2008-02-08 14:41:42 +03:00
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include "macros.inc"
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;
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; OS function implementation
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; SmallC for KolibriOS
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;
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;B+ General definitions
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;B+ File defs
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;const
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;param
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BAD equ -1
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files equ 100
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2008-02-17 18:56:13 +03:00
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save_buffer equ 0x20000 ;32
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2008-02-08 14:41:42 +03:00
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save_buffer_w equ 0x400000 ;32
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save_file_name equ 0x20000
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;system
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EOF equ -1
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;memory
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fileinfo equ I_END
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start_data equ (fileinfo+16384)
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;
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mem_heap equ 0x100000
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;
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g_handle equ 0x300000
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;dword - pointer - relative to file
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;dword - begin of file
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;dword - file size
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;dword - 0/1 <=> read/write
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;E:.
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;E:.
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init_osfunc:
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;B+ Init OS functions
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;B+ Clear file handles
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mov edi,g_handle
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mov ecx,files
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shl ecx,2 ;*4
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xor eax,eax
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cld
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rep stosd
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;E:.
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ret
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;E:.
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;B+ Main OS functions
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ppp dd 70
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_OS_fopen:
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;B+ Implement "fopen"
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;esp+4 - mode
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;esp+8 - file name
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; mov eax,-1
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; int 0x40
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; mov ebx,[esp+8];
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; push dword 10
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; push dword [ppp]
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; push ebx
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; push dword 12
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; call _outstrg
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; add esp,4*4
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; add [ppp],10
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; cmp byte [ebx+8],0
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; jne .l
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; mov byte [ebx+8],'?'
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;.l:
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; cmp [ppp],80
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; je .l
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mov ecx , [esp+4] ; file mode
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mov [file_mode],ecx
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;B+ Copy file name
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2008-02-17 18:56:13 +03:00
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2008-02-08 14:41:42 +03:00
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mov esi,[esp+8]
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mov edi,[p_filename]
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mov ecx,12
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.next_copy:
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lodsb
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;fill name (space)
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or al,al
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jz .fill_space
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;set upper case
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cmp al,'a'
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jb .good_char
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cmp al,'z'
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ja .good_char
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add al,'A'-'a'
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.good_char:
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stosb
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dec ecx
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jnz .next_copy
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.fill_space:
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mov al,' '
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cld
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rep stosb
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mov eax,[file_mode]
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cmp byte [eax],'w'
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jne .no_wri
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;B+ Copy file name
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mov esi,[esp+8]
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mov edi,[w_file_name]
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mov ecx,12
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.next_copy2:
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lodsb
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;fill name (space)
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or al,al
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jz .fill_space2
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;set upper case
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cmp al,'a'
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jb .good_char2
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cmp al,'z'
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ja .good_char2
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add al,'A'-'a'
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.good_char2:
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stosb
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dec ecx
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jnz .next_copy2
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.fill_space2:
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2008-02-17 18:56:13 +03:00
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;mov al,' '
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;cld
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2008-02-08 14:41:42 +03:00
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rep stosb
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.no_wri:
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;E:.
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;B+ Find file handle
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mov eax,g_handle
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.new_handle:
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cmp dword [eax+4],0
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je .find_place
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add eax,16
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cmp eax,g_handle+files*16-16
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jne .new_handle
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xor eax,eax ; no free handle
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ret
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.find_place:
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; TMP: mov eax,[.ccc]
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; TMP: add [.ccc],16
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;E:.
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push eax
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;B+ Test open mode
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mov eax,[esp+4+4]
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cmp byte [eax],'r'
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je .open_read
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cmp byte [eax],'w'
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je .open_write
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;bad mode
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add esp,4
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mov eax,eax ; invalid open mode
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ret
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;E:.
