let musl depend on these headers so they are staged along with libc

Signed-off-by: Khem Raj <raj.k...@gmail.com>
---
 meta/recipes-core/bsd-headers/bsd-headers.bb       |  25 +
 .../bsd-headers/bsd-headers/sys-queue.h            | 846 +++++++++++++++++++++
 .../bsd-headers/bsd-headers/sys-tree.h             | 761 ++++++++++++++++++
 meta/recipes-core/musl/musl_git.bb                 |   1 +
 4 files changed, 1633 insertions(+)
 create mode 100644 meta/recipes-core/bsd-headers/bsd-headers.bb
 create mode 100644 meta/recipes-core/bsd-headers/bsd-headers/sys-queue.h
 create mode 100644 meta/recipes-core/bsd-headers/bsd-headers/sys-tree.h

diff --git a/meta/recipes-core/bsd-headers/bsd-headers.bb 
b/meta/recipes-core/bsd-headers/bsd-headers.bb
new file mode 100644
index 0000000..ae659ab
--- /dev/null
+++ b/meta/recipes-core/bsd-headers/bsd-headers.bb
@@ -0,0 +1,25 @@
+# Copyright (C) 2016 Khem Raj <raj.k...@gmail.com>
+# Released under the MIT license (see COPYING.MIT for the terms)
+
+DESCRIPTION = "bsd compatible headers"
+LICENSE = "BSD-3-Clause && BSD-2-Clause"
+SECTION = "devel"
+
+SRC_URI = "file://sys-queue.h \
+           file://sys-tree.h \
+          "
+do_configure[noexec] = "1"
+do_compile[noexec] = "1"
+
+INHIBIT_DEFAULT_DEPS = "1"
+
+S = "${WORKDIR}"
+
+do_install() {
+       install -Dm 0644 ${S}/sys-queue.h ${D}${includedir}/sys/queue.h
+       install -Dm 0644 ${S}/sys-tree.h ${D}${includedir}/sys/tree.h
+}
+#
+# We will skip parsing for non-musl systems
+#
+COMPATIBLE_HOST = ".*-musl.*"
diff --git a/meta/recipes-core/bsd-headers/bsd-headers/sys-queue.h 
b/meta/recipes-core/bsd-headers/bsd-headers/sys-queue.h
new file mode 100644
index 0000000..99d01a5
--- /dev/null
+++ b/meta/recipes-core/bsd-headers/bsd-headers/sys-queue.h
@@ -0,0 +1,846 @@
+/*     $NetBSD: queue.h,v 1.68 2014/11/19 08:10:01 uebayasi Exp $      */
+
+/*
+ * Copyright (c) 1991, 1993
+ *     The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *     @(#)queue.h     8.5 (Berkeley) 8/20/94
+ */
+
+#ifndef        _SYS_QUEUE_H_
+#define        _SYS_QUEUE_H_
+
+/*
+ * This file defines five types of data structures: singly-linked lists,
+ * lists, simple queues, tail queues, and circular queues.
+ *
+ * A singly-linked list is headed by a single forward pointer. The
+ * elements are singly linked for minimum space and pointer manipulation
+ * overhead at the expense of O(n) removal for arbitrary elements. New
+ * elements can be added to the list after an existing element or at the
+ * head of the list.  Elements being removed from the head of the list
+ * should use the explicit macro for this purpose for optimum
+ * efficiency. A singly-linked list may only be traversed in the forward
+ * direction.  Singly-linked lists are ideal for applications with large
+ * datasets and few or no removals or for implementing a LIFO queue.
+ *
+ * A list is headed by a single forward pointer (or an array of forward
+ * pointers for a hash table header). The elements are doubly linked
+ * so that an arbitrary element can be removed without a need to
+ * traverse the list. New elements can be added to the list before
+ * or after an existing element or at the head of the list. A list
+ * may only be traversed in the forward direction.
+ *
+ * A simple queue is headed by a pair of pointers, one the head of the
+ * list and the other to the tail of the list. The elements are singly
+ * linked to save space, so elements can only be removed from the
+ * head of the list. New elements can be added to the list after
+ * an existing element, at the head of the list, or at the end of the
+ * list. A simple queue may only be traversed in the forward direction.
+ *
+ * A tail queue is headed by a pair of pointers, one to the head of the
+ * list and the other to the tail of the list. The elements are doubly
+ * linked so that an arbitrary element can be removed without a need to
+ * traverse the list. New elements can be added to the list before or
+ * after an existing element, at the head of the list, or at the end of
+ * the list. A tail queue may be traversed in either direction.
+ *
+ * A circle queue is headed by a pair of pointers, one to the head of the
+ * list and the other to the tail of the list. The elements are doubly
+ * linked so that an arbitrary element can be removed without a need to
+ * traverse the list. New elements can be added to the list before or after
+ * an existing element, at the head of the list, or at the end of the list.
+ * A circle queue may be traversed in either direction, but has a more
+ * complex end of list detection.
+ *
+ * For details on the use of these macros, see the queue(3) manual page.
+ */
+
+/*
+ * Include the definition of NULL only on NetBSD because sys/null.h
+ * is not available elsewhere.  This conditional makes the header
+ * portable and it can simply be dropped verbatim into any system.
+ * The caveat is that on other systems some other header
+ * must provide NULL before the macros can be used.
+ */
+#ifdef __NetBSD__
+#include <sys/null.h>
+#endif
+
+#if defined(QUEUEDEBUG)
+# if defined(_KERNEL)
+#  define QUEUEDEBUG_ABORT(...) panic(__VA_ARGS__)
+# else
+#  include <err.h>
+#  define QUEUEDEBUG_ABORT(...) err(1, __VA_ARGS__)
+# endif
+#endif
+
+/*
+ * Singly-linked List definitions.
+ */
+#define        SLIST_HEAD(name, type)                                          
\
+struct name {                                                          \
+       struct type *slh_first; /* first element */                     \
+}
+
+#define        SLIST_HEAD_INITIALIZER(head)                                    
\
+       { NULL }
+
+#define        SLIST_ENTRY(type)                                               
\
+struct {                                                               \
+       struct type *sle_next;  /* next element */                      \
+}
+
+/*
+ * Singly-linked List access methods.
+ */
+#define        SLIST_FIRST(head)       ((head)->slh_first)
+#define        SLIST_END(head)         NULL
+#define        SLIST_EMPTY(head)       ((head)->slh_first == NULL)
+#define        SLIST_NEXT(elm, field)  ((elm)->field.sle_next)
+
+#define        SLIST_FOREACH(var, head, field)                                 
\
+       for((var) = (head)->slh_first;                                  \
+           (var) != SLIST_END(head);                                   \
+           (var) = (var)->field.sle_next)
+
+#define        SLIST_FOREACH_SAFE(var, head, field, tvar)                      
\
+       for ((var) = SLIST_FIRST((head));                               \
+           (var) != SLIST_END(head) &&                                 \
+           ((tvar) = SLIST_NEXT((var), field), 1);                     \
+           (var) = (tvar))
+
+/*
+ * Singly-linked List functions.
+ */
+#define        SLIST_INIT(head) do {                                           
\
+       (head)->slh_first = SLIST_END(head);                            \
+} while (/*CONSTCOND*/0)
+
+#define        SLIST_INSERT_AFTER(slistelm, elm, field) do {                   
\
+       (elm)->field.sle_next = (slistelm)->field.sle_next;             \
+       (slistelm)->field.sle_next = (elm);                             \
+} while (/*CONSTCOND*/0)
+
+#define        SLIST_INSERT_HEAD(head, elm, field) do {                        
\
+       (elm)->field.sle_next = (head)->slh_first;                      \
+       (head)->slh_first = (elm);                                      \
+} while (/*CONSTCOND*/0)
+
+#define        SLIST_REMOVE_AFTER(slistelm, field) do {                        
\
+       (slistelm)->field.sle_next =                                    \
+           SLIST_NEXT(SLIST_NEXT((slistelm), field), field);           \
+} while (/*CONSTCOND*/0)
+
+#define        SLIST_REMOVE_HEAD(head, field) do {                             
\
+       (head)->slh_first = (head)->slh_first->field.sle_next;          \
+} while (/*CONSTCOND*/0)
+
+#define        SLIST_REMOVE(head, elm, type, field) do {                       
\
+       if ((head)->slh_first == (elm)) {                               \
+               SLIST_REMOVE_HEAD((head), field);                       \
+       }                                                               \
+       else {                                                          \
+               struct type *curelm = (head)->slh_first;                \
+               while(curelm->field.sle_next != (elm))                  \
+                       curelm = curelm->field.sle_next;                \
+               curelm->field.sle_next =                                \
+                   curelm->field.sle_next->field.sle_next;             \
+       }                                                               \
+} while (/*CONSTCOND*/0)
+
+
+/*
+ * List definitions.
+ */
+#define        LIST_HEAD(name, type)                                           
\
+struct name {                                                          \
+       struct type *lh_first;  /* first element */                     \
+}
+
+#define        LIST_HEAD_INITIALIZER(head)                                     
\
+       { NULL }
+
+#define        LIST_ENTRY(type)                                                
\
+struct {                                                               \
+       struct type *le_next;   /* next element */                      \
+       struct type **le_prev;  /* address of previous next element */  \
+}
+
+/*
+ * List access methods.
+ */
+#define        LIST_FIRST(head)                ((head)->lh_first)
+#define        LIST_END(head)                  NULL
+#define        LIST_EMPTY(head)                ((head)->lh_first == 
LIST_END(head))
+#define        LIST_NEXT(elm, field)           ((elm)->field.le_next)
+
+#define        LIST_FOREACH(var, head, field)                                  
\
+       for ((var) = ((head)->lh_first);                                \
+           (var) != LIST_END(head);                                    \
+           (var) = ((var)->field.le_next))
+
+#define        LIST_FOREACH_SAFE(var, head, field, tvar)                       
\
+       for ((var) = LIST_FIRST((head));                                \
+           (var) != LIST_END(head) &&                                  \
+           ((tvar) = LIST_NEXT((var), field), 1);                      \
+           (var) = (tvar))
+
+#define        LIST_MOVE(head1, head2) do {                                    
\
+       LIST_INIT((head2));                                             \
+       if (!LIST_EMPTY((head1))) {                                     \
+               (head2)->lh_first = (head1)->lh_first;                  \
+               LIST_INIT((head1));                                     \
+       }                                                               \
+} while (/*CONSTCOND*/0)
+
+/*
+ * List functions.
