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8f529046a9
I'm a tabs guy. I like tabs, it's an elegant way to represent indentation instead of brute-forcing it. But I have to admit that the world seems to be going towards spaces, and tooling tends not to play nice with tabs. So here we go, changing the whole repo to spaces since I'm getting tired of all the inconsistent formatting.
40 lines
1.0 KiB
C++
40 lines
1.0 KiB
C++
#pragma once
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/// \file tss.h
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/// Definitions relating to the TSS
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#include <stdint.h>
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/// The 64bit TSS table
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class TSS
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{
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public:
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TSS();
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/// Get the currently running CPU's TSS.
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static TSS & current();
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/// Ring stack accessor. Returns a mutable reference.
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/// \arg ring Which ring (0-3) to get the stack for
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/// \returns A mutable reference to the stack pointer
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uintptr_t & ring_stack(unsigned ring);
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/// IST stack accessor. Returns a mutable reference.
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/// \arg ist Which IST entry (1-7) to get the stack for
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/// \returns A mutable reference to the stack pointer
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uintptr_t & ist_stack(unsigned ist);
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/// Allocate new stacks for the given IST entries.
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/// \arg ist_entries A bitmap of used IST entries
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void create_ist_stacks(uint8_t ist_entries);
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private:
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uint32_t m_reserved0;
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uintptr_t m_rsp[3]; // stack pointers for CPL 0-2
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uintptr_t m_ist[8]; // ist[0] is reserved
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uint64_t m_reserved1;
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uint16_t m_reserved2;
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uint16_t m_iomap_offset;
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} __attribute__ ((packed));
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