libc.obj:

- Formatted by clang-format (WebKit-style).
- Removed unnecessary errno linux. 
- Added KOS error codes. 
- String functions have been replaced with more optimal ones for x86. 
- Changed wrappers for 70 sysfunction.

git-svn-id: svn://kolibrios.org@9765 a494cfbc-eb01-0410-851d-a64ba20cac60

programs/develop/ktcc/trunk/libc.obj/source/string/strncmp.c

@@ -1,26 +1,24 @@
-/* strncmp( const char *, const char *, size_t )
-
-   This file is part of the Public Domain C Library (PDCLib).
-   Permission is granted to use, modify, and / or redistribute at will.
-*/
-
-#include <string.h>
-
-int strncmp( const char * s1, const char * s2, size_t n )
-{
-    while ( n && *s1 && ( *s1 == *s2 ) )
-    {
-        ++s1;
-        ++s2;
-        --n;
-    }
-
-    if ( n == 0 )
-    {
-        return 0;
-    }
-    else
-    {
-        return ( *( unsigned char * )s1 - * ( unsigned char * )s2 );
-    }
-}
+/* Copyright (C) 1994 DJ Delorie, see COPYING.DJ for details */
+#include <string.h>
+
+int strncmp(const char* s1, const char* s2, size_t n)
+{
+    register int __res;
+    int d0, d1, d2;
+    __asm__ __volatile__(
+        "1:\tdecl %3\n\t"
+        "js 2f\n\t"
+        "lodsb\n\t"
+        "scasb\n\t"
+        "jne 3f\n\t"
+        "testb %%al,%%al\n\t"
+        "jne 1b\n"
+        "2:\txorl %%eax,%%eax\n\t"
+        "jmp 4f\n"
+        "3:\tsbbl %%eax,%%eax\n\t"
+        "orb $1,%%al\n"
+        "4:"
+        : "=a"(__res), "=&S"(d0), "=&D"(d1), "=&c"(d2)
+        : "1"(s1), "2"(s2), "3"(n));
+    return __res;
+}