arc: libc: Add support of 16-entry register file

ARC supports a restricted register file with 16 registers.
However, optimized routines support only a full register
file. Thus, fallback on default implementation in case
of 16-entry register file.

Signed-off-by: Claudiu Zissulescu <claziss@gmail.com>

28 files changed, 84 insertions, 56 deletions

diff --git a/newlib/libc/machine/arc/memcmp-bs-norm.S b/newlib/libc/machine/arc/memcmp-bs-norm.S
index be2464a..b136fdc 100644
--- a/newlib/libc/machine/arc/memcmp-bs-norm.S
+++ b/newlib/libc/machine/arc/memcmp-bs-norm.S
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2015, Synopsys, Inc. All rights reserved.
+   Copyright (c) 2015-2024, Synopsys, Inc. All rights reserved.
 
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
@@ -31,7 +31,8 @@
 /* This implementation is optimized for performance.  For code size a generic
    implementation of this function from newlib/libc/string/memcmp.c will be
    used.  */
-#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
+#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED) \
+    && !defined (__ARC_RF16__)
 
 #include "asm.h"
 
diff --git a/newlib/libc/machine/arc/memcmp-stub.c b/newlib/libc/machine/arc/memcmp-stub.c
index 30c7884..872f57b 100644
--- a/newlib/libc/machine/arc/memcmp-stub.c
+++ b/newlib/libc/machine/arc/memcmp-stub.c
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2015, Synopsys, Inc. All rights reserved.
+   Copyright (c) 2015-2024, Synopsys, Inc. All rights reserved.
 
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
@@ -29,7 +29,8 @@
 */
 
 
-#if defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED)
+#if defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED)	\
+  || defined (__ARC_RF16__)
 # include "../../string/memcmp.c"
 #else
 /* See memcmp-*.S.  */
diff --git a/newlib/libc/machine/arc/memcmp.S b/newlib/libc/machine/arc/memcmp.S
index 7c5a058..30b7a74 100644
--- a/newlib/libc/machine/arc/memcmp.S
+++ b/newlib/libc/machine/arc/memcmp.S
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2015, Synopsys, Inc. All rights reserved.
+   Copyright (c) 2015-2024, Synopsys, Inc. All rights reserved.
 
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
@@ -31,7 +31,8 @@
 /* This implementation is optimized for performance.  For code size a generic
    implementation of this function from newlib/libc/string/memcmp.c will be
    used.  */
-#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
+#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED) \
+    && !defined (__ARC_RF16__)
 
 #include "asm.h"
 
diff --git a/newlib/libc/machine/arc/memcpy-archs.S b/newlib/libc/machine/arc/memcpy-archs.S
index 84e766a..f30dafd 100644
--- a/newlib/libc/machine/arc/memcpy-archs.S
+++ b/newlib/libc/machine/arc/memcpy-archs.S
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2015, Synopsys, Inc. All rights reserved.
+   Copyright (c) 2015-2024, Synopsys, Inc. All rights reserved.
 
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
@@ -31,7 +31,8 @@
 /* This implementation is optimized for performance.  For code size a generic
    implementation of this function from newlib/libc/string/memcpy.c will be
    used.  */
-#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
+#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED) \
+    && !defined (__ARC_RF16__)
 
 #include "asm.h"
 
diff --git a/newlib/libc/machine/arc/memcpy-bs.S b/newlib/libc/machine/arc/memcpy-bs.S
index 5a224eb..6c86adf 100644
--- a/newlib/libc/machine/arc/memcpy-bs.S
+++ b/newlib/libc/machine/arc/memcpy-bs.S
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2015, Synopsys, Inc. All rights reserved.
+   Copyright (c) 2015-2024, Synopsys, Inc. All rights reserved.
 
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
@@ -31,7 +31,8 @@
 /* This implementation is optimized for performance.  For code size a generic
    implementation of this function from newlib/libc/string/memcpy.c will be
    used.  */
-#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
+#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED) \
+    && !defined (__ARC_RF16__)
 
 #include "asm.h"
 
diff --git a/newlib/libc/machine/arc/memcpy-stub.c b/newlib/libc/machine/arc/memcpy-stub.c
index cc46c2d..207fe8d 100644
--- a/newlib/libc/machine/arc/memcpy-stub.c
+++ b/newlib/libc/machine/arc/memcpy-stub.c
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2015, Synopsys, Inc. All rights reserved.
+   Copyright (c) 2015-2024, Synopsys, Inc. All rights reserved.
 
