bkpt

Breakpoint (A32)

BKPT #<imm>

Causes a software breakpoint.

Pseudocode Operation

GenerateException(Breakpoint)
PC ← (unchanged by architecture, debugger determines resumption)

Example

BKPT #16

Encoding

Binary Layout

cond

31:28

00010

27:23

01

22:21

0

20

imm12

19:8

0111

7:4

imm4

3:0

 

Format System

Opcode 0x01200070

Extension A32 (Base)

Operands

• imm
  ID

Related

Other forms of bkpt

• bkpt Breakpoint (Thumb)

More in A32 (Base)

Reference

View in Arm A64 ISA Reference ↗ Arm AArch32 ISA

Instruction Forms

Encoding	Instruction		ISA		Bit pattern
0x01200070	BKPT{<q>} {#}<imm>		A32		cond | 00010 | 01 | 0 | imm12 | 0111 | imm4
0xBE00	BKPT{<q>} {#}<imm>		T32		10111110 | imm8

Description

Breakpoint causes a Breakpoint Instruction exception. Breakpoint is always unconditional, even when inside an IT block.

Operation

EncodingSpecificOperations();
AArch32.SoftwareBreakpoint(imm16);