[−][src]Function core_arch::arm::__breakpoint

pub unsafe fn __breakpoint(val: i32)
🔬 This is a nightly-only experimental API. (stdsimd)
This is supported on ARM only.

Inserts a breakpoint instruction.

val is a compile-time constant integer in range [0, 255].

The breakpoint instruction inserted is:

  • BKPT when compiling as T32,
  • BRK when compiling as A32 or A64.

Safety

If val is out-of-range the behavior is undefined.

Note

ARM's documentation defines that __breakpoint accepts the following values for val:

  • 0...65535 when compiling as A32 or A64,
  • 0...255 when compiling as T32.

The current implementation only accepts values in range [0, 255] - if the value is out-of-range the behavior is undefined.