21 lines
715 B
C++
21 lines
715 B
C++
#include <base.hpp>
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#include <gdt.hpp>
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#include <serial.hpp>
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namespace MTGosHAL {
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GDT::GDT() {
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gdt[0]=gdt[1]=gdt[2]=gdt[3]=gdt[4]=gdt[5]=gdt[6]=0x0ull;
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}
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auto GDT::setEntry(int i, unsigned int base, unsigned int limit, int flags) -> void {
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gdt[i] = limit & 0xffffLL;
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gdt[i] |= (base & 0xffffffLL) << 16;
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gdt[i] |= (flags & 0xffLL) << 40;
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gdt[i] |= ((limit >> 16) & 0xfLL) << 48;
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gdt[i] |= ((flags >> 8 )& 0xffLL) << 52;
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gdt[i] |= ((base >> 24) & 0xffLL) << 56;
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}
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auto GDT::apply() -> void {
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debug << "We are now trying to set our GDT. If the CPU triplefaults, something went wrong in MTGosHAL::GDT::apply() or loadGDT().\n";
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fin={(uint16_t)7*8-1, (void*)gdt};
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loadGDT((void*)(&fin));
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};
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}
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