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f14t

Joined: 27 Sep 2006
Posts: 36

f14t 26 Oct 2006, 13:11

My fasm code should look like this:

random snippets ...

Code:

(1)
printf, "\n\tTried %u times\n\n", 10000000

(2)
mov eax, 3.14159265

(3)
.if st0 ge balance
   printf, "\tOver draft\n"
.endif

(4)
eax = ebx+ecx*edx

(5)
if a function have been declared or prototyped it's signatures should be used to enable high-level function calling.

(6)
Duplicate string constants should be merges into one.

eg:
   scanf "%f", addr bal
   scanf "%f", addr rate   

(7)
If, While construct should be implemented in Fasm itself and should not be
just emulated by macros.

(8)
Same for high level function declarations, local variables, structures
etc. they too should be implemented in Fasm itself.

(9)
Signed and unsigned comparisons in Constructs (If, while etc) may be
distinguished by using Mneomnic look alikes.
eg:
    ; signed
    .if eax ge 5
    .end if

    ; unsigned
    .if eax ae 5
    .end if

(10)
Full support for structures at Fasm level. (non macro)

(11)
Buildin preprocessed and assembled listings are missing.

(12)
Finally i believe that this should be compilable under core Fasm i.e. no
macro preprocessor emulation:

void sort(dword *array, dword length)
{
    for (eax = 0; eax < length; eax++)
    {
       for (ebx = 0; ebx < length-eax; ebx++)
       {
           edx = ebx + 1
           if (array[ebx] > array[edx])
           {
              ecx = array[ebx];
              array[ebx] = array[edx];
              array[edx] = ecx; 
            }
       }
    }
}

Please comment on these features ...

Tomasz Please think about it really... seriously...

More to come soon ehough ...

Please do not wake me up ... Shocked

Quote:

Day Dreaming is Productive Too

Last edited by f14t on 31 Oct 2006, 07:58; edited 2 times in total

26 Oct 2006, 13:11

vid
Verbosity in development

Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia

vid 26 Oct 2006, 13:31

- why WAS this posted in Projects/ideas?
- why store pi in EAX, which you can't use for floating point operations?
- how would you want code like this assembled (eg. what should be resulting instructions)?
eax=edx + (edx*eax) + (ecx*edx)

really, what you want is not assembly. sorry to wake you up Wink

26 Oct 2006, 13:31

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8359
Location: Kraków, Poland

Tomasz Grysztar 26 Oct 2006, 13:34

Except for the "mov eax, 3.14159265". which is pretty valid with fasm.

26 Oct 2006, 13:34

f14t

Joined: 27 Sep 2006
Posts: 36

f14t 26 Oct 2006, 13:36

I posted it here because it's an idea. Laughing

Thanks alot to you that i am absolutely woken up.

Wink

26 Oct 2006, 13:36

f14t

Joined: 27 Sep 2006
Posts: 36

f14t 26 Oct 2006, 13:40

Tomasz Grysztar wrote:

Except for the "mov eax, 3.14159265". which is pretty valid with fasm.

Hey vid now shoot me in head with a bulky-stone-age cannon.

Why do you think Tomasz's Fasm allows

Code:

mov eax, 3,14159265

Quote:

Pity is Good.

26 Oct 2006, 13:40

vid
Verbosity in development

Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia

vid 26 Oct 2006, 14:43

He allows it because floating point number can be represented by dword value. and dword value can be stored in EAX. But i was asking WHY to do it, not if it is possible.

26 Oct 2006, 14:43

dead_body

Joined: 21 Sep 2005
Posts: 187
Location: Ukraine,Kharkov

dead_body 26 Oct 2006, 14:48

the code like:
eax=eax*ecx-edx

is very hard to generate(optimized)

first, someone must do think like:
invoke MessageBox,0,"string1!\n!string2"," ",0
or db "\n",0 which is equal to db 13,10,0

and then all other.

26 Oct 2006, 14:48

vid
Verbosity in development

Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia

vid 26 Oct 2006, 16:06

in FASM, you use invoke MessageBox, 0, <"string1",13,10,"string2">, "", 0

26 Oct 2006, 16:06

f14t

Joined: 27 Sep 2006
Posts: 36

f14t 27 Oct 2006, 11:21

vid wrote:

He allows it because floating point number can be represented by dword value. and dword value can be stored in EAX. But i was asking WHY to do it, not if it is possible.

