Linking assembly and C

Hi everybody;
I have a C code and assembly (nasm) code and I am not able to find how to link them each other. Here are the codes :
NASM side:

Code:

global	_maxofthree
	
	section .text
_maxofthree:
	mov	eax, [esp+4]
	mov	ecx, [esp+8]
	mov	edx, [esp+12]
	cmp	eax, ecx
	cmovl	eax, ecx
	cmp	eax, edx
	cmovl	eax, edx
	ret

C Side:

Code:

int maxofthree(int , int , int );

#include <stdio.h>

int main() {

    printf("%d\n", maxofthree(1, -4, -7));
    printf("%d\n", maxofthree(2, -6, 1));
    printf("%d\n", maxofthree(2, 3, 1));
    printf("%d\n", maxofthree(-2, 4, 3));
    printf("%d\n", maxofthree(2, -6, 5));
    printf("%d\n", maxofthree(2, 4, 6));
    return 0;
}

Any help is greatly appreciate.

 

nasm <assembly>.s -o asm.o
gcc <cfile>.c -c -o cfile.o
ld cfile.o asm.o -lgcc -lc -lm -o output

 

Oh and for portability sake, cmov should be replaced my a mov/jmp/cmp construct.

 

It is a lot easier if you let gcc invoke the linker for you.

Code:

nasm -felf32 asm_name.asm
gcc -m32 c_name.c asm_name.o -o program_name

If you are running 32 bit Linux, the -m32 is not needed (but it shouldn't do any harm).

If you are running 64 bit Linux, the -m32 is needed and various 32 bit support files might need to be installed before it will work.

 

Thank you everybody!
thanks a lot!