Add a cast to the EXTRACT_U_1() macro

[tcpdump] / extract.h

diff --git a/extract.h b/extract.h
index 04367546c6ed4f8913678408ab4229b9e09abc69..0ea84e925b4ba5a78b21fbb9f367c9ec74b4201f 100644 (file)
--- a/extract.h
+++ b/extract.h
@@ -19,12 +19,14 @@
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  */
 
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  */
 

+#include <string.h>
+

 /*
 /*

- * For 8-bit values; provided for the sake of completeness.  Byte order
+ * For 8-bit values; needed to fetch a one-byte value.  Byte order

  * isn't relevant, and alignment isn't an issue.
  */
  * isn't relevant, and alignment isn't an issue.
  */

-#define EXTRACT_8BITS(p)       (*(p))
-#define EXTRACT_LE_8BITS(p)    (*(p))
+#define EXTRACT_U_1(p) ((uint8_t)(*(p)))
+#define EXTRACT_S_1(p) ((int8_t)(*(p)))

 
 /*
  * Inline functions or macros to extract possibly-unaligned big-endian
 
 /*
  * Inline functions or macros to extract possibly-unaligned big-endian


@@ -62,19 +64,85 @@
 #define UNALIGNED_OK
 #endif
 
 #define UNALIGNED_OK
 #endif
 

-#ifdef LBL_ALIGN
+#if (defined(__i386__) || defined(_M_IX86) || defined(__X86__) || defined(__x86_64__) || defined(_M_X64)) || \
+    (defined(__arm__) || defined(_M_ARM) || defined(__aarch64__)) || \
+    (defined(__m68k__) && (!defined(__mc68000__) && !defined(__mc68010__))) || \
+    (defined(__ppc__) || defined(__ppc64__) || defined(_M_PPC) || defined(_ARCH_PPC) || defined(_ARCH_PPC64)) || \
+    (defined(__s390__) || defined(__s390x__) || defined(__zarch__))

 /*
 /*

- * The processor doesn't natively handle unaligned loads.
+ * The processor natively handles unaligned loads, so we can just
+ * cast the pointer and fetch through it.
+ *
+ * XXX - are those all the x86 tests we need?
+ * XXX - do we need to worry about ARMv1 through ARMv5, which didn't
+ * support unaligned loads, and, if so, do we need to worry about all
+ * of them, or just some of them, e.g. ARMv5?
+ * XXX - are those the only 68k tests we need not to generated
+ * unaligned accesses if the target is the 68000 or 68010?
+ * XXX - are there any tests we don't need, because some definitions are for
+ * compilers that also predefine the GCC symbols?
+ * XXX - do we need to test for both 32-bit and 64-bit versions of those
+ * architectures in all cases?

  */
  */

-#if defined(__GNUC__) && defined(HAVE___ATTRIBUTE__) && \
+UNALIGNED_OK static inline uint16_t
+EXTRACT_BE_U_2(const void *p)
+{
+       return ((uint16_t)ntohs(*(const uint16_t *)(p)));
+}
+
+UNALIGNED_OK static inline int16_t
+EXTRACT_BE_S_2(const void *p)
+{
+       return ((int16_t)ntohs(*(const int16_t *)(p)));
+}
+
+UNALIGNED_OK static inline uint32_t
+EXTRACT_BE_U_4(const void *p)
+{
+       return ((uint32_t)ntohl(*(const uint32_t *)(p)));
+}
+
+UNALIGNED_OK static inline int32_t
+EXTRACT_BE_S_4(const void *p)
+{
+       return ((int32_t)ntohl(*(const int32_t *)(p)));
+}
+
+UNALIGNED_OK static inline uint64_t
+EXTRACT_BE_U_8(const void *p)
+{
+       return ((uint64_t)(((uint64_t)ntohl(*((const uint32_t *)(p) + 0))) << 32 |
+               ((uint64_t)ntohl(*((const uint32_t *)(p) + 1))) << 0));
+
+}
+
+UNALIGNED_OK static inline int64_t
+EXTRACT_BE_S_8(const void *p)
+{
+       return ((int64_t)(((int64_t)ntohl(*((const uint32_t *)(p) + 0))) << 32 |
+               ((uint64_t)ntohl(*((const uint32_t *)(p) + 1))) << 0));
+
+}
+
+/*
+ * Extract an IPv4 address, which is in network byte order, and not
+ * necessarily aligned, and provide the result in host byte order.
+ */
+UNALIGNED_OK static inline uint32_t
+EXTRACT_IPV4_TO_HOST_ORDER(const void *p)
+{
+       return ((uint32_t)ntohl(*(const uint32_t *)(p)));
+}
+#elif ND_IS_AT_LEAST_GNUC_VERSION(2,0) && \

