Early micro assembler

src/arch/micro_asm.py:
    Micro assembler
src/arch/micro_asm_test.py:
    Test script for the micro assembler. This probably should go somewhere else eventually.

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extra : convert_revision : 277fdadec94763ae657f55f501704693b81e0015

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diff --git a/src/arch/micro_asm_test.py b/src/arch/micro_asm_test.py
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+# Copyright (c) 2007 The Regents of The University of Michigan
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met: redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer;
+# redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution;
+# neither the name of the copyright holders nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Authors: Gabe Black
+
+from micro_asm import MicroAssembler, Macroop, Rom
+
+class Bah(object):
+    def __init__(self):
+        self.mnemonic = "bah"
+
+class Bah_Tweaked(object):
+    def __init__(self):
+        self.mnemonic = "bah_tweaked"
+
+class Hoop(object):
+    def __init__(self, first_param, second_param):
+        self.mnemonic = "hoop_%s_%s" % (first_param, second_param)
+    def __str__(self):
+        return "%s" % self.mnemonic
+
+class Dah(object):
+    def __init__(self):
+        self.mnemonic = "dah"
+
+microops = {
+    "bah": Bah,
+    "hoop": Hoop,
+    "dah": Dah
+}
+
+class TestMacroop(Macroop):
+    def tweak(self):
+        microops["bah"] = Bah_Tweaked
+    def untweak(self):
+        microops["bah"] = Bah
+
+    def __init__(self, name):
+        super(TestMacroop, self).__init__(name)
+        self.directives = {
+            "tweak": self.tweak,
+            "untweak": self.untweak
+        }
+
+assembler = MicroAssembler(TestMacroop, microops, Rom('main ROM'))
+
+testAssembly = '''
+def rom {
+    goo: bah
+    extern la: hoop 4*8, "a"
+};
+
+def macroop squishy {
+    .tweak
+    bah
+    .untweak
+    bah
+    dah
+    .tweak
+};
+
+def macroop squashy {
+    bah
+};
+
+def macroop (bar);
+'''
+assembler.assemble(testAssembly)