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diff --git a/libgloss/arc64/asm.h b/libgloss/arc64/asm.h
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+/*
+   Copyright (c) 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:
+
+   1) Redistributions of source code must retain the above copyright notice,
+   this list of conditions and the following disclaimer.
+
+   2) Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+   3) Neither the name of the Synopsys, Inc., nor the names of its contributors
+   may be used to endorse or promote products derived from this software
+   without specific prior written permission.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+   ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+   LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+   CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+   SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef _ARC64_ASM_H
+#define _ARC64_ASM_H
+
+#if defined (__ARC64_ARCH32__)
+
+/* Define 32-bit word.  */
+.macro WORD w
+  .word \w
+.endm
+
+/* Move register immediate (short): r:reg, i:immediate  */
+.macro MOVRI_S r, i
+  mov_s	  \r, \i
+.endm
+
+/* Move register immediate (short): r:reg, ri:reg/immediate  */
+.macro MOVR_S r, ri
+  mov_s	  \r, \ri
+.endm
+
+/* Move register immediate: r:reg, ri:reg/immediate  */
+.macro MOVR r, ri
+  mov	  \r, \ri
+.endm
+
+/* Push register: r:reg  */
+.macro PUSHR   r
+  push  \r
+.endm
+
+/* Pop register: r:reg  */
+.macro POPR r
+  pop	  \r
+.endm
+
+/* Subtract register: r1(reg), r2(reg), r3(reg)  */
+.macro SUBR r1, r2, r3
+  sub	  \r1, \r2, \r3
+.endm
+
+/* Add PCL-rel: r:reg, symb: symbol */
+.macro ADDPCL r,symb
+  add	  \r, pcl, \symb
+.endm
+
+#elif defined (__ARC64_ARCH64__)
+
+/* Define 64-bit word.  */
+.macro WORD w
+  .xword \w
+.endm
+
+/* Move immediate (short): r:reg, i:immediate  */
+.macro MOVRI_S r, i
+  movhl_s \r, \i
+  orl_s	  \r, \r, \i
+.endm
+
+/* Move register immediate (short): r:reg, ri:reg/immediate  */
+.macro MOVR_S r, ri
+  movl_s  \r, \ri
+.endm
+
+/* Move register immediate: r:reg, ri:reg/immediate  */
+.macro MOVR r, ri
+  movl	  \r, \ri
+.endm
+
+/* Push register: r:reg  */
+.macro PUSHR   r
+  pushl_s \r
+.endm
+
+/* Pop register: r:reg  */
+.macro POPR   r
+  popl_s  \r
+.endm
+
+/* Subtract register: r1(reg), r2(reg), r3(reg)  */
+.macro SUBR r1, r2, r3
+  subl	  \r1, \r2, \r3
+.endm
+
+/* Add PCL-rel: r:reg, symb: symbol */
+.macro ADDPCL r, symb
+  addl	  \r, pcl, \symb@pcl
+.endm
+
+#else /* !__ARC64_ARC32__  && !__ARC64_ARC64__  */
+# error Please use either 32-bit or 64-bit version of arc64 compiler
+#endif
+
+#endif /* _ARC64_ASM_H  */