PNaCl. Enables x32 libraries for non-sfi runtime.

pnacl/driver/pnacl-translate.py

Index: pnacl/driver/pnacl-translate.py
diff --git a/pnacl/driver/pnacl-translate.py b/pnacl/driver/pnacl-translate.py
index eac4bf3dc77ccd12ad5b95193d53aed658007d73..81224234cfbf61b5eff079013069e869a3e20dad 100755
--- a/pnacl/driver/pnacl-translate.py
+++ b/pnacl/driver/pnacl-translate.py
@@ -240,7 +240,9 @@ def SetUpArch():
              'X8664': 'x86_64-none-nacl-gnu',
              'ARM': 'armv7a-none-nacl-gnueabihf',
              'MIPS32': 'mipsel-none-nacl-gnu'},
-        'linux': {'X8632': 'i686-linux-gnu'},
+        'linux':
+            {'X8632': 'i686-linux-gnu',
+             'X8664': 'x86_64-linux-gnux32'},
         'mac': {'X8632': 'i686-apple-darwin'}}
   env.set('TRIPLE', triple_map[env.getone('TARGET_OS')][base_arch])
 
@@ -281,7 +283,7 @@ def SetUpArch():
   env.append('SZ_FLAGS_ARCH', '--sandbox=' +
              ('1' if env.getone('TARGET_OS') == 'nacl' else '0'))
   env.append('SZ_FLAGS_ARCH', '--target=' + base_arch.lower())
-  if base_arch != 'X8632':
+  if base_arch not in ['ARM32', 'X8632', 'X8664']:

[Jim Stichnoth, 2015/12/22 17:36:27]

This needs more precision about which configurations Subzero supports.

I don't think ARM belongs here at all, for lack of vector support (not to
mention filetype=obj and sandboxing).

X8664 doesn't yet support sandboxing so that should be tested here.

[John, 2015/12/22 18:12:00]

I was thinking about that. Reverting for now, until the targets are ready (plus
this is not needed for enabling the x32 unsandboxed runtime build.)

     env.set('SZ_UNSUPPORTED', '1')
     # Hard-fail on an unsupported architecture.
     if env.getbool('USE_SZ'):