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; TMP:.ccc dd g_handle
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.open_read:
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;B+ Open for read
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;B+ Read file
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;Wait to read correct
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mov ebx,100
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mov eax,5
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int 0x40
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mov eax,[g_fileend]
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mov dword [file_parameters+2*4],2000 ;read all
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mov dword [file_parameters+3*4],eax
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mov dword [file_parameters],0
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mov ebx,file_parameters
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mov eax,58
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int 0x40
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;E:.
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;B+ TEST FILE FOUND
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or eax,eax
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jz .file_found
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cmp eax,5
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je .file_found
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; mov ecx,eax ; eax
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; mov ebx,8 shl 16 + 0x0100
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; mov edx,100 shl 16 + 120
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; mov esi,0xffffff
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; mov eax,47
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; int 0x40
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;file not found - return 0
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add esp,4
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xor eax,eax
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ret
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.file_found:
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;E:.
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pop eax
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push ebx
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xchg eax,ebx
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;B+ Fill file handle
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;save current pointer
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xor eax,eax
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mov [ebx],eax
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;save file begin
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mov eax,[g_fileend]
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mov [ebx+4],eax
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;save file size
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pop eax
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mov [ebx+8],eax
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;reserve file zone
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add eax,7
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and eax,not 7
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add [g_fileend],eax
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;save file mode
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mov eax,0 ;read
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mov [ebx+12],eax
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;E:.
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xchg eax,ebx ;return pointer place
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ret
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;E:.
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.open_write:
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;B+ Open for write
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;B+ Reserve filename
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; p_filename -> w_file_name
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;pusha
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; mov eax, w_file_name
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; mov ebx, [p_filename]
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;.ncpy:
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; mov ch, byte [ebx]
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; cmp ch, 0
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; je .ecpy
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; mov [eax], ch
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; inc dword [eax]
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; inc dword [ebx]
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;jmp .ncpy
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;
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;.ecpy:
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;
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;popa
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mov [save_buffer_p], save_buffer_w
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mov esi,[p_filename]
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mov edi,[g_fileend]
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mov ecx,12
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cld
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rep movsb
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add [g_fileend],16
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;E:.
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pop ebx
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;B+ Fill file handle
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;save begin pointer
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xor eax,eax
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mov [ebx],eax
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;save file begin
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mov eax,[g_fileend]
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mov [ebx+4],eax
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;save file zone
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mov dword [ebx+8],save_buffer
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;reserve file zone
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add [g_fileend],save_buffer
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;save file mode
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mov eax,1 ;write
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mov [ebx+12],eax
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;E:.
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xchg eax,ebx ;return pointer place
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ret
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;E:.
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;E:.
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_OS_fclos:
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;B+ Close file
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;esp+4 - file handle
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;B+ Test write mode - save file
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mov eax,[esp+4]
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mov eax,[eax+12]
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cmp eax,1
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;E:.
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jne .no_write
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mov eax, [esp+4]
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mov ecx, [eax]
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mov ebx, [eax+8]
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mov ebx, [save_buffer_p]
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sub ebx, save_buffer_w
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; ebx = number of read bytes = file size
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; save loaded file
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mov [dest_info.bytes],ebx ; file size in bytes
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2008-02-17 18:56:13 +03:00
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2008-02-08 14:41:42 +03:00
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mov [dest_info.bytes+4], save_buffer_w
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;mov eax, [p_filename];[w_file_name]
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;mov [destination],eax
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mov eax,70
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mov ebx,dest_info
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mcall
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; check if 58 function failed
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test eax,eax
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je .ok_write
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add eax,7 ; error number += 7
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cmp eax,6+7
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jna .copy_error
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mov eax,7+7
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jmp .copy_error
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.copy_error:
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.ok_write:
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;E:.
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jmp .read
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.no_write:
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;B+ Test read mode - if no error end
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cmp eax,0
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je .read
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mov eax,BAD
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ret
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;E:.
