diff --git a/repos/base/include/spec/x86/cpu/string.h b/repos/base/include/cpu/string.h
similarity index 89%
rename from repos/base/include/spec/x86/cpu/string.h
rename to repos/base/include/cpu/string.h
index fdb3e50dec..c429da2842 100644
--- a/repos/base/include/spec/x86/cpu/string.h
+++ b/repos/base/include/cpu/string.h
@@ -1,6 +1,7 @@
 /*
  * \brief  CPU-specific memcpy
  * \author Sebastian Sumpf
+ * \author Johanned Schlatow
  * \date   2012-08-02
  */
 
@@ -11,8 +12,8 @@
  * under the terms of the GNU Affero General Public License version 3.
  */
 
-#ifndef _INCLUDE__SPEC__X86__CPU__STRING_H_
-#define _INCLUDE__SPEC__X86__CPU__STRING_H_
+#ifndef _INCLUDE__CPU__STRING_H_
+#define _INCLUDE__CPU__STRING_H_
 
 namespace Genode {
 
@@ -58,4 +59,4 @@ namespace Genode {
 	}
 }
 
-#endif /* _INCLUDE__SPEC__X86__CPU__STRING_H_ */
+#endif /* _INCLUDE__CPU__STRING_H_ */
diff --git a/repos/base/include/spec/arm_64/cpu/string.h b/repos/base/include/spec/arm_64/cpu/string.h
deleted file mode 100644
index 2c5050e41f..0000000000
--- a/repos/base/include/spec/arm_64/cpu/string.h
+++ /dev/null
@@ -1,31 +0,0 @@
-/*
- * \brief  CPU-specific memcpy
- * \author Stefan Kalkowski
- * \date   2012-08-02
- */
-
-/*
- * Copyright (C) 2019 Genode Labs GmbH
- *
- * This file is part of the Genode OS framework, which is distributed
- * under the terms of the GNU Affero General Public License version 3.
- */
-
-#ifndef _INCLUDE__SPEC__ARM_64__CPU__STRING_H_
-#define _INCLUDE__SPEC__ARM_64__CPU__STRING_H_
-
-namespace Genode {
-
-	/**
-	 * Copy memory block
-	 *
-	 * \param dst   destination memory block
-	 * \param src   source memory block
-	 * \param size  number of bytes to copy
-	 *
-	 * \return      number of bytes not copied
-	 */
-	inline size_t memcpy_cpu(void *, const void *, size_t size) { return size; }
-}
-
-#endif /* _INCLUDE__SPEC__ARM_64__CPU__STRING_H_ */
diff --git a/repos/base/include/spec/riscv/cpu/string.h b/repos/base/include/spec/riscv/cpu/string.h
deleted file mode 100644
index 9aa9e79ee0..0000000000
--- a/repos/base/include/spec/riscv/cpu/string.h
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
- * \brief  CPU-specific memcpy
- * \author Sebastian Sumpf
- * \date   2015-06-01
- */
-
-/*
- * Copyright (C) 2015-2017 Genode Labs GmbH
- *
- * This file is part of the Genode OS framework, which is distributed
- * under the terms of the GNU Affero General Public License version 3.
- */
-
-#ifndef _INCLUDE__RISCV__CPU__STRING_H_
-#define _INCLUDE__RISCV__CPU__STRING_H_
-
-namespace Genode {
-
-	/**
-	 * Copy memory block
-	 *
-	 * \param dst   destination memory block
-	 * \param src   source memory block
-	 * \param size  number of bytes to copy
-	 *
-	 * \return      number of bytes not copied
-	 */
-	inline size_t memcpy_cpu(void *, const void *, size_t size) {
-		return size; }
-}
-
-#endif /* _INCLUDE__RISCV__CPU__STRING_H_ */