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Add simple VM with stack storage

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mrkubax10 2024-08-05 21:58:53 +02:00
parent c2985a6bb1
commit 8d97cda751
2 changed files with 112 additions and 0 deletions
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37
src/server/as/vm.cpp Normal file
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/*
PolyGun
Copyright (c) 2024 mrkubax10 <mrkubax10@onet.pl>
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
#include "server/as/vm.hpp"
using namespace polygun::server::as;
VM::VM(unsigned storage_size) :
m_storage_size(storage_size),
m_stack(new uint8_t[storage_size]),
m_stack_ptr(0)
{}
VM::~VM() {
delete[] m_stack;
}

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src/server/as/vm.hpp Normal file
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/*
PolyGun
Copyright (c) 2024 mrkubax10 <mrkubax10@onet.pl>
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
#ifndef POLYGUN_SERVER_AS_VM_HPP
#define POLYGUN_SERVER_AS_VM_HPP
#include <cassert>
#include <cstdint>
namespace polygun::server::as {
class VM final {
public:
enum Location {
LOCATION_STACK,
LOCATION_STATIC
};
public:
VM(unsigned storage_size);
~VM();
template<typename T>
void set_value_at(Location location, unsigned addr, T value) {
assert(addr<m_storage_size);
switch(location) {
case Location::LOCATION_STACK:
*reinterpret_cast<T*>(&m_stack[addr]) = value;
break;
case Location::LOCATION_STATIC:
// TODO
break;
}
}
template<typename T>
T get_value_at(Location location, unsigned addr) {
assert(addr<m_storage_size);
switch(location) {
case Location::LOCATION_STACK:
return *&m_stack[addr];
case Location::LOCATION_STATIC:
// TODO
return 0;
}
}
unsigned get_stack_ptr() const { return m_stack_ptr; }
private:
unsigned m_storage_size;
uint8_t* m_stack;
unsigned m_stack_ptr;
};
}
#endif // POLYGUN_SERVER_AS_VM_HPP