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+/* lzo_init.c -- initialization of the LZO library
+
+ This file is part of the LZO real-time data compression library.
+
+ Copyright (C) 2011 Markus Franz Xaver Johannes Oberhumer
+ Copyright (C) 2010 Markus Franz Xaver Johannes Oberhumer
+ Copyright (C) 2009 Markus Franz Xaver Johannes Oberhumer
+ 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/
+ */
+
+
+#include "lzo_conf.h"
+
+
+/***********************************************************************
+// Runtime check of the assumptions about the size of builtin types,
+// memory model, byte order and other low-level constructs.
+//
+// We are really paranoid here - LZO should either fail
+// at startup or not at all.
+//
+// Because of inlining much of these functions evaluates to nothing.
+//
+// And while many of the tests seem highly obvious and redundant they are
+// here to catch compiler/optimizer bugs. Yes, these do exist.
+************************************************************************/
+
+#if !defined(__LZO_IN_MINILZO)
+
+#define ACC_WANT_ACC_CHK_CH 1
+#undef ACCCHK_ASSERT
+#include "miniacc.h"
+
+ ACCCHK_ASSERT_IS_SIGNED_T(lzo_int)
+ ACCCHK_ASSERT_IS_UNSIGNED_T(lzo_uint)
+
+ ACCCHK_ASSERT_IS_SIGNED_T(lzo_int32)
+ ACCCHK_ASSERT_IS_UNSIGNED_T(lzo_uint32)
+ ACCCHK_ASSERT((LZO_UINT32_C(1) << (int)(8*sizeof(LZO_UINT32_C(1))-1)) > 0)
+ ACCCHK_ASSERT(sizeof(lzo_uint32) >= 4)
+#if defined(LZO_UINT64_MAX)
+ ACCCHK_ASSERT(sizeof(lzo_uint64) == 8)
+ ACCCHK_ASSERT_IS_SIGNED_T(lzo_int64)
+ ACCCHK_ASSERT_IS_UNSIGNED_T(lzo_uint64)
+#endif
+
+#if !defined(__LZO_UINTPTR_T_IS_POINTER)
+ ACCCHK_ASSERT_IS_UNSIGNED_T(lzo_uintptr_t)
+#endif
+ ACCCHK_ASSERT(sizeof(lzo_uintptr_t) >= sizeof(lzo_voidp))
+
+ ACCCHK_ASSERT_IS_UNSIGNED_T(lzo_xint)
+ ACCCHK_ASSERT(sizeof(lzo_xint) >= sizeof(lzo_uint32))
+ ACCCHK_ASSERT(sizeof(lzo_xint) >= sizeof(lzo_uint))
+ ACCCHK_ASSERT(sizeof(lzo_xint) == sizeof(lzo_uint32) || sizeof(lzo_xint) == sizeof(lzo_uint))
+
+#endif
+#undef ACCCHK_ASSERT
+
+
+/***********************************************************************
+//
+************************************************************************/
+
+#define WANT_lzo_bitops_clz32 1
+#define WANT_lzo_bitops_clz64 1
+#define WANT_lzo_bitops_ctz32 1
+#define WANT_lzo_bitops_ctz64 1
+#include "lzo_func.ch"
+
+#if 0
+#define u2p(ptr,off) ((lzo_voidp) (((lzo_bytep)(lzo_voidp)(ptr)) + (off)))
+#else
+static __lzo_noinline lzo_voidp u2p(lzo_voidp ptr, lzo_uint off)
+{
+ return (lzo_voidp) ((lzo_bytep) ptr + off);
+}
+#endif
+
+LZO_PUBLIC(int)
+_lzo_config_check(void)
+{
+ lzo_bool r = 1;
+ union {
+ lzo_xint a[2]; unsigned char b[2*LZO_MAX(8,sizeof(lzo_xint))];
+#if defined(LZO_UNALIGNED_OK_8)
+ lzo_uint64 c[2];
+#endif
+ unsigned short x[2]; lzo_uint32 y[2]; lzo_uint z[2];
+ } u;
