use## as a mnemonic prefix

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baldr

Joined: 19 Mar 2008
Posts: 1651

baldr 19 Mar 2008, 19:25

Hi there!

Is it intended that use## can be used Wink

as a mnemonic prefix?

Sincerely yours,
Sergio.

19 Mar 2008, 19:25

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20302
Location: In your JS exploiting you and your system

revolution 20 Mar 2008, 03:28

# is already the concatenation operator. Multiple #'s are treated as one.

20 Mar 2008, 03:28

baldr

Joined: 19 Mar 2008
Posts: 1651

baldr 26 Jul 2008, 22:35

That is not what I mean.

Code:

use16 format binary as "MBR"
use32 push eax ;db 0x50

26 Jul 2008, 22:35

vid
Verbosity in development

Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia

vid 27 Jul 2008, 01:28

why do you put "use16" before "format binary" ?

27 Jul 2008, 01:28

baldr

Joined: 19 Mar 2008
Posts: 1651

baldr 29 Jul 2008, 03:57

Just as example. Stumble upon this when trying to mix 32 and 16 bit code (guess for what Wink

). It seems that formatter's directive without arguments doesn't confuse assembler if it occurs before opcode mnemonic (buf after label).

29 Jul 2008, 03:57

vid
Verbosity in development

Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia

vid 29 Jul 2008, 14:48

Bad example. There is no reason at all to precede "format" with any directive.

Mixing 16bit and 32bit code is not a problem:

Code:

use16

mov ax, [bx+si]
jmp 0008:xyz

use32

xyz:
mov eax, [ebx]
....

29 Jul 2008, 14:48

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