Remove __need macros from signal.h.

The types affected are __sig_atomic_t, sig_atomic_t, __sigset_t,
sigset_t, sigval_t, sigevent_t, and siginfo_t. __sig_atomic_t is a
scalar, so it's now directly available from bits/types.h.  The others
get bits/types/ headers.

Side effects include: There have been small changes to which
non-signal headers expose which subset of the signal-related types.
A couple of architectures' nested siginfo_t fields had to be renamed
to prevent undesired macro expansion.  Internal code that wants to
manipulate signal masks must now include <sigsetops.h> (which is not
installed) and should be aware that __sigaddset, __sigandset,
__sigdelset, __sigemptyset, and __sigorset no longer return a value
(unlike the public API).  Relatedly, the public signal.h no longer
declares any of those functions.  The obsolete sigmask() macro no
longer has a system-specific definition -- in the cases where it
matters, it didn't work anyway.

New Linux architectures should create bits/siginfo-arch.h and/or
bits/siginfo-consts-arch.h to customize their siginfo_t, rather than
duplicating everything in bits/siginfo.h (which no longer exists).
Add new __SI_* macros if necessary.  Ports to other operating systems
are strongly encouraged to generalize this scheme further.

	* bits/sigevent-consts.h
	* bits/siginfo-consts.h
	* bits/types/__sigset_t.h
	* bits/types/sigevent_t.h
	* bits/types/siginfo_t.h
	* sysdeps/unix/sysv/linux/bits/sigevent-consts.h
	* sysdeps/unix/sysv/linux/bits/siginfo-consts.h
	* sysdeps/unix/sysv/linux/bits/types/__sigset_t.h
	* sysdeps/unix/sysv/linux/bits/types/sigevent_t.h
	* sysdeps/unix/sysv/linux/bits/types/siginfo_t.h:
	New system-dependent bits headers.

	* sysdeps/unix/sysv/linux/bits/siginfo-arch.h
	* sysdeps/unix/sysv/linux/bits/siginfo-consts-arch.h
	* sysdeps/unix/sysv/linux/ia64/bits/siginfo-arch.h
	* sysdeps/unix/sysv/linux/ia64/bits/siginfo-consts-arch.h
	* sysdeps/unix/sysv/linux/mips/bits/siginfo-arch.h
	* sysdeps/unix/sysv/linux/sparc/bits/siginfo-arch.h
	* sysdeps/unix/sysv/linux/tile/bits/siginfo-arch.h
	* sysdeps/unix/sysv/linux/tile/bits/siginfo-consts-arch.h
	* sysdeps/unix/sysv/linux/x86/bits/siginfo-arch.h:
	New Linux-only system-dependent bits headers.

	* signal/bits/types/sig_atomic_t.h
	* signal/bits/types/sigset_t.h
	* signal/bits/types/sigval_t.h:
	New non-system-dependent bits headers.

	* sysdeps/generic/sigsetops.h
	* sysdeps/unix/sysv/linux/sigsetops.h:
	New internal headers.

	* include/bits/types/sig_atomic_t.h
	* include/bits/types/sigset_t.h
	* include/bits/types/sigval_t.h:
	New wrappers.

	* signal/sigsetops.h
	* bits/siginfo.h
	* bits/sigset.h
	* sysdeps/unix/sysv/linux/bits/siginfo.h
	* sysdeps/unix/sysv/linux/bits/sigset.h
	* sysdeps/unix/sysv/linux/ia64/bits/siginfo.h
	* sysdeps/unix/sysv/linux/mips/bits/siginfo.h
	* sysdeps/unix/sysv/linux/s390/bits/siginfo.h
	* sysdeps/unix/sysv/linux/sparc/bits/siginfo.h
	* sysdeps/unix/sysv/linux/tile/bits/siginfo.h
	* sysdeps/unix/sysv/linux/x86/bits/siginfo.h:
	Deleted.

	* signal/Makefile, sysdeps/unix/sysv/linux/Makefile:
	Update lists of installed headers.

	* posix/bits/types.h: Define __sig_atomic_t here.
	* signal/signal.h: Use the new bits headers; no need to handle
	__need_sig_atomic_t nor __need_sigset_t.  Don't use __sigmask
	to define sigmask.
	* include/signal.h: No need to handle __need_sig_atomic_t
	nor __need_sigset_t.  Don't define __sigemptyset.

	* io/sys/poll.h, setjmp/setjmp.h
	* sysdeps/arm/sys/ucontext.h, sysdeps/generic/sys/ucontext.h
	* sysdeps/i386/sys/ucontext.h, sysdeps/m68k/sys/ucontext.h
	* sysdeps/mach/hurd/i386/bits/sigcontext.h
	* sysdeps/mips/sys/ucontext.h, sysdeps/powerpc/novmxsetjmp.h
	* sysdeps/pthread/bits/sigthread.h
	* sysdeps/unix/sysv/linux/hppa/sys/ucontext.h
	* sysdeps/unix/sysv/linux/m68k/sys/ucontext.h
	* sysdeps/unix/sysv/linux/mips/sys/ucontext.h
	* sysdeps/unix/sysv/linux/nios2/sys/ucontext.h
	* sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h
	* sysdeps/unix/sysv/linux/s390/sys/ucontext.h
	* sysdeps/unix/sysv/linux/sh/sys/ucontext.h
	* sysdeps/unix/sysv/linux/sparc/sys/ucontext.h
	* sysdeps/unix/sysv/linux/tile/sys/ucontext.h
	* sysdeps/unix/sysv/linux/x86/sys/ucontext.h:
	Use bits/types/__sigset_t.h.

	* misc/sys/select.h, posix/spawn.h
	* sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h
	* sysdeps/unix/sysv/linux/sys/epoll.h
	* sysdeps/unix/sysv/linux/sys/signalfd.h:
	Use bits/types/sigset_t.h.

	* resolv/netdb.h, rt/mqueue.h: Use bits/types/sigevent_t.h.
	* rt/aio.h: Use bits/types/sigevent_t.h and bits/sigevent-consts.h.
	* socket/sys/socket.h: Don't include bits/sigset.h.

	* login/utmp_file.c, shadow/lckpwdf.c, signal/sigandset.c
	* signal/sigisempty.c, stdlib/abort.c, sysdeps/posix/profil.c
	* sysdeps/posix/sigignore.c, sysdeps/posix/sigintr.c
	* sysdeps/posix/signal.c, sysdeps/posix/sigset.c
	* sysdeps/posix/sprofil.c, sysdeps/posix/sysv_signal.c
	* sysdeps/unix/sysv/linux/nptl-signals.h:
	Include sigsetops.h.

	* signal/sigaddset.c, signal/sigandset.c, signal/sigdelset.c
	* signal/sigorset.c, stdlib/abort.c, sysdeps/posix/sigignore.c
	* sysdeps/posix/signal.c, sysdeps/posix/sigset.c:
	__sigaddset, __sigandset, __sigdelset, __sigemptyset, __sigorset
	now return no value.

	* signal/sigaddset.c, signal/sigdelset.c, signal/sigismem.c
	Include <errno.h>, <signal.h>, and <sigsetops.h> instead of
	"sigsetops.h".

	* signal/sigsetops.c: Explicitly define __sigismember,
	__sigaddset, and __sigdelset as compatibility symbols.

	* signal/Versions: Correct commentary on __sigpause,
	__sigaddset, __sigdelset, __sigismember.

	* inet/rcmd.c: Include sigsetops.h.  Convert old code using
	__sigblock/__sigsetmask to use __sigprocmask and friends.

95 files changed, 1192 insertions, 2911 deletions

diff --git a/ChangeLog b/ChangeLog
index 43beed2983..62341b8ed3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,132 @@
 2017-05-20  Zack Weinberg  <zackw@panix.com>
 
+	* bits/sigevent-consts.h
+	* bits/siginfo-consts.h
+	* bits/types/__sigset_t.h
+	* bits/types/sigevent_t.h
+	* bits/types/siginfo_t.h
+	* sysdeps/unix/sysv/linux/bits/sigevent-consts.h
+	* sysdeps/unix/sysv/linux/bits/siginfo-consts.h
+	* sysdeps/unix/sysv/linux/bits/types/__sigset_t.h
+	* sysdeps/unix/sysv/linux/bits/types/sigevent_t.h
+	* sysdeps/unix/sysv/linux/bits/types/siginfo_t.h:
+	New system-dependent bits headers.
+
+	* sysdeps/unix/sysv/linux/bits/siginfo-arch.h
+	* sysdeps/unix/sysv/linux/bits/siginfo-consts-arch.h
+	* sysdeps/unix/sysv/linux/ia64/bits/siginfo-arch.h
+	* sysdeps/unix/sysv/linux/ia64/bits/siginfo-consts-arch.h
+	* sysdeps/unix/sysv/linux/mips/bits/siginfo-arch.h
+	* sysdeps/unix/sysv/linux/sparc/bits/siginfo-arch.h
+	* sysdeps/unix/sysv/linux/tile/bits/siginfo-arch.h
+	* sysdeps/unix/sysv/linux/tile/bits/siginfo-consts-arch.h
+	* sysdeps/unix/sysv/linux/x86/bits/siginfo-arch.h:
+	New Linux-only system-dependent bits headers.
+
+	* signal/bits/types/sig_atomic_t.h
+	* signal/bits/types/sigset_t.h
+	* signal/bits/types/sigval_t.h:
+	New non-system-dependent bits headers.
+
+	* sysdeps/generic/sigsetops.h
+	* sysdeps/unix/sysv/linux/sigsetops.h:
+	New internal headers.
+
+	* include/bits/types/sig_atomic_t.h
+	* include/bits/types/sigset_t.h
+	* include/bits/types/sigval_t.h:
+	New wrappers.
+
+	* signal/sigsetops.h
+	* bits/siginfo.h
+	* bits/sigset.h
+	* sysdeps/unix/sysv/linux/bits/siginfo.h
+	* sysdeps/unix/sysv/linux/bits/sigset.h
+	* sysdeps/unix/sysv/linux/ia64/bits/siginfo.h
+	* sysdeps/unix/sysv/linux/mips/bits/siginfo.h
+	* sysdeps/unix/sysv/linux/s390/bits/siginfo.h
+	* sysdeps/unix/sysv/linux/sparc/bits/siginfo.h
+	* sysdeps/unix/sysv/linux/tile/bits/siginfo.h
+	* sysdeps/unix/sysv/linux/x86/bits/siginfo.h:
+	Deleted.
+
+	* signal/Makefile, sysdeps/unix/sysv/linux/Makefile:
+	Update lists of installed headers.
+
+	* posix/bits/types.h: Define __sig_atomic_t here.
+	* signal/signal.h: Use the new bits headers; no need to handle
+	__need_sig_atomic_t nor __need_sigset_t.  Don't use __sigmask
+	to define sigmask.
+	* include/signal.h: No need to handle __need_sig_atomic_t
+	nor __need_sigset_t.  Don't define __sigemptyset.
+
+	* io/sys/poll.h, setjmp/setjmp.h
+	* sysdeps/arm/sys/ucontext.h, sysdeps/generic/sys/ucontext.h
+	* sysdeps/i386/sys/ucontext.h, sysdeps/m68k/sys/ucontext.h
+	* sysdeps/mach/hurd/i386/bits/sigcontext.h
+	* sysdeps/mips/sys/ucontext.h, sysdeps/powerpc/novmxsetjmp.h
+	* sysdeps/pthread/bits/sigthread.h
+	* sysdeps/unix/sysv/linux/hppa/sys/ucontext.h
+	* sysdeps/unix/sysv/linux/m68k/sys/ucontext.h
+	* sysdeps/unix/sysv/linux/mips/sys/ucontext.h
+	* sysdeps/unix/sysv/linux/nios2/sys/ucontext.h
+	* sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h
+	* sysdeps/unix/sysv/linux/s390/sys/ucontext.h
+	* sysdeps/unix/sysv/linux/sh/sys/ucontext.h
+	* sysdeps/unix/sysv/linux/sparc/sys/ucontext.h
+	* sysdeps/unix/sysv/linux/tile/sys/ucontext.h
+	* sysdeps/unix/sysv/linux/x86/sys/ucontext.h:
+	Use bits/types/__sigset_t.h.
+
+	* misc/sys/select.h, posix/spawn.h
+	* sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h
+	* sysdeps/unix/sysv/linux/sys/epoll.h
+	* sysdeps/unix/sysv/linux/sys/signalfd.h:
+	Use bits/types/sigset_t.h.
+
+	* resolv/netdb.h, rt/mqueue.h: Use bits/types/sigevent_t.h.
+	* rt/aio.h: Use bits/types/sigevent_t.h and bits/sigevent-consts.h.
+	* socket/sys/socket.h: Don't include bits/sigset.h.
+
+	* login/utmp_file.c, shadow/lckpwdf.c, signal/sigandset.c
+	* signal/sigisempty.c, stdlib/abort.c, sysdeps/posix/profil.c
+	* sysdeps/posix/sigignore.c, sysdeps/posix/sigintr.c
+	* sysdeps/posix/signal.c, sysdeps/posix/sigset.c
+	* sysdeps/posix/sprofil.c, sysdeps/posix/sysv_signal.c
+	* sysdeps/unix/sysv/linux/nptl-signals.h:
+	Include sigsetops.h.
+
+	* signal/sigaddset.c, signal/sigandset.c, signal/sigdelset.c
+	* signal/sigorset.c, stdlib/abort.c, sysdeps/posix/sigignore.c
+	* sysdeps/posix/signal.c, sysdeps/posix/sigset.c:
+	__sigaddset, __sigandset, __sigdelset, __sigemptyset, __sigorset
+	now return no value.
+
+	* signal/sigaddset.c, signal/sigdelset.c, signal/sigismem.c
+	Include <errno.h>, <signal.h>, and <sigsetops.h> instead of
+	"sigsetops.h".
+
+	* signal/sigsetops.c: Explicitly define __sigismember,
+	__sigaddset, and __sigdelset as compatibility symbols.
+
+	* signal/Versions: Correct commentary on __sigpause,
+	__sigaddset, __sigdelset, __sigismember.
+
+	* inet/rcmd.c: Include sigsetops.h.  Convert old code using
+	__sigblock/__sigsetmask to use __sigprocmask and friends.
+
+	* resolv/resolv.h: Remove __need_res_state logic.
+	Move definition of res_state and related constants to ...
+	* resolv/bits/types/res_state.h: ...this new file.
+	* resolv/Makefile: Install bits/types/res_state.h.
+	* include/bits/types/res_state.h: New wrapper.
+	* include/list.h: Remove __need_list_t logic.
+	Move definition of list_t to ...
+	* include/list_t.h: ...this new file.
+
+	* nptl/descr.h: Include list_t.h and bits/types/res_state.h
+	instead of list.h and resolv.h.
+
 	* resolv/resolv.h: Remove __need_res_state logic.
 	Move definition of res_state and related constants to ...
 	* resolv/bits/types/res_state.h: ...this new file.
diff --git a/signal/sigsetops.h b/bits/sigevent-consts.h
index cd1282000e..f5940e00ea 100644
--- a/signal/sigsetops.h
+++ b/bits/sigevent-consts.h
@@ -1,4 +1,5 @@
-/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+/* sigevent constants.  Stub version.
+   Copyright (C) 1997-2017 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
@@ -15,18 +16,22 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-/* Definitions relevant to functions that operate on `sigset_t's.  */
+#ifndef _BITS_SIGEVENT_CONSTS_H
+#define _BITS_SIGEVENT_CONSTS_H 1
 
-#include <errno.h>
-#include <signal.h>
-#include <string.h>
+#if !defined _SIGNAL_H && !defined _AIO_H
+#error "Don't include <bits/sigevent-consts.h> directly; use <signal.h> instead."
+#endif
 
-#define	BITS		(_NSIG - 1)
-#define	ELT(signo)	(((signo) - 1) / BITS)
-#define	MASK(signo)	(1 << (((signo) - 1) % BITS))
+/* `sigev_notify' values.  */
+enum
+{
+  SIGEV_SIGNAL = 0,		/* Notify via signal.  */
+# define SIGEV_SIGNAL	SIGEV_SIGNAL
+  SIGEV_NONE,			/* Other notification: meaningless.  */
+# define SIGEV_NONE	SIGEV_NONE
+  SIGEV_THREAD			/* Deliver via thread creation.  */
+# define SIGEV_THREAD	SIGEV_THREAD
+};
 
-#undef	sigemptyset
-#undef	sigfillset
-#undef	sigaddset
-#undef	sigdelset
-#undef	sigismember
+#endif
diff --git a/bits/siginfo.h b/bits/siginfo-consts.h
index 4919df5436..a58ac4bdb7 100644
--- a/bits/siginfo.h
+++ b/bits/siginfo-consts.h
@@ -1,4 +1,4 @@
-/* siginfo_t, sigevent and constants.  Stub version.
+/* siginfo_t constants.  Stub version.
    Copyright (C) 1997-2017 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
@@ -16,42 +16,8 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#if !defined _SIGNAL_H && !defined __need_siginfo_t \
-    && !defined __need_sigevent_t
-# error "Never include this file directly.  Use <signal.h> instead"
-#endif
-
-#if (!defined __have_sigval_t \
-     && (defined _SIGNAL_H || defined __need_siginfo_t \
-	 || defined __need_sigevent_t))
-# define __have_sigval_t 1
-
-/* Type for data associated with a signal.  */
-typedef union sigval
-  {
-    int sival_int;
-    void *sival_ptr;
-  } sigval_t;
-#endif
-
-#if (!defined __have_siginfo_t \
-     && (defined _SIGNAL_H || defined __need_siginfo_t))
-# define __have_siginfo_t	1
-
-typedef struct siginfo
-  {
-    int si_signo;		/* Signal number.  */
-    int si_errno;		/* If non-zero, an errno value associated with
-				   this signal, as defined in <errno.h>.  */
-    int si_code;		/* Signal code.  */
-    __pid_t si_pid;		/* Sending process ID.  */
-    __uid_t si_uid;		/* Real user ID of sending process.  */
-    void *si_addr;		/* Address of faulting instruction.  */
-    int si_status;		/* Exit value or signal.  */
-    long int si_band;		/* Band event for SIGPOLL.  */
-    union sigval si_value;	/* Signal value.  */
-  } siginfo_t;
-
+#ifndef _BITS_SIGINFO_CONSTS_H
+#define _BITS_SIGINFO_CONSTS_H 1
 
 /* Values for `si_code'.  Positive values are reserved for kernel-generated
    signals.  */
@@ -181,36 +147,4 @@ enum
 };
 # endif
 
-# undef __need_siginfo_t
-#endif	/* !have siginfo_t && (have _SIGNAL_H || need siginfo_t).  */
-
-
-#if (defined _SIGNAL_H || defined __need_sigevent_t) \
-    && !defined __have_sigevent_t
-# define __have_sigevent_t	1
-
-/* Structure to transport application-defined values with signals.  */
-# define SIGEV_MAX_SIZE	64
-# define SIGEV_PAD_SIZE	((SIGEV_MAX_SIZE / sizeof (int)) - 3)
-
-typedef struct sigevent
-  {
-    sigval_t sigev_value;
-    int sigev_signo;
-    int sigev_notify;
-    void (*sigev_notify_function) (sigval_t);	    /* Function to start.  */
-    void *sigev_notify_attributes;		    /* Really pthread_attr_t.*/
-  } sigevent_t;
-
-/* `sigev_notify' values.  */
-enum
-{
-  SIGEV_SIGNAL = 0,		/* Notify via signal.  */
-# define SIGEV_SIGNAL	SIGEV_SIGNAL
-  SIGEV_NONE,			/* Other notification: meaningless.  */
-# define SIGEV_NONE	SIGEV_NONE
-  SIGEV_THREAD			/* Deliver via thread creation.  */
-# define SIGEV_THREAD	SIGEV_THREAD
-};
-
-#endif	/* have _SIGNAL_H.  */
+#endif
diff --git a/bits/sigset.h b/bits/sigset.h
deleted file mode 100644
index 4099cc703f..0000000000
--- a/bits/sigset.h
+++ /dev/null
@@ -1,84 +0,0 @@
-/* __sig_atomic_t, __sigset_t, and related definitions.  Generic/BSD version.
-   Copyright (C) 1991-2017 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/>.  */
-
-#ifndef	_SIGSET_H_types
-#define	_SIGSET_H_types	1
-
-typedef int __sig_atomic_t;
-
-/* A `sigset_t' has a bit for each signal.  */
-typedef unsigned long int __sigset_t;
-
-#endif
-
-
-/* We only want to define these functions if <signal.h> was actually
-   included; otherwise we were included just to define the types.  Since we
-   are namespace-clean, it wouldn't hurt to define extra macros.  But
-   trouble can be caused by functions being defined (e.g., any global
-   register vars declared later will cause compilation errors).  */
-
-#if !defined _SIGSET_H_fns && defined _SIGNAL_H
-#define _SIGSET_H_fns 1
-
-#ifndef _EXTERN_INLINE
-# define _EXTERN_INLINE __extern_inline
-#endif
-
-/* Return a mask that includes SIG only.  The cast to `sigset_t' avoids
-   overflow if `sigset_t' is wider than `int'.  */
-#define	__sigmask(sig)	(((__sigset_t) 1) << ((sig) - 1))
-
-#define	__sigemptyset(set)	\
-  (__extension__ ({ *(set) = (__sigset_t) 0; 0; })
-#define	__sigfillset(set)	\
-  (__extension__ ({ *(set) = ~(__sigset_t) 0; 0; }))
-
-#ifdef _GNU_SOURCE
-# define __sigisemptyset(set)	(*(set) == (__sigset_t) 0)
-# define __sigandset(dest, left, right) \
-  (__extension__ ({ *(dest) = *(left) & *(right); 0; }))
-# define __sigorset(dest, left, right) \
-  (__extension__ ({ *(dest) = *(left) | *(right); 0; }))
-#endif
-
-/* These functions needn't check for a bogus signal number -- error
-   checking is done in the non __ versions.  */
-
-extern int __sigismember (const __sigset_t *, int);
-extern int __sigaddset (__sigset_t *, int);
-extern int __sigdelset (__sigset_t *, int);
-
-#ifdef __USE_EXTERN_INLINES
-# define __SIGSETFN(NAME, BODY, CONST)					      \
-  _EXTERN_INLINE int							      \
-  NAME (CONST __sigset_t *__set, int __sig)				      \
-  {									      \
-    __sigset_t __mask = __sigmask (__sig);				      \
-    return BODY;							      \
-  }
-
-__SIGSETFN (__sigismember, (*__set & __mask) ? 1 : 0, const)
-__SIGSETFN (__sigaddset, ((*__set |= __mask), 0), )
-__SIGSETFN (__sigdelset, ((*__set &= ~__mask), 0), )
-
-# undef __SIGSETFN
-#endif
-
-
-#endif /* ! _SIGSET_H_fns.  */
diff --git a/bits/types/__sigset_t.h b/bits/types/__sigset_t.h
new file mode 100644
index 0000000000..c90d760a6e
--- /dev/null
+++ b/bits/types/__sigset_t.h
@@ -0,0 +1,7 @@
+#ifndef ____sigset_t_defined
+#define ____sigset_t_defined 1
+
+/* A `sigset_t' has a bit for each signal.  */
+typedef unsigned long int __sigset_t;
+
+#endif
diff --git a/bits/types/sigevent_t.h b/bits/types/sigevent_t.h
new file mode 100644
index 0000000000..7b8cb054d7
--- /dev/null
+++ b/bits/types/sigevent_t.h
@@ -0,0 +1,17 @@
+#ifndef __sigevent_t_defined
+#define __sigevent_t_defined 1
+
+#include <bits/types.h>
+#include <bits/types/sigval_t.h>
+
+/* Structure to transport application-defined values with signals.  */
+typedef struct sigevent
+  {
+    sigval_t sigev_value;
+    int sigev_signo;
+    int sigev_notify;
+    void (*sigev_notify_function) (sigval_t);	    /* Function to start.  */
+    void *sigev_notify_attributes;		    /* Really pthread_attr_t.*/
+  } sigevent_t;
+
+#endif
diff --git a/bits/types/siginfo_t.h b/bits/types/siginfo_t.h
new file mode 100644
index 0000000000..ab6bf18bec
--- /dev/null
+++ b/bits/types/siginfo_t.h
@@ -0,0 +1,21 @@
+#ifndef __siginfo_t_defined
+#define __siginfo_t_defined 1
+
+#include <bits/types.h>
+#include <bits/types/sigval_t.h>
+
+typedef struct siginfo
+  {
+    int si_signo;		/* Signal number.  */
+    int si_errno;		/* If non-zero, an errno value associated with
+				   this signal, as defined in <errno.h>.  */
+    int si_code;		/* Signal code.  */
+    __pid_t si_pid;		/* Sending process ID.  */
+    __uid_t si_uid;		/* Real user ID of sending process.  */
+    void *si_addr;		/* Address of faulting instruction.  */
+    int si_status;		/* Exit value or signal.  */
+    long int si_band;		/* Band event for SIGPOLL.  */
+    sigval_t si_value;		/* Signal value.  */
+  } siginfo_t;
+
+#endif
diff --git a/include/bits/types/sig_atomic_t.h b/include/bits/types/sig_atomic_t.h
new file mode 100644
index 0000000000..783693f71c
--- /dev/null
+++ b/include/bits/types/sig_atomic_t.h
@@ -0,0 +1 @@
+#include <signal/bits/types/sig_atomic_t.h>
diff --git a/include/bits/types/sigset_t.h b/include/bits/types/sigset_t.h
new file mode 100644
index 0000000000..20c3dc2095
--- /dev/null
+++ b/include/bits/types/sigset_t.h
@@ -0,0 +1 @@
+#include <signal/bits/types/sigset_t.h>
diff --git a/include/bits/types/sigval_t.h b/include/bits/types/sigval_t.h
new file mode 100644
index 0000000000..296734e827
--- /dev/null
+++ b/include/bits/types/sigval_t.h
@@ -0,0 +1 @@
+#include <signal/bits/types/sigval_t.h>
diff --git a/include/signal.h b/include/signal.h
index 276a99d80a..e39ddc60b9 100644
--- a/include/signal.h
+++ b/include/signal.h
@@ -1,7 +1,4 @@
 #ifndef _SIGNAL_H
-#if defined __need_sig_atomic_t || defined __need_sigset_t
-# include <signal/signal.h>
-#else
 # include <signal/signal.h>
 
