21.39 FRAME UNWIND ON
FRAME UNWIND ON directive instructs the assembler to produce unwind tables for this and subsequent functions.
FRAME UNWIND ON
You can use this directive outside functions. In this case,the assembler produces unwind tables for allfollowing functions until it reaches a
FRAME UNWIND OFF directive.
FRAME UNWIND directive is not sufficient to turn on exception table generation. Furthermore a
FRAME UNWIND directive, without other
FRAME directives, is not sufficient information for the assembler to generate the unwind information.