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 Post subject: Another quick question about iretd
PostPosted: Fri Oct 02, 2020 10:39 pm 
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Joined: Tue Jul 14, 2020 4:01 am
Posts: 60
What is the
Code:
pop
order of iretd?


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 Post subject: Re: Another quick question about iretd
PostPosted: Fri Oct 02, 2020 10:44 pm 
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Joined: Mon Feb 02, 2015 7:11 pm
Posts: 670
ia32:
Code:
struct InterruptContext
{
    ...
    // iret frame
    uint32_t eip;
    uint32_t cs;
    uint32_t eflags;
    // These are only saved/restored when crossing privilege levels
    uint32_t esp;
    uint32_t ss;
};

x86_64:
Code:
struct InterruptContext
{
    ...
    // iret frame
    uint64_t rip;
    uint64_t cs;
    uint64_t rflags;
    // These are always valid (different behaviour than 32 bits mode)
    uint64_t rsp;
    uint64_t ss;
};

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