The attached project displays the classical blank window created with CreateWindowEx. The source code is based on the Win64_2 example supplied with HJWasm package.
Very nice, Erol :t
Compliments Erol, nice clean code. I moved it to the 64 bit section so more people can see it.
LATER : I just had a good read of Pelle's help file and POASM has some very good features, when I have enough ML64 stuff going I may end up doing some work in POASM as there are many useful things it can do.
LATER AGAIN : Erol, I have a question for you, I changed the linker option to /LARGEADDRESSAWARE without the :NO but it would not assemble. I there a way to get this option working so that you can allocate very large memory ?
It is on by default, see http://forum.pellesc.de/index.php?topic=1355.0
use rip for LARGEADDRESSAWARE version.
Thanks Tim, works fine here.
Quote from: TWell on September 21, 2016, 04:51:42 PM
use rip for LARGEADDRESSAWARE version.
chokes on
include SimpleWnd.inc (which is not in the archive)
It is in Vortex example.
Hi Hutch,
I didn't knew the Relative Addressing notation and this is why I was not able to specify the LARGEADDRESSAWARE option. With thanks to TWell, the problem is solved easily. I managed to move the strings in the .data section to the stack to avoid the Relative Addressing but this is not a practical solution :
.model flat,fastcall
include SimpleWnd.inc
.code
start PROC PARMAREA=4*QWORD
LOCAL hInstance:QWORD
LOCAL CommandLine:QWORD
invoke GetModuleHandleA,NULL
mov hInstance,rax
invoke GetCommandLineA
mov CommandLine,rax
mov rax,'ssalCdW'
push rax
mov rax,'wodniW'
push rax
lea rax,[rsp+8] ; the hPrevInst parameter used to store
; the pointers to the strings in the stack
invoke WinMain,hInstance,rax,CommandLine,SW_SHOWDEFAULT
add rsp,2*8
invoke ExitProcess,rax
.
.
.
start ENDP
Attached is this version of the code.
I simplified the code to move only the two uninitialized variables to the stack :
.data
ClassName db "WndClass",0
AppName db "Window",0
.data?
hInstance QWORD ?
CommandLine QWORD ?
.code
start PROC PARMAREA=4*QWORD
LOCAL hInstance:QWORD
LOCAL CommandLine:QWORD
The source code is assembled without using the Relative Addressing rip expression.
Thanks Erol, this one works fine and with the /LARGEADDRESSAWARE its capable of allocating and accessing very large memory. I don't have the exact details but I know from the work on ML64 that some mnemonics cannot be used with /LARGEADDRESSAWARE as they required "fixups" from 32 bit addressing mode. I wonder if anyone can impose on Pelle to tweak this limitation as POASM is a good tool that has a very good feature set.
simple version for startupWinMainCRTStartup PROC PARMAREA=4*QWORD
invoke GetModuleHandleA,NULL
mov rcx,rax
invoke GetCommandLineA
invoke WinMain,rcx,NULL,rax,SW_SHOWDEFAULT
invoke ExitProcess,rax
WinMainCRTStartup ENDPeven that GetCommandLineA can be called where you really need it