DUMP
#define DUMP(w, x, y, z) dump_state(w, x, y, z)
#define DUMP(w, x, y, z)
#define DUMP 300
#define DUMP(reg) #reg, regs->r_##reg
#define DUMP(reg) #reg, regs->r_##reg
# undef DUMP
# define DUMP(a,b,c,d) dst_s_dump(a,b,c,d)
# define DUMP(a,b,c,d)