1 files changed, 211 insertions, 0 deletions

diff --git a/tools/ucl/src/ucl_ptr.h b/tools/ucl/src/ucl_ptr.h
new file mode 100644
index 0000000000..86221b9ac1
--- /dev/null
+++ b/tools/ucl/src/ucl_ptr.h
@@ -0,0 +1,211 @@
+/* ucl_ptr.h -- low-level pointer constructs
+
+   This file is part of the UCL data compression library.
+
+   Copyright (C) 1996-2002 Markus Franz Xaver Johannes Oberhumer
+   All Rights Reserved.
+
+   The UCL library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2 of
+   the License, or (at your option) any later version.
+
+   The UCL library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with the UCL library; see the file COPYING.
+   If not, write to the Free Software Foundation, Inc.,
+   59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+   Markus F.X.J. Oberhumer
+   <markus@oberhumer.com>
+ */
+
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the library and is subject
+   to change.
+ */
+
+
+#ifndef __UCL_PTR_H
+#define __UCL_PTR_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* This is the lowest part of the UCL library.
+ * It deals with pointer representations at bit level.
+ */
+
+
+/***********************************************************************
+// Includes
+************************************************************************/
+
+#if defined(__UCL_DOS16) || defined(__UCL_WIN16)
+#  include <dos.h>
+#  if 1 && defined(__WATCOMC__)
+#    include <i86.h>
+     __UCL_EXTERN_C unsigned char _HShift;
+#    define __UCL_HShift    _HShift
+#  elif 1 && defined(_MSC_VER)
+     __UCL_EXTERN_C unsigned short __near _AHSHIFT;
+#    define __UCL_HShift    ((unsigned) &_AHSHIFT)
+#  elif defined(__UCL_WIN16)
+#    define __UCL_HShift    3
+#  else
+#    define __UCL_HShift    12
+#  endif
+#  if !defined(_FP_SEG) && defined(FP_SEG)
+#    define _FP_SEG         FP_SEG
+#  endif
+#  if !defined(_FP_OFF) && defined(FP_OFF)
+#    define _FP_OFF         FP_OFF
+#  endif
+#endif
+
+
+/***********************************************************************
+// Integral types
+************************************************************************/
+
+/* ptrdiff_t */
+#if !defined(ucl_ptrdiff_t)
+  #if (UINT_MAX >= UCL_0xffffffffL)
+     typedef ptrdiff_t          ucl_ptrdiff_t;
+  #else
+     typedef long               ucl_ptrdiff_t;
+  #endif
+#endif
+
+
+/* Unsigned type that has *exactly* the same number of bits as a ucl_voidp */
+#if !defined(__UCL_HAVE_PTR_T)
+#  if defined(ucl_ptr_t)
+#    define __UCL_HAVE_PTR_T
+#  endif
+#endif
+#if !defined(__UCL_HAVE_PTR_T)
+#  if defined(SIZEOF_CHAR_P) && defined(SIZEOF_UNSIGNED_LONG)
+#    if (SIZEOF_CHAR_P == SIZEOF_UNSIGNED_LONG)
+       typedef unsigned long    ucl_ptr_t;
+       typedef long             ucl_sptr_t;
+#      define __UCL_HAVE_PTR_T
+#    endif
+#  endif
+#endif
+#if !defined(__UCL_HAVE_PTR_T)
+#  if defined(SIZEOF_CHAR_P) && defined(SIZEOF_UNSIGNED)
+#    if (SIZEOF_CHAR_P == SIZEOF_UNSIGNED)
+       typedef unsigned int     ucl_ptr_t;
+       typedef int              ucl_sptr_t;
+#      define __UCL_HAVE_PTR_T
+#    endif
+#  endif
+#endif
+#if !defined(__UCL_HAVE_PTR_T)
+#  if defined(SIZEOF_CHAR_P) && defined(SIZEOF_UNSIGNED_SHORT)
+#    if (SIZEOF_CHAR_P == SIZEOF_UNSIGNED_SHORT)
+       typedef unsigned short   ucl_ptr_t;
+       typedef short            ucl_sptr_t;
+#      define __UCL_HAVE_PTR_T
+#    endif
+#  endif
+#endif
+#if !defined(__UCL_HAVE_PTR_T)
+#  if defined(UCL_HAVE_CONFIG_H) || defined(SIZEOF_CHAR_P)
+#    error "no suitable type for ucl_ptr_t"
+#  else
+     typedef unsigned long      ucl_ptr_t;
+     typedef long               ucl_sptr_t;
+#    define __UCL_HAVE_PTR_T
+#  endif
+#endif
+
+
+/***********************************************************************
+//
+************************************************************************/
+
+/* Always use the safe (=integral) version for pointer-comparisions.
