Subversion Repositories Kolibri OS

; flat assembler

; Copyright (c) 1999-2007, Tomasz Grysztar

; All rights reserved.

struc FILEIO

{   .cmd            dd ?

    .offset         dd ?

                    dd ?

    .count          dd ?

    .buff           dd ?

                    db ?

    .name           dd ?

};

struc FILEINFO

{   .attr           dd ?

    .flags          dd ?

    .cr_time        dd ?

    .cr_date        dd ?

    .acc_time       dd ?

    .acc_date       dd ?

    .mod_time       dd ?

    .mod_date       dd ?

    .size           dd ?

}

;file_info_open:  dd 0,0,0xffffff,0x20000,0xf0000

fullpath_open:  ;  db '/RD/1/EXAMPLE.ASM'

		    times MAX_PATH db 0

;file_info_write: dd 1,0,0,0,0xf0000

fullpath_write:; db '/RD/1/EXAMPLE'

		    times MAX_PATH db 0

file_info_start:

    dd 7

    dd 0

    dd 0

    dd 0

    dd 0

fullpath_start:  ; db '/RD/1/EXAMPLE'

		    times MAX_PATH db 0

file_info_debug:

	dd	7

	dd	0

	dd	fullpath_start

	dd	0, 0

	db	'/SYS/DEVELOP/MTDBG',0

_ramdisk	 db '/RD/1/'

filepos 	 dd 0x0

; info by Privalov: starting from FASM 1.51

;   ~3/8 - additional memory

;   ~5/8 - main memory

init_memory:

	mcall	18, 16

	cmp	eax, 0xFFFFFFFF shr 9

	jbe	@f

	mov	eax, 0xFFFFFFFF shr 9

@@:

	shl	eax, 9

	lea	ecx, [eax+stacktop]

	mcall	64, 1

	mov	[memory_start], stacktop

	mov	[additional_memory_end], ecx

	sub	ecx, stacktop

	shr	ecx, 3

	lea	ecx, [ecx*5+stacktop]

	mov	[memory_end],ecx

	mov	[additional_memory],ecx

	ret

exit_program:

	cmp	[_mode],NORMAL_MODE

	jne	@f

	mcall	64, 1, stacktop

	jmp	still

@@:

	or	eax,-1

	mcall

make_timestamp:

	push	ebx

	mcall	26,9

	imul	eax,10

	pop	ebx

	ret

get_environment_variable:

	mov	ecx,[memory_end]

	sub	ecx,edi

	cmp	ecx,7

	jb	out_of_memory

	cmp	dword[esi],'INCL'

	jne	.finish

	mov	esi,_ramdisk

	mov	ecx,6

	cld

	rep	movsb

  .finish:

;       stc

	ret

alloc_handle:

        call    make_fullpaths

        mov     ebx, fileinfos+4

@@:

        cmp     dword [ebx], -1

        jz      .found

        add     ebx, 4+20+MAX_PATH

        cmp     ebx, fileinfos_end

        jb      @b

        stc

        ret

.found:

        and     dword [ebx+4], 0

        and     dword [ebx+8], 0

        push    esi edi ecx

        mov     esi, fullpath_open

        lea     edi, [ebx+20]

        mov     ecx, MAX_PATH

        rep     movsb

        pop     ecx edi esi

        ret	; CF=0

create:

        call    alloc_handle

        jc      .ret

        and     dword [ebx-4], 0

        mov     dword [ebx], 2

.ret:

        ret

open:

;        call    make_fullpaths

;;       mov     eax,fullpath_open

;;       DEBUGF  '"%s"\n',eax

;        mov     dword[file_info_open+8],-1

;        mcall   58,file_info_open

;        or      eax,eax                 ; found

;        jz      @f

;        cmp     eax,6

;        jne     file_error

;@@: mov [filesize],ebx

;        clc

;        ret

;file_error:

;        stc

;        ret

        call    alloc_handle

        jc      .ret

        mov     dword [ebx], 5

        and     dword [ebx+12], 0

        mov     dword [ebx+16], fileinfo

        mov     eax, 70

        push    ebx

        mcall

        pop     ebx

        test    eax, eax

        jnz     .fail

        mov     eax, [fileinfo.size]

        mov     [ebx-4], eax

        and     dword [ebx], 0

.ret:

        ret

.fail:

	or	dword [ebx], -1	; close handle

        stc

        ret

read:

