sol_fasm.asm

一个用纯汇编 写的操作系统 源代码 是用 TASM 编译器写的

;---------------------------------------------------
; flat assembler interface for Win32
; Copyright (c) 1999-2006, Tomasz Grysztar.
; All rights reserved.
;----------------------------------------------------

;------------------------------------------------
; FASM port to Solar_OS 
; copyright (c) 2007 by Bogdan Valentin Ontanu
; All rights reserved.
;------------------------------------------------ 

	format	PE console


;-------------------------
; Create SOL Main window
;-------------------------
start:
	call	Create_Main_Window
	xor	eax,eax
	ret

;---------------------------------------------
; This will be invoked on "compile" button
;---------------------------------------------
start_fasm:
	mov	esi,_logo
	call	display_string

	call	get_params
	jc	information

	call	init_memory

	mov	esi,_memory_prefix
	call	display_string
	
	mov	eax,[memory_end]
	sub	eax,[memory_start]
	add	eax,[additional_memory_end]
	sub	eax,[additional_memory]
	shr	eax,10
	call	display_number
	
	mov	esi,_memory_suffix
	call	display_string

	;call	[GetTickCount]
	mov	eax,1122
	mov	[start_time],eax

	call	preprocessor
	call	parser
	call	assembler
	call	formatter

	call	display_user_messages
	
	movzx	eax,[current_pass]
	inc	eax
	call	display_number
	mov	esi,_passes_suffix
	call	display_string
	
;	call	[GetTickCount]
	mov	eax,3344
	sub	eax,[start_time]
	
	xor	edx,edx
	mov	ebx,100
	div	ebx
	or	eax,eax
	jz	display_bytes_count
	xor	edx,edx
	mov	ebx,10
	div	ebx
	push	edx
	call	display_number
	
	mov	dl,'.'
	call	display_character
	
	pop	eax
	call	display_number

	mov	esi,_seconds_suffix
	call	display_string

      display_bytes_count:
	mov	eax,[written_size]
	call	display_number

	mov	esi,_bytes_suffix
	call	display_string

	xor	al,al
	jmp	exit_program

information:
	mov	esi,_usage
	call	display_string
	
	mov	al,1
	jmp	exit_program



get_params:
	mov	[memory_setting],0
	mov	[passes_limit],100

	call	get_cmd_line

	mov	esi,eax
	mov	edi,params
    find_command_start:
	lodsb
	cmp	al,20h
	je	find_command_start
	cmp	al,22h
	je	skip_quoted_name
    skip_name:
	lodsb
	cmp	al,20h
	je	find_param
	or	al,al
	jz	all_params
	jmp	skip_name
    skip_quoted_name:
	lodsb
	cmp	al,22h
	je	find_param
	or	al,al
	jz	all_params
	jmp	skip_quoted_name
    find_param:
	lodsb
	cmp	al,20h
	je	find_param
	cmp	al,22h
	je	string_param
	cmp	al,'-'
	je	option_param
	cmp	al,0Dh
	je	all_params
	or	al,al
	jz	all_params
	inc	edi
	mov	ebx,edi
    copy_param:
	stosb
	lodsb
	cmp	al,20h
	je	param_end
	cmp	al,0Dh
	je	param_end
	or	al,al
	jz	param_end
	jmp	copy_param
    string_param:
	inc	edi
	mov	ebx,edi
    copy_string_param:
	lodsb
	cmp	al,22h
	je	string_param_end
	cmp	al,0Dh
	je	param_end
	or	al,al
	jz	param_end
	stosb
	jmp	copy_string_param
    option_param:
	lodsb
	cmp	al,'m'
	je	memory_option
	cmp	al,'M'
	je	memory_option
	cmp	al,'p'
	je	passes_option
	cmp	al,'P'
	je	passes_option
    bad_params:
	stc
	ret
    get_option_value:
	xor	eax,eax
	mov	edx,eax
    get_option_digit:
	lodsb
	cmp	al,20h
	je	option_value_ok
	cmp	al,0Dh
	je	option_value_ok
	or	al,al
	jz	option_value_ok
	sub	al,30h
	jc	invalid_option_value
	cmp	al,9
	ja	invalid_option_value
	imul	edx,10
	jo	invalid_option_value
	add	edx,eax
	jc	invalid_option_value
	jmp	get_option_digit
    option_value_ok:
	dec	esi
	clc
	ret
    invalid_option_value:
	stc
	ret
    memory_option:
	lodsb
	cmp	al,20h
	je	memory_option
	cmp	al,0Dh
	je	bad_params
	or	al,al
	jz	bad_params
	dec	esi
	call	get_option_value
	or	edx,edx
	jz	bad_params
	cmp	edx,1 shl (32-10)
	jae	bad_params
	mov	[memory_setting],edx
	jmp	find_param
    passes_option:
	lodsb
	cmp	al,20h
	je	passes_option
	cmp	al,0Dh
	je	bad_params
	or	al,al
	jz	bad_params
	dec	esi
	call	get_option_value
	or	edx,edx
	jz	bad_params
	cmp	edx,10000h
	ja	bad_params
	mov	[passes_limit],dx
	jmp	find_param
    param_end:
	dec	esi
    string_param_end:
	xor	al,al
	stosb
	mov	eax,edi
	sub	eax,ebx
	mov	[ebx-1],al
	jmp	find_param
    all_params:
	xor	al,al
	stosb
	cmp	[params],0
	je	bad_params
	lea	eax,[params+1]
	mov	[input_file],eax
	mov	[output_file],0
	movzx	ecx,byte [eax-1]
	add	eax,ecx
	cmp	byte [eax],0
	je	params_ok
	inc	eax
	mov	[output_file],eax
	movzx	ecx,byte [eax-1]
	add	eax,ecx
	cmp	byte [eax],0
	jne	bad_params
    params_ok:
	clc
	ret

