1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
# 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/.
# -*- 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 buildconfig
from variables import get_buildid
def main(output, input_file):
with open(input_file) as fh:
objs = [l.strip() for l in fh.readlines()]
write_file(output, None)
return set(
os.path.join("build", o)
for o in objs
if os.path.splitext(os.path.basename(o))[0] != "buildid"
)
def tests(output, buildid):
write_file(output, buildid)
def write_file(output, maybe_buildid):
buildid = maybe_buildid or get_buildid()
keyword_extern = "extern" if maybe_buildid is None else ""
attribute_used = "__attribute__((used))" if maybe_buildid is not None else ""
output.write(
f"""
#include "buildid_section.h"
#if defined(XP_DARWIN) || defined(XP_WIN)
#define SECTION_NAME_ATTRIBUTE __attribute__((section(MOZ_BUILDID_SECTION_NAME)))
#else
#define SECTION_NAME_ATTRIBUTE
#endif
{keyword_extern} const char gToolkitBuildID[] SECTION_NAME_ATTRIBUTE {attribute_used} = "{buildid}";
"""
)
if buildconfig.substs.get("TARGET_KERNEL") not in (
"Darwin",
"WINNT",
):
elf_note = """
#include <elf.h>
#define note_name "mzbldid"
#define note_desc "{buildid}"
// This is not defined on Android?
// Android also hardcodes "1"
// https://android.googlesource.com/platform/ndk/+/refs/tags/ndk-r26c/sources/crt/crtbrand.S#35
#ifndef NT_VERSION
#define NT_VERSION 1
#endif
#if defined(__clang__)
#define NO_SANITIZE_ADDRESS __attribute__((no_sanitize("address")))
#else
// gcc doesn't sanitize address of const variable
#define NO_SANITIZE_ADDRESS
#endif
struct note {{
Elf32_Nhdr header; // Elf32 or Elf64 doesn't matter, they're the same size
char name[(sizeof(note_name) + 3) / 4 * 4];
char desc[(sizeof(note_desc) + 3) / 4 * 4];
}};
{extern} const struct note gNoteToolkitBuildID NO_SANITIZE_ADDRESS __attribute__((section(MOZ_BUILDID_SECTION_NAME), aligned(4), used)) = {{
{{ sizeof(note_name), sizeof(note_desc), NT_VERSION }},
note_name,
note_desc
}};
"""
output.write(
"{}".format(
elf_note.format(
extern=keyword_extern,
buildid=buildid,
)
)
)
|
