1 files changed, 45 insertions, 0 deletions
diff --git a/dev/boot/src/HEL/AMD64/BootAPI.S b/dev/boot/src/HEL/AMD64/BootAPI.S
index 963ef46a..9cc15918 100644
--- a/dev/boot/src/HEL/AMD64/BootAPI.S
+++ b/dev/boot/src/HEL/AMD64/BootAPI.S
@@ -58,3 +58,48 @@ boot_read_cr3:
 boot_write_cr3:
     mov cr3, rcx
     ret
+
+.section .text
+
+.extern rt_wait_400ns
+
+.global rt_out8
+.global rt_out16
+.global rt_out32
+
+.global rt_in8
+.global rt_in16
+.global rt_in32
+
+rt_out8:
+    mov al, dl
+    mov dx, cx
+    out dx, al
+    ret
+
+rt_out16:
+    mov ax, dx
+    mov dx, cx
+    out dx, ax
+    ret
+
+rt_out32:
+    mov eax, edx
+    mov edx, ecx
+    out dx, eax
+    ret
+
+rt_in8:
+    mov dx, cx
+    in al, dx
+    ret
+
+rt_in16:
+    mov edx, ecx
+    in ax, dx
+    ret
+
+rt_in32:
+    mov rdx, rcx
+    in eax, dx
+    ret
+\ No newline at end of file