1 files changed, 49 insertions, 0 deletions
diff --git a/src/hardware/port.asm b/src/hardware/port.asm
new file mode 100644
index 0000000..555a4e8
--- /dev/null
+++ b/src/hardware/port.asm
@@ -0,0 +1,49 @@
+[bits 32]
+
+global port8_write
+global port8_read
+
+; void port8_write( port8_t *port, uint8_t data );
+port8_write:
+	push ebp
+	mov ebp, esp
+	mov ecx, [ebp+8]
+	mov edx, DWORD [ecx]
+	movzx ax, BYTE [ebp+12]
+	out dx, al
+	leave
+	ret
+
+; uint8_t port8_read( port8_t *port )
+port8_read:
+	push ebp
+	mov ebp, esp
+	mov ecx, DWORD [ebp+8]
+	mov edx, [ecx]
+	in al, dx
+	leave
+	ret
+
+global port32_write
+global port32_read
+
+; void port32_write( port32_t *port, uint32_t data );
+port32_write:
+	push ebp
+	mov ebp, esp
+	mov ecx, [ebp+8]
+	mov edx, DWORD [ecx]
+	mov eax, DWORD [ebp+12]
+	out dx, eax
+	leave
+	ret
+
+; uint32_t port32_read( port32_t *port )
+port32_read:
+	push ebp
+	mov ebp, esp
+	mov ecx, DWORD [ebp+8]
+	mov edx, [ecx]
+	in eax, dx
+	leave
+	ret