added a memcpy function (clang needs it to copy structs in assignments)

2 files changed, 17 insertions, 0 deletions

diff --git a/src/libc/string.c b/src/libc/string.c
index 8d4f876..904f33c 100644
--- a/src/libc/string.c
+++ b/src/libc/string.c
@@ -33,6 +33,21 @@ void *memmove( void *d, const void *s, size_t n )
 	return d;
 }
 
+void *memcpy( void *d, const void *s, size_t n )
+{
+	const char *ss = (const char *)s;
+	char *dd = (char *)d;
+	
+	if( dd == ss ) return d;
+	
+	while( n > 0 ) {
+		*dd++ = *ss++;
+		n--;
+	}
+	
+	return d;
+}
+
 size_t strlen( const char *s )
 {
 	size_t len;
diff --git a/src/libc/string.h b/src/libc/string.h
index 476c8c0..fc29ae9 100644
--- a/src/libc/string.h
+++ b/src/libc/string.h
@@ -5,6 +5,8 @@
 
 void *memset( void *s, int c, size_t n );
 void *memmove( void *d, const void *s, size_t n );
+void *memcpy( void *d, const void *s, size_t n );
+
 size_t strlen( const char *s );
 int strcmp( const char *s1, const char *s2 );
 size_t strlcpy( char *d, const char *s, size_t n );