Added xboxkrnl_error.cc/.h and moved RtlNtStatusToDosError to it.

src/xenia/kernel/xboxkrnl_error.cc

@@ -0,0 +1,62 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2013 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include "xenia/kernel/xboxkrnl_error.h"
+
+#include <algorithm>
+
+#include "xenia/base/atomic.h"
+#include "xenia/base/logging.h"
+#include "xenia/base/string.h"
+#include "xenia/kernel/kernel_state.h"
+#include "xenia/kernel/xboxkrnl_private.h"
+#include "xenia/kernel/objects/xthread.h"
+#include "xenia/kernel/objects/xuser_module.h"
+#include "xenia/kernel/util/shim_utils.h"
+#include "xenia/kernel/util/xex2.h"
+
+namespace xe {
+namespace kernel {
+
+SHIM_CALL RtlNtStatusToDosError_shim(PPCContext* ppc_state,
+                                     KernelState* state) {
+  uint32_t status = SHIM_GET_ARG_32(0);
+
+  XELOGD("RtlNtStatusToDosError(%.4X)", status);
+
+  if (!status || (status & 0x20000000)) {
+    SHIM_SET_RETURN_32(status);
+    return;
+  }
+  
+  if ((status >> 16) == 0x8007) {
+    SHIM_SET_RETURN_32(status & 0xFFFF);
+    return;
+  }
+
+  if ((status & 0xF0000000) == 0xD0000000) {
+    // High bits doesn't matter.
+    status &= ~0x30000000;
+  }
+
+  // TODO(benvanik): implement lookup table.
+  XELOGE("RtlNtStatusToDosError lookup NOT IMPLEMENTED");
+
+  uint32_t result = 317;  // ERROR_MR_MID_NOT_FOUND
+
+  SHIM_SET_RETURN_32(result);
+}
+
+}  // namespace kernel
+}  // namespace xe
+
+void xe::kernel::xboxkrnl::RegisterErrorExports(
+    xe::cpu::ExportResolver* export_resolver, KernelState* state) {
+  SHIM_SET_MAPPING("xboxkrnl.exe", RtlNtStatusToDosError, state);
+}