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
@@ -29,7 +29,8 @@
 */
 
 
-#if defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED)
+#if defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED)	\
+  || defined (__ARC_RF16__)
 # include "../../string/memcpy.c"
 #else
 /* See memcpy-*.S.  */
diff --git a/newlib/libc/machine/arc/memcpy.S b/newlib/libc/machine/arc/memcpy.S
index 6452f97..d31bb2c 100644
--- a/newlib/libc/machine/arc/memcpy.S
+++ b/newlib/libc/machine/arc/memcpy.S
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2015, Synopsys, Inc. All rights reserved.
+   Copyright (c) 2015-2024, Synopsys, Inc. All rights reserved.
 
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
@@ -31,7 +31,8 @@
 /* This implementation is optimized for performance.  For code size a generic
    implementation of this function from newlib/libc/string/memcpy.c will be
    used.  */
-#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
+#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED) \
+    && !defined (__ARC_RF16__)
 
 #include "asm.h"
 
diff --git a/newlib/libc/machine/arc/memset-archs.S b/newlib/libc/machine/arc/memset-archs.S
index dc912aa..1204cc0 100644
--- a/newlib/libc/machine/arc/memset-archs.S
+++ b/newlib/libc/machine/arc/memset-archs.S
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2015, Synopsys, Inc. All rights reserved.
+   Copyright (c) 2015-2024, Synopsys, Inc. All rights reserved.
 
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
@@ -31,7 +31,8 @@
 /* This implementation is optimized for performance.  For code size a generic
    implementation of this function from newlib/libc/string/memset.c will be
    used.  */
-#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
+#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED) \
+    && !defined (__ARC_RF16__)
 
 #include "asm.h"
 
diff --git a/newlib/libc/machine/arc/memset-bs.S b/newlib/libc/machine/arc/memset-bs.S
index 0206668..0b5e436 100644
--- a/newlib/libc/machine/arc/memset-bs.S
+++ b/newlib/libc/machine/arc/memset-bs.S
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2015, Synopsys, Inc. All rights reserved.
+   Copyright (c) 2015-2024, Synopsys, Inc. All rights reserved.
 
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
@@ -31,7 +31,8 @@
 /* This implementation is optimized for performance.  For code size a generic
    implementation of this function from newlib/libc/string/memset.c will be
    used.  */
-#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
+#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED) \
+    && !defined (__ARC_RF16__)
 
 #include "asm.h"
 
diff --git a/newlib/libc/machine/arc/memset-stub.c b/newlib/libc/machine/arc/memset-stub.c
index 981ca1f..d285eb4 100644
--- a/newlib/libc/machine/arc/memset-stub.c
+++ b/newlib/libc/machine/arc/memset-stub.c
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2015, Synopsys, Inc. All rights reserved.
+   Copyright (c) 2015-2024, Synopsys, Inc. All rights reserved.
 
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
@@ -29,7 +29,8 @@
 */
 
 
-#if defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED)
+#if defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED)	\
+  || defined (__ARC_RF16__)
 # include "../../string/memset.c"
 #else
 /* See memset-*.S.  */
diff --git a/newlib/libc/machine/arc/memset.S b/newlib/libc/machine/arc/memset.S
index 126d9ff..229205d 100644
--- a/newlib/libc/machine/arc/memset.S
+++ b/newlib/libc/machine/arc/memset.S
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2015, Synopsys, Inc. All rights reserved.
+   Copyright (c) 2015-2024, Synopsys, Inc. All rights reserved.
 
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
@@ -31,7 +31,8 @@
 /* This implementation is optimized for performance.  For code size a generic
    implementation of this function from newlib/libc/string/memset.c will be
    used.  */
-#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
+#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED) \
+    && !defined (__ARC_RF16__)
 
 #include "asm.h"
 
diff --git a/newlib/libc/machine/arc/strchr-bs-norm.S b/newlib/libc/machine/arc/strchr-bs-norm.S
index e69ac6c..2cd7e7f 100644
--- a/newlib/libc/machine/arc/strchr-bs-norm.S
+++ b/newlib/libc/machine/arc/strchr-bs-norm.S
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2015, Synopsys, Inc. All rights reserved.
+   Copyright (c) 2015-2024, Synopsys, Inc. All rights reserved.
 
