从零实现一个 RISC-V 模拟器 - V2EX
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ksco

从零实现一个 RISC-V 模拟器

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  •   ksco Jun 24, 2022 4679 views
    This topic created in 1419 days ago, the information mentioned may be changed or developed.

    写了一个非常小的 RISC-V 模拟器,只有 1500 行 C 代码,可以运行 xv6 。写完之后对于模拟器的运行原理也算是有了一个基础的理解。

    开源地址: https://github.com/ksco/nanoemu

    运行截图:

    10 replies    2022-06-28 11:24:49 +08:00
    jdjingdian
        1
    jdjingdian  
       Jun 24, 2022   1
    不明觉厉,火钳刘明
    uilvn
        2
    uilvn  
       Jun 24, 2022   1
    已 star
    kimown
        3
    kimown  
       Jun 24, 2022
    这是用 x86 指令模拟 risc-v 吗
    ksco
        4
    ksco  
    OP
       Jun 24, 2022   1
    @kimown #3 你说的是类似 QEMU TCG 那种动态翻译吗?不是的,就是单纯的软件模拟。
    kimown
        5
    kimown  
       Jun 24, 2022
    @ksco 是软件模拟 risc-v 硬件吗
    ksco
        6
    ksco  
    OP
       Jun 24, 2022
    @kimown #5 对的,实现了 I M A 三个扩展的部分指令,以及部分特权级指令。总之刚好可以用来运行 xv6 。
    misaka19000
        7
    misaka19000  
       Jun 24, 2022
    不明觉厉,火钳刘明!!!
    TimeSea
        8
    TimeSea  
       Jun 24, 2022 via Android   1
    好厉害,这个学期学校让我们用的 verilog 写的 cpu,不知道能不能也把这个跑起来
    f1384793
        9
    f1384793  
       Jun 28, 2022
    @ksco 请问楼主用的哪个版本的 xv6 ?
        10
    ksco  
    OP
       Jun 28, 2022
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