fasm as DLL

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vid
Verbosity in development

Joined: 05 Sep 2003
Posts: 7108
Location: Slovakia

vid

Doesn't the term "managed" mean code runs under some sort of virtual machine, like here ?

28 Apr 2009, 22:17

comrade

Joined: 16 Jun 2003
Posts: 1137
Location: Russian Federation

comrade

vid wrote:

Sorry, there is no 64-bit version of this code, and rewriting it would be a HUUUGE project. What do you need it for anyway? (AFAIK all systems that run 64-bit PE DLLs also support 32-bit code)

64-bit windows can run legacy x86 apps, but you can never mix and match 32-bit and 64-bit modules in the same process.

vid wrote:

Doesn't the term "managed" mean code runs under some sort of virtual machine, like here ?

Managed code is practically more of MSFT's term for .NET code. Since it is jitted and is ultimately run as native code, it can certainly interact with native code in DLLs inside the same process. Afaik with latest VS, you can target x86 and x64 even for .NET apps. Whatever the native target is, they have to match any native DLLs you are interop'ing with.

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comrade (comrade64@live.com; http://comrade.ownz.com/)

30 Apr 2009, 03:57

Azu

Joined: 16 Dec 2008
Posts: 1160

Azu

comrade wrote:

vid wrote:
Sorry, there is no 64-bit version of this code, and rewriting it would be a HUUUGE project. What do you need it for anyway? (AFAIK all systems that run 64-bit PE DLLs also support 32-bit code)

64-bit windows can run legacy x86 apps, but you can never mix and match 32-bit and 64-bit modules in the same process.

You can, if you don't mind the ~400 clock round trip performance penalty from switching back and forth.
You can even do it on a 32bit OS, with the help of a kernel mode driver.

comrade wrote:

vid wrote:
Doesn't the term "managed" mean code runs under some sort of virtual machine, like here ?

Managed code is practically more of MSFT's term for .NET code. Since it is jitted and is ultimately run as native code, it can certainly interact with native code in DLLs inside the same process. Afaik with latest VS, you can target x86 and x64 even for .NET apps. Whatever the native target is, they have to match any native DLLs you are interop'ing with.

Don't modern VMs run the code natively (on hardware, not emulated in software) also?

19 Aug 2009, 09:56

master92

Joined: 29 Dec 2008
Posts: 10

master92

Yardman wrote:

Tomasz,

Could FASMDLL.ZIP be updated to work with 1.67.27?

A slightly different structure of source includes does
not allow me to compile.

same problem with fasm 1.68...
don't get it compile...

Quote:

flat assembler version 1.68 (1878545 kilobytes memory)
fasmDLL\SOURCE\DLL\..\assemble.inc [2031]:
je invoked_error
error: undefined symbol 'invoked_error'.

would be great if someone could help me :) thanks

23 Aug 2009, 15:59

Tomasz Grysztar
Assembly Artist

Joined: 16 Jun 2003
Posts: 7521
Location: Kraków, Poland

Tomasz Grysztar

I have uploaded the new version of DLL, which works with the latest 1.69 cores. And it comes pre-assembled with 1.69.18 core, so you can use it to assemble AVX code.

There is no .fas-generating functionality available through the DLL API. If there is a demand for such feature I think I may in future expand the FASM_STATE structure to contain the pointers to various .fas blocks (just like the offset in the .fas header, but they would be a pointers to memory).

04 Sep 2010, 17:03

edemko

Joined: 18 Jul 2009
Posts: 549

edemko

cool TG

04 Sep 2010, 19:15

master92

Joined: 29 Dec 2008
Posts: 10

master92

Wow, thx.
My latest post was one year ago and I didn't think I'd get an answer after a few weeks. And now, one year later...
If the board didn't bring it to mind via e-mail, I probably wouldn't have noticed it Very Happy

Thank you for your work, Thomasz. Probably I'll resume my old project using FASM one day ;D

04 Sep 2010, 19:45

Abyx

Joined: 17 Apr 2008
Posts: 9

Abyx

Tomasz Grysztar, would you make fasm_Assemble stdcall? It doesn't preserve registers, so it's impossible to call it from HLL without an assembly wrapper.