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
@@ -31,7 +31,8 @@
 /* This implementation is optimized for performance.  For code size a generic
    implementation of this function from newlib/libc/string/strchr.c will be
    used.  */
-#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
+#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED) \
+    && !defined (__ARC_RF16__)
 
 /* ARC700 has a relatively long pipeline and branch prediction, so we want
    to avoid branches that are hard to predict.  On the other hand, the
diff --git a/newlib/libc/machine/arc/strchr-bs.S b/newlib/libc/machine/arc/strchr-bs.S
index eb61a3a..125d1f7 100644
--- a/newlib/libc/machine/arc/strchr-bs.S
+++ b/newlib/libc/machine/arc/strchr-bs.S
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2015, Synopsys, Inc. All rights reserved.
+   Copyright (c) 2015-2024, Synopsys, Inc. All rights reserved.
 
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
@@ -31,7 +31,8 @@
 /* This implementation is optimized for performance.  For code size a generic
    implementation of this function from newlib/libc/string/strchr.c will be
    used.  */
-#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
+#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED) \
+    && !defined (__ARC_RF16__)
 
 #include "asm.h"
 
diff --git a/newlib/libc/machine/arc/strchr-stub.c b/newlib/libc/machine/arc/strchr-stub.c
index 8d84a82..ea7a3b4 100644
--- a/newlib/libc/machine/arc/strchr-stub.c
+++ b/newlib/libc/machine/arc/strchr-stub.c
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2015, Synopsys, Inc. All rights reserved.
+   Copyright (c) 2015-2024, Synopsys, Inc. All rights reserved.
 
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
@@ -29,7 +29,8 @@
 */
 
 
-#if defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED)
+#if defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED)	\
+  || defined (__ARC_RF16__)
 # include "../../string/strchr.c"
 #else
 /* See strchr-*.S.  */
diff --git a/newlib/libc/machine/arc/strcmp-archs.S b/newlib/libc/machine/arc/strcmp-archs.S
index 6cccf27..543cebc 100644
--- a/newlib/libc/machine/arc/strcmp-archs.S
+++ b/newlib/libc/machine/arc/strcmp-archs.S
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2015, Synopsys, Inc. All rights reserved.
+   Copyright (c) 2015-2024, Synopsys, Inc. All rights reserved.
 
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
@@ -31,7 +31,8 @@
 /* This implementation is optimized for performance.  For code size a generic
    implementation of this function from newlib/libc/string/strcmp.c will be
    used.  */
-#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
+#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED) \
+    && !defined (__ARC_RF16__)
 
 #include "asm.h"
 
diff --git a/newlib/libc/machine/arc/strcmp-stub.c b/newlib/libc/machine/arc/strcmp-stub.c
index 19528e3..ab85b79 100644
--- a/newlib/libc/machine/arc/strcmp-stub.c
+++ b/newlib/libc/machine/arc/strcmp-stub.c
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2015, Synopsys, Inc. All rights reserved.
+   Copyright (c) 2015-2024, Synopsys, Inc. All rights reserved.
 
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
@@ -29,7 +29,8 @@
 */
 
 
-#if defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED)
+#if defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED)	\
+  || defined (__ARC_RF16__)
 # include "../../string/strcmp.c"
 #else
 /* See strcmp-*.S.  */
diff --git a/newlib/libc/machine/arc/strcmp.S b/newlib/libc/machine/arc/strcmp.S
index 40a9e94..32a651e 100644
--- a/newlib/libc/machine/arc/strcmp.S
+++ b/newlib/libc/machine/arc/strcmp.S
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2015, Synopsys, Inc. All rights reserved.
+   Copyright (c) 2015-2024, Synopsys, Inc. All rights reserved.
 