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.read:
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;B+ Relace memory
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;find file size
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mov eax,[esp+4]
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mov ecx,[eax+8]
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add ecx,7
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and ecx,not 7
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push ecx
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;mov memory
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mov esi,[eax+4]
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mov edi,esi
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add esi,ecx
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mov ecx,[g_fileend]
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sub ecx,edi
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jz .is_last
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shr ecx,2
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inc ecx ;not neccessery
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cld
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rep movsd
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;update gl. memory
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.is_last:
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pop ecx
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sub dword [g_fileend],ecx
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;update file pointers
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mov edx,ecx
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mov ecx,[eax+4]
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mov eax,g_handle
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.new_handle1:
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mov ebx,[eax+4]
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cmp ebx,ecx
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jbe .no_update
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sub ebx,edx
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mov [eax+4],ebx
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.no_update:
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add eax,16
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cmp eax,g_handle+files*16
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jne .new_handle1
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;clear handle
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mov edi,[esp+4]
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xor eax,eax
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cld
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stosd
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stosd
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stosd
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stosd
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;E:.
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ret
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;E:.
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_OS_fgetc:
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;B+ Load char from file
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;esp+4 - input file
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mov eax,[esp+4]
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mov ebx,[eax]
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cmp ebx,[eax+8]
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je .eof
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inc dword [eax]
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add ebx,[eax+4]
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movzx eax,byte [ebx]
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ret
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.eof:
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mov eax,EOF
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ret
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;E:.
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;rrr db 'g',0
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_OS_fputc:
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;B+ Save char to file
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;esp+4 - output file
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;esp+8 - char to write
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;push dword '<'
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;mov cl,1
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;push dword 0
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;call test_outch
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;add esp,8
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;B+ Temp - write direct.
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cmp dword [esp+4],__iob
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jne .real_write0
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jmp _OS_exit
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.real_write0:
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|
|
|
cmp dword [esp+4],__iob+32
|
|
|
|
jne .real_write1
|
|
|
|
mov [print_textcolor],0x00ffff
|
|
|
|
jmp test_outch
|
|
|
|
.real_write1:
|
|
|
|
cmp dword [esp+4],__iob+64
|
|
|
|
jne .real_write2
|
|
|
|
mov [print_textcolor],0x77ffff
|
|
|
|
jmp test_outch
|
|
|
|
.real_write2:
|
|
|
|
;E:.
|
|
|
|
|
|
|
|
mov ebx,[save_buffer_p]
|
|
|
|
mov eax,[esp+8]
|
|
|
|
mov [ebx],eax
|
|
|
|
inc dword [save_buffer_p]
|
|
|
|
|
|
|
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
;push dword '<'
|
|
|
|
;mov cl,1
|
|
|
|
;push dword 0
|
|
|
|
;call test_outch
|
|
|
|
;add esp,8
|
|
|
|
|
|
|
|
mov eax,[esp+4]
|
|
|
|
mov ebx,[eax]
|
|
|
|
push ebx
|
|
|
|
cmp ebx,[eax+8]
|
|
|
|
jne .write_normal
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
;B+ Alloc save_buffer bytes
|
|
|
|
;mov memory
|
|
|
|
mov ebx,[esp+4+4]
|
|
|
|
mov esi,[g_fileend]
|
|
|
|
mov edi,esi
|
|
|
|
add edi,save_buffer-4
|
|
|
|
mov ecx,esi
|
|
|
|
sub ecx,[ebx+4]
|
|
|
|
sub ecx,[ebx+8]
|
|
|
|
shr ecx,2
|
|
|
|
jz .is_last
|
|
|
|
sub esi,4
|
|
|
|
std
|
|
|
|
rep movsd
|
|
|
|
.is_last:
|
|
|
|
|
|
|
|
;expand file size
|
|
|
|
add dword [eax+8],save_buffer
|
|
|
|
|
|
|
|
;update file pointers
|
|
|
|
mov ebx,g_handle
|
|
|
|
.new_handle:
|
|
|
|
mov ecx,[ebx+4]
|
|
|
|
cmp [eax+4],ecx
|
|
|
|
jae .no_update
|
|
|
|
add dword [ebx+4],save_buffer
|
|
|
|
.no_update:
|
|
|
|
add ebx,16
|
|
|
|
cmp ebx,g_handle+files*16-16
|
|
|
|
jne .new_handle
|
|
|
|
;E:.
