I try calling asm from a C program
Here is my code:
// Template C to x86 call
#include <stdio.h>
#include <stdlib.h>
#include <windows.h>
extern void asmhello();
int main(int argc, char* argv[]) {
asmhello();
return 0;
}
Here is my asm code:
; assembly part using x86-64
section .data
msg db "Hello World",13,10,0
section .text
bits 64
default rel ; to handle address relocation
global asmhello
extern printf
asmhello:
sub rsp, 8*5 ; caller
mov rcx, msg1
call printf
add rsp, 8*5
ret
I try running it in VS 2022
the error says..
LNK2019 unresolved external symbol asmhello referenced in function main
The error also says
function definition for 'asmhello' not found.
