git: port from mercurial repo.

Signed-off-by: Amlal El Mahrouss <amlal.elmahrouss@icloud.com>

1 files changed, 35 insertions, 0 deletions

diff --git a/HALKit/AMD64/ControlRegister.s b/HALKit/AMD64/ControlRegister.s
new file mode 100644
index 00000000..d7e0c019
--- /dev/null
+++ b/HALKit/AMD64/ControlRegister.s
@@ -0,0 +1,35 @@
+.globl write_cr3
+.globl write_cr0
+.globl read_cr2
+.globl read_cr3
+.globl read_cr0
+.globl flush_tlb
+
+.section .text
+    flush_tlb:
+        mov %rsi, %cr3
+        mov %cr3, %rsi
+        xor %rax, %rax
+        ret
+
+    read_cr3:
+        movq %rax, %cr3
+        ret
+
+    read_cr0:
+        movq %rax, %cr0
+        ret
+
+    read_cr2:
+        movq %rax, %cr2
+        ret
+
+    write_cr3:
+        movq %cr3, %rdi
+        ret
+
+    write_cr0:
+        movq %cr0, %rdi
+        ret
+
+