diff --git a/bionic.c b/bionic.c
index 3278d5e..e42092a 100644
--- a/bionic.c
+++ b/bionic.c
@@ -703,3 +703,23 @@ int _strnlen(const char *s, uint32_t maxlen)
 	while(s[i++] && i < maxlen);
 	return i;
 }
+
+void _usleep(uint32_t usecs)
+{
+	uint32_t i, j;
+	for (i = 0; i < usecs; i++) {
+		for (j = 0; j < 73; j++) {
+			asm("nop");
+		}
+	}
+}
+
+void _msleep(uint32_t msecs)
+{
+	uint32_t i, j;
+	for (i = 0; i < msecs; i++) {
+		for (j = 0; j < 73000; j++) {
+			asm("nop");
+		}
+	}
+}
diff --git a/include/bionic.h b/include/bionic.h
index c8d34ff..cbceeb4 100644
--- a/include/bionic.h
+++ b/include/bionic.h
@@ -13,7 +13,8 @@ void _memset(void *dst0, char val, size_t length);
 unsigned long _strtoul(const void *nptr, void **endptr, int base);
 int _strlen(const char *s);
 int _strnlen(const char *s, uint32_t maxlen);
-
+void _usleep(uint32_t usecs);
+void _msleep(uint32_t msecs);
 
 /* ctype replacements */
 int _isspace(char c);