 # ifndef _ISOMAC
@@ -53,12 +50,6 @@ libc_hidden_proto (__libc_sigaction)
 extern int __default_sigpause (int mask);
 extern int __xpg_sigpause (int sig);
 
-/* Simplified sigemptyset() implementation without the parameter checking.  */
-#undef __sigemptyset
-#define __sigemptyset(ss) \
-  ({ __builtin_memset (ss, '\0', sizeof (sigset_t)); 0; })
-
-
 /* Allocate real-time signal with highest/lowest available priority.  */
 extern int __libc_allocate_rtsig (int __high);
 
@@ -66,6 +57,6 @@ extern int __libc_allocate_rtsig (int __high);
 extern __typeof (__sigaction) __sigaction attribute_hidden;
 extern __typeof (__libc_sigaction) __libc_sigaction attribute_hidden;
 #  endif
-# endif
-#endif
-#endif
+
+# endif /* _ISOMAC */
+#endif /* signal.h */
diff --git a/inet/rcmd.c b/inet/rcmd.c
index c285b9ecd6..e970123a9a 100644
--- a/inet/rcmd.c
+++ b/inet/rcmd.c
@@ -78,6 +78,7 @@
 #include <stdlib.h>
 #include <wchar.h>
 #include <sys/uio.h>
+#include <sigsetops.h>
 
 
 int __ivaliduser (FILE *, u_int32_t, const char *, const char *);
@@ -112,7 +113,8 @@ rcmd_af (char **ahost, u_short rport, const char *locuser, const char *remuser,
 		struct sockaddr_in6 sin6;
 	} from;
 	struct pollfd pfd[2];
-	int32_t oldmask;
+	sigset_t mask, omask;
+
 	pid_t pid;
 	int s, lport, timo, error;
 	char c;
@@ -160,7 +162,9 @@ rcmd_af (char **ahost, u_short rport, const char *locuser, const char *remuser,
 		*ahost = NULL;
 	ai = res;
 	refused = 0;
-	oldmask = __sigblock(sigmask(SIGURG));
+	__sigemptyset(&mask);
+	__sigaddset(&mask, SIGURG);
+	__sigprocmask (SIG_BLOCK, &mask, &omask);
 	for (timo = 1, lport = IPPORT_RESERVED - 1;;) {
 		char errbuf[200];
 
@@ -172,7 +176,7 @@ rcmd: socket: All ports in use\n"));
 			else
 				__fxprintf(NULL, "rcmd: socket: %m\n");
 
-			__sigsetmask(oldmask);
+			__sigprocmask (SIG_SETMASK, &omask, 0);
 			freeaddrinfo(res);
 			return -1;
 		}
@@ -225,7 +229,7 @@ rcmd: socket: All ports in use\n"));
 		freeaddrinfo(res);
 		(void)__fxprintf(NULL, "%s: %s\n", *ahost,
 				 __strerror_r(errno, errbuf, sizeof (errbuf)));
-		__sigsetmask(oldmask);
+		__sigprocmask (SIG_SETMASK, &omask, 0);
 		return -1;
 	}
 	lport--;
@@ -337,7 +341,7 @@ socket: protocol failure in circuit setup\n")) >= 0)
 		}
 		goto bad2;
 	}
-	__sigsetmask(oldmask);
+	__sigprocmask (SIG_SETMASK, &omask, 0);
 	freeaddrinfo(res);
 	return s;
 bad2:
@@ -345,7 +349,7 @@ bad2:
 		(void)__close(*fd2p);
 bad:
 	(void)__close(s);
-	__sigsetmask(oldmask);
+	__sigprocmask (SIG_SETMASK, &omask, 0);
 	freeaddrinfo(res);
 	return -1;
 }
diff --git a/io/sys/poll.h b/io/sys/poll.h
index 7356fb9ea5..e34c2db5a9 100644
--- a/io/sys/poll.h
+++ b/io/sys/poll.h
@@ -24,10 +24,8 @@
 /* Get the platform dependent bits of `poll'.  */
 #include <bits/poll.h>
 #ifdef __USE_GNU
-/* Get the __sigset_t definition.  */
-# include <bits/sigset.h>
-/* Get the timespec definition.  */
-#include <bits/types/struct_timespec.h>
+# include <bits/types/__sigset_t.h>
+# include <bits/types/struct_timespec.h>
 #endif
 
 
diff --git a/login/utmp_file.c b/login/utmp_file.c
index 6ebe1ef123..240e0e3c10 100644
--- a/login/utmp_file.c
+++ b/login/utmp_file.c
@@ -28,6 +28,7 @@
 #include <utmp.h>
 #include <not-cancel.h>
 #include <kernel-features.h>
+#include <sigsetops.h>
 
 #include "utmp-private.h"
 #include "utmp-equal.h"
diff --git a/misc/sys/select.h b/misc/sys/select.h
index e27fb44af8..06dd31b476 100644
--- a/misc/sys/select.h
+++ b/misc/sys/select.h
@@ -29,13 +29,8 @@
 /* Get __FD_* definitions.  */
 #include <bits/select.h>
 
-/* Get __sigset_t.  */
-#include <bits/sigset.h>
-
-#ifndef __sigset_t_defined
-# define __sigset_t_defined
-typedef __sigset_t sigset_t;
-#endif
+/* Get sigset_t.  */
+#include <bits/types/sigset_t.h>
 
 /* Get definition of timer specification structures.  */
 #include <bits/types/time_t.h>
diff --git a/posix/bits/types.h b/posix/bits/types.h
index 7638bd044d..e2f73a89e4 100644
--- a/posix/bits/types.h
+++ b/posix/bits/types.h
@@ -197,6 +197,10 @@ __STD_TYPE __SWORD_TYPE __intptr_t;
 /* Duplicate info from sys/socket.h.  */
 __STD_TYPE __U32_TYPE __socklen_t;
 
+/* C99: An integer type that can be accessed as an atomic entity,
+   even in the presence of asynchronous interrupts.
+   It is not currently necessary for this to be machine-specific.  */
+typedef int __sig_atomic_t;
 
 #undef __STD_TYPE
 
diff --git a/posix/spawn.h b/posix/spawn.h
index a1154a3cdf..2fa5f547c7 100644
--- a/posix/spawn.h
+++ b/posix/spawn.h
@@ -21,9 +21,8 @@
 
 #include <features.h>
 #include <sched.h>
-#define __need_sigset_t
-#include <signal.h>
 #include <sys/types.h>
+#include <bits/types/sigset_t.h>
 
 
 /* Data structure to contain attributes for thread creation.  */
diff --git a/posix/sys/wait.h b/posix/sys/wait.h
index 897bfaed6f..d5b7e4d8d4 100644
--- a/posix/sys/wait.h
+++ b/posix/sys/wait.h
@@ -103,8 +103,7 @@ typedef __id_t id_t;
 #  define __id_t_defined
 # endif
 
-# define __need_siginfo_t
-# include <bits/siginfo.h>
+# include <bits/types/siginfo_t.h>
 
 /* Wait for a childing matching IDTYPE and ID to change the status and
    place appropriate information in *INFOP.
diff --git a/resolv/netdb.h b/resolv/netdb.h
index 936fab95ed..f76ccf123e 100644
--- a/resolv/netdb.h
+++ b/resolv/netdb.h
@@ -33,8 +33,7 @@
 #endif
 
 #ifdef __USE_GNU
-# define __need_sigevent_t
-# include <bits/siginfo.h>
+# include <bits/types/sigevent_t.h>
 # include <bits/types/struct_timespec.h>
 #endif
 
diff --git a/rt/aio.h b/rt/aio.h
index 5647e521f5..d72ad5d97d 100644
--- a/rt/aio.h
+++ b/rt/aio.h
@@ -24,8 +24,8 @@
 
 #include <features.h>
 #include <sys/types.h>
-#define __need_sigevent_t
-#include <bits/siginfo.h>
+#include <bits/types/sigevent_t.h>
+#include <bits/sigevent-consts.h>
 #include <bits/types/struct_timespec.h>
 
 __BEGIN_DECLS
diff --git a/rt/mqueue.h b/rt/mqueue.h
index d65871e3c2..c79aa53b94 100644
--- a/rt/mqueue.h
+++ b/rt/mqueue.h
@@ -21,8 +21,7 @@
 #include <features.h>
 #include <sys/types.h>
 #include <fcntl.h>
-#define __need_sigevent_t
-#include <bits/siginfo.h>
+#include <bits/types/sigevent_t.h>
 #include <bits/types/struct_timespec.h>
 /* Get the definition of mqd_t and struct mq_attr.  */
 #include <bits/mqueue.h>
diff --git a/setjmp/setjmp.h b/setjmp/setjmp.h
index e10adaf1fc..86fb2edf6c 100644
--- a/setjmp/setjmp.h
+++ b/setjmp/setjmp.h
@@ -27,8 +27,7 @@
 __BEGIN_DECLS
 
 #include <bits/setjmp.h>		/* Get `__jmp_buf'.  */
-#include <bits/sigset.h>		/* Get `__sigset_t'.  */
-
+#include <bits/types/__sigset_t.h>
 
 /* Calling environment, plus possibly a saved signal mask.  */
 struct __jmp_buf_tag
diff --git a/shadow/lckpwdf.c b/shadow/lckpwdf.c
index 09427eb233..15602efb68 100644
--- a/shadow/lckpwdf.c
+++ b/shadow/lckpwdf.c
@@ -24,6 +24,7 @@
 #include <string.h>
 #include <unistd.h>
 #include <sys/file.h>
+#include <sigsetops.h>
 
 #include <kernel-features.h>
 
diff --git a/signal/Makefile b/signal/Makefile
index 077aaea6ad..de92558f2c 100644
--- a/signal/Makefile
+++ b/signal/Makefile
@@ -22,10 +22,14 @@ subdir	:= signal
 
 include ../Makeconfig
 
-headers	:= signal.h sys/signal.h bits/signum.h bits/sigcontext.h \
-	   bits/sigaction.h bits/sigset.h bits/siginfo.h bits/sigstack.h \
-	   bits/sigthread.h bits/types/struct_sigstack.h bits/types/stack_t.h \
-	   bits/ss_flags.h
+headers := signal.h sys/signal.h \
+	   bits/signum.h bits/sigcontext.h bits/sigaction.h \
+	   bits/sigevent-consts.h bits/siginfo-consts.h \
+	   bits/sigstack.h bits/sigthread.h bits/ss_flags.h \
+	   bits/types/__sigset_t.h bits/types/sig_atomic_t.h \
+	   bits/types/sigevent_t.h bits/types/siginfo_t.h \
+	   bits/types/sigset_t.h bits/types/stack_t.h \
+	   bits/types/struct_sigstack.h
 
 routines	:= signal raise killpg \
 		   sigaction sigprocmask kill \
diff --git a/signal/Versions b/signal/Versions
index 4d86930ec6..a915ef400f 100644
--- a/signal/Versions
+++ b/signal/Versions
@@ -1,13 +1,13 @@
 libc {
   GLIBC_2.0 {
     # functions with special/multiple interfaces
-    __sigaddset; __sigdelset; __sigismember; __sysv_signal;
+    __sigpause;  __sysv_signal;
 
-    # functions used in inline functions or macros
-    __sigpause;
+    # functions formerly used in inline functions or macros
+    __sigaddset; __sigdelset; __sigismember;
 
     # functions used in other libraries
-     __sigaction;
+    __sigaction;
 
     # b*
     bsd_signal;
diff --git a/signal/bits/types/sig_atomic_t.h b/signal/bits/types/sig_atomic_t.h
new file mode 100644
index 0000000000..47eaa28311
--- /dev/null
+++ b/signal/bits/types/sig_atomic_t.h
@@ -0,0 +1,10 @@
+#ifndef __sig_atomic_t_defined
+#define __sig_atomic_t_defined 1
+
+#include <bits/types.h>
+
+/* An integral type that can be modified atomically, without the
+   possibility of a signal arriving in the middle of the operation.  */
+typedef __sig_atomic_t sig_atomic_t;
+
+#endif
diff --git a/signal/bits/types/sigset_t.h b/signal/bits/types/sigset_t.h
new file mode 100644
index 0000000000..8b27e9112d
--- /dev/null
+++ b/signal/bits/types/sigset_t.h
@@ -0,0 +1,9 @@
+#ifndef __sigset_t_defined
+#define __sigset_t_defined 1
+
+#include <bits/types/__sigset_t.h>
+
+/* A set of signals to be blocked, unblocked, or waited for.  */
+typedef __sigset_t sigset_t;
+
+#endif
diff --git a/signal/bits/types/sigval_t.h b/signal/bits/types/sigval_t.h
new file mode 100644
index 0000000000..666598f0ca
--- /dev/null
+++ b/signal/bits/types/sigval_t.h
@@ -0,0 +1,13 @@
+#ifndef __sigval_t_defined
+#define __sigval_t_defined
+
+/* Type for data associated with a signal.  */
+union sigval
+{
+  int sival_int;
+  void *sival_ptr;
+};
+
+typedef union sigval sigval_t;
+
+#endif
diff --git a/signal/sigaddset.c b/signal/sigaddset.c
index ca280d8e76..161be7b352 100644
--- a/signal/sigaddset.c
+++ b/signal/sigaddset.c
@@ -15,7 +15,9 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#include "sigsetops.h"
+#include <errno.h>
+#include <signal.h>
+#include <sigsetops.h>
 
 /* Add SIGNO to SET.  */
 int
@@ -27,6 +29,7 @@ sigaddset (sigset_t *set, int signo)
       return -1;
     }
 
-  return __sigaddset (set, signo);
+  __sigaddset (set, signo);
+  return 0;
 }
 libc_hidden_def (sigaddset)
diff --git a/signal/sigandset.c b/signal/sigandset.c
index f81a5939ee..ffea141c63 100644
--- a/signal/sigandset.c
+++ b/signal/sigandset.c
@@ -17,18 +17,18 @@
 
 #include <errno.h>
 #include <signal.h>
-#define __need_NULL
-#include <stddef.h>
+#include <sigsetops.h>
 
 /* Combine sets LEFT and RIGHT by logical AND and place result in DEST.  */
 int
 sigandset (sigset_t *dest, const sigset_t *left, const sigset_t *right)
 {
-  if (dest == NULL || left == NULL || right == NULL)
+  if (!dest || !left || !right)
     {
       __set_errno (EINVAL);
       return -1;
     }
 
-  return __sigandset (dest, left, right);
+  __sigandset (dest, left, right);
+  return 0;
 }
diff --git a/signal/sigdelset.c b/signal/sigdelset.c
index 4632103b22..2aaa536937 100644
--- a/signal/sigdelset.c
+++ b/signal/sigdelset.c
@@ -15,7 +15,9 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#include "sigsetops.h"
+#include <errno.h>
+#include <signal.h>
+#include <sigsetops.h>
 
 /* Add SIGNO to SET.  */
 int
@@ -27,6 +29,7 @@ sigdelset (sigset_t *set, int signo)
       return -1;
     }
 
-  return __sigdelset (set, signo);
+  __sigdelset (set, signo);
+  return 0;
 }
 libc_hidden_def (sigdelset)
diff --git a/signal/sigisempty.c b/signal/sigisempty.c
index eabe71ce6b..bea03f1216 100644
--- a/signal/sigisempty.c
+++ b/signal/sigisempty.c
@@ -17,18 +17,17 @@
 
 #include <errno.h>
 #include <signal.h>
-#define __need_NULL
-#include <stddef.h>
+#include <sigsetops.h>
 
 /* Test whether SET is empty.  */
 int
 sigisemptyset (const sigset_t *set)
 {
-  if (set == NULL)
+  if (!set)
     {
       __set_errno (EINVAL);
       return -1;
     }
 
-    return __sigisemptyset (set);
+  return __sigisemptyset (set);
 }
diff --git a/signal/sigismem.c b/signal/sigismem.c
index 8da14ac26d..6ef4a4d19d 100644
--- a/signal/sigismem.c
+++ b/signal/sigismem.c
@@ -15,7 +15,9 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#include "sigsetops.h"
+#include <errno.h>
+#include <signal.h>
+#include <sigsetops.h>
 
 /* Return 1 if SIGNO is in SET, 0 if not.  */
 int
diff --git a/signal/signal.h b/signal/signal.h
index d01df3290a..a51e912d08 100644
--- a/signal/signal.h
+++ b/signal/signal.h
@@ -20,40 +20,21 @@
  */
 
 #ifndef	_SIGNAL_H
-
-#if !defined __need_sig_atomic_t && !defined __need_sigset_t
-# define _SIGNAL_H
-#endif
+#define _SIGNAL_H
 
 #include <features.h>
 
 __BEGIN_DECLS
 
-#include <bits/sigset.h>		/* __sigset_t, __sig_atomic_t.  */
+#include <bits/types.h>
+#include <bits/signum.h>
 
-/* An integral type that can be modified atomically, without the
-   possibility of a signal arriving in the middle of the operation.  */
-#if defined __need_sig_atomic_t || defined _SIGNAL_H
-# ifndef __sig_atomic_t_defined
-#  define __sig_atomic_t_defined
-typedef __sig_atomic_t sig_atomic_t;
-# endif
-# undef __need_sig_atomic_t
-#endif
+#include <bits/types/sig_atomic_t.h>
 
-#if defined __need_sigset_t || (defined _SIGNAL_H && defined __USE_POSIX)
-# ifndef __sigset_t_defined
-#  define __sigset_t_defined
-typedef __sigset_t sigset_t;
-# endif
-# undef __need_sigset_t
+#if defined __USE_POSIX
+#include <bits/types/sigset_t.h>
 #endif
 
-#ifdef _SIGNAL_H
-
-#include <bits/types.h>
-#include <bits/signum.h>
-
 #if defined __USE_XOPEN || defined __USE_XOPEN2K
 # ifndef __pid_t_defined
 typedef __pid_t pid_t;
@@ -73,8 +54,10 @@ typedef __uid_t uid_t;
 #endif
 
 #if defined __USE_POSIX199309 || defined __USE_XOPEN_EXTENDED
-/* Get the `siginfo_t' type plus the needed symbols.  */
-# include <bits/siginfo.h>
+# include <bits/types/siginfo_t.h>
+# include <bits/types/sigevent_t.h>
+# include <bits/siginfo-consts.h>
+# include <bits/sigevent-consts.h>
 #endif
 
 
@@ -174,7 +157,7 @@ extern int __sigpause (int __sig_or_mask, int __is_sig);
    simply do not work in many situations.  Use `sigprocmask' instead.  */
 
 /* Compute mask for signal SIG.  */
-# define sigmask(sig)	__sigmask(sig)
+# define sigmask(sig) ((int)(1u << ((sig) - 1)))
 
 /* Block signals in MASK, returning the old mask.  */
 extern int sigblock (int __mask) __THROW __attribute_deprecated__;
@@ -366,8 +349,6 @@ extern int __libc_current_sigrtmin (void) __THROW;
 /* Return number of available real-time signal with lowest priority.  */
 extern int __libc_current_sigrtmax (void) __THROW;
 
-#endif /* signal.h  */
-
 __END_DECLS
 
 #endif /* not signal.h */
diff --git a/signal/sigorset.c b/signal/sigorset.c
index 9ea867d79d..8a586db6b5 100644
--- a/signal/sigorset.c
+++ b/signal/sigorset.c
@@ -17,18 +17,18 @@
 
 #include <errno.h>
 #include <signal.h>
-#define __need_NULL
-#include <stddef.h>
+#include <sigsetops.h>
 
 /* Combine sets LEFT and RIGHT by logical OR and place result in DEST.  */
 int
 sigorset (sigset_t *dest, const sigset_t *left, const sigset_t *right)
 {
-  if (dest == NULL || left == NULL || right == NULL)
+  if (!dest || !left || !right)
     {
       __set_errno (EINVAL);
       return -1;
     }
 
-  return __sigorset (dest, left, right);
+  __sigorset (dest, left, right);
+  return 0;
 }
diff --git a/signal/sigsetops.c b/signal/sigsetops.c
index 0317662a14..d56412f94b 100644
--- a/signal/sigsetops.c
+++ b/signal/sigsetops.c
@@ -1,11 +1,53 @@
-/* Define the real-function versions of all inline functions
-   defined in signal.h (or bits/sigset.h).  */
+/* Compatibility symbols for old versions of signal.h.
+   Copyright (C) 2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
 
-#include <features.h>
+   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.
 
-#define _EXTERN_INLINE
-#ifndef __USE_EXTERN_INLINES
-# define __USE_EXTERN_INLINES	1
-#endif
+   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 <signal.h>
+#include <sigsetops.h>
+#include <shlib-compat.h>
+
+/* These were formerly defined by <signal.h> as inline functions,
+   so they require out-of-line compatibility definitions.  */
+#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_26)
 
-#include "signal.h"
+int
+attribute_compat_text_section
+(__sigismember) (const __sigset_t *set, int sig)
+{
+  return __sigismember (set, sig);
+}
+compat_symbol (libc, __sigismember, __sigismember, GLIBC_2_0);
+
+int
+attribute_compat_text_section
+(__sigaddset) (__sigset_t *set, int sig)
+{
+  __sigaddset (set, sig);
+  return 0;
+}
+compat_symbol (libc, __sigaddset, __sigaddset, GLIBC_2_0);
+
+int
+attribute_compat_text_section
+(__sigdelset) (__sigset_t *set, int sig)
+{
+  __sigdelset (set, sig);
+  return 0;
+}
+compat_symbol (libc, __sigdelset, __sigdelset, GLIBC_2_0);
+
+#endif
diff --git a/socket/sys/socket.h b/socket/sys/socket.h
index 7af41097bb..bbfde8f602 100644
--- a/socket/sys/socket.h
+++ b/socket/sys/socket.h
@@ -26,11 +26,6 @@ __BEGIN_DECLS
 #include <bits/types/struct_iovec.h>
 #define	__need_size_t
 #include <stddef.h>
-#ifdef __USE_GNU
-/* Get the __sigset_t definition.  */
-# include <bits/sigset.h>
-#endif
-
 
 /* This operating system-specific header file defines the SOCK_*, PF_*,
    AF_*, MSG_*, SOL_*, and SO_* constants, and the `struct sockaddr',
diff --git a/stdlib/abort.c b/stdlib/abort.c
index d30de0b02c..19882f3e3d 100644
--- a/stdlib/abort.c
+++ b/stdlib/abort.c
@@ -21,6 +21,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+#include <sigsetops.h>
 
 /* Try to get a machine dependent instruction which will make the
    program crash.  This is used in case everything else fails.  */
@@ -57,13 +58,13 @@ abort (void)
 
   /* Now it's for sure we are alone.  But recursive calls are possible.  */
 
-  /* Unlock SIGABRT.  */
+  /* Unblock SIGABRT.  */
   if (stage == 0)
     {
       ++stage;
-      if (__sigemptyset (&sigs) == 0 &&
-	  __sigaddset (&sigs, SIGABRT) == 0)
-	__sigprocmask (SIG_UNBLOCK, &sigs, (sigset_t *) NULL);
+      __sigemptyset (&sigs);
+      __sigaddset (&sigs, SIGABRT);
+      __sigprocmask (SIG_UNBLOCK, &sigs, 0);
     }
 
   /* Flush all streams.  We cannot close them now because the user
diff --git a/sysdeps/arm/sys/ucontext.h b/sysdeps/arm/sys/ucontext.h
index 49d60395dd..bbfeb20bb5 100644
--- a/sysdeps/arm/sys/ucontext.h
+++ b/sysdeps/arm/sys/ucontext.h
@@ -25,6 +25,7 @@
 
 /* We need the signal context definitions even if they are not exposed
    by <signal.h>.  */
+#include <bits/types/__sigset_t.h>
 #include <bits/sigcontext.h>
 #include <bits/sigstack.h>
 #include <bits/types/struct_sigstack.h>
diff --git a/sysdeps/generic/sigsetops.h b/sysdeps/generic/sigsetops.h
new file mode 100644
index 0000000000..e8e5553981
--- /dev/null
+++ b/sysdeps/generic/sigsetops.h
@@ -0,0 +1,77 @@
+/* __sigset_t manipulators.  Generic/BSD version.
+   Copyright (C) 1991-2017 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/>.  */
+
+#ifndef _SIGSETOPS_H
+#define _SIGSETOPS_H 1
+
+#include <signal.h>
+
+/* Return a mask that includes SIG only.  The cast to `sigset_t' avoids
+   overflow if `sigset_t' is wider than `int'.  */
+# define __sigmask(sig) (((__sigset_t) 1) << ((sig) - 1))
+
+#define __sigemptyset(set)			\
+  (__extension__ ({				\
+    *(set) = (__sigset_t) 0;			\
+    (void)0;					\
+  }))
+#define __sigfillset(set)			\
+  (__extension__ ({				\
+    *(set) = ~(__sigset_t) 0;			\
+    (void)0;					\
+  }))
+
+# define __sigisemptyset(set)			\
+  (*(set) == (__sigset_t) 0)
+
+# define __sigandset(dest, left, right)		\
+  (__extension__ ({				\
+    *(dest) = *(left) & *(right);		\
+    (void)0;					\
+  }))
+
+# define __sigorset(dest, left, right)		\
+  (__extension__ ({				\
+    *(dest) = *(left) | *(right);		\
+    (void)0;					\
+  }))
+#endif
+
+/* These macros needn't check for a bogus signal number;
+   checking is done in the non-__ versions.  */
+# define __sigismember(set, sig)		\
+  (__extension__ ({				\
+    __sigset_t __mask = __sigmask (sig);	\
+    (set) & __mask ? 1 : 0;			\
+  }))
+
+# define __sigaddset(set, sig)			\
+  (__extension__ ({				\
+    __sigset_t __mask = __sigmask (sig);	\
+    (set) |= __mask;				\
+    (void)0;					\
+  }))
+
+# define __sigdelset(set, sig)			\
+  (__extension__ ({				\
+    __sigset_t __mask = __sigmask (sig);	\
+    (set) &= ~__mask;				\
+    (void)0;					\
+  }))
+
+#endif
diff --git a/sysdeps/generic/sys/ucontext.h b/sysdeps/generic/sys/ucontext.h
index 052c5401cb..a0602a7ad3 100644
--- a/sysdeps/generic/sys/ucontext.h
+++ b/sysdeps/generic/sys/ucontext.h
@@ -27,6 +27,7 @@
 
