;
+    }
+#endif
+
+    _status = new_status;
+    cpu->execCtxStatusChg();
+}
+
+void
+ExecContext::regStats(const string &name)
+{
+#ifdef FULL_SYSTEM
+    kernelStats.regStats(name + ".kern");
+#endif
+}