Fawwaz Nadzmy
/
mbed-STM
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mbed-dev
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Diff: api/toolchain.h
- Revision:
- 147:30b64687e01f
- Parent:
- 144:ef7eb2e8f9f7
--- a/api/toolchain.h Thu Sep 08 15:05:30 2016 +0100
+++ b/api/toolchain.h Fri Sep 16 16:24:25 2016 +0100
@@ -240,6 +240,29 @@
*/
#define MBED_DEPRECATED_SINCE(D, M) MBED_DEPRECATED(M " [since " D "]")
+/** MBED_CALLER_ADDR()
+ * Returns the caller of the current function.
+ *
+ * @note
+ * This macro is only implemented for GCC and ARMCC.
+ *
+ * @code
+ * #include "toolchain.h"
+ *
+ * printf("This function was called from %p", MBED_CALLER_ADDR());
+ * @endcode
+ *
+ * @return Address of the calling function
+ */
+#ifndef MBED_CALLER_ADDR
+#if (defined(__GNUC__) || defined(__clang__)) && !defined(__CC_ARM)
+#define MBED_CALLER_ADDR() __builtin_extract_return_addr(__builtin_return_address(0))
+#elif defined(__CC_ARM)
+#define MBED_CALLER_ADDR() __builtin_return_address(0)
+#else
+#define MBED_CALLER_ADDR() (NULL)
+#endif
+#endif
// FILEHANDLE declaration
#if defined(TOOLCHAIN_ARM)