arm 汇编调用C

arm64 汇编调用C函数

main.s

.section .text
.globl main
main:
        stp     x29, x30, [sp, -16]!  //store fp x29 lr x30

        mov x0, #0
        mov x1, #1
        bl add
		mov x1, x0   // x0 return 
        ldp  x29, x30, [sp], 16  //restore fp lr
        ret

add.c

#include <stdio.h>
int add(int a, int b)
{
    printf("a=%d,b=%d\n",a,b);
    return a+b;
}

编译

gcc -g main.s add.c

调试

gdb a.out
b main