forked from mirrors/gecko-dev
8a62107260
For ELF we directly create a section with the value inside it Differential Revision: https://phabricator.services.mozilla.com/D199658
99 lines
2.7 KiB
Python
99 lines
2.7 KiB
Python
# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this file,
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# You can obtain one at http://mozilla.org/MPL/2.0/.
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# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
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# vim: set filetype=python:
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# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distibuted with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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import os
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from io import StringIO
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import buildconfig
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from mozbuild.preprocessor import Preprocessor
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def main(output, input_file):
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with open(input_file) as fh:
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objs = [l.strip() for l in fh.readlines()]
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write_file(output, None)
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return set(
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os.path.join("build", o)
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for o in objs
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if os.path.splitext(os.path.basename(o))[0] != "buildid"
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)
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def tests(output, buildid):
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write_file(output, buildid)
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def write_file(output, maybe_buildid):
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pp = Preprocessor()
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pp.out = StringIO()
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pp.do_include(os.path.join(buildconfig.topobjdir, "buildid.h"))
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buildid = pp.context["MOZ_BUILDID"] if maybe_buildid is None else maybe_buildid
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keyword_extern = "extern" if maybe_buildid is None else ""
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attribute_used = "__attribute__((used))" if maybe_buildid is not None else ""
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output.write(
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"""
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#include "buildid_section.h"
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#if defined(XP_DARWIN) || defined(XP_WIN)
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#define SECTION_NAME_ATTRIBUTE __attribute__((section(MOZ_BUILDID_SECTION_NAME)))
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#else
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#define SECTION_NAME_ATTRIBUTE
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#endif
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{extern} const char gToolkitBuildID[] SECTION_NAME_ATTRIBUTE {used} = "{buildid}";
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""".format(
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extern=keyword_extern,
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used=attribute_used,
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buildid=buildid,
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)
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)
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if buildconfig.substs.get("TARGET_KERNEL") not in (
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"Darwin",
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"WINNT",
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):
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elf_note = """
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#include <elf.h>
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#define note_name "mzbldid"
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#define note_desc "{buildid}"
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// This is not defined on Android?
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// Android also hardcodes "1"
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// https://android.googlesource.com/platform/ndk/+/refs/tags/ndk-r26c/sources/crt/crtbrand.S#35
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#ifndef NT_VERSION
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#define NT_VERSION 1
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#endif
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struct note {{
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Elf32_Nhdr header; // Elf32 or Elf64 doesn't matter, they're the same size
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char name[(sizeof(note_name) + 3) / 4 * 4];
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char desc[(sizeof(note_desc) + 3) / 4 * 4];
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}};
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{extern} const struct note gNoteToolkitBuildID __attribute__((section(MOZ_BUILDID_SECTION_NAME), aligned(4), used)) = {{
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{{ sizeof(note_name), sizeof(note_desc), NT_VERSION }},
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note_name,
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note_desc
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}};
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"""
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output.write(
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"{}".format(
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elf_note.format(
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extern=keyword_extern,
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buildid=buildid,
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)
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)
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)
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