我如何使用LLDB在Apple Silicon Mac上在Qemu上调试RAW I386 MBR二进制运行？
我正在使用i386引导加载程序，并且在我的Apple Silicon机器上使用Qemu运行它，一切正常，除了我无法调试：GDB（尚未？加载原始二进制。这始于很好：
$ qemu-system-i386 -s -S -drive format=raw,file=boot.bin,media=disk,if=floppy -no-fd-bootchk
但是这是错误的：
$ lldb boot.bin
(lldb) target create "boot.bin"
error: '/Users/morpheu5/src/boots/cube/boot.bin' doesn't contain the architecture x86_64
我也尝试过，因为它应该是i386，而不是x86_64：
$ lldb --arch i386 boot.bin
(lldb) target create --arch=i386 "boot.bin"
error: '/Users/morpheu5/src/boots/cube/boot.bin' doesn't contain the architecture i386
但这并没有太大的不同。内联帮助并没有很大的帮助，我在网上搜索的成功零。
现在，我有替代方案：Bochs具有内部调试器，但是基于文本的接口有点笨拙，我什至无法弄清楚如何预设某些断点 - 我喜欢在0x7C00上进行中断或否则我必须踩踏通过整个BIOS代码 - 尽管将其配置为display_library：sdl2，options = gui_debug，但我什至无法运行GUI调试器。另一种选择是我可以使用GDB的覆盆子Pi，但我还没有尝试过，它是零，所以它甚至不是那么强大 - 不是我需要它，但我宁愿保持工作流程。顺利...
很明显，LLDB并没有识别二进制的格式，因此我想知道是否有一种要求它将其拆卸为32位二进制文件，而只用它滚动它。最后，我真正需要的只是一种查看内存，寄存器和堆栈中的内容的方法。
有什么想法吗？
I'm working on an i386 bootloader and I'm running it with QEMU on my Apple Silicon machine, and everything works just fine, except I can't debug it: GDB does not (yet?) work on AS and LLDB sternly refuses to load a raw binary. This starts up fine:
$ qemu-system-i386 -s -S -drive format=raw,file=boot.bin,media=disk,if=floppy -no-fd-bootchk
but this errors out:
$ lldb boot.bin
(lldb) target create "boot.bin"
error: '/Users/morpheu5/src/boots/cube/boot.bin' doesn't contain the architecture x86_64
and I also tried this, because well, it's supposed to be i386, not x86_64:
$ lldb --arch i386 boot.bin
(lldb) target create --arch=i386 "boot.bin"
error: '/Users/morpheu5/src/boots/cube/boot.bin' doesn't contain the architecture i386
but it didn't make much of a difference. The inline help is not greatly helpful and I am having zero success searching online.
Now, I have alternatives: bochs has an internal debugger but the text-based interface is a bit clunky and I can't even figure out how to pre-set certain breakpoints -- I like to break on 0x7c00 or otherwise I have to step through the entire BIOS code -- and I can't even run the gui debugger despite having configured it with display_library: sdl2, options=gui_debug. The other alternative is a Raspberry Pi in which I could probably use gdb but I haven't tried this out yet and it's a Zero so it's not even that powerful anyway -- not that I need it, but I'd rather keep my workflow smooth...
It seems clear that lldb isn't recognizing the binary's format so I'm wondering if there's a way of just asking it to disassemble it as a 32 bit binary and just roll with it the best it can. In the end, all I really need is a way of seeing what is in memory, in the registers, and in the stack.
Any ideas?
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经过几周的实验，看起来LLDB是一个可行的选择，但是Bochs的命令行调试器有些有用。遗憾的是，我无法让GUI在MacOS上运行。
After a few weeks of experimentation, it doesn't look like lldb is a viable option, but Bochs' command-line debugger was somewhat useful. Shame I couldn't get the GUI to run on macOS.
这对我有用，但这不使用LLDB。
this works for me, but this don't use lldb.