diff --git a/arch/armv7a/memset.S b/arch/armv7a/memset.S
new file mode 100644
index 00000000..379f74b0
--- /dev/null
+++ b/arch/armv7a/memset.S
@@ -0,0 +1,45 @@
+/*
+ * Phoenix-RTOS
+ *
+ * libphoenix
+ *
+ * memset
+ *
+ * Copyright 2024 Phoenix Systems
+ * Author: Lukasz Leczkowski
+ *
+ * This file is part of Phoenix-RTOS.
+ *
+ * %LICENSE%
+ */
+
+#define DST r3
+#define VAL r1
+#define LEN r2
+
+.thumb
+.syntax unified
+
+.text
+.align 4
+
+/* void *memset(void *dst, int v, size_t l) */
+.thumb_func
+
+.globl memset
+.type memset, %function
+memset:
+	cbz r2, .Lreturn
+	mov DST, r0
+
+	/* check alignment */
+	ands r3, r0, #7
+	beq .Laligned
+
+
+
+
+
+
+.Lreturn:
+	bx lr
\ No newline at end of file