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31 lines
972 B
C
31 lines
972 B
C
/* Copyright (C) 2021,2022 fef <owo@fef.moe>. All rights reserved. */
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#pragma once
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#ifndef _ARCH_INTERRUPT_H_
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#error "This file is not meant to be included directly, use <arch/interrupt.h>"
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#endif
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/*
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* XXX it's probably not necessary to declare this struct __packed and add
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* paddings for the cs and ss members manually, because all members *should*
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* get aligned to 8 bytes automatically. I'm absolutely not in the mood for
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* verifying this right now tho, so we're playing it safe.
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*/
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/**
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* @brief A hardware stack frame on amd64.
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* I have no idea whether x86 people are actually calling it hardware stack
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* frame tbh, this is just the (ARM) terminology i'm used to. Either way,
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* this is what gets pushed to the stack automatically when entering an ISR.
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*/
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struct amd64_hw_frame {
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u64 rip;
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u16 cs; u16 _pad0; u32 _pad1;
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u64 rflags;
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/* unlike on i386, the amd64 *always* pushes %rsp and %ss */
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u64 rsp;
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u16 ss; u16 _pad2; u32 _pad3;
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} __packed;
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