From ba3c0964a0032d985f56cad2526c9627e64e1847 Mon Sep 17 00:00:00 2001
From: Victor Timofei <victor@vtimothy.com>
Date: Tue, 3 May 2022 23:50:50 +0300
Subject: [PATCH] Add support for long variables in kprintf

---
 kernel/kernel.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/kernel/kernel.c b/kernel/kernel.c
index 9d7829a..ba07ed2 100644
--- a/kernel/kernel.c
+++ b/kernel/kernel.c
@@ -99,7 +99,7 @@ void console_init(multiboot_info_t *mbi)
   console_y = 0;
 }
 
-void convert(int num, int base, char *buf, int bufsize)
+void convert(uint64_t num, int base, char *buf, int bufsize)
 {
   int idx = 0;
   buf[idx] = '\0';
@@ -135,7 +135,7 @@ void kprintf(char *format, ...)
   va_start(arg, format);
 
   char buffer[50];
-  int i;
+  long i;
 
   for (int idx = 0; format[idx] != '\0'; idx++) {
     while (format[idx] != '%') {
@@ -150,7 +150,7 @@ void kprintf(char *format, ...)
     idx++;
     switch (format[idx]) {
       case 'd':
-        i = va_arg(arg, int);
+        i = va_arg(arg, long);
         if (i < 0) {
           i = -i;
           console_puts('-');
@@ -160,7 +160,7 @@ void kprintf(char *format, ...)
         console_write(buffer);
         break;
       case 'X':
-        i = va_arg(arg, int);
+        i = va_arg(arg, long);
 
         convert(i, 16, buffer, 50);
         console_write(buffer);