diff --git a/include/asn1c/INTEGER.h b/include/asn1c/INTEGER.h
index 62832b1..8411bfc 100644
--- a/include/asn1c/INTEGER.h
+++ b/include/asn1c/INTEGER.h
@@ -30,6 +30,8 @@
 	int map_count;				/* Elements in either map */
 	int extension;				/* This map is extensible */
 	int strict_enumeration;			/* Enumeration set is fixed */
+	int field_width;			/* Size of native integer */
+	int field_unsigned;			/* Signed=0, unsigned=1 */
 } asn_INTEGER_specifics_t;
 
 asn_struct_print_f INTEGER_print;
@@ -51,7 +53,9 @@
  * -1/ENOMEM: Memory allocation failed (in asn_long2INTEGER()).
  */
 int asn_INTEGER2long(const INTEGER_t *i, long *l);
+int asn_INTEGER2ulong(const INTEGER_t *i, unsigned long *l);
 int asn_long2INTEGER(INTEGER_t *i, long l);
+int asn_ulong2INTEGER(INTEGER_t *i, unsigned long l);
 
 /*
  * Convert the integer value into the corresponding enumeration map entry.
diff --git a/include/asn1c/Makefile.am b/include/asn1c/Makefile.am
index 81b654d..899ad78 100644
--- a/include/asn1c/Makefile.am
+++ b/include/asn1c/Makefile.am
@@ -1,3 +1,3 @@
 asn1cdir = $(includedir)/asn1c
 
-asn1c_HEADERS = ANY.h asn_application.h asn_codecs.h asn_codecs_prim.h asn_internal.h asn_SEQUENCE_OF.h asn_SET_OF.h asn_system.h ber_decoder.h ber_tlv_length.h ber_tlv_tag.h BIT_STRING.h BMPString.h BOOLEAN.h constraints.h constr_CHOICE.h constr_SEQUENCE.h constr_SEQUENCE_OF.h constr_SET.h constr_SET_OF.h constr_TYPE.h der_encoder.h ENUMERATED.h GeneralizedTime.h GeneralString.h GraphicString.h IA5String.h INTEGER.h ISO646String.h NativeEnumerated.h NativeInteger.h NativeReal.h NULL.h NumericString.h ObjectDescriptor.h OBJECT_IDENTIFIER.h OCTET_STRING.h per_decoder.h per_encoder.h per_support.h PrintableString.h REAL.h RELATIVE-OID.h T61String.h TeletexString.h UniversalString.h UTCTime.h UTF8String.h VideotexString.h VisibleString.h xer_decoder.h xer_encoder.h xer_support.h 
+asn1c_HEADERS = ANY.h asn_application.h asn_codecs.h asn_codecs_prim.h asn_internal.h asn_SEQUENCE_OF.h asn_SET_OF.h asn_system.h ber_decoder.h ber_tlv_length.h ber_tlv_tag.h BIT_STRING.h BMPString.h BOOLEAN.h constraints.h constr_CHOICE.h constr_SEQUENCE.h constr_SEQUENCE_OF.h constr_SET.h constr_SET_OF.h constr_TYPE.h der_encoder.h ENUMERATED.h GeneralizedTime.h GeneralString.h GraphicString.h IA5String.h INTEGER.h ISO646String.h NativeEnumerated.h NativeInteger.h NativeReal.h NULL.h NumericString.h ObjectDescriptor.h OBJECT_IDENTIFIER.h OCTET_STRING.h per_decoder.h per_encoder.h per_support.h PrintableString.h REAL.h RELATIVE-OID.h T61String.h TeletexString.h UniversalString.h UTCTime.h UTF8String.h VideotexString.h VisibleString.h xer_decoder.h xer_encoder.h xer_support.h per_opentype.h
diff --git a/include/asn1c/NativeReal.h b/include/asn1c/NativeReal.h
index 1f5266c..68a81d9 100644
--- a/include/asn1c/NativeReal.h
+++ b/include/asn1c/NativeReal.h
@@ -6,7 +6,7 @@
  * This type differs from the standard REAL in that it is modelled using
  * the fixed machine type (double), so it can hold only values of
  * limited precision. There is no explicit type (i.e., NativeReal_t).
- * Use of this type is normally enabled by -fnative-integers.
+ * Use of this type is normally enabled by -fnative-types.
  */
 #ifndef	ASN_TYPE_NativeReal_H
 #define	ASN_TYPE_NativeReal_H
@@ -25,6 +25,8 @@
 der_type_encoder_f NativeReal_encode_der;
 xer_type_decoder_f NativeReal_decode_xer;
 xer_type_encoder_f NativeReal_encode_xer;
+per_type_decoder_f NativeReal_decode_uper;
+per_type_encoder_f NativeReal_encode_uper;
 
