Equivalent of 'int 3' on ARM/iOS processors

According to an answer for the question Breaking into the debugger on iPhone the equivalent is asm("trap"). But see the other answers for different techniques.

Especially look into conditional breakpoints which is a less invasive method.

When dealing with macOS ARM:

1. Clang's __builtin_debugtrap(); function should generate necessary break instruction.
2. If that won't work, try asm("brk #0x1");