Add %2x support to kprintf

Signed-off-by: Tormod Volden <debian.tormod@gmail.com>

diff --git a/Kernel/devio.c b/Kernel/devio.c
index 294d873..8f4a32b 100644 (file)
--- a/Kernel/devio.c
+++ b/Kernel/devio.c
@@ -617,6 +617,12 @@ void kputhex(unsigned int v)
        putdigit0(v);
 }
 
+void kputhexbyte(unsigned int v)
+{
+       putdigit0(v >> 4);
+       putdigit0(v);
+}
+
 void kputunum(unsigned int v)
 {
        unsigned char n = 0;
@@ -674,6 +680,14 @@ void kprintf(const char *fmt, ...)
                                        continue;
                                }
 
+                               case '2': /* assume an x is following */
+                               {
+                                       char c = va_arg(ap, int);
+                                       kputhexbyte(c);
+                                       fmt += 2;
+                                       continue;
+                               }
+
 #ifndef CONFIG_32BIT
                                case 'p':
 #endif