Mark
45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
#pragma once
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#include "arch/amd64/asm/asm_irq.h"
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#include "arch/amd64/hw/gdt.h"
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#include "sys/assert.h"
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#include "sys/types.h"
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#define FXSAVE_REGION 512
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#include "arch/amd64/asm/asm_cpu.h"
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#define thread_self get_cpu()->thread
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#define MSR_IA32_APIC_BASE 0x1B
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#define IA32_APIC_BASE_BSP 0x100
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#define IA32_APIC_BASE_ENABLE 0x800
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#define MSR_IA32_EFER 0xC0000080
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#define IA32_EFER_NXE (1 << 11)
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#define MSR_IA32_KERNEL_GS_BASE 0xC0000102
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static inline uint64_t rdmsr(uint32_t addr) {
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uint64_t v;
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asm volatile ("rdmsr":"=A"(v):"c"(addr));
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return v;
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}
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static inline void wrmsr(uint32_t addr, uint64_t v) {
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uint32_t low = (v & 0xFFFFFFFF), high = v >> 32;
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asm volatile ("wrmsr"::"c"(addr),"a"(low),"d"(high));
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}
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#if defined(AMD64_SMP)
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extern struct cpu cpus[AMD64_MAX_SMP];
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static inline struct cpu *get_cpu(void) {
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struct cpu *cpu;
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asm volatile ("movq %%gs:0, %0":"=r"(cpu));
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return cpu;
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}
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#else
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extern struct cpu __amd64_cpu;
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#define get_cpu() ((struct cpu *) &__amd64_cpu)
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#endif
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