1 files changed, 70 insertions, 0 deletions
diff --git a/ports/ARMCM3/chcore.c b/ports/ARMCM3/chcore.c
new file mode 100644
index 000000000..a98da808b
--- /dev/null
+++ b/ports/ARMCM3/chcore.c
@@ -0,0 +1,70 @@
+/*
+    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>
+
+/*
+ * System idle thread loop.
+ */
+void _IdleThread(void *p) {
+
+  while (TRUE) {
+  }
+}
+
+/*
+ * System console message (not implemented).
+ */
+void chSysPuts(char *msg) {
+}
+
+/*
+ * Context switch.
+ */
+void chSysSwitchI(Thread *otp, Thread *ntp) {
+  register struct intctx * volatile sp asm("sp"); /* Don't ask... */
+
+#ifdef CH_CURRP_REGISTER_CACHE
+  asm ("" : : : "r4", "r5", "r6", "r8", "r9", "r10", "r11", "lr");
+#else
+  asm ("" : : : "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "lr");
+#endif
+  otp->p_ctx.r13 = sp;
+  sp = ntp->p_ctx.r13;
+}
+
+/*
+ * System halt.
+ */
+__attribute__((naked, weak))
+void chSysHalt(void) {
+
+  while (TRUE) {
+  }
+}
+
+__attribute__((naked, weak))
+void threadstart(void) {
+
+  chSysUnlock();
+  asm volatile ("mov     r0, r5                                 \n\t" \
+                "blx     r4                                     \n\t" \
+                "bl      chThdExit                              ");
+
+}