include 'sol_system.inc'

include '..\version.inc'

_copyright db 'Copyright (c) 1999-2005, Tomasz Grysztar',0Dh,0Ah,0

_logo db 'flat assembler  version ',VERSION_STRING,0
_usage db 0Dh,0Ah
       db 'usage: fasm <source> [output]',0Dh,0Ah
       db 'optional settings:',0Dh,0Ah
       db ' -m <limit>  set the limit in kilobytes for the memory available to assembler',0Dh,0Ah
       db ' -p <limit>  set the maximum allowed number of passes',0D,0Ah
       db 0
_memory_prefix db '  (',0
_memory_suffix db ' kilobytes memory)',0Dh,0Ah,0
_passes_suffix db ' passes, ',0
_seconds_suffix db ' seconds, ',0
_bytes_suffix db ' bytes.',0Dh,0Ah,0

include '..\errors.inc'
include '..\expressi.inc'
include '..\preproce.inc'
include '..\parser.inc'
include '..\assemble.inc'
include '..\formats.inc'
include '..\x86_64.inc'
include '..\tables.inc'

align 4

include '..\variable.inc'

memory_setting dd ?
start_time dd ?

params rb 1000h
buffer rb 4000h

stack 10000h

section '.idata' import data readable writeable

	dd 0,0,0,rva sol_dll_name, rva sol_iat_table
	dd 0,0,0,0,0


sol_iat_table:

	API_Debug_Out_String		dd	rva _api_debug_out_string
	API_File_Open			dd	rva _api_file_open
	API_File_Close			dd	rva _api_file_close
	API_File_Read			dd	rva _api_file_read
	API_File_Get_Size		dd	rva _api_file_get_size


	API_Memory_Allocate		dd	rva _api_memory_allocate
	API_Memory_Release		dd	rva _api_memory_release

	API_Text_Draw			dd	rva _api_text_draw

	API_Window_Create		dd	rva _api_window_create
	API_Window_Set_Caption		dd	rva _api_window_set_caption
	API_Window_Set_Callback		dd	rva _api_window_set_callback
	API_Window_Get_Caption		dd	rva _api_window_get_caption	
	API_Window_Get_Addr		dd	rva _api_window_get_addr	
	
	App_View_Memory_Init		dd	rva _app_view_memory_init
	App_View_Pe_Init		dd	rva _app_view_pe_init
	App_View_Text_Init		dd	rva _app_view_text_init

; end of IAT imports	
dd 0		
	
; DLL Name
sol_dll_name	db	"sol_os_coff.dll",0

; Import function names

	_api_debug_out_string		db	0,0,"API_Debug_Out_String",0

	_api_file_open			db	0,0,"API_File_Open",0
	_api_file_close			db	0,0,"API_File_Close",0
	_api_file_read			db	0,0,"API_File_Read",0
	_api_file_get_size		db	0,0,"API_File_Get_Size",0
	

	_api_memory_allocate		db	0,0,"API_Memory_Allocate",0
	_api_memory_release		db	0,0,"API_Memory_Release",0

	_api_text_draw			db	0,0,"API_Text_Draw",0
	
	_api_window_create		db	0,0,"API_Window_Create",0
	_api_window_set_caption		db	0,0,"API_Window_Set_Caption",0	
	_api_window_set_callback	db	0,0,"API_Window_Set_Callback",0
	_api_window_get_caption		db	0,0,"API_Window_Get_Caption",0	
	_api_window_get_addr		db	0,0,"API_Window_Get_Addr",0				

	
	; funny: importing full applications as an API ;)
	_app_view_memory_init		db	0,0,"App_View_Memory_Init",0
	_app_view_pe_init		db	0,0,"App_View_Pe_Init",0
	_app_view_text_init		db	0,0,"App_View_Text_Init",0
	
	

section '.reloc' fixups data readable discardable