Merge remote-tracking branch 'origin/master' into prelink

* origin/master: (61 commits)
  fts: fix warning due to old-style function definition
  ldso_tls: fix compiler warning due to missing cast
  resolv: fix bug in res_init with ipv6 nameservers
  config: Fix passing defconfig args
  buildsys: pt-initfini.s depends on uClibc_config.h
  libdl: search for ELF_RTYPE_CLASS_DLSYM in dlsym()
  resolv: try next server on SERVFAIL
  getaddrinfo: allow numeric service without any hints
  bump version to 0.9.33-git
  nptl/pthread: Correct path for machine specific pt-initfini.c
  ctor/dtor nptl: Fix init and fini function compilation
  Rules.mak: Rearrange appending UCLIBC_EXTRA_CFLAGS to CFLAGS
  ARM: remove EABI/OABI selection
  ARM: detect BX availibility at build time
  ARM: #include <bits/arm_asm.h> where __USE_BX__ is used
  ARM: transform the EABI/OABI choice into a boolean
  ARM: remove sub-arch/variants selection from menuconfig
  ARM: introduce blind options to select & force THUMB mode
  ARM: reorder "Use BX" option
  Fix __libc_epoll_pwait compile failure on x86
  ...

Conflicts:
	ldso/libdl/libdl.c

Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>

41 files changed, 880 insertions, 298 deletions

diff --git a/libc/inet/Makefile.in b/libc/inet/Makefile.in
index abcf2f7d7..d58822074 100644
--- a/libc/inet/Makefile.in
+++ b/libc/inet/Makefile.in
@@ -44,11 +44,12 @@ CSRC-$(findstring y,$(UCLIBC_HAS_IPV4)$(UCLIBC_HAS_IPV6)) += \
 ## CSRC-y += encodep.c decodep.c formquery.c
 
 # multi source socketcalls.c
-socketcalls_CSRC += \
+socketcalls_CSRC-y += \
 	accept.c bind.c connect.c getpeername.c getsockname.c \
 	getsockopt.c listen.c recv.c recvfrom.c recvmsg.c send.c sendmsg.c \
 	sendto.c setsockopt.c shutdown.c socket.c socketpair.c
-CSRC-$(UCLIBC_HAS_SOCKET) += $(socketcalls_CSRC) opensock.c
+socketcalls_CSRC-$(UCLIBC_LINUX_SPECIFIC) += accept4.c
+CSRC-$(UCLIBC_HAS_SOCKET) += $(socketcalls_CSRC-y) opensock.c
 
 CSRC-$(findstring y,$(UCLIBC_HAS_SOCKET)$(UCLIBC_HAS_IPV4)$(UCLIBC_HAS_IPV6)) += ethers.c ether_addr.c
 
diff --git a/libc/inet/accept4.c b/libc/inet/accept4.c
new file mode 100644
index 000000000..e2fdd6c2f
--- /dev/null
+++ b/libc/inet/accept4.c
@@ -0,0 +1,8 @@
+/*
+ * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#define L_accept4
+#include "socketcalls.c"
diff --git a/libc/inet/getaddrinfo.c b/libc/inet/getaddrinfo.c
index 1a77c5199..e7511f6c4 100644
--- a/libc/inet/getaddrinfo.c
+++ b/libc/inet/getaddrinfo.c
@@ -820,13 +820,6 @@ getaddrinfo(const char *name, const char *service,
 			if (hints->ai_flags & AI_NUMERICSERV)
 				return EAI_NONAME;
 			gaih_service.num = -1;
-		} else {
-			/*
-			 * Can't specify a numerical socket unless a protocol
-			 * family was given.
-			 */
-			if (hints->ai_socktype == 0 && hints->ai_protocol == 0)
-				return EAI_SERVICE;
 		}
 		pservice = &gaih_service;
 	} else
diff --git a/libc/inet/resolv.c b/libc/inet/resolv.c
index 021d5bf5d..dc8a752fa 100644
--- a/libc/inet/resolv.c
+++ b/libc/inet/resolv.c
@@ -1461,7 +1461,7 @@ int attribute_hidden __dns_lookup(const char *name,
 		/* bug 660 says we treat negative response as an error
 		 * and retry, which is, eh, an error. :)
 		 * We were incurring long delays because of this. */
-		if (h.rcode == NXDOMAIN) {
+		if (h.rcode == NXDOMAIN || h.rcode == SERVFAIL) {
 			/* if possible, try next search domain */
 			if (!ends_with_dot) {
 				DPRINTF("variant:%d sdomains:%d\n", variant, sdomains);
@@ -2964,7 +2964,7 @@ int res_init(void)
 		if (__nameserver[i].sa.sa_family == AF_INET6
 		 && m < ARRAY_SIZE(rp->_u._ext.nsaddrs)
 		) {
-			struct sockaddr_in6 *sa6 = malloc(sizeof(sa6));
+			struct sockaddr_in6 *sa6 = malloc(sizeof(*sa6));
 			if (sa6) {
 				*sa6 = __nameserver[i].sa6; /* struct copy */
 				rp->_u._ext.nsaddrs[m] = sa6;
@@ -2981,7 +2981,7 @@ int res_init(void)
 
