_wmemcopy.c

/*
# _____     ___ ____     ___ ____
#  ____|   |    ____|   |        | |____|
# |     ___|   |____ ___|    ____| |    \    PS2DEV Open Source Project.
#-----------------------------------------------------------------------
# Copyright 2001-2004, ps2dev - http://www.ps2dev.org
# Licenced under Academic Free License version 2.0
# Review ps2sdk README & LICENSE files for further details.
*/
 
#define SYSCLIB_DISABLE_BUILTINS
#include <sysclib.h>
 
// non-standard function (not to be confused with the wchar_t related function)
void *_wmemcopy(u32 *dest, const u32 *src, size_t size)
{
    void *result;
    s32 v4;
    s32 v5;
    u32 v6;
    u32 v7;
    u32 v8;
    u32 v9;
 
    result = dest;
    v4 = (u32)size >> 2;
    if (v4 > 0)
    {
        v5 = 0;
        if ((v4 & 3) == 0)
        {
            goto LABEL_8;
        }
        do
        {
            v6 = *src++;
            *dest++ = v6;
            v5 += 1;
        }
        while ((v4 & 3) != v5);
        if (v5 != v4)
        {
LABEL_8:
            do
            {
                v7 = src[1];
                v8 = src[2];
                v9 = src[3];
                *dest = *src;
                dest[1] = v7;
                dest[2] = v8;
                dest[3] = v9;
                v5 += 4;
                src += 4;
                dest += 4;
            }
            while (v5 != v4);
        }
    }
    return result;
}