;          pusha

;          mov     edi,edx

;          mov     esi,[filepos]

;          add     esi,0x20000

;          cld

;          rep     movsb

;          popa

;;         ret

        mov     [ebx+12], ecx

        mov     [ebx+16], edx

        push    ebx

        mov     eax, 70

        mcall

        xchg    eax, [esp]

        add     [eax+4], ebx

        adc     [eax+8], dword 0

        mov     ebx, eax

        pop     eax

        test    eax, eax

        jz      .ok

        cmp     eax, 6

        jz      .ok

        stc

.ok:

        ret

close:

        or      dword [ebx], -1

        ret

; ebx file handle

; ecx count of bytes to write

; edx pointer to buffer

write:

;        pusha

;        mov     [file_info_write+8],ecx

;        mov     [file_info_write+12],edx

;        mov     [filesize],edx

;        mov     eax,58

;        mov     ebx,file_info_write

;        mcall

;        popa

;        ret

        mov     [ebx+12], ecx

        mov     [ebx+16], edx

        push    ebx

        mov     eax, 70

        mcall

        xchg    eax, [esp]

        add     [eax+4], ebx

        adc     [eax+8], dword 0

        mov     ebx, eax

        pop     eax

        mov     byte [ebx], 3

        cmp     eax, 1

        cmc

        ret

make_fullpaths:

	pusha

	push	edx

	mov	esi,path	      ; open

;       DEBUGF  "   '%s'",esi

	mov	edi,fullpath_open

	cld

      newc1:

	movsb

	cmp	byte[esi],0;' '

	jne	newc1

	mov	esi,[esp]

	cmp	byte[esi],'/'

	jne	@f

	mov	edi,fullpath_open

    @@:

	lodsb

	stosb

	cmp	al,0

	jne	@b

;       mov     ecx,12

;       cld

;       rep     movsb

;       mov     byte[edi],0

	mov	esi,path	      ; write

	mov	edi,fullpath_write

	cld

      newc2:

	movsb

	cmp	byte[esi],0;' '

	jne	newc2

	mov	esi,[esp]

	cmp	byte[esi],'/'

	jne	@f

	mov	edi,fullpath_write

    @@:

	lodsb

	stosb

	cmp	al,0

	jne	@b

;        mov     ecx,12

;        cld

;        rep     movsb

;        mov     byte[edi],0

	mov	esi,path	      ; start

	mov	edi,fullpath_start

	cld

      newc3:

	movsb

	cmp  byte[esi],0;' '

	jne  newc3

;        mov  esi,[esp]

	pop	esi

	cmp	byte[esi],'/'

	jne	@f

	mov	edi,fullpath_start

    @@:

	lodsb

	stosb

	cmp	al,0

	jne	@b

;        mov  ecx,12

;        cld

;        rep  movsb

;        mov  byte[edi],0

;        add  esp,4

	popa

	ret

lseek:

	cmp	al,0

	jnz	@f

	and	dword [ebx+4], 0

	and     dword [ebx+8], 0

    @@: cmp	al,2

	jnz	@f

	mov	eax, [ebx-4]

	mov	[ebx+4], eax

	and     dword [ebx+8], 0

    @@: add	dword [ebx+4], edx

        adc     dword [ebx+8], 0

	ret

display_character:

	pusha

	cmp	[_mode],NORMAL_MODE

	jne	@f

	cmp	dl,13

	jz	dc2

	cmp	dl,0xa

	jnz	dc1

	and	[textxy],0x0000FFFF

	add	[textxy], 7 shl 16 +53 and 0xFFFF0000 + 10

dc2:

  popa

	ret

dc1:

  mov eax,[textxy]

	cmp	ax,word[bottom_right]

	ja	dc2

	shr	eax,16

	cmp	ax,word[bottom_right+2]

	ja	dc2

	mov	[dc],dl

	mcall	4,[textxy],[sc.work_text],dc,1

	add	[textxy],0x00060000

	popa

	ret

@@:

  mov	eax,63

	mov	ebx,1

	mov	cl,dl

	mcall

	popa

	ret

display_string:

	pusha

@@:

  cmp	byte[esi],0

	je	@f

	mov	dl,[esi]

	call	display_character

	add	esi,1

	jmp	@b

@@:

  popa

	ret

display_number:

	push	ebx

	mov	ecx,1000000000

	xor	edx,edx

	xor	bl,bl

display_loop:

	div	ecx

	push	edx

	cmp	ecx,1

	je	display_digit

	or	bl,bl

	jnz	display_digit

	or	al,al

	jz	digit_ok

	not	bl

display_digit:

	mov	dl,al

	add	dl,30h

	push	ebx ecx

	call	display_character

	pop	ecx ebx

digit_ok:

	mov	eax,ecx

	xor	edx,edx

	mov	ecx,10

	div	ecx

	mov	ecx,eax

	pop	eax

	or	ecx,ecx

	jnz	display_loop

	pop	ebx

	ret

display_user_messages:

