add RISC-V to CI using QEMU and Debian kernel, busybox as init (#6029)
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مصطفي محمود كمال الدين
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89
.github/riscv-qemu-setup-all.sh
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89
.github/riscv-qemu-setup-all.sh
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#!/bin/sh
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set -eux
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LINUX_IMG=linux-image-6.12.73+deb13-riscv64_6.12.73-1_riscv64.deb
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DEBIAN_SERVER=https://ftp.debian.org/debian/pool/main/l/linux
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BUSYBOX_PATH=busybox-1.30.1-riscv64
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BUSYBOX_VERSION=9d220791e5917fc2190c5cf405a014a483c01d86
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LIB_PATH=/usr/riscv64-linux-gnu/lib
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LIB_C=libc.so.6
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LIB_M=libm.so.6
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DYN_LD=ld-linux-riscv64-lp64d.so.1
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# Fetch the kernel package
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wget "$DEBIAN_SERVER/$LINUX_IMG"
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# Extract
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dpkg-deb -x "$LINUX_IMG" linux-image
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# Fetch busybox
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git clone https://github.com/rcore-os/busybox-prebuilts.git busybox
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cd busybox && git checkout "$BUSYBOX_VERSION" && cd ..
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# Cross-compile the Rizin repo
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cd rizin
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meson setup build --cross-file doc/examples/cross_builds/meson-linux-riscv64.ini
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meson compile -C build
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cd ..
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# Create a rootfs
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mkdir -p rootfs
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mkdir -p rootfs/lib rootfs/tmp rootfs/proc rootfs/etc
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# Copy all .so files from the build directory to rootfs/lib (only the real ones, not shorthand symlinks)
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find rizin/build/librz/ -name "*.so.[0-9].[0-9].[0-9]" -type f \
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-exec cp {} rootfs/lib/ \; \
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-exec sh -c 'echo "linking $(basename "${1%.*}") -> $(basename "$1")"; ln -sf "$(basename "$1")" "rootfs/lib/$(basename "${1%.*}")"' _ {} \; # symlinking all *.so.0.9 to *.so.0.9.0
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# Copy rizin binary
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cp rizin/build/binrz/rizin/rizin rootfs/rizin
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# libc and libm, dynamic linker
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cp "$LIB_PATH/$LIB_C" "$LIB_PATH/$LIB_M" "$LIB_PATH/$DYN_LD" rootfs/lib/
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# Copy busybox to rootfs
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cp "busybox/$BUSYBOX_PATH/busybox" rootfs/bb
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# Make busybox the init launcher, poweroff, and mount
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ln -s bb rootfs/init
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ln -s bb rootfs/poweroff
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ln -s bb rootfs/mount
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# Make the inittab
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cat << EOF > rootfs/etc/inittab
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::sysinit:/mount -t proc proc /proc
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::wait:$@
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::once:/poweroff -f
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EOF
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# filesystem state
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# rootfs
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# /
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# ├── rizin
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# ├── bb
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# ├── init -> bb
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# ├── poweroff -> bb
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# ├── mount -> bb
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# ├── lib/
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# │ ├── libc.so.6
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# │ ├── libm.so.6
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# │ ├── ld-linux-riscv64-lp64d.so.1
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# │ ├── librz_arch.so.0.9.0
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# │ ├── librz_arch.so.0.9 -> librz_arch.so.0.9.0
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# │ ├── librz_bin.so.0.9.0
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# │ ├── librz_bin.so.0.9 -> librz_bin.so.0.9.0
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# │ └── ... (*.so.0.9.0 objs + *.so.0.9 symlinks)
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# ├── tmp/
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# │ └── (empty)
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# ├── proc/
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# │ └── (mounted by kernel)
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# └── etc/
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# └── inittab
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echo "#########################################################################"
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# for debugging, always check the output tree against the intended tree above
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tree rootfs
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echo "#########################################################################"
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# Package the whole thing into an initrd archive
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cd rootfs
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find . | cpio -o -H newc | gzip > ../initrd.cpio.gz
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cd ..
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31
.github/workflows/ci.yml
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31
.github/workflows/ci.yml
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@ -936,6 +936,37 @@ jobs:
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ninja
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.\rizin_cmake_test
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test-riscv-inside-qemu:
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runs-on: ubuntu-24.04
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steps:
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- uses: actions/checkout@v6
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- name: Install dependencies
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run: |
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sudo apt-get update
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sudo apt-get install -y \
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qemu-system-riscv64 \
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gcc-riscv64-linux-gnu \
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g++-riscv64-linux-gnu \
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binutils-riscv64-linux-gnu \
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cpio
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pip3 install meson ninja
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- name: Setup RISC-V QEMU environment
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run: |
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cd ..
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sh rizin/.github/riscv-qemu-setup-all.sh /rizin -hh
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- name: Run inside RISC-V QEMU
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run: |
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cd ..
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qemu-system-riscv64 \
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-machine virt -cpu rv64 -m 512M \
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-kernel linux-image/boot/vmlinux-6.12.73+deb13-riscv64 \
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-initrd initrd.cpio.gz \
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-append "console=ttyS0,115200 earlycon" \
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-nographic
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create-release:
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name: Create draft release and upload artifacts
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runs-on: ubuntu-24.04
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19
doc/examples/cross_builds/meson-linux-riscv64.ini
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doc/examples/cross_builds/meson-linux-riscv64.ini
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@ -0,0 +1,19 @@
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# SPDX-FileCopyrightText: 2024-2026 moste00 <ubermenchun@gmail.com>
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# SPDX-License-Identifier: BSD-3-Clause
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[binaries]
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c = 'riscv64-linux-gnu-gcc'
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cpp = 'riscv64-linux-gnu-g++'
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ar = 'riscv64-linux-gnu-ar'
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as = 'riscv64-linux-gnu-as'
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ranlib = 'riscv64-linux-gnu-ranlib'
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ld = 'riscv64-linux-gnu-ld'
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strip = 'riscv64-linux-gnu-strip'
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[host_machine]
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system = 'linux'
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cpu_family = 'riscv64'
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cpu = 'riscv64'
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endian = 'little'
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[properties]
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sys_root = '/usr/riscv64-linux-gnu'
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