Subzero. ARM32. Refactors atomic intrinsics lowering.

pydir/targets.py

 #!/usr/bin/env python2
 
 from collections import namedtuple
 import glob
 
 
 # Why have 'cross_headers':
 # For some reason, clang doesn't know how to find some of the libstdc++
 # headers (c++config.h). Manually add in one of the paths:
 # https://llvm.org/bugs/show_bug.cgi?id=22937
 # Otherwise, we could assume the system has arm-linux-gnueabihf-g++ and
 # use that instead of clang, but so far we've just been using clang for
 # the unsandboxed build.
 def FindARMCrossInclude():
   return glob.glob(
       '/usr/arm-linux-gnueabihf/include/c++/*/arm-linux-gnueabihf')[-1]
 
 
 TargetInfo = namedtuple('TargetInfo',
                         ['target', 'compiler_arch', 'triple', 'llc_flags',
-                         'ld_emu', 'cross_headers'])
+                         'ld_emu', 'sb_emu', 'cross_headers'])
 
 X8632Target = TargetInfo(target='x8632',
                          compiler_arch='x8632',
                          triple='i686-none-linux',
                          llc_flags=['-mcpu=pentium4m'],
                          ld_emu='elf_i386_nacl',
+                         sb_emu='elf_i386_nacl',
                          cross_headers=[])
 
 X8664Target = TargetInfo(target='x8664',
                          compiler_arch='x8664',
                          triple='x86_64-none-linux-gnux32',
                          llc_flags=['-mcpu=x86-64'],
                          ld_emu='elf32_x86_64_nacl',
+                         sb_emu='elf_x86_64_nacl',
                          cross_headers=[])
 
 ARM32Target = TargetInfo(target='arm32',
                          compiler_arch='armv7',
                          triple='armv7a-none-linux-gnueabihf',
                          llc_flags=['-mcpu=cortex-a9',
                                     '-float-abi=hard',
                                     '-mattr=+neon'],
                          ld_emu='armelf_nacl',
+                         sb_emu='armelf_nacl',
                          cross_headers=['-isystem', FindARMCrossInclude()])
 
 def ConvertTripleToNaCl(nonsfi_triple):
   return nonsfi_triple[:nonsfi_triple.find('-linux')] + '-nacl'