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
@@ -31,7 +31,8 @@
 /* This implementation is optimized for performance.  For code size a generic
    implementation of this function from newlib/libc/string/strcmp.c will be
    used.  */
-#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
+#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED) \
+    && !defined (__ARC_RF16__)
 
 #include "asm.h"
 
diff --git a/newlib/libc/machine/arc/strcpy-bs-arc600.S b/newlib/libc/machine/arc/strcpy-bs-arc600.S
index e80ffe5..2979702 100644
--- a/newlib/libc/machine/arc/strcpy-bs-arc600.S
+++ b/newlib/libc/machine/arc/strcpy-bs-arc600.S
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2015, Synopsys, Inc. All rights reserved.
+   Copyright (c) 2015-2024, Synopsys, Inc. All rights reserved.
 
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
@@ -31,7 +31,8 @@
 /* This implementation is optimized for performance.  For code size a generic
    implementation of this function from newlib/libc/string/strcpy.c will be
    used.  */
-#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
+#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED) \
+    && !defined (__ARC_RF16__)
 
 #include "asm.h"
 
diff --git a/newlib/libc/machine/arc/strcpy-bs.S b/newlib/libc/machine/arc/strcpy-bs.S
index 26ac6c7..d8c36ab 100644
--- a/newlib/libc/machine/arc/strcpy-bs.S
+++ b/newlib/libc/machine/arc/strcpy-bs.S
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2015, Synopsys, Inc. All rights reserved.
+   Copyright (c) 2015-2024, Synopsys, Inc. All rights reserved.
 
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
@@ -31,7 +31,8 @@
 /* This implementation is optimized for performance.  For code size a generic
    implementation of this function from newlib/libc/string/strcpy.c will be
    used.  */
-#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
+#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED) \
+    && !defined (__ARC_RF16__)
 
 #include "asm.h"
 
diff --git a/newlib/libc/machine/arc/strcpy-stub.c b/newlib/libc/machine/arc/strcpy-stub.c
index 80ea0e8..d3b182f 100644
--- a/newlib/libc/machine/arc/strcpy-stub.c
+++ b/newlib/libc/machine/arc/strcpy-stub.c
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2015, Synopsys, Inc. All rights reserved.
+   Copyright (c) 2015-2024, Synopsys, Inc. All rights reserved.
 
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
@@ -29,7 +29,8 @@
 */
 
 
-#if defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED)
+#if defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED)	\
+  || defined (__ARC_RF16__)
 # include "../../string/strcpy.c"
 #else
 /* See strcpy-*.S.  */
diff --git a/newlib/libc/machine/arc/strcpy.S b/newlib/libc/machine/arc/strcpy.S
index e379b79..132bd16 100644
--- a/newlib/libc/machine/arc/strcpy.S
+++ b/newlib/libc/machine/arc/strcpy.S
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2015, Synopsys, Inc. All rights reserved.
+   Copyright (c) 2015-2024, Synopsys, Inc. All rights reserved.
 
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
@@ -31,7 +31,8 @@
 /* This implementation is optimized for performance.  For code size a generic
    implementation of this function from newlib/libc/string/strcpy.c will be
    used.  */
-#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
+#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED) \
+    && !defined (__ARC_RF16__)
 
 #include "asm.h"
 
diff --git a/newlib/libc/machine/arc/strlen-bs-norm.S b/newlib/libc/machine/arc/strlen-bs-norm.S
index 5f8db32..89c6fcd 100644
--- a/newlib/libc/machine/arc/strlen-bs-norm.S
+++ b/newlib/libc/machine/arc/strlen-bs-norm.S
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2015, Synopsys, Inc. All rights reserved.
+   Copyright (c) 2015-2024, Synopsys, Inc. All rights reserved.
 
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
@@ -31,7 +31,8 @@
 /* This implementation is optimized for performance.  For code size a generic
    implementation of this function from newlib/libc/string/strlen.c will be
    used.  */
-#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
+#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED) \
+    && !defined (__ARC_RF16__)
 
 #include "asm.h"
 #if (defined (__ARC700__) || defined (__ARCEM__) || defined (__ARCHS__)) \
diff --git a/newlib/libc/machine/arc/strlen-bs.S b/newlib/libc/machine/arc/strlen-bs.S
index 59c3504..15caa83 100644
--- a/newlib/libc/machine/arc/strlen-bs.S
+++ b/newlib/libc/machine/arc/strlen-bs.S
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2015, Synopsys, Inc. All rights reserved.
+   Copyright (c) 2015-2024, Synopsys, Inc. All rights reserved.
 
