DBT-RISE-TGC/src/iss/factory.h

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/*******************************************************************************
* Copyright (C) 2021 MINRES Technologies GmbH
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. 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.
*
* 3. Neither the name of the copyright holder 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 HOLDER 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.
*
*******************************************************************************/
#ifndef _ISS_FACTORY_H_
#define _ISS_FACTORY_H_
#include <iss/iss.h>
#include <memory>
#include <unordered_map>
#include <functional>
#include <string>
#include <algorithm>
#include <vector>
namespace iss {
using cpu_ptr = std::unique_ptr<iss::arch_if>;
using vm_ptr= std::unique_ptr<iss::vm_if>;
template<typename PLAT>
std::tuple<cpu_ptr, vm_ptr> create_cpu(std::string const& backend, unsigned gdb_port){
using core_type = typename PLAT::core;
core_type* lcpu = new PLAT();
if(backend == "interp")
return {cpu_ptr{lcpu}, vm_ptr{iss::interp::create(lcpu, gdb_port)}};
#ifdef WITH_LLVM
if(backend == "llvm")
return {cpu_ptr{lcpu}, vm_ptr{iss::llvm::create(lcpu, gdb_port)}};
#endif
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#ifdef WITH_TCC
if(backend == "tcc")
return {cpu_ptr{lcpu}, vm_ptr{iss::tcc::create(lcpu, gdb_port)}};
#endif
return {nullptr, nullptr};
}
class core_factory {
using cpu_ptr = std::unique_ptr<iss::arch_if>;
using vm_ptr= std::unique_ptr<iss::vm_if>;
using base_t = std::tuple<cpu_ptr, vm_ptr>;
using create_fn = std::function<base_t(unsigned, void*) >;
using registry_t = std::unordered_map<std::string, create_fn> ;
registry_t registry;
core_factory() = default;
core_factory(const core_factory &) = delete;
core_factory & operator=(const core_factory &) = delete;
public:
static core_factory & instance() { static core_factory bf; return bf; }
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bool register_creator(const std::string & className, create_fn const& fn) {
registry[className] = fn;
return true;
}
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base_t create(std::string const& className, unsigned gdb_port=0, void* init_data=nullptr) const {
registry_t::const_iterator regEntry = registry.find(className);
if (regEntry != registry.end())
return regEntry->second(gdb_port, init_data);
return {nullptr, nullptr};
}
std::vector<std::string> get_names() {
std::vector<std::string> keys{registry.size()};
std::transform(std::begin(registry), std::end(registry), std::begin(keys), [](std::pair<std::string, create_fn> const& p){
return p.first;
});
return keys;
}
};
}
#endif /* _ISS_FACTORY_H_ */