108 lines
1.5 KiB
Plaintext
108 lines
1.5 KiB
Plaintext
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extrn malloc
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extrn getenv
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extrn fopen
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extrn fclose
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extrn fread
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extrn fwrite
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extrn fseek
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extrn ftell
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extrn time
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extrn exit
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extrn 'free' as libc_free
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extrn 'write' as libc_write
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alloc:
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ccall malloc,eax
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test eax,eax
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jz allocation_failed
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clc
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ret
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allocation_failed:
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stc
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ret
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free:
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ccall libc_free,eax
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ret
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display_string:
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lodsb
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or al,al
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jz string_displayed
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mov dl,al
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call display_character
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jmp display_string
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string_displayed:
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ret
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display_character:
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mov [character],dl
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ccall libc_write,[display_handle],character,1
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ret
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open:
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push esi edi ebp
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call adapt_path
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ccall fopen,buffer,open_mode
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pop ebp edi esi
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or eax,eax
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jz file_error
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mov ebx,eax
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clc
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ret
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adapt_path:
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mov esi,edx
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mov edi,buffer
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copy_path:
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lods byte [esi]
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cmp al,'\'
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jne path_char_ok
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mov al,'/'
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path_char_ok:
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stos byte [edi]
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or al,al
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jnz copy_path
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cmp edi,buffer+1000h
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ja not_enough_memory
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ret
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create:
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push esi edi ebp
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call adapt_path
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ccall fopen,buffer,create_mode
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pop ebp edi esi
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or eax,eax
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jz file_error
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mov ebx,eax
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clc
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ret
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close:
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ccall fclose,ebx
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ret
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read:
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push ebx ecx edx esi edi
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ccall fread,edx,1,ecx,ebx
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pop edi esi edx ecx ebx
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cmp eax,ecx
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jne file_error
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clc
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ret
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file_error:
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stc
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ret
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write:
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push ebx ecx edx esi edi
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ccall fwrite,edx,1,ecx,ebx
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pop edi esi edx ecx ebx
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cmp eax,ecx
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jne file_error
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clc
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ret
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lseek:
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push ebx
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movzx eax,al
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ccall fseek,ebx,edx,eax
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mov ebx,[esp]
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ccall ftell,ebx
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pop ebx
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ret
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open_mode db 'r',0
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create_mode db 'w',0
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