Synopsys ARC port, adding support for ARC EM and HS cores -- continue…

…d from PR #8. (FreeRTOS#28)

Synopsys ARC port, adding support for ARC EM and HS cores.

portable/ThirdParty/GCC/ARC_EM_HS/arc_freertos_exceptions.c

@@ -0,0 +1,52 @@
+/*
+ * FreeRTOS Kernel V10.2.1
+ * Copyright (C) 2019 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * http://www.FreeRTOS.org
+ * http://aws.amazon.com/freertos
+ *
+ * 1 tab == 4 spaces!
+ */
+
+/**
+ * \file
+ * \brief   exception processing for freertos
+ */
+
+// #include "embARC.h"
+
+#include "arc_freertos_exceptions.h"
+
+#ifdef __GNU__
+extern void gnu_printf_setup(void);
+#endif
+/**
+ * \brief  freertos related cpu exception initialization, all the interrupts handled by freertos must be not
+ * fast irqs. If fiq is needed, please install the default firq_exc_entry or your own fast irq entry into
+ * the specific interrupt exception.
+ */
+void freertos_exc_init(void)
+{
+
+#ifdef __GNU__
+    gnu_printf_setup();
+#endif
+
+}

portable/ThirdParty/GCC/ARC_EM_HS/arc_freertos_exceptions.h

@@ -0,0 +1,45 @@
+/*
+ * FreeRTOS Kernel V10.2.1
+ * Copyright (C) 2019 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * http://www.FreeRTOS.org
+ * http://aws.amazon.com/freertos
+ *
+ * 1 tab == 4 spaces!
+ */
+
+#ifndef ARC_FREERTOS_EXCEPTIONS_H
+#define ARC_FREERTOS_EXCEPTIONS_H
+
+/*
+ * here, all arc cpu exceptions share the same entry, also for all interrupt
+ * exceptions
+ */
+extern void exc_entry_cpu(void);    /* cpu exception entry for freertos */
+extern void exc_entry_int(void);    /* int exception entry for freertos */
+
+/* task dispatch functions in .s */
+extern void start_r(void);
+extern void start_dispatch();
+extern void dispatch();
+
+extern void freertos_exc_init(void);
+
+#endif  /* ARC_FREERTOS_EXCEPTIONS_H */