Fix a bunch of issues blocking 64-bit orderfile generation.

tools/cygprofile/symbol_extractor.py

Index: tools/cygprofile/symbol_extractor.py
diff --git a/tools/cygprofile/symbol_extractor.py b/tools/cygprofile/symbol_extractor.py
index 5fd67a1d65bd25aae696fb6674e717f5e096e4d3..f0046d2eedb412e1fa5d02e6b5672abaa0105e2b 100755
--- a/tools/cygprofile/symbol_extractor.py
+++ b/tools/cygprofile/symbol_extractor.py
@@ -17,15 +17,18 @@ sys.path.insert(
                     'scripts'))
 import symbol
 
-
-# TODO(lizeb): Change symbol.ARCH to the proper value when "arm" is no longer
-# the only possible value.
 _OBJDUMP_BINARY = symbol.ToolPath('objdump')
 
 
 SymbolInfo = collections.namedtuple('SymbolInfo', ('name', 'offset', 'size',
                                                    'section'))
 
+def SetArchitecture(arch):
+  """Set the architecture for binaries to be symbolized."""
+  symbol.ARCH = arch
+  global _OBJDUMP_BINARY
+  _OBJDUMP_BINARY = symbol.ToolPath('objdump')
+
 
 def _FromObjdumpLine(line):
   """Create a SymbolInfo by parsing a properly formatted objdump output line.