1//
2// Copyright (C) 2018 The Android Open Source Project
3//
4// Licensed under the Apache License, Version 2.0 (the "License");
5// you may not use this file except in compliance with the License.
6// You may obtain a copy of the License at
7//
8//      http://www.apache.org/licenses/LICENSE-2.0
9//
10// Unless required by applicable law or agreed to in writing, software
11// distributed under the License is distributed on an "AS IS" BASIS,
12// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13// See the License for the specific language governing permissions and
14// limitations under the License.
15//
16
17package {
18    default_applicable_licenses: ["Android-Apache-2.0"],
19}
20
21cc_library_shared {
22    name: "libnative_bridge_vdso",
23    enabled: false,
24    native_bridge_supported: true,
25    target: {
26        native_bridge: {
27            enabled: true,
28        },
29    },
30    arch: {
31        arm64: {
32            srcs: ["vdso_arm64.S"],
33        },
34        riscv64: {
35            srcs: ["vdso_riscv64.S"],
36        },
37        arm: {
38            srcs: ["vdso_arm.S"],
39        },
40    },
41    export_include_dirs: ["include"],
42    // Make sure we do not drag any dependencies for vdso library (-Wl,--exclude-libs,ALL)
43    ldflags: [
44        "-Wl,--exclude-libs,ALL",
45        "-Wl,-soname,linux-vdso.so.1",
46
47        // TODO(b/146399556): Use -z,separate-code to ensure that each segment's p_offset and
48        // p_vaddr values are equal to work around problems with __libc_init_vdso in Bionic.
49        "-Wl,-z,separate-code",
50        // We need sysv hash style to support vdso-parser:
51        // https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/tools/testing/selftests/vDSO/parse_vdso.c
52        "-Wl,--hash-style=both",
53    ],
54    system_shared_libs: [],
55    // Opt out of native_coverage when opting out of system_shared_libs
56    native_coverage: false,
57    nocrt: true,
58    stl: "none",
59    // no_standard_libs: true,
60    strip: {
61        keep_symbols_and_debug_frame: true,
62    },
63    pack_relocations: false,
64}
65