Playing around with masm proto and proc directives and I encounted this linker error, not much info available on msdn regarding linker error codes
heres a look at the code
include c:\masm32\include\masm32rt.inc
include c:\masm32\include\msvcrt.inc
includelib c:\masm32\lib\msvcrt.lib
mainproc proto dummy:DWORD
.data
keys dd 00444d51h,00003657h,0000384Ah,00003244h
dd 00003453h,00003542h,00324D47h,00005751h
dd 0000304Eh,00004A48h,00003744h,00003445h
dd 00384438h,00005042h,00375155h,00005245h
dd 00364A46h,00005A4Ch,00315344h,00003754h
dd 00003058h,00304A4Bh,0000504Fh,0000304Ch
dd 00005150h,00004A44h,00004356h,00004237h
dd 00005953h,0000514Ch,00003132h,00005436h
dd 0000444Eh,0000494Bh,00003930h,00005452h
dd 00005245h,00364A46h,00005A4Ch,00315344h
dd 00003754h,00003058h,00304A4Bh,0000504Fh
dd 0000504Fh,0000304Ch,00005150h,00444D51h
dd 00003657h,0000384Ah,00003244h,00003453h
dd 00003542h,00324D47h,00005751h,0000304Eh
dd 00004A48h,00004352h,00315953h,0033514Ch
dd 00003132h,00005436h,0000444Eh,0000494Bh
user db 32 dup(?)
alpha db "abcdefghijklmnopqrstuvwxyz123456789-0. ABCDEFGHIJKLMNOPQRSTUVWXYZ!^",0
greet db "Enter Username: ",0
inproc db "in proc"
scan db "%31s",0
.code
start:
invoke crt_printf, addr greet
invoke crt_scanf, addr scan , addr user
invoke mainproc, addr user
xor eax,eax
invoke crt_exit, eax
end start
mainproc proc dummy:DWORD
crt_printf, addr dummy
ret
local my:DWORD
mainproc endp
end
Don't know where I went wrong when creating the proc and proto stuff, a heads up would be apprechiated
Microsoft (R) Macro Assembler Version 6.14.8444
Copyright (C) Microsoft Corp 1981-1997. All rights reserved.
Assembling: C:\Users\cornelius\Documents\ASM\c1.asm
Microsoft (R) Incremental Linker Version 5.12.8078
Copyright (C) Microsoft Corp 1992-1998. All rights reserved.
c1.obj : error LNK2001: unresolved external symbol _mainproc@4
c1.exe : fatal error LNK1120: 1 unresolved externals
_
Link error
Press any key to continue . . .
Quotemainproc proto dummy:DWORD
try this...
mainproc proto :DWORD
also, i usually specify the entry point in the END directive
end start
Dave is right here, you must tell the assembler the start and end of the code. Name can be anything you like but commonly the pair "start:" and "end start" is what is used.
This line "local my:DWORD" will generate an error, in MASM you always place LOCAL variables at the start of the proc.
Thanks that definitely helped alot, I'll make a note about that
This line :
crt_printf, addr dummy
should be
invoke crt_printf, addr dummy
This builds, I don't know what its supposed to do but it builds with no errors.
; -----------------------------------------------
include \masm32\include\masm32rt.inc
mainproc proto :DWORD
.data
align 4
keys dd 00444d51h,00003657h,0000384Ah,00003244h
dd 00003453h,00003542h,00324D47h,00005751h
dd 0000304Eh,00004A48h,00003744h,00003445h
dd 00384438h,00005042h,00375155h,00005245h
dd 00364A46h,00005A4Ch,00315344h,00003754h
dd 00003058h,00304A4Bh,0000504Fh,0000304Ch
dd 00005150h,00004A44h,00004356h,00004237h
dd 00005953h,0000514Ch,00003132h,00005436h
dd 0000444Eh,0000494Bh,00003930h,00005452h
dd 00005245h,00364A46h,00005A4Ch,00315344h
dd 00003754h,00003058h,00304A4Bh,0000504Fh
dd 0000504Fh,0000304Ch,00005150h,00444D51h
dd 00003657h,0000384Ah,00003244h,00003453h
dd 00003542h,00324D47h,00005751h,0000304Eh
dd 00004A48h,00004352h,00315953h,0033514Ch
dd 00003132h,00005436h,0000444Eh,0000494Bh
user db 32 dup(?)
alpha db "abcdefghijklmnopqrstuvwxyz123456789-0. ABCDEFGHIJKLMNOPQRSTUVWXYZ!^",0
greet db "Enter Username: ",0
inproc db "in proc"
scan db "%31s",0
.code
; -----------------------------------------------
start:
invoke crt_printf, OFFSET greet
invoke crt_scanf, addr scan , addr user
invoke mainproc, addr user
xor eax,eax
invoke crt_exit, eax
; -----------------------------------------------
mainproc proc arg1:DWORD
LOCAL my:DWORD
invoke crt_printf, arg1
ret
mainproc endp
; -----------------------------------------------
end start