CODEWITHSUNDEEP
windowsassemblyx86-64fasm
MoraFer
MoraFer

Reputation: 9

Call function with more than 4 parameters in ASM 64 bit, Windows 10

I compile the following code snippet in FASM 64bit for Windows 10, I generate my BIN, I import it in another language that runs this with CallWindProc, it works great when it is for a function with 4 parameters, what should I add to Can I call a function with 12 or more parameters, for example? I appreciate any suggestions.

push    rbp
mov     rbp, rsp
sub     rsp, 20h
mov     r9,  04A4B404h      ; param_04 - 04A4B404h
mov     r8,  03A3B303h      ; param_03 - 03A3B303h
mov     rdx, 02A2B202h      ; param_02 - 02A2B202h
mov     rcx, 01A1B101h      ; param_01 - 01A1B101h  
mov     rax, 00A0B000h      ; ptr funtion - 00A0B000h
call    rax
add     rsp, 20h
pop     rbp
retn

Try this but it doesn't work

mov     rax, 05A5B505h                  ; param_05 - 05A5B505h
mov     rsp, rax

Upvotes: 0

Views: 47

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