+ */
+#if defined(QUEUEDEBUG)
+#define        QUEUEDEBUG_LIST_INSERT_HEAD(head, elm, field)                   
\
+       if ((head)->lh_first &&                                         \
+           (head)->lh_first->field.le_prev != &(head)->lh_first)       \
+               QUEUEDEBUG_ABORT("LIST_INSERT_HEAD %p %s:%d", (head),   \
+                   __FILE__, __LINE__);
+#define        QUEUEDEBUG_LIST_OP(elm, field)                                  
\
+       if ((elm)->field.le_next &&                                     \
+           (elm)->field.le_next->field.le_prev !=                      \
+           &(elm)->field.le_next)                                      \
+               QUEUEDEBUG_ABORT("LIST_* forw %p %s:%d", (elm),         \
+                   __FILE__, __LINE__);                                \
+       if (*(elm)->field.le_prev != (elm))                             \
+               QUEUEDEBUG_ABORT("LIST_* back %p %s:%d", (elm),         \
+                   __FILE__, __LINE__);
+#define        QUEUEDEBUG_LIST_POSTREMOVE(elm, field)                          
\
+       (elm)->field.le_next = (void *)1L;                              \
+       (elm)->field.le_prev = (void *)1L;
+#else
+#define        QUEUEDEBUG_LIST_INSERT_HEAD(head, elm, field)
+#define        QUEUEDEBUG_LIST_OP(elm, field)
+#define        QUEUEDEBUG_LIST_POSTREMOVE(elm, field)
+#endif
+
+#define        LIST_INIT(head) do {                                            
\
+       (head)->lh_first = LIST_END(head);                              \
+} while (/*CONSTCOND*/0)
+
+#define        LIST_INSERT_AFTER(listelm, elm, field) do {                     
\
+       QUEUEDEBUG_LIST_OP((listelm), field)                            \
+       if (((elm)->field.le_next = (listelm)->field.le_next) !=        \
+           LIST_END(head))                                             \
+               (listelm)->field.le_next->field.le_prev =               \
+                   &(elm)->field.le_next;                              \
+       (listelm)->field.le_next = (elm);                               \
+       (elm)->field.le_prev = &(listelm)->field.le_next;               \
+} while (/*CONSTCOND*/0)
+
+#define        LIST_INSERT_BEFORE(listelm, elm, field) do {                    
\
+       QUEUEDEBUG_LIST_OP((listelm), field)                            \
+       (elm)->field.le_prev = (listelm)->field.le_prev;                \
+       (elm)->field.le_next = (listelm);                               \
+       *(listelm)->field.le_prev = (elm);                              \
+       (listelm)->field.le_prev = &(elm)->field.le_next;               \
+} while (/*CONSTCOND*/0)
+
+#define        LIST_INSERT_HEAD(head, elm, field) do {                         
\
+       QUEUEDEBUG_LIST_INSERT_HEAD((head), (elm), field)               \
+       if (((elm)->field.le_next = (head)->lh_first) != LIST_END(head))\
+               (head)->lh_first->field.le_prev = &(elm)->field.le_next;\
+       (head)->lh_first = (elm);                                       \
+       (elm)->field.le_prev = &(head)->lh_first;                       \
+} while (/*CONSTCOND*/0)
+
+#define        LIST_REMOVE(elm, field) do {                                    
\
+       QUEUEDEBUG_LIST_OP((elm), field)                                \
+       if ((elm)->field.le_next != NULL)                               \
+               (elm)->field.le_next->field.le_prev =                   \
+                   (elm)->field.le_prev;                               \
+       *(elm)->field.le_prev = (elm)->field.le_next;                   \
+       QUEUEDEBUG_LIST_POSTREMOVE((elm), field)                        \
+} while (/*CONSTCOND*/0)
+
+#define LIST_REPLACE(elm, elm2, field) do {                            \
+       if (((elm2)->field.le_next = (elm)->field.le_next) != NULL)     \
+               (elm2)->field.le_next->field.le_prev =                  \
+                   &(elm2)->field.le_next;                             \
+       (elm2)->field.le_prev = (elm)->field.le_prev;                   \
+       *(elm2)->field.le_prev = (elm2);                                \
+       QUEUEDEBUG_LIST_POSTREMOVE((elm), field)                        \
+} while (/*CONSTCOND*/0)
+
+/*
+ * Simple queue definitions.
+ */
+#define        SIMPLEQ_HEAD(name, type)                                        
\
+struct name {                                                          \
+       struct type *sqh_first; /* first element */                     \
+       struct type **sqh_last; /* addr of last next element */         \
+}
+
+#define        SIMPLEQ_HEAD_INITIALIZER(head)                                  
\
+       { NULL, &(head).sqh_first }
+
+#define        SIMPLEQ_ENTRY(type)                                             
\
+struct {                                                               \
+       struct type *sqe_next;  /* next element */                      \
+}
+
+/*
+ * Simple queue access methods.
+ */
+#define        SIMPLEQ_FIRST(head)             ((head)->sqh_first)
+#define        SIMPLEQ_END(head)               NULL
+#define        SIMPLEQ_EMPTY(head)             ((head)->sqh_first == 
SIMPLEQ_END(head))
+#define        SIMPLEQ_NEXT(elm, field)        ((elm)->field.sqe_next)
+
+#define        SIMPLEQ_FOREACH(var, head, field)                               
\
+       for ((var) = ((head)->sqh_first);                               \
+           (var) != SIMPLEQ_END(head);                                 \
+           (var) = ((var)->field.sqe_next))
+
+#define        SIMPLEQ_FOREACH_SAFE(var, head, field, next)                    
\
+       for ((var) = ((head)->sqh_first);                               \
+           (var) != SIMPLEQ_END(head) &&                               \
+           ((next = ((var)->field.sqe_next)), 1);                      \
+           (var) = (next))
+
+/*
+ * Simple queue functions.
+ */
+#define        SIMPLEQ_INIT(head) do {                                         
\
+       (head)->sqh_first = NULL;                                       \
+       (head)->sqh_last = &(head)->sqh_first;                          \
+} while (/*CONSTCOND*/0)
+
+#define        SIMPLEQ_INSERT_HEAD(head, elm, field) do {                      
\
+       if (((elm)->field.sqe_next = (head)->sqh_first) == NULL)        \
+               (head)->sqh_last = &(elm)->field.sqe_next;              \
+       (head)->sqh_first = (elm);                                      \
+} while (/*CONSTCOND*/0)
+
+#define        SIMPLEQ_INSERT_TAIL(head, elm, field) do {                      
\
+       (elm)->field.sqe_next = NULL;                                   \
+       *(head)->sqh_last = (elm);                                      \
+       (head)->sqh_last = &(elm)->field.sqe_next;                      \
+} while (/*CONSTCOND*/0)
+
+#define        SIMPLEQ_INSERT_AFTER(head, listelm, elm, field) do {            
\
+       if (((elm)->field.sqe_next = (listelm)->field.sqe_next) == NULL)\
+               (head)->sqh_last = &(elm)->field.sqe_next;              \
+       (listelm)->field.sqe_next = (elm);                              \
+} while (/*CONSTCOND*/0)
+
+#define        SIMPLEQ_REMOVE_HEAD(head, field) do {                           
\
+       if (((head)->sqh_first = (head)->sqh_first->field.sqe_next) == NULL) \
+               (head)->sqh_last = &(head)->sqh_first;                  \
+} while (/*CONSTCOND*/0)
+
+#define SIMPLEQ_REMOVE_AFTER(head, elm, field) do {                    \
+       if (((elm)->field.sqe_next = (elm)->field.sqe_next->field.sqe_next) \
+           == NULL)                                                    \
+               (head)->sqh_last = &(elm)->field.sqe_next;              \
+} while (/*CONSTCOND*/0)
+
+#define        SIMPLEQ_REMOVE(head, elm, type, field) do {                     
\
+       if ((head)->sqh_first == (elm)) {                               \
+               SIMPLEQ_REMOVE_HEAD((head), field);                     \
+       } else {                                                        \
+               struct type *curelm = (head)->sqh_first;                \
+               while (curelm->field.sqe_next != (elm))                 \
+                       curelm = curelm->field.sqe_next;                \
+               if ((curelm->field.sqe_next =                           \
+                       curelm->field.sqe_next->field.sqe_next) == NULL) \
+                           (head)->sqh_last = &(curelm)->field.sqe_next; \
+       }                                                               \
+} while (/*CONSTCOND*/0)
+
+#define        SIMPLEQ_CONCAT(head1, head2) do {                               
\
+       if (!SIMPLEQ_EMPTY((head2))) {                                  \
+               *(head1)->sqh_last = (head2)->sqh_first;                \
+               (head1)->sqh_last = (head2)->sqh_last;          \
+               SIMPLEQ_INIT((head2));                                  \
+       }                                                               \
+} while (/*CONSTCOND*/0)
+
+#define        SIMPLEQ_LAST(head, type, field)                                 
\
+       (SIMPLEQ_EMPTY((head)) ?                                                
\
+               NULL :                                                  \
+               ((struct type *)(void *)                                \
+               ((char *)((head)->sqh_last) - offsetof(struct type, field))))
+
+/*
+ * Tail queue definitions.
+ */
+#define        _TAILQ_HEAD(name, type, qual)                                   
\
+struct name {                                                          \
+       qual type *tqh_first;           /* first element */             \
+       qual type *qual *tqh_last;      /* addr of last next element */ \
+}
+#define TAILQ_HEAD(name, type) _TAILQ_HEAD(name, struct type,)
+
+#define        TAILQ_HEAD_INITIALIZER(head)                                    
\
+       { TAILQ_END(head), &(head).tqh_first }
+
+#define        _TAILQ_ENTRY(type, qual)                                        
\
+struct {                                                               \
+       qual type *tqe_next;            /* next element */              \
+       qual type *qual *tqe_prev;      /* address of previous next element */\
+}
+#define TAILQ_ENTRY(type)      _TAILQ_ENTRY(struct type,)
+
+/*
+ * Tail queue access methods.