     (defined(__alpha) || defined(__alpha__) || \
      defined(__mips) || defined(__mips__))
     (defined(__alpha) || defined(__alpha__) || \
      defined(__mips) || defined(__mips__))

-

 /*
 /*

-* This is a GCC-compatible compiler and we have __attribute__, which
- * we assume that mean we have __attribute__((packed)), and this is
- * MIPS or Alpha, which has instructions that can help when doing
- * unaligned loads.
+ * This is MIPS or Alpha, which don't natively handle unaligned loads,
+ * but which have instructions that can help when doing unaligned
+ * loads, and this is GCC 2.0 or later or a compiler that claims to
+ * be GCC 2.0 or later, which we assume that mean we have
+ * __attribute__((packed)), which we can use to convince the compiler
+ * to generate those instructions.

  *
  * Declare packed structures containing a uint16_t and a uint32_t,
  * cast the pointer to point to one of those, and fetch through it;
  *
  * Declare packed structures containing a uint16_t and a uint32_t,
  * cast the pointer to point to one of those, and fetch through it;


@@ -124,46 +192,91 @@ typedef struct {
        uint16_t        val;
 } __attribute__((packed)) unaligned_uint16_t;
 
        uint16_t        val;
 } __attribute__((packed)) unaligned_uint16_t;
 

+typedef struct {
+       int16_t         val;
+} __attribute__((packed)) unaligned_int16_t;
+

 typedef struct {
        uint32_t        val;
 } __attribute__((packed)) unaligned_uint32_t;
 
 typedef struct {
        uint32_t        val;
 } __attribute__((packed)) unaligned_uint32_t;
 

+typedef struct {
+       int32_t         val;
+} __attribute__((packed)) unaligned_int32_t;
+

 UNALIGNED_OK static inline uint16_t
 UNALIGNED_OK static inline uint16_t

-EXTRACT_16BITS(const void *p)
+EXTRACT_BE_U_2(const void *p)

 {
        return ((uint16_t)ntohs(((const unaligned_uint16_t *)(p))->val));
 }
 
 {
        return ((uint16_t)ntohs(((const unaligned_uint16_t *)(p))->val));
 }
 

+UNALIGNED_OK static inline int16_t
+EXTRACT_BE_S_2(const void *p)
+{
+       return ((int16_t)ntohs(((const unaligned_int16_t *)(p))->val));
+}
+

 UNALIGNED_OK static inline uint32_t
 UNALIGNED_OK static inline uint32_t

-EXTRACT_32BITS(const void *p)
+EXTRACT_BE_U_4(const void *p)

 {
        return ((uint32_t)ntohl(((const unaligned_uint32_t *)(p))->val));
 }
 
 {
        return ((uint32_t)ntohl(((const unaligned_uint32_t *)(p))->val));
 }
 

+UNALIGNED_OK static inline int32_t
+EXTRACT_BE_S_4(const void *p)
+{
+       return ((int32_t)ntohl(((const unaligned_int32_t *)(p))->val));
+}
+

 UNALIGNED_OK static inline uint64_t
 UNALIGNED_OK static inline uint64_t

-EXTRACT_64BITS(const void *p)
+EXTRACT_BE_U_8(const void *p)

 {
        return ((uint64_t)(((uint64_t)ntohl(((const unaligned_uint32_t *)(p) + 0)->val)) << 32 |
                ((uint64_t)ntohl(((const unaligned_uint32_t *)(p) + 1)->val)) << 0));
 }
 