+ * The compiler should optimize away the additional casts anyway.
+ *
+ * Note that this only works if the representation and ordering
+ * of the pointer and the integral is the same (at bit level).
+ *
+ * Most 16-bit compilers have their own view about pointers -
+ * fortunately they don't care about comparing pointers
+ * that are pointing to Nirvana.
+ */
+
+#if defined(__UCL_DOS16) || defined(__UCL_WIN16)
+#define PTR(a)              ((ucl_bytep) (a))
+/* only need the low bits of the pointer -> offset is ok */
+#define PTR_ALIGNED_4(a)    ((_FP_OFF(a) & 3) == 0)
+#define PTR_ALIGNED2_4(a,b) (((_FP_OFF(a) | _FP_OFF(b)) & 3) == 0)
+#else
+#define PTR(a)              ((ucl_ptr_t) (a))
+#define PTR_LINEAR(a)       PTR(a)
+#define PTR_ALIGNED_4(a)    ((PTR_LINEAR(a) & 3) == 0)
+#define PTR_ALIGNED_8(a)    ((PTR_LINEAR(a) & 7) == 0)
+#define PTR_ALIGNED2_4(a,b) (((PTR_LINEAR(a) | PTR_LINEAR(b)) & 3) == 0)
+#define PTR_ALIGNED2_8(a,b) (((PTR_LINEAR(a) | PTR_LINEAR(b)) & 7) == 0)
+#endif
+
+#define PTR_LT(a,b)         (PTR(a) < PTR(b))
+#define PTR_GE(a,b)         (PTR(a) >= PTR(b))
+#define PTR_DIFF(a,b)       ((ucl_ptrdiff_t) (PTR(a) - PTR(b)))
+
+
+UCL_EXTERN(ucl_ptr_t)
+__ucl_ptr_linear(const ucl_voidp ptr);
+
+
+typedef union
+{
+    char            a_char;
+    unsigned char   a_uchar;
+    short           a_short;
+    unsigned short  a_ushort;
+    int             a_int;
+    unsigned int    a_uint;
+    long            a_long;
+    unsigned long   a_ulong;
+    ucl_int         a_ucl_int;
+    ucl_uint        a_ucl_uint;
+    ucl_int32       a_ucl_int32;
+    ucl_uint32      a_ucl_uint32;
+    ptrdiff_t       a_ptrdiff_t;
+    ucl_ptrdiff_t   a_ucl_ptrdiff_t;
+    ucl_ptr_t       a_ucl_ptr_t;
+    ucl_voidp       a_ucl_voidp;
+    void *          a_void_p;
+    ucl_bytep       a_ucl_bytep;
+    ucl_bytepp      a_ucl_bytepp;
+    ucl_uintp       a_ucl_uintp;
+    ucl_uint *      a_ucl_uint_p;
+    ucl_uint32p     a_ucl_uint32p;
+    ucl_uint32 *    a_ucl_uint32_p;
+    unsigned char * a_uchar_p;
+    char *          a_char_p;
+}
+ucl_align_t;
+
+
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* already included */
+
+/*
+vi:ts=4:et
+*/
+