Initial import

1 files changed, 154 insertions, 0 deletions

diff --git a/lzo/src/lzo_ptr.h b/lzo/src/lzo_ptr.h
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+/* lzo_ptr.h -- low-level pointer constructs
+
+   This file is part of the LZO real-time data compression library.
+
+   Copyright (C) 2008 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 2007 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 2006 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 2005 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 2004 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 2003 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 2002 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 2001 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 2000 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 1999 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 1998 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 1997 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 1996 Markus Franz Xaver Johannes Oberhumer
+   All Rights Reserved.
+
+   The LZO 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 LZO 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 LZO library; see the file COPYING.
+   If not, write to the Free Software Foundation, Inc.,
+   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+   Markus F.X.J. Oberhumer
+   <markus@oberhumer.com>
+   http://www.oberhumer.com/opensource/lzo/
+ */
+
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the library and is subject
+   to change.
+ */
+
+
+#ifndef __LZO_PTR_H
+#define __LZO_PTR_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/***********************************************************************
+// Integral types
+************************************************************************/
+
+#if !defined(lzo_uintptr_t)
+#  if defined(__LZO_MMODEL_HUGE)
+#    define lzo_uintptr_t   unsigned long
+#  else
+#    define lzo_uintptr_t   acc_uintptr_t
+#    ifdef __ACC_INTPTR_T_IS_POINTER
+#      define __LZO_UINTPTR_T_IS_POINTER 1
+#    endif
+#  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 (LZO_ARCH_I086)
+#define PTR(a)              ((lzo_bytep) (a))
+/* only need the low bits of the pointer -> offset is ok */
+#define PTR_ALIGNED_4(a)    ((ACC_PTR_FP_OFF(a) & 3) == 0)
+#define PTR_ALIGNED2_4(a,b) (((ACC_PTR_FP_OFF(a) | ACC_PTR_FP_OFF(b)) & 3) == 0)
+#elif (LZO_MM_PVP)
+#define PTR(a)              ((lzo_bytep) (a))
+#define PTR_ALIGNED_8(a)    ((((lzo_uintptr_t)(a)) >> 61) == 0)
+#define PTR_ALIGNED2_8(a,b) ((((lzo_uintptr_t)(a)|(lzo_uintptr_t)(b)) >> 61) == 0)
+#else
+#define PTR(a)              ((lzo_uintptr_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)       (PTR(a) - PTR(b))
+#define pd(a,b)             ((lzo_uint) ((a)-(b)))
+
+
+LZO_EXTERN(lzo_uintptr_t)
+__lzo_ptr_linear(const lzo_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;
+    lzo_int         a_lzo_int;
+    lzo_uint        a_lzo_uint;
+    lzo_int32       a_lzo_int32;
+    lzo_uint32      a_lzo_uint32;
+    ptrdiff_t       a_ptrdiff_t;
+    lzo_uintptr_t   a_lzo_uintptr_t;
+    lzo_voidp       a_lzo_voidp;
+    void *          a_void_p;
+    lzo_bytep       a_lzo_bytep;
+    lzo_bytepp      a_lzo_bytepp;
+    lzo_uintp       a_lzo_uintp;
+    lzo_uint *      a_lzo_uint_p;
+    lzo_uint32p     a_lzo_uint32p;
+    lzo_uint32 *    a_lzo_uint32_p;
+    unsigned char * a_uchar_p;
+    char *          a_char_p;
+}
+lzo_full_align_t;
+
+
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* already included */
+
+/*
+vi:ts=4:et
+*/
+