Index: abi/arch/arm64/include/abi/arch/elf.h
===================================================================
--- abi/arch/arm64/include/abi/arch/elf.h	(revision 84176f3d26c423111021bb2b97b70bf0076fb9f4)
+++ abi/arch/arm64/include/abi/arch/elf.h	(revision 84176f3d26c423111021bb2b97b70bf0076fb9f4)
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2015 Petr Pavlu
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - 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.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ */
+
+/** @addtogroup abi_arm64
+ * @{
+ */
+/** @file
+ * @brief ARM64 ELF constants.
+ */
+
+#ifndef _ABI_arm64_ELF_H_
+#define _ABI_arm64_ELF_H_
+
+#define ELF_MACHINE        EM_AARCH64
+#define ELF_DATA_ENCODING  ELFDATA2LSB
+#define ELF_CLASS          ELFCLASS64
+
+#define R_AARCH64_RELATIVE  1027
+
+#endif
+
+/** @}
+ */
Index: abi/doc/doxygroups.h
===================================================================
--- abi/doc/doxygroups.h	(revision b58728fdc037c108b8477d42b1a79dc3748c5e4d)
+++ abi/doc/doxygroups.h	(revision 84176f3d26c423111021bb2b97b70bf0076fb9f4)
@@ -26,4 +26,9 @@
 /**
  * @defgroup abi_arm32 arm32
+ * @ingroup abi
+ */
+
+/**
+ * @defgroup abi_arm64 arm64
  * @ingroup abi
  */
Index: abi/include/abi/elf.h
===================================================================
--- abi/include/abi/elf.h	(revision b58728fdc037c108b8477d42b1a79dc3748c5e4d)
+++ abi/include/abi/elf.h	(revision 84176f3d26c423111021bb2b97b70bf0076fb9f4)
@@ -77,4 +77,5 @@
 	EM_IA_64       = 50,   /* IA-64 */
 	EM_X86_64      = 62,   /* AMD64/EMT64 */
+	EM_AARCH64     = 183,  /* ARM 64-bit architecture */
 	EM_RISCV       = 243,  /* RISC-V */
 };
@@ -515,4 +516,5 @@
 typedef struct elf32_rel elf_rel_t;
 typedef struct elf32_rela elf_rela_t;
+#define ELF_R_TYPE(i)  ELF32_R_TYPE(i)
 #endif
 
@@ -526,4 +528,5 @@
 typedef struct elf64_rel elf_rel_t;
 typedef struct elf64_rela elf_rela_t;
+#define ELF_R_TYPE(i)  ELF64_R_TYPE(i)
 #endif