如何在C中的STM32 QEMU调试器eclipse上从RAM存储器执行功能？

Question

I'am using the STM32 QEMU debugger to test the code. I'm erase the while(1) because I just test the function.

typedef int(*fnc_t) (int);

int multiply(int data) {
    return (data * 5);
}

void memorycopy( unsigned char *src, unsigned char *dst, int size ) {
    int j;
    for( j=0; j < size; j++ ) {
        dst[j] = src[j];
    }
}

int main(int argc, char* argv[])
{
    int i = 0;
    unsigned int ram_vector[6];
    fnc_t fnc_ram;

    printf("1\n");
    fnc_ram = (fnc_t) ( (int) &ram_vector + 1);
    printf("2\n");

    volatile int z = (int)( &multiply - 1);

    memorycopy( (unsigned char*) z, (unsigned char*) fnc_ram, 6);

    printf("3\n");
    i = fnc_ram(3);
    printf("4\n");
    printf("Novo i: %d\n",i);
    printf("5\n");
}

But when I call the function i = fnc_ram(3); the follow error occurs:

Answer 1

You're not copying enough bytes. Your memorycopy function only copys 6 bytes and you want 6 integers don't you?