Python OPTIONS.is_i686方法代码示例

# 需要导入模块: from build_options import OPTIONS [as 别名]
# 或者: from build_options.OPTIONS import is_i686 [as 别名]
def _generate_libgcc_ninja():
  # Currently, we need to generate libgcc.a only for Bare Metal mode.
  if not OPTIONS.is_bare_metal_build():
    return

  # TODO(crbug.com/283798): Build libgcc by ourselves.
  rule_name = 'generate_libgcc'
  n = ninja_generator.NinjaGenerator(rule_name)
  if OPTIONS.is_i686():
    # We use libgcc.a in Android NDK for Bare Metal mode as it is
    # compatible with Bionic.
    orig_libgcc = ('third_party/ndk/toolchains/x86-4.6/prebuilt/'
                   'linux-x86/lib/gcc/i686-linux-android/4.6/libgcc.a')
    # This libgcc has unnecessary symbols such as __CTORS__ in
    # _ctors.o. We define this symbol in crtbegin.o, so we need to
    # remove this object from the archive.
    # Functions in generic-morestack{,-thread}.o and morestack.o are not
    # needed if one is not using split stacks and it interferes with our
    # process emulation code.
    remove_object = ('_ctors.o generic-morestack.o generic-morestack-thread.o '
                     'morestack.o')
  elif OPTIONS.is_arm():
    # NDK's libgcc.a is not compatible with Bare Metal mode because
    # Android NDK does not use -mfloat-abi=hard. We just use libgcc
    # from Goobuntu.
    # TODO(crbug.com/340598): Check if we can use NDK's libgcc.a if we
    # decide to use softfp.
    orig_libgcc = os.path.join(
        ninja_generator.get_libgcc_installed_dir_for_bare_metal(), 'libgcc.a')
    # This object depends on some glibc specific symbols around
    # stdio. As no objects in libgcc.a use _eprintf, we can simply
    # remove this object.
    remove_object = '_eprintf.o'
  n.rule(rule_name,
         command=('cp $in $out.tmp && ar d $out.tmp %s && mv $out.tmp $out' %
                  remove_object),
         description=rule_name + ' $out')
  n.build(ninja_generator.get_libgcc_for_bare_metal(), rule_name, orig_libgcc)

# 需要导入模块: from build_options import OPTIONS [as 别名]
# 或者: from build_options.OPTIONS import is_i686 [as 别名]
def _filter_libc(vars):
  if vars.is_static():
    return False

