[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/mach/hurd/sigwait.c b/ap/libc/glibc/glibc-2.23/sysdeps/mach/hurd/sigwait.c
new file mode 100644
index 0000000..ab10913
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/sysdeps/mach/hurd/sigwait.c
@@ -0,0 +1,133 @@
+/* Copyright (C) 1996-2016 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 <hurd.h>
+#include <hurd/signal.h>
+#include <hurd/msg.h>
+#include <hurd/sigpreempt.h>
+#include <assert.h>
+
+/* Select any of pending signals from SET or wait for any to arrive. */
+int
+__sigwait (const sigset_t *set, int *sig)
+{
+ struct hurd_sigstate *ss;
+ sigset_t mask, ready;
+ int signo = 0;
+ struct hurd_signal_preemptor preemptor;
+ jmp_buf buf;
+ mach_port_t wait;
+ mach_msg_header_t msg;
+
+ sighandler_t
+ preempt_fun (struct hurd_signal_preemptor *pe,
+ struct hurd_sigstate *ss,
+ int *sigp,
+ struct hurd_signal_detail *detail)
+ {
+ if (signo)
+ /* We've already been run; don't interfere. */
+ return SIG_ERR;
+
+ signo = *sigp;
+
+ /* Make sure this is all kosher */
+ assert (__sigismember (&mask, signo));
+
+ /* Make sure this signal is unblocked */
+ __sigdelset (&ss->blocked, signo);
+
+ return pe->handler;
+ }
+
+ void
+ handler (int sig)
+ {
+ assert (sig == signo);
+ longjmp (buf, 1);
+ }
+
+ wait = __mach_reply_port ();
+
+ if (set != NULL)
+ /* Crash before locking */
+ mask = *set;
+ else
+ __sigemptyset (&mask);
+
+ ss = _hurd_self_sigstate ();
+ __spin_lock (&ss->lock);
+
+ /* See if one of these signals is currently pending. */
+ __sigandset (&ready, &ss->pending, &mask);
+ if (! __sigisemptyset (&ready))
+ {
+ for (signo = 1; signo < NSIG; signo++)
+ if (__sigismember (&ready, signo))
+ {
+ __sigdelset (&ready, signo);
+ goto all_done;
+ }
+ /* Huh? Where'd it go? */
+ abort ();
+ }
+
+ /* Wait for one of them to show up. */
+
+ if (!setjmp (buf))
+ {
+ /* Make the preemptor */
+ preemptor.signals = mask;
+ preemptor.first = 0;
+ preemptor.last = -1;
+ preemptor.preemptor = preempt_fun;
+ preemptor.handler = handler;
+
+ /* Install this preemptor */
+ preemptor.next = ss->preemptors;
+ ss->preemptors = &preemptor;
+
+ __spin_unlock (&ss->lock);
+
+ /* Wait. */
+ __mach_msg (&msg, MACH_RCV_MSG, 0, sizeof (msg), wait,
+ MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL);
+ abort ();
+ }
+ else
+ {
+ assert (signo);
+
+ __spin_lock (&ss->lock);
+
+ /* Delete our preemptor. */
+ assert (ss->preemptors == &preemptor);
+ ss->preemptors = preemptor.next;
+ }
+
+
+all_done:
+ spin_unlock (&ss->lock);
+
+ __mach_port_destroy (__mach_task_self (), wait);
+ *sig = signo;
+ return 0;
+}
+
+libc_hidden_def (__sigwait)
+weak_alias (__sigwait, sigwait)