X-Git-Url: https://pd.if.org/git/?p=zos;a=blobdiff_plain;f=ioport.s;fp=ioport.s;h=7e15f43707164411501d7407700bdd5a1cef3b94;hp=0000000000000000000000000000000000000000;hb=05a22b85cec038fc3a804050dc3a3c62e748b389;hpb=5a6d8336c11140500330da69cd74490a07876fe1

diff --git a/ioport.s b/ioport.s
new file mode 100644
index 0000000..7e15f43
--- /dev/null
+++ b/ioport.s
@@ -0,0 +1,88 @@
+global outport8:function
+global outport16:function
+global outport32:function
+global inport8:function
+global inport16:function
+global inport32:function
+global outport_buf8:function
+global outport_buf16:function
+global outport_buf32:function
+global inport_buf8:function
+global inport_buf16:function
+global inport_buf32:function
+
+; rdi = buf len
+; rsi = buffer address
+; rdx = port addr
+
+inport_buf8:
+	mov rcx, rdi
+	cld
+	rep insb
+	ret
+
+inport_buf16:
+	mov rcx, rdi
+	cld
+	rep insw
+	ret
+
+inport_buf32:
+	mov rcx, rdi
+	cld
+	rep insd
+	ret
+
+outport_buf8:
+	mov rcx, rdi
+	cld
+	rep outsb
+	ret
+
+outport_buf16:
+	mov rcx, rdi
+	cld
+	rep outsw
+	ret
+
+outport_buf32:
+	mov rcx, rdi
+	cld
+	rep outsd
+	ret
+
+outport8:
+	mov rdx, rdi
+	mov rax, rsi
+	and rax, 0xff
+	out dx, al
+	ret
+
+outport16:
+	mov rdx, rdi
+	mov rax, rsi
+	and rax, 0xffff
+	out dx, ax
+	ret
+
+outport32:
+	mov rdx, rdi
+	mov rax, rsi
+	and rax, 0xffffffff
+	out dx, eax
+	ret
+
+inport8:
+	mov rdx, rdi
+	in al, dx
+	ret
+
+inport16:
+	mov rdx, rdi
+	in ax, dx
+	ret
+
+inport32:
+	mov rdx, rdi
+	in eax, dx
+	ret