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flat assembler > Non-x86 architectures > import dll in PE for ARM

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flx



Joined: 27 Jan 2017
Posts: 4
import dll in PE for ARM
I am trying to write app (.exe) for WinCE on ARM which uses external dll.
How do I import dll in FASMARM for PE files?
I tried this

Code:

format PE

section '.code' code readable executable
<...>

section '.idata' import data readable
library coredll'coredll.dll'

import coredll,\
       MessageBoxW,'MessageBoxW'




and it says "illegal instruction" on "library coredll,'coredll.dll'".
Post 27 Jan 2017, 10:05
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 14584
Location: Planet Dirt
There are four example files for ARM PE in the fasmarm download. This is the second one and perhaps the one you are after:

Code:
; Example of building a WinCE executable using medium level macros

        include 'wince.inc'
        format  PE GUI
        entry   Start

section '.text' code readable executable

proc Start uses[lr]
        apscall MessageBoxW,0,addr Text,addr Caption,0
        ret
endp

Caption du      'ARM example MLI macros',0
Text    du      'Hello ArmCE world',0

section '.idata' import readable writeable

        library coredll,'COREDLL.DLL'
        include 'APICE\COREDLL.INC'

Post 27 Jan 2017, 10:14
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flx



Joined: 27 Jan 2017
Posts: 4
My fault not to look for example folder. Thank you, it works.
Post 27 Jan 2017, 10:42
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flx



Joined: 27 Jan 2017
Posts: 4
Ok, one more noob question. Now I need to export some functions from dll. How?
public and export macros don't work for WinCE on ARM (public does nothing, and export doesn't exist)
I also tried to construct export section manually, but I run into the issue that dd instruction always puts 0 after const, thus
dd 1,2 assembles to 0000001 00000000 00000002 00000000 instead of 00000001 00000002. How do I fix that?
Post 15 Feb 2017, 14:32
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 14584
Location: Planet Dirt
dd defines 64-bit values.
dw defines 32-bit values.
dh defines 16-bit values.
db defines 8-bit values.

BTW: public is not a macro. export is a macro.
Post 15 Feb 2017, 14:35
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flx



Joined: 27 Jan 2017
Posts: 4
That's unexpected. Compared to ARM's dcb, dcw, dcd, dcq.
But thank you, I took export.inc from FASM for x86, replaced dd's in it for dw and dw for dh, and got working export macro.
Post 15 Feb 2017, 15:00
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 14584
Location: Planet Dirt
Section 7 of the docs.
Post 15 Feb 2017, 15:06
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