I'm here to ask you some stuff about VS2017.
In the past I had used WinAsm for MASM and I never got problems with it.
However, when I'm trying to do something with MASM in VS2017, I always gonna get problems and stuff...
I've checked the whole internet about "how to set up VS for MASM", but nothing has helped me as I'm always getting troubles...
Is there any way to use Visual Studio 2017 for MASM32/64bit without any kind of headache?
Can someone give me the ultimate guide to set up VS2017 for assembly programming?
Thanks you very much and sorry for my weak english.
The Visual Studio project system supports assembler-language files built by using MASM in your C++ projects. MASM fully supports x64 assembler-language source files, and builds them into object files. You can then link these object files to your C++ code built for x64 targets.
asm, add the other file to the project by choosing "Add Files to Project" from the Project menu, or choose "Add Files" when right-clicking in the project window. There's no need to do anything to the linker script. Whether your main code (presumably in main. asm) is able to call the functions defined in func.
How to build a x64/x86-project with a standalone x64/x86 assembly file
1) Start Visual Studio (Community) 2017 and choose FILE - New - Project
.
2) In the next window choose Empty Project
.
3) Make sure, that the project is highlighted in the Solution Explorer and and choose PROJECT - Build Customizations...
.
4) In the next window tick masm(.targets,.props)
and click on OK
.
5) Choose PROJECT - Add New Item
from the menu.
6) In the next window choose C++File(.cpp)
and - IMPORTANT! - give it a name with an .asm
extension. Click on Add
.
7) Now you can fill the file with content.
Source.asm:
EXTERN GetStdHandle : PROC
EXTERN WriteFile : PROC
EXTERN ExitProcess : PROC
.DATA?
hFile QWORD ?
BytesWritten DWORD ?
.DATA
hello BYTE 'Hello world!', 13, 10
.CODE
main PROC
; https://blogs.msdn.microsoft.com/oldnewthing/20160623-00/?p=93735
sub rsp, 40 ; Shadow space (4 * 8) & 1 parameter (8 bytes)
; https://learn.microsoft.com/en-us/cpp/build/stack-allocation
and spl, -16 ; Align to 16
; https://msdn.microsoft.com/library/windows/desktop/ms683231.aspx
mov ecx, -11 ; DWORD nStdHandle = STD_OUTPUT_HANDLE
call GetStdHandle ; Call WinApi
mov hFile, rax ; Save returned handle
; https://msdn.microsoft.com/library/windows/desktop/aa365747.aspx
mov rcx, hFile ; HANDLE hFile (here: Stdout)
lea rdx, hello ; LPCVOID lpBuffer
lea r9, BytesWritten ; LPDWORD lpNumberOfBytesWritten
mov r8d, LENGTHOF hello ; DWORD nNumberOfBytesToWrite
mov qword ptr [rsp+32], 0 ; LPOVERLAPPED lpOverlapped = NULL
call WriteFile ; Call WinAPI
exit:
; https://msdn.microsoft.com/library/windows/desktop/ms682658.aspx
xor ecx, ecx ; Set RCX to null for return value
call ExitProcess ; Call WinAPI to exit
main ENDP
end
This is a 64-bit Console application that starts at the procedure main
.
8) Change the Solution Platforms
to x64
9) Choose PROJECT - Properties
.
10) In the Properties window you have to complete two linker options:
Choose at the left side Configuration Properties - Linker - All Options
, change both options at once and click OK
.
11) Build and run the .exe with CTRL-F5. The application will be opened in a new window.
Now overwrite Source.asm
with a 32-bit Console application:
.MODEL flat, stdcall
; https://learn.microsoft.com/en-us/cpp/assembler/masm/proto
GetStdHandle PROTO STDCALL, ; https://learn.microsoft.com/en-us/windows/console/getstdhandle
nStdHandle: SDWORD
WriteFile PROTO STDCALL, ; https://learn.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-writefile
hFile: DWORD, ; output handle
lpBuffer: PTR BYTE, ; pointer to buffer
nNumberOfBytesToWrite: DWORD, ; size of buffer
lpNumberOfBytesWritten: PTR DWORD, ; num bytes written
lpOverlapped: PTR DWORD ; ptr to asynchronous info
ExitProcess PROTO STDCALL, ; https://learn.microsoft.com/en-us/windows/desktop/api/processthreadsapi/nf-processthreadsapi-exitprocess
dwExitCode: DWORD ; return code
.DATA ; https://learn.microsoft.com/en-us/cpp/assembler/masm/dot-data
Hallo db "Hello world!",13,10
.DATA? ; https://learn.microsoft.com/en-us/cpp/assembler/masm/dot-data-q
lpNrOfChars dd ?
.CODE ; https://learn.microsoft.com/en-us/cpp/assembler/masm/dot-code
main PROC ; learn.microsoft.com/en-us/cpp/assembler/masm/proc
invoke GetStdHandle, -11 ; -> StdOut-Handle into EAX
invoke WriteFile, eax, OFFSET Hallo, LENGTHOF Hallo, OFFSET lpNrOfChars, 0
invoke ExitProcess, 0
main ENDP
END main ; https://learn.microsoft.com/en-us/cpp/assembler/masm/end-masm
Change the Solution Platforms
to x86
(No. 8 above) and complete the project properties with SubSystem: Console (/SUBSYSTEM:CONSOLE)
(No. 10 above). You must not set the Entry point, because ml32 expects the entry point after the END
directive (END main
). Build and run the .exe with CTRL-F5.
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