 {
        return ((uint64_t)(((uint64_t)ntohl(((const unaligned_uint32_t *)(p) + 0)->val)) << 32 |
                ((uint64_t)ntohl(((const unaligned_uint32_t *)(p) + 1)->val)) << 0));
 }
 

-#else /* have to do it a byte at a time */
+UNALIGNED_OK static inline int64_t
+EXTRACT_BE_S_8(const void *p)
+{
+       return ((int64_t)(((uint64_t)ntohl(((const unaligned_uint32_t *)(p) + 0)->val)) << 32 |
+               ((uint64_t)ntohl(((const unaligned_uint32_t *)(p) + 1)->val)) << 0));
+}
+
+/*
+ * Extract an IPv4 address, which is in network byte order, and not
+ * necessarily aligned, and provide the result in host byte order.
+ */
+UNALIGNED_OK static inline uint32_t
+EXTRACT_IPV4_TO_HOST_ORDER(const void *p)
+{
+       return ((uint32_t)ntohl(((const unaligned_uint32_t *)(p))->val));
+}
+#else

 /*
 /*

- * This isn't a GCC-compatible compiler, we don't have __attribute__,
+ * This architecture doesn't natively support unaligned loads, and either
+ * this isn't a GCC-compatible compiler, we don't have __attribute__,

  * or we do but we don't know of any better way with this instruction
  * set to do unaligned loads, so do unaligned loads of big-endian
  * quantities the hard way - fetch the bytes one at a time and
  * assemble them.
  */
  * or we do but we don't know of any better way with this instruction
  * set to do unaligned loads, so do unaligned loads of big-endian
  * quantities the hard way - fetch the bytes one at a time and
  * assemble them.
  */

-#define EXTRACT_16BITS(p) \
+#define EXTRACT_BE_U_2(p) \

        ((uint16_t)(((uint16_t)(*((const uint8_t *)(p) + 0)) << 8) | \
                    ((uint16_t)(*((const uint8_t *)(p) + 1)) << 0)))
        ((uint16_t)(((uint16_t)(*((const uint8_t *)(p) + 0)) << 8) | \
                    ((uint16_t)(*((const uint8_t *)(p) + 1)) << 0)))

-#define EXTRACT_32BITS(p) \
+#define EXTRACT_BE_S_2(p) \
+       ((int16_t)(((uint16_t)(*((const uint8_t *)(p) + 0)) << 8) | \
+                  ((uint16_t)(*((const uint8_t *)(p) + 1)) << 0)))
+#define EXTRACT_BE_U_4(p) \

        ((uint32_t)(((uint32_t)(*((const uint8_t *)(p) + 0)) << 24) | \
                    ((uint32_t)(*((const uint8_t *)(p) + 1)) << 16) | \
                    ((uint32_t)(*((const uint8_t *)(p) + 2)) << 8) | \
                    ((uint32_t)(*((const uint8_t *)(p) + 3)) << 0)))
        ((uint32_t)(((uint32_t)(*((const uint8_t *)(p) + 0)) << 24) | \
                    ((uint32_t)(*((const uint8_t *)(p) + 1)) << 16) | \
                    ((uint32_t)(*((const uint8_t *)(p) + 2)) << 8) | \
                    ((uint32_t)(*((const uint8_t *)(p) + 3)) << 0)))

-#define EXTRACT_64BITS(p) \
+#define EXTRACT_BE_S_4(p) \
+       ((int32_t)(((uint32_t)(*((const uint8_t *)(p) + 0)) << 24) | \
+                  ((uint32_t)(*((const uint8_t *)(p) + 1)) << 16) | \
+                  ((uint32_t)(*((const uint8_t *)(p) + 2)) << 8) | \
+                  ((uint32_t)(*((const uint8_t *)(p) + 3)) << 0)))
+#define EXTRACT_BE_U_8(p) \

        ((uint64_t)(((uint64_t)(*((const uint8_t *)(p) + 0)) << 56) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 1)) << 48) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 2)) << 40) | \
        ((uint64_t)(((uint64_t)(*((const uint8_t *)(p) + 0)) << 56) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 1)) << 48) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 2)) << 40) | \


