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QEMU 有没有办法追踪客户机指令流的同时，观察寄存器值的变化？ #14
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QEMU 有没有办法追踪客户机指令流的同时，观察寄存器值的变化？ |
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Replies: 3 comments 3 replies
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直接gdbmularch直接连接加载符号 ， 就是连接gdb stub的意思，qemu 里-s就是启动一个gdb stub |
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或者 -d in_asm 然后对着汇编反查代码 (调裸机这种事儿还是得老师傅传授经验 我也是老师傅教的😇 |
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我是不是带坏 Ziyao 了！ |
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哈哈哈哈 |
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我一般是开着execlog插件，除了看到汇编指令，还能看到特定寄存器值的变化[坏笑] -plugin libexeclog.so,reg=sp,reg=x0这样子，可以同时追踪多个寄存器。还有instruction/address filter可以分别过滤指令和地址。 |
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可参见社区技术分享会：吃透 QEMU TCG execlog 插件！追踪指令流 / 内存变化，讲解实现 + 回调流程，还有扩展应用思路～ |
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我一般是开着execlog插件，除了看到汇编指令，还能看到特定寄存器值的变化[坏笑]
-plugin libexeclog.so,reg=sp,reg=x0这样子，可以同时追踪多个寄存器。还有instruction/address filter可以分别过滤指令和地址。