+ */
+#define        TAILQ_FIRST(head)               ((head)->tqh_first)
+#define        TAILQ_END(head)                 (NULL)
+#define        TAILQ_NEXT(elm, field)          ((elm)->field.tqe_next)
+#define        TAILQ_LAST(head, headname) \
+       (*(((struct headname *)((head)->tqh_last))->tqh_last))
+#define        TAILQ_PREV(elm, headname, field) \
+       (*(((struct headname *)((elm)->field.tqe_prev))->tqh_last))
+#define        TAILQ_EMPTY(head)               (TAILQ_FIRST(head) == 
TAILQ_END(head))
+
+
+#define        TAILQ_FOREACH(var, head, field)                                 
\
+       for ((var) = ((head)->tqh_first);                               \
+           (var) != TAILQ_END(head);                                   \
+           (var) = ((var)->field.tqe_next))
+
+#define        TAILQ_FOREACH_SAFE(var, head, field, next)                      
\
+       for ((var) = ((head)->tqh_first);                               \
+           (var) != TAILQ_END(head) &&                                 \
+           ((next) = TAILQ_NEXT(var, field), 1); (var) = (next))
+
+#define        TAILQ_FOREACH_REVERSE(var, head, headname, field)               
\
+       for ((var) = (*(((struct headname *)((head)->tqh_last))->tqh_last));\
+           (var) != TAILQ_END(head);                                   \
+           (var) = (*(((struct headname *)((var)->field.tqe_prev))->tqh_last)))
+
+#define        TAILQ_FOREACH_REVERSE_SAFE(var, head, headname, field, prev)    
\
+       for ((var) = TAILQ_LAST((head), headname);                      \
+           (var) != TAILQ_END(head) &&                                 \
+           ((prev) = TAILQ_PREV((var), headname, field), 1); (var) = (prev))
+
+/*
+ * Tail queue functions.
+ */
+#if defined(QUEUEDEBUG)
+#define        QUEUEDEBUG_TAILQ_INSERT_HEAD(head, elm, field)                  
\
+       if ((head)->tqh_first &&                                        \
+           (head)->tqh_first->field.tqe_prev != &(head)->tqh_first)    \
+               QUEUEDEBUG_ABORT("TAILQ_INSERT_HEAD %p %s:%d", (head),  \
+                   __FILE__, __LINE__);
+#define        QUEUEDEBUG_TAILQ_INSERT_TAIL(head, elm, field)                  
\
+       if (*(head)->tqh_last != NULL)                                  \
+               QUEUEDEBUG_ABORT("TAILQ_INSERT_TAIL %p %s:%d", (head),  \
+                   __FILE__, __LINE__);
+#define        QUEUEDEBUG_TAILQ_OP(elm, field)                                 
\
+       if ((elm)->field.tqe_next &&                                    \
+           (elm)->field.tqe_next->field.tqe_prev !=                    \
+           &(elm)->field.tqe_next)                                     \
+               QUEUEDEBUG_ABORT("TAILQ_* forw %p %s:%d", (elm),        \
+                   __FILE__, __LINE__);                                \
+       if (*(elm)->field.tqe_prev != (elm))                            \
+               QUEUEDEBUG_ABORT("TAILQ_* back %p %s:%d", (elm),        \
+                   __FILE__, __LINE__);
+#define        QUEUEDEBUG_TAILQ_PREREMOVE(head, elm, field)                    
\
+       if ((elm)->field.tqe_next == NULL &&                            \
+           (head)->tqh_last != &(elm)->field.tqe_next)                 \
+               QUEUEDEBUG_ABORT("TAILQ_PREREMOVE head %p elm %p %s:%d",\
+                   (head), (elm), __FILE__, __LINE__);
+#define        QUEUEDEBUG_TAILQ_POSTREMOVE(elm, field)                         
\
+       (elm)->field.tqe_next = (void *)1L;                             \
+       (elm)->field.tqe_prev = (void *)1L;
+#else
+#define        QUEUEDEBUG_TAILQ_INSERT_HEAD(head, elm, field)
+#define        QUEUEDEBUG_TAILQ_INSERT_TAIL(head, elm, field)
+#define        QUEUEDEBUG_TAILQ_OP(elm, field)
+#define        QUEUEDEBUG_TAILQ_PREREMOVE(head, elm, field)
+#define        QUEUEDEBUG_TAILQ_POSTREMOVE(elm, field)
+#endif
+
+#define        TAILQ_INIT(head) do {                                           
\
+       (head)->tqh_first = TAILQ_END(head);                            \
+       (head)->tqh_last = &(head)->tqh_first;                          \
+} while (/*CONSTCOND*/0)
+
+#define        TAILQ_INSERT_HEAD(head, elm, field) do {                        
\
+       QUEUEDEBUG_TAILQ_INSERT_HEAD((head), (elm), field)              \
+       if (((elm)->field.tqe_next = (head)->tqh_first) != TAILQ_END(head))\
+               (head)->tqh_first->field.tqe_prev =                     \
+                   &(elm)->field.tqe_next;                             \
+       else                                                            \
+               (head)->tqh_last = &(elm)->field.tqe_next;              \
+       (head)->tqh_first = (elm);                                      \
+       (elm)->field.tqe_prev = &(head)->tqh_first;                     \
+} while (/*CONSTCOND*/0)
+
+#define        TAILQ_INSERT_TAIL(head, elm, field) do {                        
\
+       QUEUEDEBUG_TAILQ_INSERT_TAIL((head), (elm), field)              \
+       (elm)->field.tqe_next = TAILQ_END(head);                        \
+       (elm)->field.tqe_prev = (head)->tqh_last;                       \
+       *(head)->tqh_last = (elm);                                      \
+       (head)->tqh_last = &(elm)->field.tqe_next;                      \
+} while (/*CONSTCOND*/0)
+
+#define        TAILQ_INSERT_AFTER(head, listelm, elm, field) do {              
\
+       QUEUEDEBUG_TAILQ_OP((listelm), field)                           \
+       if (((elm)->field.tqe_next = (listelm)->field.tqe_next) !=      \
+           TAILQ_END(head))                                            \
+               (elm)->field.tqe_next->field.tqe_prev =                 \
+                   &(elm)->field.tqe_next;                             \
+       else                                                            \
+               (head)->tqh_last = &(elm)->field.tqe_next;              \
+       (listelm)->field.tqe_next = (elm);                              \
+       (elm)->field.tqe_prev = &(listelm)->field.tqe_next;             \
+} while (/*CONSTCOND*/0)
+
+#define        TAILQ_INSERT_BEFORE(listelm, elm, field) do {                   
\
+       QUEUEDEBUG_TAILQ_OP((listelm), field)                           \
+       (elm)->field.tqe_prev = (listelm)->field.tqe_prev;              \
+       (elm)->field.tqe_next = (listelm);                              \
+       *(listelm)->field.tqe_prev = (elm);                             \
+       (listelm)->field.tqe_prev = &(elm)->field.tqe_next;             \
+} while (/*CONSTCOND*/0)
+
+#define        TAILQ_REMOVE(head, elm, field) do {                             
\
+       QUEUEDEBUG_TAILQ_PREREMOVE((head), (elm), field)                \
+       QUEUEDEBUG_TAILQ_OP((elm), field)                               \
+       if (((elm)->field.tqe_next) != TAILQ_END(head))                 \
+               (elm)->field.tqe_next->field.tqe_prev =                 \
+                   (elm)->field.tqe_prev;                              \
+       else                                                            \
+               (head)->tqh_last = (elm)->field.tqe_prev;               \
+       *(elm)->field.tqe_prev = (elm)->field.tqe_next;                 \
+       QUEUEDEBUG_TAILQ_POSTREMOVE((elm), field);                      \
+} while (/*CONSTCOND*/0)
+
+#define TAILQ_REPLACE(head, elm, elm2, field) do {                     \
+        if (((elm2)->field.tqe_next = (elm)->field.tqe_next) !=        \
+           TAILQ_END(head))                                            \
+                (elm2)->field.tqe_next->field.tqe_prev =               \
+                    &(elm2)->field.tqe_next;                           \
+        else                                                           \
+                (head)->tqh_last = &(elm2)->field.tqe_next;            \
+        (elm2)->field.tqe_prev = (elm)->field.tqe_prev;                        
\
+        *(elm2)->field.tqe_prev = (elm2);                              \
+       QUEUEDEBUG_TAILQ_POSTREMOVE((elm), field);                      \
+} while (/*CONSTCOND*/0)
+
+#define        TAILQ_CONCAT(head1, head2, field) do {                          
\
+       if (!TAILQ_EMPTY(head2)) {                                      \
+               *(head1)->tqh_last = (head2)->tqh_first;                \
+               (head2)->tqh_first->field.tqe_prev = (head1)->tqh_last; \
+               (head1)->tqh_last = (head2)->tqh_last;                  \
+               TAILQ_INIT((head2));                                    \
+       }                                                               \
+} while (/*CONSTCOND*/0)
+
+/*
+ * Singly-linked Tail queue declarations.
+ */
+#define        STAILQ_HEAD(name, type)                                         
\
+struct name {                                                          \
+       struct type *stqh_first;        /* first element */             \
+       struct type **stqh_last;        /* addr of last next element */ \
+}
+
+#define        STAILQ_HEAD_INITIALIZER(head)                                   
\
+       { NULL, &(head).stqh_first }
+
+#define        STAILQ_ENTRY(type)                                              
\
+struct {                                                               \
+       struct type *stqe_next; /* next element */                      \
+}
+
+/*
+ * Singly-linked Tail queue access methods.
+ */
+#define        STAILQ_FIRST(head)      ((head)->stqh_first)
+#define        STAILQ_END(head)        NULL
+#define        STAILQ_NEXT(elm, field) ((elm)->field.stqe_next)
+#define        STAILQ_EMPTY(head)      (STAILQ_FIRST(head) == STAILQ_END(head))
+
+/*
+ * Singly-linked Tail queue functions.
