wyrover / HardwareBreakpoint

X86/X64 Hardware Breakpoint Manager

HardwareBreakpoint

X86/X64 Hardware Breakpoint Manager

Goal

I wanted to create a flexible, hardware breakpoint system that can be easily dropped into projects without the reliance of multiple dependencies.

Usage

In order to establish a hardware breakpoint, the class HardwareBreakpoint must be instantiated. The constructor takes two arguments.

Argument	Description
singleThread	Determines whether the breakpoint should only exist on the current thread, if set to false, every thread including newly spawned threads will be modified.
runOnce	Determines if the breakpoint should be disabled after it is hit once.

Once the class is made, breakpoints can be created. Optionally, a BreakpointHandler can be added to HardwareBreakpoint::Create. BreakpointHandlers are hooks or notifications used when the breakpoint is hit.

Example

Multiple examples are included in Main.cpp.

Sources

https://en.wikipedia.org/wiki/X86_debug_register

https://wiki.osdev.org/CPU_Registers_x86-64#DR7

http://x86asm.net/articles/debugging-in-amd64-64-bit-mode-in-theory/