Added function memset() and replaced loop in function print() with

memcpy().
Gurgel100 · Aug 3, 2014 · 8a70e9a · 8a70e9a
1 parent 7955595
commit 8a70e9a
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Showing 2 changed files with 12 additions and 2 deletions.
diff --git a/kernel/bootloader.c b/kernel/bootloader.c
@@ -293,11 +293,12 @@ void scrollScreen(int Anzahl)
 	char *gs = (char*)GRAFIKSPEICHER;
 	for(i = 0; i < Anzahl; i++)
 	{
-		for(zeile = 0; zeile < 24; zeile++)
+		memcpy(gs, gs + zeile * 80, 24 * 80);
+		/*for(zeile = 0; zeile < 24; zeile++)
 			for(spalte = 0; spalte < 80; spalte++)
 			{
 				gs[zeile * 80 + spalte] = gs[(zeile + 1) * 80 + spalte];
-			}
+			}*/
 		//Letzte Zeile löschen
 		zeile = 24 - i;
 		for(spalte = 0; spalte < 80; spalte++)
@@ -345,6 +346,14 @@ void *memcpy(void *to, const void *from, size_t size)
 	return to;
 }
 
+void *memset(void *block, int c, size_t n)
+{
+	unsigned char volatile *i;
+	for(i = block; i < block + n; i++)
+		*i = (unsigned char)c;
+	return block;
+}
+
 size_t strlen(const char *cs)
 {
 	register size_t i;

diff --git a/kernel/bootloader.h b/kernel/bootloader.h
@@ -23,6 +23,7 @@ void clearDisp(void);
 void scrollScreen(int Anzahl);
 char *IntToStr(int32_t Zahl);
 void *memcpy(void *to, const void *from, size_t size);
+void *memset(void *block, int c, size_t n);
 size_t strlen(const char *cs);
 void panic(const char *string);