 #ifdef __cplusplus
 }
diff --git a/include/asn1c/OCTET_STRING.h b/include/asn1c/OCTET_STRING.h
index 5150161..8df9a18 100644
--- a/include/asn1c/OCTET_STRING.h
+++ b/include/asn1c/OCTET_STRING.h
@@ -70,7 +70,13 @@
 	int struct_size;	/* Size of the structure */
 	int ctx_offset;		/* Offset of the asn_struct_ctx_t member */
 
-	int subvariant;		/* {0,1,2} for O-S, BIT STRING or ANY */
+	enum asn_OS_Subvariant {
+		ASN_OSUBV_ANY,	/* The open type (ANY) */
+		ASN_OSUBV_BIT,	/* BIT STRING */
+		ASN_OSUBV_STR,	/* String types, not {BMP,Universal}String  */
+		ASN_OSUBV_U16,	/* 16-bit character (BMPString) */
+		ASN_OSUBV_U32	/* 32-bit character (UniversalString) */
+	} subvariant;
 } asn_OCTET_STRING_specifics_t;
 
 #ifdef __cplusplus
diff --git a/include/asn1c/REAL.h b/include/asn1c/REAL.h
index 28ccf28..af3e84c 100644
--- a/include/asn1c/REAL.h
+++ b/include/asn1c/REAL.h
@@ -19,6 +19,8 @@
 asn_struct_print_f REAL_print;
 xer_type_decoder_f REAL_decode_xer;
 xer_type_encoder_f REAL_encode_xer;
+per_type_decoder_f REAL_decode_uper;
+per_type_encoder_f REAL_encode_uper;
 
 /***********************************
  * Some handy conversion routines. *
diff --git a/include/asn1c/asn_internal.h b/include/asn1c/asn_internal.h
index 67f055a..249d7ef 100644
--- a/include/asn1c/asn_internal.h
+++ b/include/asn1c/asn_internal.h
@@ -1,5 +1,5 @@
 /*-
- * Copyright (c) 2003, 2004, 2005 Lev Walkin <vlm@lionet.info>.
+ * Copyright (c) 2003, 2004, 2005, 2007 Lev Walkin <vlm@lionet.info>.
  * All rights reserved.
  * Redistribution and modifications are permitted subject to BSD license.
  */
@@ -20,7 +20,7 @@
 #endif
 
 /* Environment version might be used to avoid running with the old library */
-#define	ASN1C_ENVIRONMENT_VERSION	920	/* Compile-time version */
+#define	ASN1C_ENVIRONMENT_VERSION	922	/* Compile-time version */
 int get_asn1c_environment_version(void);	/* Run-time version */
 
 #define	CALLOC(nmemb, size)	calloc(nmemb, size)
@@ -35,10 +35,17 @@
 #ifndef	ASN_DEBUG	/* If debugging code is not defined elsewhere... */
 #if	EMIT_ASN_DEBUG == 1	/* And it was asked to emit this code... */
 #ifdef	__GNUC__
-#define	ASN_DEBUG(fmt, args...)	do {		\
-		fprintf(stderr, fmt, ##args);	\
-		fprintf(stderr, " (%s:%d)\n",	\
-			__FILE__, __LINE__);	\
+#ifdef	ASN_THREAD_SAFE
+#define	asn_debug_indent	0
+#else	/* !ASN_THREAD_SAFE */
+int asn_debug_indent;
+#endif	/* ASN_THREAD_SAFE */
+#define	ASN_DEBUG(fmt, args...)	do {			\
+		int adi = asn_debug_indent;		\
+		while(adi--) fprintf(stderr, " ");	\
+		fprintf(stderr, fmt, ##args);		\
+		fprintf(stderr, " (%s:%d)\n",		\
+			__FILE__, __LINE__);		\
 	} while(0)
 #else	/* !__GNUC__ */
 void ASN_DEBUG_f(const char *fmt, ...);
@@ -70,6 +77,7 @@
 	int __nl = ((nl) != 0);						\
 	int __i;							\
 	if(__nl) _ASN_CALLBACK("\n", 1);				\
+	if(__level < 0) __level = 0;					\
 	for(__i = 0; __i < __level; __i++)				\
 		_ASN_CALLBACK("    ", 4);				\
 	er.encoded += __nl + 4 * __level;				\
diff --git a/include/asn1c/asn_system.h b/include/asn1c/asn_system.h
index d7ebdaa..0a9b092 100644
--- a/include/asn1c/asn_system.h
+++ b/include/asn1c/asn_system.h
@@ -1,5 +1,6 @@
 /*-
- * Copyright (c) 2003, 2004 Lev Walkin <vlm@lionet.info>. All rights reserved.
+ * Copyright (c) 2003, 2004, 2007 Lev Walkin <vlm@lionet.info>.
+ * All rights reserved.
  * Redistribution and modifications are permitted subject to BSD license.
  */
 /*
@@ -16,20 +17,27 @@
 #include <stdlib.h>	/* For *alloc(3) */
 #include <string.h>	/* For memcpy(3) */
 #include <sys/types.h>	/* For size_t */
+#include <limits.h>	/* For LONG_MAX */
 #include <stdarg.h>	/* For va_start */
 #include <stddef.h>	/* for offsetof and ptrdiff_t */
 