 #else /* IPv6 only */
 	while (m < ARRAY_SIZE(rp->_u._ext.nsaddrs) && i < __nameservers) {
-		struct sockaddr_in6 *sa6 = malloc(sizeof(sa6));
+		struct sockaddr_in6 *sa6 = malloc(sizeof(*sa6));
 		if (sa6) {
 			*sa6 = __nameserver[i].sa6; /* struct copy */
 			rp->_u._ext.nsaddrs[m] = sa6;
diff --git a/libc/inet/socketcalls.c b/libc/inet/socketcalls.c
index 42a5a563f..aae7e93bf 100644
--- a/libc/inet/socketcalls.c
+++ b/libc/inet/socketcalls.c
@@ -31,6 +31,7 @@ extern int __socketcall(int call, unsigned long *args) attribute_hidden;
 #define SYS_GETSOCKOPT  15
 #define SYS_SENDMSG     16
 #define SYS_RECVMSG     17
+#define SYS_ACCEPT4     18
 #endif
 
 #ifdef __UCLIBC_HAS_THREADS_NATIVE__
@@ -82,6 +83,46 @@ weak_alias(__libc_accept,accept)
 libc_hidden_weak(accept)
 #endif
 
+#ifdef L_accept4
+#ifdef __NR_accept4
+# define __NR___sys_accept4  __NR_accept4
+static _syscall4(int, __sys_accept4, int, fd, struct sockaddr *, addr, socklen_t *, addrlen, int, flags)
+int accept4(int fd, struct sockaddr *addr, socklen_t * addrlen, int flags)
+{
+	if (SINGLE_THREAD_P)
+		return __sys_accept4(fd, addr, addrlen, flags);
+#ifdef __UCLIBC_HAS_THREADS_NATIVE__
+	else {
+		int oldtype = LIBC_CANCEL_ASYNC ();
+		int result = __sys_accept4(fd, addr, addrlen, flags);
+		LIBC_CANCEL_RESET (oldtype);
+		return result;
+	}
+#endif
+}
+#elif defined(__NR_socketcall)
+int accept4(int fd, struct sockaddr *addr, socklen_t *addrlen, int flags)
+{
+	unsigned long args[4];
+
+	args[0] = fd;
+	args[1] = (unsigned long) addr;
+	args[2] = (unsigned long) addrlen;
+	args[3] = flags;
+	if (SINGLE_THREAD_P)
+		return __socketcall(SYS_ACCEPT4, args);
+#ifdef __UCLIBC_HAS_THREADS_NATIVE__
+	else {
+		int oldtype = LIBC_CANCEL_ASYNC ();
+		int result = __socketcall(SYS_ACCEPT4, args);
+		LIBC_CANCEL_RESET (oldtype);
+		return result;
+	}
+#endif
+}
+#endif
+#endif
+
 #ifdef L_bind
 #ifdef __NR_bind
 _syscall3(int, bind, int, sockfd, const struct sockaddr *, myaddr, socklen_t, addrlen)
@@ -560,3 +601,4 @@ int socketpair(int family, int type, int protocol, int sockvec[2])
 }
 #endif
 #endif
+
diff --git a/libc/misc/fts/fts.c b/libc/misc/fts/fts.c
index ce5d1586b..deb8f4adc 100644
--- a/libc/misc/fts/fts.c
+++ b/libc/misc/fts/fts.c
@@ -87,10 +87,8 @@ static int      fts_safe_changedir (FTS *, FTSENT *, int, const char *)
 #define	BREAD		3		/* fts_read */
 
