[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/libc/glibc/glibc-2.22/sysdeps/ia64/hp-timing.h b/ap/libc/glibc/glibc-2.22/sysdeps/ia64/hp-timing.h
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+/* High precision, low overhead timing functions. IA-64 version.
+ Copyright (C) 2001-2015 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@cygnus.com>, 2001.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef _HP_TIMING_H
+#define _HP_TIMING_H 1
+
+/* We always assume having the timestamp register. */
+#define HP_TIMING_AVAIL (1)
+#define HP_SMALL_TIMING_AVAIL (1)
+
+/* We indeed have inlined functions. */
+#define HP_TIMING_INLINE (1)
+
+/* We use 64bit values for the times. */
+typedef unsigned long int hp_timing_t;
+
+/* The Itanium/Merced has a bug where the ar.itc register value read
+ is not correct in some situations. The solution is to read again.
+ For now we always do this until we know how to recognize a fixed
+ processor implementation. */
+#define REPEAT_READ(val) __builtin_expect ((long int) val == -1, 0)
+
+/* That's quite simple. Use the `ar.itc' instruction. */
+#define HP_TIMING_NOW(Var) \
+ ({ unsigned long int __itc; \
+ do \
+ asm volatile ("mov %0=ar.itc" : "=r" (__itc) : : "memory"); \
+ while (REPEAT_READ (__itc)); \
+ Var = __itc; })
+
+#include <hp-timing-common.h>
+
+#endif /* hp-timing.h */