Diff: CThunk.cpp

Revision:

0:7de85300ea3a

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/CThunk.cpp	Wed Aug 13 07:43:23 2014 +0000
@@ -0,0 +1,36 @@
+/* General C++ Object Thunking class
+ *
+ * - allows direct callbacks to non-static C++ class functions
+ * - keeps track for the corresponding class instance
+ * - supports an optional context parameter for the called function
+ * - ideally suited for class object receiving interrupts (NVIC_SetVector)
+ *
+ * Copyright (c) 2014 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <string.h>
+#include <stdint.h>
+#include "CThunk.h"
+
+#ifdef __thumb__
+const uint8_t g_cthunk_opcodes[CTHUNK_OPCODES_SIZE] = {
+    /* add r0, pc, CTHUNK_OPCODES_SIZE   */
+    CTHUNK_OPCODES_SIZE/4, 0xA0|0,
+    /* LDM R0!, {r0, r1, pc}             */
+    0x90, 0xE8, 0x03, 0x80,
+    /* zero padding to multiples of four */
+    0x00, 0x00,
+};
+#endif