 FTS *
-fts_open(argv, options, compar)
-	char * const *argv;
-	register int options;
-	int (*compar) (const FTSENT **, const FTSENT **);
+fts_open( char * const *argv, register int options,
+		int (*compar) (const FTSENT **, const FTSENT **))
 {
 	register FTS *sp;
 	register FTSENT *p, *root;
@@ -204,9 +202,7 @@ mem1:	free(sp);
 
 static void
 internal_function
-fts_load(sp, p)
-	FTS *sp;
-	register FTSENT *p;
+fts_load(FTS *sp, register FTSENT *p)
 {
 	register int len;
 	register char *cp;
@@ -230,8 +226,7 @@ fts_load(sp, p)
 }
 
 int
-fts_close(sp)
-	FTS *sp;
+fts_close(FTS *sp)
 {
 	register FTSENT *freep, *p;
 	int saved_errno;
@@ -284,8 +279,7 @@ fts_close(sp)
 	    ? p->fts_pathlen - 1 : p->fts_pathlen)
 
 FTSENT *
-fts_read(sp)
-	register FTS *sp;
+fts_read(register FTS *sp)
 {
 	register FTSENT *p, *tmp;
 	register int instr;
@@ -481,10 +475,7 @@ name:		t = sp->fts_path + NAPPEND(p->fts_parent);
  */
 /* ARGSUSED */
 int
-fts_set(sp, p, instr)
-	FTS *sp;
-	FTSENT *p;
-	int instr;
+fts_set(FTS *sp, FTSENT *p, int instr)
 {
 	if (instr != 0 && instr != FTS_AGAIN && instr != FTS_FOLLOW &&
 	    instr != FTS_NOINSTR && instr != FTS_SKIP) {
@@ -496,9 +487,7 @@ fts_set(sp, p, instr)
 }
 
 FTSENT *
-fts_children(sp, instr)
-	register FTS *sp;
-	int instr;
+fts_children(register FTS *sp, int instr)
 {
 	register FTSENT *p;
 	int fd;
@@ -579,9 +568,7 @@ fts_children(sp, instr)
  */
 static FTSENT *
 internal_function
-fts_build(sp, type)
-	register FTS *sp;
-	int type;
+fts_build(register FTS *sp, int type)
 {
 	register struct dirent *dp;
 	register FTSENT *p, *head;
@@ -851,10 +838,7 @@ mem1:				saved_errno = errno;
 
 static u_short
 internal_function
-fts_stat(sp, p, follow)
-	FTS *sp;
-	register FTSENT *p;
-	int follow;
+fts_stat(FTS *sp, register FTSENT *p, int follow)
 {
 	register FTSENT *t;
 	register dev_t dev;
@@ -935,10 +919,7 @@ err:		memset(sbp, 0, sizeof(struct stat));
 
 static FTSENT *
 internal_function
-fts_sort(sp, head, nitems)
-	FTS *sp;
-	FTSENT *head;
-	register int nitems;
+fts_sort(FTS *sp, FTSENT *head, register int nitems)
 {
 	register FTSENT **ap, *p;
 
@@ -973,10 +954,7 @@ fts_sort(sp, head, nitems)
 
 static FTSENT *
 internal_function
-fts_alloc(sp, name, namelen)
-	FTS *sp;
-	const char *name;
-	size_t namelen;
+fts_alloc(FTS *sp, const char *name, size_t namelen)
 {
 	register FTSENT *p;
 	size_t len;
@@ -1013,8 +991,7 @@ fts_alloc(sp, name, namelen)
 
 static void
 internal_function
-fts_lfree(head)
-	register FTSENT *head;
+fts_lfree(register FTSENT *head)
 {
 	register FTSENT *p;
 
@@ -1033,9 +1010,7 @@ fts_lfree(head)
  */
 static int
 internal_function
-fts_palloc(sp, more)
-	FTS *sp;
-	size_t more;
+fts_palloc(FTS *sp, size_t more)
 {
 	char *p;
 
@@ -1067,9 +1042,7 @@ fts_palloc(sp, more)
  */
 static void
 internal_function
-fts_padjust(sp, head)
-	FTS *sp;
-	FTSENT *head;
+fts_padjust(FTS *sp, FTSENT *head)
 {
 	FTSENT *p;
 	char *addr = sp->fts_path;
@@ -1094,8 +1067,7 @@ fts_padjust(sp, head)
 
 static size_t
 internal_function
-fts_maxarglen(argv)
-	char * const *argv;
+fts_maxarglen(char * const *argv)
 {
 	size_t len, max;
 
