Massive refactoring of all code + audio skeleton.

This should make it easier to find files and (in the future) split things
up into separate libraries.
It also changes around emulator initialization to make it a little more
difficult to do things out of order and a little more sensible as to when
real init work happens.
Also adding a skeleton audio system/driver and reworking CPU register
access to be more extensible.

src/xenia/kernel/xam/xam_net.cc

@@ -0,0 +1,76 @@
+/**
+ ******************************************************************************
+ * 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/xam/xam_net.h>
+
+#include <xenia/kernel/shim_utils.h>
+#include <xenia/kernel/xam/xam_private.h>
+#include <xenia/kernel/xam/xam_state.h>
+
+
+using namespace xe;
+using namespace xe::kernel;
+using namespace xe::kernel::xam;
+
+
+namespace xe {
+namespace kernel {
+namespace xam {
+
+
+SHIM_CALL NetDll_XNetStartup_shim(
+    xe_ppc_state_t* ppc_state, XamState* state) {
+  uint32_t one = SHIM_GET_ARG_32(0);
+  uint32_t params_ptr = SHIM_GET_ARG_32(1);
+
+  XELOGD(
+      "NetDll_XNetStartup(%d, %.8X)",
+      one,
+      params_ptr);
+
+  SHIM_SET_RETURN(0);
+}
+
+
+SHIM_CALL NetDll_WSAStartup_shim(
+    xe_ppc_state_t* ppc_state, XamState* state) {
+  uint32_t one = SHIM_GET_ARG_32(0);
+  uint32_t version = SHIM_GET_ARG_16(1);
+  uint32_t data_ptr = SHIM_GET_ARG_32(2);
+
+  XELOGD(
+      "NetDll_WSAStartup(%d, %.4X, %.8X)",
+      one,
+      version,
+      data_ptr);
+
+  if (data_ptr) {
+    SHIM_SET_MEM_16(data_ptr + 0x000, version);
+    SHIM_SET_MEM_16(data_ptr + 0x002, 0);
+    SHIM_SET_MEM_32(data_ptr + 0x004, 0);
+    SHIM_SET_MEM_32(data_ptr + 0x105, 0);
+    SHIM_SET_MEM_16(data_ptr + 0x186, 0);
+    SHIM_SET_MEM_16(data_ptr + 0x188, 0);
+    SHIM_SET_MEM_32(data_ptr + 0x190, 0);
+  }
+
+  SHIM_SET_RETURN(0);
+}
+
+
+}  // namespace xam
+}  // namespace kernel
+}  // namespace xe
+
+
+void xe::kernel::xam::RegisterNetExports(
+    ExportResolver* export_resolver, XamState* state) {
+  SHIM_SET_MAPPING("xam.xex", NetDll_XNetStartup, state);
+  SHIM_SET_MAPPING("xam.xex", NetDll_WSAStartup, state);
+}