error macro that able to return it proc name or blabla: name

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sleepsleep

Joined: 05 Oct 2006
Posts: 13336
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sleepsleep 18 Jun 2012, 17:04

idk how hard this could be or how easy it might be,

i saw something like below eg.

Code:

.no_zero_return:
  mov eax,NO_ZERO_RETURN
  jmp somewhere

then in the somewhere
cinvoke wsprintf,buff,<'the return error is : %i'>,eax
msgbox, or printf buff

i am thinking,
why not a macro that able to return current scope name

eg.

Code:

; global variable
errscope db 0xFF dup(0)

.no_zero_return:
  error here
  jmp somewhere

after error here or whatever magic name, errscope would have ".no_zero_return:"

so we skip the double naming job.

then user can choose to output those error using printf or debug.print or etc mechanism.

18 Jun 2012, 17:04

hopcode

Joined: 04 Mar 2008
Posts: 563
Location: Germany

hopcode 19 Jun 2012, 09:17

Hi sleepsleep,
i wrote once macros for that at compile time to enable
logging,ondebugging, output to console or file of
symbols,addresses,module names,regs etc.
they store names/functions only if LOG/DEBUG=TRUE
it was very effective, iirc
bad is that i cannot find them at the moment, perhaps
in the develop\macro\mrk_macrow.inc of x32lab

Cheers,

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19 Jun 2012, 09:17

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20623
Location: In your JS exploiting you and your system

revolution 19 Jun 2012, 10:25

If you don't mind losing the colon you can use a struc:

Code:

struc error somewhere {
    .:                                       ;define the label name
      local   .skip
       call    .skip                   ;put error text address on stack
    db      `.                      ;place the error text
    .skip:
     pop     eax                     ;retrieve the error text address
    jmp     somewhere               ;jump to error handler
}

;some dummy test code
       test    ecx,ecx
     jnz     .no_zero_return
;...

.no_zero_return error err_handler

err_handler:
;   cinvoke wsprintf,buff,<'the return error is : %s'>,eax
;...

19 Jun 2012, 10:25

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