AX=2 instead of mov AX,2 ?

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Slai

Joined: 11 Jan 2006
Posts: 40
Location: NY/Bulgaria

Slai

is there any way to use a macro for replasing the mov register, value with register=value ?

29 Jan 2006, 06:05

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8028
Location: Kraków, Poland

Tomasz Grysztar

Look here for some hints: http://board.flatassembler.net/topic.php?t=4638

Or check out this ready solution:

Code:

macro addxsyntax [reg]
{
  macro reg param
  \{
     define status 0
     match =0 ++ , status param
     \\{
        inc reg
        define status 1
     \\}
     match =0 -- , status param
     \\{
        dec reg
        define status 1
     \\}
     match =0 +==src , status param
     \\{
        add reg,src
        define status 1
     \\}
     match =0 -==src , status param
     \\{
        sub reg,src
        define status 1
     \\}
     match =0 ==src , status param
     \\{
        mov reg,src
        define status 1
     \\}
     match =0 any , status param
     \\{
        unknown syntax
     \\}
  \}
}

Code:

addxsyntax ax,bx,cx,dx

ax = 2
bx += 7
cx--
dx++

29 Jan 2006, 09:39

RedGhost

Joined: 18 May 2005
Posts: 443
Location: BC, Canada

RedGhost

Tomasz Grysztar wrote:

Look here for some hints: http://board.flatassembler.net/topic.php?t=4638

Or check out this ready solution:

Code:

macro addxsyntax [reg]
{
  macro reg param
  \{
     define status 0
     match =0 ++ , status param
     \\{
        inc reg
        define status 1
     \\}
     match =0 -- , status param
     \\{
        dec reg
        define status 1
     \\}
     match =0 +==src , status param
     \\{
        add reg,src
        define status 1
     \\}
     match =0 -==src , status param
     \\{
        sub reg,src
        define status 1
     \\}
     match =0 ==src , status param
     \\{
        mov reg,src
        define status 1
     \\}
     match =0 any , status param
     \\{
        unknown syntax
     \\}
  \}
}

Code:

addxsyntax ax,bx,cx,dx

ax = 2
bx += 7
cx--
dx++

just fasm macro's code make a pretty damn powerful script language i think Shocked

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29 Jan 2006, 09:45

Slai

Joined: 11 Jan 2006
Posts: 40
Location: NY/Bulgaria

Slai

Great !

Thanks

29 Jan 2006, 23:18

OzzY

Joined: 19 Sep 2003
Posts: 1029
Location: Everywhere

OzzY

Wow! FASM is more than an assembler! With the macros it can be used to build new languages, scripting languages, packers with EXE self-extractor using "file" directive, and other cool stuff...

After messing so much with C/C++, I think I'll come back to FASM again and study/use it exclusivelly for some time... I'll try to write some small utilities and post at "project and ideas" forum.

05 Feb 2006, 04:17

llaurrentt

Joined: 02 Nov 2006
Posts: 13
Location: Liège / Belgium

llaurrentt

One of these days we'll end up having a set of macro that enable preprocessing of C or C++ code with FASM to produce assembly !!!

Just kidding Twisted Evil

but I really wonder why are these people trying to make assembly code like basic! Anyway it shows the power of FASM preprocessor Very Happy

04 Nov 2006, 10:00

scientica
Retired moderator

Joined: 16 Jun 2003
Posts: 689
Location: Linköping, Sweden

scientica

Quote:

One of these days we'll end up having a set of macro that enable preprocessing of C or C++ code with FASM to produce assembly !!!

Just kidding

Just wait, sooner or later someone will do it... Smile

(and it will do optimizations too Wink

)

06 Nov 2006, 11:21

tantrikwizard

Joined: 13 Dec 2006
Posts: 142

tantrikwizard

Tomasz Grysztar wrote:

Look here for some hints: http://board.flatassembler.net/topic.php?t=4638

Or check out this ready solution:
Code:
macro addxsyntax [reg]
<SNIP>.. }    
Code:
addxsyntax ax,bx,cx,dx

ax = 2
bx += 7
cx--
dx++    

Thomasz, Thank you for this post, I like the HLA type syntax at times.
I must be having a major brain fart because I cannot figure out the syntax of some of these more complex macros. I'm well familiar with the macro syntax of other assemblers (TASM, MASM, etc) but cannot, for the life of me, get my head around the FASM syntax. I've scoured through the documentation, examples, posts and tutorials but cannot figure out how these macros work. Would someone be so kind to detail in a step-by-step manner how these macros expand and are interpreted at assemble/process/preprocess time? Please no links! I've read them all and while many posts are very helpful, these are confusing to me.

Thanks in advance.

22 Jan 2008, 00:59

chris

Joined: 05 Jan 2006
Posts: 62
Location: China->US->China->?

chris

there is a fasm preprocessor which expands macros and dump the results to file. I often find it useful in understanding marcos. check it out here http://board.flatassembler.net/topic.php?t=4490

22 Jan 2008, 07:16

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