Add libbpf-bootstrap-android to directly support amd64 cross-compile to Android aarch64

.github/docker/Dockerfile.ubuntu

@@ -0,0 +1,45 @@
+ARG VERSION="22.04"
+FROM ubuntu:${VERSION}
+
+ARG LLVM_VERSION="14"
+ENV LLVM_VERSION=$LLVM_VERSION
+
+ARG SHORTNAME="jammy"
+ENV SHORTNAME=$SHORTNAME
+
+RUN apt-get update && apt-get install -y curl gnupg
+RUN if [ "${LLVM_VERSION}" = "17" ]; \
+    then \
+        echo "\n\
+deb http://apt.llvm.org/${SHORTNAME}/ llvm-toolchain-${SHORTNAME} main\n\
+deb-src http://apt.llvm.org/${SHORTNAME}/ llvm-toolchain-${SHORTNAME} main\n\
+"  >> /etc/apt/sources.list;\
+    else \
+        echo "\n\
+deb http://apt.llvm.org/${SHORTNAME}/ llvm-toolchain-${SHORTNAME}-${LLVM_VERSION} main\n\
+deb-src http://apt.llvm.org/${SHORTNAME}/ llvm-toolchain-${SHORTNAME}-${LLVM_VERSION} main\n\
+"  >> /etc/apt/sources.list; \
+    fi
+RUN curl -L https://apt.llvm.org/llvm-snapshot.gpg.key | apt-key add -
+
+ARG DEBIAN_FRONTEND="noninteractive"
+ENV TZ="Etc/UTC"
+
+RUN apt-get update && apt-get install -y \
+      libelf-dev \
+      zlib1g-dev \
+      libbfd-dev \
+      clang-${LLVM_VERSION} \
+      libclang-${LLVM_VERSION}-dev \
+      libclang-common-${LLVM_VERSION}-dev \
+      libclang1-${LLVM_VERSION} \
+      llvm-${LLVM_VERSION} \
+      llvm-${LLVM_VERSION}-dev \
+      llvm-${LLVM_VERSION}-runtime \
+      libllvm${LLVM_VERSION} \
+      make pkg-config \
+      rustc cargo rustfmt \
+      sudo \
+      && apt-get -y clean
+
+RUN ln -s /usr/bin/clang-${LLVM_VERSION} /usr/bin/clang && ln -s /usr/bin/llvm-strip-${LLVM_VERSION} /usr/bin/llvm-strip

.github/workflows/build.yml

@@ -0,0 +1,55 @@
+name: libbpf-bootstrap build
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+jobs:
+  build_libbpf_bootstrap:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        llvm: [11, 12, 13, 14, 15, 16, 17]
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        submodules: recursive
+    - name: Build container (20.04)
+      if: ${{ matrix.llvm < 14 }}
+      uses: docker/build-push-action@v3
+      with:
+        push: false
+        build-args: |
+          LLVM_VERSION=${{ matrix.llvm }}
+          VERSION=20.04
+          SHORTNAME=focal
+        file: ./.github/docker/Dockerfile.ubuntu
+        tags: build_container
+    - name: Build container (22.04)
+      if: ${{ matrix.llvm >= 14 }}
+      uses: docker/build-push-action@v3
+      with:
+        push: false
+        build-args: |
+          LLVM_VERSION=${{ matrix.llvm }}
+          VERSION=22.04
+          SHORTNAME=jammy
+        file: ./.github/docker/Dockerfile.ubuntu
+        tags: build_container
+    - name: Build examples/c
+      run: |
+        docker run \
+          -v $(pwd):/libbpf-bootstrap \
+          build_container \
+          /bin/bash -c \
+          'cd /libbpf-bootstrap/examples/c && make -j`nproc`'
+    - name: Build examples/rust
+      run: |
+        docker run \
+          -v $(pwd):/libbpf-bootstrap \
+          build_container \
+          /bin/bash -c \
+          'cd /libbpf-bootstrap/examples/rust && cargo build'

.gitignore

@@ -0,0 +1,8 @@
+/build
+/examples/c/build
+/examples/c/.xmake
+/examples/.vscode
+/.idea
+/.clang-format
+/.vscode
+