@@ -172,47 +285,133 @@ EXTRACT_64BITS(const void *p)
                    ((uint64_t)(*((const uint8_t *)(p) + 5)) << 16) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 6)) << 8) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 7)) << 0)))
                    ((uint64_t)(*((const uint8_t *)(p) + 5)) << 16) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 6)) << 8) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 7)) << 0)))

-#endif /* must special-case unaligned accesses */
-#else /* LBL_ALIGN */
+#define EXTRACT_BE_S_8(p) \
+       ((int64_t)(((uint64_t)(*((const uint8_t *)(p) + 0)) << 56) | \
+                  ((uint64_t)(*((const uint8_t *)(p) + 1)) << 48) | \
+                  ((uint64_t)(*((const uint8_t *)(p) + 2)) << 40) | \
+                  ((uint64_t)(*((const uint8_t *)(p) + 3)) << 32) | \
+                  ((uint64_t)(*((const uint8_t *)(p) + 4)) << 24) | \
+                  ((uint64_t)(*((const uint8_t *)(p) + 5)) << 16) | \
+                  ((uint64_t)(*((const uint8_t *)(p) + 6)) << 8) | \
+                  ((uint64_t)(*((const uint8_t *)(p) + 7)) << 0)))
+

 /*
 /*

- * The processor natively handles unaligned loads, so we can just
- * cast the pointer and fetch through it.
+ * Extract an IPv4 address, which is in network byte order, and not
+ * necessarily aligned, and provide the result in host byte order.
+ */
+#define EXTRACT_IPV4_TO_HOST_ORDER(p) \
+       ((uint32_t)(((uint32_t)(*((const uint8_t *)(p) + 0)) << 24) | \
+                   ((uint32_t)(*((const uint8_t *)(p) + 1)) << 16) | \
+                   ((uint32_t)(*((const uint8_t *)(p) + 2)) << 8) | \
+                   ((uint32_t)(*((const uint8_t *)(p) + 3)) << 0)))
+#endif /* unaligned access checks */
+
+/*
+ * Extract numerical values in *host* byte order.  (Some metadata
+ * headers are in the byte order of the host that wrote the file,
+ * and libpcap translate them to the byte order of the host
+ * reading the file.  This means that if a program on that host
+ * reads with libpcap and writes to a new file, the new file will
+ * be written in the byte order of the host writing the file.  Thus,
+ * the magic number in pcap files and byte-order magic in pcapng
+ * files can be used to determine the byte order in those metadata
+ * headers.)
+ *
+ * XXX - on platforms that can do unaligned accesses, just cast and
+ * dereference the pointer.

  */
  */

-static inline uint16_t UNALIGNED_OK
-EXTRACT_16BITS(const void *p)
+static inline uint16_t
+EXTRACT_HE_U_2(const void *p)

 {
 {

-       return ((uint16_t)ntohs(*(const uint16_t *)(p)));
+       uint16_t val;
+
+       UNALIGNED_MEMCPY(&val, p, sizeof(uint16_t));
+       return val;

 }
 
 }
 

-static inline uint32_t UNALIGNED_OK
-EXTRACT_32BITS(const void *p)
+static inline int16_t
+EXTRACT_HE_S_2(const void *p)

 {
 {

-       return ((uint32_t)ntohl(*(const uint32_t *)(p)));
+       int16_t val;
+
+       UNALIGNED_MEMCPY(&val, p, sizeof(int16_t));
+       return val;

 }
 
 }
 

-static inline uint64_t UNALIGNED_OK
-EXTRACT_64BITS(const void *p)
+static inline uint32_t
+EXTRACT_HE_U_4(const void *p)

 {
 {

-       return ((uint64_t)(((uint64_t)ntohl(*((const uint32_t *)(p) + 0))) << 32 |
-               ((uint64_t)ntohl(*((const uint32_t *)(p) + 1))) << 0));
+       uint32_t val;

 
 

+       UNALIGNED_MEMCPY(&val, p, sizeof(uint32_t));
+       return val;