The patch is

Code:

--- /fasm/SOURCE/DLL/old_FASM.ASM     !@ >:B 27 21:12:49 2010
+++ /fasm/SOURCE/DLL/FASM.ASM     !@ >:B 27 22:03:58 2010
@@ -95,7 +95,7 @@
     mov    eax,[hDisplayPipe]
     mov    [display_pipe],eax
 
-    push    ebp
+    push    ebp ebx esi edi
     mov    eax,esp
     mov    [esp_save],eax
     and    eax,not 0FFFh
@@ -111,8 +111,8 @@
     mov    [ebx+FASM_STATE.condition],FASM_OK
 
   done:
-    pop    ebp
     mov    eax,[ebx+FASM_STATE.condition]
+    pop    edi esi ebx ebp
     ret    20
 
   general_error:

Patched fasm.asm (for fasm.dll) in attach.

Description:		Download
Filename:	FASM.ASM
Filesize:	8.04 KB
Downloaded:	778 Time(s)

27 Oct 2010, 19:49

Tomasz Grysztar
Assembly Artist

Joined: 16 Jun 2003
Posts: 7521
Location: Kraków, Poland

Tomasz Grysztar

Oh, yes, sorry for that bug, I forgot.
I updated the attachment in first post.

27 Oct 2010, 19:57

Abyx

Joined: 17 Apr 2008
Posts: 9

Abyx

Thanks

28 Oct 2010, 06:02

ishkabible

Joined: 13 Sep 2010
Posts: 54

ishkabible

could this be use with c and c++ to do some JIT compiling? or am i misunderstanding how it works. dose it compile the file in memory so that you can save it to an executable or dose it actually load the program so that it can be run?

04 Nov 2010, 21:00

masonswanson

Joined: 17 Aug 2010
Posts: 51

masonswanson

you could use it from any hll which supports c calling conventions and dlls, it can take a null terminated string containing assembly and produce machine code using Assemble(char *) or it can assemble an indicated assembly file using Assemble_File(File)

03 Dec 2010, 13:27

ptr51

Joined: 22 Dec 2010
Posts: 1

ptr51

Hello!

Im trying to bould the fasm.dll as a MS COFF file instead to link it statically. But my asm is sort of at a less advanced level so i cant really figure out why it crashes in runtime inside fasm_Assemble.

Anyone here managed to build it as an obj? Any help would be greatly appreciated.

Test code:
compiled with /link FASM.OBJ

Code:

extern "C" unsigned int fasm_Assemble(char * szSource, unsigned char * lpMemory, int nSize, int nPassesLimit);

int main(int argc, char* argv[])
{
   unsigned char buf[4096];
   fasm_Assemble("mov eax, eax", buf, 4096, 100);
   return 0;
}

unified diff on how to mod FASM.ASM to make it compile is attached. (dont know if i got it right though)

Description:	vs 2008 error printscreen
Filesize:	108.07 KB
Viewed:	22728 Time(s)

Description:	how to make a .OBJ compile	Download
Filename:	fasm_dll_to_obj_diff.txt
Filesize:	1.92 KB
Downloaded:	883 Time(s)

22 Dec 2010, 14:42

masonswanson

Joined: 17 Aug 2010
Posts: 51

masonswanson

How Would I Turn This Into A Linux Shared Object File? (.so)

10 Apr 2011, 05:58

masonswanson

Joined: 17 Aug 2010
Posts: 51

masonswanson

For Some Reason I Can No Longer Access The Zip File In The First Post, Perhaps It Has Been Corrupted?

20 Feb 2012, 03:05

shutdownall

Joined: 02 Apr 2010
Posts: 518
Location: Munich

shutdownall

I can open it with no problems at all. Wink

21 Feb 2012, 22:39

masonswanson

Joined: 17 Aug 2010
Posts: 51

masonswanson

Yes well now i can, before the download was only 14Kb, i don't know what happened but it's seems fine now

25 Feb 2012, 07:24

kalambong

Joined: 08 Nov 2008
Posts: 165

kalambong

Tomasz Grysztar wrote:

The subject says all.

I've made fasm into a simple DLL which allows to assembly just inside the memory. The package contains short documentation, demonstration program (which uses also the AsmEdit in DLL form) and the SOURCE directory, which needs to be merged with SOURCE directory of standard fasm's distributions.

Tomasz,

Is 1.69.50 available as a DLL ?

06 Apr 2012, 08:48

Tomasz Grysztar
Assembly Artist

Joined: 16 Jun 2003
Posts: 7521
Location: Kraków, Poland

Tomasz Grysztar

Uploaded it now.

06 Apr 2012, 09:16

kalambong

Joined: 08 Nov 2008
Posts: 165

kalambong

Tomasz Grysztar wrote:

Uploaded it now.

Thank you very much, Tomasz !! Laughing

08 Apr 2012, 01:19

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