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/strcat.c

@@ -1,27 +1,18 @@
-/* strcat( char *, const char * )
-
-   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>
-
-char * strcat( char * s1, const char * s2 )
-{
-    char * rc = s1;
-
-    if ( *s1 )
-    {
-        while ( *++s1 )
-        {
-            /* EMPTY */
-        }
-    }
-
-    while ( ( *s1++ = *s2++ ) )
-    {
-        /* EMPTY */
-    }
-
-    return rc;
+#include <string.h>
+
+char* strcat(char* s, const char* append)
+{
+    int d0, d1, d2, d3;
+    __asm__ __volatile__(
+        "repne\n\t"
+        "scasb\n\t"
+        "decl %1\n"
+        "1:\tlodsb\n\t"
+        "stosb\n\t"
+        "testb %%al,%%al\n\t"
+        "jne 1b"
+        : "=&S"(d0), "=&D"(d1), "=&a"(d2), "=&c"(d3)
+        : "0"(append), "1"(s), "2"(0), "3"(0xffffffff)
+        : "memory");
+    return s;
 }