 }
 
 }
 

-#endif /* LBL_ALIGN */
+static inline int32_t
+EXTRACT_HE_S_4(const void *p)
+{
+       int32_t val;
+
+       UNALIGNED_MEMCPY(&val, p, sizeof(int32_t));
+       return val;
+}

 
 

-#define EXTRACT_24BITS(p) \
+/*
+ * Extract an IPv4 address, which is in network byte order, and which
+ * is not necessarily aligned on a 4-byte boundary, and provide the
+ * result in network byte order.
+ *
+ * This works the same way regardless of the host's byte order.
+ */
+static inline uint32_t
+EXTRACT_IPV4_TO_NETWORK_ORDER(const void *p)
+{
+       uint32_t addr;
+
+       UNALIGNED_MEMCPY(&addr, p, sizeof(uint32_t));
+       return addr;
+}
+
+/*
+ * Non-power-of-2 sizes.
+ */
+#define EXTRACT_BE_U_3(p) \

        ((uint32_t)(((uint32_t)(*((const uint8_t *)(p) + 0)) << 16) | \
                    ((uint32_t)(*((const uint8_t *)(p) + 1)) << 8) | \
                    ((uint32_t)(*((const uint8_t *)(p) + 2)) << 0)))
 
        ((uint32_t)(((uint32_t)(*((const uint8_t *)(p) + 0)) << 16) | \
                    ((uint32_t)(*((const uint8_t *)(p) + 1)) << 8) | \
                    ((uint32_t)(*((const uint8_t *)(p) + 2)) << 0)))
 

-#define EXTRACT_40BITS(p) \
+#define EXTRACT_BE_S_3(p) \
+       (((*((const uint8_t *)(p) + 0)) & 0x80) ? \
+         ((int32_t)(((uint32_t)(*((const uint8_t *)(p) + 0)) << 16) | \
+                    ((uint32_t)(*((const uint8_t *)(p) + 1)) << 8) | \
+                    ((uint32_t)(*((const uint8_t *)(p) + 2)) << 0))) : \
+         ((int32_t)(0xFF000000U | \
+                    ((uint32_t)(*((const uint8_t *)(p) + 0)) << 16) | \
+                    ((uint32_t)(*((const uint8_t *)(p) + 1)) << 8) | \
+                    ((uint32_t)(*((const uint8_t *)(p) + 2)) << 0))))
+
+#define EXTRACT_BE_U_5(p) \

        ((uint64_t)(((uint64_t)(*((const uint8_t *)(p) + 0)) << 32) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 1)) << 24) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 2)) << 16) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 3)) << 8) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 4)) << 0)))
 
        ((uint64_t)(((uint64_t)(*((const uint8_t *)(p) + 0)) << 32) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 1)) << 24) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 2)) << 16) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 3)) << 8) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 4)) << 0)))
 

-#define EXTRACT_48BITS(p) \
+#define EXTRACT_BE_S_5(p) \
+       (((*((const uint8_t *)(p) + 0)) & 0x80) ? \
+         ((int64_t)(((uint64_t)(*((const uint8_t *)(p) + 0)) << 32) | \
+                    ((uint64_t)(*((const uint8_t *)(p) + 1)) << 24) | \
+                    ((uint64_t)(*((const uint8_t *)(p) + 2)) << 16) | \
+                    ((uint64_t)(*((const uint8_t *)(p) + 3)) << 8) | \
+                    ((uint64_t)(*((const uint8_t *)(p) + 4)) << 0))) : \
+         ((int64_t)(INT64_T_CONSTANT(0xFFFFFF0000000000U) | \
+                    ((uint64_t)(*((const uint8_t *)(p) + 0)) << 32) | \
+                    ((uint64_t)(*((const uint8_t *)(p) + 1)) << 24) | \
+                    ((uint64_t)(*((const uint8_t *)(p) + 2)) << 16) | \
+                    ((uint64_t)(*((const uint8_t *)(p) + 3)) << 8) | \
+                    ((uint64_t)(*((const uint8_t *)(p) + 4)) << 0))))
+
+#define EXTRACT_BE_U_6(p) \

