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/*
* Copyright (c) 2014 ARM Limited
* All rights reserved
*
* The license below extends only to copyright in the software and shall
* not be construed as granting a license to any other intellectual
* property including but not limited to intellectual property relating
* to a hardware implementation of the functionality of the software
* licensed hereunder. You may use the software subject to the license
* terms below provided that you ensure that this notice is replicated
* unmodified and in its entirety in all distributions of the software,
* modified or unmodified, in source code or in binary form.
*
* 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/types.hh"
#include "cpu/inst_seq.hh"
#include "cpu/static_inst.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;
TheISA::PCState pc;
StaticInstPtr macroStaticInst;
// 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.
/*** @defgroup mem
* @{
* Memory request information in the instruction accessed memory.
* @see mem_valid
*/
Addr addr; ///< The address that was accessed
Addr size; ///< The size of the memory request
unsigned flags; ///< The flags that were assigned to the request.
/** @} */
/** @defgroup data
* If this instruction wrote any data values they're recorded here
* WARNING: Instructions are quite loose with with what they write
* since many instructions write multiple values (e.g. destintation
* register, flags, status, ...) This only captures the last write.
* @TODO fix this and record all destintations that an instruction writes
* @see data_status
*/
union {
uint64_t as_int;
double as_double;
} data;
/** @defgroup fetch_seq
* This records the serial number that the instruction was fetched in.
* @see fetch_seq_valid
*/
InstSeqNum fetch_seq;
/** @defgroup commit_seq
* This records the instruction number that was committed in the pipeline
* @see cp_seq_valid
*/
InstSeqNum cp_seq;
/** @ingroup data
* What size of data was written?
*/
enum DataStatus {
DataInvalid = 0,
DataInt8 = 1, // set to equal number of bytes
DataInt16 = 2,
DataInt32 = 4,
DataInt64 = 8,
DataDouble = 3
} data_status;
/** @ingroup memory
* Are the memory fields in the record valid?
*/
bool mem_valid;
/** @ingroup fetch_seq
* Are the fetch sequence number fields valid?
*/
bool fetch_seq_valid;
/** @ingroup commit_seq
* Are the commit sequence number fields valid?
*/
bool cp_seq_valid;
/** is the predicate for execution this inst true or false (not execed)?
*/
bool predicate;
public:
InstRecord(Tick _when, ThreadContext *_thread,
const StaticInstPtr _staticInst,
TheISA::PCState _pc,
const StaticInstPtr _macroStaticInst = NULL)
: when(_when), thread(_thread), staticInst(_staticInst), pc(_pc),
macroStaticInst(_macroStaticInst), addr(0), size(0), flags(0),
fetch_seq(0), cp_seq(0), data_status(DataInvalid), mem_valid(false),
fetch_seq_valid(false), cp_seq_valid(false), predicate(true)
{ }
virtual ~InstRecord() { }
void setWhen(Tick new_when) { when = new_when; }
void setMem(Addr a, Addr s, unsigned f)
{
addr = a; size = s; flags = f; mem_valid = true;
}
template <typename T, size_t N>
void
setData(std::array<T, N> d)
{
data.as_int = d[0];
data_status = (DataStatus)sizeof(T);
static_assert(sizeof(T) == DataInt8 || sizeof(T) == DataInt16 ||
sizeof(T) == DataInt32 || sizeof(T) == DataInt64,
"Type T has an unrecognized size.");
}
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; }
void setPredicate(bool val) { predicate = val; }
virtual void dump() = 0;
public:
Tick getWhen() const { return when; }
ThreadContext *getThread() const { return thread; }
StaticInstPtr getStaticInst() const { return staticInst; }
TheISA::PCState getPCState() const { return pc; }
StaticInstPtr getMacroStaticInst() const { return macroStaticInst; }
Addr getAddr() const { return addr; }
Addr getSize() const { return size; }
unsigned getFlags() const { return flags; }
bool getMemValid() const { return mem_valid; }
uint64_t getIntData() const { return data.as_int; }
double getFloatData() const { return data.as_double; }
int getDataStatus() const { return data_status; }
InstSeqNum getFetchSeq() const { return fetch_seq; }
bool getFetchSeqValid() const { return fetch_seq_valid; }
InstSeqNum getCpSeq() const { return cp_seq; }
bool getCpSeqValid() const { return cp_seq_valid; }
};
class InstTracer : public SimObject
{
public:
InstTracer(const Params *p) : SimObject(p)
{}
virtual ~InstTracer()
{};
virtual InstRecord *
getInstRecord(Tick when, ThreadContext *tc,
const StaticInstPtr staticInst, TheISA::PCState pc,
const StaticInstPtr macroStaticInst = NULL) = 0;
};
} // namespace Trace
#endif // __INSTRECORD_HH__
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