preprocess_libffi_asm.py

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# -*- 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 distibuted with this

# file, You can obtain one at http://mozilla.org/MPL/2.0/.

import os

import shlex

import subprocess

import buildconfig

import mozpack.path as mozpath

def main(output, input_asm, ffi_h, ffi_config_h, defines, includes):

    defines = shlex.split(defines)

    includes = shlex.split(includes)

    # CPP uses -E which generates #line directives. -EP suppresses them.

    # -TC forces the compiler to treat the input as C.

    cpp = buildconfig.substs["CPP"] + ["-EP"] + ["-TC"]

    input_asm = mozpath.relpath(input_asm, os.getcwd())

    args = cpp + defines + includes + [input_asm]

    print(" ".join(args))

    preprocessed = subprocess.check_output(args)

    output.write(preprocessed)