Add ARM support to tools/grokdump.py

tools/disasm.py

Index: tools/disasm.py
diff --git a/tools/disasm.py b/tools/disasm.py
index 681b4256dfe005058a409ea960377d6580579dd6..6fa81cab9388fe232540fb43aacf586f402ec580 100644
--- a/tools/disasm.py
+++ b/tools/disasm.py
@@ -53,12 +53,12 @@ _ARCH_MAP = {
 }
 
 
-def GetDisasmLines(filename, offset, size, arch, inplace):
+def GetDisasmLines(filename, offset, size, arch, inplace, arch_flags=""):
   tmp_name = None
   if not inplace:
     # Create a temporary file containing a copy of the code.
     assert arch in _ARCH_MAP, "Unsupported architecture '%s'" % arch
-    arch_flags = _ARCH_MAP[arch]
+    arch_flags = arch_flags + " " +  _ARCH_MAP[arch]
     tmp_name = tempfile.mktemp(".v8code")
     command = "dd if=%s of=%s bs=1 count=%d skip=%d && " \
               "%s %s -D -b binary %s %s" % (
@@ -66,8 +66,8 @@ def GetDisasmLines(filename, offset, size, arch, inplace):
       OBJDUMP_BIN, ' '.join(_COMMON_DISASM_OPTIONS), arch_flags,
       tmp_name)
   else:
-    command = "%s %s --start-address=%d --stop-address=%d -d %s " % (
-      OBJDUMP_BIN, ' '.join(_COMMON_DISASM_OPTIONS),
+    command = "%s %s %s --start-address=%d --stop-address=%d -d %s " % (
+      OBJDUMP_BIN, ' '.join(_COMMON_DISASM_OPTIONS), arch_flags,
       offset,
       offset + size,
       filename)