Turn the instruction tracing code into pluggable sim objects.

These need to be refined a little still and given parameters.

--HG--
extra : convert_revision : 9a8f5a7bd9dacbebbbd2c235cd890c49a81040d7

1 files changed, 146 insertions, 0 deletions

diff --git a/src/sim/insttracer.hh b/src/sim/insttracer.hh
new file mode 100644
index 000000000..ebeae1fe9
--- /dev/null
+++ b/src/sim/insttracer.hh
@@ -0,0 +1,146 @@
+/*
+ * Copyright (c) 2001-2005 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.
+ *
+ * Authors: Steve Reinhardt
+ *          Nathan Binkert
+ */
+
+#ifndef __INSTRECORD_HH__
+#define __INSTRECORD_HH__
+
+#include "base/trace.hh"
+#include "cpu/inst_seq.hh"	// for InstSeqNum
+#include "cpu/static_inst.hh"
+#include "sim/host.hh"
+#include "sim/sim_object.hh"
+
+class ThreadContext;
+
+namespace Trace {
+
+class InstRecord
+{
+  protected:
+    Tick when;
+
+    // The following fields are initialized by the constructor and
+    // thus guaranteed to be valid.
+    ThreadContext *thread;
+    // need to make this ref-counted so it doesn't go away before we
+    // dump the record
+    StaticInstPtr staticInst;
+    Addr PC;
+    bool misspeculating;
+
+    // The remaining fields are only valid for particular instruction
+    // types (e.g, addresses for memory ops) or when particular
+    // options are enabled (e.g., tracing full register contents).
+    // Each data field has an associated valid flag to indicate
+    // whether the data field is valid.
+    Addr addr;
+    bool addr_valid;
+
+    union {
+        uint64_t as_int;
+        double as_double;
+    } data;
+    enum {
+        DataInvalid = 0,
+        DataInt8 = 1,	// set to equal number of bytes
+        DataInt16 = 2,
+        DataInt32 = 4,
+        DataInt64 = 8,
+        DataDouble = 3
+    } data_status;
+
+    InstSeqNum fetch_seq;
+    bool fetch_seq_valid;
+
+    InstSeqNum cp_seq;
+    bool cp_seq_valid;
+
+  public:
+    InstRecord(Tick _when, ThreadContext *_thread,
+               const StaticInstPtr &_staticInst,
+               Addr _pc, bool spec)
+        : when(_when), thread(_thread),
+          staticInst(_staticInst), PC(_pc),
+          misspeculating(spec)
+    {
+        data_status = DataInvalid;
+        addr_valid = false;
+
+        fetch_seq_valid = false;
+        cp_seq_valid = false;
+    }
+
+    virtual ~InstRecord() { }
+
+    void setAddr(Addr a) { addr = a; addr_valid = true; }
+
+    void setData(Twin64_t d) { data.as_int = d.a; data_status = DataInt64; }
+    void setData(Twin32_t d) { data.as_int = d.a; data_status = DataInt32; }
+    void setData(uint64_t d) { data.as_int = d; data_status = DataInt64; }
+    void setData(uint32_t d) { data.as_int = d; data_status = DataInt32; }
+    void setData(uint16_t d) { data.as_int = d; data_status = DataInt16; }
+    void setData(uint8_t d) { data.as_int = d; data_status = DataInt8; }
+
+    void setData(int64_t d) { setData((uint64_t)d); }
+    void setData(int32_t d) { setData((uint32_t)d); }
+    void setData(int16_t d) { setData((uint16_t)d); }
+    void setData(int8_t d)  { setData((uint8_t)d); }
+
+    void setData(double d) { data.as_double = d; data_status = DataDouble; }
+
+    void setFetchSeq(InstSeqNum seq)
+    { fetch_seq = seq; fetch_seq_valid = true; }
+
+    void setCPSeq(InstSeqNum seq)
+    { cp_seq = seq; cp_seq_valid = true; }
+
+    virtual void dump() = 0;
+};
+
+class InstTracer : public SimObject
+{
+  public:
+    InstTracer(const std::string & name) : SimObject(name)
+    {}
+
+    virtual ~InstTracer()
+    {};
+
+    virtual InstRecord *
+        getInstRecord(Tick when, ThreadContext *tc,
+                const StaticInstPtr staticInst, Addr pc) = 0;
+};
+
+
+
+}; // namespace Trace
+
+#endif // __INSTRECORD_HH__