 #ifdef	WIN32
 
 #include <malloc.h>
-#include <stdint.h>
 #define	 snprintf	_snprintf
 #define	 vsnprintf	_vsnprintf
 
+/* To avoid linking with ws2_32.lib, here's the definition of ntohl() */
+#define sys_ntohl(l)	((((l) << 24)  & 0xff000000)	\
+			| (((l) << 16) & 0xff0000)	\
+			| (((l) << 8)  & 0xff00)	\
+			| ((l) & 0xff))
+
 #ifdef _MSC_VER			/* MSVS.Net */
 #ifndef __cplusplus
 #define inline __inline
 #endif
+#ifndef	ASSUMESTDTYPES	/* Standard types have been defined elsewhere */
 #define	ssize_t		SSIZE_T
 typedef	char		int8_t;
 typedef	short		int16_t;
@@ -37,6 +45,7 @@
 typedef	unsigned char	uint8_t;
 typedef	unsigned short	uint16_t;
 typedef	unsigned int	uint32_t;
+#endif	/* ASSUMESTDTYPES */
 #define WIN32_LEAN_AND_MEAN
 #include <windows.h>
 #include <float.h>
@@ -44,6 +53,8 @@
 #define finite _finite
 #define copysign _copysign
 #define	ilogb	_logb
+#else	/* !_MSC_VER */
+#include <stdint.h>
 #endif	/* _MSC_VER */
 
 #else	/* !WIN32 */
@@ -74,6 +85,9 @@
 #endif	/* defined(sun) */
 #endif
 
+#include <netinet/in.h> /* for ntohl() */
+#define	sys_ntohl(foo)	ntohl(foo)
+
 #endif	/* defined(__vxworks) */
 
 #endif	/* WIN32 */
@@ -82,11 +96,22 @@
 #ifndef	GCC_PRINTFLIKE
 #define	GCC_PRINTFLIKE(fmt,var)	__attribute__((format(printf,fmt,var)))
 #endif
+#ifndef	GCC_NOTUSED
+#define	GCC_NOTUSED		__attribute__((unused))
+#endif
 #else
 #ifndef	GCC_PRINTFLIKE
 #define	GCC_PRINTFLIKE(fmt,var)	/* nothing */
 #endif
+#ifndef	GCC_NOTUSED
+#define	GCC_NOTUSED
 #endif
+#endif
+
+/* Figure out if thread safety is requested */
+#if !defined(ASN_THREAD_SAFE) && (defined(THREAD_SAFE) || defined(_REENTRANT))
+#define	ASN_THREAD_SAFE
+#endif	/* Thread safety */
 
 #ifndef	offsetof	/* If not defined by <stddef.h> */
 #define	offsetof(s, m)	((ptrdiff_t)&(((s *)0)->m) - (ptrdiff_t)((s *)0))
diff --git a/include/asn1c/ber_decoder.h b/include/asn1c/ber_decoder.h
index 768133b..9fe2e89 100644
--- a/include/asn1c/ber_decoder.h
+++ b/include/asn1c/ber_decoder.h
@@ -17,6 +17,7 @@
 /*
  * The BER decoder of any type.
  * This function may be invoked directly from the application.
+ * The der_encode() function (der_encoder.h) is an opposite to ber_decode().
  */
 asn_dec_rval_t ber_decode(struct asn_codec_ctx_s *opt_codec_ctx,
 	struct asn_TYPE_descriptor_s *type_descriptor,
diff --git a/include/asn1c/der_encoder.h b/include/asn1c/der_encoder.h
index 4e2fb06..61431c6 100644
--- a/include/asn1c/der_encoder.h
+++ b/include/asn1c/der_encoder.h
@@ -15,6 +15,7 @@
 
