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/*
* Copyright (C) 2025 Johnny Richard <johnny@johnnyrichard.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef VM_H
#define VM_H
#include "stack.h"
#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof(program[0]))
#define STACK_CAPACITY 1024
#define HEAP_CAPACITY 1024
typedef enum inst_type
{
// stack
INST_PUSH,
INST_DUP,
INST_COPY,
INST_SWAP,
INST_DROP,
INST_SLIDE,
// arithmetics
INST_ADD,
INST_SUB,
INST_MUL,
INST_DIV,
INST_MOD,
// heap access
INST_STORE,
INST_LOAD,
// Flow control
INST_CALL,
INST_RET,
INST_LABEL,
INST_JMP,
INST_JMPZ,
INST_JMPN,
// I/O
INST_PRINTI,
INST_PRINTC,
INST_READI,
INST_READC,
INST_END,
} inst_type_t;
typedef struct instr
{
inst_type_t type;
int operand;
} inst_t;
typedef struct label
{
int name;
int index;
} label_t;
typedef struct vm
{
stack_t stack;
stack_t call_stack;
int* heap;
label_t* labels;
} vm_t;
void
vm_init(vm_t* vm);
void
vm_run(vm_t* vm, inst_t* insts);
#endif /* VM_H */
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