How do I set a software breakpoint on an ARM processor?

Question

How do I do the equivalent of an x86 software interrupt:

asm( \"int $3\" )

on an ARM processor (specifically a Cortex A8) to generate an event

Answer 1

Although the original question asked about Cortex-A7 which is ARMv7-A, on ARMv8 GDB uses

brk #0