From 1fb8c165149314f5833c7483582cf18250809fef Mon Sep 17 00:00:00 2001
From: shockrahwow <alejandros714@protonmail.com>
Date: Fri, 29 Nov 2019 00:46:42 -0800
Subject: [PATCH] timer wait behavior is really fucked and debugging this is an
 awful pain so juust check todos

---
 pit.c | 8 ++++++--
 pit.h | 4 +++-
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/pit.c b/pit.c
index 35c2d43..8dc2125 100644
--- a/pit.c
+++ b/pit.c
@@ -4,7 +4,7 @@
 #include "serial.h"
 #include "stlio.h"
 
-u32 timer_ticks = 0;
+volatile u32 timer_ticks = 0;
 
 void inc_ticks(struct cpu_reg_state* cpu) {
     timer_ticks++;
@@ -13,6 +13,10 @@ void inc_ticks(struct cpu_reg_state* cpu) {
     }
 }
 
+void timer_wait(u32 time) {
+	u32 ticks = time + timer_ticks;
+	while(timer_ticks < ticks);
+}
 void pit_install_timer(void) {
     init_irq_handler(0, inc_ticks); // timer interrupt request falls into int 0
-}
\ No newline at end of file
+}
diff --git a/pit.h b/pit.h
index 5aeea57..336fba2 100644
--- a/pit.h
+++ b/pit.h
@@ -9,4 +9,6 @@
 
 void inc_ticks(struct cpu_reg_state*);
 
-void pit_install_timer(void);
\ No newline at end of file
+void timer_wait(u32);
+
+void pit_install_timer(void);