+ */
+#define        STAILQ_INIT(head) do {                                          
\
+       (head)->stqh_first = NULL;                                      \
+       (head)->stqh_last = &(head)->stqh_first;                                
\
+} while (/*CONSTCOND*/0)
+
+#define        STAILQ_INSERT_HEAD(head, elm, field) do {                       
\
+       if (((elm)->field.stqe_next = (head)->stqh_first) == NULL)      \
+               (head)->stqh_last = &(elm)->field.stqe_next;            \
+       (head)->stqh_first = (elm);                                     \
+} while (/*CONSTCOND*/0)
+
+#define        STAILQ_INSERT_TAIL(head, elm, field) do {                       
\
+       (elm)->field.stqe_next = NULL;                                  \
+       *(head)->stqh_last = (elm);                                     \
+       (head)->stqh_last = &(elm)->field.stqe_next;                    \
+} while (/*CONSTCOND*/0)
+
+#define        STAILQ_INSERT_AFTER(head, listelm, elm, field) do {             
\
+       if (((elm)->field.stqe_next = (listelm)->field.stqe_next) == NULL)\
+               (head)->stqh_last = &(elm)->field.stqe_next;            \
+       (listelm)->field.stqe_next = (elm);                             \
+} while (/*CONSTCOND*/0)
+
+#define        STAILQ_REMOVE_HEAD(head, field) do {                            
\
+       if (((head)->stqh_first = (head)->stqh_first->field.stqe_next) == NULL) 
\
+               (head)->stqh_last = &(head)->stqh_first;                        
\
+} while (/*CONSTCOND*/0)
+
+#define        STAILQ_REMOVE(head, elm, type, field) do {                      
\
+       if ((head)->stqh_first == (elm)) {                              \
+               STAILQ_REMOVE_HEAD((head), field);                      \
+       } else {                                                        \
+               struct type *curelm = (head)->stqh_first;               \
+               while (curelm->field.stqe_next != (elm))                        
\
+                       curelm = curelm->field.stqe_next;               \
+               if ((curelm->field.stqe_next =                          \
+                       curelm->field.stqe_next->field.stqe_next) == NULL) \
+                           (head)->stqh_last = &(curelm)->field.stqe_next; \
+       }                                                               \
+} while (/*CONSTCOND*/0)
+
+#define        STAILQ_FOREACH(var, head, field)                                
\
+       for ((var) = ((head)->stqh_first);                              \
+               (var);                                                  \
+               (var) = ((var)->field.stqe_next))
+
+#define        STAILQ_FOREACH_SAFE(var, head, field, tvar)                     
\
+       for ((var) = STAILQ_FIRST((head));                              \
+           (var) && ((tvar) = STAILQ_NEXT((var), field), 1);           \
+           (var) = (tvar))
+
+#define        STAILQ_CONCAT(head1, head2) do {                                
\
+       if (!STAILQ_EMPTY((head2))) {                                   \
+               *(head1)->stqh_last = (head2)->stqh_first;              \
+               (head1)->stqh_last = (head2)->stqh_last;                \
+               STAILQ_INIT((head2));                                   \
+       }                                                               \
+} while (/*CONSTCOND*/0)
+
+#define        STAILQ_LAST(head, type, field)                                  
\
+       (STAILQ_EMPTY((head)) ?                                         \
+               NULL :                                                  \
+               ((struct type *)(void *)                                \
+               ((char *)((head)->stqh_last) - offsetof(struct type, field))))
+
+
+#ifndef _KERNEL
+/*
+ * Circular queue definitions. Do not use. We still keep the macros
+ * for compatibility but because of pointer aliasing issues their use
+ * is discouraged!
+ */
+
+/*
+ * __launder_type():  We use this ugly hack to work around the the compiler
+ * noticing that two types may not alias each other and elide tests in code.
+ * We hit this in the CIRCLEQ macros when comparing 'struct name *' and
+ * 'struct type *' (see CIRCLEQ_HEAD()).  Modern compilers (such as GCC
+ * 4.8) declare these comparisons as always false, causing the code to
+ * not run as designed.
+ *
+ * This hack is only to be used for comparisons and thus can be fully const.
+ * Do not use for assignment.
+ *
+ * If we ever choose to change the ABI of the CIRCLEQ macros, we could fix
+ * this by changing the head/tail sentinal values, but see the note above
+ * this one.
+ */
+static __inline const void * __launder_type(const void *);
+static __inline const void *
+__launder_type(const void *__x)
+{
+       __asm __volatile("" : "+r" (__x));
+       return __x;
+}
+
+#if defined(QUEUEDEBUG)
+#define QUEUEDEBUG_CIRCLEQ_HEAD(head, field)                           \
+       if ((head)->cqh_first != CIRCLEQ_ENDC(head) &&                  \
+           (head)->cqh_first->field.cqe_prev != CIRCLEQ_ENDC(head))    \
+               QUEUEDEBUG_ABORT("CIRCLEQ head forw %p %s:%d", (head),  \
+                     __FILE__, __LINE__);                              \
+       if ((head)->cqh_last != CIRCLEQ_ENDC(head) &&                   \
+           (head)->cqh_last->field.cqe_next != CIRCLEQ_ENDC(head))     \
+               QUEUEDEBUG_ABORT("CIRCLEQ head back %p %s:%d", (head),  \
+                     __FILE__, __LINE__);
+#define QUEUEDEBUG_CIRCLEQ_ELM(head, elm, field)                       \
+       if ((elm)->field.cqe_next == CIRCLEQ_ENDC(head)) {              \
+               if ((head)->cqh_last != (elm))                          \
+                       QUEUEDEBUG_ABORT("CIRCLEQ elm last %p %s:%d",   \
+                           (elm), __FILE__, __LINE__);                 \
+       } else {                                                        \
+               if ((elm)->field.cqe_next->field.cqe_prev != (elm))     \
+                       QUEUEDEBUG_ABORT("CIRCLEQ elm forw %p %s:%d",   \
+                           (elm), __FILE__, __LINE__);                 \
+       }                                                               \
+       if ((elm)->field.cqe_prev == CIRCLEQ_ENDC(head)) {              \
+               if ((head)->cqh_first != (elm))                         \
+                       QUEUEDEBUG_ABORT("CIRCLEQ elm first %p %s:%d",  \
+                           (elm), __FILE__, __LINE__);                 \
+       } else {                                                        \
+               if ((elm)->field.cqe_prev->field.cqe_next != (elm))     \
+                       QUEUEDEBUG_ABORT("CIRCLEQ elm prev %p %s:%d",   \
+                           (elm), __FILE__, __LINE__);                 \
+       }
+#define QUEUEDEBUG_CIRCLEQ_POSTREMOVE(elm, field)                      \
+       (elm)->field.cqe_next = (void *)1L;                             \
+       (elm)->field.cqe_prev = (void *)1L;
+#else
+#define QUEUEDEBUG_CIRCLEQ_HEAD(head, field)
+#define QUEUEDEBUG_CIRCLEQ_ELM(head, elm, field)
+#define QUEUEDEBUG_CIRCLEQ_POSTREMOVE(elm, field)
+#endif
+
+#define        CIRCLEQ_HEAD(name, type)                                        
\
+struct name {                                                          \
+       struct type *cqh_first;         /* first element */             \
+       struct type *cqh_last;          /* last element */              \
+}
+
+#define        CIRCLEQ_HEAD_INITIALIZER(head)                                  
\
+       { CIRCLEQ_END(&head), CIRCLEQ_END(&head) }
+
+#define        CIRCLEQ_ENTRY(type)                                             
\
+struct {                                                               \
+       struct type *cqe_next;          /* next element */              \
+       struct type *cqe_prev;          /* previous element */          \
+}
+
+/*
+ * Circular queue functions.
+ */
+#define        CIRCLEQ_INIT(head) do {                                         
\
+       (head)->cqh_first = CIRCLEQ_END(head);                          \
+       (head)->cqh_last = CIRCLEQ_END(head);                           \
+} while (/*CONSTCOND*/0)
+
+#define        CIRCLEQ_INSERT_AFTER(head, listelm, elm, field) do {            
\
+       QUEUEDEBUG_CIRCLEQ_HEAD((head), field)                          \
+       QUEUEDEBUG_CIRCLEQ_ELM((head), (listelm), field)                \
+       (elm)->field.cqe_next = (listelm)->field.cqe_next;              \
+       (elm)->field.cqe_prev = (listelm);                              \
+       if ((listelm)->field.cqe_next == CIRCLEQ_ENDC(head))            \
+               (head)->cqh_last = (elm);                               \
+       else                                                            \
+               (listelm)->field.cqe_next->field.cqe_prev = (elm);      \
+       (listelm)->field.cqe_next = (elm);                              \
+} while (/*CONSTCOND*/0)
+
+#define        CIRCLEQ_INSERT_BEFORE(head, listelm, elm, field) do {           
\
+       QUEUEDEBUG_CIRCLEQ_HEAD((head), field)                          \
+       QUEUEDEBUG_CIRCLEQ_ELM((head), (listelm), field)                \
+       (elm)->field.cqe_next = (listelm);                              \
+       (elm)->field.cqe_prev = (listelm)->field.cqe_prev;              \
+       if ((listelm)->field.cqe_prev == CIRCLEQ_ENDC(head))            \
+               (head)->cqh_first = (elm);                              \
+       else                                                            \
+               (listelm)->field.cqe_prev->field.cqe_next = (elm);      \
+       (listelm)->field.cqe_prev = (elm);                              \
+} while (/*CONSTCOND*/0)
+
+#define        CIRCLEQ_INSERT_HEAD(head, elm, field) do {                      
\
+       QUEUEDEBUG_CIRCLEQ_HEAD((head), field)                          \
+       (elm)->field.cqe_next = (head)->cqh_first;                      \
+       (elm)->field.cqe_prev = CIRCLEQ_END(head);                      \
+       if ((head)->cqh_last == CIRCLEQ_ENDC(head))                     \
+               (head)->cqh_last = (elm);                               \
+       else                                                            \
+               (head)->cqh_first->field.cqe_prev = (elm);              \
+       (head)->cqh_first = (elm);                                      \
+} while (/*CONSTCOND*/0)
+
+#define        CIRCLEQ_INSERT_TAIL(head, elm, field) do {                      
\
+       QUEUEDEBUG_CIRCLEQ_HEAD((head), field)                          \
+       (elm)->field.cqe_next = CIRCLEQ_END(head);                      \
+       (elm)->field.cqe_prev = (head)->cqh_last;                       \
+       if ((head)->cqh_first == CIRCLEQ_ENDC(head))                    \
+               (head)->cqh_first = (elm);                              \
+       else                                                            \
+               (head)->cqh_last->field.cqe_next = (elm);               \
+       (head)->cqh_last = (elm);                                       \
+} while (/*CONSTCOND*/0)
+
+#define        CIRCLEQ_REMOVE(head, elm, field) do {                           
\
+       QUEUEDEBUG_CIRCLEQ_HEAD((head), field)                          \
+       QUEUEDEBUG_CIRCLEQ_ELM((head), (elm), field)                    \
+       if ((elm)->field.cqe_next == CIRCLEQ_ENDC(head))                \
+               (head)->cqh_last = (elm)->field.cqe_prev;               \
+       else                                                            \
+               (elm)->field.cqe_next->field.cqe_prev =                 \
+                   (elm)->field.cqe_prev;                              \
+       if ((elm)->field.cqe_prev == CIRCLEQ_ENDC(head))                \
+               (head)->cqh_first = (elm)->field.cqe_next;              \
+       else                                                            \
+               (elm)->field.cqe_prev->field.cqe_next =                 \
+                   (elm)->field.cqe_next;                              \
+       QUEUEDEBUG_CIRCLEQ_POSTREMOVE((elm), field)                     \
+} while (/*CONSTCOND*/0)
+
+#define        CIRCLEQ_FOREACH(var, head, field)                               
\
+       for ((var) = ((head)->cqh_first);                               \
+               (var) != CIRCLEQ_ENDC(head);                            \
+               (var) = ((var)->field.cqe_next))
+
+#define        CIRCLEQ_FOREACH_REVERSE(var, head, field)                       
\
+       for ((var) = ((head)->cqh_last);                                \
+               (var) != CIRCLEQ_ENDC(head);                            \
+               (var) = ((var)->field.cqe_prev))
+
+/*
+ * Circular queue access methods.