 /* We need the signal context definitions even if they are not exposed
    by <signal.h>.  */
+#include <bits/types/__sigset_t.h>
 #include <bits/sigcontext.h>
 #include <bits/sigstack.h>
 #include <bits/types/struct_sigstack.h>
diff --git a/sysdeps/i386/sys/ucontext.h b/sysdeps/i386/sys/ucontext.h
index 241f270a99..92deea92ea 100644
--- a/sysdeps/i386/sys/ucontext.h
+++ b/sysdeps/i386/sys/ucontext.h
@@ -25,6 +25,7 @@
 
 /* We need the signal context definitions even if they are not exposed
    by <signal.h>.  */
+#include <bits/types/__sigset_t.h>
 #include <bits/sigcontext.h>
 #include <bits/sigstack.h>
 #include <bits/types/struct_sigstack.h>
diff --git a/sysdeps/m68k/sys/ucontext.h b/sysdeps/m68k/sys/ucontext.h
index 4e5ec3b090..4f185ce63f 100644
--- a/sysdeps/m68k/sys/ucontext.h
+++ b/sysdeps/m68k/sys/ucontext.h
@@ -25,6 +25,7 @@
 
 /* We need the signal context definitions even if they are not exposed
    by <signal.h>.  */
+#include <bits/types/__sigset_t.h>
 #include <bits/sigcontext.h>
 #include <bits/sigstack.h>
 #include <bits/types/struct_sigstack.h>
diff --git a/sysdeps/mach/hurd/i386/bits/sigcontext.h b/sysdeps/mach/hurd/i386/bits/sigcontext.h
index 286b80efbd..3d5a6736aa 100644
--- a/sysdeps/mach/hurd/i386/bits/sigcontext.h
+++ b/sysdeps/mach/hurd/i386/bits/sigcontext.h
@@ -26,6 +26,7 @@
 /* Signal handlers are actually called:
    void handler (int sig, int code, struct sigcontext *scp);  */
 
+#include <bits/types/__sigset_t.h>
 #include <mach/machine/fp_reg.h>
 
 /* State of this thread when the signal was taken.  */
diff --git a/sysdeps/mips/sys/ucontext.h b/sysdeps/mips/sys/ucontext.h
index cb8fbcd3d2..9c6f8f8221 100644
--- a/sysdeps/mips/sys/ucontext.h
+++ b/sysdeps/mips/sys/ucontext.h
@@ -25,6 +25,7 @@
 
 /* We need the signal context definitions even if they are not exposed
    by <signal.h>.  */
+#include <bits/types/__sigset_t.h>
 #include <bits/sigcontext.h>
 #include <bits/sigstack.h>
 #include <bits/types/struct_sigstack.h>
diff --git a/sysdeps/posix/profil.c b/sysdeps/posix/profil.c
index f5b8ee19fc..4d3fbe0b8a 100644
--- a/sysdeps/posix/profil.c
+++ b/sysdeps/posix/profil.c
@@ -22,6 +22,7 @@
 #include <signal.h>
 #include <sys/time.h>
 #include <libc-internal.h>
+#include <sigsetops.h>
 
 #ifndef SIGPROF
 
diff --git a/sysdeps/posix/sigignore.c b/sysdeps/posix/sigignore.c
index e7975739e8..601ae9685a 100644
--- a/sysdeps/posix/sigignore.c
+++ b/sysdeps/posix/sigignore.c
@@ -22,7 +22,7 @@
 #include <stddef.h>
 #include <signal.h>
 #include <string.h>	/* For the real memset prototype.  */
-
+#include <sigsetops.h>
 
 int
 sigignore (int sig)
@@ -30,8 +30,7 @@ sigignore (int sig)
   struct sigaction act;
 
   act.sa_handler = SIG_IGN;
-  if (__sigemptyset (&act.sa_mask) < 0)
-    return -1;
+  __sigemptyset (&act.sa_mask);
   act.sa_flags = 0;
 
   return __sigaction (sig, &act, NULL);
diff --git a/sysdeps/posix/sigintr.c b/sysdeps/posix/sigintr.c
index d02469a8dd..a6202de6a9 100644
--- a/sysdeps/posix/sigintr.c
+++ b/sysdeps/posix/sigintr.c
@@ -18,6 +18,7 @@
 #include <stddef.h>
 #include <signal.h>
 #include <errno.h>
+#include <sigsetops.h>
 
 /* If INTERRUPT is nonzero, make signal SIG interrupt system calls
    (causing them to fail with EINTR); if INTERRUPT is zero, make system
diff --git a/sysdeps/posix/signal.c b/sysdeps/posix/signal.c
index 32db07b519..81ba17745d 100644
--- a/sysdeps/posix/signal.c
+++ b/sysdeps/posix/signal.c
@@ -19,7 +19,7 @@
 #include <errno.h>
 #include <signal.h>
 #include <string.h>	/* For the real memset prototype.  */
-
+#include <sigsetops.h>
 
 sigset_t _sigintr attribute_hidden;		/* Set by siginterrupt.  */
 
@@ -38,9 +38,8 @@ __bsd_signal (int sig, __sighandler_t handler)
     }
 
   act.sa_handler = handler;
-  if (__sigemptyset (&act.sa_mask) < 0
-      || __sigaddset (&act.sa_mask, sig) < 0)
-    return SIG_ERR;
+  __sigemptyset (&act.sa_mask);
+  __sigaddset (&act.sa_mask, sig);
   act.sa_flags = __sigismember (&_sigintr, sig) ? 0 : SA_RESTART;
   if (__sigaction (sig, &act, &oact) < 0)
     return SIG_ERR;
diff --git a/sysdeps/posix/sigset.c b/sysdeps/posix/sigset.c
index 0c2aa76ad4..a4dfe0ae93 100644
--- a/sysdeps/posix/sigset.c
+++ b/sysdeps/posix/sigset.c
@@ -8,7 +8,7 @@
 
    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
+   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
@@ -20,7 +20,7 @@
 #include <stddef.h>
 #include <signal.h>
 #include <string.h>	/* For the real memset prototype.  */
-
+#include <sigsetops.h>
 
 /* Set the disposition for SIG.  */
 __sighandler_t
@@ -31,19 +31,19 @@ sigset (int sig, __sighandler_t disp)
   sigset_t set;
   sigset_t oset;
 
-#ifdef SIG_HOLD
-  /* Handle SIG_HOLD first.  */
-  if (disp == SIG_HOLD)
+  /* Check signal extents to protect __sigismember.  */
+  if (disp == SIG_ERR || sig < 1 || sig >= NSIG)
     {
-      /* Create an empty signal set.  */
-      if (__sigemptyset (&set) < 0)
-	return SIG_ERR;
+      __set_errno (EINVAL);
+      return SIG_ERR;
+    }
 
-      /* Add the specified signal.  */
-      if (__sigaddset (&set, sig) < 0)
-	return SIG_ERR;
+  __sigemptyset (&set);
+  __sigaddset (&set, sig);
 
-      /* Add the signal set to the current signal mask.  */
+  if (disp == SIG_HOLD)
+    {
+      /* Add the signal to the current signal mask.  */
       if (__sigprocmask (SIG_BLOCK, &set, &oset) < 0)
 	return SIG_ERR;
 
@@ -57,34 +57,19 @@ sigset (int sig, __sighandler_t disp)
 
       return oact.sa_handler;
     }
-#endif	/* SIG_HOLD */
-
-  /* Check signal extents to protect __sigismember.  */
-  if (disp == SIG_ERR || sig < 1 || sig >= NSIG)
+  else
     {
-      __set_errno (EINVAL);
-      return SIG_ERR;
-    }
-
-  act.sa_handler = disp;
-  if (__sigemptyset (&act.sa_mask) < 0)
-    return SIG_ERR;
-  act.sa_flags = 0;
-  if (__sigaction (sig, &act, &oact) < 0)
-    return SIG_ERR;
-
-  /* Create an empty signal set.  */
-  if (__sigemptyset (&set) < 0)
-    return SIG_ERR;
-
-  /* Add the specified signal.  */
-  if (__sigaddset (&set, sig) < 0)
-    return SIG_ERR;
+      act.sa_handler = disp;
+      __sigemptyset (&act.sa_mask);
+      act.sa_flags = 0;
+      if (__sigaction (sig, &act, &oact) < 0)
+	return SIG_ERR;
 
-  /* Remove the signal set from the current signal mask.  */
-  if (__sigprocmask (SIG_UNBLOCK, &set, &oset) < 0)
-    return SIG_ERR;
+      /* Remove the signal from the current signal mask.  */
+      if (__sigprocmask (SIG_UNBLOCK, &set, &oset) < 0)
+	return SIG_ERR;
 
-  /* If the signal was already blocked return SIG_HOLD.  */
-  return __sigismember (&oset, sig) ? SIG_HOLD : oact.sa_handler;
+      /* If the signal was already blocked return SIG_HOLD.  */
+      return __sigismember (&oset, sig) ? SIG_HOLD : oact.sa_handler;
+    }
 }
diff --git a/sysdeps/posix/sprofil.c b/sysdeps/posix/sprofil.c
index f72245cb52..f704b9e8f4 100644
--- a/sysdeps/posix/sprofil.c
+++ b/sysdeps/posix/sprofil.c
@@ -21,6 +21,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+#include <sigsetops.h>
 
 #include <sys/time.h>
 #include <sys/profil.h>
diff --git a/sysdeps/posix/sysv_signal.c b/sysdeps/posix/sysv_signal.c
index 6d80803fd5..6893ec23e4 100644
--- a/sysdeps/posix/sysv_signal.c
+++ b/sysdeps/posix/sysv_signal.c
@@ -18,7 +18,7 @@
 #include <errno.h>
 #include <signal.h>
 #include <string.h>	/* For the real memset prototype.  */
-
+#include <sigsetops.h>
 
 /* Tolerate non-threads versions of Posix */
 #ifndef SA_ONESHOT
@@ -46,8 +46,7 @@ __sysv_signal (int sig, __sighandler_t handler)
     }
 
   act.sa_handler = handler;
-  if (__sigemptyset (&act.sa_mask) < 0)
-    return SIG_ERR;
+  __sigemptyset (&act.sa_mask);
   act.sa_flags = SA_ONESHOT | SA_NOMASK | SA_INTERRUPT;
   act.sa_flags &= ~SA_RESTART;
   if (__sigaction (sig, &act, &oact) < 0)
diff --git a/sysdeps/powerpc/novmxsetjmp.h b/sysdeps/powerpc/novmxsetjmp.h
index ed87efff3f..aa76bf9d1e 100644
--- a/sysdeps/powerpc/novmxsetjmp.h
+++ b/sysdeps/powerpc/novmxsetjmp.h
@@ -54,7 +54,7 @@ typedef long int __jmp_buf[40];
 typedef long int __jmp_buf[58];
 # endif
 
-# include <bits/sigset.h>		/* Get `__sigset_t'.  */
+# include <bits/types/__sigset_t.h>
 
 /* Calling environment, plus possibly a saved signal mask.  */
 typedef struct __novmx__jmp_buf_tag
diff --git a/sysdeps/pthread/bits/sigthread.h b/sysdeps/pthread/bits/sigthread.h
index 4302ee41e8..a7a861c9b7 100644
--- a/sysdeps/pthread/bits/sigthread.h
+++ b/sysdeps/pthread/bits/sigthread.h
@@ -24,6 +24,7 @@
 #endif
 
 /* Functions for handling signals. */
+#include <bits/types/__sigset_t.h>
 
 /* Modify the signal mask for the calling thread.  The arguments have
    the same meaning as for sigprocmask(2). */
diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
index fc6b3a9612..99b3f9d346 100644
--- a/sysdeps/unix/sysv/linux/Makefile
+++ b/sysdeps/unix/sysv/linux/Makefile
@@ -45,7 +45,8 @@ sysdep_headers += sys/mount.h sys/acct.h sys/sysctl.h \
 		  sys/timerfd.h sys/fanotify.h bits/eventfd.h bits/inotify.h \
 		  bits/signalfd.h bits/timerfd.h bits/epoll.h \
 		  bits/socket_type.h bits/syscall.h bits/sysctl.h \
-		  bits/mman-linux.h
+		  bits/mman-linux.h \
+		  bits/siginfo-arch.h bits/siginfo-consts-arch.h
 
 tests += tst-clone tst-clone2 tst-fanotify tst-personality tst-quota \
 	 tst-sync_file_range test-errno-linux
diff --git a/sysdeps/unix/sysv/linux/aarch64/sys/ucontext.h b/sysdeps/unix/sysv/linux/aarch64/sys/ucontext.h
index 1a5fa29ce8..597f9eac2f 100644
--- a/sysdeps/unix/sysv/linux/aarch64/sys/ucontext.h
+++ b/sysdeps/unix/sysv/linux/aarch64/sys/ucontext.h
@@ -26,6 +26,7 @@
 
 /* We need the signal context definitions even if they are not exposed
    by <signal.h>.  */
+#include <bits/types/__sigset_t.h>
 #include <bits/sigcontext.h>
 #include <bits/sigstack.h>
 #include <bits/types/struct_sigstack.h>
diff --git a/sysdeps/unix/sysv/linux/alpha/sys/ucontext.h b/sysdeps/unix/sysv/linux/alpha/sys/ucontext.h
index 912c61c841..4491ff7c81 100644
--- a/sysdeps/unix/sysv/linux/alpha/sys/ucontext.h
+++ b/sysdeps/unix/sysv/linux/alpha/sys/ucontext.h
@@ -23,6 +23,7 @@
 
 /* We need the signal context definitions even if they are not exposed
    by <signal.h>.  */
+#include <bits/types/__sigset_t.h>
 #include <bits/sigcontext.h>
 #include <bits/sigstack.h>
 #include <bits/types/struct_sigstack.h>
diff --git a/sysdeps/unix/sysv/linux/arm/sys/ucontext.h b/sysdeps/unix/sysv/linux/arm/sys/ucontext.h
index 8a5ea71a20..d7c7d9ec47 100644
--- a/sysdeps/unix/sysv/linux/arm/sys/ucontext.h
+++ b/sysdeps/unix/sysv/linux/arm/sys/ucontext.h
@@ -25,6 +25,7 @@
 
