WebSVN – Kolibri OS – Blame – /programs/develop/ktcc/trunk/libc/gcc compile programs/start.asm

Rev	Author	Line No.	Line
696	andrew_pro	1	format ELF
		2
		3	section '.text' executable
		4
		5	public start_
		6
		7	extrn main
		8
		9	buf_len = 0x400
		10	max_parameters=0x20
		11
		12	start_:
		13	db 'MENUET01' ; 1. Magic number (8 bytes)
		14	dd 0x01 ; 2. Version of executable file
		15	dd start__ ; 3. Start address
		16	dd 0x0 ; 4. Size of image
		17	dd 0x100000 ; 5. Size of needed memory
		18	dd 0x100000 ; 6. Pointer to stack
		19	hparams dd params ; 7. Pointer to program arguments
		20	hpath dd path ; 8. Pointer to program path
		21
		22	start__:
		23
		24	;init heap of memory
		25	mov eax,68
		26	mov ebx,11
		27	int 0x40
		28
		29	mov ebx,path
		30	mov ecx,dword buf_len
		31	add ebx,ecx
		32
		33	next_simbol_check:
		34	xor eax,eax
		35	mov al,[ebx]
		36	cmp al,'/'
		37	je simbol_fined
		38	dec ebx
		39	dec ecx
		40	jnz next_simbol_check
		41
		42	simbol_fined:
		43	inc ebx
		44
		45	mov [argc],dword 1
		46	mov edx,argv
		47	mov [edx],ebx ;argument number 0 - program name
		48
		49	cmp [params],byte 0
		50	je exit_find_params
		51
		52	mov [argc],dword 2
		53	mov ebx,params
		54	add edx,4
		55	mov [edx],ebx
		56
		57	next_symbol_parse:
		58	xor eax,eax
		59	mov al,[ebx]
		60	test al,al
		61	jz exit_find_params
		62	cmp al,' '
		63	je save_param
		64
		65	inc ebx
		66	jmp next_symbol_parse
		67	save_param:
		68
		69	mov [ebx],byte 0
		70	inc ebx
		71	add edx,4
		72	mov [edx],ebx
		73	inc [argc]
		74
		75	cmp [argc],max_parameters
		76	jae exit_find_params
		77
		78	jmp next_symbol_parse
		79
		80	exit_find_params:
		81
		82	push argv
		83	push [argc]
		84
		85	call main
		86	exit:
		87
		88	xor eax,eax
		89	dec eax
		90	int 0x40
		91	dd -1
		92	crash:
		93	jmp exit
		94
		95	public params as '__argv'
		96	public path as '__path'
		97
		98	section '.bss'
		99	argc rd 1
		100	argv rd max_parameters
		101	path rb buf_len
		102	params rb buf_len

Subversion Repositories Kolibri OS