|
|
|
|
|
|
|
|
.write_normal:
|
|
|
|
pop ebx
|
|
|
|
inc dword [eax]
|
|
|
|
add ebx,[eax+4]
|
|
|
|
mov cl,[esp+8]
|
|
|
|
mov byte [ebx],cl
|
|
|
|
|
|
|
|
;sub [test_outch.x_coord],2
|
|
|
|
;
|
|
|
|
;push dword '>'
|
|
|
|
;mov cl,1
|
|
|
|
;push dword 0
|
|
|
|
;call test_outch
|
|
|
|
;add esp,8
|
|
|
|
;
|
|
|
|
;sub [test_outch.x_coord],6
|
|
|
|
|
|
|
|
xor eax,eax
|
|
|
|
ret
|
|
|
|
;E:.
|
|
|
|
|
|
|
|
_OS_callo:
|
|
|
|
;B+ Alloc memory
|
|
|
|
;find all size
|
|
|
|
mov eax,[esp+4]
|
|
|
|
mov ebx,[esp+8]
|
|
|
|
mul ebx
|
|
|
|
push eax
|
|
|
|
|
|
|
|
;clear memory
|
|
|
|
mov edi,[.mem_p]
|
|
|
|
xor eax,eax
|
|
|
|
mov ecx,[esp]
|
|
|
|
cld
|
|
|
|
rep stosb
|
|
|
|
|
|
|
|
;update new memory pointer
|
|
|
|
pop ebx
|
|
|
|
push dword [.mem_p]
|
|
|
|
add ebx,7
|
|
|
|
and ebx,not 7
|
|
|
|
add [.mem_p],ebx
|
|
|
|
|
|
|
|
;return value
|
|
|
|
pop eax
|
|
|
|
ret
|
|
|
|
|
|
|
|
.mem_p dd mem_heap
|
|
|
|
;E:.
|
|
|
|
|
|
|
|
_OS_exit:
|
|
|
|
;B+ Exit program
|
|
|
|
; ;TMP
|
|
|
|
; mov eax,-1
|
|
|
|
; int 0x40
|
|
|
|
mov esp,[exit_esp]
|
|
|
|
sub esp,4
|
|
|
|
ret
|
|
|
|
;E:.
|
|
|
|
|
|
|
|
;E:.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
;B+ Test procedures
|
|
|
|
|
|
|
|
;B+ Definitions
|
|
|
|
LEFTMARGIN equ 11
|
|
|
|
BEGIN_CHARS equ 20
|
|
|
|
NL equ 10
|
|
|
|
;E:.
|
|
|
|
|
|
|
|
print_textcolor dd 0x00ffff
|
|
|
|
|
|
|
|
_file_beg:
|
|
|
|
;B+ Show begin of file - test fopen
|
|
|
|
;esp+4 - file handle (descriptor)
|
|
|
|
|
|
|
|
mov eax,[esp+4]
|
|
|
|
mov ebx,10 shl 16 + 30
|
|
|
|
mov ecx,[print_textcolor]
|
|
|
|
mov edx,[eax+4]
|
|
|
|
mov esi,BEGIN_CHARS
|
|
|
|
mov eax,4
|
|
|
|
int 0x40
|
|
|
|
ret
|
|
|
|
;E:.
