Hello all,
I see that grub setups registers before jump to linux kernel at
grub/grub-core/loader/i386/pc/linux.c:
grub_linux16_boot (void)
{
...
state.gs = state.fs = state.es = state.Tds = state.ss = segment;
state.sp = GRUB_LINUX_SETUP_STACK;
state.cs = segment + 0x20;
state.ip = 0;
...
}
I see in gdb that: ss, ds, and other segment registers are 0x1000, and
cs is 0x1020. It is good. But why esp is 0xf7f4? I see that
GRUB_LINUX_SETUP_STACK is 0x9000.
Thank you.
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