Initial implementation of Bare Metal Mode for NaCl.

components/nacl.gyp

Index: components/nacl.gyp
diff --git a/components/nacl.gyp b/components/nacl.gyp
index 361ac061d2f5cd92a36d93dc7be78d6446d81754..07febb6997f700a91e6310cb09932dd14b3bf788 100644
--- a/components/nacl.gyp
+++ b/components/nacl.gyp
@@ -212,6 +212,18 @@
                     }],
                   ],
                 }],
+                ['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': {