  vars.get_sources().remove('android/bionic/libc/bionic/pthread_debug.cpp')
  vars.get_sources().extend([
      'android/bionic/libc/arch-nacl/bionic/atexit.c',
      'android/bionic/libc/arch-nacl/syscalls/clock_nanosleep.c',
      'android/bionic/libc/arch-nacl/syscalls/irt_syscalls.c',
      'android/bionic/libc/arch-nacl/syscalls/nanosleep.c',
      'android/bionic/libc/arch-nacl/syscalls/sched_yield.c',
      'android/bionic/libc/arch-nacl/tmp/libc_stubs.c',
      'android/bionic/libc/string/rindex.c'
  ])
  if OPTIONS.is_i686():
    vars.get_sources().append(
        'android/bionic/libc/arch-x86/bionic/setjmp.S')
  if OPTIONS.is_x86_64():
    vars.get_sources().append(
        'android/bionic/libc/arch-amd64/bionic/setjmp.S')
    vars.get_includes().insert(0, 'android/bionic/libc/arch-amd64/include')
  if OPTIONS.is_arm():
    vars.get_sources().append(
        'android/bionic/libc/arch-arm/bionic/setjmp.S')
    # Remove the sources that contain the functions we implement.
    vars.get_sources().remove(
        'android/bionic/libc/arch-arm/bionic/atexit_legacy.c')
    if OPTIONS.is_bare_metal_build():
      # TODO(crbug.com/319020): Use Bare Metal IRT instead of
      # calling a syscall directly.
      vars.get_sources().extend([
          'android/bionic/libc/arch-arm/bionic/_setjmp.S',
          'android/bionic/libc/arch-arm/bionic/sigsetjmp.S',
          'android/bionic/libc/arch-nacl/syscalls/cacheflush.c'])
  vars.get_includes().append('android/bionic/libc/arch-nacl/syscalls')
  vars.get_implicit_deps().extend([build_common.get_bionic_crtbegin_so_o(),
                                   build_common.get_bionic_crtend_o()])
  # This looks weird libc depends on libdl, but the upstream
  # bionic also does the same thing. Note that libdl.so just has
  # stub functions and their actual implementations are in the
  # loader (see third_party/android/bionic/linker/dlfcn.c).
  vars.get_shared_deps().append('libdl')
  vars.get_whole_archive_deps().append('libc_bionic')
  vars.get_whole_archive_deps().append('libc_freebsd')
  vars.get_whole_archive_deps().append('libc_netbsd')
  # We do not support stack protector on NaCl, but NDK may require a
  # symbol in this file. So, we always link this.
  vars.get_whole_archive_deps().append('libbionic_ssp')
  vars.get_whole_archive_deps().append('libc_tzcode')
  # Let dlmalloc not use sbrk as NaCl Bionic does not provide brk/sbrk.
  vars.get_cflags().append('-DHAVE_MORECORE=0')
  _remove_unnecessary_defines(vars)
  if OPTIONS.is_arm():
    # libc/upstream-dlmalloc/malloc.c checks "linux" to check if
    # mremap is available, which we do not have. We need this fix
    # only for Bare Metal ARM because NaCl toolchain does not
    # define "linux" and Android undefines "linux" by default for
    # x86 (android/build/core/combo/TARGET_linux-x86.mk).
    vars.get_cflags().append('-Ulinux')
  vars.get_generator_args()['is_system_library'] = True
  if OPTIONS.is_arm():
    # Set False to 'link_crtbegin' because Android.mk for libc.so
    # compiles android/bionic/libc/arch-arm/bionic/crtbegin_so.c by
    # default with -DCRT_LEGACY_WORKAROUND to export the __dso_handle
    # symbol.
    #
    # __dso_handle is passed to __cxa_atexit so that libc knows which
    # atexit handler belongs to which module. In general, __dso_handle
    # should be a private symbol. Otherwise, a module (say A) can
    # depend on __dso_handle in another module (B), and the atexit
    # handler in A will not be called when the module A is unloaded.
    #
    # However, it seems the old version of Android had a bug and
    # __dso_handle was exposed. Several NDKs depend on __dso_handle
    # in libc.so. To execute such binaries directly, we need to define
    # a public __dso_handle, too. This effectively means atexit
    # handlers in such NDKs will never be called, as we will never
    # unload libc.so. This is a known upstream issue. See
    # third_party/android/bionic/ABI-bugs.txt.
    #
    # Note it is OK not to have crtbegin_so.o as the first object when
    # we link libc.so because we are using init_array/fini_array,
    # which do not require specific watchdogs, for ARM.
    vars.get_generator_args()['link_crtbegin'] = False
  return True