+ */
+#define        CIRCLEQ_FIRST(head)             ((head)->cqh_first)
+#define        CIRCLEQ_LAST(head)              ((head)->cqh_last)
+/* For comparisons */
+#define        CIRCLEQ_ENDC(head)              (__launder_type(head))
+/* For assignments */
+#define        CIRCLEQ_END(head)               ((void *)(head))
+#define        CIRCLEQ_NEXT(elm, field)        ((elm)->field.cqe_next)
+#define        CIRCLEQ_PREV(elm, field)        ((elm)->field.cqe_prev)
+#define        CIRCLEQ_EMPTY(head)                                             
\
+    (CIRCLEQ_FIRST(head) == CIRCLEQ_ENDC(head))
+
+#define CIRCLEQ_LOOP_NEXT(head, elm, field)                            \
+       (((elm)->field.cqe_next == CIRCLEQ_ENDC(head))                  \
+           ? ((head)->cqh_first)                                       \
+           : (elm->field.cqe_next))
+#define CIRCLEQ_LOOP_PREV(head, elm, field)                            \
+       (((elm)->field.cqe_prev == CIRCLEQ_ENDC(head))                  \
+           ? ((head)->cqh_last)                                        \
+           : (elm->field.cqe_prev))
+#endif /* !_KERNEL */
+
+#endif /* !_SYS_QUEUE_H_ */
diff --git a/meta/recipes-core/bsd-headers/bsd-headers/sys-tree.h 
b/meta/recipes-core/bsd-headers/bsd-headers/sys-tree.h
new file mode 100644
index 0000000..eaea56a
--- /dev/null
+++ b/meta/recipes-core/bsd-headers/bsd-headers/sys-tree.h
@@ -0,0 +1,761 @@
+/*     $NetBSD: tree.h,v 1.20 2013/09/14 13:20:45 joerg Exp $  */
+/*     $OpenBSD: tree.h,v 1.13 2011/07/09 00:19:45 pirofti Exp $       */
+/*
+ * Copyright 2002 Niels Provos <pro...@citi.umich.edu>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef        _SYS_TREE_H_
+#define        _SYS_TREE_H_
+
+/*
+ * This file defines data structures for different types of trees:
+ * splay trees and red-black trees.
+ *
+ * A splay tree is a self-organizing data structure.  Every operation
+ * on the tree causes a splay to happen.  The splay moves the requested
+ * node to the root of the tree and partly rebalances it.
+ *
+ * This has the benefit that request locality causes faster lookups as
+ * the requested nodes move to the top of the tree.  On the other hand,
+ * every lookup causes memory writes.
+ *
+ * The Balance Theorem bounds the total access time for m operations
+ * and n inserts on an initially empty tree as O((m + n)lg n).  The
+ * amortized cost for a sequence of m accesses to a splay tree is O(lg n);
+ *
+ * A red-black tree is a binary search tree with the node color as an
+ * extra attribute.  It fulfills a set of conditions:
+ *     - every search path from the root to a leaf consists of the
+ *       same number of black nodes,
+ *     - each red node (except for the root) has a black parent,
+ *     - each leaf node is black.
+ *
+ * Every operation on a red-black tree is bounded as O(lg n).
+ * The maximum height of a red-black tree is 2lg (n+1).
+ */
+
+#define SPLAY_HEAD(name, type)                                         \
+struct name {                                                          \
+       struct type *sph_root; /* root of the tree */                   \
+}
+
+#define SPLAY_INITIALIZER(root)                                                
\
+       { NULL }
+
+#define SPLAY_INIT(root) do {                                          \
+       (root)->sph_root = NULL;                                        \
+} while (/*CONSTCOND*/ 0)
+
+#define SPLAY_ENTRY(type)                                              \
+struct {                                                               \
+       struct type *spe_left; /* left element */                       \
+       struct type *spe_right; /* right element */                     \
+}
+
+#define SPLAY_LEFT(elm, field)         (elm)->field.spe_left
+#define SPLAY_RIGHT(elm, field)                (elm)->field.spe_right
+#define SPLAY_ROOT(head)               (head)->sph_root
+#define SPLAY_EMPTY(head)              (SPLAY_ROOT(head) == NULL)
+
+/* SPLAY_ROTATE_{LEFT,RIGHT} expect that tmp hold SPLAY_{RIGHT,LEFT} */
+#define SPLAY_ROTATE_RIGHT(head, tmp, field) do {                      \
+       SPLAY_LEFT((head)->sph_root, field) = SPLAY_RIGHT(tmp, field);  \
+       SPLAY_RIGHT(tmp, field) = (head)->sph_root;                     \
+       (head)->sph_root = tmp;                                         \
+} while (/*CONSTCOND*/ 0)
+
+#define SPLAY_ROTATE_LEFT(head, tmp, field) do {                       \
+       SPLAY_RIGHT((head)->sph_root, field) = SPLAY_LEFT(tmp, field);  \
+       SPLAY_LEFT(tmp, field) = (head)->sph_root;                      \
+       (head)->sph_root = tmp;                                         \
+} while (/*CONSTCOND*/ 0)
+
+#define SPLAY_LINKLEFT(head, tmp, field) do {                          \
+       SPLAY_LEFT(tmp, field) = (head)->sph_root;                      \
+       tmp = (head)->sph_root;                                         \
+       (head)->sph_root = SPLAY_LEFT((head)->sph_root, field);         \
+} while (/*CONSTCOND*/ 0)
+
+#define SPLAY_LINKRIGHT(head, tmp, field) do {                         \
+       SPLAY_RIGHT(tmp, field) = (head)->sph_root;                     \
+       tmp = (head)->sph_root;                                         \
+       (head)->sph_root = SPLAY_RIGHT((head)->sph_root, field);        \
+} while (/*CONSTCOND*/ 0)
+
+#define SPLAY_ASSEMBLE(head, node, left, right, field) do {            \
+       SPLAY_RIGHT(left, field) = SPLAY_LEFT((head)->sph_root, field); \
+       SPLAY_LEFT(right, field) = SPLAY_RIGHT((head)->sph_root, field);\
+       SPLAY_LEFT((head)->sph_root, field) = SPLAY_RIGHT(node, field); \
+       SPLAY_RIGHT((head)->sph_root, field) = SPLAY_LEFT(node, field); \
+} while (/*CONSTCOND*/ 0)
+
+/* Generates prototypes and inline functions */
+
+#define SPLAY_PROTOTYPE(name, type, field, cmp)                                
\
+void name##_SPLAY(struct name *, struct type *);                       \
+void name##_SPLAY_MINMAX(struct name *, int);                          \
+struct type *name##_SPLAY_INSERT(struct name *, struct type *);                
\
+struct type *name##_SPLAY_REMOVE(struct name *, struct type *);                
\
+                                                                       \
+/* Finds the node with the same key as elm */                          \
+static __inline struct type *                                          \
+name##_SPLAY_FIND(struct name *head, struct type *elm)                 \
+{                                                                      \
+       if (SPLAY_EMPTY(head))                                          \
+               return(NULL);                                           \
+       name##_SPLAY(head, elm);                                        \
+       if ((cmp)(elm, (head)->sph_root) == 0)                          \
+               return (head->sph_root);                                \
+       return (NULL);                                                  \
+}                                                                      \
+                                                                       \
+static __inline __unused struct type *                                 \
+name##_SPLAY_NEXT(struct name *head, struct type *elm)                 \
+{                                                                      \
+       name##_SPLAY(head, elm);                                        \
+       if (SPLAY_RIGHT(elm, field) != NULL) {                          \
+               elm = SPLAY_RIGHT(elm, field);                          \
+               while (SPLAY_LEFT(elm, field) != NULL) {                \
+                       elm = SPLAY_LEFT(elm, field);                   \
+               }                                                       \
+       } else                                                          \
+               elm = NULL;                                             \
+       return (elm);                                                   \
+}                                                                      \
+                                                                       \
+static __unused __inline struct type *                                 \
+name##_SPLAY_MIN_MAX(struct name *head, int val)                       \
+{                                                                      \
+       name##_SPLAY_MINMAX(head, val);                                 \
+        return (SPLAY_ROOT(head));                                     \
+}
+
+/* Main splay operation.