 /* We need the signal context definitions even if they are not exposed
    by <signal.h>.  */
+#include <bits/types/__sigset_t.h>
 #include <bits/sigcontext.h>
 #include <bits/sigstack.h>
 #include <bits/types/struct_sigstack.h>
diff --git a/sysdeps/unix/sysv/linux/bits/sigevent-consts.h b/sysdeps/unix/sysv/linux/bits/sigevent-consts.h
new file mode 100644
index 0000000000..df3513bde2
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/bits/sigevent-consts.h
@@ -0,0 +1,41 @@
+/* sigevent constants.  Linux version.
+   Copyright (C) 1997-2017 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/>.  */
+
+#ifndef _BITS_SIGEVENT_CONSTS_H
+#define _BITS_SIGEVENT_CONSTS_H 1
+
+#if !defined _SIGNAL_H && !defined _AIO_H
+#error "Don't include <bits/sigevent-consts.h> directly; use <signal.h> instead."
+#endif
+
+/* `sigev_notify' values.  */
+enum
+{
+  SIGEV_SIGNAL = 0,		/* Notify via signal.  */
+# define SIGEV_SIGNAL	SIGEV_SIGNAL
+  SIGEV_NONE,			/* Other notification: meaningless.  */
+# define SIGEV_NONE	SIGEV_NONE
+  SIGEV_THREAD,			/* Deliver via thread creation.  */
+# define SIGEV_THREAD	SIGEV_THREAD
+
+  SIGEV_THREAD_ID = 4		/* Send signal to specific thread.
+				   This is a Linux extension.  */
+#define SIGEV_THREAD_ID	SIGEV_THREAD_ID
+};
+
+#endif
diff --git a/sysdeps/unix/sysv/linux/bits/siginfo-arch.h b/sysdeps/unix/sysv/linux/bits/siginfo-arch.h
new file mode 100644
index 0000000000..00018fa620
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/bits/siginfo-arch.h
@@ -0,0 +1,7 @@
+/* Architecture-specific adjustments to siginfo_t.  */
+#ifndef _BITS_SIGINFO_ARCH_H
+#define _BITS_SIGINFO_ARCH_H 1
+
+/* This architecture has no adjustments to make to siginfo_t.  */
+
+#endif
diff --git a/sysdeps/unix/sysv/linux/bits/siginfo-consts-arch.h b/sysdeps/unix/sysv/linux/bits/siginfo-consts-arch.h
new file mode 100644
index 0000000000..96b4edbccd
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/bits/siginfo-consts-arch.h
@@ -0,0 +1,7 @@
+/* Architecture-specific additional siginfo constants.  */
+#ifndef _BITS_SIGINFO_CONSTS_ARCH_H
+#define _BITS_SIGINFO_CONSTS_ARCH_H 1
+
+/* This architecture has no additional siginfo constants.  */
+
+#endif
diff --git a/sysdeps/unix/sysv/linux/bits/siginfo-consts.h b/sysdeps/unix/sysv/linux/bits/siginfo-consts.h
new file mode 100644
index 0000000000..a7a31bfe5f
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/bits/siginfo-consts.h
@@ -0,0 +1,185 @@
+/* siginfo constants.  Linux version.
+   Copyright (C) 1997-2017 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/>.  */
+
+#ifndef _BITS_SIGINFO_CONSTS_H
+#define _BITS_SIGINFO_CONSTS_H 1
+
+#ifndef _SIGNAL_H
+#error "Don't include <bits/siginfo-consts.h> directly; use <signal.h> instead."
+#endif
+
+/* Most of these constants are uniform across all architectures, but there
+   is one exception.  */
+#define __SI_ASYNCIO_AFTER_SIGIO 1
+#include <bits/siginfo-arch.h>
+
+/* Values for `si_code'.  Positive values are reserved for kernel-generated
+   signals.  */
+enum
+{
+  SI_ASYNCNL = -60,		/* Sent by asynch name lookup completion.  */
+  SI_TKILL = -6,		/* Sent by tkill.  */
+  SI_SIGIO,			/* Sent by queued SIGIO. */
+#if __SI_ASYNCIO_AFTER_SIGIO
+  SI_ASYNCIO,			/* Sent by AIO completion.  */
+  SI_MESGQ,			/* Sent by real time mesq state change.  */
+  SI_TIMER,			/* Sent by timer expiration.  */
+#else
+  SI_MESGQ,
+  SI_TIMER,
+  SI_ASYNCIO,
+#endif
+  SI_QUEUE,			/* Sent by sigqueue.  */
+  SI_USER,			/* Sent by kill, sigsend.  */
+  SI_KERNEL = 0x80		/* Send by kernel.  */
+
+#define SI_ASYNCNL	SI_ASYNCNL
+#define SI_TKILL	SI_TKILL
+#define SI_SIGIO	SI_SIGIO
+#define SI_ASYNCIO	SI_ASYNCIO
+#define SI_MESGQ	SI_MESGQ
+#define SI_TIMER	SI_TIMER
+#define SI_ASYNCIO	SI_ASYNCIO
+#define SI_QUEUE	SI_QUEUE
+#define SI_USER		SI_USER
+#define SI_KERNEL	SI_KERNEL
+};
+
+
+# if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
+/* `si_code' values for SIGILL signal.  */
+enum
+{
+  ILL_ILLOPC = 1,		/* Illegal opcode.  */
+#  define ILL_ILLOPC	ILL_ILLOPC
+  ILL_ILLOPN,			/* Illegal operand.  */
+#  define ILL_ILLOPN	ILL_ILLOPN
+  ILL_ILLADR,			/* Illegal addressing mode.  */
+#  define ILL_ILLADR	ILL_ILLADR
+  ILL_ILLTRP,			/* Illegal trap. */
+#  define ILL_ILLTRP	ILL_ILLTRP
+  ILL_PRVOPC,			/* Privileged opcode.  */
+#  define ILL_PRVOPC	ILL_PRVOPC
+  ILL_PRVREG,			/* Privileged register.  */
+#  define ILL_PRVREG	ILL_PRVREG
+  ILL_COPROC,			/* Coprocessor error.  */
+#  define ILL_COPROC	ILL_COPROC
+  ILL_BADSTK			/* Internal stack error.  */
+#  define ILL_BADSTK	ILL_BADSTK
+};
+
+/* `si_code' values for SIGFPE signal.  */
+enum
+{
+  FPE_INTDIV = 1,		/* Integer divide by zero.  */
+#  define FPE_INTDIV	FPE_INTDIV
+  FPE_INTOVF,			/* Integer overflow.  */
+#  define FPE_INTOVF	FPE_INTOVF
+  FPE_FLTDIV,			/* Floating point divide by zero.  */
+#  define FPE_FLTDIV	FPE_FLTDIV
+  FPE_FLTOVF,			/* Floating point overflow.  */
+#  define FPE_FLTOVF	FPE_FLTOVF
+  FPE_FLTUND,			/* Floating point underflow.  */
+#  define FPE_FLTUND	FPE_FLTUND
+  FPE_FLTRES,			/* Floating point inexact result.  */
+#  define FPE_FLTRES	FPE_FLTRES
+  FPE_FLTINV,			/* Floating point invalid operation.  */
+#  define FPE_FLTINV	FPE_FLTINV
+  FPE_FLTSUB			/* Subscript out of range.  */
+#  define FPE_FLTSUB	FPE_FLTSUB
+};
+
+/* `si_code' values for SIGSEGV signal.  */
+enum
+{
+  SEGV_MAPERR = 1,		/* Address not mapped to object.  */
+#  define SEGV_MAPERR	SEGV_MAPERR
+  SEGV_ACCERR			/* Invalid permissions for mapped object.  */
+#  define SEGV_ACCERR	SEGV_ACCERR
+};
+
+/* `si_code' values for SIGBUS signal.  */
+enum
+{
+  BUS_ADRALN = 1,		/* Invalid address alignment.  */
+#  define BUS_ADRALN	BUS_ADRALN
+  BUS_ADRERR,			/* Non-existant physical address.  */
+#  define BUS_ADRERR	BUS_ADRERR
+  BUS_OBJERR,			/* Object specific hardware error.  */
+#  define BUS_OBJERR	BUS_OBJERR
+  BUS_MCEERR_AR,		/* Hardware memory error: action required.  */
+#  define BUS_MCEERR_AR	BUS_MCEERR_AR
+  BUS_MCEERR_AO			/* Hardware memory error: action optional.  */
+#  define BUS_MCEERR_AO	BUS_MCEERR_AO
+};
+# endif
+
+# ifdef __USE_XOPEN_EXTENDED
+/* `si_code' values for SIGTRAP signal.  */
+enum
+{
+  TRAP_BRKPT = 1,		/* Process breakpoint.  */
+#  define TRAP_BRKPT	TRAP_BRKPT
+  TRAP_TRACE			/* Process trace trap.  */
+#  define TRAP_TRACE	TRAP_TRACE
+};
+# endif
+
+# if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
+/* `si_code' values for SIGCHLD signal.  */
+enum
+{
+  CLD_EXITED = 1,		/* Child has exited.  */
+#  define CLD_EXITED	CLD_EXITED
+  CLD_KILLED,			/* Child was killed.  */
+#  define CLD_KILLED	CLD_KILLED
+  CLD_DUMPED,			/* Child terminated abnormally.  */
+#  define CLD_DUMPED	CLD_DUMPED
+  CLD_TRAPPED,			/* Traced child has trapped.  */
+#  define CLD_TRAPPED	CLD_TRAPPED
+  CLD_STOPPED,			/* Child has stopped.  */
+#  define CLD_STOPPED	CLD_STOPPED
+  CLD_CONTINUED			/* Stopped child has continued.  */
+#  define CLD_CONTINUED	CLD_CONTINUED
+};
+
+/* `si_code' values for SIGPOLL signal.  */
+enum
+{
+  POLL_IN = 1,			/* Data input available.  */
+#  define POLL_IN	POLL_IN
+  POLL_OUT,			/* Output buffers available.  */
+#  define POLL_OUT	POLL_OUT
+  POLL_MSG,			/* Input message available.   */
+#  define POLL_MSG	POLL_MSG
+  POLL_ERR,			/* I/O error.  */
+#  define POLL_ERR	POLL_ERR
+  POLL_PRI,			/* High priority input available.  */
+#  define POLL_PRI	POLL_PRI
+  POLL_HUP			/* Device disconnected.  */
+#  define POLL_HUP	POLL_HUP
+};
+# endif
+
+/* Architectures might also add architecture-specific constants.
+   These are all considered GNU extensions.  */
+#ifdef __USE_GNU
+# include <bits/siginfo-consts-arch.h>
+#endif
+
+#endif
diff --git a/sysdeps/unix/sysv/linux/bits/siginfo.h b/sysdeps/unix/sysv/linux/bits/siginfo.h
deleted file mode 100644
index 7b0d4f62a3..0000000000
--- a/sysdeps/unix/sysv/linux/bits/siginfo.h
+++ /dev/null
@@ -1,341 +0,0 @@
-/* siginfo_t, sigevent and constants.  Linux version.
-   Copyright (C) 1997-2017 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/>.  */
-
-#if !defined _SIGNAL_H && !defined __need_siginfo_t \
-    && !defined __need_sigevent_t
-# error "Never include this file directly.  Use <signal.h> instead"
-#endif
-
-#include <bits/wordsize.h>
-
-#if (!defined __have_sigval_t \
-     && (defined _SIGNAL_H || defined __need_siginfo_t \
-	 || defined __need_sigevent_t))
-# define __have_sigval_t	1
-
-/* Type for data associated with a signal.  */
-typedef union sigval
-  {
-    int sival_int;
-    void *sival_ptr;
-  } sigval_t;
-#endif
-
-#if (!defined __have_siginfo_t \
-     && (defined _SIGNAL_H || defined __need_siginfo_t))
-# define __have_siginfo_t	1
-
-# define __SI_MAX_SIZE     128
-# if __WORDSIZE == 64
-#  define __SI_PAD_SIZE     ((__SI_MAX_SIZE / sizeof (int)) - 4)
-# else
-#  define __SI_PAD_SIZE     ((__SI_MAX_SIZE / sizeof (int)) - 3)
-# endif
-
-typedef struct
-  {
-    int si_signo;		/* Signal number.  */
-    int si_errno;		/* If non-zero, an errno value associated with
-				   this signal, as defined in <errno.h>.  */
-    int si_code;		/* Signal code.  */
-
-    union
-      {
-	int _pad[__SI_PAD_SIZE];
-
-	 /* kill().  */
-	struct
-	  {
-	    __pid_t si_pid;	/* Sending process ID.  */
-	    __uid_t si_uid;	/* Real user ID of sending process.  */
-	  } _kill;
-
-	/* POSIX.1b timers.  */
-	struct
-	  {
-	    int si_tid;		/* Timer ID.  */
-	    int si_overrun;	/* Overrun count.  */
-	    sigval_t si_sigval;	/* Signal value.  */
-	  } _timer;
-
-	/* POSIX.1b signals.  */
-	struct
-	  {
-	    __pid_t si_pid;	/* Sending process ID.  */
-	    __uid_t si_uid;	/* Real user ID of sending process.  */
-	    sigval_t si_sigval;	/* Signal value.  */
-	  } _rt;
-
-	/* SIGCHLD.  */
-	struct
-	  {
-	    __pid_t si_pid;	/* Which child.  */
-	    __uid_t si_uid;	/* Real user ID of sending process.  */
-	    int si_status;	/* Exit value or signal.  */
-	    __clock_t si_utime;
-	    __clock_t si_stime;
-	  } _sigchld;
-
-	/* SIGILL, SIGFPE, SIGSEGV, SIGBUS.  */
-	struct
-	  {
-	    void *si_addr;	/* Faulting insn/memory ref.  */
-	    short int si_addr_lsb;	/* Valid LSB of the reported address.  */
-	  } _sigfault;
-
-	/* SIGPOLL.  */
-	struct
-	  {
-	    long int si_band;	/* Band event for SIGPOLL.  */
-	    int si_fd;
-	  } _sigpoll;
-
-	/* SIGSYS.  */
-	struct
-	  {
-	    void *_call_addr;	/* Calling user insn.  */
-	    int _syscall;	/* Triggering system call number.  */
-	    unsigned int _arch; /* AUDIT_ARCH_* of syscall.  */
-	  } _sigsys;
-      } _sifields;
-  } siginfo_t;
-
-
-/* X/Open requires some more fields with fixed names.  */
-# define si_pid		_sifields._kill.si_pid
-# define si_uid		_sifields._kill.si_uid
-# define si_timerid	_sifields._timer.si_tid
-# define si_overrun	_sifields._timer.si_overrun
-# define si_status	_sifields._sigchld.si_status
-# define si_utime	_sifields._sigchld.si_utime
-# define si_stime	_sifields._sigchld.si_stime
-# define si_value	_sifields._rt.si_sigval
-# define si_int		_sifields._rt.si_sigval.sival_int
-# define si_ptr		_sifields._rt.si_sigval.sival_ptr
-# define si_addr	_sifields._sigfault.si_addr
-# define si_addr_lsb	_sifields._sigfault.si_addr_lsb
-# define si_band	_sifields._sigpoll.si_band
-# define si_fd		_sifields._sigpoll.si_fd
-# define si_call_addr 	_sifields._sigsys._call_addr
-# define si_syscall	_sifields._sigsys._syscall
-# define si_arch	_sifields._sigsys._arch
-
-
-/* Values for `si_code'.  Positive values are reserved for kernel-generated
-   signals.  */
-enum
-{
-  SI_ASYNCNL = -60,		/* Sent by asynch name lookup completion.  */
-# define SI_ASYNCNL	SI_ASYNCNL
-  SI_TKILL = -6,		/* Sent by tkill.  */
-# define SI_TKILL	SI_TKILL
-  SI_SIGIO,			/* Sent by queued SIGIO. */
-# define SI_SIGIO	SI_SIGIO
-  SI_ASYNCIO,			/* Sent by AIO completion.  */
-# define SI_ASYNCIO	SI_ASYNCIO
-  SI_MESGQ,			/* Sent by real time mesq state change.  */
-# define SI_MESGQ	SI_MESGQ
-  SI_TIMER,			/* Sent by timer expiration.  */
-# define SI_TIMER	SI_TIMER
-  SI_QUEUE,			/* Sent by sigqueue.  */
-# define SI_QUEUE	SI_QUEUE
-  SI_USER,			/* Sent by kill, sigsend.  */
-# define SI_USER	SI_USER
-  SI_KERNEL = 0x80		/* Send by kernel.  */
-#define SI_KERNEL	SI_KERNEL
-};
-
-
-# if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
-/* `si_code' values for SIGILL signal.  */
-enum
-{
-  ILL_ILLOPC = 1,		/* Illegal opcode.  */
-#  define ILL_ILLOPC	ILL_ILLOPC
-  ILL_ILLOPN,			/* Illegal operand.  */
-#  define ILL_ILLOPN	ILL_ILLOPN
-  ILL_ILLADR,			/* Illegal addressing mode.  */
-#  define ILL_ILLADR	ILL_ILLADR
-  ILL_ILLTRP,			/* Illegal trap. */
-#  define ILL_ILLTRP	ILL_ILLTRP
-  ILL_PRVOPC,			/* Privileged opcode.  */
-#  define ILL_PRVOPC	ILL_PRVOPC
-  ILL_PRVREG,			/* Privileged register.  */
-#  define ILL_PRVREG	ILL_PRVREG
-  ILL_COPROC,			/* Coprocessor error.  */
-#  define ILL_COPROC	ILL_COPROC
-  ILL_BADSTK			/* Internal stack error.  */
-#  define ILL_BADSTK	ILL_BADSTK
-};
-
-/* `si_code' values for SIGFPE signal.  */
-enum
-{
-  FPE_INTDIV = 1,		/* Integer divide by zero.  */
-#  define FPE_INTDIV	FPE_INTDIV
-  FPE_INTOVF,			/* Integer overflow.  */
-#  define FPE_INTOVF	FPE_INTOVF
-  FPE_FLTDIV,			/* Floating point divide by zero.  */
-#  define FPE_FLTDIV	FPE_FLTDIV
-  FPE_FLTOVF,			/* Floating point overflow.  */
-#  define FPE_FLTOVF	FPE_FLTOVF
-  FPE_FLTUND,			/* Floating point underflow.  */
-#  define FPE_FLTUND	FPE_FLTUND
-  FPE_FLTRES,			/* Floating point inexact result.  */
-#  define FPE_FLTRES	FPE_FLTRES
-  FPE_FLTINV,			/* Floating point invalid operation.  */
-#  define FPE_FLTINV	FPE_FLTINV
-  FPE_FLTSUB			/* Subscript out of range.  */
-#  define FPE_FLTSUB	FPE_FLTSUB
-};
-
-/* `si_code' values for SIGSEGV signal.  */
-enum
-{
-  SEGV_MAPERR = 1,		/* Address not mapped to object.  */
-#  define SEGV_MAPERR	SEGV_MAPERR
-  SEGV_ACCERR			/* Invalid permissions for mapped object.  */
-#  define SEGV_ACCERR	SEGV_ACCERR
-};
-
-/* `si_code' values for SIGBUS signal.  */
-enum
-{
-  BUS_ADRALN = 1,		/* Invalid address alignment.  */
-#  define BUS_ADRALN	BUS_ADRALN
-  BUS_ADRERR,			/* Non-existant physical address.  */
-#  define BUS_ADRERR	BUS_ADRERR
-  BUS_OBJERR,			/* Object specific hardware error.  */
-#  define BUS_OBJERR	BUS_OBJERR
-  BUS_MCEERR_AR,		/* Hardware memory error: action required.  */
-#  define BUS_MCEERR_AR	BUS_MCEERR_AR
-  BUS_MCEERR_AO			/* Hardware memory error: action optional.  */
-#  define BUS_MCEERR_AO	BUS_MCEERR_AO
-};
-# endif
-
-# ifdef __USE_XOPEN_EXTENDED
-/* `si_code' values for SIGTRAP signal.  */
-enum
-{
-  TRAP_BRKPT = 1,		/* Process breakpoint.  */
-#  define TRAP_BRKPT	TRAP_BRKPT
-  TRAP_TRACE			/* Process trace trap.  */
-#  define TRAP_TRACE	TRAP_TRACE
-};
-# endif
-
-# if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
-/* `si_code' values for SIGCHLD signal.  */
-enum
-{
-  CLD_EXITED = 1,		/* Child has exited.  */
-#  define CLD_EXITED	CLD_EXITED
-  CLD_KILLED,			/* Child was killed.  */
-#  define CLD_KILLED	CLD_KILLED
-  CLD_DUMPED,			/* Child terminated abnormally.  */
-#  define CLD_DUMPED	CLD_DUMPED
-  CLD_TRAPPED,			/* Traced child has trapped.  */
-#  define CLD_TRAPPED	CLD_TRAPPED
-  CLD_STOPPED,			/* Child has stopped.  */
-#  define CLD_STOPPED	CLD_STOPPED
-  CLD_CONTINUED			/* Stopped child has continued.  */
-#  define CLD_CONTINUED	CLD_CONTINUED
-};
-
-/* `si_code' values for SIGPOLL signal.  */
-enum
-{
-  POLL_IN = 1,			/* Data input available.  */
-#  define POLL_IN	POLL_IN
-  POLL_OUT,			/* Output buffers available.  */
-#  define POLL_OUT	POLL_OUT
-  POLL_MSG,			/* Input message available.   */
-#  define POLL_MSG	POLL_MSG
-  POLL_ERR,			/* I/O error.  */
-#  define POLL_ERR	POLL_ERR
-  POLL_PRI,			/* High priority input available.  */
-#  define POLL_PRI	POLL_PRI
-  POLL_HUP			/* Device disconnected.  */
-#  define POLL_HUP	POLL_HUP
-};
-# endif
-
-# undef __need_siginfo_t
-#endif	/* !have siginfo_t && (have _SIGNAL_H || need siginfo_t).  */
-
-
-#if (defined _SIGNAL_H || defined __need_sigevent_t) \
-    && !defined __have_sigevent_t
-# define __have_sigevent_t	1
-
-/* Structure to transport application-defined values with signals.  */
-# define __SIGEV_MAX_SIZE	64
-# if __WORDSIZE == 64
-#  define __SIGEV_PAD_SIZE	((__SIGEV_MAX_SIZE / sizeof (int)) - 4)
-# else
-#  define __SIGEV_PAD_SIZE	((__SIGEV_MAX_SIZE / sizeof (int)) - 3)
-# endif
-
-/* Forward declaration.  */
-# ifndef __have_pthread_attr_t
-typedef union pthread_attr_t pthread_attr_t;
-#  define __have_pthread_attr_t	1
-# endif
-
-typedef struct sigevent
-  {
-    sigval_t sigev_value;
-    int sigev_signo;
-    int sigev_notify;
-
-    union
-      {
-	int _pad[__SIGEV_PAD_SIZE];
-
-	/* When SIGEV_SIGNAL and SIGEV_THREAD_ID set, LWP ID of the
-	   thread to receive the signal.  */
-	__pid_t _tid;
-
-	struct
-	  {
-	    void (*_function) (sigval_t);	/* Function to start.  */
-	    pthread_attr_t *_attribute;		/* Thread attributes.  */
-	  } _sigev_thread;
-      } _sigev_un;
-  } sigevent_t;
-
-/* POSIX names to access some of the members.  */
-# define sigev_notify_function   _sigev_un._sigev_thread._function
-# define sigev_notify_attributes _sigev_un._sigev_thread._attribute
-
-/* `sigev_notify' values.  */
-enum
-{
-  SIGEV_SIGNAL = 0,		/* Notify via signal.  */
-# define SIGEV_SIGNAL	SIGEV_SIGNAL
-  SIGEV_NONE,			/* Other notification: meaningless.  */
-# define SIGEV_NONE	SIGEV_NONE
-  SIGEV_THREAD,			/* Deliver via thread creation.  */
-# define SIGEV_THREAD	SIGEV_THREAD
-
-  SIGEV_THREAD_ID = 4		/* Send signal to specific thread.  */
-#define SIGEV_THREAD_ID	SIGEV_THREAD_ID
-};
-
-#endif	/* have _SIGNAL_H.  */
diff --git a/sysdeps/unix/sysv/linux/bits/sigset.h b/sysdeps/unix/sysv/linux/bits/sigset.h
deleted file mode 100644
index 4b2916f3d9..0000000000
--- a/sysdeps/unix/sysv/linux/bits/sigset.h
+++ /dev/null
@@ -1,124 +0,0 @@
-/* __sig_atomic_t, __sigset_t, and related definitions.  Linux version.
-   Copyright (C) 1991-2017 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/>.  */
-
-#ifndef	_SIGSET_H_types
-# define _SIGSET_H_types	1
-
-typedef int __sig_atomic_t;
-
-/* A `sigset_t' has a bit for each signal.  */
-
-# define _SIGSET_NWORDS	(1024 / (8 * sizeof (unsigned long int)))
-typedef struct
-  {
-    unsigned long int __val[_SIGSET_NWORDS];
-  } __sigset_t;
-
-#endif
-
-
-/* We only want to define these functions if <signal.h> was actually
-   included; otherwise we were included just to define the types.  Since we
-   are namespace-clean, it wouldn't hurt to define extra macros.  But
-   trouble can be caused by functions being defined (e.g., any global
-   register vars declared later will cause compilation errors).  */
-
-#if !defined _SIGSET_H_fns && defined _SIGNAL_H
-# define _SIGSET_H_fns 1
-
-# ifndef _EXTERN_INLINE
-#  define _EXTERN_INLINE __extern_inline
-# endif
-
-/* Return a mask that includes the bit for SIG only.  */
-# define __sigmask(sig) \
-  (((unsigned long int) 1) << (((sig) - 1) % (8 * sizeof (unsigned long int))))
-
-/* Return the word index for SIG.  */
-# define __sigword(sig)	(((sig) - 1) / (8 * sizeof (unsigned long int)))
-
-# if defined __GNUC__ && __GNUC__ >= 2
-#  define __sigemptyset(set) \
-  (__extension__ ({ int __cnt = _SIGSET_NWORDS;				      \
-		    sigset_t *__set = (set);				      \
-		    while (--__cnt >= 0) __set->__val[__cnt] = 0;	      \
-		    0; }))
-#  define __sigfillset(set) \
-  (__extension__ ({ int __cnt = _SIGSET_NWORDS;				      \
-		    sigset_t *__set = (set);				      \
-		    while (--__cnt >= 0) __set->__val[__cnt] = ~0UL;	      \
-		    0; }))
-
-#  ifdef __USE_GNU
-/* The POSIX does not specify for handling the whole signal set in one
-   command.  This is often wanted and so we define three more functions
-   here.  */
-#   define __sigisemptyset(set) \
-  (__extension__ ({ int __cnt = _SIGSET_NWORDS;				      \
-		    const sigset_t *__set = (set);			      \
-		    int __ret = __set->__val[--__cnt];			      \
-		    while (!__ret && --__cnt >= 0)			      \
-			__ret = __set->__val[__cnt];			      \
-		    __ret == 0; }))
-#   define __sigandset(dest, left, right) \
-  (__extension__ ({ int __cnt = _SIGSET_NWORDS;				      \
-		    sigset_t *__dest = (dest);				      \
-		    const sigset_t *__left = (left);			      \
-		    const sigset_t *__right = (right);			      \
-		    while (--__cnt >= 0)				      \
-		      __dest->__val[__cnt] = (__left->__val[__cnt]	      \
-					      & __right->__val[__cnt]);	      \
-		    0; }))
-#   define __sigorset(dest, left, right) \
-  (__extension__ ({ int __cnt = _SIGSET_NWORDS;				      \
-		    sigset_t *__dest = (dest);				      \
-		    const sigset_t *__left = (left);			      \
-		    const sigset_t *__right = (right);			      \
-		    while (--__cnt >= 0)				      \
-		      __dest->__val[__cnt] = (__left->__val[__cnt]	      \
-					      | __right->__val[__cnt]);	      \
-		    0; }))
-#  endif
-# endif
-
-/* These functions needn't check for a bogus signal number -- error
-   checking is done in the non __ versions.  */
-
-extern int __sigismember (const __sigset_t *, int);
-extern int __sigaddset (__sigset_t *, int);
-extern int __sigdelset (__sigset_t *, int);
-
-# ifdef __USE_EXTERN_INLINES
-#  define __SIGSETFN(NAME, BODY, CONST)					      \
-  _EXTERN_INLINE int							      \
-  NAME (CONST __sigset_t *__set, int __sig)				      \
-  {									      \
-    unsigned long int __mask = __sigmask (__sig);			      \
-    unsigned long int __word = __sigword (__sig);			      \
-    return BODY;							      \
-  }
-
-__SIGSETFN (__sigismember, (__set->__val[__word] & __mask) ? 1 : 0, const)
-__SIGSETFN (__sigaddset, ((__set->__val[__word] |= __mask), 0), )
-__SIGSETFN (__sigdelset, ((__set->__val[__word] &= ~__mask), 0), )
-
-#  undef __SIGSETFN
-# endif
-
-
-#endif /* ! _SIGSET_H_fns.  */
diff --git a/sysdeps/unix/sysv/linux/bits/types/__sigset_t.h b/sysdeps/unix/sysv/linux/bits/types/__sigset_t.h
new file mode 100644
index 0000000000..e2f18acf30
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/bits/types/__sigset_t.h
@@ -0,0 +1,10 @@
+#ifndef ____sigset_t_defined
+#define ____sigset_t_defined
+
+#define _SIGSET_NWORDS (1024 / (8 * sizeof (unsigned long int)))
+typedef struct
+{
+  unsigned long int __val[_SIGSET_NWORDS];
+} __sigset_t;
+
+#endif
diff --git a/sysdeps/unix/sysv/linux/bits/types/sigevent_t.h b/sysdeps/unix/sysv/linux/bits/types/sigevent_t.h
new file mode 100644
index 0000000000..0d4857b16e
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/bits/types/sigevent_t.h
@@ -0,0 +1,48 @@
+#ifndef __sigevent_t_defined
+#define __sigevent_t_defined 1
+
+#include <bits/wordsize.h>
+#include <bits/types.h>
+#include <bits/types/sigval_t.h>
+
+#define __SIGEV_MAX_SIZE	64
+#if __WORDSIZE == 64
+# define __SIGEV_PAD_SIZE	((__SIGEV_MAX_SIZE / sizeof (int)) - 4)
+#else
+# define __SIGEV_PAD_SIZE	((__SIGEV_MAX_SIZE / sizeof (int)) - 3)
+#endif
+
+/* Forward declaration.  */
+#ifndef __have_pthread_attr_t
+typedef union pthread_attr_t pthread_attr_t;
+# define __have_pthread_attr_t	1
+#endif
+
+/* Structure to transport application-defined values with signals.  */
+typedef struct sigevent
+  {
+    sigval_t sigev_value;
+    int sigev_signo;
+    int sigev_notify;
+
+    union
+      {
+	int _pad[__SIGEV_PAD_SIZE];
+
+	/* When SIGEV_SIGNAL and SIGEV_THREAD_ID set, LWP ID of the
+	   thread to receive the signal.  */
+	__pid_t _tid;
+
+	struct
+	  {
+	    void (*_function) (sigval_t);	/* Function to start.  */
+	    pthread_attr_t *_attribute;		/* Thread attributes.  */
+	  } _sigev_thread;
+      } _sigev_un;
+  } sigevent_t;
+
+/* POSIX names to access some of the members.  */
+#define sigev_notify_function   _sigev_un._sigev_thread._function
+#define sigev_notify_attributes _sigev_un._sigev_thread._attribute
+
+#endif
diff --git a/sysdeps/unix/sysv/linux/bits/types/siginfo_t.h b/sysdeps/unix/sysv/linux/bits/types/siginfo_t.h
new file mode 100644
index 0000000000..1bb6da5264
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/bits/types/siginfo_t.h
@@ -0,0 +1,139 @@
+#ifndef __siginfo_t_defined
+#define __siginfo_t_defined 1
+
+#include <bits/wordsize.h>
+#include <bits/types.h>
+#include <bits/types/sigval_t.h>
+
+#define __SI_MAX_SIZE	128
+#if __WORDSIZE == 64
+# define __SI_PAD_SIZE	((__SI_MAX_SIZE / sizeof (int)) - 4)
+#else
+# define __SI_PAD_SIZE	((__SI_MAX_SIZE / sizeof (int)) - 3)
+#endif
+
+/* Some fields of siginfo_t have architecture-specific variations.  */
+#define __SI_ALIGNMENT		/* nothing */
+#define __SI_BAND_TYPE		long int
+#define __SI_CLOCK_T		__clock_t
+#define __SI_ERRNO_THEN_CODE	1
+#define __SI_HAVE_SIGSYS	1
+#define __SI_SIGFAULT_ADDL	/* nothing */
+#include <bits/siginfo-arch.h>
+
+typedef struct
+  {
+    int si_signo;		/* Signal number.  */
+#if __SI_ERRNO_THEN_CODE
+    int si_errno;		/* If non-zero, an errno value associated with
+				   this signal, as defined in <errno.h>.  */
+    int si_code;		/* Signal code.  */
+#else
+    int si_code;
+    int si_errno;
+#endif
+#if __WORDSIZE == 64
+    int __pad0;			/* Explicit padding.  */
+#endif
+
+    union
+      {
+	int _pad[__SI_PAD_SIZE];
+
+	 /* kill().  */
+	struct
+	  {
+	    __pid_t si_pid;	/* Sending process ID.  */
+	    __uid_t si_uid;	/* Real user ID of sending process.  */
+	  } _kill;
+
+	/* POSIX.1b timers.  */
+	struct
+	  {
+	    int si_tid;		/* Timer ID.  */
+	    int si_overrun;	/* Overrun count.  */
+	    sigval_t si_sigval;	/* Signal value.  */
+	  } _timer;
+
+	/* POSIX.1b signals.  */
+	struct
+	  {
+	    __pid_t si_pid;	/* Sending process ID.  */
+	    __uid_t si_uid;	/* Real user ID of sending process.  */
+	    sigval_t si_sigval;	/* Signal value.  */
+	  } _rt;
+
+	/* SIGCHLD.  */
+	struct
+	  {
+	    __pid_t si_pid;	/* Which child.	 */
+	    __uid_t si_uid;	/* Real user ID of sending process.  */
+	    int si_status;	/* Exit value or signal.  */
+	    __SI_CLOCK_T si_utime;
+	    __SI_CLOCK_T si_stime;
+	  } _sigchld;
+
+	/* SIGILL, SIGFPE, SIGSEGV, SIGBUS.  */
+	struct
+	  {
+	    void *si_addr;	    /* Faulting insn/memory ref.  */
+	    __SI_SIGFAULT_ADDL
+	    short int si_addr_lsb;  /* Valid LSB of the reported address.  */
+	    union
+	      {
+		/* used when si_code=SEGV_BNDERR */
+		struct
+		  {
+		    void *_lower;
+		    void *_upper;
+		  } _addr_bnd;
+		/* used when si_code=SEGV_PKUERR */
+		__uint32_t _pkey;
+	      } _bounds;
+	  } _sigfault;
+
+	/* SIGPOLL.  */
+	struct
+	  {
+	    long int si_band;	/* Band event for SIGPOLL.  */
+	    int si_fd;
+	  } _sigpoll;
+
+	/* SIGSYS.  */
+#if __SI_HAVE_SIGSYS
+	struct
+	  {
+	    void *_call_addr;	/* Calling user insn.  */
+	    int _syscall;	/* Triggering system call number.  */
+	    unsigned int _arch; /* AUDIT_ARCH_* of syscall.  */
+	  } _sigsys;
+#endif
+      } _sifields;
+  } siginfo_t __SI_ALIGNMENT;
+
+
+/* X/Open requires some more fields with fixed names.  */
+#define si_pid		_sifields._kill.si_pid
+#define si_uid		_sifields._kill.si_uid
+#define si_timerid	_sifields._timer.si_tid
+#define si_overrun	_sifields._timer.si_overrun
+#define si_status	_sifields._sigchld.si_status
+#define si_utime	_sifields._sigchld.si_utime
+#define si_stime	_sifields._sigchld.si_stime
+#define si_value	_sifields._rt.si_sigval
+#define si_int		_sifields._rt.si_sigval.sival_int
+#define si_ptr		_sifields._rt.si_sigval.sival_ptr
+#define si_addr		_sifields._sigfault.si_addr
+#define si_addr_lsb	_sifields._sigfault.si_addr_lsb
+#define si_lower	_sifields._sigfault._bounds._addr_bnd._lower
+#define si_upper	_sifields._sigfault._bounds._addr_bnd._upper
+#define si_pkey		_sifields._sigfault._bounds._pkey
+#define si_band		_sifields._sigpoll.si_band
+#define si_fd		_sifields._sigpoll.si_fd
+#if __SI_HAVE_SIGSYS
+# define si_call_addr	_sifields._sigsys._call_addr
+# define si_syscall	_sifields._sigsys._syscall
+# define si_arch	_sifields._sigsys._arch
+#endif
+
+#endif
diff --git a/sysdeps/unix/sysv/linux/hppa/sys/ucontext.h b/sysdeps/unix/sysv/linux/hppa/sys/ucontext.h
index 50e585d163..79b99ff6a2 100644
--- a/sysdeps/unix/sysv/linux/hppa/sys/ucontext.h
+++ b/sysdeps/unix/sysv/linux/hppa/sys/ucontext.h
@@ -25,6 +25,7 @@
 