# 需要导入模块: from build_options import OPTIONS [as 别名]
# 或者: from build_options.OPTIONS import is_i686 [as 别名]
def _filter_libc_common(vars):
  sources = vars.get_sources()
  _remove_assembly_source(sources)
  # libc_common is used from both the loader and libc.so. Functions
  # which are necessary for the bionic loader must be in this list.
  sources.extend([
      # TODO(crbug.com/243244): If possible, move arch-nacl/ files into a
      # separate archive and build them with -Werror.
      'android/bionic/libc/arch-nacl/bionic/__get_sp.c',
      'android/bionic/libc/arch-nacl/bionic/__set_tls.c',
      'android/bionic/libc/arch-nacl/bionic/clone.c',
      'android/bionic/libc/arch-nacl/bionic/popcount.c',
      'android/bionic/libc/arch-nacl/syscalls/__getcwd.c',
      'android/bionic/libc/arch-nacl/syscalls/__open.c',
      'android/bionic/libc/arch-nacl/syscalls/_exit.c',
      'android/bionic/libc/arch-nacl/syscalls/_exit_thread.c',
      'android/bionic/libc/arch-nacl/syscalls/clock_getres.c',
      'android/bionic/libc/arch-nacl/syscalls/clock_gettime.c',
      'android/bionic/libc/arch-nacl/syscalls/close.c',
      'android/bionic/libc/arch-nacl/syscalls/dup.c',
      'android/bionic/libc/arch-nacl/syscalls/dup2.c',
      'android/bionic/libc/arch-nacl/syscalls/enosys.c',
      'android/bionic/libc/arch-nacl/syscalls/fdatasync.c',
      'android/bionic/libc/arch-nacl/syscalls/fstat.c',
      'android/bionic/libc/arch-nacl/syscalls/fsync.c',
      'android/bionic/libc/arch-nacl/syscalls/futex.c',
      'android/bionic/libc/arch-nacl/syscalls/getdents.c',
      'android/bionic/libc/arch-nacl/syscalls/getpid.c',
      'android/bionic/libc/arch-nacl/syscalls/gettid.c',
      'android/bionic/libc/arch-nacl/syscalls/gettimeofday.c',
      'android/bionic/libc/arch-nacl/syscalls/getuid.c',
      'android/bionic/libc/arch-nacl/syscalls/lseek.c',
      'android/bionic/libc/arch-nacl/syscalls/lseek64.c',
      'android/bionic/libc/arch-nacl/syscalls/lstat.c',
      'android/bionic/libc/arch-nacl/syscalls/mmap.c',
      'android/bionic/libc/arch-nacl/syscalls/mprotect.c',
      'android/bionic/libc/arch-nacl/syscalls/munmap.c',
      'android/bionic/libc/arch-nacl/syscalls/nacl_stat.c',
      'android/bionic/libc/arch-nacl/syscalls/nacl_timespec.c',
      'android/bionic/libc/arch-nacl/syscalls/nacl_timeval.c',
      'android/bionic/libc/arch-nacl/syscalls/read.c',
      'android/bionic/libc/arch-nacl/syscalls/stat.c',
      'android/bionic/libc/arch-nacl/syscalls/unlink.c',
      'android/bionic/libc/arch-nacl/syscalls/write.c',
      'android/bionic/libc/arch-nacl/syscalls/writev.c',
      'android/bionic/libc/arch-nacl/tmp/raw_print.c',
      # TODO(crbug.com/352917): Use assembly version on Bare Metal ARM.
      'android/bionic/libc/bionic/memcmp.c',
      'android/bionic/libc/bionic/memcpy.c',
      'android/bionic/libc/bionic/property_service.c',
      'android/bionic/libc/string/ffs.c',
      'android/bionic/libc/string/strcat.c',
      'android/bionic/libc/string/strcmp.c',
      'android/bionic/libc/string/strlen.c'])
  if OPTIONS.is_nacl_build():
    # They define SFI NaCl specific functions for dynamic code.
    sources.extend([
        'android/bionic/libc/arch-nacl/syscalls/__allocate_nacl_dyncode.c',
        'android/bionic/libc/arch-nacl/syscalls/nacl_dyncode_create.c',
        'android/bionic/libc/arch-nacl/syscalls/nacl_dyncode_delete.c',
        'android/bionic/libc/arch-nacl/syscalls/nacl_list_mappings.c'])

  if OPTIONS.is_arm():
    # TODO(crbug.com/352917): Use assembly version on Bare Metal ARM.
    sources.extend([
        'android/bionic/libc/bionic/__memcpy_chk.cpp',
        'android/bionic/libc/bionic/__memset_chk.cpp',
        'android/bionic/libc/bionic/__strcat_chk.cpp',
        'android/bionic/libc/bionic/__strcpy_chk.cpp'])
  else:
    sources.extend([
        'android/bionic/libc/bionic/memchr.c',
        'android/bionic/libc/bionic/memrchr.c',
        'android/bionic/libc/bionic/memmove.c',
        'android/bionic/libc/bionic/strnlen.c',
        'android/bionic/libc/string/bcopy.c',
        'android/bionic/libc/string/index.c',
        'android/bionic/libc/string/strncmp.c',
        'android/bionic/libc/string/strrchr.c',
        'android/bionic/libc/upstream-freebsd/lib/libc/string/wcschr.c',
        'android/bionic/libc/upstream-freebsd/lib/libc/string/wcsrchr.c',
        'android/bionic/libc/upstream-freebsd/lib/libc/string/wcscmp.c',
        'android/bionic/libc/upstream-freebsd/lib/libc/string/wcslen.c'])

  if OPTIONS.is_arm():
    _filter_libc_common_for_arm(vars, sources)
  elif OPTIONS.is_i686():
    _filter_libc_common_for_i686(vars, sources)
  elif OPTIONS.is_x86_64():
    _filter_libc_common_for_x86_64(vars, sources)

  # NaCl does not have fork so we do not need the fork wrapper
  # which does preparation before we actually run fork system call.
  sources.remove('android/bionic/libc/bionic/fork.c')
  # lseek64 in this file splits off64_t into two integer values to
  # make assembly code easier. We can define lseek64 in C so we do
  # not need this wrapper.
  sources.remove('android/bionic/libc/bionic/lseek64.c')
  if OPTIONS.is_x86_64() or OPTIONS.is_bare_metal_i686():
    # We define __get_tls in nacl_read_tp.c.
#.........这里部分代码省略.........