+ * Moves node close to the key of elm to top
+ */
+#define SPLAY_GENERATE(name, type, field, cmp)                         \
+struct type *                                                          \
+name##_SPLAY_INSERT(struct name *head, struct type *elm)               \
+{                                                                      \
+    if (SPLAY_EMPTY(head)) {                                           \
+           SPLAY_LEFT(elm, field) = SPLAY_RIGHT(elm, field) = NULL;    \
+    } else {                                                           \
+           int __comp;                                                 \
+           name##_SPLAY(head, elm);                                    \
+           __comp = (cmp)(elm, (head)->sph_root);                      \
+           if(__comp < 0) {                                            \
+                   SPLAY_LEFT(elm, field) = SPLAY_LEFT((head)->sph_root, 
field);\
+                   SPLAY_RIGHT(elm, field) = (head)->sph_root;         \
+                   SPLAY_LEFT((head)->sph_root, field) = NULL;         \
+           } else if (__comp > 0) {                                    \
+                   SPLAY_RIGHT(elm, field) = SPLAY_RIGHT((head)->sph_root, 
field);\
+                   SPLAY_LEFT(elm, field) = (head)->sph_root;          \
+                   SPLAY_RIGHT((head)->sph_root, field) = NULL;        \
+           } else                                                      \
+                   return ((head)->sph_root);                          \
+    }                                                                  \
+    (head)->sph_root = (elm);                                          \
+    return (NULL);                                                     \
+}                                                                      \
+                                                                       \
+struct type *                                                          \
+name##_SPLAY_REMOVE(struct name *head, struct type *elm)               \
+{                                                                      \
+       struct type *__tmp;                                             \
+       if (SPLAY_EMPTY(head))                                          \
+               return (NULL);                                          \
+       name##_SPLAY(head, elm);                                        \
+       if ((cmp)(elm, (head)->sph_root) == 0) {                        \
+               if (SPLAY_LEFT((head)->sph_root, field) == NULL) {      \
+                       (head)->sph_root = SPLAY_RIGHT((head)->sph_root, 
field);\
+               } else {                                                \
+                       __tmp = SPLAY_RIGHT((head)->sph_root, field);   \
+                       (head)->sph_root = SPLAY_LEFT((head)->sph_root, field);\
+                       name##_SPLAY(head, elm);                        \
+                       SPLAY_RIGHT((head)->sph_root, field) = __tmp;   \
+               }                                                       \
+               return (elm);                                           \
+       }                                                               \
+       return (NULL);                                                  \
+}                                                                      \
+                                                                       \
+void                                                                   \
+name##_SPLAY(struct name *head, struct type *elm)                      \
+{                                                                      \
+       struct type __node, *__left, *__right, *__tmp;                  \
+       int __comp;                                                     \
+\
+       SPLAY_LEFT(&__node, field) = SPLAY_RIGHT(&__node, field) = NULL;\
+       __left = __right = &__node;                                     \
+\
+       while ((__comp = (cmp)(elm, (head)->sph_root)) != 0) {          \
+               if (__comp < 0) {                                       \
+                       __tmp = SPLAY_LEFT((head)->sph_root, field);    \
+                       if (__tmp == NULL)                              \
+                               break;                                  \
+                       if ((cmp)(elm, __tmp) < 0){                     \
+                               SPLAY_ROTATE_RIGHT(head, __tmp, field); \
+                               if (SPLAY_LEFT((head)->sph_root, field) == 
NULL)\
+                                       break;                          \
+                       }                                               \
+                       SPLAY_LINKLEFT(head, __right, field);           \
+               } else if (__comp > 0) {                                \
+                       __tmp = SPLAY_RIGHT((head)->sph_root, field);   \
+                       if (__tmp == NULL)                              \
+                               break;                                  \
+                       if ((cmp)(elm, __tmp) > 0){                     \
+                               SPLAY_ROTATE_LEFT(head, __tmp, field);  \
+                               if (SPLAY_RIGHT((head)->sph_root, field) == 
NULL)\
+                                       break;                          \
+                       }                                               \
+                       SPLAY_LINKRIGHT(head, __left, field);           \
+               }                                                       \
+       }                                                               \
+       SPLAY_ASSEMBLE(head, &__node, __left, __right, field);          \
+}                                                                      \
+                                                                       \
+/* Splay with either the minimum or the maximum element                        
\
+ * Used to find minimum or maximum element in tree.                    \
+ */                                                                    \
+void name##_SPLAY_MINMAX(struct name *head, int __comp) \
+{                                                                      \
+       struct type __node, *__left, *__right, *__tmp;                  \
+\
+       SPLAY_LEFT(&__node, field) = SPLAY_RIGHT(&__node, field) = NULL;\
+       __left = __right = &__node;                                     \
+\
+       while (1) {                                                     \
+               if (__comp < 0) {                                       \
+                       __tmp = SPLAY_LEFT((head)->sph_root, field);    \
+                       if (__tmp == NULL)                              \
+                               break;                                  \
+                       if (__comp < 0){                                \
+                               SPLAY_ROTATE_RIGHT(head, __tmp, field); \
+                               if (SPLAY_LEFT((head)->sph_root, field) == 
NULL)\
+                                       break;                          \
+                       }                                               \
+                       SPLAY_LINKLEFT(head, __right, field);           \
+               } else if (__comp > 0) {                                \
+                       __tmp = SPLAY_RIGHT((head)->sph_root, field);   \
+                       if (__tmp == NULL)                              \
+                               break;                                  \
+                       if (__comp > 0) {                               \
+                               SPLAY_ROTATE_LEFT(head, __tmp, field);  \
+                               if (SPLAY_RIGHT((head)->sph_root, field) == 
NULL)\
+                                       break;                          \
+                       }                                               \
+                       SPLAY_LINKRIGHT(head, __left, field);           \
+               }                                                       \
+       }                                                               \
+       SPLAY_ASSEMBLE(head, &__node, __left, __right, field);          \
+}
+
+#define SPLAY_NEGINF   -1
+#define SPLAY_INF      1
+
+#define SPLAY_INSERT(name, x, y)       name##_SPLAY_INSERT(x, y)
+#define SPLAY_REMOVE(name, x, y)       name##_SPLAY_REMOVE(x, y)
+#define SPLAY_FIND(name, x, y)         name##_SPLAY_FIND(x, y)
+#define SPLAY_NEXT(name, x, y)         name##_SPLAY_NEXT(x, y)
+#define SPLAY_MIN(name, x)             (SPLAY_EMPTY(x) ? NULL  \
+                                       : name##_SPLAY_MIN_MAX(x, SPLAY_NEGINF))
+#define SPLAY_MAX(name, x)             (SPLAY_EMPTY(x) ? NULL  \
+                                       : name##_SPLAY_MIN_MAX(x, SPLAY_INF))
+
+#define SPLAY_FOREACH(x, name, head)                                   \
+       for ((x) = SPLAY_MIN(name, head);                               \
+            (x) != NULL;                                               \
+            (x) = SPLAY_NEXT(name, head, x))
+
+/* Macros that define a red-black tree */
+#define RB_HEAD(name, type)                                            \
+struct name {                                                          \
+       struct type *rbh_root; /* root of the tree */                   \
+}
+
+#define RB_INITIALIZER(root)                                           \
+       { NULL }
+
+#define RB_INIT(root) do {                                             \
+       (root)->rbh_root = NULL;                                        \
+} while (/*CONSTCOND*/ 0)
+
+#define RB_BLACK       0
+#define RB_RED         1
+#define RB_ENTRY(type)                                                 \
+struct {                                                               \
+       struct type *rbe_left;          /* left element */              \
+       struct type *rbe_right;         /* right element */             \
+       struct type *rbe_parent;        /* parent element */            \
+       int rbe_color;                  /* node color */                \
+}
+
+#define RB_LEFT(elm, field)            (elm)->field.rbe_left
+#define RB_RIGHT(elm, field)           (elm)->field.rbe_right
+#define RB_PARENT(elm, field)          (elm)->field.rbe_parent
+#define RB_COLOR(elm, field)           (elm)->field.rbe_color
+#define RB_ROOT(head)                  (head)->rbh_root
+#define RB_EMPTY(head)                 (RB_ROOT(head) == NULL)
+
+#define RB_SET(elm, parent, field) do {                                        
\
+       RB_PARENT(elm, field) = parent;                                 \
+       RB_LEFT(elm, field) = RB_RIGHT(elm, field) = NULL;              \
+       RB_COLOR(elm, field) = RB_RED;                                  \
+} while (/*CONSTCOND*/ 0)
+
+#define RB_SET_BLACKRED(black, red, field) do {                                
\
+       RB_COLOR(black, field) = RB_BLACK;                              \
+       RB_COLOR(red, field) = RB_RED;                                  \
+} while (/*CONSTCOND*/ 0)
+
+#ifndef RB_AUGMENT
+#define RB_AUGMENT(x)  do {} while (/*CONSTCOND*/ 0)
+#endif
+
+#define RB_ROTATE_LEFT(head, elm, tmp, field) do {                     \
+       (tmp) = RB_RIGHT(elm, field);                                   \
+       if ((RB_RIGHT(elm, field) = RB_LEFT(tmp, field)) != NULL) {     \
+               RB_PARENT(RB_LEFT(tmp, field), field) = (elm);          \
+       }                                                               \
+       RB_AUGMENT(elm);                                                \
+       if ((RB_PARENT(tmp, field) = RB_PARENT(elm, field)) != NULL) {  \
+               if ((elm) == RB_LEFT(RB_PARENT(elm, field), field))     \
+                       RB_LEFT(RB_PARENT(elm, field), field) = (tmp);  \
+               else                                                    \
+                       RB_RIGHT(RB_PARENT(elm, field), field) = (tmp); \
+       } else                                                          \
+               (head)->rbh_root = (tmp);                               \
+       RB_LEFT(tmp, field) = (elm);                                    \
+       RB_PARENT(elm, field) = (tmp);                                  \
+       RB_AUGMENT(tmp);                                                \
+       if ((RB_PARENT(tmp, field)))                                    \
+               RB_AUGMENT(RB_PARENT(tmp, field));                      \
+} while (/*CONSTCOND*/ 0)
+
+#define RB_ROTATE_RIGHT(head, elm, tmp, field) do {                    \
+       (tmp) = RB_LEFT(elm, field);                                    \
+       if ((RB_LEFT(elm, field) = RB_RIGHT(tmp, field)) != NULL) {     \
+               RB_PARENT(RB_RIGHT(tmp, field), field) = (elm);         \
+       }                                                               \
+       RB_AUGMENT(elm);                                                \
+       if ((RB_PARENT(tmp, field) = RB_PARENT(elm, field)) != NULL) {  \
+               if ((elm) == RB_LEFT(RB_PARENT(elm, field), field))     \
+                       RB_LEFT(RB_PARENT(elm, field), field) = (tmp);  \
+               else                                                    \
+                       RB_RIGHT(RB_PARENT(elm, field), field) = (tmp); \
+       } else                                                          \
+               (head)->rbh_root = (tmp);                               \
+       RB_RIGHT(tmp, field) = (elm);                                   \
+       RB_PARENT(elm, field) = (tmp);                                  \
+       RB_AUGMENT(tmp);                                                \
+       if ((RB_PARENT(tmp, field)))                                    \
+               RB_AUGMENT(RB_PARENT(tmp, field));                      \
+} while (/*CONSTCOND*/ 0)
+
+/* Generates prototypes and inline functions */
+#define RB_PROTOTYPE(name, type, field, cmp)                           \
+       RB_PROTOTYPE_INTERNAL(name, type, field, cmp,)
+#define        RB_PROTOTYPE_STATIC(name, type, field, cmp)                     
\
+       RB_PROTOTYPE_INTERNAL(name, type, field, cmp, __unused static)
+#define RB_PROTOTYPE_INTERNAL(name, type, field, cmp, attr)            \
+attr void name##_RB_INSERT_COLOR(struct name *, struct type *);                
\
+attr void name##_RB_REMOVE_COLOR(struct name *, struct type *, struct type *);\
+attr struct type *name##_RB_REMOVE(struct name *, struct type *);      \
+attr struct type *name##_RB_INSERT(struct name *, struct type *);      \
+attr struct type *name##_RB_FIND(struct name *, struct type *);                
\
+attr struct type *name##_RB_NFIND(struct name *, struct type *);       \
+attr struct type *name##_RB_NEXT(struct type *);                       \
+attr struct type *name##_RB_PREV(struct type *);                       \
+attr struct type *name##_RB_MINMAX(struct name *, int);                        
\
+                                                                       \
+
+/* Main rb operation.