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
@@ -31,7 +31,8 @@
 /* This implementation is optimized for performance.  For code size a generic
    implementation of this function from newlib/libc/string/strlen.c will be
    used.  */
-#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
+#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED) \
+    && !defined (__ARC_RF16__)
 
 #include "asm.h"
 
diff --git a/newlib/libc/machine/arc/strlen-stub.c b/newlib/libc/machine/arc/strlen-stub.c
index 942e9be..c52eeca 100644
--- a/newlib/libc/machine/arc/strlen-stub.c
+++ b/newlib/libc/machine/arc/strlen-stub.c
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2015, Synopsys, Inc. All rights reserved.
+   Copyright (c) 2015-2024, Synopsys, Inc. All rights reserved.
 
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
@@ -29,7 +29,8 @@
 */
 
 
-#if defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED)
+#if defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED)	\
+  || defined (__ARC_RF16__)
 # include "../../string/strlen.c"
 #else
 /* See strlen-*.S.  */
diff --git a/newlib/libc/machine/arc/strlen.S b/newlib/libc/machine/arc/strlen.S
index 67f820f..2072f3d 100644
--- a/newlib/libc/machine/arc/strlen.S
+++ b/newlib/libc/machine/arc/strlen.S
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2015, Synopsys, Inc. All rights reserved.
+   Copyright (c) 2015-2024, Synopsys, Inc. All rights reserved.
 
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
@@ -31,7 +31,8 @@
 /* This implementation is optimized for performance.  For code size a generic
    implementation of this function from newlib/libc/string/strlen.c will be
    used.  */
-#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
+#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED) \
+    && !defined (__ARC_RF16__)
 
 #include "asm.h"
 
diff --git a/newlib/libc/machine/arc/strncpy-bs.S b/newlib/libc/machine/arc/strncpy-bs.S
index ec99152..3077048 100644
--- a/newlib/libc/machine/arc/strncpy-bs.S
+++ b/newlib/libc/machine/arc/strncpy-bs.S
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2015, Synopsys, Inc. All rights reserved.
+   Copyright (c) 2015-2024, Synopsys, Inc. All rights reserved.
 
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
@@ -31,7 +31,8 @@
 /* This implementation is optimized for performance.  For code size a generic
    implementation of this function from newlib/libc/string/strncpy.c will be
    used.  */
-#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
+#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED) \
+    && !defined (__ARC_RF16__)
 
 #include "asm.h"
 
diff --git a/newlib/libc/machine/arc/strncpy-stub.c b/newlib/libc/machine/arc/strncpy-stub.c
index 3f8f9db..4a3a607 100644
--- a/newlib/libc/machine/arc/strncpy-stub.c
+++ b/newlib/libc/machine/arc/strncpy-stub.c
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2015, Synopsys, Inc. All rights reserved.
+   Copyright (c) 2015-2024, Synopsys, Inc. All rights reserved.
 
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
@@ -29,7 +29,8 @@
 */
 
 
-#if defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED)
+#if defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED)	\
+  || defined (__ARC_RF16__)
 # include "../../string/strncpy.c"
 #else
 /* See strncpy-*.S.  */
diff --git a/newlib/libc/machine/arc/strncpy.S b/newlib/libc/machine/arc/strncpy.S
index b04f589..959f2a4 100644
--- a/newlib/libc/machine/arc/strncpy.S
+++ b/newlib/libc/machine/arc/strncpy.S
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2015, Synopsys, Inc. All rights reserved.
+   Copyright (c) 2015-2024, Synopsys, Inc. All rights reserved.
 
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
@@ -31,7 +31,8 @@
 /* This implementation is optimized for performance.  For code size a generic
    implementation of this function from newlib/libc/string/strncpy.c will be
    used.  */
-#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED)
+#if !defined (__OPTIMIZE_SIZE__) && !defined (PREFER_SIZE_OVER_SPEED) \
+    && !defined (__ARC_RF16__)
 
 #include "asm.h"