sorted sources per functionality in different subdirs

BaS_gcc/exe/basflash_start.c

@@ -0,0 +1,42 @@
+/*
+ * basflash_start.c
+ *
+ *
+ * This file is part of BaS_gcc.
+ *
+ * BaS_gcc is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * BaS_gcc is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with BaS_gcc.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *  Created on: 26.02.2013
+ *      Author: Markus Fröschle
+ */
+
+#include <stdint.h>
+
+static uint32_t ownstack[4096];
+static uint32_t *stackptr = &ownstack[4095];
+
+/*
+ * setup our own stack in SDRAM to prevent clashing BaS's in SRAM (size limited).
+ */
+void startup(void)
+{
+	static uint32_t oldstack;
+
+	void basflash(void);
+	__asm__ __volatile__("move.l	sp,%0\n\t" : "=g"(oldstack) : :);
+	__asm__ __volatile__("move.l	%0,sp\n\t" : : "g"(stackptr) : );
+	basflash();
+	__asm__ __volatile__("move.l	%0,sp\n\t" : : "g"(oldstack) : "sp");
+	(void) stackptr; /* make compiler happy about unused variables */
+}