From 6a2ccaf2b63e89e17e8de949137c3039e10e43d7 Mon Sep 17 00:00:00 2001
From: Razvan Deaconescu <razvan.deaconescu@cs.pub.ro>
Date: Fri, 24 Dec 2021 13:24:54 +0200
Subject: [PATCH] chap-05: Add io.mac dependency file for assembly source code

Signed-off-by: Razvan Deaconescu <razvan.deaconescu@cs.pub.ro>
---
 curs/chap-05-ihs/io.mac | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 curs/chap-05-ihs/io.mac

diff --git a/curs/chap-05-ihs/io.mac b/curs/chap-05-ihs/io.mac
new file mode 100644
index 00000000..61a930ed
--- /dev/null
+++ b/curs/chap-05-ihs/io.mac
@@ -0,0 +1,22 @@
+;;; macro to use printf with 32bit parameters:
+;;; - 1st parameter MUST be an immediate in backquotes `EAX=%d ECX=%x \n\x0`
+;;;     escape \n and \x0 only work with backquotes
+;;; - rest of parameters MUST be 32bit
+;;; - gen purpose and flags are preserved
+;;; - stack is cleaned
+%macro PRINTF32 1-*
+    pushf
+    pushad
+    jmp     %%endstr
+%%str:       db      %1
+%%endstr:
+%rep  %0 - 1
+%rotate -1
+    push    dword %1
+%endrep
+    push %%str
+    call printf
+    add esp, 4*%0
+    popad
+    popf
+%endmacro