1 files changed, 84 insertions, 0 deletions
diff --git a/ports/MSP430/chcore.c b/ports/MSP430/chcore.c
new file mode 100644
index 000000000..86765c675
--- /dev/null
+++ b/ports/MSP430/chcore.c
@@ -0,0 +1,84 @@
+/*
+    ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
+
+    This file is part of ChibiOS/RT.
+
+    ChibiOS/RT 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.
+
+    ChibiOS/RT 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <ch.h>
+
+/**
+ * This function implements the idle thread infinite loop. The function should
+ * put the processor in the lowest power mode capable to serve interrupts.
+ * The priority is internally set to the minimum system value so that this
+ * thread is executed only if there are no other ready threads in the system.
+ */
+void _IdleThread(void *p) {
+
+  while (TRUE)
+    ;
+}
+
+/**
+ * Abonormal system termination handler. Invoked by the ChibiOS/RT when an
+ * abnormal unrecoverable condition is met.
+ */
+void chSysHalt(void) {
+
+  chSysLock();
+
+  while (TRUE)
+    ;
+}
+
+/**
+ * Context switch.
+ */
+void chSysSwitchI(Thread *otp, Thread *ntp) {
+  register struct intctx *sp asm("r1");
+
+  asm volatile ("push    r11                                    \n\t" \
+                "push    r10                                    \n\t" \
+                "push    r9                                     \n\t" \
+                "push    r8                                     \n\t" \
+                "push    r7                                     \n\t" \
+                "push    r6                                     \n\t" \
+                "push    r6                                     \n\t" \
+                "push    r4");
+  otp->p_ctx.sp = sp;
+  sp = ntp->p_ctx.sp;
+  asm volatile ("pop     r4                                     \n\t" \
+                "pop     r5                                     \n\t" \
+                "pop     r6                                     \n\t" \
+                "pop     r7                                     \n\t" \
+                "pop     r8                                     \n\t" \
+                "pop     r9                                     \n\t" \
+                "pop     r10                                    \n\t" \
+                "pop     r11" : : "r" (sp));
+}
+
+/**
+ * Prints a message on the system console (if any).
+ */
+void chSysPuts(char *msg) {
+}
+
+void threadstart(void) {
+
+  asm volatile ("eint                                           \n\t" \
+                "mov     r11, r15                               \n\t" \
+                "call    r10                                    \n\t" \
+                "call    #chThdExit");
+}