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Jiaolong
2022-08-11
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RISC-V V扩展1.0版本环境搭建与测试进行中

# 0. 准备

在重装了n次后踩的坑

  • 虚拟机：Ubuntu 20.04
  • 内存分配：建议16G+ （或通过分配swap解决）
  • 硬盘分配：建议100G+

# 1. 下载相关依赖

apt-get install autoconf automake autotools-dev curl python3 libmpc-dev libmpfr-dev libgmp-dev gawk build-essential bison flex texinfo gperf libtool patchutils bc zlib1g-dev libexpat-dev
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# 2. 下载安装工具链

下载riscv-gnu-toolchain

git clone -b rvv-next https://github.com/riscv/riscv-gnu-toolchain --progress
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cd riscv-gnu-toolchain
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这个仓库使用子模块，将自动在需要的时候加载，所以并不需要 --recursive or git submodule update --init --recursive 来一次性下完。

下载riscv-gcc

git submodule update --init --progress  --remote riscv-gcc
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cd riscv-gcc
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git fetch origin
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git checkout origin/riscv-gcc-10.1-rvv-dev
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下载riscv-gcc

git submodule update --init --progress  --remote riscv-binutils
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cd ../riscv-binutils
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git fetch origin
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git checkout origin/rvv-1.0.x-zfh
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安装

cd riscv-gnu-toolchain
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./configure --prefix=/opt/riscv --with-arch=rv64gcv --with-abi=lp64d --with-multilib-generator="rv64gcv-lp64d--"
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make -j $(nproc) >make.log 2>&1
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make linux -j $(nproc) >make_linux.log 2>&1
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如果make -j $(nproc) 失败，试试执行make -j 1

分配空间不足会提示g++: fatal error: Killed signal terminated program cc1plus错误

解决方案：1. g++: fatal error: Killed signal terminated program cc1plus

提示

这一步本人耗时6-7小时，给出本人电脑配置，方便参考时间

处理器：Intel(R) Core(TM) i5-8300H CPU @ 2.30GHz

内存：16G

显卡：GTX 1060 （好像没用到）

中途可能会在部分环节假死好久甚至一两个小时，不用管它，可以用free -h产看内存占用情况

设置环境变量

vim ~/.bashrc
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添加如下路径

记得修改为对应路径

export RISCV="/opt/riscv" 
export PATH=$PATH:$RISCV/bin
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使环境变量生效

source ~/.bashrc
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# 3. 安装 Spike 和 pk

在spike路径下打开终端：

apt-get install device-tree-compiler
mkdir build
cd build
../configure --prefix=$RISCV
make
[sudo] make install
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在pk路径下打开终端：

mkdir build
cd build
../configure --prefix=$RISCV --host=riscv64-unknown-elf
make
make install
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# 4. 测试编译

  1. 编写简单测试函数add.c

    echo '
#include <stdio.h>
int f(int x){
        return x+3;
}
int main(){
        printf("hello riscv\n");
        printf("%d\n",f(3));
}' > add.c
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  2. 使用riscv64-unknown-elf-gcc编译RISC-V可执行文件

    riscv64-unknown-elf-gcc add.c -o add
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  3. 使用spike pk模拟运行RISC-V指令

    spike pk add
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    image-20220808135230132

  4. 使用riscv64-unknown-elf-gcc生成RISC-V指令的汇编代码

    riscv64-unknown-elf-gcc -S add.c -o add.s
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    image-20220808135205903

# 5. 测试向量指令

  1. 新建汇编代码v_test.s

    #void
#saxpy(size_t n, const float a, const float *x, float *y)
# {
#       size_t i;
#       for (i=0; i<n; i++)  y[i] = a * x[i] + y[i];
# }
#  register arguments:
#      a0      n
#      fa0     a
#      a1      x
#      a2      y
.global saxpy
saxpy:
        vsetvli a4, a0, e32, m8,ta,ma
        vle32.v v0, (a1)
        sub a0, a0, a4
        slli a4, a4, 2
        add a1, a1, a4
        vle32.v v8, (a2)
        vfmacc.vf v8, fa0, v0
        vse32.v v8, (a2)
        add a2, a2, a4
        bnez a0, saxpy
        ret
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  2. 编译

    riscv64-unknown-elf-as -march=rv64gcv --mabi=lp64d v_test.s -o v_test.o
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  3. 新建c文件callsaxpy.c

