Index: uspace/lib/c/include/as.h
===================================================================
--- uspace/lib/c/include/as.h	(revision 933cadfdb63d0a16870db764880b5c144894e112)
+++ uspace/lib/c/include/as.h	(revision b678410d7e2eada8e2e3f65aaf7c4efc831777d6)
@@ -56,5 +56,5 @@
 extern void *as_area_create(void *address, size_t size, int flags);
 extern int as_area_resize(void *address, size_t size, int flags);
-extern int as_area_change_flags(void *address, int flags);
+int as_area_change_flags(void *address, int flags);
 extern int as_area_destroy(void *address);
 extern void *set_maxheapsize(size_t mhs);
Index: uspace/lib/c/include/dlfcn.h
===================================================================
--- uspace/lib/c/include/dlfcn.h	(revision b678410d7e2eada8e2e3f65aaf7c4efc831777d6)
+++ uspace/lib/c/include/dlfcn.h	(revision b678410d7e2eada8e2e3f65aaf7c4efc831777d6)
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2008 Jiri Svoboda
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - 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.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * 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.
+ */
+
+/** @addtogroup rtld
+ * @{
+ */
+/** @file
+ * @brief UNIX-like dynamic linker interface.
+ */
+
+#ifndef LIBC_DLFCN_H_
+#define LIBC_DLFCN_H_
+
+void *dlopen(const char *, int);
+void *dlsym(void *, const char *);
+
+#endif
+
+/**
+ * @}
+ */
Index: uspace/lib/c/include/limits.h
===================================================================
--- uspace/lib/c/include/limits.h	(revision b678410d7e2eada8e2e3f65aaf7c4efc831777d6)
+++ uspace/lib/c/include/limits.h	(revision b678410d7e2eada8e2e3f65aaf7c4efc831777d6)
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2006 Josef Cejka
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - 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.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * 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.
+ */
+
+/** @addtogroup libc
+ * @{
+ */
+/** @file
+ */
+
+#ifndef LIBC_LIMITS_H_
+#define LIBC_LIMITS_H_
+
+#include <stdint.h>
+#include <libarch/limits.h>
+
+/* char */
+#define SCHAR_MIN MIN_INT8
+#define SCHAR_MAX MAX_INT8
+#define UCHAR_MIN MIN_UINT8
+#define UCHAR_MAX MAX_UINT8
+
+#ifdef __CHAR_UNSIGNED__
+# define CHAR_MIN UCHAR_MIN
+# define CHAR_MAX UCHAR_MAX
+#else
+# define CHAR_MIN SCHAR_MIN
+# define CHAR_MAX SCHAR_MAX
+#endif
+
+/* short int */
+#define SHRT_MIN MIN_INT16
+#define SHRT_MAX MAX_INT16
+#define USHRT_MIN MIN_UINT16
+#define USHRT_MAX MAX_UINT16
+
+#define INT_MIN MIN_INT32
+#define INT_MAX MAX_INT32
+#define UINT_MIN MIN_UINT32
+#define UINT_MAX MAX_UINT32
+
+#define LLONG_MIN MIN_INT64
+#define LLONG_MAX MAX_INT64
+#define ULLONG_MIN MIN_UINT64
+#define ULLONG_MAX MAX_UINT64
+
+#endif
+
+/** @}
+ */
Index: uspace/lib/c/include/loader/pcb.h
===================================================================
--- uspace/lib/c/include/loader/pcb.h	(revision 933cadfdb63d0a16870db764880b5c144894e112)
+++ uspace/lib/c/include/loader/pcb.h	(revision b678410d7e2eada8e2e3f65aaf7c4efc831777d6)
@@ -72,4 +72,6 @@
 	/** Pointer to ELF dynamic section of the program. */
 	void *dynamic;
+	/** Pointer to dynamic linker state structure (runtime_env_t). */
+	void *rtld_runtime;
 } pcb_t;