        ((uint64_t)(((uint64_t)(*((const uint8_t *)(p) + 0)) << 40) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 1)) << 32) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 2)) << 24) | \
        ((uint64_t)(((uint64_t)(*((const uint8_t *)(p) + 0)) << 40) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 1)) << 32) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 2)) << 24) | \


@@ -220,7 +419,23 @@ EXTRACT_64BITS(const void *p)
                    ((uint64_t)(*((const uint8_t *)(p) + 4)) << 8) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 5)) << 0)))
 
                    ((uint64_t)(*((const uint8_t *)(p) + 4)) << 8) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 5)) << 0)))
 

-#define EXTRACT_56BITS(p) \
+#define EXTRACT_BE_S_6(p) \
+       (((*((const uint8_t *)(p) + 0)) & 0x80) ? \
+         ((uint64_t)(((uint64_t)(*((const uint8_t *)(p) + 0)) << 40) | \
+                     ((uint64_t)(*((const uint8_t *)(p) + 1)) << 32) | \
+                     ((uint64_t)(*((const uint8_t *)(p) + 2)) << 24) | \
+                     ((uint64_t)(*((const uint8_t *)(p) + 3)) << 16) | \
+                     ((uint64_t)(*((const uint8_t *)(p) + 4)) << 8) | \
+                     ((uint64_t)(*((const uint8_t *)(p) + 5)) << 0))) : \
+         ((int64_t)(INT64_T_CONSTANT(0xFFFFFFFF00000000U) | \
+                     ((uint64_t)(*((const uint8_t *)(p) + 0)) << 40) | \
+                     ((uint64_t)(*((const uint8_t *)(p) + 1)) << 32) | \
+                     ((uint64_t)(*((const uint8_t *)(p) + 2)) << 24) | \
+                     ((uint64_t)(*((const uint8_t *)(p) + 3)) << 16) | \
+                     ((uint64_t)(*((const uint8_t *)(p) + 4)) << 8) | \
+                     ((uint64_t)(*((const uint8_t *)(p) + 5)) << 0))))
+
+#define EXTRACT_BE_U_7(p) \

        ((uint64_t)(((uint64_t)(*((const uint8_t *)(p) + 0)) << 48) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 1)) << 40) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 2)) << 32) | \
        ((uint64_t)(((uint64_t)(*((const uint8_t *)(p) + 0)) << 48) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 1)) << 40) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 2)) << 32) | \


@@ -229,23 +444,53 @@ EXTRACT_64BITS(const void *p)
                    ((uint64_t)(*((const uint8_t *)(p) + 5)) << 8) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 6)) << 0)))
 
                    ((uint64_t)(*((const uint8_t *)(p) + 5)) << 8) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 6)) << 0)))
 

+#define EXTRACT_BE_S_7(p) \
+       (((*((const uint8_t *)(p) + 0)) & 0x80) ? \
+         ((int64_t)(((uint64_t)(*((const uint8_t *)(p) + 0)) << 48) | \
+                    ((uint64_t)(*((const uint8_t *)(p) + 1)) << 40) | \
+                    ((uint64_t)(*((const uint8_t *)(p) + 2)) << 32) | \
+                    ((uint64_t)(*((const uint8_t *)(p) + 3)) << 24) | \
+                    ((uint64_t)(*((const uint8_t *)(p) + 4)) << 16) | \
+                    ((uint64_t)(*((const uint8_t *)(p) + 5)) << 8) | \
+                    ((uint64_t)(*((const uint8_t *)(p) + 6)) << 0))) : \
+           ((int64_t)(INT64_T_CONSTANT(0xFFFFFFFFFF000000U) | \
+                    ((uint64_t)(*((const uint8_t *)(p) + 0)) << 48) | \
+                    ((uint64_t)(*((const uint8_t *)(p) + 1)) << 40) | \
+                    ((uint64_t)(*((const uint8_t *)(p) + 2)) << 32) | \
+                    ((uint64_t)(*((const uint8_t *)(p) + 3)) << 24) | \
+                    ((uint64_t)(*((const uint8_t *)(p) + 4)) << 16) | \
+                    ((uint64_t)(*((const uint8_t *)(p) + 5)) << 8) | \
+                    ((uint64_t)(*((const uint8_t *)(p) + 6)) << 0))))
+