 /* We need the signal context definitions even if they are not exposed
    by <signal.h>.  */
+#include <bits/types/__sigset_t.h>
 #include <bits/sigcontext.h>
 #include <bits/sigstack.h>
 #include <bits/types/struct_sigstack.h>
diff --git a/sysdeps/unix/sysv/linux/ia64/bits/siginfo-arch.h b/sysdeps/unix/sysv/linux/ia64/bits/siginfo-arch.h
new file mode 100644
index 0000000000..f824adb77a
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/ia64/bits/siginfo-arch.h
@@ -0,0 +1,19 @@
+/* Architecture-specific adjustments to siginfo_t.  ia64 version.  */
+#ifndef _BITS_SIGINFO_ARCH_H
+
+#undef __SI_HAVE_SIGSYS
+#define __SI_HAVE_SIGSYS 0
+
+#undef __SI_SIGFAULT_ADDL
+#define __SI_SIGFAULT_ADDL			\
+  int _si_imm;					\
+  unsigned int _si_flags;			\
+  unsigned long int _si_isr;
+
+#ifdef __USE_GNU
+# define si_imm		_sifields._sigfault._si_imm
+# define si_segvflags	_sifields._sigfault._si_flags
+# define si_isr		_sifields._sigfault._si_isr
+#endif
+
+#endif
diff --git a/sysdeps/unix/sysv/linux/ia64/bits/siginfo-consts-arch.h b/sysdeps/unix/sysv/linux/ia64/bits/siginfo-consts-arch.h
new file mode 100644
index 0000000000..4c5c4da516
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/ia64/bits/siginfo-consts-arch.h
@@ -0,0 +1,45 @@
+/* Architecture-specific additional siginfo constants.  ia64 version.  */
+#ifndef _BITS_SIGINFO_CONSTS_ARCH_H
+#define _BITS_SIGINFO_CONSTS_ARCH_H 1
+
+/* `si_code' values for SIGILL signal.  */
+enum
+{
+  ILL_BADIADDR = ILL_BADSTK + 1, /* Unimplemented instruction address. */
+#define ILL_BADIADDR ILL_BADIADDR
+  ILL_BREAK
+#define ILL_BREAK ILL_BREAK
+};
+
+/* `si_code' values for SIGFPE signal.  */
+enum
+{
+   FPE_DECOVF   = FPE_FLTSUB + 1,
+#define FPE_DECOVF  FPE_DECOVF
+   FPE_DECDIV,
+#define FPE_DECDIV  FPE_DECDIV
+   FPE_DECERR,
+#define FPE_DECERR  FPE_DECERR
+   FPE_INVASC,
+#define FPE_INVASC  FPE_INVASC
+   FPE_INVDEC
+#define FPE_INVDEC  FPE_INVDEC
+};
+
+/* `si_code' values for SIGSEGV signal.  */
+enum
+{
+  SEGV_PSTKOVF = SEGV_ACCERR + 1
+#define SEGV_PSTKOVF SEGV_PSTKOVF
+};
+
+/* `si_code' values for SIGTRAP signal.  */
+enum
+{
+  TRAP_BRANCH = TRAP_TRACE + 1,
+#define TRAP_BRANCH TRAP_BRANCH
+  TRAP_HWBKPT
+#define TRAP_HWBKPT TRAP_HWBKPT
+};
+
+#endif
diff --git a/sysdeps/unix/sysv/linux/ia64/bits/siginfo.h b/sysdeps/unix/sysv/linux/ia64/bits/siginfo.h
deleted file mode 100644
index b2a7338824..0000000000
--- a/sysdeps/unix/sysv/linux/ia64/bits/siginfo.h
+++ /dev/null
@@ -1,360 +0,0 @@
-/* siginfo_t, sigevent and constants.  Linux/ia64 version.
-   Copyright (C) 2000-2017 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by David Mosberger-Tang <davidm@hpl.hp.com>.
-
-   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/>.  */
-
-#if !defined _SIGNAL_H && !defined __need_siginfo_t \
-    && !defined __need_sigevent_t
-# error "Never include this file directly.  Use <signal.h> instead"
-#endif
-
-#if (!defined __have_sigval_t \
-     && (defined _SIGNAL_H || defined __need_siginfo_t \
-	 || defined __need_sigevent_t))
-# define __have_sigval_t	1
-
-/* Type for data associated with a signal.  */
-typedef union sigval
-  {
-    int sival_int;
-    void *sival_ptr;
-  } sigval_t;
-#endif
-
-#if (!defined __have_siginfo_t \
-     && (defined _SIGNAL_H || defined __need_siginfo_t))
-# define __have_siginfo_t	1
-
-# define __SI_MAX_SIZE     128
-# define __SI_PAD_SIZE     ((__SI_MAX_SIZE / sizeof (int)) - 4)
-
-typedef struct
-  {
-    int si_signo;		/* Signal number.  */
-    int si_errno;		/* If non-zero, an errno value associated with
-				   this signal, as defined in <errno.h>.  */
-    int si_code;		/* Signal code.  */
-    int __pad0;			/* Explicit padding.  */
-
-    union
-      {
-	int _pad[__SI_PAD_SIZE];
-
-	 /* kill().  */
-	struct
-	  {
-	    __pid_t si_pid;	/* Sending process ID.  */
-	    __uid_t si_uid;	/* Real user ID of sending process.  */
-	  } _kill;
-
-	/* POSIX.1b timers.  */
-	struct
-	  {
-	    int si_tid;		/* Timer ID.  */
-	    int si_overrun;	/* Overrun count.  */
-	    sigval_t si_sigval;	/* Signal value.  */
-	  } _timer;
-
-	/* POSIX.1b signals.  */
-	struct
-	  {
-	    __pid_t si_pid;	/* Sending process ID.  */
-	    __uid_t si_uid;	/* Real user ID of sending process.  */
-	    sigval_t si_sigval;	/* Signal value.  */
-	  } _rt;
-
-	/* SIGCHLD.  */
-	struct
-	  {
-	    __pid_t si_pid;	/* Which child.  */
-	    __uid_t si_uid;	/* Real user ID of sending process.  */
-	    int si_status;	/* Exit value or signal.  */
-	    __clock_t si_utime;
-	    __clock_t si_stime;
-	  } _sigchld;
-
-	/* SIGILL, SIGFPE, SIGSEGV, SIGBUS.  */
-	struct
-	  {
-	    void *si_addr;	/* Faulting insn/memory ref.  */
-	    int _si_imm;
-	    unsigned int _si_flags;
-	    unsigned long int _si_isr;
-	    short int si_addr_lsb;	/* Valid LSB of the reported address.  */
-	  } _sigfault;
-
-	/* SIGPOLL.  */
-	struct
-	  {
-	    long int si_band;	/* Band event for SIGPOLL.  */
-	    int si_fd;
-	  } _sigpoll;
-      } _sifields;
-  } siginfo_t;
-
-
-/* X/Open requires some more fields with fixed names.  */
-# define si_pid		_sifields._kill.si_pid
-# define si_uid		_sifields._kill.si_uid
-# define si_timerid	_sifields._timer.si_tid
-# define si_overrun	_sifields._timer.si_overrun
-# define si_status	_sifields._sigchld.si_status
-# define si_utime	_sifields._sigchld.si_utime
-# define si_stime	_sifields._sigchld.si_stime
-# define si_value	_sifields._rt.si_sigval
-# define si_int		_sifields._rt.si_sigval.sival_int
-# define si_ptr		_sifields._rt.si_sigval.sival_ptr
-# define si_addr	_sifields._sigfault.si_addr
-# define si_addr_lsb	_sifields._sigfault.si_addr_lsb
-# define si_band	_sifields._sigpoll.si_band
-# define si_fd		_sifields._sigpoll.si_fd
-
-# ifdef __USE_GNU
-#  define si_imm	_sifields._sigfault._si_imm
-#  define si_segvflags	_sifields._sigfault._si_flags
-#  define si_isr	_sifields._sigfault._si_isr
-# endif
-
-/* Values for `si_code'.  Positive values are reserved for kernel-generated
-   signals.  */
-enum
-{
-  SI_ASYNCNL = -60,		/* Sent by asynch name lookup completion.  */
-# define SI_ASYNCNL	SI_ASYNCNL
-  SI_TKILL = -6,		/* Sent by tkill.  */
-# define SI_TKILL	SI_TKILL
-  SI_SIGIO,			/* Sent by queued SIGIO. */
-# define SI_SIGIO	SI_SIGIO
-  SI_ASYNCIO,			/* Sent by AIO completion.  */
-# define SI_ASYNCIO	SI_ASYNCIO
-  SI_MESGQ,			/* Sent by real time mesq state change.  */
-# define SI_MESGQ	SI_MESGQ
-  SI_TIMER,			/* Sent by timer expiration.  */
-# define SI_TIMER	SI_TIMER
-  SI_QUEUE,			/* Sent by sigqueue.  */
-# define SI_QUEUE	SI_QUEUE
-  SI_USER,			/* Sent by kill, sigsend.  */
-# define SI_USER	SI_USER
-  SI_KERNEL = 0x80		/* Send by kernel.  */
-#define SI_KERNEL	SI_KERNEL
-};
-
-
-# if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
-/* `si_code' values for SIGILL signal.  */
-enum
-{
-  ILL_ILLOPC = 1,		/* Illegal opcode.  */
-#  define ILL_ILLOPC	ILL_ILLOPC
-  ILL_ILLOPN,			/* Illegal operand.  */
-#  define ILL_ILLOPN	ILL_ILLOPN
-  ILL_ILLADR,			/* Illegal addressing mode.  */
-#  define ILL_ILLADR	ILL_ILLADR
-  ILL_ILLTRP,			/* Illegal trap. */
-#  define ILL_ILLTRP	ILL_ILLTRP
-  ILL_PRVOPC,			/* Privileged opcode.  */
-#  define ILL_PRVOPC	ILL_PRVOPC
-  ILL_PRVREG,			/* Privileged register.  */
-#  define ILL_PRVREG	ILL_PRVREG
-  ILL_COPROC,			/* Coprocessor error.  */
-#  define ILL_COPROC	ILL_COPROC
-  ILL_BADSTK,			/* Internal stack error.  */
-#  define ILL_BADSTK	ILL_BADSTK
-  ILL_BADIADDR			/* Unimplemented instruction address. */
-#  define ILL_BADIADDR	ILL_BADIADDR
-
-#  ifdef __USE_GNU
-   , ILL_BREAK
-#   define ILL_BREAK	ILL_BREAK
-#  endif
-};
-
-/* `si_code' values for SIGFPE signal.  */
-enum
-{
-  FPE_INTDIV = 1,		/* Integer divide by zero.  */
-#  define FPE_INTDIV	FPE_INTDIV
-  FPE_INTOVF,			/* Integer overflow.  */
-#  define FPE_INTOVF	FPE_INTOVF
-  FPE_FLTDIV,			/* Floating point divide by zero.  */
-#  define FPE_FLTDIV	FPE_FLTDIV
-  FPE_FLTOVF,			/* Floating point overflow.  */
-#  define FPE_FLTOVF	FPE_FLTOVF
-  FPE_FLTUND,			/* Floating point underflow.  */
-#  define FPE_FLTUND	FPE_FLTUND
-  FPE_FLTRES,			/* Floating point inexact result.  */
-#  define FPE_FLTRES	FPE_FLTRES
-  FPE_FLTINV,			/* Floating point invalid operation.  */
-#  define FPE_FLTINV	FPE_FLTINV
-  FPE_FLTSUB			/* Subscript out of range.  */
-#  define FPE_FLTSUB	FPE_FLTSUB
-#  ifdef __USE_GNU
-   , FPE_DECOVF
-#   define FPE_DECOVF	FPE_DECOVF
-   , FPE_DECDIV
-#   define FPE_DECDIV	FPE_DECDIV
-   , FPE_DECERR
-#   define FPE_DECERR	FPE_DECERR
-   , FPE_INVASC
-#   define FPE_INVASC	FPE_INVASC
-   , FPE_INVDEC
-#   define FPE_INVDEC	FPE_INVDEC
-#  endif
-};
-
-/* `si_code' values for SIGSEGV signal.  */
-enum
-{
-  SEGV_MAPERR = 1,		/* Address not mapped to object.  */
-#  define SEGV_MAPERR	SEGV_MAPERR
-  SEGV_ACCERR			/* Invalid permissions for mapped object.  */
-#  define SEGV_ACCERR	SEGV_ACCERR
-#  ifdef __USE_GNU
-  , SEGV_PSTKOVF		/* Paragraph stack overflow. */
-#   define SEGV_PSTKOVF	SEGV_PSTKOVF
-#  endif
-};
-
-/* `si_code' values for SIGBUS signal.  */
-enum
-{
-  BUS_ADRALN = 1,		/* Invalid address alignment.  */
-#  define BUS_ADRALN	BUS_ADRALN
-  BUS_ADRERR,			/* Non-existant physical address.  */
-#  define BUS_ADRERR	BUS_ADRERR
-  BUS_OBJERR,			/* Object specific hardware error.  */
-#  define BUS_OBJERR	BUS_OBJERR
-  BUS_MCEERR_AR,		/* Hardware memory error: action required.  */
-#  define BUS_MCEERR_AR	BUS_MCEERR_AR
-  BUS_MCEERR_AO			/* Hardware memory error: action optional.  */
-#  define BUS_MCEERR_AO	BUS_MCEERR_AO
-};
-# endif
-
-# ifdef __USE_XOPEN_EXTENDED
-/* `si_code' values for SIGTRAP signal.  */
-enum
-{
-  TRAP_BRKPT = 1,		/* Process breakpoint.  */
-#  define TRAP_BRKPT	TRAP_BRKPT
-  TRAP_TRACE			/* Process trace trap.  */
-#  define TRAP_TRACE	TRAP_TRACE
-
-#  ifdef __USE_GNU
-  , TRAP_BRANCH
-#   define TRAP_BRANCH	TRAP_BRANCH
-  , TRAP_HWBKPT
-#   define TRAP_HWBKPT	TRAP_HWBKPT
-#  endif
-};
-# endif
-
-# if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
-/* `si_code' values for SIGCHLD signal.  */
-enum
-{
-  CLD_EXITED = 1,		/* Child has exited.  */
-#  define CLD_EXITED	CLD_EXITED
-  CLD_KILLED,			/* Child was killed.  */
-#  define CLD_KILLED	CLD_KILLED
-  CLD_DUMPED,			/* Child terminated abnormally.  */
-#  define CLD_DUMPED	CLD_DUMPED
-  CLD_TRAPPED,			/* Traced child has trapped.  */
-#  define CLD_TRAPPED	CLD_TRAPPED
-  CLD_STOPPED,			/* Child has stopped.  */
-#  define CLD_STOPPED	CLD_STOPPED
-  CLD_CONTINUED			/* Stopped child has continued.  */
-#  define CLD_CONTINUED	CLD_CONTINUED
-};
-
-/* `si_code' values for SIGPOLL signal.  */
-enum
-{
-  POLL_IN = 1,			/* Data input available.  */
-#  define POLL_IN	POLL_IN
-  POLL_OUT,			/* Output buffers available.  */
-#  define POLL_OUT	POLL_OUT
-  POLL_MSG,			/* Input message available.   */
-#  define POLL_MSG	POLL_MSG
-  POLL_ERR,			/* I/O error.  */
-#  define POLL_ERR	POLL_ERR
-  POLL_PRI,			/* High priority input available.  */
-#  define POLL_PRI	POLL_PRI
-  POLL_HUP			/* Device disconnected.  */
-#  define POLL_HUP	POLL_HUP
-};
-# endif
-
-# undef __need_siginfo_t
-#endif	/* !have siginfo_t && (have _SIGNAL_H || need siginfo_t).  */
-
-
-#if (defined _SIGNAL_H || defined __need_sigevent_t) \
-    && !defined __have_sigevent_t
-# define __have_sigevent_t	1
-
-/* Structure to transport application-defined values with signals.  */
-# define __SIGEV_MAX_SIZE	64
-# define __SIGEV_PAD_SIZE	((__SIGEV_MAX_SIZE / sizeof (int)) - 4)
-
-/* Forward declaration.  */
-# ifndef __have_pthread_attr_t
-typedef union pthread_attr_t pthread_attr_t;
-#  define __have_pthread_attr_t	1
-# endif
-
-typedef struct sigevent
-  {
-    sigval_t sigev_value;
-    int sigev_signo;
-    int sigev_notify;
-
-    union
-      {
-	int _pad[__SIGEV_PAD_SIZE];
-
-	/* When SIGEV_SIGNAL and SIGEV_THREAD_ID set, LWP ID of the
-	   thread to receive the signal.  */
-	__pid_t _tid;
-
-	struct
-	  {
-	    void (*_function) (sigval_t);	/* Function to start.  */
-	    pthread_attr_t *_attribute;		/* Thread attributes.  */
-	  } _sigev_thread;
-      } _sigev_un;
-  } sigevent_t;
-
-/* POSIX names to access some of the members.  */
-# define sigev_notify_function   _sigev_un._sigev_thread._function
-# define sigev_notify_attributes _sigev_un._sigev_thread._attribute
-
-/* `sigev_notify' values.  */
-enum
-{
-  SIGEV_SIGNAL = 0,		/* Notify via signal.  */
-# define SIGEV_SIGNAL	SIGEV_SIGNAL
-  SIGEV_NONE,			/* Other notification: meaningless.  */
-# define SIGEV_NONE	SIGEV_NONE
-  SIGEV_THREAD,			/* Deliver via thread creation.  */
-# define SIGEV_THREAD	SIGEV_THREAD
-
-  SIGEV_THREAD_ID = 4		/* Send signal to specific thread.  */
-#define SIGEV_THREAD_ID	SIGEV_THREAD_ID
-};
-
-#endif	/* have _SIGNAL_H.  */
diff --git a/sysdeps/unix/sysv/linux/m68k/sys/ucontext.h b/sysdeps/unix/sysv/linux/m68k/sys/ucontext.h
index 18ff02233f..62dd96e9f2 100644
--- a/sysdeps/unix/sysv/linux/m68k/sys/ucontext.h
+++ b/sysdeps/unix/sysv/linux/m68k/sys/ucontext.h
@@ -25,6 +25,7 @@
 
 /* We need the signal context definitions even if they are not exposed
    by <signal.h>.  */
+#include <bits/types/__sigset_t.h>
 #include <bits/sigcontext.h>
 #include <bits/sigstack.h>
 #include <bits/types/struct_sigstack.h>
diff --git a/sysdeps/unix/sysv/linux/mips/bits/siginfo-arch.h b/sysdeps/unix/sysv/linux/mips/bits/siginfo-arch.h
new file mode 100644
index 0000000000..4292d7c9cd
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/mips/bits/siginfo-arch.h
@@ -0,0 +1,15 @@
+/* Architecture-specific adjustments to siginfo_t.  MIPS version.  */
+#ifndef _BITS_SIGINFO_ARCH_H
+#define _BITS_SIGINFO_ARCH_H 1
+
+/* MIPS has the si_code and si_errno fields in the opposite order from
+   all other architectures.  */
+#undef __SI_ERRNO_THEN_CODE
+#define __SI_ERRNO_THEN_CODE 0
+
+/* MIPS also has different values for SI_ASYNCIO, SI_MESGQ, and SI_TIMER
+   than all other architectures.  */
+#undef __SI_ASYNCIO_AFTER_SIGIO
+#define __SI_ASYNCIO_AFTER_SIGIO 0
+
+#endif
diff --git a/sysdeps/unix/sysv/linux/mips/bits/siginfo.h b/sysdeps/unix/sysv/linux/mips/bits/siginfo.h
deleted file mode 100644
index 8d3f1dfdb6..0000000000
--- a/sysdeps/unix/sysv/linux/mips/bits/siginfo.h
+++ /dev/null
@@ -1,344 +0,0 @@
-/* siginfo_t, sigevent and constants.  Linux/MIPS version.
-   Copyright (C) 1997-2017 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/>.  */
-
-#if !defined _SIGNAL_H && !defined __need_siginfo_t \
-    && !defined __need_sigevent_t
-# error "Never include this file directly.  Use <signal.h> instead"
-#endif
-
-#include <bits/wordsize.h>
-
-#if (!defined __have_sigval_t \
-     && (defined _SIGNAL_H || defined __need_siginfo_t \
-	 || defined __need_sigevent_t))
-# define __have_sigval_t	1
-
-/* Type for data associated with a signal.  */
-typedef union sigval
-  {
-    int sival_int;
-    void *sival_ptr;
-  } sigval_t;
-#endif
-
-#if (!defined __have_siginfo_t \
-     && (defined _SIGNAL_H || defined __need_siginfo_t))
-# define __have_siginfo_t	1
-
-# define __SI_MAX_SIZE		128
-# if __WORDSIZE == 64
-#  define __SI_PAD_SIZE		((__SI_MAX_SIZE / sizeof (int)) - 4)
-# else
-#  define __SI_PAD_SIZE		((__SI_MAX_SIZE / sizeof (int)) - 3)
-# endif
-
-
-typedef struct
-  {
-    int si_signo;		/* Signal number.  */
-    int si_code;		/* Signal code.  */
-    int si_errno;		/* If non-zero, an errno value associated with
-				   this signal, as defined in <errno.h>.  */
-    int __pad0[__SI_MAX_SIZE / sizeof (int) - __SI_PAD_SIZE - 3];
-				/* Explicit padding.  */
-
-    union
-      {
-	int _pad[__SI_PAD_SIZE];
-
-	 /* kill().  */
-	struct
-	  {
-	    __pid_t si_pid;	/* Sending process ID.  */
-	    __uid_t si_uid;	/* Real user ID of sending process.  */
-	  } _kill;
-
-	/* POSIX.1b timers.  */
-	struct
-	  {
-	    int si_tid;		/* Timer ID.  */
-	    int si_overrun;	/* Overrun count.  */
-	    sigval_t si_sigval;	/* Signal value.  */
-	  } _timer;
-
-	/* POSIX.1b signals.  */
-	struct
-	  {
-	    __pid_t si_pid;	/* Sending process ID.  */
-	    __uid_t si_uid;	/* Real user ID of sending process.  */
-	    sigval_t si_sigval;	/* Signal value.  */
-	  } _rt;
-
-	/* SIGCHLD.  */
-	struct
-	  {
-	    __pid_t si_pid;	/* Which child.  */
-	    __uid_t si_uid;	/* Real user ID of sending process.  */
-	    int si_status;	/* Exit value or signal.  */
-	    __clock_t si_utime;
-	    __clock_t si_stime;
-	  } _sigchld;
-
-	/* SIGILL, SIGFPE, SIGSEGV, SIGBUS.  */
-	struct
-	  {
-	    void *si_addr;	/* Faulting insn/memory ref.  */
-	    short int si_addr_lsb;	/* Valid LSB of the reported address.  */
-	  } _sigfault;
-
-	/* SIGPOLL.  */
-	struct
-	  {
-	    long int si_band;	/* Band event for SIGPOLL.  */
-	    int si_fd;
-	  } _sigpoll;
-
-	/* SIGSYS.  */
-	struct
-	  {
-	    void *_call_addr;	/* Calling user insn.  */
-	    int _syscall;	/* Triggering system call number.  */
-	    unsigned int _arch; /* AUDIT_ARCH_* of syscall.  */
-	  } _sigsys;
-      } _sifields;
-  } siginfo_t;
-
-
-/* X/Open requires some more fields with fixed names.  */
-# define si_pid		_sifields._kill.si_pid
-# define si_uid		_sifields._kill.si_uid
-# define si_timerid	_sifields._timer.si_tid
-# define si_overrun	_sifields._timer.si_overrun
-# define si_status	_sifields._sigchld.si_status
-# define si_utime	_sifields._sigchld.si_utime
-# define si_stime	_sifields._sigchld.si_stime
-# define si_value	_sifields._rt.si_sigval
-# define si_int		_sifields._rt.si_sigval.sival_int
-# define si_ptr		_sifields._rt.si_sigval.sival_ptr
-# define si_addr	_sifields._sigfault.si_addr
-# define si_addr_lsb	_sifields._sigfault.si_addr_lsb
-# define si_band	_sifields._sigpoll.si_band
-# define si_fd		_sifields._sigpoll.si_fd
-# define si_call_addr 	_sifields._sigsys._call_addr
-# define si_syscall	_sifields._sigsys._syscall
-# define si_arch	_sifields._sigsys._arch
-
-
-/* Values for `si_code'.  Positive values are reserved for kernel-generated
-   signals.  */
-enum
-{
-  SI_ASYNCNL = -60,		/* Sent by asynch name lookup completion.  */
-# define SI_ASYNCNL	SI_ASYNCNL
-  SI_TKILL = -6,		/* Sent by tkill.  */
-# define SI_TKILL	SI_TKILL
-  SI_SIGIO,			/* Sent by queued SIGIO.  */
-# define SI_SIGIO	SI_SIGIO
-  SI_MESGQ,			/* Sent by real time mesq state change.  */
-# define SI_MESGQ	SI_MESGQ
-  SI_TIMER,			/* Sent by real time mesq state change.  */
-# define SI_TIMER	SI_TIMER
-  SI_ASYNCIO,			/* Sent by AIO completion.  */
-# define SI_ASYNCIO	SI_ASYNCIO
-  SI_QUEUE,			/* Sent by sigqueue.  */
-# define SI_QUEUE	SI_QUEUE
-  SI_USER,			/* Sent by kill, sigsend.  */
-# define SI_USER	SI_USER
-  SI_KERNEL = 0x80		/* Send by kernel.  */
-#define SI_KERNEL	SI_KERNEL
-};
-
-
-# if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
-/* `si_code' values for SIGILL signal.  */
-enum
-{
-  ILL_ILLOPC = 1,		/* Illegal opcode.  */
-#  define ILL_ILLOPC	ILL_ILLOPC
-  ILL_ILLOPN,			/* Illegal operand.  */
-#  define ILL_ILLOPN	ILL_ILLOPN
-  ILL_ILLADR,			/* Illegal addressing mode.  */
-#  define ILL_ILLADR	ILL_ILLADR
-  ILL_ILLTRP,			/* Illegal trap.  */
-#  define ILL_ILLTRP	ILL_ILLTRP
-  ILL_PRVOPC,			/* Privileged opcode.  */
-#  define ILL_PRVOPC	ILL_PRVOPC
-  ILL_PRVREG,			/* Privileged register.  */
-#  define ILL_PRVREG	ILL_PRVREG
-  ILL_COPROC,			/* Coprocessor error.  */
-#  define ILL_COPROC	ILL_COPROC
-  ILL_BADSTK			/* Internal stack error.  */
-#  define ILL_BADSTK	ILL_BADSTK
-};
-
-/* `si_code' values for SIGFPE signal.  */
-enum
-{
-  FPE_INTDIV = 1,		/* Integer divide by zero.  */
-#  define FPE_INTDIV	FPE_INTDIV
-  FPE_INTOVF,			/* Integer overflow.  */
-#  define FPE_INTOVF	FPE_INTOVF
-  FPE_FLTDIV,			/* Floating point divide by zero.  */
-#  define FPE_FLTDIV	FPE_FLTDIV
-  FPE_FLTOVF,			/* Floating point overflow.  */
-#  define FPE_FLTOVF	FPE_FLTOVF
-  FPE_FLTUND,			/* Floating point underflow.  */
-#  define FPE_FLTUND	FPE_FLTUND
-  FPE_FLTRES,			/* Floating point inexact result.  */
-#  define FPE_FLTRES	FPE_FLTRES
-  FPE_FLTINV,			/* Floating point invalid operation.  */
-#  define FPE_FLTINV	FPE_FLTINV
-  FPE_FLTSUB			/* Subscript out of range.  */
-#  define FPE_FLTSUB	FPE_FLTSUB
-};
-
-/* `si_code' values for SIGSEGV signal.  */
-enum
-{
-  SEGV_MAPERR = 1,		/* Address not mapped to object.  */
-#  define SEGV_MAPERR	SEGV_MAPERR
-  SEGV_ACCERR			/* Invalid permissions for mapped object.  */
-#  define SEGV_ACCERR	SEGV_ACCERR
-};
-
-/* `si_code' values for SIGBUS signal.  */
-enum
-{
-  BUS_ADRALN = 1,		/* Invalid address alignment.  */
-#  define BUS_ADRALN	BUS_ADRALN
-  BUS_ADRERR,			/* Non-existant physical address.  */
-#  define BUS_ADRERR	BUS_ADRERR
-  BUS_OBJERR,			/* Object specific hardware error.  */
-#  define BUS_OBJERR	BUS_OBJERR
-  BUS_MCEERR_AR,		/* Hardware memory error: action required.  */
-#  define BUS_MCEERR_AR	BUS_MCEERR_AR
-  BUS_MCEERR_AO			/* Hardware memory error: action optional.  */
-#  define BUS_MCEERR_AO	BUS_MCEERR_AO
-};
-# endif
-
-# ifdef __USE_XOPEN_EXTENDED
-/* `si_code' values for SIGTRAP signal.  */
-enum
-{
-  TRAP_BRKPT = 1,		/* Process breakpoint.  */
-#  define TRAP_BRKPT	TRAP_BRKPT
-  TRAP_TRACE			/* Process trace trap.  */
-#  define TRAP_TRACE	TRAP_TRACE
-};
-# endif
-
-# if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
-/* `si_code' values for SIGCHLD signal.  */
-enum
-{
-  CLD_EXITED = 1,		/* Child has exited.  */
-#  define CLD_EXITED	CLD_EXITED
-  CLD_KILLED,			/* Child was killed.  */
-#  define CLD_KILLED	CLD_KILLED
-  CLD_DUMPED,			/* Child terminated abnormally.  */
-#  define CLD_DUMPED	CLD_DUMPED
-  CLD_TRAPPED,			/* Traced child has trapped.  */
-#  define CLD_TRAPPED	CLD_TRAPPED
-  CLD_STOPPED,			/* Child has stopped.  */
-#  define CLD_STOPPED	CLD_STOPPED
-  CLD_CONTINUED			/* Stopped child has continued.  */
-#  define CLD_CONTINUED	CLD_CONTINUED
-};
-
-/* `si_code' values for SIGPOLL signal.  */
-enum
-{
-  POLL_IN = 1,			/* Data input available.  */
-#  define POLL_IN	POLL_IN
-  POLL_OUT,			/* Output buffers available.  */
-#  define POLL_OUT	POLL_OUT
-  POLL_MSG,			/* Input message available.   */
-#  define POLL_MSG	POLL_MSG
-  POLL_ERR,			/* I/O error.  */
-#  define POLL_ERR	POLL_ERR
-  POLL_PRI,			/* High priority input available.  */
-#  define POLL_PRI	POLL_PRI
-  POLL_HUP			/* Device disconnected.  */
-#  define POLL_HUP	POLL_HUP
-};
-# endif
-
-# undef __need_siginfo_t
-#endif	/* !have siginfo_t && (have _SIGNAL_H || need siginfo_t).  */
-
-
-#if (defined _SIGNAL_H || defined __need_sigevent_t) \
-    && !defined __have_sigevent_t
-# define __have_sigevent_t	1
-
-/* Structure to transport application-defined values with signals.  */
-# define __SIGEV_MAX_SIZE	64
-# if __WORDSIZE == 64
-#  define __SIGEV_PAD_SIZE	((__SIGEV_MAX_SIZE / sizeof (int)) - 4)
-# else
-#  define __SIGEV_PAD_SIZE	((__SIGEV_MAX_SIZE / sizeof (int)) - 3)
-# endif
-
-/* Forward declaration.  */
-# ifndef __have_pthread_attr_t
-typedef union pthread_attr_t pthread_attr_t;
-#  define __have_pthread_attr_t	1
-# endif
-
-typedef struct sigevent
-  {
-    sigval_t sigev_value;
-    int sigev_signo;
-    int sigev_notify;
-
-    union
-      {
-	int _pad[__SIGEV_PAD_SIZE];
-
-	/* When SIGEV_SIGNAL and SIGEV_THREAD_ID set, LWP ID of the
-	   thread to receive the signal.  */
-	__pid_t _tid;
-
-	struct
-	  {
-	    void (*_function) (sigval_t);	/* Function to start.  */
-	    pthread_attr_t *_attribute;		/* Thread attributes.  */
-	  } _sigev_thread;
-      } _sigev_un;
-  } sigevent_t;
-
-/* POSIX names to access some of the members.  */
-# define sigev_notify_function   _sigev_un._sigev_thread._function
-# define sigev_notify_attributes _sigev_un._sigev_thread._attribute
-
-/* `sigev_notify' values.  */
-enum
-{
-  SIGEV_SIGNAL = 0,		/* Notify via signal.  */
-# define SIGEV_SIGNAL	SIGEV_SIGNAL
-  SIGEV_NONE,			/* Other notification: meaningless.  */
-# define SIGEV_NONE	SIGEV_NONE
-  SIGEV_THREAD,			/* Deliver via thread creation.  */
-# define SIGEV_THREAD	SIGEV_THREAD
-
-  SIGEV_THREAD_ID = 4		/* Send signal to specific thread.  */
-#define SIGEV_THREAD_ID	SIGEV_THREAD_ID
-};
-
-#endif	/* have _SIGNAL_H.  */
diff --git a/sysdeps/unix/sysv/linux/mips/sys/ucontext.h b/sysdeps/unix/sysv/linux/mips/sys/ucontext.h
index f933780dbe..06b45a8726 100644
--- a/sysdeps/unix/sysv/linux/mips/sys/ucontext.h
+++ b/sysdeps/unix/sysv/linux/mips/sys/ucontext.h
@@ -24,6 +24,7 @@
 
