Initial commit

rpcsx-os/iodev/rng.cpp

@@ -0,0 +1,39 @@
+#include "io-device.hpp"
+#include "vm.hpp"
+#include <cinttypes>
+#include <cstdio>
+
+struct RngDevice : public IoDevice {};
+struct RngInstance : public IoDeviceInstance {};
+
+static std::int64_t rng_instance_ioctl(IoDeviceInstance *instance,
+                                       std::uint64_t request, void *argp) {
+  std::fprintf(stderr, "***ERROR*** Unhandled rng ioctl %" PRIx64 "\n", request);
+  return 0;
+}
+
+static void *rng_instance_mmap(IoDeviceInstance *instance, void *address,
+                               std::uint64_t size, std::int32_t prot,
+                               std::int32_t flags, std::int64_t offset) {
+  std::fprintf(stderr, "***ERROR*** Unhandled rng mmap %" PRIx64 "\n", offset);
+  return rx::vm::map(address, size, prot, flags);
+}
+
+static std::int32_t rng_device_open(IoDevice *device,
+                                    orbis::Ref<IoDeviceInstance> *instance,
+                                    const char *path, std::uint32_t flags,
+                                    std::uint32_t mode) {
+  auto *newInstance = new RngInstance{};
+  newInstance->ioctl = rng_instance_ioctl;
+  newInstance->mmap = rng_instance_mmap;
+
+  io_device_instance_init(device, newInstance);
+  *instance = newInstance;
+  return 0;
+}
+
+IoDevice *createRngCharacterDevice() {
+  auto *newDevice = new RngDevice{};
+  newDevice->open = rng_device_open;
+  return newDevice;
+}