#pragma once #include enum { T_SYSCALL = 0x84, SYS_exit = 0, SYS_greet = 1, SYS_putc = 2, SYS_puts = 3, SYS_switch_to_text = 4, SYS_switch_to_graphics = 5, SYS_swap_frame = 6, SYS_time_ms = 7, SYS_halt = 8, SYS_getc = 9, SYS_set_beep = 10, }; int syscall(int call, uintptr_t arg);