@@ -1112,11 +1084,7 @@ fts_maxarglen(argv)
  */
 static int
 internal_function
-fts_safe_changedir(sp, p, fd, path)
-	FTS *sp;
-	FTSENT *p;
-	int fd;
-	const char *path;
+fts_safe_changedir(FTS *sp, FTSENT *p, int fd, const char *path)
 {
 	int ret, oerrno, newfd;
 	struct stat64 sb;
diff --git a/libc/misc/wordexp/wordexp.c b/libc/misc/wordexp/wordexp.c
index 4c25d2860..700ea2c23 100644
--- a/libc/misc/wordexp/wordexp.c
+++ b/libc/misc/wordexp/wordexp.c
@@ -20,6 +20,7 @@
    Boston, MA 02111-1307, USA.  */
 
 #include <features.h>
+#include <bits/kernel-features.h>
 #include <sys/types.h>
 #include <sys/wait.h>
 #include <fcntl.h>
@@ -757,16 +758,21 @@ exec_comm_child(char *comm, int *fildes, int showerr, int noexec)
 
 	/* Redirect output.  */
 	fd = fildes[1];
-	if (fd != 1) {
-		dup2(fd, 1);
+	if (likely(fd != STDOUT_FILENO)) {
+		dup2(fd, STDOUT_FILENO);
 		close(fd);
 	}
-
+#if defined O_CLOEXEC && defined __UCLIBC_LINUX_SPECIFIC__ && defined __ASSUME_PIPE2
+	else {
+		/* Reset the close-on-exec flag (if necessary).  */
+		fcntl (fd, F_SETFD, 0);
+	}
+#endif
 	/* Redirect stderr to /dev/null if we have to.  */
 	if (showerr == 0) {
-		close(2);
+		close(STDERR_FILENO);
 		fd = open(_PATH_DEVNULL, O_WRONLY);
-		if (fd >= 0 && fd != 2) {
+		if (fd >= 0 && fd != STDERR_FILENO) {
 			dup2(fd, 2);
 			close(fd);
 		}
@@ -802,10 +808,15 @@ exec_comm(char *comm, char **word, size_t * word_length,
 	/* Don't fork() unless necessary */
 	if (!comm || !*comm)
 		return 0;
-
-	if (pipe(fildes))
+#if defined O_CLOEXEC && defined __UCLIBC_LINUX_SPECIFIC__ && defined __ASSUME_PIPE2
+	if (pipe2(fildes, O_CLOEXEC) < 0)
 		/* Bad */
 		return WRDE_NOSPACE;
+#else
+	if (pipe(fildes) < 0)
+		/* Bad */
+		return WRDE_NOSPACE;
+#endif
 
 	if ((pid = fork()) < 0) {
 		/* Bad */
diff --git a/libc/stdlib/__uc_malloc.c b/libc/stdlib/__uc_malloc.c
index 2a2e223ef..449f014fc 100644
--- a/libc/stdlib/__uc_malloc.c
+++ b/libc/stdlib/__uc_malloc.c
@@ -39,6 +39,7 @@ void *__uc_malloc(size_t size)
 			return p;
 		if (!__uc_malloc_failed)
 			_exit(1);
+		free(p);
 		__uc_malloc_failed(size);
 	}
 }
diff --git a/libc/sysdeps/linux/arm/Makefile.arch b/libc/sysdeps/linux/arm/Makefile.arch
index b53c539bf..14279e0d7 100644
--- a/libc/sysdeps/linux/arm/Makefile.arch
+++ b/libc/sysdeps/linux/arm/Makefile.arch
@@ -24,7 +24,12 @@ ifeq ($(UCLIBC_HAS_ADVANCED_REALTIME),y)
 CSRC += posix_fadvise.c posix_fadvise64.c
 endif
 
-ifeq ($(CONFIG_ARM_EABI),y)
+# Is our compiler set up for EABI ?
+IS_EABI:=$(shell $(CC) $(CFLAGS) -x c - -E -dM </dev/null 2>/dev/null \
+                 |sed -r -e '/^\#[[:space:]]*define[[:space:]]+__ARM_EABI__([[:space:]]+1)?$$/!d; s/.+/y/;' \
+          )
+
+ifeq ($(IS_EABI),y)
 CSRC += aeabi_assert.c aeabi_atexit.c aeabi_errno_addr.c \
 	aeabi_localeconv.c aeabi_memclr.c aeabi_memcpy.c \
 	aeabi_memmove.c aeabi_memset.c find_exidx.c
@@ -37,7 +42,7 @@ else
 CSRC += syscall.c
 endif
 
