func (s *WorkingSet) Clear(mu uc.Unicorn) *errors.Error {
if s.newest == -1 {
return nil
}
for i := s.oldest; i != s.newest; i = (i + 1) % len(s.mapped) {
err := mu.MemUnmap(s.mapped[i], pagesize)
if err != nil {
return wrap(err)
}
}
return nil
}
func (s *WorkingSet) StoreInWorkingSet(addr uint64, mu uc.Unicorn) error {
if s.newest == -1 {
s.mapped[0] = addr
s.oldest = 0
s.newest = 0
}
s.newest = (s.newest + 1) % len(s.mapped)
if s.newest == s.oldest { // unmap old page
addr_to_unmap := s.mapped[s.oldest]
err := mu.MemUnmap(addr_to_unmap, pagesize)
if err != nil {
return err
}
}
s.oldest = (s.oldest + 1) % len(s.mapped)
s.mapped[s.newest] = addr
return nil
}
func (s *WorkingSet) StoreInWorkingSet(addr uint64, mu uc.Unicorn) *errors.Error {
if log_mem {
log.WithFields(log.Fields{"addr": hex(addr)}).Debug("Store In Working Set")
}
if s.newest == -1 {
s.mapped[0] = addr
s.oldest = 0
s.newest = 0
}
s.newest = (s.newest + 1) % len(s.mapped)
if s.newest == s.oldest { // unmap old page
addr_to_unmap := s.mapped[s.oldest]
if log_mem {
log.WithFields(log.Fields{"addr_to_unmap": addr_to_unmap}).Debug("unmap")
}
err := mu.MemUnmap(addr_to_unmap, pagesize)
if err != nil {
return wrap(err)
}
}
s.oldest = (s.oldest + 1) % len(s.mapped)
s.mapped[s.newest] = addr
return nil
}