PNaCl: Add more MIPS support to the toolchain

pnacl/driver/driver_tools.py

 #!/usr/bin/python
 # Copyright (c) 2012 The Native Client Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 #
 # IMPORTANT NOTE: If you make local mods to this file, you must run:
 #   %  pnacl/build.sh driver
 # in order for them to take effect in the scons build.  This command
 # updates the copy in the toolchain/ tree.
 #
@@ skipping 415 matching lines @@
 @SimpleCache
 def IsNativeArchive(filename):
   return IsArchive(filename) and not IsBitcodeArchive(filename)
 
 class ELFHeader(object):
   ELF_MAGIC = '\x7fELF'
   ELF_TYPES = { 1: 'REL',  # .o
                 2: 'EXEC', # .exe
                 3: 'DYN' } # .so
   ELF_MACHINES = {  3: '386',
+                    8: 'MIPS',
                    40: 'ARM',
                    62: 'X86_64' }
   ELF_OSABI = { 0: 'UNIX',
                 3: 'LINUX',
                 123: 'NACL' }
   ELF_ABI_VER = { 0: 'NONE',
                   7: 'NACL' }
 
   def __init__(self, e_type, e_machine, e_osabi, e_abiver):
     self.type = self.ELF_TYPES[e_type]
@@ skipping 485 matching lines @@
               '386'   : 'X8632',
               '686'   : 'X8632',
 
               'amd64' : 'X8664',
               'x86_64': 'X8664',
               'x86-64': 'X8664',
               'x8664' : 'X8664',
 
               'arm'   : 'ARM',
               'armv7' : 'ARM',
-              'arm-thumb2' : 'ARM' }
+              'arm-thumb2' : 'ARM',
+
+              'mips32': 'MIPS32',
+              'mips'  : 'MIPS32',
+              }
   if arch not in archfix:
     Log.Fatal('Unrecognized arch "%s"!', arch)
   return archfix[arch]
 
 def IsWindowsPython():
   return 'windows' in platform.system().lower()
 
 def SetupCygwinLibs():
   bindir = env.getone('DRIVER_BIN')
   os.environ['PATH'] += os.pathsep + pathtools.tosys(bindir)
@@ skipping 144 matching lines @@
         # Last step
         step_output = self.output
       else:
         # Intermediate step
         if self.use_names_for_input:
           step_output = self.namegen.TempNameForInput(self.input, output_type)
         else:
           step_output = self.namegen.TempNameForOutput(output_type)
       callback(step_input, step_output, **extra)
       step_input = step_output