-ifeq ($(CONFIG_ARM_EABI),y)
+ifeq ($(IS_EABI),y)
 libc-static-y += $(ARCH_OUT)/aeabi_lcsts.o $(ARCH_OUT)/aeabi_math.o \
 	$(ARCH_OUT)/aeabi_sighandlers.o
 libc-nonshared-y += $(ARCH_OUT)/aeabi_lcsts.os $(ARCH_OUT)/aeabi_math.os \
diff --git a/libc/sysdeps/linux/arm/bits/arm_asm.h b/libc/sysdeps/linux/arm/bits/arm_asm.h
index 1d87df6eb..921c9a3c9 100644
--- a/libc/sysdeps/linux/arm/bits/arm_asm.h
+++ b/libc/sysdeps/linux/arm/bits/arm_asm.h
@@ -24,5 +24,12 @@
 #define THUMB1_ONLY 1
 #endif
 
-#endif /* _ARM_ASM_H */
+#if defined(__USE_BX__)
+# if (   defined (__ARM_ARCH_2__)  || defined (__ARM_ARCH_3__) \
+      || defined (__ARM_ARCH_3M__) || defined (__ARM_ARCH_4__) \
+     )
+#  error Use of BX was requested, but is not available on the target processor.
+# endif /* ARCH level */
+#endif /* __USE_BX__ */
 
+#endif /* _ARM_ASM_H */
diff --git a/libc/sysdeps/linux/arm/bits/huge_val.h b/libc/sysdeps/linux/arm/bits/huge_val.h
index a215f3c0b..745e0bbd5 100644
--- a/libc/sysdeps/linux/arm/bits/huge_val.h
+++ b/libc/sysdeps/linux/arm/bits/huge_val.h
@@ -32,7 +32,7 @@
 # define HUGE_VAL (__extension__ 0x1.0p2047)
 #elif defined __GNUC__
 
-#ifndef __CONFIG_ARM_EABI__
+#ifndef __ARM_EABI__
 # define HUGE_VAL \
   (__extension__							      \
    ((union { unsigned __l __attribute__((__mode__(__DI__))); double __d; })   \
@@ -50,7 +50,7 @@
 
 typedef union { unsigned char __c[8]; double __d; } __huge_val_t;
 
-#ifndef __CONFIG_ARM_EABI__
+#ifndef __ARM_EABI__
 # if __BYTE_ORDER == __BIG_ENDIAN
 #  define __HUGE_VAL_bytes	{ 0, 0, 0, 0, 0x7f, 0xf0, 0, 0 }
 # endif
diff --git a/libc/sysdeps/linux/arm/crtn.S b/libc/sysdeps/linux/arm/crtn.S
index de01b38dc..a4752c186 100644
--- a/libc/sysdeps/linux/arm/crtn.S
+++ b/libc/sysdeps/linux/arm/crtn.S
@@ -15,7 +15,6 @@
 	.arm
 	ldmdb	fp, {r4, r5, r6, r7, r8, r9, sl, fp, sp, pc}
 #endif
-	.size	_init, .-_init
 	
 	.section .fini
 	.global	_fini
@@ -29,7 +28,6 @@
 	.arm
 	ldmdb	fp, {r4, r5, r6, r7, r8, r9, sl, fp, sp, pc}
 #endif
-	.size	_fini, .-_fini
 	
 	@ In fact this is modified to 3.4.4
 	.ident	"GCC: (GNU) 3.3.2 20031005 (Debian prerelease)"
diff --git a/libc/sysdeps/linux/arm/sysdep.h b/libc/sysdeps/linux/arm/sysdep.h
index 013f88cdd..e498695be 100644
--- a/libc/sysdeps/linux/arm/sysdep.h
+++ b/libc/sysdeps/linux/arm/sysdep.h
@@ -21,6 +21,7 @@
 #define _LINUX_ARM_SYSDEP_H 1
 
