From f7c01c4b91c36fc0392ca6f6ff9736ef7fae8a1a Mon Sep 17 00:00:00 2001
From: Felix Kopp <sandtler@sandtler.club>
Date: Sat, 13 Jun 2020 23:06:13 +0200
Subject: [PATCH] Use memcpy and memset instead of custom loop

---
 arch/at91sam3x8e/startup.c | 24 +++++++++++-------------
 1 file changed, 11 insertions(+), 13 deletions(-)

diff --git a/arch/at91sam3x8e/startup.c b/arch/at91sam3x8e/startup.c
index eb1b9b0..e2179e4 100644
--- a/arch/at91sam3x8e/startup.c
+++ b/arch/at91sam3x8e/startup.c
@@ -28,6 +28,7 @@
 #include <stddef.h>
 #include <stdint.h>
 #include <arch/at91sam3x8e/interrupt.h>
+#include <ardix/string.h>
 #include <toolchain.h>
 
 /* from flash.ld */
@@ -46,19 +47,16 @@ void do_bootstrap(void);
 
 void isr_reset(void)
 {
-	uint32_t *src;
-	uint32_t *dest;
-
-	/* copy .data to sram */
-	dest = &_etext;
-	src = &_srelocate;
-	while (src < &_erelocate)
-		*dest++ = *src++;
-
-	/** clear .bss */
-	dest = &_szero;
-	while (dest <= &_ezero)
-		*dest++ = 0;
+	memcpy(
+		&_etext,
+		&_srelocate,
+		(size_t)(&_erelocate) - (size_t)(&_srelocate)
+	);
+	memset(
+		&_szero,
+		0,
+		(size_t)(&_ezero) - (size_t)(&_szero)
+	);
 
 	/* start the Kernel */
 	do_bootstrap();