extern void fpuprocrestore(Proc*);
extern void fpuprocsave(Proc*);
extern void fpusysprocsetup(Proc*);
-extern void fpusysrfork(Ureg*);
-extern void fpusysrforkchild(Proc*, Ureg *, Proc*);
extern int fpuemu(Ureg*);
/*
uintptr mmukunmap(uintptr, uintptr, usize);
extern void* mmuuncache(void*, usize);
extern void* ucalloc(usize);
-extern void* ucallocalign(usize size, int align, int span);
+extern void* ucallocalign(usize size, int align, usize span);
extern Block* ucallocb(int);
extern void ucfree(void*);
extern void ucfreeb(Block*);