Vid you seem to me like really curious. So here's WHY

Code:

         cmp ebx, 5
         jb .lesser
         mov eax, 5.5
         jmp .rate_set
.lesser:
         mov eax, 2.2
         jmp .rate_set
         ;
         ; ...
         ;
.rate_set:
        mov [interest_rate], eax
        jmp .do_prinitng
       ;
       ; ...
       ;

27 Oct 2006, 11:21

vid
Verbosity in development

Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia

vid 27 Oct 2006, 11:24

this work? i am not sure about structure of flotaing point numbers, but i wouldn't count on this

27 Oct 2006, 11:24

f14t

Joined: 27 Sep 2006
Posts: 36

f14t 27 Oct 2006, 11:27

vid wrote:

this work? i am not sure about structure of flotaing point numbers, but i wouldn't count on this

Yeah, it works.

Count on me.

And everybody please see my additions to Fasm Wishlist regularly.

Last edited by f14t on 27 Oct 2006, 11:48; edited 1 time in total

27 Oct 2006, 11:27

vid
Verbosity in development

Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia

vid 27 Oct 2006, 11:40

Quote:

Yeah, it works.
Count on me.

i won't: http://en.wikipedia.org/wiki/IEEE_floating-point_standard#Single-precision_32_bit

upper bit is sign. so this doesn't work:

Code:

mov eax, -1  ;10111111100000...
cmp eax, 1    ;00111111100000...
jb lesser ;doesn't jump

neither does signed conditional jumps:

Code:

mov eax, 1  ;001111111000000...
cmp eax, 2  ;010000000000000...
jl lesser ;doesn't jump

so?

27 Oct 2006, 11:40

f14t

Joined: 27 Sep 2006
Posts: 36

f14t 27 Oct 2006, 11:51

Hey Buddy !

Please watch my code carefully before commenting on it.

Have you mistaken ebx for eax ?

27 Oct 2006, 11:51

vid
Verbosity in development

Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia

vid 27 Oct 2006, 13:02

no - explain

27 Oct 2006, 13:02

Madis731

Joined: 25 Sep 2003
Posts: 2139
Location: Estonia

Madis731 27 Oct 2006, 13:32

Yeah, the multiplying stuff would need a huge optimizing library:
http://www.azillionmonkeys.com/qed/amult.html
http://www.azillionmonkeys.com/qed/adiv.html

Otherwise it wouldn't make it any better to write this way....

27 Oct 2006, 13:32

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8359
Location: Kraków, Poland

Tomasz Grysztar 27 Oct 2006, 15:01

vid: yes, his code is an excellent example of why I also thought of this feature as useful. Note that fp values are just stored temporarily in EAX, to be later put in some place in memory. You can then do FLD or any other FPU operation on that memory, but to move it into the right place you could use the general register aswell, what saves you defining additional variables (that would anyway have to be moved through some register to place the values where you want them, finally).

27 Oct 2006, 15:01

Plue

Joined: 15 Dec 2005
Posts: 151

Plue 27 Oct 2006, 16:14

vid wrote:

He allows it because floating point number can be represented by dword value. and dword value can be stored in EAX. But i was asking WHY to do it, not if it is possible.

Pseudo-code:
A := 5.5 = FLOAT
Because this:

Code:

MOV    ecx, [v_FLOAT]
XOR    edx, edx
CMP    ecx, 1084227584
SETE   dl
MOV    [v_A], edx

is faster than this:

Code:

FLD    dword [v_FLOAT]
FLD    dword [F0]
XOr    ecx, ecx
FCOMIP st1
FSTP st0
JZ     rq_L1
MOV    ecx, 1
rq_L1:
MOV    [v_A], ecx
..
F0 dd 1085276160

_________________
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Violets are blue
Some poems rhyme
And some don't.

27 Oct 2006, 16:14

Dex4u

Joined: 08 Feb 2005
Posts: 1601
Location: web

Dex4u 27 Oct 2006, 16:52

This maybe a bit off topic(sorry), but one thing on my wishlist has nothing to do with fasms internals, it a fasm server that you can assemble you code by typing it into a browser and ether coming back with a zip file with the code assembed or error messages.
Great for code at school or work or internet cafe etc Wink

27 Oct 2006, 16:52

r22

Joined: 27 Dec 2004
Posts: 805

r22 29 Oct 2006, 19:41

Dex4u, that's a very secure idea for the server. Someone could send 40mb of gibberish and hang the server while it tries to compile it.

But the technology you are thinking of would be CGI with a few modifications to fasm's command line compiler.

29 Oct 2006, 19:41

vid
Verbosity in development

Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia

vid 29 Oct 2006, 20:01

somebody already did it i think. search board for few words of "fasm online compilation service".

problem arises with include files, and as tomasz said, it's possible to list files on server with "load" directive Wink

29 Oct 2006, 20:01

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