 /*
  * The DER encoder of any type. May be invoked by the application.
+ * The ber_decode() function (ber_decoder.h) is an opposite of der_encode().
  */
 asn_enc_rval_t der_encode(struct asn_TYPE_descriptor_s *type_descriptor,
 		void *struct_ptr,	/* Structure to be encoded */
diff --git a/include/asn1c/per_decoder.h b/include/asn1c/per_decoder.h
index 26aaf59..8397a54 100644
--- a/include/asn1c/per_decoder.h
+++ b/include/asn1c/per_decoder.h
@@ -1,5 +1,5 @@
 /*-
- * Copyright (c) 2005 Lev Walkin <vlm@lionet.info>. All rights reserved.
+ * Copyright (c) 2005, 2007 Lev Walkin <vlm@lionet.info>. All rights reserved.
  * Redistribution and modifications are permitted subject to BSD license.
  */
 #ifndef	_PER_DECODER_H_
@@ -15,7 +15,19 @@
 struct asn_TYPE_descriptor_s;	/* Forward declaration */
 
 /*
+ * Unaligned PER decoder of a "complete encoding" as per X.691#10.1.
+ * On success, this call always returns (.consumed >= 1), as per X.691#10.1.3.
+ */
+asn_dec_rval_t uper_decode_complete(struct asn_codec_ctx_s *opt_codec_ctx,
+	struct asn_TYPE_descriptor_s *type_descriptor,	/* Type to decode */
+	void **struct_ptr,	/* Pointer to a target structure's pointer */
+	const void *buffer,	/* Data to be decoded */
+	size_t size		/* Size of data buffer */
+	);
+
+/*
  * Unaligned PER decoder of any ASN.1 type. May be invoked by the application.
+ * WARNING: This call returns the number of BITS read from the stream. Beware.
  */
 asn_dec_rval_t uper_decode(struct asn_codec_ctx_s *opt_codec_ctx,
 	struct asn_TYPE_descriptor_s *type_descriptor,	/* Type to decode */
diff --git a/include/asn1c/per_encoder.h b/include/asn1c/per_encoder.h
index 9ac130b..95a6506 100644
--- a/include/asn1c/per_encoder.h
+++ b/include/asn1c/per_encoder.h
@@ -1,5 +1,5 @@
 /*-
- * Copyright (c) 2006 Lev Walkin <vlm@lionet.info>. All rights reserved.
+ * Copyright (c) 2006, 2007 Lev Walkin <vlm@lionet.info>. All rights reserved.
  * Redistribution and modifications are permitted subject to BSD license.
  */
 #ifndef	_PER_ENCODER_H_
@@ -16,6 +16,9 @@
 
 /*
  * Unaligned PER encoder of any ASN.1 type. May be invoked by the application.
+ * WARNING: This function returns the number of encoded bits in the .encoded
+ * field of the return value. Use the following formula to convert to bytes:
+ * 	bytes = ((.encoded + 7) / 8)
  */
 asn_enc_rval_t uper_encode(struct asn_TYPE_descriptor_s *type_descriptor,
 	void *struct_ptr,	/* Structure to be encoded */
@@ -23,7 +26,11 @@
 	void *app_key		/* Arbitrary callback argument */
 );
 
-/* A variant of uper_encode() which encodes data into the existing buffer */
+/*
+ * A variant of uper_encode() which encodes data into the existing buffer
+ * WARNING: This function returns the number of encoded bits in the .encoded
+ * field of the return value.
+ */
 asn_enc_rval_t uper_encode_to_buffer(
 	struct asn_TYPE_descriptor_s *type_descriptor,
 	void *struct_ptr,	/* Structure to be encoded */
@@ -31,6 +38,19 @@
 	size_t buffer_size	/* Initial buffer size (max) */
 );
 