+ lzo_voidp p;
+
+ u.a[0] = u.a[1] = 0;
+ p = u2p(&u, 0);
+ r &= ((* (lzo_bytep) p) == 0);
+#if !defined(LZO_CFG_NO_CONFIG_CHECK)
+#if defined(LZO_ABI_BIG_ENDIAN)
+ u.a[0] = u.a[1] = 0; u.b[sizeof(lzo_uint) - 1] = 128;
+ p = u2p(&u, 0);
+ r &= ((* (lzo_uintp) p) == 128);
+#endif
+#if defined(LZO_ABI_LITTLE_ENDIAN)
+ u.a[0] = u.a[1] = 0; u.b[0] = 128;
+ p = u2p(&u, 0);
+ r &= ((* (lzo_uintp) p) == 128);
+#endif
+#if defined(LZO_UNALIGNED_OK_2)
+ u.a[0] = u.a[1] = 0;
+ u.b[0] = 1; u.b[sizeof(unsigned short) + 1] = 2;
+ p = u2p(&u, 1);
+ r &= ((* (lzo_ushortp) p) == 0);
+#endif
+#if defined(LZO_UNALIGNED_OK_4)
+ u.a[0] = u.a[1] = 0;
+ u.b[0] = 3; u.b[sizeof(lzo_uint32) + 1] = 4;
+ p = u2p(&u, 1);
+ r &= ((* (lzo_uint32p) p) == 0);
+#endif
+#if defined(LZO_UNALIGNED_OK_8)
+ u.c[0] = u.c[1] = 0;
+ u.b[0] = 5; u.b[sizeof(lzo_uint64) + 1] = 6;
+ p = u2p(&u, 1);
+ r &= ((* (lzo_uint64p) p) == 0);
+#endif
+#if defined(lzo_bitops_clz32)
+ { unsigned i; lzo_uint32 v = 1;
+ for (i = 0; i < 32; i++, v <<= 1)
+ r &= lzo_bitops_clz32(v) == 31 - i;
+ }
+#endif
+#if defined(lzo_bitops_clz64)
+ { unsigned i; lzo_uint64 v = 1;
+ for (i = 0; i < 64; i++, v <<= 1)
+ r &= lzo_bitops_clz64(v) == 63 - i;
+ }
+#endif
+#if defined(lzo_bitops_ctz32)
+ { unsigned i; lzo_uint32 v = 1;
+ for (i = 0; i < 32; i++, v <<= 1)
+ r &= lzo_bitops_ctz32(v) == i;
+ }
+#endif
+#if defined(lzo_bitops_ctz64)
+ { unsigned i; lzo_uint64 v = 1;
+ for (i = 0; i < 64; i++, v <<= 1)
+ r &= lzo_bitops_ctz64(v) == i;
+ }
+#endif
+#endif
+
+ return r == 1 ? LZO_E_OK : LZO_E_ERROR;
+}
+
+
+/***********************************************************************
+//
+************************************************************************/
+
+LZO_PUBLIC(int)
+__lzo_init_v2(unsigned v, int s1, int s2, int s3, int s4, int s5,
+ int s6, int s7, int s8, int s9)
+{
+ int r;
+
+#if defined(__LZO_IN_MINILZO)
+#elif (LZO_CC_MSC && ((_MSC_VER) < 700))
+#else
+#define ACC_WANT_ACC_CHK_CH 1
+#undef ACCCHK_ASSERT
+#define ACCCHK_ASSERT(expr) LZO_COMPILE_TIME_ASSERT(expr)
+#include "miniacc.h"
+#endif
+#undef ACCCHK_ASSERT
+
+ if (v == 0)
+ return LZO_E_ERROR;
+
+ r = (s1 == -1 || s1 == (int) sizeof(short)) &&
+ (s2 == -1 || s2 == (int) sizeof(int)) &&
+ (s3 == -1 || s3 == (int) sizeof(long)) &&
+ (s4 == -1 || s4 == (int) sizeof(lzo_uint32)) &&
+ (s5 == -1 || s5 == (int) sizeof(lzo_uint)) &&
+ (s6 == -1 || s6 == (int) lzo_sizeof_dict_t) &&
+ (s7 == -1 || s7 == (int) sizeof(char *)) &&
+ (s8 == -1 || s8 == (int) sizeof(lzo_voidp)) &&
+ (s9 == -1 || s9 == (int) sizeof(lzo_callback_t));
+ if (!r)
+ return LZO_E_ERROR;
+
+ r = _lzo_config_check();
+ if (r != LZO_E_OK)
+ return r;
+
+ return r;
+}
+
+
+#if !defined(__LZO_IN_MINILZO)
+#include "lzo_dll.ch"
+#endif
+
+
+/*
+vi:ts=4:et
+*/
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