Created vector.c by example. Added reset_handler entry to linker script.

lib/lpc17xx/vector.c

@@ -0,0 +1,94 @@
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2010 Piotr Esden-Tempski <piotr@esden.net>
+ *
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This library 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#define WEAK __attribute__ ((weak))
+
+/* Symbols exported by the linker script(s). */
+extern unsigned _etext, _data, _edata, _ebss, _stack;
+
+void main(void);
+void reset_handler(void);
+void blocking_handler(void);
+void null_handler(void);
+
+void WEAK nmi_handler(void);
+void WEAK hard_fault_handler(void);
+void WEAK mem_manage_handler(void);
+void WEAK bus_fault_handler(void);
+void WEAK usage_fault_handler(void);
+void WEAK sv_call_handler(void);
+void WEAK debug_monitor_handler(void);
+void WEAK pend_sv_handler(void);
+void WEAK sys_tick_handler(void);
+
+/* TODO: Interrupt handler prototypes */
+
+__attribute__ ((section(".vectors")))
+void (*const vector_table[]) (void) = {
+	(void*)&_stack,		/* Addr: 0x0000_0000 */
+	reset_handler,		/* Addr: 0x0000_0004 */
+	nmi_handler,		/* Addr: 0x0000_0008 */
+	hard_fault_handler,	/* Addr: 0x0000_000C */
+	mem_manage_handler,	/* Addr: 0x0000_0010 */
+	bus_fault_handler,	/* Addr: 0x0000_0014 */
+	usage_fault_handler,	/* Addr: 0x0000_0018 */
+	0, 0, 0, 0,		/* Reserved Addr: 0x0000_001C - 0x0000_002B */
+	sv_call_handler,	/* Addr: 0x0000_002C */
+	debug_monitor_handler,	/* Addr: 0x0000_0030 */
+	0,			/* Reserved Addr: 0x0000_00034 */
+	pend_sv_handler,	/* Addr: 0x0000_0038 */
+	sys_tick_handler,	/* Addr: 0x0000_003C */
+};
+
+
+void reset_handler(void)
+{
+	volatile unsigned *src, *dest;
+	__asm__("MSR msp, %0" : : "r"(&_stack));
+
+	for (src = &_etext, dest = &_data; dest < &_edata; src++, dest++)
+		*dest = *src;
+
+	while (dest < &_ebss)
+		*dest++ = 0;
+
+	/* Call the application's entry point. */
+	main();
+}
+
+void blocking_handler(void)
+{
+	while (1) ;
+}
+
+void null_handler(void)
+{
+	/* Do nothing. */
+}
+
+#pragma weak nmi_handler = null_handler
+#pragma weak hard_fault_handler = blocking_handler
+#pragma weak mem_manage_handler = blocking_handler
+#pragma weak bus_fault_handler = blocking_handler
+#pragma weak usage_fault_handler = blocking_handler
+#pragma weak sv_call_handler = null_handler
+#pragma weak debug_monitor_handler = null_handler
+#pragma weak pend_sv_handler = null_handler
+#pragma weak sys_tick_handler = null_handler
+/* TODO: Interrupt handler weak aliases */