+ * Moves node close to the key of elm to top
+ */
+#define        RB_GENERATE(name, type, field, cmp)                             
\
+       RB_GENERATE_INTERNAL(name, type, field, cmp,)
+#define        RB_GENERATE_STATIC(name, type, field, cmp)                      
\
+       RB_GENERATE_INTERNAL(name, type, field, cmp, __unused static)
+#define RB_GENERATE_INTERNAL(name, type, field, cmp, attr)             \
+attr void                                                              \
+name##_RB_INSERT_COLOR(struct name *head, struct type *elm)            \
+{                                                                      \
+       struct type *parent, *gparent, *tmp;                            \
+       while ((parent = RB_PARENT(elm, field)) != NULL &&              \
+           RB_COLOR(parent, field) == RB_RED) {                        \
+               gparent = RB_PARENT(parent, field);                     \
+               if (parent == RB_LEFT(gparent, field)) {                \
+                       tmp = RB_RIGHT(gparent, field);                 \
+                       if (tmp && RB_COLOR(tmp, field) == RB_RED) {    \
+                               RB_COLOR(tmp, field) = RB_BLACK;        \
+                               RB_SET_BLACKRED(parent, gparent, field);\
+                               elm = gparent;                          \
+                               continue;                               \
+                       }                                               \
+                       if (RB_RIGHT(parent, field) == elm) {           \
+                               RB_ROTATE_LEFT(head, parent, tmp, field);\
+                               tmp = parent;                           \
+                               parent = elm;                           \
+                               elm = tmp;                              \
+                       }                                               \
+                       RB_SET_BLACKRED(parent, gparent, field);        \
+                       RB_ROTATE_RIGHT(head, gparent, tmp, field);     \
+               } else {                                                \
+                       tmp = RB_LEFT(gparent, field);                  \
+                       if (tmp && RB_COLOR(tmp, field) == RB_RED) {    \
+                               RB_COLOR(tmp, field) = RB_BLACK;        \
+                               RB_SET_BLACKRED(parent, gparent, field);\
+                               elm = gparent;                          \
+                               continue;                               \
+                       }                                               \
+                       if (RB_LEFT(parent, field) == elm) {            \
+                               RB_ROTATE_RIGHT(head, parent, tmp, field);\
+                               tmp = parent;                           \
+                               parent = elm;                           \
+                               elm = tmp;                              \
+                       }                                               \
+                       RB_SET_BLACKRED(parent, gparent, field);        \
+                       RB_ROTATE_LEFT(head, gparent, tmp, field);      \
+               }                                                       \
+       }                                                               \
+       RB_COLOR(head->rbh_root, field) = RB_BLACK;                     \
+}                                                                      \
+                                                                       \
+attr void                                                              \
+name##_RB_REMOVE_COLOR(struct name *head, struct type *parent, struct type 
*elm) \
+{                                                                      \
+       struct type *tmp;                                               \
+       while ((elm == NULL || RB_COLOR(elm, field) == RB_BLACK) &&     \
+           elm != RB_ROOT(head)) {                                     \
+               if (RB_LEFT(parent, field) == elm) {                    \
+                       tmp = RB_RIGHT(parent, field);                  \
+                       if (RB_COLOR(tmp, field) == RB_RED) {           \
+                               RB_SET_BLACKRED(tmp, parent, field);    \
+                               RB_ROTATE_LEFT(head, parent, tmp, field);\
+                               tmp = RB_RIGHT(parent, field);          \
+                       }                                               \
+                       if ((RB_LEFT(tmp, field) == NULL ||             \
+                           RB_COLOR(RB_LEFT(tmp, field), field) == RB_BLACK) 
&&\
+                           (RB_RIGHT(tmp, field) == NULL ||            \
+                           RB_COLOR(RB_RIGHT(tmp, field), field) == RB_BLACK)) 
{\
+                               RB_COLOR(tmp, field) = RB_RED;          \
+                               elm = parent;                           \
+                               parent = RB_PARENT(elm, field);         \
+                       } else {                                        \
+                               if (RB_RIGHT(tmp, field) == NULL ||     \
+                                   RB_COLOR(RB_RIGHT(tmp, field), field) == 
RB_BLACK) {\
+                                       struct type *oleft;             \
+                                       if ((oleft = RB_LEFT(tmp, field)) \
+                                           != NULL)                    \
+                                               RB_COLOR(oleft, field) = 
RB_BLACK;\
+                                       RB_COLOR(tmp, field) = RB_RED;  \
+                                       RB_ROTATE_RIGHT(head, tmp, oleft, 
field);\
+                                       tmp = RB_RIGHT(parent, field);  \
+                               }                                       \
+                               RB_COLOR(tmp, field) = RB_COLOR(parent, field);\
+                               RB_COLOR(parent, field) = RB_BLACK;     \
+                               if (RB_RIGHT(tmp, field))               \
+                                       RB_COLOR(RB_RIGHT(tmp, field), field) = 
RB_BLACK;\
+                               RB_ROTATE_LEFT(head, parent, tmp, field);\
+                               elm = RB_ROOT(head);                    \
+                               break;                                  \
+                       }                                               \
+               } else {                                                \
+                       tmp = RB_LEFT(parent, field);                   \
+                       if (RB_COLOR(tmp, field) == RB_RED) {           \
+                               RB_SET_BLACKRED(tmp, parent, field);    \
+                               RB_ROTATE_RIGHT(head, parent, tmp, field);\
+                               tmp = RB_LEFT(parent, field);           \
+                       }                                               \
+                       if ((RB_LEFT(tmp, field) == NULL ||             \
+                           RB_COLOR(RB_LEFT(tmp, field), field) == RB_BLACK) 
&&\
+                           (RB_RIGHT(tmp, field) == NULL ||            \
+                           RB_COLOR(RB_RIGHT(tmp, field), field) == RB_BLACK)) 
{\
+                               RB_COLOR(tmp, field) = RB_RED;          \
+                               elm = parent;                           \
+                               parent = RB_PARENT(elm, field);         \
+                       } else {                                        \
+                               if (RB_LEFT(tmp, field) == NULL ||      \
+                                   RB_COLOR(RB_LEFT(tmp, field), field) == 
RB_BLACK) {\
+                                       struct type *oright;            \
+                                       if ((oright = RB_RIGHT(tmp, field)) \
+                                           != NULL)                    \
+                                               RB_COLOR(oright, field) = 
RB_BLACK;\
+                                       RB_COLOR(tmp, field) = RB_RED;  \
+                                       RB_ROTATE_LEFT(head, tmp, oright, 
field);\
+                                       tmp = RB_LEFT(parent, field);   \
+                               }                                       \
+                               RB_COLOR(tmp, field) = RB_COLOR(parent, field);\
+                               RB_COLOR(parent, field) = RB_BLACK;     \
+                               if (RB_LEFT(tmp, field))                \
+                                       RB_COLOR(RB_LEFT(tmp, field), field) = 
RB_BLACK;\
+                               RB_ROTATE_RIGHT(head, parent, tmp, field);\
+                               elm = RB_ROOT(head);                    \
+                               break;                                  \
+                       }                                               \
+               }                                                       \
+       }                                                               \
+       if (elm)                                                        \
+               RB_COLOR(elm, field) = RB_BLACK;                        \
+}                                                                      \
+                                                                       \
+attr struct type *                                                     \
+name##_RB_REMOVE(struct name *head, struct type *elm)                  \
+{                                                                      \
+       struct type *child, *parent, *old = elm;                        \
+       int color;                                                      \
+       if (RB_LEFT(elm, field) == NULL)                                \
+               child = RB_RIGHT(elm, field);                           \
+       else if (RB_RIGHT(elm, field) == NULL)                          \
+               child = RB_LEFT(elm, field);                            \
+       else {                                                          \
+               struct type *left;                                      \
+               elm = RB_RIGHT(elm, field);                             \
+               while ((left = RB_LEFT(elm, field)) != NULL)            \
+                       elm = left;                                     \
+               child = RB_RIGHT(elm, field);                           \
+               parent = RB_PARENT(elm, field);                         \
+               color = RB_COLOR(elm, field);                           \
+               if (child)                                              \
+                       RB_PARENT(child, field) = parent;               \
+               if (parent) {                                           \
+                       if (RB_LEFT(parent, field) == elm)              \
+                               RB_LEFT(parent, field) = child;         \
+                       else                                            \
+                               RB_RIGHT(parent, field) = child;        \
+                       RB_AUGMENT(parent);                             \
+               } else                                                  \
+                       RB_ROOT(head) = child;                          \
+               if (RB_PARENT(elm, field) == old)                       \
+                       parent = elm;                                   \
+               (elm)->field = (old)->field;                            \
+               if (RB_PARENT(old, field)) {                            \
+                       if (RB_LEFT(RB_PARENT(old, field), field) == old)\
+                               RB_LEFT(RB_PARENT(old, field), field) = elm;\
+                       else                                            \
+                               RB_RIGHT(RB_PARENT(old, field), field) = elm;\
+                       RB_AUGMENT(RB_PARENT(old, field));              \
+               } else                                                  \
+                       RB_ROOT(head) = elm;                            \
+               RB_PARENT(RB_LEFT(old, field), field) = elm;            \
+               if (RB_RIGHT(old, field))                               \
+                       RB_PARENT(RB_RIGHT(old, field), field) = elm;   \
+               if (parent) {                                           \
+                       left = parent;                                  \
+                       do {                                            \
+                               RB_AUGMENT(left);                       \
+                       } while ((left = RB_PARENT(left, field)) != NULL); \
+               }                                                       \
+               goto color;                                             \
+       }                                                               \
+       parent = RB_PARENT(elm, field);                                 \