 /*
  * Macros to extract possibly-unaligned little-endian integral values.
  * XXX - do loads on little-endian machines that support unaligned loads?
  */
 /*
  * Macros to extract possibly-unaligned little-endian integral values.
  * XXX - do loads on little-endian machines that support unaligned loads?
  */

-#define EXTRACT_LE_16BITS(p) \
+#define EXTRACT_LE_U_2(p) \

        ((uint16_t)(((uint16_t)(*((const uint8_t *)(p) + 1)) << 8) | \
                    ((uint16_t)(*((const uint8_t *)(p) + 0)) << 0)))
        ((uint16_t)(((uint16_t)(*((const uint8_t *)(p) + 1)) << 8) | \
                    ((uint16_t)(*((const uint8_t *)(p) + 0)) << 0)))

-#define EXTRACT_LE_32BITS(p) \
+#define EXTRACT_LE_S_2(p) \
+       ((int16_t)(((uint16_t)(*((const uint8_t *)(p) + 1)) << 8) | \
+                  ((uint16_t)(*((const uint8_t *)(p) + 0)) << 0)))
+#define EXTRACT_LE_U_4(p) \

        ((uint32_t)(((uint32_t)(*((const uint8_t *)(p) + 3)) << 24) | \
                    ((uint32_t)(*((const uint8_t *)(p) + 2)) << 16) | \
                    ((uint32_t)(*((const uint8_t *)(p) + 1)) << 8) | \
                    ((uint32_t)(*((const uint8_t *)(p) + 0)) << 0)))
        ((uint32_t)(((uint32_t)(*((const uint8_t *)(p) + 3)) << 24) | \
                    ((uint32_t)(*((const uint8_t *)(p) + 2)) << 16) | \
                    ((uint32_t)(*((const uint8_t *)(p) + 1)) << 8) | \
                    ((uint32_t)(*((const uint8_t *)(p) + 0)) << 0)))

-#define EXTRACT_LE_24BITS(p) \
+#define EXTRACT_LE_S_4(p) \
+       ((int32_t)(((uint32_t)(*((const uint8_t *)(p) + 3)) << 24) | \
+                  ((uint32_t)(*((const uint8_t *)(p) + 2)) << 16) | \
+                  ((uint32_t)(*((const uint8_t *)(p) + 1)) << 8) | \
+                  ((uint32_t)(*((const uint8_t *)(p) + 0)) << 0)))
+#define EXTRACT_LE_U_3(p) \

        ((uint32_t)(((uint32_t)(*((const uint8_t *)(p) + 2)) << 16) | \
                    ((uint32_t)(*((const uint8_t *)(p) + 1)) << 8) | \
                    ((uint32_t)(*((const uint8_t *)(p) + 0)) << 0)))
        ((uint32_t)(((uint32_t)(*((const uint8_t *)(p) + 2)) << 16) | \
                    ((uint32_t)(*((const uint8_t *)(p) + 1)) << 8) | \
                    ((uint32_t)(*((const uint8_t *)(p) + 0)) << 0)))

-#define EXTRACT_LE_64BITS(p) \
+#define EXTRACT_LE_S_3(p) \
+       ((int32_t)(((uint32_t)(*((const uint8_t *)(p) + 2)) << 16) | \
+                  ((uint32_t)(*((const uint8_t *)(p) + 1)) << 8) | \
+                  ((uint32_t)(*((const uint8_t *)(p) + 0)) << 0)))
+#define EXTRACT_LE_U_8(p) \

        ((uint64_t)(((uint64_t)(*((const uint8_t *)(p) + 7)) << 56) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 6)) << 48) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 5)) << 40) | \
        ((uint64_t)(((uint64_t)(*((const uint8_t *)(p) + 7)) << 56) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 6)) << 48) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 5)) << 40) | \


@@ -254,30 +499,42 @@ EXTRACT_64BITS(const void *p)
                    ((uint64_t)(*((const uint8_t *)(p) + 2)) << 16) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 1)) << 8) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 0)) << 0)))
                    ((uint64_t)(*((const uint8_t *)(p) + 2)) << 16) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 1)) << 8) | \
                    ((uint64_t)(*((const uint8_t *)(p) + 0)) << 0)))

