Compile Assembly Output generated by VC++?
- by SDD
I have a simple hello world C program and compile it with /FA. As a consequence, the compiler also generates the corresponding assembly listing. Now I want to use masm/link to assemble an executable from the generated .asm listing.
The following command line yields 3 linker errors:
\masm32\bin\ml /I"C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\include" /c /coff asm_test.asm
\masm32\bin\link /SUBSYSTEM:CONSOLE /LIBPATH:"C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\lib" asm_test.obj
indicating that the C-runtime functions were not linked to the object files produced earlier:
asm_test.obj : error LNK2001:
unresolved external symbol
@__security_check_cookie@4
asm_test.obj : error LNK2001:
unresolved external symbol _printf
LINK : error LNK2001: unresolved
external symbol _wmainCRTStartup
asm_test.exe : fatal error LNK1120: 3
unresolved externals
Here is the generated assembly listing
; Listing generated by Microsoft (R) Optimizing Compiler Version 15.00.30729.01
TITLE c:\asm_test\asm_test\asm_test.cpp
.686P
.XMM
include listing.inc
.model flat
INCLUDELIB OLDNAMES
PUBLIC ??_C@_0O@OBPALAEI@hello?5world?$CB?6?$AA@ ; `string'
EXTRN @__security_check_cookie@4:PROC
EXTRN _printf:PROC
; COMDAT ??_C@_0O@OBPALAEI@hello?5world?$CB?6?$AA@
CONST SEGMENT
??_C@_0O@OBPALAEI@hello?5world?$CB?6?$AA@ DB 'hello world!', 0aH, 00H ; `string'
CONST ENDS
PUBLIC _wmain
; Function compile flags: /Ogtpy
; COMDAT _wmain
_TEXT SEGMENT
_argc$ = 8 ; size = 4
_argv$ = 12 ; size = 4
_wmain PROC ; COMDAT
; File c:\users\octon\desktop\asm_test\asm_test\asm_test.cpp
; Line 21
push OFFSET ??_C@_0O@OBPALAEI@hello?5world?$CB?6?$AA@
call _printf
add esp, 4
; Line 22
xor eax, eax
; Line 23
ret 0
_wmain ENDP
_TEXT ENDS
END
I am using the latest masm32 version (6.14.8444).
