107 lines
2.4 KiB
NASM
107 lines
2.4 KiB
NASM
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use32
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db 'MENUET01'
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dd 1
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dd start
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dd i_end
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dd mem
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dd mem
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dd 0
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dd 0
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REQ_DLL_VER = 2
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DLL_ENTRY = 1
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start:
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; First 3 steps are intended to load/init console DLL
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; and are identical for all console programs
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; load DLL
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mov eax, 68
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mov ebx, 19
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mov ecx, dll_name
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int 0x40
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test eax, eax
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jz exit
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; initialize import
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mov edx, eax
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mov esi, myimport
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import_loop:
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lodsd
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test eax, eax
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jz import_done
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push edx
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import_find:
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mov ebx, [edx]
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test ebx, ebx
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jz exit;import_not_found
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push eax
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@@:
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mov cl, [eax]
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cmp cl, [ebx]
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jnz import_find_next
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test cl, cl
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jz import_found
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inc eax
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inc ebx
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jmp @b
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import_find_next:
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pop eax
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add edx, 8
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jmp import_find
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import_found:
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pop eax
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mov eax, [edx+4]
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mov [esi-4], eax
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pop edx
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jmp import_loop
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import_done:
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; check version
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cmp word [dll_ver], REQ_DLL_VER
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jb exit
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cmp word [dll_ver+2], REQ_DLL_VER
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ja exit
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push DLL_ENTRY
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call [dll_start]
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; yes! Now do some work (say helloworld in this case).
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push caption
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push -1
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push -1
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push -1
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push -1
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call [con_init]
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push aHelloWorld
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call [con_write_asciiz]
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push 0
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call [con_exit]
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exit:
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or eax, -1
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int 0x40
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dll_name db '/sys/lib/console.obj',0
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caption db 'Console test',0
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aHelloWorld db 'Hello, World!',10,0
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align 4
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myimport:
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dll_start dd aStart
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dll_ver dd aVersion
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con_init dd aConInit
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con_write_asciiz dd aConWriteAsciiz
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con_exit dd aConExit
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dd 0
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aStart db 'START',0
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aVersion db 'version',0
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aConInit db 'con_init',0
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aConWriteAsciiz db 'con_write_asciiz',0
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aConExit db 'con_exit',0
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i_end:
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align 4
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rb 2048 ; stack
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mem:
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