; flat assembler version 1.60
; Copyright (c) 1999-2005, Tomasz Grysztar
; All rights reserved.
;
; MenuetOS system.inc by VT
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: ;this part is already rewrited to 70th function
dd 7
dd 0
dd 0
dd 0
dd 0
fullpath_start: ; db '/RD/1/EXAMPLE'
times MAX_PATH db 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:
mov [memory_start],0x100000
mov [memory_end],0x100000+(APP_MEMORY-0x100000)/8*5
mov [additional_memory],0x100000+(APP_MEMORY-0x100000)/8*5
mov [additional_memory_end],APP_MEMORY
ret
exit_program:
cmp [_mode],NORMAL_MODE
je still
or eax,-1
int 0x40
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
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
create:
call make_fullpaths
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
int 0x40
popa
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
read:
pusha
mov edi,edx
mov esi,[filepos]
add esi,0x20000
cld
rep movsb
popa
; ret
close: ret
lseek:
cmp al,0
jnz @f
mov [filepos],0
@@: cmp al,1
jnz @f
@@: cmp al,2
jnz @f
mov eax,[filesize]
mov [filepos],eax
@@: mov eax,[filepos]
add eax,edx
mov [filepos],eax
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],OUTPUTXY 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
int 0x40
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],OUTPUTXY
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
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 }