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§
- Break
Condition - Specifies the breakpoint condition for a corresponding breakpoint.
- Break
Size - Specify the size of the memory location at the address specified in the corresponding breakpoint address register (DR0 through DR3).
- Breakpoint
- Specifies available hardware breakpoints.
Constants§
- BREAKPOINT_
REGS - An array list of all available breakpoint registers.