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24 lines
554 B
C++
24 lines
554 B
C++
#include <syscalls.hpp>
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#include <cpu.hpp>
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#include "cpu/gdt.hpp"
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using namespace CPU::x64;
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extern "C" __attribute__((naked, used, no_stack_protector)) void SystemCallHandlerStub()
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{
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asmv(".loop\n"
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"jmp .loop\n");
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}
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extern "C" uint64_t SystemCallsHandler(SyscallsRegs *regs);
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void InitializeSystemCalls()
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{
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wrmsr(MSR_EFER, rdmsr(MSR_EFER) | 1);
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wrmsr(MSR_STAR, ((uint64_t)(GDT_KERNEL_CODE) << 32) | ((uint64_t)(GDT_KERNEL_DATA | 3) << 48));
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wrmsr(MSR_LSTAR, (uint64_t)SystemCallsHandler);
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wrmsr(MSR_SYSCALL_MASK, 0);
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}
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