Use C source for openssl RC4 calculation instead of ASM

openssl.gyp

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'targets': [
     {
       'target_name': 'openssl',
       'type': '<(component)',
       'includes': [
@@ skipping 47 matching lines @@
         }],
         ['target_arch == "ia32"', {
           'sources': [ '<@(openssl_x86_sources)' ],
           'sources!': [ '<@(openssl_x86_source_excludes)' ],
           'defines': [ '<@(openssl_x86_defines)' ],
           'defines!': [ 'OPENSSL_NO_ASM' ],
         }],
         ['target_arch == "x64"', {
           'sources': [ '<@(openssl_x86_64_sources)' ],
           'sources!': [ '<@(openssl_x86_64_source_excludes)' ],
+          'conditions': [
+            ['OS != "android"', {
+              # Because rc4-x86_64.S has a problem,
+              # We use the C rc4 source instead of the ASM source.
+              # This hurts performance, but it's not a problem
+              # because no production code uses openssl on x86-64.
+              'sources/': [
+                ['exclude', 'openssl/crypto/rc4/asm/rc4-x86_64\\.S' ],
+                ['include', 'openssl/crypto/rc4/rc4_enc\\.c' ],
+                ['include', 'openssl/crypto/rc4/rc4_skey\\.c' ],
+              ],
+            }]
+          ],
           'defines': [ '<@(openssl_x86_64_defines)' ],
           'defines!': [ 'OPENSSL_NO_ASM' ],
           'variables': {
             # Ensure the 64-bit opensslconf.h header is used.
             'openssl_include_dirs+': [ 'config/x64' ],
           },
         }],
         ['component == "shared_library"', {
           'cflags!': ['-fvisibility=hidden'],
         }],
@@ skipping 21 matching lines @@
       },
     },
   ],
 }
 
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