This is my attempt at writing my first procedure.
Compiler did one of those ASSUME errors.
Andy
.code
start:
call Custom
invoke ExitProcess,0
;Custom I.D.P. api ??
Custom proc
PUSH EBP
MOV EBP,ESP
PUSH ECX
PUSH EAX
PUSH ECX
MOV EAX,DWORD PTR FS:[18]
MOV EAX,DWORD PTR DS:[EAX+30]
MOV ECX,DWORD PTR DS:[EAX]
MOV DWORD PTR SS:[EBP-4],ECX
POP ECX
POP EAX
MOV EAX,DWORD PTR SS:[EBP-4]
SHR EAX,10
AND EAX,1
MOV ESP,EBP
POP EBP
RETN
Custom endp
end start
use the ASSUME directive to remove the error:
assume fs:nothing
...Also, when using PROC/ENDP the stack frame is automatically created.
Quote from: Magnum on December 07, 2012, 01:08:21 PM
Compiler did one of those ASSUME errors.
Assembler != Compiler ;-)
it is automatically created if you have PROC line parameters or LOCAL variables
also - you don't want to use RETN if it does - just RET
in this case, you may be better off to create your own stack frame, as you are
you can put several registers in one ASSUME
ASSUME FS:Nothing, DS:Nothing, SS:Nothing