author Nathan Froyd <froydnj@mozilla.com>
Fri, 26 Oct 2018 13:00:41 -0400
changeset 443178 94c9a52a4f1da95c6a260cffe391cb024ede58d2
parent 359103 6d99c685aea3eb5433729a7ac9b5d2c63b6a1d5b
child 453355 3f00314f0fe03d7b9166323326a136349b17b736
permissions -rw-r--r--
Bug 1480550 - add ctypes support for aarch64 windows; r=dmajor The bulk of this patch is the new win64.asm, which is a more-or-less direct copy of aarch64's sysv.S file, with modifications for armasm64's peculiarities. The changes to ffi.c were minimal, mostly so that arithmetic on `void*` conforms to the C standard.

# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
# vim: set filetype=python:
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

def force_system_ffi(target):
    # Pre-emptively move to system ffi for non-tier one platforms.
    if target.cpu not in ('x86', 'x86_64', 'arm', 'aarch64'):
        return True

imply_option('--with-system-ffi', force_system_ffi, "target")

          help='Use system libffi (located with pkgconfig)')

use_system_ffi = depends_if('--with-system-ffi')(lambda _: True)

system_ffi = pkg_check_modules('MOZ_FFI', 'libffi > 3.0.9',

building_ffi = depends(system_ffi)(lambda v: v is None)

set_config('MOZ_SYSTEM_FFI', depends_if(system_ffi)(lambda _: True))
add_old_configure_assignment('MOZ_SYSTEM_FFI', depends_if(system_ffi)(lambda _: True))

# Target selection, based on ffi/configure.ac.
@depends(target, when=building_ffi)
def ffi_target(target):
    if target.cpu not in ('x86', 'x86_64', 'arm', 'aarch64'):
        die('Building libffi from the tree is not supported on this platform. '
            'Use --with-system-ffi instead.')

    if target.os == 'WINNT':
        target_dir, target_name = {
            'x86_64': ('x86', 'X86_WIN64'),
            'x86': ('x86', 'X86_WIN32'),
            'aarch64': ('aarch64', 'ARM64_WIN64'),
    elif target.os == 'OSX':
        target_dir = 'x86'
        target_name = 'X86_DARWIN'
    elif target.cpu == 'arm':
        target_dir = 'arm'
        target_name = 'ARM'
    elif target.cpu == 'aarch64':
        target_dir = 'aarch64'
        target_name = 'AARCH64'
        target_dir = 'x86'
        target_name = target.cpu.upper()

    return namespace(

set_config('FFI_TARGET', ffi_target.name)
set_config('FFI_TARGET_DIR', ffi_target.dir)