00001 #ifndef __STRINGEXPAND_H_
00002 #define __STRINGEXPAND_H_
00003
00004 #include <nlibc.h>
00005 #include <alloca.h>
00006 #include <string/strlen.h>
00007
00012 #if !defined(__cflow_processed) || defined(_uses_stringexpand_stringexpand_h)
00013 inline char * stringexpand( const char *str, int len ) {
00014 int *estr = (int *)alloca((len+1)*16 );
00015 unsigned *p = (unsigned *) str;
00016 int mshift = -8;
00017 int a, c=0, c2=8;
00018
00019 if( ! (a=*p) ) return 0;
00020 do {
00021 unsigned mask = 0xff;
00022 unsigned vshift = 0;
00023 do {
00024 int hi,lo;
00025 unsigned u = (a & mask);
00026 u = u>>vshift;
00027 asm("\tlutcross.L %0 %1\n\tatr.H %0 $ZERO" : "=r" (hi) : "r" (u));
00028 asm("\tlutmove.L %0 %1\n\tatr.H %0 $ZERO" : "=r" (lo) : "r" (u));
00029 estr[c++] = lo;
00030 where( c2 <= len ) {
00031 estr[c2++] = hi;
00032 }
00033 mask >>= mshift;
00034 vshift += 8;
00035 } while( mask );
00036 c += 8;
00037 c2 += 8;
00038 a = *(++p);
00039 } while( a );
00040 return (char *)estr;
00041 }
00042 #endif
00043
00044 #endif // __STRINGEXPAND_H_