 #include <common/sysdep.h>
+#include <bits/arm_asm.h>
 
 #include <sys/syscall.h>
 /* For Linux we can use the system call table in the header file
diff --git a/libc/sysdeps/linux/arm/unwind.h b/libc/sysdeps/linux/arm/unwind.h
new file mode 100644
index 000000000..eeb9cf8b6
--- /dev/null
+++ b/libc/sysdeps/linux/arm/unwind.h
@@ -0,0 +1,279 @@
+/* Header file for the ARM EABI unwinder
+   Copyright (C) 2003, 2004, 2005, 2009  Free Software Foundation, Inc.
+   Contributed by Paul Brook
+
+   This file is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by the
+   Free Software Foundation; either version 2, or (at your option) any
+   later version.
+
+   In addition to the permissions in the GNU General Public License, the
+   Free Software Foundation gives you unlimited permission to link the
+   compiled version of this file into combinations with other programs,
+   and to distribute those combinations without any restriction coming
+   from the use of this file.  (The General Public License restrictions
+   do apply in other respects; for example, they cover modification of
+   the file, and distribution when not linked into a combine
+   executable.)
+
+   This file 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
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; see the file COPYING.  If not, write to
+   the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.  */
+
+/* Language-independent unwinder header public defines.  This contains both
+   ABI defined objects, and GNU support routines.  */
+
+#ifndef UNWIND_ARM_H
+#define UNWIND_ARM_H
+
+#define __ARM_EABI_UNWINDER__ 1
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+  typedef unsigned _Unwind_Word __attribute__((__mode__(__word__)));
+  typedef signed _Unwind_Sword __attribute__((__mode__(__word__)));
+  typedef unsigned _Unwind_Ptr __attribute__((__mode__(__pointer__)));
+  typedef unsigned _Unwind_Internal_Ptr __attribute__((__mode__(__pointer__)));
+  typedef _Unwind_Word _uw;
+  typedef unsigned _uw64 __attribute__((mode(__DI__)));
+  typedef unsigned _uw16 __attribute__((mode(__HI__)));
+  typedef unsigned _uw8 __attribute__((mode(__QI__)));
+
+  typedef enum
+    {
+      _URC_OK = 0,       /* operation completed successfully */
+      _URC_FOREIGN_EXCEPTION_CAUGHT = 1,
+      _URC_END_OF_STACK = 5,
+      _URC_HANDLER_FOUND = 6,
+      _URC_INSTALL_CONTEXT = 7,
+      _URC_CONTINUE_UNWIND = 8,
+      _URC_FAILURE = 9   /* unspecified failure of some kind */
+    }
+  _Unwind_Reason_Code;
+
+  typedef enum
+    {
+      _US_VIRTUAL_UNWIND_FRAME = 0,
+      _US_UNWIND_FRAME_STARTING = 1,
+      _US_UNWIND_FRAME_RESUME = 2,
+      _US_ACTION_MASK = 3,
+      _US_FORCE_UNWIND = 8,
+      _US_END_OF_STACK = 16
+    }
+  _Unwind_State;
+
+  /* Provided only for for compatibility with existing code.  */
+  typedef int _Unwind_Action;
+#define _UA_SEARCH_PHASE	1
+#define _UA_CLEANUP_PHASE	2
+#define _UA_HANDLER_FRAME	4
+#define _UA_FORCE_UNWIND	8
+#define _UA_END_OF_STACK	16
+#define _URC_NO_REASON 	_URC_OK
+
+  typedef struct _Unwind_Control_Block _Unwind_Control_Block;
+  typedef struct _Unwind_Context _Unwind_Context;
+  typedef _uw _Unwind_EHT_Header;
+
+
+  /* UCB: */
+
+  struct _Unwind_Control_Block
+    {
+#ifdef _LIBC
+      /* For the benefit of code which assumes this is a scalar.  All
+	 glibc ever does is clear it.  */
+      _uw64 exception_class;
+#else
+      char exception_class[8];
+#endif
+      void (*exception_cleanup)(_Unwind_Reason_Code, _Unwind_Control_Block *);
+      /* Unwinder cache, private fields for the unwinder's use */
+      struct
+	{
