Initial implementation of Bare Metal Mode for NaCl.

components/nacl.gyp

 # Copyright 2013 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'includes': [
     'nacl/nacl_defines.gypi',
@@ skipping 194 matching lines @@
                 }],
                 ['os_posix == 1 and OS != "mac"', {
                   'conditions': [
                     ['linux_use_tcmalloc==1', {
                       'dependencies': [
                         '../base/allocator/allocator.gyp:allocator',
                       ],
                     }],
                   ],
                 }],
+                ['target_arch == "ia32"', {

[Mark Seaborn, 2013/12/06 21:42:37]

Can we enable this for all architectures, please?  For maintainability, we want
to have this code tested on the Chromium trybots, which primarily test x86-64. 
(There is a "linux_rel_precise32" trybot, but the default trybot runs and the
Commit Queue only cover x86-64.)

Initially we can just use the native pointer size, so 64-bit on x86-64.  We
might to revisit that later.  e.g. If we use the PNaCl toolchain to translate
pexes to BMM executables for testing on the bots, this will probably need to use
32-bit pointers.  But let's cross that bridge when we come to it.  For now, this
just means we should use uintptr_t in the ELF loader rather than uint32_t.

[hidehiko, 2013/12/09 07:43:39]

I see. Done.

+                  'sources': [
+                    # Non SFI mode is currently experimental and available
+                    # only for 32-bits linux environment.
+                    # TODO(hidehiko): Support it on arm.
+                    'nacl/loader/nonsfi/nonsfi_error_code.h',
+                    'nacl/loader/nonsfi/nonsfi_main.cc',
+                    'nacl/loader/nonsfi/nonsfi_main.h',
+                    'nacl/loader/nonsfi/elf_util.cc',
+                    'nacl/loader/nonsfi/elf_util.h',
+                  ],
+                }]
               ],
               'cflags': ['-fPIE'],
               'link_settings': {
                 'ldflags': ['-pie'],
               },
             },
           ],
         }],
         ['OS=="win" and target_arch=="ia32"', {
           'targets': [
@@ skipping 133 matching lines @@
         'nacl/common/nacl_types.h',
         'nacl/common/pnacl_types.cc',
         'nacl/common/pnacl_types.h',
       ],
       'include_dirs': [
         '..',
       ],
     },
   ]
 }