BCC - produce assembly file from C/C++ code, those, who are new in assembly, but have already any C skill, may use -S switch to produce assembly file from C/C++ code.

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shoorick

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those, who are new in assembly, but have already any C skill, may use -S switch to produce assembly file from c(++) code.

then this obvious code:

CODE

#include <windows.h>

int WINAPI
WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPSTR lpCmdLine, int nCmdShow)
{
MessageBox(NULL, "Hello World! This is my first win32 program!",
"Lesson1", MB_OK);

return 0;
}

will be transformed into this:

CODE

.686p
ifdef ??version
if ??version GT 500H
.mmx
endif
endif
model flat
ifndef ??version
?debug macro
endm
endif
?debug S "msgbox.cpp"
?debug T "msgbox.cpp"
_TEXT segment dword public use32 'CODE'
_TEXT ends
_DATA segment dword public use32 'DATA'
_DATA ends
_BSS segment dword public use32 'BSS'
_BSS ends
DGROUP group _BSS,_DATA
_TEXT segment dword public use32 'CODE'
WinMain segment virtual
@WinMain proc near
?live16385@0:
;
; WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPSTR lpCmdLine, int nCmdShow)
;
push ebp
mov ebp,esp
;
; {
; MessageBox(NULL, "Hello World! This is my first win32 program!",
;
@1:
push 0
push offset s@+45
push offset s@
push 0
call @MessageBoxA
;
; "Lesson1", MB_OK);
;
; return 0;
;
xor eax,eax
;
; }
;
@3:
@2:
pop ebp
ret 16
@WinMain endp
WinMain ends
_TEXT ends
_DATA segment dword public use32 'DATA'
s@ label byte
; s@+0:
db "Hello World! This is my first win32 program!",0
; s@+45:
db "Lesson1",0
align 4
_DATA ends
_TEXT segment dword public use32 'CODE'
_TEXT ends
@MessageBoxA equ MessageBoxA
extrn MessageBoxA:near
...
?debug D "msgbox.cpp" 14694 15826
end

Read here how to use bcc from WinAsm Studio.

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