From: Tormod Volden <debian.tormod@gmail.com>
Date: Fri, 23 Feb 2018 21:31:24 +0000 (+0100)
Subject: Add %2x support to kprintf
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=c1c789d7e534b7d3934e099bd5a202b2084d11d2;p=FUZIX.git

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 294d8730..8f4a32ba 100644
--- 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