Changeset a2ae4f4 in mainline for libc/generic/string.c

Timestamp:

2006-06-01T14:22:33Z (19 years ago)

Author:

Ondrej Palkovsky <ondrap@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

88c3151

Parents:

cf28036

Message:

Big framebuffer changes, currently not integrated with console.

File:

• libc/generic/string.c (modified) (1 diff)

libc/generic/string.c

@@ -43 +43 @@
 }
 
-void * memcpy(void *dest, void *src, size_t n)
-{
-        char *os = src;
-        char *odst = dest;
-        while (n--)
-                *(odst++) = *(os++);
-        return dest;
-}
+void * memcpy(void *dst, const void *src, size_t n)
+{
+        int i, j;
+
+        for (i = 0; i < n/sizeof(unsigned long); i++)
+                ((unsigned long *) dst)[i] = ((unsigned long *) src)[i];
+                
+        for (j = 0; j < n%sizeof(unsigned long); j++)
+                ((unsigned char *)(((unsigned long *) dst) + i))[j] = ((unsigned char *)(((unsigned long *) src) + i))[j];
+                
+        return (char *)src;
+}
+
+void * memmove(void *dst, const void *src, size_t n)
+{
+        int i, j;
+        
+        if (src > dst)
+                return memcpy(dst, src, n);
+
+        for (j = (n%sizeof(unsigned long))-1; j >= 0; j--)
+                ((unsigned char *)(((unsigned long *) dst) + i))[j] = ((unsigned char *)(((unsigned long *) src) + i))[j];
+
+        for (i = n/sizeof(unsigned long)-1; i >=0 ; i--)
+                ((unsigned long *) dst)[i] = ((unsigned long *) src)[i];
+                
+        return (char *)src;
+}
+
 
 /** Count the number of characters in the string, not including terminating 0.