#include #include #include #define USERSPACE __attribute__((section(".userspace"))) USERSPACE void userspace_entry() { Kernel::syscall(SYS_WRITE, STDOUT_FILENO, "Hello World!", 12); char buffer[128]; while (true) { long n_read = Kernel::syscall(SYS_READ, STDIN_FILENO, buffer, sizeof(buffer)); Kernel::syscall(SYS_WRITE, STDOUT_FILENO, buffer, n_read); } Kernel::syscall(SYS_EXIT); }