Expand description
Functions to read and write debug registers.
- The dr{0,1,2,3} registers are used to set break points.
- The dr6 register contains debug conditions that were sampled at the time the last debug exception.
- The dr7 register enables or disables breakpoints and sets breakpoint conditions.
See Intel Vol. 3a Chapter 17, “Debug, Branch, Profile, TSC … Features”
Potential API Improvements
Maybe Breakpoint should be a linear type, and functions that mutate
dr0-dr3 should take &mut self. That would mean we’d have to remove
BREAKPOINT_REGS and a client maintains some mutable instance to the
registers on every core on its own.
Structs
Enums
Specifies the breakpoint condition for a corresponding breakpoint.
Specify the size of the memory location at the address specified in the
corresponding breakpoint address register (DR0 through DR3).
Specifies available hardware breakpoints.
Constants
An array list of all available breakpoint registers.