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/