Fatal error a1008 unmatched macro nesting

drew77

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• Coding:32 bit Assembly, C, C++

 
; Clear_dr0.asm
;
;
include masm32includemasm32rt.inc  

@TRY_BEGIN MACRO Handler
	 pushad						  ; Save Current State
	 mov esi, offset Handler		 ; Address of New Exception Handler
	 push esi					    ; Save Old Exception Handler
	 push dword ptr fs:[0]		   ; Install New Handler
	 mov dword ptr fs:[0], esp
ENDM

@TRY_EXCEPT MACRO Handler
	 jmp NoException&;Handler	    ; No Exception Occured, so jump over
Handler:
	 mov esp, [esp + 8]			  ; Exception Occured, Get old ESP
	 pop dword ptr fs:[0]		    ; Restore Old Exception Handler
	 add esp, 4					  ; ESP value before SEH was set
	 popad						   ; Restore Old State
ENDM

@TRY_END MACRO Handler
	 jmp ExceptionHandled&;Handler    ; Exception was handled by @TRY_EXCEPT
NoException&;Handler:			    ; No Exception Occured
	 pop dword ptr fs:[0]			 ; Restore Old Exception Handler
	 add esp, 32 + 4				  ; ESP value before SEH was set. 32 for pushad and ...
ExceptionHandled&;Handler:		   ; ...4 for push offset Handler. (No Restore State)
									  ; Exception has been handled, or no exception occured
ENDM
.CONST
.data
  
WaterMark   db  "SiegeWorks 2013 ð__ð" ; Alt 240 char
%Date	   db  " &@Date " ; Compile date
%time	   db  " &@Time"

.data?

.code

start:

; push offset handler
; push dword ptr fs:[0]
; mov fs:[0],esp
; xor eax, eax
; div eax ;generate exception
; pop fs:[0]
; add esp, 4
@TRY_BEGIN MACRO Handler

@TRY_EXCEPT MACRO Handler
	
xor eax, eax
div eax ;generate exception

;continue execution
;...
fn MessageBox,0,str$(eax),"Title",MB_OK
handler:
mov ecx, [esp+0Ch] ;skip div
add dword ptr [ecx+0B8h], 2 ;skip div
mov dword ptr [ecx+04h], 0 ;clean dr0
mov dword ptr [ecx+08h], 0 ;clean dr1
mov dword ptr [ecx+0Ch], 0 ;clean dr2
mov dword ptr [ecx+10h], 0 ;clean dr3
mov dword ptr [ecx+14h], 0 ;clean dr6
mov dword ptr [ecx+18h], 0 ;clean dr7
xor eax, eax

@TRY_END MACRO Handler

invoke ExitProcess,0

end	 start

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rohitab

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Disclaimer: Any errors in spelling, tact or fact are transmission errors.

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drew77

• Gender:Male
• Location:Texas
• Interests:Bicycling, Photography, Electronics, Swimming
• Coding:32 bit Assembly, C, C++

I got it working correctly.

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Article: Q113420
Product(s): Microsoft Macro Assembler
Version(s): 6.0,6.0a,6.0b,6.1,6.11,6.1a
Operating System(s): 
Keyword(s): 
Last Modified: 06-MAY-2001

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft Macro Assembler (MASM), versions 6.0, 6.0a, 6.0b, 6.1, 6.1a, 6.11 
-------------------------------------------------------------------------------

SYMPTOMS
========

Angle brackets ("<>") are required for the argument list of a FOR
statement. If the angle brackets are missing from the argument list of a FOR
statement in a macro, no listing file will be created and errors A1008 and A2008
will be generated. The sample given at the end of this article generates the
following errors:

  test.asm(17): error A2008: syntax error : integer

  numargs(3): Macro Called From
  test.asm(17): Main Line Code

  test.asm(17): fatal error A1008: unmatched macro nesting

  numargs(5): Macro Called From
  test.asm(17): Main Line Code

CAUSE
=====

Because A1008 is a fatal error, no listing file is created.

RESOLUTION
==========

The error messages indicate where the error occurs, but may be difficult to
interpret. The first message line indicates that an A2008 error occurred at line
17 of the program (see the sample below). The second message shows that the
actual error is on line 3 of the numargs macro. The error can be located and
eliminated by finding this line and adding the angle brackets around varg (shown
as a commented line in the sample).

STATUS
======

Microsoft has confirmed this to be a problem in MASM versions 6.x. We are
researching this problem and will post new information here in the Microsoft
Knowledge Base as it becomes available.

Sample Code
-----------

  ; Assemble options needed:  /c /Fl /Sa

    .MODEL small

    numargs  MACRO varg:VARARG
      mov ax,0
      ; Following line should be FOR val, <varg>
      FOR val, varg
        inc ax
      ENDM
    ENDM

    .STACK
    .DATA
    .CODE
    .STARTUP
      numargs 1,1,1
    .EXIT
    END

Additional query words: 6.00 6.00a 6.10 6.10a 6.x 6.1x buglist6.00 buglist6.10 buglist6.11

======================================================================
Keywords          :  
Technology        : kbMASMsearch kbAudDeveloper kbMASM600 kbMASM610 kbMASM611 kbMASM610a kbMASM600a kbMASM600b
Version           : :6.0,6.0a,6.0b,6.1,6.11,6.1a

=============================================================================