how to use a library in masm or more specifcally a .lib file?

Question

I have made a .lib file using visual studio 2010 and now I want to use it in masm. How can I do that? need help. I tried to look it on the internet but couldn't find any precise answer on how to do this.

here is the link to .lib file that I created using Visual C++ 2010. https://www.dropbox.com/s/pzdd35ktolfl48x/MathFuncsLib.lib

This file contains only a function that takes two integers as arguments and returns their sum. I need to use this function in one of my program written in intel assembly using masm.

Need help in this problem.

Answer 1

I was too optimistic saying that there are many examples for a MASM-C-combination in the net. Here a step-by-step instruction for Visual Studio Express 2010 (no Masm32):

MathFuncsLib.cpp:

extern "C" {
    int Addition (int a, int b) { return a + b; }
    int Subtraction (int a, int b) { return a - b; }
    int Multiplication (int a, int b) { return a * b; }
    int Division (int a, int b) { return a / b; }
} // end of extern "C"

MathFuncsLib.asm:

.MODEL flat, stdcall

includelib kernel32.lib
ExitProcess PROTO STDCALL, :DWORD

includelib msvcrt.lib
printf PROTO C, :VARARG

includelib MathFuncsLib.lib
Addition PROTO C, :SDWORD, :SDWORD
Subtraction PROTO C, :SDWORD, :SDWORD
Multiplication PROTO C, :SDWORD, :SDWORD
Division PROTO C, :SDWORD, :SDWORD

.data
    arg1 SDWORD 100
    arg2 SDWORD 10
    result SDWORD ?

    fmt1 db "Addition: %u",10,0
    fmt2 db "Subtraction: %u",10,0
    fmt3 db "Multiplication: %u",10,0
    fmt4 db "Division: %u",10,0

.code
main PROC

    invoke Addition, arg1, arg2
    mov result, eax
    invoke printf, ADDR fmt1, result        ; printf (fmt1,result)

    invoke Subtraction, arg1, arg2
    mov result, eax
    invoke printf, ADDR fmt2, result

    invoke Multiplication, arg1, arg2
    mov result, eax
    invoke printf, ADDR fmt3, result

    invoke Division, arg1, arg2
    mov result, eax
    invoke printf, ADDR fmt4, result

    invoke ExitProcess, 0

main ENDP

END main

MathFuncsLib.cmd:

@ECHO OFF
call "C:\Compiler\Visual Studio Express 2010\VC\vcvarsall.bat"
rem Adapt it with path to your 'vcvarsall.bat'

cl.exe MathFuncsLib.cpp /c
lib.exe MathFuncsLib.obj
ml.exe MathFuncsLib.asm /link /subsystem:console

MathFuncslib.exe

Good luck!