Can't pass parameter from C to Assembly code -

Can't pass parameter from C to Assembly code -

from understand, when parameter passed in function phone call in c, callee can find first parameter @ [ebp+8]. returning value through eax works me, reading right parameter value stack doesn't.

right i'm trying write assembly function, can called c , returns same value, beingness passed.

when run next program, prints number: 1 console, no matter value passed myfunc. doing wrong?

assembly.s

section .text global _myfunc _myfunc: mov eax, [ebp+8] ret

main.c

#include <stdio.h> extern unsigned int myfunc(unsigned int somedata); int main() { unsigned int = myfunc(6); printf("number: %i\n",i); homecoming 0; }

i'm using mac, nasm assemble code , gcc c compilation.

makefile

macho32: nasm -f macho32 assembly.s gcc -m32 -o macho32 assembly.o main.c

you refer argument on stack, reading [ebp+offset] - has ebp been set point @ stack? if no, may have first, conventionally done by:

push ebp mov ebp,esp

only points ebp stacked previous contents, below stacked homecoming address, , below passed arguments.

c assembly nasm