riscv/devices.cc

   1 #include "devices.h"
   2
   3 void bus_t::add_device(reg_t addr, abstract_device_t* dev)
   4 {
   5   devices[-addr] = dev;
   6 }
   7
   8 bool bus_t::load(reg_t addr, size_t len, uint8_t* bytes)
   9 {
  10   auto it = devices.lower_bound(-addr);
  11   if (it == devices.end())
  12     return false;
  13   return it->second->load(addr - -it->first, len, bytes);
  14 }
  15
  16 bool bus_t::store(reg_t addr, size_t len, const uint8_t* bytes)
  17 {
  18   auto it = devices.lower_bound(-addr);
  19   if (it == devices.end())
  20     return false;
  21   return it->second->store(addr - -it->first, len, bytes);
  22 }
  23
  24 std::pair<reg_t, abstract_device_t*> bus_t::find_device(reg_t addr)
  25 {
  26   auto it = devices.lower_bound(-addr);
  27   if (it == devices.end() || addr < -it->first)
  28     return std::make_pair((reg_t)0, (abstract_device_t*)NULL);
  29   return std::make_pair(-it->first, it->second);
  30 }