Initial libjit skeleton.

Not currently generating instructions, but most of the flow is right up to
that point. A lot of work required to refactor the emitter, but wanted to
get this checked in.

src/xenia/cpu/libjit/libjit_emit.h

@@ -0,0 +1,43 @@
+/**
+ ******************************************************************************
+ * 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. *
+ ******************************************************************************
+ */
+
+#ifndef XENIA_CPU_LIBJIT_LIBJIT_EMIT_H_
+#define XENIA_CPU_LIBJIT_LIBJIT_EMIT_H_
+
+#include <xenia/cpu/libjit/libjit_emitter.h>
+#include <xenia/cpu/ppc/instr.h>
+#include <xenia/cpu/ppc/state.h>
+
+
+namespace xe {
+namespace cpu {
+namespace libjit {
+
+
+void LibjitRegisterEmitCategoryALU();
+void LibjitRegisterEmitCategoryControl();
+void LibjitRegisterEmitCategoryFPU();
+void LibjitRegisterEmitCategoryMemory();
+
+
+#define XEEMITTER(name, opcode, format) int InstrEmit_##name
+
+#define XEREGISTERINSTR(name, opcode) \
+    RegisterInstrEmit(opcode, (InstrEmitFn)InstrEmit_##name);
+
+#define XEINSTRNOTIMPLEMENTED()
+//#define XEINSTRNOTIMPLEMENTED XEASSERTALWAYS
+
+
+}  // namespace libjit
+}  // namespace cpu
+}  // namespace xe
+
+
+#endif  // XENIA_CPU_LIBJIT_LIBJIT_EMIT_H_