287 lines
5.7 KiB
NASM
287 lines
5.7 KiB
NASM
include 'proc32.inc'
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format MS COFF
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public _http_init
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public _http_get@16
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public _http_receive@4
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public _http_free@4
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public _con_init@20
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public _con_exit@4
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public _con_get_flags
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public _con_set_flags@4
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public _con_cls
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public _con_write_asciiz@4
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section '.text' align 16
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;void* __fastcall getprocaddr(export, name)
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align 4
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getprocaddress:
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push esi
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push edi
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xor eax, eax
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test ecx, ecx ; If hlib = 0 then goto .end
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jz .end
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.next:
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cmp [ecx], dword 0 ; If end of export table then goto .end
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jz .end
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xor eax, eax
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mov esi, [ecx]
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mov edi, edx ; name
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.next_:
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lodsb
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scasb
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jne .fail
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or al, al
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jnz .next_
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jmp .ok
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.fail:
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add ecx, 8
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jmp .next
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.ok:
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mov eax, [ecx + 4] ; return address
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.end:
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pop edi
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pop esi
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ret
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;void fastcall dll_link(export, import)
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align 4
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dll_link:
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push esi
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push ecx
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mov esi, edx
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test esi, esi
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jz .done
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.next:
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mov edx, [esi]
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test edx, edx
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jz .done
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mov ecx, [esp]
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call getprocaddress
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test eax, eax
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jz .done
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mov [esi], eax
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add esi, 4
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jmp .next
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.done:
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pop ecx
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pop esi
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ret
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align 4
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dll_load:
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push ebp
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push esi
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push edi
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mov ebp, [esp+16]
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.next_lib:
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mov edx, [ebp]
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test edx, edx
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jz .exit
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mov esi, [ebp+4]
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mov edi, s_libdir.fname
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@@:
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lodsb
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stosb
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test al, al
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jnz @b
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mov eax, 68
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mov ebx, 19
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mov ecx, s_libdir
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int 0x40
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test eax, eax
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jz .fail
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mov ecx, eax
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call dll_link
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mov eax, [ecx]
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cmp dword[eax], 'lib_'
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jnz @f
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mov esi, [ecx+4]
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pushad
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mov eax, mem.Alloc
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mov ebx, mem.Free
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mov ecx, mem.ReAlloc
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mov edx, dll_load
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call esi
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popad
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@@:
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add ebp, 8
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jmp .next_lib
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.exit:
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pop edi
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pop esi
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pop ebp
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xor eax, eax
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ret 4
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.fail:
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pop edi
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pop esi
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pop ebx
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inc eax
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ret 4
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align 4
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_http_init:
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push ebx
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mov eax, 40
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mov ebx, 1 shl 8
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int 0x40
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pop ebx
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push @IMPORT
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call dll_load
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test eax, eax
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jnz .fail
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push 1
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call [con_start]
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xor eax, eax
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.fail:
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ret
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align 4
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_http_get@16:
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jmp [HTTP_get]
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align 4
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_http_receive@4:
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jmp [HTTP_receive]
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align 4
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_http_free@4:
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jmp [HTTP_free]
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align 4
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_con_init@20:
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jmp [con_init]
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align 4
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_con_exit@4:
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jmp [con_exit]
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align 4
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_con_write_asciiz@4:
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jmp [con_write_asciiz]
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_con_get_flags:
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_con_set_flags@4:
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_con_cls:
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ret
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proc mem.Alloc, size
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push ebx ecx
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mov ecx, [size]
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mov eax, 68
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mov ebx, 12
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int 0x40
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pop ecx ebx
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ret
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endp
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;-----------------------------------------------------------------------------
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proc mem.ReAlloc, mptr, size
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push ebx ecx edx
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mov ecx, [size]
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test ecx, ecx
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jz @f
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@@:
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mov edx, [mptr]
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test edx, edx
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jz @f
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@@:
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mov eax, 68
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mov ebx, 20
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int 0x40
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test eax, eax
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jz @f
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@@:
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pop edx ecx ebx
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ret
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endp
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;-----------------------------------------------------------------------------
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proc mem.Free, mptr
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push ebx ecx
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mov ecx,[mptr]
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test ecx,ecx
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jz @f
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@@:
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mov eax, 68
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mov ebx, 13
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int 0x40
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pop ecx ebx
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ret
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endp
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section '.data' align 16
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; -------------------------
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macro library [lname,fname]
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{
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forward
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dd __#lname#_library_table__,__#lname#_library_name__
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common
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dd 0
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forward
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align 4
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__#lname#_library_name__ db fname,0
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}
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macro import lname,[name,sname]
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{
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common
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align 4
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__#lname#_library_table__:
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forward
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if used name
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name dd __#name#_import_name__
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end if
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common
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dd 0
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forward
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if used name
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align 4
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__#name#_import_name__ db sname,0
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end if
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}
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align 4
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@IMPORT:
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library lib_http, 'http.obj', \
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console, 'console.obj'
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import lib_http, \
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HTTP_get, 'get', \
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HTTP_receive, 'receive', \
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HTTP_free, 'free'
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import console, \
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con_start, 'START', \
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con_init, 'con_init', \
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con_write_asciiz,'con_write_asciiz',\
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con_exit, 'con_exit', \
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con_gets, 'con_gets', \
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con_cls, 'con_cls', \
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con_getch2, 'con_getch2', \
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con_set_cursor_pos, 'con_set_cursor_pos',\
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con_write_string, 'con_write_string',\
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con_get_flags, 'con_get_flags', \
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con_set_flags, 'con_set_flags'
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s_libdir:
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db '/sys/lib/'
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.fname rb 32
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