;    push   [skinh]

;    pop    [textxy]

;    add    [textxy], 7 shl 16 +53

	mov	[displayed_count],0

	call	flush_display_buffer

	cmp	[displayed_count],1

	jb	line_break_ok

	je	make_line_break

	mov	ax,word[last_displayed]

	cmp	ax,0A0Dh

	je	line_break_ok

	cmp	ax,0D0Ah

	je	line_break_ok

make_line_break:

	mov	esi,lf

	call	display_string

line_break_ok:

	ret

display_block:

	pusha

@@: mov dl,[esi]

	call	display_character

	inc	esi

	loop	@b

	popa

	ret

fatal_error:

	mov	esi,error_prefix

	call	display_string

	pop	esi

	call	display_string

	mov	esi,error_suffix

	call	display_string

	mov	esi,lf

	call	display_string

	mov	al,0FFh

	jmp	exit_program

assembler_error:

	call	display_user_messages

	push	dword 0

	mov	ebx,[current_line]

get_error_lines:

	push	ebx

	test	byte [ebx+7],80h

	jz	display_error_line

	mov	edx,ebx

find_definition_origin:

	mov	edx,[edx+12]

	test	byte [edx+7],80h

	jnz	find_definition_origin

	push	edx

	mov	ebx,[ebx+8]

	jmp	get_error_lines

display_error_line:

	mov	esi,[ebx]

	call	display_string

	mov	esi,line_number_start

	call	display_string

	mov	eax,[ebx+4]

	and	eax,7FFFFFFFh

	call	display_number

	mov	dl,']'

	call	display_character

	pop	esi

	cmp	ebx,esi

	je	line_number_ok

	mov	dl,20h

	call	display_character

	push	esi

	mov	esi,[esi]

	movzx	ecx,byte [esi]

	inc	esi

	call	display_block

	mov	esi,line_number_start

	call	display_string

	pop	esi

	mov	eax,[esi+4]

	and	eax,7FFFFFFFh

	call	display_number

	mov	dl,']'

	call	display_character

line_number_ok:

	mov	esi,line_data_start

	call	display_string

	mov	esi,ebx

	mov	edx,[esi]

	call	open

	mov	al,2

	xor	edx,edx

	call	lseek

	mov	edx,[esi+8]

	sub	eax,edx

	push	eax

	xor	al,al

	call	lseek

	mov	ecx,[esp]

	mov	edx,[additional_memory]

	lea	eax,[edx+ecx]

	cmp	eax,[additional_memory_end]

	ja	out_of_memory

	call	read

	call	close

	pop	ecx

	mov	esi,[additional_memory]

get_line_data:

	mov	al,[esi]

	cmp	al,0Ah

	je	display_line_data

	cmp	al,0Dh

	je	display_line_data

	cmp	al,1Ah

	je	display_line_data

	or	al,al

	jz	display_line_data

	inc	esi

	loop	get_line_data

display_line_data:

	mov	ecx,esi

	mov	esi,[additional_memory]

	sub	ecx,esi

	call	display_block

	mov	esi,cr_lf

	call	display_string

	pop	ebx

	or	ebx,ebx

	jnz	display_error_line

	mov	esi,error_prefix

	call	display_string

	pop	esi

	call	display_string

	mov	esi,error_suffix

	call	display_string

	jmp	exit_program

align 4

fileinfo FILEINFO

character   db ?,0

bytes_count dd ?

textxy	 dd 0x000500A0

dc	 db 0x0

filesize dd 0x0

displayed_count dd ?

last_displayed	rb 2

error_prefix	  db 'error: ',0

error_suffix	  db '.',0

line_data_start   db ':'

cr_lf		  db 0Dh,0Ah,0

line_number_start db ' [',0

macro dm string { db string,0 }