+       color = RB_COLOR(elm, field);                                   \
+       if (child)                                                      \
+               RB_PARENT(child, field) = parent;                       \
+       if (parent) {                                                   \
+               if (RB_LEFT(parent, field) == elm)                      \
+                       RB_LEFT(parent, field) = child;                 \
+               else                                                    \
+                       RB_RIGHT(parent, field) = child;                \
+               RB_AUGMENT(parent);                                     \
+       } else                                                          \
+               RB_ROOT(head) = child;                                  \
+color:                                                                 \
+       if (color == RB_BLACK)                                          \
+               name##_RB_REMOVE_COLOR(head, parent, child);            \
+       return (old);                                                   \
+}                                                                      \
+                                                                       \
+/* Inserts a node into the RB tree */                                  \
+attr struct type *                                                     \
+name##_RB_INSERT(struct name *head, struct type *elm)                  \
+{                                                                      \
+       struct type *tmp;                                               \
+       struct type *parent = NULL;                                     \
+       int comp = 0;                                                   \
+       tmp = RB_ROOT(head);                                            \
+       while (tmp) {                                                   \
+               parent = tmp;                                           \
+               comp = (cmp)(elm, parent);                              \
+               if (comp < 0)                                           \
+                       tmp = RB_LEFT(tmp, field);                      \
+               else if (comp > 0)                                      \
+                       tmp = RB_RIGHT(tmp, field);                     \
+               else                                                    \
+                       return (tmp);                                   \
+       }                                                               \
+       RB_SET(elm, parent, field);                                     \
+       if (parent != NULL) {                                           \
+               if (comp < 0)                                           \
+                       RB_LEFT(parent, field) = elm;                   \
+               else                                                    \
+                       RB_RIGHT(parent, field) = elm;                  \
+               RB_AUGMENT(parent);                                     \
+       } else                                                          \
+               RB_ROOT(head) = elm;                                    \
+       name##_RB_INSERT_COLOR(head, elm);                              \
+       return (NULL);                                                  \
+}                                                                      \
+                                                                       \
+/* Finds the node with the same key as elm */                          \
+attr struct type *                                                     \
+name##_RB_FIND(struct name *head, struct type *elm)                    \
+{                                                                      \
+       struct type *tmp = RB_ROOT(head);                               \
+       int comp;                                                       \
+       while (tmp) {                                                   \
+               comp = cmp(elm, tmp);                                   \
+               if (comp < 0)                                           \
+                       tmp = RB_LEFT(tmp, field);                      \
+               else if (comp > 0)                                      \
+                       tmp = RB_RIGHT(tmp, field);                     \
+               else                                                    \
+                       return (tmp);                                   \
+       }                                                               \
+       return (NULL);                                                  \
+}                                                                      \
+                                                                       \
+/* Finds the first node greater than or equal to the search key */     \
+attr struct type *                                                     \
+name##_RB_NFIND(struct name *head, struct type *elm)                   \
+{                                                                      \
+       struct type *tmp = RB_ROOT(head);                               \
+       struct type *res = NULL;                                        \
+       int comp;                                                       \
+       while (tmp) {                                                   \
+               comp = cmp(elm, tmp);                                   \
+               if (comp < 0) {                                         \
+                       res = tmp;                                      \
+                       tmp = RB_LEFT(tmp, field);                      \
+               }                                                       \
+               else if (comp > 0)                                      \
+                       tmp = RB_RIGHT(tmp, field);                     \
+               else                                                    \
+                       return (tmp);                                   \
+       }                                                               \
+       return (res);                                                   \
+}                                                                      \
+                                                                       \
+/* ARGSUSED */                                                         \
+attr struct type *                                                     \
+name##_RB_NEXT(struct type *elm)                                       \
+{                                                                      \
+       if (RB_RIGHT(elm, field)) {                                     \
+               elm = RB_RIGHT(elm, field);                             \
+               while (RB_LEFT(elm, field))                             \
+                       elm = RB_LEFT(elm, field);                      \
+       } else {                                                        \
+               if (RB_PARENT(elm, field) &&                            \
+                   (elm == RB_LEFT(RB_PARENT(elm, field), field)))     \
+                       elm = RB_PARENT(elm, field);                    \
+               else {                                                  \
+                       while (RB_PARENT(elm, field) &&                 \
+                           (elm == RB_RIGHT(RB_PARENT(elm, field), field)))\
+                               elm = RB_PARENT(elm, field);            \
+                       elm = RB_PARENT(elm, field);                    \
+               }                                                       \
+       }                                                               \
+       return (elm);                                                   \
+}                                                                      \
+                                                                       \
+/* ARGSUSED */                                                         \
+attr struct type *                                                     \
+name##_RB_PREV(struct type *elm)                                       \
+{                                                                      \
+       if (RB_LEFT(elm, field)) {                                      \
+               elm = RB_LEFT(elm, field);                              \
+               while (RB_RIGHT(elm, field))                            \
+                       elm = RB_RIGHT(elm, field);                     \
+       } else {                                                        \
+               if (RB_PARENT(elm, field) &&                            \
+                   (elm == RB_RIGHT(RB_PARENT(elm, field), field)))    \
+                       elm = RB_PARENT(elm, field);                    \
+               else {                                                  \
+                       while (RB_PARENT(elm, field) &&                 \
+                           (elm == RB_LEFT(RB_PARENT(elm, field), field)))\
+                               elm = RB_PARENT(elm, field);            \
+                       elm = RB_PARENT(elm, field);                    \
+               }                                                       \
+       }                                                               \
+       return (elm);                                                   \
+}                                                                      \
+                                                                       \
+attr struct type *                                                     \
+name##_RB_MINMAX(struct name *head, int val)                           \
+{                                                                      \
+       struct type *tmp = RB_ROOT(head);                               \
+       struct type *parent = NULL;                                     \
+       while (tmp) {                                                   \
+               parent = tmp;                                           \
+               if (val < 0)                                            \
+                       tmp = RB_LEFT(tmp, field);                      \
+               else                                                    \
+                       tmp = RB_RIGHT(tmp, field);                     \
+       }                                                               \
+       return (parent);                                                \
+}
+
+#define RB_NEGINF      -1
+#define RB_INF 1
+
+#define RB_INSERT(name, x, y)  name##_RB_INSERT(x, y)
+#define RB_REMOVE(name, x, y)  name##_RB_REMOVE(x, y)
+#define RB_FIND(name, x, y)    name##_RB_FIND(x, y)
+#define RB_NFIND(name, x, y)   name##_RB_NFIND(x, y)
+#define RB_NEXT(name, x, y)    name##_RB_NEXT(y)
+#define RB_PREV(name, x, y)    name##_RB_PREV(y)
+#define RB_MIN(name, x)                name##_RB_MINMAX(x, RB_NEGINF)
+#define RB_MAX(name, x)                name##_RB_MINMAX(x, RB_INF)
+
+#define RB_FOREACH(x, name, head)                                      \
+       for ((x) = RB_MIN(name, head);                                  \
+            (x) != NULL;                                               \
+            (x) = name##_RB_NEXT(x))
+
+#define RB_FOREACH_FROM(x, name, y)                                    \
+       for ((x) = (y);                                                 \
+           ((x) != NULL) && ((y) = name##_RB_NEXT(x), (x) != NULL);    \
+            (x) = (y))
+
+#define RB_FOREACH_SAFE(x, name, head, y)                              \
+       for ((x) = RB_MIN(name, head);                                  \
+           ((x) != NULL) && ((y) = name##_RB_NEXT(x), (x) != NULL);    \
+            (x) = (y))
+
+#define RB_FOREACH_REVERSE(x, name, head)                              \
+       for ((x) = RB_MAX(name, head);                                  \
+            (x) != NULL;                                               \
+            (x) = name##_RB_PREV(x))
+
+#define RB_FOREACH_REVERSE_FROM(x, name, y)                            \
+       for ((x) = (y);                                                 \
+           ((x) != NULL) && ((y) = name##_RB_PREV(x), (x) != NULL);    \
+            (x) = (y))
+
+#define RB_FOREACH_REVERSE_SAFE(x, name, head, y)                      \
+       for ((x) = RB_MAX(name, head);                                  \
+           ((x) != NULL) && ((y) = name##_RB_PREV(x), (x) != NULL);    \
+            (x) = (y))
+
+#endif /* _SYS_TREE_H_ */
diff --git a/meta/recipes-core/musl/musl_git.bb 
b/meta/recipes-core/musl/musl_git.bb
index 051d925..5b94d1f 100644
--- a/meta/recipes-core/musl/musl_git.bb
+++ b/meta/recipes-core/musl/musl_git.bb
@@ -19,6 +19,7 @@ PROVIDES += "virtual/libc 
virtual/${TARGET_PREFIX}libc-for-gcc virtual/libiconv
 DEPENDS = "virtual/${TARGET_PREFIX}binutils \
            virtual/${TARGET_PREFIX}gcc-initial \
            libgcc-initial \
+           bsd-headers \
           "
 
 export CROSS_COMPILE="${TARGET_PREFIX}"
-- 
2.7.0

-- 
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