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authorMarcus Shawcroft <marcus.shawcroft@linaro.org>2013-09-24 13:03:02 +0100
committerMarcus Shawcroft <marcus.shawcroft@linaro.org>2013-09-24 13:03:02 +0100
commit8f5a90c270d2d1860e87764a14d739988c53e7b2 (patch)
tree85db9820627d35ed4e837db5dbec714be16f91ee /ports
parentcfa4df95003c963c16d2102aef9c806f8175f373 (diff)
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[AArch64] Support __mcount profiling.
Diffstat (limited to 'ports')
-rw-r--r--ports/ChangeLog.aarch645
-rw-r--r--ports/sysdeps/aarch64/machine-gmon.h15
2 files changed, 12 insertions, 8 deletions
diff --git a/ports/ChangeLog.aarch64 b/ports/ChangeLog.aarch64
index 0090872dbe..3daf3ed495 100644
--- a/ports/ChangeLog.aarch64
+++ b/ports/ChangeLog.aarch64
@@ -1,3 +1,8 @@
+2013-09-24  Venkataramanan Kumar  <venkataramanan.kumar@linaro.org>
+
+	* sysdeps/aarch64/machine-gmon.h (__mcount): Accept parameter and
+	pass it to mcount_internal.
+
 2013-09-24 Venkataramanan Kumar  <venkataramanan.kumar@linaro.org>
 
 	* sysdeps/unix/sysv/linux/aarch64/sigcontextinfo.h: New file.
diff --git a/ports/sysdeps/aarch64/machine-gmon.h b/ports/sysdeps/aarch64/machine-gmon.h
index 4425965a48..5cc2941258 100644
--- a/ports/sysdeps/aarch64/machine-gmon.h
+++ b/ports/sysdeps/aarch64/machine-gmon.h
@@ -16,10 +16,9 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-/* GCC version 2 gives us a perfect magical function to get
-   just the information we need:
-     void *__builtin_return_address (unsigned int N)
-   returns the return address of the frame N frames up.  */
+/* Accept 'frompc' address as argument from the function that calls
+   __mcount for profiling.  Use  __builtin_return_address (0)
+   for the 'selfpc' address.  */
 
 #include <sysdep.h>
 
@@ -28,8 +27,8 @@ static void mcount_internal (u_long frompc, u_long selfpc);
 #define _MCOUNT_DECL(frompc, selfpc) \
 static inline void mcount_internal (u_long frompc, u_long selfpc)
 
-#define MCOUNT \
-void __mcount (void)							      \
-{									      \
-  mcount_internal ((u_long) RETURN_ADDRESS (1), (u_long) RETURN_ADDRESS (0)); \
+#define MCOUNT                                                    \
+void __mcount (void *frompc)                                      \
+{                                                                 \
+  mcount_internal ((u_long) frompc, (u_long) RETURN_ADDRESS (0)); \
 }