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/* misc.cpp
*
* Copyright (C) 2003 Sawtooth Consulting Ltd.
*
* This file is part of yaSSL.
*
* yaSSL 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.
*
* yaSSL 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
/* based on Wei Dai's misc.cpp from CryptoPP */
#include "runtime.hpp"
#include "misc.hpp"
#include <new> // for NewHandler
void* operator new(size_t sz, TaoCrypt::new_t)
{
void* ptr = ::operator new(sz);
if (!ptr) abort();
return ptr;
}
void* operator new[](size_t sz, TaoCrypt::new_t tc)
{
#if defined(_MSC_VER) && (_MSC_VER < 1300)
void* ptr = ::operator new(sz); // no ::operator new[]
#else
void* ptr = ::operator new[](sz);
#endif
if (!ptr) abort();
return ptr;
}
namespace TaoCrypt {
new_t tc; // for library new
inline void XorWords(word* r, const word* a, unsigned int n)
{
for (unsigned int i=0; i<n; i++)
r[i] ^= a[i];
}
void xorbuf(byte* buf, const byte* mask, unsigned int count)
{
if (((size_t)buf | (size_t)mask | count) % WORD_SIZE == 0)
XorWords((word *)buf, (const word *)mask, count/WORD_SIZE);
else
{
for (unsigned int i=0; i<count; i++)
buf[i] ^= mask[i];
}
}
unsigned int BytePrecision(unsigned long value)
{
unsigned int i;
for (i=sizeof(value); i; --i)
if (value >> (i-1)*8)
break;
return i;
}
unsigned int BitPrecision(unsigned long value)
{
if (!value)
return 0;
unsigned int l = 0,
h = 8 * sizeof(value);
while (h-l > 1)
{
unsigned int t = (l+h)/2;
if (value >> t)
l = t;
else
h = t;
}
return h;
}
unsigned long Crop(unsigned long value, unsigned int size)
{
if (size < 8*sizeof(value))
return (value & ((1L << size) - 1));
else
return value;
}
#if !(defined(_MSC_VER) && (_MSC_VER < 1300))
using std::new_handler;
using std::set_new_handler;
#endif
void CallNewHandler()
{
abort();
}
} // namespace
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