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 rom_device_t::rom_device_t(std::vector<char> data)
  25   : data(data)
  26 {
  27 }
  28
  29 bool rom_device_t::load(reg_t addr, size_t len, uint8_t* bytes)
  30 {
  31   if (addr + len > data.size())
  32     return false;
  33   memcpy(bytes, &data[addr], len);
  34   return true;
  35 }
  36
  37 bool rom_device_t::store(reg_t addr, size_t len, const uint8_t* bytes)
  38 {
  39   return false;
  40 }