This is a collection of Intel®’ IA32® Software Developer's Manuals (URL of the day) and AMD' AMD64 Architecture Programmer's Manual together with the related specifications, application notes, white papers, and change logs. The collection aims to keep all available revisions. It was originally created by Michal Necasek, see OS/2 Museum.

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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.

Decode for this encoding

let comment : bits(16) = imm16; if IsFeatureImplemented(FEAT_BTI) then SetBTypeCompatible(TRUE); end;