2009-10-30 Linux assembler SDL

Open SDL window from asm. I tryed to open SDL window from asm. And that worked. Hardest thing is defining all structures from SDL headers. Windows opening and waiting while anykey will pressed.

include 'cdecl.inc'

format ELF

extrn SDL_Init
extrn SDL_SetVideoMode
extrn SDL_PollEvent
extrn SDL_Quit

;video settings
SDL_INIT_VIDEO	equ 0x00000020
SDL_FULLSCREEN	equ 0x80000000

;event settings
SDL_KEYDOWN         equ 2
SDL_MOUSEBUTTONDOWN equ 5

;programm settings
SCREEN_WIDTH equ 800
SCREEN_HEIGHT equ 600
SCREEN_BPP equ 24

struc SDL_keysym
{
	.scancode 	db 0
	.sym 		dd 0
	.mod		dd 0
	.unicode 	dd 0
}

struc SDL_KeyboardEvent
{
	.type  db 0
	.which db 0
	.state db 0
	.keysym SDL_keysym
}

struc SDL_Event
{
	.type db 0
	union SDL_KeyboardEvent
	.empty db 0,0,0
}

section '.text' executable
public _start
_start:
	ccall SDL_Init,SDL_INIT_VIDEO
	ccall SDL_SetVideoMode, SCREEN_WIDTH , SCREEN_HEIGHT , SCREEN_BPP , SDL_FULLSCREEN
	;try to make while loop
while_run:	
	while_polleEvent:
		ccall SDL_PollEvent, event
		cmp eax, 0
		je	while_polleEventquit
		cmp byte [event.type], SDL_KEYDOWN
		jne	while_polleEvent
		mov byte [run], 0
		jmp while_polleEvent
	while_polleEventquit:
	
	; if run != 1 quit
	cmp byte [run], 1	
	je	while_run
	
	ccall SDL_Quit, 0
	
	mov eax, 1
	xor ebx, ebx
	int 80h
	
section '.data' writeable
event		SDL_Event
run 		db 		1

Compile with lines:


fasm sdl.asm sdl.o

ld -dynamic-linker /lib/ld-linux.so.2 sdl.o /usr/lib/libSDL.so -o sdl

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