library/stdarch/crates/core_arch/src/aarch64/armclang.rs

   1 //! ARM compiler specific intrinsics
   2 //!
   3 //! # References
   4 //!
   5 //! - [ARM Compiler v 6.10 - armclang Reference Guide][arm_comp_ref]
   6 //!
   7 //! [arm_comp_ref]: https://developer.arm.com/docs/100067/0610
   8
   9 #[cfg(test)]
  10 use stdarch_test::assert_instr;
  11
  12 /// Inserts a breakpoint instruction.
  13 ///
  14 /// `VAL` is a compile-time constant integer in range `[0, 65535]`.
  15 ///
  16 /// The breakpoint instruction inserted is `BRK` on A64.
  17 #[cfg_attr(test, assert_instr(brk, VAL = 0))]
  18 #[inline(always)]
  19 #[rustc_legacy_const_generics(0)]
  20 pub unsafe fn __breakpoint<const VAL: i32>() {
  21     static_assert_imm16!(VAL);
  22     asm!("brk {}", const VAL);
  23 }