Re: Generating function epilogue

[Ken Brakey <brakeykr at poncacity dot net>]

gmirchev@usa.net wrote:

> Hello,
>         I have the following problem:
>
>         I need to generate the right function epilogue, but without the ret
> instruction on the end. Instead a jmp to another function, as if
> my function has never been called.
>         Using the address of the first argument I can restore the frame and jmp
> to the other function, but the registers don't get restored, so it all
> fails, changing the subroutine that calls my function is not an option.
> HELP !

When you CALL, the return address is saved on the stack, if stack is large enough.
When you JUMP, the return address is forgotten
You could save regs to, and restore regs from a struc.
If something happens in 'OTHER FUNC' that determins you could call everytime
but if not returning to 'MY FUNC' pop the return address off the stack and return
to
'SUBROUTINE'
Ken


>
>
> Here is the map:
>
> SUBROUTINE      MY FUNC             OTHER FUNC
>
> call   ----->   may                 if called
>                 return              will ret to
>                                     MY FUNC, if
>                 may call --->       jmped will ret
>                                     to SUBROUTINE
>                 may jmp  --->
>
> Regs: George
>
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