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 x30mov x0, #0mov x1, #1bl addmov x1, x0   // x0 return ldp  x29, x30, [sp], 16  //restore fp lrret

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