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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.
*
* 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: Andrew Bardsley
*/
/**
* @file
*
* C++-only configuration and instantiation support. This allows a
* config to be read back from a .ini and instantiated without
* Python. Useful if you want to embed gem5 within a larger system
* without carrying the integration cost of the fully-featured
* configuration system.
*
* This file contains definitions needed to store summaries of a
* SimObject's parameter structure
*/
#ifndef __SIM_CXX_CONFIG_HH__
#define __SIM_CXX_CONFIG_HH__
#include <map>
#include <string>
#include <vector>
#include "sim/sim_object.hh"
class CxxConfigParams;
/** Config details entry for a SimObject. Instances of this class contain
* enough configuration layout information to popular a ...Param structure
* and build a SimObject from it with the help of the 'set' functions in
* each ...Param class */
class CxxConfigDirectoryEntry
{
public:
/* Class to represent parameters and SimObject references within
* SimObjects */
class ParamDesc
{
public:
const std::string name;
/* Is this a vector or singleton parameters/SimObject */
const bool isVector;
/** Is this a SimObject, and so is to be set with setSimObject...
* or another from-string parameter set with setParam... */
const bool isSimObject;
ParamDesc(const std::string &name_,
bool isVector_, bool isSimObject_) :
name(name_), isVector(isVector_), isSimObject(isSimObject_)
{ }
};
/** Similar to ParamDesc to describe ports */
class PortDesc
{
public:
const std::string name;
/* Is this a vector or singleton parameters/SimObject */
const bool isVector;
/** Is this a master or slave port */
const bool isMaster;
PortDesc(const std::string &name_,
bool isVector_, bool isMaster_) :
name(name_), isVector(isVector_), isMaster(isMaster_)
{ }
};
/** All parameters (including SimObjects) in order */
std::map<std::string, ParamDesc *> parameters;
/** Ports */
std::map<std::string, PortDesc *> ports;
/** Make a ...Param structure for the SimObject class of this entry */
virtual CxxConfigParams *makeParamsObject() const { return NULL; }
virtual ~CxxConfigDirectoryEntry() { }
};
/** Base for peer classes of SimObjectParams derived classes with parameter
* modifying member functions. C++ configuration will offer objects of
* these classes to SimObjects as params rather than SimObjectParams
* objects */
class CxxConfigParams
{
private:
static const std::string invalidName;
public:
/** Flags passable to setParam... to smooth over any parsing difference
* between different config files */
typedef uint32_t FlagsType;
typedef ::Flags<FlagsType> Flags;
/** Example flag */
/* static const FlagsType MY_NEW_FLAG = 0x00000001; */
public:
/** Set future object's full path name */
virtual void setName(const std::string &name_) { }
/** Get full path name string */
virtual const std::string &getName() { return invalidName; }
/** Set a SimObject valued parameter with a reference to the given
* SimObject. This will return false if the parameter name is not
* valid or the object is of the wrong type */
virtual bool setSimObject(const std::string &name,
SimObject *simObject)
{ return false; }
/** As setSimObjectVector but set a whole vector of references */
virtual bool setSimObjectVector(const std::string &name,
const std::vector<SimObject *> &simObjects)
{ return false; }
/** Set a parameter with a value parsed from the given string. The
* parsing regime matches the format of .ini config files. Returns
* false if the parameter name is not valid or the string cannot be
* parsed as the type of the parameter */
virtual bool setParam(const std::string &name,
const std::string &value, const Flags flags)
{ return false; }
/** As setParamVector but for parameters given as vectors pre-separated
* into elements */
virtual bool setParamVector(const std::string &name,
const std::vector<std::string> &values, const Flags flags)
{ return false; }
/** Set the number of connections expected for the named port. Returns
* false if the port name is not valid */
virtual bool setPortConnectionCount(const std::string &name,
unsigned int count)
{ return false; }
/** Create the associated SimObject */
virtual SimObject *simObjectCreate() { return NULL; }
CxxConfigParams() { }
virtual ~CxxConfigParams() { }
};
/** Config file wrapper providing a common interface to CxxConfigManager */
class CxxConfigFileBase
{
public:
CxxConfigFileBase() { }
virtual ~CxxConfigFileBase() { }
/** Get a single parameter value as a string returned in value.
* For booleans, the function expects "true" or "false" in value.
* For NULL SimObjects, it expects "Null" */
virtual bool getParam(const std::string &object_name,
const std::string &param_name,
std::string &value) const = 0;
/** Get a list/vector parameter */
virtual bool getParamVector(const std::string &object_name,
const std::string &param_name,
std::vector<std::string> &values) const = 0;
/** Get the peer (connected) ports of the named ports */
virtual bool getPortPeers(const std::string &object_name,
const std::string &port_name,
std::vector<std::string> &peers) const = 0;
/** Does an object with this path exist? */
virtual bool objectExists(const std::string &object_name) const = 0;
/** Get all SimObjects in the config */
virtual void getAllObjectNames(std::vector<std::string> &list) const = 0;
/** Get the names or paths of all the children SimObjects of this
* SimObject. If return_paths is true then full paths are returned.
* If false, only the last name component for each object is returned */
virtual void getObjectChildren(const std::string &object_name,
std::vector<std::string> &children,
bool return_paths = false) const = 0;
/** Load config file */
virtual bool load(const std::string &filename) = 0;
/** Get the flags which should be used to modify parameter parsing
* behaviour */
virtual CxxConfigParams::Flags getFlags() const { return 0; }
};
/** Directory of all SimObject classes config details */
extern std::map<std::string, CxxConfigDirectoryEntry *>
cxx_config_directory;
/** Initialise cxx_config_directory. This is defined in the
* auto-generated .../cxx_config/init.cc */
void cxxConfigInit();
#endif // __SIM_CXX_CONFIG_HH__