On 25/06/20 20:59, Nadav Amit wrote:
> I think that there is a hidden assumption about the IDT location in
> realmode’s test_int(), which this would break:
>
> static void test_int(void)
> {
> init_inregs(NULL);
>
> boot_idt[11] = 0x1000; /* Store a pointer to address 0x1000 in IDT entry 0x11 */
> *(u8 *)(0x1000) = 0xcf; /* 0x1000 contains an IRET instruction */
>
> MK_INSN(int11, "int $0x11\n\t");
>
> exec_in_big_real_mode(&insn_int11);
> report("int 1", 0, 1);
> }
Uuuuuuuuuuuuuuuumph... you're right. :( Will send a patch tomorrow.
Paolo
