Problems in latest YASM snapshot

[Catalin Ionescu]

The attached archive contains minimal files to prove the problem.


Cheers,
Catalin

Peter Johnson wrote:

> On Fri, 2 Dec 2005, Catalin Ionescu wrote:
> 
>>>> 3) When accessing local procedure variables on the stack I use
>>>> EBP+offset code generated by a special macro. For every line where I
>>>> access variables on the stack (arguments and/or local variables) I get
>>>> the following warning:
>>>>
>>>> "rc_rtl.nas:52: warning: invalid displacement size; fixed"
>>>>
>>>> The generated code is correct, but with some source files I get 1000+
>>>> warnings!
>>>
>>>
>>> Can you send a copy of the macro?  I think I know what's happening but I
>>> need to validate my theory.
>>
>>
>> The macro is the following one:
>>
>> %macro Arg 2-*.nolist
>>  %rep %0/2
>>    %xdefine %1 ebp+%$Args
>>    %assign %$Args %$Args+ ((%2+3)/4)*4
>>    %rotate 2
>>  %endrep
>> %endmacro
>>
>> and the listing lines that trigger warnings in one of the source files
>> are:
>>
>>  1324 00000003 837D0C01                cmp dword
>> [ebp+12],DLL_PROCESS_ATTACH
>>  1326 00000009 837D0C02                cmp dword
>> [ebp+12],DLL_THREAD_ATTACH
>>  1336 00000023 837D0C00                cmp dword
>> [ebp+12],DLL_PROCESS_DETACH
>>  1338 00000029 837D0C03                cmp dword
>> [ebp+12],DLL_THREAD_DETACH
>>
>> The first source line can be either
>>
>>        cmp     dword [%$fdwReason],DLL_PROCESS_ATTACH
>>
>> or
>>
>>        cmp     dword [ebp+12],DLL_PROCESS_ATTACH
>>
>> and the warning is the same.
> 
> 
> Okay, I guess I'm going to need a bit more information.  What BITS
> setting?  Is DLL_PROCESS_ATTACH just an EQU?  A few lines of code before
> or after might be good too; it could be that the warning is actually on
> a different line but it's somehow getting flagged as this line.
> 
> I ask because when I assemble:
> 
> BITS 32
> DLL_PROCESS_ATTACH equ 4
> cmp dword [ebp+12], DLL_PROCESS_ATTACH
> 
> I don't get a warning.
> 
> Thanks,
> Peter
> 
> 
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