BRK Breakpoint instruction This instruction generates a Breakpoint Instruction exception. The PE records the exception in ESR_ELx, using the EC value 0x3C, and captures the value of the immediate argument in ESR_ELx.ISS. Within a guarded memory region, while PSTATE.BTYPE != 0b00, a BRK instruction will not generate a Branch Target exception and will generate a Breakpoint Instruction exception as normal. For more information, see PSTATE.BTYPE. 1 1 0 1 0 1 0 0 0 0 1 0 0 0 0 0 BRK #<imm> let comment : bits(16) = imm16; if IsFeatureImplemented(FEAT_BTI) then SetBTypeCompatible(TRUE); end; <imm> Is a 16-bit unsigned immediate, in the range 0 to 65535, encoded in the "imm16" field. AArch64_SoftwareBreakpoint(comment); 2026-03-26 20:27:25 2026-03_rel