From 354bb40e75d94466e91fe6960523612c9d17ccfb Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Thu, 2 Nov 2017 23:11:29 +0300
Subject: Add implementation

---
 mysql/extra/yassl/taocrypt/src/misc.cpp | 297 ++++++++++++++++++++++++++++++++
 1 file changed, 297 insertions(+)
 create mode 100644 mysql/extra/yassl/taocrypt/src/misc.cpp

(limited to 'mysql/extra/yassl/taocrypt/src/misc.cpp')

diff --git a/mysql/extra/yassl/taocrypt/src/misc.cpp b/mysql/extra/yassl/taocrypt/src/misc.cpp
new file mode 100644
index 0000000..b576d3d
--- /dev/null
+++ b/mysql/extra/yassl/taocrypt/src/misc.cpp
@@ -0,0 +1,297 @@
+/*
+   Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved.
+
+   This program 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; version 2 of the License.
+
+   This program 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; see the file COPYING. If not, write to the
+   Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+   MA  02110-1301  USA.
+*/
+
+/* based on Wei Dai's misc.cpp from CryptoPP */
+
+
+#include "runtime.hpp"
+#include "misc.hpp"
+
+
+#ifdef __GNUC__
+    #include <signal.h>
+    #include <setjmp.h>
+#endif
+
+#ifdef USE_SYS_STL
+    #include <algorithm>
+#else
+    #include "algorithm.hpp"
+#endif
+
+namespace STL = STL_NAMESPACE;
+
+
+#ifdef YASSL_PURE_C
+
+    void* operator new(size_t sz, TaoCrypt::new_t)
+    {
+        void* ptr = malloc(sz ? sz : 1);
+        if (!ptr) abort();
+
+        return ptr;
+    }
+
+
+    void operator delete(void* ptr, TaoCrypt::new_t)
+    {
+        if (ptr) free(ptr);
+    }
+
+
+    void* operator new[](size_t sz, TaoCrypt::new_t nt)
+    {
+        return ::operator new(sz, nt);
+    }
+
+
+    void operator delete[](void* ptr, TaoCrypt::new_t nt)
+    {
+        ::operator delete(ptr, nt);
+    }
+
+
+    /* uncomment to test
+    // make sure not using globals anywhere by forgetting to use overloaded
+    void* operator new(size_t sz);
+
+    void operator delete(void* ptr);
+
+    void* operator new[](size_t sz);
+
+    void operator delete[](void* ptr);
+    */
+
+
+    namespace TaoCrypt {
+
+        new_t tc;   // for library new
+
+    }
+
+#ifdef __sun
+
+// Handler for pure virtual functions
+namespace __Crun {
+    void pure_error() {
+    }
+}
+
+#endif
+
+#if defined(__ICC) || defined(__INTEL_COMPILER) || (__GNUC__ > 2)
+
+extern "C" {
+
+    int __cxa_pure_virtual() {
+      return 0;
+    }
+
+}  // extern "C"
+
+#endif
+
+#endif // YASSL_PURE_C
+
+
+namespace TaoCrypt {
+
+
+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(word value)
+{
+    unsigned int i;
+    for (i=sizeof(value); i; --i)
+        if (value >> (i-1)*8)
+            break;
+
+    return i;
+}
+
+
+unsigned int BitPrecision(word 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;
+}
+
+
+word Crop(word value, unsigned int size)
+{
+    if (size < 8*sizeof(value))
+        return (value & ((1L << size) - 1));
+    else
+        return value;
+}
+
+
+
+#ifdef TAOCRYPT_X86ASM_AVAILABLE
+
+
+bool HaveCpuId()
+{
+#ifdef _MSC_VER
+    __try
+    {
+        __asm
+        {
+            mov eax, 0
+            cpuid
+        }            
+    }
+    __except (1)
+    {
+        return false;
+    }
+    return true;
+#else
+    word32 eax, ebx;
+    __asm__ __volatile
+    (
+        /* Put EFLAGS in eax and ebx */
+        "pushf;"
+        "pushf;"
+        "pop %0;"
+        "movl %0,%1;"
+
+        /* Flip the cpuid bit and store back in EFLAGS */
+        "xorl $0x200000,%0;"
+        "push %0;"
+        "popf;"
+
+        /* Read EFLAGS again */
+        "pushf;"
+        "pop %0;"
+        "popf"
+        : "=r" (eax), "=r" (ebx)
+        :
+        : "cc"
+    );
+
+    if (eax == ebx)
+        return false;
+    return true;
+#endif
+}
+
+
+void CpuId(word32 input, word32 *output)
+{
+#ifdef __GNUC__
+    __asm__
+    (
+        // save ebx in case -fPIC is being used
+        "push %%ebx; cpuid; mov %%ebx, %%edi; pop %%ebx"
+        : "=a" (output[0]), "=D" (output[1]), "=c" (output[2]), "=d"(output[3])
+        : "a" (input)
+    );
+#else
+    __asm
+    {
+        mov eax, input
+        cpuid
+        mov edi, output
+        mov [edi], eax
+        mov [edi+4], ebx
+        mov [edi+8], ecx
+        mov [edi+12], edx
+    }
+#endif
+}
+
+
+bool IsPentium()
+{
+    if (!HaveCpuId())
+        return false;
+
+    word32 cpuid[4];
+
+    CpuId(0, cpuid);
+    STL::swap(cpuid[2], cpuid[3]);
+    if (memcmp(cpuid+1, "GenuineIntel", 12) != 0)
+        return false;
+
+    CpuId(1, cpuid);
+    byte family = ((cpuid[0] >> 8) & 0xf);
+    if (family < 5)
+        return false;
+
+    return true;
+}
+
+
+
+static bool IsMmx()
+{
+    if (!IsPentium())
+        return false;
+
+    word32 cpuid[4];
+
+    CpuId(1, cpuid);
+    if ((cpuid[3] & (1 << 23)) == 0)
+        return false;
+
+    return true;
+}
+
+
+bool isMMX = IsMmx();
+
+
+#endif // TAOCRYPT_X86ASM_AVAILABLE
+
+
+
+
+}  // namespace
+
-- 
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