[XBDM] Add impl. for DmGetXboxName, stub 5 functions

Stubs: DmGetXbeInfo, DmIsDebuggerPresent, DmRegisterCommandProcessor, DmRegisterCommandProcessorEx
This helps progress some debug builds of games, DmGetXboxName error codes are based on what some games seem to expect from it.
Will probably be a good idea to move most of this to xbdm_info.cc soon.

src/xenia/kernel/xbdm/xbdm_misc.cc

@@ -14,6 +14,8 @@
 #include "xenia/kernel/xthread.h"
 #include "xenia/xbox.h"
 
+#define XBDM_ERROR(err) (0x82DA0000 | (err & 0xFFFF))
+
 namespace xe {
 namespace kernel {
 namespace xbdm {
@@ -42,6 +44,53 @@ dword_result_t DmFindPdbSignature(lpdword_t unk0_ptr, lpdword_t unk1_ptr) {
 }
 DECLARE_XBDM_EXPORT1(DmFindPdbSignature, kDebug, kStub);
 
+dword_result_t DmGetXbeInfo(pointer_t<char> path, pointer_t<uint8_t> info) {
+  // TODO: get full path of path parameter, and copy it into info[0:0x100]
+  memset(info, 0, 0x10C);
+  return X_ERROR_SUCCESS;
+}
+DECLARE_XBDM_EXPORT1(DmGetXbeInfo, kDebug, kStub);
+
+dword_result_t DmGetXboxName(pointer_t<char> name, lpdword_t name_len) {
+  std::string box_name = "XeniaBox";
+  if (!name_len) {
+    return XBDM_ERROR(0x17);  // xbdm invalid arg error code?
+  }
+
+  auto orig_len = *name_len;
+  *name_len = (uint32_t)box_name.length() + 1;
+
+  if (orig_len < *name_len) {
+    return XBDM_ERROR(0x105);  // xbdm buffer size error code?
+  }
+
+  // Limit console name size to 255 chars
+  auto name_size = std::min((uint32_t)box_name.length(), 255u);
+
+  memcpy(name, box_name.c_str(), name_size);
+  name[name_size] = 0;
+
+  return X_ERROR_SUCCESS;
+}
+DECLARE_XBDM_EXPORT1(DmGetXboxName, kDebug, kImplemented);
+
+dword_result_t DmIsDebuggerPresent() { return 0; }
+DECLARE_XBDM_EXPORT1(DmIsDebuggerPresent, kDebug, kStub);
+
+dword_result_t DmRegisterCommandProcessor(dword_t r3, dword_t r4) {
+  return X_ERROR_SUCCESS;
+}
+DECLARE_XBDM_EXPORT1(DmRegisterCommandProcessor, kDebug, kStub);
+
+dword_result_t DmRegisterCommandProcessorEx(dword_t r3, dword_t r4,
+                                            dword_t r5) {
+  return X_ERROR_SUCCESS;
+}
+DECLARE_XBDM_EXPORT1(DmRegisterCommandProcessorEx, kDebug, kStub);
+
+dword_result_t DmSetDumpSettings(dword_t r3) { return X_ERROR_SUCCESS; }
+DECLARE_XBDM_EXPORT1(DmSetDumpSettings, kDebug, kStub);
+
 void RegisterMiscExports(xe::cpu::ExportResolver* export_resolver,
                          KernelState* kernel_state) {}