 /* We need the signal context definitions even if they are not exposed
    by <signal.h>.  */
+#include <bits/types/__sigset_t.h>
 #include <bits/sigcontext.h>
 #include <bits/sigstack.h>
 #include <bits/types/struct_sigstack.h>
diff --git a/sysdeps/unix/sysv/linux/nios2/sys/ucontext.h b/sysdeps/unix/sysv/linux/nios2/sys/ucontext.h
index c961e5be40..7099b458d4 100644
--- a/sysdeps/unix/sysv/linux/nios2/sys/ucontext.h
+++ b/sysdeps/unix/sysv/linux/nios2/sys/ucontext.h
@@ -26,6 +26,7 @@
 
 /* We need the signal context definitions even if they are not exposed
    by <signal.h>.  */
+#include <bits/types/__sigset_t.h>
 #include <bits/sigcontext.h>
 #include <bits/sigstack.h>
 #include <bits/types/struct_sigstack.h>
diff --git a/sysdeps/unix/sysv/linux/nptl-signals.h b/sysdeps/unix/sysv/linux/nptl-signals.h
index 43aa1a9390..f30c597c0e 100644
--- a/sysdeps/unix/sysv/linux/nptl-signals.h
+++ b/sysdeps/unix/sysv/linux/nptl-signals.h
@@ -17,6 +17,7 @@
    <http://www.gnu.org/licenses/>.  */
 
 #include <signal.h>
+#include <sigsetops.h>
 
 /* The signal used for asynchronous cancelation.  */
 #define SIGCANCEL       __SIGRTMIN
diff --git a/sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h b/sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h
index d9fad4cf8b..d91a5ac59f 100644
--- a/sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h
+++ b/sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h
@@ -19,13 +19,12 @@
 #define _SYS_UCONTEXT_H	1
 
 #include <features.h>
-#define __need_sigset_t
-#include <signal.h>
 
 /* We need the signal context definitions even if they are not exposed
    by <signal.h>.  */
 #include <bits/sigcontext.h>
 #include <bits/sigstack.h>
+#include <bits/types/sigset_t.h>
 #include <bits/types/struct_sigstack.h>
 #include <bits/types/stack_t.h>
 #include <bits/ss_flags.h>
diff --git a/sysdeps/unix/sysv/linux/s390/bits/siginfo.h b/sysdeps/unix/sysv/linux/s390/bits/siginfo.h
deleted file mode 100644
index b32b9ebd6e..0000000000
--- a/sysdeps/unix/sysv/linux/s390/bits/siginfo.h
+++ /dev/null
@@ -1,341 +0,0 @@
-/* siginfo_t, sigevent and constants.  S/390 version.
-   Copyright (C) 2001-2017 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/>.  */
-
-#if !defined _SIGNAL_H && !defined __need_siginfo_t \
-    && !defined __need_sigevent_t
-# error "Never include this file directly.  Use <signal.h> instead"
-#endif
-
-#include <bits/wordsize.h>
-
-#if (!defined __have_sigval_t \
-     && (defined _SIGNAL_H || defined __need_siginfo_t \
-	 || defined __need_sigevent_t))
-# define __have_sigval_t	1
-
-/* Type for data associated with a signal.  */
-typedef union sigval
-  {
-    int sival_int;
-    void *sival_ptr;
-  } sigval_t;
-#endif
-
-#if (!defined __have_siginfo_t \
-     && (defined _SIGNAL_H || defined __need_siginfo_t))
-# define __have_siginfo_t	1
-
-# define __SI_MAX_SIZE	   128
-# if __WORDSIZE == 64
-#  define __SI_PAD_SIZE     ((__SI_MAX_SIZE / sizeof (int)) - 4)
-# else
-#  define __SI_PAD_SIZE     ((__SI_MAX_SIZE / sizeof (int)) - 3)
-# endif
-
-typedef struct
-  {
-    int si_signo;		/* Signal number.  */
-    int si_errno;		/* If non-zero, an errno value associated with
-				   this signal, as defined in <errno.h>.  */
-    int si_code;		/* Signal code.	 */
-
-    union
-      {
-	int _pad[__SI_PAD_SIZE];
-
-	 /* kill().  */
-	struct
-	  {
-	    __pid_t si_pid;	/* Sending process ID.	*/
-	    __uid_t si_uid;	/* Real user ID of sending process.  */
-	  } _kill;
-
-	/* POSIX.1b timers.  */
-	struct
-	  {
-	    int si_tid;		/* Timer ID.  */
-	    int si_overrun;	/* Overrun count.  */
-	    sigval_t si_sigval;	/* Signal value.  */
-	  } _timer;
-
-	/* POSIX.1b signals.  */
-	struct
-	  {
-	    __pid_t si_pid;	/* Sending process ID.	*/
-	    __uid_t si_uid;	/* Real user ID of sending process.  */
-	    sigval_t si_sigval;	/* Signal value.  */
-	  } _rt;
-
-	/* SIGCHLD.  */
-	struct
-	  {
-	    __pid_t si_pid;	/* Which child.	 */
-	    __uid_t si_uid;	/* Real user ID of sending process.  */
-	    int si_status;	/* Exit value or signal.  */
-	    __clock_t si_utime;
-	    __clock_t si_stime;
-	  } _sigchld;
-
-	/* SIGILL, SIGFPE, SIGSEGV, SIGBUS.  */
-	struct
-	  {
-	    void *si_addr;	/* Faulting insn/memory ref.  */
-	    short si_addr_lsb;	/* Valid LSB of the reported address.  */
-	  } _sigfault;
-
-	/* SIGPOLL.  */
-	struct
-	  {
-	    long int si_band;	/* Band event for SIGPOLL.  */
-	    int si_fd;
-	  } _sigpoll;
-
-	/* SIGSYS.  */
-	struct
-	  {
-	    void *_call_addr;	/* Calling user insn.  */
-	    int _syscall;	/* Triggering system call number.  */
-	    unsigned int _arch; /* AUDIT_ARCH_* of syscall.  */
-	  } _sigsys;
-      } _sifields;
-  } siginfo_t;
-
-
-/* X/Open requires some more fields with fixed names.  */
-# define si_pid		_sifields._kill.si_pid
-# define si_uid		_sifields._kill.si_uid
-# define si_timerid	_sifields._timer.si_tid
-# define si_overrun	_sifields._timer.si_overrun
-# define si_status	_sifields._sigchld.si_status
-# define si_utime	_sifields._sigchld.si_utime
-# define si_stime	_sifields._sigchld.si_stime
-# define si_value	_sifields._rt.si_sigval
-# define si_int		_sifields._rt.si_sigval.sival_int
-# define si_ptr		_sifields._rt.si_sigval.sival_ptr
-# define si_addr	_sifields._sigfault.si_addr
-# define si_addr_lsb	_sifields._sigfault.si_addr_lsb
-# define si_band	_sifields._sigpoll.si_band
-# define si_fd		_sifields._sigpoll.si_fd
-# define si_call_addr 	_sifields._sigsys._call_addr
-# define si_syscall	_sifields._sigsys._syscall
-# define si_arch	_sifields._sigsys._arch
-
-
-/* Values for `si_code'.  Positive values are reserved for kernel-generated
-   signals.  */
-enum
-{
-  SI_ASYNCNL = -60,		/* Sent by asynch name lookup completion.  */
-# define SI_ASYNCNL	SI_ASYNCNL
-  SI_TKILL = -6,		/* Sent by tkill.  */
-# define SI_TKILL	SI_TKILL
-  SI_SIGIO,			/* Sent by queued SIGIO. */
-# define SI_SIGIO	SI_SIGIO
-  SI_ASYNCIO,			/* Sent by AIO completion.  */
-# define SI_ASYNCIO	SI_ASYNCIO
-  SI_MESGQ,			/* Sent by real time mesq state change.	 */
-# define SI_MESGQ	SI_MESGQ
-  SI_TIMER,			/* Sent by timer expiration.  */
-# define SI_TIMER	SI_TIMER
-  SI_QUEUE,			/* Sent by sigqueue.  */
-# define SI_QUEUE	SI_QUEUE
-  SI_USER,			/* Sent by kill, sigsend.  */
-# define SI_USER	SI_USER
-  SI_KERNEL = 0x80		/* Send by kernel.  */
-#define SI_KERNEL	SI_KERNEL
-};
-
-
-# if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
-/* `si_code' values for SIGILL signal.	*/
-enum
-{
-  ILL_ILLOPC = 1,		/* Illegal opcode.  */
-#  define ILL_ILLOPC	ILL_ILLOPC
-  ILL_ILLOPN,			/* Illegal operand.  */
-#  define ILL_ILLOPN	ILL_ILLOPN
-  ILL_ILLADR,			/* Illegal addressing mode.  */
-#  define ILL_ILLADR	ILL_ILLADR
-  ILL_ILLTRP,			/* Illegal trap. */
-#  define ILL_ILLTRP	ILL_ILLTRP
-  ILL_PRVOPC,			/* Privileged opcode.  */
-#  define ILL_PRVOPC	ILL_PRVOPC
-  ILL_PRVREG,			/* Privileged register.	 */
-#  define ILL_PRVREG	ILL_PRVREG
-  ILL_COPROC,			/* Coprocessor error.  */
-#  define ILL_COPROC	ILL_COPROC
-  ILL_BADSTK			/* Internal stack error.  */
-#  define ILL_BADSTK	ILL_BADSTK
-};
-
-/* `si_code' values for SIGFPE signal.	*/
-enum
-{
-  FPE_INTDIV = 1,		/* Integer divide by zero.  */
-#  define FPE_INTDIV	FPE_INTDIV
-  FPE_INTOVF,			/* Integer overflow.  */
-#  define FPE_INTOVF	FPE_INTOVF
-  FPE_FLTDIV,			/* Floating point divide by zero.  */
-#  define FPE_FLTDIV	FPE_FLTDIV
-  FPE_FLTOVF,			/* Floating point overflow.  */
-#  define FPE_FLTOVF	FPE_FLTOVF
-  FPE_FLTUND,			/* Floating point underflow.  */
-#  define FPE_FLTUND	FPE_FLTUND
-  FPE_FLTRES,			/* Floating point inexact result.  */
-#  define FPE_FLTRES	FPE_FLTRES
-  FPE_FLTINV,			/* Floating point invalid operation.  */
-#  define FPE_FLTINV	FPE_FLTINV
-  FPE_FLTSUB			/* Subscript out of range.  */
-#  define FPE_FLTSUB	FPE_FLTSUB
-};
-
-/* `si_code' values for SIGSEGV signal.	 */
-enum
-{
-  SEGV_MAPERR = 1,		/* Address not mapped to object.  */
-#  define SEGV_MAPERR	SEGV_MAPERR
-  SEGV_ACCERR			/* Invalid permissions for mapped object.  */
-#  define SEGV_ACCERR	SEGV_ACCERR
-};
-
-/* `si_code' values for SIGBUS signal.	*/
-enum
-{
-  BUS_ADRALN = 1,		/* Invalid address alignment.  */
-#  define BUS_ADRALN	BUS_ADRALN
-  BUS_ADRERR,			/* Non-existant physical address.  */
-#  define BUS_ADRERR	BUS_ADRERR
-  BUS_OBJERR,			/* Object specific hardware error.  */
-#  define BUS_OBJERR	BUS_OBJERR
-  BUS_MCEERR_AR,		/* Hardware memory error: action required.  */
-#  define BUS_MCEERR_AR	BUS_MCEERR_AR
-  BUS_MCEERR_AO			/* Hardware memory error: action optional.  */
-#  define BUS_MCEERR_AO	BUS_MCEERR_AO
-};
-# endif
-
-# ifdef __USE_XOPEN_EXTENDED
-/* `si_code' values for SIGTRAP signal.	 */
-enum
-{
-  TRAP_BRKPT = 1,		/* Process breakpoint.	*/
-#  define TRAP_BRKPT	TRAP_BRKPT
-  TRAP_TRACE			/* Process trace trap.	*/
-#  define TRAP_TRACE	TRAP_TRACE
-};
-# endif
-
-# if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
-/* `si_code' values for SIGCHLD signal.	 */
-enum
-{
-  CLD_EXITED = 1,		/* Child has exited.  */
-#  define CLD_EXITED	CLD_EXITED
-  CLD_KILLED,			/* Child was killed.  */
-#  define CLD_KILLED	CLD_KILLED
-  CLD_DUMPED,			/* Child terminated abnormally.	 */
-#  define CLD_DUMPED	CLD_DUMPED
-  CLD_TRAPPED,			/* Traced child has trapped.  */
-#  define CLD_TRAPPED	CLD_TRAPPED
-  CLD_STOPPED,			/* Child has stopped.  */
-#  define CLD_STOPPED	CLD_STOPPED
-  CLD_CONTINUED			/* Stopped child has continued.	 */
-#  define CLD_CONTINUED	CLD_CONTINUED
-};
-
-/* `si_code' values for SIGPOLL signal.	 */
-enum
-{
-  POLL_IN = 1,			/* Data input available.  */
-#  define POLL_IN	POLL_IN
-  POLL_OUT,			/* Output buffers available.  */
-#  define POLL_OUT	POLL_OUT
-  POLL_MSG,			/* Input message available.   */
-#  define POLL_MSG	POLL_MSG
-  POLL_ERR,			/* I/O error.  */
-#  define POLL_ERR	POLL_ERR
-  POLL_PRI,			/* High priority input available.  */
-#  define POLL_PRI	POLL_PRI
-  POLL_HUP			/* Device disconnected.	 */
-#  define POLL_HUP	POLL_HUP
-};
-# endif
-
-# undef __need_siginfo_t
-#endif	/* !have siginfo_t && (have _SIGNAL_H || need siginfo_t).  */
-
-
-#if (defined _SIGNAL_H || defined __need_sigevent_t) \
-    && !defined __have_sigevent_t
-# define __have_sigevent_t	1
-
-/* Structure to transport application-defined values with signals.  */
-# define __SIGEV_MAX_SIZE	64
-# if __WORDSIZE == 64
-#  define __SIGEV_PAD_SIZE	((__SIGEV_MAX_SIZE / sizeof (int)) - 4)
-# else
-#  define __SIGEV_PAD_SIZE	((__SIGEV_MAX_SIZE / sizeof (int)) - 3)
-# endif
-
-/* Forward declaration.  */
-# ifndef __have_pthread_attr_t
-typedef union pthread_attr_t pthread_attr_t;
-#  define __have_pthread_attr_t	1
-# endif
-
-typedef struct sigevent
-  {
-    sigval_t sigev_value;
-    int sigev_signo;
-    int sigev_notify;
-
-    union
-      {
-	int _pad[__SIGEV_PAD_SIZE];
-
-	/* When SIGEV_SIGNAL and SIGEV_THREAD_ID set, LWP ID of the
-	   thread to receive the signal.  */
-	__pid_t _tid;
-
-	struct
-	  {
-	    void (*_function) (sigval_t);	/* Function to start.	 */
-	    pthread_attr_t *_attribute;		/* Thread attributes.  */
-	  } _sigev_thread;
-      } _sigev_un;
-  } sigevent_t;
-
-/* POSIX names to access some of the members.  */
-# define sigev_notify_function	 _sigev_un._sigev_thread._function
-# define sigev_notify_attributes _sigev_un._sigev_thread._attribute
-
-/* `sigev_notify' values.  */
-enum
-{
-  SIGEV_SIGNAL = 0,		/* Notify via signal.  */
-# define SIGEV_SIGNAL	SIGEV_SIGNAL
-  SIGEV_NONE,			/* Other notification: meaningless.  */
-# define SIGEV_NONE	SIGEV_NONE
-  SIGEV_THREAD,			/* Deliver via thread creation.	 */
-# define SIGEV_THREAD	SIGEV_THREAD
-
-  SIGEV_THREAD_ID = 4		/* Send signal to specific thread.  */
-#define SIGEV_THREAD_ID	SIGEV_THREAD_ID
-};
-
-#endif	/* have _SIGNAL_H.  */
diff --git a/sysdeps/unix/sysv/linux/s390/sys/ucontext.h b/sysdeps/unix/sysv/linux/s390/sys/ucontext.h
index 955a8fef9c..fcbd48ddad 100644
--- a/sysdeps/unix/sysv/linux/s390/sys/ucontext.h
+++ b/sysdeps/unix/sysv/linux/s390/sys/ucontext.h
@@ -24,6 +24,7 @@
 
 /* We need the signal context definitions even if they are not exposed
    by in <signal.h>.  */
+#include <bits/types/__sigset_t.h>
 #include <bits/sigcontext.h>
 #include <bits/sigstack.h>
 #include <bits/types/struct_sigstack.h>
diff --git a/sysdeps/unix/sysv/linux/sh/sys/ucontext.h b/sysdeps/unix/sysv/linux/sh/sys/ucontext.h
index 3ce381d2c6..cefb918831 100644
--- a/sysdeps/unix/sysv/linux/sh/sys/ucontext.h
+++ b/sysdeps/unix/sysv/linux/sh/sys/ucontext.h
@@ -25,6 +25,7 @@
 
