工具与资源salmanarif.bitbucket.io
VisUAL：高度可视化的 ARM 模拟器
VisUAL: A highly visual ARM emulator
2017 — 2020，它一次次回到首页
黑点是上首页（≥ 50 分）的那次投稿，空心点是没冲上去的投稿，点越大分数越高。
导读
VisUAL 是一个面向教学的、高度可视化的 ARM 模拟器，用图形界面展示寄存器、内存和执行流程，帮助学习者理解汇编程序如何运行。它提供 Windows、macOS 和 Linux 版本，多年来常被用于 ARM 汇编入门教学。
为什么经久不衰：它把抽象的 ARM 汇编和机器状态变成可见的界面，降低了学习门槛，因此多年后仍是值得推荐的教学工具。
HN 评论精选
批评寄存器数值未按固定宽度显示，容易误导学生，并建议改进内存视图。
第一眼注意到的是数值显示没有固定宽度。除了读起来费劲，还可能误导，尤其对教学工具不好：它没有体现存储是固定宽度的。比如寄存器明明是 32 位，却显示成 R0 0000BEEF、R2 000000BE 这样不补零的形式。我教过汇编，很多学生在这里搞错；文中“错误纠正建议”下的正确示例也把语法错误当成了运行时错误。另外建议内存查看增加 16 字节十六进制加 ASCII 的 hexdump 模式。
userbinator查看英文原文
The one thing that immediately caught my eye is the lack of fixed-width-ness (for lack of a better term) in the value displays. IMHO besides being somewhat annoying to read it can be rather misleading, which is bad especially for something "designed specifically to use as a teaching tool". It's misleading because it doesn't show that the storage for the values is fixed-width. For example, this clearly shows that the registers are 32 bits and never anything but: R0 0000BEEF R1 000BEEF0 R2 000000BE R3 00000001 R4 BEEF0000 R5 00005F77 R6 00000000 R7 00000000 ... I've taught Asm before and seen so many students get this wrong that it's worth calling out. In fact the right example under the "Error Correction Suggestions" section gets this wrong too --- that's an assembly/syntax error, not a runtime error. (ARM's immediate value encoding is also worth looking at if you haven't seen it before, since it's not just a single 32-bit value either: https://alisdair.mcdiarmid.org/arm-immediate-value-encoding/ ) The other thing that I'd suggest as an improvement is a 16-byte-hexdump mode with ASCII on the right for "View Memory Contents". Other than that, with perhaps the exception of "infinite loop detection", the other features look useful.
指出其底层框架带来更强指令支持，但前端不如 VisUAL。
这个模拟器基于 unicorn、keystone、capstone 框架，所以指令和架构支持更多：https://github.com/hugsy/cemu。不过它的前端比较粗糙，有些问题；希望它能发展出更丰富的前端，达到 VisUAL 的水平。
molticrystal查看英文原文
This simulator since it is based on the unicorn,keystone,capstone framework, has a lot more instruction support(and architecture support): https://github.com/hugsy/cemu . Its front was just thrown together though, and it has a few issues. It would be nice if it ever develops into having a rich front end and progresses towards what VisUAL has.
质疑是否自由软件、能否获取源码自行构建。
这是自由软件吗？我想从源码构建，但看起来他们只分发二进制。
rambojazz查看英文原文
Is this free software? I wanted to build from source buy it seems like they only distribute binaries?
赞赏 Linux 支持与界面，建议增加示例代码。
我喜欢这个项目，也很感谢有 Linux 版本。看起来非常精致、友好、吸引人，赞。也许可以加一些代码示例。我用过类似的 GNUSim8085 学汇编，它面向 Intel 8085，且大多数发行版都打包了。
partycoder查看英文原文
I like this project, and really appreciate that there's a Linux version. Looks very polished, friendly and inviting, so kudos. Maybe some code samples could be a good addition. I used a similar program to learn assembly, GNUSim8085, targeting the Intel 8085 architecture and is packaged for most distros.
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