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[AArch64] Support __mcount profiling.

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This commit is contained in:
Marcus Shawcroft 2013-09-24 13:03:02 +01:00
parent cfa4df9500
commit 8f5a90c270
2 changed files with 12 additions and 8 deletions
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5
ports/ChangeLog.aarch64
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@ -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.

15
ports/sysdeps/aarch64/machine-gmon.h
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@ -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)); \
}