.gitmodules

@@ -0,0 +1,9 @@
+[submodule "libbpf"]
+	path = libbpf
+	url = https://github.com/libbpf/libbpf.git
+[submodule "bpftool"]
+	path = bpftool
+	url = https://github.com/libbpf/bpftool
+[submodule "blazesym"]
+	path = blazesym
+	url = https://github.com/libbpf/blazesym.git

LICENSE

@@ -0,0 +1,29 @@
+BSD 3-Clause License
+
+Copyright (c) 2020, Andrii Nakryiko
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+3. Neither the name of the copyright holder nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

README.md

@@ -1 +1,66 @@
-# libbpf-bootstrap-android
+# libbpf-bootstrap-android
+---
+layout: post
+title: libbpf-bootstrap-android
+date: 2023-9-14 16:18
+category: Framework
+author: JiaHuann
+tags: [Android, ebpf-framework, cross-compile]
+summary: For amd64 aarch machine to directly using libbpf-bootstrap framwork to write ebpf programs both kernel and user space.And you don't need to have `CONFIG_BTF_DEBUG_INFO` support by using externel BTF file in BTFhubForAndroid instead.For this goal,I did some changes on libbpf-bootstrap,and have done some embedded features.Wish this can help you sth.Best regards. 
+---
+
+# Libbpf-bootstrap for android
+> For amd64 aarch machine to directly using libbpf-bootstrap framwork to write ebpf programs both kernel and user space.And you don't need to have `CONFIG_BTF_DEBUG_INFO` support by using externel BTF file in BTFhubForAndroid instead.For this goal,I did some changes on libbpf-bootstrap,and have done some embedded features.Wish this can help you sth.Best regards. 
+## upstream: 
+- https://github.com/libbpf/libbpf-bootstrap
+- https://github.com/SeeFlowerX/BTFHubForAndroid
+
+## prerare
+- Android NDK
+- gcc-aarch64-linux-gnu
+- Android phone with root and unlock BL
+
+## usage
+- deps
+```shell
+https://github.com/JiaHuann/libbpf-bootstrap-android
+cd libbpf-bootstrap-android
+sudo apt install gcc-aarch64-linux-gnu llvm clang 
+wget https://dl.google.com/android/repository/android-ndk-r25c-linux.zip?hl=zh-cn android-ndk-r25c-linux.zip
+unzip android-ndk-r25c-linux
+```
+- set NDK env to `$PATH`
+```shell
+vim ~/.bashrc
+export your android-ndk-r25c/toolchains/llvm/prebuilt/linux-x86_64/bin to PATH
+```
+
+- compile and push to phone 
+```
+cd examples/c && make
+
+adb devices
+adb remount     # may fail, you can leave with issure.
+adb push examples/c/btf_file/* example/c/your_executable_file /data/local/tmp
+adb shell    #into android kernel shell
+```
+- in android shell
+```shell
+cd /data/local/tmp && chmod +x your_excutable_file
+./run
+Congratulations!
+```
+
+
+# feature
+- libelf,libz on aarcj64 embedded.
+- x86 -> android13(aarch64) cross-compile you can directly write ebpf both kernel-program and user-program on x86 machine.
+- FlameGraph embedded to monitor performance.
+- For None BTF/vmlinux android-kernel(CONFIG_DEBUG_INFO_BTF not set) support.
+- adb debug (after compiling&linking, directly push into android-phone) embedded.
+
+# RoadMap:
+- change the static link to ShareLib.
+- Measure the eBPF program's overhead by FlameGraph.
+- Add more Android features into support.
+- Test for lower Android version.

blazesym/.cargo/config

@@ -0,0 +1,2 @@
+[target.x86_64-unknown-linux-gnu]
+runner = "sudo --preserve-env"

blazesym/.gitattributes

@@ -0,0 +1 @@
+data/vmlinux-5.17.12-100.fc34.x86_64.xz filter=lfs diff=lfs merge=lfs -text

blazesym/.gitignore

@@ -0,0 +1,9 @@
+/data/*.bin
+/data/*.gsym
+/data/*.so
+/data/*.zip
+/data/kallsyms
+/data/vmlinux-5.17.12-100.fc34.x86_64*
+/data/zip-dir
+/target
+Cargo.lock

