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42 lines
1.2 KiB
C
42 lines
1.2 KiB
C
/* See the end of this file for copyright and license terms. */
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#pragma once
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#ifndef _ARCH_SCHED_H_
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#error "This file is not meant to be included directly, use <arch/page.h>"
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#endif
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/**
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* @brief In-kernel context save for the x86.
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* This precise structure layout is hardcoded in assembly, so don't forget to
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* update `arch/x86/sys/switch.S` if you need to change it for whatever reason.
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*/
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struct x86_context {
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/**
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* The register itself is %esp, which points to the %eip that was pushed
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* by the function calling `arch_switch_to()` as per the x86 SysV ABI
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*/
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union {
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register_t esp;
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register_t *eip;
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};
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register_t esi;
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register_t edi;
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register_t ebx;
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register_t ebp;
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} __packed;
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/*
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* This file is part of GayBSD.
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* Copyright (c) 2021 fef <owo@fef.moe>.
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*
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* GayBSD is nonviolent software: you may only use, redistribute, and/or
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* modify it under the terms of the Cooperative Nonviolent Public License
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* (CNPL) as found in the LICENSE file in the source code root directory
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* or at <https://git.pixie.town/thufie/npl-builder>; either version 7
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* of the license, or (at your option) any later version.
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*
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* GayBSD comes with ABSOLUTELY NO WARRANTY, to the extent
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* permitted by applicable law. See the CNPL for details.
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*/
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