Work on CPU, codegen skeleton, and thunk.

xenia-build.py

@@ -61,6 +61,7 @@ def discover_commands():
       'pull': PullCommand(),
       'gyp': GypCommand(),
       'build': BuildCommand(),
+      'xethunk': XethunkCommand(),
       'clean': CleanCommand(),
       'nuke': NukeCommand(),
       }
@@ -379,6 +380,33 @@ class BuildCommand(Command):
     return 0
 
 
+class XethunkCommand(Command):
+  """'xethunk' command."""
+
+  def __init__(self, *args, **kwargs):
+    super(XethunkCommand, self).__init__(
+        name='xethunk',
+        help_short='Updates the xethunk.bc file.',
+        *args, **kwargs)
+
+  def execute(self, args, cwd):
+    print 'Building xethunk...'
+    print ''
+
+    path = 'src/cpu/xethunk/xethunk'
+    result = shell_call('clang -emit-llvm -O0 -c %s.c -o %s.bc' % (path, path),
+                        throw_on_error=False)
+    if result != 0:
+      return result
+
+    shell_call('build/llvm/release/bin/llvm-dis %s.bc -o %s.ll' % (path, path))
+
+    shell_call('cat %s.ll' % (path))
+
+    print 'Success!'
+    return 0
+
+
 class CleanCommand(Command):
   """'clean' command."""