+#define EXTRACT_LE_S_8(p) \
+       ((int64_t)(((uint64_t)(*((const uint8_t *)(p) + 7)) << 56) | \
+                  ((uint64_t)(*((const uint8_t *)(p) + 6)) << 48) | \
+                  ((uint64_t)(*((const uint8_t *)(p) + 5)) << 40) | \
+                  ((uint64_t)(*((const uint8_t *)(p) + 4)) << 32) | \
+                  ((uint64_t)(*((const uint8_t *)(p) + 3)) << 24) | \
+                  ((uint64_t)(*((const uint8_t *)(p) + 2)) << 16) | \
+                  ((uint64_t)(*((const uint8_t *)(p) + 1)) << 8) | \
+                  ((uint64_t)(*((const uint8_t *)(p) + 0)) << 0)))

 
 /*
  * Macros to check the presence of the values in question.
  */
 
 /*
  * Macros to check the presence of the values in question.
  */

-#define ND_TTEST_8BITS(p) ND_TTEST2(*(p), 1)
-#define ND_TCHECK_8BITS(p) ND_TCHECK2(*(p), 1)
+#define ND_TTEST_1(p) ND_TTEST_LEN((p), 1)
+#define ND_TCHECK_1(p) ND_TCHECK_LEN((p), 1)
+
+#define ND_TTEST_2(p) ND_TTEST_LEN((p), 2)
+#define ND_TCHECK_2(p) ND_TCHECK_LEN((p), 2)

 
 

-#define ND_TTEST_16BITS(p) ND_TTEST2(*(p), 2)
-#define ND_TCHECK_16BITS(p) ND_TCHECK2(*(p), 2)
+#define ND_TTEST_3(p) ND_TTEST_LEN((p), 3)
+#define ND_TCHECK_3(p) ND_TCHECK_LEN((p), 3)

 
 

-#define ND_TTEST_24BITS(p) ND_TTEST2(*(p), 3)
-#define ND_TCHECK_24BITS(p) ND_TCHECK2(*(p), 3)
+#define ND_TTEST_4(p) ND_TTEST_LEN((p), 4)
+#define ND_TCHECK_4(p) ND_TCHECK_LEN((p), 4)

 
 

-#define ND_TTEST_32BITS(p) ND_TTEST2(*(p), 4)
-#define ND_TCHECK_32BITS(p) ND_TCHECK2(*(p), 4)
+#define ND_TTEST_5(p) ND_TTEST_LEN((p), 5)
+#define ND_TCHECK_5(p) ND_TCHECK_LEN((p), 5)

 
 

-#define ND_TTEST_40BITS(p) ND_TTEST2(*(p), 5)
-#define ND_TCHECK_40BITS(p) ND_TCHECK2(*(p), 5)
+#define ND_TTEST_6(p) ND_TTEST_LEN((p), 6)
+#define ND_TCHECK_6(p) ND_TCHECK_LEN((p), 6)

 
 

-#define ND_TTEST_48BITS(p) ND_TTEST2(*(p), 6)
-#define ND_TCHECK_48BITS(p) ND_TCHECK2(*(p), 6)
+#define ND_TTEST_7(p) ND_TTEST_LEN((p), 7)
+#define ND_TCHECK_7(p) ND_TCHECK_LEN((p), 7)

 
 

-#define ND_TTEST_56BITS(p) ND_TTEST2(*(p), 7)
-#define ND_TCHECK_56BITS(p) ND_TCHECK2(*(p), 7)
+#define ND_TTEST_8(p) ND_TTEST_LEN((p), 8)
+#define ND_TCHECK_8(p) ND_TCHECK_LEN((p), 8)

 
 

-#define ND_TTEST_64BITS(p) ND_TTEST2(*(p), 8)
-#define ND_TCHECK_64BITS(p) ND_TCHECK2(*(p), 8)
+#define ND_TTEST_16(p) ND_TTEST_LEN((p), 16)
+#define ND_TCHECK_16(p) ND_TCHECK_LEN((p), 16)