#include <linux/kernel.h>
#include <linux/module.h>

MODULE_DESCRIPTION("Probe test");
MODULE_AUTHOR("Christian Hildner");
MODULE_LICENSE("GPL");

int init_module(void)
{
    unsigned long addr;
    unsigned long res;

    printk("init_module called ...\n");
    asm volatile ("\n\n"
        "movl %0=0xe000100000000000\n\n"
        ";;\n\n"
        "probe.r %1=%0,0\n\n"
        ";;\n\n"
        : "=r"(addr), "=r"(res)
        :);
    printk("init_module result 0x%016lx\n", res);
    printk("init_module done\n");
    return(0);
}

void cleanup_module(void)
{
    unsigned long addr;
    unsigned long res;

    printk("cleanup_module called ...\n");
    asm volatile ("\n\n"
        "rsm psr.i | psr.ic\n\n"
        "movl %0=0xe000100000000000\n\n"
        ";;\n\n"
        "srlz.i\n\n"
        ";;\n\n"
        "probe.r %1=%0,0\n\n"
        ";;\n\n"
        "ssm psr.ic\n\n"
        ";;\n\n"
        "srlz.d\n\n"
        "ssm psr.i\n\n"
        ";;\n\n"
        "srlz.i\n\n"
        ";;\n\n"
        : "=r"(addr), "=r"(res)
        :);
    printk("cleanup_module result 0x%016lx\n", res);
    printk("cleanup_module done\n");
    return;
}