x86 does also have debugging registers: http://en.wikipedia.org/wiki/X86_debug_r... | Hacker News

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		xxxyy on Nov 24, 2014 \| parent \| context \| favorite \| on: How Does a Debugger Work? x86 does also have debugging registers: http://en.wikipedia.org/wiki/X86_debug_register They can be used from the Windows Kernel Debugger (WinDbg), although I'm not sure if/how Linux-based gdb uses them.

MaulingMonkey on Nov 25, 2014 [–]

I'm pretty certain that Visual Studio uses those for "memory breakpoints", and that GDB uses those for "hardware watchpoints", to use their respective nomenclature. And these are very handy at times.

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