blazesym/.rustfmt.toml

@@ -0,0 +1,3 @@
+blank_lines_upper_bound = 2
+imports_granularity = "item"
+trailing_semicolon = false

blazesym/CHANGELOG.md

@@ -0,0 +1,25 @@
+0.2.0-alpha.2
+-------------
+- Added `extern "C"` guards in `blazesym.h` header for easy of use from C++ code
+- Added unused member variable to `blaze_user_addr_meta_unknown` type for
+  compliance with C standard, stating undefined behavior for empty structs
+- Changed `blaze_inspect_elf_src::path` type to `*const _`
+- Fixed incorrect `NULL` checks when working with `blaze_symbolize_src_kernel`
+  objects
+- Switched away from using Git LFS for large benchmark files towards
+  on-demand downloading from a different repository, controlled by
+  `generate-bench-files` feature
+
+
+0.2.0-alpha.1
+-------------
+- Removed no longer necessary `base_address` member from various types
+- Renamed `SymInfo::address` member to `addr`
+- Fixed incorrect allocation size calculation in C API
+- Fixed file offset lookup potentially reporting subtly wrong offsets on
+  certain ELF file segment constellations
+
+
+0.2.0-alpha.0
+-------------
+- Initial documented release

blazesym/Cargo.toml

@@ -0,0 +1,79 @@
+[package]
+name = "blazesym"
+description = "blazesym is a library that can be used for address symbolization and more."
+version = "0.2.0-alpha.2"
+edition = "2021"
+rust-version = "1.63"
+authors = ["Daniel Müller <[email protected]>", "Kui-Feng <[email protected]>"]
+license-file = "LICENSE"
+repository = "https://github.com/libbpf/blazesym"
+readme = "README.md"
+categories = [
+  "algorithms",
+  "api-bindings",
+  "development-tools::debugging",
+  "os::unix-apis",
+  "value-formatting",
+]
+keywords = [
+  "dwarf",
+  "elf",
+  "gsym",
+  "stacktrace",
+  "tracing",
+]
+exclude = ["data/dwarf-example", "data/kallsyms.xz"]
+autobenches = false
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[lib]
+name = "blazesym"
+crate-type = ["cdylib", "rlib", "staticlib"]
+
+[features]
+default = ["lru"]
+# Enable this feature to re-generate the library's C header file. An
+# up-to-date version of this header should already be available in the
+# include/ directory, so this feature is only necessary when APIs are
+# changed.
+generate-c-header = ["cbindgen", "which"]
+# Enable this feature to opt in to the generation of test files. Having test
+# files created is necessary for running tests.
+generate-test-files = ["xz2", "zip"]
+# Enable this feature to opt in to the generation of benchmark files.
+# This feature is required for some of the benchmarks. Note that git-lfs
+# needs to be installed in this case.
+generate-bench-files = ["reqwest", "xz2"]
+# Disable generation of test files. This feature takes preference over
+# `generate-test-files`.
+dont-generate-test-files = []
+# Enable code paths requiring a nightly toolchain. This feature is only meant to
+# be used for testing and benchmarking purposes, not for the core library, which
+# is expected to work on stable.
+nightly = []
+
+[[bench]]
+name = "main"
+harness = false
+
+[dependencies]
+libc = "0.2.137"
+log = {version = "0.4.17", optional = true}
+lru = {version = "0.10", optional = true}
+
+[dev-dependencies]
+anyhow = "1.0.71"
+blazesym = {path = ".", features = ["generate-test-files", "log"]}
+criterion = "0.4"
+env_logger = "0.10"
+tempfile = "3.4"
+test-log = "0.2"
+
+[build-dependencies]
+cbindgen = {version = "0.24", optional = true}
+libc = "0.2.137"
+reqwest = {version = "0.11.18", optional = true, features = ["blocking"]}
+xz2 = {version = "0.1.7", optional = true}
+which = {version = "4.4.0", optional = true}
+zip = {version = "0.6.4", optional = true, default-features = false}

blazesym/LICENSE

@@ -0,0 +1,29 @@
+BSD 3-Clause License
+
+Copyright (c) 2022, Kuifeng Lee
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+3. Neither the name of the copyright holder nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.