+	  _uw reserved1;  /* Forced unwind stop fn, 0 if not forced */
+	  _uw reserved2;  /* Personality routine address */
+	  _uw reserved3;  /* Saved callsite address */
+	  _uw reserved4;  /* Forced unwind stop arg */
+	  _uw reserved5;
+	}
+      unwinder_cache;
+      /* Propagation barrier cache (valid after phase 1): */
+      struct
+	{
+	  _uw sp;
+	  _uw bitpattern[5];
+	}
+      barrier_cache;
+      /* Cleanup cache (preserved over cleanup): */
+      struct
+	{
+	  _uw bitpattern[4];
+	}
+      cleanup_cache;
+      /* Pr cache (for pr's benefit): */
+      struct
+	{
+	  _uw fnstart;			/* function start address */
+	  _Unwind_EHT_Header *ehtp;	/* pointer to EHT entry header word */
+	  _uw additional;		/* additional data */
+	  _uw reserved1;
+	}
+      pr_cache;
+      long long int :0;	/* Force alignment to 8-byte boundary */
+    };
+
+  /* Virtual Register Set*/
+
+  typedef enum
+    {
+      _UVRSC_CORE = 0,      /* integer register */
+      _UVRSC_VFP = 1,       /* vfp */
+      _UVRSC_FPA = 2,       /* fpa */
+      _UVRSC_WMMXD = 3,     /* Intel WMMX data register */
+      _UVRSC_WMMXC = 4      /* Intel WMMX control register */
+    }
+  _Unwind_VRS_RegClass;
+
+  typedef enum
+    {
+      _UVRSD_UINT32 = 0,
+      _UVRSD_VFPX = 1,
+      _UVRSD_FPAX = 2,
+      _UVRSD_UINT64 = 3,
+      _UVRSD_FLOAT = 4,
+      _UVRSD_DOUBLE = 5
+    }
+  _Unwind_VRS_DataRepresentation;
+
+  typedef enum
+    {
+      _UVRSR_OK = 0,
+      _UVRSR_NOT_IMPLEMENTED = 1,
+      _UVRSR_FAILED = 2
+    }
+  _Unwind_VRS_Result;
+
+  /* Frame unwinding state.  */
+  typedef struct
+    {
+      /* The current word (bytes packed msb first).  */
+      _uw data;
+      /* Pointer to the next word of data.  */
+      _uw *next;
+      /* The number of bytes left in this word.  */
+      _uw8 bytes_left;
+      /* The number of words pointed to by ptr.  */
+      _uw8 words_left;
+    }
+  __gnu_unwind_state;
+
+  typedef _Unwind_Reason_Code (*personality_routine) (_Unwind_State,
+      _Unwind_Control_Block *, _Unwind_Context *);
+
+  _Unwind_VRS_Result _Unwind_VRS_Set(_Unwind_Context *, _Unwind_VRS_RegClass,
+                                     _uw, _Unwind_VRS_DataRepresentation,
+                                     void *);
+
+  _Unwind_VRS_Result _Unwind_VRS_Get(_Unwind_Context *, _Unwind_VRS_RegClass,
+                                     _uw, _Unwind_VRS_DataRepresentation,
+                                     void *);
+
+  _Unwind_VRS_Result _Unwind_VRS_Pop(_Unwind_Context *, _Unwind_VRS_RegClass,
+                                     _uw, _Unwind_VRS_DataRepresentation);
+
+
+  /* Support functions for the PR.  */
+#define _Unwind_Exception _Unwind_Control_Block
+  typedef char _Unwind_Exception_Class[8];
+
+  void * _Unwind_GetLanguageSpecificData (_Unwind_Context *);
+  _Unwind_Ptr _Unwind_GetRegionStart (_Unwind_Context *);
+
+  /* These two should never be used.  */
+  _Unwind_Ptr _Unwind_GetDataRelBase (_Unwind_Context *);
+  _Unwind_Ptr _Unwind_GetTextRelBase (_Unwind_Context *);
+
+  /* Interface functions: */
+  _Unwind_Reason_Code _Unwind_RaiseException(_Unwind_Control_Block *ucbp);
+  void __attribute__((noreturn)) _Unwind_Resume(_Unwind_Control_Block *ucbp);
+  _Unwind_Reason_Code _Unwind_Resume_or_Rethrow (_Unwind_Control_Block *ucbp);
+
+  typedef _Unwind_Reason_Code (*_Unwind_Stop_Fn)
+       (int, _Unwind_Action, _Unwind_Exception_Class,
+	_Unwind_Control_Block *, struct _Unwind_Context *, void *);
+  _Unwind_Reason_Code _Unwind_ForcedUnwind (_Unwind_Control_Block *,
+					    _Unwind_Stop_Fn, void *);
+  _Unwind_Word _Unwind_GetCFA (struct _Unwind_Context *);
+  void _Unwind_Complete(_Unwin