[Feature][T106]ZXW P56U09 code
Only Configure: Yes
Affected branch: master
Affected module: unknow
Is it affected on both ZXIC and MTK: only ZXIC
Self-test: No
Doc Update: No
Change-Id: I3cbd8b420271eb20c2b40ebe5c78f83059cd42f3
diff --git a/ap/libc/glibc/glibc-2.23/sysdeps/posix/clock_getres.c b/ap/libc/glibc/glibc-2.23/sysdeps/posix/clock_getres.c
new file mode 100644
index 0000000..fb328d7
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/sysdeps/posix/clock_getres.c
@@ -0,0 +1,118 @@
+/* clock_getres -- Get the resolution of a POSIX clockid_t.
+ Copyright (C) 1999-2016 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ 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/>. */
+
+#include <errno.h>
+#include <stdint.h>
+#include <time.h>
+#include <unistd.h>
+#include <sys/param.h>
+#include <libc-internal.h>
+
+
+#if HP_TIMING_AVAIL
+static long int nsec; /* Clock frequency of the processor. */
+
+static int
+hp_timing_getres (struct timespec *res)
+{
+ if (__glibc_unlikely (nsec == 0))
+ {
+ hp_timing_t freq;
+
+ /* This can only happen if we haven't initialized the `nsec'
+ variable yet. Do this now. We don't have to protect this
+ code against multiple execution since all of them should
+ lead to the same result. */
+ freq = __get_clockfreq ();
+ if (__glibc_unlikely (freq == 0))
+ /* Something went wrong. */
+ return -1;
+
+ nsec = MAX (UINT64_C (1000000000) / freq, 1);
+ }
+
+ /* Fill in the values.
+ The seconds are always zero (unless we have a 1Hz machine). */
+ res->tv_sec = 0;
+ res->tv_nsec = nsec;
+
+ return 0;
+}
+#endif
+
+static inline int
+realtime_getres (struct timespec *res)
+{
+ long int clk_tck = sysconf (_SC_CLK_TCK);
+
+ if (__glibc_likely (clk_tck != -1))
+ {
+ /* This implementation assumes that the realtime clock has a
+ resolution higher than 1 second. This is the case for any
+ reasonable implementation. */
+ res->tv_sec = 0;
+ res->tv_nsec = 1000000000 / clk_tck;
+ return 0;
+ }
+
+ return -1;
+}
+
+
+/* Get resolution of clock. */
+int
+__clock_getres (clockid_t clock_id, struct timespec *res)
+{
+ int retval = -1;
+
+ switch (clock_id)
+ {
+#ifdef SYSDEP_GETRES
+ SYSDEP_GETRES;
+#endif
+
+#ifndef HANDLED_REALTIME
+ case CLOCK_REALTIME:
+ retval = realtime_getres (res);
+ break;
+#endif /* handled REALTIME */
+
+ default:
+#ifdef SYSDEP_GETRES_CPU
+ SYSDEP_GETRES_CPU;
+#endif
+#if HP_TIMING_AVAIL
+ if ((clock_id & ((1 << CLOCK_IDFIELD_SIZE) - 1))
+ == CLOCK_THREAD_CPUTIME_ID)
+ retval = hp_timing_getres (res);
+ else
+#endif
+ __set_errno (EINVAL);
+ break;
+
+#if HP_TIMING_AVAIL && !defined HANDLED_CPUTIME
+ case CLOCK_PROCESS_CPUTIME_ID:
+ case CLOCK_THREAD_CPUTIME_ID:
+ retval = hp_timing_getres (res);
+ break;
+#endif
+ }
+
+ return retval;
+}
+weak_alias (__clock_getres, clock_getres)