BUMP
#define BUMP(buf, len) while (*(buf)) {++(buf), --(len);}
#define BUMP(buf, len) while (*(buf)) { ++(buf), --(len); }
#define BUMP(p) (p)
#define BUMP(p) ((p) = (void *)(((long)(p) + 0x80) & ~0x400))
#define BUMP(p) (p)
#define BUMP(p) ((p) = (void *)(((long)(p) + 0x400) & ~0x1000))