Now the L1VM can be build as an embedded shared library too! So you can embedd it in other C code. The global data can be read by the host C program. You can run a program with the run program function. On the host program end you need to call the cleanup function to free the VM memory.

Here is an example:

// test-l1vm.c
// This is a demo program of how to use the L1VM as a shared library program

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "l1vm-embedded.h"

int main (void) {
    long long int data_size, i, pwrap = 0;
    unsigned char *data_ptr = NULL;
    int ret;
    unsigned char hexstr[3];

    // this shows how to set command line arguments for the embedded L1VM
    // setting the stack size to 10000 as an example.
    int ac = 3;
    char *av[3] = {"l1vm", "-S", "10000"};

    printf("starting L1VM hello world program...\n");

    ret = l1vm_run_program ("hello", ac, av);
    if (ret != 0)
        printf ("error running program! exit!\n");
        l1vm_cleanup ();
        exit (1);

    data_size = l1vm_get_global_data_size ();
    data_ptr = l1vm_get_global_data ();

    printf ("\n\nmemdump global data:\n");
    for (i = 0; i < data_size; i++)
        sprintf ((char *) hexstr, "%X ", data_ptr[i]);

        if (strlen ((const char *) hexstr) < 3)
            printf ("0");

        printf ("%s", hexstr);

        if (pwrap == 16)
            printf ("\n");
            pwrap = 0;
    printf ("\n\n");

    // call the L1VM memory cleanup function:
    l1vm_cleanup ();
    exit (0);

This program just runs the “Hello world!” example and dumps the global data array.