masm 10 vs 11

[dedndave]

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.code

PowerOf10 proto

it's odd that he did it that way

[dedndave]

well - you just need a floating point value

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    INCLUDE \Masm32\Include\Masm32rt.inc

        .DATA
qwTest  REAL8 3.1415962

        .DATA?
szBuff  db 20 dup(?)

        .CODE

Start:
    INVOKE  FloatToStr,offset qwTest,offset szBuff
    print   offset szBuff,13,10

    INVOKE  FloatToStr2,offset qwTest,offset szBuff
    print   offset szBuff,13,10

    inkey
    exit

    END     Start

[bomz]

Microsoft (R) Macro Assembler Version 10.00.40219.01
Copyright (C) Microsoft Corporation.  All rights reserved.

Assembling: C:\111.txt

***********
ASCII build
***********

C:\111.txt(12) : error A2114:INVOKE argument type mismatch : argument : 1
C:\111.txt(15) : error A2114:INVOKE argument type mismatch : argument : 1
Microsoft (R) Incremental Linker Version 10.00.40219.01
Copyright (C) Microsoft Corporation.  All rights reserved.

LINK : fatal error LNK1181: cannot open input file '111.obj'
Не удается найти C:\111.obj
Для продолжения нажмите любую клавишу . . .

[dedndave]

sorry about that - lol
it wants the QWORD passed - not a pointer

[bomz]

INCLUDE \Masm32\Include\Masm32rt.inc

        .DATA
qwTest  REAL8 3.1415962

        .DATA?
szBuff  db 20 dup(?)

        .CODE

Start:
    INVOKE  FloatToStr2,qwTest,offset szBuff
    print   offset szBuff,13,10

    INVOKE  FloatToStr2,qwTest,offset szBuff
    print   offset szBuff,13,10

    inkey
    exit

    END     Start

[dedndave]

i don't know how they do that - maybe there is a better way
but, this should work....

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    push    offset szBuff
    push dword ptr qwTest+4
    push dword ptr qwTest
    CALL    FloatToStr
    print   offset szBuff,13,10

    push    offset szBuff
    push dword ptr qwTest+4
    push dword ptr qwTest
    CALL    FloatToStr2
    print   offset szBuff,13,10

oh - good job
i didn't know you could do that   

[bomz]

I read masm help, never use macros and functions

[dedndave]

 :t

oops - Pi is 3.1415926
i am getting old

[bomz]

now full compatibable with all masm version

[bomz]

One question leave. How makes lib from this? SDKKit includes

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;:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
;:                                           FASTCALL                                             ::
;:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

externdef syscall @ExAcquireFastMutexUnsafe@4:proc
ExAcquireFastMutexUnsafe textequ <@ExAcquireFastMutexUnsafe@4>

externdef syscall @ExInterlockedAddLargeStatistic@8:proc
ExInterlockedAddLargeStatistic textequ <@ExInterlockedAddLargeStatistic@8>

[dedndave]

one of the best guys to answer that is Erol
i will leave that one for him   

[bomz]

may be like that?

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;__NO_NOISE__
.386
.model flat,stdcall
option casemap :none
externdef syscall @ExAcquireFastMutexUnsafe@4:FAR
.code
LibMain proc hInstDLL:DWORD, reason:DWORD, unused:DWORD
mov eax, 1
ret
LibMain endp

[japheth]

may be like that?

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;__NO_NOISE__
.386
.model flat,stdcall
option casemap :none
externdef syscall @ExAcquireFastMutexUnsafe@4:FAR
.code
LibMain proc hInstDLL:DWORD, reason:DWORD, unused:DWORD
mov eax, 1
ret
LibMain endp

No. This wild guess is completely wrong.

Simplest way is using POLIB ( as it has been mentioned already in this thread ).

1. Create a .DEF file:

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LIBRARY ntoskrnl.exe
EXPORTS
"@ExAcquireFastMutexUnsafe@4"
... [more exports]


2. Run POLIB:

polib /DEF:NTOSKRNL.def /OUT:NTOSKRNL.LIB

[bomz]

polib ok thanks. but how use such construction in the asm code, how call this function from driver?

[japheth]

polib ok thanks. but how use such construction in the asm code, how call this function from driver?

It's a FASTCALL proc, hence you have to move argument 1 to register ECX:

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mov ecx, value_of_arg_1
call @ExAcquireFastMutexUnsafe@4