43 lines
458 B
ArmAsm
43 lines
458 B
ArmAsm
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.global pmap_switch
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.type pmap_switch, @function
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pmap_switch:
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mov %rdi, %cr3
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ret
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.global gigabyte_pages
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.type gigabyte_pages, @function
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gigabyte_pages:
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push %rbp
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mov %rsp, %rbp
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push %rbx
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mov $0x80000001, %eax
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cpuid
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andl $0x4000000, %edx
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jz 2f
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1: mov $0x1, %rax
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jmp 3f
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2: mov $0x0, %rax
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3: pop %rbx
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pop %rbp
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ret
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.global enable_nx
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.type enable_nx, @function
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enable_nx:
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mov $0xC0000080, %ecx
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rdmsr
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or $0x800, %eax
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wrmsr
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ret
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