what you give them. Help stamp out software-hoarding!
-------------------------------------------------------------------------*/
#include "string.h"
-#define NULL (void *)0
+#include <sdcc-lib.h>
-void _generic * memcpy (
- void _generic * dst,
- void _generic * src,
- int count
+#if !_SDCC_PORT_PROVIDES_MEMCPY
+
+#undef memcpy /* Avoid conflict with builtin memcpy() in Z80 port */
+
+void * memcpy (
+ void * dst,
+ void * src,
+ size_t acount
)
{
- void _generic * ret = dst;
- char _generic * d = dst;
- char _generic * s = src;
+#if _SDCC_Z80_STYLE_LIB_OPT
+
+#pragma noinduction
+
+ char * d = dst;
+ char * s = src;
+ /* PENDING: Divide first to get around sign problems */
+ int count = -(acount >> 2);
+
+ while (count) {
+ *d++ = *s++;
+ *d++ = *s++;
+ *d++ = *s++;
+ *d++ = *s++;
+ count++;
+ }
+
+ if (acount & 2) {
+ *d++ = *s++;
+ *d++ = *s++;
+ }
+ if (acount & 1) {
+ *d++ = *s++;
+ }
+ return dst;
+#else
+ void * ret = dst;
+ char * d = dst;
+ char * s = src;
/*
* copy from lower addresses to higher addresses
*/
- while (count--) {
+ while (acount--) {
*d++ = *s++;
}
return(ret);
+#endif
}
+#endif