    #include <stddef.h>
#include <stdio.h>

extern void  saxpy(size_t n, const float a, const float *x, float *y);

int main(){
        size_t size=3;
        const float a=1.0;
        const float array1[]={1.0,2.0,3.0};
        float array2[]={1.0,2.0,3.0};
        for(int i =0;i<size;i++){
                printf("%f\n", array2[i]);
        }
        printf("----------------\n");
        //调用saxpy函数
        saxpy(size,a,array1,array2);
        for(int i =0;i<size;i++){
                printf("%f\n", array2[i]);
        }
        return 0;
}
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  4. 编译

    riscv64-unknown-elf-gcc -c callsaxpy.c -o callsaxpy.o
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  5. 生成可执行文件

    riscv64-unknown-elf-gcc -static v_test.o callsaxpy.o -o out
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或者跳过245直接执行

riscv64-unknown-elf-gcc -g v_test.s callsaxpy.c -o out
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  1. 运行

    spike --isa=RV64GCV pk out
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image-20220815112928349

# 5. qemu

wget https://download.qemu.org/qemu-7.1.0.tar.bz2
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tar -jxvf qemu-7.1.0.tar.bz2
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./configure --target-list=riscv64-softmmu,riscv64-linux-user --prefix=/home/jiaolong/riscvv/qemu
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报错：ERROR: glib-2.56 gthread-2.0 is required to compile QEMU

目前尝试两种解决办法：

  1. 使用Ubuntu18.04
  2. 手动下载glib

# Ubuntu18.04

wget https://download.qemu.org/qemu-7.1.0.tar.bz2
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tar -jxvf qemu-7.1.0.tar.bz2
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./configure --target-list=riscv64-linux-user,riscv64-softmmu --prefix=/usr/local/qemu
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apt-get install libglib2.0-dev
apt-get install libpixman-1-dev
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如果想支持rvv则：加上-cpu rv64,v=true

./qemu-riscv64 -cpu rv64,v=true -L $RISCV/sysroot ../../../test/out
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# 手动编译

在尝试apt-get install 安装失败后，使用手动编译

wget http://ftp.acc.umu.se/pub/GNOME/sources/glib/2.56/glib-2.56.4.tar.xz
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tar -vxf glib-2.56.4.tar.xz
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./configure
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再次报错：No package 'libffi' found

继续下载

wget https://github.com/libffi/libffi/releases/download/v3.4.2/libffi-3.4.2.tar.gz
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tar -vxf libffi-3.4.2.tar.gz
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./configure --prefix=/usr/local/libffi
make
make install
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export LIBFFI_LIBS=/usr/local/libffi/lib/libffi.la
export PKG_CONFIG_PATH=/usr/local/libffi/lib/pkgconfig
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再次报错：configure: error: *** Could not find libmount

wget http://ftp.ntu.edu.tw/pub/linux/utils/util-linux/v2.38/util-linux-2.38.tar.gz
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尝试了一下，搞不定，直接禁用掉--enable-libmount=no

No package 'libpcre' found

PCRE download | SourceForge.net (opens new window)

./configure --prefix=/usr/local/pcre --enable-unicode-properties
make
make install
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export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/pcre/lib/pkgconfig
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--enable-unicode-properties

qemu-system-riscv64 \
   -nographic \
   -machine virt \
   -smp 4 \
   -m 2G \
   -kernel Fedora-Minimal-Rawhide-*-fw_payload-uboot-qemu-virt-smode.elf \
   -bios none \
   -object rng-random,filename=/dev/urandom,id=rng0 \
   -device virtio-rng-device,rng=rng0 \
   -device virtio-blk-device,drive=hd0 \
   -drive file=Fedora-Minimal-Rawhide-20200108.n.0-sda.raw,format=raw,id=hd0 \
   -device virtio-net-device,netdev=usernet \
   -netdev user,id=usernet,hostfwd=tcp::10000-:22 \
   -fsdev local,security_model=passthrough,id=fsdev0,path=/home/jiaolong/riscvv/hostshare \
   -device virtio-9p-pci,id=fs0,fsdev=fsdev0,mount_tag=hostshare
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# 报错记录

# 1. g++: fatal error: Killed signal terminated program cc1plus



参考链接：

  1. RISC-V “V” 拓展—1.0版本环境搭建与测试_riscv_life的博客-CSDN博客 (opens new window)
  2. Ubuntu16.04搭建RISCV环境手把手教程（RISCV+spike+gem5+qemu）-CSDN博客 (opens new window)
  3. C++: fatal error: Killed signal terminated program cc1plus_tiffiny10的博客-CSDN博客 (opens new window)
Last updated: 2022/12/04, 13:58:10

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