50 lines
631 B
ArmAsm
50 lines
631 B
ArmAsm
#include <mem.h>
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.intel_syntax noprefix
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#include <gdt.h>
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.global load_idt
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load_idt:
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lidt [rdi]
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ret
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.global read_cr0
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read_cr0:
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mov rax, cr0
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ret
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.global read_cr2
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read_cr2:
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mov rax, cr2
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ret
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.global read_cr3
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read_cr3:
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mov rax, cr3
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ret
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.global write_cr3
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write_cr3:
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mov cr3, rdi
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ret
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.global read_cr4
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read_cr4:
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mov rax, cr4
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ret
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.global load_gdt
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load_gdt:
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lgdt [rdi]
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mov ax, SEG_KDATA
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mov ss, ax
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mov ds, ax
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mov es, ax
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movabs rax, offset .load_gdt
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pushq SEG_KCODE
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push rax
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retfq # perform long jump to SEG_KCODE:.load_gdt
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.load_gdt:
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ret
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.global load_tr
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load_tr:
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mov rax, rdi
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ltr ax
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ret
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