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Enable xsave instructions

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This commit is contained in:
Jeremy Soller
2018-08-24 14:21:53 -06:00
parent 615d9e1365
commit ad8f6a97e9
1 changed files with 4 additions and 4 deletions
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x86_64/startup-x86_64.asm
+4 -4
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@@ -26,9 +26,9 @@ startup_ap:
mov edi, 0x70000
mov cr3, edi
;enable FXSAVE/FXRSTOR, Page Global, Page Address Extension, and Page Size Extension
;enable OSXSAVE, FXSAVE/FXRSTOR, Page Global, Page Address Extension, and Page Size Extension
mov eax, cr4
or eax, 1 << 9 | 1 << 7 | 1 << 5 | 1 << 4
or eax, 1 << 18 | 1 << 9 | 1 << 7 | 1 << 5 | 1 << 4
mov cr4, eax
; load protected mode GDT
@@ -91,9 +91,9 @@ startup_arch:
mov edi, 0x70000
mov cr3, edi
;enable FXSAVE/FXRSTOR, Page Global, Page Address Extension, and Page Size Extension
;enable OSXSAVE, FXSAVE/FXRSTOR, Page Global, Page Address Extension, and Page Size Extension
mov eax, cr4
or eax, 1 << 9 | 1 << 7 | 1 << 5 | 1 << 4
or eax, 1 << 18 | 1 << 9 | 1 << 7 | 1 << 5 | 1 << 4
mov cr4, eax
; load protected mode GDT