 /* We need the signal context definitions even if they are not exposed
    by <signal.h>.  */
+#include <bits/types/__sigset_t.h>
 #include <bits/sigcontext.h>
 #include <bits/sigstack.h>
 #include <bits/types/struct_sigstack.h>
diff --git a/sysdeps/unix/sysv/linux/sigsetops.h b/sysdeps/unix/sysv/linux/sigsetops.h
new file mode 100644
index 0000000000..05a605ff3f
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sigsetops.h
@@ -0,0 +1,108 @@
+/* __sigset_t manipulators.  Linux version.
+   Copyright (C) 1991-2017 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/>.  */
+
+#ifndef _SIGSETOPS_H
+#define _SIGSETOPS_H 1
+
+#include <signal.h>
+
+/* Return a mask that includes the bit for SIG only.  */
+# define __sigmask(sig) \
+  (((unsigned long int) 1) << (((sig) - 1) % (8 * sizeof (unsigned long int))))
+
+/* Return the word index for SIG.  */
+# define __sigword(sig) (((sig) - 1) / (8 * sizeof (unsigned long int)))
+
+# define __sigemptyset(set)					\
+  (__extension__ ({						\
+    int __cnt = _SIGSET_NWORDS;					\
+    sigset_t *__set = (set);					\
+    while (--__cnt >= 0)					\
+      __set->__val[__cnt] = 0;					\
+    (void)0;							\
+  }))
+
+# define __sigfillset(set)					\
+  (__extension__ ({						\
+    int __cnt = _SIGSET_NWORDS;					\
+    sigset_t *__set = (set);					\
+    while (--__cnt >= 0)					\
+      __set->__val[__cnt] = ~0UL;				\
+    (void)0;							\
+  }))
+
+# define __sigisemptyset(set)					\
+  (__extension__ ({						\
+    int __cnt = _SIGSET_NWORDS;					\
+    const sigset_t *__set = (set);				\
+    int __ret = __set->__val[--__cnt];				\
+    while (!__ret && --__cnt >= 0)				\
+      __ret = __set->__val[__cnt];				\
+    __ret == 0;							\
+  }))
+
+# define __sigandset(dest, left, right)				\
+  (__extension__ ({						\
+    int __cnt = _SIGSET_NWORDS;					\
+    sigset_t *__dest = (dest);					\
+    const sigset_t *__left = (left);				\
+    const sigset_t *__right = (right);				\
+    while (--__cnt >= 0)					\
+      __dest->__val[__cnt] = (__left->__val[__cnt]		\
+			      & __right->__val[__cnt]);		\
+    (void)0;							\
+  }))
+
+# define __sigorset(dest, left, right)				\
+  (__extension__ ({						\
+    int __cnt = _SIGSET_NWORDS;					\
+    sigset_t *__dest = (dest);					\
+    const sigset_t *__left = (left);				\
+    const sigset_t *__right = (right);				\
+    while (--__cnt >= 0)					\
+      __dest->__val[__cnt] = (__left->__val[__cnt]		\
+			      | __right->__val[__cnt]);		\
+    (void)0;							\
+  }))
+
+/* These macros needn't check for a bogus signal number;
+   error checking is done in the non-__ versions.  */
+# define __sigismember(set, sig)				\
+  (__extension__ ({						\
+    unsigned long int __mask = __sigmask (sig);			\
+    unsigned long int __word = __sigword (sig);			\
+    (set)->__val[__word] & __mask ? 1 : 0;			\
+  }))
+
+# define __sigaddset(set, sig)					\
+  (__extension__ ({						\
+    unsigned long int __mask = __sigmask (sig);			\
+    unsigned long int __word = __sigword (sig);			\
+    (set)->__val[__word] |= __mask;				\
+    (void)0;							\
+  }))
+
+# define __sigdelset(set, sig)					\
+  (__extension__ ({						\
+    unsigned long int __mask = __sigmask (sig);			\
+    unsigned long int __word = __sigword (sig);			\
+    (set)->__val[__word] &= ~__mask;				\
+    (void)0;							\
+ }))
+
+#endif /* bits/sigsetops.h */
diff --git a/sysdeps/unix/sysv/linux/sparc/bits/siginfo-arch.h b/sysdeps/unix/sysv/linux/sparc/bits/siginfo-arch.h
new file mode 100644
index 0000000000..92fe30f11e
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sparc/bits/siginfo-arch.h
@@ -0,0 +1,14 @@
+/* Architecture-specific adjustments to siginfo_t.  SPARC version.  */
+#ifndef _BITS_SIGINFO_ARCH_H
+#define _BITS_SIGINFO_ARCH_H 1
+
+#undef __SI_BAND_TYPE
+#define __SI_BAND_TYPE int
+
+#undef __SI_SIGFAULT_ADDL
+#define __SI_SIGFAULT_ADDL \
+  int _si_trapno;
+
+#define si_trapno	_sifields._sigfault._si_trapno
+
+#endif
diff --git a/sysdeps/unix/sysv/linux/sparc/bits/siginfo-consts-arch.h b/sysdeps/unix/sysv/linux/sparc/bits/siginfo-consts-arch.h
new file mode 100644
index 0000000000..721dc9cd43
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sparc/bits/siginfo-consts-arch.h
@@ -0,0 +1,12 @@
+/* Architecture-specific additional siginfo constants.  SPARC version.  */
+#ifndef _BITS_SIGINFO_CONSTS_ARCH_H
+#define _BITS_SIGINFO_CONSTS_ARCH_H 1
+
+/* `si_code' values for SIGEMT signal.  */
+enum
+{
+  EMT_TAGOVF = 1	/* Tag overflow.  */
+#define EMT_TAGOVF	EMT_TAGOVF
+};
+
+#endif
diff --git a/sysdeps/unix/sysv/linux/sparc/bits/siginfo.h b/sysdeps/unix/sysv/linux/sparc/bits/siginfo.h
deleted file mode 100644
index 58814164ce..0000000000
--- a/sysdeps/unix/sysv/linux/sparc/bits/siginfo.h
+++ /dev/null
@@ -1,352 +0,0 @@
-/* siginfo_t, sigevent and constants.  Linux/SPARC version.
-   Copyright (C) 1997-2017 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/>.  */
-
-#if !defined _SIGNAL_H && !defined __need_siginfo_t \
-    && !defined __need_sigevent_t
-# error "Never include this file directly.  Use <signal.h> instead"
-#endif
-
-#include <bits/wordsize.h>
-
-#if (!defined __have_sigval_t \
-     && (defined _SIGNAL_H || defined __need_siginfo_t \
-	 || defined __need_sigevent_t))
-# define __have_sigval_t	1
-
-/* Type for data associated with a signal.  */
-typedef union sigval
-  {
-    int sival_int;
-    void *sival_ptr;
-  } sigval_t;
-#endif
-
-#if (!defined __have_siginfo_t \
-     && (defined _SIGNAL_H || defined __need_siginfo_t))
-# define __have_siginfo_t	1
-
-# define __SI_MAX_SIZE     128
-# if __WORDSIZE == 64
-#  define __SI_PAD_SIZE     ((__SI_MAX_SIZE / sizeof (int)) - 4)
-# else
-#  define __SI_PAD_SIZE     ((__SI_MAX_SIZE / sizeof (int)) - 3)
-# endif
-
-typedef struct
-  {
-    int si_signo;		/* Signal number.  */
-    int si_errno;		/* If non-zero, an errno value associated with
-				   this signal, as defined in <errno.h>.  */
-    int si_code;		/* Signal code.  */
-
-    union
-      {
-	int _pad[__SI_PAD_SIZE];
-
-	 /* kill().  */
-	struct
-	  {
-	    __pid_t si_pid;	/* Sending process ID.  */
-	    __uid_t si_uid;	/* Real user ID of sending process.  */
-	  } _kill;
-
-	/* POSIX.1b timers.  */
-	struct
-	  {
-	    int si_tid;		/* Timer ID.  */
-	    int si_overrun;	/* Overrun count.  */
-	    sigval_t si_sigval;	/* Signal value.  */
-	  } _timer;
-
-	/* POSIX.1b signals.  */
-	struct
-	  {
-	    __pid_t si_pid;	/* Sending process ID.  */
-	    __uid_t si_uid;	/* Real user ID of sending process.  */
-	    sigval_t si_sigval;	/* Signal value.  */
-	  } _rt;
-
-	/* SIGCHLD.  */
-	struct
-	  {
-	    __pid_t si_pid;	/* Which child.  */
-	    __uid_t si_uid;	/* Real user ID of sending process.  */
-	    int si_status;	/* Exit value or signal.  */
-	    __clock_t si_utime;
-	    __clock_t si_stime;
-	  } _sigchld;
-
-	/* SIGILL, SIGFPE, SIGSEGV, SIGBUS.  */
-	struct
-	  {
-	    void *si_addr;	/* Faulting insn/memory ref.  */
-	    int si_trapno;
-	    short int si_addr_lsb;	/* Valid LSB of the reported address.  */
-	  } _sigfault;
-
-	/* SIGPOLL.  */
-	struct
-	  {
-	    int si_band;	/* Band event for SIGPOLL.  */
-	    int si_fd;
-	  } _sigpoll;
-
-	/* SIGSYS.  */
-	struct
-	  {
-	    void *_call_addr;	/* Calling user insn.  */
-	    int _syscall;	/* Triggering system call number.  */
-	    unsigned int _arch; /* AUDIT_ARCH_* of syscall.  */
-	  } _sigsys;
-      } _sifields;
-  } siginfo_t;
-
-
-/* X/Open requires some more fields with fixed names.  */
-# define si_pid		_sifields._kill.si_pid
-# define si_uid		_sifields._kill.si_uid
-# define si_timerid	_sifields._timer.si_tid
-# define si_overrun	_sifields._timer.si_overrun
-# define si_status	_sifields._sigchld.si_status
-# define si_utime	_sifields._sigchld.si_utime
-# define si_stime	_sifields._sigchld.si_stime
-# define si_value	_sifields._rt.si_sigval
-# define si_int		_sifields._rt.si_sigval.sival_int
-# define si_ptr		_sifields._rt.si_sigval.sival_ptr
-# define si_addr	_sifields._sigfault.si_addr
-# define si_trapno	_sifields._sigfault.si_trapno
-# define si_addr_lsb	_sifields._sigfault.si_addr_lsb
-# define si_band	_sifields._sigpoll.si_band
-# define si_fd		_sifields._sigpoll.si_fd
-# define si_call_addr 	_sifields._sigsys._call_addr
-# define si_syscall	_sifields._sigsys._syscall
-# define si_arch	_sifields._sigsys._arch
-
-
-/* Values for `si_code'.  Positive values are reserved for kernel-generated
-   signals.  */
-enum
-{
-  SI_ASYNCNL = -60,		/* Sent by asynch name lookup completion.  */
-# define SI_ASYNCNL	SI_ASYNCNL
-  SI_TKILL = -6,		/* Sent by tkill.  */
-# define SI_TKILL	SI_TKILL
-  SI_SIGIO,			/* Sent by queued SIGIO. */
-# define SI_SIGIO	SI_SIGIO
-  SI_ASYNCIO,			/* Sent by AIO completion.  */
-# define SI_ASYNCIO	SI_ASYNCIO
-  SI_MESGQ,			/* Sent by real time mesq state change.  */
-# define SI_MESGQ	SI_MESGQ
-  SI_TIMER,			/* Sent by timer expiration.  */
-# define SI_TIMER	SI_TIMER
-  SI_QUEUE,			/* Sent by sigqueue.  */
-# define SI_QUEUE	SI_QUEUE
-  SI_USER,			/* Sent by kill, sigsend.  */
-# define SI_USER	SI_USER
-  SI_KERNEL = 0x80		/* Send by kernel.  */
-#define SI_KERNEL	SI_KERNEL
-};
-
-
-# if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
-/* `si_code' values for SIGILL signal.  */
-enum
-{
-  ILL_ILLOPC = 1,		/* Illegal opcode.  */
-#  define ILL_ILLOPC	ILL_ILLOPC
-  ILL_ILLOPN,			/* Illegal operand.  */
-#  define ILL_ILLOPN	ILL_ILLOPN
-  ILL_ILLADR,			/* Illegal addressing mode.  */
-#  define ILL_ILLADR	ILL_ILLADR
-  ILL_ILLTRP,			/* Illegal trap. */
-#  define ILL_ILLTRP	ILL_ILLTRP
-  ILL_PRVOPC,			/* Privileged opcode.  */
-#  define ILL_PRVOPC	ILL_PRVOPC
-  ILL_PRVREG,			/* Privileged register.  */
-#  define ILL_PRVREG	ILL_PRVREG
-  ILL_COPROC,			/* Coprocessor error.  */
-#  define ILL_COPROC	ILL_COPROC
-  ILL_BADSTK			/* Internal stack error.  */
-#  define ILL_BADSTK	ILL_BADSTK
-};
-
-/* `si_code' values for SIGFPE signal.  */
-enum
-{
-  FPE_INTDIV = 1,		/* Integer divide by zero.  */
-#  define FPE_INTDIV	FPE_INTDIV
-  FPE_INTOVF,			/* Integer overflow.  */
-#  define FPE_INTOVF	FPE_INTOVF
-  FPE_FLTDIV,			/* Floating point divide by zero.  */
-#  define FPE_FLTDIV	FPE_FLTDIV
-  FPE_FLTOVF,			/* Floating point overflow.  */
-#  define FPE_FLTOVF	FPE_FLTOVF
-  FPE_FLTUND,			/* Floating point underflow.  */
-#  define FPE_FLTUND	FPE_FLTUND
-  FPE_FLTRES,			/* Floating point inexact result.  */
-#  define FPE_FLTRES	FPE_FLTRES
-  FPE_FLTINV,			/* Floating point invalid operation.  */
-#  define FPE_FLTINV	FPE_FLTINV
-  FPE_FLTSUB			/* Subscript out of range.  */
-#  define FPE_FLTSUB	FPE_FLTSUB
-};
-
-/* `si_code' values for SIGSEGV signal.  */
-enum
-{
-  SEGV_MAPERR = 1,		/* Address not mapped to object.  */
-#  define SEGV_MAPERR	SEGV_MAPERR
-  SEGV_ACCERR			/* Invalid permissions for mapped object.  */
-#  define SEGV_ACCERR	SEGV_ACCERR
-};
-
-/* `si_code' values for SIGBUS signal.  */
-enum
-{
-  BUS_ADRALN = 1,		/* Invalid address alignment.  */
-#  define BUS_ADRALN	BUS_ADRALN
-  BUS_ADRERR,			/* Non-existant physical address.  */
-#  define BUS_ADRERR	BUS_ADRERR
-  BUS_OBJERR,			/* Object specific hardware error.  */
-#  define BUS_OBJERR	BUS_OBJERR
-  BUS_MCEERR_AR,		/* Hardware memory error: action required.  */
-#  define BUS_MCEERR_AR	BUS_MCEERR_AR
-  BUS_MCEERR_AO			/* Hardware memory error: action optional.  */
-#  define BUS_MCEERR_AO	BUS_MCEERR_AO
-};
-# endif
-
-# ifdef __USE_XOPEN_EXTENDED
-/* `si_code' values for SIGTRAP signal.  */
-enum
-{
-  TRAP_BRKPT = 1,		/* Process breakpoint.  */
-#  define TRAP_BRKPT	TRAP_BRKPT
-  TRAP_TRACE			/* Process trace trap.  */
-#  define TRAP_TRACE	TRAP_TRACE
-};
-# endif
-
-# if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
-/* `si_code' values for SIGCHLD signal.  */
-enum
-{
-  CLD_EXITED = 1,		/* Child has exited.  */
-#  define CLD_EXITED	CLD_EXITED
-  CLD_KILLED,			/* Child was killed.  */
-#  define CLD_KILLED	CLD_KILLED
-  CLD_DUMPED,			/* Child terminated abnormally.  */
-#  define CLD_DUMPED	CLD_DUMPED
-  CLD_TRAPPED,			/* Traced child has trapped.  */
-#  define CLD_TRAPPED	CLD_TRAPPED
-  CLD_STOPPED,			/* Child has stopped.  */
-#  define CLD_STOPPED	CLD_STOPPED
-  CLD_CONTINUED			/* Stopped child has continued.  */
-#  define CLD_CONTINUED	CLD_CONTINUED
-};
-
-/* `si_code' values for SIGPOLL signal.  */
-enum
-{
-  POLL_IN = 1,			/* Data input available.  */
-#  define POLL_IN	POLL_IN
-  POLL_OUT,			/* Output buffers available.  */
-#  define POLL_OUT	POLL_OUT
-  POLL_MSG,			/* Input message available.   */
-#  define POLL_MSG	POLL_MSG
-  POLL_ERR,			/* I/O error.  */
-#  define POLL_ERR	POLL_ERR
-  POLL_PRI,			/* High priority input available.  */
-#  define POLL_PRI	POLL_PRI
-  POLL_HUP			/* Device disconnected.  */
-#  define POLL_HUP	POLL_HUP
-};
-# endif
-
-# if defined __USE_GNU
-/* `si_code' values for SIGEMT signal.  */
-enum
-{
-  EMT_TAGOVF = 1		/* Tag overflow.  */
-# define EMT_TAGOVF	EMT_TAGOVF
-};
-# endif
-
-# undef __need_siginfo_t
-#endif	/* !have siginfo_t && (have _SIGNAL_H || need siginfo_t).  */
-
-
-#if (defined _SIGNAL_H || defined __need_sigevent_t) \
-    && !defined __have_sigevent_t
-# define __have_sigevent_t	1
-
-/* Structure to transport application-defined values with signals.  */
-# define __SIGEV_MAX_SIZE	64
-# if __WORDSIZE == 64
-#  define __SIGEV_PAD_SIZE	((__SIGEV_MAX_SIZE / sizeof (int)) - 4)
-# else
-#  define __SIGEV_PAD_SIZE	((__SIGEV_MAX_SIZE / sizeof (int)) - 3)
-# endif
-
-/* Forward declaration.  */
-# ifndef __have_pthread_attr_t
-typedef union pthread_attr_t pthread_attr_t;
-#  define __have_pthread_attr_t	1
-# endif
-
-typedef struct sigevent
-  {
-    sigval_t sigev_value;
-    int sigev_signo;
-    int sigev_notify;
-
-    union
-      {
-	int _pad[__SIGEV_PAD_SIZE];
-
-	/* When SIGEV_SIGNAL and SIGEV_THREAD_ID set, LWP ID of the
-	   thread to receive the signal.  */
-	__pid_t _tid;
-
-	struct
-	  {
-	    void (*_function) (sigval_t);	/* Function to start.  */
-	    pthread_attr_t *_attribute;		/* Thread attributes.  */
-	  } _sigev_thread;
-      } _sigev_un;
-  } sigevent_t;
-
-/* POSIX names to access some of the members.  */
-# define sigev_notify_function   _sigev_un._sigev_thread._function
-# define sigev_notify_attributes _sigev_un._sigev_thread._attribute
-
-/* `sigev_notify' values.  */
-enum
-{
-  SIGEV_SIGNAL = 0,		/* Notify via signal.  */
-# define SIGEV_SIGNAL	SIGEV_SIGNAL
-  SIGEV_NONE,			/* Other notification: meaningless.  */
-# define SIGEV_NONE	SIGEV_NONE
-  SIGEV_THREAD,			/* Deliver via thread creation.  */
-# define SIGEV_THREAD	SIGEV_THREAD
-
-  SIGEV_THREAD_ID = 4		/* Send signal to specific thread.  */
-#define SIGEV_THREAD_ID	SIGEV_THREAD_ID
-};
-
-#endif	/* have _SIGNAL_H.  */
diff --git a/sysdeps/unix/sysv/linux/sparc/sys/ucontext.h b/sysdeps/unix/sysv/linux/sparc/sys/ucontext.h
index 0d6cbe6e6b..e859b79c9d 100644
--- a/sysdeps/unix/sysv/linux/sparc/sys/ucontext.h
+++ b/sysdeps/unix/sysv/linux/sparc/sys/ucontext.h
@@ -23,6 +23,7 @@
 
 /* We need the signal context definitions even if they are not exposed
    by <signal.h>.  */
+#include <bits/types/__sigset_t.h>
 #include <bits/sigcontext.h>
 #include <bits/sigstack.h>
 #include <bits/types/struct_sigstack.h>
diff --git a/sysdeps/unix/sysv/linux/sys/epoll.h b/sysdeps/unix/sysv/linux/sys/epoll.h
index 7542e8ac0b..1498058396 100644
--- a/sysdeps/unix/sysv/linux/sys/epoll.h
+++ b/sysdeps/unix/sysv/linux/sys/epoll.h
@@ -21,13 +21,7 @@
 #include <stdint.h>
 #include <sys/types.h>
 
-/* Get __sigset_t.  */
-#include <bits/sigset.h>
-
-#ifndef __sigset_t_defined
-# define __sigset_t_defined
-typedef __sigset_t sigset_t;
-#endif
+#include <bits/types/sigset_t.h>
 
 /* Get the platform-dependent flags.  */
 #include <bits/epoll.h>
diff --git a/sysdeps/unix/sysv/linux/sys/signalfd.h b/sysdeps/unix/sysv/linux/sys/signalfd.h
index a18db513b9..a01c7d1cc1 100644
--- a/sysdeps/unix/sysv/linux/sys/signalfd.h
+++ b/sysdeps/unix/sysv/linux/sys/signalfd.h
@@ -18,9 +18,8 @@
 #ifndef	_SYS_SIGNALFD_H
 #define	_SYS_SIGNALFD_H	1
 
-#define __need_sigset_t
-#include <signal.h>
 #include <stdint.h>
+#include <bits/types/sigset_t.h>
 