+/*
+ * A variant of uper_encode_to_buffer() which allocates buffer itself.
+ * Returns the number of bytes in the buffer or -1 in case of failure.
+ * WARNING: This function produces a "Production of the complete encoding",
+ * with length of at least one octet. Contrast this to precise bit-packing
+ * encoding of uper_encode() and uper_encode_to_buffer().
+ */
+ssize_t uper_encode_to_new_buffer(
+	struct asn_TYPE_descriptor_s *type_descriptor,
+	asn_per_constraints_t *constraints,
+	void *struct_ptr,	/* Structure to be encoded */
+	void **buffer_r		/* Buffer allocated and returned */
+);
 
 /*
  * Type of the generic PER encoder function.
diff --git a/include/asn1c/per_opentype.h b/include/asn1c/per_opentype.h
new file mode 100644
index 0000000..facfaa6
--- /dev/null
+++ b/include/asn1c/per_opentype.h
@@ -0,0 +1,22 @@
+/*
+ * Copyright (c) 2007 Lev Walkin <vlm@lionet.info>. All rights reserved.
+ * Redistribution and modifications are permitted subject to BSD license.
+ */
+#ifndef	_PER_OPENTYPE_H_
+#define	_PER_OPENTYPE_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+asn_dec_rval_t uper_open_type_get(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td, asn_per_constraints_t *constraints, void **sptr, asn_per_data_t *pd);
+
+int uper_open_type_skip(asn_codec_ctx_t *opt_codec_ctx, asn_per_data_t *pd);
+
+int uper_open_type_put(asn_TYPE_descriptor_t *td, asn_per_constraints_t *constraints, void *sptr, asn_per_outp_t *po);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif	/* _PER_OPENTYPE_H_ */
diff --git a/include/asn1c/per_support.h b/include/asn1c/per_support.h
index 420bb83..7cb1a0c 100644
--- a/include/asn1c/per_support.h
+++ b/include/asn1c/per_support.h
@@ -1,5 +1,6 @@
 /*
- * Copyright (c) 2005, 2006 Lev Walkin <vlm@lionet.info>. All rights reserved.
+ * Copyright (c) 2005, 2006, 2007 Lev Walkin <vlm@lionet.info>.
+ * All rights reserved.
  * Redistribution and modifications are permitted subject to BSD license.
  */
 #ifndef	_PER_SUPPORT_H_
@@ -29,15 +30,20 @@
 typedef struct asn_per_constraints_s {
 	asn_per_constraint_t value;
 	asn_per_constraint_t size;
+	int (*value2code)(unsigned int value);
+	int (*code2value)(unsigned int code);
 } asn_per_constraints_t;
 
 /*
  * This structure describes a position inside an incoming PER bit stream.
  */
 typedef struct asn_per_data_s {
- const uint8_t *buffer;	/* Pointer to the octet stream */
-        size_t  nboff;	/* Bit offset to the meaningful bit */
-        size_t  nbits;	/* Number of bits in the stream */
+  const uint8_t *buffer;  /* Pointer to the octet stream */
+         size_t  nboff;   /* Bit offset to the meaningful bit */
+         size_t  nbits;   /* Number of bits in the stream */
+         size_t  moved;   /* Number of bits moved through this bit stream */
+  int (*refill)(struct asn_per_data_s *);
+  void *refill_key;
 } asn_per_data_t;
 
 /*
@@ -47,6 +53,9 @@
  */
 int32_t per_get_few_bits(asn_per_data_t *per_data, int get_nbits);
 
+/* Undo the immediately preceeding "get_few_bits" operation */
+void per_get_undo(asn_per_data_t *per_data, int get_nbits);
+
 /*
  * Extract a large number of bits from the specified PER data pointer.
  * This function returns -1 if the specified number of bits could not be
@@ -63,10 +72,18 @@
 			int *repeat);
 
 /*
+ * Get the normally small length "n".
+ */
+ssize_t uper_get_nslength(asn_per_data_t *pd);
+
+/*
  * Get the normally small non-negative whole number.
  */
 ssize_t uper_get_nsnnwn(asn_per_data_t *pd);
 
+/* Non-thread-safe debugging function, don't use it */
+char *per_data_string(asn_per_data_t *pd);
+
 /*
  * This structure supports forming PER output.
  */
@@ -94,6 +111,12 @@
 ssize_t uper_put_length(asn_per_outp_t *po, size_t whole_length);
 
 /*
+ * Put the normally small length "n" to the Unaligned PER stream.
+ * Returns 0 or -1.
+ */
+int uper_put_nslength(asn_per_outp_t *po, size_t length);
+
+/*
  * Put the normally small non-negative whole number.
  */
 int uper_put_nsnnwn(asn_per_outp_t *po, int n);