1 files changed, 81 insertions, 0 deletions
diff --git a/os/kernel/src/chdebug.c b/os/kernel/src/chdebug.c
new file mode 100644
index 000000000..9a8120b29
--- /dev/null
+++ b/os/kernel/src/chdebug.c
@@ -0,0 +1,81 @@
+/*
+    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/>.
+*/
+
+/**
+ * @file chdebug.c
+ * @brief ChibiOS/RT Debug code.
+ * @addtogroup Debug
+ * @{
+ */
+
+#include <ch.h>
+
+#if CH_DBG_ENABLE_TRACE
+/**
+ * @brief Public trace buffer.
+ */
+TraceBuffer trace_buffer;
+
+/**
+ * @brief Trace circular buffer subsystem initialization.
+ */
+void trace_init(void) {
+
+  trace_buffer.tb_size = TRACE_BUFFER_SIZE;
+  trace_buffer.tb_ptr = &trace_buffer.tb_buffer[0];
+}
+
+/**
+ * @brief Inserts in the circular debug trace buffer a context switch record.
+ *
+ * @param[in] otp the thread being switched out
+ * @param[in] ntp the thread to be switched in
+ */
+void chDbgTrace(Thread *otp, Thread *ntp) {
+
+  trace_buffer.tb_ptr->cse_wtobjp = otp->p_wtobjp;
+  trace_buffer.tb_ptr->cse_time = chTimeNow();
+  trace_buffer.tb_ptr->cse_state = otp->p_state;
+  trace_buffer.tb_ptr->cse_tid = (unsigned)ntp >> 4;
+  if (++trace_buffer.tb_ptr >= &trace_buffer.tb_buffer[TRACE_BUFFER_SIZE])
+    trace_buffer.tb_ptr = &trace_buffer.tb_buffer[0];
+}
+#endif /* CH_DBG_ENABLE_TRACE */
+
+#if CH_DBG_ENABLE_ASSERTS || CH_DBG_ENABLE_CHECKS || CH_DBG_ENABLE_STACK_CHECK
+/**
+ * @brief Pointer to the panic message.
+ * @details This pointer is meant to be accessed through the debugger, it is
+ *          written once and then the system is halted.
+ */
+char *panic_msg;
+
+/**
+ * @brief Prints a panic message on the console and then halts the system.
+ *
+ * @param[in] msg the pointer to the panic message string
+ */
+void chDbgPanic(char *msg) {
+
+  panic_msg = msg;
+  chSysHalt();
+}
+#endif /* CH_DBG_ENABLE_ASSERTS || CH_DBG_ENABLE_CHECKS || CH_DBG_ENABLE_STACK_CHECK */
+
+/** @} */