 /* Get the platform-dependent flags.  */
 #include <bits/signalfd.h>
diff --git a/sysdeps/unix/sysv/linux/tile/bits/siginfo-arch.h b/sysdeps/unix/sysv/linux/tile/bits/siginfo-arch.h
new file mode 100644
index 0000000000..013ad7187d
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/tile/bits/siginfo-arch.h
@@ -0,0 +1,11 @@
+/* Architecture-specific adjustments to siginfo_t.  Tile version.  */
+#ifndef _BITS_SIGINFO_ARCH_H
+#define _BITS_SIGINFO_ARCH_H 1
+
+#undef __SI_SIGFAULT_ADDL
+#define __SI_SIGFAULT_ADDL \
+  int _si_trapno;
+
+#define si_trapno	_sifields._sigfault._si_trapno
+
+#endif
diff --git a/sysdeps/unix/sysv/linux/tile/bits/siginfo-consts-arch.h b/sysdeps/unix/sysv/linux/tile/bits/siginfo-consts-arch.h
new file mode 100644
index 0000000000..2e76d2082a
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/tile/bits/siginfo-consts-arch.h
@@ -0,0 +1,14 @@
+/* Architecture-specific additional siginfo constants.  Tile version.  */
+#ifndef _BITS_SIGINFO_CONSTS_ARCH_H
+#define _BITS_SIGINFO_CONSTS_ARCH_H 1
+
+/* `si_code' values for SIGILL signal.  */
+enum
+{
+  ILL_DBLFLT = ILL_BADSTK + 1,	/* Double fault.  */
+#define ILL_DBLFLT ILL_DBLFLT
+  ILL_HARDWALL			/* User networks hardwall violation.  */
+#define ILL_HARDWALL ILL_HARDWALL
+};
+
+#endif
diff --git a/sysdeps/unix/sysv/linux/tile/bits/siginfo.h b/sysdeps/unix/sysv/linux/tile/bits/siginfo.h
deleted file mode 100644
index 44d66a0597..0000000000
--- a/sysdeps/unix/sysv/linux/tile/bits/siginfo.h
+++ /dev/null
@@ -1,347 +0,0 @@
-/* Copyright (C) 2011-2017 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
-
-   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/>.  */
-
-#if !defined _SIGNAL_H && !defined __need_siginfo_t \
-    && !defined __need_sigevent_t
-# error "Never include this file directly.  Use <signal.h> instead"
-#endif
-
-#include <bits/wordsize.h>
-
-#if (!defined __have_sigval_t \
-     && (defined _SIGNAL_H || defined __need_siginfo_t \
-	 || defined __need_sigevent_t))
-# define __have_sigval_t	1
-
-/* Type for data associated with a signal.  */
-typedef union sigval
-  {
-    int sival_int;
-    void *sival_ptr;
-  } sigval_t;
-#endif
-
-#if (!defined __have_siginfo_t \
-     && (defined _SIGNAL_H || defined __need_siginfo_t))
-# define __have_siginfo_t	1
-
-# define __SI_MAX_SIZE     128
-# if __WORDSIZE == 64
-#  define __SI_PAD_SIZE     ((__SI_MAX_SIZE / sizeof (int)) - 4)
-# else
-#  define __SI_PAD_SIZE     ((__SI_MAX_SIZE / sizeof (int)) - 3)
-# endif
-
-typedef struct
-  {
-    int si_signo;		/* Signal number.  */
-    int si_errno;		/* If non-zero, an errno value associated with
-				   this signal, as defined in <errno.h>.  */
-    int si_code;		/* Signal code.  */
-
-    union
-      {
-	int _pad[__SI_PAD_SIZE];
-
-	 /* kill().  */
-	struct
-	  {
-	    __pid_t si_pid;	/* Sending process ID.  */
-	    __uid_t si_uid;	/* Real user ID of sending process.  */
-	  } _kill;
-
-	/* POSIX.1b timers.  */
-	struct
-	  {
-	    int si_tid;		/* Timer ID.  */
-	    int si_overrun;	/* Overrun count.  */
-	    sigval_t si_sigval;	/* Signal value.  */
-	  } _timer;
-
-	/* POSIX.1b signals.  */
-	struct
-	  {
-	    __pid_t si_pid;	/* Sending process ID.  */
-	    __uid_t si_uid;	/* Real user ID of sending process.  */
-	    sigval_t si_sigval;	/* Signal value.  */
-	  } _rt;
-
-	/* SIGCHLD.  */
-	struct
-	  {
-	    __pid_t si_pid;	/* Which child.  */
-	    __uid_t si_uid;	/* Real user ID of sending process.  */
-	    int si_status;	/* Exit value or signal.  */
-	    __clock_t si_utime;
-	    __clock_t si_stime;
-	  } _sigchld;
-
-	/* SIGILL, SIGFPE, SIGSEGV, SIGBUS.  */
-	struct
-	  {
-	    void *si_addr;	/* Faulting insn/memory ref.  */
-	    int si_trapno;	/* TRAP # which caused the signal.  */
-	    short int si_addr_lsb;	/* Valid LSB of the reported address.  */
-	  } _sigfault;
-
-	/* SIGPOLL.  */
-	struct
-	  {
-	    long int si_band;	/* Band event for SIGPOLL.  */
-	    int si_fd;
-	  } _sigpoll;
-
-	/* SIGSYS.  */
-	struct
-	  {
-	    void *_call_addr;	/* Calling user insn.  */
-	    int _syscall;	/* Triggering system call number.  */
-	    unsigned int _arch; /* AUDIT_ARCH_* of syscall.  */
-	  } _sigsys;
-      } _sifields;
-  } siginfo_t;
-
-
-/* X/Open requires some more fields with fixed names.  */
-# define si_pid		_sifields._kill.si_pid
-# define si_uid		_sifields._kill.si_uid
-# define si_timerid	_sifields._timer.si_tid
-# define si_overrun	_sifields._timer.si_overrun
-# define si_status	_sifields._sigchld.si_status
-# define si_utime	_sifields._sigchld.si_utime
-# define si_stime	_sifields._sigchld.si_stime
-# define si_value	_sifields._rt.si_sigval
-# define si_int		_sifields._rt.si_sigval.sival_int
-# define si_ptr		_sifields._rt.si_sigval.sival_ptr
-# define si_addr	_sifields._sigfault.si_addr
-# define si_trapno	_sifields._sigfault.si_trapno
-# define si_addr_lsb	_sifields._sigfault.si_addr_lsb
-# define si_band	_sifields._sigpoll.si_band
-# define si_fd		_sifields._sigpoll.si_fd
-# define si_call_addr 	_sifields._sigsys._call_addr
-# define si_syscall	_sifields._sigsys._syscall
-# define si_arch	_sifields._sigsys._arch
-
-
-/* Values for `si_code'.  Positive values are reserved for kernel-generated
-   signals.  */
-enum
-{
-  SI_ASYNCNL = -60,		/* Sent by asynch name lookup completion.  */
-# define SI_ASYNCNL	SI_ASYNCNL
-  SI_TKILL = -6,		/* Sent by tkill.  */
-# define SI_TKILL	SI_TKILL
-  SI_SIGIO,			/* Sent by queued SIGIO. */
-# define SI_SIGIO	SI_SIGIO
-  SI_ASYNCIO,			/* Sent by AIO completion.  */
-# define SI_ASYNCIO	SI_ASYNCIO
-  SI_MESGQ,			/* Sent by real time mesq state change.  */
-# define SI_MESGQ	SI_MESGQ
-  SI_TIMER,			/* Sent by timer expiration.  */
-# define SI_TIMER	SI_TIMER
-  SI_QUEUE,			/* Sent by sigqueue.  */
-# define SI_QUEUE	SI_QUEUE
-  SI_USER,			/* Sent by kill, sigsend, raise.  */
-# define SI_USER	SI_USER
-  SI_KERNEL = 0x80		/* Send by kernel.  */
-#define SI_KERNEL	SI_KERNEL
-};
-
-
-# if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
-/* `si_code' values for SIGILL signal.  */
-enum
-{
-  ILL_ILLOPC = 1,		/* Illegal opcode.  */
-#  define ILL_ILLOPC	ILL_ILLOPC
-  ILL_ILLOPN,			/* Illegal operand.  */
-#  define ILL_ILLOPN	ILL_ILLOPN
-  ILL_ILLADR,			/* Illegal addressing mode.  */
-#  define ILL_ILLADR	ILL_ILLADR
-  ILL_ILLTRP,			/* Illegal trap. */
-#  define ILL_ILLTRP	ILL_ILLTRP
-  ILL_PRVOPC,			/* Privileged opcode.  */
-#  define ILL_PRVOPC	ILL_PRVOPC
-  ILL_PRVREG,			/* Privileged register.  */
-#  define ILL_PRVREG	ILL_PRVREG
-  ILL_COPROC,			/* Coprocessor error.  */
-#  define ILL_COPROC	ILL_COPROC
-  ILL_BADSTK,			/* Internal stack error.  */
-#  define ILL_BADSTK	ILL_BADSTK
-  ILL_DBLFLT,			/* Double fault.  */
-#  define ILL_DBLFLT	ILL_DBLFLT
-  ILL_HARDWALL			/* User networks hardwall violation.  */
-#  define ILL_HARDWALL	ILL_HARDWALL
-};
-
-/* `si_code' values for SIGFPE signal.  */
-enum
-{
-  FPE_INTDIV = 1,		/* Integer divide by zero.  */
-#  define FPE_INTDIV	FPE_INTDIV
-  FPE_INTOVF,			/* Integer overflow.  */
-#  define FPE_INTOVF	FPE_INTOVF
-  FPE_FLTDIV,			/* Floating point divide by zero.  */
-#  define FPE_FLTDIV	FPE_FLTDIV
-  FPE_FLTOVF,			/* Floating point overflow.  */
-#  define FPE_FLTOVF	FPE_FLTOVF
-  FPE_FLTUND,			/* Floating point underflow.  */
-#  define FPE_FLTUND	FPE_FLTUND
-  FPE_FLTRES,			/* Floating point inexact result.  */
-#  define FPE_FLTRES	FPE_FLTRES
-  FPE_FLTINV,			/* Floating point invalid operation.  */
-#  define FPE_FLTINV	FPE_FLTINV
-  FPE_FLTSUB			/* Subscript out of range.  */
-#  define FPE_FLTSUB	FPE_FLTSUB
-};
-
-/* `si_code' values for SIGSEGV signal.  */
-enum
-{
-  SEGV_MAPERR = 1,		/* Address not mapped to object.  */
-#  define SEGV_MAPERR	SEGV_MAPERR
-  SEGV_ACCERR			/* Invalid permissions for mapped object.  */
-#  define SEGV_ACCERR	SEGV_ACCERR
-};
-
-/* `si_code' values for SIGBUS signal.  */
-enum
-{
-  BUS_ADRALN = 1,		/* Invalid address alignment.  */
-#  define BUS_ADRALN	BUS_ADRALN
-  BUS_ADRERR,			/* Non-existant physical address.  */
-#  define BUS_ADRERR	BUS_ADRERR
-  BUS_OBJERR,			/* Object specific hardware error.  */
-#  define BUS_OBJERR	BUS_OBJERR
-  BUS_MCEERR_AR,		/* Hardware memory error: action required.  */
-#  define BUS_MCEERR_AR	BUS_MCEERR_AR
-  BUS_MCEERR_AO			/* Hardware memory error: action optional.  */
-#  define BUS_MCEERR_AO	BUS_MCEERR_AO
-};
-# endif
-
-# ifdef __USE_XOPEN_EXTENDED
-/* `si_code' values for SIGTRAP signal.  */
-enum
-{
-  TRAP_BRKPT = 1,		/* Process breakpoint.  */
-#  define TRAP_BRKPT	TRAP_BRKPT
-  TRAP_TRACE			/* Process trace trap.  */
-#  define TRAP_TRACE	TRAP_TRACE
-};
-# endif
-
-# if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
-/* `si_code' values for SIGCHLD signal.  */
-enum
-{
-  CLD_EXITED = 1,		/* Child has exited.  */
-#  define CLD_EXITED	CLD_EXITED
-  CLD_KILLED,			/* Child was killed.  */
-#  define CLD_KILLED	CLD_KILLED
-  CLD_DUMPED,			/* Child terminated abnormally.  */
-#  define CLD_DUMPED	CLD_DUMPED
-  CLD_TRAPPED,			/* Traced child has trapped.  */
-#  define CLD_TRAPPED	CLD_TRAPPED
-  CLD_STOPPED,			/* Child has stopped.  */
-#  define CLD_STOPPED	CLD_STOPPED
-  CLD_CONTINUED			/* Stopped child has continued.  */
-#  define CLD_CONTINUED	CLD_CONTINUED
-};
-
-/* `si_code' values for SIGPOLL signal.  */
-enum
-{
-  POLL_IN = 1,			/* Data input available.  */
-#  define POLL_IN	POLL_IN
-  POLL_OUT,			/* Output buffers available.  */
-#  define POLL_OUT	POLL_OUT
-  POLL_MSG,			/* Input message available.   */
-#  define POLL_MSG	POLL_MSG
-  POLL_ERR,			/* I/O error.  */
-#  define POLL_ERR	POLL_ERR
-  POLL_PRI,			/* High priority input available.  */
-#  define POLL_PRI	POLL_PRI
-  POLL_HUP			/* Device disconnected.  */
-#  define POLL_HUP	POLL_HUP
-};
-# endif
-
-# undef __need_siginfo_t
-#endif	/* !have siginfo_t && (have _SIGNAL_H || need siginfo_t).  */
-
-
-#if (defined _SIGNAL_H || defined __need_sigevent_t) \
-    && !defined __have_sigevent_t
-# define __have_sigevent_t	1
-
-/* Structure to transport application-defined values with signals.  */
-# define __SIGEV_MAX_SIZE	64
-# if __WORDSIZE == 64
-#  define __SIGEV_PAD_SIZE	((__SIGEV_MAX_SIZE / sizeof (int)) - 4)
-# else
-#  define __SIGEV_PAD_SIZE	((__SIGEV_MAX_SIZE / sizeof (int)) - 3)
-# endif
-
-/* Forward declaration.  */
-# ifndef __have_pthread_attr_t
-typedef union pthread_attr_t pthread_attr_t;
-#  define __have_pthread_attr_t	1
-# endif
-
-typedef struct sigevent
-  {
-    sigval_t sigev_value;
-    int sigev_signo;
-    int sigev_notify;
-
-    union
-      {
-	int _pad[__SIGEV_PAD_SIZE];
-
-	/* When SIGEV_SIGNAL and SIGEV_THREAD_ID set, LWP ID of the
-	   thread to receive the signal.  */
-	__pid_t _tid;
-
-	struct
-	  {
-	    void (*_function) (sigval_t);	/* Function to start.  */
-	    pthread_attr_t *_attribute;		/* Thread attributes.  */
-	  } _sigev_thread;
-      } _sigev_un;
-  } sigevent_t;
-
-/* POSIX names to access some of the members.  */
-# define sigev_notify_function   _sigev_un._sigev_thread._function
-# define sigev_notify_attributes _sigev_un._sigev_thread._attribute
-
-/* `sigev_notify' values.  */
-enum
-{
-  SIGEV_SIGNAL = 0,		/* Notify via signal.  */
-# define SIGEV_SIGNAL	SIGEV_SIGNAL
-  SIGEV_NONE,			/* Other notification: meaningless.  */
-# define SIGEV_NONE	SIGEV_NONE
-  SIGEV_THREAD,			/* Deliver via thread creation.  */
-# define SIGEV_THREAD	SIGEV_THREAD
-
-  SIGEV_THREAD_ID = 4		/* Send signal to specific thread.  */
-#define SIGEV_THREAD_ID	SIGEV_THREAD_ID
-};
-
-#endif	/* have _SIGNAL_H.  */
diff --git a/sysdeps/unix/sysv/linux/tile/sys/ucontext.h b/sysdeps/unix/sysv/linux/tile/sys/ucontext.h
index 8fc2f13834..4a40e5710f 100644
--- a/sysdeps/unix/sysv/linux/tile/sys/ucontext.h
+++ b/sysdeps/unix/sysv/linux/tile/sys/ucontext.h
@@ -24,6 +24,7 @@
 
 /* We need the signal context definitions even if they are not exposed
    by <signal.h>.  */
+#include <bits/types/__sigset_t.h>
 #include <bits/sigcontext.h>
 #include <bits/sigstack.h>
 #include <bits/types/struct_sigstack.h>
diff --git a/sysdeps/unix/sysv/linux/x86/bits/siginfo-arch.h b/sysdeps/unix/sysv/linux/x86/bits/siginfo-arch.h
new file mode 100644
index 0000000000..6c85dbb6e8
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/x86/bits/siginfo-arch.h
@@ -0,0 +1,19 @@
+/* Architecture-specific adjustments to siginfo_t.  x86 version.  */
+#ifndef _BITS_SIGINFO_ARCH_H
+#define _BITS_SIGINFO_ARCH_H 1
+
+#if defined __x86_64__ && __WORDSIZE == 32
+/* si_utime and si_stime must be 4 byte aligned for x32 to match the
+   kernel.  We align siginfo_t to 8 bytes so that si_utime and
+   si_stime are actually aligned to 8 bytes since their offsets are
+   multiple of 8 bytes.  Note: with some compilers, the alignment
+   attribute would be ignored if it were put in __SI_CLOCK_T instead
+   of encapsulated in a typedef.  */
+typedef __clock_t __attribute__ ((__aligned__ (4))) __sigchld_clock_t;
+# undef  __SI_ALIGNMENT
+# define __SI_ALIGNMENT __attribute__ ((__aligned__ (8)))
+# undef  __SI_CLOCK_T
+# define __SI_CLOCK_T __sigchld_clock_t
+#endif
+
+#endif
diff --git a/sysdeps/unix/sysv/linux/x86/bits/siginfo.h b/sysdeps/unix/sysv/linux/x86/bits/siginfo.h
deleted file mode 100644
index 569359980d..0000000000
--- a/sysdeps/unix/sysv/linux/x86/bits/siginfo.h
+++ /dev/null
@@ -1,360 +0,0 @@
-/* siginfo_t, sigevent and constants.  Linux x86-64 version.
-   Copyright (C) 2012-2017 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/>.  */
-
-#if !defined _SIGNAL_H && !defined __need_siginfo_t \
-    && !defined __need_sigevent_t
-# error "Never include this file directly.  Use <signal.h> instead"
-#endif
-
-#include <bits/wordsize.h>
-
-#if (!defined __have_sigval_t \
-     && (defined _SIGNAL_H || defined __need_siginfo_t \
-	 || defined __need_sigevent_t))
-# define __have_sigval_t	1
-
-/* Type for data associated with a signal.  */
-typedef union sigval
-  {
-    int sival_int;
-    void *sival_ptr;
-  } sigval_t;
-#endif
-
-#if (!defined __have_siginfo_t \
-     && (defined _SIGNAL_H || defined __need_siginfo_t))
-# define __have_siginfo_t	1
-
-# define __SI_MAX_SIZE     128
-# if __WORDSIZE == 64
-#  define __SI_PAD_SIZE     ((__SI_MAX_SIZE / sizeof (int)) - 4)
-# else
-#  define __SI_PAD_SIZE     ((__SI_MAX_SIZE / sizeof (int)) - 3)
-# endif
-
-# if defined __x86_64__ && __WORDSIZE == 32
-/* si_utime and si_stime must be 4 byte aligned for x32 to match the
-   kernel.  We align siginfo_t to 8 bytes so that si_utime and si_stime
-   are actually aligned to 8 bytes since their offsets are multiple of
-   8 bytes.  */
-typedef __clock_t __attribute__ ((__aligned__ (4))) __sigchld_clock_t;
-#  define __SI_ALIGNMENT __attribute__ ((__aligned__ (8)))
-# else
-typedef __clock_t __sigchld_clock_t;
-#  define __SI_ALIGNMENT
-# endif
-
-typedef struct
-  {
-    int si_signo;		/* Signal number.  */
-    int si_errno;		/* If non-zero, an errno value associated with
-				   this signal, as defined in <errno.h>.  */
-    int si_code;		/* Signal code.  */
-
-    union
-      {
-	int _pad[__SI_PAD_SIZE];
-
-	 /* kill().  */
-	struct
-	  {
-	    __pid_t si_pid;	/* Sending process ID.  */
-	    __uid_t si_uid;	/* Real user ID of sending process.  */
-	  } _kill;
-
-	/* POSIX.1b timers.  */
-	struct
-	  {
-	    int si_tid;		/* Timer ID.  */
-	    int si_overrun;	/* Overrun count.  */
-	    sigval_t si_sigval;	/* Signal value.  */
-	  } _timer;
-
-	/* POSIX.1b signals.  */
-	struct
-	  {
-	    __pid_t si_pid;	/* Sending process ID.  */
-	    __uid_t si_uid;	/* Real user ID of sending process.  */
-	    sigval_t si_sigval;	/* Signal value.  */
-	  } _rt;
-
-	/* SIGCHLD.  */
-	struct
-	  {
-	    __pid_t si_pid;	/* Which child.  */
-	    __uid_t si_uid;	/* Real user ID of sending process.  */
-	    int si_status;	/* Exit value or signal.  */
-	    __sigchld_clock_t si_utime;
-	    __sigchld_clock_t si_stime;
-	  } _sigchld;
-
-	/* SIGILL, SIGFPE, SIGSEGV, SIGBUS.  */
-	struct
-	  {
-	    void *si_addr;	/* Faulting insn/memory ref.  */
-	    short int si_addr_lsb;	/* Valid LSB of the reported address.  */
-	    struct
-	      {
-		void *_lower;
-		void *_upper;
-	      } si_addr_bnd;
-	  } _sigfault;
-
-	/* SIGPOLL.  */
-	struct
-	  {
-	    long int si_band;	/* Band event for SIGPOLL.  */
-	    int si_fd;
-	  } _sigpoll;
-
-	/* SIGSYS.  */
-	struct
-	  {
-	    void *_call_addr;	/* Calling user insn.  */
-	    int _syscall;	/* Triggering system call number.  */
-	    unsigned int _arch; /* AUDIT_ARCH_* of syscall.  */
-	  } _sigsys;
-      } _sifields;
-  } siginfo_t __SI_ALIGNMENT;
-
-
-/* X/Open requires some more fields with fixed names.  */
-# define si_pid		_sifields._kill.si_pid
-# define si_uid		_sifields._kill.si_uid
-# define si_timerid	_sifields._timer.si_tid
-# define si_overrun	_sifields._timer.si_overrun
-# define si_status	_sifields._sigchld.si_status
-# define si_utime	_sifields._sigchld.si_utime
-# define si_stime	_sifields._sigchld.si_stime
-# define si_value	_sifields._rt.si_sigval
-# define si_int		_sifields._rt.si_sigval.sival_int
-# define si_ptr		_sifields._rt.si_sigval.sival_ptr
-# define si_addr	_sifields._sigfault.si_addr
-# define si_addr_lsb	_sifields._sigfault.si_addr_lsb
-# define si_lower	_sifields._sigfault.si_addr_bnd._lower
-# define si_upper	_sifields._sigfault.si_addr_bnd._upper
-# define si_band	_sifields._sigpoll.si_band
-# define si_fd		_sifields._sigpoll.si_fd
-# define si_call_addr 	_sifields._sigsys._call_addr
-# define si_syscall	_sifields._sigsys._syscall
-# define si_arch	_sifields._sigsys._arch
-
-
-/* Values for `si_code'.  Positive values are reserved for kernel-generated
-   signals.  */
-enum
-{
-  SI_ASYNCNL = -60,		/* Sent by asynch name lookup completion.  */
-# define SI_ASYNCNL	SI_ASYNCNL
-  SI_TKILL = -6,		/* Sent by tkill.  */
-# define SI_TKILL	SI_TKILL
-  SI_SIGIO,			/* Sent by queued SIGIO. */
-# define SI_SIGIO	SI_SIGIO
-  SI_ASYNCIO,			/* Sent by AIO completion.  */
-# define SI_ASYNCIO	SI_ASYNCIO
-  SI_MESGQ,			/* Sent by real time mesq state change.  */
-# define SI_MESGQ	SI_MESGQ
-  SI_TIMER,			/* Sent by timer expiration.  */
-# define SI_TIMER	SI_TIMER
-  SI_QUEUE,			/* Sent by sigqueue.  */
-# define SI_QUEUE	SI_QUEUE
-  SI_USER,			/* Sent by kill, sigsend.  */
-# define SI_USER	SI_USER
-  SI_KERNEL = 0x80		/* Send by kernel.  */
-#define SI_KERNEL	SI_KERNEL
-};
-
-
-# if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
-/* `si_code' values for SIGILL signal.  */
-enum
-{
-  ILL_ILLOPC = 1,		/* Illegal opcode.  */
-#  define ILL_ILLOPC	ILL_ILLOPC
-  ILL_ILLOPN,			/* Illegal operand.  */
-#  define ILL_ILLOPN	ILL_ILLOPN
-  ILL_ILLADR,			/* Illegal addressing mode.  */
-#  define ILL_ILLADR	ILL_ILLADR
-  ILL_ILLTRP,			/* Illegal trap. */
-#  define ILL_ILLTRP	ILL_ILLTRP
-  ILL_PRVOPC,			/* Privileged opcode.  */
-#  define ILL_PRVOPC	ILL_PRVOPC
-  ILL_PRVREG,			/* Privileged register.  */
-#  define ILL_PRVREG	ILL_PRVREG
-  ILL_COPROC,			/* Coprocessor error.  */
-#  define ILL_COPROC	ILL_COPROC
-  ILL_BADSTK			/* Internal stack error.  */
-#  define ILL_BADSTK	ILL_BADSTK
-};
-
-/* `si_code' values for SIGFPE signal.  */
-enum
-{
-  FPE_INTDIV = 1,		/* Integer divide by zero.  */
-#  define FPE_INTDIV	FPE_INTDIV
-  FPE_INTOVF,			/* Integer overflow.  */
-#  define FPE_INTOVF	FPE_INTOVF
-  FPE_FLTDIV,			/* Floating point divide by zero.  */
-#  define FPE_FLTDIV	FPE_FLTDIV
-  FPE_FLTOVF,			/* Floating point overflow.  */
-#  define FPE_FLTOVF	FPE_FLTOVF
-  FPE_FLTUND,			/* Floating point underflow.  */
-#  define FPE_FLTUND	FPE_FLTUND
-  FPE_FLTRES,			/* Floating point inexact result.  */
-#  define FPE_FLTRES	FPE_FLTRES
-  FPE_FLTINV,			/* Floating point invalid operation.  */
-#  define FPE_FLTINV	FPE_FLTINV
-  FPE_FLTSUB			/* Subscript out of range.  */
-#  define FPE_FLTSUB	FPE_FLTSUB
-};
-
-/* `si_code' values for SIGSEGV signal.  */
-enum
-{
-  SEGV_MAPERR = 1,		/* Address not mapped to object.  */
-#  define SEGV_MAPERR	SEGV_MAPERR
-  SEGV_ACCERR			/* Invalid permissions for mapped object.  */
-#  define SEGV_ACCERR	SEGV_ACCERR
-};
-
-/* `si_code' values for SIGBUS signal.  */
-enum
-{
-  BUS_ADRALN = 1,		/* Invalid address alignment.  */
-#  define BUS_ADRALN	BUS_ADRALN
-  BUS_ADRERR,			/* Non-existant physical address.  */
-#  define BUS_ADRERR	BUS_ADRERR
-  BUS_OBJERR,			/* Object specific hardware error.  */
-#  define BUS_OBJERR	BUS_OBJERR
-  BUS_MCEERR_AR,		/* Hardware memory error: action required.  */
-#  define BUS_MCEERR_AR	BUS_MCEERR_AR
-  BUS_MCEERR_AO			/* Hardware memory error: action optional.  */
-#  define BUS_MCEERR_AO	BUS_MCEERR_AO
-};
-# endif
-
-# ifdef __USE_XOPEN_EXTENDED
-/* `si_code' values for SIGTRAP signal.  */
-enum
-{
-  TRAP_BRKPT = 1,		/* Process breakpoint.  */
-#  define TRAP_BRKPT	TRAP_BRKPT
-  TRAP_TRACE			/* Process trace trap.  */
-#  define TRAP_TRACE	TRAP_TRACE
-};
-# endif
-
-# if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
-/* `si_code' values for SIGCHLD signal.  */
-enum
-{
-  CLD_EXITED = 1,		/* Child has exited.  */
-#  define CLD_EXITED	CLD_EXITED
-  CLD_KILLED,			/* Child was killed.  */
-#  define CLD_KILLED	CLD_KILLED
-  CLD_DUMPED,			/* Child terminated abnormally.  */
-#  define CLD_DUMPED	CLD_DUMPED
-  CLD_TRAPPED,			/* Traced child has trapped.  */
-#  define CLD_TRAPPED	CLD_TRAPPED
-  CLD_STOPPED,			/* Child has stopped.  */
-#  define CLD_STOPPED	CLD_STOPPED
-  CLD_CONTINUED			/* Stopped child has continued.  */
-#  define CLD_CONTINUED	CLD_CONTINUED
-};
-
-/* `si_code' values for SIGPOLL signal.  */
-enum
-{
-  POLL_IN = 1,			/* Data input available.  */
-#  define POLL_IN	POLL_IN
-  POLL_OUT,			/* Output buffers available.  */
-#  define POLL_OUT	POLL_OUT
-  POLL_MSG,			/* Input message available.   */
-#  define POLL_MSG	POLL_MSG
-  POLL_ERR,			/* I/O error.  */
-#  define POLL_ERR	POLL_ERR
-  POLL_PRI,			/* High priority input available.  */
-#  define POLL_PRI	POLL_PRI
-  POLL_HUP			/* Device disconnected.  */
-#  define POLL_HUP	POLL_HUP
-};
-# endif
-
-# undef __need_siginfo_t
-#endif	/* !have siginfo_t && (have _SIGNAL_H || need siginfo_t).  */
-
-
-#if (defined _SIGNAL_H || defined __need_sigevent_t) \
-    && !defined __have_sigevent_t
-# define __have_sigevent_t	1
-
-/* Structure to transport application-defined values with signals.  */
-# define __SIGEV_MAX_SIZE	64
-# if __WORDSIZE == 64
-#  define __SIGEV_PAD_SIZE	((__SIGEV_MAX_SIZE / sizeof (int)) - 4)
-# else
-#  define __SIGEV_PAD_SIZE	((__SIGEV_MAX_SIZE / sizeof (int)) - 3)
-# endif
-
-/* Forward declaration.  */
-# ifndef __have_pthread_attr_t
-typedef union pthread_attr_t pthread_attr_t;
-#  define __have_pthread_attr_t	1
-# endif
-
-typedef struct sigevent
-  {
-    sigval_t sigev_value;
-    int sigev_signo;
-    int sigev_notify;
-
-    union
-      {
-	int _pad[__SIGEV_PAD_SIZE];
-
-	/* When SIGEV_SIGNAL and SIGEV_THREAD_ID set, LWP ID of the
-	   thread to receive the signal.  */
-	__pid_t _tid;
-
-	struct
-	  {
-	    void (*_function) (sigval_t);	/* Function to start.  */
-	    pthread_attr_t *_attribute;		/* Thread attributes.  */
-	  } _sigev_thread;
-      } _sigev_un;
-  } sigevent_t;
-
-/* POSIX names to access some of the members.  */
-# define sigev_notify_function   _sigev_un._sigev_thread._function
-# define sigev_notify_attributes _sigev_un._sigev_thread._attribute
-
-/* `sigev_notify' values.  */
-enum
-{
-  SIGEV_SIGNAL = 0,		/* Notify via signal.  */
-# define SIGEV_SIGNAL	SIGEV_SIGNAL
-  SIGEV_NONE,			/* Other notification: meaningless.  */
-# define SIGEV_NONE	SIGEV_NONE
-  SIGEV_THREAD,			/* Deliver via thread creation.  */
-# define SIGEV_THREAD	SIGEV_THREAD
-
-  SIGEV_THREAD_ID = 4		/* Send signal to specific thread.  */
-#define SIGEV_THREAD_ID	SIGEV_THREAD_ID
-};
-
-#endif	/* have _SIGNAL_H.  */
diff --git a/sysdeps/unix/sysv/linux/x86/sys/ucontext.h b/sysdeps/unix/sysv/linux/x86/sys/ucontext.h
index 5dd72acf48..60a3edfea0 100644
--- a/sysdeps/unix/sysv/linux/x86/sys/ucontext.h
+++ b/sysdeps/unix/sysv/linux/x86/sys/ucontext.h
@@ -23,6 +23,7 @@
 
 /* We need the signal context definitions even if they are not exposed
    by <signal.h>.  */
+#include <bits/types/__sigset_t.h>
 #include <bits/sigcontext.h>
 #include <bits/sigstack.h>
 #include <bits/types/struct_sigstack.h>