|
|
|
|
|
|
|
|
_outstrg:
|
|
|
|
;B+ Draw black text - test function call
|
|
|
|
;esp+4*4 - x
|
|
|
|
;esp+4*3 - y
|
|
|
|
;esp+4*2 - *c
|
|
|
|
;esp+4*1 - len
|
|
|
|
|
|
|
|
mov ebx,[esp+4*4]
|
|
|
|
shl ebx,16
|
|
|
|
mov bx,[esp+4*3]
|
|
|
|
mov ecx,[print_textcolor]
|
|
|
|
mov edx,[esp+4*2]
|
|
|
|
mov esi,[esp+4]
|
|
|
|
mov eax,4
|
|
|
|
int 0x40
|
|
|
|
ret
|
|
|
|
;E:.
|
|
|
|
|
|
|
|
test_outch:
|
|
|
|
;B+ Draw one char - use as _OS_fputc, to test printf(...)
|
|
|
|
;esp+8 - char to write
|
|
|
|
|
|
|
|
;this is test! \b \r - not nesessary
|
|
|
|
|
|
|
|
mov al,[esp+8]
|
|
|
|
cmp al,NL
|
|
|
|
jne .no_newline
|
|
|
|
add [.y_coord],10
|
|
|
|
mov [.x_coord],LEFTMARGIN
|
|
|
|
ret
|
|
|
|
.no_newline:
|
|
|
|
|
|
|
|
mov ebx,[.x_coord]
|
|
|
|
shl ebx,16
|
|
|
|
mov bx,word [.y_coord]
|
|
|
|
mov ecx,[print_textcolor]
|
|
|
|
mov [.out_char],al
|
|
|
|
mov edx,.out_char
|
|
|
|
mov esi,1
|
|
|
|
mov eax,4
|
|
|
|
int 0x40
|
|
|
|
|
|
|
|
add [.x_coord],6
|
|
|
|
;mov eax,5
|
|
|
|
;mov ebx,5
|
|
|
|
;int 0x40
|
|
|
|
ret
|
|
|
|
|
|
|
|
.x_coord dd LEFTMARGIN
|
|
|
|
.y_coord dd 60
|
|
|
|
.out_char db 0
|
|
|
|
;E:.
|
|
|
|
|
|
|
|
;E:.
|
|
|
|
|
|
|
|
;B+ Data section
|
|
|
|
;B+ Memory managment
|
|
|
|
g_fileend dd g_handle+files*4*4 ;from 2MB+100*4*4
|
|
|
|
;w_buff dd
|
|
|
|
;E:.
|
|
|
|
|
|
|
|
save_buffer_p dd save_buffer_w
|
|
|
|
;B+ File parameters
|
|
|
|
file_parameters:
|
|
|
|
dd 0x0 ; mode
|
|
|
|
dd 0x0 ; first block
|
|
|
|
dd 1000 ; block read
|
|
|
|
dd -1 ; return place
|
|
|
|
dd fileinfo ; work area
|
|
|
|
filepath: times 100 db 0
|
|
|
|
|
|
|
|
file_mode dd 0 ;file mode
|
|
|
|
|
|
|
|
dest_info: ; DESTINATION FILEINFO
|
|
|
|
dd 2
|
|
|
|
dd 0
|
|
|
|
dd 0
|
|
|
|
.bytes dd ?
|
|
|
|
dd save_buffer
|
2008-02-17 18:56:13 +03:00
|
|
|
db 0
|
2008-02-08 14:41:42 +03:00
|
|
|
destination:
|
|
|
|
dd save_file_name
|
2008-02-17 18:56:13 +03:00
|
|
|
;db "EXAMPLE.ASM",0
|
|
|
|
|
2008-02-08 14:41:42 +03:00
|
|
|
|
|
|
|
|
|
|
|
w_file_name dd save_file_name
|
|
|
|
|
|
|
|
p_filename dd 0x0
|
|
|
|
;E:.
|
|
|
|
;E:.
|
|
|
|
|
|
|
|
;TO DO
|
|
|
|
mov eax,-1
|
|
|
|
int 0x40
|
|
|
|
;TO DO
|
|
|
|
|