emulator/hart.h


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#pragma once

#include "emulator/csr.h"

#include <stdint.h>
#include <stdbool.h>

#define PRIV_U 0
#define PRIV_S 1
#define PRIV_M 3

struct Hart
{
    uint32_t hartid;
    
    uint32_t regs[32];

    uint32_t pc;
    uint8_t  priv;
    
    // @Todo Proper memory system
    char*    mem;
    uint32_t mem_size;

    // @Todo Deduplicate per machine
    Csr      csrs[4096];

    uint64_t instret;

    // @Todo Deduplicate per machine
    uint64_t time;
};
typedef struct Hart Hart;

void hart_init(Hart* hart, uint32_t id, char* mem, uint32_t mem_size);

void execute(Hart* hart, uint32_t instruction);
void execute_from(Hart* hart, uint32_t start_address);