76 lines
2.9 KiB
C++
76 lines
2.9 KiB
C++
/*******************************************************************************
|
|
* Copyright (C) 2025 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.
|
|
*
|
|
* Contributors:
|
|
* eyck@minres.com - initial implementation
|
|
******************************************************************************/
|
|
|
|
#ifndef _MEMORY_MEMORY_IF_
|
|
#define _MEMORY_MEMORY_IF_
|
|
|
|
#include "iss/vm_types.h"
|
|
#include <deque>
|
|
#include <functional>
|
|
#include <limits>
|
|
#include <util/delegate.h>
|
|
|
|
namespace iss {
|
|
namespace mmio {
|
|
|
|
using rd_mem_func_sig = iss::status(iss::access_type, uint64_t, unsigned, uint8_t*);
|
|
using wr_mem_func_sig = iss::status(iss::access_type, uint64_t, unsigned, uint8_t const*);
|
|
|
|
struct memory_if {
|
|
util::delegate<iss::status(access_type, uint64_t, unsigned, uint8_t*)> rd_mem;
|
|
util::delegate<iss::status(access_type, uint64_t, unsigned, uint8_t const*)> wr_mem;
|
|
};
|
|
|
|
struct memory_elem {
|
|
virtual memory_if get_mem_if() = 0;
|
|
virtual void set_next(memory_if) = 0;
|
|
virtual void register_csrs() {}
|
|
virtual std::tuple<uint64_t, uint64_t> get_range() { return {0, std::numeric_limits<uint64_t>::max()}; }
|
|
};
|
|
|
|
struct memory_hierarchy {
|
|
void prepend(memory_elem&);
|
|
void append(memory_elem&);
|
|
void insert_before(memory_elem&);
|
|
void insert_after(memory_elem&);
|
|
void replace_last(memory_elem&);
|
|
|
|
protected:
|
|
void update_chain();
|
|
std::deque<std::reference_wrapper<memory_elem>> hierarchy;
|
|
};
|
|
|
|
} // namespace mmio
|
|
} // namespace iss
|
|
#endif |